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