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 /* 2911 * If file system supports passing ACE mask to VOP_ACCESS then 2912 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 2913 */ 2914 2915 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 2916 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 2917 V_ACE_MASK, cs->cr, NULL); 2918 else 2919 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 2920 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 2921 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 2922 2923 if (error) { 2924 *cs->statusp = resp->status = puterrno4(EACCES); 2925 goto out; 2926 } 2927 2928 /* 2929 * The CREATE_XATTR_DIR VOP flag cannot be specified if 2930 * the file system is exported read-only -- regardless of 2931 * createdir flag. Otherwise the attrdir would be created 2932 * (assuming server fs isn't mounted readonly locally). If 2933 * VOP_LOOKUP returns ENOENT in this case, the error will 2934 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 2935 * because specfs has no VOP_LOOKUP op, so the macro would 2936 * return ENOSYS. EINVAL is returned by all (current) 2937 * Solaris file system implementations when any of their 2938 * restrictions are violated (xattr(dir) can't have xattrdir). 2939 * Returning NOTSUPP is more appropriate in this case 2940 * because the object will never be able to have an attrdir. 2941 */ 2942 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 2943 lookup_flags |= CREATE_XATTR_DIR; 2944 2945 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 2946 NULL, NULL, NULL); 2947 2948 if (error) { 2949 if (error == ENOENT && args->createdir && exp_ro) 2950 *cs->statusp = resp->status = puterrno4(EROFS); 2951 else if (error == EINVAL || error == ENOSYS) 2952 *cs->statusp = resp->status = puterrno4(ENOTSUP); 2953 else 2954 *cs->statusp = resp->status = puterrno4(error); 2955 goto out; 2956 } 2957 2958 ASSERT(avp->v_flag & V_XATTRDIR); 2959 2960 error = makefh4(&cs->fh, avp, cs->exi); 2961 2962 if (error) { 2963 VN_RELE(avp); 2964 *cs->statusp = resp->status = puterrno4(error); 2965 goto out; 2966 } 2967 2968 VN_RELE(cs->vp); 2969 cs->vp = avp; 2970 2971 /* 2972 * There is no requirement for an attrdir fh flag 2973 * because the attrdir has a vnode flag to distinguish 2974 * it from regular (non-xattr) directories. The 2975 * FH4_ATTRDIR flag is set for future sanity checks. 2976 */ 2977 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 2978 *cs->statusp = resp->status = NFS4_OK; 2979 2980 out: 2981 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 2982 OPENATTR4res *, resp); 2983 } 2984 2985 static int 2986 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 2987 caller_context_t *ct) 2988 { 2989 int error; 2990 int i; 2991 clock_t delaytime; 2992 2993 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 2994 2995 /* 2996 * Don't block on mandatory locks. If this routine returns 2997 * EAGAIN, the caller should return NFS4ERR_LOCKED. 2998 */ 2999 uio->uio_fmode = FNONBLOCK; 3000 3001 for (i = 0; i < rfs4_maxlock_tries; i++) { 3002 3003 3004 if (direction == FREAD) { 3005 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3006 error = VOP_READ(vp, uio, ioflag, cred, ct); 3007 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3008 } else { 3009 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3010 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3011 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3012 } 3013 3014 if (error != EAGAIN) 3015 break; 3016 3017 if (i < rfs4_maxlock_tries - 1) { 3018 delay(delaytime); 3019 delaytime *= 2; 3020 } 3021 } 3022 3023 return (error); 3024 } 3025 3026 /* ARGSUSED */ 3027 static void 3028 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3029 struct compound_state *cs) 3030 { 3031 READ4args *args = &argop->nfs_argop4_u.opread; 3032 READ4res *resp = &resop->nfs_resop4_u.opread; 3033 int error; 3034 int verror; 3035 vnode_t *vp; 3036 struct vattr va; 3037 struct iovec iov; 3038 struct uio uio; 3039 u_offset_t offset; 3040 bool_t *deleg = &cs->deleg; 3041 nfsstat4 stat; 3042 int in_crit = 0; 3043 mblk_t *mp; 3044 int alloc_err = 0; 3045 caller_context_t ct; 3046 3047 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3048 READ4args, args); 3049 3050 vp = cs->vp; 3051 if (vp == NULL) { 3052 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3053 goto out; 3054 } 3055 if (cs->access == CS_ACCESS_DENIED) { 3056 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3057 goto out; 3058 } 3059 3060 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3061 deleg, TRUE, &ct)) != NFS4_OK) { 3062 *cs->statusp = resp->status = stat; 3063 goto out; 3064 } 3065 3066 /* 3067 * Enter the critical region before calling VOP_RWLOCK 3068 * to avoid a deadlock with write requests. 3069 */ 3070 if (nbl_need_check(vp)) { 3071 nbl_start_crit(vp, RW_READER); 3072 in_crit = 1; 3073 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3074 &ct)) { 3075 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3076 goto out; 3077 } 3078 } 3079 3080 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3081 deleg, TRUE, &ct)) != NFS4_OK) { 3082 *cs->statusp = resp->status = stat; 3083 goto out; 3084 } 3085 3086 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3087 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3088 3089 /* 3090 * If we can't get the attributes, then we can't do the 3091 * right access checking. So, we'll fail the request. 3092 */ 3093 if (verror) { 3094 *cs->statusp = resp->status = puterrno4(verror); 3095 goto out; 3096 } 3097 3098 if (vp->v_type != VREG) { 3099 *cs->statusp = resp->status = 3100 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3101 goto out; 3102 } 3103 3104 if (crgetuid(cs->cr) != va.va_uid && 3105 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3106 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3107 *cs->statusp = resp->status = puterrno4(error); 3108 goto out; 3109 } 3110 3111 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3112 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3113 goto out; 3114 } 3115 3116 offset = args->offset; 3117 if (offset >= va.va_size) { 3118 *cs->statusp = resp->status = NFS4_OK; 3119 resp->eof = TRUE; 3120 resp->data_len = 0; 3121 resp->data_val = NULL; 3122 resp->mblk = NULL; 3123 *cs->statusp = resp->status = NFS4_OK; 3124 goto out; 3125 } 3126 3127 if (args->count == 0) { 3128 *cs->statusp = resp->status = NFS4_OK; 3129 resp->eof = FALSE; 3130 resp->data_len = 0; 3131 resp->data_val = NULL; 3132 resp->mblk = NULL; 3133 goto out; 3134 } 3135 3136 /* 3137 * Do not allocate memory more than maximum allowed 3138 * transfer size 3139 */ 3140 if (args->count > rfs4_tsize(req)) 3141 args->count = rfs4_tsize(req); 3142 3143 /* 3144 * mp will contain the data to be sent out in the read reply. 3145 * It will be freed after the reply has been sent. 3146 * Let's roundup the data to a BYTES_PER_XDR_UNIT multiple, 3147 * so that the call to xdrmblk_putmblk() never fails. 3148 * If the first alloc of the requested size fails, then 3149 * decrease the size to something more reasonable and wait 3150 * for the allocation to occur. 3151 */ 3152 mp = allocb(RNDUP(args->count), BPRI_MED); 3153 if (mp == NULL) { 3154 if (args->count > MAXBSIZE) 3155 args->count = MAXBSIZE; 3156 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3157 STR_NOSIG, &alloc_err); 3158 } 3159 ASSERT(mp != NULL); 3160 ASSERT(alloc_err == 0); 3161 3162 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3163 iov.iov_len = args->count; 3164 uio.uio_iov = &iov; 3165 uio.uio_iovcnt = 1; 3166 uio.uio_segflg = UIO_SYSSPACE; 3167 uio.uio_extflg = UIO_COPY_CACHED; 3168 uio.uio_loffset = args->offset; 3169 uio.uio_resid = args->count; 3170 3171 error = do_io(FREAD, vp, &uio, 0, cs->cr, &ct); 3172 3173 va.va_mask = AT_SIZE; 3174 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3175 3176 if (error) { 3177 freeb(mp); 3178 *cs->statusp = resp->status = puterrno4(error); 3179 goto out; 3180 } 3181 3182 *cs->statusp = resp->status = NFS4_OK; 3183 3184 ASSERT(uio.uio_resid >= 0); 3185 resp->data_len = args->count - uio.uio_resid; 3186 resp->data_val = (char *)mp->b_datap->db_base; 3187 resp->mblk = mp; 3188 3189 if (!verror && offset + resp->data_len == va.va_size) 3190 resp->eof = TRUE; 3191 else 3192 resp->eof = FALSE; 3193 3194 out: 3195 if (in_crit) 3196 nbl_end_crit(vp); 3197 3198 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3199 READ4res *, resp); 3200 } 3201 3202 static void 3203 rfs4_op_read_free(nfs_resop4 *resop) 3204 { 3205 READ4res *resp = &resop->nfs_resop4_u.opread; 3206 3207 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3208 freeb(resp->mblk); 3209 resp->mblk = NULL; 3210 resp->data_val = NULL; 3211 resp->data_len = 0; 3212 } 3213 } 3214 3215 static void 3216 rfs4_op_readdir_free(nfs_resop4 *resop) 3217 { 3218 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3219 3220 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3221 freeb(resp->mblk); 3222 resp->mblk = NULL; 3223 resp->data_len = 0; 3224 } 3225 } 3226 3227 3228 /* ARGSUSED */ 3229 static void 3230 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3231 struct compound_state *cs) 3232 { 3233 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3234 int error; 3235 vnode_t *vp; 3236 struct exportinfo *exi, *sav_exi; 3237 nfs_fh4_fmt_t *fh_fmtp; 3238 3239 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3240 3241 if (cs->vp) { 3242 VN_RELE(cs->vp); 3243 cs->vp = NULL; 3244 } 3245 3246 if (cs->cr) 3247 crfree(cs->cr); 3248 3249 cs->cr = crdup(cs->basecr); 3250 3251 vp = exi_public->exi_vp; 3252 if (vp == NULL) { 3253 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3254 goto out; 3255 } 3256 3257 if (is_system_labeled()) { 3258 bslabel_t *clabel; 3259 3260 ASSERT(req->rq_label != NULL); 3261 clabel = req->rq_label; 3262 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3263 "got client label from request(1)", 3264 struct svc_req *, req); 3265 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3266 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 3267 *cs->statusp = resp->status = 3268 NFS4ERR_SERVERFAULT; 3269 return; 3270 } 3271 } 3272 } 3273 3274 error = makefh4(&cs->fh, vp, exi_public); 3275 if (error != 0) { 3276 *cs->statusp = resp->status = puterrno4(error); 3277 goto out; 3278 } 3279 sav_exi = cs->exi; 3280 if (exi_public == exi_root) { 3281 /* 3282 * No filesystem is actually shared public, so we default 3283 * to exi_root. In this case, we must check whether root 3284 * is exported. 3285 */ 3286 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3287 3288 /* 3289 * if root filesystem is exported, the exportinfo struct that we 3290 * should use is what checkexport4 returns, because root_exi is 3291 * actually a mostly empty struct. 3292 */ 3293 exi = checkexport4(&fh_fmtp->fh4_fsid, 3294 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3295 cs->exi = ((exi != NULL) ? exi : exi_public); 3296 } else { 3297 /* 3298 * it's a properly shared filesystem 3299 */ 3300 cs->exi = exi_public; 3301 } 3302 3303 VN_HOLD(vp); 3304 cs->vp = vp; 3305 3306 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3307 VN_RELE(cs->vp); 3308 cs->vp = NULL; 3309 cs->exi = sav_exi; 3310 goto out; 3311 } 3312 3313 *cs->statusp = resp->status = NFS4_OK; 3314 out: 3315 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3316 PUTPUBFH4res *, resp); 3317 } 3318 3319 /* 3320 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3321 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3322 * or joe have restrictive search permissions, then we shouldn't let 3323 * the client get a file handle. This is easy to enforce. However, we 3324 * don't know what security flavor should be used until we resolve the 3325 * path name. Another complication is uid mapping. If root is 3326 * the user, then it will be mapped to the anonymous user by default, 3327 * but we won't know that till we've resolved the path name. And we won't 3328 * know what the anonymous user is. 3329 * Luckily, SECINFO is specified to take a full filename. 3330 * So what we will have to in rfs4_op_lookup is check that flavor of 3331 * the target object matches that of the request, and if root was the 3332 * caller, check for the root= and anon= options, and if necessary, 3333 * repeat the lookup using the right cred_t. But that's not done yet. 3334 */ 3335 /* ARGSUSED */ 3336 static void 3337 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3338 struct compound_state *cs) 3339 { 3340 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3341 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3342 nfs_fh4_fmt_t *fh_fmtp; 3343 3344 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3345 PUTFH4args *, args); 3346 3347 if (cs->vp) { 3348 VN_RELE(cs->vp); 3349 cs->vp = NULL; 3350 } 3351 3352 if (cs->cr) { 3353 crfree(cs->cr); 3354 cs->cr = NULL; 3355 } 3356 3357 3358 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3359 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3360 goto out; 3361 } 3362 3363 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3364 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3365 NULL); 3366 3367 if (cs->exi == NULL) { 3368 *cs->statusp = resp->status = NFS4ERR_STALE; 3369 goto out; 3370 } 3371 3372 cs->cr = crdup(cs->basecr); 3373 3374 ASSERT(cs->cr != NULL); 3375 3376 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3377 *cs->statusp = resp->status; 3378 goto out; 3379 } 3380 3381 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3382 VN_RELE(cs->vp); 3383 cs->vp = NULL; 3384 goto out; 3385 } 3386 3387 nfs_fh4_copy(&args->object, &cs->fh); 3388 *cs->statusp = resp->status = NFS4_OK; 3389 cs->deleg = FALSE; 3390 3391 out: 3392 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3393 PUTFH4res *, resp); 3394 } 3395 3396 /* ARGSUSED */ 3397 static void 3398 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3399 struct compound_state *cs) 3400 3401 { 3402 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3403 int error; 3404 fid_t fid; 3405 struct exportinfo *exi, *sav_exi; 3406 3407 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3408 3409 if (cs->vp) { 3410 VN_RELE(cs->vp); 3411 cs->vp = NULL; 3412 } 3413 3414 if (cs->cr) 3415 crfree(cs->cr); 3416 3417 cs->cr = crdup(cs->basecr); 3418 3419 /* 3420 * Using rootdir, the system root vnode, 3421 * get its fid. 3422 */ 3423 bzero(&fid, sizeof (fid)); 3424 fid.fid_len = MAXFIDSZ; 3425 error = vop_fid_pseudo(rootdir, &fid); 3426 if (error != 0) { 3427 *cs->statusp = resp->status = puterrno4(error); 3428 goto out; 3429 } 3430 3431 /* 3432 * Then use the root fsid & fid it to find out if it's exported 3433 * 3434 * If the server root isn't exported directly, then 3435 * it should at least be a pseudo export based on 3436 * one or more exports further down in the server's 3437 * file tree. 3438 */ 3439 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3440 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3441 NFS4_DEBUG(rfs4_debug, 3442 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3443 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3444 goto out; 3445 } 3446 3447 /* 3448 * Now make a filehandle based on the root 3449 * export and root vnode. 3450 */ 3451 error = makefh4(&cs->fh, rootdir, exi); 3452 if (error != 0) { 3453 *cs->statusp = resp->status = puterrno4(error); 3454 goto out; 3455 } 3456 3457 sav_exi = cs->exi; 3458 cs->exi = exi; 3459 3460 VN_HOLD(rootdir); 3461 cs->vp = rootdir; 3462 3463 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3464 VN_RELE(rootdir); 3465 cs->vp = NULL; 3466 cs->exi = sav_exi; 3467 goto out; 3468 } 3469 3470 *cs->statusp = resp->status = NFS4_OK; 3471 cs->deleg = FALSE; 3472 out: 3473 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3474 PUTROOTFH4res *, resp); 3475 } 3476 3477 /* 3478 * A directory entry is a valid nfsv4 entry if 3479 * - it has a non-zero ino 3480 * - it is not a dot or dotdot name 3481 * - it is visible in a pseudo export or in a real export that can 3482 * only have a limited view. 3483 */ 3484 static bool_t 3485 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3486 int *expseudo, int check_visible) 3487 { 3488 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3489 *expseudo = 0; 3490 return (FALSE); 3491 } 3492 3493 if (! check_visible) { 3494 *expseudo = 0; 3495 return (TRUE); 3496 } 3497 3498 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 3499 } 3500 3501 /* 3502 * set_rdattr_params sets up the variables used to manage what information 3503 * to get for each directory entry. 3504 */ 3505 static nfsstat4 3506 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3507 bitmap4 attrs, bool_t *need_to_lookup) 3508 { 3509 uint_t va_mask; 3510 nfsstat4 status; 3511 bitmap4 objbits; 3512 3513 status = bitmap4_to_attrmask(attrs, sargp); 3514 if (status != NFS4_OK) { 3515 /* 3516 * could not even figure attr mask 3517 */ 3518 return (status); 3519 } 3520 va_mask = sargp->vap->va_mask; 3521 3522 /* 3523 * dirent's d_ino is always correct value for mounted_on_fileid. 3524 * mntdfid_set is set once here, but mounted_on_fileid is 3525 * set in main dirent processing loop for each dirent. 3526 * The mntdfid_set is a simple optimization that lets the 3527 * server attr code avoid work when caller is readdir. 3528 */ 3529 sargp->mntdfid_set = TRUE; 3530 3531 /* 3532 * Lookup entry only if client asked for any of the following: 3533 * a) vattr attrs 3534 * b) vfs attrs 3535 * c) attrs w/per-object scope requested (change, filehandle, etc) 3536 * other than mounted_on_fileid (which we can take from dirent) 3537 */ 3538 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3539 3540 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3541 *need_to_lookup = TRUE; 3542 else 3543 *need_to_lookup = FALSE; 3544 3545 if (sargp->sbp == NULL) 3546 return (NFS4_OK); 3547 3548 /* 3549 * If filesystem attrs are requested, get them now from the 3550 * directory vp, as most entries will have same filesystem. The only 3551 * exception are mounted over entries but we handle 3552 * those as we go (XXX mounted over detection not yet implemented). 3553 */ 3554 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3555 status = bitmap4_get_sysattrs(sargp); 3556 sargp->vap->va_mask = va_mask; 3557 3558 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3559 /* 3560 * Failed to get filesystem attributes. 3561 * Return a rdattr_error for each entry, but don't fail. 3562 * However, don't get any obj-dependent attrs. 3563 */ 3564 sargp->rdattr_error = status; /* for rdattr_error */ 3565 *need_to_lookup = FALSE; 3566 /* 3567 * At least get fileid for regular readdir output 3568 */ 3569 sargp->vap->va_mask &= AT_NODEID; 3570 status = NFS4_OK; 3571 } 3572 3573 return (status); 3574 } 3575 3576 /* 3577 * readlink: args: CURRENT_FH. 3578 * res: status. If success - CURRENT_FH unchanged, return linktext. 3579 */ 3580 3581 /* ARGSUSED */ 3582 static void 3583 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3584 struct compound_state *cs) 3585 { 3586 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3587 int error; 3588 vnode_t *vp; 3589 struct iovec iov; 3590 struct vattr va; 3591 struct uio uio; 3592 char *data; 3593 3594 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3595 3596 /* CURRENT_FH: directory */ 3597 vp = cs->vp; 3598 if (vp == NULL) { 3599 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3600 goto out; 3601 } 3602 3603 if (cs->access == CS_ACCESS_DENIED) { 3604 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3605 goto out; 3606 } 3607 3608 if (vp->v_type == VDIR) { 3609 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3610 goto out; 3611 } 3612 3613 if (vp->v_type != VLNK) { 3614 *cs->statusp = resp->status = NFS4ERR_INVAL; 3615 goto out; 3616 } 3617 3618 va.va_mask = AT_MODE; 3619 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3620 if (error) { 3621 *cs->statusp = resp->status = puterrno4(error); 3622 goto out; 3623 } 3624 3625 if (MANDLOCK(vp, va.va_mode)) { 3626 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3627 goto out; 3628 } 3629 3630 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3631 3632 iov.iov_base = data; 3633 iov.iov_len = MAXPATHLEN; 3634 uio.uio_iov = &iov; 3635 uio.uio_iovcnt = 1; 3636 uio.uio_segflg = UIO_SYSSPACE; 3637 uio.uio_extflg = UIO_COPY_CACHED; 3638 uio.uio_loffset = 0; 3639 uio.uio_resid = MAXPATHLEN; 3640 3641 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3642 3643 if (error) { 3644 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3645 *cs->statusp = resp->status = puterrno4(error); 3646 goto out; 3647 } 3648 3649 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3650 3651 /* 3652 * treat link name as data 3653 */ 3654 (void) str_to_utf8(data, &resp->link); 3655 3656 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3657 *cs->statusp = resp->status = NFS4_OK; 3658 3659 out: 3660 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3661 READLINK4res *, resp); 3662 } 3663 3664 static void 3665 rfs4_op_readlink_free(nfs_resop4 *resop) 3666 { 3667 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3668 utf8string *symlink = &resp->link; 3669 3670 if (symlink->utf8string_val) { 3671 UTF8STRING_FREE(*symlink) 3672 } 3673 } 3674 3675 /* 3676 * release_lockowner: 3677 * Release any state associated with the supplied 3678 * lockowner. Note if any lo_state is holding locks we will not 3679 * rele that lo_state and thus the lockowner will not be destroyed. 3680 * A client using lock after the lock owner stateid has been released 3681 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3682 * to reissue the lock with new_lock_owner set to TRUE. 3683 * args: lock_owner 3684 * res: status 3685 */ 3686 /* ARGSUSED */ 3687 static void 3688 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3689 struct svc_req *req, struct compound_state *cs) 3690 { 3691 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3692 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3693 rfs4_lockowner_t *lo; 3694 rfs4_openowner_t *oop; 3695 rfs4_state_t *sp; 3696 rfs4_lo_state_t *lsp; 3697 rfs4_client_t *cp; 3698 bool_t create = FALSE; 3699 locklist_t *llist; 3700 sysid_t sysid; 3701 3702 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3703 cs, RELEASE_LOCKOWNER4args *, ap); 3704 3705 /* Make sure there is a clientid around for this request */ 3706 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3707 3708 if (cp == NULL) { 3709 *cs->statusp = resp->status = 3710 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3711 goto out; 3712 } 3713 rfs4_client_rele(cp); 3714 3715 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3716 if (lo == NULL) { 3717 *cs->statusp = resp->status = NFS4_OK; 3718 goto out; 3719 } 3720 ASSERT(lo->client != NULL); 3721 3722 /* 3723 * Check for EXPIRED client. If so will reap state with in a lease 3724 * period or on next set_clientid_confirm step 3725 */ 3726 if (rfs4_lease_expired(lo->client)) { 3727 rfs4_lockowner_rele(lo); 3728 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3729 goto out; 3730 } 3731 3732 /* 3733 * If no sysid has been assigned, then no locks exist; just return. 3734 */ 3735 rfs4_dbe_lock(lo->client->dbe); 3736 if (lo->client->sysidt == LM_NOSYSID) { 3737 rfs4_lockowner_rele(lo); 3738 rfs4_dbe_unlock(lo->client->dbe); 3739 goto out; 3740 } 3741 3742 sysid = lo->client->sysidt; 3743 rfs4_dbe_unlock(lo->client->dbe); 3744 3745 /* 3746 * Mark the lockowner invalid. 3747 */ 3748 rfs4_dbe_hide(lo->dbe); 3749 3750 /* 3751 * sysid-pid pair should now not be used since the lockowner is 3752 * invalid. If the client were to instantiate the lockowner again 3753 * it would be assigned a new pid. Thus we can get the list of 3754 * current locks. 3755 */ 3756 3757 llist = flk_get_active_locks(sysid, lo->pid); 3758 /* If we are still holding locks fail */ 3759 if (llist != NULL) { 3760 3761 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3762 3763 flk_free_locklist(llist); 3764 /* 3765 * We need to unhide the lockowner so the client can 3766 * try it again. The bad thing here is if the client 3767 * has a logic error that took it here in the first place 3768 * he probably has lost accounting of the locks that it 3769 * is holding. So we may have dangling state until the 3770 * open owner state is reaped via close. One scenario 3771 * that could possibly occur is that the client has 3772 * sent the unlock request(s) in separate threads 3773 * and has not waited for the replies before sending the 3774 * RELEASE_LOCKOWNER request. Presumably, it would expect 3775 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3776 * reissuing the request. 3777 */ 3778 rfs4_dbe_unhide(lo->dbe); 3779 rfs4_lockowner_rele(lo); 3780 goto out; 3781 } 3782 3783 /* 3784 * For the corresponding client we need to check each open 3785 * owner for any opens that have lockowner state associated 3786 * with this lockowner. 3787 */ 3788 3789 rfs4_dbe_lock(lo->client->dbe); 3790 for (oop = lo->client->openownerlist.next->oop; oop != NULL; 3791 oop = oop->openownerlist.next->oop) { 3792 3793 rfs4_dbe_lock(oop->dbe); 3794 for (sp = oop->ownerstateids.next->sp; sp != NULL; 3795 sp = sp->ownerstateids.next->sp) { 3796 3797 rfs4_dbe_lock(sp->dbe); 3798 for (lsp = sp->lockownerlist.next->lsp; 3799 lsp != NULL; lsp = lsp->lockownerlist.next->lsp) { 3800 if (lsp->locker == lo) { 3801 rfs4_dbe_lock(lsp->dbe); 3802 rfs4_dbe_invalidate(lsp->dbe); 3803 rfs4_dbe_unlock(lsp->dbe); 3804 } 3805 } 3806 rfs4_dbe_unlock(sp->dbe); 3807 } 3808 rfs4_dbe_unlock(oop->dbe); 3809 } 3810 rfs4_dbe_unlock(lo->client->dbe); 3811 3812 rfs4_lockowner_rele(lo); 3813 3814 *cs->statusp = resp->status = NFS4_OK; 3815 3816 out: 3817 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 3818 cs, RELEASE_LOCKOWNER4res *, resp); 3819 } 3820 3821 /* 3822 * short utility function to lookup a file and recall the delegation 3823 */ 3824 static rfs4_file_t * 3825 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 3826 int *lkup_error, cred_t *cr) 3827 { 3828 vnode_t *vp; 3829 rfs4_file_t *fp = NULL; 3830 bool_t fcreate = FALSE; 3831 int error; 3832 3833 if (vpp) 3834 *vpp = NULL; 3835 3836 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 3837 NULL)) == 0) { 3838 if (vp->v_type == VREG) 3839 fp = rfs4_findfile(vp, NULL, &fcreate); 3840 if (vpp) 3841 *vpp = vp; 3842 else 3843 VN_RELE(vp); 3844 } 3845 3846 if (lkup_error) 3847 *lkup_error = error; 3848 3849 return (fp); 3850 } 3851 3852 /* 3853 * remove: args: CURRENT_FH: directory; name. 3854 * res: status. If success - CURRENT_FH unchanged, return change_info 3855 * for directory. 3856 */ 3857 /* ARGSUSED */ 3858 static void 3859 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3860 struct compound_state *cs) 3861 { 3862 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 3863 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 3864 int error; 3865 vnode_t *dvp, *vp; 3866 struct vattr bdva, idva, adva; 3867 char *nm; 3868 uint_t len; 3869 rfs4_file_t *fp; 3870 int in_crit = 0; 3871 bslabel_t *clabel; 3872 3873 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 3874 REMOVE4args *, args); 3875 3876 /* CURRENT_FH: directory */ 3877 dvp = cs->vp; 3878 if (dvp == NULL) { 3879 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3880 goto out; 3881 } 3882 3883 if (cs->access == CS_ACCESS_DENIED) { 3884 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3885 goto out; 3886 } 3887 3888 /* 3889 * If there is an unshared filesystem mounted on this vnode, 3890 * Do not allow to remove anything in this directory. 3891 */ 3892 if (vn_ismntpt(dvp)) { 3893 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3894 goto out; 3895 } 3896 3897 if (dvp->v_type != VDIR) { 3898 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3899 goto out; 3900 } 3901 3902 if (!utf8_dir_verify(&args->target)) { 3903 *cs->statusp = resp->status = NFS4ERR_INVAL; 3904 goto out; 3905 } 3906 3907 /* 3908 * Lookup the file so that we can check if it's a directory 3909 */ 3910 nm = utf8_to_fn(&args->target, &len, NULL); 3911 if (nm == NULL) { 3912 *cs->statusp = resp->status = NFS4ERR_INVAL; 3913 goto out; 3914 } 3915 3916 if (len > MAXNAMELEN) { 3917 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 3918 kmem_free(nm, len); 3919 goto out; 3920 } 3921 3922 if (rdonly4(cs->exi, cs->vp, req)) { 3923 *cs->statusp = resp->status = NFS4ERR_ROFS; 3924 kmem_free(nm, len); 3925 goto out; 3926 } 3927 3928 /* 3929 * Lookup the file to determine type and while we are see if 3930 * there is a file struct around and check for delegation. 3931 * We don't need to acquire va_seq before this lookup, if 3932 * it causes an update, cinfo.before will not match, which will 3933 * trigger a cache flush even if atomic is TRUE. 3934 */ 3935 if (fp = rfs4_lookup_and_findfile(dvp, nm, &vp, &error, cs->cr)) { 3936 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 3937 NULL)) { 3938 VN_RELE(vp); 3939 rfs4_file_rele(fp); 3940 *cs->statusp = resp->status = NFS4ERR_DELAY; 3941 kmem_free(nm, len); 3942 goto out; 3943 } 3944 } 3945 3946 /* Didn't find anything to remove */ 3947 if (vp == NULL) { 3948 *cs->statusp = resp->status = error; 3949 kmem_free(nm, len); 3950 goto out; 3951 } 3952 3953 if (nbl_need_check(vp)) { 3954 nbl_start_crit(vp, RW_READER); 3955 in_crit = 1; 3956 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 3957 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 3958 kmem_free(nm, len); 3959 nbl_end_crit(vp); 3960 VN_RELE(vp); 3961 if (fp) { 3962 rfs4_clear_dont_grant(fp); 3963 rfs4_file_rele(fp); 3964 } 3965 goto out; 3966 } 3967 } 3968 3969 /* check label before allowing removal */ 3970 if (is_system_labeled()) { 3971 ASSERT(req->rq_label != NULL); 3972 clabel = req->rq_label; 3973 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 3974 "got client label from request(1)", 3975 struct svc_req *, req); 3976 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3977 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK)) { 3978 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3979 kmem_free(nm, len); 3980 if (in_crit) 3981 nbl_end_crit(vp); 3982 VN_RELE(vp); 3983 if (fp) { 3984 rfs4_clear_dont_grant(fp); 3985 rfs4_file_rele(fp); 3986 } 3987 goto out; 3988 } 3989 } 3990 } 3991 3992 /* Get dir "before" change value */ 3993 bdva.va_mask = AT_CTIME|AT_SEQ; 3994 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 3995 if (error) { 3996 *cs->statusp = resp->status = puterrno4(error); 3997 kmem_free(nm, len); 3998 goto out; 3999 } 4000 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4001 4002 /* Actually do the REMOVE operation */ 4003 if (vp->v_type == VDIR) { 4004 /* 4005 * Can't remove a directory that has a mounted-on filesystem. 4006 */ 4007 if (vn_ismntpt(vp)) { 4008 error = EACCES; 4009 } else { 4010 /* 4011 * System V defines rmdir to return EEXIST, 4012 * not * ENOTEMPTY, if the directory is not 4013 * empty. A System V NFS server needs to map 4014 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4015 * transmit over the wire. 4016 */ 4017 if ((error = VOP_RMDIR(dvp, nm, rootdir, cs->cr, 4018 NULL, 0)) == EEXIST) 4019 error = ENOTEMPTY; 4020 } 4021 } else { 4022 if ((error = VOP_REMOVE(dvp, nm, cs->cr, NULL, 0)) == 0 && 4023 fp != NULL) { 4024 struct vattr va; 4025 vnode_t *tvp; 4026 4027 rfs4_dbe_lock(fp->dbe); 4028 tvp = fp->vp; 4029 if (tvp) 4030 VN_HOLD(tvp); 4031 rfs4_dbe_unlock(fp->dbe); 4032 4033 if (tvp) { 4034 /* 4035 * This is va_seq safe because we are not 4036 * manipulating dvp. 4037 */ 4038 va.va_mask = AT_NLINK; 4039 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4040 va.va_nlink == 0) { 4041 /* Remove state on file remove */ 4042 if (in_crit) { 4043 nbl_end_crit(vp); 4044 in_crit = 0; 4045 } 4046 rfs4_close_all_state(fp); 4047 } 4048 VN_RELE(tvp); 4049 } 4050 } 4051 } 4052 4053 if (in_crit) 4054 nbl_end_crit(vp); 4055 VN_RELE(vp); 4056 4057 if (fp) { 4058 rfs4_clear_dont_grant(fp); 4059 rfs4_file_rele(fp); 4060 } 4061 kmem_free(nm, len); 4062 4063 if (error) { 4064 *cs->statusp = resp->status = puterrno4(error); 4065 goto out; 4066 } 4067 4068 /* 4069 * Get the initial "after" sequence number, if it fails, set to zero 4070 */ 4071 idva.va_mask = AT_SEQ; 4072 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4073 idva.va_seq = 0; 4074 4075 /* 4076 * Force modified data and metadata out to stable storage. 4077 */ 4078 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4079 4080 /* 4081 * Get "after" change value, if it fails, simply return the 4082 * before value. 4083 */ 4084 adva.va_mask = AT_CTIME|AT_SEQ; 4085 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4086 adva.va_ctime = bdva.va_ctime; 4087 adva.va_seq = 0; 4088 } 4089 4090 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4091 4092 /* 4093 * The cinfo.atomic = TRUE only if we have 4094 * non-zero va_seq's, and it has incremented by exactly one 4095 * during the VOP_REMOVE/RMDIR and it didn't change during 4096 * the VOP_FSYNC. 4097 */ 4098 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4099 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4100 resp->cinfo.atomic = TRUE; 4101 else 4102 resp->cinfo.atomic = FALSE; 4103 4104 *cs->statusp = resp->status = NFS4_OK; 4105 4106 out: 4107 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4108 REMOVE4res *, resp); 4109 } 4110 4111 /* 4112 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4113 * oldname and newname. 4114 * res: status. If success - CURRENT_FH unchanged, return change_info 4115 * for both from and target directories. 4116 */ 4117 /* ARGSUSED */ 4118 static void 4119 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4120 struct compound_state *cs) 4121 { 4122 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4123 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4124 int error; 4125 vnode_t *odvp; 4126 vnode_t *ndvp; 4127 vnode_t *srcvp, *targvp; 4128 struct vattr obdva, oidva, oadva; 4129 struct vattr nbdva, nidva, nadva; 4130 char *onm, *nnm; 4131 uint_t olen, nlen; 4132 rfs4_file_t *fp, *sfp; 4133 int in_crit_src, in_crit_targ; 4134 int fp_rele_grant_hold, sfp_rele_grant_hold; 4135 bslabel_t *clabel; 4136 4137 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4138 RENAME4args *, args); 4139 4140 fp = sfp = NULL; 4141 srcvp = targvp = NULL; 4142 in_crit_src = in_crit_targ = 0; 4143 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4144 4145 /* CURRENT_FH: target directory */ 4146 ndvp = cs->vp; 4147 if (ndvp == NULL) { 4148 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4149 goto out; 4150 } 4151 4152 /* SAVED_FH: from directory */ 4153 odvp = cs->saved_vp; 4154 if (odvp == NULL) { 4155 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4156 goto out; 4157 } 4158 4159 if (cs->access == CS_ACCESS_DENIED) { 4160 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4161 goto out; 4162 } 4163 4164 /* 4165 * If there is an unshared filesystem mounted on this vnode, 4166 * do not allow to rename objects in this directory. 4167 */ 4168 if (vn_ismntpt(odvp)) { 4169 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4170 goto out; 4171 } 4172 4173 /* 4174 * If there is an unshared filesystem mounted on this vnode, 4175 * do not allow to rename to this directory. 4176 */ 4177 if (vn_ismntpt(ndvp)) { 4178 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4179 goto out; 4180 } 4181 4182 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4183 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4184 goto out; 4185 } 4186 4187 if (cs->saved_exi != cs->exi) { 4188 *cs->statusp = resp->status = NFS4ERR_XDEV; 4189 goto out; 4190 } 4191 4192 if (!utf8_dir_verify(&args->oldname)) { 4193 *cs->statusp = resp->status = NFS4ERR_INVAL; 4194 goto out; 4195 } 4196 4197 if (!utf8_dir_verify(&args->newname)) { 4198 *cs->statusp = resp->status = NFS4ERR_INVAL; 4199 goto out; 4200 } 4201 4202 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4203 if (onm == NULL) { 4204 *cs->statusp = resp->status = NFS4ERR_INVAL; 4205 goto out; 4206 } 4207 4208 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4209 if (nnm == NULL) { 4210 *cs->statusp = resp->status = NFS4ERR_INVAL; 4211 kmem_free(onm, olen); 4212 goto out; 4213 } 4214 4215 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4216 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4217 kmem_free(onm, olen); 4218 kmem_free(nnm, nlen); 4219 goto out; 4220 } 4221 4222 4223 if (rdonly4(cs->exi, cs->vp, req)) { 4224 *cs->statusp = resp->status = NFS4ERR_ROFS; 4225 kmem_free(onm, olen); 4226 kmem_free(nnm, nlen); 4227 goto out; 4228 } 4229 4230 /* check label of the target dir */ 4231 if (is_system_labeled()) { 4232 ASSERT(req->rq_label != NULL); 4233 clabel = req->rq_label; 4234 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4235 "got client label from request(1)", 4236 struct svc_req *, req); 4237 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4238 if (!do_rfs_label_check(clabel, ndvp, 4239 EQUALITY_CHECK)) { 4240 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4241 goto out; 4242 } 4243 } 4244 } 4245 4246 /* 4247 * Is the source a file and have a delegation? 4248 * We don't need to acquire va_seq before these lookups, if 4249 * it causes an update, cinfo.before will not match, which will 4250 * trigger a cache flush even if atomic is TRUE. 4251 */ 4252 if (sfp = rfs4_lookup_and_findfile(odvp, onm, &srcvp, &error, cs->cr)) { 4253 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4254 NULL)) { 4255 *cs->statusp = resp->status = NFS4ERR_DELAY; 4256 goto err_out; 4257 } 4258 } 4259 4260 if (srcvp == NULL) { 4261 *cs->statusp = resp->status = puterrno4(error); 4262 kmem_free(onm, olen); 4263 kmem_free(nnm, nlen); 4264 goto out; 4265 } 4266 4267 sfp_rele_grant_hold = 1; 4268 4269 /* Does the destination exist and a file and have a delegation? */ 4270 if (fp = rfs4_lookup_and_findfile(ndvp, nnm, &targvp, NULL, cs->cr)) { 4271 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4272 NULL)) { 4273 *cs->statusp = resp->status = NFS4ERR_DELAY; 4274 goto err_out; 4275 } 4276 } 4277 fp_rele_grant_hold = 1; 4278 4279 4280 /* Check for NBMAND lock on both source and target */ 4281 if (nbl_need_check(srcvp)) { 4282 nbl_start_crit(srcvp, RW_READER); 4283 in_crit_src = 1; 4284 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4285 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4286 goto err_out; 4287 } 4288 } 4289 4290 if (targvp && nbl_need_check(targvp)) { 4291 nbl_start_crit(targvp, RW_READER); 4292 in_crit_targ = 1; 4293 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4294 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4295 goto err_out; 4296 } 4297 } 4298 4299 /* Get source "before" change value */ 4300 obdva.va_mask = AT_CTIME|AT_SEQ; 4301 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4302 if (!error) { 4303 nbdva.va_mask = AT_CTIME|AT_SEQ; 4304 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4305 } 4306 if (error) { 4307 *cs->statusp = resp->status = puterrno4(error); 4308 goto err_out; 4309 } 4310 4311 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4312 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4313 4314 if ((error = VOP_RENAME(odvp, onm, ndvp, nnm, cs->cr, NULL, 0)) == 0 && 4315 fp != NULL) { 4316 struct vattr va; 4317 vnode_t *tvp; 4318 4319 rfs4_dbe_lock(fp->dbe); 4320 tvp = fp->vp; 4321 if (tvp) 4322 VN_HOLD(tvp); 4323 rfs4_dbe_unlock(fp->dbe); 4324 4325 if (tvp) { 4326 va.va_mask = AT_NLINK; 4327 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4328 va.va_nlink == 0) { 4329 /* The file is gone and so should the state */ 4330 if (in_crit_targ) { 4331 nbl_end_crit(targvp); 4332 in_crit_targ = 0; 4333 } 4334 rfs4_close_all_state(fp); 4335 } 4336 VN_RELE(tvp); 4337 } 4338 } 4339 if (error == 0) 4340 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4341 4342 if (in_crit_src) 4343 nbl_end_crit(srcvp); 4344 if (srcvp) 4345 VN_RELE(srcvp); 4346 if (in_crit_targ) 4347 nbl_end_crit(targvp); 4348 if (targvp) 4349 VN_RELE(targvp); 4350 4351 if (sfp) { 4352 rfs4_clear_dont_grant(sfp); 4353 rfs4_file_rele(sfp); 4354 } 4355 if (fp) { 4356 rfs4_clear_dont_grant(fp); 4357 rfs4_file_rele(fp); 4358 } 4359 4360 kmem_free(onm, olen); 4361 kmem_free(nnm, nlen); 4362 4363 /* 4364 * Get the initial "after" sequence number, if it fails, set to zero 4365 */ 4366 oidva.va_mask = AT_SEQ; 4367 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4368 oidva.va_seq = 0; 4369 4370 nidva.va_mask = AT_SEQ; 4371 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4372 nidva.va_seq = 0; 4373 4374 /* 4375 * Force modified data and metadata out to stable storage. 4376 */ 4377 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4378 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4379 4380 if (error) { 4381 *cs->statusp = resp->status = puterrno4(error); 4382 goto out; 4383 } 4384 4385 /* 4386 * Get "after" change values, if it fails, simply return the 4387 * before value. 4388 */ 4389 oadva.va_mask = AT_CTIME|AT_SEQ; 4390 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4391 oadva.va_ctime = obdva.va_ctime; 4392 oadva.va_seq = 0; 4393 } 4394 4395 nadva.va_mask = AT_CTIME|AT_SEQ; 4396 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4397 nadva.va_ctime = nbdva.va_ctime; 4398 nadva.va_seq = 0; 4399 } 4400 4401 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4402 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4403 4404 /* 4405 * The cinfo.atomic = TRUE only if we have 4406 * non-zero va_seq's, and it has incremented by exactly one 4407 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4408 */ 4409 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4410 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4411 resp->source_cinfo.atomic = TRUE; 4412 else 4413 resp->source_cinfo.atomic = FALSE; 4414 4415 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4416 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4417 resp->target_cinfo.atomic = TRUE; 4418 else 4419 resp->target_cinfo.atomic = FALSE; 4420 4421 #ifdef VOLATILE_FH_TEST 4422 { 4423 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4424 4425 /* 4426 * Add the renamed file handle to the volatile rename list 4427 */ 4428 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4429 /* file handles may expire on rename */ 4430 vnode_t *vp; 4431 4432 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4433 /* 4434 * Already know that nnm will be a valid string 4435 */ 4436 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4437 NULL, NULL, NULL); 4438 kmem_free(nnm, nlen); 4439 if (!error) { 4440 add_volrnm_fh(cs->exi, vp); 4441 VN_RELE(vp); 4442 } 4443 } 4444 } 4445 #endif /* VOLATILE_FH_TEST */ 4446 4447 *cs->statusp = resp->status = NFS4_OK; 4448 out: 4449 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4450 RENAME4res *, resp); 4451 return; 4452 4453 err_out: 4454 kmem_free(onm, olen); 4455 kmem_free(nnm, nlen); 4456 4457 if (in_crit_src) nbl_end_crit(srcvp); 4458 if (in_crit_targ) nbl_end_crit(targvp); 4459 if (targvp) VN_RELE(targvp); 4460 if (srcvp) VN_RELE(srcvp); 4461 if (sfp) { 4462 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4463 rfs4_file_rele(sfp); 4464 } 4465 if (fp) { 4466 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4467 rfs4_file_rele(fp); 4468 } 4469 4470 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4471 RENAME4res *, resp); 4472 } 4473 4474 /* ARGSUSED */ 4475 static void 4476 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4477 struct compound_state *cs) 4478 { 4479 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4480 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4481 rfs4_client_t *cp; 4482 4483 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4484 RENEW4args *, args); 4485 4486 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4487 *cs->statusp = resp->status = 4488 rfs4_check_clientid(&args->clientid, 0); 4489 goto out; 4490 } 4491 4492 if (rfs4_lease_expired(cp)) { 4493 rfs4_client_rele(cp); 4494 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4495 goto out; 4496 } 4497 4498 rfs4_update_lease(cp); 4499 4500 mutex_enter(cp->cbinfo.cb_lock); 4501 if (cp->cbinfo.cb_notified_of_cb_path_down == FALSE) { 4502 cp->cbinfo.cb_notified_of_cb_path_down = TRUE; 4503 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4504 } else { 4505 *cs->statusp = resp->status = NFS4_OK; 4506 } 4507 mutex_exit(cp->cbinfo.cb_lock); 4508 4509 rfs4_client_rele(cp); 4510 4511 out: 4512 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4513 RENEW4res *, resp); 4514 } 4515 4516 /* ARGSUSED */ 4517 static void 4518 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4519 struct compound_state *cs) 4520 { 4521 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4522 4523 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4524 4525 /* No need to check cs->access - we are not accessing any object */ 4526 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4527 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4528 goto out; 4529 } 4530 if (cs->vp != NULL) { 4531 VN_RELE(cs->vp); 4532 } 4533 cs->vp = cs->saved_vp; 4534 cs->saved_vp = NULL; 4535 cs->exi = cs->saved_exi; 4536 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4537 *cs->statusp = resp->status = NFS4_OK; 4538 cs->deleg = FALSE; 4539 4540 out: 4541 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4542 RESTOREFH4res *, resp); 4543 } 4544 4545 /* ARGSUSED */ 4546 static void 4547 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4548 struct compound_state *cs) 4549 { 4550 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4551 4552 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4553 4554 /* No need to check cs->access - we are not accessing any object */ 4555 if (cs->vp == NULL) { 4556 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4557 goto out; 4558 } 4559 if (cs->saved_vp != NULL) { 4560 VN_RELE(cs->saved_vp); 4561 } 4562 cs->saved_vp = cs->vp; 4563 VN_HOLD(cs->saved_vp); 4564 cs->saved_exi = cs->exi; 4565 /* 4566 * since SAVEFH is fairly rare, don't alloc space for its fh 4567 * unless necessary. 4568 */ 4569 if (cs->saved_fh.nfs_fh4_val == NULL) { 4570 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4571 } 4572 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4573 *cs->statusp = resp->status = NFS4_OK; 4574 4575 out: 4576 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4577 SAVEFH4res *, resp); 4578 } 4579 4580 /* 4581 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4582 * return the bitmap of attrs that were set successfully. It is also 4583 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4584 * always be called only after rfs4_do_set_attrs(). 4585 * 4586 * Verify that the attributes are same as the expected ones. sargp->vap 4587 * and sargp->sbp contain the input attributes as translated from fattr4. 4588 * 4589 * This function verifies only the attrs that correspond to a vattr or 4590 * vfsstat struct. That is because of the extra step needed to get the 4591 * corresponding system structs. Other attributes have already been set or 4592 * verified by do_rfs4_set_attrs. 4593 * 4594 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4595 */ 4596 static int 4597 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4598 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4599 { 4600 int error, ret_error = 0; 4601 int i, k; 4602 uint_t sva_mask = sargp->vap->va_mask; 4603 uint_t vbit; 4604 union nfs4_attr_u *na; 4605 uint8_t *amap; 4606 bool_t getsb = ntovp->vfsstat; 4607 4608 if (sva_mask != 0) { 4609 /* 4610 * Okay to overwrite sargp->vap because we verify based 4611 * on the incoming values. 4612 */ 4613 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4614 sargp->cs->cr, NULL); 4615 if (ret_error) { 4616 if (resp == NULL) 4617 return (ret_error); 4618 /* 4619 * Must return bitmap of successful attrs 4620 */ 4621 sva_mask = 0; /* to prevent checking vap later */ 4622 } else { 4623 /* 4624 * Some file systems clobber va_mask. it is probably 4625 * wrong of them to do so, nonethless we practice 4626 * defensive coding. 4627 * See bug id 4276830. 4628 */ 4629 sargp->vap->va_mask = sva_mask; 4630 } 4631 } 4632 4633 if (getsb) { 4634 /* 4635 * Now get the superblock and loop on the bitmap, as there is 4636 * no simple way of translating from superblock to bitmap4. 4637 */ 4638 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4639 if (ret_error) { 4640 if (resp == NULL) 4641 goto errout; 4642 getsb = FALSE; 4643 } 4644 } 4645 4646 /* 4647 * Now loop and verify each attribute which getattr returned 4648 * whether it's the same as the input. 4649 */ 4650 if (resp == NULL && !getsb && (sva_mask == 0)) 4651 goto errout; 4652 4653 na = ntovp->na; 4654 amap = ntovp->amap; 4655 k = 0; 4656 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4657 k = *amap; 4658 ASSERT(nfs4_ntov_map[k].nval == k); 4659 vbit = nfs4_ntov_map[k].vbit; 4660 4661 /* 4662 * If vattr attribute but VOP_GETATTR failed, or it's 4663 * superblock attribute but VFS_STATVFS failed, skip 4664 */ 4665 if (vbit) { 4666 if ((vbit & sva_mask) == 0) 4667 continue; 4668 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4669 continue; 4670 } 4671 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4672 if (resp != NULL) { 4673 if (error) 4674 ret_error = -1; /* not all match */ 4675 else /* update response bitmap */ 4676 *resp |= nfs4_ntov_map[k].fbit; 4677 continue; 4678 } 4679 if (error) { 4680 ret_error = -1; /* not all match */ 4681 break; 4682 } 4683 } 4684 errout: 4685 return (ret_error); 4686 } 4687 4688 /* 4689 * Decode the attribute to be set/verified. If the attr requires a sys op 4690 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4691 * call the sv_getit function for it, because the sys op hasn't yet been done. 4692 * Return 0 for success, error code if failed. 4693 * 4694 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 4695 */ 4696 static int 4697 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 4698 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 4699 { 4700 int error = 0; 4701 bool_t set_later; 4702 4703 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 4704 4705 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 4706 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 4707 /* 4708 * don't verify yet if a vattr or sb dependent attr, 4709 * because we don't have their sys values yet. 4710 * Will be done later. 4711 */ 4712 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 4713 /* 4714 * ACLs are a special case, since setting the MODE 4715 * conflicts with setting the ACL. We delay setting 4716 * the ACL until all other attributes have been set. 4717 * The ACL gets set in do_rfs4_op_setattr(). 4718 */ 4719 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 4720 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 4721 sargp, nap); 4722 if (error) { 4723 xdr_free(nfs4_ntov_map[k].xfunc, 4724 (caddr_t)nap); 4725 } 4726 } 4727 } 4728 } else { 4729 #ifdef DEBUG 4730 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 4731 "decoding attribute %d\n", k); 4732 #endif 4733 error = EINVAL; 4734 } 4735 if (!error && resp_bval && !set_later) { 4736 *resp_bval |= nfs4_ntov_map[k].fbit; 4737 } 4738 4739 return (error); 4740 } 4741 4742 /* 4743 * Set vattr based on incoming fattr4 attrs - used by setattr. 4744 * Set response mask. Ignore any values that are not writable vattr attrs. 4745 */ 4746 static nfsstat4 4747 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4748 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 4749 nfs4_attr_cmd_t cmd) 4750 { 4751 int error = 0; 4752 int i; 4753 char *attrs = fattrp->attrlist4; 4754 uint32_t attrslen = fattrp->attrlist4_len; 4755 XDR xdr; 4756 nfsstat4 status = NFS4_OK; 4757 vnode_t *vp = cs->vp; 4758 union nfs4_attr_u *na; 4759 uint8_t *amap; 4760 4761 #ifndef lint 4762 /* 4763 * Make sure that maximum attribute number can be expressed as an 4764 * 8 bit quantity. 4765 */ 4766 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 4767 #endif 4768 4769 if (vp == NULL) { 4770 if (resp) 4771 *resp = 0; 4772 return (NFS4ERR_NOFILEHANDLE); 4773 } 4774 if (cs->access == CS_ACCESS_DENIED) { 4775 if (resp) 4776 *resp = 0; 4777 return (NFS4ERR_ACCESS); 4778 } 4779 4780 sargp->op = cmd; 4781 sargp->cs = cs; 4782 sargp->flag = 0; /* may be set later */ 4783 sargp->vap->va_mask = 0; 4784 sargp->rdattr_error = NFS4_OK; 4785 sargp->rdattr_error_req = FALSE; 4786 /* sargp->sbp is set by the caller */ 4787 4788 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 4789 4790 na = ntovp->na; 4791 amap = ntovp->amap; 4792 4793 /* 4794 * The following loop iterates on the nfs4_ntov_map checking 4795 * if the fbit is set in the requested bitmap. 4796 * If set then we process the arguments using the 4797 * rfs4_fattr4 conversion functions to populate the setattr 4798 * vattr and va_mask. Any settable attrs that are not using vattr 4799 * will be set in this loop. 4800 */ 4801 for (i = 0; i < nfs4_ntov_map_size; i++) { 4802 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 4803 continue; 4804 } 4805 /* 4806 * If setattr, must be a writable attr. 4807 * If verify/nverify, must be a readable attr. 4808 */ 4809 if ((error = (*nfs4_ntov_map[i].sv_getit)( 4810 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 4811 /* 4812 * Client tries to set/verify an 4813 * unsupported attribute, tries to set 4814 * a read only attr or verify a write 4815 * only one - error! 4816 */ 4817 break; 4818 } 4819 /* 4820 * Decode the attribute to set/verify 4821 */ 4822 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 4823 &xdr, resp ? resp : NULL, na); 4824 if (error) 4825 break; 4826 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 4827 na++; 4828 (ntovp->attrcnt)++; 4829 if (nfs4_ntov_map[i].vfsstat) 4830 ntovp->vfsstat = TRUE; 4831 } 4832 4833 if (error != 0) 4834 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 4835 puterrno4(error)); 4836 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 4837 return (status); 4838 } 4839 4840 static nfsstat4 4841 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4842 stateid4 *stateid) 4843 { 4844 int error = 0; 4845 struct nfs4_svgetit_arg sarg; 4846 bool_t trunc; 4847 4848 nfsstat4 status = NFS4_OK; 4849 cred_t *cr = cs->cr; 4850 vnode_t *vp = cs->vp; 4851 struct nfs4_ntov_table ntov; 4852 struct statvfs64 sb; 4853 struct vattr bva; 4854 struct flock64 bf; 4855 int in_crit = 0; 4856 uint_t saved_mask = 0; 4857 caller_context_t ct; 4858 4859 *resp = 0; 4860 sarg.sbp = &sb; 4861 nfs4_ntov_table_init(&ntov); 4862 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 4863 NFS4ATTR_SETIT); 4864 if (status != NFS4_OK) { 4865 /* 4866 * failed set attrs 4867 */ 4868 goto done; 4869 } 4870 if ((sarg.vap->va_mask == 0) && 4871 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 4872 /* 4873 * no further work to be done 4874 */ 4875 goto done; 4876 } 4877 4878 /* 4879 * If we got a request to set the ACL and the MODE, only 4880 * allow changing VSUID, VSGID, and VSVTX. Attempting 4881 * to change any other bits, along with setting an ACL, 4882 * gives NFS4ERR_INVAL. 4883 */ 4884 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 4885 (fattrp->attrmask & FATTR4_MODE_MASK)) { 4886 vattr_t va; 4887 4888 va.va_mask = AT_MODE; 4889 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 4890 if (error) { 4891 status = puterrno4(error); 4892 goto done; 4893 } 4894 if ((sarg.vap->va_mode ^ va.va_mode) & 4895 ~(VSUID | VSGID | VSVTX)) { 4896 status = NFS4ERR_INVAL; 4897 goto done; 4898 } 4899 } 4900 4901 /* Check stateid only if size has been set */ 4902 if (sarg.vap->va_mask & AT_SIZE) { 4903 trunc = (sarg.vap->va_size == 0); 4904 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 4905 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 4906 if (status != NFS4_OK) 4907 goto done; 4908 } else { 4909 ct.cc_sysid = 0; 4910 ct.cc_pid = 0; 4911 ct.cc_caller_id = nfs4_srv_caller_id; 4912 ct.cc_flags = CC_DONTBLOCK; 4913 } 4914 4915 /* XXX start of possible race with delegations */ 4916 4917 /* 4918 * We need to specially handle size changes because it is 4919 * possible for the client to create a file with read-only 4920 * modes, but with the file opened for writing. If the client 4921 * then tries to set the file size, e.g. ftruncate(3C), 4922 * fcntl(F_FREESP), the normal access checking done in 4923 * VOP_SETATTR would prevent the client from doing it even though 4924 * it should be allowed to do so. To get around this, we do the 4925 * access checking for ourselves and use VOP_SPACE which doesn't 4926 * do the access checking. 4927 * Also the client should not be allowed to change the file 4928 * size if there is a conflicting non-blocking mandatory lock in 4929 * the region of the change. 4930 */ 4931 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 4932 u_offset_t offset; 4933 ssize_t length; 4934 4935 /* 4936 * ufs_setattr clears AT_SIZE from vap->va_mask, but 4937 * before returning, sarg.vap->va_mask is used to 4938 * generate the setattr reply bitmap. We also clear 4939 * AT_SIZE below before calling VOP_SPACE. For both 4940 * of these cases, the va_mask needs to be saved here 4941 * and restored after calling VOP_SETATTR. 4942 */ 4943 saved_mask = sarg.vap->va_mask; 4944 4945 /* 4946 * Check any possible conflict due to NBMAND locks. 4947 * Get into critical region before VOP_GETATTR, so the 4948 * size attribute is valid when checking conflicts. 4949 */ 4950 if (nbl_need_check(vp)) { 4951 nbl_start_crit(vp, RW_READER); 4952 in_crit = 1; 4953 } 4954 4955 bva.va_mask = AT_UID|AT_SIZE; 4956 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 4957 status = puterrno4(error); 4958 goto done; 4959 } 4960 4961 if (in_crit) { 4962 if (sarg.vap->va_size < bva.va_size) { 4963 offset = sarg.vap->va_size; 4964 length = bva.va_size - sarg.vap->va_size; 4965 } else { 4966 offset = bva.va_size; 4967 length = sarg.vap->va_size - bva.va_size; 4968 } 4969 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 4970 &ct)) { 4971 status = NFS4ERR_LOCKED; 4972 goto done; 4973 } 4974 } 4975 4976 if (crgetuid(cr) == bva.va_uid) { 4977 sarg.vap->va_mask &= ~AT_SIZE; 4978 bf.l_type = F_WRLCK; 4979 bf.l_whence = 0; 4980 bf.l_start = (off64_t)sarg.vap->va_size; 4981 bf.l_len = 0; 4982 bf.l_sysid = 0; 4983 bf.l_pid = 0; 4984 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 4985 (offset_t)sarg.vap->va_size, cr, &ct); 4986 } 4987 } 4988 4989 if (!error && sarg.vap->va_mask != 0) 4990 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 4991 4992 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 4993 if (saved_mask & AT_SIZE) 4994 sarg.vap->va_mask |= AT_SIZE; 4995 4996 /* 4997 * If an ACL was being set, it has been delayed until now, 4998 * in order to set the mode (via the VOP_SETATTR() above) first. 4999 */ 5000 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5001 int i; 5002 5003 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5004 if (ntov.amap[i] == FATTR4_ACL) 5005 break; 5006 if (i < NFS4_MAXNUM_ATTRS) { 5007 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5008 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5009 if (error == 0) { 5010 *resp |= FATTR4_ACL_MASK; 5011 } else if (error == ENOTSUP) { 5012 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5013 status = NFS4ERR_ATTRNOTSUPP; 5014 goto done; 5015 } 5016 } else { 5017 NFS4_DEBUG(rfs4_debug, 5018 (CE_NOTE, "do_rfs4_op_setattr: " 5019 "unable to find ACL in fattr4")); 5020 error = EINVAL; 5021 } 5022 } 5023 5024 if (error) { 5025 /* check if a monitor detected a delegation conflict */ 5026 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5027 status = NFS4ERR_DELAY; 5028 else 5029 status = puterrno4(error); 5030 5031 /* 5032 * Set the response bitmap when setattr failed. 5033 * If VOP_SETATTR partially succeeded, test by doing a 5034 * VOP_GETATTR on the object and comparing the data 5035 * to the setattr arguments. 5036 */ 5037 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5038 } else { 5039 /* 5040 * Force modified metadata out to stable storage. 5041 */ 5042 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5043 /* 5044 * Set response bitmap 5045 */ 5046 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5047 } 5048 5049 /* Return early and already have a NFSv4 error */ 5050 done: 5051 /* 5052 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5053 * conversion sets both readable and writeable NFS4 attrs 5054 * for AT_MTIME and AT_ATIME. The line below masks out 5055 * unrequested attrs from the setattr result bitmap. This 5056 * is placed after the done: label to catch the ATTRNOTSUP 5057 * case. 5058 */ 5059 *resp &= fattrp->attrmask; 5060 5061 if (in_crit) 5062 nbl_end_crit(vp); 5063 5064 nfs4_ntov_table_free(&ntov, &sarg); 5065 5066 return (status); 5067 } 5068 5069 /* ARGSUSED */ 5070 static void 5071 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5072 struct compound_state *cs) 5073 { 5074 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5075 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5076 bslabel_t *clabel; 5077 5078 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5079 SETATTR4args *, args); 5080 5081 if (cs->vp == NULL) { 5082 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5083 goto out; 5084 } 5085 5086 /* 5087 * If there is an unshared filesystem mounted on this vnode, 5088 * do not allow to setattr on this vnode. 5089 */ 5090 if (vn_ismntpt(cs->vp)) { 5091 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5092 goto out; 5093 } 5094 5095 resp->attrsset = 0; 5096 5097 if (rdonly4(cs->exi, cs->vp, req)) { 5098 *cs->statusp = resp->status = NFS4ERR_ROFS; 5099 goto out; 5100 } 5101 5102 /* check label before setting attributes */ 5103 if (is_system_labeled()) { 5104 ASSERT(req->rq_label != NULL); 5105 clabel = req->rq_label; 5106 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5107 "got client label from request(1)", 5108 struct svc_req *, req); 5109 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5110 if (!do_rfs_label_check(clabel, cs->vp, 5111 EQUALITY_CHECK)) { 5112 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5113 goto out; 5114 } 5115 } 5116 } 5117 5118 *cs->statusp = resp->status = 5119 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5120 &args->stateid); 5121 5122 out: 5123 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5124 SETATTR4res *, resp); 5125 } 5126 5127 /* ARGSUSED */ 5128 static void 5129 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5130 struct compound_state *cs) 5131 { 5132 /* 5133 * verify and nverify are exactly the same, except that nverify 5134 * succeeds when some argument changed, and verify succeeds when 5135 * when none changed. 5136 */ 5137 5138 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5139 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5140 5141 int error; 5142 struct nfs4_svgetit_arg sarg; 5143 struct statvfs64 sb; 5144 struct nfs4_ntov_table ntov; 5145 5146 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5147 VERIFY4args *, args); 5148 5149 if (cs->vp == NULL) { 5150 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5151 goto out; 5152 } 5153 5154 sarg.sbp = &sb; 5155 nfs4_ntov_table_init(&ntov); 5156 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5157 &sarg, &ntov, NFS4ATTR_VERIT); 5158 if (resp->status != NFS4_OK) { 5159 /* 5160 * do_rfs4_set_attrs will try to verify systemwide attrs, 5161 * so could return -1 for "no match". 5162 */ 5163 if (resp->status == -1) 5164 resp->status = NFS4ERR_NOT_SAME; 5165 goto done; 5166 } 5167 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5168 switch (error) { 5169 case 0: 5170 resp->status = NFS4_OK; 5171 break; 5172 case -1: 5173 resp->status = NFS4ERR_NOT_SAME; 5174 break; 5175 default: 5176 resp->status = puterrno4(error); 5177 break; 5178 } 5179 done: 5180 *cs->statusp = resp->status; 5181 nfs4_ntov_table_free(&ntov, &sarg); 5182 out: 5183 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5184 VERIFY4res *, resp); 5185 } 5186 5187 /* ARGSUSED */ 5188 static void 5189 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5190 struct compound_state *cs) 5191 { 5192 /* 5193 * verify and nverify are exactly the same, except that nverify 5194 * succeeds when some argument changed, and verify succeeds when 5195 * when none changed. 5196 */ 5197 5198 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5199 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5200 5201 int error; 5202 struct nfs4_svgetit_arg sarg; 5203 struct statvfs64 sb; 5204 struct nfs4_ntov_table ntov; 5205 5206 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5207 NVERIFY4args *, args); 5208 5209 if (cs->vp == NULL) { 5210 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5211 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5212 NVERIFY4res *, resp); 5213 return; 5214 } 5215 sarg.sbp = &sb; 5216 nfs4_ntov_table_init(&ntov); 5217 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5218 &sarg, &ntov, NFS4ATTR_VERIT); 5219 if (resp->status != NFS4_OK) { 5220 /* 5221 * do_rfs4_set_attrs will try to verify systemwide attrs, 5222 * so could return -1 for "no match". 5223 */ 5224 if (resp->status == -1) 5225 resp->status = NFS4_OK; 5226 goto done; 5227 } 5228 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5229 switch (error) { 5230 case 0: 5231 resp->status = NFS4ERR_SAME; 5232 break; 5233 case -1: 5234 resp->status = NFS4_OK; 5235 break; 5236 default: 5237 resp->status = puterrno4(error); 5238 break; 5239 } 5240 done: 5241 *cs->statusp = resp->status; 5242 nfs4_ntov_table_free(&ntov, &sarg); 5243 5244 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5245 NVERIFY4res *, resp); 5246 } 5247 5248 /* 5249 * XXX - This should live in an NFS header file. 5250 */ 5251 #define MAX_IOVECS 12 5252 5253 /* ARGSUSED */ 5254 static void 5255 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5256 struct compound_state *cs) 5257 { 5258 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5259 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5260 int error; 5261 vnode_t *vp; 5262 struct vattr bva; 5263 u_offset_t rlimit; 5264 struct uio uio; 5265 struct iovec iov[MAX_IOVECS]; 5266 struct iovec *iovp; 5267 int iovcnt; 5268 int ioflag; 5269 cred_t *savecred, *cr; 5270 bool_t *deleg = &cs->deleg; 5271 nfsstat4 stat; 5272 int in_crit = 0; 5273 caller_context_t ct; 5274 5275 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5276 WRITE4args *, args); 5277 5278 vp = cs->vp; 5279 if (vp == NULL) { 5280 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5281 goto out; 5282 } 5283 if (cs->access == CS_ACCESS_DENIED) { 5284 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5285 goto out; 5286 } 5287 5288 cr = cs->cr; 5289 5290 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5291 deleg, TRUE, &ct)) != NFS4_OK) { 5292 *cs->statusp = resp->status = stat; 5293 goto out; 5294 } 5295 5296 /* 5297 * We have to enter the critical region before calling VOP_RWLOCK 5298 * to avoid a deadlock with ufs. 5299 */ 5300 if (nbl_need_check(vp)) { 5301 nbl_start_crit(vp, RW_READER); 5302 in_crit = 1; 5303 if (nbl_conflict(vp, NBL_WRITE, 5304 args->offset, args->data_len, 0, &ct)) { 5305 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5306 goto out; 5307 } 5308 } 5309 5310 bva.va_mask = AT_MODE | AT_UID; 5311 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5312 5313 /* 5314 * If we can't get the attributes, then we can't do the 5315 * right access checking. So, we'll fail the request. 5316 */ 5317 if (error) { 5318 *cs->statusp = resp->status = puterrno4(error); 5319 goto out; 5320 } 5321 5322 if (rdonly4(cs->exi, cs->vp, req)) { 5323 *cs->statusp = resp->status = NFS4ERR_ROFS; 5324 goto out; 5325 } 5326 5327 if (vp->v_type != VREG) { 5328 *cs->statusp = resp->status = 5329 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5330 goto out; 5331 } 5332 5333 if (crgetuid(cr) != bva.va_uid && 5334 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5335 *cs->statusp = resp->status = puterrno4(error); 5336 goto out; 5337 } 5338 5339 if (MANDLOCK(vp, bva.va_mode)) { 5340 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5341 goto out; 5342 } 5343 5344 if (args->data_len == 0) { 5345 *cs->statusp = resp->status = NFS4_OK; 5346 resp->count = 0; 5347 resp->committed = args->stable; 5348 resp->writeverf = Write4verf; 5349 goto out; 5350 } 5351 5352 if (args->mblk != NULL) { 5353 mblk_t *m; 5354 uint_t bytes, round_len; 5355 5356 iovcnt = 0; 5357 bytes = 0; 5358 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5359 for (m = args->mblk; 5360 m != NULL && bytes < round_len; 5361 m = m->b_cont) { 5362 iovcnt++; 5363 bytes += MBLKL(m); 5364 } 5365 #ifdef DEBUG 5366 /* should have ended on an mblk boundary */ 5367 if (bytes != round_len) { 5368 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5369 bytes, round_len, args->data_len); 5370 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5371 (void *)args->mblk, (void *)m); 5372 ASSERT(bytes == round_len); 5373 } 5374 #endif 5375 if (iovcnt <= MAX_IOVECS) { 5376 iovp = iov; 5377 } else { 5378 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5379 } 5380 mblk_to_iov(args->mblk, iovcnt, iovp); 5381 } else { 5382 iovcnt = 1; 5383 iovp = iov; 5384 iovp->iov_base = args->data_val; 5385 iovp->iov_len = args->data_len; 5386 } 5387 5388 uio.uio_iov = iovp; 5389 uio.uio_iovcnt = iovcnt; 5390 5391 uio.uio_segflg = UIO_SYSSPACE; 5392 uio.uio_extflg = UIO_COPY_DEFAULT; 5393 uio.uio_loffset = args->offset; 5394 uio.uio_resid = args->data_len; 5395 uio.uio_llimit = curproc->p_fsz_ctl; 5396 rlimit = uio.uio_llimit - args->offset; 5397 if (rlimit < (u_offset_t)uio.uio_resid) 5398 uio.uio_resid = (int)rlimit; 5399 5400 if (args->stable == UNSTABLE4) 5401 ioflag = 0; 5402 else if (args->stable == FILE_SYNC4) 5403 ioflag = FSYNC; 5404 else if (args->stable == DATA_SYNC4) 5405 ioflag = FDSYNC; 5406 else { 5407 if (iovp != iov) 5408 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5409 *cs->statusp = resp->status = NFS4ERR_INVAL; 5410 goto out; 5411 } 5412 5413 /* 5414 * We're changing creds because VM may fault and we need 5415 * the cred of the current thread to be used if quota 5416 * checking is enabled. 5417 */ 5418 savecred = curthread->t_cred; 5419 curthread->t_cred = cr; 5420 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5421 curthread->t_cred = savecred; 5422 5423 if (iovp != iov) 5424 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5425 5426 if (error) { 5427 *cs->statusp = resp->status = puterrno4(error); 5428 goto out; 5429 } 5430 5431 *cs->statusp = resp->status = NFS4_OK; 5432 resp->count = args->data_len - uio.uio_resid; 5433 5434 if (ioflag == 0) 5435 resp->committed = UNSTABLE4; 5436 else 5437 resp->committed = FILE_SYNC4; 5438 5439 resp->writeverf = Write4verf; 5440 5441 out: 5442 if (in_crit) 5443 nbl_end_crit(vp); 5444 5445 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5446 WRITE4res *, resp); 5447 } 5448 5449 5450 /* XXX put in a header file */ 5451 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5452 5453 void 5454 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5455 struct svc_req *req, cred_t *cr, int *rv) 5456 { 5457 uint_t i; 5458 struct compound_state cs; 5459 5460 if (rv != NULL) 5461 *rv = 0; 5462 rfs4_init_compound_state(&cs); 5463 /* 5464 * Form a reply tag by copying over the reqeuest tag. 5465 */ 5466 resp->tag.utf8string_val = 5467 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5468 resp->tag.utf8string_len = args->tag.utf8string_len; 5469 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5470 resp->tag.utf8string_len); 5471 5472 cs.statusp = &resp->status; 5473 cs.req = req; 5474 5475 /* 5476 * XXX for now, minorversion should be zero 5477 */ 5478 if (args->minorversion != NFS4_MINORVERSION) { 5479 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5480 &cs, COMPOUND4args *, args); 5481 resp->array_len = 0; 5482 resp->array = NULL; 5483 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5484 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5485 &cs, COMPOUND4res *, resp); 5486 return; 5487 } 5488 5489 ASSERT(exi == NULL); 5490 ASSERT(cr == NULL); 5491 5492 cr = crget(); 5493 ASSERT(cr != NULL); 5494 5495 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5496 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5497 &cs, COMPOUND4args *, args); 5498 crfree(cr); 5499 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5500 &cs, COMPOUND4res *, resp); 5501 svcerr_badcred(req->rq_xprt); 5502 if (rv != NULL) 5503 *rv = 1; 5504 return; 5505 } 5506 resp->array_len = args->array_len; 5507 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5508 KM_SLEEP); 5509 5510 cs.basecr = cr; 5511 5512 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5513 COMPOUND4args *, args); 5514 5515 /* 5516 * For now, NFS4 compound processing must be protected by 5517 * exported_lock because it can access more than one exportinfo 5518 * per compound and share/unshare can now change multiple 5519 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5520 * per proc (excluding public exinfo), and exi_count design 5521 * is sufficient to protect concurrent execution of NFS2/3 5522 * ops along with unexport. This lock will be removed as 5523 * part of the NFSv4 phase 2 namespace redesign work. 5524 */ 5525 rw_enter(&exported_lock, RW_READER); 5526 5527 /* 5528 * If this is the first compound we've seen, we need to start all 5529 * new instances' grace periods. 5530 */ 5531 if (rfs4_seen_first_compound == 0) { 5532 rfs4_grace_start_new(); 5533 /* 5534 * This must be set after rfs4_grace_start_new(), otherwise 5535 * another thread could proceed past here before the former 5536 * is finished. 5537 */ 5538 rfs4_seen_first_compound = 1; 5539 } 5540 5541 for (i = 0; i < args->array_len && cs.cont; i++) { 5542 nfs_argop4 *argop; 5543 nfs_resop4 *resop; 5544 uint_t op; 5545 5546 argop = &args->array[i]; 5547 resop = &resp->array[i]; 5548 resop->resop = argop->argop; 5549 op = (uint_t)resop->resop; 5550 5551 if (op < rfsv4disp_cnt) { 5552 /* 5553 * Count the individual ops here; NULL and COMPOUND 5554 * are counted in common_dispatch() 5555 */ 5556 rfsproccnt_v4_ptr[op].value.ui64++; 5557 5558 NFS4_DEBUG(rfs4_debug > 1, 5559 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5560 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5561 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5562 rfs4_op_string[op], *cs.statusp)); 5563 if (*cs.statusp != NFS4_OK) 5564 cs.cont = FALSE; 5565 } else { 5566 /* 5567 * This is effectively dead code since XDR code 5568 * will have already returned BADXDR if op doesn't 5569 * decode to legal value. This only done for a 5570 * day when XDR code doesn't verify v4 opcodes. 5571 */ 5572 op = OP_ILLEGAL; 5573 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5574 5575 rfs4_op_illegal(argop, resop, req, &cs); 5576 cs.cont = FALSE; 5577 } 5578 5579 /* 5580 * If not at last op, and if we are to stop, then 5581 * compact the results array. 5582 */ 5583 if ((i + 1) < args->array_len && !cs.cont) { 5584 nfs_resop4 *new_res = kmem_alloc( 5585 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5586 bcopy(resp->array, 5587 new_res, (i+1) * sizeof (nfs_resop4)); 5588 kmem_free(resp->array, 5589 args->array_len * sizeof (nfs_resop4)); 5590 5591 resp->array_len = i + 1; 5592 resp->array = new_res; 5593 } 5594 } 5595 5596 rw_exit(&exported_lock); 5597 5598 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5599 COMPOUND4res *, resp); 5600 5601 if (cs.vp) 5602 VN_RELE(cs.vp); 5603 if (cs.saved_vp) 5604 VN_RELE(cs.saved_vp); 5605 if (cs.saved_fh.nfs_fh4_val) 5606 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5607 5608 if (cs.basecr) 5609 crfree(cs.basecr); 5610 if (cs.cr) 5611 crfree(cs.cr); 5612 /* 5613 * done with this compound request, free the label 5614 */ 5615 5616 if (req->rq_label != NULL) { 5617 kmem_free(req->rq_label, sizeof (bslabel_t)); 5618 req->rq_label = NULL; 5619 } 5620 } 5621 5622 /* 5623 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5624 * XXX zero out the tag and array values. Need to investigate why the 5625 * XXX calls occur, but at least prevent the panic for now. 5626 */ 5627 void 5628 rfs4_compound_free(COMPOUND4res *resp) 5629 { 5630 uint_t i; 5631 5632 if (resp->tag.utf8string_val) { 5633 UTF8STRING_FREE(resp->tag) 5634 } 5635 5636 for (i = 0; i < resp->array_len; i++) { 5637 nfs_resop4 *resop; 5638 uint_t op; 5639 5640 resop = &resp->array[i]; 5641 op = (uint_t)resop->resop; 5642 if (op < rfsv4disp_cnt) { 5643 (*rfsv4disptab[op].dis_resfree)(resop); 5644 } 5645 } 5646 if (resp->array != NULL) { 5647 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5648 } 5649 } 5650 5651 /* 5652 * Process the value of the compound request rpc flags, as a bit-AND 5653 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5654 */ 5655 void 5656 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5657 { 5658 int i; 5659 int flag = RPC_ALL; 5660 5661 for (i = 0; flag && i < args->array_len; i++) { 5662 uint_t op; 5663 5664 op = (uint_t)args->array[i].argop; 5665 5666 if (op < rfsv4disp_cnt) 5667 flag &= rfsv4disptab[op].dis_flags; 5668 else 5669 flag = 0; 5670 } 5671 *flagp = flag; 5672 } 5673 5674 nfsstat4 5675 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5676 { 5677 nfsstat4 e; 5678 5679 rfs4_dbe_lock(cp->dbe); 5680 5681 if (cp->sysidt != LM_NOSYSID) { 5682 *sp = cp->sysidt; 5683 e = NFS4_OK; 5684 5685 } else if ((cp->sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 5686 *sp = cp->sysidt; 5687 e = NFS4_OK; 5688 5689 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 5690 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 5691 } else 5692 e = NFS4ERR_DELAY; 5693 5694 rfs4_dbe_unlock(cp->dbe); 5695 return (e); 5696 } 5697 5698 #if defined(DEBUG) && ! defined(lint) 5699 static void lock_print(char *str, int operation, struct flock64 *flk) 5700 { 5701 char *op, *type; 5702 5703 switch (operation) { 5704 case F_GETLK: op = "F_GETLK"; 5705 break; 5706 case F_SETLK: op = "F_SETLK"; 5707 break; 5708 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 5709 break; 5710 default: op = "F_UNKNOWN"; 5711 break; 5712 } 5713 switch (flk->l_type) { 5714 case F_UNLCK: type = "F_UNLCK"; 5715 break; 5716 case F_RDLCK: type = "F_RDLCK"; 5717 break; 5718 case F_WRLCK: type = "F_WRLCK"; 5719 break; 5720 default: type = "F_UNKNOWN"; 5721 break; 5722 } 5723 5724 ASSERT(flk->l_whence == 0); 5725 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 5726 str, op, type, (longlong_t)flk->l_start, 5727 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 5728 } 5729 5730 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 5731 #else 5732 #define LOCK_PRINT(d, s, t, f) 5733 #endif 5734 5735 /*ARGSUSED*/ 5736 static bool_t 5737 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 5738 { 5739 return (TRUE); 5740 } 5741 5742 /* 5743 * Look up the pathname using the vp in cs as the directory vnode. 5744 * cs->vp will be the vnode for the file on success 5745 */ 5746 5747 static nfsstat4 5748 rfs4_lookup(component4 *component, struct svc_req *req, 5749 struct compound_state *cs) 5750 { 5751 char *nm; 5752 uint32_t len; 5753 nfsstat4 status; 5754 5755 if (cs->vp == NULL) { 5756 return (NFS4ERR_NOFILEHANDLE); 5757 } 5758 if (cs->vp->v_type != VDIR) { 5759 return (NFS4ERR_NOTDIR); 5760 } 5761 5762 if (!utf8_dir_verify(component)) 5763 return (NFS4ERR_INVAL); 5764 5765 nm = utf8_to_fn(component, &len, NULL); 5766 if (nm == NULL) { 5767 return (NFS4ERR_INVAL); 5768 } 5769 5770 if (len > MAXNAMELEN) { 5771 kmem_free(nm, len); 5772 return (NFS4ERR_NAMETOOLONG); 5773 } 5774 5775 status = do_rfs4_op_lookup(nm, len, req, cs); 5776 5777 kmem_free(nm, len); 5778 5779 return (status); 5780 } 5781 5782 static nfsstat4 5783 rfs4_lookupfile(component4 *component, struct svc_req *req, 5784 struct compound_state *cs, uint32_t access, 5785 change_info4 *cinfo) 5786 { 5787 nfsstat4 status; 5788 vnode_t *dvp = cs->vp; 5789 vattr_t bva, ava, fva; 5790 int error; 5791 5792 /* Get "before" change value */ 5793 bva.va_mask = AT_CTIME|AT_SEQ; 5794 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 5795 if (error) 5796 return (puterrno4(error)); 5797 5798 /* rfs4_lookup may VN_RELE directory */ 5799 VN_HOLD(dvp); 5800 5801 status = rfs4_lookup(component, req, cs); 5802 if (status != NFS4_OK) { 5803 VN_RELE(dvp); 5804 return (status); 5805 } 5806 5807 /* 5808 * Get "after" change value, if it fails, simply return the 5809 * before value. 5810 */ 5811 ava.va_mask = AT_CTIME|AT_SEQ; 5812 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 5813 ava.va_ctime = bva.va_ctime; 5814 ava.va_seq = 0; 5815 } 5816 VN_RELE(dvp); 5817 5818 /* 5819 * Validate the file is a file 5820 */ 5821 fva.va_mask = AT_TYPE|AT_MODE; 5822 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 5823 if (error) 5824 return (puterrno4(error)); 5825 5826 if (fva.va_type != VREG) { 5827 if (fva.va_type == VDIR) 5828 return (NFS4ERR_ISDIR); 5829 if (fva.va_type == VLNK) 5830 return (NFS4ERR_SYMLINK); 5831 return (NFS4ERR_INVAL); 5832 } 5833 5834 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 5835 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 5836 5837 /* 5838 * It is undefined if VOP_LOOKUP will change va_seq, so 5839 * cinfo.atomic = TRUE only if we have 5840 * non-zero va_seq's, and they have not changed. 5841 */ 5842 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 5843 cinfo->atomic = TRUE; 5844 else 5845 cinfo->atomic = FALSE; 5846 5847 /* Check for mandatory locking */ 5848 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 5849 return (check_open_access(access, cs, req)); 5850 } 5851 5852 static nfsstat4 5853 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 5854 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 5855 { 5856 int error; 5857 nfsstat4 status = NFS4_OK; 5858 vattr_t va; 5859 5860 tryagain: 5861 5862 /* 5863 * The file open mode used is VWRITE. If the client needs 5864 * some other semantic, then it should do the access checking 5865 * itself. It would have been nice to have the file open mode 5866 * passed as part of the arguments. 5867 */ 5868 5869 *created = TRUE; 5870 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 5871 5872 if (error) { 5873 *created = FALSE; 5874 5875 /* 5876 * If we got something other than file already exists 5877 * then just return this error. Otherwise, we got 5878 * EEXIST. If we were doing a GUARDED create, then 5879 * just return this error. Otherwise, we need to 5880 * make sure that this wasn't a duplicate of an 5881 * exclusive create request. 5882 * 5883 * The assumption is made that a non-exclusive create 5884 * request will never return EEXIST. 5885 */ 5886 5887 if (error != EEXIST || mode == GUARDED4) { 5888 status = puterrno4(error); 5889 return (status); 5890 } 5891 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 5892 NULL, NULL, NULL); 5893 5894 if (error) { 5895 /* 5896 * We couldn't find the file that we thought that 5897 * we just created. So, we'll just try creating 5898 * it again. 5899 */ 5900 if (error == ENOENT) 5901 goto tryagain; 5902 5903 status = puterrno4(error); 5904 return (status); 5905 } 5906 5907 if (mode == UNCHECKED4) { 5908 /* existing object must be regular file */ 5909 if ((*vpp)->v_type != VREG) { 5910 if ((*vpp)->v_type == VDIR) 5911 status = NFS4ERR_ISDIR; 5912 else if ((*vpp)->v_type == VLNK) 5913 status = NFS4ERR_SYMLINK; 5914 else 5915 status = NFS4ERR_INVAL; 5916 VN_RELE(*vpp); 5917 return (status); 5918 } 5919 5920 return (NFS4_OK); 5921 } 5922 5923 /* Check for duplicate request */ 5924 ASSERT(mtime != 0); 5925 va.va_mask = AT_MTIME; 5926 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 5927 if (!error) { 5928 /* We found the file */ 5929 if (va.va_mtime.tv_sec != mtime->tv_sec || 5930 va.va_mtime.tv_nsec != mtime->tv_nsec) { 5931 /* but its not our creation */ 5932 VN_RELE(*vpp); 5933 return (NFS4ERR_EXIST); 5934 } 5935 *created = TRUE; /* retrans of create == created */ 5936 return (NFS4_OK); 5937 } 5938 VN_RELE(*vpp); 5939 return (NFS4ERR_EXIST); 5940 } 5941 5942 return (NFS4_OK); 5943 } 5944 5945 static nfsstat4 5946 check_open_access(uint32_t access, 5947 struct compound_state *cs, struct svc_req *req) 5948 { 5949 int error; 5950 vnode_t *vp; 5951 bool_t readonly; 5952 cred_t *cr = cs->cr; 5953 5954 /* For now we don't allow mandatory locking as per V2/V3 */ 5955 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 5956 return (NFS4ERR_ACCESS); 5957 } 5958 5959 vp = cs->vp; 5960 ASSERT(cr != NULL && vp->v_type == VREG); 5961 5962 /* 5963 * If the file system is exported read only and we are trying 5964 * to open for write, then return NFS4ERR_ROFS 5965 */ 5966 5967 readonly = rdonly4(cs->exi, cs->vp, req); 5968 5969 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 5970 return (NFS4ERR_ROFS); 5971 5972 if (access & OPEN4_SHARE_ACCESS_READ) { 5973 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 5974 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 5975 return (NFS4ERR_ACCESS); 5976 } 5977 } 5978 5979 if (access & OPEN4_SHARE_ACCESS_WRITE) { 5980 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 5981 if (error) 5982 return (NFS4ERR_ACCESS); 5983 } 5984 5985 return (NFS4_OK); 5986 } 5987 5988 static nfsstat4 5989 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 5990 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 5991 { 5992 struct nfs4_svgetit_arg sarg; 5993 struct nfs4_ntov_table ntov; 5994 5995 bool_t ntov_table_init = FALSE; 5996 struct statvfs64 sb; 5997 nfsstat4 status; 5998 vnode_t *vp; 5999 vattr_t bva, ava, iva, cva, *vap; 6000 vnode_t *dvp; 6001 timespec32_t *mtime; 6002 char *nm = NULL; 6003 uint_t buflen; 6004 bool_t created; 6005 bool_t setsize = FALSE; 6006 len_t reqsize; 6007 int error; 6008 bool_t trunc; 6009 caller_context_t ct; 6010 component4 *component; 6011 bslabel_t *clabel; 6012 6013 sarg.sbp = &sb; 6014 6015 dvp = cs->vp; 6016 6017 /* Check if the file system is read only */ 6018 if (rdonly4(cs->exi, dvp, req)) 6019 return (NFS4ERR_ROFS); 6020 6021 /* check the label of including directory */ 6022 if (is_system_labeled()) { 6023 ASSERT(req->rq_label != NULL); 6024 clabel = req->rq_label; 6025 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6026 "got client label from request(1)", 6027 struct svc_req *, req); 6028 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6029 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK)) { 6030 return (NFS4ERR_ACCESS); 6031 } 6032 } 6033 } 6034 6035 /* 6036 * Get the last component of path name in nm. cs will reference 6037 * the including directory on success. 6038 */ 6039 component = &args->open_claim4_u.file; 6040 if (!utf8_dir_verify(component)) 6041 return (NFS4ERR_INVAL); 6042 6043 nm = utf8_to_fn(component, &buflen, NULL); 6044 6045 if (nm == NULL) 6046 return (NFS4ERR_RESOURCE); 6047 6048 if (buflen > MAXNAMELEN) { 6049 kmem_free(nm, buflen); 6050 return (NFS4ERR_NAMETOOLONG); 6051 } 6052 6053 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6054 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6055 if (error) { 6056 kmem_free(nm, buflen); 6057 return (puterrno4(error)); 6058 } 6059 6060 if (bva.va_type != VDIR) { 6061 kmem_free(nm, buflen); 6062 return (NFS4ERR_NOTDIR); 6063 } 6064 6065 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6066 6067 switch (args->mode) { 6068 case GUARDED4: 6069 /*FALLTHROUGH*/ 6070 case UNCHECKED4: 6071 nfs4_ntov_table_init(&ntov); 6072 ntov_table_init = TRUE; 6073 6074 *attrset = 0; 6075 status = do_rfs4_set_attrs(attrset, 6076 &args->createhow4_u.createattrs, 6077 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6078 6079 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6080 sarg.vap->va_type != VREG) { 6081 if (sarg.vap->va_type == VDIR) 6082 status = NFS4ERR_ISDIR; 6083 else if (sarg.vap->va_type == VLNK) 6084 status = NFS4ERR_SYMLINK; 6085 else 6086 status = NFS4ERR_INVAL; 6087 } 6088 6089 if (status != NFS4_OK) { 6090 kmem_free(nm, buflen); 6091 nfs4_ntov_table_free(&ntov, &sarg); 6092 *attrset = 0; 6093 return (status); 6094 } 6095 6096 vap = sarg.vap; 6097 vap->va_type = VREG; 6098 vap->va_mask |= AT_TYPE; 6099 6100 if ((vap->va_mask & AT_MODE) == 0) { 6101 vap->va_mask |= AT_MODE; 6102 vap->va_mode = (mode_t)0600; 6103 } 6104 6105 if (vap->va_mask & AT_SIZE) { 6106 6107 /* Disallow create with a non-zero size */ 6108 6109 if ((reqsize = sarg.vap->va_size) != 0) { 6110 kmem_free(nm, buflen); 6111 nfs4_ntov_table_free(&ntov, &sarg); 6112 *attrset = 0; 6113 return (NFS4ERR_INVAL); 6114 } 6115 setsize = TRUE; 6116 } 6117 break; 6118 6119 case EXCLUSIVE4: 6120 /* prohibit EXCL create of named attributes */ 6121 if (dvp->v_flag & V_XATTRDIR) { 6122 kmem_free(nm, buflen); 6123 *attrset = 0; 6124 return (NFS4ERR_INVAL); 6125 } 6126 6127 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6128 cva.va_type = VREG; 6129 /* 6130 * Ensure no time overflows. Assumes underlying 6131 * filesystem supports at least 32 bits. 6132 * Truncate nsec to usec resolution to allow valid 6133 * compares even if the underlying filesystem truncates. 6134 */ 6135 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6136 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6137 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6138 cva.va_mode = (mode_t)0; 6139 vap = &cva; 6140 break; 6141 } 6142 6143 status = create_vnode(dvp, nm, vap, args->mode, mtime, 6144 cs->cr, &vp, &created); 6145 kmem_free(nm, buflen); 6146 6147 if (status != NFS4_OK) { 6148 if (ntov_table_init) 6149 nfs4_ntov_table_free(&ntov, &sarg); 6150 *attrset = 0; 6151 return (status); 6152 } 6153 6154 trunc = (setsize && !created); 6155 6156 if (args->mode != EXCLUSIVE4) { 6157 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6158 6159 /* 6160 * True verification that object was created with correct 6161 * attrs is impossible. The attrs could have been changed 6162 * immediately after object creation. If attributes did 6163 * not verify, the only recourse for the server is to 6164 * destroy the object. Maybe if some attrs (like gid) 6165 * are set incorrectly, the object should be destroyed; 6166 * however, seems bad as a default policy. Do we really 6167 * want to destroy an object over one of the times not 6168 * verifying correctly? For these reasons, the server 6169 * currently sets bits in attrset for createattrs 6170 * that were set; however, no verification is done. 6171 * 6172 * vmask_to_nmask accounts for vattr bits set on create 6173 * [do_rfs4_set_attrs() only sets resp bits for 6174 * non-vattr/vfs bits.] 6175 * Mask off any bits we set by default so as not to return 6176 * more attrset bits than were requested in createattrs 6177 */ 6178 if (created) { 6179 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6180 *attrset &= createmask; 6181 } else { 6182 /* 6183 * We did not create the vnode (we tried but it 6184 * already existed). In this case, the only createattr 6185 * that the spec allows the server to set is size, 6186 * and even then, it can only be set if it is 0. 6187 */ 6188 *attrset = 0; 6189 if (trunc) 6190 *attrset = FATTR4_SIZE_MASK; 6191 } 6192 } 6193 if (ntov_table_init) 6194 nfs4_ntov_table_free(&ntov, &sarg); 6195 6196 /* 6197 * Get the initial "after" sequence number, if it fails, 6198 * set to zero, time to before. 6199 */ 6200 iva.va_mask = AT_CTIME|AT_SEQ; 6201 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6202 iva.va_seq = 0; 6203 iva.va_ctime = bva.va_ctime; 6204 } 6205 6206 /* 6207 * create_vnode attempts to create the file exclusive, 6208 * if it already exists the VOP_CREATE will fail and 6209 * may not increase va_seq. It is atomic if 6210 * we haven't changed the directory, but if it has changed 6211 * we don't know what changed it. 6212 */ 6213 if (!created) { 6214 if (bva.va_seq && iva.va_seq && 6215 bva.va_seq == iva.va_seq) 6216 cinfo->atomic = TRUE; 6217 else 6218 cinfo->atomic = FALSE; 6219 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6220 } else { 6221 /* 6222 * The entry was created, we need to sync the 6223 * directory metadata. 6224 */ 6225 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6226 6227 /* 6228 * Get "after" change value, if it fails, simply return the 6229 * before value. 6230 */ 6231 ava.va_mask = AT_CTIME|AT_SEQ; 6232 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6233 ava.va_ctime = bva.va_ctime; 6234 ava.va_seq = 0; 6235 } 6236 6237 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6238 6239 /* 6240 * The cinfo->atomic = TRUE only if we have 6241 * non-zero va_seq's, and it has incremented by exactly one 6242 * during the create_vnode and it didn't 6243 * change during the VOP_FSYNC. 6244 */ 6245 if (bva.va_seq && iva.va_seq && ava.va_seq && 6246 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6247 cinfo->atomic = TRUE; 6248 else 6249 cinfo->atomic = FALSE; 6250 } 6251 6252 /* Check for mandatory locking and that the size gets set. */ 6253 cva.va_mask = AT_MODE; 6254 if (setsize) 6255 cva.va_mask |= AT_SIZE; 6256 6257 /* Assume the worst */ 6258 cs->mandlock = TRUE; 6259 6260 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6261 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6262 6263 /* 6264 * Truncate the file if necessary; this would be 6265 * the case for create over an existing file. 6266 */ 6267 6268 if (trunc) { 6269 int in_crit = 0; 6270 rfs4_file_t *fp; 6271 bool_t create = FALSE; 6272 6273 /* 6274 * We are writing over an existing file. 6275 * Check to see if we need to recall a delegation. 6276 */ 6277 rfs4_hold_deleg_policy(); 6278 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6279 if (rfs4_check_delegated_byfp(FWRITE, fp, 6280 (reqsize == 0), FALSE, FALSE, &clientid)) { 6281 rfs4_file_rele(fp); 6282 rfs4_rele_deleg_policy(); 6283 VN_RELE(vp); 6284 *attrset = 0; 6285 return (NFS4ERR_DELAY); 6286 } 6287 rfs4_file_rele(fp); 6288 } 6289 rfs4_rele_deleg_policy(); 6290 6291 if (nbl_need_check(vp)) { 6292 in_crit = 1; 6293 6294 ASSERT(reqsize == 0); 6295 6296 nbl_start_crit(vp, RW_READER); 6297 if (nbl_conflict(vp, NBL_WRITE, 0, 6298 cva.va_size, 0, NULL)) { 6299 in_crit = 0; 6300 nbl_end_crit(vp); 6301 VN_RELE(vp); 6302 *attrset = 0; 6303 return (NFS4ERR_ACCESS); 6304 } 6305 } 6306 ct.cc_sysid = 0; 6307 ct.cc_pid = 0; 6308 ct.cc_caller_id = nfs4_srv_caller_id; 6309 ct.cc_flags = CC_DONTBLOCK; 6310 6311 cva.va_mask = AT_SIZE; 6312 cva.va_size = reqsize; 6313 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6314 if (in_crit) 6315 nbl_end_crit(vp); 6316 } 6317 } 6318 6319 error = makefh4(&cs->fh, vp, cs->exi); 6320 6321 /* 6322 * Force modified data and metadata out to stable storage. 6323 */ 6324 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6325 6326 if (error) { 6327 VN_RELE(vp); 6328 *attrset = 0; 6329 return (puterrno4(error)); 6330 } 6331 6332 /* if parent dir is attrdir, set namedattr fh flag */ 6333 if (dvp->v_flag & V_XATTRDIR) 6334 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6335 6336 if (cs->vp) 6337 VN_RELE(cs->vp); 6338 6339 cs->vp = vp; 6340 6341 /* 6342 * if we did not create the file, we will need to check 6343 * the access bits on the file 6344 */ 6345 6346 if (!created) { 6347 if (setsize) 6348 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6349 status = check_open_access(args->share_access, cs, req); 6350 if (status != NFS4_OK) 6351 *attrset = 0; 6352 } 6353 return (status); 6354 } 6355 6356 /*ARGSUSED*/ 6357 static void 6358 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6359 rfs4_openowner_t *oo, delegreq_t deleg, 6360 uint32_t access, uint32_t deny, 6361 OPEN4res *resp, int deleg_cur) 6362 { 6363 /* XXX Currently not using req */ 6364 rfs4_state_t *state; 6365 rfs4_file_t *file; 6366 bool_t screate = TRUE; 6367 bool_t fcreate = TRUE; 6368 uint32_t amodes; 6369 uint32_t dmodes; 6370 rfs4_deleg_state_t *dsp; 6371 struct shrlock shr; 6372 struct shr_locowner shr_loco; 6373 sysid_t sysid; 6374 nfsstat4 status; 6375 caller_context_t ct; 6376 int fflags = 0; 6377 int recall = 0; 6378 int err; 6379 int cmd; 6380 6381 /* get the file struct and hold a lock on it during initial open */ 6382 file = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6383 if (file == NULL) { 6384 NFS4_DEBUG(rfs4_debug, 6385 (CE_NOTE, "rfs4_do_open: can't find file")); 6386 resp->status = NFS4ERR_SERVERFAULT; 6387 return; 6388 } 6389 6390 state = rfs4_findstate_by_owner_file(oo, file, &screate); 6391 if (state == NULL) { 6392 NFS4_DEBUG(rfs4_debug, 6393 (CE_NOTE, "rfs4_do_open: can't find state")); 6394 resp->status = NFS4ERR_RESOURCE; 6395 /* No need to keep any reference */ 6396 rfs4_file_rele_withunlock(file); 6397 return; 6398 } 6399 6400 /* try to get the sysid before continuing */ 6401 if ((status = rfs4_client_sysid(oo->client, &sysid)) != NFS4_OK) { 6402 resp->status = status; 6403 rfs4_file_rele(file); 6404 /* Not a fully formed open; "close" it */ 6405 if (screate == TRUE) 6406 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6407 rfs4_state_rele(state); 6408 return; 6409 } 6410 6411 /* Calculate the fflags for this OPEN. */ 6412 if (access & OPEN4_SHARE_ACCESS_READ) 6413 fflags |= FREAD; 6414 if (access & OPEN4_SHARE_ACCESS_WRITE) 6415 fflags |= FWRITE; 6416 6417 /* 6418 * Calculate the new deny and access mode that this open is adding to 6419 * the file for this open owner; 6420 */ 6421 dmodes = (deny & ~state->share_deny); 6422 amodes = (access & ~state->share_access); 6423 6424 /* 6425 * Check to see the client has already sent an open for this 6426 * open owner on this file with the same share/deny modes. 6427 * If so, we don't need to check for a conflict and we don't 6428 * need to add another shrlock. If not, then we need to 6429 * check for conflicts in deny and access before checking for 6430 * conflicts in delegation. We don't want to recall a 6431 * delegation based on an open that will eventually fail based 6432 * on shares modes. 6433 */ 6434 6435 if (dmodes || amodes) { 6436 shr.s_access = (short)access; 6437 shr.s_deny = (short)deny; 6438 shr.s_pid = rfs4_dbe_getid(oo->dbe); 6439 shr.s_sysid = sysid; 6440 shr_loco.sl_pid = shr.s_pid; 6441 shr_loco.sl_id = shr.s_sysid; 6442 shr.s_owner = (caddr_t)&shr_loco; 6443 shr.s_own_len = sizeof (shr_loco); 6444 6445 cmd = nbl_need_check(cs->vp) ? F_SHARE_NBMAND : F_SHARE; 6446 if ((err = vop_shrlock(cs->vp, cmd, &shr, fflags)) != 0) { 6447 6448 resp->status = err == EAGAIN ? 6449 NFS4ERR_SHARE_DENIED : puterrno4(err); 6450 6451 rfs4_file_rele(file); 6452 /* Not a fully formed open; "close" it */ 6453 if (screate == TRUE) 6454 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6455 rfs4_state_rele(state); 6456 return; 6457 } 6458 } 6459 6460 rfs4_dbe_lock(state->dbe); 6461 rfs4_dbe_lock(file->dbe); 6462 6463 /* 6464 * Check to see if this file is delegated and if so, if a 6465 * recall needs to be done. 6466 */ 6467 if (rfs4_check_recall(state, access)) { 6468 rfs4_dbe_unlock(file->dbe); 6469 rfs4_dbe_unlock(state->dbe); 6470 rfs4_recall_deleg(file, FALSE, state->owner->client); 6471 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6472 rfs4_dbe_lock(state->dbe); 6473 rfs4_dbe_lock(file->dbe); 6474 /* Let's see if the delegation was returned */ 6475 if (rfs4_check_recall(state, access)) { 6476 rfs4_dbe_unlock(file->dbe); 6477 rfs4_dbe_unlock(state->dbe); 6478 rfs4_file_rele(file); 6479 rfs4_update_lease(state->owner->client); 6480 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6481 /* Not a fully formed open; "close" it */ 6482 if (screate == TRUE) 6483 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6484 rfs4_state_rele(state); 6485 resp->status = NFS4ERR_DELAY; 6486 return; 6487 } 6488 } 6489 /* 6490 * the share check passed and any delegation conflict has been 6491 * taken care of, now call vop_open. 6492 * if this is the first open then call vop_open with fflags. 6493 * if not, call vn_open_upgrade with just the upgrade flags. 6494 * 6495 * if the file has been opened already, it will have the current 6496 * access mode in the state struct. if it has no share access, then 6497 * this is a new open. 6498 * 6499 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6500 * call VOP_OPEN(), just do the open upgrade. 6501 */ 6502 if (((state->share_access & OPEN4_SHARE_ACCESS_BOTH) == 0) && 6503 !deleg_cur) { 6504 ct.cc_sysid = sysid; 6505 ct.cc_pid = shr.s_pid; 6506 ct.cc_caller_id = nfs4_srv_caller_id; 6507 ct.cc_flags = CC_DONTBLOCK; 6508 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6509 if (err) { 6510 rfs4_dbe_unlock(file->dbe); 6511 rfs4_dbe_unlock(state->dbe); 6512 rfs4_file_rele(file); 6513 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6514 /* Not a fully formed open; "close" it */ 6515 if (screate == TRUE) 6516 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6517 rfs4_state_rele(state); 6518 /* check if a monitor detected a delegation conflict */ 6519 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6520 resp->status = NFS4ERR_DELAY; 6521 else 6522 resp->status = NFS4ERR_SERVERFAULT; 6523 return; 6524 } 6525 } else { /* open upgrade */ 6526 /* 6527 * calculate the fflags for the new mode that is being added 6528 * by this upgrade. 6529 */ 6530 fflags = 0; 6531 if (amodes & OPEN4_SHARE_ACCESS_READ) 6532 fflags |= FREAD; 6533 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6534 fflags |= FWRITE; 6535 vn_open_upgrade(cs->vp, fflags); 6536 } 6537 6538 if (dmodes & OPEN4_SHARE_DENY_READ) 6539 file->deny_read++; 6540 if (dmodes & OPEN4_SHARE_DENY_WRITE) 6541 file->deny_write++; 6542 file->share_deny |= deny; 6543 state->share_deny |= deny; 6544 6545 if (amodes & OPEN4_SHARE_ACCESS_READ) 6546 file->access_read++; 6547 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6548 file->access_write++; 6549 file->share_access |= access; 6550 state->share_access |= access; 6551 6552 /* 6553 * Check for delegation here. if the deleg argument is not 6554 * DELEG_ANY, then this is a reclaim from a client and 6555 * we must honor the delegation requested. If necessary we can 6556 * set the recall flag. 6557 */ 6558 6559 dsp = rfs4_grant_delegation(deleg, state, &recall); 6560 6561 cs->deleg = (file->dinfo->dtype == OPEN_DELEGATE_WRITE); 6562 6563 next_stateid(&state->stateid); 6564 6565 resp->stateid = state->stateid.stateid; 6566 6567 rfs4_dbe_unlock(file->dbe); 6568 rfs4_dbe_unlock(state->dbe); 6569 6570 if (dsp) { 6571 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6572 rfs4_deleg_state_rele(dsp); 6573 } 6574 6575 rfs4_file_rele(file); 6576 rfs4_state_rele(state); 6577 6578 resp->status = NFS4_OK; 6579 } 6580 6581 /*ARGSUSED*/ 6582 static void 6583 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6584 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6585 { 6586 change_info4 *cinfo = &resp->cinfo; 6587 bitmap4 *attrset = &resp->attrset; 6588 6589 if (args->opentype == OPEN4_NOCREATE) 6590 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6591 req, cs, args->share_access, cinfo); 6592 else { 6593 /* inhibit delegation grants during exclusive create */ 6594 6595 if (args->mode == EXCLUSIVE4) 6596 rfs4_disable_delegation(); 6597 6598 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6599 oo->client->clientid); 6600 } 6601 6602 if (resp->status == NFS4_OK) { 6603 6604 /* cs->vp cs->fh now reference the desired file */ 6605 6606 rfs4_do_open(cs, req, oo, DELEG_ANY, args->share_access, 6607 args->share_deny, resp, 0); 6608 6609 /* 6610 * If rfs4_createfile set attrset, we must 6611 * clear this attrset before the response is copied. 6612 */ 6613 if (resp->status != NFS4_OK && resp->attrset) { 6614 resp->attrset = 0; 6615 } 6616 } 6617 else 6618 *cs->statusp = resp->status; 6619 6620 if (args->mode == EXCLUSIVE4) 6621 rfs4_enable_delegation(); 6622 } 6623 6624 /*ARGSUSED*/ 6625 static void 6626 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6627 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6628 { 6629 change_info4 *cinfo = &resp->cinfo; 6630 vattr_t va; 6631 vtype_t v_type = cs->vp->v_type; 6632 int error = 0; 6633 6634 /* Verify that we have a regular file */ 6635 if (v_type != VREG) { 6636 if (v_type == VDIR) 6637 resp->status = NFS4ERR_ISDIR; 6638 else if (v_type == VLNK) 6639 resp->status = NFS4ERR_SYMLINK; 6640 else 6641 resp->status = NFS4ERR_INVAL; 6642 return; 6643 } 6644 6645 va.va_mask = AT_MODE|AT_UID; 6646 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 6647 if (error) { 6648 resp->status = puterrno4(error); 6649 return; 6650 } 6651 6652 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 6653 6654 /* 6655 * Check if we have access to the file, Note the the file 6656 * could have originally been open UNCHECKED or GUARDED 6657 * with mode bits that will now fail, but there is nothing 6658 * we can really do about that except in the case that the 6659 * owner of the file is the one requesting the open. 6660 */ 6661 if (crgetuid(cs->cr) != va.va_uid) { 6662 resp->status = check_open_access(args->share_access, cs, req); 6663 if (resp->status != NFS4_OK) { 6664 return; 6665 } 6666 } 6667 6668 /* 6669 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 6670 */ 6671 cinfo->before = 0; 6672 cinfo->after = 0; 6673 cinfo->atomic = FALSE; 6674 6675 rfs4_do_open(cs, req, oo, 6676 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 6677 args->share_access, args->share_deny, resp, 0); 6678 } 6679 6680 static void 6681 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 6682 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6683 { 6684 int error; 6685 nfsstat4 status; 6686 stateid4 stateid = 6687 args->open_claim4_u.delegate_cur_info.delegate_stateid; 6688 rfs4_deleg_state_t *dsp; 6689 6690 /* 6691 * Find the state info from the stateid and confirm that the 6692 * file is delegated. If the state openowner is the same as 6693 * the supplied openowner we're done. If not, get the file 6694 * info from the found state info. Use that file info to 6695 * create the state for this lock owner. Note solaris doen't 6696 * really need the pathname to find the file. We may want to 6697 * lookup the pathname and make sure that the vp exist and 6698 * matches the vp in the file structure. However it is 6699 * possible that the pathname nolonger exists (local process 6700 * unlinks the file), so this may not be that useful. 6701 */ 6702 6703 status = rfs4_get_deleg_state(&stateid, &dsp); 6704 if (status != NFS4_OK) { 6705 resp->status = status; 6706 return; 6707 } 6708 6709 ASSERT(dsp->finfo->dinfo->dtype != OPEN_DELEGATE_NONE); 6710 6711 /* 6712 * New lock owner, create state. Since this was probably called 6713 * in response to a CB_RECALL we set deleg to DELEG_NONE 6714 */ 6715 6716 ASSERT(cs->vp != NULL); 6717 VN_RELE(cs->vp); 6718 VN_HOLD(dsp->finfo->vp); 6719 cs->vp = dsp->finfo->vp; 6720 6721 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 6722 rfs4_deleg_state_rele(dsp); 6723 *cs->statusp = resp->status = puterrno4(error); 6724 return; 6725 } 6726 6727 /* Mark progress for delegation returns */ 6728 dsp->finfo->dinfo->time_lastwrite = gethrestime_sec(); 6729 rfs4_deleg_state_rele(dsp); 6730 rfs4_do_open(cs, req, oo, DELEG_NONE, 6731 args->share_access, args->share_deny, resp, 1); 6732 } 6733 6734 /*ARGSUSED*/ 6735 static void 6736 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 6737 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6738 { 6739 /* 6740 * Lookup the pathname, it must already exist since this file 6741 * was delegated. 6742 * 6743 * Find the file and state info for this vp and open owner pair. 6744 * check that they are in fact delegated. 6745 * check that the state access and deny modes are the same. 6746 * 6747 * Return the delgation possibly seting the recall flag. 6748 */ 6749 rfs4_file_t *file; 6750 rfs4_state_t *state; 6751 bool_t create = FALSE; 6752 bool_t dcreate = FALSE; 6753 rfs4_deleg_state_t *dsp; 6754 nfsace4 *ace; 6755 6756 6757 /* Note we ignore oflags */ 6758 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 6759 req, cs, args->share_access, &resp->cinfo); 6760 6761 if (resp->status != NFS4_OK) { 6762 return; 6763 } 6764 6765 /* get the file struct and hold a lock on it during initial open */ 6766 file = rfs4_findfile_withlock(cs->vp, NULL, &create); 6767 if (file == NULL) { 6768 NFS4_DEBUG(rfs4_debug, 6769 (CE_NOTE, "rfs4_do_opendelprev: can't find file")); 6770 resp->status = NFS4ERR_SERVERFAULT; 6771 return; 6772 } 6773 6774 state = rfs4_findstate_by_owner_file(oo, file, &create); 6775 if (state == NULL) { 6776 NFS4_DEBUG(rfs4_debug, 6777 (CE_NOTE, "rfs4_do_opendelprev: can't find state")); 6778 resp->status = NFS4ERR_SERVERFAULT; 6779 rfs4_file_rele_withunlock(file); 6780 return; 6781 } 6782 6783 rfs4_dbe_lock(state->dbe); 6784 rfs4_dbe_lock(file->dbe); 6785 if (args->share_access != state->share_access || 6786 args->share_deny != state->share_deny || 6787 state->finfo->dinfo->dtype == OPEN_DELEGATE_NONE) { 6788 NFS4_DEBUG(rfs4_debug, 6789 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 6790 rfs4_dbe_unlock(file->dbe); 6791 rfs4_dbe_unlock(state->dbe); 6792 rfs4_file_rele(file); 6793 rfs4_state_rele(state); 6794 resp->status = NFS4ERR_SERVERFAULT; 6795 return; 6796 } 6797 rfs4_dbe_unlock(file->dbe); 6798 rfs4_dbe_unlock(state->dbe); 6799 6800 dsp = rfs4_finddeleg(state, &dcreate); 6801 if (dsp == NULL) { 6802 rfs4_state_rele(state); 6803 rfs4_file_rele(file); 6804 resp->status = NFS4ERR_SERVERFAULT; 6805 return; 6806 } 6807 6808 next_stateid(&state->stateid); 6809 6810 resp->stateid = state->stateid.stateid; 6811 6812 resp->delegation.delegation_type = dsp->dtype; 6813 6814 if (dsp->dtype == OPEN_DELEGATE_READ) { 6815 open_read_delegation4 *rv = 6816 &resp->delegation.open_delegation4_u.read; 6817 6818 rv->stateid = dsp->delegid.stateid; 6819 rv->recall = FALSE; /* no policy in place to set to TRUE */ 6820 ace = &rv->permissions; 6821 } else { 6822 open_write_delegation4 *rv = 6823 &resp->delegation.open_delegation4_u.write; 6824 6825 rv->stateid = dsp->delegid.stateid; 6826 rv->recall = FALSE; /* no policy in place to set to TRUE */ 6827 ace = &rv->permissions; 6828 rv->space_limit.limitby = NFS_LIMIT_SIZE; 6829 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 6830 } 6831 6832 /* XXX For now */ 6833 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 6834 ace->flag = 0; 6835 ace->access_mask = 0; 6836 ace->who.utf8string_len = 0; 6837 ace->who.utf8string_val = 0; 6838 6839 rfs4_deleg_state_rele(dsp); 6840 rfs4_state_rele(state); 6841 rfs4_file_rele(file); 6842 } 6843 6844 typedef enum { 6845 NFS4_CHKSEQ_OKAY = 0, 6846 NFS4_CHKSEQ_REPLAY = 1, 6847 NFS4_CHKSEQ_BAD = 2 6848 } rfs4_chkseq_t; 6849 6850 /* 6851 * Generic function for sequence number checks. 6852 */ 6853 static rfs4_chkseq_t 6854 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 6855 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 6856 { 6857 /* Same sequence ids and matching operations? */ 6858 if (seqid == rqst_seq && resop->resop == lastop->resop) { 6859 if (copyres == TRUE) { 6860 rfs4_free_reply(resop); 6861 rfs4_copy_reply(resop, lastop); 6862 } 6863 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6864 "Replayed SEQID %d\n", seqid)); 6865 return (NFS4_CHKSEQ_REPLAY); 6866 } 6867 6868 /* If the incoming sequence is not the next expected then it is bad */ 6869 if (rqst_seq != seqid + 1) { 6870 if (rqst_seq == seqid) { 6871 NFS4_DEBUG(rfs4_debug, 6872 (CE_NOTE, "BAD SEQID: Replayed sequence id " 6873 "but last op was %d current op is %d\n", 6874 lastop->resop, resop->resop)); 6875 return (NFS4_CHKSEQ_BAD); 6876 } 6877 NFS4_DEBUG(rfs4_debug, 6878 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 6879 rqst_seq, seqid)); 6880 return (NFS4_CHKSEQ_BAD); 6881 } 6882 6883 /* Everything okay -- next expected */ 6884 return (NFS4_CHKSEQ_OKAY); 6885 } 6886 6887 6888 static rfs4_chkseq_t 6889 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 6890 { 6891 rfs4_chkseq_t rc; 6892 6893 rfs4_dbe_lock(op->dbe); 6894 rc = rfs4_check_seqid(op->open_seqid, op->reply, seqid, resop, TRUE); 6895 rfs4_dbe_unlock(op->dbe); 6896 6897 if (rc == NFS4_CHKSEQ_OKAY) 6898 rfs4_update_lease(op->client); 6899 6900 return (rc); 6901 } 6902 6903 static rfs4_chkseq_t 6904 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, 6905 nfs_resop4 *resop) 6906 { 6907 rfs4_chkseq_t rc; 6908 6909 rfs4_dbe_lock(op->dbe); 6910 rc = rfs4_check_seqid(op->open_seqid, op->reply, 6911 olo_seqid, resop, FALSE); 6912 rfs4_dbe_unlock(op->dbe); 6913 6914 return (rc); 6915 } 6916 6917 static rfs4_chkseq_t 6918 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lp, nfs_resop4 *resop) 6919 { 6920 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 6921 6922 rfs4_dbe_lock(lp->dbe); 6923 if (!lp->skip_seqid_check) 6924 rc = rfs4_check_seqid(lp->seqid, lp->reply, seqid, resop, TRUE); 6925 rfs4_dbe_unlock(lp->dbe); 6926 6927 return (rc); 6928 } 6929 6930 static void 6931 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 6932 struct svc_req *req, struct compound_state *cs) 6933 { 6934 OPEN4args *args = &argop->nfs_argop4_u.opopen; 6935 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 6936 open_owner4 *owner = &args->owner; 6937 open_claim_type4 claim = args->claim; 6938 rfs4_client_t *cp; 6939 rfs4_openowner_t *oo; 6940 bool_t create; 6941 bool_t replay = FALSE; 6942 int can_reclaim; 6943 6944 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 6945 OPEN4args *, args); 6946 6947 if (cs->vp == NULL) { 6948 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 6949 goto end; 6950 } 6951 6952 /* 6953 * Need to check clientid and lease expiration first based on 6954 * error ordering and incrementing sequence id. 6955 */ 6956 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 6957 if (cp == NULL) { 6958 *cs->statusp = resp->status = 6959 rfs4_check_clientid(&owner->clientid, 0); 6960 goto end; 6961 } 6962 6963 if (rfs4_lease_expired(cp)) { 6964 rfs4_client_close(cp); 6965 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 6966 goto end; 6967 } 6968 can_reclaim = cp->can_reclaim; 6969 6970 /* 6971 * Find the open_owner for use from this point forward. Take 6972 * care in updating the sequence id based on the type of error 6973 * being returned. 6974 */ 6975 retry: 6976 create = TRUE; 6977 oo = rfs4_findopenowner(owner, &create, args->seqid); 6978 if (oo == NULL) { 6979 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 6980 rfs4_client_rele(cp); 6981 goto end; 6982 } 6983 6984 /* Hold off access to the sequence space while the open is done */ 6985 rfs4_sw_enter(&oo->oo_sw); 6986 6987 /* 6988 * If the open_owner existed before at the server, then check 6989 * the sequence id. 6990 */ 6991 if (!create && !oo->postpone_confirm) { 6992 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 6993 case NFS4_CHKSEQ_BAD: 6994 if ((args->seqid > oo->open_seqid) && 6995 oo->need_confirm) { 6996 rfs4_free_opens(oo, TRUE, FALSE); 6997 rfs4_sw_exit(&oo->oo_sw); 6998 rfs4_openowner_rele(oo); 6999 goto retry; 7000 } 7001 resp->status = NFS4ERR_BAD_SEQID; 7002 goto out; 7003 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7004 replay = TRUE; 7005 goto out; 7006 default: 7007 break; 7008 } 7009 7010 /* 7011 * Sequence was ok and open owner exists 7012 * check to see if we have yet to see an 7013 * open_confirm. 7014 */ 7015 if (oo->need_confirm) { 7016 rfs4_free_opens(oo, TRUE, FALSE); 7017 rfs4_sw_exit(&oo->oo_sw); 7018 rfs4_openowner_rele(oo); 7019 goto retry; 7020 } 7021 } 7022 /* Grace only applies to regular-type OPENs */ 7023 if (rfs4_clnt_in_grace(cp) && 7024 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7025 *cs->statusp = resp->status = NFS4ERR_GRACE; 7026 goto out; 7027 } 7028 7029 /* 7030 * If previous state at the server existed then can_reclaim 7031 * will be set. If not reply NFS4ERR_NO_GRACE to the 7032 * client. 7033 */ 7034 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7035 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7036 goto out; 7037 } 7038 7039 7040 /* 7041 * Reject the open if the client has missed the grace period 7042 */ 7043 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7044 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7045 goto out; 7046 } 7047 7048 /* Couple of up-front bookkeeping items */ 7049 if (oo->need_confirm) { 7050 /* 7051 * If this is a reclaim OPEN then we should not ask 7052 * for a confirmation of the open_owner per the 7053 * protocol specification. 7054 */ 7055 if (claim == CLAIM_PREVIOUS) 7056 oo->need_confirm = FALSE; 7057 else 7058 resp->rflags |= OPEN4_RESULT_CONFIRM; 7059 } 7060 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7061 7062 /* 7063 * If there is an unshared filesystem mounted on this vnode, 7064 * do not allow to open/create in this directory. 7065 */ 7066 if (vn_ismntpt(cs->vp)) { 7067 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7068 goto out; 7069 } 7070 7071 /* 7072 * access must READ, WRITE, or BOTH. No access is invalid. 7073 * deny can be READ, WRITE, BOTH, or NONE. 7074 * bits not defined for access/deny are invalid. 7075 */ 7076 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7077 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7078 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7079 *cs->statusp = resp->status = NFS4ERR_INVAL; 7080 goto out; 7081 } 7082 7083 7084 /* 7085 * make sure attrset is zero before response is built. 7086 */ 7087 resp->attrset = 0; 7088 7089 switch (claim) { 7090 case CLAIM_NULL: 7091 rfs4_do_opennull(cs, req, args, oo, resp); 7092 break; 7093 case CLAIM_PREVIOUS: 7094 rfs4_do_openprev(cs, req, args, oo, resp); 7095 break; 7096 case CLAIM_DELEGATE_CUR: 7097 rfs4_do_opendelcur(cs, req, args, oo, resp); 7098 break; 7099 case CLAIM_DELEGATE_PREV: 7100 rfs4_do_opendelprev(cs, req, args, oo, resp); 7101 break; 7102 default: 7103 resp->status = NFS4ERR_INVAL; 7104 break; 7105 } 7106 7107 out: 7108 rfs4_client_rele(cp); 7109 7110 /* Catch sequence id handling here to make it a little easier */ 7111 switch (resp->status) { 7112 case NFS4ERR_BADXDR: 7113 case NFS4ERR_BAD_SEQID: 7114 case NFS4ERR_BAD_STATEID: 7115 case NFS4ERR_NOFILEHANDLE: 7116 case NFS4ERR_RESOURCE: 7117 case NFS4ERR_STALE_CLIENTID: 7118 case NFS4ERR_STALE_STATEID: 7119 /* 7120 * The protocol states that if any of these errors are 7121 * being returned, the sequence id should not be 7122 * incremented. Any other return requires an 7123 * increment. 7124 */ 7125 break; 7126 default: 7127 /* Always update the lease in this case */ 7128 rfs4_update_lease(oo->client); 7129 7130 /* Regular response - copy the result */ 7131 if (!replay) 7132 rfs4_update_open_resp(oo, resop, &cs->fh); 7133 7134 /* 7135 * REPLAY case: Only if the previous response was OK 7136 * do we copy the filehandle. If not OK, no 7137 * filehandle to copy. 7138 */ 7139 if (replay == TRUE && 7140 resp->status == NFS4_OK && 7141 oo->reply_fh.nfs_fh4_val) { 7142 /* 7143 * If this is a replay, we must restore the 7144 * current filehandle/vp to that of what was 7145 * returned originally. Try our best to do 7146 * it. 7147 */ 7148 nfs_fh4_fmt_t *fh_fmtp = 7149 (nfs_fh4_fmt_t *)oo->reply_fh.nfs_fh4_val; 7150 7151 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7152 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7153 7154 if (cs->exi == NULL) { 7155 resp->status = NFS4ERR_STALE; 7156 goto finish; 7157 } 7158 7159 VN_RELE(cs->vp); 7160 7161 cs->vp = nfs4_fhtovp(&oo->reply_fh, cs->exi, 7162 &resp->status); 7163 7164 if (cs->vp == NULL) 7165 goto finish; 7166 7167 nfs_fh4_copy(&oo->reply_fh, &cs->fh); 7168 } 7169 7170 /* 7171 * If this was a replay, no need to update the 7172 * sequence id. If the open_owner was not created on 7173 * this pass, then update. The first use of an 7174 * open_owner will not bump the sequence id. 7175 */ 7176 if (replay == FALSE && !create) 7177 rfs4_update_open_sequence(oo); 7178 /* 7179 * If the client is receiving an error and the 7180 * open_owner needs to be confirmed, there is no way 7181 * to notify the client of this fact ignoring the fact 7182 * that the server has no method of returning a 7183 * stateid to confirm. Therefore, the server needs to 7184 * mark this open_owner in a way as to avoid the 7185 * sequence id checking the next time the client uses 7186 * this open_owner. 7187 */ 7188 if (resp->status != NFS4_OK && oo->need_confirm) 7189 oo->postpone_confirm = TRUE; 7190 /* 7191 * If OK response then clear the postpone flag and 7192 * reset the sequence id to keep in sync with the 7193 * client. 7194 */ 7195 if (resp->status == NFS4_OK && oo->postpone_confirm) { 7196 oo->postpone_confirm = FALSE; 7197 oo->open_seqid = args->seqid; 7198 } 7199 break; 7200 } 7201 7202 finish: 7203 *cs->statusp = resp->status; 7204 7205 rfs4_sw_exit(&oo->oo_sw); 7206 rfs4_openowner_rele(oo); 7207 7208 end: 7209 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7210 OPEN4res *, resp); 7211 } 7212 7213 /*ARGSUSED*/ 7214 void 7215 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7216 struct svc_req *req, struct compound_state *cs) 7217 { 7218 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7219 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7220 rfs4_state_t *sp; 7221 nfsstat4 status; 7222 7223 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7224 OPEN_CONFIRM4args *, args); 7225 7226 if (cs->vp == NULL) { 7227 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7228 goto out; 7229 } 7230 7231 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7232 if (status != NFS4_OK) { 7233 *cs->statusp = resp->status = status; 7234 goto out; 7235 } 7236 7237 /* Ensure specified filehandle matches */ 7238 if (cs->vp != sp->finfo->vp) { 7239 rfs4_state_rele(sp); 7240 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7241 goto out; 7242 } 7243 7244 /* hold off other access to open_owner while we tinker */ 7245 rfs4_sw_enter(&sp->owner->oo_sw); 7246 7247 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7248 case NFS4_CHECK_STATEID_OKAY: 7249 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7250 resop) != 0) { 7251 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7252 break; 7253 } 7254 /* 7255 * If it is the appropriate stateid and determined to 7256 * be "OKAY" then this means that the stateid does not 7257 * need to be confirmed and the client is in error for 7258 * sending an OPEN_CONFIRM. 7259 */ 7260 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7261 break; 7262 case NFS4_CHECK_STATEID_OLD: 7263 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7264 break; 7265 case NFS4_CHECK_STATEID_BAD: 7266 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7267 break; 7268 case NFS4_CHECK_STATEID_EXPIRED: 7269 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7270 break; 7271 case NFS4_CHECK_STATEID_CLOSED: 7272 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7273 break; 7274 case NFS4_CHECK_STATEID_REPLAY: 7275 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7276 case NFS4_CHKSEQ_OKAY: 7277 /* 7278 * This is replayed stateid; if seqid matches 7279 * next expected, then client is using wrong seqid. 7280 */ 7281 /* fall through */ 7282 case NFS4_CHKSEQ_BAD: 7283 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7284 break; 7285 case NFS4_CHKSEQ_REPLAY: 7286 /* 7287 * Note this case is the duplicate case so 7288 * resp->status is already set. 7289 */ 7290 *cs->statusp = resp->status; 7291 rfs4_update_lease(sp->owner->client); 7292 break; 7293 } 7294 break; 7295 case NFS4_CHECK_STATEID_UNCONFIRMED: 7296 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7297 resop) != NFS4_CHKSEQ_OKAY) { 7298 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7299 break; 7300 } 7301 *cs->statusp = resp->status = NFS4_OK; 7302 7303 next_stateid(&sp->stateid); 7304 resp->open_stateid = sp->stateid.stateid; 7305 sp->owner->need_confirm = FALSE; 7306 rfs4_update_lease(sp->owner->client); 7307 rfs4_update_open_sequence(sp->owner); 7308 rfs4_update_open_resp(sp->owner, resop, NULL); 7309 break; 7310 default: 7311 ASSERT(FALSE); 7312 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7313 break; 7314 } 7315 rfs4_sw_exit(&sp->owner->oo_sw); 7316 rfs4_state_rele(sp); 7317 7318 out: 7319 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7320 OPEN_CONFIRM4res *, resp); 7321 } 7322 7323 /*ARGSUSED*/ 7324 void 7325 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7326 struct svc_req *req, struct compound_state *cs) 7327 { 7328 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7329 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7330 uint32_t access = args->share_access; 7331 uint32_t deny = args->share_deny; 7332 nfsstat4 status; 7333 rfs4_state_t *sp; 7334 rfs4_file_t *fp; 7335 int fflags = 0; 7336 7337 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7338 OPEN_DOWNGRADE4args *, args); 7339 7340 if (cs->vp == NULL) { 7341 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7342 goto out; 7343 } 7344 7345 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7346 if (status != NFS4_OK) { 7347 *cs->statusp = resp->status = status; 7348 goto out; 7349 } 7350 7351 /* Ensure specified filehandle matches */ 7352 if (cs->vp != sp->finfo->vp) { 7353 rfs4_state_rele(sp); 7354 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7355 goto out; 7356 } 7357 7358 /* hold off other access to open_owner while we tinker */ 7359 rfs4_sw_enter(&sp->owner->oo_sw); 7360 7361 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7362 case NFS4_CHECK_STATEID_OKAY: 7363 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7364 resop) != NFS4_CHKSEQ_OKAY) { 7365 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7366 goto end; 7367 } 7368 break; 7369 case NFS4_CHECK_STATEID_OLD: 7370 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7371 goto end; 7372 case NFS4_CHECK_STATEID_BAD: 7373 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7374 goto end; 7375 case NFS4_CHECK_STATEID_EXPIRED: 7376 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7377 goto end; 7378 case NFS4_CHECK_STATEID_CLOSED: 7379 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7380 goto end; 7381 case NFS4_CHECK_STATEID_UNCONFIRMED: 7382 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7383 goto end; 7384 case NFS4_CHECK_STATEID_REPLAY: 7385 /* Check the sequence id for the open owner */ 7386 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7387 case NFS4_CHKSEQ_OKAY: 7388 /* 7389 * This is replayed stateid; if seqid matches 7390 * next expected, then client is using wrong seqid. 7391 */ 7392 /* fall through */ 7393 case NFS4_CHKSEQ_BAD: 7394 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7395 goto end; 7396 case NFS4_CHKSEQ_REPLAY: 7397 /* 7398 * Note this case is the duplicate case so 7399 * resp->status is already set. 7400 */ 7401 *cs->statusp = resp->status; 7402 rfs4_update_lease(sp->owner->client); 7403 goto end; 7404 } 7405 break; 7406 default: 7407 ASSERT(FALSE); 7408 break; 7409 } 7410 7411 rfs4_dbe_lock(sp->dbe); 7412 /* 7413 * Check that the new access modes and deny modes are valid. 7414 * Check that no invalid bits are set. 7415 */ 7416 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7417 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7418 *cs->statusp = resp->status = NFS4ERR_INVAL; 7419 rfs4_update_open_sequence(sp->owner); 7420 rfs4_dbe_unlock(sp->dbe); 7421 goto end; 7422 } 7423 7424 /* 7425 * The new modes must be a subset of the current modes and 7426 * the access must specify at least one mode. To test that 7427 * the new mode is a subset of the current modes we bitwise 7428 * AND them together and check that the result equals the new 7429 * mode. For example: 7430 * New mode, access == R and current mode, sp->share_access == RW 7431 * access & sp->share_access == R == access, so the new access mode 7432 * is valid. Consider access == RW, sp->share_access = R 7433 * access & sp->share_access == R != access, so the new access mode 7434 * is invalid. 7435 */ 7436 if ((access & sp->share_access) != access || 7437 (deny & sp->share_deny) != deny || 7438 (access & 7439 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7440 *cs->statusp = resp->status = NFS4ERR_INVAL; 7441 rfs4_update_open_sequence(sp->owner); 7442 rfs4_dbe_unlock(sp->dbe); 7443 goto end; 7444 } 7445 7446 /* 7447 * Release any share locks associated with this stateID. 7448 * Strictly speaking, this violates the spec because the 7449 * spec effectively requires that open downgrade be atomic. 7450 * At present, fs_shrlock does not have this capability. 7451 */ 7452 rfs4_dbe_unlock(sp->dbe); 7453 rfs4_unshare(sp); 7454 rfs4_dbe_lock(sp->dbe); 7455 7456 fp = sp->finfo; 7457 rfs4_dbe_lock(fp->dbe); 7458 7459 /* 7460 * If the current mode has deny read and the new mode 7461 * does not, decrement the number of deny read mode bits 7462 * and if it goes to zero turn off the deny read bit 7463 * on the file. 7464 */ 7465 if ((sp->share_deny & OPEN4_SHARE_DENY_READ) && 7466 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7467 fp->deny_read--; 7468 if (fp->deny_read == 0) 7469 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 7470 } 7471 7472 /* 7473 * If the current mode has deny write and the new mode 7474 * does not, decrement the number of deny write mode bits 7475 * and if it goes to zero turn off the deny write bit 7476 * on the file. 7477 */ 7478 if ((sp->share_deny & OPEN4_SHARE_DENY_WRITE) && 7479 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7480 fp->deny_write--; 7481 if (fp->deny_write == 0) 7482 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7483 } 7484 7485 /* 7486 * If the current mode has access read and the new mode 7487 * does not, decrement the number of access read mode bits 7488 * and if it goes to zero turn off the access read bit 7489 * on the file. set fflags to FREAD for the call to 7490 * vn_open_downgrade(). 7491 */ 7492 if ((sp->share_access & OPEN4_SHARE_ACCESS_READ) && 7493 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7494 fp->access_read--; 7495 if (fp->access_read == 0) 7496 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7497 fflags |= FREAD; 7498 } 7499 7500 /* 7501 * If the current mode has access write and the new mode 7502 * does not, decrement the number of access write mode bits 7503 * and if it goes to zero turn off the access write bit 7504 * on the file. set fflags to FWRITE for the call to 7505 * vn_open_downgrade(). 7506 */ 7507 if ((sp->share_access & OPEN4_SHARE_ACCESS_WRITE) && 7508 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7509 fp->access_write--; 7510 if (fp->access_write == 0) 7511 fp->share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7512 fflags |= FWRITE; 7513 } 7514 7515 /* Set the new access and deny modes */ 7516 sp->share_access = access; 7517 sp->share_deny = deny; 7518 /* Check that the file is still accessible */ 7519 ASSERT(fp->share_access); 7520 7521 rfs4_dbe_unlock(fp->dbe); 7522 7523 rfs4_dbe_unlock(sp->dbe); 7524 7525 if ((status = rfs4_share(sp)) != NFS4_OK) { 7526 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7527 rfs4_update_open_sequence(sp->owner); 7528 goto end; 7529 } 7530 7531 /* 7532 * we successfully downgraded the share lock, now we need to downgrade 7533 * the open. it is possible that the downgrade was only for a deny 7534 * mode and we have nothing else to do. 7535 */ 7536 if ((fflags & (FREAD|FWRITE)) != 0) 7537 vn_open_downgrade(cs->vp, fflags); 7538 7539 rfs4_dbe_lock(sp->dbe); 7540 7541 /* Update the stateid */ 7542 next_stateid(&sp->stateid); 7543 resp->open_stateid = sp->stateid.stateid; 7544 7545 rfs4_dbe_unlock(sp->dbe); 7546 7547 *cs->statusp = resp->status = NFS4_OK; 7548 /* Update the lease */ 7549 rfs4_update_lease(sp->owner->client); 7550 /* And the sequence */ 7551 rfs4_update_open_sequence(sp->owner); 7552 rfs4_update_open_resp(sp->owner, resop, NULL); 7553 7554 end: 7555 rfs4_sw_exit(&sp->owner->oo_sw); 7556 rfs4_state_rele(sp); 7557 out: 7558 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7559 OPEN_DOWNGRADE4res *, resp); 7560 } 7561 7562 /* 7563 * The logic behind this function is detailed in the NFSv4 RFC in the 7564 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7565 * that section for explicit guidance to server behavior for 7566 * SETCLIENTID. 7567 */ 7568 void 7569 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7570 struct svc_req *req, struct compound_state *cs) 7571 { 7572 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7573 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7574 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7575 bool_t create = TRUE; 7576 char *addr, *netid; 7577 int len; 7578 7579 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7580 SETCLIENTID4args *, args); 7581 retry: 7582 newcp = cp_confirmed = cp_unconfirmed = NULL; 7583 7584 /* 7585 * In search of an EXISTING client matching the incoming 7586 * request to establish a new client identifier at the server 7587 */ 7588 create = TRUE; 7589 cp = rfs4_findclient(&args->client, &create, NULL); 7590 7591 /* Should never happen */ 7592 ASSERT(cp != NULL); 7593 7594 if (cp == NULL) { 7595 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7596 goto out; 7597 } 7598 7599 /* 7600 * Easiest case. Client identifier is newly created and is 7601 * unconfirmed. Also note that for this case, no other 7602 * entries exist for the client identifier. Nothing else to 7603 * check. Just setup the response and respond. 7604 */ 7605 if (create) { 7606 *cs->statusp = res->status = NFS4_OK; 7607 res->SETCLIENTID4res_u.resok4.clientid = cp->clientid; 7608 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7609 cp->confirm_verf; 7610 /* Setup callback information; CB_NULL confirmation later */ 7611 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 7612 7613 rfs4_client_rele(cp); 7614 goto out; 7615 } 7616 7617 /* 7618 * An existing, confirmed client may exist but it may not have 7619 * been active for at least one lease period. If so, then 7620 * "close" the client and create a new client identifier 7621 */ 7622 if (rfs4_lease_expired(cp)) { 7623 rfs4_client_close(cp); 7624 goto retry; 7625 } 7626 7627 if (cp->need_confirm == TRUE) 7628 cp_unconfirmed = cp; 7629 else 7630 cp_confirmed = cp; 7631 7632 cp = NULL; 7633 7634 /* 7635 * We have a confirmed client, now check for an 7636 * unconfimred entry 7637 */ 7638 if (cp_confirmed) { 7639 /* If creds don't match then client identifier is inuse */ 7640 if (!creds_ok(cp_confirmed->cr_set, req, cs)) { 7641 rfs4_cbinfo_t *cbp; 7642 /* 7643 * Some one else has established this client 7644 * id. Try and say * who they are. We will use 7645 * the call back address supplied by * the 7646 * first client. 7647 */ 7648 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7649 7650 addr = netid = NULL; 7651 7652 cbp = &cp_confirmed->cbinfo; 7653 if (cbp->cb_callback.cb_location.r_addr && 7654 cbp->cb_callback.cb_location.r_netid) { 7655 cb_client4 *cbcp = &cbp->cb_callback; 7656 7657 len = strlen(cbcp->cb_location.r_addr)+1; 7658 addr = kmem_alloc(len, KM_SLEEP); 7659 bcopy(cbcp->cb_location.r_addr, addr, len); 7660 len = strlen(cbcp->cb_location.r_netid)+1; 7661 netid = kmem_alloc(len, KM_SLEEP); 7662 bcopy(cbcp->cb_location.r_netid, netid, len); 7663 } 7664 7665 res->SETCLIENTID4res_u.client_using.r_addr = addr; 7666 res->SETCLIENTID4res_u.client_using.r_netid = netid; 7667 7668 rfs4_client_rele(cp_confirmed); 7669 } 7670 7671 /* 7672 * Confirmed, creds match, and verifier matches; must 7673 * be an update of the callback info 7674 */ 7675 if (cp_confirmed->nfs_client.verifier == 7676 args->client.verifier) { 7677 /* Setup callback information */ 7678 rfs4_client_setcb(cp_confirmed, &args->callback, 7679 args->callback_ident); 7680 7681 /* everything okay -- move ahead */ 7682 *cs->statusp = res->status = NFS4_OK; 7683 res->SETCLIENTID4res_u.resok4.clientid = 7684 cp_confirmed->clientid; 7685 7686 /* update the confirm_verifier and return it */ 7687 rfs4_client_scv_next(cp_confirmed); 7688 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7689 cp_confirmed->confirm_verf; 7690 7691 rfs4_client_rele(cp_confirmed); 7692 goto out; 7693 } 7694 7695 /* 7696 * Creds match but the verifier doesn't. Must search 7697 * for an unconfirmed client that would be replaced by 7698 * this request. 7699 */ 7700 create = FALSE; 7701 cp_unconfirmed = rfs4_findclient(&args->client, &create, 7702 cp_confirmed); 7703 } 7704 7705 /* 7706 * At this point, we have taken care of the brand new client 7707 * struct, INUSE case, update of an existing, and confirmed 7708 * client struct. 7709 */ 7710 7711 /* 7712 * check to see if things have changed while we originally 7713 * picked up the client struct. If they have, then return and 7714 * retry the processing of this SETCLIENTID request. 7715 */ 7716 if (cp_unconfirmed) { 7717 rfs4_dbe_lock(cp_unconfirmed->dbe); 7718 if (!cp_unconfirmed->need_confirm) { 7719 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7720 rfs4_client_rele(cp_unconfirmed); 7721 if (cp_confirmed) 7722 rfs4_client_rele(cp_confirmed); 7723 goto retry; 7724 } 7725 /* do away with the old unconfirmed one */ 7726 rfs4_dbe_invalidate(cp_unconfirmed->dbe); 7727 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7728 rfs4_client_rele(cp_unconfirmed); 7729 cp_unconfirmed = NULL; 7730 } 7731 7732 /* 7733 * This search will temporarily hide the confirmed client 7734 * struct while a new client struct is created as the 7735 * unconfirmed one. 7736 */ 7737 create = TRUE; 7738 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 7739 7740 ASSERT(newcp != NULL); 7741 7742 if (newcp == NULL) { 7743 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7744 rfs4_client_rele(cp_confirmed); 7745 goto out; 7746 } 7747 7748 /* 7749 * If one was not created, then a similar request must be in 7750 * process so release and start over with this one 7751 */ 7752 if (create != TRUE) { 7753 rfs4_client_rele(newcp); 7754 if (cp_confirmed) 7755 rfs4_client_rele(cp_confirmed); 7756 goto retry; 7757 } 7758 7759 *cs->statusp = res->status = NFS4_OK; 7760 res->SETCLIENTID4res_u.resok4.clientid = newcp->clientid; 7761 res->SETCLIENTID4res_u.resok4.setclientid_confirm = newcp->confirm_verf; 7762 /* Setup callback information; CB_NULL confirmation later */ 7763 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 7764 7765 newcp->cp_confirmed = cp_confirmed; 7766 7767 rfs4_client_rele(newcp); 7768 7769 out: 7770 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 7771 SETCLIENTID4res *, res); 7772 } 7773 7774 /*ARGSUSED*/ 7775 void 7776 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7777 struct svc_req *req, struct compound_state *cs) 7778 { 7779 SETCLIENTID_CONFIRM4args *args = 7780 &argop->nfs_argop4_u.opsetclientid_confirm; 7781 SETCLIENTID_CONFIRM4res *res = 7782 &resop->nfs_resop4_u.opsetclientid_confirm; 7783 rfs4_client_t *cp, *cptoclose = NULL; 7784 7785 DTRACE_NFSV4_2(op__setclientid__confirm__start, 7786 struct compound_state *, cs, 7787 SETCLIENTID_CONFIRM4args *, args); 7788 7789 *cs->statusp = res->status = NFS4_OK; 7790 7791 cp = rfs4_findclient_by_id(args->clientid, TRUE); 7792 7793 if (cp == NULL) { 7794 *cs->statusp = res->status = 7795 rfs4_check_clientid(&args->clientid, 1); 7796 goto out; 7797 } 7798 7799 if (!creds_ok(cp, req, cs)) { 7800 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7801 rfs4_client_rele(cp); 7802 goto out; 7803 } 7804 7805 /* If the verifier doesn't match, the record doesn't match */ 7806 if (cp->confirm_verf != args->setclientid_confirm) { 7807 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 7808 rfs4_client_rele(cp); 7809 goto out; 7810 } 7811 7812 rfs4_dbe_lock(cp->dbe); 7813 cp->need_confirm = FALSE; 7814 if (cp->cp_confirmed) { 7815 cptoclose = cp->cp_confirmed; 7816 cptoclose->ss_remove = 1; 7817 cp->cp_confirmed = NULL; 7818 } 7819 7820 /* 7821 * Update the client's associated server instance, if it's changed 7822 * since the client was created. 7823 */ 7824 if (rfs4_servinst(cp) != rfs4_cur_servinst) 7825 rfs4_servinst_assign(cp, rfs4_cur_servinst); 7826 7827 /* 7828 * Record clientid in stable storage. 7829 * Must be done after server instance has been assigned. 7830 */ 7831 rfs4_ss_clid(cp, req); 7832 7833 rfs4_dbe_unlock(cp->dbe); 7834 7835 if (cptoclose) 7836 /* don't need to rele, client_close does it */ 7837 rfs4_client_close(cptoclose); 7838 7839 /* If needed, initiate CB_NULL call for callback path */ 7840 rfs4_deleg_cb_check(cp); 7841 rfs4_update_lease(cp); 7842 7843 /* 7844 * Check to see if client can perform reclaims 7845 */ 7846 rfs4_ss_chkclid(cp); 7847 7848 rfs4_client_rele(cp); 7849 7850 out: 7851 DTRACE_NFSV4_2(op__setclientid__confirm__done, 7852 struct compound_state *, cs, 7853 SETCLIENTID_CONFIRM4 *, res); 7854 } 7855 7856 7857 /*ARGSUSED*/ 7858 void 7859 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 7860 struct svc_req *req, struct compound_state *cs) 7861 { 7862 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 7863 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 7864 rfs4_state_t *sp; 7865 nfsstat4 status; 7866 7867 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 7868 CLOSE4args *, args); 7869 7870 if (cs->vp == NULL) { 7871 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7872 goto out; 7873 } 7874 7875 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 7876 if (status != NFS4_OK) { 7877 *cs->statusp = resp->status = status; 7878 goto out; 7879 } 7880 7881 /* Ensure specified filehandle matches */ 7882 if (cs->vp != sp->finfo->vp) { 7883 rfs4_state_rele(sp); 7884 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7885 goto out; 7886 } 7887 7888 /* hold off other access to open_owner while we tinker */ 7889 rfs4_sw_enter(&sp->owner->oo_sw); 7890 7891 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7892 case NFS4_CHECK_STATEID_OKAY: 7893 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7894 resop) != NFS4_CHKSEQ_OKAY) { 7895 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7896 goto end; 7897 } 7898 break; 7899 case NFS4_CHECK_STATEID_OLD: 7900 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7901 goto end; 7902 case NFS4_CHECK_STATEID_BAD: 7903 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7904 goto end; 7905 case NFS4_CHECK_STATEID_EXPIRED: 7906 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7907 goto end; 7908 case NFS4_CHECK_STATEID_CLOSED: 7909 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7910 goto end; 7911 case NFS4_CHECK_STATEID_UNCONFIRMED: 7912 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7913 goto end; 7914 case NFS4_CHECK_STATEID_REPLAY: 7915 /* Check the sequence id for the open owner */ 7916 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7917 case NFS4_CHKSEQ_OKAY: 7918 /* 7919 * This is replayed stateid; if seqid matches 7920 * next expected, then client is using wrong seqid. 7921 */ 7922 /* FALL THROUGH */ 7923 case NFS4_CHKSEQ_BAD: 7924 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7925 goto end; 7926 case NFS4_CHKSEQ_REPLAY: 7927 /* 7928 * Note this case is the duplicate case so 7929 * resp->status is already set. 7930 */ 7931 *cs->statusp = resp->status; 7932 rfs4_update_lease(sp->owner->client); 7933 goto end; 7934 } 7935 break; 7936 default: 7937 ASSERT(FALSE); 7938 break; 7939 } 7940 7941 rfs4_dbe_lock(sp->dbe); 7942 7943 /* Update the stateid. */ 7944 next_stateid(&sp->stateid); 7945 resp->open_stateid = sp->stateid.stateid; 7946 7947 rfs4_dbe_unlock(sp->dbe); 7948 7949 rfs4_update_lease(sp->owner->client); 7950 rfs4_update_open_sequence(sp->owner); 7951 rfs4_update_open_resp(sp->owner, resop, NULL); 7952 7953 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7954 7955 *cs->statusp = resp->status = status; 7956 7957 end: 7958 rfs4_sw_exit(&sp->owner->oo_sw); 7959 rfs4_state_rele(sp); 7960 out: 7961 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 7962 CLOSE4res *, resp); 7963 } 7964 7965 /* 7966 * Manage the counts on the file struct and close all file locks 7967 */ 7968 /*ARGSUSED*/ 7969 void 7970 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 7971 bool_t close_of_client) 7972 { 7973 rfs4_file_t *fp = sp->finfo; 7974 rfs4_lo_state_t *lsp; 7975 struct shrlock shr; 7976 struct shr_locowner shr_loco; 7977 int fflags, s_access, s_deny; 7978 7979 fflags = s_access = s_deny = 0; 7980 /* 7981 * Decrement the count for each access and deny bit that this 7982 * state has contributed to the file. If the file counts go to zero 7983 * clear the appropriate bit in the appropriate mask. 7984 */ 7985 7986 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 7987 fp->access_read--; 7988 fflags |= FREAD; 7989 s_access |= F_RDACC; 7990 if (fp->access_read == 0) 7991 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7992 } 7993 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 7994 fp->access_write--; 7995 fflags |= FWRITE; 7996 s_access |= F_WRACC; 7997 if (fp->access_write == 0) 7998 fp->share_access &= ~OPEN4_SHARE_ACCESS_WRITE; 7999 } 8000 if (sp->share_deny & OPEN4_SHARE_DENY_READ) { 8001 fp->deny_read--; 8002 s_deny |= F_RDDNY; 8003 if (fp->deny_read == 0) 8004 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 8005 } 8006 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) { 8007 fp->deny_write--; 8008 s_deny |= F_WRDNY; 8009 if (fp->deny_write == 0) 8010 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8011 } 8012 8013 /* 8014 * If this call is part of the larger closing down of client 8015 * state then it is just easier to release all locks 8016 * associated with this client instead of going through each 8017 * individual file and cleaning locks there. 8018 */ 8019 if (close_of_client) { 8020 if (sp->owner->client->unlksys_completed == FALSE && 8021 sp->lockownerlist.next->lsp != NULL && 8022 sp->owner->client->sysidt != LM_NOSYSID) { 8023 /* Is the PxFS kernel module loaded? */ 8024 if (lm_remove_file_locks != NULL) { 8025 int new_sysid; 8026 8027 /* Encode the cluster nodeid in new sysid */ 8028 new_sysid = sp->owner->client->sysidt; 8029 lm_set_nlmid_flk(&new_sysid); 8030 8031 /* 8032 * This PxFS routine removes file locks for a 8033 * client over all nodes of a cluster. 8034 */ 8035 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8036 "lm_remove_file_locks(sysid=0x%x)\n", 8037 new_sysid)); 8038 (*lm_remove_file_locks)(new_sysid); 8039 } else { 8040 struct flock64 flk; 8041 8042 /* Release all locks for this client */ 8043 flk.l_type = F_UNLKSYS; 8044 flk.l_whence = 0; 8045 flk.l_start = 0; 8046 flk.l_len = 0; 8047 flk.l_sysid = sp->owner->client->sysidt; 8048 flk.l_pid = 0; 8049 (void) VOP_FRLOCK(sp->finfo->vp, F_SETLK, &flk, 8050 F_REMOTELOCK | FREAD | FWRITE, 8051 (u_offset_t)0, NULL, CRED(), NULL); 8052 } 8053 8054 sp->owner->client->unlksys_completed = TRUE; 8055 } 8056 } 8057 8058 /* 8059 * Release all locks on this file by this lock owner or at 8060 * least mark the locks as having been released 8061 */ 8062 for (lsp = sp->lockownerlist.next->lsp; lsp != NULL; 8063 lsp = lsp->lockownerlist.next->lsp) { 8064 8065 lsp->locks_cleaned = TRUE; 8066 8067 /* Was this already taken care of above? */ 8068 if (!close_of_client && 8069 sp->owner->client->sysidt != LM_NOSYSID) 8070 (void) cleanlocks(sp->finfo->vp, lsp->locker->pid, 8071 lsp->locker->client->sysidt); 8072 } 8073 8074 /* 8075 * Release any shrlocks associated with this open state ID. 8076 * This must be done before the rfs4_state gets marked closed. 8077 */ 8078 if (sp->owner->client->sysidt != LM_NOSYSID) { 8079 shr.s_access = s_access; 8080 shr.s_deny = s_deny; 8081 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 8082 shr.s_sysid = sp->owner->client->sysidt; 8083 shr_loco.sl_pid = shr.s_pid; 8084 shr_loco.sl_id = shr.s_sysid; 8085 shr.s_owner = (caddr_t)&shr_loco; 8086 shr.s_own_len = sizeof (shr_loco); 8087 (void) vop_shrlock(sp->finfo->vp, F_UNSHARE, &shr, fflags); 8088 } 8089 8090 (void) VOP_CLOSE(fp->vp, fflags, 1, (offset_t)0, cr, NULL); 8091 } 8092 8093 /* 8094 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8095 */ 8096 static nfsstat4 8097 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8098 { 8099 rfs4_lockowner_t *lo; 8100 rfs4_client_t *cp; 8101 uint32_t len; 8102 8103 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8104 if (lo != NULL) { 8105 cp = lo->client; 8106 if (rfs4_lease_expired(cp)) { 8107 rfs4_lockowner_rele(lo); 8108 rfs4_dbe_hold(cp->dbe); 8109 rfs4_client_close(cp); 8110 return (NFS4ERR_EXPIRED); 8111 } 8112 dp->owner.clientid = lo->owner.clientid; 8113 len = lo->owner.owner_len; 8114 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8115 bcopy(lo->owner.owner_val, dp->owner.owner_val, len); 8116 dp->owner.owner_len = len; 8117 rfs4_lockowner_rele(lo); 8118 goto finish; 8119 } 8120 8121 /* 8122 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8123 * of the client id contain the boot time for a NFS4 lock. So we 8124 * fabricate and identity by setting clientid to the sysid, and 8125 * the lock owner to the pid. 8126 */ 8127 dp->owner.clientid = flk->l_sysid; 8128 len = sizeof (pid_t); 8129 dp->owner.owner_len = len; 8130 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8131 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8132 finish: 8133 dp->offset = flk->l_start; 8134 dp->length = flk->l_len; 8135 8136 if (flk->l_type == F_RDLCK) 8137 dp->locktype = READ_LT; 8138 else if (flk->l_type == F_WRLCK) 8139 dp->locktype = WRITE_LT; 8140 else 8141 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8142 8143 return (NFS4_OK); 8144 } 8145 8146 static int 8147 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8148 { 8149 int error; 8150 struct flock64 flk; 8151 int i; 8152 clock_t delaytime; 8153 int cmd; 8154 8155 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8156 retry: 8157 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8158 8159 for (i = 0; i < rfs4_maxlock_tries; i++) { 8160 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8161 error = VOP_FRLOCK(vp, cmd, 8162 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8163 8164 if (error != EAGAIN && error != EACCES) 8165 break; 8166 8167 if (i < rfs4_maxlock_tries - 1) { 8168 delay(delaytime); 8169 delaytime *= 2; 8170 } 8171 } 8172 8173 if (error == EAGAIN || error == EACCES) { 8174 /* Get the owner of the lock */ 8175 flk = *flock; 8176 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8177 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8178 (u_offset_t)0, NULL, cred, NULL) == 0) { 8179 if (flk.l_type == F_UNLCK) { 8180 /* No longer locked, retry */ 8181 goto retry; 8182 } 8183 *flock = flk; 8184 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8185 F_GETLK, &flk); 8186 } 8187 } 8188 8189 return (error); 8190 } 8191 8192 /*ARGSUSED*/ 8193 static nfsstat4 8194 rfs4_do_lock(rfs4_lo_state_t *lp, nfs_lock_type4 locktype, 8195 seqid4 seqid, offset4 offset, 8196 length4 length, cred_t *cred, nfs_resop4 *resop) 8197 { 8198 nfsstat4 status; 8199 rfs4_lockowner_t *lo = lp->locker; 8200 rfs4_state_t *sp = lp->state; 8201 struct flock64 flock; 8202 int16_t ltype; 8203 int flag; 8204 int error; 8205 sysid_t sysid; 8206 LOCK4res *lres; 8207 8208 if (rfs4_lease_expired(lo->client)) { 8209 return (NFS4ERR_EXPIRED); 8210 } 8211 8212 if ((status = rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 8213 return (status); 8214 8215 /* Check for zero length. To lock to end of file use all ones for V4 */ 8216 if (length == 0) 8217 return (NFS4ERR_INVAL); 8218 else if (length == (length4)(~0)) 8219 length = 0; /* Posix to end of file */ 8220 8221 retry: 8222 rfs4_dbe_lock(sp->dbe); 8223 8224 8225 if (resop->resop != OP_LOCKU) { 8226 switch (locktype) { 8227 case READ_LT: 8228 case READW_LT: 8229 if ((sp->share_access 8230 & OPEN4_SHARE_ACCESS_READ) == 0) { 8231 rfs4_dbe_unlock(sp->dbe); 8232 8233 return (NFS4ERR_OPENMODE); 8234 } 8235 ltype = F_RDLCK; 8236 break; 8237 case WRITE_LT: 8238 case WRITEW_LT: 8239 if ((sp->share_access 8240 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8241 rfs4_dbe_unlock(sp->dbe); 8242 8243 return (NFS4ERR_OPENMODE); 8244 } 8245 ltype = F_WRLCK; 8246 break; 8247 } 8248 } else 8249 ltype = F_UNLCK; 8250 8251 flock.l_type = ltype; 8252 flock.l_whence = 0; /* SEEK_SET */ 8253 flock.l_start = offset; 8254 flock.l_len = length; 8255 flock.l_sysid = sysid; 8256 flock.l_pid = lp->locker->pid; 8257 8258 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8259 if (flock.l_len < 0 || flock.l_start < 0) { 8260 rfs4_dbe_unlock(sp->dbe); 8261 return (NFS4ERR_INVAL); 8262 } 8263 8264 /* 8265 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8266 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8267 */ 8268 flag = (int)sp->share_access | F_REMOTELOCK; 8269 8270 error = setlock(sp->finfo->vp, &flock, flag, cred); 8271 if (error == 0) { 8272 rfs4_dbe_lock(lp->dbe); 8273 next_stateid(&lp->lockid); 8274 rfs4_dbe_unlock(lp->dbe); 8275 } 8276 8277 rfs4_dbe_unlock(sp->dbe); 8278 8279 /* 8280 * N.B. We map error values to nfsv4 errors. This is differrent 8281 * than puterrno4 routine. 8282 */ 8283 switch (error) { 8284 case 0: 8285 status = NFS4_OK; 8286 break; 8287 case EAGAIN: 8288 case EACCES: /* Old value */ 8289 /* Can only get here if op is OP_LOCK */ 8290 ASSERT(resop->resop == OP_LOCK); 8291 lres = &resop->nfs_resop4_u.oplock; 8292 status = NFS4ERR_DENIED; 8293 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8294 == NFS4ERR_EXPIRED) 8295 goto retry; 8296 break; 8297 case ENOLCK: 8298 status = NFS4ERR_DELAY; 8299 break; 8300 case EOVERFLOW: 8301 status = NFS4ERR_INVAL; 8302 break; 8303 case EINVAL: 8304 status = NFS4ERR_NOTSUPP; 8305 break; 8306 default: 8307 cmn_err(CE_WARN, "rfs4_do_lock: unexpected errno (%d)", error); 8308 status = NFS4ERR_SERVERFAULT; 8309 break; 8310 } 8311 8312 return (status); 8313 } 8314 8315 /*ARGSUSED*/ 8316 void 8317 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8318 struct svc_req *req, struct compound_state *cs) 8319 { 8320 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8321 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8322 nfsstat4 status; 8323 stateid4 *stateid; 8324 rfs4_lockowner_t *lo; 8325 rfs4_client_t *cp; 8326 rfs4_state_t *sp = NULL; 8327 rfs4_lo_state_t *lsp = NULL; 8328 bool_t ls_sw_held = FALSE; 8329 bool_t create = TRUE; 8330 bool_t lcreate = TRUE; 8331 bool_t dup_lock = FALSE; 8332 int rc; 8333 8334 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8335 LOCK4args *, args); 8336 8337 if (cs->vp == NULL) { 8338 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8339 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8340 cs, LOCK4res *, resp); 8341 return; 8342 } 8343 8344 if (args->locker.new_lock_owner) { 8345 /* Create a new lockowner for this instance */ 8346 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8347 8348 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8349 8350 stateid = &olo->open_stateid; 8351 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8352 if (status != NFS4_OK) { 8353 NFS4_DEBUG(rfs4_debug, 8354 (CE_NOTE, "Get state failed in lock %d", status)); 8355 *cs->statusp = resp->status = status; 8356 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8357 cs, LOCK4res *, resp); 8358 return; 8359 } 8360 8361 /* Ensure specified filehandle matches */ 8362 if (cs->vp != sp->finfo->vp) { 8363 rfs4_state_rele(sp); 8364 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8365 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8366 cs, LOCK4res *, resp); 8367 return; 8368 } 8369 8370 /* hold off other access to open_owner while we tinker */ 8371 rfs4_sw_enter(&sp->owner->oo_sw); 8372 8373 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8374 case NFS4_CHECK_STATEID_OLD: 8375 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8376 goto end; 8377 case NFS4_CHECK_STATEID_BAD: 8378 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8379 goto end; 8380 case NFS4_CHECK_STATEID_EXPIRED: 8381 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8382 goto end; 8383 case NFS4_CHECK_STATEID_UNCONFIRMED: 8384 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8385 goto end; 8386 case NFS4_CHECK_STATEID_CLOSED: 8387 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8388 goto end; 8389 case NFS4_CHECK_STATEID_OKAY: 8390 case NFS4_CHECK_STATEID_REPLAY: 8391 switch (rfs4_check_olo_seqid(olo->open_seqid, 8392 sp->owner, resop)) { 8393 case NFS4_CHKSEQ_OKAY: 8394 if (rc == NFS4_CHECK_STATEID_OKAY) 8395 break; 8396 /* 8397 * This is replayed stateid; if seqid 8398 * matches next expected, then client 8399 * is using wrong seqid. 8400 */ 8401 /* FALLTHROUGH */ 8402 case NFS4_CHKSEQ_BAD: 8403 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8404 goto end; 8405 case NFS4_CHKSEQ_REPLAY: 8406 /* This is a duplicate LOCK request */ 8407 dup_lock = TRUE; 8408 8409 /* 8410 * For a duplicate we do not want to 8411 * create a new lockowner as it should 8412 * already exist. 8413 * Turn off the lockowner create flag. 8414 */ 8415 lcreate = FALSE; 8416 } 8417 break; 8418 } 8419 8420 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8421 if (lo == NULL) { 8422 NFS4_DEBUG(rfs4_debug, 8423 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8424 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8425 goto end; 8426 } 8427 8428 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8429 if (lsp == NULL) { 8430 rfs4_update_lease(sp->owner->client); 8431 /* 8432 * Only update theh open_seqid if this is not 8433 * a duplicate request 8434 */ 8435 if (dup_lock == FALSE) { 8436 rfs4_update_open_sequence(sp->owner); 8437 } 8438 8439 NFS4_DEBUG(rfs4_debug, 8440 (CE_NOTE, "rfs4_op_lock: no state")); 8441 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8442 rfs4_update_open_resp(sp->owner, resop, NULL); 8443 rfs4_lockowner_rele(lo); 8444 goto end; 8445 } 8446 8447 /* 8448 * This is the new_lock_owner branch and the client is 8449 * supposed to be associating a new lock_owner with 8450 * the open file at this point. If we find that a 8451 * lock_owner/state association already exists and a 8452 * successful LOCK request was returned to the client, 8453 * an error is returned to the client since this is 8454 * not appropriate. The client should be using the 8455 * existing lock_owner branch. 8456 */ 8457 if (dup_lock == FALSE && create == FALSE) { 8458 if (lsp->lock_completed == TRUE) { 8459 *cs->statusp = 8460 resp->status = NFS4ERR_BAD_SEQID; 8461 rfs4_lockowner_rele(lo); 8462 goto end; 8463 } 8464 } 8465 8466 rfs4_update_lease(sp->owner->client); 8467 8468 /* 8469 * Only update theh open_seqid if this is not 8470 * a duplicate request 8471 */ 8472 if (dup_lock == FALSE) { 8473 rfs4_update_open_sequence(sp->owner); 8474 } 8475 8476 /* 8477 * If this is a duplicate lock request, just copy the 8478 * previously saved reply and return. 8479 */ 8480 if (dup_lock == TRUE) { 8481 /* verify that lock_seqid's match */ 8482 if (lsp->seqid != olo->lock_seqid) { 8483 NFS4_DEBUG(rfs4_debug, 8484 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8485 "lsp->seqid=%d old->seqid=%d", 8486 lsp->seqid, olo->lock_seqid)); 8487 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8488 } else { 8489 rfs4_copy_reply(resop, lsp->reply); 8490 /* 8491 * Make sure to copy the just 8492 * retrieved reply status into the 8493 * overall compound status 8494 */ 8495 *cs->statusp = resp->status; 8496 } 8497 rfs4_lockowner_rele(lo); 8498 goto end; 8499 } 8500 8501 rfs4_dbe_lock(lsp->dbe); 8502 8503 /* Make sure to update the lock sequence id */ 8504 lsp->seqid = olo->lock_seqid; 8505 8506 NFS4_DEBUG(rfs4_debug, 8507 (CE_NOTE, "Lock seqid established as %d", lsp->seqid)); 8508 8509 /* 8510 * This is used to signify the newly created lockowner 8511 * stateid and its sequence number. The checks for 8512 * sequence number and increment don't occur on the 8513 * very first lock request for a lockowner. 8514 */ 8515 lsp->skip_seqid_check = TRUE; 8516 8517 /* hold off other access to lsp while we tinker */ 8518 rfs4_sw_enter(&lsp->ls_sw); 8519 ls_sw_held = TRUE; 8520 8521 rfs4_dbe_unlock(lsp->dbe); 8522 8523 rfs4_lockowner_rele(lo); 8524 } else { 8525 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8526 /* get lsp and hold the lock on the underlying file struct */ 8527 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8528 != NFS4_OK) { 8529 *cs->statusp = resp->status = status; 8530 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8531 cs, LOCK4res *, resp); 8532 return; 8533 } 8534 create = FALSE; /* We didn't create lsp */ 8535 8536 /* Ensure specified filehandle matches */ 8537 if (cs->vp != lsp->state->finfo->vp) { 8538 rfs4_lo_state_rele(lsp, TRUE); 8539 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8540 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8541 cs, LOCK4res *, resp); 8542 return; 8543 } 8544 8545 /* hold off other access to lsp while we tinker */ 8546 rfs4_sw_enter(&lsp->ls_sw); 8547 ls_sw_held = TRUE; 8548 8549 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8550 /* 8551 * The stateid looks like it was okay (expected to be 8552 * the next one) 8553 */ 8554 case NFS4_CHECK_STATEID_OKAY: 8555 /* 8556 * The sequence id is now checked. Determine 8557 * if this is a replay or if it is in the 8558 * expected (next) sequence. In the case of a 8559 * replay, there are two replay conditions 8560 * that may occur. The first is the normal 8561 * condition where a LOCK is done with a 8562 * NFS4_OK response and the stateid is 8563 * updated. That case is handled below when 8564 * the stateid is identified as a REPLAY. The 8565 * second is the case where an error is 8566 * returned, like NFS4ERR_DENIED, and the 8567 * sequence number is updated but the stateid 8568 * is not updated. This second case is dealt 8569 * with here. So it may seem odd that the 8570 * stateid is okay but the sequence id is a 8571 * replay but it is okay. 8572 */ 8573 switch (rfs4_check_lock_seqid( 8574 args->locker.locker4_u.lock_owner.lock_seqid, 8575 lsp, resop)) { 8576 case NFS4_CHKSEQ_REPLAY: 8577 if (resp->status != NFS4_OK) { 8578 /* 8579 * Here is our replay and need 8580 * to verify that the last 8581 * response was an error. 8582 */ 8583 *cs->statusp = resp->status; 8584 goto end; 8585 } 8586 /* 8587 * This is done since the sequence id 8588 * looked like a replay but it didn't 8589 * pass our check so a BAD_SEQID is 8590 * returned as a result. 8591 */ 8592 /*FALLTHROUGH*/ 8593 case NFS4_CHKSEQ_BAD: 8594 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8595 goto end; 8596 case NFS4_CHKSEQ_OKAY: 8597 /* Everything looks okay move ahead */ 8598 break; 8599 } 8600 break; 8601 case NFS4_CHECK_STATEID_OLD: 8602 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8603 goto end; 8604 case NFS4_CHECK_STATEID_BAD: 8605 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8606 goto end; 8607 case NFS4_CHECK_STATEID_EXPIRED: 8608 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8609 goto end; 8610 case NFS4_CHECK_STATEID_CLOSED: 8611 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8612 goto end; 8613 case NFS4_CHECK_STATEID_REPLAY: 8614 switch (rfs4_check_lock_seqid( 8615 args->locker.locker4_u.lock_owner.lock_seqid, 8616 lsp, resop)) { 8617 case NFS4_CHKSEQ_OKAY: 8618 /* 8619 * This is a replayed stateid; if 8620 * seqid matches the next expected, 8621 * then client is using wrong seqid. 8622 */ 8623 case NFS4_CHKSEQ_BAD: 8624 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8625 goto end; 8626 case NFS4_CHKSEQ_REPLAY: 8627 rfs4_update_lease(lsp->locker->client); 8628 *cs->statusp = status = resp->status; 8629 goto end; 8630 } 8631 break; 8632 default: 8633 ASSERT(FALSE); 8634 break; 8635 } 8636 8637 rfs4_update_lock_sequence(lsp); 8638 rfs4_update_lease(lsp->locker->client); 8639 } 8640 8641 /* 8642 * NFS4 only allows locking on regular files, so 8643 * verify type of object. 8644 */ 8645 if (cs->vp->v_type != VREG) { 8646 if (cs->vp->v_type == VDIR) 8647 status = NFS4ERR_ISDIR; 8648 else 8649 status = NFS4ERR_INVAL; 8650 goto out; 8651 } 8652 8653 cp = lsp->state->owner->client; 8654 8655 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 8656 status = NFS4ERR_GRACE; 8657 goto out; 8658 } 8659 8660 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->can_reclaim) { 8661 status = NFS4ERR_NO_GRACE; 8662 goto out; 8663 } 8664 8665 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 8666 status = NFS4ERR_NO_GRACE; 8667 goto out; 8668 } 8669 8670 if (lsp->state->finfo->dinfo->dtype == OPEN_DELEGATE_WRITE) 8671 cs->deleg = TRUE; 8672 8673 status = rfs4_do_lock(lsp, args->locktype, 8674 args->locker.locker4_u.lock_owner.lock_seqid, 8675 args->offset, args->length, cs->cr, resop); 8676 8677 out: 8678 lsp->skip_seqid_check = FALSE; 8679 8680 *cs->statusp = resp->status = status; 8681 8682 if (status == NFS4_OK) { 8683 resp->LOCK4res_u.lock_stateid = lsp->lockid.stateid; 8684 lsp->lock_completed = TRUE; 8685 } 8686 /* 8687 * Only update the "OPEN" response here if this was a new 8688 * lock_owner 8689 */ 8690 if (sp) 8691 rfs4_update_open_resp(sp->owner, resop, NULL); 8692 8693 rfs4_update_lock_resp(lsp, resop); 8694 8695 end: 8696 if (lsp) { 8697 if (ls_sw_held) 8698 rfs4_sw_exit(&lsp->ls_sw); 8699 /* 8700 * If an sp obtained, then the lsp does not represent 8701 * a lock on the file struct. 8702 */ 8703 if (sp != NULL) 8704 rfs4_lo_state_rele(lsp, FALSE); 8705 else 8706 rfs4_lo_state_rele(lsp, TRUE); 8707 } 8708 if (sp) { 8709 rfs4_sw_exit(&sp->owner->oo_sw); 8710 rfs4_state_rele(sp); 8711 } 8712 8713 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 8714 LOCK4res *, resp); 8715 } 8716 8717 /* free function for LOCK/LOCKT */ 8718 static void 8719 lock_denied_free(nfs_resop4 *resop) 8720 { 8721 LOCK4denied *dp = NULL; 8722 8723 switch (resop->resop) { 8724 case OP_LOCK: 8725 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 8726 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 8727 break; 8728 case OP_LOCKT: 8729 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 8730 dp = &resop->nfs_resop4_u.oplockt.denied; 8731 break; 8732 default: 8733 break; 8734 } 8735 8736 if (dp) 8737 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 8738 } 8739 8740 /*ARGSUSED*/ 8741 void 8742 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 8743 struct svc_req *req, struct compound_state *cs) 8744 { 8745 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 8746 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 8747 nfsstat4 status; 8748 stateid4 *stateid = &args->lock_stateid; 8749 rfs4_lo_state_t *lsp; 8750 8751 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 8752 LOCKU4args *, args); 8753 8754 if (cs->vp == NULL) { 8755 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8756 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8757 LOCKU4res *, resp); 8758 return; 8759 } 8760 8761 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 8762 *cs->statusp = resp->status = status; 8763 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8764 LOCKU4res *, resp); 8765 return; 8766 } 8767 8768 /* Ensure specified filehandle matches */ 8769 if (cs->vp != lsp->state->finfo->vp) { 8770 rfs4_lo_state_rele(lsp, TRUE); 8771 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8772 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8773 LOCKU4res *, resp); 8774 return; 8775 } 8776 8777 /* hold off other access to lsp while we tinker */ 8778 rfs4_sw_enter(&lsp->ls_sw); 8779 8780 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8781 case NFS4_CHECK_STATEID_OKAY: 8782 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 8783 != NFS4_CHKSEQ_OKAY) { 8784 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8785 goto end; 8786 } 8787 break; 8788 case NFS4_CHECK_STATEID_OLD: 8789 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8790 goto end; 8791 case NFS4_CHECK_STATEID_BAD: 8792 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8793 goto end; 8794 case NFS4_CHECK_STATEID_EXPIRED: 8795 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8796 goto end; 8797 case NFS4_CHECK_STATEID_CLOSED: 8798 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8799 goto end; 8800 case NFS4_CHECK_STATEID_REPLAY: 8801 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 8802 case NFS4_CHKSEQ_OKAY: 8803 /* 8804 * This is a replayed stateid; if 8805 * seqid matches the next expected, 8806 * then client is using wrong seqid. 8807 */ 8808 case NFS4_CHKSEQ_BAD: 8809 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8810 goto end; 8811 case NFS4_CHKSEQ_REPLAY: 8812 rfs4_update_lease(lsp->locker->client); 8813 *cs->statusp = status = resp->status; 8814 goto end; 8815 } 8816 break; 8817 default: 8818 ASSERT(FALSE); 8819 break; 8820 } 8821 8822 rfs4_update_lock_sequence(lsp); 8823 rfs4_update_lease(lsp->locker->client); 8824 8825 /* 8826 * NFS4 only allows locking on regular files, so 8827 * verify type of object. 8828 */ 8829 if (cs->vp->v_type != VREG) { 8830 if (cs->vp->v_type == VDIR) 8831 status = NFS4ERR_ISDIR; 8832 else 8833 status = NFS4ERR_INVAL; 8834 goto out; 8835 } 8836 8837 if (rfs4_clnt_in_grace(lsp->state->owner->client)) { 8838 status = NFS4ERR_GRACE; 8839 goto out; 8840 } 8841 8842 status = rfs4_do_lock(lsp, args->locktype, 8843 args->seqid, args->offset, args->length, cs->cr, resop); 8844 8845 out: 8846 *cs->statusp = resp->status = status; 8847 8848 if (status == NFS4_OK) 8849 resp->lock_stateid = lsp->lockid.stateid; 8850 8851 rfs4_update_lock_resp(lsp, resop); 8852 8853 end: 8854 rfs4_sw_exit(&lsp->ls_sw); 8855 rfs4_lo_state_rele(lsp, TRUE); 8856 8857 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8858 LOCKU4res *, resp); 8859 } 8860 8861 /* 8862 * LOCKT is a best effort routine, the client can not be guaranteed that 8863 * the status return is still in effect by the time the reply is received. 8864 * They are numerous race conditions in this routine, but we are not required 8865 * and can not be accurate. 8866 */ 8867 /*ARGSUSED*/ 8868 void 8869 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 8870 struct svc_req *req, struct compound_state *cs) 8871 { 8872 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 8873 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 8874 rfs4_lockowner_t *lo; 8875 rfs4_client_t *cp; 8876 bool_t create = FALSE; 8877 struct flock64 flk; 8878 int error; 8879 int flag = FREAD | FWRITE; 8880 int ltype; 8881 length4 posix_length; 8882 sysid_t sysid; 8883 pid_t pid; 8884 8885 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 8886 LOCKT4args *, args); 8887 8888 if (cs->vp == NULL) { 8889 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8890 goto out; 8891 } 8892 8893 /* 8894 * NFS4 only allows locking on regular files, so 8895 * verify type of object. 8896 */ 8897 if (cs->vp->v_type != VREG) { 8898 if (cs->vp->v_type == VDIR) 8899 *cs->statusp = resp->status = NFS4ERR_ISDIR; 8900 else 8901 *cs->statusp = resp->status = NFS4ERR_INVAL; 8902 goto out; 8903 } 8904 8905 /* 8906 * Check out the clientid to ensure the server knows about it 8907 * so that we correctly inform the client of a server reboot. 8908 */ 8909 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 8910 == NULL) { 8911 *cs->statusp = resp->status = 8912 rfs4_check_clientid(&args->owner.clientid, 0); 8913 goto out; 8914 } 8915 if (rfs4_lease_expired(cp)) { 8916 rfs4_client_close(cp); 8917 /* 8918 * Protocol doesn't allow returning NFS4ERR_STALE as 8919 * other operations do on this check so STALE_CLIENTID 8920 * is returned instead 8921 */ 8922 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 8923 goto out; 8924 } 8925 8926 if (rfs4_clnt_in_grace(cp) && !(cp->can_reclaim)) { 8927 *cs->statusp = resp->status = NFS4ERR_GRACE; 8928 rfs4_client_rele(cp); 8929 goto out; 8930 } 8931 rfs4_client_rele(cp); 8932 8933 resp->status = NFS4_OK; 8934 8935 switch (args->locktype) { 8936 case READ_LT: 8937 case READW_LT: 8938 ltype = F_RDLCK; 8939 break; 8940 case WRITE_LT: 8941 case WRITEW_LT: 8942 ltype = F_WRLCK; 8943 break; 8944 } 8945 8946 posix_length = args->length; 8947 /* Check for zero length. To lock to end of file use all ones for V4 */ 8948 if (posix_length == 0) { 8949 *cs->statusp = resp->status = NFS4ERR_INVAL; 8950 goto out; 8951 } else if (posix_length == (length4)(~0)) { 8952 posix_length = 0; /* Posix to end of file */ 8953 } 8954 8955 /* Find or create a lockowner */ 8956 lo = rfs4_findlockowner(&args->owner, &create); 8957 8958 if (lo) { 8959 pid = lo->pid; 8960 if ((resp->status = 8961 rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 8962 goto err; 8963 } else { 8964 pid = 0; 8965 sysid = lockt_sysid; 8966 } 8967 retry: 8968 flk.l_type = ltype; 8969 flk.l_whence = 0; /* SEEK_SET */ 8970 flk.l_start = args->offset; 8971 flk.l_len = posix_length; 8972 flk.l_sysid = sysid; 8973 flk.l_pid = pid; 8974 flag |= F_REMOTELOCK; 8975 8976 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 8977 8978 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8979 if (flk.l_len < 0 || flk.l_start < 0) { 8980 resp->status = NFS4ERR_INVAL; 8981 goto err; 8982 } 8983 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 8984 NULL, cs->cr, NULL); 8985 8986 /* 8987 * N.B. We map error values to nfsv4 errors. This is differrent 8988 * than puterrno4 routine. 8989 */ 8990 switch (error) { 8991 case 0: 8992 if (flk.l_type == F_UNLCK) 8993 resp->status = NFS4_OK; 8994 else { 8995 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 8996 goto retry; 8997 resp->status = NFS4ERR_DENIED; 8998 } 8999 break; 9000 case EOVERFLOW: 9001 resp->status = NFS4ERR_INVAL; 9002 break; 9003 case EINVAL: 9004 resp->status = NFS4ERR_NOTSUPP; 9005 break; 9006 default: 9007 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9008 error); 9009 resp->status = NFS4ERR_SERVERFAULT; 9010 break; 9011 } 9012 9013 err: 9014 if (lo) 9015 rfs4_lockowner_rele(lo); 9016 *cs->statusp = resp->status; 9017 out: 9018 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9019 LOCKT4res *, resp); 9020 } 9021 9022 static int 9023 vop_shrlock(vnode_t *vp, int cmd, struct shrlock *sp, int fflags) 9024 { 9025 int err; 9026 9027 if (cmd == F_UNSHARE && sp->s_deny == 0 && sp->s_access == 0) 9028 return (0); 9029 9030 err = VOP_SHRLOCK(vp, cmd, sp, fflags, CRED(), NULL); 9031 9032 NFS4_DEBUG(rfs4_shrlock_debug, 9033 (CE_NOTE, "rfs4_shrlock %s vp=%p acc=%d dny=%d sysid=%d " 9034 "pid=%d err=%d\n", cmd == F_UNSHARE ? "UNSHR" : "SHARE", 9035 (void *) vp, sp->s_access, sp->s_deny, sp->s_sysid, sp->s_pid, 9036 err)); 9037 9038 return (err); 9039 } 9040 9041 static int 9042 rfs4_shrlock(rfs4_state_t *sp, int cmd) 9043 { 9044 struct shrlock shr; 9045 struct shr_locowner shr_loco; 9046 int fflags; 9047 9048 fflags = shr.s_access = shr.s_deny = 0; 9049 9050 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 9051 fflags |= FREAD; 9052 shr.s_access |= F_RDACC; 9053 } 9054 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 9055 fflags |= FWRITE; 9056 shr.s_access |= F_WRACC; 9057 } 9058 if (sp->share_deny & OPEN4_SHARE_DENY_READ) 9059 shr.s_deny |= F_RDDNY; 9060 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) 9061 shr.s_deny |= F_WRDNY; 9062 9063 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 9064 shr.s_sysid = sp->owner->client->sysidt; 9065 shr_loco.sl_pid = shr.s_pid; 9066 shr_loco.sl_id = shr.s_sysid; 9067 shr.s_owner = (caddr_t)&shr_loco; 9068 shr.s_own_len = sizeof (shr_loco); 9069 return (vop_shrlock(sp->finfo->vp, cmd, &shr, fflags)); 9070 } 9071 9072 static int 9073 rfs4_share(rfs4_state_t *sp) 9074 { 9075 int cmd; 9076 cmd = nbl_need_check(sp->finfo->vp) ? F_SHARE_NBMAND : F_SHARE; 9077 return (rfs4_shrlock(sp, cmd)); 9078 } 9079 9080 void 9081 rfs4_unshare(rfs4_state_t *sp) 9082 { 9083 (void) rfs4_shrlock(sp, F_UNSHARE); 9084 } 9085