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 != VDIR) { 3228 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3229 goto out; 3230 } 3231 3232 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 3233 3234 /* 3235 * From NFSV4 Specification, LOOKUPP should not check for 3236 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 3237 */ 3238 if (resp->status == NFS4ERR_WRONGSEC) { 3239 *cs->statusp = resp->status = NFS4_OK; 3240 } 3241 3242 out: 3243 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 3244 LOOKUPP4res *, resp); 3245 } 3246 3247 3248 /*ARGSUSED2*/ 3249 static void 3250 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3251 struct compound_state *cs) 3252 { 3253 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 3254 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 3255 vnode_t *avp = NULL; 3256 int lookup_flags = LOOKUP_XATTR, error; 3257 int exp_ro = 0; 3258 3259 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 3260 OPENATTR4args *, args); 3261 3262 if (cs->vp == NULL) { 3263 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3264 goto out; 3265 } 3266 3267 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3268 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3269 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3270 goto out; 3271 } 3272 3273 /* 3274 * If file system supports passing ACE mask to VOP_ACCESS then 3275 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3276 */ 3277 3278 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3279 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3280 V_ACE_MASK, cs->cr, NULL); 3281 else 3282 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3283 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3284 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3285 3286 if (error) { 3287 *cs->statusp = resp->status = puterrno4(EACCES); 3288 goto out; 3289 } 3290 3291 /* 3292 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3293 * the file system is exported read-only -- regardless of 3294 * createdir flag. Otherwise the attrdir would be created 3295 * (assuming server fs isn't mounted readonly locally). If 3296 * VOP_LOOKUP returns ENOENT in this case, the error will 3297 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3298 * because specfs has no VOP_LOOKUP op, so the macro would 3299 * return ENOSYS. EINVAL is returned by all (current) 3300 * Solaris file system implementations when any of their 3301 * restrictions are violated (xattr(dir) can't have xattrdir). 3302 * Returning NOTSUPP is more appropriate in this case 3303 * because the object will never be able to have an attrdir. 3304 */ 3305 if (args->createdir && ! (exp_ro = rdonly4(req, cs))) 3306 lookup_flags |= CREATE_XATTR_DIR; 3307 3308 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3309 NULL, NULL, NULL); 3310 3311 if (error) { 3312 if (error == ENOENT && args->createdir && exp_ro) 3313 *cs->statusp = resp->status = puterrno4(EROFS); 3314 else if (error == EINVAL || error == ENOSYS) 3315 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3316 else 3317 *cs->statusp = resp->status = puterrno4(error); 3318 goto out; 3319 } 3320 3321 ASSERT(avp->v_flag & V_XATTRDIR); 3322 3323 error = makefh4(&cs->fh, avp, cs->exi); 3324 3325 if (error) { 3326 VN_RELE(avp); 3327 *cs->statusp = resp->status = puterrno4(error); 3328 goto out; 3329 } 3330 3331 VN_RELE(cs->vp); 3332 cs->vp = avp; 3333 3334 /* 3335 * There is no requirement for an attrdir fh flag 3336 * because the attrdir has a vnode flag to distinguish 3337 * it from regular (non-xattr) directories. The 3338 * FH4_ATTRDIR flag is set for future sanity checks. 3339 */ 3340 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3341 *cs->statusp = resp->status = NFS4_OK; 3342 3343 out: 3344 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3345 OPENATTR4res *, resp); 3346 } 3347 3348 static int 3349 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3350 caller_context_t *ct) 3351 { 3352 int error; 3353 int i; 3354 clock_t delaytime; 3355 3356 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3357 3358 /* 3359 * Don't block on mandatory locks. If this routine returns 3360 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3361 */ 3362 uio->uio_fmode = FNONBLOCK; 3363 3364 for (i = 0; i < rfs4_maxlock_tries; i++) { 3365 3366 3367 if (direction == FREAD) { 3368 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3369 error = VOP_READ(vp, uio, ioflag, cred, ct); 3370 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3371 } else { 3372 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3373 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3374 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3375 } 3376 3377 if (error != EAGAIN) 3378 break; 3379 3380 if (i < rfs4_maxlock_tries - 1) { 3381 delay(delaytime); 3382 delaytime *= 2; 3383 } 3384 } 3385 3386 return (error); 3387 } 3388 3389 /* ARGSUSED */ 3390 static void 3391 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3392 struct compound_state *cs) 3393 { 3394 READ4args *args = &argop->nfs_argop4_u.opread; 3395 READ4res *resp = &resop->nfs_resop4_u.opread; 3396 int error; 3397 int verror; 3398 vnode_t *vp; 3399 struct vattr va; 3400 struct iovec iov, *iovp = NULL; 3401 int iovcnt; 3402 struct uio uio; 3403 u_offset_t offset; 3404 bool_t *deleg = &cs->deleg; 3405 nfsstat4 stat; 3406 int in_crit = 0; 3407 mblk_t *mp = NULL; 3408 int alloc_err = 0; 3409 int rdma_used = 0; 3410 int loaned_buffers; 3411 caller_context_t ct; 3412 struct uio *uiop; 3413 3414 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3415 READ4args, args); 3416 3417 vp = cs->vp; 3418 if (vp == NULL) { 3419 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3420 goto out; 3421 } 3422 if (cs->access == CS_ACCESS_DENIED) { 3423 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3424 goto out; 3425 } 3426 3427 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3428 deleg, TRUE, &ct, cs)) != NFS4_OK) { 3429 *cs->statusp = resp->status = stat; 3430 goto out; 3431 } 3432 3433 /* 3434 * Enter the critical region before calling VOP_RWLOCK 3435 * to avoid a deadlock with write requests. 3436 */ 3437 if (nbl_need_check(vp)) { 3438 nbl_start_crit(vp, RW_READER); 3439 in_crit = 1; 3440 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3441 &ct)) { 3442 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3443 goto out; 3444 } 3445 } 3446 3447 if (args->wlist) { 3448 if (args->count > clist_len(args->wlist)) { 3449 *cs->statusp = resp->status = NFS4ERR_INVAL; 3450 goto out; 3451 } 3452 rdma_used = 1; 3453 } 3454 3455 /* use loaned buffers for TCP */ 3456 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3457 3458 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3459 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3460 3461 /* 3462 * If we can't get the attributes, then we can't do the 3463 * right access checking. So, we'll fail the request. 3464 */ 3465 if (verror) { 3466 *cs->statusp = resp->status = puterrno4(verror); 3467 goto out; 3468 } 3469 3470 if (vp->v_type != VREG) { 3471 *cs->statusp = resp->status = 3472 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3473 goto out; 3474 } 3475 3476 if (crgetuid(cs->cr) != va.va_uid && 3477 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3478 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3479 *cs->statusp = resp->status = puterrno4(error); 3480 goto out; 3481 } 3482 3483 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3484 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3485 goto out; 3486 } 3487 3488 offset = args->offset; 3489 if (offset >= va.va_size) { 3490 *cs->statusp = resp->status = NFS4_OK; 3491 resp->eof = TRUE; 3492 resp->data_len = 0; 3493 resp->data_val = NULL; 3494 resp->mblk = NULL; 3495 /* RDMA */ 3496 resp->wlist = args->wlist; 3497 resp->wlist_len = resp->data_len; 3498 *cs->statusp = resp->status = NFS4_OK; 3499 if (resp->wlist) 3500 clist_zero_len(resp->wlist); 3501 goto out; 3502 } 3503 3504 if (args->count == 0) { 3505 *cs->statusp = resp->status = NFS4_OK; 3506 resp->eof = FALSE; 3507 resp->data_len = 0; 3508 resp->data_val = NULL; 3509 resp->mblk = NULL; 3510 /* RDMA */ 3511 resp->wlist = args->wlist; 3512 resp->wlist_len = resp->data_len; 3513 if (resp->wlist) 3514 clist_zero_len(resp->wlist); 3515 goto out; 3516 } 3517 3518 /* 3519 * Do not allocate memory more than maximum allowed 3520 * transfer size 3521 */ 3522 if (args->count > rfs4_tsize(req)) 3523 args->count = rfs4_tsize(req); 3524 3525 if (loaned_buffers) { 3526 uiop = (uio_t *)rfs_setup_xuio(vp); 3527 ASSERT(uiop != NULL); 3528 uiop->uio_segflg = UIO_SYSSPACE; 3529 uiop->uio_loffset = args->offset; 3530 uiop->uio_resid = args->count; 3531 3532 /* Jump to do the read if successful */ 3533 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3534 /* 3535 * Need to hold the vnode until after VOP_RETZCBUF() 3536 * is called. 3537 */ 3538 VN_HOLD(vp); 3539 goto doio_read; 3540 } 3541 3542 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3543 uiop->uio_loffset, int, uiop->uio_resid); 3544 3545 uiop->uio_extflg = 0; 3546 3547 /* failure to setup for zero copy */ 3548 rfs_free_xuio((void *)uiop); 3549 loaned_buffers = 0; 3550 } 3551 3552 /* 3553 * If returning data via RDMA Write, then grab the chunk list. If we 3554 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3555 */ 3556 if (rdma_used) { 3557 mp = NULL; 3558 (void) rdma_get_wchunk(req, &iov, args->wlist); 3559 uio.uio_iov = &iov; 3560 uio.uio_iovcnt = 1; 3561 } else { 3562 /* 3563 * mp will contain the data to be sent out in the read reply. 3564 * It will be freed after the reply has been sent. 3565 */ 3566 mp = rfs_read_alloc(args->count, &iovp, &iovcnt); 3567 ASSERT(mp != NULL); 3568 ASSERT(alloc_err == 0); 3569 uio.uio_iov = iovp; 3570 uio.uio_iovcnt = iovcnt; 3571 } 3572 3573 uio.uio_segflg = UIO_SYSSPACE; 3574 uio.uio_extflg = UIO_COPY_CACHED; 3575 uio.uio_loffset = args->offset; 3576 uio.uio_resid = args->count; 3577 uiop = &uio; 3578 3579 doio_read: 3580 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3581 3582 va.va_mask = AT_SIZE; 3583 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3584 3585 if (error) { 3586 if (mp) 3587 freemsg(mp); 3588 *cs->statusp = resp->status = puterrno4(error); 3589 goto out; 3590 } 3591 3592 /* make mblk using zc buffers */ 3593 if (loaned_buffers) { 3594 mp = uio_to_mblk(uiop); 3595 ASSERT(mp != NULL); 3596 } 3597 3598 *cs->statusp = resp->status = NFS4_OK; 3599 3600 ASSERT(uiop->uio_resid >= 0); 3601 resp->data_len = args->count - uiop->uio_resid; 3602 if (mp) { 3603 resp->data_val = (char *)mp->b_datap->db_base; 3604 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3605 } else { 3606 resp->data_val = (caddr_t)iov.iov_base; 3607 } 3608 3609 resp->mblk = mp; 3610 3611 if (!verror && offset + resp->data_len == va.va_size) 3612 resp->eof = TRUE; 3613 else 3614 resp->eof = FALSE; 3615 3616 if (rdma_used) { 3617 if (!rdma_setup_read_data4(args, resp)) { 3618 *cs->statusp = resp->status = NFS4ERR_INVAL; 3619 } 3620 } else { 3621 resp->wlist = NULL; 3622 } 3623 3624 out: 3625 if (in_crit) 3626 nbl_end_crit(vp); 3627 3628 if (iovp != NULL) 3629 kmem_free(iovp, iovcnt * sizeof (struct iovec)); 3630 3631 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3632 READ4res *, resp); 3633 } 3634 3635 static void 3636 rfs4_op_read_free(nfs_resop4 *resop) 3637 { 3638 READ4res *resp = &resop->nfs_resop4_u.opread; 3639 3640 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3641 freemsg(resp->mblk); 3642 resp->mblk = NULL; 3643 resp->data_val = NULL; 3644 resp->data_len = 0; 3645 } 3646 } 3647 3648 static void 3649 rfs4_op_readdir_free(nfs_resop4 * resop) 3650 { 3651 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3652 3653 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3654 freeb(resp->mblk); 3655 resp->mblk = NULL; 3656 resp->data_len = 0; 3657 } 3658 } 3659 3660 3661 /* ARGSUSED */ 3662 static void 3663 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3664 struct compound_state *cs) 3665 { 3666 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3667 int error; 3668 vnode_t *vp; 3669 struct exportinfo *exi, *sav_exi; 3670 nfs_fh4_fmt_t *fh_fmtp; 3671 nfs_export_t *ne = nfs_get_export(); 3672 3673 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3674 3675 if (cs->vp) { 3676 VN_RELE(cs->vp); 3677 cs->vp = NULL; 3678 } 3679 3680 if (cs->cr) 3681 crfree(cs->cr); 3682 3683 cs->cr = crdup(cs->basecr); 3684 3685 vp = ne->exi_public->exi_vp; 3686 if (vp == NULL) { 3687 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3688 goto out; 3689 } 3690 3691 error = makefh4(&cs->fh, vp, ne->exi_public); 3692 if (error != 0) { 3693 *cs->statusp = resp->status = puterrno4(error); 3694 goto out; 3695 } 3696 sav_exi = cs->exi; 3697 if (ne->exi_public == ne->exi_root) { 3698 /* 3699 * No filesystem is actually shared public, so we default 3700 * to exi_root. In this case, we must check whether root 3701 * is exported. 3702 */ 3703 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3704 3705 /* 3706 * if root filesystem is exported, the exportinfo struct that we 3707 * should use is what checkexport4 returns, because root_exi is 3708 * actually a mostly empty struct. 3709 */ 3710 exi = checkexport4(&fh_fmtp->fh4_fsid, 3711 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3712 cs->exi = ((exi != NULL) ? exi : ne->exi_public); 3713 } else { 3714 /* 3715 * it's a properly shared filesystem 3716 */ 3717 cs->exi = ne->exi_public; 3718 } 3719 3720 if (is_system_labeled()) { 3721 bslabel_t *clabel; 3722 3723 ASSERT(req->rq_label != NULL); 3724 clabel = req->rq_label; 3725 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3726 "got client label from request(1)", 3727 struct svc_req *, req); 3728 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3729 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3730 cs->exi)) { 3731 *cs->statusp = resp->status = 3732 NFS4ERR_SERVERFAULT; 3733 goto out; 3734 } 3735 } 3736 } 3737 3738 VN_HOLD(vp); 3739 cs->vp = vp; 3740 3741 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3742 VN_RELE(cs->vp); 3743 cs->vp = NULL; 3744 cs->exi = sav_exi; 3745 goto out; 3746 } 3747 3748 *cs->statusp = resp->status = NFS4_OK; 3749 out: 3750 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3751 PUTPUBFH4res *, resp); 3752 } 3753 3754 /* 3755 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3756 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3757 * or joe have restrictive search permissions, then we shouldn't let 3758 * the client get a file handle. This is easy to enforce. However, we 3759 * don't know what security flavor should be used until we resolve the 3760 * path name. Another complication is uid mapping. If root is 3761 * the user, then it will be mapped to the anonymous user by default, 3762 * but we won't know that till we've resolved the path name. And we won't 3763 * know what the anonymous user is. 3764 * Luckily, SECINFO is specified to take a full filename. 3765 * So what we will have to in rfs4_op_lookup is check that flavor of 3766 * the target object matches that of the request, and if root was the 3767 * caller, check for the root= and anon= options, and if necessary, 3768 * repeat the lookup using the right cred_t. But that's not done yet. 3769 */ 3770 /* ARGSUSED */ 3771 static void 3772 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3773 struct compound_state *cs) 3774 { 3775 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3776 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3777 nfs_fh4_fmt_t *fh_fmtp; 3778 3779 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3780 PUTFH4args *, args); 3781 3782 if (cs->vp) { 3783 VN_RELE(cs->vp); 3784 cs->vp = NULL; 3785 } 3786 3787 if (cs->cr) { 3788 crfree(cs->cr); 3789 cs->cr = NULL; 3790 } 3791 3792 3793 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3794 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3795 goto out; 3796 } 3797 3798 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3799 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3800 NULL); 3801 3802 if (cs->exi == NULL) { 3803 *cs->statusp = resp->status = NFS4ERR_STALE; 3804 goto out; 3805 } 3806 3807 cs->cr = crdup(cs->basecr); 3808 3809 ASSERT(cs->cr != NULL); 3810 3811 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3812 *cs->statusp = resp->status; 3813 goto out; 3814 } 3815 3816 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3817 VN_RELE(cs->vp); 3818 cs->vp = NULL; 3819 goto out; 3820 } 3821 3822 nfs_fh4_copy(&args->object, &cs->fh); 3823 *cs->statusp = resp->status = NFS4_OK; 3824 cs->deleg = FALSE; 3825 3826 out: 3827 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3828 PUTFH4res *, resp); 3829 } 3830 3831 /* ARGSUSED */ 3832 static void 3833 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3834 struct compound_state *cs) 3835 { 3836 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3837 int error; 3838 fid_t fid; 3839 struct exportinfo *exi, *sav_exi; 3840 3841 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3842 3843 if (cs->vp) { 3844 VN_RELE(cs->vp); 3845 cs->vp = NULL; 3846 } 3847 3848 if (cs->cr) 3849 crfree(cs->cr); 3850 3851 cs->cr = crdup(cs->basecr); 3852 3853 /* 3854 * Using rootdir, the system root vnode, 3855 * get its fid. 3856 */ 3857 bzero(&fid, sizeof (fid)); 3858 fid.fid_len = MAXFIDSZ; 3859 error = vop_fid_pseudo(ZONE_ROOTVP(), &fid); 3860 if (error != 0) { 3861 *cs->statusp = resp->status = puterrno4(error); 3862 goto out; 3863 } 3864 3865 /* 3866 * Then use the root fsid & fid it to find out if it's exported 3867 * 3868 * If the server root isn't exported directly, then 3869 * it should at least be a pseudo export based on 3870 * one or more exports further down in the server's 3871 * file tree. 3872 */ 3873 exi = checkexport4(&ZONE_ROOTVP()->v_vfsp->vfs_fsid, &fid, NULL); 3874 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3875 NFS4_DEBUG(rfs4_debug, 3876 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3877 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3878 goto out; 3879 } 3880 3881 /* 3882 * Now make a filehandle based on the root 3883 * export and root vnode. 3884 */ 3885 error = makefh4(&cs->fh, ZONE_ROOTVP(), exi); 3886 if (error != 0) { 3887 *cs->statusp = resp->status = puterrno4(error); 3888 goto out; 3889 } 3890 3891 sav_exi = cs->exi; 3892 cs->exi = exi; 3893 3894 VN_HOLD(ZONE_ROOTVP()); 3895 cs->vp = ZONE_ROOTVP(); 3896 3897 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3898 VN_RELE(cs->vp); 3899 cs->vp = NULL; 3900 cs->exi = sav_exi; 3901 goto out; 3902 } 3903 3904 *cs->statusp = resp->status = NFS4_OK; 3905 cs->deleg = FALSE; 3906 out: 3907 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3908 PUTROOTFH4res *, resp); 3909 } 3910 3911 /* 3912 * readlink: args: CURRENT_FH. 3913 * res: status. If success - CURRENT_FH unchanged, return linktext. 3914 */ 3915 3916 /* ARGSUSED */ 3917 static void 3918 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3919 struct compound_state *cs) 3920 { 3921 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3922 int error; 3923 vnode_t *vp; 3924 struct iovec iov; 3925 struct vattr va; 3926 struct uio uio; 3927 char *data; 3928 struct sockaddr *ca; 3929 char *name = NULL; 3930 int is_referral; 3931 3932 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3933 3934 /* CURRENT_FH: directory */ 3935 vp = cs->vp; 3936 if (vp == NULL) { 3937 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3938 goto out; 3939 } 3940 3941 if (cs->access == CS_ACCESS_DENIED) { 3942 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3943 goto out; 3944 } 3945 3946 /* Is it a referral? */ 3947 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3948 3949 is_referral = 1; 3950 3951 } else { 3952 3953 is_referral = 0; 3954 3955 if (vp->v_type == VDIR) { 3956 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3957 goto out; 3958 } 3959 3960 if (vp->v_type != VLNK) { 3961 *cs->statusp = resp->status = NFS4ERR_INVAL; 3962 goto out; 3963 } 3964 3965 } 3966 3967 va.va_mask = AT_MODE; 3968 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3969 if (error) { 3970 *cs->statusp = resp->status = puterrno4(error); 3971 goto out; 3972 } 3973 3974 if (MANDLOCK(vp, va.va_mode)) { 3975 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3976 goto out; 3977 } 3978 3979 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3980 3981 if (is_referral) { 3982 char *s; 3983 size_t strsz; 3984 kstat_named_t *stat = 3985 cs->exi->exi_ne->ne_globals->svstat[NFS_V4]; 3986 3987 /* Get an artificial symlink based on a referral */ 3988 s = build_symlink(vp, cs->cr, &strsz); 3989 stat[NFS_REFERLINKS].value.ui64++; 3990 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3991 vnode_t *, vp, char *, s); 3992 if (s == NULL) 3993 error = EINVAL; 3994 else { 3995 error = 0; 3996 (void) strlcpy(data, s, MAXPATHLEN + 1); 3997 kmem_free(s, strsz); 3998 } 3999 4000 } else { 4001 4002 iov.iov_base = data; 4003 iov.iov_len = MAXPATHLEN; 4004 uio.uio_iov = &iov; 4005 uio.uio_iovcnt = 1; 4006 uio.uio_segflg = UIO_SYSSPACE; 4007 uio.uio_extflg = UIO_COPY_CACHED; 4008 uio.uio_loffset = 0; 4009 uio.uio_resid = MAXPATHLEN; 4010 4011 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 4012 4013 if (!error) 4014 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 4015 } 4016 4017 if (error) { 4018 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 4019 *cs->statusp = resp->status = puterrno4(error); 4020 goto out; 4021 } 4022 4023 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4024 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 4025 MAXPATHLEN + 1); 4026 4027 if (name == NULL) { 4028 /* 4029 * Even though the conversion failed, we return 4030 * something. We just don't translate it. 4031 */ 4032 name = data; 4033 } 4034 4035 /* 4036 * treat link name as data 4037 */ 4038 (void) str_to_utf8(name, (utf8string *)&resp->link); 4039 4040 if (name != data) 4041 kmem_free(name, MAXPATHLEN + 1); 4042 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 4043 *cs->statusp = resp->status = NFS4_OK; 4044 4045 out: 4046 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 4047 READLINK4res *, resp); 4048 } 4049 4050 static void 4051 rfs4_op_readlink_free(nfs_resop4 *resop) 4052 { 4053 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 4054 utf8string *symlink = (utf8string *)&resp->link; 4055 4056 if (symlink->utf8string_val) { 4057 UTF8STRING_FREE(*symlink) 4058 } 4059 } 4060 4061 /* 4062 * release_lockowner: 4063 * Release any state associated with the supplied 4064 * lockowner. Note if any lo_state is holding locks we will not 4065 * rele that lo_state and thus the lockowner will not be destroyed. 4066 * A client using lock after the lock owner stateid has been released 4067 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 4068 * to reissue the lock with new_lock_owner set to TRUE. 4069 * args: lock_owner 4070 * res: status 4071 */ 4072 /* ARGSUSED */ 4073 static void 4074 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 4075 struct svc_req *req, struct compound_state *cs) 4076 { 4077 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 4078 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 4079 rfs4_lockowner_t *lo; 4080 rfs4_openowner_t *oo; 4081 rfs4_state_t *sp; 4082 rfs4_lo_state_t *lsp; 4083 rfs4_client_t *cp; 4084 bool_t create = FALSE; 4085 locklist_t *llist; 4086 sysid_t sysid; 4087 4088 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 4089 cs, RELEASE_LOCKOWNER4args *, ap); 4090 4091 /* Make sure there is a clientid around for this request */ 4092 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 4093 4094 if (cp == NULL) { 4095 *cs->statusp = resp->status = 4096 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 4097 goto out; 4098 } 4099 rfs4_client_rele(cp); 4100 4101 lo = rfs4_findlockowner(&ap->lock_owner, &create); 4102 if (lo == NULL) { 4103 *cs->statusp = resp->status = NFS4_OK; 4104 goto out; 4105 } 4106 ASSERT(lo->rl_client != NULL); 4107 4108 /* 4109 * Check for EXPIRED client. If so will reap state with in a lease 4110 * period or on next set_clientid_confirm step 4111 */ 4112 if (rfs4_lease_expired(lo->rl_client)) { 4113 rfs4_lockowner_rele(lo); 4114 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4115 goto out; 4116 } 4117 4118 /* 4119 * If no sysid has been assigned, then no locks exist; just return. 4120 */ 4121 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4122 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 4123 rfs4_lockowner_rele(lo); 4124 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4125 goto out; 4126 } 4127 4128 sysid = lo->rl_client->rc_sysidt; 4129 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4130 4131 /* 4132 * Mark the lockowner invalid. 4133 */ 4134 rfs4_dbe_hide(lo->rl_dbe); 4135 4136 /* 4137 * sysid-pid pair should now not be used since the lockowner is 4138 * invalid. If the client were to instantiate the lockowner again 4139 * it would be assigned a new pid. Thus we can get the list of 4140 * current locks. 4141 */ 4142 4143 llist = flk_get_active_locks(sysid, lo->rl_pid); 4144 /* If we are still holding locks fail */ 4145 if (llist != NULL) { 4146 4147 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 4148 4149 flk_free_locklist(llist); 4150 /* 4151 * We need to unhide the lockowner so the client can 4152 * try it again. The bad thing here is if the client 4153 * has a logic error that took it here in the first place 4154 * they probably have lost accounting of the locks that it 4155 * is holding. So we may have dangling state until the 4156 * open owner state is reaped via close. One scenario 4157 * that could possibly occur is that the client has 4158 * sent the unlock request(s) in separate threads 4159 * and has not waited for the replies before sending the 4160 * RELEASE_LOCKOWNER request. Presumably, it would expect 4161 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 4162 * reissuing the request. 4163 */ 4164 rfs4_dbe_unhide(lo->rl_dbe); 4165 rfs4_lockowner_rele(lo); 4166 goto out; 4167 } 4168 4169 /* 4170 * For the corresponding client we need to check each open 4171 * owner for any opens that have lockowner state associated 4172 * with this lockowner. 4173 */ 4174 4175 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4176 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 4177 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 4178 4179 rfs4_dbe_lock(oo->ro_dbe); 4180 for (sp = list_head(&oo->ro_statelist); sp != NULL; 4181 sp = list_next(&oo->ro_statelist, sp)) { 4182 4183 rfs4_dbe_lock(sp->rs_dbe); 4184 for (lsp = list_head(&sp->rs_lostatelist); 4185 lsp != NULL; 4186 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4187 if (lsp->rls_locker == lo) { 4188 rfs4_dbe_lock(lsp->rls_dbe); 4189 rfs4_dbe_invalidate(lsp->rls_dbe); 4190 rfs4_dbe_unlock(lsp->rls_dbe); 4191 } 4192 } 4193 rfs4_dbe_unlock(sp->rs_dbe); 4194 } 4195 rfs4_dbe_unlock(oo->ro_dbe); 4196 } 4197 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4198 4199 rfs4_lockowner_rele(lo); 4200 4201 *cs->statusp = resp->status = NFS4_OK; 4202 4203 out: 4204 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4205 cs, RELEASE_LOCKOWNER4res *, resp); 4206 } 4207 4208 /* 4209 * short utility function to lookup a file and recall the delegation 4210 */ 4211 static rfs4_file_t * 4212 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4213 int *lkup_error, cred_t *cr) 4214 { 4215 vnode_t *vp; 4216 rfs4_file_t *fp = NULL; 4217 bool_t fcreate = FALSE; 4218 int error; 4219 4220 if (vpp) 4221 *vpp = NULL; 4222 4223 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4224 NULL)) == 0) { 4225 if (vp->v_type == VREG) 4226 fp = rfs4_findfile(vp, NULL, &fcreate); 4227 if (vpp) 4228 *vpp = vp; 4229 else 4230 VN_RELE(vp); 4231 } 4232 4233 if (lkup_error) 4234 *lkup_error = error; 4235 4236 return (fp); 4237 } 4238 4239 /* 4240 * remove: args: CURRENT_FH: directory; name. 4241 * res: status. If success - CURRENT_FH unchanged, return change_info 4242 * for directory. 4243 */ 4244 /* ARGSUSED */ 4245 static void 4246 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4247 struct compound_state *cs) 4248 { 4249 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4250 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4251 int error; 4252 vnode_t *dvp, *vp; 4253 struct vattr bdva, idva, adva; 4254 char *nm; 4255 uint_t len; 4256 rfs4_file_t *fp; 4257 int in_crit = 0; 4258 bslabel_t *clabel; 4259 struct sockaddr *ca; 4260 char *name = NULL; 4261 nfsstat4 status; 4262 4263 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4264 REMOVE4args *, args); 4265 4266 /* CURRENT_FH: directory */ 4267 dvp = cs->vp; 4268 if (dvp == NULL) { 4269 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4270 goto out; 4271 } 4272 4273 if (cs->access == CS_ACCESS_DENIED) { 4274 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4275 goto out; 4276 } 4277 4278 /* 4279 * If there is an unshared filesystem mounted on this vnode, 4280 * Do not allow to remove anything in this directory. 4281 */ 4282 if (vn_ismntpt(dvp)) { 4283 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4284 goto out; 4285 } 4286 4287 if (dvp->v_type != VDIR) { 4288 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4289 goto out; 4290 } 4291 4292 status = utf8_dir_verify(&args->target); 4293 if (status != NFS4_OK) { 4294 *cs->statusp = resp->status = status; 4295 goto out; 4296 } 4297 4298 /* 4299 * Lookup the file so that we can check if it's a directory 4300 */ 4301 nm = utf8_to_fn(&args->target, &len, NULL); 4302 if (nm == NULL) { 4303 *cs->statusp = resp->status = NFS4ERR_INVAL; 4304 goto out; 4305 } 4306 4307 if (len > MAXNAMELEN) { 4308 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4309 kmem_free(nm, len); 4310 goto out; 4311 } 4312 4313 if (rdonly4(req, cs)) { 4314 *cs->statusp = resp->status = NFS4ERR_ROFS; 4315 kmem_free(nm, len); 4316 goto out; 4317 } 4318 4319 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4320 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4321 MAXPATHLEN + 1); 4322 4323 if (name == NULL) { 4324 *cs->statusp = resp->status = NFS4ERR_INVAL; 4325 kmem_free(nm, len); 4326 goto out; 4327 } 4328 4329 /* 4330 * Lookup the file to determine type and while we are see if 4331 * there is a file struct around and check for delegation. 4332 * We don't need to acquire va_seq before this lookup, if 4333 * it causes an update, cinfo.before will not match, which will 4334 * trigger a cache flush even if atomic is TRUE. 4335 */ 4336 fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr); 4337 if (fp != NULL) { 4338 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4339 NULL)) { 4340 VN_RELE(vp); 4341 rfs4_file_rele(fp); 4342 *cs->statusp = resp->status = NFS4ERR_DELAY; 4343 if (nm != name) 4344 kmem_free(name, MAXPATHLEN + 1); 4345 kmem_free(nm, len); 4346 goto out; 4347 } 4348 } 4349 4350 /* Didn't find anything to remove */ 4351 if (vp == NULL) { 4352 *cs->statusp = resp->status = error; 4353 if (nm != name) 4354 kmem_free(name, MAXPATHLEN + 1); 4355 kmem_free(nm, len); 4356 goto out; 4357 } 4358 4359 if (nbl_need_check(vp)) { 4360 nbl_start_crit(vp, RW_READER); 4361 in_crit = 1; 4362 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4363 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4364 if (nm != name) 4365 kmem_free(name, MAXPATHLEN + 1); 4366 kmem_free(nm, len); 4367 nbl_end_crit(vp); 4368 VN_RELE(vp); 4369 if (fp) { 4370 rfs4_clear_dont_grant(fp); 4371 rfs4_file_rele(fp); 4372 } 4373 goto out; 4374 } 4375 } 4376 4377 /* check label before allowing removal */ 4378 if (is_system_labeled()) { 4379 ASSERT(req->rq_label != NULL); 4380 clabel = req->rq_label; 4381 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4382 "got client label from request(1)", 4383 struct svc_req *, req); 4384 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4385 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4386 cs->exi)) { 4387 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4388 if (name != nm) 4389 kmem_free(name, MAXPATHLEN + 1); 4390 kmem_free(nm, len); 4391 if (in_crit) 4392 nbl_end_crit(vp); 4393 VN_RELE(vp); 4394 if (fp) { 4395 rfs4_clear_dont_grant(fp); 4396 rfs4_file_rele(fp); 4397 } 4398 goto out; 4399 } 4400 } 4401 } 4402 4403 /* Get dir "before" change value */ 4404 bdva.va_mask = AT_CTIME|AT_SEQ; 4405 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4406 if (error) { 4407 *cs->statusp = resp->status = puterrno4(error); 4408 if (nm != name) 4409 kmem_free(name, MAXPATHLEN + 1); 4410 kmem_free(nm, len); 4411 if (in_crit) 4412 nbl_end_crit(vp); 4413 VN_RELE(vp); 4414 if (fp) { 4415 rfs4_clear_dont_grant(fp); 4416 rfs4_file_rele(fp); 4417 } 4418 goto out; 4419 } 4420 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4421 4422 /* Actually do the REMOVE operation */ 4423 if (vp->v_type == VDIR) { 4424 /* 4425 * Can't remove a directory that has a mounted-on filesystem. 4426 */ 4427 if (vn_ismntpt(vp)) { 4428 error = EACCES; 4429 } else { 4430 /* 4431 * System V defines rmdir to return EEXIST, 4432 * not ENOTEMPTY, if the directory is not 4433 * empty. A System V NFS server needs to map 4434 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4435 * transmit over the wire. 4436 */ 4437 if ((error = VOP_RMDIR(dvp, name, ZONE_ROOTVP(), cs->cr, 4438 NULL, 0)) == EEXIST) 4439 error = ENOTEMPTY; 4440 } 4441 } else { 4442 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4443 fp != NULL) { 4444 struct vattr va; 4445 vnode_t *tvp; 4446 4447 rfs4_dbe_lock(fp->rf_dbe); 4448 tvp = fp->rf_vp; 4449 if (tvp) 4450 VN_HOLD(tvp); 4451 rfs4_dbe_unlock(fp->rf_dbe); 4452 4453 if (tvp) { 4454 /* 4455 * This is va_seq safe because we are not 4456 * manipulating dvp. 4457 */ 4458 va.va_mask = AT_NLINK; 4459 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4460 va.va_nlink == 0) { 4461 /* Remove state on file remove */ 4462 if (in_crit) { 4463 nbl_end_crit(vp); 4464 in_crit = 0; 4465 } 4466 rfs4_close_all_state(fp); 4467 } 4468 VN_RELE(tvp); 4469 } 4470 } 4471 } 4472 4473 if (in_crit) 4474 nbl_end_crit(vp); 4475 VN_RELE(vp); 4476 4477 if (fp) { 4478 rfs4_clear_dont_grant(fp); 4479 rfs4_file_rele(fp); 4480 } 4481 if (nm != name) 4482 kmem_free(name, MAXPATHLEN + 1); 4483 kmem_free(nm, len); 4484 4485 if (error) { 4486 *cs->statusp = resp->status = puterrno4(error); 4487 goto out; 4488 } 4489 4490 /* 4491 * Get the initial "after" sequence number, if it fails, set to zero 4492 */ 4493 idva.va_mask = AT_SEQ; 4494 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4495 idva.va_seq = 0; 4496 4497 /* 4498 * Force modified data and metadata out to stable storage. 4499 */ 4500 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4501 4502 /* 4503 * Get "after" change value, if it fails, simply return the 4504 * before value. 4505 */ 4506 adva.va_mask = AT_CTIME|AT_SEQ; 4507 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4508 adva.va_ctime = bdva.va_ctime; 4509 adva.va_seq = 0; 4510 } 4511 4512 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4513 4514 /* 4515 * The cinfo.atomic = TRUE only if we have 4516 * non-zero va_seq's, and it has incremented by exactly one 4517 * during the VOP_REMOVE/RMDIR and it didn't change during 4518 * the VOP_FSYNC. 4519 */ 4520 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4521 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4522 resp->cinfo.atomic = TRUE; 4523 else 4524 resp->cinfo.atomic = FALSE; 4525 4526 *cs->statusp = resp->status = NFS4_OK; 4527 4528 out: 4529 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4530 REMOVE4res *, resp); 4531 } 4532 4533 /* 4534 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4535 * oldname and newname. 4536 * res: status. If success - CURRENT_FH unchanged, return change_info 4537 * for both from and target directories. 4538 */ 4539 /* ARGSUSED */ 4540 static void 4541 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4542 struct compound_state *cs) 4543 { 4544 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4545 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4546 int error; 4547 vnode_t *odvp; 4548 vnode_t *ndvp; 4549 vnode_t *srcvp, *targvp, *tvp; 4550 struct vattr obdva, oidva, oadva; 4551 struct vattr nbdva, nidva, nadva; 4552 char *onm, *nnm; 4553 uint_t olen, nlen; 4554 rfs4_file_t *fp, *sfp; 4555 int in_crit_src, in_crit_targ; 4556 int fp_rele_grant_hold, sfp_rele_grant_hold; 4557 int unlinked; 4558 bslabel_t *clabel; 4559 struct sockaddr *ca; 4560 char *converted_onm = NULL; 4561 char *converted_nnm = NULL; 4562 nfsstat4 status; 4563 4564 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4565 RENAME4args *, args); 4566 4567 fp = sfp = NULL; 4568 srcvp = targvp = tvp = NULL; 4569 in_crit_src = in_crit_targ = 0; 4570 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4571 unlinked = 0; 4572 4573 /* CURRENT_FH: target directory */ 4574 ndvp = cs->vp; 4575 if (ndvp == NULL) { 4576 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4577 goto out; 4578 } 4579 4580 /* SAVED_FH: from directory */ 4581 odvp = cs->saved_vp; 4582 if (odvp == NULL) { 4583 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4584 goto out; 4585 } 4586 4587 if (cs->access == CS_ACCESS_DENIED) { 4588 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4589 goto out; 4590 } 4591 4592 /* 4593 * If there is an unshared filesystem mounted on this vnode, 4594 * do not allow to rename objects in this directory. 4595 */ 4596 if (vn_ismntpt(odvp)) { 4597 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4598 goto out; 4599 } 4600 4601 /* 4602 * If there is an unshared filesystem mounted on this vnode, 4603 * do not allow to rename to this directory. 4604 */ 4605 if (vn_ismntpt(ndvp)) { 4606 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4607 goto out; 4608 } 4609 4610 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4611 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4612 goto out; 4613 } 4614 4615 if (cs->saved_exi != cs->exi) { 4616 *cs->statusp = resp->status = NFS4ERR_XDEV; 4617 goto out; 4618 } 4619 4620 status = utf8_dir_verify(&args->oldname); 4621 if (status != NFS4_OK) { 4622 *cs->statusp = resp->status = status; 4623 goto out; 4624 } 4625 4626 status = utf8_dir_verify(&args->newname); 4627 if (status != NFS4_OK) { 4628 *cs->statusp = resp->status = status; 4629 goto out; 4630 } 4631 4632 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4633 if (onm == NULL) { 4634 *cs->statusp = resp->status = NFS4ERR_INVAL; 4635 goto out; 4636 } 4637 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4638 nlen = MAXPATHLEN + 1; 4639 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4640 nlen); 4641 4642 if (converted_onm == NULL) { 4643 *cs->statusp = resp->status = NFS4ERR_INVAL; 4644 kmem_free(onm, olen); 4645 goto out; 4646 } 4647 4648 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4649 if (nnm == NULL) { 4650 *cs->statusp = resp->status = NFS4ERR_INVAL; 4651 if (onm != converted_onm) 4652 kmem_free(converted_onm, MAXPATHLEN + 1); 4653 kmem_free(onm, olen); 4654 goto out; 4655 } 4656 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4657 MAXPATHLEN + 1); 4658 4659 if (converted_nnm == NULL) { 4660 *cs->statusp = resp->status = NFS4ERR_INVAL; 4661 kmem_free(nnm, nlen); 4662 nnm = NULL; 4663 if (onm != converted_onm) 4664 kmem_free(converted_onm, MAXPATHLEN + 1); 4665 kmem_free(onm, olen); 4666 goto out; 4667 } 4668 4669 4670 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4671 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4672 kmem_free(onm, olen); 4673 kmem_free(nnm, nlen); 4674 goto out; 4675 } 4676 4677 4678 if (rdonly4(req, cs)) { 4679 *cs->statusp = resp->status = NFS4ERR_ROFS; 4680 if (onm != converted_onm) 4681 kmem_free(converted_onm, MAXPATHLEN + 1); 4682 kmem_free(onm, olen); 4683 if (nnm != converted_nnm) 4684 kmem_free(converted_nnm, MAXPATHLEN + 1); 4685 kmem_free(nnm, nlen); 4686 goto out; 4687 } 4688 4689 /* check label of the target dir */ 4690 if (is_system_labeled()) { 4691 ASSERT(req->rq_label != NULL); 4692 clabel = req->rq_label; 4693 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4694 "got client label from request(1)", 4695 struct svc_req *, req); 4696 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4697 if (!do_rfs_label_check(clabel, ndvp, 4698 EQUALITY_CHECK, cs->exi)) { 4699 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4700 goto err_out; 4701 } 4702 } 4703 } 4704 4705 /* 4706 * Is the source a file and have a delegation? 4707 * We don't need to acquire va_seq before these lookups, if 4708 * it causes an update, cinfo.before will not match, which will 4709 * trigger a cache flush even if atomic is TRUE. 4710 */ 4711 sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4712 &error, cs->cr); 4713 if (sfp != NULL) { 4714 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4715 NULL)) { 4716 *cs->statusp = resp->status = NFS4ERR_DELAY; 4717 goto err_out; 4718 } 4719 } 4720 4721 if (srcvp == NULL) { 4722 *cs->statusp = resp->status = puterrno4(error); 4723 if (onm != converted_onm) 4724 kmem_free(converted_onm, MAXPATHLEN + 1); 4725 kmem_free(onm, olen); 4726 if (nnm != converted_nnm) 4727 kmem_free(converted_nnm, MAXPATHLEN + 1); 4728 kmem_free(nnm, nlen); 4729 goto out; 4730 } 4731 4732 sfp_rele_grant_hold = 1; 4733 4734 /* Does the destination exist and a file and have a delegation? */ 4735 fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, NULL, 4736 cs->cr); 4737 if (fp != NULL) { 4738 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4739 NULL)) { 4740 *cs->statusp = resp->status = NFS4ERR_DELAY; 4741 goto err_out; 4742 } 4743 } 4744 fp_rele_grant_hold = 1; 4745 4746 /* Check for NBMAND lock on both source and target */ 4747 if (nbl_need_check(srcvp)) { 4748 nbl_start_crit(srcvp, RW_READER); 4749 in_crit_src = 1; 4750 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4751 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4752 goto err_out; 4753 } 4754 } 4755 4756 if (targvp && nbl_need_check(targvp)) { 4757 nbl_start_crit(targvp, RW_READER); 4758 in_crit_targ = 1; 4759 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4760 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4761 goto err_out; 4762 } 4763 } 4764 4765 /* Get source "before" change value */ 4766 obdva.va_mask = AT_CTIME|AT_SEQ; 4767 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4768 if (!error) { 4769 nbdva.va_mask = AT_CTIME|AT_SEQ; 4770 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4771 } 4772 if (error) { 4773 *cs->statusp = resp->status = puterrno4(error); 4774 goto err_out; 4775 } 4776 4777 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4778 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4779 4780 error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, cs->cr, 4781 NULL, 0); 4782 4783 /* 4784 * If target existed and was unlinked by VOP_RENAME, state will need 4785 * closed. To avoid deadlock, rfs4_close_all_state will be done after 4786 * any necessary nbl_end_crit on srcvp and tgtvp. 4787 */ 4788 if (error == 0 && fp != NULL) { 4789 rfs4_dbe_lock(fp->rf_dbe); 4790 tvp = fp->rf_vp; 4791 if (tvp) 4792 VN_HOLD(tvp); 4793 rfs4_dbe_unlock(fp->rf_dbe); 4794 4795 if (tvp) { 4796 struct vattr va; 4797 va.va_mask = AT_NLINK; 4798 4799 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4800 va.va_nlink == 0) { 4801 unlinked = 1; 4802 4803 /* DEBUG data */ 4804 if ((srcvp == targvp) || (tvp != targvp)) { 4805 cmn_err(CE_WARN, "rfs4_op_rename: " 4806 "srcvp %p, targvp: %p, tvp: %p", 4807 (void *)srcvp, (void *)targvp, 4808 (void *)tvp); 4809 } 4810 } else { 4811 VN_RELE(tvp); 4812 } 4813 } 4814 } 4815 if (error == 0) 4816 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4817 4818 if (in_crit_src) 4819 nbl_end_crit(srcvp); 4820 if (srcvp) 4821 VN_RELE(srcvp); 4822 if (in_crit_targ) 4823 nbl_end_crit(targvp); 4824 if (targvp) 4825 VN_RELE(targvp); 4826 4827 if (unlinked) { 4828 ASSERT(fp != NULL); 4829 ASSERT(tvp != NULL); 4830 4831 /* DEBUG data */ 4832 if (RW_READ_HELD(&tvp->v_nbllock)) { 4833 cmn_err(CE_WARN, "rfs4_op_rename: " 4834 "RW_READ_HELD(%p)", (void *)tvp); 4835 } 4836 4837 /* The file is gone and so should the state */ 4838 rfs4_close_all_state(fp); 4839 VN_RELE(tvp); 4840 } 4841 4842 if (sfp) { 4843 rfs4_clear_dont_grant(sfp); 4844 rfs4_file_rele(sfp); 4845 } 4846 if (fp) { 4847 rfs4_clear_dont_grant(fp); 4848 rfs4_file_rele(fp); 4849 } 4850 4851 if (converted_onm != onm) 4852 kmem_free(converted_onm, MAXPATHLEN + 1); 4853 kmem_free(onm, olen); 4854 if (converted_nnm != nnm) 4855 kmem_free(converted_nnm, MAXPATHLEN + 1); 4856 kmem_free(nnm, nlen); 4857 4858 /* 4859 * Get the initial "after" sequence number, if it fails, set to zero 4860 */ 4861 oidva.va_mask = AT_SEQ; 4862 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4863 oidva.va_seq = 0; 4864 4865 nidva.va_mask = AT_SEQ; 4866 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4867 nidva.va_seq = 0; 4868 4869 /* 4870 * Force modified data and metadata out to stable storage. 4871 */ 4872 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4873 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4874 4875 if (error) { 4876 *cs->statusp = resp->status = puterrno4(error); 4877 goto out; 4878 } 4879 4880 /* 4881 * Get "after" change values, if it fails, simply return the 4882 * before value. 4883 */ 4884 oadva.va_mask = AT_CTIME|AT_SEQ; 4885 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4886 oadva.va_ctime = obdva.va_ctime; 4887 oadva.va_seq = 0; 4888 } 4889 4890 nadva.va_mask = AT_CTIME|AT_SEQ; 4891 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4892 nadva.va_ctime = nbdva.va_ctime; 4893 nadva.va_seq = 0; 4894 } 4895 4896 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4897 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4898 4899 /* 4900 * The cinfo.atomic = TRUE only if we have 4901 * non-zero va_seq's, and it has incremented by exactly one 4902 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4903 */ 4904 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4905 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4906 resp->source_cinfo.atomic = TRUE; 4907 else 4908 resp->source_cinfo.atomic = FALSE; 4909 4910 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4911 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4912 resp->target_cinfo.atomic = TRUE; 4913 else 4914 resp->target_cinfo.atomic = FALSE; 4915 4916 #ifdef VOLATILE_FH_TEST 4917 { 4918 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4919 4920 /* 4921 * Add the renamed file handle to the volatile rename list 4922 */ 4923 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4924 /* file handles may expire on rename */ 4925 vnode_t *vp; 4926 4927 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4928 /* 4929 * Already know that nnm will be a valid string 4930 */ 4931 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4932 NULL, NULL, NULL); 4933 kmem_free(nnm, nlen); 4934 if (!error) { 4935 add_volrnm_fh(cs->exi, vp); 4936 VN_RELE(vp); 4937 } 4938 } 4939 } 4940 #endif /* VOLATILE_FH_TEST */ 4941 4942 *cs->statusp = resp->status = NFS4_OK; 4943 out: 4944 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4945 RENAME4res *, resp); 4946 return; 4947 4948 err_out: 4949 if (onm != converted_onm) 4950 kmem_free(converted_onm, MAXPATHLEN + 1); 4951 if (onm != NULL) 4952 kmem_free(onm, olen); 4953 if (nnm != converted_nnm) 4954 kmem_free(converted_nnm, MAXPATHLEN + 1); 4955 if (nnm != NULL) 4956 kmem_free(nnm, nlen); 4957 4958 if (in_crit_src) nbl_end_crit(srcvp); 4959 if (in_crit_targ) nbl_end_crit(targvp); 4960 if (targvp) VN_RELE(targvp); 4961 if (srcvp) VN_RELE(srcvp); 4962 if (sfp) { 4963 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4964 rfs4_file_rele(sfp); 4965 } 4966 if (fp) { 4967 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4968 rfs4_file_rele(fp); 4969 } 4970 4971 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4972 RENAME4res *, resp); 4973 } 4974 4975 /* ARGSUSED */ 4976 static void 4977 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4978 struct compound_state *cs) 4979 { 4980 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4981 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4982 rfs4_client_t *cp; 4983 4984 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4985 RENEW4args *, args); 4986 4987 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4988 *cs->statusp = resp->status = 4989 rfs4_check_clientid(&args->clientid, 0); 4990 goto out; 4991 } 4992 4993 if (rfs4_lease_expired(cp)) { 4994 rfs4_client_rele(cp); 4995 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4996 goto out; 4997 } 4998 4999 rfs4_update_lease(cp); 5000 5001 mutex_enter(cp->rc_cbinfo.cb_lock); 5002 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 5003 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 5004 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 5005 } else { 5006 *cs->statusp = resp->status = NFS4_OK; 5007 } 5008 mutex_exit(cp->rc_cbinfo.cb_lock); 5009 5010 rfs4_client_rele(cp); 5011 5012 out: 5013 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 5014 RENEW4res *, resp); 5015 } 5016 5017 /* ARGSUSED */ 5018 static void 5019 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 5020 struct compound_state *cs) 5021 { 5022 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 5023 5024 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 5025 5026 /* No need to check cs->access - we are not accessing any object */ 5027 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 5028 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 5029 goto out; 5030 } 5031 if (cs->vp != NULL) { 5032 VN_RELE(cs->vp); 5033 } 5034 cs->vp = cs->saved_vp; 5035 cs->saved_vp = NULL; 5036 cs->exi = cs->saved_exi; 5037 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 5038 *cs->statusp = resp->status = NFS4_OK; 5039 cs->deleg = FALSE; 5040 5041 out: 5042 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 5043 RESTOREFH4res *, resp); 5044 } 5045 5046 /* ARGSUSED */ 5047 static void 5048 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5049 struct compound_state *cs) 5050 { 5051 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 5052 5053 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 5054 5055 /* No need to check cs->access - we are not accessing any object */ 5056 if (cs->vp == NULL) { 5057 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5058 goto out; 5059 } 5060 if (cs->saved_vp != NULL) { 5061 VN_RELE(cs->saved_vp); 5062 } 5063 cs->saved_vp = cs->vp; 5064 VN_HOLD(cs->saved_vp); 5065 cs->saved_exi = cs->exi; 5066 /* 5067 * since SAVEFH is fairly rare, don't alloc space for its fh 5068 * unless necessary. 5069 */ 5070 if (cs->saved_fh.nfs_fh4_val == NULL) { 5071 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 5072 } 5073 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 5074 *cs->statusp = resp->status = NFS4_OK; 5075 5076 out: 5077 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 5078 SAVEFH4res *, resp); 5079 } 5080 5081 /* 5082 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 5083 * return the bitmap of attrs that were set successfully. It is also 5084 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 5085 * always be called only after rfs4_do_set_attrs(). 5086 * 5087 * Verify that the attributes are same as the expected ones. sargp->vap 5088 * and sargp->sbp contain the input attributes as translated from fattr4. 5089 * 5090 * This function verifies only the attrs that correspond to a vattr or 5091 * vfsstat struct. That is because of the extra step needed to get the 5092 * corresponding system structs. Other attributes have already been set or 5093 * verified by do_rfs4_set_attrs. 5094 * 5095 * Return 0 if all attrs match, -1 if some don't, error if error processing. 5096 */ 5097 static int 5098 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 5099 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 5100 { 5101 int error, ret_error = 0; 5102 int i, k; 5103 uint_t sva_mask = sargp->vap->va_mask; 5104 uint_t vbit; 5105 union nfs4_attr_u *na; 5106 uint8_t *amap; 5107 bool_t getsb = ntovp->vfsstat; 5108 5109 if (sva_mask != 0) { 5110 /* 5111 * Okay to overwrite sargp->vap because we verify based 5112 * on the incoming values. 5113 */ 5114 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 5115 sargp->cs->cr, NULL); 5116 if (ret_error) { 5117 if (resp == NULL) 5118 return (ret_error); 5119 /* 5120 * Must return bitmap of successful attrs 5121 */ 5122 sva_mask = 0; /* to prevent checking vap later */ 5123 } else { 5124 /* 5125 * Some file systems clobber va_mask. it is probably 5126 * wrong of them to do so, nonethless we practice 5127 * defensive coding. 5128 * See bug id 4276830. 5129 */ 5130 sargp->vap->va_mask = sva_mask; 5131 } 5132 } 5133 5134 if (getsb) { 5135 /* 5136 * Now get the superblock and loop on the bitmap, as there is 5137 * no simple way of translating from superblock to bitmap4. 5138 */ 5139 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 5140 if (ret_error) { 5141 if (resp == NULL) 5142 goto errout; 5143 getsb = FALSE; 5144 } 5145 } 5146 5147 /* 5148 * Now loop and verify each attribute which getattr returned 5149 * whether it's the same as the input. 5150 */ 5151 if (resp == NULL && !getsb && (sva_mask == 0)) 5152 goto errout; 5153 5154 na = ntovp->na; 5155 amap = ntovp->amap; 5156 k = 0; 5157 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 5158 k = *amap; 5159 ASSERT(nfs4_ntov_map[k].nval == k); 5160 vbit = nfs4_ntov_map[k].vbit; 5161 5162 /* 5163 * If vattr attribute but VOP_GETATTR failed, or it's 5164 * superblock attribute but VFS_STATVFS failed, skip 5165 */ 5166 if (vbit) { 5167 if ((vbit & sva_mask) == 0) 5168 continue; 5169 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 5170 continue; 5171 } 5172 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 5173 if (resp != NULL) { 5174 if (error) 5175 ret_error = -1; /* not all match */ 5176 else /* update response bitmap */ 5177 *resp |= nfs4_ntov_map[k].fbit; 5178 continue; 5179 } 5180 if (error) { 5181 ret_error = -1; /* not all match */ 5182 break; 5183 } 5184 } 5185 errout: 5186 return (ret_error); 5187 } 5188 5189 /* 5190 * Decode the attribute to be set/verified. If the attr requires a sys op 5191 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 5192 * call the sv_getit function for it, because the sys op hasn't yet been done. 5193 * Return 0 for success, error code if failed. 5194 * 5195 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 5196 */ 5197 static int 5198 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 5199 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 5200 { 5201 int error = 0; 5202 bool_t set_later; 5203 5204 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 5205 5206 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 5207 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 5208 /* 5209 * don't verify yet if a vattr or sb dependent attr, 5210 * because we don't have their sys values yet. 5211 * Will be done later. 5212 */ 5213 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 5214 /* 5215 * ACLs are a special case, since setting the MODE 5216 * conflicts with setting the ACL. We delay setting 5217 * the ACL until all other attributes have been set. 5218 * The ACL gets set in do_rfs4_op_setattr(). 5219 */ 5220 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5221 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5222 sargp, nap); 5223 if (error) { 5224 xdr_free(nfs4_ntov_map[k].xfunc, 5225 (caddr_t)nap); 5226 } 5227 } 5228 } 5229 } else { 5230 #ifdef DEBUG 5231 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5232 "decoding attribute %d\n", k); 5233 #endif 5234 error = EINVAL; 5235 } 5236 if (!error && resp_bval && !set_later) { 5237 *resp_bval |= nfs4_ntov_map[k].fbit; 5238 } 5239 5240 return (error); 5241 } 5242 5243 /* 5244 * Set vattr based on incoming fattr4 attrs - used by setattr. 5245 * Set response mask. Ignore any values that are not writable vattr attrs. 5246 */ 5247 static nfsstat4 5248 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5249 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5250 nfs4_attr_cmd_t cmd) 5251 { 5252 int error = 0; 5253 int i; 5254 char *attrs = fattrp->attrlist4; 5255 uint32_t attrslen = fattrp->attrlist4_len; 5256 XDR xdr; 5257 nfsstat4 status = NFS4_OK; 5258 vnode_t *vp = cs->vp; 5259 union nfs4_attr_u *na; 5260 uint8_t *amap; 5261 5262 #ifndef lint 5263 /* 5264 * Make sure that maximum attribute number can be expressed as an 5265 * 8 bit quantity. 5266 */ 5267 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5268 #endif 5269 5270 if (vp == NULL) { 5271 if (resp) 5272 *resp = 0; 5273 return (NFS4ERR_NOFILEHANDLE); 5274 } 5275 if (cs->access == CS_ACCESS_DENIED) { 5276 if (resp) 5277 *resp = 0; 5278 return (NFS4ERR_ACCESS); 5279 } 5280 5281 sargp->op = cmd; 5282 sargp->cs = cs; 5283 sargp->flag = 0; /* may be set later */ 5284 sargp->vap->va_mask = 0; 5285 sargp->rdattr_error = NFS4_OK; 5286 sargp->rdattr_error_req = FALSE; 5287 /* sargp->sbp is set by the caller */ 5288 5289 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5290 5291 na = ntovp->na; 5292 amap = ntovp->amap; 5293 5294 /* 5295 * The following loop iterates on the nfs4_ntov_map checking 5296 * if the fbit is set in the requested bitmap. 5297 * If set then we process the arguments using the 5298 * rfs4_fattr4 conversion functions to populate the setattr 5299 * vattr and va_mask. Any settable attrs that are not using vattr 5300 * will be set in this loop. 5301 */ 5302 for (i = 0; i < nfs4_ntov_map_size; i++) { 5303 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5304 continue; 5305 } 5306 /* 5307 * If setattr, must be a writable attr. 5308 * If verify/nverify, must be a readable attr. 5309 */ 5310 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5311 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5312 /* 5313 * Client tries to set/verify an 5314 * unsupported attribute, tries to set 5315 * a read only attr or verify a write 5316 * only one - error! 5317 */ 5318 break; 5319 } 5320 /* 5321 * Decode the attribute to set/verify 5322 */ 5323 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5324 &xdr, resp ? resp : NULL, na); 5325 if (error) 5326 break; 5327 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5328 na++; 5329 (ntovp->attrcnt)++; 5330 if (nfs4_ntov_map[i].vfsstat) 5331 ntovp->vfsstat = TRUE; 5332 } 5333 5334 if (error != 0) 5335 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5336 puterrno4(error)); 5337 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5338 return (status); 5339 } 5340 5341 static nfsstat4 5342 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5343 stateid4 *stateid) 5344 { 5345 int error = 0; 5346 struct nfs4_svgetit_arg sarg; 5347 bool_t trunc; 5348 5349 nfsstat4 status = NFS4_OK; 5350 cred_t *cr = cs->cr; 5351 vnode_t *vp = cs->vp; 5352 struct nfs4_ntov_table ntov; 5353 struct statvfs64 sb; 5354 struct vattr bva; 5355 struct flock64 bf; 5356 int in_crit = 0; 5357 uint_t saved_mask = 0; 5358 caller_context_t ct; 5359 5360 *resp = 0; 5361 sarg.sbp = &sb; 5362 sarg.is_referral = B_FALSE; 5363 nfs4_ntov_table_init(&ntov); 5364 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5365 NFS4ATTR_SETIT); 5366 if (status != NFS4_OK) { 5367 /* 5368 * failed set attrs 5369 */ 5370 goto done; 5371 } 5372 5373 if ((sarg.vap->va_mask == 0) && 5374 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5375 /* 5376 * no further work to be done 5377 */ 5378 goto done; 5379 } 5380 5381 /* 5382 * If we got a request to set the ACL and the MODE, only 5383 * allow changing VSUID, VSGID, and VSVTX. Attempting 5384 * to change any other bits, along with setting an ACL, 5385 * gives NFS4ERR_INVAL. 5386 */ 5387 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5388 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5389 vattr_t va; 5390 5391 va.va_mask = AT_MODE; 5392 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5393 if (error) { 5394 status = puterrno4(error); 5395 goto done; 5396 } 5397 if ((sarg.vap->va_mode ^ va.va_mode) & 5398 ~(VSUID | VSGID | VSVTX)) { 5399 status = NFS4ERR_INVAL; 5400 goto done; 5401 } 5402 } 5403 5404 /* Check stateid only if size has been set */ 5405 if (sarg.vap->va_mask & AT_SIZE) { 5406 trunc = (sarg.vap->va_size == 0); 5407 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5408 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct, cs); 5409 if (status != NFS4_OK) 5410 goto done; 5411 } else { 5412 ct.cc_sysid = 0; 5413 ct.cc_pid = 0; 5414 ct.cc_caller_id = nfs4_srv_caller_id; 5415 ct.cc_flags = CC_DONTBLOCK; 5416 } 5417 5418 /* XXX start of possible race with delegations */ 5419 5420 /* 5421 * We need to specially handle size changes because it is 5422 * possible for the client to create a file with read-only 5423 * modes, but with the file opened for writing. If the client 5424 * then tries to set the file size, e.g. ftruncate(3C), 5425 * fcntl(F_FREESP), the normal access checking done in 5426 * VOP_SETATTR would prevent the client from doing it even though 5427 * it should be allowed to do so. To get around this, we do the 5428 * access checking for ourselves and use VOP_SPACE which doesn't 5429 * do the access checking. 5430 * Also the client should not be allowed to change the file 5431 * size if there is a conflicting non-blocking mandatory lock in 5432 * the region of the change. 5433 */ 5434 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5435 u_offset_t offset; 5436 ssize_t length; 5437 5438 /* 5439 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5440 * before returning, sarg.vap->va_mask is used to 5441 * generate the setattr reply bitmap. We also clear 5442 * AT_SIZE below before calling VOP_SPACE. For both 5443 * of these cases, the va_mask needs to be saved here 5444 * and restored after calling VOP_SETATTR. 5445 */ 5446 saved_mask = sarg.vap->va_mask; 5447 5448 /* 5449 * Check any possible conflict due to NBMAND locks. 5450 * Get into critical region before VOP_GETATTR, so the 5451 * size attribute is valid when checking conflicts. 5452 */ 5453 if (nbl_need_check(vp)) { 5454 nbl_start_crit(vp, RW_READER); 5455 in_crit = 1; 5456 } 5457 5458 bva.va_mask = AT_UID|AT_SIZE; 5459 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5460 if (error != 0) { 5461 status = puterrno4(error); 5462 goto done; 5463 } 5464 5465 if (in_crit) { 5466 if (sarg.vap->va_size < bva.va_size) { 5467 offset = sarg.vap->va_size; 5468 length = bva.va_size - sarg.vap->va_size; 5469 } else { 5470 offset = bva.va_size; 5471 length = sarg.vap->va_size - bva.va_size; 5472 } 5473 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5474 &ct)) { 5475 status = NFS4ERR_LOCKED; 5476 goto done; 5477 } 5478 } 5479 5480 if (crgetuid(cr) == bva.va_uid) { 5481 sarg.vap->va_mask &= ~AT_SIZE; 5482 bf.l_type = F_WRLCK; 5483 bf.l_whence = 0; 5484 bf.l_start = (off64_t)sarg.vap->va_size; 5485 bf.l_len = 0; 5486 bf.l_sysid = 0; 5487 bf.l_pid = 0; 5488 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5489 (offset_t)sarg.vap->va_size, cr, &ct); 5490 } 5491 } 5492 5493 if (!error && sarg.vap->va_mask != 0) 5494 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5495 5496 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5497 if (saved_mask & AT_SIZE) 5498 sarg.vap->va_mask |= AT_SIZE; 5499 5500 /* 5501 * If an ACL was being set, it has been delayed until now, 5502 * in order to set the mode (via the VOP_SETATTR() above) first. 5503 */ 5504 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5505 int i; 5506 5507 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5508 if (ntov.amap[i] == FATTR4_ACL) 5509 break; 5510 if (i < NFS4_MAXNUM_ATTRS) { 5511 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5512 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5513 if (error == 0) { 5514 *resp |= FATTR4_ACL_MASK; 5515 } else if (error == ENOTSUP) { 5516 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5517 status = NFS4ERR_ATTRNOTSUPP; 5518 goto done; 5519 } 5520 } else { 5521 NFS4_DEBUG(rfs4_debug, 5522 (CE_NOTE, "do_rfs4_op_setattr: " 5523 "unable to find ACL in fattr4")); 5524 error = EINVAL; 5525 } 5526 } 5527 5528 if (error) { 5529 /* check if a monitor detected a delegation conflict */ 5530 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5531 status = NFS4ERR_DELAY; 5532 else 5533 status = puterrno4(error); 5534 5535 /* 5536 * Set the response bitmap when setattr failed. 5537 * If VOP_SETATTR partially succeeded, test by doing a 5538 * VOP_GETATTR on the object and comparing the data 5539 * to the setattr arguments. 5540 */ 5541 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5542 } else { 5543 /* 5544 * Force modified metadata out to stable storage. 5545 */ 5546 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5547 /* 5548 * Set response bitmap 5549 */ 5550 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5551 } 5552 5553 /* Return early and already have a NFSv4 error */ 5554 done: 5555 /* 5556 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5557 * conversion sets both readable and writeable NFS4 attrs 5558 * for AT_MTIME and AT_ATIME. The line below masks out 5559 * unrequested attrs from the setattr result bitmap. This 5560 * is placed after the done: label to catch the ATTRNOTSUP 5561 * case. 5562 */ 5563 *resp &= fattrp->attrmask; 5564 5565 if (in_crit) 5566 nbl_end_crit(vp); 5567 5568 nfs4_ntov_table_free(&ntov, &sarg); 5569 5570 return (status); 5571 } 5572 5573 /* ARGSUSED */ 5574 static void 5575 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5576 struct compound_state *cs) 5577 { 5578 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5579 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5580 bslabel_t *clabel; 5581 5582 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5583 SETATTR4args *, args); 5584 5585 if (cs->vp == NULL) { 5586 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5587 goto out; 5588 } 5589 5590 /* 5591 * If there is an unshared filesystem mounted on this vnode, 5592 * do not allow to setattr on this vnode. 5593 */ 5594 if (vn_ismntpt(cs->vp)) { 5595 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5596 goto out; 5597 } 5598 5599 resp->attrsset = 0; 5600 5601 if (rdonly4(req, cs)) { 5602 *cs->statusp = resp->status = NFS4ERR_ROFS; 5603 goto out; 5604 } 5605 5606 /* check label before setting attributes */ 5607 if (is_system_labeled()) { 5608 ASSERT(req->rq_label != NULL); 5609 clabel = req->rq_label; 5610 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5611 "got client label from request(1)", 5612 struct svc_req *, req); 5613 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5614 if (!do_rfs_label_check(clabel, cs->vp, 5615 EQUALITY_CHECK, cs->exi)) { 5616 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5617 goto out; 5618 } 5619 } 5620 } 5621 5622 *cs->statusp = resp->status = 5623 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5624 &args->stateid); 5625 5626 out: 5627 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5628 SETATTR4res *, resp); 5629 } 5630 5631 /* ARGSUSED */ 5632 static void 5633 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5634 struct compound_state *cs) 5635 { 5636 /* 5637 * verify and nverify are exactly the same, except that nverify 5638 * succeeds when some argument changed, and verify succeeds when 5639 * when none changed. 5640 */ 5641 5642 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5643 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5644 5645 int error; 5646 struct nfs4_svgetit_arg sarg; 5647 struct statvfs64 sb; 5648 struct nfs4_ntov_table ntov; 5649 5650 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5651 VERIFY4args *, args); 5652 5653 if (cs->vp == NULL) { 5654 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5655 goto out; 5656 } 5657 5658 sarg.sbp = &sb; 5659 sarg.is_referral = B_FALSE; 5660 nfs4_ntov_table_init(&ntov); 5661 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5662 &sarg, &ntov, NFS4ATTR_VERIT); 5663 if (resp->status != NFS4_OK) { 5664 /* 5665 * do_rfs4_set_attrs will try to verify systemwide attrs, 5666 * so could return -1 for "no match". 5667 */ 5668 if (resp->status == -1) 5669 resp->status = NFS4ERR_NOT_SAME; 5670 goto done; 5671 } 5672 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5673 switch (error) { 5674 case 0: 5675 resp->status = NFS4_OK; 5676 break; 5677 case -1: 5678 resp->status = NFS4ERR_NOT_SAME; 5679 break; 5680 default: 5681 resp->status = puterrno4(error); 5682 break; 5683 } 5684 done: 5685 *cs->statusp = resp->status; 5686 nfs4_ntov_table_free(&ntov, &sarg); 5687 out: 5688 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5689 VERIFY4res *, resp); 5690 } 5691 5692 /* ARGSUSED */ 5693 static void 5694 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5695 struct compound_state *cs) 5696 { 5697 /* 5698 * verify and nverify are exactly the same, except that nverify 5699 * succeeds when some argument changed, and verify succeeds when 5700 * when none changed. 5701 */ 5702 5703 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5704 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5705 5706 int error; 5707 struct nfs4_svgetit_arg sarg; 5708 struct statvfs64 sb; 5709 struct nfs4_ntov_table ntov; 5710 5711 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5712 NVERIFY4args *, args); 5713 5714 if (cs->vp == NULL) { 5715 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5716 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5717 NVERIFY4res *, resp); 5718 return; 5719 } 5720 sarg.sbp = &sb; 5721 sarg.is_referral = B_FALSE; 5722 nfs4_ntov_table_init(&ntov); 5723 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5724 &sarg, &ntov, NFS4ATTR_VERIT); 5725 if (resp->status != NFS4_OK) { 5726 /* 5727 * do_rfs4_set_attrs will try to verify systemwide attrs, 5728 * so could return -1 for "no match". 5729 */ 5730 if (resp->status == -1) 5731 resp->status = NFS4_OK; 5732 goto done; 5733 } 5734 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5735 switch (error) { 5736 case 0: 5737 resp->status = NFS4ERR_SAME; 5738 break; 5739 case -1: 5740 resp->status = NFS4_OK; 5741 break; 5742 default: 5743 resp->status = puterrno4(error); 5744 break; 5745 } 5746 done: 5747 *cs->statusp = resp->status; 5748 nfs4_ntov_table_free(&ntov, &sarg); 5749 5750 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5751 NVERIFY4res *, resp); 5752 } 5753 5754 /* 5755 * XXX - This should live in an NFS header file. 5756 */ 5757 #define MAX_IOVECS 12 5758 5759 /* ARGSUSED */ 5760 static void 5761 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5762 struct compound_state *cs) 5763 { 5764 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5765 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5766 int error; 5767 vnode_t *vp; 5768 struct vattr bva; 5769 u_offset_t rlimit; 5770 struct uio uio; 5771 struct iovec iov[MAX_IOVECS]; 5772 struct iovec *iovp; 5773 int iovcnt; 5774 int ioflag; 5775 cred_t *savecred, *cr; 5776 bool_t *deleg = &cs->deleg; 5777 nfsstat4 stat; 5778 int in_crit = 0; 5779 caller_context_t ct; 5780 nfs4_srv_t *nsrv4; 5781 5782 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5783 WRITE4args *, args); 5784 5785 vp = cs->vp; 5786 if (vp == NULL) { 5787 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5788 goto out; 5789 } 5790 if (cs->access == CS_ACCESS_DENIED) { 5791 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5792 goto out; 5793 } 5794 5795 cr = cs->cr; 5796 5797 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5798 deleg, TRUE, &ct, cs)) != NFS4_OK) { 5799 *cs->statusp = resp->status = stat; 5800 goto out; 5801 } 5802 5803 /* 5804 * We have to enter the critical region before calling VOP_RWLOCK 5805 * to avoid a deadlock with ufs. 5806 */ 5807 if (nbl_need_check(vp)) { 5808 nbl_start_crit(vp, RW_READER); 5809 in_crit = 1; 5810 if (nbl_conflict(vp, NBL_WRITE, 5811 args->offset, args->data_len, 0, &ct)) { 5812 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5813 goto out; 5814 } 5815 } 5816 5817 bva.va_mask = AT_MODE | AT_UID; 5818 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5819 5820 /* 5821 * If we can't get the attributes, then we can't do the 5822 * right access checking. So, we'll fail the request. 5823 */ 5824 if (error) { 5825 *cs->statusp = resp->status = puterrno4(error); 5826 goto out; 5827 } 5828 5829 if (rdonly4(req, cs)) { 5830 *cs->statusp = resp->status = NFS4ERR_ROFS; 5831 goto out; 5832 } 5833 5834 if (vp->v_type != VREG) { 5835 *cs->statusp = resp->status = 5836 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5837 goto out; 5838 } 5839 5840 if (crgetuid(cr) != bva.va_uid && 5841 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5842 *cs->statusp = resp->status = puterrno4(error); 5843 goto out; 5844 } 5845 5846 if (MANDLOCK(vp, bva.va_mode)) { 5847 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5848 goto out; 5849 } 5850 5851 nsrv4 = nfs4_get_srv(); 5852 if (args->data_len == 0) { 5853 *cs->statusp = resp->status = NFS4_OK; 5854 resp->count = 0; 5855 resp->committed = args->stable; 5856 resp->writeverf = nsrv4->write4verf; 5857 goto out; 5858 } 5859 5860 if (args->mblk != NULL) { 5861 mblk_t *m; 5862 uint_t bytes, round_len; 5863 5864 iovcnt = 0; 5865 bytes = 0; 5866 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5867 for (m = args->mblk; 5868 m != NULL && bytes < round_len; 5869 m = m->b_cont) { 5870 iovcnt++; 5871 bytes += MBLKL(m); 5872 } 5873 #ifdef DEBUG 5874 /* should have ended on an mblk boundary */ 5875 if (bytes != round_len) { 5876 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5877 bytes, round_len, args->data_len); 5878 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5879 (void *)args->mblk, (void *)m); 5880 ASSERT(bytes == round_len); 5881 } 5882 #endif 5883 if (iovcnt <= MAX_IOVECS) { 5884 iovp = iov; 5885 } else { 5886 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5887 } 5888 mblk_to_iov(args->mblk, iovcnt, iovp); 5889 } else if (args->rlist != NULL) { 5890 iovcnt = 1; 5891 iovp = iov; 5892 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5893 iovp->iov_len = args->data_len; 5894 } else { 5895 iovcnt = 1; 5896 iovp = iov; 5897 iovp->iov_base = args->data_val; 5898 iovp->iov_len = args->data_len; 5899 } 5900 5901 uio.uio_iov = iovp; 5902 uio.uio_iovcnt = iovcnt; 5903 5904 uio.uio_segflg = UIO_SYSSPACE; 5905 uio.uio_extflg = UIO_COPY_DEFAULT; 5906 uio.uio_loffset = args->offset; 5907 uio.uio_resid = args->data_len; 5908 uio.uio_llimit = curproc->p_fsz_ctl; 5909 rlimit = uio.uio_llimit - args->offset; 5910 if (rlimit < (u_offset_t)uio.uio_resid) 5911 uio.uio_resid = (int)rlimit; 5912 5913 if (args->stable == UNSTABLE4) 5914 ioflag = 0; 5915 else if (args->stable == FILE_SYNC4) 5916 ioflag = FSYNC; 5917 else if (args->stable == DATA_SYNC4) 5918 ioflag = FDSYNC; 5919 else { 5920 if (iovp != iov) 5921 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5922 *cs->statusp = resp->status = NFS4ERR_INVAL; 5923 goto out; 5924 } 5925 5926 /* 5927 * We're changing creds because VM may fault and we need 5928 * the cred of the current thread to be used if quota 5929 * checking is enabled. 5930 */ 5931 savecred = curthread->t_cred; 5932 curthread->t_cred = cr; 5933 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5934 curthread->t_cred = savecred; 5935 5936 if (iovp != iov) 5937 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5938 5939 if (error) { 5940 *cs->statusp = resp->status = puterrno4(error); 5941 goto out; 5942 } 5943 5944 *cs->statusp = resp->status = NFS4_OK; 5945 resp->count = args->data_len - uio.uio_resid; 5946 5947 if (ioflag == 0) 5948 resp->committed = UNSTABLE4; 5949 else 5950 resp->committed = FILE_SYNC4; 5951 5952 resp->writeverf = nsrv4->write4verf; 5953 5954 out: 5955 if (in_crit) 5956 nbl_end_crit(vp); 5957 5958 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5959 WRITE4res *, resp); 5960 } 5961 5962 static inline int 5963 rfs4_opnum_in_range(const compound_state_t *cs, int opnum) 5964 { 5965 if (opnum < FIRST_NFS4_OP || opnum > LAST_NFS4_OP) 5966 return (0); 5967 else if (cs->minorversion == 0 && opnum > LAST_NFS40_OP) 5968 return (0); 5969 else if (cs->minorversion == 1 && opnum > LAST_NFS41_OP) 5970 return (0); 5971 else if (cs->minorversion == 2 && opnum > LAST_NFS42_OP) 5972 return (0); 5973 return (1); 5974 } 5975 5976 void 5977 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, compound_state_t *cs, 5978 struct svc_req *req, int *rv) 5979 { 5980 uint_t i; 5981 cred_t *cr; 5982 nfs4_srv_t *nsrv4; 5983 nfs_export_t *ne = nfs_get_export(); 5984 5985 if (rv != NULL) 5986 *rv = 0; 5987 /* 5988 * Form a reply tag by copying over the request tag. 5989 */ 5990 resp->tag.utf8string_len = args->tag.utf8string_len; 5991 if (args->tag.utf8string_len != 0) { 5992 resp->tag.utf8string_val = 5993 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5994 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5995 resp->tag.utf8string_len); 5996 } else { 5997 resp->tag.utf8string_val = NULL; 5998 } 5999 6000 cs->statusp = &resp->status; 6001 cs->req = req; 6002 cs->minorversion = args->minorversion; 6003 resp->array = NULL; 6004 resp->array_len = 0; 6005 6006 if (args->array_len == 0) { 6007 resp->status = NFS4_OK; 6008 return; 6009 } 6010 6011 cr = svc_xprt_cred(req->rq_xprt); 6012 ASSERT(cr != NULL); 6013 6014 if (sec_svc_getcred(req, cr, &cs->principal, &cs->nfsflavor) == 0) { 6015 DTRACE_NFSV4_2(compound__start, struct compound_state *, 6016 cs, COMPOUND4args *, args); 6017 DTRACE_NFSV4_2(compound__done, struct compound_state *, 6018 cs, COMPOUND4res *, resp); 6019 svcerr_badcred(req->rq_xprt); 6020 if (rv != NULL) 6021 *rv = 1; 6022 return; 6023 } 6024 6025 resp->array_len = args->array_len; 6026 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 6027 KM_SLEEP); 6028 6029 cs->op_len = args->array_len; 6030 cs->basecr = cr; 6031 nsrv4 = nfs4_get_srv(); 6032 6033 DTRACE_NFSV4_2(compound__start, struct compound_state *, cs, 6034 COMPOUND4args *, args); 6035 6036 /* 6037 * For now, NFS4 compound processing must be protected by 6038 * exported_lock because it can access more than one exportinfo 6039 * per compound and share/unshare can now change multiple 6040 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 6041 * per proc (excluding public exinfo), and exi_count design 6042 * is sufficient to protect concurrent execution of NFS2/3 6043 * ops along with unexport. This lock will be removed as 6044 * part of the NFSv4 phase 2 namespace redesign work. 6045 */ 6046 rw_enter(&ne->exported_lock, RW_READER); 6047 6048 /* 6049 * If this is the first compound we've seen, we need to start all 6050 * new instances' grace periods. 6051 */ 6052 if (nsrv4->seen_first_compound == 0) { 6053 rfs4_grace_start_new(nsrv4); 6054 /* 6055 * This must be set after rfs4_grace_start_new(), otherwise 6056 * another thread could proceed past here before the former 6057 * is finished. 6058 */ 6059 nsrv4->seen_first_compound = 1; 6060 } 6061 6062 for (i = 0; i < args->array_len && cs->cont; i++) { 6063 nfs_argop4 *argop; 6064 nfs_resop4 *resop; 6065 uint_t op; 6066 kstat_named_t *stat = ne->ne_globals->rfsproccnt[NFS_V4]; 6067 6068 argop = &args->array[i]; 6069 resop = &resp->array[i]; 6070 resop->resop = argop->argop; 6071 op = (uint_t)resop->resop; 6072 6073 cs->op_pos = i; 6074 if (op < rfsv4disp_cnt && rfs4_opnum_in_range(cs, op)) { 6075 /* 6076 * Count the individual ops here; NULL and COMPOUND 6077 * are counted in common_dispatch() 6078 */ 6079 stat[op].value.ui64++; 6080 6081 NFS4_DEBUG(rfs4_debug > 1, 6082 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 6083 (*rfsv4disptab[op].dis_proc)(argop, resop, req, cs); 6084 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 6085 rfs4_op_string[op], *cs->statusp)); 6086 if (*cs->statusp != NFS4_OK) 6087 cs->cont = FALSE; 6088 } else { 6089 /* 6090 * This is effectively dead code since XDR code 6091 * will have already returned BADXDR if op doesn't 6092 * decode to legal value. This only done for a 6093 * day when XDR code doesn't verify v4 opcodes. 6094 */ 6095 op = OP_ILLEGAL; 6096 stat[OP_ILLEGAL_IDX].value.ui64++; 6097 6098 rfs4_op_illegal(argop, resop, req, cs); 6099 cs->cont = FALSE; 6100 } 6101 6102 /* 6103 * If not at last op, and if we are to stop, then 6104 * compact the results array. 6105 */ 6106 if ((i + 1) < args->array_len && !cs->cont) { 6107 nfs_resop4 *new_res = kmem_alloc( 6108 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 6109 bcopy(resp->array, 6110 new_res, (i+1) * sizeof (nfs_resop4)); 6111 kmem_free(resp->array, 6112 args->array_len * sizeof (nfs_resop4)); 6113 6114 resp->array_len = i + 1; 6115 resp->array = new_res; 6116 } 6117 } 6118 6119 rw_exit(&ne->exported_lock); 6120 6121 DTRACE_NFSV4_2(compound__done, struct compound_state *, cs, 6122 COMPOUND4res *, resp); 6123 6124 /* 6125 * done with this compound request, free the label 6126 */ 6127 6128 if (req->rq_label != NULL) { 6129 kmem_free(req->rq_label, sizeof (bslabel_t)); 6130 req->rq_label = NULL; 6131 } 6132 } 6133 6134 /* 6135 * XXX because of what appears to be duplicate calls to rfs4_compound_free 6136 * XXX zero out the tag and array values. Need to investigate why the 6137 * XXX calls occur, but at least prevent the panic for now. 6138 */ 6139 void 6140 rfs4_compound_free(COMPOUND4res *resp) 6141 { 6142 uint_t i; 6143 6144 if (resp->tag.utf8string_val) { 6145 UTF8STRING_FREE(resp->tag) 6146 } 6147 6148 for (i = 0; i < resp->array_len; i++) { 6149 nfs_resop4 *resop; 6150 uint_t op; 6151 6152 resop = &resp->array[i]; 6153 op = (uint_t)resop->resop; 6154 if (op < rfsv4disp_cnt) { 6155 (*rfsv4disptab[op].dis_resfree)(resop); 6156 } 6157 } 6158 if (resp->array != NULL) { 6159 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 6160 } 6161 } 6162 6163 /* 6164 * Process the value of the compound request rpc flags, as a bit-AND 6165 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 6166 */ 6167 void 6168 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 6169 { 6170 int i; 6171 int flag = RPC_ALL; 6172 6173 for (i = 0; flag && i < args->array_len; i++) { 6174 uint_t op; 6175 6176 op = (uint_t)args->array[i].argop; 6177 6178 if (op < rfsv4disp_cnt) 6179 flag &= rfsv4disptab[op].dis_flags; 6180 else 6181 flag = 0; 6182 } 6183 *flagp = flag; 6184 } 6185 6186 nfsstat4 6187 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 6188 { 6189 nfsstat4 e; 6190 6191 rfs4_dbe_lock(cp->rc_dbe); 6192 6193 if (cp->rc_sysidt != LM_NOSYSID) { 6194 *sp = cp->rc_sysidt; 6195 e = NFS4_OK; 6196 6197 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 6198 *sp = cp->rc_sysidt; 6199 e = NFS4_OK; 6200 6201 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6202 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 6203 } else 6204 e = NFS4ERR_DELAY; 6205 6206 rfs4_dbe_unlock(cp->rc_dbe); 6207 return (e); 6208 } 6209 6210 #if defined(DEBUG) && ! defined(lint) 6211 static void lock_print(char *str, int operation, struct flock64 *flk) 6212 { 6213 char *op, *type; 6214 6215 switch (operation) { 6216 case F_GETLK: op = "F_GETLK"; 6217 break; 6218 case F_SETLK: op = "F_SETLK"; 6219 break; 6220 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6221 break; 6222 default: op = "F_UNKNOWN"; 6223 break; 6224 } 6225 switch (flk->l_type) { 6226 case F_UNLCK: type = "F_UNLCK"; 6227 break; 6228 case F_RDLCK: type = "F_RDLCK"; 6229 break; 6230 case F_WRLCK: type = "F_WRLCK"; 6231 break; 6232 default: type = "F_UNKNOWN"; 6233 break; 6234 } 6235 6236 ASSERT(flk->l_whence == 0); 6237 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6238 str, op, type, (longlong_t)flk->l_start, 6239 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6240 } 6241 6242 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6243 #else 6244 #define LOCK_PRINT(d, s, t, f) 6245 #endif 6246 6247 /*ARGSUSED*/ 6248 static bool_t 6249 creds_ok(cred_set_t *cr_set, struct svc_req *req, struct compound_state *cs) 6250 { 6251 return (TRUE); 6252 } 6253 6254 /* 6255 * Look up the pathname using the vp in cs as the directory vnode. 6256 * cs->vp will be the vnode for the file on success 6257 */ 6258 6259 static nfsstat4 6260 rfs4_lookup(component4 *component, struct svc_req *req, 6261 struct compound_state *cs) 6262 { 6263 char *nm; 6264 uint32_t len; 6265 nfsstat4 status; 6266 struct sockaddr *ca; 6267 char *name; 6268 6269 if (cs->vp == NULL) { 6270 return (NFS4ERR_NOFILEHANDLE); 6271 } 6272 if (cs->vp->v_type != VDIR) { 6273 return (NFS4ERR_NOTDIR); 6274 } 6275 6276 status = utf8_dir_verify(component); 6277 if (status != NFS4_OK) 6278 return (status); 6279 6280 nm = utf8_to_fn(component, &len, NULL); 6281 if (nm == NULL) { 6282 return (NFS4ERR_INVAL); 6283 } 6284 6285 if (len > MAXNAMELEN) { 6286 kmem_free(nm, len); 6287 return (NFS4ERR_NAMETOOLONG); 6288 } 6289 6290 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6291 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6292 MAXPATHLEN + 1); 6293 6294 if (name == NULL) { 6295 kmem_free(nm, len); 6296 return (NFS4ERR_INVAL); 6297 } 6298 6299 status = do_rfs4_op_lookup(name, req, cs); 6300 6301 if (name != nm) 6302 kmem_free(name, MAXPATHLEN + 1); 6303 6304 kmem_free(nm, len); 6305 6306 return (status); 6307 } 6308 6309 static nfsstat4 6310 rfs4_lookupfile(component4 *component, struct svc_req *req, 6311 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6312 { 6313 nfsstat4 status; 6314 vnode_t *dvp = cs->vp; 6315 vattr_t bva, ava, fva; 6316 int error; 6317 6318 /* Get "before" change value */ 6319 bva.va_mask = AT_CTIME|AT_SEQ; 6320 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6321 if (error) 6322 return (puterrno4(error)); 6323 6324 /* rfs4_lookup may VN_RELE directory */ 6325 VN_HOLD(dvp); 6326 6327 status = rfs4_lookup(component, req, cs); 6328 if (status != NFS4_OK) { 6329 VN_RELE(dvp); 6330 return (status); 6331 } 6332 6333 /* 6334 * Get "after" change value, if it fails, simply return the 6335 * before value. 6336 */ 6337 ava.va_mask = AT_CTIME|AT_SEQ; 6338 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6339 ava.va_ctime = bva.va_ctime; 6340 ava.va_seq = 0; 6341 } 6342 VN_RELE(dvp); 6343 6344 /* 6345 * Validate the file is a file 6346 */ 6347 fva.va_mask = AT_TYPE|AT_MODE; 6348 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6349 if (error) 6350 return (puterrno4(error)); 6351 6352 if (fva.va_type != VREG) { 6353 if (fva.va_type == VDIR) 6354 return (NFS4ERR_ISDIR); 6355 if (fva.va_type == VLNK) 6356 return (NFS4ERR_SYMLINK); 6357 return (NFS4ERR_INVAL); 6358 } 6359 6360 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6361 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6362 6363 /* 6364 * It is undefined if VOP_LOOKUP will change va_seq, so 6365 * cinfo.atomic = TRUE only if we have 6366 * non-zero va_seq's, and they have not changed. 6367 */ 6368 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6369 cinfo->atomic = TRUE; 6370 else 6371 cinfo->atomic = FALSE; 6372 6373 /* Check for mandatory locking */ 6374 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6375 return (check_open_access(access, cs, req)); 6376 } 6377 6378 static nfsstat4 6379 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6380 cred_t *cr, vnode_t **vpp, bool_t *created) 6381 { 6382 int error; 6383 nfsstat4 status = NFS4_OK; 6384 vattr_t va; 6385 6386 tryagain: 6387 6388 /* 6389 * The file open mode used is VWRITE. If the client needs 6390 * some other semantic, then it should do the access checking 6391 * itself. It would have been nice to have the file open mode 6392 * passed as part of the arguments. 6393 */ 6394 6395 *created = TRUE; 6396 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6397 6398 if (error) { 6399 *created = FALSE; 6400 6401 /* 6402 * If we got something other than file already exists 6403 * then just return this error. Otherwise, we got 6404 * EEXIST. If we were doing a GUARDED create, then 6405 * just return this error. Otherwise, we need to 6406 * make sure that this wasn't a duplicate of an 6407 * exclusive create request. 6408 * 6409 * The assumption is made that a non-exclusive create 6410 * request will never return EEXIST. 6411 */ 6412 6413 if (error != EEXIST || mode == GUARDED4) { 6414 status = puterrno4(error); 6415 return (status); 6416 } 6417 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6418 NULL, NULL, NULL); 6419 6420 if (error) { 6421 /* 6422 * We couldn't find the file that we thought that 6423 * we just created. So, we'll just try creating 6424 * it again. 6425 */ 6426 if (error == ENOENT) 6427 goto tryagain; 6428 6429 status = puterrno4(error); 6430 return (status); 6431 } 6432 6433 if (mode == UNCHECKED4) { 6434 /* existing object must be regular file */ 6435 if ((*vpp)->v_type != VREG) { 6436 if ((*vpp)->v_type == VDIR) 6437 status = NFS4ERR_ISDIR; 6438 else if ((*vpp)->v_type == VLNK) 6439 status = NFS4ERR_SYMLINK; 6440 else 6441 status = NFS4ERR_INVAL; 6442 VN_RELE(*vpp); 6443 return (status); 6444 } 6445 6446 return (NFS4_OK); 6447 } 6448 6449 /* Check for duplicate request */ 6450 va.va_mask = AT_MTIME; 6451 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6452 if (!error) { 6453 /* We found the file */ 6454 const timestruc_t *mtime = &vap->va_mtime; 6455 6456 if (va.va_mtime.tv_sec != mtime->tv_sec || 6457 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6458 /* but its not our creation */ 6459 VN_RELE(*vpp); 6460 return (NFS4ERR_EXIST); 6461 } 6462 *created = TRUE; /* retrans of create == created */ 6463 return (NFS4_OK); 6464 } 6465 VN_RELE(*vpp); 6466 return (NFS4ERR_EXIST); 6467 } 6468 6469 return (NFS4_OK); 6470 } 6471 6472 static nfsstat4 6473 check_open_access(uint32_t access, struct compound_state *cs, 6474 struct svc_req *req) 6475 { 6476 int error; 6477 vnode_t *vp; 6478 bool_t readonly; 6479 cred_t *cr = cs->cr; 6480 6481 /* For now we don't allow mandatory locking as per V2/V3 */ 6482 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6483 return (NFS4ERR_ACCESS); 6484 } 6485 6486 vp = cs->vp; 6487 ASSERT(cr != NULL && vp->v_type == VREG); 6488 6489 /* 6490 * If the file system is exported read only and we are trying 6491 * to open for write, then return NFS4ERR_ROFS 6492 */ 6493 6494 readonly = rdonly4(req, cs); 6495 6496 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6497 return (NFS4ERR_ROFS); 6498 6499 if (access & OPEN4_SHARE_ACCESS_READ) { 6500 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6501 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6502 return (NFS4ERR_ACCESS); 6503 } 6504 } 6505 6506 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6507 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6508 if (error) 6509 return (NFS4ERR_ACCESS); 6510 } 6511 6512 return (NFS4_OK); 6513 } 6514 6515 static void 6516 rfs4_verifier_to_mtime(verifier4 v, timestruc_t *mtime) 6517 { 6518 timespec32_t *time = (timespec32_t *)&v; 6519 6520 /* 6521 * Ensure no time overflows. Assumes underlying 6522 * filesystem supports at least 32 bits. 6523 * Truncate nsec to usec resolution to allow valid 6524 * compares even if the underlying filesystem truncates. 6525 */ 6526 mtime->tv_sec = time->tv_sec % TIME32_MAX; 6527 mtime->tv_nsec = (time->tv_nsec / 1000) * 1000; 6528 } 6529 6530 static nfsstat4 6531 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6532 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6533 { 6534 struct nfs4_svgetit_arg sarg; 6535 struct nfs4_ntov_table ntov; 6536 6537 bool_t ntov_table_init = FALSE; 6538 struct statvfs64 sb; 6539 nfsstat4 status; 6540 vnode_t *vp; 6541 vattr_t bva, ava, iva, cva, *vap; 6542 vnode_t *dvp; 6543 char *nm = NULL; 6544 uint_t buflen; 6545 bool_t created; 6546 bool_t setsize = FALSE; 6547 len_t reqsize; 6548 int error; 6549 bool_t trunc; 6550 caller_context_t ct; 6551 component4 *component; 6552 bslabel_t *clabel; 6553 struct sockaddr *ca; 6554 char *name = NULL; 6555 fattr4 *fattr = NULL; 6556 6557 ASSERT(*attrset == 0); 6558 6559 sarg.sbp = &sb; 6560 sarg.is_referral = B_FALSE; 6561 6562 dvp = cs->vp; 6563 6564 /* Check if the file system is read only */ 6565 if (rdonly4(req, cs)) 6566 return (NFS4ERR_ROFS); 6567 6568 /* check the label of including directory */ 6569 if (is_system_labeled()) { 6570 ASSERT(req->rq_label != NULL); 6571 clabel = req->rq_label; 6572 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6573 "got client label from request(1)", 6574 struct svc_req *, req); 6575 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6576 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6577 cs->exi)) { 6578 return (NFS4ERR_ACCESS); 6579 } 6580 } 6581 } 6582 6583 if ((args->mode == EXCLUSIVE4 || args->mode == EXCLUSIVE4_1) && 6584 dvp->v_flag & V_XATTRDIR) { 6585 /* prohibit EXCL create of named attributes */ 6586 return (NFS4ERR_INVAL); 6587 } 6588 6589 /* 6590 * Get the last component of path name in nm. cs will reference 6591 * the including directory on success. 6592 */ 6593 component = &args->claim.open_claim4_u.file; 6594 status = utf8_dir_verify(component); 6595 if (status != NFS4_OK) 6596 return (status); 6597 6598 nm = utf8_to_fn(component, &buflen, NULL); 6599 6600 if (nm == NULL) 6601 return (NFS4ERR_RESOURCE); 6602 6603 if (buflen > MAXNAMELEN) { 6604 kmem_free(nm, buflen); 6605 return (NFS4ERR_NAMETOOLONG); 6606 } 6607 6608 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6609 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6610 if (error) { 6611 kmem_free(nm, buflen); 6612 return (puterrno4(error)); 6613 } 6614 6615 if (bva.va_type != VDIR) { 6616 kmem_free(nm, buflen); 6617 return (NFS4ERR_NOTDIR); 6618 } 6619 6620 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6621 6622 switch (args->mode) { 6623 case GUARDED4: 6624 /*FALLTHROUGH*/ 6625 case UNCHECKED4: 6626 case EXCLUSIVE4_1: 6627 nfs4_ntov_table_init(&ntov); 6628 ntov_table_init = TRUE; 6629 6630 if (args->mode == EXCLUSIVE4_1) 6631 fattr = &args->createhow4_u.ch_createboth.cva_attrs; 6632 else 6633 fattr = &args->createhow4_u.createattrs; 6634 6635 status = do_rfs4_set_attrs(attrset, 6636 fattr, 6637 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6638 6639 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6640 sarg.vap->va_type != VREG) { 6641 if (sarg.vap->va_type == VDIR) 6642 status = NFS4ERR_ISDIR; 6643 else if (sarg.vap->va_type == VLNK) 6644 status = NFS4ERR_SYMLINK; 6645 else 6646 status = NFS4ERR_INVAL; 6647 } 6648 6649 if (status != NFS4_OK) { 6650 kmem_free(nm, buflen); 6651 nfs4_ntov_table_free(&ntov, &sarg); 6652 *attrset = 0; 6653 return (status); 6654 } 6655 6656 vap = sarg.vap; 6657 vap->va_type = VREG; 6658 vap->va_mask |= AT_TYPE; 6659 6660 if ((vap->va_mask & AT_MODE) == 0) { 6661 vap->va_mask |= AT_MODE; 6662 vap->va_mode = (mode_t)0600; 6663 } 6664 6665 if (vap->va_mask & AT_SIZE) { 6666 6667 /* Disallow create with a non-zero size */ 6668 6669 if ((reqsize = sarg.vap->va_size) != 0) { 6670 kmem_free(nm, buflen); 6671 nfs4_ntov_table_free(&ntov, &sarg); 6672 *attrset = 0; 6673 return (NFS4ERR_INVAL); 6674 } 6675 setsize = TRUE; 6676 } 6677 if (args->mode == EXCLUSIVE4_1) { 6678 rfs4_verifier_to_mtime( 6679 args->createhow4_u.ch_createboth.cva_verf, 6680 &vap->va_mtime); 6681 /* attrset will be set later */ 6682 fattr->attrmask |= FATTR4_TIME_MODIFY_MASK; 6683 vap->va_mask |= AT_MTIME; 6684 } 6685 break; 6686 6687 case EXCLUSIVE4: 6688 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6689 cva.va_type = VREG; 6690 cva.va_mode = (mode_t)0; 6691 6692 rfs4_verifier_to_mtime(args->createhow4_u.createverf, 6693 &cva.va_mtime); 6694 6695 vap = &cva; 6696 6697 /* 6698 * For EXCL create, attrset is set to the server attr 6699 * used to cache the client's verifier. 6700 */ 6701 *attrset = FATTR4_TIME_MODIFY_MASK; 6702 break; 6703 } 6704 6705 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6706 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6707 MAXPATHLEN + 1); 6708 6709 if (name == NULL) { 6710 kmem_free(nm, buflen); 6711 return (NFS4ERR_SERVERFAULT); 6712 } 6713 6714 status = create_vnode(dvp, name, vap, args->mode, 6715 cs->cr, &vp, &created); 6716 if (nm != name) 6717 kmem_free(name, MAXPATHLEN + 1); 6718 kmem_free(nm, buflen); 6719 6720 if (status != NFS4_OK) { 6721 if (ntov_table_init) 6722 nfs4_ntov_table_free(&ntov, &sarg); 6723 *attrset = 0; 6724 return (status); 6725 } 6726 6727 trunc = (setsize && !created); 6728 6729 if (args->mode != EXCLUSIVE4) { 6730 bitmap4 createmask = fattr->attrmask; 6731 6732 /* 6733 * True verification that object was created with correct 6734 * attrs is impossible. The attrs could have been changed 6735 * immediately after object creation. If attributes did 6736 * not verify, the only recourse for the server is to 6737 * destroy the object. Maybe if some attrs (like gid) 6738 * are set incorrectly, the object should be destroyed; 6739 * however, seems bad as a default policy. Do we really 6740 * want to destroy an object over one of the times not 6741 * verifying correctly? For these reasons, the server 6742 * currently sets bits in attrset for createattrs 6743 * that were set; however, no verification is done. 6744 * 6745 * vmask_to_nmask accounts for vattr bits set on create 6746 * [do_rfs4_set_attrs() only sets resp bits for 6747 * non-vattr/vfs bits.] 6748 * Mask off any bits we set by default so as not to return 6749 * more attrset bits than were requested in createattrs 6750 */ 6751 if (created) { 6752 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6753 *attrset &= createmask; 6754 } else { 6755 /* 6756 * We did not create the vnode (we tried but it 6757 * already existed). In this case, the only createattr 6758 * that the spec allows the server to set is size, 6759 * and even then, it can only be set if it is 0. 6760 */ 6761 *attrset = 0; 6762 if (trunc) 6763 *attrset = FATTR4_SIZE_MASK; 6764 } 6765 } 6766 if (ntov_table_init) 6767 nfs4_ntov_table_free(&ntov, &sarg); 6768 6769 /* 6770 * Get the initial "after" sequence number, if it fails, 6771 * set to zero, time to before. 6772 */ 6773 iva.va_mask = AT_CTIME|AT_SEQ; 6774 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6775 iva.va_seq = 0; 6776 iva.va_ctime = bva.va_ctime; 6777 } 6778 6779 /* 6780 * create_vnode attempts to create the file exclusive, 6781 * if it already exists the VOP_CREATE will fail and 6782 * may not increase va_seq. It is atomic if 6783 * we haven't changed the directory, but if it has changed 6784 * we don't know what changed it. 6785 */ 6786 if (!created) { 6787 if (bva.va_seq && iva.va_seq && 6788 bva.va_seq == iva.va_seq) 6789 cinfo->atomic = TRUE; 6790 else 6791 cinfo->atomic = FALSE; 6792 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6793 } else { 6794 /* 6795 * The entry was created, we need to sync the 6796 * directory metadata. 6797 */ 6798 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6799 6800 /* 6801 * Get "after" change value, if it fails, simply return the 6802 * before value. 6803 */ 6804 ava.va_mask = AT_CTIME|AT_SEQ; 6805 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6806 ava.va_ctime = bva.va_ctime; 6807 ava.va_seq = 0; 6808 } 6809 6810 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6811 6812 /* 6813 * The cinfo->atomic = TRUE only if we have 6814 * non-zero va_seq's, and it has incremented by exactly one 6815 * during the create_vnode and it didn't 6816 * change during the VOP_FSYNC. 6817 */ 6818 if (bva.va_seq && iva.va_seq && ava.va_seq && 6819 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6820 cinfo->atomic = TRUE; 6821 else 6822 cinfo->atomic = FALSE; 6823 } 6824 6825 /* Check for mandatory locking and that the size gets set. */ 6826 cva.va_mask = AT_MODE; 6827 if (setsize) 6828 cva.va_mask |= AT_SIZE; 6829 6830 /* Assume the worst */ 6831 cs->mandlock = TRUE; 6832 6833 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6834 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6835 6836 /* 6837 * Truncate the file if necessary; this would be 6838 * the case for create over an existing file. 6839 */ 6840 6841 if (trunc) { 6842 int in_crit = 0; 6843 rfs4_file_t *fp; 6844 nfs4_srv_t *nsrv4; 6845 bool_t create = FALSE; 6846 6847 /* 6848 * We are writing over an existing file. 6849 * Check to see if we need to recall a delegation. 6850 */ 6851 nsrv4 = nfs4_get_srv(); 6852 rfs4_hold_deleg_policy(nsrv4); 6853 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6854 if (rfs4_check_delegated_byfp(FWRITE, fp, 6855 (reqsize == 0), FALSE, FALSE, &clientid)) { 6856 rfs4_file_rele(fp); 6857 rfs4_rele_deleg_policy(nsrv4); 6858 VN_RELE(vp); 6859 *attrset = 0; 6860 return (NFS4ERR_DELAY); 6861 } 6862 rfs4_file_rele(fp); 6863 } 6864 rfs4_rele_deleg_policy(nsrv4); 6865 6866 if (nbl_need_check(vp)) { 6867 in_crit = 1; 6868 6869 ASSERT(reqsize == 0); 6870 6871 nbl_start_crit(vp, RW_READER); 6872 if (nbl_conflict(vp, NBL_WRITE, 0, 6873 cva.va_size, 0, NULL)) { 6874 in_crit = 0; 6875 nbl_end_crit(vp); 6876 VN_RELE(vp); 6877 *attrset = 0; 6878 return (NFS4ERR_ACCESS); 6879 } 6880 } 6881 ct.cc_sysid = 0; 6882 ct.cc_pid = 0; 6883 ct.cc_caller_id = nfs4_srv_caller_id; 6884 ct.cc_flags = CC_DONTBLOCK; 6885 6886 cva.va_mask = AT_SIZE; 6887 cva.va_size = reqsize; 6888 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6889 if (in_crit) 6890 nbl_end_crit(vp); 6891 } 6892 } 6893 6894 error = makefh4(&cs->fh, vp, cs->exi); 6895 6896 /* 6897 * Force modified data and metadata out to stable storage. 6898 */ 6899 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6900 6901 if (error) { 6902 VN_RELE(vp); 6903 *attrset = 0; 6904 return (puterrno4(error)); 6905 } 6906 6907 /* if parent dir is attrdir, set namedattr fh flag */ 6908 if (dvp->v_flag & V_XATTRDIR) 6909 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6910 6911 if (cs->vp) 6912 VN_RELE(cs->vp); 6913 6914 cs->vp = vp; 6915 6916 /* 6917 * if we did not create the file, we will need to check 6918 * the access bits on the file 6919 */ 6920 6921 if (!created) { 6922 if (setsize) 6923 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6924 status = check_open_access(args->share_access, cs, req); 6925 if (status != NFS4_OK) 6926 *attrset = 0; 6927 } 6928 return (status); 6929 } 6930 6931 /*ARGSUSED*/ 6932 static void 6933 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6934 rfs4_openowner_t *oo, delegreq_t deleg, 6935 uint32_t access, uint32_t deny, 6936 OPEN4res *resp, int deleg_cur) 6937 { 6938 /* XXX Currently not using req */ 6939 rfs4_state_t *sp; 6940 rfs4_file_t *fp; 6941 bool_t screate = TRUE; 6942 bool_t fcreate = TRUE; 6943 uint32_t open_a, share_a; 6944 uint32_t open_d, share_d; 6945 rfs4_deleg_state_t *dsp; 6946 sysid_t sysid; 6947 nfsstat4 status; 6948 caller_context_t ct; 6949 int fflags = 0; 6950 int recall = 0; 6951 int err; 6952 int first_open; 6953 6954 /* get the file struct and hold a lock on it during initial open */ 6955 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6956 if (fp == NULL) { 6957 resp->status = NFS4ERR_RESOURCE; 6958 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6959 return; 6960 } 6961 6962 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6963 if (sp == NULL) { 6964 resp->status = NFS4ERR_RESOURCE; 6965 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6966 /* No need to keep any reference */ 6967 rw_exit(&fp->rf_file_rwlock); 6968 rfs4_file_rele(fp); 6969 return; 6970 } 6971 6972 /* try to get the sysid before continuing */ 6973 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6974 resp->status = status; 6975 rfs4_file_rele(fp); 6976 /* Not a fully formed open; "close" it */ 6977 if (screate == TRUE) 6978 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6979 rfs4_state_rele(sp); 6980 return; 6981 } 6982 6983 /* Calculate the fflags for this OPEN. */ 6984 if (access & OPEN4_SHARE_ACCESS_READ) 6985 fflags |= FREAD; 6986 if (access & OPEN4_SHARE_ACCESS_WRITE) 6987 fflags |= FWRITE; 6988 6989 rfs4_dbe_lock(sp->rs_dbe); 6990 6991 /* 6992 * Calculate the new deny and access mode that this open is adding to 6993 * the file for this open owner; 6994 */ 6995 open_d = (deny & ~sp->rs_open_deny); 6996 open_a = (access & ~sp->rs_open_access); 6997 6998 /* 6999 * Calculate the new share access and share deny modes that this open 7000 * is adding to the file for this open owner; 7001 */ 7002 share_a = (access & ~sp->rs_share_access); 7003 share_d = (deny & ~sp->rs_share_deny); 7004 7005 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 7006 7007 /* 7008 * Check to see the client has already sent an open for this 7009 * open owner on this file with the same share/deny modes. 7010 * If so, we don't need to check for a conflict and we don't 7011 * need to add another shrlock. If not, then we need to 7012 * check for conflicts in deny and access before checking for 7013 * conflicts in delegation. We don't want to recall a 7014 * delegation based on an open that will eventually fail based 7015 * on shares modes. 7016 */ 7017 7018 if (share_a || share_d) { 7019 if ((err = rfs4_share(sp, access, deny)) != 0) { 7020 rfs4_dbe_unlock(sp->rs_dbe); 7021 resp->status = err; 7022 7023 rfs4_file_rele(fp); 7024 /* Not a fully formed open; "close" it */ 7025 if (screate == TRUE) 7026 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7027 rfs4_state_rele(sp); 7028 return; 7029 } 7030 } 7031 7032 rfs4_dbe_lock(fp->rf_dbe); 7033 7034 /* 7035 * Check to see if this file is delegated and if so, if a 7036 * recall needs to be done. 7037 */ 7038 if (rfs4_check_recall(sp, access)) { 7039 rfs4_dbe_unlock(fp->rf_dbe); 7040 rfs4_dbe_unlock(sp->rs_dbe); 7041 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 7042 delay(NFS4_DELEGATION_CONFLICT_DELAY); 7043 rfs4_dbe_lock(sp->rs_dbe); 7044 7045 /* if state closed while lock was dropped */ 7046 if (sp->rs_closed) { 7047 if (share_a || share_d) 7048 (void) rfs4_unshare(sp); 7049 rfs4_dbe_unlock(sp->rs_dbe); 7050 rfs4_file_rele(fp); 7051 /* Not a fully formed open; "close" it */ 7052 if (screate == TRUE) 7053 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7054 rfs4_state_rele(sp); 7055 resp->status = NFS4ERR_OLD_STATEID; 7056 return; 7057 } 7058 7059 rfs4_dbe_lock(fp->rf_dbe); 7060 /* Let's see if the delegation was returned */ 7061 if (rfs4_check_recall(sp, access)) { 7062 rfs4_dbe_unlock(fp->rf_dbe); 7063 if (share_a || share_d) 7064 (void) rfs4_unshare(sp); 7065 rfs4_dbe_unlock(sp->rs_dbe); 7066 rfs4_file_rele(fp); 7067 rfs4_update_lease(sp->rs_owner->ro_client); 7068 7069 /* Not a fully formed open; "close" it */ 7070 if (screate == TRUE) 7071 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7072 rfs4_state_rele(sp); 7073 resp->status = NFS4ERR_DELAY; 7074 return; 7075 } 7076 } 7077 /* 7078 * the share check passed and any delegation conflict has been 7079 * taken care of, now call vop_open. 7080 * if this is the first open then call vop_open with fflags. 7081 * if not, call vn_open_upgrade with just the upgrade flags. 7082 * 7083 * if the file has been opened already, it will have the current 7084 * access mode in the state struct. if it has no share access, then 7085 * this is a new open. 7086 * 7087 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 7088 * call VOP_OPEN(), just do the open upgrade. 7089 */ 7090 if (first_open && !deleg_cur) { 7091 ct.cc_sysid = sysid; 7092 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 7093 ct.cc_caller_id = nfs4_srv_caller_id; 7094 ct.cc_flags = CC_DONTBLOCK; 7095 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 7096 if (err) { 7097 rfs4_dbe_unlock(fp->rf_dbe); 7098 if (share_a || share_d) 7099 (void) rfs4_unshare(sp); 7100 rfs4_dbe_unlock(sp->rs_dbe); 7101 rfs4_file_rele(fp); 7102 7103 /* Not a fully formed open; "close" it */ 7104 if (screate == TRUE) 7105 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7106 rfs4_state_rele(sp); 7107 /* check if a monitor detected a delegation conflict */ 7108 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 7109 resp->status = NFS4ERR_DELAY; 7110 else 7111 resp->status = NFS4ERR_SERVERFAULT; 7112 return; 7113 } 7114 } else { /* open upgrade */ 7115 /* 7116 * calculate the fflags for the new mode that is being added 7117 * by this upgrade. 7118 */ 7119 fflags = 0; 7120 if (open_a & OPEN4_SHARE_ACCESS_READ) 7121 fflags |= FREAD; 7122 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 7123 fflags |= FWRITE; 7124 vn_open_upgrade(cs->vp, fflags); 7125 } 7126 sp->rs_open_access |= access; 7127 sp->rs_open_deny |= deny; 7128 7129 if (open_d & OPEN4_SHARE_DENY_READ) 7130 fp->rf_deny_read++; 7131 if (open_d & OPEN4_SHARE_DENY_WRITE) 7132 fp->rf_deny_write++; 7133 fp->rf_share_deny |= deny; 7134 7135 if (open_a & OPEN4_SHARE_ACCESS_READ) 7136 fp->rf_access_read++; 7137 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 7138 fp->rf_access_write++; 7139 fp->rf_share_access |= access; 7140 7141 /* 7142 * Check for delegation here. if the deleg argument is not 7143 * DELEG_ANY, then this is a reclaim from a client and 7144 * we must honor the delegation requested. If necessary we can 7145 * set the recall flag. 7146 */ 7147 7148 dsp = rfs4_grant_delegation(deleg, sp, &recall); 7149 7150 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 7151 7152 next_stateid(&sp->rs_stateid); 7153 7154 resp->stateid = sp->rs_stateid.stateid; 7155 7156 rfs4_dbe_unlock(fp->rf_dbe); 7157 rfs4_dbe_unlock(sp->rs_dbe); 7158 7159 if (dsp) { 7160 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 7161 rfs4_deleg_state_rele(dsp); 7162 } 7163 7164 rfs4_file_rele(fp); 7165 rfs4_state_rele(sp); 7166 7167 resp->status = NFS4_OK; 7168 } 7169 7170 /*ARGSUSED*/ 7171 static void 7172 rfs4_do_openfh(struct compound_state *cs, struct svc_req *req, OPEN4args *args, 7173 rfs4_openowner_t *oo, OPEN4res *resp) 7174 { 7175 /* cs->vp and cs->fh have been updated by putfh. */ 7176 rfs4_do_open(cs, req, oo, DELEG_ANY, 7177 (args->share_access & 0xff), args->share_deny, resp, 0); 7178 } 7179 7180 /*ARGSUSED*/ 7181 static void 7182 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 7183 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7184 { 7185 change_info4 *cinfo = &resp->cinfo; 7186 bitmap4 *attrset = &resp->attrset; 7187 7188 if (args->opentype == OPEN4_NOCREATE) 7189 resp->status = rfs4_lookupfile(&args->claim.open_claim4_u.file, 7190 req, cs, args->share_access, cinfo); 7191 else { 7192 /* inhibit delegation grants during exclusive create */ 7193 7194 if (args->mode == EXCLUSIVE4) 7195 rfs4_disable_delegation(); 7196 7197 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 7198 oo->ro_client->rc_clientid); 7199 } 7200 7201 if (resp->status == NFS4_OK) { 7202 7203 /* cs->vp cs->fh now reference the desired file */ 7204 7205 rfs4_do_open(cs, req, oo, 7206 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 7207 args->share_access, args->share_deny, resp, 0); 7208 7209 /* 7210 * If rfs4_createfile set attrset, we must 7211 * clear this attrset before the response is copied. 7212 */ 7213 if (resp->status != NFS4_OK && resp->attrset) { 7214 resp->attrset = 0; 7215 } 7216 } 7217 else 7218 *cs->statusp = resp->status; 7219 7220 if (args->mode == EXCLUSIVE4) 7221 rfs4_enable_delegation(); 7222 } 7223 7224 /*ARGSUSED*/ 7225 static void 7226 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 7227 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7228 { 7229 change_info4 *cinfo = &resp->cinfo; 7230 vattr_t va; 7231 vtype_t v_type = cs->vp->v_type; 7232 int error = 0; 7233 7234 /* Verify that we have a regular file */ 7235 if (v_type != VREG) { 7236 if (v_type == VDIR) 7237 resp->status = NFS4ERR_ISDIR; 7238 else if (v_type == VLNK) 7239 resp->status = NFS4ERR_SYMLINK; 7240 else 7241 resp->status = NFS4ERR_INVAL; 7242 return; 7243 } 7244 7245 va.va_mask = AT_MODE|AT_UID; 7246 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7247 if (error) { 7248 resp->status = puterrno4(error); 7249 return; 7250 } 7251 7252 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7253 7254 /* 7255 * Check if we have access to the file, Note the the file 7256 * could have originally been open UNCHECKED or GUARDED 7257 * with mode bits that will now fail, but there is nothing 7258 * we can really do about that except in the case that the 7259 * owner of the file is the one requesting the open. 7260 */ 7261 if (crgetuid(cs->cr) != va.va_uid) { 7262 resp->status = check_open_access(args->share_access, cs, req); 7263 if (resp->status != NFS4_OK) { 7264 return; 7265 } 7266 } 7267 7268 /* 7269 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7270 */ 7271 cinfo->before = 0; 7272 cinfo->after = 0; 7273 cinfo->atomic = FALSE; 7274 7275 rfs4_do_open(cs, req, oo, 7276 NFS4_DELEG4TYPE2REQTYPE(args->claim.open_claim4_u.delegate_type), 7277 args->share_access, args->share_deny, resp, 0); 7278 } 7279 7280 static void 7281 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7282 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7283 { 7284 int error; 7285 nfsstat4 status; 7286 stateid4 stateid = 7287 args->claim.open_claim4_u.delegate_cur_info.delegate_stateid; 7288 rfs4_deleg_state_t *dsp; 7289 7290 /* 7291 * Find the state info from the stateid and confirm that the 7292 * file is delegated. If the state openowner is the same as 7293 * the supplied openowner we're done. If not, get the file 7294 * info from the found state info. Use that file info to 7295 * create the state for this lock owner. Note solaris doen't 7296 * really need the pathname to find the file. We may want to 7297 * lookup the pathname and make sure that the vp exist and 7298 * matches the vp in the file structure. However it is 7299 * possible that the pathname nolonger exists (local process 7300 * unlinks the file), so this may not be that useful. 7301 */ 7302 7303 status = rfs4_get_deleg_state(&stateid, &dsp); 7304 if (status != NFS4_OK) { 7305 resp->status = status; 7306 return; 7307 } 7308 7309 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7310 7311 /* 7312 * New lock owner, create state. Since this was probably called 7313 * in response to a CB_RECALL we set deleg to DELEG_NONE 7314 */ 7315 7316 ASSERT(cs->vp != NULL); 7317 VN_RELE(cs->vp); 7318 VN_HOLD(dsp->rds_finfo->rf_vp); 7319 cs->vp = dsp->rds_finfo->rf_vp; 7320 7321 error = makefh4(&cs->fh, cs->vp, cs->exi); 7322 if (error != 0) { 7323 rfs4_deleg_state_rele(dsp); 7324 *cs->statusp = resp->status = puterrno4(error); 7325 return; 7326 } 7327 7328 /* Mark progress for delegation returns */ 7329 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7330 rfs4_deleg_state_rele(dsp); 7331 rfs4_do_open(cs, req, oo, DELEG_NONE, 7332 args->share_access, args->share_deny, resp, 1); 7333 } 7334 7335 /*ARGSUSED*/ 7336 static void 7337 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7338 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7339 { 7340 /* 7341 * Lookup the pathname, it must already exist since this file 7342 * was delegated. 7343 * 7344 * Find the file and state info for this vp and open owner pair. 7345 * check that they are in fact delegated. 7346 * check that the state access and deny modes are the same. 7347 * 7348 * Return the delgation possibly seting the recall flag. 7349 */ 7350 rfs4_file_t *fp; 7351 rfs4_state_t *sp; 7352 bool_t create = FALSE; 7353 bool_t dcreate = FALSE; 7354 rfs4_deleg_state_t *dsp; 7355 nfsace4 *ace; 7356 7357 /* Note we ignore oflags */ 7358 resp->status = rfs4_lookupfile( 7359 &args->claim.open_claim4_u.file_delegate_prev, 7360 req, cs, args->share_access, &resp->cinfo); 7361 7362 if (resp->status != NFS4_OK) { 7363 return; 7364 } 7365 7366 /* get the file struct and hold a lock on it during initial open */ 7367 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7368 if (fp == NULL) { 7369 resp->status = NFS4ERR_RESOURCE; 7370 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7371 return; 7372 } 7373 7374 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7375 if (sp == NULL) { 7376 resp->status = NFS4ERR_SERVERFAULT; 7377 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7378 rw_exit(&fp->rf_file_rwlock); 7379 rfs4_file_rele(fp); 7380 return; 7381 } 7382 7383 rfs4_dbe_lock(sp->rs_dbe); 7384 rfs4_dbe_lock(fp->rf_dbe); 7385 if (args->share_access != sp->rs_share_access || 7386 args->share_deny != sp->rs_share_deny || 7387 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7388 NFS4_DEBUG(rfs4_debug, 7389 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7390 rfs4_dbe_unlock(fp->rf_dbe); 7391 rfs4_dbe_unlock(sp->rs_dbe); 7392 rfs4_file_rele(fp); 7393 rfs4_state_rele(sp); 7394 resp->status = NFS4ERR_SERVERFAULT; 7395 return; 7396 } 7397 rfs4_dbe_unlock(fp->rf_dbe); 7398 rfs4_dbe_unlock(sp->rs_dbe); 7399 7400 dsp = rfs4_finddeleg(sp, &dcreate); 7401 if (dsp == NULL) { 7402 rfs4_state_rele(sp); 7403 rfs4_file_rele(fp); 7404 resp->status = NFS4ERR_SERVERFAULT; 7405 return; 7406 } 7407 7408 next_stateid(&sp->rs_stateid); 7409 7410 resp->stateid = sp->rs_stateid.stateid; 7411 7412 resp->delegation.delegation_type = dsp->rds_dtype; 7413 7414 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7415 open_read_delegation4 *rv = 7416 &resp->delegation.open_delegation4_u.read; 7417 7418 rv->stateid = dsp->rds_delegid.stateid; 7419 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7420 ace = &rv->permissions; 7421 } else { 7422 open_write_delegation4 *rv = 7423 &resp->delegation.open_delegation4_u.write; 7424 7425 rv->stateid = dsp->rds_delegid.stateid; 7426 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7427 ace = &rv->permissions; 7428 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7429 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7430 } 7431 7432 /* XXX For now */ 7433 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7434 ace->flag = 0; 7435 ace->access_mask = 0; 7436 ace->who.utf8string_len = 0; 7437 ace->who.utf8string_val = 0; 7438 7439 rfs4_deleg_state_rele(dsp); 7440 rfs4_state_rele(sp); 7441 rfs4_file_rele(fp); 7442 } 7443 7444 typedef enum { 7445 NFS4_CHKSEQ_OKAY = 0, 7446 NFS4_CHKSEQ_REPLAY = 1, 7447 NFS4_CHKSEQ_BAD = 2 7448 } rfs4_chkseq_t; 7449 7450 /* 7451 * Generic function for sequence number checks. 7452 */ 7453 static rfs4_chkseq_t 7454 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7455 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7456 { 7457 /* Same sequence ids and matching operations? */ 7458 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7459 if (copyres == TRUE) { 7460 rfs4_free_reply(resop); 7461 rfs4_copy_reply(resop, lastop); 7462 } 7463 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7464 "Replayed SEQID %d\n", seqid)); 7465 return (NFS4_CHKSEQ_REPLAY); 7466 } 7467 7468 /* If the incoming sequence is not the next expected then it is bad */ 7469 if (rqst_seq != seqid + 1) { 7470 if (rqst_seq == seqid) { 7471 NFS4_DEBUG(rfs4_debug, 7472 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7473 "but last op was %d current op is %d\n", 7474 lastop->resop, resop->resop)); 7475 return (NFS4_CHKSEQ_BAD); 7476 } 7477 NFS4_DEBUG(rfs4_debug, 7478 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7479 rqst_seq, seqid)); 7480 return (NFS4_CHKSEQ_BAD); 7481 } 7482 7483 /* Everything okay -- next expected */ 7484 return (NFS4_CHKSEQ_OKAY); 7485 } 7486 7487 7488 static rfs4_chkseq_t 7489 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop, 7490 const compound_state_t *cs) 7491 { 7492 rfs4_chkseq_t rc; 7493 7494 if (rfs4_has_session(cs)) 7495 return (NFS4_CHKSEQ_OKAY); 7496 7497 rfs4_dbe_lock(op->ro_dbe); 7498 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7499 TRUE); 7500 rfs4_dbe_unlock(op->ro_dbe); 7501 7502 if (rc == NFS4_CHKSEQ_OKAY) 7503 rfs4_update_lease(op->ro_client); 7504 7505 return (rc); 7506 } 7507 7508 static rfs4_chkseq_t 7509 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7510 { 7511 rfs4_chkseq_t rc; 7512 7513 rfs4_dbe_lock(op->ro_dbe); 7514 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7515 olo_seqid, resop, FALSE); 7516 rfs4_dbe_unlock(op->ro_dbe); 7517 7518 return (rc); 7519 } 7520 7521 static rfs4_chkseq_t 7522 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7523 { 7524 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7525 7526 rfs4_dbe_lock(lsp->rls_dbe); 7527 if (!lsp->rls_skip_seqid_check) 7528 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7529 resop, TRUE); 7530 rfs4_dbe_unlock(lsp->rls_dbe); 7531 7532 return (rc); 7533 } 7534 7535 static void 7536 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7537 struct svc_req *req, struct compound_state *cs) 7538 { 7539 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7540 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7541 open_owner4 *owner = &args->owner; 7542 open_claim_type4 claim = args->claim.claim; 7543 rfs4_client_t *cp; 7544 rfs4_openowner_t *oo; 7545 bool_t create; 7546 bool_t replay = FALSE; 7547 int can_reclaim; 7548 7549 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7550 OPEN4args *, args); 7551 7552 if (cs->vp == NULL) { 7553 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7554 goto end; 7555 } 7556 7557 /* rfc5661 section 18.16.3 */ 7558 if (rfs4_has_session(cs)) 7559 owner->clientid = cs->client->rc_clientid; 7560 7561 /* 7562 * Need to check clientid and lease expiration first based on 7563 * error ordering and incrementing sequence id. 7564 */ 7565 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7566 if (cp == NULL) { 7567 *cs->statusp = resp->status = 7568 rfs4_check_clientid(&owner->clientid, 0); 7569 goto end; 7570 } 7571 7572 if (rfs4_lease_expired(cp)) { 7573 rfs4_client_close(cp); 7574 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7575 goto end; 7576 } 7577 can_reclaim = cp->rc_can_reclaim; 7578 7579 /* 7580 * Find the open_owner for use from this point forward. Take 7581 * care in updating the sequence id based on the type of error 7582 * being returned. 7583 */ 7584 retry: 7585 create = TRUE; 7586 oo = rfs4_findopenowner(owner, &create, args->seqid); 7587 if (oo == NULL) { 7588 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 7589 rfs4_client_rele(cp); 7590 goto end; 7591 } 7592 7593 /* 7594 * OPEN_CONFIRM must not be implemented in v4.1 7595 */ 7596 if (rfs4_has_session(cs)) { 7597 oo->ro_need_confirm = FALSE; 7598 } 7599 7600 /* Hold off access to the sequence space while the open is done */ 7601 /* Workaround to avoid deadlock */ 7602 if (!rfs4_has_session(cs)) 7603 rfs4_sw_enter(&oo->ro_sw); 7604 7605 /* 7606 * If the open_owner existed before at the server, then check 7607 * the sequence id. 7608 */ 7609 if (!create && !oo->ro_postpone_confirm) { 7610 switch (rfs4_check_open_seqid(args->seqid, oo, resop, cs)) { 7611 case NFS4_CHKSEQ_BAD: 7612 ASSERT(!rfs4_has_session(cs)); 7613 if ((args->seqid > oo->ro_open_seqid) && 7614 oo->ro_need_confirm) { 7615 rfs4_free_opens(oo, TRUE, FALSE); 7616 rfs4_sw_exit(&oo->ro_sw); 7617 rfs4_openowner_rele(oo); 7618 goto retry; 7619 } 7620 resp->status = NFS4ERR_BAD_SEQID; 7621 goto out; 7622 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7623 replay = TRUE; 7624 goto out; 7625 default: 7626 break; 7627 } 7628 7629 /* 7630 * Sequence was ok and open owner exists 7631 * check to see if we have yet to see an 7632 * open_confirm. 7633 */ 7634 if (oo->ro_need_confirm) { 7635 rfs4_free_opens(oo, TRUE, FALSE); 7636 ASSERT(!rfs4_has_session(cs)); 7637 rfs4_sw_exit(&oo->ro_sw); 7638 rfs4_openowner_rele(oo); 7639 goto retry; 7640 } 7641 } 7642 /* Grace only applies to regular-type OPENs */ 7643 if (rfs4_clnt_in_grace(cp) && 7644 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR || 7645 claim == CLAIM_FH)) { 7646 *cs->statusp = resp->status = NFS4ERR_GRACE; 7647 goto out; 7648 } 7649 7650 /* 7651 * If previous state at the server existed then can_reclaim 7652 * will be set. If not reply NFS4ERR_NO_GRACE to the 7653 * client. 7654 */ 7655 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7656 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7657 goto out; 7658 } 7659 7660 7661 /* 7662 * Reject the open if the client has missed the grace period 7663 */ 7664 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7665 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7666 goto out; 7667 } 7668 7669 /* Couple of up-front bookkeeping items */ 7670 if (oo->ro_need_confirm) { 7671 /* 7672 * If this is a reclaim OPEN then we should not ask 7673 * for a confirmation of the open_owner per the 7674 * protocol specification. 7675 */ 7676 if (claim == CLAIM_PREVIOUS) 7677 oo->ro_need_confirm = FALSE; 7678 else 7679 resp->rflags |= OPEN4_RESULT_CONFIRM; 7680 } 7681 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7682 7683 /* 7684 * If there is an unshared filesystem mounted on this vnode, 7685 * do not allow to open/create in this directory. 7686 */ 7687 if (vn_ismntpt(cs->vp)) { 7688 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7689 goto out; 7690 } 7691 7692 /* 7693 * access must READ, WRITE, or BOTH. No access is invalid. 7694 * deny can be READ, WRITE, BOTH, or NONE. 7695 * bits not defined for access/deny are invalid. 7696 */ 7697 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7698 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7699 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7700 *cs->statusp = resp->status = NFS4ERR_INVAL; 7701 goto out; 7702 } 7703 7704 7705 /* 7706 * make sure attrset is zero before response is built. 7707 */ 7708 resp->attrset = 0; 7709 7710 switch (claim) { 7711 case CLAIM_NULL: 7712 rfs4_do_opennull(cs, req, args, oo, resp); 7713 break; 7714 case CLAIM_PREVIOUS: 7715 rfs4_do_openprev(cs, req, args, oo, resp); 7716 break; 7717 case CLAIM_DELEGATE_CUR: 7718 rfs4_do_opendelcur(cs, req, args, oo, resp); 7719 break; 7720 case CLAIM_DELEGATE_PREV: 7721 rfs4_do_opendelprev(cs, req, args, oo, resp); 7722 break; 7723 case CLAIM_FH: 7724 rfs4_do_openfh(cs, req, args, oo, resp); 7725 break; 7726 default: 7727 resp->status = NFS4ERR_INVAL; 7728 break; 7729 } 7730 7731 out: 7732 rfs4_client_rele(cp); 7733 7734 /* Catch sequence id handling here to make it a little easier */ 7735 switch (resp->status) { 7736 case NFS4ERR_BADXDR: 7737 case NFS4ERR_BAD_SEQID: 7738 case NFS4ERR_BAD_STATEID: 7739 case NFS4ERR_NOFILEHANDLE: 7740 case NFS4ERR_RESOURCE: 7741 case NFS4ERR_STALE_CLIENTID: 7742 case NFS4ERR_STALE_STATEID: 7743 /* 7744 * The protocol states that if any of these errors are 7745 * being returned, the sequence id should not be 7746 * incremented. Any other return requires an 7747 * increment. 7748 */ 7749 break; 7750 default: 7751 /* Always update the lease in this case */ 7752 rfs4_update_lease(oo->ro_client); 7753 7754 /* Regular response - copy the result */ 7755 if (!replay) 7756 rfs4_update_open_resp(oo, resop, &cs->fh); 7757 7758 /* 7759 * REPLAY case: Only if the previous response was OK 7760 * do we copy the filehandle. If not OK, no 7761 * filehandle to copy. 7762 */ 7763 if (replay == TRUE && 7764 resp->status == NFS4_OK && 7765 oo->ro_reply_fh.nfs_fh4_val) { 7766 /* 7767 * If this is a replay, we must restore the 7768 * current filehandle/vp to that of what was 7769 * returned originally. Try our best to do 7770 * it. 7771 */ 7772 nfs_fh4_fmt_t *fh_fmtp = 7773 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7774 7775 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7776 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7777 7778 if (cs->exi == NULL) { 7779 resp->status = NFS4ERR_STALE; 7780 goto finish; 7781 } 7782 7783 VN_RELE(cs->vp); 7784 7785 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7786 &resp->status); 7787 7788 if (cs->vp == NULL) 7789 goto finish; 7790 7791 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7792 } 7793 7794 /* 7795 * If this was a replay, no need to update the 7796 * sequence id. If the open_owner was not created on 7797 * this pass, then update. The first use of an 7798 * open_owner will not bump the sequence id. 7799 */ 7800 if (replay == FALSE && !create) 7801 rfs4_update_open_sequence(oo); 7802 /* 7803 * If the client is receiving an error and the 7804 * open_owner needs to be confirmed, there is no way 7805 * to notify the client of this fact ignoring the fact 7806 * that the server has no method of returning a 7807 * stateid to confirm. Therefore, the server needs to 7808 * mark this open_owner in a way as to avoid the 7809 * sequence id checking the next time the client uses 7810 * this open_owner. 7811 */ 7812 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7813 oo->ro_postpone_confirm = TRUE; 7814 /* 7815 * If OK response then clear the postpone flag and 7816 * reset the sequence id to keep in sync with the 7817 * client. 7818 */ 7819 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7820 oo->ro_postpone_confirm = FALSE; 7821 oo->ro_open_seqid = args->seqid; 7822 } 7823 break; 7824 } 7825 7826 finish: 7827 *cs->statusp = resp->status; 7828 7829 if (!rfs4_has_session(cs)) 7830 rfs4_sw_exit(&oo->ro_sw); 7831 rfs4_openowner_rele(oo); 7832 7833 end: 7834 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7835 OPEN4res *, resp); 7836 } 7837 7838 /*ARGSUSED*/ 7839 void 7840 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7841 struct svc_req *req, struct compound_state *cs) 7842 { 7843 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7844 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7845 rfs4_state_t *sp; 7846 nfsstat4 status; 7847 7848 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7849 OPEN_CONFIRM4args *, args); 7850 7851 ASSERT(!rfs4_has_session(cs)); 7852 7853 if (cs->vp == NULL) { 7854 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7855 goto out; 7856 } 7857 7858 if (cs->vp->v_type != VREG) { 7859 *cs->statusp = resp->status = 7860 cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL; 7861 return; 7862 } 7863 7864 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7865 if (status != NFS4_OK) { 7866 *cs->statusp = resp->status = status; 7867 goto out; 7868 } 7869 7870 /* Ensure specified filehandle matches */ 7871 if (cs->vp != sp->rs_finfo->rf_vp) { 7872 rfs4_state_rele(sp); 7873 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7874 goto out; 7875 } 7876 7877 /* hold off other access to open_owner while we tinker */ 7878 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7879 7880 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid, cs)) { 7881 case NFS4_CHECK_STATEID_OKAY: 7882 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7883 resop, cs) != 0) { 7884 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7885 break; 7886 } 7887 /* 7888 * If it is the appropriate stateid and determined to 7889 * be "OKAY" then this means that the stateid does not 7890 * need to be confirmed and the client is in error for 7891 * sending an OPEN_CONFIRM. 7892 */ 7893 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7894 break; 7895 case NFS4_CHECK_STATEID_OLD: 7896 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7897 break; 7898 case NFS4_CHECK_STATEID_BAD: 7899 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7900 break; 7901 case NFS4_CHECK_STATEID_EXPIRED: 7902 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7903 break; 7904 case NFS4_CHECK_STATEID_CLOSED: 7905 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7906 break; 7907 case NFS4_CHECK_STATEID_REPLAY: 7908 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7909 resop, cs)) { 7910 case NFS4_CHKSEQ_OKAY: 7911 /* 7912 * This is replayed stateid; if seqid matches 7913 * next expected, then client is using wrong seqid. 7914 */ 7915 /* fall through */ 7916 case NFS4_CHKSEQ_BAD: 7917 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7918 break; 7919 case NFS4_CHKSEQ_REPLAY: 7920 /* 7921 * Note this case is the duplicate case so 7922 * resp->status is already set. 7923 */ 7924 *cs->statusp = resp->status; 7925 rfs4_update_lease(sp->rs_owner->ro_client); 7926 break; 7927 } 7928 break; 7929 case NFS4_CHECK_STATEID_UNCONFIRMED: 7930 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7931 resop, cs) != NFS4_CHKSEQ_OKAY) { 7932 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7933 break; 7934 } 7935 *cs->statusp = resp->status = NFS4_OK; 7936 7937 next_stateid(&sp->rs_stateid); 7938 resp->open_stateid = sp->rs_stateid.stateid; 7939 sp->rs_owner->ro_need_confirm = FALSE; 7940 rfs4_update_lease(sp->rs_owner->ro_client); 7941 rfs4_update_open_sequence(sp->rs_owner); 7942 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7943 break; 7944 default: 7945 ASSERT(FALSE); 7946 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7947 break; 7948 } 7949 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7950 rfs4_state_rele(sp); 7951 7952 out: 7953 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7954 OPEN_CONFIRM4res *, resp); 7955 } 7956 7957 /*ARGSUSED*/ 7958 void 7959 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7960 struct svc_req *req, struct compound_state *cs) 7961 { 7962 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7963 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7964 uint32_t access = args->share_access; 7965 uint32_t deny = args->share_deny; 7966 nfsstat4 status; 7967 rfs4_state_t *sp; 7968 rfs4_file_t *fp; 7969 int fflags = 0; 7970 7971 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7972 OPEN_DOWNGRADE4args *, args); 7973 7974 if (cs->vp == NULL) { 7975 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7976 goto out; 7977 } 7978 7979 if (cs->vp->v_type != VREG) { 7980 *cs->statusp = resp->status = NFS4ERR_INVAL; 7981 return; 7982 } 7983 7984 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7985 if (status != NFS4_OK) { 7986 *cs->statusp = resp->status = status; 7987 goto out; 7988 } 7989 7990 /* Ensure specified filehandle matches */ 7991 if (cs->vp != sp->rs_finfo->rf_vp) { 7992 rfs4_state_rele(sp); 7993 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7994 goto out; 7995 } 7996 7997 /* hold off other access to open_owner while we tinker */ 7998 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7999 8000 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid, cs)) { 8001 case NFS4_CHECK_STATEID_OKAY: 8002 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8003 resop, cs) != NFS4_CHKSEQ_OKAY) { 8004 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8005 goto end; 8006 } 8007 break; 8008 case NFS4_CHECK_STATEID_OLD: 8009 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8010 goto end; 8011 case NFS4_CHECK_STATEID_BAD: 8012 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8013 goto end; 8014 case NFS4_CHECK_STATEID_EXPIRED: 8015 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8016 goto end; 8017 case NFS4_CHECK_STATEID_CLOSED: 8018 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8019 goto end; 8020 case NFS4_CHECK_STATEID_UNCONFIRMED: 8021 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8022 goto end; 8023 case NFS4_CHECK_STATEID_REPLAY: 8024 ASSERT(!rfs4_has_session(cs)); 8025 8026 /* Check the sequence id for the open owner */ 8027 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8028 resop, cs)) { 8029 case NFS4_CHKSEQ_OKAY: 8030 /* 8031 * This is replayed stateid; if seqid matches 8032 * next expected, then client is using wrong seqid. 8033 */ 8034 /* fall through */ 8035 case NFS4_CHKSEQ_BAD: 8036 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8037 goto end; 8038 case NFS4_CHKSEQ_REPLAY: 8039 /* 8040 * Note this case is the duplicate case so 8041 * resp->status is already set. 8042 */ 8043 *cs->statusp = resp->status; 8044 rfs4_update_lease(sp->rs_owner->ro_client); 8045 goto end; 8046 } 8047 break; 8048 default: 8049 ASSERT(FALSE); 8050 break; 8051 } 8052 8053 rfs4_dbe_lock(sp->rs_dbe); 8054 /* 8055 * Check that the new access modes and deny modes are valid. 8056 * Check that no invalid bits are set. 8057 */ 8058 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 8059 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 8060 *cs->statusp = resp->status = NFS4ERR_INVAL; 8061 rfs4_update_open_sequence(sp->rs_owner); 8062 rfs4_dbe_unlock(sp->rs_dbe); 8063 goto end; 8064 } 8065 8066 /* 8067 * The new modes must be a subset of the current modes and 8068 * the access must specify at least one mode. To test that 8069 * the new mode is a subset of the current modes we bitwise 8070 * AND them together and check that the result equals the new 8071 * mode. For example: 8072 * New mode, access == R and current mode, sp->rs_open_access == RW 8073 * access & sp->rs_open_access == R == access, so the new access mode 8074 * is valid. Consider access == RW, sp->rs_open_access = R 8075 * access & sp->rs_open_access == R != access, so the new access mode 8076 * is invalid. 8077 */ 8078 if ((access & sp->rs_open_access) != access || 8079 (deny & sp->rs_open_deny) != deny || 8080 (access & 8081 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 8082 *cs->statusp = resp->status = NFS4ERR_INVAL; 8083 rfs4_update_open_sequence(sp->rs_owner); 8084 rfs4_dbe_unlock(sp->rs_dbe); 8085 goto end; 8086 } 8087 8088 /* 8089 * Release any share locks associated with this stateID. 8090 * Strictly speaking, this violates the spec because the 8091 * spec effectively requires that open downgrade be atomic. 8092 * At present, fs_shrlock does not have this capability. 8093 */ 8094 (void) rfs4_unshare(sp); 8095 8096 status = rfs4_share(sp, access, deny); 8097 if (status != NFS4_OK) { 8098 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8099 rfs4_update_open_sequence(sp->rs_owner); 8100 rfs4_dbe_unlock(sp->rs_dbe); 8101 goto end; 8102 } 8103 8104 fp = sp->rs_finfo; 8105 rfs4_dbe_lock(fp->rf_dbe); 8106 8107 /* 8108 * If the current mode has deny read and the new mode 8109 * does not, decrement the number of deny read mode bits 8110 * and if it goes to zero turn off the deny read bit 8111 * on the file. 8112 */ 8113 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 8114 (deny & OPEN4_SHARE_DENY_READ) == 0) { 8115 fp->rf_deny_read--; 8116 if (fp->rf_deny_read == 0) 8117 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8118 } 8119 8120 /* 8121 * If the current mode has deny write and the new mode 8122 * does not, decrement the number of deny write mode bits 8123 * and if it goes to zero turn off the deny write bit 8124 * on the file. 8125 */ 8126 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 8127 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 8128 fp->rf_deny_write--; 8129 if (fp->rf_deny_write == 0) 8130 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8131 } 8132 8133 /* 8134 * If the current mode has access read and the new mode 8135 * does not, decrement the number of access read mode bits 8136 * and if it goes to zero turn off the access read bit 8137 * on the file. set fflags to FREAD for the call to 8138 * vn_open_downgrade(). 8139 */ 8140 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 8141 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 8142 fp->rf_access_read--; 8143 if (fp->rf_access_read == 0) 8144 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8145 fflags |= FREAD; 8146 } 8147 8148 /* 8149 * If the current mode has access write and the new mode 8150 * does not, decrement the number of access write mode bits 8151 * and if it goes to zero turn off the access write bit 8152 * on the file. set fflags to FWRITE for the call to 8153 * vn_open_downgrade(). 8154 */ 8155 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 8156 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8157 fp->rf_access_write--; 8158 if (fp->rf_access_write == 0) 8159 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 8160 fflags |= FWRITE; 8161 } 8162 8163 /* Check that the file is still accessible */ 8164 ASSERT(fp->rf_share_access); 8165 8166 rfs4_dbe_unlock(fp->rf_dbe); 8167 8168 /* now set the new open access and deny modes */ 8169 sp->rs_open_access = access; 8170 sp->rs_open_deny = deny; 8171 8172 /* 8173 * we successfully downgraded the share lock, now we need to downgrade 8174 * the open. it is possible that the downgrade was only for a deny 8175 * mode and we have nothing else to do. 8176 */ 8177 if ((fflags & (FREAD|FWRITE)) != 0) 8178 vn_open_downgrade(cs->vp, fflags); 8179 8180 /* Update the stateid */ 8181 next_stateid(&sp->rs_stateid); 8182 resp->open_stateid = sp->rs_stateid.stateid; 8183 8184 rfs4_dbe_unlock(sp->rs_dbe); 8185 8186 *cs->statusp = resp->status = NFS4_OK; 8187 /* Update the lease */ 8188 rfs4_update_lease(sp->rs_owner->ro_client); 8189 /* And the sequence */ 8190 rfs4_update_open_sequence(sp->rs_owner); 8191 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8192 8193 end: 8194 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8195 rfs4_state_rele(sp); 8196 out: 8197 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 8198 OPEN_DOWNGRADE4res *, resp); 8199 } 8200 8201 static void * 8202 memstr(const void *s1, const char *s2, size_t n) 8203 { 8204 size_t l = strlen(s2); 8205 char *p = (char *)s1; 8206 8207 while (n >= l) { 8208 if (bcmp(p, s2, l) == 0) 8209 return (p); 8210 p++; 8211 n--; 8212 } 8213 8214 return (NULL); 8215 } 8216 8217 /* 8218 * The logic behind this function is detailed in the NFSv4 RFC in the 8219 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 8220 * that section for explicit guidance to server behavior for 8221 * SETCLIENTID. 8222 */ 8223 void 8224 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 8225 struct svc_req *req, struct compound_state *cs) 8226 { 8227 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 8228 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 8229 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 8230 rfs4_clntip_t *ci; 8231 bool_t create; 8232 char *addr, *netid; 8233 int len; 8234 8235 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 8236 SETCLIENTID4args *, args); 8237 retry: 8238 newcp = cp_confirmed = cp_unconfirmed = NULL; 8239 8240 /* 8241 * Save the caller's IP address 8242 */ 8243 args->client.cl_addr = 8244 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 8245 8246 /* 8247 * Record if it is a Solaris client that cannot handle referrals. 8248 */ 8249 if (memstr(args->client.id_val, "Solaris", args->client.id_len) && 8250 !memstr(args->client.id_val, "+referrals", args->client.id_len)) { 8251 /* Add a "yes, it's downrev" record */ 8252 create = TRUE; 8253 ci = rfs4_find_clntip(args->client.cl_addr, &create); 8254 ASSERT(ci != NULL); 8255 rfs4_dbe_rele(ci->ri_dbe); 8256 } else { 8257 /* Remove any previous record */ 8258 rfs4_invalidate_clntip(args->client.cl_addr); 8259 } 8260 8261 /* 8262 * In search of an EXISTING client matching the incoming 8263 * request to establish a new client identifier at the server 8264 */ 8265 create = TRUE; 8266 cp = rfs4_findclient(&args->client, &create, NULL); 8267 8268 /* Should never happen */ 8269 ASSERT(cp != NULL); 8270 8271 if (cp == NULL) { 8272 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8273 goto out; 8274 } 8275 8276 /* 8277 * Easiest case. Client identifier is newly created and is 8278 * unconfirmed. Also note that for this case, no other 8279 * entries exist for the client identifier. Nothing else to 8280 * check. Just setup the response and respond. 8281 */ 8282 if (create) { 8283 *cs->statusp = res->status = NFS4_OK; 8284 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 8285 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8286 cp->rc_confirm_verf; 8287 /* Setup callback information; CB_NULL confirmation later */ 8288 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 8289 8290 rfs4_client_rele(cp); 8291 goto out; 8292 } 8293 8294 /* 8295 * An existing, confirmed client may exist but it may not have 8296 * been active for at least one lease period. If so, then 8297 * "close" the client and create a new client identifier 8298 */ 8299 if (rfs4_lease_expired(cp)) { 8300 rfs4_client_close(cp); 8301 goto retry; 8302 } 8303 8304 if (cp->rc_need_confirm == TRUE) 8305 cp_unconfirmed = cp; 8306 else 8307 cp_confirmed = cp; 8308 8309 cp = NULL; 8310 8311 /* 8312 * We have a confirmed client, now check for an 8313 * unconfimred entry 8314 */ 8315 if (cp_confirmed) { 8316 /* If creds don't match then client identifier is inuse */ 8317 if (!creds_ok(&cp_confirmed->rc_cr_set, req, cs)) { 8318 rfs4_cbinfo_t *cbp; 8319 /* 8320 * Some one else has established this client 8321 * id. Try and say * who they are. We will use 8322 * the call back address supplied by * the 8323 * first client. 8324 */ 8325 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8326 8327 addr = netid = NULL; 8328 8329 cbp = &cp_confirmed->rc_cbinfo; 8330 if (cbp->cb_callback.cb_location.r_addr && 8331 cbp->cb_callback.cb_location.r_netid) { 8332 cb_client4 *cbcp = &cbp->cb_callback; 8333 8334 len = strlen(cbcp->cb_location.r_addr)+1; 8335 addr = kmem_alloc(len, KM_SLEEP); 8336 bcopy(cbcp->cb_location.r_addr, addr, len); 8337 len = strlen(cbcp->cb_location.r_netid)+1; 8338 netid = kmem_alloc(len, KM_SLEEP); 8339 bcopy(cbcp->cb_location.r_netid, netid, len); 8340 } 8341 8342 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8343 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8344 8345 rfs4_client_rele(cp_confirmed); 8346 } 8347 8348 /* 8349 * Confirmed, creds match, and verifier matches; must 8350 * be an update of the callback info 8351 */ 8352 if (cp_confirmed->rc_nfs_client.verifier == 8353 args->client.verifier) { 8354 /* Setup callback information */ 8355 rfs4_client_setcb(cp_confirmed, &args->callback, 8356 args->callback_ident); 8357 8358 /* everything okay -- move ahead */ 8359 *cs->statusp = res->status = NFS4_OK; 8360 res->SETCLIENTID4res_u.resok4.clientid = 8361 cp_confirmed->rc_clientid; 8362 8363 /* update the confirm_verifier and return it */ 8364 rfs4_client_scv_next(cp_confirmed); 8365 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8366 cp_confirmed->rc_confirm_verf; 8367 8368 rfs4_client_rele(cp_confirmed); 8369 goto out; 8370 } 8371 8372 /* 8373 * Creds match but the verifier doesn't. Must search 8374 * for an unconfirmed client that would be replaced by 8375 * this request. 8376 */ 8377 create = FALSE; 8378 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8379 cp_confirmed); 8380 } 8381 8382 /* 8383 * At this point, we have taken care of the brand new client 8384 * struct, INUSE case, update of an existing, and confirmed 8385 * client struct. 8386 */ 8387 8388 /* 8389 * check to see if things have changed while we originally 8390 * picked up the client struct. If they have, then return and 8391 * retry the processing of this SETCLIENTID request. 8392 */ 8393 if (cp_unconfirmed) { 8394 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8395 if (!cp_unconfirmed->rc_need_confirm) { 8396 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8397 rfs4_client_rele(cp_unconfirmed); 8398 if (cp_confirmed) 8399 rfs4_client_rele(cp_confirmed); 8400 goto retry; 8401 } 8402 /* do away with the old unconfirmed one */ 8403 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8404 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8405 rfs4_client_rele(cp_unconfirmed); 8406 cp_unconfirmed = NULL; 8407 } 8408 8409 /* 8410 * This search will temporarily hide the confirmed client 8411 * struct while a new client struct is created as the 8412 * unconfirmed one. 8413 */ 8414 create = TRUE; 8415 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8416 8417 ASSERT(newcp != NULL); 8418 8419 if (newcp == NULL) { 8420 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8421 rfs4_client_rele(cp_confirmed); 8422 goto out; 8423 } 8424 8425 /* 8426 * If one was not created, then a similar request must be in 8427 * process so release and start over with this one 8428 */ 8429 if (create != TRUE) { 8430 rfs4_client_rele(newcp); 8431 if (cp_confirmed) 8432 rfs4_client_rele(cp_confirmed); 8433 goto retry; 8434 } 8435 8436 *cs->statusp = res->status = NFS4_OK; 8437 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8438 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8439 newcp->rc_confirm_verf; 8440 /* Setup callback information; CB_NULL confirmation later */ 8441 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8442 8443 newcp->rc_cp_confirmed = cp_confirmed; 8444 8445 rfs4_client_rele(newcp); 8446 8447 out: 8448 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8449 SETCLIENTID4res *, res); 8450 } 8451 8452 /*ARGSUSED*/ 8453 void 8454 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8455 struct svc_req *req, struct compound_state *cs) 8456 { 8457 SETCLIENTID_CONFIRM4args *args = 8458 &argop->nfs_argop4_u.opsetclientid_confirm; 8459 SETCLIENTID_CONFIRM4res *res = 8460 &resop->nfs_resop4_u.opsetclientid_confirm; 8461 rfs4_client_t *cp, *cptoclose = NULL; 8462 nfs4_srv_t *nsrv4; 8463 8464 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8465 struct compound_state *, cs, 8466 SETCLIENTID_CONFIRM4args *, args); 8467 8468 nsrv4 = nfs4_get_srv(); 8469 *cs->statusp = res->status = NFS4_OK; 8470 8471 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8472 8473 if (cp == NULL) { 8474 *cs->statusp = res->status = 8475 rfs4_check_clientid(&args->clientid, 1); 8476 goto out; 8477 } 8478 8479 if (!creds_ok(&cp->rc_cr_set, req, cs)) { 8480 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8481 rfs4_client_rele(cp); 8482 goto out; 8483 } 8484 8485 /* If the verifier doesn't match, the record doesn't match */ 8486 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8487 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8488 rfs4_client_rele(cp); 8489 goto out; 8490 } 8491 8492 rfs4_dbe_lock(cp->rc_dbe); 8493 cp->rc_need_confirm = FALSE; 8494 if (cp->rc_cp_confirmed) { 8495 cptoclose = cp->rc_cp_confirmed; 8496 cptoclose->rc_ss_remove = 1; 8497 cp->rc_cp_confirmed = NULL; 8498 } 8499 8500 /* 8501 * Update the client's associated server instance, if it's changed 8502 * since the client was created. 8503 */ 8504 if (rfs4_servinst(cp) != nsrv4->nfs4_cur_servinst) 8505 rfs4_servinst_assign(nsrv4, cp, nsrv4->nfs4_cur_servinst); 8506 8507 /* 8508 * Record clientid in stable storage. 8509 * Must be done after server instance has been assigned. 8510 */ 8511 rfs4_ss_clid(nsrv4, cp); 8512 8513 rfs4_dbe_unlock(cp->rc_dbe); 8514 8515 if (cptoclose) 8516 /* don't need to rele, client_close does it */ 8517 rfs4_client_close(cptoclose); 8518 8519 /* If needed, initiate CB_NULL call for callback path */ 8520 rfs4_deleg_cb_check(cp); 8521 rfs4_update_lease(cp); 8522 8523 /* 8524 * Check to see if client can perform reclaims 8525 */ 8526 rfs4_ss_chkclid(nsrv4, cp); 8527 8528 rfs4_client_rele(cp); 8529 8530 out: 8531 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8532 struct compound_state *, cs, 8533 SETCLIENTID_CONFIRM4 *, res); 8534 } 8535 8536 8537 /*ARGSUSED*/ 8538 void 8539 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8540 struct svc_req *req, struct compound_state *cs) 8541 { 8542 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8543 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8544 rfs4_state_t *sp; 8545 nfsstat4 status; 8546 8547 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8548 CLOSE4args *, args); 8549 8550 if (cs->vp == NULL) { 8551 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8552 goto out; 8553 } 8554 8555 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8556 if (status != NFS4_OK) { 8557 *cs->statusp = resp->status = status; 8558 goto out; 8559 } 8560 8561 /* Ensure specified filehandle matches */ 8562 if (cs->vp != sp->rs_finfo->rf_vp) { 8563 rfs4_state_rele(sp); 8564 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8565 goto out; 8566 } 8567 8568 /* hold off other access to open_owner while we tinker */ 8569 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8570 8571 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid, cs)) { 8572 case NFS4_CHECK_STATEID_OKAY: 8573 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8574 resop, cs) != NFS4_CHKSEQ_OKAY) { 8575 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8576 goto end; 8577 } 8578 break; 8579 case NFS4_CHECK_STATEID_OLD: 8580 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8581 goto end; 8582 case NFS4_CHECK_STATEID_BAD: 8583 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8584 goto end; 8585 case NFS4_CHECK_STATEID_EXPIRED: 8586 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8587 goto end; 8588 case NFS4_CHECK_STATEID_CLOSED: 8589 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8590 goto end; 8591 case NFS4_CHECK_STATEID_UNCONFIRMED: 8592 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8593 goto end; 8594 case NFS4_CHECK_STATEID_REPLAY: 8595 ASSERT(!rfs4_has_session(cs)); 8596 8597 /* Check the sequence id for the open owner */ 8598 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8599 resop, cs)) { 8600 case NFS4_CHKSEQ_OKAY: 8601 /* 8602 * This is replayed stateid; if seqid matches 8603 * next expected, then client is using wrong seqid. 8604 */ 8605 /* FALL THROUGH */ 8606 case NFS4_CHKSEQ_BAD: 8607 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8608 goto end; 8609 case NFS4_CHKSEQ_REPLAY: 8610 /* 8611 * Note this case is the duplicate case so 8612 * resp->status is already set. 8613 */ 8614 *cs->statusp = resp->status; 8615 rfs4_update_lease(sp->rs_owner->ro_client); 8616 goto end; 8617 } 8618 break; 8619 default: 8620 ASSERT(FALSE); 8621 break; 8622 } 8623 8624 rfs4_dbe_lock(sp->rs_dbe); 8625 8626 /* Update the stateid. */ 8627 next_stateid(&sp->rs_stateid); 8628 resp->open_stateid = sp->rs_stateid.stateid; 8629 8630 rfs4_dbe_unlock(sp->rs_dbe); 8631 8632 rfs4_update_lease(sp->rs_owner->ro_client); 8633 rfs4_update_open_sequence(sp->rs_owner); 8634 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8635 8636 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8637 8638 *cs->statusp = resp->status = status; 8639 8640 end: 8641 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8642 rfs4_state_rele(sp); 8643 out: 8644 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8645 CLOSE4res *, resp); 8646 } 8647 8648 /* 8649 * Manage the counts on the file struct and close all file locks 8650 */ 8651 /*ARGSUSED*/ 8652 void 8653 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8654 bool_t close_of_client) 8655 { 8656 rfs4_file_t *fp = sp->rs_finfo; 8657 rfs4_lo_state_t *lsp; 8658 int fflags = 0; 8659 8660 /* 8661 * If this call is part of the larger closing down of client 8662 * state then it is just easier to release all locks 8663 * associated with this client instead of going through each 8664 * individual file and cleaning locks there. 8665 */ 8666 if (close_of_client) { 8667 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8668 !list_is_empty(&sp->rs_lostatelist) && 8669 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8670 /* Is the PxFS kernel module loaded? */ 8671 if (lm_remove_file_locks != NULL) { 8672 int new_sysid; 8673 8674 /* Encode the cluster nodeid in new sysid */ 8675 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8676 lm_set_nlmid_flk(&new_sysid); 8677 8678 /* 8679 * This PxFS routine removes file locks for a 8680 * client over all nodes of a cluster. 8681 */ 8682 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8683 "lm_remove_file_locks(sysid=0x%x)\n", 8684 new_sysid)); 8685 (*lm_remove_file_locks)(new_sysid); 8686 } else { 8687 struct flock64 flk; 8688 8689 /* Release all locks for this client */ 8690 flk.l_type = F_UNLKSYS; 8691 flk.l_whence = 0; 8692 flk.l_start = 0; 8693 flk.l_len = 0; 8694 flk.l_sysid = 8695 sp->rs_owner->ro_client->rc_sysidt; 8696 flk.l_pid = 0; 8697 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8698 &flk, F_REMOTELOCK | FREAD | FWRITE, 8699 (u_offset_t)0, NULL, CRED(), NULL); 8700 } 8701 8702 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8703 } 8704 } 8705 8706 /* 8707 * Release all locks on this file by this lock owner or at 8708 * least mark the locks as having been released 8709 */ 8710 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8711 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8712 lsp->rls_locks_cleaned = TRUE; 8713 8714 /* Was this already taken care of above? */ 8715 if (!close_of_client && 8716 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8717 (void) cleanlocks(sp->rs_finfo->rf_vp, 8718 lsp->rls_locker->rl_pid, 8719 lsp->rls_locker->rl_client->rc_sysidt); 8720 } 8721 8722 /* 8723 * Release any shrlocks associated with this open state ID. 8724 * This must be done before the rfs4_state gets marked closed. 8725 */ 8726 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8727 (void) rfs4_unshare(sp); 8728 8729 if (sp->rs_open_access) { 8730 rfs4_dbe_lock(fp->rf_dbe); 8731 8732 /* 8733 * Decrement the count for each access and deny bit that this 8734 * state has contributed to the file. 8735 * If the file counts go to zero 8736 * clear the appropriate bit in the appropriate mask. 8737 */ 8738 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8739 fp->rf_access_read--; 8740 fflags |= FREAD; 8741 if (fp->rf_access_read == 0) 8742 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8743 } 8744 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8745 fp->rf_access_write--; 8746 fflags |= FWRITE; 8747 if (fp->rf_access_write == 0) 8748 fp->rf_share_access &= 8749 ~OPEN4_SHARE_ACCESS_WRITE; 8750 } 8751 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8752 fp->rf_deny_read--; 8753 if (fp->rf_deny_read == 0) 8754 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8755 } 8756 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8757 fp->rf_deny_write--; 8758 if (fp->rf_deny_write == 0) 8759 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8760 } 8761 8762 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8763 8764 rfs4_dbe_unlock(fp->rf_dbe); 8765 8766 sp->rs_open_access = 0; 8767 sp->rs_open_deny = 0; 8768 } 8769 } 8770 8771 /* 8772 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8773 */ 8774 static nfsstat4 8775 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8776 { 8777 rfs4_lockowner_t *lo; 8778 rfs4_client_t *cp; 8779 uint32_t len; 8780 8781 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8782 if (lo != NULL) { 8783 cp = lo->rl_client; 8784 if (rfs4_lease_expired(cp)) { 8785 rfs4_lockowner_rele(lo); 8786 rfs4_dbe_hold(cp->rc_dbe); 8787 rfs4_client_close(cp); 8788 return (NFS4ERR_EXPIRED); 8789 } 8790 dp->owner.clientid = lo->rl_owner.clientid; 8791 len = lo->rl_owner.owner_len; 8792 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8793 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8794 dp->owner.owner_len = len; 8795 rfs4_lockowner_rele(lo); 8796 goto finish; 8797 } 8798 8799 /* 8800 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8801 * of the client id contain the boot time for a NFS4 lock. So we 8802 * fabricate and identity by setting clientid to the sysid, and 8803 * the lock owner to the pid. 8804 */ 8805 dp->owner.clientid = flk->l_sysid; 8806 len = sizeof (pid_t); 8807 dp->owner.owner_len = len; 8808 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8809 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8810 finish: 8811 dp->offset = flk->l_start; 8812 dp->length = flk->l_len; 8813 8814 if (flk->l_type == F_RDLCK) 8815 dp->locktype = READ_LT; 8816 else if (flk->l_type == F_WRLCK) 8817 dp->locktype = WRITE_LT; 8818 else 8819 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8820 8821 return (NFS4_OK); 8822 } 8823 8824 /* 8825 * The NFSv4.0 LOCK operation does not support the blocking lock (at the 8826 * NFSv4.0 protocol level) so the client needs to resend the LOCK request in a 8827 * case the lock is denied by the NFSv4.0 server. NFSv4.0 clients are prepared 8828 * for that (obviously); they are sending the LOCK requests with some delays 8829 * between the attempts. See nfs4frlock() and nfs4_block_and_wait() for the 8830 * locking and delay implementation at the client side. 8831 * 8832 * To make the life of the clients easier, the NFSv4.0 server tries to do some 8833 * fast retries on its own (the for loop below) in a hope the lock will be 8834 * available soon. And if not, the client won't need to resend the LOCK 8835 * requests so fast to check the lock availability. This basically saves some 8836 * network traffic and tries to make sure the client gets the lock ASAP. 8837 */ 8838 static int 8839 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8840 { 8841 int error; 8842 struct flock64 flk; 8843 int i; 8844 clock_t delaytime; 8845 int cmd; 8846 int spin_cnt = 0; 8847 8848 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8849 retry: 8850 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8851 8852 for (i = 0; i < rfs4_maxlock_tries; i++) { 8853 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8854 error = VOP_FRLOCK(vp, cmd, 8855 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8856 8857 if (error != EAGAIN && error != EACCES) 8858 break; 8859 8860 if (i < rfs4_maxlock_tries - 1) { 8861 delay(delaytime); 8862 delaytime *= 2; 8863 } 8864 } 8865 8866 if (error == EAGAIN || error == EACCES) { 8867 /* Get the owner of the lock */ 8868 flk = *flock; 8869 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8870 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 0, NULL, cred, 8871 NULL) == 0) { 8872 /* 8873 * There's a race inherent in the current VOP_FRLOCK 8874 * design where: 8875 * a: "other guy" takes a lock that conflicts with a 8876 * lock we want 8877 * b: we attempt to take our lock (non-blocking) and 8878 * the attempt fails. 8879 * c: "other guy" releases the conflicting lock 8880 * d: we ask what lock conflicts with the lock we want, 8881 * getting F_UNLCK (no lock blocks us) 8882 * 8883 * If we retry the non-blocking lock attempt in this 8884 * case (restart at step 'b') there's some possibility 8885 * that many such attempts might fail. However a test 8886 * designed to actually provoke this race shows that 8887 * the vast majority of cases require no retry, and 8888 * only a few took as many as three retries. Here's 8889 * the test outcome: 8890 * 8891 * number of retries how many times we needed 8892 * that many retries 8893 * 0 79461 8894 * 1 862 8895 * 2 49 8896 * 3 5 8897 * 8898 * Given those empirical results, we arbitrarily limit 8899 * the retry count to ten. 8900 * 8901 * If we actually make to ten retries and give up, 8902 * nothing catastrophic happens, but we're unable to 8903 * return the information about the conflicting lock to 8904 * the NFS client. That's an acceptable trade off vs. 8905 * letting this retry loop run forever. 8906 */ 8907 if (flk.l_type == F_UNLCK) { 8908 if (spin_cnt++ < 10) { 8909 /* No longer locked, retry */ 8910 goto retry; 8911 } 8912 } else { 8913 *flock = flk; 8914 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8915 F_GETLK, &flk); 8916 } 8917 } 8918 } 8919 8920 return (error); 8921 } 8922 8923 /*ARGSUSED*/ 8924 static nfsstat4 8925 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8926 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8927 { 8928 nfsstat4 status; 8929 rfs4_lockowner_t *lo = lsp->rls_locker; 8930 rfs4_state_t *sp = lsp->rls_state; 8931 struct flock64 flock; 8932 int16_t ltype; 8933 int flag; 8934 int error; 8935 sysid_t sysid; 8936 LOCK4res *lres; 8937 vnode_t *vp; 8938 8939 if (rfs4_lease_expired(lo->rl_client)) { 8940 return (NFS4ERR_EXPIRED); 8941 } 8942 8943 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8944 return (status); 8945 8946 /* Check for zero length. To lock to end of file use all ones for V4 */ 8947 if (length == 0) 8948 return (NFS4ERR_INVAL); 8949 else if (length == (length4)(~0)) 8950 length = 0; /* Posix to end of file */ 8951 8952 retry: 8953 rfs4_dbe_lock(sp->rs_dbe); 8954 if (sp->rs_closed == TRUE) { 8955 rfs4_dbe_unlock(sp->rs_dbe); 8956 return (NFS4ERR_OLD_STATEID); 8957 } 8958 8959 if (resop->resop != OP_LOCKU) { 8960 switch (locktype) { 8961 case READ_LT: 8962 case READW_LT: 8963 if ((sp->rs_share_access 8964 & OPEN4_SHARE_ACCESS_READ) == 0) { 8965 rfs4_dbe_unlock(sp->rs_dbe); 8966 8967 return (NFS4ERR_OPENMODE); 8968 } 8969 ltype = F_RDLCK; 8970 break; 8971 case WRITE_LT: 8972 case WRITEW_LT: 8973 if ((sp->rs_share_access 8974 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8975 rfs4_dbe_unlock(sp->rs_dbe); 8976 8977 return (NFS4ERR_OPENMODE); 8978 } 8979 ltype = F_WRLCK; 8980 break; 8981 } 8982 } else 8983 ltype = F_UNLCK; 8984 8985 flock.l_type = ltype; 8986 flock.l_whence = 0; /* SEEK_SET */ 8987 flock.l_start = offset; 8988 flock.l_len = length; 8989 flock.l_sysid = sysid; 8990 flock.l_pid = lsp->rls_locker->rl_pid; 8991 8992 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8993 if (flock.l_len < 0 || flock.l_start < 0) { 8994 rfs4_dbe_unlock(sp->rs_dbe); 8995 return (NFS4ERR_INVAL); 8996 } 8997 8998 /* 8999 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 9000 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 9001 */ 9002 flag = (int)sp->rs_share_access | F_REMOTELOCK; 9003 9004 vp = sp->rs_finfo->rf_vp; 9005 VN_HOLD(vp); 9006 9007 /* 9008 * We need to unlock sp before we call the underlying filesystem to 9009 * acquire the file lock. 9010 */ 9011 rfs4_dbe_unlock(sp->rs_dbe); 9012 9013 error = setlock(vp, &flock, flag, cred); 9014 9015 /* 9016 * Make sure the file is still open. In a case the file was closed in 9017 * the meantime, clean the lock we acquired using the setlock() call 9018 * above, and return the appropriate error. 9019 */ 9020 rfs4_dbe_lock(sp->rs_dbe); 9021 if (sp->rs_closed == TRUE) { 9022 cleanlocks(vp, lsp->rls_locker->rl_pid, sysid); 9023 rfs4_dbe_unlock(sp->rs_dbe); 9024 9025 VN_RELE(vp); 9026 9027 return (NFS4ERR_OLD_STATEID); 9028 } 9029 rfs4_dbe_unlock(sp->rs_dbe); 9030 9031 VN_RELE(vp); 9032 9033 if (error == 0) { 9034 rfs4_dbe_lock(lsp->rls_dbe); 9035 next_stateid(&lsp->rls_lockid); 9036 rfs4_dbe_unlock(lsp->rls_dbe); 9037 } 9038 9039 /* 9040 * N.B. We map error values to nfsv4 errors. This is differrent 9041 * than puterrno4 routine. 9042 */ 9043 switch (error) { 9044 case 0: 9045 status = NFS4_OK; 9046 break; 9047 case EAGAIN: 9048 case EACCES: /* Old value */ 9049 /* Can only get here if op is OP_LOCK */ 9050 ASSERT(resop->resop == OP_LOCK); 9051 lres = &resop->nfs_resop4_u.oplock; 9052 status = NFS4ERR_DENIED; 9053 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 9054 == NFS4ERR_EXPIRED) 9055 goto retry; 9056 break; 9057 case ENOLCK: 9058 status = NFS4ERR_DELAY; 9059 break; 9060 case EOVERFLOW: 9061 status = NFS4ERR_INVAL; 9062 break; 9063 case EINVAL: 9064 status = NFS4ERR_NOTSUPP; 9065 break; 9066 default: 9067 status = NFS4ERR_SERVERFAULT; 9068 break; 9069 } 9070 9071 return (status); 9072 } 9073 9074 /*ARGSUSED*/ 9075 void 9076 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 9077 struct svc_req *req, struct compound_state *cs) 9078 { 9079 LOCK4args *args = &argop->nfs_argop4_u.oplock; 9080 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 9081 nfsstat4 status; 9082 stateid4 *stateid; 9083 rfs4_lockowner_t *lo; 9084 rfs4_client_t *cp; 9085 rfs4_state_t *sp = NULL; 9086 rfs4_lo_state_t *lsp = NULL; 9087 bool_t ls_sw_held = FALSE; 9088 bool_t create = TRUE; 9089 bool_t lcreate = TRUE; 9090 bool_t dup_lock = FALSE; 9091 int rc; 9092 9093 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 9094 LOCK4args *, args); 9095 9096 if (cs->vp == NULL) { 9097 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9098 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9099 cs, LOCK4res *, resp); 9100 return; 9101 } 9102 9103 if (args->locker.new_lock_owner) { 9104 /* Create a new lockowner for this instance */ 9105 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 9106 9107 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 9108 9109 stateid = &olo->open_stateid; 9110 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 9111 if (status != NFS4_OK) { 9112 NFS4_DEBUG(rfs4_debug, 9113 (CE_NOTE, "Get state failed in lock %d", status)); 9114 *cs->statusp = resp->status = status; 9115 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9116 cs, LOCK4res *, resp); 9117 return; 9118 } 9119 9120 /* Ensure specified filehandle matches */ 9121 if (cs->vp != sp->rs_finfo->rf_vp) { 9122 rfs4_state_rele(sp); 9123 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9124 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9125 cs, LOCK4res *, resp); 9126 return; 9127 } 9128 9129 /* hold off other access to open_owner while we tinker */ 9130 rfs4_sw_enter(&sp->rs_owner->ro_sw); 9131 9132 switch (rc = rfs4_check_stateid_seqid(sp, stateid, cs)) { 9133 case NFS4_CHECK_STATEID_OLD: 9134 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9135 goto end; 9136 case NFS4_CHECK_STATEID_BAD: 9137 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9138 goto end; 9139 case NFS4_CHECK_STATEID_EXPIRED: 9140 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9141 goto end; 9142 case NFS4_CHECK_STATEID_UNCONFIRMED: 9143 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9144 goto end; 9145 case NFS4_CHECK_STATEID_CLOSED: 9146 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9147 goto end; 9148 case NFS4_CHECK_STATEID_OKAY: 9149 if (rfs4_has_session(cs)) 9150 break; 9151 /* FALLTHROUGH */ 9152 case NFS4_CHECK_STATEID_REPLAY: 9153 ASSERT(!rfs4_has_session(cs)); 9154 9155 switch (rfs4_check_olo_seqid(olo->open_seqid, 9156 sp->rs_owner, resop)) { 9157 case NFS4_CHKSEQ_OKAY: 9158 if (rc == NFS4_CHECK_STATEID_OKAY) 9159 break; 9160 /* 9161 * This is replayed stateid; if seqid 9162 * matches next expected, then client 9163 * is using wrong seqid. 9164 */ 9165 /* FALLTHROUGH */ 9166 case NFS4_CHKSEQ_BAD: 9167 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9168 goto end; 9169 case NFS4_CHKSEQ_REPLAY: 9170 /* This is a duplicate LOCK request */ 9171 dup_lock = TRUE; 9172 9173 /* 9174 * For a duplicate we do not want to 9175 * create a new lockowner as it should 9176 * already exist. 9177 * Turn off the lockowner create flag. 9178 */ 9179 lcreate = FALSE; 9180 } 9181 break; 9182 } 9183 9184 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 9185 if (lo == NULL) { 9186 NFS4_DEBUG(rfs4_debug, 9187 (CE_NOTE, "rfs4_op_lock: no lock owner")); 9188 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 9189 goto end; 9190 } 9191 9192 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 9193 if (lsp == NULL) { 9194 rfs4_update_lease(sp->rs_owner->ro_client); 9195 /* 9196 * Only update theh open_seqid if this is not 9197 * a duplicate request 9198 */ 9199 if (dup_lock == FALSE) { 9200 rfs4_update_open_sequence(sp->rs_owner); 9201 } 9202 9203 NFS4_DEBUG(rfs4_debug, 9204 (CE_NOTE, "rfs4_op_lock: no state")); 9205 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 9206 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9207 rfs4_lockowner_rele(lo); 9208 goto end; 9209 } 9210 9211 /* 9212 * This is the new_lock_owner branch and the client is 9213 * supposed to be associating a new lock_owner with 9214 * the open file at this point. If we find that a 9215 * lock_owner/state association already exists and a 9216 * successful LOCK request was returned to the client, 9217 * an error is returned to the client since this is 9218 * not appropriate. The client should be using the 9219 * existing lock_owner branch. 9220 */ 9221 if (!rfs4_has_session(cs) && !dup_lock && !create) { 9222 if (lsp->rls_lock_completed == TRUE) { 9223 *cs->statusp = 9224 resp->status = NFS4ERR_BAD_SEQID; 9225 rfs4_lockowner_rele(lo); 9226 goto end; 9227 } 9228 } 9229 9230 rfs4_update_lease(sp->rs_owner->ro_client); 9231 9232 /* 9233 * Only update theh open_seqid if this is not 9234 * a duplicate request 9235 */ 9236 if (dup_lock == FALSE) { 9237 rfs4_update_open_sequence(sp->rs_owner); 9238 } 9239 9240 /* 9241 * If this is a duplicate lock request, just copy the 9242 * previously saved reply and return. 9243 */ 9244 if (dup_lock == TRUE) { 9245 /* verify that lock_seqid's match */ 9246 if (lsp->rls_seqid != olo->lock_seqid) { 9247 NFS4_DEBUG(rfs4_debug, 9248 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 9249 "lsp->seqid=%d old->seqid=%d", 9250 lsp->rls_seqid, olo->lock_seqid)); 9251 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9252 } else { 9253 rfs4_copy_reply(resop, &lsp->rls_reply); 9254 /* 9255 * Make sure to copy the just 9256 * retrieved reply status into the 9257 * overall compound status 9258 */ 9259 *cs->statusp = resp->status; 9260 } 9261 rfs4_lockowner_rele(lo); 9262 goto end; 9263 } 9264 9265 rfs4_dbe_lock(lsp->rls_dbe); 9266 9267 /* Make sure to update the lock sequence id */ 9268 lsp->rls_seqid = olo->lock_seqid; 9269 9270 NFS4_DEBUG(rfs4_debug, 9271 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 9272 9273 /* 9274 * This is used to signify the newly created lockowner 9275 * stateid and its sequence number. The checks for 9276 * sequence number and increment don't occur on the 9277 * very first lock request for a lockowner. 9278 */ 9279 lsp->rls_skip_seqid_check = TRUE; 9280 9281 /* hold off other access to lsp while we tinker */ 9282 rfs4_sw_enter(&lsp->rls_sw); 9283 ls_sw_held = TRUE; 9284 9285 rfs4_dbe_unlock(lsp->rls_dbe); 9286 9287 rfs4_lockowner_rele(lo); 9288 } else { 9289 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 9290 /* get lsp and hold the lock on the underlying file struct */ 9291 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 9292 != NFS4_OK) { 9293 *cs->statusp = resp->status = status; 9294 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9295 cs, LOCK4res *, resp); 9296 return; 9297 } 9298 create = FALSE; /* We didn't create lsp */ 9299 9300 /* Ensure specified filehandle matches */ 9301 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9302 rfs4_lo_state_rele(lsp, TRUE); 9303 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9304 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9305 cs, LOCK4res *, resp); 9306 return; 9307 } 9308 9309 /* hold off other access to lsp while we tinker */ 9310 rfs4_sw_enter(&lsp->rls_sw); 9311 ls_sw_held = TRUE; 9312 9313 switch (rfs4_check_lo_stateid_seqid(lsp, stateid, cs)) { 9314 /* 9315 * The stateid looks like it was okay (expected to be 9316 * the next one) 9317 */ 9318 case NFS4_CHECK_STATEID_OKAY: 9319 if (rfs4_has_session(cs)) 9320 break; 9321 9322 /* 9323 * The sequence id is now checked. Determine 9324 * if this is a replay or if it is in the 9325 * expected (next) sequence. In the case of a 9326 * replay, there are two replay conditions 9327 * that may occur. The first is the normal 9328 * condition where a LOCK is done with a 9329 * NFS4_OK response and the stateid is 9330 * updated. That case is handled below when 9331 * the stateid is identified as a REPLAY. The 9332 * second is the case where an error is 9333 * returned, like NFS4ERR_DENIED, and the 9334 * sequence number is updated but the stateid 9335 * is not updated. This second case is dealt 9336 * with here. So it may seem odd that the 9337 * stateid is okay but the sequence id is a 9338 * replay but it is okay. 9339 */ 9340 switch (rfs4_check_lock_seqid( 9341 args->locker.locker4_u.lock_owner.lock_seqid, 9342 lsp, resop)) { 9343 case NFS4_CHKSEQ_REPLAY: 9344 if (resp->status != NFS4_OK) { 9345 /* 9346 * Here is our replay and need 9347 * to verify that the last 9348 * response was an error. 9349 */ 9350 *cs->statusp = resp->status; 9351 goto end; 9352 } 9353 /* 9354 * This is done since the sequence id 9355 * looked like a replay but it didn't 9356 * pass our check so a BAD_SEQID is 9357 * returned as a result. 9358 */ 9359 /*FALLTHROUGH*/ 9360 case NFS4_CHKSEQ_BAD: 9361 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9362 goto end; 9363 case NFS4_CHKSEQ_OKAY: 9364 /* Everything looks okay move ahead */ 9365 break; 9366 } 9367 break; 9368 case NFS4_CHECK_STATEID_OLD: 9369 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9370 goto end; 9371 case NFS4_CHECK_STATEID_BAD: 9372 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9373 goto end; 9374 case NFS4_CHECK_STATEID_EXPIRED: 9375 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9376 goto end; 9377 case NFS4_CHECK_STATEID_CLOSED: 9378 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9379 goto end; 9380 case NFS4_CHECK_STATEID_REPLAY: 9381 ASSERT(!rfs4_has_session(cs)); 9382 9383 switch (rfs4_check_lock_seqid( 9384 args->locker.locker4_u.lock_owner.lock_seqid, 9385 lsp, resop)) { 9386 case NFS4_CHKSEQ_OKAY: 9387 /* 9388 * This is a replayed stateid; if 9389 * seqid matches the next expected, 9390 * then client is using wrong seqid. 9391 */ 9392 case NFS4_CHKSEQ_BAD: 9393 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9394 goto end; 9395 case NFS4_CHKSEQ_REPLAY: 9396 rfs4_update_lease(lsp->rls_locker->rl_client); 9397 *cs->statusp = status = resp->status; 9398 goto end; 9399 } 9400 break; 9401 default: 9402 ASSERT(FALSE); 9403 break; 9404 } 9405 9406 rfs4_update_lock_sequence(lsp); 9407 rfs4_update_lease(lsp->rls_locker->rl_client); 9408 } 9409 9410 /* 9411 * NFS4 only allows locking on regular files, so 9412 * verify type of object. 9413 */ 9414 if (cs->vp->v_type != VREG) { 9415 if (cs->vp->v_type == VDIR) 9416 status = NFS4ERR_ISDIR; 9417 else 9418 status = NFS4ERR_INVAL; 9419 goto out; 9420 } 9421 9422 cp = lsp->rls_state->rs_owner->ro_client; 9423 9424 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9425 status = NFS4ERR_GRACE; 9426 goto out; 9427 } 9428 9429 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9430 status = NFS4ERR_NO_GRACE; 9431 goto out; 9432 } 9433 9434 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9435 status = NFS4ERR_NO_GRACE; 9436 goto out; 9437 } 9438 9439 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9440 cs->deleg = TRUE; 9441 9442 status = rfs4_do_lock(lsp, args->locktype, 9443 args->offset, args->length, cs->cr, resop); 9444 9445 out: 9446 lsp->rls_skip_seqid_check = FALSE; 9447 9448 *cs->statusp = resp->status = status; 9449 9450 if (status == NFS4_OK) { 9451 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9452 lsp->rls_lock_completed = TRUE; 9453 } 9454 /* 9455 * Only update the "OPEN" response here if this was a new 9456 * lock_owner 9457 */ 9458 if (sp) 9459 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9460 9461 rfs4_update_lock_resp(lsp, resop); 9462 9463 end: 9464 if (lsp) { 9465 if (ls_sw_held) 9466 rfs4_sw_exit(&lsp->rls_sw); 9467 /* 9468 * If an sp obtained, then the lsp does not represent 9469 * a lock on the file struct. 9470 */ 9471 if (sp != NULL) 9472 rfs4_lo_state_rele(lsp, FALSE); 9473 else 9474 rfs4_lo_state_rele(lsp, TRUE); 9475 } 9476 if (sp) { 9477 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9478 rfs4_state_rele(sp); 9479 } 9480 9481 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9482 LOCK4res *, resp); 9483 } 9484 9485 /* free function for LOCK/LOCKT */ 9486 static void 9487 lock_denied_free(nfs_resop4 *resop) 9488 { 9489 LOCK4denied *dp = NULL; 9490 9491 switch (resop->resop) { 9492 case OP_LOCK: 9493 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9494 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9495 break; 9496 case OP_LOCKT: 9497 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9498 dp = &resop->nfs_resop4_u.oplockt.denied; 9499 break; 9500 default: 9501 break; 9502 } 9503 9504 if (dp) 9505 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9506 } 9507 9508 /*ARGSUSED*/ 9509 void 9510 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9511 struct svc_req *req, struct compound_state *cs) 9512 { 9513 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9514 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9515 nfsstat4 status; 9516 stateid4 *stateid = &args->lock_stateid; 9517 rfs4_lo_state_t *lsp; 9518 9519 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9520 LOCKU4args *, args); 9521 9522 if (cs->vp == NULL) { 9523 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9524 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9525 LOCKU4res *, resp); 9526 return; 9527 } 9528 9529 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9530 *cs->statusp = resp->status = status; 9531 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9532 LOCKU4res *, resp); 9533 return; 9534 } 9535 9536 /* Ensure specified filehandle matches */ 9537 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9538 rfs4_lo_state_rele(lsp, TRUE); 9539 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9540 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9541 LOCKU4res *, resp); 9542 return; 9543 } 9544 9545 /* hold off other access to lsp while we tinker */ 9546 rfs4_sw_enter(&lsp->rls_sw); 9547 9548 switch (rfs4_check_lo_stateid_seqid(lsp, stateid, cs)) { 9549 case NFS4_CHECK_STATEID_OKAY: 9550 if (rfs4_has_session(cs)) 9551 break; 9552 9553 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9554 != NFS4_CHKSEQ_OKAY) { 9555 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9556 goto end; 9557 } 9558 break; 9559 case NFS4_CHECK_STATEID_OLD: 9560 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9561 goto end; 9562 case NFS4_CHECK_STATEID_BAD: 9563 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9564 goto end; 9565 case NFS4_CHECK_STATEID_EXPIRED: 9566 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9567 goto end; 9568 case NFS4_CHECK_STATEID_CLOSED: 9569 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9570 goto end; 9571 case NFS4_CHECK_STATEID_REPLAY: 9572 ASSERT(!rfs4_has_session(cs)); 9573 9574 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9575 case NFS4_CHKSEQ_OKAY: 9576 /* 9577 * This is a replayed stateid; if 9578 * seqid matches the next expected, 9579 * then client is using wrong seqid. 9580 */ 9581 case NFS4_CHKSEQ_BAD: 9582 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9583 goto end; 9584 case NFS4_CHKSEQ_REPLAY: 9585 rfs4_update_lease(lsp->rls_locker->rl_client); 9586 *cs->statusp = status = resp->status; 9587 goto end; 9588 } 9589 break; 9590 default: 9591 ASSERT(FALSE); 9592 break; 9593 } 9594 9595 rfs4_update_lock_sequence(lsp); 9596 rfs4_update_lease(lsp->rls_locker->rl_client); 9597 9598 /* 9599 * NFS4 only allows locking on regular files, so 9600 * verify type of object. 9601 */ 9602 if (cs->vp->v_type != VREG) { 9603 if (cs->vp->v_type == VDIR) 9604 status = NFS4ERR_ISDIR; 9605 else 9606 status = NFS4ERR_INVAL; 9607 goto out; 9608 } 9609 9610 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9611 status = NFS4ERR_GRACE; 9612 goto out; 9613 } 9614 9615 status = rfs4_do_lock(lsp, args->locktype, 9616 args->offset, args->length, cs->cr, resop); 9617 9618 out: 9619 *cs->statusp = resp->status = status; 9620 9621 if (status == NFS4_OK) 9622 resp->lock_stateid = lsp->rls_lockid.stateid; 9623 9624 rfs4_update_lock_resp(lsp, resop); 9625 9626 end: 9627 rfs4_sw_exit(&lsp->rls_sw); 9628 rfs4_lo_state_rele(lsp, TRUE); 9629 9630 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9631 LOCKU4res *, resp); 9632 } 9633 9634 /* 9635 * LOCKT is a best effort routine, the client can not be guaranteed that 9636 * the status return is still in effect by the time the reply is received. 9637 * They are numerous race conditions in this routine, but we are not required 9638 * and can not be accurate. 9639 */ 9640 /*ARGSUSED*/ 9641 void 9642 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9643 struct svc_req *req, struct compound_state *cs) 9644 { 9645 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9646 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9647 rfs4_lockowner_t *lo; 9648 rfs4_client_t *cp; 9649 bool_t create = FALSE; 9650 struct flock64 flk; 9651 int error; 9652 int flag = FREAD | FWRITE; 9653 int ltype; 9654 length4 posix_length; 9655 sysid_t sysid; 9656 pid_t pid; 9657 9658 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9659 LOCKT4args *, args); 9660 9661 if (cs->vp == NULL) { 9662 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9663 goto out; 9664 } 9665 9666 /* 9667 * NFS4 only allows locking on regular files, so 9668 * verify type of object. 9669 */ 9670 if (cs->vp->v_type != VREG) { 9671 if (cs->vp->v_type == VDIR) 9672 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9673 else 9674 *cs->statusp = resp->status = NFS4ERR_INVAL; 9675 goto out; 9676 } 9677 9678 /* 9679 * Check out the clientid to ensure the server knows about it 9680 * so that we correctly inform the client of a server reboot. 9681 */ 9682 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9683 == NULL) { 9684 *cs->statusp = resp->status = 9685 rfs4_check_clientid(&args->owner.clientid, 0); 9686 goto out; 9687 } 9688 if (rfs4_lease_expired(cp)) { 9689 rfs4_client_close(cp); 9690 /* 9691 * Protocol doesn't allow returning NFS4ERR_STALE as 9692 * other operations do on this check so STALE_CLIENTID 9693 * is returned instead 9694 */ 9695 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9696 goto out; 9697 } 9698 9699 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9700 *cs->statusp = resp->status = NFS4ERR_GRACE; 9701 rfs4_client_rele(cp); 9702 goto out; 9703 } 9704 rfs4_client_rele(cp); 9705 9706 resp->status = NFS4_OK; 9707 9708 switch (args->locktype) { 9709 case READ_LT: 9710 case READW_LT: 9711 ltype = F_RDLCK; 9712 break; 9713 case WRITE_LT: 9714 case WRITEW_LT: 9715 ltype = F_WRLCK; 9716 break; 9717 } 9718 9719 posix_length = args->length; 9720 /* Check for zero length. To lock to end of file use all ones for V4 */ 9721 if (posix_length == 0) { 9722 *cs->statusp = resp->status = NFS4ERR_INVAL; 9723 goto out; 9724 } else if (posix_length == (length4)(~0)) { 9725 posix_length = 0; /* Posix to end of file */ 9726 } 9727 9728 /* Find or create a lockowner */ 9729 lo = rfs4_findlockowner(&args->owner, &create); 9730 9731 if (lo) { 9732 pid = lo->rl_pid; 9733 if ((resp->status = 9734 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9735 goto err; 9736 } else { 9737 pid = 0; 9738 sysid = lockt_sysid; 9739 } 9740 retry: 9741 flk.l_type = ltype; 9742 flk.l_whence = 0; /* SEEK_SET */ 9743 flk.l_start = args->offset; 9744 flk.l_len = posix_length; 9745 flk.l_sysid = sysid; 9746 flk.l_pid = pid; 9747 flag |= F_REMOTELOCK; 9748 9749 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9750 9751 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9752 if (flk.l_len < 0 || flk.l_start < 0) { 9753 resp->status = NFS4ERR_INVAL; 9754 goto err; 9755 } 9756 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9757 NULL, cs->cr, NULL); 9758 9759 /* 9760 * N.B. We map error values to nfsv4 errors. This is differrent 9761 * than puterrno4 routine. 9762 */ 9763 switch (error) { 9764 case 0: 9765 if (flk.l_type == F_UNLCK) 9766 resp->status = NFS4_OK; 9767 else { 9768 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9769 goto retry; 9770 resp->status = NFS4ERR_DENIED; 9771 } 9772 break; 9773 case EOVERFLOW: 9774 resp->status = NFS4ERR_INVAL; 9775 break; 9776 case EINVAL: 9777 resp->status = NFS4ERR_NOTSUPP; 9778 break; 9779 default: 9780 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9781 error); 9782 resp->status = NFS4ERR_SERVERFAULT; 9783 break; 9784 } 9785 9786 err: 9787 if (lo) 9788 rfs4_lockowner_rele(lo); 9789 *cs->statusp = resp->status; 9790 out: 9791 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9792 LOCKT4res *, resp); 9793 } 9794 9795 int 9796 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9797 { 9798 int err; 9799 int cmd; 9800 vnode_t *vp; 9801 struct shrlock shr; 9802 struct shr_locowner shr_loco; 9803 int fflags = 0; 9804 9805 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9806 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9807 9808 if (sp->rs_closed) 9809 return (NFS4ERR_OLD_STATEID); 9810 9811 vp = sp->rs_finfo->rf_vp; 9812 ASSERT(vp); 9813 9814 shr.s_access = shr.s_deny = 0; 9815 9816 if (access & OPEN4_SHARE_ACCESS_READ) { 9817 fflags |= FREAD; 9818 shr.s_access |= F_RDACC; 9819 } 9820 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9821 fflags |= FWRITE; 9822 shr.s_access |= F_WRACC; 9823 } 9824 ASSERT(shr.s_access); 9825 9826 if (deny & OPEN4_SHARE_DENY_READ) 9827 shr.s_deny |= F_RDDNY; 9828 if (deny & OPEN4_SHARE_DENY_WRITE) 9829 shr.s_deny |= F_WRDNY; 9830 9831 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9832 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9833 shr_loco.sl_pid = shr.s_pid; 9834 shr_loco.sl_id = shr.s_sysid; 9835 shr.s_owner = (caddr_t)&shr_loco; 9836 shr.s_own_len = sizeof (shr_loco); 9837 9838 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9839 9840 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9841 if (err != 0) { 9842 if (err == EAGAIN) 9843 err = NFS4ERR_SHARE_DENIED; 9844 else 9845 err = puterrno4(err); 9846 return (err); 9847 } 9848 9849 sp->rs_share_access |= access; 9850 sp->rs_share_deny |= deny; 9851 9852 return (0); 9853 } 9854 9855 int 9856 rfs4_unshare(rfs4_state_t *sp) 9857 { 9858 int err; 9859 struct shrlock shr; 9860 struct shr_locowner shr_loco; 9861 9862 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9863 9864 if (sp->rs_closed || sp->rs_share_access == 0) 9865 return (0); 9866 9867 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9868 ASSERT(sp->rs_finfo->rf_vp); 9869 9870 shr.s_access = shr.s_deny = 0; 9871 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9872 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9873 shr_loco.sl_pid = shr.s_pid; 9874 shr_loco.sl_id = shr.s_sysid; 9875 shr.s_owner = (caddr_t)&shr_loco; 9876 shr.s_own_len = sizeof (shr_loco); 9877 9878 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9879 NULL); 9880 if (err != 0) { 9881 err = puterrno4(err); 9882 return (err); 9883 } 9884 9885 sp->rs_share_access = 0; 9886 sp->rs_share_deny = 0; 9887 9888 return (0); 9889 9890 } 9891 9892 static int 9893 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9894 { 9895 struct clist *wcl; 9896 count4 count = rok->data_len; 9897 int wlist_len; 9898 9899 wcl = args->wlist; 9900 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9901 return (FALSE); 9902 } 9903 wcl = args->wlist; 9904 rok->wlist_len = wlist_len; 9905 rok->wlist = wcl; 9906 return (TRUE); 9907 } 9908 9909 /* tunable to disable server referrals */ 9910 int rfs4_no_referrals = 0; 9911 9912 /* 9913 * Find an NFS record in reparse point data. 9914 * Returns 0 for success and <0 or an errno value on failure. 9915 */ 9916 int 9917 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9918 { 9919 int err; 9920 char *stype, *val; 9921 nvlist_t *nvl; 9922 nvpair_t *curr; 9923 9924 if ((nvl = reparse_init()) == NULL) 9925 return (-1); 9926 9927 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9928 reparse_free(nvl); 9929 return (err); 9930 } 9931 9932 curr = NULL; 9933 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9934 if ((stype = nvpair_name(curr)) == NULL) { 9935 reparse_free(nvl); 9936 return (-2); 9937 } 9938 if (strncasecmp(stype, "NFS", 3) == 0) 9939 break; 9940 } 9941 9942 if ((curr == NULL) || 9943 (nvpair_value_string(curr, &val))) { 9944 reparse_free(nvl); 9945 return (-3); 9946 } 9947 *nvlp = nvl; 9948 *svcp = stype; 9949 *datap = val; 9950 return (0); 9951 } 9952 9953 int 9954 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9955 { 9956 nvlist_t *nvl; 9957 char *s, *d; 9958 9959 if (rfs4_no_referrals != 0) 9960 return (B_FALSE); 9961 9962 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9963 return (B_FALSE); 9964 9965 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9966 return (B_FALSE); 9967 9968 reparse_free(nvl); 9969 9970 return (B_TRUE); 9971 } 9972 9973 /* 9974 * There is a user-level copy of this routine in ref_subr.c. 9975 * Changes should be kept in sync. 9976 */ 9977 static int 9978 nfs4_create_components(char *path, component4 *comp4) 9979 { 9980 int slen, plen, ncomp; 9981 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9982 9983 if (path == NULL) 9984 return (0); 9985 9986 plen = strlen(path) + 1; /* include the terminator */ 9987 ori_path = path; 9988 ncomp = 0; 9989 9990 /* count number of components in the path */ 9991 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9992 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9993 if ((slen = nxtc - path) == 0) { 9994 path = nxtc + 1; 9995 continue; 9996 } 9997 9998 if (comp4 != NULL) { 9999 bcopy(path, buf, slen); 10000 buf[slen] = '\0'; 10001 (void) str_to_utf8(buf, &comp4[ncomp]); 10002 } 10003 10004 ncomp++; /* 1 valid component */ 10005 path = nxtc + 1; 10006 } 10007 if (*nxtc == '\0' || *nxtc == '\n') 10008 break; 10009 } 10010 10011 return (ncomp); 10012 } 10013 10014 /* 10015 * There is a user-level copy of this routine in ref_subr.c. 10016 * Changes should be kept in sync. 10017 */ 10018 static int 10019 make_pathname4(char *path, pathname4 *pathname) 10020 { 10021 int ncomp; 10022 component4 *comp4; 10023 10024 if (pathname == NULL) 10025 return (0); 10026 10027 if (path == NULL) { 10028 pathname->pathname4_val = NULL; 10029 pathname->pathname4_len = 0; 10030 return (0); 10031 } 10032 10033 /* count number of components to alloc buffer */ 10034 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 10035 pathname->pathname4_val = NULL; 10036 pathname->pathname4_len = 0; 10037 return (0); 10038 } 10039 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 10040 10041 /* copy components into allocated buffer */ 10042 ncomp = nfs4_create_components(path, comp4); 10043 10044 pathname->pathname4_val = comp4; 10045 pathname->pathname4_len = ncomp; 10046 10047 return (ncomp); 10048 } 10049 10050 #define xdr_fs_locations4 xdr_fattr4_fs_locations 10051 10052 fs_locations4 * 10053 fetch_referral(vnode_t *vp, cred_t *cr) 10054 { 10055 nvlist_t *nvl; 10056 char *stype, *sdata; 10057 fs_locations4 *result; 10058 char buf[1024]; 10059 size_t bufsize; 10060 XDR xdr; 10061 int err; 10062 10063 /* 10064 * Check attrs to ensure it's a reparse point 10065 */ 10066 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 10067 return (NULL); 10068 10069 /* 10070 * Look for an NFS record and get the type and data 10071 */ 10072 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 10073 return (NULL); 10074 10075 /* 10076 * With the type and data, upcall to get the referral 10077 */ 10078 bufsize = sizeof (buf); 10079 bzero(buf, sizeof (buf)); 10080 err = reparse_kderef((const char *)stype, (const char *)sdata, 10081 buf, &bufsize); 10082 reparse_free(nvl); 10083 10084 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 10085 char *, stype, char *, sdata, char *, buf, int, err); 10086 if (err) { 10087 cmn_err(CE_NOTE, 10088 "reparsed daemon not running: unable to get referral (%d)", 10089 err); 10090 return (NULL); 10091 } 10092 10093 /* 10094 * We get an XDR'ed record back from the kderef call 10095 */ 10096 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 10097 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 10098 err = xdr_fs_locations4(&xdr, result); 10099 XDR_DESTROY(&xdr); 10100 if (err != TRUE) { 10101 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 10102 int, err); 10103 return (NULL); 10104 } 10105 10106 /* 10107 * Look at path to recover fs_root, ignoring the leading '/' 10108 */ 10109 (void) make_pathname4(vp->v_path, &result->fs_root); 10110 10111 return (result); 10112 } 10113 10114 char * 10115 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 10116 { 10117 fs_locations4 *fsl; 10118 fs_location4 *fs; 10119 char *server, *path, *symbuf; 10120 static char *prefix = "/net/"; 10121 int i, size, npaths; 10122 uint_t len; 10123 10124 /* Get the referral */ 10125 if ((fsl = fetch_referral(vp, cr)) == NULL) 10126 return (NULL); 10127 10128 /* Deal with only the first location and first server */ 10129 fs = &fsl->locations_val[0]; 10130 server = utf8_to_str(&fs->server_val[0], &len, NULL); 10131 if (server == NULL) { 10132 rfs4_free_fs_locations4(fsl); 10133 kmem_free(fsl, sizeof (fs_locations4)); 10134 return (NULL); 10135 } 10136 10137 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 10138 size = strlen(prefix) + len; 10139 for (i = 0; i < fs->rootpath.pathname4_len; i++) 10140 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 10141 10142 /* Allocate the symlink buffer and fill it */ 10143 symbuf = kmem_zalloc(size, KM_SLEEP); 10144 (void) strcat(symbuf, prefix); 10145 (void) strcat(symbuf, server); 10146 kmem_free(server, len); 10147 10148 npaths = 0; 10149 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 10150 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 10151 if (path == NULL) 10152 continue; 10153 (void) strcat(symbuf, "/"); 10154 (void) strcat(symbuf, path); 10155 npaths++; 10156 kmem_free(path, len); 10157 } 10158 10159 rfs4_free_fs_locations4(fsl); 10160 kmem_free(fsl, sizeof (fs_locations4)); 10161 10162 if (strsz != NULL) 10163 *strsz = size; 10164 return (symbuf); 10165 } 10166 10167 /* 10168 * Check to see if we have a downrev Solaris client, so that we 10169 * can send it a symlink instead of a referral. 10170 */ 10171 int 10172 client_is_downrev(struct svc_req *req) 10173 { 10174 struct sockaddr *ca; 10175 rfs4_clntip_t *ci; 10176 bool_t create = FALSE; 10177 int is_downrev; 10178 10179 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 10180 ASSERT(ca); 10181 ci = rfs4_find_clntip(ca, &create); 10182 if (ci == NULL) 10183 return (0); 10184 is_downrev = ci->ri_no_referrals; 10185 rfs4_dbe_rele(ci->ri_dbe); 10186 return (is_downrev); 10187 } 10188 10189 /* 10190 * Do the main work of handling HA-NFSv4 Resource Group failover on 10191 * Sun Cluster. 10192 * We need to detect whether any RG admin paths have been added or removed, 10193 * and adjust resources accordingly. 10194 * Currently we're using a very inefficient algorithm, ~ 2 * O(n**2). In 10195 * order to scale, the list and array of paths need to be held in more 10196 * suitable data structures. 10197 */ 10198 static void 10199 hanfsv4_failover(nfs4_srv_t *nsrv4) 10200 { 10201 int i, start_grace, numadded_paths = 0; 10202 char **added_paths = NULL; 10203 rfs4_dss_path_t *dss_path; 10204 10205 /* 10206 * Note: currently, dss_pathlist cannot be NULL, since 10207 * it will always include an entry for NFS4_DSS_VAR_DIR. If we 10208 * make the latter dynamically specified too, the following will 10209 * need to be adjusted. 10210 */ 10211 10212 /* 10213 * First, look for removed paths: RGs that have been failed-over 10214 * away from this node. 10215 * Walk the "currently-serving" dss_pathlist and, for each 10216 * path, check if it is on the "passed-in" rfs4_dss_newpaths array 10217 * from nfsd. If not, that RG path has been removed. 10218 * 10219 * Note that nfsd has sorted rfs4_dss_newpaths for us, and removed 10220 * any duplicates. 10221 */ 10222 dss_path = nsrv4->dss_pathlist; 10223 do { 10224 int found = 0; 10225 char *path = dss_path->path; 10226 10227 /* used only for non-HA so may not be removed */ 10228 if (strcmp(path, NFS4_DSS_VAR_DIR) == 0) { 10229 dss_path = dss_path->next; 10230 continue; 10231 } 10232 10233 for (i = 0; i < rfs4_dss_numnewpaths; i++) { 10234 int cmpret; 10235 char *newpath = rfs4_dss_newpaths[i]; 10236 10237 /* 10238 * Since nfsd has sorted rfs4_dss_newpaths for us, 10239 * once the return from strcmp is negative we know 10240 * we've passed the point where "path" should be, 10241 * and can stop searching: "path" has been removed. 10242 */ 10243 cmpret = strcmp(path, newpath); 10244 if (cmpret < 0) 10245 break; 10246 if (cmpret == 0) { 10247 found = 1; 10248 break; 10249 } 10250 } 10251 10252 if (found == 0) { 10253 unsigned index = dss_path->index; 10254 rfs4_servinst_t *sip = dss_path->sip; 10255 rfs4_dss_path_t *path_next = dss_path->next; 10256 10257 /* 10258 * This path has been removed. 10259 * We must clear out the servinst reference to 10260 * it, since it's now owned by another 10261 * node: we should not attempt to touch it. 10262 */ 10263 ASSERT(dss_path == sip->dss_paths[index]); 10264 sip->dss_paths[index] = NULL; 10265 10266 /* remove from "currently-serving" list, and destroy */ 10267 remque(dss_path); 10268 /* allow for NUL */ 10269 kmem_free(dss_path->path, strlen(dss_path->path) + 1); 10270 kmem_free(dss_path, sizeof (rfs4_dss_path_t)); 10271 10272 dss_path = path_next; 10273 } else { 10274 /* path was found; not removed */ 10275 dss_path = dss_path->next; 10276 } 10277 } while (dss_path != nsrv4->dss_pathlist); 10278 10279 /* 10280 * Now, look for added paths: RGs that have been failed-over 10281 * to this node. 10282 * Walk the "passed-in" rfs4_dss_newpaths array from nfsd and, 10283 * for each path, check if it is on the "currently-serving" 10284 * dss_pathlist. If not, that RG path has been added. 10285 * 10286 * Note: we don't do duplicate detection here; nfsd does that for us. 10287 * 10288 * Note: numadded_paths <= rfs4_dss_numnewpaths, which gives us 10289 * an upper bound for the size needed for added_paths[numadded_paths]. 10290 */ 10291 10292 /* probably more space than we need, but guaranteed to be enough */ 10293 if (rfs4_dss_numnewpaths > 0) { 10294 size_t sz = rfs4_dss_numnewpaths * sizeof (char *); 10295 added_paths = kmem_zalloc(sz, KM_SLEEP); 10296 } 10297 10298 /* walk the "passed-in" rfs4_dss_newpaths array from nfsd */ 10299 for (i = 0; i < rfs4_dss_numnewpaths; i++) { 10300 int found = 0; 10301 char *newpath = rfs4_dss_newpaths[i]; 10302 10303 dss_path = nsrv4->dss_pathlist; 10304 do { 10305 char *path = dss_path->path; 10306 10307 /* used only for non-HA */ 10308 if (strcmp(path, NFS4_DSS_VAR_DIR) == 0) { 10309 dss_path = dss_path->next; 10310 continue; 10311 } 10312 10313 if (strncmp(path, newpath, strlen(path)) == 0) { 10314 found = 1; 10315 break; 10316 } 10317 10318 dss_path = dss_path->next; 10319 } while (dss_path != nsrv4->dss_pathlist); 10320 10321 if (found == 0) { 10322 added_paths[numadded_paths] = newpath; 10323 numadded_paths++; 10324 } 10325 } 10326 10327 /* did we find any added paths? */ 10328 if (numadded_paths > 0) { 10329 10330 /* create a new server instance, and start its grace period */ 10331 start_grace = 1; 10332 /* CSTYLED */ 10333 rfs4_servinst_create(nsrv4, start_grace, numadded_paths, added_paths); 10334 10335 /* read in the stable storage state from these paths */ 10336 rfs4_dss_readstate(nsrv4, numadded_paths, added_paths); 10337 10338 /* 10339 * Multiple failovers during a grace period will cause 10340 * clients of the same resource group to be partitioned 10341 * into different server instances, with different 10342 * grace periods. Since clients of the same resource 10343 * group must be subject to the same grace period, 10344 * we need to reset all currently active grace periods. 10345 */ 10346 rfs4_grace_reset_all(nsrv4); 10347 } 10348 10349 if (rfs4_dss_numnewpaths > 0) 10350 kmem_free(added_paths, rfs4_dss_numnewpaths * sizeof (char *)); 10351 } 10352