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 2008 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 vnode_t *realvp; 1509 char *nm, *lnm; 1510 uint_t len, llen; 1511 int syncval = 0; 1512 struct nfs4_svgetit_arg sarg; 1513 struct nfs4_ntov_table ntov; 1514 struct statvfs64 sb; 1515 nfsstat4 status; 1516 1517 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1518 CREATE4args *, args); 1519 1520 resp->attrset = 0; 1521 1522 if (dvp == NULL) { 1523 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1524 goto out; 1525 } 1526 1527 /* 1528 * If there is an unshared filesystem mounted on this vnode, 1529 * do not allow to create an object in this directory. 1530 */ 1531 if (vn_ismntpt(dvp)) { 1532 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1533 goto out; 1534 } 1535 1536 /* Verify that type is correct */ 1537 switch (args->type) { 1538 case NF4LNK: 1539 case NF4BLK: 1540 case NF4CHR: 1541 case NF4SOCK: 1542 case NF4FIFO: 1543 case NF4DIR: 1544 break; 1545 default: 1546 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1547 goto out; 1548 }; 1549 1550 if (cs->access == CS_ACCESS_DENIED) { 1551 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1552 goto out; 1553 } 1554 if (dvp->v_type != VDIR) { 1555 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1556 goto out; 1557 } 1558 if (!utf8_dir_verify(&args->objname)) { 1559 *cs->statusp = resp->status = NFS4ERR_INVAL; 1560 goto out; 1561 } 1562 1563 if (rdonly4(cs->exi, cs->vp, req)) { 1564 *cs->statusp = resp->status = NFS4ERR_ROFS; 1565 goto out; 1566 } 1567 1568 /* 1569 * Name of newly created object 1570 */ 1571 nm = utf8_to_fn(&args->objname, &len, NULL); 1572 if (nm == NULL) { 1573 *cs->statusp = resp->status = NFS4ERR_INVAL; 1574 goto out; 1575 } 1576 1577 if (len > MAXNAMELEN) { 1578 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1579 kmem_free(nm, len); 1580 goto out; 1581 } 1582 1583 resp->attrset = 0; 1584 1585 sarg.sbp = &sb; 1586 nfs4_ntov_table_init(&ntov); 1587 1588 status = do_rfs4_set_attrs(&resp->attrset, 1589 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1590 1591 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1592 status = NFS4ERR_INVAL; 1593 1594 if (status != NFS4_OK) { 1595 *cs->statusp = resp->status = status; 1596 kmem_free(nm, len); 1597 nfs4_ntov_table_free(&ntov, &sarg); 1598 resp->attrset = 0; 1599 goto out; 1600 } 1601 1602 /* Get "before" change value */ 1603 bva.va_mask = AT_CTIME|AT_SEQ; 1604 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1605 if (error) { 1606 *cs->statusp = resp->status = puterrno4(error); 1607 kmem_free(nm, len); 1608 nfs4_ntov_table_free(&ntov, &sarg); 1609 resp->attrset = 0; 1610 goto out; 1611 } 1612 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1613 1614 vap = sarg.vap; 1615 1616 /* 1617 * Set default initial values for attributes when not specified 1618 * in createattrs. 1619 */ 1620 if ((vap->va_mask & AT_UID) == 0) { 1621 vap->va_uid = crgetuid(cr); 1622 vap->va_mask |= AT_UID; 1623 } 1624 if ((vap->va_mask & AT_GID) == 0) { 1625 vap->va_gid = crgetgid(cr); 1626 vap->va_mask |= AT_GID; 1627 } 1628 1629 vap->va_mask |= AT_TYPE; 1630 switch (args->type) { 1631 case NF4DIR: 1632 vap->va_type = VDIR; 1633 if ((vap->va_mask & AT_MODE) == 0) { 1634 vap->va_mode = 0700; /* default: owner rwx only */ 1635 vap->va_mask |= AT_MODE; 1636 } 1637 error = VOP_MKDIR(dvp, nm, vap, &vp, cr, NULL, 0, NULL); 1638 if (error) 1639 break; 1640 1641 /* 1642 * Get the initial "after" sequence number, if it fails, 1643 * set to zero 1644 */ 1645 iva.va_mask = AT_SEQ; 1646 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1647 iva.va_seq = 0; 1648 break; 1649 case NF4LNK: 1650 vap->va_type = VLNK; 1651 if ((vap->va_mask & AT_MODE) == 0) { 1652 vap->va_mode = 0700; /* default: owner rwx only */ 1653 vap->va_mask |= AT_MODE; 1654 } 1655 1656 /* 1657 * symlink names must be treated as data 1658 */ 1659 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1660 1661 if (lnm == NULL) { 1662 *cs->statusp = resp->status = NFS4ERR_INVAL; 1663 kmem_free(nm, len); 1664 nfs4_ntov_table_free(&ntov, &sarg); 1665 resp->attrset = 0; 1666 goto out; 1667 } 1668 1669 if (llen > MAXPATHLEN) { 1670 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1671 kmem_free(nm, len); 1672 kmem_free(lnm, llen); 1673 nfs4_ntov_table_free(&ntov, &sarg); 1674 resp->attrset = 0; 1675 goto out; 1676 } 1677 1678 error = VOP_SYMLINK(dvp, nm, vap, lnm, cr, NULL, 0); 1679 if (lnm != NULL) 1680 kmem_free(lnm, llen); 1681 if (error) 1682 break; 1683 1684 /* 1685 * Get the initial "after" sequence number, if it fails, 1686 * set to zero 1687 */ 1688 iva.va_mask = AT_SEQ; 1689 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1690 iva.va_seq = 0; 1691 1692 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, 1693 NULL, NULL, NULL); 1694 if (error) 1695 break; 1696 1697 /* 1698 * va_seq is not safe over VOP calls, check it again 1699 * if it has changed zero out iva to force atomic = FALSE. 1700 */ 1701 iva2.va_mask = AT_SEQ; 1702 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1703 iva2.va_seq != iva.va_seq) 1704 iva.va_seq = 0; 1705 break; 1706 default: 1707 /* 1708 * probably a special file. 1709 */ 1710 if ((vap->va_mask & AT_MODE) == 0) { 1711 vap->va_mode = 0600; /* default: owner rw only */ 1712 vap->va_mask |= AT_MODE; 1713 } 1714 syncval = FNODSYNC; 1715 /* 1716 * We know this will only generate one VOP call 1717 */ 1718 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, nm); 1719 1720 if (vp == NULL) { 1721 kmem_free(nm, len); 1722 nfs4_ntov_table_free(&ntov, &sarg); 1723 resp->attrset = 0; 1724 goto out; 1725 } 1726 1727 /* 1728 * Get the initial "after" sequence number, if it fails, 1729 * set to zero 1730 */ 1731 iva.va_mask = AT_SEQ; 1732 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1733 iva.va_seq = 0; 1734 1735 break; 1736 } 1737 kmem_free(nm, len); 1738 1739 if (error) { 1740 *cs->statusp = resp->status = puterrno4(error); 1741 } 1742 1743 /* 1744 * Force modified data and metadata out to stable storage. 1745 */ 1746 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1747 1748 if (resp->status != NFS4_OK) { 1749 if (vp != NULL) 1750 VN_RELE(vp); 1751 nfs4_ntov_table_free(&ntov, &sarg); 1752 resp->attrset = 0; 1753 goto out; 1754 } 1755 1756 /* 1757 * Finish setup of cinfo response, "before" value already set. 1758 * Get "after" change value, if it fails, simply return the 1759 * before value. 1760 */ 1761 ava.va_mask = AT_CTIME|AT_SEQ; 1762 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1763 ava.va_ctime = bva.va_ctime; 1764 ava.va_seq = 0; 1765 } 1766 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1767 1768 /* 1769 * True verification that object was created with correct 1770 * attrs is impossible. The attrs could have been changed 1771 * immediately after object creation. If attributes did 1772 * not verify, the only recourse for the server is to 1773 * destroy the object. Maybe if some attrs (like gid) 1774 * are set incorrectly, the object should be destroyed; 1775 * however, seems bad as a default policy. Do we really 1776 * want to destroy an object over one of the times not 1777 * verifying correctly? For these reasons, the server 1778 * currently sets bits in attrset for createattrs 1779 * that were set; however, no verification is done. 1780 * 1781 * vmask_to_nmask accounts for vattr bits set on create 1782 * [do_rfs4_set_attrs() only sets resp bits for 1783 * non-vattr/vfs bits.] 1784 * Mask off any bits set by default so as not to return 1785 * more attrset bits than were requested in createattrs 1786 */ 1787 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1788 resp->attrset &= args->createattrs.attrmask; 1789 nfs4_ntov_table_free(&ntov, &sarg); 1790 1791 error = makefh4(&cs->fh, vp, cs->exi); 1792 if (error) { 1793 *cs->statusp = resp->status = puterrno4(error); 1794 } 1795 1796 /* 1797 * The cinfo.atomic = TRUE only if we got no errors, we have 1798 * non-zero va_seq's, and it has incremented by exactly one 1799 * during the creation and it didn't change during the VOP_LOOKUP 1800 * or VOP_FSYNC. 1801 */ 1802 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1803 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1804 resp->cinfo.atomic = TRUE; 1805 else 1806 resp->cinfo.atomic = FALSE; 1807 1808 /* 1809 * Force modified metadata out to stable storage. 1810 * 1811 * if a underlying vp exists, pass it to VOP_FSYNC 1812 */ 1813 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1814 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1815 else 1816 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1817 1818 if (resp->status != NFS4_OK) { 1819 VN_RELE(vp); 1820 goto out; 1821 } 1822 if (cs->vp) 1823 VN_RELE(cs->vp); 1824 1825 cs->vp = vp; 1826 *cs->statusp = resp->status = NFS4_OK; 1827 out: 1828 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1829 CREATE4res *, resp); 1830 } 1831 1832 /*ARGSUSED*/ 1833 static void 1834 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1835 struct compound_state *cs) 1836 { 1837 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1838 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1839 1840 rfs4_op_inval(argop, resop, req, cs); 1841 1842 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1843 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1844 } 1845 1846 /*ARGSUSED*/ 1847 static void 1848 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1849 struct compound_state *cs) 1850 { 1851 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1852 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1853 rfs4_deleg_state_t *dsp; 1854 nfsstat4 status; 1855 1856 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1857 DELEGRETURN4args *, args); 1858 1859 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1860 resp->status = *cs->statusp = status; 1861 if (status != NFS4_OK) 1862 goto out; 1863 1864 /* Ensure specified filehandle matches */ 1865 if (cs->vp != dsp->finfo->vp) { 1866 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1867 } else 1868 rfs4_return_deleg(dsp, FALSE); 1869 1870 rfs4_update_lease(dsp->client); 1871 1872 rfs4_deleg_state_rele(dsp); 1873 out: 1874 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1875 DELEGRETURN4res *, resp); 1876 } 1877 1878 /* 1879 * Check to see if a given "flavor" is an explicitly shared flavor. 1880 * The assumption of this routine is the "flavor" is already a valid 1881 * flavor in the secinfo list of "exi". 1882 * 1883 * e.g. 1884 * # share -o sec=flavor1 /export 1885 * # share -o sec=flavor2 /export/home 1886 * 1887 * flavor2 is not an explicitly shared flavor for /export, 1888 * however it is in the secinfo list for /export thru the 1889 * server namespace setup. 1890 */ 1891 int 1892 is_exported_sec(int flavor, struct exportinfo *exi) 1893 { 1894 int i; 1895 struct secinfo *sp; 1896 1897 sp = exi->exi_export.ex_secinfo; 1898 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1899 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1900 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1901 return (SEC_REF_EXPORTED(&sp[i])); 1902 } 1903 } 1904 1905 /* Should not reach this point based on the assumption */ 1906 return (0); 1907 } 1908 1909 /* 1910 * Check if the security flavor used in the request matches what is 1911 * required at the export point or at the root pseudo node (exi_root). 1912 * 1913 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1914 * 1915 */ 1916 static int 1917 secinfo_match_or_authnone(struct compound_state *cs) 1918 { 1919 int i; 1920 struct secinfo *sp; 1921 1922 /* 1923 * Check cs->nfsflavor (from the request) against 1924 * the current export data in cs->exi. 1925 */ 1926 sp = cs->exi->exi_export.ex_secinfo; 1927 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1928 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1929 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1930 return (1); 1931 } 1932 1933 return (0); 1934 } 1935 1936 /* 1937 * Check the access authority for the client and return the correct error. 1938 */ 1939 nfsstat4 1940 call_checkauth4(struct compound_state *cs, struct svc_req *req) 1941 { 1942 int authres; 1943 1944 /* 1945 * First, check if the security flavor used in the request 1946 * are among the flavors set in the server namespace. 1947 */ 1948 if (!secinfo_match_or_authnone(cs)) { 1949 *cs->statusp = NFS4ERR_WRONGSEC; 1950 return (*cs->statusp); 1951 } 1952 1953 authres = checkauth4(cs, req); 1954 1955 if (authres > 0) { 1956 *cs->statusp = NFS4_OK; 1957 if (! (cs->access & CS_ACCESS_LIMITED)) 1958 cs->access = CS_ACCESS_OK; 1959 } else if (authres == 0) { 1960 *cs->statusp = NFS4ERR_ACCESS; 1961 } else if (authres == -2) { 1962 *cs->statusp = NFS4ERR_WRONGSEC; 1963 } else { 1964 *cs->statusp = NFS4ERR_DELAY; 1965 } 1966 return (*cs->statusp); 1967 } 1968 1969 /* 1970 * bitmap4_to_attrmask is called by getattr and readdir. 1971 * It sets up the vattr mask and determines whether vfsstat call is needed 1972 * based on the input bitmap. 1973 * Returns nfsv4 status. 1974 */ 1975 static nfsstat4 1976 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 1977 { 1978 int i; 1979 uint_t va_mask; 1980 struct statvfs64 *sbp = sargp->sbp; 1981 1982 sargp->sbp = NULL; 1983 sargp->flag = 0; 1984 sargp->rdattr_error = NFS4_OK; 1985 sargp->mntdfid_set = FALSE; 1986 if (sargp->cs->vp) 1987 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 1988 FH4_ATTRDIR | FH4_NAMEDATTR); 1989 else 1990 sargp->xattr = 0; 1991 1992 /* 1993 * Set rdattr_error_req to true if return error per 1994 * failed entry rather than fail the readdir. 1995 */ 1996 if (breq & FATTR4_RDATTR_ERROR_MASK) 1997 sargp->rdattr_error_req = 1; 1998 else 1999 sargp->rdattr_error_req = 0; 2000 2001 /* 2002 * generate the va_mask 2003 * Handle the easy cases first 2004 */ 2005 switch (breq) { 2006 case NFS4_NTOV_ATTR_MASK: 2007 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2008 return (NFS4_OK); 2009 2010 case NFS4_FS_ATTR_MASK: 2011 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2012 sargp->sbp = sbp; 2013 return (NFS4_OK); 2014 2015 case NFS4_NTOV_ATTR_CACHE_MASK: 2016 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2017 return (NFS4_OK); 2018 2019 case FATTR4_LEASE_TIME_MASK: 2020 sargp->vap->va_mask = 0; 2021 return (NFS4_OK); 2022 2023 default: 2024 va_mask = 0; 2025 for (i = 0; i < nfs4_ntov_map_size; i++) { 2026 if ((breq & nfs4_ntov_map[i].fbit) && 2027 nfs4_ntov_map[i].vbit) 2028 va_mask |= nfs4_ntov_map[i].vbit; 2029 } 2030 2031 /* 2032 * Check is vfsstat is needed 2033 */ 2034 if (breq & NFS4_FS_ATTR_MASK) 2035 sargp->sbp = sbp; 2036 2037 sargp->vap->va_mask = va_mask; 2038 return (NFS4_OK); 2039 } 2040 /* NOTREACHED */ 2041 } 2042 2043 /* 2044 * bitmap4_get_sysattrs is called by getattr and readdir. 2045 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2046 * Returns nfsv4 status. 2047 */ 2048 static nfsstat4 2049 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2050 { 2051 int error; 2052 struct compound_state *cs = sargp->cs; 2053 vnode_t *vp = cs->vp; 2054 2055 if (sargp->sbp != NULL) { 2056 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2057 sargp->sbp = NULL; /* to identify error */ 2058 return (puterrno4(error)); 2059 } 2060 } 2061 2062 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2063 } 2064 2065 static void 2066 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2067 { 2068 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2069 KM_SLEEP); 2070 ntovp->attrcnt = 0; 2071 ntovp->vfsstat = FALSE; 2072 } 2073 2074 static void 2075 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2076 struct nfs4_svgetit_arg *sargp) 2077 { 2078 int i; 2079 union nfs4_attr_u *na; 2080 uint8_t *amap; 2081 2082 /* 2083 * XXX Should do the same checks for whether the bit is set 2084 */ 2085 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2086 i < ntovp->attrcnt; i++, na++, amap++) { 2087 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2088 NFS4ATTR_FREEIT, sargp, na); 2089 } 2090 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2091 /* 2092 * xdr_free for getattr will be done later 2093 */ 2094 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2095 i < ntovp->attrcnt; i++, na++, amap++) { 2096 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2097 } 2098 } 2099 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2100 } 2101 2102 /* 2103 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2104 */ 2105 static nfsstat4 2106 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2107 struct nfs4_svgetit_arg *sargp) 2108 { 2109 int error = 0; 2110 int i, k; 2111 struct nfs4_ntov_table ntov; 2112 XDR xdr; 2113 ulong_t xdr_size; 2114 char *xdr_attrs; 2115 nfsstat4 status = NFS4_OK; 2116 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2117 union nfs4_attr_u *na; 2118 uint8_t *amap; 2119 2120 sargp->op = NFS4ATTR_GETIT; 2121 sargp->flag = 0; 2122 2123 fattrp->attrmask = 0; 2124 /* if no bits requested, then return empty fattr4 */ 2125 if (breq == 0) { 2126 fattrp->attrlist4_len = 0; 2127 fattrp->attrlist4 = NULL; 2128 return (NFS4_OK); 2129 } 2130 2131 /* 2132 * return NFS4ERR_INVAL when client requests write-only attrs 2133 */ 2134 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2135 return (NFS4ERR_INVAL); 2136 2137 nfs4_ntov_table_init(&ntov); 2138 na = ntov.na; 2139 amap = ntov.amap; 2140 2141 /* 2142 * Now loop to get or verify the attrs 2143 */ 2144 for (i = 0; i < nfs4_ntov_map_size; i++) { 2145 if (breq & nfs4_ntov_map[i].fbit) { 2146 if ((*nfs4_ntov_map[i].sv_getit)( 2147 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2148 2149 error = (*nfs4_ntov_map[i].sv_getit)( 2150 NFS4ATTR_GETIT, sargp, na); 2151 2152 /* 2153 * Possible error values: 2154 * >0 if sv_getit failed to 2155 * get the attr; 0 if succeeded; 2156 * <0 if rdattr_error and the 2157 * attribute cannot be returned. 2158 */ 2159 if (error && !(sargp->rdattr_error_req)) 2160 goto done; 2161 /* 2162 * If error then just for entry 2163 */ 2164 if (error == 0) { 2165 fattrp->attrmask |= 2166 nfs4_ntov_map[i].fbit; 2167 *amap++ = 2168 (uint8_t)nfs4_ntov_map[i].nval; 2169 na++; 2170 (ntov.attrcnt)++; 2171 } else if ((error > 0) && 2172 (sargp->rdattr_error == NFS4_OK)) { 2173 sargp->rdattr_error = puterrno4(error); 2174 } 2175 error = 0; 2176 } 2177 } 2178 } 2179 2180 /* 2181 * If rdattr_error was set after the return value for it was assigned, 2182 * update it. 2183 */ 2184 if (prev_rdattr_error != sargp->rdattr_error) { 2185 na = ntov.na; 2186 amap = ntov.amap; 2187 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2188 k = *amap; 2189 if (k < FATTR4_RDATTR_ERROR) { 2190 continue; 2191 } 2192 if ((k == FATTR4_RDATTR_ERROR) && 2193 ((*nfs4_ntov_map[k].sv_getit)( 2194 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2195 2196 (void) (*nfs4_ntov_map[k].sv_getit)( 2197 NFS4ATTR_GETIT, sargp, na); 2198 } 2199 break; 2200 } 2201 } 2202 2203 xdr_size = 0; 2204 na = ntov.na; 2205 amap = ntov.amap; 2206 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2207 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2208 } 2209 2210 fattrp->attrlist4_len = xdr_size; 2211 if (xdr_size) { 2212 /* freed by rfs4_op_getattr_free() */ 2213 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2214 2215 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2216 2217 na = ntov.na; 2218 amap = ntov.amap; 2219 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2220 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2221 cmn_err(CE_WARN, "do_rfs4_op_getattr: xdr " 2222 "encode of attribute %d failed\n", *amap); 2223 status = NFS4ERR_SERVERFAULT; 2224 break; 2225 } 2226 } 2227 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2228 } else { 2229 fattrp->attrlist4 = NULL; 2230 } 2231 done: 2232 2233 nfs4_ntov_table_free(&ntov, sargp); 2234 2235 if (error != 0) 2236 status = puterrno4(error); 2237 2238 return (status); 2239 } 2240 2241 /* ARGSUSED */ 2242 static void 2243 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2244 struct compound_state *cs) 2245 { 2246 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2247 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2248 struct nfs4_svgetit_arg sarg; 2249 struct statvfs64 sb; 2250 nfsstat4 status; 2251 2252 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2253 GETATTR4args *, args); 2254 2255 if (cs->vp == NULL) { 2256 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2257 goto out; 2258 } 2259 2260 if (cs->access == CS_ACCESS_DENIED) { 2261 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2262 goto out; 2263 } 2264 2265 sarg.sbp = &sb; 2266 sarg.cs = cs; 2267 2268 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2269 if (status == NFS4_OK) { 2270 status = bitmap4_get_sysattrs(&sarg); 2271 if (status == NFS4_OK) 2272 status = do_rfs4_op_getattr(args->attr_request, 2273 &resp->obj_attributes, &sarg); 2274 } 2275 *cs->statusp = resp->status = status; 2276 out: 2277 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2278 GETATTR4res *, resp); 2279 } 2280 2281 static void 2282 rfs4_op_getattr_free(nfs_resop4 *resop) 2283 { 2284 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2285 2286 nfs4_fattr4_free(&resp->obj_attributes); 2287 } 2288 2289 /* ARGSUSED */ 2290 static void 2291 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2292 struct compound_state *cs) 2293 { 2294 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2295 2296 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2297 2298 if (cs->vp == NULL) { 2299 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2300 goto out; 2301 } 2302 if (cs->access == CS_ACCESS_DENIED) { 2303 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2304 goto out; 2305 } 2306 2307 resp->object.nfs_fh4_val = 2308 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2309 nfs_fh4_copy(&cs->fh, &resp->object); 2310 *cs->statusp = resp->status = NFS4_OK; 2311 out: 2312 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2313 GETFH4res *, resp); 2314 } 2315 2316 static void 2317 rfs4_op_getfh_free(nfs_resop4 *resop) 2318 { 2319 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2320 2321 if (resp->status == NFS4_OK && 2322 resp->object.nfs_fh4_val != NULL) { 2323 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2324 resp->object.nfs_fh4_val = NULL; 2325 resp->object.nfs_fh4_len = 0; 2326 } 2327 } 2328 2329 /* 2330 * illegal: args: void 2331 * res : status (NFS4ERR_OP_ILLEGAL) 2332 */ 2333 /* ARGSUSED */ 2334 static void 2335 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2336 struct svc_req *req, struct compound_state *cs) 2337 { 2338 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2339 2340 resop->resop = OP_ILLEGAL; 2341 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2342 } 2343 2344 /* 2345 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2346 * res: status. If success - CURRENT_FH unchanged, return change_info 2347 */ 2348 /* ARGSUSED */ 2349 static void 2350 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2351 struct compound_state *cs) 2352 { 2353 LINK4args *args = &argop->nfs_argop4_u.oplink; 2354 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2355 int error; 2356 vnode_t *vp; 2357 vnode_t *dvp; 2358 struct vattr bdva, idva, adva; 2359 char *nm; 2360 uint_t len; 2361 2362 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2363 LINK4args *, args); 2364 2365 /* SAVED_FH: source object */ 2366 vp = cs->saved_vp; 2367 if (vp == NULL) { 2368 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2369 goto out; 2370 } 2371 2372 /* CURRENT_FH: target directory */ 2373 dvp = cs->vp; 2374 if (dvp == NULL) { 2375 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2376 goto out; 2377 } 2378 2379 /* 2380 * If there is a non-shared filesystem mounted on this vnode, 2381 * do not allow to link any file in this directory. 2382 */ 2383 if (vn_ismntpt(dvp)) { 2384 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2385 goto out; 2386 } 2387 2388 if (cs->access == CS_ACCESS_DENIED) { 2389 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2390 goto out; 2391 } 2392 2393 /* Check source object's type validity */ 2394 if (vp->v_type == VDIR) { 2395 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2396 goto out; 2397 } 2398 2399 /* Check target directory's type */ 2400 if (dvp->v_type != VDIR) { 2401 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2402 goto out; 2403 } 2404 2405 if (cs->saved_exi != cs->exi) { 2406 *cs->statusp = resp->status = NFS4ERR_XDEV; 2407 goto out; 2408 } 2409 2410 if (!utf8_dir_verify(&args->newname)) { 2411 *cs->statusp = resp->status = NFS4ERR_INVAL; 2412 goto out; 2413 } 2414 2415 nm = utf8_to_fn(&args->newname, &len, NULL); 2416 if (nm == NULL) { 2417 *cs->statusp = resp->status = NFS4ERR_INVAL; 2418 goto out; 2419 } 2420 2421 if (len > MAXNAMELEN) { 2422 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2423 kmem_free(nm, len); 2424 goto out; 2425 } 2426 2427 if (rdonly4(cs->exi, cs->vp, req)) { 2428 *cs->statusp = resp->status = NFS4ERR_ROFS; 2429 kmem_free(nm, len); 2430 goto out; 2431 } 2432 2433 /* Get "before" change value */ 2434 bdva.va_mask = AT_CTIME|AT_SEQ; 2435 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2436 if (error) { 2437 *cs->statusp = resp->status = puterrno4(error); 2438 kmem_free(nm, len); 2439 goto out; 2440 } 2441 2442 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2443 2444 error = VOP_LINK(dvp, vp, nm, cs->cr, NULL, 0); 2445 2446 kmem_free(nm, len); 2447 2448 /* 2449 * Get the initial "after" sequence number, if it fails, set to zero 2450 */ 2451 idva.va_mask = AT_SEQ; 2452 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2453 idva.va_seq = 0; 2454 2455 /* 2456 * Force modified data and metadata out to stable storage. 2457 */ 2458 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2459 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2460 2461 if (error) { 2462 *cs->statusp = resp->status = puterrno4(error); 2463 goto out; 2464 } 2465 2466 /* 2467 * Get "after" change value, if it fails, simply return the 2468 * before value. 2469 */ 2470 adva.va_mask = AT_CTIME|AT_SEQ; 2471 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2472 adva.va_ctime = bdva.va_ctime; 2473 adva.va_seq = 0; 2474 } 2475 2476 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2477 2478 /* 2479 * The cinfo.atomic = TRUE only if we have 2480 * non-zero va_seq's, and it has incremented by exactly one 2481 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2482 */ 2483 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2484 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2485 resp->cinfo.atomic = TRUE; 2486 else 2487 resp->cinfo.atomic = FALSE; 2488 2489 *cs->statusp = resp->status = NFS4_OK; 2490 out: 2491 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2492 LINK4res *, resp); 2493 } 2494 2495 /* 2496 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2497 */ 2498 2499 /* ARGSUSED */ 2500 static nfsstat4 2501 do_rfs4_op_lookup(char *nm, uint_t buflen, struct svc_req *req, 2502 struct compound_state *cs) 2503 { 2504 int error; 2505 int different_export = 0; 2506 vnode_t *vp, *tvp, *pre_tvp = NULL, *oldvp = NULL; 2507 struct exportinfo *exi = NULL, *pre_exi = NULL; 2508 nfsstat4 stat; 2509 fid_t fid; 2510 int attrdir, dotdot, walk; 2511 bool_t is_newvp = FALSE; 2512 2513 if (cs->vp->v_flag & V_XATTRDIR) { 2514 attrdir = 1; 2515 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2516 } else { 2517 attrdir = 0; 2518 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2519 } 2520 2521 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2522 2523 /* 2524 * If dotdotting, then need to check whether it's 2525 * above the root of a filesystem, or above an 2526 * export point. 2527 */ 2528 if (dotdot) { 2529 2530 /* 2531 * If dotdotting at the root of a filesystem, then 2532 * need to traverse back to the mounted-on filesystem 2533 * and do the dotdot lookup there. 2534 */ 2535 if (cs->vp->v_flag & VROOT) { 2536 2537 /* 2538 * If at the system root, then can 2539 * go up no further. 2540 */ 2541 if (VN_CMP(cs->vp, rootdir)) 2542 return (puterrno4(ENOENT)); 2543 2544 /* 2545 * Traverse back to the mounted-on filesystem 2546 */ 2547 cs->vp = untraverse(cs->vp); 2548 2549 /* 2550 * Set the different_export flag so we remember 2551 * to pick up a new exportinfo entry for 2552 * this new filesystem. 2553 */ 2554 different_export = 1; 2555 } else { 2556 2557 /* 2558 * If dotdotting above an export point then set 2559 * the different_export to get new export info. 2560 */ 2561 different_export = nfs_exported(cs->exi, cs->vp); 2562 } 2563 } 2564 2565 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2566 NULL, NULL, NULL); 2567 if (error) 2568 return (puterrno4(error)); 2569 2570 /* 2571 * If the vnode is in a pseudo filesystem, check whether it is visible. 2572 * 2573 * XXX if the vnode is a symlink and it is not visible in 2574 * a pseudo filesystem, return ENOENT (not following symlink). 2575 * V4 client can not mount such symlink. This is a regression 2576 * from V2/V3. 2577 * 2578 * In the same exported filesystem, if the security flavor used 2579 * is not an explicitly shared flavor, limit the view to the visible 2580 * list entries only. This is not a WRONGSEC case because it's already 2581 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2582 */ 2583 if (!different_export && 2584 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2585 cs->access & CS_ACCESS_LIMITED)) { 2586 if (! nfs_visible(cs->exi, vp, &different_export)) { 2587 VN_RELE(vp); 2588 return (puterrno4(ENOENT)); 2589 } 2590 } 2591 2592 /* 2593 * If it's a mountpoint, then traverse it. 2594 */ 2595 if (vn_ismntpt(vp)) { 2596 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2597 pre_tvp = vp; /* save pre-traversed vnode */ 2598 2599 /* 2600 * hold pre_tvp to counteract rele by traverse. We will 2601 * need pre_tvp below if checkexport4 fails 2602 */ 2603 VN_HOLD(pre_tvp); 2604 tvp = vp; 2605 if ((error = traverse(&tvp)) != 0) { 2606 VN_RELE(vp); 2607 VN_RELE(pre_tvp); 2608 return (puterrno4(error)); 2609 } 2610 vp = tvp; 2611 different_export = 1; 2612 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2613 /* 2614 * The vfsp comparison is to handle the case where 2615 * a LOFS mount is shared. lo_lookup traverses mount points, 2616 * and NFS is unaware of local fs transistions because 2617 * v_vfsmountedhere isn't set. For this special LOFS case, 2618 * the dir and the obj returned by lookup will have different 2619 * vfs ptrs. 2620 */ 2621 different_export = 1; 2622 } 2623 2624 if (different_export) { 2625 2626 bzero(&fid, sizeof (fid)); 2627 fid.fid_len = MAXFIDSZ; 2628 error = vop_fid_pseudo(vp, &fid); 2629 if (error) { 2630 VN_RELE(vp); 2631 if (pre_tvp) 2632 VN_RELE(pre_tvp); 2633 return (puterrno4(error)); 2634 } 2635 2636 if (dotdot) 2637 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2638 else 2639 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2640 2641 if (exi == NULL) { 2642 if (pre_tvp) { 2643 /* 2644 * If this vnode is a mounted-on vnode, 2645 * but the mounted-on file system is not 2646 * exported, send back the filehandle for 2647 * the mounted-on vnode, not the root of 2648 * the mounted-on file system. 2649 */ 2650 VN_RELE(vp); 2651 vp = pre_tvp; 2652 exi = pre_exi; 2653 } else { 2654 VN_RELE(vp); 2655 return (puterrno4(EACCES)); 2656 } 2657 } else if (pre_tvp) { 2658 /* we're done with pre_tvp now. release extra hold */ 2659 VN_RELE(pre_tvp); 2660 } 2661 2662 cs->exi = exi; 2663 2664 /* 2665 * Now we do a checkauth4. The reason is that 2666 * this client/user may not have access to the new 2667 * exported file system, and if he does, 2668 * the client/user may be mapped to a different uid. 2669 * 2670 * We start with a new cr, because the checkauth4 done 2671 * in the PUT*FH operation over wrote the cred's uid, 2672 * gid, etc, and we want the real thing before calling 2673 * checkauth4() 2674 */ 2675 crfree(cs->cr); 2676 cs->cr = crdup(cs->basecr); 2677 2678 if (cs->vp) 2679 oldvp = cs->vp; 2680 cs->vp = vp; 2681 is_newvp = TRUE; 2682 2683 stat = call_checkauth4(cs, req); 2684 if (stat != NFS4_OK) { 2685 VN_RELE(cs->vp); 2686 cs->vp = oldvp; 2687 return (stat); 2688 } 2689 } 2690 2691 /* 2692 * After various NFS checks, do a label check on the path 2693 * component. The label on this path should either be the 2694 * global zone's label or a zone's label. We are only 2695 * interested in the zone's label because exported files 2696 * in global zone is accessible (though read-only) to 2697 * clients. The exportability/visibility check is already 2698 * done before reaching this code. 2699 */ 2700 if (is_system_labeled()) { 2701 bslabel_t *clabel; 2702 2703 ASSERT(req->rq_label != NULL); 2704 clabel = req->rq_label; 2705 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2706 "got client label from request(1)", struct svc_req *, req); 2707 2708 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2709 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 2710 error = EACCES; 2711 goto err_out; 2712 } 2713 } else { 2714 /* 2715 * We grant access to admin_low label clients 2716 * only if the client is trusted, i.e. also 2717 * running Solaris Trusted Extension. 2718 */ 2719 struct sockaddr *ca; 2720 int addr_type; 2721 void *ipaddr; 2722 tsol_tpc_t *tp; 2723 2724 ca = (struct sockaddr *)svc_getrpccaller( 2725 req->rq_xprt)->buf; 2726 if (ca->sa_family == AF_INET) { 2727 addr_type = IPV4_VERSION; 2728 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2729 } else if (ca->sa_family == AF_INET6) { 2730 addr_type = IPV6_VERSION; 2731 ipaddr = &((struct sockaddr_in6 *) 2732 ca)->sin6_addr; 2733 } 2734 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2735 if (tp == NULL || tp->tpc_tp.tp_doi != 2736 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2737 SUN_CIPSO) { 2738 if (tp != NULL) 2739 TPC_RELE(tp); 2740 error = EACCES; 2741 goto err_out; 2742 } 2743 TPC_RELE(tp); 2744 } 2745 } 2746 2747 error = makefh4(&cs->fh, vp, cs->exi); 2748 2749 err_out: 2750 if (error) { 2751 if (is_newvp) { 2752 VN_RELE(cs->vp); 2753 cs->vp = oldvp; 2754 } else 2755 VN_RELE(vp); 2756 return (puterrno4(error)); 2757 } 2758 2759 if (!is_newvp) { 2760 if (cs->vp) 2761 VN_RELE(cs->vp); 2762 cs->vp = vp; 2763 } else if (oldvp) 2764 VN_RELE(oldvp); 2765 2766 /* 2767 * if did lookup on attrdir and didn't lookup .., set named 2768 * attr fh flag 2769 */ 2770 if (attrdir && ! dotdot) 2771 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2772 2773 /* Assume false for now, open proc will set this */ 2774 cs->mandlock = FALSE; 2775 2776 return (NFS4_OK); 2777 } 2778 2779 /* ARGSUSED */ 2780 static void 2781 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2782 struct compound_state *cs) 2783 { 2784 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2785 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2786 char *nm; 2787 uint_t len; 2788 2789 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2790 LOOKUP4args *, args); 2791 2792 if (cs->vp == NULL) { 2793 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2794 goto out; 2795 } 2796 2797 if (cs->vp->v_type == VLNK) { 2798 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2799 goto out; 2800 } 2801 2802 if (cs->vp->v_type != VDIR) { 2803 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2804 goto out; 2805 } 2806 2807 if (!utf8_dir_verify(&args->objname)) { 2808 *cs->statusp = resp->status = NFS4ERR_INVAL; 2809 goto out; 2810 } 2811 2812 nm = utf8_to_str(&args->objname, &len, NULL); 2813 if (nm == NULL) { 2814 *cs->statusp = resp->status = NFS4ERR_INVAL; 2815 goto out; 2816 } 2817 2818 if (len > MAXNAMELEN) { 2819 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2820 kmem_free(nm, len); 2821 goto out; 2822 } 2823 2824 *cs->statusp = resp->status = do_rfs4_op_lookup(nm, len, req, cs); 2825 2826 kmem_free(nm, len); 2827 2828 out: 2829 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2830 LOOKUP4res *, resp); 2831 } 2832 2833 /* ARGSUSED */ 2834 static void 2835 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2836 struct compound_state *cs) 2837 { 2838 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2839 2840 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2841 2842 if (cs->vp == NULL) { 2843 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2844 goto out; 2845 } 2846 2847 if (cs->vp->v_type != VDIR) { 2848 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2849 goto out; 2850 } 2851 2852 *cs->statusp = resp->status = do_rfs4_op_lookup("..", 3, req, cs); 2853 2854 /* 2855 * From NFSV4 Specification, LOOKUPP should not check for 2856 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2857 */ 2858 if (resp->status == NFS4ERR_WRONGSEC) { 2859 *cs->statusp = resp->status = NFS4_OK; 2860 } 2861 2862 out: 2863 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2864 LOOKUPP4res *, resp); 2865 } 2866 2867 2868 /*ARGSUSED2*/ 2869 static void 2870 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2871 struct compound_state *cs) 2872 { 2873 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2874 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2875 vnode_t *avp = NULL; 2876 int lookup_flags = LOOKUP_XATTR, error; 2877 int exp_ro = 0; 2878 2879 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 2880 OPENATTR4args *, args); 2881 2882 if (cs->vp == NULL) { 2883 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2884 goto out; 2885 } 2886 2887 /* 2888 * Make a couple of checks made by copen() 2889 * 2890 * Check to make sure underlying fs supports xattrs. This 2891 * is required because solaris filesystem implementations 2892 * (UFS/TMPFS) don't enforce the noxattr mount option 2893 * in VOP_LOOKUP(LOOKUP_XATTR). If fs doesn't support this 2894 * pathconf cmd or if fs supports cmd but doesn't claim 2895 * support for xattr, return NOTSUPP. It would be better 2896 * to use VOP_PATHCONF( _PC_XATTR_ENABLED) for this; however, 2897 * that cmd is not available to VOP_PATHCONF interface 2898 * (it's only implemented inside pathconf syscall)... 2899 * 2900 * Verify permission to put attributes on files (access 2901 * checks from copen). 2902 */ 2903 2904 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 2905 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_XVATTR)) { 2906 *cs->statusp = resp->status = puterrno4(ENOTSUP); 2907 goto out; 2908 } 2909 2910 if ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 2911 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 2912 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)) { 2913 *cs->statusp = resp->status = puterrno4(EACCES); 2914 goto out; 2915 } 2916 2917 /* 2918 * The CREATE_XATTR_DIR VOP flag cannot be specified if 2919 * the file system is exported read-only -- regardless of 2920 * createdir flag. Otherwise the attrdir would be created 2921 * (assuming server fs isn't mounted readonly locally). If 2922 * VOP_LOOKUP returns ENOENT in this case, the error will 2923 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 2924 * because specfs has no VOP_LOOKUP op, so the macro would 2925 * return ENOSYS. EINVAL is returned by all (current) 2926 * Solaris file system implementations when any of their 2927 * restrictions are violated (xattr(dir) can't have xattrdir). 2928 * Returning NOTSUPP is more appropriate in this case 2929 * because the object will never be able to have an attrdir. 2930 */ 2931 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 2932 lookup_flags |= CREATE_XATTR_DIR; 2933 2934 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 2935 NULL, NULL, NULL); 2936 2937 if (error) { 2938 if (error == ENOENT && args->createdir && exp_ro) 2939 *cs->statusp = resp->status = puterrno4(EROFS); 2940 else if (error == EINVAL || error == ENOSYS) 2941 *cs->statusp = resp->status = puterrno4(ENOTSUP); 2942 else 2943 *cs->statusp = resp->status = puterrno4(error); 2944 goto out; 2945 } 2946 2947 ASSERT(avp->v_flag & V_XATTRDIR); 2948 2949 error = makefh4(&cs->fh, avp, cs->exi); 2950 2951 if (error) { 2952 VN_RELE(avp); 2953 *cs->statusp = resp->status = puterrno4(error); 2954 goto out; 2955 } 2956 2957 VN_RELE(cs->vp); 2958 cs->vp = avp; 2959 2960 /* 2961 * There is no requirement for an attrdir fh flag 2962 * because the attrdir has a vnode flag to distinguish 2963 * it from regular (non-xattr) directories. The 2964 * FH4_ATTRDIR flag is set for future sanity checks. 2965 */ 2966 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 2967 *cs->statusp = resp->status = NFS4_OK; 2968 2969 out: 2970 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 2971 OPENATTR4res *, resp); 2972 } 2973 2974 static int 2975 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 2976 caller_context_t *ct) 2977 { 2978 int error; 2979 int i; 2980 clock_t delaytime; 2981 2982 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 2983 2984 /* 2985 * Don't block on mandatory locks. If this routine returns 2986 * EAGAIN, the caller should return NFS4ERR_LOCKED. 2987 */ 2988 uio->uio_fmode = FNONBLOCK; 2989 2990 for (i = 0; i < rfs4_maxlock_tries; i++) { 2991 2992 2993 if (direction == FREAD) { 2994 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 2995 error = VOP_READ(vp, uio, ioflag, cred, ct); 2996 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 2997 } else { 2998 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 2999 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3000 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3001 } 3002 3003 if (error != EAGAIN) 3004 break; 3005 3006 if (i < rfs4_maxlock_tries - 1) { 3007 delay(delaytime); 3008 delaytime *= 2; 3009 } 3010 } 3011 3012 return (error); 3013 } 3014 3015 /* ARGSUSED */ 3016 static void 3017 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3018 struct compound_state *cs) 3019 { 3020 READ4args *args = &argop->nfs_argop4_u.opread; 3021 READ4res *resp = &resop->nfs_resop4_u.opread; 3022 int error; 3023 int verror; 3024 vnode_t *vp; 3025 struct vattr va; 3026 struct iovec iov; 3027 struct uio uio; 3028 u_offset_t offset; 3029 bool_t *deleg = &cs->deleg; 3030 nfsstat4 stat; 3031 int in_crit = 0; 3032 mblk_t *mp; 3033 int alloc_err = 0; 3034 caller_context_t ct; 3035 3036 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3037 READ4args, args); 3038 3039 vp = cs->vp; 3040 if (vp == NULL) { 3041 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3042 goto out; 3043 } 3044 if (cs->access == CS_ACCESS_DENIED) { 3045 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3046 goto out; 3047 } 3048 3049 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3050 deleg, TRUE, &ct)) != NFS4_OK) { 3051 *cs->statusp = resp->status = stat; 3052 goto out; 3053 } 3054 3055 /* 3056 * Enter the critical region before calling VOP_RWLOCK 3057 * to avoid a deadlock with write requests. 3058 */ 3059 if (nbl_need_check(vp)) { 3060 nbl_start_crit(vp, RW_READER); 3061 in_crit = 1; 3062 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3063 &ct)) { 3064 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3065 goto out; 3066 } 3067 } 3068 3069 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3070 deleg, TRUE, &ct)) != NFS4_OK) { 3071 *cs->statusp = resp->status = stat; 3072 goto out; 3073 } 3074 3075 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3076 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3077 3078 /* 3079 * If we can't get the attributes, then we can't do the 3080 * right access checking. So, we'll fail the request. 3081 */ 3082 if (verror) { 3083 *cs->statusp = resp->status = puterrno4(verror); 3084 goto out; 3085 } 3086 3087 if (vp->v_type != VREG) { 3088 *cs->statusp = resp->status = 3089 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3090 goto out; 3091 } 3092 3093 if (crgetuid(cs->cr) != va.va_uid && 3094 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3095 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3096 *cs->statusp = resp->status = puterrno4(error); 3097 goto out; 3098 } 3099 3100 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3101 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3102 goto out; 3103 } 3104 3105 offset = args->offset; 3106 if (offset >= va.va_size) { 3107 *cs->statusp = resp->status = NFS4_OK; 3108 resp->eof = TRUE; 3109 resp->data_len = 0; 3110 resp->data_val = NULL; 3111 resp->mblk = NULL; 3112 *cs->statusp = resp->status = NFS4_OK; 3113 goto out; 3114 } 3115 3116 if (args->count == 0) { 3117 *cs->statusp = resp->status = NFS4_OK; 3118 resp->eof = FALSE; 3119 resp->data_len = 0; 3120 resp->data_val = NULL; 3121 resp->mblk = NULL; 3122 goto out; 3123 } 3124 3125 /* 3126 * Do not allocate memory more than maximum allowed 3127 * transfer size 3128 */ 3129 if (args->count > rfs4_tsize(req)) 3130 args->count = rfs4_tsize(req); 3131 3132 /* 3133 * mp will contain the data to be sent out in the read reply. 3134 * It will be freed after the reply has been sent. 3135 * Let's roundup the data to a BYTES_PER_XDR_UNIT multiple, 3136 * so that the call to xdrmblk_putmblk() never fails. 3137 * If the first alloc of the requested size fails, then 3138 * decrease the size to something more reasonable and wait 3139 * for the allocation to occur. 3140 */ 3141 mp = allocb(RNDUP(args->count), BPRI_MED); 3142 if (mp == NULL) { 3143 if (args->count > MAXBSIZE) 3144 args->count = MAXBSIZE; 3145 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3146 STR_NOSIG, &alloc_err); 3147 } 3148 ASSERT(mp != NULL); 3149 ASSERT(alloc_err == 0); 3150 3151 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3152 iov.iov_len = args->count; 3153 uio.uio_iov = &iov; 3154 uio.uio_iovcnt = 1; 3155 uio.uio_segflg = UIO_SYSSPACE; 3156 uio.uio_extflg = UIO_COPY_CACHED; 3157 uio.uio_loffset = args->offset; 3158 uio.uio_resid = args->count; 3159 3160 error = do_io(FREAD, vp, &uio, 0, cs->cr, &ct); 3161 3162 va.va_mask = AT_SIZE; 3163 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3164 3165 if (error) { 3166 freeb(mp); 3167 *cs->statusp = resp->status = puterrno4(error); 3168 goto out; 3169 } 3170 3171 *cs->statusp = resp->status = NFS4_OK; 3172 3173 ASSERT(uio.uio_resid >= 0); 3174 resp->data_len = args->count - uio.uio_resid; 3175 resp->data_val = (char *)mp->b_datap->db_base; 3176 resp->mblk = mp; 3177 3178 if (!verror && offset + resp->data_len == va.va_size) 3179 resp->eof = TRUE; 3180 else 3181 resp->eof = FALSE; 3182 3183 out: 3184 if (in_crit) 3185 nbl_end_crit(vp); 3186 3187 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3188 READ4res *, resp); 3189 } 3190 3191 static void 3192 rfs4_op_read_free(nfs_resop4 *resop) 3193 { 3194 READ4res *resp = &resop->nfs_resop4_u.opread; 3195 3196 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3197 freeb(resp->mblk); 3198 resp->mblk = NULL; 3199 resp->data_val = NULL; 3200 resp->data_len = 0; 3201 } 3202 } 3203 3204 static void 3205 rfs4_op_readdir_free(nfs_resop4 *resop) 3206 { 3207 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3208 3209 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3210 freeb(resp->mblk); 3211 resp->mblk = NULL; 3212 resp->data_len = 0; 3213 } 3214 } 3215 3216 3217 /* ARGSUSED */ 3218 static void 3219 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3220 struct compound_state *cs) 3221 { 3222 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3223 int error; 3224 vnode_t *vp; 3225 struct exportinfo *exi, *sav_exi; 3226 nfs_fh4_fmt_t *fh_fmtp; 3227 3228 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3229 3230 if (cs->vp) { 3231 VN_RELE(cs->vp); 3232 cs->vp = NULL; 3233 } 3234 3235 if (cs->cr) 3236 crfree(cs->cr); 3237 3238 cs->cr = crdup(cs->basecr); 3239 3240 vp = exi_public->exi_vp; 3241 if (vp == NULL) { 3242 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3243 goto out; 3244 } 3245 3246 if (is_system_labeled()) { 3247 bslabel_t *clabel; 3248 3249 ASSERT(req->rq_label != NULL); 3250 clabel = req->rq_label; 3251 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3252 "got client label from request(1)", 3253 struct svc_req *, req); 3254 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3255 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 3256 *cs->statusp = resp->status = 3257 NFS4ERR_SERVERFAULT; 3258 return; 3259 } 3260 } 3261 } 3262 3263 error = makefh4(&cs->fh, vp, exi_public); 3264 if (error != 0) { 3265 *cs->statusp = resp->status = puterrno4(error); 3266 goto out; 3267 } 3268 sav_exi = cs->exi; 3269 if (exi_public == exi_root) { 3270 /* 3271 * No filesystem is actually shared public, so we default 3272 * to exi_root. In this case, we must check whether root 3273 * is exported. 3274 */ 3275 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3276 3277 /* 3278 * if root filesystem is exported, the exportinfo struct that we 3279 * should use is what checkexport4 returns, because root_exi is 3280 * actually a mostly empty struct. 3281 */ 3282 exi = checkexport4(&fh_fmtp->fh4_fsid, 3283 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3284 cs->exi = ((exi != NULL) ? exi : exi_public); 3285 } else { 3286 /* 3287 * it's a properly shared filesystem 3288 */ 3289 cs->exi = exi_public; 3290 } 3291 3292 VN_HOLD(vp); 3293 cs->vp = vp; 3294 3295 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3296 VN_RELE(cs->vp); 3297 cs->vp = NULL; 3298 cs->exi = sav_exi; 3299 goto out; 3300 } 3301 3302 *cs->statusp = resp->status = NFS4_OK; 3303 out: 3304 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3305 PUTPUBFH4res *, resp); 3306 } 3307 3308 /* 3309 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3310 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3311 * or joe have restrictive search permissions, then we shouldn't let 3312 * the client get a file handle. This is easy to enforce. However, we 3313 * don't know what security flavor should be used until we resolve the 3314 * path name. Another complication is uid mapping. If root is 3315 * the user, then it will be mapped to the anonymous user by default, 3316 * but we won't know that till we've resolved the path name. And we won't 3317 * know what the anonymous user is. 3318 * Luckily, SECINFO is specified to take a full filename. 3319 * So what we will have to in rfs4_op_lookup is check that flavor of 3320 * the target object matches that of the request, and if root was the 3321 * caller, check for the root= and anon= options, and if necessary, 3322 * repeat the lookup using the right cred_t. But that's not done yet. 3323 */ 3324 /* ARGSUSED */ 3325 static void 3326 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3327 struct compound_state *cs) 3328 { 3329 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3330 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3331 nfs_fh4_fmt_t *fh_fmtp; 3332 3333 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3334 PUTFH4args *, args); 3335 3336 if (cs->vp) { 3337 VN_RELE(cs->vp); 3338 cs->vp = NULL; 3339 } 3340 3341 if (cs->cr) { 3342 crfree(cs->cr); 3343 cs->cr = NULL; 3344 } 3345 3346 3347 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3348 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3349 goto out; 3350 } 3351 3352 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3353 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3354 NULL); 3355 3356 if (cs->exi == NULL) { 3357 *cs->statusp = resp->status = NFS4ERR_STALE; 3358 goto out; 3359 } 3360 3361 cs->cr = crdup(cs->basecr); 3362 3363 ASSERT(cs->cr != NULL); 3364 3365 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3366 *cs->statusp = resp->status; 3367 goto out; 3368 } 3369 3370 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3371 VN_RELE(cs->vp); 3372 cs->vp = NULL; 3373 goto out; 3374 } 3375 3376 nfs_fh4_copy(&args->object, &cs->fh); 3377 *cs->statusp = resp->status = NFS4_OK; 3378 cs->deleg = FALSE; 3379 3380 out: 3381 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3382 PUTFH4res *, resp); 3383 } 3384 3385 /* ARGSUSED */ 3386 static void 3387 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3388 struct compound_state *cs) 3389 3390 { 3391 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3392 int error; 3393 fid_t fid; 3394 struct exportinfo *exi, *sav_exi; 3395 3396 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3397 3398 if (cs->vp) { 3399 VN_RELE(cs->vp); 3400 cs->vp = NULL; 3401 } 3402 3403 if (cs->cr) 3404 crfree(cs->cr); 3405 3406 cs->cr = crdup(cs->basecr); 3407 3408 /* 3409 * Using rootdir, the system root vnode, 3410 * get its fid. 3411 */ 3412 bzero(&fid, sizeof (fid)); 3413 fid.fid_len = MAXFIDSZ; 3414 error = vop_fid_pseudo(rootdir, &fid); 3415 if (error != 0) { 3416 *cs->statusp = resp->status = puterrno4(error); 3417 goto out; 3418 } 3419 3420 /* 3421 * Then use the root fsid & fid it to find out if it's exported 3422 * 3423 * If the server root isn't exported directly, then 3424 * it should at least be a pseudo export based on 3425 * one or more exports further down in the server's 3426 * file tree. 3427 */ 3428 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3429 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3430 NFS4_DEBUG(rfs4_debug, 3431 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3432 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3433 goto out; 3434 } 3435 3436 /* 3437 * Now make a filehandle based on the root 3438 * export and root vnode. 3439 */ 3440 error = makefh4(&cs->fh, rootdir, exi); 3441 if (error != 0) { 3442 *cs->statusp = resp->status = puterrno4(error); 3443 goto out; 3444 } 3445 3446 sav_exi = cs->exi; 3447 cs->exi = exi; 3448 3449 VN_HOLD(rootdir); 3450 cs->vp = rootdir; 3451 3452 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3453 VN_RELE(rootdir); 3454 cs->vp = NULL; 3455 cs->exi = sav_exi; 3456 goto out; 3457 } 3458 3459 *cs->statusp = resp->status = NFS4_OK; 3460 cs->deleg = FALSE; 3461 out: 3462 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3463 PUTROOTFH4res *, resp); 3464 } 3465 3466 /* 3467 * A directory entry is a valid nfsv4 entry if 3468 * - it has a non-zero ino 3469 * - it is not a dot or dotdot name 3470 * - it is visible in a pseudo export or in a real export that can 3471 * only have a limited view. 3472 */ 3473 static bool_t 3474 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3475 int *expseudo, int check_visible) 3476 { 3477 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3478 *expseudo = 0; 3479 return (FALSE); 3480 } 3481 3482 if (! check_visible) { 3483 *expseudo = 0; 3484 return (TRUE); 3485 } 3486 3487 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 3488 } 3489 3490 /* 3491 * set_rdattr_params sets up the variables used to manage what information 3492 * to get for each directory entry. 3493 */ 3494 static nfsstat4 3495 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3496 bitmap4 attrs, bool_t *need_to_lookup) 3497 { 3498 uint_t va_mask; 3499 nfsstat4 status; 3500 bitmap4 objbits; 3501 3502 status = bitmap4_to_attrmask(attrs, sargp); 3503 if (status != NFS4_OK) { 3504 /* 3505 * could not even figure attr mask 3506 */ 3507 return (status); 3508 } 3509 va_mask = sargp->vap->va_mask; 3510 3511 /* 3512 * dirent's d_ino is always correct value for mounted_on_fileid. 3513 * mntdfid_set is set once here, but mounted_on_fileid is 3514 * set in main dirent processing loop for each dirent. 3515 * The mntdfid_set is a simple optimization that lets the 3516 * server attr code avoid work when caller is readdir. 3517 */ 3518 sargp->mntdfid_set = TRUE; 3519 3520 /* 3521 * Lookup entry only if client asked for any of the following: 3522 * a) vattr attrs 3523 * b) vfs attrs 3524 * c) attrs w/per-object scope requested (change, filehandle, etc) 3525 * other than mounted_on_fileid (which we can take from dirent) 3526 */ 3527 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3528 3529 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3530 *need_to_lookup = TRUE; 3531 else 3532 *need_to_lookup = FALSE; 3533 3534 if (sargp->sbp == NULL) 3535 return (NFS4_OK); 3536 3537 /* 3538 * If filesystem attrs are requested, get them now from the 3539 * directory vp, as most entries will have same filesystem. The only 3540 * exception are mounted over entries but we handle 3541 * those as we go (XXX mounted over detection not yet implemented). 3542 */ 3543 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3544 status = bitmap4_get_sysattrs(sargp); 3545 sargp->vap->va_mask = va_mask; 3546 3547 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3548 /* 3549 * Failed to get filesystem attributes. 3550 * Return a rdattr_error for each entry, but don't fail. 3551 * However, don't get any obj-dependent attrs. 3552 */ 3553 sargp->rdattr_error = status; /* for rdattr_error */ 3554 *need_to_lookup = FALSE; 3555 /* 3556 * At least get fileid for regular readdir output 3557 */ 3558 sargp->vap->va_mask &= AT_NODEID; 3559 status = NFS4_OK; 3560 } 3561 3562 return (status); 3563 } 3564 3565 /* 3566 * readlink: args: CURRENT_FH. 3567 * res: status. If success - CURRENT_FH unchanged, return linktext. 3568 */ 3569 3570 /* ARGSUSED */ 3571 static void 3572 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3573 struct compound_state *cs) 3574 { 3575 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3576 int error; 3577 vnode_t *vp; 3578 struct iovec iov; 3579 struct vattr va; 3580 struct uio uio; 3581 char *data; 3582 3583 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3584 3585 /* CURRENT_FH: directory */ 3586 vp = cs->vp; 3587 if (vp == NULL) { 3588 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3589 goto out; 3590 } 3591 3592 if (cs->access == CS_ACCESS_DENIED) { 3593 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3594 goto out; 3595 } 3596 3597 if (vp->v_type == VDIR) { 3598 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3599 goto out; 3600 } 3601 3602 if (vp->v_type != VLNK) { 3603 *cs->statusp = resp->status = NFS4ERR_INVAL; 3604 goto out; 3605 } 3606 3607 va.va_mask = AT_MODE; 3608 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3609 if (error) { 3610 *cs->statusp = resp->status = puterrno4(error); 3611 goto out; 3612 } 3613 3614 if (MANDLOCK(vp, va.va_mode)) { 3615 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3616 goto out; 3617 } 3618 3619 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3620 3621 iov.iov_base = data; 3622 iov.iov_len = MAXPATHLEN; 3623 uio.uio_iov = &iov; 3624 uio.uio_iovcnt = 1; 3625 uio.uio_segflg = UIO_SYSSPACE; 3626 uio.uio_extflg = UIO_COPY_CACHED; 3627 uio.uio_loffset = 0; 3628 uio.uio_resid = MAXPATHLEN; 3629 3630 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3631 3632 if (error) { 3633 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3634 *cs->statusp = resp->status = puterrno4(error); 3635 goto out; 3636 } 3637 3638 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3639 3640 /* 3641 * treat link name as data 3642 */ 3643 (void) str_to_utf8(data, &resp->link); 3644 3645 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3646 *cs->statusp = resp->status = NFS4_OK; 3647 3648 out: 3649 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3650 READLINK4res *, resp); 3651 } 3652 3653 static void 3654 rfs4_op_readlink_free(nfs_resop4 *resop) 3655 { 3656 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3657 utf8string *symlink = &resp->link; 3658 3659 if (symlink->utf8string_val) { 3660 UTF8STRING_FREE(*symlink) 3661 } 3662 } 3663 3664 /* 3665 * release_lockowner: 3666 * Release any state associated with the supplied 3667 * lockowner. Note if any lo_state is holding locks we will not 3668 * rele that lo_state and thus the lockowner will not be destroyed. 3669 * A client using lock after the lock owner stateid has been released 3670 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3671 * to reissue the lock with new_lock_owner set to TRUE. 3672 * args: lock_owner 3673 * res: status 3674 */ 3675 /* ARGSUSED */ 3676 static void 3677 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3678 struct svc_req *req, struct compound_state *cs) 3679 { 3680 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3681 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3682 rfs4_lockowner_t *lo; 3683 rfs4_openowner_t *oop; 3684 rfs4_state_t *sp; 3685 rfs4_lo_state_t *lsp; 3686 rfs4_client_t *cp; 3687 bool_t create = FALSE; 3688 locklist_t *llist; 3689 sysid_t sysid; 3690 3691 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3692 cs, RELEASE_LOCKOWNER4args *, ap); 3693 3694 /* Make sure there is a clientid around for this request */ 3695 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3696 3697 if (cp == NULL) { 3698 *cs->statusp = resp->status = 3699 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3700 goto out; 3701 } 3702 rfs4_client_rele(cp); 3703 3704 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3705 if (lo == NULL) { 3706 *cs->statusp = resp->status = NFS4_OK; 3707 goto out; 3708 } 3709 ASSERT(lo->client != NULL); 3710 3711 /* 3712 * Check for EXPIRED client. If so will reap state with in a lease 3713 * period or on next set_clientid_confirm step 3714 */ 3715 if (rfs4_lease_expired(lo->client)) { 3716 rfs4_lockowner_rele(lo); 3717 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3718 goto out; 3719 } 3720 3721 /* 3722 * If no sysid has been assigned, then no locks exist; just return. 3723 */ 3724 rfs4_dbe_lock(lo->client->dbe); 3725 if (lo->client->sysidt == LM_NOSYSID) { 3726 rfs4_lockowner_rele(lo); 3727 rfs4_dbe_unlock(lo->client->dbe); 3728 goto out; 3729 } 3730 3731 sysid = lo->client->sysidt; 3732 rfs4_dbe_unlock(lo->client->dbe); 3733 3734 /* 3735 * Mark the lockowner invalid. 3736 */ 3737 rfs4_dbe_hide(lo->dbe); 3738 3739 /* 3740 * sysid-pid pair should now not be used since the lockowner is 3741 * invalid. If the client were to instantiate the lockowner again 3742 * it would be assigned a new pid. Thus we can get the list of 3743 * current locks. 3744 */ 3745 3746 llist = flk_get_active_locks(sysid, lo->pid); 3747 /* If we are still holding locks fail */ 3748 if (llist != NULL) { 3749 3750 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3751 3752 flk_free_locklist(llist); 3753 /* 3754 * We need to unhide the lockowner so the client can 3755 * try it again. The bad thing here is if the client 3756 * has a logic error that took it here in the first place 3757 * he probably has lost accounting of the locks that it 3758 * is holding. So we may have dangling state until the 3759 * open owner state is reaped via close. One scenario 3760 * that could possibly occur is that the client has 3761 * sent the unlock request(s) in separate threads 3762 * and has not waited for the replies before sending the 3763 * RELEASE_LOCKOWNER request. Presumably, it would expect 3764 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3765 * reissuing the request. 3766 */ 3767 rfs4_dbe_unhide(lo->dbe); 3768 rfs4_lockowner_rele(lo); 3769 goto out; 3770 } 3771 3772 /* 3773 * For the corresponding client we need to check each open 3774 * owner for any opens that have lockowner state associated 3775 * with this lockowner. 3776 */ 3777 3778 rfs4_dbe_lock(lo->client->dbe); 3779 for (oop = lo->client->openownerlist.next->oop; oop != NULL; 3780 oop = oop->openownerlist.next->oop) { 3781 3782 rfs4_dbe_lock(oop->dbe); 3783 for (sp = oop->ownerstateids.next->sp; sp != NULL; 3784 sp = sp->ownerstateids.next->sp) { 3785 3786 rfs4_dbe_lock(sp->dbe); 3787 for (lsp = sp->lockownerlist.next->lsp; 3788 lsp != NULL; lsp = lsp->lockownerlist.next->lsp) { 3789 if (lsp->locker == lo) { 3790 rfs4_dbe_lock(lsp->dbe); 3791 rfs4_dbe_invalidate(lsp->dbe); 3792 rfs4_dbe_unlock(lsp->dbe); 3793 } 3794 } 3795 rfs4_dbe_unlock(sp->dbe); 3796 } 3797 rfs4_dbe_unlock(oop->dbe); 3798 } 3799 rfs4_dbe_unlock(lo->client->dbe); 3800 3801 rfs4_lockowner_rele(lo); 3802 3803 *cs->statusp = resp->status = NFS4_OK; 3804 3805 out: 3806 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 3807 cs, RELEASE_LOCKOWNER4res *, resp); 3808 } 3809 3810 /* 3811 * short utility function to lookup a file and recall the delegation 3812 */ 3813 static rfs4_file_t * 3814 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 3815 int *lkup_error, cred_t *cr) 3816 { 3817 vnode_t *vp; 3818 rfs4_file_t *fp = NULL; 3819 bool_t fcreate = FALSE; 3820 int error; 3821 3822 if (vpp) 3823 *vpp = NULL; 3824 3825 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 3826 NULL)) == 0) { 3827 if (vp->v_type == VREG) 3828 fp = rfs4_findfile(vp, NULL, &fcreate); 3829 if (vpp) 3830 *vpp = vp; 3831 else 3832 VN_RELE(vp); 3833 } 3834 3835 if (lkup_error) 3836 *lkup_error = error; 3837 3838 return (fp); 3839 } 3840 3841 /* 3842 * remove: args: CURRENT_FH: directory; name. 3843 * res: status. If success - CURRENT_FH unchanged, return change_info 3844 * for directory. 3845 */ 3846 /* ARGSUSED */ 3847 static void 3848 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3849 struct compound_state *cs) 3850 { 3851 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 3852 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 3853 int error; 3854 vnode_t *dvp, *vp; 3855 struct vattr bdva, idva, adva; 3856 char *nm; 3857 uint_t len; 3858 rfs4_file_t *fp; 3859 int in_crit = 0; 3860 bslabel_t *clabel; 3861 3862 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 3863 REMOVE4args *, args); 3864 3865 /* CURRENT_FH: directory */ 3866 dvp = cs->vp; 3867 if (dvp == NULL) { 3868 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3869 goto out; 3870 } 3871 3872 if (cs->access == CS_ACCESS_DENIED) { 3873 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3874 goto out; 3875 } 3876 3877 /* 3878 * If there is an unshared filesystem mounted on this vnode, 3879 * Do not allow to remove anything in this directory. 3880 */ 3881 if (vn_ismntpt(dvp)) { 3882 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3883 goto out; 3884 } 3885 3886 if (dvp->v_type != VDIR) { 3887 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3888 goto out; 3889 } 3890 3891 if (!utf8_dir_verify(&args->target)) { 3892 *cs->statusp = resp->status = NFS4ERR_INVAL; 3893 goto out; 3894 } 3895 3896 /* 3897 * Lookup the file so that we can check if it's a directory 3898 */ 3899 nm = utf8_to_fn(&args->target, &len, NULL); 3900 if (nm == NULL) { 3901 *cs->statusp = resp->status = NFS4ERR_INVAL; 3902 goto out; 3903 } 3904 3905 if (len > MAXNAMELEN) { 3906 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 3907 kmem_free(nm, len); 3908 goto out; 3909 } 3910 3911 if (rdonly4(cs->exi, cs->vp, req)) { 3912 *cs->statusp = resp->status = NFS4ERR_ROFS; 3913 kmem_free(nm, len); 3914 goto out; 3915 } 3916 3917 /* 3918 * Lookup the file to determine type and while we are see if 3919 * there is a file struct around and check for delegation. 3920 * We don't need to acquire va_seq before this lookup, if 3921 * it causes an update, cinfo.before will not match, which will 3922 * trigger a cache flush even if atomic is TRUE. 3923 */ 3924 if (fp = rfs4_lookup_and_findfile(dvp, nm, &vp, &error, cs->cr)) { 3925 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 3926 NULL)) { 3927 VN_RELE(vp); 3928 rfs4_file_rele(fp); 3929 *cs->statusp = resp->status = NFS4ERR_DELAY; 3930 kmem_free(nm, len); 3931 goto out; 3932 } 3933 } 3934 3935 /* Didn't find anything to remove */ 3936 if (vp == NULL) { 3937 *cs->statusp = resp->status = error; 3938 kmem_free(nm, len); 3939 goto out; 3940 } 3941 3942 if (nbl_need_check(vp)) { 3943 nbl_start_crit(vp, RW_READER); 3944 in_crit = 1; 3945 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 3946 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 3947 kmem_free(nm, len); 3948 nbl_end_crit(vp); 3949 VN_RELE(vp); 3950 if (fp) { 3951 rfs4_clear_dont_grant(fp); 3952 rfs4_file_rele(fp); 3953 } 3954 goto out; 3955 } 3956 } 3957 3958 /* check label before allowing removal */ 3959 if (is_system_labeled()) { 3960 ASSERT(req->rq_label != NULL); 3961 clabel = req->rq_label; 3962 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 3963 "got client label from request(1)", 3964 struct svc_req *, req); 3965 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3966 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK)) { 3967 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3968 kmem_free(nm, len); 3969 if (in_crit) 3970 nbl_end_crit(vp); 3971 VN_RELE(vp); 3972 if (fp) { 3973 rfs4_clear_dont_grant(fp); 3974 rfs4_file_rele(fp); 3975 } 3976 goto out; 3977 } 3978 } 3979 } 3980 3981 /* Get dir "before" change value */ 3982 bdva.va_mask = AT_CTIME|AT_SEQ; 3983 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 3984 if (error) { 3985 *cs->statusp = resp->status = puterrno4(error); 3986 kmem_free(nm, len); 3987 goto out; 3988 } 3989 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 3990 3991 /* Actually do the REMOVE operation */ 3992 if (vp->v_type == VDIR) { 3993 /* 3994 * Can't remove a directory that has a mounted-on filesystem. 3995 */ 3996 if (vn_ismntpt(vp)) { 3997 error = EACCES; 3998 } else { 3999 /* 4000 * System V defines rmdir to return EEXIST, 4001 * not * ENOTEMPTY, if the directory is not 4002 * empty. A System V NFS server needs to map 4003 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4004 * transmit over the wire. 4005 */ 4006 if ((error = VOP_RMDIR(dvp, nm, rootdir, cs->cr, 4007 NULL, 0)) == EEXIST) 4008 error = ENOTEMPTY; 4009 } 4010 } else { 4011 if ((error = VOP_REMOVE(dvp, nm, cs->cr, NULL, 0)) == 0 && 4012 fp != NULL) { 4013 struct vattr va; 4014 vnode_t *tvp; 4015 4016 rfs4_dbe_lock(fp->dbe); 4017 tvp = fp->vp; 4018 if (tvp) 4019 VN_HOLD(tvp); 4020 rfs4_dbe_unlock(fp->dbe); 4021 4022 if (tvp) { 4023 /* 4024 * This is va_seq safe because we are not 4025 * manipulating dvp. 4026 */ 4027 va.va_mask = AT_NLINK; 4028 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4029 va.va_nlink == 0) { 4030 /* Remove state on file remove */ 4031 if (in_crit) { 4032 nbl_end_crit(vp); 4033 in_crit = 0; 4034 } 4035 rfs4_close_all_state(fp); 4036 } 4037 VN_RELE(tvp); 4038 } 4039 } 4040 } 4041 4042 if (in_crit) 4043 nbl_end_crit(vp); 4044 VN_RELE(vp); 4045 4046 if (fp) { 4047 rfs4_clear_dont_grant(fp); 4048 rfs4_file_rele(fp); 4049 } 4050 kmem_free(nm, len); 4051 4052 if (error) { 4053 *cs->statusp = resp->status = puterrno4(error); 4054 goto out; 4055 } 4056 4057 /* 4058 * Get the initial "after" sequence number, if it fails, set to zero 4059 */ 4060 idva.va_mask = AT_SEQ; 4061 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4062 idva.va_seq = 0; 4063 4064 /* 4065 * Force modified data and metadata out to stable storage. 4066 */ 4067 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4068 4069 /* 4070 * Get "after" change value, if it fails, simply return the 4071 * before value. 4072 */ 4073 adva.va_mask = AT_CTIME|AT_SEQ; 4074 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4075 adva.va_ctime = bdva.va_ctime; 4076 adva.va_seq = 0; 4077 } 4078 4079 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4080 4081 /* 4082 * The cinfo.atomic = TRUE only if we have 4083 * non-zero va_seq's, and it has incremented by exactly one 4084 * during the VOP_REMOVE/RMDIR and it didn't change during 4085 * the VOP_FSYNC. 4086 */ 4087 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4088 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4089 resp->cinfo.atomic = TRUE; 4090 else 4091 resp->cinfo.atomic = FALSE; 4092 4093 *cs->statusp = resp->status = NFS4_OK; 4094 4095 out: 4096 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4097 REMOVE4res *, resp); 4098 } 4099 4100 /* 4101 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4102 * oldname and newname. 4103 * res: status. If success - CURRENT_FH unchanged, return change_info 4104 * for both from and target directories. 4105 */ 4106 /* ARGSUSED */ 4107 static void 4108 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4109 struct compound_state *cs) 4110 { 4111 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4112 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4113 int error; 4114 vnode_t *odvp; 4115 vnode_t *ndvp; 4116 vnode_t *srcvp, *targvp; 4117 struct vattr obdva, oidva, oadva; 4118 struct vattr nbdva, nidva, nadva; 4119 char *onm, *nnm; 4120 uint_t olen, nlen; 4121 rfs4_file_t *fp, *sfp; 4122 int in_crit_src, in_crit_targ; 4123 int fp_rele_grant_hold, sfp_rele_grant_hold; 4124 bslabel_t *clabel; 4125 4126 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4127 RENAME4args *, args); 4128 4129 fp = sfp = NULL; 4130 srcvp = targvp = NULL; 4131 in_crit_src = in_crit_targ = 0; 4132 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4133 4134 /* CURRENT_FH: target directory */ 4135 ndvp = cs->vp; 4136 if (ndvp == NULL) { 4137 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4138 goto out; 4139 } 4140 4141 /* SAVED_FH: from directory */ 4142 odvp = cs->saved_vp; 4143 if (odvp == NULL) { 4144 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4145 goto out; 4146 } 4147 4148 if (cs->access == CS_ACCESS_DENIED) { 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 objects in this directory. 4156 */ 4157 if (vn_ismntpt(odvp)) { 4158 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4159 goto out; 4160 } 4161 4162 /* 4163 * If there is an unshared filesystem mounted on this vnode, 4164 * do not allow to rename to this directory. 4165 */ 4166 if (vn_ismntpt(ndvp)) { 4167 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4168 goto out; 4169 } 4170 4171 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4172 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4173 goto out; 4174 } 4175 4176 if (cs->saved_exi != cs->exi) { 4177 *cs->statusp = resp->status = NFS4ERR_XDEV; 4178 goto out; 4179 } 4180 4181 if (!utf8_dir_verify(&args->oldname)) { 4182 *cs->statusp = resp->status = NFS4ERR_INVAL; 4183 goto out; 4184 } 4185 4186 if (!utf8_dir_verify(&args->newname)) { 4187 *cs->statusp = resp->status = NFS4ERR_INVAL; 4188 goto out; 4189 } 4190 4191 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4192 if (onm == NULL) { 4193 *cs->statusp = resp->status = NFS4ERR_INVAL; 4194 goto out; 4195 } 4196 4197 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4198 if (nnm == NULL) { 4199 *cs->statusp = resp->status = NFS4ERR_INVAL; 4200 kmem_free(onm, olen); 4201 goto out; 4202 } 4203 4204 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4205 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4206 kmem_free(onm, olen); 4207 kmem_free(nnm, nlen); 4208 goto out; 4209 } 4210 4211 4212 if (rdonly4(cs->exi, cs->vp, req)) { 4213 *cs->statusp = resp->status = NFS4ERR_ROFS; 4214 kmem_free(onm, olen); 4215 kmem_free(nnm, nlen); 4216 goto out; 4217 } 4218 4219 /* check label of the target dir */ 4220 if (is_system_labeled()) { 4221 ASSERT(req->rq_label != NULL); 4222 clabel = req->rq_label; 4223 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4224 "got client label from request(1)", 4225 struct svc_req *, req); 4226 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4227 if (!do_rfs_label_check(clabel, ndvp, 4228 EQUALITY_CHECK)) { 4229 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4230 goto out; 4231 } 4232 } 4233 } 4234 4235 /* 4236 * Is the source a file and have a delegation? 4237 * We don't need to acquire va_seq before these lookups, if 4238 * it causes an update, cinfo.before will not match, which will 4239 * trigger a cache flush even if atomic is TRUE. 4240 */ 4241 if (sfp = rfs4_lookup_and_findfile(odvp, onm, &srcvp, &error, cs->cr)) { 4242 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4243 NULL)) { 4244 *cs->statusp = resp->status = NFS4ERR_DELAY; 4245 goto err_out; 4246 } 4247 } 4248 4249 if (srcvp == NULL) { 4250 *cs->statusp = resp->status = puterrno4(error); 4251 kmem_free(onm, olen); 4252 kmem_free(nnm, nlen); 4253 goto out; 4254 } 4255 4256 sfp_rele_grant_hold = 1; 4257 4258 /* Does the destination exist and a file and have a delegation? */ 4259 if (fp = rfs4_lookup_and_findfile(ndvp, nnm, &targvp, NULL, cs->cr)) { 4260 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4261 NULL)) { 4262 *cs->statusp = resp->status = NFS4ERR_DELAY; 4263 goto err_out; 4264 } 4265 } 4266 fp_rele_grant_hold = 1; 4267 4268 4269 /* Check for NBMAND lock on both source and target */ 4270 if (nbl_need_check(srcvp)) { 4271 nbl_start_crit(srcvp, RW_READER); 4272 in_crit_src = 1; 4273 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4274 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4275 goto err_out; 4276 } 4277 } 4278 4279 if (targvp && nbl_need_check(targvp)) { 4280 nbl_start_crit(targvp, RW_READER); 4281 in_crit_targ = 1; 4282 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4283 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4284 goto err_out; 4285 } 4286 } 4287 4288 /* Get source "before" change value */ 4289 obdva.va_mask = AT_CTIME|AT_SEQ; 4290 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4291 if (!error) { 4292 nbdva.va_mask = AT_CTIME|AT_SEQ; 4293 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4294 } 4295 if (error) { 4296 *cs->statusp = resp->status = puterrno4(error); 4297 goto err_out; 4298 } 4299 4300 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4301 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4302 4303 if ((error = VOP_RENAME(odvp, onm, ndvp, nnm, cs->cr, NULL, 0)) == 0 && 4304 fp != NULL) { 4305 struct vattr va; 4306 vnode_t *tvp; 4307 4308 rfs4_dbe_lock(fp->dbe); 4309 tvp = fp->vp; 4310 if (tvp) 4311 VN_HOLD(tvp); 4312 rfs4_dbe_unlock(fp->dbe); 4313 4314 if (tvp) { 4315 va.va_mask = AT_NLINK; 4316 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4317 va.va_nlink == 0) { 4318 /* The file is gone and so should the state */ 4319 if (in_crit_targ) { 4320 nbl_end_crit(targvp); 4321 in_crit_targ = 0; 4322 } 4323 rfs4_close_all_state(fp); 4324 } 4325 VN_RELE(tvp); 4326 } 4327 } 4328 if (error == 0) { 4329 char *tmp; 4330 4331 /* fix the path name for the renamed file */ 4332 mutex_enter(&srcvp->v_lock); 4333 tmp = srcvp->v_path; 4334 srcvp->v_path = NULL; 4335 mutex_exit(&srcvp->v_lock); 4336 vn_setpath(rootdir, ndvp, srcvp, nnm, nlen - 1); 4337 if (tmp != NULL) 4338 kmem_free(tmp, strlen(tmp) + 1); 4339 } 4340 4341 if (in_crit_src) 4342 nbl_end_crit(srcvp); 4343 if (srcvp) 4344 VN_RELE(srcvp); 4345 if (in_crit_targ) 4346 nbl_end_crit(targvp); 4347 if (targvp) 4348 VN_RELE(targvp); 4349 4350 if (sfp) { 4351 rfs4_clear_dont_grant(sfp); 4352 rfs4_file_rele(sfp); 4353 } 4354 if (fp) { 4355 rfs4_clear_dont_grant(fp); 4356 rfs4_file_rele(fp); 4357 } 4358 4359 kmem_free(onm, olen); 4360 kmem_free(nnm, nlen); 4361 4362 /* 4363 * Get the initial "after" sequence number, if it fails, set to zero 4364 */ 4365 oidva.va_mask = AT_SEQ; 4366 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4367 oidva.va_seq = 0; 4368 4369 nidva.va_mask = AT_SEQ; 4370 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4371 nidva.va_seq = 0; 4372 4373 /* 4374 * Force modified data and metadata out to stable storage. 4375 */ 4376 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4377 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4378 4379 if (error) { 4380 *cs->statusp = resp->status = puterrno4(error); 4381 goto out; 4382 } 4383 4384 /* 4385 * Get "after" change values, if it fails, simply return the 4386 * before value. 4387 */ 4388 oadva.va_mask = AT_CTIME|AT_SEQ; 4389 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4390 oadva.va_ctime = obdva.va_ctime; 4391 oadva.va_seq = 0; 4392 } 4393 4394 nadva.va_mask = AT_CTIME|AT_SEQ; 4395 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4396 nadva.va_ctime = nbdva.va_ctime; 4397 nadva.va_seq = 0; 4398 } 4399 4400 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4401 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4402 4403 /* 4404 * The cinfo.atomic = TRUE only if we have 4405 * non-zero va_seq's, and it has incremented by exactly one 4406 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4407 */ 4408 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4409 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4410 resp->source_cinfo.atomic = TRUE; 4411 else 4412 resp->source_cinfo.atomic = FALSE; 4413 4414 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4415 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4416 resp->target_cinfo.atomic = TRUE; 4417 else 4418 resp->target_cinfo.atomic = FALSE; 4419 4420 #ifdef VOLATILE_FH_TEST 4421 { 4422 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4423 4424 /* 4425 * Add the renamed file handle to the volatile rename list 4426 */ 4427 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4428 /* file handles may expire on rename */ 4429 vnode_t *vp; 4430 4431 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4432 /* 4433 * Already know that nnm will be a valid string 4434 */ 4435 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4436 NULL, NULL, NULL); 4437 kmem_free(nnm, nlen); 4438 if (!error) { 4439 add_volrnm_fh(cs->exi, vp); 4440 VN_RELE(vp); 4441 } 4442 } 4443 } 4444 #endif /* VOLATILE_FH_TEST */ 4445 4446 *cs->statusp = resp->status = NFS4_OK; 4447 out: 4448 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4449 RENAME4res *, resp); 4450 return; 4451 4452 err_out: 4453 kmem_free(onm, olen); 4454 kmem_free(nnm, nlen); 4455 4456 if (in_crit_src) nbl_end_crit(srcvp); 4457 if (in_crit_targ) nbl_end_crit(targvp); 4458 if (targvp) VN_RELE(targvp); 4459 if (srcvp) VN_RELE(srcvp); 4460 if (sfp) { 4461 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4462 rfs4_file_rele(sfp); 4463 } 4464 if (fp) { 4465 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4466 rfs4_file_rele(fp); 4467 } 4468 4469 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4470 RENAME4res *, resp); 4471 } 4472 4473 /* ARGSUSED */ 4474 static void 4475 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4476 struct compound_state *cs) 4477 { 4478 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4479 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4480 rfs4_client_t *cp; 4481 4482 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4483 RENEW4args *, args); 4484 4485 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4486 *cs->statusp = resp->status = 4487 rfs4_check_clientid(&args->clientid, 0); 4488 goto out; 4489 } 4490 4491 if (rfs4_lease_expired(cp)) { 4492 rfs4_client_rele(cp); 4493 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4494 goto out; 4495 } 4496 4497 rfs4_update_lease(cp); 4498 4499 mutex_enter(cp->cbinfo.cb_lock); 4500 if (cp->cbinfo.cb_notified_of_cb_path_down == FALSE) { 4501 cp->cbinfo.cb_notified_of_cb_path_down = TRUE; 4502 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4503 } else { 4504 *cs->statusp = resp->status = NFS4_OK; 4505 } 4506 mutex_exit(cp->cbinfo.cb_lock); 4507 4508 rfs4_client_rele(cp); 4509 4510 out: 4511 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4512 RENEW4res *, resp); 4513 } 4514 4515 /* ARGSUSED */ 4516 static void 4517 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4518 struct compound_state *cs) 4519 { 4520 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4521 4522 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4523 4524 /* No need to check cs->access - we are not accessing any object */ 4525 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4526 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4527 goto out; 4528 } 4529 if (cs->vp != NULL) { 4530 VN_RELE(cs->vp); 4531 } 4532 cs->vp = cs->saved_vp; 4533 cs->saved_vp = NULL; 4534 cs->exi = cs->saved_exi; 4535 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4536 *cs->statusp = resp->status = NFS4_OK; 4537 cs->deleg = FALSE; 4538 4539 out: 4540 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4541 RESTOREFH4res *, resp); 4542 } 4543 4544 /* ARGSUSED */ 4545 static void 4546 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4547 struct compound_state *cs) 4548 { 4549 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4550 4551 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4552 4553 /* No need to check cs->access - we are not accessing any object */ 4554 if (cs->vp == NULL) { 4555 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4556 goto out; 4557 } 4558 if (cs->saved_vp != NULL) { 4559 VN_RELE(cs->saved_vp); 4560 } 4561 cs->saved_vp = cs->vp; 4562 VN_HOLD(cs->saved_vp); 4563 cs->saved_exi = cs->exi; 4564 /* 4565 * since SAVEFH is fairly rare, don't alloc space for its fh 4566 * unless necessary. 4567 */ 4568 if (cs->saved_fh.nfs_fh4_val == NULL) { 4569 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4570 } 4571 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4572 *cs->statusp = resp->status = NFS4_OK; 4573 4574 out: 4575 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4576 SAVEFH4res *, resp); 4577 } 4578 4579 /* 4580 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4581 * return the bitmap of attrs that were set successfully. It is also 4582 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4583 * always be called only after rfs4_do_set_attrs(). 4584 * 4585 * Verify that the attributes are same as the expected ones. sargp->vap 4586 * and sargp->sbp contain the input attributes as translated from fattr4. 4587 * 4588 * This function verifies only the attrs that correspond to a vattr or 4589 * vfsstat struct. That is because of the extra step needed to get the 4590 * corresponding system structs. Other attributes have already been set or 4591 * verified by do_rfs4_set_attrs. 4592 * 4593 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4594 */ 4595 static int 4596 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4597 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4598 { 4599 int error, ret_error = 0; 4600 int i, k; 4601 uint_t sva_mask = sargp->vap->va_mask; 4602 uint_t vbit; 4603 union nfs4_attr_u *na; 4604 uint8_t *amap; 4605 bool_t getsb = ntovp->vfsstat; 4606 4607 if (sva_mask != 0) { 4608 /* 4609 * Okay to overwrite sargp->vap because we verify based 4610 * on the incoming values. 4611 */ 4612 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4613 sargp->cs->cr, NULL); 4614 if (ret_error) { 4615 if (resp == NULL) 4616 return (ret_error); 4617 /* 4618 * Must return bitmap of successful attrs 4619 */ 4620 sva_mask = 0; /* to prevent checking vap later */ 4621 } else { 4622 /* 4623 * Some file systems clobber va_mask. it is probably 4624 * wrong of them to do so, nonethless we practice 4625 * defensive coding. 4626 * See bug id 4276830. 4627 */ 4628 sargp->vap->va_mask = sva_mask; 4629 } 4630 } 4631 4632 if (getsb) { 4633 /* 4634 * Now get the superblock and loop on the bitmap, as there is 4635 * no simple way of translating from superblock to bitmap4. 4636 */ 4637 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4638 if (ret_error) { 4639 if (resp == NULL) 4640 goto errout; 4641 getsb = FALSE; 4642 } 4643 } 4644 4645 /* 4646 * Now loop and verify each attribute which getattr returned 4647 * whether it's the same as the input. 4648 */ 4649 if (resp == NULL && !getsb && (sva_mask == 0)) 4650 goto errout; 4651 4652 na = ntovp->na; 4653 amap = ntovp->amap; 4654 k = 0; 4655 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4656 k = *amap; 4657 ASSERT(nfs4_ntov_map[k].nval == k); 4658 vbit = nfs4_ntov_map[k].vbit; 4659 4660 /* 4661 * If vattr attribute but VOP_GETATTR failed, or it's 4662 * superblock attribute but VFS_STATVFS failed, skip 4663 */ 4664 if (vbit) { 4665 if ((vbit & sva_mask) == 0) 4666 continue; 4667 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4668 continue; 4669 } 4670 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4671 if (resp != NULL) { 4672 if (error) 4673 ret_error = -1; /* not all match */ 4674 else /* update response bitmap */ 4675 *resp |= nfs4_ntov_map[k].fbit; 4676 continue; 4677 } 4678 if (error) { 4679 ret_error = -1; /* not all match */ 4680 break; 4681 } 4682 } 4683 errout: 4684 return (ret_error); 4685 } 4686 4687 /* 4688 * Decode the attribute to be set/verified. If the attr requires a sys op 4689 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4690 * call the sv_getit function for it, because the sys op hasn't yet been done. 4691 * Return 0 for success, error code if failed. 4692 * 4693 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 4694 */ 4695 static int 4696 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 4697 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 4698 { 4699 int error = 0; 4700 bool_t set_later; 4701 4702 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 4703 4704 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 4705 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 4706 /* 4707 * don't verify yet if a vattr or sb dependent attr, 4708 * because we don't have their sys values yet. 4709 * Will be done later. 4710 */ 4711 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 4712 /* 4713 * ACLs are a special case, since setting the MODE 4714 * conflicts with setting the ACL. We delay setting 4715 * the ACL until all other attributes have been set. 4716 * The ACL gets set in do_rfs4_op_setattr(). 4717 */ 4718 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 4719 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 4720 sargp, nap); 4721 if (error) { 4722 xdr_free(nfs4_ntov_map[k].xfunc, 4723 (caddr_t)nap); 4724 } 4725 } 4726 } 4727 } else { 4728 #ifdef DEBUG 4729 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 4730 "decoding attribute %d\n", k); 4731 #endif 4732 error = EINVAL; 4733 } 4734 if (!error && resp_bval && !set_later) { 4735 *resp_bval |= nfs4_ntov_map[k].fbit; 4736 } 4737 4738 return (error); 4739 } 4740 4741 /* 4742 * Set vattr based on incoming fattr4 attrs - used by setattr. 4743 * Set response mask. Ignore any values that are not writable vattr attrs. 4744 */ 4745 static nfsstat4 4746 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4747 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 4748 nfs4_attr_cmd_t cmd) 4749 { 4750 int error = 0; 4751 int i; 4752 char *attrs = fattrp->attrlist4; 4753 uint32_t attrslen = fattrp->attrlist4_len; 4754 XDR xdr; 4755 nfsstat4 status = NFS4_OK; 4756 vnode_t *vp = cs->vp; 4757 union nfs4_attr_u *na; 4758 uint8_t *amap; 4759 4760 #ifndef lint 4761 /* 4762 * Make sure that maximum attribute number can be expressed as an 4763 * 8 bit quantity. 4764 */ 4765 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 4766 #endif 4767 4768 if (vp == NULL) { 4769 if (resp) 4770 *resp = 0; 4771 return (NFS4ERR_NOFILEHANDLE); 4772 } 4773 if (cs->access == CS_ACCESS_DENIED) { 4774 if (resp) 4775 *resp = 0; 4776 return (NFS4ERR_ACCESS); 4777 } 4778 4779 sargp->op = cmd; 4780 sargp->cs = cs; 4781 sargp->flag = 0; /* may be set later */ 4782 sargp->vap->va_mask = 0; 4783 sargp->rdattr_error = NFS4_OK; 4784 sargp->rdattr_error_req = FALSE; 4785 /* sargp->sbp is set by the caller */ 4786 4787 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 4788 4789 na = ntovp->na; 4790 amap = ntovp->amap; 4791 4792 /* 4793 * The following loop iterates on the nfs4_ntov_map checking 4794 * if the fbit is set in the requested bitmap. 4795 * If set then we process the arguments using the 4796 * rfs4_fattr4 conversion functions to populate the setattr 4797 * vattr and va_mask. Any settable attrs that are not using vattr 4798 * will be set in this loop. 4799 */ 4800 for (i = 0; i < nfs4_ntov_map_size; i++) { 4801 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 4802 continue; 4803 } 4804 /* 4805 * If setattr, must be a writable attr. 4806 * If verify/nverify, must be a readable attr. 4807 */ 4808 if ((error = (*nfs4_ntov_map[i].sv_getit)( 4809 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 4810 /* 4811 * Client tries to set/verify an 4812 * unsupported attribute, tries to set 4813 * a read only attr or verify a write 4814 * only one - error! 4815 */ 4816 break; 4817 } 4818 /* 4819 * Decode the attribute to set/verify 4820 */ 4821 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 4822 &xdr, resp ? resp : NULL, na); 4823 if (error) 4824 break; 4825 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 4826 na++; 4827 (ntovp->attrcnt)++; 4828 if (nfs4_ntov_map[i].vfsstat) 4829 ntovp->vfsstat = TRUE; 4830 } 4831 4832 if (error != 0) 4833 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 4834 puterrno4(error)); 4835 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 4836 return (status); 4837 } 4838 4839 static nfsstat4 4840 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4841 stateid4 *stateid) 4842 { 4843 int error = 0; 4844 struct nfs4_svgetit_arg sarg; 4845 bool_t trunc; 4846 4847 nfsstat4 status = NFS4_OK; 4848 cred_t *cr = cs->cr; 4849 vnode_t *vp = cs->vp; 4850 struct nfs4_ntov_table ntov; 4851 struct statvfs64 sb; 4852 struct vattr bva; 4853 struct flock64 bf; 4854 int in_crit = 0; 4855 uint_t saved_mask = 0; 4856 caller_context_t ct; 4857 4858 *resp = 0; 4859 sarg.sbp = &sb; 4860 nfs4_ntov_table_init(&ntov); 4861 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 4862 NFS4ATTR_SETIT); 4863 if (status != NFS4_OK) { 4864 /* 4865 * failed set attrs 4866 */ 4867 goto done; 4868 } 4869 if ((sarg.vap->va_mask == 0) && 4870 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 4871 /* 4872 * no further work to be done 4873 */ 4874 goto done; 4875 } 4876 4877 /* 4878 * If we got a request to set the ACL and the MODE, only 4879 * allow changing VSUID, VSGID, and VSVTX. Attempting 4880 * to change any other bits, along with setting an ACL, 4881 * gives NFS4ERR_INVAL. 4882 */ 4883 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 4884 (fattrp->attrmask & FATTR4_MODE_MASK)) { 4885 vattr_t va; 4886 4887 va.va_mask = AT_MODE; 4888 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 4889 if (error) { 4890 status = puterrno4(error); 4891 goto done; 4892 } 4893 if ((sarg.vap->va_mode ^ va.va_mode) & 4894 ~(VSUID | VSGID | VSVTX)) { 4895 status = NFS4ERR_INVAL; 4896 goto done; 4897 } 4898 } 4899 4900 /* Check stateid only if size has been set */ 4901 if (sarg.vap->va_mask & AT_SIZE) { 4902 trunc = (sarg.vap->va_size == 0); 4903 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 4904 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 4905 if (status != NFS4_OK) 4906 goto done; 4907 } else { 4908 ct.cc_sysid = 0; 4909 ct.cc_pid = 0; 4910 ct.cc_caller_id = nfs4_srv_caller_id; 4911 ct.cc_flags = CC_DONTBLOCK; 4912 } 4913 4914 /* XXX start of possible race with delegations */ 4915 4916 /* 4917 * We need to specially handle size changes because it is 4918 * possible for the client to create a file with read-only 4919 * modes, but with the file opened for writing. If the client 4920 * then tries to set the file size, e.g. ftruncate(3C), 4921 * fcntl(F_FREESP), the normal access checking done in 4922 * VOP_SETATTR would prevent the client from doing it even though 4923 * it should be allowed to do so. To get around this, we do the 4924 * access checking for ourselves and use VOP_SPACE which doesn't 4925 * do the access checking. 4926 * Also the client should not be allowed to change the file 4927 * size if there is a conflicting non-blocking mandatory lock in 4928 * the region of the change. 4929 */ 4930 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 4931 u_offset_t offset; 4932 ssize_t length; 4933 4934 /* 4935 * ufs_setattr clears AT_SIZE from vap->va_mask, but 4936 * before returning, sarg.vap->va_mask is used to 4937 * generate the setattr reply bitmap. We also clear 4938 * AT_SIZE below before calling VOP_SPACE. For both 4939 * of these cases, the va_mask needs to be saved here 4940 * and restored after calling VOP_SETATTR. 4941 */ 4942 saved_mask = sarg.vap->va_mask; 4943 4944 /* 4945 * Check any possible conflict due to NBMAND locks. 4946 * Get into critical region before VOP_GETATTR, so the 4947 * size attribute is valid when checking conflicts. 4948 */ 4949 if (nbl_need_check(vp)) { 4950 nbl_start_crit(vp, RW_READER); 4951 in_crit = 1; 4952 } 4953 4954 bva.va_mask = AT_UID|AT_SIZE; 4955 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 4956 status = puterrno4(error); 4957 goto done; 4958 } 4959 4960 if (in_crit) { 4961 if (sarg.vap->va_size < bva.va_size) { 4962 offset = sarg.vap->va_size; 4963 length = bva.va_size - sarg.vap->va_size; 4964 } else { 4965 offset = bva.va_size; 4966 length = sarg.vap->va_size - bva.va_size; 4967 } 4968 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 4969 &ct)) { 4970 status = NFS4ERR_LOCKED; 4971 goto done; 4972 } 4973 } 4974 4975 if (crgetuid(cr) == bva.va_uid) { 4976 sarg.vap->va_mask &= ~AT_SIZE; 4977 bf.l_type = F_WRLCK; 4978 bf.l_whence = 0; 4979 bf.l_start = (off64_t)sarg.vap->va_size; 4980 bf.l_len = 0; 4981 bf.l_sysid = 0; 4982 bf.l_pid = 0; 4983 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 4984 (offset_t)sarg.vap->va_size, cr, &ct); 4985 } 4986 } 4987 4988 if (!error && sarg.vap->va_mask != 0) 4989 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 4990 4991 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 4992 if (saved_mask & AT_SIZE) 4993 sarg.vap->va_mask |= AT_SIZE; 4994 4995 /* 4996 * If an ACL was being set, it has been delayed until now, 4997 * in order to set the mode (via the VOP_SETATTR() above) first. 4998 */ 4999 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5000 int i; 5001 5002 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5003 if (ntov.amap[i] == FATTR4_ACL) 5004 break; 5005 if (i < NFS4_MAXNUM_ATTRS) { 5006 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5007 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5008 if (error == 0) { 5009 *resp |= FATTR4_ACL_MASK; 5010 } else if (error == ENOTSUP) { 5011 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5012 status = NFS4ERR_ATTRNOTSUPP; 5013 goto done; 5014 } 5015 } else { 5016 NFS4_DEBUG(rfs4_debug, 5017 (CE_NOTE, "do_rfs4_op_setattr: " 5018 "unable to find ACL in fattr4")); 5019 error = EINVAL; 5020 } 5021 } 5022 5023 if (error) { 5024 /* check if a monitor detected a delegation conflict */ 5025 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5026 status = NFS4ERR_DELAY; 5027 else 5028 status = puterrno4(error); 5029 5030 /* 5031 * Set the response bitmap when setattr failed. 5032 * If VOP_SETATTR partially succeeded, test by doing a 5033 * VOP_GETATTR on the object and comparing the data 5034 * to the setattr arguments. 5035 */ 5036 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5037 } else { 5038 /* 5039 * Force modified metadata out to stable storage. 5040 */ 5041 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5042 /* 5043 * Set response bitmap 5044 */ 5045 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5046 } 5047 5048 /* Return early and already have a NFSv4 error */ 5049 done: 5050 /* 5051 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5052 * conversion sets both readable and writeable NFS4 attrs 5053 * for AT_MTIME and AT_ATIME. The line below masks out 5054 * unrequested attrs from the setattr result bitmap. This 5055 * is placed after the done: label to catch the ATTRNOTSUP 5056 * case. 5057 */ 5058 *resp &= fattrp->attrmask; 5059 5060 if (in_crit) 5061 nbl_end_crit(vp); 5062 5063 nfs4_ntov_table_free(&ntov, &sarg); 5064 5065 return (status); 5066 } 5067 5068 /* ARGSUSED */ 5069 static void 5070 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5071 struct compound_state *cs) 5072 { 5073 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5074 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5075 bslabel_t *clabel; 5076 5077 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5078 SETATTR4args *, args); 5079 5080 if (cs->vp == NULL) { 5081 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5082 goto out; 5083 } 5084 5085 /* 5086 * If there is an unshared filesystem mounted on this vnode, 5087 * do not allow to setattr on this vnode. 5088 */ 5089 if (vn_ismntpt(cs->vp)) { 5090 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5091 goto out; 5092 } 5093 5094 resp->attrsset = 0; 5095 5096 if (rdonly4(cs->exi, cs->vp, req)) { 5097 *cs->statusp = resp->status = NFS4ERR_ROFS; 5098 goto out; 5099 } 5100 5101 /* check label before setting attributes */ 5102 if (is_system_labeled()) { 5103 ASSERT(req->rq_label != NULL); 5104 clabel = req->rq_label; 5105 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5106 "got client label from request(1)", 5107 struct svc_req *, req); 5108 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5109 if (!do_rfs_label_check(clabel, cs->vp, 5110 EQUALITY_CHECK)) { 5111 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5112 goto out; 5113 } 5114 } 5115 } 5116 5117 *cs->statusp = resp->status = 5118 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5119 &args->stateid); 5120 5121 out: 5122 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5123 SETATTR4res *, resp); 5124 } 5125 5126 /* ARGSUSED */ 5127 static void 5128 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5129 struct compound_state *cs) 5130 { 5131 /* 5132 * verify and nverify are exactly the same, except that nverify 5133 * succeeds when some argument changed, and verify succeeds when 5134 * when none changed. 5135 */ 5136 5137 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5138 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5139 5140 int error; 5141 struct nfs4_svgetit_arg sarg; 5142 struct statvfs64 sb; 5143 struct nfs4_ntov_table ntov; 5144 5145 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5146 VERIFY4args *, args); 5147 5148 if (cs->vp == NULL) { 5149 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5150 goto out; 5151 } 5152 5153 sarg.sbp = &sb; 5154 nfs4_ntov_table_init(&ntov); 5155 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5156 &sarg, &ntov, NFS4ATTR_VERIT); 5157 if (resp->status != NFS4_OK) { 5158 /* 5159 * do_rfs4_set_attrs will try to verify systemwide attrs, 5160 * so could return -1 for "no match". 5161 */ 5162 if (resp->status == -1) 5163 resp->status = NFS4ERR_NOT_SAME; 5164 goto done; 5165 } 5166 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5167 switch (error) { 5168 case 0: 5169 resp->status = NFS4_OK; 5170 break; 5171 case -1: 5172 resp->status = NFS4ERR_NOT_SAME; 5173 break; 5174 default: 5175 resp->status = puterrno4(error); 5176 break; 5177 } 5178 done: 5179 *cs->statusp = resp->status; 5180 nfs4_ntov_table_free(&ntov, &sarg); 5181 out: 5182 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5183 VERIFY4res *, resp); 5184 } 5185 5186 /* ARGSUSED */ 5187 static void 5188 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5189 struct compound_state *cs) 5190 { 5191 /* 5192 * verify and nverify are exactly the same, except that nverify 5193 * succeeds when some argument changed, and verify succeeds when 5194 * when none changed. 5195 */ 5196 5197 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5198 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5199 5200 int error; 5201 struct nfs4_svgetit_arg sarg; 5202 struct statvfs64 sb; 5203 struct nfs4_ntov_table ntov; 5204 5205 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5206 NVERIFY4args *, args); 5207 5208 if (cs->vp == NULL) { 5209 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5210 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5211 NVERIFY4res *, resp); 5212 return; 5213 } 5214 sarg.sbp = &sb; 5215 nfs4_ntov_table_init(&ntov); 5216 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5217 &sarg, &ntov, NFS4ATTR_VERIT); 5218 if (resp->status != NFS4_OK) { 5219 /* 5220 * do_rfs4_set_attrs will try to verify systemwide attrs, 5221 * so could return -1 for "no match". 5222 */ 5223 if (resp->status == -1) 5224 resp->status = NFS4_OK; 5225 goto done; 5226 } 5227 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5228 switch (error) { 5229 case 0: 5230 resp->status = NFS4ERR_SAME; 5231 break; 5232 case -1: 5233 resp->status = NFS4_OK; 5234 break; 5235 default: 5236 resp->status = puterrno4(error); 5237 break; 5238 } 5239 done: 5240 *cs->statusp = resp->status; 5241 nfs4_ntov_table_free(&ntov, &sarg); 5242 5243 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5244 NVERIFY4res *, resp); 5245 } 5246 5247 /* 5248 * XXX - This should live in an NFS header file. 5249 */ 5250 #define MAX_IOVECS 12 5251 5252 /* ARGSUSED */ 5253 static void 5254 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5255 struct compound_state *cs) 5256 { 5257 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5258 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5259 int error; 5260 vnode_t *vp; 5261 struct vattr bva; 5262 u_offset_t rlimit; 5263 struct uio uio; 5264 struct iovec iov[MAX_IOVECS]; 5265 struct iovec *iovp; 5266 int iovcnt; 5267 int ioflag; 5268 cred_t *savecred, *cr; 5269 bool_t *deleg = &cs->deleg; 5270 nfsstat4 stat; 5271 int in_crit = 0; 5272 caller_context_t ct; 5273 5274 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5275 WRITE4args *, args); 5276 5277 vp = cs->vp; 5278 if (vp == NULL) { 5279 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5280 goto out; 5281 } 5282 if (cs->access == CS_ACCESS_DENIED) { 5283 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5284 goto out; 5285 } 5286 5287 cr = cs->cr; 5288 5289 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5290 deleg, TRUE, &ct)) != NFS4_OK) { 5291 *cs->statusp = resp->status = stat; 5292 goto out; 5293 } 5294 5295 /* 5296 * We have to enter the critical region before calling VOP_RWLOCK 5297 * to avoid a deadlock with ufs. 5298 */ 5299 if (nbl_need_check(vp)) { 5300 nbl_start_crit(vp, RW_READER); 5301 in_crit = 1; 5302 if (nbl_conflict(vp, NBL_WRITE, 5303 args->offset, args->data_len, 0, &ct)) { 5304 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5305 goto out; 5306 } 5307 } 5308 5309 bva.va_mask = AT_MODE | AT_UID; 5310 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5311 5312 /* 5313 * If we can't get the attributes, then we can't do the 5314 * right access checking. So, we'll fail the request. 5315 */ 5316 if (error) { 5317 *cs->statusp = resp->status = puterrno4(error); 5318 goto out; 5319 } 5320 5321 if (rdonly4(cs->exi, cs->vp, req)) { 5322 *cs->statusp = resp->status = NFS4ERR_ROFS; 5323 goto out; 5324 } 5325 5326 if (vp->v_type != VREG) { 5327 *cs->statusp = resp->status = 5328 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5329 goto out; 5330 } 5331 5332 if (crgetuid(cr) != bva.va_uid && 5333 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5334 *cs->statusp = resp->status = puterrno4(error); 5335 goto out; 5336 } 5337 5338 if (MANDLOCK(vp, bva.va_mode)) { 5339 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5340 goto out; 5341 } 5342 5343 if (args->data_len == 0) { 5344 *cs->statusp = resp->status = NFS4_OK; 5345 resp->count = 0; 5346 resp->committed = args->stable; 5347 resp->writeverf = Write4verf; 5348 goto out; 5349 } 5350 5351 if (args->mblk != NULL) { 5352 mblk_t *m; 5353 uint_t bytes, round_len; 5354 5355 iovcnt = 0; 5356 bytes = 0; 5357 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5358 for (m = args->mblk; 5359 m != NULL && bytes < round_len; 5360 m = m->b_cont) { 5361 iovcnt++; 5362 bytes += MBLKL(m); 5363 } 5364 #ifdef DEBUG 5365 /* should have ended on an mblk boundary */ 5366 if (bytes != round_len) { 5367 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5368 bytes, round_len, args->data_len); 5369 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5370 (void *)args->mblk, (void *)m); 5371 ASSERT(bytes == round_len); 5372 } 5373 #endif 5374 if (iovcnt <= MAX_IOVECS) { 5375 iovp = iov; 5376 } else { 5377 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5378 } 5379 mblk_to_iov(args->mblk, iovcnt, iovp); 5380 } else { 5381 iovcnt = 1; 5382 iovp = iov; 5383 iovp->iov_base = args->data_val; 5384 iovp->iov_len = args->data_len; 5385 } 5386 5387 uio.uio_iov = iovp; 5388 uio.uio_iovcnt = iovcnt; 5389 5390 uio.uio_segflg = UIO_SYSSPACE; 5391 uio.uio_extflg = UIO_COPY_DEFAULT; 5392 uio.uio_loffset = args->offset; 5393 uio.uio_resid = args->data_len; 5394 uio.uio_llimit = curproc->p_fsz_ctl; 5395 rlimit = uio.uio_llimit - args->offset; 5396 if (rlimit < (u_offset_t)uio.uio_resid) 5397 uio.uio_resid = (int)rlimit; 5398 5399 if (args->stable == UNSTABLE4) 5400 ioflag = 0; 5401 else if (args->stable == FILE_SYNC4) 5402 ioflag = FSYNC; 5403 else if (args->stable == DATA_SYNC4) 5404 ioflag = FDSYNC; 5405 else { 5406 if (iovp != iov) 5407 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5408 *cs->statusp = resp->status = NFS4ERR_INVAL; 5409 goto out; 5410 } 5411 5412 /* 5413 * We're changing creds because VM may fault and we need 5414 * the cred of the current thread to be used if quota 5415 * checking is enabled. 5416 */ 5417 savecred = curthread->t_cred; 5418 curthread->t_cred = cr; 5419 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5420 curthread->t_cred = savecred; 5421 5422 if (iovp != iov) 5423 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5424 5425 if (error) { 5426 *cs->statusp = resp->status = puterrno4(error); 5427 goto out; 5428 } 5429 5430 *cs->statusp = resp->status = NFS4_OK; 5431 resp->count = args->data_len - uio.uio_resid; 5432 5433 if (ioflag == 0) 5434 resp->committed = UNSTABLE4; 5435 else 5436 resp->committed = FILE_SYNC4; 5437 5438 resp->writeverf = Write4verf; 5439 5440 out: 5441 if (in_crit) 5442 nbl_end_crit(vp); 5443 5444 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5445 WRITE4res *, resp); 5446 } 5447 5448 5449 /* XXX put in a header file */ 5450 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5451 5452 void 5453 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5454 struct svc_req *req, cred_t *cr) 5455 { 5456 uint_t i; 5457 struct compound_state cs; 5458 5459 rfs4_init_compound_state(&cs); 5460 /* 5461 * Form a reply tag by copying over the reqeuest tag. 5462 */ 5463 resp->tag.utf8string_val = 5464 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5465 resp->tag.utf8string_len = args->tag.utf8string_len; 5466 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5467 resp->tag.utf8string_len); 5468 5469 cs.statusp = &resp->status; 5470 cs.req = req; 5471 5472 /* 5473 * XXX for now, minorversion should be zero 5474 */ 5475 if (args->minorversion != NFS4_MINORVERSION) { 5476 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5477 &cs, COMPOUND4args *, args); 5478 resp->array_len = 0; 5479 resp->array = NULL; 5480 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5481 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5482 &cs, COMPOUND4res *, resp); 5483 resp->array_len = 0; 5484 return; 5485 } 5486 5487 resp->array_len = args->array_len; 5488 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5489 KM_SLEEP); 5490 5491 ASSERT(exi == NULL); 5492 ASSERT(cr == NULL); 5493 5494 cr = crget(); 5495 ASSERT(cr != NULL); 5496 5497 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5498 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5499 &cs, COMPOUND4args *, args); 5500 crfree(cr); 5501 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5502 &cs, COMPOUND4res *, resp); 5503 return; 5504 } 5505 5506 cs.basecr = cr; 5507 5508 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5509 COMPOUND4args *, args); 5510 5511 /* 5512 * For now, NFS4 compound processing must be protected by 5513 * exported_lock because it can access more than one exportinfo 5514 * per compound and share/unshare can now change multiple 5515 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5516 * per proc (excluding public exinfo), and exi_count design 5517 * is sufficient to protect concurrent execution of NFS2/3 5518 * ops along with unexport. This lock will be removed as 5519 * part of the NFSv4 phase 2 namespace redesign work. 5520 */ 5521 rw_enter(&exported_lock, RW_READER); 5522 5523 /* 5524 * If this is the first compound we've seen, we need to start all 5525 * new instances' grace periods. 5526 */ 5527 if (rfs4_seen_first_compound == 0) { 5528 rfs4_grace_start_new(); 5529 /* 5530 * This must be set after rfs4_grace_start_new(), otherwise 5531 * another thread could proceed past here before the former 5532 * is finished. 5533 */ 5534 rfs4_seen_first_compound = 1; 5535 } 5536 5537 for (i = 0; i < args->array_len && cs.cont; i++) { 5538 nfs_argop4 *argop; 5539 nfs_resop4 *resop; 5540 uint_t op; 5541 5542 argop = &args->array[i]; 5543 resop = &resp->array[i]; 5544 resop->resop = argop->argop; 5545 op = (uint_t)resop->resop; 5546 5547 if (op < rfsv4disp_cnt) { 5548 /* 5549 * Count the individual ops here; NULL and COMPOUND 5550 * are counted in common_dispatch() 5551 */ 5552 rfsproccnt_v4_ptr[op].value.ui64++; 5553 5554 NFS4_DEBUG(rfs4_debug > 1, 5555 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5556 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5557 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5558 rfs4_op_string[op], *cs.statusp)); 5559 if (*cs.statusp != NFS4_OK) 5560 cs.cont = FALSE; 5561 } else { 5562 /* 5563 * This is effectively dead code since XDR code 5564 * will have already returned BADXDR if op doesn't 5565 * decode to legal value. This only done for a 5566 * day when XDR code doesn't verify v4 opcodes. 5567 */ 5568 op = OP_ILLEGAL; 5569 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5570 5571 rfs4_op_illegal(argop, resop, req, &cs); 5572 cs.cont = FALSE; 5573 } 5574 5575 /* 5576 * If not at last op, and if we are to stop, then 5577 * compact the results array. 5578 */ 5579 if ((i + 1) < args->array_len && !cs.cont) { 5580 nfs_resop4 *new_res = kmem_alloc( 5581 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5582 bcopy(resp->array, 5583 new_res, (i+1) * sizeof (nfs_resop4)); 5584 kmem_free(resp->array, 5585 args->array_len * sizeof (nfs_resop4)); 5586 5587 resp->array_len = i + 1; 5588 resp->array = new_res; 5589 } 5590 } 5591 5592 rw_exit(&exported_lock); 5593 5594 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5595 COMPOUND4res *, resp); 5596 5597 if (cs.vp) 5598 VN_RELE(cs.vp); 5599 if (cs.saved_vp) 5600 VN_RELE(cs.saved_vp); 5601 if (cs.saved_fh.nfs_fh4_val) 5602 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5603 5604 if (cs.basecr) 5605 crfree(cs.basecr); 5606 if (cs.cr) 5607 crfree(cs.cr); 5608 /* 5609 * done with this compound request, free the label 5610 */ 5611 5612 if (req->rq_label != NULL) { 5613 kmem_free(req->rq_label, sizeof (bslabel_t)); 5614 req->rq_label = NULL; 5615 } 5616 } 5617 5618 /* 5619 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5620 * XXX zero out the tag and array values. Need to investigate why the 5621 * XXX calls occur, but at least prevent the panic for now. 5622 */ 5623 void 5624 rfs4_compound_free(COMPOUND4res *resp) 5625 { 5626 uint_t i; 5627 5628 if (resp->tag.utf8string_val) { 5629 UTF8STRING_FREE(resp->tag) 5630 } 5631 5632 for (i = 0; i < resp->array_len; i++) { 5633 nfs_resop4 *resop; 5634 uint_t op; 5635 5636 resop = &resp->array[i]; 5637 op = (uint_t)resop->resop; 5638 if (op < rfsv4disp_cnt) { 5639 (*rfsv4disptab[op].dis_resfree)(resop); 5640 } 5641 } 5642 if (resp->array != NULL) { 5643 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5644 } 5645 } 5646 5647 /* 5648 * Process the value of the compound request rpc flags, as a bit-AND 5649 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5650 */ 5651 void 5652 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5653 { 5654 int i; 5655 int flag = RPC_ALL; 5656 5657 for (i = 0; flag && i < args->array_len; i++) { 5658 uint_t op; 5659 5660 op = (uint_t)args->array[i].argop; 5661 5662 if (op < rfsv4disp_cnt) 5663 flag &= rfsv4disptab[op].dis_flags; 5664 else 5665 flag = 0; 5666 } 5667 *flagp = flag; 5668 } 5669 5670 nfsstat4 5671 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5672 { 5673 nfsstat4 e; 5674 5675 rfs4_dbe_lock(cp->dbe); 5676 5677 if (cp->sysidt != LM_NOSYSID) { 5678 *sp = cp->sysidt; 5679 e = NFS4_OK; 5680 5681 } else if ((cp->sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 5682 *sp = cp->sysidt; 5683 e = NFS4_OK; 5684 5685 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 5686 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 5687 } else 5688 e = NFS4ERR_DELAY; 5689 5690 rfs4_dbe_unlock(cp->dbe); 5691 return (e); 5692 } 5693 5694 #if defined(DEBUG) && ! defined(lint) 5695 static void lock_print(char *str, int operation, struct flock64 *flk) 5696 { 5697 char *op, *type; 5698 5699 switch (operation) { 5700 case F_GETLK: op = "F_GETLK"; 5701 break; 5702 case F_SETLK: op = "F_SETLK"; 5703 break; 5704 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 5705 break; 5706 default: op = "F_UNKNOWN"; 5707 break; 5708 } 5709 switch (flk->l_type) { 5710 case F_UNLCK: type = "F_UNLCK"; 5711 break; 5712 case F_RDLCK: type = "F_RDLCK"; 5713 break; 5714 case F_WRLCK: type = "F_WRLCK"; 5715 break; 5716 default: type = "F_UNKNOWN"; 5717 break; 5718 } 5719 5720 ASSERT(flk->l_whence == 0); 5721 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 5722 str, op, type, (longlong_t)flk->l_start, 5723 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 5724 } 5725 5726 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 5727 #else 5728 #define LOCK_PRINT(d, s, t, f) 5729 #endif 5730 5731 /*ARGSUSED*/ 5732 static bool_t 5733 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 5734 { 5735 return (TRUE); 5736 } 5737 5738 /* 5739 * Look up the pathname using the vp in cs as the directory vnode. 5740 * cs->vp will be the vnode for the file on success 5741 */ 5742 5743 static nfsstat4 5744 rfs4_lookup(component4 *component, struct svc_req *req, 5745 struct compound_state *cs) 5746 { 5747 char *nm; 5748 uint32_t len; 5749 nfsstat4 status; 5750 5751 if (cs->vp == NULL) { 5752 return (NFS4ERR_NOFILEHANDLE); 5753 } 5754 if (cs->vp->v_type != VDIR) { 5755 return (NFS4ERR_NOTDIR); 5756 } 5757 5758 if (!utf8_dir_verify(component)) 5759 return (NFS4ERR_INVAL); 5760 5761 nm = utf8_to_fn(component, &len, NULL); 5762 if (nm == NULL) { 5763 return (NFS4ERR_INVAL); 5764 } 5765 5766 if (len > MAXNAMELEN) { 5767 kmem_free(nm, len); 5768 return (NFS4ERR_NAMETOOLONG); 5769 } 5770 5771 status = do_rfs4_op_lookup(nm, len, req, cs); 5772 5773 kmem_free(nm, len); 5774 5775 return (status); 5776 } 5777 5778 static nfsstat4 5779 rfs4_lookupfile(component4 *component, struct svc_req *req, 5780 struct compound_state *cs, uint32_t access, 5781 change_info4 *cinfo) 5782 { 5783 nfsstat4 status; 5784 vnode_t *dvp = cs->vp; 5785 vattr_t bva, ava, fva; 5786 int error; 5787 5788 /* Get "before" change value */ 5789 bva.va_mask = AT_CTIME|AT_SEQ; 5790 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 5791 if (error) 5792 return (puterrno4(error)); 5793 5794 /* rfs4_lookup may VN_RELE directory */ 5795 VN_HOLD(dvp); 5796 5797 status = rfs4_lookup(component, req, cs); 5798 if (status != NFS4_OK) { 5799 VN_RELE(dvp); 5800 return (status); 5801 } 5802 5803 /* 5804 * Get "after" change value, if it fails, simply return the 5805 * before value. 5806 */ 5807 ava.va_mask = AT_CTIME|AT_SEQ; 5808 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 5809 ava.va_ctime = bva.va_ctime; 5810 ava.va_seq = 0; 5811 } 5812 VN_RELE(dvp); 5813 5814 /* 5815 * Validate the file is a file 5816 */ 5817 fva.va_mask = AT_TYPE|AT_MODE; 5818 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 5819 if (error) 5820 return (puterrno4(error)); 5821 5822 if (fva.va_type != VREG) { 5823 if (fva.va_type == VDIR) 5824 return (NFS4ERR_ISDIR); 5825 if (fva.va_type == VLNK) 5826 return (NFS4ERR_SYMLINK); 5827 return (NFS4ERR_INVAL); 5828 } 5829 5830 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 5831 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 5832 5833 /* 5834 * It is undefined if VOP_LOOKUP will change va_seq, so 5835 * cinfo.atomic = TRUE only if we have 5836 * non-zero va_seq's, and they have not changed. 5837 */ 5838 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 5839 cinfo->atomic = TRUE; 5840 else 5841 cinfo->atomic = FALSE; 5842 5843 /* Check for mandatory locking */ 5844 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 5845 return (check_open_access(access, cs, req)); 5846 } 5847 5848 static nfsstat4 5849 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 5850 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 5851 { 5852 int error; 5853 nfsstat4 status = NFS4_OK; 5854 vattr_t va; 5855 5856 tryagain: 5857 5858 /* 5859 * The file open mode used is VWRITE. If the client needs 5860 * some other semantic, then it should do the access checking 5861 * itself. It would have been nice to have the file open mode 5862 * passed as part of the arguments. 5863 */ 5864 5865 *created = TRUE; 5866 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 5867 5868 if (error) { 5869 *created = FALSE; 5870 5871 /* 5872 * If we got something other than file already exists 5873 * then just return this error. Otherwise, we got 5874 * EEXIST. If we were doing a GUARDED create, then 5875 * just return this error. Otherwise, we need to 5876 * make sure that this wasn't a duplicate of an 5877 * exclusive create request. 5878 * 5879 * The assumption is made that a non-exclusive create 5880 * request will never return EEXIST. 5881 */ 5882 5883 if (error != EEXIST || mode == GUARDED4) { 5884 status = puterrno4(error); 5885 return (status); 5886 } 5887 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 5888 NULL, NULL, NULL); 5889 5890 if (error) { 5891 /* 5892 * We couldn't find the file that we thought that 5893 * we just created. So, we'll just try creating 5894 * it again. 5895 */ 5896 if (error == ENOENT) 5897 goto tryagain; 5898 5899 status = puterrno4(error); 5900 return (status); 5901 } 5902 5903 if (mode == UNCHECKED4) { 5904 /* existing object must be regular file */ 5905 if ((*vpp)->v_type != VREG) { 5906 if ((*vpp)->v_type == VDIR) 5907 status = NFS4ERR_ISDIR; 5908 else if ((*vpp)->v_type == VLNK) 5909 status = NFS4ERR_SYMLINK; 5910 else 5911 status = NFS4ERR_INVAL; 5912 VN_RELE(*vpp); 5913 return (status); 5914 } 5915 5916 return (NFS4_OK); 5917 } 5918 5919 /* Check for duplicate request */ 5920 ASSERT(mtime != 0); 5921 va.va_mask = AT_MTIME; 5922 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 5923 if (!error) { 5924 /* We found the file */ 5925 if (va.va_mtime.tv_sec != mtime->tv_sec || 5926 va.va_mtime.tv_nsec != mtime->tv_nsec) { 5927 /* but its not our creation */ 5928 VN_RELE(*vpp); 5929 return (NFS4ERR_EXIST); 5930 } 5931 *created = TRUE; /* retrans of create == created */ 5932 return (NFS4_OK); 5933 } 5934 VN_RELE(*vpp); 5935 return (NFS4ERR_EXIST); 5936 } 5937 5938 return (NFS4_OK); 5939 } 5940 5941 static nfsstat4 5942 check_open_access(uint32_t access, 5943 struct compound_state *cs, struct svc_req *req) 5944 { 5945 int error; 5946 vnode_t *vp; 5947 bool_t readonly; 5948 cred_t *cr = cs->cr; 5949 5950 /* For now we don't allow mandatory locking as per V2/V3 */ 5951 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 5952 return (NFS4ERR_ACCESS); 5953 } 5954 5955 vp = cs->vp; 5956 ASSERT(cr != NULL && vp->v_type == VREG); 5957 5958 /* 5959 * If the file system is exported read only and we are trying 5960 * to open for write, then return NFS4ERR_ROFS 5961 */ 5962 5963 readonly = rdonly4(cs->exi, cs->vp, req); 5964 5965 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 5966 return (NFS4ERR_ROFS); 5967 5968 if (access & OPEN4_SHARE_ACCESS_READ) { 5969 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 5970 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 5971 return (NFS4ERR_ACCESS); 5972 } 5973 } 5974 5975 if (access & OPEN4_SHARE_ACCESS_WRITE) { 5976 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 5977 if (error) 5978 return (NFS4ERR_ACCESS); 5979 } 5980 5981 return (NFS4_OK); 5982 } 5983 5984 static nfsstat4 5985 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 5986 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 5987 { 5988 struct nfs4_svgetit_arg sarg; 5989 struct nfs4_ntov_table ntov; 5990 5991 bool_t ntov_table_init = FALSE; 5992 struct statvfs64 sb; 5993 nfsstat4 status; 5994 vnode_t *vp; 5995 vattr_t bva, ava, iva, cva, *vap; 5996 vnode_t *dvp; 5997 timespec32_t *mtime; 5998 char *nm = NULL; 5999 uint_t buflen; 6000 bool_t created; 6001 bool_t setsize = FALSE; 6002 len_t reqsize; 6003 int error; 6004 bool_t trunc; 6005 caller_context_t ct; 6006 component4 *component; 6007 bslabel_t *clabel; 6008 6009 sarg.sbp = &sb; 6010 6011 dvp = cs->vp; 6012 6013 /* Check if the file system is read only */ 6014 if (rdonly4(cs->exi, dvp, req)) 6015 return (NFS4ERR_ROFS); 6016 6017 /* check the label of including directory */ 6018 if (is_system_labeled()) { 6019 ASSERT(req->rq_label != NULL); 6020 clabel = req->rq_label; 6021 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6022 "got client label from request(1)", 6023 struct svc_req *, req); 6024 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6025 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK)) { 6026 return (NFS4ERR_ACCESS); 6027 } 6028 } 6029 } 6030 6031 /* 6032 * Get the last component of path name in nm. cs will reference 6033 * the including directory on success. 6034 */ 6035 component = &args->open_claim4_u.file; 6036 if (!utf8_dir_verify(component)) 6037 return (NFS4ERR_INVAL); 6038 6039 nm = utf8_to_fn(component, &buflen, NULL); 6040 6041 if (nm == NULL) 6042 return (NFS4ERR_RESOURCE); 6043 6044 if (buflen > MAXNAMELEN) { 6045 kmem_free(nm, buflen); 6046 return (NFS4ERR_NAMETOOLONG); 6047 } 6048 6049 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6050 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6051 if (error) { 6052 kmem_free(nm, buflen); 6053 return (puterrno4(error)); 6054 } 6055 6056 if (bva.va_type != VDIR) { 6057 kmem_free(nm, buflen); 6058 return (NFS4ERR_NOTDIR); 6059 } 6060 6061 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6062 6063 switch (args->mode) { 6064 case GUARDED4: 6065 /*FALLTHROUGH*/ 6066 case UNCHECKED4: 6067 nfs4_ntov_table_init(&ntov); 6068 ntov_table_init = TRUE; 6069 6070 *attrset = 0; 6071 status = do_rfs4_set_attrs(attrset, 6072 &args->createhow4_u.createattrs, 6073 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6074 6075 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6076 sarg.vap->va_type != VREG) { 6077 if (sarg.vap->va_type == VDIR) 6078 status = NFS4ERR_ISDIR; 6079 else if (sarg.vap->va_type == VLNK) 6080 status = NFS4ERR_SYMLINK; 6081 else 6082 status = NFS4ERR_INVAL; 6083 } 6084 6085 if (status != NFS4_OK) { 6086 kmem_free(nm, buflen); 6087 nfs4_ntov_table_free(&ntov, &sarg); 6088 *attrset = 0; 6089 return (status); 6090 } 6091 6092 vap = sarg.vap; 6093 vap->va_type = VREG; 6094 vap->va_mask |= AT_TYPE; 6095 6096 if ((vap->va_mask & AT_MODE) == 0) { 6097 vap->va_mask |= AT_MODE; 6098 vap->va_mode = (mode_t)0600; 6099 } 6100 6101 if (vap->va_mask & AT_SIZE) { 6102 6103 /* Disallow create with a non-zero size */ 6104 6105 if ((reqsize = sarg.vap->va_size) != 0) { 6106 kmem_free(nm, buflen); 6107 nfs4_ntov_table_free(&ntov, &sarg); 6108 *attrset = 0; 6109 return (NFS4ERR_INVAL); 6110 } 6111 setsize = TRUE; 6112 } 6113 break; 6114 6115 case EXCLUSIVE4: 6116 /* prohibit EXCL create of named attributes */ 6117 if (dvp->v_flag & V_XATTRDIR) { 6118 kmem_free(nm, buflen); 6119 *attrset = 0; 6120 return (NFS4ERR_INVAL); 6121 } 6122 6123 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6124 cva.va_type = VREG; 6125 /* 6126 * Ensure no time overflows. Assumes underlying 6127 * filesystem supports at least 32 bits. 6128 * Truncate nsec to usec resolution to allow valid 6129 * compares even if the underlying filesystem truncates. 6130 */ 6131 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6132 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6133 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6134 cva.va_mode = (mode_t)0; 6135 vap = &cva; 6136 break; 6137 } 6138 6139 status = create_vnode(dvp, nm, vap, args->mode, mtime, 6140 cs->cr, &vp, &created); 6141 kmem_free(nm, buflen); 6142 6143 if (status != NFS4_OK) { 6144 if (ntov_table_init) 6145 nfs4_ntov_table_free(&ntov, &sarg); 6146 *attrset = 0; 6147 return (status); 6148 } 6149 6150 trunc = (setsize && !created); 6151 6152 if (args->mode != EXCLUSIVE4) { 6153 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6154 6155 /* 6156 * True verification that object was created with correct 6157 * attrs is impossible. The attrs could have been changed 6158 * immediately after object creation. If attributes did 6159 * not verify, the only recourse for the server is to 6160 * destroy the object. Maybe if some attrs (like gid) 6161 * are set incorrectly, the object should be destroyed; 6162 * however, seems bad as a default policy. Do we really 6163 * want to destroy an object over one of the times not 6164 * verifying correctly? For these reasons, the server 6165 * currently sets bits in attrset for createattrs 6166 * that were set; however, no verification is done. 6167 * 6168 * vmask_to_nmask accounts for vattr bits set on create 6169 * [do_rfs4_set_attrs() only sets resp bits for 6170 * non-vattr/vfs bits.] 6171 * Mask off any bits we set by default so as not to return 6172 * more attrset bits than were requested in createattrs 6173 */ 6174 if (created) { 6175 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6176 *attrset &= createmask; 6177 } else { 6178 /* 6179 * We did not create the vnode (we tried but it 6180 * already existed). In this case, the only createattr 6181 * that the spec allows the server to set is size, 6182 * and even then, it can only be set if it is 0. 6183 */ 6184 *attrset = 0; 6185 if (trunc) 6186 *attrset = FATTR4_SIZE_MASK; 6187 } 6188 } 6189 if (ntov_table_init) 6190 nfs4_ntov_table_free(&ntov, &sarg); 6191 6192 /* 6193 * Get the initial "after" sequence number, if it fails, 6194 * set to zero, time to before. 6195 */ 6196 iva.va_mask = AT_CTIME|AT_SEQ; 6197 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6198 iva.va_seq = 0; 6199 iva.va_ctime = bva.va_ctime; 6200 } 6201 6202 /* 6203 * create_vnode attempts to create the file exclusive, 6204 * if it already exists the VOP_CREATE will fail and 6205 * may not increase va_seq. It is atomic if 6206 * we haven't changed the directory, but if it has changed 6207 * we don't know what changed it. 6208 */ 6209 if (!created) { 6210 if (bva.va_seq && iva.va_seq && 6211 bva.va_seq == iva.va_seq) 6212 cinfo->atomic = TRUE; 6213 else 6214 cinfo->atomic = FALSE; 6215 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6216 } else { 6217 /* 6218 * The entry was created, we need to sync the 6219 * directory metadata. 6220 */ 6221 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6222 6223 /* 6224 * Get "after" change value, if it fails, simply return the 6225 * before value. 6226 */ 6227 ava.va_mask = AT_CTIME|AT_SEQ; 6228 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6229 ava.va_ctime = bva.va_ctime; 6230 ava.va_seq = 0; 6231 } 6232 6233 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6234 6235 /* 6236 * The cinfo->atomic = TRUE only if we have 6237 * non-zero va_seq's, and it has incremented by exactly one 6238 * during the create_vnode and it didn't 6239 * change during the VOP_FSYNC. 6240 */ 6241 if (bva.va_seq && iva.va_seq && ava.va_seq && 6242 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6243 cinfo->atomic = TRUE; 6244 else 6245 cinfo->atomic = FALSE; 6246 } 6247 6248 /* Check for mandatory locking and that the size gets set. */ 6249 cva.va_mask = AT_MODE; 6250 if (setsize) 6251 cva.va_mask |= AT_SIZE; 6252 6253 /* Assume the worst */ 6254 cs->mandlock = TRUE; 6255 6256 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6257 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6258 6259 /* 6260 * Truncate the file if necessary; this would be 6261 * the case for create over an existing file. 6262 */ 6263 6264 if (trunc) { 6265 int in_crit = 0; 6266 rfs4_file_t *fp; 6267 bool_t create = FALSE; 6268 6269 /* 6270 * We are writing over an existing file. 6271 * Check to see if we need to recall a delegation. 6272 */ 6273 rfs4_hold_deleg_policy(); 6274 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6275 if (rfs4_check_delegated_byfp(FWRITE, fp, 6276 (reqsize == 0), FALSE, FALSE, &clientid)) { 6277 rfs4_file_rele(fp); 6278 rfs4_rele_deleg_policy(); 6279 VN_RELE(vp); 6280 *attrset = 0; 6281 return (NFS4ERR_DELAY); 6282 } 6283 rfs4_file_rele(fp); 6284 } 6285 rfs4_rele_deleg_policy(); 6286 6287 if (nbl_need_check(vp)) { 6288 in_crit = 1; 6289 6290 ASSERT(reqsize == 0); 6291 6292 nbl_start_crit(vp, RW_READER); 6293 if (nbl_conflict(vp, NBL_WRITE, 0, 6294 cva.va_size, 0, NULL)) { 6295 in_crit = 0; 6296 nbl_end_crit(vp); 6297 VN_RELE(vp); 6298 *attrset = 0; 6299 return (NFS4ERR_ACCESS); 6300 } 6301 } 6302 ct.cc_sysid = 0; 6303 ct.cc_pid = 0; 6304 ct.cc_caller_id = nfs4_srv_caller_id; 6305 ct.cc_flags = CC_DONTBLOCK; 6306 6307 cva.va_mask = AT_SIZE; 6308 cva.va_size = reqsize; 6309 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6310 if (in_crit) 6311 nbl_end_crit(vp); 6312 } 6313 } 6314 6315 error = makefh4(&cs->fh, vp, cs->exi); 6316 6317 /* 6318 * Force modified data and metadata out to stable storage. 6319 */ 6320 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6321 6322 if (error) { 6323 VN_RELE(vp); 6324 *attrset = 0; 6325 return (puterrno4(error)); 6326 } 6327 6328 /* if parent dir is attrdir, set namedattr fh flag */ 6329 if (dvp->v_flag & V_XATTRDIR) 6330 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6331 6332 if (cs->vp) 6333 VN_RELE(cs->vp); 6334 6335 cs->vp = vp; 6336 6337 /* 6338 * if we did not create the file, we will need to check 6339 * the access bits on the file 6340 */ 6341 6342 if (!created) { 6343 if (setsize) 6344 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6345 status = check_open_access(args->share_access, cs, req); 6346 if (status != NFS4_OK) 6347 *attrset = 0; 6348 } 6349 return (status); 6350 } 6351 6352 /*ARGSUSED*/ 6353 static void 6354 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6355 rfs4_openowner_t *oo, delegreq_t deleg, 6356 uint32_t access, uint32_t deny, 6357 OPEN4res *resp, int deleg_cur) 6358 { 6359 /* XXX Currently not using req */ 6360 rfs4_state_t *state; 6361 rfs4_file_t *file; 6362 bool_t screate = TRUE; 6363 bool_t fcreate = TRUE; 6364 uint32_t amodes; 6365 uint32_t dmodes; 6366 rfs4_deleg_state_t *dsp; 6367 struct shrlock shr; 6368 struct shr_locowner shr_loco; 6369 sysid_t sysid; 6370 nfsstat4 status; 6371 caller_context_t ct; 6372 int fflags = 0; 6373 int recall = 0; 6374 int err; 6375 int cmd; 6376 6377 /* get the file struct and hold a lock on it during initial open */ 6378 file = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6379 if (file == NULL) { 6380 NFS4_DEBUG(rfs4_debug, 6381 (CE_NOTE, "rfs4_do_open: can't find file")); 6382 resp->status = NFS4ERR_SERVERFAULT; 6383 return; 6384 } 6385 6386 state = rfs4_findstate_by_owner_file(oo, file, &screate); 6387 if (state == NULL) { 6388 NFS4_DEBUG(rfs4_debug, 6389 (CE_NOTE, "rfs4_do_open: can't find state")); 6390 resp->status = NFS4ERR_RESOURCE; 6391 /* No need to keep any reference */ 6392 rfs4_file_rele_withunlock(file); 6393 return; 6394 } 6395 6396 /* try to get the sysid before continuing */ 6397 if ((status = rfs4_client_sysid(oo->client, &sysid)) != NFS4_OK) { 6398 resp->status = status; 6399 rfs4_file_rele(file); 6400 /* Not a fully formed open; "close" it */ 6401 if (screate == TRUE) 6402 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6403 rfs4_state_rele(state); 6404 return; 6405 } 6406 6407 /* Calculate the fflags for this OPEN. */ 6408 if (access & OPEN4_SHARE_ACCESS_READ) 6409 fflags |= FREAD; 6410 if (access & OPEN4_SHARE_ACCESS_WRITE) 6411 fflags |= FWRITE; 6412 6413 /* 6414 * Calculate the new deny and access mode that this open is adding to 6415 * the file for this open owner; 6416 */ 6417 dmodes = (deny & ~state->share_deny); 6418 amodes = (access & ~state->share_access); 6419 6420 /* 6421 * Check to see the client has already sent an open for this 6422 * open owner on this file with the same share/deny modes. 6423 * If so, we don't need to check for a conflict and we don't 6424 * need to add another shrlock. If not, then we need to 6425 * check for conflicts in deny and access before checking for 6426 * conflicts in delegation. We don't want to recall a 6427 * delegation based on an open that will eventually fail based 6428 * on shares modes. 6429 */ 6430 6431 if (dmodes || amodes) { 6432 shr.s_access = (short)access; 6433 shr.s_deny = (short)deny; 6434 shr.s_pid = rfs4_dbe_getid(oo->dbe); 6435 shr.s_sysid = sysid; 6436 shr_loco.sl_pid = shr.s_pid; 6437 shr_loco.sl_id = shr.s_sysid; 6438 shr.s_owner = (caddr_t)&shr_loco; 6439 shr.s_own_len = sizeof (shr_loco); 6440 6441 cmd = nbl_need_check(cs->vp) ? F_SHARE_NBMAND : F_SHARE; 6442 if ((err = vop_shrlock(cs->vp, cmd, &shr, fflags)) != 0) { 6443 6444 resp->status = err == EAGAIN ? 6445 NFS4ERR_SHARE_DENIED : puterrno4(err); 6446 6447 rfs4_file_rele(file); 6448 /* Not a fully formed open; "close" it */ 6449 if (screate == TRUE) 6450 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6451 rfs4_state_rele(state); 6452 return; 6453 } 6454 } 6455 6456 rfs4_dbe_lock(state->dbe); 6457 rfs4_dbe_lock(file->dbe); 6458 6459 /* 6460 * Check to see if this file is delegated and if so, if a 6461 * recall needs to be done. 6462 */ 6463 if (rfs4_check_recall(state, access)) { 6464 rfs4_dbe_unlock(file->dbe); 6465 rfs4_dbe_unlock(state->dbe); 6466 rfs4_recall_deleg(file, FALSE, state->owner->client); 6467 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6468 rfs4_dbe_lock(state->dbe); 6469 rfs4_dbe_lock(file->dbe); 6470 /* Let's see if the delegation was returned */ 6471 if (rfs4_check_recall(state, access)) { 6472 rfs4_dbe_unlock(file->dbe); 6473 rfs4_dbe_unlock(state->dbe); 6474 rfs4_file_rele(file); 6475 rfs4_update_lease(state->owner->client); 6476 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6477 /* Not a fully formed open; "close" it */ 6478 if (screate == TRUE) 6479 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6480 rfs4_state_rele(state); 6481 resp->status = NFS4ERR_DELAY; 6482 return; 6483 } 6484 } 6485 /* 6486 * the share check passed and any delegation conflict has been 6487 * taken care of, now call vop_open. 6488 * if this is the first open then call vop_open with fflags. 6489 * if not, call vn_open_upgrade with just the upgrade flags. 6490 * 6491 * if the file has been opened already, it will have the current 6492 * access mode in the state struct. if it has no share access, then 6493 * this is a new open. 6494 * 6495 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6496 * call VOP_OPEN(), just do the open upgrade. 6497 */ 6498 if (((state->share_access & OPEN4_SHARE_ACCESS_BOTH) == 0) && 6499 !deleg_cur) { 6500 ct.cc_sysid = sysid; 6501 ct.cc_pid = shr.s_pid; 6502 ct.cc_caller_id = nfs4_srv_caller_id; 6503 ct.cc_flags = CC_DONTBLOCK; 6504 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6505 if (err) { 6506 rfs4_dbe_unlock(file->dbe); 6507 rfs4_dbe_unlock(state->dbe); 6508 rfs4_file_rele(file); 6509 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6510 /* Not a fully formed open; "close" it */ 6511 if (screate == TRUE) 6512 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6513 rfs4_state_rele(state); 6514 /* check if a monitor detected a delegation conflict */ 6515 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6516 resp->status = NFS4ERR_DELAY; 6517 else 6518 resp->status = NFS4ERR_SERVERFAULT; 6519 return; 6520 } 6521 } else { /* open upgrade */ 6522 /* 6523 * calculate the fflags for the new mode that is being added 6524 * by this upgrade. 6525 */ 6526 fflags = 0; 6527 if (amodes & OPEN4_SHARE_ACCESS_READ) 6528 fflags |= FREAD; 6529 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6530 fflags |= FWRITE; 6531 vn_open_upgrade(cs->vp, fflags); 6532 } 6533 6534 if (dmodes & OPEN4_SHARE_DENY_READ) 6535 file->deny_read++; 6536 if (dmodes & OPEN4_SHARE_DENY_WRITE) 6537 file->deny_write++; 6538 file->share_deny |= deny; 6539 state->share_deny |= deny; 6540 6541 if (amodes & OPEN4_SHARE_ACCESS_READ) 6542 file->access_read++; 6543 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6544 file->access_write++; 6545 file->share_access |= access; 6546 state->share_access |= access; 6547 6548 /* 6549 * Check for delegation here. if the deleg argument is not 6550 * DELEG_ANY, then this is a reclaim from a client and 6551 * we must honor the delegation requested. If necessary we can 6552 * set the recall flag. 6553 */ 6554 6555 dsp = rfs4_grant_delegation(deleg, state, &recall); 6556 6557 cs->deleg = (file->dinfo->dtype == OPEN_DELEGATE_WRITE); 6558 6559 next_stateid(&state->stateid); 6560 6561 resp->stateid = state->stateid.stateid; 6562 6563 rfs4_dbe_unlock(file->dbe); 6564 rfs4_dbe_unlock(state->dbe); 6565 6566 if (dsp) { 6567 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6568 rfs4_deleg_state_rele(dsp); 6569 } 6570 6571 rfs4_file_rele(file); 6572 rfs4_state_rele(state); 6573 6574 resp->status = NFS4_OK; 6575 } 6576 6577 /*ARGSUSED*/ 6578 static void 6579 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6580 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6581 { 6582 change_info4 *cinfo = &resp->cinfo; 6583 bitmap4 *attrset = &resp->attrset; 6584 6585 if (args->opentype == OPEN4_NOCREATE) 6586 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6587 req, cs, args->share_access, cinfo); 6588 else { 6589 /* inhibit delegation grants during exclusive create */ 6590 6591 if (args->mode == EXCLUSIVE4) 6592 rfs4_disable_delegation(); 6593 6594 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6595 oo->client->clientid); 6596 } 6597 6598 if (resp->status == NFS4_OK) { 6599 6600 /* cs->vp cs->fh now reference the desired file */ 6601 6602 rfs4_do_open(cs, req, oo, DELEG_ANY, args->share_access, 6603 args->share_deny, resp, 0); 6604 6605 /* 6606 * If rfs4_createfile set attrset, we must 6607 * clear this attrset before the response is copied. 6608 */ 6609 if (resp->status != NFS4_OK && resp->attrset) { 6610 resp->attrset = 0; 6611 } 6612 } 6613 else 6614 *cs->statusp = resp->status; 6615 6616 if (args->mode == EXCLUSIVE4) 6617 rfs4_enable_delegation(); 6618 } 6619 6620 /*ARGSUSED*/ 6621 static void 6622 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6623 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6624 { 6625 change_info4 *cinfo = &resp->cinfo; 6626 vattr_t va; 6627 vtype_t v_type = cs->vp->v_type; 6628 int error = 0; 6629 6630 /* Verify that we have a regular file */ 6631 if (v_type != VREG) { 6632 if (v_type == VDIR) 6633 resp->status = NFS4ERR_ISDIR; 6634 else if (v_type == VLNK) 6635 resp->status = NFS4ERR_SYMLINK; 6636 else 6637 resp->status = NFS4ERR_INVAL; 6638 return; 6639 } 6640 6641 va.va_mask = AT_MODE|AT_UID; 6642 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 6643 if (error) { 6644 resp->status = puterrno4(error); 6645 return; 6646 } 6647 6648 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 6649 6650 /* 6651 * Check if we have access to the file, Note the the file 6652 * could have originally been open UNCHECKED or GUARDED 6653 * with mode bits that will now fail, but there is nothing 6654 * we can really do about that except in the case that the 6655 * owner of the file is the one requesting the open. 6656 */ 6657 if (crgetuid(cs->cr) != va.va_uid) { 6658 resp->status = check_open_access(args->share_access, cs, req); 6659 if (resp->status != NFS4_OK) { 6660 return; 6661 } 6662 } 6663 6664 /* 6665 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 6666 */ 6667 cinfo->before = 0; 6668 cinfo->after = 0; 6669 cinfo->atomic = FALSE; 6670 6671 rfs4_do_open(cs, req, oo, 6672 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 6673 args->share_access, args->share_deny, resp, 0); 6674 } 6675 6676 static void 6677 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 6678 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6679 { 6680 int error; 6681 nfsstat4 status; 6682 stateid4 stateid = 6683 args->open_claim4_u.delegate_cur_info.delegate_stateid; 6684 rfs4_deleg_state_t *dsp; 6685 6686 /* 6687 * Find the state info from the stateid and confirm that the 6688 * file is delegated. If the state openowner is the same as 6689 * the supplied openowner we're done. If not, get the file 6690 * info from the found state info. Use that file info to 6691 * create the state for this lock owner. Note solaris doen't 6692 * really need the pathname to find the file. We may want to 6693 * lookup the pathname and make sure that the vp exist and 6694 * matches the vp in the file structure. However it is 6695 * possible that the pathname nolonger exists (local process 6696 * unlinks the file), so this may not be that useful. 6697 */ 6698 6699 status = rfs4_get_deleg_state(&stateid, &dsp); 6700 if (status != NFS4_OK) { 6701 resp->status = status; 6702 return; 6703 } 6704 6705 ASSERT(dsp->finfo->dinfo->dtype != OPEN_DELEGATE_NONE); 6706 6707 /* 6708 * New lock owner, create state. Since this was probably called 6709 * in response to a CB_RECALL we set deleg to DELEG_NONE 6710 */ 6711 6712 ASSERT(cs->vp != NULL); 6713 VN_RELE(cs->vp); 6714 VN_HOLD(dsp->finfo->vp); 6715 cs->vp = dsp->finfo->vp; 6716 6717 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 6718 rfs4_deleg_state_rele(dsp); 6719 *cs->statusp = resp->status = puterrno4(error); 6720 return; 6721 } 6722 6723 /* Mark progress for delegation returns */ 6724 dsp->finfo->dinfo->time_lastwrite = gethrestime_sec(); 6725 rfs4_deleg_state_rele(dsp); 6726 rfs4_do_open(cs, req, oo, DELEG_NONE, 6727 args->share_access, args->share_deny, resp, 1); 6728 } 6729 6730 /*ARGSUSED*/ 6731 static void 6732 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 6733 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6734 { 6735 /* 6736 * Lookup the pathname, it must already exist since this file 6737 * was delegated. 6738 * 6739 * Find the file and state info for this vp and open owner pair. 6740 * check that they are in fact delegated. 6741 * check that the state access and deny modes are the same. 6742 * 6743 * Return the delgation possibly seting the recall flag. 6744 */ 6745 rfs4_file_t *file; 6746 rfs4_state_t *state; 6747 bool_t create = FALSE; 6748 bool_t dcreate = FALSE; 6749 rfs4_deleg_state_t *dsp; 6750 nfsace4 *ace; 6751 6752 6753 /* Note we ignore oflags */ 6754 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 6755 req, cs, args->share_access, &resp->cinfo); 6756 6757 if (resp->status != NFS4_OK) { 6758 return; 6759 } 6760 6761 /* get the file struct and hold a lock on it during initial open */ 6762 file = rfs4_findfile_withlock(cs->vp, NULL, &create); 6763 if (file == NULL) { 6764 NFS4_DEBUG(rfs4_debug, 6765 (CE_NOTE, "rfs4_do_opendelprev: can't find file")); 6766 resp->status = NFS4ERR_SERVERFAULT; 6767 return; 6768 } 6769 6770 state = rfs4_findstate_by_owner_file(oo, file, &create); 6771 if (state == NULL) { 6772 NFS4_DEBUG(rfs4_debug, 6773 (CE_NOTE, "rfs4_do_opendelprev: can't find state")); 6774 resp->status = NFS4ERR_SERVERFAULT; 6775 rfs4_file_rele_withunlock(file); 6776 return; 6777 } 6778 6779 rfs4_dbe_lock(state->dbe); 6780 rfs4_dbe_lock(file->dbe); 6781 if (args->share_access != state->share_access || 6782 args->share_deny != state->share_deny || 6783 state->finfo->dinfo->dtype == OPEN_DELEGATE_NONE) { 6784 NFS4_DEBUG(rfs4_debug, 6785 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 6786 rfs4_dbe_unlock(file->dbe); 6787 rfs4_dbe_unlock(state->dbe); 6788 rfs4_file_rele(file); 6789 rfs4_state_rele(state); 6790 resp->status = NFS4ERR_SERVERFAULT; 6791 return; 6792 } 6793 rfs4_dbe_unlock(file->dbe); 6794 rfs4_dbe_unlock(state->dbe); 6795 6796 dsp = rfs4_finddeleg(state, &dcreate); 6797 if (dsp == NULL) { 6798 rfs4_state_rele(state); 6799 rfs4_file_rele(file); 6800 resp->status = NFS4ERR_SERVERFAULT; 6801 return; 6802 } 6803 6804 next_stateid(&state->stateid); 6805 6806 resp->stateid = state->stateid.stateid; 6807 6808 resp->delegation.delegation_type = dsp->dtype; 6809 6810 if (dsp->dtype == OPEN_DELEGATE_READ) { 6811 open_read_delegation4 *rv = 6812 &resp->delegation.open_delegation4_u.read; 6813 6814 rv->stateid = dsp->delegid.stateid; 6815 rv->recall = FALSE; /* no policy in place to set to TRUE */ 6816 ace = &rv->permissions; 6817 } else { 6818 open_write_delegation4 *rv = 6819 &resp->delegation.open_delegation4_u.write; 6820 6821 rv->stateid = dsp->delegid.stateid; 6822 rv->recall = FALSE; /* no policy in place to set to TRUE */ 6823 ace = &rv->permissions; 6824 rv->space_limit.limitby = NFS_LIMIT_SIZE; 6825 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 6826 } 6827 6828 /* XXX For now */ 6829 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 6830 ace->flag = 0; 6831 ace->access_mask = 0; 6832 ace->who.utf8string_len = 0; 6833 ace->who.utf8string_val = 0; 6834 6835 rfs4_deleg_state_rele(dsp); 6836 rfs4_state_rele(state); 6837 rfs4_file_rele(file); 6838 } 6839 6840 typedef enum { 6841 NFS4_CHKSEQ_OKAY = 0, 6842 NFS4_CHKSEQ_REPLAY = 1, 6843 NFS4_CHKSEQ_BAD = 2 6844 } rfs4_chkseq_t; 6845 6846 /* 6847 * Generic function for sequence number checks. 6848 */ 6849 static rfs4_chkseq_t 6850 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 6851 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 6852 { 6853 /* Same sequence ids and matching operations? */ 6854 if (seqid == rqst_seq && resop->resop == lastop->resop) { 6855 if (copyres == TRUE) { 6856 rfs4_free_reply(resop); 6857 rfs4_copy_reply(resop, lastop); 6858 } 6859 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6860 "Replayed SEQID %d\n", seqid)); 6861 return (NFS4_CHKSEQ_REPLAY); 6862 } 6863 6864 /* If the incoming sequence is not the next expected then it is bad */ 6865 if (rqst_seq != seqid + 1) { 6866 if (rqst_seq == seqid) { 6867 NFS4_DEBUG(rfs4_debug, 6868 (CE_NOTE, "BAD SEQID: Replayed sequence id " 6869 "but last op was %d current op is %d\n", 6870 lastop->resop, resop->resop)); 6871 return (NFS4_CHKSEQ_BAD); 6872 } 6873 NFS4_DEBUG(rfs4_debug, 6874 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 6875 rqst_seq, seqid)); 6876 return (NFS4_CHKSEQ_BAD); 6877 } 6878 6879 /* Everything okay -- next expected */ 6880 return (NFS4_CHKSEQ_OKAY); 6881 } 6882 6883 6884 static rfs4_chkseq_t 6885 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 6886 { 6887 rfs4_chkseq_t rc; 6888 6889 rfs4_dbe_lock(op->dbe); 6890 rc = rfs4_check_seqid(op->open_seqid, op->reply, seqid, resop, TRUE); 6891 rfs4_dbe_unlock(op->dbe); 6892 6893 if (rc == NFS4_CHKSEQ_OKAY) 6894 rfs4_update_lease(op->client); 6895 6896 return (rc); 6897 } 6898 6899 static rfs4_chkseq_t 6900 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, 6901 nfs_resop4 *resop) 6902 { 6903 rfs4_chkseq_t rc; 6904 6905 rfs4_dbe_lock(op->dbe); 6906 rc = rfs4_check_seqid(op->open_seqid, op->reply, 6907 olo_seqid, resop, FALSE); 6908 rfs4_dbe_unlock(op->dbe); 6909 6910 return (rc); 6911 } 6912 6913 static rfs4_chkseq_t 6914 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lp, nfs_resop4 *resop) 6915 { 6916 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 6917 6918 rfs4_dbe_lock(lp->dbe); 6919 if (!lp->skip_seqid_check) 6920 rc = rfs4_check_seqid(lp->seqid, lp->reply, seqid, resop, TRUE); 6921 rfs4_dbe_unlock(lp->dbe); 6922 6923 return (rc); 6924 } 6925 6926 static void 6927 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 6928 struct svc_req *req, struct compound_state *cs) 6929 { 6930 OPEN4args *args = &argop->nfs_argop4_u.opopen; 6931 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 6932 open_owner4 *owner = &args->owner; 6933 open_claim_type4 claim = args->claim; 6934 rfs4_client_t *cp; 6935 rfs4_openowner_t *oo; 6936 bool_t create; 6937 bool_t replay = FALSE; 6938 int can_reclaim; 6939 6940 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 6941 OPEN4args *, args); 6942 6943 if (cs->vp == NULL) { 6944 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 6945 goto end; 6946 } 6947 6948 /* 6949 * Need to check clientid and lease expiration first based on 6950 * error ordering and incrementing sequence id. 6951 */ 6952 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 6953 if (cp == NULL) { 6954 *cs->statusp = resp->status = 6955 rfs4_check_clientid(&owner->clientid, 0); 6956 goto end; 6957 } 6958 6959 if (rfs4_lease_expired(cp)) { 6960 rfs4_client_close(cp); 6961 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 6962 goto end; 6963 } 6964 can_reclaim = cp->can_reclaim; 6965 6966 /* 6967 * Find the open_owner for use from this point forward. Take 6968 * care in updating the sequence id based on the type of error 6969 * being returned. 6970 */ 6971 retry: 6972 create = TRUE; 6973 oo = rfs4_findopenowner(owner, &create, args->seqid); 6974 if (oo == NULL) { 6975 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 6976 rfs4_client_rele(cp); 6977 goto end; 6978 } 6979 6980 /* Hold off access to the sequence space while the open is done */ 6981 rfs4_sw_enter(&oo->oo_sw); 6982 6983 /* 6984 * If the open_owner existed before at the server, then check 6985 * the sequence id. 6986 */ 6987 if (!create && !oo->postpone_confirm) { 6988 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 6989 case NFS4_CHKSEQ_BAD: 6990 if ((args->seqid > oo->open_seqid) && 6991 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 resp->status = NFS4ERR_BAD_SEQID; 6998 goto out; 6999 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7000 replay = TRUE; 7001 goto out; 7002 default: 7003 break; 7004 } 7005 7006 /* 7007 * Sequence was ok and open owner exists 7008 * check to see if we have yet to see an 7009 * open_confirm. 7010 */ 7011 if (oo->need_confirm) { 7012 rfs4_free_opens(oo, TRUE, FALSE); 7013 rfs4_sw_exit(&oo->oo_sw); 7014 rfs4_openowner_rele(oo); 7015 goto retry; 7016 } 7017 } 7018 /* Grace only applies to regular-type OPENs */ 7019 if (rfs4_clnt_in_grace(cp) && 7020 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7021 *cs->statusp = resp->status = NFS4ERR_GRACE; 7022 goto out; 7023 } 7024 7025 /* 7026 * If previous state at the server existed then can_reclaim 7027 * will be set. If not reply NFS4ERR_NO_GRACE to the 7028 * client. 7029 */ 7030 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7031 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7032 goto out; 7033 } 7034 7035 7036 /* 7037 * Reject the open if the client has missed the grace period 7038 */ 7039 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7040 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7041 goto out; 7042 } 7043 7044 /* Couple of up-front bookkeeping items */ 7045 if (oo->need_confirm) { 7046 /* 7047 * If this is a reclaim OPEN then we should not ask 7048 * for a confirmation of the open_owner per the 7049 * protocol specification. 7050 */ 7051 if (claim == CLAIM_PREVIOUS) 7052 oo->need_confirm = FALSE; 7053 else 7054 resp->rflags |= OPEN4_RESULT_CONFIRM; 7055 } 7056 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7057 7058 /* 7059 * If there is an unshared filesystem mounted on this vnode, 7060 * do not allow to open/create in this directory. 7061 */ 7062 if (vn_ismntpt(cs->vp)) { 7063 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7064 goto out; 7065 } 7066 7067 /* 7068 * access must READ, WRITE, or BOTH. No access is invalid. 7069 * deny can be READ, WRITE, BOTH, or NONE. 7070 * bits not defined for access/deny are invalid. 7071 */ 7072 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7073 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7074 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7075 *cs->statusp = resp->status = NFS4ERR_INVAL; 7076 goto out; 7077 } 7078 7079 7080 /* 7081 * make sure attrset is zero before response is built. 7082 */ 7083 resp->attrset = 0; 7084 7085 switch (claim) { 7086 case CLAIM_NULL: 7087 rfs4_do_opennull(cs, req, args, oo, resp); 7088 break; 7089 case CLAIM_PREVIOUS: 7090 rfs4_do_openprev(cs, req, args, oo, resp); 7091 break; 7092 case CLAIM_DELEGATE_CUR: 7093 rfs4_do_opendelcur(cs, req, args, oo, resp); 7094 break; 7095 case CLAIM_DELEGATE_PREV: 7096 rfs4_do_opendelprev(cs, req, args, oo, resp); 7097 break; 7098 default: 7099 resp->status = NFS4ERR_INVAL; 7100 break; 7101 } 7102 7103 out: 7104 rfs4_client_rele(cp); 7105 7106 /* Catch sequence id handling here to make it a little easier */ 7107 switch (resp->status) { 7108 case NFS4ERR_BADXDR: 7109 case NFS4ERR_BAD_SEQID: 7110 case NFS4ERR_BAD_STATEID: 7111 case NFS4ERR_NOFILEHANDLE: 7112 case NFS4ERR_RESOURCE: 7113 case NFS4ERR_STALE_CLIENTID: 7114 case NFS4ERR_STALE_STATEID: 7115 /* 7116 * The protocol states that if any of these errors are 7117 * being returned, the sequence id should not be 7118 * incremented. Any other return requires an 7119 * increment. 7120 */ 7121 break; 7122 default: 7123 /* Always update the lease in this case */ 7124 rfs4_update_lease(oo->client); 7125 7126 /* Regular response - copy the result */ 7127 if (!replay) 7128 rfs4_update_open_resp(oo, resop, &cs->fh); 7129 7130 /* 7131 * REPLAY case: Only if the previous response was OK 7132 * do we copy the filehandle. If not OK, no 7133 * filehandle to copy. 7134 */ 7135 if (replay == TRUE && 7136 resp->status == NFS4_OK && 7137 oo->reply_fh.nfs_fh4_val) { 7138 /* 7139 * If this is a replay, we must restore the 7140 * current filehandle/vp to that of what was 7141 * returned originally. Try our best to do 7142 * it. 7143 */ 7144 nfs_fh4_fmt_t *fh_fmtp = 7145 (nfs_fh4_fmt_t *)oo->reply_fh.nfs_fh4_val; 7146 7147 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7148 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7149 7150 if (cs->exi == NULL) { 7151 resp->status = NFS4ERR_STALE; 7152 goto finish; 7153 } 7154 7155 VN_RELE(cs->vp); 7156 7157 cs->vp = nfs4_fhtovp(&oo->reply_fh, cs->exi, 7158 &resp->status); 7159 7160 if (cs->vp == NULL) 7161 goto finish; 7162 7163 nfs_fh4_copy(&oo->reply_fh, &cs->fh); 7164 } 7165 7166 /* 7167 * If this was a replay, no need to update the 7168 * sequence id. If the open_owner was not created on 7169 * this pass, then update. The first use of an 7170 * open_owner will not bump the sequence id. 7171 */ 7172 if (replay == FALSE && !create) 7173 rfs4_update_open_sequence(oo); 7174 /* 7175 * If the client is receiving an error and the 7176 * open_owner needs to be confirmed, there is no way 7177 * to notify the client of this fact ignoring the fact 7178 * that the server has no method of returning a 7179 * stateid to confirm. Therefore, the server needs to 7180 * mark this open_owner in a way as to avoid the 7181 * sequence id checking the next time the client uses 7182 * this open_owner. 7183 */ 7184 if (resp->status != NFS4_OK && oo->need_confirm) 7185 oo->postpone_confirm = TRUE; 7186 /* 7187 * If OK response then clear the postpone flag and 7188 * reset the sequence id to keep in sync with the 7189 * client. 7190 */ 7191 if (resp->status == NFS4_OK && oo->postpone_confirm) { 7192 oo->postpone_confirm = FALSE; 7193 oo->open_seqid = args->seqid; 7194 } 7195 break; 7196 } 7197 7198 finish: 7199 *cs->statusp = resp->status; 7200 7201 rfs4_sw_exit(&oo->oo_sw); 7202 rfs4_openowner_rele(oo); 7203 7204 end: 7205 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7206 OPEN4res *, resp); 7207 } 7208 7209 /*ARGSUSED*/ 7210 void 7211 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7212 struct svc_req *req, struct compound_state *cs) 7213 { 7214 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7215 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7216 rfs4_state_t *sp; 7217 nfsstat4 status; 7218 7219 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7220 OPEN_CONFIRM4args *, args); 7221 7222 if (cs->vp == NULL) { 7223 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7224 goto out; 7225 } 7226 7227 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7228 if (status != NFS4_OK) { 7229 *cs->statusp = resp->status = status; 7230 goto out; 7231 } 7232 7233 /* Ensure specified filehandle matches */ 7234 if (cs->vp != sp->finfo->vp) { 7235 rfs4_state_rele(sp); 7236 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7237 goto out; 7238 } 7239 7240 /* hold off other access to open_owner while we tinker */ 7241 rfs4_sw_enter(&sp->owner->oo_sw); 7242 7243 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7244 case NFS4_CHECK_STATEID_OKAY: 7245 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7246 resop) != 0) { 7247 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7248 break; 7249 } 7250 /* 7251 * If it is the appropriate stateid and determined to 7252 * be "OKAY" then this means that the stateid does not 7253 * need to be confirmed and the client is in error for 7254 * sending an OPEN_CONFIRM. 7255 */ 7256 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7257 break; 7258 case NFS4_CHECK_STATEID_OLD: 7259 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7260 break; 7261 case NFS4_CHECK_STATEID_BAD: 7262 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7263 break; 7264 case NFS4_CHECK_STATEID_EXPIRED: 7265 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7266 break; 7267 case NFS4_CHECK_STATEID_CLOSED: 7268 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7269 break; 7270 case NFS4_CHECK_STATEID_REPLAY: 7271 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7272 case NFS4_CHKSEQ_OKAY: 7273 /* 7274 * This is replayed stateid; if seqid matches 7275 * next expected, then client is using wrong seqid. 7276 */ 7277 /* fall through */ 7278 case NFS4_CHKSEQ_BAD: 7279 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7280 break; 7281 case NFS4_CHKSEQ_REPLAY: 7282 /* 7283 * Note this case is the duplicate case so 7284 * resp->status is already set. 7285 */ 7286 *cs->statusp = resp->status; 7287 rfs4_update_lease(sp->owner->client); 7288 break; 7289 } 7290 break; 7291 case NFS4_CHECK_STATEID_UNCONFIRMED: 7292 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7293 resop) != NFS4_CHKSEQ_OKAY) { 7294 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7295 break; 7296 } 7297 *cs->statusp = resp->status = NFS4_OK; 7298 7299 next_stateid(&sp->stateid); 7300 resp->open_stateid = sp->stateid.stateid; 7301 sp->owner->need_confirm = FALSE; 7302 rfs4_update_lease(sp->owner->client); 7303 rfs4_update_open_sequence(sp->owner); 7304 rfs4_update_open_resp(sp->owner, resop, NULL); 7305 break; 7306 default: 7307 ASSERT(FALSE); 7308 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7309 break; 7310 } 7311 rfs4_sw_exit(&sp->owner->oo_sw); 7312 rfs4_state_rele(sp); 7313 7314 out: 7315 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7316 OPEN_CONFIRM4res *, resp); 7317 } 7318 7319 /*ARGSUSED*/ 7320 void 7321 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7322 struct svc_req *req, struct compound_state *cs) 7323 { 7324 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7325 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7326 uint32_t access = args->share_access; 7327 uint32_t deny = args->share_deny; 7328 nfsstat4 status; 7329 rfs4_state_t *sp; 7330 rfs4_file_t *fp; 7331 int fflags = 0; 7332 7333 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7334 OPEN_DOWNGRADE4args *, args); 7335 7336 if (cs->vp == NULL) { 7337 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7338 goto out; 7339 } 7340 7341 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7342 if (status != NFS4_OK) { 7343 *cs->statusp = resp->status = status; 7344 goto out; 7345 } 7346 7347 /* Ensure specified filehandle matches */ 7348 if (cs->vp != sp->finfo->vp) { 7349 rfs4_state_rele(sp); 7350 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7351 goto out; 7352 } 7353 7354 /* hold off other access to open_owner while we tinker */ 7355 rfs4_sw_enter(&sp->owner->oo_sw); 7356 7357 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7358 case NFS4_CHECK_STATEID_OKAY: 7359 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7360 resop) != NFS4_CHKSEQ_OKAY) { 7361 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7362 goto end; 7363 } 7364 break; 7365 case NFS4_CHECK_STATEID_OLD: 7366 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7367 goto end; 7368 case NFS4_CHECK_STATEID_BAD: 7369 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7370 goto end; 7371 case NFS4_CHECK_STATEID_EXPIRED: 7372 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7373 goto end; 7374 case NFS4_CHECK_STATEID_CLOSED: 7375 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7376 goto end; 7377 case NFS4_CHECK_STATEID_UNCONFIRMED: 7378 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7379 goto end; 7380 case NFS4_CHECK_STATEID_REPLAY: 7381 /* Check the sequence id for the open owner */ 7382 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7383 case NFS4_CHKSEQ_OKAY: 7384 /* 7385 * This is replayed stateid; if seqid matches 7386 * next expected, then client is using wrong seqid. 7387 */ 7388 /* fall through */ 7389 case NFS4_CHKSEQ_BAD: 7390 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7391 goto end; 7392 case NFS4_CHKSEQ_REPLAY: 7393 /* 7394 * Note this case is the duplicate case so 7395 * resp->status is already set. 7396 */ 7397 *cs->statusp = resp->status; 7398 rfs4_update_lease(sp->owner->client); 7399 goto end; 7400 } 7401 break; 7402 default: 7403 ASSERT(FALSE); 7404 break; 7405 } 7406 7407 rfs4_dbe_lock(sp->dbe); 7408 /* 7409 * Check that the new access modes and deny modes are valid. 7410 * Check that no invalid bits are set. 7411 */ 7412 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7413 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7414 *cs->statusp = resp->status = NFS4ERR_INVAL; 7415 rfs4_update_open_sequence(sp->owner); 7416 rfs4_dbe_unlock(sp->dbe); 7417 goto end; 7418 } 7419 7420 /* 7421 * The new modes must be a subset of the current modes and 7422 * the access must specify at least one mode. To test that 7423 * the new mode is a subset of the current modes we bitwise 7424 * AND them together and check that the result equals the new 7425 * mode. For example: 7426 * New mode, access == R and current mode, sp->share_access == RW 7427 * access & sp->share_access == R == access, so the new access mode 7428 * is valid. Consider access == RW, sp->share_access = R 7429 * access & sp->share_access == R != access, so the new access mode 7430 * is invalid. 7431 */ 7432 if ((access & sp->share_access) != access || 7433 (deny & sp->share_deny) != deny || 7434 (access & 7435 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7436 *cs->statusp = resp->status = NFS4ERR_INVAL; 7437 rfs4_update_open_sequence(sp->owner); 7438 rfs4_dbe_unlock(sp->dbe); 7439 goto end; 7440 } 7441 7442 /* 7443 * Release any share locks associated with this stateID. 7444 * Strictly speaking, this violates the spec because the 7445 * spec effectively requires that open downgrade be atomic. 7446 * At present, fs_shrlock does not have this capability. 7447 */ 7448 rfs4_dbe_unlock(sp->dbe); 7449 rfs4_unshare(sp); 7450 rfs4_dbe_lock(sp->dbe); 7451 7452 fp = sp->finfo; 7453 rfs4_dbe_lock(fp->dbe); 7454 7455 /* 7456 * If the current mode has deny read and the new mode 7457 * does not, decrement the number of deny read mode bits 7458 * and if it goes to zero turn off the deny read bit 7459 * on the file. 7460 */ 7461 if ((sp->share_deny & OPEN4_SHARE_DENY_READ) && 7462 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7463 fp->deny_read--; 7464 if (fp->deny_read == 0) 7465 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 7466 } 7467 7468 /* 7469 * If the current mode has deny write and the new mode 7470 * does not, decrement the number of deny write mode bits 7471 * and if it goes to zero turn off the deny write bit 7472 * on the file. 7473 */ 7474 if ((sp->share_deny & OPEN4_SHARE_DENY_WRITE) && 7475 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7476 fp->deny_write--; 7477 if (fp->deny_write == 0) 7478 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7479 } 7480 7481 /* 7482 * If the current mode has access read and the new mode 7483 * does not, decrement the number of access read mode bits 7484 * and if it goes to zero turn off the access read bit 7485 * on the file. set fflags to FREAD for the call to 7486 * vn_open_downgrade(). 7487 */ 7488 if ((sp->share_access & OPEN4_SHARE_ACCESS_READ) && 7489 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7490 fp->access_read--; 7491 if (fp->access_read == 0) 7492 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7493 fflags |= FREAD; 7494 } 7495 7496 /* 7497 * If the current mode has access write and the new mode 7498 * does not, decrement the number of access write mode bits 7499 * and if it goes to zero turn off the access write bit 7500 * on the file. set fflags to FWRITE for the call to 7501 * vn_open_downgrade(). 7502 */ 7503 if ((sp->share_access & OPEN4_SHARE_ACCESS_WRITE) && 7504 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7505 fp->access_write--; 7506 if (fp->access_write == 0) 7507 fp->share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7508 fflags |= FWRITE; 7509 } 7510 7511 /* Set the new access and deny modes */ 7512 sp->share_access = access; 7513 sp->share_deny = deny; 7514 /* Check that the file is still accessible */ 7515 ASSERT(fp->share_access); 7516 7517 rfs4_dbe_unlock(fp->dbe); 7518 7519 rfs4_dbe_unlock(sp->dbe); 7520 7521 if ((status = rfs4_share(sp)) != NFS4_OK) { 7522 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7523 rfs4_update_open_sequence(sp->owner); 7524 goto end; 7525 } 7526 7527 /* 7528 * we successfully downgraded the share lock, now we need to downgrade 7529 * the open. it is possible that the downgrade was only for a deny 7530 * mode and we have nothing else to do. 7531 */ 7532 if ((fflags & (FREAD|FWRITE)) != 0) 7533 vn_open_downgrade(cs->vp, fflags); 7534 7535 rfs4_dbe_lock(sp->dbe); 7536 7537 /* Update the stateid */ 7538 next_stateid(&sp->stateid); 7539 resp->open_stateid = sp->stateid.stateid; 7540 7541 rfs4_dbe_unlock(sp->dbe); 7542 7543 *cs->statusp = resp->status = NFS4_OK; 7544 /* Update the lease */ 7545 rfs4_update_lease(sp->owner->client); 7546 /* And the sequence */ 7547 rfs4_update_open_sequence(sp->owner); 7548 rfs4_update_open_resp(sp->owner, resop, NULL); 7549 7550 end: 7551 rfs4_sw_exit(&sp->owner->oo_sw); 7552 rfs4_state_rele(sp); 7553 out: 7554 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7555 OPEN_DOWNGRADE4res *, resp); 7556 } 7557 7558 /* 7559 * The logic behind this function is detailed in the NFSv4 RFC in the 7560 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7561 * that section for explicit guidance to server behavior for 7562 * SETCLIENTID. 7563 */ 7564 void 7565 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7566 struct svc_req *req, struct compound_state *cs) 7567 { 7568 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7569 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7570 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7571 bool_t create = TRUE; 7572 char *addr, *netid; 7573 int len; 7574 7575 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7576 SETCLIENTID4args *, args); 7577 retry: 7578 newcp = cp_confirmed = cp_unconfirmed = NULL; 7579 7580 /* 7581 * In search of an EXISTING client matching the incoming 7582 * request to establish a new client identifier at the server 7583 */ 7584 create = TRUE; 7585 cp = rfs4_findclient(&args->client, &create, NULL); 7586 7587 /* Should never happen */ 7588 ASSERT(cp != NULL); 7589 7590 if (cp == NULL) { 7591 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7592 goto out; 7593 } 7594 7595 /* 7596 * Easiest case. Client identifier is newly created and is 7597 * unconfirmed. Also note that for this case, no other 7598 * entries exist for the client identifier. Nothing else to 7599 * check. Just setup the response and respond. 7600 */ 7601 if (create) { 7602 *cs->statusp = res->status = NFS4_OK; 7603 res->SETCLIENTID4res_u.resok4.clientid = cp->clientid; 7604 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7605 cp->confirm_verf; 7606 /* Setup callback information; CB_NULL confirmation later */ 7607 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 7608 7609 rfs4_client_rele(cp); 7610 goto out; 7611 } 7612 7613 /* 7614 * An existing, confirmed client may exist but it may not have 7615 * been active for at least one lease period. If so, then 7616 * "close" the client and create a new client identifier 7617 */ 7618 if (rfs4_lease_expired(cp)) { 7619 rfs4_client_close(cp); 7620 goto retry; 7621 } 7622 7623 if (cp->need_confirm == TRUE) 7624 cp_unconfirmed = cp; 7625 else 7626 cp_confirmed = cp; 7627 7628 cp = NULL; 7629 7630 /* 7631 * We have a confirmed client, now check for an 7632 * unconfimred entry 7633 */ 7634 if (cp_confirmed) { 7635 /* If creds don't match then client identifier is inuse */ 7636 if (!creds_ok(cp_confirmed->cr_set, req, cs)) { 7637 rfs4_cbinfo_t *cbp; 7638 /* 7639 * Some one else has established this client 7640 * id. Try and say * who they are. We will use 7641 * the call back address supplied by * the 7642 * first client. 7643 */ 7644 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7645 7646 addr = netid = NULL; 7647 7648 cbp = &cp_confirmed->cbinfo; 7649 if (cbp->cb_callback.cb_location.r_addr && 7650 cbp->cb_callback.cb_location.r_netid) { 7651 cb_client4 *cbcp = &cbp->cb_callback; 7652 7653 len = strlen(cbcp->cb_location.r_addr)+1; 7654 addr = kmem_alloc(len, KM_SLEEP); 7655 bcopy(cbcp->cb_location.r_addr, addr, len); 7656 len = strlen(cbcp->cb_location.r_netid)+1; 7657 netid = kmem_alloc(len, KM_SLEEP); 7658 bcopy(cbcp->cb_location.r_netid, netid, len); 7659 } 7660 7661 res->SETCLIENTID4res_u.client_using.r_addr = addr; 7662 res->SETCLIENTID4res_u.client_using.r_netid = netid; 7663 7664 rfs4_client_rele(cp_confirmed); 7665 } 7666 7667 /* 7668 * Confirmed, creds match, and verifier matches; must 7669 * be an update of the callback info 7670 */ 7671 if (cp_confirmed->nfs_client.verifier == 7672 args->client.verifier) { 7673 /* Setup callback information */ 7674 rfs4_client_setcb(cp_confirmed, &args->callback, 7675 args->callback_ident); 7676 7677 /* everything okay -- move ahead */ 7678 *cs->statusp = res->status = NFS4_OK; 7679 res->SETCLIENTID4res_u.resok4.clientid = 7680 cp_confirmed->clientid; 7681 7682 /* update the confirm_verifier and return it */ 7683 rfs4_client_scv_next(cp_confirmed); 7684 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7685 cp_confirmed->confirm_verf; 7686 7687 rfs4_client_rele(cp_confirmed); 7688 goto out; 7689 } 7690 7691 /* 7692 * Creds match but the verifier doesn't. Must search 7693 * for an unconfirmed client that would be replaced by 7694 * this request. 7695 */ 7696 create = FALSE; 7697 cp_unconfirmed = rfs4_findclient(&args->client, &create, 7698 cp_confirmed); 7699 } 7700 7701 /* 7702 * At this point, we have taken care of the brand new client 7703 * struct, INUSE case, update of an existing, and confirmed 7704 * client struct. 7705 */ 7706 7707 /* 7708 * check to see if things have changed while we originally 7709 * picked up the client struct. If they have, then return and 7710 * retry the processing of this SETCLIENTID request. 7711 */ 7712 if (cp_unconfirmed) { 7713 rfs4_dbe_lock(cp_unconfirmed->dbe); 7714 if (!cp_unconfirmed->need_confirm) { 7715 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7716 rfs4_client_rele(cp_unconfirmed); 7717 if (cp_confirmed) 7718 rfs4_client_rele(cp_confirmed); 7719 goto retry; 7720 } 7721 /* do away with the old unconfirmed one */ 7722 rfs4_dbe_invalidate(cp_unconfirmed->dbe); 7723 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7724 rfs4_client_rele(cp_unconfirmed); 7725 cp_unconfirmed = NULL; 7726 } 7727 7728 /* 7729 * This search will temporarily hide the confirmed client 7730 * struct while a new client struct is created as the 7731 * unconfirmed one. 7732 */ 7733 create = TRUE; 7734 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 7735 7736 ASSERT(newcp != NULL); 7737 7738 if (newcp == NULL) { 7739 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7740 rfs4_client_rele(cp_confirmed); 7741 goto out; 7742 } 7743 7744 /* 7745 * If one was not created, then a similar request must be in 7746 * process so release and start over with this one 7747 */ 7748 if (create != TRUE) { 7749 rfs4_client_rele(newcp); 7750 if (cp_confirmed) 7751 rfs4_client_rele(cp_confirmed); 7752 goto retry; 7753 } 7754 7755 *cs->statusp = res->status = NFS4_OK; 7756 res->SETCLIENTID4res_u.resok4.clientid = newcp->clientid; 7757 res->SETCLIENTID4res_u.resok4.setclientid_confirm = newcp->confirm_verf; 7758 /* Setup callback information; CB_NULL confirmation later */ 7759 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 7760 7761 newcp->cp_confirmed = cp_confirmed; 7762 7763 rfs4_client_rele(newcp); 7764 7765 out: 7766 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 7767 SETCLIENTID4res *, res); 7768 } 7769 7770 /*ARGSUSED*/ 7771 void 7772 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7773 struct svc_req *req, struct compound_state *cs) 7774 { 7775 SETCLIENTID_CONFIRM4args *args = 7776 &argop->nfs_argop4_u.opsetclientid_confirm; 7777 SETCLIENTID_CONFIRM4res *res = 7778 &resop->nfs_resop4_u.opsetclientid_confirm; 7779 rfs4_client_t *cp, *cptoclose = NULL; 7780 7781 DTRACE_NFSV4_2(op__setclientid__confirm__start, 7782 struct compound_state *, cs, 7783 SETCLIENTID_CONFIRM4args *, args); 7784 7785 *cs->statusp = res->status = NFS4_OK; 7786 7787 cp = rfs4_findclient_by_id(args->clientid, TRUE); 7788 7789 if (cp == NULL) { 7790 *cs->statusp = res->status = 7791 rfs4_check_clientid(&args->clientid, 1); 7792 goto out; 7793 } 7794 7795 if (!creds_ok(cp, req, cs)) { 7796 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7797 rfs4_client_rele(cp); 7798 goto out; 7799 } 7800 7801 /* If the verifier doesn't match, the record doesn't match */ 7802 if (cp->confirm_verf != args->setclientid_confirm) { 7803 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 7804 rfs4_client_rele(cp); 7805 goto out; 7806 } 7807 7808 rfs4_dbe_lock(cp->dbe); 7809 cp->need_confirm = FALSE; 7810 if (cp->cp_confirmed) { 7811 cptoclose = cp->cp_confirmed; 7812 cptoclose->ss_remove = 1; 7813 cp->cp_confirmed = NULL; 7814 } 7815 7816 /* 7817 * Update the client's associated server instance, if it's changed 7818 * since the client was created. 7819 */ 7820 if (rfs4_servinst(cp) != rfs4_cur_servinst) 7821 rfs4_servinst_assign(cp, rfs4_cur_servinst); 7822 7823 /* 7824 * Record clientid in stable storage. 7825 * Must be done after server instance has been assigned. 7826 */ 7827 rfs4_ss_clid(cp, req); 7828 7829 rfs4_dbe_unlock(cp->dbe); 7830 7831 if (cptoclose) 7832 /* don't need to rele, client_close does it */ 7833 rfs4_client_close(cptoclose); 7834 7835 /* If needed, initiate CB_NULL call for callback path */ 7836 rfs4_deleg_cb_check(cp); 7837 rfs4_update_lease(cp); 7838 7839 /* 7840 * Check to see if client can perform reclaims 7841 */ 7842 rfs4_ss_chkclid(cp); 7843 7844 rfs4_client_rele(cp); 7845 7846 out: 7847 DTRACE_NFSV4_2(op__setclientid__confirm__done, 7848 struct compound_state *, cs, 7849 SETCLIENTID_CONFIRM4 *, res); 7850 } 7851 7852 7853 /*ARGSUSED*/ 7854 void 7855 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 7856 struct svc_req *req, struct compound_state *cs) 7857 { 7858 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 7859 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 7860 rfs4_state_t *sp; 7861 nfsstat4 status; 7862 7863 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 7864 CLOSE4args *, args); 7865 7866 if (cs->vp == NULL) { 7867 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7868 goto out; 7869 } 7870 7871 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 7872 if (status != NFS4_OK) { 7873 *cs->statusp = resp->status = status; 7874 goto out; 7875 } 7876 7877 /* Ensure specified filehandle matches */ 7878 if (cs->vp != sp->finfo->vp) { 7879 rfs4_state_rele(sp); 7880 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7881 goto out; 7882 } 7883 7884 /* hold off other access to open_owner while we tinker */ 7885 rfs4_sw_enter(&sp->owner->oo_sw); 7886 7887 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7888 case NFS4_CHECK_STATEID_OKAY: 7889 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7890 resop) != NFS4_CHKSEQ_OKAY) { 7891 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7892 goto end; 7893 } 7894 break; 7895 case NFS4_CHECK_STATEID_OLD: 7896 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7897 goto end; 7898 case NFS4_CHECK_STATEID_BAD: 7899 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7900 goto end; 7901 case NFS4_CHECK_STATEID_EXPIRED: 7902 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7903 goto end; 7904 case NFS4_CHECK_STATEID_CLOSED: 7905 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7906 goto end; 7907 case NFS4_CHECK_STATEID_UNCONFIRMED: 7908 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7909 goto end; 7910 case NFS4_CHECK_STATEID_REPLAY: 7911 /* Check the sequence id for the open owner */ 7912 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7913 case NFS4_CHKSEQ_OKAY: 7914 /* 7915 * This is replayed stateid; if seqid matches 7916 * next expected, then client is using wrong seqid. 7917 */ 7918 /* FALL THROUGH */ 7919 case NFS4_CHKSEQ_BAD: 7920 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7921 goto end; 7922 case NFS4_CHKSEQ_REPLAY: 7923 /* 7924 * Note this case is the duplicate case so 7925 * resp->status is already set. 7926 */ 7927 *cs->statusp = resp->status; 7928 rfs4_update_lease(sp->owner->client); 7929 goto end; 7930 } 7931 break; 7932 default: 7933 ASSERT(FALSE); 7934 break; 7935 } 7936 7937 rfs4_dbe_lock(sp->dbe); 7938 7939 /* Update the stateid. */ 7940 next_stateid(&sp->stateid); 7941 resp->open_stateid = sp->stateid.stateid; 7942 7943 rfs4_dbe_unlock(sp->dbe); 7944 7945 rfs4_update_lease(sp->owner->client); 7946 rfs4_update_open_sequence(sp->owner); 7947 rfs4_update_open_resp(sp->owner, resop, NULL); 7948 7949 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7950 7951 *cs->statusp = resp->status = status; 7952 7953 end: 7954 rfs4_sw_exit(&sp->owner->oo_sw); 7955 rfs4_state_rele(sp); 7956 out: 7957 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 7958 CLOSE4res *, resp); 7959 } 7960 7961 /* 7962 * Manage the counts on the file struct and close all file locks 7963 */ 7964 /*ARGSUSED*/ 7965 void 7966 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 7967 bool_t close_of_client) 7968 { 7969 rfs4_file_t *fp = sp->finfo; 7970 rfs4_lo_state_t *lsp; 7971 struct shrlock shr; 7972 struct shr_locowner shr_loco; 7973 int fflags, s_access, s_deny; 7974 7975 fflags = s_access = s_deny = 0; 7976 /* 7977 * Decrement the count for each access and deny bit that this 7978 * state has contributed to the file. If the file counts go to zero 7979 * clear the appropriate bit in the appropriate mask. 7980 */ 7981 7982 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 7983 fp->access_read--; 7984 fflags |= FREAD; 7985 s_access |= F_RDACC; 7986 if (fp->access_read == 0) 7987 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7988 } 7989 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 7990 fp->access_write--; 7991 fflags |= FWRITE; 7992 s_access |= F_WRACC; 7993 if (fp->access_write == 0) 7994 fp->share_access &= ~OPEN4_SHARE_ACCESS_WRITE; 7995 } 7996 if (sp->share_deny & OPEN4_SHARE_DENY_READ) { 7997 fp->deny_read--; 7998 s_deny |= F_RDDNY; 7999 if (fp->deny_read == 0) 8000 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 8001 } 8002 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) { 8003 fp->deny_write--; 8004 s_deny |= F_WRDNY; 8005 if (fp->deny_write == 0) 8006 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8007 } 8008 8009 /* 8010 * If this call is part of the larger closing down of client 8011 * state then it is just easier to release all locks 8012 * associated with this client instead of going through each 8013 * individual file and cleaning locks there. 8014 */ 8015 if (close_of_client) { 8016 if (sp->owner->client->unlksys_completed == FALSE && 8017 sp->lockownerlist.next->lsp != NULL && 8018 sp->owner->client->sysidt != LM_NOSYSID) { 8019 /* Is the PxFS kernel module loaded? */ 8020 if (lm_remove_file_locks != NULL) { 8021 int new_sysid; 8022 8023 /* Encode the cluster nodeid in new sysid */ 8024 new_sysid = sp->owner->client->sysidt; 8025 lm_set_nlmid_flk(&new_sysid); 8026 8027 /* 8028 * This PxFS routine removes file locks for a 8029 * client over all nodes of a cluster. 8030 */ 8031 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8032 "lm_remove_file_locks(sysid=0x%x)\n", 8033 new_sysid)); 8034 (*lm_remove_file_locks)(new_sysid); 8035 } else { 8036 struct flock64 flk; 8037 8038 /* Release all locks for this client */ 8039 flk.l_type = F_UNLKSYS; 8040 flk.l_whence = 0; 8041 flk.l_start = 0; 8042 flk.l_len = 0; 8043 flk.l_sysid = sp->owner->client->sysidt; 8044 flk.l_pid = 0; 8045 (void) VOP_FRLOCK(sp->finfo->vp, F_SETLK, &flk, 8046 F_REMOTELOCK | FREAD | FWRITE, 8047 (u_offset_t)0, NULL, CRED(), NULL); 8048 } 8049 8050 sp->owner->client->unlksys_completed = TRUE; 8051 } 8052 } 8053 8054 /* 8055 * Release all locks on this file by this lock owner or at 8056 * least mark the locks as having been released 8057 */ 8058 for (lsp = sp->lockownerlist.next->lsp; lsp != NULL; 8059 lsp = lsp->lockownerlist.next->lsp) { 8060 8061 lsp->locks_cleaned = TRUE; 8062 8063 /* Was this already taken care of above? */ 8064 if (!close_of_client && 8065 sp->owner->client->sysidt != LM_NOSYSID) 8066 (void) cleanlocks(sp->finfo->vp, lsp->locker->pid, 8067 lsp->locker->client->sysidt); 8068 } 8069 8070 /* 8071 * Release any shrlocks associated with this open state ID. 8072 * This must be done before the rfs4_state gets marked closed. 8073 */ 8074 if (sp->owner->client->sysidt != LM_NOSYSID) { 8075 shr.s_access = s_access; 8076 shr.s_deny = s_deny; 8077 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 8078 shr.s_sysid = sp->owner->client->sysidt; 8079 shr_loco.sl_pid = shr.s_pid; 8080 shr_loco.sl_id = shr.s_sysid; 8081 shr.s_owner = (caddr_t)&shr_loco; 8082 shr.s_own_len = sizeof (shr_loco); 8083 (void) vop_shrlock(sp->finfo->vp, F_UNSHARE, &shr, fflags); 8084 } 8085 8086 (void) VOP_CLOSE(fp->vp, fflags, 1, (offset_t)0, cr, NULL); 8087 } 8088 8089 /* 8090 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8091 */ 8092 static nfsstat4 8093 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8094 { 8095 rfs4_lockowner_t *lo; 8096 rfs4_client_t *cp; 8097 uint32_t len; 8098 8099 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8100 if (lo != NULL) { 8101 cp = lo->client; 8102 if (rfs4_lease_expired(cp)) { 8103 rfs4_lockowner_rele(lo); 8104 rfs4_dbe_hold(cp->dbe); 8105 rfs4_client_close(cp); 8106 return (NFS4ERR_EXPIRED); 8107 } 8108 dp->owner.clientid = lo->owner.clientid; 8109 len = lo->owner.owner_len; 8110 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8111 bcopy(lo->owner.owner_val, dp->owner.owner_val, len); 8112 dp->owner.owner_len = len; 8113 rfs4_lockowner_rele(lo); 8114 goto finish; 8115 } 8116 8117 /* 8118 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8119 * of the client id contain the boot time for a NFS4 lock. So we 8120 * fabricate and identity by setting clientid to the sysid, and 8121 * the lock owner to the pid. 8122 */ 8123 dp->owner.clientid = flk->l_sysid; 8124 len = sizeof (pid_t); 8125 dp->owner.owner_len = len; 8126 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8127 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8128 finish: 8129 dp->offset = flk->l_start; 8130 dp->length = flk->l_len; 8131 8132 if (flk->l_type == F_RDLCK) 8133 dp->locktype = READ_LT; 8134 else if (flk->l_type == F_WRLCK) 8135 dp->locktype = WRITE_LT; 8136 else 8137 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8138 8139 return (NFS4_OK); 8140 } 8141 8142 static int 8143 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8144 { 8145 int error; 8146 struct flock64 flk; 8147 int i; 8148 clock_t delaytime; 8149 int cmd; 8150 8151 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8152 retry: 8153 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8154 8155 for (i = 0; i < rfs4_maxlock_tries; i++) { 8156 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8157 error = VOP_FRLOCK(vp, cmd, 8158 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8159 8160 if (error != EAGAIN && error != EACCES) 8161 break; 8162 8163 if (i < rfs4_maxlock_tries - 1) { 8164 delay(delaytime); 8165 delaytime *= 2; 8166 } 8167 } 8168 8169 if (error == EAGAIN || error == EACCES) { 8170 /* Get the owner of the lock */ 8171 flk = *flock; 8172 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8173 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8174 (u_offset_t)0, NULL, cred, NULL) == 0) { 8175 if (flk.l_type == F_UNLCK) { 8176 /* No longer locked, retry */ 8177 goto retry; 8178 } 8179 *flock = flk; 8180 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8181 F_GETLK, &flk); 8182 } 8183 } 8184 8185 return (error); 8186 } 8187 8188 /*ARGSUSED*/ 8189 static nfsstat4 8190 rfs4_do_lock(rfs4_lo_state_t *lp, nfs_lock_type4 locktype, 8191 seqid4 seqid, offset4 offset, 8192 length4 length, cred_t *cred, nfs_resop4 *resop) 8193 { 8194 nfsstat4 status; 8195 rfs4_lockowner_t *lo = lp->locker; 8196 rfs4_state_t *sp = lp->state; 8197 struct flock64 flock; 8198 int16_t ltype; 8199 int flag; 8200 int error; 8201 sysid_t sysid; 8202 LOCK4res *lres; 8203 8204 if (rfs4_lease_expired(lo->client)) { 8205 return (NFS4ERR_EXPIRED); 8206 } 8207 8208 if ((status = rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 8209 return (status); 8210 8211 /* Check for zero length. To lock to end of file use all ones for V4 */ 8212 if (length == 0) 8213 return (NFS4ERR_INVAL); 8214 else if (length == (length4)(~0)) 8215 length = 0; /* Posix to end of file */ 8216 8217 retry: 8218 rfs4_dbe_lock(sp->dbe); 8219 8220 8221 if (resop->resop != OP_LOCKU) { 8222 switch (locktype) { 8223 case READ_LT: 8224 case READW_LT: 8225 if ((sp->share_access 8226 & OPEN4_SHARE_ACCESS_READ) == 0) { 8227 rfs4_dbe_unlock(sp->dbe); 8228 8229 return (NFS4ERR_OPENMODE); 8230 } 8231 ltype = F_RDLCK; 8232 break; 8233 case WRITE_LT: 8234 case WRITEW_LT: 8235 if ((sp->share_access 8236 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8237 rfs4_dbe_unlock(sp->dbe); 8238 8239 return (NFS4ERR_OPENMODE); 8240 } 8241 ltype = F_WRLCK; 8242 break; 8243 } 8244 } else 8245 ltype = F_UNLCK; 8246 8247 flock.l_type = ltype; 8248 flock.l_whence = 0; /* SEEK_SET */ 8249 flock.l_start = offset; 8250 flock.l_len = length; 8251 flock.l_sysid = sysid; 8252 flock.l_pid = lp->locker->pid; 8253 8254 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8255 if (flock.l_len < 0 || flock.l_start < 0) { 8256 rfs4_dbe_unlock(sp->dbe); 8257 return (NFS4ERR_INVAL); 8258 } 8259 8260 /* 8261 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8262 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8263 */ 8264 flag = (int)sp->share_access | F_REMOTELOCK; 8265 8266 error = setlock(sp->finfo->vp, &flock, flag, cred); 8267 if (error == 0) { 8268 rfs4_dbe_lock(lp->dbe); 8269 next_stateid(&lp->lockid); 8270 rfs4_dbe_unlock(lp->dbe); 8271 } 8272 8273 rfs4_dbe_unlock(sp->dbe); 8274 8275 /* 8276 * N.B. We map error values to nfsv4 errors. This is differrent 8277 * than puterrno4 routine. 8278 */ 8279 switch (error) { 8280 case 0: 8281 status = NFS4_OK; 8282 break; 8283 case EAGAIN: 8284 case EACCES: /* Old value */ 8285 /* Can only get here if op is OP_LOCK */ 8286 ASSERT(resop->resop == OP_LOCK); 8287 lres = &resop->nfs_resop4_u.oplock; 8288 status = NFS4ERR_DENIED; 8289 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8290 == NFS4ERR_EXPIRED) 8291 goto retry; 8292 break; 8293 case ENOLCK: 8294 status = NFS4ERR_DELAY; 8295 break; 8296 case EOVERFLOW: 8297 status = NFS4ERR_INVAL; 8298 break; 8299 case EINVAL: 8300 status = NFS4ERR_NOTSUPP; 8301 break; 8302 default: 8303 cmn_err(CE_WARN, "rfs4_do_lock: unexpected errno (%d)", error); 8304 status = NFS4ERR_SERVERFAULT; 8305 break; 8306 } 8307 8308 return (status); 8309 } 8310 8311 /*ARGSUSED*/ 8312 void 8313 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8314 struct svc_req *req, struct compound_state *cs) 8315 { 8316 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8317 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8318 nfsstat4 status; 8319 stateid4 *stateid; 8320 rfs4_lockowner_t *lo; 8321 rfs4_client_t *cp; 8322 rfs4_state_t *sp = NULL; 8323 rfs4_lo_state_t *lsp = NULL; 8324 bool_t ls_sw_held = FALSE; 8325 bool_t create = TRUE; 8326 bool_t lcreate = TRUE; 8327 bool_t dup_lock = FALSE; 8328 int rc; 8329 8330 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8331 LOCK4args *, args); 8332 8333 if (cs->vp == NULL) { 8334 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8335 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8336 cs, LOCK4res *, resp); 8337 return; 8338 } 8339 8340 if (args->locker.new_lock_owner) { 8341 /* Create a new lockowner for this instance */ 8342 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8343 8344 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8345 8346 stateid = &olo->open_stateid; 8347 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8348 if (status != NFS4_OK) { 8349 NFS4_DEBUG(rfs4_debug, 8350 (CE_NOTE, "Get state failed in lock %d", status)); 8351 *cs->statusp = resp->status = status; 8352 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8353 cs, LOCK4res *, resp); 8354 return; 8355 } 8356 8357 /* Ensure specified filehandle matches */ 8358 if (cs->vp != sp->finfo->vp) { 8359 rfs4_state_rele(sp); 8360 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8361 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8362 cs, LOCK4res *, resp); 8363 return; 8364 } 8365 8366 /* hold off other access to open_owner while we tinker */ 8367 rfs4_sw_enter(&sp->owner->oo_sw); 8368 8369 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8370 case NFS4_CHECK_STATEID_OLD: 8371 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8372 goto end; 8373 case NFS4_CHECK_STATEID_BAD: 8374 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8375 goto end; 8376 case NFS4_CHECK_STATEID_EXPIRED: 8377 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8378 goto end; 8379 case NFS4_CHECK_STATEID_UNCONFIRMED: 8380 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8381 goto end; 8382 case NFS4_CHECK_STATEID_CLOSED: 8383 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8384 goto end; 8385 case NFS4_CHECK_STATEID_OKAY: 8386 case NFS4_CHECK_STATEID_REPLAY: 8387 switch (rfs4_check_olo_seqid(olo->open_seqid, 8388 sp->owner, resop)) { 8389 case NFS4_CHKSEQ_OKAY: 8390 if (rc == NFS4_CHECK_STATEID_OKAY) 8391 break; 8392 /* 8393 * This is replayed stateid; if seqid 8394 * matches next expected, then client 8395 * is using wrong seqid. 8396 */ 8397 /* FALLTHROUGH */ 8398 case NFS4_CHKSEQ_BAD: 8399 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8400 goto end; 8401 case NFS4_CHKSEQ_REPLAY: 8402 /* This is a duplicate LOCK request */ 8403 dup_lock = TRUE; 8404 8405 /* 8406 * For a duplicate we do not want to 8407 * create a new lockowner as it should 8408 * already exist. 8409 * Turn off the lockowner create flag. 8410 */ 8411 lcreate = FALSE; 8412 } 8413 break; 8414 } 8415 8416 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8417 if (lo == NULL) { 8418 NFS4_DEBUG(rfs4_debug, 8419 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8420 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8421 goto end; 8422 } 8423 8424 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8425 if (lsp == NULL) { 8426 rfs4_update_lease(sp->owner->client); 8427 /* 8428 * Only update theh open_seqid if this is not 8429 * a duplicate request 8430 */ 8431 if (dup_lock == FALSE) { 8432 rfs4_update_open_sequence(sp->owner); 8433 } 8434 8435 NFS4_DEBUG(rfs4_debug, 8436 (CE_NOTE, "rfs4_op_lock: no state")); 8437 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8438 rfs4_update_open_resp(sp->owner, resop, NULL); 8439 rfs4_lockowner_rele(lo); 8440 goto end; 8441 } 8442 8443 /* 8444 * This is the new_lock_owner branch and the client is 8445 * supposed to be associating a new lock_owner with 8446 * the open file at this point. If we find that a 8447 * lock_owner/state association already exists and a 8448 * successful LOCK request was returned to the client, 8449 * an error is returned to the client since this is 8450 * not appropriate. The client should be using the 8451 * existing lock_owner branch. 8452 */ 8453 if (dup_lock == FALSE && create == FALSE) { 8454 if (lsp->lock_completed == TRUE) { 8455 *cs->statusp = 8456 resp->status = NFS4ERR_BAD_SEQID; 8457 rfs4_lockowner_rele(lo); 8458 goto end; 8459 } 8460 } 8461 8462 rfs4_update_lease(sp->owner->client); 8463 8464 /* 8465 * Only update theh open_seqid if this is not 8466 * a duplicate request 8467 */ 8468 if (dup_lock == FALSE) { 8469 rfs4_update_open_sequence(sp->owner); 8470 } 8471 8472 /* 8473 * If this is a duplicate lock request, just copy the 8474 * previously saved reply and return. 8475 */ 8476 if (dup_lock == TRUE) { 8477 /* verify that lock_seqid's match */ 8478 if (lsp->seqid != olo->lock_seqid) { 8479 NFS4_DEBUG(rfs4_debug, 8480 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8481 "lsp->seqid=%d old->seqid=%d", 8482 lsp->seqid, olo->lock_seqid)); 8483 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8484 } else { 8485 rfs4_copy_reply(resop, lsp->reply); 8486 /* 8487 * Make sure to copy the just 8488 * retrieved reply status into the 8489 * overall compound status 8490 */ 8491 *cs->statusp = resp->status; 8492 } 8493 rfs4_lockowner_rele(lo); 8494 goto end; 8495 } 8496 8497 rfs4_dbe_lock(lsp->dbe); 8498 8499 /* Make sure to update the lock sequence id */ 8500 lsp->seqid = olo->lock_seqid; 8501 8502 NFS4_DEBUG(rfs4_debug, 8503 (CE_NOTE, "Lock seqid established as %d", lsp->seqid)); 8504 8505 /* 8506 * This is used to signify the newly created lockowner 8507 * stateid and its sequence number. The checks for 8508 * sequence number and increment don't occur on the 8509 * very first lock request for a lockowner. 8510 */ 8511 lsp->skip_seqid_check = TRUE; 8512 8513 /* hold off other access to lsp while we tinker */ 8514 rfs4_sw_enter(&lsp->ls_sw); 8515 ls_sw_held = TRUE; 8516 8517 rfs4_dbe_unlock(lsp->dbe); 8518 8519 rfs4_lockowner_rele(lo); 8520 } else { 8521 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8522 /* get lsp and hold the lock on the underlying file struct */ 8523 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8524 != NFS4_OK) { 8525 *cs->statusp = resp->status = status; 8526 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8527 cs, LOCK4res *, resp); 8528 return; 8529 } 8530 create = FALSE; /* We didn't create lsp */ 8531 8532 /* Ensure specified filehandle matches */ 8533 if (cs->vp != lsp->state->finfo->vp) { 8534 rfs4_lo_state_rele(lsp, TRUE); 8535 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8536 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8537 cs, LOCK4res *, resp); 8538 return; 8539 } 8540 8541 /* hold off other access to lsp while we tinker */ 8542 rfs4_sw_enter(&lsp->ls_sw); 8543 ls_sw_held = TRUE; 8544 8545 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8546 /* 8547 * The stateid looks like it was okay (expected to be 8548 * the next one) 8549 */ 8550 case NFS4_CHECK_STATEID_OKAY: 8551 /* 8552 * The sequence id is now checked. Determine 8553 * if this is a replay or if it is in the 8554 * expected (next) sequence. In the case of a 8555 * replay, there are two replay conditions 8556 * that may occur. The first is the normal 8557 * condition where a LOCK is done with a 8558 * NFS4_OK response and the stateid is 8559 * updated. That case is handled below when 8560 * the stateid is identified as a REPLAY. The 8561 * second is the case where an error is 8562 * returned, like NFS4ERR_DENIED, and the 8563 * sequence number is updated but the stateid 8564 * is not updated. This second case is dealt 8565 * with here. So it may seem odd that the 8566 * stateid is okay but the sequence id is a 8567 * replay but it is okay. 8568 */ 8569 switch (rfs4_check_lock_seqid( 8570 args->locker.locker4_u.lock_owner.lock_seqid, 8571 lsp, resop)) { 8572 case NFS4_CHKSEQ_REPLAY: 8573 if (resp->status != NFS4_OK) { 8574 /* 8575 * Here is our replay and need 8576 * to verify that the last 8577 * response was an error. 8578 */ 8579 *cs->statusp = resp->status; 8580 goto end; 8581 } 8582 /* 8583 * This is done since the sequence id 8584 * looked like a replay but it didn't 8585 * pass our check so a BAD_SEQID is 8586 * returned as a result. 8587 */ 8588 /*FALLTHROUGH*/ 8589 case NFS4_CHKSEQ_BAD: 8590 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8591 goto end; 8592 case NFS4_CHKSEQ_OKAY: 8593 /* Everything looks okay move ahead */ 8594 break; 8595 } 8596 break; 8597 case NFS4_CHECK_STATEID_OLD: 8598 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8599 goto end; 8600 case NFS4_CHECK_STATEID_BAD: 8601 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8602 goto end; 8603 case NFS4_CHECK_STATEID_EXPIRED: 8604 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8605 goto end; 8606 case NFS4_CHECK_STATEID_CLOSED: 8607 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8608 goto end; 8609 case NFS4_CHECK_STATEID_REPLAY: 8610 switch (rfs4_check_lock_seqid( 8611 args->locker.locker4_u.lock_owner.lock_seqid, 8612 lsp, resop)) { 8613 case NFS4_CHKSEQ_OKAY: 8614 /* 8615 * This is a replayed stateid; if 8616 * seqid matches the next expected, 8617 * then client is using wrong seqid. 8618 */ 8619 case NFS4_CHKSEQ_BAD: 8620 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8621 goto end; 8622 case NFS4_CHKSEQ_REPLAY: 8623 rfs4_update_lease(lsp->locker->client); 8624 *cs->statusp = status = resp->status; 8625 goto end; 8626 } 8627 break; 8628 default: 8629 ASSERT(FALSE); 8630 break; 8631 } 8632 8633 rfs4_update_lock_sequence(lsp); 8634 rfs4_update_lease(lsp->locker->client); 8635 } 8636 8637 /* 8638 * NFS4 only allows locking on regular files, so 8639 * verify type of object. 8640 */ 8641 if (cs->vp->v_type != VREG) { 8642 if (cs->vp->v_type == VDIR) 8643 status = NFS4ERR_ISDIR; 8644 else 8645 status = NFS4ERR_INVAL; 8646 goto out; 8647 } 8648 8649 cp = lsp->state->owner->client; 8650 8651 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 8652 status = NFS4ERR_GRACE; 8653 goto out; 8654 } 8655 8656 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->can_reclaim) { 8657 status = NFS4ERR_NO_GRACE; 8658 goto out; 8659 } 8660 8661 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 8662 status = NFS4ERR_NO_GRACE; 8663 goto out; 8664 } 8665 8666 if (lsp->state->finfo->dinfo->dtype == OPEN_DELEGATE_WRITE) 8667 cs->deleg = TRUE; 8668 8669 status = rfs4_do_lock(lsp, args->locktype, 8670 args->locker.locker4_u.lock_owner.lock_seqid, 8671 args->offset, args->length, cs->cr, resop); 8672 8673 out: 8674 lsp->skip_seqid_check = FALSE; 8675 8676 *cs->statusp = resp->status = status; 8677 8678 if (status == NFS4_OK) { 8679 resp->LOCK4res_u.lock_stateid = lsp->lockid.stateid; 8680 lsp->lock_completed = TRUE; 8681 } 8682 /* 8683 * Only update the "OPEN" response here if this was a new 8684 * lock_owner 8685 */ 8686 if (sp) 8687 rfs4_update_open_resp(sp->owner, resop, NULL); 8688 8689 rfs4_update_lock_resp(lsp, resop); 8690 8691 end: 8692 if (lsp) { 8693 if (ls_sw_held) 8694 rfs4_sw_exit(&lsp->ls_sw); 8695 /* 8696 * If an sp obtained, then the lsp does not represent 8697 * a lock on the file struct. 8698 */ 8699 if (sp != NULL) 8700 rfs4_lo_state_rele(lsp, FALSE); 8701 else 8702 rfs4_lo_state_rele(lsp, TRUE); 8703 } 8704 if (sp) { 8705 rfs4_sw_exit(&sp->owner->oo_sw); 8706 rfs4_state_rele(sp); 8707 } 8708 8709 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 8710 LOCK4res *, resp); 8711 } 8712 8713 /* free function for LOCK/LOCKT */ 8714 static void 8715 lock_denied_free(nfs_resop4 *resop) 8716 { 8717 LOCK4denied *dp = NULL; 8718 8719 switch (resop->resop) { 8720 case OP_LOCK: 8721 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 8722 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 8723 break; 8724 case OP_LOCKT: 8725 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 8726 dp = &resop->nfs_resop4_u.oplockt.denied; 8727 break; 8728 default: 8729 break; 8730 } 8731 8732 if (dp) 8733 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 8734 } 8735 8736 /*ARGSUSED*/ 8737 void 8738 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 8739 struct svc_req *req, struct compound_state *cs) 8740 { 8741 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 8742 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 8743 nfsstat4 status; 8744 stateid4 *stateid = &args->lock_stateid; 8745 rfs4_lo_state_t *lsp; 8746 8747 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 8748 LOCKU4args *, args); 8749 8750 if (cs->vp == NULL) { 8751 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8752 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8753 LOCKU4res *, resp); 8754 return; 8755 } 8756 8757 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 8758 *cs->statusp = resp->status = status; 8759 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8760 LOCKU4res *, resp); 8761 return; 8762 } 8763 8764 /* Ensure specified filehandle matches */ 8765 if (cs->vp != lsp->state->finfo->vp) { 8766 rfs4_lo_state_rele(lsp, TRUE); 8767 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8768 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8769 LOCKU4res *, resp); 8770 return; 8771 } 8772 8773 /* hold off other access to lsp while we tinker */ 8774 rfs4_sw_enter(&lsp->ls_sw); 8775 8776 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8777 case NFS4_CHECK_STATEID_OKAY: 8778 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 8779 != NFS4_CHKSEQ_OKAY) { 8780 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8781 goto end; 8782 } 8783 break; 8784 case NFS4_CHECK_STATEID_OLD: 8785 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8786 goto end; 8787 case NFS4_CHECK_STATEID_BAD: 8788 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8789 goto end; 8790 case NFS4_CHECK_STATEID_EXPIRED: 8791 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8792 goto end; 8793 case NFS4_CHECK_STATEID_CLOSED: 8794 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8795 goto end; 8796 case NFS4_CHECK_STATEID_REPLAY: 8797 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 8798 case NFS4_CHKSEQ_OKAY: 8799 /* 8800 * This is a replayed stateid; if 8801 * seqid matches the next expected, 8802 * then client is using wrong seqid. 8803 */ 8804 case NFS4_CHKSEQ_BAD: 8805 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8806 goto end; 8807 case NFS4_CHKSEQ_REPLAY: 8808 rfs4_update_lease(lsp->locker->client); 8809 *cs->statusp = status = resp->status; 8810 goto end; 8811 } 8812 break; 8813 default: 8814 ASSERT(FALSE); 8815 break; 8816 } 8817 8818 rfs4_update_lock_sequence(lsp); 8819 rfs4_update_lease(lsp->locker->client); 8820 8821 /* 8822 * NFS4 only allows locking on regular files, so 8823 * verify type of object. 8824 */ 8825 if (cs->vp->v_type != VREG) { 8826 if (cs->vp->v_type == VDIR) 8827 status = NFS4ERR_ISDIR; 8828 else 8829 status = NFS4ERR_INVAL; 8830 goto out; 8831 } 8832 8833 if (rfs4_clnt_in_grace(lsp->state->owner->client)) { 8834 status = NFS4ERR_GRACE; 8835 goto out; 8836 } 8837 8838 status = rfs4_do_lock(lsp, args->locktype, 8839 args->seqid, args->offset, args->length, cs->cr, resop); 8840 8841 out: 8842 *cs->statusp = resp->status = status; 8843 8844 if (status == NFS4_OK) 8845 resp->lock_stateid = lsp->lockid.stateid; 8846 8847 rfs4_update_lock_resp(lsp, resop); 8848 8849 end: 8850 rfs4_sw_exit(&lsp->ls_sw); 8851 rfs4_lo_state_rele(lsp, TRUE); 8852 8853 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8854 LOCKU4res *, resp); 8855 } 8856 8857 /* 8858 * LOCKT is a best effort routine, the client can not be guaranteed that 8859 * the status return is still in effect by the time the reply is received. 8860 * They are numerous race conditions in this routine, but we are not required 8861 * and can not be accurate. 8862 */ 8863 /*ARGSUSED*/ 8864 void 8865 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 8866 struct svc_req *req, struct compound_state *cs) 8867 { 8868 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 8869 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 8870 rfs4_lockowner_t *lo; 8871 rfs4_client_t *cp; 8872 bool_t create = FALSE; 8873 struct flock64 flk; 8874 int error; 8875 int flag = FREAD | FWRITE; 8876 int ltype; 8877 length4 posix_length; 8878 sysid_t sysid; 8879 pid_t pid; 8880 8881 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 8882 LOCKT4args *, args); 8883 8884 if (cs->vp == NULL) { 8885 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8886 goto out; 8887 } 8888 8889 /* 8890 * NFS4 only allows locking on regular files, so 8891 * verify type of object. 8892 */ 8893 if (cs->vp->v_type != VREG) { 8894 if (cs->vp->v_type == VDIR) 8895 *cs->statusp = resp->status = NFS4ERR_ISDIR; 8896 else 8897 *cs->statusp = resp->status = NFS4ERR_INVAL; 8898 goto out; 8899 } 8900 8901 /* 8902 * Check out the clientid to ensure the server knows about it 8903 * so that we correctly inform the client of a server reboot. 8904 */ 8905 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 8906 == NULL) { 8907 *cs->statusp = resp->status = 8908 rfs4_check_clientid(&args->owner.clientid, 0); 8909 goto out; 8910 } 8911 if (rfs4_lease_expired(cp)) { 8912 rfs4_client_close(cp); 8913 /* 8914 * Protocol doesn't allow returning NFS4ERR_STALE as 8915 * other operations do on this check so STALE_CLIENTID 8916 * is returned instead 8917 */ 8918 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 8919 goto out; 8920 } 8921 8922 if (rfs4_clnt_in_grace(cp) && !(cp->can_reclaim)) { 8923 *cs->statusp = resp->status = NFS4ERR_GRACE; 8924 rfs4_client_rele(cp); 8925 goto out; 8926 } 8927 rfs4_client_rele(cp); 8928 8929 resp->status = NFS4_OK; 8930 8931 switch (args->locktype) { 8932 case READ_LT: 8933 case READW_LT: 8934 ltype = F_RDLCK; 8935 break; 8936 case WRITE_LT: 8937 case WRITEW_LT: 8938 ltype = F_WRLCK; 8939 break; 8940 } 8941 8942 posix_length = args->length; 8943 /* Check for zero length. To lock to end of file use all ones for V4 */ 8944 if (posix_length == 0) { 8945 *cs->statusp = resp->status = NFS4ERR_INVAL; 8946 goto out; 8947 } else if (posix_length == (length4)(~0)) { 8948 posix_length = 0; /* Posix to end of file */ 8949 } 8950 8951 /* Find or create a lockowner */ 8952 lo = rfs4_findlockowner(&args->owner, &create); 8953 8954 if (lo) { 8955 pid = lo->pid; 8956 if ((resp->status = 8957 rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 8958 goto err; 8959 } else { 8960 pid = 0; 8961 sysid = lockt_sysid; 8962 } 8963 retry: 8964 flk.l_type = ltype; 8965 flk.l_whence = 0; /* SEEK_SET */ 8966 flk.l_start = args->offset; 8967 flk.l_len = posix_length; 8968 flk.l_sysid = sysid; 8969 flk.l_pid = pid; 8970 flag |= F_REMOTELOCK; 8971 8972 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 8973 8974 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8975 if (flk.l_len < 0 || flk.l_start < 0) { 8976 resp->status = NFS4ERR_INVAL; 8977 goto err; 8978 } 8979 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 8980 NULL, cs->cr, NULL); 8981 8982 /* 8983 * N.B. We map error values to nfsv4 errors. This is differrent 8984 * than puterrno4 routine. 8985 */ 8986 switch (error) { 8987 case 0: 8988 if (flk.l_type == F_UNLCK) 8989 resp->status = NFS4_OK; 8990 else { 8991 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 8992 goto retry; 8993 resp->status = NFS4ERR_DENIED; 8994 } 8995 break; 8996 case EOVERFLOW: 8997 resp->status = NFS4ERR_INVAL; 8998 break; 8999 case EINVAL: 9000 resp->status = NFS4ERR_NOTSUPP; 9001 break; 9002 default: 9003 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9004 error); 9005 resp->status = NFS4ERR_SERVERFAULT; 9006 break; 9007 } 9008 9009 err: 9010 if (lo) 9011 rfs4_lockowner_rele(lo); 9012 *cs->statusp = resp->status; 9013 out: 9014 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9015 LOCKT4res *, resp); 9016 } 9017 9018 static int 9019 vop_shrlock(vnode_t *vp, int cmd, struct shrlock *sp, int fflags) 9020 { 9021 int err; 9022 9023 if (cmd == F_UNSHARE && sp->s_deny == 0 && sp->s_access == 0) 9024 return (0); 9025 9026 err = VOP_SHRLOCK(vp, cmd, sp, fflags, CRED(), NULL); 9027 9028 NFS4_DEBUG(rfs4_shrlock_debug, 9029 (CE_NOTE, "rfs4_shrlock %s vp=%p acc=%d dny=%d sysid=%d " 9030 "pid=%d err=%d\n", cmd == F_UNSHARE ? "UNSHR" : "SHARE", 9031 (void *) vp, sp->s_access, sp->s_deny, sp->s_sysid, sp->s_pid, 9032 err)); 9033 9034 return (err); 9035 } 9036 9037 static int 9038 rfs4_shrlock(rfs4_state_t *sp, int cmd) 9039 { 9040 struct shrlock shr; 9041 struct shr_locowner shr_loco; 9042 int fflags; 9043 9044 fflags = shr.s_access = shr.s_deny = 0; 9045 9046 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 9047 fflags |= FREAD; 9048 shr.s_access |= F_RDACC; 9049 } 9050 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 9051 fflags |= FWRITE; 9052 shr.s_access |= F_WRACC; 9053 } 9054 if (sp->share_deny & OPEN4_SHARE_DENY_READ) 9055 shr.s_deny |= F_RDDNY; 9056 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) 9057 shr.s_deny |= F_WRDNY; 9058 9059 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 9060 shr.s_sysid = sp->owner->client->sysidt; 9061 shr_loco.sl_pid = shr.s_pid; 9062 shr_loco.sl_id = shr.s_sysid; 9063 shr.s_owner = (caddr_t)&shr_loco; 9064 shr.s_own_len = sizeof (shr_loco); 9065 return (vop_shrlock(sp->finfo->vp, cmd, &shr, fflags)); 9066 } 9067 9068 static int 9069 rfs4_share(rfs4_state_t *sp) 9070 { 9071 int cmd; 9072 cmd = nbl_need_check(sp->finfo->vp) ? F_SHARE_NBMAND : F_SHARE; 9073 return (rfs4_shrlock(sp, cmd)); 9074 } 9075 9076 void 9077 rfs4_unshare(rfs4_state_t *sp) 9078 { 9079 (void) rfs4_shrlock(sp, F_UNSHARE); 9080 } 9081