1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 24 */ 25 26 /* 27 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 28 * All Rights Reserved 29 */ 30 31 /* 32 * Copyright (c) 2012, 2016 by Delphix. All rights reserved. 33 * Copyright 2019 Nexenta Systems, Inc. 34 * Copyright 2019 Nexenta by DDN, Inc. 35 * Copyright 2021 Racktop Systems, Inc. 36 */ 37 38 #include <sys/param.h> 39 #include <sys/types.h> 40 #include <sys/systm.h> 41 #include <sys/cred.h> 42 #include <sys/buf.h> 43 #include <sys/vfs.h> 44 #include <sys/vfs_opreg.h> 45 #include <sys/vnode.h> 46 #include <sys/uio.h> 47 #include <sys/errno.h> 48 #include <sys/sysmacros.h> 49 #include <sys/statvfs.h> 50 #include <sys/kmem.h> 51 #include <sys/dirent.h> 52 #include <sys/cmn_err.h> 53 #include <sys/debug.h> 54 #include <sys/systeminfo.h> 55 #include <sys/flock.h> 56 #include <sys/pathname.h> 57 #include <sys/nbmlock.h> 58 #include <sys/share.h> 59 #include <sys/atomic.h> 60 #include <sys/policy.h> 61 #include <sys/fem.h> 62 #include <sys/sdt.h> 63 #include <sys/ddi.h> 64 #include <sys/zone.h> 65 66 #include <fs/fs_reparse.h> 67 68 #include <rpc/types.h> 69 #include <rpc/auth.h> 70 #include <rpc/rpcsec_gss.h> 71 #include <rpc/svc.h> 72 73 #include <nfs/nfs.h> 74 #include <nfs/nfssys.h> 75 #include <nfs/export.h> 76 #include <nfs/nfs_cmd.h> 77 #include <nfs/lm.h> 78 #include <nfs/nfs4.h> 79 #include <nfs/nfs4_drc.h> 80 81 #include <sys/strsubr.h> 82 #include <sys/strsun.h> 83 84 #include <inet/common.h> 85 #include <inet/ip.h> 86 #include <inet/ip6.h> 87 88 #include <sys/tsol/label.h> 89 #include <sys/tsol/tndb.h> 90 91 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 92 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 93 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 94 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 95 extern struct svc_ops rdma_svc_ops; 96 extern int nfs_loaned_buffers; 97 /* End of Tunables */ 98 99 static int rdma_setup_read_data4(READ4args *, READ4res *); 100 101 /* 102 * Used to bump the stateid4.seqid value and show changes in the stateid 103 */ 104 #define next_stateid(sp) (++(sp)->bits.chgseq) 105 106 /* 107 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 108 * This is used to return NFS4ERR_TOOSMALL when clients specify 109 * maxcount that isn't large enough to hold the smallest possible 110 * XDR encoded dirent. 111 * 112 * sizeof cookie (8 bytes) + 113 * sizeof name_len (4 bytes) + 114 * sizeof smallest (padded) name (4 bytes) + 115 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 116 * sizeof attrlist4_len (4 bytes) + 117 * sizeof next boolean (4 bytes) 118 * 119 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 120 * the smallest possible entry4 (assumes no attrs requested). 121 * sizeof nfsstat4 (4 bytes) + 122 * sizeof verifier4 (8 bytes) + 123 * sizeof entry4list bool (4 bytes) + 124 * sizeof entry4 (36 bytes) + 125 * sizeof eof bool (4 bytes) 126 * 127 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 128 * VOP_READDIR. Its value is the size of the maximum possible dirent 129 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 130 * required for a given name length. MAXNAMELEN is the maximum 131 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 132 * macros are to allow for . and .. entries -- just a minor tweak to try 133 * and guarantee that buffer we give to VOP_READDIR will be large enough 134 * to hold ., .., and the largest possible solaris dirent64. 135 */ 136 #define RFS4_MINLEN_ENTRY4 36 137 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 138 #define RFS4_MINLEN_RDDIR_BUF \ 139 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 140 141 /* 142 * It would be better to pad to 4 bytes since that's what XDR would do, 143 * but the dirents UFS gives us are already padded to 8, so just take 144 * what we're given. Dircount is only a hint anyway. Currently the 145 * solaris kernel is ASCII only, so there's no point in calling the 146 * UTF8 functions. 147 * 148 * dirent64: named padded to provide 8 byte struct alignment 149 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 150 * 151 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 152 * 153 */ 154 #define DIRENT64_TO_DIRCOUNT(dp) \ 155 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 156 157 158 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 159 160 u_longlong_t nfs4_srv_caller_id; 161 uint_t nfs4_srv_vkey = 0; 162 163 void rfs4_init_compound_state(struct compound_state *); 164 165 static void nullfree(caddr_t); 166 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 167 struct compound_state *); 168 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 169 struct compound_state *); 170 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 171 struct compound_state *); 172 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 173 struct compound_state *); 174 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 175 struct compound_state *); 176 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 177 struct svc_req *, struct compound_state *); 178 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 179 struct svc_req *, struct compound_state *); 180 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 181 struct compound_state *); 182 static void rfs4_op_getattr_free(nfs_resop4 *); 183 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 184 struct compound_state *); 185 static void rfs4_op_getfh_free(nfs_resop4 *); 186 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 187 struct compound_state *); 188 static void rfs4_op_notsup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 189 struct compound_state *); 190 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 191 struct compound_state *); 192 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 193 struct compound_state *); 194 static void lock_denied_free(nfs_resop4 *); 195 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 196 struct compound_state *); 197 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 198 struct compound_state *); 199 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 200 struct compound_state *); 201 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 202 struct compound_state *); 203 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 204 struct svc_req *req, struct compound_state *cs); 205 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 206 struct compound_state *); 207 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 208 struct compound_state *); 209 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 210 struct svc_req *, struct compound_state *); 211 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 212 struct svc_req *, struct compound_state *); 213 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 214 struct compound_state *); 215 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 216 struct compound_state *); 217 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 218 struct compound_state *); 219 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 220 struct compound_state *); 221 static void rfs4_op_read_free(nfs_resop4 *); 222 static void rfs4_op_readdir_free(nfs_resop4 *resop); 223 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 224 struct compound_state *); 225 static void rfs4_op_readlink_free(nfs_resop4 *); 226 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 227 struct svc_req *, struct compound_state *); 228 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 229 struct compound_state *); 230 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 231 struct compound_state *); 232 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 233 struct compound_state *); 234 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 235 struct compound_state *); 236 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 237 struct compound_state *); 238 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 239 struct compound_state *); 240 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 241 struct compound_state *); 242 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 243 struct compound_state *); 244 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 245 struct svc_req *, struct compound_state *); 246 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 247 struct svc_req *req, struct compound_state *); 248 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 249 struct compound_state *); 250 static void rfs4_op_secinfo_free(nfs_resop4 *); 251 252 void rfs4x_op_exchange_id(nfs_argop4 *argop, nfs_resop4 *resop, 253 struct svc_req *req, struct compound_state *cs); 254 void rfs4x_exchange_id_free(nfs_resop4 *); 255 256 void rfs4x_op_create_session(nfs_argop4 *argop, nfs_resop4 *resop, 257 struct svc_req *req, struct compound_state *cs); 258 259 void rfs4x_op_destroy_session(nfs_argop4 *argop, nfs_resop4 *resop, 260 struct svc_req *req, compound_state_t *cs); 261 262 void rfs4x_op_sequence(nfs_argop4 *argop, nfs_resop4 *resop, 263 struct svc_req *req, struct compound_state *cs); 264 265 void rfs4x_op_reclaim_complete(nfs_argop4 *argop, nfs_resop4 *resop, 266 struct svc_req *req, compound_state_t *cs); 267 268 void rfs4x_op_destroy_clientid(nfs_argop4 *argop, nfs_resop4 *resop, 269 struct svc_req *req, compound_state_t *cs); 270 271 void rfs4x_op_bind_conn_to_session(nfs_argop4 *argop, nfs_resop4 *resop, 272 struct svc_req *req, compound_state_t *cs); 273 274 void rfs4x_op_secinfo_noname(nfs_argop4 *argop, nfs_resop4 *resop, 275 struct svc_req *req, compound_state_t *cs); 276 277 static nfsstat4 check_open_access(uint32_t, struct compound_state *, 278 struct svc_req *); 279 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 280 void rfs4_ss_clid(nfs4_srv_t *, rfs4_client_t *); 281 282 /* 283 * translation table for attrs 284 */ 285 struct nfs4_ntov_table { 286 union nfs4_attr_u *na; 287 uint8_t amap[NFS4_MAXNUM_ATTRS]; 288 int attrcnt; 289 bool_t vfsstat; 290 }; 291 292 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 293 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 294 struct nfs4_svgetit_arg *sargp); 295 296 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 297 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 298 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 299 300 static void hanfsv4_failover(nfs4_srv_t *); 301 302 fem_t *deleg_rdops; 303 fem_t *deleg_wrops; 304 305 /* 306 * NFS4 op dispatch table 307 */ 308 309 struct rfsv4disp { 310 void (*dis_proc)(); /* proc to call */ 311 void (*dis_resfree)(); /* frees space allocated by proc */ 312 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 313 }; 314 315 static struct rfsv4disp rfsv4disptab[] = { 316 /* 317 * NFS VERSION 4 318 */ 319 320 /* RFS_NULL = 0 */ 321 {rfs4_op_illegal, nullfree, 0}, 322 323 /* UNUSED = 1 */ 324 {rfs4_op_illegal, nullfree, 0}, 325 326 /* UNUSED = 2 */ 327 {rfs4_op_illegal, nullfree, 0}, 328 329 /* OP_ACCESS = 3 */ 330 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 331 332 /* OP_CLOSE = 4 */ 333 {rfs4_op_close, nullfree, 0}, 334 335 /* OP_COMMIT = 5 */ 336 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 337 338 /* OP_CREATE = 6 */ 339 {rfs4_op_create, nullfree, 0}, 340 341 /* OP_DELEGPURGE = 7 */ 342 {rfs4_op_delegpurge, nullfree, 0}, 343 344 /* OP_DELEGRETURN = 8 */ 345 {rfs4_op_delegreturn, nullfree, 0}, 346 347 /* OP_GETATTR = 9 */ 348 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 349 350 /* OP_GETFH = 10 */ 351 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 352 353 /* OP_LINK = 11 */ 354 {rfs4_op_link, nullfree, 0}, 355 356 /* OP_LOCK = 12 */ 357 {rfs4_op_lock, lock_denied_free, 0}, 358 359 /* OP_LOCKT = 13 */ 360 {rfs4_op_lockt, lock_denied_free, 0}, 361 362 /* OP_LOCKU = 14 */ 363 {rfs4_op_locku, nullfree, 0}, 364 365 /* OP_LOOKUP = 15 */ 366 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 367 368 /* OP_LOOKUPP = 16 */ 369 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 370 371 /* OP_NVERIFY = 17 */ 372 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 373 374 /* OP_OPEN = 18 */ 375 {rfs4_op_open, rfs4_free_reply, 0}, 376 377 /* OP_OPENATTR = 19 */ 378 {rfs4_op_openattr, nullfree, 0}, 379 380 /* OP_OPEN_CONFIRM = 20 */ 381 {rfs4_op_open_confirm, nullfree, 0}, 382 383 /* OP_OPEN_DOWNGRADE = 21 */ 384 {rfs4_op_open_downgrade, nullfree, 0}, 385 386 /* OP_OPEN_PUTFH = 22 */ 387 {rfs4_op_putfh, nullfree, RPC_ALL}, 388 389 /* OP_PUTPUBFH = 23 */ 390 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 391 392 /* OP_PUTROOTFH = 24 */ 393 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 394 395 /* OP_READ = 25 */ 396 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 397 398 /* OP_READDIR = 26 */ 399 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 400 401 /* OP_READLINK = 27 */ 402 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 403 404 /* OP_REMOVE = 28 */ 405 {rfs4_op_remove, nullfree, 0}, 406 407 /* OP_RENAME = 29 */ 408 {rfs4_op_rename, nullfree, 0}, 409 410 /* OP_RENEW = 30 */ 411 {rfs4_op_renew, nullfree, 0}, 412 413 /* OP_RESTOREFH = 31 */ 414 {rfs4_op_restorefh, nullfree, RPC_ALL}, 415 416 /* OP_SAVEFH = 32 */ 417 {rfs4_op_savefh, nullfree, RPC_ALL}, 418 419 /* OP_SECINFO = 33 */ 420 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 421 422 /* OP_SETATTR = 34 */ 423 {rfs4_op_setattr, nullfree, 0}, 424 425 /* OP_SETCLIENTID = 35 */ 426 {rfs4_op_setclientid, nullfree, 0}, 427 428 /* OP_SETCLIENTID_CONFIRM = 36 */ 429 {rfs4_op_setclientid_confirm, nullfree, 0}, 430 431 /* OP_VERIFY = 37 */ 432 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 433 434 /* OP_WRITE = 38 */ 435 {rfs4_op_write, nullfree, 0}, 436 437 /* OP_RELEASE_LOCKOWNER = 39 */ 438 {rfs4_op_release_lockowner, nullfree, 0}, 439 440 /* 441 * NFSv4.1 operations 442 */ 443 444 /* OP_BACKCHANNEL_CTL = 40 */ 445 {rfs4_op_notsup, nullfree, 0}, 446 447 /* OP_BIND_CONN_TO_SESSION = 41 */ 448 {rfs4x_op_bind_conn_to_session, nullfree, 0}, 449 450 /* OP_EXCHANGE_ID = 42 */ 451 {rfs4x_op_exchange_id, rfs4x_exchange_id_free, 0}, 452 453 /* OP_CREATE_SESSION = 43 */ 454 {rfs4x_op_create_session, nullfree, 0}, 455 456 /* OP_DESTROY_SESSION = 44 */ 457 {rfs4x_op_destroy_session, nullfree, 0}, 458 459 /* OP_FREE_STATEID = 45 */ 460 {rfs4_op_notsup, nullfree, 0}, 461 462 /* OP_GET_DIR_DELEGATION = 46 */ 463 {rfs4_op_notsup, nullfree, 0}, 464 465 /* OP_GETDEVICEINFO = 47 */ 466 {rfs4_op_notsup, nullfree, 0}, 467 468 /* OP_GETDEVICELIST = 48 */ 469 {rfs4_op_notsup, nullfree, 0}, 470 471 /* OP_LAYOUTCOMMIT = 49 */ 472 {rfs4_op_notsup, nullfree, 0}, 473 474 /* OP_LAYOUTGET = 50 */ 475 {rfs4_op_notsup, nullfree, 0}, 476 477 /* OP_LAYOUTRETURN = 51 */ 478 {rfs4_op_notsup, nullfree, 0}, 479 480 /* OP_SECINFO_NO_NAME = 52 */ 481 {rfs4x_op_secinfo_noname, rfs4_op_secinfo_free, 0}, 482 483 /* OP_SEQUENCE = 53 */ 484 {rfs4x_op_sequence, nullfree, 0}, 485 486 /* OP_SET_SSV = 54 */ 487 {rfs4_op_notsup, nullfree, 0}, 488 489 /* OP_TEST_STATEID = 55 */ 490 {rfs4_op_notsup, nullfree, 0}, 491 492 /* OP_WANT_DELEGATION = 56 */ 493 {rfs4_op_notsup, nullfree, 0}, 494 495 /* OP_DESTROY_CLIENTID = 57 */ 496 {rfs4x_op_destroy_clientid, nullfree, 0}, 497 498 /* OP_RECLAIM_COMPLETE = 58 */ 499 {rfs4x_op_reclaim_complete, nullfree, 0}, 500 }; 501 502 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 503 504 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 505 506 #ifdef DEBUG 507 508 int rfs4_fillone_debug = 0; 509 int rfs4_no_stub_access = 1; 510 int rfs4_rddir_debug = 0; 511 512 static char *rfs4_op_string[] = { 513 "rfs4_op_null", 514 "rfs4_op_1 unused", 515 "rfs4_op_2 unused", 516 "rfs4_op_access", 517 "rfs4_op_close", 518 "rfs4_op_commit", 519 "rfs4_op_create", 520 "rfs4_op_delegpurge", 521 "rfs4_op_delegreturn", 522 "rfs4_op_getattr", 523 "rfs4_op_getfh", 524 "rfs4_op_link", 525 "rfs4_op_lock", 526 "rfs4_op_lockt", 527 "rfs4_op_locku", 528 "rfs4_op_lookup", 529 "rfs4_op_lookupp", 530 "rfs4_op_nverify", 531 "rfs4_op_open", 532 "rfs4_op_openattr", 533 "rfs4_op_open_confirm", 534 "rfs4_op_open_downgrade", 535 "rfs4_op_putfh", 536 "rfs4_op_putpubfh", 537 "rfs4_op_putrootfh", 538 "rfs4_op_read", 539 "rfs4_op_readdir", 540 "rfs4_op_readlink", 541 "rfs4_op_remove", 542 "rfs4_op_rename", 543 "rfs4_op_renew", 544 "rfs4_op_restorefh", 545 "rfs4_op_savefh", 546 "rfs4_op_secinfo", 547 "rfs4_op_setattr", 548 "rfs4_op_setclientid", 549 "rfs4_op_setclient_confirm", 550 "rfs4_op_verify", 551 "rfs4_op_write", 552 "rfs4_op_release_lockowner", 553 /* NFSv4.1 */ 554 "backchannel_ctl", 555 "bind_conn_to_session", 556 "exchange_id", 557 "create_session", 558 "destroy_session", 559 "free_stateid", 560 "get_dir_delegation", 561 "getdeviceinfo", 562 "getdevicelist", 563 "layoutcommit", 564 "layoutget", 565 "layoutreturn", 566 "secinfo_no_name", 567 "sequence", 568 "set_ssv", 569 "test_stateid", 570 "want_delegation", 571 "destroy_clientid", 572 "reclaim_complete", 573 "rfs4_op_illegal" 574 }; 575 576 #endif 577 578 void rfs4_ss_chkclid(nfs4_srv_t *, rfs4_client_t *); 579 580 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 581 582 extern void rfs4_free_fs_locations4(fs_locations4 *); 583 584 #ifdef nextdp 585 #undef nextdp 586 #endif 587 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 588 589 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 590 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 591 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 592 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 593 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 594 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 595 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 596 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 597 NULL, NULL 598 }; 599 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 600 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 601 VOPNAME_READ, { .femop_read = deleg_wr_read }, 602 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 603 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 604 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 605 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 606 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 607 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 608 NULL, NULL 609 }; 610 611 nfs4_srv_t * 612 nfs4_get_srv(void) 613 { 614 nfs_globals_t *ng = nfs_srv_getzg(); 615 nfs4_srv_t *srv = ng->nfs4_srv; 616 ASSERT(srv != NULL); 617 return (srv); 618 } 619 620 void 621 rfs4_srv_zone_init(nfs_globals_t *ng) 622 { 623 nfs4_srv_t *nsrv4; 624 timespec32_t verf; 625 626 nsrv4 = kmem_zalloc(sizeof (*nsrv4), KM_SLEEP); 627 628 /* 629 * The following algorithm attempts to find a unique verifier 630 * to be used as the write verifier returned from the server 631 * to the client. It is important that this verifier change 632 * whenever the server reboots. Of secondary importance, it 633 * is important for the verifier to be unique between two 634 * different servers. 635 * 636 * Thus, an attempt is made to use the system hostid and the 637 * current time in seconds when the nfssrv kernel module is 638 * loaded. It is assumed that an NFS server will not be able 639 * to boot and then to reboot in less than a second. If the 640 * hostid has not been set, then the current high resolution 641 * time is used. This will ensure different verifiers each 642 * time the server reboots and minimize the chances that two 643 * different servers will have the same verifier. 644 * XXX - this is broken on LP64 kernels. 645 */ 646 verf.tv_sec = (time_t)zone_get_hostid(NULL); 647 if (verf.tv_sec != 0) { 648 verf.tv_nsec = gethrestime_sec(); 649 } else { 650 timespec_t tverf; 651 652 gethrestime(&tverf); 653 verf.tv_sec = (time_t)tverf.tv_sec; 654 verf.tv_nsec = tverf.tv_nsec; 655 } 656 nsrv4->write4verf = *(uint64_t *)&verf; 657 658 /* Used to manage create/destroy of server state */ 659 nsrv4->nfs4_server_state = NULL; 660 nsrv4->nfs4_cur_servinst = NULL; 661 nsrv4->nfs4_deleg_policy = SRV_NEVER_DELEGATE; 662 mutex_init(&nsrv4->deleg_lock, NULL, MUTEX_DEFAULT, NULL); 663 mutex_init(&nsrv4->state_lock, NULL, MUTEX_DEFAULT, NULL); 664 mutex_init(&nsrv4->servinst_lock, NULL, MUTEX_DEFAULT, NULL); 665 rw_init(&nsrv4->deleg_policy_lock, NULL, RW_DEFAULT, NULL); 666 667 ng->nfs4_srv = nsrv4; 668 } 669 670 void 671 rfs4_srv_zone_fini(nfs_globals_t *ng) 672 { 673 nfs4_srv_t *nsrv4 = ng->nfs4_srv; 674 675 ng->nfs4_srv = NULL; 676 677 mutex_destroy(&nsrv4->deleg_lock); 678 mutex_destroy(&nsrv4->state_lock); 679 mutex_destroy(&nsrv4->servinst_lock); 680 rw_destroy(&nsrv4->deleg_policy_lock); 681 682 kmem_free(nsrv4, sizeof (*nsrv4)); 683 } 684 685 void 686 rfs4_srvrinit(void) 687 { 688 extern void rfs4_attr_init(); 689 690 rfs4_attr_init(); 691 692 if (fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops) != 0) { 693 rfs4_disable_delegation(); 694 } else if (fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 695 &deleg_wrops) != 0) { 696 rfs4_disable_delegation(); 697 fem_free(deleg_rdops); 698 } 699 700 nfs4_srv_caller_id = fs_new_caller_id(); 701 lockt_sysid = lm_alloc_sysidt(); 702 vsd_create(&nfs4_srv_vkey, NULL); 703 rfs4_state_g_init(); 704 } 705 706 void 707 rfs4_srvrfini(void) 708 { 709 if (lockt_sysid != LM_NOSYSID) { 710 lm_free_sysidt(lockt_sysid); 711 lockt_sysid = LM_NOSYSID; 712 } 713 714 rfs4_state_g_fini(); 715 716 fem_free(deleg_rdops); 717 fem_free(deleg_wrops); 718 } 719 720 void 721 rfs4_do_server_start(int server_upordown, int srv_delegation, 722 nfs4_minor_t nfs4_minor_max, int cluster_booted) 723 { 724 nfs4_srv_t *nsrv4 = nfs4_get_srv(); 725 726 /* Is this a warm start? */ 727 if (server_upordown == NFS_SERVER_QUIESCED) { 728 cmn_err(CE_NOTE, "nfs4_srv: " 729 "server was previously quiesced; " 730 "existing NFSv4 state will be re-used"); 731 732 /* 733 * HA-NFSv4: this is also the signal 734 * that a Resource Group failover has 735 * occurred. 736 */ 737 if (cluster_booted) 738 hanfsv4_failover(nsrv4); 739 } else { 740 /* Cold start */ 741 nsrv4->rfs4_start_time = 0; 742 rfs4_state_zone_init(nsrv4); 743 nsrv4->nfs4_drc = rfs4_init_drc(nfs4_drc_max, 744 nfs4_drc_hash); 745 746 /* 747 * The nfsd service was started with the -s option 748 * we need to pull in any state from the paths indicated. 749 */ 750 if (curzone == global_zone && rfs4_dss_numnewpaths > 0) { 751 /* read in the stable storage state from these paths */ 752 rfs4_dss_readstate(nsrv4, rfs4_dss_numnewpaths, 753 rfs4_dss_newpaths); 754 } 755 } 756 757 nsrv4->nfs4_minor_max = nfs4_minor_max; 758 759 /* Check if delegation is to be enabled */ 760 if (srv_delegation != FALSE) 761 rfs4_set_deleg_policy(nsrv4, SRV_NORMAL_DELEGATE); 762 } 763 764 void 765 rfs4_init_compound_state(struct compound_state *cs) 766 { 767 bzero(cs, sizeof (*cs)); 768 cs->cont = TRUE; 769 cs->access = CS_ACCESS_DENIED; 770 cs->deleg = FALSE; 771 cs->mandlock = FALSE; 772 cs->fh.nfs_fh4_val = cs->fhbuf; 773 } 774 775 /* Do cleanup of the compound_state */ 776 void 777 rfs4_fini_compound_state(struct compound_state *cs) 778 { 779 if (cs->vp) { 780 VN_RELE(cs->vp); 781 } 782 if (cs->saved_vp) { 783 VN_RELE(cs->saved_vp); 784 } 785 if (cs->cr) { 786 crfree(cs->cr); 787 } 788 if (cs->saved_fh.nfs_fh4_val) { 789 kmem_free(cs->saved_fh.nfs_fh4_val, NFS4_FHSIZE); 790 } 791 if (cs->sp) { 792 rfs4x_session_rele(cs->sp); 793 } 794 } 795 796 void 797 rfs4_grace_start(rfs4_servinst_t *sip) 798 { 799 rw_enter(&sip->rwlock, RW_WRITER); 800 sip->start_time = nfs_sys_uptime(); 801 sip->grace_period = rfs4_grace_period; 802 rw_exit(&sip->rwlock); 803 } 804 805 /* 806 * returns true if the instance's grace period has never been started 807 */ 808 int 809 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 810 { 811 time_t start_time; 812 813 rw_enter(&sip->rwlock, RW_READER); 814 start_time = sip->start_time; 815 rw_exit(&sip->rwlock); 816 817 return (start_time == 0); 818 } 819 820 /* 821 * Indicates if server instance is within the 822 * grace period. 823 */ 824 int 825 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 826 { 827 time_t grace_expiry; 828 829 /* All clients called reclaim-complete */ 830 if (sip->nreclaim == 0 || sip->grace_period == 0) 831 return (0); 832 833 rw_enter(&sip->rwlock, RW_READER); 834 grace_expiry = sip->start_time + sip->grace_period; 835 rw_exit(&sip->rwlock); 836 837 if (nfs_sys_uptime() < grace_expiry) 838 return (1); 839 840 /* Once grace period ends, optimize next calls */ 841 sip->grace_period = 0; 842 return (0); 843 } 844 845 int 846 rfs4_clnt_in_grace(rfs4_client_t *cp) 847 { 848 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 849 850 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 851 } 852 853 /* 854 * reset all currently active grace periods 855 */ 856 void 857 rfs4_grace_reset_all(nfs4_srv_t *nsrv4) 858 { 859 rfs4_servinst_t *sip; 860 861 mutex_enter(&nsrv4->servinst_lock); 862 for (sip = nsrv4->nfs4_cur_servinst; sip != NULL; sip = sip->prev) 863 if (rfs4_servinst_in_grace(sip)) 864 rfs4_grace_start(sip); 865 mutex_exit(&nsrv4->servinst_lock); 866 } 867 868 /* 869 * start any new instances' grace periods 870 */ 871 void 872 rfs4_grace_start_new(nfs4_srv_t *nsrv4) 873 { 874 rfs4_servinst_t *sip; 875 876 mutex_enter(&nsrv4->servinst_lock); 877 for (sip = nsrv4->nfs4_cur_servinst; sip != NULL; sip = sip->prev) 878 if (rfs4_servinst_grace_new(sip)) 879 rfs4_grace_start(sip); 880 mutex_exit(&nsrv4->servinst_lock); 881 } 882 883 static rfs4_dss_path_t * 884 rfs4_dss_newpath(nfs4_srv_t *nsrv4, rfs4_servinst_t *sip, 885 char *path, unsigned index) 886 { 887 size_t len; 888 rfs4_dss_path_t *dss_path; 889 890 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 891 892 /* 893 * Take a copy of the string, since the original may be overwritten. 894 * Sadly, no strdup() in the kernel. 895 */ 896 /* allow for NUL */ 897 len = strlen(path) + 1; 898 dss_path->path = kmem_alloc(len, KM_SLEEP); 899 (void) strlcpy(dss_path->path, path, len); 900 901 /* associate with servinst */ 902 dss_path->sip = sip; 903 dss_path->index = index; 904 905 /* 906 * Add to list of served paths. 907 * No locking required, as we're only ever called at startup. 908 */ 909 if (nsrv4->dss_pathlist == NULL) { 910 /* this is the first dss_path_t */ 911 912 /* needed for insque/remque */ 913 dss_path->next = dss_path->prev = dss_path; 914 915 nsrv4->dss_pathlist = dss_path; 916 } else { 917 insque(dss_path, nsrv4->dss_pathlist); 918 } 919 920 return (dss_path); 921 } 922 923 /* 924 * Create a new server instance, and make it the currently active instance. 925 * Note that starting the grace period too early will reduce the clients' 926 * recovery window. 927 */ 928 void 929 rfs4_servinst_create(nfs4_srv_t *nsrv4, int start_grace, 930 int dss_npaths, char **dss_paths) 931 { 932 unsigned i; 933 rfs4_servinst_t *sip; 934 rfs4_oldstate_t *oldstate; 935 936 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 937 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 938 939 sip->nreclaim = 0; 940 sip->start_time = (time_t)0; 941 sip->grace_period = (time_t)0; 942 sip->next = NULL; 943 sip->prev = NULL; 944 945 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 946 /* 947 * This initial dummy entry is required to setup for insque/remque. 948 * It must be skipped over whenever the list is traversed. 949 */ 950 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 951 /* insque/remque require initial list entry to be self-terminated */ 952 oldstate->next = oldstate; 953 oldstate->prev = oldstate; 954 sip->oldstate = oldstate; 955 956 957 sip->dss_npaths = dss_npaths; 958 sip->dss_paths = kmem_alloc(dss_npaths * 959 sizeof (rfs4_dss_path_t *), KM_SLEEP); 960 961 for (i = 0; i < dss_npaths; i++) { 962 sip->dss_paths[i] = 963 rfs4_dss_newpath(nsrv4, sip, dss_paths[i], i); 964 } 965 966 mutex_enter(&nsrv4->servinst_lock); 967 if (nsrv4->nfs4_cur_servinst != NULL) { 968 /* add to linked list */ 969 sip->prev = nsrv4->nfs4_cur_servinst; 970 nsrv4->nfs4_cur_servinst->next = sip; 971 } 972 if (start_grace) 973 rfs4_grace_start(sip); 974 /* make the new instance "current" */ 975 nsrv4->nfs4_cur_servinst = sip; 976 977 mutex_exit(&nsrv4->servinst_lock); 978 } 979 980 /* 981 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 982 * all instances directly. 983 */ 984 void 985 rfs4_servinst_destroy_all(nfs4_srv_t *nsrv4) 986 { 987 rfs4_servinst_t *sip, *prev, *current; 988 #ifdef DEBUG 989 int n = 0; 990 #endif 991 992 mutex_enter(&nsrv4->servinst_lock); 993 ASSERT(nsrv4->nfs4_cur_servinst != NULL); 994 current = nsrv4->nfs4_cur_servinst; 995 nsrv4->nfs4_cur_servinst = NULL; 996 for (sip = current; sip != NULL; sip = prev) { 997 prev = sip->prev; 998 rw_destroy(&sip->rwlock); 999 if (sip->oldstate) 1000 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 1001 if (sip->dss_paths) { 1002 int i = sip->dss_npaths; 1003 1004 while (i > 0) { 1005 i--; 1006 if (sip->dss_paths[i] != NULL) { 1007 char *path = sip->dss_paths[i]->path; 1008 1009 if (path != NULL) { 1010 kmem_free(path, 1011 strlen(path) + 1); 1012 } 1013 kmem_free(sip->dss_paths[i], 1014 sizeof (rfs4_dss_path_t)); 1015 } 1016 } 1017 kmem_free(sip->dss_paths, 1018 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 1019 } 1020 kmem_free(sip, sizeof (rfs4_servinst_t)); 1021 #ifdef DEBUG 1022 n++; 1023 #endif 1024 } 1025 mutex_exit(&nsrv4->servinst_lock); 1026 } 1027 1028 /* 1029 * Assign the current server instance to a client_t. 1030 * Should be called with cp->rc_dbe held. 1031 */ 1032 void 1033 rfs4_servinst_assign(nfs4_srv_t *nsrv4, rfs4_client_t *cp, 1034 rfs4_servinst_t *sip) 1035 { 1036 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 1037 1038 /* 1039 * The lock ensures that if the current instance is in the process 1040 * of changing, we will see the new one. 1041 */ 1042 mutex_enter(&nsrv4->servinst_lock); 1043 cp->rc_server_instance = sip; 1044 mutex_exit(&nsrv4->servinst_lock); 1045 } 1046 1047 rfs4_servinst_t * 1048 rfs4_servinst(rfs4_client_t *cp) 1049 { 1050 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 1051 1052 return (cp->rc_server_instance); 1053 } 1054 1055 /* ARGSUSED */ 1056 static void 1057 nullfree(caddr_t resop) 1058 { 1059 } 1060 1061 /* 1062 * This is a fall-through for invalid or not implemented (yet) ops 1063 */ 1064 /* ARGSUSED */ 1065 static void 1066 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1067 struct compound_state *cs) 1068 { 1069 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 1070 } 1071 1072 /* 1073 * Check if the security flavor, nfsnum, is in the flavor_list. 1074 */ 1075 bool_t 1076 in_flavor_list(int nfsnum, int *flavor_list, int count) 1077 { 1078 int i; 1079 1080 for (i = 0; i < count; i++) { 1081 if (nfsnum == flavor_list[i]) 1082 return (TRUE); 1083 } 1084 return (FALSE); 1085 } 1086 1087 /* 1088 * Used by rfs4_op_secinfo to get the security information from the 1089 * export structure associated with the component. 1090 */ 1091 /* ARGSUSED */ 1092 nfsstat4 1093 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 1094 { 1095 int error, different_export = 0; 1096 vnode_t *dvp, *vp; 1097 struct exportinfo *exi; 1098 fid_t fid; 1099 uint_t count, i; 1100 secinfo4 *resok_val; 1101 struct secinfo *secp; 1102 seconfig_t *si; 1103 bool_t did_traverse = FALSE; 1104 int dotdot, walk; 1105 nfs_export_t *ne = nfs_get_export(); 1106 1107 dvp = cs->vp; 1108 exi = cs->exi; 1109 ASSERT(exi != NULL); 1110 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 1111 1112 /* 1113 * If dotdotting, then need to check whether it's above the 1114 * root of a filesystem, or above an export point. 1115 */ 1116 if (dotdot) { 1117 vnode_t *zone_rootvp = ne->exi_root->exi_vp; 1118 1119 ASSERT3U(exi->exi_zoneid, ==, ne->exi_root->exi_zoneid); 1120 /* 1121 * If dotdotting at the root of a filesystem, then 1122 * need to traverse back to the mounted-on filesystem 1123 * and do the dotdot lookup there. 1124 */ 1125 if ((dvp->v_flag & VROOT) || VN_CMP(dvp, zone_rootvp)) { 1126 1127 /* 1128 * If at the system root, then can 1129 * go up no further. 1130 */ 1131 if (VN_CMP(dvp, zone_rootvp)) 1132 return (puterrno4(ENOENT)); 1133 1134 /* 1135 * Traverse back to the mounted-on filesystem 1136 */ 1137 dvp = untraverse(dvp, zone_rootvp); 1138 1139 /* 1140 * Set the different_export flag so we remember 1141 * to pick up a new exportinfo entry for 1142 * this new filesystem. 1143 */ 1144 different_export = 1; 1145 } else { 1146 1147 /* 1148 * If dotdotting above an export point then set 1149 * the different_export to get new export info. 1150 */ 1151 different_export = nfs_exported(exi, dvp); 1152 } 1153 } 1154 1155 /* 1156 * Get the vnode for the component "nm". 1157 */ 1158 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 1159 NULL, NULL, NULL); 1160 if (error) 1161 return (puterrno4(error)); 1162 1163 /* 1164 * If the vnode is in a pseudo filesystem, or if the security flavor 1165 * used in the request is valid but not an explicitly shared flavor, 1166 * or the access bit indicates that this is a limited access, 1167 * check whether this vnode is visible. 1168 */ 1169 if (!different_export && 1170 (PSEUDO(exi) || !is_exported_sec(cs->nfsflavor, exi) || 1171 cs->access & CS_ACCESS_LIMITED)) { 1172 if (! nfs_visible(exi, vp, &different_export)) { 1173 VN_RELE(vp); 1174 return (puterrno4(ENOENT)); 1175 } 1176 } 1177 1178 /* 1179 * If it's a mountpoint, then traverse it. 1180 */ 1181 if (vn_ismntpt(vp)) { 1182 if ((error = traverse(&vp)) != 0) { 1183 VN_RELE(vp); 1184 return (puterrno4(error)); 1185 } 1186 /* remember that we had to traverse mountpoint */ 1187 did_traverse = TRUE; 1188 different_export = 1; 1189 } else if (vp->v_vfsp != dvp->v_vfsp) { 1190 /* 1191 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 1192 * then vp is probably an LOFS object. We don't need the 1193 * realvp, we just need to know that we might have crossed 1194 * a server fs boundary and need to call checkexport4. 1195 * (LOFS lookup hides server fs mountpoints, and actually calls 1196 * traverse) 1197 */ 1198 different_export = 1; 1199 } 1200 1201 /* 1202 * Get the export information for it. 1203 */ 1204 if (different_export) { 1205 1206 bzero(&fid, sizeof (fid)); 1207 fid.fid_len = MAXFIDSZ; 1208 error = vop_fid_pseudo(vp, &fid); 1209 if (error) { 1210 VN_RELE(vp); 1211 return (puterrno4(error)); 1212 } 1213 1214 /* We'll need to reassign "exi". */ 1215 if (dotdot) 1216 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 1217 else 1218 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 1219 1220 if (exi == NULL) { 1221 if (did_traverse == TRUE) { 1222 /* 1223 * If this vnode is a mounted-on vnode, 1224 * but the mounted-on file system is not 1225 * exported, send back the secinfo for 1226 * the exported node that the mounted-on 1227 * vnode lives in. 1228 */ 1229 exi = cs->exi; 1230 } else { 1231 VN_RELE(vp); 1232 return (puterrno4(EACCES)); 1233 } 1234 } 1235 } 1236 ASSERT(exi != NULL); 1237 1238 1239 /* 1240 * Create the secinfo result based on the security information 1241 * from the exportinfo structure (exi). 1242 * 1243 * Return all flavors for a pseudo node. 1244 * For a real export node, return the flavor that the client 1245 * has access with. 1246 */ 1247 ASSERT(RW_LOCK_HELD(&ne->exported_lock)); 1248 if (PSEUDO(exi)) { 1249 count = exi->exi_export.ex_seccnt; /* total sec count */ 1250 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1251 secp = exi->exi_export.ex_secinfo; 1252 1253 for (i = 0; i < count; i++) { 1254 si = &secp[i].s_secinfo; 1255 resok_val[i].flavor = si->sc_rpcnum; 1256 if (resok_val[i].flavor == RPCSEC_GSS) { 1257 rpcsec_gss_info *info; 1258 1259 info = &resok_val[i].flavor_info; 1260 info->qop = si->sc_qop; 1261 info->service = (rpc_gss_svc_t)si->sc_service; 1262 1263 /* get oid opaque data */ 1264 info->oid.sec_oid4_len = 1265 si->sc_gss_mech_type->length; 1266 info->oid.sec_oid4_val = kmem_alloc( 1267 si->sc_gss_mech_type->length, KM_SLEEP); 1268 bcopy( 1269 si->sc_gss_mech_type->elements, 1270 info->oid.sec_oid4_val, 1271 info->oid.sec_oid4_len); 1272 } 1273 } 1274 resp->SECINFO4resok_len = count; 1275 resp->SECINFO4resok_val = resok_val; 1276 } else { 1277 int ret_cnt = 0, k = 0; 1278 int *flavor_list; 1279 1280 count = exi->exi_export.ex_seccnt; /* total sec count */ 1281 secp = exi->exi_export.ex_secinfo; 1282 1283 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1284 /* find out which flavors to return */ 1285 for (i = 0; i < count; i ++) { 1286 int access, flavor, perm; 1287 1288 flavor = secp[i].s_secinfo.sc_nfsnum; 1289 perm = secp[i].s_flags; 1290 1291 access = nfsauth4_secinfo_access(exi, cs->req, 1292 flavor, perm, cs->basecr); 1293 1294 if (! (access & NFSAUTH_DENIED) && 1295 ! (access & NFSAUTH_WRONGSEC)) { 1296 flavor_list[ret_cnt] = flavor; 1297 ret_cnt++; 1298 } 1299 } 1300 1301 /* Create the returning SECINFO value */ 1302 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1303 1304 for (i = 0; i < count; i++) { 1305 /* 1306 * If the flavor is in the flavor list, 1307 * fill in resok_val. 1308 */ 1309 si = &secp[i].s_secinfo; 1310 if (in_flavor_list(si->sc_nfsnum, 1311 flavor_list, ret_cnt)) { 1312 resok_val[k].flavor = si->sc_rpcnum; 1313 if (resok_val[k].flavor == RPCSEC_GSS) { 1314 rpcsec_gss_info *info; 1315 1316 info = &resok_val[k].flavor_info; 1317 info->qop = si->sc_qop; 1318 info->service = (rpc_gss_svc_t) 1319 si->sc_service; 1320 1321 /* get oid opaque data */ 1322 info->oid.sec_oid4_len = 1323 si->sc_gss_mech_type->length; 1324 info->oid.sec_oid4_val = kmem_alloc( 1325 si->sc_gss_mech_type->length, 1326 KM_SLEEP); 1327 bcopy(si->sc_gss_mech_type->elements, 1328 info->oid.sec_oid4_val, 1329 info->oid.sec_oid4_len); 1330 } 1331 k++; 1332 } 1333 if (k >= ret_cnt) 1334 break; 1335 } 1336 resp->SECINFO4resok_len = ret_cnt; 1337 resp->SECINFO4resok_val = resok_val; 1338 kmem_free(flavor_list, count * sizeof (int)); 1339 } 1340 1341 VN_RELE(vp); 1342 return (NFS4_OK); 1343 } 1344 1345 /* 1346 * SECINFO (Operation 33): Obtain required security information on 1347 * the component name in the format of (security-mechanism-oid, qop, service) 1348 * triplets. 1349 */ 1350 /* ARGSUSED */ 1351 static void 1352 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1353 struct compound_state *cs) 1354 { 1355 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1356 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1357 utf8string *utfnm = &args->name; 1358 uint_t len; 1359 char *nm; 1360 struct sockaddr *ca; 1361 char *name = NULL; 1362 nfsstat4 status = NFS4_OK; 1363 1364 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1365 SECINFO4args *, args); 1366 1367 /* 1368 * Current file handle (cfh) should have been set before getting 1369 * into this function. If not, return error. 1370 */ 1371 if (cs->vp == NULL) { 1372 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1373 goto out; 1374 } 1375 1376 if (cs->vp->v_type != VDIR) { 1377 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1378 goto out; 1379 } 1380 1381 /* 1382 * Verify the component name. If failed, error out, but 1383 * do not error out if the component name is a "..". 1384 * SECINFO will return its parents secinfo data for SECINFO "..". 1385 */ 1386 status = utf8_dir_verify(utfnm); 1387 if (status != NFS4_OK) { 1388 if (utfnm->utf8string_len != 2 || 1389 utfnm->utf8string_val[0] != '.' || 1390 utfnm->utf8string_val[1] != '.') { 1391 *cs->statusp = resp->status = status; 1392 goto out; 1393 } 1394 } 1395 1396 nm = utf8_to_str(utfnm, &len, NULL); 1397 if (nm == NULL) { 1398 *cs->statusp = resp->status = NFS4ERR_INVAL; 1399 goto out; 1400 } 1401 1402 if (len > MAXNAMELEN) { 1403 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1404 kmem_free(nm, len); 1405 goto out; 1406 } 1407 1408 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1409 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1410 MAXPATHLEN + 1); 1411 1412 if (name == NULL) { 1413 *cs->statusp = resp->status = NFS4ERR_INVAL; 1414 kmem_free(nm, len); 1415 goto out; 1416 } 1417 1418 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1419 1420 if (resp->status == NFS4_OK && rfs4_has_session(cs)) { 1421 /* 1422 * See rfc 5661 section 2.6.3.1.1.8 and 18.29.3 1423 * 1424 * 2.6.3.1.1.8 1425 * SECINFO and SECINFO_NO_NAME consume the current 1426 * filehandle (note that this is a change from NFSv4.0). 1427 * 1428 * 18.29.3 1429 * On success, the current filehandle is consumed (see 1430 * Section 2.6.3.1.1.8), and if the next operation after 1431 * SECINFO tries to use the current filehandle, that 1432 * operation will fail with the status 1433 * NFS4ERR_NOFILEHANDLE. 1434 */ 1435 VN_RELE(cs->vp); 1436 cs->vp = NULL; 1437 } 1438 1439 if (name != nm) 1440 kmem_free(name, MAXPATHLEN + 1); 1441 kmem_free(nm, len); 1442 1443 out: 1444 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1445 SECINFO4res *, resp); 1446 } 1447 1448 /* 1449 * Free SECINFO result. 1450 */ 1451 /* ARGSUSED */ 1452 static void 1453 rfs4_op_secinfo_free(nfs_resop4 *resop) 1454 { 1455 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1456 int count, i; 1457 secinfo4 *resok_val; 1458 1459 /* If this is not an Ok result, nothing to free. */ 1460 if (resp->status != NFS4_OK) { 1461 return; 1462 } 1463 1464 count = resp->SECINFO4resok_len; 1465 resok_val = resp->SECINFO4resok_val; 1466 1467 for (i = 0; i < count; i++) { 1468 if (resok_val[i].flavor == RPCSEC_GSS) { 1469 rpcsec_gss_info *info; 1470 1471 info = &resok_val[i].flavor_info; 1472 kmem_free(info->oid.sec_oid4_val, 1473 info->oid.sec_oid4_len); 1474 } 1475 } 1476 kmem_free(resok_val, count * sizeof (secinfo4)); 1477 resp->SECINFO4resok_len = 0; 1478 resp->SECINFO4resok_val = NULL; 1479 } 1480 1481 /* ARGSUSED */ 1482 static void 1483 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1484 struct compound_state *cs) 1485 { 1486 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1487 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1488 int error; 1489 vnode_t *vp; 1490 struct vattr va; 1491 int checkwriteperm; 1492 cred_t *cr = cs->cr; 1493 bslabel_t *clabel, *slabel; 1494 ts_label_t *tslabel; 1495 boolean_t admin_low_client; 1496 1497 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1498 ACCESS4args *, args); 1499 1500 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1501 if (cs->access == CS_ACCESS_DENIED) { 1502 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1503 goto out; 1504 } 1505 #endif 1506 if (cs->vp == NULL) { 1507 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1508 goto out; 1509 } 1510 1511 ASSERT(cr != NULL); 1512 1513 vp = cs->vp; 1514 1515 /* 1516 * If the file system is exported read only, it is not appropriate 1517 * to check write permissions for regular files and directories. 1518 * Special files are interpreted by the client, so the underlying 1519 * permissions are sent back to the client for interpretation. 1520 */ 1521 if (rdonly4(req, cs) && 1522 (vp->v_type == VREG || vp->v_type == VDIR)) 1523 checkwriteperm = 0; 1524 else 1525 checkwriteperm = 1; 1526 1527 /* 1528 * XXX 1529 * We need the mode so that we can correctly determine access 1530 * permissions relative to a mandatory lock file. Access to 1531 * mandatory lock files is denied on the server, so it might 1532 * as well be reflected to the server during the open. 1533 */ 1534 va.va_mask = AT_MODE; 1535 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1536 if (error) { 1537 *cs->statusp = resp->status = puterrno4(error); 1538 goto out; 1539 } 1540 resp->access = 0; 1541 resp->supported = 0; 1542 1543 if (is_system_labeled()) { 1544 ASSERT(req->rq_label != NULL); 1545 clabel = req->rq_label; 1546 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1547 "got client label from request(1)", 1548 struct svc_req *, req); 1549 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1550 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1551 *cs->statusp = resp->status = puterrno4(EACCES); 1552 goto out; 1553 } 1554 slabel = label2bslabel(tslabel); 1555 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1556 char *, "got server label(1) for vp(2)", 1557 bslabel_t *, slabel, vnode_t *, vp); 1558 1559 admin_low_client = B_FALSE; 1560 } else 1561 admin_low_client = B_TRUE; 1562 } 1563 1564 if (args->access & ACCESS4_READ) { 1565 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1566 if (!error && !MANDLOCK(vp, va.va_mode) && 1567 (!is_system_labeled() || admin_low_client || 1568 bldominates(clabel, slabel))) 1569 resp->access |= ACCESS4_READ; 1570 resp->supported |= ACCESS4_READ; 1571 } 1572 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1573 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1574 if (!error && (!is_system_labeled() || admin_low_client || 1575 bldominates(clabel, slabel))) 1576 resp->access |= ACCESS4_LOOKUP; 1577 resp->supported |= ACCESS4_LOOKUP; 1578 } 1579 if (checkwriteperm && 1580 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1581 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1582 if (!error && !MANDLOCK(vp, va.va_mode) && 1583 (!is_system_labeled() || admin_low_client || 1584 blequal(clabel, slabel))) 1585 resp->access |= 1586 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1587 resp->supported |= 1588 resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND); 1589 } 1590 1591 if (checkwriteperm && 1592 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1593 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1594 if (!error && (!is_system_labeled() || admin_low_client || 1595 blequal(clabel, slabel))) 1596 resp->access |= ACCESS4_DELETE; 1597 resp->supported |= ACCESS4_DELETE; 1598 } 1599 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1600 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1601 if (!error && !MANDLOCK(vp, va.va_mode) && 1602 (!is_system_labeled() || admin_low_client || 1603 bldominates(clabel, slabel))) 1604 resp->access |= ACCESS4_EXECUTE; 1605 resp->supported |= ACCESS4_EXECUTE; 1606 } 1607 1608 if (is_system_labeled() && !admin_low_client) 1609 label_rele(tslabel); 1610 1611 *cs->statusp = resp->status = NFS4_OK; 1612 out: 1613 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1614 ACCESS4res *, resp); 1615 } 1616 1617 /* ARGSUSED */ 1618 static void 1619 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1620 struct compound_state *cs) 1621 { 1622 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1623 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1624 int error; 1625 vnode_t *vp = cs->vp; 1626 cred_t *cr = cs->cr; 1627 vattr_t va; 1628 nfs4_srv_t *nsrv4; 1629 1630 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1631 COMMIT4args *, args); 1632 1633 if (vp == NULL) { 1634 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1635 goto out; 1636 } 1637 if (cs->access == CS_ACCESS_DENIED) { 1638 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1639 goto out; 1640 } 1641 1642 if (args->offset + args->count < args->offset) { 1643 *cs->statusp = resp->status = NFS4ERR_INVAL; 1644 goto out; 1645 } 1646 1647 va.va_mask = AT_UID; 1648 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1649 1650 /* 1651 * If we can't get the attributes, then we can't do the 1652 * right access checking. So, we'll fail the request. 1653 */ 1654 if (error) { 1655 *cs->statusp = resp->status = puterrno4(error); 1656 goto out; 1657 } 1658 if (rdonly4(req, cs)) { 1659 *cs->statusp = resp->status = NFS4ERR_ROFS; 1660 goto out; 1661 } 1662 1663 if (vp->v_type != VREG) { 1664 if (vp->v_type == VDIR) 1665 resp->status = NFS4ERR_ISDIR; 1666 else 1667 resp->status = NFS4ERR_INVAL; 1668 *cs->statusp = resp->status; 1669 goto out; 1670 } 1671 1672 if (crgetuid(cr) != va.va_uid && 1673 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1674 *cs->statusp = resp->status = puterrno4(error); 1675 goto out; 1676 } 1677 1678 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1679 1680 if (error) { 1681 *cs->statusp = resp->status = puterrno4(error); 1682 goto out; 1683 } 1684 1685 nsrv4 = nfs4_get_srv(); 1686 *cs->statusp = resp->status = NFS4_OK; 1687 resp->writeverf = nsrv4->write4verf; 1688 out: 1689 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1690 COMMIT4res *, resp); 1691 } 1692 1693 /* 1694 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1695 * was completed. It does the nfsv4 create for special files. 1696 */ 1697 /* ARGSUSED */ 1698 static vnode_t * 1699 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1700 struct compound_state *cs, vattr_t *vap, char *nm) 1701 { 1702 int error; 1703 cred_t *cr = cs->cr; 1704 vnode_t *dvp = cs->vp; 1705 vnode_t *vp = NULL; 1706 int mode; 1707 enum vcexcl excl; 1708 1709 switch (args->type) { 1710 case NF4CHR: 1711 case NF4BLK: 1712 if (secpolicy_sys_devices(cr) != 0) { 1713 *cs->statusp = resp->status = NFS4ERR_PERM; 1714 return (NULL); 1715 } 1716 if (args->type == NF4CHR) 1717 vap->va_type = VCHR; 1718 else 1719 vap->va_type = VBLK; 1720 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1721 args->ftype4_u.devdata.specdata2); 1722 vap->va_mask |= AT_RDEV; 1723 break; 1724 case NF4SOCK: 1725 vap->va_type = VSOCK; 1726 break; 1727 case NF4FIFO: 1728 vap->va_type = VFIFO; 1729 break; 1730 default: 1731 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1732 return (NULL); 1733 } 1734 1735 /* 1736 * Must specify the mode. 1737 */ 1738 if (!(vap->va_mask & AT_MODE)) { 1739 *cs->statusp = resp->status = NFS4ERR_INVAL; 1740 return (NULL); 1741 } 1742 1743 excl = EXCL; 1744 1745 mode = 0; 1746 1747 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1748 if (error) { 1749 *cs->statusp = resp->status = puterrno4(error); 1750 return (NULL); 1751 } 1752 return (vp); 1753 } 1754 1755 /* 1756 * nfsv4 create is used to create non-regular files. For regular files, 1757 * use nfsv4 open. 1758 */ 1759 /* ARGSUSED */ 1760 static void 1761 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1762 struct compound_state *cs) 1763 { 1764 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1765 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1766 int error; 1767 struct vattr bva, iva, iva2, ava, *vap; 1768 cred_t *cr = cs->cr; 1769 vnode_t *dvp = cs->vp; 1770 vnode_t *vp = NULL; 1771 vnode_t *realvp; 1772 char *nm, *lnm; 1773 uint_t len, llen; 1774 int syncval = 0; 1775 struct nfs4_svgetit_arg sarg; 1776 struct nfs4_ntov_table ntov; 1777 struct statvfs64 sb; 1778 nfsstat4 status; 1779 struct sockaddr *ca; 1780 char *name = NULL; 1781 char *lname = NULL; 1782 1783 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1784 CREATE4args *, args); 1785 1786 resp->attrset = 0; 1787 1788 if (dvp == NULL) { 1789 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1790 goto out; 1791 } 1792 1793 /* 1794 * If there is an unshared filesystem mounted on this vnode, 1795 * do not allow to create an object in this directory. 1796 */ 1797 if (vn_ismntpt(dvp)) { 1798 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1799 goto out; 1800 } 1801 1802 /* Verify that type is correct */ 1803 switch (args->type) { 1804 case NF4LNK: 1805 case NF4BLK: 1806 case NF4CHR: 1807 case NF4SOCK: 1808 case NF4FIFO: 1809 case NF4DIR: 1810 break; 1811 default: 1812 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1813 goto out; 1814 }; 1815 1816 if (cs->access == CS_ACCESS_DENIED) { 1817 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1818 goto out; 1819 } 1820 if (dvp->v_type != VDIR) { 1821 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1822 goto out; 1823 } 1824 status = utf8_dir_verify(&args->objname); 1825 if (status != NFS4_OK) { 1826 *cs->statusp = resp->status = status; 1827 goto out; 1828 } 1829 1830 if (rdonly4(req, cs)) { 1831 *cs->statusp = resp->status = NFS4ERR_ROFS; 1832 goto out; 1833 } 1834 1835 /* 1836 * Name of newly created object 1837 */ 1838 nm = utf8_to_fn(&args->objname, &len, NULL); 1839 if (nm == NULL) { 1840 *cs->statusp = resp->status = NFS4ERR_INVAL; 1841 goto out; 1842 } 1843 1844 if (len > MAXNAMELEN) { 1845 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1846 kmem_free(nm, len); 1847 goto out; 1848 } 1849 1850 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1851 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1852 MAXPATHLEN + 1); 1853 1854 if (name == NULL) { 1855 *cs->statusp = resp->status = NFS4ERR_INVAL; 1856 kmem_free(nm, len); 1857 goto out; 1858 } 1859 1860 resp->attrset = 0; 1861 1862 sarg.sbp = &sb; 1863 sarg.is_referral = B_FALSE; 1864 nfs4_ntov_table_init(&ntov); 1865 1866 status = do_rfs4_set_attrs(&resp->attrset, 1867 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1868 1869 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1870 status = NFS4ERR_INVAL; 1871 1872 if (status != NFS4_OK) { 1873 *cs->statusp = resp->status = status; 1874 if (name != nm) 1875 kmem_free(name, MAXPATHLEN + 1); 1876 kmem_free(nm, len); 1877 nfs4_ntov_table_free(&ntov, &sarg); 1878 resp->attrset = 0; 1879 goto out; 1880 } 1881 1882 /* Get "before" change value */ 1883 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1884 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1885 if (error) { 1886 *cs->statusp = resp->status = puterrno4(error); 1887 if (name != nm) 1888 kmem_free(name, MAXPATHLEN + 1); 1889 kmem_free(nm, len); 1890 nfs4_ntov_table_free(&ntov, &sarg); 1891 resp->attrset = 0; 1892 goto out; 1893 } 1894 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1895 1896 vap = sarg.vap; 1897 1898 /* 1899 * Set the default initial values for attributes when the parent 1900 * directory does not have the VSUID/VSGID bit set and they have 1901 * not been specified in createattrs. 1902 */ 1903 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1904 vap->va_uid = crgetuid(cr); 1905 vap->va_mask |= AT_UID; 1906 } 1907 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1908 vap->va_gid = crgetgid(cr); 1909 vap->va_mask |= AT_GID; 1910 } 1911 1912 vap->va_mask |= AT_TYPE; 1913 switch (args->type) { 1914 case NF4DIR: 1915 vap->va_type = VDIR; 1916 if ((vap->va_mask & AT_MODE) == 0) { 1917 vap->va_mode = 0700; /* default: owner rwx only */ 1918 vap->va_mask |= AT_MODE; 1919 } 1920 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1921 if (error) 1922 break; 1923 1924 /* 1925 * Get the initial "after" sequence number, if it fails, 1926 * set to zero 1927 */ 1928 iva.va_mask = AT_SEQ; 1929 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1930 iva.va_seq = 0; 1931 break; 1932 case NF4LNK: 1933 vap->va_type = VLNK; 1934 if ((vap->va_mask & AT_MODE) == 0) { 1935 vap->va_mode = 0700; /* default: owner rwx only */ 1936 vap->va_mask |= AT_MODE; 1937 } 1938 1939 /* 1940 * symlink names must be treated as data 1941 */ 1942 lnm = utf8_to_str((utf8string *)&args->ftype4_u.linkdata, 1943 &llen, NULL); 1944 1945 if (lnm == NULL) { 1946 *cs->statusp = resp->status = NFS4ERR_INVAL; 1947 if (name != nm) 1948 kmem_free(name, MAXPATHLEN + 1); 1949 kmem_free(nm, len); 1950 nfs4_ntov_table_free(&ntov, &sarg); 1951 resp->attrset = 0; 1952 goto out; 1953 } 1954 1955 if (llen > MAXPATHLEN) { 1956 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1957 if (name != nm) 1958 kmem_free(name, MAXPATHLEN + 1); 1959 kmem_free(nm, len); 1960 kmem_free(lnm, llen); 1961 nfs4_ntov_table_free(&ntov, &sarg); 1962 resp->attrset = 0; 1963 goto out; 1964 } 1965 1966 lname = nfscmd_convname(ca, cs->exi, lnm, 1967 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1968 1969 if (lname == NULL) { 1970 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1971 if (name != nm) 1972 kmem_free(name, MAXPATHLEN + 1); 1973 kmem_free(nm, len); 1974 kmem_free(lnm, llen); 1975 nfs4_ntov_table_free(&ntov, &sarg); 1976 resp->attrset = 0; 1977 goto out; 1978 } 1979 1980 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1981 if (lname != lnm) 1982 kmem_free(lname, MAXPATHLEN + 1); 1983 kmem_free(lnm, llen); 1984 if (error) 1985 break; 1986 1987 /* 1988 * Get the initial "after" sequence number, if it fails, 1989 * set to zero 1990 */ 1991 iva.va_mask = AT_SEQ; 1992 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1993 iva.va_seq = 0; 1994 1995 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, 1996 NULL, NULL, NULL); 1997 if (error) 1998 break; 1999 2000 /* 2001 * va_seq is not safe over VOP calls, check it again 2002 * if it has changed zero out iva to force atomic = FALSE. 2003 */ 2004 iva2.va_mask = AT_SEQ; 2005 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 2006 iva2.va_seq != iva.va_seq) 2007 iva.va_seq = 0; 2008 break; 2009 default: 2010 /* 2011 * probably a special file. 2012 */ 2013 if ((vap->va_mask & AT_MODE) == 0) { 2014 vap->va_mode = 0600; /* default: owner rw only */ 2015 vap->va_mask |= AT_MODE; 2016 } 2017 syncval = FNODSYNC; 2018 /* 2019 * We know this will only generate one VOP call 2020 */ 2021 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); 2022 2023 if (vp == NULL) { 2024 if (name != nm) 2025 kmem_free(name, MAXPATHLEN + 1); 2026 kmem_free(nm, len); 2027 nfs4_ntov_table_free(&ntov, &sarg); 2028 resp->attrset = 0; 2029 goto out; 2030 } 2031 2032 /* 2033 * Get the initial "after" sequence number, if it fails, 2034 * set to zero 2035 */ 2036 iva.va_mask = AT_SEQ; 2037 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 2038 iva.va_seq = 0; 2039 2040 break; 2041 } 2042 if (name != nm) 2043 kmem_free(name, MAXPATHLEN + 1); 2044 kmem_free(nm, len); 2045 2046 if (error) { 2047 *cs->statusp = resp->status = puterrno4(error); 2048 } 2049 2050 /* 2051 * Force modified data and metadata out to stable storage. 2052 */ 2053 (void) VOP_FSYNC(dvp, 0, cr, NULL); 2054 2055 if (resp->status != NFS4_OK) { 2056 if (vp != NULL) 2057 VN_RELE(vp); 2058 nfs4_ntov_table_free(&ntov, &sarg); 2059 resp->attrset = 0; 2060 goto out; 2061 } 2062 2063 /* 2064 * Finish setup of cinfo response, "before" value already set. 2065 * Get "after" change value, if it fails, simply return the 2066 * before value. 2067 */ 2068 ava.va_mask = AT_CTIME|AT_SEQ; 2069 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 2070 ava.va_ctime = bva.va_ctime; 2071 ava.va_seq = 0; 2072 } 2073 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 2074 2075 /* 2076 * True verification that object was created with correct 2077 * attrs is impossible. The attrs could have been changed 2078 * immediately after object creation. If attributes did 2079 * not verify, the only recourse for the server is to 2080 * destroy the object. Maybe if some attrs (like gid) 2081 * are set incorrectly, the object should be destroyed; 2082 * however, seems bad as a default policy. Do we really 2083 * want to destroy an object over one of the times not 2084 * verifying correctly? For these reasons, the server 2085 * currently sets bits in attrset for createattrs 2086 * that were set; however, no verification is done. 2087 * 2088 * vmask_to_nmask accounts for vattr bits set on create 2089 * [do_rfs4_set_attrs() only sets resp bits for 2090 * non-vattr/vfs bits.] 2091 * Mask off any bits set by default so as not to return 2092 * more attrset bits than were requested in createattrs 2093 */ 2094 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 2095 resp->attrset &= args->createattrs.attrmask; 2096 nfs4_ntov_table_free(&ntov, &sarg); 2097 2098 error = makefh4(&cs->fh, vp, cs->exi); 2099 if (error) { 2100 *cs->statusp = resp->status = puterrno4(error); 2101 } 2102 2103 /* 2104 * The cinfo.atomic = TRUE only if we got no errors, we have 2105 * non-zero va_seq's, and it has incremented by exactly one 2106 * during the creation and it didn't change during the VOP_LOOKUP 2107 * or VOP_FSYNC. 2108 */ 2109 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 2110 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 2111 resp->cinfo.atomic = TRUE; 2112 else 2113 resp->cinfo.atomic = FALSE; 2114 2115 /* 2116 * Force modified metadata out to stable storage. 2117 * 2118 * if a underlying vp exists, pass it to VOP_FSYNC 2119 */ 2120 if (VOP_REALVP(vp, &realvp, NULL) == 0) 2121 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 2122 else 2123 (void) VOP_FSYNC(vp, syncval, cr, NULL); 2124 2125 if (resp->status != NFS4_OK) { 2126 VN_RELE(vp); 2127 goto out; 2128 } 2129 if (cs->vp) 2130 VN_RELE(cs->vp); 2131 2132 cs->vp = vp; 2133 *cs->statusp = resp->status = NFS4_OK; 2134 out: 2135 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 2136 CREATE4res *, resp); 2137 } 2138 2139 /*ARGSUSED*/ 2140 static void 2141 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2142 struct compound_state *cs) 2143 { 2144 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 2145 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 2146 2147 rfs4_op_inval(argop, resop, req, cs); 2148 2149 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 2150 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 2151 } 2152 2153 /*ARGSUSED*/ 2154 static void 2155 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2156 struct compound_state *cs) 2157 { 2158 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 2159 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 2160 rfs4_deleg_state_t *dsp; 2161 nfsstat4 status; 2162 2163 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 2164 DELEGRETURN4args *, args); 2165 2166 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 2167 resp->status = *cs->statusp = status; 2168 if (status != NFS4_OK) 2169 goto out; 2170 2171 /* Ensure specified filehandle matches */ 2172 if (cs->vp != dsp->rds_finfo->rf_vp) { 2173 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 2174 } else 2175 rfs4_return_deleg(dsp, FALSE); 2176 2177 rfs4_update_lease(dsp->rds_client); 2178 2179 rfs4_deleg_state_rele(dsp); 2180 out: 2181 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 2182 DELEGRETURN4res *, resp); 2183 } 2184 2185 /* 2186 * Check to see if a given "flavor" is an explicitly shared flavor. 2187 * The assumption of this routine is the "flavor" is already a valid 2188 * flavor in the secinfo list of "exi". 2189 * 2190 * e.g. 2191 * # share -o sec=flavor1 /export 2192 * # share -o sec=flavor2 /export/home 2193 * 2194 * flavor2 is not an explicitly shared flavor for /export, 2195 * however it is in the secinfo list for /export thru the 2196 * server namespace setup. 2197 */ 2198 int 2199 is_exported_sec(int flavor, struct exportinfo *exi) 2200 { 2201 int i; 2202 struct secinfo *sp; 2203 2204 sp = exi->exi_export.ex_secinfo; 2205 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 2206 if (flavor == sp[i].s_secinfo.sc_nfsnum || 2207 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 2208 return (SEC_REF_EXPORTED(&sp[i])); 2209 } 2210 } 2211 2212 /* Should not reach this point based on the assumption */ 2213 return (0); 2214 } 2215 2216 /* 2217 * Check if the security flavor used in the request matches what is 2218 * required at the export point or at the root pseudo node (exi_root). 2219 * 2220 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 2221 * 2222 */ 2223 static int 2224 secinfo_match_or_authnone(struct compound_state *cs) 2225 { 2226 int i; 2227 struct secinfo *sp; 2228 2229 /* 2230 * Check cs->nfsflavor (from the request) against 2231 * the current export data in cs->exi. 2232 */ 2233 sp = cs->exi->exi_export.ex_secinfo; 2234 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 2235 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 2236 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 2237 return (1); 2238 } 2239 2240 return (0); 2241 } 2242 2243 /* 2244 * Check the access authority for the client and return the correct error. 2245 */ 2246 nfsstat4 2247 call_checkauth4(struct compound_state *cs, struct svc_req *req) 2248 { 2249 int authres; 2250 2251 /* 2252 * First, check if the security flavor used in the request 2253 * are among the flavors set in the server namespace. 2254 */ 2255 if (!secinfo_match_or_authnone(cs)) { 2256 *cs->statusp = NFS4ERR_WRONGSEC; 2257 return (*cs->statusp); 2258 } 2259 2260 authres = checkauth4(cs, req); 2261 2262 if (authres > 0) { 2263 *cs->statusp = NFS4_OK; 2264 if (! (cs->access & CS_ACCESS_LIMITED)) 2265 cs->access = CS_ACCESS_OK; 2266 } else if (authres == 0) { 2267 *cs->statusp = NFS4ERR_ACCESS; 2268 } else if (authres == -2) { 2269 *cs->statusp = NFS4ERR_WRONGSEC; 2270 } else { 2271 *cs->statusp = NFS4ERR_DELAY; 2272 } 2273 return (*cs->statusp); 2274 } 2275 2276 /* 2277 * bitmap4_to_attrmask is called by getattr and readdir. 2278 * It sets up the vattr mask and determines whether vfsstat call is needed 2279 * based on the input bitmap. 2280 * Returns nfsv4 status. 2281 */ 2282 static nfsstat4 2283 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2284 { 2285 int i; 2286 uint_t va_mask; 2287 struct statvfs64 *sbp = sargp->sbp; 2288 2289 sargp->sbp = NULL; 2290 sargp->flag = 0; 2291 sargp->rdattr_error = NFS4_OK; 2292 sargp->mntdfid_set = FALSE; 2293 if (sargp->cs->vp) 2294 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2295 FH4_ATTRDIR | FH4_NAMEDATTR); 2296 else 2297 sargp->xattr = 0; 2298 2299 /* 2300 * Set rdattr_error_req to true if return error per 2301 * failed entry rather than fail the readdir. 2302 */ 2303 if (breq & FATTR4_RDATTR_ERROR_MASK) 2304 sargp->rdattr_error_req = 1; 2305 else 2306 sargp->rdattr_error_req = 0; 2307 2308 /* 2309 * generate the va_mask 2310 * Handle the easy cases first 2311 */ 2312 switch (breq) { 2313 case NFS4_NTOV_ATTR_MASK: 2314 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2315 return (NFS4_OK); 2316 2317 case NFS4_FS_ATTR_MASK: 2318 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2319 sargp->sbp = sbp; 2320 return (NFS4_OK); 2321 2322 case NFS4_NTOV_ATTR_CACHE_MASK: 2323 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2324 return (NFS4_OK); 2325 2326 case FATTR4_LEASE_TIME_MASK: 2327 sargp->vap->va_mask = 0; 2328 return (NFS4_OK); 2329 2330 default: 2331 va_mask = 0; 2332 for (i = 0; i < nfs4_ntov_map_size; i++) { 2333 if ((breq & nfs4_ntov_map[i].fbit) && 2334 nfs4_ntov_map[i].vbit) 2335 va_mask |= nfs4_ntov_map[i].vbit; 2336 } 2337 2338 /* 2339 * Check is vfsstat is needed 2340 */ 2341 if (breq & NFS4_FS_ATTR_MASK) 2342 sargp->sbp = sbp; 2343 2344 sargp->vap->va_mask = va_mask; 2345 return (NFS4_OK); 2346 } 2347 /* NOTREACHED */ 2348 } 2349 2350 /* 2351 * bitmap4_get_sysattrs is called by getattr and readdir. 2352 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2353 * Returns nfsv4 status. 2354 */ 2355 static nfsstat4 2356 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2357 { 2358 int error; 2359 struct compound_state *cs = sargp->cs; 2360 vnode_t *vp = cs->vp; 2361 2362 if (sargp->sbp != NULL) { 2363 error = VFS_STATVFS(vp->v_vfsp, sargp->sbp); 2364 if (error != 0) { 2365 sargp->sbp = NULL; /* to identify error */ 2366 return (puterrno4(error)); 2367 } 2368 } 2369 2370 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2371 } 2372 2373 static void 2374 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2375 { 2376 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2377 KM_SLEEP); 2378 ntovp->attrcnt = 0; 2379 ntovp->vfsstat = FALSE; 2380 } 2381 2382 static void 2383 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2384 struct nfs4_svgetit_arg *sargp) 2385 { 2386 int i; 2387 union nfs4_attr_u *na; 2388 uint8_t *amap; 2389 2390 /* 2391 * XXX Should do the same checks for whether the bit is set 2392 */ 2393 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2394 i < ntovp->attrcnt; i++, na++, amap++) { 2395 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2396 NFS4ATTR_FREEIT, sargp, na); 2397 } 2398 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2399 /* 2400 * xdr_free for getattr will be done later 2401 */ 2402 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2403 i < ntovp->attrcnt; i++, na++, amap++) { 2404 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2405 } 2406 } 2407 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2408 } 2409 2410 /* 2411 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2412 */ 2413 static nfsstat4 2414 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2415 struct nfs4_svgetit_arg *sargp) 2416 { 2417 int error = 0; 2418 int i, k; 2419 struct nfs4_ntov_table ntov; 2420 XDR xdr; 2421 ulong_t xdr_size; 2422 char *xdr_attrs; 2423 nfsstat4 status = NFS4_OK; 2424 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2425 union nfs4_attr_u *na; 2426 uint8_t *amap; 2427 2428 sargp->op = NFS4ATTR_GETIT; 2429 sargp->flag = 0; 2430 2431 fattrp->attrmask = 0; 2432 /* if no bits requested, then return empty fattr4 */ 2433 if (breq == 0) { 2434 fattrp->attrlist4_len = 0; 2435 fattrp->attrlist4 = NULL; 2436 return (NFS4_OK); 2437 } 2438 2439 /* 2440 * return NFS4ERR_INVAL when client requests write-only attrs 2441 */ 2442 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2443 return (NFS4ERR_INVAL); 2444 2445 nfs4_ntov_table_init(&ntov); 2446 na = ntov.na; 2447 amap = ntov.amap; 2448 2449 /* 2450 * Now loop to get or verify the attrs 2451 */ 2452 for (i = 0; i < nfs4_ntov_map_size; i++) { 2453 if (breq & nfs4_ntov_map[i].fbit) { 2454 if ((*nfs4_ntov_map[i].sv_getit)( 2455 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2456 2457 error = (*nfs4_ntov_map[i].sv_getit)( 2458 NFS4ATTR_GETIT, sargp, na); 2459 2460 /* 2461 * Possible error values: 2462 * >0 if sv_getit failed to 2463 * get the attr; 0 if succeeded; 2464 * <0 if rdattr_error and the 2465 * attribute cannot be returned. 2466 */ 2467 if (error && !(sargp->rdattr_error_req)) 2468 goto done; 2469 /* 2470 * If error then just for entry 2471 */ 2472 if (error == 0) { 2473 fattrp->attrmask |= 2474 nfs4_ntov_map[i].fbit; 2475 *amap++ = 2476 (uint8_t)nfs4_ntov_map[i].nval; 2477 na++; 2478 (ntov.attrcnt)++; 2479 } else if ((error > 0) && 2480 (sargp->rdattr_error == NFS4_OK)) { 2481 sargp->rdattr_error = puterrno4(error); 2482 } 2483 error = 0; 2484 } 2485 } 2486 } 2487 2488 /* 2489 * If rdattr_error was set after the return value for it was assigned, 2490 * update it. 2491 */ 2492 if (prev_rdattr_error != sargp->rdattr_error) { 2493 na = ntov.na; 2494 amap = ntov.amap; 2495 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2496 k = *amap; 2497 if (k < FATTR4_RDATTR_ERROR) { 2498 continue; 2499 } 2500 if ((k == FATTR4_RDATTR_ERROR) && 2501 ((*nfs4_ntov_map[k].sv_getit)( 2502 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2503 2504 (void) (*nfs4_ntov_map[k].sv_getit)( 2505 NFS4ATTR_GETIT, sargp, na); 2506 } 2507 break; 2508 } 2509 } 2510 2511 xdr_size = 0; 2512 na = ntov.na; 2513 amap = ntov.amap; 2514 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2515 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2516 } 2517 2518 fattrp->attrlist4_len = xdr_size; 2519 if (xdr_size) { 2520 /* freed by rfs4_op_getattr_free() */ 2521 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2522 2523 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2524 2525 na = ntov.na; 2526 amap = ntov.amap; 2527 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2528 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2529 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2530 int, *amap); 2531 status = NFS4ERR_SERVERFAULT; 2532 break; 2533 } 2534 } 2535 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2536 } else { 2537 fattrp->attrlist4 = NULL; 2538 } 2539 done: 2540 2541 nfs4_ntov_table_free(&ntov, sargp); 2542 2543 if (error != 0) 2544 status = puterrno4(error); 2545 2546 return (status); 2547 } 2548 2549 /* ARGSUSED */ 2550 static void 2551 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2552 struct compound_state *cs) 2553 { 2554 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2555 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2556 struct nfs4_svgetit_arg sarg; 2557 struct statvfs64 sb; 2558 nfsstat4 status; 2559 2560 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2561 GETATTR4args *, args); 2562 2563 if (cs->vp == NULL) { 2564 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2565 goto out; 2566 } 2567 2568 if (cs->access == CS_ACCESS_DENIED) { 2569 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2570 goto out; 2571 } 2572 2573 sarg.sbp = &sb; 2574 sarg.cs = cs; 2575 sarg.is_referral = B_FALSE; 2576 2577 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2578 if (status == NFS4_OK) { 2579 2580 status = bitmap4_get_sysattrs(&sarg); 2581 if (status == NFS4_OK) { 2582 2583 /* Is this a referral? */ 2584 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2585 /* Older V4 Solaris client sees a link */ 2586 if (client_is_downrev(req)) 2587 sarg.vap->va_type = VLNK; 2588 else 2589 sarg.is_referral = B_TRUE; 2590 } 2591 2592 status = do_rfs4_op_getattr(args->attr_request, 2593 &resp->obj_attributes, &sarg); 2594 } 2595 } 2596 *cs->statusp = resp->status = status; 2597 out: 2598 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2599 GETATTR4res *, resp); 2600 } 2601 2602 static void 2603 rfs4_op_getattr_free(nfs_resop4 *resop) 2604 { 2605 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2606 2607 nfs4_fattr4_free(&resp->obj_attributes); 2608 } 2609 2610 /* ARGSUSED */ 2611 static void 2612 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2613 struct compound_state *cs) 2614 { 2615 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2616 2617 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2618 2619 if (cs->vp == NULL) { 2620 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2621 goto out; 2622 } 2623 if (cs->access == CS_ACCESS_DENIED) { 2624 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2625 goto out; 2626 } 2627 2628 /* check for reparse point at the share point */ 2629 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2630 /* it's all bad */ 2631 cs->exi->exi_moved = 1; 2632 *cs->statusp = resp->status = NFS4ERR_MOVED; 2633 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2634 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2635 return; 2636 } 2637 2638 /* check for reparse point at vp */ 2639 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2640 /* it's not all bad */ 2641 *cs->statusp = resp->status = NFS4ERR_MOVED; 2642 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2643 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2644 return; 2645 } 2646 2647 resp->object.nfs_fh4_val = 2648 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2649 nfs_fh4_copy(&cs->fh, &resp->object); 2650 *cs->statusp = resp->status = NFS4_OK; 2651 out: 2652 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2653 GETFH4res *, resp); 2654 } 2655 2656 static void 2657 rfs4_op_getfh_free(nfs_resop4 *resop) 2658 { 2659 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2660 2661 if (resp->status == NFS4_OK && 2662 resp->object.nfs_fh4_val != NULL) { 2663 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2664 resp->object.nfs_fh4_val = NULL; 2665 resp->object.nfs_fh4_len = 0; 2666 } 2667 } 2668 2669 /* 2670 * illegal: args: void 2671 * res : status (NFS4ERR_OP_ILLEGAL) 2672 */ 2673 /* ARGSUSED */ 2674 static void 2675 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2676 struct svc_req *req, struct compound_state *cs) 2677 { 2678 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2679 2680 resop->resop = OP_ILLEGAL; 2681 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2682 } 2683 2684 /* ARGSUSED */ 2685 static void 2686 rfs4_op_notsup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2687 struct compound_state *cs) 2688 { 2689 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_NOTSUPP; 2690 } 2691 2692 /* 2693 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2694 * res: status. If success - CURRENT_FH unchanged, return change_info 2695 */ 2696 /* ARGSUSED */ 2697 static void 2698 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2699 struct compound_state *cs) 2700 { 2701 LINK4args *args = &argop->nfs_argop4_u.oplink; 2702 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2703 int error; 2704 vnode_t *vp; 2705 vnode_t *dvp; 2706 struct vattr bdva, idva, adva; 2707 char *nm; 2708 uint_t len; 2709 struct sockaddr *ca; 2710 char *name = NULL; 2711 nfsstat4 status; 2712 2713 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2714 LINK4args *, args); 2715 2716 /* SAVED_FH: source object */ 2717 vp = cs->saved_vp; 2718 if (vp == NULL) { 2719 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2720 goto out; 2721 } 2722 2723 /* CURRENT_FH: target directory */ 2724 dvp = cs->vp; 2725 if (dvp == NULL) { 2726 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2727 goto out; 2728 } 2729 2730 /* 2731 * If there is a non-shared filesystem mounted on this vnode, 2732 * do not allow to link any file in this directory. 2733 */ 2734 if (vn_ismntpt(dvp)) { 2735 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2736 goto out; 2737 } 2738 2739 if (cs->access == CS_ACCESS_DENIED) { 2740 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2741 goto out; 2742 } 2743 2744 /* Check source object's type validity */ 2745 if (vp->v_type == VDIR) { 2746 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2747 goto out; 2748 } 2749 2750 /* Check target directory's type */ 2751 if (dvp->v_type != VDIR) { 2752 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2753 goto out; 2754 } 2755 2756 if (cs->saved_exi != cs->exi) { 2757 *cs->statusp = resp->status = NFS4ERR_XDEV; 2758 goto out; 2759 } 2760 2761 status = utf8_dir_verify(&args->newname); 2762 if (status != NFS4_OK) { 2763 *cs->statusp = resp->status = status; 2764 goto out; 2765 } 2766 2767 nm = utf8_to_fn(&args->newname, &len, NULL); 2768 if (nm == NULL) { 2769 *cs->statusp = resp->status = NFS4ERR_INVAL; 2770 goto out; 2771 } 2772 2773 if (len > MAXNAMELEN) { 2774 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2775 kmem_free(nm, len); 2776 goto out; 2777 } 2778 2779 if (rdonly4(req, cs)) { 2780 *cs->statusp = resp->status = NFS4ERR_ROFS; 2781 kmem_free(nm, len); 2782 goto out; 2783 } 2784 2785 /* Get "before" change value */ 2786 bdva.va_mask = AT_CTIME|AT_SEQ; 2787 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2788 if (error) { 2789 *cs->statusp = resp->status = puterrno4(error); 2790 kmem_free(nm, len); 2791 goto out; 2792 } 2793 2794 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2795 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2796 MAXPATHLEN + 1); 2797 2798 if (name == NULL) { 2799 *cs->statusp = resp->status = NFS4ERR_INVAL; 2800 kmem_free(nm, len); 2801 goto out; 2802 } 2803 2804 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2805 2806 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2807 2808 if (nm != name) 2809 kmem_free(name, MAXPATHLEN + 1); 2810 kmem_free(nm, len); 2811 2812 /* 2813 * Get the initial "after" sequence number, if it fails, set to zero 2814 */ 2815 idva.va_mask = AT_SEQ; 2816 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2817 idva.va_seq = 0; 2818 2819 /* 2820 * Force modified data and metadata out to stable storage. 2821 */ 2822 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2823 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2824 2825 if (error) { 2826 *cs->statusp = resp->status = puterrno4(error); 2827 goto out; 2828 } 2829 2830 /* 2831 * Get "after" change value, if it fails, simply return the 2832 * before value. 2833 */ 2834 adva.va_mask = AT_CTIME|AT_SEQ; 2835 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2836 adva.va_ctime = bdva.va_ctime; 2837 adva.va_seq = 0; 2838 } 2839 2840 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2841 2842 /* 2843 * The cinfo.atomic = TRUE only if we have 2844 * non-zero va_seq's, and it has incremented by exactly one 2845 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2846 */ 2847 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2848 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2849 resp->cinfo.atomic = TRUE; 2850 else 2851 resp->cinfo.atomic = FALSE; 2852 2853 *cs->statusp = resp->status = NFS4_OK; 2854 out: 2855 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2856 LINK4res *, resp); 2857 } 2858 2859 /* 2860 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2861 */ 2862 2863 /* ARGSUSED */ 2864 static nfsstat4 2865 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) 2866 { 2867 int error; 2868 int different_export = 0; 2869 vnode_t *vp, *pre_tvp = NULL, *oldvp = NULL; 2870 struct exportinfo *exi = NULL, *pre_exi = NULL; 2871 nfsstat4 stat; 2872 fid_t fid; 2873 int attrdir, dotdot, walk; 2874 bool_t is_newvp = FALSE; 2875 2876 if (cs->vp->v_flag & V_XATTRDIR) { 2877 attrdir = 1; 2878 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2879 } else { 2880 attrdir = 0; 2881 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2882 } 2883 2884 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2885 2886 /* 2887 * If dotdotting, then need to check whether it's 2888 * above the root of a filesystem, or above an 2889 * export point. 2890 */ 2891 if (dotdot) { 2892 vnode_t *zone_rootvp; 2893 2894 ASSERT(cs->exi != NULL); 2895 zone_rootvp = cs->exi->exi_ne->exi_root->exi_vp; 2896 /* 2897 * If dotdotting at the root of a filesystem, then 2898 * need to traverse back to the mounted-on filesystem 2899 * and do the dotdot lookup there. 2900 */ 2901 if ((cs->vp->v_flag & VROOT) || VN_CMP(cs->vp, zone_rootvp)) { 2902 2903 /* 2904 * If at the system root, then can 2905 * go up no further. 2906 */ 2907 if (VN_CMP(cs->vp, zone_rootvp)) 2908 return (puterrno4(ENOENT)); 2909 2910 /* 2911 * Traverse back to the mounted-on filesystem 2912 */ 2913 cs->vp = untraverse(cs->vp, zone_rootvp); 2914 2915 /* 2916 * Set the different_export flag so we remember 2917 * to pick up a new exportinfo entry for 2918 * this new filesystem. 2919 */ 2920 different_export = 1; 2921 } else { 2922 2923 /* 2924 * If dotdotting above an export point then set 2925 * the different_export to get new export info. 2926 */ 2927 different_export = nfs_exported(cs->exi, cs->vp); 2928 } 2929 } 2930 2931 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2932 NULL, NULL, NULL); 2933 if (error) 2934 return (puterrno4(error)); 2935 2936 /* 2937 * If the vnode is in a pseudo filesystem, check whether it is visible. 2938 * 2939 * XXX if the vnode is a symlink and it is not visible in 2940 * a pseudo filesystem, return ENOENT (not following symlink). 2941 * V4 client can not mount such symlink. This is a regression 2942 * from V2/V3. 2943 * 2944 * In the same exported filesystem, if the security flavor used 2945 * is not an explicitly shared flavor, limit the view to the visible 2946 * list entries only. This is not a WRONGSEC case because it's already 2947 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2948 */ 2949 if (!different_export && 2950 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2951 cs->access & CS_ACCESS_LIMITED)) { 2952 if (! nfs_visible(cs->exi, vp, &different_export)) { 2953 VN_RELE(vp); 2954 return (puterrno4(ENOENT)); 2955 } 2956 } 2957 2958 /* 2959 * If it's a mountpoint, then traverse it. 2960 */ 2961 if (vn_ismntpt(vp)) { 2962 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2963 pre_tvp = vp; /* save pre-traversed vnode */ 2964 2965 /* 2966 * hold pre_tvp to counteract rele by traverse. We will 2967 * need pre_tvp below if checkexport4 fails 2968 */ 2969 VN_HOLD(pre_tvp); 2970 if ((error = traverse(&vp)) != 0) { 2971 VN_RELE(vp); 2972 VN_RELE(pre_tvp); 2973 return (puterrno4(error)); 2974 } 2975 different_export = 1; 2976 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2977 /* 2978 * The vfsp comparison is to handle the case where 2979 * a LOFS mount is shared. lo_lookup traverses mount points, 2980 * and NFS is unaware of local fs transistions because 2981 * v_vfsmountedhere isn't set. For this special LOFS case, 2982 * the dir and the obj returned by lookup will have different 2983 * vfs ptrs. 2984 */ 2985 different_export = 1; 2986 } 2987 2988 if (different_export) { 2989 2990 bzero(&fid, sizeof (fid)); 2991 fid.fid_len = MAXFIDSZ; 2992 error = vop_fid_pseudo(vp, &fid); 2993 if (error) { 2994 VN_RELE(vp); 2995 if (pre_tvp) 2996 VN_RELE(pre_tvp); 2997 return (puterrno4(error)); 2998 } 2999 3000 if (dotdot) 3001 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 3002 else 3003 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 3004 3005 if (exi == NULL) { 3006 if (pre_tvp) { 3007 /* 3008 * If this vnode is a mounted-on vnode, 3009 * but the mounted-on file system is not 3010 * exported, send back the filehandle for 3011 * the mounted-on vnode, not the root of 3012 * the mounted-on file system. 3013 */ 3014 VN_RELE(vp); 3015 vp = pre_tvp; 3016 exi = pre_exi; 3017 } else { 3018 VN_RELE(vp); 3019 return (puterrno4(EACCES)); 3020 } 3021 } else if (pre_tvp) { 3022 /* we're done with pre_tvp now. release extra hold */ 3023 VN_RELE(pre_tvp); 3024 } 3025 3026 cs->exi = exi; 3027 3028 /* 3029 * Now we do a checkauth4. The reason is that 3030 * this client/user may not have access to the new 3031 * exported file system, and if they do, 3032 * the client/user may be mapped to a different uid. 3033 * 3034 * We start with a new cr, because the checkauth4 done 3035 * in the PUT*FH operation over wrote the cred's uid, 3036 * gid, etc, and we want the real thing before calling 3037 * checkauth4() 3038 */ 3039 crfree(cs->cr); 3040 cs->cr = crdup(cs->basecr); 3041 3042 oldvp = cs->vp; 3043 cs->vp = vp; 3044 is_newvp = TRUE; 3045 3046 stat = call_checkauth4(cs, req); 3047 if (stat != NFS4_OK) { 3048 VN_RELE(cs->vp); 3049 cs->vp = oldvp; 3050 return (stat); 3051 } 3052 } 3053 3054 /* 3055 * After various NFS checks, do a label check on the path 3056 * component. The label on this path should either be the 3057 * global zone's label or a zone's label. We are only 3058 * interested in the zone's label because exported files 3059 * in global zone is accessible (though read-only) to 3060 * clients. The exportability/visibility check is already 3061 * done before reaching this code. 3062 */ 3063 if (is_system_labeled()) { 3064 bslabel_t *clabel; 3065 3066 ASSERT(req->rq_label != NULL); 3067 clabel = req->rq_label; 3068 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 3069 "got client label from request(1)", struct svc_req *, req); 3070 3071 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3072 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3073 cs->exi)) { 3074 error = EACCES; 3075 goto err_out; 3076 } 3077 } else { 3078 /* 3079 * We grant access to admin_low label clients 3080 * only if the client is trusted, i.e. also 3081 * running Solaris Trusted Extension. 3082 */ 3083 struct sockaddr *ca; 3084 int addr_type; 3085 void *ipaddr; 3086 tsol_tpc_t *tp; 3087 3088 ca = (struct sockaddr *)svc_getrpccaller( 3089 req->rq_xprt)->buf; 3090 if (ca->sa_family == AF_INET) { 3091 addr_type = IPV4_VERSION; 3092 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 3093 } else if (ca->sa_family == AF_INET6) { 3094 addr_type = IPV6_VERSION; 3095 ipaddr = &((struct sockaddr_in6 *) 3096 ca)->sin6_addr; 3097 } 3098 tp = find_tpc(ipaddr, addr_type, B_FALSE); 3099 if (tp == NULL || tp->tpc_tp.tp_doi != 3100 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 3101 SUN_CIPSO) { 3102 if (tp != NULL) 3103 TPC_RELE(tp); 3104 error = EACCES; 3105 goto err_out; 3106 } 3107 TPC_RELE(tp); 3108 } 3109 } 3110 3111 error = makefh4(&cs->fh, vp, cs->exi); 3112 3113 err_out: 3114 if (error) { 3115 if (is_newvp) { 3116 VN_RELE(cs->vp); 3117 cs->vp = oldvp; 3118 } else 3119 VN_RELE(vp); 3120 return (puterrno4(error)); 3121 } 3122 3123 if (!is_newvp) { 3124 if (cs->vp) 3125 VN_RELE(cs->vp); 3126 cs->vp = vp; 3127 } else if (oldvp) 3128 VN_RELE(oldvp); 3129 3130 /* 3131 * if did lookup on attrdir and didn't lookup .., set named 3132 * attr fh flag 3133 */ 3134 if (attrdir && ! dotdot) 3135 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 3136 3137 /* Assume false for now, open proc will set this */ 3138 cs->mandlock = FALSE; 3139 3140 return (NFS4_OK); 3141 } 3142 3143 /* ARGSUSED */ 3144 static void 3145 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3146 struct compound_state *cs) 3147 { 3148 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 3149 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 3150 char *nm; 3151 uint_t len; 3152 struct sockaddr *ca; 3153 char *name = NULL; 3154 nfsstat4 status; 3155 3156 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 3157 LOOKUP4args *, args); 3158 3159 if (cs->vp == NULL) { 3160 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3161 goto out; 3162 } 3163 3164 if (cs->vp->v_type == VLNK) { 3165 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 3166 goto out; 3167 } 3168 3169 if (cs->vp->v_type != VDIR) { 3170 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3171 goto out; 3172 } 3173 3174 status = utf8_dir_verify(&args->objname); 3175 if (status != NFS4_OK) { 3176 *cs->statusp = resp->status = status; 3177 goto out; 3178 } 3179 3180 nm = utf8_to_str(&args->objname, &len, NULL); 3181 if (nm == NULL) { 3182 *cs->statusp = resp->status = NFS4ERR_INVAL; 3183 goto out; 3184 } 3185 3186 if (len > MAXNAMELEN) { 3187 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 3188 kmem_free(nm, len); 3189 goto out; 3190 } 3191 3192 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3193 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 3194 MAXPATHLEN + 1); 3195 3196 if (name == NULL) { 3197 *cs->statusp = resp->status = NFS4ERR_INVAL; 3198 kmem_free(nm, len); 3199 goto out; 3200 } 3201 3202 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 3203 3204 if (name != nm) 3205 kmem_free(name, MAXPATHLEN + 1); 3206 kmem_free(nm, len); 3207 3208 out: 3209 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 3210 LOOKUP4res *, resp); 3211 } 3212 3213 /* ARGSUSED */ 3214 static void 3215 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3216 struct compound_state *cs) 3217 { 3218 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 3219 3220 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 3221 3222 if (cs->vp == NULL) { 3223 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3224 goto out; 3225 } 3226 3227 if (cs->vp->v_type == VLNK) { 3228 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 3229 goto out; 3230 } 3231 3232 if (cs->vp->v_type != VDIR) { 3233 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3234 goto out; 3235 } 3236 3237 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 3238 3239 /* 3240 * From NFSV4 Specification, LOOKUPP should not check for 3241 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 3242 */ 3243 if (resp->status == NFS4ERR_WRONGSEC) { 3244 *cs->statusp = resp->status = NFS4_OK; 3245 } 3246 3247 out: 3248 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 3249 LOOKUPP4res *, resp); 3250 } 3251 3252 3253 /*ARGSUSED2*/ 3254 static void 3255 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3256 struct compound_state *cs) 3257 { 3258 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 3259 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 3260 vnode_t *avp = NULL; 3261 int lookup_flags = LOOKUP_XATTR, error; 3262 int exp_ro = 0; 3263 3264 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 3265 OPENATTR4args *, args); 3266 3267 if (cs->vp == NULL) { 3268 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3269 goto out; 3270 } 3271 3272 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3273 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3274 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3275 goto out; 3276 } 3277 3278 /* 3279 * If file system supports passing ACE mask to VOP_ACCESS then 3280 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3281 */ 3282 3283 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3284 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3285 V_ACE_MASK, cs->cr, NULL); 3286 else 3287 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3288 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3289 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3290 3291 if (error) { 3292 *cs->statusp = resp->status = puterrno4(EACCES); 3293 goto out; 3294 } 3295 3296 /* 3297 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3298 * the file system is exported read-only -- regardless of 3299 * createdir flag. Otherwise the attrdir would be created 3300 * (assuming server fs isn't mounted readonly locally). If 3301 * VOP_LOOKUP returns ENOENT in this case, the error will 3302 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3303 * because specfs has no VOP_LOOKUP op, so the macro would 3304 * return ENOSYS. EINVAL is returned by all (current) 3305 * Solaris file system implementations when any of their 3306 * restrictions are violated (xattr(dir) can't have xattrdir). 3307 * Returning NOTSUPP is more appropriate in this case 3308 * because the object will never be able to have an attrdir. 3309 */ 3310 if (args->createdir && ! (exp_ro = rdonly4(req, cs))) 3311 lookup_flags |= CREATE_XATTR_DIR; 3312 3313 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3314 NULL, NULL, NULL); 3315 3316 if (error) { 3317 if (error == ENOENT && args->createdir && exp_ro) 3318 *cs->statusp = resp->status = puterrno4(EROFS); 3319 else if (error == EINVAL || error == ENOSYS) 3320 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3321 else 3322 *cs->statusp = resp->status = puterrno4(error); 3323 goto out; 3324 } 3325 3326 ASSERT(avp->v_flag & V_XATTRDIR); 3327 3328 error = makefh4(&cs->fh, avp, cs->exi); 3329 3330 if (error) { 3331 VN_RELE(avp); 3332 *cs->statusp = resp->status = puterrno4(error); 3333 goto out; 3334 } 3335 3336 VN_RELE(cs->vp); 3337 cs->vp = avp; 3338 3339 /* 3340 * There is no requirement for an attrdir fh flag 3341 * because the attrdir has a vnode flag to distinguish 3342 * it from regular (non-xattr) directories. The 3343 * FH4_ATTRDIR flag is set for future sanity checks. 3344 */ 3345 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3346 *cs->statusp = resp->status = NFS4_OK; 3347 3348 out: 3349 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3350 OPENATTR4res *, resp); 3351 } 3352 3353 static int 3354 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3355 caller_context_t *ct) 3356 { 3357 int error; 3358 int i; 3359 clock_t delaytime; 3360 3361 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3362 3363 /* 3364 * Don't block on mandatory locks. If this routine returns 3365 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3366 */ 3367 uio->uio_fmode = FNONBLOCK; 3368 3369 for (i = 0; i < rfs4_maxlock_tries; i++) { 3370 3371 3372 if (direction == FREAD) { 3373 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3374 error = VOP_READ(vp, uio, ioflag, cred, ct); 3375 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3376 } else { 3377 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3378 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3379 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3380 } 3381 3382 if (error != EAGAIN) 3383 break; 3384 3385 if (i < rfs4_maxlock_tries - 1) { 3386 delay(delaytime); 3387 delaytime *= 2; 3388 } 3389 } 3390 3391 return (error); 3392 } 3393 3394 /* ARGSUSED */ 3395 static void 3396 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3397 struct compound_state *cs) 3398 { 3399 READ4args *args = &argop->nfs_argop4_u.opread; 3400 READ4res *resp = &resop->nfs_resop4_u.opread; 3401 int error; 3402 int verror; 3403 vnode_t *vp; 3404 struct vattr va; 3405 struct iovec iov, *iovp = NULL; 3406 int iovcnt; 3407 struct uio uio; 3408 u_offset_t offset; 3409 bool_t *deleg = &cs->deleg; 3410 nfsstat4 stat; 3411 int in_crit = 0; 3412 mblk_t *mp = NULL; 3413 int alloc_err = 0; 3414 int rdma_used = 0; 3415 int loaned_buffers; 3416 caller_context_t ct; 3417 struct uio *uiop; 3418 3419 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3420 READ4args, args); 3421 3422 vp = cs->vp; 3423 if (vp == NULL) { 3424 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3425 goto out; 3426 } 3427 if (cs->access == CS_ACCESS_DENIED) { 3428 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3429 goto out; 3430 } 3431 3432 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3433 deleg, TRUE, &ct, cs)) != NFS4_OK) { 3434 *cs->statusp = resp->status = stat; 3435 goto out; 3436 } 3437 3438 /* 3439 * Enter the critical region before calling VOP_RWLOCK 3440 * to avoid a deadlock with write requests. 3441 */ 3442 if (nbl_need_check(vp)) { 3443 nbl_start_crit(vp, RW_READER); 3444 in_crit = 1; 3445 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3446 &ct)) { 3447 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3448 goto out; 3449 } 3450 } 3451 3452 if (args->wlist) { 3453 if (args->count > clist_len(args->wlist)) { 3454 *cs->statusp = resp->status = NFS4ERR_INVAL; 3455 goto out; 3456 } 3457 rdma_used = 1; 3458 } 3459 3460 /* use loaned buffers for TCP */ 3461 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3462 3463 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3464 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3465 3466 /* 3467 * If we can't get the attributes, then we can't do the 3468 * right access checking. So, we'll fail the request. 3469 */ 3470 if (verror) { 3471 *cs->statusp = resp->status = puterrno4(verror); 3472 goto out; 3473 } 3474 3475 if (vp->v_type != VREG) { 3476 *cs->statusp = resp->status = 3477 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3478 goto out; 3479 } 3480 3481 if (crgetuid(cs->cr) != va.va_uid && 3482 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3483 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3484 *cs->statusp = resp->status = puterrno4(error); 3485 goto out; 3486 } 3487 3488 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3489 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3490 goto out; 3491 } 3492 3493 offset = args->offset; 3494 if (offset >= va.va_size) { 3495 *cs->statusp = resp->status = NFS4_OK; 3496 resp->eof = TRUE; 3497 resp->data_len = 0; 3498 resp->data_val = NULL; 3499 resp->mblk = NULL; 3500 /* RDMA */ 3501 resp->wlist = args->wlist; 3502 resp->wlist_len = resp->data_len; 3503 *cs->statusp = resp->status = NFS4_OK; 3504 if (resp->wlist) 3505 clist_zero_len(resp->wlist); 3506 goto out; 3507 } 3508 3509 if (args->count == 0) { 3510 *cs->statusp = resp->status = NFS4_OK; 3511 resp->eof = FALSE; 3512 resp->data_len = 0; 3513 resp->data_val = NULL; 3514 resp->mblk = NULL; 3515 /* RDMA */ 3516 resp->wlist = args->wlist; 3517 resp->wlist_len = resp->data_len; 3518 if (resp->wlist) 3519 clist_zero_len(resp->wlist); 3520 goto out; 3521 } 3522 3523 /* 3524 * Do not allocate memory more than maximum allowed 3525 * transfer size 3526 */ 3527 if (args->count > rfs4_tsize(req)) 3528 args->count = rfs4_tsize(req); 3529 3530 if (loaned_buffers) { 3531 uiop = (uio_t *)rfs_setup_xuio(vp); 3532 ASSERT(uiop != NULL); 3533 uiop->uio_segflg = UIO_SYSSPACE; 3534 uiop->uio_loffset = args->offset; 3535 uiop->uio_resid = args->count; 3536 3537 /* Jump to do the read if successful */ 3538 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3539 /* 3540 * Need to hold the vnode until after VOP_RETZCBUF() 3541 * is called. 3542 */ 3543 VN_HOLD(vp); 3544 goto doio_read; 3545 } 3546 3547 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3548 uiop->uio_loffset, int, uiop->uio_resid); 3549 3550 uiop->uio_extflg = 0; 3551 3552 /* failure to setup for zero copy */ 3553 rfs_free_xuio((void *)uiop); 3554 loaned_buffers = 0; 3555 } 3556 3557 /* 3558 * If returning data via RDMA Write, then grab the chunk list. If we 3559 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3560 */ 3561 if (rdma_used) { 3562 mp = NULL; 3563 (void) rdma_get_wchunk(req, &iov, args->wlist); 3564 uio.uio_iov = &iov; 3565 uio.uio_iovcnt = 1; 3566 } else { 3567 /* 3568 * mp will contain the data to be sent out in the read reply. 3569 * It will be freed after the reply has been sent. 3570 */ 3571 mp = rfs_read_alloc(args->count, &iovp, &iovcnt); 3572 ASSERT(mp != NULL); 3573 ASSERT(alloc_err == 0); 3574 uio.uio_iov = iovp; 3575 uio.uio_iovcnt = iovcnt; 3576 } 3577 3578 uio.uio_segflg = UIO_SYSSPACE; 3579 uio.uio_extflg = UIO_COPY_CACHED; 3580 uio.uio_loffset = args->offset; 3581 uio.uio_resid = args->count; 3582 uiop = &uio; 3583 3584 doio_read: 3585 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3586 3587 va.va_mask = AT_SIZE; 3588 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3589 3590 if (error) { 3591 if (mp) 3592 freemsg(mp); 3593 *cs->statusp = resp->status = puterrno4(error); 3594 goto out; 3595 } 3596 3597 /* make mblk using zc buffers */ 3598 if (loaned_buffers) { 3599 mp = uio_to_mblk(uiop); 3600 ASSERT(mp != NULL); 3601 } 3602 3603 *cs->statusp = resp->status = NFS4_OK; 3604 3605 ASSERT(uiop->uio_resid >= 0); 3606 resp->data_len = args->count - uiop->uio_resid; 3607 if (mp) { 3608 resp->data_val = (char *)mp->b_datap->db_base; 3609 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3610 } else { 3611 resp->data_val = (caddr_t)iov.iov_base; 3612 } 3613 3614 resp->mblk = mp; 3615 3616 if (!verror && offset + resp->data_len == va.va_size) 3617 resp->eof = TRUE; 3618 else 3619 resp->eof = FALSE; 3620 3621 if (rdma_used) { 3622 if (!rdma_setup_read_data4(args, resp)) { 3623 *cs->statusp = resp->status = NFS4ERR_INVAL; 3624 } 3625 } else { 3626 resp->wlist = NULL; 3627 } 3628 3629 out: 3630 if (in_crit) 3631 nbl_end_crit(vp); 3632 3633 if (iovp != NULL) 3634 kmem_free(iovp, iovcnt * sizeof (struct iovec)); 3635 3636 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3637 READ4res *, resp); 3638 } 3639 3640 static void 3641 rfs4_op_read_free(nfs_resop4 *resop) 3642 { 3643 READ4res *resp = &resop->nfs_resop4_u.opread; 3644 3645 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3646 freemsg(resp->mblk); 3647 resp->mblk = NULL; 3648 resp->data_val = NULL; 3649 resp->data_len = 0; 3650 } 3651 } 3652 3653 static void 3654 rfs4_op_readdir_free(nfs_resop4 * resop) 3655 { 3656 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3657 3658 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3659 freeb(resp->mblk); 3660 resp->mblk = NULL; 3661 resp->data_len = 0; 3662 } 3663 } 3664 3665 3666 /* ARGSUSED */ 3667 static void 3668 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3669 struct compound_state *cs) 3670 { 3671 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3672 int error; 3673 vnode_t *vp; 3674 struct exportinfo *exi, *sav_exi; 3675 nfs_fh4_fmt_t *fh_fmtp; 3676 nfs_export_t *ne = nfs_get_export(); 3677 3678 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3679 3680 if (cs->vp) { 3681 VN_RELE(cs->vp); 3682 cs->vp = NULL; 3683 } 3684 3685 if (cs->cr) 3686 crfree(cs->cr); 3687 3688 cs->cr = crdup(cs->basecr); 3689 3690 vp = ne->exi_public->exi_vp; 3691 if (vp == NULL) { 3692 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3693 goto out; 3694 } 3695 3696 error = makefh4(&cs->fh, vp, ne->exi_public); 3697 if (error != 0) { 3698 *cs->statusp = resp->status = puterrno4(error); 3699 goto out; 3700 } 3701 sav_exi = cs->exi; 3702 if (ne->exi_public == ne->exi_root) { 3703 /* 3704 * No filesystem is actually shared public, so we default 3705 * to exi_root. In this case, we must check whether root 3706 * is exported. 3707 */ 3708 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3709 3710 /* 3711 * if root filesystem is exported, the exportinfo struct that we 3712 * should use is what checkexport4 returns, because root_exi is 3713 * actually a mostly empty struct. 3714 */ 3715 exi = checkexport4(&fh_fmtp->fh4_fsid, 3716 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3717 cs->exi = ((exi != NULL) ? exi : ne->exi_public); 3718 } else { 3719 /* 3720 * it's a properly shared filesystem 3721 */ 3722 cs->exi = ne->exi_public; 3723 } 3724 3725 if (is_system_labeled()) { 3726 bslabel_t *clabel; 3727 3728 ASSERT(req->rq_label != NULL); 3729 clabel = req->rq_label; 3730 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3731 "got client label from request(1)", 3732 struct svc_req *, req); 3733 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3734 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3735 cs->exi)) { 3736 *cs->statusp = resp->status = 3737 NFS4ERR_SERVERFAULT; 3738 goto out; 3739 } 3740 } 3741 } 3742 3743 VN_HOLD(vp); 3744 cs->vp = vp; 3745 3746 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3747 VN_RELE(cs->vp); 3748 cs->vp = NULL; 3749 cs->exi = sav_exi; 3750 goto out; 3751 } 3752 3753 *cs->statusp = resp->status = NFS4_OK; 3754 out: 3755 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3756 PUTPUBFH4res *, resp); 3757 } 3758 3759 /* 3760 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3761 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3762 * or joe have restrictive search permissions, then we shouldn't let 3763 * the client get a file handle. This is easy to enforce. However, we 3764 * don't know what security flavor should be used until we resolve the 3765 * path name. Another complication is uid mapping. If root is 3766 * the user, then it will be mapped to the anonymous user by default, 3767 * but we won't know that till we've resolved the path name. And we won't 3768 * know what the anonymous user is. 3769 * Luckily, SECINFO is specified to take a full filename. 3770 * So what we will have to in rfs4_op_lookup is check that flavor of 3771 * the target object matches that of the request, and if root was the 3772 * caller, check for the root= and anon= options, and if necessary, 3773 * repeat the lookup using the right cred_t. But that's not done yet. 3774 */ 3775 /* ARGSUSED */ 3776 static void 3777 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3778 struct compound_state *cs) 3779 { 3780 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3781 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3782 nfs_fh4_fmt_t *fh_fmtp; 3783 3784 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3785 PUTFH4args *, args); 3786 3787 if (cs->vp) { 3788 VN_RELE(cs->vp); 3789 cs->vp = NULL; 3790 } 3791 3792 if (cs->cr) { 3793 crfree(cs->cr); 3794 cs->cr = NULL; 3795 } 3796 3797 3798 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3799 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3800 goto out; 3801 } 3802 3803 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3804 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3805 NULL); 3806 3807 if (cs->exi == NULL) { 3808 *cs->statusp = resp->status = NFS4ERR_STALE; 3809 goto out; 3810 } 3811 3812 cs->cr = crdup(cs->basecr); 3813 3814 ASSERT(cs->cr != NULL); 3815 3816 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3817 *cs->statusp = resp->status; 3818 goto out; 3819 } 3820 3821 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3822 VN_RELE(cs->vp); 3823 cs->vp = NULL; 3824 goto out; 3825 } 3826 3827 nfs_fh4_copy(&args->object, &cs->fh); 3828 *cs->statusp = resp->status = NFS4_OK; 3829 cs->deleg = FALSE; 3830 3831 out: 3832 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3833 PUTFH4res *, resp); 3834 } 3835 3836 /* ARGSUSED */ 3837 static void 3838 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3839 struct compound_state *cs) 3840 { 3841 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3842 int error; 3843 fid_t fid; 3844 struct exportinfo *exi, *sav_exi; 3845 3846 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3847 3848 if (cs->vp) { 3849 VN_RELE(cs->vp); 3850 cs->vp = NULL; 3851 } 3852 3853 if (cs->cr) 3854 crfree(cs->cr); 3855 3856 cs->cr = crdup(cs->basecr); 3857 3858 /* 3859 * Using rootdir, the system root vnode, 3860 * get its fid. 3861 */ 3862 bzero(&fid, sizeof (fid)); 3863 fid.fid_len = MAXFIDSZ; 3864 error = vop_fid_pseudo(ZONE_ROOTVP(), &fid); 3865 if (error != 0) { 3866 *cs->statusp = resp->status = puterrno4(error); 3867 goto out; 3868 } 3869 3870 /* 3871 * Then use the root fsid & fid it to find out if it's exported 3872 * 3873 * If the server root isn't exported directly, then 3874 * it should at least be a pseudo export based on 3875 * one or more exports further down in the server's 3876 * file tree. 3877 */ 3878 exi = checkexport4(&ZONE_ROOTVP()->v_vfsp->vfs_fsid, &fid, NULL); 3879 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3880 NFS4_DEBUG(rfs4_debug, 3881 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3882 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3883 goto out; 3884 } 3885 3886 /* 3887 * Now make a filehandle based on the root 3888 * export and root vnode. 3889 */ 3890 error = makefh4(&cs->fh, ZONE_ROOTVP(), exi); 3891 if (error != 0) { 3892 *cs->statusp = resp->status = puterrno4(error); 3893 goto out; 3894 } 3895 3896 sav_exi = cs->exi; 3897 cs->exi = exi; 3898 3899 VN_HOLD(ZONE_ROOTVP()); 3900 cs->vp = ZONE_ROOTVP(); 3901 3902 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3903 VN_RELE(cs->vp); 3904 cs->vp = NULL; 3905 cs->exi = sav_exi; 3906 goto out; 3907 } 3908 3909 *cs->statusp = resp->status = NFS4_OK; 3910 cs->deleg = FALSE; 3911 out: 3912 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3913 PUTROOTFH4res *, resp); 3914 } 3915 3916 /* 3917 * readlink: args: CURRENT_FH. 3918 * res: status. If success - CURRENT_FH unchanged, return linktext. 3919 */ 3920 3921 /* ARGSUSED */ 3922 static void 3923 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3924 struct compound_state *cs) 3925 { 3926 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3927 int error; 3928 vnode_t *vp; 3929 struct iovec iov; 3930 struct vattr va; 3931 struct uio uio; 3932 char *data; 3933 struct sockaddr *ca; 3934 char *name = NULL; 3935 int is_referral; 3936 3937 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3938 3939 /* CURRENT_FH: directory */ 3940 vp = cs->vp; 3941 if (vp == NULL) { 3942 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3943 goto out; 3944 } 3945 3946 if (cs->access == CS_ACCESS_DENIED) { 3947 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3948 goto out; 3949 } 3950 3951 /* Is it a referral? */ 3952 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3953 3954 is_referral = 1; 3955 3956 } else { 3957 3958 is_referral = 0; 3959 3960 if (vp->v_type == VDIR) { 3961 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3962 goto out; 3963 } 3964 3965 if (vp->v_type != VLNK) { 3966 *cs->statusp = resp->status = NFS4ERR_INVAL; 3967 goto out; 3968 } 3969 3970 } 3971 3972 va.va_mask = AT_MODE; 3973 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3974 if (error) { 3975 *cs->statusp = resp->status = puterrno4(error); 3976 goto out; 3977 } 3978 3979 if (MANDLOCK(vp, va.va_mode)) { 3980 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3981 goto out; 3982 } 3983 3984 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3985 3986 if (is_referral) { 3987 char *s; 3988 size_t strsz; 3989 kstat_named_t *stat = 3990 cs->exi->exi_ne->ne_globals->svstat[NFS_V4]; 3991 3992 /* Get an artificial symlink based on a referral */ 3993 s = build_symlink(vp, cs->cr, &strsz); 3994 stat[NFS_REFERLINKS].value.ui64++; 3995 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3996 vnode_t *, vp, char *, s); 3997 if (s == NULL) 3998 error = EINVAL; 3999 else { 4000 error = 0; 4001 (void) strlcpy(data, s, MAXPATHLEN + 1); 4002 kmem_free(s, strsz); 4003 } 4004 4005 } else { 4006 4007 iov.iov_base = data; 4008 iov.iov_len = MAXPATHLEN; 4009 uio.uio_iov = &iov; 4010 uio.uio_iovcnt = 1; 4011 uio.uio_segflg = UIO_SYSSPACE; 4012 uio.uio_extflg = UIO_COPY_CACHED; 4013 uio.uio_loffset = 0; 4014 uio.uio_resid = MAXPATHLEN; 4015 4016 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 4017 4018 if (!error) 4019 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 4020 } 4021 4022 if (error) { 4023 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 4024 *cs->statusp = resp->status = puterrno4(error); 4025 goto out; 4026 } 4027 4028 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4029 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 4030 MAXPATHLEN + 1); 4031 4032 if (name == NULL) { 4033 /* 4034 * Even though the conversion failed, we return 4035 * something. We just don't translate it. 4036 */ 4037 name = data; 4038 } 4039 4040 /* 4041 * treat link name as data 4042 */ 4043 (void) str_to_utf8(name, (utf8string *)&resp->link); 4044 4045 if (name != data) 4046 kmem_free(name, MAXPATHLEN + 1); 4047 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 4048 *cs->statusp = resp->status = NFS4_OK; 4049 4050 out: 4051 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 4052 READLINK4res *, resp); 4053 } 4054 4055 static void 4056 rfs4_op_readlink_free(nfs_resop4 *resop) 4057 { 4058 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 4059 utf8string *symlink = (utf8string *)&resp->link; 4060 4061 if (symlink->utf8string_val) { 4062 UTF8STRING_FREE(*symlink) 4063 } 4064 } 4065 4066 /* 4067 * release_lockowner: 4068 * Release any state associated with the supplied 4069 * lockowner. Note if any lo_state is holding locks we will not 4070 * rele that lo_state and thus the lockowner will not be destroyed. 4071 * A client using lock after the lock owner stateid has been released 4072 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 4073 * to reissue the lock with new_lock_owner set to TRUE. 4074 * args: lock_owner 4075 * res: status 4076 */ 4077 /* ARGSUSED */ 4078 static void 4079 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 4080 struct svc_req *req, struct compound_state *cs) 4081 { 4082 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 4083 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 4084 rfs4_lockowner_t *lo; 4085 rfs4_openowner_t *oo; 4086 rfs4_state_t *sp; 4087 rfs4_lo_state_t *lsp; 4088 rfs4_client_t *cp; 4089 bool_t create = FALSE; 4090 locklist_t *llist; 4091 sysid_t sysid; 4092 4093 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 4094 cs, RELEASE_LOCKOWNER4args *, ap); 4095 4096 /* Make sure there is a clientid around for this request */ 4097 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 4098 4099 if (cp == NULL) { 4100 *cs->statusp = resp->status = 4101 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 4102 goto out; 4103 } 4104 rfs4_client_rele(cp); 4105 4106 lo = rfs4_findlockowner(&ap->lock_owner, &create); 4107 if (lo == NULL) { 4108 *cs->statusp = resp->status = NFS4_OK; 4109 goto out; 4110 } 4111 ASSERT(lo->rl_client != NULL); 4112 4113 /* 4114 * Check for EXPIRED client. If so will reap state with in a lease 4115 * period or on next set_clientid_confirm step 4116 */ 4117 if (rfs4_lease_expired(lo->rl_client)) { 4118 rfs4_lockowner_rele(lo); 4119 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4120 goto out; 4121 } 4122 4123 /* 4124 * If no sysid has been assigned, then no locks exist; just return. 4125 */ 4126 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4127 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 4128 rfs4_lockowner_rele(lo); 4129 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4130 goto out; 4131 } 4132 4133 sysid = lo->rl_client->rc_sysidt; 4134 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4135 4136 /* 4137 * Mark the lockowner invalid. 4138 */ 4139 rfs4_dbe_hide(lo->rl_dbe); 4140 4141 /* 4142 * sysid-pid pair should now not be used since the lockowner is 4143 * invalid. If the client were to instantiate the lockowner again 4144 * it would be assigned a new pid. Thus we can get the list of 4145 * current locks. 4146 */ 4147 4148 llist = flk_get_active_locks(sysid, lo->rl_pid); 4149 /* If we are still holding locks fail */ 4150 if (llist != NULL) { 4151 4152 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 4153 4154 flk_free_locklist(llist); 4155 /* 4156 * We need to unhide the lockowner so the client can 4157 * try it again. The bad thing here is if the client 4158 * has a logic error that took it here in the first place 4159 * they probably have lost accounting of the locks that it 4160 * is holding. So we may have dangling state until the 4161 * open owner state is reaped via close. One scenario 4162 * that could possibly occur is that the client has 4163 * sent the unlock request(s) in separate threads 4164 * and has not waited for the replies before sending the 4165 * RELEASE_LOCKOWNER request. Presumably, it would expect 4166 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 4167 * reissuing the request. 4168 */ 4169 rfs4_dbe_unhide(lo->rl_dbe); 4170 rfs4_lockowner_rele(lo); 4171 goto out; 4172 } 4173 4174 /* 4175 * For the corresponding client we need to check each open 4176 * owner for any opens that have lockowner state associated 4177 * with this lockowner. 4178 */ 4179 4180 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4181 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 4182 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 4183 4184 rfs4_dbe_lock(oo->ro_dbe); 4185 for (sp = list_head(&oo->ro_statelist); sp != NULL; 4186 sp = list_next(&oo->ro_statelist, sp)) { 4187 4188 rfs4_dbe_lock(sp->rs_dbe); 4189 for (lsp = list_head(&sp->rs_lostatelist); 4190 lsp != NULL; 4191 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4192 if (lsp->rls_locker == lo) { 4193 rfs4_dbe_lock(lsp->rls_dbe); 4194 rfs4_dbe_invalidate(lsp->rls_dbe); 4195 rfs4_dbe_unlock(lsp->rls_dbe); 4196 } 4197 } 4198 rfs4_dbe_unlock(sp->rs_dbe); 4199 } 4200 rfs4_dbe_unlock(oo->ro_dbe); 4201 } 4202 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4203 4204 rfs4_lockowner_rele(lo); 4205 4206 *cs->statusp = resp->status = NFS4_OK; 4207 4208 out: 4209 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4210 cs, RELEASE_LOCKOWNER4res *, resp); 4211 } 4212 4213 /* 4214 * short utility function to lookup a file and recall the delegation 4215 */ 4216 static rfs4_file_t * 4217 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4218 int *lkup_error, cred_t *cr) 4219 { 4220 vnode_t *vp; 4221 rfs4_file_t *fp = NULL; 4222 bool_t fcreate = FALSE; 4223 int error; 4224 4225 if (vpp) 4226 *vpp = NULL; 4227 4228 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4229 NULL)) == 0) { 4230 if (vp->v_type == VREG) 4231 fp = rfs4_findfile(vp, NULL, &fcreate); 4232 if (vpp) 4233 *vpp = vp; 4234 else 4235 VN_RELE(vp); 4236 } 4237 4238 if (lkup_error) 4239 *lkup_error = error; 4240 4241 return (fp); 4242 } 4243 4244 /* 4245 * remove: args: CURRENT_FH: directory; name. 4246 * res: status. If success - CURRENT_FH unchanged, return change_info 4247 * for directory. 4248 */ 4249 /* ARGSUSED */ 4250 static void 4251 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4252 struct compound_state *cs) 4253 { 4254 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4255 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4256 int error; 4257 vnode_t *dvp, *vp; 4258 struct vattr bdva, idva, adva; 4259 char *nm; 4260 uint_t len; 4261 rfs4_file_t *fp; 4262 int in_crit = 0; 4263 bslabel_t *clabel; 4264 struct sockaddr *ca; 4265 char *name = NULL; 4266 nfsstat4 status; 4267 4268 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4269 REMOVE4args *, args); 4270 4271 /* CURRENT_FH: directory */ 4272 dvp = cs->vp; 4273 if (dvp == NULL) { 4274 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4275 goto out; 4276 } 4277 4278 if (cs->access == CS_ACCESS_DENIED) { 4279 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4280 goto out; 4281 } 4282 4283 /* 4284 * If there is an unshared filesystem mounted on this vnode, 4285 * Do not allow to remove anything in this directory. 4286 */ 4287 if (vn_ismntpt(dvp)) { 4288 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4289 goto out; 4290 } 4291 4292 if (dvp->v_type != VDIR) { 4293 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4294 goto out; 4295 } 4296 4297 status = utf8_dir_verify(&args->target); 4298 if (status != NFS4_OK) { 4299 *cs->statusp = resp->status = status; 4300 goto out; 4301 } 4302 4303 /* 4304 * Lookup the file so that we can check if it's a directory 4305 */ 4306 nm = utf8_to_fn(&args->target, &len, NULL); 4307 if (nm == NULL) { 4308 *cs->statusp = resp->status = NFS4ERR_INVAL; 4309 goto out; 4310 } 4311 4312 if (len > MAXNAMELEN) { 4313 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4314 kmem_free(nm, len); 4315 goto out; 4316 } 4317 4318 if (rdonly4(req, cs)) { 4319 *cs->statusp = resp->status = NFS4ERR_ROFS; 4320 kmem_free(nm, len); 4321 goto out; 4322 } 4323 4324 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4325 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4326 MAXPATHLEN + 1); 4327 4328 if (name == NULL) { 4329 *cs->statusp = resp->status = NFS4ERR_INVAL; 4330 kmem_free(nm, len); 4331 goto out; 4332 } 4333 4334 /* 4335 * Lookup the file to determine type and while we are see if 4336 * there is a file struct around and check for delegation. 4337 * We don't need to acquire va_seq before this lookup, if 4338 * it causes an update, cinfo.before will not match, which will 4339 * trigger a cache flush even if atomic is TRUE. 4340 */ 4341 fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr); 4342 if (fp != NULL) { 4343 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4344 NULL)) { 4345 VN_RELE(vp); 4346 rfs4_file_rele(fp); 4347 *cs->statusp = resp->status = NFS4ERR_DELAY; 4348 if (nm != name) 4349 kmem_free(name, MAXPATHLEN + 1); 4350 kmem_free(nm, len); 4351 goto out; 4352 } 4353 } 4354 4355 /* Didn't find anything to remove */ 4356 if (vp == NULL) { 4357 *cs->statusp = resp->status = error; 4358 if (nm != name) 4359 kmem_free(name, MAXPATHLEN + 1); 4360 kmem_free(nm, len); 4361 goto out; 4362 } 4363 4364 if (nbl_need_check(vp)) { 4365 nbl_start_crit(vp, RW_READER); 4366 in_crit = 1; 4367 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4368 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4369 if (nm != name) 4370 kmem_free(name, MAXPATHLEN + 1); 4371 kmem_free(nm, len); 4372 nbl_end_crit(vp); 4373 VN_RELE(vp); 4374 if (fp) { 4375 rfs4_clear_dont_grant(fp); 4376 rfs4_file_rele(fp); 4377 } 4378 goto out; 4379 } 4380 } 4381 4382 /* check label before allowing removal */ 4383 if (is_system_labeled()) { 4384 ASSERT(req->rq_label != NULL); 4385 clabel = req->rq_label; 4386 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4387 "got client label from request(1)", 4388 struct svc_req *, req); 4389 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4390 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4391 cs->exi)) { 4392 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4393 if (name != nm) 4394 kmem_free(name, MAXPATHLEN + 1); 4395 kmem_free(nm, len); 4396 if (in_crit) 4397 nbl_end_crit(vp); 4398 VN_RELE(vp); 4399 if (fp) { 4400 rfs4_clear_dont_grant(fp); 4401 rfs4_file_rele(fp); 4402 } 4403 goto out; 4404 } 4405 } 4406 } 4407 4408 /* Get dir "before" change value */ 4409 bdva.va_mask = AT_CTIME|AT_SEQ; 4410 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4411 if (error) { 4412 *cs->statusp = resp->status = puterrno4(error); 4413 if (nm != name) 4414 kmem_free(name, MAXPATHLEN + 1); 4415 kmem_free(nm, len); 4416 if (in_crit) 4417 nbl_end_crit(vp); 4418 VN_RELE(vp); 4419 if (fp) { 4420 rfs4_clear_dont_grant(fp); 4421 rfs4_file_rele(fp); 4422 } 4423 goto out; 4424 } 4425 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4426 4427 /* Actually do the REMOVE operation */ 4428 if (vp->v_type == VDIR) { 4429 /* 4430 * Can't remove a directory that has a mounted-on filesystem. 4431 */ 4432 if (vn_ismntpt(vp)) { 4433 error = EACCES; 4434 } else { 4435 /* 4436 * System V defines rmdir to return EEXIST, 4437 * not ENOTEMPTY, if the directory is not 4438 * empty. A System V NFS server needs to map 4439 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4440 * transmit over the wire. 4441 */ 4442 if ((error = VOP_RMDIR(dvp, name, ZONE_ROOTVP(), cs->cr, 4443 NULL, 0)) == EEXIST) 4444 error = ENOTEMPTY; 4445 } 4446 } else { 4447 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4448 fp != NULL) { 4449 struct vattr va; 4450 vnode_t *tvp; 4451 4452 rfs4_dbe_lock(fp->rf_dbe); 4453 tvp = fp->rf_vp; 4454 if (tvp) 4455 VN_HOLD(tvp); 4456 rfs4_dbe_unlock(fp->rf_dbe); 4457 4458 if (tvp) { 4459 /* 4460 * This is va_seq safe because we are not 4461 * manipulating dvp. 4462 */ 4463 va.va_mask = AT_NLINK; 4464 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4465 va.va_nlink == 0) { 4466 /* Remove state on file remove */ 4467 if (in_crit) { 4468 nbl_end_crit(vp); 4469 in_crit = 0; 4470 } 4471 rfs4_close_all_state(fp); 4472 } 4473 VN_RELE(tvp); 4474 } 4475 } 4476 } 4477 4478 if (in_crit) 4479 nbl_end_crit(vp); 4480 VN_RELE(vp); 4481 4482 if (fp) { 4483 rfs4_clear_dont_grant(fp); 4484 rfs4_file_rele(fp); 4485 } 4486 if (nm != name) 4487 kmem_free(name, MAXPATHLEN + 1); 4488 kmem_free(nm, len); 4489 4490 if (error) { 4491 *cs->statusp = resp->status = puterrno4(error); 4492 goto out; 4493 } 4494 4495 /* 4496 * Get the initial "after" sequence number, if it fails, set to zero 4497 */ 4498 idva.va_mask = AT_SEQ; 4499 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4500 idva.va_seq = 0; 4501 4502 /* 4503 * Force modified data and metadata out to stable storage. 4504 */ 4505 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4506 4507 /* 4508 * Get "after" change value, if it fails, simply return the 4509 * before value. 4510 */ 4511 adva.va_mask = AT_CTIME|AT_SEQ; 4512 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4513 adva.va_ctime = bdva.va_ctime; 4514 adva.va_seq = 0; 4515 } 4516 4517 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4518 4519 /* 4520 * The cinfo.atomic = TRUE only if we have 4521 * non-zero va_seq's, and it has incremented by exactly one 4522 * during the VOP_REMOVE/RMDIR and it didn't change during 4523 * the VOP_FSYNC. 4524 */ 4525 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4526 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4527 resp->cinfo.atomic = TRUE; 4528 else 4529 resp->cinfo.atomic = FALSE; 4530 4531 *cs->statusp = resp->status = NFS4_OK; 4532 4533 out: 4534 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4535 REMOVE4res *, resp); 4536 } 4537 4538 /* 4539 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4540 * oldname and newname. 4541 * res: status. If success - CURRENT_FH unchanged, return change_info 4542 * for both from and target directories. 4543 */ 4544 /* ARGSUSED */ 4545 static void 4546 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4547 struct compound_state *cs) 4548 { 4549 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4550 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4551 int error; 4552 vnode_t *odvp; 4553 vnode_t *ndvp; 4554 vnode_t *srcvp, *targvp, *tvp; 4555 struct vattr obdva, oidva, oadva; 4556 struct vattr nbdva, nidva, nadva; 4557 char *onm, *nnm; 4558 uint_t olen, nlen; 4559 rfs4_file_t *fp, *sfp; 4560 int in_crit_src, in_crit_targ; 4561 int fp_rele_grant_hold, sfp_rele_grant_hold; 4562 int unlinked; 4563 bslabel_t *clabel; 4564 struct sockaddr *ca; 4565 char *converted_onm = NULL; 4566 char *converted_nnm = NULL; 4567 nfsstat4 status; 4568 4569 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4570 RENAME4args *, args); 4571 4572 fp = sfp = NULL; 4573 srcvp = targvp = tvp = NULL; 4574 in_crit_src = in_crit_targ = 0; 4575 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4576 unlinked = 0; 4577 4578 /* CURRENT_FH: target directory */ 4579 ndvp = cs->vp; 4580 if (ndvp == NULL) { 4581 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4582 goto out; 4583 } 4584 4585 /* SAVED_FH: from directory */ 4586 odvp = cs->saved_vp; 4587 if (odvp == NULL) { 4588 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4589 goto out; 4590 } 4591 4592 if (cs->access == CS_ACCESS_DENIED) { 4593 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4594 goto out; 4595 } 4596 4597 /* 4598 * If there is an unshared filesystem mounted on this vnode, 4599 * do not allow to rename objects in this directory. 4600 */ 4601 if (vn_ismntpt(odvp)) { 4602 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4603 goto out; 4604 } 4605 4606 /* 4607 * If there is an unshared filesystem mounted on this vnode, 4608 * do not allow to rename to this directory. 4609 */ 4610 if (vn_ismntpt(ndvp)) { 4611 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4612 goto out; 4613 } 4614 4615 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4616 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4617 goto out; 4618 } 4619 4620 if (cs->saved_exi != cs->exi) { 4621 *cs->statusp = resp->status = NFS4ERR_XDEV; 4622 goto out; 4623 } 4624 4625 status = utf8_dir_verify(&args->oldname); 4626 if (status != NFS4_OK) { 4627 *cs->statusp = resp->status = status; 4628 goto out; 4629 } 4630 4631 status = utf8_dir_verify(&args->newname); 4632 if (status != NFS4_OK) { 4633 *cs->statusp = resp->status = status; 4634 goto out; 4635 } 4636 4637 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4638 if (onm == NULL) { 4639 *cs->statusp = resp->status = NFS4ERR_INVAL; 4640 goto out; 4641 } 4642 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4643 nlen = MAXPATHLEN + 1; 4644 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4645 nlen); 4646 4647 if (converted_onm == NULL) { 4648 *cs->statusp = resp->status = NFS4ERR_INVAL; 4649 kmem_free(onm, olen); 4650 goto out; 4651 } 4652 4653 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4654 if (nnm == NULL) { 4655 *cs->statusp = resp->status = NFS4ERR_INVAL; 4656 if (onm != converted_onm) 4657 kmem_free(converted_onm, MAXPATHLEN + 1); 4658 kmem_free(onm, olen); 4659 goto out; 4660 } 4661 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4662 MAXPATHLEN + 1); 4663 4664 if (converted_nnm == NULL) { 4665 *cs->statusp = resp->status = NFS4ERR_INVAL; 4666 kmem_free(nnm, nlen); 4667 nnm = NULL; 4668 if (onm != converted_onm) 4669 kmem_free(converted_onm, MAXPATHLEN + 1); 4670 kmem_free(onm, olen); 4671 goto out; 4672 } 4673 4674 4675 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4676 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4677 kmem_free(onm, olen); 4678 kmem_free(nnm, nlen); 4679 goto out; 4680 } 4681 4682 4683 if (rdonly4(req, cs)) { 4684 *cs->statusp = resp->status = NFS4ERR_ROFS; 4685 if (onm != converted_onm) 4686 kmem_free(converted_onm, MAXPATHLEN + 1); 4687 kmem_free(onm, olen); 4688 if (nnm != converted_nnm) 4689 kmem_free(converted_nnm, MAXPATHLEN + 1); 4690 kmem_free(nnm, nlen); 4691 goto out; 4692 } 4693 4694 /* check label of the target dir */ 4695 if (is_system_labeled()) { 4696 ASSERT(req->rq_label != NULL); 4697 clabel = req->rq_label; 4698 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4699 "got client label from request(1)", 4700 struct svc_req *, req); 4701 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4702 if (!do_rfs_label_check(clabel, ndvp, 4703 EQUALITY_CHECK, cs->exi)) { 4704 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4705 goto err_out; 4706 } 4707 } 4708 } 4709 4710 /* 4711 * Is the source a file and have a delegation? 4712 * We don't need to acquire va_seq before these lookups, if 4713 * it causes an update, cinfo.before will not match, which will 4714 * trigger a cache flush even if atomic is TRUE. 4715 */ 4716 sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4717 &error, cs->cr); 4718 if (sfp != NULL) { 4719 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4720 NULL)) { 4721 *cs->statusp = resp->status = NFS4ERR_DELAY; 4722 goto err_out; 4723 } 4724 } 4725 4726 if (srcvp == NULL) { 4727 *cs->statusp = resp->status = puterrno4(error); 4728 if (onm != converted_onm) 4729 kmem_free(converted_onm, MAXPATHLEN + 1); 4730 kmem_free(onm, olen); 4731 if (nnm != converted_nnm) 4732 kmem_free(converted_nnm, MAXPATHLEN + 1); 4733 kmem_free(nnm, nlen); 4734 goto out; 4735 } 4736 4737 sfp_rele_grant_hold = 1; 4738 4739 /* Does the destination exist and a file and have a delegation? */ 4740 fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, NULL, 4741 cs->cr); 4742 if (fp != NULL) { 4743 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4744 NULL)) { 4745 *cs->statusp = resp->status = NFS4ERR_DELAY; 4746 goto err_out; 4747 } 4748 } 4749 fp_rele_grant_hold = 1; 4750 4751 /* Check for NBMAND lock on both source and target */ 4752 if (nbl_need_check(srcvp)) { 4753 nbl_start_crit(srcvp, RW_READER); 4754 in_crit_src = 1; 4755 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4756 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4757 goto err_out; 4758 } 4759 } 4760 4761 if (targvp && nbl_need_check(targvp)) { 4762 nbl_start_crit(targvp, RW_READER); 4763 in_crit_targ = 1; 4764 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4765 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4766 goto err_out; 4767 } 4768 } 4769 4770 /* Get source "before" change value */ 4771 obdva.va_mask = AT_CTIME|AT_SEQ; 4772 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4773 if (!error) { 4774 nbdva.va_mask = AT_CTIME|AT_SEQ; 4775 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4776 } 4777 if (error) { 4778 *cs->statusp = resp->status = puterrno4(error); 4779 goto err_out; 4780 } 4781 4782 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4783 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4784 4785 error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, cs->cr, 4786 NULL, 0); 4787 4788 /* 4789 * If target existed and was unlinked by VOP_RENAME, state will need 4790 * closed. To avoid deadlock, rfs4_close_all_state will be done after 4791 * any necessary nbl_end_crit on srcvp and tgtvp. 4792 */ 4793 if (error == 0 && fp != NULL) { 4794 rfs4_dbe_lock(fp->rf_dbe); 4795 tvp = fp->rf_vp; 4796 if (tvp) 4797 VN_HOLD(tvp); 4798 rfs4_dbe_unlock(fp->rf_dbe); 4799 4800 if (tvp) { 4801 struct vattr va; 4802 va.va_mask = AT_NLINK; 4803 4804 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4805 va.va_nlink == 0) { 4806 unlinked = 1; 4807 4808 /* DEBUG data */ 4809 if ((srcvp == targvp) || (tvp != targvp)) { 4810 cmn_err(CE_WARN, "rfs4_op_rename: " 4811 "srcvp %p, targvp: %p, tvp: %p", 4812 (void *)srcvp, (void *)targvp, 4813 (void *)tvp); 4814 } 4815 } else { 4816 VN_RELE(tvp); 4817 } 4818 } 4819 } 4820 if (error == 0) 4821 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4822 4823 if (in_crit_src) 4824 nbl_end_crit(srcvp); 4825 if (srcvp) 4826 VN_RELE(srcvp); 4827 if (in_crit_targ) 4828 nbl_end_crit(targvp); 4829 if (targvp) 4830 VN_RELE(targvp); 4831 4832 if (unlinked) { 4833 ASSERT(fp != NULL); 4834 ASSERT(tvp != NULL); 4835 4836 /* DEBUG data */ 4837 if (RW_READ_HELD(&tvp->v_nbllock)) { 4838 cmn_err(CE_WARN, "rfs4_op_rename: " 4839 "RW_READ_HELD(%p)", (void *)tvp); 4840 } 4841 4842 /* The file is gone and so should the state */ 4843 rfs4_close_all_state(fp); 4844 VN_RELE(tvp); 4845 } 4846 4847 if (sfp) { 4848 rfs4_clear_dont_grant(sfp); 4849 rfs4_file_rele(sfp); 4850 } 4851 if (fp) { 4852 rfs4_clear_dont_grant(fp); 4853 rfs4_file_rele(fp); 4854 } 4855 4856 if (converted_onm != onm) 4857 kmem_free(converted_onm, MAXPATHLEN + 1); 4858 kmem_free(onm, olen); 4859 if (converted_nnm != nnm) 4860 kmem_free(converted_nnm, MAXPATHLEN + 1); 4861 kmem_free(nnm, nlen); 4862 4863 /* 4864 * Get the initial "after" sequence number, if it fails, set to zero 4865 */ 4866 oidva.va_mask = AT_SEQ; 4867 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4868 oidva.va_seq = 0; 4869 4870 nidva.va_mask = AT_SEQ; 4871 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4872 nidva.va_seq = 0; 4873 4874 /* 4875 * Force modified data and metadata out to stable storage. 4876 */ 4877 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4878 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4879 4880 if (error) { 4881 *cs->statusp = resp->status = puterrno4(error); 4882 goto out; 4883 } 4884 4885 /* 4886 * Get "after" change values, if it fails, simply return the 4887 * before value. 4888 */ 4889 oadva.va_mask = AT_CTIME|AT_SEQ; 4890 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4891 oadva.va_ctime = obdva.va_ctime; 4892 oadva.va_seq = 0; 4893 } 4894 4895 nadva.va_mask = AT_CTIME|AT_SEQ; 4896 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4897 nadva.va_ctime = nbdva.va_ctime; 4898 nadva.va_seq = 0; 4899 } 4900 4901 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4902 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4903 4904 /* 4905 * The cinfo.atomic = TRUE only if we have 4906 * non-zero va_seq's, and it has incremented by exactly one 4907 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4908 */ 4909 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4910 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4911 resp->source_cinfo.atomic = TRUE; 4912 else 4913 resp->source_cinfo.atomic = FALSE; 4914 4915 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4916 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4917 resp->target_cinfo.atomic = TRUE; 4918 else 4919 resp->target_cinfo.atomic = FALSE; 4920 4921 #ifdef VOLATILE_FH_TEST 4922 { 4923 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4924 4925 /* 4926 * Add the renamed file handle to the volatile rename list 4927 */ 4928 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4929 /* file handles may expire on rename */ 4930 vnode_t *vp; 4931 4932 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4933 /* 4934 * Already know that nnm will be a valid string 4935 */ 4936 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4937 NULL, NULL, NULL); 4938 kmem_free(nnm, nlen); 4939 if (!error) { 4940 add_volrnm_fh(cs->exi, vp); 4941 VN_RELE(vp); 4942 } 4943 } 4944 } 4945 #endif /* VOLATILE_FH_TEST */ 4946 4947 *cs->statusp = resp->status = NFS4_OK; 4948 out: 4949 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4950 RENAME4res *, resp); 4951 return; 4952 4953 err_out: 4954 if (onm != converted_onm) 4955 kmem_free(converted_onm, MAXPATHLEN + 1); 4956 if (onm != NULL) 4957 kmem_free(onm, olen); 4958 if (nnm != converted_nnm) 4959 kmem_free(converted_nnm, MAXPATHLEN + 1); 4960 if (nnm != NULL) 4961 kmem_free(nnm, nlen); 4962 4963 if (in_crit_src) nbl_end_crit(srcvp); 4964 if (in_crit_targ) nbl_end_crit(targvp); 4965 if (targvp) VN_RELE(targvp); 4966 if (srcvp) VN_RELE(srcvp); 4967 if (sfp) { 4968 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4969 rfs4_file_rele(sfp); 4970 } 4971 if (fp) { 4972 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4973 rfs4_file_rele(fp); 4974 } 4975 4976 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4977 RENAME4res *, resp); 4978 } 4979 4980 /* ARGSUSED */ 4981 static void 4982 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4983 struct compound_state *cs) 4984 { 4985 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4986 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4987 rfs4_client_t *cp; 4988 4989 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4990 RENEW4args *, args); 4991 4992 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4993 *cs->statusp = resp->status = 4994 rfs4_check_clientid(&args->clientid, 0); 4995 goto out; 4996 } 4997 4998 if (rfs4_lease_expired(cp)) { 4999 rfs4_client_rele(cp); 5000 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 5001 goto out; 5002 } 5003 5004 rfs4_update_lease(cp); 5005 5006 mutex_enter(cp->rc_cbinfo.cb_lock); 5007 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 5008 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 5009 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 5010 } else { 5011 *cs->statusp = resp->status = NFS4_OK; 5012 } 5013 mutex_exit(cp->rc_cbinfo.cb_lock); 5014 5015 rfs4_client_rele(cp); 5016 5017 out: 5018 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 5019 RENEW4res *, resp); 5020 } 5021 5022 /* ARGSUSED */ 5023 static void 5024 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 5025 struct compound_state *cs) 5026 { 5027 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 5028 5029 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 5030 5031 /* No need to check cs->access - we are not accessing any object */ 5032 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 5033 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 5034 goto out; 5035 } 5036 if (cs->vp != NULL) { 5037 VN_RELE(cs->vp); 5038 } 5039 cs->vp = cs->saved_vp; 5040 cs->saved_vp = NULL; 5041 cs->exi = cs->saved_exi; 5042 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 5043 *cs->statusp = resp->status = NFS4_OK; 5044 cs->deleg = FALSE; 5045 5046 out: 5047 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 5048 RESTOREFH4res *, resp); 5049 } 5050 5051 /* ARGSUSED */ 5052 static void 5053 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5054 struct compound_state *cs) 5055 { 5056 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 5057 5058 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 5059 5060 /* No need to check cs->access - we are not accessing any object */ 5061 if (cs->vp == NULL) { 5062 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5063 goto out; 5064 } 5065 if (cs->saved_vp != NULL) { 5066 VN_RELE(cs->saved_vp); 5067 } 5068 cs->saved_vp = cs->vp; 5069 VN_HOLD(cs->saved_vp); 5070 cs->saved_exi = cs->exi; 5071 /* 5072 * since SAVEFH is fairly rare, don't alloc space for its fh 5073 * unless necessary. 5074 */ 5075 if (cs->saved_fh.nfs_fh4_val == NULL) { 5076 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 5077 } 5078 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 5079 *cs->statusp = resp->status = NFS4_OK; 5080 5081 out: 5082 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 5083 SAVEFH4res *, resp); 5084 } 5085 5086 /* 5087 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 5088 * return the bitmap of attrs that were set successfully. It is also 5089 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 5090 * always be called only after rfs4_do_set_attrs(). 5091 * 5092 * Verify that the attributes are same as the expected ones. sargp->vap 5093 * and sargp->sbp contain the input attributes as translated from fattr4. 5094 * 5095 * This function verifies only the attrs that correspond to a vattr or 5096 * vfsstat struct. That is because of the extra step needed to get the 5097 * corresponding system structs. Other attributes have already been set or 5098 * verified by do_rfs4_set_attrs. 5099 * 5100 * Return 0 if all attrs match, -1 if some don't, error if error processing. 5101 */ 5102 static int 5103 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 5104 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 5105 { 5106 int error, ret_error = 0; 5107 int i, k; 5108 uint_t sva_mask = sargp->vap->va_mask; 5109 uint_t vbit; 5110 union nfs4_attr_u *na; 5111 uint8_t *amap; 5112 bool_t getsb = ntovp->vfsstat; 5113 5114 if (sva_mask != 0) { 5115 /* 5116 * Okay to overwrite sargp->vap because we verify based 5117 * on the incoming values. 5118 */ 5119 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 5120 sargp->cs->cr, NULL); 5121 if (ret_error) { 5122 if (resp == NULL) 5123 return (ret_error); 5124 /* 5125 * Must return bitmap of successful attrs 5126 */ 5127 sva_mask = 0; /* to prevent checking vap later */ 5128 } else { 5129 /* 5130 * Some file systems clobber va_mask. it is probably 5131 * wrong of them to do so, nonethless we practice 5132 * defensive coding. 5133 * See bug id 4276830. 5134 */ 5135 sargp->vap->va_mask = sva_mask; 5136 } 5137 } 5138 5139 if (getsb) { 5140 /* 5141 * Now get the superblock and loop on the bitmap, as there is 5142 * no simple way of translating from superblock to bitmap4. 5143 */ 5144 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 5145 if (ret_error) { 5146 if (resp == NULL) 5147 goto errout; 5148 getsb = FALSE; 5149 } 5150 } 5151 5152 /* 5153 * Now loop and verify each attribute which getattr returned 5154 * whether it's the same as the input. 5155 */ 5156 if (resp == NULL && !getsb && (sva_mask == 0)) 5157 goto errout; 5158 5159 na = ntovp->na; 5160 amap = ntovp->amap; 5161 k = 0; 5162 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 5163 k = *amap; 5164 ASSERT(nfs4_ntov_map[k].nval == k); 5165 vbit = nfs4_ntov_map[k].vbit; 5166 5167 /* 5168 * If vattr attribute but VOP_GETATTR failed, or it's 5169 * superblock attribute but VFS_STATVFS failed, skip 5170 */ 5171 if (vbit) { 5172 if ((vbit & sva_mask) == 0) 5173 continue; 5174 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 5175 continue; 5176 } 5177 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 5178 if (resp != NULL) { 5179 if (error) 5180 ret_error = -1; /* not all match */ 5181 else /* update response bitmap */ 5182 *resp |= nfs4_ntov_map[k].fbit; 5183 continue; 5184 } 5185 if (error) { 5186 ret_error = -1; /* not all match */ 5187 break; 5188 } 5189 } 5190 errout: 5191 return (ret_error); 5192 } 5193 5194 /* 5195 * Decode the attribute to be set/verified. If the attr requires a sys op 5196 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 5197 * call the sv_getit function for it, because the sys op hasn't yet been done. 5198 * Return 0 for success, error code if failed. 5199 * 5200 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 5201 */ 5202 static int 5203 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 5204 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 5205 { 5206 int error = 0; 5207 bool_t set_later; 5208 5209 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 5210 5211 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 5212 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 5213 /* 5214 * don't verify yet if a vattr or sb dependent attr, 5215 * because we don't have their sys values yet. 5216 * Will be done later. 5217 */ 5218 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 5219 /* 5220 * ACLs are a special case, since setting the MODE 5221 * conflicts with setting the ACL. We delay setting 5222 * the ACL until all other attributes have been set. 5223 * The ACL gets set in do_rfs4_op_setattr(). 5224 */ 5225 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5226 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5227 sargp, nap); 5228 if (error) { 5229 xdr_free(nfs4_ntov_map[k].xfunc, 5230 (caddr_t)nap); 5231 } 5232 } 5233 } 5234 } else { 5235 #ifdef DEBUG 5236 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5237 "decoding attribute %d\n", k); 5238 #endif 5239 error = EINVAL; 5240 } 5241 if (!error && resp_bval && !set_later) { 5242 *resp_bval |= nfs4_ntov_map[k].fbit; 5243 } 5244 5245 return (error); 5246 } 5247 5248 /* 5249 * Set vattr based on incoming fattr4 attrs - used by setattr. 5250 * Set response mask. Ignore any values that are not writable vattr attrs. 5251 */ 5252 static nfsstat4 5253 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5254 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5255 nfs4_attr_cmd_t cmd) 5256 { 5257 int error = 0; 5258 int i; 5259 char *attrs = fattrp->attrlist4; 5260 uint32_t attrslen = fattrp->attrlist4_len; 5261 XDR xdr; 5262 nfsstat4 status = NFS4_OK; 5263 vnode_t *vp = cs->vp; 5264 union nfs4_attr_u *na; 5265 uint8_t *amap; 5266 5267 #ifndef lint 5268 /* 5269 * Make sure that maximum attribute number can be expressed as an 5270 * 8 bit quantity. 5271 */ 5272 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5273 #endif 5274 5275 if (vp == NULL) { 5276 if (resp) 5277 *resp = 0; 5278 return (NFS4ERR_NOFILEHANDLE); 5279 } 5280 if (cs->access == CS_ACCESS_DENIED) { 5281 if (resp) 5282 *resp = 0; 5283 return (NFS4ERR_ACCESS); 5284 } 5285 5286 sargp->op = cmd; 5287 sargp->cs = cs; 5288 sargp->flag = 0; /* may be set later */ 5289 sargp->vap->va_mask = 0; 5290 sargp->rdattr_error = NFS4_OK; 5291 sargp->rdattr_error_req = FALSE; 5292 /* sargp->sbp is set by the caller */ 5293 5294 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5295 5296 na = ntovp->na; 5297 amap = ntovp->amap; 5298 5299 /* 5300 * The following loop iterates on the nfs4_ntov_map checking 5301 * if the fbit is set in the requested bitmap. 5302 * If set then we process the arguments using the 5303 * rfs4_fattr4 conversion functions to populate the setattr 5304 * vattr and va_mask. Any settable attrs that are not using vattr 5305 * will be set in this loop. 5306 */ 5307 for (i = 0; i < nfs4_ntov_map_size; i++) { 5308 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5309 continue; 5310 } 5311 /* 5312 * If setattr, must be a writable attr. 5313 * If verify/nverify, must be a readable attr. 5314 */ 5315 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5316 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5317 /* 5318 * Client tries to set/verify an 5319 * unsupported attribute, tries to set 5320 * a read only attr or verify a write 5321 * only one - error! 5322 */ 5323 break; 5324 } 5325 /* 5326 * Decode the attribute to set/verify 5327 */ 5328 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5329 &xdr, resp ? resp : NULL, na); 5330 if (error) 5331 break; 5332 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5333 na++; 5334 (ntovp->attrcnt)++; 5335 if (nfs4_ntov_map[i].vfsstat) 5336 ntovp->vfsstat = TRUE; 5337 } 5338 5339 if (error != 0) 5340 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5341 puterrno4(error)); 5342 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5343 return (status); 5344 } 5345 5346 static nfsstat4 5347 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5348 stateid4 *stateid) 5349 { 5350 int error = 0; 5351 struct nfs4_svgetit_arg sarg; 5352 bool_t trunc; 5353 5354 nfsstat4 status = NFS4_OK; 5355 cred_t *cr = cs->cr; 5356 vnode_t *vp = cs->vp; 5357 struct nfs4_ntov_table ntov; 5358 struct statvfs64 sb; 5359 struct vattr bva; 5360 struct flock64 bf; 5361 int in_crit = 0; 5362 uint_t saved_mask = 0; 5363 caller_context_t ct; 5364 5365 *resp = 0; 5366 sarg.sbp = &sb; 5367 sarg.is_referral = B_FALSE; 5368 nfs4_ntov_table_init(&ntov); 5369 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5370 NFS4ATTR_SETIT); 5371 if (status != NFS4_OK) { 5372 /* 5373 * failed set attrs 5374 */ 5375 goto done; 5376 } 5377 5378 if ((sarg.vap->va_mask == 0) && 5379 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5380 /* 5381 * no further work to be done 5382 */ 5383 goto done; 5384 } 5385 5386 /* 5387 * If we got a request to set the ACL and the MODE, only 5388 * allow changing VSUID, VSGID, and VSVTX. Attempting 5389 * to change any other bits, along with setting an ACL, 5390 * gives NFS4ERR_INVAL. 5391 */ 5392 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5393 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5394 vattr_t va; 5395 5396 va.va_mask = AT_MODE; 5397 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5398 if (error) { 5399 status = puterrno4(error); 5400 goto done; 5401 } 5402 if ((sarg.vap->va_mode ^ va.va_mode) & 5403 ~(VSUID | VSGID | VSVTX)) { 5404 status = NFS4ERR_INVAL; 5405 goto done; 5406 } 5407 } 5408 5409 /* Check stateid only if size has been set */ 5410 if (sarg.vap->va_mask & AT_SIZE) { 5411 trunc = (sarg.vap->va_size == 0); 5412 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5413 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct, cs); 5414 if (status != NFS4_OK) 5415 goto done; 5416 } else { 5417 ct.cc_sysid = 0; 5418 ct.cc_pid = 0; 5419 ct.cc_caller_id = nfs4_srv_caller_id; 5420 ct.cc_flags = CC_DONTBLOCK; 5421 } 5422 5423 /* XXX start of possible race with delegations */ 5424 5425 /* 5426 * We need to specially handle size changes because it is 5427 * possible for the client to create a file with read-only 5428 * modes, but with the file opened for writing. If the client 5429 * then tries to set the file size, e.g. ftruncate(3C), 5430 * fcntl(F_FREESP), the normal access checking done in 5431 * VOP_SETATTR would prevent the client from doing it even though 5432 * it should be allowed to do so. To get around this, we do the 5433 * access checking for ourselves and use VOP_SPACE which doesn't 5434 * do the access checking. 5435 * Also the client should not be allowed to change the file 5436 * size if there is a conflicting non-blocking mandatory lock in 5437 * the region of the change. 5438 */ 5439 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5440 u_offset_t offset; 5441 ssize_t length; 5442 5443 /* 5444 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5445 * before returning, sarg.vap->va_mask is used to 5446 * generate the setattr reply bitmap. We also clear 5447 * AT_SIZE below before calling VOP_SPACE. For both 5448 * of these cases, the va_mask needs to be saved here 5449 * and restored after calling VOP_SETATTR. 5450 */ 5451 saved_mask = sarg.vap->va_mask; 5452 5453 /* 5454 * Check any possible conflict due to NBMAND locks. 5455 * Get into critical region before VOP_GETATTR, so the 5456 * size attribute is valid when checking conflicts. 5457 */ 5458 if (nbl_need_check(vp)) { 5459 nbl_start_crit(vp, RW_READER); 5460 in_crit = 1; 5461 } 5462 5463 bva.va_mask = AT_UID|AT_SIZE; 5464 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5465 if (error != 0) { 5466 status = puterrno4(error); 5467 goto done; 5468 } 5469 5470 if (in_crit) { 5471 if (sarg.vap->va_size < bva.va_size) { 5472 offset = sarg.vap->va_size; 5473 length = bva.va_size - sarg.vap->va_size; 5474 } else { 5475 offset = bva.va_size; 5476 length = sarg.vap->va_size - bva.va_size; 5477 } 5478 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5479 &ct)) { 5480 status = NFS4ERR_LOCKED; 5481 goto done; 5482 } 5483 } 5484 5485 if (crgetuid(cr) == bva.va_uid) { 5486 sarg.vap->va_mask &= ~AT_SIZE; 5487 bf.l_type = F_WRLCK; 5488 bf.l_whence = 0; 5489 bf.l_start = (off64_t)sarg.vap->va_size; 5490 bf.l_len = 0; 5491 bf.l_sysid = 0; 5492 bf.l_pid = 0; 5493 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5494 (offset_t)sarg.vap->va_size, cr, &ct); 5495 } 5496 } 5497 5498 if (!error && sarg.vap->va_mask != 0) 5499 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5500 5501 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5502 if (saved_mask & AT_SIZE) 5503 sarg.vap->va_mask |= AT_SIZE; 5504 5505 /* 5506 * If an ACL was being set, it has been delayed until now, 5507 * in order to set the mode (via the VOP_SETATTR() above) first. 5508 */ 5509 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5510 int i; 5511 5512 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5513 if (ntov.amap[i] == FATTR4_ACL) 5514 break; 5515 if (i < NFS4_MAXNUM_ATTRS) { 5516 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5517 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5518 if (error == 0) { 5519 *resp |= FATTR4_ACL_MASK; 5520 } else if (error == ENOTSUP) { 5521 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5522 status = NFS4ERR_ATTRNOTSUPP; 5523 goto done; 5524 } 5525 } else { 5526 NFS4_DEBUG(rfs4_debug, 5527 (CE_NOTE, "do_rfs4_op_setattr: " 5528 "unable to find ACL in fattr4")); 5529 error = EINVAL; 5530 } 5531 } 5532 5533 if (error) { 5534 /* check if a monitor detected a delegation conflict */ 5535 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5536 status = NFS4ERR_DELAY; 5537 else 5538 status = puterrno4(error); 5539 5540 /* 5541 * Set the response bitmap when setattr failed. 5542 * If VOP_SETATTR partially succeeded, test by doing a 5543 * VOP_GETATTR on the object and comparing the data 5544 * to the setattr arguments. 5545 */ 5546 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5547 } else { 5548 /* 5549 * Force modified metadata out to stable storage. 5550 */ 5551 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5552 /* 5553 * Set response bitmap 5554 */ 5555 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5556 } 5557 5558 /* Return early and already have a NFSv4 error */ 5559 done: 5560 /* 5561 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5562 * conversion sets both readable and writeable NFS4 attrs 5563 * for AT_MTIME and AT_ATIME. The line below masks out 5564 * unrequested attrs from the setattr result bitmap. This 5565 * is placed after the done: label to catch the ATTRNOTSUP 5566 * case. 5567 */ 5568 *resp &= fattrp->attrmask; 5569 5570 if (in_crit) 5571 nbl_end_crit(vp); 5572 5573 nfs4_ntov_table_free(&ntov, &sarg); 5574 5575 return (status); 5576 } 5577 5578 /* ARGSUSED */ 5579 static void 5580 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5581 struct compound_state *cs) 5582 { 5583 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5584 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5585 bslabel_t *clabel; 5586 5587 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5588 SETATTR4args *, args); 5589 5590 if (cs->vp == NULL) { 5591 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5592 goto out; 5593 } 5594 5595 /* 5596 * If there is an unshared filesystem mounted on this vnode, 5597 * do not allow to setattr on this vnode. 5598 */ 5599 if (vn_ismntpt(cs->vp)) { 5600 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5601 goto out; 5602 } 5603 5604 resp->attrsset = 0; 5605 5606 if (rdonly4(req, cs)) { 5607 *cs->statusp = resp->status = NFS4ERR_ROFS; 5608 goto out; 5609 } 5610 5611 /* check label before setting attributes */ 5612 if (is_system_labeled()) { 5613 ASSERT(req->rq_label != NULL); 5614 clabel = req->rq_label; 5615 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5616 "got client label from request(1)", 5617 struct svc_req *, req); 5618 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5619 if (!do_rfs_label_check(clabel, cs->vp, 5620 EQUALITY_CHECK, cs->exi)) { 5621 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5622 goto out; 5623 } 5624 } 5625 } 5626 5627 *cs->statusp = resp->status = 5628 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5629 &args->stateid); 5630 5631 out: 5632 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5633 SETATTR4res *, resp); 5634 } 5635 5636 /* ARGSUSED */ 5637 static void 5638 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5639 struct compound_state *cs) 5640 { 5641 /* 5642 * verify and nverify are exactly the same, except that nverify 5643 * succeeds when some argument changed, and verify succeeds when 5644 * when none changed. 5645 */ 5646 5647 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5648 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5649 5650 int error; 5651 struct nfs4_svgetit_arg sarg; 5652 struct statvfs64 sb; 5653 struct nfs4_ntov_table ntov; 5654 5655 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5656 VERIFY4args *, args); 5657 5658 if (cs->vp == NULL) { 5659 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5660 goto out; 5661 } 5662 5663 sarg.sbp = &sb; 5664 sarg.is_referral = B_FALSE; 5665 nfs4_ntov_table_init(&ntov); 5666 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5667 &sarg, &ntov, NFS4ATTR_VERIT); 5668 if (resp->status != NFS4_OK) { 5669 /* 5670 * do_rfs4_set_attrs will try to verify systemwide attrs, 5671 * so could return -1 for "no match". 5672 */ 5673 if (resp->status == -1) 5674 resp->status = NFS4ERR_NOT_SAME; 5675 goto done; 5676 } 5677 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5678 switch (error) { 5679 case 0: 5680 resp->status = NFS4_OK; 5681 break; 5682 case -1: 5683 resp->status = NFS4ERR_NOT_SAME; 5684 break; 5685 default: 5686 resp->status = puterrno4(error); 5687 break; 5688 } 5689 done: 5690 *cs->statusp = resp->status; 5691 nfs4_ntov_table_free(&ntov, &sarg); 5692 out: 5693 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5694 VERIFY4res *, resp); 5695 } 5696 5697 /* ARGSUSED */ 5698 static void 5699 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5700 struct compound_state *cs) 5701 { 5702 /* 5703 * verify and nverify are exactly the same, except that nverify 5704 * succeeds when some argument changed, and verify succeeds when 5705 * when none changed. 5706 */ 5707 5708 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5709 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5710 5711 int error; 5712 struct nfs4_svgetit_arg sarg; 5713 struct statvfs64 sb; 5714 struct nfs4_ntov_table ntov; 5715 5716 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5717 NVERIFY4args *, args); 5718 5719 if (cs->vp == NULL) { 5720 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5721 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5722 NVERIFY4res *, resp); 5723 return; 5724 } 5725 sarg.sbp = &sb; 5726 sarg.is_referral = B_FALSE; 5727 nfs4_ntov_table_init(&ntov); 5728 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5729 &sarg, &ntov, NFS4ATTR_VERIT); 5730 if (resp->status != NFS4_OK) { 5731 /* 5732 * do_rfs4_set_attrs will try to verify systemwide attrs, 5733 * so could return -1 for "no match". 5734 */ 5735 if (resp->status == -1) 5736 resp->status = NFS4_OK; 5737 goto done; 5738 } 5739 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5740 switch (error) { 5741 case 0: 5742 resp->status = NFS4ERR_SAME; 5743 break; 5744 case -1: 5745 resp->status = NFS4_OK; 5746 break; 5747 default: 5748 resp->status = puterrno4(error); 5749 break; 5750 } 5751 done: 5752 *cs->statusp = resp->status; 5753 nfs4_ntov_table_free(&ntov, &sarg); 5754 5755 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5756 NVERIFY4res *, resp); 5757 } 5758 5759 /* 5760 * XXX - This should live in an NFS header file. 5761 */ 5762 #define MAX_IOVECS 12 5763 5764 /* ARGSUSED */ 5765 static void 5766 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5767 struct compound_state *cs) 5768 { 5769 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5770 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5771 int error; 5772 vnode_t *vp; 5773 struct vattr bva; 5774 u_offset_t rlimit; 5775 struct uio uio; 5776 struct iovec iov[MAX_IOVECS]; 5777 struct iovec *iovp; 5778 int iovcnt; 5779 int ioflag; 5780 cred_t *savecred, *cr; 5781 bool_t *deleg = &cs->deleg; 5782 nfsstat4 stat; 5783 int in_crit = 0; 5784 caller_context_t ct; 5785 nfs4_srv_t *nsrv4; 5786 5787 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5788 WRITE4args *, args); 5789 5790 vp = cs->vp; 5791 if (vp == NULL) { 5792 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5793 goto out; 5794 } 5795 if (cs->access == CS_ACCESS_DENIED) { 5796 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5797 goto out; 5798 } 5799 5800 cr = cs->cr; 5801 5802 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5803 deleg, TRUE, &ct, cs)) != NFS4_OK) { 5804 *cs->statusp = resp->status = stat; 5805 goto out; 5806 } 5807 5808 /* 5809 * We have to enter the critical region before calling VOP_RWLOCK 5810 * to avoid a deadlock with ufs. 5811 */ 5812 if (nbl_need_check(vp)) { 5813 nbl_start_crit(vp, RW_READER); 5814 in_crit = 1; 5815 if (nbl_conflict(vp, NBL_WRITE, 5816 args->offset, args->data_len, 0, &ct)) { 5817 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5818 goto out; 5819 } 5820 } 5821 5822 bva.va_mask = AT_MODE | AT_UID; 5823 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5824 5825 /* 5826 * If we can't get the attributes, then we can't do the 5827 * right access checking. So, we'll fail the request. 5828 */ 5829 if (error) { 5830 *cs->statusp = resp->status = puterrno4(error); 5831 goto out; 5832 } 5833 5834 if (rdonly4(req, cs)) { 5835 *cs->statusp = resp->status = NFS4ERR_ROFS; 5836 goto out; 5837 } 5838 5839 if (vp->v_type != VREG) { 5840 *cs->statusp = resp->status = 5841 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5842 goto out; 5843 } 5844 5845 if (crgetuid(cr) != bva.va_uid && 5846 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5847 *cs->statusp = resp->status = puterrno4(error); 5848 goto out; 5849 } 5850 5851 if (MANDLOCK(vp, bva.va_mode)) { 5852 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5853 goto out; 5854 } 5855 5856 nsrv4 = nfs4_get_srv(); 5857 if (args->data_len == 0) { 5858 *cs->statusp = resp->status = NFS4_OK; 5859 resp->count = 0; 5860 resp->committed = args->stable; 5861 resp->writeverf = nsrv4->write4verf; 5862 goto out; 5863 } 5864 5865 if (args->mblk != NULL) { 5866 mblk_t *m; 5867 uint_t bytes, round_len; 5868 5869 iovcnt = 0; 5870 bytes = 0; 5871 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5872 for (m = args->mblk; 5873 m != NULL && bytes < round_len; 5874 m = m->b_cont) { 5875 iovcnt++; 5876 bytes += MBLKL(m); 5877 } 5878 #ifdef DEBUG 5879 /* should have ended on an mblk boundary */ 5880 if (bytes != round_len) { 5881 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5882 bytes, round_len, args->data_len); 5883 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5884 (void *)args->mblk, (void *)m); 5885 ASSERT(bytes == round_len); 5886 } 5887 #endif 5888 if (iovcnt <= MAX_IOVECS) { 5889 iovp = iov; 5890 } else { 5891 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5892 } 5893 mblk_to_iov(args->mblk, iovcnt, iovp); 5894 } else if (args->rlist != NULL) { 5895 iovcnt = 1; 5896 iovp = iov; 5897 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5898 iovp->iov_len = args->data_len; 5899 } else { 5900 iovcnt = 1; 5901 iovp = iov; 5902 iovp->iov_base = args->data_val; 5903 iovp->iov_len = args->data_len; 5904 } 5905 5906 uio.uio_iov = iovp; 5907 uio.uio_iovcnt = iovcnt; 5908 5909 uio.uio_segflg = UIO_SYSSPACE; 5910 uio.uio_extflg = UIO_COPY_DEFAULT; 5911 uio.uio_loffset = args->offset; 5912 uio.uio_resid = args->data_len; 5913 uio.uio_llimit = curproc->p_fsz_ctl; 5914 rlimit = uio.uio_llimit - args->offset; 5915 if (rlimit < (u_offset_t)uio.uio_resid) 5916 uio.uio_resid = (int)rlimit; 5917 5918 if (args->stable == UNSTABLE4) 5919 ioflag = 0; 5920 else if (args->stable == FILE_SYNC4) 5921 ioflag = FSYNC; 5922 else if (args->stable == DATA_SYNC4) 5923 ioflag = FDSYNC; 5924 else { 5925 if (iovp != iov) 5926 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5927 *cs->statusp = resp->status = NFS4ERR_INVAL; 5928 goto out; 5929 } 5930 5931 /* 5932 * We're changing creds because VM may fault and we need 5933 * the cred of the current thread to be used if quota 5934 * checking is enabled. 5935 */ 5936 savecred = curthread->t_cred; 5937 curthread->t_cred = cr; 5938 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5939 curthread->t_cred = savecred; 5940 5941 if (iovp != iov) 5942 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5943 5944 if (error) { 5945 *cs->statusp = resp->status = puterrno4(error); 5946 goto out; 5947 } 5948 5949 *cs->statusp = resp->status = NFS4_OK; 5950 resp->count = args->data_len - uio.uio_resid; 5951 5952 if (ioflag == 0) 5953 resp->committed = UNSTABLE4; 5954 else 5955 resp->committed = FILE_SYNC4; 5956 5957 resp->writeverf = nsrv4->write4verf; 5958 5959 out: 5960 if (in_crit) 5961 nbl_end_crit(vp); 5962 5963 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5964 WRITE4res *, resp); 5965 } 5966 5967 static inline int 5968 rfs4_opnum_in_range(const compound_state_t *cs, int opnum) 5969 { 5970 if (opnum < FIRST_NFS4_OP || opnum > LAST_NFS4_OP) 5971 return (0); 5972 else if (cs->minorversion == 0 && opnum > LAST_NFS40_OP) 5973 return (0); 5974 else if (cs->minorversion == 1 && opnum > LAST_NFS41_OP) 5975 return (0); 5976 else if (cs->minorversion == 2 && opnum > LAST_NFS42_OP) 5977 return (0); 5978 return (1); 5979 } 5980 5981 void 5982 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, compound_state_t *cs, 5983 struct svc_req *req, int *rv) 5984 { 5985 uint_t i; 5986 cred_t *cr; 5987 nfs4_srv_t *nsrv4; 5988 nfs_export_t *ne = nfs_get_export(); 5989 5990 if (rv != NULL) 5991 *rv = 0; 5992 /* 5993 * Form a reply tag by copying over the request tag. 5994 */ 5995 resp->tag.utf8string_len = args->tag.utf8string_len; 5996 if (args->tag.utf8string_len != 0) { 5997 resp->tag.utf8string_val = 5998 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5999 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 6000 resp->tag.utf8string_len); 6001 } else { 6002 resp->tag.utf8string_val = NULL; 6003 } 6004 6005 cs->statusp = &resp->status; 6006 cs->req = req; 6007 cs->minorversion = args->minorversion; 6008 resp->array = NULL; 6009 resp->array_len = 0; 6010 6011 if (args->array_len == 0) { 6012 resp->status = NFS4_OK; 6013 return; 6014 } 6015 6016 cr = svc_xprt_cred(req->rq_xprt); 6017 ASSERT(cr != NULL); 6018 6019 if (sec_svc_getcred(req, cr, &cs->principal, &cs->nfsflavor) == 0) { 6020 DTRACE_NFSV4_2(compound__start, struct compound_state *, 6021 cs, COMPOUND4args *, args); 6022 DTRACE_NFSV4_2(compound__done, struct compound_state *, 6023 cs, COMPOUND4res *, resp); 6024 svcerr_badcred(req->rq_xprt); 6025 if (rv != NULL) 6026 *rv = 1; 6027 return; 6028 } 6029 6030 resp->array_len = args->array_len; 6031 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 6032 KM_SLEEP); 6033 6034 cs->op_len = args->array_len; 6035 cs->basecr = cr; 6036 nsrv4 = nfs4_get_srv(); 6037 6038 DTRACE_NFSV4_2(compound__start, struct compound_state *, cs, 6039 COMPOUND4args *, args); 6040 6041 /* 6042 * For now, NFS4 compound processing must be protected by 6043 * exported_lock because it can access more than one exportinfo 6044 * per compound and share/unshare can now change multiple 6045 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 6046 * per proc (excluding public exinfo), and exi_count design 6047 * is sufficient to protect concurrent execution of NFS2/3 6048 * ops along with unexport. This lock will be removed as 6049 * part of the NFSv4 phase 2 namespace redesign work. 6050 */ 6051 rw_enter(&ne->exported_lock, RW_READER); 6052 6053 /* 6054 * If this is the first compound we've seen, we need to start all 6055 * new instances' grace periods. 6056 */ 6057 if (nsrv4->seen_first_compound == 0) { 6058 rfs4_grace_start_new(nsrv4); 6059 /* 6060 * This must be set after rfs4_grace_start_new(), otherwise 6061 * another thread could proceed past here before the former 6062 * is finished. 6063 */ 6064 nsrv4->seen_first_compound = 1; 6065 } 6066 6067 for (i = 0; i < args->array_len && cs->cont; i++) { 6068 nfs_argop4 *argop; 6069 nfs_resop4 *resop; 6070 uint_t op; 6071 kstat_named_t *stat = ne->ne_globals->rfsproccnt[NFS_V4]; 6072 6073 argop = &args->array[i]; 6074 resop = &resp->array[i]; 6075 resop->resop = argop->argop; 6076 op = (uint_t)resop->resop; 6077 6078 cs->op_pos = i; 6079 if (op < rfsv4disp_cnt && rfs4_opnum_in_range(cs, op)) { 6080 /* 6081 * Count the individual ops here; NULL and COMPOUND 6082 * are counted in common_dispatch() 6083 */ 6084 stat[op].value.ui64++; 6085 6086 NFS4_DEBUG(rfs4_debug > 1, 6087 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 6088 (*rfsv4disptab[op].dis_proc)(argop, resop, req, cs); 6089 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 6090 rfs4_op_string[op], *cs->statusp)); 6091 if (*cs->statusp != NFS4_OK) 6092 cs->cont = FALSE; 6093 } else { 6094 /* 6095 * This is effectively dead code since XDR code 6096 * will have already returned BADXDR if op doesn't 6097 * decode to legal value. This only done for a 6098 * day when XDR code doesn't verify v4 opcodes. 6099 */ 6100 op = OP_ILLEGAL; 6101 stat[OP_ILLEGAL_IDX].value.ui64++; 6102 6103 rfs4_op_illegal(argop, resop, req, cs); 6104 cs->cont = FALSE; 6105 } 6106 6107 /* 6108 * If not at last op, and if we are to stop, then 6109 * compact the results array. 6110 */ 6111 if ((i + 1) < args->array_len && !cs->cont) { 6112 nfs_resop4 *new_res = kmem_alloc( 6113 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 6114 bcopy(resp->array, 6115 new_res, (i+1) * sizeof (nfs_resop4)); 6116 kmem_free(resp->array, 6117 args->array_len * sizeof (nfs_resop4)); 6118 6119 resp->array_len = i + 1; 6120 resp->array = new_res; 6121 } 6122 } 6123 6124 rw_exit(&ne->exported_lock); 6125 6126 DTRACE_NFSV4_2(compound__done, struct compound_state *, cs, 6127 COMPOUND4res *, resp); 6128 6129 /* 6130 * done with this compound request, free the label 6131 */ 6132 6133 if (req->rq_label != NULL) { 6134 kmem_free(req->rq_label, sizeof (bslabel_t)); 6135 req->rq_label = NULL; 6136 } 6137 } 6138 6139 /* 6140 * XXX because of what appears to be duplicate calls to rfs4_compound_free 6141 * XXX zero out the tag and array values. Need to investigate why the 6142 * XXX calls occur, but at least prevent the panic for now. 6143 */ 6144 void 6145 rfs4_compound_free(COMPOUND4res *resp) 6146 { 6147 uint_t i; 6148 6149 if (resp->tag.utf8string_val) { 6150 UTF8STRING_FREE(resp->tag) 6151 } 6152 6153 for (i = 0; i < resp->array_len; i++) { 6154 nfs_resop4 *resop; 6155 uint_t op; 6156 6157 resop = &resp->array[i]; 6158 op = (uint_t)resop->resop; 6159 if (op < rfsv4disp_cnt) { 6160 (*rfsv4disptab[op].dis_resfree)(resop); 6161 } 6162 } 6163 if (resp->array != NULL) { 6164 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 6165 } 6166 } 6167 6168 /* 6169 * Process the value of the compound request rpc flags, as a bit-AND 6170 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 6171 */ 6172 void 6173 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 6174 { 6175 int i; 6176 int flag = RPC_ALL; 6177 6178 for (i = 0; flag && i < args->array_len; i++) { 6179 uint_t op; 6180 6181 op = (uint_t)args->array[i].argop; 6182 6183 if (op < rfsv4disp_cnt) 6184 flag &= rfsv4disptab[op].dis_flags; 6185 else 6186 flag = 0; 6187 } 6188 *flagp = flag; 6189 } 6190 6191 nfsstat4 6192 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 6193 { 6194 nfsstat4 e; 6195 6196 rfs4_dbe_lock(cp->rc_dbe); 6197 6198 if (cp->rc_sysidt != LM_NOSYSID) { 6199 *sp = cp->rc_sysidt; 6200 e = NFS4_OK; 6201 6202 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 6203 *sp = cp->rc_sysidt; 6204 e = NFS4_OK; 6205 6206 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6207 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 6208 } else 6209 e = NFS4ERR_DELAY; 6210 6211 rfs4_dbe_unlock(cp->rc_dbe); 6212 return (e); 6213 } 6214 6215 #if defined(DEBUG) && ! defined(lint) 6216 static void lock_print(char *str, int operation, struct flock64 *flk) 6217 { 6218 char *op, *type; 6219 6220 switch (operation) { 6221 case F_GETLK: op = "F_GETLK"; 6222 break; 6223 case F_SETLK: op = "F_SETLK"; 6224 break; 6225 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6226 break; 6227 default: op = "F_UNKNOWN"; 6228 break; 6229 } 6230 switch (flk->l_type) { 6231 case F_UNLCK: type = "F_UNLCK"; 6232 break; 6233 case F_RDLCK: type = "F_RDLCK"; 6234 break; 6235 case F_WRLCK: type = "F_WRLCK"; 6236 break; 6237 default: type = "F_UNKNOWN"; 6238 break; 6239 } 6240 6241 ASSERT(flk->l_whence == 0); 6242 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6243 str, op, type, (longlong_t)flk->l_start, 6244 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6245 } 6246 6247 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6248 #else 6249 #define LOCK_PRINT(d, s, t, f) 6250 #endif 6251 6252 /*ARGSUSED*/ 6253 static bool_t 6254 creds_ok(cred_set_t *cr_set, struct svc_req *req, struct compound_state *cs) 6255 { 6256 return (TRUE); 6257 } 6258 6259 /* 6260 * Look up the pathname using the vp in cs as the directory vnode. 6261 * cs->vp will be the vnode for the file on success 6262 */ 6263 6264 static nfsstat4 6265 rfs4_lookup(component4 *component, struct svc_req *req, 6266 struct compound_state *cs) 6267 { 6268 char *nm; 6269 uint32_t len; 6270 nfsstat4 status; 6271 struct sockaddr *ca; 6272 char *name; 6273 6274 if (cs->vp == NULL) { 6275 return (NFS4ERR_NOFILEHANDLE); 6276 } 6277 if (cs->vp->v_type != VDIR) { 6278 return (NFS4ERR_NOTDIR); 6279 } 6280 6281 status = utf8_dir_verify(component); 6282 if (status != NFS4_OK) 6283 return (status); 6284 6285 nm = utf8_to_fn(component, &len, NULL); 6286 if (nm == NULL) { 6287 return (NFS4ERR_INVAL); 6288 } 6289 6290 if (len > MAXNAMELEN) { 6291 kmem_free(nm, len); 6292 return (NFS4ERR_NAMETOOLONG); 6293 } 6294 6295 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6296 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6297 MAXPATHLEN + 1); 6298 6299 if (name == NULL) { 6300 kmem_free(nm, len); 6301 return (NFS4ERR_INVAL); 6302 } 6303 6304 status = do_rfs4_op_lookup(name, req, cs); 6305 6306 if (name != nm) 6307 kmem_free(name, MAXPATHLEN + 1); 6308 6309 kmem_free(nm, len); 6310 6311 return (status); 6312 } 6313 6314 static nfsstat4 6315 rfs4_lookupfile(component4 *component, struct svc_req *req, 6316 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6317 { 6318 nfsstat4 status; 6319 vnode_t *dvp = cs->vp; 6320 vattr_t bva, ava, fva; 6321 int error; 6322 6323 /* Get "before" change value */ 6324 bva.va_mask = AT_CTIME|AT_SEQ; 6325 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6326 if (error) 6327 return (puterrno4(error)); 6328 6329 /* rfs4_lookup may VN_RELE directory */ 6330 VN_HOLD(dvp); 6331 6332 status = rfs4_lookup(component, req, cs); 6333 if (status != NFS4_OK) { 6334 VN_RELE(dvp); 6335 return (status); 6336 } 6337 6338 /* 6339 * Get "after" change value, if it fails, simply return the 6340 * before value. 6341 */ 6342 ava.va_mask = AT_CTIME|AT_SEQ; 6343 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6344 ava.va_ctime = bva.va_ctime; 6345 ava.va_seq = 0; 6346 } 6347 VN_RELE(dvp); 6348 6349 /* 6350 * Validate the file is a file 6351 */ 6352 fva.va_mask = AT_TYPE|AT_MODE; 6353 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6354 if (error) 6355 return (puterrno4(error)); 6356 6357 if (fva.va_type != VREG) { 6358 if (fva.va_type == VDIR) 6359 return (NFS4ERR_ISDIR); 6360 if (fva.va_type == VLNK) 6361 return (NFS4ERR_SYMLINK); 6362 return (NFS4ERR_INVAL); 6363 } 6364 6365 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6366 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6367 6368 /* 6369 * It is undefined if VOP_LOOKUP will change va_seq, so 6370 * cinfo.atomic = TRUE only if we have 6371 * non-zero va_seq's, and they have not changed. 6372 */ 6373 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6374 cinfo->atomic = TRUE; 6375 else 6376 cinfo->atomic = FALSE; 6377 6378 /* Check for mandatory locking */ 6379 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6380 return (check_open_access(access, cs, req)); 6381 } 6382 6383 static nfsstat4 6384 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6385 cred_t *cr, vnode_t **vpp, bool_t *created) 6386 { 6387 int error; 6388 nfsstat4 status = NFS4_OK; 6389 vattr_t va; 6390 6391 tryagain: 6392 6393 /* 6394 * The file open mode used is VWRITE. If the client needs 6395 * some other semantic, then it should do the access checking 6396 * itself. It would have been nice to have the file open mode 6397 * passed as part of the arguments. 6398 */ 6399 6400 *created = TRUE; 6401 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6402 6403 if (error) { 6404 *created = FALSE; 6405 6406 /* 6407 * If we got something other than file already exists 6408 * then just return this error. Otherwise, we got 6409 * EEXIST. If we were doing a GUARDED create, then 6410 * just return this error. Otherwise, we need to 6411 * make sure that this wasn't a duplicate of an 6412 * exclusive create request. 6413 * 6414 * The assumption is made that a non-exclusive create 6415 * request will never return EEXIST. 6416 */ 6417 6418 if (error != EEXIST || mode == GUARDED4) { 6419 status = puterrno4(error); 6420 return (status); 6421 } 6422 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6423 NULL, NULL, NULL); 6424 6425 if (error) { 6426 /* 6427 * We couldn't find the file that we thought that 6428 * we just created. So, we'll just try creating 6429 * it again. 6430 */ 6431 if (error == ENOENT) 6432 goto tryagain; 6433 6434 status = puterrno4(error); 6435 return (status); 6436 } 6437 6438 if (mode == UNCHECKED4) { 6439 /* existing object must be regular file */ 6440 if ((*vpp)->v_type != VREG) { 6441 if ((*vpp)->v_type == VDIR) 6442 status = NFS4ERR_ISDIR; 6443 else if ((*vpp)->v_type == VLNK) 6444 status = NFS4ERR_SYMLINK; 6445 else 6446 status = NFS4ERR_INVAL; 6447 VN_RELE(*vpp); 6448 return (status); 6449 } 6450 6451 return (NFS4_OK); 6452 } 6453 6454 /* Check for duplicate request */ 6455 va.va_mask = AT_MTIME; 6456 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6457 if (!error) { 6458 /* We found the file */ 6459 const timestruc_t *mtime = &vap->va_mtime; 6460 6461 if (va.va_mtime.tv_sec != mtime->tv_sec || 6462 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6463 /* but its not our creation */ 6464 VN_RELE(*vpp); 6465 return (NFS4ERR_EXIST); 6466 } 6467 *created = TRUE; /* retrans of create == created */ 6468 return (NFS4_OK); 6469 } 6470 VN_RELE(*vpp); 6471 return (NFS4ERR_EXIST); 6472 } 6473 6474 return (NFS4_OK); 6475 } 6476 6477 static nfsstat4 6478 check_open_access(uint32_t access, struct compound_state *cs, 6479 struct svc_req *req) 6480 { 6481 int error; 6482 vnode_t *vp; 6483 bool_t readonly; 6484 cred_t *cr = cs->cr; 6485 6486 /* For now we don't allow mandatory locking as per V2/V3 */ 6487 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6488 return (NFS4ERR_ACCESS); 6489 } 6490 6491 vp = cs->vp; 6492 ASSERT(cr != NULL && vp->v_type == VREG); 6493 6494 /* 6495 * If the file system is exported read only and we are trying 6496 * to open for write, then return NFS4ERR_ROFS 6497 */ 6498 6499 readonly = rdonly4(req, cs); 6500 6501 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6502 return (NFS4ERR_ROFS); 6503 6504 if (access & OPEN4_SHARE_ACCESS_READ) { 6505 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6506 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6507 return (NFS4ERR_ACCESS); 6508 } 6509 } 6510 6511 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6512 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6513 if (error) 6514 return (NFS4ERR_ACCESS); 6515 } 6516 6517 return (NFS4_OK); 6518 } 6519 6520 static void 6521 rfs4_verifier_to_mtime(verifier4 v, timestruc_t *mtime) 6522 { 6523 timespec32_t *time = (timespec32_t *)&v; 6524 6525 /* 6526 * Ensure no time overflows. Assumes underlying 6527 * filesystem supports at least 32 bits. 6528 * Truncate nsec to usec resolution to allow valid 6529 * compares even if the underlying filesystem truncates. 6530 */ 6531 mtime->tv_sec = time->tv_sec % TIME32_MAX; 6532 mtime->tv_nsec = (time->tv_nsec / 1000) * 1000; 6533 } 6534 6535 static nfsstat4 6536 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6537 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6538 { 6539 struct nfs4_svgetit_arg sarg; 6540 struct nfs4_ntov_table ntov; 6541 6542 bool_t ntov_table_init = FALSE; 6543 struct statvfs64 sb; 6544 nfsstat4 status; 6545 vnode_t *vp; 6546 vattr_t bva, ava, iva, cva, *vap; 6547 vnode_t *dvp; 6548 char *nm = NULL; 6549 uint_t buflen; 6550 bool_t created; 6551 bool_t setsize = FALSE; 6552 len_t reqsize; 6553 int error; 6554 bool_t trunc; 6555 caller_context_t ct; 6556 component4 *component; 6557 bslabel_t *clabel; 6558 struct sockaddr *ca; 6559 char *name = NULL; 6560 fattr4 *fattr = NULL; 6561 6562 ASSERT(*attrset == 0); 6563 6564 sarg.sbp = &sb; 6565 sarg.is_referral = B_FALSE; 6566 6567 dvp = cs->vp; 6568 6569 /* Check if the file system is read only */ 6570 if (rdonly4(req, cs)) 6571 return (NFS4ERR_ROFS); 6572 6573 /* check the label of including directory */ 6574 if (is_system_labeled()) { 6575 ASSERT(req->rq_label != NULL); 6576 clabel = req->rq_label; 6577 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6578 "got client label from request(1)", 6579 struct svc_req *, req); 6580 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6581 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6582 cs->exi)) { 6583 return (NFS4ERR_ACCESS); 6584 } 6585 } 6586 } 6587 6588 if ((args->mode == EXCLUSIVE4 || args->mode == EXCLUSIVE4_1) && 6589 dvp->v_flag & V_XATTRDIR) { 6590 /* prohibit EXCL create of named attributes */ 6591 return (NFS4ERR_INVAL); 6592 } 6593 6594 /* 6595 * Get the last component of path name in nm. cs will reference 6596 * the including directory on success. 6597 */ 6598 component = &args->claim.open_claim4_u.file; 6599 status = utf8_dir_verify(component); 6600 if (status != NFS4_OK) 6601 return (status); 6602 6603 nm = utf8_to_fn(component, &buflen, NULL); 6604 6605 if (nm == NULL) 6606 return (NFS4ERR_RESOURCE); 6607 6608 if (buflen > MAXNAMELEN) { 6609 kmem_free(nm, buflen); 6610 return (NFS4ERR_NAMETOOLONG); 6611 } 6612 6613 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6614 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6615 if (error) { 6616 kmem_free(nm, buflen); 6617 return (puterrno4(error)); 6618 } 6619 6620 if (bva.va_type != VDIR) { 6621 kmem_free(nm, buflen); 6622 return (NFS4ERR_NOTDIR); 6623 } 6624 6625 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6626 6627 switch (args->mode) { 6628 case GUARDED4: 6629 /*FALLTHROUGH*/ 6630 case UNCHECKED4: 6631 case EXCLUSIVE4_1: 6632 nfs4_ntov_table_init(&ntov); 6633 ntov_table_init = TRUE; 6634 6635 if (args->mode == EXCLUSIVE4_1) 6636 fattr = &args->createhow4_u.ch_createboth.cva_attrs; 6637 else 6638 fattr = &args->createhow4_u.createattrs; 6639 6640 status = do_rfs4_set_attrs(attrset, 6641 fattr, 6642 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6643 6644 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6645 sarg.vap->va_type != VREG) { 6646 if (sarg.vap->va_type == VDIR) 6647 status = NFS4ERR_ISDIR; 6648 else if (sarg.vap->va_type == VLNK) 6649 status = NFS4ERR_SYMLINK; 6650 else 6651 status = NFS4ERR_INVAL; 6652 } 6653 6654 if (status != NFS4_OK) { 6655 kmem_free(nm, buflen); 6656 nfs4_ntov_table_free(&ntov, &sarg); 6657 *attrset = 0; 6658 return (status); 6659 } 6660 6661 vap = sarg.vap; 6662 vap->va_type = VREG; 6663 vap->va_mask |= AT_TYPE; 6664 6665 if ((vap->va_mask & AT_MODE) == 0) { 6666 vap->va_mask |= AT_MODE; 6667 vap->va_mode = (mode_t)0600; 6668 } 6669 6670 if (vap->va_mask & AT_SIZE) { 6671 6672 /* Disallow create with a non-zero size */ 6673 6674 if ((reqsize = sarg.vap->va_size) != 0) { 6675 kmem_free(nm, buflen); 6676 nfs4_ntov_table_free(&ntov, &sarg); 6677 *attrset = 0; 6678 return (NFS4ERR_INVAL); 6679 } 6680 setsize = TRUE; 6681 } 6682 if (args->mode == EXCLUSIVE4_1) { 6683 rfs4_verifier_to_mtime( 6684 args->createhow4_u.ch_createboth.cva_verf, 6685 &vap->va_mtime); 6686 /* attrset will be set later */ 6687 fattr->attrmask |= FATTR4_TIME_MODIFY_MASK; 6688 vap->va_mask |= AT_MTIME; 6689 } 6690 break; 6691 6692 case EXCLUSIVE4: 6693 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6694 cva.va_type = VREG; 6695 cva.va_mode = (mode_t)0; 6696 6697 rfs4_verifier_to_mtime(args->createhow4_u.createverf, 6698 &cva.va_mtime); 6699 6700 vap = &cva; 6701 6702 /* 6703 * For EXCL create, attrset is set to the server attr 6704 * used to cache the client's verifier. 6705 */ 6706 *attrset = FATTR4_TIME_MODIFY_MASK; 6707 break; 6708 } 6709 6710 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6711 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6712 MAXPATHLEN + 1); 6713 6714 if (name == NULL) { 6715 kmem_free(nm, buflen); 6716 return (NFS4ERR_SERVERFAULT); 6717 } 6718 6719 status = create_vnode(dvp, name, vap, args->mode, 6720 cs->cr, &vp, &created); 6721 if (nm != name) 6722 kmem_free(name, MAXPATHLEN + 1); 6723 kmem_free(nm, buflen); 6724 6725 if (status != NFS4_OK) { 6726 if (ntov_table_init) 6727 nfs4_ntov_table_free(&ntov, &sarg); 6728 *attrset = 0; 6729 return (status); 6730 } 6731 6732 trunc = (setsize && !created); 6733 6734 if (args->mode != EXCLUSIVE4) { 6735 bitmap4 createmask = fattr->attrmask; 6736 6737 /* 6738 * True verification that object was created with correct 6739 * attrs is impossible. The attrs could have been changed 6740 * immediately after object creation. If attributes did 6741 * not verify, the only recourse for the server is to 6742 * destroy the object. Maybe if some attrs (like gid) 6743 * are set incorrectly, the object should be destroyed; 6744 * however, seems bad as a default policy. Do we really 6745 * want to destroy an object over one of the times not 6746 * verifying correctly? For these reasons, the server 6747 * currently sets bits in attrset for createattrs 6748 * that were set; however, no verification is done. 6749 * 6750 * vmask_to_nmask accounts for vattr bits set on create 6751 * [do_rfs4_set_attrs() only sets resp bits for 6752 * non-vattr/vfs bits.] 6753 * Mask off any bits we set by default so as not to return 6754 * more attrset bits than were requested in createattrs 6755 */ 6756 if (created) { 6757 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6758 *attrset &= createmask; 6759 } else { 6760 /* 6761 * We did not create the vnode (we tried but it 6762 * already existed). In this case, the only createattr 6763 * that the spec allows the server to set is size, 6764 * and even then, it can only be set if it is 0. 6765 */ 6766 *attrset = 0; 6767 if (trunc) 6768 *attrset = FATTR4_SIZE_MASK; 6769 } 6770 } 6771 if (ntov_table_init) 6772 nfs4_ntov_table_free(&ntov, &sarg); 6773 6774 /* 6775 * Get the initial "after" sequence number, if it fails, 6776 * set to zero, time to before. 6777 */ 6778 iva.va_mask = AT_CTIME|AT_SEQ; 6779 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6780 iva.va_seq = 0; 6781 iva.va_ctime = bva.va_ctime; 6782 } 6783 6784 /* 6785 * create_vnode attempts to create the file exclusive, 6786 * if it already exists the VOP_CREATE will fail and 6787 * may not increase va_seq. It is atomic if 6788 * we haven't changed the directory, but if it has changed 6789 * we don't know what changed it. 6790 */ 6791 if (!created) { 6792 if (bva.va_seq && iva.va_seq && 6793 bva.va_seq == iva.va_seq) 6794 cinfo->atomic = TRUE; 6795 else 6796 cinfo->atomic = FALSE; 6797 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6798 } else { 6799 /* 6800 * The entry was created, we need to sync the 6801 * directory metadata. 6802 */ 6803 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6804 6805 /* 6806 * Get "after" change value, if it fails, simply return the 6807 * before value. 6808 */ 6809 ava.va_mask = AT_CTIME|AT_SEQ; 6810 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6811 ava.va_ctime = bva.va_ctime; 6812 ava.va_seq = 0; 6813 } 6814 6815 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6816 6817 /* 6818 * The cinfo->atomic = TRUE only if we have 6819 * non-zero va_seq's, and it has incremented by exactly one 6820 * during the create_vnode and it didn't 6821 * change during the VOP_FSYNC. 6822 */ 6823 if (bva.va_seq && iva.va_seq && ava.va_seq && 6824 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6825 cinfo->atomic = TRUE; 6826 else 6827 cinfo->atomic = FALSE; 6828 } 6829 6830 /* Check for mandatory locking and that the size gets set. */ 6831 cva.va_mask = AT_MODE; 6832 if (setsize) 6833 cva.va_mask |= AT_SIZE; 6834 6835 /* Assume the worst */ 6836 cs->mandlock = TRUE; 6837 6838 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6839 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6840 6841 /* 6842 * Truncate the file if necessary; this would be 6843 * the case for create over an existing file. 6844 */ 6845 6846 if (trunc) { 6847 int in_crit = 0; 6848 rfs4_file_t *fp; 6849 nfs4_srv_t *nsrv4; 6850 bool_t create = FALSE; 6851 6852 /* 6853 * We are writing over an existing file. 6854 * Check to see if we need to recall a delegation. 6855 */ 6856 nsrv4 = nfs4_get_srv(); 6857 rfs4_hold_deleg_policy(nsrv4); 6858 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6859 if (rfs4_check_delegated_byfp(FWRITE, fp, 6860 (reqsize == 0), FALSE, FALSE, &clientid)) { 6861 rfs4_file_rele(fp); 6862 rfs4_rele_deleg_policy(nsrv4); 6863 VN_RELE(vp); 6864 *attrset = 0; 6865 return (NFS4ERR_DELAY); 6866 } 6867 rfs4_file_rele(fp); 6868 } 6869 rfs4_rele_deleg_policy(nsrv4); 6870 6871 if (nbl_need_check(vp)) { 6872 in_crit = 1; 6873 6874 ASSERT(reqsize == 0); 6875 6876 nbl_start_crit(vp, RW_READER); 6877 if (nbl_conflict(vp, NBL_WRITE, 0, 6878 cva.va_size, 0, NULL)) { 6879 in_crit = 0; 6880 nbl_end_crit(vp); 6881 VN_RELE(vp); 6882 *attrset = 0; 6883 return (NFS4ERR_ACCESS); 6884 } 6885 } 6886 ct.cc_sysid = 0; 6887 ct.cc_pid = 0; 6888 ct.cc_caller_id = nfs4_srv_caller_id; 6889 ct.cc_flags = CC_DONTBLOCK; 6890 6891 cva.va_mask = AT_SIZE; 6892 cva.va_size = reqsize; 6893 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6894 if (in_crit) 6895 nbl_end_crit(vp); 6896 } 6897 } 6898 6899 error = makefh4(&cs->fh, vp, cs->exi); 6900 6901 /* 6902 * Force modified data and metadata out to stable storage. 6903 */ 6904 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6905 6906 if (error) { 6907 VN_RELE(vp); 6908 *attrset = 0; 6909 return (puterrno4(error)); 6910 } 6911 6912 /* if parent dir is attrdir, set namedattr fh flag */ 6913 if (dvp->v_flag & V_XATTRDIR) 6914 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6915 6916 if (cs->vp) 6917 VN_RELE(cs->vp); 6918 6919 cs->vp = vp; 6920 6921 /* 6922 * if we did not create the file, we will need to check 6923 * the access bits on the file 6924 */ 6925 6926 if (!created) { 6927 if (setsize) 6928 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6929 status = check_open_access(args->share_access, cs, req); 6930 if (status != NFS4_OK) 6931 *attrset = 0; 6932 } 6933 return (status); 6934 } 6935 6936 /*ARGSUSED*/ 6937 static void 6938 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6939 rfs4_openowner_t *oo, delegreq_t deleg, 6940 uint32_t access, uint32_t deny, 6941 OPEN4res *resp, int deleg_cur) 6942 { 6943 /* XXX Currently not using req */ 6944 rfs4_state_t *sp; 6945 rfs4_file_t *fp; 6946 bool_t screate = TRUE; 6947 bool_t fcreate = TRUE; 6948 uint32_t open_a, share_a; 6949 uint32_t open_d, share_d; 6950 rfs4_deleg_state_t *dsp; 6951 sysid_t sysid; 6952 nfsstat4 status; 6953 caller_context_t ct; 6954 int fflags = 0; 6955 int recall = 0; 6956 int err; 6957 int first_open; 6958 6959 /* get the file struct and hold a lock on it during initial open */ 6960 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6961 if (fp == NULL) { 6962 resp->status = NFS4ERR_RESOURCE; 6963 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6964 return; 6965 } 6966 6967 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6968 if (sp == NULL) { 6969 resp->status = NFS4ERR_RESOURCE; 6970 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6971 /* No need to keep any reference */ 6972 rw_exit(&fp->rf_file_rwlock); 6973 rfs4_file_rele(fp); 6974 return; 6975 } 6976 6977 /* try to get the sysid before continuing */ 6978 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6979 resp->status = status; 6980 rfs4_file_rele(fp); 6981 /* Not a fully formed open; "close" it */ 6982 if (screate == TRUE) 6983 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6984 rfs4_state_rele(sp); 6985 return; 6986 } 6987 6988 /* Calculate the fflags for this OPEN. */ 6989 if (access & OPEN4_SHARE_ACCESS_READ) 6990 fflags |= FREAD; 6991 if (access & OPEN4_SHARE_ACCESS_WRITE) 6992 fflags |= FWRITE; 6993 6994 rfs4_dbe_lock(sp->rs_dbe); 6995 6996 /* 6997 * Calculate the new deny and access mode that this open is adding to 6998 * the file for this open owner; 6999 */ 7000 open_d = (deny & ~sp->rs_open_deny); 7001 open_a = (access & ~sp->rs_open_access); 7002 7003 /* 7004 * Calculate the new share access and share deny modes that this open 7005 * is adding to the file for this open owner; 7006 */ 7007 share_a = (access & ~sp->rs_share_access); 7008 share_d = (deny & ~sp->rs_share_deny); 7009 7010 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 7011 7012 /* 7013 * Check to see the client has already sent an open for this 7014 * open owner on this file with the same share/deny modes. 7015 * If so, we don't need to check for a conflict and we don't 7016 * need to add another shrlock. If not, then we need to 7017 * check for conflicts in deny and access before checking for 7018 * conflicts in delegation. We don't want to recall a 7019 * delegation based on an open that will eventually fail based 7020 * on shares modes. 7021 */ 7022 7023 if (share_a || share_d) { 7024 if ((err = rfs4_share(sp, access, deny)) != 0) { 7025 rfs4_dbe_unlock(sp->rs_dbe); 7026 resp->status = err; 7027 7028 rfs4_file_rele(fp); 7029 /* Not a fully formed open; "close" it */ 7030 if (screate == TRUE) 7031 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7032 rfs4_state_rele(sp); 7033 return; 7034 } 7035 } 7036 7037 rfs4_dbe_lock(fp->rf_dbe); 7038 7039 /* 7040 * Check to see if this file is delegated and if so, if a 7041 * recall needs to be done. 7042 */ 7043 if (rfs4_check_recall(sp, access)) { 7044 rfs4_dbe_unlock(fp->rf_dbe); 7045 rfs4_dbe_unlock(sp->rs_dbe); 7046 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 7047 delay(NFS4_DELEGATION_CONFLICT_DELAY); 7048 rfs4_dbe_lock(sp->rs_dbe); 7049 7050 /* if state closed while lock was dropped */ 7051 if (sp->rs_closed) { 7052 if (share_a || share_d) 7053 (void) rfs4_unshare(sp); 7054 rfs4_dbe_unlock(sp->rs_dbe); 7055 rfs4_file_rele(fp); 7056 /* Not a fully formed open; "close" it */ 7057 if (screate == TRUE) 7058 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7059 rfs4_state_rele(sp); 7060 resp->status = NFS4ERR_OLD_STATEID; 7061 return; 7062 } 7063 7064 rfs4_dbe_lock(fp->rf_dbe); 7065 /* Let's see if the delegation was returned */ 7066 if (rfs4_check_recall(sp, access)) { 7067 rfs4_dbe_unlock(fp->rf_dbe); 7068 if (share_a || share_d) 7069 (void) rfs4_unshare(sp); 7070 rfs4_dbe_unlock(sp->rs_dbe); 7071 rfs4_file_rele(fp); 7072 rfs4_update_lease(sp->rs_owner->ro_client); 7073 7074 /* Not a fully formed open; "close" it */ 7075 if (screate == TRUE) 7076 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7077 rfs4_state_rele(sp); 7078 resp->status = NFS4ERR_DELAY; 7079 return; 7080 } 7081 } 7082 /* 7083 * the share check passed and any delegation conflict has been 7084 * taken care of, now call vop_open. 7085 * if this is the first open then call vop_open with fflags. 7086 * if not, call vn_open_upgrade with just the upgrade flags. 7087 * 7088 * if the file has been opened already, it will have the current 7089 * access mode in the state struct. if it has no share access, then 7090 * this is a new open. 7091 * 7092 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 7093 * call VOP_OPEN(), just do the open upgrade. 7094 */ 7095 if (first_open && !deleg_cur) { 7096 ct.cc_sysid = sysid; 7097 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 7098 ct.cc_caller_id = nfs4_srv_caller_id; 7099 ct.cc_flags = CC_DONTBLOCK; 7100 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 7101 if (err) { 7102 rfs4_dbe_unlock(fp->rf_dbe); 7103 if (share_a || share_d) 7104 (void) rfs4_unshare(sp); 7105 rfs4_dbe_unlock(sp->rs_dbe); 7106 rfs4_file_rele(fp); 7107 7108 /* Not a fully formed open; "close" it */ 7109 if (screate == TRUE) 7110 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7111 rfs4_state_rele(sp); 7112 /* check if a monitor detected a delegation conflict */ 7113 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 7114 resp->status = NFS4ERR_DELAY; 7115 else 7116 resp->status = NFS4ERR_SERVERFAULT; 7117 return; 7118 } 7119 } else { /* open upgrade */ 7120 /* 7121 * calculate the fflags for the new mode that is being added 7122 * by this upgrade. 7123 */ 7124 fflags = 0; 7125 if (open_a & OPEN4_SHARE_ACCESS_READ) 7126 fflags |= FREAD; 7127 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 7128 fflags |= FWRITE; 7129 vn_open_upgrade(cs->vp, fflags); 7130 } 7131 sp->rs_open_access |= access; 7132 sp->rs_open_deny |= deny; 7133 7134 if (open_d & OPEN4_SHARE_DENY_READ) 7135 fp->rf_deny_read++; 7136 if (open_d & OPEN4_SHARE_DENY_WRITE) 7137 fp->rf_deny_write++; 7138 fp->rf_share_deny |= deny; 7139 7140 if (open_a & OPEN4_SHARE_ACCESS_READ) 7141 fp->rf_access_read++; 7142 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 7143 fp->rf_access_write++; 7144 fp->rf_share_access |= access; 7145 7146 /* 7147 * Check for delegation here. if the deleg argument is not 7148 * DELEG_ANY, then this is a reclaim from a client and 7149 * we must honor the delegation requested. If necessary we can 7150 * set the recall flag. 7151 */ 7152 7153 dsp = rfs4_grant_delegation(deleg, sp, &recall); 7154 7155 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 7156 7157 next_stateid(&sp->rs_stateid); 7158 7159 resp->stateid = sp->rs_stateid.stateid; 7160 7161 rfs4_dbe_unlock(fp->rf_dbe); 7162 rfs4_dbe_unlock(sp->rs_dbe); 7163 7164 if (dsp) { 7165 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 7166 rfs4_deleg_state_rele(dsp); 7167 } 7168 7169 rfs4_file_rele(fp); 7170 rfs4_state_rele(sp); 7171 7172 resp->status = NFS4_OK; 7173 } 7174 7175 /*ARGSUSED*/ 7176 static void 7177 rfs4_do_openfh(struct compound_state *cs, struct svc_req *req, OPEN4args *args, 7178 rfs4_openowner_t *oo, OPEN4res *resp) 7179 { 7180 /* cs->vp and cs->fh have been updated by putfh. */ 7181 rfs4_do_open(cs, req, oo, DELEG_ANY, 7182 (args->share_access & 0xff), args->share_deny, resp, 0); 7183 } 7184 7185 /*ARGSUSED*/ 7186 static void 7187 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 7188 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7189 { 7190 change_info4 *cinfo = &resp->cinfo; 7191 bitmap4 *attrset = &resp->attrset; 7192 7193 if (args->opentype == OPEN4_NOCREATE) 7194 resp->status = rfs4_lookupfile(&args->claim.open_claim4_u.file, 7195 req, cs, args->share_access, cinfo); 7196 else { 7197 /* inhibit delegation grants during exclusive create */ 7198 7199 if (args->mode == EXCLUSIVE4) 7200 rfs4_disable_delegation(); 7201 7202 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 7203 oo->ro_client->rc_clientid); 7204 } 7205 7206 if (resp->status == NFS4_OK) { 7207 7208 /* cs->vp cs->fh now reference the desired file */ 7209 7210 rfs4_do_open(cs, req, oo, 7211 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 7212 args->share_access, args->share_deny, resp, 0); 7213 7214 /* 7215 * If rfs4_createfile set attrset, we must 7216 * clear this attrset before the response is copied. 7217 */ 7218 if (resp->status != NFS4_OK && resp->attrset) { 7219 resp->attrset = 0; 7220 } 7221 } 7222 else 7223 *cs->statusp = resp->status; 7224 7225 if (args->mode == EXCLUSIVE4) 7226 rfs4_enable_delegation(); 7227 } 7228 7229 /*ARGSUSED*/ 7230 static void 7231 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 7232 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7233 { 7234 change_info4 *cinfo = &resp->cinfo; 7235 vattr_t va; 7236 vtype_t v_type = cs->vp->v_type; 7237 int error = 0; 7238 7239 /* Verify that we have a regular file */ 7240 if (v_type != VREG) { 7241 if (v_type == VDIR) 7242 resp->status = NFS4ERR_ISDIR; 7243 else if (v_type == VLNK) 7244 resp->status = NFS4ERR_SYMLINK; 7245 else 7246 resp->status = NFS4ERR_INVAL; 7247 return; 7248 } 7249 7250 va.va_mask = AT_MODE|AT_UID; 7251 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7252 if (error) { 7253 resp->status = puterrno4(error); 7254 return; 7255 } 7256 7257 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7258 7259 /* 7260 * Check if we have access to the file, Note the the file 7261 * could have originally been open UNCHECKED or GUARDED 7262 * with mode bits that will now fail, but there is nothing 7263 * we can really do about that except in the case that the 7264 * owner of the file is the one requesting the open. 7265 */ 7266 if (crgetuid(cs->cr) != va.va_uid) { 7267 resp->status = check_open_access(args->share_access, cs, req); 7268 if (resp->status != NFS4_OK) { 7269 return; 7270 } 7271 } 7272 7273 /* 7274 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7275 */ 7276 cinfo->before = 0; 7277 cinfo->after = 0; 7278 cinfo->atomic = FALSE; 7279 7280 rfs4_do_open(cs, req, oo, 7281 NFS4_DELEG4TYPE2REQTYPE(args->claim.open_claim4_u.delegate_type), 7282 args->share_access, args->share_deny, resp, 0); 7283 } 7284 7285 static void 7286 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7287 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7288 { 7289 int error; 7290 nfsstat4 status; 7291 stateid4 stateid = 7292 args->claim.open_claim4_u.delegate_cur_info.delegate_stateid; 7293 rfs4_deleg_state_t *dsp; 7294 7295 /* 7296 * Find the state info from the stateid and confirm that the 7297 * file is delegated. If the state openowner is the same as 7298 * the supplied openowner we're done. If not, get the file 7299 * info from the found state info. Use that file info to 7300 * create the state for this lock owner. Note solaris doen't 7301 * really need the pathname to find the file. We may want to 7302 * lookup the pathname and make sure that the vp exist and 7303 * matches the vp in the file structure. However it is 7304 * possible that the pathname nolonger exists (local process 7305 * unlinks the file), so this may not be that useful. 7306 */ 7307 7308 status = rfs4_get_deleg_state(&stateid, &dsp); 7309 if (status != NFS4_OK) { 7310 resp->status = status; 7311 return; 7312 } 7313 7314 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7315 7316 /* 7317 * New lock owner, create state. Since this was probably called 7318 * in response to a CB_RECALL we set deleg to DELEG_NONE 7319 */ 7320 7321 ASSERT(cs->vp != NULL); 7322 VN_RELE(cs->vp); 7323 VN_HOLD(dsp->rds_finfo->rf_vp); 7324 cs->vp = dsp->rds_finfo->rf_vp; 7325 7326 error = makefh4(&cs->fh, cs->vp, cs->exi); 7327 if (error != 0) { 7328 rfs4_deleg_state_rele(dsp); 7329 *cs->statusp = resp->status = puterrno4(error); 7330 return; 7331 } 7332 7333 /* Mark progress for delegation returns */ 7334 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7335 rfs4_deleg_state_rele(dsp); 7336 rfs4_do_open(cs, req, oo, DELEG_NONE, 7337 args->share_access, args->share_deny, resp, 1); 7338 } 7339 7340 /*ARGSUSED*/ 7341 static void 7342 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7343 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7344 { 7345 /* 7346 * Lookup the pathname, it must already exist since this file 7347 * was delegated. 7348 * 7349 * Find the file and state info for this vp and open owner pair. 7350 * check that they are in fact delegated. 7351 * check that the state access and deny modes are the same. 7352 * 7353 * Return the delgation possibly seting the recall flag. 7354 */ 7355 rfs4_file_t *fp; 7356 rfs4_state_t *sp; 7357 bool_t create = FALSE; 7358 bool_t dcreate = FALSE; 7359 rfs4_deleg_state_t *dsp; 7360 nfsace4 *ace; 7361 7362 /* Note we ignore oflags */ 7363 resp->status = rfs4_lookupfile( 7364 &args->claim.open_claim4_u.file_delegate_prev, 7365 req, cs, args->share_access, &resp->cinfo); 7366 7367 if (resp->status != NFS4_OK) { 7368 return; 7369 } 7370 7371 /* get the file struct and hold a lock on it during initial open */ 7372 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7373 if (fp == NULL) { 7374 resp->status = NFS4ERR_RESOURCE; 7375 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7376 return; 7377 } 7378 7379 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7380 if (sp == NULL) { 7381 resp->status = NFS4ERR_SERVERFAULT; 7382 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7383 rw_exit(&fp->rf_file_rwlock); 7384 rfs4_file_rele(fp); 7385 return; 7386 } 7387 7388 rfs4_dbe_lock(sp->rs_dbe); 7389 rfs4_dbe_lock(fp->rf_dbe); 7390 if (args->share_access != sp->rs_share_access || 7391 args->share_deny != sp->rs_share_deny || 7392 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7393 NFS4_DEBUG(rfs4_debug, 7394 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7395 rfs4_dbe_unlock(fp->rf_dbe); 7396 rfs4_dbe_unlock(sp->rs_dbe); 7397 rfs4_file_rele(fp); 7398 rfs4_state_rele(sp); 7399 resp->status = NFS4ERR_SERVERFAULT; 7400 return; 7401 } 7402 rfs4_dbe_unlock(fp->rf_dbe); 7403 rfs4_dbe_unlock(sp->rs_dbe); 7404 7405 dsp = rfs4_finddeleg(sp, &dcreate); 7406 if (dsp == NULL) { 7407 rfs4_state_rele(sp); 7408 rfs4_file_rele(fp); 7409 resp->status = NFS4ERR_SERVERFAULT; 7410 return; 7411 } 7412 7413 next_stateid(&sp->rs_stateid); 7414 7415 resp->stateid = sp->rs_stateid.stateid; 7416 7417 resp->delegation.delegation_type = dsp->rds_dtype; 7418 7419 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7420 open_read_delegation4 *rv = 7421 &resp->delegation.open_delegation4_u.read; 7422 7423 rv->stateid = dsp->rds_delegid.stateid; 7424 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7425 ace = &rv->permissions; 7426 } else { 7427 open_write_delegation4 *rv = 7428 &resp->delegation.open_delegation4_u.write; 7429 7430 rv->stateid = dsp->rds_delegid.stateid; 7431 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7432 ace = &rv->permissions; 7433 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7434 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7435 } 7436 7437 /* XXX For now */ 7438 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7439 ace->flag = 0; 7440 ace->access_mask = 0; 7441 ace->who.utf8string_len = 0; 7442 ace->who.utf8string_val = 0; 7443 7444 rfs4_deleg_state_rele(dsp); 7445 rfs4_state_rele(sp); 7446 rfs4_file_rele(fp); 7447 } 7448 7449 typedef enum { 7450 NFS4_CHKSEQ_OKAY = 0, 7451 NFS4_CHKSEQ_REPLAY = 1, 7452 NFS4_CHKSEQ_BAD = 2 7453 } rfs4_chkseq_t; 7454 7455 /* 7456 * Generic function for sequence number checks. 7457 */ 7458 static rfs4_chkseq_t 7459 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7460 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7461 { 7462 /* Same sequence ids and matching operations? */ 7463 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7464 if (copyres == TRUE) { 7465 rfs4_free_reply(resop); 7466 rfs4_copy_reply(resop, lastop); 7467 } 7468 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7469 "Replayed SEQID %d\n", seqid)); 7470 return (NFS4_CHKSEQ_REPLAY); 7471 } 7472 7473 /* If the incoming sequence is not the next expected then it is bad */ 7474 if (rqst_seq != seqid + 1) { 7475 if (rqst_seq == seqid) { 7476 NFS4_DEBUG(rfs4_debug, 7477 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7478 "but last op was %d current op is %d\n", 7479 lastop->resop, resop->resop)); 7480 return (NFS4_CHKSEQ_BAD); 7481 } 7482 NFS4_DEBUG(rfs4_debug, 7483 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7484 rqst_seq, seqid)); 7485 return (NFS4_CHKSEQ_BAD); 7486 } 7487 7488 /* Everything okay -- next expected */ 7489 return (NFS4_CHKSEQ_OKAY); 7490 } 7491 7492 7493 static rfs4_chkseq_t 7494 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop, 7495 const compound_state_t *cs) 7496 { 7497 rfs4_chkseq_t rc; 7498 7499 if (rfs4_has_session(cs)) 7500 return (NFS4_CHKSEQ_OKAY); 7501 7502 rfs4_dbe_lock(op->ro_dbe); 7503 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7504 TRUE); 7505 rfs4_dbe_unlock(op->ro_dbe); 7506 7507 if (rc == NFS4_CHKSEQ_OKAY) 7508 rfs4_update_lease(op->ro_client); 7509 7510 return (rc); 7511 } 7512 7513 static rfs4_chkseq_t 7514 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7515 { 7516 rfs4_chkseq_t rc; 7517 7518 rfs4_dbe_lock(op->ro_dbe); 7519 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7520 olo_seqid, resop, FALSE); 7521 rfs4_dbe_unlock(op->ro_dbe); 7522 7523 return (rc); 7524 } 7525 7526 static rfs4_chkseq_t 7527 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7528 { 7529 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7530 7531 rfs4_dbe_lock(lsp->rls_dbe); 7532 if (!lsp->rls_skip_seqid_check) 7533 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7534 resop, TRUE); 7535 rfs4_dbe_unlock(lsp->rls_dbe); 7536 7537 return (rc); 7538 } 7539 7540 static void 7541 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7542 struct svc_req *req, struct compound_state *cs) 7543 { 7544 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7545 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7546 open_owner4 *owner = &args->owner; 7547 open_claim_type4 claim = args->claim.claim; 7548 rfs4_client_t *cp; 7549 rfs4_openowner_t *oo; 7550 bool_t create; 7551 bool_t replay = FALSE; 7552 int can_reclaim; 7553 7554 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7555 OPEN4args *, args); 7556 7557 if (cs->vp == NULL) { 7558 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7559 goto end; 7560 } 7561 7562 /* rfc5661 section 18.16.3 */ 7563 if (rfs4_has_session(cs)) 7564 owner->clientid = cs->client->rc_clientid; 7565 7566 /* 7567 * Need to check clientid and lease expiration first based on 7568 * error ordering and incrementing sequence id. 7569 */ 7570 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7571 if (cp == NULL) { 7572 *cs->statusp = resp->status = 7573 rfs4_check_clientid(&owner->clientid, 0); 7574 goto end; 7575 } 7576 7577 if (rfs4_lease_expired(cp)) { 7578 rfs4_client_close(cp); 7579 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7580 goto end; 7581 } 7582 can_reclaim = cp->rc_can_reclaim; 7583 7584 /* 7585 * Find the open_owner for use from this point forward. Take 7586 * care in updating the sequence id based on the type of error 7587 * being returned. 7588 */ 7589 retry: 7590 create = TRUE; 7591 oo = rfs4_findopenowner(owner, &create, args->seqid); 7592 if (oo == NULL) { 7593 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 7594 rfs4_client_rele(cp); 7595 goto end; 7596 } 7597 7598 /* 7599 * OPEN_CONFIRM must not be implemented in v4.1 7600 */ 7601 if (rfs4_has_session(cs)) { 7602 oo->ro_need_confirm = FALSE; 7603 } 7604 7605 /* Hold off access to the sequence space while the open is done */ 7606 /* Workaround to avoid deadlock */ 7607 if (!rfs4_has_session(cs)) 7608 rfs4_sw_enter(&oo->ro_sw); 7609 7610 /* 7611 * If the open_owner existed before at the server, then check 7612 * the sequence id. 7613 */ 7614 if (!create && !oo->ro_postpone_confirm) { 7615 switch (rfs4_check_open_seqid(args->seqid, oo, resop, cs)) { 7616 case NFS4_CHKSEQ_BAD: 7617 ASSERT(!rfs4_has_session(cs)); 7618 if ((args->seqid > oo->ro_open_seqid) && 7619 oo->ro_need_confirm) { 7620 rfs4_free_opens(oo, TRUE, FALSE); 7621 rfs4_sw_exit(&oo->ro_sw); 7622 rfs4_openowner_rele(oo); 7623 goto retry; 7624 } 7625 resp->status = NFS4ERR_BAD_SEQID; 7626 goto out; 7627 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7628 replay = TRUE; 7629 goto out; 7630 default: 7631 break; 7632 } 7633 7634 /* 7635 * Sequence was ok and open owner exists 7636 * check to see if we have yet to see an 7637 * open_confirm. 7638 */ 7639 if (oo->ro_need_confirm) { 7640 rfs4_free_opens(oo, TRUE, FALSE); 7641 ASSERT(!rfs4_has_session(cs)); 7642 rfs4_sw_exit(&oo->ro_sw); 7643 rfs4_openowner_rele(oo); 7644 goto retry; 7645 } 7646 } 7647 /* Grace only applies to regular-type OPENs */ 7648 if (rfs4_clnt_in_grace(cp) && 7649 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR || 7650 claim == CLAIM_FH)) { 7651 *cs->statusp = resp->status = NFS4ERR_GRACE; 7652 goto out; 7653 } 7654 7655 /* 7656 * If previous state at the server existed then can_reclaim 7657 * will be set. If not reply NFS4ERR_NO_GRACE to the 7658 * client. 7659 */ 7660 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7661 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7662 goto out; 7663 } 7664 7665 7666 /* 7667 * Reject the open if the client has missed the grace period 7668 */ 7669 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7670 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7671 goto out; 7672 } 7673 7674 /* Couple of up-front bookkeeping items */ 7675 if (oo->ro_need_confirm) { 7676 /* 7677 * If this is a reclaim OPEN then we should not ask 7678 * for a confirmation of the open_owner per the 7679 * protocol specification. 7680 */ 7681 if (claim == CLAIM_PREVIOUS) 7682 oo->ro_need_confirm = FALSE; 7683 else 7684 resp->rflags |= OPEN4_RESULT_CONFIRM; 7685 } 7686 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7687 7688 /* 7689 * If there is an unshared filesystem mounted on this vnode, 7690 * do not allow to open/create in this directory. 7691 */ 7692 if (vn_ismntpt(cs->vp)) { 7693 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7694 goto out; 7695 } 7696 7697 /* 7698 * access must READ, WRITE, or BOTH. No access is invalid. 7699 * deny can be READ, WRITE, BOTH, or NONE. 7700 * bits not defined for access/deny are invalid. 7701 */ 7702 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7703 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7704 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7705 *cs->statusp = resp->status = NFS4ERR_INVAL; 7706 goto out; 7707 } 7708 7709 7710 /* 7711 * make sure attrset is zero before response is built. 7712 */ 7713 resp->attrset = 0; 7714 7715 switch (claim) { 7716 case CLAIM_NULL: 7717 rfs4_do_opennull(cs, req, args, oo, resp); 7718 break; 7719 case CLAIM_PREVIOUS: 7720 rfs4_do_openprev(cs, req, args, oo, resp); 7721 break; 7722 case CLAIM_DELEGATE_CUR: 7723 rfs4_do_opendelcur(cs, req, args, oo, resp); 7724 break; 7725 case CLAIM_DELEGATE_PREV: 7726 rfs4_do_opendelprev(cs, req, args, oo, resp); 7727 break; 7728 case CLAIM_FH: 7729 rfs4_do_openfh(cs, req, args, oo, resp); 7730 break; 7731 default: 7732 resp->status = NFS4ERR_INVAL; 7733 break; 7734 } 7735 7736 out: 7737 rfs4_client_rele(cp); 7738 7739 /* Catch sequence id handling here to make it a little easier */ 7740 switch (resp->status) { 7741 case NFS4ERR_BADXDR: 7742 case NFS4ERR_BAD_SEQID: 7743 case NFS4ERR_BAD_STATEID: 7744 case NFS4ERR_NOFILEHANDLE: 7745 case NFS4ERR_RESOURCE: 7746 case NFS4ERR_STALE_CLIENTID: 7747 case NFS4ERR_STALE_STATEID: 7748 /* 7749 * The protocol states that if any of these errors are 7750 * being returned, the sequence id should not be 7751 * incremented. Any other return requires an 7752 * increment. 7753 */ 7754 break; 7755 default: 7756 /* Always update the lease in this case */ 7757 rfs4_update_lease(oo->ro_client); 7758 7759 /* Regular response - copy the result */ 7760 if (!replay) 7761 rfs4_update_open_resp(oo, resop, &cs->fh); 7762 7763 /* 7764 * REPLAY case: Only if the previous response was OK 7765 * do we copy the filehandle. If not OK, no 7766 * filehandle to copy. 7767 */ 7768 if (replay == TRUE && 7769 resp->status == NFS4_OK && 7770 oo->ro_reply_fh.nfs_fh4_val) { 7771 /* 7772 * If this is a replay, we must restore the 7773 * current filehandle/vp to that of what was 7774 * returned originally. Try our best to do 7775 * it. 7776 */ 7777 nfs_fh4_fmt_t *fh_fmtp = 7778 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7779 7780 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7781 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7782 7783 if (cs->exi == NULL) { 7784 resp->status = NFS4ERR_STALE; 7785 goto finish; 7786 } 7787 7788 VN_RELE(cs->vp); 7789 7790 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7791 &resp->status); 7792 7793 if (cs->vp == NULL) 7794 goto finish; 7795 7796 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7797 } 7798 7799 /* 7800 * If this was a replay, no need to update the 7801 * sequence id. If the open_owner was not created on 7802 * this pass, then update. The first use of an 7803 * open_owner will not bump the sequence id. 7804 */ 7805 if (replay == FALSE && !create) 7806 rfs4_update_open_sequence(oo); 7807 /* 7808 * If the client is receiving an error and the 7809 * open_owner needs to be confirmed, there is no way 7810 * to notify the client of this fact ignoring the fact 7811 * that the server has no method of returning a 7812 * stateid to confirm. Therefore, the server needs to 7813 * mark this open_owner in a way as to avoid the 7814 * sequence id checking the next time the client uses 7815 * this open_owner. 7816 */ 7817 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7818 oo->ro_postpone_confirm = TRUE; 7819 /* 7820 * If OK response then clear the postpone flag and 7821 * reset the sequence id to keep in sync with the 7822 * client. 7823 */ 7824 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7825 oo->ro_postpone_confirm = FALSE; 7826 oo->ro_open_seqid = args->seqid; 7827 } 7828 break; 7829 } 7830 7831 finish: 7832 *cs->statusp = resp->status; 7833 7834 if (!rfs4_has_session(cs)) 7835 rfs4_sw_exit(&oo->ro_sw); 7836 rfs4_openowner_rele(oo); 7837 7838 end: 7839 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7840 OPEN4res *, resp); 7841 } 7842 7843 /*ARGSUSED*/ 7844 void 7845 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7846 struct svc_req *req, struct compound_state *cs) 7847 { 7848 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7849 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7850 rfs4_state_t *sp; 7851 nfsstat4 status; 7852 7853 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7854 OPEN_CONFIRM4args *, args); 7855 7856 ASSERT(!rfs4_has_session(cs)); 7857 7858 if (cs->vp == NULL) { 7859 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7860 goto out; 7861 } 7862 7863 if (cs->vp->v_type != VREG) { 7864 *cs->statusp = resp->status = 7865 cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL; 7866 return; 7867 } 7868 7869 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7870 if (status != NFS4_OK) { 7871 *cs->statusp = resp->status = status; 7872 goto out; 7873 } 7874 7875 /* Ensure specified filehandle matches */ 7876 if (cs->vp != sp->rs_finfo->rf_vp) { 7877 rfs4_state_rele(sp); 7878 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7879 goto out; 7880 } 7881 7882 /* hold off other access to open_owner while we tinker */ 7883 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7884 7885 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid, cs)) { 7886 case NFS4_CHECK_STATEID_OKAY: 7887 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7888 resop, cs) != 0) { 7889 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7890 break; 7891 } 7892 /* 7893 * If it is the appropriate stateid and determined to 7894 * be "OKAY" then this means that the stateid does not 7895 * need to be confirmed and the client is in error for 7896 * sending an OPEN_CONFIRM. 7897 */ 7898 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7899 break; 7900 case NFS4_CHECK_STATEID_OLD: 7901 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7902 break; 7903 case NFS4_CHECK_STATEID_BAD: 7904 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7905 break; 7906 case NFS4_CHECK_STATEID_EXPIRED: 7907 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7908 break; 7909 case NFS4_CHECK_STATEID_CLOSED: 7910 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7911 break; 7912 case NFS4_CHECK_STATEID_REPLAY: 7913 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7914 resop, cs)) { 7915 case NFS4_CHKSEQ_OKAY: 7916 /* 7917 * This is replayed stateid; if seqid matches 7918 * next expected, then client is using wrong seqid. 7919 */ 7920 /* fall through */ 7921 case NFS4_CHKSEQ_BAD: 7922 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7923 break; 7924 case NFS4_CHKSEQ_REPLAY: 7925 /* 7926 * Note this case is the duplicate case so 7927 * resp->status is already set. 7928 */ 7929 *cs->statusp = resp->status; 7930 rfs4_update_lease(sp->rs_owner->ro_client); 7931 break; 7932 } 7933 break; 7934 case NFS4_CHECK_STATEID_UNCONFIRMED: 7935 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7936 resop, cs) != NFS4_CHKSEQ_OKAY) { 7937 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7938 break; 7939 } 7940 *cs->statusp = resp->status = NFS4_OK; 7941 7942 next_stateid(&sp->rs_stateid); 7943 resp->open_stateid = sp->rs_stateid.stateid; 7944 sp->rs_owner->ro_need_confirm = FALSE; 7945 rfs4_update_lease(sp->rs_owner->ro_client); 7946 rfs4_update_open_sequence(sp->rs_owner); 7947 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7948 break; 7949 default: 7950 ASSERT(FALSE); 7951 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7952 break; 7953 } 7954 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7955 rfs4_state_rele(sp); 7956 7957 out: 7958 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7959 OPEN_CONFIRM4res *, resp); 7960 } 7961 7962 /*ARGSUSED*/ 7963 void 7964 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7965 struct svc_req *req, struct compound_state *cs) 7966 { 7967 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7968 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7969 uint32_t access = args->share_access; 7970 uint32_t deny = args->share_deny; 7971 nfsstat4 status; 7972 rfs4_state_t *sp; 7973 rfs4_file_t *fp; 7974 int fflags = 0; 7975 7976 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7977 OPEN_DOWNGRADE4args *, args); 7978 7979 if (cs->vp == NULL) { 7980 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7981 goto out; 7982 } 7983 7984 if (cs->vp->v_type != VREG) { 7985 *cs->statusp = resp->status = NFS4ERR_INVAL; 7986 return; 7987 } 7988 7989 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7990 if (status != NFS4_OK) { 7991 *cs->statusp = resp->status = status; 7992 goto out; 7993 } 7994 7995 /* Ensure specified filehandle matches */ 7996 if (cs->vp != sp->rs_finfo->rf_vp) { 7997 rfs4_state_rele(sp); 7998 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7999 goto out; 8000 } 8001 8002 /* hold off other access to open_owner while we tinker */ 8003 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8004 8005 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid, cs)) { 8006 case NFS4_CHECK_STATEID_OKAY: 8007 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8008 resop, cs) != NFS4_CHKSEQ_OKAY) { 8009 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8010 goto end; 8011 } 8012 break; 8013 case NFS4_CHECK_STATEID_OLD: 8014 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8015 goto end; 8016 case NFS4_CHECK_STATEID_BAD: 8017 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8018 goto end; 8019 case NFS4_CHECK_STATEID_EXPIRED: 8020 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8021 goto end; 8022 case NFS4_CHECK_STATEID_CLOSED: 8023 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8024 goto end; 8025 case NFS4_CHECK_STATEID_UNCONFIRMED: 8026 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8027 goto end; 8028 case NFS4_CHECK_STATEID_REPLAY: 8029 ASSERT(!rfs4_has_session(cs)); 8030 8031 /* Check the sequence id for the open owner */ 8032 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8033 resop, cs)) { 8034 case NFS4_CHKSEQ_OKAY: 8035 /* 8036 * This is replayed stateid; if seqid matches 8037 * next expected, then client is using wrong seqid. 8038 */ 8039 /* fall through */ 8040 case NFS4_CHKSEQ_BAD: 8041 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8042 goto end; 8043 case NFS4_CHKSEQ_REPLAY: 8044 /* 8045 * Note this case is the duplicate case so 8046 * resp->status is already set. 8047 */ 8048 *cs->statusp = resp->status; 8049 rfs4_update_lease(sp->rs_owner->ro_client); 8050 goto end; 8051 } 8052 break; 8053 default: 8054 ASSERT(FALSE); 8055 break; 8056 } 8057 8058 rfs4_dbe_lock(sp->rs_dbe); 8059 /* 8060 * Check that the new access modes and deny modes are valid. 8061 * Check that no invalid bits are set. 8062 */ 8063 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 8064 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 8065 *cs->statusp = resp->status = NFS4ERR_INVAL; 8066 rfs4_update_open_sequence(sp->rs_owner); 8067 rfs4_dbe_unlock(sp->rs_dbe); 8068 goto end; 8069 } 8070 8071 /* 8072 * The new modes must be a subset of the current modes and 8073 * the access must specify at least one mode. To test that 8074 * the new mode is a subset of the current modes we bitwise 8075 * AND them together and check that the result equals the new 8076 * mode. For example: 8077 * New mode, access == R and current mode, sp->rs_open_access == RW 8078 * access & sp->rs_open_access == R == access, so the new access mode 8079 * is valid. Consider access == RW, sp->rs_open_access = R 8080 * access & sp->rs_open_access == R != access, so the new access mode 8081 * is invalid. 8082 */ 8083 if ((access & sp->rs_open_access) != access || 8084 (deny & sp->rs_open_deny) != deny || 8085 (access & 8086 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 8087 *cs->statusp = resp->status = NFS4ERR_INVAL; 8088 rfs4_update_open_sequence(sp->rs_owner); 8089 rfs4_dbe_unlock(sp->rs_dbe); 8090 goto end; 8091 } 8092 8093 /* 8094 * Release any share locks associated with this stateID. 8095 * Strictly speaking, this violates the spec because the 8096 * spec effectively requires that open downgrade be atomic. 8097 * At present, fs_shrlock does not have this capability. 8098 */ 8099 (void) rfs4_unshare(sp); 8100 8101 status = rfs4_share(sp, access, deny); 8102 if (status != NFS4_OK) { 8103 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8104 rfs4_update_open_sequence(sp->rs_owner); 8105 rfs4_dbe_unlock(sp->rs_dbe); 8106 goto end; 8107 } 8108 8109 fp = sp->rs_finfo; 8110 rfs4_dbe_lock(fp->rf_dbe); 8111 8112 /* 8113 * If the current mode has deny read and the new mode 8114 * does not, decrement the number of deny read mode bits 8115 * and if it goes to zero turn off the deny read bit 8116 * on the file. 8117 */ 8118 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 8119 (deny & OPEN4_SHARE_DENY_READ) == 0) { 8120 fp->rf_deny_read--; 8121 if (fp->rf_deny_read == 0) 8122 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8123 } 8124 8125 /* 8126 * If the current mode has deny write and the new mode 8127 * does not, decrement the number of deny write mode bits 8128 * and if it goes to zero turn off the deny write bit 8129 * on the file. 8130 */ 8131 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 8132 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 8133 fp->rf_deny_write--; 8134 if (fp->rf_deny_write == 0) 8135 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8136 } 8137 8138 /* 8139 * If the current mode has access read and the new mode 8140 * does not, decrement the number of access read mode bits 8141 * and if it goes to zero turn off the access read bit 8142 * on the file. set fflags to FREAD for the call to 8143 * vn_open_downgrade(). 8144 */ 8145 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 8146 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 8147 fp->rf_access_read--; 8148 if (fp->rf_access_read == 0) 8149 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8150 fflags |= FREAD; 8151 } 8152 8153 /* 8154 * If the current mode has access write and the new mode 8155 * does not, decrement the number of access write mode bits 8156 * and if it goes to zero turn off the access write bit 8157 * on the file. set fflags to FWRITE for the call to 8158 * vn_open_downgrade(). 8159 */ 8160 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 8161 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8162 fp->rf_access_write--; 8163 if (fp->rf_access_write == 0) 8164 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 8165 fflags |= FWRITE; 8166 } 8167 8168 /* Check that the file is still accessible */ 8169 ASSERT(fp->rf_share_access); 8170 8171 rfs4_dbe_unlock(fp->rf_dbe); 8172 8173 /* now set the new open access and deny modes */ 8174 sp->rs_open_access = access; 8175 sp->rs_open_deny = deny; 8176 8177 /* 8178 * we successfully downgraded the share lock, now we need to downgrade 8179 * the open. it is possible that the downgrade was only for a deny 8180 * mode and we have nothing else to do. 8181 */ 8182 if ((fflags & (FREAD|FWRITE)) != 0) 8183 vn_open_downgrade(cs->vp, fflags); 8184 8185 /* Update the stateid */ 8186 next_stateid(&sp->rs_stateid); 8187 resp->open_stateid = sp->rs_stateid.stateid; 8188 8189 rfs4_dbe_unlock(sp->rs_dbe); 8190 8191 *cs->statusp = resp->status = NFS4_OK; 8192 /* Update the lease */ 8193 rfs4_update_lease(sp->rs_owner->ro_client); 8194 /* And the sequence */ 8195 rfs4_update_open_sequence(sp->rs_owner); 8196 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8197 8198 end: 8199 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8200 rfs4_state_rele(sp); 8201 out: 8202 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 8203 OPEN_DOWNGRADE4res *, resp); 8204 } 8205 8206 static void * 8207 memstr(const void *s1, const char *s2, size_t n) 8208 { 8209 size_t l = strlen(s2); 8210 char *p = (char *)s1; 8211 8212 while (n >= l) { 8213 if (bcmp(p, s2, l) == 0) 8214 return (p); 8215 p++; 8216 n--; 8217 } 8218 8219 return (NULL); 8220 } 8221 8222 /* 8223 * The logic behind this function is detailed in the NFSv4 RFC in the 8224 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 8225 * that section for explicit guidance to server behavior for 8226 * SETCLIENTID. 8227 */ 8228 void 8229 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 8230 struct svc_req *req, struct compound_state *cs) 8231 { 8232 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 8233 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 8234 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 8235 rfs4_clntip_t *ci; 8236 bool_t create; 8237 char *addr, *netid; 8238 int len; 8239 8240 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 8241 SETCLIENTID4args *, args); 8242 retry: 8243 newcp = cp_confirmed = cp_unconfirmed = NULL; 8244 8245 /* 8246 * Save the caller's IP address 8247 */ 8248 args->client.cl_addr = 8249 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 8250 8251 /* 8252 * Record if it is a Solaris client that cannot handle referrals. 8253 */ 8254 if (memstr(args->client.id_val, "Solaris", args->client.id_len) && 8255 !memstr(args->client.id_val, "+referrals", args->client.id_len)) { 8256 /* Add a "yes, it's downrev" record */ 8257 create = TRUE; 8258 ci = rfs4_find_clntip(args->client.cl_addr, &create); 8259 ASSERT(ci != NULL); 8260 rfs4_dbe_rele(ci->ri_dbe); 8261 } else { 8262 /* Remove any previous record */ 8263 rfs4_invalidate_clntip(args->client.cl_addr); 8264 } 8265 8266 /* 8267 * In search of an EXISTING client matching the incoming 8268 * request to establish a new client identifier at the server 8269 */ 8270 create = TRUE; 8271 cp = rfs4_findclient(&args->client, &create, NULL); 8272 8273 /* Should never happen */ 8274 ASSERT(cp != NULL); 8275 8276 if (cp == NULL) { 8277 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8278 goto out; 8279 } 8280 8281 /* 8282 * Easiest case. Client identifier is newly created and is 8283 * unconfirmed. Also note that for this case, no other 8284 * entries exist for the client identifier. Nothing else to 8285 * check. Just setup the response and respond. 8286 */ 8287 if (create) { 8288 *cs->statusp = res->status = NFS4_OK; 8289 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 8290 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8291 cp->rc_confirm_verf; 8292 /* Setup callback information; CB_NULL confirmation later */ 8293 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 8294 8295 rfs4_client_rele(cp); 8296 goto out; 8297 } 8298 8299 /* 8300 * An existing, confirmed client may exist but it may not have 8301 * been active for at least one lease period. If so, then 8302 * "close" the client and create a new client identifier 8303 */ 8304 if (rfs4_lease_expired(cp)) { 8305 rfs4_client_close(cp); 8306 goto retry; 8307 } 8308 8309 if (cp->rc_need_confirm == TRUE) 8310 cp_unconfirmed = cp; 8311 else 8312 cp_confirmed = cp; 8313 8314 cp = NULL; 8315 8316 /* 8317 * We have a confirmed client, now check for an 8318 * unconfimred entry 8319 */ 8320 if (cp_confirmed) { 8321 /* If creds don't match then client identifier is inuse */ 8322 if (!creds_ok(&cp_confirmed->rc_cr_set, req, cs)) { 8323 rfs4_cbinfo_t *cbp; 8324 /* 8325 * Some one else has established this client 8326 * id. Try and say * who they are. We will use 8327 * the call back address supplied by * the 8328 * first client. 8329 */ 8330 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8331 8332 addr = netid = NULL; 8333 8334 cbp = &cp_confirmed->rc_cbinfo; 8335 if (cbp->cb_callback.cb_location.r_addr && 8336 cbp->cb_callback.cb_location.r_netid) { 8337 cb_client4 *cbcp = &cbp->cb_callback; 8338 8339 len = strlen(cbcp->cb_location.r_addr)+1; 8340 addr = kmem_alloc(len, KM_SLEEP); 8341 bcopy(cbcp->cb_location.r_addr, addr, len); 8342 len = strlen(cbcp->cb_location.r_netid)+1; 8343 netid = kmem_alloc(len, KM_SLEEP); 8344 bcopy(cbcp->cb_location.r_netid, netid, len); 8345 } 8346 8347 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8348 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8349 8350 rfs4_client_rele(cp_confirmed); 8351 } 8352 8353 /* 8354 * Confirmed, creds match, and verifier matches; must 8355 * be an update of the callback info 8356 */ 8357 if (cp_confirmed->rc_nfs_client.verifier == 8358 args->client.verifier) { 8359 /* Setup callback information */ 8360 rfs4_client_setcb(cp_confirmed, &args->callback, 8361 args->callback_ident); 8362 8363 /* everything okay -- move ahead */ 8364 *cs->statusp = res->status = NFS4_OK; 8365 res->SETCLIENTID4res_u.resok4.clientid = 8366 cp_confirmed->rc_clientid; 8367 8368 /* update the confirm_verifier and return it */ 8369 rfs4_client_scv_next(cp_confirmed); 8370 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8371 cp_confirmed->rc_confirm_verf; 8372 8373 rfs4_client_rele(cp_confirmed); 8374 goto out; 8375 } 8376 8377 /* 8378 * Creds match but the verifier doesn't. Must search 8379 * for an unconfirmed client that would be replaced by 8380 * this request. 8381 */ 8382 create = FALSE; 8383 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8384 cp_confirmed); 8385 } 8386 8387 /* 8388 * At this point, we have taken care of the brand new client 8389 * struct, INUSE case, update of an existing, and confirmed 8390 * client struct. 8391 */ 8392 8393 /* 8394 * check to see if things have changed while we originally 8395 * picked up the client struct. If they have, then return and 8396 * retry the processing of this SETCLIENTID request. 8397 */ 8398 if (cp_unconfirmed) { 8399 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8400 if (!cp_unconfirmed->rc_need_confirm) { 8401 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8402 rfs4_client_rele(cp_unconfirmed); 8403 if (cp_confirmed) 8404 rfs4_client_rele(cp_confirmed); 8405 goto retry; 8406 } 8407 /* do away with the old unconfirmed one */ 8408 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8409 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8410 rfs4_client_rele(cp_unconfirmed); 8411 cp_unconfirmed = NULL; 8412 } 8413 8414 /* 8415 * This search will temporarily hide the confirmed client 8416 * struct while a new client struct is created as the 8417 * unconfirmed one. 8418 */ 8419 create = TRUE; 8420 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8421 8422 ASSERT(newcp != NULL); 8423 8424 if (newcp == NULL) { 8425 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8426 rfs4_client_rele(cp_confirmed); 8427 goto out; 8428 } 8429 8430 /* 8431 * If one was not created, then a similar request must be in 8432 * process so release and start over with this one 8433 */ 8434 if (create != TRUE) { 8435 rfs4_client_rele(newcp); 8436 if (cp_confirmed) 8437 rfs4_client_rele(cp_confirmed); 8438 goto retry; 8439 } 8440 8441 *cs->statusp = res->status = NFS4_OK; 8442 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8443 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8444 newcp->rc_confirm_verf; 8445 /* Setup callback information; CB_NULL confirmation later */ 8446 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8447 8448 newcp->rc_cp_confirmed = cp_confirmed; 8449 8450 rfs4_client_rele(newcp); 8451 8452 out: 8453 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8454 SETCLIENTID4res *, res); 8455 } 8456 8457 /*ARGSUSED*/ 8458 void 8459 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8460 struct svc_req *req, struct compound_state *cs) 8461 { 8462 SETCLIENTID_CONFIRM4args *args = 8463 &argop->nfs_argop4_u.opsetclientid_confirm; 8464 SETCLIENTID_CONFIRM4res *res = 8465 &resop->nfs_resop4_u.opsetclientid_confirm; 8466 rfs4_client_t *cp, *cptoclose = NULL; 8467 nfs4_srv_t *nsrv4; 8468 8469 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8470 struct compound_state *, cs, 8471 SETCLIENTID_CONFIRM4args *, args); 8472 8473 nsrv4 = nfs4_get_srv(); 8474 *cs->statusp = res->status = NFS4_OK; 8475 8476 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8477 8478 if (cp == NULL) { 8479 *cs->statusp = res->status = 8480 rfs4_check_clientid(&args->clientid, 1); 8481 goto out; 8482 } 8483 8484 if (!creds_ok(&cp->rc_cr_set, req, cs)) { 8485 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8486 rfs4_client_rele(cp); 8487 goto out; 8488 } 8489 8490 /* If the verifier doesn't match, the record doesn't match */ 8491 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8492 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8493 rfs4_client_rele(cp); 8494 goto out; 8495 } 8496 8497 rfs4_dbe_lock(cp->rc_dbe); 8498 cp->rc_need_confirm = FALSE; 8499 if (cp->rc_cp_confirmed) { 8500 cptoclose = cp->rc_cp_confirmed; 8501 cptoclose->rc_ss_remove = 1; 8502 cp->rc_cp_confirmed = NULL; 8503 } 8504 8505 /* 8506 * Update the client's associated server instance, if it's changed 8507 * since the client was created. 8508 */ 8509 if (rfs4_servinst(cp) != nsrv4->nfs4_cur_servinst) 8510 rfs4_servinst_assign(nsrv4, cp, nsrv4->nfs4_cur_servinst); 8511 8512 /* 8513 * Record clientid in stable storage. 8514 * Must be done after server instance has been assigned. 8515 */ 8516 rfs4_ss_clid(nsrv4, cp); 8517 8518 rfs4_dbe_unlock(cp->rc_dbe); 8519 8520 if (cptoclose) 8521 /* don't need to rele, client_close does it */ 8522 rfs4_client_close(cptoclose); 8523 8524 /* If needed, initiate CB_NULL call for callback path */ 8525 rfs4_deleg_cb_check(cp); 8526 rfs4_update_lease(cp); 8527 8528 /* 8529 * Check to see if client can perform reclaims 8530 */ 8531 rfs4_ss_chkclid(nsrv4, cp); 8532 8533 rfs4_client_rele(cp); 8534 8535 out: 8536 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8537 struct compound_state *, cs, 8538 SETCLIENTID_CONFIRM4 *, res); 8539 } 8540 8541 8542 /*ARGSUSED*/ 8543 void 8544 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8545 struct svc_req *req, struct compound_state *cs) 8546 { 8547 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8548 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8549 rfs4_state_t *sp; 8550 nfsstat4 status; 8551 8552 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8553 CLOSE4args *, args); 8554 8555 if (cs->vp == NULL) { 8556 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8557 goto out; 8558 } 8559 8560 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8561 if (status != NFS4_OK) { 8562 *cs->statusp = resp->status = status; 8563 goto out; 8564 } 8565 8566 /* Ensure specified filehandle matches */ 8567 if (cs->vp != sp->rs_finfo->rf_vp) { 8568 rfs4_state_rele(sp); 8569 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8570 goto out; 8571 } 8572 8573 /* hold off other access to open_owner while we tinker */ 8574 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8575 8576 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid, cs)) { 8577 case NFS4_CHECK_STATEID_OKAY: 8578 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8579 resop, cs) != NFS4_CHKSEQ_OKAY) { 8580 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8581 goto end; 8582 } 8583 break; 8584 case NFS4_CHECK_STATEID_OLD: 8585 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8586 goto end; 8587 case NFS4_CHECK_STATEID_BAD: 8588 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8589 goto end; 8590 case NFS4_CHECK_STATEID_EXPIRED: 8591 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8592 goto end; 8593 case NFS4_CHECK_STATEID_CLOSED: 8594 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8595 goto end; 8596 case NFS4_CHECK_STATEID_UNCONFIRMED: 8597 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8598 goto end; 8599 case NFS4_CHECK_STATEID_REPLAY: 8600 ASSERT(!rfs4_has_session(cs)); 8601 8602 /* Check the sequence id for the open owner */ 8603 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8604 resop, cs)) { 8605 case NFS4_CHKSEQ_OKAY: 8606 /* 8607 * This is replayed stateid; if seqid matches 8608 * next expected, then client is using wrong seqid. 8609 */ 8610 /* FALL THROUGH */ 8611 case NFS4_CHKSEQ_BAD: 8612 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8613 goto end; 8614 case NFS4_CHKSEQ_REPLAY: 8615 /* 8616 * Note this case is the duplicate case so 8617 * resp->status is already set. 8618 */ 8619 *cs->statusp = resp->status; 8620 rfs4_update_lease(sp->rs_owner->ro_client); 8621 goto end; 8622 } 8623 break; 8624 default: 8625 ASSERT(FALSE); 8626 break; 8627 } 8628 8629 rfs4_dbe_lock(sp->rs_dbe); 8630 8631 /* Update the stateid. */ 8632 next_stateid(&sp->rs_stateid); 8633 resp->open_stateid = sp->rs_stateid.stateid; 8634 8635 rfs4_dbe_unlock(sp->rs_dbe); 8636 8637 rfs4_update_lease(sp->rs_owner->ro_client); 8638 rfs4_update_open_sequence(sp->rs_owner); 8639 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8640 8641 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8642 8643 *cs->statusp = resp->status = status; 8644 8645 end: 8646 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8647 rfs4_state_rele(sp); 8648 out: 8649 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8650 CLOSE4res *, resp); 8651 } 8652 8653 /* 8654 * Manage the counts on the file struct and close all file locks 8655 */ 8656 /*ARGSUSED*/ 8657 void 8658 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8659 bool_t close_of_client) 8660 { 8661 rfs4_file_t *fp = sp->rs_finfo; 8662 rfs4_lo_state_t *lsp; 8663 int fflags = 0; 8664 8665 /* 8666 * If this call is part of the larger closing down of client 8667 * state then it is just easier to release all locks 8668 * associated with this client instead of going through each 8669 * individual file and cleaning locks there. 8670 */ 8671 if (close_of_client) { 8672 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8673 !list_is_empty(&sp->rs_lostatelist) && 8674 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8675 /* Is the PxFS kernel module loaded? */ 8676 if (lm_remove_file_locks != NULL) { 8677 int new_sysid; 8678 8679 /* Encode the cluster nodeid in new sysid */ 8680 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8681 lm_set_nlmid_flk(&new_sysid); 8682 8683 /* 8684 * This PxFS routine removes file locks for a 8685 * client over all nodes of a cluster. 8686 */ 8687 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8688 "lm_remove_file_locks(sysid=0x%x)\n", 8689 new_sysid)); 8690 (*lm_remove_file_locks)(new_sysid); 8691 } else { 8692 struct flock64 flk; 8693 8694 /* Release all locks for this client */ 8695 flk.l_type = F_UNLKSYS; 8696 flk.l_whence = 0; 8697 flk.l_start = 0; 8698 flk.l_len = 0; 8699 flk.l_sysid = 8700 sp->rs_owner->ro_client->rc_sysidt; 8701 flk.l_pid = 0; 8702 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8703 &flk, F_REMOTELOCK | FREAD | FWRITE, 8704 (u_offset_t)0, NULL, CRED(), NULL); 8705 } 8706 8707 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8708 } 8709 } 8710 8711 /* 8712 * Release all locks on this file by this lock owner or at 8713 * least mark the locks as having been released 8714 */ 8715 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8716 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8717 lsp->rls_locks_cleaned = TRUE; 8718 8719 /* Was this already taken care of above? */ 8720 if (!close_of_client && 8721 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8722 (void) cleanlocks(sp->rs_finfo->rf_vp, 8723 lsp->rls_locker->rl_pid, 8724 lsp->rls_locker->rl_client->rc_sysidt); 8725 } 8726 8727 /* 8728 * Release any shrlocks associated with this open state ID. 8729 * This must be done before the rfs4_state gets marked closed. 8730 */ 8731 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8732 (void) rfs4_unshare(sp); 8733 8734 if (sp->rs_open_access) { 8735 rfs4_dbe_lock(fp->rf_dbe); 8736 8737 /* 8738 * Decrement the count for each access and deny bit that this 8739 * state has contributed to the file. 8740 * If the file counts go to zero 8741 * clear the appropriate bit in the appropriate mask. 8742 */ 8743 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8744 fp->rf_access_read--; 8745 fflags |= FREAD; 8746 if (fp->rf_access_read == 0) 8747 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8748 } 8749 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8750 fp->rf_access_write--; 8751 fflags |= FWRITE; 8752 if (fp->rf_access_write == 0) 8753 fp->rf_share_access &= 8754 ~OPEN4_SHARE_ACCESS_WRITE; 8755 } 8756 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8757 fp->rf_deny_read--; 8758 if (fp->rf_deny_read == 0) 8759 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8760 } 8761 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8762 fp->rf_deny_write--; 8763 if (fp->rf_deny_write == 0) 8764 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8765 } 8766 8767 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8768 8769 rfs4_dbe_unlock(fp->rf_dbe); 8770 8771 sp->rs_open_access = 0; 8772 sp->rs_open_deny = 0; 8773 } 8774 } 8775 8776 /* 8777 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8778 */ 8779 static nfsstat4 8780 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8781 { 8782 rfs4_lockowner_t *lo; 8783 rfs4_client_t *cp; 8784 uint32_t len; 8785 8786 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8787 if (lo != NULL) { 8788 cp = lo->rl_client; 8789 if (rfs4_lease_expired(cp)) { 8790 rfs4_lockowner_rele(lo); 8791 rfs4_dbe_hold(cp->rc_dbe); 8792 rfs4_client_close(cp); 8793 return (NFS4ERR_EXPIRED); 8794 } 8795 dp->owner.clientid = lo->rl_owner.clientid; 8796 len = lo->rl_owner.owner_len; 8797 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8798 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8799 dp->owner.owner_len = len; 8800 rfs4_lockowner_rele(lo); 8801 goto finish; 8802 } 8803 8804 /* 8805 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8806 * of the client id contain the boot time for a NFS4 lock. So we 8807 * fabricate and identity by setting clientid to the sysid, and 8808 * the lock owner to the pid. 8809 */ 8810 dp->owner.clientid = flk->l_sysid; 8811 len = sizeof (pid_t); 8812 dp->owner.owner_len = len; 8813 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8814 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8815 finish: 8816 dp->offset = flk->l_start; 8817 dp->length = flk->l_len; 8818 8819 if (flk->l_type == F_RDLCK) 8820 dp->locktype = READ_LT; 8821 else if (flk->l_type == F_WRLCK) 8822 dp->locktype = WRITE_LT; 8823 else 8824 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8825 8826 return (NFS4_OK); 8827 } 8828 8829 /* 8830 * The NFSv4.0 LOCK operation does not support the blocking lock (at the 8831 * NFSv4.0 protocol level) so the client needs to resend the LOCK request in a 8832 * case the lock is denied by the NFSv4.0 server. NFSv4.0 clients are prepared 8833 * for that (obviously); they are sending the LOCK requests with some delays 8834 * between the attempts. See nfs4frlock() and nfs4_block_and_wait() for the 8835 * locking and delay implementation at the client side. 8836 * 8837 * To make the life of the clients easier, the NFSv4.0 server tries to do some 8838 * fast retries on its own (the for loop below) in a hope the lock will be 8839 * available soon. And if not, the client won't need to resend the LOCK 8840 * requests so fast to check the lock availability. This basically saves some 8841 * network traffic and tries to make sure the client gets the lock ASAP. 8842 */ 8843 static int 8844 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8845 { 8846 int error; 8847 struct flock64 flk; 8848 int i; 8849 clock_t delaytime; 8850 int cmd; 8851 int spin_cnt = 0; 8852 8853 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8854 retry: 8855 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8856 8857 for (i = 0; i < rfs4_maxlock_tries; i++) { 8858 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8859 error = VOP_FRLOCK(vp, cmd, 8860 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8861 8862 if (error != EAGAIN && error != EACCES) 8863 break; 8864 8865 if (i < rfs4_maxlock_tries - 1) { 8866 delay(delaytime); 8867 delaytime *= 2; 8868 } 8869 } 8870 8871 if (error == EAGAIN || error == EACCES) { 8872 /* Get the owner of the lock */ 8873 flk = *flock; 8874 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8875 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 0, NULL, cred, 8876 NULL) == 0) { 8877 /* 8878 * There's a race inherent in the current VOP_FRLOCK 8879 * design where: 8880 * a: "other guy" takes a lock that conflicts with a 8881 * lock we want 8882 * b: we attempt to take our lock (non-blocking) and 8883 * the attempt fails. 8884 * c: "other guy" releases the conflicting lock 8885 * d: we ask what lock conflicts with the lock we want, 8886 * getting F_UNLCK (no lock blocks us) 8887 * 8888 * If we retry the non-blocking lock attempt in this 8889 * case (restart at step 'b') there's some possibility 8890 * that many such attempts might fail. However a test 8891 * designed to actually provoke this race shows that 8892 * the vast majority of cases require no retry, and 8893 * only a few took as many as three retries. Here's 8894 * the test outcome: 8895 * 8896 * number of retries how many times we needed 8897 * that many retries 8898 * 0 79461 8899 * 1 862 8900 * 2 49 8901 * 3 5 8902 * 8903 * Given those empirical results, we arbitrarily limit 8904 * the retry count to ten. 8905 * 8906 * If we actually make to ten retries and give up, 8907 * nothing catastrophic happens, but we're unable to 8908 * return the information about the conflicting lock to 8909 * the NFS client. That's an acceptable trade off vs. 8910 * letting this retry loop run forever. 8911 */ 8912 if (flk.l_type == F_UNLCK) { 8913 if (spin_cnt++ < 10) { 8914 /* No longer locked, retry */ 8915 goto retry; 8916 } 8917 } else { 8918 *flock = flk; 8919 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8920 F_GETLK, &flk); 8921 } 8922 } 8923 } 8924 8925 return (error); 8926 } 8927 8928 /*ARGSUSED*/ 8929 static nfsstat4 8930 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8931 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8932 { 8933 nfsstat4 status; 8934 rfs4_lockowner_t *lo = lsp->rls_locker; 8935 rfs4_state_t *sp = lsp->rls_state; 8936 struct flock64 flock; 8937 int16_t ltype; 8938 int flag; 8939 int error; 8940 sysid_t sysid; 8941 LOCK4res *lres; 8942 vnode_t *vp; 8943 8944 if (rfs4_lease_expired(lo->rl_client)) { 8945 return (NFS4ERR_EXPIRED); 8946 } 8947 8948 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8949 return (status); 8950 8951 /* Check for zero length. To lock to end of file use all ones for V4 */ 8952 if (length == 0) 8953 return (NFS4ERR_INVAL); 8954 else if (length == (length4)(~0)) 8955 length = 0; /* Posix to end of file */ 8956 8957 retry: 8958 rfs4_dbe_lock(sp->rs_dbe); 8959 if (sp->rs_closed == TRUE) { 8960 rfs4_dbe_unlock(sp->rs_dbe); 8961 return (NFS4ERR_OLD_STATEID); 8962 } 8963 8964 if (resop->resop != OP_LOCKU) { 8965 switch (locktype) { 8966 case READ_LT: 8967 case READW_LT: 8968 if ((sp->rs_share_access 8969 & OPEN4_SHARE_ACCESS_READ) == 0) { 8970 rfs4_dbe_unlock(sp->rs_dbe); 8971 8972 return (NFS4ERR_OPENMODE); 8973 } 8974 ltype = F_RDLCK; 8975 break; 8976 case WRITE_LT: 8977 case WRITEW_LT: 8978 if ((sp->rs_share_access 8979 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8980 rfs4_dbe_unlock(sp->rs_dbe); 8981 8982 return (NFS4ERR_OPENMODE); 8983 } 8984 ltype = F_WRLCK; 8985 break; 8986 } 8987 } else 8988 ltype = F_UNLCK; 8989 8990 flock.l_type = ltype; 8991 flock.l_whence = 0; /* SEEK_SET */ 8992 flock.l_start = offset; 8993 flock.l_len = length; 8994 flock.l_sysid = sysid; 8995 flock.l_pid = lsp->rls_locker->rl_pid; 8996 8997 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8998 if (flock.l_len < 0 || flock.l_start < 0) { 8999 rfs4_dbe_unlock(sp->rs_dbe); 9000 return (NFS4ERR_INVAL); 9001 } 9002 9003 /* 9004 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 9005 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 9006 */ 9007 flag = (int)sp->rs_share_access | F_REMOTELOCK; 9008 9009 vp = sp->rs_finfo->rf_vp; 9010 VN_HOLD(vp); 9011 9012 /* 9013 * We need to unlock sp before we call the underlying filesystem to 9014 * acquire the file lock. 9015 */ 9016 rfs4_dbe_unlock(sp->rs_dbe); 9017 9018 error = setlock(vp, &flock, flag, cred); 9019 9020 /* 9021 * Make sure the file is still open. In a case the file was closed in 9022 * the meantime, clean the lock we acquired using the setlock() call 9023 * above, and return the appropriate error. 9024 */ 9025 rfs4_dbe_lock(sp->rs_dbe); 9026 if (sp->rs_closed == TRUE) { 9027 cleanlocks(vp, lsp->rls_locker->rl_pid, sysid); 9028 rfs4_dbe_unlock(sp->rs_dbe); 9029 9030 VN_RELE(vp); 9031 9032 return (NFS4ERR_OLD_STATEID); 9033 } 9034 rfs4_dbe_unlock(sp->rs_dbe); 9035 9036 VN_RELE(vp); 9037 9038 if (error == 0) { 9039 rfs4_dbe_lock(lsp->rls_dbe); 9040 next_stateid(&lsp->rls_lockid); 9041 rfs4_dbe_unlock(lsp->rls_dbe); 9042 } 9043 9044 /* 9045 * N.B. We map error values to nfsv4 errors. This is differrent 9046 * than puterrno4 routine. 9047 */ 9048 switch (error) { 9049 case 0: 9050 status = NFS4_OK; 9051 break; 9052 case EAGAIN: 9053 case EACCES: /* Old value */ 9054 /* Can only get here if op is OP_LOCK */ 9055 ASSERT(resop->resop == OP_LOCK); 9056 lres = &resop->nfs_resop4_u.oplock; 9057 status = NFS4ERR_DENIED; 9058 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 9059 == NFS4ERR_EXPIRED) 9060 goto retry; 9061 break; 9062 case ENOLCK: 9063 status = NFS4ERR_DELAY; 9064 break; 9065 case EOVERFLOW: 9066 status = NFS4ERR_INVAL; 9067 break; 9068 case EINVAL: 9069 status = NFS4ERR_NOTSUPP; 9070 break; 9071 default: 9072 status = NFS4ERR_SERVERFAULT; 9073 break; 9074 } 9075 9076 return (status); 9077 } 9078 9079 /*ARGSUSED*/ 9080 void 9081 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 9082 struct svc_req *req, struct compound_state *cs) 9083 { 9084 LOCK4args *args = &argop->nfs_argop4_u.oplock; 9085 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 9086 nfsstat4 status; 9087 stateid4 *stateid; 9088 rfs4_lockowner_t *lo; 9089 rfs4_client_t *cp; 9090 rfs4_state_t *sp = NULL; 9091 rfs4_lo_state_t *lsp = NULL; 9092 bool_t ls_sw_held = FALSE; 9093 bool_t create = TRUE; 9094 bool_t lcreate = TRUE; 9095 bool_t dup_lock = FALSE; 9096 int rc; 9097 9098 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 9099 LOCK4args *, args); 9100 9101 if (cs->vp == NULL) { 9102 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9103 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9104 cs, LOCK4res *, resp); 9105 return; 9106 } 9107 9108 if (args->locker.new_lock_owner) { 9109 /* Create a new lockowner for this instance */ 9110 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 9111 9112 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 9113 9114 stateid = &olo->open_stateid; 9115 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 9116 if (status != NFS4_OK) { 9117 NFS4_DEBUG(rfs4_debug, 9118 (CE_NOTE, "Get state failed in lock %d", status)); 9119 *cs->statusp = resp->status = status; 9120 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9121 cs, LOCK4res *, resp); 9122 return; 9123 } 9124 9125 /* Ensure specified filehandle matches */ 9126 if (cs->vp != sp->rs_finfo->rf_vp) { 9127 rfs4_state_rele(sp); 9128 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9129 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9130 cs, LOCK4res *, resp); 9131 return; 9132 } 9133 9134 /* hold off other access to open_owner while we tinker */ 9135 rfs4_sw_enter(&sp->rs_owner->ro_sw); 9136 9137 switch (rc = rfs4_check_stateid_seqid(sp, stateid, cs)) { 9138 case NFS4_CHECK_STATEID_OLD: 9139 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9140 goto end; 9141 case NFS4_CHECK_STATEID_BAD: 9142 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9143 goto end; 9144 case NFS4_CHECK_STATEID_EXPIRED: 9145 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9146 goto end; 9147 case NFS4_CHECK_STATEID_UNCONFIRMED: 9148 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9149 goto end; 9150 case NFS4_CHECK_STATEID_CLOSED: 9151 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9152 goto end; 9153 case NFS4_CHECK_STATEID_OKAY: 9154 if (rfs4_has_session(cs)) 9155 break; 9156 /* FALLTHROUGH */ 9157 case NFS4_CHECK_STATEID_REPLAY: 9158 ASSERT(!rfs4_has_session(cs)); 9159 9160 switch (rfs4_check_olo_seqid(olo->open_seqid, 9161 sp->rs_owner, resop)) { 9162 case NFS4_CHKSEQ_OKAY: 9163 if (rc == NFS4_CHECK_STATEID_OKAY) 9164 break; 9165 /* 9166 * This is replayed stateid; if seqid 9167 * matches next expected, then client 9168 * is using wrong seqid. 9169 */ 9170 /* FALLTHROUGH */ 9171 case NFS4_CHKSEQ_BAD: 9172 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9173 goto end; 9174 case NFS4_CHKSEQ_REPLAY: 9175 /* This is a duplicate LOCK request */ 9176 dup_lock = TRUE; 9177 9178 /* 9179 * For a duplicate we do not want to 9180 * create a new lockowner as it should 9181 * already exist. 9182 * Turn off the lockowner create flag. 9183 */ 9184 lcreate = FALSE; 9185 } 9186 break; 9187 } 9188 9189 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 9190 if (lo == NULL) { 9191 NFS4_DEBUG(rfs4_debug, 9192 (CE_NOTE, "rfs4_op_lock: no lock owner")); 9193 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 9194 goto end; 9195 } 9196 9197 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 9198 if (lsp == NULL) { 9199 rfs4_update_lease(sp->rs_owner->ro_client); 9200 /* 9201 * Only update theh open_seqid if this is not 9202 * a duplicate request 9203 */ 9204 if (dup_lock == FALSE) { 9205 rfs4_update_open_sequence(sp->rs_owner); 9206 } 9207 9208 NFS4_DEBUG(rfs4_debug, 9209 (CE_NOTE, "rfs4_op_lock: no state")); 9210 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 9211 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9212 rfs4_lockowner_rele(lo); 9213 goto end; 9214 } 9215 9216 /* 9217 * This is the new_lock_owner branch and the client is 9218 * supposed to be associating a new lock_owner with 9219 * the open file at this point. If we find that a 9220 * lock_owner/state association already exists and a 9221 * successful LOCK request was returned to the client, 9222 * an error is returned to the client since this is 9223 * not appropriate. The client should be using the 9224 * existing lock_owner branch. 9225 */ 9226 if (!rfs4_has_session(cs) && !dup_lock && !create) { 9227 if (lsp->rls_lock_completed == TRUE) { 9228 *cs->statusp = 9229 resp->status = NFS4ERR_BAD_SEQID; 9230 rfs4_lockowner_rele(lo); 9231 goto end; 9232 } 9233 } 9234 9235 rfs4_update_lease(sp->rs_owner->ro_client); 9236 9237 /* 9238 * Only update theh open_seqid if this is not 9239 * a duplicate request 9240 */ 9241 if (dup_lock == FALSE) { 9242 rfs4_update_open_sequence(sp->rs_owner); 9243 } 9244 9245 /* 9246 * If this is a duplicate lock request, just copy the 9247 * previously saved reply and return. 9248 */ 9249 if (dup_lock == TRUE) { 9250 /* verify that lock_seqid's match */ 9251 if (lsp->rls_seqid != olo->lock_seqid) { 9252 NFS4_DEBUG(rfs4_debug, 9253 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 9254 "lsp->seqid=%d old->seqid=%d", 9255 lsp->rls_seqid, olo->lock_seqid)); 9256 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9257 } else { 9258 rfs4_copy_reply(resop, &lsp->rls_reply); 9259 /* 9260 * Make sure to copy the just 9261 * retrieved reply status into the 9262 * overall compound status 9263 */ 9264 *cs->statusp = resp->status; 9265 } 9266 rfs4_lockowner_rele(lo); 9267 goto end; 9268 } 9269 9270 rfs4_dbe_lock(lsp->rls_dbe); 9271 9272 /* Make sure to update the lock sequence id */ 9273 lsp->rls_seqid = olo->lock_seqid; 9274 9275 NFS4_DEBUG(rfs4_debug, 9276 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 9277 9278 /* 9279 * This is used to signify the newly created lockowner 9280 * stateid and its sequence number. The checks for 9281 * sequence number and increment don't occur on the 9282 * very first lock request for a lockowner. 9283 */ 9284 lsp->rls_skip_seqid_check = TRUE; 9285 9286 /* hold off other access to lsp while we tinker */ 9287 rfs4_sw_enter(&lsp->rls_sw); 9288 ls_sw_held = TRUE; 9289 9290 rfs4_dbe_unlock(lsp->rls_dbe); 9291 9292 rfs4_lockowner_rele(lo); 9293 } else { 9294 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 9295 /* get lsp and hold the lock on the underlying file struct */ 9296 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 9297 != NFS4_OK) { 9298 *cs->statusp = resp->status = status; 9299 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9300 cs, LOCK4res *, resp); 9301 return; 9302 } 9303 create = FALSE; /* We didn't create lsp */ 9304 9305 /* Ensure specified filehandle matches */ 9306 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9307 rfs4_lo_state_rele(lsp, TRUE); 9308 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9309 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9310 cs, LOCK4res *, resp); 9311 return; 9312 } 9313 9314 /* hold off other access to lsp while we tinker */ 9315 rfs4_sw_enter(&lsp->rls_sw); 9316 ls_sw_held = TRUE; 9317 9318 switch (rfs4_check_lo_stateid_seqid(lsp, stateid, cs)) { 9319 /* 9320 * The stateid looks like it was okay (expected to be 9321 * the next one) 9322 */ 9323 case NFS4_CHECK_STATEID_OKAY: 9324 if (rfs4_has_session(cs)) 9325 break; 9326 9327 /* 9328 * The sequence id is now checked. Determine 9329 * if this is a replay or if it is in the 9330 * expected (next) sequence. In the case of a 9331 * replay, there are two replay conditions 9332 * that may occur. The first is the normal 9333 * condition where a LOCK is done with a 9334 * NFS4_OK response and the stateid is 9335 * updated. That case is handled below when 9336 * the stateid is identified as a REPLAY. The 9337 * second is the case where an error is 9338 * returned, like NFS4ERR_DENIED, and the 9339 * sequence number is updated but the stateid 9340 * is not updated. This second case is dealt 9341 * with here. So it may seem odd that the 9342 * stateid is okay but the sequence id is a 9343 * replay but it is okay. 9344 */ 9345 switch (rfs4_check_lock_seqid( 9346 args->locker.locker4_u.lock_owner.lock_seqid, 9347 lsp, resop)) { 9348 case NFS4_CHKSEQ_REPLAY: 9349 if (resp->status != NFS4_OK) { 9350 /* 9351 * Here is our replay and need 9352 * to verify that the last 9353 * response was an error. 9354 */ 9355 *cs->statusp = resp->status; 9356 goto end; 9357 } 9358 /* 9359 * This is done since the sequence id 9360 * looked like a replay but it didn't 9361 * pass our check so a BAD_SEQID is 9362 * returned as a result. 9363 */ 9364 /*FALLTHROUGH*/ 9365 case NFS4_CHKSEQ_BAD: 9366 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9367 goto end; 9368 case NFS4_CHKSEQ_OKAY: 9369 /* Everything looks okay move ahead */ 9370 break; 9371 } 9372 break; 9373 case NFS4_CHECK_STATEID_OLD: 9374 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9375 goto end; 9376 case NFS4_CHECK_STATEID_BAD: 9377 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9378 goto end; 9379 case NFS4_CHECK_STATEID_EXPIRED: 9380 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9381 goto end; 9382 case NFS4_CHECK_STATEID_CLOSED: 9383 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9384 goto end; 9385 case NFS4_CHECK_STATEID_REPLAY: 9386 ASSERT(!rfs4_has_session(cs)); 9387 9388 switch (rfs4_check_lock_seqid( 9389 args->locker.locker4_u.lock_owner.lock_seqid, 9390 lsp, resop)) { 9391 case NFS4_CHKSEQ_OKAY: 9392 /* 9393 * This is a replayed stateid; if 9394 * seqid matches the next expected, 9395 * then client is using wrong seqid. 9396 */ 9397 case NFS4_CHKSEQ_BAD: 9398 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9399 goto end; 9400 case NFS4_CHKSEQ_REPLAY: 9401 rfs4_update_lease(lsp->rls_locker->rl_client); 9402 *cs->statusp = status = resp->status; 9403 goto end; 9404 } 9405 break; 9406 default: 9407 ASSERT(FALSE); 9408 break; 9409 } 9410 9411 rfs4_update_lock_sequence(lsp); 9412 rfs4_update_lease(lsp->rls_locker->rl_client); 9413 } 9414 9415 /* 9416 * NFS4 only allows locking on regular files, so 9417 * verify type of object. 9418 */ 9419 if (cs->vp->v_type != VREG) { 9420 if (cs->vp->v_type == VDIR) 9421 status = NFS4ERR_ISDIR; 9422 else 9423 status = NFS4ERR_INVAL; 9424 goto out; 9425 } 9426 9427 cp = lsp->rls_state->rs_owner->ro_client; 9428 9429 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9430 status = NFS4ERR_GRACE; 9431 goto out; 9432 } 9433 9434 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9435 status = NFS4ERR_NO_GRACE; 9436 goto out; 9437 } 9438 9439 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9440 status = NFS4ERR_NO_GRACE; 9441 goto out; 9442 } 9443 9444 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9445 cs->deleg = TRUE; 9446 9447 status = rfs4_do_lock(lsp, args->locktype, 9448 args->offset, args->length, cs->cr, resop); 9449 9450 out: 9451 lsp->rls_skip_seqid_check = FALSE; 9452 9453 *cs->statusp = resp->status = status; 9454 9455 if (status == NFS4_OK) { 9456 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9457 lsp->rls_lock_completed = TRUE; 9458 } 9459 /* 9460 * Only update the "OPEN" response here if this was a new 9461 * lock_owner 9462 */ 9463 if (sp) 9464 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9465 9466 rfs4_update_lock_resp(lsp, resop); 9467 9468 end: 9469 if (lsp) { 9470 if (ls_sw_held) 9471 rfs4_sw_exit(&lsp->rls_sw); 9472 /* 9473 * If an sp obtained, then the lsp does not represent 9474 * a lock on the file struct. 9475 */ 9476 if (sp != NULL) 9477 rfs4_lo_state_rele(lsp, FALSE); 9478 else 9479 rfs4_lo_state_rele(lsp, TRUE); 9480 } 9481 if (sp) { 9482 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9483 rfs4_state_rele(sp); 9484 } 9485 9486 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9487 LOCK4res *, resp); 9488 } 9489 9490 /* free function for LOCK/LOCKT */ 9491 static void 9492 lock_denied_free(nfs_resop4 *resop) 9493 { 9494 LOCK4denied *dp = NULL; 9495 9496 switch (resop->resop) { 9497 case OP_LOCK: 9498 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9499 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9500 break; 9501 case OP_LOCKT: 9502 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9503 dp = &resop->nfs_resop4_u.oplockt.denied; 9504 break; 9505 default: 9506 break; 9507 } 9508 9509 if (dp) 9510 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9511 } 9512 9513 /*ARGSUSED*/ 9514 void 9515 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9516 struct svc_req *req, struct compound_state *cs) 9517 { 9518 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9519 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9520 nfsstat4 status; 9521 stateid4 *stateid = &args->lock_stateid; 9522 rfs4_lo_state_t *lsp; 9523 9524 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9525 LOCKU4args *, args); 9526 9527 if (cs->vp == NULL) { 9528 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9529 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9530 LOCKU4res *, resp); 9531 return; 9532 } 9533 9534 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9535 *cs->statusp = resp->status = status; 9536 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9537 LOCKU4res *, resp); 9538 return; 9539 } 9540 9541 /* Ensure specified filehandle matches */ 9542 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9543 rfs4_lo_state_rele(lsp, TRUE); 9544 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9545 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9546 LOCKU4res *, resp); 9547 return; 9548 } 9549 9550 /* hold off other access to lsp while we tinker */ 9551 rfs4_sw_enter(&lsp->rls_sw); 9552 9553 switch (rfs4_check_lo_stateid_seqid(lsp, stateid, cs)) { 9554 case NFS4_CHECK_STATEID_OKAY: 9555 if (rfs4_has_session(cs)) 9556 break; 9557 9558 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9559 != NFS4_CHKSEQ_OKAY) { 9560 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9561 goto end; 9562 } 9563 break; 9564 case NFS4_CHECK_STATEID_OLD: 9565 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9566 goto end; 9567 case NFS4_CHECK_STATEID_BAD: 9568 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9569 goto end; 9570 case NFS4_CHECK_STATEID_EXPIRED: 9571 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9572 goto end; 9573 case NFS4_CHECK_STATEID_CLOSED: 9574 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9575 goto end; 9576 case NFS4_CHECK_STATEID_REPLAY: 9577 ASSERT(!rfs4_has_session(cs)); 9578 9579 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9580 case NFS4_CHKSEQ_OKAY: 9581 /* 9582 * This is a replayed stateid; if 9583 * seqid matches the next expected, 9584 * then client is using wrong seqid. 9585 */ 9586 case NFS4_CHKSEQ_BAD: 9587 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9588 goto end; 9589 case NFS4_CHKSEQ_REPLAY: 9590 rfs4_update_lease(lsp->rls_locker->rl_client); 9591 *cs->statusp = status = resp->status; 9592 goto end; 9593 } 9594 break; 9595 default: 9596 ASSERT(FALSE); 9597 break; 9598 } 9599 9600 rfs4_update_lock_sequence(lsp); 9601 rfs4_update_lease(lsp->rls_locker->rl_client); 9602 9603 /* 9604 * NFS4 only allows locking on regular files, so 9605 * verify type of object. 9606 */ 9607 if (cs->vp->v_type != VREG) { 9608 if (cs->vp->v_type == VDIR) 9609 status = NFS4ERR_ISDIR; 9610 else 9611 status = NFS4ERR_INVAL; 9612 goto out; 9613 } 9614 9615 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9616 status = NFS4ERR_GRACE; 9617 goto out; 9618 } 9619 9620 status = rfs4_do_lock(lsp, args->locktype, 9621 args->offset, args->length, cs->cr, resop); 9622 9623 out: 9624 *cs->statusp = resp->status = status; 9625 9626 if (status == NFS4_OK) 9627 resp->lock_stateid = lsp->rls_lockid.stateid; 9628 9629 rfs4_update_lock_resp(lsp, resop); 9630 9631 end: 9632 rfs4_sw_exit(&lsp->rls_sw); 9633 rfs4_lo_state_rele(lsp, TRUE); 9634 9635 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9636 LOCKU4res *, resp); 9637 } 9638 9639 /* 9640 * LOCKT is a best effort routine, the client can not be guaranteed that 9641 * the status return is still in effect by the time the reply is received. 9642 * They are numerous race conditions in this routine, but we are not required 9643 * and can not be accurate. 9644 */ 9645 /*ARGSUSED*/ 9646 void 9647 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9648 struct svc_req *req, struct compound_state *cs) 9649 { 9650 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9651 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9652 rfs4_lockowner_t *lo; 9653 rfs4_client_t *cp; 9654 bool_t create = FALSE; 9655 struct flock64 flk; 9656 int error; 9657 int flag = FREAD | FWRITE; 9658 int ltype; 9659 length4 posix_length; 9660 sysid_t sysid; 9661 pid_t pid; 9662 9663 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9664 LOCKT4args *, args); 9665 9666 if (cs->vp == NULL) { 9667 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9668 goto out; 9669 } 9670 9671 /* 9672 * NFS4 only allows locking on regular files, so 9673 * verify type of object. 9674 */ 9675 if (cs->vp->v_type != VREG) { 9676 if (cs->vp->v_type == VDIR) 9677 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9678 else 9679 *cs->statusp = resp->status = NFS4ERR_INVAL; 9680 goto out; 9681 } 9682 9683 /* 9684 * Check out the clientid to ensure the server knows about it 9685 * so that we correctly inform the client of a server reboot. 9686 */ 9687 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9688 == NULL) { 9689 *cs->statusp = resp->status = 9690 rfs4_check_clientid(&args->owner.clientid, 0); 9691 goto out; 9692 } 9693 if (rfs4_lease_expired(cp)) { 9694 rfs4_client_close(cp); 9695 /* 9696 * Protocol doesn't allow returning NFS4ERR_STALE as 9697 * other operations do on this check so STALE_CLIENTID 9698 * is returned instead 9699 */ 9700 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9701 goto out; 9702 } 9703 9704 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9705 *cs->statusp = resp->status = NFS4ERR_GRACE; 9706 rfs4_client_rele(cp); 9707 goto out; 9708 } 9709 rfs4_client_rele(cp); 9710 9711 resp->status = NFS4_OK; 9712 9713 switch (args->locktype) { 9714 case READ_LT: 9715 case READW_LT: 9716 ltype = F_RDLCK; 9717 break; 9718 case WRITE_LT: 9719 case WRITEW_LT: 9720 ltype = F_WRLCK; 9721 break; 9722 } 9723 9724 posix_length = args->length; 9725 /* Check for zero length. To lock to end of file use all ones for V4 */ 9726 if (posix_length == 0) { 9727 *cs->statusp = resp->status = NFS4ERR_INVAL; 9728 goto out; 9729 } else if (posix_length == (length4)(~0)) { 9730 posix_length = 0; /* Posix to end of file */ 9731 } 9732 9733 /* Find or create a lockowner */ 9734 lo = rfs4_findlockowner(&args->owner, &create); 9735 9736 if (lo) { 9737 pid = lo->rl_pid; 9738 if ((resp->status = 9739 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9740 goto err; 9741 } else { 9742 pid = 0; 9743 sysid = lockt_sysid; 9744 } 9745 retry: 9746 flk.l_type = ltype; 9747 flk.l_whence = 0; /* SEEK_SET */ 9748 flk.l_start = args->offset; 9749 flk.l_len = posix_length; 9750 flk.l_sysid = sysid; 9751 flk.l_pid = pid; 9752 flag |= F_REMOTELOCK; 9753 9754 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9755 9756 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9757 if (flk.l_len < 0 || flk.l_start < 0) { 9758 resp->status = NFS4ERR_INVAL; 9759 goto err; 9760 } 9761 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9762 NULL, cs->cr, NULL); 9763 9764 /* 9765 * N.B. We map error values to nfsv4 errors. This is differrent 9766 * than puterrno4 routine. 9767 */ 9768 switch (error) { 9769 case 0: 9770 if (flk.l_type == F_UNLCK) 9771 resp->status = NFS4_OK; 9772 else { 9773 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9774 goto retry; 9775 resp->status = NFS4ERR_DENIED; 9776 } 9777 break; 9778 case EOVERFLOW: 9779 resp->status = NFS4ERR_INVAL; 9780 break; 9781 case EINVAL: 9782 resp->status = NFS4ERR_NOTSUPP; 9783 break; 9784 default: 9785 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9786 error); 9787 resp->status = NFS4ERR_SERVERFAULT; 9788 break; 9789 } 9790 9791 err: 9792 if (lo) 9793 rfs4_lockowner_rele(lo); 9794 *cs->statusp = resp->status; 9795 out: 9796 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9797 LOCKT4res *, resp); 9798 } 9799 9800 int 9801 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9802 { 9803 int err; 9804 int cmd; 9805 vnode_t *vp; 9806 struct shrlock shr; 9807 struct shr_locowner shr_loco; 9808 int fflags = 0; 9809 9810 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9811 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9812 9813 if (sp->rs_closed) 9814 return (NFS4ERR_OLD_STATEID); 9815 9816 vp = sp->rs_finfo->rf_vp; 9817 ASSERT(vp); 9818 9819 shr.s_access = shr.s_deny = 0; 9820 9821 if (access & OPEN4_SHARE_ACCESS_READ) { 9822 fflags |= FREAD; 9823 shr.s_access |= F_RDACC; 9824 } 9825 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9826 fflags |= FWRITE; 9827 shr.s_access |= F_WRACC; 9828 } 9829 ASSERT(shr.s_access); 9830 9831 if (deny & OPEN4_SHARE_DENY_READ) 9832 shr.s_deny |= F_RDDNY; 9833 if (deny & OPEN4_SHARE_DENY_WRITE) 9834 shr.s_deny |= F_WRDNY; 9835 9836 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9837 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9838 shr_loco.sl_pid = shr.s_pid; 9839 shr_loco.sl_id = shr.s_sysid; 9840 shr.s_owner = (caddr_t)&shr_loco; 9841 shr.s_own_len = sizeof (shr_loco); 9842 9843 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9844 9845 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9846 if (err != 0) { 9847 if (err == EAGAIN) 9848 err = NFS4ERR_SHARE_DENIED; 9849 else 9850 err = puterrno4(err); 9851 return (err); 9852 } 9853 9854 sp->rs_share_access |= access; 9855 sp->rs_share_deny |= deny; 9856 9857 return (0); 9858 } 9859 9860 int 9861 rfs4_unshare(rfs4_state_t *sp) 9862 { 9863 int err; 9864 struct shrlock shr; 9865 struct shr_locowner shr_loco; 9866 9867 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9868 9869 if (sp->rs_closed || sp->rs_share_access == 0) 9870 return (0); 9871 9872 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9873 ASSERT(sp->rs_finfo->rf_vp); 9874 9875 shr.s_access = shr.s_deny = 0; 9876 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9877 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9878 shr_loco.sl_pid = shr.s_pid; 9879 shr_loco.sl_id = shr.s_sysid; 9880 shr.s_owner = (caddr_t)&shr_loco; 9881 shr.s_own_len = sizeof (shr_loco); 9882 9883 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9884 NULL); 9885 if (err != 0) { 9886 err = puterrno4(err); 9887 return (err); 9888 } 9889 9890 sp->rs_share_access = 0; 9891 sp->rs_share_deny = 0; 9892 9893 return (0); 9894 9895 } 9896 9897 static int 9898 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9899 { 9900 struct clist *wcl; 9901 count4 count = rok->data_len; 9902 int wlist_len; 9903 9904 wcl = args->wlist; 9905 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9906 return (FALSE); 9907 } 9908 wcl = args->wlist; 9909 rok->wlist_len = wlist_len; 9910 rok->wlist = wcl; 9911 return (TRUE); 9912 } 9913 9914 /* tunable to disable server referrals */ 9915 int rfs4_no_referrals = 0; 9916 9917 /* 9918 * Find an NFS record in reparse point data. 9919 * Returns 0 for success and <0 or an errno value on failure. 9920 */ 9921 int 9922 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9923 { 9924 int err; 9925 char *stype, *val; 9926 nvlist_t *nvl; 9927 nvpair_t *curr; 9928 9929 if ((nvl = reparse_init()) == NULL) 9930 return (-1); 9931 9932 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9933 reparse_free(nvl); 9934 return (err); 9935 } 9936 9937 curr = NULL; 9938 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9939 if ((stype = nvpair_name(curr)) == NULL) { 9940 reparse_free(nvl); 9941 return (-2); 9942 } 9943 if (strncasecmp(stype, "NFS", 3) == 0) 9944 break; 9945 } 9946 9947 if ((curr == NULL) || 9948 (nvpair_value_string(curr, &val))) { 9949 reparse_free(nvl); 9950 return (-3); 9951 } 9952 *nvlp = nvl; 9953 *svcp = stype; 9954 *datap = val; 9955 return (0); 9956 } 9957 9958 int 9959 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9960 { 9961 nvlist_t *nvl; 9962 char *s, *d; 9963 9964 if (rfs4_no_referrals != 0) 9965 return (B_FALSE); 9966 9967 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9968 return (B_FALSE); 9969 9970 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9971 return (B_FALSE); 9972 9973 reparse_free(nvl); 9974 9975 return (B_TRUE); 9976 } 9977 9978 /* 9979 * There is a user-level copy of this routine in ref_subr.c. 9980 * Changes should be kept in sync. 9981 */ 9982 static int 9983 nfs4_create_components(char *path, component4 *comp4) 9984 { 9985 int slen, plen, ncomp; 9986 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9987 9988 if (path == NULL) 9989 return (0); 9990 9991 plen = strlen(path) + 1; /* include the terminator */ 9992 ori_path = path; 9993 ncomp = 0; 9994 9995 /* count number of components in the path */ 9996 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9997 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9998 if ((slen = nxtc - path) == 0) { 9999 path = nxtc + 1; 10000 continue; 10001 } 10002 10003 if (comp4 != NULL) { 10004 bcopy(path, buf, slen); 10005 buf[slen] = '\0'; 10006 (void) str_to_utf8(buf, &comp4[ncomp]); 10007 } 10008 10009 ncomp++; /* 1 valid component */ 10010 path = nxtc + 1; 10011 } 10012 if (*nxtc == '\0' || *nxtc == '\n') 10013 break; 10014 } 10015 10016 return (ncomp); 10017 } 10018 10019 /* 10020 * There is a user-level copy of this routine in ref_subr.c. 10021 * Changes should be kept in sync. 10022 */ 10023 static int 10024 make_pathname4(char *path, pathname4 *pathname) 10025 { 10026 int ncomp; 10027 component4 *comp4; 10028 10029 if (pathname == NULL) 10030 return (0); 10031 10032 if (path == NULL) { 10033 pathname->pathname4_val = NULL; 10034 pathname->pathname4_len = 0; 10035 return (0); 10036 } 10037 10038 /* count number of components to alloc buffer */ 10039 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 10040 pathname->pathname4_val = NULL; 10041 pathname->pathname4_len = 0; 10042 return (0); 10043 } 10044 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 10045 10046 /* copy components into allocated buffer */ 10047 ncomp = nfs4_create_components(path, comp4); 10048 10049 pathname->pathname4_val = comp4; 10050 pathname->pathname4_len = ncomp; 10051 10052 return (ncomp); 10053 } 10054 10055 #define xdr_fs_locations4 xdr_fattr4_fs_locations 10056 10057 fs_locations4 * 10058 fetch_referral(vnode_t *vp, cred_t *cr) 10059 { 10060 nvlist_t *nvl; 10061 char *stype, *sdata; 10062 fs_locations4 *result; 10063 char buf[1024]; 10064 size_t bufsize; 10065 XDR xdr; 10066 int err; 10067 10068 /* 10069 * Check attrs to ensure it's a reparse point 10070 */ 10071 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 10072 return (NULL); 10073 10074 /* 10075 * Look for an NFS record and get the type and data 10076 */ 10077 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 10078 return (NULL); 10079 10080 /* 10081 * With the type and data, upcall to get the referral 10082 */ 10083 bufsize = sizeof (buf); 10084 bzero(buf, sizeof (buf)); 10085 err = reparse_kderef((const char *)stype, (const char *)sdata, 10086 buf, &bufsize); 10087 reparse_free(nvl); 10088 10089 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 10090 char *, stype, char *, sdata, char *, buf, int, err); 10091 if (err) { 10092 cmn_err(CE_NOTE, 10093 "reparsed daemon not running: unable to get referral (%d)", 10094 err); 10095 return (NULL); 10096 } 10097 10098 /* 10099 * We get an XDR'ed record back from the kderef call 10100 */ 10101 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 10102 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 10103 err = xdr_fs_locations4(&xdr, result); 10104 XDR_DESTROY(&xdr); 10105 if (err != TRUE) { 10106 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 10107 int, err); 10108 return (NULL); 10109 } 10110 10111 /* 10112 * Look at path to recover fs_root, ignoring the leading '/' 10113 */ 10114 (void) make_pathname4(vp->v_path, &result->fs_root); 10115 10116 return (result); 10117 } 10118 10119 char * 10120 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 10121 { 10122 fs_locations4 *fsl; 10123 fs_location4 *fs; 10124 char *server, *path, *symbuf; 10125 static char *prefix = "/net/"; 10126 int i, size, npaths; 10127 uint_t len; 10128 10129 /* Get the referral */ 10130 if ((fsl = fetch_referral(vp, cr)) == NULL) 10131 return (NULL); 10132 10133 /* Deal with only the first location and first server */ 10134 fs = &fsl->locations_val[0]; 10135 server = utf8_to_str(&fs->server_val[0], &len, NULL); 10136 if (server == NULL) { 10137 rfs4_free_fs_locations4(fsl); 10138 kmem_free(fsl, sizeof (fs_locations4)); 10139 return (NULL); 10140 } 10141 10142 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 10143 size = strlen(prefix) + len; 10144 for (i = 0; i < fs->rootpath.pathname4_len; i++) 10145 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 10146 10147 /* Allocate the symlink buffer and fill it */ 10148 symbuf = kmem_zalloc(size, KM_SLEEP); 10149 (void) strcat(symbuf, prefix); 10150 (void) strcat(symbuf, server); 10151 kmem_free(server, len); 10152 10153 npaths = 0; 10154 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 10155 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 10156 if (path == NULL) 10157 continue; 10158 (void) strcat(symbuf, "/"); 10159 (void) strcat(symbuf, path); 10160 npaths++; 10161 kmem_free(path, len); 10162 } 10163 10164 rfs4_free_fs_locations4(fsl); 10165 kmem_free(fsl, sizeof (fs_locations4)); 10166 10167 if (strsz != NULL) 10168 *strsz = size; 10169 return (symbuf); 10170 } 10171 10172 /* 10173 * Check to see if we have a downrev Solaris client, so that we 10174 * can send it a symlink instead of a referral. 10175 */ 10176 int 10177 client_is_downrev(struct svc_req *req) 10178 { 10179 struct sockaddr *ca; 10180 rfs4_clntip_t *ci; 10181 bool_t create = FALSE; 10182 int is_downrev; 10183 10184 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 10185 ASSERT(ca); 10186 ci = rfs4_find_clntip(ca, &create); 10187 if (ci == NULL) 10188 return (0); 10189 is_downrev = ci->ri_no_referrals; 10190 rfs4_dbe_rele(ci->ri_dbe); 10191 return (is_downrev); 10192 } 10193 10194 /* 10195 * Do the main work of handling HA-NFSv4 Resource Group failover on 10196 * Sun Cluster. 10197 * We need to detect whether any RG admin paths have been added or removed, 10198 * and adjust resources accordingly. 10199 * Currently we're using a very inefficient algorithm, ~ 2 * O(n**2). In 10200 * order to scale, the list and array of paths need to be held in more 10201 * suitable data structures. 10202 */ 10203 static void 10204 hanfsv4_failover(nfs4_srv_t *nsrv4) 10205 { 10206 int i, start_grace, numadded_paths = 0; 10207 char **added_paths = NULL; 10208 rfs4_dss_path_t *dss_path; 10209 10210 /* 10211 * Note: currently, dss_pathlist cannot be NULL, since 10212 * it will always include an entry for NFS4_DSS_VAR_DIR. If we 10213 * make the latter dynamically specified too, the following will 10214 * need to be adjusted. 10215 */ 10216 10217 /* 10218 * First, look for removed paths: RGs that have been failed-over 10219 * away from this node. 10220 * Walk the "currently-serving" dss_pathlist and, for each 10221 * path, check if it is on the "passed-in" rfs4_dss_newpaths array 10222 * from nfsd. If not, that RG path has been removed. 10223 * 10224 * Note that nfsd has sorted rfs4_dss_newpaths for us, and removed 10225 * any duplicates. 10226 */ 10227 dss_path = nsrv4->dss_pathlist; 10228 do { 10229 int found = 0; 10230 char *path = dss_path->path; 10231 10232 /* used only for non-HA so may not be removed */ 10233 if (strcmp(path, NFS4_DSS_VAR_DIR) == 0) { 10234 dss_path = dss_path->next; 10235 continue; 10236 } 10237 10238 for (i = 0; i < rfs4_dss_numnewpaths; i++) { 10239 int cmpret; 10240 char *newpath = rfs4_dss_newpaths[i]; 10241 10242 /* 10243 * Since nfsd has sorted rfs4_dss_newpaths for us, 10244 * once the return from strcmp is negative we know 10245 * we've passed the point where "path" should be, 10246 * and can stop searching: "path" has been removed. 10247 */ 10248 cmpret = strcmp(path, newpath); 10249 if (cmpret < 0) 10250 break; 10251 if (cmpret == 0) { 10252 found = 1; 10253 break; 10254 } 10255 } 10256 10257 if (found == 0) { 10258 unsigned index = dss_path->index; 10259 rfs4_servinst_t *sip = dss_path->sip; 10260 rfs4_dss_path_t *path_next = dss_path->next; 10261 10262 /* 10263 * This path has been removed. 10264 * We must clear out the servinst reference to 10265 * it, since it's now owned by another 10266 * node: we should not attempt to touch it. 10267 */ 10268 ASSERT(dss_path == sip->dss_paths[index]); 10269 sip->dss_paths[index] = NULL; 10270 10271 /* remove from "currently-serving" list, and destroy */ 10272 remque(dss_path); 10273 /* allow for NUL */ 10274 kmem_free(dss_path->path, strlen(dss_path->path) + 1); 10275 kmem_free(dss_path, sizeof (rfs4_dss_path_t)); 10276 10277 dss_path = path_next; 10278 } else { 10279 /* path was found; not removed */ 10280 dss_path = dss_path->next; 10281 } 10282 } while (dss_path != nsrv4->dss_pathlist); 10283 10284 /* 10285 * Now, look for added paths: RGs that have been failed-over 10286 * to this node. 10287 * Walk the "passed-in" rfs4_dss_newpaths array from nfsd and, 10288 * for each path, check if it is on the "currently-serving" 10289 * dss_pathlist. If not, that RG path has been added. 10290 * 10291 * Note: we don't do duplicate detection here; nfsd does that for us. 10292 * 10293 * Note: numadded_paths <= rfs4_dss_numnewpaths, which gives us 10294 * an upper bound for the size needed for added_paths[numadded_paths]. 10295 */ 10296 10297 /* probably more space than we need, but guaranteed to be enough */ 10298 if (rfs4_dss_numnewpaths > 0) { 10299 size_t sz = rfs4_dss_numnewpaths * sizeof (char *); 10300 added_paths = kmem_zalloc(sz, KM_SLEEP); 10301 } 10302 10303 /* walk the "passed-in" rfs4_dss_newpaths array from nfsd */ 10304 for (i = 0; i < rfs4_dss_numnewpaths; i++) { 10305 int found = 0; 10306 char *newpath = rfs4_dss_newpaths[i]; 10307 10308 dss_path = nsrv4->dss_pathlist; 10309 do { 10310 char *path = dss_path->path; 10311 10312 /* used only for non-HA */ 10313 if (strcmp(path, NFS4_DSS_VAR_DIR) == 0) { 10314 dss_path = dss_path->next; 10315 continue; 10316 } 10317 10318 if (strncmp(path, newpath, strlen(path)) == 0) { 10319 found = 1; 10320 break; 10321 } 10322 10323 dss_path = dss_path->next; 10324 } while (dss_path != nsrv4->dss_pathlist); 10325 10326 if (found == 0) { 10327 added_paths[numadded_paths] = newpath; 10328 numadded_paths++; 10329 } 10330 } 10331 10332 /* did we find any added paths? */ 10333 if (numadded_paths > 0) { 10334 10335 /* create a new server instance, and start its grace period */ 10336 start_grace = 1; 10337 /* CSTYLED */ 10338 rfs4_servinst_create(nsrv4, start_grace, numadded_paths, added_paths); 10339 10340 /* read in the stable storage state from these paths */ 10341 rfs4_dss_readstate(nsrv4, numadded_paths, added_paths); 10342 10343 /* 10344 * Multiple failovers during a grace period will cause 10345 * clients of the same resource group to be partitioned 10346 * into different server instances, with different 10347 * grace periods. Since clients of the same resource 10348 * group must be subject to the same grace period, 10349 * we need to reset all currently active grace periods. 10350 */ 10351 rfs4_grace_reset_all(nsrv4); 10352 } 10353 10354 if (rfs4_dss_numnewpaths > 0) 10355 kmem_free(added_paths, rfs4_dss_numnewpaths * sizeof (char *)); 10356 } 10357