1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 28 * All Rights Reserved 29 */ 30 31 #pragma ident "%Z%%M% %I% %E% SMI" 32 33 #include <sys/param.h> 34 #include <sys/types.h> 35 #include <sys/systm.h> 36 #include <sys/cred.h> 37 #include <sys/buf.h> 38 #include <sys/vfs.h> 39 #include <sys/vfs_opreg.h> 40 #include <sys/vnode.h> 41 #include <sys/uio.h> 42 #include <sys/errno.h> 43 #include <sys/sysmacros.h> 44 #include <sys/statvfs.h> 45 #include <sys/kmem.h> 46 #include <sys/dirent.h> 47 #include <sys/cmn_err.h> 48 #include <sys/debug.h> 49 #include <sys/systeminfo.h> 50 #include <sys/flock.h> 51 #include <sys/pathname.h> 52 #include <sys/nbmlock.h> 53 #include <sys/share.h> 54 #include <sys/atomic.h> 55 #include <sys/policy.h> 56 #include <sys/fem.h> 57 #include <sys/sdt.h> 58 #include <sys/ddi.h> 59 60 #include <rpc/types.h> 61 #include <rpc/auth.h> 62 #include <rpc/rpcsec_gss.h> 63 #include <rpc/svc.h> 64 65 #include <nfs/nfs.h> 66 #include <nfs/export.h> 67 #include <nfs/lm.h> 68 #include <nfs/nfs4.h> 69 70 #include <sys/strsubr.h> 71 #include <sys/strsun.h> 72 73 #include <inet/common.h> 74 #include <inet/ip.h> 75 #include <inet/ip6.h> 76 77 #include <sys/tsol/label.h> 78 #include <sys/tsol/tndb.h> 79 80 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 81 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 82 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 83 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 84 85 /* End of Tunables */ 86 87 /* 88 * Used to bump the stateid4.seqid value and show changes in the stateid 89 */ 90 #define next_stateid(sp) (++(sp)->bits.chgseq) 91 92 /* 93 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 94 * This is used to return NFS4ERR_TOOSMALL when clients specify 95 * maxcount that isn't large enough to hold the smallest possible 96 * XDR encoded dirent. 97 * 98 * sizeof cookie (8 bytes) + 99 * sizeof name_len (4 bytes) + 100 * sizeof smallest (padded) name (4 bytes) + 101 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 102 * sizeof attrlist4_len (4 bytes) + 103 * sizeof next boolean (4 bytes) 104 * 105 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 106 * the smallest possible entry4 (assumes no attrs requested). 107 * sizeof nfsstat4 (4 bytes) + 108 * sizeof verifier4 (8 bytes) + 109 * sizeof entry4list bool (4 bytes) + 110 * sizeof entry4 (36 bytes) + 111 * sizeof eof bool (4 bytes) 112 * 113 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 114 * VOP_READDIR. Its value is the size of the maximum possible dirent 115 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 116 * required for a given name length. MAXNAMELEN is the maximum 117 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 118 * macros are to allow for . and .. entries -- just a minor tweak to try 119 * and guarantee that buffer we give to VOP_READDIR will be large enough 120 * to hold ., .., and the largest possible solaris dirent64. 121 */ 122 #define RFS4_MINLEN_ENTRY4 36 123 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 124 #define RFS4_MINLEN_RDDIR_BUF \ 125 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 126 127 /* 128 * It would be better to pad to 4 bytes since that's what XDR would do, 129 * but the dirents UFS gives us are already padded to 8, so just take 130 * what we're given. Dircount is only a hint anyway. Currently the 131 * solaris kernel is ASCII only, so there's no point in calling the 132 * UTF8 functions. 133 * 134 * dirent64: named padded to provide 8 byte struct alignment 135 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 136 * 137 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 138 * 139 */ 140 #define DIRENT64_TO_DIRCOUNT(dp) \ 141 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 142 143 /* 144 * types of label comparison 145 */ 146 #define EQUALITY_CHECK 0 147 #define DOMINANCE_CHECK 1 148 149 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 150 151 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 152 153 u_longlong_t nfs4_srv_caller_id; 154 155 verifier4 Write4verf; 156 verifier4 Readdir4verf; 157 158 void rfs4_init_compound_state(struct compound_state *); 159 160 static void nullfree(caddr_t); 161 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 162 struct compound_state *); 163 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 164 struct compound_state *); 165 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 166 struct compound_state *); 167 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 168 struct compound_state *); 169 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 170 struct compound_state *); 171 static void rfs4_op_create_free(nfs_resop4 *resop); 172 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 173 struct svc_req *, struct compound_state *); 174 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 175 struct compound_state *); 176 static void rfs4_op_getattr_free(nfs_resop4 *); 177 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 178 struct compound_state *); 179 static void rfs4_op_getfh_free(nfs_resop4 *); 180 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 181 struct compound_state *); 182 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 183 struct compound_state *); 184 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 185 struct compound_state *); 186 static void lock_denied_free(nfs_resop4 *); 187 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 188 struct compound_state *); 189 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 190 struct compound_state *); 191 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 192 struct compound_state *); 193 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 194 struct compound_state *); 195 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 196 struct svc_req *req, struct compound_state *cs); 197 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 198 struct compound_state *); 199 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 200 struct compound_state *); 201 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 202 struct svc_req *, struct compound_state *); 203 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 204 struct svc_req *, struct compound_state *); 205 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 206 struct compound_state *); 207 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 208 struct compound_state *); 209 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 210 struct compound_state *); 211 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 212 struct compound_state *); 213 static void rfs4_op_read_free(nfs_resop4 *); 214 static void rfs4_op_readdir_free(nfs_resop4 *resop); 215 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 216 struct compound_state *); 217 static void rfs4_op_readlink_free(nfs_resop4 *); 218 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 219 struct svc_req *, struct compound_state *); 220 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 221 struct compound_state *); 222 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 223 struct compound_state *); 224 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 225 struct compound_state *); 226 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 227 struct compound_state *); 228 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 229 struct compound_state *); 230 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 231 struct compound_state *); 232 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 233 struct compound_state *); 234 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 235 struct compound_state *); 236 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 237 struct svc_req *, struct compound_state *); 238 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 239 struct svc_req *req, struct compound_state *); 240 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 241 struct compound_state *); 242 static void rfs4_op_secinfo_free(nfs_resop4 *); 243 244 static nfsstat4 check_open_access(uint32_t, 245 struct compound_state *, struct svc_req *); 246 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 247 static int vop_shrlock(vnode_t *, int, struct shrlock *, int); 248 static int rfs4_shrlock(rfs4_state_t *, int); 249 static int rfs4_share(rfs4_state_t *); 250 void rfs4_ss_clid(rfs4_client_t *, struct svc_req *); 251 252 /* 253 * translation table for attrs 254 */ 255 struct nfs4_ntov_table { 256 union nfs4_attr_u *na; 257 uint8_t amap[NFS4_MAXNUM_ATTRS]; 258 int attrcnt; 259 bool_t vfsstat; 260 }; 261 262 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 263 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 264 struct nfs4_svgetit_arg *sargp); 265 266 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 267 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 268 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 269 270 fem_t *deleg_rdops; 271 fem_t *deleg_wrops; 272 273 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 274 kmutex_t rfs4_servinst_lock; /* protects linked list */ 275 int rfs4_seen_first_compound; /* set first time we see one */ 276 277 /* 278 * NFS4 op dispatch table 279 */ 280 281 struct rfsv4disp { 282 void (*dis_proc)(); /* proc to call */ 283 void (*dis_resfree)(); /* frees space allocated by proc */ 284 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 285 }; 286 287 static struct rfsv4disp rfsv4disptab[] = { 288 /* 289 * NFS VERSION 4 290 */ 291 292 /* RFS_NULL = 0 */ 293 {rfs4_op_illegal, nullfree, 0}, 294 295 /* UNUSED = 1 */ 296 {rfs4_op_illegal, nullfree, 0}, 297 298 /* UNUSED = 2 */ 299 {rfs4_op_illegal, nullfree, 0}, 300 301 /* OP_ACCESS = 3 */ 302 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 303 304 /* OP_CLOSE = 4 */ 305 {rfs4_op_close, nullfree, 0}, 306 307 /* OP_COMMIT = 5 */ 308 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 309 310 /* OP_CREATE = 6 */ 311 {rfs4_op_create, nullfree, 0}, 312 313 /* OP_DELEGPURGE = 7 */ 314 {rfs4_op_inval, nullfree, 0}, 315 316 /* OP_DELEGRETURN = 8 */ 317 {rfs4_op_delegreturn, nullfree, 0}, 318 319 /* OP_GETATTR = 9 */ 320 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 321 322 /* OP_GETFH = 10 */ 323 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 324 325 /* OP_LINK = 11 */ 326 {rfs4_op_link, nullfree, 0}, 327 328 /* OP_LOCK = 12 */ 329 {rfs4_op_lock, lock_denied_free, 0}, 330 331 /* OP_LOCKT = 13 */ 332 {rfs4_op_lockt, lock_denied_free, 0}, 333 334 /* OP_LOCKU = 14 */ 335 {rfs4_op_locku, nullfree, 0}, 336 337 /* OP_LOOKUP = 15 */ 338 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT|RPC_PUBLICFH_OK)}, 339 340 /* OP_LOOKUPP = 16 */ 341 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT|RPC_PUBLICFH_OK)}, 342 343 /* OP_NVERIFY = 17 */ 344 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 345 346 /* OP_OPEN = 18 */ 347 {rfs4_op_open, rfs4_free_reply, 0}, 348 349 /* OP_OPENATTR = 19 */ 350 {rfs4_op_openattr, nullfree, 0}, 351 352 /* OP_OPEN_CONFIRM = 20 */ 353 {rfs4_op_open_confirm, nullfree, 0}, 354 355 /* OP_OPEN_DOWNGRADE = 21 */ 356 {rfs4_op_open_downgrade, nullfree, 0}, 357 358 /* OP_OPEN_PUTFH = 22 */ 359 {rfs4_op_putfh, nullfree, RPC_ALL}, 360 361 /* OP_PUTPUBFH = 23 */ 362 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 363 364 /* OP_PUTROOTFH = 24 */ 365 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 366 367 /* OP_READ = 25 */ 368 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 369 370 /* OP_READDIR = 26 */ 371 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 372 373 /* OP_READLINK = 27 */ 374 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 375 376 /* OP_REMOVE = 28 */ 377 {rfs4_op_remove, nullfree, 0}, 378 379 /* OP_RENAME = 29 */ 380 {rfs4_op_rename, nullfree, 0}, 381 382 /* OP_RENEW = 30 */ 383 {rfs4_op_renew, nullfree, 0}, 384 385 /* OP_RESTOREFH = 31 */ 386 {rfs4_op_restorefh, nullfree, RPC_ALL}, 387 388 /* OP_SAVEFH = 32 */ 389 {rfs4_op_savefh, nullfree, RPC_ALL}, 390 391 /* OP_SECINFO = 33 */ 392 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 393 394 /* OP_SETATTR = 34 */ 395 {rfs4_op_setattr, nullfree, 0}, 396 397 /* OP_SETCLIENTID = 35 */ 398 {rfs4_op_setclientid, nullfree, 0}, 399 400 /* OP_SETCLIENTID_CONFIRM = 36 */ 401 {rfs4_op_setclientid_confirm, nullfree, 0}, 402 403 /* OP_VERIFY = 37 */ 404 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 405 406 /* OP_WRITE = 38 */ 407 {rfs4_op_write, nullfree, 0}, 408 409 /* OP_RELEASE_LOCKOWNER = 39 */ 410 {rfs4_op_release_lockowner, nullfree, 0}, 411 }; 412 413 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 414 415 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 416 417 #ifdef DEBUG 418 419 int rfs4_fillone_debug = 0; 420 int rfs4_shrlock_debug = 0; 421 int rfs4_no_stub_access = 1; 422 int rfs4_rddir_debug = 0; 423 424 static char *rfs4_op_string[] = { 425 "rfs4_op_null", 426 "rfs4_op_1 unused", 427 "rfs4_op_2 unused", 428 "rfs4_op_access", 429 "rfs4_op_close", 430 "rfs4_op_commit", 431 "rfs4_op_create", 432 "rfs4_op_delegpurge", 433 "rfs4_op_delegreturn", 434 "rfs4_op_getattr", 435 "rfs4_op_getfh", 436 "rfs4_op_link", 437 "rfs4_op_lock", 438 "rfs4_op_lockt", 439 "rfs4_op_locku", 440 "rfs4_op_lookup", 441 "rfs4_op_lookupp", 442 "rfs4_op_nverify", 443 "rfs4_op_open", 444 "rfs4_op_openattr", 445 "rfs4_op_open_confirm", 446 "rfs4_op_open_downgrade", 447 "rfs4_op_putfh", 448 "rfs4_op_putpubfh", 449 "rfs4_op_putrootfh", 450 "rfs4_op_read", 451 "rfs4_op_readdir", 452 "rfs4_op_readlink", 453 "rfs4_op_remove", 454 "rfs4_op_rename", 455 "rfs4_op_renew", 456 "rfs4_op_restorefh", 457 "rfs4_op_savefh", 458 "rfs4_op_secinfo", 459 "rfs4_op_setattr", 460 "rfs4_op_setclientid", 461 "rfs4_op_setclient_confirm", 462 "rfs4_op_verify", 463 "rfs4_op_write", 464 "rfs4_op_release_lockowner", 465 "rfs4_op_illegal" 466 }; 467 #endif 468 469 void rfs4_ss_chkclid(rfs4_client_t *); 470 471 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 472 473 #ifdef nextdp 474 #undef nextdp 475 #endif 476 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 477 478 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 479 VOPNAME_OPEN, { .femop_open = deleg_rdopen }, 480 VOPNAME_WRITE, { .femop_write = deleg_write }, 481 VOPNAME_SETATTR, { .femop_setattr = deleg_setattr }, 482 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 483 VOPNAME_SPACE, { .femop_space = deleg_space }, 484 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_setsecattr }, 485 VOPNAME_VNEVENT, { .femop_vnevent = deleg_vnevent }, 486 NULL, NULL 487 }; 488 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 489 VOPNAME_OPEN, { .femop_open = deleg_wropen }, 490 VOPNAME_READ, { .femop_read = deleg_read }, 491 VOPNAME_WRITE, { .femop_write = deleg_write }, 492 VOPNAME_SETATTR, { .femop_setattr = deleg_setattr }, 493 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 494 VOPNAME_SPACE, { .femop_space = deleg_space }, 495 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_setsecattr }, 496 VOPNAME_VNEVENT, { .femop_vnevent = deleg_vnevent }, 497 NULL, NULL 498 }; 499 500 int 501 rfs4_srvrinit(void) 502 { 503 timespec32_t verf; 504 int error; 505 extern void rfs4_attr_init(); 506 extern krwlock_t rfs4_deleg_policy_lock; 507 508 /* 509 * The following algorithm attempts to find a unique verifier 510 * to be used as the write verifier returned from the server 511 * to the client. It is important that this verifier change 512 * whenever the server reboots. Of secondary importance, it 513 * is important for the verifier to be unique between two 514 * different servers. 515 * 516 * Thus, an attempt is made to use the system hostid and the 517 * current time in seconds when the nfssrv kernel module is 518 * loaded. It is assumed that an NFS server will not be able 519 * to boot and then to reboot in less than a second. If the 520 * hostid has not been set, then the current high resolution 521 * time is used. This will ensure different verifiers each 522 * time the server reboots and minimize the chances that two 523 * different servers will have the same verifier. 524 * XXX - this is broken on LP64 kernels. 525 */ 526 verf.tv_sec = (time_t)nfs_atoi(hw_serial); 527 if (verf.tv_sec != 0) { 528 verf.tv_nsec = gethrestime_sec(); 529 } else { 530 timespec_t tverf; 531 532 gethrestime(&tverf); 533 verf.tv_sec = (time_t)tverf.tv_sec; 534 verf.tv_nsec = tverf.tv_nsec; 535 } 536 537 Write4verf = *(uint64_t *)&verf; 538 539 rfs4_attr_init(); 540 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 541 542 /* Used to manage create/destroy of server state */ 543 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 544 545 /* Used to manage access to server instance linked list */ 546 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 547 548 /* Used to manage access to rfs4_deleg_policy */ 549 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 550 551 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 552 if (error != 0) { 553 rfs4_disable_delegation(); 554 } else { 555 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 556 &deleg_wrops); 557 if (error != 0) { 558 rfs4_disable_delegation(); 559 fem_free(deleg_rdops); 560 } 561 } 562 563 nfs4_srv_caller_id = fs_new_caller_id(); 564 565 lockt_sysid = lm_alloc_sysidt(); 566 567 return (0); 568 } 569 570 void 571 rfs4_srvrfini(void) 572 { 573 extern krwlock_t rfs4_deleg_policy_lock; 574 575 if (lockt_sysid != LM_NOSYSID) { 576 lm_free_sysidt(lockt_sysid); 577 lockt_sysid = LM_NOSYSID; 578 } 579 580 mutex_destroy(&rfs4_deleg_lock); 581 mutex_destroy(&rfs4_state_lock); 582 rw_destroy(&rfs4_deleg_policy_lock); 583 584 fem_free(deleg_rdops); 585 fem_free(deleg_wrops); 586 } 587 588 void 589 rfs4_init_compound_state(struct compound_state *cs) 590 { 591 bzero(cs, sizeof (*cs)); 592 cs->cont = TRUE; 593 cs->access = CS_ACCESS_DENIED; 594 cs->deleg = FALSE; 595 cs->mandlock = FALSE; 596 cs->fh.nfs_fh4_val = cs->fhbuf; 597 } 598 599 void 600 rfs4_grace_start(rfs4_servinst_t *sip) 601 { 602 time_t now = gethrestime_sec(); 603 604 rw_enter(&sip->rwlock, RW_WRITER); 605 sip->start_time = now; 606 sip->grace_period = rfs4_grace_period; 607 rw_exit(&sip->rwlock); 608 } 609 610 /* 611 * returns true if the instance's grace period has never been started 612 */ 613 int 614 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 615 { 616 time_t start_time; 617 618 rw_enter(&sip->rwlock, RW_READER); 619 start_time = sip->start_time; 620 rw_exit(&sip->rwlock); 621 622 return (start_time == 0); 623 } 624 625 /* 626 * Indicates if server instance is within the 627 * grace period. 628 */ 629 int 630 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 631 { 632 time_t grace_expiry; 633 634 rw_enter(&sip->rwlock, RW_READER); 635 grace_expiry = sip->start_time + sip->grace_period; 636 rw_exit(&sip->rwlock); 637 638 return (gethrestime_sec() < grace_expiry); 639 } 640 641 int 642 rfs4_clnt_in_grace(rfs4_client_t *cp) 643 { 644 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 645 646 return (rfs4_servinst_in_grace(cp->server_instance)); 647 } 648 649 /* 650 * reset all currently active grace periods 651 */ 652 void 653 rfs4_grace_reset_all(void) 654 { 655 rfs4_servinst_t *sip; 656 657 mutex_enter(&rfs4_servinst_lock); 658 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 659 if (rfs4_servinst_in_grace(sip)) 660 rfs4_grace_start(sip); 661 mutex_exit(&rfs4_servinst_lock); 662 } 663 664 /* 665 * start any new instances' grace periods 666 */ 667 void 668 rfs4_grace_start_new(void) 669 { 670 rfs4_servinst_t *sip; 671 672 mutex_enter(&rfs4_servinst_lock); 673 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 674 if (rfs4_servinst_grace_new(sip)) 675 rfs4_grace_start(sip); 676 mutex_exit(&rfs4_servinst_lock); 677 } 678 679 static rfs4_dss_path_t * 680 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 681 { 682 size_t len; 683 rfs4_dss_path_t *dss_path; 684 685 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 686 687 /* 688 * Take a copy of the string, since the original may be overwritten. 689 * Sadly, no strdup() in the kernel. 690 */ 691 /* allow for NUL */ 692 len = strlen(path) + 1; 693 dss_path->path = kmem_alloc(len, KM_SLEEP); 694 (void) strlcpy(dss_path->path, path, len); 695 696 /* associate with servinst */ 697 dss_path->sip = sip; 698 dss_path->index = index; 699 700 /* 701 * Add to list of served paths. 702 * No locking required, as we're only ever called at startup. 703 */ 704 if (rfs4_dss_pathlist == NULL) { 705 /* this is the first dss_path_t */ 706 707 /* needed for insque/remque */ 708 dss_path->next = dss_path->prev = dss_path; 709 710 rfs4_dss_pathlist = dss_path; 711 } else { 712 insque(dss_path, rfs4_dss_pathlist); 713 } 714 715 return (dss_path); 716 } 717 718 /* 719 * Create a new server instance, and make it the currently active instance. 720 * Note that starting the grace period too early will reduce the clients' 721 * recovery window. 722 */ 723 void 724 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 725 { 726 unsigned i; 727 rfs4_servinst_t *sip; 728 rfs4_oldstate_t *oldstate; 729 730 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 731 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 732 733 sip->start_time = (time_t)0; 734 sip->grace_period = (time_t)0; 735 sip->next = NULL; 736 sip->prev = NULL; 737 738 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 739 /* 740 * This initial dummy entry is required to setup for insque/remque. 741 * It must be skipped over whenever the list is traversed. 742 */ 743 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 744 /* insque/remque require initial list entry to be self-terminated */ 745 oldstate->next = oldstate; 746 oldstate->prev = oldstate; 747 sip->oldstate = oldstate; 748 749 750 sip->dss_npaths = dss_npaths; 751 sip->dss_paths = kmem_alloc(dss_npaths * 752 sizeof (rfs4_dss_path_t *), KM_SLEEP); 753 754 for (i = 0; i < dss_npaths; i++) { 755 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 756 } 757 758 mutex_enter(&rfs4_servinst_lock); 759 if (rfs4_cur_servinst != NULL) { 760 /* add to linked list */ 761 sip->prev = rfs4_cur_servinst; 762 rfs4_cur_servinst->next = sip; 763 } 764 if (start_grace) 765 rfs4_grace_start(sip); 766 /* make the new instance "current" */ 767 rfs4_cur_servinst = sip; 768 769 mutex_exit(&rfs4_servinst_lock); 770 } 771 772 /* 773 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 774 * all instances directly. 775 */ 776 void 777 rfs4_servinst_destroy_all(void) 778 { 779 rfs4_servinst_t *sip, *prev, *current; 780 #ifdef DEBUG 781 int n = 0; 782 #endif 783 784 mutex_enter(&rfs4_servinst_lock); 785 ASSERT(rfs4_cur_servinst != NULL); 786 current = rfs4_cur_servinst; 787 rfs4_cur_servinst = NULL; 788 for (sip = current; sip != NULL; sip = prev) { 789 prev = sip->prev; 790 rw_destroy(&sip->rwlock); 791 if (sip->oldstate) 792 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 793 if (sip->dss_paths) 794 kmem_free(sip->dss_paths, 795 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 796 kmem_free(sip, sizeof (rfs4_servinst_t)); 797 #ifdef DEBUG 798 n++; 799 #endif 800 } 801 mutex_exit(&rfs4_servinst_lock); 802 } 803 804 /* 805 * Assign the current server instance to a client_t. 806 * Should be called with cp->dbe held. 807 */ 808 void 809 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 810 { 811 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 812 813 /* 814 * The lock ensures that if the current instance is in the process 815 * of changing, we will see the new one. 816 */ 817 mutex_enter(&rfs4_servinst_lock); 818 cp->server_instance = sip; 819 mutex_exit(&rfs4_servinst_lock); 820 } 821 822 rfs4_servinst_t * 823 rfs4_servinst(rfs4_client_t *cp) 824 { 825 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 826 827 return (cp->server_instance); 828 } 829 830 /* ARGSUSED */ 831 static void 832 nullfree(caddr_t resop) 833 { 834 } 835 836 /* 837 * This is a fall-through for invalid or not implemented (yet) ops 838 */ 839 /* ARGSUSED */ 840 static void 841 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 842 struct compound_state *cs) 843 { 844 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 845 } 846 847 /* 848 * Check if the security flavor, nfsnum, is in the flavor_list. 849 */ 850 bool_t 851 in_flavor_list(int nfsnum, int *flavor_list, int count) 852 { 853 int i; 854 855 for (i = 0; i < count; i++) { 856 if (nfsnum == flavor_list[i]) 857 return (TRUE); 858 } 859 return (FALSE); 860 } 861 862 /* 863 * Used by rfs4_op_secinfo to get the security information from the 864 * export structure associated with the component. 865 */ 866 /* ARGSUSED */ 867 static nfsstat4 868 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 869 { 870 int error, different_export = 0; 871 vnode_t *dvp, *vp, *tvp; 872 struct exportinfo *exi = NULL; 873 fid_t fid; 874 uint_t count, i; 875 secinfo4 *resok_val; 876 struct secinfo *secp; 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 if (error) 929 return (puterrno4(error)); 930 931 /* 932 * If the vnode is in a pseudo filesystem, or if the security flavor 933 * used in the request is valid but not an explicitly shared flavor, 934 * or the access bit indicates that this is a limited access, 935 * check whether this vnode is visible. 936 */ 937 if (!different_export && 938 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 939 cs->access & CS_ACCESS_LIMITED)) { 940 if (! nfs_visible(cs->exi, vp, &different_export)) { 941 VN_RELE(vp); 942 return (puterrno4(ENOENT)); 943 } 944 } 945 946 /* 947 * If it's a mountpoint, then traverse it. 948 */ 949 if (vn_ismntpt(vp)) { 950 tvp = vp; 951 if ((error = traverse(&tvp)) != 0) { 952 VN_RELE(vp); 953 return (puterrno4(error)); 954 } 955 /* remember that we had to traverse mountpoint */ 956 did_traverse = TRUE; 957 vp = tvp; 958 different_export = 1; 959 } else if (vp->v_vfsp != dvp->v_vfsp) { 960 /* 961 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 962 * then vp is probably an LOFS object. We don't need the 963 * realvp, we just need to know that we might have crossed 964 * a server fs boundary and need to call checkexport4. 965 * (LOFS lookup hides server fs mountpoints, and actually calls 966 * traverse) 967 */ 968 different_export = 1; 969 did_traverse = FALSE; 970 } 971 972 /* 973 * Get the export information for it. 974 */ 975 if (different_export) { 976 977 bzero(&fid, sizeof (fid)); 978 fid.fid_len = MAXFIDSZ; 979 error = vop_fid_pseudo(vp, &fid); 980 if (error) { 981 VN_RELE(vp); 982 return (puterrno4(error)); 983 } 984 985 if (dotdot) 986 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 987 else 988 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 989 990 if (exi == NULL) { 991 if (did_traverse == TRUE) { 992 /* 993 * If this vnode is a mounted-on vnode, 994 * but the mounted-on file system is not 995 * exported, send back the secinfo for 996 * the exported node that the mounted-on 997 * vnode lives in. 998 */ 999 exi = cs->exi; 1000 } else { 1001 VN_RELE(vp); 1002 return (puterrno4(EACCES)); 1003 } 1004 } 1005 } else { 1006 exi = cs->exi; 1007 } 1008 ASSERT(exi != NULL); 1009 1010 1011 /* 1012 * Create the secinfo result based on the security information 1013 * from the exportinfo structure (exi). 1014 * 1015 * Return all flavors for a pseudo node. 1016 * For a real export node, return the flavor that the client 1017 * has access with. 1018 */ 1019 ASSERT(RW_LOCK_HELD(&exported_lock)); 1020 if (PSEUDO(exi)) { 1021 count = exi->exi_export.ex_seccnt; /* total sec count */ 1022 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1023 secp = exi->exi_export.ex_secinfo; 1024 1025 for (i = 0; i < count; i++) { 1026 resok_val[i].flavor = secp[i].s_secinfo.sc_rpcnum; 1027 if (resok_val[i].flavor == RPCSEC_GSS) { 1028 rpcsec_gss_info *info; 1029 1030 info = &resok_val[i].flavor_info; 1031 info->qop = secp[i].s_secinfo.sc_qop; 1032 info->service = 1033 (rpc_gss_svc_t)secp[i].s_secinfo.sc_service; 1034 1035 /* get oid opaque data */ 1036 info->oid.sec_oid4_len = 1037 secp[i].s_secinfo.sc_gss_mech_type->length; 1038 info->oid.sec_oid4_val = 1039 kmem_alloc( 1040 secp[i].s_secinfo.sc_gss_mech_type->length, 1041 KM_SLEEP); 1042 bcopy(secp[i].s_secinfo.sc_gss_mech_type->elements, 1043 info->oid.sec_oid4_val, info->oid.sec_oid4_len); 1044 } 1045 } 1046 resp->SECINFO4resok_len = count; 1047 resp->SECINFO4resok_val = resok_val; 1048 } else { 1049 int ret_cnt = 0, k = 0; 1050 int *flavor_list; 1051 1052 count = exi->exi_export.ex_seccnt; /* total sec count */ 1053 secp = exi->exi_export.ex_secinfo; 1054 1055 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1056 /* find out which flavors to return */ 1057 for (i = 0; i < count; i ++) { 1058 int access, flavor, perm; 1059 1060 flavor = secp[i].s_secinfo.sc_nfsnum; 1061 perm = secp[i].s_flags; 1062 1063 access = nfsauth4_secinfo_access(exi, cs->req, 1064 flavor, perm); 1065 1066 if (! (access & NFSAUTH_DENIED) && 1067 ! (access & NFSAUTH_WRONGSEC)) { 1068 flavor_list[ret_cnt] = flavor; 1069 ret_cnt++; 1070 } 1071 } 1072 1073 /* Create the returning SECINFO value */ 1074 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1075 1076 for (i = 0; i < count; i++) { 1077 /* If the flavor is in the flavor list, fill in resok_val. */ 1078 if (in_flavor_list(secp[i].s_secinfo.sc_nfsnum, 1079 flavor_list, ret_cnt)) { 1080 resok_val[k].flavor = secp[i].s_secinfo.sc_rpcnum; 1081 if (resok_val[k].flavor == RPCSEC_GSS) { 1082 rpcsec_gss_info *info; 1083 1084 info = &resok_val[k].flavor_info; 1085 info->qop = secp[i].s_secinfo.sc_qop; 1086 info->service = 1087 (rpc_gss_svc_t)secp[i].s_secinfo.sc_service; 1088 1089 /* get oid opaque data */ 1090 info->oid.sec_oid4_len = 1091 secp[i].s_secinfo.sc_gss_mech_type->length; 1092 info->oid.sec_oid4_val = 1093 kmem_alloc( 1094 secp[i].s_secinfo.sc_gss_mech_type->length, 1095 KM_SLEEP); 1096 bcopy(secp[i].s_secinfo.sc_gss_mech_type->elements, 1097 info->oid.sec_oid4_val, info->oid.sec_oid4_len); 1098 } 1099 k++; 1100 } 1101 if (k >= ret_cnt) 1102 break; 1103 } 1104 resp->SECINFO4resok_len = ret_cnt; 1105 resp->SECINFO4resok_val = resok_val; 1106 kmem_free(flavor_list, count * sizeof (int)); 1107 } 1108 1109 VN_RELE(vp); 1110 return (NFS4_OK); 1111 } 1112 1113 /* 1114 * SECINFO (Operation 33): Obtain required security information on 1115 * the component name in the format of (security-mechanism-oid, qop, service) 1116 * triplets. 1117 */ 1118 /* ARGSUSED */ 1119 static void 1120 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1121 struct compound_state *cs) 1122 { 1123 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1124 utf8string *utfnm = &argop->nfs_argop4_u.opsecinfo.name; 1125 uint_t len; 1126 char *nm; 1127 1128 /* 1129 * Current file handle (cfh) should have been set before getting 1130 * into this function. If not, return error. 1131 */ 1132 if (cs->vp == NULL) { 1133 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1134 return; 1135 } 1136 1137 if (cs->vp->v_type != VDIR) { 1138 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1139 return; 1140 } 1141 1142 /* 1143 * Verify the component name. If failed, error out, but 1144 * do not error out if the component name is a "..". 1145 * SECINFO will return its parents secinfo data for SECINFO "..". 1146 */ 1147 if (!utf8_dir_verify(utfnm)) { 1148 if (utfnm->utf8string_len != 2 || 1149 utfnm->utf8string_val[0] != '.' || 1150 utfnm->utf8string_val[1] != '.') { 1151 *cs->statusp = resp->status = NFS4ERR_INVAL; 1152 return; 1153 } 1154 } 1155 1156 nm = utf8_to_str(utfnm, &len, NULL); 1157 if (nm == NULL) { 1158 *cs->statusp = resp->status = NFS4ERR_INVAL; 1159 return; 1160 } 1161 1162 if (len > MAXNAMELEN) { 1163 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1164 kmem_free(nm, len); 1165 return; 1166 } 1167 1168 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, nm, resp); 1169 1170 kmem_free(nm, len); 1171 } 1172 1173 /* 1174 * Free SECINFO result. 1175 */ 1176 /* ARGSUSED */ 1177 static void 1178 rfs4_op_secinfo_free(nfs_resop4 *resop) 1179 { 1180 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1181 int count, i; 1182 secinfo4 *resok_val; 1183 1184 /* If this is not an Ok result, nothing to free. */ 1185 if (resp->status != NFS4_OK) { 1186 return; 1187 } 1188 1189 count = resp->SECINFO4resok_len; 1190 resok_val = resp->SECINFO4resok_val; 1191 1192 for (i = 0; i < count; i++) { 1193 if (resok_val[i].flavor == RPCSEC_GSS) { 1194 rpcsec_gss_info *info; 1195 1196 info = &resok_val[i].flavor_info; 1197 kmem_free(info->oid.sec_oid4_val, info->oid.sec_oid4_len); 1198 } 1199 } 1200 kmem_free(resok_val, count * sizeof (secinfo4)); 1201 resp->SECINFO4resok_len = 0; 1202 resp->SECINFO4resok_val = NULL; 1203 } 1204 1205 /* 1206 * do label check on client label and server's file lable. 1207 */ 1208 static boolean_t 1209 do_rfs4_label_check(bslabel_t *clabel, vnode_t *vp, int flag) 1210 { 1211 bslabel_t *slabel; 1212 ts_label_t *tslabel; 1213 boolean_t result; 1214 1215 if ((tslabel = nfs4_getflabel(vp)) == NULL) { 1216 return (B_FALSE); 1217 } 1218 slabel = label2bslabel(tslabel); 1219 DTRACE_PROBE4(tx__rfs4__log__info__labelcheck, char *, 1220 "comparing server's file label(1) with client label(2) (vp(3))", 1221 bslabel_t *, slabel, bslabel_t *, clabel, vnode_t *, vp); 1222 1223 if (flag == EQUALITY_CHECK) 1224 result = blequal(clabel, slabel); 1225 else 1226 result = bldominates(clabel, slabel); 1227 label_rele(tslabel); 1228 return (result); 1229 } 1230 1231 /* ARGSUSED */ 1232 static void 1233 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1234 struct compound_state *cs) 1235 { 1236 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1237 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1238 int error; 1239 vnode_t *vp; 1240 struct vattr va; 1241 int checkwriteperm; 1242 cred_t *cr = cs->cr; 1243 bslabel_t *clabel, *slabel; 1244 ts_label_t *tslabel; 1245 boolean_t admin_low_client; 1246 1247 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1248 if (cs->access == CS_ACCESS_DENIED) { 1249 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1250 return; 1251 } 1252 #endif 1253 if (cs->vp == NULL) { 1254 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1255 return; 1256 } 1257 1258 ASSERT(cr != NULL); 1259 1260 vp = cs->vp; 1261 1262 /* 1263 * If the file system is exported read only, it is not appropriate 1264 * to check write permissions for regular files and directories. 1265 * Special files are interpreted by the client, so the underlying 1266 * permissions are sent back to the client for interpretation. 1267 */ 1268 if (rdonly4(cs->exi, cs->vp, req) && 1269 (vp->v_type == VREG || vp->v_type == VDIR)) 1270 checkwriteperm = 0; 1271 else 1272 checkwriteperm = 1; 1273 1274 /* 1275 * XXX 1276 * We need the mode so that we can correctly determine access 1277 * permissions relative to a mandatory lock file. Access to 1278 * mandatory lock files is denied on the server, so it might 1279 * as well be reflected to the server during the open. 1280 */ 1281 va.va_mask = AT_MODE; 1282 error = VOP_GETATTR(vp, &va, 0, cr); 1283 if (error) { 1284 *cs->statusp = resp->status = puterrno4(error); 1285 return; 1286 } 1287 resp->access = 0; 1288 resp->supported = 0; 1289 1290 if (is_system_labeled()) { 1291 ASSERT(req->rq_label != NULL); 1292 clabel = req->rq_label; 1293 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1294 "got client label from request(1)", 1295 struct svc_req *, req); 1296 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1297 if ((tslabel = nfs4_getflabel(vp)) == NULL) { 1298 *cs->statusp = resp->status = puterrno4(EACCES); 1299 return; 1300 } 1301 slabel = label2bslabel(tslabel); 1302 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1303 char *, "got server label(1) for vp(2)", 1304 bslabel_t *, slabel, vnode_t *, vp); 1305 1306 admin_low_client = B_FALSE; 1307 } else 1308 admin_low_client = B_TRUE; 1309 } 1310 1311 if (args->access & ACCESS4_READ) { 1312 error = VOP_ACCESS(vp, VREAD, 0, cr); 1313 if (!error && !MANDLOCK(vp, va.va_mode) && 1314 (!is_system_labeled() || admin_low_client || 1315 bldominates(clabel, slabel))) 1316 resp->access |= ACCESS4_READ; 1317 resp->supported |= ACCESS4_READ; 1318 } 1319 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1320 error = VOP_ACCESS(vp, VEXEC, 0, cr); 1321 if (!error && (!is_system_labeled() || admin_low_client || 1322 bldominates(clabel, slabel))) 1323 resp->access |= ACCESS4_LOOKUP; 1324 resp->supported |= ACCESS4_LOOKUP; 1325 } 1326 if (checkwriteperm && 1327 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1328 error = VOP_ACCESS(vp, VWRITE, 0, cr); 1329 if (!error && !MANDLOCK(vp, va.va_mode) && 1330 (!is_system_labeled() || admin_low_client || 1331 blequal(clabel, slabel))) 1332 resp->access |= 1333 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND)); 1334 resp->supported |= (ACCESS4_MODIFY|ACCESS4_EXTEND); 1335 } 1336 1337 if (checkwriteperm && 1338 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1339 error = VOP_ACCESS(vp, VWRITE, 0, cr); 1340 if (!error && (!is_system_labeled() || admin_low_client || 1341 blequal(clabel, slabel))) 1342 resp->access |= ACCESS4_DELETE; 1343 resp->supported |= ACCESS4_DELETE; 1344 } 1345 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1346 error = VOP_ACCESS(vp, VEXEC, 0, cr); 1347 if (!error && !MANDLOCK(vp, va.va_mode) && 1348 (!is_system_labeled() || admin_low_client || 1349 bldominates(clabel, slabel))) 1350 resp->access |= ACCESS4_EXECUTE; 1351 resp->supported |= ACCESS4_EXECUTE; 1352 } 1353 1354 if (is_system_labeled() && !admin_low_client) 1355 label_rele(tslabel); 1356 1357 *cs->statusp = resp->status = NFS4_OK; 1358 } 1359 1360 /* ARGSUSED */ 1361 static void 1362 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1363 struct compound_state *cs) 1364 { 1365 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1366 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1367 int error; 1368 vnode_t *vp = cs->vp; 1369 cred_t *cr = cs->cr; 1370 vattr_t va; 1371 1372 if (vp == NULL) { 1373 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1374 return; 1375 } 1376 if (cs->access == CS_ACCESS_DENIED) { 1377 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1378 return; 1379 } 1380 1381 if (args->offset + args->count < args->offset) { 1382 *cs->statusp = resp->status = NFS4ERR_INVAL; 1383 return; 1384 } 1385 1386 va.va_mask = AT_UID; 1387 error = VOP_GETATTR(vp, &va, 0, cr); 1388 1389 /* 1390 * If we can't get the attributes, then we can't do the 1391 * right access checking. So, we'll fail the request. 1392 */ 1393 if (error) { 1394 *cs->statusp = resp->status = puterrno4(error); 1395 return; 1396 } 1397 if (rdonly4(cs->exi, cs->vp, req)) { 1398 *cs->statusp = resp->status = NFS4ERR_ROFS; 1399 return; 1400 } 1401 1402 if (vp->v_type != VREG) { 1403 if (vp->v_type == VDIR) 1404 resp->status = NFS4ERR_ISDIR; 1405 else 1406 resp->status = NFS4ERR_INVAL; 1407 *cs->statusp = resp->status; 1408 return; 1409 } 1410 1411 if (crgetuid(cr) != va.va_uid && 1412 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr))) { 1413 *cs->statusp = resp->status = puterrno4(error); 1414 return; 1415 } 1416 1417 error = VOP_PUTPAGE(vp, args->offset, args->count, 0, cr); 1418 if (!error) 1419 error = VOP_FSYNC(vp, FNODSYNC, cr); 1420 1421 if (error) { 1422 *cs->statusp = resp->status = puterrno4(error); 1423 return; 1424 } 1425 1426 *cs->statusp = resp->status = NFS4_OK; 1427 resp->writeverf = Write4verf; 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); 1485 if (error) { 1486 *cs->statusp = resp->status = puterrno4(error); 1487 return (NULL); 1488 } 1489 return (vp); 1490 } 1491 1492 /* 1493 * nfsv4 create is used to create non-regular files. For regular files, 1494 * use nfsv4 open. 1495 */ 1496 /* ARGSUSED */ 1497 static void 1498 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1499 struct compound_state *cs) 1500 { 1501 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1502 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1503 int error; 1504 struct vattr bva, iva, iva2, ava, *vap; 1505 cred_t *cr = cs->cr; 1506 vnode_t *dvp = cs->vp; 1507 vnode_t *vp = NULL; 1508 char *nm, *lnm; 1509 uint_t len, llen; 1510 int syncval = 0; 1511 struct nfs4_svgetit_arg sarg; 1512 struct nfs4_ntov_table ntov; 1513 struct statvfs64 sb; 1514 nfsstat4 status; 1515 1516 resp->attrset = 0; 1517 1518 if (dvp == NULL) { 1519 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1520 return; 1521 } 1522 1523 /* 1524 * If there is an unshared filesystem mounted on this vnode, 1525 * do not allow to create an object in this directory. 1526 */ 1527 if (vn_ismntpt(dvp)) { 1528 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1529 return; 1530 } 1531 1532 /* Verify that type is correct */ 1533 switch (args->type) { 1534 case NF4LNK: 1535 case NF4BLK: 1536 case NF4CHR: 1537 case NF4SOCK: 1538 case NF4FIFO: 1539 case NF4DIR: 1540 break; 1541 default: 1542 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1543 return; 1544 }; 1545 1546 if (cs->access == CS_ACCESS_DENIED) { 1547 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1548 return; 1549 } 1550 if (dvp->v_type != VDIR) { 1551 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1552 return; 1553 } 1554 if (!utf8_dir_verify(&args->objname)) { 1555 *cs->statusp = resp->status = NFS4ERR_INVAL; 1556 return; 1557 } 1558 1559 if (rdonly4(cs->exi, cs->vp, req)) { 1560 *cs->statusp = resp->status = NFS4ERR_ROFS; 1561 return; 1562 } 1563 1564 /* 1565 * Name of newly created object 1566 */ 1567 nm = utf8_to_fn(&args->objname, &len, NULL); 1568 if (nm == NULL) { 1569 *cs->statusp = resp->status = NFS4ERR_INVAL; 1570 return; 1571 } 1572 1573 if (len > MAXNAMELEN) { 1574 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1575 kmem_free(nm, len); 1576 return; 1577 } 1578 1579 resp->attrset = 0; 1580 1581 sarg.sbp = &sb; 1582 nfs4_ntov_table_init(&ntov); 1583 1584 status = do_rfs4_set_attrs(&resp->attrset, 1585 &args->createattrs, cs, &sarg, 1586 &ntov, NFS4ATTR_SETIT); 1587 1588 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1589 status = NFS4ERR_INVAL; 1590 1591 if (status != NFS4_OK) { 1592 *cs->statusp = resp->status = status; 1593 kmem_free(nm, len); 1594 nfs4_ntov_table_free(&ntov, &sarg); 1595 resp->attrset = 0; 1596 return; 1597 } 1598 1599 /* Get "before" change value */ 1600 bva.va_mask = AT_CTIME|AT_SEQ; 1601 error = VOP_GETATTR(dvp, &bva, 0, cr); 1602 if (error) { 1603 *cs->statusp = resp->status = puterrno4(error); 1604 kmem_free(nm, len); 1605 nfs4_ntov_table_free(&ntov, &sarg); 1606 resp->attrset = 0; 1607 return; 1608 } 1609 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1610 1611 vap = sarg.vap; 1612 1613 /* 1614 * Set default initial values for attributes when not specified 1615 * in createattrs. 1616 */ 1617 if ((vap->va_mask & AT_UID) == 0) { 1618 vap->va_uid = crgetuid(cr); 1619 vap->va_mask |= AT_UID; 1620 } 1621 if ((vap->va_mask & AT_GID) == 0) { 1622 vap->va_gid = crgetgid(cr); 1623 vap->va_mask |= AT_GID; 1624 } 1625 1626 vap->va_mask |= AT_TYPE; 1627 switch (args->type) { 1628 case NF4DIR: 1629 vap->va_type = VDIR; 1630 if ((vap->va_mask & AT_MODE) == 0) { 1631 vap->va_mode = 0700; /* default: owner rwx only */ 1632 vap->va_mask |= AT_MODE; 1633 } 1634 error = VOP_MKDIR(dvp, nm, vap, &vp, cr); 1635 if (error) 1636 break; 1637 1638 /* 1639 * Get the initial "after" sequence number, if it fails, 1640 * set to zero 1641 */ 1642 iva.va_mask = AT_SEQ; 1643 if (VOP_GETATTR(dvp, &iva, 0, cs->cr)) 1644 iva.va_seq = 0; 1645 break; 1646 case NF4LNK: 1647 vap->va_type = VLNK; 1648 if ((vap->va_mask & AT_MODE) == 0) { 1649 vap->va_mode = 0700; /* default: owner rwx only */ 1650 vap->va_mask |= AT_MODE; 1651 } 1652 1653 /* 1654 * symlink names must be treated as data 1655 */ 1656 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1657 1658 if (lnm == NULL) { 1659 *cs->statusp = resp->status = NFS4ERR_INVAL; 1660 kmem_free(nm, len); 1661 nfs4_ntov_table_free(&ntov, &sarg); 1662 resp->attrset = 0; 1663 return; 1664 } 1665 1666 if (llen > MAXPATHLEN) { 1667 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1668 kmem_free(nm, len); 1669 kmem_free(lnm, llen); 1670 nfs4_ntov_table_free(&ntov, &sarg); 1671 resp->attrset = 0; 1672 return; 1673 } 1674 1675 error = VOP_SYMLINK(dvp, nm, vap, lnm, cr); 1676 if (lnm != NULL) 1677 kmem_free(lnm, llen); 1678 if (error) 1679 break; 1680 1681 /* 1682 * Get the initial "after" sequence number, if it fails, 1683 * set to zero 1684 */ 1685 iva.va_mask = AT_SEQ; 1686 if (VOP_GETATTR(dvp, &iva, 0, cs->cr)) 1687 iva.va_seq = 0; 1688 1689 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr); 1690 if (error) 1691 break; 1692 1693 /* 1694 * va_seq is not safe over VOP calls, check it again 1695 * if it has changed zero out iva to force atomic = FALSE. 1696 */ 1697 iva2.va_mask = AT_SEQ; 1698 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr) || 1699 iva2.va_seq != iva.va_seq) 1700 iva.va_seq = 0; 1701 break; 1702 default: 1703 /* 1704 * probably a special file. 1705 */ 1706 if ((vap->va_mask & AT_MODE) == 0) { 1707 vap->va_mode = 0600; /* default: owner rw only */ 1708 vap->va_mask |= AT_MODE; 1709 } 1710 syncval = FNODSYNC; 1711 /* 1712 * We know this will only generate one VOP call 1713 */ 1714 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, nm); 1715 1716 if (vp == NULL) { 1717 kmem_free(nm, len); 1718 nfs4_ntov_table_free(&ntov, &sarg); 1719 resp->attrset = 0; 1720 return; 1721 } 1722 1723 /* 1724 * Get the initial "after" sequence number, if it fails, 1725 * set to zero 1726 */ 1727 iva.va_mask = AT_SEQ; 1728 if (VOP_GETATTR(dvp, &iva, 0, cs->cr)) 1729 iva.va_seq = 0; 1730 1731 break; 1732 } 1733 kmem_free(nm, len); 1734 1735 if (error) { 1736 *cs->statusp = resp->status = puterrno4(error); 1737 } 1738 1739 /* 1740 * Force modified data and metadata out to stable storage. 1741 */ 1742 (void) VOP_FSYNC(dvp, 0, cr); 1743 1744 if (resp->status != NFS4_OK) { 1745 if (vp != NULL) 1746 VN_RELE(vp); 1747 nfs4_ntov_table_free(&ntov, &sarg); 1748 resp->attrset = 0; 1749 return; 1750 } 1751 1752 /* 1753 * Finish setup of cinfo response, "before" value already set. 1754 * Get "after" change value, if it fails, simply return the 1755 * before value. 1756 */ 1757 ava.va_mask = AT_CTIME|AT_SEQ; 1758 if (VOP_GETATTR(dvp, &ava, 0, cr)) { 1759 ava.va_ctime = bva.va_ctime; 1760 ava.va_seq = 0; 1761 } 1762 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1763 1764 /* 1765 * True verification that object was created with correct 1766 * attrs is impossible. The attrs could have been changed 1767 * immediately after object creation. If attributes did 1768 * not verify, the only recourse for the server is to 1769 * destroy the object. Maybe if some attrs (like gid) 1770 * are set incorrectly, the object should be destroyed; 1771 * however, seems bad as a default policy. Do we really 1772 * want to destroy an object over one of the times not 1773 * verifying correctly? For these reasons, the server 1774 * currently sets bits in attrset for createattrs 1775 * that were set; however, no verification is done. 1776 * 1777 * vmask_to_nmask accounts for vattr bits set on create 1778 * [do_rfs4_set_attrs() only sets resp bits for 1779 * non-vattr/vfs bits.] 1780 * Mask off any bits set by default so as not to return 1781 * more attrset bits than were requested in createattrs 1782 */ 1783 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1784 resp->attrset &= args->createattrs.attrmask; 1785 nfs4_ntov_table_free(&ntov, &sarg); 1786 1787 error = makefh4(&cs->fh, vp, cs->exi); 1788 if (error) { 1789 *cs->statusp = resp->status = puterrno4(error); 1790 } 1791 1792 /* 1793 * The cinfo.atomic = TRUE only if we got no errors, we have 1794 * non-zero va_seq's, and it has incremented by exactly one 1795 * during the creation and it didn't change during the VOP_LOOKUP 1796 * or VOP_FSYNC. 1797 */ 1798 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1799 iva.va_seq == (bva.va_seq + 1) && 1800 iva.va_seq == ava.va_seq) 1801 resp->cinfo.atomic = TRUE; 1802 else 1803 resp->cinfo.atomic = FALSE; 1804 1805 (void) VOP_FSYNC(vp, syncval, cr); 1806 1807 if (resp->status != NFS4_OK) { 1808 VN_RELE(vp); 1809 return; 1810 } 1811 if (cs->vp) 1812 VN_RELE(cs->vp); 1813 1814 cs->vp = vp; 1815 *cs->statusp = resp->status = NFS4_OK; 1816 } 1817 1818 1819 /*ARGSUSED*/ 1820 static void 1821 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1822 struct compound_state *cs) 1823 { 1824 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1825 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1826 rfs4_deleg_state_t *dsp; 1827 nfsstat4 status; 1828 1829 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1830 resp->status = *cs->statusp = status; 1831 if (status != NFS4_OK) 1832 return; 1833 1834 /* Ensure specified filehandle matches */ 1835 if (cs->vp != dsp->finfo->vp) { 1836 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1837 } else 1838 rfs4_return_deleg(dsp, FALSE); 1839 1840 rfs4_update_lease(dsp->client); 1841 1842 rfs4_deleg_state_rele(dsp); 1843 } 1844 1845 /* 1846 * Check to see if a given "flavor" is an explicitly shared flavor. 1847 * The assumption of this routine is the "flavor" is already a valid 1848 * flavor in the secinfo list of "exi". 1849 * 1850 * e.g. 1851 * # share -o sec=flavor1 /export 1852 * # share -o sec=flavor2 /export/home 1853 * 1854 * flavor2 is not an explicitly shared flavor for /export, 1855 * however it is in the secinfo list for /export thru the 1856 * server namespace setup. 1857 */ 1858 int 1859 is_exported_sec(int flavor, struct exportinfo *exi) 1860 { 1861 int i; 1862 struct secinfo *sp; 1863 1864 sp = exi->exi_export.ex_secinfo; 1865 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1866 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1867 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1868 return (SEC_REF_EXPORTED(&sp[i])); 1869 } 1870 } 1871 1872 /* Should not reach this point based on the assumption */ 1873 return (0); 1874 } 1875 1876 /* 1877 * Check if the security flavor used in the request matches what is 1878 * required at the export point or at the root pseudo node (exi_root). 1879 * 1880 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1881 * 1882 */ 1883 static int 1884 secinfo_match_or_authnone(struct compound_state *cs) 1885 { 1886 int i; 1887 struct secinfo *sp; 1888 1889 /* 1890 * Check cs->nfsflavor (from the request) against 1891 * the current export data in cs->exi. 1892 */ 1893 sp = cs->exi->exi_export.ex_secinfo; 1894 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1895 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1896 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1897 return (1); 1898 } 1899 1900 return (0); 1901 } 1902 1903 /* 1904 * Check the access authority for the client and return the correct error. 1905 */ 1906 nfsstat4 1907 call_checkauth4(struct compound_state *cs, struct svc_req *req) 1908 { 1909 int authres; 1910 1911 /* 1912 * First, check if the security flavor used in the request 1913 * are among the flavors set in the server namespace. 1914 */ 1915 if (!secinfo_match_or_authnone(cs)) { 1916 *cs->statusp = NFS4ERR_WRONGSEC; 1917 return (*cs->statusp); 1918 } 1919 1920 authres = checkauth4(cs, req); 1921 1922 if (authres > 0) { 1923 *cs->statusp = NFS4_OK; 1924 if (! (cs->access & CS_ACCESS_LIMITED)) 1925 cs->access = CS_ACCESS_OK; 1926 } else if (authres == 0) { 1927 *cs->statusp = NFS4ERR_ACCESS; 1928 } else if (authres == -2) { 1929 *cs->statusp = NFS4ERR_WRONGSEC; 1930 } else { 1931 *cs->statusp = NFS4ERR_DELAY; 1932 } 1933 return (*cs->statusp); 1934 } 1935 1936 /* 1937 * bitmap4_to_attrmask is called by getattr and readdir. 1938 * It sets up the vattr mask and determines whether vfsstat call is needed 1939 * based on the input bitmap. 1940 * Returns nfsv4 status. 1941 */ 1942 static nfsstat4 1943 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 1944 { 1945 int i; 1946 uint_t va_mask; 1947 struct statvfs64 *sbp = sargp->sbp; 1948 1949 sargp->sbp = NULL; 1950 sargp->flag = 0; 1951 sargp->rdattr_error = NFS4_OK; 1952 sargp->mntdfid_set = FALSE; 1953 if (sargp->cs->vp) 1954 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 1955 FH4_ATTRDIR | FH4_NAMEDATTR); 1956 else 1957 sargp->xattr = 0; 1958 1959 /* 1960 * Set rdattr_error_req to true if return error per 1961 * failed entry rather than fail the readdir. 1962 */ 1963 if (breq & FATTR4_RDATTR_ERROR_MASK) 1964 sargp->rdattr_error_req = 1; 1965 else 1966 sargp->rdattr_error_req = 0; 1967 1968 /* 1969 * generate the va_mask 1970 * Handle the easy cases first 1971 */ 1972 switch (breq) { 1973 case NFS4_NTOV_ATTR_MASK: 1974 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 1975 return (NFS4_OK); 1976 1977 case NFS4_FS_ATTR_MASK: 1978 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 1979 sargp->sbp = sbp; 1980 return (NFS4_OK); 1981 1982 case NFS4_NTOV_ATTR_CACHE_MASK: 1983 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 1984 return (NFS4_OK); 1985 1986 case FATTR4_LEASE_TIME_MASK: 1987 sargp->vap->va_mask = 0; 1988 return (NFS4_OK); 1989 1990 default: 1991 va_mask = 0; 1992 for (i = 0; i < nfs4_ntov_map_size; i++) { 1993 if ((breq & nfs4_ntov_map[i].fbit) && 1994 nfs4_ntov_map[i].vbit) 1995 va_mask |= nfs4_ntov_map[i].vbit; 1996 } 1997 1998 /* 1999 * Check is vfsstat is needed 2000 */ 2001 if (breq & NFS4_FS_ATTR_MASK) 2002 sargp->sbp = sbp; 2003 2004 sargp->vap->va_mask = va_mask; 2005 return (NFS4_OK); 2006 } 2007 /* NOTREACHED */ 2008 } 2009 2010 /* 2011 * bitmap4_get_sysattrs is called by getattr and readdir. 2012 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2013 * Returns nfsv4 status. 2014 */ 2015 static nfsstat4 2016 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2017 { 2018 int error; 2019 struct compound_state *cs = sargp->cs; 2020 vnode_t *vp = cs->vp; 2021 2022 if (sargp->sbp != NULL) { 2023 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2024 sargp->sbp = NULL; /* to identify error */ 2025 return (puterrno4(error)); 2026 } 2027 } 2028 2029 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2030 } 2031 2032 static void 2033 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2034 { 2035 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2036 KM_SLEEP); 2037 ntovp->attrcnt = 0; 2038 ntovp->vfsstat = FALSE; 2039 } 2040 2041 static void 2042 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2043 struct nfs4_svgetit_arg *sargp) 2044 { 2045 int i; 2046 union nfs4_attr_u *na; 2047 uint8_t *amap; 2048 2049 /* 2050 * XXX Should do the same checks for whether the bit is set 2051 */ 2052 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2053 i < ntovp->attrcnt; i++, na++, amap++) { 2054 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2055 NFS4ATTR_FREEIT, sargp, na); 2056 } 2057 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2058 /* 2059 * xdr_free for getattr will be done later 2060 */ 2061 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2062 i < ntovp->attrcnt; i++, na++, amap++) { 2063 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2064 } 2065 } 2066 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2067 } 2068 2069 /* 2070 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2071 */ 2072 static nfsstat4 2073 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2074 struct nfs4_svgetit_arg *sargp) 2075 { 2076 int error = 0; 2077 int i, k; 2078 struct nfs4_ntov_table ntov; 2079 XDR xdr; 2080 ulong_t xdr_size; 2081 char *xdr_attrs; 2082 nfsstat4 status = NFS4_OK; 2083 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2084 union nfs4_attr_u *na; 2085 uint8_t *amap; 2086 2087 sargp->op = NFS4ATTR_GETIT; 2088 sargp->flag = 0; 2089 2090 fattrp->attrmask = 0; 2091 /* if no bits requested, then return empty fattr4 */ 2092 if (breq == 0) { 2093 fattrp->attrlist4_len = 0; 2094 fattrp->attrlist4 = NULL; 2095 return (NFS4_OK); 2096 } 2097 2098 /* 2099 * return NFS4ERR_INVAL when client requests write-only attrs 2100 */ 2101 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2102 return (NFS4ERR_INVAL); 2103 2104 nfs4_ntov_table_init(&ntov); 2105 na = ntov.na; 2106 amap = ntov.amap; 2107 2108 /* 2109 * Now loop to get or verify the attrs 2110 */ 2111 for (i = 0; i < nfs4_ntov_map_size; i++) { 2112 if (breq & nfs4_ntov_map[i].fbit) { 2113 if ((*nfs4_ntov_map[i].sv_getit)( 2114 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2115 2116 error = (*nfs4_ntov_map[i].sv_getit)( 2117 NFS4ATTR_GETIT, sargp, na); 2118 2119 /* 2120 * Possible error values: 2121 * >0 if sv_getit failed to 2122 * get the attr; 0 if succeeded; 2123 * <0 if rdattr_error and the 2124 * attribute cannot be returned. 2125 */ 2126 if (error && !(sargp->rdattr_error_req)) 2127 goto done; 2128 /* 2129 * If error then just for entry 2130 */ 2131 if (error == 0) { 2132 fattrp->attrmask |= 2133 nfs4_ntov_map[i].fbit; 2134 *amap++ = 2135 (uint8_t)nfs4_ntov_map[i].nval; 2136 na++; 2137 (ntov.attrcnt)++; 2138 } else if ((error > 0) && 2139 (sargp->rdattr_error == NFS4_OK)) { 2140 sargp->rdattr_error = puterrno4(error); 2141 } 2142 error = 0; 2143 } 2144 } 2145 } 2146 2147 /* 2148 * If rdattr_error was set after the return value for it was assigned, 2149 * update it. 2150 */ 2151 if (prev_rdattr_error != sargp->rdattr_error) { 2152 na = ntov.na; 2153 amap = ntov.amap; 2154 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2155 k = *amap; 2156 if (k < FATTR4_RDATTR_ERROR) { 2157 continue; 2158 } 2159 if ((k == FATTR4_RDATTR_ERROR) && 2160 ((*nfs4_ntov_map[k].sv_getit)( 2161 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2162 2163 (void) (*nfs4_ntov_map[k].sv_getit)( 2164 NFS4ATTR_GETIT, sargp, na); 2165 } 2166 break; 2167 } 2168 } 2169 2170 xdr_size = 0; 2171 na = ntov.na; 2172 amap = ntov.amap; 2173 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2174 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2175 } 2176 2177 fattrp->attrlist4_len = xdr_size; 2178 if (xdr_size) { 2179 /* freed by rfs4_op_getattr_free() */ 2180 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2181 2182 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2183 2184 na = ntov.na; 2185 amap = ntov.amap; 2186 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2187 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2188 cmn_err(CE_WARN, "do_rfs4_op_getattr: xdr " 2189 "encode of attribute %d failed\n", 2190 *amap); 2191 status = NFS4ERR_SERVERFAULT; 2192 break; 2193 } 2194 } 2195 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2196 } else { 2197 fattrp->attrlist4 = NULL; 2198 } 2199 done: 2200 2201 nfs4_ntov_table_free(&ntov, sargp); 2202 2203 if (error != 0) 2204 status = puterrno4(error); 2205 2206 return (status); 2207 } 2208 2209 /* ARGSUSED */ 2210 static void 2211 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2212 struct compound_state *cs) 2213 { 2214 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2215 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2216 struct nfs4_svgetit_arg sarg; 2217 struct statvfs64 sb; 2218 nfsstat4 status; 2219 2220 if (cs->vp == NULL) { 2221 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2222 return; 2223 } 2224 2225 if (cs->access == CS_ACCESS_DENIED) { 2226 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2227 return; 2228 } 2229 2230 sarg.sbp = &sb; 2231 sarg.cs = cs; 2232 2233 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2234 if (status == NFS4_OK) { 2235 status = bitmap4_get_sysattrs(&sarg); 2236 if (status == NFS4_OK) 2237 status = do_rfs4_op_getattr(args->attr_request, 2238 &resp->obj_attributes, &sarg); 2239 } 2240 *cs->statusp = resp->status = status; 2241 } 2242 2243 static void 2244 rfs4_op_getattr_free(nfs_resop4 *resop) 2245 { 2246 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2247 2248 nfs4_fattr4_free(&resp->obj_attributes); 2249 } 2250 2251 /* ARGSUSED */ 2252 static void 2253 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2254 struct compound_state *cs) 2255 { 2256 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2257 2258 if (cs->vp == NULL) { 2259 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2260 return; 2261 } 2262 if (cs->access == CS_ACCESS_DENIED) { 2263 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2264 return; 2265 } 2266 2267 resp->object.nfs_fh4_val = 2268 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2269 nfs_fh4_copy(&cs->fh, &resp->object); 2270 *cs->statusp = resp->status = NFS4_OK; 2271 } 2272 2273 static void 2274 rfs4_op_getfh_free(nfs_resop4 *resop) 2275 { 2276 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2277 2278 if (resp->status == NFS4_OK && 2279 resp->object.nfs_fh4_val != NULL) { 2280 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2281 resp->object.nfs_fh4_val = NULL; 2282 resp->object.nfs_fh4_len = 0; 2283 } 2284 } 2285 2286 /* 2287 * illegal: args: void 2288 * res : status (NFS4ERR_OP_ILLEGAL) 2289 */ 2290 /* ARGSUSED */ 2291 static void 2292 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2293 struct svc_req *req, struct compound_state *cs) 2294 { 2295 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2296 2297 resop->resop = OP_ILLEGAL; 2298 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2299 } 2300 2301 /* 2302 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2303 * res: status. If success - CURRENT_FH unchanged, return change_info 2304 */ 2305 /* ARGSUSED */ 2306 static void 2307 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2308 struct compound_state *cs) 2309 { 2310 LINK4args *args = &argop->nfs_argop4_u.oplink; 2311 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2312 int error; 2313 vnode_t *vp; 2314 vnode_t *dvp; 2315 struct vattr bdva, idva, adva; 2316 char *nm; 2317 uint_t len; 2318 2319 /* SAVED_FH: source object */ 2320 vp = cs->saved_vp; 2321 if (vp == NULL) { 2322 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2323 return; 2324 } 2325 2326 /* CURRENT_FH: target directory */ 2327 dvp = cs->vp; 2328 if (dvp == NULL) { 2329 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2330 return; 2331 } 2332 2333 /* 2334 * If there is a non-shared filesystem mounted on this vnode, 2335 * do not allow to link any file in this directory. 2336 */ 2337 if (vn_ismntpt(dvp)) { 2338 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2339 return; 2340 } 2341 2342 if (cs->access == CS_ACCESS_DENIED) { 2343 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2344 return; 2345 } 2346 2347 /* Check source object's type validity */ 2348 if (vp->v_type == VDIR) { 2349 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2350 return; 2351 } 2352 2353 /* Check target directory's type */ 2354 if (dvp->v_type != VDIR) { 2355 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2356 return; 2357 } 2358 2359 if (cs->saved_exi != cs->exi) { 2360 *cs->statusp = resp->status = NFS4ERR_XDEV; 2361 return; 2362 } 2363 2364 if (!utf8_dir_verify(&args->newname)) { 2365 *cs->statusp = resp->status = NFS4ERR_INVAL; 2366 return; 2367 } 2368 2369 nm = utf8_to_fn(&args->newname, &len, NULL); 2370 if (nm == NULL) { 2371 *cs->statusp = resp->status = NFS4ERR_INVAL; 2372 return; 2373 } 2374 2375 if (len > MAXNAMELEN) { 2376 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2377 kmem_free(nm, len); 2378 return; 2379 } 2380 2381 if (rdonly4(cs->exi, cs->vp, req)) { 2382 *cs->statusp = resp->status = NFS4ERR_ROFS; 2383 kmem_free(nm, len); 2384 return; 2385 } 2386 2387 /* Get "before" change value */ 2388 bdva.va_mask = AT_CTIME|AT_SEQ; 2389 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr); 2390 if (error) { 2391 *cs->statusp = resp->status = puterrno4(error); 2392 kmem_free(nm, len); 2393 return; 2394 } 2395 2396 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2397 2398 error = VOP_LINK(dvp, vp, nm, cs->cr); 2399 2400 kmem_free(nm, len); 2401 2402 /* 2403 * Get the initial "after" sequence number, if it fails, set to zero 2404 */ 2405 idva.va_mask = AT_SEQ; 2406 if (VOP_GETATTR(dvp, &idva, 0, cs->cr)) 2407 idva.va_seq = 0; 2408 2409 /* 2410 * Force modified data and metadata out to stable storage. 2411 */ 2412 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr); 2413 (void) VOP_FSYNC(dvp, 0, cs->cr); 2414 2415 if (error) { 2416 *cs->statusp = resp->status = puterrno4(error); 2417 return; 2418 } 2419 2420 /* 2421 * Get "after" change value, if it fails, simply return the 2422 * before value. 2423 */ 2424 adva.va_mask = AT_CTIME|AT_SEQ; 2425 if (VOP_GETATTR(dvp, &adva, 0, cs->cr)) { 2426 adva.va_ctime = bdva.va_ctime; 2427 adva.va_seq = 0; 2428 } 2429 2430 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2431 2432 /* 2433 * The cinfo.atomic = TRUE only if we have 2434 * non-zero va_seq's, and it has incremented by exactly one 2435 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2436 */ 2437 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2438 idva.va_seq == (bdva.va_seq + 1) && 2439 idva.va_seq == adva.va_seq) 2440 resp->cinfo.atomic = TRUE; 2441 else 2442 resp->cinfo.atomic = FALSE; 2443 2444 *cs->statusp = resp->status = NFS4_OK; 2445 } 2446 2447 /* 2448 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2449 */ 2450 2451 /* ARGSUSED */ 2452 static nfsstat4 2453 do_rfs4_op_lookup(char *nm, uint_t buflen, struct svc_req *req, 2454 struct compound_state *cs) 2455 { 2456 int error; 2457 int different_export = 0; 2458 vnode_t *vp, *tvp, *pre_tvp = NULL, *oldvp = NULL; 2459 struct exportinfo *exi = NULL, *pre_exi = NULL; 2460 nfsstat4 stat; 2461 fid_t fid; 2462 int attrdir, dotdot, walk; 2463 bool_t is_newvp = FALSE; 2464 2465 if (cs->vp->v_flag & V_XATTRDIR) { 2466 attrdir = 1; 2467 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2468 } else { 2469 attrdir = 0; 2470 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2471 } 2472 2473 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2474 2475 /* 2476 * If dotdotting, then need to check whether it's 2477 * above the root of a filesystem, or above an 2478 * export point. 2479 */ 2480 if (dotdot) { 2481 2482 /* 2483 * If dotdotting at the root of a filesystem, then 2484 * need to traverse back to the mounted-on filesystem 2485 * and do the dotdot lookup there. 2486 */ 2487 if (cs->vp->v_flag & VROOT) { 2488 2489 /* 2490 * If at the system root, then can 2491 * go up no further. 2492 */ 2493 if (VN_CMP(cs->vp, rootdir)) 2494 return (puterrno4(ENOENT)); 2495 2496 /* 2497 * Traverse back to the mounted-on filesystem 2498 */ 2499 cs->vp = untraverse(cs->vp); 2500 2501 /* 2502 * Set the different_export flag so we remember 2503 * to pick up a new exportinfo entry for 2504 * this new filesystem. 2505 */ 2506 different_export = 1; 2507 } else { 2508 2509 /* 2510 * If dotdotting above an export point then set 2511 * the different_export to get new export info. 2512 */ 2513 different_export = nfs_exported(cs->exi, cs->vp); 2514 } 2515 } 2516 2517 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr); 2518 if (error) 2519 return (puterrno4(error)); 2520 2521 /* 2522 * If the vnode is in a pseudo filesystem, check whether it is visible. 2523 * 2524 * XXX if the vnode is a symlink and it is not visible in 2525 * a pseudo filesystem, return ENOENT (not following symlink). 2526 * V4 client can not mount such symlink. This is a regression 2527 * from V2/V3. 2528 * 2529 * In the same exported filesystem, if the security flavor used 2530 * is not an explicitly shared flavor, limit the view to the visible 2531 * list entries only. This is not a WRONGSEC case because it's already 2532 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2533 */ 2534 if (!different_export && 2535 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2536 cs->access & CS_ACCESS_LIMITED)) { 2537 if (! nfs_visible(cs->exi, vp, &different_export)) { 2538 VN_RELE(vp); 2539 return (puterrno4(ENOENT)); 2540 } 2541 } 2542 2543 /* 2544 * If it's a mountpoint, then traverse it. 2545 */ 2546 if (vn_ismntpt(vp)) { 2547 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2548 pre_tvp = vp; /* save pre-traversed vnode */ 2549 2550 /* 2551 * hold pre_tvp to counteract rele by traverse. We will 2552 * need pre_tvp below if checkexport4 fails 2553 */ 2554 VN_HOLD(pre_tvp); 2555 tvp = vp; 2556 if ((error = traverse(&tvp)) != 0) { 2557 VN_RELE(vp); 2558 VN_RELE(pre_tvp); 2559 return (puterrno4(error)); 2560 } 2561 vp = tvp; 2562 different_export = 1; 2563 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2564 /* 2565 * The vfsp comparison is to handle the case where 2566 * a LOFS mount is shared. lo_lookup traverses mount points, 2567 * and NFS is unaware of local fs transistions because 2568 * v_vfsmountedhere isn't set. For this special LOFS case, 2569 * the dir and the obj returned by lookup will have different 2570 * vfs ptrs. 2571 */ 2572 different_export = 1; 2573 } 2574 2575 if (different_export) { 2576 2577 bzero(&fid, sizeof (fid)); 2578 fid.fid_len = MAXFIDSZ; 2579 error = vop_fid_pseudo(vp, &fid); 2580 if (error) { 2581 VN_RELE(vp); 2582 if (pre_tvp) 2583 VN_RELE(pre_tvp); 2584 return (puterrno4(error)); 2585 } 2586 2587 if (dotdot) 2588 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2589 else 2590 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2591 2592 if (exi == NULL) { 2593 if (pre_tvp) { 2594 /* 2595 * If this vnode is a mounted-on vnode, 2596 * but the mounted-on file system is not 2597 * exported, send back the filehandle for 2598 * the mounted-on vnode, not the root of 2599 * the mounted-on file system. 2600 */ 2601 VN_RELE(vp); 2602 vp = pre_tvp; 2603 exi = pre_exi; 2604 } else { 2605 VN_RELE(vp); 2606 return (puterrno4(EACCES)); 2607 } 2608 } else if (pre_tvp) { 2609 /* we're done with pre_tvp now. release extra hold */ 2610 VN_RELE(pre_tvp); 2611 } 2612 2613 cs->exi = exi; 2614 2615 /* 2616 * Now we do a checkauth4. The reason is that 2617 * this client/user may not have access to the new 2618 * exported file system, and if he does, 2619 * the client/user may be mapped to a different uid. 2620 * 2621 * We start with a new cr, because the checkauth4 done 2622 * in the PUT*FH operation over wrote the cred's uid, 2623 * gid, etc, and we want the real thing before calling 2624 * checkauth4() 2625 */ 2626 crfree(cs->cr); 2627 cs->cr = crdup(cs->basecr); 2628 2629 if (cs->vp) 2630 oldvp = cs->vp; 2631 cs->vp = vp; 2632 is_newvp = TRUE; 2633 2634 stat = call_checkauth4(cs, req); 2635 if (stat != NFS4_OK) { 2636 VN_RELE(cs->vp); 2637 cs->vp = oldvp; 2638 return (stat); 2639 } 2640 } 2641 2642 /* 2643 * After various NFS checks, do a label check on the path 2644 * component. The label on this path should either be the 2645 * global zone's label or a zone's label. We are only 2646 * interested in the zone's label because exported files 2647 * in global zone is accessible (though read-only) to 2648 * clients. The exportability/visibility check is already 2649 * done before reaching this code. 2650 */ 2651 if (is_system_labeled()) { 2652 bslabel_t *clabel; 2653 2654 ASSERT(req->rq_label != NULL); 2655 clabel = req->rq_label; 2656 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2657 "got client label from request(1)", struct svc_req *, req); 2658 2659 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2660 if (!do_rfs4_label_check(clabel, vp, DOMINANCE_CHECK)) { 2661 error = EACCES; 2662 goto err_out; 2663 } 2664 } else { 2665 /* 2666 * We grant access to admin_low label clients 2667 * only if the client is trusted, i.e. also 2668 * running Solaris Trusted Extension. 2669 */ 2670 struct sockaddr *ca; 2671 int addr_type; 2672 void *ipaddr; 2673 tsol_tpc_t *tp; 2674 2675 ca = (struct sockaddr *)svc_getrpccaller( 2676 req->rq_xprt)->buf; 2677 if (ca->sa_family == AF_INET) { 2678 addr_type = IPV4_VERSION; 2679 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2680 } else if (ca->sa_family == AF_INET6) { 2681 addr_type = IPV6_VERSION; 2682 ipaddr = &((struct sockaddr_in6 *) 2683 ca)->sin6_addr; 2684 } 2685 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2686 if (tp == NULL || tp->tpc_tp.tp_doi != 2687 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2688 SUN_CIPSO) { 2689 error = EACCES; 2690 goto err_out; 2691 } 2692 } 2693 } 2694 2695 error = makefh4(&cs->fh, vp, cs->exi); 2696 2697 err_out: 2698 if (error) { 2699 if (is_newvp) { 2700 VN_RELE(cs->vp); 2701 cs->vp = oldvp; 2702 } else 2703 VN_RELE(vp); 2704 return (puterrno4(error)); 2705 } 2706 2707 if (!is_newvp) { 2708 if (cs->vp) 2709 VN_RELE(cs->vp); 2710 cs->vp = vp; 2711 } else if (oldvp) 2712 VN_RELE(oldvp); 2713 2714 /* 2715 * if did lookup on attrdir and didn't lookup .., set named 2716 * attr fh flag 2717 */ 2718 if (attrdir && ! dotdot) 2719 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2720 2721 /* Assume false for now, open proc will set this */ 2722 cs->mandlock = FALSE; 2723 2724 return (NFS4_OK); 2725 } 2726 2727 /* ARGSUSED */ 2728 static void 2729 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2730 struct compound_state *cs) 2731 { 2732 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2733 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2734 char *nm; 2735 uint_t len; 2736 2737 if (cs->vp == NULL) { 2738 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2739 return; 2740 } 2741 2742 if (cs->vp->v_type == VLNK) { 2743 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2744 return; 2745 } 2746 2747 if (cs->vp->v_type != VDIR) { 2748 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2749 return; 2750 } 2751 2752 if (!utf8_dir_verify(&args->objname)) { 2753 *cs->statusp = resp->status = NFS4ERR_INVAL; 2754 return; 2755 } 2756 2757 nm = utf8_to_str(&args->objname, &len, NULL); 2758 if (nm == NULL) { 2759 *cs->statusp = resp->status = NFS4ERR_INVAL; 2760 return; 2761 } 2762 2763 if (len > MAXNAMELEN) { 2764 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2765 kmem_free(nm, len); 2766 return; 2767 } 2768 2769 *cs->statusp = resp->status = do_rfs4_op_lookup(nm, len, req, cs); 2770 2771 kmem_free(nm, len); 2772 } 2773 2774 /* ARGSUSED */ 2775 static void 2776 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2777 struct compound_state *cs) 2778 { 2779 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2780 2781 if (cs->vp == NULL) { 2782 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2783 return; 2784 } 2785 2786 if (cs->vp->v_type != VDIR) { 2787 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2788 return; 2789 } 2790 2791 *cs->statusp = resp->status = do_rfs4_op_lookup("..", 3, req, cs); 2792 2793 /* 2794 * From NFSV4 Specification, LOOKUPP should not check for 2795 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2796 */ 2797 if (resp->status == NFS4ERR_WRONGSEC) { 2798 *cs->statusp = resp->status = NFS4_OK; 2799 } 2800 } 2801 2802 2803 /*ARGSUSED2*/ 2804 static void 2805 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2806 struct compound_state *cs) 2807 { 2808 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2809 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2810 vnode_t *avp = NULL; 2811 int lookup_flags = LOOKUP_XATTR, error; 2812 int exp_ro = 0; 2813 2814 if (cs->vp == NULL) { 2815 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2816 return; 2817 } 2818 2819 /* 2820 * Make a couple of checks made by copen() 2821 * 2822 * Check to make sure underlying fs supports xattrs. This 2823 * is required because solaris filesystem implementations 2824 * (UFS/TMPFS) don't enforce the noxattr mount option 2825 * in VOP_LOOKUP(LOOKUP_XATTR). If fs doesn't support this 2826 * pathconf cmd or if fs supports cmd but doesn't claim 2827 * support for xattr, return NOTSUPP. It would be better 2828 * to use VOP_PATHCONF( _PC_XATTR_ENABLED) for this; however, 2829 * that cmd is not available to VOP_PATHCONF interface 2830 * (it's only implemented inside pathconf syscall)... 2831 * 2832 * Verify permission to put attributes on files (access 2833 * checks from copen). 2834 */ 2835 2836 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0) { 2837 error = ENOTSUP; 2838 goto error_out; 2839 } 2840 2841 if ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr) != 0) && 2842 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr) != 0) && 2843 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr) != 0)) { 2844 error = EACCES; 2845 goto error_out; 2846 } 2847 2848 /* 2849 * The CREATE_XATTR_DIR VOP flag cannot be specified if 2850 * the file system is exported read-only -- regardless of 2851 * createdir flag. Otherwise the attrdir would be created 2852 * (assuming server fs isn't mounted readonly locally). If 2853 * VOP_LOOKUP returns ENOENT in this case, the error will 2854 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 2855 * because specfs has no VOP_LOOKUP op, so the macro would 2856 * return ENOSYS. EINVAL is returned by all (current) 2857 * Solaris file system implementations when any of their 2858 * restrictions are violated (xattr(dir) can't have xattrdir). 2859 * Returning NOTSUPP is more appropriate in this case 2860 * because the object will never be able to have an attrdir. 2861 */ 2862 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 2863 lookup_flags |= CREATE_XATTR_DIR; 2864 2865 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr); 2866 2867 if (error) { 2868 if (error == ENOENT && args->createdir && exp_ro) 2869 error = EROFS; 2870 else if (error == EINVAL || error == ENOSYS) 2871 error = ENOTSUP; 2872 goto error_out; 2873 } 2874 2875 ASSERT(avp->v_flag & V_XATTRDIR); 2876 2877 error = makefh4(&cs->fh, avp, cs->exi); 2878 2879 if (error) { 2880 VN_RELE(avp); 2881 goto error_out; 2882 } 2883 2884 VN_RELE(cs->vp); 2885 cs->vp = avp; 2886 2887 /* 2888 * There is no requirement for an attrdir fh flag 2889 * because the attrdir has a vnode flag to distinguish 2890 * it from regular (non-xattr) directories. The 2891 * FH4_ATTRDIR flag is set for future sanity checks. 2892 */ 2893 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 2894 *cs->statusp = resp->status = NFS4_OK; 2895 return; 2896 2897 error_out: 2898 2899 *cs->statusp = resp->status = puterrno4(error); 2900 } 2901 2902 static int 2903 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred) 2904 { 2905 int error; 2906 int i; 2907 clock_t delaytime; 2908 caller_context_t ct; 2909 2910 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 2911 2912 /* 2913 * Don't block on mandatory locks. If this routine returns 2914 * EAGAIN, the caller should return NFS4ERR_LOCKED. 2915 */ 2916 uio->uio_fmode = FNONBLOCK; 2917 2918 ct.cc_sysid = 0; 2919 ct.cc_pid = 0; 2920 ct.cc_caller_id = nfs4_srv_caller_id; 2921 2922 for (i = 0; i < rfs4_maxlock_tries; i++) { 2923 2924 2925 if (direction == FREAD) { 2926 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, &ct); 2927 error = VOP_READ(vp, uio, ioflag, cred, &ct); 2928 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, &ct); 2929 } else { 2930 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, &ct); 2931 error = VOP_WRITE(vp, uio, ioflag, cred, &ct); 2932 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, &ct); 2933 } 2934 2935 if (error != EAGAIN) 2936 break; 2937 2938 if (i < rfs4_maxlock_tries - 1) { 2939 delay(delaytime); 2940 delaytime *= 2; 2941 } 2942 } 2943 2944 return (error); 2945 } 2946 2947 /* ARGSUSED */ 2948 static void 2949 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2950 struct compound_state *cs) 2951 { 2952 READ4args *args = &argop->nfs_argop4_u.opread; 2953 READ4res *resp = &resop->nfs_resop4_u.opread; 2954 int error; 2955 int verror; 2956 vnode_t *vp; 2957 struct vattr va; 2958 struct iovec iov; 2959 struct uio uio; 2960 u_offset_t offset; 2961 bool_t *deleg = &cs->deleg; 2962 nfsstat4 stat; 2963 int in_crit = 0; 2964 mblk_t *mp; 2965 int alloc_err = 0; 2966 2967 vp = cs->vp; 2968 if (vp == NULL) { 2969 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2970 return; 2971 } 2972 if (cs->access == CS_ACCESS_DENIED) { 2973 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2974 return; 2975 } 2976 2977 /* 2978 * Enter the critical region before calling VOP_RWLOCK 2979 * to avoid a deadlock with write requests. 2980 */ 2981 if (nbl_need_check(vp)) { 2982 nbl_start_crit(vp, RW_READER); 2983 in_crit = 1; 2984 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0)) { 2985 *cs->statusp = resp->status = NFS4ERR_LOCKED; 2986 goto out; 2987 } 2988 } 2989 2990 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 2991 deleg, TRUE)) != NFS4_OK) { 2992 *cs->statusp = resp->status = stat; 2993 goto out; 2994 } 2995 2996 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 2997 verror = VOP_GETATTR(vp, &va, 0, cs->cr); 2998 2999 /* 3000 * If we can't get the attributes, then we can't do the 3001 * right access checking. So, we'll fail the request. 3002 */ 3003 if (verror) { 3004 *cs->statusp = resp->status = puterrno4(verror); 3005 goto out; 3006 } 3007 3008 if (vp->v_type != VREG) { 3009 *cs->statusp = resp->status = 3010 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3011 goto out; 3012 } 3013 3014 if (crgetuid(cs->cr) != va.va_uid && 3015 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr)) && 3016 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr))) { 3017 *cs->statusp = resp->status = puterrno4(error); 3018 goto out; 3019 } 3020 3021 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3022 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3023 goto out; 3024 } 3025 3026 offset = args->offset; 3027 if (offset >= va.va_size) { 3028 *cs->statusp = resp->status = NFS4_OK; 3029 resp->eof = TRUE; 3030 resp->data_len = 0; 3031 resp->data_val = NULL; 3032 resp->mblk = NULL; 3033 *cs->statusp = resp->status = NFS4_OK; 3034 goto out; 3035 } 3036 3037 if (args->count == 0) { 3038 *cs->statusp = resp->status = NFS4_OK; 3039 resp->eof = FALSE; 3040 resp->data_len = 0; 3041 resp->data_val = NULL; 3042 resp->mblk = NULL; 3043 goto out; 3044 } 3045 3046 /* 3047 * Do not allocate memory more than maximum allowed 3048 * transfer size 3049 */ 3050 if (args->count > rfs4_tsize(req)) 3051 args->count = rfs4_tsize(req); 3052 3053 /* 3054 * mp will contain the data to be sent out in the read reply. 3055 * It will be freed after the reply has been sent. 3056 * Let's roundup the data to a BYTES_PER_XDR_UNIT multiple, 3057 * so that the call to xdrmblk_putmblk() never fails. 3058 * If the first alloc of the requested size fails, then 3059 * decrease the size to something more reasonable and wait 3060 * for the allocation to occur. 3061 */ 3062 mp = allocb(RNDUP(args->count), BPRI_MED); 3063 if (mp == NULL) { 3064 if (args->count > MAXBSIZE) 3065 args->count = MAXBSIZE; 3066 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3067 STR_NOSIG, &alloc_err); 3068 } 3069 ASSERT(mp != NULL); 3070 ASSERT(alloc_err == 0); 3071 3072 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3073 iov.iov_len = args->count; 3074 uio.uio_iov = &iov; 3075 uio.uio_iovcnt = 1; 3076 uio.uio_segflg = UIO_SYSSPACE; 3077 uio.uio_extflg = UIO_COPY_CACHED; 3078 uio.uio_loffset = args->offset; 3079 uio.uio_resid = args->count; 3080 3081 error = do_io(FREAD, vp, &uio, 0, cs->cr); 3082 3083 va.va_mask = AT_SIZE; 3084 verror = VOP_GETATTR(vp, &va, 0, cs->cr); 3085 3086 if (error) { 3087 freeb(mp); 3088 *cs->statusp = resp->status = puterrno4(error); 3089 goto out; 3090 } 3091 3092 *cs->statusp = resp->status = NFS4_OK; 3093 3094 ASSERT(uio.uio_resid >= 0); 3095 resp->data_len = args->count - uio.uio_resid; 3096 resp->data_val = (char *)mp->b_datap->db_base; 3097 resp->mblk = mp; 3098 3099 if (!verror && offset + resp->data_len == va.va_size) 3100 resp->eof = TRUE; 3101 else 3102 resp->eof = FALSE; 3103 3104 out: 3105 if (in_crit) 3106 nbl_end_crit(vp); 3107 } 3108 3109 static void 3110 rfs4_op_read_free(nfs_resop4 *resop) 3111 { 3112 READ4res *resp = &resop->nfs_resop4_u.opread; 3113 3114 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3115 freeb(resp->mblk); 3116 resp->mblk = NULL; 3117 resp->data_val = NULL; 3118 resp->data_len = 0; 3119 } 3120 } 3121 3122 static void 3123 rfs4_op_readdir_free(nfs_resop4 *resop) 3124 { 3125 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3126 3127 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3128 freeb(resp->mblk); 3129 resp->mblk = NULL; 3130 resp->data_len = 0; 3131 } 3132 } 3133 3134 3135 /* ARGSUSED */ 3136 static void 3137 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3138 struct compound_state *cs) 3139 { 3140 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3141 int error; 3142 vnode_t *vp; 3143 struct exportinfo *exi, *sav_exi; 3144 nfs_fh4_fmt_t *fh_fmtp; 3145 3146 if (cs->vp) { 3147 VN_RELE(cs->vp); 3148 cs->vp = NULL; 3149 } 3150 3151 if (cs->cr) 3152 crfree(cs->cr); 3153 3154 cs->cr = crdup(cs->basecr); 3155 3156 vp = exi_public->exi_vp; 3157 if (vp == NULL) { 3158 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3159 return; 3160 } 3161 3162 error = makefh4(&cs->fh, vp, exi_public); 3163 if (error != 0) { 3164 *cs->statusp = resp->status = puterrno4(error); 3165 return; 3166 } 3167 sav_exi = cs->exi; 3168 if (exi_public == exi_root) { 3169 /* 3170 * No filesystem is actually shared public, so we default 3171 * to exi_root. In this case, we must check whether root 3172 * is exported. 3173 */ 3174 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3175 3176 /* 3177 * if root filesystem is exported, the exportinfo struct that we 3178 * should use is what checkexport4 returns, because root_exi is 3179 * actually a mostly empty struct. 3180 */ 3181 exi = checkexport4(&fh_fmtp->fh4_fsid, 3182 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3183 cs->exi = ((exi != NULL) ? exi : exi_public); 3184 } else { 3185 /* 3186 * it's a properly shared filesystem 3187 */ 3188 cs->exi = exi_public; 3189 } 3190 3191 VN_HOLD(vp); 3192 cs->vp = vp; 3193 3194 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3195 VN_RELE(cs->vp); 3196 cs->vp = NULL; 3197 cs->exi = sav_exi; 3198 return; 3199 } 3200 3201 *cs->statusp = resp->status = NFS4_OK; 3202 } 3203 3204 /* 3205 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3206 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3207 * or joe have restrictive search permissions, then we shouldn't let 3208 * the client get a file handle. This is easy to enforce. However, we 3209 * don't know what security flavor should be used until we resolve the 3210 * path name. Another complication is uid mapping. If root is 3211 * the user, then it will be mapped to the anonymous user by default, 3212 * but we won't know that till we've resolved the path name. And we won't 3213 * know what the anonymous user is. 3214 * Luckily, SECINFO is specified to take a full filename. 3215 * So what we will have to in rfs4_op_lookup is check that flavor of 3216 * the target object matches that of the request, and if root was the 3217 * caller, check for the root= and anon= options, and if necessary, 3218 * repeat the lookup using the right cred_t. But that's not done yet. 3219 */ 3220 /* ARGSUSED */ 3221 static void 3222 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3223 struct compound_state *cs) 3224 { 3225 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3226 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3227 nfs_fh4_fmt_t *fh_fmtp; 3228 3229 if (cs->vp) { 3230 VN_RELE(cs->vp); 3231 cs->vp = NULL; 3232 } 3233 3234 if (cs->cr) { 3235 crfree(cs->cr); 3236 cs->cr = NULL; 3237 } 3238 3239 3240 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3241 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3242 return; 3243 } 3244 3245 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3246 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3247 NULL); 3248 3249 if (cs->exi == NULL) { 3250 *cs->statusp = resp->status = NFS4ERR_STALE; 3251 return; 3252 } 3253 3254 cs->cr = crdup(cs->basecr); 3255 3256 ASSERT(cs->cr != NULL); 3257 3258 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3259 *cs->statusp = resp->status; 3260 return; 3261 } 3262 3263 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3264 VN_RELE(cs->vp); 3265 cs->vp = NULL; 3266 return; 3267 } 3268 3269 nfs_fh4_copy(&args->object, &cs->fh); 3270 *cs->statusp = resp->status = NFS4_OK; 3271 cs->deleg = FALSE; 3272 } 3273 3274 /* ARGSUSED */ 3275 static void 3276 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3277 struct compound_state *cs) 3278 3279 { 3280 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3281 int error; 3282 fid_t fid; 3283 struct exportinfo *exi, *sav_exi; 3284 3285 if (cs->vp) { 3286 VN_RELE(cs->vp); 3287 cs->vp = NULL; 3288 } 3289 3290 if (cs->cr) 3291 crfree(cs->cr); 3292 3293 cs->cr = crdup(cs->basecr); 3294 3295 /* 3296 * Using rootdir, the system root vnode, 3297 * get its fid. 3298 */ 3299 bzero(&fid, sizeof (fid)); 3300 fid.fid_len = MAXFIDSZ; 3301 error = vop_fid_pseudo(rootdir, &fid); 3302 if (error != 0) { 3303 *cs->statusp = resp->status = puterrno4(error); 3304 return; 3305 } 3306 3307 /* 3308 * Then use the root fsid & fid it to find out if it's exported 3309 * 3310 * If the server root isn't exported directly, then 3311 * it should at least be a pseudo export based on 3312 * one or more exports further down in the server's 3313 * file tree. 3314 */ 3315 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3316 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3317 NFS4_DEBUG(rfs4_debug, 3318 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3319 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3320 return; 3321 } 3322 3323 /* 3324 * Now make a filehandle based on the root 3325 * export and root vnode. 3326 */ 3327 error = makefh4(&cs->fh, rootdir, exi); 3328 if (error != 0) { 3329 *cs->statusp = resp->status = puterrno4(error); 3330 return; 3331 } 3332 3333 sav_exi = cs->exi; 3334 cs->exi = exi; 3335 3336 VN_HOLD(rootdir); 3337 cs->vp = rootdir; 3338 3339 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3340 VN_RELE(rootdir); 3341 cs->vp = NULL; 3342 cs->exi = sav_exi; 3343 return; 3344 } 3345 3346 *cs->statusp = resp->status = NFS4_OK; 3347 cs->deleg = FALSE; 3348 } 3349 3350 /* 3351 * A directory entry is a valid nfsv4 entry if 3352 * - it has a non-zero ino 3353 * - it is not a dot or dotdot name 3354 * - it is visible in a pseudo export or in a real export that can 3355 * only have a limited view. 3356 */ 3357 static bool_t 3358 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3359 int *expseudo, int check_visible) 3360 { 3361 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3362 *expseudo = 0; 3363 return (FALSE); 3364 } 3365 3366 if (! check_visible) { 3367 *expseudo = 0; 3368 return (TRUE); 3369 } 3370 3371 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 3372 } 3373 3374 /* 3375 * set_rdattr_params sets up the variables used to manage what information 3376 * to get for each directory entry. 3377 */ 3378 static nfsstat4 3379 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3380 bitmap4 attrs, bool_t *need_to_lookup) 3381 { 3382 uint_t va_mask; 3383 nfsstat4 status; 3384 bitmap4 objbits; 3385 3386 status = bitmap4_to_attrmask(attrs, sargp); 3387 if (status != NFS4_OK) { 3388 /* 3389 * could not even figure attr mask 3390 */ 3391 return (status); 3392 } 3393 va_mask = sargp->vap->va_mask; 3394 3395 /* 3396 * dirent's d_ino is always correct value for mounted_on_fileid. 3397 * mntdfid_set is set once here, but mounted_on_fileid is 3398 * set in main dirent processing loop for each dirent. 3399 * The mntdfid_set is a simple optimization that lets the 3400 * server attr code avoid work when caller is readdir. 3401 */ 3402 sargp->mntdfid_set = TRUE; 3403 3404 /* 3405 * Lookup entry only if client asked for any of the following: 3406 * a) vattr attrs 3407 * b) vfs attrs 3408 * c) attrs w/per-object scope requested (change, filehandle, etc) 3409 * other than mounted_on_fileid (which we can take from dirent) 3410 */ 3411 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3412 3413 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3414 *need_to_lookup = TRUE; 3415 else 3416 *need_to_lookup = FALSE; 3417 3418 if (sargp->sbp == NULL) 3419 return (NFS4_OK); 3420 3421 /* 3422 * If filesystem attrs are requested, get them now from the 3423 * directory vp, as most entries will have same filesystem. The only 3424 * exception are mounted over entries but we handle 3425 * those as we go (XXX mounted over detection not yet implemented). 3426 */ 3427 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3428 status = bitmap4_get_sysattrs(sargp); 3429 sargp->vap->va_mask = va_mask; 3430 3431 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3432 /* 3433 * Failed to get filesystem attributes. 3434 * Return a rdattr_error for each entry, but don't fail. 3435 * However, don't get any obj-dependent attrs. 3436 */ 3437 sargp->rdattr_error = status; /* for rdattr_error */ 3438 *need_to_lookup = FALSE; 3439 /* 3440 * At least get fileid for regular readdir output 3441 */ 3442 sargp->vap->va_mask &= AT_NODEID; 3443 status = NFS4_OK; 3444 } 3445 3446 return (status); 3447 } 3448 3449 /* 3450 * readlink: args: CURRENT_FH. 3451 * res: status. If success - CURRENT_FH unchanged, return linktext. 3452 */ 3453 3454 /* ARGSUSED */ 3455 static void 3456 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3457 struct compound_state *cs) 3458 { 3459 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3460 int error; 3461 vnode_t *vp; 3462 struct iovec iov; 3463 struct vattr va; 3464 struct uio uio; 3465 char *data; 3466 3467 /* CURRENT_FH: directory */ 3468 vp = cs->vp; 3469 if (vp == NULL) { 3470 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3471 return; 3472 } 3473 3474 if (cs->access == CS_ACCESS_DENIED) { 3475 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3476 return; 3477 } 3478 3479 if (vp->v_type == VDIR) { 3480 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3481 return; 3482 } 3483 3484 if (vp->v_type != VLNK) { 3485 *cs->statusp = resp->status = NFS4ERR_INVAL; 3486 return; 3487 } 3488 3489 va.va_mask = AT_MODE; 3490 error = VOP_GETATTR(vp, &va, 0, cs->cr); 3491 if (error) { 3492 *cs->statusp = resp->status = puterrno4(error); 3493 return; 3494 } 3495 3496 if (MANDLOCK(vp, va.va_mode)) { 3497 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3498 return; 3499 } 3500 3501 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3502 3503 iov.iov_base = data; 3504 iov.iov_len = MAXPATHLEN; 3505 uio.uio_iov = &iov; 3506 uio.uio_iovcnt = 1; 3507 uio.uio_segflg = UIO_SYSSPACE; 3508 uio.uio_extflg = UIO_COPY_CACHED; 3509 uio.uio_loffset = 0; 3510 uio.uio_resid = MAXPATHLEN; 3511 3512 error = VOP_READLINK(vp, &uio, cs->cr); 3513 3514 if (error) { 3515 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3516 *cs->statusp = resp->status = puterrno4(error); 3517 return; 3518 } 3519 3520 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3521 3522 /* 3523 * treat link name as data 3524 */ 3525 (void) str_to_utf8(data, &resp->link); 3526 3527 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3528 *cs->statusp = resp->status = NFS4_OK; 3529 } 3530 3531 static void 3532 rfs4_op_readlink_free(nfs_resop4 *resop) 3533 { 3534 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3535 utf8string *symlink = &resp->link; 3536 3537 if (symlink->utf8string_val) { 3538 UTF8STRING_FREE(*symlink) 3539 } 3540 } 3541 3542 /* 3543 * release_lockowner: 3544 * Release any state associated with the supplied 3545 * lockowner. Note if any lo_state is holding locks we will not 3546 * rele that lo_state and thus the lockowner will not be destroyed. 3547 * A client using lock after the lock owner stateid has been released 3548 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3549 * to reissue the lock with new_lock_owner set to TRUE. 3550 * args: lock_owner 3551 * res: status 3552 */ 3553 /* ARGSUSED */ 3554 static void 3555 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3556 struct svc_req *req, struct compound_state *cs) 3557 { 3558 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3559 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3560 rfs4_lockowner_t *lo; 3561 rfs4_openowner_t *oop; 3562 rfs4_state_t *sp; 3563 rfs4_lo_state_t *lsp; 3564 rfs4_client_t *cp; 3565 bool_t create = FALSE; 3566 locklist_t *llist; 3567 sysid_t sysid; 3568 3569 /* Make sure there is a clientid around for this request */ 3570 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3571 3572 if (cp == NULL) { 3573 *cs->statusp = resp->status = 3574 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3575 return; 3576 } 3577 rfs4_client_rele(cp); 3578 3579 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3580 if (lo == NULL) { 3581 *cs->statusp = resp->status = NFS4_OK; 3582 return; 3583 } 3584 ASSERT(lo->client != NULL); 3585 3586 /* 3587 * Check for EXPIRED client. If so will reap state with in a lease 3588 * period or on next set_clientid_confirm step 3589 */ 3590 if (rfs4_lease_expired(lo->client)) { 3591 rfs4_lockowner_rele(lo); 3592 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3593 return; 3594 } 3595 3596 /* 3597 * If no sysid has been assigned, then no locks exist; just return. 3598 */ 3599 rfs4_dbe_lock(lo->client->dbe); 3600 if (lo->client->sysidt == LM_NOSYSID) { 3601 rfs4_lockowner_rele(lo); 3602 rfs4_dbe_unlock(lo->client->dbe); 3603 return; 3604 } 3605 3606 sysid = lo->client->sysidt; 3607 rfs4_dbe_unlock(lo->client->dbe); 3608 3609 /* 3610 * Mark the lockowner invalid. 3611 */ 3612 rfs4_dbe_hide(lo->dbe); 3613 3614 /* 3615 * sysid-pid pair should now not be used since the lockowner is 3616 * invalid. If the client were to instantiate the lockowner again 3617 * it would be assigned a new pid. Thus we can get the list of 3618 * current locks. 3619 */ 3620 3621 llist = flk_get_active_locks(sysid, lo->pid); 3622 /* If we are still holding locks fail */ 3623 if (llist != NULL) { 3624 3625 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3626 3627 flk_free_locklist(llist); 3628 /* 3629 * We need to unhide the lockowner so the client can 3630 * try it again. The bad thing here is if the client 3631 * has a logic error that took it here in the first place 3632 * he probably has lost accounting of the locks that it 3633 * is holding. So we may have dangling state until the 3634 * open owner state is reaped via close. One scenario 3635 * that could possibly occur is that the client has 3636 * sent the unlock request(s) in separate threads 3637 * and has not waited for the replies before sending the 3638 * RELEASE_LOCKOWNER request. Presumably, it would expect 3639 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3640 * reissuing the request. 3641 */ 3642 rfs4_dbe_unhide(lo->dbe); 3643 rfs4_lockowner_rele(lo); 3644 return; 3645 } 3646 3647 /* 3648 * For the corresponding client we need to check each open 3649 * owner for any opens that have lockowner state associated 3650 * with this lockowner. 3651 */ 3652 3653 rfs4_dbe_lock(lo->client->dbe); 3654 for (oop = lo->client->openownerlist.next->oop; oop != NULL; 3655 oop = oop->openownerlist.next->oop) { 3656 3657 rfs4_dbe_lock(oop->dbe); 3658 for (sp = oop->ownerstateids.next->sp; sp != NULL; 3659 sp = sp->ownerstateids.next->sp) { 3660 3661 rfs4_dbe_lock(sp->dbe); 3662 for (lsp = sp->lockownerlist.next->lsp; 3663 lsp != NULL; lsp = lsp->lockownerlist.next->lsp) { 3664 if (lsp->locker == lo) { 3665 rfs4_dbe_lock(lsp->dbe); 3666 rfs4_dbe_invalidate(lsp->dbe); 3667 rfs4_dbe_unlock(lsp->dbe); 3668 } 3669 } 3670 rfs4_dbe_unlock(sp->dbe); 3671 } 3672 rfs4_dbe_unlock(oop->dbe); 3673 } 3674 rfs4_dbe_unlock(lo->client->dbe); 3675 3676 rfs4_lockowner_rele(lo); 3677 3678 *cs->statusp = resp->status = NFS4_OK; 3679 } 3680 3681 /* 3682 * short utility function to lookup a file and recall the delegation 3683 */ 3684 static rfs4_file_t * 3685 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 3686 int *lkup_error, cred_t *cr) 3687 { 3688 vnode_t *vp; 3689 rfs4_file_t *fp = NULL; 3690 bool_t fcreate = FALSE; 3691 int error; 3692 3693 if (vpp) 3694 *vpp = NULL; 3695 3696 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr)) == 0) { 3697 if (vp->v_type == VREG) 3698 fp = rfs4_findfile(vp, NULL, &fcreate); 3699 if (vpp) 3700 *vpp = vp; 3701 else 3702 VN_RELE(vp); 3703 } 3704 3705 if (lkup_error) 3706 *lkup_error = error; 3707 3708 return (fp); 3709 } 3710 3711 /* 3712 * remove: args: CURRENT_FH: directory; name. 3713 * res: status. If success - CURRENT_FH unchanged, return change_info 3714 * for directory. 3715 */ 3716 /* ARGSUSED */ 3717 static void 3718 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3719 struct compound_state *cs) 3720 { 3721 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 3722 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 3723 int error; 3724 vnode_t *dvp, *vp; 3725 struct vattr bdva, idva, adva; 3726 char *nm; 3727 uint_t len; 3728 rfs4_file_t *fp; 3729 int in_crit = 0; 3730 bslabel_t *clabel; 3731 3732 /* CURRENT_FH: directory */ 3733 dvp = cs->vp; 3734 if (dvp == NULL) { 3735 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3736 return; 3737 } 3738 3739 if (cs->access == CS_ACCESS_DENIED) { 3740 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3741 return; 3742 } 3743 3744 /* 3745 * If there is an unshared filesystem mounted on this vnode, 3746 * Do not allow to remove anything in this directory. 3747 */ 3748 if (vn_ismntpt(dvp)) { 3749 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3750 return; 3751 } 3752 3753 if (dvp->v_type != VDIR) { 3754 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3755 return; 3756 } 3757 3758 if (!utf8_dir_verify(&args->target)) { 3759 *cs->statusp = resp->status = NFS4ERR_INVAL; 3760 return; 3761 } 3762 3763 /* 3764 * Lookup the file so that we can check if it's a directory 3765 */ 3766 nm = utf8_to_fn(&args->target, &len, NULL); 3767 if (nm == NULL) { 3768 *cs->statusp = resp->status = NFS4ERR_INVAL; 3769 return; 3770 } 3771 3772 if (len > MAXNAMELEN) { 3773 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 3774 kmem_free(nm, len); 3775 return; 3776 } 3777 3778 if (rdonly4(cs->exi, cs->vp, req)) { 3779 *cs->statusp = resp->status = NFS4ERR_ROFS; 3780 kmem_free(nm, len); 3781 return; 3782 } 3783 3784 /* 3785 * Lookup the file to determine type and while we are see if 3786 * there is a file struct around and check for delegation. 3787 * We don't need to acquire va_seq before this lookup, if 3788 * it causes an update, cinfo.before will not match, which will 3789 * trigger a cache flush even if atomic is TRUE. 3790 */ 3791 if (fp = rfs4_lookup_and_findfile(dvp, nm, &vp, &error, cs->cr)) { 3792 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 3793 NULL)) { 3794 VN_RELE(vp); 3795 rfs4_file_rele(fp); 3796 *cs->statusp = resp->status = NFS4ERR_DELAY; 3797 kmem_free(nm, len); 3798 return; 3799 } 3800 } 3801 3802 /* Didn't find anything to remove */ 3803 if (vp == NULL) { 3804 *cs->statusp = resp->status = error; 3805 kmem_free(nm, len); 3806 return; 3807 } 3808 3809 if (nbl_need_check(vp)) { 3810 nbl_start_crit(vp, RW_READER); 3811 in_crit = 1; 3812 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0)) { 3813 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 3814 kmem_free(nm, len); 3815 nbl_end_crit(vp); 3816 VN_RELE(vp); 3817 if (fp) { 3818 rfs4_clear_dont_grant(fp); 3819 rfs4_file_rele(fp); 3820 } 3821 return; 3822 } 3823 } 3824 3825 /* check label before allowing removal */ 3826 if (is_system_labeled()) { 3827 ASSERT(req->rq_label != NULL); 3828 clabel = req->rq_label; 3829 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 3830 "got client label from request(1)", 3831 struct svc_req *, req); 3832 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3833 if (!do_rfs4_label_check(clabel, vp, EQUALITY_CHECK)) { 3834 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3835 kmem_free(nm, len); 3836 if (in_crit) 3837 nbl_end_crit(vp); 3838 VN_RELE(vp); 3839 if (fp) { 3840 rfs4_clear_dont_grant(fp); 3841 rfs4_file_rele(fp); 3842 } 3843 return; 3844 } 3845 } 3846 } 3847 3848 /* Get dir "before" change value */ 3849 bdva.va_mask = AT_CTIME|AT_SEQ; 3850 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr); 3851 if (error) { 3852 *cs->statusp = resp->status = puterrno4(error); 3853 kmem_free(nm, len); 3854 return; 3855 } 3856 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 3857 3858 /* Actually do the REMOVE operation */ 3859 if (vp->v_type == VDIR) { 3860 /* 3861 * Can't remove a directory that has a mounted-on filesystem. 3862 */ 3863 if (vn_ismntpt(vp)) { 3864 error = EACCES; 3865 } else { 3866 /* 3867 * System V defines rmdir to return EEXIST, 3868 * not * ENOTEMPTY, if the directory is not 3869 * empty. A System V NFS server needs to map 3870 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 3871 * transmit over the wire. 3872 */ 3873 if ((error = VOP_RMDIR(dvp, nm, rootdir, cs->cr)) 3874 == EEXIST) 3875 error = ENOTEMPTY; 3876 } 3877 } else { 3878 if ((error = VOP_REMOVE(dvp, nm, cs->cr)) == 0 && 3879 fp != NULL) { 3880 struct vattr va; 3881 vnode_t *tvp; 3882 3883 rfs4_dbe_lock(fp->dbe); 3884 tvp = fp->vp; 3885 if (tvp) 3886 VN_HOLD(tvp); 3887 rfs4_dbe_unlock(fp->dbe); 3888 3889 if (tvp) { 3890 /* 3891 * This is va_seq safe because we are not 3892 * manipulating dvp. 3893 */ 3894 va.va_mask = AT_NLINK; 3895 if (!VOP_GETATTR(tvp, &va, 0, cs->cr) && 3896 va.va_nlink == 0) { 3897 /* Remove state on file remove */ 3898 if (in_crit) { 3899 nbl_end_crit(vp); 3900 in_crit = 0; 3901 } 3902 rfs4_close_all_state(fp); 3903 } 3904 VN_RELE(tvp); 3905 } 3906 } 3907 } 3908 3909 if (in_crit) 3910 nbl_end_crit(vp); 3911 VN_RELE(vp); 3912 3913 if (fp) { 3914 rfs4_clear_dont_grant(fp); 3915 rfs4_file_rele(fp); 3916 } 3917 kmem_free(nm, len); 3918 3919 if (error) { 3920 *cs->statusp = resp->status = puterrno4(error); 3921 return; 3922 } 3923 3924 /* 3925 * Get the initial "after" sequence number, if it fails, set to zero 3926 */ 3927 idva.va_mask = AT_SEQ; 3928 if (VOP_GETATTR(dvp, &idva, 0, cs->cr)) 3929 idva.va_seq = 0; 3930 3931 /* 3932 * Force modified data and metadata out to stable storage. 3933 */ 3934 (void) VOP_FSYNC(dvp, 0, cs->cr); 3935 3936 /* 3937 * Get "after" change value, if it fails, simply return the 3938 * before value. 3939 */ 3940 adva.va_mask = AT_CTIME|AT_SEQ; 3941 if (VOP_GETATTR(dvp, &adva, 0, cs->cr)) { 3942 adva.va_ctime = bdva.va_ctime; 3943 adva.va_seq = 0; 3944 } 3945 3946 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 3947 3948 /* 3949 * The cinfo.atomic = TRUE only if we have 3950 * non-zero va_seq's, and it has incremented by exactly one 3951 * during the VOP_REMOVE/RMDIR and it didn't change during 3952 * the VOP_FSYNC. 3953 */ 3954 if (bdva.va_seq && idva.va_seq && adva.va_seq && 3955 idva.va_seq == (bdva.va_seq + 1) && 3956 idva.va_seq == adva.va_seq) 3957 resp->cinfo.atomic = TRUE; 3958 else 3959 resp->cinfo.atomic = FALSE; 3960 3961 *cs->statusp = resp->status = NFS4_OK; 3962 } 3963 3964 /* 3965 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 3966 * oldname and newname. 3967 * res: status. If success - CURRENT_FH unchanged, return change_info 3968 * for both from and target directories. 3969 */ 3970 /* ARGSUSED */ 3971 static void 3972 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3973 struct compound_state *cs) 3974 { 3975 RENAME4args *args = &argop->nfs_argop4_u.oprename; 3976 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 3977 int error; 3978 vnode_t *odvp; 3979 vnode_t *ndvp; 3980 vnode_t *srcvp, *targvp; 3981 struct vattr obdva, oidva, oadva; 3982 struct vattr nbdva, nidva, nadva; 3983 char *onm, *nnm; 3984 uint_t olen, nlen; 3985 rfs4_file_t *fp, *sfp; 3986 int in_crit_src, in_crit_targ; 3987 int fp_rele_grant_hold, sfp_rele_grant_hold; 3988 bslabel_t *clabel; 3989 3990 fp = sfp = NULL; 3991 srcvp = targvp = NULL; 3992 in_crit_src = in_crit_targ = 0; 3993 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 3994 3995 /* CURRENT_FH: target directory */ 3996 ndvp = cs->vp; 3997 if (ndvp == NULL) { 3998 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3999 return; 4000 } 4001 4002 /* SAVED_FH: from directory */ 4003 odvp = cs->saved_vp; 4004 if (odvp == NULL) { 4005 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4006 return; 4007 } 4008 4009 if (cs->access == CS_ACCESS_DENIED) { 4010 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4011 return; 4012 } 4013 4014 /* 4015 * If there is an unshared filesystem mounted on this vnode, 4016 * do not allow to rename objects in this directory. 4017 */ 4018 if (vn_ismntpt(odvp)) { 4019 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4020 return; 4021 } 4022 4023 /* 4024 * If there is an unshared filesystem mounted on this vnode, 4025 * do not allow to rename to this directory. 4026 */ 4027 if (vn_ismntpt(ndvp)) { 4028 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4029 return; 4030 } 4031 4032 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4033 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4034 return; 4035 } 4036 4037 if (cs->saved_exi != cs->exi) { 4038 *cs->statusp = resp->status = NFS4ERR_XDEV; 4039 return; 4040 } 4041 4042 if (!utf8_dir_verify(&args->oldname)) { 4043 *cs->statusp = resp->status = NFS4ERR_INVAL; 4044 return; 4045 } 4046 4047 if (!utf8_dir_verify(&args->newname)) { 4048 *cs->statusp = resp->status = NFS4ERR_INVAL; 4049 return; 4050 } 4051 4052 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4053 if (onm == NULL) { 4054 *cs->statusp = resp->status = NFS4ERR_INVAL; 4055 return; 4056 } 4057 4058 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4059 if (nnm == NULL) { 4060 *cs->statusp = resp->status = NFS4ERR_INVAL; 4061 kmem_free(onm, olen); 4062 return; 4063 } 4064 4065 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4066 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4067 kmem_free(onm, olen); 4068 kmem_free(nnm, nlen); 4069 return; 4070 } 4071 4072 4073 if (rdonly4(cs->exi, cs->vp, req)) { 4074 *cs->statusp = resp->status = NFS4ERR_ROFS; 4075 kmem_free(onm, olen); 4076 kmem_free(nnm, nlen); 4077 return; 4078 } 4079 4080 /* check label of the target dir */ 4081 if (is_system_labeled()) { 4082 ASSERT(req->rq_label != NULL); 4083 clabel = req->rq_label; 4084 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4085 "got client label from request(1)", 4086 struct svc_req *, req); 4087 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4088 if (!do_rfs4_label_check(clabel, ndvp, 4089 EQUALITY_CHECK)) { 4090 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4091 return; 4092 } 4093 } 4094 } 4095 4096 /* 4097 * Is the source a file and have a delegation? 4098 * We don't need to acquire va_seq before these lookups, if 4099 * it causes an update, cinfo.before will not match, which will 4100 * trigger a cache flush even if atomic is TRUE. 4101 */ 4102 if (sfp = rfs4_lookup_and_findfile(odvp, onm, &srcvp, &error, cs->cr)) { 4103 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4104 NULL)) { 4105 *cs->statusp = resp->status = NFS4ERR_DELAY; 4106 goto err_out; 4107 } 4108 } 4109 4110 if (srcvp == NULL) { 4111 *cs->statusp = resp->status = puterrno4(error); 4112 kmem_free(onm, olen); 4113 kmem_free(nnm, nlen); 4114 return; 4115 } 4116 4117 sfp_rele_grant_hold = 1; 4118 4119 /* Does the destination exist and a file and have a delegation? */ 4120 if (fp = rfs4_lookup_and_findfile(ndvp, nnm, &targvp, NULL, cs->cr)) { 4121 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4122 NULL)) { 4123 *cs->statusp = resp->status = NFS4ERR_DELAY; 4124 goto err_out; 4125 } 4126 } 4127 fp_rele_grant_hold = 1; 4128 4129 4130 /* Check for NBMAND lock on both source and target */ 4131 if (nbl_need_check(srcvp)) { 4132 nbl_start_crit(srcvp, RW_READER); 4133 in_crit_src = 1; 4134 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0)) { 4135 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4136 goto err_out; 4137 } 4138 } 4139 4140 if (targvp && nbl_need_check(targvp)) { 4141 nbl_start_crit(targvp, RW_READER); 4142 in_crit_targ = 1; 4143 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0)) { 4144 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4145 goto err_out; 4146 } 4147 } 4148 4149 /* Get source "before" change value */ 4150 obdva.va_mask = AT_CTIME|AT_SEQ; 4151 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr); 4152 if (!error) { 4153 nbdva.va_mask = AT_CTIME|AT_SEQ; 4154 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr); 4155 } 4156 if (error) { 4157 *cs->statusp = resp->status = puterrno4(error); 4158 goto err_out; 4159 } 4160 4161 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4162 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4163 4164 if ((error = VOP_RENAME(odvp, onm, ndvp, nnm, cs->cr)) == 0 && 4165 fp != NULL) { 4166 struct vattr va; 4167 vnode_t *tvp; 4168 4169 rfs4_dbe_lock(fp->dbe); 4170 tvp = fp->vp; 4171 if (tvp) 4172 VN_HOLD(tvp); 4173 rfs4_dbe_unlock(fp->dbe); 4174 4175 if (tvp) { 4176 va.va_mask = AT_NLINK; 4177 if (!VOP_GETATTR(tvp, &va, 0, cs->cr) && 4178 va.va_nlink == 0) { 4179 /* The file is gone and so should the state */ 4180 if (in_crit_targ) { 4181 nbl_end_crit(targvp); 4182 in_crit_targ = 0; 4183 } 4184 rfs4_close_all_state(fp); 4185 } 4186 VN_RELE(tvp); 4187 } 4188 } 4189 if (error == 0) { 4190 char *tmp; 4191 4192 /* fix the path name for the renamed file */ 4193 mutex_enter(&srcvp->v_lock); 4194 tmp = srcvp->v_path; 4195 srcvp->v_path = NULL; 4196 mutex_exit(&srcvp->v_lock); 4197 vn_setpath(rootdir, ndvp, srcvp, nnm, nlen - 1); 4198 if (tmp != NULL) 4199 kmem_free(tmp, strlen(tmp) + 1); 4200 } 4201 4202 if (in_crit_src) 4203 nbl_end_crit(srcvp); 4204 if (srcvp) 4205 VN_RELE(srcvp); 4206 if (in_crit_targ) 4207 nbl_end_crit(targvp); 4208 if (targvp) 4209 VN_RELE(targvp); 4210 4211 if (sfp) { 4212 rfs4_clear_dont_grant(sfp); 4213 rfs4_file_rele(sfp); 4214 } 4215 if (fp) { 4216 rfs4_clear_dont_grant(fp); 4217 rfs4_file_rele(fp); 4218 } 4219 4220 kmem_free(onm, olen); 4221 kmem_free(nnm, nlen); 4222 4223 /* 4224 * Get the initial "after" sequence number, if it fails, set to zero 4225 */ 4226 oidva.va_mask = AT_SEQ; 4227 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr)) 4228 oidva.va_seq = 0; 4229 4230 nidva.va_mask = AT_SEQ; 4231 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr)) 4232 nidva.va_seq = 0; 4233 4234 /* 4235 * Force modified data and metadata out to stable storage. 4236 */ 4237 (void) VOP_FSYNC(odvp, 0, cs->cr); 4238 (void) VOP_FSYNC(ndvp, 0, cs->cr); 4239 4240 if (error) { 4241 *cs->statusp = resp->status = puterrno4(error); 4242 return; 4243 } 4244 4245 /* 4246 * Get "after" change values, if it fails, simply return the 4247 * before value. 4248 */ 4249 oadva.va_mask = AT_CTIME|AT_SEQ; 4250 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr)) { 4251 oadva.va_ctime = obdva.va_ctime; 4252 oadva.va_seq = 0; 4253 } 4254 4255 nadva.va_mask = AT_CTIME|AT_SEQ; 4256 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr)) { 4257 nadva.va_ctime = nbdva.va_ctime; 4258 nadva.va_seq = 0; 4259 } 4260 4261 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4262 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4263 4264 /* 4265 * The cinfo.atomic = TRUE only if we have 4266 * non-zero va_seq's, and it has incremented by exactly one 4267 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4268 */ 4269 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4270 oidva.va_seq == (obdva.va_seq + 1) && 4271 oidva.va_seq == oadva.va_seq) 4272 resp->source_cinfo.atomic = TRUE; 4273 else 4274 resp->source_cinfo.atomic = FALSE; 4275 4276 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4277 nidva.va_seq == (nbdva.va_seq + 1) && 4278 nidva.va_seq == nadva.va_seq) 4279 resp->target_cinfo.atomic = TRUE; 4280 else 4281 resp->target_cinfo.atomic = FALSE; 4282 4283 #ifdef VOLATILE_FH_TEST 4284 { 4285 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4286 4287 /* 4288 * Add the renamed file handle to the volatile rename list 4289 */ 4290 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4291 /* file handles may expire on rename */ 4292 vnode_t *vp; 4293 4294 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4295 /* 4296 * Already know that nnm will be a valid string 4297 */ 4298 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr); 4299 kmem_free(nnm, nlen); 4300 if (!error) { 4301 add_volrnm_fh(cs->exi, vp); 4302 VN_RELE(vp); 4303 } 4304 } 4305 } 4306 #endif /* VOLATILE_FH_TEST */ 4307 4308 *cs->statusp = resp->status = NFS4_OK; 4309 return; 4310 4311 err_out: 4312 kmem_free(onm, olen); 4313 kmem_free(nnm, nlen); 4314 4315 if (in_crit_src) nbl_end_crit(srcvp); 4316 if (in_crit_targ) nbl_end_crit(targvp); 4317 if (targvp) VN_RELE(targvp); 4318 if (srcvp) VN_RELE(srcvp); 4319 if (sfp) { 4320 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4321 rfs4_file_rele(sfp); 4322 } 4323 if (fp) { 4324 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4325 rfs4_file_rele(fp); 4326 } 4327 } 4328 4329 /* ARGSUSED */ 4330 static void 4331 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4332 struct compound_state *cs) 4333 { 4334 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4335 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4336 rfs4_client_t *cp; 4337 4338 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4339 *cs->statusp = resp->status = 4340 rfs4_check_clientid(&args->clientid, 0); 4341 return; 4342 } 4343 4344 if (rfs4_lease_expired(cp)) { 4345 rfs4_client_rele(cp); 4346 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4347 return; 4348 } 4349 4350 rfs4_update_lease(cp); 4351 4352 mutex_enter(cp->cbinfo.cb_lock); 4353 if (cp->cbinfo.cb_notified_of_cb_path_down == FALSE) { 4354 cp->cbinfo.cb_notified_of_cb_path_down = TRUE; 4355 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4356 } else { 4357 *cs->statusp = resp->status = NFS4_OK; 4358 } 4359 mutex_exit(cp->cbinfo.cb_lock); 4360 4361 rfs4_client_rele(cp); 4362 4363 } 4364 4365 /* ARGSUSED */ 4366 static void 4367 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4368 struct compound_state *cs) 4369 { 4370 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4371 4372 /* No need to check cs->access - we are not accessing any object */ 4373 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4374 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4375 return; 4376 } 4377 if (cs->vp != NULL) { 4378 VN_RELE(cs->vp); 4379 } 4380 cs->vp = cs->saved_vp; 4381 cs->saved_vp = NULL; 4382 cs->exi = cs->saved_exi; 4383 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4384 *cs->statusp = resp->status = NFS4_OK; 4385 cs->deleg = FALSE; 4386 } 4387 4388 /* ARGSUSED */ 4389 static void 4390 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4391 struct compound_state *cs) 4392 { 4393 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4394 4395 /* No need to check cs->access - we are not accessing any object */ 4396 if (cs->vp == NULL) { 4397 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4398 return; 4399 } 4400 if (cs->saved_vp != NULL) { 4401 VN_RELE(cs->saved_vp); 4402 } 4403 cs->saved_vp = cs->vp; 4404 VN_HOLD(cs->saved_vp); 4405 cs->saved_exi = cs->exi; 4406 /* 4407 * since SAVEFH is fairly rare, don't alloc space for its fh 4408 * unless necessary. 4409 */ 4410 if (cs->saved_fh.nfs_fh4_val == NULL) { 4411 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4412 } 4413 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4414 *cs->statusp = resp->status = NFS4_OK; 4415 } 4416 4417 /* 4418 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4419 * return the bitmap of attrs that were set successfully. It is also 4420 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4421 * always be called only after rfs4_do_set_attrs(). 4422 * 4423 * Verify that the attributes are same as the expected ones. sargp->vap 4424 * and sargp->sbp contain the input attributes as translated from fattr4. 4425 * 4426 * This function verifies only the attrs that correspond to a vattr or 4427 * vfsstat struct. That is because of the extra step needed to get the 4428 * corresponding system structs. Other attributes have already been set or 4429 * verified by do_rfs4_set_attrs. 4430 * 4431 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4432 */ 4433 static int 4434 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4435 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4436 { 4437 int error, ret_error = 0; 4438 int i, k; 4439 uint_t sva_mask = sargp->vap->va_mask; 4440 uint_t vbit; 4441 union nfs4_attr_u *na; 4442 uint8_t *amap; 4443 bool_t getsb = ntovp->vfsstat; 4444 4445 if (sva_mask != 0) { 4446 /* 4447 * Okay to overwrite sargp->vap because we verify based 4448 * on the incoming values. 4449 */ 4450 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4451 sargp->cs->cr); 4452 if (ret_error) { 4453 if (resp == NULL) 4454 return (ret_error); 4455 /* 4456 * Must return bitmap of successful attrs 4457 */ 4458 sva_mask = 0; /* to prevent checking vap later */ 4459 } else { 4460 /* 4461 * Some file systems clobber va_mask. it is probably 4462 * wrong of them to do so, nonethless we practice 4463 * defensive coding. 4464 * See bug id 4276830. 4465 */ 4466 sargp->vap->va_mask = sva_mask; 4467 } 4468 } 4469 4470 if (getsb) { 4471 /* 4472 * Now get the superblock and loop on the bitmap, as there is 4473 * no simple way of translating from superblock to bitmap4. 4474 */ 4475 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4476 if (ret_error) { 4477 if (resp == NULL) 4478 goto errout; 4479 getsb = FALSE; 4480 } 4481 } 4482 4483 /* 4484 * Now loop and verify each attribute which getattr returned 4485 * whether it's the same as the input. 4486 */ 4487 if (resp == NULL && !getsb && (sva_mask == 0)) 4488 goto errout; 4489 4490 na = ntovp->na; 4491 amap = ntovp->amap; 4492 k = 0; 4493 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4494 k = *amap; 4495 ASSERT(nfs4_ntov_map[k].nval == k); 4496 vbit = nfs4_ntov_map[k].vbit; 4497 4498 /* 4499 * If vattr attribute but VOP_GETATTR failed, or it's 4500 * superblock attribute but VFS_STATVFS failed, skip 4501 */ 4502 if (vbit) { 4503 if ((vbit & sva_mask) == 0) 4504 continue; 4505 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4506 continue; 4507 } 4508 error = (*nfs4_ntov_map[k].sv_getit)( 4509 NFS4ATTR_VERIT, sargp, na); 4510 if (resp != NULL) { 4511 if (error) 4512 ret_error = -1; /* not all match */ 4513 else /* update response bitmap */ 4514 *resp |= nfs4_ntov_map[k].fbit; 4515 continue; 4516 } 4517 if (error) { 4518 ret_error = -1; /* not all match */ 4519 break; 4520 } 4521 } 4522 errout: 4523 return (ret_error); 4524 } 4525 4526 /* 4527 * Decode the attribute to be set/verified. If the attr requires a sys op 4528 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4529 * call the sv_getit function for it, because the sys op hasn't yet been done. 4530 * Return 0 for success, error code if failed. 4531 * 4532 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 4533 */ 4534 static int 4535 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 4536 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 4537 { 4538 int error = 0; 4539 bool_t set_later; 4540 4541 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 4542 4543 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 4544 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 4545 /* 4546 * don't verify yet if a vattr or sb dependent attr, 4547 * because we don't have their sys values yet. 4548 * Will be done later. 4549 */ 4550 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 4551 /* 4552 * ACLs are a special case, since setting the MODE 4553 * conflicts with setting the ACL. We delay setting 4554 * the ACL until all other attributes have been set. 4555 * The ACL gets set in do_rfs4_op_setattr(). 4556 */ 4557 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 4558 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 4559 sargp, nap); 4560 if (error) { 4561 xdr_free(nfs4_ntov_map[k].xfunc, 4562 (caddr_t)nap); 4563 } 4564 } 4565 } 4566 } else { 4567 #ifdef DEBUG 4568 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 4569 "decoding attribute %d\n", k); 4570 #endif 4571 error = EINVAL; 4572 } 4573 if (!error && resp_bval && !set_later) { 4574 *resp_bval |= nfs4_ntov_map[k].fbit; 4575 } 4576 4577 return (error); 4578 } 4579 4580 /* 4581 * Set vattr based on incoming fattr4 attrs - used by setattr. 4582 * Set response mask. Ignore any values that are not writable vattr attrs. 4583 */ 4584 static nfsstat4 4585 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4586 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 4587 nfs4_attr_cmd_t cmd) 4588 { 4589 int error = 0; 4590 int i; 4591 char *attrs = fattrp->attrlist4; 4592 uint32_t attrslen = fattrp->attrlist4_len; 4593 XDR xdr; 4594 nfsstat4 status = NFS4_OK; 4595 vnode_t *vp = cs->vp; 4596 union nfs4_attr_u *na; 4597 uint8_t *amap; 4598 4599 #ifndef lint 4600 /* 4601 * Make sure that maximum attribute number can be expressed as an 4602 * 8 bit quantity. 4603 */ 4604 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 4605 #endif 4606 4607 if (vp == NULL) { 4608 if (resp) 4609 *resp = 0; 4610 return (NFS4ERR_NOFILEHANDLE); 4611 } 4612 if (cs->access == CS_ACCESS_DENIED) { 4613 if (resp) 4614 *resp = 0; 4615 return (NFS4ERR_ACCESS); 4616 } 4617 4618 sargp->op = cmd; 4619 sargp->cs = cs; 4620 sargp->flag = 0; /* may be set later */ 4621 sargp->vap->va_mask = 0; 4622 sargp->rdattr_error = NFS4_OK; 4623 sargp->rdattr_error_req = FALSE; 4624 /* sargp->sbp is set by the caller */ 4625 4626 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 4627 4628 na = ntovp->na; 4629 amap = ntovp->amap; 4630 4631 /* 4632 * The following loop iterates on the nfs4_ntov_map checking 4633 * if the fbit is set in the requested bitmap. 4634 * If set then we process the arguments using the 4635 * rfs4_fattr4 conversion functions to populate the setattr 4636 * vattr and va_mask. Any settable attrs that are not using vattr 4637 * will be set in this loop. 4638 */ 4639 for (i = 0; i < nfs4_ntov_map_size; i++) { 4640 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 4641 continue; 4642 } 4643 /* 4644 * If setattr, must be a writable attr. 4645 * If verify/nverify, must be a readable attr. 4646 */ 4647 if ((error = (*nfs4_ntov_map[i].sv_getit)( 4648 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 4649 /* 4650 * Client tries to set/verify an 4651 * unsupported attribute, tries to set 4652 * a read only attr or verify a write 4653 * only one - error! 4654 */ 4655 break; 4656 } 4657 /* 4658 * Decode the attribute to set/verify 4659 */ 4660 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 4661 &xdr, resp ? resp : NULL, na); 4662 if (error) 4663 break; 4664 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 4665 na++; 4666 (ntovp->attrcnt)++; 4667 if (nfs4_ntov_map[i].vfsstat) 4668 ntovp->vfsstat = TRUE; 4669 } 4670 4671 if (error != 0) 4672 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 4673 puterrno4(error)); 4674 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 4675 return (status); 4676 } 4677 4678 static nfsstat4 4679 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4680 stateid4 *stateid) 4681 { 4682 int error = 0; 4683 struct nfs4_svgetit_arg sarg; 4684 bool_t trunc; 4685 4686 nfsstat4 status = NFS4_OK; 4687 cred_t *cr = cs->cr; 4688 vnode_t *vp = cs->vp; 4689 struct nfs4_ntov_table ntov; 4690 struct statvfs64 sb; 4691 struct vattr bva; 4692 struct flock64 bf; 4693 int in_crit = 0; 4694 uint_t saved_mask = 0; 4695 caller_context_t ct; 4696 4697 *resp = 0; 4698 sarg.sbp = &sb; 4699 nfs4_ntov_table_init(&ntov); 4700 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 4701 NFS4ATTR_SETIT); 4702 if (status != NFS4_OK) { 4703 /* 4704 * failed set attrs 4705 */ 4706 goto done; 4707 } 4708 if ((sarg.vap->va_mask == 0) && 4709 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 4710 /* 4711 * no further work to be done 4712 */ 4713 goto done; 4714 } 4715 4716 /* 4717 * If we got a request to set the ACL and the MODE, only 4718 * allow changing VSUID, VSGID, and VSVTX. Attempting 4719 * to change any other bits, along with setting an ACL, 4720 * gives NFS4ERR_INVAL. 4721 */ 4722 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 4723 (fattrp->attrmask & FATTR4_MODE_MASK)) { 4724 vattr_t va; 4725 4726 va.va_mask = AT_MODE; 4727 error = VOP_GETATTR(vp, &va, 0, cs->cr); 4728 if (error) { 4729 status = puterrno4(error); 4730 goto done; 4731 } 4732 if ((sarg.vap->va_mode ^ va.va_mode) & 4733 ~(VSUID | VSGID | VSVTX)) { 4734 status = NFS4ERR_INVAL; 4735 goto done; 4736 } 4737 } 4738 4739 /* Check stateid only if size has been set */ 4740 if (sarg.vap->va_mask & AT_SIZE) { 4741 trunc = (sarg.vap->va_size == 0); 4742 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 4743 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE); 4744 if (status != NFS4_OK) 4745 goto done; 4746 } 4747 4748 ct.cc_sysid = 0; 4749 ct.cc_pid = 0; 4750 ct.cc_caller_id = nfs4_srv_caller_id; 4751 4752 /* XXX start of possible race with delegations */ 4753 4754 /* 4755 * We need to specially handle size changes because it is 4756 * possible for the client to create a file with read-only 4757 * modes, but with the file opened for writing. If the client 4758 * then tries to set the file size, e.g. ftruncate(3C), 4759 * fcntl(F_FREESP), the normal access checking done in 4760 * VOP_SETATTR would prevent the client from doing it even though 4761 * it should be allowed to do so. To get around this, we do the 4762 * access checking for ourselves and use VOP_SPACE which doesn't 4763 * do the access checking. 4764 * Also the client should not be allowed to change the file 4765 * size if there is a conflicting non-blocking mandatory lock in 4766 * the region of the change. 4767 */ 4768 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 4769 u_offset_t offset; 4770 ssize_t length; 4771 4772 /* 4773 * ufs_setattr clears AT_SIZE from vap->va_mask, but 4774 * before returning, sarg.vap->va_mask is used to 4775 * generate the setattr reply bitmap. We also clear 4776 * AT_SIZE below before calling VOP_SPACE. For both 4777 * of these cases, the va_mask needs to be saved here 4778 * and restored after calling VOP_SETATTR. 4779 */ 4780 saved_mask = sarg.vap->va_mask; 4781 4782 /* 4783 * Check any possible conflict due to NBMAND locks. 4784 * Get into critical region before VOP_GETATTR, so the 4785 * size attribute is valid when checking conflicts. 4786 */ 4787 if (nbl_need_check(vp)) { 4788 nbl_start_crit(vp, RW_READER); 4789 in_crit = 1; 4790 } 4791 4792 bva.va_mask = AT_UID|AT_SIZE; 4793 if (error = VOP_GETATTR(vp, &bva, 0, cr)) { 4794 status = puterrno4(error); 4795 goto done; 4796 } 4797 4798 if (in_crit) { 4799 if (sarg.vap->va_size < bva.va_size) { 4800 offset = sarg.vap->va_size; 4801 length = bva.va_size - sarg.vap->va_size; 4802 } else { 4803 offset = bva.va_size; 4804 length = sarg.vap->va_size - bva.va_size; 4805 } 4806 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0)) { 4807 status = NFS4ERR_LOCKED; 4808 goto done; 4809 } 4810 } 4811 4812 if (crgetuid(cr) == bva.va_uid) { 4813 sarg.vap->va_mask &= ~AT_SIZE; 4814 bf.l_type = F_WRLCK; 4815 bf.l_whence = 0; 4816 bf.l_start = (off64_t)sarg.vap->va_size; 4817 bf.l_len = 0; 4818 bf.l_sysid = 0; 4819 bf.l_pid = 0; 4820 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 4821 (offset_t)sarg.vap->va_size, cr, &ct); 4822 } 4823 } 4824 4825 if (!error && sarg.vap->va_mask != 0) 4826 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 4827 4828 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 4829 if (saved_mask & AT_SIZE) 4830 sarg.vap->va_mask |= AT_SIZE; 4831 4832 /* 4833 * If an ACL was being set, it has been delayed until now, 4834 * in order to set the mode (via the VOP_SETATTR() above) first. 4835 */ 4836 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 4837 int i; 4838 4839 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 4840 if (ntov.amap[i] == FATTR4_ACL) 4841 break; 4842 if (i < NFS4_MAXNUM_ATTRS) { 4843 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 4844 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 4845 if (error == 0) { 4846 *resp |= FATTR4_ACL_MASK; 4847 } else if (error == ENOTSUP) { 4848 (void) rfs4_verify_attr(&sarg, resp, &ntov); 4849 status = NFS4ERR_ATTRNOTSUPP; 4850 goto done; 4851 } 4852 } else { 4853 NFS4_DEBUG(rfs4_debug, 4854 (CE_NOTE, "do_rfs4_op_setattr: " 4855 "unable to find ACL in fattr4")); 4856 error = EINVAL; 4857 } 4858 } 4859 4860 if (error) { 4861 status = puterrno4(error); 4862 4863 /* 4864 * Set the response bitmap when setattr failed. 4865 * If VOP_SETATTR partially succeeded, test by doing a 4866 * VOP_GETATTR on the object and comparing the data 4867 * to the setattr arguments. 4868 */ 4869 (void) rfs4_verify_attr(&sarg, resp, &ntov); 4870 } else { 4871 /* 4872 * Force modified metadata out to stable storage. 4873 */ 4874 (void) VOP_FSYNC(vp, FNODSYNC, cr); 4875 /* 4876 * Set response bitmap 4877 */ 4878 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 4879 } 4880 4881 /* Return early and already have a NFSv4 error */ 4882 done: 4883 /* 4884 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 4885 * conversion sets both readable and writeable NFS4 attrs 4886 * for AT_MTIME and AT_ATIME. The line below masks out 4887 * unrequested attrs from the setattr result bitmap. This 4888 * is placed after the done: label to catch the ATTRNOTSUP 4889 * case. 4890 */ 4891 *resp &= fattrp->attrmask; 4892 4893 if (in_crit) 4894 nbl_end_crit(vp); 4895 4896 nfs4_ntov_table_free(&ntov, &sarg); 4897 4898 return (status); 4899 } 4900 4901 /* ARGSUSED */ 4902 static void 4903 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4904 struct compound_state *cs) 4905 { 4906 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 4907 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 4908 bslabel_t *clabel; 4909 4910 if (cs->vp == NULL) { 4911 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4912 return; 4913 } 4914 4915 /* 4916 * If there is an unshared filesystem mounted on this vnode, 4917 * do not allow to setattr on this vnode. 4918 */ 4919 if (vn_ismntpt(cs->vp)) { 4920 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4921 return; 4922 } 4923 4924 resp->attrsset = 0; 4925 4926 if (rdonly4(cs->exi, cs->vp, req)) { 4927 *cs->statusp = resp->status = NFS4ERR_ROFS; 4928 return; 4929 } 4930 4931 /* check label before setting attributes */ 4932 if (is_system_labeled()) { 4933 ASSERT(req->rq_label != NULL); 4934 clabel = req->rq_label; 4935 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 4936 "got client label from request(1)", 4937 struct svc_req *, req); 4938 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4939 if (!do_rfs4_label_check(clabel, cs->vp, 4940 EQUALITY_CHECK)) { 4941 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4942 return; 4943 } 4944 } 4945 } 4946 4947 *cs->statusp = resp->status = 4948 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 4949 &args->stateid); 4950 } 4951 4952 /* ARGSUSED */ 4953 static void 4954 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4955 struct compound_state *cs) 4956 { 4957 /* 4958 * verify and nverify are exactly the same, except that nverify 4959 * succeeds when some argument changed, and verify succeeds when 4960 * when none changed. 4961 */ 4962 4963 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 4964 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 4965 4966 int error; 4967 struct nfs4_svgetit_arg sarg; 4968 struct statvfs64 sb; 4969 struct nfs4_ntov_table ntov; 4970 4971 if (cs->vp == NULL) { 4972 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4973 return; 4974 } 4975 4976 sarg.sbp = &sb; 4977 nfs4_ntov_table_init(&ntov); 4978 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 4979 &sarg, &ntov, NFS4ATTR_VERIT); 4980 if (resp->status != NFS4_OK) { 4981 /* 4982 * do_rfs4_set_attrs will try to verify systemwide attrs, 4983 * so could return -1 for "no match". 4984 */ 4985 if (resp->status == -1) 4986 resp->status = NFS4ERR_NOT_SAME; 4987 goto done; 4988 } 4989 error = rfs4_verify_attr(&sarg, NULL, &ntov); 4990 switch (error) { 4991 case 0: 4992 resp->status = NFS4_OK; 4993 break; 4994 case -1: 4995 resp->status = NFS4ERR_NOT_SAME; 4996 break; 4997 default: 4998 resp->status = puterrno4(error); 4999 break; 5000 } 5001 done: 5002 *cs->statusp = resp->status; 5003 nfs4_ntov_table_free(&ntov, &sarg); 5004 } 5005 5006 /* ARGSUSED */ 5007 static void 5008 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5009 struct compound_state *cs) 5010 { 5011 /* 5012 * verify and nverify are exactly the same, except that nverify 5013 * succeeds when some argument changed, and verify succeeds when 5014 * when none changed. 5015 */ 5016 5017 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5018 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5019 5020 int error; 5021 struct nfs4_svgetit_arg sarg; 5022 struct statvfs64 sb; 5023 struct nfs4_ntov_table ntov; 5024 5025 if (cs->vp == NULL) { 5026 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5027 return; 5028 } 5029 sarg.sbp = &sb; 5030 nfs4_ntov_table_init(&ntov); 5031 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5032 &sarg, &ntov, NFS4ATTR_VERIT); 5033 if (resp->status != NFS4_OK) { 5034 /* 5035 * do_rfs4_set_attrs will try to verify systemwide attrs, 5036 * so could return -1 for "no match". 5037 */ 5038 if (resp->status == -1) 5039 resp->status = NFS4_OK; 5040 goto done; 5041 } 5042 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5043 switch (error) { 5044 case 0: 5045 resp->status = NFS4ERR_SAME; 5046 break; 5047 case -1: 5048 resp->status = NFS4_OK; 5049 break; 5050 default: 5051 resp->status = puterrno4(error); 5052 break; 5053 } 5054 done: 5055 *cs->statusp = resp->status; 5056 nfs4_ntov_table_free(&ntov, &sarg); 5057 } 5058 5059 /* 5060 * XXX - This should live in an NFS header file. 5061 */ 5062 #define MAX_IOVECS 12 5063 5064 /* ARGSUSED */ 5065 static void 5066 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5067 struct compound_state *cs) 5068 { 5069 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5070 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5071 int error; 5072 vnode_t *vp; 5073 struct vattr bva; 5074 u_offset_t rlimit; 5075 struct uio uio; 5076 struct iovec iov[MAX_IOVECS]; 5077 struct iovec *iovp; 5078 int iovcnt; 5079 int ioflag; 5080 cred_t *savecred, *cr; 5081 bool_t *deleg = &cs->deleg; 5082 nfsstat4 stat; 5083 int in_crit = 0; 5084 5085 vp = cs->vp; 5086 if (vp == NULL) { 5087 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5088 return; 5089 } 5090 if (cs->access == CS_ACCESS_DENIED) { 5091 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5092 return; 5093 } 5094 5095 cr = cs->cr; 5096 5097 /* 5098 * We have to enter the critical region before calling VOP_RWLOCK 5099 * to avoid a deadlock with ufs. 5100 */ 5101 if (nbl_need_check(vp)) { 5102 nbl_start_crit(vp, RW_READER); 5103 in_crit = 1; 5104 if (nbl_conflict(vp, NBL_WRITE, 5105 args->offset, args->data_len, 0)) { 5106 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5107 goto out; 5108 } 5109 } 5110 5111 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5112 deleg, TRUE)) != NFS4_OK) { 5113 *cs->statusp = resp->status = stat; 5114 goto out; 5115 } 5116 5117 bva.va_mask = AT_MODE | AT_UID; 5118 error = VOP_GETATTR(vp, &bva, 0, cr); 5119 5120 /* 5121 * If we can't get the attributes, then we can't do the 5122 * right access checking. So, we'll fail the request. 5123 */ 5124 if (error) { 5125 *cs->statusp = resp->status = puterrno4(error); 5126 goto out; 5127 } 5128 5129 if (rdonly4(cs->exi, cs->vp, req)) { 5130 *cs->statusp = resp->status = NFS4ERR_ROFS; 5131 goto out; 5132 } 5133 5134 if (vp->v_type != VREG) { 5135 *cs->statusp = resp->status = 5136 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5137 goto out; 5138 } 5139 5140 if (crgetuid(cr) != bva.va_uid && 5141 (error = VOP_ACCESS(vp, VWRITE, 0, cr))) { 5142 *cs->statusp = resp->status = puterrno4(error); 5143 goto out; 5144 } 5145 5146 if (MANDLOCK(vp, bva.va_mode)) { 5147 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5148 goto out; 5149 } 5150 5151 if (args->data_len == 0) { 5152 *cs->statusp = resp->status = NFS4_OK; 5153 resp->count = 0; 5154 resp->committed = args->stable; 5155 resp->writeverf = Write4verf; 5156 goto out; 5157 } 5158 5159 if (args->mblk != NULL) { 5160 mblk_t *m; 5161 uint_t bytes, round_len; 5162 5163 iovcnt = 0; 5164 bytes = 0; 5165 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5166 for (m = args->mblk; 5167 m != NULL && bytes < round_len; 5168 m = m->b_cont) { 5169 iovcnt++; 5170 bytes += MBLKL(m); 5171 } 5172 #ifdef DEBUG 5173 /* should have ended on an mblk boundary */ 5174 if (bytes != round_len) { 5175 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5176 bytes, round_len, args->data_len); 5177 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5178 (void *)args->mblk, (void *)m); 5179 ASSERT(bytes == round_len); 5180 } 5181 #endif 5182 if (iovcnt <= MAX_IOVECS) { 5183 iovp = iov; 5184 } else { 5185 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5186 } 5187 mblk_to_iov(args->mblk, iovcnt, iovp); 5188 } else { 5189 iovcnt = 1; 5190 iovp = iov; 5191 iovp->iov_base = args->data_val; 5192 iovp->iov_len = args->data_len; 5193 } 5194 5195 uio.uio_iov = iovp; 5196 uio.uio_iovcnt = iovcnt; 5197 5198 uio.uio_segflg = UIO_SYSSPACE; 5199 uio.uio_extflg = UIO_COPY_DEFAULT; 5200 uio.uio_loffset = args->offset; 5201 uio.uio_resid = args->data_len; 5202 uio.uio_llimit = curproc->p_fsz_ctl; 5203 rlimit = uio.uio_llimit - args->offset; 5204 if (rlimit < (u_offset_t)uio.uio_resid) 5205 uio.uio_resid = (int)rlimit; 5206 5207 if (args->stable == UNSTABLE4) 5208 ioflag = 0; 5209 else if (args->stable == FILE_SYNC4) 5210 ioflag = FSYNC; 5211 else if (args->stable == DATA_SYNC4) 5212 ioflag = FDSYNC; 5213 else { 5214 if (iovp != iov) 5215 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5216 *cs->statusp = resp->status = NFS4ERR_INVAL; 5217 goto out; 5218 } 5219 5220 /* 5221 * We're changing creds because VM may fault and we need 5222 * the cred of the current thread to be used if quota 5223 * checking is enabled. 5224 */ 5225 savecred = curthread->t_cred; 5226 curthread->t_cred = cr; 5227 error = do_io(FWRITE, vp, &uio, ioflag, cr); 5228 curthread->t_cred = savecred; 5229 5230 if (iovp != iov) 5231 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5232 5233 if (error) { 5234 *cs->statusp = resp->status = puterrno4(error); 5235 goto out; 5236 } 5237 5238 *cs->statusp = resp->status = NFS4_OK; 5239 resp->count = args->data_len - uio.uio_resid; 5240 5241 if (ioflag == 0) 5242 resp->committed = UNSTABLE4; 5243 else 5244 resp->committed = FILE_SYNC4; 5245 5246 resp->writeverf = Write4verf; 5247 5248 out: 5249 if (in_crit) 5250 nbl_end_crit(vp); 5251 } 5252 5253 5254 /* XXX put in a header file */ 5255 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5256 5257 void 5258 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5259 struct svc_req *req, cred_t *cr) 5260 { 5261 uint_t i; 5262 struct compound_state cs; 5263 5264 rfs4_init_compound_state(&cs); 5265 /* 5266 * Form a reply tag by copying over the reqeuest tag. 5267 */ 5268 resp->tag.utf8string_val = 5269 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5270 resp->tag.utf8string_len = args->tag.utf8string_len; 5271 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5272 resp->tag.utf8string_len); 5273 5274 cs.statusp = &resp->status; 5275 5276 /* 5277 * XXX for now, minorversion should be zero 5278 */ 5279 if (args->minorversion != NFS4_MINORVERSION) { 5280 resp->array_len = 0; 5281 resp->array = NULL; 5282 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5283 return; 5284 } 5285 5286 resp->array_len = args->array_len; 5287 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5288 KM_SLEEP); 5289 5290 ASSERT(exi == NULL); 5291 ASSERT(cr == NULL); 5292 5293 cr = crget(); 5294 ASSERT(cr != NULL); 5295 5296 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5297 crfree(cr); 5298 return; 5299 } 5300 5301 cs.basecr = cr; 5302 5303 cs.req = req; 5304 5305 /* 5306 * For now, NFS4 compound processing must be protected by 5307 * exported_lock because it can access more than one exportinfo 5308 * per compound and share/unshare can now change multiple 5309 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5310 * per proc (excluding public exinfo), and exi_count design 5311 * is sufficient to protect concurrent execution of NFS2/3 5312 * ops along with unexport. This lock will be removed as 5313 * part of the NFSv4 phase 2 namespace redesign work. 5314 */ 5315 rw_enter(&exported_lock, RW_READER); 5316 5317 /* 5318 * If this is the first compound we've seen, we need to start all 5319 * new instances' grace periods. 5320 */ 5321 if (rfs4_seen_first_compound == 0) { 5322 rfs4_grace_start_new(); 5323 /* 5324 * This must be set after rfs4_grace_start_new(), otherwise 5325 * another thread could proceed past here before the former 5326 * is finished. 5327 */ 5328 rfs4_seen_first_compound = 1; 5329 } 5330 5331 for (i = 0; i < args->array_len && cs.cont; i++) { 5332 nfs_argop4 *argop; 5333 nfs_resop4 *resop; 5334 uint_t op; 5335 5336 argop = &args->array[i]; 5337 resop = &resp->array[i]; 5338 resop->resop = argop->argop; 5339 op = (uint_t)resop->resop; 5340 5341 if (op < rfsv4disp_cnt) { 5342 /* 5343 * Count the individual ops here; NULL and COMPOUND 5344 * are counted in common_dispatch() 5345 */ 5346 rfsproccnt_v4_ptr[op].value.ui64++; 5347 5348 NFS4_DEBUG(rfs4_debug > 1, 5349 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5350 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5351 NFS4_DEBUG(rfs4_debug > 1, 5352 (CE_NOTE, "%s returned %d", 5353 rfs4_op_string[op], *cs.statusp)); 5354 if (*cs.statusp != NFS4_OK) 5355 cs.cont = FALSE; 5356 } else { 5357 /* 5358 * This is effectively dead code since XDR code 5359 * will have already returned BADXDR if op doesn't 5360 * decode to legal value. This only done for a 5361 * day when XDR code doesn't verify v4 opcodes. 5362 */ 5363 op = OP_ILLEGAL; 5364 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5365 5366 rfs4_op_illegal(argop, resop, req, &cs); 5367 cs.cont = FALSE; 5368 } 5369 5370 /* 5371 * If not at last op, and if we are to stop, then 5372 * compact the results array. 5373 */ 5374 if ((i + 1) < args->array_len && !cs.cont) { 5375 nfs_resop4 *new_res = kmem_alloc( 5376 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5377 bcopy(resp->array, 5378 new_res, (i+1) * sizeof (nfs_resop4)); 5379 kmem_free(resp->array, 5380 args->array_len * sizeof (nfs_resop4)); 5381 5382 resp->array_len = i + 1; 5383 resp->array = new_res; 5384 } 5385 } 5386 5387 rw_exit(&exported_lock); 5388 5389 if (cs.vp) 5390 VN_RELE(cs.vp); 5391 if (cs.saved_vp) 5392 VN_RELE(cs.saved_vp); 5393 if (cs.saved_fh.nfs_fh4_val) 5394 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5395 5396 if (cs.basecr) 5397 crfree(cs.basecr); 5398 if (cs.cr) 5399 crfree(cs.cr); 5400 /* 5401 * done with this compound request, free the label 5402 */ 5403 5404 if (req->rq_label != NULL) { 5405 kmem_free(req->rq_label, sizeof (bslabel_t)); 5406 req->rq_label = NULL; 5407 } 5408 } 5409 5410 /* 5411 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5412 * XXX zero out the tag and array values. Need to investigate why the 5413 * XXX calls occur, but at least prevent the panic for now. 5414 */ 5415 void 5416 rfs4_compound_free(COMPOUND4res *resp) 5417 { 5418 uint_t i; 5419 5420 if (resp->tag.utf8string_val) { 5421 UTF8STRING_FREE(resp->tag) 5422 } 5423 5424 for (i = 0; i < resp->array_len; i++) { 5425 nfs_resop4 *resop; 5426 uint_t op; 5427 5428 resop = &resp->array[i]; 5429 op = (uint_t)resop->resop; 5430 if (op < rfsv4disp_cnt) { 5431 (*rfsv4disptab[op].dis_resfree)(resop); 5432 } 5433 } 5434 if (resp->array != NULL) { 5435 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5436 } 5437 } 5438 5439 /* 5440 * Process the value of the compound request rpc flags, as a bit-AND 5441 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5442 */ 5443 void 5444 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5445 { 5446 int i; 5447 int flag = RPC_ALL; 5448 5449 for (i = 0; flag && i < args->array_len; i++) { 5450 uint_t op; 5451 5452 op = (uint_t)args->array[i].argop; 5453 5454 if (op < rfsv4disp_cnt) 5455 flag &= rfsv4disptab[op].dis_flags; 5456 else 5457 flag = 0; 5458 } 5459 *flagp = flag; 5460 } 5461 5462 nfsstat4 5463 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5464 { 5465 nfsstat4 e; 5466 5467 rfs4_dbe_lock(cp->dbe); 5468 5469 if (cp->sysidt != LM_NOSYSID) { 5470 *sp = cp->sysidt; 5471 e = NFS4_OK; 5472 5473 } else if ((cp->sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 5474 *sp = cp->sysidt; 5475 e = NFS4_OK; 5476 5477 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 5478 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 5479 } else 5480 e = NFS4ERR_DELAY; 5481 5482 rfs4_dbe_unlock(cp->dbe); 5483 return (e); 5484 } 5485 5486 #if defined(DEBUG) && ! defined(lint) 5487 static void lock_print(char *str, int operation, struct flock64 *flk) 5488 { 5489 char *op, *type; 5490 5491 switch (operation) { 5492 case F_GETLK: op = "F_GETLK"; 5493 break; 5494 case F_SETLK: op = "F_SETLK"; 5495 break; 5496 default: op = "F_UNKNOWN"; 5497 break; 5498 } 5499 switch (flk->l_type) { 5500 case F_UNLCK: type = "F_UNLCK"; 5501 break; 5502 case F_RDLCK: type = "F_RDLCK"; 5503 break; 5504 case F_WRLCK: type = "F_WRLCK"; 5505 break; 5506 default: type = "F_UNKNOWN"; 5507 break; 5508 } 5509 5510 ASSERT(flk->l_whence == 0); 5511 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 5512 str, op, type, 5513 (longlong_t)flk->l_start, 5514 flk->l_len ? (longlong_t)flk->l_len : ~0LL, 5515 flk->l_pid); 5516 } 5517 5518 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 5519 #else 5520 #define LOCK_PRINT(d, s, t, f) 5521 #endif 5522 5523 /*ARGSUSED*/ 5524 static bool_t 5525 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 5526 { 5527 return (TRUE); 5528 } 5529 5530 /* 5531 * Look up the pathname using the vp in cs as the directory vnode. 5532 * cs->vp will be the vnode for the file on success 5533 */ 5534 5535 static nfsstat4 5536 rfs4_lookup(component4 *component, struct svc_req *req, 5537 struct compound_state *cs) 5538 { 5539 char *nm; 5540 uint32_t len; 5541 nfsstat4 status; 5542 5543 if (cs->vp == NULL) { 5544 return (NFS4ERR_NOFILEHANDLE); 5545 } 5546 if (cs->vp->v_type != VDIR) { 5547 return (NFS4ERR_NOTDIR); 5548 } 5549 5550 if (!utf8_dir_verify(component)) 5551 return (NFS4ERR_INVAL); 5552 5553 nm = utf8_to_fn(component, &len, NULL); 5554 if (nm == NULL) { 5555 return (NFS4ERR_INVAL); 5556 } 5557 5558 if (len > MAXNAMELEN) { 5559 kmem_free(nm, len); 5560 return (NFS4ERR_NAMETOOLONG); 5561 } 5562 5563 status = do_rfs4_op_lookup(nm, len, req, cs); 5564 5565 kmem_free(nm, len); 5566 5567 return (status); 5568 } 5569 5570 static nfsstat4 5571 rfs4_lookupfile(component4 *component, struct svc_req *req, 5572 struct compound_state *cs, uint32_t access, 5573 change_info4 *cinfo) 5574 { 5575 nfsstat4 status; 5576 vnode_t *dvp = cs->vp; 5577 vattr_t bva, ava, fva; 5578 int error; 5579 5580 /* Get "before" change value */ 5581 bva.va_mask = AT_CTIME|AT_SEQ; 5582 error = VOP_GETATTR(dvp, &bva, 0, cs->cr); 5583 if (error) 5584 return (puterrno4(error)); 5585 5586 /* rfs4_lookup may VN_RELE directory */ 5587 VN_HOLD(dvp); 5588 5589 status = rfs4_lookup(component, req, cs); 5590 if (status != NFS4_OK) { 5591 VN_RELE(dvp); 5592 return (status); 5593 } 5594 5595 /* 5596 * Get "after" change value, if it fails, simply return the 5597 * before value. 5598 */ 5599 ava.va_mask = AT_CTIME|AT_SEQ; 5600 if (VOP_GETATTR(dvp, &ava, 0, cs->cr)) { 5601 ava.va_ctime = bva.va_ctime; 5602 ava.va_seq = 0; 5603 } 5604 VN_RELE(dvp); 5605 5606 /* 5607 * Validate the file is a file 5608 */ 5609 fva.va_mask = AT_TYPE|AT_MODE; 5610 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr); 5611 if (error) 5612 return (puterrno4(error)); 5613 5614 if (fva.va_type != VREG) { 5615 if (fva.va_type == VDIR) 5616 return (NFS4ERR_ISDIR); 5617 if (fva.va_type == VLNK) 5618 return (NFS4ERR_SYMLINK); 5619 return (NFS4ERR_INVAL); 5620 } 5621 5622 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 5623 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 5624 5625 /* 5626 * It is undefined if VOP_LOOKUP will change va_seq, so 5627 * cinfo.atomic = TRUE only if we have 5628 * non-zero va_seq's, and they have not changed. 5629 */ 5630 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 5631 cinfo->atomic = TRUE; 5632 else 5633 cinfo->atomic = FALSE; 5634 5635 /* Check for mandatory locking */ 5636 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 5637 return (check_open_access(access, cs, req)); 5638 } 5639 5640 static nfsstat4 5641 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 5642 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 5643 { 5644 int error; 5645 nfsstat4 status = NFS4_OK; 5646 vattr_t va; 5647 5648 tryagain: 5649 5650 /* 5651 * The file open mode used is VWRITE. If the client needs 5652 * some other semantic, then it should do the access checking 5653 * itself. It would have been nice to have the file open mode 5654 * passed as part of the arguments. 5655 */ 5656 5657 *created = TRUE; 5658 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0); 5659 5660 if (error) { 5661 *created = FALSE; 5662 5663 /* 5664 * If we got something other than file already exists 5665 * then just return this error. Otherwise, we got 5666 * EEXIST. If we were doing a GUARDED create, then 5667 * just return this error. Otherwise, we need to 5668 * make sure that this wasn't a duplicate of an 5669 * exclusive create request. 5670 * 5671 * The assumption is made that a non-exclusive create 5672 * request will never return EEXIST. 5673 */ 5674 5675 if (error != EEXIST || mode == GUARDED4) { 5676 status = puterrno4(error); 5677 return (status); 5678 } 5679 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr); 5680 5681 if (error) { 5682 /* 5683 * We couldn't find the file that we thought that 5684 * we just created. So, we'll just try creating 5685 * it again. 5686 */ 5687 if (error == ENOENT) 5688 goto tryagain; 5689 5690 status = puterrno4(error); 5691 return (status); 5692 } 5693 5694 if (mode == UNCHECKED4) { 5695 /* existing object must be regular file */ 5696 if ((*vpp)->v_type != VREG) { 5697 if ((*vpp)->v_type == VDIR) 5698 status = NFS4ERR_ISDIR; 5699 else if ((*vpp)->v_type == VLNK) 5700 status = NFS4ERR_SYMLINK; 5701 else 5702 status = NFS4ERR_INVAL; 5703 VN_RELE(*vpp); 5704 return (status); 5705 } 5706 5707 return (NFS4_OK); 5708 } 5709 5710 /* Check for duplicate request */ 5711 ASSERT(mtime != 0); 5712 va.va_mask = AT_MTIME; 5713 error = VOP_GETATTR(*vpp, &va, 0, cr); 5714 if (!error) { 5715 /* We found the file */ 5716 if (va.va_mtime.tv_sec != mtime->tv_sec || 5717 va.va_mtime.tv_nsec != mtime->tv_nsec) { 5718 /* but its not our creation */ 5719 VN_RELE(*vpp); 5720 return (NFS4ERR_EXIST); 5721 } 5722 *created = TRUE; /* retrans of create == created */ 5723 return (NFS4_OK); 5724 } 5725 VN_RELE(*vpp); 5726 return (NFS4ERR_EXIST); 5727 } 5728 5729 return (NFS4_OK); 5730 } 5731 5732 static nfsstat4 5733 check_open_access(uint32_t access, 5734 struct compound_state *cs, struct svc_req *req) 5735 { 5736 int error; 5737 vnode_t *vp; 5738 bool_t readonly; 5739 cred_t *cr = cs->cr; 5740 5741 /* For now we don't allow mandatory locking as per V2/V3 */ 5742 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 5743 return (NFS4ERR_ACCESS); 5744 } 5745 5746 vp = cs->vp; 5747 ASSERT(cr != NULL && vp->v_type == VREG); 5748 5749 /* 5750 * If the file system is exported read only and we are trying 5751 * to open for write, then return NFS4ERR_ROFS 5752 */ 5753 5754 readonly = rdonly4(cs->exi, cs->vp, req); 5755 5756 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 5757 return (NFS4ERR_ROFS); 5758 5759 if (access & OPEN4_SHARE_ACCESS_READ) { 5760 if ((VOP_ACCESS(vp, VREAD, 0, cr) != 0) && 5761 (VOP_ACCESS(vp, VEXEC, 0, cr) != 0)) { 5762 return (NFS4ERR_ACCESS); 5763 } 5764 } 5765 5766 if (access & OPEN4_SHARE_ACCESS_WRITE) { 5767 error = VOP_ACCESS(vp, VWRITE, 0, cr); 5768 if (error) 5769 return (NFS4ERR_ACCESS); 5770 } 5771 5772 return (NFS4_OK); 5773 } 5774 5775 static nfsstat4 5776 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 5777 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 5778 { 5779 struct nfs4_svgetit_arg sarg; 5780 struct nfs4_ntov_table ntov; 5781 5782 bool_t ntov_table_init = FALSE; 5783 struct statvfs64 sb; 5784 nfsstat4 status; 5785 vnode_t *vp; 5786 vattr_t bva, ava, iva, cva, *vap; 5787 vnode_t *dvp; 5788 timespec32_t *mtime; 5789 char *nm = NULL; 5790 uint_t buflen; 5791 bool_t created; 5792 bool_t setsize = FALSE; 5793 len_t reqsize; 5794 int error; 5795 bool_t trunc; 5796 caller_context_t ct; 5797 component4 *component; 5798 bslabel_t *clabel; 5799 5800 sarg.sbp = &sb; 5801 5802 dvp = cs->vp; 5803 5804 /* Check if the file system is read only */ 5805 if (rdonly4(cs->exi, dvp, req)) 5806 return (NFS4ERR_ROFS); 5807 5808 /* check the label of including directory */ 5809 if (is_system_labeled()) { 5810 ASSERT(req->rq_label != NULL); 5811 clabel = req->rq_label; 5812 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 5813 "got client label from request(1)", 5814 struct svc_req *, req); 5815 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5816 if (!do_rfs4_label_check(clabel, dvp, EQUALITY_CHECK)) { 5817 return (NFS4ERR_ACCESS); 5818 } 5819 } 5820 } 5821 5822 /* 5823 * Get the last component of path name in nm. cs will reference 5824 * the including directory on success. 5825 */ 5826 component = &args->open_claim4_u.file; 5827 if (!utf8_dir_verify(component)) 5828 return (NFS4ERR_INVAL); 5829 5830 nm = utf8_to_fn(component, &buflen, NULL); 5831 5832 if (nm == NULL) 5833 return (NFS4ERR_RESOURCE); 5834 5835 if (buflen > MAXNAMELEN) { 5836 kmem_free(nm, buflen); 5837 return (NFS4ERR_NAMETOOLONG); 5838 } 5839 5840 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 5841 error = VOP_GETATTR(dvp, &bva, 0, cs->cr); 5842 if (error) { 5843 kmem_free(nm, buflen); 5844 return (puterrno4(error)); 5845 } 5846 5847 if (bva.va_type != VDIR) { 5848 kmem_free(nm, buflen); 5849 return (NFS4ERR_NOTDIR); 5850 } 5851 5852 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 5853 5854 switch (args->mode) { 5855 case GUARDED4: 5856 /*FALLTHROUGH*/ 5857 case UNCHECKED4: 5858 nfs4_ntov_table_init(&ntov); 5859 ntov_table_init = TRUE; 5860 5861 *attrset = 0; 5862 status = do_rfs4_set_attrs(attrset, 5863 &args->createhow4_u.createattrs, 5864 cs, &sarg, &ntov, NFS4ATTR_SETIT); 5865 5866 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 5867 sarg.vap->va_type != VREG) { 5868 if (sarg.vap->va_type == VDIR) 5869 status = NFS4ERR_ISDIR; 5870 else if (sarg.vap->va_type == VLNK) 5871 status = NFS4ERR_SYMLINK; 5872 else 5873 status = NFS4ERR_INVAL; 5874 } 5875 5876 if (status != NFS4_OK) { 5877 kmem_free(nm, buflen); 5878 nfs4_ntov_table_free(&ntov, &sarg); 5879 *attrset = 0; 5880 return (status); 5881 } 5882 5883 vap = sarg.vap; 5884 vap->va_type = VREG; 5885 vap->va_mask |= AT_TYPE; 5886 5887 if ((vap->va_mask & AT_MODE) == 0) { 5888 vap->va_mask |= AT_MODE; 5889 vap->va_mode = (mode_t)0600; 5890 } 5891 5892 if (vap->va_mask & AT_SIZE) { 5893 5894 /* Disallow create with a non-zero size */ 5895 5896 if ((reqsize = sarg.vap->va_size) != 0) { 5897 kmem_free(nm, buflen); 5898 nfs4_ntov_table_free(&ntov, &sarg); 5899 *attrset = 0; 5900 return (NFS4ERR_INVAL); 5901 } 5902 setsize = TRUE; 5903 } 5904 break; 5905 5906 case EXCLUSIVE4: 5907 /* prohibit EXCL create of named attributes */ 5908 if (dvp->v_flag & V_XATTRDIR) { 5909 kmem_free(nm, buflen); 5910 *attrset = 0; 5911 return (NFS4ERR_INVAL); 5912 } 5913 5914 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 5915 cva.va_type = VREG; 5916 /* 5917 * Ensure no time overflows. Assumes underlying 5918 * filesystem supports at least 32 bits. 5919 * Truncate nsec to usec resolution to allow valid 5920 * compares even if the underlying filesystem truncates. 5921 */ 5922 mtime = (timespec32_t *)&args->createhow4_u.createverf; 5923 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 5924 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 5925 cva.va_mode = (mode_t)0; 5926 vap = &cva; 5927 break; 5928 } 5929 5930 status = create_vnode(dvp, nm, vap, args->mode, mtime, 5931 cs->cr, &vp, &created); 5932 kmem_free(nm, buflen); 5933 5934 if (status != NFS4_OK) { 5935 if (ntov_table_init) 5936 nfs4_ntov_table_free(&ntov, &sarg); 5937 *attrset = 0; 5938 return (status); 5939 } 5940 5941 trunc = (setsize && !created); 5942 5943 if (args->mode != EXCLUSIVE4) { 5944 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 5945 5946 /* 5947 * True verification that object was created with correct 5948 * attrs is impossible. The attrs could have been changed 5949 * immediately after object creation. If attributes did 5950 * not verify, the only recourse for the server is to 5951 * destroy the object. Maybe if some attrs (like gid) 5952 * are set incorrectly, the object should be destroyed; 5953 * however, seems bad as a default policy. Do we really 5954 * want to destroy an object over one of the times not 5955 * verifying correctly? For these reasons, the server 5956 * currently sets bits in attrset for createattrs 5957 * that were set; however, no verification is done. 5958 * 5959 * vmask_to_nmask accounts for vattr bits set on create 5960 * [do_rfs4_set_attrs() only sets resp bits for 5961 * non-vattr/vfs bits.] 5962 * Mask off any bits we set by default so as not to return 5963 * more attrset bits than were requested in createattrs 5964 */ 5965 if (created) { 5966 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 5967 *attrset &= createmask; 5968 } else { 5969 /* 5970 * We did not create the vnode (we tried but it 5971 * already existed). In this case, the only createattr 5972 * that the spec allows the server to set is size, 5973 * and even then, it can only be set if it is 0. 5974 */ 5975 *attrset = 0; 5976 if (trunc) 5977 *attrset = FATTR4_SIZE_MASK; 5978 } 5979 } 5980 if (ntov_table_init) 5981 nfs4_ntov_table_free(&ntov, &sarg); 5982 5983 /* 5984 * Get the initial "after" sequence number, if it fails, 5985 * set to zero, time to before. 5986 */ 5987 iva.va_mask = AT_CTIME|AT_SEQ; 5988 if (VOP_GETATTR(dvp, &iva, 0, cs->cr)) { 5989 iva.va_seq = 0; 5990 iva.va_ctime = bva.va_ctime; 5991 } 5992 5993 /* 5994 * create_vnode attempts to create the file exclusive, 5995 * if it already exists the VOP_CREATE will fail and 5996 * may not increase va_seq. It is atomic if 5997 * we haven't changed the directory, but if it has changed 5998 * we don't know what changed it. 5999 */ 6000 if (!created) { 6001 if (bva.va_seq && iva.va_seq && 6002 bva.va_seq == iva.va_seq) 6003 cinfo->atomic = TRUE; 6004 else 6005 cinfo->atomic = FALSE; 6006 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6007 } else { 6008 /* 6009 * The entry was created, we need to sync the 6010 * directory metadata. 6011 */ 6012 (void) VOP_FSYNC(dvp, 0, cs->cr); 6013 6014 /* 6015 * Get "after" change value, if it fails, simply return the 6016 * before value. 6017 */ 6018 ava.va_mask = AT_CTIME|AT_SEQ; 6019 if (VOP_GETATTR(dvp, &ava, 0, cs->cr)) { 6020 ava.va_ctime = bva.va_ctime; 6021 ava.va_seq = 0; 6022 } 6023 6024 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6025 6026 /* 6027 * The cinfo->atomic = TRUE only if we have 6028 * non-zero va_seq's, and it has incremented by exactly one 6029 * during the create_vnode and it didn't 6030 * change during the VOP_FSYNC. 6031 */ 6032 if (bva.va_seq && iva.va_seq && ava.va_seq && 6033 iva.va_seq == (bva.va_seq + 1) && 6034 iva.va_seq == ava.va_seq) 6035 cinfo->atomic = TRUE; 6036 else 6037 cinfo->atomic = FALSE; 6038 } 6039 6040 /* Check for mandatory locking and that the size gets set. */ 6041 cva.va_mask = AT_MODE; 6042 if (setsize) 6043 cva.va_mask |= AT_SIZE; 6044 6045 /* Assume the worst */ 6046 cs->mandlock = TRUE; 6047 6048 if (VOP_GETATTR(vp, &cva, 0, cs->cr) == 0) { 6049 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6050 6051 /* 6052 * Truncate the file if necessary; this would be 6053 * the case for create over an existing file. 6054 */ 6055 6056 if (trunc) { 6057 int in_crit = 0; 6058 rfs4_file_t *fp; 6059 bool_t create = FALSE; 6060 6061 /* 6062 * We are writing over an existing file. 6063 * Check to see if we need to recall a delegation. 6064 */ 6065 rfs4_hold_deleg_policy(); 6066 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6067 if (rfs4_check_delegated_byfp(FWRITE, fp, 6068 (reqsize == 0), FALSE, FALSE, 6069 &clientid)) { 6070 6071 rfs4_file_rele(fp); 6072 rfs4_rele_deleg_policy(); 6073 VN_RELE(vp); 6074 *attrset = 0; 6075 return (NFS4ERR_DELAY); 6076 } 6077 rfs4_file_rele(fp); 6078 } 6079 rfs4_rele_deleg_policy(); 6080 6081 if (nbl_need_check(vp)) { 6082 in_crit = 1; 6083 6084 ASSERT(reqsize == 0); 6085 6086 nbl_start_crit(vp, RW_READER); 6087 if (nbl_conflict(vp, NBL_WRITE, 0, 6088 cva.va_size, 0)) { 6089 in_crit = 0; 6090 nbl_end_crit(vp); 6091 VN_RELE(vp); 6092 *attrset = 0; 6093 return (NFS4ERR_ACCESS); 6094 } 6095 } 6096 ct.cc_sysid = 0; 6097 ct.cc_pid = 0; 6098 ct.cc_caller_id = nfs4_srv_caller_id; 6099 6100 cva.va_mask = AT_SIZE; 6101 cva.va_size = reqsize; 6102 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6103 if (in_crit) 6104 nbl_end_crit(vp); 6105 } 6106 } 6107 6108 error = makefh4(&cs->fh, vp, cs->exi); 6109 6110 /* 6111 * Force modified data and metadata out to stable storage. 6112 */ 6113 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr); 6114 6115 if (error) { 6116 VN_RELE(vp); 6117 *attrset = 0; 6118 return (puterrno4(error)); 6119 } 6120 6121 /* if parent dir is attrdir, set namedattr fh flag */ 6122 if (dvp->v_flag & V_XATTRDIR) 6123 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6124 6125 if (cs->vp) 6126 VN_RELE(cs->vp); 6127 6128 cs->vp = vp; 6129 6130 /* 6131 * if we did not create the file, we will need to check 6132 * the access bits on the file 6133 */ 6134 6135 if (!created) { 6136 if (setsize) 6137 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6138 status = check_open_access(args->share_access, cs, req); 6139 if (status != NFS4_OK) 6140 *attrset = 0; 6141 } 6142 return (status); 6143 } 6144 6145 /*ARGSUSED*/ 6146 static void 6147 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6148 rfs4_openowner_t *oo, delegreq_t deleg, 6149 uint32_t access, uint32_t deny, 6150 OPEN4res *resp) 6151 { 6152 /* XXX Currently not using req */ 6153 rfs4_state_t *state; 6154 rfs4_file_t *file; 6155 bool_t screate = TRUE; 6156 bool_t fcreate = TRUE; 6157 uint32_t amodes; 6158 uint32_t dmodes; 6159 rfs4_deleg_state_t *dsp; 6160 struct shrlock shr; 6161 struct shr_locowner shr_loco; 6162 sysid_t sysid; 6163 nfsstat4 status; 6164 int fflags = 0; 6165 int recall = 0; 6166 int err; 6167 6168 /* get the file struct and hold a lock on it during initial open */ 6169 file = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6170 if (file == NULL) { 6171 NFS4_DEBUG(rfs4_debug, 6172 (CE_NOTE, "rfs4_do_open: can't find file")); 6173 resp->status = NFS4ERR_SERVERFAULT; 6174 return; 6175 } 6176 6177 state = rfs4_findstate_by_owner_file(oo, file, &screate); 6178 if (state == NULL) { 6179 NFS4_DEBUG(rfs4_debug, 6180 (CE_NOTE, "rfs4_do_open: can't find state")); 6181 resp->status = NFS4ERR_RESOURCE; 6182 /* No need to keep any reference */ 6183 rfs4_file_rele_withunlock(file); 6184 return; 6185 } 6186 6187 /* try to get the sysid before continuing */ 6188 if ((status = rfs4_client_sysid(oo->client, &sysid)) != NFS4_OK) { 6189 resp->status = status; 6190 rfs4_file_rele(file); 6191 /* Not a fully formed open; "close" it */ 6192 if (screate == TRUE) 6193 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6194 rfs4_state_rele(state); 6195 return; 6196 } 6197 6198 /* 6199 * Calculate the new deny and access mode that this open is adding to 6200 * the file for this open owner; 6201 */ 6202 dmodes = (deny & ~state->share_deny); 6203 amodes = (access & ~state->share_access); 6204 6205 /* 6206 * Check to see the client has already sent an open for this 6207 * open owner on this file with the same share/deny modes. 6208 * If so, we don't need to check for a conflict and we don't 6209 * need to add another shrlock. If not, then we need to 6210 * check for conflicts in deny and access before checking for 6211 * conflicts in delegation. We don't want to recall a 6212 * delegation based on an open that will eventually fail based 6213 * on shares modes. 6214 */ 6215 6216 if (dmodes || amodes) { 6217 shr.s_access = (short)access; 6218 shr.s_deny = (short)deny; 6219 shr.s_pid = rfs4_dbe_getid(oo->dbe); 6220 shr.s_sysid = sysid; 6221 shr_loco.sl_pid = shr.s_pid; 6222 shr_loco.sl_id = shr.s_sysid; 6223 shr.s_owner = (caddr_t)&shr_loco; 6224 shr.s_own_len = sizeof (shr_loco); 6225 6226 fflags = 0; 6227 if (access & OPEN4_SHARE_ACCESS_READ) 6228 fflags |= FREAD; 6229 if (access & OPEN4_SHARE_ACCESS_WRITE) 6230 fflags |= FWRITE; 6231 6232 if ((err = vop_shrlock(cs->vp, F_SHARE, &shr, fflags)) != 0) { 6233 6234 resp->status = err == EAGAIN ? 6235 NFS4ERR_SHARE_DENIED : puterrno4(err); 6236 6237 rfs4_file_rele(file); 6238 /* Not a fully formed open; "close" it */ 6239 if (screate == TRUE) 6240 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6241 rfs4_state_rele(state); 6242 return; 6243 } 6244 } 6245 6246 rfs4_dbe_lock(state->dbe); 6247 rfs4_dbe_lock(file->dbe); 6248 6249 /* 6250 * Check to see if this file is delegated and if so, if a 6251 * recall needs to be done. 6252 */ 6253 if (rfs4_check_recall(state, access)) { 6254 rfs4_dbe_unlock(file->dbe); 6255 rfs4_dbe_unlock(state->dbe); 6256 rfs4_recall_deleg(file, FALSE, state->owner->client); 6257 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6258 rfs4_dbe_lock(state->dbe); 6259 rfs4_dbe_lock(file->dbe); 6260 /* Let's see if the delegation was returned */ 6261 if (rfs4_check_recall(state, access)) { 6262 rfs4_dbe_unlock(file->dbe); 6263 rfs4_dbe_unlock(state->dbe); 6264 rfs4_file_rele(file); 6265 rfs4_update_lease(state->owner->client); 6266 /* recalculate flags to match what was added */ 6267 fflags = 0; 6268 if (amodes & OPEN4_SHARE_ACCESS_READ) 6269 fflags |= FREAD; 6270 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6271 fflags |= FWRITE; 6272 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6273 /* Not a fully formed open; "close" it */ 6274 if (screate == TRUE) 6275 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6276 rfs4_state_rele(state); 6277 resp->status = NFS4ERR_DELAY; 6278 return; 6279 } 6280 } 6281 6282 if (dmodes & OPEN4_SHARE_DENY_READ) 6283 file->deny_read++; 6284 if (dmodes & OPEN4_SHARE_DENY_WRITE) 6285 file->deny_write++; 6286 file->share_deny |= deny; 6287 state->share_deny |= deny; 6288 6289 if (amodes & OPEN4_SHARE_ACCESS_READ) 6290 file->access_read++; 6291 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6292 file->access_write++; 6293 file->share_access |= access; 6294 state->share_access |= access; 6295 6296 /* 6297 * Check for delegation here. if the deleg argument is not 6298 * DELEG_ANY, then this is a reclaim from a client and 6299 * we must honor the delegation requested. If necessary we can 6300 * set the recall flag. 6301 */ 6302 6303 dsp = rfs4_grant_delegation(deleg, state, &recall); 6304 6305 cs->deleg = (file->dinfo->dtype == OPEN_DELEGATE_WRITE); 6306 6307 next_stateid(&state->stateid); 6308 6309 resp->stateid = state->stateid.stateid; 6310 6311 rfs4_dbe_unlock(file->dbe); 6312 rfs4_dbe_unlock(state->dbe); 6313 6314 if (dsp) { 6315 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6316 rfs4_deleg_state_rele(dsp); 6317 } 6318 6319 rfs4_file_rele(file); 6320 rfs4_state_rele(state); 6321 6322 resp->status = NFS4_OK; 6323 } 6324 6325 /*ARGSUSED*/ 6326 static void 6327 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6328 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6329 { 6330 change_info4 *cinfo = &resp->cinfo; 6331 bitmap4 *attrset = &resp->attrset; 6332 6333 if (args->opentype == OPEN4_NOCREATE) 6334 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6335 req, cs, args->share_access, cinfo); 6336 else { 6337 /* inhibit delegation grants during exclusive create */ 6338 6339 if (args->mode == EXCLUSIVE4) 6340 rfs4_disable_delegation(); 6341 6342 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6343 oo->client->clientid); 6344 } 6345 6346 if (resp->status == NFS4_OK) { 6347 6348 /* cs->vp cs->fh now reference the desired file */ 6349 6350 rfs4_do_open(cs, req, oo, DELEG_ANY, args->share_access, 6351 args->share_deny, resp); 6352 6353 /* 6354 * If rfs4_createfile set attrset, we must 6355 * clear this attrset before the response is copied. 6356 */ 6357 if (resp->status != NFS4_OK && resp->attrset) { 6358 resp->attrset = 0; 6359 } 6360 } 6361 else 6362 *cs->statusp = resp->status; 6363 6364 if (args->mode == EXCLUSIVE4) 6365 rfs4_enable_delegation(); 6366 } 6367 6368 /*ARGSUSED*/ 6369 static void 6370 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6371 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6372 { 6373 change_info4 *cinfo = &resp->cinfo; 6374 vattr_t va; 6375 vtype_t v_type = cs->vp->v_type; 6376 int error = 0; 6377 6378 /* Verify that we have a regular file */ 6379 if (v_type != VREG) { 6380 if (v_type == VDIR) 6381 resp->status = NFS4ERR_ISDIR; 6382 else if (v_type == VLNK) 6383 resp->status = NFS4ERR_SYMLINK; 6384 else 6385 resp->status = NFS4ERR_INVAL; 6386 return; 6387 } 6388 6389 va.va_mask = AT_MODE|AT_UID; 6390 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr); 6391 if (error) { 6392 resp->status = puterrno4(error); 6393 return; 6394 } 6395 6396 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 6397 6398 /* 6399 * Check if we have access to the file, Note the the file 6400 * could have originally been open UNCHECKED or GUARDED 6401 * with mode bits that will now fail, but there is nothing 6402 * we can really do about that except in the case that the 6403 * owner of the file is the one requesting the open. 6404 */ 6405 if (crgetuid(cs->cr) != va.va_uid) { 6406 resp->status = check_open_access(args->share_access, cs, req); 6407 if (resp->status != NFS4_OK) { 6408 return; 6409 } 6410 } 6411 6412 /* 6413 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 6414 */ 6415 cinfo->before = 0; 6416 cinfo->after = 0; 6417 cinfo->atomic = FALSE; 6418 6419 rfs4_do_open(cs, req, oo, 6420 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 6421 args->share_access, args->share_deny, resp); 6422 } 6423 6424 static void 6425 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 6426 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6427 { 6428 int error; 6429 nfsstat4 status; 6430 stateid4 stateid = 6431 args->open_claim4_u.delegate_cur_info.delegate_stateid; 6432 rfs4_deleg_state_t *dsp; 6433 6434 /* 6435 * Find the state info from the stateid and confirm that the 6436 * file is delegated. If the state openowner is the same as 6437 * the supplied openowner we're done. If not, get the file 6438 * info from the found state info. Use that file info to 6439 * create the state for this lock owner. Note solaris doen't 6440 * really need the pathname to find the file. We may want to 6441 * lookup the pathname and make sure that the vp exist and 6442 * matches the vp in the file structure. However it is 6443 * possible that the pathname nolonger exists (local process 6444 * unlinks the file), so this may not be that useful. 6445 */ 6446 6447 status = rfs4_get_deleg_state(&stateid, &dsp); 6448 if (status != NFS4_OK) { 6449 resp->status = status; 6450 return; 6451 } 6452 6453 ASSERT(dsp->finfo->dinfo->dtype != OPEN_DELEGATE_NONE); 6454 6455 /* 6456 * New lock owner, create state. Since this was probably called 6457 * in response to a CB_RECALL we set deleg to DELEG_NONE 6458 */ 6459 6460 ASSERT(cs->vp != NULL); 6461 VN_RELE(cs->vp); 6462 VN_HOLD(dsp->finfo->vp); 6463 cs->vp = dsp->finfo->vp; 6464 6465 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 6466 rfs4_deleg_state_rele(dsp); 6467 *cs->statusp = resp->status = puterrno4(error); 6468 return; 6469 } 6470 6471 /* Mark progress for delegation returns */ 6472 dsp->finfo->dinfo->time_lastwrite = gethrestime_sec(); 6473 rfs4_deleg_state_rele(dsp); 6474 rfs4_do_open(cs, req, oo, DELEG_NONE, 6475 args->share_access, args->share_deny, resp); 6476 } 6477 6478 /*ARGSUSED*/ 6479 static void 6480 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 6481 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6482 { 6483 /* 6484 * Lookup the pathname, it must already exist since this file 6485 * was delegated. 6486 * 6487 * Find the file and state info for this vp and open owner pair. 6488 * check that they are in fact delegated. 6489 * check that the state access and deny modes are the same. 6490 * 6491 * Return the delgation possibly seting the recall flag. 6492 */ 6493 rfs4_file_t *file; 6494 rfs4_state_t *state; 6495 bool_t create = FALSE; 6496 bool_t dcreate = FALSE; 6497 rfs4_deleg_state_t *dsp; 6498 nfsace4 *ace; 6499 6500 6501 /* Note we ignore oflags */ 6502 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 6503 req, cs, args->share_access, &resp->cinfo); 6504 6505 if (resp->status != NFS4_OK) { 6506 return; 6507 } 6508 6509 /* get the file struct and hold a lock on it during initial open */ 6510 file = rfs4_findfile_withlock(cs->vp, NULL, &create); 6511 if (file == NULL) { 6512 NFS4_DEBUG(rfs4_debug, 6513 (CE_NOTE, "rfs4_do_opendelprev: can't find file")); 6514 resp->status = NFS4ERR_SERVERFAULT; 6515 return; 6516 } 6517 6518 state = rfs4_findstate_by_owner_file(oo, file, &create); 6519 if (state == NULL) { 6520 NFS4_DEBUG(rfs4_debug, 6521 (CE_NOTE, "rfs4_do_opendelprev: can't find state")); 6522 resp->status = NFS4ERR_SERVERFAULT; 6523 rfs4_file_rele_withunlock(file); 6524 return; 6525 } 6526 6527 rfs4_dbe_lock(state->dbe); 6528 rfs4_dbe_lock(file->dbe); 6529 if (args->share_access != state->share_access || 6530 args->share_deny != state->share_deny || 6531 state->finfo->dinfo->dtype == OPEN_DELEGATE_NONE) { 6532 NFS4_DEBUG(rfs4_debug, 6533 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 6534 rfs4_dbe_unlock(file->dbe); 6535 rfs4_dbe_unlock(state->dbe); 6536 rfs4_file_rele(file); 6537 rfs4_state_rele(state); 6538 resp->status = NFS4ERR_SERVERFAULT; 6539 return; 6540 } 6541 rfs4_dbe_unlock(file->dbe); 6542 rfs4_dbe_unlock(state->dbe); 6543 6544 dsp = rfs4_finddeleg(state, &dcreate); 6545 if (dsp == NULL) { 6546 rfs4_state_rele(state); 6547 rfs4_file_rele(file); 6548 resp->status = NFS4ERR_SERVERFAULT; 6549 return; 6550 } 6551 6552 next_stateid(&state->stateid); 6553 6554 resp->stateid = state->stateid.stateid; 6555 6556 resp->delegation.delegation_type = dsp->dtype; 6557 6558 if (dsp->dtype == OPEN_DELEGATE_READ) { 6559 open_read_delegation4 *rv = 6560 &resp->delegation.open_delegation4_u.read; 6561 6562 rv->stateid = dsp->delegid.stateid; 6563 rv->recall = FALSE; /* no policy in place to set to TRUE */ 6564 ace = &rv->permissions; 6565 } else { 6566 open_write_delegation4 *rv = 6567 &resp->delegation.open_delegation4_u.write; 6568 6569 rv->stateid = dsp->delegid.stateid; 6570 rv->recall = FALSE; /* no policy in place to set to TRUE */ 6571 ace = &rv->permissions; 6572 rv->space_limit.limitby = NFS_LIMIT_SIZE; 6573 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 6574 } 6575 6576 /* XXX For now */ 6577 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 6578 ace->flag = 0; 6579 ace->access_mask = 0; 6580 ace->who.utf8string_len = 0; 6581 ace->who.utf8string_val = 0; 6582 6583 rfs4_deleg_state_rele(dsp); 6584 rfs4_state_rele(state); 6585 rfs4_file_rele(file); 6586 } 6587 6588 typedef enum { 6589 NFS4_CHKSEQ_OKAY = 0, 6590 NFS4_CHKSEQ_REPLAY = 1, 6591 NFS4_CHKSEQ_BAD = 2 6592 } rfs4_chkseq_t; 6593 6594 /* 6595 * Generic function for sequence number checks. 6596 */ 6597 static rfs4_chkseq_t 6598 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 6599 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 6600 { 6601 /* Same sequence ids and matching operations? */ 6602 if (seqid == rqst_seq && resop->resop == lastop->resop) { 6603 if (copyres == TRUE) { 6604 rfs4_free_reply(resop); 6605 rfs4_copy_reply(resop, lastop); 6606 } 6607 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6608 "Replayed SEQID %d\n", seqid)); 6609 return (NFS4_CHKSEQ_REPLAY); 6610 } 6611 6612 /* If the incoming sequence is not the next expected then it is bad */ 6613 if (rqst_seq != seqid + 1) { 6614 if (rqst_seq == seqid) { 6615 NFS4_DEBUG(rfs4_debug, 6616 (CE_NOTE, "BAD SEQID: Replayed sequence id " 6617 "but last op was %d current op is %d\n", 6618 lastop->resop, resop->resop)); 6619 return (NFS4_CHKSEQ_BAD); 6620 } 6621 NFS4_DEBUG(rfs4_debug, 6622 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 6623 rqst_seq, seqid)); 6624 return (NFS4_CHKSEQ_BAD); 6625 } 6626 6627 /* Everything okay -- next expected */ 6628 return (NFS4_CHKSEQ_OKAY); 6629 } 6630 6631 6632 static rfs4_chkseq_t 6633 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 6634 { 6635 rfs4_chkseq_t rc; 6636 6637 rfs4_dbe_lock(op->dbe); 6638 rc = rfs4_check_seqid(op->open_seqid, op->reply, seqid, resop, TRUE); 6639 rfs4_dbe_unlock(op->dbe); 6640 6641 if (rc == NFS4_CHKSEQ_OKAY) 6642 rfs4_update_lease(op->client); 6643 6644 return (rc); 6645 } 6646 6647 static rfs4_chkseq_t 6648 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, 6649 nfs_resop4 *resop) 6650 { 6651 rfs4_chkseq_t rc; 6652 6653 rfs4_dbe_lock(op->dbe); 6654 rc = rfs4_check_seqid(op->open_seqid, op->reply, 6655 olo_seqid, resop, FALSE); 6656 rfs4_dbe_unlock(op->dbe); 6657 6658 return (rc); 6659 } 6660 6661 static rfs4_chkseq_t 6662 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lp, nfs_resop4 *resop) 6663 { 6664 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 6665 6666 rfs4_dbe_lock(lp->dbe); 6667 if (!lp->skip_seqid_check) 6668 rc = rfs4_check_seqid(lp->seqid, lp->reply, 6669 seqid, resop, TRUE); 6670 rfs4_dbe_unlock(lp->dbe); 6671 6672 return (rc); 6673 } 6674 6675 static void 6676 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 6677 struct svc_req *req, struct compound_state *cs) 6678 { 6679 OPEN4args *args = &argop->nfs_argop4_u.opopen; 6680 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 6681 open_owner4 *owner = &args->owner; 6682 open_claim_type4 claim = args->claim; 6683 rfs4_client_t *cp; 6684 rfs4_openowner_t *oo; 6685 bool_t create; 6686 bool_t replay = FALSE; 6687 int can_reclaim; 6688 6689 6690 if (cs->vp == NULL) { 6691 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 6692 return; 6693 } 6694 6695 /* 6696 * Need to check clientid and lease expiration first based on 6697 * error ordering and incrementing sequence id. 6698 */ 6699 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 6700 if (cp == NULL) { 6701 *cs->statusp = resp->status = 6702 rfs4_check_clientid(&owner->clientid, 0); 6703 return; 6704 } 6705 6706 if (rfs4_lease_expired(cp)) { 6707 rfs4_client_close(cp); 6708 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 6709 return; 6710 } 6711 can_reclaim = cp->can_reclaim; 6712 6713 /* 6714 * Find the open_owner for use from this point forward. Take 6715 * care in updating the sequence id based on the type of error 6716 * being returned. 6717 */ 6718 retry: 6719 create = TRUE; 6720 oo = rfs4_findopenowner(owner, &create, args->seqid); 6721 if (oo == NULL) { 6722 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 6723 rfs4_client_rele(cp); 6724 return; 6725 } 6726 6727 /* Hold off access to the sequence space while the open is done */ 6728 rfs4_sw_enter(&oo->oo_sw); 6729 6730 /* 6731 * If the open_owner existed before at the server, then check 6732 * the sequence id. 6733 */ 6734 if (!create && !oo->postpone_confirm) { 6735 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 6736 case NFS4_CHKSEQ_BAD: 6737 if ((args->seqid > oo->open_seqid) && 6738 oo->need_confirm) { 6739 rfs4_free_opens(oo, TRUE, FALSE); 6740 rfs4_sw_exit(&oo->oo_sw); 6741 rfs4_openowner_rele(oo); 6742 goto retry; 6743 } 6744 resp->status = NFS4ERR_BAD_SEQID; 6745 goto out; 6746 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 6747 replay = TRUE; 6748 goto out; 6749 default: 6750 break; 6751 } 6752 6753 /* 6754 * Sequence was ok and open owner exists 6755 * check to see if we have yet to see an 6756 * open_confirm. 6757 */ 6758 if (oo->need_confirm) { 6759 rfs4_free_opens(oo, TRUE, FALSE); 6760 rfs4_sw_exit(&oo->oo_sw); 6761 rfs4_openowner_rele(oo); 6762 goto retry; 6763 } 6764 } 6765 /* Grace only applies to regular-type OPENs */ 6766 if (rfs4_clnt_in_grace(cp) && 6767 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 6768 *cs->statusp = resp->status = NFS4ERR_GRACE; 6769 goto out; 6770 } 6771 6772 /* 6773 * If previous state at the server existed then can_reclaim 6774 * will be set. If not reply NFS4ERR_NO_GRACE to the 6775 * client. 6776 */ 6777 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 6778 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 6779 goto out; 6780 } 6781 6782 6783 /* 6784 * Reject the open if the client has missed the grace period 6785 */ 6786 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 6787 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 6788 goto out; 6789 } 6790 6791 /* Couple of up-front bookkeeping items */ 6792 if (oo->need_confirm) { 6793 /* 6794 * If this is a reclaim OPEN then we should not ask 6795 * for a confirmation of the open_owner per the 6796 * protocol specification. 6797 */ 6798 if (claim == CLAIM_PREVIOUS) 6799 oo->need_confirm = FALSE; 6800 else 6801 resp->rflags |= OPEN4_RESULT_CONFIRM; 6802 } 6803 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 6804 6805 /* 6806 * If there is an unshared filesystem mounted on this vnode, 6807 * do not allow to open/create in this directory. 6808 */ 6809 if (vn_ismntpt(cs->vp)) { 6810 *cs->statusp = resp->status = NFS4ERR_ACCESS; 6811 goto out; 6812 } 6813 6814 /* 6815 * access must READ, WRITE, or BOTH. No access is invalid. 6816 * deny can be READ, WRITE, BOTH, or NONE. 6817 * bits not defined for access/deny are invalid. 6818 */ 6819 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 6820 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 6821 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 6822 *cs->statusp = resp->status = NFS4ERR_INVAL; 6823 goto out; 6824 } 6825 6826 6827 /* 6828 * make sure attrset is zero before response is built. 6829 */ 6830 resp->attrset = 0; 6831 6832 switch (claim) { 6833 case CLAIM_NULL: 6834 rfs4_do_opennull(cs, req, args, oo, resp); 6835 break; 6836 case CLAIM_PREVIOUS: 6837 rfs4_do_openprev(cs, req, args, oo, resp); 6838 break; 6839 case CLAIM_DELEGATE_CUR: 6840 rfs4_do_opendelcur(cs, req, args, oo, resp); 6841 break; 6842 case CLAIM_DELEGATE_PREV: 6843 rfs4_do_opendelprev(cs, req, args, oo, resp); 6844 break; 6845 default: 6846 resp->status = NFS4ERR_INVAL; 6847 break; 6848 } 6849 6850 out: 6851 rfs4_client_rele(cp); 6852 6853 /* Catch sequence id handling here to make it a little easier */ 6854 switch (resp->status) { 6855 case NFS4ERR_BADXDR: 6856 case NFS4ERR_BAD_SEQID: 6857 case NFS4ERR_BAD_STATEID: 6858 case NFS4ERR_NOFILEHANDLE: 6859 case NFS4ERR_RESOURCE: 6860 case NFS4ERR_STALE_CLIENTID: 6861 case NFS4ERR_STALE_STATEID: 6862 /* 6863 * The protocol states that if any of these errors are 6864 * being returned, the sequence id should not be 6865 * incremented. Any other return requires an 6866 * increment. 6867 */ 6868 break; 6869 default: 6870 /* Always update the lease in this case */ 6871 rfs4_update_lease(oo->client); 6872 6873 /* Regular response - copy the result */ 6874 if (!replay) 6875 rfs4_update_open_resp(oo, resop, &cs->fh); 6876 6877 /* 6878 * REPLAY case: Only if the previous response was OK 6879 * do we copy the filehandle. If not OK, no 6880 * filehandle to copy. 6881 */ 6882 if (replay == TRUE && 6883 resp->status == NFS4_OK && 6884 oo->reply_fh.nfs_fh4_val) { 6885 /* 6886 * If this is a replay, we must restore the 6887 * current filehandle/vp to that of what was 6888 * returned originally. Try our best to do 6889 * it. 6890 */ 6891 nfs_fh4_fmt_t *fh_fmtp = 6892 (nfs_fh4_fmt_t *)oo->reply_fh.nfs_fh4_val; 6893 6894 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 6895 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 6896 6897 if (cs->exi == NULL) { 6898 resp->status = NFS4ERR_STALE; 6899 goto finish; 6900 } 6901 6902 VN_RELE(cs->vp); 6903 6904 cs->vp = nfs4_fhtovp(&oo->reply_fh, cs->exi, 6905 &resp->status); 6906 6907 if (cs->vp == NULL) 6908 goto finish; 6909 6910 nfs_fh4_copy(&oo->reply_fh, &cs->fh); 6911 } 6912 6913 /* 6914 * If this was a replay, no need to update the 6915 * sequence id. If the open_owner was not created on 6916 * this pass, then update. The first use of an 6917 * open_owner will not bump the sequence id. 6918 */ 6919 if (replay == FALSE && !create) 6920 rfs4_update_open_sequence(oo); 6921 /* 6922 * If the client is receiving an error and the 6923 * open_owner needs to be confirmed, there is no way 6924 * to notify the client of this fact ignoring the fact 6925 * that the server has no method of returning a 6926 * stateid to confirm. Therefore, the server needs to 6927 * mark this open_owner in a way as to avoid the 6928 * sequence id checking the next time the client uses 6929 * this open_owner. 6930 */ 6931 if (resp->status != NFS4_OK && oo->need_confirm) 6932 oo->postpone_confirm = TRUE; 6933 /* 6934 * If OK response then clear the postpone flag and 6935 * reset the sequence id to keep in sync with the 6936 * client. 6937 */ 6938 if (resp->status == NFS4_OK && oo->postpone_confirm) { 6939 oo->postpone_confirm = FALSE; 6940 oo->open_seqid = args->seqid; 6941 } 6942 break; 6943 } 6944 6945 finish: 6946 *cs->statusp = resp->status; 6947 6948 rfs4_sw_exit(&oo->oo_sw); 6949 rfs4_openowner_rele(oo); 6950 } 6951 6952 /*ARGSUSED*/ 6953 void 6954 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 6955 struct svc_req *req, struct compound_state *cs) 6956 { 6957 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 6958 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 6959 rfs4_state_t *sp; 6960 nfsstat4 status; 6961 6962 if (cs->vp == NULL) { 6963 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 6964 return; 6965 } 6966 6967 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 6968 if (status != NFS4_OK) { 6969 *cs->statusp = resp->status = status; 6970 return; 6971 } 6972 6973 /* Ensure specified filehandle matches */ 6974 if (cs->vp != sp->finfo->vp) { 6975 rfs4_state_rele(sp); 6976 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 6977 return; 6978 } 6979 6980 /* hold off other access to open_owner while we tinker */ 6981 rfs4_sw_enter(&sp->owner->oo_sw); 6982 6983 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 6984 case NFS4_CHECK_STATEID_OKAY: 6985 if (rfs4_check_open_seqid(args->seqid, sp->owner, 6986 resop) != 0) { 6987 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 6988 break; 6989 } 6990 /* 6991 * If it is the appropriate stateid and determined to 6992 * be "OKAY" then this means that the stateid does not 6993 * need to be confirmed and the client is in error for 6994 * sending an OPEN_CONFIRM. 6995 */ 6996 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 6997 break; 6998 case NFS4_CHECK_STATEID_OLD: 6999 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7000 break; 7001 case NFS4_CHECK_STATEID_BAD: 7002 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7003 break; 7004 case NFS4_CHECK_STATEID_EXPIRED: 7005 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7006 break; 7007 case NFS4_CHECK_STATEID_CLOSED: 7008 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7009 break; 7010 case NFS4_CHECK_STATEID_REPLAY: 7011 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7012 case NFS4_CHKSEQ_OKAY: 7013 /* 7014 * This is replayed stateid; if seqid matches 7015 * next expected, then client is using wrong seqid. 7016 */ 7017 /* fall through */ 7018 case NFS4_CHKSEQ_BAD: 7019 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7020 break; 7021 case NFS4_CHKSEQ_REPLAY: 7022 /* 7023 * Note this case is the duplicate case so 7024 * resp->status is already set. 7025 */ 7026 *cs->statusp = resp->status; 7027 rfs4_update_lease(sp->owner->client); 7028 break; 7029 } 7030 break; 7031 case NFS4_CHECK_STATEID_UNCONFIRMED: 7032 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7033 resop) != NFS4_CHKSEQ_OKAY) { 7034 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7035 break; 7036 } 7037 *cs->statusp = resp->status = NFS4_OK; 7038 7039 next_stateid(&sp->stateid); 7040 resp->open_stateid = sp->stateid.stateid; 7041 sp->owner->need_confirm = FALSE; 7042 rfs4_update_lease(sp->owner->client); 7043 rfs4_update_open_sequence(sp->owner); 7044 rfs4_update_open_resp(sp->owner, resop, NULL); 7045 break; 7046 default: 7047 ASSERT(FALSE); 7048 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7049 break; 7050 } 7051 rfs4_sw_exit(&sp->owner->oo_sw); 7052 rfs4_state_rele(sp); 7053 } 7054 7055 /*ARGSUSED*/ 7056 void 7057 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7058 struct svc_req *req, struct compound_state *cs) 7059 { 7060 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7061 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7062 uint32_t access = args->share_access; 7063 uint32_t deny = args->share_deny; 7064 nfsstat4 status; 7065 rfs4_state_t *sp; 7066 rfs4_file_t *fp; 7067 7068 if (cs->vp == NULL) { 7069 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7070 return; 7071 } 7072 7073 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7074 if (status != NFS4_OK) { 7075 *cs->statusp = resp->status = status; 7076 return; 7077 } 7078 7079 /* Ensure specified filehandle matches */ 7080 if (cs->vp != sp->finfo->vp) { 7081 rfs4_state_rele(sp); 7082 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7083 return; 7084 } 7085 7086 /* hold off other access to open_owner while we tinker */ 7087 rfs4_sw_enter(&sp->owner->oo_sw); 7088 7089 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7090 case NFS4_CHECK_STATEID_OKAY: 7091 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7092 resop) != NFS4_CHKSEQ_OKAY) { 7093 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7094 goto end; 7095 } 7096 break; 7097 case NFS4_CHECK_STATEID_OLD: 7098 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7099 goto end; 7100 case NFS4_CHECK_STATEID_BAD: 7101 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7102 goto end; 7103 case NFS4_CHECK_STATEID_EXPIRED: 7104 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7105 goto end; 7106 case NFS4_CHECK_STATEID_CLOSED: 7107 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7108 goto end; 7109 case NFS4_CHECK_STATEID_UNCONFIRMED: 7110 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7111 goto end; 7112 case NFS4_CHECK_STATEID_REPLAY: 7113 /* Check the sequence id for the open owner */ 7114 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7115 case NFS4_CHKSEQ_OKAY: 7116 /* 7117 * This is replayed stateid; if seqid matches 7118 * next expected, then client is using wrong seqid. 7119 */ 7120 /* fall through */ 7121 case NFS4_CHKSEQ_BAD: 7122 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7123 goto end; 7124 case NFS4_CHKSEQ_REPLAY: 7125 /* 7126 * Note this case is the duplicate case so 7127 * resp->status is already set. 7128 */ 7129 *cs->statusp = resp->status; 7130 rfs4_update_lease(sp->owner->client); 7131 goto end; 7132 } 7133 break; 7134 default: 7135 ASSERT(FALSE); 7136 break; 7137 } 7138 7139 rfs4_dbe_lock(sp->dbe); 7140 /* 7141 * Check that the new access modes and deny modes are valid. 7142 * Check that no invalid bits are set. 7143 */ 7144 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7145 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_READ))) { 7146 *cs->statusp = resp->status = NFS4ERR_INVAL; 7147 rfs4_update_open_sequence(sp->owner); 7148 rfs4_dbe_unlock(sp->dbe); 7149 goto end; 7150 } 7151 7152 /* 7153 * The new modes must be a subset of the current modes and 7154 * the access must specify at least one mode. To test that 7155 * the new mode is a subset of the current modes we bitwise 7156 * AND them together and check that the result equals the new 7157 * mode. For example: 7158 * New mode, access == R and current mode, sp->share_access == RW 7159 * access & sp->share_access == R == access, so the new access mode 7160 * is valid. Consider access == RW, sp->share_access = R 7161 * access & sp->share_access == R != access, so the new access mode 7162 * is invalid. 7163 */ 7164 if ((access & sp->share_access) != access || 7165 (deny & sp->share_deny) != deny || 7166 (access & 7167 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7168 *cs->statusp = resp->status = NFS4ERR_INVAL; 7169 rfs4_update_open_sequence(sp->owner); 7170 rfs4_dbe_unlock(sp->dbe); 7171 goto end; 7172 } 7173 7174 /* 7175 * Release any share locks associated with this stateID. 7176 * Strictly speaking, this violates the spec because the 7177 * spec effectively requires that open downgrade be atomic. 7178 * At present, fs_shrlock does not have this capability. 7179 */ 7180 rfs4_dbe_unlock(sp->dbe); 7181 rfs4_unshare(sp); 7182 rfs4_dbe_lock(sp->dbe); 7183 7184 fp = sp->finfo; 7185 rfs4_dbe_lock(fp->dbe); 7186 7187 /* 7188 * If the current mode has deny read and the new mode 7189 * does not, decrement the number of deny read mode bits 7190 * and if it goes to zero turn off the deny read bit 7191 * on the file. 7192 */ 7193 if ((sp->share_deny & OPEN4_SHARE_DENY_READ) && 7194 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7195 fp->deny_read--; 7196 if (fp->deny_read == 0) 7197 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 7198 } 7199 7200 /* 7201 * If the current mode has deny write and the new mode 7202 * does not, decrement the number of deny write mode bits 7203 * and if it goes to zero turn off the deny write bit 7204 * on the file. 7205 */ 7206 if ((sp->share_deny & OPEN4_SHARE_DENY_WRITE) && 7207 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7208 fp->deny_write--; 7209 if (fp->deny_write == 0) 7210 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7211 } 7212 7213 /* 7214 * If the current mode has access read and the new mode 7215 * does not, decrement the number of access read mode bits 7216 * and if it goes to zero turn off the access read bit 7217 * on the file. 7218 */ 7219 if ((sp->share_access & OPEN4_SHARE_ACCESS_READ) && 7220 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7221 fp->access_read--; 7222 if (fp->access_read == 0) 7223 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7224 } 7225 7226 /* 7227 * If the current mode has access write and the new mode 7228 * does not, decrement the number of access write mode bits 7229 * and if it goes to zero turn off the access write bit 7230 * on the file. 7231 */ 7232 if ((sp->share_access & OPEN4_SHARE_ACCESS_WRITE) && 7233 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7234 fp->access_write--; 7235 if (fp->access_write == 0) 7236 fp->share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7237 } 7238 7239 /* Set the new access and deny modes */ 7240 sp->share_access = access; 7241 sp->share_deny = deny; 7242 /* Check that the file is still accessible */ 7243 ASSERT(fp->share_access); 7244 7245 rfs4_dbe_unlock(fp->dbe); 7246 7247 rfs4_dbe_unlock(sp->dbe); 7248 if ((status = rfs4_share(sp)) != NFS4_OK) { 7249 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7250 rfs4_update_open_sequence(sp->owner); 7251 goto end; 7252 } 7253 7254 rfs4_dbe_lock(sp->dbe); 7255 7256 /* Update the stateid */ 7257 next_stateid(&sp->stateid); 7258 resp->open_stateid = sp->stateid.stateid; 7259 7260 rfs4_dbe_unlock(sp->dbe); 7261 7262 *cs->statusp = resp->status = NFS4_OK; 7263 /* Update the lease */ 7264 rfs4_update_lease(sp->owner->client); 7265 /* And the sequence */ 7266 rfs4_update_open_sequence(sp->owner); 7267 rfs4_update_open_resp(sp->owner, resop, NULL); 7268 7269 end: 7270 rfs4_sw_exit(&sp->owner->oo_sw); 7271 rfs4_state_rele(sp); 7272 } 7273 7274 /* 7275 * The logic behind this function is detailed in the NFSv4 RFC in the 7276 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7277 * that section for explicit guidance to server behavior for 7278 * SETCLIENTID. 7279 */ 7280 void 7281 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7282 struct svc_req *req, struct compound_state *cs) 7283 { 7284 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7285 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7286 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7287 bool_t create = TRUE; 7288 char *addr, *netid; 7289 int len; 7290 7291 retry: 7292 newcp = cp_confirmed = cp_unconfirmed = NULL; 7293 7294 /* 7295 * In search of an EXISTING client matching the incoming 7296 * request to establish a new client identifier at the server 7297 */ 7298 create = TRUE; 7299 cp = rfs4_findclient(&args->client, &create, NULL); 7300 7301 /* Should never happen */ 7302 ASSERT(cp != NULL); 7303 7304 if (cp == NULL) { 7305 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7306 return; 7307 } 7308 7309 /* 7310 * Easiest case. Client identifier is newly created and is 7311 * unconfirmed. Also note that for this case, no other 7312 * entries exist for the client identifier. Nothing else to 7313 * check. Just setup the response and respond. 7314 */ 7315 if (create) { 7316 *cs->statusp = res->status = NFS4_OK; 7317 res->SETCLIENTID4res_u.resok4.clientid = cp->clientid; 7318 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7319 cp->confirm_verf; 7320 /* Setup callback information; CB_NULL confirmation later */ 7321 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 7322 7323 rfs4_client_rele(cp); 7324 return; 7325 } 7326 7327 /* 7328 * An existing, confirmed client may exist but it may not have 7329 * been active for at least one lease period. If so, then 7330 * "close" the client and create a new client identifier 7331 */ 7332 if (rfs4_lease_expired(cp)) { 7333 rfs4_client_close(cp); 7334 goto retry; 7335 } 7336 7337 if (cp->need_confirm == TRUE) 7338 cp_unconfirmed = cp; 7339 else 7340 cp_confirmed = cp; 7341 7342 cp = NULL; 7343 7344 /* 7345 * We have a confirmed client, now check for an 7346 * unconfimred entry 7347 */ 7348 if (cp_confirmed) { 7349 /* If creds don't match then client identifier is inuse */ 7350 if (!creds_ok(cp_confirmed->cr_set, req, cs)) { 7351 rfs4_cbinfo_t *cbp; 7352 /* 7353 * Some one else has established this client 7354 * id. Try and say * who they are. We will use 7355 * the call back address supplied by * the 7356 * first client. 7357 */ 7358 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7359 7360 addr = netid = NULL; 7361 7362 cbp = &cp_confirmed->cbinfo; 7363 if (cbp->cb_callback.cb_location.r_addr && 7364 cbp->cb_callback.cb_location.r_netid) { 7365 cb_client4 *cbcp = &cbp->cb_callback; 7366 7367 len = strlen(cbcp->cb_location.r_addr)+1; 7368 addr = kmem_alloc(len, KM_SLEEP); 7369 bcopy(cbcp->cb_location.r_addr, addr, len); 7370 len = strlen(cbcp->cb_location.r_netid)+1; 7371 netid = kmem_alloc(len, KM_SLEEP); 7372 bcopy(cbcp->cb_location.r_netid, netid, len); 7373 } 7374 7375 res->SETCLIENTID4res_u.client_using.r_addr = addr; 7376 res->SETCLIENTID4res_u.client_using.r_netid = netid; 7377 7378 rfs4_client_rele(cp_confirmed); 7379 } 7380 7381 /* 7382 * Confirmed, creds match, and verifier matches; must 7383 * be an update of the callback info 7384 */ 7385 if (cp_confirmed->nfs_client.verifier == 7386 args->client.verifier) { 7387 /* Setup callback information */ 7388 rfs4_client_setcb(cp_confirmed, &args->callback, 7389 args->callback_ident); 7390 7391 /* everything okay -- move ahead */ 7392 *cs->statusp = res->status = NFS4_OK; 7393 res->SETCLIENTID4res_u.resok4.clientid = 7394 cp_confirmed->clientid; 7395 7396 /* update the confirm_verifier and return it */ 7397 rfs4_client_scv_next(cp_confirmed); 7398 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7399 cp_confirmed->confirm_verf; 7400 7401 rfs4_client_rele(cp_confirmed); 7402 return; 7403 } 7404 7405 /* 7406 * Creds match but the verifier doesn't. Must search 7407 * for an unconfirmed client that would be replaced by 7408 * this request. 7409 */ 7410 create = FALSE; 7411 cp_unconfirmed = rfs4_findclient(&args->client, &create, 7412 cp_confirmed); 7413 } 7414 7415 /* 7416 * At this point, we have taken care of the brand new client 7417 * struct, INUSE case, update of an existing, and confirmed 7418 * client struct. 7419 */ 7420 7421 /* 7422 * check to see if things have changed while we originally 7423 * picked up the client struct. If they have, then return and 7424 * retry the processing of this SETCLIENTID request. 7425 */ 7426 if (cp_unconfirmed) { 7427 rfs4_dbe_lock(cp_unconfirmed->dbe); 7428 if (!cp_unconfirmed->need_confirm) { 7429 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7430 rfs4_client_rele(cp_unconfirmed); 7431 if (cp_confirmed) 7432 rfs4_client_rele(cp_confirmed); 7433 goto retry; 7434 } 7435 /* do away with the old unconfirmed one */ 7436 rfs4_dbe_invalidate(cp_unconfirmed->dbe); 7437 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7438 rfs4_client_rele(cp_unconfirmed); 7439 cp_unconfirmed = NULL; 7440 } 7441 7442 /* 7443 * This search will temporarily hide the confirmed client 7444 * struct while a new client struct is created as the 7445 * unconfirmed one. 7446 */ 7447 create = TRUE; 7448 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 7449 7450 ASSERT(newcp != NULL); 7451 7452 if (newcp == NULL) { 7453 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7454 rfs4_client_rele(cp_confirmed); 7455 return; 7456 } 7457 7458 /* 7459 * If one was not created, then a similar request must be in 7460 * process so release and start over with this one 7461 */ 7462 if (create != TRUE) { 7463 rfs4_client_rele(newcp); 7464 if (cp_confirmed) 7465 rfs4_client_rele(cp_confirmed); 7466 goto retry; 7467 } 7468 7469 *cs->statusp = res->status = NFS4_OK; 7470 res->SETCLIENTID4res_u.resok4.clientid = newcp->clientid; 7471 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7472 newcp->confirm_verf; 7473 /* Setup callback information; CB_NULL confirmation later */ 7474 rfs4_client_setcb(newcp, &args->callback, 7475 args->callback_ident); 7476 7477 newcp->cp_confirmed = cp_confirmed; 7478 7479 rfs4_client_rele(newcp); 7480 } 7481 7482 /*ARGSUSED*/ 7483 void 7484 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7485 struct svc_req *req, struct compound_state *cs) 7486 { 7487 SETCLIENTID_CONFIRM4args *args = 7488 &argop->nfs_argop4_u.opsetclientid_confirm; 7489 SETCLIENTID_CONFIRM4res *res = 7490 &resop->nfs_resop4_u.opsetclientid_confirm; 7491 rfs4_client_t *cp, *cptoclose = NULL; 7492 7493 *cs->statusp = res->status = NFS4_OK; 7494 7495 cp = rfs4_findclient_by_id(args->clientid, TRUE); 7496 7497 if (cp == NULL) { 7498 *cs->statusp = res->status = 7499 rfs4_check_clientid(&args->clientid, 1); 7500 return; 7501 } 7502 7503 if (!creds_ok(cp, req, cs)) { 7504 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7505 rfs4_client_rele(cp); 7506 return; 7507 } 7508 7509 /* If the verifier doesn't match, the record doesn't match */ 7510 if (cp->confirm_verf != args->setclientid_confirm) { 7511 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 7512 rfs4_client_rele(cp); 7513 return; 7514 } 7515 7516 rfs4_dbe_lock(cp->dbe); 7517 cp->need_confirm = FALSE; 7518 if (cp->cp_confirmed) { 7519 cptoclose = cp->cp_confirmed; 7520 cptoclose->ss_remove = 1; 7521 cp->cp_confirmed = NULL; 7522 } 7523 7524 /* 7525 * Update the client's associated server instance, if it's changed 7526 * since the client was created. 7527 */ 7528 if (rfs4_servinst(cp) != rfs4_cur_servinst) 7529 rfs4_servinst_assign(cp, rfs4_cur_servinst); 7530 7531 /* 7532 * Record clientid in stable storage. 7533 * Must be done after server instance has been assigned. 7534 */ 7535 rfs4_ss_clid(cp, req); 7536 7537 rfs4_dbe_unlock(cp->dbe); 7538 7539 if (cptoclose) 7540 /* don't need to rele, client_close does it */ 7541 rfs4_client_close(cptoclose); 7542 7543 /* If needed, initiate CB_NULL call for callback path */ 7544 rfs4_deleg_cb_check(cp); 7545 rfs4_update_lease(cp); 7546 7547 /* 7548 * Check to see if client can perform reclaims 7549 */ 7550 rfs4_ss_chkclid(cp); 7551 7552 rfs4_client_rele(cp); 7553 } 7554 7555 7556 /*ARGSUSED*/ 7557 void 7558 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 7559 struct svc_req *req, struct compound_state *cs) 7560 { 7561 /* XXX Currently not using req arg */ 7562 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 7563 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 7564 rfs4_state_t *sp; 7565 nfsstat4 status; 7566 7567 if (cs->vp == NULL) { 7568 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7569 return; 7570 } 7571 7572 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 7573 if (status != NFS4_OK) { 7574 *cs->statusp = resp->status = status; 7575 return; 7576 } 7577 7578 /* Ensure specified filehandle matches */ 7579 if (cs->vp != sp->finfo->vp) { 7580 rfs4_state_rele(sp); 7581 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7582 return; 7583 } 7584 7585 /* hold off other access to open_owner while we tinker */ 7586 rfs4_sw_enter(&sp->owner->oo_sw); 7587 7588 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7589 case NFS4_CHECK_STATEID_OKAY: 7590 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7591 resop) != NFS4_CHKSEQ_OKAY) { 7592 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7593 goto end; 7594 } 7595 break; 7596 case NFS4_CHECK_STATEID_OLD: 7597 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7598 goto end; 7599 case NFS4_CHECK_STATEID_BAD: 7600 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7601 goto end; 7602 case NFS4_CHECK_STATEID_EXPIRED: 7603 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7604 goto end; 7605 case NFS4_CHECK_STATEID_CLOSED: 7606 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7607 goto end; 7608 case NFS4_CHECK_STATEID_UNCONFIRMED: 7609 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7610 goto end; 7611 case NFS4_CHECK_STATEID_REPLAY: 7612 /* Check the sequence id for the open owner */ 7613 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7614 case NFS4_CHKSEQ_OKAY: 7615 /* 7616 * This is replayed stateid; if seqid matches 7617 * next expected, then client is using wrong seqid. 7618 */ 7619 /* FALL THROUGH */ 7620 case NFS4_CHKSEQ_BAD: 7621 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7622 goto end; 7623 case NFS4_CHKSEQ_REPLAY: 7624 /* 7625 * Note this case is the duplicate case so 7626 * resp->status is already set. 7627 */ 7628 *cs->statusp = resp->status; 7629 rfs4_update_lease(sp->owner->client); 7630 goto end; 7631 } 7632 break; 7633 default: 7634 ASSERT(FALSE); 7635 break; 7636 } 7637 7638 rfs4_dbe_lock(sp->dbe); 7639 7640 /* Update the stateid. */ 7641 next_stateid(&sp->stateid); 7642 resp->open_stateid = sp->stateid.stateid; 7643 7644 rfs4_dbe_unlock(sp->dbe); 7645 7646 rfs4_update_lease(sp->owner->client); 7647 rfs4_update_open_sequence(sp->owner); 7648 rfs4_update_open_resp(sp->owner, resop, NULL); 7649 7650 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7651 7652 *cs->statusp = resp->status = status; 7653 7654 end: 7655 rfs4_sw_exit(&sp->owner->oo_sw); 7656 rfs4_state_rele(sp); 7657 } 7658 7659 /* 7660 * Manage the counts on the file struct and close all file locks 7661 */ 7662 /*ARGSUSED*/ 7663 void 7664 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 7665 bool_t close_of_client) 7666 { 7667 rfs4_file_t *fp = sp->finfo; 7668 rfs4_lo_state_t *lsp; 7669 struct shrlock shr; 7670 struct shr_locowner shr_loco; 7671 int fflags, s_access, s_deny; 7672 7673 fflags = s_access = s_deny = 0; 7674 /* 7675 * Decrement the count for each access and deny bit that this 7676 * state has contributed to the file. If the file counts go to zero 7677 * clear the appropriate bit in the appropriate mask. 7678 */ 7679 7680 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 7681 fp->access_read--; 7682 fflags |= FREAD; 7683 s_access |= F_RDACC; 7684 if (fp->access_read == 0) 7685 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7686 } 7687 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 7688 fp->access_write--; 7689 fflags |= FWRITE; 7690 s_access |= F_WRACC; 7691 if (fp->access_write == 0) 7692 fp->share_access &= ~OPEN4_SHARE_ACCESS_WRITE; 7693 } 7694 if (sp->share_deny & OPEN4_SHARE_DENY_READ) { 7695 fp->deny_read--; 7696 s_deny |= F_RDDNY; 7697 if (fp->deny_read == 0) 7698 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 7699 } 7700 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) { 7701 fp->deny_write--; 7702 s_deny |= F_WRDNY; 7703 if (fp->deny_write == 0) 7704 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7705 } 7706 7707 /* 7708 * If this call is part of the larger closing down of client 7709 * state then it is just easier to release all locks 7710 * associated with this client instead of going through each 7711 * individual file and cleaning locks there. 7712 */ 7713 if (close_of_client) { 7714 if (sp->owner->client->unlksys_completed == FALSE && 7715 sp->lockownerlist.next->lsp != NULL && 7716 sp->owner->client->sysidt != LM_NOSYSID) { 7717 /* Is the PxFS kernel module loaded? */ 7718 if (lm_remove_file_locks != NULL) { 7719 int new_sysid; 7720 7721 /* Encode the cluster nodeid in new sysid */ 7722 new_sysid = sp->owner->client->sysidt; 7723 lm_set_nlmid_flk(&new_sysid); 7724 7725 /* 7726 * This PxFS routine removes file locks for a 7727 * client over all nodes of a cluster. 7728 */ 7729 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7730 "lm_remove_file_locks(sysid=0x%x)\n", 7731 new_sysid)); 7732 (*lm_remove_file_locks)(new_sysid); 7733 } else { 7734 struct flock64 flk; 7735 7736 /* Release all locks for this client */ 7737 flk.l_type = F_UNLKSYS; 7738 flk.l_whence = 0; 7739 flk.l_start = 0; 7740 flk.l_len = 0; 7741 flk.l_sysid = sp->owner->client->sysidt; 7742 flk.l_pid = 0; 7743 (void) VOP_FRLOCK(sp->finfo->vp, F_SETLK, &flk, 7744 F_REMOTELOCK | FREAD | FWRITE, 7745 (u_offset_t)0, NULL, CRED()); 7746 } 7747 7748 sp->owner->client->unlksys_completed = TRUE; 7749 } 7750 } 7751 7752 /* 7753 * Release all locks on this file by this lock owner or at 7754 * least mark the locks as having been released 7755 */ 7756 for (lsp = sp->lockownerlist.next->lsp; lsp != NULL; 7757 lsp = lsp->lockownerlist.next->lsp) { 7758 7759 lsp->locks_cleaned = TRUE; 7760 7761 /* Was this already taken care of above? */ 7762 if (!close_of_client && 7763 sp->owner->client->sysidt != LM_NOSYSID) 7764 (void) cleanlocks(sp->finfo->vp, lsp->locker->pid, 7765 lsp->locker->client->sysidt); 7766 } 7767 7768 /* 7769 * Release any shrlocks associated with this open state ID. 7770 * This must be done before the rfs4_state gets marked closed. 7771 */ 7772 if (sp->owner->client->sysidt != LM_NOSYSID) { 7773 shr.s_access = s_access; 7774 shr.s_deny = s_deny; 7775 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 7776 shr.s_sysid = sp->owner->client->sysidt; 7777 shr_loco.sl_pid = shr.s_pid; 7778 shr_loco.sl_id = shr.s_sysid; 7779 shr.s_owner = (caddr_t)&shr_loco; 7780 shr.s_own_len = sizeof (shr_loco); 7781 (void) vop_shrlock(sp->finfo->vp, F_UNSHARE, &shr, fflags); 7782 } 7783 } 7784 7785 /* 7786 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 7787 */ 7788 static nfsstat4 7789 lock_denied(LOCK4denied *dp, struct flock64 *flk) 7790 { 7791 rfs4_lockowner_t *lo; 7792 rfs4_client_t *cp; 7793 uint32_t len; 7794 7795 lo = rfs4_findlockowner_by_pid(flk->l_pid); 7796 if (lo != NULL) { 7797 cp = lo->client; 7798 if (rfs4_lease_expired(cp)) { 7799 rfs4_lockowner_rele(lo); 7800 rfs4_dbe_hold(cp->dbe); 7801 rfs4_client_close(cp); 7802 return (NFS4ERR_EXPIRED); 7803 } 7804 dp->owner.clientid = lo->owner.clientid; 7805 len = lo->owner.owner_len; 7806 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 7807 bcopy(lo->owner.owner_val, dp->owner.owner_val, len); 7808 dp->owner.owner_len = len; 7809 rfs4_lockowner_rele(lo); 7810 goto finish; 7811 } 7812 7813 /* 7814 * Its not a NFS4 lock. We take advantage that the upper 32 bits 7815 * of the client id contain the boot time for a NFS4 lock. So we 7816 * fabricate and identity by setting clientid to the sysid, and 7817 * the lock owner to the pid. 7818 */ 7819 dp->owner.clientid = flk->l_sysid; 7820 len = sizeof (pid_t); 7821 dp->owner.owner_len = len; 7822 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 7823 bcopy(&flk->l_pid, dp->owner.owner_val, len); 7824 finish: 7825 dp->offset = flk->l_start; 7826 dp->length = flk->l_len; 7827 7828 if (flk->l_type == F_RDLCK) 7829 dp->locktype = READ_LT; 7830 else if (flk->l_type == F_WRLCK) 7831 dp->locktype = WRITE_LT; 7832 else 7833 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 7834 7835 return (NFS4_OK); 7836 } 7837 7838 static int 7839 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 7840 { 7841 int error; 7842 struct flock64 flk; 7843 int i; 7844 clock_t delaytime; 7845 7846 retry: 7847 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 7848 7849 for (i = 0; i < rfs4_maxlock_tries; i++) { 7850 LOCK_PRINT(rfs4_debug, "setlock", F_SETLK, flock); 7851 error = VOP_FRLOCK(vp, F_SETLK, 7852 flock, flag, (u_offset_t)0, NULL, cred); 7853 7854 if (error != EAGAIN && error != EACCES) 7855 break; 7856 7857 if (i < rfs4_maxlock_tries - 1) { 7858 delay(delaytime); 7859 delaytime *= 2; 7860 } 7861 } 7862 7863 if (error == EAGAIN || error == EACCES) { 7864 /* Get the owner of the lock */ 7865 flk = *flock; 7866 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 7867 if (VOP_FRLOCK(vp, F_GETLK, 7868 &flk, flag, (u_offset_t)0, NULL, cred) == 0) { 7869 if (flk.l_type == F_UNLCK) { 7870 /* No longer locked, retry */ 7871 goto retry; 7872 } 7873 *flock = flk; 7874 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 7875 F_GETLK, &flk); 7876 } 7877 } 7878 7879 return (error); 7880 } 7881 7882 /*ARGSUSED*/ 7883 static nfsstat4 7884 rfs4_do_lock(rfs4_lo_state_t *lp, nfs_lock_type4 locktype, 7885 seqid4 seqid, offset4 offset, 7886 length4 length, cred_t *cred, nfs_resop4 *resop) 7887 { 7888 nfsstat4 status; 7889 rfs4_lockowner_t *lo = lp->locker; 7890 rfs4_state_t *sp = lp->state; 7891 struct flock64 flock; 7892 int16_t ltype; 7893 int flag; 7894 int error; 7895 sysid_t sysid; 7896 LOCK4res *lres; 7897 7898 if (rfs4_lease_expired(lo->client)) { 7899 return (NFS4ERR_EXPIRED); 7900 } 7901 7902 if ((status = rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 7903 return (status); 7904 7905 /* Check for zero length. To lock to end of file use all ones for V4 */ 7906 if (length == 0) 7907 return (NFS4ERR_INVAL); 7908 else if (length == (length4)(~0)) 7909 length = 0; /* Posix to end of file */ 7910 7911 retry: 7912 rfs4_dbe_lock(sp->dbe); 7913 7914 7915 if (resop->resop != OP_LOCKU) { 7916 switch (locktype) { 7917 case READ_LT: 7918 case READW_LT: 7919 if ((sp->share_access 7920 & OPEN4_SHARE_ACCESS_READ) == 0) { 7921 rfs4_dbe_unlock(sp->dbe); 7922 7923 return (NFS4ERR_OPENMODE); 7924 } 7925 ltype = F_RDLCK; 7926 break; 7927 case WRITE_LT: 7928 case WRITEW_LT: 7929 if ((sp->share_access 7930 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7931 rfs4_dbe_unlock(sp->dbe); 7932 7933 return (NFS4ERR_OPENMODE); 7934 } 7935 ltype = F_WRLCK; 7936 break; 7937 } 7938 } else 7939 ltype = F_UNLCK; 7940 7941 flock.l_type = ltype; 7942 flock.l_whence = 0; /* SEEK_SET */ 7943 flock.l_start = offset; 7944 flock.l_len = length; 7945 flock.l_sysid = sysid; 7946 flock.l_pid = lp->locker->pid; 7947 7948 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 7949 if (flock.l_len < 0 || flock.l_start < 0) { 7950 rfs4_dbe_unlock(sp->dbe); 7951 return (NFS4ERR_INVAL); 7952 } 7953 7954 /* 7955 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 7956 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 7957 */ 7958 flag = (int)sp->share_access | F_REMOTELOCK; 7959 7960 error = setlock(sp->finfo->vp, &flock, flag, cred); 7961 if (error == 0) { 7962 rfs4_dbe_lock(lp->dbe); 7963 next_stateid(&lp->lockid); 7964 rfs4_dbe_unlock(lp->dbe); 7965 } 7966 7967 rfs4_dbe_unlock(sp->dbe); 7968 7969 /* 7970 * N.B. We map error values to nfsv4 errors. This is differrent 7971 * than puterrno4 routine. 7972 */ 7973 switch (error) { 7974 case 0: 7975 status = NFS4_OK; 7976 break; 7977 case EAGAIN: 7978 case EACCES: /* Old value */ 7979 /* Can only get here if op is OP_LOCK */ 7980 ASSERT(resop->resop == OP_LOCK); 7981 lres = &resop->nfs_resop4_u.oplock; 7982 status = NFS4ERR_DENIED; 7983 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 7984 == NFS4ERR_EXPIRED) 7985 goto retry; 7986 break; 7987 case ENOLCK: 7988 status = NFS4ERR_DELAY; 7989 break; 7990 case EOVERFLOW: 7991 status = NFS4ERR_INVAL; 7992 break; 7993 case EINVAL: 7994 status = NFS4ERR_NOTSUPP; 7995 break; 7996 default: 7997 cmn_err(CE_WARN, "rfs4_do_lock: unexpected errno (%d)", 7998 error); 7999 status = NFS4ERR_SERVERFAULT; 8000 break; 8001 } 8002 8003 return (status); 8004 } 8005 8006 /*ARGSUSED*/ 8007 void 8008 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8009 struct svc_req *req, struct compound_state *cs) 8010 { 8011 /* XXX Currently not using req arg */ 8012 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8013 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8014 nfsstat4 status; 8015 stateid4 *stateid; 8016 rfs4_lockowner_t *lo; 8017 rfs4_client_t *cp; 8018 rfs4_state_t *sp = NULL; 8019 rfs4_lo_state_t *lsp = NULL; 8020 bool_t ls_sw_held = FALSE; 8021 bool_t create = TRUE; 8022 bool_t lcreate = TRUE; 8023 bool_t dup_lock = FALSE; 8024 int rc; 8025 8026 if (cs->vp == NULL) { 8027 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8028 return; 8029 } 8030 8031 if (args->locker.new_lock_owner) { 8032 /* Create a new lockowner for this instance */ 8033 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8034 8035 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8036 8037 stateid = &olo->open_stateid; 8038 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8039 if (status != NFS4_OK) { 8040 NFS4_DEBUG(rfs4_debug, 8041 (CE_NOTE, "Get state failed in lock %d", 8042 status)); 8043 *cs->statusp = resp->status = status; 8044 return; 8045 } 8046 8047 /* Ensure specified filehandle matches */ 8048 if (cs->vp != sp->finfo->vp) { 8049 rfs4_state_rele(sp); 8050 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8051 return; 8052 } 8053 8054 /* hold off other access to open_owner while we tinker */ 8055 rfs4_sw_enter(&sp->owner->oo_sw); 8056 8057 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8058 case NFS4_CHECK_STATEID_OLD: 8059 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8060 goto end; 8061 case NFS4_CHECK_STATEID_BAD: 8062 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8063 goto end; 8064 case NFS4_CHECK_STATEID_EXPIRED: 8065 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8066 goto end; 8067 case NFS4_CHECK_STATEID_UNCONFIRMED: 8068 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8069 goto end; 8070 case NFS4_CHECK_STATEID_CLOSED: 8071 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8072 goto end; 8073 case NFS4_CHECK_STATEID_OKAY: 8074 case NFS4_CHECK_STATEID_REPLAY: 8075 switch (rfs4_check_olo_seqid(olo->open_seqid, 8076 sp->owner, resop)) { 8077 case NFS4_CHKSEQ_OKAY: 8078 if (rc == NFS4_CHECK_STATEID_OKAY) 8079 break; 8080 /* 8081 * This is replayed stateid; if seqid 8082 * matches next expected, then client 8083 * is using wrong seqid. 8084 */ 8085 /* FALLTHROUGH */ 8086 case NFS4_CHKSEQ_BAD: 8087 *cs->statusp = resp->status = 8088 NFS4ERR_BAD_SEQID; 8089 goto end; 8090 case NFS4_CHKSEQ_REPLAY: 8091 /* This is a duplicate LOCK request */ 8092 dup_lock = TRUE; 8093 8094 /* 8095 * For a duplicate we do not want to 8096 * create a new lockowner as it should 8097 * already exist. 8098 * Turn off the lockowner create flag. 8099 */ 8100 lcreate = FALSE; 8101 } 8102 break; 8103 } 8104 8105 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8106 if (lo == NULL) { 8107 NFS4_DEBUG(rfs4_debug, 8108 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8109 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8110 goto end; 8111 } 8112 8113 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8114 if (lsp == NULL) { 8115 rfs4_update_lease(sp->owner->client); 8116 /* 8117 * Only update theh open_seqid if this is not 8118 * a duplicate request 8119 */ 8120 if (dup_lock == FALSE) { 8121 rfs4_update_open_sequence(sp->owner); 8122 } 8123 8124 NFS4_DEBUG(rfs4_debug, 8125 (CE_NOTE, "rfs4_op_lock: no state")); 8126 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8127 rfs4_update_open_resp(sp->owner, resop, NULL); 8128 rfs4_lockowner_rele(lo); 8129 goto end; 8130 } 8131 8132 /* 8133 * This is the new_lock_owner branch and the client is 8134 * supposed to be associating a new lock_owner with 8135 * the open file at this point. If we find that a 8136 * lock_owner/state association already exists and a 8137 * successful LOCK request was returned to the client, 8138 * an error is returned to the client since this is 8139 * not appropriate. The client should be using the 8140 * existing lock_owner branch. 8141 */ 8142 if (dup_lock == FALSE && create == FALSE) { 8143 if (lsp->lock_completed == TRUE) { 8144 *cs->statusp = 8145 resp->status = NFS4ERR_BAD_SEQID; 8146 rfs4_lockowner_rele(lo); 8147 goto end; 8148 } 8149 } 8150 8151 rfs4_update_lease(sp->owner->client); 8152 8153 /* 8154 * Only update theh open_seqid if this is not 8155 * a duplicate request 8156 */ 8157 if (dup_lock == FALSE) { 8158 rfs4_update_open_sequence(sp->owner); 8159 } 8160 8161 /* 8162 * If this is a duplicate lock request, just copy the 8163 * previously saved reply and return. 8164 */ 8165 if (dup_lock == TRUE) { 8166 /* verify that lock_seqid's match */ 8167 if (lsp->seqid != olo->lock_seqid) { 8168 NFS4_DEBUG(rfs4_debug, 8169 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8170 "lsp->seqid=%d old->seqid=%d", 8171 lsp->seqid, olo->lock_seqid)); 8172 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8173 } else { 8174 rfs4_copy_reply(resop, lsp->reply); 8175 /* 8176 * Make sure to copy the just 8177 * retrieved reply status into the 8178 * overall compound status 8179 */ 8180 *cs->statusp = resp->status; 8181 } 8182 rfs4_lockowner_rele(lo); 8183 goto end; 8184 } 8185 8186 rfs4_dbe_lock(lsp->dbe); 8187 8188 /* Make sure to update the lock sequence id */ 8189 lsp->seqid = olo->lock_seqid; 8190 8191 NFS4_DEBUG(rfs4_debug, 8192 (CE_NOTE, "Lock seqid established as %d", lsp->seqid)); 8193 8194 /* 8195 * This is used to signify the newly created lockowner 8196 * stateid and its sequence number. The checks for 8197 * sequence number and increment don't occur on the 8198 * very first lock request for a lockowner. 8199 */ 8200 lsp->skip_seqid_check = TRUE; 8201 8202 /* hold off other access to lsp while we tinker */ 8203 rfs4_sw_enter(&lsp->ls_sw); 8204 ls_sw_held = TRUE; 8205 8206 rfs4_dbe_unlock(lsp->dbe); 8207 8208 rfs4_lockowner_rele(lo); 8209 } else { 8210 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8211 /* get lsp and hold the lock on the underlying file struct */ 8212 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8213 != NFS4_OK) { 8214 *cs->statusp = resp->status = status; 8215 return; 8216 } 8217 create = FALSE; /* We didn't create lsp */ 8218 8219 /* Ensure specified filehandle matches */ 8220 if (cs->vp != lsp->state->finfo->vp) { 8221 rfs4_lo_state_rele(lsp, TRUE); 8222 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8223 return; 8224 } 8225 8226 /* hold off other access to lsp while we tinker */ 8227 rfs4_sw_enter(&lsp->ls_sw); 8228 ls_sw_held = TRUE; 8229 8230 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8231 /* 8232 * The stateid looks like it was okay (expected to be 8233 * the next one) 8234 */ 8235 case NFS4_CHECK_STATEID_OKAY: 8236 /* 8237 * The sequence id is now checked. Determine 8238 * if this is a replay or if it is in the 8239 * expected (next) sequence. In the case of a 8240 * replay, there are two replay conditions 8241 * that may occur. The first is the normal 8242 * condition where a LOCK is done with a 8243 * NFS4_OK response and the stateid is 8244 * updated. That case is handled below when 8245 * the stateid is identified as a REPLAY. The 8246 * second is the case where an error is 8247 * returned, like NFS4ERR_DENIED, and the 8248 * sequence number is updated but the stateid 8249 * is not updated. This second case is dealt 8250 * with here. So it may seem odd that the 8251 * stateid is okay but the sequence id is a 8252 * replay but it is okay. 8253 */ 8254 switch (rfs4_check_lock_seqid( 8255 args->locker.locker4_u.lock_owner.lock_seqid, 8256 lsp, resop)) { 8257 case NFS4_CHKSEQ_REPLAY: 8258 if (resp->status != NFS4_OK) { 8259 /* 8260 * Here is our replay and need 8261 * to verify that the last 8262 * response was an error. 8263 */ 8264 *cs->statusp = resp->status; 8265 goto end; 8266 } 8267 /* 8268 * This is done since the sequence id 8269 * looked like a replay but it didn't 8270 * pass our check so a BAD_SEQID is 8271 * returned as a result. 8272 */ 8273 /*FALLTHROUGH*/ 8274 case NFS4_CHKSEQ_BAD: 8275 *cs->statusp = resp->status = 8276 NFS4ERR_BAD_SEQID; 8277 goto end; 8278 case NFS4_CHKSEQ_OKAY: 8279 /* Everything looks okay move ahead */ 8280 break; 8281 } 8282 break; 8283 case NFS4_CHECK_STATEID_OLD: 8284 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8285 goto end; 8286 case NFS4_CHECK_STATEID_BAD: 8287 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8288 goto end; 8289 case NFS4_CHECK_STATEID_EXPIRED: 8290 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8291 goto end; 8292 case NFS4_CHECK_STATEID_CLOSED: 8293 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8294 goto end; 8295 case NFS4_CHECK_STATEID_REPLAY: 8296 switch (rfs4_check_lock_seqid( 8297 args->locker.locker4_u.lock_owner.lock_seqid, 8298 lsp, resop)) { 8299 case NFS4_CHKSEQ_OKAY: 8300 /* 8301 * This is a replayed stateid; if 8302 * seqid matches the next expected, 8303 * then client is using wrong seqid. 8304 */ 8305 case NFS4_CHKSEQ_BAD: 8306 *cs->statusp = resp->status = 8307 NFS4ERR_BAD_SEQID; 8308 goto end; 8309 case NFS4_CHKSEQ_REPLAY: 8310 rfs4_update_lease(lsp->locker->client); 8311 *cs->statusp = status = resp->status; 8312 goto end; 8313 } 8314 break; 8315 default: 8316 ASSERT(FALSE); 8317 break; 8318 } 8319 8320 rfs4_update_lock_sequence(lsp); 8321 rfs4_update_lease(lsp->locker->client); 8322 } 8323 8324 /* 8325 * NFS4 only allows locking on regular files, so 8326 * verify type of object. 8327 */ 8328 if (cs->vp->v_type != VREG) { 8329 if (cs->vp->v_type == VDIR) 8330 status = NFS4ERR_ISDIR; 8331 else 8332 status = NFS4ERR_INVAL; 8333 goto out; 8334 } 8335 8336 cp = lsp->state->owner->client; 8337 8338 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 8339 status = NFS4ERR_GRACE; 8340 goto out; 8341 } 8342 8343 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->can_reclaim) { 8344 status = NFS4ERR_NO_GRACE; 8345 goto out; 8346 } 8347 8348 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 8349 status = NFS4ERR_NO_GRACE; 8350 goto out; 8351 } 8352 8353 if (lsp->state->finfo->dinfo->dtype == OPEN_DELEGATE_WRITE) 8354 cs->deleg = TRUE; 8355 8356 status = rfs4_do_lock(lsp, args->locktype, 8357 args->locker.locker4_u.lock_owner.lock_seqid, 8358 args->offset, 8359 args->length, cs->cr, resop); 8360 8361 out: 8362 lsp->skip_seqid_check = FALSE; 8363 8364 *cs->statusp = resp->status = status; 8365 8366 if (status == NFS4_OK) { 8367 resp->LOCK4res_u.lock_stateid = lsp->lockid.stateid; 8368 lsp->lock_completed = TRUE; 8369 } 8370 /* 8371 * Only update the "OPEN" response here if this was a new 8372 * lock_owner 8373 */ 8374 if (sp) 8375 rfs4_update_open_resp(sp->owner, resop, NULL); 8376 8377 rfs4_update_lock_resp(lsp, resop); 8378 8379 end: 8380 if (lsp) { 8381 if (ls_sw_held) 8382 rfs4_sw_exit(&lsp->ls_sw); 8383 /* 8384 * If an sp obtained, then the lsp does not represent 8385 * a lock on the file struct. 8386 */ 8387 if (sp != NULL) 8388 rfs4_lo_state_rele(lsp, FALSE); 8389 else 8390 rfs4_lo_state_rele(lsp, TRUE); 8391 } 8392 if (sp) { 8393 rfs4_sw_exit(&sp->owner->oo_sw); 8394 rfs4_state_rele(sp); 8395 } 8396 } 8397 8398 /* free function for LOCK/LOCKT */ 8399 static void 8400 lock_denied_free(nfs_resop4 *resop) 8401 { 8402 LOCK4denied *dp = NULL; 8403 8404 switch (resop->resop) { 8405 case OP_LOCK: 8406 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 8407 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 8408 break; 8409 case OP_LOCKT: 8410 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 8411 dp = &resop->nfs_resop4_u.oplockt.denied; 8412 break; 8413 default: 8414 break; 8415 } 8416 8417 if (dp) 8418 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 8419 } 8420 8421 /*ARGSUSED*/ 8422 void 8423 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 8424 struct svc_req *req, struct compound_state *cs) 8425 { 8426 /* XXX Currently not using req arg */ 8427 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 8428 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 8429 nfsstat4 status; 8430 stateid4 *stateid = &args->lock_stateid; 8431 rfs4_lo_state_t *lsp; 8432 8433 if (cs->vp == NULL) { 8434 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8435 return; 8436 } 8437 8438 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 8439 *cs->statusp = resp->status = status; 8440 return; 8441 } 8442 8443 /* Ensure specified filehandle matches */ 8444 if (cs->vp != lsp->state->finfo->vp) { 8445 rfs4_lo_state_rele(lsp, TRUE); 8446 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8447 return; 8448 } 8449 8450 /* hold off other access to lsp while we tinker */ 8451 rfs4_sw_enter(&lsp->ls_sw); 8452 8453 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8454 case NFS4_CHECK_STATEID_OKAY: 8455 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 8456 != NFS4_CHKSEQ_OKAY) { 8457 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8458 goto end; 8459 } 8460 break; 8461 case NFS4_CHECK_STATEID_OLD: 8462 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8463 goto end; 8464 case NFS4_CHECK_STATEID_BAD: 8465 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8466 goto end; 8467 case NFS4_CHECK_STATEID_EXPIRED: 8468 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8469 goto end; 8470 case NFS4_CHECK_STATEID_CLOSED: 8471 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8472 goto end; 8473 case NFS4_CHECK_STATEID_REPLAY: 8474 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 8475 case NFS4_CHKSEQ_OKAY: 8476 /* 8477 * This is a replayed stateid; if 8478 * seqid matches the next expected, 8479 * then client is using wrong seqid. 8480 */ 8481 case NFS4_CHKSEQ_BAD: 8482 *cs->statusp = resp->status = 8483 NFS4ERR_BAD_SEQID; 8484 goto end; 8485 case NFS4_CHKSEQ_REPLAY: 8486 rfs4_update_lease(lsp->locker->client); 8487 *cs->statusp = status = resp->status; 8488 goto end; 8489 } 8490 break; 8491 default: 8492 ASSERT(FALSE); 8493 break; 8494 } 8495 8496 rfs4_update_lock_sequence(lsp); 8497 rfs4_update_lease(lsp->locker->client); 8498 8499 /* 8500 * NFS4 only allows locking on regular files, so 8501 * verify type of object. 8502 */ 8503 if (cs->vp->v_type != VREG) { 8504 if (cs->vp->v_type == VDIR) 8505 status = NFS4ERR_ISDIR; 8506 else 8507 status = NFS4ERR_INVAL; 8508 goto out; 8509 } 8510 8511 if (rfs4_clnt_in_grace(lsp->state->owner->client)) { 8512 status = NFS4ERR_GRACE; 8513 goto out; 8514 } 8515 8516 status = rfs4_do_lock(lsp, args->locktype, 8517 args->seqid, args->offset, 8518 args->length, cs->cr, resop); 8519 8520 out: 8521 *cs->statusp = resp->status = status; 8522 8523 if (status == NFS4_OK) 8524 resp->lock_stateid = lsp->lockid.stateid; 8525 8526 rfs4_update_lock_resp(lsp, resop); 8527 8528 end: 8529 rfs4_sw_exit(&lsp->ls_sw); 8530 rfs4_lo_state_rele(lsp, TRUE); 8531 } 8532 8533 /* 8534 * LOCKT is a best effort routine, the client can not be guaranteed that 8535 * the status return is still in effect by the time the reply is received. 8536 * They are numerous race conditions in this routine, but we are not required 8537 * and can not be accurate. 8538 */ 8539 /*ARGSUSED*/ 8540 void 8541 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 8542 struct svc_req *req, struct compound_state *cs) 8543 { 8544 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 8545 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 8546 rfs4_lockowner_t *lo; 8547 rfs4_client_t *cp; 8548 bool_t create = FALSE; 8549 struct flock64 flk; 8550 int error; 8551 int flag = FREAD | FWRITE; 8552 int ltype; 8553 length4 posix_length; 8554 sysid_t sysid; 8555 pid_t pid; 8556 8557 if (cs->vp == NULL) { 8558 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8559 return; 8560 } 8561 8562 /* 8563 * NFS4 only allows locking on regular files, so 8564 * verify type of object. 8565 */ 8566 if (cs->vp->v_type != VREG) { 8567 if (cs->vp->v_type == VDIR) 8568 *cs->statusp = resp->status = NFS4ERR_ISDIR; 8569 else 8570 *cs->statusp = resp->status = NFS4ERR_INVAL; 8571 return; 8572 } 8573 8574 /* 8575 * Check out the clientid to ensure the server knows about it 8576 * so that we correctly inform the client of a server reboot. 8577 */ 8578 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 8579 == NULL) { 8580 *cs->statusp = resp->status = 8581 rfs4_check_clientid(&args->owner.clientid, 0); 8582 return; 8583 } 8584 if (rfs4_lease_expired(cp)) { 8585 rfs4_client_close(cp); 8586 /* 8587 * Protocol doesn't allow returning NFS4ERR_STALE as 8588 * other operations do on this check so STALE_CLIENTID 8589 * is returned instead 8590 */ 8591 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 8592 return; 8593 } 8594 8595 if (rfs4_clnt_in_grace(cp)) { 8596 *cs->statusp = resp->status = NFS4ERR_GRACE; 8597 return; 8598 } 8599 rfs4_client_rele(cp); 8600 8601 resp->status = NFS4_OK; 8602 8603 switch (args->locktype) { 8604 case READ_LT: 8605 case READW_LT: 8606 ltype = F_RDLCK; 8607 break; 8608 case WRITE_LT: 8609 case WRITEW_LT: 8610 ltype = F_WRLCK; 8611 break; 8612 } 8613 8614 posix_length = args->length; 8615 /* Check for zero length. To lock to end of file use all ones for V4 */ 8616 if (posix_length == 0) { 8617 *cs->statusp = resp->status = NFS4ERR_INVAL; 8618 return; 8619 } else if (posix_length == (length4)(~0)) { 8620 posix_length = 0; /* Posix to end of file */ 8621 } 8622 8623 /* Find or create a lockowner */ 8624 lo = rfs4_findlockowner(&args->owner, &create); 8625 8626 if (lo) { 8627 pid = lo->pid; 8628 if ((resp->status = 8629 rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 8630 goto out; 8631 } else { 8632 pid = 0; 8633 sysid = lockt_sysid; 8634 } 8635 retry: 8636 flk.l_type = ltype; 8637 flk.l_whence = 0; /* SEEK_SET */ 8638 flk.l_start = args->offset; 8639 flk.l_len = posix_length; 8640 flk.l_sysid = sysid; 8641 flk.l_pid = pid; 8642 flag |= F_REMOTELOCK; 8643 8644 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 8645 8646 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8647 if (flk.l_len < 0 || flk.l_start < 0) { 8648 resp->status = NFS4ERR_INVAL; 8649 goto out; 8650 } 8651 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 8652 NULL, cs->cr); 8653 8654 /* 8655 * N.B. We map error values to nfsv4 errors. This is differrent 8656 * than puterrno4 routine. 8657 */ 8658 switch (error) { 8659 case 0: 8660 if (flk.l_type == F_UNLCK) 8661 resp->status = NFS4_OK; 8662 else { 8663 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 8664 goto retry; 8665 resp->status = NFS4ERR_DENIED; 8666 } 8667 break; 8668 case EOVERFLOW: 8669 resp->status = NFS4ERR_INVAL; 8670 break; 8671 case EINVAL: 8672 resp->status = NFS4ERR_NOTSUPP; 8673 break; 8674 default: 8675 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 8676 error); 8677 resp->status = NFS4ERR_SERVERFAULT; 8678 break; 8679 } 8680 8681 out: 8682 if (lo) 8683 rfs4_lockowner_rele(lo); 8684 *cs->statusp = resp->status; 8685 } 8686 8687 static int 8688 vop_shrlock(vnode_t *vp, int cmd, struct shrlock *sp, int fflags) 8689 { 8690 int err; 8691 8692 if (cmd == F_UNSHARE && sp->s_deny == 0 && sp->s_access == 0) 8693 return (0); 8694 8695 err = VOP_SHRLOCK(vp, cmd, sp, fflags, CRED()); 8696 8697 NFS4_DEBUG(rfs4_shrlock_debug, 8698 (CE_NOTE, "rfs4_shrlock %s vp=%p acc=%d dny=%d sysid=%d " 8699 "pid=%d err=%d\n", cmd == F_SHARE ? "SHARE" : "UNSHR", 8700 (void *) vp, sp->s_access, sp->s_deny, sp->s_sysid, sp->s_pid, 8701 err)); 8702 8703 return (err); 8704 } 8705 8706 static int 8707 rfs4_shrlock(rfs4_state_t *sp, int cmd) 8708 { 8709 struct shrlock shr; 8710 struct shr_locowner shr_loco; 8711 int fflags; 8712 8713 fflags = shr.s_access = shr.s_deny = 0; 8714 8715 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 8716 fflags |= FREAD; 8717 shr.s_access |= F_RDACC; 8718 } 8719 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 8720 fflags |= FWRITE; 8721 shr.s_access |= F_WRACC; 8722 } 8723 if (sp->share_deny & OPEN4_SHARE_DENY_READ) 8724 shr.s_deny |= F_RDDNY; 8725 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) 8726 shr.s_deny |= F_WRDNY; 8727 8728 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 8729 shr.s_sysid = sp->owner->client->sysidt; 8730 shr_loco.sl_pid = shr.s_pid; 8731 shr_loco.sl_id = shr.s_sysid; 8732 shr.s_owner = (caddr_t)&shr_loco; 8733 shr.s_own_len = sizeof (shr_loco); 8734 return (vop_shrlock(sp->finfo->vp, cmd, &shr, fflags)); 8735 } 8736 8737 static int 8738 rfs4_share(rfs4_state_t *sp) 8739 { 8740 return (rfs4_shrlock(sp, F_SHARE)); 8741 } 8742 8743 void 8744 rfs4_unshare(rfs4_state_t *sp) 8745 { 8746 (void) rfs4_shrlock(sp, F_UNSHARE); 8747 } 8748