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 */ 36 37 #include <sys/param.h> 38 #include <sys/types.h> 39 #include <sys/systm.h> 40 #include <sys/cred.h> 41 #include <sys/buf.h> 42 #include <sys/vfs.h> 43 #include <sys/vfs_opreg.h> 44 #include <sys/vnode.h> 45 #include <sys/uio.h> 46 #include <sys/errno.h> 47 #include <sys/sysmacros.h> 48 #include <sys/statvfs.h> 49 #include <sys/kmem.h> 50 #include <sys/dirent.h> 51 #include <sys/cmn_err.h> 52 #include <sys/debug.h> 53 #include <sys/systeminfo.h> 54 #include <sys/flock.h> 55 #include <sys/pathname.h> 56 #include <sys/nbmlock.h> 57 #include <sys/share.h> 58 #include <sys/atomic.h> 59 #include <sys/policy.h> 60 #include <sys/fem.h> 61 #include <sys/sdt.h> 62 #include <sys/ddi.h> 63 #include <sys/zone.h> 64 65 #include <fs/fs_reparse.h> 66 67 #include <rpc/types.h> 68 #include <rpc/auth.h> 69 #include <rpc/rpcsec_gss.h> 70 #include <rpc/svc.h> 71 72 #include <nfs/nfs.h> 73 #include <nfs/nfssys.h> 74 #include <nfs/export.h> 75 #include <nfs/nfs_cmd.h> 76 #include <nfs/lm.h> 77 #include <nfs/nfs4.h> 78 #include <nfs/nfs4_drc.h> 79 80 #include <sys/strsubr.h> 81 #include <sys/strsun.h> 82 83 #include <inet/common.h> 84 #include <inet/ip.h> 85 #include <inet/ip6.h> 86 87 #include <sys/tsol/label.h> 88 #include <sys/tsol/tndb.h> 89 90 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 91 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 92 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 93 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 94 extern struct svc_ops rdma_svc_ops; 95 extern int nfs_loaned_buffers; 96 /* End of Tunables */ 97 98 static int rdma_setup_read_data4(READ4args *, READ4res *); 99 100 /* 101 * Used to bump the stateid4.seqid value and show changes in the stateid 102 */ 103 #define next_stateid(sp) (++(sp)->bits.chgseq) 104 105 /* 106 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 107 * This is used to return NFS4ERR_TOOSMALL when clients specify 108 * maxcount that isn't large enough to hold the smallest possible 109 * XDR encoded dirent. 110 * 111 * sizeof cookie (8 bytes) + 112 * sizeof name_len (4 bytes) + 113 * sizeof smallest (padded) name (4 bytes) + 114 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 115 * sizeof attrlist4_len (4 bytes) + 116 * sizeof next boolean (4 bytes) 117 * 118 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 119 * the smallest possible entry4 (assumes no attrs requested). 120 * sizeof nfsstat4 (4 bytes) + 121 * sizeof verifier4 (8 bytes) + 122 * sizeof entry4list bool (4 bytes) + 123 * sizeof entry4 (36 bytes) + 124 * sizeof eof bool (4 bytes) 125 * 126 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 127 * VOP_READDIR. Its value is the size of the maximum possible dirent 128 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 129 * required for a given name length. MAXNAMELEN is the maximum 130 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 131 * macros are to allow for . and .. entries -- just a minor tweak to try 132 * and guarantee that buffer we give to VOP_READDIR will be large enough 133 * to hold ., .., and the largest possible solaris dirent64. 134 */ 135 #define RFS4_MINLEN_ENTRY4 36 136 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 137 #define RFS4_MINLEN_RDDIR_BUF \ 138 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 139 140 /* 141 * It would be better to pad to 4 bytes since that's what XDR would do, 142 * but the dirents UFS gives us are already padded to 8, so just take 143 * what we're given. Dircount is only a hint anyway. Currently the 144 * solaris kernel is ASCII only, so there's no point in calling the 145 * UTF8 functions. 146 * 147 * dirent64: named padded to provide 8 byte struct alignment 148 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 149 * 150 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 151 * 152 */ 153 #define DIRENT64_TO_DIRCOUNT(dp) \ 154 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 155 156 157 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 158 159 u_longlong_t nfs4_srv_caller_id; 160 uint_t nfs4_srv_vkey = 0; 161 162 void rfs4_init_compound_state(struct compound_state *); 163 164 static void nullfree(caddr_t); 165 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 166 struct compound_state *); 167 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 168 struct compound_state *); 169 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 170 struct compound_state *); 171 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 172 struct compound_state *); 173 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 174 struct compound_state *); 175 static void rfs4_op_create_free(nfs_resop4 *resop); 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_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 189 struct compound_state *); 190 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 191 struct compound_state *); 192 static void lock_denied_free(nfs_resop4 *); 193 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 194 struct compound_state *); 195 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 196 struct compound_state *); 197 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 198 struct compound_state *); 199 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 200 struct compound_state *); 201 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 202 struct svc_req *req, struct compound_state *cs); 203 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 204 struct compound_state *); 205 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 206 struct compound_state *); 207 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 208 struct svc_req *, struct compound_state *); 209 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 210 struct svc_req *, struct compound_state *); 211 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 212 struct compound_state *); 213 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 214 struct compound_state *); 215 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 216 struct compound_state *); 217 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 218 struct compound_state *); 219 static void rfs4_op_read_free(nfs_resop4 *); 220 static void rfs4_op_readdir_free(nfs_resop4 *resop); 221 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 222 struct compound_state *); 223 static void rfs4_op_readlink_free(nfs_resop4 *); 224 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 225 struct svc_req *, struct compound_state *); 226 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 227 struct compound_state *); 228 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 229 struct compound_state *); 230 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 231 struct compound_state *); 232 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 233 struct compound_state *); 234 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 235 struct compound_state *); 236 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 237 struct compound_state *); 238 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 239 struct compound_state *); 240 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 241 struct compound_state *); 242 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 243 struct svc_req *, struct compound_state *); 244 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 245 struct svc_req *req, struct compound_state *); 246 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 247 struct compound_state *); 248 static void rfs4_op_secinfo_free(nfs_resop4 *); 249 250 static nfsstat4 check_open_access(uint32_t, struct compound_state *, 251 struct svc_req *); 252 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 253 void rfs4_ss_clid(nfs4_srv_t *, rfs4_client_t *); 254 255 256 /* 257 * translation table for attrs 258 */ 259 struct nfs4_ntov_table { 260 union nfs4_attr_u *na; 261 uint8_t amap[NFS4_MAXNUM_ATTRS]; 262 int attrcnt; 263 bool_t vfsstat; 264 }; 265 266 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 267 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 268 struct nfs4_svgetit_arg *sargp); 269 270 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 271 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 272 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 273 274 static void hanfsv4_failover(nfs4_srv_t *); 275 276 fem_t *deleg_rdops; 277 fem_t *deleg_wrops; 278 279 /* 280 * NFS4 op dispatch table 281 */ 282 283 struct rfsv4disp { 284 void (*dis_proc)(); /* proc to call */ 285 void (*dis_resfree)(); /* frees space allocated by proc */ 286 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 287 }; 288 289 static struct rfsv4disp rfsv4disptab[] = { 290 /* 291 * NFS VERSION 4 292 */ 293 294 /* RFS_NULL = 0 */ 295 {rfs4_op_illegal, nullfree, 0}, 296 297 /* UNUSED = 1 */ 298 {rfs4_op_illegal, nullfree, 0}, 299 300 /* UNUSED = 2 */ 301 {rfs4_op_illegal, nullfree, 0}, 302 303 /* OP_ACCESS = 3 */ 304 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 305 306 /* OP_CLOSE = 4 */ 307 {rfs4_op_close, nullfree, 0}, 308 309 /* OP_COMMIT = 5 */ 310 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 311 312 /* OP_CREATE = 6 */ 313 {rfs4_op_create, nullfree, 0}, 314 315 /* OP_DELEGPURGE = 7 */ 316 {rfs4_op_delegpurge, nullfree, 0}, 317 318 /* OP_DELEGRETURN = 8 */ 319 {rfs4_op_delegreturn, nullfree, 0}, 320 321 /* OP_GETATTR = 9 */ 322 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 323 324 /* OP_GETFH = 10 */ 325 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 326 327 /* OP_LINK = 11 */ 328 {rfs4_op_link, nullfree, 0}, 329 330 /* OP_LOCK = 12 */ 331 {rfs4_op_lock, lock_denied_free, 0}, 332 333 /* OP_LOCKT = 13 */ 334 {rfs4_op_lockt, lock_denied_free, 0}, 335 336 /* OP_LOCKU = 14 */ 337 {rfs4_op_locku, nullfree, 0}, 338 339 /* OP_LOOKUP = 15 */ 340 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 341 342 /* OP_LOOKUPP = 16 */ 343 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 344 345 /* OP_NVERIFY = 17 */ 346 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 347 348 /* OP_OPEN = 18 */ 349 {rfs4_op_open, rfs4_free_reply, 0}, 350 351 /* OP_OPENATTR = 19 */ 352 {rfs4_op_openattr, nullfree, 0}, 353 354 /* OP_OPEN_CONFIRM = 20 */ 355 {rfs4_op_open_confirm, nullfree, 0}, 356 357 /* OP_OPEN_DOWNGRADE = 21 */ 358 {rfs4_op_open_downgrade, nullfree, 0}, 359 360 /* OP_OPEN_PUTFH = 22 */ 361 {rfs4_op_putfh, nullfree, RPC_ALL}, 362 363 /* OP_PUTPUBFH = 23 */ 364 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 365 366 /* OP_PUTROOTFH = 24 */ 367 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 368 369 /* OP_READ = 25 */ 370 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 371 372 /* OP_READDIR = 26 */ 373 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 374 375 /* OP_READLINK = 27 */ 376 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 377 378 /* OP_REMOVE = 28 */ 379 {rfs4_op_remove, nullfree, 0}, 380 381 /* OP_RENAME = 29 */ 382 {rfs4_op_rename, nullfree, 0}, 383 384 /* OP_RENEW = 30 */ 385 {rfs4_op_renew, nullfree, 0}, 386 387 /* OP_RESTOREFH = 31 */ 388 {rfs4_op_restorefh, nullfree, RPC_ALL}, 389 390 /* OP_SAVEFH = 32 */ 391 {rfs4_op_savefh, nullfree, RPC_ALL}, 392 393 /* OP_SECINFO = 33 */ 394 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 395 396 /* OP_SETATTR = 34 */ 397 {rfs4_op_setattr, nullfree, 0}, 398 399 /* OP_SETCLIENTID = 35 */ 400 {rfs4_op_setclientid, nullfree, 0}, 401 402 /* OP_SETCLIENTID_CONFIRM = 36 */ 403 {rfs4_op_setclientid_confirm, nullfree, 0}, 404 405 /* OP_VERIFY = 37 */ 406 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 407 408 /* OP_WRITE = 38 */ 409 {rfs4_op_write, nullfree, 0}, 410 411 /* OP_RELEASE_LOCKOWNER = 39 */ 412 {rfs4_op_release_lockowner, nullfree, 0}, 413 }; 414 415 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 416 417 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 418 419 #ifdef DEBUG 420 421 int rfs4_fillone_debug = 0; 422 int rfs4_no_stub_access = 1; 423 int rfs4_rddir_debug = 0; 424 425 static char *rfs4_op_string[] = { 426 "rfs4_op_null", 427 "rfs4_op_1 unused", 428 "rfs4_op_2 unused", 429 "rfs4_op_access", 430 "rfs4_op_close", 431 "rfs4_op_commit", 432 "rfs4_op_create", 433 "rfs4_op_delegpurge", 434 "rfs4_op_delegreturn", 435 "rfs4_op_getattr", 436 "rfs4_op_getfh", 437 "rfs4_op_link", 438 "rfs4_op_lock", 439 "rfs4_op_lockt", 440 "rfs4_op_locku", 441 "rfs4_op_lookup", 442 "rfs4_op_lookupp", 443 "rfs4_op_nverify", 444 "rfs4_op_open", 445 "rfs4_op_openattr", 446 "rfs4_op_open_confirm", 447 "rfs4_op_open_downgrade", 448 "rfs4_op_putfh", 449 "rfs4_op_putpubfh", 450 "rfs4_op_putrootfh", 451 "rfs4_op_read", 452 "rfs4_op_readdir", 453 "rfs4_op_readlink", 454 "rfs4_op_remove", 455 "rfs4_op_rename", 456 "rfs4_op_renew", 457 "rfs4_op_restorefh", 458 "rfs4_op_savefh", 459 "rfs4_op_secinfo", 460 "rfs4_op_setattr", 461 "rfs4_op_setclientid", 462 "rfs4_op_setclient_confirm", 463 "rfs4_op_verify", 464 "rfs4_op_write", 465 "rfs4_op_release_lockowner", 466 "rfs4_op_illegal" 467 }; 468 #endif 469 470 void rfs4_ss_chkclid(nfs4_srv_t *, rfs4_client_t *); 471 472 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 473 474 extern void rfs4_free_fs_locations4(fs_locations4 *); 475 476 #ifdef nextdp 477 #undef nextdp 478 #endif 479 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 480 481 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 482 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 483 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 484 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 485 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 486 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 487 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 488 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 489 NULL, NULL 490 }; 491 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 492 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 493 VOPNAME_READ, { .femop_read = deleg_wr_read }, 494 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 495 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 496 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 497 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 498 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 499 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 500 NULL, NULL 501 }; 502 503 nfs4_srv_t * 504 nfs4_get_srv(void) 505 { 506 nfs_globals_t *ng = nfs_srv_getzg(); 507 nfs4_srv_t *srv = ng->nfs4_srv; 508 ASSERT(srv != NULL); 509 return (srv); 510 } 511 512 void 513 rfs4_srv_zone_init(nfs_globals_t *ng) 514 { 515 nfs4_srv_t *nsrv4; 516 timespec32_t verf; 517 518 nsrv4 = kmem_zalloc(sizeof (*nsrv4), KM_SLEEP); 519 520 /* 521 * The following algorithm attempts to find a unique verifier 522 * to be used as the write verifier returned from the server 523 * to the client. It is important that this verifier change 524 * whenever the server reboots. Of secondary importance, it 525 * is important for the verifier to be unique between two 526 * different servers. 527 * 528 * Thus, an attempt is made to use the system hostid and the 529 * current time in seconds when the nfssrv kernel module is 530 * loaded. It is assumed that an NFS server will not be able 531 * to boot and then to reboot in less than a second. If the 532 * hostid has not been set, then the current high resolution 533 * time is used. This will ensure different verifiers each 534 * time the server reboots and minimize the chances that two 535 * different servers will have the same verifier. 536 * XXX - this is broken on LP64 kernels. 537 */ 538 verf.tv_sec = (time_t)zone_get_hostid(NULL); 539 if (verf.tv_sec != 0) { 540 verf.tv_nsec = gethrestime_sec(); 541 } else { 542 timespec_t tverf; 543 544 gethrestime(&tverf); 545 verf.tv_sec = (time_t)tverf.tv_sec; 546 verf.tv_nsec = tverf.tv_nsec; 547 } 548 nsrv4->write4verf = *(uint64_t *)&verf; 549 550 /* Used to manage create/destroy of server state */ 551 nsrv4->nfs4_server_state = NULL; 552 nsrv4->nfs4_cur_servinst = NULL; 553 nsrv4->nfs4_deleg_policy = SRV_NEVER_DELEGATE; 554 mutex_init(&nsrv4->deleg_lock, NULL, MUTEX_DEFAULT, NULL); 555 mutex_init(&nsrv4->state_lock, NULL, MUTEX_DEFAULT, NULL); 556 mutex_init(&nsrv4->servinst_lock, NULL, MUTEX_DEFAULT, NULL); 557 rw_init(&nsrv4->deleg_policy_lock, NULL, RW_DEFAULT, NULL); 558 559 ng->nfs4_srv = nsrv4; 560 } 561 562 void 563 rfs4_srv_zone_fini(nfs_globals_t *ng) 564 { 565 nfs4_srv_t *nsrv4 = ng->nfs4_srv; 566 567 ng->nfs4_srv = NULL; 568 569 mutex_destroy(&nsrv4->deleg_lock); 570 mutex_destroy(&nsrv4->state_lock); 571 mutex_destroy(&nsrv4->servinst_lock); 572 rw_destroy(&nsrv4->deleg_policy_lock); 573 574 kmem_free(nsrv4, sizeof (*nsrv4)); 575 } 576 577 void 578 rfs4_srvrinit(void) 579 { 580 extern void rfs4_attr_init(); 581 582 rfs4_attr_init(); 583 584 if (fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops) != 0) { 585 rfs4_disable_delegation(); 586 } else if (fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 587 &deleg_wrops) != 0) { 588 rfs4_disable_delegation(); 589 fem_free(deleg_rdops); 590 } 591 592 nfs4_srv_caller_id = fs_new_caller_id(); 593 lockt_sysid = lm_alloc_sysidt(); 594 vsd_create(&nfs4_srv_vkey, NULL); 595 rfs4_state_g_init(); 596 } 597 598 void 599 rfs4_srvrfini(void) 600 { 601 if (lockt_sysid != LM_NOSYSID) { 602 lm_free_sysidt(lockt_sysid); 603 lockt_sysid = LM_NOSYSID; 604 } 605 606 rfs4_state_g_fini(); 607 608 fem_free(deleg_rdops); 609 fem_free(deleg_wrops); 610 } 611 612 void 613 rfs4_do_server_start(int server_upordown, 614 int srv_delegation, int cluster_booted) 615 { 616 nfs4_srv_t *nsrv4 = nfs4_get_srv(); 617 618 /* Is this a warm start? */ 619 if (server_upordown == NFS_SERVER_QUIESCED) { 620 cmn_err(CE_NOTE, "nfs4_srv: " 621 "server was previously quiesced; " 622 "existing NFSv4 state will be re-used"); 623 624 /* 625 * HA-NFSv4: this is also the signal 626 * that a Resource Group failover has 627 * occurred. 628 */ 629 if (cluster_booted) 630 hanfsv4_failover(nsrv4); 631 } else { 632 /* Cold start */ 633 nsrv4->rfs4_start_time = 0; 634 rfs4_state_zone_init(nsrv4); 635 nsrv4->nfs4_drc = rfs4_init_drc(nfs4_drc_max, 636 nfs4_drc_hash); 637 638 /* 639 * The nfsd service was started with the -s option 640 * we need to pull in any state from the paths indicated. 641 */ 642 if (curzone == global_zone && rfs4_dss_numnewpaths > 0) { 643 /* read in the stable storage state from these paths */ 644 rfs4_dss_readstate(nsrv4, rfs4_dss_numnewpaths, 645 rfs4_dss_newpaths); 646 } 647 } 648 649 /* Check if delegation is to be enabled */ 650 if (srv_delegation != FALSE) 651 rfs4_set_deleg_policy(nsrv4, SRV_NORMAL_DELEGATE); 652 } 653 654 void 655 rfs4_init_compound_state(struct compound_state *cs) 656 { 657 bzero(cs, sizeof (*cs)); 658 cs->cont = TRUE; 659 cs->access = CS_ACCESS_DENIED; 660 cs->deleg = FALSE; 661 cs->mandlock = FALSE; 662 cs->fh.nfs_fh4_val = cs->fhbuf; 663 } 664 665 void 666 rfs4_grace_start(rfs4_servinst_t *sip) 667 { 668 rw_enter(&sip->rwlock, RW_WRITER); 669 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); 670 sip->grace_period = rfs4_grace_period; 671 rw_exit(&sip->rwlock); 672 } 673 674 /* 675 * returns true if the instance's grace period has never been started 676 */ 677 int 678 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 679 { 680 time_t start_time; 681 682 rw_enter(&sip->rwlock, RW_READER); 683 start_time = sip->start_time; 684 rw_exit(&sip->rwlock); 685 686 return (start_time == 0); 687 } 688 689 /* 690 * Indicates if server instance is within the 691 * grace period. 692 */ 693 int 694 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 695 { 696 time_t grace_expiry; 697 698 rw_enter(&sip->rwlock, RW_READER); 699 grace_expiry = sip->start_time + sip->grace_period; 700 rw_exit(&sip->rwlock); 701 702 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); 703 } 704 705 int 706 rfs4_clnt_in_grace(rfs4_client_t *cp) 707 { 708 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 709 710 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 711 } 712 713 /* 714 * reset all currently active grace periods 715 */ 716 void 717 rfs4_grace_reset_all(nfs4_srv_t *nsrv4) 718 { 719 rfs4_servinst_t *sip; 720 721 mutex_enter(&nsrv4->servinst_lock); 722 for (sip = nsrv4->nfs4_cur_servinst; sip != NULL; sip = sip->prev) 723 if (rfs4_servinst_in_grace(sip)) 724 rfs4_grace_start(sip); 725 mutex_exit(&nsrv4->servinst_lock); 726 } 727 728 /* 729 * start any new instances' grace periods 730 */ 731 void 732 rfs4_grace_start_new(nfs4_srv_t *nsrv4) 733 { 734 rfs4_servinst_t *sip; 735 736 mutex_enter(&nsrv4->servinst_lock); 737 for (sip = nsrv4->nfs4_cur_servinst; sip != NULL; sip = sip->prev) 738 if (rfs4_servinst_grace_new(sip)) 739 rfs4_grace_start(sip); 740 mutex_exit(&nsrv4->servinst_lock); 741 } 742 743 static rfs4_dss_path_t * 744 rfs4_dss_newpath(nfs4_srv_t *nsrv4, rfs4_servinst_t *sip, 745 char *path, unsigned index) 746 { 747 size_t len; 748 rfs4_dss_path_t *dss_path; 749 750 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 751 752 /* 753 * Take a copy of the string, since the original may be overwritten. 754 * Sadly, no strdup() in the kernel. 755 */ 756 /* allow for NUL */ 757 len = strlen(path) + 1; 758 dss_path->path = kmem_alloc(len, KM_SLEEP); 759 (void) strlcpy(dss_path->path, path, len); 760 761 /* associate with servinst */ 762 dss_path->sip = sip; 763 dss_path->index = index; 764 765 /* 766 * Add to list of served paths. 767 * No locking required, as we're only ever called at startup. 768 */ 769 if (nsrv4->dss_pathlist == NULL) { 770 /* this is the first dss_path_t */ 771 772 /* needed for insque/remque */ 773 dss_path->next = dss_path->prev = dss_path; 774 775 nsrv4->dss_pathlist = dss_path; 776 } else { 777 insque(dss_path, nsrv4->dss_pathlist); 778 } 779 780 return (dss_path); 781 } 782 783 /* 784 * Create a new server instance, and make it the currently active instance. 785 * Note that starting the grace period too early will reduce the clients' 786 * recovery window. 787 */ 788 void 789 rfs4_servinst_create(nfs4_srv_t *nsrv4, int start_grace, 790 int dss_npaths, char **dss_paths) 791 { 792 unsigned i; 793 rfs4_servinst_t *sip; 794 rfs4_oldstate_t *oldstate; 795 796 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 797 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 798 799 sip->start_time = (time_t)0; 800 sip->grace_period = (time_t)0; 801 sip->next = NULL; 802 sip->prev = NULL; 803 804 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 805 /* 806 * This initial dummy entry is required to setup for insque/remque. 807 * It must be skipped over whenever the list is traversed. 808 */ 809 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 810 /* insque/remque require initial list entry to be self-terminated */ 811 oldstate->next = oldstate; 812 oldstate->prev = oldstate; 813 sip->oldstate = oldstate; 814 815 816 sip->dss_npaths = dss_npaths; 817 sip->dss_paths = kmem_alloc(dss_npaths * 818 sizeof (rfs4_dss_path_t *), KM_SLEEP); 819 820 for (i = 0; i < dss_npaths; i++) { 821 sip->dss_paths[i] = 822 rfs4_dss_newpath(nsrv4, sip, dss_paths[i], i); 823 } 824 825 mutex_enter(&nsrv4->servinst_lock); 826 if (nsrv4->nfs4_cur_servinst != NULL) { 827 /* add to linked list */ 828 sip->prev = nsrv4->nfs4_cur_servinst; 829 nsrv4->nfs4_cur_servinst->next = sip; 830 } 831 if (start_grace) 832 rfs4_grace_start(sip); 833 /* make the new instance "current" */ 834 nsrv4->nfs4_cur_servinst = sip; 835 836 mutex_exit(&nsrv4->servinst_lock); 837 } 838 839 /* 840 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 841 * all instances directly. 842 */ 843 void 844 rfs4_servinst_destroy_all(nfs4_srv_t *nsrv4) 845 { 846 rfs4_servinst_t *sip, *prev, *current; 847 #ifdef DEBUG 848 int n = 0; 849 #endif 850 851 mutex_enter(&nsrv4->servinst_lock); 852 ASSERT(nsrv4->nfs4_cur_servinst != NULL); 853 current = nsrv4->nfs4_cur_servinst; 854 nsrv4->nfs4_cur_servinst = NULL; 855 for (sip = current; sip != NULL; sip = prev) { 856 prev = sip->prev; 857 rw_destroy(&sip->rwlock); 858 if (sip->oldstate) 859 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 860 if (sip->dss_paths) { 861 int i = sip->dss_npaths; 862 863 while (i > 0) { 864 i--; 865 if (sip->dss_paths[i] != NULL) { 866 char *path = sip->dss_paths[i]->path; 867 868 if (path != NULL) { 869 kmem_free(path, 870 strlen(path) + 1); 871 } 872 kmem_free(sip->dss_paths[i], 873 sizeof (rfs4_dss_path_t)); 874 } 875 } 876 kmem_free(sip->dss_paths, 877 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 878 } 879 kmem_free(sip, sizeof (rfs4_servinst_t)); 880 #ifdef DEBUG 881 n++; 882 #endif 883 } 884 mutex_exit(&nsrv4->servinst_lock); 885 } 886 887 /* 888 * Assign the current server instance to a client_t. 889 * Should be called with cp->rc_dbe held. 890 */ 891 void 892 rfs4_servinst_assign(nfs4_srv_t *nsrv4, rfs4_client_t *cp, 893 rfs4_servinst_t *sip) 894 { 895 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 896 897 /* 898 * The lock ensures that if the current instance is in the process 899 * of changing, we will see the new one. 900 */ 901 mutex_enter(&nsrv4->servinst_lock); 902 cp->rc_server_instance = sip; 903 mutex_exit(&nsrv4->servinst_lock); 904 } 905 906 rfs4_servinst_t * 907 rfs4_servinst(rfs4_client_t *cp) 908 { 909 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 910 911 return (cp->rc_server_instance); 912 } 913 914 /* ARGSUSED */ 915 static void 916 nullfree(caddr_t resop) 917 { 918 } 919 920 /* 921 * This is a fall-through for invalid or not implemented (yet) ops 922 */ 923 /* ARGSUSED */ 924 static void 925 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 926 struct compound_state *cs) 927 { 928 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 929 } 930 931 /* 932 * Check if the security flavor, nfsnum, is in the flavor_list. 933 */ 934 bool_t 935 in_flavor_list(int nfsnum, int *flavor_list, int count) 936 { 937 int i; 938 939 for (i = 0; i < count; i++) { 940 if (nfsnum == flavor_list[i]) 941 return (TRUE); 942 } 943 return (FALSE); 944 } 945 946 /* 947 * Used by rfs4_op_secinfo to get the security information from the 948 * export structure associated with the component. 949 */ 950 /* ARGSUSED */ 951 static nfsstat4 952 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 953 { 954 int error, different_export = 0; 955 vnode_t *dvp, *vp; 956 struct exportinfo *exi; 957 fid_t fid; 958 uint_t count, i; 959 secinfo4 *resok_val; 960 struct secinfo *secp; 961 seconfig_t *si; 962 bool_t did_traverse = FALSE; 963 int dotdot, walk; 964 nfs_export_t *ne = nfs_get_export(); 965 966 dvp = cs->vp; 967 exi = cs->exi; 968 ASSERT(exi != NULL); 969 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 970 971 /* 972 * If dotdotting, then need to check whether it's above the 973 * root of a filesystem, or above an export point. 974 */ 975 if (dotdot) { 976 vnode_t *zone_rootvp = ne->exi_root->exi_vp; 977 978 ASSERT3U(exi->exi_zoneid, ==, ne->exi_root->exi_zoneid); 979 /* 980 * If dotdotting at the root of a filesystem, then 981 * need to traverse back to the mounted-on filesystem 982 * and do the dotdot lookup there. 983 */ 984 if ((dvp->v_flag & VROOT) || VN_CMP(dvp, zone_rootvp)) { 985 986 /* 987 * If at the system root, then can 988 * go up no further. 989 */ 990 if (VN_CMP(dvp, zone_rootvp)) 991 return (puterrno4(ENOENT)); 992 993 /* 994 * Traverse back to the mounted-on filesystem 995 */ 996 dvp = untraverse(dvp, zone_rootvp); 997 998 /* 999 * Set the different_export flag so we remember 1000 * to pick up a new exportinfo entry for 1001 * this new filesystem. 1002 */ 1003 different_export = 1; 1004 } else { 1005 1006 /* 1007 * If dotdotting above an export point then set 1008 * the different_export to get new export info. 1009 */ 1010 different_export = nfs_exported(exi, dvp); 1011 } 1012 } 1013 1014 /* 1015 * Get the vnode for the component "nm". 1016 */ 1017 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 1018 NULL, NULL, NULL); 1019 if (error) 1020 return (puterrno4(error)); 1021 1022 /* 1023 * If the vnode is in a pseudo filesystem, or if the security flavor 1024 * used in the request is valid but not an explicitly shared flavor, 1025 * or the access bit indicates that this is a limited access, 1026 * check whether this vnode is visible. 1027 */ 1028 if (!different_export && 1029 (PSEUDO(exi) || !is_exported_sec(cs->nfsflavor, exi) || 1030 cs->access & CS_ACCESS_LIMITED)) { 1031 if (! nfs_visible(exi, vp, &different_export)) { 1032 VN_RELE(vp); 1033 return (puterrno4(ENOENT)); 1034 } 1035 } 1036 1037 /* 1038 * If it's a mountpoint, then traverse it. 1039 */ 1040 if (vn_ismntpt(vp)) { 1041 if ((error = traverse(&vp)) != 0) { 1042 VN_RELE(vp); 1043 return (puterrno4(error)); 1044 } 1045 /* remember that we had to traverse mountpoint */ 1046 did_traverse = TRUE; 1047 different_export = 1; 1048 } else if (vp->v_vfsp != dvp->v_vfsp) { 1049 /* 1050 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 1051 * then vp is probably an LOFS object. We don't need the 1052 * realvp, we just need to know that we might have crossed 1053 * a server fs boundary and need to call checkexport4. 1054 * (LOFS lookup hides server fs mountpoints, and actually calls 1055 * traverse) 1056 */ 1057 different_export = 1; 1058 } 1059 1060 /* 1061 * Get the export information for it. 1062 */ 1063 if (different_export) { 1064 1065 bzero(&fid, sizeof (fid)); 1066 fid.fid_len = MAXFIDSZ; 1067 error = vop_fid_pseudo(vp, &fid); 1068 if (error) { 1069 VN_RELE(vp); 1070 return (puterrno4(error)); 1071 } 1072 1073 /* We'll need to reassign "exi". */ 1074 if (dotdot) 1075 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 1076 else 1077 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 1078 1079 if (exi == NULL) { 1080 if (did_traverse == TRUE) { 1081 /* 1082 * If this vnode is a mounted-on vnode, 1083 * but the mounted-on file system is not 1084 * exported, send back the secinfo for 1085 * the exported node that the mounted-on 1086 * vnode lives in. 1087 */ 1088 exi = cs->exi; 1089 } else { 1090 VN_RELE(vp); 1091 return (puterrno4(EACCES)); 1092 } 1093 } 1094 } 1095 ASSERT(exi != NULL); 1096 1097 1098 /* 1099 * Create the secinfo result based on the security information 1100 * from the exportinfo structure (exi). 1101 * 1102 * Return all flavors for a pseudo node. 1103 * For a real export node, return the flavor that the client 1104 * has access with. 1105 */ 1106 ASSERT(RW_LOCK_HELD(&ne->exported_lock)); 1107 if (PSEUDO(exi)) { 1108 count = exi->exi_export.ex_seccnt; /* total sec count */ 1109 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1110 secp = exi->exi_export.ex_secinfo; 1111 1112 for (i = 0; i < count; i++) { 1113 si = &secp[i].s_secinfo; 1114 resok_val[i].flavor = si->sc_rpcnum; 1115 if (resok_val[i].flavor == RPCSEC_GSS) { 1116 rpcsec_gss_info *info; 1117 1118 info = &resok_val[i].flavor_info; 1119 info->qop = si->sc_qop; 1120 info->service = (rpc_gss_svc_t)si->sc_service; 1121 1122 /* get oid opaque data */ 1123 info->oid.sec_oid4_len = 1124 si->sc_gss_mech_type->length; 1125 info->oid.sec_oid4_val = kmem_alloc( 1126 si->sc_gss_mech_type->length, KM_SLEEP); 1127 bcopy( 1128 si->sc_gss_mech_type->elements, 1129 info->oid.sec_oid4_val, 1130 info->oid.sec_oid4_len); 1131 } 1132 } 1133 resp->SECINFO4resok_len = count; 1134 resp->SECINFO4resok_val = resok_val; 1135 } else { 1136 int ret_cnt = 0, k = 0; 1137 int *flavor_list; 1138 1139 count = exi->exi_export.ex_seccnt; /* total sec count */ 1140 secp = exi->exi_export.ex_secinfo; 1141 1142 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1143 /* find out which flavors to return */ 1144 for (i = 0; i < count; i ++) { 1145 int access, flavor, perm; 1146 1147 flavor = secp[i].s_secinfo.sc_nfsnum; 1148 perm = secp[i].s_flags; 1149 1150 access = nfsauth4_secinfo_access(exi, cs->req, 1151 flavor, perm, cs->basecr); 1152 1153 if (! (access & NFSAUTH_DENIED) && 1154 ! (access & NFSAUTH_WRONGSEC)) { 1155 flavor_list[ret_cnt] = flavor; 1156 ret_cnt++; 1157 } 1158 } 1159 1160 /* Create the returning SECINFO value */ 1161 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1162 1163 for (i = 0; i < count; i++) { 1164 /* 1165 * If the flavor is in the flavor list, 1166 * fill in resok_val. 1167 */ 1168 si = &secp[i].s_secinfo; 1169 if (in_flavor_list(si->sc_nfsnum, 1170 flavor_list, ret_cnt)) { 1171 resok_val[k].flavor = si->sc_rpcnum; 1172 if (resok_val[k].flavor == RPCSEC_GSS) { 1173 rpcsec_gss_info *info; 1174 1175 info = &resok_val[k].flavor_info; 1176 info->qop = si->sc_qop; 1177 info->service = (rpc_gss_svc_t) 1178 si->sc_service; 1179 1180 /* get oid opaque data */ 1181 info->oid.sec_oid4_len = 1182 si->sc_gss_mech_type->length; 1183 info->oid.sec_oid4_val = kmem_alloc( 1184 si->sc_gss_mech_type->length, 1185 KM_SLEEP); 1186 bcopy(si->sc_gss_mech_type->elements, 1187 info->oid.sec_oid4_val, 1188 info->oid.sec_oid4_len); 1189 } 1190 k++; 1191 } 1192 if (k >= ret_cnt) 1193 break; 1194 } 1195 resp->SECINFO4resok_len = ret_cnt; 1196 resp->SECINFO4resok_val = resok_val; 1197 kmem_free(flavor_list, count * sizeof (int)); 1198 } 1199 1200 VN_RELE(vp); 1201 return (NFS4_OK); 1202 } 1203 1204 /* 1205 * SECINFO (Operation 33): Obtain required security information on 1206 * the component name in the format of (security-mechanism-oid, qop, service) 1207 * triplets. 1208 */ 1209 /* ARGSUSED */ 1210 static void 1211 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1212 struct compound_state *cs) 1213 { 1214 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1215 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1216 utf8string *utfnm = &args->name; 1217 uint_t len; 1218 char *nm; 1219 struct sockaddr *ca; 1220 char *name = NULL; 1221 nfsstat4 status = NFS4_OK; 1222 1223 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1224 SECINFO4args *, args); 1225 1226 /* 1227 * Current file handle (cfh) should have been set before getting 1228 * into this function. If not, return error. 1229 */ 1230 if (cs->vp == NULL) { 1231 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1232 goto out; 1233 } 1234 1235 if (cs->vp->v_type != VDIR) { 1236 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1237 goto out; 1238 } 1239 1240 /* 1241 * Verify the component name. If failed, error out, but 1242 * do not error out if the component name is a "..". 1243 * SECINFO will return its parents secinfo data for SECINFO "..". 1244 */ 1245 status = utf8_dir_verify(utfnm); 1246 if (status != NFS4_OK) { 1247 if (utfnm->utf8string_len != 2 || 1248 utfnm->utf8string_val[0] != '.' || 1249 utfnm->utf8string_val[1] != '.') { 1250 *cs->statusp = resp->status = status; 1251 goto out; 1252 } 1253 } 1254 1255 nm = utf8_to_str(utfnm, &len, NULL); 1256 if (nm == NULL) { 1257 *cs->statusp = resp->status = NFS4ERR_INVAL; 1258 goto out; 1259 } 1260 1261 if (len > MAXNAMELEN) { 1262 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1263 kmem_free(nm, len); 1264 goto out; 1265 } 1266 1267 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1268 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1269 MAXPATHLEN + 1); 1270 1271 if (name == NULL) { 1272 *cs->statusp = resp->status = NFS4ERR_INVAL; 1273 kmem_free(nm, len); 1274 goto out; 1275 } 1276 1277 1278 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1279 1280 if (name != nm) 1281 kmem_free(name, MAXPATHLEN + 1); 1282 kmem_free(nm, len); 1283 1284 out: 1285 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1286 SECINFO4res *, resp); 1287 } 1288 1289 /* 1290 * Free SECINFO result. 1291 */ 1292 /* ARGSUSED */ 1293 static void 1294 rfs4_op_secinfo_free(nfs_resop4 *resop) 1295 { 1296 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1297 int count, i; 1298 secinfo4 *resok_val; 1299 1300 /* If this is not an Ok result, nothing to free. */ 1301 if (resp->status != NFS4_OK) { 1302 return; 1303 } 1304 1305 count = resp->SECINFO4resok_len; 1306 resok_val = resp->SECINFO4resok_val; 1307 1308 for (i = 0; i < count; i++) { 1309 if (resok_val[i].flavor == RPCSEC_GSS) { 1310 rpcsec_gss_info *info; 1311 1312 info = &resok_val[i].flavor_info; 1313 kmem_free(info->oid.sec_oid4_val, 1314 info->oid.sec_oid4_len); 1315 } 1316 } 1317 kmem_free(resok_val, count * sizeof (secinfo4)); 1318 resp->SECINFO4resok_len = 0; 1319 resp->SECINFO4resok_val = NULL; 1320 } 1321 1322 /* ARGSUSED */ 1323 static void 1324 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1325 struct compound_state *cs) 1326 { 1327 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1328 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1329 int error; 1330 vnode_t *vp; 1331 struct vattr va; 1332 int checkwriteperm; 1333 cred_t *cr = cs->cr; 1334 bslabel_t *clabel, *slabel; 1335 ts_label_t *tslabel; 1336 boolean_t admin_low_client; 1337 1338 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1339 ACCESS4args *, args); 1340 1341 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1342 if (cs->access == CS_ACCESS_DENIED) { 1343 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1344 goto out; 1345 } 1346 #endif 1347 if (cs->vp == NULL) { 1348 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1349 goto out; 1350 } 1351 1352 ASSERT(cr != NULL); 1353 1354 vp = cs->vp; 1355 1356 /* 1357 * If the file system is exported read only, it is not appropriate 1358 * to check write permissions for regular files and directories. 1359 * Special files are interpreted by the client, so the underlying 1360 * permissions are sent back to the client for interpretation. 1361 */ 1362 if (rdonly4(req, cs) && 1363 (vp->v_type == VREG || vp->v_type == VDIR)) 1364 checkwriteperm = 0; 1365 else 1366 checkwriteperm = 1; 1367 1368 /* 1369 * XXX 1370 * We need the mode so that we can correctly determine access 1371 * permissions relative to a mandatory lock file. Access to 1372 * mandatory lock files is denied on the server, so it might 1373 * as well be reflected to the server during the open. 1374 */ 1375 va.va_mask = AT_MODE; 1376 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1377 if (error) { 1378 *cs->statusp = resp->status = puterrno4(error); 1379 goto out; 1380 } 1381 resp->access = 0; 1382 resp->supported = 0; 1383 1384 if (is_system_labeled()) { 1385 ASSERT(req->rq_label != NULL); 1386 clabel = req->rq_label; 1387 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1388 "got client label from request(1)", 1389 struct svc_req *, req); 1390 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1391 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1392 *cs->statusp = resp->status = puterrno4(EACCES); 1393 goto out; 1394 } 1395 slabel = label2bslabel(tslabel); 1396 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1397 char *, "got server label(1) for vp(2)", 1398 bslabel_t *, slabel, vnode_t *, vp); 1399 1400 admin_low_client = B_FALSE; 1401 } else 1402 admin_low_client = B_TRUE; 1403 } 1404 1405 if (args->access & ACCESS4_READ) { 1406 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1407 if (!error && !MANDLOCK(vp, va.va_mode) && 1408 (!is_system_labeled() || admin_low_client || 1409 bldominates(clabel, slabel))) 1410 resp->access |= ACCESS4_READ; 1411 resp->supported |= ACCESS4_READ; 1412 } 1413 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1414 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1415 if (!error && (!is_system_labeled() || admin_low_client || 1416 bldominates(clabel, slabel))) 1417 resp->access |= ACCESS4_LOOKUP; 1418 resp->supported |= ACCESS4_LOOKUP; 1419 } 1420 if (checkwriteperm && 1421 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1422 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1423 if (!error && !MANDLOCK(vp, va.va_mode) && 1424 (!is_system_labeled() || admin_low_client || 1425 blequal(clabel, slabel))) 1426 resp->access |= 1427 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1428 resp->supported |= 1429 resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND); 1430 } 1431 1432 if (checkwriteperm && 1433 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1434 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1435 if (!error && (!is_system_labeled() || admin_low_client || 1436 blequal(clabel, slabel))) 1437 resp->access |= ACCESS4_DELETE; 1438 resp->supported |= ACCESS4_DELETE; 1439 } 1440 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1441 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1442 if (!error && !MANDLOCK(vp, va.va_mode) && 1443 (!is_system_labeled() || admin_low_client || 1444 bldominates(clabel, slabel))) 1445 resp->access |= ACCESS4_EXECUTE; 1446 resp->supported |= ACCESS4_EXECUTE; 1447 } 1448 1449 if (is_system_labeled() && !admin_low_client) 1450 label_rele(tslabel); 1451 1452 *cs->statusp = resp->status = NFS4_OK; 1453 out: 1454 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1455 ACCESS4res *, resp); 1456 } 1457 1458 /* ARGSUSED */ 1459 static void 1460 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1461 struct compound_state *cs) 1462 { 1463 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1464 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1465 int error; 1466 vnode_t *vp = cs->vp; 1467 cred_t *cr = cs->cr; 1468 vattr_t va; 1469 nfs4_srv_t *nsrv4; 1470 1471 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1472 COMMIT4args *, args); 1473 1474 if (vp == NULL) { 1475 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1476 goto out; 1477 } 1478 if (cs->access == CS_ACCESS_DENIED) { 1479 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1480 goto out; 1481 } 1482 1483 if (args->offset + args->count < args->offset) { 1484 *cs->statusp = resp->status = NFS4ERR_INVAL; 1485 goto out; 1486 } 1487 1488 va.va_mask = AT_UID; 1489 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1490 1491 /* 1492 * If we can't get the attributes, then we can't do the 1493 * right access checking. So, we'll fail the request. 1494 */ 1495 if (error) { 1496 *cs->statusp = resp->status = puterrno4(error); 1497 goto out; 1498 } 1499 if (rdonly4(req, cs)) { 1500 *cs->statusp = resp->status = NFS4ERR_ROFS; 1501 goto out; 1502 } 1503 1504 if (vp->v_type != VREG) { 1505 if (vp->v_type == VDIR) 1506 resp->status = NFS4ERR_ISDIR; 1507 else 1508 resp->status = NFS4ERR_INVAL; 1509 *cs->statusp = resp->status; 1510 goto out; 1511 } 1512 1513 if (crgetuid(cr) != va.va_uid && 1514 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1515 *cs->statusp = resp->status = puterrno4(error); 1516 goto out; 1517 } 1518 1519 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1520 1521 if (error) { 1522 *cs->statusp = resp->status = puterrno4(error); 1523 goto out; 1524 } 1525 1526 nsrv4 = nfs4_get_srv(); 1527 *cs->statusp = resp->status = NFS4_OK; 1528 resp->writeverf = nsrv4->write4verf; 1529 out: 1530 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1531 COMMIT4res *, resp); 1532 } 1533 1534 /* 1535 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1536 * was completed. It does the nfsv4 create for special files. 1537 */ 1538 /* ARGSUSED */ 1539 static vnode_t * 1540 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1541 struct compound_state *cs, vattr_t *vap, char *nm) 1542 { 1543 int error; 1544 cred_t *cr = cs->cr; 1545 vnode_t *dvp = cs->vp; 1546 vnode_t *vp = NULL; 1547 int mode; 1548 enum vcexcl excl; 1549 1550 switch (args->type) { 1551 case NF4CHR: 1552 case NF4BLK: 1553 if (secpolicy_sys_devices(cr) != 0) { 1554 *cs->statusp = resp->status = NFS4ERR_PERM; 1555 return (NULL); 1556 } 1557 if (args->type == NF4CHR) 1558 vap->va_type = VCHR; 1559 else 1560 vap->va_type = VBLK; 1561 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1562 args->ftype4_u.devdata.specdata2); 1563 vap->va_mask |= AT_RDEV; 1564 break; 1565 case NF4SOCK: 1566 vap->va_type = VSOCK; 1567 break; 1568 case NF4FIFO: 1569 vap->va_type = VFIFO; 1570 break; 1571 default: 1572 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1573 return (NULL); 1574 } 1575 1576 /* 1577 * Must specify the mode. 1578 */ 1579 if (!(vap->va_mask & AT_MODE)) { 1580 *cs->statusp = resp->status = NFS4ERR_INVAL; 1581 return (NULL); 1582 } 1583 1584 excl = EXCL; 1585 1586 mode = 0; 1587 1588 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1589 if (error) { 1590 *cs->statusp = resp->status = puterrno4(error); 1591 return (NULL); 1592 } 1593 return (vp); 1594 } 1595 1596 /* 1597 * nfsv4 create is used to create non-regular files. For regular files, 1598 * use nfsv4 open. 1599 */ 1600 /* ARGSUSED */ 1601 static void 1602 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1603 struct compound_state *cs) 1604 { 1605 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1606 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1607 int error; 1608 struct vattr bva, iva, iva2, ava, *vap; 1609 cred_t *cr = cs->cr; 1610 vnode_t *dvp = cs->vp; 1611 vnode_t *vp = NULL; 1612 vnode_t *realvp; 1613 char *nm, *lnm; 1614 uint_t len, llen; 1615 int syncval = 0; 1616 struct nfs4_svgetit_arg sarg; 1617 struct nfs4_ntov_table ntov; 1618 struct statvfs64 sb; 1619 nfsstat4 status; 1620 struct sockaddr *ca; 1621 char *name = NULL; 1622 char *lname = NULL; 1623 1624 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1625 CREATE4args *, args); 1626 1627 resp->attrset = 0; 1628 1629 if (dvp == NULL) { 1630 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1631 goto out; 1632 } 1633 1634 /* 1635 * If there is an unshared filesystem mounted on this vnode, 1636 * do not allow to create an object in this directory. 1637 */ 1638 if (vn_ismntpt(dvp)) { 1639 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1640 goto out; 1641 } 1642 1643 /* Verify that type is correct */ 1644 switch (args->type) { 1645 case NF4LNK: 1646 case NF4BLK: 1647 case NF4CHR: 1648 case NF4SOCK: 1649 case NF4FIFO: 1650 case NF4DIR: 1651 break; 1652 default: 1653 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1654 goto out; 1655 }; 1656 1657 if (cs->access == CS_ACCESS_DENIED) { 1658 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1659 goto out; 1660 } 1661 if (dvp->v_type != VDIR) { 1662 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1663 goto out; 1664 } 1665 status = utf8_dir_verify(&args->objname); 1666 if (status != NFS4_OK) { 1667 *cs->statusp = resp->status = status; 1668 goto out; 1669 } 1670 1671 if (rdonly4(req, cs)) { 1672 *cs->statusp = resp->status = NFS4ERR_ROFS; 1673 goto out; 1674 } 1675 1676 /* 1677 * Name of newly created object 1678 */ 1679 nm = utf8_to_fn(&args->objname, &len, NULL); 1680 if (nm == NULL) { 1681 *cs->statusp = resp->status = NFS4ERR_INVAL; 1682 goto out; 1683 } 1684 1685 if (len > MAXNAMELEN) { 1686 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1687 kmem_free(nm, len); 1688 goto out; 1689 } 1690 1691 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1692 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1693 MAXPATHLEN + 1); 1694 1695 if (name == NULL) { 1696 *cs->statusp = resp->status = NFS4ERR_INVAL; 1697 kmem_free(nm, len); 1698 goto out; 1699 } 1700 1701 resp->attrset = 0; 1702 1703 sarg.sbp = &sb; 1704 sarg.is_referral = B_FALSE; 1705 nfs4_ntov_table_init(&ntov); 1706 1707 status = do_rfs4_set_attrs(&resp->attrset, 1708 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1709 1710 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1711 status = NFS4ERR_INVAL; 1712 1713 if (status != NFS4_OK) { 1714 *cs->statusp = resp->status = status; 1715 if (name != nm) 1716 kmem_free(name, MAXPATHLEN + 1); 1717 kmem_free(nm, len); 1718 nfs4_ntov_table_free(&ntov, &sarg); 1719 resp->attrset = 0; 1720 goto out; 1721 } 1722 1723 /* Get "before" change value */ 1724 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1725 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1726 if (error) { 1727 *cs->statusp = resp->status = puterrno4(error); 1728 if (name != nm) 1729 kmem_free(name, MAXPATHLEN + 1); 1730 kmem_free(nm, len); 1731 nfs4_ntov_table_free(&ntov, &sarg); 1732 resp->attrset = 0; 1733 goto out; 1734 } 1735 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1736 1737 vap = sarg.vap; 1738 1739 /* 1740 * Set the default initial values for attributes when the parent 1741 * directory does not have the VSUID/VSGID bit set and they have 1742 * not been specified in createattrs. 1743 */ 1744 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1745 vap->va_uid = crgetuid(cr); 1746 vap->va_mask |= AT_UID; 1747 } 1748 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1749 vap->va_gid = crgetgid(cr); 1750 vap->va_mask |= AT_GID; 1751 } 1752 1753 vap->va_mask |= AT_TYPE; 1754 switch (args->type) { 1755 case NF4DIR: 1756 vap->va_type = VDIR; 1757 if ((vap->va_mask & AT_MODE) == 0) { 1758 vap->va_mode = 0700; /* default: owner rwx only */ 1759 vap->va_mask |= AT_MODE; 1760 } 1761 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1762 if (error) 1763 break; 1764 1765 /* 1766 * Get the initial "after" sequence number, if it fails, 1767 * set to zero 1768 */ 1769 iva.va_mask = AT_SEQ; 1770 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1771 iva.va_seq = 0; 1772 break; 1773 case NF4LNK: 1774 vap->va_type = VLNK; 1775 if ((vap->va_mask & AT_MODE) == 0) { 1776 vap->va_mode = 0700; /* default: owner rwx only */ 1777 vap->va_mask |= AT_MODE; 1778 } 1779 1780 /* 1781 * symlink names must be treated as data 1782 */ 1783 lnm = utf8_to_str((utf8string *)&args->ftype4_u.linkdata, 1784 &llen, NULL); 1785 1786 if (lnm == NULL) { 1787 *cs->statusp = resp->status = NFS4ERR_INVAL; 1788 if (name != nm) 1789 kmem_free(name, MAXPATHLEN + 1); 1790 kmem_free(nm, len); 1791 nfs4_ntov_table_free(&ntov, &sarg); 1792 resp->attrset = 0; 1793 goto out; 1794 } 1795 1796 if (llen > MAXPATHLEN) { 1797 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1798 if (name != nm) 1799 kmem_free(name, MAXPATHLEN + 1); 1800 kmem_free(nm, len); 1801 kmem_free(lnm, llen); 1802 nfs4_ntov_table_free(&ntov, &sarg); 1803 resp->attrset = 0; 1804 goto out; 1805 } 1806 1807 lname = nfscmd_convname(ca, cs->exi, lnm, 1808 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1809 1810 if (lname == NULL) { 1811 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1812 if (name != nm) 1813 kmem_free(name, MAXPATHLEN + 1); 1814 kmem_free(nm, len); 1815 kmem_free(lnm, llen); 1816 nfs4_ntov_table_free(&ntov, &sarg); 1817 resp->attrset = 0; 1818 goto out; 1819 } 1820 1821 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1822 if (lname != lnm) 1823 kmem_free(lname, MAXPATHLEN + 1); 1824 kmem_free(lnm, llen); 1825 if (error) 1826 break; 1827 1828 /* 1829 * Get the initial "after" sequence number, if it fails, 1830 * set to zero 1831 */ 1832 iva.va_mask = AT_SEQ; 1833 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1834 iva.va_seq = 0; 1835 1836 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, 1837 NULL, NULL, NULL); 1838 if (error) 1839 break; 1840 1841 /* 1842 * va_seq is not safe over VOP calls, check it again 1843 * if it has changed zero out iva to force atomic = FALSE. 1844 */ 1845 iva2.va_mask = AT_SEQ; 1846 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1847 iva2.va_seq != iva.va_seq) 1848 iva.va_seq = 0; 1849 break; 1850 default: 1851 /* 1852 * probably a special file. 1853 */ 1854 if ((vap->va_mask & AT_MODE) == 0) { 1855 vap->va_mode = 0600; /* default: owner rw only */ 1856 vap->va_mask |= AT_MODE; 1857 } 1858 syncval = FNODSYNC; 1859 /* 1860 * We know this will only generate one VOP call 1861 */ 1862 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); 1863 1864 if (vp == NULL) { 1865 if (name != nm) 1866 kmem_free(name, MAXPATHLEN + 1); 1867 kmem_free(nm, len); 1868 nfs4_ntov_table_free(&ntov, &sarg); 1869 resp->attrset = 0; 1870 goto out; 1871 } 1872 1873 /* 1874 * Get the initial "after" sequence number, if it fails, 1875 * set to zero 1876 */ 1877 iva.va_mask = AT_SEQ; 1878 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1879 iva.va_seq = 0; 1880 1881 break; 1882 } 1883 if (name != nm) 1884 kmem_free(name, MAXPATHLEN + 1); 1885 kmem_free(nm, len); 1886 1887 if (error) { 1888 *cs->statusp = resp->status = puterrno4(error); 1889 } 1890 1891 /* 1892 * Force modified data and metadata out to stable storage. 1893 */ 1894 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1895 1896 if (resp->status != NFS4_OK) { 1897 if (vp != NULL) 1898 VN_RELE(vp); 1899 nfs4_ntov_table_free(&ntov, &sarg); 1900 resp->attrset = 0; 1901 goto out; 1902 } 1903 1904 /* 1905 * Finish setup of cinfo response, "before" value already set. 1906 * Get "after" change value, if it fails, simply return the 1907 * before value. 1908 */ 1909 ava.va_mask = AT_CTIME|AT_SEQ; 1910 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1911 ava.va_ctime = bva.va_ctime; 1912 ava.va_seq = 0; 1913 } 1914 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1915 1916 /* 1917 * True verification that object was created with correct 1918 * attrs is impossible. The attrs could have been changed 1919 * immediately after object creation. If attributes did 1920 * not verify, the only recourse for the server is to 1921 * destroy the object. Maybe if some attrs (like gid) 1922 * are set incorrectly, the object should be destroyed; 1923 * however, seems bad as a default policy. Do we really 1924 * want to destroy an object over one of the times not 1925 * verifying correctly? For these reasons, the server 1926 * currently sets bits in attrset for createattrs 1927 * that were set; however, no verification is done. 1928 * 1929 * vmask_to_nmask accounts for vattr bits set on create 1930 * [do_rfs4_set_attrs() only sets resp bits for 1931 * non-vattr/vfs bits.] 1932 * Mask off any bits set by default so as not to return 1933 * more attrset bits than were requested in createattrs 1934 */ 1935 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1936 resp->attrset &= args->createattrs.attrmask; 1937 nfs4_ntov_table_free(&ntov, &sarg); 1938 1939 error = makefh4(&cs->fh, vp, cs->exi); 1940 if (error) { 1941 *cs->statusp = resp->status = puterrno4(error); 1942 } 1943 1944 /* 1945 * The cinfo.atomic = TRUE only if we got no errors, we have 1946 * non-zero va_seq's, and it has incremented by exactly one 1947 * during the creation and it didn't change during the VOP_LOOKUP 1948 * or VOP_FSYNC. 1949 */ 1950 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1951 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1952 resp->cinfo.atomic = TRUE; 1953 else 1954 resp->cinfo.atomic = FALSE; 1955 1956 /* 1957 * Force modified metadata out to stable storage. 1958 * 1959 * if a underlying vp exists, pass it to VOP_FSYNC 1960 */ 1961 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1962 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1963 else 1964 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1965 1966 if (resp->status != NFS4_OK) { 1967 VN_RELE(vp); 1968 goto out; 1969 } 1970 if (cs->vp) 1971 VN_RELE(cs->vp); 1972 1973 cs->vp = vp; 1974 *cs->statusp = resp->status = NFS4_OK; 1975 out: 1976 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1977 CREATE4res *, resp); 1978 } 1979 1980 /*ARGSUSED*/ 1981 static void 1982 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1983 struct compound_state *cs) 1984 { 1985 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1986 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1987 1988 rfs4_op_inval(argop, resop, req, cs); 1989 1990 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1991 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1992 } 1993 1994 /*ARGSUSED*/ 1995 static void 1996 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1997 struct compound_state *cs) 1998 { 1999 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 2000 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 2001 rfs4_deleg_state_t *dsp; 2002 nfsstat4 status; 2003 2004 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 2005 DELEGRETURN4args *, args); 2006 2007 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 2008 resp->status = *cs->statusp = status; 2009 if (status != NFS4_OK) 2010 goto out; 2011 2012 /* Ensure specified filehandle matches */ 2013 if (cs->vp != dsp->rds_finfo->rf_vp) { 2014 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 2015 } else 2016 rfs4_return_deleg(dsp, FALSE); 2017 2018 rfs4_update_lease(dsp->rds_client); 2019 2020 rfs4_deleg_state_rele(dsp); 2021 out: 2022 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 2023 DELEGRETURN4res *, resp); 2024 } 2025 2026 /* 2027 * Check to see if a given "flavor" is an explicitly shared flavor. 2028 * The assumption of this routine is the "flavor" is already a valid 2029 * flavor in the secinfo list of "exi". 2030 * 2031 * e.g. 2032 * # share -o sec=flavor1 /export 2033 * # share -o sec=flavor2 /export/home 2034 * 2035 * flavor2 is not an explicitly shared flavor for /export, 2036 * however it is in the secinfo list for /export thru the 2037 * server namespace setup. 2038 */ 2039 int 2040 is_exported_sec(int flavor, struct exportinfo *exi) 2041 { 2042 int i; 2043 struct secinfo *sp; 2044 2045 sp = exi->exi_export.ex_secinfo; 2046 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 2047 if (flavor == sp[i].s_secinfo.sc_nfsnum || 2048 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 2049 return (SEC_REF_EXPORTED(&sp[i])); 2050 } 2051 } 2052 2053 /* Should not reach this point based on the assumption */ 2054 return (0); 2055 } 2056 2057 /* 2058 * Check if the security flavor used in the request matches what is 2059 * required at the export point or at the root pseudo node (exi_root). 2060 * 2061 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 2062 * 2063 */ 2064 static int 2065 secinfo_match_or_authnone(struct compound_state *cs) 2066 { 2067 int i; 2068 struct secinfo *sp; 2069 2070 /* 2071 * Check cs->nfsflavor (from the request) against 2072 * the current export data in cs->exi. 2073 */ 2074 sp = cs->exi->exi_export.ex_secinfo; 2075 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 2076 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 2077 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 2078 return (1); 2079 } 2080 2081 return (0); 2082 } 2083 2084 /* 2085 * Check the access authority for the client and return the correct error. 2086 */ 2087 nfsstat4 2088 call_checkauth4(struct compound_state *cs, struct svc_req *req) 2089 { 2090 int authres; 2091 2092 /* 2093 * First, check if the security flavor used in the request 2094 * are among the flavors set in the server namespace. 2095 */ 2096 if (!secinfo_match_or_authnone(cs)) { 2097 *cs->statusp = NFS4ERR_WRONGSEC; 2098 return (*cs->statusp); 2099 } 2100 2101 authres = checkauth4(cs, req); 2102 2103 if (authres > 0) { 2104 *cs->statusp = NFS4_OK; 2105 if (! (cs->access & CS_ACCESS_LIMITED)) 2106 cs->access = CS_ACCESS_OK; 2107 } else if (authres == 0) { 2108 *cs->statusp = NFS4ERR_ACCESS; 2109 } else if (authres == -2) { 2110 *cs->statusp = NFS4ERR_WRONGSEC; 2111 } else { 2112 *cs->statusp = NFS4ERR_DELAY; 2113 } 2114 return (*cs->statusp); 2115 } 2116 2117 /* 2118 * bitmap4_to_attrmask is called by getattr and readdir. 2119 * It sets up the vattr mask and determines whether vfsstat call is needed 2120 * based on the input bitmap. 2121 * Returns nfsv4 status. 2122 */ 2123 static nfsstat4 2124 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2125 { 2126 int i; 2127 uint_t va_mask; 2128 struct statvfs64 *sbp = sargp->sbp; 2129 2130 sargp->sbp = NULL; 2131 sargp->flag = 0; 2132 sargp->rdattr_error = NFS4_OK; 2133 sargp->mntdfid_set = FALSE; 2134 if (sargp->cs->vp) 2135 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2136 FH4_ATTRDIR | FH4_NAMEDATTR); 2137 else 2138 sargp->xattr = 0; 2139 2140 /* 2141 * Set rdattr_error_req to true if return error per 2142 * failed entry rather than fail the readdir. 2143 */ 2144 if (breq & FATTR4_RDATTR_ERROR_MASK) 2145 sargp->rdattr_error_req = 1; 2146 else 2147 sargp->rdattr_error_req = 0; 2148 2149 /* 2150 * generate the va_mask 2151 * Handle the easy cases first 2152 */ 2153 switch (breq) { 2154 case NFS4_NTOV_ATTR_MASK: 2155 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2156 return (NFS4_OK); 2157 2158 case NFS4_FS_ATTR_MASK: 2159 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2160 sargp->sbp = sbp; 2161 return (NFS4_OK); 2162 2163 case NFS4_NTOV_ATTR_CACHE_MASK: 2164 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2165 return (NFS4_OK); 2166 2167 case FATTR4_LEASE_TIME_MASK: 2168 sargp->vap->va_mask = 0; 2169 return (NFS4_OK); 2170 2171 default: 2172 va_mask = 0; 2173 for (i = 0; i < nfs4_ntov_map_size; i++) { 2174 if ((breq & nfs4_ntov_map[i].fbit) && 2175 nfs4_ntov_map[i].vbit) 2176 va_mask |= nfs4_ntov_map[i].vbit; 2177 } 2178 2179 /* 2180 * Check is vfsstat is needed 2181 */ 2182 if (breq & NFS4_FS_ATTR_MASK) 2183 sargp->sbp = sbp; 2184 2185 sargp->vap->va_mask = va_mask; 2186 return (NFS4_OK); 2187 } 2188 /* NOTREACHED */ 2189 } 2190 2191 /* 2192 * bitmap4_get_sysattrs is called by getattr and readdir. 2193 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2194 * Returns nfsv4 status. 2195 */ 2196 static nfsstat4 2197 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2198 { 2199 int error; 2200 struct compound_state *cs = sargp->cs; 2201 vnode_t *vp = cs->vp; 2202 2203 if (sargp->sbp != NULL) { 2204 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2205 sargp->sbp = NULL; /* to identify error */ 2206 return (puterrno4(error)); 2207 } 2208 } 2209 2210 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2211 } 2212 2213 static void 2214 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2215 { 2216 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2217 KM_SLEEP); 2218 ntovp->attrcnt = 0; 2219 ntovp->vfsstat = FALSE; 2220 } 2221 2222 static void 2223 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2224 struct nfs4_svgetit_arg *sargp) 2225 { 2226 int i; 2227 union nfs4_attr_u *na; 2228 uint8_t *amap; 2229 2230 /* 2231 * XXX Should do the same checks for whether the bit is set 2232 */ 2233 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2234 i < ntovp->attrcnt; i++, na++, amap++) { 2235 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2236 NFS4ATTR_FREEIT, sargp, na); 2237 } 2238 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2239 /* 2240 * xdr_free for getattr will be done later 2241 */ 2242 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2243 i < ntovp->attrcnt; i++, na++, amap++) { 2244 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2245 } 2246 } 2247 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2248 } 2249 2250 /* 2251 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2252 */ 2253 static nfsstat4 2254 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2255 struct nfs4_svgetit_arg *sargp) 2256 { 2257 int error = 0; 2258 int i, k; 2259 struct nfs4_ntov_table ntov; 2260 XDR xdr; 2261 ulong_t xdr_size; 2262 char *xdr_attrs; 2263 nfsstat4 status = NFS4_OK; 2264 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2265 union nfs4_attr_u *na; 2266 uint8_t *amap; 2267 2268 sargp->op = NFS4ATTR_GETIT; 2269 sargp->flag = 0; 2270 2271 fattrp->attrmask = 0; 2272 /* if no bits requested, then return empty fattr4 */ 2273 if (breq == 0) { 2274 fattrp->attrlist4_len = 0; 2275 fattrp->attrlist4 = NULL; 2276 return (NFS4_OK); 2277 } 2278 2279 /* 2280 * return NFS4ERR_INVAL when client requests write-only attrs 2281 */ 2282 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2283 return (NFS4ERR_INVAL); 2284 2285 nfs4_ntov_table_init(&ntov); 2286 na = ntov.na; 2287 amap = ntov.amap; 2288 2289 /* 2290 * Now loop to get or verify the attrs 2291 */ 2292 for (i = 0; i < nfs4_ntov_map_size; i++) { 2293 if (breq & nfs4_ntov_map[i].fbit) { 2294 if ((*nfs4_ntov_map[i].sv_getit)( 2295 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2296 2297 error = (*nfs4_ntov_map[i].sv_getit)( 2298 NFS4ATTR_GETIT, sargp, na); 2299 2300 /* 2301 * Possible error values: 2302 * >0 if sv_getit failed to 2303 * get the attr; 0 if succeeded; 2304 * <0 if rdattr_error and the 2305 * attribute cannot be returned. 2306 */ 2307 if (error && !(sargp->rdattr_error_req)) 2308 goto done; 2309 /* 2310 * If error then just for entry 2311 */ 2312 if (error == 0) { 2313 fattrp->attrmask |= 2314 nfs4_ntov_map[i].fbit; 2315 *amap++ = 2316 (uint8_t)nfs4_ntov_map[i].nval; 2317 na++; 2318 (ntov.attrcnt)++; 2319 } else if ((error > 0) && 2320 (sargp->rdattr_error == NFS4_OK)) { 2321 sargp->rdattr_error = puterrno4(error); 2322 } 2323 error = 0; 2324 } 2325 } 2326 } 2327 2328 /* 2329 * If rdattr_error was set after the return value for it was assigned, 2330 * update it. 2331 */ 2332 if (prev_rdattr_error != sargp->rdattr_error) { 2333 na = ntov.na; 2334 amap = ntov.amap; 2335 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2336 k = *amap; 2337 if (k < FATTR4_RDATTR_ERROR) { 2338 continue; 2339 } 2340 if ((k == FATTR4_RDATTR_ERROR) && 2341 ((*nfs4_ntov_map[k].sv_getit)( 2342 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2343 2344 (void) (*nfs4_ntov_map[k].sv_getit)( 2345 NFS4ATTR_GETIT, sargp, na); 2346 } 2347 break; 2348 } 2349 } 2350 2351 xdr_size = 0; 2352 na = ntov.na; 2353 amap = ntov.amap; 2354 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2355 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2356 } 2357 2358 fattrp->attrlist4_len = xdr_size; 2359 if (xdr_size) { 2360 /* freed by rfs4_op_getattr_free() */ 2361 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2362 2363 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2364 2365 na = ntov.na; 2366 amap = ntov.amap; 2367 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2368 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2369 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2370 int, *amap); 2371 status = NFS4ERR_SERVERFAULT; 2372 break; 2373 } 2374 } 2375 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2376 } else { 2377 fattrp->attrlist4 = NULL; 2378 } 2379 done: 2380 2381 nfs4_ntov_table_free(&ntov, sargp); 2382 2383 if (error != 0) 2384 status = puterrno4(error); 2385 2386 return (status); 2387 } 2388 2389 /* ARGSUSED */ 2390 static void 2391 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2392 struct compound_state *cs) 2393 { 2394 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2395 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2396 struct nfs4_svgetit_arg sarg; 2397 struct statvfs64 sb; 2398 nfsstat4 status; 2399 2400 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2401 GETATTR4args *, args); 2402 2403 if (cs->vp == NULL) { 2404 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2405 goto out; 2406 } 2407 2408 if (cs->access == CS_ACCESS_DENIED) { 2409 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2410 goto out; 2411 } 2412 2413 sarg.sbp = &sb; 2414 sarg.cs = cs; 2415 sarg.is_referral = B_FALSE; 2416 2417 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2418 if (status == NFS4_OK) { 2419 2420 status = bitmap4_get_sysattrs(&sarg); 2421 if (status == NFS4_OK) { 2422 2423 /* Is this a referral? */ 2424 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2425 /* Older V4 Solaris client sees a link */ 2426 if (client_is_downrev(req)) 2427 sarg.vap->va_type = VLNK; 2428 else 2429 sarg.is_referral = B_TRUE; 2430 } 2431 2432 status = do_rfs4_op_getattr(args->attr_request, 2433 &resp->obj_attributes, &sarg); 2434 } 2435 } 2436 *cs->statusp = resp->status = status; 2437 out: 2438 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2439 GETATTR4res *, resp); 2440 } 2441 2442 static void 2443 rfs4_op_getattr_free(nfs_resop4 *resop) 2444 { 2445 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2446 2447 nfs4_fattr4_free(&resp->obj_attributes); 2448 } 2449 2450 /* ARGSUSED */ 2451 static void 2452 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2453 struct compound_state *cs) 2454 { 2455 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2456 2457 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2458 2459 if (cs->vp == NULL) { 2460 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2461 goto out; 2462 } 2463 if (cs->access == CS_ACCESS_DENIED) { 2464 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2465 goto out; 2466 } 2467 2468 /* check for reparse point at the share point */ 2469 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2470 /* it's all bad */ 2471 cs->exi->exi_moved = 1; 2472 *cs->statusp = resp->status = NFS4ERR_MOVED; 2473 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2474 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2475 return; 2476 } 2477 2478 /* check for reparse point at vp */ 2479 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2480 /* it's not all bad */ 2481 *cs->statusp = resp->status = NFS4ERR_MOVED; 2482 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2483 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2484 return; 2485 } 2486 2487 resp->object.nfs_fh4_val = 2488 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2489 nfs_fh4_copy(&cs->fh, &resp->object); 2490 *cs->statusp = resp->status = NFS4_OK; 2491 out: 2492 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2493 GETFH4res *, resp); 2494 } 2495 2496 static void 2497 rfs4_op_getfh_free(nfs_resop4 *resop) 2498 { 2499 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2500 2501 if (resp->status == NFS4_OK && 2502 resp->object.nfs_fh4_val != NULL) { 2503 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2504 resp->object.nfs_fh4_val = NULL; 2505 resp->object.nfs_fh4_len = 0; 2506 } 2507 } 2508 2509 /* 2510 * illegal: args: void 2511 * res : status (NFS4ERR_OP_ILLEGAL) 2512 */ 2513 /* ARGSUSED */ 2514 static void 2515 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2516 struct svc_req *req, struct compound_state *cs) 2517 { 2518 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2519 2520 resop->resop = OP_ILLEGAL; 2521 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2522 } 2523 2524 /* 2525 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2526 * res: status. If success - CURRENT_FH unchanged, return change_info 2527 */ 2528 /* ARGSUSED */ 2529 static void 2530 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2531 struct compound_state *cs) 2532 { 2533 LINK4args *args = &argop->nfs_argop4_u.oplink; 2534 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2535 int error; 2536 vnode_t *vp; 2537 vnode_t *dvp; 2538 struct vattr bdva, idva, adva; 2539 char *nm; 2540 uint_t len; 2541 struct sockaddr *ca; 2542 char *name = NULL; 2543 nfsstat4 status; 2544 2545 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2546 LINK4args *, args); 2547 2548 /* SAVED_FH: source object */ 2549 vp = cs->saved_vp; 2550 if (vp == NULL) { 2551 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2552 goto out; 2553 } 2554 2555 /* CURRENT_FH: target directory */ 2556 dvp = cs->vp; 2557 if (dvp == NULL) { 2558 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2559 goto out; 2560 } 2561 2562 /* 2563 * If there is a non-shared filesystem mounted on this vnode, 2564 * do not allow to link any file in this directory. 2565 */ 2566 if (vn_ismntpt(dvp)) { 2567 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2568 goto out; 2569 } 2570 2571 if (cs->access == CS_ACCESS_DENIED) { 2572 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2573 goto out; 2574 } 2575 2576 /* Check source object's type validity */ 2577 if (vp->v_type == VDIR) { 2578 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2579 goto out; 2580 } 2581 2582 /* Check target directory's type */ 2583 if (dvp->v_type != VDIR) { 2584 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2585 goto out; 2586 } 2587 2588 if (cs->saved_exi != cs->exi) { 2589 *cs->statusp = resp->status = NFS4ERR_XDEV; 2590 goto out; 2591 } 2592 2593 status = utf8_dir_verify(&args->newname); 2594 if (status != NFS4_OK) { 2595 *cs->statusp = resp->status = status; 2596 goto out; 2597 } 2598 2599 nm = utf8_to_fn(&args->newname, &len, NULL); 2600 if (nm == NULL) { 2601 *cs->statusp = resp->status = NFS4ERR_INVAL; 2602 goto out; 2603 } 2604 2605 if (len > MAXNAMELEN) { 2606 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2607 kmem_free(nm, len); 2608 goto out; 2609 } 2610 2611 if (rdonly4(req, cs)) { 2612 *cs->statusp = resp->status = NFS4ERR_ROFS; 2613 kmem_free(nm, len); 2614 goto out; 2615 } 2616 2617 /* Get "before" change value */ 2618 bdva.va_mask = AT_CTIME|AT_SEQ; 2619 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2620 if (error) { 2621 *cs->statusp = resp->status = puterrno4(error); 2622 kmem_free(nm, len); 2623 goto out; 2624 } 2625 2626 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2627 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2628 MAXPATHLEN + 1); 2629 2630 if (name == NULL) { 2631 *cs->statusp = resp->status = NFS4ERR_INVAL; 2632 kmem_free(nm, len); 2633 goto out; 2634 } 2635 2636 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2637 2638 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2639 2640 if (nm != name) 2641 kmem_free(name, MAXPATHLEN + 1); 2642 kmem_free(nm, len); 2643 2644 /* 2645 * Get the initial "after" sequence number, if it fails, set to zero 2646 */ 2647 idva.va_mask = AT_SEQ; 2648 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2649 idva.va_seq = 0; 2650 2651 /* 2652 * Force modified data and metadata out to stable storage. 2653 */ 2654 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2655 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2656 2657 if (error) { 2658 *cs->statusp = resp->status = puterrno4(error); 2659 goto out; 2660 } 2661 2662 /* 2663 * Get "after" change value, if it fails, simply return the 2664 * before value. 2665 */ 2666 adva.va_mask = AT_CTIME|AT_SEQ; 2667 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2668 adva.va_ctime = bdva.va_ctime; 2669 adva.va_seq = 0; 2670 } 2671 2672 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2673 2674 /* 2675 * The cinfo.atomic = TRUE only if we have 2676 * non-zero va_seq's, and it has incremented by exactly one 2677 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2678 */ 2679 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2680 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2681 resp->cinfo.atomic = TRUE; 2682 else 2683 resp->cinfo.atomic = FALSE; 2684 2685 *cs->statusp = resp->status = NFS4_OK; 2686 out: 2687 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2688 LINK4res *, resp); 2689 } 2690 2691 /* 2692 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2693 */ 2694 2695 /* ARGSUSED */ 2696 static nfsstat4 2697 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) 2698 { 2699 int error; 2700 int different_export = 0; 2701 vnode_t *vp, *pre_tvp = NULL, *oldvp = NULL; 2702 struct exportinfo *exi = NULL, *pre_exi = NULL; 2703 nfsstat4 stat; 2704 fid_t fid; 2705 int attrdir, dotdot, walk; 2706 bool_t is_newvp = FALSE; 2707 2708 if (cs->vp->v_flag & V_XATTRDIR) { 2709 attrdir = 1; 2710 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2711 } else { 2712 attrdir = 0; 2713 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2714 } 2715 2716 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2717 2718 /* 2719 * If dotdotting, then need to check whether it's 2720 * above the root of a filesystem, or above an 2721 * export point. 2722 */ 2723 if (dotdot) { 2724 vnode_t *zone_rootvp; 2725 2726 ASSERT(cs->exi != NULL); 2727 zone_rootvp = cs->exi->exi_ne->exi_root->exi_vp; 2728 /* 2729 * If dotdotting at the root of a filesystem, then 2730 * need to traverse back to the mounted-on filesystem 2731 * and do the dotdot lookup there. 2732 */ 2733 if ((cs->vp->v_flag & VROOT) || VN_CMP(cs->vp, zone_rootvp)) { 2734 2735 /* 2736 * If at the system root, then can 2737 * go up no further. 2738 */ 2739 if (VN_CMP(cs->vp, zone_rootvp)) 2740 return (puterrno4(ENOENT)); 2741 2742 /* 2743 * Traverse back to the mounted-on filesystem 2744 */ 2745 cs->vp = untraverse(cs->vp, zone_rootvp); 2746 2747 /* 2748 * Set the different_export flag so we remember 2749 * to pick up a new exportinfo entry for 2750 * this new filesystem. 2751 */ 2752 different_export = 1; 2753 } else { 2754 2755 /* 2756 * If dotdotting above an export point then set 2757 * the different_export to get new export info. 2758 */ 2759 different_export = nfs_exported(cs->exi, cs->vp); 2760 } 2761 } 2762 2763 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2764 NULL, NULL, NULL); 2765 if (error) 2766 return (puterrno4(error)); 2767 2768 /* 2769 * If the vnode is in a pseudo filesystem, check whether it is visible. 2770 * 2771 * XXX if the vnode is a symlink and it is not visible in 2772 * a pseudo filesystem, return ENOENT (not following symlink). 2773 * V4 client can not mount such symlink. This is a regression 2774 * from V2/V3. 2775 * 2776 * In the same exported filesystem, if the security flavor used 2777 * is not an explicitly shared flavor, limit the view to the visible 2778 * list entries only. This is not a WRONGSEC case because it's already 2779 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2780 */ 2781 if (!different_export && 2782 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2783 cs->access & CS_ACCESS_LIMITED)) { 2784 if (! nfs_visible(cs->exi, vp, &different_export)) { 2785 VN_RELE(vp); 2786 return (puterrno4(ENOENT)); 2787 } 2788 } 2789 2790 /* 2791 * If it's a mountpoint, then traverse it. 2792 */ 2793 if (vn_ismntpt(vp)) { 2794 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2795 pre_tvp = vp; /* save pre-traversed vnode */ 2796 2797 /* 2798 * hold pre_tvp to counteract rele by traverse. We will 2799 * need pre_tvp below if checkexport4 fails 2800 */ 2801 VN_HOLD(pre_tvp); 2802 if ((error = traverse(&vp)) != 0) { 2803 VN_RELE(vp); 2804 VN_RELE(pre_tvp); 2805 return (puterrno4(error)); 2806 } 2807 different_export = 1; 2808 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2809 /* 2810 * The vfsp comparison is to handle the case where 2811 * a LOFS mount is shared. lo_lookup traverses mount points, 2812 * and NFS is unaware of local fs transistions because 2813 * v_vfsmountedhere isn't set. For this special LOFS case, 2814 * the dir and the obj returned by lookup will have different 2815 * vfs ptrs. 2816 */ 2817 different_export = 1; 2818 } 2819 2820 if (different_export) { 2821 2822 bzero(&fid, sizeof (fid)); 2823 fid.fid_len = MAXFIDSZ; 2824 error = vop_fid_pseudo(vp, &fid); 2825 if (error) { 2826 VN_RELE(vp); 2827 if (pre_tvp) 2828 VN_RELE(pre_tvp); 2829 return (puterrno4(error)); 2830 } 2831 2832 if (dotdot) 2833 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2834 else 2835 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2836 2837 if (exi == NULL) { 2838 if (pre_tvp) { 2839 /* 2840 * If this vnode is a mounted-on vnode, 2841 * but the mounted-on file system is not 2842 * exported, send back the filehandle for 2843 * the mounted-on vnode, not the root of 2844 * the mounted-on file system. 2845 */ 2846 VN_RELE(vp); 2847 vp = pre_tvp; 2848 exi = pre_exi; 2849 } else { 2850 VN_RELE(vp); 2851 return (puterrno4(EACCES)); 2852 } 2853 } else if (pre_tvp) { 2854 /* we're done with pre_tvp now. release extra hold */ 2855 VN_RELE(pre_tvp); 2856 } 2857 2858 cs->exi = exi; 2859 2860 /* 2861 * Now we do a checkauth4. The reason is that 2862 * this client/user may not have access to the new 2863 * exported file system, and if they do, 2864 * the client/user may be mapped to a different uid. 2865 * 2866 * We start with a new cr, because the checkauth4 done 2867 * in the PUT*FH operation over wrote the cred's uid, 2868 * gid, etc, and we want the real thing before calling 2869 * checkauth4() 2870 */ 2871 crfree(cs->cr); 2872 cs->cr = crdup(cs->basecr); 2873 2874 oldvp = cs->vp; 2875 cs->vp = vp; 2876 is_newvp = TRUE; 2877 2878 stat = call_checkauth4(cs, req); 2879 if (stat != NFS4_OK) { 2880 VN_RELE(cs->vp); 2881 cs->vp = oldvp; 2882 return (stat); 2883 } 2884 } 2885 2886 /* 2887 * After various NFS checks, do a label check on the path 2888 * component. The label on this path should either be the 2889 * global zone's label or a zone's label. We are only 2890 * interested in the zone's label because exported files 2891 * in global zone is accessible (though read-only) to 2892 * clients. The exportability/visibility check is already 2893 * done before reaching this code. 2894 */ 2895 if (is_system_labeled()) { 2896 bslabel_t *clabel; 2897 2898 ASSERT(req->rq_label != NULL); 2899 clabel = req->rq_label; 2900 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2901 "got client label from request(1)", struct svc_req *, req); 2902 2903 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2904 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2905 cs->exi)) { 2906 error = EACCES; 2907 goto err_out; 2908 } 2909 } else { 2910 /* 2911 * We grant access to admin_low label clients 2912 * only if the client is trusted, i.e. also 2913 * running Solaris Trusted Extension. 2914 */ 2915 struct sockaddr *ca; 2916 int addr_type; 2917 void *ipaddr; 2918 tsol_tpc_t *tp; 2919 2920 ca = (struct sockaddr *)svc_getrpccaller( 2921 req->rq_xprt)->buf; 2922 if (ca->sa_family == AF_INET) { 2923 addr_type = IPV4_VERSION; 2924 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2925 } else if (ca->sa_family == AF_INET6) { 2926 addr_type = IPV6_VERSION; 2927 ipaddr = &((struct sockaddr_in6 *) 2928 ca)->sin6_addr; 2929 } 2930 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2931 if (tp == NULL || tp->tpc_tp.tp_doi != 2932 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2933 SUN_CIPSO) { 2934 if (tp != NULL) 2935 TPC_RELE(tp); 2936 error = EACCES; 2937 goto err_out; 2938 } 2939 TPC_RELE(tp); 2940 } 2941 } 2942 2943 error = makefh4(&cs->fh, vp, cs->exi); 2944 2945 err_out: 2946 if (error) { 2947 if (is_newvp) { 2948 VN_RELE(cs->vp); 2949 cs->vp = oldvp; 2950 } else 2951 VN_RELE(vp); 2952 return (puterrno4(error)); 2953 } 2954 2955 if (!is_newvp) { 2956 if (cs->vp) 2957 VN_RELE(cs->vp); 2958 cs->vp = vp; 2959 } else if (oldvp) 2960 VN_RELE(oldvp); 2961 2962 /* 2963 * if did lookup on attrdir and didn't lookup .., set named 2964 * attr fh flag 2965 */ 2966 if (attrdir && ! dotdot) 2967 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2968 2969 /* Assume false for now, open proc will set this */ 2970 cs->mandlock = FALSE; 2971 2972 return (NFS4_OK); 2973 } 2974 2975 /* ARGSUSED */ 2976 static void 2977 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2978 struct compound_state *cs) 2979 { 2980 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2981 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2982 char *nm; 2983 uint_t len; 2984 struct sockaddr *ca; 2985 char *name = NULL; 2986 nfsstat4 status; 2987 2988 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2989 LOOKUP4args *, args); 2990 2991 if (cs->vp == NULL) { 2992 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2993 goto out; 2994 } 2995 2996 if (cs->vp->v_type == VLNK) { 2997 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2998 goto out; 2999 } 3000 3001 if (cs->vp->v_type != VDIR) { 3002 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3003 goto out; 3004 } 3005 3006 status = utf8_dir_verify(&args->objname); 3007 if (status != NFS4_OK) { 3008 *cs->statusp = resp->status = status; 3009 goto out; 3010 } 3011 3012 nm = utf8_to_str(&args->objname, &len, NULL); 3013 if (nm == NULL) { 3014 *cs->statusp = resp->status = NFS4ERR_INVAL; 3015 goto out; 3016 } 3017 3018 if (len > MAXNAMELEN) { 3019 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 3020 kmem_free(nm, len); 3021 goto out; 3022 } 3023 3024 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3025 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 3026 MAXPATHLEN + 1); 3027 3028 if (name == NULL) { 3029 *cs->statusp = resp->status = NFS4ERR_INVAL; 3030 kmem_free(nm, len); 3031 goto out; 3032 } 3033 3034 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 3035 3036 if (name != nm) 3037 kmem_free(name, MAXPATHLEN + 1); 3038 kmem_free(nm, len); 3039 3040 out: 3041 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 3042 LOOKUP4res *, resp); 3043 } 3044 3045 /* ARGSUSED */ 3046 static void 3047 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3048 struct compound_state *cs) 3049 { 3050 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 3051 3052 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 3053 3054 if (cs->vp == NULL) { 3055 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3056 goto out; 3057 } 3058 3059 if (cs->vp->v_type != VDIR) { 3060 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3061 goto out; 3062 } 3063 3064 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 3065 3066 /* 3067 * From NFSV4 Specification, LOOKUPP should not check for 3068 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 3069 */ 3070 if (resp->status == NFS4ERR_WRONGSEC) { 3071 *cs->statusp = resp->status = NFS4_OK; 3072 } 3073 3074 out: 3075 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 3076 LOOKUPP4res *, resp); 3077 } 3078 3079 3080 /*ARGSUSED2*/ 3081 static void 3082 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3083 struct compound_state *cs) 3084 { 3085 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 3086 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 3087 vnode_t *avp = NULL; 3088 int lookup_flags = LOOKUP_XATTR, error; 3089 int exp_ro = 0; 3090 3091 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 3092 OPENATTR4args *, args); 3093 3094 if (cs->vp == NULL) { 3095 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3096 goto out; 3097 } 3098 3099 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3100 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3101 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3102 goto out; 3103 } 3104 3105 /* 3106 * If file system supports passing ACE mask to VOP_ACCESS then 3107 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3108 */ 3109 3110 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3111 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3112 V_ACE_MASK, cs->cr, NULL); 3113 else 3114 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3115 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3116 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3117 3118 if (error) { 3119 *cs->statusp = resp->status = puterrno4(EACCES); 3120 goto out; 3121 } 3122 3123 /* 3124 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3125 * the file system is exported read-only -- regardless of 3126 * createdir flag. Otherwise the attrdir would be created 3127 * (assuming server fs isn't mounted readonly locally). If 3128 * VOP_LOOKUP returns ENOENT in this case, the error will 3129 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3130 * because specfs has no VOP_LOOKUP op, so the macro would 3131 * return ENOSYS. EINVAL is returned by all (current) 3132 * Solaris file system implementations when any of their 3133 * restrictions are violated (xattr(dir) can't have xattrdir). 3134 * Returning NOTSUPP is more appropriate in this case 3135 * because the object will never be able to have an attrdir. 3136 */ 3137 if (args->createdir && ! (exp_ro = rdonly4(req, cs))) 3138 lookup_flags |= CREATE_XATTR_DIR; 3139 3140 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3141 NULL, NULL, NULL); 3142 3143 if (error) { 3144 if (error == ENOENT && args->createdir && exp_ro) 3145 *cs->statusp = resp->status = puterrno4(EROFS); 3146 else if (error == EINVAL || error == ENOSYS) 3147 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3148 else 3149 *cs->statusp = resp->status = puterrno4(error); 3150 goto out; 3151 } 3152 3153 ASSERT(avp->v_flag & V_XATTRDIR); 3154 3155 error = makefh4(&cs->fh, avp, cs->exi); 3156 3157 if (error) { 3158 VN_RELE(avp); 3159 *cs->statusp = resp->status = puterrno4(error); 3160 goto out; 3161 } 3162 3163 VN_RELE(cs->vp); 3164 cs->vp = avp; 3165 3166 /* 3167 * There is no requirement for an attrdir fh flag 3168 * because the attrdir has a vnode flag to distinguish 3169 * it from regular (non-xattr) directories. The 3170 * FH4_ATTRDIR flag is set for future sanity checks. 3171 */ 3172 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3173 *cs->statusp = resp->status = NFS4_OK; 3174 3175 out: 3176 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3177 OPENATTR4res *, resp); 3178 } 3179 3180 static int 3181 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3182 caller_context_t *ct) 3183 { 3184 int error; 3185 int i; 3186 clock_t delaytime; 3187 3188 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3189 3190 /* 3191 * Don't block on mandatory locks. If this routine returns 3192 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3193 */ 3194 uio->uio_fmode = FNONBLOCK; 3195 3196 for (i = 0; i < rfs4_maxlock_tries; i++) { 3197 3198 3199 if (direction == FREAD) { 3200 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3201 error = VOP_READ(vp, uio, ioflag, cred, ct); 3202 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3203 } else { 3204 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3205 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3206 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3207 } 3208 3209 if (error != EAGAIN) 3210 break; 3211 3212 if (i < rfs4_maxlock_tries - 1) { 3213 delay(delaytime); 3214 delaytime *= 2; 3215 } 3216 } 3217 3218 return (error); 3219 } 3220 3221 /* ARGSUSED */ 3222 static void 3223 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3224 struct compound_state *cs) 3225 { 3226 READ4args *args = &argop->nfs_argop4_u.opread; 3227 READ4res *resp = &resop->nfs_resop4_u.opread; 3228 int error; 3229 int verror; 3230 vnode_t *vp; 3231 struct vattr va; 3232 struct iovec iov, *iovp = NULL; 3233 int iovcnt; 3234 struct uio uio; 3235 u_offset_t offset; 3236 bool_t *deleg = &cs->deleg; 3237 nfsstat4 stat; 3238 int in_crit = 0; 3239 mblk_t *mp = NULL; 3240 int alloc_err = 0; 3241 int rdma_used = 0; 3242 int loaned_buffers; 3243 caller_context_t ct; 3244 struct uio *uiop; 3245 3246 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3247 READ4args, args); 3248 3249 vp = cs->vp; 3250 if (vp == NULL) { 3251 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3252 goto out; 3253 } 3254 if (cs->access == CS_ACCESS_DENIED) { 3255 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3256 goto out; 3257 } 3258 3259 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3260 deleg, TRUE, &ct)) != NFS4_OK) { 3261 *cs->statusp = resp->status = stat; 3262 goto out; 3263 } 3264 3265 /* 3266 * Enter the critical region before calling VOP_RWLOCK 3267 * to avoid a deadlock with write requests. 3268 */ 3269 if (nbl_need_check(vp)) { 3270 nbl_start_crit(vp, RW_READER); 3271 in_crit = 1; 3272 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3273 &ct)) { 3274 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3275 goto out; 3276 } 3277 } 3278 3279 if (args->wlist) { 3280 if (args->count > clist_len(args->wlist)) { 3281 *cs->statusp = resp->status = NFS4ERR_INVAL; 3282 goto out; 3283 } 3284 rdma_used = 1; 3285 } 3286 3287 /* use loaned buffers for TCP */ 3288 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3289 3290 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3291 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3292 3293 /* 3294 * If we can't get the attributes, then we can't do the 3295 * right access checking. So, we'll fail the request. 3296 */ 3297 if (verror) { 3298 *cs->statusp = resp->status = puterrno4(verror); 3299 goto out; 3300 } 3301 3302 if (vp->v_type != VREG) { 3303 *cs->statusp = resp->status = 3304 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3305 goto out; 3306 } 3307 3308 if (crgetuid(cs->cr) != va.va_uid && 3309 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3310 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3311 *cs->statusp = resp->status = puterrno4(error); 3312 goto out; 3313 } 3314 3315 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3316 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3317 goto out; 3318 } 3319 3320 offset = args->offset; 3321 if (offset >= va.va_size) { 3322 *cs->statusp = resp->status = NFS4_OK; 3323 resp->eof = TRUE; 3324 resp->data_len = 0; 3325 resp->data_val = NULL; 3326 resp->mblk = NULL; 3327 /* RDMA */ 3328 resp->wlist = args->wlist; 3329 resp->wlist_len = resp->data_len; 3330 *cs->statusp = resp->status = NFS4_OK; 3331 if (resp->wlist) 3332 clist_zero_len(resp->wlist); 3333 goto out; 3334 } 3335 3336 if (args->count == 0) { 3337 *cs->statusp = resp->status = NFS4_OK; 3338 resp->eof = FALSE; 3339 resp->data_len = 0; 3340 resp->data_val = NULL; 3341 resp->mblk = NULL; 3342 /* RDMA */ 3343 resp->wlist = args->wlist; 3344 resp->wlist_len = resp->data_len; 3345 if (resp->wlist) 3346 clist_zero_len(resp->wlist); 3347 goto out; 3348 } 3349 3350 /* 3351 * Do not allocate memory more than maximum allowed 3352 * transfer size 3353 */ 3354 if (args->count > rfs4_tsize(req)) 3355 args->count = rfs4_tsize(req); 3356 3357 if (loaned_buffers) { 3358 uiop = (uio_t *)rfs_setup_xuio(vp); 3359 ASSERT(uiop != NULL); 3360 uiop->uio_segflg = UIO_SYSSPACE; 3361 uiop->uio_loffset = args->offset; 3362 uiop->uio_resid = args->count; 3363 3364 /* Jump to do the read if successful */ 3365 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3366 /* 3367 * Need to hold the vnode until after VOP_RETZCBUF() 3368 * is called. 3369 */ 3370 VN_HOLD(vp); 3371 goto doio_read; 3372 } 3373 3374 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3375 uiop->uio_loffset, int, uiop->uio_resid); 3376 3377 uiop->uio_extflg = 0; 3378 3379 /* failure to setup for zero copy */ 3380 rfs_free_xuio((void *)uiop); 3381 loaned_buffers = 0; 3382 } 3383 3384 /* 3385 * If returning data via RDMA Write, then grab the chunk list. If we 3386 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3387 */ 3388 if (rdma_used) { 3389 mp = NULL; 3390 (void) rdma_get_wchunk(req, &iov, args->wlist); 3391 uio.uio_iov = &iov; 3392 uio.uio_iovcnt = 1; 3393 } else { 3394 /* 3395 * mp will contain the data to be sent out in the read reply. 3396 * It will be freed after the reply has been sent. 3397 */ 3398 mp = rfs_read_alloc(args->count, &iovp, &iovcnt); 3399 ASSERT(mp != NULL); 3400 ASSERT(alloc_err == 0); 3401 uio.uio_iov = iovp; 3402 uio.uio_iovcnt = iovcnt; 3403 } 3404 3405 uio.uio_segflg = UIO_SYSSPACE; 3406 uio.uio_extflg = UIO_COPY_CACHED; 3407 uio.uio_loffset = args->offset; 3408 uio.uio_resid = args->count; 3409 uiop = &uio; 3410 3411 doio_read: 3412 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3413 3414 va.va_mask = AT_SIZE; 3415 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3416 3417 if (error) { 3418 if (mp) 3419 freemsg(mp); 3420 *cs->statusp = resp->status = puterrno4(error); 3421 goto out; 3422 } 3423 3424 /* make mblk using zc buffers */ 3425 if (loaned_buffers) { 3426 mp = uio_to_mblk(uiop); 3427 ASSERT(mp != NULL); 3428 } 3429 3430 *cs->statusp = resp->status = NFS4_OK; 3431 3432 ASSERT(uiop->uio_resid >= 0); 3433 resp->data_len = args->count - uiop->uio_resid; 3434 if (mp) { 3435 resp->data_val = (char *)mp->b_datap->db_base; 3436 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3437 } else { 3438 resp->data_val = (caddr_t)iov.iov_base; 3439 } 3440 3441 resp->mblk = mp; 3442 3443 if (!verror && offset + resp->data_len == va.va_size) 3444 resp->eof = TRUE; 3445 else 3446 resp->eof = FALSE; 3447 3448 if (rdma_used) { 3449 if (!rdma_setup_read_data4(args, resp)) { 3450 *cs->statusp = resp->status = NFS4ERR_INVAL; 3451 } 3452 } else { 3453 resp->wlist = NULL; 3454 } 3455 3456 out: 3457 if (in_crit) 3458 nbl_end_crit(vp); 3459 3460 if (iovp != NULL) 3461 kmem_free(iovp, iovcnt * sizeof (struct iovec)); 3462 3463 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3464 READ4res *, resp); 3465 } 3466 3467 static void 3468 rfs4_op_read_free(nfs_resop4 *resop) 3469 { 3470 READ4res *resp = &resop->nfs_resop4_u.opread; 3471 3472 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3473 freemsg(resp->mblk); 3474 resp->mblk = NULL; 3475 resp->data_val = NULL; 3476 resp->data_len = 0; 3477 } 3478 } 3479 3480 static void 3481 rfs4_op_readdir_free(nfs_resop4 * resop) 3482 { 3483 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3484 3485 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3486 freeb(resp->mblk); 3487 resp->mblk = NULL; 3488 resp->data_len = 0; 3489 } 3490 } 3491 3492 3493 /* ARGSUSED */ 3494 static void 3495 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3496 struct compound_state *cs) 3497 { 3498 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3499 int error; 3500 vnode_t *vp; 3501 struct exportinfo *exi, *sav_exi; 3502 nfs_fh4_fmt_t *fh_fmtp; 3503 nfs_export_t *ne = nfs_get_export(); 3504 3505 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3506 3507 if (cs->vp) { 3508 VN_RELE(cs->vp); 3509 cs->vp = NULL; 3510 } 3511 3512 if (cs->cr) 3513 crfree(cs->cr); 3514 3515 cs->cr = crdup(cs->basecr); 3516 3517 vp = ne->exi_public->exi_vp; 3518 if (vp == NULL) { 3519 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3520 goto out; 3521 } 3522 3523 error = makefh4(&cs->fh, vp, ne->exi_public); 3524 if (error != 0) { 3525 *cs->statusp = resp->status = puterrno4(error); 3526 goto out; 3527 } 3528 sav_exi = cs->exi; 3529 if (ne->exi_public == ne->exi_root) { 3530 /* 3531 * No filesystem is actually shared public, so we default 3532 * to exi_root. In this case, we must check whether root 3533 * is exported. 3534 */ 3535 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3536 3537 /* 3538 * if root filesystem is exported, the exportinfo struct that we 3539 * should use is what checkexport4 returns, because root_exi is 3540 * actually a mostly empty struct. 3541 */ 3542 exi = checkexport4(&fh_fmtp->fh4_fsid, 3543 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3544 cs->exi = ((exi != NULL) ? exi : ne->exi_public); 3545 } else { 3546 /* 3547 * it's a properly shared filesystem 3548 */ 3549 cs->exi = ne->exi_public; 3550 } 3551 3552 if (is_system_labeled()) { 3553 bslabel_t *clabel; 3554 3555 ASSERT(req->rq_label != NULL); 3556 clabel = req->rq_label; 3557 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3558 "got client label from request(1)", 3559 struct svc_req *, req); 3560 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3561 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3562 cs->exi)) { 3563 *cs->statusp = resp->status = 3564 NFS4ERR_SERVERFAULT; 3565 goto out; 3566 } 3567 } 3568 } 3569 3570 VN_HOLD(vp); 3571 cs->vp = vp; 3572 3573 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3574 VN_RELE(cs->vp); 3575 cs->vp = NULL; 3576 cs->exi = sav_exi; 3577 goto out; 3578 } 3579 3580 *cs->statusp = resp->status = NFS4_OK; 3581 out: 3582 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3583 PUTPUBFH4res *, resp); 3584 } 3585 3586 /* 3587 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3588 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3589 * or joe have restrictive search permissions, then we shouldn't let 3590 * the client get a file handle. This is easy to enforce. However, we 3591 * don't know what security flavor should be used until we resolve the 3592 * path name. Another complication is uid mapping. If root is 3593 * the user, then it will be mapped to the anonymous user by default, 3594 * but we won't know that till we've resolved the path name. And we won't 3595 * know what the anonymous user is. 3596 * Luckily, SECINFO is specified to take a full filename. 3597 * So what we will have to in rfs4_op_lookup is check that flavor of 3598 * the target object matches that of the request, and if root was the 3599 * caller, check for the root= and anon= options, and if necessary, 3600 * repeat the lookup using the right cred_t. But that's not done yet. 3601 */ 3602 /* ARGSUSED */ 3603 static void 3604 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3605 struct compound_state *cs) 3606 { 3607 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3608 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3609 nfs_fh4_fmt_t *fh_fmtp; 3610 3611 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3612 PUTFH4args *, args); 3613 3614 if (cs->vp) { 3615 VN_RELE(cs->vp); 3616 cs->vp = NULL; 3617 } 3618 3619 if (cs->cr) { 3620 crfree(cs->cr); 3621 cs->cr = NULL; 3622 } 3623 3624 3625 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3626 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3627 goto out; 3628 } 3629 3630 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3631 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3632 NULL); 3633 3634 if (cs->exi == NULL) { 3635 *cs->statusp = resp->status = NFS4ERR_STALE; 3636 goto out; 3637 } 3638 3639 cs->cr = crdup(cs->basecr); 3640 3641 ASSERT(cs->cr != NULL); 3642 3643 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3644 *cs->statusp = resp->status; 3645 goto out; 3646 } 3647 3648 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3649 VN_RELE(cs->vp); 3650 cs->vp = NULL; 3651 goto out; 3652 } 3653 3654 nfs_fh4_copy(&args->object, &cs->fh); 3655 *cs->statusp = resp->status = NFS4_OK; 3656 cs->deleg = FALSE; 3657 3658 out: 3659 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3660 PUTFH4res *, resp); 3661 } 3662 3663 /* ARGSUSED */ 3664 static void 3665 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3666 struct compound_state *cs) 3667 { 3668 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3669 int error; 3670 fid_t fid; 3671 struct exportinfo *exi, *sav_exi; 3672 3673 DTRACE_NFSV4_1(op__putrootfh__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 /* 3686 * Using rootdir, the system root vnode, 3687 * get its fid. 3688 */ 3689 bzero(&fid, sizeof (fid)); 3690 fid.fid_len = MAXFIDSZ; 3691 error = vop_fid_pseudo(ZONE_ROOTVP(), &fid); 3692 if (error != 0) { 3693 *cs->statusp = resp->status = puterrno4(error); 3694 goto out; 3695 } 3696 3697 /* 3698 * Then use the root fsid & fid it to find out if it's exported 3699 * 3700 * If the server root isn't exported directly, then 3701 * it should at least be a pseudo export based on 3702 * one or more exports further down in the server's 3703 * file tree. 3704 */ 3705 exi = checkexport4(&ZONE_ROOTVP()->v_vfsp->vfs_fsid, &fid, NULL); 3706 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3707 NFS4_DEBUG(rfs4_debug, 3708 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3709 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3710 goto out; 3711 } 3712 3713 /* 3714 * Now make a filehandle based on the root 3715 * export and root vnode. 3716 */ 3717 error = makefh4(&cs->fh, ZONE_ROOTVP(), exi); 3718 if (error != 0) { 3719 *cs->statusp = resp->status = puterrno4(error); 3720 goto out; 3721 } 3722 3723 sav_exi = cs->exi; 3724 cs->exi = exi; 3725 3726 VN_HOLD(ZONE_ROOTVP()); 3727 cs->vp = ZONE_ROOTVP(); 3728 3729 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3730 VN_RELE(cs->vp); 3731 cs->vp = NULL; 3732 cs->exi = sav_exi; 3733 goto out; 3734 } 3735 3736 *cs->statusp = resp->status = NFS4_OK; 3737 cs->deleg = FALSE; 3738 out: 3739 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3740 PUTROOTFH4res *, resp); 3741 } 3742 3743 /* 3744 * readlink: args: CURRENT_FH. 3745 * res: status. If success - CURRENT_FH unchanged, return linktext. 3746 */ 3747 3748 /* ARGSUSED */ 3749 static void 3750 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3751 struct compound_state *cs) 3752 { 3753 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3754 int error; 3755 vnode_t *vp; 3756 struct iovec iov; 3757 struct vattr va; 3758 struct uio uio; 3759 char *data; 3760 struct sockaddr *ca; 3761 char *name = NULL; 3762 int is_referral; 3763 3764 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3765 3766 /* CURRENT_FH: directory */ 3767 vp = cs->vp; 3768 if (vp == NULL) { 3769 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3770 goto out; 3771 } 3772 3773 if (cs->access == CS_ACCESS_DENIED) { 3774 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3775 goto out; 3776 } 3777 3778 /* Is it a referral? */ 3779 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3780 3781 is_referral = 1; 3782 3783 } else { 3784 3785 is_referral = 0; 3786 3787 if (vp->v_type == VDIR) { 3788 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3789 goto out; 3790 } 3791 3792 if (vp->v_type != VLNK) { 3793 *cs->statusp = resp->status = NFS4ERR_INVAL; 3794 goto out; 3795 } 3796 3797 } 3798 3799 va.va_mask = AT_MODE; 3800 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3801 if (error) { 3802 *cs->statusp = resp->status = puterrno4(error); 3803 goto out; 3804 } 3805 3806 if (MANDLOCK(vp, va.va_mode)) { 3807 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3808 goto out; 3809 } 3810 3811 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3812 3813 if (is_referral) { 3814 char *s; 3815 size_t strsz; 3816 kstat_named_t *stat = 3817 cs->exi->exi_ne->ne_globals->svstat[NFS_V4]; 3818 3819 /* Get an artificial symlink based on a referral */ 3820 s = build_symlink(vp, cs->cr, &strsz); 3821 stat[NFS_REFERLINKS].value.ui64++; 3822 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3823 vnode_t *, vp, char *, s); 3824 if (s == NULL) 3825 error = EINVAL; 3826 else { 3827 error = 0; 3828 (void) strlcpy(data, s, MAXPATHLEN + 1); 3829 kmem_free(s, strsz); 3830 } 3831 3832 } else { 3833 3834 iov.iov_base = data; 3835 iov.iov_len = MAXPATHLEN; 3836 uio.uio_iov = &iov; 3837 uio.uio_iovcnt = 1; 3838 uio.uio_segflg = UIO_SYSSPACE; 3839 uio.uio_extflg = UIO_COPY_CACHED; 3840 uio.uio_loffset = 0; 3841 uio.uio_resid = MAXPATHLEN; 3842 3843 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3844 3845 if (!error) 3846 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3847 } 3848 3849 if (error) { 3850 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3851 *cs->statusp = resp->status = puterrno4(error); 3852 goto out; 3853 } 3854 3855 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3856 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3857 MAXPATHLEN + 1); 3858 3859 if (name == NULL) { 3860 /* 3861 * Even though the conversion failed, we return 3862 * something. We just don't translate it. 3863 */ 3864 name = data; 3865 } 3866 3867 /* 3868 * treat link name as data 3869 */ 3870 (void) str_to_utf8(name, (utf8string *)&resp->link); 3871 3872 if (name != data) 3873 kmem_free(name, MAXPATHLEN + 1); 3874 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3875 *cs->statusp = resp->status = NFS4_OK; 3876 3877 out: 3878 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3879 READLINK4res *, resp); 3880 } 3881 3882 static void 3883 rfs4_op_readlink_free(nfs_resop4 *resop) 3884 { 3885 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3886 utf8string *symlink = (utf8string *)&resp->link; 3887 3888 if (symlink->utf8string_val) { 3889 UTF8STRING_FREE(*symlink) 3890 } 3891 } 3892 3893 /* 3894 * release_lockowner: 3895 * Release any state associated with the supplied 3896 * lockowner. Note if any lo_state is holding locks we will not 3897 * rele that lo_state and thus the lockowner will not be destroyed. 3898 * A client using lock after the lock owner stateid has been released 3899 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3900 * to reissue the lock with new_lock_owner set to TRUE. 3901 * args: lock_owner 3902 * res: status 3903 */ 3904 /* ARGSUSED */ 3905 static void 3906 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3907 struct svc_req *req, struct compound_state *cs) 3908 { 3909 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3910 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3911 rfs4_lockowner_t *lo; 3912 rfs4_openowner_t *oo; 3913 rfs4_state_t *sp; 3914 rfs4_lo_state_t *lsp; 3915 rfs4_client_t *cp; 3916 bool_t create = FALSE; 3917 locklist_t *llist; 3918 sysid_t sysid; 3919 3920 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3921 cs, RELEASE_LOCKOWNER4args *, ap); 3922 3923 /* Make sure there is a clientid around for this request */ 3924 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3925 3926 if (cp == NULL) { 3927 *cs->statusp = resp->status = 3928 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3929 goto out; 3930 } 3931 rfs4_client_rele(cp); 3932 3933 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3934 if (lo == NULL) { 3935 *cs->statusp = resp->status = NFS4_OK; 3936 goto out; 3937 } 3938 ASSERT(lo->rl_client != NULL); 3939 3940 /* 3941 * Check for EXPIRED client. If so will reap state with in a lease 3942 * period or on next set_clientid_confirm step 3943 */ 3944 if (rfs4_lease_expired(lo->rl_client)) { 3945 rfs4_lockowner_rele(lo); 3946 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3947 goto out; 3948 } 3949 3950 /* 3951 * If no sysid has been assigned, then no locks exist; just return. 3952 */ 3953 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3954 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 3955 rfs4_lockowner_rele(lo); 3956 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3957 goto out; 3958 } 3959 3960 sysid = lo->rl_client->rc_sysidt; 3961 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3962 3963 /* 3964 * Mark the lockowner invalid. 3965 */ 3966 rfs4_dbe_hide(lo->rl_dbe); 3967 3968 /* 3969 * sysid-pid pair should now not be used since the lockowner is 3970 * invalid. If the client were to instantiate the lockowner again 3971 * it would be assigned a new pid. Thus we can get the list of 3972 * current locks. 3973 */ 3974 3975 llist = flk_get_active_locks(sysid, lo->rl_pid); 3976 /* If we are still holding locks fail */ 3977 if (llist != NULL) { 3978 3979 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3980 3981 flk_free_locklist(llist); 3982 /* 3983 * We need to unhide the lockowner so the client can 3984 * try it again. The bad thing here is if the client 3985 * has a logic error that took it here in the first place 3986 * they probably have lost accounting of the locks that it 3987 * is holding. So we may have dangling state until the 3988 * open owner state is reaped via close. One scenario 3989 * that could possibly occur is that the client has 3990 * sent the unlock request(s) in separate threads 3991 * and has not waited for the replies before sending the 3992 * RELEASE_LOCKOWNER request. Presumably, it would expect 3993 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3994 * reissuing the request. 3995 */ 3996 rfs4_dbe_unhide(lo->rl_dbe); 3997 rfs4_lockowner_rele(lo); 3998 goto out; 3999 } 4000 4001 /* 4002 * For the corresponding client we need to check each open 4003 * owner for any opens that have lockowner state associated 4004 * with this lockowner. 4005 */ 4006 4007 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4008 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 4009 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 4010 4011 rfs4_dbe_lock(oo->ro_dbe); 4012 for (sp = list_head(&oo->ro_statelist); sp != NULL; 4013 sp = list_next(&oo->ro_statelist, sp)) { 4014 4015 rfs4_dbe_lock(sp->rs_dbe); 4016 for (lsp = list_head(&sp->rs_lostatelist); 4017 lsp != NULL; 4018 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4019 if (lsp->rls_locker == lo) { 4020 rfs4_dbe_lock(lsp->rls_dbe); 4021 rfs4_dbe_invalidate(lsp->rls_dbe); 4022 rfs4_dbe_unlock(lsp->rls_dbe); 4023 } 4024 } 4025 rfs4_dbe_unlock(sp->rs_dbe); 4026 } 4027 rfs4_dbe_unlock(oo->ro_dbe); 4028 } 4029 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4030 4031 rfs4_lockowner_rele(lo); 4032 4033 *cs->statusp = resp->status = NFS4_OK; 4034 4035 out: 4036 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4037 cs, RELEASE_LOCKOWNER4res *, resp); 4038 } 4039 4040 /* 4041 * short utility function to lookup a file and recall the delegation 4042 */ 4043 static rfs4_file_t * 4044 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4045 int *lkup_error, cred_t *cr) 4046 { 4047 vnode_t *vp; 4048 rfs4_file_t *fp = NULL; 4049 bool_t fcreate = FALSE; 4050 int error; 4051 4052 if (vpp) 4053 *vpp = NULL; 4054 4055 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4056 NULL)) == 0) { 4057 if (vp->v_type == VREG) 4058 fp = rfs4_findfile(vp, NULL, &fcreate); 4059 if (vpp) 4060 *vpp = vp; 4061 else 4062 VN_RELE(vp); 4063 } 4064 4065 if (lkup_error) 4066 *lkup_error = error; 4067 4068 return (fp); 4069 } 4070 4071 /* 4072 * remove: args: CURRENT_FH: directory; name. 4073 * res: status. If success - CURRENT_FH unchanged, return change_info 4074 * for directory. 4075 */ 4076 /* ARGSUSED */ 4077 static void 4078 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4079 struct compound_state *cs) 4080 { 4081 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4082 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4083 int error; 4084 vnode_t *dvp, *vp; 4085 struct vattr bdva, idva, adva; 4086 char *nm; 4087 uint_t len; 4088 rfs4_file_t *fp; 4089 int in_crit = 0; 4090 bslabel_t *clabel; 4091 struct sockaddr *ca; 4092 char *name = NULL; 4093 nfsstat4 status; 4094 4095 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4096 REMOVE4args *, args); 4097 4098 /* CURRENT_FH: directory */ 4099 dvp = cs->vp; 4100 if (dvp == NULL) { 4101 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4102 goto out; 4103 } 4104 4105 if (cs->access == CS_ACCESS_DENIED) { 4106 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4107 goto out; 4108 } 4109 4110 /* 4111 * If there is an unshared filesystem mounted on this vnode, 4112 * Do not allow to remove anything in this directory. 4113 */ 4114 if (vn_ismntpt(dvp)) { 4115 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4116 goto out; 4117 } 4118 4119 if (dvp->v_type != VDIR) { 4120 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4121 goto out; 4122 } 4123 4124 status = utf8_dir_verify(&args->target); 4125 if (status != NFS4_OK) { 4126 *cs->statusp = resp->status = status; 4127 goto out; 4128 } 4129 4130 /* 4131 * Lookup the file so that we can check if it's a directory 4132 */ 4133 nm = utf8_to_fn(&args->target, &len, NULL); 4134 if (nm == NULL) { 4135 *cs->statusp = resp->status = NFS4ERR_INVAL; 4136 goto out; 4137 } 4138 4139 if (len > MAXNAMELEN) { 4140 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4141 kmem_free(nm, len); 4142 goto out; 4143 } 4144 4145 if (rdonly4(req, cs)) { 4146 *cs->statusp = resp->status = NFS4ERR_ROFS; 4147 kmem_free(nm, len); 4148 goto out; 4149 } 4150 4151 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4152 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4153 MAXPATHLEN + 1); 4154 4155 if (name == NULL) { 4156 *cs->statusp = resp->status = NFS4ERR_INVAL; 4157 kmem_free(nm, len); 4158 goto out; 4159 } 4160 4161 /* 4162 * Lookup the file to determine type and while we are see if 4163 * there is a file struct around and check for delegation. 4164 * We don't need to acquire va_seq before this lookup, if 4165 * it causes an update, cinfo.before will not match, which will 4166 * trigger a cache flush even if atomic is TRUE. 4167 */ 4168 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4169 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4170 NULL)) { 4171 VN_RELE(vp); 4172 rfs4_file_rele(fp); 4173 *cs->statusp = resp->status = NFS4ERR_DELAY; 4174 if (nm != name) 4175 kmem_free(name, MAXPATHLEN + 1); 4176 kmem_free(nm, len); 4177 goto out; 4178 } 4179 } 4180 4181 /* Didn't find anything to remove */ 4182 if (vp == NULL) { 4183 *cs->statusp = resp->status = error; 4184 if (nm != name) 4185 kmem_free(name, MAXPATHLEN + 1); 4186 kmem_free(nm, len); 4187 goto out; 4188 } 4189 4190 if (nbl_need_check(vp)) { 4191 nbl_start_crit(vp, RW_READER); 4192 in_crit = 1; 4193 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4194 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4195 if (nm != name) 4196 kmem_free(name, MAXPATHLEN + 1); 4197 kmem_free(nm, len); 4198 nbl_end_crit(vp); 4199 VN_RELE(vp); 4200 if (fp) { 4201 rfs4_clear_dont_grant(fp); 4202 rfs4_file_rele(fp); 4203 } 4204 goto out; 4205 } 4206 } 4207 4208 /* check label before allowing removal */ 4209 if (is_system_labeled()) { 4210 ASSERT(req->rq_label != NULL); 4211 clabel = req->rq_label; 4212 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4213 "got client label from request(1)", 4214 struct svc_req *, req); 4215 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4216 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4217 cs->exi)) { 4218 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4219 if (name != nm) 4220 kmem_free(name, MAXPATHLEN + 1); 4221 kmem_free(nm, len); 4222 if (in_crit) 4223 nbl_end_crit(vp); 4224 VN_RELE(vp); 4225 if (fp) { 4226 rfs4_clear_dont_grant(fp); 4227 rfs4_file_rele(fp); 4228 } 4229 goto out; 4230 } 4231 } 4232 } 4233 4234 /* Get dir "before" change value */ 4235 bdva.va_mask = AT_CTIME|AT_SEQ; 4236 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4237 if (error) { 4238 *cs->statusp = resp->status = puterrno4(error); 4239 if (nm != name) 4240 kmem_free(name, MAXPATHLEN + 1); 4241 kmem_free(nm, len); 4242 if (in_crit) 4243 nbl_end_crit(vp); 4244 VN_RELE(vp); 4245 if (fp) { 4246 rfs4_clear_dont_grant(fp); 4247 rfs4_file_rele(fp); 4248 } 4249 goto out; 4250 } 4251 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4252 4253 /* Actually do the REMOVE operation */ 4254 if (vp->v_type == VDIR) { 4255 /* 4256 * Can't remove a directory that has a mounted-on filesystem. 4257 */ 4258 if (vn_ismntpt(vp)) { 4259 error = EACCES; 4260 } else { 4261 /* 4262 * System V defines rmdir to return EEXIST, 4263 * not ENOTEMPTY, if the directory is not 4264 * empty. A System V NFS server needs to map 4265 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4266 * transmit over the wire. 4267 */ 4268 if ((error = VOP_RMDIR(dvp, name, ZONE_ROOTVP(), cs->cr, 4269 NULL, 0)) == EEXIST) 4270 error = ENOTEMPTY; 4271 } 4272 } else { 4273 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4274 fp != NULL) { 4275 struct vattr va; 4276 vnode_t *tvp; 4277 4278 rfs4_dbe_lock(fp->rf_dbe); 4279 tvp = fp->rf_vp; 4280 if (tvp) 4281 VN_HOLD(tvp); 4282 rfs4_dbe_unlock(fp->rf_dbe); 4283 4284 if (tvp) { 4285 /* 4286 * This is va_seq safe because we are not 4287 * manipulating dvp. 4288 */ 4289 va.va_mask = AT_NLINK; 4290 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4291 va.va_nlink == 0) { 4292 /* Remove state on file remove */ 4293 if (in_crit) { 4294 nbl_end_crit(vp); 4295 in_crit = 0; 4296 } 4297 rfs4_close_all_state(fp); 4298 } 4299 VN_RELE(tvp); 4300 } 4301 } 4302 } 4303 4304 if (in_crit) 4305 nbl_end_crit(vp); 4306 VN_RELE(vp); 4307 4308 if (fp) { 4309 rfs4_clear_dont_grant(fp); 4310 rfs4_file_rele(fp); 4311 } 4312 if (nm != name) 4313 kmem_free(name, MAXPATHLEN + 1); 4314 kmem_free(nm, len); 4315 4316 if (error) { 4317 *cs->statusp = resp->status = puterrno4(error); 4318 goto out; 4319 } 4320 4321 /* 4322 * Get the initial "after" sequence number, if it fails, set to zero 4323 */ 4324 idva.va_mask = AT_SEQ; 4325 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4326 idva.va_seq = 0; 4327 4328 /* 4329 * Force modified data and metadata out to stable storage. 4330 */ 4331 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4332 4333 /* 4334 * Get "after" change value, if it fails, simply return the 4335 * before value. 4336 */ 4337 adva.va_mask = AT_CTIME|AT_SEQ; 4338 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4339 adva.va_ctime = bdva.va_ctime; 4340 adva.va_seq = 0; 4341 } 4342 4343 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4344 4345 /* 4346 * The cinfo.atomic = TRUE only if we have 4347 * non-zero va_seq's, and it has incremented by exactly one 4348 * during the VOP_REMOVE/RMDIR and it didn't change during 4349 * the VOP_FSYNC. 4350 */ 4351 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4352 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4353 resp->cinfo.atomic = TRUE; 4354 else 4355 resp->cinfo.atomic = FALSE; 4356 4357 *cs->statusp = resp->status = NFS4_OK; 4358 4359 out: 4360 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4361 REMOVE4res *, resp); 4362 } 4363 4364 /* 4365 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4366 * oldname and newname. 4367 * res: status. If success - CURRENT_FH unchanged, return change_info 4368 * for both from and target directories. 4369 */ 4370 /* ARGSUSED */ 4371 static void 4372 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4373 struct compound_state *cs) 4374 { 4375 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4376 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4377 int error; 4378 vnode_t *odvp; 4379 vnode_t *ndvp; 4380 vnode_t *srcvp, *targvp, *tvp; 4381 struct vattr obdva, oidva, oadva; 4382 struct vattr nbdva, nidva, nadva; 4383 char *onm, *nnm; 4384 uint_t olen, nlen; 4385 rfs4_file_t *fp, *sfp; 4386 int in_crit_src, in_crit_targ; 4387 int fp_rele_grant_hold, sfp_rele_grant_hold; 4388 int unlinked; 4389 bslabel_t *clabel; 4390 struct sockaddr *ca; 4391 char *converted_onm = NULL; 4392 char *converted_nnm = NULL; 4393 nfsstat4 status; 4394 4395 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4396 RENAME4args *, args); 4397 4398 fp = sfp = NULL; 4399 srcvp = targvp = tvp = NULL; 4400 in_crit_src = in_crit_targ = 0; 4401 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4402 unlinked = 0; 4403 4404 /* CURRENT_FH: target directory */ 4405 ndvp = cs->vp; 4406 if (ndvp == NULL) { 4407 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4408 goto out; 4409 } 4410 4411 /* SAVED_FH: from directory */ 4412 odvp = cs->saved_vp; 4413 if (odvp == NULL) { 4414 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4415 goto out; 4416 } 4417 4418 if (cs->access == CS_ACCESS_DENIED) { 4419 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4420 goto out; 4421 } 4422 4423 /* 4424 * If there is an unshared filesystem mounted on this vnode, 4425 * do not allow to rename objects in this directory. 4426 */ 4427 if (vn_ismntpt(odvp)) { 4428 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4429 goto out; 4430 } 4431 4432 /* 4433 * If there is an unshared filesystem mounted on this vnode, 4434 * do not allow to rename to this directory. 4435 */ 4436 if (vn_ismntpt(ndvp)) { 4437 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4438 goto out; 4439 } 4440 4441 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4442 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4443 goto out; 4444 } 4445 4446 if (cs->saved_exi != cs->exi) { 4447 *cs->statusp = resp->status = NFS4ERR_XDEV; 4448 goto out; 4449 } 4450 4451 status = utf8_dir_verify(&args->oldname); 4452 if (status != NFS4_OK) { 4453 *cs->statusp = resp->status = status; 4454 goto out; 4455 } 4456 4457 status = utf8_dir_verify(&args->newname); 4458 if (status != NFS4_OK) { 4459 *cs->statusp = resp->status = status; 4460 goto out; 4461 } 4462 4463 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4464 if (onm == NULL) { 4465 *cs->statusp = resp->status = NFS4ERR_INVAL; 4466 goto out; 4467 } 4468 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4469 nlen = MAXPATHLEN + 1; 4470 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4471 nlen); 4472 4473 if (converted_onm == NULL) { 4474 *cs->statusp = resp->status = NFS4ERR_INVAL; 4475 kmem_free(onm, olen); 4476 goto out; 4477 } 4478 4479 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4480 if (nnm == NULL) { 4481 *cs->statusp = resp->status = NFS4ERR_INVAL; 4482 if (onm != converted_onm) 4483 kmem_free(converted_onm, MAXPATHLEN + 1); 4484 kmem_free(onm, olen); 4485 goto out; 4486 } 4487 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4488 MAXPATHLEN + 1); 4489 4490 if (converted_nnm == NULL) { 4491 *cs->statusp = resp->status = NFS4ERR_INVAL; 4492 kmem_free(nnm, nlen); 4493 nnm = NULL; 4494 if (onm != converted_onm) 4495 kmem_free(converted_onm, MAXPATHLEN + 1); 4496 kmem_free(onm, olen); 4497 goto out; 4498 } 4499 4500 4501 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4502 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4503 kmem_free(onm, olen); 4504 kmem_free(nnm, nlen); 4505 goto out; 4506 } 4507 4508 4509 if (rdonly4(req, cs)) { 4510 *cs->statusp = resp->status = NFS4ERR_ROFS; 4511 if (onm != converted_onm) 4512 kmem_free(converted_onm, MAXPATHLEN + 1); 4513 kmem_free(onm, olen); 4514 if (nnm != converted_nnm) 4515 kmem_free(converted_nnm, MAXPATHLEN + 1); 4516 kmem_free(nnm, nlen); 4517 goto out; 4518 } 4519 4520 /* check label of the target dir */ 4521 if (is_system_labeled()) { 4522 ASSERT(req->rq_label != NULL); 4523 clabel = req->rq_label; 4524 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4525 "got client label from request(1)", 4526 struct svc_req *, req); 4527 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4528 if (!do_rfs_label_check(clabel, ndvp, 4529 EQUALITY_CHECK, cs->exi)) { 4530 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4531 goto err_out; 4532 } 4533 } 4534 } 4535 4536 /* 4537 * Is the source a file and have a delegation? 4538 * We don't need to acquire va_seq before these lookups, if 4539 * it causes an update, cinfo.before will not match, which will 4540 * trigger a cache flush even if atomic is TRUE. 4541 */ 4542 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4543 &error, cs->cr)) { 4544 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4545 NULL)) { 4546 *cs->statusp = resp->status = NFS4ERR_DELAY; 4547 goto err_out; 4548 } 4549 } 4550 4551 if (srcvp == NULL) { 4552 *cs->statusp = resp->status = puterrno4(error); 4553 if (onm != converted_onm) 4554 kmem_free(converted_onm, MAXPATHLEN + 1); 4555 kmem_free(onm, olen); 4556 if (nnm != converted_nnm) 4557 kmem_free(converted_nnm, MAXPATHLEN + 1); 4558 kmem_free(nnm, nlen); 4559 goto out; 4560 } 4561 4562 sfp_rele_grant_hold = 1; 4563 4564 /* Does the destination exist and a file and have a delegation? */ 4565 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4566 NULL, cs->cr)) { 4567 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4568 NULL)) { 4569 *cs->statusp = resp->status = NFS4ERR_DELAY; 4570 goto err_out; 4571 } 4572 } 4573 fp_rele_grant_hold = 1; 4574 4575 /* Check for NBMAND lock on both source and target */ 4576 if (nbl_need_check(srcvp)) { 4577 nbl_start_crit(srcvp, RW_READER); 4578 in_crit_src = 1; 4579 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4580 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4581 goto err_out; 4582 } 4583 } 4584 4585 if (targvp && nbl_need_check(targvp)) { 4586 nbl_start_crit(targvp, RW_READER); 4587 in_crit_targ = 1; 4588 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4589 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4590 goto err_out; 4591 } 4592 } 4593 4594 /* Get source "before" change value */ 4595 obdva.va_mask = AT_CTIME|AT_SEQ; 4596 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4597 if (!error) { 4598 nbdva.va_mask = AT_CTIME|AT_SEQ; 4599 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4600 } 4601 if (error) { 4602 *cs->statusp = resp->status = puterrno4(error); 4603 goto err_out; 4604 } 4605 4606 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4607 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4608 4609 error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, cs->cr, 4610 NULL, 0); 4611 4612 /* 4613 * If target existed and was unlinked by VOP_RENAME, state will need 4614 * closed. To avoid deadlock, rfs4_close_all_state will be done after 4615 * any necessary nbl_end_crit on srcvp and tgtvp. 4616 */ 4617 if (error == 0 && fp != NULL) { 4618 rfs4_dbe_lock(fp->rf_dbe); 4619 tvp = fp->rf_vp; 4620 if (tvp) 4621 VN_HOLD(tvp); 4622 rfs4_dbe_unlock(fp->rf_dbe); 4623 4624 if (tvp) { 4625 struct vattr va; 4626 va.va_mask = AT_NLINK; 4627 4628 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4629 va.va_nlink == 0) { 4630 unlinked = 1; 4631 4632 /* DEBUG data */ 4633 if ((srcvp == targvp) || (tvp != targvp)) { 4634 cmn_err(CE_WARN, "rfs4_op_rename: " 4635 "srcvp %p, targvp: %p, tvp: %p", 4636 (void *)srcvp, (void *)targvp, 4637 (void *)tvp); 4638 } 4639 } else { 4640 VN_RELE(tvp); 4641 } 4642 } 4643 } 4644 if (error == 0) 4645 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4646 4647 if (in_crit_src) 4648 nbl_end_crit(srcvp); 4649 if (srcvp) 4650 VN_RELE(srcvp); 4651 if (in_crit_targ) 4652 nbl_end_crit(targvp); 4653 if (targvp) 4654 VN_RELE(targvp); 4655 4656 if (unlinked) { 4657 ASSERT(fp != NULL); 4658 ASSERT(tvp != NULL); 4659 4660 /* DEBUG data */ 4661 if (RW_READ_HELD(&tvp->v_nbllock)) { 4662 cmn_err(CE_WARN, "rfs4_op_rename: " 4663 "RW_READ_HELD(%p)", (void *)tvp); 4664 } 4665 4666 /* The file is gone and so should the state */ 4667 rfs4_close_all_state(fp); 4668 VN_RELE(tvp); 4669 } 4670 4671 if (sfp) { 4672 rfs4_clear_dont_grant(sfp); 4673 rfs4_file_rele(sfp); 4674 } 4675 if (fp) { 4676 rfs4_clear_dont_grant(fp); 4677 rfs4_file_rele(fp); 4678 } 4679 4680 if (converted_onm != onm) 4681 kmem_free(converted_onm, MAXPATHLEN + 1); 4682 kmem_free(onm, olen); 4683 if (converted_nnm != nnm) 4684 kmem_free(converted_nnm, MAXPATHLEN + 1); 4685 kmem_free(nnm, nlen); 4686 4687 /* 4688 * Get the initial "after" sequence number, if it fails, set to zero 4689 */ 4690 oidva.va_mask = AT_SEQ; 4691 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4692 oidva.va_seq = 0; 4693 4694 nidva.va_mask = AT_SEQ; 4695 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4696 nidva.va_seq = 0; 4697 4698 /* 4699 * Force modified data and metadata out to stable storage. 4700 */ 4701 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4702 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4703 4704 if (error) { 4705 *cs->statusp = resp->status = puterrno4(error); 4706 goto out; 4707 } 4708 4709 /* 4710 * Get "after" change values, if it fails, simply return the 4711 * before value. 4712 */ 4713 oadva.va_mask = AT_CTIME|AT_SEQ; 4714 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4715 oadva.va_ctime = obdva.va_ctime; 4716 oadva.va_seq = 0; 4717 } 4718 4719 nadva.va_mask = AT_CTIME|AT_SEQ; 4720 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4721 nadva.va_ctime = nbdva.va_ctime; 4722 nadva.va_seq = 0; 4723 } 4724 4725 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4726 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4727 4728 /* 4729 * The cinfo.atomic = TRUE only if we have 4730 * non-zero va_seq's, and it has incremented by exactly one 4731 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4732 */ 4733 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4734 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4735 resp->source_cinfo.atomic = TRUE; 4736 else 4737 resp->source_cinfo.atomic = FALSE; 4738 4739 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4740 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4741 resp->target_cinfo.atomic = TRUE; 4742 else 4743 resp->target_cinfo.atomic = FALSE; 4744 4745 #ifdef VOLATILE_FH_TEST 4746 { 4747 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4748 4749 /* 4750 * Add the renamed file handle to the volatile rename list 4751 */ 4752 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4753 /* file handles may expire on rename */ 4754 vnode_t *vp; 4755 4756 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4757 /* 4758 * Already know that nnm will be a valid string 4759 */ 4760 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4761 NULL, NULL, NULL); 4762 kmem_free(nnm, nlen); 4763 if (!error) { 4764 add_volrnm_fh(cs->exi, vp); 4765 VN_RELE(vp); 4766 } 4767 } 4768 } 4769 #endif /* VOLATILE_FH_TEST */ 4770 4771 *cs->statusp = resp->status = NFS4_OK; 4772 out: 4773 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4774 RENAME4res *, resp); 4775 return; 4776 4777 err_out: 4778 if (onm != converted_onm) 4779 kmem_free(converted_onm, MAXPATHLEN + 1); 4780 if (onm != NULL) 4781 kmem_free(onm, olen); 4782 if (nnm != converted_nnm) 4783 kmem_free(converted_nnm, MAXPATHLEN + 1); 4784 if (nnm != NULL) 4785 kmem_free(nnm, nlen); 4786 4787 if (in_crit_src) nbl_end_crit(srcvp); 4788 if (in_crit_targ) nbl_end_crit(targvp); 4789 if (targvp) VN_RELE(targvp); 4790 if (srcvp) VN_RELE(srcvp); 4791 if (sfp) { 4792 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4793 rfs4_file_rele(sfp); 4794 } 4795 if (fp) { 4796 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4797 rfs4_file_rele(fp); 4798 } 4799 4800 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4801 RENAME4res *, resp); 4802 } 4803 4804 /* ARGSUSED */ 4805 static void 4806 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4807 struct compound_state *cs) 4808 { 4809 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4810 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4811 rfs4_client_t *cp; 4812 4813 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4814 RENEW4args *, args); 4815 4816 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4817 *cs->statusp = resp->status = 4818 rfs4_check_clientid(&args->clientid, 0); 4819 goto out; 4820 } 4821 4822 if (rfs4_lease_expired(cp)) { 4823 rfs4_client_rele(cp); 4824 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4825 goto out; 4826 } 4827 4828 rfs4_update_lease(cp); 4829 4830 mutex_enter(cp->rc_cbinfo.cb_lock); 4831 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 4832 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 4833 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4834 } else { 4835 *cs->statusp = resp->status = NFS4_OK; 4836 } 4837 mutex_exit(cp->rc_cbinfo.cb_lock); 4838 4839 rfs4_client_rele(cp); 4840 4841 out: 4842 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4843 RENEW4res *, resp); 4844 } 4845 4846 /* ARGSUSED */ 4847 static void 4848 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4849 struct compound_state *cs) 4850 { 4851 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4852 4853 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4854 4855 /* No need to check cs->access - we are not accessing any object */ 4856 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4857 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4858 goto out; 4859 } 4860 if (cs->vp != NULL) { 4861 VN_RELE(cs->vp); 4862 } 4863 cs->vp = cs->saved_vp; 4864 cs->saved_vp = NULL; 4865 cs->exi = cs->saved_exi; 4866 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4867 *cs->statusp = resp->status = NFS4_OK; 4868 cs->deleg = FALSE; 4869 4870 out: 4871 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4872 RESTOREFH4res *, resp); 4873 } 4874 4875 /* ARGSUSED */ 4876 static void 4877 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4878 struct compound_state *cs) 4879 { 4880 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4881 4882 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4883 4884 /* No need to check cs->access - we are not accessing any object */ 4885 if (cs->vp == NULL) { 4886 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4887 goto out; 4888 } 4889 if (cs->saved_vp != NULL) { 4890 VN_RELE(cs->saved_vp); 4891 } 4892 cs->saved_vp = cs->vp; 4893 VN_HOLD(cs->saved_vp); 4894 cs->saved_exi = cs->exi; 4895 /* 4896 * since SAVEFH is fairly rare, don't alloc space for its fh 4897 * unless necessary. 4898 */ 4899 if (cs->saved_fh.nfs_fh4_val == NULL) { 4900 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4901 } 4902 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4903 *cs->statusp = resp->status = NFS4_OK; 4904 4905 out: 4906 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4907 SAVEFH4res *, resp); 4908 } 4909 4910 /* 4911 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4912 * return the bitmap of attrs that were set successfully. It is also 4913 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4914 * always be called only after rfs4_do_set_attrs(). 4915 * 4916 * Verify that the attributes are same as the expected ones. sargp->vap 4917 * and sargp->sbp contain the input attributes as translated from fattr4. 4918 * 4919 * This function verifies only the attrs that correspond to a vattr or 4920 * vfsstat struct. That is because of the extra step needed to get the 4921 * corresponding system structs. Other attributes have already been set or 4922 * verified by do_rfs4_set_attrs. 4923 * 4924 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4925 */ 4926 static int 4927 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4928 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4929 { 4930 int error, ret_error = 0; 4931 int i, k; 4932 uint_t sva_mask = sargp->vap->va_mask; 4933 uint_t vbit; 4934 union nfs4_attr_u *na; 4935 uint8_t *amap; 4936 bool_t getsb = ntovp->vfsstat; 4937 4938 if (sva_mask != 0) { 4939 /* 4940 * Okay to overwrite sargp->vap because we verify based 4941 * on the incoming values. 4942 */ 4943 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4944 sargp->cs->cr, NULL); 4945 if (ret_error) { 4946 if (resp == NULL) 4947 return (ret_error); 4948 /* 4949 * Must return bitmap of successful attrs 4950 */ 4951 sva_mask = 0; /* to prevent checking vap later */ 4952 } else { 4953 /* 4954 * Some file systems clobber va_mask. it is probably 4955 * wrong of them to do so, nonethless we practice 4956 * defensive coding. 4957 * See bug id 4276830. 4958 */ 4959 sargp->vap->va_mask = sva_mask; 4960 } 4961 } 4962 4963 if (getsb) { 4964 /* 4965 * Now get the superblock and loop on the bitmap, as there is 4966 * no simple way of translating from superblock to bitmap4. 4967 */ 4968 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4969 if (ret_error) { 4970 if (resp == NULL) 4971 goto errout; 4972 getsb = FALSE; 4973 } 4974 } 4975 4976 /* 4977 * Now loop and verify each attribute which getattr returned 4978 * whether it's the same as the input. 4979 */ 4980 if (resp == NULL && !getsb && (sva_mask == 0)) 4981 goto errout; 4982 4983 na = ntovp->na; 4984 amap = ntovp->amap; 4985 k = 0; 4986 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4987 k = *amap; 4988 ASSERT(nfs4_ntov_map[k].nval == k); 4989 vbit = nfs4_ntov_map[k].vbit; 4990 4991 /* 4992 * If vattr attribute but VOP_GETATTR failed, or it's 4993 * superblock attribute but VFS_STATVFS failed, skip 4994 */ 4995 if (vbit) { 4996 if ((vbit & sva_mask) == 0) 4997 continue; 4998 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4999 continue; 5000 } 5001 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 5002 if (resp != NULL) { 5003 if (error) 5004 ret_error = -1; /* not all match */ 5005 else /* update response bitmap */ 5006 *resp |= nfs4_ntov_map[k].fbit; 5007 continue; 5008 } 5009 if (error) { 5010 ret_error = -1; /* not all match */ 5011 break; 5012 } 5013 } 5014 errout: 5015 return (ret_error); 5016 } 5017 5018 /* 5019 * Decode the attribute to be set/verified. If the attr requires a sys op 5020 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 5021 * call the sv_getit function for it, because the sys op hasn't yet been done. 5022 * Return 0 for success, error code if failed. 5023 * 5024 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 5025 */ 5026 static int 5027 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 5028 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 5029 { 5030 int error = 0; 5031 bool_t set_later; 5032 5033 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 5034 5035 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 5036 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 5037 /* 5038 * don't verify yet if a vattr or sb dependent attr, 5039 * because we don't have their sys values yet. 5040 * Will be done later. 5041 */ 5042 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 5043 /* 5044 * ACLs are a special case, since setting the MODE 5045 * conflicts with setting the ACL. We delay setting 5046 * the ACL until all other attributes have been set. 5047 * The ACL gets set in do_rfs4_op_setattr(). 5048 */ 5049 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5050 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5051 sargp, nap); 5052 if (error) { 5053 xdr_free(nfs4_ntov_map[k].xfunc, 5054 (caddr_t)nap); 5055 } 5056 } 5057 } 5058 } else { 5059 #ifdef DEBUG 5060 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5061 "decoding attribute %d\n", k); 5062 #endif 5063 error = EINVAL; 5064 } 5065 if (!error && resp_bval && !set_later) { 5066 *resp_bval |= nfs4_ntov_map[k].fbit; 5067 } 5068 5069 return (error); 5070 } 5071 5072 /* 5073 * Set vattr based on incoming fattr4 attrs - used by setattr. 5074 * Set response mask. Ignore any values that are not writable vattr attrs. 5075 */ 5076 static nfsstat4 5077 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5078 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5079 nfs4_attr_cmd_t cmd) 5080 { 5081 int error = 0; 5082 int i; 5083 char *attrs = fattrp->attrlist4; 5084 uint32_t attrslen = fattrp->attrlist4_len; 5085 XDR xdr; 5086 nfsstat4 status = NFS4_OK; 5087 vnode_t *vp = cs->vp; 5088 union nfs4_attr_u *na; 5089 uint8_t *amap; 5090 5091 #ifndef lint 5092 /* 5093 * Make sure that maximum attribute number can be expressed as an 5094 * 8 bit quantity. 5095 */ 5096 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5097 #endif 5098 5099 if (vp == NULL) { 5100 if (resp) 5101 *resp = 0; 5102 return (NFS4ERR_NOFILEHANDLE); 5103 } 5104 if (cs->access == CS_ACCESS_DENIED) { 5105 if (resp) 5106 *resp = 0; 5107 return (NFS4ERR_ACCESS); 5108 } 5109 5110 sargp->op = cmd; 5111 sargp->cs = cs; 5112 sargp->flag = 0; /* may be set later */ 5113 sargp->vap->va_mask = 0; 5114 sargp->rdattr_error = NFS4_OK; 5115 sargp->rdattr_error_req = FALSE; 5116 /* sargp->sbp is set by the caller */ 5117 5118 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5119 5120 na = ntovp->na; 5121 amap = ntovp->amap; 5122 5123 /* 5124 * The following loop iterates on the nfs4_ntov_map checking 5125 * if the fbit is set in the requested bitmap. 5126 * If set then we process the arguments using the 5127 * rfs4_fattr4 conversion functions to populate the setattr 5128 * vattr and va_mask. Any settable attrs that are not using vattr 5129 * will be set in this loop. 5130 */ 5131 for (i = 0; i < nfs4_ntov_map_size; i++) { 5132 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5133 continue; 5134 } 5135 /* 5136 * If setattr, must be a writable attr. 5137 * If verify/nverify, must be a readable attr. 5138 */ 5139 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5140 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5141 /* 5142 * Client tries to set/verify an 5143 * unsupported attribute, tries to set 5144 * a read only attr or verify a write 5145 * only one - error! 5146 */ 5147 break; 5148 } 5149 /* 5150 * Decode the attribute to set/verify 5151 */ 5152 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5153 &xdr, resp ? resp : NULL, na); 5154 if (error) 5155 break; 5156 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5157 na++; 5158 (ntovp->attrcnt)++; 5159 if (nfs4_ntov_map[i].vfsstat) 5160 ntovp->vfsstat = TRUE; 5161 } 5162 5163 if (error != 0) 5164 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5165 puterrno4(error)); 5166 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5167 return (status); 5168 } 5169 5170 static nfsstat4 5171 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5172 stateid4 *stateid) 5173 { 5174 int error = 0; 5175 struct nfs4_svgetit_arg sarg; 5176 bool_t trunc; 5177 5178 nfsstat4 status = NFS4_OK; 5179 cred_t *cr = cs->cr; 5180 vnode_t *vp = cs->vp; 5181 struct nfs4_ntov_table ntov; 5182 struct statvfs64 sb; 5183 struct vattr bva; 5184 struct flock64 bf; 5185 int in_crit = 0; 5186 uint_t saved_mask = 0; 5187 caller_context_t ct; 5188 5189 *resp = 0; 5190 sarg.sbp = &sb; 5191 sarg.is_referral = B_FALSE; 5192 nfs4_ntov_table_init(&ntov); 5193 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5194 NFS4ATTR_SETIT); 5195 if (status != NFS4_OK) { 5196 /* 5197 * failed set attrs 5198 */ 5199 goto done; 5200 } 5201 if ((sarg.vap->va_mask == 0) && 5202 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5203 /* 5204 * no further work to be done 5205 */ 5206 goto done; 5207 } 5208 5209 /* 5210 * If we got a request to set the ACL and the MODE, only 5211 * allow changing VSUID, VSGID, and VSVTX. Attempting 5212 * to change any other bits, along with setting an ACL, 5213 * gives NFS4ERR_INVAL. 5214 */ 5215 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5216 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5217 vattr_t va; 5218 5219 va.va_mask = AT_MODE; 5220 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5221 if (error) { 5222 status = puterrno4(error); 5223 goto done; 5224 } 5225 if ((sarg.vap->va_mode ^ va.va_mode) & 5226 ~(VSUID | VSGID | VSVTX)) { 5227 status = NFS4ERR_INVAL; 5228 goto done; 5229 } 5230 } 5231 5232 /* Check stateid only if size has been set */ 5233 if (sarg.vap->va_mask & AT_SIZE) { 5234 trunc = (sarg.vap->va_size == 0); 5235 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5236 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5237 if (status != NFS4_OK) 5238 goto done; 5239 } else { 5240 ct.cc_sysid = 0; 5241 ct.cc_pid = 0; 5242 ct.cc_caller_id = nfs4_srv_caller_id; 5243 ct.cc_flags = CC_DONTBLOCK; 5244 } 5245 5246 /* XXX start of possible race with delegations */ 5247 5248 /* 5249 * We need to specially handle size changes because it is 5250 * possible for the client to create a file with read-only 5251 * modes, but with the file opened for writing. If the client 5252 * then tries to set the file size, e.g. ftruncate(3C), 5253 * fcntl(F_FREESP), the normal access checking done in 5254 * VOP_SETATTR would prevent the client from doing it even though 5255 * it should be allowed to do so. To get around this, we do the 5256 * access checking for ourselves and use VOP_SPACE which doesn't 5257 * do the access checking. 5258 * Also the client should not be allowed to change the file 5259 * size if there is a conflicting non-blocking mandatory lock in 5260 * the region of the change. 5261 */ 5262 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5263 u_offset_t offset; 5264 ssize_t length; 5265 5266 /* 5267 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5268 * before returning, sarg.vap->va_mask is used to 5269 * generate the setattr reply bitmap. We also clear 5270 * AT_SIZE below before calling VOP_SPACE. For both 5271 * of these cases, the va_mask needs to be saved here 5272 * and restored after calling VOP_SETATTR. 5273 */ 5274 saved_mask = sarg.vap->va_mask; 5275 5276 /* 5277 * Check any possible conflict due to NBMAND locks. 5278 * Get into critical region before VOP_GETATTR, so the 5279 * size attribute is valid when checking conflicts. 5280 */ 5281 if (nbl_need_check(vp)) { 5282 nbl_start_crit(vp, RW_READER); 5283 in_crit = 1; 5284 } 5285 5286 bva.va_mask = AT_UID|AT_SIZE; 5287 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5288 status = puterrno4(error); 5289 goto done; 5290 } 5291 5292 if (in_crit) { 5293 if (sarg.vap->va_size < bva.va_size) { 5294 offset = sarg.vap->va_size; 5295 length = bva.va_size - sarg.vap->va_size; 5296 } else { 5297 offset = bva.va_size; 5298 length = sarg.vap->va_size - bva.va_size; 5299 } 5300 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5301 &ct)) { 5302 status = NFS4ERR_LOCKED; 5303 goto done; 5304 } 5305 } 5306 5307 if (crgetuid(cr) == bva.va_uid) { 5308 sarg.vap->va_mask &= ~AT_SIZE; 5309 bf.l_type = F_WRLCK; 5310 bf.l_whence = 0; 5311 bf.l_start = (off64_t)sarg.vap->va_size; 5312 bf.l_len = 0; 5313 bf.l_sysid = 0; 5314 bf.l_pid = 0; 5315 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5316 (offset_t)sarg.vap->va_size, cr, &ct); 5317 } 5318 } 5319 5320 if (!error && sarg.vap->va_mask != 0) 5321 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5322 5323 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5324 if (saved_mask & AT_SIZE) 5325 sarg.vap->va_mask |= AT_SIZE; 5326 5327 /* 5328 * If an ACL was being set, it has been delayed until now, 5329 * in order to set the mode (via the VOP_SETATTR() above) first. 5330 */ 5331 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5332 int i; 5333 5334 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5335 if (ntov.amap[i] == FATTR4_ACL) 5336 break; 5337 if (i < NFS4_MAXNUM_ATTRS) { 5338 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5339 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5340 if (error == 0) { 5341 *resp |= FATTR4_ACL_MASK; 5342 } else if (error == ENOTSUP) { 5343 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5344 status = NFS4ERR_ATTRNOTSUPP; 5345 goto done; 5346 } 5347 } else { 5348 NFS4_DEBUG(rfs4_debug, 5349 (CE_NOTE, "do_rfs4_op_setattr: " 5350 "unable to find ACL in fattr4")); 5351 error = EINVAL; 5352 } 5353 } 5354 5355 if (error) { 5356 /* check if a monitor detected a delegation conflict */ 5357 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5358 status = NFS4ERR_DELAY; 5359 else 5360 status = puterrno4(error); 5361 5362 /* 5363 * Set the response bitmap when setattr failed. 5364 * If VOP_SETATTR partially succeeded, test by doing a 5365 * VOP_GETATTR on the object and comparing the data 5366 * to the setattr arguments. 5367 */ 5368 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5369 } else { 5370 /* 5371 * Force modified metadata out to stable storage. 5372 */ 5373 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5374 /* 5375 * Set response bitmap 5376 */ 5377 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5378 } 5379 5380 /* Return early and already have a NFSv4 error */ 5381 done: 5382 /* 5383 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5384 * conversion sets both readable and writeable NFS4 attrs 5385 * for AT_MTIME and AT_ATIME. The line below masks out 5386 * unrequested attrs from the setattr result bitmap. This 5387 * is placed after the done: label to catch the ATTRNOTSUP 5388 * case. 5389 */ 5390 *resp &= fattrp->attrmask; 5391 5392 if (in_crit) 5393 nbl_end_crit(vp); 5394 5395 nfs4_ntov_table_free(&ntov, &sarg); 5396 5397 return (status); 5398 } 5399 5400 /* ARGSUSED */ 5401 static void 5402 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5403 struct compound_state *cs) 5404 { 5405 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5406 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5407 bslabel_t *clabel; 5408 5409 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5410 SETATTR4args *, args); 5411 5412 if (cs->vp == NULL) { 5413 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5414 goto out; 5415 } 5416 5417 /* 5418 * If there is an unshared filesystem mounted on this vnode, 5419 * do not allow to setattr on this vnode. 5420 */ 5421 if (vn_ismntpt(cs->vp)) { 5422 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5423 goto out; 5424 } 5425 5426 resp->attrsset = 0; 5427 5428 if (rdonly4(req, cs)) { 5429 *cs->statusp = resp->status = NFS4ERR_ROFS; 5430 goto out; 5431 } 5432 5433 /* check label before setting attributes */ 5434 if (is_system_labeled()) { 5435 ASSERT(req->rq_label != NULL); 5436 clabel = req->rq_label; 5437 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5438 "got client label from request(1)", 5439 struct svc_req *, req); 5440 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5441 if (!do_rfs_label_check(clabel, cs->vp, 5442 EQUALITY_CHECK, cs->exi)) { 5443 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5444 goto out; 5445 } 5446 } 5447 } 5448 5449 *cs->statusp = resp->status = 5450 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5451 &args->stateid); 5452 5453 out: 5454 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5455 SETATTR4res *, resp); 5456 } 5457 5458 /* ARGSUSED */ 5459 static void 5460 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5461 struct compound_state *cs) 5462 { 5463 /* 5464 * verify and nverify are exactly the same, except that nverify 5465 * succeeds when some argument changed, and verify succeeds when 5466 * when none changed. 5467 */ 5468 5469 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5470 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5471 5472 int error; 5473 struct nfs4_svgetit_arg sarg; 5474 struct statvfs64 sb; 5475 struct nfs4_ntov_table ntov; 5476 5477 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5478 VERIFY4args *, args); 5479 5480 if (cs->vp == NULL) { 5481 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5482 goto out; 5483 } 5484 5485 sarg.sbp = &sb; 5486 sarg.is_referral = B_FALSE; 5487 nfs4_ntov_table_init(&ntov); 5488 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5489 &sarg, &ntov, NFS4ATTR_VERIT); 5490 if (resp->status != NFS4_OK) { 5491 /* 5492 * do_rfs4_set_attrs will try to verify systemwide attrs, 5493 * so could return -1 for "no match". 5494 */ 5495 if (resp->status == -1) 5496 resp->status = NFS4ERR_NOT_SAME; 5497 goto done; 5498 } 5499 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5500 switch (error) { 5501 case 0: 5502 resp->status = NFS4_OK; 5503 break; 5504 case -1: 5505 resp->status = NFS4ERR_NOT_SAME; 5506 break; 5507 default: 5508 resp->status = puterrno4(error); 5509 break; 5510 } 5511 done: 5512 *cs->statusp = resp->status; 5513 nfs4_ntov_table_free(&ntov, &sarg); 5514 out: 5515 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5516 VERIFY4res *, resp); 5517 } 5518 5519 /* ARGSUSED */ 5520 static void 5521 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5522 struct compound_state *cs) 5523 { 5524 /* 5525 * verify and nverify are exactly the same, except that nverify 5526 * succeeds when some argument changed, and verify succeeds when 5527 * when none changed. 5528 */ 5529 5530 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5531 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5532 5533 int error; 5534 struct nfs4_svgetit_arg sarg; 5535 struct statvfs64 sb; 5536 struct nfs4_ntov_table ntov; 5537 5538 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5539 NVERIFY4args *, args); 5540 5541 if (cs->vp == NULL) { 5542 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5543 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5544 NVERIFY4res *, resp); 5545 return; 5546 } 5547 sarg.sbp = &sb; 5548 sarg.is_referral = B_FALSE; 5549 nfs4_ntov_table_init(&ntov); 5550 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5551 &sarg, &ntov, NFS4ATTR_VERIT); 5552 if (resp->status != NFS4_OK) { 5553 /* 5554 * do_rfs4_set_attrs will try to verify systemwide attrs, 5555 * so could return -1 for "no match". 5556 */ 5557 if (resp->status == -1) 5558 resp->status = NFS4_OK; 5559 goto done; 5560 } 5561 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5562 switch (error) { 5563 case 0: 5564 resp->status = NFS4ERR_SAME; 5565 break; 5566 case -1: 5567 resp->status = NFS4_OK; 5568 break; 5569 default: 5570 resp->status = puterrno4(error); 5571 break; 5572 } 5573 done: 5574 *cs->statusp = resp->status; 5575 nfs4_ntov_table_free(&ntov, &sarg); 5576 5577 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5578 NVERIFY4res *, resp); 5579 } 5580 5581 /* 5582 * XXX - This should live in an NFS header file. 5583 */ 5584 #define MAX_IOVECS 12 5585 5586 /* ARGSUSED */ 5587 static void 5588 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5589 struct compound_state *cs) 5590 { 5591 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5592 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5593 int error; 5594 vnode_t *vp; 5595 struct vattr bva; 5596 u_offset_t rlimit; 5597 struct uio uio; 5598 struct iovec iov[MAX_IOVECS]; 5599 struct iovec *iovp; 5600 int iovcnt; 5601 int ioflag; 5602 cred_t *savecred, *cr; 5603 bool_t *deleg = &cs->deleg; 5604 nfsstat4 stat; 5605 int in_crit = 0; 5606 caller_context_t ct; 5607 nfs4_srv_t *nsrv4; 5608 5609 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5610 WRITE4args *, args); 5611 5612 vp = cs->vp; 5613 if (vp == NULL) { 5614 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5615 goto out; 5616 } 5617 if (cs->access == CS_ACCESS_DENIED) { 5618 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5619 goto out; 5620 } 5621 5622 cr = cs->cr; 5623 5624 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5625 deleg, TRUE, &ct)) != NFS4_OK) { 5626 *cs->statusp = resp->status = stat; 5627 goto out; 5628 } 5629 5630 /* 5631 * We have to enter the critical region before calling VOP_RWLOCK 5632 * to avoid a deadlock with ufs. 5633 */ 5634 if (nbl_need_check(vp)) { 5635 nbl_start_crit(vp, RW_READER); 5636 in_crit = 1; 5637 if (nbl_conflict(vp, NBL_WRITE, 5638 args->offset, args->data_len, 0, &ct)) { 5639 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5640 goto out; 5641 } 5642 } 5643 5644 bva.va_mask = AT_MODE | AT_UID; 5645 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5646 5647 /* 5648 * If we can't get the attributes, then we can't do the 5649 * right access checking. So, we'll fail the request. 5650 */ 5651 if (error) { 5652 *cs->statusp = resp->status = puterrno4(error); 5653 goto out; 5654 } 5655 5656 if (rdonly4(req, cs)) { 5657 *cs->statusp = resp->status = NFS4ERR_ROFS; 5658 goto out; 5659 } 5660 5661 if (vp->v_type != VREG) { 5662 *cs->statusp = resp->status = 5663 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5664 goto out; 5665 } 5666 5667 if (crgetuid(cr) != bva.va_uid && 5668 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5669 *cs->statusp = resp->status = puterrno4(error); 5670 goto out; 5671 } 5672 5673 if (MANDLOCK(vp, bva.va_mode)) { 5674 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5675 goto out; 5676 } 5677 5678 nsrv4 = nfs4_get_srv(); 5679 if (args->data_len == 0) { 5680 *cs->statusp = resp->status = NFS4_OK; 5681 resp->count = 0; 5682 resp->committed = args->stable; 5683 resp->writeverf = nsrv4->write4verf; 5684 goto out; 5685 } 5686 5687 if (args->mblk != NULL) { 5688 mblk_t *m; 5689 uint_t bytes, round_len; 5690 5691 iovcnt = 0; 5692 bytes = 0; 5693 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5694 for (m = args->mblk; 5695 m != NULL && bytes < round_len; 5696 m = m->b_cont) { 5697 iovcnt++; 5698 bytes += MBLKL(m); 5699 } 5700 #ifdef DEBUG 5701 /* should have ended on an mblk boundary */ 5702 if (bytes != round_len) { 5703 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5704 bytes, round_len, args->data_len); 5705 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5706 (void *)args->mblk, (void *)m); 5707 ASSERT(bytes == round_len); 5708 } 5709 #endif 5710 if (iovcnt <= MAX_IOVECS) { 5711 iovp = iov; 5712 } else { 5713 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5714 } 5715 mblk_to_iov(args->mblk, iovcnt, iovp); 5716 } else if (args->rlist != NULL) { 5717 iovcnt = 1; 5718 iovp = iov; 5719 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5720 iovp->iov_len = args->data_len; 5721 } else { 5722 iovcnt = 1; 5723 iovp = iov; 5724 iovp->iov_base = args->data_val; 5725 iovp->iov_len = args->data_len; 5726 } 5727 5728 uio.uio_iov = iovp; 5729 uio.uio_iovcnt = iovcnt; 5730 5731 uio.uio_segflg = UIO_SYSSPACE; 5732 uio.uio_extflg = UIO_COPY_DEFAULT; 5733 uio.uio_loffset = args->offset; 5734 uio.uio_resid = args->data_len; 5735 uio.uio_llimit = curproc->p_fsz_ctl; 5736 rlimit = uio.uio_llimit - args->offset; 5737 if (rlimit < (u_offset_t)uio.uio_resid) 5738 uio.uio_resid = (int)rlimit; 5739 5740 if (args->stable == UNSTABLE4) 5741 ioflag = 0; 5742 else if (args->stable == FILE_SYNC4) 5743 ioflag = FSYNC; 5744 else if (args->stable == DATA_SYNC4) 5745 ioflag = FDSYNC; 5746 else { 5747 if (iovp != iov) 5748 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5749 *cs->statusp = resp->status = NFS4ERR_INVAL; 5750 goto out; 5751 } 5752 5753 /* 5754 * We're changing creds because VM may fault and we need 5755 * the cred of the current thread to be used if quota 5756 * checking is enabled. 5757 */ 5758 savecred = curthread->t_cred; 5759 curthread->t_cred = cr; 5760 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5761 curthread->t_cred = savecred; 5762 5763 if (iovp != iov) 5764 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5765 5766 if (error) { 5767 *cs->statusp = resp->status = puterrno4(error); 5768 goto out; 5769 } 5770 5771 *cs->statusp = resp->status = NFS4_OK; 5772 resp->count = args->data_len - uio.uio_resid; 5773 5774 if (ioflag == 0) 5775 resp->committed = UNSTABLE4; 5776 else 5777 resp->committed = FILE_SYNC4; 5778 5779 resp->writeverf = nsrv4->write4verf; 5780 5781 out: 5782 if (in_crit) 5783 nbl_end_crit(vp); 5784 5785 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5786 WRITE4res *, resp); 5787 } 5788 5789 5790 /* XXX put in a header file */ 5791 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5792 5793 void 5794 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5795 struct svc_req *req, cred_t *cr, int *rv) 5796 { 5797 uint_t i; 5798 struct compound_state cs; 5799 nfs4_srv_t *nsrv4; 5800 nfs_export_t *ne = nfs_get_export(); 5801 5802 if (rv != NULL) 5803 *rv = 0; 5804 rfs4_init_compound_state(&cs); 5805 /* 5806 * Form a reply tag by copying over the request tag. 5807 */ 5808 resp->tag.utf8string_len = args->tag.utf8string_len; 5809 if (args->tag.utf8string_len != 0) { 5810 resp->tag.utf8string_val = 5811 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5812 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5813 resp->tag.utf8string_len); 5814 } else { 5815 resp->tag.utf8string_val = NULL; 5816 } 5817 5818 cs.statusp = &resp->status; 5819 cs.req = req; 5820 resp->array = NULL; 5821 resp->array_len = 0; 5822 5823 /* 5824 * XXX for now, minorversion should be zero 5825 */ 5826 if (args->minorversion != NFS4_MINORVERSION) { 5827 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5828 &cs, COMPOUND4args *, args); 5829 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5830 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5831 &cs, COMPOUND4res *, resp); 5832 return; 5833 } 5834 5835 if (args->array_len == 0) { 5836 resp->status = NFS4_OK; 5837 return; 5838 } 5839 5840 ASSERT(exi == NULL); 5841 ASSERT(cr == NULL); 5842 5843 cr = crget(); 5844 ASSERT(cr != NULL); 5845 5846 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5847 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5848 &cs, COMPOUND4args *, args); 5849 crfree(cr); 5850 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5851 &cs, COMPOUND4res *, resp); 5852 svcerr_badcred(req->rq_xprt); 5853 if (rv != NULL) 5854 *rv = 1; 5855 return; 5856 } 5857 resp->array_len = args->array_len; 5858 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5859 KM_SLEEP); 5860 5861 cs.basecr = cr; 5862 nsrv4 = nfs4_get_srv(); 5863 5864 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5865 COMPOUND4args *, args); 5866 5867 /* 5868 * For now, NFS4 compound processing must be protected by 5869 * exported_lock because it can access more than one exportinfo 5870 * per compound and share/unshare can now change multiple 5871 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5872 * per proc (excluding public exinfo), and exi_count design 5873 * is sufficient to protect concurrent execution of NFS2/3 5874 * ops along with unexport. This lock will be removed as 5875 * part of the NFSv4 phase 2 namespace redesign work. 5876 */ 5877 rw_enter(&ne->exported_lock, RW_READER); 5878 5879 /* 5880 * If this is the first compound we've seen, we need to start all 5881 * new instances' grace periods. 5882 */ 5883 if (nsrv4->seen_first_compound == 0) { 5884 rfs4_grace_start_new(nsrv4); 5885 /* 5886 * This must be set after rfs4_grace_start_new(), otherwise 5887 * another thread could proceed past here before the former 5888 * is finished. 5889 */ 5890 nsrv4->seen_first_compound = 1; 5891 } 5892 5893 for (i = 0; i < args->array_len && cs.cont; i++) { 5894 nfs_argop4 *argop; 5895 nfs_resop4 *resop; 5896 uint_t op; 5897 kstat_named_t *stat = ne->ne_globals->rfsproccnt[NFS_V4]; 5898 5899 argop = &args->array[i]; 5900 resop = &resp->array[i]; 5901 resop->resop = argop->argop; 5902 op = (uint_t)resop->resop; 5903 5904 if (op < rfsv4disp_cnt) { 5905 /* 5906 * Count the individual ops here; NULL and COMPOUND 5907 * are counted in common_dispatch() 5908 */ 5909 stat[op].value.ui64++; 5910 5911 NFS4_DEBUG(rfs4_debug > 1, 5912 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5913 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5914 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5915 rfs4_op_string[op], *cs.statusp)); 5916 if (*cs.statusp != NFS4_OK) 5917 cs.cont = FALSE; 5918 } else { 5919 /* 5920 * This is effectively dead code since XDR code 5921 * will have already returned BADXDR if op doesn't 5922 * decode to legal value. This only done for a 5923 * day when XDR code doesn't verify v4 opcodes. 5924 */ 5925 op = OP_ILLEGAL; 5926 stat[OP_ILLEGAL_IDX].value.ui64++; 5927 5928 rfs4_op_illegal(argop, resop, req, &cs); 5929 cs.cont = FALSE; 5930 } 5931 5932 /* 5933 * If not at last op, and if we are to stop, then 5934 * compact the results array. 5935 */ 5936 if ((i + 1) < args->array_len && !cs.cont) { 5937 nfs_resop4 *new_res = kmem_alloc( 5938 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5939 bcopy(resp->array, 5940 new_res, (i+1) * sizeof (nfs_resop4)); 5941 kmem_free(resp->array, 5942 args->array_len * sizeof (nfs_resop4)); 5943 5944 resp->array_len = i + 1; 5945 resp->array = new_res; 5946 } 5947 } 5948 5949 rw_exit(&ne->exported_lock); 5950 5951 /* 5952 * clear exportinfo and vnode fields from compound_state before dtrace 5953 * probe, to avoid tracing residual values for path and share path. 5954 */ 5955 if (cs.vp) 5956 VN_RELE(cs.vp); 5957 if (cs.saved_vp) 5958 VN_RELE(cs.saved_vp); 5959 cs.exi = cs.saved_exi = NULL; 5960 cs.vp = cs.saved_vp = NULL; 5961 5962 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5963 COMPOUND4res *, resp); 5964 5965 if (cs.saved_fh.nfs_fh4_val) 5966 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5967 5968 if (cs.basecr) 5969 crfree(cs.basecr); 5970 if (cs.cr) 5971 crfree(cs.cr); 5972 /* 5973 * done with this compound request, free the label 5974 */ 5975 5976 if (req->rq_label != NULL) { 5977 kmem_free(req->rq_label, sizeof (bslabel_t)); 5978 req->rq_label = NULL; 5979 } 5980 } 5981 5982 /* 5983 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5984 * XXX zero out the tag and array values. Need to investigate why the 5985 * XXX calls occur, but at least prevent the panic for now. 5986 */ 5987 void 5988 rfs4_compound_free(COMPOUND4res *resp) 5989 { 5990 uint_t i; 5991 5992 if (resp->tag.utf8string_val) { 5993 UTF8STRING_FREE(resp->tag) 5994 } 5995 5996 for (i = 0; i < resp->array_len; i++) { 5997 nfs_resop4 *resop; 5998 uint_t op; 5999 6000 resop = &resp->array[i]; 6001 op = (uint_t)resop->resop; 6002 if (op < rfsv4disp_cnt) { 6003 (*rfsv4disptab[op].dis_resfree)(resop); 6004 } 6005 } 6006 if (resp->array != NULL) { 6007 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 6008 } 6009 } 6010 6011 /* 6012 * Process the value of the compound request rpc flags, as a bit-AND 6013 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 6014 */ 6015 void 6016 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 6017 { 6018 int i; 6019 int flag = RPC_ALL; 6020 6021 for (i = 0; flag && i < args->array_len; i++) { 6022 uint_t op; 6023 6024 op = (uint_t)args->array[i].argop; 6025 6026 if (op < rfsv4disp_cnt) 6027 flag &= rfsv4disptab[op].dis_flags; 6028 else 6029 flag = 0; 6030 } 6031 *flagp = flag; 6032 } 6033 6034 nfsstat4 6035 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 6036 { 6037 nfsstat4 e; 6038 6039 rfs4_dbe_lock(cp->rc_dbe); 6040 6041 if (cp->rc_sysidt != LM_NOSYSID) { 6042 *sp = cp->rc_sysidt; 6043 e = NFS4_OK; 6044 6045 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 6046 *sp = cp->rc_sysidt; 6047 e = NFS4_OK; 6048 6049 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6050 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 6051 } else 6052 e = NFS4ERR_DELAY; 6053 6054 rfs4_dbe_unlock(cp->rc_dbe); 6055 return (e); 6056 } 6057 6058 #if defined(DEBUG) && ! defined(lint) 6059 static void lock_print(char *str, int operation, struct flock64 *flk) 6060 { 6061 char *op, *type; 6062 6063 switch (operation) { 6064 case F_GETLK: op = "F_GETLK"; 6065 break; 6066 case F_SETLK: op = "F_SETLK"; 6067 break; 6068 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6069 break; 6070 default: op = "F_UNKNOWN"; 6071 break; 6072 } 6073 switch (flk->l_type) { 6074 case F_UNLCK: type = "F_UNLCK"; 6075 break; 6076 case F_RDLCK: type = "F_RDLCK"; 6077 break; 6078 case F_WRLCK: type = "F_WRLCK"; 6079 break; 6080 default: type = "F_UNKNOWN"; 6081 break; 6082 } 6083 6084 ASSERT(flk->l_whence == 0); 6085 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6086 str, op, type, (longlong_t)flk->l_start, 6087 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6088 } 6089 6090 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6091 #else 6092 #define LOCK_PRINT(d, s, t, f) 6093 #endif 6094 6095 /*ARGSUSED*/ 6096 static bool_t 6097 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6098 { 6099 return (TRUE); 6100 } 6101 6102 /* 6103 * Look up the pathname using the vp in cs as the directory vnode. 6104 * cs->vp will be the vnode for the file on success 6105 */ 6106 6107 static nfsstat4 6108 rfs4_lookup(component4 *component, struct svc_req *req, 6109 struct compound_state *cs) 6110 { 6111 char *nm; 6112 uint32_t len; 6113 nfsstat4 status; 6114 struct sockaddr *ca; 6115 char *name; 6116 6117 if (cs->vp == NULL) { 6118 return (NFS4ERR_NOFILEHANDLE); 6119 } 6120 if (cs->vp->v_type != VDIR) { 6121 return (NFS4ERR_NOTDIR); 6122 } 6123 6124 status = utf8_dir_verify(component); 6125 if (status != NFS4_OK) 6126 return (status); 6127 6128 nm = utf8_to_fn(component, &len, NULL); 6129 if (nm == NULL) { 6130 return (NFS4ERR_INVAL); 6131 } 6132 6133 if (len > MAXNAMELEN) { 6134 kmem_free(nm, len); 6135 return (NFS4ERR_NAMETOOLONG); 6136 } 6137 6138 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6139 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6140 MAXPATHLEN + 1); 6141 6142 if (name == NULL) { 6143 kmem_free(nm, len); 6144 return (NFS4ERR_INVAL); 6145 } 6146 6147 status = do_rfs4_op_lookup(name, req, cs); 6148 6149 if (name != nm) 6150 kmem_free(name, MAXPATHLEN + 1); 6151 6152 kmem_free(nm, len); 6153 6154 return (status); 6155 } 6156 6157 static nfsstat4 6158 rfs4_lookupfile(component4 *component, struct svc_req *req, 6159 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6160 { 6161 nfsstat4 status; 6162 vnode_t *dvp = cs->vp; 6163 vattr_t bva, ava, fva; 6164 int error; 6165 6166 /* Get "before" change value */ 6167 bva.va_mask = AT_CTIME|AT_SEQ; 6168 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6169 if (error) 6170 return (puterrno4(error)); 6171 6172 /* rfs4_lookup may VN_RELE directory */ 6173 VN_HOLD(dvp); 6174 6175 status = rfs4_lookup(component, req, cs); 6176 if (status != NFS4_OK) { 6177 VN_RELE(dvp); 6178 return (status); 6179 } 6180 6181 /* 6182 * Get "after" change value, if it fails, simply return the 6183 * before value. 6184 */ 6185 ava.va_mask = AT_CTIME|AT_SEQ; 6186 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6187 ava.va_ctime = bva.va_ctime; 6188 ava.va_seq = 0; 6189 } 6190 VN_RELE(dvp); 6191 6192 /* 6193 * Validate the file is a file 6194 */ 6195 fva.va_mask = AT_TYPE|AT_MODE; 6196 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6197 if (error) 6198 return (puterrno4(error)); 6199 6200 if (fva.va_type != VREG) { 6201 if (fva.va_type == VDIR) 6202 return (NFS4ERR_ISDIR); 6203 if (fva.va_type == VLNK) 6204 return (NFS4ERR_SYMLINK); 6205 return (NFS4ERR_INVAL); 6206 } 6207 6208 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6209 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6210 6211 /* 6212 * It is undefined if VOP_LOOKUP will change va_seq, so 6213 * cinfo.atomic = TRUE only if we have 6214 * non-zero va_seq's, and they have not changed. 6215 */ 6216 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6217 cinfo->atomic = TRUE; 6218 else 6219 cinfo->atomic = FALSE; 6220 6221 /* Check for mandatory locking */ 6222 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6223 return (check_open_access(access, cs, req)); 6224 } 6225 6226 static nfsstat4 6227 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6228 cred_t *cr, vnode_t **vpp, bool_t *created) 6229 { 6230 int error; 6231 nfsstat4 status = NFS4_OK; 6232 vattr_t va; 6233 6234 tryagain: 6235 6236 /* 6237 * The file open mode used is VWRITE. If the client needs 6238 * some other semantic, then it should do the access checking 6239 * itself. It would have been nice to have the file open mode 6240 * passed as part of the arguments. 6241 */ 6242 6243 *created = TRUE; 6244 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6245 6246 if (error) { 6247 *created = FALSE; 6248 6249 /* 6250 * If we got something other than file already exists 6251 * then just return this error. Otherwise, we got 6252 * EEXIST. If we were doing a GUARDED create, then 6253 * just return this error. Otherwise, we need to 6254 * make sure that this wasn't a duplicate of an 6255 * exclusive create request. 6256 * 6257 * The assumption is made that a non-exclusive create 6258 * request will never return EEXIST. 6259 */ 6260 6261 if (error != EEXIST || mode == GUARDED4) { 6262 status = puterrno4(error); 6263 return (status); 6264 } 6265 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6266 NULL, NULL, NULL); 6267 6268 if (error) { 6269 /* 6270 * We couldn't find the file that we thought that 6271 * we just created. So, we'll just try creating 6272 * it again. 6273 */ 6274 if (error == ENOENT) 6275 goto tryagain; 6276 6277 status = puterrno4(error); 6278 return (status); 6279 } 6280 6281 if (mode == UNCHECKED4) { 6282 /* existing object must be regular file */ 6283 if ((*vpp)->v_type != VREG) { 6284 if ((*vpp)->v_type == VDIR) 6285 status = NFS4ERR_ISDIR; 6286 else if ((*vpp)->v_type == VLNK) 6287 status = NFS4ERR_SYMLINK; 6288 else 6289 status = NFS4ERR_INVAL; 6290 VN_RELE(*vpp); 6291 return (status); 6292 } 6293 6294 return (NFS4_OK); 6295 } 6296 6297 /* Check for duplicate request */ 6298 va.va_mask = AT_MTIME; 6299 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6300 if (!error) { 6301 /* We found the file */ 6302 const timestruc_t *mtime = &vap->va_mtime; 6303 6304 if (va.va_mtime.tv_sec != mtime->tv_sec || 6305 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6306 /* but its not our creation */ 6307 VN_RELE(*vpp); 6308 return (NFS4ERR_EXIST); 6309 } 6310 *created = TRUE; /* retrans of create == created */ 6311 return (NFS4_OK); 6312 } 6313 VN_RELE(*vpp); 6314 return (NFS4ERR_EXIST); 6315 } 6316 6317 return (NFS4_OK); 6318 } 6319 6320 static nfsstat4 6321 check_open_access(uint32_t access, struct compound_state *cs, 6322 struct svc_req *req) 6323 { 6324 int error; 6325 vnode_t *vp; 6326 bool_t readonly; 6327 cred_t *cr = cs->cr; 6328 6329 /* For now we don't allow mandatory locking as per V2/V3 */ 6330 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6331 return (NFS4ERR_ACCESS); 6332 } 6333 6334 vp = cs->vp; 6335 ASSERT(cr != NULL && vp->v_type == VREG); 6336 6337 /* 6338 * If the file system is exported read only and we are trying 6339 * to open for write, then return NFS4ERR_ROFS 6340 */ 6341 6342 readonly = rdonly4(req, cs); 6343 6344 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6345 return (NFS4ERR_ROFS); 6346 6347 if (access & OPEN4_SHARE_ACCESS_READ) { 6348 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6349 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6350 return (NFS4ERR_ACCESS); 6351 } 6352 } 6353 6354 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6355 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6356 if (error) 6357 return (NFS4ERR_ACCESS); 6358 } 6359 6360 return (NFS4_OK); 6361 } 6362 6363 static nfsstat4 6364 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6365 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6366 { 6367 struct nfs4_svgetit_arg sarg; 6368 struct nfs4_ntov_table ntov; 6369 6370 bool_t ntov_table_init = FALSE; 6371 struct statvfs64 sb; 6372 nfsstat4 status; 6373 vnode_t *vp; 6374 vattr_t bva, ava, iva, cva, *vap; 6375 vnode_t *dvp; 6376 timespec32_t *mtime; 6377 char *nm = NULL; 6378 uint_t buflen; 6379 bool_t created; 6380 bool_t setsize = FALSE; 6381 len_t reqsize; 6382 int error; 6383 bool_t trunc; 6384 caller_context_t ct; 6385 component4 *component; 6386 bslabel_t *clabel; 6387 struct sockaddr *ca; 6388 char *name = NULL; 6389 6390 sarg.sbp = &sb; 6391 sarg.is_referral = B_FALSE; 6392 6393 dvp = cs->vp; 6394 6395 /* Check if the file system is read only */ 6396 if (rdonly4(req, cs)) 6397 return (NFS4ERR_ROFS); 6398 6399 /* check the label of including directory */ 6400 if (is_system_labeled()) { 6401 ASSERT(req->rq_label != NULL); 6402 clabel = req->rq_label; 6403 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6404 "got client label from request(1)", 6405 struct svc_req *, req); 6406 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6407 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6408 cs->exi)) { 6409 return (NFS4ERR_ACCESS); 6410 } 6411 } 6412 } 6413 6414 /* 6415 * Get the last component of path name in nm. cs will reference 6416 * the including directory on success. 6417 */ 6418 component = &args->open_claim4_u.file; 6419 status = utf8_dir_verify(component); 6420 if (status != NFS4_OK) 6421 return (status); 6422 6423 nm = utf8_to_fn(component, &buflen, NULL); 6424 6425 if (nm == NULL) 6426 return (NFS4ERR_RESOURCE); 6427 6428 if (buflen > MAXNAMELEN) { 6429 kmem_free(nm, buflen); 6430 return (NFS4ERR_NAMETOOLONG); 6431 } 6432 6433 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6434 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6435 if (error) { 6436 kmem_free(nm, buflen); 6437 return (puterrno4(error)); 6438 } 6439 6440 if (bva.va_type != VDIR) { 6441 kmem_free(nm, buflen); 6442 return (NFS4ERR_NOTDIR); 6443 } 6444 6445 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6446 6447 switch (args->mode) { 6448 case GUARDED4: 6449 /*FALLTHROUGH*/ 6450 case UNCHECKED4: 6451 nfs4_ntov_table_init(&ntov); 6452 ntov_table_init = TRUE; 6453 6454 *attrset = 0; 6455 status = do_rfs4_set_attrs(attrset, 6456 &args->createhow4_u.createattrs, 6457 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6458 6459 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6460 sarg.vap->va_type != VREG) { 6461 if (sarg.vap->va_type == VDIR) 6462 status = NFS4ERR_ISDIR; 6463 else if (sarg.vap->va_type == VLNK) 6464 status = NFS4ERR_SYMLINK; 6465 else 6466 status = NFS4ERR_INVAL; 6467 } 6468 6469 if (status != NFS4_OK) { 6470 kmem_free(nm, buflen); 6471 nfs4_ntov_table_free(&ntov, &sarg); 6472 *attrset = 0; 6473 return (status); 6474 } 6475 6476 vap = sarg.vap; 6477 vap->va_type = VREG; 6478 vap->va_mask |= AT_TYPE; 6479 6480 if ((vap->va_mask & AT_MODE) == 0) { 6481 vap->va_mask |= AT_MODE; 6482 vap->va_mode = (mode_t)0600; 6483 } 6484 6485 if (vap->va_mask & AT_SIZE) { 6486 6487 /* Disallow create with a non-zero size */ 6488 6489 if ((reqsize = sarg.vap->va_size) != 0) { 6490 kmem_free(nm, buflen); 6491 nfs4_ntov_table_free(&ntov, &sarg); 6492 *attrset = 0; 6493 return (NFS4ERR_INVAL); 6494 } 6495 setsize = TRUE; 6496 } 6497 break; 6498 6499 case EXCLUSIVE4: 6500 /* prohibit EXCL create of named attributes */ 6501 if (dvp->v_flag & V_XATTRDIR) { 6502 kmem_free(nm, buflen); 6503 *attrset = 0; 6504 return (NFS4ERR_INVAL); 6505 } 6506 6507 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6508 cva.va_type = VREG; 6509 /* 6510 * Ensure no time overflows. Assumes underlying 6511 * filesystem supports at least 32 bits. 6512 * Truncate nsec to usec resolution to allow valid 6513 * compares even if the underlying filesystem truncates. 6514 */ 6515 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6516 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6517 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6518 cva.va_mode = (mode_t)0; 6519 vap = &cva; 6520 6521 /* 6522 * For EXCL create, attrset is set to the server attr 6523 * used to cache the client's verifier. 6524 */ 6525 *attrset = FATTR4_TIME_MODIFY_MASK; 6526 break; 6527 } 6528 6529 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6530 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6531 MAXPATHLEN + 1); 6532 6533 if (name == NULL) { 6534 kmem_free(nm, buflen); 6535 return (NFS4ERR_SERVERFAULT); 6536 } 6537 6538 status = create_vnode(dvp, name, vap, args->mode, 6539 cs->cr, &vp, &created); 6540 if (nm != name) 6541 kmem_free(name, MAXPATHLEN + 1); 6542 kmem_free(nm, buflen); 6543 6544 if (status != NFS4_OK) { 6545 if (ntov_table_init) 6546 nfs4_ntov_table_free(&ntov, &sarg); 6547 *attrset = 0; 6548 return (status); 6549 } 6550 6551 trunc = (setsize && !created); 6552 6553 if (args->mode != EXCLUSIVE4) { 6554 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6555 6556 /* 6557 * True verification that object was created with correct 6558 * attrs is impossible. The attrs could have been changed 6559 * immediately after object creation. If attributes did 6560 * not verify, the only recourse for the server is to 6561 * destroy the object. Maybe if some attrs (like gid) 6562 * are set incorrectly, the object should be destroyed; 6563 * however, seems bad as a default policy. Do we really 6564 * want to destroy an object over one of the times not 6565 * verifying correctly? For these reasons, the server 6566 * currently sets bits in attrset for createattrs 6567 * that were set; however, no verification is done. 6568 * 6569 * vmask_to_nmask accounts for vattr bits set on create 6570 * [do_rfs4_set_attrs() only sets resp bits for 6571 * non-vattr/vfs bits.] 6572 * Mask off any bits we set by default so as not to return 6573 * more attrset bits than were requested in createattrs 6574 */ 6575 if (created) { 6576 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6577 *attrset &= createmask; 6578 } else { 6579 /* 6580 * We did not create the vnode (we tried but it 6581 * already existed). In this case, the only createattr 6582 * that the spec allows the server to set is size, 6583 * and even then, it can only be set if it is 0. 6584 */ 6585 *attrset = 0; 6586 if (trunc) 6587 *attrset = FATTR4_SIZE_MASK; 6588 } 6589 } 6590 if (ntov_table_init) 6591 nfs4_ntov_table_free(&ntov, &sarg); 6592 6593 /* 6594 * Get the initial "after" sequence number, if it fails, 6595 * set to zero, time to before. 6596 */ 6597 iva.va_mask = AT_CTIME|AT_SEQ; 6598 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6599 iva.va_seq = 0; 6600 iva.va_ctime = bva.va_ctime; 6601 } 6602 6603 /* 6604 * create_vnode attempts to create the file exclusive, 6605 * if it already exists the VOP_CREATE will fail and 6606 * may not increase va_seq. It is atomic if 6607 * we haven't changed the directory, but if it has changed 6608 * we don't know what changed it. 6609 */ 6610 if (!created) { 6611 if (bva.va_seq && iva.va_seq && 6612 bva.va_seq == iva.va_seq) 6613 cinfo->atomic = TRUE; 6614 else 6615 cinfo->atomic = FALSE; 6616 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6617 } else { 6618 /* 6619 * The entry was created, we need to sync the 6620 * directory metadata. 6621 */ 6622 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6623 6624 /* 6625 * Get "after" change value, if it fails, simply return the 6626 * before value. 6627 */ 6628 ava.va_mask = AT_CTIME|AT_SEQ; 6629 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6630 ava.va_ctime = bva.va_ctime; 6631 ava.va_seq = 0; 6632 } 6633 6634 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6635 6636 /* 6637 * The cinfo->atomic = TRUE only if we have 6638 * non-zero va_seq's, and it has incremented by exactly one 6639 * during the create_vnode and it didn't 6640 * change during the VOP_FSYNC. 6641 */ 6642 if (bva.va_seq && iva.va_seq && ava.va_seq && 6643 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6644 cinfo->atomic = TRUE; 6645 else 6646 cinfo->atomic = FALSE; 6647 } 6648 6649 /* Check for mandatory locking and that the size gets set. */ 6650 cva.va_mask = AT_MODE; 6651 if (setsize) 6652 cva.va_mask |= AT_SIZE; 6653 6654 /* Assume the worst */ 6655 cs->mandlock = TRUE; 6656 6657 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6658 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6659 6660 /* 6661 * Truncate the file if necessary; this would be 6662 * the case for create over an existing file. 6663 */ 6664 6665 if (trunc) { 6666 int in_crit = 0; 6667 rfs4_file_t *fp; 6668 nfs4_srv_t *nsrv4; 6669 bool_t create = FALSE; 6670 6671 /* 6672 * We are writing over an existing file. 6673 * Check to see if we need to recall a delegation. 6674 */ 6675 nsrv4 = nfs4_get_srv(); 6676 rfs4_hold_deleg_policy(nsrv4); 6677 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6678 if (rfs4_check_delegated_byfp(FWRITE, fp, 6679 (reqsize == 0), FALSE, FALSE, &clientid)) { 6680 rfs4_file_rele(fp); 6681 rfs4_rele_deleg_policy(nsrv4); 6682 VN_RELE(vp); 6683 *attrset = 0; 6684 return (NFS4ERR_DELAY); 6685 } 6686 rfs4_file_rele(fp); 6687 } 6688 rfs4_rele_deleg_policy(nsrv4); 6689 6690 if (nbl_need_check(vp)) { 6691 in_crit = 1; 6692 6693 ASSERT(reqsize == 0); 6694 6695 nbl_start_crit(vp, RW_READER); 6696 if (nbl_conflict(vp, NBL_WRITE, 0, 6697 cva.va_size, 0, NULL)) { 6698 in_crit = 0; 6699 nbl_end_crit(vp); 6700 VN_RELE(vp); 6701 *attrset = 0; 6702 return (NFS4ERR_ACCESS); 6703 } 6704 } 6705 ct.cc_sysid = 0; 6706 ct.cc_pid = 0; 6707 ct.cc_caller_id = nfs4_srv_caller_id; 6708 ct.cc_flags = CC_DONTBLOCK; 6709 6710 cva.va_mask = AT_SIZE; 6711 cva.va_size = reqsize; 6712 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6713 if (in_crit) 6714 nbl_end_crit(vp); 6715 } 6716 } 6717 6718 error = makefh4(&cs->fh, vp, cs->exi); 6719 6720 /* 6721 * Force modified data and metadata out to stable storage. 6722 */ 6723 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6724 6725 if (error) { 6726 VN_RELE(vp); 6727 *attrset = 0; 6728 return (puterrno4(error)); 6729 } 6730 6731 /* if parent dir is attrdir, set namedattr fh flag */ 6732 if (dvp->v_flag & V_XATTRDIR) 6733 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6734 6735 if (cs->vp) 6736 VN_RELE(cs->vp); 6737 6738 cs->vp = vp; 6739 6740 /* 6741 * if we did not create the file, we will need to check 6742 * the access bits on the file 6743 */ 6744 6745 if (!created) { 6746 if (setsize) 6747 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6748 status = check_open_access(args->share_access, cs, req); 6749 if (status != NFS4_OK) 6750 *attrset = 0; 6751 } 6752 return (status); 6753 } 6754 6755 /*ARGSUSED*/ 6756 static void 6757 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6758 rfs4_openowner_t *oo, delegreq_t deleg, 6759 uint32_t access, uint32_t deny, 6760 OPEN4res *resp, int deleg_cur) 6761 { 6762 /* XXX Currently not using req */ 6763 rfs4_state_t *sp; 6764 rfs4_file_t *fp; 6765 bool_t screate = TRUE; 6766 bool_t fcreate = TRUE; 6767 uint32_t open_a, share_a; 6768 uint32_t open_d, share_d; 6769 rfs4_deleg_state_t *dsp; 6770 sysid_t sysid; 6771 nfsstat4 status; 6772 caller_context_t ct; 6773 int fflags = 0; 6774 int recall = 0; 6775 int err; 6776 int first_open; 6777 6778 /* get the file struct and hold a lock on it during initial open */ 6779 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6780 if (fp == NULL) { 6781 resp->status = NFS4ERR_RESOURCE; 6782 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6783 return; 6784 } 6785 6786 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6787 if (sp == NULL) { 6788 resp->status = NFS4ERR_RESOURCE; 6789 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6790 /* No need to keep any reference */ 6791 rw_exit(&fp->rf_file_rwlock); 6792 rfs4_file_rele(fp); 6793 return; 6794 } 6795 6796 /* try to get the sysid before continuing */ 6797 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6798 resp->status = status; 6799 rfs4_file_rele(fp); 6800 /* Not a fully formed open; "close" it */ 6801 if (screate == TRUE) 6802 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6803 rfs4_state_rele(sp); 6804 return; 6805 } 6806 6807 /* Calculate the fflags for this OPEN. */ 6808 if (access & OPEN4_SHARE_ACCESS_READ) 6809 fflags |= FREAD; 6810 if (access & OPEN4_SHARE_ACCESS_WRITE) 6811 fflags |= FWRITE; 6812 6813 rfs4_dbe_lock(sp->rs_dbe); 6814 6815 /* 6816 * Calculate the new deny and access mode that this open is adding to 6817 * the file for this open owner; 6818 */ 6819 open_d = (deny & ~sp->rs_open_deny); 6820 open_a = (access & ~sp->rs_open_access); 6821 6822 /* 6823 * Calculate the new share access and share deny modes that this open 6824 * is adding to the file for this open owner; 6825 */ 6826 share_a = (access & ~sp->rs_share_access); 6827 share_d = (deny & ~sp->rs_share_deny); 6828 6829 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6830 6831 /* 6832 * Check to see the client has already sent an open for this 6833 * open owner on this file with the same share/deny modes. 6834 * If so, we don't need to check for a conflict and we don't 6835 * need to add another shrlock. If not, then we need to 6836 * check for conflicts in deny and access before checking for 6837 * conflicts in delegation. We don't want to recall a 6838 * delegation based on an open that will eventually fail based 6839 * on shares modes. 6840 */ 6841 6842 if (share_a || share_d) { 6843 if ((err = rfs4_share(sp, access, deny)) != 0) { 6844 rfs4_dbe_unlock(sp->rs_dbe); 6845 resp->status = err; 6846 6847 rfs4_file_rele(fp); 6848 /* Not a fully formed open; "close" it */ 6849 if (screate == TRUE) 6850 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6851 rfs4_state_rele(sp); 6852 return; 6853 } 6854 } 6855 6856 rfs4_dbe_lock(fp->rf_dbe); 6857 6858 /* 6859 * Check to see if this file is delegated and if so, if a 6860 * recall needs to be done. 6861 */ 6862 if (rfs4_check_recall(sp, access)) { 6863 rfs4_dbe_unlock(fp->rf_dbe); 6864 rfs4_dbe_unlock(sp->rs_dbe); 6865 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6866 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6867 rfs4_dbe_lock(sp->rs_dbe); 6868 6869 /* if state closed while lock was dropped */ 6870 if (sp->rs_closed) { 6871 if (share_a || share_d) 6872 (void) rfs4_unshare(sp); 6873 rfs4_dbe_unlock(sp->rs_dbe); 6874 rfs4_file_rele(fp); 6875 /* Not a fully formed open; "close" it */ 6876 if (screate == TRUE) 6877 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6878 rfs4_state_rele(sp); 6879 resp->status = NFS4ERR_OLD_STATEID; 6880 return; 6881 } 6882 6883 rfs4_dbe_lock(fp->rf_dbe); 6884 /* Let's see if the delegation was returned */ 6885 if (rfs4_check_recall(sp, access)) { 6886 rfs4_dbe_unlock(fp->rf_dbe); 6887 if (share_a || share_d) 6888 (void) rfs4_unshare(sp); 6889 rfs4_dbe_unlock(sp->rs_dbe); 6890 rfs4_file_rele(fp); 6891 rfs4_update_lease(sp->rs_owner->ro_client); 6892 6893 /* Not a fully formed open; "close" it */ 6894 if (screate == TRUE) 6895 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6896 rfs4_state_rele(sp); 6897 resp->status = NFS4ERR_DELAY; 6898 return; 6899 } 6900 } 6901 /* 6902 * the share check passed and any delegation conflict has been 6903 * taken care of, now call vop_open. 6904 * if this is the first open then call vop_open with fflags. 6905 * if not, call vn_open_upgrade with just the upgrade flags. 6906 * 6907 * if the file has been opened already, it will have the current 6908 * access mode in the state struct. if it has no share access, then 6909 * this is a new open. 6910 * 6911 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6912 * call VOP_OPEN(), just do the open upgrade. 6913 */ 6914 if (first_open && !deleg_cur) { 6915 ct.cc_sysid = sysid; 6916 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 6917 ct.cc_caller_id = nfs4_srv_caller_id; 6918 ct.cc_flags = CC_DONTBLOCK; 6919 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6920 if (err) { 6921 rfs4_dbe_unlock(fp->rf_dbe); 6922 if (share_a || share_d) 6923 (void) rfs4_unshare(sp); 6924 rfs4_dbe_unlock(sp->rs_dbe); 6925 rfs4_file_rele(fp); 6926 6927 /* Not a fully formed open; "close" it */ 6928 if (screate == TRUE) 6929 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6930 rfs4_state_rele(sp); 6931 /* check if a monitor detected a delegation conflict */ 6932 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6933 resp->status = NFS4ERR_DELAY; 6934 else 6935 resp->status = NFS4ERR_SERVERFAULT; 6936 return; 6937 } 6938 } else { /* open upgrade */ 6939 /* 6940 * calculate the fflags for the new mode that is being added 6941 * by this upgrade. 6942 */ 6943 fflags = 0; 6944 if (open_a & OPEN4_SHARE_ACCESS_READ) 6945 fflags |= FREAD; 6946 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6947 fflags |= FWRITE; 6948 vn_open_upgrade(cs->vp, fflags); 6949 } 6950 sp->rs_open_access |= access; 6951 sp->rs_open_deny |= deny; 6952 6953 if (open_d & OPEN4_SHARE_DENY_READ) 6954 fp->rf_deny_read++; 6955 if (open_d & OPEN4_SHARE_DENY_WRITE) 6956 fp->rf_deny_write++; 6957 fp->rf_share_deny |= deny; 6958 6959 if (open_a & OPEN4_SHARE_ACCESS_READ) 6960 fp->rf_access_read++; 6961 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6962 fp->rf_access_write++; 6963 fp->rf_share_access |= access; 6964 6965 /* 6966 * Check for delegation here. if the deleg argument is not 6967 * DELEG_ANY, then this is a reclaim from a client and 6968 * we must honor the delegation requested. If necessary we can 6969 * set the recall flag. 6970 */ 6971 6972 dsp = rfs4_grant_delegation(deleg, sp, &recall); 6973 6974 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 6975 6976 next_stateid(&sp->rs_stateid); 6977 6978 resp->stateid = sp->rs_stateid.stateid; 6979 6980 rfs4_dbe_unlock(fp->rf_dbe); 6981 rfs4_dbe_unlock(sp->rs_dbe); 6982 6983 if (dsp) { 6984 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6985 rfs4_deleg_state_rele(dsp); 6986 } 6987 6988 rfs4_file_rele(fp); 6989 rfs4_state_rele(sp); 6990 6991 resp->status = NFS4_OK; 6992 } 6993 6994 /*ARGSUSED*/ 6995 static void 6996 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6997 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6998 { 6999 change_info4 *cinfo = &resp->cinfo; 7000 bitmap4 *attrset = &resp->attrset; 7001 7002 if (args->opentype == OPEN4_NOCREATE) 7003 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 7004 req, cs, args->share_access, cinfo); 7005 else { 7006 /* inhibit delegation grants during exclusive create */ 7007 7008 if (args->mode == EXCLUSIVE4) 7009 rfs4_disable_delegation(); 7010 7011 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 7012 oo->ro_client->rc_clientid); 7013 } 7014 7015 if (resp->status == NFS4_OK) { 7016 7017 /* cs->vp cs->fh now reference the desired file */ 7018 7019 rfs4_do_open(cs, req, oo, 7020 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 7021 args->share_access, args->share_deny, resp, 0); 7022 7023 /* 7024 * If rfs4_createfile set attrset, we must 7025 * clear this attrset before the response is copied. 7026 */ 7027 if (resp->status != NFS4_OK && resp->attrset) { 7028 resp->attrset = 0; 7029 } 7030 } 7031 else 7032 *cs->statusp = resp->status; 7033 7034 if (args->mode == EXCLUSIVE4) 7035 rfs4_enable_delegation(); 7036 } 7037 7038 /*ARGSUSED*/ 7039 static void 7040 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 7041 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7042 { 7043 change_info4 *cinfo = &resp->cinfo; 7044 vattr_t va; 7045 vtype_t v_type = cs->vp->v_type; 7046 int error = 0; 7047 7048 /* Verify that we have a regular file */ 7049 if (v_type != VREG) { 7050 if (v_type == VDIR) 7051 resp->status = NFS4ERR_ISDIR; 7052 else if (v_type == VLNK) 7053 resp->status = NFS4ERR_SYMLINK; 7054 else 7055 resp->status = NFS4ERR_INVAL; 7056 return; 7057 } 7058 7059 va.va_mask = AT_MODE|AT_UID; 7060 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7061 if (error) { 7062 resp->status = puterrno4(error); 7063 return; 7064 } 7065 7066 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7067 7068 /* 7069 * Check if we have access to the file, Note the the file 7070 * could have originally been open UNCHECKED or GUARDED 7071 * with mode bits that will now fail, but there is nothing 7072 * we can really do about that except in the case that the 7073 * owner of the file is the one requesting the open. 7074 */ 7075 if (crgetuid(cs->cr) != va.va_uid) { 7076 resp->status = check_open_access(args->share_access, cs, req); 7077 if (resp->status != NFS4_OK) { 7078 return; 7079 } 7080 } 7081 7082 /* 7083 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7084 */ 7085 cinfo->before = 0; 7086 cinfo->after = 0; 7087 cinfo->atomic = FALSE; 7088 7089 rfs4_do_open(cs, req, oo, 7090 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 7091 args->share_access, args->share_deny, resp, 0); 7092 } 7093 7094 static void 7095 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7096 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7097 { 7098 int error; 7099 nfsstat4 status; 7100 stateid4 stateid = 7101 args->open_claim4_u.delegate_cur_info.delegate_stateid; 7102 rfs4_deleg_state_t *dsp; 7103 7104 /* 7105 * Find the state info from the stateid and confirm that the 7106 * file is delegated. If the state openowner is the same as 7107 * the supplied openowner we're done. If not, get the file 7108 * info from the found state info. Use that file info to 7109 * create the state for this lock owner. Note solaris doen't 7110 * really need the pathname to find the file. We may want to 7111 * lookup the pathname and make sure that the vp exist and 7112 * matches the vp in the file structure. However it is 7113 * possible that the pathname nolonger exists (local process 7114 * unlinks the file), so this may not be that useful. 7115 */ 7116 7117 status = rfs4_get_deleg_state(&stateid, &dsp); 7118 if (status != NFS4_OK) { 7119 resp->status = status; 7120 return; 7121 } 7122 7123 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7124 7125 /* 7126 * New lock owner, create state. Since this was probably called 7127 * in response to a CB_RECALL we set deleg to DELEG_NONE 7128 */ 7129 7130 ASSERT(cs->vp != NULL); 7131 VN_RELE(cs->vp); 7132 VN_HOLD(dsp->rds_finfo->rf_vp); 7133 cs->vp = dsp->rds_finfo->rf_vp; 7134 7135 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7136 rfs4_deleg_state_rele(dsp); 7137 *cs->statusp = resp->status = puterrno4(error); 7138 return; 7139 } 7140 7141 /* Mark progress for delegation returns */ 7142 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7143 rfs4_deleg_state_rele(dsp); 7144 rfs4_do_open(cs, req, oo, DELEG_NONE, 7145 args->share_access, args->share_deny, resp, 1); 7146 } 7147 7148 /*ARGSUSED*/ 7149 static void 7150 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7151 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7152 { 7153 /* 7154 * Lookup the pathname, it must already exist since this file 7155 * was delegated. 7156 * 7157 * Find the file and state info for this vp and open owner pair. 7158 * check that they are in fact delegated. 7159 * check that the state access and deny modes are the same. 7160 * 7161 * Return the delgation possibly seting the recall flag. 7162 */ 7163 rfs4_file_t *fp; 7164 rfs4_state_t *sp; 7165 bool_t create = FALSE; 7166 bool_t dcreate = FALSE; 7167 rfs4_deleg_state_t *dsp; 7168 nfsace4 *ace; 7169 7170 /* Note we ignore oflags */ 7171 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7172 req, cs, args->share_access, &resp->cinfo); 7173 7174 if (resp->status != NFS4_OK) { 7175 return; 7176 } 7177 7178 /* get the file struct and hold a lock on it during initial open */ 7179 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7180 if (fp == NULL) { 7181 resp->status = NFS4ERR_RESOURCE; 7182 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7183 return; 7184 } 7185 7186 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7187 if (sp == NULL) { 7188 resp->status = NFS4ERR_SERVERFAULT; 7189 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7190 rw_exit(&fp->rf_file_rwlock); 7191 rfs4_file_rele(fp); 7192 return; 7193 } 7194 7195 rfs4_dbe_lock(sp->rs_dbe); 7196 rfs4_dbe_lock(fp->rf_dbe); 7197 if (args->share_access != sp->rs_share_access || 7198 args->share_deny != sp->rs_share_deny || 7199 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7200 NFS4_DEBUG(rfs4_debug, 7201 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7202 rfs4_dbe_unlock(fp->rf_dbe); 7203 rfs4_dbe_unlock(sp->rs_dbe); 7204 rfs4_file_rele(fp); 7205 rfs4_state_rele(sp); 7206 resp->status = NFS4ERR_SERVERFAULT; 7207 return; 7208 } 7209 rfs4_dbe_unlock(fp->rf_dbe); 7210 rfs4_dbe_unlock(sp->rs_dbe); 7211 7212 dsp = rfs4_finddeleg(sp, &dcreate); 7213 if (dsp == NULL) { 7214 rfs4_state_rele(sp); 7215 rfs4_file_rele(fp); 7216 resp->status = NFS4ERR_SERVERFAULT; 7217 return; 7218 } 7219 7220 next_stateid(&sp->rs_stateid); 7221 7222 resp->stateid = sp->rs_stateid.stateid; 7223 7224 resp->delegation.delegation_type = dsp->rds_dtype; 7225 7226 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7227 open_read_delegation4 *rv = 7228 &resp->delegation.open_delegation4_u.read; 7229 7230 rv->stateid = dsp->rds_delegid.stateid; 7231 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7232 ace = &rv->permissions; 7233 } else { 7234 open_write_delegation4 *rv = 7235 &resp->delegation.open_delegation4_u.write; 7236 7237 rv->stateid = dsp->rds_delegid.stateid; 7238 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7239 ace = &rv->permissions; 7240 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7241 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7242 } 7243 7244 /* XXX For now */ 7245 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7246 ace->flag = 0; 7247 ace->access_mask = 0; 7248 ace->who.utf8string_len = 0; 7249 ace->who.utf8string_val = 0; 7250 7251 rfs4_deleg_state_rele(dsp); 7252 rfs4_state_rele(sp); 7253 rfs4_file_rele(fp); 7254 } 7255 7256 typedef enum { 7257 NFS4_CHKSEQ_OKAY = 0, 7258 NFS4_CHKSEQ_REPLAY = 1, 7259 NFS4_CHKSEQ_BAD = 2 7260 } rfs4_chkseq_t; 7261 7262 /* 7263 * Generic function for sequence number checks. 7264 */ 7265 static rfs4_chkseq_t 7266 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7267 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7268 { 7269 /* Same sequence ids and matching operations? */ 7270 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7271 if (copyres == TRUE) { 7272 rfs4_free_reply(resop); 7273 rfs4_copy_reply(resop, lastop); 7274 } 7275 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7276 "Replayed SEQID %d\n", seqid)); 7277 return (NFS4_CHKSEQ_REPLAY); 7278 } 7279 7280 /* If the incoming sequence is not the next expected then it is bad */ 7281 if (rqst_seq != seqid + 1) { 7282 if (rqst_seq == seqid) { 7283 NFS4_DEBUG(rfs4_debug, 7284 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7285 "but last op was %d current op is %d\n", 7286 lastop->resop, resop->resop)); 7287 return (NFS4_CHKSEQ_BAD); 7288 } 7289 NFS4_DEBUG(rfs4_debug, 7290 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7291 rqst_seq, seqid)); 7292 return (NFS4_CHKSEQ_BAD); 7293 } 7294 7295 /* Everything okay -- next expected */ 7296 return (NFS4_CHKSEQ_OKAY); 7297 } 7298 7299 7300 static rfs4_chkseq_t 7301 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7302 { 7303 rfs4_chkseq_t rc; 7304 7305 rfs4_dbe_lock(op->ro_dbe); 7306 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7307 TRUE); 7308 rfs4_dbe_unlock(op->ro_dbe); 7309 7310 if (rc == NFS4_CHKSEQ_OKAY) 7311 rfs4_update_lease(op->ro_client); 7312 7313 return (rc); 7314 } 7315 7316 static rfs4_chkseq_t 7317 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7318 { 7319 rfs4_chkseq_t rc; 7320 7321 rfs4_dbe_lock(op->ro_dbe); 7322 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7323 olo_seqid, resop, FALSE); 7324 rfs4_dbe_unlock(op->ro_dbe); 7325 7326 return (rc); 7327 } 7328 7329 static rfs4_chkseq_t 7330 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7331 { 7332 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7333 7334 rfs4_dbe_lock(lsp->rls_dbe); 7335 if (!lsp->rls_skip_seqid_check) 7336 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7337 resop, TRUE); 7338 rfs4_dbe_unlock(lsp->rls_dbe); 7339 7340 return (rc); 7341 } 7342 7343 static void 7344 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7345 struct svc_req *req, struct compound_state *cs) 7346 { 7347 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7348 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7349 open_owner4 *owner = &args->owner; 7350 open_claim_type4 claim = args->claim; 7351 rfs4_client_t *cp; 7352 rfs4_openowner_t *oo; 7353 bool_t create; 7354 bool_t replay = FALSE; 7355 int can_reclaim; 7356 7357 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7358 OPEN4args *, args); 7359 7360 if (cs->vp == NULL) { 7361 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7362 goto end; 7363 } 7364 7365 /* 7366 * Need to check clientid and lease expiration first based on 7367 * error ordering and incrementing sequence id. 7368 */ 7369 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7370 if (cp == NULL) { 7371 *cs->statusp = resp->status = 7372 rfs4_check_clientid(&owner->clientid, 0); 7373 goto end; 7374 } 7375 7376 if (rfs4_lease_expired(cp)) { 7377 rfs4_client_close(cp); 7378 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7379 goto end; 7380 } 7381 can_reclaim = cp->rc_can_reclaim; 7382 7383 /* 7384 * Find the open_owner for use from this point forward. Take 7385 * care in updating the sequence id based on the type of error 7386 * being returned. 7387 */ 7388 retry: 7389 create = TRUE; 7390 oo = rfs4_findopenowner(owner, &create, args->seqid); 7391 if (oo == NULL) { 7392 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 7393 rfs4_client_rele(cp); 7394 goto end; 7395 } 7396 7397 /* Hold off access to the sequence space while the open is done */ 7398 rfs4_sw_enter(&oo->ro_sw); 7399 7400 /* 7401 * If the open_owner existed before at the server, then check 7402 * the sequence id. 7403 */ 7404 if (!create && !oo->ro_postpone_confirm) { 7405 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7406 case NFS4_CHKSEQ_BAD: 7407 if ((args->seqid > oo->ro_open_seqid) && 7408 oo->ro_need_confirm) { 7409 rfs4_free_opens(oo, TRUE, FALSE); 7410 rfs4_sw_exit(&oo->ro_sw); 7411 rfs4_openowner_rele(oo); 7412 goto retry; 7413 } 7414 resp->status = NFS4ERR_BAD_SEQID; 7415 goto out; 7416 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7417 replay = TRUE; 7418 goto out; 7419 default: 7420 break; 7421 } 7422 7423 /* 7424 * Sequence was ok and open owner exists 7425 * check to see if we have yet to see an 7426 * open_confirm. 7427 */ 7428 if (oo->ro_need_confirm) { 7429 rfs4_free_opens(oo, TRUE, FALSE); 7430 rfs4_sw_exit(&oo->ro_sw); 7431 rfs4_openowner_rele(oo); 7432 goto retry; 7433 } 7434 } 7435 /* Grace only applies to regular-type OPENs */ 7436 if (rfs4_clnt_in_grace(cp) && 7437 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7438 *cs->statusp = resp->status = NFS4ERR_GRACE; 7439 goto out; 7440 } 7441 7442 /* 7443 * If previous state at the server existed then can_reclaim 7444 * will be set. If not reply NFS4ERR_NO_GRACE to the 7445 * client. 7446 */ 7447 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7448 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7449 goto out; 7450 } 7451 7452 7453 /* 7454 * Reject the open if the client has missed the grace period 7455 */ 7456 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7457 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7458 goto out; 7459 } 7460 7461 /* Couple of up-front bookkeeping items */ 7462 if (oo->ro_need_confirm) { 7463 /* 7464 * If this is a reclaim OPEN then we should not ask 7465 * for a confirmation of the open_owner per the 7466 * protocol specification. 7467 */ 7468 if (claim == CLAIM_PREVIOUS) 7469 oo->ro_need_confirm = FALSE; 7470 else 7471 resp->rflags |= OPEN4_RESULT_CONFIRM; 7472 } 7473 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7474 7475 /* 7476 * If there is an unshared filesystem mounted on this vnode, 7477 * do not allow to open/create in this directory. 7478 */ 7479 if (vn_ismntpt(cs->vp)) { 7480 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7481 goto out; 7482 } 7483 7484 /* 7485 * access must READ, WRITE, or BOTH. No access is invalid. 7486 * deny can be READ, WRITE, BOTH, or NONE. 7487 * bits not defined for access/deny are invalid. 7488 */ 7489 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7490 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7491 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7492 *cs->statusp = resp->status = NFS4ERR_INVAL; 7493 goto out; 7494 } 7495 7496 7497 /* 7498 * make sure attrset is zero before response is built. 7499 */ 7500 resp->attrset = 0; 7501 7502 switch (claim) { 7503 case CLAIM_NULL: 7504 rfs4_do_opennull(cs, req, args, oo, resp); 7505 break; 7506 case CLAIM_PREVIOUS: 7507 rfs4_do_openprev(cs, req, args, oo, resp); 7508 break; 7509 case CLAIM_DELEGATE_CUR: 7510 rfs4_do_opendelcur(cs, req, args, oo, resp); 7511 break; 7512 case CLAIM_DELEGATE_PREV: 7513 rfs4_do_opendelprev(cs, req, args, oo, resp); 7514 break; 7515 default: 7516 resp->status = NFS4ERR_INVAL; 7517 break; 7518 } 7519 7520 out: 7521 rfs4_client_rele(cp); 7522 7523 /* Catch sequence id handling here to make it a little easier */ 7524 switch (resp->status) { 7525 case NFS4ERR_BADXDR: 7526 case NFS4ERR_BAD_SEQID: 7527 case NFS4ERR_BAD_STATEID: 7528 case NFS4ERR_NOFILEHANDLE: 7529 case NFS4ERR_RESOURCE: 7530 case NFS4ERR_STALE_CLIENTID: 7531 case NFS4ERR_STALE_STATEID: 7532 /* 7533 * The protocol states that if any of these errors are 7534 * being returned, the sequence id should not be 7535 * incremented. Any other return requires an 7536 * increment. 7537 */ 7538 break; 7539 default: 7540 /* Always update the lease in this case */ 7541 rfs4_update_lease(oo->ro_client); 7542 7543 /* Regular response - copy the result */ 7544 if (!replay) 7545 rfs4_update_open_resp(oo, resop, &cs->fh); 7546 7547 /* 7548 * REPLAY case: Only if the previous response was OK 7549 * do we copy the filehandle. If not OK, no 7550 * filehandle to copy. 7551 */ 7552 if (replay == TRUE && 7553 resp->status == NFS4_OK && 7554 oo->ro_reply_fh.nfs_fh4_val) { 7555 /* 7556 * If this is a replay, we must restore the 7557 * current filehandle/vp to that of what was 7558 * returned originally. Try our best to do 7559 * it. 7560 */ 7561 nfs_fh4_fmt_t *fh_fmtp = 7562 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7563 7564 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7565 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7566 7567 if (cs->exi == NULL) { 7568 resp->status = NFS4ERR_STALE; 7569 goto finish; 7570 } 7571 7572 VN_RELE(cs->vp); 7573 7574 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7575 &resp->status); 7576 7577 if (cs->vp == NULL) 7578 goto finish; 7579 7580 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7581 } 7582 7583 /* 7584 * If this was a replay, no need to update the 7585 * sequence id. If the open_owner was not created on 7586 * this pass, then update. The first use of an 7587 * open_owner will not bump the sequence id. 7588 */ 7589 if (replay == FALSE && !create) 7590 rfs4_update_open_sequence(oo); 7591 /* 7592 * If the client is receiving an error and the 7593 * open_owner needs to be confirmed, there is no way 7594 * to notify the client of this fact ignoring the fact 7595 * that the server has no method of returning a 7596 * stateid to confirm. Therefore, the server needs to 7597 * mark this open_owner in a way as to avoid the 7598 * sequence id checking the next time the client uses 7599 * this open_owner. 7600 */ 7601 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7602 oo->ro_postpone_confirm = TRUE; 7603 /* 7604 * If OK response then clear the postpone flag and 7605 * reset the sequence id to keep in sync with the 7606 * client. 7607 */ 7608 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7609 oo->ro_postpone_confirm = FALSE; 7610 oo->ro_open_seqid = args->seqid; 7611 } 7612 break; 7613 } 7614 7615 finish: 7616 *cs->statusp = resp->status; 7617 7618 rfs4_sw_exit(&oo->ro_sw); 7619 rfs4_openowner_rele(oo); 7620 7621 end: 7622 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7623 OPEN4res *, resp); 7624 } 7625 7626 /*ARGSUSED*/ 7627 void 7628 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7629 struct svc_req *req, struct compound_state *cs) 7630 { 7631 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7632 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7633 rfs4_state_t *sp; 7634 nfsstat4 status; 7635 7636 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7637 OPEN_CONFIRM4args *, args); 7638 7639 if (cs->vp == NULL) { 7640 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7641 goto out; 7642 } 7643 7644 if (cs->vp->v_type != VREG) { 7645 *cs->statusp = resp->status = 7646 cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL; 7647 return; 7648 } 7649 7650 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7651 if (status != NFS4_OK) { 7652 *cs->statusp = resp->status = status; 7653 goto out; 7654 } 7655 7656 /* Ensure specified filehandle matches */ 7657 if (cs->vp != sp->rs_finfo->rf_vp) { 7658 rfs4_state_rele(sp); 7659 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7660 goto out; 7661 } 7662 7663 /* hold off other access to open_owner while we tinker */ 7664 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7665 7666 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7667 case NFS4_CHECK_STATEID_OKAY: 7668 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7669 resop) != 0) { 7670 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7671 break; 7672 } 7673 /* 7674 * If it is the appropriate stateid and determined to 7675 * be "OKAY" then this means that the stateid does not 7676 * need to be confirmed and the client is in error for 7677 * sending an OPEN_CONFIRM. 7678 */ 7679 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7680 break; 7681 case NFS4_CHECK_STATEID_OLD: 7682 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7683 break; 7684 case NFS4_CHECK_STATEID_BAD: 7685 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7686 break; 7687 case NFS4_CHECK_STATEID_EXPIRED: 7688 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7689 break; 7690 case NFS4_CHECK_STATEID_CLOSED: 7691 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7692 break; 7693 case NFS4_CHECK_STATEID_REPLAY: 7694 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7695 resop)) { 7696 case NFS4_CHKSEQ_OKAY: 7697 /* 7698 * This is replayed stateid; if seqid matches 7699 * next expected, then client is using wrong seqid. 7700 */ 7701 /* fall through */ 7702 case NFS4_CHKSEQ_BAD: 7703 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7704 break; 7705 case NFS4_CHKSEQ_REPLAY: 7706 /* 7707 * Note this case is the duplicate case so 7708 * resp->status is already set. 7709 */ 7710 *cs->statusp = resp->status; 7711 rfs4_update_lease(sp->rs_owner->ro_client); 7712 break; 7713 } 7714 break; 7715 case NFS4_CHECK_STATEID_UNCONFIRMED: 7716 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7717 resop) != NFS4_CHKSEQ_OKAY) { 7718 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7719 break; 7720 } 7721 *cs->statusp = resp->status = NFS4_OK; 7722 7723 next_stateid(&sp->rs_stateid); 7724 resp->open_stateid = sp->rs_stateid.stateid; 7725 sp->rs_owner->ro_need_confirm = FALSE; 7726 rfs4_update_lease(sp->rs_owner->ro_client); 7727 rfs4_update_open_sequence(sp->rs_owner); 7728 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7729 break; 7730 default: 7731 ASSERT(FALSE); 7732 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7733 break; 7734 } 7735 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7736 rfs4_state_rele(sp); 7737 7738 out: 7739 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7740 OPEN_CONFIRM4res *, resp); 7741 } 7742 7743 /*ARGSUSED*/ 7744 void 7745 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7746 struct svc_req *req, struct compound_state *cs) 7747 { 7748 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7749 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7750 uint32_t access = args->share_access; 7751 uint32_t deny = args->share_deny; 7752 nfsstat4 status; 7753 rfs4_state_t *sp; 7754 rfs4_file_t *fp; 7755 int fflags = 0; 7756 7757 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7758 OPEN_DOWNGRADE4args *, args); 7759 7760 if (cs->vp == NULL) { 7761 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7762 goto out; 7763 } 7764 7765 if (cs->vp->v_type != VREG) { 7766 *cs->statusp = resp->status = NFS4ERR_INVAL; 7767 return; 7768 } 7769 7770 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7771 if (status != NFS4_OK) { 7772 *cs->statusp = resp->status = status; 7773 goto out; 7774 } 7775 7776 /* Ensure specified filehandle matches */ 7777 if (cs->vp != sp->rs_finfo->rf_vp) { 7778 rfs4_state_rele(sp); 7779 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7780 goto out; 7781 } 7782 7783 /* hold off other access to open_owner while we tinker */ 7784 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7785 7786 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7787 case NFS4_CHECK_STATEID_OKAY: 7788 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7789 resop) != NFS4_CHKSEQ_OKAY) { 7790 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7791 goto end; 7792 } 7793 break; 7794 case NFS4_CHECK_STATEID_OLD: 7795 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7796 goto end; 7797 case NFS4_CHECK_STATEID_BAD: 7798 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7799 goto end; 7800 case NFS4_CHECK_STATEID_EXPIRED: 7801 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7802 goto end; 7803 case NFS4_CHECK_STATEID_CLOSED: 7804 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7805 goto end; 7806 case NFS4_CHECK_STATEID_UNCONFIRMED: 7807 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7808 goto end; 7809 case NFS4_CHECK_STATEID_REPLAY: 7810 /* Check the sequence id for the open owner */ 7811 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7812 resop)) { 7813 case NFS4_CHKSEQ_OKAY: 7814 /* 7815 * This is replayed stateid; if seqid matches 7816 * next expected, then client is using wrong seqid. 7817 */ 7818 /* fall through */ 7819 case NFS4_CHKSEQ_BAD: 7820 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7821 goto end; 7822 case NFS4_CHKSEQ_REPLAY: 7823 /* 7824 * Note this case is the duplicate case so 7825 * resp->status is already set. 7826 */ 7827 *cs->statusp = resp->status; 7828 rfs4_update_lease(sp->rs_owner->ro_client); 7829 goto end; 7830 } 7831 break; 7832 default: 7833 ASSERT(FALSE); 7834 break; 7835 } 7836 7837 rfs4_dbe_lock(sp->rs_dbe); 7838 /* 7839 * Check that the new access modes and deny modes are valid. 7840 * Check that no invalid bits are set. 7841 */ 7842 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7843 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7844 *cs->statusp = resp->status = NFS4ERR_INVAL; 7845 rfs4_update_open_sequence(sp->rs_owner); 7846 rfs4_dbe_unlock(sp->rs_dbe); 7847 goto end; 7848 } 7849 7850 /* 7851 * The new modes must be a subset of the current modes and 7852 * the access must specify at least one mode. To test that 7853 * the new mode is a subset of the current modes we bitwise 7854 * AND them together and check that the result equals the new 7855 * mode. For example: 7856 * New mode, access == R and current mode, sp->rs_open_access == RW 7857 * access & sp->rs_open_access == R == access, so the new access mode 7858 * is valid. Consider access == RW, sp->rs_open_access = R 7859 * access & sp->rs_open_access == R != access, so the new access mode 7860 * is invalid. 7861 */ 7862 if ((access & sp->rs_open_access) != access || 7863 (deny & sp->rs_open_deny) != deny || 7864 (access & 7865 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7866 *cs->statusp = resp->status = NFS4ERR_INVAL; 7867 rfs4_update_open_sequence(sp->rs_owner); 7868 rfs4_dbe_unlock(sp->rs_dbe); 7869 goto end; 7870 } 7871 7872 /* 7873 * Release any share locks associated with this stateID. 7874 * Strictly speaking, this violates the spec because the 7875 * spec effectively requires that open downgrade be atomic. 7876 * At present, fs_shrlock does not have this capability. 7877 */ 7878 (void) rfs4_unshare(sp); 7879 7880 status = rfs4_share(sp, access, deny); 7881 if (status != NFS4_OK) { 7882 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7883 rfs4_update_open_sequence(sp->rs_owner); 7884 rfs4_dbe_unlock(sp->rs_dbe); 7885 goto end; 7886 } 7887 7888 fp = sp->rs_finfo; 7889 rfs4_dbe_lock(fp->rf_dbe); 7890 7891 /* 7892 * If the current mode has deny read and the new mode 7893 * does not, decrement the number of deny read mode bits 7894 * and if it goes to zero turn off the deny read bit 7895 * on the file. 7896 */ 7897 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7898 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7899 fp->rf_deny_read--; 7900 if (fp->rf_deny_read == 0) 7901 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 7902 } 7903 7904 /* 7905 * If the current mode has deny write and the new mode 7906 * does not, decrement the number of deny write mode bits 7907 * and if it goes to zero turn off the deny write bit 7908 * on the file. 7909 */ 7910 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 7911 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7912 fp->rf_deny_write--; 7913 if (fp->rf_deny_write == 0) 7914 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7915 } 7916 7917 /* 7918 * If the current mode has access read and the new mode 7919 * does not, decrement the number of access read mode bits 7920 * and if it goes to zero turn off the access read bit 7921 * on the file. set fflags to FREAD for the call to 7922 * vn_open_downgrade(). 7923 */ 7924 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 7925 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7926 fp->rf_access_read--; 7927 if (fp->rf_access_read == 0) 7928 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 7929 fflags |= FREAD; 7930 } 7931 7932 /* 7933 * If the current mode has access write and the new mode 7934 * does not, decrement the number of access write mode bits 7935 * and if it goes to zero turn off the access write bit 7936 * on the file. set fflags to FWRITE for the call to 7937 * vn_open_downgrade(). 7938 */ 7939 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 7940 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7941 fp->rf_access_write--; 7942 if (fp->rf_access_write == 0) 7943 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7944 fflags |= FWRITE; 7945 } 7946 7947 /* Check that the file is still accessible */ 7948 ASSERT(fp->rf_share_access); 7949 7950 rfs4_dbe_unlock(fp->rf_dbe); 7951 7952 /* now set the new open access and deny modes */ 7953 sp->rs_open_access = access; 7954 sp->rs_open_deny = deny; 7955 7956 /* 7957 * we successfully downgraded the share lock, now we need to downgrade 7958 * the open. it is possible that the downgrade was only for a deny 7959 * mode and we have nothing else to do. 7960 */ 7961 if ((fflags & (FREAD|FWRITE)) != 0) 7962 vn_open_downgrade(cs->vp, fflags); 7963 7964 /* Update the stateid */ 7965 next_stateid(&sp->rs_stateid); 7966 resp->open_stateid = sp->rs_stateid.stateid; 7967 7968 rfs4_dbe_unlock(sp->rs_dbe); 7969 7970 *cs->statusp = resp->status = NFS4_OK; 7971 /* Update the lease */ 7972 rfs4_update_lease(sp->rs_owner->ro_client); 7973 /* And the sequence */ 7974 rfs4_update_open_sequence(sp->rs_owner); 7975 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7976 7977 end: 7978 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7979 rfs4_state_rele(sp); 7980 out: 7981 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7982 OPEN_DOWNGRADE4res *, resp); 7983 } 7984 7985 static void * 7986 memstr(const void *s1, const char *s2, size_t n) 7987 { 7988 size_t l = strlen(s2); 7989 char *p = (char *)s1; 7990 7991 while (n >= l) { 7992 if (bcmp(p, s2, l) == 0) 7993 return (p); 7994 p++; 7995 n--; 7996 } 7997 7998 return (NULL); 7999 } 8000 8001 /* 8002 * The logic behind this function is detailed in the NFSv4 RFC in the 8003 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 8004 * that section for explicit guidance to server behavior for 8005 * SETCLIENTID. 8006 */ 8007 void 8008 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 8009 struct svc_req *req, struct compound_state *cs) 8010 { 8011 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 8012 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 8013 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 8014 rfs4_clntip_t *ci; 8015 bool_t create; 8016 char *addr, *netid; 8017 int len; 8018 8019 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 8020 SETCLIENTID4args *, args); 8021 retry: 8022 newcp = cp_confirmed = cp_unconfirmed = NULL; 8023 8024 /* 8025 * Save the caller's IP address 8026 */ 8027 args->client.cl_addr = 8028 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 8029 8030 /* 8031 * Record if it is a Solaris client that cannot handle referrals. 8032 */ 8033 if (memstr(args->client.id_val, "Solaris", args->client.id_len) && 8034 !memstr(args->client.id_val, "+referrals", args->client.id_len)) { 8035 /* Add a "yes, it's downrev" record */ 8036 create = TRUE; 8037 ci = rfs4_find_clntip(args->client.cl_addr, &create); 8038 ASSERT(ci != NULL); 8039 rfs4_dbe_rele(ci->ri_dbe); 8040 } else { 8041 /* Remove any previous record */ 8042 rfs4_invalidate_clntip(args->client.cl_addr); 8043 } 8044 8045 /* 8046 * In search of an EXISTING client matching the incoming 8047 * request to establish a new client identifier at the server 8048 */ 8049 create = TRUE; 8050 cp = rfs4_findclient(&args->client, &create, NULL); 8051 8052 /* Should never happen */ 8053 ASSERT(cp != NULL); 8054 8055 if (cp == NULL) { 8056 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8057 goto out; 8058 } 8059 8060 /* 8061 * Easiest case. Client identifier is newly created and is 8062 * unconfirmed. Also note that for this case, no other 8063 * entries exist for the client identifier. Nothing else to 8064 * check. Just setup the response and respond. 8065 */ 8066 if (create) { 8067 *cs->statusp = res->status = NFS4_OK; 8068 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 8069 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8070 cp->rc_confirm_verf; 8071 /* Setup callback information; CB_NULL confirmation later */ 8072 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 8073 8074 rfs4_client_rele(cp); 8075 goto out; 8076 } 8077 8078 /* 8079 * An existing, confirmed client may exist but it may not have 8080 * been active for at least one lease period. If so, then 8081 * "close" the client and create a new client identifier 8082 */ 8083 if (rfs4_lease_expired(cp)) { 8084 rfs4_client_close(cp); 8085 goto retry; 8086 } 8087 8088 if (cp->rc_need_confirm == TRUE) 8089 cp_unconfirmed = cp; 8090 else 8091 cp_confirmed = cp; 8092 8093 cp = NULL; 8094 8095 /* 8096 * We have a confirmed client, now check for an 8097 * unconfimred entry 8098 */ 8099 if (cp_confirmed) { 8100 /* If creds don't match then client identifier is inuse */ 8101 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 8102 rfs4_cbinfo_t *cbp; 8103 /* 8104 * Some one else has established this client 8105 * id. Try and say * who they are. We will use 8106 * the call back address supplied by * the 8107 * first client. 8108 */ 8109 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8110 8111 addr = netid = NULL; 8112 8113 cbp = &cp_confirmed->rc_cbinfo; 8114 if (cbp->cb_callback.cb_location.r_addr && 8115 cbp->cb_callback.cb_location.r_netid) { 8116 cb_client4 *cbcp = &cbp->cb_callback; 8117 8118 len = strlen(cbcp->cb_location.r_addr)+1; 8119 addr = kmem_alloc(len, KM_SLEEP); 8120 bcopy(cbcp->cb_location.r_addr, addr, len); 8121 len = strlen(cbcp->cb_location.r_netid)+1; 8122 netid = kmem_alloc(len, KM_SLEEP); 8123 bcopy(cbcp->cb_location.r_netid, netid, len); 8124 } 8125 8126 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8127 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8128 8129 rfs4_client_rele(cp_confirmed); 8130 } 8131 8132 /* 8133 * Confirmed, creds match, and verifier matches; must 8134 * be an update of the callback info 8135 */ 8136 if (cp_confirmed->rc_nfs_client.verifier == 8137 args->client.verifier) { 8138 /* Setup callback information */ 8139 rfs4_client_setcb(cp_confirmed, &args->callback, 8140 args->callback_ident); 8141 8142 /* everything okay -- move ahead */ 8143 *cs->statusp = res->status = NFS4_OK; 8144 res->SETCLIENTID4res_u.resok4.clientid = 8145 cp_confirmed->rc_clientid; 8146 8147 /* update the confirm_verifier and return it */ 8148 rfs4_client_scv_next(cp_confirmed); 8149 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8150 cp_confirmed->rc_confirm_verf; 8151 8152 rfs4_client_rele(cp_confirmed); 8153 goto out; 8154 } 8155 8156 /* 8157 * Creds match but the verifier doesn't. Must search 8158 * for an unconfirmed client that would be replaced by 8159 * this request. 8160 */ 8161 create = FALSE; 8162 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8163 cp_confirmed); 8164 } 8165 8166 /* 8167 * At this point, we have taken care of the brand new client 8168 * struct, INUSE case, update of an existing, and confirmed 8169 * client struct. 8170 */ 8171 8172 /* 8173 * check to see if things have changed while we originally 8174 * picked up the client struct. If they have, then return and 8175 * retry the processing of this SETCLIENTID request. 8176 */ 8177 if (cp_unconfirmed) { 8178 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8179 if (!cp_unconfirmed->rc_need_confirm) { 8180 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8181 rfs4_client_rele(cp_unconfirmed); 8182 if (cp_confirmed) 8183 rfs4_client_rele(cp_confirmed); 8184 goto retry; 8185 } 8186 /* do away with the old unconfirmed one */ 8187 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8188 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8189 rfs4_client_rele(cp_unconfirmed); 8190 cp_unconfirmed = NULL; 8191 } 8192 8193 /* 8194 * This search will temporarily hide the confirmed client 8195 * struct while a new client struct is created as the 8196 * unconfirmed one. 8197 */ 8198 create = TRUE; 8199 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8200 8201 ASSERT(newcp != NULL); 8202 8203 if (newcp == NULL) { 8204 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8205 rfs4_client_rele(cp_confirmed); 8206 goto out; 8207 } 8208 8209 /* 8210 * If one was not created, then a similar request must be in 8211 * process so release and start over with this one 8212 */ 8213 if (create != TRUE) { 8214 rfs4_client_rele(newcp); 8215 if (cp_confirmed) 8216 rfs4_client_rele(cp_confirmed); 8217 goto retry; 8218 } 8219 8220 *cs->statusp = res->status = NFS4_OK; 8221 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8222 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8223 newcp->rc_confirm_verf; 8224 /* Setup callback information; CB_NULL confirmation later */ 8225 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8226 8227 newcp->rc_cp_confirmed = cp_confirmed; 8228 8229 rfs4_client_rele(newcp); 8230 8231 out: 8232 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8233 SETCLIENTID4res *, res); 8234 } 8235 8236 /*ARGSUSED*/ 8237 void 8238 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8239 struct svc_req *req, struct compound_state *cs) 8240 { 8241 SETCLIENTID_CONFIRM4args *args = 8242 &argop->nfs_argop4_u.opsetclientid_confirm; 8243 SETCLIENTID_CONFIRM4res *res = 8244 &resop->nfs_resop4_u.opsetclientid_confirm; 8245 rfs4_client_t *cp, *cptoclose = NULL; 8246 nfs4_srv_t *nsrv4; 8247 8248 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8249 struct compound_state *, cs, 8250 SETCLIENTID_CONFIRM4args *, args); 8251 8252 nsrv4 = nfs4_get_srv(); 8253 *cs->statusp = res->status = NFS4_OK; 8254 8255 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8256 8257 if (cp == NULL) { 8258 *cs->statusp = res->status = 8259 rfs4_check_clientid(&args->clientid, 1); 8260 goto out; 8261 } 8262 8263 if (!creds_ok(cp, req, cs)) { 8264 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8265 rfs4_client_rele(cp); 8266 goto out; 8267 } 8268 8269 /* If the verifier doesn't match, the record doesn't match */ 8270 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8271 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8272 rfs4_client_rele(cp); 8273 goto out; 8274 } 8275 8276 rfs4_dbe_lock(cp->rc_dbe); 8277 cp->rc_need_confirm = FALSE; 8278 if (cp->rc_cp_confirmed) { 8279 cptoclose = cp->rc_cp_confirmed; 8280 cptoclose->rc_ss_remove = 1; 8281 cp->rc_cp_confirmed = NULL; 8282 } 8283 8284 /* 8285 * Update the client's associated server instance, if it's changed 8286 * since the client was created. 8287 */ 8288 if (rfs4_servinst(cp) != nsrv4->nfs4_cur_servinst) 8289 rfs4_servinst_assign(nsrv4, cp, nsrv4->nfs4_cur_servinst); 8290 8291 /* 8292 * Record clientid in stable storage. 8293 * Must be done after server instance has been assigned. 8294 */ 8295 rfs4_ss_clid(nsrv4, cp); 8296 8297 rfs4_dbe_unlock(cp->rc_dbe); 8298 8299 if (cptoclose) 8300 /* don't need to rele, client_close does it */ 8301 rfs4_client_close(cptoclose); 8302 8303 /* If needed, initiate CB_NULL call for callback path */ 8304 rfs4_deleg_cb_check(cp); 8305 rfs4_update_lease(cp); 8306 8307 /* 8308 * Check to see if client can perform reclaims 8309 */ 8310 rfs4_ss_chkclid(nsrv4, cp); 8311 8312 rfs4_client_rele(cp); 8313 8314 out: 8315 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8316 struct compound_state *, cs, 8317 SETCLIENTID_CONFIRM4 *, res); 8318 } 8319 8320 8321 /*ARGSUSED*/ 8322 void 8323 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8324 struct svc_req *req, struct compound_state *cs) 8325 { 8326 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8327 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8328 rfs4_state_t *sp; 8329 nfsstat4 status; 8330 8331 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8332 CLOSE4args *, args); 8333 8334 if (cs->vp == NULL) { 8335 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8336 goto out; 8337 } 8338 8339 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8340 if (status != NFS4_OK) { 8341 *cs->statusp = resp->status = status; 8342 goto out; 8343 } 8344 8345 /* Ensure specified filehandle matches */ 8346 if (cs->vp != sp->rs_finfo->rf_vp) { 8347 rfs4_state_rele(sp); 8348 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8349 goto out; 8350 } 8351 8352 /* hold off other access to open_owner while we tinker */ 8353 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8354 8355 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8356 case NFS4_CHECK_STATEID_OKAY: 8357 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8358 resop) != NFS4_CHKSEQ_OKAY) { 8359 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8360 goto end; 8361 } 8362 break; 8363 case NFS4_CHECK_STATEID_OLD: 8364 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8365 goto end; 8366 case NFS4_CHECK_STATEID_BAD: 8367 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8368 goto end; 8369 case NFS4_CHECK_STATEID_EXPIRED: 8370 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8371 goto end; 8372 case NFS4_CHECK_STATEID_CLOSED: 8373 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8374 goto end; 8375 case NFS4_CHECK_STATEID_UNCONFIRMED: 8376 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8377 goto end; 8378 case NFS4_CHECK_STATEID_REPLAY: 8379 /* Check the sequence id for the open owner */ 8380 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8381 resop)) { 8382 case NFS4_CHKSEQ_OKAY: 8383 /* 8384 * This is replayed stateid; if seqid matches 8385 * next expected, then client is using wrong seqid. 8386 */ 8387 /* FALL THROUGH */ 8388 case NFS4_CHKSEQ_BAD: 8389 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8390 goto end; 8391 case NFS4_CHKSEQ_REPLAY: 8392 /* 8393 * Note this case is the duplicate case so 8394 * resp->status is already set. 8395 */ 8396 *cs->statusp = resp->status; 8397 rfs4_update_lease(sp->rs_owner->ro_client); 8398 goto end; 8399 } 8400 break; 8401 default: 8402 ASSERT(FALSE); 8403 break; 8404 } 8405 8406 rfs4_dbe_lock(sp->rs_dbe); 8407 8408 /* Update the stateid. */ 8409 next_stateid(&sp->rs_stateid); 8410 resp->open_stateid = sp->rs_stateid.stateid; 8411 8412 rfs4_dbe_unlock(sp->rs_dbe); 8413 8414 rfs4_update_lease(sp->rs_owner->ro_client); 8415 rfs4_update_open_sequence(sp->rs_owner); 8416 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8417 8418 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8419 8420 *cs->statusp = resp->status = status; 8421 8422 end: 8423 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8424 rfs4_state_rele(sp); 8425 out: 8426 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8427 CLOSE4res *, resp); 8428 } 8429 8430 /* 8431 * Manage the counts on the file struct and close all file locks 8432 */ 8433 /*ARGSUSED*/ 8434 void 8435 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8436 bool_t close_of_client) 8437 { 8438 rfs4_file_t *fp = sp->rs_finfo; 8439 rfs4_lo_state_t *lsp; 8440 int fflags = 0; 8441 8442 /* 8443 * If this call is part of the larger closing down of client 8444 * state then it is just easier to release all locks 8445 * associated with this client instead of going through each 8446 * individual file and cleaning locks there. 8447 */ 8448 if (close_of_client) { 8449 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8450 !list_is_empty(&sp->rs_lostatelist) && 8451 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8452 /* Is the PxFS kernel module loaded? */ 8453 if (lm_remove_file_locks != NULL) { 8454 int new_sysid; 8455 8456 /* Encode the cluster nodeid in new sysid */ 8457 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8458 lm_set_nlmid_flk(&new_sysid); 8459 8460 /* 8461 * This PxFS routine removes file locks for a 8462 * client over all nodes of a cluster. 8463 */ 8464 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8465 "lm_remove_file_locks(sysid=0x%x)\n", 8466 new_sysid)); 8467 (*lm_remove_file_locks)(new_sysid); 8468 } else { 8469 struct flock64 flk; 8470 8471 /* Release all locks for this client */ 8472 flk.l_type = F_UNLKSYS; 8473 flk.l_whence = 0; 8474 flk.l_start = 0; 8475 flk.l_len = 0; 8476 flk.l_sysid = 8477 sp->rs_owner->ro_client->rc_sysidt; 8478 flk.l_pid = 0; 8479 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8480 &flk, F_REMOTELOCK | FREAD | FWRITE, 8481 (u_offset_t)0, NULL, CRED(), NULL); 8482 } 8483 8484 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8485 } 8486 } 8487 8488 /* 8489 * Release all locks on this file by this lock owner or at 8490 * least mark the locks as having been released 8491 */ 8492 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8493 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8494 lsp->rls_locks_cleaned = TRUE; 8495 8496 /* Was this already taken care of above? */ 8497 if (!close_of_client && 8498 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8499 (void) cleanlocks(sp->rs_finfo->rf_vp, 8500 lsp->rls_locker->rl_pid, 8501 lsp->rls_locker->rl_client->rc_sysidt); 8502 } 8503 8504 /* 8505 * Release any shrlocks associated with this open state ID. 8506 * This must be done before the rfs4_state gets marked closed. 8507 */ 8508 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8509 (void) rfs4_unshare(sp); 8510 8511 if (sp->rs_open_access) { 8512 rfs4_dbe_lock(fp->rf_dbe); 8513 8514 /* 8515 * Decrement the count for each access and deny bit that this 8516 * state has contributed to the file. 8517 * If the file counts go to zero 8518 * clear the appropriate bit in the appropriate mask. 8519 */ 8520 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8521 fp->rf_access_read--; 8522 fflags |= FREAD; 8523 if (fp->rf_access_read == 0) 8524 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8525 } 8526 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8527 fp->rf_access_write--; 8528 fflags |= FWRITE; 8529 if (fp->rf_access_write == 0) 8530 fp->rf_share_access &= 8531 ~OPEN4_SHARE_ACCESS_WRITE; 8532 } 8533 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8534 fp->rf_deny_read--; 8535 if (fp->rf_deny_read == 0) 8536 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8537 } 8538 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8539 fp->rf_deny_write--; 8540 if (fp->rf_deny_write == 0) 8541 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8542 } 8543 8544 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8545 8546 rfs4_dbe_unlock(fp->rf_dbe); 8547 8548 sp->rs_open_access = 0; 8549 sp->rs_open_deny = 0; 8550 } 8551 } 8552 8553 /* 8554 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8555 */ 8556 static nfsstat4 8557 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8558 { 8559 rfs4_lockowner_t *lo; 8560 rfs4_client_t *cp; 8561 uint32_t len; 8562 8563 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8564 if (lo != NULL) { 8565 cp = lo->rl_client; 8566 if (rfs4_lease_expired(cp)) { 8567 rfs4_lockowner_rele(lo); 8568 rfs4_dbe_hold(cp->rc_dbe); 8569 rfs4_client_close(cp); 8570 return (NFS4ERR_EXPIRED); 8571 } 8572 dp->owner.clientid = lo->rl_owner.clientid; 8573 len = lo->rl_owner.owner_len; 8574 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8575 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8576 dp->owner.owner_len = len; 8577 rfs4_lockowner_rele(lo); 8578 goto finish; 8579 } 8580 8581 /* 8582 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8583 * of the client id contain the boot time for a NFS4 lock. So we 8584 * fabricate and identity by setting clientid to the sysid, and 8585 * the lock owner to the pid. 8586 */ 8587 dp->owner.clientid = flk->l_sysid; 8588 len = sizeof (pid_t); 8589 dp->owner.owner_len = len; 8590 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8591 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8592 finish: 8593 dp->offset = flk->l_start; 8594 dp->length = flk->l_len; 8595 8596 if (flk->l_type == F_RDLCK) 8597 dp->locktype = READ_LT; 8598 else if (flk->l_type == F_WRLCK) 8599 dp->locktype = WRITE_LT; 8600 else 8601 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8602 8603 return (NFS4_OK); 8604 } 8605 8606 /* 8607 * The NFSv4.0 LOCK operation does not support the blocking lock (at the 8608 * NFSv4.0 protocol level) so the client needs to resend the LOCK request in a 8609 * case the lock is denied by the NFSv4.0 server. NFSv4.0 clients are prepared 8610 * for that (obviously); they are sending the LOCK requests with some delays 8611 * between the attempts. See nfs4frlock() and nfs4_block_and_wait() for the 8612 * locking and delay implementation at the client side. 8613 * 8614 * To make the life of the clients easier, the NFSv4.0 server tries to do some 8615 * fast retries on its own (the for loop below) in a hope the lock will be 8616 * available soon. And if not, the client won't need to resend the LOCK 8617 * requests so fast to check the lock availability. This basically saves some 8618 * network traffic and tries to make sure the client gets the lock ASAP. 8619 */ 8620 static int 8621 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8622 { 8623 int error; 8624 struct flock64 flk; 8625 int i; 8626 clock_t delaytime; 8627 int cmd; 8628 int spin_cnt = 0; 8629 8630 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8631 retry: 8632 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8633 8634 for (i = 0; i < rfs4_maxlock_tries; i++) { 8635 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8636 error = VOP_FRLOCK(vp, cmd, 8637 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8638 8639 if (error != EAGAIN && error != EACCES) 8640 break; 8641 8642 if (i < rfs4_maxlock_tries - 1) { 8643 delay(delaytime); 8644 delaytime *= 2; 8645 } 8646 } 8647 8648 if (error == EAGAIN || error == EACCES) { 8649 /* Get the owner of the lock */ 8650 flk = *flock; 8651 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8652 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 0, NULL, cred, 8653 NULL) == 0) { 8654 /* 8655 * There's a race inherent in the current VOP_FRLOCK 8656 * design where: 8657 * a: "other guy" takes a lock that conflicts with a 8658 * lock we want 8659 * b: we attempt to take our lock (non-blocking) and 8660 * the attempt fails. 8661 * c: "other guy" releases the conflicting lock 8662 * d: we ask what lock conflicts with the lock we want, 8663 * getting F_UNLCK (no lock blocks us) 8664 * 8665 * If we retry the non-blocking lock attempt in this 8666 * case (restart at step 'b') there's some possibility 8667 * that many such attempts might fail. However a test 8668 * designed to actually provoke this race shows that 8669 * the vast majority of cases require no retry, and 8670 * only a few took as many as three retries. Here's 8671 * the test outcome: 8672 * 8673 * number of retries how many times we needed 8674 * that many retries 8675 * 0 79461 8676 * 1 862 8677 * 2 49 8678 * 3 5 8679 * 8680 * Given those empirical results, we arbitrarily limit 8681 * the retry count to ten. 8682 * 8683 * If we actually make to ten retries and give up, 8684 * nothing catastrophic happens, but we're unable to 8685 * return the information about the conflicting lock to 8686 * the NFS client. That's an acceptable trade off vs. 8687 * letting this retry loop run forever. 8688 */ 8689 if (flk.l_type == F_UNLCK) { 8690 if (spin_cnt++ < 10) { 8691 /* No longer locked, retry */ 8692 goto retry; 8693 } 8694 } else { 8695 *flock = flk; 8696 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8697 F_GETLK, &flk); 8698 } 8699 } 8700 } 8701 8702 return (error); 8703 } 8704 8705 /*ARGSUSED*/ 8706 static nfsstat4 8707 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8708 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8709 { 8710 nfsstat4 status; 8711 rfs4_lockowner_t *lo = lsp->rls_locker; 8712 rfs4_state_t *sp = lsp->rls_state; 8713 struct flock64 flock; 8714 int16_t ltype; 8715 int flag; 8716 int error; 8717 sysid_t sysid; 8718 LOCK4res *lres; 8719 vnode_t *vp; 8720 8721 if (rfs4_lease_expired(lo->rl_client)) { 8722 return (NFS4ERR_EXPIRED); 8723 } 8724 8725 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8726 return (status); 8727 8728 /* Check for zero length. To lock to end of file use all ones for V4 */ 8729 if (length == 0) 8730 return (NFS4ERR_INVAL); 8731 else if (length == (length4)(~0)) 8732 length = 0; /* Posix to end of file */ 8733 8734 retry: 8735 rfs4_dbe_lock(sp->rs_dbe); 8736 if (sp->rs_closed == TRUE) { 8737 rfs4_dbe_unlock(sp->rs_dbe); 8738 return (NFS4ERR_OLD_STATEID); 8739 } 8740 8741 if (resop->resop != OP_LOCKU) { 8742 switch (locktype) { 8743 case READ_LT: 8744 case READW_LT: 8745 if ((sp->rs_share_access 8746 & OPEN4_SHARE_ACCESS_READ) == 0) { 8747 rfs4_dbe_unlock(sp->rs_dbe); 8748 8749 return (NFS4ERR_OPENMODE); 8750 } 8751 ltype = F_RDLCK; 8752 break; 8753 case WRITE_LT: 8754 case WRITEW_LT: 8755 if ((sp->rs_share_access 8756 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8757 rfs4_dbe_unlock(sp->rs_dbe); 8758 8759 return (NFS4ERR_OPENMODE); 8760 } 8761 ltype = F_WRLCK; 8762 break; 8763 } 8764 } else 8765 ltype = F_UNLCK; 8766 8767 flock.l_type = ltype; 8768 flock.l_whence = 0; /* SEEK_SET */ 8769 flock.l_start = offset; 8770 flock.l_len = length; 8771 flock.l_sysid = sysid; 8772 flock.l_pid = lsp->rls_locker->rl_pid; 8773 8774 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8775 if (flock.l_len < 0 || flock.l_start < 0) { 8776 rfs4_dbe_unlock(sp->rs_dbe); 8777 return (NFS4ERR_INVAL); 8778 } 8779 8780 /* 8781 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8782 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8783 */ 8784 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8785 8786 vp = sp->rs_finfo->rf_vp; 8787 VN_HOLD(vp); 8788 8789 /* 8790 * We need to unlock sp before we call the underlying filesystem to 8791 * acquire the file lock. 8792 */ 8793 rfs4_dbe_unlock(sp->rs_dbe); 8794 8795 error = setlock(vp, &flock, flag, cred); 8796 8797 /* 8798 * Make sure the file is still open. In a case the file was closed in 8799 * the meantime, clean the lock we acquired using the setlock() call 8800 * above, and return the appropriate error. 8801 */ 8802 rfs4_dbe_lock(sp->rs_dbe); 8803 if (sp->rs_closed == TRUE) { 8804 cleanlocks(vp, lsp->rls_locker->rl_pid, sysid); 8805 rfs4_dbe_unlock(sp->rs_dbe); 8806 8807 VN_RELE(vp); 8808 8809 return (NFS4ERR_OLD_STATEID); 8810 } 8811 rfs4_dbe_unlock(sp->rs_dbe); 8812 8813 VN_RELE(vp); 8814 8815 if (error == 0) { 8816 rfs4_dbe_lock(lsp->rls_dbe); 8817 next_stateid(&lsp->rls_lockid); 8818 rfs4_dbe_unlock(lsp->rls_dbe); 8819 } 8820 8821 /* 8822 * N.B. We map error values to nfsv4 errors. This is differrent 8823 * than puterrno4 routine. 8824 */ 8825 switch (error) { 8826 case 0: 8827 status = NFS4_OK; 8828 break; 8829 case EAGAIN: 8830 case EACCES: /* Old value */ 8831 /* Can only get here if op is OP_LOCK */ 8832 ASSERT(resop->resop == OP_LOCK); 8833 lres = &resop->nfs_resop4_u.oplock; 8834 status = NFS4ERR_DENIED; 8835 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8836 == NFS4ERR_EXPIRED) 8837 goto retry; 8838 break; 8839 case ENOLCK: 8840 status = NFS4ERR_DELAY; 8841 break; 8842 case EOVERFLOW: 8843 status = NFS4ERR_INVAL; 8844 break; 8845 case EINVAL: 8846 status = NFS4ERR_NOTSUPP; 8847 break; 8848 default: 8849 status = NFS4ERR_SERVERFAULT; 8850 break; 8851 } 8852 8853 return (status); 8854 } 8855 8856 /*ARGSUSED*/ 8857 void 8858 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8859 struct svc_req *req, struct compound_state *cs) 8860 { 8861 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8862 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8863 nfsstat4 status; 8864 stateid4 *stateid; 8865 rfs4_lockowner_t *lo; 8866 rfs4_client_t *cp; 8867 rfs4_state_t *sp = NULL; 8868 rfs4_lo_state_t *lsp = NULL; 8869 bool_t ls_sw_held = FALSE; 8870 bool_t create = TRUE; 8871 bool_t lcreate = TRUE; 8872 bool_t dup_lock = FALSE; 8873 int rc; 8874 8875 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8876 LOCK4args *, args); 8877 8878 if (cs->vp == NULL) { 8879 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8880 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8881 cs, LOCK4res *, resp); 8882 return; 8883 } 8884 8885 if (args->locker.new_lock_owner) { 8886 /* Create a new lockowner for this instance */ 8887 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8888 8889 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8890 8891 stateid = &olo->open_stateid; 8892 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8893 if (status != NFS4_OK) { 8894 NFS4_DEBUG(rfs4_debug, 8895 (CE_NOTE, "Get state failed in lock %d", status)); 8896 *cs->statusp = resp->status = status; 8897 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8898 cs, LOCK4res *, resp); 8899 return; 8900 } 8901 8902 /* Ensure specified filehandle matches */ 8903 if (cs->vp != sp->rs_finfo->rf_vp) { 8904 rfs4_state_rele(sp); 8905 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8906 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8907 cs, LOCK4res *, resp); 8908 return; 8909 } 8910 8911 /* hold off other access to open_owner while we tinker */ 8912 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8913 8914 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8915 case NFS4_CHECK_STATEID_OLD: 8916 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8917 goto end; 8918 case NFS4_CHECK_STATEID_BAD: 8919 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8920 goto end; 8921 case NFS4_CHECK_STATEID_EXPIRED: 8922 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8923 goto end; 8924 case NFS4_CHECK_STATEID_UNCONFIRMED: 8925 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8926 goto end; 8927 case NFS4_CHECK_STATEID_CLOSED: 8928 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8929 goto end; 8930 case NFS4_CHECK_STATEID_OKAY: 8931 case NFS4_CHECK_STATEID_REPLAY: 8932 switch (rfs4_check_olo_seqid(olo->open_seqid, 8933 sp->rs_owner, resop)) { 8934 case NFS4_CHKSEQ_OKAY: 8935 if (rc == NFS4_CHECK_STATEID_OKAY) 8936 break; 8937 /* 8938 * This is replayed stateid; if seqid 8939 * matches next expected, then client 8940 * is using wrong seqid. 8941 */ 8942 /* FALLTHROUGH */ 8943 case NFS4_CHKSEQ_BAD: 8944 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8945 goto end; 8946 case NFS4_CHKSEQ_REPLAY: 8947 /* This is a duplicate LOCK request */ 8948 dup_lock = TRUE; 8949 8950 /* 8951 * For a duplicate we do not want to 8952 * create a new lockowner as it should 8953 * already exist. 8954 * Turn off the lockowner create flag. 8955 */ 8956 lcreate = FALSE; 8957 } 8958 break; 8959 } 8960 8961 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8962 if (lo == NULL) { 8963 NFS4_DEBUG(rfs4_debug, 8964 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8965 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8966 goto end; 8967 } 8968 8969 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8970 if (lsp == NULL) { 8971 rfs4_update_lease(sp->rs_owner->ro_client); 8972 /* 8973 * Only update theh open_seqid if this is not 8974 * a duplicate request 8975 */ 8976 if (dup_lock == FALSE) { 8977 rfs4_update_open_sequence(sp->rs_owner); 8978 } 8979 8980 NFS4_DEBUG(rfs4_debug, 8981 (CE_NOTE, "rfs4_op_lock: no state")); 8982 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8983 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8984 rfs4_lockowner_rele(lo); 8985 goto end; 8986 } 8987 8988 /* 8989 * This is the new_lock_owner branch and the client is 8990 * supposed to be associating a new lock_owner with 8991 * the open file at this point. If we find that a 8992 * lock_owner/state association already exists and a 8993 * successful LOCK request was returned to the client, 8994 * an error is returned to the client since this is 8995 * not appropriate. The client should be using the 8996 * existing lock_owner branch. 8997 */ 8998 if (dup_lock == FALSE && create == FALSE) { 8999 if (lsp->rls_lock_completed == TRUE) { 9000 *cs->statusp = 9001 resp->status = NFS4ERR_BAD_SEQID; 9002 rfs4_lockowner_rele(lo); 9003 goto end; 9004 } 9005 } 9006 9007 rfs4_update_lease(sp->rs_owner->ro_client); 9008 9009 /* 9010 * Only update theh open_seqid if this is not 9011 * a duplicate request 9012 */ 9013 if (dup_lock == FALSE) { 9014 rfs4_update_open_sequence(sp->rs_owner); 9015 } 9016 9017 /* 9018 * If this is a duplicate lock request, just copy the 9019 * previously saved reply and return. 9020 */ 9021 if (dup_lock == TRUE) { 9022 /* verify that lock_seqid's match */ 9023 if (lsp->rls_seqid != olo->lock_seqid) { 9024 NFS4_DEBUG(rfs4_debug, 9025 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 9026 "lsp->seqid=%d old->seqid=%d", 9027 lsp->rls_seqid, olo->lock_seqid)); 9028 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9029 } else { 9030 rfs4_copy_reply(resop, &lsp->rls_reply); 9031 /* 9032 * Make sure to copy the just 9033 * retrieved reply status into the 9034 * overall compound status 9035 */ 9036 *cs->statusp = resp->status; 9037 } 9038 rfs4_lockowner_rele(lo); 9039 goto end; 9040 } 9041 9042 rfs4_dbe_lock(lsp->rls_dbe); 9043 9044 /* Make sure to update the lock sequence id */ 9045 lsp->rls_seqid = olo->lock_seqid; 9046 9047 NFS4_DEBUG(rfs4_debug, 9048 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 9049 9050 /* 9051 * This is used to signify the newly created lockowner 9052 * stateid and its sequence number. The checks for 9053 * sequence number and increment don't occur on the 9054 * very first lock request for a lockowner. 9055 */ 9056 lsp->rls_skip_seqid_check = TRUE; 9057 9058 /* hold off other access to lsp while we tinker */ 9059 rfs4_sw_enter(&lsp->rls_sw); 9060 ls_sw_held = TRUE; 9061 9062 rfs4_dbe_unlock(lsp->rls_dbe); 9063 9064 rfs4_lockowner_rele(lo); 9065 } else { 9066 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 9067 /* get lsp and hold the lock on the underlying file struct */ 9068 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 9069 != NFS4_OK) { 9070 *cs->statusp = resp->status = status; 9071 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9072 cs, LOCK4res *, resp); 9073 return; 9074 } 9075 create = FALSE; /* We didn't create lsp */ 9076 9077 /* Ensure specified filehandle matches */ 9078 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9079 rfs4_lo_state_rele(lsp, TRUE); 9080 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9081 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9082 cs, LOCK4res *, resp); 9083 return; 9084 } 9085 9086 /* hold off other access to lsp while we tinker */ 9087 rfs4_sw_enter(&lsp->rls_sw); 9088 ls_sw_held = TRUE; 9089 9090 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9091 /* 9092 * The stateid looks like it was okay (expected to be 9093 * the next one) 9094 */ 9095 case NFS4_CHECK_STATEID_OKAY: 9096 /* 9097 * The sequence id is now checked. Determine 9098 * if this is a replay or if it is in the 9099 * expected (next) sequence. In the case of a 9100 * replay, there are two replay conditions 9101 * that may occur. The first is the normal 9102 * condition where a LOCK is done with a 9103 * NFS4_OK response and the stateid is 9104 * updated. That case is handled below when 9105 * the stateid is identified as a REPLAY. The 9106 * second is the case where an error is 9107 * returned, like NFS4ERR_DENIED, and the 9108 * sequence number is updated but the stateid 9109 * is not updated. This second case is dealt 9110 * with here. So it may seem odd that the 9111 * stateid is okay but the sequence id is a 9112 * replay but it is okay. 9113 */ 9114 switch (rfs4_check_lock_seqid( 9115 args->locker.locker4_u.lock_owner.lock_seqid, 9116 lsp, resop)) { 9117 case NFS4_CHKSEQ_REPLAY: 9118 if (resp->status != NFS4_OK) { 9119 /* 9120 * Here is our replay and need 9121 * to verify that the last 9122 * response was an error. 9123 */ 9124 *cs->statusp = resp->status; 9125 goto end; 9126 } 9127 /* 9128 * This is done since the sequence id 9129 * looked like a replay but it didn't 9130 * pass our check so a BAD_SEQID is 9131 * returned as a result. 9132 */ 9133 /*FALLTHROUGH*/ 9134 case NFS4_CHKSEQ_BAD: 9135 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9136 goto end; 9137 case NFS4_CHKSEQ_OKAY: 9138 /* Everything looks okay move ahead */ 9139 break; 9140 } 9141 break; 9142 case NFS4_CHECK_STATEID_OLD: 9143 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9144 goto end; 9145 case NFS4_CHECK_STATEID_BAD: 9146 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9147 goto end; 9148 case NFS4_CHECK_STATEID_EXPIRED: 9149 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9150 goto end; 9151 case NFS4_CHECK_STATEID_CLOSED: 9152 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9153 goto end; 9154 case NFS4_CHECK_STATEID_REPLAY: 9155 switch (rfs4_check_lock_seqid( 9156 args->locker.locker4_u.lock_owner.lock_seqid, 9157 lsp, resop)) { 9158 case NFS4_CHKSEQ_OKAY: 9159 /* 9160 * This is a replayed stateid; if 9161 * seqid matches the next expected, 9162 * then client is using wrong seqid. 9163 */ 9164 case NFS4_CHKSEQ_BAD: 9165 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9166 goto end; 9167 case NFS4_CHKSEQ_REPLAY: 9168 rfs4_update_lease(lsp->rls_locker->rl_client); 9169 *cs->statusp = status = resp->status; 9170 goto end; 9171 } 9172 break; 9173 default: 9174 ASSERT(FALSE); 9175 break; 9176 } 9177 9178 rfs4_update_lock_sequence(lsp); 9179 rfs4_update_lease(lsp->rls_locker->rl_client); 9180 } 9181 9182 /* 9183 * NFS4 only allows locking on regular files, so 9184 * verify type of object. 9185 */ 9186 if (cs->vp->v_type != VREG) { 9187 if (cs->vp->v_type == VDIR) 9188 status = NFS4ERR_ISDIR; 9189 else 9190 status = NFS4ERR_INVAL; 9191 goto out; 9192 } 9193 9194 cp = lsp->rls_state->rs_owner->ro_client; 9195 9196 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9197 status = NFS4ERR_GRACE; 9198 goto out; 9199 } 9200 9201 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9202 status = NFS4ERR_NO_GRACE; 9203 goto out; 9204 } 9205 9206 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9207 status = NFS4ERR_NO_GRACE; 9208 goto out; 9209 } 9210 9211 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9212 cs->deleg = TRUE; 9213 9214 status = rfs4_do_lock(lsp, args->locktype, 9215 args->offset, args->length, cs->cr, resop); 9216 9217 out: 9218 lsp->rls_skip_seqid_check = FALSE; 9219 9220 *cs->statusp = resp->status = status; 9221 9222 if (status == NFS4_OK) { 9223 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9224 lsp->rls_lock_completed = TRUE; 9225 } 9226 /* 9227 * Only update the "OPEN" response here if this was a new 9228 * lock_owner 9229 */ 9230 if (sp) 9231 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9232 9233 rfs4_update_lock_resp(lsp, resop); 9234 9235 end: 9236 if (lsp) { 9237 if (ls_sw_held) 9238 rfs4_sw_exit(&lsp->rls_sw); 9239 /* 9240 * If an sp obtained, then the lsp does not represent 9241 * a lock on the file struct. 9242 */ 9243 if (sp != NULL) 9244 rfs4_lo_state_rele(lsp, FALSE); 9245 else 9246 rfs4_lo_state_rele(lsp, TRUE); 9247 } 9248 if (sp) { 9249 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9250 rfs4_state_rele(sp); 9251 } 9252 9253 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9254 LOCK4res *, resp); 9255 } 9256 9257 /* free function for LOCK/LOCKT */ 9258 static void 9259 lock_denied_free(nfs_resop4 *resop) 9260 { 9261 LOCK4denied *dp = NULL; 9262 9263 switch (resop->resop) { 9264 case OP_LOCK: 9265 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9266 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9267 break; 9268 case OP_LOCKT: 9269 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9270 dp = &resop->nfs_resop4_u.oplockt.denied; 9271 break; 9272 default: 9273 break; 9274 } 9275 9276 if (dp) 9277 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9278 } 9279 9280 /*ARGSUSED*/ 9281 void 9282 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9283 struct svc_req *req, struct compound_state *cs) 9284 { 9285 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9286 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9287 nfsstat4 status; 9288 stateid4 *stateid = &args->lock_stateid; 9289 rfs4_lo_state_t *lsp; 9290 9291 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9292 LOCKU4args *, args); 9293 9294 if (cs->vp == NULL) { 9295 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9296 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9297 LOCKU4res *, resp); 9298 return; 9299 } 9300 9301 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9302 *cs->statusp = resp->status = status; 9303 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9304 LOCKU4res *, resp); 9305 return; 9306 } 9307 9308 /* Ensure specified filehandle matches */ 9309 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9310 rfs4_lo_state_rele(lsp, TRUE); 9311 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9312 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9313 LOCKU4res *, resp); 9314 return; 9315 } 9316 9317 /* hold off other access to lsp while we tinker */ 9318 rfs4_sw_enter(&lsp->rls_sw); 9319 9320 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9321 case NFS4_CHECK_STATEID_OKAY: 9322 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9323 != NFS4_CHKSEQ_OKAY) { 9324 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9325 goto end; 9326 } 9327 break; 9328 case NFS4_CHECK_STATEID_OLD: 9329 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9330 goto end; 9331 case NFS4_CHECK_STATEID_BAD: 9332 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9333 goto end; 9334 case NFS4_CHECK_STATEID_EXPIRED: 9335 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9336 goto end; 9337 case NFS4_CHECK_STATEID_CLOSED: 9338 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9339 goto end; 9340 case NFS4_CHECK_STATEID_REPLAY: 9341 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9342 case NFS4_CHKSEQ_OKAY: 9343 /* 9344 * This is a replayed stateid; if 9345 * seqid matches the next expected, 9346 * then client is using wrong seqid. 9347 */ 9348 case NFS4_CHKSEQ_BAD: 9349 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9350 goto end; 9351 case NFS4_CHKSEQ_REPLAY: 9352 rfs4_update_lease(lsp->rls_locker->rl_client); 9353 *cs->statusp = status = resp->status; 9354 goto end; 9355 } 9356 break; 9357 default: 9358 ASSERT(FALSE); 9359 break; 9360 } 9361 9362 rfs4_update_lock_sequence(lsp); 9363 rfs4_update_lease(lsp->rls_locker->rl_client); 9364 9365 /* 9366 * NFS4 only allows locking on regular files, so 9367 * verify type of object. 9368 */ 9369 if (cs->vp->v_type != VREG) { 9370 if (cs->vp->v_type == VDIR) 9371 status = NFS4ERR_ISDIR; 9372 else 9373 status = NFS4ERR_INVAL; 9374 goto out; 9375 } 9376 9377 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9378 status = NFS4ERR_GRACE; 9379 goto out; 9380 } 9381 9382 status = rfs4_do_lock(lsp, args->locktype, 9383 args->offset, args->length, cs->cr, resop); 9384 9385 out: 9386 *cs->statusp = resp->status = status; 9387 9388 if (status == NFS4_OK) 9389 resp->lock_stateid = lsp->rls_lockid.stateid; 9390 9391 rfs4_update_lock_resp(lsp, resop); 9392 9393 end: 9394 rfs4_sw_exit(&lsp->rls_sw); 9395 rfs4_lo_state_rele(lsp, TRUE); 9396 9397 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9398 LOCKU4res *, resp); 9399 } 9400 9401 /* 9402 * LOCKT is a best effort routine, the client can not be guaranteed that 9403 * the status return is still in effect by the time the reply is received. 9404 * They are numerous race conditions in this routine, but we are not required 9405 * and can not be accurate. 9406 */ 9407 /*ARGSUSED*/ 9408 void 9409 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9410 struct svc_req *req, struct compound_state *cs) 9411 { 9412 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9413 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9414 rfs4_lockowner_t *lo; 9415 rfs4_client_t *cp; 9416 bool_t create = FALSE; 9417 struct flock64 flk; 9418 int error; 9419 int flag = FREAD | FWRITE; 9420 int ltype; 9421 length4 posix_length; 9422 sysid_t sysid; 9423 pid_t pid; 9424 9425 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9426 LOCKT4args *, args); 9427 9428 if (cs->vp == NULL) { 9429 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9430 goto out; 9431 } 9432 9433 /* 9434 * NFS4 only allows locking on regular files, so 9435 * verify type of object. 9436 */ 9437 if (cs->vp->v_type != VREG) { 9438 if (cs->vp->v_type == VDIR) 9439 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9440 else 9441 *cs->statusp = resp->status = NFS4ERR_INVAL; 9442 goto out; 9443 } 9444 9445 /* 9446 * Check out the clientid to ensure the server knows about it 9447 * so that we correctly inform the client of a server reboot. 9448 */ 9449 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9450 == NULL) { 9451 *cs->statusp = resp->status = 9452 rfs4_check_clientid(&args->owner.clientid, 0); 9453 goto out; 9454 } 9455 if (rfs4_lease_expired(cp)) { 9456 rfs4_client_close(cp); 9457 /* 9458 * Protocol doesn't allow returning NFS4ERR_STALE as 9459 * other operations do on this check so STALE_CLIENTID 9460 * is returned instead 9461 */ 9462 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9463 goto out; 9464 } 9465 9466 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9467 *cs->statusp = resp->status = NFS4ERR_GRACE; 9468 rfs4_client_rele(cp); 9469 goto out; 9470 } 9471 rfs4_client_rele(cp); 9472 9473 resp->status = NFS4_OK; 9474 9475 switch (args->locktype) { 9476 case READ_LT: 9477 case READW_LT: 9478 ltype = F_RDLCK; 9479 break; 9480 case WRITE_LT: 9481 case WRITEW_LT: 9482 ltype = F_WRLCK; 9483 break; 9484 } 9485 9486 posix_length = args->length; 9487 /* Check for zero length. To lock to end of file use all ones for V4 */ 9488 if (posix_length == 0) { 9489 *cs->statusp = resp->status = NFS4ERR_INVAL; 9490 goto out; 9491 } else if (posix_length == (length4)(~0)) { 9492 posix_length = 0; /* Posix to end of file */ 9493 } 9494 9495 /* Find or create a lockowner */ 9496 lo = rfs4_findlockowner(&args->owner, &create); 9497 9498 if (lo) { 9499 pid = lo->rl_pid; 9500 if ((resp->status = 9501 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9502 goto err; 9503 } else { 9504 pid = 0; 9505 sysid = lockt_sysid; 9506 } 9507 retry: 9508 flk.l_type = ltype; 9509 flk.l_whence = 0; /* SEEK_SET */ 9510 flk.l_start = args->offset; 9511 flk.l_len = posix_length; 9512 flk.l_sysid = sysid; 9513 flk.l_pid = pid; 9514 flag |= F_REMOTELOCK; 9515 9516 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9517 9518 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9519 if (flk.l_len < 0 || flk.l_start < 0) { 9520 resp->status = NFS4ERR_INVAL; 9521 goto err; 9522 } 9523 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9524 NULL, cs->cr, NULL); 9525 9526 /* 9527 * N.B. We map error values to nfsv4 errors. This is differrent 9528 * than puterrno4 routine. 9529 */ 9530 switch (error) { 9531 case 0: 9532 if (flk.l_type == F_UNLCK) 9533 resp->status = NFS4_OK; 9534 else { 9535 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9536 goto retry; 9537 resp->status = NFS4ERR_DENIED; 9538 } 9539 break; 9540 case EOVERFLOW: 9541 resp->status = NFS4ERR_INVAL; 9542 break; 9543 case EINVAL: 9544 resp->status = NFS4ERR_NOTSUPP; 9545 break; 9546 default: 9547 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9548 error); 9549 resp->status = NFS4ERR_SERVERFAULT; 9550 break; 9551 } 9552 9553 err: 9554 if (lo) 9555 rfs4_lockowner_rele(lo); 9556 *cs->statusp = resp->status; 9557 out: 9558 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9559 LOCKT4res *, resp); 9560 } 9561 9562 int 9563 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9564 { 9565 int err; 9566 int cmd; 9567 vnode_t *vp; 9568 struct shrlock shr; 9569 struct shr_locowner shr_loco; 9570 int fflags = 0; 9571 9572 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9573 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9574 9575 if (sp->rs_closed) 9576 return (NFS4ERR_OLD_STATEID); 9577 9578 vp = sp->rs_finfo->rf_vp; 9579 ASSERT(vp); 9580 9581 shr.s_access = shr.s_deny = 0; 9582 9583 if (access & OPEN4_SHARE_ACCESS_READ) { 9584 fflags |= FREAD; 9585 shr.s_access |= F_RDACC; 9586 } 9587 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9588 fflags |= FWRITE; 9589 shr.s_access |= F_WRACC; 9590 } 9591 ASSERT(shr.s_access); 9592 9593 if (deny & OPEN4_SHARE_DENY_READ) 9594 shr.s_deny |= F_RDDNY; 9595 if (deny & OPEN4_SHARE_DENY_WRITE) 9596 shr.s_deny |= F_WRDNY; 9597 9598 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9599 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9600 shr_loco.sl_pid = shr.s_pid; 9601 shr_loco.sl_id = shr.s_sysid; 9602 shr.s_owner = (caddr_t)&shr_loco; 9603 shr.s_own_len = sizeof (shr_loco); 9604 9605 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9606 9607 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9608 if (err != 0) { 9609 if (err == EAGAIN) 9610 err = NFS4ERR_SHARE_DENIED; 9611 else 9612 err = puterrno4(err); 9613 return (err); 9614 } 9615 9616 sp->rs_share_access |= access; 9617 sp->rs_share_deny |= deny; 9618 9619 return (0); 9620 } 9621 9622 int 9623 rfs4_unshare(rfs4_state_t *sp) 9624 { 9625 int err; 9626 struct shrlock shr; 9627 struct shr_locowner shr_loco; 9628 9629 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9630 9631 if (sp->rs_closed || sp->rs_share_access == 0) 9632 return (0); 9633 9634 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9635 ASSERT(sp->rs_finfo->rf_vp); 9636 9637 shr.s_access = shr.s_deny = 0; 9638 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9639 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9640 shr_loco.sl_pid = shr.s_pid; 9641 shr_loco.sl_id = shr.s_sysid; 9642 shr.s_owner = (caddr_t)&shr_loco; 9643 shr.s_own_len = sizeof (shr_loco); 9644 9645 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9646 NULL); 9647 if (err != 0) { 9648 err = puterrno4(err); 9649 return (err); 9650 } 9651 9652 sp->rs_share_access = 0; 9653 sp->rs_share_deny = 0; 9654 9655 return (0); 9656 9657 } 9658 9659 static int 9660 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9661 { 9662 struct clist *wcl; 9663 count4 count = rok->data_len; 9664 int wlist_len; 9665 9666 wcl = args->wlist; 9667 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9668 return (FALSE); 9669 } 9670 wcl = args->wlist; 9671 rok->wlist_len = wlist_len; 9672 rok->wlist = wcl; 9673 return (TRUE); 9674 } 9675 9676 /* tunable to disable server referrals */ 9677 int rfs4_no_referrals = 0; 9678 9679 /* 9680 * Find an NFS record in reparse point data. 9681 * Returns 0 for success and <0 or an errno value on failure. 9682 */ 9683 int 9684 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9685 { 9686 int err; 9687 char *stype, *val; 9688 nvlist_t *nvl; 9689 nvpair_t *curr; 9690 9691 if ((nvl = reparse_init()) == NULL) 9692 return (-1); 9693 9694 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9695 reparse_free(nvl); 9696 return (err); 9697 } 9698 9699 curr = NULL; 9700 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9701 if ((stype = nvpair_name(curr)) == NULL) { 9702 reparse_free(nvl); 9703 return (-2); 9704 } 9705 if (strncasecmp(stype, "NFS", 3) == 0) 9706 break; 9707 } 9708 9709 if ((curr == NULL) || 9710 (nvpair_value_string(curr, &val))) { 9711 reparse_free(nvl); 9712 return (-3); 9713 } 9714 *nvlp = nvl; 9715 *svcp = stype; 9716 *datap = val; 9717 return (0); 9718 } 9719 9720 int 9721 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9722 { 9723 nvlist_t *nvl; 9724 char *s, *d; 9725 9726 if (rfs4_no_referrals != 0) 9727 return (B_FALSE); 9728 9729 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9730 return (B_FALSE); 9731 9732 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9733 return (B_FALSE); 9734 9735 reparse_free(nvl); 9736 9737 return (B_TRUE); 9738 } 9739 9740 /* 9741 * There is a user-level copy of this routine in ref_subr.c. 9742 * Changes should be kept in sync. 9743 */ 9744 static int 9745 nfs4_create_components(char *path, component4 *comp4) 9746 { 9747 int slen, plen, ncomp; 9748 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9749 9750 if (path == NULL) 9751 return (0); 9752 9753 plen = strlen(path) + 1; /* include the terminator */ 9754 ori_path = path; 9755 ncomp = 0; 9756 9757 /* count number of components in the path */ 9758 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9759 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9760 if ((slen = nxtc - path) == 0) { 9761 path = nxtc + 1; 9762 continue; 9763 } 9764 9765 if (comp4 != NULL) { 9766 bcopy(path, buf, slen); 9767 buf[slen] = '\0'; 9768 (void) str_to_utf8(buf, &comp4[ncomp]); 9769 } 9770 9771 ncomp++; /* 1 valid component */ 9772 path = nxtc + 1; 9773 } 9774 if (*nxtc == '\0' || *nxtc == '\n') 9775 break; 9776 } 9777 9778 return (ncomp); 9779 } 9780 9781 /* 9782 * There is a user-level copy of this routine in ref_subr.c. 9783 * Changes should be kept in sync. 9784 */ 9785 static int 9786 make_pathname4(char *path, pathname4 *pathname) 9787 { 9788 int ncomp; 9789 component4 *comp4; 9790 9791 if (pathname == NULL) 9792 return (0); 9793 9794 if (path == NULL) { 9795 pathname->pathname4_val = NULL; 9796 pathname->pathname4_len = 0; 9797 return (0); 9798 } 9799 9800 /* count number of components to alloc buffer */ 9801 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9802 pathname->pathname4_val = NULL; 9803 pathname->pathname4_len = 0; 9804 return (0); 9805 } 9806 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9807 9808 /* copy components into allocated buffer */ 9809 ncomp = nfs4_create_components(path, comp4); 9810 9811 pathname->pathname4_val = comp4; 9812 pathname->pathname4_len = ncomp; 9813 9814 return (ncomp); 9815 } 9816 9817 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9818 9819 fs_locations4 * 9820 fetch_referral(vnode_t *vp, cred_t *cr) 9821 { 9822 nvlist_t *nvl; 9823 char *stype, *sdata; 9824 fs_locations4 *result; 9825 char buf[1024]; 9826 size_t bufsize; 9827 XDR xdr; 9828 int err; 9829 9830 /* 9831 * Check attrs to ensure it's a reparse point 9832 */ 9833 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9834 return (NULL); 9835 9836 /* 9837 * Look for an NFS record and get the type and data 9838 */ 9839 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9840 return (NULL); 9841 9842 /* 9843 * With the type and data, upcall to get the referral 9844 */ 9845 bufsize = sizeof (buf); 9846 bzero(buf, sizeof (buf)); 9847 err = reparse_kderef((const char *)stype, (const char *)sdata, 9848 buf, &bufsize); 9849 reparse_free(nvl); 9850 9851 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9852 char *, stype, char *, sdata, char *, buf, int, err); 9853 if (err) { 9854 cmn_err(CE_NOTE, 9855 "reparsed daemon not running: unable to get referral (%d)", 9856 err); 9857 return (NULL); 9858 } 9859 9860 /* 9861 * We get an XDR'ed record back from the kderef call 9862 */ 9863 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9864 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9865 err = xdr_fs_locations4(&xdr, result); 9866 XDR_DESTROY(&xdr); 9867 if (err != TRUE) { 9868 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9869 int, err); 9870 return (NULL); 9871 } 9872 9873 /* 9874 * Look at path to recover fs_root, ignoring the leading '/' 9875 */ 9876 (void) make_pathname4(vp->v_path, &result->fs_root); 9877 9878 return (result); 9879 } 9880 9881 char * 9882 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9883 { 9884 fs_locations4 *fsl; 9885 fs_location4 *fs; 9886 char *server, *path, *symbuf; 9887 static char *prefix = "/net/"; 9888 int i, size, npaths; 9889 uint_t len; 9890 9891 /* Get the referral */ 9892 if ((fsl = fetch_referral(vp, cr)) == NULL) 9893 return (NULL); 9894 9895 /* Deal with only the first location and first server */ 9896 fs = &fsl->locations_val[0]; 9897 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9898 if (server == NULL) { 9899 rfs4_free_fs_locations4(fsl); 9900 kmem_free(fsl, sizeof (fs_locations4)); 9901 return (NULL); 9902 } 9903 9904 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 9905 size = strlen(prefix) + len; 9906 for (i = 0; i < fs->rootpath.pathname4_len; i++) 9907 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 9908 9909 /* Allocate the symlink buffer and fill it */ 9910 symbuf = kmem_zalloc(size, KM_SLEEP); 9911 (void) strcat(symbuf, prefix); 9912 (void) strcat(symbuf, server); 9913 kmem_free(server, len); 9914 9915 npaths = 0; 9916 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 9917 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 9918 if (path == NULL) 9919 continue; 9920 (void) strcat(symbuf, "/"); 9921 (void) strcat(symbuf, path); 9922 npaths++; 9923 kmem_free(path, len); 9924 } 9925 9926 rfs4_free_fs_locations4(fsl); 9927 kmem_free(fsl, sizeof (fs_locations4)); 9928 9929 if (strsz != NULL) 9930 *strsz = size; 9931 return (symbuf); 9932 } 9933 9934 /* 9935 * Check to see if we have a downrev Solaris client, so that we 9936 * can send it a symlink instead of a referral. 9937 */ 9938 int 9939 client_is_downrev(struct svc_req *req) 9940 { 9941 struct sockaddr *ca; 9942 rfs4_clntip_t *ci; 9943 bool_t create = FALSE; 9944 int is_downrev; 9945 9946 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 9947 ASSERT(ca); 9948 ci = rfs4_find_clntip(ca, &create); 9949 if (ci == NULL) 9950 return (0); 9951 is_downrev = ci->ri_no_referrals; 9952 rfs4_dbe_rele(ci->ri_dbe); 9953 return (is_downrev); 9954 } 9955 9956 /* 9957 * Do the main work of handling HA-NFSv4 Resource Group failover on 9958 * Sun Cluster. 9959 * We need to detect whether any RG admin paths have been added or removed, 9960 * and adjust resources accordingly. 9961 * Currently we're using a very inefficient algorithm, ~ 2 * O(n**2). In 9962 * order to scale, the list and array of paths need to be held in more 9963 * suitable data structures. 9964 */ 9965 static void 9966 hanfsv4_failover(nfs4_srv_t *nsrv4) 9967 { 9968 int i, start_grace, numadded_paths = 0; 9969 char **added_paths = NULL; 9970 rfs4_dss_path_t *dss_path; 9971 9972 /* 9973 * Note: currently, dss_pathlist cannot be NULL, since 9974 * it will always include an entry for NFS4_DSS_VAR_DIR. If we 9975 * make the latter dynamically specified too, the following will 9976 * need to be adjusted. 9977 */ 9978 9979 /* 9980 * First, look for removed paths: RGs that have been failed-over 9981 * away from this node. 9982 * Walk the "currently-serving" dss_pathlist and, for each 9983 * path, check if it is on the "passed-in" rfs4_dss_newpaths array 9984 * from nfsd. If not, that RG path has been removed. 9985 * 9986 * Note that nfsd has sorted rfs4_dss_newpaths for us, and removed 9987 * any duplicates. 9988 */ 9989 dss_path = nsrv4->dss_pathlist; 9990 do { 9991 int found = 0; 9992 char *path = dss_path->path; 9993 9994 /* used only for non-HA so may not be removed */ 9995 if (strcmp(path, NFS4_DSS_VAR_DIR) == 0) { 9996 dss_path = dss_path->next; 9997 continue; 9998 } 9999 10000 for (i = 0; i < rfs4_dss_numnewpaths; i++) { 10001 int cmpret; 10002 char *newpath = rfs4_dss_newpaths[i]; 10003 10004 /* 10005 * Since nfsd has sorted rfs4_dss_newpaths for us, 10006 * once the return from strcmp is negative we know 10007 * we've passed the point where "path" should be, 10008 * and can stop searching: "path" has been removed. 10009 */ 10010 cmpret = strcmp(path, newpath); 10011 if (cmpret < 0) 10012 break; 10013 if (cmpret == 0) { 10014 found = 1; 10015 break; 10016 } 10017 } 10018 10019 if (found == 0) { 10020 unsigned index = dss_path->index; 10021 rfs4_servinst_t *sip = dss_path->sip; 10022 rfs4_dss_path_t *path_next = dss_path->next; 10023 10024 /* 10025 * This path has been removed. 10026 * We must clear out the servinst reference to 10027 * it, since it's now owned by another 10028 * node: we should not attempt to touch it. 10029 */ 10030 ASSERT(dss_path == sip->dss_paths[index]); 10031 sip->dss_paths[index] = NULL; 10032 10033 /* remove from "currently-serving" list, and destroy */ 10034 remque(dss_path); 10035 /* allow for NUL */ 10036 kmem_free(dss_path->path, strlen(dss_path->path) + 1); 10037 kmem_free(dss_path, sizeof (rfs4_dss_path_t)); 10038 10039 dss_path = path_next; 10040 } else { 10041 /* path was found; not removed */ 10042 dss_path = dss_path->next; 10043 } 10044 } while (dss_path != nsrv4->dss_pathlist); 10045 10046 /* 10047 * Now, look for added paths: RGs that have been failed-over 10048 * to this node. 10049 * Walk the "passed-in" rfs4_dss_newpaths array from nfsd and, 10050 * for each path, check if it is on the "currently-serving" 10051 * dss_pathlist. If not, that RG path has been added. 10052 * 10053 * Note: we don't do duplicate detection here; nfsd does that for us. 10054 * 10055 * Note: numadded_paths <= rfs4_dss_numnewpaths, which gives us 10056 * an upper bound for the size needed for added_paths[numadded_paths]. 10057 */ 10058 10059 /* probably more space than we need, but guaranteed to be enough */ 10060 if (rfs4_dss_numnewpaths > 0) { 10061 size_t sz = rfs4_dss_numnewpaths * sizeof (char *); 10062 added_paths = kmem_zalloc(sz, KM_SLEEP); 10063 } 10064 10065 /* walk the "passed-in" rfs4_dss_newpaths array from nfsd */ 10066 for (i = 0; i < rfs4_dss_numnewpaths; i++) { 10067 int found = 0; 10068 char *newpath = rfs4_dss_newpaths[i]; 10069 10070 dss_path = nsrv4->dss_pathlist; 10071 do { 10072 char *path = dss_path->path; 10073 10074 /* used only for non-HA */ 10075 if (strcmp(path, NFS4_DSS_VAR_DIR) == 0) { 10076 dss_path = dss_path->next; 10077 continue; 10078 } 10079 10080 if (strncmp(path, newpath, strlen(path)) == 0) { 10081 found = 1; 10082 break; 10083 } 10084 10085 dss_path = dss_path->next; 10086 } while (dss_path != nsrv4->dss_pathlist); 10087 10088 if (found == 0) { 10089 added_paths[numadded_paths] = newpath; 10090 numadded_paths++; 10091 } 10092 } 10093 10094 /* did we find any added paths? */ 10095 if (numadded_paths > 0) { 10096 10097 /* create a new server instance, and start its grace period */ 10098 start_grace = 1; 10099 /* CSTYLED */ 10100 rfs4_servinst_create(nsrv4, start_grace, numadded_paths, added_paths); 10101 10102 /* read in the stable storage state from these paths */ 10103 rfs4_dss_readstate(nsrv4, numadded_paths, added_paths); 10104 10105 /* 10106 * Multiple failovers during a grace period will cause 10107 * clients of the same resource group to be partitioned 10108 * into different server instances, with different 10109 * grace periods. Since clients of the same resource 10110 * group must be subject to the same grace period, 10111 * we need to reset all currently active grace periods. 10112 */ 10113 rfs4_grace_reset_all(nsrv4); 10114 } 10115 10116 if (rfs4_dss_numnewpaths > 0) 10117 kmem_free(added_paths, rfs4_dss_numnewpaths * sizeof (char *)); 10118 } 10119