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 2009 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 #include <sys/param.h> 32 #include <sys/types.h> 33 #include <sys/systm.h> 34 #include <sys/cred.h> 35 #include <sys/buf.h> 36 #include <sys/vfs.h> 37 #include <sys/vfs_opreg.h> 38 #include <sys/vnode.h> 39 #include <sys/uio.h> 40 #include <sys/errno.h> 41 #include <sys/sysmacros.h> 42 #include <sys/statvfs.h> 43 #include <sys/kmem.h> 44 #include <sys/dirent.h> 45 #include <sys/cmn_err.h> 46 #include <sys/debug.h> 47 #include <sys/systeminfo.h> 48 #include <sys/flock.h> 49 #include <sys/pathname.h> 50 #include <sys/nbmlock.h> 51 #include <sys/share.h> 52 #include <sys/atomic.h> 53 #include <sys/policy.h> 54 #include <sys/fem.h> 55 #include <sys/sdt.h> 56 #include <sys/ddi.h> 57 #include <sys/zone.h> 58 59 #include <rpc/types.h> 60 #include <rpc/auth.h> 61 #include <rpc/rpcsec_gss.h> 62 #include <rpc/svc.h> 63 64 #include <nfs/nfs.h> 65 #include <nfs/export.h> 66 #include <nfs/nfs_cmd.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 extern struct svc_ops rdma_svc_ops; 85 /* End of Tunables */ 86 87 static int rdma_setup_read_data4(READ4args *, READ4res *); 88 89 /* 90 * Used to bump the stateid4.seqid value and show changes in the stateid 91 */ 92 #define next_stateid(sp) (++(sp)->bits.chgseq) 93 94 /* 95 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 96 * This is used to return NFS4ERR_TOOSMALL when clients specify 97 * maxcount that isn't large enough to hold the smallest possible 98 * XDR encoded dirent. 99 * 100 * sizeof cookie (8 bytes) + 101 * sizeof name_len (4 bytes) + 102 * sizeof smallest (padded) name (4 bytes) + 103 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 104 * sizeof attrlist4_len (4 bytes) + 105 * sizeof next boolean (4 bytes) 106 * 107 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 108 * the smallest possible entry4 (assumes no attrs requested). 109 * sizeof nfsstat4 (4 bytes) + 110 * sizeof verifier4 (8 bytes) + 111 * sizeof entry4list bool (4 bytes) + 112 * sizeof entry4 (36 bytes) + 113 * sizeof eof bool (4 bytes) 114 * 115 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 116 * VOP_READDIR. Its value is the size of the maximum possible dirent 117 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 118 * required for a given name length. MAXNAMELEN is the maximum 119 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 120 * macros are to allow for . and .. entries -- just a minor tweak to try 121 * and guarantee that buffer we give to VOP_READDIR will be large enough 122 * to hold ., .., and the largest possible solaris dirent64. 123 */ 124 #define RFS4_MINLEN_ENTRY4 36 125 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 126 #define RFS4_MINLEN_RDDIR_BUF \ 127 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 128 129 /* 130 * It would be better to pad to 4 bytes since that's what XDR would do, 131 * but the dirents UFS gives us are already padded to 8, so just take 132 * what we're given. Dircount is only a hint anyway. Currently the 133 * solaris kernel is ASCII only, so there's no point in calling the 134 * UTF8 functions. 135 * 136 * dirent64: named padded to provide 8 byte struct alignment 137 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 138 * 139 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 140 * 141 */ 142 #define DIRENT64_TO_DIRCOUNT(dp) \ 143 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 144 145 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 146 147 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 148 149 u_longlong_t nfs4_srv_caller_id; 150 uint_t nfs4_srv_vkey = 0; 151 152 verifier4 Write4verf; 153 verifier4 Readdir4verf; 154 155 void rfs4_init_compound_state(struct compound_state *); 156 157 static void nullfree(caddr_t); 158 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 159 struct compound_state *); 160 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 161 struct compound_state *); 162 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 163 struct compound_state *); 164 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 165 struct compound_state *); 166 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 167 struct compound_state *); 168 static void rfs4_op_create_free(nfs_resop4 *resop); 169 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 170 struct svc_req *, struct compound_state *); 171 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 172 struct svc_req *, struct compound_state *); 173 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 174 struct compound_state *); 175 static void rfs4_op_getattr_free(nfs_resop4 *); 176 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 177 struct compound_state *); 178 static void rfs4_op_getfh_free(nfs_resop4 *); 179 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 180 struct compound_state *); 181 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 182 struct compound_state *); 183 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 184 struct compound_state *); 185 static void lock_denied_free(nfs_resop4 *); 186 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 187 struct compound_state *); 188 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 189 struct compound_state *); 190 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 191 struct compound_state *); 192 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 193 struct compound_state *); 194 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 195 struct svc_req *req, struct compound_state *cs); 196 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 197 struct compound_state *); 198 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 199 struct compound_state *); 200 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 201 struct svc_req *, struct compound_state *); 202 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 203 struct svc_req *, struct compound_state *); 204 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 205 struct compound_state *); 206 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 207 struct compound_state *); 208 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 209 struct compound_state *); 210 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 211 struct compound_state *); 212 static void rfs4_op_read_free(nfs_resop4 *); 213 static void rfs4_op_readdir_free(nfs_resop4 *resop); 214 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 215 struct compound_state *); 216 static void rfs4_op_readlink_free(nfs_resop4 *); 217 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 218 struct svc_req *, struct compound_state *); 219 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 220 struct compound_state *); 221 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 222 struct compound_state *); 223 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 224 struct compound_state *); 225 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 226 struct compound_state *); 227 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 228 struct compound_state *); 229 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 230 struct compound_state *); 231 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 232 struct compound_state *); 233 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 234 struct compound_state *); 235 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 236 struct svc_req *, struct compound_state *); 237 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 238 struct svc_req *req, struct compound_state *); 239 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 240 struct compound_state *); 241 static void rfs4_op_secinfo_free(nfs_resop4 *); 242 243 static nfsstat4 check_open_access(uint32_t, 244 struct compound_state *, struct svc_req *); 245 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 246 static int vop_shrlock(vnode_t *, int, struct shrlock *, int); 247 static int rfs4_shrlock(rfs4_state_t *, int); 248 static int rfs4_share(rfs4_state_t *); 249 void rfs4_ss_clid(rfs4_client_t *, struct svc_req *); 250 251 /* 252 * translation table for attrs 253 */ 254 struct nfs4_ntov_table { 255 union nfs4_attr_u *na; 256 uint8_t amap[NFS4_MAXNUM_ATTRS]; 257 int attrcnt; 258 bool_t vfsstat; 259 }; 260 261 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 262 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 263 struct nfs4_svgetit_arg *sargp); 264 265 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 266 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 267 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 268 269 fem_t *deleg_rdops; 270 fem_t *deleg_wrops; 271 272 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 273 kmutex_t rfs4_servinst_lock; /* protects linked list */ 274 int rfs4_seen_first_compound; /* set first time we see one */ 275 276 /* 277 * NFS4 op dispatch table 278 */ 279 280 struct rfsv4disp { 281 void (*dis_proc)(); /* proc to call */ 282 void (*dis_resfree)(); /* frees space allocated by proc */ 283 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 284 }; 285 286 static struct rfsv4disp rfsv4disptab[] = { 287 /* 288 * NFS VERSION 4 289 */ 290 291 /* RFS_NULL = 0 */ 292 {rfs4_op_illegal, nullfree, 0}, 293 294 /* UNUSED = 1 */ 295 {rfs4_op_illegal, nullfree, 0}, 296 297 /* UNUSED = 2 */ 298 {rfs4_op_illegal, nullfree, 0}, 299 300 /* OP_ACCESS = 3 */ 301 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 302 303 /* OP_CLOSE = 4 */ 304 {rfs4_op_close, nullfree, 0}, 305 306 /* OP_COMMIT = 5 */ 307 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 308 309 /* OP_CREATE = 6 */ 310 {rfs4_op_create, nullfree, 0}, 311 312 /* OP_DELEGPURGE = 7 */ 313 {rfs4_op_delegpurge, nullfree, 0}, 314 315 /* OP_DELEGRETURN = 8 */ 316 {rfs4_op_delegreturn, nullfree, 0}, 317 318 /* OP_GETATTR = 9 */ 319 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 320 321 /* OP_GETFH = 10 */ 322 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 323 324 /* OP_LINK = 11 */ 325 {rfs4_op_link, nullfree, 0}, 326 327 /* OP_LOCK = 12 */ 328 {rfs4_op_lock, lock_denied_free, 0}, 329 330 /* OP_LOCKT = 13 */ 331 {rfs4_op_lockt, lock_denied_free, 0}, 332 333 /* OP_LOCKU = 14 */ 334 {rfs4_op_locku, nullfree, 0}, 335 336 /* OP_LOOKUP = 15 */ 337 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 338 339 /* OP_LOOKUPP = 16 */ 340 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 341 342 /* OP_NVERIFY = 17 */ 343 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 344 345 /* OP_OPEN = 18 */ 346 {rfs4_op_open, rfs4_free_reply, 0}, 347 348 /* OP_OPENATTR = 19 */ 349 {rfs4_op_openattr, nullfree, 0}, 350 351 /* OP_OPEN_CONFIRM = 20 */ 352 {rfs4_op_open_confirm, nullfree, 0}, 353 354 /* OP_OPEN_DOWNGRADE = 21 */ 355 {rfs4_op_open_downgrade, nullfree, 0}, 356 357 /* OP_OPEN_PUTFH = 22 */ 358 {rfs4_op_putfh, nullfree, RPC_ALL}, 359 360 /* OP_PUTPUBFH = 23 */ 361 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 362 363 /* OP_PUTROOTFH = 24 */ 364 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 365 366 /* OP_READ = 25 */ 367 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 368 369 /* OP_READDIR = 26 */ 370 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 371 372 /* OP_READLINK = 27 */ 373 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 374 375 /* OP_REMOVE = 28 */ 376 {rfs4_op_remove, nullfree, 0}, 377 378 /* OP_RENAME = 29 */ 379 {rfs4_op_rename, nullfree, 0}, 380 381 /* OP_RENEW = 30 */ 382 {rfs4_op_renew, nullfree, 0}, 383 384 /* OP_RESTOREFH = 31 */ 385 {rfs4_op_restorefh, nullfree, RPC_ALL}, 386 387 /* OP_SAVEFH = 32 */ 388 {rfs4_op_savefh, nullfree, RPC_ALL}, 389 390 /* OP_SECINFO = 33 */ 391 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 392 393 /* OP_SETATTR = 34 */ 394 {rfs4_op_setattr, nullfree, 0}, 395 396 /* OP_SETCLIENTID = 35 */ 397 {rfs4_op_setclientid, nullfree, 0}, 398 399 /* OP_SETCLIENTID_CONFIRM = 36 */ 400 {rfs4_op_setclientid_confirm, nullfree, 0}, 401 402 /* OP_VERIFY = 37 */ 403 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 404 405 /* OP_WRITE = 38 */ 406 {rfs4_op_write, nullfree, 0}, 407 408 /* OP_RELEASE_LOCKOWNER = 39 */ 409 {rfs4_op_release_lockowner, nullfree, 0}, 410 }; 411 412 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 413 414 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 415 416 #ifdef DEBUG 417 418 int rfs4_fillone_debug = 0; 419 int rfs4_shrlock_debug = 0; 420 int rfs4_no_stub_access = 1; 421 int rfs4_rddir_debug = 0; 422 423 static char *rfs4_op_string[] = { 424 "rfs4_op_null", 425 "rfs4_op_1 unused", 426 "rfs4_op_2 unused", 427 "rfs4_op_access", 428 "rfs4_op_close", 429 "rfs4_op_commit", 430 "rfs4_op_create", 431 "rfs4_op_delegpurge", 432 "rfs4_op_delegreturn", 433 "rfs4_op_getattr", 434 "rfs4_op_getfh", 435 "rfs4_op_link", 436 "rfs4_op_lock", 437 "rfs4_op_lockt", 438 "rfs4_op_locku", 439 "rfs4_op_lookup", 440 "rfs4_op_lookupp", 441 "rfs4_op_nverify", 442 "rfs4_op_open", 443 "rfs4_op_openattr", 444 "rfs4_op_open_confirm", 445 "rfs4_op_open_downgrade", 446 "rfs4_op_putfh", 447 "rfs4_op_putpubfh", 448 "rfs4_op_putrootfh", 449 "rfs4_op_read", 450 "rfs4_op_readdir", 451 "rfs4_op_readlink", 452 "rfs4_op_remove", 453 "rfs4_op_rename", 454 "rfs4_op_renew", 455 "rfs4_op_restorefh", 456 "rfs4_op_savefh", 457 "rfs4_op_secinfo", 458 "rfs4_op_setattr", 459 "rfs4_op_setclientid", 460 "rfs4_op_setclient_confirm", 461 "rfs4_op_verify", 462 "rfs4_op_write", 463 "rfs4_op_release_lockowner", 464 "rfs4_op_illegal" 465 }; 466 #endif 467 468 void rfs4_ss_chkclid(rfs4_client_t *); 469 470 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 471 472 #ifdef nextdp 473 #undef nextdp 474 #endif 475 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 476 477 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 478 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 479 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 480 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 481 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 482 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 483 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 484 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 485 NULL, NULL 486 }; 487 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 488 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 489 VOPNAME_READ, { .femop_read = deleg_wr_read }, 490 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 491 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 492 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 493 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 494 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 495 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 496 NULL, NULL 497 }; 498 499 int 500 rfs4_srvrinit(void) 501 { 502 timespec32_t verf; 503 int error; 504 extern void rfs4_attr_init(); 505 extern krwlock_t rfs4_deleg_policy_lock; 506 507 /* 508 * The following algorithm attempts to find a unique verifier 509 * to be used as the write verifier returned from the server 510 * to the client. It is important that this verifier change 511 * whenever the server reboots. Of secondary importance, it 512 * is important for the verifier to be unique between two 513 * different servers. 514 * 515 * Thus, an attempt is made to use the system hostid and the 516 * current time in seconds when the nfssrv kernel module is 517 * loaded. It is assumed that an NFS server will not be able 518 * to boot and then to reboot in less than a second. If the 519 * hostid has not been set, then the current high resolution 520 * time is used. This will ensure different verifiers each 521 * time the server reboots and minimize the chances that two 522 * different servers will have the same verifier. 523 * XXX - this is broken on LP64 kernels. 524 */ 525 verf.tv_sec = (time_t)zone_get_hostid(NULL); 526 if (verf.tv_sec != 0) { 527 verf.tv_nsec = gethrestime_sec(); 528 } else { 529 timespec_t tverf; 530 531 gethrestime(&tverf); 532 verf.tv_sec = (time_t)tverf.tv_sec; 533 verf.tv_nsec = tverf.tv_nsec; 534 } 535 536 Write4verf = *(uint64_t *)&verf; 537 538 rfs4_attr_init(); 539 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 540 541 /* Used to manage create/destroy of server state */ 542 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 543 544 /* Used to manage access to server instance linked list */ 545 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 546 547 /* Used to manage access to rfs4_deleg_policy */ 548 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 549 550 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 551 if (error != 0) { 552 rfs4_disable_delegation(); 553 } else { 554 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 555 &deleg_wrops); 556 if (error != 0) { 557 rfs4_disable_delegation(); 558 fem_free(deleg_rdops); 559 } 560 } 561 562 nfs4_srv_caller_id = fs_new_caller_id(); 563 564 lockt_sysid = lm_alloc_sysidt(); 565 566 vsd_create(&nfs4_srv_vkey, NULL); 567 568 return (0); 569 } 570 571 void 572 rfs4_srvrfini(void) 573 { 574 extern krwlock_t rfs4_deleg_policy_lock; 575 576 if (lockt_sysid != LM_NOSYSID) { 577 lm_free_sysidt(lockt_sysid); 578 lockt_sysid = LM_NOSYSID; 579 } 580 581 mutex_destroy(&rfs4_deleg_lock); 582 mutex_destroy(&rfs4_state_lock); 583 rw_destroy(&rfs4_deleg_policy_lock); 584 585 fem_free(deleg_rdops); 586 fem_free(deleg_wrops); 587 } 588 589 void 590 rfs4_init_compound_state(struct compound_state *cs) 591 { 592 bzero(cs, sizeof (*cs)); 593 cs->cont = TRUE; 594 cs->access = CS_ACCESS_DENIED; 595 cs->deleg = FALSE; 596 cs->mandlock = FALSE; 597 cs->fh.nfs_fh4_val = cs->fhbuf; 598 } 599 600 void 601 rfs4_grace_start(rfs4_servinst_t *sip) 602 { 603 rw_enter(&sip->rwlock, RW_WRITER); 604 sip->start_time = (time_t)TICK_TO_SEC(lbolt); 605 sip->grace_period = rfs4_grace_period; 606 rw_exit(&sip->rwlock); 607 } 608 609 /* 610 * returns true if the instance's grace period has never been started 611 */ 612 int 613 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 614 { 615 time_t start_time; 616 617 rw_enter(&sip->rwlock, RW_READER); 618 start_time = sip->start_time; 619 rw_exit(&sip->rwlock); 620 621 return (start_time == 0); 622 } 623 624 /* 625 * Indicates if server instance is within the 626 * grace period. 627 */ 628 int 629 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 630 { 631 time_t grace_expiry; 632 633 rw_enter(&sip->rwlock, RW_READER); 634 grace_expiry = sip->start_time + sip->grace_period; 635 rw_exit(&sip->rwlock); 636 637 return (((time_t)TICK_TO_SEC(lbolt)) < grace_expiry); 638 } 639 640 int 641 rfs4_clnt_in_grace(rfs4_client_t *cp) 642 { 643 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 644 645 return (rfs4_servinst_in_grace(cp->server_instance)); 646 } 647 648 /* 649 * reset all currently active grace periods 650 */ 651 void 652 rfs4_grace_reset_all(void) 653 { 654 rfs4_servinst_t *sip; 655 656 mutex_enter(&rfs4_servinst_lock); 657 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 658 if (rfs4_servinst_in_grace(sip)) 659 rfs4_grace_start(sip); 660 mutex_exit(&rfs4_servinst_lock); 661 } 662 663 /* 664 * start any new instances' grace periods 665 */ 666 void 667 rfs4_grace_start_new(void) 668 { 669 rfs4_servinst_t *sip; 670 671 mutex_enter(&rfs4_servinst_lock); 672 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 673 if (rfs4_servinst_grace_new(sip)) 674 rfs4_grace_start(sip); 675 mutex_exit(&rfs4_servinst_lock); 676 } 677 678 static rfs4_dss_path_t * 679 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 680 { 681 size_t len; 682 rfs4_dss_path_t *dss_path; 683 684 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 685 686 /* 687 * Take a copy of the string, since the original may be overwritten. 688 * Sadly, no strdup() in the kernel. 689 */ 690 /* allow for NUL */ 691 len = strlen(path) + 1; 692 dss_path->path = kmem_alloc(len, KM_SLEEP); 693 (void) strlcpy(dss_path->path, path, len); 694 695 /* associate with servinst */ 696 dss_path->sip = sip; 697 dss_path->index = index; 698 699 /* 700 * Add to list of served paths. 701 * No locking required, as we're only ever called at startup. 702 */ 703 if (rfs4_dss_pathlist == NULL) { 704 /* this is the first dss_path_t */ 705 706 /* needed for insque/remque */ 707 dss_path->next = dss_path->prev = dss_path; 708 709 rfs4_dss_pathlist = dss_path; 710 } else { 711 insque(dss_path, rfs4_dss_pathlist); 712 } 713 714 return (dss_path); 715 } 716 717 /* 718 * Create a new server instance, and make it the currently active instance. 719 * Note that starting the grace period too early will reduce the clients' 720 * recovery window. 721 */ 722 void 723 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 724 { 725 unsigned i; 726 rfs4_servinst_t *sip; 727 rfs4_oldstate_t *oldstate; 728 729 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 730 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 731 732 sip->start_time = (time_t)0; 733 sip->grace_period = (time_t)0; 734 sip->next = NULL; 735 sip->prev = NULL; 736 737 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 738 /* 739 * This initial dummy entry is required to setup for insque/remque. 740 * It must be skipped over whenever the list is traversed. 741 */ 742 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 743 /* insque/remque require initial list entry to be self-terminated */ 744 oldstate->next = oldstate; 745 oldstate->prev = oldstate; 746 sip->oldstate = oldstate; 747 748 749 sip->dss_npaths = dss_npaths; 750 sip->dss_paths = kmem_alloc(dss_npaths * 751 sizeof (rfs4_dss_path_t *), KM_SLEEP); 752 753 for (i = 0; i < dss_npaths; i++) { 754 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 755 } 756 757 mutex_enter(&rfs4_servinst_lock); 758 if (rfs4_cur_servinst != NULL) { 759 /* add to linked list */ 760 sip->prev = rfs4_cur_servinst; 761 rfs4_cur_servinst->next = sip; 762 } 763 if (start_grace) 764 rfs4_grace_start(sip); 765 /* make the new instance "current" */ 766 rfs4_cur_servinst = sip; 767 768 mutex_exit(&rfs4_servinst_lock); 769 } 770 771 /* 772 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 773 * all instances directly. 774 */ 775 void 776 rfs4_servinst_destroy_all(void) 777 { 778 rfs4_servinst_t *sip, *prev, *current; 779 #ifdef DEBUG 780 int n = 0; 781 #endif 782 783 mutex_enter(&rfs4_servinst_lock); 784 ASSERT(rfs4_cur_servinst != NULL); 785 current = rfs4_cur_servinst; 786 rfs4_cur_servinst = NULL; 787 for (sip = current; sip != NULL; sip = prev) { 788 prev = sip->prev; 789 rw_destroy(&sip->rwlock); 790 if (sip->oldstate) 791 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 792 if (sip->dss_paths) 793 kmem_free(sip->dss_paths, 794 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 795 kmem_free(sip, sizeof (rfs4_servinst_t)); 796 #ifdef DEBUG 797 n++; 798 #endif 799 } 800 mutex_exit(&rfs4_servinst_lock); 801 } 802 803 /* 804 * Assign the current server instance to a client_t. 805 * Should be called with cp->dbe held. 806 */ 807 void 808 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 809 { 810 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 811 812 /* 813 * The lock ensures that if the current instance is in the process 814 * of changing, we will see the new one. 815 */ 816 mutex_enter(&rfs4_servinst_lock); 817 cp->server_instance = sip; 818 mutex_exit(&rfs4_servinst_lock); 819 } 820 821 rfs4_servinst_t * 822 rfs4_servinst(rfs4_client_t *cp) 823 { 824 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 825 826 return (cp->server_instance); 827 } 828 829 /* ARGSUSED */ 830 static void 831 nullfree(caddr_t resop) 832 { 833 } 834 835 /* 836 * This is a fall-through for invalid or not implemented (yet) ops 837 */ 838 /* ARGSUSED */ 839 static void 840 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 841 struct compound_state *cs) 842 { 843 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 844 } 845 846 /* 847 * Check if the security flavor, nfsnum, is in the flavor_list. 848 */ 849 bool_t 850 in_flavor_list(int nfsnum, int *flavor_list, int count) 851 { 852 int i; 853 854 for (i = 0; i < count; i++) { 855 if (nfsnum == flavor_list[i]) 856 return (TRUE); 857 } 858 return (FALSE); 859 } 860 861 /* 862 * Used by rfs4_op_secinfo to get the security information from the 863 * export structure associated with the component. 864 */ 865 /* ARGSUSED */ 866 static nfsstat4 867 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 868 { 869 int error, different_export = 0; 870 vnode_t *dvp, *vp, *tvp; 871 struct exportinfo *exi = NULL; 872 fid_t fid; 873 uint_t count, i; 874 secinfo4 *resok_val; 875 struct secinfo *secp; 876 seconfig_t *si; 877 bool_t did_traverse; 878 int dotdot, walk; 879 880 dvp = cs->vp; 881 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 882 883 /* 884 * If dotdotting, then need to check whether it's above the 885 * root of a filesystem, or above an export point. 886 */ 887 if (dotdot) { 888 889 /* 890 * If dotdotting at the root of a filesystem, then 891 * need to traverse back to the mounted-on filesystem 892 * and do the dotdot lookup there. 893 */ 894 if (cs->vp->v_flag & VROOT) { 895 896 /* 897 * If at the system root, then can 898 * go up no further. 899 */ 900 if (VN_CMP(dvp, rootdir)) 901 return (puterrno4(ENOENT)); 902 903 /* 904 * Traverse back to the mounted-on filesystem 905 */ 906 dvp = untraverse(cs->vp); 907 908 /* 909 * Set the different_export flag so we remember 910 * to pick up a new exportinfo entry for 911 * this new filesystem. 912 */ 913 different_export = 1; 914 } else { 915 916 /* 917 * If dotdotting above an export point then set 918 * the different_export to get new export info. 919 */ 920 different_export = nfs_exported(cs->exi, cs->vp); 921 } 922 } 923 924 /* 925 * Get the vnode for the component "nm". 926 */ 927 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 928 NULL, NULL, NULL); 929 if (error) 930 return (puterrno4(error)); 931 932 /* 933 * If the vnode is in a pseudo filesystem, or if the security flavor 934 * used in the request is valid but not an explicitly shared flavor, 935 * or the access bit indicates that this is a limited access, 936 * check whether this vnode is visible. 937 */ 938 if (!different_export && 939 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 940 cs->access & CS_ACCESS_LIMITED)) { 941 if (! nfs_visible(cs->exi, vp, &different_export)) { 942 VN_RELE(vp); 943 return (puterrno4(ENOENT)); 944 } 945 } 946 947 /* 948 * If it's a mountpoint, then traverse it. 949 */ 950 if (vn_ismntpt(vp)) { 951 tvp = vp; 952 if ((error = traverse(&tvp)) != 0) { 953 VN_RELE(vp); 954 return (puterrno4(error)); 955 } 956 /* remember that we had to traverse mountpoint */ 957 did_traverse = TRUE; 958 vp = tvp; 959 different_export = 1; 960 } else if (vp->v_vfsp != dvp->v_vfsp) { 961 /* 962 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 963 * then vp is probably an LOFS object. We don't need the 964 * realvp, we just need to know that we might have crossed 965 * a server fs boundary and need to call checkexport4. 966 * (LOFS lookup hides server fs mountpoints, and actually calls 967 * traverse) 968 */ 969 different_export = 1; 970 did_traverse = FALSE; 971 } 972 973 /* 974 * Get the export information for it. 975 */ 976 if (different_export) { 977 978 bzero(&fid, sizeof (fid)); 979 fid.fid_len = MAXFIDSZ; 980 error = vop_fid_pseudo(vp, &fid); 981 if (error) { 982 VN_RELE(vp); 983 return (puterrno4(error)); 984 } 985 986 if (dotdot) 987 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 988 else 989 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 990 991 if (exi == NULL) { 992 if (did_traverse == TRUE) { 993 /* 994 * If this vnode is a mounted-on vnode, 995 * but the mounted-on file system is not 996 * exported, send back the secinfo for 997 * the exported node that the mounted-on 998 * vnode lives in. 999 */ 1000 exi = cs->exi; 1001 } else { 1002 VN_RELE(vp); 1003 return (puterrno4(EACCES)); 1004 } 1005 } 1006 } else { 1007 exi = cs->exi; 1008 } 1009 ASSERT(exi != NULL); 1010 1011 1012 /* 1013 * Create the secinfo result based on the security information 1014 * from the exportinfo structure (exi). 1015 * 1016 * Return all flavors for a pseudo node. 1017 * For a real export node, return the flavor that the client 1018 * has access with. 1019 */ 1020 ASSERT(RW_LOCK_HELD(&exported_lock)); 1021 if (PSEUDO(exi)) { 1022 count = exi->exi_export.ex_seccnt; /* total sec count */ 1023 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1024 secp = exi->exi_export.ex_secinfo; 1025 1026 for (i = 0; i < count; i++) { 1027 si = &secp[i].s_secinfo; 1028 resok_val[i].flavor = si->sc_rpcnum; 1029 if (resok_val[i].flavor == RPCSEC_GSS) { 1030 rpcsec_gss_info *info; 1031 1032 info = &resok_val[i].flavor_info; 1033 info->qop = si->sc_qop; 1034 info->service = (rpc_gss_svc_t)si->sc_service; 1035 1036 /* get oid opaque data */ 1037 info->oid.sec_oid4_len = 1038 si->sc_gss_mech_type->length; 1039 info->oid.sec_oid4_val = kmem_alloc( 1040 si->sc_gss_mech_type->length, KM_SLEEP); 1041 bcopy( 1042 si->sc_gss_mech_type->elements, 1043 info->oid.sec_oid4_val, 1044 info->oid.sec_oid4_len); 1045 } 1046 } 1047 resp->SECINFO4resok_len = count; 1048 resp->SECINFO4resok_val = resok_val; 1049 } else { 1050 int ret_cnt = 0, k = 0; 1051 int *flavor_list; 1052 1053 count = exi->exi_export.ex_seccnt; /* total sec count */ 1054 secp = exi->exi_export.ex_secinfo; 1055 1056 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1057 /* find out which flavors to return */ 1058 for (i = 0; i < count; i ++) { 1059 int access, flavor, perm; 1060 1061 flavor = secp[i].s_secinfo.sc_nfsnum; 1062 perm = secp[i].s_flags; 1063 1064 access = nfsauth4_secinfo_access(exi, cs->req, 1065 flavor, perm); 1066 1067 if (! (access & NFSAUTH_DENIED) && 1068 ! (access & NFSAUTH_WRONGSEC)) { 1069 flavor_list[ret_cnt] = flavor; 1070 ret_cnt++; 1071 } 1072 } 1073 1074 /* Create the returning SECINFO value */ 1075 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1076 1077 for (i = 0; i < count; i++) { 1078 /* 1079 * If the flavor is in the flavor list, 1080 * fill in resok_val. 1081 */ 1082 si = &secp[i].s_secinfo; 1083 if (in_flavor_list(si->sc_nfsnum, 1084 flavor_list, ret_cnt)) { 1085 resok_val[k].flavor = si->sc_rpcnum; 1086 if (resok_val[k].flavor == RPCSEC_GSS) { 1087 rpcsec_gss_info *info; 1088 1089 info = &resok_val[k].flavor_info; 1090 info->qop = si->sc_qop; 1091 info->service = (rpc_gss_svc_t) 1092 si->sc_service; 1093 1094 /* get oid opaque data */ 1095 info->oid.sec_oid4_len = 1096 si->sc_gss_mech_type->length; 1097 info->oid.sec_oid4_val = kmem_alloc( 1098 si->sc_gss_mech_type->length, 1099 KM_SLEEP); 1100 bcopy(si->sc_gss_mech_type->elements, 1101 info->oid.sec_oid4_val, 1102 info->oid.sec_oid4_len); 1103 } 1104 k++; 1105 } 1106 if (k >= ret_cnt) 1107 break; 1108 } 1109 resp->SECINFO4resok_len = ret_cnt; 1110 resp->SECINFO4resok_val = resok_val; 1111 kmem_free(flavor_list, count * sizeof (int)); 1112 } 1113 1114 VN_RELE(vp); 1115 return (NFS4_OK); 1116 } 1117 1118 /* 1119 * SECINFO (Operation 33): Obtain required security information on 1120 * the component name in the format of (security-mechanism-oid, qop, service) 1121 * triplets. 1122 */ 1123 /* ARGSUSED */ 1124 static void 1125 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1126 struct compound_state *cs) 1127 { 1128 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1129 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1130 utf8string *utfnm = &args->name; 1131 uint_t len; 1132 char *nm; 1133 struct sockaddr *ca; 1134 char *name = NULL; 1135 1136 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1137 SECINFO4args *, args); 1138 1139 /* 1140 * Current file handle (cfh) should have been set before getting 1141 * into this function. If not, return error. 1142 */ 1143 if (cs->vp == NULL) { 1144 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1145 goto out; 1146 } 1147 1148 if (cs->vp->v_type != VDIR) { 1149 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1150 goto out; 1151 } 1152 1153 /* 1154 * Verify the component name. If failed, error out, but 1155 * do not error out if the component name is a "..". 1156 * SECINFO will return its parents secinfo data for SECINFO "..". 1157 */ 1158 if (!utf8_dir_verify(utfnm)) { 1159 if (utfnm->utf8string_len != 2 || 1160 utfnm->utf8string_val[0] != '.' || 1161 utfnm->utf8string_val[1] != '.') { 1162 *cs->statusp = resp->status = NFS4ERR_INVAL; 1163 goto out; 1164 } 1165 } 1166 1167 nm = utf8_to_str(utfnm, &len, NULL); 1168 if (nm == NULL) { 1169 *cs->statusp = resp->status = NFS4ERR_INVAL; 1170 goto out; 1171 } 1172 1173 if (len > MAXNAMELEN) { 1174 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1175 kmem_free(nm, len); 1176 goto out; 1177 } 1178 /* If necessary, convert to UTF-8 for illbehaved clients */ 1179 1180 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1181 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1182 MAXPATHLEN + 1); 1183 1184 if (name == NULL) { 1185 *cs->statusp = resp->status = NFS4ERR_INVAL; 1186 kmem_free(nm, len); 1187 goto out; 1188 } 1189 1190 1191 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1192 1193 if (name != nm) 1194 kmem_free(name, MAXPATHLEN + 1); 1195 kmem_free(nm, len); 1196 1197 out: 1198 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1199 SECINFO4res *, resp); 1200 } 1201 1202 /* 1203 * Free SECINFO result. 1204 */ 1205 /* ARGSUSED */ 1206 static void 1207 rfs4_op_secinfo_free(nfs_resop4 *resop) 1208 { 1209 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1210 int count, i; 1211 secinfo4 *resok_val; 1212 1213 /* If this is not an Ok result, nothing to free. */ 1214 if (resp->status != NFS4_OK) { 1215 return; 1216 } 1217 1218 count = resp->SECINFO4resok_len; 1219 resok_val = resp->SECINFO4resok_val; 1220 1221 for (i = 0; i < count; i++) { 1222 if (resok_val[i].flavor == RPCSEC_GSS) { 1223 rpcsec_gss_info *info; 1224 1225 info = &resok_val[i].flavor_info; 1226 kmem_free(info->oid.sec_oid4_val, 1227 info->oid.sec_oid4_len); 1228 } 1229 } 1230 kmem_free(resok_val, count * sizeof (secinfo4)); 1231 resp->SECINFO4resok_len = 0; 1232 resp->SECINFO4resok_val = NULL; 1233 } 1234 1235 /* ARGSUSED */ 1236 static void 1237 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1238 struct compound_state *cs) 1239 { 1240 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1241 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1242 int error; 1243 vnode_t *vp; 1244 struct vattr va; 1245 int checkwriteperm; 1246 cred_t *cr = cs->cr; 1247 bslabel_t *clabel, *slabel; 1248 ts_label_t *tslabel; 1249 boolean_t admin_low_client; 1250 1251 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1252 ACCESS4args *, args); 1253 1254 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1255 if (cs->access == CS_ACCESS_DENIED) { 1256 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1257 goto out; 1258 } 1259 #endif 1260 if (cs->vp == NULL) { 1261 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1262 goto out; 1263 } 1264 1265 ASSERT(cr != NULL); 1266 1267 vp = cs->vp; 1268 1269 /* 1270 * If the file system is exported read only, it is not appropriate 1271 * to check write permissions for regular files and directories. 1272 * Special files are interpreted by the client, so the underlying 1273 * permissions are sent back to the client for interpretation. 1274 */ 1275 if (rdonly4(cs->exi, cs->vp, req) && 1276 (vp->v_type == VREG || vp->v_type == VDIR)) 1277 checkwriteperm = 0; 1278 else 1279 checkwriteperm = 1; 1280 1281 /* 1282 * XXX 1283 * We need the mode so that we can correctly determine access 1284 * permissions relative to a mandatory lock file. Access to 1285 * mandatory lock files is denied on the server, so it might 1286 * as well be reflected to the server during the open. 1287 */ 1288 va.va_mask = AT_MODE; 1289 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1290 if (error) { 1291 *cs->statusp = resp->status = puterrno4(error); 1292 goto out; 1293 } 1294 resp->access = 0; 1295 resp->supported = 0; 1296 1297 if (is_system_labeled()) { 1298 ASSERT(req->rq_label != NULL); 1299 clabel = req->rq_label; 1300 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1301 "got client label from request(1)", 1302 struct svc_req *, req); 1303 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1304 if ((tslabel = nfs_getflabel(vp)) == NULL) { 1305 *cs->statusp = resp->status = puterrno4(EACCES); 1306 goto out; 1307 } 1308 slabel = label2bslabel(tslabel); 1309 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1310 char *, "got server label(1) for vp(2)", 1311 bslabel_t *, slabel, vnode_t *, vp); 1312 1313 admin_low_client = B_FALSE; 1314 } else 1315 admin_low_client = B_TRUE; 1316 } 1317 1318 if (args->access & ACCESS4_READ) { 1319 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1320 if (!error && !MANDLOCK(vp, va.va_mode) && 1321 (!is_system_labeled() || admin_low_client || 1322 bldominates(clabel, slabel))) 1323 resp->access |= ACCESS4_READ; 1324 resp->supported |= ACCESS4_READ; 1325 } 1326 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1327 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1328 if (!error && (!is_system_labeled() || admin_low_client || 1329 bldominates(clabel, slabel))) 1330 resp->access |= ACCESS4_LOOKUP; 1331 resp->supported |= ACCESS4_LOOKUP; 1332 } 1333 if (checkwriteperm && 1334 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1335 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1336 if (!error && !MANDLOCK(vp, va.va_mode) && 1337 (!is_system_labeled() || admin_low_client || 1338 blequal(clabel, slabel))) 1339 resp->access |= 1340 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1341 resp->supported |= (ACCESS4_MODIFY | ACCESS4_EXTEND); 1342 } 1343 1344 if (checkwriteperm && 1345 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1346 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1347 if (!error && (!is_system_labeled() || admin_low_client || 1348 blequal(clabel, slabel))) 1349 resp->access |= ACCESS4_DELETE; 1350 resp->supported |= ACCESS4_DELETE; 1351 } 1352 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1353 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1354 if (!error && !MANDLOCK(vp, va.va_mode) && 1355 (!is_system_labeled() || admin_low_client || 1356 bldominates(clabel, slabel))) 1357 resp->access |= ACCESS4_EXECUTE; 1358 resp->supported |= ACCESS4_EXECUTE; 1359 } 1360 1361 if (is_system_labeled() && !admin_low_client) 1362 label_rele(tslabel); 1363 1364 *cs->statusp = resp->status = NFS4_OK; 1365 out: 1366 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1367 ACCESS4res *, resp); 1368 } 1369 1370 /* ARGSUSED */ 1371 static void 1372 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1373 struct compound_state *cs) 1374 { 1375 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1376 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1377 int error; 1378 vnode_t *vp = cs->vp; 1379 cred_t *cr = cs->cr; 1380 vattr_t va; 1381 1382 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1383 COMMIT4args *, args); 1384 1385 if (vp == NULL) { 1386 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1387 goto out; 1388 } 1389 if (cs->access == CS_ACCESS_DENIED) { 1390 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1391 goto out; 1392 } 1393 1394 if (args->offset + args->count < args->offset) { 1395 *cs->statusp = resp->status = NFS4ERR_INVAL; 1396 goto out; 1397 } 1398 1399 va.va_mask = AT_UID; 1400 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1401 1402 /* 1403 * If we can't get the attributes, then we can't do the 1404 * right access checking. So, we'll fail the request. 1405 */ 1406 if (error) { 1407 *cs->statusp = resp->status = puterrno4(error); 1408 goto out; 1409 } 1410 if (rdonly4(cs->exi, cs->vp, req)) { 1411 *cs->statusp = resp->status = NFS4ERR_ROFS; 1412 goto out; 1413 } 1414 1415 if (vp->v_type != VREG) { 1416 if (vp->v_type == VDIR) 1417 resp->status = NFS4ERR_ISDIR; 1418 else 1419 resp->status = NFS4ERR_INVAL; 1420 *cs->statusp = resp->status; 1421 goto out; 1422 } 1423 1424 if (crgetuid(cr) != va.va_uid && 1425 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1426 *cs->statusp = resp->status = puterrno4(error); 1427 goto out; 1428 } 1429 1430 error = VOP_PUTPAGE(vp, args->offset, args->count, 0, cr, NULL); 1431 if (!error) 1432 error = VOP_FSYNC(vp, FNODSYNC, cr, NULL); 1433 1434 if (error) { 1435 *cs->statusp = resp->status = puterrno4(error); 1436 goto out; 1437 } 1438 1439 *cs->statusp = resp->status = NFS4_OK; 1440 resp->writeverf = Write4verf; 1441 out: 1442 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1443 COMMIT4res *, resp); 1444 } 1445 1446 /* 1447 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1448 * was completed. It does the nfsv4 create for special files. 1449 */ 1450 /* ARGSUSED */ 1451 static vnode_t * 1452 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1453 struct compound_state *cs, vattr_t *vap, char *nm) 1454 { 1455 int error; 1456 cred_t *cr = cs->cr; 1457 vnode_t *dvp = cs->vp; 1458 vnode_t *vp = NULL; 1459 int mode; 1460 enum vcexcl excl; 1461 1462 switch (args->type) { 1463 case NF4CHR: 1464 case NF4BLK: 1465 if (secpolicy_sys_devices(cr) != 0) { 1466 *cs->statusp = resp->status = NFS4ERR_PERM; 1467 return (NULL); 1468 } 1469 if (args->type == NF4CHR) 1470 vap->va_type = VCHR; 1471 else 1472 vap->va_type = VBLK; 1473 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1474 args->ftype4_u.devdata.specdata2); 1475 vap->va_mask |= AT_RDEV; 1476 break; 1477 case NF4SOCK: 1478 vap->va_type = VSOCK; 1479 break; 1480 case NF4FIFO: 1481 vap->va_type = VFIFO; 1482 break; 1483 default: 1484 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1485 return (NULL); 1486 } 1487 1488 /* 1489 * Must specify the mode. 1490 */ 1491 if (!(vap->va_mask & AT_MODE)) { 1492 *cs->statusp = resp->status = NFS4ERR_INVAL; 1493 return (NULL); 1494 } 1495 1496 excl = EXCL; 1497 1498 mode = 0; 1499 1500 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1501 if (error) { 1502 *cs->statusp = resp->status = puterrno4(error); 1503 return (NULL); 1504 } 1505 return (vp); 1506 } 1507 1508 /* 1509 * nfsv4 create is used to create non-regular files. For regular files, 1510 * use nfsv4 open. 1511 */ 1512 /* ARGSUSED */ 1513 static void 1514 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1515 struct compound_state *cs) 1516 { 1517 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1518 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1519 int error; 1520 struct vattr bva, iva, iva2, ava, *vap; 1521 cred_t *cr = cs->cr; 1522 vnode_t *dvp = cs->vp; 1523 vnode_t *vp = NULL; 1524 vnode_t *realvp; 1525 char *nm, *lnm; 1526 uint_t len, llen; 1527 int syncval = 0; 1528 struct nfs4_svgetit_arg sarg; 1529 struct nfs4_ntov_table ntov; 1530 struct statvfs64 sb; 1531 nfsstat4 status; 1532 struct sockaddr *ca; 1533 char *name = NULL; 1534 char *lname = NULL; 1535 1536 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1537 CREATE4args *, args); 1538 1539 resp->attrset = 0; 1540 1541 if (dvp == NULL) { 1542 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1543 goto out; 1544 } 1545 1546 /* 1547 * If there is an unshared filesystem mounted on this vnode, 1548 * do not allow to create an object in this directory. 1549 */ 1550 if (vn_ismntpt(dvp)) { 1551 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1552 goto out; 1553 } 1554 1555 /* Verify that type is correct */ 1556 switch (args->type) { 1557 case NF4LNK: 1558 case NF4BLK: 1559 case NF4CHR: 1560 case NF4SOCK: 1561 case NF4FIFO: 1562 case NF4DIR: 1563 break; 1564 default: 1565 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1566 goto out; 1567 }; 1568 1569 if (cs->access == CS_ACCESS_DENIED) { 1570 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1571 goto out; 1572 } 1573 if (dvp->v_type != VDIR) { 1574 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1575 goto out; 1576 } 1577 if (!utf8_dir_verify(&args->objname)) { 1578 *cs->statusp = resp->status = NFS4ERR_INVAL; 1579 goto out; 1580 } 1581 1582 if (rdonly4(cs->exi, cs->vp, req)) { 1583 *cs->statusp = resp->status = NFS4ERR_ROFS; 1584 goto out; 1585 } 1586 1587 /* 1588 * Name of newly created object 1589 */ 1590 nm = utf8_to_fn(&args->objname, &len, NULL); 1591 if (nm == NULL) { 1592 *cs->statusp = resp->status = NFS4ERR_INVAL; 1593 goto out; 1594 } 1595 1596 if (len > MAXNAMELEN) { 1597 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1598 kmem_free(nm, len); 1599 goto out; 1600 } 1601 1602 /* If necessary, convert to UTF-8 for poorly behaved clients */ 1603 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1604 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1605 MAXPATHLEN + 1); 1606 1607 if (name == NULL) { 1608 *cs->statusp = resp->status = NFS4ERR_INVAL; 1609 kmem_free(nm, len); 1610 goto out; 1611 } 1612 1613 resp->attrset = 0; 1614 1615 sarg.sbp = &sb; 1616 nfs4_ntov_table_init(&ntov); 1617 1618 status = do_rfs4_set_attrs(&resp->attrset, 1619 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1620 1621 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1622 status = NFS4ERR_INVAL; 1623 1624 if (status != NFS4_OK) { 1625 *cs->statusp = resp->status = status; 1626 kmem_free(nm, len); 1627 nfs4_ntov_table_free(&ntov, &sarg); 1628 resp->attrset = 0; 1629 goto out; 1630 } 1631 1632 /* Get "before" change value */ 1633 bva.va_mask = AT_CTIME|AT_SEQ; 1634 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1635 if (error) { 1636 *cs->statusp = resp->status = puterrno4(error); 1637 kmem_free(nm, len); 1638 nfs4_ntov_table_free(&ntov, &sarg); 1639 resp->attrset = 0; 1640 goto out; 1641 } 1642 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1643 1644 vap = sarg.vap; 1645 1646 /* 1647 * Set default initial values for attributes when not specified 1648 * in createattrs. 1649 */ 1650 if ((vap->va_mask & AT_UID) == 0) { 1651 vap->va_uid = crgetuid(cr); 1652 vap->va_mask |= AT_UID; 1653 } 1654 if ((vap->va_mask & AT_GID) == 0) { 1655 vap->va_gid = crgetgid(cr); 1656 vap->va_mask |= AT_GID; 1657 } 1658 1659 vap->va_mask |= AT_TYPE; 1660 switch (args->type) { 1661 case NF4DIR: 1662 vap->va_type = VDIR; 1663 if ((vap->va_mask & AT_MODE) == 0) { 1664 vap->va_mode = 0700; /* default: owner rwx only */ 1665 vap->va_mask |= AT_MODE; 1666 } 1667 error = VOP_MKDIR(dvp, nm, vap, &vp, cr, NULL, 0, NULL); 1668 if (error) 1669 break; 1670 1671 /* 1672 * Get the initial "after" sequence number, if it fails, 1673 * set to zero 1674 */ 1675 iva.va_mask = AT_SEQ; 1676 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1677 iva.va_seq = 0; 1678 break; 1679 case NF4LNK: 1680 vap->va_type = VLNK; 1681 if ((vap->va_mask & AT_MODE) == 0) { 1682 vap->va_mode = 0700; /* default: owner rwx only */ 1683 vap->va_mask |= AT_MODE; 1684 } 1685 1686 /* 1687 * symlink names must be treated as data 1688 */ 1689 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1690 1691 if (lnm == NULL) { 1692 *cs->statusp = resp->status = NFS4ERR_INVAL; 1693 if (name != nm) 1694 kmem_free(name, MAXPATHLEN + 1); 1695 kmem_free(nm, len); 1696 nfs4_ntov_table_free(&ntov, &sarg); 1697 resp->attrset = 0; 1698 goto out; 1699 } 1700 1701 if (llen > MAXPATHLEN) { 1702 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1703 if (name != nm) 1704 kmem_free(name, MAXPATHLEN + 1); 1705 kmem_free(nm, len); 1706 kmem_free(lnm, llen); 1707 nfs4_ntov_table_free(&ntov, &sarg); 1708 resp->attrset = 0; 1709 goto out; 1710 } 1711 1712 lname = nfscmd_convname(ca, cs->exi, lnm, 1713 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1714 1715 if (lname == NULL) { 1716 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1717 if (name != nm) 1718 kmem_free(name, MAXPATHLEN + 1); 1719 kmem_free(nm, len); 1720 kmem_free(lnm, llen); 1721 nfs4_ntov_table_free(&ntov, &sarg); 1722 resp->attrset = 0; 1723 goto out; 1724 } 1725 1726 error = VOP_SYMLINK(dvp, nm, vap, lnm, cr, NULL, 0); 1727 if (lname != lnm) 1728 kmem_free(lname, MAXPATHLEN + 1); 1729 if (lnm != NULL) 1730 kmem_free(lnm, llen); 1731 if (error) 1732 break; 1733 1734 /* 1735 * Get the initial "after" sequence number, if it fails, 1736 * set to zero 1737 */ 1738 iva.va_mask = AT_SEQ; 1739 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1740 iva.va_seq = 0; 1741 1742 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, 1743 NULL, NULL, NULL); 1744 if (error) 1745 break; 1746 1747 /* 1748 * va_seq is not safe over VOP calls, check it again 1749 * if it has changed zero out iva to force atomic = FALSE. 1750 */ 1751 iva2.va_mask = AT_SEQ; 1752 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1753 iva2.va_seq != iva.va_seq) 1754 iva.va_seq = 0; 1755 break; 1756 default: 1757 /* 1758 * probably a special file. 1759 */ 1760 if ((vap->va_mask & AT_MODE) == 0) { 1761 vap->va_mode = 0600; /* default: owner rw only */ 1762 vap->va_mask |= AT_MODE; 1763 } 1764 syncval = FNODSYNC; 1765 /* 1766 * We know this will only generate one VOP call 1767 */ 1768 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, nm); 1769 1770 if (vp == NULL) { 1771 if (name != nm) 1772 kmem_free(name, MAXPATHLEN + 1); 1773 kmem_free(nm, len); 1774 nfs4_ntov_table_free(&ntov, &sarg); 1775 resp->attrset = 0; 1776 goto out; 1777 } 1778 1779 /* 1780 * Get the initial "after" sequence number, if it fails, 1781 * set to zero 1782 */ 1783 iva.va_mask = AT_SEQ; 1784 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1785 iva.va_seq = 0; 1786 1787 break; 1788 } 1789 if (name != nm) 1790 kmem_free(name, MAXPATHLEN + 1); 1791 kmem_free(nm, len); 1792 1793 if (error) { 1794 *cs->statusp = resp->status = puterrno4(error); 1795 } 1796 1797 /* 1798 * Force modified data and metadata out to stable storage. 1799 */ 1800 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1801 1802 if (resp->status != NFS4_OK) { 1803 if (vp != NULL) 1804 VN_RELE(vp); 1805 nfs4_ntov_table_free(&ntov, &sarg); 1806 resp->attrset = 0; 1807 goto out; 1808 } 1809 1810 /* 1811 * Finish setup of cinfo response, "before" value already set. 1812 * Get "after" change value, if it fails, simply return the 1813 * before value. 1814 */ 1815 ava.va_mask = AT_CTIME|AT_SEQ; 1816 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1817 ava.va_ctime = bva.va_ctime; 1818 ava.va_seq = 0; 1819 } 1820 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1821 1822 /* 1823 * True verification that object was created with correct 1824 * attrs is impossible. The attrs could have been changed 1825 * immediately after object creation. If attributes did 1826 * not verify, the only recourse for the server is to 1827 * destroy the object. Maybe if some attrs (like gid) 1828 * are set incorrectly, the object should be destroyed; 1829 * however, seems bad as a default policy. Do we really 1830 * want to destroy an object over one of the times not 1831 * verifying correctly? For these reasons, the server 1832 * currently sets bits in attrset for createattrs 1833 * that were set; however, no verification is done. 1834 * 1835 * vmask_to_nmask accounts for vattr bits set on create 1836 * [do_rfs4_set_attrs() only sets resp bits for 1837 * non-vattr/vfs bits.] 1838 * Mask off any bits set by default so as not to return 1839 * more attrset bits than were requested in createattrs 1840 */ 1841 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1842 resp->attrset &= args->createattrs.attrmask; 1843 nfs4_ntov_table_free(&ntov, &sarg); 1844 1845 error = makefh4(&cs->fh, vp, cs->exi); 1846 if (error) { 1847 *cs->statusp = resp->status = puterrno4(error); 1848 } 1849 1850 /* 1851 * The cinfo.atomic = TRUE only if we got no errors, we have 1852 * non-zero va_seq's, and it has incremented by exactly one 1853 * during the creation and it didn't change during the VOP_LOOKUP 1854 * or VOP_FSYNC. 1855 */ 1856 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1857 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1858 resp->cinfo.atomic = TRUE; 1859 else 1860 resp->cinfo.atomic = FALSE; 1861 1862 /* 1863 * Force modified metadata out to stable storage. 1864 * 1865 * if a underlying vp exists, pass it to VOP_FSYNC 1866 */ 1867 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1868 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1869 else 1870 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1871 1872 if (resp->status != NFS4_OK) { 1873 VN_RELE(vp); 1874 goto out; 1875 } 1876 if (cs->vp) 1877 VN_RELE(cs->vp); 1878 1879 cs->vp = vp; 1880 *cs->statusp = resp->status = NFS4_OK; 1881 out: 1882 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1883 CREATE4res *, resp); 1884 } 1885 1886 /*ARGSUSED*/ 1887 static void 1888 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1889 struct compound_state *cs) 1890 { 1891 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1892 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1893 1894 rfs4_op_inval(argop, resop, req, cs); 1895 1896 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1897 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1898 } 1899 1900 /*ARGSUSED*/ 1901 static void 1902 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1903 struct compound_state *cs) 1904 { 1905 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1906 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1907 rfs4_deleg_state_t *dsp; 1908 nfsstat4 status; 1909 1910 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1911 DELEGRETURN4args *, args); 1912 1913 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1914 resp->status = *cs->statusp = status; 1915 if (status != NFS4_OK) 1916 goto out; 1917 1918 /* Ensure specified filehandle matches */ 1919 if (cs->vp != dsp->finfo->vp) { 1920 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1921 } else 1922 rfs4_return_deleg(dsp, FALSE); 1923 1924 rfs4_update_lease(dsp->client); 1925 1926 rfs4_deleg_state_rele(dsp); 1927 out: 1928 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1929 DELEGRETURN4res *, resp); 1930 } 1931 1932 /* 1933 * Check to see if a given "flavor" is an explicitly shared flavor. 1934 * The assumption of this routine is the "flavor" is already a valid 1935 * flavor in the secinfo list of "exi". 1936 * 1937 * e.g. 1938 * # share -o sec=flavor1 /export 1939 * # share -o sec=flavor2 /export/home 1940 * 1941 * flavor2 is not an explicitly shared flavor for /export, 1942 * however it is in the secinfo list for /export thru the 1943 * server namespace setup. 1944 */ 1945 int 1946 is_exported_sec(int flavor, struct exportinfo *exi) 1947 { 1948 int i; 1949 struct secinfo *sp; 1950 1951 sp = exi->exi_export.ex_secinfo; 1952 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1953 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1954 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1955 return (SEC_REF_EXPORTED(&sp[i])); 1956 } 1957 } 1958 1959 /* Should not reach this point based on the assumption */ 1960 return (0); 1961 } 1962 1963 /* 1964 * Check if the security flavor used in the request matches what is 1965 * required at the export point or at the root pseudo node (exi_root). 1966 * 1967 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1968 * 1969 */ 1970 static int 1971 secinfo_match_or_authnone(struct compound_state *cs) 1972 { 1973 int i; 1974 struct secinfo *sp; 1975 1976 /* 1977 * Check cs->nfsflavor (from the request) against 1978 * the current export data in cs->exi. 1979 */ 1980 sp = cs->exi->exi_export.ex_secinfo; 1981 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1982 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1983 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1984 return (1); 1985 } 1986 1987 return (0); 1988 } 1989 1990 /* 1991 * Check the access authority for the client and return the correct error. 1992 */ 1993 nfsstat4 1994 call_checkauth4(struct compound_state *cs, struct svc_req *req) 1995 { 1996 int authres; 1997 1998 /* 1999 * First, check if the security flavor used in the request 2000 * are among the flavors set in the server namespace. 2001 */ 2002 if (!secinfo_match_or_authnone(cs)) { 2003 *cs->statusp = NFS4ERR_WRONGSEC; 2004 return (*cs->statusp); 2005 } 2006 2007 authres = checkauth4(cs, req); 2008 2009 if (authres > 0) { 2010 *cs->statusp = NFS4_OK; 2011 if (! (cs->access & CS_ACCESS_LIMITED)) 2012 cs->access = CS_ACCESS_OK; 2013 } else if (authres == 0) { 2014 *cs->statusp = NFS4ERR_ACCESS; 2015 } else if (authres == -2) { 2016 *cs->statusp = NFS4ERR_WRONGSEC; 2017 } else { 2018 *cs->statusp = NFS4ERR_DELAY; 2019 } 2020 return (*cs->statusp); 2021 } 2022 2023 /* 2024 * bitmap4_to_attrmask is called by getattr and readdir. 2025 * It sets up the vattr mask and determines whether vfsstat call is needed 2026 * based on the input bitmap. 2027 * Returns nfsv4 status. 2028 */ 2029 static nfsstat4 2030 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2031 { 2032 int i; 2033 uint_t va_mask; 2034 struct statvfs64 *sbp = sargp->sbp; 2035 2036 sargp->sbp = NULL; 2037 sargp->flag = 0; 2038 sargp->rdattr_error = NFS4_OK; 2039 sargp->mntdfid_set = FALSE; 2040 if (sargp->cs->vp) 2041 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2042 FH4_ATTRDIR | FH4_NAMEDATTR); 2043 else 2044 sargp->xattr = 0; 2045 2046 /* 2047 * Set rdattr_error_req to true if return error per 2048 * failed entry rather than fail the readdir. 2049 */ 2050 if (breq & FATTR4_RDATTR_ERROR_MASK) 2051 sargp->rdattr_error_req = 1; 2052 else 2053 sargp->rdattr_error_req = 0; 2054 2055 /* 2056 * generate the va_mask 2057 * Handle the easy cases first 2058 */ 2059 switch (breq) { 2060 case NFS4_NTOV_ATTR_MASK: 2061 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2062 return (NFS4_OK); 2063 2064 case NFS4_FS_ATTR_MASK: 2065 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2066 sargp->sbp = sbp; 2067 return (NFS4_OK); 2068 2069 case NFS4_NTOV_ATTR_CACHE_MASK: 2070 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2071 return (NFS4_OK); 2072 2073 case FATTR4_LEASE_TIME_MASK: 2074 sargp->vap->va_mask = 0; 2075 return (NFS4_OK); 2076 2077 default: 2078 va_mask = 0; 2079 for (i = 0; i < nfs4_ntov_map_size; i++) { 2080 if ((breq & nfs4_ntov_map[i].fbit) && 2081 nfs4_ntov_map[i].vbit) 2082 va_mask |= nfs4_ntov_map[i].vbit; 2083 } 2084 2085 /* 2086 * Check is vfsstat is needed 2087 */ 2088 if (breq & NFS4_FS_ATTR_MASK) 2089 sargp->sbp = sbp; 2090 2091 sargp->vap->va_mask = va_mask; 2092 return (NFS4_OK); 2093 } 2094 /* NOTREACHED */ 2095 } 2096 2097 /* 2098 * bitmap4_get_sysattrs is called by getattr and readdir. 2099 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2100 * Returns nfsv4 status. 2101 */ 2102 static nfsstat4 2103 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2104 { 2105 int error; 2106 struct compound_state *cs = sargp->cs; 2107 vnode_t *vp = cs->vp; 2108 2109 if (sargp->sbp != NULL) { 2110 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2111 sargp->sbp = NULL; /* to identify error */ 2112 return (puterrno4(error)); 2113 } 2114 } 2115 2116 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2117 } 2118 2119 static void 2120 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2121 { 2122 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2123 KM_SLEEP); 2124 ntovp->attrcnt = 0; 2125 ntovp->vfsstat = FALSE; 2126 } 2127 2128 static void 2129 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2130 struct nfs4_svgetit_arg *sargp) 2131 { 2132 int i; 2133 union nfs4_attr_u *na; 2134 uint8_t *amap; 2135 2136 /* 2137 * XXX Should do the same checks for whether the bit is set 2138 */ 2139 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2140 i < ntovp->attrcnt; i++, na++, amap++) { 2141 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2142 NFS4ATTR_FREEIT, sargp, na); 2143 } 2144 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2145 /* 2146 * xdr_free for getattr will be done later 2147 */ 2148 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2149 i < ntovp->attrcnt; i++, na++, amap++) { 2150 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2151 } 2152 } 2153 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2154 } 2155 2156 /* 2157 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2158 */ 2159 static nfsstat4 2160 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2161 struct nfs4_svgetit_arg *sargp) 2162 { 2163 int error = 0; 2164 int i, k; 2165 struct nfs4_ntov_table ntov; 2166 XDR xdr; 2167 ulong_t xdr_size; 2168 char *xdr_attrs; 2169 nfsstat4 status = NFS4_OK; 2170 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2171 union nfs4_attr_u *na; 2172 uint8_t *amap; 2173 2174 sargp->op = NFS4ATTR_GETIT; 2175 sargp->flag = 0; 2176 2177 fattrp->attrmask = 0; 2178 /* if no bits requested, then return empty fattr4 */ 2179 if (breq == 0) { 2180 fattrp->attrlist4_len = 0; 2181 fattrp->attrlist4 = NULL; 2182 return (NFS4_OK); 2183 } 2184 2185 /* 2186 * return NFS4ERR_INVAL when client requests write-only attrs 2187 */ 2188 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2189 return (NFS4ERR_INVAL); 2190 2191 nfs4_ntov_table_init(&ntov); 2192 na = ntov.na; 2193 amap = ntov.amap; 2194 2195 /* 2196 * Now loop to get or verify the attrs 2197 */ 2198 for (i = 0; i < nfs4_ntov_map_size; i++) { 2199 if (breq & nfs4_ntov_map[i].fbit) { 2200 if ((*nfs4_ntov_map[i].sv_getit)( 2201 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2202 2203 error = (*nfs4_ntov_map[i].sv_getit)( 2204 NFS4ATTR_GETIT, sargp, na); 2205 2206 /* 2207 * Possible error values: 2208 * >0 if sv_getit failed to 2209 * get the attr; 0 if succeeded; 2210 * <0 if rdattr_error and the 2211 * attribute cannot be returned. 2212 */ 2213 if (error && !(sargp->rdattr_error_req)) 2214 goto done; 2215 /* 2216 * If error then just for entry 2217 */ 2218 if (error == 0) { 2219 fattrp->attrmask |= 2220 nfs4_ntov_map[i].fbit; 2221 *amap++ = 2222 (uint8_t)nfs4_ntov_map[i].nval; 2223 na++; 2224 (ntov.attrcnt)++; 2225 } else if ((error > 0) && 2226 (sargp->rdattr_error == NFS4_OK)) { 2227 sargp->rdattr_error = puterrno4(error); 2228 } 2229 error = 0; 2230 } 2231 } 2232 } 2233 2234 /* 2235 * If rdattr_error was set after the return value for it was assigned, 2236 * update it. 2237 */ 2238 if (prev_rdattr_error != sargp->rdattr_error) { 2239 na = ntov.na; 2240 amap = ntov.amap; 2241 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2242 k = *amap; 2243 if (k < FATTR4_RDATTR_ERROR) { 2244 continue; 2245 } 2246 if ((k == FATTR4_RDATTR_ERROR) && 2247 ((*nfs4_ntov_map[k].sv_getit)( 2248 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2249 2250 (void) (*nfs4_ntov_map[k].sv_getit)( 2251 NFS4ATTR_GETIT, sargp, na); 2252 } 2253 break; 2254 } 2255 } 2256 2257 xdr_size = 0; 2258 na = ntov.na; 2259 amap = ntov.amap; 2260 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2261 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2262 } 2263 2264 fattrp->attrlist4_len = xdr_size; 2265 if (xdr_size) { 2266 /* freed by rfs4_op_getattr_free() */ 2267 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2268 2269 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2270 2271 na = ntov.na; 2272 amap = ntov.amap; 2273 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2274 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2275 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2276 int, *amap); 2277 status = NFS4ERR_SERVERFAULT; 2278 break; 2279 } 2280 } 2281 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2282 } else { 2283 fattrp->attrlist4 = NULL; 2284 } 2285 done: 2286 2287 nfs4_ntov_table_free(&ntov, sargp); 2288 2289 if (error != 0) 2290 status = puterrno4(error); 2291 2292 return (status); 2293 } 2294 2295 /* ARGSUSED */ 2296 static void 2297 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2298 struct compound_state *cs) 2299 { 2300 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2301 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2302 struct nfs4_svgetit_arg sarg; 2303 struct statvfs64 sb; 2304 nfsstat4 status; 2305 2306 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2307 GETATTR4args *, args); 2308 2309 if (cs->vp == NULL) { 2310 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2311 goto out; 2312 } 2313 2314 if (cs->access == CS_ACCESS_DENIED) { 2315 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2316 goto out; 2317 } 2318 2319 sarg.sbp = &sb; 2320 sarg.cs = cs; 2321 2322 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2323 if (status == NFS4_OK) { 2324 status = bitmap4_get_sysattrs(&sarg); 2325 if (status == NFS4_OK) 2326 status = do_rfs4_op_getattr(args->attr_request, 2327 &resp->obj_attributes, &sarg); 2328 } 2329 *cs->statusp = resp->status = status; 2330 out: 2331 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2332 GETATTR4res *, resp); 2333 } 2334 2335 static void 2336 rfs4_op_getattr_free(nfs_resop4 *resop) 2337 { 2338 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2339 2340 nfs4_fattr4_free(&resp->obj_attributes); 2341 } 2342 2343 /* ARGSUSED */ 2344 static void 2345 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2346 struct compound_state *cs) 2347 { 2348 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2349 2350 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2351 2352 if (cs->vp == NULL) { 2353 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2354 goto out; 2355 } 2356 if (cs->access == CS_ACCESS_DENIED) { 2357 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2358 goto out; 2359 } 2360 2361 resp->object.nfs_fh4_val = 2362 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2363 nfs_fh4_copy(&cs->fh, &resp->object); 2364 *cs->statusp = resp->status = NFS4_OK; 2365 out: 2366 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2367 GETFH4res *, resp); 2368 } 2369 2370 static void 2371 rfs4_op_getfh_free(nfs_resop4 *resop) 2372 { 2373 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2374 2375 if (resp->status == NFS4_OK && 2376 resp->object.nfs_fh4_val != NULL) { 2377 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2378 resp->object.nfs_fh4_val = NULL; 2379 resp->object.nfs_fh4_len = 0; 2380 } 2381 } 2382 2383 /* 2384 * illegal: args: void 2385 * res : status (NFS4ERR_OP_ILLEGAL) 2386 */ 2387 /* ARGSUSED */ 2388 static void 2389 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2390 struct svc_req *req, struct compound_state *cs) 2391 { 2392 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2393 2394 resop->resop = OP_ILLEGAL; 2395 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2396 } 2397 2398 /* 2399 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2400 * res: status. If success - CURRENT_FH unchanged, return change_info 2401 */ 2402 /* ARGSUSED */ 2403 static void 2404 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2405 struct compound_state *cs) 2406 { 2407 LINK4args *args = &argop->nfs_argop4_u.oplink; 2408 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2409 int error; 2410 vnode_t *vp; 2411 vnode_t *dvp; 2412 struct vattr bdva, idva, adva; 2413 char *nm; 2414 uint_t len; 2415 struct sockaddr *ca; 2416 char *name = NULL; 2417 2418 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2419 LINK4args *, args); 2420 2421 /* SAVED_FH: source object */ 2422 vp = cs->saved_vp; 2423 if (vp == NULL) { 2424 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2425 goto out; 2426 } 2427 2428 /* CURRENT_FH: target directory */ 2429 dvp = cs->vp; 2430 if (dvp == NULL) { 2431 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2432 goto out; 2433 } 2434 2435 /* 2436 * If there is a non-shared filesystem mounted on this vnode, 2437 * do not allow to link any file in this directory. 2438 */ 2439 if (vn_ismntpt(dvp)) { 2440 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2441 goto out; 2442 } 2443 2444 if (cs->access == CS_ACCESS_DENIED) { 2445 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2446 goto out; 2447 } 2448 2449 /* Check source object's type validity */ 2450 if (vp->v_type == VDIR) { 2451 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2452 goto out; 2453 } 2454 2455 /* Check target directory's type */ 2456 if (dvp->v_type != VDIR) { 2457 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2458 goto out; 2459 } 2460 2461 if (cs->saved_exi != cs->exi) { 2462 *cs->statusp = resp->status = NFS4ERR_XDEV; 2463 goto out; 2464 } 2465 2466 if (!utf8_dir_verify(&args->newname)) { 2467 *cs->statusp = resp->status = NFS4ERR_INVAL; 2468 goto out; 2469 } 2470 2471 nm = utf8_to_fn(&args->newname, &len, NULL); 2472 if (nm == NULL) { 2473 *cs->statusp = resp->status = NFS4ERR_INVAL; 2474 goto out; 2475 } 2476 2477 if (len > MAXNAMELEN) { 2478 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2479 kmem_free(nm, len); 2480 goto out; 2481 } 2482 2483 if (rdonly4(cs->exi, cs->vp, req)) { 2484 *cs->statusp = resp->status = NFS4ERR_ROFS; 2485 kmem_free(nm, len); 2486 goto out; 2487 } 2488 2489 /* Get "before" change value */ 2490 bdva.va_mask = AT_CTIME|AT_SEQ; 2491 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2492 if (error) { 2493 *cs->statusp = resp->status = puterrno4(error); 2494 kmem_free(nm, len); 2495 goto out; 2496 } 2497 2498 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2499 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2500 MAXPATHLEN + 1); 2501 2502 if (name == NULL) { 2503 *cs->statusp = resp->status = NFS4ERR_INVAL; 2504 kmem_free(nm, len); 2505 goto out; 2506 } 2507 2508 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2509 2510 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2511 2512 if (nm != name) 2513 kmem_free(name, MAXPATHLEN + 1); 2514 kmem_free(nm, len); 2515 2516 /* 2517 * Get the initial "after" sequence number, if it fails, set to zero 2518 */ 2519 idva.va_mask = AT_SEQ; 2520 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2521 idva.va_seq = 0; 2522 2523 /* 2524 * Force modified data and metadata out to stable storage. 2525 */ 2526 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2527 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2528 2529 if (error) { 2530 *cs->statusp = resp->status = puterrno4(error); 2531 goto out; 2532 } 2533 2534 /* 2535 * Get "after" change value, if it fails, simply return the 2536 * before value. 2537 */ 2538 adva.va_mask = AT_CTIME|AT_SEQ; 2539 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2540 adva.va_ctime = bdva.va_ctime; 2541 adva.va_seq = 0; 2542 } 2543 2544 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2545 2546 /* 2547 * The cinfo.atomic = TRUE only if we have 2548 * non-zero va_seq's, and it has incremented by exactly one 2549 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2550 */ 2551 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2552 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2553 resp->cinfo.atomic = TRUE; 2554 else 2555 resp->cinfo.atomic = FALSE; 2556 2557 *cs->statusp = resp->status = NFS4_OK; 2558 out: 2559 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2560 LINK4res *, resp); 2561 } 2562 2563 /* 2564 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2565 */ 2566 2567 /* ARGSUSED */ 2568 static nfsstat4 2569 do_rfs4_op_lookup(char *nm, uint_t buflen, struct svc_req *req, 2570 struct compound_state *cs) 2571 { 2572 int error; 2573 int different_export = 0; 2574 vnode_t *vp, *tvp, *pre_tvp = NULL, *oldvp = NULL; 2575 struct exportinfo *exi = NULL, *pre_exi = NULL; 2576 nfsstat4 stat; 2577 fid_t fid; 2578 int attrdir, dotdot, walk; 2579 bool_t is_newvp = FALSE; 2580 2581 if (cs->vp->v_flag & V_XATTRDIR) { 2582 attrdir = 1; 2583 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2584 } else { 2585 attrdir = 0; 2586 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2587 } 2588 2589 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2590 2591 /* 2592 * If dotdotting, then need to check whether it's 2593 * above the root of a filesystem, or above an 2594 * export point. 2595 */ 2596 if (dotdot) { 2597 2598 /* 2599 * If dotdotting at the root of a filesystem, then 2600 * need to traverse back to the mounted-on filesystem 2601 * and do the dotdot lookup there. 2602 */ 2603 if (cs->vp->v_flag & VROOT) { 2604 2605 /* 2606 * If at the system root, then can 2607 * go up no further. 2608 */ 2609 if (VN_CMP(cs->vp, rootdir)) 2610 return (puterrno4(ENOENT)); 2611 2612 /* 2613 * Traverse back to the mounted-on filesystem 2614 */ 2615 cs->vp = untraverse(cs->vp); 2616 2617 /* 2618 * Set the different_export flag so we remember 2619 * to pick up a new exportinfo entry for 2620 * this new filesystem. 2621 */ 2622 different_export = 1; 2623 } else { 2624 2625 /* 2626 * If dotdotting above an export point then set 2627 * the different_export to get new export info. 2628 */ 2629 different_export = nfs_exported(cs->exi, cs->vp); 2630 } 2631 } 2632 2633 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2634 NULL, NULL, NULL); 2635 if (error) 2636 return (puterrno4(error)); 2637 2638 /* 2639 * If the vnode is in a pseudo filesystem, check whether it is visible. 2640 * 2641 * XXX if the vnode is a symlink and it is not visible in 2642 * a pseudo filesystem, return ENOENT (not following symlink). 2643 * V4 client can not mount such symlink. This is a regression 2644 * from V2/V3. 2645 * 2646 * In the same exported filesystem, if the security flavor used 2647 * is not an explicitly shared flavor, limit the view to the visible 2648 * list entries only. This is not a WRONGSEC case because it's already 2649 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2650 */ 2651 if (!different_export && 2652 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2653 cs->access & CS_ACCESS_LIMITED)) { 2654 if (! nfs_visible(cs->exi, vp, &different_export)) { 2655 VN_RELE(vp); 2656 return (puterrno4(ENOENT)); 2657 } 2658 } 2659 2660 /* 2661 * If it's a mountpoint, then traverse it. 2662 */ 2663 if (vn_ismntpt(vp)) { 2664 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2665 pre_tvp = vp; /* save pre-traversed vnode */ 2666 2667 /* 2668 * hold pre_tvp to counteract rele by traverse. We will 2669 * need pre_tvp below if checkexport4 fails 2670 */ 2671 VN_HOLD(pre_tvp); 2672 tvp = vp; 2673 if ((error = traverse(&tvp)) != 0) { 2674 VN_RELE(vp); 2675 VN_RELE(pre_tvp); 2676 return (puterrno4(error)); 2677 } 2678 vp = tvp; 2679 different_export = 1; 2680 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2681 /* 2682 * The vfsp comparison is to handle the case where 2683 * a LOFS mount is shared. lo_lookup traverses mount points, 2684 * and NFS is unaware of local fs transistions because 2685 * v_vfsmountedhere isn't set. For this special LOFS case, 2686 * the dir and the obj returned by lookup will have different 2687 * vfs ptrs. 2688 */ 2689 different_export = 1; 2690 } 2691 2692 if (different_export) { 2693 2694 bzero(&fid, sizeof (fid)); 2695 fid.fid_len = MAXFIDSZ; 2696 error = vop_fid_pseudo(vp, &fid); 2697 if (error) { 2698 VN_RELE(vp); 2699 if (pre_tvp) 2700 VN_RELE(pre_tvp); 2701 return (puterrno4(error)); 2702 } 2703 2704 if (dotdot) 2705 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2706 else 2707 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2708 2709 if (exi == NULL) { 2710 if (pre_tvp) { 2711 /* 2712 * If this vnode is a mounted-on vnode, 2713 * but the mounted-on file system is not 2714 * exported, send back the filehandle for 2715 * the mounted-on vnode, not the root of 2716 * the mounted-on file system. 2717 */ 2718 VN_RELE(vp); 2719 vp = pre_tvp; 2720 exi = pre_exi; 2721 } else { 2722 VN_RELE(vp); 2723 return (puterrno4(EACCES)); 2724 } 2725 } else if (pre_tvp) { 2726 /* we're done with pre_tvp now. release extra hold */ 2727 VN_RELE(pre_tvp); 2728 } 2729 2730 cs->exi = exi; 2731 2732 /* 2733 * Now we do a checkauth4. The reason is that 2734 * this client/user may not have access to the new 2735 * exported file system, and if he does, 2736 * the client/user may be mapped to a different uid. 2737 * 2738 * We start with a new cr, because the checkauth4 done 2739 * in the PUT*FH operation over wrote the cred's uid, 2740 * gid, etc, and we want the real thing before calling 2741 * checkauth4() 2742 */ 2743 crfree(cs->cr); 2744 cs->cr = crdup(cs->basecr); 2745 2746 if (cs->vp) 2747 oldvp = cs->vp; 2748 cs->vp = vp; 2749 is_newvp = TRUE; 2750 2751 stat = call_checkauth4(cs, req); 2752 if (stat != NFS4_OK) { 2753 VN_RELE(cs->vp); 2754 cs->vp = oldvp; 2755 return (stat); 2756 } 2757 } 2758 2759 /* 2760 * After various NFS checks, do a label check on the path 2761 * component. The label on this path should either be the 2762 * global zone's label or a zone's label. We are only 2763 * interested in the zone's label because exported files 2764 * in global zone is accessible (though read-only) to 2765 * clients. The exportability/visibility check is already 2766 * done before reaching this code. 2767 */ 2768 if (is_system_labeled()) { 2769 bslabel_t *clabel; 2770 2771 ASSERT(req->rq_label != NULL); 2772 clabel = req->rq_label; 2773 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2774 "got client label from request(1)", struct svc_req *, req); 2775 2776 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2777 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 2778 error = EACCES; 2779 goto err_out; 2780 } 2781 } else { 2782 /* 2783 * We grant access to admin_low label clients 2784 * only if the client is trusted, i.e. also 2785 * running Solaris Trusted Extension. 2786 */ 2787 struct sockaddr *ca; 2788 int addr_type; 2789 void *ipaddr; 2790 tsol_tpc_t *tp; 2791 2792 ca = (struct sockaddr *)svc_getrpccaller( 2793 req->rq_xprt)->buf; 2794 if (ca->sa_family == AF_INET) { 2795 addr_type = IPV4_VERSION; 2796 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2797 } else if (ca->sa_family == AF_INET6) { 2798 addr_type = IPV6_VERSION; 2799 ipaddr = &((struct sockaddr_in6 *) 2800 ca)->sin6_addr; 2801 } 2802 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2803 if (tp == NULL || tp->tpc_tp.tp_doi != 2804 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2805 SUN_CIPSO) { 2806 if (tp != NULL) 2807 TPC_RELE(tp); 2808 error = EACCES; 2809 goto err_out; 2810 } 2811 TPC_RELE(tp); 2812 } 2813 } 2814 2815 error = makefh4(&cs->fh, vp, cs->exi); 2816 2817 err_out: 2818 if (error) { 2819 if (is_newvp) { 2820 VN_RELE(cs->vp); 2821 cs->vp = oldvp; 2822 } else 2823 VN_RELE(vp); 2824 return (puterrno4(error)); 2825 } 2826 2827 if (!is_newvp) { 2828 if (cs->vp) 2829 VN_RELE(cs->vp); 2830 cs->vp = vp; 2831 } else if (oldvp) 2832 VN_RELE(oldvp); 2833 2834 /* 2835 * if did lookup on attrdir and didn't lookup .., set named 2836 * attr fh flag 2837 */ 2838 if (attrdir && ! dotdot) 2839 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2840 2841 /* Assume false for now, open proc will set this */ 2842 cs->mandlock = FALSE; 2843 2844 return (NFS4_OK); 2845 } 2846 2847 /* ARGSUSED */ 2848 static void 2849 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2850 struct compound_state *cs) 2851 { 2852 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2853 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2854 char *nm; 2855 uint_t len; 2856 struct sockaddr *ca; 2857 char *name = NULL; 2858 2859 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2860 LOOKUP4args *, args); 2861 2862 if (cs->vp == NULL) { 2863 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2864 goto out; 2865 } 2866 2867 if (cs->vp->v_type == VLNK) { 2868 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2869 goto out; 2870 } 2871 2872 if (cs->vp->v_type != VDIR) { 2873 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2874 goto out; 2875 } 2876 2877 if (!utf8_dir_verify(&args->objname)) { 2878 *cs->statusp = resp->status = NFS4ERR_INVAL; 2879 goto out; 2880 } 2881 2882 nm = utf8_to_str(&args->objname, &len, NULL); 2883 if (nm == NULL) { 2884 *cs->statusp = resp->status = NFS4ERR_INVAL; 2885 goto out; 2886 } 2887 2888 if (len > MAXNAMELEN) { 2889 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2890 kmem_free(nm, len); 2891 goto out; 2892 } 2893 2894 /* If necessary, convert to UTF-8 for illbehaved clients */ 2895 2896 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2897 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2898 MAXPATHLEN + 1); 2899 2900 if (name == NULL) { 2901 *cs->statusp = resp->status = NFS4ERR_INVAL; 2902 kmem_free(nm, len); 2903 goto out; 2904 } 2905 2906 *cs->statusp = resp->status = do_rfs4_op_lookup(name, len, req, cs); 2907 2908 if (name != nm) 2909 kmem_free(name, MAXPATHLEN + 1); 2910 kmem_free(nm, len); 2911 2912 out: 2913 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2914 LOOKUP4res *, resp); 2915 } 2916 2917 /* ARGSUSED */ 2918 static void 2919 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2920 struct compound_state *cs) 2921 { 2922 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2923 2924 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2925 2926 if (cs->vp == NULL) { 2927 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2928 goto out; 2929 } 2930 2931 if (cs->vp->v_type != VDIR) { 2932 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2933 goto out; 2934 } 2935 2936 *cs->statusp = resp->status = do_rfs4_op_lookup("..", 3, req, cs); 2937 2938 /* 2939 * From NFSV4 Specification, LOOKUPP should not check for 2940 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2941 */ 2942 if (resp->status == NFS4ERR_WRONGSEC) { 2943 *cs->statusp = resp->status = NFS4_OK; 2944 } 2945 2946 out: 2947 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2948 LOOKUPP4res *, resp); 2949 } 2950 2951 2952 /*ARGSUSED2*/ 2953 static void 2954 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2955 struct compound_state *cs) 2956 { 2957 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2958 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2959 vnode_t *avp = NULL; 2960 int lookup_flags = LOOKUP_XATTR, error; 2961 int exp_ro = 0; 2962 2963 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 2964 OPENATTR4args *, args); 2965 2966 if (cs->vp == NULL) { 2967 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2968 goto out; 2969 } 2970 2971 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 2972 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 2973 *cs->statusp = resp->status = puterrno4(ENOTSUP); 2974 goto out; 2975 } 2976 2977 /* 2978 * If file system supports passing ACE mask to VOP_ACCESS then 2979 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 2980 */ 2981 2982 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 2983 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 2984 V_ACE_MASK, cs->cr, NULL); 2985 else 2986 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 2987 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 2988 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 2989 2990 if (error) { 2991 *cs->statusp = resp->status = puterrno4(EACCES); 2992 goto out; 2993 } 2994 2995 /* 2996 * The CREATE_XATTR_DIR VOP flag cannot be specified if 2997 * the file system is exported read-only -- regardless of 2998 * createdir flag. Otherwise the attrdir would be created 2999 * (assuming server fs isn't mounted readonly locally). If 3000 * VOP_LOOKUP returns ENOENT in this case, the error will 3001 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3002 * because specfs has no VOP_LOOKUP op, so the macro would 3003 * return ENOSYS. EINVAL is returned by all (current) 3004 * Solaris file system implementations when any of their 3005 * restrictions are violated (xattr(dir) can't have xattrdir). 3006 * Returning NOTSUPP is more appropriate in this case 3007 * because the object will never be able to have an attrdir. 3008 */ 3009 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 3010 lookup_flags |= CREATE_XATTR_DIR; 3011 3012 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3013 NULL, NULL, NULL); 3014 3015 if (error) { 3016 if (error == ENOENT && args->createdir && exp_ro) 3017 *cs->statusp = resp->status = puterrno4(EROFS); 3018 else if (error == EINVAL || error == ENOSYS) 3019 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3020 else 3021 *cs->statusp = resp->status = puterrno4(error); 3022 goto out; 3023 } 3024 3025 ASSERT(avp->v_flag & V_XATTRDIR); 3026 3027 error = makefh4(&cs->fh, avp, cs->exi); 3028 3029 if (error) { 3030 VN_RELE(avp); 3031 *cs->statusp = resp->status = puterrno4(error); 3032 goto out; 3033 } 3034 3035 VN_RELE(cs->vp); 3036 cs->vp = avp; 3037 3038 /* 3039 * There is no requirement for an attrdir fh flag 3040 * because the attrdir has a vnode flag to distinguish 3041 * it from regular (non-xattr) directories. The 3042 * FH4_ATTRDIR flag is set for future sanity checks. 3043 */ 3044 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3045 *cs->statusp = resp->status = NFS4_OK; 3046 3047 out: 3048 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3049 OPENATTR4res *, resp); 3050 } 3051 3052 static int 3053 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3054 caller_context_t *ct) 3055 { 3056 int error; 3057 int i; 3058 clock_t delaytime; 3059 3060 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3061 3062 /* 3063 * Don't block on mandatory locks. If this routine returns 3064 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3065 */ 3066 uio->uio_fmode = FNONBLOCK; 3067 3068 for (i = 0; i < rfs4_maxlock_tries; i++) { 3069 3070 3071 if (direction == FREAD) { 3072 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3073 error = VOP_READ(vp, uio, ioflag, cred, ct); 3074 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3075 } else { 3076 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3077 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3078 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3079 } 3080 3081 if (error != EAGAIN) 3082 break; 3083 3084 if (i < rfs4_maxlock_tries - 1) { 3085 delay(delaytime); 3086 delaytime *= 2; 3087 } 3088 } 3089 3090 return (error); 3091 } 3092 3093 /* ARGSUSED */ 3094 static void 3095 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3096 struct compound_state *cs) 3097 { 3098 READ4args *args = &argop->nfs_argop4_u.opread; 3099 READ4res *resp = &resop->nfs_resop4_u.opread; 3100 int error; 3101 int verror; 3102 vnode_t *vp; 3103 struct vattr va; 3104 struct iovec iov; 3105 struct uio uio; 3106 u_offset_t offset; 3107 bool_t *deleg = &cs->deleg; 3108 nfsstat4 stat; 3109 int in_crit = 0; 3110 mblk_t *mp; 3111 int alloc_err = 0; 3112 caller_context_t ct; 3113 3114 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3115 READ4args, args); 3116 3117 vp = cs->vp; 3118 if (vp == NULL) { 3119 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3120 goto out; 3121 } 3122 if (cs->access == CS_ACCESS_DENIED) { 3123 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3124 goto out; 3125 } 3126 3127 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3128 deleg, TRUE, &ct)) != NFS4_OK) { 3129 *cs->statusp = resp->status = stat; 3130 goto out; 3131 } 3132 3133 /* 3134 * Enter the critical region before calling VOP_RWLOCK 3135 * to avoid a deadlock with write requests. 3136 */ 3137 if (nbl_need_check(vp)) { 3138 nbl_start_crit(vp, RW_READER); 3139 in_crit = 1; 3140 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3141 &ct)) { 3142 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3143 goto out; 3144 } 3145 } 3146 3147 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3148 deleg, TRUE, &ct)) != NFS4_OK) { 3149 *cs->statusp = resp->status = stat; 3150 goto out; 3151 } 3152 3153 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3154 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3155 3156 /* 3157 * If we can't get the attributes, then we can't do the 3158 * right access checking. So, we'll fail the request. 3159 */ 3160 if (verror) { 3161 *cs->statusp = resp->status = puterrno4(verror); 3162 goto out; 3163 } 3164 3165 if (vp->v_type != VREG) { 3166 *cs->statusp = resp->status = 3167 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3168 goto out; 3169 } 3170 3171 if (crgetuid(cs->cr) != va.va_uid && 3172 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3173 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3174 *cs->statusp = resp->status = puterrno4(error); 3175 goto out; 3176 } 3177 3178 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3179 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3180 goto out; 3181 } 3182 3183 offset = args->offset; 3184 if (offset >= va.va_size) { 3185 *cs->statusp = resp->status = NFS4_OK; 3186 resp->eof = TRUE; 3187 resp->data_len = 0; 3188 resp->data_val = NULL; 3189 resp->mblk = NULL; 3190 /* RDMA */ 3191 resp->wlist = args->wlist; 3192 resp->wlist_len = resp->data_len; 3193 *cs->statusp = resp->status = NFS4_OK; 3194 if (resp->wlist) 3195 clist_zero_len(resp->wlist); 3196 goto out; 3197 } 3198 3199 if (args->count == 0) { 3200 *cs->statusp = resp->status = NFS4_OK; 3201 resp->eof = FALSE; 3202 resp->data_len = 0; 3203 resp->data_val = NULL; 3204 resp->mblk = NULL; 3205 /* RDMA */ 3206 resp->wlist = args->wlist; 3207 resp->wlist_len = resp->data_len; 3208 if (resp->wlist) 3209 clist_zero_len(resp->wlist); 3210 goto out; 3211 } 3212 3213 /* 3214 * Do not allocate memory more than maximum allowed 3215 * transfer size 3216 */ 3217 if (args->count > rfs4_tsize(req)) 3218 args->count = rfs4_tsize(req); 3219 3220 /* 3221 * If returning data via RDMA Write, then grab the chunk list. If we 3222 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3223 */ 3224 if (args->wlist) { 3225 mp = NULL; 3226 (void) rdma_get_wchunk(req, &iov, args->wlist); 3227 } else { 3228 /* 3229 * mp will contain the data to be sent out in the read reply. 3230 * It will be freed after the reply has been sent. Let's 3231 * roundup the data to a BYTES_PER_XDR_UNIT multiple, so that 3232 * the call to xdrmblk_putmblk() never fails. If the first 3233 * alloc of the requested size fails, then decrease the size to 3234 * something more reasonable and wait for the allocation to 3235 * occur. 3236 */ 3237 mp = allocb(RNDUP(args->count), BPRI_MED); 3238 if (mp == NULL) { 3239 if (args->count > MAXBSIZE) 3240 args->count = MAXBSIZE; 3241 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3242 STR_NOSIG, &alloc_err); 3243 } 3244 ASSERT(mp != NULL); 3245 ASSERT(alloc_err == 0); 3246 3247 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3248 iov.iov_len = args->count; 3249 } 3250 3251 uio.uio_iov = &iov; 3252 uio.uio_iovcnt = 1; 3253 uio.uio_segflg = UIO_SYSSPACE; 3254 uio.uio_extflg = UIO_COPY_CACHED; 3255 uio.uio_loffset = args->offset; 3256 uio.uio_resid = args->count; 3257 3258 error = do_io(FREAD, vp, &uio, 0, cs->cr, &ct); 3259 3260 va.va_mask = AT_SIZE; 3261 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3262 3263 if (error) { 3264 freeb(mp); 3265 *cs->statusp = resp->status = puterrno4(error); 3266 goto out; 3267 } 3268 3269 *cs->statusp = resp->status = NFS4_OK; 3270 3271 ASSERT(uio.uio_resid >= 0); 3272 resp->data_len = args->count - uio.uio_resid; 3273 if (mp) { 3274 resp->data_val = (char *)mp->b_datap->db_base; 3275 } else { 3276 resp->data_val = (caddr_t)iov.iov_base; 3277 } 3278 resp->mblk = mp; 3279 3280 if (!verror && offset + resp->data_len == va.va_size) 3281 resp->eof = TRUE; 3282 else 3283 resp->eof = FALSE; 3284 3285 if (args->wlist) { 3286 if (!rdma_setup_read_data4(args, resp)) { 3287 *cs->statusp = resp->status = NFS4ERR_INVAL; 3288 } 3289 } else { 3290 resp->wlist = NULL; 3291 } 3292 3293 out: 3294 if (in_crit) 3295 nbl_end_crit(vp); 3296 3297 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3298 READ4res *, resp); 3299 } 3300 3301 static void 3302 rfs4_op_read_free(nfs_resop4 *resop) 3303 { 3304 READ4res *resp = &resop->nfs_resop4_u.opread; 3305 3306 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3307 freeb(resp->mblk); 3308 resp->mblk = NULL; 3309 resp->data_val = NULL; 3310 resp->data_len = 0; 3311 } 3312 } 3313 3314 static void 3315 rfs4_op_readdir_free(nfs_resop4 * resop) 3316 { 3317 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3318 3319 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3320 freeb(resp->mblk); 3321 resp->mblk = NULL; 3322 resp->data_len = 0; 3323 } 3324 } 3325 3326 3327 /* ARGSUSED */ 3328 static void 3329 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3330 struct compound_state *cs) 3331 { 3332 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3333 int error; 3334 vnode_t *vp; 3335 struct exportinfo *exi, *sav_exi; 3336 nfs_fh4_fmt_t *fh_fmtp; 3337 3338 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3339 3340 if (cs->vp) { 3341 VN_RELE(cs->vp); 3342 cs->vp = NULL; 3343 } 3344 3345 if (cs->cr) 3346 crfree(cs->cr); 3347 3348 cs->cr = crdup(cs->basecr); 3349 3350 vp = exi_public->exi_vp; 3351 if (vp == NULL) { 3352 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3353 goto out; 3354 } 3355 3356 if (is_system_labeled()) { 3357 bslabel_t *clabel; 3358 3359 ASSERT(req->rq_label != NULL); 3360 clabel = req->rq_label; 3361 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3362 "got client label from request(1)", 3363 struct svc_req *, req); 3364 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3365 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 3366 *cs->statusp = resp->status = 3367 NFS4ERR_SERVERFAULT; 3368 return; 3369 } 3370 } 3371 } 3372 3373 error = makefh4(&cs->fh, vp, exi_public); 3374 if (error != 0) { 3375 *cs->statusp = resp->status = puterrno4(error); 3376 goto out; 3377 } 3378 sav_exi = cs->exi; 3379 if (exi_public == exi_root) { 3380 /* 3381 * No filesystem is actually shared public, so we default 3382 * to exi_root. In this case, we must check whether root 3383 * is exported. 3384 */ 3385 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3386 3387 /* 3388 * if root filesystem is exported, the exportinfo struct that we 3389 * should use is what checkexport4 returns, because root_exi is 3390 * actually a mostly empty struct. 3391 */ 3392 exi = checkexport4(&fh_fmtp->fh4_fsid, 3393 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3394 cs->exi = ((exi != NULL) ? exi : exi_public); 3395 } else { 3396 /* 3397 * it's a properly shared filesystem 3398 */ 3399 cs->exi = exi_public; 3400 } 3401 3402 VN_HOLD(vp); 3403 cs->vp = vp; 3404 3405 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3406 VN_RELE(cs->vp); 3407 cs->vp = NULL; 3408 cs->exi = sav_exi; 3409 goto out; 3410 } 3411 3412 *cs->statusp = resp->status = NFS4_OK; 3413 out: 3414 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3415 PUTPUBFH4res *, resp); 3416 } 3417 3418 /* 3419 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3420 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3421 * or joe have restrictive search permissions, then we shouldn't let 3422 * the client get a file handle. This is easy to enforce. However, we 3423 * don't know what security flavor should be used until we resolve the 3424 * path name. Another complication is uid mapping. If root is 3425 * the user, then it will be mapped to the anonymous user by default, 3426 * but we won't know that till we've resolved the path name. And we won't 3427 * know what the anonymous user is. 3428 * Luckily, SECINFO is specified to take a full filename. 3429 * So what we will have to in rfs4_op_lookup is check that flavor of 3430 * the target object matches that of the request, and if root was the 3431 * caller, check for the root= and anon= options, and if necessary, 3432 * repeat the lookup using the right cred_t. But that's not done yet. 3433 */ 3434 /* ARGSUSED */ 3435 static void 3436 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3437 struct compound_state *cs) 3438 { 3439 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3440 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3441 nfs_fh4_fmt_t *fh_fmtp; 3442 3443 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3444 PUTFH4args *, args); 3445 3446 if (cs->vp) { 3447 VN_RELE(cs->vp); 3448 cs->vp = NULL; 3449 } 3450 3451 if (cs->cr) { 3452 crfree(cs->cr); 3453 cs->cr = NULL; 3454 } 3455 3456 3457 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3458 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3459 goto out; 3460 } 3461 3462 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3463 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3464 NULL); 3465 3466 if (cs->exi == NULL) { 3467 *cs->statusp = resp->status = NFS4ERR_STALE; 3468 goto out; 3469 } 3470 3471 cs->cr = crdup(cs->basecr); 3472 3473 ASSERT(cs->cr != NULL); 3474 3475 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3476 *cs->statusp = resp->status; 3477 goto out; 3478 } 3479 3480 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3481 VN_RELE(cs->vp); 3482 cs->vp = NULL; 3483 goto out; 3484 } 3485 3486 nfs_fh4_copy(&args->object, &cs->fh); 3487 *cs->statusp = resp->status = NFS4_OK; 3488 cs->deleg = FALSE; 3489 3490 out: 3491 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3492 PUTFH4res *, resp); 3493 } 3494 3495 /* ARGSUSED */ 3496 static void 3497 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3498 struct compound_state *cs) 3499 3500 { 3501 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3502 int error; 3503 fid_t fid; 3504 struct exportinfo *exi, *sav_exi; 3505 3506 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3507 3508 if (cs->vp) { 3509 VN_RELE(cs->vp); 3510 cs->vp = NULL; 3511 } 3512 3513 if (cs->cr) 3514 crfree(cs->cr); 3515 3516 cs->cr = crdup(cs->basecr); 3517 3518 /* 3519 * Using rootdir, the system root vnode, 3520 * get its fid. 3521 */ 3522 bzero(&fid, sizeof (fid)); 3523 fid.fid_len = MAXFIDSZ; 3524 error = vop_fid_pseudo(rootdir, &fid); 3525 if (error != 0) { 3526 *cs->statusp = resp->status = puterrno4(error); 3527 goto out; 3528 } 3529 3530 /* 3531 * Then use the root fsid & fid it to find out if it's exported 3532 * 3533 * If the server root isn't exported directly, then 3534 * it should at least be a pseudo export based on 3535 * one or more exports further down in the server's 3536 * file tree. 3537 */ 3538 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3539 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3540 NFS4_DEBUG(rfs4_debug, 3541 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3542 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3543 goto out; 3544 } 3545 3546 /* 3547 * Now make a filehandle based on the root 3548 * export and root vnode. 3549 */ 3550 error = makefh4(&cs->fh, rootdir, exi); 3551 if (error != 0) { 3552 *cs->statusp = resp->status = puterrno4(error); 3553 goto out; 3554 } 3555 3556 sav_exi = cs->exi; 3557 cs->exi = exi; 3558 3559 VN_HOLD(rootdir); 3560 cs->vp = rootdir; 3561 3562 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3563 VN_RELE(rootdir); 3564 cs->vp = NULL; 3565 cs->exi = sav_exi; 3566 goto out; 3567 } 3568 3569 *cs->statusp = resp->status = NFS4_OK; 3570 cs->deleg = FALSE; 3571 out: 3572 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3573 PUTROOTFH4res *, resp); 3574 } 3575 3576 /* 3577 * A directory entry is a valid nfsv4 entry if 3578 * - it has a non-zero ino 3579 * - it is not a dot or dotdot name 3580 * - it is visible in a pseudo export or in a real export that can 3581 * only have a limited view. 3582 */ 3583 static bool_t 3584 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3585 int *expseudo, int check_visible) 3586 { 3587 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3588 *expseudo = 0; 3589 return (FALSE); 3590 } 3591 3592 if (! check_visible) { 3593 *expseudo = 0; 3594 return (TRUE); 3595 } 3596 3597 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 3598 } 3599 3600 /* 3601 * set_rdattr_params sets up the variables used to manage what information 3602 * to get for each directory entry. 3603 */ 3604 static nfsstat4 3605 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3606 bitmap4 attrs, bool_t *need_to_lookup) 3607 { 3608 uint_t va_mask; 3609 nfsstat4 status; 3610 bitmap4 objbits; 3611 3612 status = bitmap4_to_attrmask(attrs, sargp); 3613 if (status != NFS4_OK) { 3614 /* 3615 * could not even figure attr mask 3616 */ 3617 return (status); 3618 } 3619 va_mask = sargp->vap->va_mask; 3620 3621 /* 3622 * dirent's d_ino is always correct value for mounted_on_fileid. 3623 * mntdfid_set is set once here, but mounted_on_fileid is 3624 * set in main dirent processing loop for each dirent. 3625 * The mntdfid_set is a simple optimization that lets the 3626 * server attr code avoid work when caller is readdir. 3627 */ 3628 sargp->mntdfid_set = TRUE; 3629 3630 /* 3631 * Lookup entry only if client asked for any of the following: 3632 * a) vattr attrs 3633 * b) vfs attrs 3634 * c) attrs w/per-object scope requested (change, filehandle, etc) 3635 * other than mounted_on_fileid (which we can take from dirent) 3636 */ 3637 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3638 3639 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3640 *need_to_lookup = TRUE; 3641 else 3642 *need_to_lookup = FALSE; 3643 3644 if (sargp->sbp == NULL) 3645 return (NFS4_OK); 3646 3647 /* 3648 * If filesystem attrs are requested, get them now from the 3649 * directory vp, as most entries will have same filesystem. The only 3650 * exception are mounted over entries but we handle 3651 * those as we go (XXX mounted over detection not yet implemented). 3652 */ 3653 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3654 status = bitmap4_get_sysattrs(sargp); 3655 sargp->vap->va_mask = va_mask; 3656 3657 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3658 /* 3659 * Failed to get filesystem attributes. 3660 * Return a rdattr_error for each entry, but don't fail. 3661 * However, don't get any obj-dependent attrs. 3662 */ 3663 sargp->rdattr_error = status; /* for rdattr_error */ 3664 *need_to_lookup = FALSE; 3665 /* 3666 * At least get fileid for regular readdir output 3667 */ 3668 sargp->vap->va_mask &= AT_NODEID; 3669 status = NFS4_OK; 3670 } 3671 3672 return (status); 3673 } 3674 3675 /* 3676 * readlink: args: CURRENT_FH. 3677 * res: status. If success - CURRENT_FH unchanged, return linktext. 3678 */ 3679 3680 /* ARGSUSED */ 3681 static void 3682 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3683 struct compound_state *cs) 3684 { 3685 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3686 int error; 3687 vnode_t *vp; 3688 struct iovec iov; 3689 struct vattr va; 3690 struct uio uio; 3691 char *data; 3692 struct sockaddr *ca; 3693 char *name = NULL; 3694 3695 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3696 3697 /* CURRENT_FH: directory */ 3698 vp = cs->vp; 3699 if (vp == NULL) { 3700 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3701 goto out; 3702 } 3703 3704 if (cs->access == CS_ACCESS_DENIED) { 3705 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3706 goto out; 3707 } 3708 3709 if (vp->v_type == VDIR) { 3710 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3711 goto out; 3712 } 3713 3714 if (vp->v_type != VLNK) { 3715 *cs->statusp = resp->status = NFS4ERR_INVAL; 3716 goto out; 3717 } 3718 3719 va.va_mask = AT_MODE; 3720 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3721 if (error) { 3722 *cs->statusp = resp->status = puterrno4(error); 3723 goto out; 3724 } 3725 3726 if (MANDLOCK(vp, va.va_mode)) { 3727 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3728 goto out; 3729 } 3730 3731 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3732 3733 iov.iov_base = data; 3734 iov.iov_len = MAXPATHLEN; 3735 uio.uio_iov = &iov; 3736 uio.uio_iovcnt = 1; 3737 uio.uio_segflg = UIO_SYSSPACE; 3738 uio.uio_extflg = UIO_COPY_CACHED; 3739 uio.uio_loffset = 0; 3740 uio.uio_resid = MAXPATHLEN; 3741 3742 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3743 3744 if (error) { 3745 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3746 *cs->statusp = resp->status = puterrno4(error); 3747 goto out; 3748 } 3749 3750 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3751 3752 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3753 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3754 MAXPATHLEN + 1); 3755 3756 if (name == NULL) { 3757 /* 3758 * Even though the conversion failed, we return 3759 * something. We just don't translate it. 3760 */ 3761 name = data; 3762 } 3763 3764 /* 3765 * treat link name as data 3766 */ 3767 (void) str_to_utf8(name, &resp->link); 3768 3769 if (name != data) 3770 kmem_free(name, MAXPATHLEN + 1); 3771 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3772 *cs->statusp = resp->status = NFS4_OK; 3773 3774 out: 3775 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3776 READLINK4res *, resp); 3777 } 3778 3779 static void 3780 rfs4_op_readlink_free(nfs_resop4 *resop) 3781 { 3782 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3783 utf8string *symlink = &resp->link; 3784 3785 if (symlink->utf8string_val) { 3786 UTF8STRING_FREE(*symlink) 3787 } 3788 } 3789 3790 /* 3791 * release_lockowner: 3792 * Release any state associated with the supplied 3793 * lockowner. Note if any lo_state is holding locks we will not 3794 * rele that lo_state and thus the lockowner will not be destroyed. 3795 * A client using lock after the lock owner stateid has been released 3796 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3797 * to reissue the lock with new_lock_owner set to TRUE. 3798 * args: lock_owner 3799 * res: status 3800 */ 3801 /* ARGSUSED */ 3802 static void 3803 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3804 struct svc_req *req, struct compound_state *cs) 3805 { 3806 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3807 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3808 rfs4_lockowner_t *lo; 3809 rfs4_openowner_t *oop; 3810 rfs4_state_t *sp; 3811 rfs4_lo_state_t *lsp; 3812 rfs4_client_t *cp; 3813 bool_t create = FALSE; 3814 locklist_t *llist; 3815 sysid_t sysid; 3816 3817 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3818 cs, RELEASE_LOCKOWNER4args *, ap); 3819 3820 /* Make sure there is a clientid around for this request */ 3821 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3822 3823 if (cp == NULL) { 3824 *cs->statusp = resp->status = 3825 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3826 goto out; 3827 } 3828 rfs4_client_rele(cp); 3829 3830 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3831 if (lo == NULL) { 3832 *cs->statusp = resp->status = NFS4_OK; 3833 goto out; 3834 } 3835 ASSERT(lo->client != NULL); 3836 3837 /* 3838 * Check for EXPIRED client. If so will reap state with in a lease 3839 * period or on next set_clientid_confirm step 3840 */ 3841 if (rfs4_lease_expired(lo->client)) { 3842 rfs4_lockowner_rele(lo); 3843 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3844 goto out; 3845 } 3846 3847 /* 3848 * If no sysid has been assigned, then no locks exist; just return. 3849 */ 3850 rfs4_dbe_lock(lo->client->dbe); 3851 if (lo->client->sysidt == LM_NOSYSID) { 3852 rfs4_lockowner_rele(lo); 3853 rfs4_dbe_unlock(lo->client->dbe); 3854 goto out; 3855 } 3856 3857 sysid = lo->client->sysidt; 3858 rfs4_dbe_unlock(lo->client->dbe); 3859 3860 /* 3861 * Mark the lockowner invalid. 3862 */ 3863 rfs4_dbe_hide(lo->dbe); 3864 3865 /* 3866 * sysid-pid pair should now not be used since the lockowner is 3867 * invalid. If the client were to instantiate the lockowner again 3868 * it would be assigned a new pid. Thus we can get the list of 3869 * current locks. 3870 */ 3871 3872 llist = flk_get_active_locks(sysid, lo->pid); 3873 /* If we are still holding locks fail */ 3874 if (llist != NULL) { 3875 3876 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3877 3878 flk_free_locklist(llist); 3879 /* 3880 * We need to unhide the lockowner so the client can 3881 * try it again. The bad thing here is if the client 3882 * has a logic error that took it here in the first place 3883 * he probably has lost accounting of the locks that it 3884 * is holding. So we may have dangling state until the 3885 * open owner state is reaped via close. One scenario 3886 * that could possibly occur is that the client has 3887 * sent the unlock request(s) in separate threads 3888 * and has not waited for the replies before sending the 3889 * RELEASE_LOCKOWNER request. Presumably, it would expect 3890 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3891 * reissuing the request. 3892 */ 3893 rfs4_dbe_unhide(lo->dbe); 3894 rfs4_lockowner_rele(lo); 3895 goto out; 3896 } 3897 3898 /* 3899 * For the corresponding client we need to check each open 3900 * owner for any opens that have lockowner state associated 3901 * with this lockowner. 3902 */ 3903 3904 rfs4_dbe_lock(lo->client->dbe); 3905 for (oop = lo->client->openownerlist.next->oop; oop != NULL; 3906 oop = oop->openownerlist.next->oop) { 3907 3908 rfs4_dbe_lock(oop->dbe); 3909 for (sp = oop->ownerstateids.next->sp; sp != NULL; 3910 sp = sp->ownerstateids.next->sp) { 3911 3912 rfs4_dbe_lock(sp->dbe); 3913 for (lsp = sp->lockownerlist.next->lsp; 3914 lsp != NULL; lsp = lsp->lockownerlist.next->lsp) { 3915 if (lsp->locker == lo) { 3916 rfs4_dbe_lock(lsp->dbe); 3917 rfs4_dbe_invalidate(lsp->dbe); 3918 rfs4_dbe_unlock(lsp->dbe); 3919 } 3920 } 3921 rfs4_dbe_unlock(sp->dbe); 3922 } 3923 rfs4_dbe_unlock(oop->dbe); 3924 } 3925 rfs4_dbe_unlock(lo->client->dbe); 3926 3927 rfs4_lockowner_rele(lo); 3928 3929 *cs->statusp = resp->status = NFS4_OK; 3930 3931 out: 3932 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 3933 cs, RELEASE_LOCKOWNER4res *, resp); 3934 } 3935 3936 /* 3937 * short utility function to lookup a file and recall the delegation 3938 */ 3939 static rfs4_file_t * 3940 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 3941 int *lkup_error, cred_t *cr) 3942 { 3943 vnode_t *vp; 3944 rfs4_file_t *fp = NULL; 3945 bool_t fcreate = FALSE; 3946 int error; 3947 3948 if (vpp) 3949 *vpp = NULL; 3950 3951 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 3952 NULL)) == 0) { 3953 if (vp->v_type == VREG) 3954 fp = rfs4_findfile(vp, NULL, &fcreate); 3955 if (vpp) 3956 *vpp = vp; 3957 else 3958 VN_RELE(vp); 3959 } 3960 3961 if (lkup_error) 3962 *lkup_error = error; 3963 3964 return (fp); 3965 } 3966 3967 /* 3968 * remove: args: CURRENT_FH: directory; name. 3969 * res: status. If success - CURRENT_FH unchanged, return change_info 3970 * for directory. 3971 */ 3972 /* ARGSUSED */ 3973 static void 3974 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3975 struct compound_state *cs) 3976 { 3977 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 3978 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 3979 int error; 3980 vnode_t *dvp, *vp; 3981 struct vattr bdva, idva, adva; 3982 char *nm; 3983 uint_t len; 3984 rfs4_file_t *fp; 3985 int in_crit = 0; 3986 bslabel_t *clabel; 3987 struct sockaddr *ca; 3988 char *name = NULL; 3989 3990 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 3991 REMOVE4args *, args); 3992 3993 /* CURRENT_FH: directory */ 3994 dvp = cs->vp; 3995 if (dvp == NULL) { 3996 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3997 goto out; 3998 } 3999 4000 if (cs->access == CS_ACCESS_DENIED) { 4001 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4002 goto out; 4003 } 4004 4005 /* 4006 * If there is an unshared filesystem mounted on this vnode, 4007 * Do not allow to remove anything in this directory. 4008 */ 4009 if (vn_ismntpt(dvp)) { 4010 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4011 goto out; 4012 } 4013 4014 if (dvp->v_type != VDIR) { 4015 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4016 goto out; 4017 } 4018 4019 if (!utf8_dir_verify(&args->target)) { 4020 *cs->statusp = resp->status = NFS4ERR_INVAL; 4021 goto out; 4022 } 4023 4024 /* 4025 * Lookup the file so that we can check if it's a directory 4026 */ 4027 nm = utf8_to_fn(&args->target, &len, NULL); 4028 if (nm == NULL) { 4029 *cs->statusp = resp->status = NFS4ERR_INVAL; 4030 goto out; 4031 } 4032 4033 if (len > MAXNAMELEN) { 4034 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4035 kmem_free(nm, len); 4036 goto out; 4037 } 4038 4039 if (rdonly4(cs->exi, cs->vp, req)) { 4040 *cs->statusp = resp->status = NFS4ERR_ROFS; 4041 kmem_free(nm, len); 4042 goto out; 4043 } 4044 4045 /* If necessary, convert to UTF-8 for illbehaved clients */ 4046 4047 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4048 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4049 MAXPATHLEN + 1); 4050 4051 if (name == NULL) { 4052 *cs->statusp = resp->status = NFS4ERR_INVAL; 4053 kmem_free(nm, len); 4054 goto out; 4055 } 4056 4057 /* 4058 * Lookup the file to determine type and while we are see if 4059 * there is a file struct around and check for delegation. 4060 * We don't need to acquire va_seq before this lookup, if 4061 * it causes an update, cinfo.before will not match, which will 4062 * trigger a cache flush even if atomic is TRUE. 4063 */ 4064 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4065 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4066 NULL)) { 4067 VN_RELE(vp); 4068 rfs4_file_rele(fp); 4069 *cs->statusp = resp->status = NFS4ERR_DELAY; 4070 if (nm != name) 4071 kmem_free(name, MAXPATHLEN + 1); 4072 kmem_free(nm, len); 4073 goto out; 4074 } 4075 } 4076 4077 /* Didn't find anything to remove */ 4078 if (vp == NULL) { 4079 *cs->statusp = resp->status = error; 4080 if (nm != name) 4081 kmem_free(name, MAXPATHLEN + 1); 4082 kmem_free(nm, len); 4083 goto out; 4084 } 4085 4086 if (nbl_need_check(vp)) { 4087 nbl_start_crit(vp, RW_READER); 4088 in_crit = 1; 4089 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4090 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4091 if (nm != name) 4092 kmem_free(name, MAXPATHLEN + 1); 4093 kmem_free(nm, len); 4094 nbl_end_crit(vp); 4095 VN_RELE(vp); 4096 if (fp) { 4097 rfs4_clear_dont_grant(fp); 4098 rfs4_file_rele(fp); 4099 } 4100 goto out; 4101 } 4102 } 4103 4104 /* check label before allowing removal */ 4105 if (is_system_labeled()) { 4106 ASSERT(req->rq_label != NULL); 4107 clabel = req->rq_label; 4108 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4109 "got client label from request(1)", 4110 struct svc_req *, req); 4111 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4112 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK)) { 4113 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4114 if (name != nm) 4115 kmem_free(name, MAXPATHLEN + 1); 4116 kmem_free(nm, len); 4117 if (in_crit) 4118 nbl_end_crit(vp); 4119 VN_RELE(vp); 4120 if (fp) { 4121 rfs4_clear_dont_grant(fp); 4122 rfs4_file_rele(fp); 4123 } 4124 goto out; 4125 } 4126 } 4127 } 4128 4129 /* Get dir "before" change value */ 4130 bdva.va_mask = AT_CTIME|AT_SEQ; 4131 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4132 if (error) { 4133 *cs->statusp = resp->status = puterrno4(error); 4134 if (nm != name) 4135 kmem_free(name, MAXPATHLEN + 1); 4136 kmem_free(nm, len); 4137 if (in_crit) 4138 nbl_end_crit(vp); 4139 VN_RELE(vp); 4140 if (fp) { 4141 rfs4_clear_dont_grant(fp); 4142 rfs4_file_rele(fp); 4143 } 4144 goto out; 4145 } 4146 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4147 4148 /* Actually do the REMOVE operation */ 4149 if (vp->v_type == VDIR) { 4150 /* 4151 * Can't remove a directory that has a mounted-on filesystem. 4152 */ 4153 if (vn_ismntpt(vp)) { 4154 error = EACCES; 4155 } else { 4156 /* 4157 * System V defines rmdir to return EEXIST, 4158 * not * ENOTEMPTY, if the directory is not 4159 * empty. A System V NFS server needs to map 4160 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4161 * transmit over the wire. 4162 */ 4163 if ((error = VOP_RMDIR(dvp, nm, rootdir, cs->cr, 4164 NULL, 0)) == EEXIST) 4165 error = ENOTEMPTY; 4166 } 4167 } else { 4168 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4169 fp != NULL) { 4170 struct vattr va; 4171 vnode_t *tvp; 4172 4173 rfs4_dbe_lock(fp->dbe); 4174 tvp = fp->vp; 4175 if (tvp) 4176 VN_HOLD(tvp); 4177 rfs4_dbe_unlock(fp->dbe); 4178 4179 if (tvp) { 4180 /* 4181 * This is va_seq safe because we are not 4182 * manipulating dvp. 4183 */ 4184 va.va_mask = AT_NLINK; 4185 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4186 va.va_nlink == 0) { 4187 /* Remove state on file remove */ 4188 if (in_crit) { 4189 nbl_end_crit(vp); 4190 in_crit = 0; 4191 } 4192 rfs4_close_all_state(fp); 4193 } 4194 VN_RELE(tvp); 4195 } 4196 } 4197 } 4198 4199 if (in_crit) 4200 nbl_end_crit(vp); 4201 VN_RELE(vp); 4202 4203 if (fp) { 4204 rfs4_clear_dont_grant(fp); 4205 rfs4_file_rele(fp); 4206 } 4207 if (nm != name) 4208 kmem_free(name, MAXPATHLEN + 1); 4209 kmem_free(nm, len); 4210 4211 if (error) { 4212 *cs->statusp = resp->status = puterrno4(error); 4213 goto out; 4214 } 4215 4216 /* 4217 * Get the initial "after" sequence number, if it fails, set to zero 4218 */ 4219 idva.va_mask = AT_SEQ; 4220 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4221 idva.va_seq = 0; 4222 4223 /* 4224 * Force modified data and metadata out to stable storage. 4225 */ 4226 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4227 4228 /* 4229 * Get "after" change value, if it fails, simply return the 4230 * before value. 4231 */ 4232 adva.va_mask = AT_CTIME|AT_SEQ; 4233 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4234 adva.va_ctime = bdva.va_ctime; 4235 adva.va_seq = 0; 4236 } 4237 4238 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4239 4240 /* 4241 * The cinfo.atomic = TRUE only if we have 4242 * non-zero va_seq's, and it has incremented by exactly one 4243 * during the VOP_REMOVE/RMDIR and it didn't change during 4244 * the VOP_FSYNC. 4245 */ 4246 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4247 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4248 resp->cinfo.atomic = TRUE; 4249 else 4250 resp->cinfo.atomic = FALSE; 4251 4252 *cs->statusp = resp->status = NFS4_OK; 4253 4254 out: 4255 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4256 REMOVE4res *, resp); 4257 } 4258 4259 /* 4260 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4261 * oldname and newname. 4262 * res: status. If success - CURRENT_FH unchanged, return change_info 4263 * for both from and target directories. 4264 */ 4265 /* ARGSUSED */ 4266 static void 4267 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4268 struct compound_state *cs) 4269 { 4270 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4271 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4272 int error; 4273 vnode_t *odvp; 4274 vnode_t *ndvp; 4275 vnode_t *srcvp, *targvp; 4276 struct vattr obdva, oidva, oadva; 4277 struct vattr nbdva, nidva, nadva; 4278 char *onm, *nnm; 4279 uint_t olen, nlen; 4280 rfs4_file_t *fp, *sfp; 4281 int in_crit_src, in_crit_targ; 4282 int fp_rele_grant_hold, sfp_rele_grant_hold; 4283 bslabel_t *clabel; 4284 struct sockaddr *ca; 4285 char *converted_onm = NULL; 4286 char *converted_nnm = NULL; 4287 4288 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4289 RENAME4args *, args); 4290 4291 fp = sfp = NULL; 4292 srcvp = targvp = NULL; 4293 in_crit_src = in_crit_targ = 0; 4294 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4295 4296 /* CURRENT_FH: target directory */ 4297 ndvp = cs->vp; 4298 if (ndvp == NULL) { 4299 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4300 goto out; 4301 } 4302 4303 /* SAVED_FH: from directory */ 4304 odvp = cs->saved_vp; 4305 if (odvp == NULL) { 4306 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4307 goto out; 4308 } 4309 4310 if (cs->access == CS_ACCESS_DENIED) { 4311 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4312 goto out; 4313 } 4314 4315 /* 4316 * If there is an unshared filesystem mounted on this vnode, 4317 * do not allow to rename objects in this directory. 4318 */ 4319 if (vn_ismntpt(odvp)) { 4320 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4321 goto out; 4322 } 4323 4324 /* 4325 * If there is an unshared filesystem mounted on this vnode, 4326 * do not allow to rename to this directory. 4327 */ 4328 if (vn_ismntpt(ndvp)) { 4329 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4330 goto out; 4331 } 4332 4333 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4334 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4335 goto out; 4336 } 4337 4338 if (cs->saved_exi != cs->exi) { 4339 *cs->statusp = resp->status = NFS4ERR_XDEV; 4340 goto out; 4341 } 4342 4343 if (!utf8_dir_verify(&args->oldname)) { 4344 *cs->statusp = resp->status = NFS4ERR_INVAL; 4345 goto out; 4346 } 4347 4348 if (!utf8_dir_verify(&args->newname)) { 4349 *cs->statusp = resp->status = NFS4ERR_INVAL; 4350 goto out; 4351 } 4352 4353 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4354 if (onm == NULL) { 4355 *cs->statusp = resp->status = NFS4ERR_INVAL; 4356 goto out; 4357 } 4358 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4359 nlen = MAXPATHLEN + 1; 4360 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4361 nlen); 4362 4363 if (converted_onm == NULL) { 4364 *cs->statusp = resp->status = NFS4ERR_INVAL; 4365 kmem_free(onm, olen); 4366 goto out; 4367 } 4368 4369 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4370 if (nnm == NULL) { 4371 *cs->statusp = resp->status = NFS4ERR_INVAL; 4372 if (onm != converted_onm) 4373 kmem_free(converted_onm, MAXPATHLEN + 1); 4374 kmem_free(onm, olen); 4375 goto out; 4376 } 4377 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4378 MAXPATHLEN + 1); 4379 4380 if (converted_nnm == NULL) { 4381 *cs->statusp = resp->status = NFS4ERR_INVAL; 4382 kmem_free(nnm, nlen); 4383 nnm = NULL; 4384 if (onm != converted_onm) 4385 kmem_free(converted_onm, MAXPATHLEN + 1); 4386 kmem_free(onm, olen); 4387 goto out; 4388 } 4389 4390 4391 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4392 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4393 kmem_free(onm, olen); 4394 kmem_free(nnm, nlen); 4395 goto out; 4396 } 4397 4398 4399 if (rdonly4(cs->exi, cs->vp, req)) { 4400 *cs->statusp = resp->status = NFS4ERR_ROFS; 4401 if (onm != converted_onm) 4402 kmem_free(converted_onm, MAXPATHLEN + 1); 4403 kmem_free(onm, olen); 4404 if (nnm != converted_nnm) 4405 kmem_free(converted_nnm, MAXPATHLEN + 1); 4406 kmem_free(nnm, nlen); 4407 goto out; 4408 } 4409 4410 /* check label of the target dir */ 4411 if (is_system_labeled()) { 4412 ASSERT(req->rq_label != NULL); 4413 clabel = req->rq_label; 4414 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4415 "got client label from request(1)", 4416 struct svc_req *, req); 4417 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4418 if (!do_rfs_label_check(clabel, ndvp, 4419 EQUALITY_CHECK)) { 4420 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4421 goto err_out; 4422 } 4423 } 4424 } 4425 4426 /* 4427 * Is the source a file and have a delegation? 4428 * We don't need to acquire va_seq before these lookups, if 4429 * it causes an update, cinfo.before will not match, which will 4430 * trigger a cache flush even if atomic is TRUE. 4431 */ 4432 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4433 &error, cs->cr)) { 4434 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4435 NULL)) { 4436 *cs->statusp = resp->status = NFS4ERR_DELAY; 4437 goto err_out; 4438 } 4439 } 4440 4441 if (srcvp == NULL) { 4442 *cs->statusp = resp->status = puterrno4(error); 4443 if (onm != converted_onm) 4444 kmem_free(converted_onm, MAXPATHLEN + 1); 4445 kmem_free(onm, olen); 4446 if (nnm != converted_nnm) 4447 kmem_free(converted_onm, MAXPATHLEN + 1); 4448 kmem_free(nnm, nlen); 4449 goto out; 4450 } 4451 4452 sfp_rele_grant_hold = 1; 4453 4454 /* Does the destination exist and a file and have a delegation? */ 4455 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4456 NULL, cs->cr)) { 4457 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4458 NULL)) { 4459 *cs->statusp = resp->status = NFS4ERR_DELAY; 4460 goto err_out; 4461 } 4462 } 4463 fp_rele_grant_hold = 1; 4464 4465 4466 /* Check for NBMAND lock on both source and target */ 4467 if (nbl_need_check(srcvp)) { 4468 nbl_start_crit(srcvp, RW_READER); 4469 in_crit_src = 1; 4470 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4471 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4472 goto err_out; 4473 } 4474 } 4475 4476 if (targvp && nbl_need_check(targvp)) { 4477 nbl_start_crit(targvp, RW_READER); 4478 in_crit_targ = 1; 4479 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4480 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4481 goto err_out; 4482 } 4483 } 4484 4485 /* Get source "before" change value */ 4486 obdva.va_mask = AT_CTIME|AT_SEQ; 4487 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4488 if (!error) { 4489 nbdva.va_mask = AT_CTIME|AT_SEQ; 4490 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4491 } 4492 if (error) { 4493 *cs->statusp = resp->status = puterrno4(error); 4494 goto err_out; 4495 } 4496 4497 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4498 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4499 4500 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4501 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4502 struct vattr va; 4503 vnode_t *tvp; 4504 4505 rfs4_dbe_lock(fp->dbe); 4506 tvp = fp->vp; 4507 if (tvp) 4508 VN_HOLD(tvp); 4509 rfs4_dbe_unlock(fp->dbe); 4510 4511 if (tvp) { 4512 va.va_mask = AT_NLINK; 4513 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4514 va.va_nlink == 0) { 4515 /* The file is gone and so should the state */ 4516 if (in_crit_targ) { 4517 nbl_end_crit(targvp); 4518 in_crit_targ = 0; 4519 } 4520 rfs4_close_all_state(fp); 4521 } 4522 VN_RELE(tvp); 4523 } 4524 } 4525 if (error == 0) 4526 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4527 4528 if (in_crit_src) 4529 nbl_end_crit(srcvp); 4530 if (srcvp) 4531 VN_RELE(srcvp); 4532 if (in_crit_targ) 4533 nbl_end_crit(targvp); 4534 if (targvp) 4535 VN_RELE(targvp); 4536 4537 if (sfp) { 4538 rfs4_clear_dont_grant(sfp); 4539 rfs4_file_rele(sfp); 4540 } 4541 if (fp) { 4542 rfs4_clear_dont_grant(fp); 4543 rfs4_file_rele(fp); 4544 } 4545 4546 if (converted_onm != onm) 4547 kmem_free(converted_onm, MAXPATHLEN + 1); 4548 kmem_free(onm, olen); 4549 if (converted_nnm != nnm) 4550 kmem_free(converted_nnm, MAXPATHLEN + 1); 4551 kmem_free(nnm, nlen); 4552 4553 /* 4554 * Get the initial "after" sequence number, if it fails, set to zero 4555 */ 4556 oidva.va_mask = AT_SEQ; 4557 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4558 oidva.va_seq = 0; 4559 4560 nidva.va_mask = AT_SEQ; 4561 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4562 nidva.va_seq = 0; 4563 4564 /* 4565 * Force modified data and metadata out to stable storage. 4566 */ 4567 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4568 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4569 4570 if (error) { 4571 *cs->statusp = resp->status = puterrno4(error); 4572 goto out; 4573 } 4574 4575 /* 4576 * Get "after" change values, if it fails, simply return the 4577 * before value. 4578 */ 4579 oadva.va_mask = AT_CTIME|AT_SEQ; 4580 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4581 oadva.va_ctime = obdva.va_ctime; 4582 oadva.va_seq = 0; 4583 } 4584 4585 nadva.va_mask = AT_CTIME|AT_SEQ; 4586 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4587 nadva.va_ctime = nbdva.va_ctime; 4588 nadva.va_seq = 0; 4589 } 4590 4591 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4592 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4593 4594 /* 4595 * The cinfo.atomic = TRUE only if we have 4596 * non-zero va_seq's, and it has incremented by exactly one 4597 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4598 */ 4599 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4600 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4601 resp->source_cinfo.atomic = TRUE; 4602 else 4603 resp->source_cinfo.atomic = FALSE; 4604 4605 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4606 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4607 resp->target_cinfo.atomic = TRUE; 4608 else 4609 resp->target_cinfo.atomic = FALSE; 4610 4611 #ifdef VOLATILE_FH_TEST 4612 { 4613 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4614 4615 /* 4616 * Add the renamed file handle to the volatile rename list 4617 */ 4618 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4619 /* file handles may expire on rename */ 4620 vnode_t *vp; 4621 4622 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4623 /* 4624 * Already know that nnm will be a valid string 4625 */ 4626 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4627 NULL, NULL, NULL); 4628 kmem_free(nnm, nlen); 4629 if (!error) { 4630 add_volrnm_fh(cs->exi, vp); 4631 VN_RELE(vp); 4632 } 4633 } 4634 } 4635 #endif /* VOLATILE_FH_TEST */ 4636 4637 *cs->statusp = resp->status = NFS4_OK; 4638 out: 4639 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4640 RENAME4res *, resp); 4641 return; 4642 4643 err_out: 4644 if (onm != converted_onm) 4645 kmem_free(converted_onm, MAXPATHLEN + 1); 4646 if (onm != NULL) 4647 kmem_free(onm, olen); 4648 if (nnm != converted_nnm) 4649 kmem_free(converted_nnm, MAXPATHLEN + 1); 4650 if (nnm != NULL) 4651 kmem_free(nnm, nlen); 4652 4653 if (in_crit_src) nbl_end_crit(srcvp); 4654 if (in_crit_targ) nbl_end_crit(targvp); 4655 if (targvp) VN_RELE(targvp); 4656 if (srcvp) VN_RELE(srcvp); 4657 if (sfp) { 4658 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4659 rfs4_file_rele(sfp); 4660 } 4661 if (fp) { 4662 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4663 rfs4_file_rele(fp); 4664 } 4665 4666 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4667 RENAME4res *, resp); 4668 } 4669 4670 /* ARGSUSED */ 4671 static void 4672 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4673 struct compound_state *cs) 4674 { 4675 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4676 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4677 rfs4_client_t *cp; 4678 4679 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4680 RENEW4args *, args); 4681 4682 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4683 *cs->statusp = resp->status = 4684 rfs4_check_clientid(&args->clientid, 0); 4685 goto out; 4686 } 4687 4688 if (rfs4_lease_expired(cp)) { 4689 rfs4_client_rele(cp); 4690 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4691 goto out; 4692 } 4693 4694 rfs4_update_lease(cp); 4695 4696 mutex_enter(cp->cbinfo.cb_lock); 4697 if (cp->cbinfo.cb_notified_of_cb_path_down == FALSE) { 4698 cp->cbinfo.cb_notified_of_cb_path_down = TRUE; 4699 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4700 } else { 4701 *cs->statusp = resp->status = NFS4_OK; 4702 } 4703 mutex_exit(cp->cbinfo.cb_lock); 4704 4705 rfs4_client_rele(cp); 4706 4707 out: 4708 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4709 RENEW4res *, resp); 4710 } 4711 4712 /* ARGSUSED */ 4713 static void 4714 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4715 struct compound_state *cs) 4716 { 4717 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4718 4719 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4720 4721 /* No need to check cs->access - we are not accessing any object */ 4722 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4723 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4724 goto out; 4725 } 4726 if (cs->vp != NULL) { 4727 VN_RELE(cs->vp); 4728 } 4729 cs->vp = cs->saved_vp; 4730 cs->saved_vp = NULL; 4731 cs->exi = cs->saved_exi; 4732 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4733 *cs->statusp = resp->status = NFS4_OK; 4734 cs->deleg = FALSE; 4735 4736 out: 4737 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4738 RESTOREFH4res *, resp); 4739 } 4740 4741 /* ARGSUSED */ 4742 static void 4743 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4744 struct compound_state *cs) 4745 { 4746 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4747 4748 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4749 4750 /* No need to check cs->access - we are not accessing any object */ 4751 if (cs->vp == NULL) { 4752 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4753 goto out; 4754 } 4755 if (cs->saved_vp != NULL) { 4756 VN_RELE(cs->saved_vp); 4757 } 4758 cs->saved_vp = cs->vp; 4759 VN_HOLD(cs->saved_vp); 4760 cs->saved_exi = cs->exi; 4761 /* 4762 * since SAVEFH is fairly rare, don't alloc space for its fh 4763 * unless necessary. 4764 */ 4765 if (cs->saved_fh.nfs_fh4_val == NULL) { 4766 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4767 } 4768 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4769 *cs->statusp = resp->status = NFS4_OK; 4770 4771 out: 4772 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4773 SAVEFH4res *, resp); 4774 } 4775 4776 /* 4777 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4778 * return the bitmap of attrs that were set successfully. It is also 4779 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4780 * always be called only after rfs4_do_set_attrs(). 4781 * 4782 * Verify that the attributes are same as the expected ones. sargp->vap 4783 * and sargp->sbp contain the input attributes as translated from fattr4. 4784 * 4785 * This function verifies only the attrs that correspond to a vattr or 4786 * vfsstat struct. That is because of the extra step needed to get the 4787 * corresponding system structs. Other attributes have already been set or 4788 * verified by do_rfs4_set_attrs. 4789 * 4790 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4791 */ 4792 static int 4793 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4794 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4795 { 4796 int error, ret_error = 0; 4797 int i, k; 4798 uint_t sva_mask = sargp->vap->va_mask; 4799 uint_t vbit; 4800 union nfs4_attr_u *na; 4801 uint8_t *amap; 4802 bool_t getsb = ntovp->vfsstat; 4803 4804 if (sva_mask != 0) { 4805 /* 4806 * Okay to overwrite sargp->vap because we verify based 4807 * on the incoming values. 4808 */ 4809 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4810 sargp->cs->cr, NULL); 4811 if (ret_error) { 4812 if (resp == NULL) 4813 return (ret_error); 4814 /* 4815 * Must return bitmap of successful attrs 4816 */ 4817 sva_mask = 0; /* to prevent checking vap later */ 4818 } else { 4819 /* 4820 * Some file systems clobber va_mask. it is probably 4821 * wrong of them to do so, nonethless we practice 4822 * defensive coding. 4823 * See bug id 4276830. 4824 */ 4825 sargp->vap->va_mask = sva_mask; 4826 } 4827 } 4828 4829 if (getsb) { 4830 /* 4831 * Now get the superblock and loop on the bitmap, as there is 4832 * no simple way of translating from superblock to bitmap4. 4833 */ 4834 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4835 if (ret_error) { 4836 if (resp == NULL) 4837 goto errout; 4838 getsb = FALSE; 4839 } 4840 } 4841 4842 /* 4843 * Now loop and verify each attribute which getattr returned 4844 * whether it's the same as the input. 4845 */ 4846 if (resp == NULL && !getsb && (sva_mask == 0)) 4847 goto errout; 4848 4849 na = ntovp->na; 4850 amap = ntovp->amap; 4851 k = 0; 4852 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4853 k = *amap; 4854 ASSERT(nfs4_ntov_map[k].nval == k); 4855 vbit = nfs4_ntov_map[k].vbit; 4856 4857 /* 4858 * If vattr attribute but VOP_GETATTR failed, or it's 4859 * superblock attribute but VFS_STATVFS failed, skip 4860 */ 4861 if (vbit) { 4862 if ((vbit & sva_mask) == 0) 4863 continue; 4864 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4865 continue; 4866 } 4867 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4868 if (resp != NULL) { 4869 if (error) 4870 ret_error = -1; /* not all match */ 4871 else /* update response bitmap */ 4872 *resp |= nfs4_ntov_map[k].fbit; 4873 continue; 4874 } 4875 if (error) { 4876 ret_error = -1; /* not all match */ 4877 break; 4878 } 4879 } 4880 errout: 4881 return (ret_error); 4882 } 4883 4884 /* 4885 * Decode the attribute to be set/verified. If the attr requires a sys op 4886 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4887 * call the sv_getit function for it, because the sys op hasn't yet been done. 4888 * Return 0 for success, error code if failed. 4889 * 4890 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 4891 */ 4892 static int 4893 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 4894 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 4895 { 4896 int error = 0; 4897 bool_t set_later; 4898 4899 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 4900 4901 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 4902 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 4903 /* 4904 * don't verify yet if a vattr or sb dependent attr, 4905 * because we don't have their sys values yet. 4906 * Will be done later. 4907 */ 4908 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 4909 /* 4910 * ACLs are a special case, since setting the MODE 4911 * conflicts with setting the ACL. We delay setting 4912 * the ACL until all other attributes have been set. 4913 * The ACL gets set in do_rfs4_op_setattr(). 4914 */ 4915 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 4916 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 4917 sargp, nap); 4918 if (error) { 4919 xdr_free(nfs4_ntov_map[k].xfunc, 4920 (caddr_t)nap); 4921 } 4922 } 4923 } 4924 } else { 4925 #ifdef DEBUG 4926 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 4927 "decoding attribute %d\n", k); 4928 #endif 4929 error = EINVAL; 4930 } 4931 if (!error && resp_bval && !set_later) { 4932 *resp_bval |= nfs4_ntov_map[k].fbit; 4933 } 4934 4935 return (error); 4936 } 4937 4938 /* 4939 * Set vattr based on incoming fattr4 attrs - used by setattr. 4940 * Set response mask. Ignore any values that are not writable vattr attrs. 4941 */ 4942 static nfsstat4 4943 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4944 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 4945 nfs4_attr_cmd_t cmd) 4946 { 4947 int error = 0; 4948 int i; 4949 char *attrs = fattrp->attrlist4; 4950 uint32_t attrslen = fattrp->attrlist4_len; 4951 XDR xdr; 4952 nfsstat4 status = NFS4_OK; 4953 vnode_t *vp = cs->vp; 4954 union nfs4_attr_u *na; 4955 uint8_t *amap; 4956 4957 #ifndef lint 4958 /* 4959 * Make sure that maximum attribute number can be expressed as an 4960 * 8 bit quantity. 4961 */ 4962 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 4963 #endif 4964 4965 if (vp == NULL) { 4966 if (resp) 4967 *resp = 0; 4968 return (NFS4ERR_NOFILEHANDLE); 4969 } 4970 if (cs->access == CS_ACCESS_DENIED) { 4971 if (resp) 4972 *resp = 0; 4973 return (NFS4ERR_ACCESS); 4974 } 4975 4976 sargp->op = cmd; 4977 sargp->cs = cs; 4978 sargp->flag = 0; /* may be set later */ 4979 sargp->vap->va_mask = 0; 4980 sargp->rdattr_error = NFS4_OK; 4981 sargp->rdattr_error_req = FALSE; 4982 /* sargp->sbp is set by the caller */ 4983 4984 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 4985 4986 na = ntovp->na; 4987 amap = ntovp->amap; 4988 4989 /* 4990 * The following loop iterates on the nfs4_ntov_map checking 4991 * if the fbit is set in the requested bitmap. 4992 * If set then we process the arguments using the 4993 * rfs4_fattr4 conversion functions to populate the setattr 4994 * vattr and va_mask. Any settable attrs that are not using vattr 4995 * will be set in this loop. 4996 */ 4997 for (i = 0; i < nfs4_ntov_map_size; i++) { 4998 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 4999 continue; 5000 } 5001 /* 5002 * If setattr, must be a writable attr. 5003 * If verify/nverify, must be a readable attr. 5004 */ 5005 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5006 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5007 /* 5008 * Client tries to set/verify an 5009 * unsupported attribute, tries to set 5010 * a read only attr or verify a write 5011 * only one - error! 5012 */ 5013 break; 5014 } 5015 /* 5016 * Decode the attribute to set/verify 5017 */ 5018 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5019 &xdr, resp ? resp : NULL, na); 5020 if (error) 5021 break; 5022 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5023 na++; 5024 (ntovp->attrcnt)++; 5025 if (nfs4_ntov_map[i].vfsstat) 5026 ntovp->vfsstat = TRUE; 5027 } 5028 5029 if (error != 0) 5030 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5031 puterrno4(error)); 5032 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5033 return (status); 5034 } 5035 5036 static nfsstat4 5037 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5038 stateid4 *stateid) 5039 { 5040 int error = 0; 5041 struct nfs4_svgetit_arg sarg; 5042 bool_t trunc; 5043 5044 nfsstat4 status = NFS4_OK; 5045 cred_t *cr = cs->cr; 5046 vnode_t *vp = cs->vp; 5047 struct nfs4_ntov_table ntov; 5048 struct statvfs64 sb; 5049 struct vattr bva; 5050 struct flock64 bf; 5051 int in_crit = 0; 5052 uint_t saved_mask = 0; 5053 caller_context_t ct; 5054 5055 *resp = 0; 5056 sarg.sbp = &sb; 5057 nfs4_ntov_table_init(&ntov); 5058 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5059 NFS4ATTR_SETIT); 5060 if (status != NFS4_OK) { 5061 /* 5062 * failed set attrs 5063 */ 5064 goto done; 5065 } 5066 if ((sarg.vap->va_mask == 0) && 5067 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5068 /* 5069 * no further work to be done 5070 */ 5071 goto done; 5072 } 5073 5074 /* 5075 * If we got a request to set the ACL and the MODE, only 5076 * allow changing VSUID, VSGID, and VSVTX. Attempting 5077 * to change any other bits, along with setting an ACL, 5078 * gives NFS4ERR_INVAL. 5079 */ 5080 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5081 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5082 vattr_t va; 5083 5084 va.va_mask = AT_MODE; 5085 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5086 if (error) { 5087 status = puterrno4(error); 5088 goto done; 5089 } 5090 if ((sarg.vap->va_mode ^ va.va_mode) & 5091 ~(VSUID | VSGID | VSVTX)) { 5092 status = NFS4ERR_INVAL; 5093 goto done; 5094 } 5095 } 5096 5097 /* Check stateid only if size has been set */ 5098 if (sarg.vap->va_mask & AT_SIZE) { 5099 trunc = (sarg.vap->va_size == 0); 5100 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5101 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5102 if (status != NFS4_OK) 5103 goto done; 5104 } else { 5105 ct.cc_sysid = 0; 5106 ct.cc_pid = 0; 5107 ct.cc_caller_id = nfs4_srv_caller_id; 5108 ct.cc_flags = CC_DONTBLOCK; 5109 } 5110 5111 /* XXX start of possible race with delegations */ 5112 5113 /* 5114 * We need to specially handle size changes because it is 5115 * possible for the client to create a file with read-only 5116 * modes, but with the file opened for writing. If the client 5117 * then tries to set the file size, e.g. ftruncate(3C), 5118 * fcntl(F_FREESP), the normal access checking done in 5119 * VOP_SETATTR would prevent the client from doing it even though 5120 * it should be allowed to do so. To get around this, we do the 5121 * access checking for ourselves and use VOP_SPACE which doesn't 5122 * do the access checking. 5123 * Also the client should not be allowed to change the file 5124 * size if there is a conflicting non-blocking mandatory lock in 5125 * the region of the change. 5126 */ 5127 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5128 u_offset_t offset; 5129 ssize_t length; 5130 5131 /* 5132 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5133 * before returning, sarg.vap->va_mask is used to 5134 * generate the setattr reply bitmap. We also clear 5135 * AT_SIZE below before calling VOP_SPACE. For both 5136 * of these cases, the va_mask needs to be saved here 5137 * and restored after calling VOP_SETATTR. 5138 */ 5139 saved_mask = sarg.vap->va_mask; 5140 5141 /* 5142 * Check any possible conflict due to NBMAND locks. 5143 * Get into critical region before VOP_GETATTR, so the 5144 * size attribute is valid when checking conflicts. 5145 */ 5146 if (nbl_need_check(vp)) { 5147 nbl_start_crit(vp, RW_READER); 5148 in_crit = 1; 5149 } 5150 5151 bva.va_mask = AT_UID|AT_SIZE; 5152 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5153 status = puterrno4(error); 5154 goto done; 5155 } 5156 5157 if (in_crit) { 5158 if (sarg.vap->va_size < bva.va_size) { 5159 offset = sarg.vap->va_size; 5160 length = bva.va_size - sarg.vap->va_size; 5161 } else { 5162 offset = bva.va_size; 5163 length = sarg.vap->va_size - bva.va_size; 5164 } 5165 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5166 &ct)) { 5167 status = NFS4ERR_LOCKED; 5168 goto done; 5169 } 5170 } 5171 5172 if (crgetuid(cr) == bva.va_uid) { 5173 sarg.vap->va_mask &= ~AT_SIZE; 5174 bf.l_type = F_WRLCK; 5175 bf.l_whence = 0; 5176 bf.l_start = (off64_t)sarg.vap->va_size; 5177 bf.l_len = 0; 5178 bf.l_sysid = 0; 5179 bf.l_pid = 0; 5180 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5181 (offset_t)sarg.vap->va_size, cr, &ct); 5182 } 5183 } 5184 5185 if (!error && sarg.vap->va_mask != 0) 5186 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5187 5188 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5189 if (saved_mask & AT_SIZE) 5190 sarg.vap->va_mask |= AT_SIZE; 5191 5192 /* 5193 * If an ACL was being set, it has been delayed until now, 5194 * in order to set the mode (via the VOP_SETATTR() above) first. 5195 */ 5196 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5197 int i; 5198 5199 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5200 if (ntov.amap[i] == FATTR4_ACL) 5201 break; 5202 if (i < NFS4_MAXNUM_ATTRS) { 5203 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5204 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5205 if (error == 0) { 5206 *resp |= FATTR4_ACL_MASK; 5207 } else if (error == ENOTSUP) { 5208 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5209 status = NFS4ERR_ATTRNOTSUPP; 5210 goto done; 5211 } 5212 } else { 5213 NFS4_DEBUG(rfs4_debug, 5214 (CE_NOTE, "do_rfs4_op_setattr: " 5215 "unable to find ACL in fattr4")); 5216 error = EINVAL; 5217 } 5218 } 5219 5220 if (error) { 5221 /* check if a monitor detected a delegation conflict */ 5222 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5223 status = NFS4ERR_DELAY; 5224 else 5225 status = puterrno4(error); 5226 5227 /* 5228 * Set the response bitmap when setattr failed. 5229 * If VOP_SETATTR partially succeeded, test by doing a 5230 * VOP_GETATTR on the object and comparing the data 5231 * to the setattr arguments. 5232 */ 5233 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5234 } else { 5235 /* 5236 * Force modified metadata out to stable storage. 5237 */ 5238 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5239 /* 5240 * Set response bitmap 5241 */ 5242 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5243 } 5244 5245 /* Return early and already have a NFSv4 error */ 5246 done: 5247 /* 5248 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5249 * conversion sets both readable and writeable NFS4 attrs 5250 * for AT_MTIME and AT_ATIME. The line below masks out 5251 * unrequested attrs from the setattr result bitmap. This 5252 * is placed after the done: label to catch the ATTRNOTSUP 5253 * case. 5254 */ 5255 *resp &= fattrp->attrmask; 5256 5257 if (in_crit) 5258 nbl_end_crit(vp); 5259 5260 nfs4_ntov_table_free(&ntov, &sarg); 5261 5262 return (status); 5263 } 5264 5265 /* ARGSUSED */ 5266 static void 5267 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5268 struct compound_state *cs) 5269 { 5270 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5271 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5272 bslabel_t *clabel; 5273 5274 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5275 SETATTR4args *, args); 5276 5277 if (cs->vp == NULL) { 5278 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5279 goto out; 5280 } 5281 5282 /* 5283 * If there is an unshared filesystem mounted on this vnode, 5284 * do not allow to setattr on this vnode. 5285 */ 5286 if (vn_ismntpt(cs->vp)) { 5287 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5288 goto out; 5289 } 5290 5291 resp->attrsset = 0; 5292 5293 if (rdonly4(cs->exi, cs->vp, req)) { 5294 *cs->statusp = resp->status = NFS4ERR_ROFS; 5295 goto out; 5296 } 5297 5298 /* check label before setting attributes */ 5299 if (is_system_labeled()) { 5300 ASSERT(req->rq_label != NULL); 5301 clabel = req->rq_label; 5302 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5303 "got client label from request(1)", 5304 struct svc_req *, req); 5305 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5306 if (!do_rfs_label_check(clabel, cs->vp, 5307 EQUALITY_CHECK)) { 5308 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5309 goto out; 5310 } 5311 } 5312 } 5313 5314 *cs->statusp = resp->status = 5315 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5316 &args->stateid); 5317 5318 out: 5319 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5320 SETATTR4res *, resp); 5321 } 5322 5323 /* ARGSUSED */ 5324 static void 5325 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5326 struct compound_state *cs) 5327 { 5328 /* 5329 * verify and nverify are exactly the same, except that nverify 5330 * succeeds when some argument changed, and verify succeeds when 5331 * when none changed. 5332 */ 5333 5334 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5335 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5336 5337 int error; 5338 struct nfs4_svgetit_arg sarg; 5339 struct statvfs64 sb; 5340 struct nfs4_ntov_table ntov; 5341 5342 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5343 VERIFY4args *, args); 5344 5345 if (cs->vp == NULL) { 5346 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5347 goto out; 5348 } 5349 5350 sarg.sbp = &sb; 5351 nfs4_ntov_table_init(&ntov); 5352 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5353 &sarg, &ntov, NFS4ATTR_VERIT); 5354 if (resp->status != NFS4_OK) { 5355 /* 5356 * do_rfs4_set_attrs will try to verify systemwide attrs, 5357 * so could return -1 for "no match". 5358 */ 5359 if (resp->status == -1) 5360 resp->status = NFS4ERR_NOT_SAME; 5361 goto done; 5362 } 5363 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5364 switch (error) { 5365 case 0: 5366 resp->status = NFS4_OK; 5367 break; 5368 case -1: 5369 resp->status = NFS4ERR_NOT_SAME; 5370 break; 5371 default: 5372 resp->status = puterrno4(error); 5373 break; 5374 } 5375 done: 5376 *cs->statusp = resp->status; 5377 nfs4_ntov_table_free(&ntov, &sarg); 5378 out: 5379 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5380 VERIFY4res *, resp); 5381 } 5382 5383 /* ARGSUSED */ 5384 static void 5385 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5386 struct compound_state *cs) 5387 { 5388 /* 5389 * verify and nverify are exactly the same, except that nverify 5390 * succeeds when some argument changed, and verify succeeds when 5391 * when none changed. 5392 */ 5393 5394 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5395 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5396 5397 int error; 5398 struct nfs4_svgetit_arg sarg; 5399 struct statvfs64 sb; 5400 struct nfs4_ntov_table ntov; 5401 5402 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5403 NVERIFY4args *, args); 5404 5405 if (cs->vp == NULL) { 5406 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5407 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5408 NVERIFY4res *, resp); 5409 return; 5410 } 5411 sarg.sbp = &sb; 5412 nfs4_ntov_table_init(&ntov); 5413 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5414 &sarg, &ntov, NFS4ATTR_VERIT); 5415 if (resp->status != NFS4_OK) { 5416 /* 5417 * do_rfs4_set_attrs will try to verify systemwide attrs, 5418 * so could return -1 for "no match". 5419 */ 5420 if (resp->status == -1) 5421 resp->status = NFS4_OK; 5422 goto done; 5423 } 5424 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5425 switch (error) { 5426 case 0: 5427 resp->status = NFS4ERR_SAME; 5428 break; 5429 case -1: 5430 resp->status = NFS4_OK; 5431 break; 5432 default: 5433 resp->status = puterrno4(error); 5434 break; 5435 } 5436 done: 5437 *cs->statusp = resp->status; 5438 nfs4_ntov_table_free(&ntov, &sarg); 5439 5440 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5441 NVERIFY4res *, resp); 5442 } 5443 5444 /* 5445 * XXX - This should live in an NFS header file. 5446 */ 5447 #define MAX_IOVECS 12 5448 5449 /* ARGSUSED */ 5450 static void 5451 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5452 struct compound_state *cs) 5453 { 5454 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5455 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5456 int error; 5457 vnode_t *vp; 5458 struct vattr bva; 5459 u_offset_t rlimit; 5460 struct uio uio; 5461 struct iovec iov[MAX_IOVECS]; 5462 struct iovec *iovp; 5463 int iovcnt; 5464 int ioflag; 5465 cred_t *savecred, *cr; 5466 bool_t *deleg = &cs->deleg; 5467 nfsstat4 stat; 5468 int in_crit = 0; 5469 caller_context_t ct; 5470 5471 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5472 WRITE4args *, args); 5473 5474 vp = cs->vp; 5475 if (vp == NULL) { 5476 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5477 goto out; 5478 } 5479 if (cs->access == CS_ACCESS_DENIED) { 5480 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5481 goto out; 5482 } 5483 5484 cr = cs->cr; 5485 5486 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5487 deleg, TRUE, &ct)) != NFS4_OK) { 5488 *cs->statusp = resp->status = stat; 5489 goto out; 5490 } 5491 5492 /* 5493 * We have to enter the critical region before calling VOP_RWLOCK 5494 * to avoid a deadlock with ufs. 5495 */ 5496 if (nbl_need_check(vp)) { 5497 nbl_start_crit(vp, RW_READER); 5498 in_crit = 1; 5499 if (nbl_conflict(vp, NBL_WRITE, 5500 args->offset, args->data_len, 0, &ct)) { 5501 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5502 goto out; 5503 } 5504 } 5505 5506 bva.va_mask = AT_MODE | AT_UID; 5507 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5508 5509 /* 5510 * If we can't get the attributes, then we can't do the 5511 * right access checking. So, we'll fail the request. 5512 */ 5513 if (error) { 5514 *cs->statusp = resp->status = puterrno4(error); 5515 goto out; 5516 } 5517 5518 if (rdonly4(cs->exi, cs->vp, req)) { 5519 *cs->statusp = resp->status = NFS4ERR_ROFS; 5520 goto out; 5521 } 5522 5523 if (vp->v_type != VREG) { 5524 *cs->statusp = resp->status = 5525 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5526 goto out; 5527 } 5528 5529 if (crgetuid(cr) != bva.va_uid && 5530 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5531 *cs->statusp = resp->status = puterrno4(error); 5532 goto out; 5533 } 5534 5535 if (MANDLOCK(vp, bva.va_mode)) { 5536 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5537 goto out; 5538 } 5539 5540 if (args->data_len == 0) { 5541 *cs->statusp = resp->status = NFS4_OK; 5542 resp->count = 0; 5543 resp->committed = args->stable; 5544 resp->writeverf = Write4verf; 5545 goto out; 5546 } 5547 5548 if (args->mblk != NULL) { 5549 mblk_t *m; 5550 uint_t bytes, round_len; 5551 5552 iovcnt = 0; 5553 bytes = 0; 5554 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5555 for (m = args->mblk; 5556 m != NULL && bytes < round_len; 5557 m = m->b_cont) { 5558 iovcnt++; 5559 bytes += MBLKL(m); 5560 } 5561 #ifdef DEBUG 5562 /* should have ended on an mblk boundary */ 5563 if (bytes != round_len) { 5564 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5565 bytes, round_len, args->data_len); 5566 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5567 (void *)args->mblk, (void *)m); 5568 ASSERT(bytes == round_len); 5569 } 5570 #endif 5571 if (iovcnt <= MAX_IOVECS) { 5572 iovp = iov; 5573 } else { 5574 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5575 } 5576 mblk_to_iov(args->mblk, iovcnt, iovp); 5577 } else if (args->rlist != NULL) { 5578 iovcnt = 1; 5579 iovp = iov; 5580 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5581 iovp->iov_len = args->data_len; 5582 } else { 5583 iovcnt = 1; 5584 iovp = iov; 5585 iovp->iov_base = args->data_val; 5586 iovp->iov_len = args->data_len; 5587 } 5588 5589 uio.uio_iov = iovp; 5590 uio.uio_iovcnt = iovcnt; 5591 5592 uio.uio_segflg = UIO_SYSSPACE; 5593 uio.uio_extflg = UIO_COPY_DEFAULT; 5594 uio.uio_loffset = args->offset; 5595 uio.uio_resid = args->data_len; 5596 uio.uio_llimit = curproc->p_fsz_ctl; 5597 rlimit = uio.uio_llimit - args->offset; 5598 if (rlimit < (u_offset_t)uio.uio_resid) 5599 uio.uio_resid = (int)rlimit; 5600 5601 if (args->stable == UNSTABLE4) 5602 ioflag = 0; 5603 else if (args->stable == FILE_SYNC4) 5604 ioflag = FSYNC; 5605 else if (args->stable == DATA_SYNC4) 5606 ioflag = FDSYNC; 5607 else { 5608 if (iovp != iov) 5609 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5610 *cs->statusp = resp->status = NFS4ERR_INVAL; 5611 goto out; 5612 } 5613 5614 /* 5615 * We're changing creds because VM may fault and we need 5616 * the cred of the current thread to be used if quota 5617 * checking is enabled. 5618 */ 5619 savecred = curthread->t_cred; 5620 curthread->t_cred = cr; 5621 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5622 curthread->t_cred = savecred; 5623 5624 if (iovp != iov) 5625 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5626 5627 if (error) { 5628 *cs->statusp = resp->status = puterrno4(error); 5629 goto out; 5630 } 5631 5632 *cs->statusp = resp->status = NFS4_OK; 5633 resp->count = args->data_len - uio.uio_resid; 5634 5635 if (ioflag == 0) 5636 resp->committed = UNSTABLE4; 5637 else 5638 resp->committed = FILE_SYNC4; 5639 5640 resp->writeverf = Write4verf; 5641 5642 out: 5643 if (in_crit) 5644 nbl_end_crit(vp); 5645 5646 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5647 WRITE4res *, resp); 5648 } 5649 5650 5651 /* XXX put in a header file */ 5652 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5653 5654 void 5655 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5656 struct svc_req *req, cred_t *cr, int *rv) 5657 { 5658 uint_t i; 5659 struct compound_state cs; 5660 5661 if (rv != NULL) 5662 *rv = 0; 5663 rfs4_init_compound_state(&cs); 5664 /* 5665 * Form a reply tag by copying over the reqeuest tag. 5666 */ 5667 resp->tag.utf8string_val = 5668 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5669 resp->tag.utf8string_len = args->tag.utf8string_len; 5670 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5671 resp->tag.utf8string_len); 5672 5673 cs.statusp = &resp->status; 5674 cs.req = req; 5675 5676 /* 5677 * XXX for now, minorversion should be zero 5678 */ 5679 if (args->minorversion != NFS4_MINORVERSION) { 5680 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5681 &cs, COMPOUND4args *, args); 5682 resp->array_len = 0; 5683 resp->array = NULL; 5684 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5685 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5686 &cs, COMPOUND4res *, resp); 5687 return; 5688 } 5689 5690 ASSERT(exi == NULL); 5691 ASSERT(cr == NULL); 5692 5693 cr = crget(); 5694 ASSERT(cr != NULL); 5695 5696 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5697 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5698 &cs, COMPOUND4args *, args); 5699 crfree(cr); 5700 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5701 &cs, COMPOUND4res *, resp); 5702 svcerr_badcred(req->rq_xprt); 5703 if (rv != NULL) 5704 *rv = 1; 5705 return; 5706 } 5707 resp->array_len = args->array_len; 5708 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5709 KM_SLEEP); 5710 5711 cs.basecr = cr; 5712 5713 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5714 COMPOUND4args *, args); 5715 5716 /* 5717 * For now, NFS4 compound processing must be protected by 5718 * exported_lock because it can access more than one exportinfo 5719 * per compound and share/unshare can now change multiple 5720 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5721 * per proc (excluding public exinfo), and exi_count design 5722 * is sufficient to protect concurrent execution of NFS2/3 5723 * ops along with unexport. This lock will be removed as 5724 * part of the NFSv4 phase 2 namespace redesign work. 5725 */ 5726 rw_enter(&exported_lock, RW_READER); 5727 5728 /* 5729 * If this is the first compound we've seen, we need to start all 5730 * new instances' grace periods. 5731 */ 5732 if (rfs4_seen_first_compound == 0) { 5733 rfs4_grace_start_new(); 5734 /* 5735 * This must be set after rfs4_grace_start_new(), otherwise 5736 * another thread could proceed past here before the former 5737 * is finished. 5738 */ 5739 rfs4_seen_first_compound = 1; 5740 } 5741 5742 for (i = 0; i < args->array_len && cs.cont; i++) { 5743 nfs_argop4 *argop; 5744 nfs_resop4 *resop; 5745 uint_t op; 5746 5747 argop = &args->array[i]; 5748 resop = &resp->array[i]; 5749 resop->resop = argop->argop; 5750 op = (uint_t)resop->resop; 5751 5752 if (op < rfsv4disp_cnt) { 5753 /* 5754 * Count the individual ops here; NULL and COMPOUND 5755 * are counted in common_dispatch() 5756 */ 5757 rfsproccnt_v4_ptr[op].value.ui64++; 5758 5759 NFS4_DEBUG(rfs4_debug > 1, 5760 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5761 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5762 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5763 rfs4_op_string[op], *cs.statusp)); 5764 if (*cs.statusp != NFS4_OK) 5765 cs.cont = FALSE; 5766 } else { 5767 /* 5768 * This is effectively dead code since XDR code 5769 * will have already returned BADXDR if op doesn't 5770 * decode to legal value. This only done for a 5771 * day when XDR code doesn't verify v4 opcodes. 5772 */ 5773 op = OP_ILLEGAL; 5774 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5775 5776 rfs4_op_illegal(argop, resop, req, &cs); 5777 cs.cont = FALSE; 5778 } 5779 5780 /* 5781 * If not at last op, and if we are to stop, then 5782 * compact the results array. 5783 */ 5784 if ((i + 1) < args->array_len && !cs.cont) { 5785 nfs_resop4 *new_res = kmem_alloc( 5786 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5787 bcopy(resp->array, 5788 new_res, (i+1) * sizeof (nfs_resop4)); 5789 kmem_free(resp->array, 5790 args->array_len * sizeof (nfs_resop4)); 5791 5792 resp->array_len = i + 1; 5793 resp->array = new_res; 5794 } 5795 } 5796 5797 rw_exit(&exported_lock); 5798 5799 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5800 COMPOUND4res *, resp); 5801 5802 if (cs.vp) 5803 VN_RELE(cs.vp); 5804 if (cs.saved_vp) 5805 VN_RELE(cs.saved_vp); 5806 if (cs.saved_fh.nfs_fh4_val) 5807 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5808 5809 if (cs.basecr) 5810 crfree(cs.basecr); 5811 if (cs.cr) 5812 crfree(cs.cr); 5813 /* 5814 * done with this compound request, free the label 5815 */ 5816 5817 if (req->rq_label != NULL) { 5818 kmem_free(req->rq_label, sizeof (bslabel_t)); 5819 req->rq_label = NULL; 5820 } 5821 } 5822 5823 /* 5824 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5825 * XXX zero out the tag and array values. Need to investigate why the 5826 * XXX calls occur, but at least prevent the panic for now. 5827 */ 5828 void 5829 rfs4_compound_free(COMPOUND4res *resp) 5830 { 5831 uint_t i; 5832 5833 if (resp->tag.utf8string_val) { 5834 UTF8STRING_FREE(resp->tag) 5835 } 5836 5837 for (i = 0; i < resp->array_len; i++) { 5838 nfs_resop4 *resop; 5839 uint_t op; 5840 5841 resop = &resp->array[i]; 5842 op = (uint_t)resop->resop; 5843 if (op < rfsv4disp_cnt) { 5844 (*rfsv4disptab[op].dis_resfree)(resop); 5845 } 5846 } 5847 if (resp->array != NULL) { 5848 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5849 } 5850 } 5851 5852 /* 5853 * Process the value of the compound request rpc flags, as a bit-AND 5854 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5855 */ 5856 void 5857 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5858 { 5859 int i; 5860 int flag = RPC_ALL; 5861 5862 for (i = 0; flag && i < args->array_len; i++) { 5863 uint_t op; 5864 5865 op = (uint_t)args->array[i].argop; 5866 5867 if (op < rfsv4disp_cnt) 5868 flag &= rfsv4disptab[op].dis_flags; 5869 else 5870 flag = 0; 5871 } 5872 *flagp = flag; 5873 } 5874 5875 nfsstat4 5876 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5877 { 5878 nfsstat4 e; 5879 5880 rfs4_dbe_lock(cp->dbe); 5881 5882 if (cp->sysidt != LM_NOSYSID) { 5883 *sp = cp->sysidt; 5884 e = NFS4_OK; 5885 5886 } else if ((cp->sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 5887 *sp = cp->sysidt; 5888 e = NFS4_OK; 5889 5890 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 5891 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 5892 } else 5893 e = NFS4ERR_DELAY; 5894 5895 rfs4_dbe_unlock(cp->dbe); 5896 return (e); 5897 } 5898 5899 #if defined(DEBUG) && ! defined(lint) 5900 static void lock_print(char *str, int operation, struct flock64 *flk) 5901 { 5902 char *op, *type; 5903 5904 switch (operation) { 5905 case F_GETLK: op = "F_GETLK"; 5906 break; 5907 case F_SETLK: op = "F_SETLK"; 5908 break; 5909 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 5910 break; 5911 default: op = "F_UNKNOWN"; 5912 break; 5913 } 5914 switch (flk->l_type) { 5915 case F_UNLCK: type = "F_UNLCK"; 5916 break; 5917 case F_RDLCK: type = "F_RDLCK"; 5918 break; 5919 case F_WRLCK: type = "F_WRLCK"; 5920 break; 5921 default: type = "F_UNKNOWN"; 5922 break; 5923 } 5924 5925 ASSERT(flk->l_whence == 0); 5926 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 5927 str, op, type, (longlong_t)flk->l_start, 5928 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 5929 } 5930 5931 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 5932 #else 5933 #define LOCK_PRINT(d, s, t, f) 5934 #endif 5935 5936 /*ARGSUSED*/ 5937 static bool_t 5938 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 5939 { 5940 return (TRUE); 5941 } 5942 5943 /* 5944 * Look up the pathname using the vp in cs as the directory vnode. 5945 * cs->vp will be the vnode for the file on success 5946 */ 5947 5948 static nfsstat4 5949 rfs4_lookup(component4 *component, struct svc_req *req, 5950 struct compound_state *cs) 5951 { 5952 char *nm; 5953 uint32_t len; 5954 nfsstat4 status; 5955 5956 if (cs->vp == NULL) { 5957 return (NFS4ERR_NOFILEHANDLE); 5958 } 5959 if (cs->vp->v_type != VDIR) { 5960 return (NFS4ERR_NOTDIR); 5961 } 5962 5963 if (!utf8_dir_verify(component)) 5964 return (NFS4ERR_INVAL); 5965 5966 nm = utf8_to_fn(component, &len, NULL); 5967 if (nm == NULL) { 5968 return (NFS4ERR_INVAL); 5969 } 5970 5971 if (len > MAXNAMELEN) { 5972 kmem_free(nm, len); 5973 return (NFS4ERR_NAMETOOLONG); 5974 } 5975 5976 status = do_rfs4_op_lookup(nm, len, req, cs); 5977 5978 kmem_free(nm, len); 5979 5980 return (status); 5981 } 5982 5983 static nfsstat4 5984 rfs4_lookupfile(component4 *component, struct svc_req *req, 5985 struct compound_state *cs, uint32_t access, 5986 change_info4 *cinfo) 5987 { 5988 nfsstat4 status; 5989 vnode_t *dvp = cs->vp; 5990 vattr_t bva, ava, fva; 5991 int error; 5992 5993 /* Get "before" change value */ 5994 bva.va_mask = AT_CTIME|AT_SEQ; 5995 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 5996 if (error) 5997 return (puterrno4(error)); 5998 5999 /* rfs4_lookup may VN_RELE directory */ 6000 VN_HOLD(dvp); 6001 6002 status = rfs4_lookup(component, req, cs); 6003 if (status != NFS4_OK) { 6004 VN_RELE(dvp); 6005 return (status); 6006 } 6007 6008 /* 6009 * Get "after" change value, if it fails, simply return the 6010 * before value. 6011 */ 6012 ava.va_mask = AT_CTIME|AT_SEQ; 6013 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6014 ava.va_ctime = bva.va_ctime; 6015 ava.va_seq = 0; 6016 } 6017 VN_RELE(dvp); 6018 6019 /* 6020 * Validate the file is a file 6021 */ 6022 fva.va_mask = AT_TYPE|AT_MODE; 6023 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6024 if (error) 6025 return (puterrno4(error)); 6026 6027 if (fva.va_type != VREG) { 6028 if (fva.va_type == VDIR) 6029 return (NFS4ERR_ISDIR); 6030 if (fva.va_type == VLNK) 6031 return (NFS4ERR_SYMLINK); 6032 return (NFS4ERR_INVAL); 6033 } 6034 6035 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6036 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6037 6038 /* 6039 * It is undefined if VOP_LOOKUP will change va_seq, so 6040 * cinfo.atomic = TRUE only if we have 6041 * non-zero va_seq's, and they have not changed. 6042 */ 6043 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6044 cinfo->atomic = TRUE; 6045 else 6046 cinfo->atomic = FALSE; 6047 6048 /* Check for mandatory locking */ 6049 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6050 return (check_open_access(access, cs, req)); 6051 } 6052 6053 static nfsstat4 6054 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6055 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6056 { 6057 int error; 6058 nfsstat4 status = NFS4_OK; 6059 vattr_t va; 6060 6061 tryagain: 6062 6063 /* 6064 * The file open mode used is VWRITE. If the client needs 6065 * some other semantic, then it should do the access checking 6066 * itself. It would have been nice to have the file open mode 6067 * passed as part of the arguments. 6068 */ 6069 6070 *created = TRUE; 6071 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6072 6073 if (error) { 6074 *created = FALSE; 6075 6076 /* 6077 * If we got something other than file already exists 6078 * then just return this error. Otherwise, we got 6079 * EEXIST. If we were doing a GUARDED create, then 6080 * just return this error. Otherwise, we need to 6081 * make sure that this wasn't a duplicate of an 6082 * exclusive create request. 6083 * 6084 * The assumption is made that a non-exclusive create 6085 * request will never return EEXIST. 6086 */ 6087 6088 if (error != EEXIST || mode == GUARDED4) { 6089 status = puterrno4(error); 6090 return (status); 6091 } 6092 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6093 NULL, NULL, NULL); 6094 6095 if (error) { 6096 /* 6097 * We couldn't find the file that we thought that 6098 * we just created. So, we'll just try creating 6099 * it again. 6100 */ 6101 if (error == ENOENT) 6102 goto tryagain; 6103 6104 status = puterrno4(error); 6105 return (status); 6106 } 6107 6108 if (mode == UNCHECKED4) { 6109 /* existing object must be regular file */ 6110 if ((*vpp)->v_type != VREG) { 6111 if ((*vpp)->v_type == VDIR) 6112 status = NFS4ERR_ISDIR; 6113 else if ((*vpp)->v_type == VLNK) 6114 status = NFS4ERR_SYMLINK; 6115 else 6116 status = NFS4ERR_INVAL; 6117 VN_RELE(*vpp); 6118 return (status); 6119 } 6120 6121 return (NFS4_OK); 6122 } 6123 6124 /* Check for duplicate request */ 6125 ASSERT(mtime != 0); 6126 va.va_mask = AT_MTIME; 6127 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6128 if (!error) { 6129 /* We found the file */ 6130 if (va.va_mtime.tv_sec != mtime->tv_sec || 6131 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6132 /* but its not our creation */ 6133 VN_RELE(*vpp); 6134 return (NFS4ERR_EXIST); 6135 } 6136 *created = TRUE; /* retrans of create == created */ 6137 return (NFS4_OK); 6138 } 6139 VN_RELE(*vpp); 6140 return (NFS4ERR_EXIST); 6141 } 6142 6143 return (NFS4_OK); 6144 } 6145 6146 static nfsstat4 6147 check_open_access(uint32_t access, 6148 struct compound_state *cs, struct svc_req *req) 6149 { 6150 int error; 6151 vnode_t *vp; 6152 bool_t readonly; 6153 cred_t *cr = cs->cr; 6154 6155 /* For now we don't allow mandatory locking as per V2/V3 */ 6156 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6157 return (NFS4ERR_ACCESS); 6158 } 6159 6160 vp = cs->vp; 6161 ASSERT(cr != NULL && vp->v_type == VREG); 6162 6163 /* 6164 * If the file system is exported read only and we are trying 6165 * to open for write, then return NFS4ERR_ROFS 6166 */ 6167 6168 readonly = rdonly4(cs->exi, cs->vp, req); 6169 6170 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6171 return (NFS4ERR_ROFS); 6172 6173 if (access & OPEN4_SHARE_ACCESS_READ) { 6174 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6175 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6176 return (NFS4ERR_ACCESS); 6177 } 6178 } 6179 6180 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6181 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6182 if (error) 6183 return (NFS4ERR_ACCESS); 6184 } 6185 6186 return (NFS4_OK); 6187 } 6188 6189 static nfsstat4 6190 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6191 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6192 { 6193 struct nfs4_svgetit_arg sarg; 6194 struct nfs4_ntov_table ntov; 6195 6196 bool_t ntov_table_init = FALSE; 6197 struct statvfs64 sb; 6198 nfsstat4 status; 6199 vnode_t *vp; 6200 vattr_t bva, ava, iva, cva, *vap; 6201 vnode_t *dvp; 6202 timespec32_t *mtime; 6203 char *nm = NULL; 6204 uint_t buflen; 6205 bool_t created; 6206 bool_t setsize = FALSE; 6207 len_t reqsize; 6208 int error; 6209 bool_t trunc; 6210 caller_context_t ct; 6211 component4 *component; 6212 bslabel_t *clabel; 6213 struct sockaddr *ca; 6214 char *name = NULL; 6215 6216 sarg.sbp = &sb; 6217 6218 dvp = cs->vp; 6219 6220 /* Check if the file system is read only */ 6221 if (rdonly4(cs->exi, dvp, req)) 6222 return (NFS4ERR_ROFS); 6223 6224 /* check the label of including directory */ 6225 if (is_system_labeled()) { 6226 ASSERT(req->rq_label != NULL); 6227 clabel = req->rq_label; 6228 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6229 "got client label from request(1)", 6230 struct svc_req *, req); 6231 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6232 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK)) { 6233 return (NFS4ERR_ACCESS); 6234 } 6235 } 6236 } 6237 6238 /* 6239 * Get the last component of path name in nm. cs will reference 6240 * the including directory on success. 6241 */ 6242 component = &args->open_claim4_u.file; 6243 if (!utf8_dir_verify(component)) 6244 return (NFS4ERR_INVAL); 6245 6246 nm = utf8_to_fn(component, &buflen, NULL); 6247 6248 if (nm == NULL) 6249 return (NFS4ERR_RESOURCE); 6250 6251 if (buflen > MAXNAMELEN) { 6252 kmem_free(nm, buflen); 6253 return (NFS4ERR_NAMETOOLONG); 6254 } 6255 6256 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6257 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6258 if (error) { 6259 kmem_free(nm, buflen); 6260 return (puterrno4(error)); 6261 } 6262 6263 if (bva.va_type != VDIR) { 6264 kmem_free(nm, buflen); 6265 return (NFS4ERR_NOTDIR); 6266 } 6267 6268 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6269 6270 switch (args->mode) { 6271 case GUARDED4: 6272 /*FALLTHROUGH*/ 6273 case UNCHECKED4: 6274 nfs4_ntov_table_init(&ntov); 6275 ntov_table_init = TRUE; 6276 6277 *attrset = 0; 6278 status = do_rfs4_set_attrs(attrset, 6279 &args->createhow4_u.createattrs, 6280 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6281 6282 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6283 sarg.vap->va_type != VREG) { 6284 if (sarg.vap->va_type == VDIR) 6285 status = NFS4ERR_ISDIR; 6286 else if (sarg.vap->va_type == VLNK) 6287 status = NFS4ERR_SYMLINK; 6288 else 6289 status = NFS4ERR_INVAL; 6290 } 6291 6292 if (status != NFS4_OK) { 6293 kmem_free(nm, buflen); 6294 nfs4_ntov_table_free(&ntov, &sarg); 6295 *attrset = 0; 6296 return (status); 6297 } 6298 6299 vap = sarg.vap; 6300 vap->va_type = VREG; 6301 vap->va_mask |= AT_TYPE; 6302 6303 if ((vap->va_mask & AT_MODE) == 0) { 6304 vap->va_mask |= AT_MODE; 6305 vap->va_mode = (mode_t)0600; 6306 } 6307 6308 if (vap->va_mask & AT_SIZE) { 6309 6310 /* Disallow create with a non-zero size */ 6311 6312 if ((reqsize = sarg.vap->va_size) != 0) { 6313 kmem_free(nm, buflen); 6314 nfs4_ntov_table_free(&ntov, &sarg); 6315 *attrset = 0; 6316 return (NFS4ERR_INVAL); 6317 } 6318 setsize = TRUE; 6319 } 6320 break; 6321 6322 case EXCLUSIVE4: 6323 /* prohibit EXCL create of named attributes */ 6324 if (dvp->v_flag & V_XATTRDIR) { 6325 kmem_free(nm, buflen); 6326 *attrset = 0; 6327 return (NFS4ERR_INVAL); 6328 } 6329 6330 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6331 cva.va_type = VREG; 6332 /* 6333 * Ensure no time overflows. Assumes underlying 6334 * filesystem supports at least 32 bits. 6335 * Truncate nsec to usec resolution to allow valid 6336 * compares even if the underlying filesystem truncates. 6337 */ 6338 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6339 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6340 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6341 cva.va_mode = (mode_t)0; 6342 vap = &cva; 6343 break; 6344 } 6345 6346 /* If necessary, convert to UTF-8 for illbehaved clients */ 6347 6348 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6349 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6350 MAXPATHLEN + 1); 6351 6352 if (name == NULL) { 6353 kmem_free(nm, buflen); 6354 return (NFS4ERR_SERVERFAULT); 6355 } 6356 6357 status = create_vnode(dvp, name, vap, args->mode, mtime, 6358 cs->cr, &vp, &created); 6359 if (nm != name) 6360 kmem_free(name, MAXPATHLEN + 1); 6361 kmem_free(nm, buflen); 6362 6363 if (status != NFS4_OK) { 6364 if (ntov_table_init) 6365 nfs4_ntov_table_free(&ntov, &sarg); 6366 *attrset = 0; 6367 return (status); 6368 } 6369 6370 trunc = (setsize && !created); 6371 6372 if (args->mode != EXCLUSIVE4) { 6373 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6374 6375 /* 6376 * True verification that object was created with correct 6377 * attrs is impossible. The attrs could have been changed 6378 * immediately after object creation. If attributes did 6379 * not verify, the only recourse for the server is to 6380 * destroy the object. Maybe if some attrs (like gid) 6381 * are set incorrectly, the object should be destroyed; 6382 * however, seems bad as a default policy. Do we really 6383 * want to destroy an object over one of the times not 6384 * verifying correctly? For these reasons, the server 6385 * currently sets bits in attrset for createattrs 6386 * that were set; however, no verification is done. 6387 * 6388 * vmask_to_nmask accounts for vattr bits set on create 6389 * [do_rfs4_set_attrs() only sets resp bits for 6390 * non-vattr/vfs bits.] 6391 * Mask off any bits we set by default so as not to return 6392 * more attrset bits than were requested in createattrs 6393 */ 6394 if (created) { 6395 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6396 *attrset &= createmask; 6397 } else { 6398 /* 6399 * We did not create the vnode (we tried but it 6400 * already existed). In this case, the only createattr 6401 * that the spec allows the server to set is size, 6402 * and even then, it can only be set if it is 0. 6403 */ 6404 *attrset = 0; 6405 if (trunc) 6406 *attrset = FATTR4_SIZE_MASK; 6407 } 6408 } 6409 if (ntov_table_init) 6410 nfs4_ntov_table_free(&ntov, &sarg); 6411 6412 /* 6413 * Get the initial "after" sequence number, if it fails, 6414 * set to zero, time to before. 6415 */ 6416 iva.va_mask = AT_CTIME|AT_SEQ; 6417 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6418 iva.va_seq = 0; 6419 iva.va_ctime = bva.va_ctime; 6420 } 6421 6422 /* 6423 * create_vnode attempts to create the file exclusive, 6424 * if it already exists the VOP_CREATE will fail and 6425 * may not increase va_seq. It is atomic if 6426 * we haven't changed the directory, but if it has changed 6427 * we don't know what changed it. 6428 */ 6429 if (!created) { 6430 if (bva.va_seq && iva.va_seq && 6431 bva.va_seq == iva.va_seq) 6432 cinfo->atomic = TRUE; 6433 else 6434 cinfo->atomic = FALSE; 6435 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6436 } else { 6437 /* 6438 * The entry was created, we need to sync the 6439 * directory metadata. 6440 */ 6441 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6442 6443 /* 6444 * Get "after" change value, if it fails, simply return the 6445 * before value. 6446 */ 6447 ava.va_mask = AT_CTIME|AT_SEQ; 6448 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6449 ava.va_ctime = bva.va_ctime; 6450 ava.va_seq = 0; 6451 } 6452 6453 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6454 6455 /* 6456 * The cinfo->atomic = TRUE only if we have 6457 * non-zero va_seq's, and it has incremented by exactly one 6458 * during the create_vnode and it didn't 6459 * change during the VOP_FSYNC. 6460 */ 6461 if (bva.va_seq && iva.va_seq && ava.va_seq && 6462 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6463 cinfo->atomic = TRUE; 6464 else 6465 cinfo->atomic = FALSE; 6466 } 6467 6468 /* Check for mandatory locking and that the size gets set. */ 6469 cva.va_mask = AT_MODE; 6470 if (setsize) 6471 cva.va_mask |= AT_SIZE; 6472 6473 /* Assume the worst */ 6474 cs->mandlock = TRUE; 6475 6476 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6477 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6478 6479 /* 6480 * Truncate the file if necessary; this would be 6481 * the case for create over an existing file. 6482 */ 6483 6484 if (trunc) { 6485 int in_crit = 0; 6486 rfs4_file_t *fp; 6487 bool_t create = FALSE; 6488 6489 /* 6490 * We are writing over an existing file. 6491 * Check to see if we need to recall a delegation. 6492 */ 6493 rfs4_hold_deleg_policy(); 6494 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6495 if (rfs4_check_delegated_byfp(FWRITE, fp, 6496 (reqsize == 0), FALSE, FALSE, &clientid)) { 6497 rfs4_file_rele(fp); 6498 rfs4_rele_deleg_policy(); 6499 VN_RELE(vp); 6500 *attrset = 0; 6501 return (NFS4ERR_DELAY); 6502 } 6503 rfs4_file_rele(fp); 6504 } 6505 rfs4_rele_deleg_policy(); 6506 6507 if (nbl_need_check(vp)) { 6508 in_crit = 1; 6509 6510 ASSERT(reqsize == 0); 6511 6512 nbl_start_crit(vp, RW_READER); 6513 if (nbl_conflict(vp, NBL_WRITE, 0, 6514 cva.va_size, 0, NULL)) { 6515 in_crit = 0; 6516 nbl_end_crit(vp); 6517 VN_RELE(vp); 6518 *attrset = 0; 6519 return (NFS4ERR_ACCESS); 6520 } 6521 } 6522 ct.cc_sysid = 0; 6523 ct.cc_pid = 0; 6524 ct.cc_caller_id = nfs4_srv_caller_id; 6525 ct.cc_flags = CC_DONTBLOCK; 6526 6527 cva.va_mask = AT_SIZE; 6528 cva.va_size = reqsize; 6529 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6530 if (in_crit) 6531 nbl_end_crit(vp); 6532 } 6533 } 6534 6535 error = makefh4(&cs->fh, vp, cs->exi); 6536 6537 /* 6538 * Force modified data and metadata out to stable storage. 6539 */ 6540 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6541 6542 if (error) { 6543 VN_RELE(vp); 6544 *attrset = 0; 6545 return (puterrno4(error)); 6546 } 6547 6548 /* if parent dir is attrdir, set namedattr fh flag */ 6549 if (dvp->v_flag & V_XATTRDIR) 6550 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6551 6552 if (cs->vp) 6553 VN_RELE(cs->vp); 6554 6555 cs->vp = vp; 6556 6557 /* 6558 * if we did not create the file, we will need to check 6559 * the access bits on the file 6560 */ 6561 6562 if (!created) { 6563 if (setsize) 6564 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6565 status = check_open_access(args->share_access, cs, req); 6566 if (status != NFS4_OK) 6567 *attrset = 0; 6568 } 6569 return (status); 6570 } 6571 6572 /*ARGSUSED*/ 6573 static void 6574 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6575 rfs4_openowner_t *oo, delegreq_t deleg, 6576 uint32_t access, uint32_t deny, 6577 OPEN4res *resp, int deleg_cur) 6578 { 6579 /* XXX Currently not using req */ 6580 rfs4_state_t *state; 6581 rfs4_file_t *file; 6582 bool_t screate = TRUE; 6583 bool_t fcreate = TRUE; 6584 uint32_t amodes; 6585 uint32_t dmodes; 6586 rfs4_deleg_state_t *dsp; 6587 struct shrlock shr; 6588 struct shr_locowner shr_loco; 6589 sysid_t sysid; 6590 nfsstat4 status; 6591 caller_context_t ct; 6592 int fflags = 0; 6593 int recall = 0; 6594 int err; 6595 int cmd; 6596 6597 /* get the file struct and hold a lock on it during initial open */ 6598 file = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6599 if (file == NULL) { 6600 NFS4_DEBUG(rfs4_debug, 6601 (CE_NOTE, "rfs4_do_open: can't find file")); 6602 resp->status = NFS4ERR_SERVERFAULT; 6603 return; 6604 } 6605 6606 state = rfs4_findstate_by_owner_file(oo, file, &screate); 6607 if (state == NULL) { 6608 NFS4_DEBUG(rfs4_debug, 6609 (CE_NOTE, "rfs4_do_open: can't find state")); 6610 resp->status = NFS4ERR_RESOURCE; 6611 /* No need to keep any reference */ 6612 rfs4_file_rele_withunlock(file); 6613 return; 6614 } 6615 6616 /* try to get the sysid before continuing */ 6617 if ((status = rfs4_client_sysid(oo->client, &sysid)) != NFS4_OK) { 6618 resp->status = status; 6619 rfs4_file_rele(file); 6620 /* Not a fully formed open; "close" it */ 6621 if (screate == TRUE) 6622 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6623 rfs4_state_rele(state); 6624 return; 6625 } 6626 6627 /* Calculate the fflags for this OPEN. */ 6628 if (access & OPEN4_SHARE_ACCESS_READ) 6629 fflags |= FREAD; 6630 if (access & OPEN4_SHARE_ACCESS_WRITE) 6631 fflags |= FWRITE; 6632 6633 /* 6634 * Calculate the new deny and access mode that this open is adding to 6635 * the file for this open owner; 6636 */ 6637 dmodes = (deny & ~state->share_deny); 6638 amodes = (access & ~state->share_access); 6639 6640 /* 6641 * Check to see the client has already sent an open for this 6642 * open owner on this file with the same share/deny modes. 6643 * If so, we don't need to check for a conflict and we don't 6644 * need to add another shrlock. If not, then we need to 6645 * check for conflicts in deny and access before checking for 6646 * conflicts in delegation. We don't want to recall a 6647 * delegation based on an open that will eventually fail based 6648 * on shares modes. 6649 */ 6650 6651 if (dmodes || amodes) { 6652 shr.s_access = (short)access; 6653 shr.s_deny = (short)deny; 6654 shr.s_pid = rfs4_dbe_getid(oo->dbe); 6655 shr.s_sysid = sysid; 6656 shr_loco.sl_pid = shr.s_pid; 6657 shr_loco.sl_id = shr.s_sysid; 6658 shr.s_owner = (caddr_t)&shr_loco; 6659 shr.s_own_len = sizeof (shr_loco); 6660 6661 cmd = nbl_need_check(cs->vp) ? F_SHARE_NBMAND : F_SHARE; 6662 if ((err = vop_shrlock(cs->vp, cmd, &shr, fflags)) != 0) { 6663 6664 resp->status = err == EAGAIN ? 6665 NFS4ERR_SHARE_DENIED : puterrno4(err); 6666 6667 rfs4_file_rele(file); 6668 /* Not a fully formed open; "close" it */ 6669 if (screate == TRUE) 6670 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6671 rfs4_state_rele(state); 6672 return; 6673 } 6674 } 6675 6676 rfs4_dbe_lock(state->dbe); 6677 rfs4_dbe_lock(file->dbe); 6678 6679 /* 6680 * Check to see if this file is delegated and if so, if a 6681 * recall needs to be done. 6682 */ 6683 if (rfs4_check_recall(state, access)) { 6684 rfs4_dbe_unlock(file->dbe); 6685 rfs4_dbe_unlock(state->dbe); 6686 rfs4_recall_deleg(file, FALSE, state->owner->client); 6687 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6688 rfs4_dbe_lock(state->dbe); 6689 rfs4_dbe_lock(file->dbe); 6690 /* Let's see if the delegation was returned */ 6691 if (rfs4_check_recall(state, access)) { 6692 rfs4_dbe_unlock(file->dbe); 6693 rfs4_dbe_unlock(state->dbe); 6694 rfs4_file_rele(file); 6695 rfs4_update_lease(state->owner->client); 6696 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6697 /* Not a fully formed open; "close" it */ 6698 if (screate == TRUE) 6699 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6700 rfs4_state_rele(state); 6701 resp->status = NFS4ERR_DELAY; 6702 return; 6703 } 6704 } 6705 /* 6706 * the share check passed and any delegation conflict has been 6707 * taken care of, now call vop_open. 6708 * if this is the first open then call vop_open with fflags. 6709 * if not, call vn_open_upgrade with just the upgrade flags. 6710 * 6711 * if the file has been opened already, it will have the current 6712 * access mode in the state struct. if it has no share access, then 6713 * this is a new open. 6714 * 6715 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6716 * call VOP_OPEN(), just do the open upgrade. 6717 */ 6718 if (((state->share_access & OPEN4_SHARE_ACCESS_BOTH) == 0) && 6719 !deleg_cur) { 6720 ct.cc_sysid = sysid; 6721 ct.cc_pid = shr.s_pid; 6722 ct.cc_caller_id = nfs4_srv_caller_id; 6723 ct.cc_flags = CC_DONTBLOCK; 6724 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6725 if (err) { 6726 rfs4_dbe_unlock(file->dbe); 6727 rfs4_dbe_unlock(state->dbe); 6728 rfs4_file_rele(file); 6729 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6730 /* Not a fully formed open; "close" it */ 6731 if (screate == TRUE) 6732 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6733 rfs4_state_rele(state); 6734 /* check if a monitor detected a delegation conflict */ 6735 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6736 resp->status = NFS4ERR_DELAY; 6737 else 6738 resp->status = NFS4ERR_SERVERFAULT; 6739 return; 6740 } 6741 } else { /* open upgrade */ 6742 /* 6743 * calculate the fflags for the new mode that is being added 6744 * by this upgrade. 6745 */ 6746 fflags = 0; 6747 if (amodes & OPEN4_SHARE_ACCESS_READ) 6748 fflags |= FREAD; 6749 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6750 fflags |= FWRITE; 6751 vn_open_upgrade(cs->vp, fflags); 6752 } 6753 6754 if (dmodes & OPEN4_SHARE_DENY_READ) 6755 file->deny_read++; 6756 if (dmodes & OPEN4_SHARE_DENY_WRITE) 6757 file->deny_write++; 6758 file->share_deny |= deny; 6759 state->share_deny |= deny; 6760 6761 if (amodes & OPEN4_SHARE_ACCESS_READ) 6762 file->access_read++; 6763 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6764 file->access_write++; 6765 file->share_access |= access; 6766 state->share_access |= access; 6767 6768 /* 6769 * Check for delegation here. if the deleg argument is not 6770 * DELEG_ANY, then this is a reclaim from a client and 6771 * we must honor the delegation requested. If necessary we can 6772 * set the recall flag. 6773 */ 6774 6775 dsp = rfs4_grant_delegation(deleg, state, &recall); 6776 6777 cs->deleg = (file->dinfo->dtype == OPEN_DELEGATE_WRITE); 6778 6779 next_stateid(&state->stateid); 6780 6781 resp->stateid = state->stateid.stateid; 6782 6783 rfs4_dbe_unlock(file->dbe); 6784 rfs4_dbe_unlock(state->dbe); 6785 6786 if (dsp) { 6787 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6788 rfs4_deleg_state_rele(dsp); 6789 } 6790 6791 rfs4_file_rele(file); 6792 rfs4_state_rele(state); 6793 6794 resp->status = NFS4_OK; 6795 } 6796 6797 /*ARGSUSED*/ 6798 static void 6799 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6800 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6801 { 6802 change_info4 *cinfo = &resp->cinfo; 6803 bitmap4 *attrset = &resp->attrset; 6804 6805 if (args->opentype == OPEN4_NOCREATE) 6806 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6807 req, cs, args->share_access, cinfo); 6808 else { 6809 /* inhibit delegation grants during exclusive create */ 6810 6811 if (args->mode == EXCLUSIVE4) 6812 rfs4_disable_delegation(); 6813 6814 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6815 oo->client->clientid); 6816 } 6817 6818 if (resp->status == NFS4_OK) { 6819 6820 /* cs->vp cs->fh now reference the desired file */ 6821 6822 rfs4_do_open(cs, req, oo, DELEG_ANY, args->share_access, 6823 args->share_deny, resp, 0); 6824 6825 /* 6826 * If rfs4_createfile set attrset, we must 6827 * clear this attrset before the response is copied. 6828 */ 6829 if (resp->status != NFS4_OK && resp->attrset) { 6830 resp->attrset = 0; 6831 } 6832 } 6833 else 6834 *cs->statusp = resp->status; 6835 6836 if (args->mode == EXCLUSIVE4) 6837 rfs4_enable_delegation(); 6838 } 6839 6840 /*ARGSUSED*/ 6841 static void 6842 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6843 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6844 { 6845 change_info4 *cinfo = &resp->cinfo; 6846 vattr_t va; 6847 vtype_t v_type = cs->vp->v_type; 6848 int error = 0; 6849 6850 /* Verify that we have a regular file */ 6851 if (v_type != VREG) { 6852 if (v_type == VDIR) 6853 resp->status = NFS4ERR_ISDIR; 6854 else if (v_type == VLNK) 6855 resp->status = NFS4ERR_SYMLINK; 6856 else 6857 resp->status = NFS4ERR_INVAL; 6858 return; 6859 } 6860 6861 va.va_mask = AT_MODE|AT_UID; 6862 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 6863 if (error) { 6864 resp->status = puterrno4(error); 6865 return; 6866 } 6867 6868 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 6869 6870 /* 6871 * Check if we have access to the file, Note the the file 6872 * could have originally been open UNCHECKED or GUARDED 6873 * with mode bits that will now fail, but there is nothing 6874 * we can really do about that except in the case that the 6875 * owner of the file is the one requesting the open. 6876 */ 6877 if (crgetuid(cs->cr) != va.va_uid) { 6878 resp->status = check_open_access(args->share_access, cs, req); 6879 if (resp->status != NFS4_OK) { 6880 return; 6881 } 6882 } 6883 6884 /* 6885 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 6886 */ 6887 cinfo->before = 0; 6888 cinfo->after = 0; 6889 cinfo->atomic = FALSE; 6890 6891 rfs4_do_open(cs, req, oo, 6892 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 6893 args->share_access, args->share_deny, resp, 0); 6894 } 6895 6896 static void 6897 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 6898 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6899 { 6900 int error; 6901 nfsstat4 status; 6902 stateid4 stateid = 6903 args->open_claim4_u.delegate_cur_info.delegate_stateid; 6904 rfs4_deleg_state_t *dsp; 6905 6906 /* 6907 * Find the state info from the stateid and confirm that the 6908 * file is delegated. If the state openowner is the same as 6909 * the supplied openowner we're done. If not, get the file 6910 * info from the found state info. Use that file info to 6911 * create the state for this lock owner. Note solaris doen't 6912 * really need the pathname to find the file. We may want to 6913 * lookup the pathname and make sure that the vp exist and 6914 * matches the vp in the file structure. However it is 6915 * possible that the pathname nolonger exists (local process 6916 * unlinks the file), so this may not be that useful. 6917 */ 6918 6919 status = rfs4_get_deleg_state(&stateid, &dsp); 6920 if (status != NFS4_OK) { 6921 resp->status = status; 6922 return; 6923 } 6924 6925 ASSERT(dsp->finfo->dinfo->dtype != OPEN_DELEGATE_NONE); 6926 6927 /* 6928 * New lock owner, create state. Since this was probably called 6929 * in response to a CB_RECALL we set deleg to DELEG_NONE 6930 */ 6931 6932 ASSERT(cs->vp != NULL); 6933 VN_RELE(cs->vp); 6934 VN_HOLD(dsp->finfo->vp); 6935 cs->vp = dsp->finfo->vp; 6936 6937 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 6938 rfs4_deleg_state_rele(dsp); 6939 *cs->statusp = resp->status = puterrno4(error); 6940 return; 6941 } 6942 6943 /* Mark progress for delegation returns */ 6944 dsp->finfo->dinfo->time_lastwrite = gethrestime_sec(); 6945 rfs4_deleg_state_rele(dsp); 6946 rfs4_do_open(cs, req, oo, DELEG_NONE, 6947 args->share_access, args->share_deny, resp, 1); 6948 } 6949 6950 /*ARGSUSED*/ 6951 static void 6952 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 6953 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6954 { 6955 /* 6956 * Lookup the pathname, it must already exist since this file 6957 * was delegated. 6958 * 6959 * Find the file and state info for this vp and open owner pair. 6960 * check that they are in fact delegated. 6961 * check that the state access and deny modes are the same. 6962 * 6963 * Return the delgation possibly seting the recall flag. 6964 */ 6965 rfs4_file_t *file; 6966 rfs4_state_t *state; 6967 bool_t create = FALSE; 6968 bool_t dcreate = FALSE; 6969 rfs4_deleg_state_t *dsp; 6970 nfsace4 *ace; 6971 6972 6973 /* Note we ignore oflags */ 6974 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 6975 req, cs, args->share_access, &resp->cinfo); 6976 6977 if (resp->status != NFS4_OK) { 6978 return; 6979 } 6980 6981 /* get the file struct and hold a lock on it during initial open */ 6982 file = rfs4_findfile_withlock(cs->vp, NULL, &create); 6983 if (file == NULL) { 6984 NFS4_DEBUG(rfs4_debug, 6985 (CE_NOTE, "rfs4_do_opendelprev: can't find file")); 6986 resp->status = NFS4ERR_SERVERFAULT; 6987 return; 6988 } 6989 6990 state = rfs4_findstate_by_owner_file(oo, file, &create); 6991 if (state == NULL) { 6992 NFS4_DEBUG(rfs4_debug, 6993 (CE_NOTE, "rfs4_do_opendelprev: can't find state")); 6994 resp->status = NFS4ERR_SERVERFAULT; 6995 rfs4_file_rele_withunlock(file); 6996 return; 6997 } 6998 6999 rfs4_dbe_lock(state->dbe); 7000 rfs4_dbe_lock(file->dbe); 7001 if (args->share_access != state->share_access || 7002 args->share_deny != state->share_deny || 7003 state->finfo->dinfo->dtype == OPEN_DELEGATE_NONE) { 7004 NFS4_DEBUG(rfs4_debug, 7005 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7006 rfs4_dbe_unlock(file->dbe); 7007 rfs4_dbe_unlock(state->dbe); 7008 rfs4_file_rele(file); 7009 rfs4_state_rele(state); 7010 resp->status = NFS4ERR_SERVERFAULT; 7011 return; 7012 } 7013 rfs4_dbe_unlock(file->dbe); 7014 rfs4_dbe_unlock(state->dbe); 7015 7016 dsp = rfs4_finddeleg(state, &dcreate); 7017 if (dsp == NULL) { 7018 rfs4_state_rele(state); 7019 rfs4_file_rele(file); 7020 resp->status = NFS4ERR_SERVERFAULT; 7021 return; 7022 } 7023 7024 next_stateid(&state->stateid); 7025 7026 resp->stateid = state->stateid.stateid; 7027 7028 resp->delegation.delegation_type = dsp->dtype; 7029 7030 if (dsp->dtype == OPEN_DELEGATE_READ) { 7031 open_read_delegation4 *rv = 7032 &resp->delegation.open_delegation4_u.read; 7033 7034 rv->stateid = dsp->delegid.stateid; 7035 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7036 ace = &rv->permissions; 7037 } else { 7038 open_write_delegation4 *rv = 7039 &resp->delegation.open_delegation4_u.write; 7040 7041 rv->stateid = dsp->delegid.stateid; 7042 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7043 ace = &rv->permissions; 7044 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7045 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7046 } 7047 7048 /* XXX For now */ 7049 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7050 ace->flag = 0; 7051 ace->access_mask = 0; 7052 ace->who.utf8string_len = 0; 7053 ace->who.utf8string_val = 0; 7054 7055 rfs4_deleg_state_rele(dsp); 7056 rfs4_state_rele(state); 7057 rfs4_file_rele(file); 7058 } 7059 7060 typedef enum { 7061 NFS4_CHKSEQ_OKAY = 0, 7062 NFS4_CHKSEQ_REPLAY = 1, 7063 NFS4_CHKSEQ_BAD = 2 7064 } rfs4_chkseq_t; 7065 7066 /* 7067 * Generic function for sequence number checks. 7068 */ 7069 static rfs4_chkseq_t 7070 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7071 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7072 { 7073 /* Same sequence ids and matching operations? */ 7074 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7075 if (copyres == TRUE) { 7076 rfs4_free_reply(resop); 7077 rfs4_copy_reply(resop, lastop); 7078 } 7079 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7080 "Replayed SEQID %d\n", seqid)); 7081 return (NFS4_CHKSEQ_REPLAY); 7082 } 7083 7084 /* If the incoming sequence is not the next expected then it is bad */ 7085 if (rqst_seq != seqid + 1) { 7086 if (rqst_seq == seqid) { 7087 NFS4_DEBUG(rfs4_debug, 7088 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7089 "but last op was %d current op is %d\n", 7090 lastop->resop, resop->resop)); 7091 return (NFS4_CHKSEQ_BAD); 7092 } 7093 NFS4_DEBUG(rfs4_debug, 7094 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7095 rqst_seq, seqid)); 7096 return (NFS4_CHKSEQ_BAD); 7097 } 7098 7099 /* Everything okay -- next expected */ 7100 return (NFS4_CHKSEQ_OKAY); 7101 } 7102 7103 7104 static rfs4_chkseq_t 7105 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7106 { 7107 rfs4_chkseq_t rc; 7108 7109 rfs4_dbe_lock(op->dbe); 7110 rc = rfs4_check_seqid(op->open_seqid, op->reply, seqid, resop, TRUE); 7111 rfs4_dbe_unlock(op->dbe); 7112 7113 if (rc == NFS4_CHKSEQ_OKAY) 7114 rfs4_update_lease(op->client); 7115 7116 return (rc); 7117 } 7118 7119 static rfs4_chkseq_t 7120 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, 7121 nfs_resop4 *resop) 7122 { 7123 rfs4_chkseq_t rc; 7124 7125 rfs4_dbe_lock(op->dbe); 7126 rc = rfs4_check_seqid(op->open_seqid, op->reply, 7127 olo_seqid, resop, FALSE); 7128 rfs4_dbe_unlock(op->dbe); 7129 7130 return (rc); 7131 } 7132 7133 static rfs4_chkseq_t 7134 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lp, nfs_resop4 *resop) 7135 { 7136 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7137 7138 rfs4_dbe_lock(lp->dbe); 7139 if (!lp->skip_seqid_check) 7140 rc = rfs4_check_seqid(lp->seqid, lp->reply, seqid, resop, TRUE); 7141 rfs4_dbe_unlock(lp->dbe); 7142 7143 return (rc); 7144 } 7145 7146 static void 7147 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7148 struct svc_req *req, struct compound_state *cs) 7149 { 7150 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7151 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7152 open_owner4 *owner = &args->owner; 7153 open_claim_type4 claim = args->claim; 7154 rfs4_client_t *cp; 7155 rfs4_openowner_t *oo; 7156 bool_t create; 7157 bool_t replay = FALSE; 7158 int can_reclaim; 7159 7160 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7161 OPEN4args *, args); 7162 7163 if (cs->vp == NULL) { 7164 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7165 goto end; 7166 } 7167 7168 /* 7169 * Need to check clientid and lease expiration first based on 7170 * error ordering and incrementing sequence id. 7171 */ 7172 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7173 if (cp == NULL) { 7174 *cs->statusp = resp->status = 7175 rfs4_check_clientid(&owner->clientid, 0); 7176 goto end; 7177 } 7178 7179 if (rfs4_lease_expired(cp)) { 7180 rfs4_client_close(cp); 7181 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7182 goto end; 7183 } 7184 can_reclaim = cp->can_reclaim; 7185 7186 /* 7187 * Find the open_owner for use from this point forward. Take 7188 * care in updating the sequence id based on the type of error 7189 * being returned. 7190 */ 7191 retry: 7192 create = TRUE; 7193 oo = rfs4_findopenowner(owner, &create, args->seqid); 7194 if (oo == NULL) { 7195 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 7196 rfs4_client_rele(cp); 7197 goto end; 7198 } 7199 7200 /* Hold off access to the sequence space while the open is done */ 7201 rfs4_sw_enter(&oo->oo_sw); 7202 7203 /* 7204 * If the open_owner existed before at the server, then check 7205 * the sequence id. 7206 */ 7207 if (!create && !oo->postpone_confirm) { 7208 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7209 case NFS4_CHKSEQ_BAD: 7210 if ((args->seqid > oo->open_seqid) && 7211 oo->need_confirm) { 7212 rfs4_free_opens(oo, TRUE, FALSE); 7213 rfs4_sw_exit(&oo->oo_sw); 7214 rfs4_openowner_rele(oo); 7215 goto retry; 7216 } 7217 resp->status = NFS4ERR_BAD_SEQID; 7218 goto out; 7219 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7220 replay = TRUE; 7221 goto out; 7222 default: 7223 break; 7224 } 7225 7226 /* 7227 * Sequence was ok and open owner exists 7228 * check to see if we have yet to see an 7229 * open_confirm. 7230 */ 7231 if (oo->need_confirm) { 7232 rfs4_free_opens(oo, TRUE, FALSE); 7233 rfs4_sw_exit(&oo->oo_sw); 7234 rfs4_openowner_rele(oo); 7235 goto retry; 7236 } 7237 } 7238 /* Grace only applies to regular-type OPENs */ 7239 if (rfs4_clnt_in_grace(cp) && 7240 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7241 *cs->statusp = resp->status = NFS4ERR_GRACE; 7242 goto out; 7243 } 7244 7245 /* 7246 * If previous state at the server existed then can_reclaim 7247 * will be set. If not reply NFS4ERR_NO_GRACE to the 7248 * client. 7249 */ 7250 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7251 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7252 goto out; 7253 } 7254 7255 7256 /* 7257 * Reject the open if the client has missed the grace period 7258 */ 7259 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7260 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7261 goto out; 7262 } 7263 7264 /* Couple of up-front bookkeeping items */ 7265 if (oo->need_confirm) { 7266 /* 7267 * If this is a reclaim OPEN then we should not ask 7268 * for a confirmation of the open_owner per the 7269 * protocol specification. 7270 */ 7271 if (claim == CLAIM_PREVIOUS) 7272 oo->need_confirm = FALSE; 7273 else 7274 resp->rflags |= OPEN4_RESULT_CONFIRM; 7275 } 7276 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7277 7278 /* 7279 * If there is an unshared filesystem mounted on this vnode, 7280 * do not allow to open/create in this directory. 7281 */ 7282 if (vn_ismntpt(cs->vp)) { 7283 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7284 goto out; 7285 } 7286 7287 /* 7288 * access must READ, WRITE, or BOTH. No access is invalid. 7289 * deny can be READ, WRITE, BOTH, or NONE. 7290 * bits not defined for access/deny are invalid. 7291 */ 7292 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7293 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7294 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7295 *cs->statusp = resp->status = NFS4ERR_INVAL; 7296 goto out; 7297 } 7298 7299 7300 /* 7301 * make sure attrset is zero before response is built. 7302 */ 7303 resp->attrset = 0; 7304 7305 switch (claim) { 7306 case CLAIM_NULL: 7307 rfs4_do_opennull(cs, req, args, oo, resp); 7308 break; 7309 case CLAIM_PREVIOUS: 7310 rfs4_do_openprev(cs, req, args, oo, resp); 7311 break; 7312 case CLAIM_DELEGATE_CUR: 7313 rfs4_do_opendelcur(cs, req, args, oo, resp); 7314 break; 7315 case CLAIM_DELEGATE_PREV: 7316 rfs4_do_opendelprev(cs, req, args, oo, resp); 7317 break; 7318 default: 7319 resp->status = NFS4ERR_INVAL; 7320 break; 7321 } 7322 7323 out: 7324 rfs4_client_rele(cp); 7325 7326 /* Catch sequence id handling here to make it a little easier */ 7327 switch (resp->status) { 7328 case NFS4ERR_BADXDR: 7329 case NFS4ERR_BAD_SEQID: 7330 case NFS4ERR_BAD_STATEID: 7331 case NFS4ERR_NOFILEHANDLE: 7332 case NFS4ERR_RESOURCE: 7333 case NFS4ERR_STALE_CLIENTID: 7334 case NFS4ERR_STALE_STATEID: 7335 /* 7336 * The protocol states that if any of these errors are 7337 * being returned, the sequence id should not be 7338 * incremented. Any other return requires an 7339 * increment. 7340 */ 7341 break; 7342 default: 7343 /* Always update the lease in this case */ 7344 rfs4_update_lease(oo->client); 7345 7346 /* Regular response - copy the result */ 7347 if (!replay) 7348 rfs4_update_open_resp(oo, resop, &cs->fh); 7349 7350 /* 7351 * REPLAY case: Only if the previous response was OK 7352 * do we copy the filehandle. If not OK, no 7353 * filehandle to copy. 7354 */ 7355 if (replay == TRUE && 7356 resp->status == NFS4_OK && 7357 oo->reply_fh.nfs_fh4_val) { 7358 /* 7359 * If this is a replay, we must restore the 7360 * current filehandle/vp to that of what was 7361 * returned originally. Try our best to do 7362 * it. 7363 */ 7364 nfs_fh4_fmt_t *fh_fmtp = 7365 (nfs_fh4_fmt_t *)oo->reply_fh.nfs_fh4_val; 7366 7367 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7368 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7369 7370 if (cs->exi == NULL) { 7371 resp->status = NFS4ERR_STALE; 7372 goto finish; 7373 } 7374 7375 VN_RELE(cs->vp); 7376 7377 cs->vp = nfs4_fhtovp(&oo->reply_fh, cs->exi, 7378 &resp->status); 7379 7380 if (cs->vp == NULL) 7381 goto finish; 7382 7383 nfs_fh4_copy(&oo->reply_fh, &cs->fh); 7384 } 7385 7386 /* 7387 * If this was a replay, no need to update the 7388 * sequence id. If the open_owner was not created on 7389 * this pass, then update. The first use of an 7390 * open_owner will not bump the sequence id. 7391 */ 7392 if (replay == FALSE && !create) 7393 rfs4_update_open_sequence(oo); 7394 /* 7395 * If the client is receiving an error and the 7396 * open_owner needs to be confirmed, there is no way 7397 * to notify the client of this fact ignoring the fact 7398 * that the server has no method of returning a 7399 * stateid to confirm. Therefore, the server needs to 7400 * mark this open_owner in a way as to avoid the 7401 * sequence id checking the next time the client uses 7402 * this open_owner. 7403 */ 7404 if (resp->status != NFS4_OK && oo->need_confirm) 7405 oo->postpone_confirm = TRUE; 7406 /* 7407 * If OK response then clear the postpone flag and 7408 * reset the sequence id to keep in sync with the 7409 * client. 7410 */ 7411 if (resp->status == NFS4_OK && oo->postpone_confirm) { 7412 oo->postpone_confirm = FALSE; 7413 oo->open_seqid = args->seqid; 7414 } 7415 break; 7416 } 7417 7418 finish: 7419 *cs->statusp = resp->status; 7420 7421 rfs4_sw_exit(&oo->oo_sw); 7422 rfs4_openowner_rele(oo); 7423 7424 end: 7425 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7426 OPEN4res *, resp); 7427 } 7428 7429 /*ARGSUSED*/ 7430 void 7431 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7432 struct svc_req *req, struct compound_state *cs) 7433 { 7434 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7435 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7436 rfs4_state_t *sp; 7437 nfsstat4 status; 7438 7439 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7440 OPEN_CONFIRM4args *, args); 7441 7442 if (cs->vp == NULL) { 7443 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7444 goto out; 7445 } 7446 7447 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7448 if (status != NFS4_OK) { 7449 *cs->statusp = resp->status = status; 7450 goto out; 7451 } 7452 7453 /* Ensure specified filehandle matches */ 7454 if (cs->vp != sp->finfo->vp) { 7455 rfs4_state_rele(sp); 7456 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7457 goto out; 7458 } 7459 7460 /* hold off other access to open_owner while we tinker */ 7461 rfs4_sw_enter(&sp->owner->oo_sw); 7462 7463 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7464 case NFS4_CHECK_STATEID_OKAY: 7465 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7466 resop) != 0) { 7467 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7468 break; 7469 } 7470 /* 7471 * If it is the appropriate stateid and determined to 7472 * be "OKAY" then this means that the stateid does not 7473 * need to be confirmed and the client is in error for 7474 * sending an OPEN_CONFIRM. 7475 */ 7476 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7477 break; 7478 case NFS4_CHECK_STATEID_OLD: 7479 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7480 break; 7481 case NFS4_CHECK_STATEID_BAD: 7482 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7483 break; 7484 case NFS4_CHECK_STATEID_EXPIRED: 7485 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7486 break; 7487 case NFS4_CHECK_STATEID_CLOSED: 7488 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7489 break; 7490 case NFS4_CHECK_STATEID_REPLAY: 7491 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7492 case NFS4_CHKSEQ_OKAY: 7493 /* 7494 * This is replayed stateid; if seqid matches 7495 * next expected, then client is using wrong seqid. 7496 */ 7497 /* fall through */ 7498 case NFS4_CHKSEQ_BAD: 7499 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7500 break; 7501 case NFS4_CHKSEQ_REPLAY: 7502 /* 7503 * Note this case is the duplicate case so 7504 * resp->status is already set. 7505 */ 7506 *cs->statusp = resp->status; 7507 rfs4_update_lease(sp->owner->client); 7508 break; 7509 } 7510 break; 7511 case NFS4_CHECK_STATEID_UNCONFIRMED: 7512 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7513 resop) != NFS4_CHKSEQ_OKAY) { 7514 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7515 break; 7516 } 7517 *cs->statusp = resp->status = NFS4_OK; 7518 7519 next_stateid(&sp->stateid); 7520 resp->open_stateid = sp->stateid.stateid; 7521 sp->owner->need_confirm = FALSE; 7522 rfs4_update_lease(sp->owner->client); 7523 rfs4_update_open_sequence(sp->owner); 7524 rfs4_update_open_resp(sp->owner, resop, NULL); 7525 break; 7526 default: 7527 ASSERT(FALSE); 7528 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7529 break; 7530 } 7531 rfs4_sw_exit(&sp->owner->oo_sw); 7532 rfs4_state_rele(sp); 7533 7534 out: 7535 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7536 OPEN_CONFIRM4res *, resp); 7537 } 7538 7539 /*ARGSUSED*/ 7540 void 7541 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7542 struct svc_req *req, struct compound_state *cs) 7543 { 7544 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7545 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7546 uint32_t access = args->share_access; 7547 uint32_t deny = args->share_deny; 7548 nfsstat4 status; 7549 rfs4_state_t *sp; 7550 rfs4_file_t *fp; 7551 int fflags = 0; 7552 7553 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7554 OPEN_DOWNGRADE4args *, args); 7555 7556 if (cs->vp == NULL) { 7557 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7558 goto out; 7559 } 7560 7561 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7562 if (status != NFS4_OK) { 7563 *cs->statusp = resp->status = status; 7564 goto out; 7565 } 7566 7567 /* Ensure specified filehandle matches */ 7568 if (cs->vp != sp->finfo->vp) { 7569 rfs4_state_rele(sp); 7570 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7571 goto out; 7572 } 7573 7574 /* hold off other access to open_owner while we tinker */ 7575 rfs4_sw_enter(&sp->owner->oo_sw); 7576 7577 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7578 case NFS4_CHECK_STATEID_OKAY: 7579 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7580 resop) != NFS4_CHKSEQ_OKAY) { 7581 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7582 goto end; 7583 } 7584 break; 7585 case NFS4_CHECK_STATEID_OLD: 7586 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7587 goto end; 7588 case NFS4_CHECK_STATEID_BAD: 7589 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7590 goto end; 7591 case NFS4_CHECK_STATEID_EXPIRED: 7592 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7593 goto end; 7594 case NFS4_CHECK_STATEID_CLOSED: 7595 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7596 goto end; 7597 case NFS4_CHECK_STATEID_UNCONFIRMED: 7598 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7599 goto end; 7600 case NFS4_CHECK_STATEID_REPLAY: 7601 /* Check the sequence id for the open owner */ 7602 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7603 case NFS4_CHKSEQ_OKAY: 7604 /* 7605 * This is replayed stateid; if seqid matches 7606 * next expected, then client is using wrong seqid. 7607 */ 7608 /* fall through */ 7609 case NFS4_CHKSEQ_BAD: 7610 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7611 goto end; 7612 case NFS4_CHKSEQ_REPLAY: 7613 /* 7614 * Note this case is the duplicate case so 7615 * resp->status is already set. 7616 */ 7617 *cs->statusp = resp->status; 7618 rfs4_update_lease(sp->owner->client); 7619 goto end; 7620 } 7621 break; 7622 default: 7623 ASSERT(FALSE); 7624 break; 7625 } 7626 7627 rfs4_dbe_lock(sp->dbe); 7628 /* 7629 * Check that the new access modes and deny modes are valid. 7630 * Check that no invalid bits are set. 7631 */ 7632 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7633 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7634 *cs->statusp = resp->status = NFS4ERR_INVAL; 7635 rfs4_update_open_sequence(sp->owner); 7636 rfs4_dbe_unlock(sp->dbe); 7637 goto end; 7638 } 7639 7640 /* 7641 * The new modes must be a subset of the current modes and 7642 * the access must specify at least one mode. To test that 7643 * the new mode is a subset of the current modes we bitwise 7644 * AND them together and check that the result equals the new 7645 * mode. For example: 7646 * New mode, access == R and current mode, sp->share_access == RW 7647 * access & sp->share_access == R == access, so the new access mode 7648 * is valid. Consider access == RW, sp->share_access = R 7649 * access & sp->share_access == R != access, so the new access mode 7650 * is invalid. 7651 */ 7652 if ((access & sp->share_access) != access || 7653 (deny & sp->share_deny) != deny || 7654 (access & 7655 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7656 *cs->statusp = resp->status = NFS4ERR_INVAL; 7657 rfs4_update_open_sequence(sp->owner); 7658 rfs4_dbe_unlock(sp->dbe); 7659 goto end; 7660 } 7661 7662 /* 7663 * Release any share locks associated with this stateID. 7664 * Strictly speaking, this violates the spec because the 7665 * spec effectively requires that open downgrade be atomic. 7666 * At present, fs_shrlock does not have this capability. 7667 */ 7668 rfs4_dbe_unlock(sp->dbe); 7669 rfs4_unshare(sp); 7670 rfs4_dbe_lock(sp->dbe); 7671 7672 fp = sp->finfo; 7673 rfs4_dbe_lock(fp->dbe); 7674 7675 /* 7676 * If the current mode has deny read and the new mode 7677 * does not, decrement the number of deny read mode bits 7678 * and if it goes to zero turn off the deny read bit 7679 * on the file. 7680 */ 7681 if ((sp->share_deny & OPEN4_SHARE_DENY_READ) && 7682 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7683 fp->deny_read--; 7684 if (fp->deny_read == 0) 7685 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 7686 } 7687 7688 /* 7689 * If the current mode has deny write and the new mode 7690 * does not, decrement the number of deny write mode bits 7691 * and if it goes to zero turn off the deny write bit 7692 * on the file. 7693 */ 7694 if ((sp->share_deny & OPEN4_SHARE_DENY_WRITE) && 7695 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7696 fp->deny_write--; 7697 if (fp->deny_write == 0) 7698 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7699 } 7700 7701 /* 7702 * If the current mode has access read and the new mode 7703 * does not, decrement the number of access read mode bits 7704 * and if it goes to zero turn off the access read bit 7705 * on the file. set fflags to FREAD for the call to 7706 * vn_open_downgrade(). 7707 */ 7708 if ((sp->share_access & OPEN4_SHARE_ACCESS_READ) && 7709 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7710 fp->access_read--; 7711 if (fp->access_read == 0) 7712 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7713 fflags |= FREAD; 7714 } 7715 7716 /* 7717 * If the current mode has access write and the new mode 7718 * does not, decrement the number of access write mode bits 7719 * and if it goes to zero turn off the access write bit 7720 * on the file. set fflags to FWRITE for the call to 7721 * vn_open_downgrade(). 7722 */ 7723 if ((sp->share_access & OPEN4_SHARE_ACCESS_WRITE) && 7724 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7725 fp->access_write--; 7726 if (fp->access_write == 0) 7727 fp->share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7728 fflags |= FWRITE; 7729 } 7730 7731 /* Set the new access and deny modes */ 7732 sp->share_access = access; 7733 sp->share_deny = deny; 7734 /* Check that the file is still accessible */ 7735 ASSERT(fp->share_access); 7736 7737 rfs4_dbe_unlock(fp->dbe); 7738 7739 rfs4_dbe_unlock(sp->dbe); 7740 7741 if ((status = rfs4_share(sp)) != NFS4_OK) { 7742 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7743 rfs4_update_open_sequence(sp->owner); 7744 goto end; 7745 } 7746 7747 /* 7748 * we successfully downgraded the share lock, now we need to downgrade 7749 * the open. it is possible that the downgrade was only for a deny 7750 * mode and we have nothing else to do. 7751 */ 7752 if ((fflags & (FREAD|FWRITE)) != 0) 7753 vn_open_downgrade(cs->vp, fflags); 7754 7755 rfs4_dbe_lock(sp->dbe); 7756 7757 /* Update the stateid */ 7758 next_stateid(&sp->stateid); 7759 resp->open_stateid = sp->stateid.stateid; 7760 7761 rfs4_dbe_unlock(sp->dbe); 7762 7763 *cs->statusp = resp->status = NFS4_OK; 7764 /* Update the lease */ 7765 rfs4_update_lease(sp->owner->client); 7766 /* And the sequence */ 7767 rfs4_update_open_sequence(sp->owner); 7768 rfs4_update_open_resp(sp->owner, resop, NULL); 7769 7770 end: 7771 rfs4_sw_exit(&sp->owner->oo_sw); 7772 rfs4_state_rele(sp); 7773 out: 7774 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7775 OPEN_DOWNGRADE4res *, resp); 7776 } 7777 7778 /* 7779 * The logic behind this function is detailed in the NFSv4 RFC in the 7780 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7781 * that section for explicit guidance to server behavior for 7782 * SETCLIENTID. 7783 */ 7784 void 7785 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7786 struct svc_req *req, struct compound_state *cs) 7787 { 7788 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7789 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7790 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7791 bool_t create = TRUE; 7792 char *addr, *netid; 7793 int len; 7794 7795 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7796 SETCLIENTID4args *, args); 7797 retry: 7798 newcp = cp_confirmed = cp_unconfirmed = NULL; 7799 7800 /* 7801 * In search of an EXISTING client matching the incoming 7802 * request to establish a new client identifier at the server 7803 */ 7804 create = TRUE; 7805 cp = rfs4_findclient(&args->client, &create, NULL); 7806 7807 /* Should never happen */ 7808 ASSERT(cp != NULL); 7809 7810 if (cp == NULL) { 7811 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7812 goto out; 7813 } 7814 7815 /* 7816 * Easiest case. Client identifier is newly created and is 7817 * unconfirmed. Also note that for this case, no other 7818 * entries exist for the client identifier. Nothing else to 7819 * check. Just setup the response and respond. 7820 */ 7821 if (create) { 7822 *cs->statusp = res->status = NFS4_OK; 7823 res->SETCLIENTID4res_u.resok4.clientid = cp->clientid; 7824 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7825 cp->confirm_verf; 7826 /* Setup callback information; CB_NULL confirmation later */ 7827 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 7828 7829 rfs4_client_rele(cp); 7830 goto out; 7831 } 7832 7833 /* 7834 * An existing, confirmed client may exist but it may not have 7835 * been active for at least one lease period. If so, then 7836 * "close" the client and create a new client identifier 7837 */ 7838 if (rfs4_lease_expired(cp)) { 7839 rfs4_client_close(cp); 7840 goto retry; 7841 } 7842 7843 if (cp->need_confirm == TRUE) 7844 cp_unconfirmed = cp; 7845 else 7846 cp_confirmed = cp; 7847 7848 cp = NULL; 7849 7850 /* 7851 * We have a confirmed client, now check for an 7852 * unconfimred entry 7853 */ 7854 if (cp_confirmed) { 7855 /* If creds don't match then client identifier is inuse */ 7856 if (!creds_ok(cp_confirmed->cr_set, req, cs)) { 7857 rfs4_cbinfo_t *cbp; 7858 /* 7859 * Some one else has established this client 7860 * id. Try and say * who they are. We will use 7861 * the call back address supplied by * the 7862 * first client. 7863 */ 7864 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7865 7866 addr = netid = NULL; 7867 7868 cbp = &cp_confirmed->cbinfo; 7869 if (cbp->cb_callback.cb_location.r_addr && 7870 cbp->cb_callback.cb_location.r_netid) { 7871 cb_client4 *cbcp = &cbp->cb_callback; 7872 7873 len = strlen(cbcp->cb_location.r_addr)+1; 7874 addr = kmem_alloc(len, KM_SLEEP); 7875 bcopy(cbcp->cb_location.r_addr, addr, len); 7876 len = strlen(cbcp->cb_location.r_netid)+1; 7877 netid = kmem_alloc(len, KM_SLEEP); 7878 bcopy(cbcp->cb_location.r_netid, netid, len); 7879 } 7880 7881 res->SETCLIENTID4res_u.client_using.r_addr = addr; 7882 res->SETCLIENTID4res_u.client_using.r_netid = netid; 7883 7884 rfs4_client_rele(cp_confirmed); 7885 } 7886 7887 /* 7888 * Confirmed, creds match, and verifier matches; must 7889 * be an update of the callback info 7890 */ 7891 if (cp_confirmed->nfs_client.verifier == 7892 args->client.verifier) { 7893 /* Setup callback information */ 7894 rfs4_client_setcb(cp_confirmed, &args->callback, 7895 args->callback_ident); 7896 7897 /* everything okay -- move ahead */ 7898 *cs->statusp = res->status = NFS4_OK; 7899 res->SETCLIENTID4res_u.resok4.clientid = 7900 cp_confirmed->clientid; 7901 7902 /* update the confirm_verifier and return it */ 7903 rfs4_client_scv_next(cp_confirmed); 7904 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7905 cp_confirmed->confirm_verf; 7906 7907 rfs4_client_rele(cp_confirmed); 7908 goto out; 7909 } 7910 7911 /* 7912 * Creds match but the verifier doesn't. Must search 7913 * for an unconfirmed client that would be replaced by 7914 * this request. 7915 */ 7916 create = FALSE; 7917 cp_unconfirmed = rfs4_findclient(&args->client, &create, 7918 cp_confirmed); 7919 } 7920 7921 /* 7922 * At this point, we have taken care of the brand new client 7923 * struct, INUSE case, update of an existing, and confirmed 7924 * client struct. 7925 */ 7926 7927 /* 7928 * check to see if things have changed while we originally 7929 * picked up the client struct. If they have, then return and 7930 * retry the processing of this SETCLIENTID request. 7931 */ 7932 if (cp_unconfirmed) { 7933 rfs4_dbe_lock(cp_unconfirmed->dbe); 7934 if (!cp_unconfirmed->need_confirm) { 7935 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7936 rfs4_client_rele(cp_unconfirmed); 7937 if (cp_confirmed) 7938 rfs4_client_rele(cp_confirmed); 7939 goto retry; 7940 } 7941 /* do away with the old unconfirmed one */ 7942 rfs4_dbe_invalidate(cp_unconfirmed->dbe); 7943 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7944 rfs4_client_rele(cp_unconfirmed); 7945 cp_unconfirmed = NULL; 7946 } 7947 7948 /* 7949 * This search will temporarily hide the confirmed client 7950 * struct while a new client struct is created as the 7951 * unconfirmed one. 7952 */ 7953 create = TRUE; 7954 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 7955 7956 ASSERT(newcp != NULL); 7957 7958 if (newcp == NULL) { 7959 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7960 rfs4_client_rele(cp_confirmed); 7961 goto out; 7962 } 7963 7964 /* 7965 * If one was not created, then a similar request must be in 7966 * process so release and start over with this one 7967 */ 7968 if (create != TRUE) { 7969 rfs4_client_rele(newcp); 7970 if (cp_confirmed) 7971 rfs4_client_rele(cp_confirmed); 7972 goto retry; 7973 } 7974 7975 *cs->statusp = res->status = NFS4_OK; 7976 res->SETCLIENTID4res_u.resok4.clientid = newcp->clientid; 7977 res->SETCLIENTID4res_u.resok4.setclientid_confirm = newcp->confirm_verf; 7978 /* Setup callback information; CB_NULL confirmation later */ 7979 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 7980 7981 newcp->cp_confirmed = cp_confirmed; 7982 7983 rfs4_client_rele(newcp); 7984 7985 out: 7986 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 7987 SETCLIENTID4res *, res); 7988 } 7989 7990 /*ARGSUSED*/ 7991 void 7992 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7993 struct svc_req *req, struct compound_state *cs) 7994 { 7995 SETCLIENTID_CONFIRM4args *args = 7996 &argop->nfs_argop4_u.opsetclientid_confirm; 7997 SETCLIENTID_CONFIRM4res *res = 7998 &resop->nfs_resop4_u.opsetclientid_confirm; 7999 rfs4_client_t *cp, *cptoclose = NULL; 8000 8001 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8002 struct compound_state *, cs, 8003 SETCLIENTID_CONFIRM4args *, args); 8004 8005 *cs->statusp = res->status = NFS4_OK; 8006 8007 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8008 8009 if (cp == NULL) { 8010 *cs->statusp = res->status = 8011 rfs4_check_clientid(&args->clientid, 1); 8012 goto out; 8013 } 8014 8015 if (!creds_ok(cp, req, cs)) { 8016 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8017 rfs4_client_rele(cp); 8018 goto out; 8019 } 8020 8021 /* If the verifier doesn't match, the record doesn't match */ 8022 if (cp->confirm_verf != args->setclientid_confirm) { 8023 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8024 rfs4_client_rele(cp); 8025 goto out; 8026 } 8027 8028 rfs4_dbe_lock(cp->dbe); 8029 cp->need_confirm = FALSE; 8030 if (cp->cp_confirmed) { 8031 cptoclose = cp->cp_confirmed; 8032 cptoclose->ss_remove = 1; 8033 cp->cp_confirmed = NULL; 8034 } 8035 8036 /* 8037 * Update the client's associated server instance, if it's changed 8038 * since the client was created. 8039 */ 8040 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8041 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8042 8043 /* 8044 * Record clientid in stable storage. 8045 * Must be done after server instance has been assigned. 8046 */ 8047 rfs4_ss_clid(cp, req); 8048 8049 rfs4_dbe_unlock(cp->dbe); 8050 8051 if (cptoclose) 8052 /* don't need to rele, client_close does it */ 8053 rfs4_client_close(cptoclose); 8054 8055 /* If needed, initiate CB_NULL call for callback path */ 8056 rfs4_deleg_cb_check(cp); 8057 rfs4_update_lease(cp); 8058 8059 /* 8060 * Check to see if client can perform reclaims 8061 */ 8062 rfs4_ss_chkclid(cp); 8063 8064 rfs4_client_rele(cp); 8065 8066 out: 8067 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8068 struct compound_state *, cs, 8069 SETCLIENTID_CONFIRM4 *, res); 8070 } 8071 8072 8073 /*ARGSUSED*/ 8074 void 8075 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8076 struct svc_req *req, struct compound_state *cs) 8077 { 8078 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8079 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8080 rfs4_state_t *sp; 8081 nfsstat4 status; 8082 8083 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8084 CLOSE4args *, args); 8085 8086 if (cs->vp == NULL) { 8087 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8088 goto out; 8089 } 8090 8091 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8092 if (status != NFS4_OK) { 8093 *cs->statusp = resp->status = status; 8094 goto out; 8095 } 8096 8097 /* Ensure specified filehandle matches */ 8098 if (cs->vp != sp->finfo->vp) { 8099 rfs4_state_rele(sp); 8100 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8101 goto out; 8102 } 8103 8104 /* hold off other access to open_owner while we tinker */ 8105 rfs4_sw_enter(&sp->owner->oo_sw); 8106 8107 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8108 case NFS4_CHECK_STATEID_OKAY: 8109 if (rfs4_check_open_seqid(args->seqid, sp->owner, 8110 resop) != NFS4_CHKSEQ_OKAY) { 8111 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8112 goto end; 8113 } 8114 break; 8115 case NFS4_CHECK_STATEID_OLD: 8116 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8117 goto end; 8118 case NFS4_CHECK_STATEID_BAD: 8119 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8120 goto end; 8121 case NFS4_CHECK_STATEID_EXPIRED: 8122 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8123 goto end; 8124 case NFS4_CHECK_STATEID_CLOSED: 8125 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8126 goto end; 8127 case NFS4_CHECK_STATEID_UNCONFIRMED: 8128 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8129 goto end; 8130 case NFS4_CHECK_STATEID_REPLAY: 8131 /* Check the sequence id for the open owner */ 8132 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 8133 case NFS4_CHKSEQ_OKAY: 8134 /* 8135 * This is replayed stateid; if seqid matches 8136 * next expected, then client is using wrong seqid. 8137 */ 8138 /* FALL THROUGH */ 8139 case NFS4_CHKSEQ_BAD: 8140 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8141 goto end; 8142 case NFS4_CHKSEQ_REPLAY: 8143 /* 8144 * Note this case is the duplicate case so 8145 * resp->status is already set. 8146 */ 8147 *cs->statusp = resp->status; 8148 rfs4_update_lease(sp->owner->client); 8149 goto end; 8150 } 8151 break; 8152 default: 8153 ASSERT(FALSE); 8154 break; 8155 } 8156 8157 rfs4_dbe_lock(sp->dbe); 8158 8159 /* Update the stateid. */ 8160 next_stateid(&sp->stateid); 8161 resp->open_stateid = sp->stateid.stateid; 8162 8163 rfs4_dbe_unlock(sp->dbe); 8164 8165 rfs4_update_lease(sp->owner->client); 8166 rfs4_update_open_sequence(sp->owner); 8167 rfs4_update_open_resp(sp->owner, resop, NULL); 8168 8169 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8170 8171 *cs->statusp = resp->status = status; 8172 8173 end: 8174 rfs4_sw_exit(&sp->owner->oo_sw); 8175 rfs4_state_rele(sp); 8176 out: 8177 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8178 CLOSE4res *, resp); 8179 } 8180 8181 /* 8182 * Manage the counts on the file struct and close all file locks 8183 */ 8184 /*ARGSUSED*/ 8185 void 8186 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8187 bool_t close_of_client) 8188 { 8189 rfs4_file_t *fp = sp->finfo; 8190 rfs4_lo_state_t *lsp; 8191 struct shrlock shr; 8192 struct shr_locowner shr_loco; 8193 int fflags, s_access, s_deny; 8194 8195 fflags = s_access = s_deny = 0; 8196 /* 8197 * Decrement the count for each access and deny bit that this 8198 * state has contributed to the file. If the file counts go to zero 8199 * clear the appropriate bit in the appropriate mask. 8200 */ 8201 8202 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 8203 fp->access_read--; 8204 fflags |= FREAD; 8205 s_access |= F_RDACC; 8206 if (fp->access_read == 0) 8207 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 8208 } 8209 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 8210 fp->access_write--; 8211 fflags |= FWRITE; 8212 s_access |= F_WRACC; 8213 if (fp->access_write == 0) 8214 fp->share_access &= ~OPEN4_SHARE_ACCESS_WRITE; 8215 } 8216 if (sp->share_deny & OPEN4_SHARE_DENY_READ) { 8217 fp->deny_read--; 8218 s_deny |= F_RDDNY; 8219 if (fp->deny_read == 0) 8220 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 8221 } 8222 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) { 8223 fp->deny_write--; 8224 s_deny |= F_WRDNY; 8225 if (fp->deny_write == 0) 8226 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8227 } 8228 8229 /* 8230 * If this call is part of the larger closing down of client 8231 * state then it is just easier to release all locks 8232 * associated with this client instead of going through each 8233 * individual file and cleaning locks there. 8234 */ 8235 if (close_of_client) { 8236 if (sp->owner->client->unlksys_completed == FALSE && 8237 sp->lockownerlist.next->lsp != NULL && 8238 sp->owner->client->sysidt != LM_NOSYSID) { 8239 /* Is the PxFS kernel module loaded? */ 8240 if (lm_remove_file_locks != NULL) { 8241 int new_sysid; 8242 8243 /* Encode the cluster nodeid in new sysid */ 8244 new_sysid = sp->owner->client->sysidt; 8245 lm_set_nlmid_flk(&new_sysid); 8246 8247 /* 8248 * This PxFS routine removes file locks for a 8249 * client over all nodes of a cluster. 8250 */ 8251 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8252 "lm_remove_file_locks(sysid=0x%x)\n", 8253 new_sysid)); 8254 (*lm_remove_file_locks)(new_sysid); 8255 } else { 8256 struct flock64 flk; 8257 8258 /* Release all locks for this client */ 8259 flk.l_type = F_UNLKSYS; 8260 flk.l_whence = 0; 8261 flk.l_start = 0; 8262 flk.l_len = 0; 8263 flk.l_sysid = sp->owner->client->sysidt; 8264 flk.l_pid = 0; 8265 (void) VOP_FRLOCK(sp->finfo->vp, F_SETLK, &flk, 8266 F_REMOTELOCK | FREAD | FWRITE, 8267 (u_offset_t)0, NULL, CRED(), NULL); 8268 } 8269 8270 sp->owner->client->unlksys_completed = TRUE; 8271 } 8272 } 8273 8274 /* 8275 * Release all locks on this file by this lock owner or at 8276 * least mark the locks as having been released 8277 */ 8278 for (lsp = sp->lockownerlist.next->lsp; lsp != NULL; 8279 lsp = lsp->lockownerlist.next->lsp) { 8280 8281 lsp->locks_cleaned = TRUE; 8282 8283 /* Was this already taken care of above? */ 8284 if (!close_of_client && 8285 sp->owner->client->sysidt != LM_NOSYSID) 8286 (void) cleanlocks(sp->finfo->vp, lsp->locker->pid, 8287 lsp->locker->client->sysidt); 8288 } 8289 8290 /* 8291 * Release any shrlocks associated with this open state ID. 8292 * This must be done before the rfs4_state gets marked closed. 8293 */ 8294 if (sp->owner->client->sysidt != LM_NOSYSID) { 8295 shr.s_access = s_access; 8296 shr.s_deny = s_deny; 8297 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 8298 shr.s_sysid = sp->owner->client->sysidt; 8299 shr_loco.sl_pid = shr.s_pid; 8300 shr_loco.sl_id = shr.s_sysid; 8301 shr.s_owner = (caddr_t)&shr_loco; 8302 shr.s_own_len = sizeof (shr_loco); 8303 (void) vop_shrlock(sp->finfo->vp, F_UNSHARE, &shr, fflags); 8304 } 8305 8306 (void) VOP_CLOSE(fp->vp, fflags, 1, (offset_t)0, cr, NULL); 8307 } 8308 8309 /* 8310 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8311 */ 8312 static nfsstat4 8313 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8314 { 8315 rfs4_lockowner_t *lo; 8316 rfs4_client_t *cp; 8317 uint32_t len; 8318 8319 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8320 if (lo != NULL) { 8321 cp = lo->client; 8322 if (rfs4_lease_expired(cp)) { 8323 rfs4_lockowner_rele(lo); 8324 rfs4_dbe_hold(cp->dbe); 8325 rfs4_client_close(cp); 8326 return (NFS4ERR_EXPIRED); 8327 } 8328 dp->owner.clientid = lo->owner.clientid; 8329 len = lo->owner.owner_len; 8330 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8331 bcopy(lo->owner.owner_val, dp->owner.owner_val, len); 8332 dp->owner.owner_len = len; 8333 rfs4_lockowner_rele(lo); 8334 goto finish; 8335 } 8336 8337 /* 8338 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8339 * of the client id contain the boot time for a NFS4 lock. So we 8340 * fabricate and identity by setting clientid to the sysid, and 8341 * the lock owner to the pid. 8342 */ 8343 dp->owner.clientid = flk->l_sysid; 8344 len = sizeof (pid_t); 8345 dp->owner.owner_len = len; 8346 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8347 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8348 finish: 8349 dp->offset = flk->l_start; 8350 dp->length = flk->l_len; 8351 8352 if (flk->l_type == F_RDLCK) 8353 dp->locktype = READ_LT; 8354 else if (flk->l_type == F_WRLCK) 8355 dp->locktype = WRITE_LT; 8356 else 8357 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8358 8359 return (NFS4_OK); 8360 } 8361 8362 static int 8363 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8364 { 8365 int error; 8366 struct flock64 flk; 8367 int i; 8368 clock_t delaytime; 8369 int cmd; 8370 8371 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8372 retry: 8373 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8374 8375 for (i = 0; i < rfs4_maxlock_tries; i++) { 8376 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8377 error = VOP_FRLOCK(vp, cmd, 8378 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8379 8380 if (error != EAGAIN && error != EACCES) 8381 break; 8382 8383 if (i < rfs4_maxlock_tries - 1) { 8384 delay(delaytime); 8385 delaytime *= 2; 8386 } 8387 } 8388 8389 if (error == EAGAIN || error == EACCES) { 8390 /* Get the owner of the lock */ 8391 flk = *flock; 8392 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8393 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8394 (u_offset_t)0, NULL, cred, NULL) == 0) { 8395 if (flk.l_type == F_UNLCK) { 8396 /* No longer locked, retry */ 8397 goto retry; 8398 } 8399 *flock = flk; 8400 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8401 F_GETLK, &flk); 8402 } 8403 } 8404 8405 return (error); 8406 } 8407 8408 /*ARGSUSED*/ 8409 static nfsstat4 8410 rfs4_do_lock(rfs4_lo_state_t *lp, nfs_lock_type4 locktype, 8411 seqid4 seqid, offset4 offset, 8412 length4 length, cred_t *cred, nfs_resop4 *resop) 8413 { 8414 nfsstat4 status; 8415 rfs4_lockowner_t *lo = lp->locker; 8416 rfs4_state_t *sp = lp->state; 8417 struct flock64 flock; 8418 int16_t ltype; 8419 int flag; 8420 int error; 8421 sysid_t sysid; 8422 LOCK4res *lres; 8423 8424 if (rfs4_lease_expired(lo->client)) { 8425 return (NFS4ERR_EXPIRED); 8426 } 8427 8428 if ((status = rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 8429 return (status); 8430 8431 /* Check for zero length. To lock to end of file use all ones for V4 */ 8432 if (length == 0) 8433 return (NFS4ERR_INVAL); 8434 else if (length == (length4)(~0)) 8435 length = 0; /* Posix to end of file */ 8436 8437 retry: 8438 rfs4_dbe_lock(sp->dbe); 8439 8440 8441 if (resop->resop != OP_LOCKU) { 8442 switch (locktype) { 8443 case READ_LT: 8444 case READW_LT: 8445 if ((sp->share_access 8446 & OPEN4_SHARE_ACCESS_READ) == 0) { 8447 rfs4_dbe_unlock(sp->dbe); 8448 8449 return (NFS4ERR_OPENMODE); 8450 } 8451 ltype = F_RDLCK; 8452 break; 8453 case WRITE_LT: 8454 case WRITEW_LT: 8455 if ((sp->share_access 8456 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8457 rfs4_dbe_unlock(sp->dbe); 8458 8459 return (NFS4ERR_OPENMODE); 8460 } 8461 ltype = F_WRLCK; 8462 break; 8463 } 8464 } else 8465 ltype = F_UNLCK; 8466 8467 flock.l_type = ltype; 8468 flock.l_whence = 0; /* SEEK_SET */ 8469 flock.l_start = offset; 8470 flock.l_len = length; 8471 flock.l_sysid = sysid; 8472 flock.l_pid = lp->locker->pid; 8473 8474 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8475 if (flock.l_len < 0 || flock.l_start < 0) { 8476 rfs4_dbe_unlock(sp->dbe); 8477 return (NFS4ERR_INVAL); 8478 } 8479 8480 /* 8481 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8482 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8483 */ 8484 flag = (int)sp->share_access | F_REMOTELOCK; 8485 8486 error = setlock(sp->finfo->vp, &flock, flag, cred); 8487 if (error == 0) { 8488 rfs4_dbe_lock(lp->dbe); 8489 next_stateid(&lp->lockid); 8490 rfs4_dbe_unlock(lp->dbe); 8491 } 8492 8493 rfs4_dbe_unlock(sp->dbe); 8494 8495 /* 8496 * N.B. We map error values to nfsv4 errors. This is differrent 8497 * than puterrno4 routine. 8498 */ 8499 switch (error) { 8500 case 0: 8501 status = NFS4_OK; 8502 break; 8503 case EAGAIN: 8504 case EACCES: /* Old value */ 8505 /* Can only get here if op is OP_LOCK */ 8506 ASSERT(resop->resop == OP_LOCK); 8507 lres = &resop->nfs_resop4_u.oplock; 8508 status = NFS4ERR_DENIED; 8509 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8510 == NFS4ERR_EXPIRED) 8511 goto retry; 8512 break; 8513 case ENOLCK: 8514 status = NFS4ERR_DELAY; 8515 break; 8516 case EOVERFLOW: 8517 status = NFS4ERR_INVAL; 8518 break; 8519 case EINVAL: 8520 status = NFS4ERR_NOTSUPP; 8521 break; 8522 default: 8523 status = NFS4ERR_SERVERFAULT; 8524 break; 8525 } 8526 8527 return (status); 8528 } 8529 8530 /*ARGSUSED*/ 8531 void 8532 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8533 struct svc_req *req, struct compound_state *cs) 8534 { 8535 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8536 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8537 nfsstat4 status; 8538 stateid4 *stateid; 8539 rfs4_lockowner_t *lo; 8540 rfs4_client_t *cp; 8541 rfs4_state_t *sp = NULL; 8542 rfs4_lo_state_t *lsp = NULL; 8543 bool_t ls_sw_held = FALSE; 8544 bool_t create = TRUE; 8545 bool_t lcreate = TRUE; 8546 bool_t dup_lock = FALSE; 8547 int rc; 8548 8549 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8550 LOCK4args *, args); 8551 8552 if (cs->vp == NULL) { 8553 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8554 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8555 cs, LOCK4res *, resp); 8556 return; 8557 } 8558 8559 if (args->locker.new_lock_owner) { 8560 /* Create a new lockowner for this instance */ 8561 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8562 8563 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8564 8565 stateid = &olo->open_stateid; 8566 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8567 if (status != NFS4_OK) { 8568 NFS4_DEBUG(rfs4_debug, 8569 (CE_NOTE, "Get state failed in lock %d", status)); 8570 *cs->statusp = resp->status = status; 8571 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8572 cs, LOCK4res *, resp); 8573 return; 8574 } 8575 8576 /* Ensure specified filehandle matches */ 8577 if (cs->vp != sp->finfo->vp) { 8578 rfs4_state_rele(sp); 8579 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8580 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8581 cs, LOCK4res *, resp); 8582 return; 8583 } 8584 8585 /* hold off other access to open_owner while we tinker */ 8586 rfs4_sw_enter(&sp->owner->oo_sw); 8587 8588 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8589 case NFS4_CHECK_STATEID_OLD: 8590 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8591 goto end; 8592 case NFS4_CHECK_STATEID_BAD: 8593 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8594 goto end; 8595 case NFS4_CHECK_STATEID_EXPIRED: 8596 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8597 goto end; 8598 case NFS4_CHECK_STATEID_UNCONFIRMED: 8599 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8600 goto end; 8601 case NFS4_CHECK_STATEID_CLOSED: 8602 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8603 goto end; 8604 case NFS4_CHECK_STATEID_OKAY: 8605 case NFS4_CHECK_STATEID_REPLAY: 8606 switch (rfs4_check_olo_seqid(olo->open_seqid, 8607 sp->owner, resop)) { 8608 case NFS4_CHKSEQ_OKAY: 8609 if (rc == NFS4_CHECK_STATEID_OKAY) 8610 break; 8611 /* 8612 * This is replayed stateid; if seqid 8613 * matches next expected, then client 8614 * is using wrong seqid. 8615 */ 8616 /* FALLTHROUGH */ 8617 case NFS4_CHKSEQ_BAD: 8618 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8619 goto end; 8620 case NFS4_CHKSEQ_REPLAY: 8621 /* This is a duplicate LOCK request */ 8622 dup_lock = TRUE; 8623 8624 /* 8625 * For a duplicate we do not want to 8626 * create a new lockowner as it should 8627 * already exist. 8628 * Turn off the lockowner create flag. 8629 */ 8630 lcreate = FALSE; 8631 } 8632 break; 8633 } 8634 8635 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8636 if (lo == NULL) { 8637 NFS4_DEBUG(rfs4_debug, 8638 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8639 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8640 goto end; 8641 } 8642 8643 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8644 if (lsp == NULL) { 8645 rfs4_update_lease(sp->owner->client); 8646 /* 8647 * Only update theh open_seqid if this is not 8648 * a duplicate request 8649 */ 8650 if (dup_lock == FALSE) { 8651 rfs4_update_open_sequence(sp->owner); 8652 } 8653 8654 NFS4_DEBUG(rfs4_debug, 8655 (CE_NOTE, "rfs4_op_lock: no state")); 8656 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8657 rfs4_update_open_resp(sp->owner, resop, NULL); 8658 rfs4_lockowner_rele(lo); 8659 goto end; 8660 } 8661 8662 /* 8663 * This is the new_lock_owner branch and the client is 8664 * supposed to be associating a new lock_owner with 8665 * the open file at this point. If we find that a 8666 * lock_owner/state association already exists and a 8667 * successful LOCK request was returned to the client, 8668 * an error is returned to the client since this is 8669 * not appropriate. The client should be using the 8670 * existing lock_owner branch. 8671 */ 8672 if (dup_lock == FALSE && create == FALSE) { 8673 if (lsp->lock_completed == TRUE) { 8674 *cs->statusp = 8675 resp->status = NFS4ERR_BAD_SEQID; 8676 rfs4_lockowner_rele(lo); 8677 goto end; 8678 } 8679 } 8680 8681 rfs4_update_lease(sp->owner->client); 8682 8683 /* 8684 * Only update theh open_seqid if this is not 8685 * a duplicate request 8686 */ 8687 if (dup_lock == FALSE) { 8688 rfs4_update_open_sequence(sp->owner); 8689 } 8690 8691 /* 8692 * If this is a duplicate lock request, just copy the 8693 * previously saved reply and return. 8694 */ 8695 if (dup_lock == TRUE) { 8696 /* verify that lock_seqid's match */ 8697 if (lsp->seqid != olo->lock_seqid) { 8698 NFS4_DEBUG(rfs4_debug, 8699 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8700 "lsp->seqid=%d old->seqid=%d", 8701 lsp->seqid, olo->lock_seqid)); 8702 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8703 } else { 8704 rfs4_copy_reply(resop, lsp->reply); 8705 /* 8706 * Make sure to copy the just 8707 * retrieved reply status into the 8708 * overall compound status 8709 */ 8710 *cs->statusp = resp->status; 8711 } 8712 rfs4_lockowner_rele(lo); 8713 goto end; 8714 } 8715 8716 rfs4_dbe_lock(lsp->dbe); 8717 8718 /* Make sure to update the lock sequence id */ 8719 lsp->seqid = olo->lock_seqid; 8720 8721 NFS4_DEBUG(rfs4_debug, 8722 (CE_NOTE, "Lock seqid established as %d", lsp->seqid)); 8723 8724 /* 8725 * This is used to signify the newly created lockowner 8726 * stateid and its sequence number. The checks for 8727 * sequence number and increment don't occur on the 8728 * very first lock request for a lockowner. 8729 */ 8730 lsp->skip_seqid_check = TRUE; 8731 8732 /* hold off other access to lsp while we tinker */ 8733 rfs4_sw_enter(&lsp->ls_sw); 8734 ls_sw_held = TRUE; 8735 8736 rfs4_dbe_unlock(lsp->dbe); 8737 8738 rfs4_lockowner_rele(lo); 8739 } else { 8740 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8741 /* get lsp and hold the lock on the underlying file struct */ 8742 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8743 != NFS4_OK) { 8744 *cs->statusp = resp->status = status; 8745 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8746 cs, LOCK4res *, resp); 8747 return; 8748 } 8749 create = FALSE; /* We didn't create lsp */ 8750 8751 /* Ensure specified filehandle matches */ 8752 if (cs->vp != lsp->state->finfo->vp) { 8753 rfs4_lo_state_rele(lsp, TRUE); 8754 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8755 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8756 cs, LOCK4res *, resp); 8757 return; 8758 } 8759 8760 /* hold off other access to lsp while we tinker */ 8761 rfs4_sw_enter(&lsp->ls_sw); 8762 ls_sw_held = TRUE; 8763 8764 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8765 /* 8766 * The stateid looks like it was okay (expected to be 8767 * the next one) 8768 */ 8769 case NFS4_CHECK_STATEID_OKAY: 8770 /* 8771 * The sequence id is now checked. Determine 8772 * if this is a replay or if it is in the 8773 * expected (next) sequence. In the case of a 8774 * replay, there are two replay conditions 8775 * that may occur. The first is the normal 8776 * condition where a LOCK is done with a 8777 * NFS4_OK response and the stateid is 8778 * updated. That case is handled below when 8779 * the stateid is identified as a REPLAY. The 8780 * second is the case where an error is 8781 * returned, like NFS4ERR_DENIED, and the 8782 * sequence number is updated but the stateid 8783 * is not updated. This second case is dealt 8784 * with here. So it may seem odd that the 8785 * stateid is okay but the sequence id is a 8786 * replay but it is okay. 8787 */ 8788 switch (rfs4_check_lock_seqid( 8789 args->locker.locker4_u.lock_owner.lock_seqid, 8790 lsp, resop)) { 8791 case NFS4_CHKSEQ_REPLAY: 8792 if (resp->status != NFS4_OK) { 8793 /* 8794 * Here is our replay and need 8795 * to verify that the last 8796 * response was an error. 8797 */ 8798 *cs->statusp = resp->status; 8799 goto end; 8800 } 8801 /* 8802 * This is done since the sequence id 8803 * looked like a replay but it didn't 8804 * pass our check so a BAD_SEQID is 8805 * returned as a result. 8806 */ 8807 /*FALLTHROUGH*/ 8808 case NFS4_CHKSEQ_BAD: 8809 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8810 goto end; 8811 case NFS4_CHKSEQ_OKAY: 8812 /* Everything looks okay move ahead */ 8813 break; 8814 } 8815 break; 8816 case NFS4_CHECK_STATEID_OLD: 8817 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8818 goto end; 8819 case NFS4_CHECK_STATEID_BAD: 8820 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8821 goto end; 8822 case NFS4_CHECK_STATEID_EXPIRED: 8823 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8824 goto end; 8825 case NFS4_CHECK_STATEID_CLOSED: 8826 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8827 goto end; 8828 case NFS4_CHECK_STATEID_REPLAY: 8829 switch (rfs4_check_lock_seqid( 8830 args->locker.locker4_u.lock_owner.lock_seqid, 8831 lsp, resop)) { 8832 case NFS4_CHKSEQ_OKAY: 8833 /* 8834 * This is a replayed stateid; if 8835 * seqid matches the next expected, 8836 * then client is using wrong seqid. 8837 */ 8838 case NFS4_CHKSEQ_BAD: 8839 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8840 goto end; 8841 case NFS4_CHKSEQ_REPLAY: 8842 rfs4_update_lease(lsp->locker->client); 8843 *cs->statusp = status = resp->status; 8844 goto end; 8845 } 8846 break; 8847 default: 8848 ASSERT(FALSE); 8849 break; 8850 } 8851 8852 rfs4_update_lock_sequence(lsp); 8853 rfs4_update_lease(lsp->locker->client); 8854 } 8855 8856 /* 8857 * NFS4 only allows locking on regular files, so 8858 * verify type of object. 8859 */ 8860 if (cs->vp->v_type != VREG) { 8861 if (cs->vp->v_type == VDIR) 8862 status = NFS4ERR_ISDIR; 8863 else 8864 status = NFS4ERR_INVAL; 8865 goto out; 8866 } 8867 8868 cp = lsp->state->owner->client; 8869 8870 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 8871 status = NFS4ERR_GRACE; 8872 goto out; 8873 } 8874 8875 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->can_reclaim) { 8876 status = NFS4ERR_NO_GRACE; 8877 goto out; 8878 } 8879 8880 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 8881 status = NFS4ERR_NO_GRACE; 8882 goto out; 8883 } 8884 8885 if (lsp->state->finfo->dinfo->dtype == OPEN_DELEGATE_WRITE) 8886 cs->deleg = TRUE; 8887 8888 status = rfs4_do_lock(lsp, args->locktype, 8889 args->locker.locker4_u.lock_owner.lock_seqid, 8890 args->offset, args->length, cs->cr, resop); 8891 8892 out: 8893 lsp->skip_seqid_check = FALSE; 8894 8895 *cs->statusp = resp->status = status; 8896 8897 if (status == NFS4_OK) { 8898 resp->LOCK4res_u.lock_stateid = lsp->lockid.stateid; 8899 lsp->lock_completed = TRUE; 8900 } 8901 /* 8902 * Only update the "OPEN" response here if this was a new 8903 * lock_owner 8904 */ 8905 if (sp) 8906 rfs4_update_open_resp(sp->owner, resop, NULL); 8907 8908 rfs4_update_lock_resp(lsp, resop); 8909 8910 end: 8911 if (lsp) { 8912 if (ls_sw_held) 8913 rfs4_sw_exit(&lsp->ls_sw); 8914 /* 8915 * If an sp obtained, then the lsp does not represent 8916 * a lock on the file struct. 8917 */ 8918 if (sp != NULL) 8919 rfs4_lo_state_rele(lsp, FALSE); 8920 else 8921 rfs4_lo_state_rele(lsp, TRUE); 8922 } 8923 if (sp) { 8924 rfs4_sw_exit(&sp->owner->oo_sw); 8925 rfs4_state_rele(sp); 8926 } 8927 8928 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 8929 LOCK4res *, resp); 8930 } 8931 8932 /* free function for LOCK/LOCKT */ 8933 static void 8934 lock_denied_free(nfs_resop4 *resop) 8935 { 8936 LOCK4denied *dp = NULL; 8937 8938 switch (resop->resop) { 8939 case OP_LOCK: 8940 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 8941 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 8942 break; 8943 case OP_LOCKT: 8944 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 8945 dp = &resop->nfs_resop4_u.oplockt.denied; 8946 break; 8947 default: 8948 break; 8949 } 8950 8951 if (dp) 8952 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 8953 } 8954 8955 /*ARGSUSED*/ 8956 void 8957 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 8958 struct svc_req *req, struct compound_state *cs) 8959 { 8960 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 8961 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 8962 nfsstat4 status; 8963 stateid4 *stateid = &args->lock_stateid; 8964 rfs4_lo_state_t *lsp; 8965 8966 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 8967 LOCKU4args *, args); 8968 8969 if (cs->vp == NULL) { 8970 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8971 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8972 LOCKU4res *, resp); 8973 return; 8974 } 8975 8976 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 8977 *cs->statusp = resp->status = status; 8978 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8979 LOCKU4res *, resp); 8980 return; 8981 } 8982 8983 /* Ensure specified filehandle matches */ 8984 if (cs->vp != lsp->state->finfo->vp) { 8985 rfs4_lo_state_rele(lsp, TRUE); 8986 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8987 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8988 LOCKU4res *, resp); 8989 return; 8990 } 8991 8992 /* hold off other access to lsp while we tinker */ 8993 rfs4_sw_enter(&lsp->ls_sw); 8994 8995 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8996 case NFS4_CHECK_STATEID_OKAY: 8997 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 8998 != NFS4_CHKSEQ_OKAY) { 8999 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9000 goto end; 9001 } 9002 break; 9003 case NFS4_CHECK_STATEID_OLD: 9004 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9005 goto end; 9006 case NFS4_CHECK_STATEID_BAD: 9007 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9008 goto end; 9009 case NFS4_CHECK_STATEID_EXPIRED: 9010 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9011 goto end; 9012 case NFS4_CHECK_STATEID_CLOSED: 9013 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9014 goto end; 9015 case NFS4_CHECK_STATEID_REPLAY: 9016 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9017 case NFS4_CHKSEQ_OKAY: 9018 /* 9019 * This is a replayed stateid; if 9020 * seqid matches the next expected, 9021 * then client is using wrong seqid. 9022 */ 9023 case NFS4_CHKSEQ_BAD: 9024 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9025 goto end; 9026 case NFS4_CHKSEQ_REPLAY: 9027 rfs4_update_lease(lsp->locker->client); 9028 *cs->statusp = status = resp->status; 9029 goto end; 9030 } 9031 break; 9032 default: 9033 ASSERT(FALSE); 9034 break; 9035 } 9036 9037 rfs4_update_lock_sequence(lsp); 9038 rfs4_update_lease(lsp->locker->client); 9039 9040 /* 9041 * NFS4 only allows locking on regular files, so 9042 * verify type of object. 9043 */ 9044 if (cs->vp->v_type != VREG) { 9045 if (cs->vp->v_type == VDIR) 9046 status = NFS4ERR_ISDIR; 9047 else 9048 status = NFS4ERR_INVAL; 9049 goto out; 9050 } 9051 9052 if (rfs4_clnt_in_grace(lsp->state->owner->client)) { 9053 status = NFS4ERR_GRACE; 9054 goto out; 9055 } 9056 9057 status = rfs4_do_lock(lsp, args->locktype, 9058 args->seqid, args->offset, args->length, cs->cr, resop); 9059 9060 out: 9061 *cs->statusp = resp->status = status; 9062 9063 if (status == NFS4_OK) 9064 resp->lock_stateid = lsp->lockid.stateid; 9065 9066 rfs4_update_lock_resp(lsp, resop); 9067 9068 end: 9069 rfs4_sw_exit(&lsp->ls_sw); 9070 rfs4_lo_state_rele(lsp, TRUE); 9071 9072 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9073 LOCKU4res *, resp); 9074 } 9075 9076 /* 9077 * LOCKT is a best effort routine, the client can not be guaranteed that 9078 * the status return is still in effect by the time the reply is received. 9079 * They are numerous race conditions in this routine, but we are not required 9080 * and can not be accurate. 9081 */ 9082 /*ARGSUSED*/ 9083 void 9084 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9085 struct svc_req *req, struct compound_state *cs) 9086 { 9087 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9088 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9089 rfs4_lockowner_t *lo; 9090 rfs4_client_t *cp; 9091 bool_t create = FALSE; 9092 struct flock64 flk; 9093 int error; 9094 int flag = FREAD | FWRITE; 9095 int ltype; 9096 length4 posix_length; 9097 sysid_t sysid; 9098 pid_t pid; 9099 9100 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9101 LOCKT4args *, args); 9102 9103 if (cs->vp == NULL) { 9104 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9105 goto out; 9106 } 9107 9108 /* 9109 * NFS4 only allows locking on regular files, so 9110 * verify type of object. 9111 */ 9112 if (cs->vp->v_type != VREG) { 9113 if (cs->vp->v_type == VDIR) 9114 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9115 else 9116 *cs->statusp = resp->status = NFS4ERR_INVAL; 9117 goto out; 9118 } 9119 9120 /* 9121 * Check out the clientid to ensure the server knows about it 9122 * so that we correctly inform the client of a server reboot. 9123 */ 9124 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9125 == NULL) { 9126 *cs->statusp = resp->status = 9127 rfs4_check_clientid(&args->owner.clientid, 0); 9128 goto out; 9129 } 9130 if (rfs4_lease_expired(cp)) { 9131 rfs4_client_close(cp); 9132 /* 9133 * Protocol doesn't allow returning NFS4ERR_STALE as 9134 * other operations do on this check so STALE_CLIENTID 9135 * is returned instead 9136 */ 9137 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9138 goto out; 9139 } 9140 9141 if (rfs4_clnt_in_grace(cp) && !(cp->can_reclaim)) { 9142 *cs->statusp = resp->status = NFS4ERR_GRACE; 9143 rfs4_client_rele(cp); 9144 goto out; 9145 } 9146 rfs4_client_rele(cp); 9147 9148 resp->status = NFS4_OK; 9149 9150 switch (args->locktype) { 9151 case READ_LT: 9152 case READW_LT: 9153 ltype = F_RDLCK; 9154 break; 9155 case WRITE_LT: 9156 case WRITEW_LT: 9157 ltype = F_WRLCK; 9158 break; 9159 } 9160 9161 posix_length = args->length; 9162 /* Check for zero length. To lock to end of file use all ones for V4 */ 9163 if (posix_length == 0) { 9164 *cs->statusp = resp->status = NFS4ERR_INVAL; 9165 goto out; 9166 } else if (posix_length == (length4)(~0)) { 9167 posix_length = 0; /* Posix to end of file */ 9168 } 9169 9170 /* Find or create a lockowner */ 9171 lo = rfs4_findlockowner(&args->owner, &create); 9172 9173 if (lo) { 9174 pid = lo->pid; 9175 if ((resp->status = 9176 rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 9177 goto err; 9178 } else { 9179 pid = 0; 9180 sysid = lockt_sysid; 9181 } 9182 retry: 9183 flk.l_type = ltype; 9184 flk.l_whence = 0; /* SEEK_SET */ 9185 flk.l_start = args->offset; 9186 flk.l_len = posix_length; 9187 flk.l_sysid = sysid; 9188 flk.l_pid = pid; 9189 flag |= F_REMOTELOCK; 9190 9191 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9192 9193 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9194 if (flk.l_len < 0 || flk.l_start < 0) { 9195 resp->status = NFS4ERR_INVAL; 9196 goto err; 9197 } 9198 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9199 NULL, cs->cr, NULL); 9200 9201 /* 9202 * N.B. We map error values to nfsv4 errors. This is differrent 9203 * than puterrno4 routine. 9204 */ 9205 switch (error) { 9206 case 0: 9207 if (flk.l_type == F_UNLCK) 9208 resp->status = NFS4_OK; 9209 else { 9210 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9211 goto retry; 9212 resp->status = NFS4ERR_DENIED; 9213 } 9214 break; 9215 case EOVERFLOW: 9216 resp->status = NFS4ERR_INVAL; 9217 break; 9218 case EINVAL: 9219 resp->status = NFS4ERR_NOTSUPP; 9220 break; 9221 default: 9222 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9223 error); 9224 resp->status = NFS4ERR_SERVERFAULT; 9225 break; 9226 } 9227 9228 err: 9229 if (lo) 9230 rfs4_lockowner_rele(lo); 9231 *cs->statusp = resp->status; 9232 out: 9233 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9234 LOCKT4res *, resp); 9235 } 9236 9237 static int 9238 vop_shrlock(vnode_t *vp, int cmd, struct shrlock *sp, int fflags) 9239 { 9240 int err; 9241 9242 if (cmd == F_UNSHARE && sp->s_deny == 0 && sp->s_access == 0) 9243 return (0); 9244 9245 err = VOP_SHRLOCK(vp, cmd, sp, fflags, CRED(), NULL); 9246 9247 NFS4_DEBUG(rfs4_shrlock_debug, 9248 (CE_NOTE, "rfs4_shrlock %s vp=%p acc=%d dny=%d sysid=%d " 9249 "pid=%d err=%d\n", cmd == F_UNSHARE ? "UNSHR" : "SHARE", 9250 (void *) vp, sp->s_access, sp->s_deny, sp->s_sysid, sp->s_pid, 9251 err)); 9252 9253 return (err); 9254 } 9255 9256 static int 9257 rfs4_shrlock(rfs4_state_t *sp, int cmd) 9258 { 9259 struct shrlock shr; 9260 struct shr_locowner shr_loco; 9261 int fflags; 9262 9263 fflags = shr.s_access = shr.s_deny = 0; 9264 9265 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 9266 fflags |= FREAD; 9267 shr.s_access |= F_RDACC; 9268 } 9269 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 9270 fflags |= FWRITE; 9271 shr.s_access |= F_WRACC; 9272 } 9273 if (sp->share_deny & OPEN4_SHARE_DENY_READ) 9274 shr.s_deny |= F_RDDNY; 9275 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) 9276 shr.s_deny |= F_WRDNY; 9277 9278 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 9279 shr.s_sysid = sp->owner->client->sysidt; 9280 shr_loco.sl_pid = shr.s_pid; 9281 shr_loco.sl_id = shr.s_sysid; 9282 shr.s_owner = (caddr_t)&shr_loco; 9283 shr.s_own_len = sizeof (shr_loco); 9284 return (vop_shrlock(sp->finfo->vp, cmd, &shr, fflags)); 9285 } 9286 9287 static int 9288 rfs4_share(rfs4_state_t *sp) 9289 { 9290 int cmd; 9291 cmd = nbl_need_check(sp->finfo->vp) ? F_SHARE_NBMAND : F_SHARE; 9292 return (rfs4_shrlock(sp, cmd)); 9293 } 9294 9295 void 9296 rfs4_unshare(rfs4_state_t *sp) 9297 { 9298 (void) rfs4_shrlock(sp, F_UNSHARE); 9299 } 9300 9301 static int 9302 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9303 { 9304 struct clist *wcl; 9305 count4 count = rok->data_len; 9306 int wlist_len; 9307 9308 wcl = args->wlist; 9309 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9310 return (FALSE); 9311 } 9312 wcl = args->wlist; 9313 rok->wlist_len = wlist_len; 9314 rok->wlist = wcl; 9315 return (TRUE); 9316 } 9317