1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 28 * All Rights Reserved 29 */ 30 31 #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 58 #include <rpc/types.h> 59 #include <rpc/auth.h> 60 #include <rpc/rpcsec_gss.h> 61 #include <rpc/svc.h> 62 63 #include <nfs/nfs.h> 64 #include <nfs/export.h> 65 #include <nfs/nfs_cmd.h> 66 #include <nfs/lm.h> 67 #include <nfs/nfs4.h> 68 69 #include <sys/strsubr.h> 70 #include <sys/strsun.h> 71 72 #include <inet/common.h> 73 #include <inet/ip.h> 74 #include <inet/ip6.h> 75 76 #include <sys/tsol/label.h> 77 #include <sys/tsol/tndb.h> 78 79 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 80 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 81 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 82 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 83 extern struct svc_ops rdma_svc_ops; 84 /* End of Tunables */ 85 86 static int rdma_setup_read_data4(READ4args *, READ4res *); 87 88 /* 89 * Used to bump the stateid4.seqid value and show changes in the stateid 90 */ 91 #define next_stateid(sp) (++(sp)->bits.chgseq) 92 93 /* 94 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 95 * This is used to return NFS4ERR_TOOSMALL when clients specify 96 * maxcount that isn't large enough to hold the smallest possible 97 * XDR encoded dirent. 98 * 99 * sizeof cookie (8 bytes) + 100 * sizeof name_len (4 bytes) + 101 * sizeof smallest (padded) name (4 bytes) + 102 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 103 * sizeof attrlist4_len (4 bytes) + 104 * sizeof next boolean (4 bytes) 105 * 106 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 107 * the smallest possible entry4 (assumes no attrs requested). 108 * sizeof nfsstat4 (4 bytes) + 109 * sizeof verifier4 (8 bytes) + 110 * sizeof entry4list bool (4 bytes) + 111 * sizeof entry4 (36 bytes) + 112 * sizeof eof bool (4 bytes) 113 * 114 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 115 * VOP_READDIR. Its value is the size of the maximum possible dirent 116 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 117 * required for a given name length. MAXNAMELEN is the maximum 118 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 119 * macros are to allow for . and .. entries -- just a minor tweak to try 120 * and guarantee that buffer we give to VOP_READDIR will be large enough 121 * to hold ., .., and the largest possible solaris dirent64. 122 */ 123 #define RFS4_MINLEN_ENTRY4 36 124 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 125 #define RFS4_MINLEN_RDDIR_BUF \ 126 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 127 128 /* 129 * It would be better to pad to 4 bytes since that's what XDR would do, 130 * but the dirents UFS gives us are already padded to 8, so just take 131 * what we're given. Dircount is only a hint anyway. Currently the 132 * solaris kernel is ASCII only, so there's no point in calling the 133 * UTF8 functions. 134 * 135 * dirent64: named padded to provide 8 byte struct alignment 136 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 137 * 138 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 139 * 140 */ 141 #define DIRENT64_TO_DIRCOUNT(dp) \ 142 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 143 144 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 145 146 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 147 148 u_longlong_t nfs4_srv_caller_id; 149 uint_t nfs4_srv_vkey = 0; 150 151 verifier4 Write4verf; 152 verifier4 Readdir4verf; 153 154 void rfs4_init_compound_state(struct compound_state *); 155 156 static void nullfree(caddr_t); 157 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 158 struct compound_state *); 159 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 160 struct compound_state *); 161 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 162 struct compound_state *); 163 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 164 struct compound_state *); 165 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 166 struct compound_state *); 167 static void rfs4_op_create_free(nfs_resop4 *resop); 168 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 169 struct svc_req *, struct compound_state *); 170 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 171 struct svc_req *, struct compound_state *); 172 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 173 struct compound_state *); 174 static void rfs4_op_getattr_free(nfs_resop4 *); 175 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 176 struct compound_state *); 177 static void rfs4_op_getfh_free(nfs_resop4 *); 178 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 179 struct compound_state *); 180 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 181 struct compound_state *); 182 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 183 struct compound_state *); 184 static void lock_denied_free(nfs_resop4 *); 185 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 186 struct compound_state *); 187 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 188 struct compound_state *); 189 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 190 struct compound_state *); 191 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 192 struct compound_state *); 193 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 194 struct svc_req *req, struct compound_state *cs); 195 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 196 struct compound_state *); 197 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 198 struct compound_state *); 199 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 200 struct svc_req *, struct compound_state *); 201 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 202 struct svc_req *, struct compound_state *); 203 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 204 struct compound_state *); 205 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 206 struct compound_state *); 207 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 208 struct compound_state *); 209 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 210 struct compound_state *); 211 static void rfs4_op_read_free(nfs_resop4 *); 212 static void rfs4_op_readdir_free(nfs_resop4 *resop); 213 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 214 struct compound_state *); 215 static void rfs4_op_readlink_free(nfs_resop4 *); 216 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 217 struct svc_req *, struct compound_state *); 218 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 219 struct compound_state *); 220 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 221 struct compound_state *); 222 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 223 struct compound_state *); 224 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 225 struct compound_state *); 226 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 227 struct compound_state *); 228 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 229 struct compound_state *); 230 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 231 struct compound_state *); 232 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 233 struct compound_state *); 234 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 235 struct svc_req *, struct compound_state *); 236 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 237 struct svc_req *req, struct compound_state *); 238 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 239 struct compound_state *); 240 static void rfs4_op_secinfo_free(nfs_resop4 *); 241 242 static nfsstat4 check_open_access(uint32_t, 243 struct compound_state *, struct svc_req *); 244 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 245 static int vop_shrlock(vnode_t *, int, struct shrlock *, int); 246 static int rfs4_shrlock(rfs4_state_t *, int); 247 static int rfs4_share(rfs4_state_t *); 248 void rfs4_ss_clid(rfs4_client_t *, struct svc_req *); 249 250 /* 251 * translation table for attrs 252 */ 253 struct nfs4_ntov_table { 254 union nfs4_attr_u *na; 255 uint8_t amap[NFS4_MAXNUM_ATTRS]; 256 int attrcnt; 257 bool_t vfsstat; 258 }; 259 260 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 261 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 262 struct nfs4_svgetit_arg *sargp); 263 264 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 265 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 266 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 267 268 fem_t *deleg_rdops; 269 fem_t *deleg_wrops; 270 271 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 272 kmutex_t rfs4_servinst_lock; /* protects linked list */ 273 int rfs4_seen_first_compound; /* set first time we see one */ 274 275 /* 276 * NFS4 op dispatch table 277 */ 278 279 struct rfsv4disp { 280 void (*dis_proc)(); /* proc to call */ 281 void (*dis_resfree)(); /* frees space allocated by proc */ 282 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 283 }; 284 285 static struct rfsv4disp rfsv4disptab[] = { 286 /* 287 * NFS VERSION 4 288 */ 289 290 /* RFS_NULL = 0 */ 291 {rfs4_op_illegal, nullfree, 0}, 292 293 /* UNUSED = 1 */ 294 {rfs4_op_illegal, nullfree, 0}, 295 296 /* UNUSED = 2 */ 297 {rfs4_op_illegal, nullfree, 0}, 298 299 /* OP_ACCESS = 3 */ 300 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 301 302 /* OP_CLOSE = 4 */ 303 {rfs4_op_close, nullfree, 0}, 304 305 /* OP_COMMIT = 5 */ 306 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 307 308 /* OP_CREATE = 6 */ 309 {rfs4_op_create, nullfree, 0}, 310 311 /* OP_DELEGPURGE = 7 */ 312 {rfs4_op_delegpurge, nullfree, 0}, 313 314 /* OP_DELEGRETURN = 8 */ 315 {rfs4_op_delegreturn, nullfree, 0}, 316 317 /* OP_GETATTR = 9 */ 318 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 319 320 /* OP_GETFH = 10 */ 321 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 322 323 /* OP_LINK = 11 */ 324 {rfs4_op_link, nullfree, 0}, 325 326 /* OP_LOCK = 12 */ 327 {rfs4_op_lock, lock_denied_free, 0}, 328 329 /* OP_LOCKT = 13 */ 330 {rfs4_op_lockt, lock_denied_free, 0}, 331 332 /* OP_LOCKU = 14 */ 333 {rfs4_op_locku, nullfree, 0}, 334 335 /* OP_LOOKUP = 15 */ 336 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 337 338 /* OP_LOOKUPP = 16 */ 339 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 340 341 /* OP_NVERIFY = 17 */ 342 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 343 344 /* OP_OPEN = 18 */ 345 {rfs4_op_open, rfs4_free_reply, 0}, 346 347 /* OP_OPENATTR = 19 */ 348 {rfs4_op_openattr, nullfree, 0}, 349 350 /* OP_OPEN_CONFIRM = 20 */ 351 {rfs4_op_open_confirm, nullfree, 0}, 352 353 /* OP_OPEN_DOWNGRADE = 21 */ 354 {rfs4_op_open_downgrade, nullfree, 0}, 355 356 /* OP_OPEN_PUTFH = 22 */ 357 {rfs4_op_putfh, nullfree, RPC_ALL}, 358 359 /* OP_PUTPUBFH = 23 */ 360 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 361 362 /* OP_PUTROOTFH = 24 */ 363 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 364 365 /* OP_READ = 25 */ 366 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 367 368 /* OP_READDIR = 26 */ 369 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 370 371 /* OP_READLINK = 27 */ 372 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 373 374 /* OP_REMOVE = 28 */ 375 {rfs4_op_remove, nullfree, 0}, 376 377 /* OP_RENAME = 29 */ 378 {rfs4_op_rename, nullfree, 0}, 379 380 /* OP_RENEW = 30 */ 381 {rfs4_op_renew, nullfree, 0}, 382 383 /* OP_RESTOREFH = 31 */ 384 {rfs4_op_restorefh, nullfree, RPC_ALL}, 385 386 /* OP_SAVEFH = 32 */ 387 {rfs4_op_savefh, nullfree, RPC_ALL}, 388 389 /* OP_SECINFO = 33 */ 390 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 391 392 /* OP_SETATTR = 34 */ 393 {rfs4_op_setattr, nullfree, 0}, 394 395 /* OP_SETCLIENTID = 35 */ 396 {rfs4_op_setclientid, nullfree, 0}, 397 398 /* OP_SETCLIENTID_CONFIRM = 36 */ 399 {rfs4_op_setclientid_confirm, nullfree, 0}, 400 401 /* OP_VERIFY = 37 */ 402 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 403 404 /* OP_WRITE = 38 */ 405 {rfs4_op_write, nullfree, 0}, 406 407 /* OP_RELEASE_LOCKOWNER = 39 */ 408 {rfs4_op_release_lockowner, nullfree, 0}, 409 }; 410 411 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 412 413 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 414 415 #ifdef DEBUG 416 417 int rfs4_fillone_debug = 0; 418 int rfs4_shrlock_debug = 0; 419 int rfs4_no_stub_access = 1; 420 int rfs4_rddir_debug = 0; 421 422 static char *rfs4_op_string[] = { 423 "rfs4_op_null", 424 "rfs4_op_1 unused", 425 "rfs4_op_2 unused", 426 "rfs4_op_access", 427 "rfs4_op_close", 428 "rfs4_op_commit", 429 "rfs4_op_create", 430 "rfs4_op_delegpurge", 431 "rfs4_op_delegreturn", 432 "rfs4_op_getattr", 433 "rfs4_op_getfh", 434 "rfs4_op_link", 435 "rfs4_op_lock", 436 "rfs4_op_lockt", 437 "rfs4_op_locku", 438 "rfs4_op_lookup", 439 "rfs4_op_lookupp", 440 "rfs4_op_nverify", 441 "rfs4_op_open", 442 "rfs4_op_openattr", 443 "rfs4_op_open_confirm", 444 "rfs4_op_open_downgrade", 445 "rfs4_op_putfh", 446 "rfs4_op_putpubfh", 447 "rfs4_op_putrootfh", 448 "rfs4_op_read", 449 "rfs4_op_readdir", 450 "rfs4_op_readlink", 451 "rfs4_op_remove", 452 "rfs4_op_rename", 453 "rfs4_op_renew", 454 "rfs4_op_restorefh", 455 "rfs4_op_savefh", 456 "rfs4_op_secinfo", 457 "rfs4_op_setattr", 458 "rfs4_op_setclientid", 459 "rfs4_op_setclient_confirm", 460 "rfs4_op_verify", 461 "rfs4_op_write", 462 "rfs4_op_release_lockowner", 463 "rfs4_op_illegal" 464 }; 465 #endif 466 467 void rfs4_ss_chkclid(rfs4_client_t *); 468 469 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 470 471 #ifdef nextdp 472 #undef nextdp 473 #endif 474 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 475 476 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 477 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 478 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 479 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 480 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 481 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 482 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 483 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 484 NULL, NULL 485 }; 486 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 487 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 488 VOPNAME_READ, { .femop_read = deleg_wr_read }, 489 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 490 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 491 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 492 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 493 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 494 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 495 NULL, NULL 496 }; 497 498 int 499 rfs4_srvrinit(void) 500 { 501 timespec32_t verf; 502 int error; 503 extern void rfs4_attr_init(); 504 extern krwlock_t rfs4_deleg_policy_lock; 505 506 /* 507 * The following algorithm attempts to find a unique verifier 508 * to be used as the write verifier returned from the server 509 * to the client. It is important that this verifier change 510 * whenever the server reboots. Of secondary importance, it 511 * is important for the verifier to be unique between two 512 * different servers. 513 * 514 * Thus, an attempt is made to use the system hostid and the 515 * current time in seconds when the nfssrv kernel module is 516 * loaded. It is assumed that an NFS server will not be able 517 * to boot and then to reboot in less than a second. If the 518 * hostid has not been set, then the current high resolution 519 * time is used. This will ensure different verifiers each 520 * time the server reboots and minimize the chances that two 521 * different servers will have the same verifier. 522 * XXX - this is broken on LP64 kernels. 523 */ 524 verf.tv_sec = (time_t)nfs_atoi(hw_serial); 525 if (verf.tv_sec != 0) { 526 verf.tv_nsec = gethrestime_sec(); 527 } else { 528 timespec_t tverf; 529 530 gethrestime(&tverf); 531 verf.tv_sec = (time_t)tverf.tv_sec; 532 verf.tv_nsec = tverf.tv_nsec; 533 } 534 535 Write4verf = *(uint64_t *)&verf; 536 537 rfs4_attr_init(); 538 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 539 540 /* Used to manage create/destroy of server state */ 541 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 542 543 /* Used to manage access to server instance linked list */ 544 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 545 546 /* Used to manage access to rfs4_deleg_policy */ 547 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 548 549 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 550 if (error != 0) { 551 rfs4_disable_delegation(); 552 } else { 553 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 554 &deleg_wrops); 555 if (error != 0) { 556 rfs4_disable_delegation(); 557 fem_free(deleg_rdops); 558 } 559 } 560 561 nfs4_srv_caller_id = fs_new_caller_id(); 562 563 lockt_sysid = lm_alloc_sysidt(); 564 565 vsd_create(&nfs4_srv_vkey, NULL); 566 567 return (0); 568 } 569 570 void 571 rfs4_srvrfini(void) 572 { 573 extern krwlock_t rfs4_deleg_policy_lock; 574 575 if (lockt_sysid != LM_NOSYSID) { 576 lm_free_sysidt(lockt_sysid); 577 lockt_sysid = LM_NOSYSID; 578 } 579 580 mutex_destroy(&rfs4_deleg_lock); 581 mutex_destroy(&rfs4_state_lock); 582 rw_destroy(&rfs4_deleg_policy_lock); 583 584 fem_free(deleg_rdops); 585 fem_free(deleg_wrops); 586 } 587 588 void 589 rfs4_init_compound_state(struct compound_state *cs) 590 { 591 bzero(cs, sizeof (*cs)); 592 cs->cont = TRUE; 593 cs->access = CS_ACCESS_DENIED; 594 cs->deleg = FALSE; 595 cs->mandlock = FALSE; 596 cs->fh.nfs_fh4_val = cs->fhbuf; 597 } 598 599 void 600 rfs4_grace_start(rfs4_servinst_t *sip) 601 { 602 time_t now = gethrestime_sec(); 603 604 rw_enter(&sip->rwlock, RW_WRITER); 605 sip->start_time = now; 606 sip->grace_period = rfs4_grace_period; 607 rw_exit(&sip->rwlock); 608 } 609 610 /* 611 * returns true if the instance's grace period has never been started 612 */ 613 int 614 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 615 { 616 time_t start_time; 617 618 rw_enter(&sip->rwlock, RW_READER); 619 start_time = sip->start_time; 620 rw_exit(&sip->rwlock); 621 622 return (start_time == 0); 623 } 624 625 /* 626 * Indicates if server instance is within the 627 * grace period. 628 */ 629 int 630 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 631 { 632 time_t grace_expiry; 633 634 rw_enter(&sip->rwlock, RW_READER); 635 grace_expiry = sip->start_time + sip->grace_period; 636 rw_exit(&sip->rwlock); 637 638 return (gethrestime_sec() < grace_expiry); 639 } 640 641 int 642 rfs4_clnt_in_grace(rfs4_client_t *cp) 643 { 644 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 645 646 return (rfs4_servinst_in_grace(cp->server_instance)); 647 } 648 649 /* 650 * reset all currently active grace periods 651 */ 652 void 653 rfs4_grace_reset_all(void) 654 { 655 rfs4_servinst_t *sip; 656 657 mutex_enter(&rfs4_servinst_lock); 658 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 659 if (rfs4_servinst_in_grace(sip)) 660 rfs4_grace_start(sip); 661 mutex_exit(&rfs4_servinst_lock); 662 } 663 664 /* 665 * start any new instances' grace periods 666 */ 667 void 668 rfs4_grace_start_new(void) 669 { 670 rfs4_servinst_t *sip; 671 672 mutex_enter(&rfs4_servinst_lock); 673 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 674 if (rfs4_servinst_grace_new(sip)) 675 rfs4_grace_start(sip); 676 mutex_exit(&rfs4_servinst_lock); 677 } 678 679 static rfs4_dss_path_t * 680 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 681 { 682 size_t len; 683 rfs4_dss_path_t *dss_path; 684 685 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 686 687 /* 688 * Take a copy of the string, since the original may be overwritten. 689 * Sadly, no strdup() in the kernel. 690 */ 691 /* allow for NUL */ 692 len = strlen(path) + 1; 693 dss_path->path = kmem_alloc(len, KM_SLEEP); 694 (void) strlcpy(dss_path->path, path, len); 695 696 /* associate with servinst */ 697 dss_path->sip = sip; 698 dss_path->index = index; 699 700 /* 701 * Add to list of served paths. 702 * No locking required, as we're only ever called at startup. 703 */ 704 if (rfs4_dss_pathlist == NULL) { 705 /* this is the first dss_path_t */ 706 707 /* needed for insque/remque */ 708 dss_path->next = dss_path->prev = dss_path; 709 710 rfs4_dss_pathlist = dss_path; 711 } else { 712 insque(dss_path, rfs4_dss_pathlist); 713 } 714 715 return (dss_path); 716 } 717 718 /* 719 * Create a new server instance, and make it the currently active instance. 720 * Note that starting the grace period too early will reduce the clients' 721 * recovery window. 722 */ 723 void 724 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 725 { 726 unsigned i; 727 rfs4_servinst_t *sip; 728 rfs4_oldstate_t *oldstate; 729 730 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 731 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 732 733 sip->start_time = (time_t)0; 734 sip->grace_period = (time_t)0; 735 sip->next = NULL; 736 sip->prev = NULL; 737 738 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 739 /* 740 * This initial dummy entry is required to setup for insque/remque. 741 * It must be skipped over whenever the list is traversed. 742 */ 743 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 744 /* insque/remque require initial list entry to be self-terminated */ 745 oldstate->next = oldstate; 746 oldstate->prev = oldstate; 747 sip->oldstate = oldstate; 748 749 750 sip->dss_npaths = dss_npaths; 751 sip->dss_paths = kmem_alloc(dss_npaths * 752 sizeof (rfs4_dss_path_t *), KM_SLEEP); 753 754 for (i = 0; i < dss_npaths; i++) { 755 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 756 } 757 758 mutex_enter(&rfs4_servinst_lock); 759 if (rfs4_cur_servinst != NULL) { 760 /* add to linked list */ 761 sip->prev = rfs4_cur_servinst; 762 rfs4_cur_servinst->next = sip; 763 } 764 if (start_grace) 765 rfs4_grace_start(sip); 766 /* make the new instance "current" */ 767 rfs4_cur_servinst = sip; 768 769 mutex_exit(&rfs4_servinst_lock); 770 } 771 772 /* 773 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 774 * all instances directly. 775 */ 776 void 777 rfs4_servinst_destroy_all(void) 778 { 779 rfs4_servinst_t *sip, *prev, *current; 780 #ifdef DEBUG 781 int n = 0; 782 #endif 783 784 mutex_enter(&rfs4_servinst_lock); 785 ASSERT(rfs4_cur_servinst != NULL); 786 current = rfs4_cur_servinst; 787 rfs4_cur_servinst = NULL; 788 for (sip = current; sip != NULL; sip = prev) { 789 prev = sip->prev; 790 rw_destroy(&sip->rwlock); 791 if (sip->oldstate) 792 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 793 if (sip->dss_paths) 794 kmem_free(sip->dss_paths, 795 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 796 kmem_free(sip, sizeof (rfs4_servinst_t)); 797 #ifdef DEBUG 798 n++; 799 #endif 800 } 801 mutex_exit(&rfs4_servinst_lock); 802 } 803 804 /* 805 * Assign the current server instance to a client_t. 806 * Should be called with cp->dbe held. 807 */ 808 void 809 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 810 { 811 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 812 813 /* 814 * The lock ensures that if the current instance is in the process 815 * of changing, we will see the new one. 816 */ 817 mutex_enter(&rfs4_servinst_lock); 818 cp->server_instance = sip; 819 mutex_exit(&rfs4_servinst_lock); 820 } 821 822 rfs4_servinst_t * 823 rfs4_servinst(rfs4_client_t *cp) 824 { 825 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 826 827 return (cp->server_instance); 828 } 829 830 /* ARGSUSED */ 831 static void 832 nullfree(caddr_t resop) 833 { 834 } 835 836 /* 837 * This is a fall-through for invalid or not implemented (yet) ops 838 */ 839 /* ARGSUSED */ 840 static void 841 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 842 struct compound_state *cs) 843 { 844 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 845 } 846 847 /* 848 * Check if the security flavor, nfsnum, is in the flavor_list. 849 */ 850 bool_t 851 in_flavor_list(int nfsnum, int *flavor_list, int count) 852 { 853 int i; 854 855 for (i = 0; i < count; i++) { 856 if (nfsnum == flavor_list[i]) 857 return (TRUE); 858 } 859 return (FALSE); 860 } 861 862 /* 863 * Used by rfs4_op_secinfo to get the security information from the 864 * export structure associated with the component. 865 */ 866 /* ARGSUSED */ 867 static nfsstat4 868 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 869 { 870 int error, different_export = 0; 871 vnode_t *dvp, *vp, *tvp; 872 struct exportinfo *exi = NULL; 873 fid_t fid; 874 uint_t count, i; 875 secinfo4 *resok_val; 876 struct secinfo *secp; 877 seconfig_t *si; 878 bool_t did_traverse; 879 int dotdot, walk; 880 881 dvp = cs->vp; 882 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 883 884 /* 885 * If dotdotting, then need to check whether it's above the 886 * root of a filesystem, or above an export point. 887 */ 888 if (dotdot) { 889 890 /* 891 * If dotdotting at the root of a filesystem, then 892 * need to traverse back to the mounted-on filesystem 893 * and do the dotdot lookup there. 894 */ 895 if (cs->vp->v_flag & VROOT) { 896 897 /* 898 * If at the system root, then can 899 * go up no further. 900 */ 901 if (VN_CMP(dvp, rootdir)) 902 return (puterrno4(ENOENT)); 903 904 /* 905 * Traverse back to the mounted-on filesystem 906 */ 907 dvp = untraverse(cs->vp); 908 909 /* 910 * Set the different_export flag so we remember 911 * to pick up a new exportinfo entry for 912 * this new filesystem. 913 */ 914 different_export = 1; 915 } else { 916 917 /* 918 * If dotdotting above an export point then set 919 * the different_export to get new export info. 920 */ 921 different_export = nfs_exported(cs->exi, cs->vp); 922 } 923 } 924 925 /* 926 * Get the vnode for the component "nm". 927 */ 928 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 929 NULL, NULL, NULL); 930 if (error) 931 return (puterrno4(error)); 932 933 /* 934 * If the vnode is in a pseudo filesystem, or if the security flavor 935 * used in the request is valid but not an explicitly shared flavor, 936 * or the access bit indicates that this is a limited access, 937 * check whether this vnode is visible. 938 */ 939 if (!different_export && 940 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 941 cs->access & CS_ACCESS_LIMITED)) { 942 if (! nfs_visible(cs->exi, vp, &different_export)) { 943 VN_RELE(vp); 944 return (puterrno4(ENOENT)); 945 } 946 } 947 948 /* 949 * If it's a mountpoint, then traverse it. 950 */ 951 if (vn_ismntpt(vp)) { 952 tvp = vp; 953 if ((error = traverse(&tvp)) != 0) { 954 VN_RELE(vp); 955 return (puterrno4(error)); 956 } 957 /* remember that we had to traverse mountpoint */ 958 did_traverse = TRUE; 959 vp = tvp; 960 different_export = 1; 961 } else if (vp->v_vfsp != dvp->v_vfsp) { 962 /* 963 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 964 * then vp is probably an LOFS object. We don't need the 965 * realvp, we just need to know that we might have crossed 966 * a server fs boundary and need to call checkexport4. 967 * (LOFS lookup hides server fs mountpoints, and actually calls 968 * traverse) 969 */ 970 different_export = 1; 971 did_traverse = FALSE; 972 } 973 974 /* 975 * Get the export information for it. 976 */ 977 if (different_export) { 978 979 bzero(&fid, sizeof (fid)); 980 fid.fid_len = MAXFIDSZ; 981 error = vop_fid_pseudo(vp, &fid); 982 if (error) { 983 VN_RELE(vp); 984 return (puterrno4(error)); 985 } 986 987 if (dotdot) 988 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 989 else 990 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 991 992 if (exi == NULL) { 993 if (did_traverse == TRUE) { 994 /* 995 * If this vnode is a mounted-on vnode, 996 * but the mounted-on file system is not 997 * exported, send back the secinfo for 998 * the exported node that the mounted-on 999 * vnode lives in. 1000 */ 1001 exi = cs->exi; 1002 } else { 1003 VN_RELE(vp); 1004 return (puterrno4(EACCES)); 1005 } 1006 } 1007 } else { 1008 exi = cs->exi; 1009 } 1010 ASSERT(exi != NULL); 1011 1012 1013 /* 1014 * Create the secinfo result based on the security information 1015 * from the exportinfo structure (exi). 1016 * 1017 * Return all flavors for a pseudo node. 1018 * For a real export node, return the flavor that the client 1019 * has access with. 1020 */ 1021 ASSERT(RW_LOCK_HELD(&exported_lock)); 1022 if (PSEUDO(exi)) { 1023 count = exi->exi_export.ex_seccnt; /* total sec count */ 1024 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1025 secp = exi->exi_export.ex_secinfo; 1026 1027 for (i = 0; i < count; i++) { 1028 si = &secp[i].s_secinfo; 1029 resok_val[i].flavor = si->sc_rpcnum; 1030 if (resok_val[i].flavor == RPCSEC_GSS) { 1031 rpcsec_gss_info *info; 1032 1033 info = &resok_val[i].flavor_info; 1034 info->qop = si->sc_qop; 1035 info->service = (rpc_gss_svc_t)si->sc_service; 1036 1037 /* get oid opaque data */ 1038 info->oid.sec_oid4_len = 1039 si->sc_gss_mech_type->length; 1040 info->oid.sec_oid4_val = kmem_alloc( 1041 si->sc_gss_mech_type->length, KM_SLEEP); 1042 bcopy( 1043 si->sc_gss_mech_type->elements, 1044 info->oid.sec_oid4_val, 1045 info->oid.sec_oid4_len); 1046 } 1047 } 1048 resp->SECINFO4resok_len = count; 1049 resp->SECINFO4resok_val = resok_val; 1050 } else { 1051 int ret_cnt = 0, k = 0; 1052 int *flavor_list; 1053 1054 count = exi->exi_export.ex_seccnt; /* total sec count */ 1055 secp = exi->exi_export.ex_secinfo; 1056 1057 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1058 /* find out which flavors to return */ 1059 for (i = 0; i < count; i ++) { 1060 int access, flavor, perm; 1061 1062 flavor = secp[i].s_secinfo.sc_nfsnum; 1063 perm = secp[i].s_flags; 1064 1065 access = nfsauth4_secinfo_access(exi, cs->req, 1066 flavor, perm); 1067 1068 if (! (access & NFSAUTH_DENIED) && 1069 ! (access & NFSAUTH_WRONGSEC)) { 1070 flavor_list[ret_cnt] = flavor; 1071 ret_cnt++; 1072 } 1073 } 1074 1075 /* Create the returning SECINFO value */ 1076 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1077 1078 for (i = 0; i < count; i++) { 1079 /* 1080 * If the flavor is in the flavor list, 1081 * fill in resok_val. 1082 */ 1083 si = &secp[i].s_secinfo; 1084 if (in_flavor_list(si->sc_nfsnum, 1085 flavor_list, ret_cnt)) { 1086 resok_val[k].flavor = si->sc_rpcnum; 1087 if (resok_val[k].flavor == RPCSEC_GSS) { 1088 rpcsec_gss_info *info; 1089 1090 info = &resok_val[k].flavor_info; 1091 info->qop = si->sc_qop; 1092 info->service = (rpc_gss_svc_t) 1093 si->sc_service; 1094 1095 /* get oid opaque data */ 1096 info->oid.sec_oid4_len = 1097 si->sc_gss_mech_type->length; 1098 info->oid.sec_oid4_val = kmem_alloc( 1099 si->sc_gss_mech_type->length, 1100 KM_SLEEP); 1101 bcopy(si->sc_gss_mech_type->elements, 1102 info->oid.sec_oid4_val, 1103 info->oid.sec_oid4_len); 1104 } 1105 k++; 1106 } 1107 if (k >= ret_cnt) 1108 break; 1109 } 1110 resp->SECINFO4resok_len = ret_cnt; 1111 resp->SECINFO4resok_val = resok_val; 1112 kmem_free(flavor_list, count * sizeof (int)); 1113 } 1114 1115 VN_RELE(vp); 1116 return (NFS4_OK); 1117 } 1118 1119 /* 1120 * SECINFO (Operation 33): Obtain required security information on 1121 * the component name in the format of (security-mechanism-oid, qop, service) 1122 * triplets. 1123 */ 1124 /* ARGSUSED */ 1125 static void 1126 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1127 struct compound_state *cs) 1128 { 1129 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1130 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1131 utf8string *utfnm = &args->name; 1132 uint_t len; 1133 char *nm; 1134 struct sockaddr *ca; 1135 char *name = NULL; 1136 1137 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1138 SECINFO4args *, args); 1139 1140 /* 1141 * Current file handle (cfh) should have been set before getting 1142 * into this function. If not, return error. 1143 */ 1144 if (cs->vp == NULL) { 1145 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1146 goto out; 1147 } 1148 1149 if (cs->vp->v_type != VDIR) { 1150 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1151 goto out; 1152 } 1153 1154 /* 1155 * Verify the component name. If failed, error out, but 1156 * do not error out if the component name is a "..". 1157 * SECINFO will return its parents secinfo data for SECINFO "..". 1158 */ 1159 if (!utf8_dir_verify(utfnm)) { 1160 if (utfnm->utf8string_len != 2 || 1161 utfnm->utf8string_val[0] != '.' || 1162 utfnm->utf8string_val[1] != '.') { 1163 *cs->statusp = resp->status = NFS4ERR_INVAL; 1164 goto out; 1165 } 1166 } 1167 1168 nm = utf8_to_str(utfnm, &len, NULL); 1169 if (nm == NULL) { 1170 *cs->statusp = resp->status = NFS4ERR_INVAL; 1171 goto out; 1172 } 1173 1174 if (len > MAXNAMELEN) { 1175 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1176 kmem_free(nm, len); 1177 goto out; 1178 } 1179 /* If necessary, convert to UTF-8 for illbehaved clients */ 1180 1181 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1182 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1183 MAXPATHLEN + 1); 1184 1185 if (name == NULL) { 1186 *cs->statusp = resp->status = NFS4ERR_INVAL; 1187 kmem_free(nm, len); 1188 goto out; 1189 } 1190 1191 1192 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1193 1194 if (name != nm) 1195 kmem_free(name, MAXPATHLEN + 1); 1196 kmem_free(nm, len); 1197 1198 out: 1199 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1200 SECINFO4res *, resp); 1201 } 1202 1203 /* 1204 * Free SECINFO result. 1205 */ 1206 /* ARGSUSED */ 1207 static void 1208 rfs4_op_secinfo_free(nfs_resop4 *resop) 1209 { 1210 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1211 int count, i; 1212 secinfo4 *resok_val; 1213 1214 /* If this is not an Ok result, nothing to free. */ 1215 if (resp->status != NFS4_OK) { 1216 return; 1217 } 1218 1219 count = resp->SECINFO4resok_len; 1220 resok_val = resp->SECINFO4resok_val; 1221 1222 for (i = 0; i < count; i++) { 1223 if (resok_val[i].flavor == RPCSEC_GSS) { 1224 rpcsec_gss_info *info; 1225 1226 info = &resok_val[i].flavor_info; 1227 kmem_free(info->oid.sec_oid4_val, 1228 info->oid.sec_oid4_len); 1229 } 1230 } 1231 kmem_free(resok_val, count * sizeof (secinfo4)); 1232 resp->SECINFO4resok_len = 0; 1233 resp->SECINFO4resok_val = NULL; 1234 } 1235 1236 /* ARGSUSED */ 1237 static void 1238 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1239 struct compound_state *cs) 1240 { 1241 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1242 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1243 int error; 1244 vnode_t *vp; 1245 struct vattr va; 1246 int checkwriteperm; 1247 cred_t *cr = cs->cr; 1248 bslabel_t *clabel, *slabel; 1249 ts_label_t *tslabel; 1250 boolean_t admin_low_client; 1251 1252 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1253 ACCESS4args *, args); 1254 1255 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1256 if (cs->access == CS_ACCESS_DENIED) { 1257 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1258 goto out; 1259 } 1260 #endif 1261 if (cs->vp == NULL) { 1262 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1263 goto out; 1264 } 1265 1266 ASSERT(cr != NULL); 1267 1268 vp = cs->vp; 1269 1270 /* 1271 * If the file system is exported read only, it is not appropriate 1272 * to check write permissions for regular files and directories. 1273 * Special files are interpreted by the client, so the underlying 1274 * permissions are sent back to the client for interpretation. 1275 */ 1276 if (rdonly4(cs->exi, cs->vp, req) && 1277 (vp->v_type == VREG || vp->v_type == VDIR)) 1278 checkwriteperm = 0; 1279 else 1280 checkwriteperm = 1; 1281 1282 /* 1283 * XXX 1284 * We need the mode so that we can correctly determine access 1285 * permissions relative to a mandatory lock file. Access to 1286 * mandatory lock files is denied on the server, so it might 1287 * as well be reflected to the server during the open. 1288 */ 1289 va.va_mask = AT_MODE; 1290 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1291 if (error) { 1292 *cs->statusp = resp->status = puterrno4(error); 1293 goto out; 1294 } 1295 resp->access = 0; 1296 resp->supported = 0; 1297 1298 if (is_system_labeled()) { 1299 ASSERT(req->rq_label != NULL); 1300 clabel = req->rq_label; 1301 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1302 "got client label from request(1)", 1303 struct svc_req *, req); 1304 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1305 if ((tslabel = nfs_getflabel(vp)) == NULL) { 1306 *cs->statusp = resp->status = puterrno4(EACCES); 1307 goto out; 1308 } 1309 slabel = label2bslabel(tslabel); 1310 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1311 char *, "got server label(1) for vp(2)", 1312 bslabel_t *, slabel, vnode_t *, vp); 1313 1314 admin_low_client = B_FALSE; 1315 } else 1316 admin_low_client = B_TRUE; 1317 } 1318 1319 if (args->access & ACCESS4_READ) { 1320 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1321 if (!error && !MANDLOCK(vp, va.va_mode) && 1322 (!is_system_labeled() || admin_low_client || 1323 bldominates(clabel, slabel))) 1324 resp->access |= ACCESS4_READ; 1325 resp->supported |= ACCESS4_READ; 1326 } 1327 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1328 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1329 if (!error && (!is_system_labeled() || admin_low_client || 1330 bldominates(clabel, slabel))) 1331 resp->access |= ACCESS4_LOOKUP; 1332 resp->supported |= ACCESS4_LOOKUP; 1333 } 1334 if (checkwriteperm && 1335 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1336 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1337 if (!error && !MANDLOCK(vp, va.va_mode) && 1338 (!is_system_labeled() || admin_low_client || 1339 blequal(clabel, slabel))) 1340 resp->access |= 1341 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1342 resp->supported |= (ACCESS4_MODIFY | ACCESS4_EXTEND); 1343 } 1344 1345 if (checkwriteperm && 1346 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1347 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1348 if (!error && (!is_system_labeled() || admin_low_client || 1349 blequal(clabel, slabel))) 1350 resp->access |= ACCESS4_DELETE; 1351 resp->supported |= ACCESS4_DELETE; 1352 } 1353 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1354 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1355 if (!error && !MANDLOCK(vp, va.va_mode) && 1356 (!is_system_labeled() || admin_low_client || 1357 bldominates(clabel, slabel))) 1358 resp->access |= ACCESS4_EXECUTE; 1359 resp->supported |= ACCESS4_EXECUTE; 1360 } 1361 1362 if (is_system_labeled() && !admin_low_client) 1363 label_rele(tslabel); 1364 1365 *cs->statusp = resp->status = NFS4_OK; 1366 out: 1367 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1368 ACCESS4res *, resp); 1369 } 1370 1371 /* ARGSUSED */ 1372 static void 1373 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1374 struct compound_state *cs) 1375 { 1376 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1377 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1378 int error; 1379 vnode_t *vp = cs->vp; 1380 cred_t *cr = cs->cr; 1381 vattr_t va; 1382 1383 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1384 COMMIT4args *, args); 1385 1386 if (vp == NULL) { 1387 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1388 goto out; 1389 } 1390 if (cs->access == CS_ACCESS_DENIED) { 1391 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1392 goto out; 1393 } 1394 1395 if (args->offset + args->count < args->offset) { 1396 *cs->statusp = resp->status = NFS4ERR_INVAL; 1397 goto out; 1398 } 1399 1400 va.va_mask = AT_UID; 1401 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1402 1403 /* 1404 * If we can't get the attributes, then we can't do the 1405 * right access checking. So, we'll fail the request. 1406 */ 1407 if (error) { 1408 *cs->statusp = resp->status = puterrno4(error); 1409 goto out; 1410 } 1411 if (rdonly4(cs->exi, cs->vp, req)) { 1412 *cs->statusp = resp->status = NFS4ERR_ROFS; 1413 goto out; 1414 } 1415 1416 if (vp->v_type != VREG) { 1417 if (vp->v_type == VDIR) 1418 resp->status = NFS4ERR_ISDIR; 1419 else 1420 resp->status = NFS4ERR_INVAL; 1421 *cs->statusp = resp->status; 1422 goto out; 1423 } 1424 1425 if (crgetuid(cr) != va.va_uid && 1426 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1427 *cs->statusp = resp->status = puterrno4(error); 1428 goto out; 1429 } 1430 1431 error = VOP_PUTPAGE(vp, args->offset, args->count, 0, cr, NULL); 1432 if (!error) 1433 error = VOP_FSYNC(vp, FNODSYNC, cr, NULL); 1434 1435 if (error) { 1436 *cs->statusp = resp->status = puterrno4(error); 1437 goto out; 1438 } 1439 1440 *cs->statusp = resp->status = NFS4_OK; 1441 resp->writeverf = Write4verf; 1442 out: 1443 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1444 COMMIT4res *, resp); 1445 } 1446 1447 /* 1448 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1449 * was completed. It does the nfsv4 create for special files. 1450 */ 1451 /* ARGSUSED */ 1452 static vnode_t * 1453 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1454 struct compound_state *cs, vattr_t *vap, char *nm) 1455 { 1456 int error; 1457 cred_t *cr = cs->cr; 1458 vnode_t *dvp = cs->vp; 1459 vnode_t *vp = NULL; 1460 int mode; 1461 enum vcexcl excl; 1462 1463 switch (args->type) { 1464 case NF4CHR: 1465 case NF4BLK: 1466 if (secpolicy_sys_devices(cr) != 0) { 1467 *cs->statusp = resp->status = NFS4ERR_PERM; 1468 return (NULL); 1469 } 1470 if (args->type == NF4CHR) 1471 vap->va_type = VCHR; 1472 else 1473 vap->va_type = VBLK; 1474 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1475 args->ftype4_u.devdata.specdata2); 1476 vap->va_mask |= AT_RDEV; 1477 break; 1478 case NF4SOCK: 1479 vap->va_type = VSOCK; 1480 break; 1481 case NF4FIFO: 1482 vap->va_type = VFIFO; 1483 break; 1484 default: 1485 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1486 return (NULL); 1487 } 1488 1489 /* 1490 * Must specify the mode. 1491 */ 1492 if (!(vap->va_mask & AT_MODE)) { 1493 *cs->statusp = resp->status = NFS4ERR_INVAL; 1494 return (NULL); 1495 } 1496 1497 excl = EXCL; 1498 1499 mode = 0; 1500 1501 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1502 if (error) { 1503 *cs->statusp = resp->status = puterrno4(error); 1504 return (NULL); 1505 } 1506 return (vp); 1507 } 1508 1509 /* 1510 * nfsv4 create is used to create non-regular files. For regular files, 1511 * use nfsv4 open. 1512 */ 1513 /* ARGSUSED */ 1514 static void 1515 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1516 struct compound_state *cs) 1517 { 1518 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1519 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1520 int error; 1521 struct vattr bva, iva, iva2, ava, *vap; 1522 cred_t *cr = cs->cr; 1523 vnode_t *dvp = cs->vp; 1524 vnode_t *vp = NULL; 1525 vnode_t *realvp; 1526 char *nm, *lnm; 1527 uint_t len, llen; 1528 int syncval = 0; 1529 struct nfs4_svgetit_arg sarg; 1530 struct nfs4_ntov_table ntov; 1531 struct statvfs64 sb; 1532 nfsstat4 status; 1533 struct sockaddr *ca; 1534 char *name = NULL; 1535 char *lname = NULL; 1536 1537 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1538 CREATE4args *, args); 1539 1540 resp->attrset = 0; 1541 1542 if (dvp == NULL) { 1543 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1544 goto out; 1545 } 1546 1547 /* 1548 * If there is an unshared filesystem mounted on this vnode, 1549 * do not allow to create an object in this directory. 1550 */ 1551 if (vn_ismntpt(dvp)) { 1552 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1553 goto out; 1554 } 1555 1556 /* Verify that type is correct */ 1557 switch (args->type) { 1558 case NF4LNK: 1559 case NF4BLK: 1560 case NF4CHR: 1561 case NF4SOCK: 1562 case NF4FIFO: 1563 case NF4DIR: 1564 break; 1565 default: 1566 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1567 goto out; 1568 }; 1569 1570 if (cs->access == CS_ACCESS_DENIED) { 1571 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1572 goto out; 1573 } 1574 if (dvp->v_type != VDIR) { 1575 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1576 goto out; 1577 } 1578 if (!utf8_dir_verify(&args->objname)) { 1579 *cs->statusp = resp->status = NFS4ERR_INVAL; 1580 goto out; 1581 } 1582 1583 if (rdonly4(cs->exi, cs->vp, req)) { 1584 *cs->statusp = resp->status = NFS4ERR_ROFS; 1585 goto out; 1586 } 1587 1588 /* 1589 * Name of newly created object 1590 */ 1591 nm = utf8_to_fn(&args->objname, &len, NULL); 1592 if (nm == NULL) { 1593 *cs->statusp = resp->status = NFS4ERR_INVAL; 1594 goto out; 1595 } 1596 1597 if (len > MAXNAMELEN) { 1598 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1599 kmem_free(nm, len); 1600 goto out; 1601 } 1602 1603 /* If necessary, convert to UTF-8 for poorly behaved clients */ 1604 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1605 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1606 MAXPATHLEN + 1); 1607 1608 if (name == NULL) { 1609 *cs->statusp = resp->status = NFS4ERR_INVAL; 1610 kmem_free(nm, len); 1611 goto out; 1612 } 1613 1614 resp->attrset = 0; 1615 1616 sarg.sbp = &sb; 1617 nfs4_ntov_table_init(&ntov); 1618 1619 status = do_rfs4_set_attrs(&resp->attrset, 1620 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1621 1622 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1623 status = NFS4ERR_INVAL; 1624 1625 if (status != NFS4_OK) { 1626 *cs->statusp = resp->status = status; 1627 kmem_free(nm, len); 1628 nfs4_ntov_table_free(&ntov, &sarg); 1629 resp->attrset = 0; 1630 goto out; 1631 } 1632 1633 /* Get "before" change value */ 1634 bva.va_mask = AT_CTIME|AT_SEQ; 1635 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1636 if (error) { 1637 *cs->statusp = resp->status = puterrno4(error); 1638 kmem_free(nm, len); 1639 nfs4_ntov_table_free(&ntov, &sarg); 1640 resp->attrset = 0; 1641 goto out; 1642 } 1643 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1644 1645 vap = sarg.vap; 1646 1647 /* 1648 * Set default initial values for attributes when not specified 1649 * in createattrs. 1650 */ 1651 if ((vap->va_mask & AT_UID) == 0) { 1652 vap->va_uid = crgetuid(cr); 1653 vap->va_mask |= AT_UID; 1654 } 1655 if ((vap->va_mask & AT_GID) == 0) { 1656 vap->va_gid = crgetgid(cr); 1657 vap->va_mask |= AT_GID; 1658 } 1659 1660 vap->va_mask |= AT_TYPE; 1661 switch (args->type) { 1662 case NF4DIR: 1663 vap->va_type = VDIR; 1664 if ((vap->va_mask & AT_MODE) == 0) { 1665 vap->va_mode = 0700; /* default: owner rwx only */ 1666 vap->va_mask |= AT_MODE; 1667 } 1668 error = VOP_MKDIR(dvp, nm, vap, &vp, cr, NULL, 0, NULL); 1669 if (error) 1670 break; 1671 1672 /* 1673 * Get the initial "after" sequence number, if it fails, 1674 * set to zero 1675 */ 1676 iva.va_mask = AT_SEQ; 1677 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1678 iva.va_seq = 0; 1679 break; 1680 case NF4LNK: 1681 vap->va_type = VLNK; 1682 if ((vap->va_mask & AT_MODE) == 0) { 1683 vap->va_mode = 0700; /* default: owner rwx only */ 1684 vap->va_mask |= AT_MODE; 1685 } 1686 1687 /* 1688 * symlink names must be treated as data 1689 */ 1690 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1691 1692 if (lnm == NULL) { 1693 *cs->statusp = resp->status = NFS4ERR_INVAL; 1694 if (name != nm) 1695 kmem_free(name, MAXPATHLEN + 1); 1696 kmem_free(nm, len); 1697 nfs4_ntov_table_free(&ntov, &sarg); 1698 resp->attrset = 0; 1699 goto out; 1700 } 1701 1702 if (llen > MAXPATHLEN) { 1703 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1704 if (name != nm) 1705 kmem_free(name, MAXPATHLEN + 1); 1706 kmem_free(nm, len); 1707 kmem_free(lnm, llen); 1708 nfs4_ntov_table_free(&ntov, &sarg); 1709 resp->attrset = 0; 1710 goto out; 1711 } 1712 1713 lname = nfscmd_convname(ca, cs->exi, lnm, 1714 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1715 1716 if (lname == NULL) { 1717 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1718 if (name != nm) 1719 kmem_free(name, MAXPATHLEN + 1); 1720 kmem_free(nm, len); 1721 kmem_free(lnm, llen); 1722 nfs4_ntov_table_free(&ntov, &sarg); 1723 resp->attrset = 0; 1724 goto out; 1725 } 1726 1727 error = VOP_SYMLINK(dvp, nm, vap, lnm, cr, NULL, 0); 1728 if (lname != lnm) 1729 kmem_free(lname, MAXPATHLEN + 1); 1730 if (lnm != NULL) 1731 kmem_free(lnm, llen); 1732 if (error) 1733 break; 1734 1735 /* 1736 * Get the initial "after" sequence number, if it fails, 1737 * set to zero 1738 */ 1739 iva.va_mask = AT_SEQ; 1740 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1741 iva.va_seq = 0; 1742 1743 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, 1744 NULL, NULL, NULL); 1745 if (error) 1746 break; 1747 1748 /* 1749 * va_seq is not safe over VOP calls, check it again 1750 * if it has changed zero out iva to force atomic = FALSE. 1751 */ 1752 iva2.va_mask = AT_SEQ; 1753 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1754 iva2.va_seq != iva.va_seq) 1755 iva.va_seq = 0; 1756 break; 1757 default: 1758 /* 1759 * probably a special file. 1760 */ 1761 if ((vap->va_mask & AT_MODE) == 0) { 1762 vap->va_mode = 0600; /* default: owner rw only */ 1763 vap->va_mask |= AT_MODE; 1764 } 1765 syncval = FNODSYNC; 1766 /* 1767 * We know this will only generate one VOP call 1768 */ 1769 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, nm); 1770 1771 if (vp == NULL) { 1772 if (name != nm) 1773 kmem_free(name, MAXPATHLEN + 1); 1774 kmem_free(nm, len); 1775 nfs4_ntov_table_free(&ntov, &sarg); 1776 resp->attrset = 0; 1777 goto out; 1778 } 1779 1780 /* 1781 * Get the initial "after" sequence number, if it fails, 1782 * set to zero 1783 */ 1784 iva.va_mask = AT_SEQ; 1785 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1786 iva.va_seq = 0; 1787 1788 break; 1789 } 1790 if (name != nm) 1791 kmem_free(name, MAXPATHLEN + 1); 1792 kmem_free(nm, len); 1793 1794 if (error) { 1795 *cs->statusp = resp->status = puterrno4(error); 1796 } 1797 1798 /* 1799 * Force modified data and metadata out to stable storage. 1800 */ 1801 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1802 1803 if (resp->status != NFS4_OK) { 1804 if (vp != NULL) 1805 VN_RELE(vp); 1806 nfs4_ntov_table_free(&ntov, &sarg); 1807 resp->attrset = 0; 1808 goto out; 1809 } 1810 1811 /* 1812 * Finish setup of cinfo response, "before" value already set. 1813 * Get "after" change value, if it fails, simply return the 1814 * before value. 1815 */ 1816 ava.va_mask = AT_CTIME|AT_SEQ; 1817 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1818 ava.va_ctime = bva.va_ctime; 1819 ava.va_seq = 0; 1820 } 1821 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1822 1823 /* 1824 * True verification that object was created with correct 1825 * attrs is impossible. The attrs could have been changed 1826 * immediately after object creation. If attributes did 1827 * not verify, the only recourse for the server is to 1828 * destroy the object. Maybe if some attrs (like gid) 1829 * are set incorrectly, the object should be destroyed; 1830 * however, seems bad as a default policy. Do we really 1831 * want to destroy an object over one of the times not 1832 * verifying correctly? For these reasons, the server 1833 * currently sets bits in attrset for createattrs 1834 * that were set; however, no verification is done. 1835 * 1836 * vmask_to_nmask accounts for vattr bits set on create 1837 * [do_rfs4_set_attrs() only sets resp bits for 1838 * non-vattr/vfs bits.] 1839 * Mask off any bits set by default so as not to return 1840 * more attrset bits than were requested in createattrs 1841 */ 1842 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1843 resp->attrset &= args->createattrs.attrmask; 1844 nfs4_ntov_table_free(&ntov, &sarg); 1845 1846 error = makefh4(&cs->fh, vp, cs->exi); 1847 if (error) { 1848 *cs->statusp = resp->status = puterrno4(error); 1849 } 1850 1851 /* 1852 * The cinfo.atomic = TRUE only if we got no errors, we have 1853 * non-zero va_seq's, and it has incremented by exactly one 1854 * during the creation and it didn't change during the VOP_LOOKUP 1855 * or VOP_FSYNC. 1856 */ 1857 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1858 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1859 resp->cinfo.atomic = TRUE; 1860 else 1861 resp->cinfo.atomic = FALSE; 1862 1863 /* 1864 * Force modified metadata out to stable storage. 1865 * 1866 * if a underlying vp exists, pass it to VOP_FSYNC 1867 */ 1868 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1869 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1870 else 1871 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1872 1873 if (resp->status != NFS4_OK) { 1874 VN_RELE(vp); 1875 goto out; 1876 } 1877 if (cs->vp) 1878 VN_RELE(cs->vp); 1879 1880 cs->vp = vp; 1881 *cs->statusp = resp->status = NFS4_OK; 1882 out: 1883 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1884 CREATE4res *, resp); 1885 } 1886 1887 /*ARGSUSED*/ 1888 static void 1889 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1890 struct compound_state *cs) 1891 { 1892 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1893 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1894 1895 rfs4_op_inval(argop, resop, req, cs); 1896 1897 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1898 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1899 } 1900 1901 /*ARGSUSED*/ 1902 static void 1903 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1904 struct compound_state *cs) 1905 { 1906 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1907 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1908 rfs4_deleg_state_t *dsp; 1909 nfsstat4 status; 1910 1911 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1912 DELEGRETURN4args *, args); 1913 1914 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1915 resp->status = *cs->statusp = status; 1916 if (status != NFS4_OK) 1917 goto out; 1918 1919 /* Ensure specified filehandle matches */ 1920 if (cs->vp != dsp->finfo->vp) { 1921 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1922 } else 1923 rfs4_return_deleg(dsp, FALSE); 1924 1925 rfs4_update_lease(dsp->client); 1926 1927 rfs4_deleg_state_rele(dsp); 1928 out: 1929 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1930 DELEGRETURN4res *, resp); 1931 } 1932 1933 /* 1934 * Check to see if a given "flavor" is an explicitly shared flavor. 1935 * The assumption of this routine is the "flavor" is already a valid 1936 * flavor in the secinfo list of "exi". 1937 * 1938 * e.g. 1939 * # share -o sec=flavor1 /export 1940 * # share -o sec=flavor2 /export/home 1941 * 1942 * flavor2 is not an explicitly shared flavor for /export, 1943 * however it is in the secinfo list for /export thru the 1944 * server namespace setup. 1945 */ 1946 int 1947 is_exported_sec(int flavor, struct exportinfo *exi) 1948 { 1949 int i; 1950 struct secinfo *sp; 1951 1952 sp = exi->exi_export.ex_secinfo; 1953 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1954 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1955 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1956 return (SEC_REF_EXPORTED(&sp[i])); 1957 } 1958 } 1959 1960 /* Should not reach this point based on the assumption */ 1961 return (0); 1962 } 1963 1964 /* 1965 * Check if the security flavor used in the request matches what is 1966 * required at the export point or at the root pseudo node (exi_root). 1967 * 1968 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1969 * 1970 */ 1971 static int 1972 secinfo_match_or_authnone(struct compound_state *cs) 1973 { 1974 int i; 1975 struct secinfo *sp; 1976 1977 /* 1978 * Check cs->nfsflavor (from the request) against 1979 * the current export data in cs->exi. 1980 */ 1981 sp = cs->exi->exi_export.ex_secinfo; 1982 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1983 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1984 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1985 return (1); 1986 } 1987 1988 return (0); 1989 } 1990 1991 /* 1992 * Check the access authority for the client and return the correct error. 1993 */ 1994 nfsstat4 1995 call_checkauth4(struct compound_state *cs, struct svc_req *req) 1996 { 1997 int authres; 1998 1999 /* 2000 * First, check if the security flavor used in the request 2001 * are among the flavors set in the server namespace. 2002 */ 2003 if (!secinfo_match_or_authnone(cs)) { 2004 *cs->statusp = NFS4ERR_WRONGSEC; 2005 return (*cs->statusp); 2006 } 2007 2008 authres = checkauth4(cs, req); 2009 2010 if (authres > 0) { 2011 *cs->statusp = NFS4_OK; 2012 if (! (cs->access & CS_ACCESS_LIMITED)) 2013 cs->access = CS_ACCESS_OK; 2014 } else if (authres == 0) { 2015 *cs->statusp = NFS4ERR_ACCESS; 2016 } else if (authres == -2) { 2017 *cs->statusp = NFS4ERR_WRONGSEC; 2018 } else { 2019 *cs->statusp = NFS4ERR_DELAY; 2020 } 2021 return (*cs->statusp); 2022 } 2023 2024 /* 2025 * bitmap4_to_attrmask is called by getattr and readdir. 2026 * It sets up the vattr mask and determines whether vfsstat call is needed 2027 * based on the input bitmap. 2028 * Returns nfsv4 status. 2029 */ 2030 static nfsstat4 2031 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2032 { 2033 int i; 2034 uint_t va_mask; 2035 struct statvfs64 *sbp = sargp->sbp; 2036 2037 sargp->sbp = NULL; 2038 sargp->flag = 0; 2039 sargp->rdattr_error = NFS4_OK; 2040 sargp->mntdfid_set = FALSE; 2041 if (sargp->cs->vp) 2042 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2043 FH4_ATTRDIR | FH4_NAMEDATTR); 2044 else 2045 sargp->xattr = 0; 2046 2047 /* 2048 * Set rdattr_error_req to true if return error per 2049 * failed entry rather than fail the readdir. 2050 */ 2051 if (breq & FATTR4_RDATTR_ERROR_MASK) 2052 sargp->rdattr_error_req = 1; 2053 else 2054 sargp->rdattr_error_req = 0; 2055 2056 /* 2057 * generate the va_mask 2058 * Handle the easy cases first 2059 */ 2060 switch (breq) { 2061 case NFS4_NTOV_ATTR_MASK: 2062 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2063 return (NFS4_OK); 2064 2065 case NFS4_FS_ATTR_MASK: 2066 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2067 sargp->sbp = sbp; 2068 return (NFS4_OK); 2069 2070 case NFS4_NTOV_ATTR_CACHE_MASK: 2071 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2072 return (NFS4_OK); 2073 2074 case FATTR4_LEASE_TIME_MASK: 2075 sargp->vap->va_mask = 0; 2076 return (NFS4_OK); 2077 2078 default: 2079 va_mask = 0; 2080 for (i = 0; i < nfs4_ntov_map_size; i++) { 2081 if ((breq & nfs4_ntov_map[i].fbit) && 2082 nfs4_ntov_map[i].vbit) 2083 va_mask |= nfs4_ntov_map[i].vbit; 2084 } 2085 2086 /* 2087 * Check is vfsstat is needed 2088 */ 2089 if (breq & NFS4_FS_ATTR_MASK) 2090 sargp->sbp = sbp; 2091 2092 sargp->vap->va_mask = va_mask; 2093 return (NFS4_OK); 2094 } 2095 /* NOTREACHED */ 2096 } 2097 2098 /* 2099 * bitmap4_get_sysattrs is called by getattr and readdir. 2100 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2101 * Returns nfsv4 status. 2102 */ 2103 static nfsstat4 2104 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2105 { 2106 int error; 2107 struct compound_state *cs = sargp->cs; 2108 vnode_t *vp = cs->vp; 2109 2110 if (sargp->sbp != NULL) { 2111 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2112 sargp->sbp = NULL; /* to identify error */ 2113 return (puterrno4(error)); 2114 } 2115 } 2116 2117 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2118 } 2119 2120 static void 2121 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2122 { 2123 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2124 KM_SLEEP); 2125 ntovp->attrcnt = 0; 2126 ntovp->vfsstat = FALSE; 2127 } 2128 2129 static void 2130 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2131 struct nfs4_svgetit_arg *sargp) 2132 { 2133 int i; 2134 union nfs4_attr_u *na; 2135 uint8_t *amap; 2136 2137 /* 2138 * XXX Should do the same checks for whether the bit is set 2139 */ 2140 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2141 i < ntovp->attrcnt; i++, na++, amap++) { 2142 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2143 NFS4ATTR_FREEIT, sargp, na); 2144 } 2145 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2146 /* 2147 * xdr_free for getattr will be done later 2148 */ 2149 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2150 i < ntovp->attrcnt; i++, na++, amap++) { 2151 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2152 } 2153 } 2154 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2155 } 2156 2157 /* 2158 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2159 */ 2160 static nfsstat4 2161 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2162 struct nfs4_svgetit_arg *sargp) 2163 { 2164 int error = 0; 2165 int i, k; 2166 struct nfs4_ntov_table ntov; 2167 XDR xdr; 2168 ulong_t xdr_size; 2169 char *xdr_attrs; 2170 nfsstat4 status = NFS4_OK; 2171 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2172 union nfs4_attr_u *na; 2173 uint8_t *amap; 2174 2175 sargp->op = NFS4ATTR_GETIT; 2176 sargp->flag = 0; 2177 2178 fattrp->attrmask = 0; 2179 /* if no bits requested, then return empty fattr4 */ 2180 if (breq == 0) { 2181 fattrp->attrlist4_len = 0; 2182 fattrp->attrlist4 = NULL; 2183 return (NFS4_OK); 2184 } 2185 2186 /* 2187 * return NFS4ERR_INVAL when client requests write-only attrs 2188 */ 2189 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2190 return (NFS4ERR_INVAL); 2191 2192 nfs4_ntov_table_init(&ntov); 2193 na = ntov.na; 2194 amap = ntov.amap; 2195 2196 /* 2197 * Now loop to get or verify the attrs 2198 */ 2199 for (i = 0; i < nfs4_ntov_map_size; i++) { 2200 if (breq & nfs4_ntov_map[i].fbit) { 2201 if ((*nfs4_ntov_map[i].sv_getit)( 2202 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2203 2204 error = (*nfs4_ntov_map[i].sv_getit)( 2205 NFS4ATTR_GETIT, sargp, na); 2206 2207 /* 2208 * Possible error values: 2209 * >0 if sv_getit failed to 2210 * get the attr; 0 if succeeded; 2211 * <0 if rdattr_error and the 2212 * attribute cannot be returned. 2213 */ 2214 if (error && !(sargp->rdattr_error_req)) 2215 goto done; 2216 /* 2217 * If error then just for entry 2218 */ 2219 if (error == 0) { 2220 fattrp->attrmask |= 2221 nfs4_ntov_map[i].fbit; 2222 *amap++ = 2223 (uint8_t)nfs4_ntov_map[i].nval; 2224 na++; 2225 (ntov.attrcnt)++; 2226 } else if ((error > 0) && 2227 (sargp->rdattr_error == NFS4_OK)) { 2228 sargp->rdattr_error = puterrno4(error); 2229 } 2230 error = 0; 2231 } 2232 } 2233 } 2234 2235 /* 2236 * If rdattr_error was set after the return value for it was assigned, 2237 * update it. 2238 */ 2239 if (prev_rdattr_error != sargp->rdattr_error) { 2240 na = ntov.na; 2241 amap = ntov.amap; 2242 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2243 k = *amap; 2244 if (k < FATTR4_RDATTR_ERROR) { 2245 continue; 2246 } 2247 if ((k == FATTR4_RDATTR_ERROR) && 2248 ((*nfs4_ntov_map[k].sv_getit)( 2249 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2250 2251 (void) (*nfs4_ntov_map[k].sv_getit)( 2252 NFS4ATTR_GETIT, sargp, na); 2253 } 2254 break; 2255 } 2256 } 2257 2258 xdr_size = 0; 2259 na = ntov.na; 2260 amap = ntov.amap; 2261 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2262 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2263 } 2264 2265 fattrp->attrlist4_len = xdr_size; 2266 if (xdr_size) { 2267 /* freed by rfs4_op_getattr_free() */ 2268 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2269 2270 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2271 2272 na = ntov.na; 2273 amap = ntov.amap; 2274 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2275 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2276 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2277 int, *amap); 2278 status = NFS4ERR_SERVERFAULT; 2279 break; 2280 } 2281 } 2282 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2283 } else { 2284 fattrp->attrlist4 = NULL; 2285 } 2286 done: 2287 2288 nfs4_ntov_table_free(&ntov, sargp); 2289 2290 if (error != 0) 2291 status = puterrno4(error); 2292 2293 return (status); 2294 } 2295 2296 /* ARGSUSED */ 2297 static void 2298 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2299 struct compound_state *cs) 2300 { 2301 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2302 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2303 struct nfs4_svgetit_arg sarg; 2304 struct statvfs64 sb; 2305 nfsstat4 status; 2306 2307 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2308 GETATTR4args *, args); 2309 2310 if (cs->vp == NULL) { 2311 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2312 goto out; 2313 } 2314 2315 if (cs->access == CS_ACCESS_DENIED) { 2316 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2317 goto out; 2318 } 2319 2320 sarg.sbp = &sb; 2321 sarg.cs = cs; 2322 2323 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2324 if (status == NFS4_OK) { 2325 status = bitmap4_get_sysattrs(&sarg); 2326 if (status == NFS4_OK) 2327 status = do_rfs4_op_getattr(args->attr_request, 2328 &resp->obj_attributes, &sarg); 2329 } 2330 *cs->statusp = resp->status = status; 2331 out: 2332 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2333 GETATTR4res *, resp); 2334 } 2335 2336 static void 2337 rfs4_op_getattr_free(nfs_resop4 *resop) 2338 { 2339 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2340 2341 nfs4_fattr4_free(&resp->obj_attributes); 2342 } 2343 2344 /* ARGSUSED */ 2345 static void 2346 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2347 struct compound_state *cs) 2348 { 2349 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2350 2351 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2352 2353 if (cs->vp == NULL) { 2354 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2355 goto out; 2356 } 2357 if (cs->access == CS_ACCESS_DENIED) { 2358 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2359 goto out; 2360 } 2361 2362 resp->object.nfs_fh4_val = 2363 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2364 nfs_fh4_copy(&cs->fh, &resp->object); 2365 *cs->statusp = resp->status = NFS4_OK; 2366 out: 2367 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2368 GETFH4res *, resp); 2369 } 2370 2371 static void 2372 rfs4_op_getfh_free(nfs_resop4 *resop) 2373 { 2374 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2375 2376 if (resp->status == NFS4_OK && 2377 resp->object.nfs_fh4_val != NULL) { 2378 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2379 resp->object.nfs_fh4_val = NULL; 2380 resp->object.nfs_fh4_len = 0; 2381 } 2382 } 2383 2384 /* 2385 * illegal: args: void 2386 * res : status (NFS4ERR_OP_ILLEGAL) 2387 */ 2388 /* ARGSUSED */ 2389 static void 2390 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2391 struct svc_req *req, struct compound_state *cs) 2392 { 2393 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2394 2395 resop->resop = OP_ILLEGAL; 2396 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2397 } 2398 2399 /* 2400 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2401 * res: status. If success - CURRENT_FH unchanged, return change_info 2402 */ 2403 /* ARGSUSED */ 2404 static void 2405 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2406 struct compound_state *cs) 2407 { 2408 LINK4args *args = &argop->nfs_argop4_u.oplink; 2409 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2410 int error; 2411 vnode_t *vp; 2412 vnode_t *dvp; 2413 struct vattr bdva, idva, adva; 2414 char *nm; 2415 uint_t len; 2416 struct sockaddr *ca; 2417 char *name = NULL; 2418 2419 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2420 LINK4args *, args); 2421 2422 /* SAVED_FH: source object */ 2423 vp = cs->saved_vp; 2424 if (vp == NULL) { 2425 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2426 goto out; 2427 } 2428 2429 /* CURRENT_FH: target directory */ 2430 dvp = cs->vp; 2431 if (dvp == NULL) { 2432 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2433 goto out; 2434 } 2435 2436 /* 2437 * If there is a non-shared filesystem mounted on this vnode, 2438 * do not allow to link any file in this directory. 2439 */ 2440 if (vn_ismntpt(dvp)) { 2441 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2442 goto out; 2443 } 2444 2445 if (cs->access == CS_ACCESS_DENIED) { 2446 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2447 goto out; 2448 } 2449 2450 /* Check source object's type validity */ 2451 if (vp->v_type == VDIR) { 2452 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2453 goto out; 2454 } 2455 2456 /* Check target directory's type */ 2457 if (dvp->v_type != VDIR) { 2458 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2459 goto out; 2460 } 2461 2462 if (cs->saved_exi != cs->exi) { 2463 *cs->statusp = resp->status = NFS4ERR_XDEV; 2464 goto out; 2465 } 2466 2467 if (!utf8_dir_verify(&args->newname)) { 2468 *cs->statusp = resp->status = NFS4ERR_INVAL; 2469 goto out; 2470 } 2471 2472 nm = utf8_to_fn(&args->newname, &len, NULL); 2473 if (nm == NULL) { 2474 *cs->statusp = resp->status = NFS4ERR_INVAL; 2475 goto out; 2476 } 2477 2478 if (len > MAXNAMELEN) { 2479 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2480 kmem_free(nm, len); 2481 goto out; 2482 } 2483 2484 if (rdonly4(cs->exi, cs->vp, req)) { 2485 *cs->statusp = resp->status = NFS4ERR_ROFS; 2486 kmem_free(nm, len); 2487 goto out; 2488 } 2489 2490 /* Get "before" change value */ 2491 bdva.va_mask = AT_CTIME|AT_SEQ; 2492 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2493 if (error) { 2494 *cs->statusp = resp->status = puterrno4(error); 2495 kmem_free(nm, len); 2496 goto out; 2497 } 2498 2499 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2500 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2501 MAXPATHLEN + 1); 2502 2503 if (name == NULL) { 2504 *cs->statusp = resp->status = NFS4ERR_INVAL; 2505 kmem_free(nm, len); 2506 goto out; 2507 } 2508 2509 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2510 2511 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2512 2513 if (nm != name) 2514 kmem_free(name, MAXPATHLEN + 1); 2515 kmem_free(nm, len); 2516 2517 /* 2518 * Get the initial "after" sequence number, if it fails, set to zero 2519 */ 2520 idva.va_mask = AT_SEQ; 2521 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2522 idva.va_seq = 0; 2523 2524 /* 2525 * Force modified data and metadata out to stable storage. 2526 */ 2527 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2528 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2529 2530 if (error) { 2531 *cs->statusp = resp->status = puterrno4(error); 2532 goto out; 2533 } 2534 2535 /* 2536 * Get "after" change value, if it fails, simply return the 2537 * before value. 2538 */ 2539 adva.va_mask = AT_CTIME|AT_SEQ; 2540 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2541 adva.va_ctime = bdva.va_ctime; 2542 adva.va_seq = 0; 2543 } 2544 2545 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2546 2547 /* 2548 * The cinfo.atomic = TRUE only if we have 2549 * non-zero va_seq's, and it has incremented by exactly one 2550 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2551 */ 2552 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2553 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2554 resp->cinfo.atomic = TRUE; 2555 else 2556 resp->cinfo.atomic = FALSE; 2557 2558 *cs->statusp = resp->status = NFS4_OK; 2559 out: 2560 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2561 LINK4res *, resp); 2562 } 2563 2564 /* 2565 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2566 */ 2567 2568 /* ARGSUSED */ 2569 static nfsstat4 2570 do_rfs4_op_lookup(char *nm, uint_t buflen, struct svc_req *req, 2571 struct compound_state *cs) 2572 { 2573 int error; 2574 int different_export = 0; 2575 vnode_t *vp, *tvp, *pre_tvp = NULL, *oldvp = NULL; 2576 struct exportinfo *exi = NULL, *pre_exi = NULL; 2577 nfsstat4 stat; 2578 fid_t fid; 2579 int attrdir, dotdot, walk; 2580 bool_t is_newvp = FALSE; 2581 2582 if (cs->vp->v_flag & V_XATTRDIR) { 2583 attrdir = 1; 2584 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2585 } else { 2586 attrdir = 0; 2587 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2588 } 2589 2590 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2591 2592 /* 2593 * If dotdotting, then need to check whether it's 2594 * above the root of a filesystem, or above an 2595 * export point. 2596 */ 2597 if (dotdot) { 2598 2599 /* 2600 * If dotdotting at the root of a filesystem, then 2601 * need to traverse back to the mounted-on filesystem 2602 * and do the dotdot lookup there. 2603 */ 2604 if (cs->vp->v_flag & VROOT) { 2605 2606 /* 2607 * If at the system root, then can 2608 * go up no further. 2609 */ 2610 if (VN_CMP(cs->vp, rootdir)) 2611 return (puterrno4(ENOENT)); 2612 2613 /* 2614 * Traverse back to the mounted-on filesystem 2615 */ 2616 cs->vp = untraverse(cs->vp); 2617 2618 /* 2619 * Set the different_export flag so we remember 2620 * to pick up a new exportinfo entry for 2621 * this new filesystem. 2622 */ 2623 different_export = 1; 2624 } else { 2625 2626 /* 2627 * If dotdotting above an export point then set 2628 * the different_export to get new export info. 2629 */ 2630 different_export = nfs_exported(cs->exi, cs->vp); 2631 } 2632 } 2633 2634 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2635 NULL, NULL, NULL); 2636 if (error) 2637 return (puterrno4(error)); 2638 2639 /* 2640 * If the vnode is in a pseudo filesystem, check whether it is visible. 2641 * 2642 * XXX if the vnode is a symlink and it is not visible in 2643 * a pseudo filesystem, return ENOENT (not following symlink). 2644 * V4 client can not mount such symlink. This is a regression 2645 * from V2/V3. 2646 * 2647 * In the same exported filesystem, if the security flavor used 2648 * is not an explicitly shared flavor, limit the view to the visible 2649 * list entries only. This is not a WRONGSEC case because it's already 2650 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2651 */ 2652 if (!different_export && 2653 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2654 cs->access & CS_ACCESS_LIMITED)) { 2655 if (! nfs_visible(cs->exi, vp, &different_export)) { 2656 VN_RELE(vp); 2657 return (puterrno4(ENOENT)); 2658 } 2659 } 2660 2661 /* 2662 * If it's a mountpoint, then traverse it. 2663 */ 2664 if (vn_ismntpt(vp)) { 2665 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2666 pre_tvp = vp; /* save pre-traversed vnode */ 2667 2668 /* 2669 * hold pre_tvp to counteract rele by traverse. We will 2670 * need pre_tvp below if checkexport4 fails 2671 */ 2672 VN_HOLD(pre_tvp); 2673 tvp = vp; 2674 if ((error = traverse(&tvp)) != 0) { 2675 VN_RELE(vp); 2676 VN_RELE(pre_tvp); 2677 return (puterrno4(error)); 2678 } 2679 vp = tvp; 2680 different_export = 1; 2681 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2682 /* 2683 * The vfsp comparison is to handle the case where 2684 * a LOFS mount is shared. lo_lookup traverses mount points, 2685 * and NFS is unaware of local fs transistions because 2686 * v_vfsmountedhere isn't set. For this special LOFS case, 2687 * the dir and the obj returned by lookup will have different 2688 * vfs ptrs. 2689 */ 2690 different_export = 1; 2691 } 2692 2693 if (different_export) { 2694 2695 bzero(&fid, sizeof (fid)); 2696 fid.fid_len = MAXFIDSZ; 2697 error = vop_fid_pseudo(vp, &fid); 2698 if (error) { 2699 VN_RELE(vp); 2700 if (pre_tvp) 2701 VN_RELE(pre_tvp); 2702 return (puterrno4(error)); 2703 } 2704 2705 if (dotdot) 2706 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2707 else 2708 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2709 2710 if (exi == NULL) { 2711 if (pre_tvp) { 2712 /* 2713 * If this vnode is a mounted-on vnode, 2714 * but the mounted-on file system is not 2715 * exported, send back the filehandle for 2716 * the mounted-on vnode, not the root of 2717 * the mounted-on file system. 2718 */ 2719 VN_RELE(vp); 2720 vp = pre_tvp; 2721 exi = pre_exi; 2722 } else { 2723 VN_RELE(vp); 2724 return (puterrno4(EACCES)); 2725 } 2726 } else if (pre_tvp) { 2727 /* we're done with pre_tvp now. release extra hold */ 2728 VN_RELE(pre_tvp); 2729 } 2730 2731 cs->exi = exi; 2732 2733 /* 2734 * Now we do a checkauth4. The reason is that 2735 * this client/user may not have access to the new 2736 * exported file system, and if he does, 2737 * the client/user may be mapped to a different uid. 2738 * 2739 * We start with a new cr, because the checkauth4 done 2740 * in the PUT*FH operation over wrote the cred's uid, 2741 * gid, etc, and we want the real thing before calling 2742 * checkauth4() 2743 */ 2744 crfree(cs->cr); 2745 cs->cr = crdup(cs->basecr); 2746 2747 if (cs->vp) 2748 oldvp = cs->vp; 2749 cs->vp = vp; 2750 is_newvp = TRUE; 2751 2752 stat = call_checkauth4(cs, req); 2753 if (stat != NFS4_OK) { 2754 VN_RELE(cs->vp); 2755 cs->vp = oldvp; 2756 return (stat); 2757 } 2758 } 2759 2760 /* 2761 * After various NFS checks, do a label check on the path 2762 * component. The label on this path should either be the 2763 * global zone's label or a zone's label. We are only 2764 * interested in the zone's label because exported files 2765 * in global zone is accessible (though read-only) to 2766 * clients. The exportability/visibility check is already 2767 * done before reaching this code. 2768 */ 2769 if (is_system_labeled()) { 2770 bslabel_t *clabel; 2771 2772 ASSERT(req->rq_label != NULL); 2773 clabel = req->rq_label; 2774 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2775 "got client label from request(1)", struct svc_req *, req); 2776 2777 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2778 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 2779 error = EACCES; 2780 goto err_out; 2781 } 2782 } else { 2783 /* 2784 * We grant access to admin_low label clients 2785 * only if the client is trusted, i.e. also 2786 * running Solaris Trusted Extension. 2787 */ 2788 struct sockaddr *ca; 2789 int addr_type; 2790 void *ipaddr; 2791 tsol_tpc_t *tp; 2792 2793 ca = (struct sockaddr *)svc_getrpccaller( 2794 req->rq_xprt)->buf; 2795 if (ca->sa_family == AF_INET) { 2796 addr_type = IPV4_VERSION; 2797 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2798 } else if (ca->sa_family == AF_INET6) { 2799 addr_type = IPV6_VERSION; 2800 ipaddr = &((struct sockaddr_in6 *) 2801 ca)->sin6_addr; 2802 } 2803 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2804 if (tp == NULL || tp->tpc_tp.tp_doi != 2805 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2806 SUN_CIPSO) { 2807 if (tp != NULL) 2808 TPC_RELE(tp); 2809 error = EACCES; 2810 goto err_out; 2811 } 2812 TPC_RELE(tp); 2813 } 2814 } 2815 2816 error = makefh4(&cs->fh, vp, cs->exi); 2817 2818 err_out: 2819 if (error) { 2820 if (is_newvp) { 2821 VN_RELE(cs->vp); 2822 cs->vp = oldvp; 2823 } else 2824 VN_RELE(vp); 2825 return (puterrno4(error)); 2826 } 2827 2828 if (!is_newvp) { 2829 if (cs->vp) 2830 VN_RELE(cs->vp); 2831 cs->vp = vp; 2832 } else if (oldvp) 2833 VN_RELE(oldvp); 2834 2835 /* 2836 * if did lookup on attrdir and didn't lookup .., set named 2837 * attr fh flag 2838 */ 2839 if (attrdir && ! dotdot) 2840 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2841 2842 /* Assume false for now, open proc will set this */ 2843 cs->mandlock = FALSE; 2844 2845 return (NFS4_OK); 2846 } 2847 2848 /* ARGSUSED */ 2849 static void 2850 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2851 struct compound_state *cs) 2852 { 2853 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2854 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2855 char *nm; 2856 uint_t len; 2857 struct sockaddr *ca; 2858 char *name = NULL; 2859 2860 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2861 LOOKUP4args *, args); 2862 2863 if (cs->vp == NULL) { 2864 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2865 goto out; 2866 } 2867 2868 if (cs->vp->v_type == VLNK) { 2869 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2870 goto out; 2871 } 2872 2873 if (cs->vp->v_type != VDIR) { 2874 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2875 goto out; 2876 } 2877 2878 if (!utf8_dir_verify(&args->objname)) { 2879 *cs->statusp = resp->status = NFS4ERR_INVAL; 2880 goto out; 2881 } 2882 2883 nm = utf8_to_str(&args->objname, &len, NULL); 2884 if (nm == NULL) { 2885 *cs->statusp = resp->status = NFS4ERR_INVAL; 2886 goto out; 2887 } 2888 2889 if (len > MAXNAMELEN) { 2890 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2891 kmem_free(nm, len); 2892 goto out; 2893 } 2894 2895 /* If necessary, convert to UTF-8 for illbehaved clients */ 2896 2897 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2898 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2899 MAXPATHLEN + 1); 2900 2901 if (name == NULL) { 2902 *cs->statusp = resp->status = NFS4ERR_INVAL; 2903 kmem_free(nm, len); 2904 goto out; 2905 } 2906 2907 *cs->statusp = resp->status = do_rfs4_op_lookup(name, len, req, cs); 2908 2909 if (name != nm) 2910 kmem_free(name, MAXPATHLEN + 1); 2911 kmem_free(nm, len); 2912 2913 out: 2914 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2915 LOOKUP4res *, resp); 2916 } 2917 2918 /* ARGSUSED */ 2919 static void 2920 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2921 struct compound_state *cs) 2922 { 2923 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2924 2925 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2926 2927 if (cs->vp == NULL) { 2928 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2929 goto out; 2930 } 2931 2932 if (cs->vp->v_type != VDIR) { 2933 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2934 goto out; 2935 } 2936 2937 *cs->statusp = resp->status = do_rfs4_op_lookup("..", 3, req, cs); 2938 2939 /* 2940 * From NFSV4 Specification, LOOKUPP should not check for 2941 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2942 */ 2943 if (resp->status == NFS4ERR_WRONGSEC) { 2944 *cs->statusp = resp->status = NFS4_OK; 2945 } 2946 2947 out: 2948 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2949 LOOKUPP4res *, resp); 2950 } 2951 2952 2953 /*ARGSUSED2*/ 2954 static void 2955 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2956 struct compound_state *cs) 2957 { 2958 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2959 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2960 vnode_t *avp = NULL; 2961 int lookup_flags = LOOKUP_XATTR, error; 2962 int exp_ro = 0; 2963 2964 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 2965 OPENATTR4args *, args); 2966 2967 if (cs->vp == NULL) { 2968 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2969 goto out; 2970 } 2971 2972 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 2973 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 2974 *cs->statusp = resp->status = puterrno4(ENOTSUP); 2975 goto out; 2976 } 2977 2978 /* 2979 * If file system supports passing ACE mask to VOP_ACCESS then 2980 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 2981 */ 2982 2983 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 2984 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 2985 V_ACE_MASK, cs->cr, NULL); 2986 else 2987 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 2988 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 2989 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 2990 2991 if (error) { 2992 *cs->statusp = resp->status = puterrno4(EACCES); 2993 goto out; 2994 } 2995 2996 /* 2997 * The CREATE_XATTR_DIR VOP flag cannot be specified if 2998 * the file system is exported read-only -- regardless of 2999 * createdir flag. Otherwise the attrdir would be created 3000 * (assuming server fs isn't mounted readonly locally). If 3001 * VOP_LOOKUP returns ENOENT in this case, the error will 3002 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3003 * because specfs has no VOP_LOOKUP op, so the macro would 3004 * return ENOSYS. EINVAL is returned by all (current) 3005 * Solaris file system implementations when any of their 3006 * restrictions are violated (xattr(dir) can't have xattrdir). 3007 * Returning NOTSUPP is more appropriate in this case 3008 * because the object will never be able to have an attrdir. 3009 */ 3010 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 3011 lookup_flags |= CREATE_XATTR_DIR; 3012 3013 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3014 NULL, NULL, NULL); 3015 3016 if (error) { 3017 if (error == ENOENT && args->createdir && exp_ro) 3018 *cs->statusp = resp->status = puterrno4(EROFS); 3019 else if (error == EINVAL || error == ENOSYS) 3020 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3021 else 3022 *cs->statusp = resp->status = puterrno4(error); 3023 goto out; 3024 } 3025 3026 ASSERT(avp->v_flag & V_XATTRDIR); 3027 3028 error = makefh4(&cs->fh, avp, cs->exi); 3029 3030 if (error) { 3031 VN_RELE(avp); 3032 *cs->statusp = resp->status = puterrno4(error); 3033 goto out; 3034 } 3035 3036 VN_RELE(cs->vp); 3037 cs->vp = avp; 3038 3039 /* 3040 * There is no requirement for an attrdir fh flag 3041 * because the attrdir has a vnode flag to distinguish 3042 * it from regular (non-xattr) directories. The 3043 * FH4_ATTRDIR flag is set for future sanity checks. 3044 */ 3045 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3046 *cs->statusp = resp->status = NFS4_OK; 3047 3048 out: 3049 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3050 OPENATTR4res *, resp); 3051 } 3052 3053 static int 3054 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3055 caller_context_t *ct) 3056 { 3057 int error; 3058 int i; 3059 clock_t delaytime; 3060 3061 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3062 3063 /* 3064 * Don't block on mandatory locks. If this routine returns 3065 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3066 */ 3067 uio->uio_fmode = FNONBLOCK; 3068 3069 for (i = 0; i < rfs4_maxlock_tries; i++) { 3070 3071 3072 if (direction == FREAD) { 3073 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3074 error = VOP_READ(vp, uio, ioflag, cred, ct); 3075 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3076 } else { 3077 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3078 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3079 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3080 } 3081 3082 if (error != EAGAIN) 3083 break; 3084 3085 if (i < rfs4_maxlock_tries - 1) { 3086 delay(delaytime); 3087 delaytime *= 2; 3088 } 3089 } 3090 3091 return (error); 3092 } 3093 3094 /* ARGSUSED */ 3095 static void 3096 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3097 struct compound_state *cs) 3098 { 3099 READ4args *args = &argop->nfs_argop4_u.opread; 3100 READ4res *resp = &resop->nfs_resop4_u.opread; 3101 int error; 3102 int verror; 3103 vnode_t *vp; 3104 struct vattr va; 3105 struct iovec iov; 3106 struct uio uio; 3107 u_offset_t offset; 3108 bool_t *deleg = &cs->deleg; 3109 nfsstat4 stat; 3110 int in_crit = 0; 3111 mblk_t *mp; 3112 int alloc_err = 0; 3113 caller_context_t ct; 3114 3115 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3116 READ4args, args); 3117 3118 vp = cs->vp; 3119 if (vp == NULL) { 3120 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3121 goto out; 3122 } 3123 if (cs->access == CS_ACCESS_DENIED) { 3124 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3125 goto out; 3126 } 3127 3128 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3129 deleg, TRUE, &ct)) != NFS4_OK) { 3130 *cs->statusp = resp->status = stat; 3131 goto out; 3132 } 3133 3134 /* 3135 * Enter the critical region before calling VOP_RWLOCK 3136 * to avoid a deadlock with write requests. 3137 */ 3138 if (nbl_need_check(vp)) { 3139 nbl_start_crit(vp, RW_READER); 3140 in_crit = 1; 3141 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3142 &ct)) { 3143 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3144 goto out; 3145 } 3146 } 3147 3148 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3149 deleg, TRUE, &ct)) != NFS4_OK) { 3150 *cs->statusp = resp->status = stat; 3151 goto out; 3152 } 3153 3154 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3155 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3156 3157 /* 3158 * If we can't get the attributes, then we can't do the 3159 * right access checking. So, we'll fail the request. 3160 */ 3161 if (verror) { 3162 *cs->statusp = resp->status = puterrno4(verror); 3163 goto out; 3164 } 3165 3166 if (vp->v_type != VREG) { 3167 *cs->statusp = resp->status = 3168 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3169 goto out; 3170 } 3171 3172 if (crgetuid(cs->cr) != va.va_uid && 3173 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3174 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3175 *cs->statusp = resp->status = puterrno4(error); 3176 goto out; 3177 } 3178 3179 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3180 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3181 goto out; 3182 } 3183 3184 offset = args->offset; 3185 if (offset >= va.va_size) { 3186 *cs->statusp = resp->status = NFS4_OK; 3187 resp->eof = TRUE; 3188 resp->data_len = 0; 3189 resp->data_val = NULL; 3190 resp->mblk = NULL; 3191 /* RDMA */ 3192 resp->wlist = args->wlist; 3193 resp->wlist_len = resp->data_len; 3194 *cs->statusp = resp->status = NFS4_OK; 3195 goto out; 3196 } 3197 3198 if (args->count == 0) { 3199 *cs->statusp = resp->status = NFS4_OK; 3200 resp->eof = FALSE; 3201 resp->data_len = 0; 3202 resp->data_val = NULL; 3203 resp->mblk = NULL; 3204 /* RDMA */ 3205 resp->wlist = args->wlist; 3206 resp->wlist_len = resp->data_len; 3207 goto out; 3208 } 3209 3210 /* 3211 * Do not allocate memory more than maximum allowed 3212 * transfer size 3213 */ 3214 if (args->count > rfs4_tsize(req)) 3215 args->count = rfs4_tsize(req); 3216 3217 /* 3218 * If returning data via RDMA Write, then grab the chunk list. If we 3219 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3220 */ 3221 if (args->wlist) { 3222 mp = NULL; 3223 (void) rdma_get_wchunk(req, &iov, args->wlist); 3224 } else { 3225 /* 3226 * mp will contain the data to be sent out in the read reply. 3227 * It will be freed after the reply has been sent. Let's 3228 * roundup the data to a BYTES_PER_XDR_UNIT multiple, so that 3229 * the call to xdrmblk_putmblk() never fails. If the first 3230 * alloc of the requested size fails, then decrease the size to 3231 * something more reasonable and wait for the allocation to 3232 * occur. 3233 */ 3234 mp = allocb(RNDUP(args->count), BPRI_MED); 3235 if (mp == NULL) { 3236 if (args->count > MAXBSIZE) 3237 args->count = MAXBSIZE; 3238 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3239 STR_NOSIG, &alloc_err); 3240 } 3241 ASSERT(mp != NULL); 3242 ASSERT(alloc_err == 0); 3243 3244 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3245 iov.iov_len = args->count; 3246 } 3247 3248 uio.uio_iov = &iov; 3249 uio.uio_iovcnt = 1; 3250 uio.uio_segflg = UIO_SYSSPACE; 3251 uio.uio_extflg = UIO_COPY_CACHED; 3252 uio.uio_loffset = args->offset; 3253 uio.uio_resid = args->count; 3254 3255 error = do_io(FREAD, vp, &uio, 0, cs->cr, &ct); 3256 3257 va.va_mask = AT_SIZE; 3258 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3259 3260 if (error) { 3261 freeb(mp); 3262 *cs->statusp = resp->status = puterrno4(error); 3263 goto out; 3264 } 3265 3266 *cs->statusp = resp->status = NFS4_OK; 3267 3268 ASSERT(uio.uio_resid >= 0); 3269 resp->data_len = args->count - uio.uio_resid; 3270 if (mp) { 3271 resp->data_val = (char *)mp->b_datap->db_base; 3272 } else { 3273 resp->data_val = (caddr_t)iov.iov_base; 3274 } 3275 resp->mblk = mp; 3276 3277 if (!verror && offset + resp->data_len == va.va_size) 3278 resp->eof = TRUE; 3279 else 3280 resp->eof = FALSE; 3281 3282 if (args->wlist) { 3283 if (!rdma_setup_read_data4(args, resp)) { 3284 *cs->statusp = resp->status = NFS4ERR_INVAL; 3285 } 3286 } else { 3287 resp->wlist = NULL; 3288 } 3289 3290 out: 3291 if (in_crit) 3292 nbl_end_crit(vp); 3293 3294 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3295 READ4res *, resp); 3296 } 3297 3298 static void 3299 rfs4_op_read_free(nfs_resop4 *resop) 3300 { 3301 READ4res *resp = &resop->nfs_resop4_u.opread; 3302 3303 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3304 freeb(resp->mblk); 3305 resp->mblk = NULL; 3306 resp->data_val = NULL; 3307 resp->data_len = 0; 3308 } 3309 } 3310 3311 static void 3312 rfs4_op_readdir_free(nfs_resop4 * resop) 3313 { 3314 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3315 3316 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3317 freeb(resp->mblk); 3318 resp->mblk = NULL; 3319 resp->data_len = 0; 3320 } 3321 } 3322 3323 3324 /* ARGSUSED */ 3325 static void 3326 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3327 struct compound_state *cs) 3328 { 3329 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3330 int error; 3331 vnode_t *vp; 3332 struct exportinfo *exi, *sav_exi; 3333 nfs_fh4_fmt_t *fh_fmtp; 3334 3335 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3336 3337 if (cs->vp) { 3338 VN_RELE(cs->vp); 3339 cs->vp = NULL; 3340 } 3341 3342 if (cs->cr) 3343 crfree(cs->cr); 3344 3345 cs->cr = crdup(cs->basecr); 3346 3347 vp = exi_public->exi_vp; 3348 if (vp == NULL) { 3349 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3350 goto out; 3351 } 3352 3353 if (is_system_labeled()) { 3354 bslabel_t *clabel; 3355 3356 ASSERT(req->rq_label != NULL); 3357 clabel = req->rq_label; 3358 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3359 "got client label from request(1)", 3360 struct svc_req *, req); 3361 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3362 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 3363 *cs->statusp = resp->status = 3364 NFS4ERR_SERVERFAULT; 3365 return; 3366 } 3367 } 3368 } 3369 3370 error = makefh4(&cs->fh, vp, exi_public); 3371 if (error != 0) { 3372 *cs->statusp = resp->status = puterrno4(error); 3373 goto out; 3374 } 3375 sav_exi = cs->exi; 3376 if (exi_public == exi_root) { 3377 /* 3378 * No filesystem is actually shared public, so we default 3379 * to exi_root. In this case, we must check whether root 3380 * is exported. 3381 */ 3382 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3383 3384 /* 3385 * if root filesystem is exported, the exportinfo struct that we 3386 * should use is what checkexport4 returns, because root_exi is 3387 * actually a mostly empty struct. 3388 */ 3389 exi = checkexport4(&fh_fmtp->fh4_fsid, 3390 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3391 cs->exi = ((exi != NULL) ? exi : exi_public); 3392 } else { 3393 /* 3394 * it's a properly shared filesystem 3395 */ 3396 cs->exi = exi_public; 3397 } 3398 3399 VN_HOLD(vp); 3400 cs->vp = vp; 3401 3402 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3403 VN_RELE(cs->vp); 3404 cs->vp = NULL; 3405 cs->exi = sav_exi; 3406 goto out; 3407 } 3408 3409 *cs->statusp = resp->status = NFS4_OK; 3410 out: 3411 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3412 PUTPUBFH4res *, resp); 3413 } 3414 3415 /* 3416 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3417 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3418 * or joe have restrictive search permissions, then we shouldn't let 3419 * the client get a file handle. This is easy to enforce. However, we 3420 * don't know what security flavor should be used until we resolve the 3421 * path name. Another complication is uid mapping. If root is 3422 * the user, then it will be mapped to the anonymous user by default, 3423 * but we won't know that till we've resolved the path name. And we won't 3424 * know what the anonymous user is. 3425 * Luckily, SECINFO is specified to take a full filename. 3426 * So what we will have to in rfs4_op_lookup is check that flavor of 3427 * the target object matches that of the request, and if root was the 3428 * caller, check for the root= and anon= options, and if necessary, 3429 * repeat the lookup using the right cred_t. But that's not done yet. 3430 */ 3431 /* ARGSUSED */ 3432 static void 3433 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3434 struct compound_state *cs) 3435 { 3436 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3437 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3438 nfs_fh4_fmt_t *fh_fmtp; 3439 3440 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3441 PUTFH4args *, args); 3442 3443 if (cs->vp) { 3444 VN_RELE(cs->vp); 3445 cs->vp = NULL; 3446 } 3447 3448 if (cs->cr) { 3449 crfree(cs->cr); 3450 cs->cr = NULL; 3451 } 3452 3453 3454 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3455 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3456 goto out; 3457 } 3458 3459 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3460 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3461 NULL); 3462 3463 if (cs->exi == NULL) { 3464 *cs->statusp = resp->status = NFS4ERR_STALE; 3465 goto out; 3466 } 3467 3468 cs->cr = crdup(cs->basecr); 3469 3470 ASSERT(cs->cr != NULL); 3471 3472 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3473 *cs->statusp = resp->status; 3474 goto out; 3475 } 3476 3477 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3478 VN_RELE(cs->vp); 3479 cs->vp = NULL; 3480 goto out; 3481 } 3482 3483 nfs_fh4_copy(&args->object, &cs->fh); 3484 *cs->statusp = resp->status = NFS4_OK; 3485 cs->deleg = FALSE; 3486 3487 out: 3488 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3489 PUTFH4res *, resp); 3490 } 3491 3492 /* ARGSUSED */ 3493 static void 3494 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3495 struct compound_state *cs) 3496 3497 { 3498 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3499 int error; 3500 fid_t fid; 3501 struct exportinfo *exi, *sav_exi; 3502 3503 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3504 3505 if (cs->vp) { 3506 VN_RELE(cs->vp); 3507 cs->vp = NULL; 3508 } 3509 3510 if (cs->cr) 3511 crfree(cs->cr); 3512 3513 cs->cr = crdup(cs->basecr); 3514 3515 /* 3516 * Using rootdir, the system root vnode, 3517 * get its fid. 3518 */ 3519 bzero(&fid, sizeof (fid)); 3520 fid.fid_len = MAXFIDSZ; 3521 error = vop_fid_pseudo(rootdir, &fid); 3522 if (error != 0) { 3523 *cs->statusp = resp->status = puterrno4(error); 3524 goto out; 3525 } 3526 3527 /* 3528 * Then use the root fsid & fid it to find out if it's exported 3529 * 3530 * If the server root isn't exported directly, then 3531 * it should at least be a pseudo export based on 3532 * one or more exports further down in the server's 3533 * file tree. 3534 */ 3535 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3536 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3537 NFS4_DEBUG(rfs4_debug, 3538 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3539 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3540 goto out; 3541 } 3542 3543 /* 3544 * Now make a filehandle based on the root 3545 * export and root vnode. 3546 */ 3547 error = makefh4(&cs->fh, rootdir, exi); 3548 if (error != 0) { 3549 *cs->statusp = resp->status = puterrno4(error); 3550 goto out; 3551 } 3552 3553 sav_exi = cs->exi; 3554 cs->exi = exi; 3555 3556 VN_HOLD(rootdir); 3557 cs->vp = rootdir; 3558 3559 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3560 VN_RELE(rootdir); 3561 cs->vp = NULL; 3562 cs->exi = sav_exi; 3563 goto out; 3564 } 3565 3566 *cs->statusp = resp->status = NFS4_OK; 3567 cs->deleg = FALSE; 3568 out: 3569 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3570 PUTROOTFH4res *, resp); 3571 } 3572 3573 /* 3574 * A directory entry is a valid nfsv4 entry if 3575 * - it has a non-zero ino 3576 * - it is not a dot or dotdot name 3577 * - it is visible in a pseudo export or in a real export that can 3578 * only have a limited view. 3579 */ 3580 static bool_t 3581 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3582 int *expseudo, int check_visible) 3583 { 3584 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3585 *expseudo = 0; 3586 return (FALSE); 3587 } 3588 3589 if (! check_visible) { 3590 *expseudo = 0; 3591 return (TRUE); 3592 } 3593 3594 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 3595 } 3596 3597 /* 3598 * set_rdattr_params sets up the variables used to manage what information 3599 * to get for each directory entry. 3600 */ 3601 static nfsstat4 3602 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3603 bitmap4 attrs, bool_t *need_to_lookup) 3604 { 3605 uint_t va_mask; 3606 nfsstat4 status; 3607 bitmap4 objbits; 3608 3609 status = bitmap4_to_attrmask(attrs, sargp); 3610 if (status != NFS4_OK) { 3611 /* 3612 * could not even figure attr mask 3613 */ 3614 return (status); 3615 } 3616 va_mask = sargp->vap->va_mask; 3617 3618 /* 3619 * dirent's d_ino is always correct value for mounted_on_fileid. 3620 * mntdfid_set is set once here, but mounted_on_fileid is 3621 * set in main dirent processing loop for each dirent. 3622 * The mntdfid_set is a simple optimization that lets the 3623 * server attr code avoid work when caller is readdir. 3624 */ 3625 sargp->mntdfid_set = TRUE; 3626 3627 /* 3628 * Lookup entry only if client asked for any of the following: 3629 * a) vattr attrs 3630 * b) vfs attrs 3631 * c) attrs w/per-object scope requested (change, filehandle, etc) 3632 * other than mounted_on_fileid (which we can take from dirent) 3633 */ 3634 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3635 3636 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3637 *need_to_lookup = TRUE; 3638 else 3639 *need_to_lookup = FALSE; 3640 3641 if (sargp->sbp == NULL) 3642 return (NFS4_OK); 3643 3644 /* 3645 * If filesystem attrs are requested, get them now from the 3646 * directory vp, as most entries will have same filesystem. The only 3647 * exception are mounted over entries but we handle 3648 * those as we go (XXX mounted over detection not yet implemented). 3649 */ 3650 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3651 status = bitmap4_get_sysattrs(sargp); 3652 sargp->vap->va_mask = va_mask; 3653 3654 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3655 /* 3656 * Failed to get filesystem attributes. 3657 * Return a rdattr_error for each entry, but don't fail. 3658 * However, don't get any obj-dependent attrs. 3659 */ 3660 sargp->rdattr_error = status; /* for rdattr_error */ 3661 *need_to_lookup = FALSE; 3662 /* 3663 * At least get fileid for regular readdir output 3664 */ 3665 sargp->vap->va_mask &= AT_NODEID; 3666 status = NFS4_OK; 3667 } 3668 3669 return (status); 3670 } 3671 3672 /* 3673 * readlink: args: CURRENT_FH. 3674 * res: status. If success - CURRENT_FH unchanged, return linktext. 3675 */ 3676 3677 /* ARGSUSED */ 3678 static void 3679 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3680 struct compound_state *cs) 3681 { 3682 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3683 int error; 3684 vnode_t *vp; 3685 struct iovec iov; 3686 struct vattr va; 3687 struct uio uio; 3688 char *data; 3689 struct sockaddr *ca; 3690 char *name = NULL; 3691 3692 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3693 3694 /* CURRENT_FH: directory */ 3695 vp = cs->vp; 3696 if (vp == NULL) { 3697 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3698 goto out; 3699 } 3700 3701 if (cs->access == CS_ACCESS_DENIED) { 3702 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3703 goto out; 3704 } 3705 3706 if (vp->v_type == VDIR) { 3707 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3708 goto out; 3709 } 3710 3711 if (vp->v_type != VLNK) { 3712 *cs->statusp = resp->status = NFS4ERR_INVAL; 3713 goto out; 3714 } 3715 3716 va.va_mask = AT_MODE; 3717 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3718 if (error) { 3719 *cs->statusp = resp->status = puterrno4(error); 3720 goto out; 3721 } 3722 3723 if (MANDLOCK(vp, va.va_mode)) { 3724 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3725 goto out; 3726 } 3727 3728 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3729 3730 iov.iov_base = data; 3731 iov.iov_len = MAXPATHLEN; 3732 uio.uio_iov = &iov; 3733 uio.uio_iovcnt = 1; 3734 uio.uio_segflg = UIO_SYSSPACE; 3735 uio.uio_extflg = UIO_COPY_CACHED; 3736 uio.uio_loffset = 0; 3737 uio.uio_resid = MAXPATHLEN; 3738 3739 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3740 3741 if (error) { 3742 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3743 *cs->statusp = resp->status = puterrno4(error); 3744 goto out; 3745 } 3746 3747 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3748 3749 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3750 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3751 MAXPATHLEN + 1); 3752 3753 if (name == NULL) { 3754 /* 3755 * Even though the conversion failed, we return 3756 * something. We just don't translate it. 3757 */ 3758 name = data; 3759 } 3760 3761 /* 3762 * treat link name as data 3763 */ 3764 (void) str_to_utf8(name, &resp->link); 3765 3766 if (name != data) 3767 kmem_free(name, MAXPATHLEN + 1); 3768 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3769 *cs->statusp = resp->status = NFS4_OK; 3770 3771 out: 3772 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3773 READLINK4res *, resp); 3774 } 3775 3776 static void 3777 rfs4_op_readlink_free(nfs_resop4 *resop) 3778 { 3779 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3780 utf8string *symlink = &resp->link; 3781 3782 if (symlink->utf8string_val) { 3783 UTF8STRING_FREE(*symlink) 3784 } 3785 } 3786 3787 /* 3788 * release_lockowner: 3789 * Release any state associated with the supplied 3790 * lockowner. Note if any lo_state is holding locks we will not 3791 * rele that lo_state and thus the lockowner will not be destroyed. 3792 * A client using lock after the lock owner stateid has been released 3793 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3794 * to reissue the lock with new_lock_owner set to TRUE. 3795 * args: lock_owner 3796 * res: status 3797 */ 3798 /* ARGSUSED */ 3799 static void 3800 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3801 struct svc_req *req, struct compound_state *cs) 3802 { 3803 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3804 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3805 rfs4_lockowner_t *lo; 3806 rfs4_openowner_t *oop; 3807 rfs4_state_t *sp; 3808 rfs4_lo_state_t *lsp; 3809 rfs4_client_t *cp; 3810 bool_t create = FALSE; 3811 locklist_t *llist; 3812 sysid_t sysid; 3813 3814 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3815 cs, RELEASE_LOCKOWNER4args *, ap); 3816 3817 /* Make sure there is a clientid around for this request */ 3818 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3819 3820 if (cp == NULL) { 3821 *cs->statusp = resp->status = 3822 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3823 goto out; 3824 } 3825 rfs4_client_rele(cp); 3826 3827 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3828 if (lo == NULL) { 3829 *cs->statusp = resp->status = NFS4_OK; 3830 goto out; 3831 } 3832 ASSERT(lo->client != NULL); 3833 3834 /* 3835 * Check for EXPIRED client. If so will reap state with in a lease 3836 * period or on next set_clientid_confirm step 3837 */ 3838 if (rfs4_lease_expired(lo->client)) { 3839 rfs4_lockowner_rele(lo); 3840 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3841 goto out; 3842 } 3843 3844 /* 3845 * If no sysid has been assigned, then no locks exist; just return. 3846 */ 3847 rfs4_dbe_lock(lo->client->dbe); 3848 if (lo->client->sysidt == LM_NOSYSID) { 3849 rfs4_lockowner_rele(lo); 3850 rfs4_dbe_unlock(lo->client->dbe); 3851 goto out; 3852 } 3853 3854 sysid = lo->client->sysidt; 3855 rfs4_dbe_unlock(lo->client->dbe); 3856 3857 /* 3858 * Mark the lockowner invalid. 3859 */ 3860 rfs4_dbe_hide(lo->dbe); 3861 3862 /* 3863 * sysid-pid pair should now not be used since the lockowner is 3864 * invalid. If the client were to instantiate the lockowner again 3865 * it would be assigned a new pid. Thus we can get the list of 3866 * current locks. 3867 */ 3868 3869 llist = flk_get_active_locks(sysid, lo->pid); 3870 /* If we are still holding locks fail */ 3871 if (llist != NULL) { 3872 3873 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3874 3875 flk_free_locklist(llist); 3876 /* 3877 * We need to unhide the lockowner so the client can 3878 * try it again. The bad thing here is if the client 3879 * has a logic error that took it here in the first place 3880 * he probably has lost accounting of the locks that it 3881 * is holding. So we may have dangling state until the 3882 * open owner state is reaped via close. One scenario 3883 * that could possibly occur is that the client has 3884 * sent the unlock request(s) in separate threads 3885 * and has not waited for the replies before sending the 3886 * RELEASE_LOCKOWNER request. Presumably, it would expect 3887 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3888 * reissuing the request. 3889 */ 3890 rfs4_dbe_unhide(lo->dbe); 3891 rfs4_lockowner_rele(lo); 3892 goto out; 3893 } 3894 3895 /* 3896 * For the corresponding client we need to check each open 3897 * owner for any opens that have lockowner state associated 3898 * with this lockowner. 3899 */ 3900 3901 rfs4_dbe_lock(lo->client->dbe); 3902 for (oop = lo->client->openownerlist.next->oop; oop != NULL; 3903 oop = oop->openownerlist.next->oop) { 3904 3905 rfs4_dbe_lock(oop->dbe); 3906 for (sp = oop->ownerstateids.next->sp; sp != NULL; 3907 sp = sp->ownerstateids.next->sp) { 3908 3909 rfs4_dbe_lock(sp->dbe); 3910 for (lsp = sp->lockownerlist.next->lsp; 3911 lsp != NULL; lsp = lsp->lockownerlist.next->lsp) { 3912 if (lsp->locker == lo) { 3913 rfs4_dbe_lock(lsp->dbe); 3914 rfs4_dbe_invalidate(lsp->dbe); 3915 rfs4_dbe_unlock(lsp->dbe); 3916 } 3917 } 3918 rfs4_dbe_unlock(sp->dbe); 3919 } 3920 rfs4_dbe_unlock(oop->dbe); 3921 } 3922 rfs4_dbe_unlock(lo->client->dbe); 3923 3924 rfs4_lockowner_rele(lo); 3925 3926 *cs->statusp = resp->status = NFS4_OK; 3927 3928 out: 3929 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 3930 cs, RELEASE_LOCKOWNER4res *, resp); 3931 } 3932 3933 /* 3934 * short utility function to lookup a file and recall the delegation 3935 */ 3936 static rfs4_file_t * 3937 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 3938 int *lkup_error, cred_t *cr) 3939 { 3940 vnode_t *vp; 3941 rfs4_file_t *fp = NULL; 3942 bool_t fcreate = FALSE; 3943 int error; 3944 3945 if (vpp) 3946 *vpp = NULL; 3947 3948 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 3949 NULL)) == 0) { 3950 if (vp->v_type == VREG) 3951 fp = rfs4_findfile(vp, NULL, &fcreate); 3952 if (vpp) 3953 *vpp = vp; 3954 else 3955 VN_RELE(vp); 3956 } 3957 3958 if (lkup_error) 3959 *lkup_error = error; 3960 3961 return (fp); 3962 } 3963 3964 /* 3965 * remove: args: CURRENT_FH: directory; name. 3966 * res: status. If success - CURRENT_FH unchanged, return change_info 3967 * for directory. 3968 */ 3969 /* ARGSUSED */ 3970 static void 3971 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3972 struct compound_state *cs) 3973 { 3974 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 3975 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 3976 int error; 3977 vnode_t *dvp, *vp; 3978 struct vattr bdva, idva, adva; 3979 char *nm; 3980 uint_t len; 3981 rfs4_file_t *fp; 3982 int in_crit = 0; 3983 bslabel_t *clabel; 3984 struct sockaddr *ca; 3985 char *name = NULL; 3986 3987 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 3988 REMOVE4args *, args); 3989 3990 /* CURRENT_FH: directory */ 3991 dvp = cs->vp; 3992 if (dvp == NULL) { 3993 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3994 goto out; 3995 } 3996 3997 if (cs->access == CS_ACCESS_DENIED) { 3998 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3999 goto out; 4000 } 4001 4002 /* 4003 * If there is an unshared filesystem mounted on this vnode, 4004 * Do not allow to remove anything in this directory. 4005 */ 4006 if (vn_ismntpt(dvp)) { 4007 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4008 goto out; 4009 } 4010 4011 if (dvp->v_type != VDIR) { 4012 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4013 goto out; 4014 } 4015 4016 if (!utf8_dir_verify(&args->target)) { 4017 *cs->statusp = resp->status = NFS4ERR_INVAL; 4018 goto out; 4019 } 4020 4021 /* 4022 * Lookup the file so that we can check if it's a directory 4023 */ 4024 nm = utf8_to_fn(&args->target, &len, NULL); 4025 if (nm == NULL) { 4026 *cs->statusp = resp->status = NFS4ERR_INVAL; 4027 goto out; 4028 } 4029 4030 if (len > MAXNAMELEN) { 4031 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4032 kmem_free(nm, len); 4033 goto out; 4034 } 4035 4036 if (rdonly4(cs->exi, cs->vp, req)) { 4037 *cs->statusp = resp->status = NFS4ERR_ROFS; 4038 kmem_free(nm, len); 4039 goto out; 4040 } 4041 4042 /* If necessary, convert to UTF-8 for illbehaved clients */ 4043 4044 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4045 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4046 MAXPATHLEN + 1); 4047 4048 if (name == NULL) { 4049 *cs->statusp = resp->status = NFS4ERR_INVAL; 4050 kmem_free(nm, len); 4051 goto out; 4052 } 4053 4054 /* 4055 * Lookup the file to determine type and while we are see if 4056 * there is a file struct around and check for delegation. 4057 * We don't need to acquire va_seq before this lookup, if 4058 * it causes an update, cinfo.before will not match, which will 4059 * trigger a cache flush even if atomic is TRUE. 4060 */ 4061 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4062 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4063 NULL)) { 4064 VN_RELE(vp); 4065 rfs4_file_rele(fp); 4066 *cs->statusp = resp->status = NFS4ERR_DELAY; 4067 if (nm != name) 4068 kmem_free(name, MAXPATHLEN + 1); 4069 kmem_free(nm, len); 4070 goto out; 4071 } 4072 } 4073 4074 /* Didn't find anything to remove */ 4075 if (vp == NULL) { 4076 *cs->statusp = resp->status = error; 4077 if (nm != name) 4078 kmem_free(name, MAXPATHLEN + 1); 4079 kmem_free(nm, len); 4080 goto out; 4081 } 4082 4083 if (nbl_need_check(vp)) { 4084 nbl_start_crit(vp, RW_READER); 4085 in_crit = 1; 4086 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4087 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4088 if (nm != name) 4089 kmem_free(name, MAXPATHLEN + 1); 4090 kmem_free(nm, len); 4091 nbl_end_crit(vp); 4092 VN_RELE(vp); 4093 if (fp) { 4094 rfs4_clear_dont_grant(fp); 4095 rfs4_file_rele(fp); 4096 } 4097 goto out; 4098 } 4099 } 4100 4101 /* check label before allowing removal */ 4102 if (is_system_labeled()) { 4103 ASSERT(req->rq_label != NULL); 4104 clabel = req->rq_label; 4105 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4106 "got client label from request(1)", 4107 struct svc_req *, req); 4108 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4109 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK)) { 4110 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4111 if (name != nm) 4112 kmem_free(name, MAXPATHLEN + 1); 4113 kmem_free(nm, len); 4114 if (in_crit) 4115 nbl_end_crit(vp); 4116 VN_RELE(vp); 4117 if (fp) { 4118 rfs4_clear_dont_grant(fp); 4119 rfs4_file_rele(fp); 4120 } 4121 goto out; 4122 } 4123 } 4124 } 4125 4126 /* Get dir "before" change value */ 4127 bdva.va_mask = AT_CTIME|AT_SEQ; 4128 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4129 if (error) { 4130 *cs->statusp = resp->status = puterrno4(error); 4131 if (nm != name) 4132 kmem_free(name, MAXPATHLEN + 1); 4133 kmem_free(nm, len); 4134 goto out; 4135 } 4136 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4137 4138 /* Actually do the REMOVE operation */ 4139 if (vp->v_type == VDIR) { 4140 /* 4141 * Can't remove a directory that has a mounted-on filesystem. 4142 */ 4143 if (vn_ismntpt(vp)) { 4144 error = EACCES; 4145 } else { 4146 /* 4147 * System V defines rmdir to return EEXIST, 4148 * not * ENOTEMPTY, if the directory is not 4149 * empty. A System V NFS server needs to map 4150 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4151 * transmit over the wire. 4152 */ 4153 if ((error = VOP_RMDIR(dvp, nm, rootdir, cs->cr, 4154 NULL, 0)) == EEXIST) 4155 error = ENOTEMPTY; 4156 } 4157 } else { 4158 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4159 fp != NULL) { 4160 struct vattr va; 4161 vnode_t *tvp; 4162 4163 rfs4_dbe_lock(fp->dbe); 4164 tvp = fp->vp; 4165 if (tvp) 4166 VN_HOLD(tvp); 4167 rfs4_dbe_unlock(fp->dbe); 4168 4169 if (tvp) { 4170 /* 4171 * This is va_seq safe because we are not 4172 * manipulating dvp. 4173 */ 4174 va.va_mask = AT_NLINK; 4175 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4176 va.va_nlink == 0) { 4177 /* Remove state on file remove */ 4178 if (in_crit) { 4179 nbl_end_crit(vp); 4180 in_crit = 0; 4181 } 4182 rfs4_close_all_state(fp); 4183 } 4184 VN_RELE(tvp); 4185 } 4186 } 4187 } 4188 4189 if (in_crit) 4190 nbl_end_crit(vp); 4191 VN_RELE(vp); 4192 4193 if (fp) { 4194 rfs4_clear_dont_grant(fp); 4195 rfs4_file_rele(fp); 4196 } 4197 if (nm != name) 4198 kmem_free(name, MAXPATHLEN + 1); 4199 kmem_free(nm, len); 4200 4201 if (error) { 4202 *cs->statusp = resp->status = puterrno4(error); 4203 goto out; 4204 } 4205 4206 /* 4207 * Get the initial "after" sequence number, if it fails, set to zero 4208 */ 4209 idva.va_mask = AT_SEQ; 4210 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4211 idva.va_seq = 0; 4212 4213 /* 4214 * Force modified data and metadata out to stable storage. 4215 */ 4216 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4217 4218 /* 4219 * Get "after" change value, if it fails, simply return the 4220 * before value. 4221 */ 4222 adva.va_mask = AT_CTIME|AT_SEQ; 4223 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4224 adva.va_ctime = bdva.va_ctime; 4225 adva.va_seq = 0; 4226 } 4227 4228 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4229 4230 /* 4231 * The cinfo.atomic = TRUE only if we have 4232 * non-zero va_seq's, and it has incremented by exactly one 4233 * during the VOP_REMOVE/RMDIR and it didn't change during 4234 * the VOP_FSYNC. 4235 */ 4236 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4237 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4238 resp->cinfo.atomic = TRUE; 4239 else 4240 resp->cinfo.atomic = FALSE; 4241 4242 *cs->statusp = resp->status = NFS4_OK; 4243 4244 out: 4245 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4246 REMOVE4res *, resp); 4247 } 4248 4249 /* 4250 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4251 * oldname and newname. 4252 * res: status. If success - CURRENT_FH unchanged, return change_info 4253 * for both from and target directories. 4254 */ 4255 /* ARGSUSED */ 4256 static void 4257 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4258 struct compound_state *cs) 4259 { 4260 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4261 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4262 int error; 4263 vnode_t *odvp; 4264 vnode_t *ndvp; 4265 vnode_t *srcvp, *targvp; 4266 struct vattr obdva, oidva, oadva; 4267 struct vattr nbdva, nidva, nadva; 4268 char *onm, *nnm; 4269 uint_t olen, nlen; 4270 rfs4_file_t *fp, *sfp; 4271 int in_crit_src, in_crit_targ; 4272 int fp_rele_grant_hold, sfp_rele_grant_hold; 4273 bslabel_t *clabel; 4274 struct sockaddr *ca; 4275 char *converted_onm = NULL; 4276 char *converted_nnm = NULL; 4277 4278 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4279 RENAME4args *, args); 4280 4281 fp = sfp = NULL; 4282 srcvp = targvp = NULL; 4283 in_crit_src = in_crit_targ = 0; 4284 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4285 4286 /* CURRENT_FH: target directory */ 4287 ndvp = cs->vp; 4288 if (ndvp == NULL) { 4289 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4290 goto out; 4291 } 4292 4293 /* SAVED_FH: from directory */ 4294 odvp = cs->saved_vp; 4295 if (odvp == NULL) { 4296 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4297 goto out; 4298 } 4299 4300 if (cs->access == CS_ACCESS_DENIED) { 4301 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4302 goto out; 4303 } 4304 4305 /* 4306 * If there is an unshared filesystem mounted on this vnode, 4307 * do not allow to rename objects in this directory. 4308 */ 4309 if (vn_ismntpt(odvp)) { 4310 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4311 goto out; 4312 } 4313 4314 /* 4315 * If there is an unshared filesystem mounted on this vnode, 4316 * do not allow to rename to this directory. 4317 */ 4318 if (vn_ismntpt(ndvp)) { 4319 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4320 goto out; 4321 } 4322 4323 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4324 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4325 goto out; 4326 } 4327 4328 if (cs->saved_exi != cs->exi) { 4329 *cs->statusp = resp->status = NFS4ERR_XDEV; 4330 goto out; 4331 } 4332 4333 if (!utf8_dir_verify(&args->oldname)) { 4334 *cs->statusp = resp->status = NFS4ERR_INVAL; 4335 goto out; 4336 } 4337 4338 if (!utf8_dir_verify(&args->newname)) { 4339 *cs->statusp = resp->status = NFS4ERR_INVAL; 4340 goto out; 4341 } 4342 4343 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4344 if (onm == NULL) { 4345 *cs->statusp = resp->status = NFS4ERR_INVAL; 4346 goto out; 4347 } 4348 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4349 nlen = MAXPATHLEN + 1; 4350 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4351 nlen); 4352 4353 if (converted_onm == NULL) { 4354 *cs->statusp = resp->status = NFS4ERR_INVAL; 4355 kmem_free(onm, olen); 4356 goto out; 4357 } 4358 4359 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4360 if (nnm == NULL) { 4361 *cs->statusp = resp->status = NFS4ERR_INVAL; 4362 if (onm != converted_onm) 4363 kmem_free(converted_onm, MAXPATHLEN + 1); 4364 kmem_free(onm, olen); 4365 goto out; 4366 } 4367 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4368 MAXPATHLEN + 1); 4369 4370 if (converted_nnm == NULL) { 4371 *cs->statusp = resp->status = NFS4ERR_INVAL; 4372 kmem_free(nnm, nlen); 4373 nnm = NULL; 4374 if (onm != converted_onm) 4375 kmem_free(converted_onm, MAXPATHLEN + 1); 4376 kmem_free(onm, olen); 4377 goto out; 4378 } 4379 4380 4381 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4382 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4383 kmem_free(onm, olen); 4384 kmem_free(nnm, nlen); 4385 goto out; 4386 } 4387 4388 4389 if (rdonly4(cs->exi, cs->vp, req)) { 4390 *cs->statusp = resp->status = NFS4ERR_ROFS; 4391 if (onm != converted_onm) 4392 kmem_free(converted_onm, MAXPATHLEN + 1); 4393 kmem_free(onm, olen); 4394 if (nnm != converted_nnm) 4395 kmem_free(converted_nnm, MAXPATHLEN + 1); 4396 kmem_free(nnm, nlen); 4397 goto out; 4398 } 4399 4400 /* check label of the target dir */ 4401 if (is_system_labeled()) { 4402 ASSERT(req->rq_label != NULL); 4403 clabel = req->rq_label; 4404 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4405 "got client label from request(1)", 4406 struct svc_req *, req); 4407 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4408 if (!do_rfs_label_check(clabel, ndvp, 4409 EQUALITY_CHECK)) { 4410 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4411 goto err_out; 4412 } 4413 } 4414 } 4415 4416 /* 4417 * Is the source a file and have a delegation? 4418 * We don't need to acquire va_seq before these lookups, if 4419 * it causes an update, cinfo.before will not match, which will 4420 * trigger a cache flush even if atomic is TRUE. 4421 */ 4422 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4423 &error, cs->cr)) { 4424 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4425 NULL)) { 4426 *cs->statusp = resp->status = NFS4ERR_DELAY; 4427 goto err_out; 4428 } 4429 } 4430 4431 if (srcvp == NULL) { 4432 *cs->statusp = resp->status = puterrno4(error); 4433 if (onm != converted_onm) 4434 kmem_free(converted_onm, MAXPATHLEN + 1); 4435 kmem_free(onm, olen); 4436 if (nnm != converted_nnm) 4437 kmem_free(converted_onm, MAXPATHLEN + 1); 4438 kmem_free(nnm, nlen); 4439 goto out; 4440 } 4441 4442 sfp_rele_grant_hold = 1; 4443 4444 /* Does the destination exist and a file and have a delegation? */ 4445 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4446 NULL, cs->cr)) { 4447 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4448 NULL)) { 4449 *cs->statusp = resp->status = NFS4ERR_DELAY; 4450 goto err_out; 4451 } 4452 } 4453 fp_rele_grant_hold = 1; 4454 4455 4456 /* Check for NBMAND lock on both source and target */ 4457 if (nbl_need_check(srcvp)) { 4458 nbl_start_crit(srcvp, RW_READER); 4459 in_crit_src = 1; 4460 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4461 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4462 goto err_out; 4463 } 4464 } 4465 4466 if (targvp && nbl_need_check(targvp)) { 4467 nbl_start_crit(targvp, RW_READER); 4468 in_crit_targ = 1; 4469 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4470 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4471 goto err_out; 4472 } 4473 } 4474 4475 /* Get source "before" change value */ 4476 obdva.va_mask = AT_CTIME|AT_SEQ; 4477 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4478 if (!error) { 4479 nbdva.va_mask = AT_CTIME|AT_SEQ; 4480 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4481 } 4482 if (error) { 4483 *cs->statusp = resp->status = puterrno4(error); 4484 goto err_out; 4485 } 4486 4487 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4488 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4489 4490 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4491 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4492 struct vattr va; 4493 vnode_t *tvp; 4494 4495 rfs4_dbe_lock(fp->dbe); 4496 tvp = fp->vp; 4497 if (tvp) 4498 VN_HOLD(tvp); 4499 rfs4_dbe_unlock(fp->dbe); 4500 4501 if (tvp) { 4502 va.va_mask = AT_NLINK; 4503 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4504 va.va_nlink == 0) { 4505 /* The file is gone and so should the state */ 4506 if (in_crit_targ) { 4507 nbl_end_crit(targvp); 4508 in_crit_targ = 0; 4509 } 4510 rfs4_close_all_state(fp); 4511 } 4512 VN_RELE(tvp); 4513 } 4514 } 4515 if (error == 0) 4516 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4517 4518 if (in_crit_src) 4519 nbl_end_crit(srcvp); 4520 if (srcvp) 4521 VN_RELE(srcvp); 4522 if (in_crit_targ) 4523 nbl_end_crit(targvp); 4524 if (targvp) 4525 VN_RELE(targvp); 4526 4527 if (sfp) { 4528 rfs4_clear_dont_grant(sfp); 4529 rfs4_file_rele(sfp); 4530 } 4531 if (fp) { 4532 rfs4_clear_dont_grant(fp); 4533 rfs4_file_rele(fp); 4534 } 4535 4536 if (converted_onm != onm) 4537 kmem_free(converted_onm, MAXPATHLEN + 1); 4538 kmem_free(onm, olen); 4539 if (converted_nnm != nnm) 4540 kmem_free(converted_nnm, MAXPATHLEN + 1); 4541 kmem_free(nnm, nlen); 4542 4543 /* 4544 * Get the initial "after" sequence number, if it fails, set to zero 4545 */ 4546 oidva.va_mask = AT_SEQ; 4547 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4548 oidva.va_seq = 0; 4549 4550 nidva.va_mask = AT_SEQ; 4551 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4552 nidva.va_seq = 0; 4553 4554 /* 4555 * Force modified data and metadata out to stable storage. 4556 */ 4557 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4558 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4559 4560 if (error) { 4561 *cs->statusp = resp->status = puterrno4(error); 4562 goto out; 4563 } 4564 4565 /* 4566 * Get "after" change values, if it fails, simply return the 4567 * before value. 4568 */ 4569 oadva.va_mask = AT_CTIME|AT_SEQ; 4570 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4571 oadva.va_ctime = obdva.va_ctime; 4572 oadva.va_seq = 0; 4573 } 4574 4575 nadva.va_mask = AT_CTIME|AT_SEQ; 4576 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4577 nadva.va_ctime = nbdva.va_ctime; 4578 nadva.va_seq = 0; 4579 } 4580 4581 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4582 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4583 4584 /* 4585 * The cinfo.atomic = TRUE only if we have 4586 * non-zero va_seq's, and it has incremented by exactly one 4587 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4588 */ 4589 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4590 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4591 resp->source_cinfo.atomic = TRUE; 4592 else 4593 resp->source_cinfo.atomic = FALSE; 4594 4595 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4596 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4597 resp->target_cinfo.atomic = TRUE; 4598 else 4599 resp->target_cinfo.atomic = FALSE; 4600 4601 #ifdef VOLATILE_FH_TEST 4602 { 4603 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4604 4605 /* 4606 * Add the renamed file handle to the volatile rename list 4607 */ 4608 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4609 /* file handles may expire on rename */ 4610 vnode_t *vp; 4611 4612 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4613 /* 4614 * Already know that nnm will be a valid string 4615 */ 4616 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4617 NULL, NULL, NULL); 4618 kmem_free(nnm, nlen); 4619 if (!error) { 4620 add_volrnm_fh(cs->exi, vp); 4621 VN_RELE(vp); 4622 } 4623 } 4624 } 4625 #endif /* VOLATILE_FH_TEST */ 4626 4627 *cs->statusp = resp->status = NFS4_OK; 4628 out: 4629 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4630 RENAME4res *, resp); 4631 return; 4632 4633 err_out: 4634 if (onm != converted_onm) 4635 kmem_free(converted_onm, MAXPATHLEN + 1); 4636 if (onm != NULL) 4637 kmem_free(onm, olen); 4638 if (nnm != converted_nnm) 4639 kmem_free(converted_nnm, MAXPATHLEN + 1); 4640 if (nnm != NULL) 4641 kmem_free(nnm, nlen); 4642 4643 if (in_crit_src) nbl_end_crit(srcvp); 4644 if (in_crit_targ) nbl_end_crit(targvp); 4645 if (targvp) VN_RELE(targvp); 4646 if (srcvp) VN_RELE(srcvp); 4647 if (sfp) { 4648 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4649 rfs4_file_rele(sfp); 4650 } 4651 if (fp) { 4652 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4653 rfs4_file_rele(fp); 4654 } 4655 4656 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4657 RENAME4res *, resp); 4658 } 4659 4660 /* ARGSUSED */ 4661 static void 4662 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4663 struct compound_state *cs) 4664 { 4665 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4666 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4667 rfs4_client_t *cp; 4668 4669 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4670 RENEW4args *, args); 4671 4672 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4673 *cs->statusp = resp->status = 4674 rfs4_check_clientid(&args->clientid, 0); 4675 goto out; 4676 } 4677 4678 if (rfs4_lease_expired(cp)) { 4679 rfs4_client_rele(cp); 4680 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4681 goto out; 4682 } 4683 4684 rfs4_update_lease(cp); 4685 4686 mutex_enter(cp->cbinfo.cb_lock); 4687 if (cp->cbinfo.cb_notified_of_cb_path_down == FALSE) { 4688 cp->cbinfo.cb_notified_of_cb_path_down = TRUE; 4689 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4690 } else { 4691 *cs->statusp = resp->status = NFS4_OK; 4692 } 4693 mutex_exit(cp->cbinfo.cb_lock); 4694 4695 rfs4_client_rele(cp); 4696 4697 out: 4698 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4699 RENEW4res *, resp); 4700 } 4701 4702 /* ARGSUSED */ 4703 static void 4704 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4705 struct compound_state *cs) 4706 { 4707 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4708 4709 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4710 4711 /* No need to check cs->access - we are not accessing any object */ 4712 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4713 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4714 goto out; 4715 } 4716 if (cs->vp != NULL) { 4717 VN_RELE(cs->vp); 4718 } 4719 cs->vp = cs->saved_vp; 4720 cs->saved_vp = NULL; 4721 cs->exi = cs->saved_exi; 4722 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4723 *cs->statusp = resp->status = NFS4_OK; 4724 cs->deleg = FALSE; 4725 4726 out: 4727 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4728 RESTOREFH4res *, resp); 4729 } 4730 4731 /* ARGSUSED */ 4732 static void 4733 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4734 struct compound_state *cs) 4735 { 4736 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4737 4738 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4739 4740 /* No need to check cs->access - we are not accessing any object */ 4741 if (cs->vp == NULL) { 4742 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4743 goto out; 4744 } 4745 if (cs->saved_vp != NULL) { 4746 VN_RELE(cs->saved_vp); 4747 } 4748 cs->saved_vp = cs->vp; 4749 VN_HOLD(cs->saved_vp); 4750 cs->saved_exi = cs->exi; 4751 /* 4752 * since SAVEFH is fairly rare, don't alloc space for its fh 4753 * unless necessary. 4754 */ 4755 if (cs->saved_fh.nfs_fh4_val == NULL) { 4756 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4757 } 4758 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4759 *cs->statusp = resp->status = NFS4_OK; 4760 4761 out: 4762 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4763 SAVEFH4res *, resp); 4764 } 4765 4766 /* 4767 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4768 * return the bitmap of attrs that were set successfully. It is also 4769 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4770 * always be called only after rfs4_do_set_attrs(). 4771 * 4772 * Verify that the attributes are same as the expected ones. sargp->vap 4773 * and sargp->sbp contain the input attributes as translated from fattr4. 4774 * 4775 * This function verifies only the attrs that correspond to a vattr or 4776 * vfsstat struct. That is because of the extra step needed to get the 4777 * corresponding system structs. Other attributes have already been set or 4778 * verified by do_rfs4_set_attrs. 4779 * 4780 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4781 */ 4782 static int 4783 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4784 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4785 { 4786 int error, ret_error = 0; 4787 int i, k; 4788 uint_t sva_mask = sargp->vap->va_mask; 4789 uint_t vbit; 4790 union nfs4_attr_u *na; 4791 uint8_t *amap; 4792 bool_t getsb = ntovp->vfsstat; 4793 4794 if (sva_mask != 0) { 4795 /* 4796 * Okay to overwrite sargp->vap because we verify based 4797 * on the incoming values. 4798 */ 4799 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4800 sargp->cs->cr, NULL); 4801 if (ret_error) { 4802 if (resp == NULL) 4803 return (ret_error); 4804 /* 4805 * Must return bitmap of successful attrs 4806 */ 4807 sva_mask = 0; /* to prevent checking vap later */ 4808 } else { 4809 /* 4810 * Some file systems clobber va_mask. it is probably 4811 * wrong of them to do so, nonethless we practice 4812 * defensive coding. 4813 * See bug id 4276830. 4814 */ 4815 sargp->vap->va_mask = sva_mask; 4816 } 4817 } 4818 4819 if (getsb) { 4820 /* 4821 * Now get the superblock and loop on the bitmap, as there is 4822 * no simple way of translating from superblock to bitmap4. 4823 */ 4824 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4825 if (ret_error) { 4826 if (resp == NULL) 4827 goto errout; 4828 getsb = FALSE; 4829 } 4830 } 4831 4832 /* 4833 * Now loop and verify each attribute which getattr returned 4834 * whether it's the same as the input. 4835 */ 4836 if (resp == NULL && !getsb && (sva_mask == 0)) 4837 goto errout; 4838 4839 na = ntovp->na; 4840 amap = ntovp->amap; 4841 k = 0; 4842 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4843 k = *amap; 4844 ASSERT(nfs4_ntov_map[k].nval == k); 4845 vbit = nfs4_ntov_map[k].vbit; 4846 4847 /* 4848 * If vattr attribute but VOP_GETATTR failed, or it's 4849 * superblock attribute but VFS_STATVFS failed, skip 4850 */ 4851 if (vbit) { 4852 if ((vbit & sva_mask) == 0) 4853 continue; 4854 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4855 continue; 4856 } 4857 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4858 if (resp != NULL) { 4859 if (error) 4860 ret_error = -1; /* not all match */ 4861 else /* update response bitmap */ 4862 *resp |= nfs4_ntov_map[k].fbit; 4863 continue; 4864 } 4865 if (error) { 4866 ret_error = -1; /* not all match */ 4867 break; 4868 } 4869 } 4870 errout: 4871 return (ret_error); 4872 } 4873 4874 /* 4875 * Decode the attribute to be set/verified. If the attr requires a sys op 4876 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4877 * call the sv_getit function for it, because the sys op hasn't yet been done. 4878 * Return 0 for success, error code if failed. 4879 * 4880 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 4881 */ 4882 static int 4883 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 4884 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 4885 { 4886 int error = 0; 4887 bool_t set_later; 4888 4889 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 4890 4891 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 4892 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 4893 /* 4894 * don't verify yet if a vattr or sb dependent attr, 4895 * because we don't have their sys values yet. 4896 * Will be done later. 4897 */ 4898 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 4899 /* 4900 * ACLs are a special case, since setting the MODE 4901 * conflicts with setting the ACL. We delay setting 4902 * the ACL until all other attributes have been set. 4903 * The ACL gets set in do_rfs4_op_setattr(). 4904 */ 4905 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 4906 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 4907 sargp, nap); 4908 if (error) { 4909 xdr_free(nfs4_ntov_map[k].xfunc, 4910 (caddr_t)nap); 4911 } 4912 } 4913 } 4914 } else { 4915 #ifdef DEBUG 4916 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 4917 "decoding attribute %d\n", k); 4918 #endif 4919 error = EINVAL; 4920 } 4921 if (!error && resp_bval && !set_later) { 4922 *resp_bval |= nfs4_ntov_map[k].fbit; 4923 } 4924 4925 return (error); 4926 } 4927 4928 /* 4929 * Set vattr based on incoming fattr4 attrs - used by setattr. 4930 * Set response mask. Ignore any values that are not writable vattr attrs. 4931 */ 4932 static nfsstat4 4933 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4934 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 4935 nfs4_attr_cmd_t cmd) 4936 { 4937 int error = 0; 4938 int i; 4939 char *attrs = fattrp->attrlist4; 4940 uint32_t attrslen = fattrp->attrlist4_len; 4941 XDR xdr; 4942 nfsstat4 status = NFS4_OK; 4943 vnode_t *vp = cs->vp; 4944 union nfs4_attr_u *na; 4945 uint8_t *amap; 4946 4947 #ifndef lint 4948 /* 4949 * Make sure that maximum attribute number can be expressed as an 4950 * 8 bit quantity. 4951 */ 4952 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 4953 #endif 4954 4955 if (vp == NULL) { 4956 if (resp) 4957 *resp = 0; 4958 return (NFS4ERR_NOFILEHANDLE); 4959 } 4960 if (cs->access == CS_ACCESS_DENIED) { 4961 if (resp) 4962 *resp = 0; 4963 return (NFS4ERR_ACCESS); 4964 } 4965 4966 sargp->op = cmd; 4967 sargp->cs = cs; 4968 sargp->flag = 0; /* may be set later */ 4969 sargp->vap->va_mask = 0; 4970 sargp->rdattr_error = NFS4_OK; 4971 sargp->rdattr_error_req = FALSE; 4972 /* sargp->sbp is set by the caller */ 4973 4974 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 4975 4976 na = ntovp->na; 4977 amap = ntovp->amap; 4978 4979 /* 4980 * The following loop iterates on the nfs4_ntov_map checking 4981 * if the fbit is set in the requested bitmap. 4982 * If set then we process the arguments using the 4983 * rfs4_fattr4 conversion functions to populate the setattr 4984 * vattr and va_mask. Any settable attrs that are not using vattr 4985 * will be set in this loop. 4986 */ 4987 for (i = 0; i < nfs4_ntov_map_size; i++) { 4988 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 4989 continue; 4990 } 4991 /* 4992 * If setattr, must be a writable attr. 4993 * If verify/nverify, must be a readable attr. 4994 */ 4995 if ((error = (*nfs4_ntov_map[i].sv_getit)( 4996 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 4997 /* 4998 * Client tries to set/verify an 4999 * unsupported attribute, tries to set 5000 * a read only attr or verify a write 5001 * only one - error! 5002 */ 5003 break; 5004 } 5005 /* 5006 * Decode the attribute to set/verify 5007 */ 5008 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5009 &xdr, resp ? resp : NULL, na); 5010 if (error) 5011 break; 5012 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5013 na++; 5014 (ntovp->attrcnt)++; 5015 if (nfs4_ntov_map[i].vfsstat) 5016 ntovp->vfsstat = TRUE; 5017 } 5018 5019 if (error != 0) 5020 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5021 puterrno4(error)); 5022 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5023 return (status); 5024 } 5025 5026 static nfsstat4 5027 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5028 stateid4 *stateid) 5029 { 5030 int error = 0; 5031 struct nfs4_svgetit_arg sarg; 5032 bool_t trunc; 5033 5034 nfsstat4 status = NFS4_OK; 5035 cred_t *cr = cs->cr; 5036 vnode_t *vp = cs->vp; 5037 struct nfs4_ntov_table ntov; 5038 struct statvfs64 sb; 5039 struct vattr bva; 5040 struct flock64 bf; 5041 int in_crit = 0; 5042 uint_t saved_mask = 0; 5043 caller_context_t ct; 5044 5045 *resp = 0; 5046 sarg.sbp = &sb; 5047 nfs4_ntov_table_init(&ntov); 5048 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5049 NFS4ATTR_SETIT); 5050 if (status != NFS4_OK) { 5051 /* 5052 * failed set attrs 5053 */ 5054 goto done; 5055 } 5056 if ((sarg.vap->va_mask == 0) && 5057 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5058 /* 5059 * no further work to be done 5060 */ 5061 goto done; 5062 } 5063 5064 /* 5065 * If we got a request to set the ACL and the MODE, only 5066 * allow changing VSUID, VSGID, and VSVTX. Attempting 5067 * to change any other bits, along with setting an ACL, 5068 * gives NFS4ERR_INVAL. 5069 */ 5070 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5071 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5072 vattr_t va; 5073 5074 va.va_mask = AT_MODE; 5075 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5076 if (error) { 5077 status = puterrno4(error); 5078 goto done; 5079 } 5080 if ((sarg.vap->va_mode ^ va.va_mode) & 5081 ~(VSUID | VSGID | VSVTX)) { 5082 status = NFS4ERR_INVAL; 5083 goto done; 5084 } 5085 } 5086 5087 /* Check stateid only if size has been set */ 5088 if (sarg.vap->va_mask & AT_SIZE) { 5089 trunc = (sarg.vap->va_size == 0); 5090 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5091 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5092 if (status != NFS4_OK) 5093 goto done; 5094 } else { 5095 ct.cc_sysid = 0; 5096 ct.cc_pid = 0; 5097 ct.cc_caller_id = nfs4_srv_caller_id; 5098 ct.cc_flags = CC_DONTBLOCK; 5099 } 5100 5101 /* XXX start of possible race with delegations */ 5102 5103 /* 5104 * We need to specially handle size changes because it is 5105 * possible for the client to create a file with read-only 5106 * modes, but with the file opened for writing. If the client 5107 * then tries to set the file size, e.g. ftruncate(3C), 5108 * fcntl(F_FREESP), the normal access checking done in 5109 * VOP_SETATTR would prevent the client from doing it even though 5110 * it should be allowed to do so. To get around this, we do the 5111 * access checking for ourselves and use VOP_SPACE which doesn't 5112 * do the access checking. 5113 * Also the client should not be allowed to change the file 5114 * size if there is a conflicting non-blocking mandatory lock in 5115 * the region of the change. 5116 */ 5117 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5118 u_offset_t offset; 5119 ssize_t length; 5120 5121 /* 5122 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5123 * before returning, sarg.vap->va_mask is used to 5124 * generate the setattr reply bitmap. We also clear 5125 * AT_SIZE below before calling VOP_SPACE. For both 5126 * of these cases, the va_mask needs to be saved here 5127 * and restored after calling VOP_SETATTR. 5128 */ 5129 saved_mask = sarg.vap->va_mask; 5130 5131 /* 5132 * Check any possible conflict due to NBMAND locks. 5133 * Get into critical region before VOP_GETATTR, so the 5134 * size attribute is valid when checking conflicts. 5135 */ 5136 if (nbl_need_check(vp)) { 5137 nbl_start_crit(vp, RW_READER); 5138 in_crit = 1; 5139 } 5140 5141 bva.va_mask = AT_UID|AT_SIZE; 5142 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5143 status = puterrno4(error); 5144 goto done; 5145 } 5146 5147 if (in_crit) { 5148 if (sarg.vap->va_size < bva.va_size) { 5149 offset = sarg.vap->va_size; 5150 length = bva.va_size - sarg.vap->va_size; 5151 } else { 5152 offset = bva.va_size; 5153 length = sarg.vap->va_size - bva.va_size; 5154 } 5155 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5156 &ct)) { 5157 status = NFS4ERR_LOCKED; 5158 goto done; 5159 } 5160 } 5161 5162 if (crgetuid(cr) == bva.va_uid) { 5163 sarg.vap->va_mask &= ~AT_SIZE; 5164 bf.l_type = F_WRLCK; 5165 bf.l_whence = 0; 5166 bf.l_start = (off64_t)sarg.vap->va_size; 5167 bf.l_len = 0; 5168 bf.l_sysid = 0; 5169 bf.l_pid = 0; 5170 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5171 (offset_t)sarg.vap->va_size, cr, &ct); 5172 } 5173 } 5174 5175 if (!error && sarg.vap->va_mask != 0) 5176 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5177 5178 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5179 if (saved_mask & AT_SIZE) 5180 sarg.vap->va_mask |= AT_SIZE; 5181 5182 /* 5183 * If an ACL was being set, it has been delayed until now, 5184 * in order to set the mode (via the VOP_SETATTR() above) first. 5185 */ 5186 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5187 int i; 5188 5189 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5190 if (ntov.amap[i] == FATTR4_ACL) 5191 break; 5192 if (i < NFS4_MAXNUM_ATTRS) { 5193 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5194 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5195 if (error == 0) { 5196 *resp |= FATTR4_ACL_MASK; 5197 } else if (error == ENOTSUP) { 5198 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5199 status = NFS4ERR_ATTRNOTSUPP; 5200 goto done; 5201 } 5202 } else { 5203 NFS4_DEBUG(rfs4_debug, 5204 (CE_NOTE, "do_rfs4_op_setattr: " 5205 "unable to find ACL in fattr4")); 5206 error = EINVAL; 5207 } 5208 } 5209 5210 if (error) { 5211 /* check if a monitor detected a delegation conflict */ 5212 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5213 status = NFS4ERR_DELAY; 5214 else 5215 status = puterrno4(error); 5216 5217 /* 5218 * Set the response bitmap when setattr failed. 5219 * If VOP_SETATTR partially succeeded, test by doing a 5220 * VOP_GETATTR on the object and comparing the data 5221 * to the setattr arguments. 5222 */ 5223 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5224 } else { 5225 /* 5226 * Force modified metadata out to stable storage. 5227 */ 5228 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5229 /* 5230 * Set response bitmap 5231 */ 5232 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5233 } 5234 5235 /* Return early and already have a NFSv4 error */ 5236 done: 5237 /* 5238 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5239 * conversion sets both readable and writeable NFS4 attrs 5240 * for AT_MTIME and AT_ATIME. The line below masks out 5241 * unrequested attrs from the setattr result bitmap. This 5242 * is placed after the done: label to catch the ATTRNOTSUP 5243 * case. 5244 */ 5245 *resp &= fattrp->attrmask; 5246 5247 if (in_crit) 5248 nbl_end_crit(vp); 5249 5250 nfs4_ntov_table_free(&ntov, &sarg); 5251 5252 return (status); 5253 } 5254 5255 /* ARGSUSED */ 5256 static void 5257 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5258 struct compound_state *cs) 5259 { 5260 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5261 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5262 bslabel_t *clabel; 5263 5264 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5265 SETATTR4args *, args); 5266 5267 if (cs->vp == NULL) { 5268 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5269 goto out; 5270 } 5271 5272 /* 5273 * If there is an unshared filesystem mounted on this vnode, 5274 * do not allow to setattr on this vnode. 5275 */ 5276 if (vn_ismntpt(cs->vp)) { 5277 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5278 goto out; 5279 } 5280 5281 resp->attrsset = 0; 5282 5283 if (rdonly4(cs->exi, cs->vp, req)) { 5284 *cs->statusp = resp->status = NFS4ERR_ROFS; 5285 goto out; 5286 } 5287 5288 /* check label before setting attributes */ 5289 if (is_system_labeled()) { 5290 ASSERT(req->rq_label != NULL); 5291 clabel = req->rq_label; 5292 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5293 "got client label from request(1)", 5294 struct svc_req *, req); 5295 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5296 if (!do_rfs_label_check(clabel, cs->vp, 5297 EQUALITY_CHECK)) { 5298 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5299 goto out; 5300 } 5301 } 5302 } 5303 5304 *cs->statusp = resp->status = 5305 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5306 &args->stateid); 5307 5308 out: 5309 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5310 SETATTR4res *, resp); 5311 } 5312 5313 /* ARGSUSED */ 5314 static void 5315 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5316 struct compound_state *cs) 5317 { 5318 /* 5319 * verify and nverify are exactly the same, except that nverify 5320 * succeeds when some argument changed, and verify succeeds when 5321 * when none changed. 5322 */ 5323 5324 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5325 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5326 5327 int error; 5328 struct nfs4_svgetit_arg sarg; 5329 struct statvfs64 sb; 5330 struct nfs4_ntov_table ntov; 5331 5332 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5333 VERIFY4args *, args); 5334 5335 if (cs->vp == NULL) { 5336 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5337 goto out; 5338 } 5339 5340 sarg.sbp = &sb; 5341 nfs4_ntov_table_init(&ntov); 5342 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5343 &sarg, &ntov, NFS4ATTR_VERIT); 5344 if (resp->status != NFS4_OK) { 5345 /* 5346 * do_rfs4_set_attrs will try to verify systemwide attrs, 5347 * so could return -1 for "no match". 5348 */ 5349 if (resp->status == -1) 5350 resp->status = NFS4ERR_NOT_SAME; 5351 goto done; 5352 } 5353 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5354 switch (error) { 5355 case 0: 5356 resp->status = NFS4_OK; 5357 break; 5358 case -1: 5359 resp->status = NFS4ERR_NOT_SAME; 5360 break; 5361 default: 5362 resp->status = puterrno4(error); 5363 break; 5364 } 5365 done: 5366 *cs->statusp = resp->status; 5367 nfs4_ntov_table_free(&ntov, &sarg); 5368 out: 5369 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5370 VERIFY4res *, resp); 5371 } 5372 5373 /* ARGSUSED */ 5374 static void 5375 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5376 struct compound_state *cs) 5377 { 5378 /* 5379 * verify and nverify are exactly the same, except that nverify 5380 * succeeds when some argument changed, and verify succeeds when 5381 * when none changed. 5382 */ 5383 5384 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5385 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5386 5387 int error; 5388 struct nfs4_svgetit_arg sarg; 5389 struct statvfs64 sb; 5390 struct nfs4_ntov_table ntov; 5391 5392 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5393 NVERIFY4args *, args); 5394 5395 if (cs->vp == NULL) { 5396 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5397 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5398 NVERIFY4res *, resp); 5399 return; 5400 } 5401 sarg.sbp = &sb; 5402 nfs4_ntov_table_init(&ntov); 5403 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5404 &sarg, &ntov, NFS4ATTR_VERIT); 5405 if (resp->status != NFS4_OK) { 5406 /* 5407 * do_rfs4_set_attrs will try to verify systemwide attrs, 5408 * so could return -1 for "no match". 5409 */ 5410 if (resp->status == -1) 5411 resp->status = NFS4_OK; 5412 goto done; 5413 } 5414 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5415 switch (error) { 5416 case 0: 5417 resp->status = NFS4ERR_SAME; 5418 break; 5419 case -1: 5420 resp->status = NFS4_OK; 5421 break; 5422 default: 5423 resp->status = puterrno4(error); 5424 break; 5425 } 5426 done: 5427 *cs->statusp = resp->status; 5428 nfs4_ntov_table_free(&ntov, &sarg); 5429 5430 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5431 NVERIFY4res *, resp); 5432 } 5433 5434 /* 5435 * XXX - This should live in an NFS header file. 5436 */ 5437 #define MAX_IOVECS 12 5438 5439 /* ARGSUSED */ 5440 static void 5441 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5442 struct compound_state *cs) 5443 { 5444 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5445 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5446 int error; 5447 vnode_t *vp; 5448 struct vattr bva; 5449 u_offset_t rlimit; 5450 struct uio uio; 5451 struct iovec iov[MAX_IOVECS]; 5452 struct iovec *iovp; 5453 int iovcnt; 5454 int ioflag; 5455 cred_t *savecred, *cr; 5456 bool_t *deleg = &cs->deleg; 5457 nfsstat4 stat; 5458 int in_crit = 0; 5459 caller_context_t ct; 5460 5461 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5462 WRITE4args *, args); 5463 5464 vp = cs->vp; 5465 if (vp == NULL) { 5466 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5467 goto out; 5468 } 5469 if (cs->access == CS_ACCESS_DENIED) { 5470 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5471 goto out; 5472 } 5473 5474 cr = cs->cr; 5475 5476 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5477 deleg, TRUE, &ct)) != NFS4_OK) { 5478 *cs->statusp = resp->status = stat; 5479 goto out; 5480 } 5481 5482 /* 5483 * We have to enter the critical region before calling VOP_RWLOCK 5484 * to avoid a deadlock with ufs. 5485 */ 5486 if (nbl_need_check(vp)) { 5487 nbl_start_crit(vp, RW_READER); 5488 in_crit = 1; 5489 if (nbl_conflict(vp, NBL_WRITE, 5490 args->offset, args->data_len, 0, &ct)) { 5491 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5492 goto out; 5493 } 5494 } 5495 5496 bva.va_mask = AT_MODE | AT_UID; 5497 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5498 5499 /* 5500 * If we can't get the attributes, then we can't do the 5501 * right access checking. So, we'll fail the request. 5502 */ 5503 if (error) { 5504 *cs->statusp = resp->status = puterrno4(error); 5505 goto out; 5506 } 5507 5508 if (rdonly4(cs->exi, cs->vp, req)) { 5509 *cs->statusp = resp->status = NFS4ERR_ROFS; 5510 goto out; 5511 } 5512 5513 if (vp->v_type != VREG) { 5514 *cs->statusp = resp->status = 5515 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5516 goto out; 5517 } 5518 5519 if (crgetuid(cr) != bva.va_uid && 5520 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5521 *cs->statusp = resp->status = puterrno4(error); 5522 goto out; 5523 } 5524 5525 if (MANDLOCK(vp, bva.va_mode)) { 5526 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5527 goto out; 5528 } 5529 5530 if (args->data_len == 0) { 5531 *cs->statusp = resp->status = NFS4_OK; 5532 resp->count = 0; 5533 resp->committed = args->stable; 5534 resp->writeverf = Write4verf; 5535 goto out; 5536 } 5537 5538 if (args->mblk != NULL) { 5539 mblk_t *m; 5540 uint_t bytes, round_len; 5541 5542 iovcnt = 0; 5543 bytes = 0; 5544 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5545 for (m = args->mblk; 5546 m != NULL && bytes < round_len; 5547 m = m->b_cont) { 5548 iovcnt++; 5549 bytes += MBLKL(m); 5550 } 5551 #ifdef DEBUG 5552 /* should have ended on an mblk boundary */ 5553 if (bytes != round_len) { 5554 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5555 bytes, round_len, args->data_len); 5556 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5557 (void *)args->mblk, (void *)m); 5558 ASSERT(bytes == round_len); 5559 } 5560 #endif 5561 if (iovcnt <= MAX_IOVECS) { 5562 iovp = iov; 5563 } else { 5564 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5565 } 5566 mblk_to_iov(args->mblk, iovcnt, iovp); 5567 } else if (args->rlist != NULL) { 5568 iovcnt = 1; 5569 iovp = iov; 5570 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5571 iovp->iov_len = args->data_len; 5572 } else { 5573 iovcnt = 1; 5574 iovp = iov; 5575 iovp->iov_base = args->data_val; 5576 iovp->iov_len = args->data_len; 5577 } 5578 5579 uio.uio_iov = iovp; 5580 uio.uio_iovcnt = iovcnt; 5581 5582 uio.uio_segflg = UIO_SYSSPACE; 5583 uio.uio_extflg = UIO_COPY_DEFAULT; 5584 uio.uio_loffset = args->offset; 5585 uio.uio_resid = args->data_len; 5586 uio.uio_llimit = curproc->p_fsz_ctl; 5587 rlimit = uio.uio_llimit - args->offset; 5588 if (rlimit < (u_offset_t)uio.uio_resid) 5589 uio.uio_resid = (int)rlimit; 5590 5591 if (args->stable == UNSTABLE4) 5592 ioflag = 0; 5593 else if (args->stable == FILE_SYNC4) 5594 ioflag = FSYNC; 5595 else if (args->stable == DATA_SYNC4) 5596 ioflag = FDSYNC; 5597 else { 5598 if (iovp != iov) 5599 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5600 *cs->statusp = resp->status = NFS4ERR_INVAL; 5601 goto out; 5602 } 5603 5604 /* 5605 * We're changing creds because VM may fault and we need 5606 * the cred of the current thread to be used if quota 5607 * checking is enabled. 5608 */ 5609 savecred = curthread->t_cred; 5610 curthread->t_cred = cr; 5611 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5612 curthread->t_cred = savecred; 5613 5614 if (iovp != iov) 5615 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5616 5617 if (error) { 5618 *cs->statusp = resp->status = puterrno4(error); 5619 goto out; 5620 } 5621 5622 *cs->statusp = resp->status = NFS4_OK; 5623 resp->count = args->data_len - uio.uio_resid; 5624 5625 if (ioflag == 0) 5626 resp->committed = UNSTABLE4; 5627 else 5628 resp->committed = FILE_SYNC4; 5629 5630 resp->writeverf = Write4verf; 5631 5632 out: 5633 if (in_crit) 5634 nbl_end_crit(vp); 5635 5636 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5637 WRITE4res *, resp); 5638 } 5639 5640 5641 /* XXX put in a header file */ 5642 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5643 5644 void 5645 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5646 struct svc_req *req, cred_t *cr, int *rv) 5647 { 5648 uint_t i; 5649 struct compound_state cs; 5650 5651 if (rv != NULL) 5652 *rv = 0; 5653 rfs4_init_compound_state(&cs); 5654 /* 5655 * Form a reply tag by copying over the reqeuest tag. 5656 */ 5657 resp->tag.utf8string_val = 5658 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5659 resp->tag.utf8string_len = args->tag.utf8string_len; 5660 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5661 resp->tag.utf8string_len); 5662 5663 cs.statusp = &resp->status; 5664 cs.req = req; 5665 5666 /* 5667 * XXX for now, minorversion should be zero 5668 */ 5669 if (args->minorversion != NFS4_MINORVERSION) { 5670 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5671 &cs, COMPOUND4args *, args); 5672 resp->array_len = 0; 5673 resp->array = NULL; 5674 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5675 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5676 &cs, COMPOUND4res *, resp); 5677 return; 5678 } 5679 5680 ASSERT(exi == NULL); 5681 ASSERT(cr == NULL); 5682 5683 cr = crget(); 5684 ASSERT(cr != NULL); 5685 5686 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5687 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5688 &cs, COMPOUND4args *, args); 5689 crfree(cr); 5690 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5691 &cs, COMPOUND4res *, resp); 5692 svcerr_badcred(req->rq_xprt); 5693 if (rv != NULL) 5694 *rv = 1; 5695 return; 5696 } 5697 resp->array_len = args->array_len; 5698 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5699 KM_SLEEP); 5700 5701 cs.basecr = cr; 5702 5703 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5704 COMPOUND4args *, args); 5705 5706 /* 5707 * For now, NFS4 compound processing must be protected by 5708 * exported_lock because it can access more than one exportinfo 5709 * per compound and share/unshare can now change multiple 5710 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5711 * per proc (excluding public exinfo), and exi_count design 5712 * is sufficient to protect concurrent execution of NFS2/3 5713 * ops along with unexport. This lock will be removed as 5714 * part of the NFSv4 phase 2 namespace redesign work. 5715 */ 5716 rw_enter(&exported_lock, RW_READER); 5717 5718 /* 5719 * If this is the first compound we've seen, we need to start all 5720 * new instances' grace periods. 5721 */ 5722 if (rfs4_seen_first_compound == 0) { 5723 rfs4_grace_start_new(); 5724 /* 5725 * This must be set after rfs4_grace_start_new(), otherwise 5726 * another thread could proceed past here before the former 5727 * is finished. 5728 */ 5729 rfs4_seen_first_compound = 1; 5730 } 5731 5732 for (i = 0; i < args->array_len && cs.cont; i++) { 5733 nfs_argop4 *argop; 5734 nfs_resop4 *resop; 5735 uint_t op; 5736 5737 argop = &args->array[i]; 5738 resop = &resp->array[i]; 5739 resop->resop = argop->argop; 5740 op = (uint_t)resop->resop; 5741 5742 if (op < rfsv4disp_cnt) { 5743 /* 5744 * Count the individual ops here; NULL and COMPOUND 5745 * are counted in common_dispatch() 5746 */ 5747 rfsproccnt_v4_ptr[op].value.ui64++; 5748 5749 NFS4_DEBUG(rfs4_debug > 1, 5750 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5751 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5752 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5753 rfs4_op_string[op], *cs.statusp)); 5754 if (*cs.statusp != NFS4_OK) 5755 cs.cont = FALSE; 5756 } else { 5757 /* 5758 * This is effectively dead code since XDR code 5759 * will have already returned BADXDR if op doesn't 5760 * decode to legal value. This only done for a 5761 * day when XDR code doesn't verify v4 opcodes. 5762 */ 5763 op = OP_ILLEGAL; 5764 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5765 5766 rfs4_op_illegal(argop, resop, req, &cs); 5767 cs.cont = FALSE; 5768 } 5769 5770 /* 5771 * If not at last op, and if we are to stop, then 5772 * compact the results array. 5773 */ 5774 if ((i + 1) < args->array_len && !cs.cont) { 5775 nfs_resop4 *new_res = kmem_alloc( 5776 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5777 bcopy(resp->array, 5778 new_res, (i+1) * sizeof (nfs_resop4)); 5779 kmem_free(resp->array, 5780 args->array_len * sizeof (nfs_resop4)); 5781 5782 resp->array_len = i + 1; 5783 resp->array = new_res; 5784 } 5785 } 5786 5787 rw_exit(&exported_lock); 5788 5789 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5790 COMPOUND4res *, resp); 5791 5792 if (cs.vp) 5793 VN_RELE(cs.vp); 5794 if (cs.saved_vp) 5795 VN_RELE(cs.saved_vp); 5796 if (cs.saved_fh.nfs_fh4_val) 5797 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5798 5799 if (cs.basecr) 5800 crfree(cs.basecr); 5801 if (cs.cr) 5802 crfree(cs.cr); 5803 /* 5804 * done with this compound request, free the label 5805 */ 5806 5807 if (req->rq_label != NULL) { 5808 kmem_free(req->rq_label, sizeof (bslabel_t)); 5809 req->rq_label = NULL; 5810 } 5811 } 5812 5813 /* 5814 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5815 * XXX zero out the tag and array values. Need to investigate why the 5816 * XXX calls occur, but at least prevent the panic for now. 5817 */ 5818 void 5819 rfs4_compound_free(COMPOUND4res *resp) 5820 { 5821 uint_t i; 5822 5823 if (resp->tag.utf8string_val) { 5824 UTF8STRING_FREE(resp->tag) 5825 } 5826 5827 for (i = 0; i < resp->array_len; i++) { 5828 nfs_resop4 *resop; 5829 uint_t op; 5830 5831 resop = &resp->array[i]; 5832 op = (uint_t)resop->resop; 5833 if (op < rfsv4disp_cnt) { 5834 (*rfsv4disptab[op].dis_resfree)(resop); 5835 } 5836 } 5837 if (resp->array != NULL) { 5838 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5839 } 5840 } 5841 5842 /* 5843 * Process the value of the compound request rpc flags, as a bit-AND 5844 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5845 */ 5846 void 5847 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5848 { 5849 int i; 5850 int flag = RPC_ALL; 5851 5852 for (i = 0; flag && i < args->array_len; i++) { 5853 uint_t op; 5854 5855 op = (uint_t)args->array[i].argop; 5856 5857 if (op < rfsv4disp_cnt) 5858 flag &= rfsv4disptab[op].dis_flags; 5859 else 5860 flag = 0; 5861 } 5862 *flagp = flag; 5863 } 5864 5865 nfsstat4 5866 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5867 { 5868 nfsstat4 e; 5869 5870 rfs4_dbe_lock(cp->dbe); 5871 5872 if (cp->sysidt != LM_NOSYSID) { 5873 *sp = cp->sysidt; 5874 e = NFS4_OK; 5875 5876 } else if ((cp->sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 5877 *sp = cp->sysidt; 5878 e = NFS4_OK; 5879 5880 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 5881 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 5882 } else 5883 e = NFS4ERR_DELAY; 5884 5885 rfs4_dbe_unlock(cp->dbe); 5886 return (e); 5887 } 5888 5889 #if defined(DEBUG) && ! defined(lint) 5890 static void lock_print(char *str, int operation, struct flock64 *flk) 5891 { 5892 char *op, *type; 5893 5894 switch (operation) { 5895 case F_GETLK: op = "F_GETLK"; 5896 break; 5897 case F_SETLK: op = "F_SETLK"; 5898 break; 5899 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 5900 break; 5901 default: op = "F_UNKNOWN"; 5902 break; 5903 } 5904 switch (flk->l_type) { 5905 case F_UNLCK: type = "F_UNLCK"; 5906 break; 5907 case F_RDLCK: type = "F_RDLCK"; 5908 break; 5909 case F_WRLCK: type = "F_WRLCK"; 5910 break; 5911 default: type = "F_UNKNOWN"; 5912 break; 5913 } 5914 5915 ASSERT(flk->l_whence == 0); 5916 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 5917 str, op, type, (longlong_t)flk->l_start, 5918 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 5919 } 5920 5921 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 5922 #else 5923 #define LOCK_PRINT(d, s, t, f) 5924 #endif 5925 5926 /*ARGSUSED*/ 5927 static bool_t 5928 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 5929 { 5930 return (TRUE); 5931 } 5932 5933 /* 5934 * Look up the pathname using the vp in cs as the directory vnode. 5935 * cs->vp will be the vnode for the file on success 5936 */ 5937 5938 static nfsstat4 5939 rfs4_lookup(component4 *component, struct svc_req *req, 5940 struct compound_state *cs) 5941 { 5942 char *nm; 5943 uint32_t len; 5944 nfsstat4 status; 5945 5946 if (cs->vp == NULL) { 5947 return (NFS4ERR_NOFILEHANDLE); 5948 } 5949 if (cs->vp->v_type != VDIR) { 5950 return (NFS4ERR_NOTDIR); 5951 } 5952 5953 if (!utf8_dir_verify(component)) 5954 return (NFS4ERR_INVAL); 5955 5956 nm = utf8_to_fn(component, &len, NULL); 5957 if (nm == NULL) { 5958 return (NFS4ERR_INVAL); 5959 } 5960 5961 if (len > MAXNAMELEN) { 5962 kmem_free(nm, len); 5963 return (NFS4ERR_NAMETOOLONG); 5964 } 5965 5966 status = do_rfs4_op_lookup(nm, len, req, cs); 5967 5968 kmem_free(nm, len); 5969 5970 return (status); 5971 } 5972 5973 static nfsstat4 5974 rfs4_lookupfile(component4 *component, struct svc_req *req, 5975 struct compound_state *cs, uint32_t access, 5976 change_info4 *cinfo) 5977 { 5978 nfsstat4 status; 5979 vnode_t *dvp = cs->vp; 5980 vattr_t bva, ava, fva; 5981 int error; 5982 5983 /* Get "before" change value */ 5984 bva.va_mask = AT_CTIME|AT_SEQ; 5985 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 5986 if (error) 5987 return (puterrno4(error)); 5988 5989 /* rfs4_lookup may VN_RELE directory */ 5990 VN_HOLD(dvp); 5991 5992 status = rfs4_lookup(component, req, cs); 5993 if (status != NFS4_OK) { 5994 VN_RELE(dvp); 5995 return (status); 5996 } 5997 5998 /* 5999 * Get "after" change value, if it fails, simply return the 6000 * before value. 6001 */ 6002 ava.va_mask = AT_CTIME|AT_SEQ; 6003 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6004 ava.va_ctime = bva.va_ctime; 6005 ava.va_seq = 0; 6006 } 6007 VN_RELE(dvp); 6008 6009 /* 6010 * Validate the file is a file 6011 */ 6012 fva.va_mask = AT_TYPE|AT_MODE; 6013 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6014 if (error) 6015 return (puterrno4(error)); 6016 6017 if (fva.va_type != VREG) { 6018 if (fva.va_type == VDIR) 6019 return (NFS4ERR_ISDIR); 6020 if (fva.va_type == VLNK) 6021 return (NFS4ERR_SYMLINK); 6022 return (NFS4ERR_INVAL); 6023 } 6024 6025 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6026 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6027 6028 /* 6029 * It is undefined if VOP_LOOKUP will change va_seq, so 6030 * cinfo.atomic = TRUE only if we have 6031 * non-zero va_seq's, and they have not changed. 6032 */ 6033 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6034 cinfo->atomic = TRUE; 6035 else 6036 cinfo->atomic = FALSE; 6037 6038 /* Check for mandatory locking */ 6039 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6040 return (check_open_access(access, cs, req)); 6041 } 6042 6043 static nfsstat4 6044 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6045 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6046 { 6047 int error; 6048 nfsstat4 status = NFS4_OK; 6049 vattr_t va; 6050 6051 tryagain: 6052 6053 /* 6054 * The file open mode used is VWRITE. If the client needs 6055 * some other semantic, then it should do the access checking 6056 * itself. It would have been nice to have the file open mode 6057 * passed as part of the arguments. 6058 */ 6059 6060 *created = TRUE; 6061 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6062 6063 if (error) { 6064 *created = FALSE; 6065 6066 /* 6067 * If we got something other than file already exists 6068 * then just return this error. Otherwise, we got 6069 * EEXIST. If we were doing a GUARDED create, then 6070 * just return this error. Otherwise, we need to 6071 * make sure that this wasn't a duplicate of an 6072 * exclusive create request. 6073 * 6074 * The assumption is made that a non-exclusive create 6075 * request will never return EEXIST. 6076 */ 6077 6078 if (error != EEXIST || mode == GUARDED4) { 6079 status = puterrno4(error); 6080 return (status); 6081 } 6082 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6083 NULL, NULL, NULL); 6084 6085 if (error) { 6086 /* 6087 * We couldn't find the file that we thought that 6088 * we just created. So, we'll just try creating 6089 * it again. 6090 */ 6091 if (error == ENOENT) 6092 goto tryagain; 6093 6094 status = puterrno4(error); 6095 return (status); 6096 } 6097 6098 if (mode == UNCHECKED4) { 6099 /* existing object must be regular file */ 6100 if ((*vpp)->v_type != VREG) { 6101 if ((*vpp)->v_type == VDIR) 6102 status = NFS4ERR_ISDIR; 6103 else if ((*vpp)->v_type == VLNK) 6104 status = NFS4ERR_SYMLINK; 6105 else 6106 status = NFS4ERR_INVAL; 6107 VN_RELE(*vpp); 6108 return (status); 6109 } 6110 6111 return (NFS4_OK); 6112 } 6113 6114 /* Check for duplicate request */ 6115 ASSERT(mtime != 0); 6116 va.va_mask = AT_MTIME; 6117 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6118 if (!error) { 6119 /* We found the file */ 6120 if (va.va_mtime.tv_sec != mtime->tv_sec || 6121 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6122 /* but its not our creation */ 6123 VN_RELE(*vpp); 6124 return (NFS4ERR_EXIST); 6125 } 6126 *created = TRUE; /* retrans of create == created */ 6127 return (NFS4_OK); 6128 } 6129 VN_RELE(*vpp); 6130 return (NFS4ERR_EXIST); 6131 } 6132 6133 return (NFS4_OK); 6134 } 6135 6136 static nfsstat4 6137 check_open_access(uint32_t access, 6138 struct compound_state *cs, struct svc_req *req) 6139 { 6140 int error; 6141 vnode_t *vp; 6142 bool_t readonly; 6143 cred_t *cr = cs->cr; 6144 6145 /* For now we don't allow mandatory locking as per V2/V3 */ 6146 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6147 return (NFS4ERR_ACCESS); 6148 } 6149 6150 vp = cs->vp; 6151 ASSERT(cr != NULL && vp->v_type == VREG); 6152 6153 /* 6154 * If the file system is exported read only and we are trying 6155 * to open for write, then return NFS4ERR_ROFS 6156 */ 6157 6158 readonly = rdonly4(cs->exi, cs->vp, req); 6159 6160 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6161 return (NFS4ERR_ROFS); 6162 6163 if (access & OPEN4_SHARE_ACCESS_READ) { 6164 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6165 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6166 return (NFS4ERR_ACCESS); 6167 } 6168 } 6169 6170 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6171 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6172 if (error) 6173 return (NFS4ERR_ACCESS); 6174 } 6175 6176 return (NFS4_OK); 6177 } 6178 6179 static nfsstat4 6180 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6181 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6182 { 6183 struct nfs4_svgetit_arg sarg; 6184 struct nfs4_ntov_table ntov; 6185 6186 bool_t ntov_table_init = FALSE; 6187 struct statvfs64 sb; 6188 nfsstat4 status; 6189 vnode_t *vp; 6190 vattr_t bva, ava, iva, cva, *vap; 6191 vnode_t *dvp; 6192 timespec32_t *mtime; 6193 char *nm = NULL; 6194 uint_t buflen; 6195 bool_t created; 6196 bool_t setsize = FALSE; 6197 len_t reqsize; 6198 int error; 6199 bool_t trunc; 6200 caller_context_t ct; 6201 component4 *component; 6202 bslabel_t *clabel; 6203 struct sockaddr *ca; 6204 char *name = NULL; 6205 6206 sarg.sbp = &sb; 6207 6208 dvp = cs->vp; 6209 6210 /* Check if the file system is read only */ 6211 if (rdonly4(cs->exi, dvp, req)) 6212 return (NFS4ERR_ROFS); 6213 6214 /* check the label of including directory */ 6215 if (is_system_labeled()) { 6216 ASSERT(req->rq_label != NULL); 6217 clabel = req->rq_label; 6218 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6219 "got client label from request(1)", 6220 struct svc_req *, req); 6221 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6222 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK)) { 6223 return (NFS4ERR_ACCESS); 6224 } 6225 } 6226 } 6227 6228 /* 6229 * Get the last component of path name in nm. cs will reference 6230 * the including directory on success. 6231 */ 6232 component = &args->open_claim4_u.file; 6233 if (!utf8_dir_verify(component)) 6234 return (NFS4ERR_INVAL); 6235 6236 nm = utf8_to_fn(component, &buflen, NULL); 6237 6238 if (nm == NULL) 6239 return (NFS4ERR_RESOURCE); 6240 6241 if (buflen > MAXNAMELEN) { 6242 kmem_free(nm, buflen); 6243 return (NFS4ERR_NAMETOOLONG); 6244 } 6245 6246 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6247 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6248 if (error) { 6249 kmem_free(nm, buflen); 6250 return (puterrno4(error)); 6251 } 6252 6253 if (bva.va_type != VDIR) { 6254 kmem_free(nm, buflen); 6255 return (NFS4ERR_NOTDIR); 6256 } 6257 6258 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6259 6260 switch (args->mode) { 6261 case GUARDED4: 6262 /*FALLTHROUGH*/ 6263 case UNCHECKED4: 6264 nfs4_ntov_table_init(&ntov); 6265 ntov_table_init = TRUE; 6266 6267 *attrset = 0; 6268 status = do_rfs4_set_attrs(attrset, 6269 &args->createhow4_u.createattrs, 6270 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6271 6272 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6273 sarg.vap->va_type != VREG) { 6274 if (sarg.vap->va_type == VDIR) 6275 status = NFS4ERR_ISDIR; 6276 else if (sarg.vap->va_type == VLNK) 6277 status = NFS4ERR_SYMLINK; 6278 else 6279 status = NFS4ERR_INVAL; 6280 } 6281 6282 if (status != NFS4_OK) { 6283 kmem_free(nm, buflen); 6284 nfs4_ntov_table_free(&ntov, &sarg); 6285 *attrset = 0; 6286 return (status); 6287 } 6288 6289 vap = sarg.vap; 6290 vap->va_type = VREG; 6291 vap->va_mask |= AT_TYPE; 6292 6293 if ((vap->va_mask & AT_MODE) == 0) { 6294 vap->va_mask |= AT_MODE; 6295 vap->va_mode = (mode_t)0600; 6296 } 6297 6298 if (vap->va_mask & AT_SIZE) { 6299 6300 /* Disallow create with a non-zero size */ 6301 6302 if ((reqsize = sarg.vap->va_size) != 0) { 6303 kmem_free(nm, buflen); 6304 nfs4_ntov_table_free(&ntov, &sarg); 6305 *attrset = 0; 6306 return (NFS4ERR_INVAL); 6307 } 6308 setsize = TRUE; 6309 } 6310 break; 6311 6312 case EXCLUSIVE4: 6313 /* prohibit EXCL create of named attributes */ 6314 if (dvp->v_flag & V_XATTRDIR) { 6315 kmem_free(nm, buflen); 6316 *attrset = 0; 6317 return (NFS4ERR_INVAL); 6318 } 6319 6320 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6321 cva.va_type = VREG; 6322 /* 6323 * Ensure no time overflows. Assumes underlying 6324 * filesystem supports at least 32 bits. 6325 * Truncate nsec to usec resolution to allow valid 6326 * compares even if the underlying filesystem truncates. 6327 */ 6328 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6329 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6330 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6331 cva.va_mode = (mode_t)0; 6332 vap = &cva; 6333 break; 6334 } 6335 6336 /* If necessary, convert to UTF-8 for illbehaved clients */ 6337 6338 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6339 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6340 MAXPATHLEN + 1); 6341 6342 if (name == NULL) { 6343 kmem_free(nm, buflen); 6344 return (NFS4ERR_SERVERFAULT); 6345 } 6346 6347 status = create_vnode(dvp, name, vap, args->mode, mtime, 6348 cs->cr, &vp, &created); 6349 if (nm != name) 6350 kmem_free(name, MAXPATHLEN + 1); 6351 kmem_free(nm, buflen); 6352 6353 if (status != NFS4_OK) { 6354 if (ntov_table_init) 6355 nfs4_ntov_table_free(&ntov, &sarg); 6356 *attrset = 0; 6357 return (status); 6358 } 6359 6360 trunc = (setsize && !created); 6361 6362 if (args->mode != EXCLUSIVE4) { 6363 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6364 6365 /* 6366 * True verification that object was created with correct 6367 * attrs is impossible. The attrs could have been changed 6368 * immediately after object creation. If attributes did 6369 * not verify, the only recourse for the server is to 6370 * destroy the object. Maybe if some attrs (like gid) 6371 * are set incorrectly, the object should be destroyed; 6372 * however, seems bad as a default policy. Do we really 6373 * want to destroy an object over one of the times not 6374 * verifying correctly? For these reasons, the server 6375 * currently sets bits in attrset for createattrs 6376 * that were set; however, no verification is done. 6377 * 6378 * vmask_to_nmask accounts for vattr bits set on create 6379 * [do_rfs4_set_attrs() only sets resp bits for 6380 * non-vattr/vfs bits.] 6381 * Mask off any bits we set by default so as not to return 6382 * more attrset bits than were requested in createattrs 6383 */ 6384 if (created) { 6385 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6386 *attrset &= createmask; 6387 } else { 6388 /* 6389 * We did not create the vnode (we tried but it 6390 * already existed). In this case, the only createattr 6391 * that the spec allows the server to set is size, 6392 * and even then, it can only be set if it is 0. 6393 */ 6394 *attrset = 0; 6395 if (trunc) 6396 *attrset = FATTR4_SIZE_MASK; 6397 } 6398 } 6399 if (ntov_table_init) 6400 nfs4_ntov_table_free(&ntov, &sarg); 6401 6402 /* 6403 * Get the initial "after" sequence number, if it fails, 6404 * set to zero, time to before. 6405 */ 6406 iva.va_mask = AT_CTIME|AT_SEQ; 6407 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6408 iva.va_seq = 0; 6409 iva.va_ctime = bva.va_ctime; 6410 } 6411 6412 /* 6413 * create_vnode attempts to create the file exclusive, 6414 * if it already exists the VOP_CREATE will fail and 6415 * may not increase va_seq. It is atomic if 6416 * we haven't changed the directory, but if it has changed 6417 * we don't know what changed it. 6418 */ 6419 if (!created) { 6420 if (bva.va_seq && iva.va_seq && 6421 bva.va_seq == iva.va_seq) 6422 cinfo->atomic = TRUE; 6423 else 6424 cinfo->atomic = FALSE; 6425 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6426 } else { 6427 /* 6428 * The entry was created, we need to sync the 6429 * directory metadata. 6430 */ 6431 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6432 6433 /* 6434 * Get "after" change value, if it fails, simply return the 6435 * before value. 6436 */ 6437 ava.va_mask = AT_CTIME|AT_SEQ; 6438 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6439 ava.va_ctime = bva.va_ctime; 6440 ava.va_seq = 0; 6441 } 6442 6443 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6444 6445 /* 6446 * The cinfo->atomic = TRUE only if we have 6447 * non-zero va_seq's, and it has incremented by exactly one 6448 * during the create_vnode and it didn't 6449 * change during the VOP_FSYNC. 6450 */ 6451 if (bva.va_seq && iva.va_seq && ava.va_seq && 6452 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6453 cinfo->atomic = TRUE; 6454 else 6455 cinfo->atomic = FALSE; 6456 } 6457 6458 /* Check for mandatory locking and that the size gets set. */ 6459 cva.va_mask = AT_MODE; 6460 if (setsize) 6461 cva.va_mask |= AT_SIZE; 6462 6463 /* Assume the worst */ 6464 cs->mandlock = TRUE; 6465 6466 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6467 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6468 6469 /* 6470 * Truncate the file if necessary; this would be 6471 * the case for create over an existing file. 6472 */ 6473 6474 if (trunc) { 6475 int in_crit = 0; 6476 rfs4_file_t *fp; 6477 bool_t create = FALSE; 6478 6479 /* 6480 * We are writing over an existing file. 6481 * Check to see if we need to recall a delegation. 6482 */ 6483 rfs4_hold_deleg_policy(); 6484 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6485 if (rfs4_check_delegated_byfp(FWRITE, fp, 6486 (reqsize == 0), FALSE, FALSE, &clientid)) { 6487 rfs4_file_rele(fp); 6488 rfs4_rele_deleg_policy(); 6489 VN_RELE(vp); 6490 *attrset = 0; 6491 return (NFS4ERR_DELAY); 6492 } 6493 rfs4_file_rele(fp); 6494 } 6495 rfs4_rele_deleg_policy(); 6496 6497 if (nbl_need_check(vp)) { 6498 in_crit = 1; 6499 6500 ASSERT(reqsize == 0); 6501 6502 nbl_start_crit(vp, RW_READER); 6503 if (nbl_conflict(vp, NBL_WRITE, 0, 6504 cva.va_size, 0, NULL)) { 6505 in_crit = 0; 6506 nbl_end_crit(vp); 6507 VN_RELE(vp); 6508 *attrset = 0; 6509 return (NFS4ERR_ACCESS); 6510 } 6511 } 6512 ct.cc_sysid = 0; 6513 ct.cc_pid = 0; 6514 ct.cc_caller_id = nfs4_srv_caller_id; 6515 ct.cc_flags = CC_DONTBLOCK; 6516 6517 cva.va_mask = AT_SIZE; 6518 cva.va_size = reqsize; 6519 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6520 if (in_crit) 6521 nbl_end_crit(vp); 6522 } 6523 } 6524 6525 error = makefh4(&cs->fh, vp, cs->exi); 6526 6527 /* 6528 * Force modified data and metadata out to stable storage. 6529 */ 6530 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6531 6532 if (error) { 6533 VN_RELE(vp); 6534 *attrset = 0; 6535 return (puterrno4(error)); 6536 } 6537 6538 /* if parent dir is attrdir, set namedattr fh flag */ 6539 if (dvp->v_flag & V_XATTRDIR) 6540 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6541 6542 if (cs->vp) 6543 VN_RELE(cs->vp); 6544 6545 cs->vp = vp; 6546 6547 /* 6548 * if we did not create the file, we will need to check 6549 * the access bits on the file 6550 */ 6551 6552 if (!created) { 6553 if (setsize) 6554 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6555 status = check_open_access(args->share_access, cs, req); 6556 if (status != NFS4_OK) 6557 *attrset = 0; 6558 } 6559 return (status); 6560 } 6561 6562 /*ARGSUSED*/ 6563 static void 6564 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6565 rfs4_openowner_t *oo, delegreq_t deleg, 6566 uint32_t access, uint32_t deny, 6567 OPEN4res *resp, int deleg_cur) 6568 { 6569 /* XXX Currently not using req */ 6570 rfs4_state_t *state; 6571 rfs4_file_t *file; 6572 bool_t screate = TRUE; 6573 bool_t fcreate = TRUE; 6574 uint32_t amodes; 6575 uint32_t dmodes; 6576 rfs4_deleg_state_t *dsp; 6577 struct shrlock shr; 6578 struct shr_locowner shr_loco; 6579 sysid_t sysid; 6580 nfsstat4 status; 6581 caller_context_t ct; 6582 int fflags = 0; 6583 int recall = 0; 6584 int err; 6585 int cmd; 6586 6587 /* get the file struct and hold a lock on it during initial open */ 6588 file = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6589 if (file == NULL) { 6590 NFS4_DEBUG(rfs4_debug, 6591 (CE_NOTE, "rfs4_do_open: can't find file")); 6592 resp->status = NFS4ERR_SERVERFAULT; 6593 return; 6594 } 6595 6596 state = rfs4_findstate_by_owner_file(oo, file, &screate); 6597 if (state == NULL) { 6598 NFS4_DEBUG(rfs4_debug, 6599 (CE_NOTE, "rfs4_do_open: can't find state")); 6600 resp->status = NFS4ERR_RESOURCE; 6601 /* No need to keep any reference */ 6602 rfs4_file_rele_withunlock(file); 6603 return; 6604 } 6605 6606 /* try to get the sysid before continuing */ 6607 if ((status = rfs4_client_sysid(oo->client, &sysid)) != NFS4_OK) { 6608 resp->status = status; 6609 rfs4_file_rele(file); 6610 /* Not a fully formed open; "close" it */ 6611 if (screate == TRUE) 6612 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6613 rfs4_state_rele(state); 6614 return; 6615 } 6616 6617 /* Calculate the fflags for this OPEN. */ 6618 if (access & OPEN4_SHARE_ACCESS_READ) 6619 fflags |= FREAD; 6620 if (access & OPEN4_SHARE_ACCESS_WRITE) 6621 fflags |= FWRITE; 6622 6623 /* 6624 * Calculate the new deny and access mode that this open is adding to 6625 * the file for this open owner; 6626 */ 6627 dmodes = (deny & ~state->share_deny); 6628 amodes = (access & ~state->share_access); 6629 6630 /* 6631 * Check to see the client has already sent an open for this 6632 * open owner on this file with the same share/deny modes. 6633 * If so, we don't need to check for a conflict and we don't 6634 * need to add another shrlock. If not, then we need to 6635 * check for conflicts in deny and access before checking for 6636 * conflicts in delegation. We don't want to recall a 6637 * delegation based on an open that will eventually fail based 6638 * on shares modes. 6639 */ 6640 6641 if (dmodes || amodes) { 6642 shr.s_access = (short)access; 6643 shr.s_deny = (short)deny; 6644 shr.s_pid = rfs4_dbe_getid(oo->dbe); 6645 shr.s_sysid = sysid; 6646 shr_loco.sl_pid = shr.s_pid; 6647 shr_loco.sl_id = shr.s_sysid; 6648 shr.s_owner = (caddr_t)&shr_loco; 6649 shr.s_own_len = sizeof (shr_loco); 6650 6651 cmd = nbl_need_check(cs->vp) ? F_SHARE_NBMAND : F_SHARE; 6652 if ((err = vop_shrlock(cs->vp, cmd, &shr, fflags)) != 0) { 6653 6654 resp->status = err == EAGAIN ? 6655 NFS4ERR_SHARE_DENIED : puterrno4(err); 6656 6657 rfs4_file_rele(file); 6658 /* Not a fully formed open; "close" it */ 6659 if (screate == TRUE) 6660 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6661 rfs4_state_rele(state); 6662 return; 6663 } 6664 } 6665 6666 rfs4_dbe_lock(state->dbe); 6667 rfs4_dbe_lock(file->dbe); 6668 6669 /* 6670 * Check to see if this file is delegated and if so, if a 6671 * recall needs to be done. 6672 */ 6673 if (rfs4_check_recall(state, access)) { 6674 rfs4_dbe_unlock(file->dbe); 6675 rfs4_dbe_unlock(state->dbe); 6676 rfs4_recall_deleg(file, FALSE, state->owner->client); 6677 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6678 rfs4_dbe_lock(state->dbe); 6679 rfs4_dbe_lock(file->dbe); 6680 /* Let's see if the delegation was returned */ 6681 if (rfs4_check_recall(state, access)) { 6682 rfs4_dbe_unlock(file->dbe); 6683 rfs4_dbe_unlock(state->dbe); 6684 rfs4_file_rele(file); 6685 rfs4_update_lease(state->owner->client); 6686 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6687 /* Not a fully formed open; "close" it */ 6688 if (screate == TRUE) 6689 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6690 rfs4_state_rele(state); 6691 resp->status = NFS4ERR_DELAY; 6692 return; 6693 } 6694 } 6695 /* 6696 * the share check passed and any delegation conflict has been 6697 * taken care of, now call vop_open. 6698 * if this is the first open then call vop_open with fflags. 6699 * if not, call vn_open_upgrade with just the upgrade flags. 6700 * 6701 * if the file has been opened already, it will have the current 6702 * access mode in the state struct. if it has no share access, then 6703 * this is a new open. 6704 * 6705 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6706 * call VOP_OPEN(), just do the open upgrade. 6707 */ 6708 if (((state->share_access & OPEN4_SHARE_ACCESS_BOTH) == 0) && 6709 !deleg_cur) { 6710 ct.cc_sysid = sysid; 6711 ct.cc_pid = shr.s_pid; 6712 ct.cc_caller_id = nfs4_srv_caller_id; 6713 ct.cc_flags = CC_DONTBLOCK; 6714 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6715 if (err) { 6716 rfs4_dbe_unlock(file->dbe); 6717 rfs4_dbe_unlock(state->dbe); 6718 rfs4_file_rele(file); 6719 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6720 /* Not a fully formed open; "close" it */ 6721 if (screate == TRUE) 6722 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6723 rfs4_state_rele(state); 6724 /* check if a monitor detected a delegation conflict */ 6725 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6726 resp->status = NFS4ERR_DELAY; 6727 else 6728 resp->status = NFS4ERR_SERVERFAULT; 6729 return; 6730 } 6731 } else { /* open upgrade */ 6732 /* 6733 * calculate the fflags for the new mode that is being added 6734 * by this upgrade. 6735 */ 6736 fflags = 0; 6737 if (amodes & OPEN4_SHARE_ACCESS_READ) 6738 fflags |= FREAD; 6739 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6740 fflags |= FWRITE; 6741 vn_open_upgrade(cs->vp, fflags); 6742 } 6743 6744 if (dmodes & OPEN4_SHARE_DENY_READ) 6745 file->deny_read++; 6746 if (dmodes & OPEN4_SHARE_DENY_WRITE) 6747 file->deny_write++; 6748 file->share_deny |= deny; 6749 state->share_deny |= deny; 6750 6751 if (amodes & OPEN4_SHARE_ACCESS_READ) 6752 file->access_read++; 6753 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6754 file->access_write++; 6755 file->share_access |= access; 6756 state->share_access |= access; 6757 6758 /* 6759 * Check for delegation here. if the deleg argument is not 6760 * DELEG_ANY, then this is a reclaim from a client and 6761 * we must honor the delegation requested. If necessary we can 6762 * set the recall flag. 6763 */ 6764 6765 dsp = rfs4_grant_delegation(deleg, state, &recall); 6766 6767 cs->deleg = (file->dinfo->dtype == OPEN_DELEGATE_WRITE); 6768 6769 next_stateid(&state->stateid); 6770 6771 resp->stateid = state->stateid.stateid; 6772 6773 rfs4_dbe_unlock(file->dbe); 6774 rfs4_dbe_unlock(state->dbe); 6775 6776 if (dsp) { 6777 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6778 rfs4_deleg_state_rele(dsp); 6779 } 6780 6781 rfs4_file_rele(file); 6782 rfs4_state_rele(state); 6783 6784 resp->status = NFS4_OK; 6785 } 6786 6787 /*ARGSUSED*/ 6788 static void 6789 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6790 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6791 { 6792 change_info4 *cinfo = &resp->cinfo; 6793 bitmap4 *attrset = &resp->attrset; 6794 6795 if (args->opentype == OPEN4_NOCREATE) 6796 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6797 req, cs, args->share_access, cinfo); 6798 else { 6799 /* inhibit delegation grants during exclusive create */ 6800 6801 if (args->mode == EXCLUSIVE4) 6802 rfs4_disable_delegation(); 6803 6804 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6805 oo->client->clientid); 6806 } 6807 6808 if (resp->status == NFS4_OK) { 6809 6810 /* cs->vp cs->fh now reference the desired file */ 6811 6812 rfs4_do_open(cs, req, oo, DELEG_ANY, args->share_access, 6813 args->share_deny, resp, 0); 6814 6815 /* 6816 * If rfs4_createfile set attrset, we must 6817 * clear this attrset before the response is copied. 6818 */ 6819 if (resp->status != NFS4_OK && resp->attrset) { 6820 resp->attrset = 0; 6821 } 6822 } 6823 else 6824 *cs->statusp = resp->status; 6825 6826 if (args->mode == EXCLUSIVE4) 6827 rfs4_enable_delegation(); 6828 } 6829 6830 /*ARGSUSED*/ 6831 static void 6832 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6833 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6834 { 6835 change_info4 *cinfo = &resp->cinfo; 6836 vattr_t va; 6837 vtype_t v_type = cs->vp->v_type; 6838 int error = 0; 6839 6840 /* Verify that we have a regular file */ 6841 if (v_type != VREG) { 6842 if (v_type == VDIR) 6843 resp->status = NFS4ERR_ISDIR; 6844 else if (v_type == VLNK) 6845 resp->status = NFS4ERR_SYMLINK; 6846 else 6847 resp->status = NFS4ERR_INVAL; 6848 return; 6849 } 6850 6851 va.va_mask = AT_MODE|AT_UID; 6852 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 6853 if (error) { 6854 resp->status = puterrno4(error); 6855 return; 6856 } 6857 6858 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 6859 6860 /* 6861 * Check if we have access to the file, Note the the file 6862 * could have originally been open UNCHECKED or GUARDED 6863 * with mode bits that will now fail, but there is nothing 6864 * we can really do about that except in the case that the 6865 * owner of the file is the one requesting the open. 6866 */ 6867 if (crgetuid(cs->cr) != va.va_uid) { 6868 resp->status = check_open_access(args->share_access, cs, req); 6869 if (resp->status != NFS4_OK) { 6870 return; 6871 } 6872 } 6873 6874 /* 6875 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 6876 */ 6877 cinfo->before = 0; 6878 cinfo->after = 0; 6879 cinfo->atomic = FALSE; 6880 6881 rfs4_do_open(cs, req, oo, 6882 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 6883 args->share_access, args->share_deny, resp, 0); 6884 } 6885 6886 static void 6887 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 6888 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6889 { 6890 int error; 6891 nfsstat4 status; 6892 stateid4 stateid = 6893 args->open_claim4_u.delegate_cur_info.delegate_stateid; 6894 rfs4_deleg_state_t *dsp; 6895 6896 /* 6897 * Find the state info from the stateid and confirm that the 6898 * file is delegated. If the state openowner is the same as 6899 * the supplied openowner we're done. If not, get the file 6900 * info from the found state info. Use that file info to 6901 * create the state for this lock owner. Note solaris doen't 6902 * really need the pathname to find the file. We may want to 6903 * lookup the pathname and make sure that the vp exist and 6904 * matches the vp in the file structure. However it is 6905 * possible that the pathname nolonger exists (local process 6906 * unlinks the file), so this may not be that useful. 6907 */ 6908 6909 status = rfs4_get_deleg_state(&stateid, &dsp); 6910 if (status != NFS4_OK) { 6911 resp->status = status; 6912 return; 6913 } 6914 6915 ASSERT(dsp->finfo->dinfo->dtype != OPEN_DELEGATE_NONE); 6916 6917 /* 6918 * New lock owner, create state. Since this was probably called 6919 * in response to a CB_RECALL we set deleg to DELEG_NONE 6920 */ 6921 6922 ASSERT(cs->vp != NULL); 6923 VN_RELE(cs->vp); 6924 VN_HOLD(dsp->finfo->vp); 6925 cs->vp = dsp->finfo->vp; 6926 6927 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 6928 rfs4_deleg_state_rele(dsp); 6929 *cs->statusp = resp->status = puterrno4(error); 6930 return; 6931 } 6932 6933 /* Mark progress for delegation returns */ 6934 dsp->finfo->dinfo->time_lastwrite = gethrestime_sec(); 6935 rfs4_deleg_state_rele(dsp); 6936 rfs4_do_open(cs, req, oo, DELEG_NONE, 6937 args->share_access, args->share_deny, resp, 1); 6938 } 6939 6940 /*ARGSUSED*/ 6941 static void 6942 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 6943 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6944 { 6945 /* 6946 * Lookup the pathname, it must already exist since this file 6947 * was delegated. 6948 * 6949 * Find the file and state info for this vp and open owner pair. 6950 * check that they are in fact delegated. 6951 * check that the state access and deny modes are the same. 6952 * 6953 * Return the delgation possibly seting the recall flag. 6954 */ 6955 rfs4_file_t *file; 6956 rfs4_state_t *state; 6957 bool_t create = FALSE; 6958 bool_t dcreate = FALSE; 6959 rfs4_deleg_state_t *dsp; 6960 nfsace4 *ace; 6961 6962 6963 /* Note we ignore oflags */ 6964 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 6965 req, cs, args->share_access, &resp->cinfo); 6966 6967 if (resp->status != NFS4_OK) { 6968 return; 6969 } 6970 6971 /* get the file struct and hold a lock on it during initial open */ 6972 file = rfs4_findfile_withlock(cs->vp, NULL, &create); 6973 if (file == NULL) { 6974 NFS4_DEBUG(rfs4_debug, 6975 (CE_NOTE, "rfs4_do_opendelprev: can't find file")); 6976 resp->status = NFS4ERR_SERVERFAULT; 6977 return; 6978 } 6979 6980 state = rfs4_findstate_by_owner_file(oo, file, &create); 6981 if (state == NULL) { 6982 NFS4_DEBUG(rfs4_debug, 6983 (CE_NOTE, "rfs4_do_opendelprev: can't find state")); 6984 resp->status = NFS4ERR_SERVERFAULT; 6985 rfs4_file_rele_withunlock(file); 6986 return; 6987 } 6988 6989 rfs4_dbe_lock(state->dbe); 6990 rfs4_dbe_lock(file->dbe); 6991 if (args->share_access != state->share_access || 6992 args->share_deny != state->share_deny || 6993 state->finfo->dinfo->dtype == OPEN_DELEGATE_NONE) { 6994 NFS4_DEBUG(rfs4_debug, 6995 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 6996 rfs4_dbe_unlock(file->dbe); 6997 rfs4_dbe_unlock(state->dbe); 6998 rfs4_file_rele(file); 6999 rfs4_state_rele(state); 7000 resp->status = NFS4ERR_SERVERFAULT; 7001 return; 7002 } 7003 rfs4_dbe_unlock(file->dbe); 7004 rfs4_dbe_unlock(state->dbe); 7005 7006 dsp = rfs4_finddeleg(state, &dcreate); 7007 if (dsp == NULL) { 7008 rfs4_state_rele(state); 7009 rfs4_file_rele(file); 7010 resp->status = NFS4ERR_SERVERFAULT; 7011 return; 7012 } 7013 7014 next_stateid(&state->stateid); 7015 7016 resp->stateid = state->stateid.stateid; 7017 7018 resp->delegation.delegation_type = dsp->dtype; 7019 7020 if (dsp->dtype == OPEN_DELEGATE_READ) { 7021 open_read_delegation4 *rv = 7022 &resp->delegation.open_delegation4_u.read; 7023 7024 rv->stateid = dsp->delegid.stateid; 7025 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7026 ace = &rv->permissions; 7027 } else { 7028 open_write_delegation4 *rv = 7029 &resp->delegation.open_delegation4_u.write; 7030 7031 rv->stateid = dsp->delegid.stateid; 7032 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7033 ace = &rv->permissions; 7034 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7035 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7036 } 7037 7038 /* XXX For now */ 7039 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7040 ace->flag = 0; 7041 ace->access_mask = 0; 7042 ace->who.utf8string_len = 0; 7043 ace->who.utf8string_val = 0; 7044 7045 rfs4_deleg_state_rele(dsp); 7046 rfs4_state_rele(state); 7047 rfs4_file_rele(file); 7048 } 7049 7050 typedef enum { 7051 NFS4_CHKSEQ_OKAY = 0, 7052 NFS4_CHKSEQ_REPLAY = 1, 7053 NFS4_CHKSEQ_BAD = 2 7054 } rfs4_chkseq_t; 7055 7056 /* 7057 * Generic function for sequence number checks. 7058 */ 7059 static rfs4_chkseq_t 7060 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7061 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7062 { 7063 /* Same sequence ids and matching operations? */ 7064 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7065 if (copyres == TRUE) { 7066 rfs4_free_reply(resop); 7067 rfs4_copy_reply(resop, lastop); 7068 } 7069 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7070 "Replayed SEQID %d\n", seqid)); 7071 return (NFS4_CHKSEQ_REPLAY); 7072 } 7073 7074 /* If the incoming sequence is not the next expected then it is bad */ 7075 if (rqst_seq != seqid + 1) { 7076 if (rqst_seq == seqid) { 7077 NFS4_DEBUG(rfs4_debug, 7078 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7079 "but last op was %d current op is %d\n", 7080 lastop->resop, resop->resop)); 7081 return (NFS4_CHKSEQ_BAD); 7082 } 7083 NFS4_DEBUG(rfs4_debug, 7084 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7085 rqst_seq, seqid)); 7086 return (NFS4_CHKSEQ_BAD); 7087 } 7088 7089 /* Everything okay -- next expected */ 7090 return (NFS4_CHKSEQ_OKAY); 7091 } 7092 7093 7094 static rfs4_chkseq_t 7095 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7096 { 7097 rfs4_chkseq_t rc; 7098 7099 rfs4_dbe_lock(op->dbe); 7100 rc = rfs4_check_seqid(op->open_seqid, op->reply, seqid, resop, TRUE); 7101 rfs4_dbe_unlock(op->dbe); 7102 7103 if (rc == NFS4_CHKSEQ_OKAY) 7104 rfs4_update_lease(op->client); 7105 7106 return (rc); 7107 } 7108 7109 static rfs4_chkseq_t 7110 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, 7111 nfs_resop4 *resop) 7112 { 7113 rfs4_chkseq_t rc; 7114 7115 rfs4_dbe_lock(op->dbe); 7116 rc = rfs4_check_seqid(op->open_seqid, op->reply, 7117 olo_seqid, resop, FALSE); 7118 rfs4_dbe_unlock(op->dbe); 7119 7120 return (rc); 7121 } 7122 7123 static rfs4_chkseq_t 7124 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lp, nfs_resop4 *resop) 7125 { 7126 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7127 7128 rfs4_dbe_lock(lp->dbe); 7129 if (!lp->skip_seqid_check) 7130 rc = rfs4_check_seqid(lp->seqid, lp->reply, seqid, resop, TRUE); 7131 rfs4_dbe_unlock(lp->dbe); 7132 7133 return (rc); 7134 } 7135 7136 static void 7137 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7138 struct svc_req *req, struct compound_state *cs) 7139 { 7140 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7141 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7142 open_owner4 *owner = &args->owner; 7143 open_claim_type4 claim = args->claim; 7144 rfs4_client_t *cp; 7145 rfs4_openowner_t *oo; 7146 bool_t create; 7147 bool_t replay = FALSE; 7148 int can_reclaim; 7149 7150 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7151 OPEN4args *, args); 7152 7153 if (cs->vp == NULL) { 7154 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7155 goto end; 7156 } 7157 7158 /* 7159 * Need to check clientid and lease expiration first based on 7160 * error ordering and incrementing sequence id. 7161 */ 7162 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7163 if (cp == NULL) { 7164 *cs->statusp = resp->status = 7165 rfs4_check_clientid(&owner->clientid, 0); 7166 goto end; 7167 } 7168 7169 if (rfs4_lease_expired(cp)) { 7170 rfs4_client_close(cp); 7171 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7172 goto end; 7173 } 7174 can_reclaim = cp->can_reclaim; 7175 7176 /* 7177 * Find the open_owner for use from this point forward. Take 7178 * care in updating the sequence id based on the type of error 7179 * being returned. 7180 */ 7181 retry: 7182 create = TRUE; 7183 oo = rfs4_findopenowner(owner, &create, args->seqid); 7184 if (oo == NULL) { 7185 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 7186 rfs4_client_rele(cp); 7187 goto end; 7188 } 7189 7190 /* Hold off access to the sequence space while the open is done */ 7191 rfs4_sw_enter(&oo->oo_sw); 7192 7193 /* 7194 * If the open_owner existed before at the server, then check 7195 * the sequence id. 7196 */ 7197 if (!create && !oo->postpone_confirm) { 7198 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7199 case NFS4_CHKSEQ_BAD: 7200 if ((args->seqid > oo->open_seqid) && 7201 oo->need_confirm) { 7202 rfs4_free_opens(oo, TRUE, FALSE); 7203 rfs4_sw_exit(&oo->oo_sw); 7204 rfs4_openowner_rele(oo); 7205 goto retry; 7206 } 7207 resp->status = NFS4ERR_BAD_SEQID; 7208 goto out; 7209 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7210 replay = TRUE; 7211 goto out; 7212 default: 7213 break; 7214 } 7215 7216 /* 7217 * Sequence was ok and open owner exists 7218 * check to see if we have yet to see an 7219 * open_confirm. 7220 */ 7221 if (oo->need_confirm) { 7222 rfs4_free_opens(oo, TRUE, FALSE); 7223 rfs4_sw_exit(&oo->oo_sw); 7224 rfs4_openowner_rele(oo); 7225 goto retry; 7226 } 7227 } 7228 /* Grace only applies to regular-type OPENs */ 7229 if (rfs4_clnt_in_grace(cp) && 7230 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7231 *cs->statusp = resp->status = NFS4ERR_GRACE; 7232 goto out; 7233 } 7234 7235 /* 7236 * If previous state at the server existed then can_reclaim 7237 * will be set. If not reply NFS4ERR_NO_GRACE to the 7238 * client. 7239 */ 7240 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7241 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7242 goto out; 7243 } 7244 7245 7246 /* 7247 * Reject the open if the client has missed the grace period 7248 */ 7249 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7250 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7251 goto out; 7252 } 7253 7254 /* Couple of up-front bookkeeping items */ 7255 if (oo->need_confirm) { 7256 /* 7257 * If this is a reclaim OPEN then we should not ask 7258 * for a confirmation of the open_owner per the 7259 * protocol specification. 7260 */ 7261 if (claim == CLAIM_PREVIOUS) 7262 oo->need_confirm = FALSE; 7263 else 7264 resp->rflags |= OPEN4_RESULT_CONFIRM; 7265 } 7266 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7267 7268 /* 7269 * If there is an unshared filesystem mounted on this vnode, 7270 * do not allow to open/create in this directory. 7271 */ 7272 if (vn_ismntpt(cs->vp)) { 7273 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7274 goto out; 7275 } 7276 7277 /* 7278 * access must READ, WRITE, or BOTH. No access is invalid. 7279 * deny can be READ, WRITE, BOTH, or NONE. 7280 * bits not defined for access/deny are invalid. 7281 */ 7282 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7283 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7284 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7285 *cs->statusp = resp->status = NFS4ERR_INVAL; 7286 goto out; 7287 } 7288 7289 7290 /* 7291 * make sure attrset is zero before response is built. 7292 */ 7293 resp->attrset = 0; 7294 7295 switch (claim) { 7296 case CLAIM_NULL: 7297 rfs4_do_opennull(cs, req, args, oo, resp); 7298 break; 7299 case CLAIM_PREVIOUS: 7300 rfs4_do_openprev(cs, req, args, oo, resp); 7301 break; 7302 case CLAIM_DELEGATE_CUR: 7303 rfs4_do_opendelcur(cs, req, args, oo, resp); 7304 break; 7305 case CLAIM_DELEGATE_PREV: 7306 rfs4_do_opendelprev(cs, req, args, oo, resp); 7307 break; 7308 default: 7309 resp->status = NFS4ERR_INVAL; 7310 break; 7311 } 7312 7313 out: 7314 rfs4_client_rele(cp); 7315 7316 /* Catch sequence id handling here to make it a little easier */ 7317 switch (resp->status) { 7318 case NFS4ERR_BADXDR: 7319 case NFS4ERR_BAD_SEQID: 7320 case NFS4ERR_BAD_STATEID: 7321 case NFS4ERR_NOFILEHANDLE: 7322 case NFS4ERR_RESOURCE: 7323 case NFS4ERR_STALE_CLIENTID: 7324 case NFS4ERR_STALE_STATEID: 7325 /* 7326 * The protocol states that if any of these errors are 7327 * being returned, the sequence id should not be 7328 * incremented. Any other return requires an 7329 * increment. 7330 */ 7331 break; 7332 default: 7333 /* Always update the lease in this case */ 7334 rfs4_update_lease(oo->client); 7335 7336 /* Regular response - copy the result */ 7337 if (!replay) 7338 rfs4_update_open_resp(oo, resop, &cs->fh); 7339 7340 /* 7341 * REPLAY case: Only if the previous response was OK 7342 * do we copy the filehandle. If not OK, no 7343 * filehandle to copy. 7344 */ 7345 if (replay == TRUE && 7346 resp->status == NFS4_OK && 7347 oo->reply_fh.nfs_fh4_val) { 7348 /* 7349 * If this is a replay, we must restore the 7350 * current filehandle/vp to that of what was 7351 * returned originally. Try our best to do 7352 * it. 7353 */ 7354 nfs_fh4_fmt_t *fh_fmtp = 7355 (nfs_fh4_fmt_t *)oo->reply_fh.nfs_fh4_val; 7356 7357 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7358 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7359 7360 if (cs->exi == NULL) { 7361 resp->status = NFS4ERR_STALE; 7362 goto finish; 7363 } 7364 7365 VN_RELE(cs->vp); 7366 7367 cs->vp = nfs4_fhtovp(&oo->reply_fh, cs->exi, 7368 &resp->status); 7369 7370 if (cs->vp == NULL) 7371 goto finish; 7372 7373 nfs_fh4_copy(&oo->reply_fh, &cs->fh); 7374 } 7375 7376 /* 7377 * If this was a replay, no need to update the 7378 * sequence id. If the open_owner was not created on 7379 * this pass, then update. The first use of an 7380 * open_owner will not bump the sequence id. 7381 */ 7382 if (replay == FALSE && !create) 7383 rfs4_update_open_sequence(oo); 7384 /* 7385 * If the client is receiving an error and the 7386 * open_owner needs to be confirmed, there is no way 7387 * to notify the client of this fact ignoring the fact 7388 * that the server has no method of returning a 7389 * stateid to confirm. Therefore, the server needs to 7390 * mark this open_owner in a way as to avoid the 7391 * sequence id checking the next time the client uses 7392 * this open_owner. 7393 */ 7394 if (resp->status != NFS4_OK && oo->need_confirm) 7395 oo->postpone_confirm = TRUE; 7396 /* 7397 * If OK response then clear the postpone flag and 7398 * reset the sequence id to keep in sync with the 7399 * client. 7400 */ 7401 if (resp->status == NFS4_OK && oo->postpone_confirm) { 7402 oo->postpone_confirm = FALSE; 7403 oo->open_seqid = args->seqid; 7404 } 7405 break; 7406 } 7407 7408 finish: 7409 *cs->statusp = resp->status; 7410 7411 rfs4_sw_exit(&oo->oo_sw); 7412 rfs4_openowner_rele(oo); 7413 7414 end: 7415 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7416 OPEN4res *, resp); 7417 } 7418 7419 /*ARGSUSED*/ 7420 void 7421 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7422 struct svc_req *req, struct compound_state *cs) 7423 { 7424 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7425 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7426 rfs4_state_t *sp; 7427 nfsstat4 status; 7428 7429 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7430 OPEN_CONFIRM4args *, args); 7431 7432 if (cs->vp == NULL) { 7433 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7434 goto out; 7435 } 7436 7437 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7438 if (status != NFS4_OK) { 7439 *cs->statusp = resp->status = status; 7440 goto out; 7441 } 7442 7443 /* Ensure specified filehandle matches */ 7444 if (cs->vp != sp->finfo->vp) { 7445 rfs4_state_rele(sp); 7446 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7447 goto out; 7448 } 7449 7450 /* hold off other access to open_owner while we tinker */ 7451 rfs4_sw_enter(&sp->owner->oo_sw); 7452 7453 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7454 case NFS4_CHECK_STATEID_OKAY: 7455 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7456 resop) != 0) { 7457 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7458 break; 7459 } 7460 /* 7461 * If it is the appropriate stateid and determined to 7462 * be "OKAY" then this means that the stateid does not 7463 * need to be confirmed and the client is in error for 7464 * sending an OPEN_CONFIRM. 7465 */ 7466 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7467 break; 7468 case NFS4_CHECK_STATEID_OLD: 7469 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7470 break; 7471 case NFS4_CHECK_STATEID_BAD: 7472 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7473 break; 7474 case NFS4_CHECK_STATEID_EXPIRED: 7475 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7476 break; 7477 case NFS4_CHECK_STATEID_CLOSED: 7478 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7479 break; 7480 case NFS4_CHECK_STATEID_REPLAY: 7481 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7482 case NFS4_CHKSEQ_OKAY: 7483 /* 7484 * This is replayed stateid; if seqid matches 7485 * next expected, then client is using wrong seqid. 7486 */ 7487 /* fall through */ 7488 case NFS4_CHKSEQ_BAD: 7489 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7490 break; 7491 case NFS4_CHKSEQ_REPLAY: 7492 /* 7493 * Note this case is the duplicate case so 7494 * resp->status is already set. 7495 */ 7496 *cs->statusp = resp->status; 7497 rfs4_update_lease(sp->owner->client); 7498 break; 7499 } 7500 break; 7501 case NFS4_CHECK_STATEID_UNCONFIRMED: 7502 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7503 resop) != NFS4_CHKSEQ_OKAY) { 7504 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7505 break; 7506 } 7507 *cs->statusp = resp->status = NFS4_OK; 7508 7509 next_stateid(&sp->stateid); 7510 resp->open_stateid = sp->stateid.stateid; 7511 sp->owner->need_confirm = FALSE; 7512 rfs4_update_lease(sp->owner->client); 7513 rfs4_update_open_sequence(sp->owner); 7514 rfs4_update_open_resp(sp->owner, resop, NULL); 7515 break; 7516 default: 7517 ASSERT(FALSE); 7518 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7519 break; 7520 } 7521 rfs4_sw_exit(&sp->owner->oo_sw); 7522 rfs4_state_rele(sp); 7523 7524 out: 7525 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7526 OPEN_CONFIRM4res *, resp); 7527 } 7528 7529 /*ARGSUSED*/ 7530 void 7531 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7532 struct svc_req *req, struct compound_state *cs) 7533 { 7534 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7535 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7536 uint32_t access = args->share_access; 7537 uint32_t deny = args->share_deny; 7538 nfsstat4 status; 7539 rfs4_state_t *sp; 7540 rfs4_file_t *fp; 7541 int fflags = 0; 7542 7543 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7544 OPEN_DOWNGRADE4args *, args); 7545 7546 if (cs->vp == NULL) { 7547 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7548 goto out; 7549 } 7550 7551 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7552 if (status != NFS4_OK) { 7553 *cs->statusp = resp->status = status; 7554 goto out; 7555 } 7556 7557 /* Ensure specified filehandle matches */ 7558 if (cs->vp != sp->finfo->vp) { 7559 rfs4_state_rele(sp); 7560 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7561 goto out; 7562 } 7563 7564 /* hold off other access to open_owner while we tinker */ 7565 rfs4_sw_enter(&sp->owner->oo_sw); 7566 7567 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7568 case NFS4_CHECK_STATEID_OKAY: 7569 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7570 resop) != NFS4_CHKSEQ_OKAY) { 7571 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7572 goto end; 7573 } 7574 break; 7575 case NFS4_CHECK_STATEID_OLD: 7576 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7577 goto end; 7578 case NFS4_CHECK_STATEID_BAD: 7579 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7580 goto end; 7581 case NFS4_CHECK_STATEID_EXPIRED: 7582 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7583 goto end; 7584 case NFS4_CHECK_STATEID_CLOSED: 7585 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7586 goto end; 7587 case NFS4_CHECK_STATEID_UNCONFIRMED: 7588 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7589 goto end; 7590 case NFS4_CHECK_STATEID_REPLAY: 7591 /* Check the sequence id for the open owner */ 7592 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7593 case NFS4_CHKSEQ_OKAY: 7594 /* 7595 * This is replayed stateid; if seqid matches 7596 * next expected, then client is using wrong seqid. 7597 */ 7598 /* fall through */ 7599 case NFS4_CHKSEQ_BAD: 7600 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7601 goto end; 7602 case NFS4_CHKSEQ_REPLAY: 7603 /* 7604 * Note this case is the duplicate case so 7605 * resp->status is already set. 7606 */ 7607 *cs->statusp = resp->status; 7608 rfs4_update_lease(sp->owner->client); 7609 goto end; 7610 } 7611 break; 7612 default: 7613 ASSERT(FALSE); 7614 break; 7615 } 7616 7617 rfs4_dbe_lock(sp->dbe); 7618 /* 7619 * Check that the new access modes and deny modes are valid. 7620 * Check that no invalid bits are set. 7621 */ 7622 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7623 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7624 *cs->statusp = resp->status = NFS4ERR_INVAL; 7625 rfs4_update_open_sequence(sp->owner); 7626 rfs4_dbe_unlock(sp->dbe); 7627 goto end; 7628 } 7629 7630 /* 7631 * The new modes must be a subset of the current modes and 7632 * the access must specify at least one mode. To test that 7633 * the new mode is a subset of the current modes we bitwise 7634 * AND them together and check that the result equals the new 7635 * mode. For example: 7636 * New mode, access == R and current mode, sp->share_access == RW 7637 * access & sp->share_access == R == access, so the new access mode 7638 * is valid. Consider access == RW, sp->share_access = R 7639 * access & sp->share_access == R != access, so the new access mode 7640 * is invalid. 7641 */ 7642 if ((access & sp->share_access) != access || 7643 (deny & sp->share_deny) != deny || 7644 (access & 7645 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7646 *cs->statusp = resp->status = NFS4ERR_INVAL; 7647 rfs4_update_open_sequence(sp->owner); 7648 rfs4_dbe_unlock(sp->dbe); 7649 goto end; 7650 } 7651 7652 /* 7653 * Release any share locks associated with this stateID. 7654 * Strictly speaking, this violates the spec because the 7655 * spec effectively requires that open downgrade be atomic. 7656 * At present, fs_shrlock does not have this capability. 7657 */ 7658 rfs4_dbe_unlock(sp->dbe); 7659 rfs4_unshare(sp); 7660 rfs4_dbe_lock(sp->dbe); 7661 7662 fp = sp->finfo; 7663 rfs4_dbe_lock(fp->dbe); 7664 7665 /* 7666 * If the current mode has deny read and the new mode 7667 * does not, decrement the number of deny read mode bits 7668 * and if it goes to zero turn off the deny read bit 7669 * on the file. 7670 */ 7671 if ((sp->share_deny & OPEN4_SHARE_DENY_READ) && 7672 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7673 fp->deny_read--; 7674 if (fp->deny_read == 0) 7675 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 7676 } 7677 7678 /* 7679 * If the current mode has deny write and the new mode 7680 * does not, decrement the number of deny write mode bits 7681 * and if it goes to zero turn off the deny write bit 7682 * on the file. 7683 */ 7684 if ((sp->share_deny & OPEN4_SHARE_DENY_WRITE) && 7685 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7686 fp->deny_write--; 7687 if (fp->deny_write == 0) 7688 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7689 } 7690 7691 /* 7692 * If the current mode has access read and the new mode 7693 * does not, decrement the number of access read mode bits 7694 * and if it goes to zero turn off the access read bit 7695 * on the file. set fflags to FREAD for the call to 7696 * vn_open_downgrade(). 7697 */ 7698 if ((sp->share_access & OPEN4_SHARE_ACCESS_READ) && 7699 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7700 fp->access_read--; 7701 if (fp->access_read == 0) 7702 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7703 fflags |= FREAD; 7704 } 7705 7706 /* 7707 * If the current mode has access write and the new mode 7708 * does not, decrement the number of access write mode bits 7709 * and if it goes to zero turn off the access write bit 7710 * on the file. set fflags to FWRITE for the call to 7711 * vn_open_downgrade(). 7712 */ 7713 if ((sp->share_access & OPEN4_SHARE_ACCESS_WRITE) && 7714 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7715 fp->access_write--; 7716 if (fp->access_write == 0) 7717 fp->share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7718 fflags |= FWRITE; 7719 } 7720 7721 /* Set the new access and deny modes */ 7722 sp->share_access = access; 7723 sp->share_deny = deny; 7724 /* Check that the file is still accessible */ 7725 ASSERT(fp->share_access); 7726 7727 rfs4_dbe_unlock(fp->dbe); 7728 7729 rfs4_dbe_unlock(sp->dbe); 7730 7731 if ((status = rfs4_share(sp)) != NFS4_OK) { 7732 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7733 rfs4_update_open_sequence(sp->owner); 7734 goto end; 7735 } 7736 7737 /* 7738 * we successfully downgraded the share lock, now we need to downgrade 7739 * the open. it is possible that the downgrade was only for a deny 7740 * mode and we have nothing else to do. 7741 */ 7742 if ((fflags & (FREAD|FWRITE)) != 0) 7743 vn_open_downgrade(cs->vp, fflags); 7744 7745 rfs4_dbe_lock(sp->dbe); 7746 7747 /* Update the stateid */ 7748 next_stateid(&sp->stateid); 7749 resp->open_stateid = sp->stateid.stateid; 7750 7751 rfs4_dbe_unlock(sp->dbe); 7752 7753 *cs->statusp = resp->status = NFS4_OK; 7754 /* Update the lease */ 7755 rfs4_update_lease(sp->owner->client); 7756 /* And the sequence */ 7757 rfs4_update_open_sequence(sp->owner); 7758 rfs4_update_open_resp(sp->owner, resop, NULL); 7759 7760 end: 7761 rfs4_sw_exit(&sp->owner->oo_sw); 7762 rfs4_state_rele(sp); 7763 out: 7764 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7765 OPEN_DOWNGRADE4res *, resp); 7766 } 7767 7768 /* 7769 * The logic behind this function is detailed in the NFSv4 RFC in the 7770 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7771 * that section for explicit guidance to server behavior for 7772 * SETCLIENTID. 7773 */ 7774 void 7775 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7776 struct svc_req *req, struct compound_state *cs) 7777 { 7778 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7779 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7780 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7781 bool_t create = TRUE; 7782 char *addr, *netid; 7783 int len; 7784 7785 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7786 SETCLIENTID4args *, args); 7787 retry: 7788 newcp = cp_confirmed = cp_unconfirmed = NULL; 7789 7790 /* 7791 * In search of an EXISTING client matching the incoming 7792 * request to establish a new client identifier at the server 7793 */ 7794 create = TRUE; 7795 cp = rfs4_findclient(&args->client, &create, NULL); 7796 7797 /* Should never happen */ 7798 ASSERT(cp != NULL); 7799 7800 if (cp == NULL) { 7801 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7802 goto out; 7803 } 7804 7805 /* 7806 * Easiest case. Client identifier is newly created and is 7807 * unconfirmed. Also note that for this case, no other 7808 * entries exist for the client identifier. Nothing else to 7809 * check. Just setup the response and respond. 7810 */ 7811 if (create) { 7812 *cs->statusp = res->status = NFS4_OK; 7813 res->SETCLIENTID4res_u.resok4.clientid = cp->clientid; 7814 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7815 cp->confirm_verf; 7816 /* Setup callback information; CB_NULL confirmation later */ 7817 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 7818 7819 rfs4_client_rele(cp); 7820 goto out; 7821 } 7822 7823 /* 7824 * An existing, confirmed client may exist but it may not have 7825 * been active for at least one lease period. If so, then 7826 * "close" the client and create a new client identifier 7827 */ 7828 if (rfs4_lease_expired(cp)) { 7829 rfs4_client_close(cp); 7830 goto retry; 7831 } 7832 7833 if (cp->need_confirm == TRUE) 7834 cp_unconfirmed = cp; 7835 else 7836 cp_confirmed = cp; 7837 7838 cp = NULL; 7839 7840 /* 7841 * We have a confirmed client, now check for an 7842 * unconfimred entry 7843 */ 7844 if (cp_confirmed) { 7845 /* If creds don't match then client identifier is inuse */ 7846 if (!creds_ok(cp_confirmed->cr_set, req, cs)) { 7847 rfs4_cbinfo_t *cbp; 7848 /* 7849 * Some one else has established this client 7850 * id. Try and say * who they are. We will use 7851 * the call back address supplied by * the 7852 * first client. 7853 */ 7854 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7855 7856 addr = netid = NULL; 7857 7858 cbp = &cp_confirmed->cbinfo; 7859 if (cbp->cb_callback.cb_location.r_addr && 7860 cbp->cb_callback.cb_location.r_netid) { 7861 cb_client4 *cbcp = &cbp->cb_callback; 7862 7863 len = strlen(cbcp->cb_location.r_addr)+1; 7864 addr = kmem_alloc(len, KM_SLEEP); 7865 bcopy(cbcp->cb_location.r_addr, addr, len); 7866 len = strlen(cbcp->cb_location.r_netid)+1; 7867 netid = kmem_alloc(len, KM_SLEEP); 7868 bcopy(cbcp->cb_location.r_netid, netid, len); 7869 } 7870 7871 res->SETCLIENTID4res_u.client_using.r_addr = addr; 7872 res->SETCLIENTID4res_u.client_using.r_netid = netid; 7873 7874 rfs4_client_rele(cp_confirmed); 7875 } 7876 7877 /* 7878 * Confirmed, creds match, and verifier matches; must 7879 * be an update of the callback info 7880 */ 7881 if (cp_confirmed->nfs_client.verifier == 7882 args->client.verifier) { 7883 /* Setup callback information */ 7884 rfs4_client_setcb(cp_confirmed, &args->callback, 7885 args->callback_ident); 7886 7887 /* everything okay -- move ahead */ 7888 *cs->statusp = res->status = NFS4_OK; 7889 res->SETCLIENTID4res_u.resok4.clientid = 7890 cp_confirmed->clientid; 7891 7892 /* update the confirm_verifier and return it */ 7893 rfs4_client_scv_next(cp_confirmed); 7894 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7895 cp_confirmed->confirm_verf; 7896 7897 rfs4_client_rele(cp_confirmed); 7898 goto out; 7899 } 7900 7901 /* 7902 * Creds match but the verifier doesn't. Must search 7903 * for an unconfirmed client that would be replaced by 7904 * this request. 7905 */ 7906 create = FALSE; 7907 cp_unconfirmed = rfs4_findclient(&args->client, &create, 7908 cp_confirmed); 7909 } 7910 7911 /* 7912 * At this point, we have taken care of the brand new client 7913 * struct, INUSE case, update of an existing, and confirmed 7914 * client struct. 7915 */ 7916 7917 /* 7918 * check to see if things have changed while we originally 7919 * picked up the client struct. If they have, then return and 7920 * retry the processing of this SETCLIENTID request. 7921 */ 7922 if (cp_unconfirmed) { 7923 rfs4_dbe_lock(cp_unconfirmed->dbe); 7924 if (!cp_unconfirmed->need_confirm) { 7925 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7926 rfs4_client_rele(cp_unconfirmed); 7927 if (cp_confirmed) 7928 rfs4_client_rele(cp_confirmed); 7929 goto retry; 7930 } 7931 /* do away with the old unconfirmed one */ 7932 rfs4_dbe_invalidate(cp_unconfirmed->dbe); 7933 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7934 rfs4_client_rele(cp_unconfirmed); 7935 cp_unconfirmed = NULL; 7936 } 7937 7938 /* 7939 * This search will temporarily hide the confirmed client 7940 * struct while a new client struct is created as the 7941 * unconfirmed one. 7942 */ 7943 create = TRUE; 7944 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 7945 7946 ASSERT(newcp != NULL); 7947 7948 if (newcp == NULL) { 7949 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7950 rfs4_client_rele(cp_confirmed); 7951 goto out; 7952 } 7953 7954 /* 7955 * If one was not created, then a similar request must be in 7956 * process so release and start over with this one 7957 */ 7958 if (create != TRUE) { 7959 rfs4_client_rele(newcp); 7960 if (cp_confirmed) 7961 rfs4_client_rele(cp_confirmed); 7962 goto retry; 7963 } 7964 7965 *cs->statusp = res->status = NFS4_OK; 7966 res->SETCLIENTID4res_u.resok4.clientid = newcp->clientid; 7967 res->SETCLIENTID4res_u.resok4.setclientid_confirm = newcp->confirm_verf; 7968 /* Setup callback information; CB_NULL confirmation later */ 7969 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 7970 7971 newcp->cp_confirmed = cp_confirmed; 7972 7973 rfs4_client_rele(newcp); 7974 7975 out: 7976 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 7977 SETCLIENTID4res *, res); 7978 } 7979 7980 /*ARGSUSED*/ 7981 void 7982 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7983 struct svc_req *req, struct compound_state *cs) 7984 { 7985 SETCLIENTID_CONFIRM4args *args = 7986 &argop->nfs_argop4_u.opsetclientid_confirm; 7987 SETCLIENTID_CONFIRM4res *res = 7988 &resop->nfs_resop4_u.opsetclientid_confirm; 7989 rfs4_client_t *cp, *cptoclose = NULL; 7990 7991 DTRACE_NFSV4_2(op__setclientid__confirm__start, 7992 struct compound_state *, cs, 7993 SETCLIENTID_CONFIRM4args *, args); 7994 7995 *cs->statusp = res->status = NFS4_OK; 7996 7997 cp = rfs4_findclient_by_id(args->clientid, TRUE); 7998 7999 if (cp == NULL) { 8000 *cs->statusp = res->status = 8001 rfs4_check_clientid(&args->clientid, 1); 8002 goto out; 8003 } 8004 8005 if (!creds_ok(cp, req, cs)) { 8006 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8007 rfs4_client_rele(cp); 8008 goto out; 8009 } 8010 8011 /* If the verifier doesn't match, the record doesn't match */ 8012 if (cp->confirm_verf != args->setclientid_confirm) { 8013 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8014 rfs4_client_rele(cp); 8015 goto out; 8016 } 8017 8018 rfs4_dbe_lock(cp->dbe); 8019 cp->need_confirm = FALSE; 8020 if (cp->cp_confirmed) { 8021 cptoclose = cp->cp_confirmed; 8022 cptoclose->ss_remove = 1; 8023 cp->cp_confirmed = NULL; 8024 } 8025 8026 /* 8027 * Update the client's associated server instance, if it's changed 8028 * since the client was created. 8029 */ 8030 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8031 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8032 8033 /* 8034 * Record clientid in stable storage. 8035 * Must be done after server instance has been assigned. 8036 */ 8037 rfs4_ss_clid(cp, req); 8038 8039 rfs4_dbe_unlock(cp->dbe); 8040 8041 if (cptoclose) 8042 /* don't need to rele, client_close does it */ 8043 rfs4_client_close(cptoclose); 8044 8045 /* If needed, initiate CB_NULL call for callback path */ 8046 rfs4_deleg_cb_check(cp); 8047 rfs4_update_lease(cp); 8048 8049 /* 8050 * Check to see if client can perform reclaims 8051 */ 8052 rfs4_ss_chkclid(cp); 8053 8054 rfs4_client_rele(cp); 8055 8056 out: 8057 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8058 struct compound_state *, cs, 8059 SETCLIENTID_CONFIRM4 *, res); 8060 } 8061 8062 8063 /*ARGSUSED*/ 8064 void 8065 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8066 struct svc_req *req, struct compound_state *cs) 8067 { 8068 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8069 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8070 rfs4_state_t *sp; 8071 nfsstat4 status; 8072 8073 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8074 CLOSE4args *, args); 8075 8076 if (cs->vp == NULL) { 8077 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8078 goto out; 8079 } 8080 8081 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8082 if (status != NFS4_OK) { 8083 *cs->statusp = resp->status = status; 8084 goto out; 8085 } 8086 8087 /* Ensure specified filehandle matches */ 8088 if (cs->vp != sp->finfo->vp) { 8089 rfs4_state_rele(sp); 8090 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8091 goto out; 8092 } 8093 8094 /* hold off other access to open_owner while we tinker */ 8095 rfs4_sw_enter(&sp->owner->oo_sw); 8096 8097 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8098 case NFS4_CHECK_STATEID_OKAY: 8099 if (rfs4_check_open_seqid(args->seqid, sp->owner, 8100 resop) != NFS4_CHKSEQ_OKAY) { 8101 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8102 goto end; 8103 } 8104 break; 8105 case NFS4_CHECK_STATEID_OLD: 8106 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8107 goto end; 8108 case NFS4_CHECK_STATEID_BAD: 8109 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8110 goto end; 8111 case NFS4_CHECK_STATEID_EXPIRED: 8112 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8113 goto end; 8114 case NFS4_CHECK_STATEID_CLOSED: 8115 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8116 goto end; 8117 case NFS4_CHECK_STATEID_UNCONFIRMED: 8118 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8119 goto end; 8120 case NFS4_CHECK_STATEID_REPLAY: 8121 /* Check the sequence id for the open owner */ 8122 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 8123 case NFS4_CHKSEQ_OKAY: 8124 /* 8125 * This is replayed stateid; if seqid matches 8126 * next expected, then client is using wrong seqid. 8127 */ 8128 /* FALL THROUGH */ 8129 case NFS4_CHKSEQ_BAD: 8130 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8131 goto end; 8132 case NFS4_CHKSEQ_REPLAY: 8133 /* 8134 * Note this case is the duplicate case so 8135 * resp->status is already set. 8136 */ 8137 *cs->statusp = resp->status; 8138 rfs4_update_lease(sp->owner->client); 8139 goto end; 8140 } 8141 break; 8142 default: 8143 ASSERT(FALSE); 8144 break; 8145 } 8146 8147 rfs4_dbe_lock(sp->dbe); 8148 8149 /* Update the stateid. */ 8150 next_stateid(&sp->stateid); 8151 resp->open_stateid = sp->stateid.stateid; 8152 8153 rfs4_dbe_unlock(sp->dbe); 8154 8155 rfs4_update_lease(sp->owner->client); 8156 rfs4_update_open_sequence(sp->owner); 8157 rfs4_update_open_resp(sp->owner, resop, NULL); 8158 8159 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8160 8161 *cs->statusp = resp->status = status; 8162 8163 end: 8164 rfs4_sw_exit(&sp->owner->oo_sw); 8165 rfs4_state_rele(sp); 8166 out: 8167 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8168 CLOSE4res *, resp); 8169 } 8170 8171 /* 8172 * Manage the counts on the file struct and close all file locks 8173 */ 8174 /*ARGSUSED*/ 8175 void 8176 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8177 bool_t close_of_client) 8178 { 8179 rfs4_file_t *fp = sp->finfo; 8180 rfs4_lo_state_t *lsp; 8181 struct shrlock shr; 8182 struct shr_locowner shr_loco; 8183 int fflags, s_access, s_deny; 8184 8185 fflags = s_access = s_deny = 0; 8186 /* 8187 * Decrement the count for each access and deny bit that this 8188 * state has contributed to the file. If the file counts go to zero 8189 * clear the appropriate bit in the appropriate mask. 8190 */ 8191 8192 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 8193 fp->access_read--; 8194 fflags |= FREAD; 8195 s_access |= F_RDACC; 8196 if (fp->access_read == 0) 8197 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 8198 } 8199 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 8200 fp->access_write--; 8201 fflags |= FWRITE; 8202 s_access |= F_WRACC; 8203 if (fp->access_write == 0) 8204 fp->share_access &= ~OPEN4_SHARE_ACCESS_WRITE; 8205 } 8206 if (sp->share_deny & OPEN4_SHARE_DENY_READ) { 8207 fp->deny_read--; 8208 s_deny |= F_RDDNY; 8209 if (fp->deny_read == 0) 8210 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 8211 } 8212 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) { 8213 fp->deny_write--; 8214 s_deny |= F_WRDNY; 8215 if (fp->deny_write == 0) 8216 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8217 } 8218 8219 /* 8220 * If this call is part of the larger closing down of client 8221 * state then it is just easier to release all locks 8222 * associated with this client instead of going through each 8223 * individual file and cleaning locks there. 8224 */ 8225 if (close_of_client) { 8226 if (sp->owner->client->unlksys_completed == FALSE && 8227 sp->lockownerlist.next->lsp != NULL && 8228 sp->owner->client->sysidt != LM_NOSYSID) { 8229 /* Is the PxFS kernel module loaded? */ 8230 if (lm_remove_file_locks != NULL) { 8231 int new_sysid; 8232 8233 /* Encode the cluster nodeid in new sysid */ 8234 new_sysid = sp->owner->client->sysidt; 8235 lm_set_nlmid_flk(&new_sysid); 8236 8237 /* 8238 * This PxFS routine removes file locks for a 8239 * client over all nodes of a cluster. 8240 */ 8241 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8242 "lm_remove_file_locks(sysid=0x%x)\n", 8243 new_sysid)); 8244 (*lm_remove_file_locks)(new_sysid); 8245 } else { 8246 struct flock64 flk; 8247 8248 /* Release all locks for this client */ 8249 flk.l_type = F_UNLKSYS; 8250 flk.l_whence = 0; 8251 flk.l_start = 0; 8252 flk.l_len = 0; 8253 flk.l_sysid = sp->owner->client->sysidt; 8254 flk.l_pid = 0; 8255 (void) VOP_FRLOCK(sp->finfo->vp, F_SETLK, &flk, 8256 F_REMOTELOCK | FREAD | FWRITE, 8257 (u_offset_t)0, NULL, CRED(), NULL); 8258 } 8259 8260 sp->owner->client->unlksys_completed = TRUE; 8261 } 8262 } 8263 8264 /* 8265 * Release all locks on this file by this lock owner or at 8266 * least mark the locks as having been released 8267 */ 8268 for (lsp = sp->lockownerlist.next->lsp; lsp != NULL; 8269 lsp = lsp->lockownerlist.next->lsp) { 8270 8271 lsp->locks_cleaned = TRUE; 8272 8273 /* Was this already taken care of above? */ 8274 if (!close_of_client && 8275 sp->owner->client->sysidt != LM_NOSYSID) 8276 (void) cleanlocks(sp->finfo->vp, lsp->locker->pid, 8277 lsp->locker->client->sysidt); 8278 } 8279 8280 /* 8281 * Release any shrlocks associated with this open state ID. 8282 * This must be done before the rfs4_state gets marked closed. 8283 */ 8284 if (sp->owner->client->sysidt != LM_NOSYSID) { 8285 shr.s_access = s_access; 8286 shr.s_deny = s_deny; 8287 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 8288 shr.s_sysid = sp->owner->client->sysidt; 8289 shr_loco.sl_pid = shr.s_pid; 8290 shr_loco.sl_id = shr.s_sysid; 8291 shr.s_owner = (caddr_t)&shr_loco; 8292 shr.s_own_len = sizeof (shr_loco); 8293 (void) vop_shrlock(sp->finfo->vp, F_UNSHARE, &shr, fflags); 8294 } 8295 8296 (void) VOP_CLOSE(fp->vp, fflags, 1, (offset_t)0, cr, NULL); 8297 } 8298 8299 /* 8300 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8301 */ 8302 static nfsstat4 8303 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8304 { 8305 rfs4_lockowner_t *lo; 8306 rfs4_client_t *cp; 8307 uint32_t len; 8308 8309 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8310 if (lo != NULL) { 8311 cp = lo->client; 8312 if (rfs4_lease_expired(cp)) { 8313 rfs4_lockowner_rele(lo); 8314 rfs4_dbe_hold(cp->dbe); 8315 rfs4_client_close(cp); 8316 return (NFS4ERR_EXPIRED); 8317 } 8318 dp->owner.clientid = lo->owner.clientid; 8319 len = lo->owner.owner_len; 8320 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8321 bcopy(lo->owner.owner_val, dp->owner.owner_val, len); 8322 dp->owner.owner_len = len; 8323 rfs4_lockowner_rele(lo); 8324 goto finish; 8325 } 8326 8327 /* 8328 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8329 * of the client id contain the boot time for a NFS4 lock. So we 8330 * fabricate and identity by setting clientid to the sysid, and 8331 * the lock owner to the pid. 8332 */ 8333 dp->owner.clientid = flk->l_sysid; 8334 len = sizeof (pid_t); 8335 dp->owner.owner_len = len; 8336 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8337 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8338 finish: 8339 dp->offset = flk->l_start; 8340 dp->length = flk->l_len; 8341 8342 if (flk->l_type == F_RDLCK) 8343 dp->locktype = READ_LT; 8344 else if (flk->l_type == F_WRLCK) 8345 dp->locktype = WRITE_LT; 8346 else 8347 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8348 8349 return (NFS4_OK); 8350 } 8351 8352 static int 8353 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8354 { 8355 int error; 8356 struct flock64 flk; 8357 int i; 8358 clock_t delaytime; 8359 int cmd; 8360 8361 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8362 retry: 8363 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8364 8365 for (i = 0; i < rfs4_maxlock_tries; i++) { 8366 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8367 error = VOP_FRLOCK(vp, cmd, 8368 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8369 8370 if (error != EAGAIN && error != EACCES) 8371 break; 8372 8373 if (i < rfs4_maxlock_tries - 1) { 8374 delay(delaytime); 8375 delaytime *= 2; 8376 } 8377 } 8378 8379 if (error == EAGAIN || error == EACCES) { 8380 /* Get the owner of the lock */ 8381 flk = *flock; 8382 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8383 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8384 (u_offset_t)0, NULL, cred, NULL) == 0) { 8385 if (flk.l_type == F_UNLCK) { 8386 /* No longer locked, retry */ 8387 goto retry; 8388 } 8389 *flock = flk; 8390 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8391 F_GETLK, &flk); 8392 } 8393 } 8394 8395 return (error); 8396 } 8397 8398 /*ARGSUSED*/ 8399 static nfsstat4 8400 rfs4_do_lock(rfs4_lo_state_t *lp, nfs_lock_type4 locktype, 8401 seqid4 seqid, offset4 offset, 8402 length4 length, cred_t *cred, nfs_resop4 *resop) 8403 { 8404 nfsstat4 status; 8405 rfs4_lockowner_t *lo = lp->locker; 8406 rfs4_state_t *sp = lp->state; 8407 struct flock64 flock; 8408 int16_t ltype; 8409 int flag; 8410 int error; 8411 sysid_t sysid; 8412 LOCK4res *lres; 8413 8414 if (rfs4_lease_expired(lo->client)) { 8415 return (NFS4ERR_EXPIRED); 8416 } 8417 8418 if ((status = rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 8419 return (status); 8420 8421 /* Check for zero length. To lock to end of file use all ones for V4 */ 8422 if (length == 0) 8423 return (NFS4ERR_INVAL); 8424 else if (length == (length4)(~0)) 8425 length = 0; /* Posix to end of file */ 8426 8427 retry: 8428 rfs4_dbe_lock(sp->dbe); 8429 8430 8431 if (resop->resop != OP_LOCKU) { 8432 switch (locktype) { 8433 case READ_LT: 8434 case READW_LT: 8435 if ((sp->share_access 8436 & OPEN4_SHARE_ACCESS_READ) == 0) { 8437 rfs4_dbe_unlock(sp->dbe); 8438 8439 return (NFS4ERR_OPENMODE); 8440 } 8441 ltype = F_RDLCK; 8442 break; 8443 case WRITE_LT: 8444 case WRITEW_LT: 8445 if ((sp->share_access 8446 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8447 rfs4_dbe_unlock(sp->dbe); 8448 8449 return (NFS4ERR_OPENMODE); 8450 } 8451 ltype = F_WRLCK; 8452 break; 8453 } 8454 } else 8455 ltype = F_UNLCK; 8456 8457 flock.l_type = ltype; 8458 flock.l_whence = 0; /* SEEK_SET */ 8459 flock.l_start = offset; 8460 flock.l_len = length; 8461 flock.l_sysid = sysid; 8462 flock.l_pid = lp->locker->pid; 8463 8464 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8465 if (flock.l_len < 0 || flock.l_start < 0) { 8466 rfs4_dbe_unlock(sp->dbe); 8467 return (NFS4ERR_INVAL); 8468 } 8469 8470 /* 8471 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8472 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8473 */ 8474 flag = (int)sp->share_access | F_REMOTELOCK; 8475 8476 error = setlock(sp->finfo->vp, &flock, flag, cred); 8477 if (error == 0) { 8478 rfs4_dbe_lock(lp->dbe); 8479 next_stateid(&lp->lockid); 8480 rfs4_dbe_unlock(lp->dbe); 8481 } 8482 8483 rfs4_dbe_unlock(sp->dbe); 8484 8485 /* 8486 * N.B. We map error values to nfsv4 errors. This is differrent 8487 * than puterrno4 routine. 8488 */ 8489 switch (error) { 8490 case 0: 8491 status = NFS4_OK; 8492 break; 8493 case EAGAIN: 8494 case EACCES: /* Old value */ 8495 /* Can only get here if op is OP_LOCK */ 8496 ASSERT(resop->resop == OP_LOCK); 8497 lres = &resop->nfs_resop4_u.oplock; 8498 status = NFS4ERR_DENIED; 8499 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8500 == NFS4ERR_EXPIRED) 8501 goto retry; 8502 break; 8503 case ENOLCK: 8504 status = NFS4ERR_DELAY; 8505 break; 8506 case EOVERFLOW: 8507 status = NFS4ERR_INVAL; 8508 break; 8509 case EINVAL: 8510 status = NFS4ERR_NOTSUPP; 8511 break; 8512 default: 8513 status = NFS4ERR_SERVERFAULT; 8514 break; 8515 } 8516 8517 return (status); 8518 } 8519 8520 /*ARGSUSED*/ 8521 void 8522 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8523 struct svc_req *req, struct compound_state *cs) 8524 { 8525 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8526 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8527 nfsstat4 status; 8528 stateid4 *stateid; 8529 rfs4_lockowner_t *lo; 8530 rfs4_client_t *cp; 8531 rfs4_state_t *sp = NULL; 8532 rfs4_lo_state_t *lsp = NULL; 8533 bool_t ls_sw_held = FALSE; 8534 bool_t create = TRUE; 8535 bool_t lcreate = TRUE; 8536 bool_t dup_lock = FALSE; 8537 int rc; 8538 8539 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8540 LOCK4args *, args); 8541 8542 if (cs->vp == NULL) { 8543 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8544 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8545 cs, LOCK4res *, resp); 8546 return; 8547 } 8548 8549 if (args->locker.new_lock_owner) { 8550 /* Create a new lockowner for this instance */ 8551 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8552 8553 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8554 8555 stateid = &olo->open_stateid; 8556 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8557 if (status != NFS4_OK) { 8558 NFS4_DEBUG(rfs4_debug, 8559 (CE_NOTE, "Get state failed in lock %d", status)); 8560 *cs->statusp = resp->status = status; 8561 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8562 cs, LOCK4res *, resp); 8563 return; 8564 } 8565 8566 /* Ensure specified filehandle matches */ 8567 if (cs->vp != sp->finfo->vp) { 8568 rfs4_state_rele(sp); 8569 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8570 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8571 cs, LOCK4res *, resp); 8572 return; 8573 } 8574 8575 /* hold off other access to open_owner while we tinker */ 8576 rfs4_sw_enter(&sp->owner->oo_sw); 8577 8578 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8579 case NFS4_CHECK_STATEID_OLD: 8580 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8581 goto end; 8582 case NFS4_CHECK_STATEID_BAD: 8583 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8584 goto end; 8585 case NFS4_CHECK_STATEID_EXPIRED: 8586 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8587 goto end; 8588 case NFS4_CHECK_STATEID_UNCONFIRMED: 8589 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8590 goto end; 8591 case NFS4_CHECK_STATEID_CLOSED: 8592 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8593 goto end; 8594 case NFS4_CHECK_STATEID_OKAY: 8595 case NFS4_CHECK_STATEID_REPLAY: 8596 switch (rfs4_check_olo_seqid(olo->open_seqid, 8597 sp->owner, resop)) { 8598 case NFS4_CHKSEQ_OKAY: 8599 if (rc == NFS4_CHECK_STATEID_OKAY) 8600 break; 8601 /* 8602 * This is replayed stateid; if seqid 8603 * matches next expected, then client 8604 * is using wrong seqid. 8605 */ 8606 /* FALLTHROUGH */ 8607 case NFS4_CHKSEQ_BAD: 8608 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8609 goto end; 8610 case NFS4_CHKSEQ_REPLAY: 8611 /* This is a duplicate LOCK request */ 8612 dup_lock = TRUE; 8613 8614 /* 8615 * For a duplicate we do not want to 8616 * create a new lockowner as it should 8617 * already exist. 8618 * Turn off the lockowner create flag. 8619 */ 8620 lcreate = FALSE; 8621 } 8622 break; 8623 } 8624 8625 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8626 if (lo == NULL) { 8627 NFS4_DEBUG(rfs4_debug, 8628 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8629 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8630 goto end; 8631 } 8632 8633 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8634 if (lsp == NULL) { 8635 rfs4_update_lease(sp->owner->client); 8636 /* 8637 * Only update theh open_seqid if this is not 8638 * a duplicate request 8639 */ 8640 if (dup_lock == FALSE) { 8641 rfs4_update_open_sequence(sp->owner); 8642 } 8643 8644 NFS4_DEBUG(rfs4_debug, 8645 (CE_NOTE, "rfs4_op_lock: no state")); 8646 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8647 rfs4_update_open_resp(sp->owner, resop, NULL); 8648 rfs4_lockowner_rele(lo); 8649 goto end; 8650 } 8651 8652 /* 8653 * This is the new_lock_owner branch and the client is 8654 * supposed to be associating a new lock_owner with 8655 * the open file at this point. If we find that a 8656 * lock_owner/state association already exists and a 8657 * successful LOCK request was returned to the client, 8658 * an error is returned to the client since this is 8659 * not appropriate. The client should be using the 8660 * existing lock_owner branch. 8661 */ 8662 if (dup_lock == FALSE && create == FALSE) { 8663 if (lsp->lock_completed == TRUE) { 8664 *cs->statusp = 8665 resp->status = NFS4ERR_BAD_SEQID; 8666 rfs4_lockowner_rele(lo); 8667 goto end; 8668 } 8669 } 8670 8671 rfs4_update_lease(sp->owner->client); 8672 8673 /* 8674 * Only update theh open_seqid if this is not 8675 * a duplicate request 8676 */ 8677 if (dup_lock == FALSE) { 8678 rfs4_update_open_sequence(sp->owner); 8679 } 8680 8681 /* 8682 * If this is a duplicate lock request, just copy the 8683 * previously saved reply and return. 8684 */ 8685 if (dup_lock == TRUE) { 8686 /* verify that lock_seqid's match */ 8687 if (lsp->seqid != olo->lock_seqid) { 8688 NFS4_DEBUG(rfs4_debug, 8689 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8690 "lsp->seqid=%d old->seqid=%d", 8691 lsp->seqid, olo->lock_seqid)); 8692 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8693 } else { 8694 rfs4_copy_reply(resop, lsp->reply); 8695 /* 8696 * Make sure to copy the just 8697 * retrieved reply status into the 8698 * overall compound status 8699 */ 8700 *cs->statusp = resp->status; 8701 } 8702 rfs4_lockowner_rele(lo); 8703 goto end; 8704 } 8705 8706 rfs4_dbe_lock(lsp->dbe); 8707 8708 /* Make sure to update the lock sequence id */ 8709 lsp->seqid = olo->lock_seqid; 8710 8711 NFS4_DEBUG(rfs4_debug, 8712 (CE_NOTE, "Lock seqid established as %d", lsp->seqid)); 8713 8714 /* 8715 * This is used to signify the newly created lockowner 8716 * stateid and its sequence number. The checks for 8717 * sequence number and increment don't occur on the 8718 * very first lock request for a lockowner. 8719 */ 8720 lsp->skip_seqid_check = TRUE; 8721 8722 /* hold off other access to lsp while we tinker */ 8723 rfs4_sw_enter(&lsp->ls_sw); 8724 ls_sw_held = TRUE; 8725 8726 rfs4_dbe_unlock(lsp->dbe); 8727 8728 rfs4_lockowner_rele(lo); 8729 } else { 8730 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8731 /* get lsp and hold the lock on the underlying file struct */ 8732 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8733 != NFS4_OK) { 8734 *cs->statusp = resp->status = status; 8735 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8736 cs, LOCK4res *, resp); 8737 return; 8738 } 8739 create = FALSE; /* We didn't create lsp */ 8740 8741 /* Ensure specified filehandle matches */ 8742 if (cs->vp != lsp->state->finfo->vp) { 8743 rfs4_lo_state_rele(lsp, TRUE); 8744 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8745 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8746 cs, LOCK4res *, resp); 8747 return; 8748 } 8749 8750 /* hold off other access to lsp while we tinker */ 8751 rfs4_sw_enter(&lsp->ls_sw); 8752 ls_sw_held = TRUE; 8753 8754 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8755 /* 8756 * The stateid looks like it was okay (expected to be 8757 * the next one) 8758 */ 8759 case NFS4_CHECK_STATEID_OKAY: 8760 /* 8761 * The sequence id is now checked. Determine 8762 * if this is a replay or if it is in the 8763 * expected (next) sequence. In the case of a 8764 * replay, there are two replay conditions 8765 * that may occur. The first is the normal 8766 * condition where a LOCK is done with a 8767 * NFS4_OK response and the stateid is 8768 * updated. That case is handled below when 8769 * the stateid is identified as a REPLAY. The 8770 * second is the case where an error is 8771 * returned, like NFS4ERR_DENIED, and the 8772 * sequence number is updated but the stateid 8773 * is not updated. This second case is dealt 8774 * with here. So it may seem odd that the 8775 * stateid is okay but the sequence id is a 8776 * replay but it is okay. 8777 */ 8778 switch (rfs4_check_lock_seqid( 8779 args->locker.locker4_u.lock_owner.lock_seqid, 8780 lsp, resop)) { 8781 case NFS4_CHKSEQ_REPLAY: 8782 if (resp->status != NFS4_OK) { 8783 /* 8784 * Here is our replay and need 8785 * to verify that the last 8786 * response was an error. 8787 */ 8788 *cs->statusp = resp->status; 8789 goto end; 8790 } 8791 /* 8792 * This is done since the sequence id 8793 * looked like a replay but it didn't 8794 * pass our check so a BAD_SEQID is 8795 * returned as a result. 8796 */ 8797 /*FALLTHROUGH*/ 8798 case NFS4_CHKSEQ_BAD: 8799 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8800 goto end; 8801 case NFS4_CHKSEQ_OKAY: 8802 /* Everything looks okay move ahead */ 8803 break; 8804 } 8805 break; 8806 case NFS4_CHECK_STATEID_OLD: 8807 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8808 goto end; 8809 case NFS4_CHECK_STATEID_BAD: 8810 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8811 goto end; 8812 case NFS4_CHECK_STATEID_EXPIRED: 8813 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8814 goto end; 8815 case NFS4_CHECK_STATEID_CLOSED: 8816 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8817 goto end; 8818 case NFS4_CHECK_STATEID_REPLAY: 8819 switch (rfs4_check_lock_seqid( 8820 args->locker.locker4_u.lock_owner.lock_seqid, 8821 lsp, resop)) { 8822 case NFS4_CHKSEQ_OKAY: 8823 /* 8824 * This is a replayed stateid; if 8825 * seqid matches the next expected, 8826 * then client is using wrong seqid. 8827 */ 8828 case NFS4_CHKSEQ_BAD: 8829 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8830 goto end; 8831 case NFS4_CHKSEQ_REPLAY: 8832 rfs4_update_lease(lsp->locker->client); 8833 *cs->statusp = status = resp->status; 8834 goto end; 8835 } 8836 break; 8837 default: 8838 ASSERT(FALSE); 8839 break; 8840 } 8841 8842 rfs4_update_lock_sequence(lsp); 8843 rfs4_update_lease(lsp->locker->client); 8844 } 8845 8846 /* 8847 * NFS4 only allows locking on regular files, so 8848 * verify type of object. 8849 */ 8850 if (cs->vp->v_type != VREG) { 8851 if (cs->vp->v_type == VDIR) 8852 status = NFS4ERR_ISDIR; 8853 else 8854 status = NFS4ERR_INVAL; 8855 goto out; 8856 } 8857 8858 cp = lsp->state->owner->client; 8859 8860 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 8861 status = NFS4ERR_GRACE; 8862 goto out; 8863 } 8864 8865 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->can_reclaim) { 8866 status = NFS4ERR_NO_GRACE; 8867 goto out; 8868 } 8869 8870 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 8871 status = NFS4ERR_NO_GRACE; 8872 goto out; 8873 } 8874 8875 if (lsp->state->finfo->dinfo->dtype == OPEN_DELEGATE_WRITE) 8876 cs->deleg = TRUE; 8877 8878 status = rfs4_do_lock(lsp, args->locktype, 8879 args->locker.locker4_u.lock_owner.lock_seqid, 8880 args->offset, args->length, cs->cr, resop); 8881 8882 out: 8883 lsp->skip_seqid_check = FALSE; 8884 8885 *cs->statusp = resp->status = status; 8886 8887 if (status == NFS4_OK) { 8888 resp->LOCK4res_u.lock_stateid = lsp->lockid.stateid; 8889 lsp->lock_completed = TRUE; 8890 } 8891 /* 8892 * Only update the "OPEN" response here if this was a new 8893 * lock_owner 8894 */ 8895 if (sp) 8896 rfs4_update_open_resp(sp->owner, resop, NULL); 8897 8898 rfs4_update_lock_resp(lsp, resop); 8899 8900 end: 8901 if (lsp) { 8902 if (ls_sw_held) 8903 rfs4_sw_exit(&lsp->ls_sw); 8904 /* 8905 * If an sp obtained, then the lsp does not represent 8906 * a lock on the file struct. 8907 */ 8908 if (sp != NULL) 8909 rfs4_lo_state_rele(lsp, FALSE); 8910 else 8911 rfs4_lo_state_rele(lsp, TRUE); 8912 } 8913 if (sp) { 8914 rfs4_sw_exit(&sp->owner->oo_sw); 8915 rfs4_state_rele(sp); 8916 } 8917 8918 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 8919 LOCK4res *, resp); 8920 } 8921 8922 /* free function for LOCK/LOCKT */ 8923 static void 8924 lock_denied_free(nfs_resop4 *resop) 8925 { 8926 LOCK4denied *dp = NULL; 8927 8928 switch (resop->resop) { 8929 case OP_LOCK: 8930 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 8931 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 8932 break; 8933 case OP_LOCKT: 8934 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 8935 dp = &resop->nfs_resop4_u.oplockt.denied; 8936 break; 8937 default: 8938 break; 8939 } 8940 8941 if (dp) 8942 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 8943 } 8944 8945 /*ARGSUSED*/ 8946 void 8947 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 8948 struct svc_req *req, struct compound_state *cs) 8949 { 8950 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 8951 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 8952 nfsstat4 status; 8953 stateid4 *stateid = &args->lock_stateid; 8954 rfs4_lo_state_t *lsp; 8955 8956 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 8957 LOCKU4args *, args); 8958 8959 if (cs->vp == NULL) { 8960 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8961 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8962 LOCKU4res *, resp); 8963 return; 8964 } 8965 8966 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 8967 *cs->statusp = resp->status = status; 8968 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8969 LOCKU4res *, resp); 8970 return; 8971 } 8972 8973 /* Ensure specified filehandle matches */ 8974 if (cs->vp != lsp->state->finfo->vp) { 8975 rfs4_lo_state_rele(lsp, TRUE); 8976 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8977 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8978 LOCKU4res *, resp); 8979 return; 8980 } 8981 8982 /* hold off other access to lsp while we tinker */ 8983 rfs4_sw_enter(&lsp->ls_sw); 8984 8985 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8986 case NFS4_CHECK_STATEID_OKAY: 8987 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 8988 != NFS4_CHKSEQ_OKAY) { 8989 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8990 goto end; 8991 } 8992 break; 8993 case NFS4_CHECK_STATEID_OLD: 8994 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8995 goto end; 8996 case NFS4_CHECK_STATEID_BAD: 8997 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8998 goto end; 8999 case NFS4_CHECK_STATEID_EXPIRED: 9000 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9001 goto end; 9002 case NFS4_CHECK_STATEID_CLOSED: 9003 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9004 goto end; 9005 case NFS4_CHECK_STATEID_REPLAY: 9006 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9007 case NFS4_CHKSEQ_OKAY: 9008 /* 9009 * This is a replayed stateid; if 9010 * seqid matches the next expected, 9011 * then client is using wrong seqid. 9012 */ 9013 case NFS4_CHKSEQ_BAD: 9014 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9015 goto end; 9016 case NFS4_CHKSEQ_REPLAY: 9017 rfs4_update_lease(lsp->locker->client); 9018 *cs->statusp = status = resp->status; 9019 goto end; 9020 } 9021 break; 9022 default: 9023 ASSERT(FALSE); 9024 break; 9025 } 9026 9027 rfs4_update_lock_sequence(lsp); 9028 rfs4_update_lease(lsp->locker->client); 9029 9030 /* 9031 * NFS4 only allows locking on regular files, so 9032 * verify type of object. 9033 */ 9034 if (cs->vp->v_type != VREG) { 9035 if (cs->vp->v_type == VDIR) 9036 status = NFS4ERR_ISDIR; 9037 else 9038 status = NFS4ERR_INVAL; 9039 goto out; 9040 } 9041 9042 if (rfs4_clnt_in_grace(lsp->state->owner->client)) { 9043 status = NFS4ERR_GRACE; 9044 goto out; 9045 } 9046 9047 status = rfs4_do_lock(lsp, args->locktype, 9048 args->seqid, args->offset, args->length, cs->cr, resop); 9049 9050 out: 9051 *cs->statusp = resp->status = status; 9052 9053 if (status == NFS4_OK) 9054 resp->lock_stateid = lsp->lockid.stateid; 9055 9056 rfs4_update_lock_resp(lsp, resop); 9057 9058 end: 9059 rfs4_sw_exit(&lsp->ls_sw); 9060 rfs4_lo_state_rele(lsp, TRUE); 9061 9062 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9063 LOCKU4res *, resp); 9064 } 9065 9066 /* 9067 * LOCKT is a best effort routine, the client can not be guaranteed that 9068 * the status return is still in effect by the time the reply is received. 9069 * They are numerous race conditions in this routine, but we are not required 9070 * and can not be accurate. 9071 */ 9072 /*ARGSUSED*/ 9073 void 9074 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9075 struct svc_req *req, struct compound_state *cs) 9076 { 9077 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9078 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9079 rfs4_lockowner_t *lo; 9080 rfs4_client_t *cp; 9081 bool_t create = FALSE; 9082 struct flock64 flk; 9083 int error; 9084 int flag = FREAD | FWRITE; 9085 int ltype; 9086 length4 posix_length; 9087 sysid_t sysid; 9088 pid_t pid; 9089 9090 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9091 LOCKT4args *, args); 9092 9093 if (cs->vp == NULL) { 9094 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9095 goto out; 9096 } 9097 9098 /* 9099 * NFS4 only allows locking on regular files, so 9100 * verify type of object. 9101 */ 9102 if (cs->vp->v_type != VREG) { 9103 if (cs->vp->v_type == VDIR) 9104 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9105 else 9106 *cs->statusp = resp->status = NFS4ERR_INVAL; 9107 goto out; 9108 } 9109 9110 /* 9111 * Check out the clientid to ensure the server knows about it 9112 * so that we correctly inform the client of a server reboot. 9113 */ 9114 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9115 == NULL) { 9116 *cs->statusp = resp->status = 9117 rfs4_check_clientid(&args->owner.clientid, 0); 9118 goto out; 9119 } 9120 if (rfs4_lease_expired(cp)) { 9121 rfs4_client_close(cp); 9122 /* 9123 * Protocol doesn't allow returning NFS4ERR_STALE as 9124 * other operations do on this check so STALE_CLIENTID 9125 * is returned instead 9126 */ 9127 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9128 goto out; 9129 } 9130 9131 if (rfs4_clnt_in_grace(cp) && !(cp->can_reclaim)) { 9132 *cs->statusp = resp->status = NFS4ERR_GRACE; 9133 rfs4_client_rele(cp); 9134 goto out; 9135 } 9136 rfs4_client_rele(cp); 9137 9138 resp->status = NFS4_OK; 9139 9140 switch (args->locktype) { 9141 case READ_LT: 9142 case READW_LT: 9143 ltype = F_RDLCK; 9144 break; 9145 case WRITE_LT: 9146 case WRITEW_LT: 9147 ltype = F_WRLCK; 9148 break; 9149 } 9150 9151 posix_length = args->length; 9152 /* Check for zero length. To lock to end of file use all ones for V4 */ 9153 if (posix_length == 0) { 9154 *cs->statusp = resp->status = NFS4ERR_INVAL; 9155 goto out; 9156 } else if (posix_length == (length4)(~0)) { 9157 posix_length = 0; /* Posix to end of file */ 9158 } 9159 9160 /* Find or create a lockowner */ 9161 lo = rfs4_findlockowner(&args->owner, &create); 9162 9163 if (lo) { 9164 pid = lo->pid; 9165 if ((resp->status = 9166 rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 9167 goto err; 9168 } else { 9169 pid = 0; 9170 sysid = lockt_sysid; 9171 } 9172 retry: 9173 flk.l_type = ltype; 9174 flk.l_whence = 0; /* SEEK_SET */ 9175 flk.l_start = args->offset; 9176 flk.l_len = posix_length; 9177 flk.l_sysid = sysid; 9178 flk.l_pid = pid; 9179 flag |= F_REMOTELOCK; 9180 9181 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9182 9183 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9184 if (flk.l_len < 0 || flk.l_start < 0) { 9185 resp->status = NFS4ERR_INVAL; 9186 goto err; 9187 } 9188 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9189 NULL, cs->cr, NULL); 9190 9191 /* 9192 * N.B. We map error values to nfsv4 errors. This is differrent 9193 * than puterrno4 routine. 9194 */ 9195 switch (error) { 9196 case 0: 9197 if (flk.l_type == F_UNLCK) 9198 resp->status = NFS4_OK; 9199 else { 9200 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9201 goto retry; 9202 resp->status = NFS4ERR_DENIED; 9203 } 9204 break; 9205 case EOVERFLOW: 9206 resp->status = NFS4ERR_INVAL; 9207 break; 9208 case EINVAL: 9209 resp->status = NFS4ERR_NOTSUPP; 9210 break; 9211 default: 9212 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9213 error); 9214 resp->status = NFS4ERR_SERVERFAULT; 9215 break; 9216 } 9217 9218 err: 9219 if (lo) 9220 rfs4_lockowner_rele(lo); 9221 *cs->statusp = resp->status; 9222 out: 9223 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9224 LOCKT4res *, resp); 9225 } 9226 9227 static int 9228 vop_shrlock(vnode_t *vp, int cmd, struct shrlock *sp, int fflags) 9229 { 9230 int err; 9231 9232 if (cmd == F_UNSHARE && sp->s_deny == 0 && sp->s_access == 0) 9233 return (0); 9234 9235 err = VOP_SHRLOCK(vp, cmd, sp, fflags, CRED(), NULL); 9236 9237 NFS4_DEBUG(rfs4_shrlock_debug, 9238 (CE_NOTE, "rfs4_shrlock %s vp=%p acc=%d dny=%d sysid=%d " 9239 "pid=%d err=%d\n", cmd == F_UNSHARE ? "UNSHR" : "SHARE", 9240 (void *) vp, sp->s_access, sp->s_deny, sp->s_sysid, sp->s_pid, 9241 err)); 9242 9243 return (err); 9244 } 9245 9246 static int 9247 rfs4_shrlock(rfs4_state_t *sp, int cmd) 9248 { 9249 struct shrlock shr; 9250 struct shr_locowner shr_loco; 9251 int fflags; 9252 9253 fflags = shr.s_access = shr.s_deny = 0; 9254 9255 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 9256 fflags |= FREAD; 9257 shr.s_access |= F_RDACC; 9258 } 9259 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 9260 fflags |= FWRITE; 9261 shr.s_access |= F_WRACC; 9262 } 9263 if (sp->share_deny & OPEN4_SHARE_DENY_READ) 9264 shr.s_deny |= F_RDDNY; 9265 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) 9266 shr.s_deny |= F_WRDNY; 9267 9268 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 9269 shr.s_sysid = sp->owner->client->sysidt; 9270 shr_loco.sl_pid = shr.s_pid; 9271 shr_loco.sl_id = shr.s_sysid; 9272 shr.s_owner = (caddr_t)&shr_loco; 9273 shr.s_own_len = sizeof (shr_loco); 9274 return (vop_shrlock(sp->finfo->vp, cmd, &shr, fflags)); 9275 } 9276 9277 static int 9278 rfs4_share(rfs4_state_t *sp) 9279 { 9280 int cmd; 9281 cmd = nbl_need_check(sp->finfo->vp) ? F_SHARE_NBMAND : F_SHARE; 9282 return (rfs4_shrlock(sp, cmd)); 9283 } 9284 9285 void 9286 rfs4_unshare(rfs4_state_t *sp) 9287 { 9288 (void) rfs4_shrlock(sp, F_UNSHARE); 9289 } 9290 9291 static int 9292 rdma_setup_read_data4(READ4args * args, READ4res * rok) 9293 { 9294 struct clist *wcl; 9295 int data_len, avail_len, num; 9296 count4 count = rok->data_len; 9297 9298 data_len = num = avail_len = 0; 9299 9300 wcl = args->wlist; 9301 while (wcl != NULL) { 9302 if (wcl->c_dmemhandle.mrc_rmr == 0) 9303 break; 9304 9305 avail_len += wcl->c_len; 9306 if (wcl->c_len < count) { 9307 data_len += wcl->c_len; 9308 } else { 9309 /* Can make the rest chunks all 0-len */ 9310 data_len += count; 9311 wcl->c_len = count; 9312 } 9313 count -= wcl->c_len; 9314 num++; 9315 wcl = wcl->c_next; 9316 } 9317 9318 /* 9319 * MUST fail if there are still more data 9320 */ 9321 if (count > 0) { 9322 DTRACE_PROBE2(nfss__e__read4_wlist_fail, 9323 int, data_len, int, count); 9324 return (FALSE); 9325 } 9326 wcl = args->wlist; 9327 rok->data_len = data_len; 9328 rok->wlist_len = data_len; 9329 rok->wlist = wcl; 9330 9331 return (TRUE); 9332 } 9333