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 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 28 * All Rights Reserved 29 */ 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #include <sys/param.h> 34 #include <sys/types.h> 35 #include <sys/systm.h> 36 #include <sys/cred.h> 37 #include <sys/buf.h> 38 #include <sys/vfs.h> 39 #include <sys/vfs_opreg.h> 40 #include <sys/vnode.h> 41 #include <sys/uio.h> 42 #include <sys/errno.h> 43 #include <sys/sysmacros.h> 44 #include <sys/statvfs.h> 45 #include <sys/kmem.h> 46 #include <sys/dirent.h> 47 #include <sys/cmn_err.h> 48 #include <sys/debug.h> 49 #include <sys/systeminfo.h> 50 #include <sys/flock.h> 51 #include <sys/pathname.h> 52 #include <sys/nbmlock.h> 53 #include <sys/share.h> 54 #include <sys/atomic.h> 55 #include <sys/policy.h> 56 #include <sys/fem.h> 57 #include <sys/sdt.h> 58 #include <sys/ddi.h> 59 60 #include <rpc/types.h> 61 #include <rpc/auth.h> 62 #include <rpc/rpcsec_gss.h> 63 #include <rpc/svc.h> 64 65 #include <nfs/nfs.h> 66 #include <nfs/export.h> 67 #include <nfs/lm.h> 68 #include <nfs/nfs4.h> 69 70 #include <sys/strsubr.h> 71 #include <sys/strsun.h> 72 73 #include <inet/common.h> 74 #include <inet/ip.h> 75 #include <inet/ip6.h> 76 77 #include <sys/tsol/label.h> 78 #include <sys/tsol/tndb.h> 79 80 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 81 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 82 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 83 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 84 85 /* End of Tunables */ 86 87 /* 88 * Used to bump the stateid4.seqid value and show changes in the stateid 89 */ 90 #define next_stateid(sp) (++(sp)->bits.chgseq) 91 92 /* 93 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 94 * This is used to return NFS4ERR_TOOSMALL when clients specify 95 * maxcount that isn't large enough to hold the smallest possible 96 * XDR encoded dirent. 97 * 98 * sizeof cookie (8 bytes) + 99 * sizeof name_len (4 bytes) + 100 * sizeof smallest (padded) name (4 bytes) + 101 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 102 * sizeof attrlist4_len (4 bytes) + 103 * sizeof next boolean (4 bytes) 104 * 105 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 106 * the smallest possible entry4 (assumes no attrs requested). 107 * sizeof nfsstat4 (4 bytes) + 108 * sizeof verifier4 (8 bytes) + 109 * sizeof entry4list bool (4 bytes) + 110 * sizeof entry4 (36 bytes) + 111 * sizeof eof bool (4 bytes) 112 * 113 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 114 * VOP_READDIR. Its value is the size of the maximum possible dirent 115 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 116 * required for a given name length. MAXNAMELEN is the maximum 117 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 118 * macros are to allow for . and .. entries -- just a minor tweak to try 119 * and guarantee that buffer we give to VOP_READDIR will be large enough 120 * to hold ., .., and the largest possible solaris dirent64. 121 */ 122 #define RFS4_MINLEN_ENTRY4 36 123 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 124 #define RFS4_MINLEN_RDDIR_BUF \ 125 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 126 127 /* 128 * It would be better to pad to 4 bytes since that's what XDR would do, 129 * but the dirents UFS gives us are already padded to 8, so just take 130 * what we're given. Dircount is only a hint anyway. Currently the 131 * solaris kernel is ASCII only, so there's no point in calling the 132 * UTF8 functions. 133 * 134 * dirent64: named padded to provide 8 byte struct alignment 135 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 136 * 137 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 138 * 139 */ 140 #define DIRENT64_TO_DIRCOUNT(dp) \ 141 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 142 143 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 144 145 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 146 147 u_longlong_t nfs4_srv_caller_id; 148 uint_t nfs4_srv_vkey = 0; 149 150 verifier4 Write4verf; 151 verifier4 Readdir4verf; 152 153 void rfs4_init_compound_state(struct compound_state *); 154 155 static void nullfree(caddr_t); 156 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 157 struct compound_state *); 158 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 159 struct compound_state *); 160 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 161 struct compound_state *); 162 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 163 struct compound_state *); 164 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 165 struct compound_state *); 166 static void rfs4_op_create_free(nfs_resop4 *resop); 167 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 168 struct svc_req *, struct compound_state *); 169 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 170 struct svc_req *, struct compound_state *); 171 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 172 struct compound_state *); 173 static void rfs4_op_getattr_free(nfs_resop4 *); 174 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 175 struct compound_state *); 176 static void rfs4_op_getfh_free(nfs_resop4 *); 177 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 178 struct compound_state *); 179 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 180 struct compound_state *); 181 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 182 struct compound_state *); 183 static void lock_denied_free(nfs_resop4 *); 184 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 185 struct compound_state *); 186 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 187 struct compound_state *); 188 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 189 struct compound_state *); 190 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 191 struct compound_state *); 192 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 193 struct svc_req *req, struct compound_state *cs); 194 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 195 struct compound_state *); 196 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 197 struct compound_state *); 198 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 199 struct svc_req *, struct compound_state *); 200 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 201 struct svc_req *, struct compound_state *); 202 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 203 struct compound_state *); 204 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 205 struct compound_state *); 206 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 207 struct compound_state *); 208 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 209 struct compound_state *); 210 static void rfs4_op_read_free(nfs_resop4 *); 211 static void rfs4_op_readdir_free(nfs_resop4 *resop); 212 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 213 struct compound_state *); 214 static void rfs4_op_readlink_free(nfs_resop4 *); 215 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 216 struct svc_req *, struct compound_state *); 217 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 218 struct compound_state *); 219 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 220 struct compound_state *); 221 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 222 struct compound_state *); 223 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 224 struct compound_state *); 225 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 226 struct compound_state *); 227 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 228 struct compound_state *); 229 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 230 struct compound_state *); 231 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 232 struct compound_state *); 233 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 234 struct svc_req *, struct compound_state *); 235 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 236 struct svc_req *req, struct compound_state *); 237 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 238 struct compound_state *); 239 static void rfs4_op_secinfo_free(nfs_resop4 *); 240 241 static nfsstat4 check_open_access(uint32_t, 242 struct compound_state *, struct svc_req *); 243 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 244 static int vop_shrlock(vnode_t *, int, struct shrlock *, int); 245 static int rfs4_shrlock(rfs4_state_t *, int); 246 static int rfs4_share(rfs4_state_t *); 247 void rfs4_ss_clid(rfs4_client_t *, struct svc_req *); 248 249 /* 250 * translation table for attrs 251 */ 252 struct nfs4_ntov_table { 253 union nfs4_attr_u *na; 254 uint8_t amap[NFS4_MAXNUM_ATTRS]; 255 int attrcnt; 256 bool_t vfsstat; 257 }; 258 259 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 260 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 261 struct nfs4_svgetit_arg *sargp); 262 263 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 264 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 265 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 266 267 fem_t *deleg_rdops; 268 fem_t *deleg_wrops; 269 270 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 271 kmutex_t rfs4_servinst_lock; /* protects linked list */ 272 int rfs4_seen_first_compound; /* set first time we see one */ 273 274 /* 275 * NFS4 op dispatch table 276 */ 277 278 struct rfsv4disp { 279 void (*dis_proc)(); /* proc to call */ 280 void (*dis_resfree)(); /* frees space allocated by proc */ 281 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 282 }; 283 284 static struct rfsv4disp rfsv4disptab[] = { 285 /* 286 * NFS VERSION 4 287 */ 288 289 /* RFS_NULL = 0 */ 290 {rfs4_op_illegal, nullfree, 0}, 291 292 /* UNUSED = 1 */ 293 {rfs4_op_illegal, nullfree, 0}, 294 295 /* UNUSED = 2 */ 296 {rfs4_op_illegal, nullfree, 0}, 297 298 /* OP_ACCESS = 3 */ 299 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 300 301 /* OP_CLOSE = 4 */ 302 {rfs4_op_close, nullfree, 0}, 303 304 /* OP_COMMIT = 5 */ 305 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 306 307 /* OP_CREATE = 6 */ 308 {rfs4_op_create, nullfree, 0}, 309 310 /* OP_DELEGPURGE = 7 */ 311 {rfs4_op_delegpurge, nullfree, 0}, 312 313 /* OP_DELEGRETURN = 8 */ 314 {rfs4_op_delegreturn, nullfree, 0}, 315 316 /* OP_GETATTR = 9 */ 317 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 318 319 /* OP_GETFH = 10 */ 320 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 321 322 /* OP_LINK = 11 */ 323 {rfs4_op_link, nullfree, 0}, 324 325 /* OP_LOCK = 12 */ 326 {rfs4_op_lock, lock_denied_free, 0}, 327 328 /* OP_LOCKT = 13 */ 329 {rfs4_op_lockt, lock_denied_free, 0}, 330 331 /* OP_LOCKU = 14 */ 332 {rfs4_op_locku, nullfree, 0}, 333 334 /* OP_LOOKUP = 15 */ 335 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT|RPC_PUBLICFH_OK)}, 336 337 /* OP_LOOKUPP = 16 */ 338 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT|RPC_PUBLICFH_OK)}, 339 340 /* OP_NVERIFY = 17 */ 341 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 342 343 /* OP_OPEN = 18 */ 344 {rfs4_op_open, rfs4_free_reply, 0}, 345 346 /* OP_OPENATTR = 19 */ 347 {rfs4_op_openattr, nullfree, 0}, 348 349 /* OP_OPEN_CONFIRM = 20 */ 350 {rfs4_op_open_confirm, nullfree, 0}, 351 352 /* OP_OPEN_DOWNGRADE = 21 */ 353 {rfs4_op_open_downgrade, nullfree, 0}, 354 355 /* OP_OPEN_PUTFH = 22 */ 356 {rfs4_op_putfh, nullfree, RPC_ALL}, 357 358 /* OP_PUTPUBFH = 23 */ 359 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 360 361 /* OP_PUTROOTFH = 24 */ 362 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 363 364 /* OP_READ = 25 */ 365 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 366 367 /* OP_READDIR = 26 */ 368 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 369 370 /* OP_READLINK = 27 */ 371 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 372 373 /* OP_REMOVE = 28 */ 374 {rfs4_op_remove, nullfree, 0}, 375 376 /* OP_RENAME = 29 */ 377 {rfs4_op_rename, nullfree, 0}, 378 379 /* OP_RENEW = 30 */ 380 {rfs4_op_renew, nullfree, 0}, 381 382 /* OP_RESTOREFH = 31 */ 383 {rfs4_op_restorefh, nullfree, RPC_ALL}, 384 385 /* OP_SAVEFH = 32 */ 386 {rfs4_op_savefh, nullfree, RPC_ALL}, 387 388 /* OP_SECINFO = 33 */ 389 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 390 391 /* OP_SETATTR = 34 */ 392 {rfs4_op_setattr, nullfree, 0}, 393 394 /* OP_SETCLIENTID = 35 */ 395 {rfs4_op_setclientid, nullfree, 0}, 396 397 /* OP_SETCLIENTID_CONFIRM = 36 */ 398 {rfs4_op_setclientid_confirm, nullfree, 0}, 399 400 /* OP_VERIFY = 37 */ 401 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 402 403 /* OP_WRITE = 38 */ 404 {rfs4_op_write, nullfree, 0}, 405 406 /* OP_RELEASE_LOCKOWNER = 39 */ 407 {rfs4_op_release_lockowner, nullfree, 0}, 408 }; 409 410 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 411 412 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 413 414 #ifdef DEBUG 415 416 int rfs4_fillone_debug = 0; 417 int rfs4_shrlock_debug = 0; 418 int rfs4_no_stub_access = 1; 419 int rfs4_rddir_debug = 0; 420 421 static char *rfs4_op_string[] = { 422 "rfs4_op_null", 423 "rfs4_op_1 unused", 424 "rfs4_op_2 unused", 425 "rfs4_op_access", 426 "rfs4_op_close", 427 "rfs4_op_commit", 428 "rfs4_op_create", 429 "rfs4_op_delegpurge", 430 "rfs4_op_delegreturn", 431 "rfs4_op_getattr", 432 "rfs4_op_getfh", 433 "rfs4_op_link", 434 "rfs4_op_lock", 435 "rfs4_op_lockt", 436 "rfs4_op_locku", 437 "rfs4_op_lookup", 438 "rfs4_op_lookupp", 439 "rfs4_op_nverify", 440 "rfs4_op_open", 441 "rfs4_op_openattr", 442 "rfs4_op_open_confirm", 443 "rfs4_op_open_downgrade", 444 "rfs4_op_putfh", 445 "rfs4_op_putpubfh", 446 "rfs4_op_putrootfh", 447 "rfs4_op_read", 448 "rfs4_op_readdir", 449 "rfs4_op_readlink", 450 "rfs4_op_remove", 451 "rfs4_op_rename", 452 "rfs4_op_renew", 453 "rfs4_op_restorefh", 454 "rfs4_op_savefh", 455 "rfs4_op_secinfo", 456 "rfs4_op_setattr", 457 "rfs4_op_setclientid", 458 "rfs4_op_setclient_confirm", 459 "rfs4_op_verify", 460 "rfs4_op_write", 461 "rfs4_op_release_lockowner", 462 "rfs4_op_illegal" 463 }; 464 #endif 465 466 void rfs4_ss_chkclid(rfs4_client_t *); 467 468 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 469 470 #ifdef nextdp 471 #undef nextdp 472 #endif 473 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 474 475 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 476 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 477 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 478 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 479 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 480 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 481 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 482 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 483 NULL, NULL 484 }; 485 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 486 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 487 VOPNAME_READ, { .femop_read = deleg_wr_read }, 488 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 489 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 490 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 491 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 492 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 493 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 494 NULL, NULL 495 }; 496 497 int 498 rfs4_srvrinit(void) 499 { 500 timespec32_t verf; 501 int error; 502 extern void rfs4_attr_init(); 503 extern krwlock_t rfs4_deleg_policy_lock; 504 505 /* 506 * The following algorithm attempts to find a unique verifier 507 * to be used as the write verifier returned from the server 508 * to the client. It is important that this verifier change 509 * whenever the server reboots. Of secondary importance, it 510 * is important for the verifier to be unique between two 511 * different servers. 512 * 513 * Thus, an attempt is made to use the system hostid and the 514 * current time in seconds when the nfssrv kernel module is 515 * loaded. It is assumed that an NFS server will not be able 516 * to boot and then to reboot in less than a second. If the 517 * hostid has not been set, then the current high resolution 518 * time is used. This will ensure different verifiers each 519 * time the server reboots and minimize the chances that two 520 * different servers will have the same verifier. 521 * XXX - this is broken on LP64 kernels. 522 */ 523 verf.tv_sec = (time_t)nfs_atoi(hw_serial); 524 if (verf.tv_sec != 0) { 525 verf.tv_nsec = gethrestime_sec(); 526 } else { 527 timespec_t tverf; 528 529 gethrestime(&tverf); 530 verf.tv_sec = (time_t)tverf.tv_sec; 531 verf.tv_nsec = tverf.tv_nsec; 532 } 533 534 Write4verf = *(uint64_t *)&verf; 535 536 rfs4_attr_init(); 537 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 538 539 /* Used to manage create/destroy of server state */ 540 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 541 542 /* Used to manage access to server instance linked list */ 543 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 544 545 /* Used to manage access to rfs4_deleg_policy */ 546 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 547 548 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 549 if (error != 0) { 550 rfs4_disable_delegation(); 551 } else { 552 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 553 &deleg_wrops); 554 if (error != 0) { 555 rfs4_disable_delegation(); 556 fem_free(deleg_rdops); 557 } 558 } 559 560 nfs4_srv_caller_id = fs_new_caller_id(); 561 562 lockt_sysid = lm_alloc_sysidt(); 563 564 vsd_create(&nfs4_srv_vkey, NULL); 565 566 return (0); 567 } 568 569 void 570 rfs4_srvrfini(void) 571 { 572 extern krwlock_t rfs4_deleg_policy_lock; 573 574 if (lockt_sysid != LM_NOSYSID) { 575 lm_free_sysidt(lockt_sysid); 576 lockt_sysid = LM_NOSYSID; 577 } 578 579 mutex_destroy(&rfs4_deleg_lock); 580 mutex_destroy(&rfs4_state_lock); 581 rw_destroy(&rfs4_deleg_policy_lock); 582 583 fem_free(deleg_rdops); 584 fem_free(deleg_wrops); 585 } 586 587 void 588 rfs4_init_compound_state(struct compound_state *cs) 589 { 590 bzero(cs, sizeof (*cs)); 591 cs->cont = TRUE; 592 cs->access = CS_ACCESS_DENIED; 593 cs->deleg = FALSE; 594 cs->mandlock = FALSE; 595 cs->fh.nfs_fh4_val = cs->fhbuf; 596 } 597 598 void 599 rfs4_grace_start(rfs4_servinst_t *sip) 600 { 601 time_t now = gethrestime_sec(); 602 603 rw_enter(&sip->rwlock, RW_WRITER); 604 sip->start_time = now; 605 sip->grace_period = rfs4_grace_period; 606 rw_exit(&sip->rwlock); 607 } 608 609 /* 610 * returns true if the instance's grace period has never been started 611 */ 612 int 613 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 614 { 615 time_t start_time; 616 617 rw_enter(&sip->rwlock, RW_READER); 618 start_time = sip->start_time; 619 rw_exit(&sip->rwlock); 620 621 return (start_time == 0); 622 } 623 624 /* 625 * Indicates if server instance is within the 626 * grace period. 627 */ 628 int 629 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 630 { 631 time_t grace_expiry; 632 633 rw_enter(&sip->rwlock, RW_READER); 634 grace_expiry = sip->start_time + sip->grace_period; 635 rw_exit(&sip->rwlock); 636 637 return (gethrestime_sec() < grace_expiry); 638 } 639 640 int 641 rfs4_clnt_in_grace(rfs4_client_t *cp) 642 { 643 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 644 645 return (rfs4_servinst_in_grace(cp->server_instance)); 646 } 647 648 /* 649 * reset all currently active grace periods 650 */ 651 void 652 rfs4_grace_reset_all(void) 653 { 654 rfs4_servinst_t *sip; 655 656 mutex_enter(&rfs4_servinst_lock); 657 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 658 if (rfs4_servinst_in_grace(sip)) 659 rfs4_grace_start(sip); 660 mutex_exit(&rfs4_servinst_lock); 661 } 662 663 /* 664 * start any new instances' grace periods 665 */ 666 void 667 rfs4_grace_start_new(void) 668 { 669 rfs4_servinst_t *sip; 670 671 mutex_enter(&rfs4_servinst_lock); 672 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 673 if (rfs4_servinst_grace_new(sip)) 674 rfs4_grace_start(sip); 675 mutex_exit(&rfs4_servinst_lock); 676 } 677 678 static rfs4_dss_path_t * 679 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 680 { 681 size_t len; 682 rfs4_dss_path_t *dss_path; 683 684 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 685 686 /* 687 * Take a copy of the string, since the original may be overwritten. 688 * Sadly, no strdup() in the kernel. 689 */ 690 /* allow for NUL */ 691 len = strlen(path) + 1; 692 dss_path->path = kmem_alloc(len, KM_SLEEP); 693 (void) strlcpy(dss_path->path, path, len); 694 695 /* associate with servinst */ 696 dss_path->sip = sip; 697 dss_path->index = index; 698 699 /* 700 * Add to list of served paths. 701 * No locking required, as we're only ever called at startup. 702 */ 703 if (rfs4_dss_pathlist == NULL) { 704 /* this is the first dss_path_t */ 705 706 /* needed for insque/remque */ 707 dss_path->next = dss_path->prev = dss_path; 708 709 rfs4_dss_pathlist = dss_path; 710 } else { 711 insque(dss_path, rfs4_dss_pathlist); 712 } 713 714 return (dss_path); 715 } 716 717 /* 718 * Create a new server instance, and make it the currently active instance. 719 * Note that starting the grace period too early will reduce the clients' 720 * recovery window. 721 */ 722 void 723 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 724 { 725 unsigned i; 726 rfs4_servinst_t *sip; 727 rfs4_oldstate_t *oldstate; 728 729 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 730 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 731 732 sip->start_time = (time_t)0; 733 sip->grace_period = (time_t)0; 734 sip->next = NULL; 735 sip->prev = NULL; 736 737 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 738 /* 739 * This initial dummy entry is required to setup for insque/remque. 740 * It must be skipped over whenever the list is traversed. 741 */ 742 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 743 /* insque/remque require initial list entry to be self-terminated */ 744 oldstate->next = oldstate; 745 oldstate->prev = oldstate; 746 sip->oldstate = oldstate; 747 748 749 sip->dss_npaths = dss_npaths; 750 sip->dss_paths = kmem_alloc(dss_npaths * 751 sizeof (rfs4_dss_path_t *), KM_SLEEP); 752 753 for (i = 0; i < dss_npaths; i++) { 754 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 755 } 756 757 mutex_enter(&rfs4_servinst_lock); 758 if (rfs4_cur_servinst != NULL) { 759 /* add to linked list */ 760 sip->prev = rfs4_cur_servinst; 761 rfs4_cur_servinst->next = sip; 762 } 763 if (start_grace) 764 rfs4_grace_start(sip); 765 /* make the new instance "current" */ 766 rfs4_cur_servinst = sip; 767 768 mutex_exit(&rfs4_servinst_lock); 769 } 770 771 /* 772 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 773 * all instances directly. 774 */ 775 void 776 rfs4_servinst_destroy_all(void) 777 { 778 rfs4_servinst_t *sip, *prev, *current; 779 #ifdef DEBUG 780 int n = 0; 781 #endif 782 783 mutex_enter(&rfs4_servinst_lock); 784 ASSERT(rfs4_cur_servinst != NULL); 785 current = rfs4_cur_servinst; 786 rfs4_cur_servinst = NULL; 787 for (sip = current; sip != NULL; sip = prev) { 788 prev = sip->prev; 789 rw_destroy(&sip->rwlock); 790 if (sip->oldstate) 791 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 792 if (sip->dss_paths) 793 kmem_free(sip->dss_paths, 794 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 795 kmem_free(sip, sizeof (rfs4_servinst_t)); 796 #ifdef DEBUG 797 n++; 798 #endif 799 } 800 mutex_exit(&rfs4_servinst_lock); 801 } 802 803 /* 804 * Assign the current server instance to a client_t. 805 * Should be called with cp->dbe held. 806 */ 807 void 808 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 809 { 810 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 811 812 /* 813 * The lock ensures that if the current instance is in the process 814 * of changing, we will see the new one. 815 */ 816 mutex_enter(&rfs4_servinst_lock); 817 cp->server_instance = sip; 818 mutex_exit(&rfs4_servinst_lock); 819 } 820 821 rfs4_servinst_t * 822 rfs4_servinst(rfs4_client_t *cp) 823 { 824 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 825 826 return (cp->server_instance); 827 } 828 829 /* ARGSUSED */ 830 static void 831 nullfree(caddr_t resop) 832 { 833 } 834 835 /* 836 * This is a fall-through for invalid or not implemented (yet) ops 837 */ 838 /* ARGSUSED */ 839 static void 840 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 841 struct compound_state *cs) 842 { 843 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 844 } 845 846 /* 847 * Check if the security flavor, nfsnum, is in the flavor_list. 848 */ 849 bool_t 850 in_flavor_list(int nfsnum, int *flavor_list, int count) 851 { 852 int i; 853 854 for (i = 0; i < count; i++) { 855 if (nfsnum == flavor_list[i]) 856 return (TRUE); 857 } 858 return (FALSE); 859 } 860 861 /* 862 * Used by rfs4_op_secinfo to get the security information from the 863 * export structure associated with the component. 864 */ 865 /* ARGSUSED */ 866 static nfsstat4 867 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 868 { 869 int error, different_export = 0; 870 vnode_t *dvp, *vp, *tvp; 871 struct exportinfo *exi = NULL; 872 fid_t fid; 873 uint_t count, i; 874 secinfo4 *resok_val; 875 struct secinfo *secp; 876 seconfig_t *si; 877 bool_t did_traverse; 878 int dotdot, walk; 879 880 dvp = cs->vp; 881 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 882 883 /* 884 * If dotdotting, then need to check whether it's above the 885 * root of a filesystem, or above an export point. 886 */ 887 if (dotdot) { 888 889 /* 890 * If dotdotting at the root of a filesystem, then 891 * need to traverse back to the mounted-on filesystem 892 * and do the dotdot lookup there. 893 */ 894 if (cs->vp->v_flag & VROOT) { 895 896 /* 897 * If at the system root, then can 898 * go up no further. 899 */ 900 if (VN_CMP(dvp, rootdir)) 901 return (puterrno4(ENOENT)); 902 903 /* 904 * Traverse back to the mounted-on filesystem 905 */ 906 dvp = untraverse(cs->vp); 907 908 /* 909 * Set the different_export flag so we remember 910 * to pick up a new exportinfo entry for 911 * this new filesystem. 912 */ 913 different_export = 1; 914 } else { 915 916 /* 917 * If dotdotting above an export point then set 918 * the different_export to get new export info. 919 */ 920 different_export = nfs_exported(cs->exi, cs->vp); 921 } 922 } 923 924 /* 925 * Get the vnode for the component "nm". 926 */ 927 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 928 NULL, NULL, NULL); 929 if (error) 930 return (puterrno4(error)); 931 932 /* 933 * If the vnode is in a pseudo filesystem, or if the security flavor 934 * used in the request is valid but not an explicitly shared flavor, 935 * or the access bit indicates that this is a limited access, 936 * check whether this vnode is visible. 937 */ 938 if (!different_export && 939 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 940 cs->access & CS_ACCESS_LIMITED)) { 941 if (! nfs_visible(cs->exi, vp, &different_export)) { 942 VN_RELE(vp); 943 return (puterrno4(ENOENT)); 944 } 945 } 946 947 /* 948 * If it's a mountpoint, then traverse it. 949 */ 950 if (vn_ismntpt(vp)) { 951 tvp = vp; 952 if ((error = traverse(&tvp)) != 0) { 953 VN_RELE(vp); 954 return (puterrno4(error)); 955 } 956 /* remember that we had to traverse mountpoint */ 957 did_traverse = TRUE; 958 vp = tvp; 959 different_export = 1; 960 } else if (vp->v_vfsp != dvp->v_vfsp) { 961 /* 962 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 963 * then vp is probably an LOFS object. We don't need the 964 * realvp, we just need to know that we might have crossed 965 * a server fs boundary and need to call checkexport4. 966 * (LOFS lookup hides server fs mountpoints, and actually calls 967 * traverse) 968 */ 969 different_export = 1; 970 did_traverse = FALSE; 971 } 972 973 /* 974 * Get the export information for it. 975 */ 976 if (different_export) { 977 978 bzero(&fid, sizeof (fid)); 979 fid.fid_len = MAXFIDSZ; 980 error = vop_fid_pseudo(vp, &fid); 981 if (error) { 982 VN_RELE(vp); 983 return (puterrno4(error)); 984 } 985 986 if (dotdot) 987 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 988 else 989 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 990 991 if (exi == NULL) { 992 if (did_traverse == TRUE) { 993 /* 994 * If this vnode is a mounted-on vnode, 995 * but the mounted-on file system is not 996 * exported, send back the secinfo for 997 * the exported node that the mounted-on 998 * vnode lives in. 999 */ 1000 exi = cs->exi; 1001 } else { 1002 VN_RELE(vp); 1003 return (puterrno4(EACCES)); 1004 } 1005 } 1006 } else { 1007 exi = cs->exi; 1008 } 1009 ASSERT(exi != NULL); 1010 1011 1012 /* 1013 * Create the secinfo result based on the security information 1014 * from the exportinfo structure (exi). 1015 * 1016 * Return all flavors for a pseudo node. 1017 * For a real export node, return the flavor that the client 1018 * has access with. 1019 */ 1020 ASSERT(RW_LOCK_HELD(&exported_lock)); 1021 if (PSEUDO(exi)) { 1022 count = exi->exi_export.ex_seccnt; /* total sec count */ 1023 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1024 secp = exi->exi_export.ex_secinfo; 1025 1026 for (i = 0; i < count; i++) { 1027 si = &secp[i].s_secinfo; 1028 resok_val[i].flavor = si->sc_rpcnum; 1029 if (resok_val[i].flavor == RPCSEC_GSS) { 1030 rpcsec_gss_info *info; 1031 1032 info = &resok_val[i].flavor_info; 1033 info->qop = si->sc_qop; 1034 info->service = (rpc_gss_svc_t)si->sc_service; 1035 1036 /* get oid opaque data */ 1037 info->oid.sec_oid4_len = 1038 si->sc_gss_mech_type->length; 1039 info->oid.sec_oid4_val = kmem_alloc( 1040 si->sc_gss_mech_type->length, KM_SLEEP); 1041 bcopy( 1042 si->sc_gss_mech_type->elements, 1043 info->oid.sec_oid4_val, 1044 info->oid.sec_oid4_len); 1045 } 1046 } 1047 resp->SECINFO4resok_len = count; 1048 resp->SECINFO4resok_val = resok_val; 1049 } else { 1050 int ret_cnt = 0, k = 0; 1051 int *flavor_list; 1052 1053 count = exi->exi_export.ex_seccnt; /* total sec count */ 1054 secp = exi->exi_export.ex_secinfo; 1055 1056 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1057 /* find out which flavors to return */ 1058 for (i = 0; i < count; i ++) { 1059 int access, flavor, perm; 1060 1061 flavor = secp[i].s_secinfo.sc_nfsnum; 1062 perm = secp[i].s_flags; 1063 1064 access = nfsauth4_secinfo_access(exi, cs->req, 1065 flavor, perm); 1066 1067 if (! (access & NFSAUTH_DENIED) && 1068 ! (access & NFSAUTH_WRONGSEC)) { 1069 flavor_list[ret_cnt] = flavor; 1070 ret_cnt++; 1071 } 1072 } 1073 1074 /* Create the returning SECINFO value */ 1075 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1076 1077 for (i = 0; i < count; i++) { 1078 /* 1079 * If the flavor is in the flavor list, 1080 * fill in resok_val. 1081 */ 1082 si = &secp[i].s_secinfo; 1083 if (in_flavor_list(si->sc_nfsnum, 1084 flavor_list, ret_cnt)) { 1085 resok_val[k].flavor = si->sc_rpcnum; 1086 if (resok_val[k].flavor == RPCSEC_GSS) { 1087 rpcsec_gss_info *info; 1088 1089 info = &resok_val[k].flavor_info; 1090 info->qop = si->sc_qop; 1091 info->service = (rpc_gss_svc_t) 1092 si->sc_service; 1093 1094 /* get oid opaque data */ 1095 info->oid.sec_oid4_len = 1096 si->sc_gss_mech_type->length; 1097 info->oid.sec_oid4_val = kmem_alloc( 1098 si->sc_gss_mech_type->length, 1099 KM_SLEEP); 1100 bcopy(si->sc_gss_mech_type->elements, 1101 info->oid.sec_oid4_val, 1102 info->oid.sec_oid4_len); 1103 } 1104 k++; 1105 } 1106 if (k >= ret_cnt) 1107 break; 1108 } 1109 resp->SECINFO4resok_len = ret_cnt; 1110 resp->SECINFO4resok_val = resok_val; 1111 kmem_free(flavor_list, count * sizeof (int)); 1112 } 1113 1114 VN_RELE(vp); 1115 return (NFS4_OK); 1116 } 1117 1118 /* 1119 * SECINFO (Operation 33): Obtain required security information on 1120 * the component name in the format of (security-mechanism-oid, qop, service) 1121 * triplets. 1122 */ 1123 /* ARGSUSED */ 1124 static void 1125 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1126 struct compound_state *cs) 1127 { 1128 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1129 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1130 utf8string *utfnm = &args->name; 1131 uint_t len; 1132 char *nm; 1133 1134 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1135 SECINFO4args *, args); 1136 1137 /* 1138 * Current file handle (cfh) should have been set before getting 1139 * into this function. If not, return error. 1140 */ 1141 if (cs->vp == NULL) { 1142 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1143 goto out; 1144 } 1145 1146 if (cs->vp->v_type != VDIR) { 1147 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1148 goto out; 1149 } 1150 1151 /* 1152 * Verify the component name. If failed, error out, but 1153 * do not error out if the component name is a "..". 1154 * SECINFO will return its parents secinfo data for SECINFO "..". 1155 */ 1156 if (!utf8_dir_verify(utfnm)) { 1157 if (utfnm->utf8string_len != 2 || 1158 utfnm->utf8string_val[0] != '.' || 1159 utfnm->utf8string_val[1] != '.') { 1160 *cs->statusp = resp->status = NFS4ERR_INVAL; 1161 goto out; 1162 } 1163 } 1164 1165 nm = utf8_to_str(utfnm, &len, NULL); 1166 if (nm == NULL) { 1167 *cs->statusp = resp->status = NFS4ERR_INVAL; 1168 goto out; 1169 } 1170 1171 if (len > MAXNAMELEN) { 1172 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1173 kmem_free(nm, len); 1174 goto out; 1175 } 1176 1177 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, nm, resp); 1178 1179 kmem_free(nm, len); 1180 1181 out: 1182 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1183 SECINFO4res *, resp); 1184 } 1185 1186 /* 1187 * Free SECINFO result. 1188 */ 1189 /* ARGSUSED */ 1190 static void 1191 rfs4_op_secinfo_free(nfs_resop4 *resop) 1192 { 1193 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1194 int count, i; 1195 secinfo4 *resok_val; 1196 1197 /* If this is not an Ok result, nothing to free. */ 1198 if (resp->status != NFS4_OK) { 1199 return; 1200 } 1201 1202 count = resp->SECINFO4resok_len; 1203 resok_val = resp->SECINFO4resok_val; 1204 1205 for (i = 0; i < count; i++) { 1206 if (resok_val[i].flavor == RPCSEC_GSS) { 1207 rpcsec_gss_info *info; 1208 1209 info = &resok_val[i].flavor_info; 1210 kmem_free(info->oid.sec_oid4_val, 1211 info->oid.sec_oid4_len); 1212 } 1213 } 1214 kmem_free(resok_val, count * sizeof (secinfo4)); 1215 resp->SECINFO4resok_len = 0; 1216 resp->SECINFO4resok_val = NULL; 1217 } 1218 1219 /* ARGSUSED */ 1220 static void 1221 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1222 struct compound_state *cs) 1223 { 1224 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1225 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1226 int error; 1227 vnode_t *vp; 1228 struct vattr va; 1229 int checkwriteperm; 1230 cred_t *cr = cs->cr; 1231 bslabel_t *clabel, *slabel; 1232 ts_label_t *tslabel; 1233 boolean_t admin_low_client; 1234 1235 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1236 ACCESS4args *, args); 1237 1238 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1239 if (cs->access == CS_ACCESS_DENIED) { 1240 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1241 goto out; 1242 } 1243 #endif 1244 if (cs->vp == NULL) { 1245 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1246 goto out; 1247 } 1248 1249 ASSERT(cr != NULL); 1250 1251 vp = cs->vp; 1252 1253 /* 1254 * If the file system is exported read only, it is not appropriate 1255 * to check write permissions for regular files and directories. 1256 * Special files are interpreted by the client, so the underlying 1257 * permissions are sent back to the client for interpretation. 1258 */ 1259 if (rdonly4(cs->exi, cs->vp, req) && 1260 (vp->v_type == VREG || vp->v_type == VDIR)) 1261 checkwriteperm = 0; 1262 else 1263 checkwriteperm = 1; 1264 1265 /* 1266 * XXX 1267 * We need the mode so that we can correctly determine access 1268 * permissions relative to a mandatory lock file. Access to 1269 * mandatory lock files is denied on the server, so it might 1270 * as well be reflected to the server during the open. 1271 */ 1272 va.va_mask = AT_MODE; 1273 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1274 if (error) { 1275 *cs->statusp = resp->status = puterrno4(error); 1276 goto out; 1277 } 1278 resp->access = 0; 1279 resp->supported = 0; 1280 1281 if (is_system_labeled()) { 1282 ASSERT(req->rq_label != NULL); 1283 clabel = req->rq_label; 1284 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1285 "got client label from request(1)", 1286 struct svc_req *, req); 1287 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1288 if ((tslabel = nfs_getflabel(vp)) == NULL) { 1289 *cs->statusp = resp->status = puterrno4(EACCES); 1290 goto out; 1291 } 1292 slabel = label2bslabel(tslabel); 1293 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1294 char *, "got server label(1) for vp(2)", 1295 bslabel_t *, slabel, vnode_t *, vp); 1296 1297 admin_low_client = B_FALSE; 1298 } else 1299 admin_low_client = B_TRUE; 1300 } 1301 1302 if (args->access & ACCESS4_READ) { 1303 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1304 if (!error && !MANDLOCK(vp, va.va_mode) && 1305 (!is_system_labeled() || admin_low_client || 1306 bldominates(clabel, slabel))) 1307 resp->access |= ACCESS4_READ; 1308 resp->supported |= ACCESS4_READ; 1309 } 1310 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1311 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1312 if (!error && (!is_system_labeled() || admin_low_client || 1313 bldominates(clabel, slabel))) 1314 resp->access |= ACCESS4_LOOKUP; 1315 resp->supported |= ACCESS4_LOOKUP; 1316 } 1317 if (checkwriteperm && 1318 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1319 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1320 if (!error && !MANDLOCK(vp, va.va_mode) && 1321 (!is_system_labeled() || admin_low_client || 1322 blequal(clabel, slabel))) 1323 resp->access |= 1324 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND)); 1325 resp->supported |= (ACCESS4_MODIFY|ACCESS4_EXTEND); 1326 } 1327 1328 if (checkwriteperm && 1329 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1330 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1331 if (!error && (!is_system_labeled() || admin_low_client || 1332 blequal(clabel, slabel))) 1333 resp->access |= ACCESS4_DELETE; 1334 resp->supported |= ACCESS4_DELETE; 1335 } 1336 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1337 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1338 if (!error && !MANDLOCK(vp, va.va_mode) && 1339 (!is_system_labeled() || admin_low_client || 1340 bldominates(clabel, slabel))) 1341 resp->access |= ACCESS4_EXECUTE; 1342 resp->supported |= ACCESS4_EXECUTE; 1343 } 1344 1345 if (is_system_labeled() && !admin_low_client) 1346 label_rele(tslabel); 1347 1348 *cs->statusp = resp->status = NFS4_OK; 1349 out: 1350 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1351 ACCESS4res *, resp); 1352 } 1353 1354 /* ARGSUSED */ 1355 static void 1356 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1357 struct compound_state *cs) 1358 { 1359 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1360 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1361 int error; 1362 vnode_t *vp = cs->vp; 1363 cred_t *cr = cs->cr; 1364 vattr_t va; 1365 1366 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1367 COMMIT4args *, args); 1368 1369 if (vp == NULL) { 1370 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1371 goto out; 1372 } 1373 if (cs->access == CS_ACCESS_DENIED) { 1374 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1375 goto out; 1376 } 1377 1378 if (args->offset + args->count < args->offset) { 1379 *cs->statusp = resp->status = NFS4ERR_INVAL; 1380 goto out; 1381 } 1382 1383 va.va_mask = AT_UID; 1384 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1385 1386 /* 1387 * If we can't get the attributes, then we can't do the 1388 * right access checking. So, we'll fail the request. 1389 */ 1390 if (error) { 1391 *cs->statusp = resp->status = puterrno4(error); 1392 goto out; 1393 } 1394 if (rdonly4(cs->exi, cs->vp, req)) { 1395 *cs->statusp = resp->status = NFS4ERR_ROFS; 1396 goto out; 1397 } 1398 1399 if (vp->v_type != VREG) { 1400 if (vp->v_type == VDIR) 1401 resp->status = NFS4ERR_ISDIR; 1402 else 1403 resp->status = NFS4ERR_INVAL; 1404 *cs->statusp = resp->status; 1405 goto out; 1406 } 1407 1408 if (crgetuid(cr) != va.va_uid && 1409 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1410 *cs->statusp = resp->status = puterrno4(error); 1411 goto out; 1412 } 1413 1414 error = VOP_PUTPAGE(vp, args->offset, args->count, 0, cr, NULL); 1415 if (!error) 1416 error = VOP_FSYNC(vp, FNODSYNC, cr, NULL); 1417 1418 if (error) { 1419 *cs->statusp = resp->status = puterrno4(error); 1420 goto out; 1421 } 1422 1423 *cs->statusp = resp->status = NFS4_OK; 1424 resp->writeverf = Write4verf; 1425 out: 1426 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1427 COMMIT4res *, resp); 1428 } 1429 1430 /* 1431 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1432 * was completed. It does the nfsv4 create for special files. 1433 */ 1434 /* ARGSUSED */ 1435 static vnode_t * 1436 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1437 struct compound_state *cs, vattr_t *vap, char *nm) 1438 { 1439 int error; 1440 cred_t *cr = cs->cr; 1441 vnode_t *dvp = cs->vp; 1442 vnode_t *vp = NULL; 1443 int mode; 1444 enum vcexcl excl; 1445 1446 switch (args->type) { 1447 case NF4CHR: 1448 case NF4BLK: 1449 if (secpolicy_sys_devices(cr) != 0) { 1450 *cs->statusp = resp->status = NFS4ERR_PERM; 1451 return (NULL); 1452 } 1453 if (args->type == NF4CHR) 1454 vap->va_type = VCHR; 1455 else 1456 vap->va_type = VBLK; 1457 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1458 args->ftype4_u.devdata.specdata2); 1459 vap->va_mask |= AT_RDEV; 1460 break; 1461 case NF4SOCK: 1462 vap->va_type = VSOCK; 1463 break; 1464 case NF4FIFO: 1465 vap->va_type = VFIFO; 1466 break; 1467 default: 1468 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1469 return (NULL); 1470 } 1471 1472 /* 1473 * Must specify the mode. 1474 */ 1475 if (!(vap->va_mask & AT_MODE)) { 1476 *cs->statusp = resp->status = NFS4ERR_INVAL; 1477 return (NULL); 1478 } 1479 1480 excl = EXCL; 1481 1482 mode = 0; 1483 1484 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1485 if (error) { 1486 *cs->statusp = resp->status = puterrno4(error); 1487 return (NULL); 1488 } 1489 return (vp); 1490 } 1491 1492 /* 1493 * nfsv4 create is used to create non-regular files. For regular files, 1494 * use nfsv4 open. 1495 */ 1496 /* ARGSUSED */ 1497 static void 1498 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1499 struct compound_state *cs) 1500 { 1501 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1502 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1503 int error; 1504 struct vattr bva, iva, iva2, ava, *vap; 1505 cred_t *cr = cs->cr; 1506 vnode_t *dvp = cs->vp; 1507 vnode_t *vp = NULL; 1508 char *nm, *lnm; 1509 uint_t len, llen; 1510 int syncval = 0; 1511 struct nfs4_svgetit_arg sarg; 1512 struct nfs4_ntov_table ntov; 1513 struct statvfs64 sb; 1514 nfsstat4 status; 1515 1516 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1517 CREATE4args *, args); 1518 1519 resp->attrset = 0; 1520 1521 if (dvp == NULL) { 1522 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1523 goto out; 1524 } 1525 1526 /* 1527 * If there is an unshared filesystem mounted on this vnode, 1528 * do not allow to create an object in this directory. 1529 */ 1530 if (vn_ismntpt(dvp)) { 1531 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1532 goto out; 1533 } 1534 1535 /* Verify that type is correct */ 1536 switch (args->type) { 1537 case NF4LNK: 1538 case NF4BLK: 1539 case NF4CHR: 1540 case NF4SOCK: 1541 case NF4FIFO: 1542 case NF4DIR: 1543 break; 1544 default: 1545 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1546 goto out; 1547 }; 1548 1549 if (cs->access == CS_ACCESS_DENIED) { 1550 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1551 goto out; 1552 } 1553 if (dvp->v_type != VDIR) { 1554 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1555 goto out; 1556 } 1557 if (!utf8_dir_verify(&args->objname)) { 1558 *cs->statusp = resp->status = NFS4ERR_INVAL; 1559 goto out; 1560 } 1561 1562 if (rdonly4(cs->exi, cs->vp, req)) { 1563 *cs->statusp = resp->status = NFS4ERR_ROFS; 1564 goto out; 1565 } 1566 1567 /* 1568 * Name of newly created object 1569 */ 1570 nm = utf8_to_fn(&args->objname, &len, NULL); 1571 if (nm == NULL) { 1572 *cs->statusp = resp->status = NFS4ERR_INVAL; 1573 goto out; 1574 } 1575 1576 if (len > MAXNAMELEN) { 1577 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1578 kmem_free(nm, len); 1579 goto out; 1580 } 1581 1582 resp->attrset = 0; 1583 1584 sarg.sbp = &sb; 1585 nfs4_ntov_table_init(&ntov); 1586 1587 status = do_rfs4_set_attrs(&resp->attrset, 1588 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1589 1590 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1591 status = NFS4ERR_INVAL; 1592 1593 if (status != NFS4_OK) { 1594 *cs->statusp = resp->status = status; 1595 kmem_free(nm, len); 1596 nfs4_ntov_table_free(&ntov, &sarg); 1597 resp->attrset = 0; 1598 goto out; 1599 } 1600 1601 /* Get "before" change value */ 1602 bva.va_mask = AT_CTIME|AT_SEQ; 1603 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1604 if (error) { 1605 *cs->statusp = resp->status = puterrno4(error); 1606 kmem_free(nm, len); 1607 nfs4_ntov_table_free(&ntov, &sarg); 1608 resp->attrset = 0; 1609 goto out; 1610 } 1611 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1612 1613 vap = sarg.vap; 1614 1615 /* 1616 * Set default initial values for attributes when not specified 1617 * in createattrs. 1618 */ 1619 if ((vap->va_mask & AT_UID) == 0) { 1620 vap->va_uid = crgetuid(cr); 1621 vap->va_mask |= AT_UID; 1622 } 1623 if ((vap->va_mask & AT_GID) == 0) { 1624 vap->va_gid = crgetgid(cr); 1625 vap->va_mask |= AT_GID; 1626 } 1627 1628 vap->va_mask |= AT_TYPE; 1629 switch (args->type) { 1630 case NF4DIR: 1631 vap->va_type = VDIR; 1632 if ((vap->va_mask & AT_MODE) == 0) { 1633 vap->va_mode = 0700; /* default: owner rwx only */ 1634 vap->va_mask |= AT_MODE; 1635 } 1636 error = VOP_MKDIR(dvp, nm, vap, &vp, cr, NULL, 0, NULL); 1637 if (error) 1638 break; 1639 1640 /* 1641 * Get the initial "after" sequence number, if it fails, 1642 * set to zero 1643 */ 1644 iva.va_mask = AT_SEQ; 1645 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1646 iva.va_seq = 0; 1647 break; 1648 case NF4LNK: 1649 vap->va_type = VLNK; 1650 if ((vap->va_mask & AT_MODE) == 0) { 1651 vap->va_mode = 0700; /* default: owner rwx only */ 1652 vap->va_mask |= AT_MODE; 1653 } 1654 1655 /* 1656 * symlink names must be treated as data 1657 */ 1658 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1659 1660 if (lnm == NULL) { 1661 *cs->statusp = resp->status = NFS4ERR_INVAL; 1662 kmem_free(nm, len); 1663 nfs4_ntov_table_free(&ntov, &sarg); 1664 resp->attrset = 0; 1665 goto out; 1666 } 1667 1668 if (llen > MAXPATHLEN) { 1669 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1670 kmem_free(nm, len); 1671 kmem_free(lnm, llen); 1672 nfs4_ntov_table_free(&ntov, &sarg); 1673 resp->attrset = 0; 1674 goto out; 1675 } 1676 1677 error = VOP_SYMLINK(dvp, nm, vap, lnm, cr, NULL, 0); 1678 if (lnm != NULL) 1679 kmem_free(lnm, llen); 1680 if (error) 1681 break; 1682 1683 /* 1684 * Get the initial "after" sequence number, if it fails, 1685 * set to zero 1686 */ 1687 iva.va_mask = AT_SEQ; 1688 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1689 iva.va_seq = 0; 1690 1691 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, 1692 NULL, NULL, NULL); 1693 if (error) 1694 break; 1695 1696 /* 1697 * va_seq is not safe over VOP calls, check it again 1698 * if it has changed zero out iva to force atomic = FALSE. 1699 */ 1700 iva2.va_mask = AT_SEQ; 1701 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1702 iva2.va_seq != iva.va_seq) 1703 iva.va_seq = 0; 1704 break; 1705 default: 1706 /* 1707 * probably a special file. 1708 */ 1709 if ((vap->va_mask & AT_MODE) == 0) { 1710 vap->va_mode = 0600; /* default: owner rw only */ 1711 vap->va_mask |= AT_MODE; 1712 } 1713 syncval = FNODSYNC; 1714 /* 1715 * We know this will only generate one VOP call 1716 */ 1717 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, nm); 1718 1719 if (vp == NULL) { 1720 kmem_free(nm, len); 1721 nfs4_ntov_table_free(&ntov, &sarg); 1722 resp->attrset = 0; 1723 goto out; 1724 } 1725 1726 /* 1727 * Get the initial "after" sequence number, if it fails, 1728 * set to zero 1729 */ 1730 iva.va_mask = AT_SEQ; 1731 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1732 iva.va_seq = 0; 1733 1734 break; 1735 } 1736 kmem_free(nm, len); 1737 1738 if (error) { 1739 *cs->statusp = resp->status = puterrno4(error); 1740 } 1741 1742 /* 1743 * Force modified data and metadata out to stable storage. 1744 */ 1745 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1746 1747 if (resp->status != NFS4_OK) { 1748 if (vp != NULL) 1749 VN_RELE(vp); 1750 nfs4_ntov_table_free(&ntov, &sarg); 1751 resp->attrset = 0; 1752 goto out; 1753 } 1754 1755 /* 1756 * Finish setup of cinfo response, "before" value already set. 1757 * Get "after" change value, if it fails, simply return the 1758 * before value. 1759 */ 1760 ava.va_mask = AT_CTIME|AT_SEQ; 1761 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1762 ava.va_ctime = bva.va_ctime; 1763 ava.va_seq = 0; 1764 } 1765 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1766 1767 /* 1768 * True verification that object was created with correct 1769 * attrs is impossible. The attrs could have been changed 1770 * immediately after object creation. If attributes did 1771 * not verify, the only recourse for the server is to 1772 * destroy the object. Maybe if some attrs (like gid) 1773 * are set incorrectly, the object should be destroyed; 1774 * however, seems bad as a default policy. Do we really 1775 * want to destroy an object over one of the times not 1776 * verifying correctly? For these reasons, the server 1777 * currently sets bits in attrset for createattrs 1778 * that were set; however, no verification is done. 1779 * 1780 * vmask_to_nmask accounts for vattr bits set on create 1781 * [do_rfs4_set_attrs() only sets resp bits for 1782 * non-vattr/vfs bits.] 1783 * Mask off any bits set by default so as not to return 1784 * more attrset bits than were requested in createattrs 1785 */ 1786 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1787 resp->attrset &= args->createattrs.attrmask; 1788 nfs4_ntov_table_free(&ntov, &sarg); 1789 1790 error = makefh4(&cs->fh, vp, cs->exi); 1791 if (error) { 1792 *cs->statusp = resp->status = puterrno4(error); 1793 } 1794 1795 /* 1796 * The cinfo.atomic = TRUE only if we got no errors, we have 1797 * non-zero va_seq's, and it has incremented by exactly one 1798 * during the creation and it didn't change during the VOP_LOOKUP 1799 * or VOP_FSYNC. 1800 */ 1801 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1802 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1803 resp->cinfo.atomic = TRUE; 1804 else 1805 resp->cinfo.atomic = FALSE; 1806 1807 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1808 1809 if (resp->status != NFS4_OK) { 1810 VN_RELE(vp); 1811 goto out; 1812 } 1813 if (cs->vp) 1814 VN_RELE(cs->vp); 1815 1816 cs->vp = vp; 1817 *cs->statusp = resp->status = NFS4_OK; 1818 out: 1819 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1820 CREATE4res *, resp); 1821 } 1822 1823 /*ARGSUSED*/ 1824 static void 1825 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1826 struct compound_state *cs) 1827 { 1828 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1829 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1830 1831 rfs4_op_inval(argop, resop, req, cs); 1832 1833 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1834 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1835 } 1836 1837 /*ARGSUSED*/ 1838 static void 1839 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1840 struct compound_state *cs) 1841 { 1842 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1843 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1844 rfs4_deleg_state_t *dsp; 1845 nfsstat4 status; 1846 1847 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1848 DELEGRETURN4args *, args); 1849 1850 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1851 resp->status = *cs->statusp = status; 1852 if (status != NFS4_OK) 1853 goto out; 1854 1855 /* Ensure specified filehandle matches */ 1856 if (cs->vp != dsp->finfo->vp) { 1857 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1858 } else 1859 rfs4_return_deleg(dsp, FALSE); 1860 1861 rfs4_update_lease(dsp->client); 1862 1863 rfs4_deleg_state_rele(dsp); 1864 out: 1865 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1866 DELEGRETURN4res *, resp); 1867 } 1868 1869 /* 1870 * Check to see if a given "flavor" is an explicitly shared flavor. 1871 * The assumption of this routine is the "flavor" is already a valid 1872 * flavor in the secinfo list of "exi". 1873 * 1874 * e.g. 1875 * # share -o sec=flavor1 /export 1876 * # share -o sec=flavor2 /export/home 1877 * 1878 * flavor2 is not an explicitly shared flavor for /export, 1879 * however it is in the secinfo list for /export thru the 1880 * server namespace setup. 1881 */ 1882 int 1883 is_exported_sec(int flavor, struct exportinfo *exi) 1884 { 1885 int i; 1886 struct secinfo *sp; 1887 1888 sp = exi->exi_export.ex_secinfo; 1889 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1890 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1891 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1892 return (SEC_REF_EXPORTED(&sp[i])); 1893 } 1894 } 1895 1896 /* Should not reach this point based on the assumption */ 1897 return (0); 1898 } 1899 1900 /* 1901 * Check if the security flavor used in the request matches what is 1902 * required at the export point or at the root pseudo node (exi_root). 1903 * 1904 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1905 * 1906 */ 1907 static int 1908 secinfo_match_or_authnone(struct compound_state *cs) 1909 { 1910 int i; 1911 struct secinfo *sp; 1912 1913 /* 1914 * Check cs->nfsflavor (from the request) against 1915 * the current export data in cs->exi. 1916 */ 1917 sp = cs->exi->exi_export.ex_secinfo; 1918 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1919 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1920 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1921 return (1); 1922 } 1923 1924 return (0); 1925 } 1926 1927 /* 1928 * Check the access authority for the client and return the correct error. 1929 */ 1930 nfsstat4 1931 call_checkauth4(struct compound_state *cs, struct svc_req *req) 1932 { 1933 int authres; 1934 1935 /* 1936 * First, check if the security flavor used in the request 1937 * are among the flavors set in the server namespace. 1938 */ 1939 if (!secinfo_match_or_authnone(cs)) { 1940 *cs->statusp = NFS4ERR_WRONGSEC; 1941 return (*cs->statusp); 1942 } 1943 1944 authres = checkauth4(cs, req); 1945 1946 if (authres > 0) { 1947 *cs->statusp = NFS4_OK; 1948 if (! (cs->access & CS_ACCESS_LIMITED)) 1949 cs->access = CS_ACCESS_OK; 1950 } else if (authres == 0) { 1951 *cs->statusp = NFS4ERR_ACCESS; 1952 } else if (authres == -2) { 1953 *cs->statusp = NFS4ERR_WRONGSEC; 1954 } else { 1955 *cs->statusp = NFS4ERR_DELAY; 1956 } 1957 return (*cs->statusp); 1958 } 1959 1960 /* 1961 * bitmap4_to_attrmask is called by getattr and readdir. 1962 * It sets up the vattr mask and determines whether vfsstat call is needed 1963 * based on the input bitmap. 1964 * Returns nfsv4 status. 1965 */ 1966 static nfsstat4 1967 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 1968 { 1969 int i; 1970 uint_t va_mask; 1971 struct statvfs64 *sbp = sargp->sbp; 1972 1973 sargp->sbp = NULL; 1974 sargp->flag = 0; 1975 sargp->rdattr_error = NFS4_OK; 1976 sargp->mntdfid_set = FALSE; 1977 if (sargp->cs->vp) 1978 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 1979 FH4_ATTRDIR | FH4_NAMEDATTR); 1980 else 1981 sargp->xattr = 0; 1982 1983 /* 1984 * Set rdattr_error_req to true if return error per 1985 * failed entry rather than fail the readdir. 1986 */ 1987 if (breq & FATTR4_RDATTR_ERROR_MASK) 1988 sargp->rdattr_error_req = 1; 1989 else 1990 sargp->rdattr_error_req = 0; 1991 1992 /* 1993 * generate the va_mask 1994 * Handle the easy cases first 1995 */ 1996 switch (breq) { 1997 case NFS4_NTOV_ATTR_MASK: 1998 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 1999 return (NFS4_OK); 2000 2001 case NFS4_FS_ATTR_MASK: 2002 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2003 sargp->sbp = sbp; 2004 return (NFS4_OK); 2005 2006 case NFS4_NTOV_ATTR_CACHE_MASK: 2007 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2008 return (NFS4_OK); 2009 2010 case FATTR4_LEASE_TIME_MASK: 2011 sargp->vap->va_mask = 0; 2012 return (NFS4_OK); 2013 2014 default: 2015 va_mask = 0; 2016 for (i = 0; i < nfs4_ntov_map_size; i++) { 2017 if ((breq & nfs4_ntov_map[i].fbit) && 2018 nfs4_ntov_map[i].vbit) 2019 va_mask |= nfs4_ntov_map[i].vbit; 2020 } 2021 2022 /* 2023 * Check is vfsstat is needed 2024 */ 2025 if (breq & NFS4_FS_ATTR_MASK) 2026 sargp->sbp = sbp; 2027 2028 sargp->vap->va_mask = va_mask; 2029 return (NFS4_OK); 2030 } 2031 /* NOTREACHED */ 2032 } 2033 2034 /* 2035 * bitmap4_get_sysattrs is called by getattr and readdir. 2036 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2037 * Returns nfsv4 status. 2038 */ 2039 static nfsstat4 2040 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2041 { 2042 int error; 2043 struct compound_state *cs = sargp->cs; 2044 vnode_t *vp = cs->vp; 2045 2046 if (sargp->sbp != NULL) { 2047 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2048 sargp->sbp = NULL; /* to identify error */ 2049 return (puterrno4(error)); 2050 } 2051 } 2052 2053 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2054 } 2055 2056 static void 2057 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2058 { 2059 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2060 KM_SLEEP); 2061 ntovp->attrcnt = 0; 2062 ntovp->vfsstat = FALSE; 2063 } 2064 2065 static void 2066 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2067 struct nfs4_svgetit_arg *sargp) 2068 { 2069 int i; 2070 union nfs4_attr_u *na; 2071 uint8_t *amap; 2072 2073 /* 2074 * XXX Should do the same checks for whether the bit is set 2075 */ 2076 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2077 i < ntovp->attrcnt; i++, na++, amap++) { 2078 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2079 NFS4ATTR_FREEIT, sargp, na); 2080 } 2081 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2082 /* 2083 * xdr_free for getattr will be done later 2084 */ 2085 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2086 i < ntovp->attrcnt; i++, na++, amap++) { 2087 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2088 } 2089 } 2090 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2091 } 2092 2093 /* 2094 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2095 */ 2096 static nfsstat4 2097 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2098 struct nfs4_svgetit_arg *sargp) 2099 { 2100 int error = 0; 2101 int i, k; 2102 struct nfs4_ntov_table ntov; 2103 XDR xdr; 2104 ulong_t xdr_size; 2105 char *xdr_attrs; 2106 nfsstat4 status = NFS4_OK; 2107 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2108 union nfs4_attr_u *na; 2109 uint8_t *amap; 2110 2111 sargp->op = NFS4ATTR_GETIT; 2112 sargp->flag = 0; 2113 2114 fattrp->attrmask = 0; 2115 /* if no bits requested, then return empty fattr4 */ 2116 if (breq == 0) { 2117 fattrp->attrlist4_len = 0; 2118 fattrp->attrlist4 = NULL; 2119 return (NFS4_OK); 2120 } 2121 2122 /* 2123 * return NFS4ERR_INVAL when client requests write-only attrs 2124 */ 2125 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2126 return (NFS4ERR_INVAL); 2127 2128 nfs4_ntov_table_init(&ntov); 2129 na = ntov.na; 2130 amap = ntov.amap; 2131 2132 /* 2133 * Now loop to get or verify the attrs 2134 */ 2135 for (i = 0; i < nfs4_ntov_map_size; i++) { 2136 if (breq & nfs4_ntov_map[i].fbit) { 2137 if ((*nfs4_ntov_map[i].sv_getit)( 2138 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2139 2140 error = (*nfs4_ntov_map[i].sv_getit)( 2141 NFS4ATTR_GETIT, sargp, na); 2142 2143 /* 2144 * Possible error values: 2145 * >0 if sv_getit failed to 2146 * get the attr; 0 if succeeded; 2147 * <0 if rdattr_error and the 2148 * attribute cannot be returned. 2149 */ 2150 if (error && !(sargp->rdattr_error_req)) 2151 goto done; 2152 /* 2153 * If error then just for entry 2154 */ 2155 if (error == 0) { 2156 fattrp->attrmask |= 2157 nfs4_ntov_map[i].fbit; 2158 *amap++ = 2159 (uint8_t)nfs4_ntov_map[i].nval; 2160 na++; 2161 (ntov.attrcnt)++; 2162 } else if ((error > 0) && 2163 (sargp->rdattr_error == NFS4_OK)) { 2164 sargp->rdattr_error = puterrno4(error); 2165 } 2166 error = 0; 2167 } 2168 } 2169 } 2170 2171 /* 2172 * If rdattr_error was set after the return value for it was assigned, 2173 * update it. 2174 */ 2175 if (prev_rdattr_error != sargp->rdattr_error) { 2176 na = ntov.na; 2177 amap = ntov.amap; 2178 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2179 k = *amap; 2180 if (k < FATTR4_RDATTR_ERROR) { 2181 continue; 2182 } 2183 if ((k == FATTR4_RDATTR_ERROR) && 2184 ((*nfs4_ntov_map[k].sv_getit)( 2185 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2186 2187 (void) (*nfs4_ntov_map[k].sv_getit)( 2188 NFS4ATTR_GETIT, sargp, na); 2189 } 2190 break; 2191 } 2192 } 2193 2194 xdr_size = 0; 2195 na = ntov.na; 2196 amap = ntov.amap; 2197 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2198 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2199 } 2200 2201 fattrp->attrlist4_len = xdr_size; 2202 if (xdr_size) { 2203 /* freed by rfs4_op_getattr_free() */ 2204 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2205 2206 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2207 2208 na = ntov.na; 2209 amap = ntov.amap; 2210 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2211 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2212 cmn_err(CE_WARN, "do_rfs4_op_getattr: xdr " 2213 "encode of attribute %d failed\n", *amap); 2214 status = NFS4ERR_SERVERFAULT; 2215 break; 2216 } 2217 } 2218 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2219 } else { 2220 fattrp->attrlist4 = NULL; 2221 } 2222 done: 2223 2224 nfs4_ntov_table_free(&ntov, sargp); 2225 2226 if (error != 0) 2227 status = puterrno4(error); 2228 2229 return (status); 2230 } 2231 2232 /* ARGSUSED */ 2233 static void 2234 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2235 struct compound_state *cs) 2236 { 2237 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2238 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2239 struct nfs4_svgetit_arg sarg; 2240 struct statvfs64 sb; 2241 nfsstat4 status; 2242 2243 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2244 GETATTR4args *, args); 2245 2246 if (cs->vp == NULL) { 2247 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2248 goto out; 2249 } 2250 2251 if (cs->access == CS_ACCESS_DENIED) { 2252 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2253 goto out; 2254 } 2255 2256 sarg.sbp = &sb; 2257 sarg.cs = cs; 2258 2259 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2260 if (status == NFS4_OK) { 2261 status = bitmap4_get_sysattrs(&sarg); 2262 if (status == NFS4_OK) 2263 status = do_rfs4_op_getattr(args->attr_request, 2264 &resp->obj_attributes, &sarg); 2265 } 2266 *cs->statusp = resp->status = status; 2267 out: 2268 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2269 GETATTR4res *, resp); 2270 } 2271 2272 static void 2273 rfs4_op_getattr_free(nfs_resop4 *resop) 2274 { 2275 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2276 2277 nfs4_fattr4_free(&resp->obj_attributes); 2278 } 2279 2280 /* ARGSUSED */ 2281 static void 2282 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2283 struct compound_state *cs) 2284 { 2285 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2286 2287 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2288 2289 if (cs->vp == NULL) { 2290 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2291 goto out; 2292 } 2293 if (cs->access == CS_ACCESS_DENIED) { 2294 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2295 goto out; 2296 } 2297 2298 resp->object.nfs_fh4_val = 2299 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2300 nfs_fh4_copy(&cs->fh, &resp->object); 2301 *cs->statusp = resp->status = NFS4_OK; 2302 out: 2303 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2304 GETFH4res *, resp); 2305 } 2306 2307 static void 2308 rfs4_op_getfh_free(nfs_resop4 *resop) 2309 { 2310 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2311 2312 if (resp->status == NFS4_OK && 2313 resp->object.nfs_fh4_val != NULL) { 2314 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2315 resp->object.nfs_fh4_val = NULL; 2316 resp->object.nfs_fh4_len = 0; 2317 } 2318 } 2319 2320 /* 2321 * illegal: args: void 2322 * res : status (NFS4ERR_OP_ILLEGAL) 2323 */ 2324 /* ARGSUSED */ 2325 static void 2326 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2327 struct svc_req *req, struct compound_state *cs) 2328 { 2329 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2330 2331 resop->resop = OP_ILLEGAL; 2332 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2333 } 2334 2335 /* 2336 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2337 * res: status. If success - CURRENT_FH unchanged, return change_info 2338 */ 2339 /* ARGSUSED */ 2340 static void 2341 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2342 struct compound_state *cs) 2343 { 2344 LINK4args *args = &argop->nfs_argop4_u.oplink; 2345 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2346 int error; 2347 vnode_t *vp; 2348 vnode_t *dvp; 2349 struct vattr bdva, idva, adva; 2350 char *nm; 2351 uint_t len; 2352 2353 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2354 LINK4args *, args); 2355 2356 /* SAVED_FH: source object */ 2357 vp = cs->saved_vp; 2358 if (vp == NULL) { 2359 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2360 goto out; 2361 } 2362 2363 /* CURRENT_FH: target directory */ 2364 dvp = cs->vp; 2365 if (dvp == NULL) { 2366 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2367 goto out; 2368 } 2369 2370 /* 2371 * If there is a non-shared filesystem mounted on this vnode, 2372 * do not allow to link any file in this directory. 2373 */ 2374 if (vn_ismntpt(dvp)) { 2375 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2376 goto out; 2377 } 2378 2379 if (cs->access == CS_ACCESS_DENIED) { 2380 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2381 goto out; 2382 } 2383 2384 /* Check source object's type validity */ 2385 if (vp->v_type == VDIR) { 2386 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2387 goto out; 2388 } 2389 2390 /* Check target directory's type */ 2391 if (dvp->v_type != VDIR) { 2392 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2393 goto out; 2394 } 2395 2396 if (cs->saved_exi != cs->exi) { 2397 *cs->statusp = resp->status = NFS4ERR_XDEV; 2398 goto out; 2399 } 2400 2401 if (!utf8_dir_verify(&args->newname)) { 2402 *cs->statusp = resp->status = NFS4ERR_INVAL; 2403 goto out; 2404 } 2405 2406 nm = utf8_to_fn(&args->newname, &len, NULL); 2407 if (nm == NULL) { 2408 *cs->statusp = resp->status = NFS4ERR_INVAL; 2409 goto out; 2410 } 2411 2412 if (len > MAXNAMELEN) { 2413 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2414 kmem_free(nm, len); 2415 goto out; 2416 } 2417 2418 if (rdonly4(cs->exi, cs->vp, req)) { 2419 *cs->statusp = resp->status = NFS4ERR_ROFS; 2420 kmem_free(nm, len); 2421 goto out; 2422 } 2423 2424 /* Get "before" change value */ 2425 bdva.va_mask = AT_CTIME|AT_SEQ; 2426 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2427 if (error) { 2428 *cs->statusp = resp->status = puterrno4(error); 2429 kmem_free(nm, len); 2430 goto out; 2431 } 2432 2433 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2434 2435 error = VOP_LINK(dvp, vp, nm, cs->cr, NULL, 0); 2436 2437 kmem_free(nm, len); 2438 2439 /* 2440 * Get the initial "after" sequence number, if it fails, set to zero 2441 */ 2442 idva.va_mask = AT_SEQ; 2443 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2444 idva.va_seq = 0; 2445 2446 /* 2447 * Force modified data and metadata out to stable storage. 2448 */ 2449 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2450 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2451 2452 if (error) { 2453 *cs->statusp = resp->status = puterrno4(error); 2454 goto out; 2455 } 2456 2457 /* 2458 * Get "after" change value, if it fails, simply return the 2459 * before value. 2460 */ 2461 adva.va_mask = AT_CTIME|AT_SEQ; 2462 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2463 adva.va_ctime = bdva.va_ctime; 2464 adva.va_seq = 0; 2465 } 2466 2467 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2468 2469 /* 2470 * The cinfo.atomic = TRUE only if we have 2471 * non-zero va_seq's, and it has incremented by exactly one 2472 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2473 */ 2474 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2475 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2476 resp->cinfo.atomic = TRUE; 2477 else 2478 resp->cinfo.atomic = FALSE; 2479 2480 *cs->statusp = resp->status = NFS4_OK; 2481 out: 2482 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2483 LINK4res *, resp); 2484 } 2485 2486 /* 2487 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2488 */ 2489 2490 /* ARGSUSED */ 2491 static nfsstat4 2492 do_rfs4_op_lookup(char *nm, uint_t buflen, struct svc_req *req, 2493 struct compound_state *cs) 2494 { 2495 int error; 2496 int different_export = 0; 2497 vnode_t *vp, *tvp, *pre_tvp = NULL, *oldvp = NULL; 2498 struct exportinfo *exi = NULL, *pre_exi = NULL; 2499 nfsstat4 stat; 2500 fid_t fid; 2501 int attrdir, dotdot, walk; 2502 bool_t is_newvp = FALSE; 2503 2504 if (cs->vp->v_flag & V_XATTRDIR) { 2505 attrdir = 1; 2506 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2507 } else { 2508 attrdir = 0; 2509 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2510 } 2511 2512 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2513 2514 /* 2515 * If dotdotting, then need to check whether it's 2516 * above the root of a filesystem, or above an 2517 * export point. 2518 */ 2519 if (dotdot) { 2520 2521 /* 2522 * If dotdotting at the root of a filesystem, then 2523 * need to traverse back to the mounted-on filesystem 2524 * and do the dotdot lookup there. 2525 */ 2526 if (cs->vp->v_flag & VROOT) { 2527 2528 /* 2529 * If at the system root, then can 2530 * go up no further. 2531 */ 2532 if (VN_CMP(cs->vp, rootdir)) 2533 return (puterrno4(ENOENT)); 2534 2535 /* 2536 * Traverse back to the mounted-on filesystem 2537 */ 2538 cs->vp = untraverse(cs->vp); 2539 2540 /* 2541 * Set the different_export flag so we remember 2542 * to pick up a new exportinfo entry for 2543 * this new filesystem. 2544 */ 2545 different_export = 1; 2546 } else { 2547 2548 /* 2549 * If dotdotting above an export point then set 2550 * the different_export to get new export info. 2551 */ 2552 different_export = nfs_exported(cs->exi, cs->vp); 2553 } 2554 } 2555 2556 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2557 NULL, NULL, NULL); 2558 if (error) 2559 return (puterrno4(error)); 2560 2561 /* 2562 * If the vnode is in a pseudo filesystem, check whether it is visible. 2563 * 2564 * XXX if the vnode is a symlink and it is not visible in 2565 * a pseudo filesystem, return ENOENT (not following symlink). 2566 * V4 client can not mount such symlink. This is a regression 2567 * from V2/V3. 2568 * 2569 * In the same exported filesystem, if the security flavor used 2570 * is not an explicitly shared flavor, limit the view to the visible 2571 * list entries only. This is not a WRONGSEC case because it's already 2572 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2573 */ 2574 if (!different_export && 2575 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2576 cs->access & CS_ACCESS_LIMITED)) { 2577 if (! nfs_visible(cs->exi, vp, &different_export)) { 2578 VN_RELE(vp); 2579 return (puterrno4(ENOENT)); 2580 } 2581 } 2582 2583 /* 2584 * If it's a mountpoint, then traverse it. 2585 */ 2586 if (vn_ismntpt(vp)) { 2587 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2588 pre_tvp = vp; /* save pre-traversed vnode */ 2589 2590 /* 2591 * hold pre_tvp to counteract rele by traverse. We will 2592 * need pre_tvp below if checkexport4 fails 2593 */ 2594 VN_HOLD(pre_tvp); 2595 tvp = vp; 2596 if ((error = traverse(&tvp)) != 0) { 2597 VN_RELE(vp); 2598 VN_RELE(pre_tvp); 2599 return (puterrno4(error)); 2600 } 2601 vp = tvp; 2602 different_export = 1; 2603 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2604 /* 2605 * The vfsp comparison is to handle the case where 2606 * a LOFS mount is shared. lo_lookup traverses mount points, 2607 * and NFS is unaware of local fs transistions because 2608 * v_vfsmountedhere isn't set. For this special LOFS case, 2609 * the dir and the obj returned by lookup will have different 2610 * vfs ptrs. 2611 */ 2612 different_export = 1; 2613 } 2614 2615 if (different_export) { 2616 2617 bzero(&fid, sizeof (fid)); 2618 fid.fid_len = MAXFIDSZ; 2619 error = vop_fid_pseudo(vp, &fid); 2620 if (error) { 2621 VN_RELE(vp); 2622 if (pre_tvp) 2623 VN_RELE(pre_tvp); 2624 return (puterrno4(error)); 2625 } 2626 2627 if (dotdot) 2628 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2629 else 2630 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2631 2632 if (exi == NULL) { 2633 if (pre_tvp) { 2634 /* 2635 * If this vnode is a mounted-on vnode, 2636 * but the mounted-on file system is not 2637 * exported, send back the filehandle for 2638 * the mounted-on vnode, not the root of 2639 * the mounted-on file system. 2640 */ 2641 VN_RELE(vp); 2642 vp = pre_tvp; 2643 exi = pre_exi; 2644 } else { 2645 VN_RELE(vp); 2646 return (puterrno4(EACCES)); 2647 } 2648 } else if (pre_tvp) { 2649 /* we're done with pre_tvp now. release extra hold */ 2650 VN_RELE(pre_tvp); 2651 } 2652 2653 cs->exi = exi; 2654 2655 /* 2656 * Now we do a checkauth4. The reason is that 2657 * this client/user may not have access to the new 2658 * exported file system, and if he does, 2659 * the client/user may be mapped to a different uid. 2660 * 2661 * We start with a new cr, because the checkauth4 done 2662 * in the PUT*FH operation over wrote the cred's uid, 2663 * gid, etc, and we want the real thing before calling 2664 * checkauth4() 2665 */ 2666 crfree(cs->cr); 2667 cs->cr = crdup(cs->basecr); 2668 2669 if (cs->vp) 2670 oldvp = cs->vp; 2671 cs->vp = vp; 2672 is_newvp = TRUE; 2673 2674 stat = call_checkauth4(cs, req); 2675 if (stat != NFS4_OK) { 2676 VN_RELE(cs->vp); 2677 cs->vp = oldvp; 2678 return (stat); 2679 } 2680 } 2681 2682 /* 2683 * After various NFS checks, do a label check on the path 2684 * component. The label on this path should either be the 2685 * global zone's label or a zone's label. We are only 2686 * interested in the zone's label because exported files 2687 * in global zone is accessible (though read-only) to 2688 * clients. The exportability/visibility check is already 2689 * done before reaching this code. 2690 */ 2691 if (is_system_labeled()) { 2692 bslabel_t *clabel; 2693 2694 ASSERT(req->rq_label != NULL); 2695 clabel = req->rq_label; 2696 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2697 "got client label from request(1)", struct svc_req *, req); 2698 2699 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2700 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 2701 error = EACCES; 2702 goto err_out; 2703 } 2704 } else { 2705 /* 2706 * We grant access to admin_low label clients 2707 * only if the client is trusted, i.e. also 2708 * running Solaris Trusted Extension. 2709 */ 2710 struct sockaddr *ca; 2711 int addr_type; 2712 void *ipaddr; 2713 tsol_tpc_t *tp; 2714 2715 ca = (struct sockaddr *)svc_getrpccaller( 2716 req->rq_xprt)->buf; 2717 if (ca->sa_family == AF_INET) { 2718 addr_type = IPV4_VERSION; 2719 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2720 } else if (ca->sa_family == AF_INET6) { 2721 addr_type = IPV6_VERSION; 2722 ipaddr = &((struct sockaddr_in6 *) 2723 ca)->sin6_addr; 2724 } 2725 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2726 if (tp == NULL || tp->tpc_tp.tp_doi != 2727 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2728 SUN_CIPSO) { 2729 if (tp != NULL) 2730 TPC_RELE(tp); 2731 error = EACCES; 2732 goto err_out; 2733 } 2734 TPC_RELE(tp); 2735 } 2736 } 2737 2738 error = makefh4(&cs->fh, vp, cs->exi); 2739 2740 err_out: 2741 if (error) { 2742 if (is_newvp) { 2743 VN_RELE(cs->vp); 2744 cs->vp = oldvp; 2745 } else 2746 VN_RELE(vp); 2747 return (puterrno4(error)); 2748 } 2749 2750 if (!is_newvp) { 2751 if (cs->vp) 2752 VN_RELE(cs->vp); 2753 cs->vp = vp; 2754 } else if (oldvp) 2755 VN_RELE(oldvp); 2756 2757 /* 2758 * if did lookup on attrdir and didn't lookup .., set named 2759 * attr fh flag 2760 */ 2761 if (attrdir && ! dotdot) 2762 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2763 2764 /* Assume false for now, open proc will set this */ 2765 cs->mandlock = FALSE; 2766 2767 return (NFS4_OK); 2768 } 2769 2770 /* ARGSUSED */ 2771 static void 2772 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2773 struct compound_state *cs) 2774 { 2775 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2776 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2777 char *nm; 2778 uint_t len; 2779 2780 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2781 LOOKUP4args *, args); 2782 2783 if (cs->vp == NULL) { 2784 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2785 goto out; 2786 } 2787 2788 if (cs->vp->v_type == VLNK) { 2789 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2790 goto out; 2791 } 2792 2793 if (cs->vp->v_type != VDIR) { 2794 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2795 goto out; 2796 } 2797 2798 if (!utf8_dir_verify(&args->objname)) { 2799 *cs->statusp = resp->status = NFS4ERR_INVAL; 2800 goto out; 2801 } 2802 2803 nm = utf8_to_str(&args->objname, &len, NULL); 2804 if (nm == NULL) { 2805 *cs->statusp = resp->status = NFS4ERR_INVAL; 2806 goto out; 2807 } 2808 2809 if (len > MAXNAMELEN) { 2810 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2811 kmem_free(nm, len); 2812 goto out; 2813 } 2814 2815 *cs->statusp = resp->status = do_rfs4_op_lookup(nm, len, req, cs); 2816 2817 kmem_free(nm, len); 2818 2819 out: 2820 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2821 LOOKUP4res *, resp); 2822 } 2823 2824 /* ARGSUSED */ 2825 static void 2826 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2827 struct compound_state *cs) 2828 { 2829 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2830 2831 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2832 2833 if (cs->vp == NULL) { 2834 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2835 goto out; 2836 } 2837 2838 if (cs->vp->v_type != VDIR) { 2839 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2840 goto out; 2841 } 2842 2843 *cs->statusp = resp->status = do_rfs4_op_lookup("..", 3, req, cs); 2844 2845 /* 2846 * From NFSV4 Specification, LOOKUPP should not check for 2847 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2848 */ 2849 if (resp->status == NFS4ERR_WRONGSEC) { 2850 *cs->statusp = resp->status = NFS4_OK; 2851 } 2852 2853 out: 2854 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2855 LOOKUPP4res *, resp); 2856 } 2857 2858 2859 /*ARGSUSED2*/ 2860 static void 2861 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2862 struct compound_state *cs) 2863 { 2864 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2865 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2866 vnode_t *avp = NULL; 2867 int lookup_flags = LOOKUP_XATTR, error; 2868 int exp_ro = 0; 2869 2870 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 2871 OPENATTR4args *, args); 2872 2873 if (cs->vp == NULL) { 2874 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2875 goto out; 2876 } 2877 2878 /* 2879 * Make a couple of checks made by copen() 2880 * 2881 * Check to make sure underlying fs supports xattrs. This 2882 * is required because solaris filesystem implementations 2883 * (UFS/TMPFS) don't enforce the noxattr mount option 2884 * in VOP_LOOKUP(LOOKUP_XATTR). If fs doesn't support this 2885 * pathconf cmd or if fs supports cmd but doesn't claim 2886 * support for xattr, return NOTSUPP. It would be better 2887 * to use VOP_PATHCONF( _PC_XATTR_ENABLED) for this; however, 2888 * that cmd is not available to VOP_PATHCONF interface 2889 * (it's only implemented inside pathconf syscall)... 2890 * 2891 * Verify permission to put attributes on files (access 2892 * checks from copen). 2893 */ 2894 2895 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 2896 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_XVATTR)) { 2897 *cs->statusp = resp->status = puterrno4(ENOTSUP); 2898 goto out; 2899 } 2900 2901 if ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 2902 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 2903 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)) { 2904 *cs->statusp = resp->status = puterrno4(EACCES); 2905 goto out; 2906 } 2907 2908 /* 2909 * The CREATE_XATTR_DIR VOP flag cannot be specified if 2910 * the file system is exported read-only -- regardless of 2911 * createdir flag. Otherwise the attrdir would be created 2912 * (assuming server fs isn't mounted readonly locally). If 2913 * VOP_LOOKUP returns ENOENT in this case, the error will 2914 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 2915 * because specfs has no VOP_LOOKUP op, so the macro would 2916 * return ENOSYS. EINVAL is returned by all (current) 2917 * Solaris file system implementations when any of their 2918 * restrictions are violated (xattr(dir) can't have xattrdir). 2919 * Returning NOTSUPP is more appropriate in this case 2920 * because the object will never be able to have an attrdir. 2921 */ 2922 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 2923 lookup_flags |= CREATE_XATTR_DIR; 2924 2925 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 2926 NULL, NULL, NULL); 2927 2928 if (error) { 2929 if (error == ENOENT && args->createdir && exp_ro) 2930 *cs->statusp = resp->status = puterrno4(EROFS); 2931 else if (error == EINVAL || error == ENOSYS) 2932 *cs->statusp = resp->status = puterrno4(ENOTSUP); 2933 else 2934 *cs->statusp = resp->status = puterrno4(error); 2935 goto out; 2936 } 2937 2938 ASSERT(avp->v_flag & V_XATTRDIR); 2939 2940 error = makefh4(&cs->fh, avp, cs->exi); 2941 2942 if (error) { 2943 VN_RELE(avp); 2944 *cs->statusp = resp->status = puterrno4(error); 2945 goto out; 2946 } 2947 2948 VN_RELE(cs->vp); 2949 cs->vp = avp; 2950 2951 /* 2952 * There is no requirement for an attrdir fh flag 2953 * because the attrdir has a vnode flag to distinguish 2954 * it from regular (non-xattr) directories. The 2955 * FH4_ATTRDIR flag is set for future sanity checks. 2956 */ 2957 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 2958 *cs->statusp = resp->status = NFS4_OK; 2959 2960 out: 2961 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 2962 OPENATTR4res *, resp); 2963 } 2964 2965 static int 2966 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 2967 caller_context_t *ct) 2968 { 2969 int error; 2970 int i; 2971 clock_t delaytime; 2972 2973 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 2974 2975 /* 2976 * Don't block on mandatory locks. If this routine returns 2977 * EAGAIN, the caller should return NFS4ERR_LOCKED. 2978 */ 2979 uio->uio_fmode = FNONBLOCK; 2980 2981 for (i = 0; i < rfs4_maxlock_tries; i++) { 2982 2983 2984 if (direction == FREAD) { 2985 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 2986 error = VOP_READ(vp, uio, ioflag, cred, ct); 2987 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 2988 } else { 2989 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 2990 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 2991 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 2992 } 2993 2994 if (error != EAGAIN) 2995 break; 2996 2997 if (i < rfs4_maxlock_tries - 1) { 2998 delay(delaytime); 2999 delaytime *= 2; 3000 } 3001 } 3002 3003 return (error); 3004 } 3005 3006 /* ARGSUSED */ 3007 static void 3008 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3009 struct compound_state *cs) 3010 { 3011 READ4args *args = &argop->nfs_argop4_u.opread; 3012 READ4res *resp = &resop->nfs_resop4_u.opread; 3013 int error; 3014 int verror; 3015 vnode_t *vp; 3016 struct vattr va; 3017 struct iovec iov; 3018 struct uio uio; 3019 u_offset_t offset; 3020 bool_t *deleg = &cs->deleg; 3021 nfsstat4 stat; 3022 int in_crit = 0; 3023 mblk_t *mp; 3024 int alloc_err = 0; 3025 caller_context_t ct; 3026 3027 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3028 READ4args, args); 3029 3030 vp = cs->vp; 3031 if (vp == NULL) { 3032 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3033 goto out; 3034 } 3035 if (cs->access == CS_ACCESS_DENIED) { 3036 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3037 goto out; 3038 } 3039 3040 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3041 deleg, TRUE, &ct)) != NFS4_OK) { 3042 *cs->statusp = resp->status = stat; 3043 goto out; 3044 } 3045 3046 /* 3047 * Enter the critical region before calling VOP_RWLOCK 3048 * to avoid a deadlock with write requests. 3049 */ 3050 if (nbl_need_check(vp)) { 3051 nbl_start_crit(vp, RW_READER); 3052 in_crit = 1; 3053 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3054 &ct)) { 3055 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3056 goto out; 3057 } 3058 } 3059 3060 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3061 deleg, TRUE, &ct)) != NFS4_OK) { 3062 *cs->statusp = resp->status = stat; 3063 goto out; 3064 } 3065 3066 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3067 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3068 3069 /* 3070 * If we can't get the attributes, then we can't do the 3071 * right access checking. So, we'll fail the request. 3072 */ 3073 if (verror) { 3074 *cs->statusp = resp->status = puterrno4(verror); 3075 goto out; 3076 } 3077 3078 if (vp->v_type != VREG) { 3079 *cs->statusp = resp->status = 3080 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3081 goto out; 3082 } 3083 3084 if (crgetuid(cs->cr) != va.va_uid && 3085 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3086 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3087 *cs->statusp = resp->status = puterrno4(error); 3088 goto out; 3089 } 3090 3091 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3092 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3093 goto out; 3094 } 3095 3096 offset = args->offset; 3097 if (offset >= va.va_size) { 3098 *cs->statusp = resp->status = NFS4_OK; 3099 resp->eof = TRUE; 3100 resp->data_len = 0; 3101 resp->data_val = NULL; 3102 resp->mblk = NULL; 3103 *cs->statusp = resp->status = NFS4_OK; 3104 goto out; 3105 } 3106 3107 if (args->count == 0) { 3108 *cs->statusp = resp->status = NFS4_OK; 3109 resp->eof = FALSE; 3110 resp->data_len = 0; 3111 resp->data_val = NULL; 3112 resp->mblk = NULL; 3113 goto out; 3114 } 3115 3116 /* 3117 * Do not allocate memory more than maximum allowed 3118 * transfer size 3119 */ 3120 if (args->count > rfs4_tsize(req)) 3121 args->count = rfs4_tsize(req); 3122 3123 /* 3124 * mp will contain the data to be sent out in the read reply. 3125 * It will be freed after the reply has been sent. 3126 * Let's roundup the data to a BYTES_PER_XDR_UNIT multiple, 3127 * so that the call to xdrmblk_putmblk() never fails. 3128 * If the first alloc of the requested size fails, then 3129 * decrease the size to something more reasonable and wait 3130 * for the allocation to occur. 3131 */ 3132 mp = allocb(RNDUP(args->count), BPRI_MED); 3133 if (mp == NULL) { 3134 if (args->count > MAXBSIZE) 3135 args->count = MAXBSIZE; 3136 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3137 STR_NOSIG, &alloc_err); 3138 } 3139 ASSERT(mp != NULL); 3140 ASSERT(alloc_err == 0); 3141 3142 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3143 iov.iov_len = args->count; 3144 uio.uio_iov = &iov; 3145 uio.uio_iovcnt = 1; 3146 uio.uio_segflg = UIO_SYSSPACE; 3147 uio.uio_extflg = UIO_COPY_CACHED; 3148 uio.uio_loffset = args->offset; 3149 uio.uio_resid = args->count; 3150 3151 error = do_io(FREAD, vp, &uio, 0, cs->cr, &ct); 3152 3153 va.va_mask = AT_SIZE; 3154 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3155 3156 if (error) { 3157 freeb(mp); 3158 *cs->statusp = resp->status = puterrno4(error); 3159 goto out; 3160 } 3161 3162 *cs->statusp = resp->status = NFS4_OK; 3163 3164 ASSERT(uio.uio_resid >= 0); 3165 resp->data_len = args->count - uio.uio_resid; 3166 resp->data_val = (char *)mp->b_datap->db_base; 3167 resp->mblk = mp; 3168 3169 if (!verror && offset + resp->data_len == va.va_size) 3170 resp->eof = TRUE; 3171 else 3172 resp->eof = FALSE; 3173 3174 out: 3175 if (in_crit) 3176 nbl_end_crit(vp); 3177 3178 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3179 READ4res *, resp); 3180 } 3181 3182 static void 3183 rfs4_op_read_free(nfs_resop4 *resop) 3184 { 3185 READ4res *resp = &resop->nfs_resop4_u.opread; 3186 3187 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3188 freeb(resp->mblk); 3189 resp->mblk = NULL; 3190 resp->data_val = NULL; 3191 resp->data_len = 0; 3192 } 3193 } 3194 3195 static void 3196 rfs4_op_readdir_free(nfs_resop4 *resop) 3197 { 3198 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3199 3200 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3201 freeb(resp->mblk); 3202 resp->mblk = NULL; 3203 resp->data_len = 0; 3204 } 3205 } 3206 3207 3208 /* ARGSUSED */ 3209 static void 3210 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3211 struct compound_state *cs) 3212 { 3213 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3214 int error; 3215 vnode_t *vp; 3216 struct exportinfo *exi, *sav_exi; 3217 nfs_fh4_fmt_t *fh_fmtp; 3218 3219 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3220 3221 if (cs->vp) { 3222 VN_RELE(cs->vp); 3223 cs->vp = NULL; 3224 } 3225 3226 if (cs->cr) 3227 crfree(cs->cr); 3228 3229 cs->cr = crdup(cs->basecr); 3230 3231 vp = exi_public->exi_vp; 3232 if (vp == NULL) { 3233 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3234 goto out; 3235 } 3236 3237 if (is_system_labeled()) { 3238 bslabel_t *clabel; 3239 3240 ASSERT(req->rq_label != NULL); 3241 clabel = req->rq_label; 3242 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3243 "got client label from request(1)", 3244 struct svc_req *, req); 3245 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3246 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 3247 *cs->statusp = resp->status = 3248 NFS4ERR_SERVERFAULT; 3249 return; 3250 } 3251 } 3252 } 3253 3254 error = makefh4(&cs->fh, vp, exi_public); 3255 if (error != 0) { 3256 *cs->statusp = resp->status = puterrno4(error); 3257 goto out; 3258 } 3259 sav_exi = cs->exi; 3260 if (exi_public == exi_root) { 3261 /* 3262 * No filesystem is actually shared public, so we default 3263 * to exi_root. In this case, we must check whether root 3264 * is exported. 3265 */ 3266 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3267 3268 /* 3269 * if root filesystem is exported, the exportinfo struct that we 3270 * should use is what checkexport4 returns, because root_exi is 3271 * actually a mostly empty struct. 3272 */ 3273 exi = checkexport4(&fh_fmtp->fh4_fsid, 3274 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3275 cs->exi = ((exi != NULL) ? exi : exi_public); 3276 } else { 3277 /* 3278 * it's a properly shared filesystem 3279 */ 3280 cs->exi = exi_public; 3281 } 3282 3283 VN_HOLD(vp); 3284 cs->vp = vp; 3285 3286 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3287 VN_RELE(cs->vp); 3288 cs->vp = NULL; 3289 cs->exi = sav_exi; 3290 goto out; 3291 } 3292 3293 *cs->statusp = resp->status = NFS4_OK; 3294 out: 3295 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3296 PUTPUBFH4res *, resp); 3297 } 3298 3299 /* 3300 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3301 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3302 * or joe have restrictive search permissions, then we shouldn't let 3303 * the client get a file handle. This is easy to enforce. However, we 3304 * don't know what security flavor should be used until we resolve the 3305 * path name. Another complication is uid mapping. If root is 3306 * the user, then it will be mapped to the anonymous user by default, 3307 * but we won't know that till we've resolved the path name. And we won't 3308 * know what the anonymous user is. 3309 * Luckily, SECINFO is specified to take a full filename. 3310 * So what we will have to in rfs4_op_lookup is check that flavor of 3311 * the target object matches that of the request, and if root was the 3312 * caller, check for the root= and anon= options, and if necessary, 3313 * repeat the lookup using the right cred_t. But that's not done yet. 3314 */ 3315 /* ARGSUSED */ 3316 static void 3317 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3318 struct compound_state *cs) 3319 { 3320 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3321 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3322 nfs_fh4_fmt_t *fh_fmtp; 3323 3324 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3325 PUTFH4args *, args); 3326 3327 if (cs->vp) { 3328 VN_RELE(cs->vp); 3329 cs->vp = NULL; 3330 } 3331 3332 if (cs->cr) { 3333 crfree(cs->cr); 3334 cs->cr = NULL; 3335 } 3336 3337 3338 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3339 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3340 goto out; 3341 } 3342 3343 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3344 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3345 NULL); 3346 3347 if (cs->exi == NULL) { 3348 *cs->statusp = resp->status = NFS4ERR_STALE; 3349 goto out; 3350 } 3351 3352 cs->cr = crdup(cs->basecr); 3353 3354 ASSERT(cs->cr != NULL); 3355 3356 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3357 *cs->statusp = resp->status; 3358 goto out; 3359 } 3360 3361 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3362 VN_RELE(cs->vp); 3363 cs->vp = NULL; 3364 goto out; 3365 } 3366 3367 nfs_fh4_copy(&args->object, &cs->fh); 3368 *cs->statusp = resp->status = NFS4_OK; 3369 cs->deleg = FALSE; 3370 3371 out: 3372 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3373 PUTFH4res *, resp); 3374 } 3375 3376 /* ARGSUSED */ 3377 static void 3378 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3379 struct compound_state *cs) 3380 3381 { 3382 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3383 int error; 3384 fid_t fid; 3385 struct exportinfo *exi, *sav_exi; 3386 3387 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3388 3389 if (cs->vp) { 3390 VN_RELE(cs->vp); 3391 cs->vp = NULL; 3392 } 3393 3394 if (cs->cr) 3395 crfree(cs->cr); 3396 3397 cs->cr = crdup(cs->basecr); 3398 3399 /* 3400 * Using rootdir, the system root vnode, 3401 * get its fid. 3402 */ 3403 bzero(&fid, sizeof (fid)); 3404 fid.fid_len = MAXFIDSZ; 3405 error = vop_fid_pseudo(rootdir, &fid); 3406 if (error != 0) { 3407 *cs->statusp = resp->status = puterrno4(error); 3408 goto out; 3409 } 3410 3411 /* 3412 * Then use the root fsid & fid it to find out if it's exported 3413 * 3414 * If the server root isn't exported directly, then 3415 * it should at least be a pseudo export based on 3416 * one or more exports further down in the server's 3417 * file tree. 3418 */ 3419 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3420 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3421 NFS4_DEBUG(rfs4_debug, 3422 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3423 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3424 goto out; 3425 } 3426 3427 /* 3428 * Now make a filehandle based on the root 3429 * export and root vnode. 3430 */ 3431 error = makefh4(&cs->fh, rootdir, exi); 3432 if (error != 0) { 3433 *cs->statusp = resp->status = puterrno4(error); 3434 goto out; 3435 } 3436 3437 sav_exi = cs->exi; 3438 cs->exi = exi; 3439 3440 VN_HOLD(rootdir); 3441 cs->vp = rootdir; 3442 3443 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3444 VN_RELE(rootdir); 3445 cs->vp = NULL; 3446 cs->exi = sav_exi; 3447 goto out; 3448 } 3449 3450 *cs->statusp = resp->status = NFS4_OK; 3451 cs->deleg = FALSE; 3452 out: 3453 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3454 PUTROOTFH4res *, resp); 3455 } 3456 3457 /* 3458 * A directory entry is a valid nfsv4 entry if 3459 * - it has a non-zero ino 3460 * - it is not a dot or dotdot name 3461 * - it is visible in a pseudo export or in a real export that can 3462 * only have a limited view. 3463 */ 3464 static bool_t 3465 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3466 int *expseudo, int check_visible) 3467 { 3468 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3469 *expseudo = 0; 3470 return (FALSE); 3471 } 3472 3473 if (! check_visible) { 3474 *expseudo = 0; 3475 return (TRUE); 3476 } 3477 3478 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 3479 } 3480 3481 /* 3482 * set_rdattr_params sets up the variables used to manage what information 3483 * to get for each directory entry. 3484 */ 3485 static nfsstat4 3486 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3487 bitmap4 attrs, bool_t *need_to_lookup) 3488 { 3489 uint_t va_mask; 3490 nfsstat4 status; 3491 bitmap4 objbits; 3492 3493 status = bitmap4_to_attrmask(attrs, sargp); 3494 if (status != NFS4_OK) { 3495 /* 3496 * could not even figure attr mask 3497 */ 3498 return (status); 3499 } 3500 va_mask = sargp->vap->va_mask; 3501 3502 /* 3503 * dirent's d_ino is always correct value for mounted_on_fileid. 3504 * mntdfid_set is set once here, but mounted_on_fileid is 3505 * set in main dirent processing loop for each dirent. 3506 * The mntdfid_set is a simple optimization that lets the 3507 * server attr code avoid work when caller is readdir. 3508 */ 3509 sargp->mntdfid_set = TRUE; 3510 3511 /* 3512 * Lookup entry only if client asked for any of the following: 3513 * a) vattr attrs 3514 * b) vfs attrs 3515 * c) attrs w/per-object scope requested (change, filehandle, etc) 3516 * other than mounted_on_fileid (which we can take from dirent) 3517 */ 3518 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3519 3520 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3521 *need_to_lookup = TRUE; 3522 else 3523 *need_to_lookup = FALSE; 3524 3525 if (sargp->sbp == NULL) 3526 return (NFS4_OK); 3527 3528 /* 3529 * If filesystem attrs are requested, get them now from the 3530 * directory vp, as most entries will have same filesystem. The only 3531 * exception are mounted over entries but we handle 3532 * those as we go (XXX mounted over detection not yet implemented). 3533 */ 3534 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3535 status = bitmap4_get_sysattrs(sargp); 3536 sargp->vap->va_mask = va_mask; 3537 3538 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3539 /* 3540 * Failed to get filesystem attributes. 3541 * Return a rdattr_error for each entry, but don't fail. 3542 * However, don't get any obj-dependent attrs. 3543 */ 3544 sargp->rdattr_error = status; /* for rdattr_error */ 3545 *need_to_lookup = FALSE; 3546 /* 3547 * At least get fileid for regular readdir output 3548 */ 3549 sargp->vap->va_mask &= AT_NODEID; 3550 status = NFS4_OK; 3551 } 3552 3553 return (status); 3554 } 3555 3556 /* 3557 * readlink: args: CURRENT_FH. 3558 * res: status. If success - CURRENT_FH unchanged, return linktext. 3559 */ 3560 3561 /* ARGSUSED */ 3562 static void 3563 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3564 struct compound_state *cs) 3565 { 3566 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3567 int error; 3568 vnode_t *vp; 3569 struct iovec iov; 3570 struct vattr va; 3571 struct uio uio; 3572 char *data; 3573 3574 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3575 3576 /* CURRENT_FH: directory */ 3577 vp = cs->vp; 3578 if (vp == NULL) { 3579 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3580 goto out; 3581 } 3582 3583 if (cs->access == CS_ACCESS_DENIED) { 3584 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3585 goto out; 3586 } 3587 3588 if (vp->v_type == VDIR) { 3589 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3590 goto out; 3591 } 3592 3593 if (vp->v_type != VLNK) { 3594 *cs->statusp = resp->status = NFS4ERR_INVAL; 3595 goto out; 3596 } 3597 3598 va.va_mask = AT_MODE; 3599 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3600 if (error) { 3601 *cs->statusp = resp->status = puterrno4(error); 3602 goto out; 3603 } 3604 3605 if (MANDLOCK(vp, va.va_mode)) { 3606 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3607 goto out; 3608 } 3609 3610 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3611 3612 iov.iov_base = data; 3613 iov.iov_len = MAXPATHLEN; 3614 uio.uio_iov = &iov; 3615 uio.uio_iovcnt = 1; 3616 uio.uio_segflg = UIO_SYSSPACE; 3617 uio.uio_extflg = UIO_COPY_CACHED; 3618 uio.uio_loffset = 0; 3619 uio.uio_resid = MAXPATHLEN; 3620 3621 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3622 3623 if (error) { 3624 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3625 *cs->statusp = resp->status = puterrno4(error); 3626 goto out; 3627 } 3628 3629 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3630 3631 /* 3632 * treat link name as data 3633 */ 3634 (void) str_to_utf8(data, &resp->link); 3635 3636 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3637 *cs->statusp = resp->status = NFS4_OK; 3638 3639 out: 3640 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3641 READLINK4res *, resp); 3642 } 3643 3644 static void 3645 rfs4_op_readlink_free(nfs_resop4 *resop) 3646 { 3647 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3648 utf8string *symlink = &resp->link; 3649 3650 if (symlink->utf8string_val) { 3651 UTF8STRING_FREE(*symlink) 3652 } 3653 } 3654 3655 /* 3656 * release_lockowner: 3657 * Release any state associated with the supplied 3658 * lockowner. Note if any lo_state is holding locks we will not 3659 * rele that lo_state and thus the lockowner will not be destroyed. 3660 * A client using lock after the lock owner stateid has been released 3661 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3662 * to reissue the lock with new_lock_owner set to TRUE. 3663 * args: lock_owner 3664 * res: status 3665 */ 3666 /* ARGSUSED */ 3667 static void 3668 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3669 struct svc_req *req, struct compound_state *cs) 3670 { 3671 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3672 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3673 rfs4_lockowner_t *lo; 3674 rfs4_openowner_t *oop; 3675 rfs4_state_t *sp; 3676 rfs4_lo_state_t *lsp; 3677 rfs4_client_t *cp; 3678 bool_t create = FALSE; 3679 locklist_t *llist; 3680 sysid_t sysid; 3681 3682 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3683 cs, RELEASE_LOCKOWNER4args *, ap); 3684 3685 /* Make sure there is a clientid around for this request */ 3686 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3687 3688 if (cp == NULL) { 3689 *cs->statusp = resp->status = 3690 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3691 goto out; 3692 } 3693 rfs4_client_rele(cp); 3694 3695 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3696 if (lo == NULL) { 3697 *cs->statusp = resp->status = NFS4_OK; 3698 goto out; 3699 } 3700 ASSERT(lo->client != NULL); 3701 3702 /* 3703 * Check for EXPIRED client. If so will reap state with in a lease 3704 * period or on next set_clientid_confirm step 3705 */ 3706 if (rfs4_lease_expired(lo->client)) { 3707 rfs4_lockowner_rele(lo); 3708 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3709 goto out; 3710 } 3711 3712 /* 3713 * If no sysid has been assigned, then no locks exist; just return. 3714 */ 3715 rfs4_dbe_lock(lo->client->dbe); 3716 if (lo->client->sysidt == LM_NOSYSID) { 3717 rfs4_lockowner_rele(lo); 3718 rfs4_dbe_unlock(lo->client->dbe); 3719 goto out; 3720 } 3721 3722 sysid = lo->client->sysidt; 3723 rfs4_dbe_unlock(lo->client->dbe); 3724 3725 /* 3726 * Mark the lockowner invalid. 3727 */ 3728 rfs4_dbe_hide(lo->dbe); 3729 3730 /* 3731 * sysid-pid pair should now not be used since the lockowner is 3732 * invalid. If the client were to instantiate the lockowner again 3733 * it would be assigned a new pid. Thus we can get the list of 3734 * current locks. 3735 */ 3736 3737 llist = flk_get_active_locks(sysid, lo->pid); 3738 /* If we are still holding locks fail */ 3739 if (llist != NULL) { 3740 3741 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3742 3743 flk_free_locklist(llist); 3744 /* 3745 * We need to unhide the lockowner so the client can 3746 * try it again. The bad thing here is if the client 3747 * has a logic error that took it here in the first place 3748 * he probably has lost accounting of the locks that it 3749 * is holding. So we may have dangling state until the 3750 * open owner state is reaped via close. One scenario 3751 * that could possibly occur is that the client has 3752 * sent the unlock request(s) in separate threads 3753 * and has not waited for the replies before sending the 3754 * RELEASE_LOCKOWNER request. Presumably, it would expect 3755 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3756 * reissuing the request. 3757 */ 3758 rfs4_dbe_unhide(lo->dbe); 3759 rfs4_lockowner_rele(lo); 3760 goto out; 3761 } 3762 3763 /* 3764 * For the corresponding client we need to check each open 3765 * owner for any opens that have lockowner state associated 3766 * with this lockowner. 3767 */ 3768 3769 rfs4_dbe_lock(lo->client->dbe); 3770 for (oop = lo->client->openownerlist.next->oop; oop != NULL; 3771 oop = oop->openownerlist.next->oop) { 3772 3773 rfs4_dbe_lock(oop->dbe); 3774 for (sp = oop->ownerstateids.next->sp; sp != NULL; 3775 sp = sp->ownerstateids.next->sp) { 3776 3777 rfs4_dbe_lock(sp->dbe); 3778 for (lsp = sp->lockownerlist.next->lsp; 3779 lsp != NULL; lsp = lsp->lockownerlist.next->lsp) { 3780 if (lsp->locker == lo) { 3781 rfs4_dbe_lock(lsp->dbe); 3782 rfs4_dbe_invalidate(lsp->dbe); 3783 rfs4_dbe_unlock(lsp->dbe); 3784 } 3785 } 3786 rfs4_dbe_unlock(sp->dbe); 3787 } 3788 rfs4_dbe_unlock(oop->dbe); 3789 } 3790 rfs4_dbe_unlock(lo->client->dbe); 3791 3792 rfs4_lockowner_rele(lo); 3793 3794 *cs->statusp = resp->status = NFS4_OK; 3795 3796 out: 3797 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 3798 cs, RELEASE_LOCKOWNER4res *, resp); 3799 } 3800 3801 /* 3802 * short utility function to lookup a file and recall the delegation 3803 */ 3804 static rfs4_file_t * 3805 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 3806 int *lkup_error, cred_t *cr) 3807 { 3808 vnode_t *vp; 3809 rfs4_file_t *fp = NULL; 3810 bool_t fcreate = FALSE; 3811 int error; 3812 3813 if (vpp) 3814 *vpp = NULL; 3815 3816 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 3817 NULL)) == 0) { 3818 if (vp->v_type == VREG) 3819 fp = rfs4_findfile(vp, NULL, &fcreate); 3820 if (vpp) 3821 *vpp = vp; 3822 else 3823 VN_RELE(vp); 3824 } 3825 3826 if (lkup_error) 3827 *lkup_error = error; 3828 3829 return (fp); 3830 } 3831 3832 /* 3833 * remove: args: CURRENT_FH: directory; name. 3834 * res: status. If success - CURRENT_FH unchanged, return change_info 3835 * for directory. 3836 */ 3837 /* ARGSUSED */ 3838 static void 3839 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3840 struct compound_state *cs) 3841 { 3842 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 3843 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 3844 int error; 3845 vnode_t *dvp, *vp; 3846 struct vattr bdva, idva, adva; 3847 char *nm; 3848 uint_t len; 3849 rfs4_file_t *fp; 3850 int in_crit = 0; 3851 bslabel_t *clabel; 3852 3853 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 3854 REMOVE4args *, args); 3855 3856 /* CURRENT_FH: directory */ 3857 dvp = cs->vp; 3858 if (dvp == NULL) { 3859 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3860 goto out; 3861 } 3862 3863 if (cs->access == CS_ACCESS_DENIED) { 3864 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3865 goto out; 3866 } 3867 3868 /* 3869 * If there is an unshared filesystem mounted on this vnode, 3870 * Do not allow to remove anything in this directory. 3871 */ 3872 if (vn_ismntpt(dvp)) { 3873 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3874 goto out; 3875 } 3876 3877 if (dvp->v_type != VDIR) { 3878 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3879 goto out; 3880 } 3881 3882 if (!utf8_dir_verify(&args->target)) { 3883 *cs->statusp = resp->status = NFS4ERR_INVAL; 3884 goto out; 3885 } 3886 3887 /* 3888 * Lookup the file so that we can check if it's a directory 3889 */ 3890 nm = utf8_to_fn(&args->target, &len, NULL); 3891 if (nm == NULL) { 3892 *cs->statusp = resp->status = NFS4ERR_INVAL; 3893 goto out; 3894 } 3895 3896 if (len > MAXNAMELEN) { 3897 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 3898 kmem_free(nm, len); 3899 goto out; 3900 } 3901 3902 if (rdonly4(cs->exi, cs->vp, req)) { 3903 *cs->statusp = resp->status = NFS4ERR_ROFS; 3904 kmem_free(nm, len); 3905 goto out; 3906 } 3907 3908 /* 3909 * Lookup the file to determine type and while we are see if 3910 * there is a file struct around and check for delegation. 3911 * We don't need to acquire va_seq before this lookup, if 3912 * it causes an update, cinfo.before will not match, which will 3913 * trigger a cache flush even if atomic is TRUE. 3914 */ 3915 if (fp = rfs4_lookup_and_findfile(dvp, nm, &vp, &error, cs->cr)) { 3916 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 3917 NULL)) { 3918 VN_RELE(vp); 3919 rfs4_file_rele(fp); 3920 *cs->statusp = resp->status = NFS4ERR_DELAY; 3921 kmem_free(nm, len); 3922 goto out; 3923 } 3924 } 3925 3926 /* Didn't find anything to remove */ 3927 if (vp == NULL) { 3928 *cs->statusp = resp->status = error; 3929 kmem_free(nm, len); 3930 goto out; 3931 } 3932 3933 if (nbl_need_check(vp)) { 3934 nbl_start_crit(vp, RW_READER); 3935 in_crit = 1; 3936 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 3937 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 3938 kmem_free(nm, len); 3939 nbl_end_crit(vp); 3940 VN_RELE(vp); 3941 if (fp) { 3942 rfs4_clear_dont_grant(fp); 3943 rfs4_file_rele(fp); 3944 } 3945 goto out; 3946 } 3947 } 3948 3949 /* check label before allowing removal */ 3950 if (is_system_labeled()) { 3951 ASSERT(req->rq_label != NULL); 3952 clabel = req->rq_label; 3953 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 3954 "got client label from request(1)", 3955 struct svc_req *, req); 3956 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3957 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK)) { 3958 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3959 kmem_free(nm, len); 3960 if (in_crit) 3961 nbl_end_crit(vp); 3962 VN_RELE(vp); 3963 if (fp) { 3964 rfs4_clear_dont_grant(fp); 3965 rfs4_file_rele(fp); 3966 } 3967 goto out; 3968 } 3969 } 3970 } 3971 3972 /* Get dir "before" change value */ 3973 bdva.va_mask = AT_CTIME|AT_SEQ; 3974 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 3975 if (error) { 3976 *cs->statusp = resp->status = puterrno4(error); 3977 kmem_free(nm, len); 3978 goto out; 3979 } 3980 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 3981 3982 /* Actually do the REMOVE operation */ 3983 if (vp->v_type == VDIR) { 3984 /* 3985 * Can't remove a directory that has a mounted-on filesystem. 3986 */ 3987 if (vn_ismntpt(vp)) { 3988 error = EACCES; 3989 } else { 3990 /* 3991 * System V defines rmdir to return EEXIST, 3992 * not * ENOTEMPTY, if the directory is not 3993 * empty. A System V NFS server needs to map 3994 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 3995 * transmit over the wire. 3996 */ 3997 if ((error = VOP_RMDIR(dvp, nm, rootdir, cs->cr, 3998 NULL, 0)) == EEXIST) 3999 error = ENOTEMPTY; 4000 } 4001 } else { 4002 if ((error = VOP_REMOVE(dvp, nm, cs->cr, NULL, 0)) == 0 && 4003 fp != NULL) { 4004 struct vattr va; 4005 vnode_t *tvp; 4006 4007 rfs4_dbe_lock(fp->dbe); 4008 tvp = fp->vp; 4009 if (tvp) 4010 VN_HOLD(tvp); 4011 rfs4_dbe_unlock(fp->dbe); 4012 4013 if (tvp) { 4014 /* 4015 * This is va_seq safe because we are not 4016 * manipulating dvp. 4017 */ 4018 va.va_mask = AT_NLINK; 4019 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4020 va.va_nlink == 0) { 4021 /* Remove state on file remove */ 4022 if (in_crit) { 4023 nbl_end_crit(vp); 4024 in_crit = 0; 4025 } 4026 rfs4_close_all_state(fp); 4027 } 4028 VN_RELE(tvp); 4029 } 4030 } 4031 } 4032 4033 if (in_crit) 4034 nbl_end_crit(vp); 4035 VN_RELE(vp); 4036 4037 if (fp) { 4038 rfs4_clear_dont_grant(fp); 4039 rfs4_file_rele(fp); 4040 } 4041 kmem_free(nm, len); 4042 4043 if (error) { 4044 *cs->statusp = resp->status = puterrno4(error); 4045 goto out; 4046 } 4047 4048 /* 4049 * Get the initial "after" sequence number, if it fails, set to zero 4050 */ 4051 idva.va_mask = AT_SEQ; 4052 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4053 idva.va_seq = 0; 4054 4055 /* 4056 * Force modified data and metadata out to stable storage. 4057 */ 4058 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4059 4060 /* 4061 * Get "after" change value, if it fails, simply return the 4062 * before value. 4063 */ 4064 adva.va_mask = AT_CTIME|AT_SEQ; 4065 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4066 adva.va_ctime = bdva.va_ctime; 4067 adva.va_seq = 0; 4068 } 4069 4070 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4071 4072 /* 4073 * The cinfo.atomic = TRUE only if we have 4074 * non-zero va_seq's, and it has incremented by exactly one 4075 * during the VOP_REMOVE/RMDIR and it didn't change during 4076 * the VOP_FSYNC. 4077 */ 4078 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4079 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4080 resp->cinfo.atomic = TRUE; 4081 else 4082 resp->cinfo.atomic = FALSE; 4083 4084 *cs->statusp = resp->status = NFS4_OK; 4085 4086 out: 4087 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4088 REMOVE4res *, resp); 4089 } 4090 4091 /* 4092 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4093 * oldname and newname. 4094 * res: status. If success - CURRENT_FH unchanged, return change_info 4095 * for both from and target directories. 4096 */ 4097 /* ARGSUSED */ 4098 static void 4099 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4100 struct compound_state *cs) 4101 { 4102 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4103 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4104 int error; 4105 vnode_t *odvp; 4106 vnode_t *ndvp; 4107 vnode_t *srcvp, *targvp; 4108 struct vattr obdva, oidva, oadva; 4109 struct vattr nbdva, nidva, nadva; 4110 char *onm, *nnm; 4111 uint_t olen, nlen; 4112 rfs4_file_t *fp, *sfp; 4113 int in_crit_src, in_crit_targ; 4114 int fp_rele_grant_hold, sfp_rele_grant_hold; 4115 bslabel_t *clabel; 4116 4117 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4118 RENAME4args *, args); 4119 4120 fp = sfp = NULL; 4121 srcvp = targvp = NULL; 4122 in_crit_src = in_crit_targ = 0; 4123 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4124 4125 /* CURRENT_FH: target directory */ 4126 ndvp = cs->vp; 4127 if (ndvp == NULL) { 4128 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4129 goto out; 4130 } 4131 4132 /* SAVED_FH: from directory */ 4133 odvp = cs->saved_vp; 4134 if (odvp == NULL) { 4135 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4136 goto out; 4137 } 4138 4139 if (cs->access == CS_ACCESS_DENIED) { 4140 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4141 goto out; 4142 } 4143 4144 /* 4145 * If there is an unshared filesystem mounted on this vnode, 4146 * do not allow to rename objects in this directory. 4147 */ 4148 if (vn_ismntpt(odvp)) { 4149 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4150 goto out; 4151 } 4152 4153 /* 4154 * If there is an unshared filesystem mounted on this vnode, 4155 * do not allow to rename to this directory. 4156 */ 4157 if (vn_ismntpt(ndvp)) { 4158 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4159 goto out; 4160 } 4161 4162 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4163 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4164 goto out; 4165 } 4166 4167 if (cs->saved_exi != cs->exi) { 4168 *cs->statusp = resp->status = NFS4ERR_XDEV; 4169 goto out; 4170 } 4171 4172 if (!utf8_dir_verify(&args->oldname)) { 4173 *cs->statusp = resp->status = NFS4ERR_INVAL; 4174 goto out; 4175 } 4176 4177 if (!utf8_dir_verify(&args->newname)) { 4178 *cs->statusp = resp->status = NFS4ERR_INVAL; 4179 goto out; 4180 } 4181 4182 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4183 if (onm == NULL) { 4184 *cs->statusp = resp->status = NFS4ERR_INVAL; 4185 goto out; 4186 } 4187 4188 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4189 if (nnm == NULL) { 4190 *cs->statusp = resp->status = NFS4ERR_INVAL; 4191 kmem_free(onm, olen); 4192 goto out; 4193 } 4194 4195 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4196 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4197 kmem_free(onm, olen); 4198 kmem_free(nnm, nlen); 4199 goto out; 4200 } 4201 4202 4203 if (rdonly4(cs->exi, cs->vp, req)) { 4204 *cs->statusp = resp->status = NFS4ERR_ROFS; 4205 kmem_free(onm, olen); 4206 kmem_free(nnm, nlen); 4207 goto out; 4208 } 4209 4210 /* check label of the target dir */ 4211 if (is_system_labeled()) { 4212 ASSERT(req->rq_label != NULL); 4213 clabel = req->rq_label; 4214 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4215 "got client label from request(1)", 4216 struct svc_req *, req); 4217 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4218 if (!do_rfs_label_check(clabel, ndvp, 4219 EQUALITY_CHECK)) { 4220 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4221 goto out; 4222 } 4223 } 4224 } 4225 4226 /* 4227 * Is the source a file and have a delegation? 4228 * We don't need to acquire va_seq before these lookups, if 4229 * it causes an update, cinfo.before will not match, which will 4230 * trigger a cache flush even if atomic is TRUE. 4231 */ 4232 if (sfp = rfs4_lookup_and_findfile(odvp, onm, &srcvp, &error, cs->cr)) { 4233 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4234 NULL)) { 4235 *cs->statusp = resp->status = NFS4ERR_DELAY; 4236 goto err_out; 4237 } 4238 } 4239 4240 if (srcvp == NULL) { 4241 *cs->statusp = resp->status = puterrno4(error); 4242 kmem_free(onm, olen); 4243 kmem_free(nnm, nlen); 4244 goto out; 4245 } 4246 4247 sfp_rele_grant_hold = 1; 4248 4249 /* Does the destination exist and a file and have a delegation? */ 4250 if (fp = rfs4_lookup_and_findfile(ndvp, nnm, &targvp, NULL, cs->cr)) { 4251 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4252 NULL)) { 4253 *cs->statusp = resp->status = NFS4ERR_DELAY; 4254 goto err_out; 4255 } 4256 } 4257 fp_rele_grant_hold = 1; 4258 4259 4260 /* Check for NBMAND lock on both source and target */ 4261 if (nbl_need_check(srcvp)) { 4262 nbl_start_crit(srcvp, RW_READER); 4263 in_crit_src = 1; 4264 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4265 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4266 goto err_out; 4267 } 4268 } 4269 4270 if (targvp && nbl_need_check(targvp)) { 4271 nbl_start_crit(targvp, RW_READER); 4272 in_crit_targ = 1; 4273 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4274 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4275 goto err_out; 4276 } 4277 } 4278 4279 /* Get source "before" change value */ 4280 obdva.va_mask = AT_CTIME|AT_SEQ; 4281 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4282 if (!error) { 4283 nbdva.va_mask = AT_CTIME|AT_SEQ; 4284 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4285 } 4286 if (error) { 4287 *cs->statusp = resp->status = puterrno4(error); 4288 goto err_out; 4289 } 4290 4291 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4292 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4293 4294 if ((error = VOP_RENAME(odvp, onm, ndvp, nnm, cs->cr, NULL, 0)) == 0 && 4295 fp != NULL) { 4296 struct vattr va; 4297 vnode_t *tvp; 4298 4299 rfs4_dbe_lock(fp->dbe); 4300 tvp = fp->vp; 4301 if (tvp) 4302 VN_HOLD(tvp); 4303 rfs4_dbe_unlock(fp->dbe); 4304 4305 if (tvp) { 4306 va.va_mask = AT_NLINK; 4307 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4308 va.va_nlink == 0) { 4309 /* The file is gone and so should the state */ 4310 if (in_crit_targ) { 4311 nbl_end_crit(targvp); 4312 in_crit_targ = 0; 4313 } 4314 rfs4_close_all_state(fp); 4315 } 4316 VN_RELE(tvp); 4317 } 4318 } 4319 if (error == 0) { 4320 char *tmp; 4321 4322 /* fix the path name for the renamed file */ 4323 mutex_enter(&srcvp->v_lock); 4324 tmp = srcvp->v_path; 4325 srcvp->v_path = NULL; 4326 mutex_exit(&srcvp->v_lock); 4327 vn_setpath(rootdir, ndvp, srcvp, nnm, nlen - 1); 4328 if (tmp != NULL) 4329 kmem_free(tmp, strlen(tmp) + 1); 4330 } 4331 4332 if (in_crit_src) 4333 nbl_end_crit(srcvp); 4334 if (srcvp) 4335 VN_RELE(srcvp); 4336 if (in_crit_targ) 4337 nbl_end_crit(targvp); 4338 if (targvp) 4339 VN_RELE(targvp); 4340 4341 if (sfp) { 4342 rfs4_clear_dont_grant(sfp); 4343 rfs4_file_rele(sfp); 4344 } 4345 if (fp) { 4346 rfs4_clear_dont_grant(fp); 4347 rfs4_file_rele(fp); 4348 } 4349 4350 kmem_free(onm, olen); 4351 kmem_free(nnm, nlen); 4352 4353 /* 4354 * Get the initial "after" sequence number, if it fails, set to zero 4355 */ 4356 oidva.va_mask = AT_SEQ; 4357 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4358 oidva.va_seq = 0; 4359 4360 nidva.va_mask = AT_SEQ; 4361 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4362 nidva.va_seq = 0; 4363 4364 /* 4365 * Force modified data and metadata out to stable storage. 4366 */ 4367 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4368 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4369 4370 if (error) { 4371 *cs->statusp = resp->status = puterrno4(error); 4372 goto out; 4373 } 4374 4375 /* 4376 * Get "after" change values, if it fails, simply return the 4377 * before value. 4378 */ 4379 oadva.va_mask = AT_CTIME|AT_SEQ; 4380 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4381 oadva.va_ctime = obdva.va_ctime; 4382 oadva.va_seq = 0; 4383 } 4384 4385 nadva.va_mask = AT_CTIME|AT_SEQ; 4386 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4387 nadva.va_ctime = nbdva.va_ctime; 4388 nadva.va_seq = 0; 4389 } 4390 4391 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4392 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4393 4394 /* 4395 * The cinfo.atomic = TRUE only if we have 4396 * non-zero va_seq's, and it has incremented by exactly one 4397 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4398 */ 4399 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4400 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4401 resp->source_cinfo.atomic = TRUE; 4402 else 4403 resp->source_cinfo.atomic = FALSE; 4404 4405 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4406 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4407 resp->target_cinfo.atomic = TRUE; 4408 else 4409 resp->target_cinfo.atomic = FALSE; 4410 4411 #ifdef VOLATILE_FH_TEST 4412 { 4413 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4414 4415 /* 4416 * Add the renamed file handle to the volatile rename list 4417 */ 4418 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4419 /* file handles may expire on rename */ 4420 vnode_t *vp; 4421 4422 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4423 /* 4424 * Already know that nnm will be a valid string 4425 */ 4426 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4427 NULL, NULL, NULL); 4428 kmem_free(nnm, nlen); 4429 if (!error) { 4430 add_volrnm_fh(cs->exi, vp); 4431 VN_RELE(vp); 4432 } 4433 } 4434 } 4435 #endif /* VOLATILE_FH_TEST */ 4436 4437 *cs->statusp = resp->status = NFS4_OK; 4438 out: 4439 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4440 RENAME4res *, resp); 4441 return; 4442 4443 err_out: 4444 kmem_free(onm, olen); 4445 kmem_free(nnm, nlen); 4446 4447 if (in_crit_src) nbl_end_crit(srcvp); 4448 if (in_crit_targ) nbl_end_crit(targvp); 4449 if (targvp) VN_RELE(targvp); 4450 if (srcvp) VN_RELE(srcvp); 4451 if (sfp) { 4452 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4453 rfs4_file_rele(sfp); 4454 } 4455 if (fp) { 4456 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4457 rfs4_file_rele(fp); 4458 } 4459 4460 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4461 RENAME4res *, resp); 4462 } 4463 4464 /* ARGSUSED */ 4465 static void 4466 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4467 struct compound_state *cs) 4468 { 4469 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4470 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4471 rfs4_client_t *cp; 4472 4473 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4474 RENEW4args *, args); 4475 4476 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4477 *cs->statusp = resp->status = 4478 rfs4_check_clientid(&args->clientid, 0); 4479 goto out; 4480 } 4481 4482 if (rfs4_lease_expired(cp)) { 4483 rfs4_client_rele(cp); 4484 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4485 goto out; 4486 } 4487 4488 rfs4_update_lease(cp); 4489 4490 mutex_enter(cp->cbinfo.cb_lock); 4491 if (cp->cbinfo.cb_notified_of_cb_path_down == FALSE) { 4492 cp->cbinfo.cb_notified_of_cb_path_down = TRUE; 4493 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4494 } else { 4495 *cs->statusp = resp->status = NFS4_OK; 4496 } 4497 mutex_exit(cp->cbinfo.cb_lock); 4498 4499 rfs4_client_rele(cp); 4500 4501 out: 4502 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4503 RENEW4res *, resp); 4504 } 4505 4506 /* ARGSUSED */ 4507 static void 4508 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4509 struct compound_state *cs) 4510 { 4511 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4512 4513 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4514 4515 /* No need to check cs->access - we are not accessing any object */ 4516 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4517 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4518 goto out; 4519 } 4520 if (cs->vp != NULL) { 4521 VN_RELE(cs->vp); 4522 } 4523 cs->vp = cs->saved_vp; 4524 cs->saved_vp = NULL; 4525 cs->exi = cs->saved_exi; 4526 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4527 *cs->statusp = resp->status = NFS4_OK; 4528 cs->deleg = FALSE; 4529 4530 out: 4531 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4532 RESTOREFH4res *, resp); 4533 } 4534 4535 /* ARGSUSED */ 4536 static void 4537 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4538 struct compound_state *cs) 4539 { 4540 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4541 4542 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4543 4544 /* No need to check cs->access - we are not accessing any object */ 4545 if (cs->vp == NULL) { 4546 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4547 goto out; 4548 } 4549 if (cs->saved_vp != NULL) { 4550 VN_RELE(cs->saved_vp); 4551 } 4552 cs->saved_vp = cs->vp; 4553 VN_HOLD(cs->saved_vp); 4554 cs->saved_exi = cs->exi; 4555 /* 4556 * since SAVEFH is fairly rare, don't alloc space for its fh 4557 * unless necessary. 4558 */ 4559 if (cs->saved_fh.nfs_fh4_val == NULL) { 4560 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4561 } 4562 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4563 *cs->statusp = resp->status = NFS4_OK; 4564 4565 out: 4566 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4567 SAVEFH4res *, resp); 4568 } 4569 4570 /* 4571 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4572 * return the bitmap of attrs that were set successfully. It is also 4573 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4574 * always be called only after rfs4_do_set_attrs(). 4575 * 4576 * Verify that the attributes are same as the expected ones. sargp->vap 4577 * and sargp->sbp contain the input attributes as translated from fattr4. 4578 * 4579 * This function verifies only the attrs that correspond to a vattr or 4580 * vfsstat struct. That is because of the extra step needed to get the 4581 * corresponding system structs. Other attributes have already been set or 4582 * verified by do_rfs4_set_attrs. 4583 * 4584 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4585 */ 4586 static int 4587 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4588 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4589 { 4590 int error, ret_error = 0; 4591 int i, k; 4592 uint_t sva_mask = sargp->vap->va_mask; 4593 uint_t vbit; 4594 union nfs4_attr_u *na; 4595 uint8_t *amap; 4596 bool_t getsb = ntovp->vfsstat; 4597 4598 if (sva_mask != 0) { 4599 /* 4600 * Okay to overwrite sargp->vap because we verify based 4601 * on the incoming values. 4602 */ 4603 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4604 sargp->cs->cr, NULL); 4605 if (ret_error) { 4606 if (resp == NULL) 4607 return (ret_error); 4608 /* 4609 * Must return bitmap of successful attrs 4610 */ 4611 sva_mask = 0; /* to prevent checking vap later */ 4612 } else { 4613 /* 4614 * Some file systems clobber va_mask. it is probably 4615 * wrong of them to do so, nonethless we practice 4616 * defensive coding. 4617 * See bug id 4276830. 4618 */ 4619 sargp->vap->va_mask = sva_mask; 4620 } 4621 } 4622 4623 if (getsb) { 4624 /* 4625 * Now get the superblock and loop on the bitmap, as there is 4626 * no simple way of translating from superblock to bitmap4. 4627 */ 4628 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4629 if (ret_error) { 4630 if (resp == NULL) 4631 goto errout; 4632 getsb = FALSE; 4633 } 4634 } 4635 4636 /* 4637 * Now loop and verify each attribute which getattr returned 4638 * whether it's the same as the input. 4639 */ 4640 if (resp == NULL && !getsb && (sva_mask == 0)) 4641 goto errout; 4642 4643 na = ntovp->na; 4644 amap = ntovp->amap; 4645 k = 0; 4646 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4647 k = *amap; 4648 ASSERT(nfs4_ntov_map[k].nval == k); 4649 vbit = nfs4_ntov_map[k].vbit; 4650 4651 /* 4652 * If vattr attribute but VOP_GETATTR failed, or it's 4653 * superblock attribute but VFS_STATVFS failed, skip 4654 */ 4655 if (vbit) { 4656 if ((vbit & sva_mask) == 0) 4657 continue; 4658 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4659 continue; 4660 } 4661 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4662 if (resp != NULL) { 4663 if (error) 4664 ret_error = -1; /* not all match */ 4665 else /* update response bitmap */ 4666 *resp |= nfs4_ntov_map[k].fbit; 4667 continue; 4668 } 4669 if (error) { 4670 ret_error = -1; /* not all match */ 4671 break; 4672 } 4673 } 4674 errout: 4675 return (ret_error); 4676 } 4677 4678 /* 4679 * Decode the attribute to be set/verified. If the attr requires a sys op 4680 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4681 * call the sv_getit function for it, because the sys op hasn't yet been done. 4682 * Return 0 for success, error code if failed. 4683 * 4684 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 4685 */ 4686 static int 4687 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 4688 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 4689 { 4690 int error = 0; 4691 bool_t set_later; 4692 4693 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 4694 4695 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 4696 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 4697 /* 4698 * don't verify yet if a vattr or sb dependent attr, 4699 * because we don't have their sys values yet. 4700 * Will be done later. 4701 */ 4702 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 4703 /* 4704 * ACLs are a special case, since setting the MODE 4705 * conflicts with setting the ACL. We delay setting 4706 * the ACL until all other attributes have been set. 4707 * The ACL gets set in do_rfs4_op_setattr(). 4708 */ 4709 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 4710 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 4711 sargp, nap); 4712 if (error) { 4713 xdr_free(nfs4_ntov_map[k].xfunc, 4714 (caddr_t)nap); 4715 } 4716 } 4717 } 4718 } else { 4719 #ifdef DEBUG 4720 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 4721 "decoding attribute %d\n", k); 4722 #endif 4723 error = EINVAL; 4724 } 4725 if (!error && resp_bval && !set_later) { 4726 *resp_bval |= nfs4_ntov_map[k].fbit; 4727 } 4728 4729 return (error); 4730 } 4731 4732 /* 4733 * Set vattr based on incoming fattr4 attrs - used by setattr. 4734 * Set response mask. Ignore any values that are not writable vattr attrs. 4735 */ 4736 static nfsstat4 4737 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4738 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 4739 nfs4_attr_cmd_t cmd) 4740 { 4741 int error = 0; 4742 int i; 4743 char *attrs = fattrp->attrlist4; 4744 uint32_t attrslen = fattrp->attrlist4_len; 4745 XDR xdr; 4746 nfsstat4 status = NFS4_OK; 4747 vnode_t *vp = cs->vp; 4748 union nfs4_attr_u *na; 4749 uint8_t *amap; 4750 4751 #ifndef lint 4752 /* 4753 * Make sure that maximum attribute number can be expressed as an 4754 * 8 bit quantity. 4755 */ 4756 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 4757 #endif 4758 4759 if (vp == NULL) { 4760 if (resp) 4761 *resp = 0; 4762 return (NFS4ERR_NOFILEHANDLE); 4763 } 4764 if (cs->access == CS_ACCESS_DENIED) { 4765 if (resp) 4766 *resp = 0; 4767 return (NFS4ERR_ACCESS); 4768 } 4769 4770 sargp->op = cmd; 4771 sargp->cs = cs; 4772 sargp->flag = 0; /* may be set later */ 4773 sargp->vap->va_mask = 0; 4774 sargp->rdattr_error = NFS4_OK; 4775 sargp->rdattr_error_req = FALSE; 4776 /* sargp->sbp is set by the caller */ 4777 4778 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 4779 4780 na = ntovp->na; 4781 amap = ntovp->amap; 4782 4783 /* 4784 * The following loop iterates on the nfs4_ntov_map checking 4785 * if the fbit is set in the requested bitmap. 4786 * If set then we process the arguments using the 4787 * rfs4_fattr4 conversion functions to populate the setattr 4788 * vattr and va_mask. Any settable attrs that are not using vattr 4789 * will be set in this loop. 4790 */ 4791 for (i = 0; i < nfs4_ntov_map_size; i++) { 4792 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 4793 continue; 4794 } 4795 /* 4796 * If setattr, must be a writable attr. 4797 * If verify/nverify, must be a readable attr. 4798 */ 4799 if ((error = (*nfs4_ntov_map[i].sv_getit)( 4800 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 4801 /* 4802 * Client tries to set/verify an 4803 * unsupported attribute, tries to set 4804 * a read only attr or verify a write 4805 * only one - error! 4806 */ 4807 break; 4808 } 4809 /* 4810 * Decode the attribute to set/verify 4811 */ 4812 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 4813 &xdr, resp ? resp : NULL, na); 4814 if (error) 4815 break; 4816 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 4817 na++; 4818 (ntovp->attrcnt)++; 4819 if (nfs4_ntov_map[i].vfsstat) 4820 ntovp->vfsstat = TRUE; 4821 } 4822 4823 if (error != 0) 4824 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 4825 puterrno4(error)); 4826 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 4827 return (status); 4828 } 4829 4830 static nfsstat4 4831 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4832 stateid4 *stateid) 4833 { 4834 int error = 0; 4835 struct nfs4_svgetit_arg sarg; 4836 bool_t trunc; 4837 4838 nfsstat4 status = NFS4_OK; 4839 cred_t *cr = cs->cr; 4840 vnode_t *vp = cs->vp; 4841 struct nfs4_ntov_table ntov; 4842 struct statvfs64 sb; 4843 struct vattr bva; 4844 struct flock64 bf; 4845 int in_crit = 0; 4846 uint_t saved_mask = 0; 4847 caller_context_t ct; 4848 4849 *resp = 0; 4850 sarg.sbp = &sb; 4851 nfs4_ntov_table_init(&ntov); 4852 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 4853 NFS4ATTR_SETIT); 4854 if (status != NFS4_OK) { 4855 /* 4856 * failed set attrs 4857 */ 4858 goto done; 4859 } 4860 if ((sarg.vap->va_mask == 0) && 4861 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 4862 /* 4863 * no further work to be done 4864 */ 4865 goto done; 4866 } 4867 4868 /* 4869 * If we got a request to set the ACL and the MODE, only 4870 * allow changing VSUID, VSGID, and VSVTX. Attempting 4871 * to change any other bits, along with setting an ACL, 4872 * gives NFS4ERR_INVAL. 4873 */ 4874 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 4875 (fattrp->attrmask & FATTR4_MODE_MASK)) { 4876 vattr_t va; 4877 4878 va.va_mask = AT_MODE; 4879 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 4880 if (error) { 4881 status = puterrno4(error); 4882 goto done; 4883 } 4884 if ((sarg.vap->va_mode ^ va.va_mode) & 4885 ~(VSUID | VSGID | VSVTX)) { 4886 status = NFS4ERR_INVAL; 4887 goto done; 4888 } 4889 } 4890 4891 /* Check stateid only if size has been set */ 4892 if (sarg.vap->va_mask & AT_SIZE) { 4893 trunc = (sarg.vap->va_size == 0); 4894 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 4895 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 4896 if (status != NFS4_OK) 4897 goto done; 4898 } else { 4899 ct.cc_sysid = 0; 4900 ct.cc_pid = 0; 4901 ct.cc_caller_id = nfs4_srv_caller_id; 4902 } 4903 4904 /* XXX start of possible race with delegations */ 4905 4906 /* 4907 * We need to specially handle size changes because it is 4908 * possible for the client to create a file with read-only 4909 * modes, but with the file opened for writing. If the client 4910 * then tries to set the file size, e.g. ftruncate(3C), 4911 * fcntl(F_FREESP), the normal access checking done in 4912 * VOP_SETATTR would prevent the client from doing it even though 4913 * it should be allowed to do so. To get around this, we do the 4914 * access checking for ourselves and use VOP_SPACE which doesn't 4915 * do the access checking. 4916 * Also the client should not be allowed to change the file 4917 * size if there is a conflicting non-blocking mandatory lock in 4918 * the region of the change. 4919 */ 4920 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 4921 u_offset_t offset; 4922 ssize_t length; 4923 4924 /* 4925 * ufs_setattr clears AT_SIZE from vap->va_mask, but 4926 * before returning, sarg.vap->va_mask is used to 4927 * generate the setattr reply bitmap. We also clear 4928 * AT_SIZE below before calling VOP_SPACE. For both 4929 * of these cases, the va_mask needs to be saved here 4930 * and restored after calling VOP_SETATTR. 4931 */ 4932 saved_mask = sarg.vap->va_mask; 4933 4934 /* 4935 * Check any possible conflict due to NBMAND locks. 4936 * Get into critical region before VOP_GETATTR, so the 4937 * size attribute is valid when checking conflicts. 4938 */ 4939 if (nbl_need_check(vp)) { 4940 nbl_start_crit(vp, RW_READER); 4941 in_crit = 1; 4942 } 4943 4944 bva.va_mask = AT_UID|AT_SIZE; 4945 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 4946 status = puterrno4(error); 4947 goto done; 4948 } 4949 4950 if (in_crit) { 4951 if (sarg.vap->va_size < bva.va_size) { 4952 offset = sarg.vap->va_size; 4953 length = bva.va_size - sarg.vap->va_size; 4954 } else { 4955 offset = bva.va_size; 4956 length = sarg.vap->va_size - bva.va_size; 4957 } 4958 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 4959 &ct)) { 4960 status = NFS4ERR_LOCKED; 4961 goto done; 4962 } 4963 } 4964 4965 if (crgetuid(cr) == bva.va_uid) { 4966 sarg.vap->va_mask &= ~AT_SIZE; 4967 bf.l_type = F_WRLCK; 4968 bf.l_whence = 0; 4969 bf.l_start = (off64_t)sarg.vap->va_size; 4970 bf.l_len = 0; 4971 bf.l_sysid = 0; 4972 bf.l_pid = 0; 4973 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 4974 (offset_t)sarg.vap->va_size, cr, &ct); 4975 } 4976 } 4977 4978 if (!error && sarg.vap->va_mask != 0) 4979 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 4980 4981 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 4982 if (saved_mask & AT_SIZE) 4983 sarg.vap->va_mask |= AT_SIZE; 4984 4985 /* 4986 * If an ACL was being set, it has been delayed until now, 4987 * in order to set the mode (via the VOP_SETATTR() above) first. 4988 */ 4989 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 4990 int i; 4991 4992 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 4993 if (ntov.amap[i] == FATTR4_ACL) 4994 break; 4995 if (i < NFS4_MAXNUM_ATTRS) { 4996 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 4997 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 4998 if (error == 0) { 4999 *resp |= FATTR4_ACL_MASK; 5000 } else if (error == ENOTSUP) { 5001 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5002 status = NFS4ERR_ATTRNOTSUPP; 5003 goto done; 5004 } 5005 } else { 5006 NFS4_DEBUG(rfs4_debug, 5007 (CE_NOTE, "do_rfs4_op_setattr: " 5008 "unable to find ACL in fattr4")); 5009 error = EINVAL; 5010 } 5011 } 5012 5013 if (error) { 5014 status = puterrno4(error); 5015 5016 /* 5017 * Set the response bitmap when setattr failed. 5018 * If VOP_SETATTR partially succeeded, test by doing a 5019 * VOP_GETATTR on the object and comparing the data 5020 * to the setattr arguments. 5021 */ 5022 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5023 } else { 5024 /* 5025 * Force modified metadata out to stable storage. 5026 */ 5027 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5028 /* 5029 * Set response bitmap 5030 */ 5031 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5032 } 5033 5034 /* Return early and already have a NFSv4 error */ 5035 done: 5036 /* 5037 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5038 * conversion sets both readable and writeable NFS4 attrs 5039 * for AT_MTIME and AT_ATIME. The line below masks out 5040 * unrequested attrs from the setattr result bitmap. This 5041 * is placed after the done: label to catch the ATTRNOTSUP 5042 * case. 5043 */ 5044 *resp &= fattrp->attrmask; 5045 5046 if (in_crit) 5047 nbl_end_crit(vp); 5048 5049 nfs4_ntov_table_free(&ntov, &sarg); 5050 5051 return (status); 5052 } 5053 5054 /* ARGSUSED */ 5055 static void 5056 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5057 struct compound_state *cs) 5058 { 5059 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5060 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5061 bslabel_t *clabel; 5062 5063 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5064 SETATTR4args *, args); 5065 5066 if (cs->vp == NULL) { 5067 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5068 goto out; 5069 } 5070 5071 /* 5072 * If there is an unshared filesystem mounted on this vnode, 5073 * do not allow to setattr on this vnode. 5074 */ 5075 if (vn_ismntpt(cs->vp)) { 5076 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5077 goto out; 5078 } 5079 5080 resp->attrsset = 0; 5081 5082 if (rdonly4(cs->exi, cs->vp, req)) { 5083 *cs->statusp = resp->status = NFS4ERR_ROFS; 5084 goto out; 5085 } 5086 5087 /* check label before setting attributes */ 5088 if (is_system_labeled()) { 5089 ASSERT(req->rq_label != NULL); 5090 clabel = req->rq_label; 5091 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5092 "got client label from request(1)", 5093 struct svc_req *, req); 5094 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5095 if (!do_rfs_label_check(clabel, cs->vp, 5096 EQUALITY_CHECK)) { 5097 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5098 goto out; 5099 } 5100 } 5101 } 5102 5103 *cs->statusp = resp->status = 5104 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5105 &args->stateid); 5106 5107 out: 5108 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5109 SETATTR4res *, resp); 5110 } 5111 5112 /* ARGSUSED */ 5113 static void 5114 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5115 struct compound_state *cs) 5116 { 5117 /* 5118 * verify and nverify are exactly the same, except that nverify 5119 * succeeds when some argument changed, and verify succeeds when 5120 * when none changed. 5121 */ 5122 5123 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5124 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5125 5126 int error; 5127 struct nfs4_svgetit_arg sarg; 5128 struct statvfs64 sb; 5129 struct nfs4_ntov_table ntov; 5130 5131 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5132 VERIFY4args *, args); 5133 5134 if (cs->vp == NULL) { 5135 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5136 goto out; 5137 } 5138 5139 sarg.sbp = &sb; 5140 nfs4_ntov_table_init(&ntov); 5141 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5142 &sarg, &ntov, NFS4ATTR_VERIT); 5143 if (resp->status != NFS4_OK) { 5144 /* 5145 * do_rfs4_set_attrs will try to verify systemwide attrs, 5146 * so could return -1 for "no match". 5147 */ 5148 if (resp->status == -1) 5149 resp->status = NFS4ERR_NOT_SAME; 5150 goto done; 5151 } 5152 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5153 switch (error) { 5154 case 0: 5155 resp->status = NFS4_OK; 5156 break; 5157 case -1: 5158 resp->status = NFS4ERR_NOT_SAME; 5159 break; 5160 default: 5161 resp->status = puterrno4(error); 5162 break; 5163 } 5164 done: 5165 *cs->statusp = resp->status; 5166 nfs4_ntov_table_free(&ntov, &sarg); 5167 out: 5168 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5169 VERIFY4res *, resp); 5170 } 5171 5172 /* ARGSUSED */ 5173 static void 5174 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5175 struct compound_state *cs) 5176 { 5177 /* 5178 * verify and nverify are exactly the same, except that nverify 5179 * succeeds when some argument changed, and verify succeeds when 5180 * when none changed. 5181 */ 5182 5183 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5184 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5185 5186 int error; 5187 struct nfs4_svgetit_arg sarg; 5188 struct statvfs64 sb; 5189 struct nfs4_ntov_table ntov; 5190 5191 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5192 NVERIFY4args *, args); 5193 5194 if (cs->vp == NULL) { 5195 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5196 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5197 NVERIFY4res *, resp); 5198 return; 5199 } 5200 sarg.sbp = &sb; 5201 nfs4_ntov_table_init(&ntov); 5202 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5203 &sarg, &ntov, NFS4ATTR_VERIT); 5204 if (resp->status != NFS4_OK) { 5205 /* 5206 * do_rfs4_set_attrs will try to verify systemwide attrs, 5207 * so could return -1 for "no match". 5208 */ 5209 if (resp->status == -1) 5210 resp->status = NFS4_OK; 5211 goto done; 5212 } 5213 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5214 switch (error) { 5215 case 0: 5216 resp->status = NFS4ERR_SAME; 5217 break; 5218 case -1: 5219 resp->status = NFS4_OK; 5220 break; 5221 default: 5222 resp->status = puterrno4(error); 5223 break; 5224 } 5225 done: 5226 *cs->statusp = resp->status; 5227 nfs4_ntov_table_free(&ntov, &sarg); 5228 5229 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5230 NVERIFY4res *, resp); 5231 } 5232 5233 /* 5234 * XXX - This should live in an NFS header file. 5235 */ 5236 #define MAX_IOVECS 12 5237 5238 /* ARGSUSED */ 5239 static void 5240 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5241 struct compound_state *cs) 5242 { 5243 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5244 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5245 int error; 5246 vnode_t *vp; 5247 struct vattr bva; 5248 u_offset_t rlimit; 5249 struct uio uio; 5250 struct iovec iov[MAX_IOVECS]; 5251 struct iovec *iovp; 5252 int iovcnt; 5253 int ioflag; 5254 cred_t *savecred, *cr; 5255 bool_t *deleg = &cs->deleg; 5256 nfsstat4 stat; 5257 int in_crit = 0; 5258 caller_context_t ct; 5259 5260 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5261 WRITE4args *, args); 5262 5263 vp = cs->vp; 5264 if (vp == NULL) { 5265 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5266 goto out; 5267 } 5268 if (cs->access == CS_ACCESS_DENIED) { 5269 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5270 goto out; 5271 } 5272 5273 cr = cs->cr; 5274 5275 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5276 deleg, TRUE, &ct)) != NFS4_OK) { 5277 *cs->statusp = resp->status = stat; 5278 goto out; 5279 } 5280 5281 /* 5282 * We have to enter the critical region before calling VOP_RWLOCK 5283 * to avoid a deadlock with ufs. 5284 */ 5285 if (nbl_need_check(vp)) { 5286 nbl_start_crit(vp, RW_READER); 5287 in_crit = 1; 5288 if (nbl_conflict(vp, NBL_WRITE, 5289 args->offset, args->data_len, 0, &ct)) { 5290 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5291 goto out; 5292 } 5293 } 5294 5295 bva.va_mask = AT_MODE | AT_UID; 5296 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5297 5298 /* 5299 * If we can't get the attributes, then we can't do the 5300 * right access checking. So, we'll fail the request. 5301 */ 5302 if (error) { 5303 *cs->statusp = resp->status = puterrno4(error); 5304 goto out; 5305 } 5306 5307 if (rdonly4(cs->exi, cs->vp, req)) { 5308 *cs->statusp = resp->status = NFS4ERR_ROFS; 5309 goto out; 5310 } 5311 5312 if (vp->v_type != VREG) { 5313 *cs->statusp = resp->status = 5314 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5315 goto out; 5316 } 5317 5318 if (crgetuid(cr) != bva.va_uid && 5319 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5320 *cs->statusp = resp->status = puterrno4(error); 5321 goto out; 5322 } 5323 5324 if (MANDLOCK(vp, bva.va_mode)) { 5325 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5326 goto out; 5327 } 5328 5329 if (args->data_len == 0) { 5330 *cs->statusp = resp->status = NFS4_OK; 5331 resp->count = 0; 5332 resp->committed = args->stable; 5333 resp->writeverf = Write4verf; 5334 goto out; 5335 } 5336 5337 if (args->mblk != NULL) { 5338 mblk_t *m; 5339 uint_t bytes, round_len; 5340 5341 iovcnt = 0; 5342 bytes = 0; 5343 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5344 for (m = args->mblk; 5345 m != NULL && bytes < round_len; 5346 m = m->b_cont) { 5347 iovcnt++; 5348 bytes += MBLKL(m); 5349 } 5350 #ifdef DEBUG 5351 /* should have ended on an mblk boundary */ 5352 if (bytes != round_len) { 5353 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5354 bytes, round_len, args->data_len); 5355 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5356 (void *)args->mblk, (void *)m); 5357 ASSERT(bytes == round_len); 5358 } 5359 #endif 5360 if (iovcnt <= MAX_IOVECS) { 5361 iovp = iov; 5362 } else { 5363 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5364 } 5365 mblk_to_iov(args->mblk, iovcnt, iovp); 5366 } else { 5367 iovcnt = 1; 5368 iovp = iov; 5369 iovp->iov_base = args->data_val; 5370 iovp->iov_len = args->data_len; 5371 } 5372 5373 uio.uio_iov = iovp; 5374 uio.uio_iovcnt = iovcnt; 5375 5376 uio.uio_segflg = UIO_SYSSPACE; 5377 uio.uio_extflg = UIO_COPY_DEFAULT; 5378 uio.uio_loffset = args->offset; 5379 uio.uio_resid = args->data_len; 5380 uio.uio_llimit = curproc->p_fsz_ctl; 5381 rlimit = uio.uio_llimit - args->offset; 5382 if (rlimit < (u_offset_t)uio.uio_resid) 5383 uio.uio_resid = (int)rlimit; 5384 5385 if (args->stable == UNSTABLE4) 5386 ioflag = 0; 5387 else if (args->stable == FILE_SYNC4) 5388 ioflag = FSYNC; 5389 else if (args->stable == DATA_SYNC4) 5390 ioflag = FDSYNC; 5391 else { 5392 if (iovp != iov) 5393 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5394 *cs->statusp = resp->status = NFS4ERR_INVAL; 5395 goto out; 5396 } 5397 5398 /* 5399 * We're changing creds because VM may fault and we need 5400 * the cred of the current thread to be used if quota 5401 * checking is enabled. 5402 */ 5403 savecred = curthread->t_cred; 5404 curthread->t_cred = cr; 5405 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5406 curthread->t_cred = savecred; 5407 5408 if (iovp != iov) 5409 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5410 5411 if (error) { 5412 *cs->statusp = resp->status = puterrno4(error); 5413 goto out; 5414 } 5415 5416 *cs->statusp = resp->status = NFS4_OK; 5417 resp->count = args->data_len - uio.uio_resid; 5418 5419 if (ioflag == 0) 5420 resp->committed = UNSTABLE4; 5421 else 5422 resp->committed = FILE_SYNC4; 5423 5424 resp->writeverf = Write4verf; 5425 5426 out: 5427 if (in_crit) 5428 nbl_end_crit(vp); 5429 5430 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5431 WRITE4res *, resp); 5432 } 5433 5434 5435 /* XXX put in a header file */ 5436 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5437 5438 void 5439 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5440 struct svc_req *req, cred_t *cr) 5441 { 5442 uint_t i; 5443 struct compound_state cs; 5444 5445 rfs4_init_compound_state(&cs); 5446 /* 5447 * Form a reply tag by copying over the reqeuest tag. 5448 */ 5449 resp->tag.utf8string_val = 5450 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5451 resp->tag.utf8string_len = args->tag.utf8string_len; 5452 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5453 resp->tag.utf8string_len); 5454 5455 cs.statusp = &resp->status; 5456 cs.req = req; 5457 5458 /* 5459 * XXX for now, minorversion should be zero 5460 */ 5461 if (args->minorversion != NFS4_MINORVERSION) { 5462 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5463 &cs, COMPOUND4args *, args); 5464 resp->array_len = 0; 5465 resp->array = NULL; 5466 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5467 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5468 &cs, COMPOUND4res *, resp); 5469 resp->array_len = 0; 5470 return; 5471 } 5472 5473 resp->array_len = args->array_len; 5474 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5475 KM_SLEEP); 5476 5477 ASSERT(exi == NULL); 5478 ASSERT(cr == NULL); 5479 5480 cr = crget(); 5481 ASSERT(cr != NULL); 5482 5483 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5484 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5485 &cs, COMPOUND4args *, args); 5486 crfree(cr); 5487 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5488 &cs, COMPOUND4res *, resp); 5489 return; 5490 } 5491 5492 cs.basecr = cr; 5493 5494 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5495 COMPOUND4args *, args); 5496 5497 /* 5498 * For now, NFS4 compound processing must be protected by 5499 * exported_lock because it can access more than one exportinfo 5500 * per compound and share/unshare can now change multiple 5501 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5502 * per proc (excluding public exinfo), and exi_count design 5503 * is sufficient to protect concurrent execution of NFS2/3 5504 * ops along with unexport. This lock will be removed as 5505 * part of the NFSv4 phase 2 namespace redesign work. 5506 */ 5507 rw_enter(&exported_lock, RW_READER); 5508 5509 /* 5510 * If this is the first compound we've seen, we need to start all 5511 * new instances' grace periods. 5512 */ 5513 if (rfs4_seen_first_compound == 0) { 5514 rfs4_grace_start_new(); 5515 /* 5516 * This must be set after rfs4_grace_start_new(), otherwise 5517 * another thread could proceed past here before the former 5518 * is finished. 5519 */ 5520 rfs4_seen_first_compound = 1; 5521 } 5522 5523 for (i = 0; i < args->array_len && cs.cont; i++) { 5524 nfs_argop4 *argop; 5525 nfs_resop4 *resop; 5526 uint_t op; 5527 5528 argop = &args->array[i]; 5529 resop = &resp->array[i]; 5530 resop->resop = argop->argop; 5531 op = (uint_t)resop->resop; 5532 5533 if (op < rfsv4disp_cnt) { 5534 /* 5535 * Count the individual ops here; NULL and COMPOUND 5536 * are counted in common_dispatch() 5537 */ 5538 rfsproccnt_v4_ptr[op].value.ui64++; 5539 5540 NFS4_DEBUG(rfs4_debug > 1, 5541 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5542 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5543 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5544 rfs4_op_string[op], *cs.statusp)); 5545 if (*cs.statusp != NFS4_OK) 5546 cs.cont = FALSE; 5547 } else { 5548 /* 5549 * This is effectively dead code since XDR code 5550 * will have already returned BADXDR if op doesn't 5551 * decode to legal value. This only done for a 5552 * day when XDR code doesn't verify v4 opcodes. 5553 */ 5554 op = OP_ILLEGAL; 5555 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5556 5557 rfs4_op_illegal(argop, resop, req, &cs); 5558 cs.cont = FALSE; 5559 } 5560 5561 /* 5562 * If not at last op, and if we are to stop, then 5563 * compact the results array. 5564 */ 5565 if ((i + 1) < args->array_len && !cs.cont) { 5566 nfs_resop4 *new_res = kmem_alloc( 5567 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5568 bcopy(resp->array, 5569 new_res, (i+1) * sizeof (nfs_resop4)); 5570 kmem_free(resp->array, 5571 args->array_len * sizeof (nfs_resop4)); 5572 5573 resp->array_len = i + 1; 5574 resp->array = new_res; 5575 } 5576 } 5577 5578 rw_exit(&exported_lock); 5579 5580 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5581 COMPOUND4res *, resp); 5582 5583 if (cs.vp) 5584 VN_RELE(cs.vp); 5585 if (cs.saved_vp) 5586 VN_RELE(cs.saved_vp); 5587 if (cs.saved_fh.nfs_fh4_val) 5588 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5589 5590 if (cs.basecr) 5591 crfree(cs.basecr); 5592 if (cs.cr) 5593 crfree(cs.cr); 5594 /* 5595 * done with this compound request, free the label 5596 */ 5597 5598 if (req->rq_label != NULL) { 5599 kmem_free(req->rq_label, sizeof (bslabel_t)); 5600 req->rq_label = NULL; 5601 } 5602 } 5603 5604 /* 5605 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5606 * XXX zero out the tag and array values. Need to investigate why the 5607 * XXX calls occur, but at least prevent the panic for now. 5608 */ 5609 void 5610 rfs4_compound_free(COMPOUND4res *resp) 5611 { 5612 uint_t i; 5613 5614 if (resp->tag.utf8string_val) { 5615 UTF8STRING_FREE(resp->tag) 5616 } 5617 5618 for (i = 0; i < resp->array_len; i++) { 5619 nfs_resop4 *resop; 5620 uint_t op; 5621 5622 resop = &resp->array[i]; 5623 op = (uint_t)resop->resop; 5624 if (op < rfsv4disp_cnt) { 5625 (*rfsv4disptab[op].dis_resfree)(resop); 5626 } 5627 } 5628 if (resp->array != NULL) { 5629 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5630 } 5631 } 5632 5633 /* 5634 * Process the value of the compound request rpc flags, as a bit-AND 5635 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5636 */ 5637 void 5638 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5639 { 5640 int i; 5641 int flag = RPC_ALL; 5642 5643 for (i = 0; flag && i < args->array_len; i++) { 5644 uint_t op; 5645 5646 op = (uint_t)args->array[i].argop; 5647 5648 if (op < rfsv4disp_cnt) 5649 flag &= rfsv4disptab[op].dis_flags; 5650 else 5651 flag = 0; 5652 } 5653 *flagp = flag; 5654 } 5655 5656 nfsstat4 5657 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5658 { 5659 nfsstat4 e; 5660 5661 rfs4_dbe_lock(cp->dbe); 5662 5663 if (cp->sysidt != LM_NOSYSID) { 5664 *sp = cp->sysidt; 5665 e = NFS4_OK; 5666 5667 } else if ((cp->sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 5668 *sp = cp->sysidt; 5669 e = NFS4_OK; 5670 5671 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 5672 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 5673 } else 5674 e = NFS4ERR_DELAY; 5675 5676 rfs4_dbe_unlock(cp->dbe); 5677 return (e); 5678 } 5679 5680 #if defined(DEBUG) && ! defined(lint) 5681 static void lock_print(char *str, int operation, struct flock64 *flk) 5682 { 5683 char *op, *type; 5684 5685 switch (operation) { 5686 case F_GETLK: op = "F_GETLK"; 5687 break; 5688 case F_SETLK: op = "F_SETLK"; 5689 break; 5690 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 5691 break; 5692 default: op = "F_UNKNOWN"; 5693 break; 5694 } 5695 switch (flk->l_type) { 5696 case F_UNLCK: type = "F_UNLCK"; 5697 break; 5698 case F_RDLCK: type = "F_RDLCK"; 5699 break; 5700 case F_WRLCK: type = "F_WRLCK"; 5701 break; 5702 default: type = "F_UNKNOWN"; 5703 break; 5704 } 5705 5706 ASSERT(flk->l_whence == 0); 5707 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 5708 str, op, type, (longlong_t)flk->l_start, 5709 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 5710 } 5711 5712 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 5713 #else 5714 #define LOCK_PRINT(d, s, t, f) 5715 #endif 5716 5717 /*ARGSUSED*/ 5718 static bool_t 5719 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 5720 { 5721 return (TRUE); 5722 } 5723 5724 /* 5725 * Look up the pathname using the vp in cs as the directory vnode. 5726 * cs->vp will be the vnode for the file on success 5727 */ 5728 5729 static nfsstat4 5730 rfs4_lookup(component4 *component, struct svc_req *req, 5731 struct compound_state *cs) 5732 { 5733 char *nm; 5734 uint32_t len; 5735 nfsstat4 status; 5736 5737 if (cs->vp == NULL) { 5738 return (NFS4ERR_NOFILEHANDLE); 5739 } 5740 if (cs->vp->v_type != VDIR) { 5741 return (NFS4ERR_NOTDIR); 5742 } 5743 5744 if (!utf8_dir_verify(component)) 5745 return (NFS4ERR_INVAL); 5746 5747 nm = utf8_to_fn(component, &len, NULL); 5748 if (nm == NULL) { 5749 return (NFS4ERR_INVAL); 5750 } 5751 5752 if (len > MAXNAMELEN) { 5753 kmem_free(nm, len); 5754 return (NFS4ERR_NAMETOOLONG); 5755 } 5756 5757 status = do_rfs4_op_lookup(nm, len, req, cs); 5758 5759 kmem_free(nm, len); 5760 5761 return (status); 5762 } 5763 5764 static nfsstat4 5765 rfs4_lookupfile(component4 *component, struct svc_req *req, 5766 struct compound_state *cs, uint32_t access, 5767 change_info4 *cinfo) 5768 { 5769 nfsstat4 status; 5770 vnode_t *dvp = cs->vp; 5771 vattr_t bva, ava, fva; 5772 int error; 5773 5774 /* Get "before" change value */ 5775 bva.va_mask = AT_CTIME|AT_SEQ; 5776 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 5777 if (error) 5778 return (puterrno4(error)); 5779 5780 /* rfs4_lookup may VN_RELE directory */ 5781 VN_HOLD(dvp); 5782 5783 status = rfs4_lookup(component, req, cs); 5784 if (status != NFS4_OK) { 5785 VN_RELE(dvp); 5786 return (status); 5787 } 5788 5789 /* 5790 * Get "after" change value, if it fails, simply return the 5791 * before value. 5792 */ 5793 ava.va_mask = AT_CTIME|AT_SEQ; 5794 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 5795 ava.va_ctime = bva.va_ctime; 5796 ava.va_seq = 0; 5797 } 5798 VN_RELE(dvp); 5799 5800 /* 5801 * Validate the file is a file 5802 */ 5803 fva.va_mask = AT_TYPE|AT_MODE; 5804 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 5805 if (error) 5806 return (puterrno4(error)); 5807 5808 if (fva.va_type != VREG) { 5809 if (fva.va_type == VDIR) 5810 return (NFS4ERR_ISDIR); 5811 if (fva.va_type == VLNK) 5812 return (NFS4ERR_SYMLINK); 5813 return (NFS4ERR_INVAL); 5814 } 5815 5816 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 5817 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 5818 5819 /* 5820 * It is undefined if VOP_LOOKUP will change va_seq, so 5821 * cinfo.atomic = TRUE only if we have 5822 * non-zero va_seq's, and they have not changed. 5823 */ 5824 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 5825 cinfo->atomic = TRUE; 5826 else 5827 cinfo->atomic = FALSE; 5828 5829 /* Check for mandatory locking */ 5830 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 5831 return (check_open_access(access, cs, req)); 5832 } 5833 5834 static nfsstat4 5835 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 5836 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 5837 { 5838 int error; 5839 nfsstat4 status = NFS4_OK; 5840 vattr_t va; 5841 5842 tryagain: 5843 5844 /* 5845 * The file open mode used is VWRITE. If the client needs 5846 * some other semantic, then it should do the access checking 5847 * itself. It would have been nice to have the file open mode 5848 * passed as part of the arguments. 5849 */ 5850 5851 *created = TRUE; 5852 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 5853 5854 if (error) { 5855 *created = FALSE; 5856 5857 /* 5858 * If we got something other than file already exists 5859 * then just return this error. Otherwise, we got 5860 * EEXIST. If we were doing a GUARDED create, then 5861 * just return this error. Otherwise, we need to 5862 * make sure that this wasn't a duplicate of an 5863 * exclusive create request. 5864 * 5865 * The assumption is made that a non-exclusive create 5866 * request will never return EEXIST. 5867 */ 5868 5869 if (error != EEXIST || mode == GUARDED4) { 5870 status = puterrno4(error); 5871 return (status); 5872 } 5873 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 5874 NULL, NULL, NULL); 5875 5876 if (error) { 5877 /* 5878 * We couldn't find the file that we thought that 5879 * we just created. So, we'll just try creating 5880 * it again. 5881 */ 5882 if (error == ENOENT) 5883 goto tryagain; 5884 5885 status = puterrno4(error); 5886 return (status); 5887 } 5888 5889 if (mode == UNCHECKED4) { 5890 /* existing object must be regular file */ 5891 if ((*vpp)->v_type != VREG) { 5892 if ((*vpp)->v_type == VDIR) 5893 status = NFS4ERR_ISDIR; 5894 else if ((*vpp)->v_type == VLNK) 5895 status = NFS4ERR_SYMLINK; 5896 else 5897 status = NFS4ERR_INVAL; 5898 VN_RELE(*vpp); 5899 return (status); 5900 } 5901 5902 return (NFS4_OK); 5903 } 5904 5905 /* Check for duplicate request */ 5906 ASSERT(mtime != 0); 5907 va.va_mask = AT_MTIME; 5908 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 5909 if (!error) { 5910 /* We found the file */ 5911 if (va.va_mtime.tv_sec != mtime->tv_sec || 5912 va.va_mtime.tv_nsec != mtime->tv_nsec) { 5913 /* but its not our creation */ 5914 VN_RELE(*vpp); 5915 return (NFS4ERR_EXIST); 5916 } 5917 *created = TRUE; /* retrans of create == created */ 5918 return (NFS4_OK); 5919 } 5920 VN_RELE(*vpp); 5921 return (NFS4ERR_EXIST); 5922 } 5923 5924 return (NFS4_OK); 5925 } 5926 5927 static nfsstat4 5928 check_open_access(uint32_t access, 5929 struct compound_state *cs, struct svc_req *req) 5930 { 5931 int error; 5932 vnode_t *vp; 5933 bool_t readonly; 5934 cred_t *cr = cs->cr; 5935 5936 /* For now we don't allow mandatory locking as per V2/V3 */ 5937 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 5938 return (NFS4ERR_ACCESS); 5939 } 5940 5941 vp = cs->vp; 5942 ASSERT(cr != NULL && vp->v_type == VREG); 5943 5944 /* 5945 * If the file system is exported read only and we are trying 5946 * to open for write, then return NFS4ERR_ROFS 5947 */ 5948 5949 readonly = rdonly4(cs->exi, cs->vp, req); 5950 5951 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 5952 return (NFS4ERR_ROFS); 5953 5954 if (access & OPEN4_SHARE_ACCESS_READ) { 5955 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 5956 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 5957 return (NFS4ERR_ACCESS); 5958 } 5959 } 5960 5961 if (access & OPEN4_SHARE_ACCESS_WRITE) { 5962 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 5963 if (error) 5964 return (NFS4ERR_ACCESS); 5965 } 5966 5967 return (NFS4_OK); 5968 } 5969 5970 static nfsstat4 5971 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 5972 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 5973 { 5974 struct nfs4_svgetit_arg sarg; 5975 struct nfs4_ntov_table ntov; 5976 5977 bool_t ntov_table_init = FALSE; 5978 struct statvfs64 sb; 5979 nfsstat4 status; 5980 vnode_t *vp; 5981 vattr_t bva, ava, iva, cva, *vap; 5982 vnode_t *dvp; 5983 timespec32_t *mtime; 5984 char *nm = NULL; 5985 uint_t buflen; 5986 bool_t created; 5987 bool_t setsize = FALSE; 5988 len_t reqsize; 5989 int error; 5990 bool_t trunc; 5991 caller_context_t ct; 5992 component4 *component; 5993 bslabel_t *clabel; 5994 5995 sarg.sbp = &sb; 5996 5997 dvp = cs->vp; 5998 5999 /* Check if the file system is read only */ 6000 if (rdonly4(cs->exi, dvp, req)) 6001 return (NFS4ERR_ROFS); 6002 6003 /* check the label of including directory */ 6004 if (is_system_labeled()) { 6005 ASSERT(req->rq_label != NULL); 6006 clabel = req->rq_label; 6007 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6008 "got client label from request(1)", 6009 struct svc_req *, req); 6010 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6011 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK)) { 6012 return (NFS4ERR_ACCESS); 6013 } 6014 } 6015 } 6016 6017 /* 6018 * Get the last component of path name in nm. cs will reference 6019 * the including directory on success. 6020 */ 6021 component = &args->open_claim4_u.file; 6022 if (!utf8_dir_verify(component)) 6023 return (NFS4ERR_INVAL); 6024 6025 nm = utf8_to_fn(component, &buflen, NULL); 6026 6027 if (nm == NULL) 6028 return (NFS4ERR_RESOURCE); 6029 6030 if (buflen > MAXNAMELEN) { 6031 kmem_free(nm, buflen); 6032 return (NFS4ERR_NAMETOOLONG); 6033 } 6034 6035 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6036 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6037 if (error) { 6038 kmem_free(nm, buflen); 6039 return (puterrno4(error)); 6040 } 6041 6042 if (bva.va_type != VDIR) { 6043 kmem_free(nm, buflen); 6044 return (NFS4ERR_NOTDIR); 6045 } 6046 6047 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6048 6049 switch (args->mode) { 6050 case GUARDED4: 6051 /*FALLTHROUGH*/ 6052 case UNCHECKED4: 6053 nfs4_ntov_table_init(&ntov); 6054 ntov_table_init = TRUE; 6055 6056 *attrset = 0; 6057 status = do_rfs4_set_attrs(attrset, 6058 &args->createhow4_u.createattrs, 6059 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6060 6061 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6062 sarg.vap->va_type != VREG) { 6063 if (sarg.vap->va_type == VDIR) 6064 status = NFS4ERR_ISDIR; 6065 else if (sarg.vap->va_type == VLNK) 6066 status = NFS4ERR_SYMLINK; 6067 else 6068 status = NFS4ERR_INVAL; 6069 } 6070 6071 if (status != NFS4_OK) { 6072 kmem_free(nm, buflen); 6073 nfs4_ntov_table_free(&ntov, &sarg); 6074 *attrset = 0; 6075 return (status); 6076 } 6077 6078 vap = sarg.vap; 6079 vap->va_type = VREG; 6080 vap->va_mask |= AT_TYPE; 6081 6082 if ((vap->va_mask & AT_MODE) == 0) { 6083 vap->va_mask |= AT_MODE; 6084 vap->va_mode = (mode_t)0600; 6085 } 6086 6087 if (vap->va_mask & AT_SIZE) { 6088 6089 /* Disallow create with a non-zero size */ 6090 6091 if ((reqsize = sarg.vap->va_size) != 0) { 6092 kmem_free(nm, buflen); 6093 nfs4_ntov_table_free(&ntov, &sarg); 6094 *attrset = 0; 6095 return (NFS4ERR_INVAL); 6096 } 6097 setsize = TRUE; 6098 } 6099 break; 6100 6101 case EXCLUSIVE4: 6102 /* prohibit EXCL create of named attributes */ 6103 if (dvp->v_flag & V_XATTRDIR) { 6104 kmem_free(nm, buflen); 6105 *attrset = 0; 6106 return (NFS4ERR_INVAL); 6107 } 6108 6109 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6110 cva.va_type = VREG; 6111 /* 6112 * Ensure no time overflows. Assumes underlying 6113 * filesystem supports at least 32 bits. 6114 * Truncate nsec to usec resolution to allow valid 6115 * compares even if the underlying filesystem truncates. 6116 */ 6117 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6118 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6119 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6120 cva.va_mode = (mode_t)0; 6121 vap = &cva; 6122 break; 6123 } 6124 6125 status = create_vnode(dvp, nm, vap, args->mode, mtime, 6126 cs->cr, &vp, &created); 6127 kmem_free(nm, buflen); 6128 6129 if (status != NFS4_OK) { 6130 if (ntov_table_init) 6131 nfs4_ntov_table_free(&ntov, &sarg); 6132 *attrset = 0; 6133 return (status); 6134 } 6135 6136 trunc = (setsize && !created); 6137 6138 if (args->mode != EXCLUSIVE4) { 6139 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6140 6141 /* 6142 * True verification that object was created with correct 6143 * attrs is impossible. The attrs could have been changed 6144 * immediately after object creation. If attributes did 6145 * not verify, the only recourse for the server is to 6146 * destroy the object. Maybe if some attrs (like gid) 6147 * are set incorrectly, the object should be destroyed; 6148 * however, seems bad as a default policy. Do we really 6149 * want to destroy an object over one of the times not 6150 * verifying correctly? For these reasons, the server 6151 * currently sets bits in attrset for createattrs 6152 * that were set; however, no verification is done. 6153 * 6154 * vmask_to_nmask accounts for vattr bits set on create 6155 * [do_rfs4_set_attrs() only sets resp bits for 6156 * non-vattr/vfs bits.] 6157 * Mask off any bits we set by default so as not to return 6158 * more attrset bits than were requested in createattrs 6159 */ 6160 if (created) { 6161 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6162 *attrset &= createmask; 6163 } else { 6164 /* 6165 * We did not create the vnode (we tried but it 6166 * already existed). In this case, the only createattr 6167 * that the spec allows the server to set is size, 6168 * and even then, it can only be set if it is 0. 6169 */ 6170 *attrset = 0; 6171 if (trunc) 6172 *attrset = FATTR4_SIZE_MASK; 6173 } 6174 } 6175 if (ntov_table_init) 6176 nfs4_ntov_table_free(&ntov, &sarg); 6177 6178 /* 6179 * Get the initial "after" sequence number, if it fails, 6180 * set to zero, time to before. 6181 */ 6182 iva.va_mask = AT_CTIME|AT_SEQ; 6183 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6184 iva.va_seq = 0; 6185 iva.va_ctime = bva.va_ctime; 6186 } 6187 6188 /* 6189 * create_vnode attempts to create the file exclusive, 6190 * if it already exists the VOP_CREATE will fail and 6191 * may not increase va_seq. It is atomic if 6192 * we haven't changed the directory, but if it has changed 6193 * we don't know what changed it. 6194 */ 6195 if (!created) { 6196 if (bva.va_seq && iva.va_seq && 6197 bva.va_seq == iva.va_seq) 6198 cinfo->atomic = TRUE; 6199 else 6200 cinfo->atomic = FALSE; 6201 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6202 } else { 6203 /* 6204 * The entry was created, we need to sync the 6205 * directory metadata. 6206 */ 6207 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6208 6209 /* 6210 * Get "after" change value, if it fails, simply return the 6211 * before value. 6212 */ 6213 ava.va_mask = AT_CTIME|AT_SEQ; 6214 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6215 ava.va_ctime = bva.va_ctime; 6216 ava.va_seq = 0; 6217 } 6218 6219 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6220 6221 /* 6222 * The cinfo->atomic = TRUE only if we have 6223 * non-zero va_seq's, and it has incremented by exactly one 6224 * during the create_vnode and it didn't 6225 * change during the VOP_FSYNC. 6226 */ 6227 if (bva.va_seq && iva.va_seq && ava.va_seq && 6228 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6229 cinfo->atomic = TRUE; 6230 else 6231 cinfo->atomic = FALSE; 6232 } 6233 6234 /* Check for mandatory locking and that the size gets set. */ 6235 cva.va_mask = AT_MODE; 6236 if (setsize) 6237 cva.va_mask |= AT_SIZE; 6238 6239 /* Assume the worst */ 6240 cs->mandlock = TRUE; 6241 6242 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6243 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6244 6245 /* 6246 * Truncate the file if necessary; this would be 6247 * the case for create over an existing file. 6248 */ 6249 6250 if (trunc) { 6251 int in_crit = 0; 6252 rfs4_file_t *fp; 6253 bool_t create = FALSE; 6254 6255 /* 6256 * We are writing over an existing file. 6257 * Check to see if we need to recall a delegation. 6258 */ 6259 rfs4_hold_deleg_policy(); 6260 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6261 if (rfs4_check_delegated_byfp(FWRITE, fp, 6262 (reqsize == 0), FALSE, FALSE, &clientid)) { 6263 rfs4_file_rele(fp); 6264 rfs4_rele_deleg_policy(); 6265 VN_RELE(vp); 6266 *attrset = 0; 6267 return (NFS4ERR_DELAY); 6268 } 6269 rfs4_file_rele(fp); 6270 } 6271 rfs4_rele_deleg_policy(); 6272 6273 if (nbl_need_check(vp)) { 6274 in_crit = 1; 6275 6276 ASSERT(reqsize == 0); 6277 6278 nbl_start_crit(vp, RW_READER); 6279 if (nbl_conflict(vp, NBL_WRITE, 0, 6280 cva.va_size, 0, NULL)) { 6281 in_crit = 0; 6282 nbl_end_crit(vp); 6283 VN_RELE(vp); 6284 *attrset = 0; 6285 return (NFS4ERR_ACCESS); 6286 } 6287 } 6288 ct.cc_sysid = 0; 6289 ct.cc_pid = 0; 6290 ct.cc_caller_id = nfs4_srv_caller_id; 6291 6292 cva.va_mask = AT_SIZE; 6293 cva.va_size = reqsize; 6294 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6295 if (in_crit) 6296 nbl_end_crit(vp); 6297 } 6298 } 6299 6300 error = makefh4(&cs->fh, vp, cs->exi); 6301 6302 /* 6303 * Force modified data and metadata out to stable storage. 6304 */ 6305 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6306 6307 if (error) { 6308 VN_RELE(vp); 6309 *attrset = 0; 6310 return (puterrno4(error)); 6311 } 6312 6313 /* if parent dir is attrdir, set namedattr fh flag */ 6314 if (dvp->v_flag & V_XATTRDIR) 6315 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6316 6317 if (cs->vp) 6318 VN_RELE(cs->vp); 6319 6320 cs->vp = vp; 6321 6322 /* 6323 * if we did not create the file, we will need to check 6324 * the access bits on the file 6325 */ 6326 6327 if (!created) { 6328 if (setsize) 6329 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6330 status = check_open_access(args->share_access, cs, req); 6331 if (status != NFS4_OK) 6332 *attrset = 0; 6333 } 6334 return (status); 6335 } 6336 6337 /*ARGSUSED*/ 6338 static void 6339 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6340 rfs4_openowner_t *oo, delegreq_t deleg, 6341 uint32_t access, uint32_t deny, 6342 OPEN4res *resp, int deleg_cur) 6343 { 6344 /* XXX Currently not using req */ 6345 rfs4_state_t *state; 6346 rfs4_file_t *file; 6347 bool_t screate = TRUE; 6348 bool_t fcreate = TRUE; 6349 uint32_t amodes; 6350 uint32_t dmodes; 6351 rfs4_deleg_state_t *dsp; 6352 struct shrlock shr; 6353 struct shr_locowner shr_loco; 6354 sysid_t sysid; 6355 nfsstat4 status; 6356 caller_context_t ct; 6357 int fflags = 0; 6358 int recall = 0; 6359 int err; 6360 int cmd; 6361 6362 /* get the file struct and hold a lock on it during initial open */ 6363 file = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6364 if (file == NULL) { 6365 NFS4_DEBUG(rfs4_debug, 6366 (CE_NOTE, "rfs4_do_open: can't find file")); 6367 resp->status = NFS4ERR_SERVERFAULT; 6368 return; 6369 } 6370 6371 state = rfs4_findstate_by_owner_file(oo, file, &screate); 6372 if (state == NULL) { 6373 NFS4_DEBUG(rfs4_debug, 6374 (CE_NOTE, "rfs4_do_open: can't find state")); 6375 resp->status = NFS4ERR_RESOURCE; 6376 /* No need to keep any reference */ 6377 rfs4_file_rele_withunlock(file); 6378 return; 6379 } 6380 6381 /* try to get the sysid before continuing */ 6382 if ((status = rfs4_client_sysid(oo->client, &sysid)) != NFS4_OK) { 6383 resp->status = status; 6384 rfs4_file_rele(file); 6385 /* Not a fully formed open; "close" it */ 6386 if (screate == TRUE) 6387 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6388 rfs4_state_rele(state); 6389 return; 6390 } 6391 6392 /* Calculate the fflags for this OPEN. */ 6393 if (access & OPEN4_SHARE_ACCESS_READ) 6394 fflags |= FREAD; 6395 if (access & OPEN4_SHARE_ACCESS_WRITE) 6396 fflags |= FWRITE; 6397 6398 /* 6399 * Calculate the new deny and access mode that this open is adding to 6400 * the file for this open owner; 6401 */ 6402 dmodes = (deny & ~state->share_deny); 6403 amodes = (access & ~state->share_access); 6404 6405 /* 6406 * Check to see the client has already sent an open for this 6407 * open owner on this file with the same share/deny modes. 6408 * If so, we don't need to check for a conflict and we don't 6409 * need to add another shrlock. If not, then we need to 6410 * check for conflicts in deny and access before checking for 6411 * conflicts in delegation. We don't want to recall a 6412 * delegation based on an open that will eventually fail based 6413 * on shares modes. 6414 */ 6415 6416 if (dmodes || amodes) { 6417 shr.s_access = (short)access; 6418 shr.s_deny = (short)deny; 6419 shr.s_pid = rfs4_dbe_getid(oo->dbe); 6420 shr.s_sysid = sysid; 6421 shr_loco.sl_pid = shr.s_pid; 6422 shr_loco.sl_id = shr.s_sysid; 6423 shr.s_owner = (caddr_t)&shr_loco; 6424 shr.s_own_len = sizeof (shr_loco); 6425 6426 cmd = nbl_need_check(cs->vp) ? F_SHARE_NBMAND : F_SHARE; 6427 if ((err = vop_shrlock(cs->vp, cmd, &shr, fflags)) != 0) { 6428 6429 resp->status = err == EAGAIN ? 6430 NFS4ERR_SHARE_DENIED : puterrno4(err); 6431 6432 rfs4_file_rele(file); 6433 /* Not a fully formed open; "close" it */ 6434 if (screate == TRUE) 6435 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6436 rfs4_state_rele(state); 6437 return; 6438 } 6439 } 6440 6441 rfs4_dbe_lock(state->dbe); 6442 rfs4_dbe_lock(file->dbe); 6443 6444 /* 6445 * Check to see if this file is delegated and if so, if a 6446 * recall needs to be done. 6447 */ 6448 if (rfs4_check_recall(state, access)) { 6449 rfs4_dbe_unlock(file->dbe); 6450 rfs4_dbe_unlock(state->dbe); 6451 rfs4_recall_deleg(file, FALSE, state->owner->client); 6452 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6453 rfs4_dbe_lock(state->dbe); 6454 rfs4_dbe_lock(file->dbe); 6455 /* Let's see if the delegation was returned */ 6456 if (rfs4_check_recall(state, access)) { 6457 rfs4_dbe_unlock(file->dbe); 6458 rfs4_dbe_unlock(state->dbe); 6459 rfs4_file_rele(file); 6460 rfs4_update_lease(state->owner->client); 6461 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6462 /* Not a fully formed open; "close" it */ 6463 if (screate == TRUE) 6464 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6465 rfs4_state_rele(state); 6466 resp->status = NFS4ERR_DELAY; 6467 return; 6468 } 6469 } 6470 /* 6471 * the share check passed and any delegation conflict has been 6472 * taken care of, now call vop_open. 6473 * if this is the first open then call vop_open with fflags. 6474 * if not, call vn_open_upgrade with just the upgrade flags. 6475 * 6476 * if the file has been opened already, it will have the current 6477 * access mode in the state struct. if it has no share access, then 6478 * this is a new open. 6479 * 6480 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6481 * call VOP_OPEN(), just do the open upgrade. 6482 */ 6483 if (((state->share_access & OPEN4_SHARE_ACCESS_BOTH) == 0) && 6484 !deleg_cur) { 6485 ct.cc_sysid = sysid; 6486 ct.cc_pid = shr.s_pid; 6487 ct.cc_caller_id = nfs4_srv_caller_id; 6488 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6489 if (err) { 6490 rfs4_dbe_unlock(file->dbe); 6491 rfs4_dbe_unlock(state->dbe); 6492 rfs4_file_rele(file); 6493 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6494 /* Not a fully formed open; "close" it */ 6495 if (screate == TRUE) 6496 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6497 rfs4_state_rele(state); 6498 resp->status = NFS4ERR_SERVERFAULT; 6499 return; 6500 } 6501 } else { /* open upgrade */ 6502 /* 6503 * calculate the fflags for the new mode that is being added 6504 * by this upgrade. 6505 */ 6506 fflags = 0; 6507 if (amodes & OPEN4_SHARE_ACCESS_READ) 6508 fflags |= FREAD; 6509 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6510 fflags |= FWRITE; 6511 vn_open_upgrade(cs->vp, fflags); 6512 } 6513 6514 if (dmodes & OPEN4_SHARE_DENY_READ) 6515 file->deny_read++; 6516 if (dmodes & OPEN4_SHARE_DENY_WRITE) 6517 file->deny_write++; 6518 file->share_deny |= deny; 6519 state->share_deny |= deny; 6520 6521 if (amodes & OPEN4_SHARE_ACCESS_READ) 6522 file->access_read++; 6523 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6524 file->access_write++; 6525 file->share_access |= access; 6526 state->share_access |= access; 6527 6528 /* 6529 * Check for delegation here. if the deleg argument is not 6530 * DELEG_ANY, then this is a reclaim from a client and 6531 * we must honor the delegation requested. If necessary we can 6532 * set the recall flag. 6533 */ 6534 6535 dsp = rfs4_grant_delegation(deleg, state, &recall); 6536 6537 cs->deleg = (file->dinfo->dtype == OPEN_DELEGATE_WRITE); 6538 6539 next_stateid(&state->stateid); 6540 6541 resp->stateid = state->stateid.stateid; 6542 6543 rfs4_dbe_unlock(file->dbe); 6544 rfs4_dbe_unlock(state->dbe); 6545 6546 if (dsp) { 6547 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6548 rfs4_deleg_state_rele(dsp); 6549 } 6550 6551 rfs4_file_rele(file); 6552 rfs4_state_rele(state); 6553 6554 resp->status = NFS4_OK; 6555 } 6556 6557 /*ARGSUSED*/ 6558 static void 6559 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6560 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6561 { 6562 change_info4 *cinfo = &resp->cinfo; 6563 bitmap4 *attrset = &resp->attrset; 6564 6565 if (args->opentype == OPEN4_NOCREATE) 6566 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6567 req, cs, args->share_access, cinfo); 6568 else { 6569 /* inhibit delegation grants during exclusive create */ 6570 6571 if (args->mode == EXCLUSIVE4) 6572 rfs4_disable_delegation(); 6573 6574 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6575 oo->client->clientid); 6576 } 6577 6578 if (resp->status == NFS4_OK) { 6579 6580 /* cs->vp cs->fh now reference the desired file */ 6581 6582 rfs4_do_open(cs, req, oo, DELEG_ANY, args->share_access, 6583 args->share_deny, resp, 0); 6584 6585 /* 6586 * If rfs4_createfile set attrset, we must 6587 * clear this attrset before the response is copied. 6588 */ 6589 if (resp->status != NFS4_OK && resp->attrset) { 6590 resp->attrset = 0; 6591 } 6592 } 6593 else 6594 *cs->statusp = resp->status; 6595 6596 if (args->mode == EXCLUSIVE4) 6597 rfs4_enable_delegation(); 6598 } 6599 6600 /*ARGSUSED*/ 6601 static void 6602 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6603 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6604 { 6605 change_info4 *cinfo = &resp->cinfo; 6606 vattr_t va; 6607 vtype_t v_type = cs->vp->v_type; 6608 int error = 0; 6609 6610 /* Verify that we have a regular file */ 6611 if (v_type != VREG) { 6612 if (v_type == VDIR) 6613 resp->status = NFS4ERR_ISDIR; 6614 else if (v_type == VLNK) 6615 resp->status = NFS4ERR_SYMLINK; 6616 else 6617 resp->status = NFS4ERR_INVAL; 6618 return; 6619 } 6620 6621 va.va_mask = AT_MODE|AT_UID; 6622 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 6623 if (error) { 6624 resp->status = puterrno4(error); 6625 return; 6626 } 6627 6628 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 6629 6630 /* 6631 * Check if we have access to the file, Note the the file 6632 * could have originally been open UNCHECKED or GUARDED 6633 * with mode bits that will now fail, but there is nothing 6634 * we can really do about that except in the case that the 6635 * owner of the file is the one requesting the open. 6636 */ 6637 if (crgetuid(cs->cr) != va.va_uid) { 6638 resp->status = check_open_access(args->share_access, cs, req); 6639 if (resp->status != NFS4_OK) { 6640 return; 6641 } 6642 } 6643 6644 /* 6645 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 6646 */ 6647 cinfo->before = 0; 6648 cinfo->after = 0; 6649 cinfo->atomic = FALSE; 6650 6651 rfs4_do_open(cs, req, oo, 6652 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 6653 args->share_access, args->share_deny, resp, 0); 6654 } 6655 6656 static void 6657 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 6658 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6659 { 6660 int error; 6661 nfsstat4 status; 6662 stateid4 stateid = 6663 args->open_claim4_u.delegate_cur_info.delegate_stateid; 6664 rfs4_deleg_state_t *dsp; 6665 6666 /* 6667 * Find the state info from the stateid and confirm that the 6668 * file is delegated. If the state openowner is the same as 6669 * the supplied openowner we're done. If not, get the file 6670 * info from the found state info. Use that file info to 6671 * create the state for this lock owner. Note solaris doen't 6672 * really need the pathname to find the file. We may want to 6673 * lookup the pathname and make sure that the vp exist and 6674 * matches the vp in the file structure. However it is 6675 * possible that the pathname nolonger exists (local process 6676 * unlinks the file), so this may not be that useful. 6677 */ 6678 6679 status = rfs4_get_deleg_state(&stateid, &dsp); 6680 if (status != NFS4_OK) { 6681 resp->status = status; 6682 return; 6683 } 6684 6685 ASSERT(dsp->finfo->dinfo->dtype != OPEN_DELEGATE_NONE); 6686 6687 /* 6688 * New lock owner, create state. Since this was probably called 6689 * in response to a CB_RECALL we set deleg to DELEG_NONE 6690 */ 6691 6692 ASSERT(cs->vp != NULL); 6693 VN_RELE(cs->vp); 6694 VN_HOLD(dsp->finfo->vp); 6695 cs->vp = dsp->finfo->vp; 6696 6697 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 6698 rfs4_deleg_state_rele(dsp); 6699 *cs->statusp = resp->status = puterrno4(error); 6700 return; 6701 } 6702 6703 /* Mark progress for delegation returns */ 6704 dsp->finfo->dinfo->time_lastwrite = gethrestime_sec(); 6705 rfs4_deleg_state_rele(dsp); 6706 rfs4_do_open(cs, req, oo, DELEG_NONE, 6707 args->share_access, args->share_deny, resp, 1); 6708 } 6709 6710 /*ARGSUSED*/ 6711 static void 6712 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 6713 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6714 { 6715 /* 6716 * Lookup the pathname, it must already exist since this file 6717 * was delegated. 6718 * 6719 * Find the file and state info for this vp and open owner pair. 6720 * check that they are in fact delegated. 6721 * check that the state access and deny modes are the same. 6722 * 6723 * Return the delgation possibly seting the recall flag. 6724 */ 6725 rfs4_file_t *file; 6726 rfs4_state_t *state; 6727 bool_t create = FALSE; 6728 bool_t dcreate = FALSE; 6729 rfs4_deleg_state_t *dsp; 6730 nfsace4 *ace; 6731 6732 6733 /* Note we ignore oflags */ 6734 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 6735 req, cs, args->share_access, &resp->cinfo); 6736 6737 if (resp->status != NFS4_OK) { 6738 return; 6739 } 6740 6741 /* get the file struct and hold a lock on it during initial open */ 6742 file = rfs4_findfile_withlock(cs->vp, NULL, &create); 6743 if (file == NULL) { 6744 NFS4_DEBUG(rfs4_debug, 6745 (CE_NOTE, "rfs4_do_opendelprev: can't find file")); 6746 resp->status = NFS4ERR_SERVERFAULT; 6747 return; 6748 } 6749 6750 state = rfs4_findstate_by_owner_file(oo, file, &create); 6751 if (state == NULL) { 6752 NFS4_DEBUG(rfs4_debug, 6753 (CE_NOTE, "rfs4_do_opendelprev: can't find state")); 6754 resp->status = NFS4ERR_SERVERFAULT; 6755 rfs4_file_rele_withunlock(file); 6756 return; 6757 } 6758 6759 rfs4_dbe_lock(state->dbe); 6760 rfs4_dbe_lock(file->dbe); 6761 if (args->share_access != state->share_access || 6762 args->share_deny != state->share_deny || 6763 state->finfo->dinfo->dtype == OPEN_DELEGATE_NONE) { 6764 NFS4_DEBUG(rfs4_debug, 6765 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 6766 rfs4_dbe_unlock(file->dbe); 6767 rfs4_dbe_unlock(state->dbe); 6768 rfs4_file_rele(file); 6769 rfs4_state_rele(state); 6770 resp->status = NFS4ERR_SERVERFAULT; 6771 return; 6772 } 6773 rfs4_dbe_unlock(file->dbe); 6774 rfs4_dbe_unlock(state->dbe); 6775 6776 dsp = rfs4_finddeleg(state, &dcreate); 6777 if (dsp == NULL) { 6778 rfs4_state_rele(state); 6779 rfs4_file_rele(file); 6780 resp->status = NFS4ERR_SERVERFAULT; 6781 return; 6782 } 6783 6784 next_stateid(&state->stateid); 6785 6786 resp->stateid = state->stateid.stateid; 6787 6788 resp->delegation.delegation_type = dsp->dtype; 6789 6790 if (dsp->dtype == OPEN_DELEGATE_READ) { 6791 open_read_delegation4 *rv = 6792 &resp->delegation.open_delegation4_u.read; 6793 6794 rv->stateid = dsp->delegid.stateid; 6795 rv->recall = FALSE; /* no policy in place to set to TRUE */ 6796 ace = &rv->permissions; 6797 } else { 6798 open_write_delegation4 *rv = 6799 &resp->delegation.open_delegation4_u.write; 6800 6801 rv->stateid = dsp->delegid.stateid; 6802 rv->recall = FALSE; /* no policy in place to set to TRUE */ 6803 ace = &rv->permissions; 6804 rv->space_limit.limitby = NFS_LIMIT_SIZE; 6805 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 6806 } 6807 6808 /* XXX For now */ 6809 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 6810 ace->flag = 0; 6811 ace->access_mask = 0; 6812 ace->who.utf8string_len = 0; 6813 ace->who.utf8string_val = 0; 6814 6815 rfs4_deleg_state_rele(dsp); 6816 rfs4_state_rele(state); 6817 rfs4_file_rele(file); 6818 } 6819 6820 typedef enum { 6821 NFS4_CHKSEQ_OKAY = 0, 6822 NFS4_CHKSEQ_REPLAY = 1, 6823 NFS4_CHKSEQ_BAD = 2 6824 } rfs4_chkseq_t; 6825 6826 /* 6827 * Generic function for sequence number checks. 6828 */ 6829 static rfs4_chkseq_t 6830 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 6831 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 6832 { 6833 /* Same sequence ids and matching operations? */ 6834 if (seqid == rqst_seq && resop->resop == lastop->resop) { 6835 if (copyres == TRUE) { 6836 rfs4_free_reply(resop); 6837 rfs4_copy_reply(resop, lastop); 6838 } 6839 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6840 "Replayed SEQID %d\n", seqid)); 6841 return (NFS4_CHKSEQ_REPLAY); 6842 } 6843 6844 /* If the incoming sequence is not the next expected then it is bad */ 6845 if (rqst_seq != seqid + 1) { 6846 if (rqst_seq == seqid) { 6847 NFS4_DEBUG(rfs4_debug, 6848 (CE_NOTE, "BAD SEQID: Replayed sequence id " 6849 "but last op was %d current op is %d\n", 6850 lastop->resop, resop->resop)); 6851 return (NFS4_CHKSEQ_BAD); 6852 } 6853 NFS4_DEBUG(rfs4_debug, 6854 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 6855 rqst_seq, seqid)); 6856 return (NFS4_CHKSEQ_BAD); 6857 } 6858 6859 /* Everything okay -- next expected */ 6860 return (NFS4_CHKSEQ_OKAY); 6861 } 6862 6863 6864 static rfs4_chkseq_t 6865 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 6866 { 6867 rfs4_chkseq_t rc; 6868 6869 rfs4_dbe_lock(op->dbe); 6870 rc = rfs4_check_seqid(op->open_seqid, op->reply, seqid, resop, TRUE); 6871 rfs4_dbe_unlock(op->dbe); 6872 6873 if (rc == NFS4_CHKSEQ_OKAY) 6874 rfs4_update_lease(op->client); 6875 6876 return (rc); 6877 } 6878 6879 static rfs4_chkseq_t 6880 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, 6881 nfs_resop4 *resop) 6882 { 6883 rfs4_chkseq_t rc; 6884 6885 rfs4_dbe_lock(op->dbe); 6886 rc = rfs4_check_seqid(op->open_seqid, op->reply, 6887 olo_seqid, resop, FALSE); 6888 rfs4_dbe_unlock(op->dbe); 6889 6890 return (rc); 6891 } 6892 6893 static rfs4_chkseq_t 6894 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lp, nfs_resop4 *resop) 6895 { 6896 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 6897 6898 rfs4_dbe_lock(lp->dbe); 6899 if (!lp->skip_seqid_check) 6900 rc = rfs4_check_seqid(lp->seqid, lp->reply, seqid, resop, TRUE); 6901 rfs4_dbe_unlock(lp->dbe); 6902 6903 return (rc); 6904 } 6905 6906 static void 6907 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 6908 struct svc_req *req, struct compound_state *cs) 6909 { 6910 OPEN4args *args = &argop->nfs_argop4_u.opopen; 6911 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 6912 open_owner4 *owner = &args->owner; 6913 open_claim_type4 claim = args->claim; 6914 rfs4_client_t *cp; 6915 rfs4_openowner_t *oo; 6916 bool_t create; 6917 bool_t replay = FALSE; 6918 int can_reclaim; 6919 6920 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 6921 OPEN4args *, args); 6922 6923 if (cs->vp == NULL) { 6924 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 6925 goto end; 6926 } 6927 6928 /* 6929 * Need to check clientid and lease expiration first based on 6930 * error ordering and incrementing sequence id. 6931 */ 6932 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 6933 if (cp == NULL) { 6934 *cs->statusp = resp->status = 6935 rfs4_check_clientid(&owner->clientid, 0); 6936 goto end; 6937 } 6938 6939 if (rfs4_lease_expired(cp)) { 6940 rfs4_client_close(cp); 6941 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 6942 goto end; 6943 } 6944 can_reclaim = cp->can_reclaim; 6945 6946 /* 6947 * Find the open_owner for use from this point forward. Take 6948 * care in updating the sequence id based on the type of error 6949 * being returned. 6950 */ 6951 retry: 6952 create = TRUE; 6953 oo = rfs4_findopenowner(owner, &create, args->seqid); 6954 if (oo == NULL) { 6955 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 6956 rfs4_client_rele(cp); 6957 goto end; 6958 } 6959 6960 /* Hold off access to the sequence space while the open is done */ 6961 rfs4_sw_enter(&oo->oo_sw); 6962 6963 /* 6964 * If the open_owner existed before at the server, then check 6965 * the sequence id. 6966 */ 6967 if (!create && !oo->postpone_confirm) { 6968 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 6969 case NFS4_CHKSEQ_BAD: 6970 if ((args->seqid > oo->open_seqid) && 6971 oo->need_confirm) { 6972 rfs4_free_opens(oo, TRUE, FALSE); 6973 rfs4_sw_exit(&oo->oo_sw); 6974 rfs4_openowner_rele(oo); 6975 goto retry; 6976 } 6977 resp->status = NFS4ERR_BAD_SEQID; 6978 goto out; 6979 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 6980 replay = TRUE; 6981 goto out; 6982 default: 6983 break; 6984 } 6985 6986 /* 6987 * Sequence was ok and open owner exists 6988 * check to see if we have yet to see an 6989 * open_confirm. 6990 */ 6991 if (oo->need_confirm) { 6992 rfs4_free_opens(oo, TRUE, FALSE); 6993 rfs4_sw_exit(&oo->oo_sw); 6994 rfs4_openowner_rele(oo); 6995 goto retry; 6996 } 6997 } 6998 /* Grace only applies to regular-type OPENs */ 6999 if (rfs4_clnt_in_grace(cp) && 7000 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7001 *cs->statusp = resp->status = NFS4ERR_GRACE; 7002 goto out; 7003 } 7004 7005 /* 7006 * If previous state at the server existed then can_reclaim 7007 * will be set. If not reply NFS4ERR_NO_GRACE to the 7008 * client. 7009 */ 7010 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7011 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7012 goto out; 7013 } 7014 7015 7016 /* 7017 * Reject the open if the client has missed the grace period 7018 */ 7019 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7020 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7021 goto out; 7022 } 7023 7024 /* Couple of up-front bookkeeping items */ 7025 if (oo->need_confirm) { 7026 /* 7027 * If this is a reclaim OPEN then we should not ask 7028 * for a confirmation of the open_owner per the 7029 * protocol specification. 7030 */ 7031 if (claim == CLAIM_PREVIOUS) 7032 oo->need_confirm = FALSE; 7033 else 7034 resp->rflags |= OPEN4_RESULT_CONFIRM; 7035 } 7036 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7037 7038 /* 7039 * If there is an unshared filesystem mounted on this vnode, 7040 * do not allow to open/create in this directory. 7041 */ 7042 if (vn_ismntpt(cs->vp)) { 7043 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7044 goto out; 7045 } 7046 7047 /* 7048 * access must READ, WRITE, or BOTH. No access is invalid. 7049 * deny can be READ, WRITE, BOTH, or NONE. 7050 * bits not defined for access/deny are invalid. 7051 */ 7052 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7053 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7054 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7055 *cs->statusp = resp->status = NFS4ERR_INVAL; 7056 goto out; 7057 } 7058 7059 7060 /* 7061 * make sure attrset is zero before response is built. 7062 */ 7063 resp->attrset = 0; 7064 7065 switch (claim) { 7066 case CLAIM_NULL: 7067 rfs4_do_opennull(cs, req, args, oo, resp); 7068 break; 7069 case CLAIM_PREVIOUS: 7070 rfs4_do_openprev(cs, req, args, oo, resp); 7071 break; 7072 case CLAIM_DELEGATE_CUR: 7073 rfs4_do_opendelcur(cs, req, args, oo, resp); 7074 break; 7075 case CLAIM_DELEGATE_PREV: 7076 rfs4_do_opendelprev(cs, req, args, oo, resp); 7077 break; 7078 default: 7079 resp->status = NFS4ERR_INVAL; 7080 break; 7081 } 7082 7083 out: 7084 rfs4_client_rele(cp); 7085 7086 /* Catch sequence id handling here to make it a little easier */ 7087 switch (resp->status) { 7088 case NFS4ERR_BADXDR: 7089 case NFS4ERR_BAD_SEQID: 7090 case NFS4ERR_BAD_STATEID: 7091 case NFS4ERR_NOFILEHANDLE: 7092 case NFS4ERR_RESOURCE: 7093 case NFS4ERR_STALE_CLIENTID: 7094 case NFS4ERR_STALE_STATEID: 7095 /* 7096 * The protocol states that if any of these errors are 7097 * being returned, the sequence id should not be 7098 * incremented. Any other return requires an 7099 * increment. 7100 */ 7101 break; 7102 default: 7103 /* Always update the lease in this case */ 7104 rfs4_update_lease(oo->client); 7105 7106 /* Regular response - copy the result */ 7107 if (!replay) 7108 rfs4_update_open_resp(oo, resop, &cs->fh); 7109 7110 /* 7111 * REPLAY case: Only if the previous response was OK 7112 * do we copy the filehandle. If not OK, no 7113 * filehandle to copy. 7114 */ 7115 if (replay == TRUE && 7116 resp->status == NFS4_OK && 7117 oo->reply_fh.nfs_fh4_val) { 7118 /* 7119 * If this is a replay, we must restore the 7120 * current filehandle/vp to that of what was 7121 * returned originally. Try our best to do 7122 * it. 7123 */ 7124 nfs_fh4_fmt_t *fh_fmtp = 7125 (nfs_fh4_fmt_t *)oo->reply_fh.nfs_fh4_val; 7126 7127 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7128 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7129 7130 if (cs->exi == NULL) { 7131 resp->status = NFS4ERR_STALE; 7132 goto finish; 7133 } 7134 7135 VN_RELE(cs->vp); 7136 7137 cs->vp = nfs4_fhtovp(&oo->reply_fh, cs->exi, 7138 &resp->status); 7139 7140 if (cs->vp == NULL) 7141 goto finish; 7142 7143 nfs_fh4_copy(&oo->reply_fh, &cs->fh); 7144 } 7145 7146 /* 7147 * If this was a replay, no need to update the 7148 * sequence id. If the open_owner was not created on 7149 * this pass, then update. The first use of an 7150 * open_owner will not bump the sequence id. 7151 */ 7152 if (replay == FALSE && !create) 7153 rfs4_update_open_sequence(oo); 7154 /* 7155 * If the client is receiving an error and the 7156 * open_owner needs to be confirmed, there is no way 7157 * to notify the client of this fact ignoring the fact 7158 * that the server has no method of returning a 7159 * stateid to confirm. Therefore, the server needs to 7160 * mark this open_owner in a way as to avoid the 7161 * sequence id checking the next time the client uses 7162 * this open_owner. 7163 */ 7164 if (resp->status != NFS4_OK && oo->need_confirm) 7165 oo->postpone_confirm = TRUE; 7166 /* 7167 * If OK response then clear the postpone flag and 7168 * reset the sequence id to keep in sync with the 7169 * client. 7170 */ 7171 if (resp->status == NFS4_OK && oo->postpone_confirm) { 7172 oo->postpone_confirm = FALSE; 7173 oo->open_seqid = args->seqid; 7174 } 7175 break; 7176 } 7177 7178 finish: 7179 *cs->statusp = resp->status; 7180 7181 rfs4_sw_exit(&oo->oo_sw); 7182 rfs4_openowner_rele(oo); 7183 7184 end: 7185 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7186 OPEN4res *, resp); 7187 } 7188 7189 /*ARGSUSED*/ 7190 void 7191 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7192 struct svc_req *req, struct compound_state *cs) 7193 { 7194 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7195 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7196 rfs4_state_t *sp; 7197 nfsstat4 status; 7198 7199 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7200 OPEN_CONFIRM4args *, args); 7201 7202 if (cs->vp == NULL) { 7203 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7204 goto out; 7205 } 7206 7207 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7208 if (status != NFS4_OK) { 7209 *cs->statusp = resp->status = status; 7210 goto out; 7211 } 7212 7213 /* Ensure specified filehandle matches */ 7214 if (cs->vp != sp->finfo->vp) { 7215 rfs4_state_rele(sp); 7216 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7217 goto out; 7218 } 7219 7220 /* hold off other access to open_owner while we tinker */ 7221 rfs4_sw_enter(&sp->owner->oo_sw); 7222 7223 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7224 case NFS4_CHECK_STATEID_OKAY: 7225 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7226 resop) != 0) { 7227 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7228 break; 7229 } 7230 /* 7231 * If it is the appropriate stateid and determined to 7232 * be "OKAY" then this means that the stateid does not 7233 * need to be confirmed and the client is in error for 7234 * sending an OPEN_CONFIRM. 7235 */ 7236 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7237 break; 7238 case NFS4_CHECK_STATEID_OLD: 7239 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7240 break; 7241 case NFS4_CHECK_STATEID_BAD: 7242 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7243 break; 7244 case NFS4_CHECK_STATEID_EXPIRED: 7245 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7246 break; 7247 case NFS4_CHECK_STATEID_CLOSED: 7248 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7249 break; 7250 case NFS4_CHECK_STATEID_REPLAY: 7251 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7252 case NFS4_CHKSEQ_OKAY: 7253 /* 7254 * This is replayed stateid; if seqid matches 7255 * next expected, then client is using wrong seqid. 7256 */ 7257 /* fall through */ 7258 case NFS4_CHKSEQ_BAD: 7259 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7260 break; 7261 case NFS4_CHKSEQ_REPLAY: 7262 /* 7263 * Note this case is the duplicate case so 7264 * resp->status is already set. 7265 */ 7266 *cs->statusp = resp->status; 7267 rfs4_update_lease(sp->owner->client); 7268 break; 7269 } 7270 break; 7271 case NFS4_CHECK_STATEID_UNCONFIRMED: 7272 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7273 resop) != NFS4_CHKSEQ_OKAY) { 7274 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7275 break; 7276 } 7277 *cs->statusp = resp->status = NFS4_OK; 7278 7279 next_stateid(&sp->stateid); 7280 resp->open_stateid = sp->stateid.stateid; 7281 sp->owner->need_confirm = FALSE; 7282 rfs4_update_lease(sp->owner->client); 7283 rfs4_update_open_sequence(sp->owner); 7284 rfs4_update_open_resp(sp->owner, resop, NULL); 7285 break; 7286 default: 7287 ASSERT(FALSE); 7288 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7289 break; 7290 } 7291 rfs4_sw_exit(&sp->owner->oo_sw); 7292 rfs4_state_rele(sp); 7293 7294 out: 7295 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7296 OPEN_CONFIRM4res *, resp); 7297 } 7298 7299 /*ARGSUSED*/ 7300 void 7301 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7302 struct svc_req *req, struct compound_state *cs) 7303 { 7304 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7305 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7306 uint32_t access = args->share_access; 7307 uint32_t deny = args->share_deny; 7308 nfsstat4 status; 7309 rfs4_state_t *sp; 7310 rfs4_file_t *fp; 7311 int fflags = 0; 7312 7313 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7314 OPEN_DOWNGRADE4args *, args); 7315 7316 if (cs->vp == NULL) { 7317 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7318 goto out; 7319 } 7320 7321 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7322 if (status != NFS4_OK) { 7323 *cs->statusp = resp->status = status; 7324 goto out; 7325 } 7326 7327 /* Ensure specified filehandle matches */ 7328 if (cs->vp != sp->finfo->vp) { 7329 rfs4_state_rele(sp); 7330 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7331 goto out; 7332 } 7333 7334 /* hold off other access to open_owner while we tinker */ 7335 rfs4_sw_enter(&sp->owner->oo_sw); 7336 7337 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7338 case NFS4_CHECK_STATEID_OKAY: 7339 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7340 resop) != NFS4_CHKSEQ_OKAY) { 7341 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7342 goto end; 7343 } 7344 break; 7345 case NFS4_CHECK_STATEID_OLD: 7346 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7347 goto end; 7348 case NFS4_CHECK_STATEID_BAD: 7349 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7350 goto end; 7351 case NFS4_CHECK_STATEID_EXPIRED: 7352 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7353 goto end; 7354 case NFS4_CHECK_STATEID_CLOSED: 7355 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7356 goto end; 7357 case NFS4_CHECK_STATEID_UNCONFIRMED: 7358 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7359 goto end; 7360 case NFS4_CHECK_STATEID_REPLAY: 7361 /* Check the sequence id for the open owner */ 7362 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7363 case NFS4_CHKSEQ_OKAY: 7364 /* 7365 * This is replayed stateid; if seqid matches 7366 * next expected, then client is using wrong seqid. 7367 */ 7368 /* fall through */ 7369 case NFS4_CHKSEQ_BAD: 7370 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7371 goto end; 7372 case NFS4_CHKSEQ_REPLAY: 7373 /* 7374 * Note this case is the duplicate case so 7375 * resp->status is already set. 7376 */ 7377 *cs->statusp = resp->status; 7378 rfs4_update_lease(sp->owner->client); 7379 goto end; 7380 } 7381 break; 7382 default: 7383 ASSERT(FALSE); 7384 break; 7385 } 7386 7387 rfs4_dbe_lock(sp->dbe); 7388 /* 7389 * Check that the new access modes and deny modes are valid. 7390 * Check that no invalid bits are set. 7391 */ 7392 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7393 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7394 *cs->statusp = resp->status = NFS4ERR_INVAL; 7395 rfs4_update_open_sequence(sp->owner); 7396 rfs4_dbe_unlock(sp->dbe); 7397 goto end; 7398 } 7399 7400 /* 7401 * The new modes must be a subset of the current modes and 7402 * the access must specify at least one mode. To test that 7403 * the new mode is a subset of the current modes we bitwise 7404 * AND them together and check that the result equals the new 7405 * mode. For example: 7406 * New mode, access == R and current mode, sp->share_access == RW 7407 * access & sp->share_access == R == access, so the new access mode 7408 * is valid. Consider access == RW, sp->share_access = R 7409 * access & sp->share_access == R != access, so the new access mode 7410 * is invalid. 7411 */ 7412 if ((access & sp->share_access) != access || 7413 (deny & sp->share_deny) != deny || 7414 (access & 7415 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7416 *cs->statusp = resp->status = NFS4ERR_INVAL; 7417 rfs4_update_open_sequence(sp->owner); 7418 rfs4_dbe_unlock(sp->dbe); 7419 goto end; 7420 } 7421 7422 /* 7423 * Release any share locks associated with this stateID. 7424 * Strictly speaking, this violates the spec because the 7425 * spec effectively requires that open downgrade be atomic. 7426 * At present, fs_shrlock does not have this capability. 7427 */ 7428 rfs4_dbe_unlock(sp->dbe); 7429 rfs4_unshare(sp); 7430 rfs4_dbe_lock(sp->dbe); 7431 7432 fp = sp->finfo; 7433 rfs4_dbe_lock(fp->dbe); 7434 7435 /* 7436 * If the current mode has deny read and the new mode 7437 * does not, decrement the number of deny read mode bits 7438 * and if it goes to zero turn off the deny read bit 7439 * on the file. 7440 */ 7441 if ((sp->share_deny & OPEN4_SHARE_DENY_READ) && 7442 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7443 fp->deny_read--; 7444 if (fp->deny_read == 0) 7445 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 7446 } 7447 7448 /* 7449 * If the current mode has deny write and the new mode 7450 * does not, decrement the number of deny write mode bits 7451 * and if it goes to zero turn off the deny write bit 7452 * on the file. 7453 */ 7454 if ((sp->share_deny & OPEN4_SHARE_DENY_WRITE) && 7455 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7456 fp->deny_write--; 7457 if (fp->deny_write == 0) 7458 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7459 } 7460 7461 /* 7462 * If the current mode has access read and the new mode 7463 * does not, decrement the number of access read mode bits 7464 * and if it goes to zero turn off the access read bit 7465 * on the file. set fflags to FREAD for the call to 7466 * vn_open_downgrade(). 7467 */ 7468 if ((sp->share_access & OPEN4_SHARE_ACCESS_READ) && 7469 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7470 fp->access_read--; 7471 if (fp->access_read == 0) 7472 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7473 fflags |= FREAD; 7474 } 7475 7476 /* 7477 * If the current mode has access write and the new mode 7478 * does not, decrement the number of access write mode bits 7479 * and if it goes to zero turn off the access write bit 7480 * on the file. set fflags to FWRITE for the call to 7481 * vn_open_downgrade(). 7482 */ 7483 if ((sp->share_access & OPEN4_SHARE_ACCESS_WRITE) && 7484 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7485 fp->access_write--; 7486 if (fp->access_write == 0) 7487 fp->share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7488 fflags |= FWRITE; 7489 } 7490 7491 /* Set the new access and deny modes */ 7492 sp->share_access = access; 7493 sp->share_deny = deny; 7494 /* Check that the file is still accessible */ 7495 ASSERT(fp->share_access); 7496 7497 rfs4_dbe_unlock(fp->dbe); 7498 7499 rfs4_dbe_unlock(sp->dbe); 7500 7501 if ((status = rfs4_share(sp)) != NFS4_OK) { 7502 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7503 rfs4_update_open_sequence(sp->owner); 7504 goto end; 7505 } 7506 7507 /* 7508 * we successfully downgraded the share lock, now we need to downgrade 7509 * the open. it is possible that the downgrade was only for a deny 7510 * mode and we have nothing else to do. 7511 */ 7512 if ((fflags & (FREAD|FWRITE)) != 0) 7513 vn_open_downgrade(cs->vp, fflags); 7514 7515 rfs4_dbe_lock(sp->dbe); 7516 7517 /* Update the stateid */ 7518 next_stateid(&sp->stateid); 7519 resp->open_stateid = sp->stateid.stateid; 7520 7521 rfs4_dbe_unlock(sp->dbe); 7522 7523 *cs->statusp = resp->status = NFS4_OK; 7524 /* Update the lease */ 7525 rfs4_update_lease(sp->owner->client); 7526 /* And the sequence */ 7527 rfs4_update_open_sequence(sp->owner); 7528 rfs4_update_open_resp(sp->owner, resop, NULL); 7529 7530 end: 7531 rfs4_sw_exit(&sp->owner->oo_sw); 7532 rfs4_state_rele(sp); 7533 out: 7534 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7535 OPEN_DOWNGRADE4res *, resp); 7536 } 7537 7538 /* 7539 * The logic behind this function is detailed in the NFSv4 RFC in the 7540 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7541 * that section for explicit guidance to server behavior for 7542 * SETCLIENTID. 7543 */ 7544 void 7545 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7546 struct svc_req *req, struct compound_state *cs) 7547 { 7548 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7549 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7550 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7551 bool_t create = TRUE; 7552 char *addr, *netid; 7553 int len; 7554 7555 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7556 SETCLIENTID4args *, args); 7557 retry: 7558 newcp = cp_confirmed = cp_unconfirmed = NULL; 7559 7560 /* 7561 * In search of an EXISTING client matching the incoming 7562 * request to establish a new client identifier at the server 7563 */ 7564 create = TRUE; 7565 cp = rfs4_findclient(&args->client, &create, NULL); 7566 7567 /* Should never happen */ 7568 ASSERT(cp != NULL); 7569 7570 if (cp == NULL) { 7571 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7572 goto out; 7573 } 7574 7575 /* 7576 * Easiest case. Client identifier is newly created and is 7577 * unconfirmed. Also note that for this case, no other 7578 * entries exist for the client identifier. Nothing else to 7579 * check. Just setup the response and respond. 7580 */ 7581 if (create) { 7582 *cs->statusp = res->status = NFS4_OK; 7583 res->SETCLIENTID4res_u.resok4.clientid = cp->clientid; 7584 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7585 cp->confirm_verf; 7586 /* Setup callback information; CB_NULL confirmation later */ 7587 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 7588 7589 rfs4_client_rele(cp); 7590 goto out; 7591 } 7592 7593 /* 7594 * An existing, confirmed client may exist but it may not have 7595 * been active for at least one lease period. If so, then 7596 * "close" the client and create a new client identifier 7597 */ 7598 if (rfs4_lease_expired(cp)) { 7599 rfs4_client_close(cp); 7600 goto retry; 7601 } 7602 7603 if (cp->need_confirm == TRUE) 7604 cp_unconfirmed = cp; 7605 else 7606 cp_confirmed = cp; 7607 7608 cp = NULL; 7609 7610 /* 7611 * We have a confirmed client, now check for an 7612 * unconfimred entry 7613 */ 7614 if (cp_confirmed) { 7615 /* If creds don't match then client identifier is inuse */ 7616 if (!creds_ok(cp_confirmed->cr_set, req, cs)) { 7617 rfs4_cbinfo_t *cbp; 7618 /* 7619 * Some one else has established this client 7620 * id. Try and say * who they are. We will use 7621 * the call back address supplied by * the 7622 * first client. 7623 */ 7624 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7625 7626 addr = netid = NULL; 7627 7628 cbp = &cp_confirmed->cbinfo; 7629 if (cbp->cb_callback.cb_location.r_addr && 7630 cbp->cb_callback.cb_location.r_netid) { 7631 cb_client4 *cbcp = &cbp->cb_callback; 7632 7633 len = strlen(cbcp->cb_location.r_addr)+1; 7634 addr = kmem_alloc(len, KM_SLEEP); 7635 bcopy(cbcp->cb_location.r_addr, addr, len); 7636 len = strlen(cbcp->cb_location.r_netid)+1; 7637 netid = kmem_alloc(len, KM_SLEEP); 7638 bcopy(cbcp->cb_location.r_netid, netid, len); 7639 } 7640 7641 res->SETCLIENTID4res_u.client_using.r_addr = addr; 7642 res->SETCLIENTID4res_u.client_using.r_netid = netid; 7643 7644 rfs4_client_rele(cp_confirmed); 7645 } 7646 7647 /* 7648 * Confirmed, creds match, and verifier matches; must 7649 * be an update of the callback info 7650 */ 7651 if (cp_confirmed->nfs_client.verifier == 7652 args->client.verifier) { 7653 /* Setup callback information */ 7654 rfs4_client_setcb(cp_confirmed, &args->callback, 7655 args->callback_ident); 7656 7657 /* everything okay -- move ahead */ 7658 *cs->statusp = res->status = NFS4_OK; 7659 res->SETCLIENTID4res_u.resok4.clientid = 7660 cp_confirmed->clientid; 7661 7662 /* update the confirm_verifier and return it */ 7663 rfs4_client_scv_next(cp_confirmed); 7664 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7665 cp_confirmed->confirm_verf; 7666 7667 rfs4_client_rele(cp_confirmed); 7668 goto out; 7669 } 7670 7671 /* 7672 * Creds match but the verifier doesn't. Must search 7673 * for an unconfirmed client that would be replaced by 7674 * this request. 7675 */ 7676 create = FALSE; 7677 cp_unconfirmed = rfs4_findclient(&args->client, &create, 7678 cp_confirmed); 7679 } 7680 7681 /* 7682 * At this point, we have taken care of the brand new client 7683 * struct, INUSE case, update of an existing, and confirmed 7684 * client struct. 7685 */ 7686 7687 /* 7688 * check to see if things have changed while we originally 7689 * picked up the client struct. If they have, then return and 7690 * retry the processing of this SETCLIENTID request. 7691 */ 7692 if (cp_unconfirmed) { 7693 rfs4_dbe_lock(cp_unconfirmed->dbe); 7694 if (!cp_unconfirmed->need_confirm) { 7695 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7696 rfs4_client_rele(cp_unconfirmed); 7697 if (cp_confirmed) 7698 rfs4_client_rele(cp_confirmed); 7699 goto retry; 7700 } 7701 /* do away with the old unconfirmed one */ 7702 rfs4_dbe_invalidate(cp_unconfirmed->dbe); 7703 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7704 rfs4_client_rele(cp_unconfirmed); 7705 cp_unconfirmed = NULL; 7706 } 7707 7708 /* 7709 * This search will temporarily hide the confirmed client 7710 * struct while a new client struct is created as the 7711 * unconfirmed one. 7712 */ 7713 create = TRUE; 7714 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 7715 7716 ASSERT(newcp != NULL); 7717 7718 if (newcp == NULL) { 7719 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7720 rfs4_client_rele(cp_confirmed); 7721 goto out; 7722 } 7723 7724 /* 7725 * If one was not created, then a similar request must be in 7726 * process so release and start over with this one 7727 */ 7728 if (create != TRUE) { 7729 rfs4_client_rele(newcp); 7730 if (cp_confirmed) 7731 rfs4_client_rele(cp_confirmed); 7732 goto retry; 7733 } 7734 7735 *cs->statusp = res->status = NFS4_OK; 7736 res->SETCLIENTID4res_u.resok4.clientid = newcp->clientid; 7737 res->SETCLIENTID4res_u.resok4.setclientid_confirm = newcp->confirm_verf; 7738 /* Setup callback information; CB_NULL confirmation later */ 7739 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 7740 7741 newcp->cp_confirmed = cp_confirmed; 7742 7743 rfs4_client_rele(newcp); 7744 7745 out: 7746 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 7747 SETCLIENTID4res *, res); 7748 } 7749 7750 /*ARGSUSED*/ 7751 void 7752 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7753 struct svc_req *req, struct compound_state *cs) 7754 { 7755 SETCLIENTID_CONFIRM4args *args = 7756 &argop->nfs_argop4_u.opsetclientid_confirm; 7757 SETCLIENTID_CONFIRM4res *res = 7758 &resop->nfs_resop4_u.opsetclientid_confirm; 7759 rfs4_client_t *cp, *cptoclose = NULL; 7760 7761 DTRACE_NFSV4_2(op__setclientid__confirm__start, 7762 struct compound_state *, cs, 7763 SETCLIENTID_CONFIRM4args *, args); 7764 7765 *cs->statusp = res->status = NFS4_OK; 7766 7767 cp = rfs4_findclient_by_id(args->clientid, TRUE); 7768 7769 if (cp == NULL) { 7770 *cs->statusp = res->status = 7771 rfs4_check_clientid(&args->clientid, 1); 7772 goto out; 7773 } 7774 7775 if (!creds_ok(cp, req, cs)) { 7776 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7777 rfs4_client_rele(cp); 7778 goto out; 7779 } 7780 7781 /* If the verifier doesn't match, the record doesn't match */ 7782 if (cp->confirm_verf != args->setclientid_confirm) { 7783 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 7784 rfs4_client_rele(cp); 7785 goto out; 7786 } 7787 7788 rfs4_dbe_lock(cp->dbe); 7789 cp->need_confirm = FALSE; 7790 if (cp->cp_confirmed) { 7791 cptoclose = cp->cp_confirmed; 7792 cptoclose->ss_remove = 1; 7793 cp->cp_confirmed = NULL; 7794 } 7795 7796 /* 7797 * Update the client's associated server instance, if it's changed 7798 * since the client was created. 7799 */ 7800 if (rfs4_servinst(cp) != rfs4_cur_servinst) 7801 rfs4_servinst_assign(cp, rfs4_cur_servinst); 7802 7803 /* 7804 * Record clientid in stable storage. 7805 * Must be done after server instance has been assigned. 7806 */ 7807 rfs4_ss_clid(cp, req); 7808 7809 rfs4_dbe_unlock(cp->dbe); 7810 7811 if (cptoclose) 7812 /* don't need to rele, client_close does it */ 7813 rfs4_client_close(cptoclose); 7814 7815 /* If needed, initiate CB_NULL call for callback path */ 7816 rfs4_deleg_cb_check(cp); 7817 rfs4_update_lease(cp); 7818 7819 /* 7820 * Check to see if client can perform reclaims 7821 */ 7822 rfs4_ss_chkclid(cp); 7823 7824 rfs4_client_rele(cp); 7825 7826 out: 7827 DTRACE_NFSV4_2(op__setclientid__confirm__done, 7828 struct compound_state *, cs, 7829 SETCLIENTID_CONFIRM4 *, res); 7830 } 7831 7832 7833 /*ARGSUSED*/ 7834 void 7835 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 7836 struct svc_req *req, struct compound_state *cs) 7837 { 7838 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 7839 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 7840 rfs4_state_t *sp; 7841 nfsstat4 status; 7842 7843 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 7844 CLOSE4args *, args); 7845 7846 if (cs->vp == NULL) { 7847 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7848 goto out; 7849 } 7850 7851 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 7852 if (status != NFS4_OK) { 7853 *cs->statusp = resp->status = status; 7854 goto out; 7855 } 7856 7857 /* Ensure specified filehandle matches */ 7858 if (cs->vp != sp->finfo->vp) { 7859 rfs4_state_rele(sp); 7860 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7861 goto out; 7862 } 7863 7864 /* hold off other access to open_owner while we tinker */ 7865 rfs4_sw_enter(&sp->owner->oo_sw); 7866 7867 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7868 case NFS4_CHECK_STATEID_OKAY: 7869 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7870 resop) != NFS4_CHKSEQ_OKAY) { 7871 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7872 goto end; 7873 } 7874 break; 7875 case NFS4_CHECK_STATEID_OLD: 7876 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7877 goto end; 7878 case NFS4_CHECK_STATEID_BAD: 7879 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7880 goto end; 7881 case NFS4_CHECK_STATEID_EXPIRED: 7882 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7883 goto end; 7884 case NFS4_CHECK_STATEID_CLOSED: 7885 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7886 goto end; 7887 case NFS4_CHECK_STATEID_UNCONFIRMED: 7888 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7889 goto end; 7890 case NFS4_CHECK_STATEID_REPLAY: 7891 /* Check the sequence id for the open owner */ 7892 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7893 case NFS4_CHKSEQ_OKAY: 7894 /* 7895 * This is replayed stateid; if seqid matches 7896 * next expected, then client is using wrong seqid. 7897 */ 7898 /* FALL THROUGH */ 7899 case NFS4_CHKSEQ_BAD: 7900 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7901 goto end; 7902 case NFS4_CHKSEQ_REPLAY: 7903 /* 7904 * Note this case is the duplicate case so 7905 * resp->status is already set. 7906 */ 7907 *cs->statusp = resp->status; 7908 rfs4_update_lease(sp->owner->client); 7909 goto end; 7910 } 7911 break; 7912 default: 7913 ASSERT(FALSE); 7914 break; 7915 } 7916 7917 rfs4_dbe_lock(sp->dbe); 7918 7919 /* Update the stateid. */ 7920 next_stateid(&sp->stateid); 7921 resp->open_stateid = sp->stateid.stateid; 7922 7923 rfs4_dbe_unlock(sp->dbe); 7924 7925 rfs4_update_lease(sp->owner->client); 7926 rfs4_update_open_sequence(sp->owner); 7927 rfs4_update_open_resp(sp->owner, resop, NULL); 7928 7929 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7930 7931 *cs->statusp = resp->status = status; 7932 7933 end: 7934 rfs4_sw_exit(&sp->owner->oo_sw); 7935 rfs4_state_rele(sp); 7936 out: 7937 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 7938 CLOSE4res *, resp); 7939 } 7940 7941 /* 7942 * Manage the counts on the file struct and close all file locks 7943 */ 7944 /*ARGSUSED*/ 7945 void 7946 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 7947 bool_t close_of_client) 7948 { 7949 rfs4_file_t *fp = sp->finfo; 7950 rfs4_lo_state_t *lsp; 7951 struct shrlock shr; 7952 struct shr_locowner shr_loco; 7953 int fflags, s_access, s_deny; 7954 7955 fflags = s_access = s_deny = 0; 7956 /* 7957 * Decrement the count for each access and deny bit that this 7958 * state has contributed to the file. If the file counts go to zero 7959 * clear the appropriate bit in the appropriate mask. 7960 */ 7961 7962 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 7963 fp->access_read--; 7964 fflags |= FREAD; 7965 s_access |= F_RDACC; 7966 if (fp->access_read == 0) 7967 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7968 } 7969 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 7970 fp->access_write--; 7971 fflags |= FWRITE; 7972 s_access |= F_WRACC; 7973 if (fp->access_write == 0) 7974 fp->share_access &= ~OPEN4_SHARE_ACCESS_WRITE; 7975 } 7976 if (sp->share_deny & OPEN4_SHARE_DENY_READ) { 7977 fp->deny_read--; 7978 s_deny |= F_RDDNY; 7979 if (fp->deny_read == 0) 7980 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 7981 } 7982 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) { 7983 fp->deny_write--; 7984 s_deny |= F_WRDNY; 7985 if (fp->deny_write == 0) 7986 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7987 } 7988 7989 /* 7990 * If this call is part of the larger closing down of client 7991 * state then it is just easier to release all locks 7992 * associated with this client instead of going through each 7993 * individual file and cleaning locks there. 7994 */ 7995 if (close_of_client) { 7996 if (sp->owner->client->unlksys_completed == FALSE && 7997 sp->lockownerlist.next->lsp != NULL && 7998 sp->owner->client->sysidt != LM_NOSYSID) { 7999 /* Is the PxFS kernel module loaded? */ 8000 if (lm_remove_file_locks != NULL) { 8001 int new_sysid; 8002 8003 /* Encode the cluster nodeid in new sysid */ 8004 new_sysid = sp->owner->client->sysidt; 8005 lm_set_nlmid_flk(&new_sysid); 8006 8007 /* 8008 * This PxFS routine removes file locks for a 8009 * client over all nodes of a cluster. 8010 */ 8011 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8012 "lm_remove_file_locks(sysid=0x%x)\n", 8013 new_sysid)); 8014 (*lm_remove_file_locks)(new_sysid); 8015 } else { 8016 struct flock64 flk; 8017 8018 /* Release all locks for this client */ 8019 flk.l_type = F_UNLKSYS; 8020 flk.l_whence = 0; 8021 flk.l_start = 0; 8022 flk.l_len = 0; 8023 flk.l_sysid = sp->owner->client->sysidt; 8024 flk.l_pid = 0; 8025 (void) VOP_FRLOCK(sp->finfo->vp, F_SETLK, &flk, 8026 F_REMOTELOCK | FREAD | FWRITE, 8027 (u_offset_t)0, NULL, CRED(), NULL); 8028 } 8029 8030 sp->owner->client->unlksys_completed = TRUE; 8031 } 8032 } 8033 8034 /* 8035 * Release all locks on this file by this lock owner or at 8036 * least mark the locks as having been released 8037 */ 8038 for (lsp = sp->lockownerlist.next->lsp; lsp != NULL; 8039 lsp = lsp->lockownerlist.next->lsp) { 8040 8041 lsp->locks_cleaned = TRUE; 8042 8043 /* Was this already taken care of above? */ 8044 if (!close_of_client && 8045 sp->owner->client->sysidt != LM_NOSYSID) 8046 (void) cleanlocks(sp->finfo->vp, lsp->locker->pid, 8047 lsp->locker->client->sysidt); 8048 } 8049 8050 /* 8051 * Release any shrlocks associated with this open state ID. 8052 * This must be done before the rfs4_state gets marked closed. 8053 */ 8054 if (sp->owner->client->sysidt != LM_NOSYSID) { 8055 shr.s_access = s_access; 8056 shr.s_deny = s_deny; 8057 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 8058 shr.s_sysid = sp->owner->client->sysidt; 8059 shr_loco.sl_pid = shr.s_pid; 8060 shr_loco.sl_id = shr.s_sysid; 8061 shr.s_owner = (caddr_t)&shr_loco; 8062 shr.s_own_len = sizeof (shr_loco); 8063 (void) vop_shrlock(sp->finfo->vp, F_UNSHARE, &shr, fflags); 8064 } 8065 8066 (void) VOP_CLOSE(fp->vp, fflags, 1, (offset_t)0, cr, NULL); 8067 } 8068 8069 /* 8070 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8071 */ 8072 static nfsstat4 8073 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8074 { 8075 rfs4_lockowner_t *lo; 8076 rfs4_client_t *cp; 8077 uint32_t len; 8078 8079 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8080 if (lo != NULL) { 8081 cp = lo->client; 8082 if (rfs4_lease_expired(cp)) { 8083 rfs4_lockowner_rele(lo); 8084 rfs4_dbe_hold(cp->dbe); 8085 rfs4_client_close(cp); 8086 return (NFS4ERR_EXPIRED); 8087 } 8088 dp->owner.clientid = lo->owner.clientid; 8089 len = lo->owner.owner_len; 8090 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8091 bcopy(lo->owner.owner_val, dp->owner.owner_val, len); 8092 dp->owner.owner_len = len; 8093 rfs4_lockowner_rele(lo); 8094 goto finish; 8095 } 8096 8097 /* 8098 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8099 * of the client id contain the boot time for a NFS4 lock. So we 8100 * fabricate and identity by setting clientid to the sysid, and 8101 * the lock owner to the pid. 8102 */ 8103 dp->owner.clientid = flk->l_sysid; 8104 len = sizeof (pid_t); 8105 dp->owner.owner_len = len; 8106 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8107 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8108 finish: 8109 dp->offset = flk->l_start; 8110 dp->length = flk->l_len; 8111 8112 if (flk->l_type == F_RDLCK) 8113 dp->locktype = READ_LT; 8114 else if (flk->l_type == F_WRLCK) 8115 dp->locktype = WRITE_LT; 8116 else 8117 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8118 8119 return (NFS4_OK); 8120 } 8121 8122 static int 8123 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8124 { 8125 int error; 8126 struct flock64 flk; 8127 int i; 8128 clock_t delaytime; 8129 int cmd; 8130 8131 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8132 retry: 8133 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8134 8135 for (i = 0; i < rfs4_maxlock_tries; i++) { 8136 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8137 error = VOP_FRLOCK(vp, cmd, 8138 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8139 8140 if (error != EAGAIN && error != EACCES) 8141 break; 8142 8143 if (i < rfs4_maxlock_tries - 1) { 8144 delay(delaytime); 8145 delaytime *= 2; 8146 } 8147 } 8148 8149 if (error == EAGAIN || error == EACCES) { 8150 /* Get the owner of the lock */ 8151 flk = *flock; 8152 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8153 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8154 (u_offset_t)0, NULL, cred, NULL) == 0) { 8155 if (flk.l_type == F_UNLCK) { 8156 /* No longer locked, retry */ 8157 goto retry; 8158 } 8159 *flock = flk; 8160 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8161 F_GETLK, &flk); 8162 } 8163 } 8164 8165 return (error); 8166 } 8167 8168 /*ARGSUSED*/ 8169 static nfsstat4 8170 rfs4_do_lock(rfs4_lo_state_t *lp, nfs_lock_type4 locktype, 8171 seqid4 seqid, offset4 offset, 8172 length4 length, cred_t *cred, nfs_resop4 *resop) 8173 { 8174 nfsstat4 status; 8175 rfs4_lockowner_t *lo = lp->locker; 8176 rfs4_state_t *sp = lp->state; 8177 struct flock64 flock; 8178 int16_t ltype; 8179 int flag; 8180 int error; 8181 sysid_t sysid; 8182 LOCK4res *lres; 8183 8184 if (rfs4_lease_expired(lo->client)) { 8185 return (NFS4ERR_EXPIRED); 8186 } 8187 8188 if ((status = rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 8189 return (status); 8190 8191 /* Check for zero length. To lock to end of file use all ones for V4 */ 8192 if (length == 0) 8193 return (NFS4ERR_INVAL); 8194 else if (length == (length4)(~0)) 8195 length = 0; /* Posix to end of file */ 8196 8197 retry: 8198 rfs4_dbe_lock(sp->dbe); 8199 8200 8201 if (resop->resop != OP_LOCKU) { 8202 switch (locktype) { 8203 case READ_LT: 8204 case READW_LT: 8205 if ((sp->share_access 8206 & OPEN4_SHARE_ACCESS_READ) == 0) { 8207 rfs4_dbe_unlock(sp->dbe); 8208 8209 return (NFS4ERR_OPENMODE); 8210 } 8211 ltype = F_RDLCK; 8212 break; 8213 case WRITE_LT: 8214 case WRITEW_LT: 8215 if ((sp->share_access 8216 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8217 rfs4_dbe_unlock(sp->dbe); 8218 8219 return (NFS4ERR_OPENMODE); 8220 } 8221 ltype = F_WRLCK; 8222 break; 8223 } 8224 } else 8225 ltype = F_UNLCK; 8226 8227 flock.l_type = ltype; 8228 flock.l_whence = 0; /* SEEK_SET */ 8229 flock.l_start = offset; 8230 flock.l_len = length; 8231 flock.l_sysid = sysid; 8232 flock.l_pid = lp->locker->pid; 8233 8234 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8235 if (flock.l_len < 0 || flock.l_start < 0) { 8236 rfs4_dbe_unlock(sp->dbe); 8237 return (NFS4ERR_INVAL); 8238 } 8239 8240 /* 8241 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8242 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8243 */ 8244 flag = (int)sp->share_access | F_REMOTELOCK; 8245 8246 error = setlock(sp->finfo->vp, &flock, flag, cred); 8247 if (error == 0) { 8248 rfs4_dbe_lock(lp->dbe); 8249 next_stateid(&lp->lockid); 8250 rfs4_dbe_unlock(lp->dbe); 8251 } 8252 8253 rfs4_dbe_unlock(sp->dbe); 8254 8255 /* 8256 * N.B. We map error values to nfsv4 errors. This is differrent 8257 * than puterrno4 routine. 8258 */ 8259 switch (error) { 8260 case 0: 8261 status = NFS4_OK; 8262 break; 8263 case EAGAIN: 8264 case EACCES: /* Old value */ 8265 /* Can only get here if op is OP_LOCK */ 8266 ASSERT(resop->resop == OP_LOCK); 8267 lres = &resop->nfs_resop4_u.oplock; 8268 status = NFS4ERR_DENIED; 8269 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8270 == NFS4ERR_EXPIRED) 8271 goto retry; 8272 break; 8273 case ENOLCK: 8274 status = NFS4ERR_DELAY; 8275 break; 8276 case EOVERFLOW: 8277 status = NFS4ERR_INVAL; 8278 break; 8279 case EINVAL: 8280 status = NFS4ERR_NOTSUPP; 8281 break; 8282 default: 8283 cmn_err(CE_WARN, "rfs4_do_lock: unexpected errno (%d)", error); 8284 status = NFS4ERR_SERVERFAULT; 8285 break; 8286 } 8287 8288 return (status); 8289 } 8290 8291 /*ARGSUSED*/ 8292 void 8293 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8294 struct svc_req *req, struct compound_state *cs) 8295 { 8296 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8297 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8298 nfsstat4 status; 8299 stateid4 *stateid; 8300 rfs4_lockowner_t *lo; 8301 rfs4_client_t *cp; 8302 rfs4_state_t *sp = NULL; 8303 rfs4_lo_state_t *lsp = NULL; 8304 bool_t ls_sw_held = FALSE; 8305 bool_t create = TRUE; 8306 bool_t lcreate = TRUE; 8307 bool_t dup_lock = FALSE; 8308 int rc; 8309 8310 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8311 LOCK4args *, args); 8312 8313 if (cs->vp == NULL) { 8314 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8315 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8316 cs, LOCK4res *, resp); 8317 return; 8318 } 8319 8320 if (args->locker.new_lock_owner) { 8321 /* Create a new lockowner for this instance */ 8322 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8323 8324 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8325 8326 stateid = &olo->open_stateid; 8327 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8328 if (status != NFS4_OK) { 8329 NFS4_DEBUG(rfs4_debug, 8330 (CE_NOTE, "Get state failed in lock %d", status)); 8331 *cs->statusp = resp->status = status; 8332 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8333 cs, LOCK4res *, resp); 8334 return; 8335 } 8336 8337 /* Ensure specified filehandle matches */ 8338 if (cs->vp != sp->finfo->vp) { 8339 rfs4_state_rele(sp); 8340 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8341 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8342 cs, LOCK4res *, resp); 8343 return; 8344 } 8345 8346 /* hold off other access to open_owner while we tinker */ 8347 rfs4_sw_enter(&sp->owner->oo_sw); 8348 8349 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8350 case NFS4_CHECK_STATEID_OLD: 8351 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8352 goto end; 8353 case NFS4_CHECK_STATEID_BAD: 8354 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8355 goto end; 8356 case NFS4_CHECK_STATEID_EXPIRED: 8357 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8358 goto end; 8359 case NFS4_CHECK_STATEID_UNCONFIRMED: 8360 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8361 goto end; 8362 case NFS4_CHECK_STATEID_CLOSED: 8363 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8364 goto end; 8365 case NFS4_CHECK_STATEID_OKAY: 8366 case NFS4_CHECK_STATEID_REPLAY: 8367 switch (rfs4_check_olo_seqid(olo->open_seqid, 8368 sp->owner, resop)) { 8369 case NFS4_CHKSEQ_OKAY: 8370 if (rc == NFS4_CHECK_STATEID_OKAY) 8371 break; 8372 /* 8373 * This is replayed stateid; if seqid 8374 * matches next expected, then client 8375 * is using wrong seqid. 8376 */ 8377 /* FALLTHROUGH */ 8378 case NFS4_CHKSEQ_BAD: 8379 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8380 goto end; 8381 case NFS4_CHKSEQ_REPLAY: 8382 /* This is a duplicate LOCK request */ 8383 dup_lock = TRUE; 8384 8385 /* 8386 * For a duplicate we do not want to 8387 * create a new lockowner as it should 8388 * already exist. 8389 * Turn off the lockowner create flag. 8390 */ 8391 lcreate = FALSE; 8392 } 8393 break; 8394 } 8395 8396 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8397 if (lo == NULL) { 8398 NFS4_DEBUG(rfs4_debug, 8399 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8400 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8401 goto end; 8402 } 8403 8404 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8405 if (lsp == NULL) { 8406 rfs4_update_lease(sp->owner->client); 8407 /* 8408 * Only update theh open_seqid if this is not 8409 * a duplicate request 8410 */ 8411 if (dup_lock == FALSE) { 8412 rfs4_update_open_sequence(sp->owner); 8413 } 8414 8415 NFS4_DEBUG(rfs4_debug, 8416 (CE_NOTE, "rfs4_op_lock: no state")); 8417 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8418 rfs4_update_open_resp(sp->owner, resop, NULL); 8419 rfs4_lockowner_rele(lo); 8420 goto end; 8421 } 8422 8423 /* 8424 * This is the new_lock_owner branch and the client is 8425 * supposed to be associating a new lock_owner with 8426 * the open file at this point. If we find that a 8427 * lock_owner/state association already exists and a 8428 * successful LOCK request was returned to the client, 8429 * an error is returned to the client since this is 8430 * not appropriate. The client should be using the 8431 * existing lock_owner branch. 8432 */ 8433 if (dup_lock == FALSE && create == FALSE) { 8434 if (lsp->lock_completed == TRUE) { 8435 *cs->statusp = 8436 resp->status = NFS4ERR_BAD_SEQID; 8437 rfs4_lockowner_rele(lo); 8438 goto end; 8439 } 8440 } 8441 8442 rfs4_update_lease(sp->owner->client); 8443 8444 /* 8445 * Only update theh open_seqid if this is not 8446 * a duplicate request 8447 */ 8448 if (dup_lock == FALSE) { 8449 rfs4_update_open_sequence(sp->owner); 8450 } 8451 8452 /* 8453 * If this is a duplicate lock request, just copy the 8454 * previously saved reply and return. 8455 */ 8456 if (dup_lock == TRUE) { 8457 /* verify that lock_seqid's match */ 8458 if (lsp->seqid != olo->lock_seqid) { 8459 NFS4_DEBUG(rfs4_debug, 8460 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8461 "lsp->seqid=%d old->seqid=%d", 8462 lsp->seqid, olo->lock_seqid)); 8463 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8464 } else { 8465 rfs4_copy_reply(resop, lsp->reply); 8466 /* 8467 * Make sure to copy the just 8468 * retrieved reply status into the 8469 * overall compound status 8470 */ 8471 *cs->statusp = resp->status; 8472 } 8473 rfs4_lockowner_rele(lo); 8474 goto end; 8475 } 8476 8477 rfs4_dbe_lock(lsp->dbe); 8478 8479 /* Make sure to update the lock sequence id */ 8480 lsp->seqid = olo->lock_seqid; 8481 8482 NFS4_DEBUG(rfs4_debug, 8483 (CE_NOTE, "Lock seqid established as %d", lsp->seqid)); 8484 8485 /* 8486 * This is used to signify the newly created lockowner 8487 * stateid and its sequence number. The checks for 8488 * sequence number and increment don't occur on the 8489 * very first lock request for a lockowner. 8490 */ 8491 lsp->skip_seqid_check = TRUE; 8492 8493 /* hold off other access to lsp while we tinker */ 8494 rfs4_sw_enter(&lsp->ls_sw); 8495 ls_sw_held = TRUE; 8496 8497 rfs4_dbe_unlock(lsp->dbe); 8498 8499 rfs4_lockowner_rele(lo); 8500 } else { 8501 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8502 /* get lsp and hold the lock on the underlying file struct */ 8503 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8504 != NFS4_OK) { 8505 *cs->statusp = resp->status = status; 8506 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8507 cs, LOCK4res *, resp); 8508 return; 8509 } 8510 create = FALSE; /* We didn't create lsp */ 8511 8512 /* Ensure specified filehandle matches */ 8513 if (cs->vp != lsp->state->finfo->vp) { 8514 rfs4_lo_state_rele(lsp, TRUE); 8515 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8516 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8517 cs, LOCK4res *, resp); 8518 return; 8519 } 8520 8521 /* hold off other access to lsp while we tinker */ 8522 rfs4_sw_enter(&lsp->ls_sw); 8523 ls_sw_held = TRUE; 8524 8525 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8526 /* 8527 * The stateid looks like it was okay (expected to be 8528 * the next one) 8529 */ 8530 case NFS4_CHECK_STATEID_OKAY: 8531 /* 8532 * The sequence id is now checked. Determine 8533 * if this is a replay or if it is in the 8534 * expected (next) sequence. In the case of a 8535 * replay, there are two replay conditions 8536 * that may occur. The first is the normal 8537 * condition where a LOCK is done with a 8538 * NFS4_OK response and the stateid is 8539 * updated. That case is handled below when 8540 * the stateid is identified as a REPLAY. The 8541 * second is the case where an error is 8542 * returned, like NFS4ERR_DENIED, and the 8543 * sequence number is updated but the stateid 8544 * is not updated. This second case is dealt 8545 * with here. So it may seem odd that the 8546 * stateid is okay but the sequence id is a 8547 * replay but it is okay. 8548 */ 8549 switch (rfs4_check_lock_seqid( 8550 args->locker.locker4_u.lock_owner.lock_seqid, 8551 lsp, resop)) { 8552 case NFS4_CHKSEQ_REPLAY: 8553 if (resp->status != NFS4_OK) { 8554 /* 8555 * Here is our replay and need 8556 * to verify that the last 8557 * response was an error. 8558 */ 8559 *cs->statusp = resp->status; 8560 goto end; 8561 } 8562 /* 8563 * This is done since the sequence id 8564 * looked like a replay but it didn't 8565 * pass our check so a BAD_SEQID is 8566 * returned as a result. 8567 */ 8568 /*FALLTHROUGH*/ 8569 case NFS4_CHKSEQ_BAD: 8570 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8571 goto end; 8572 case NFS4_CHKSEQ_OKAY: 8573 /* Everything looks okay move ahead */ 8574 break; 8575 } 8576 break; 8577 case NFS4_CHECK_STATEID_OLD: 8578 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8579 goto end; 8580 case NFS4_CHECK_STATEID_BAD: 8581 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8582 goto end; 8583 case NFS4_CHECK_STATEID_EXPIRED: 8584 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8585 goto end; 8586 case NFS4_CHECK_STATEID_CLOSED: 8587 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8588 goto end; 8589 case NFS4_CHECK_STATEID_REPLAY: 8590 switch (rfs4_check_lock_seqid( 8591 args->locker.locker4_u.lock_owner.lock_seqid, 8592 lsp, resop)) { 8593 case NFS4_CHKSEQ_OKAY: 8594 /* 8595 * This is a replayed stateid; if 8596 * seqid matches the next expected, 8597 * then client is using wrong seqid. 8598 */ 8599 case NFS4_CHKSEQ_BAD: 8600 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8601 goto end; 8602 case NFS4_CHKSEQ_REPLAY: 8603 rfs4_update_lease(lsp->locker->client); 8604 *cs->statusp = status = resp->status; 8605 goto end; 8606 } 8607 break; 8608 default: 8609 ASSERT(FALSE); 8610 break; 8611 } 8612 8613 rfs4_update_lock_sequence(lsp); 8614 rfs4_update_lease(lsp->locker->client); 8615 } 8616 8617 /* 8618 * NFS4 only allows locking on regular files, so 8619 * verify type of object. 8620 */ 8621 if (cs->vp->v_type != VREG) { 8622 if (cs->vp->v_type == VDIR) 8623 status = NFS4ERR_ISDIR; 8624 else 8625 status = NFS4ERR_INVAL; 8626 goto out; 8627 } 8628 8629 cp = lsp->state->owner->client; 8630 8631 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 8632 status = NFS4ERR_GRACE; 8633 goto out; 8634 } 8635 8636 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->can_reclaim) { 8637 status = NFS4ERR_NO_GRACE; 8638 goto out; 8639 } 8640 8641 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 8642 status = NFS4ERR_NO_GRACE; 8643 goto out; 8644 } 8645 8646 if (lsp->state->finfo->dinfo->dtype == OPEN_DELEGATE_WRITE) 8647 cs->deleg = TRUE; 8648 8649 status = rfs4_do_lock(lsp, args->locktype, 8650 args->locker.locker4_u.lock_owner.lock_seqid, 8651 args->offset, args->length, cs->cr, resop); 8652 8653 out: 8654 lsp->skip_seqid_check = FALSE; 8655 8656 *cs->statusp = resp->status = status; 8657 8658 if (status == NFS4_OK) { 8659 resp->LOCK4res_u.lock_stateid = lsp->lockid.stateid; 8660 lsp->lock_completed = TRUE; 8661 } 8662 /* 8663 * Only update the "OPEN" response here if this was a new 8664 * lock_owner 8665 */ 8666 if (sp) 8667 rfs4_update_open_resp(sp->owner, resop, NULL); 8668 8669 rfs4_update_lock_resp(lsp, resop); 8670 8671 end: 8672 if (lsp) { 8673 if (ls_sw_held) 8674 rfs4_sw_exit(&lsp->ls_sw); 8675 /* 8676 * If an sp obtained, then the lsp does not represent 8677 * a lock on the file struct. 8678 */ 8679 if (sp != NULL) 8680 rfs4_lo_state_rele(lsp, FALSE); 8681 else 8682 rfs4_lo_state_rele(lsp, TRUE); 8683 } 8684 if (sp) { 8685 rfs4_sw_exit(&sp->owner->oo_sw); 8686 rfs4_state_rele(sp); 8687 } 8688 8689 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 8690 LOCK4res *, resp); 8691 } 8692 8693 /* free function for LOCK/LOCKT */ 8694 static void 8695 lock_denied_free(nfs_resop4 *resop) 8696 { 8697 LOCK4denied *dp = NULL; 8698 8699 switch (resop->resop) { 8700 case OP_LOCK: 8701 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 8702 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 8703 break; 8704 case OP_LOCKT: 8705 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 8706 dp = &resop->nfs_resop4_u.oplockt.denied; 8707 break; 8708 default: 8709 break; 8710 } 8711 8712 if (dp) 8713 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 8714 } 8715 8716 /*ARGSUSED*/ 8717 void 8718 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 8719 struct svc_req *req, struct compound_state *cs) 8720 { 8721 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 8722 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 8723 nfsstat4 status; 8724 stateid4 *stateid = &args->lock_stateid; 8725 rfs4_lo_state_t *lsp; 8726 8727 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 8728 LOCKU4args *, args); 8729 8730 if (cs->vp == NULL) { 8731 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8732 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8733 LOCKU4res *, resp); 8734 return; 8735 } 8736 8737 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 8738 *cs->statusp = resp->status = status; 8739 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8740 LOCKU4res *, resp); 8741 return; 8742 } 8743 8744 /* Ensure specified filehandle matches */ 8745 if (cs->vp != lsp->state->finfo->vp) { 8746 rfs4_lo_state_rele(lsp, TRUE); 8747 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8748 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8749 LOCKU4res *, resp); 8750 return; 8751 } 8752 8753 /* hold off other access to lsp while we tinker */ 8754 rfs4_sw_enter(&lsp->ls_sw); 8755 8756 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8757 case NFS4_CHECK_STATEID_OKAY: 8758 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 8759 != NFS4_CHKSEQ_OKAY) { 8760 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8761 goto end; 8762 } 8763 break; 8764 case NFS4_CHECK_STATEID_OLD: 8765 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8766 goto end; 8767 case NFS4_CHECK_STATEID_BAD: 8768 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8769 goto end; 8770 case NFS4_CHECK_STATEID_EXPIRED: 8771 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8772 goto end; 8773 case NFS4_CHECK_STATEID_CLOSED: 8774 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8775 goto end; 8776 case NFS4_CHECK_STATEID_REPLAY: 8777 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 8778 case NFS4_CHKSEQ_OKAY: 8779 /* 8780 * This is a replayed stateid; if 8781 * seqid matches the next expected, 8782 * then client is using wrong seqid. 8783 */ 8784 case NFS4_CHKSEQ_BAD: 8785 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8786 goto end; 8787 case NFS4_CHKSEQ_REPLAY: 8788 rfs4_update_lease(lsp->locker->client); 8789 *cs->statusp = status = resp->status; 8790 goto end; 8791 } 8792 break; 8793 default: 8794 ASSERT(FALSE); 8795 break; 8796 } 8797 8798 rfs4_update_lock_sequence(lsp); 8799 rfs4_update_lease(lsp->locker->client); 8800 8801 /* 8802 * NFS4 only allows locking on regular files, so 8803 * verify type of object. 8804 */ 8805 if (cs->vp->v_type != VREG) { 8806 if (cs->vp->v_type == VDIR) 8807 status = NFS4ERR_ISDIR; 8808 else 8809 status = NFS4ERR_INVAL; 8810 goto out; 8811 } 8812 8813 if (rfs4_clnt_in_grace(lsp->state->owner->client)) { 8814 status = NFS4ERR_GRACE; 8815 goto out; 8816 } 8817 8818 status = rfs4_do_lock(lsp, args->locktype, 8819 args->seqid, args->offset, args->length, cs->cr, resop); 8820 8821 out: 8822 *cs->statusp = resp->status = status; 8823 8824 if (status == NFS4_OK) 8825 resp->lock_stateid = lsp->lockid.stateid; 8826 8827 rfs4_update_lock_resp(lsp, resop); 8828 8829 end: 8830 rfs4_sw_exit(&lsp->ls_sw); 8831 rfs4_lo_state_rele(lsp, TRUE); 8832 8833 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8834 LOCKU4res *, resp); 8835 } 8836 8837 /* 8838 * LOCKT is a best effort routine, the client can not be guaranteed that 8839 * the status return is still in effect by the time the reply is received. 8840 * They are numerous race conditions in this routine, but we are not required 8841 * and can not be accurate. 8842 */ 8843 /*ARGSUSED*/ 8844 void 8845 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 8846 struct svc_req *req, struct compound_state *cs) 8847 { 8848 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 8849 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 8850 rfs4_lockowner_t *lo; 8851 rfs4_client_t *cp; 8852 bool_t create = FALSE; 8853 struct flock64 flk; 8854 int error; 8855 int flag = FREAD | FWRITE; 8856 int ltype; 8857 length4 posix_length; 8858 sysid_t sysid; 8859 pid_t pid; 8860 8861 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 8862 LOCKT4args *, args); 8863 8864 if (cs->vp == NULL) { 8865 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8866 goto out; 8867 } 8868 8869 /* 8870 * NFS4 only allows locking on regular files, so 8871 * verify type of object. 8872 */ 8873 if (cs->vp->v_type != VREG) { 8874 if (cs->vp->v_type == VDIR) 8875 *cs->statusp = resp->status = NFS4ERR_ISDIR; 8876 else 8877 *cs->statusp = resp->status = NFS4ERR_INVAL; 8878 goto out; 8879 } 8880 8881 /* 8882 * Check out the clientid to ensure the server knows about it 8883 * so that we correctly inform the client of a server reboot. 8884 */ 8885 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 8886 == NULL) { 8887 *cs->statusp = resp->status = 8888 rfs4_check_clientid(&args->owner.clientid, 0); 8889 goto out; 8890 } 8891 if (rfs4_lease_expired(cp)) { 8892 rfs4_client_close(cp); 8893 /* 8894 * Protocol doesn't allow returning NFS4ERR_STALE as 8895 * other operations do on this check so STALE_CLIENTID 8896 * is returned instead 8897 */ 8898 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 8899 goto out; 8900 } 8901 8902 if (rfs4_clnt_in_grace(cp)) { 8903 *cs->statusp = resp->status = NFS4ERR_GRACE; 8904 goto out; 8905 } 8906 rfs4_client_rele(cp); 8907 8908 resp->status = NFS4_OK; 8909 8910 switch (args->locktype) { 8911 case READ_LT: 8912 case READW_LT: 8913 ltype = F_RDLCK; 8914 break; 8915 case WRITE_LT: 8916 case WRITEW_LT: 8917 ltype = F_WRLCK; 8918 break; 8919 } 8920 8921 posix_length = args->length; 8922 /* Check for zero length. To lock to end of file use all ones for V4 */ 8923 if (posix_length == 0) { 8924 *cs->statusp = resp->status = NFS4ERR_INVAL; 8925 goto out; 8926 } else if (posix_length == (length4)(~0)) { 8927 posix_length = 0; /* Posix to end of file */ 8928 } 8929 8930 /* Find or create a lockowner */ 8931 lo = rfs4_findlockowner(&args->owner, &create); 8932 8933 if (lo) { 8934 pid = lo->pid; 8935 if ((resp->status = 8936 rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 8937 goto err; 8938 } else { 8939 pid = 0; 8940 sysid = lockt_sysid; 8941 } 8942 retry: 8943 flk.l_type = ltype; 8944 flk.l_whence = 0; /* SEEK_SET */ 8945 flk.l_start = args->offset; 8946 flk.l_len = posix_length; 8947 flk.l_sysid = sysid; 8948 flk.l_pid = pid; 8949 flag |= F_REMOTELOCK; 8950 8951 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 8952 8953 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8954 if (flk.l_len < 0 || flk.l_start < 0) { 8955 resp->status = NFS4ERR_INVAL; 8956 goto err; 8957 } 8958 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 8959 NULL, cs->cr, NULL); 8960 8961 /* 8962 * N.B. We map error values to nfsv4 errors. This is differrent 8963 * than puterrno4 routine. 8964 */ 8965 switch (error) { 8966 case 0: 8967 if (flk.l_type == F_UNLCK) 8968 resp->status = NFS4_OK; 8969 else { 8970 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 8971 goto retry; 8972 resp->status = NFS4ERR_DENIED; 8973 } 8974 break; 8975 case EOVERFLOW: 8976 resp->status = NFS4ERR_INVAL; 8977 break; 8978 case EINVAL: 8979 resp->status = NFS4ERR_NOTSUPP; 8980 break; 8981 default: 8982 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 8983 error); 8984 resp->status = NFS4ERR_SERVERFAULT; 8985 break; 8986 } 8987 8988 err: 8989 if (lo) 8990 rfs4_lockowner_rele(lo); 8991 *cs->statusp = resp->status; 8992 out: 8993 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 8994 LOCKT4res *, resp); 8995 } 8996 8997 static int 8998 vop_shrlock(vnode_t *vp, int cmd, struct shrlock *sp, int fflags) 8999 { 9000 int err; 9001 9002 if (cmd == F_UNSHARE && sp->s_deny == 0 && sp->s_access == 0) 9003 return (0); 9004 9005 err = VOP_SHRLOCK(vp, cmd, sp, fflags, CRED(), NULL); 9006 9007 NFS4_DEBUG(rfs4_shrlock_debug, 9008 (CE_NOTE, "rfs4_shrlock %s vp=%p acc=%d dny=%d sysid=%d " 9009 "pid=%d err=%d\n", cmd == F_UNSHARE ? "UNSHR" : "SHARE", 9010 (void *) vp, sp->s_access, sp->s_deny, sp->s_sysid, sp->s_pid, 9011 err)); 9012 9013 return (err); 9014 } 9015 9016 static int 9017 rfs4_shrlock(rfs4_state_t *sp, int cmd) 9018 { 9019 struct shrlock shr; 9020 struct shr_locowner shr_loco; 9021 int fflags; 9022 9023 fflags = shr.s_access = shr.s_deny = 0; 9024 9025 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 9026 fflags |= FREAD; 9027 shr.s_access |= F_RDACC; 9028 } 9029 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 9030 fflags |= FWRITE; 9031 shr.s_access |= F_WRACC; 9032 } 9033 if (sp->share_deny & OPEN4_SHARE_DENY_READ) 9034 shr.s_deny |= F_RDDNY; 9035 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) 9036 shr.s_deny |= F_WRDNY; 9037 9038 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 9039 shr.s_sysid = sp->owner->client->sysidt; 9040 shr_loco.sl_pid = shr.s_pid; 9041 shr_loco.sl_id = shr.s_sysid; 9042 shr.s_owner = (caddr_t)&shr_loco; 9043 shr.s_own_len = sizeof (shr_loco); 9044 return (vop_shrlock(sp->finfo->vp, cmd, &shr, fflags)); 9045 } 9046 9047 static int 9048 rfs4_share(rfs4_state_t *sp) 9049 { 9050 int cmd; 9051 cmd = nbl_need_check(sp->finfo->vp) ? F_SHARE_NBMAND : F_SHARE; 9052 return (rfs4_shrlock(sp, cmd)); 9053 } 9054 9055 void 9056 rfs4_unshare(rfs4_state_t *sp) 9057 { 9058 (void) rfs4_shrlock(sp, F_UNSHARE); 9059 } 9060