1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 28 * All Rights Reserved 29 */ 30 31 #include <sys/param.h> 32 #include <sys/types.h> 33 #include <sys/systm.h> 34 #include <sys/cred.h> 35 #include <sys/buf.h> 36 #include <sys/vfs.h> 37 #include <sys/vfs_opreg.h> 38 #include <sys/vnode.h> 39 #include <sys/uio.h> 40 #include <sys/errno.h> 41 #include <sys/sysmacros.h> 42 #include <sys/statvfs.h> 43 #include <sys/kmem.h> 44 #include <sys/dirent.h> 45 #include <sys/cmn_err.h> 46 #include <sys/debug.h> 47 #include <sys/systeminfo.h> 48 #include <sys/flock.h> 49 #include <sys/pathname.h> 50 #include <sys/nbmlock.h> 51 #include <sys/share.h> 52 #include <sys/atomic.h> 53 #include <sys/policy.h> 54 #include <sys/fem.h> 55 #include <sys/sdt.h> 56 #include <sys/ddi.h> 57 #include <sys/zone.h> 58 59 #include <rpc/types.h> 60 #include <rpc/auth.h> 61 #include <rpc/rpcsec_gss.h> 62 #include <rpc/svc.h> 63 64 #include <nfs/nfs.h> 65 #include <nfs/export.h> 66 #include <nfs/nfs_cmd.h> 67 #include <nfs/lm.h> 68 #include <nfs/nfs4.h> 69 70 #include <sys/strsubr.h> 71 #include <sys/strsun.h> 72 73 #include <inet/common.h> 74 #include <inet/ip.h> 75 #include <inet/ip6.h> 76 77 #include <sys/tsol/label.h> 78 #include <sys/tsol/tndb.h> 79 80 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 81 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 82 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 83 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 84 extern struct svc_ops rdma_svc_ops; 85 /* End of Tunables */ 86 87 static int rdma_setup_read_data4(READ4args *, READ4res *); 88 89 /* 90 * Used to bump the stateid4.seqid value and show changes in the stateid 91 */ 92 #define next_stateid(sp) (++(sp)->bits.chgseq) 93 94 /* 95 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 96 * This is used to return NFS4ERR_TOOSMALL when clients specify 97 * maxcount that isn't large enough to hold the smallest possible 98 * XDR encoded dirent. 99 * 100 * sizeof cookie (8 bytes) + 101 * sizeof name_len (4 bytes) + 102 * sizeof smallest (padded) name (4 bytes) + 103 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 104 * sizeof attrlist4_len (4 bytes) + 105 * sizeof next boolean (4 bytes) 106 * 107 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 108 * the smallest possible entry4 (assumes no attrs requested). 109 * sizeof nfsstat4 (4 bytes) + 110 * sizeof verifier4 (8 bytes) + 111 * sizeof entry4list bool (4 bytes) + 112 * sizeof entry4 (36 bytes) + 113 * sizeof eof bool (4 bytes) 114 * 115 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 116 * VOP_READDIR. Its value is the size of the maximum possible dirent 117 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 118 * required for a given name length. MAXNAMELEN is the maximum 119 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 120 * macros are to allow for . and .. entries -- just a minor tweak to try 121 * and guarantee that buffer we give to VOP_READDIR will be large enough 122 * to hold ., .., and the largest possible solaris dirent64. 123 */ 124 #define RFS4_MINLEN_ENTRY4 36 125 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 126 #define RFS4_MINLEN_RDDIR_BUF \ 127 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 128 129 /* 130 * It would be better to pad to 4 bytes since that's what XDR would do, 131 * but the dirents UFS gives us are already padded to 8, so just take 132 * what we're given. Dircount is only a hint anyway. Currently the 133 * solaris kernel is ASCII only, so there's no point in calling the 134 * UTF8 functions. 135 * 136 * dirent64: named padded to provide 8 byte struct alignment 137 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 138 * 139 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 140 * 141 */ 142 #define DIRENT64_TO_DIRCOUNT(dp) \ 143 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 144 145 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 146 147 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 148 149 u_longlong_t nfs4_srv_caller_id; 150 uint_t nfs4_srv_vkey = 0; 151 152 verifier4 Write4verf; 153 verifier4 Readdir4verf; 154 155 void rfs4_init_compound_state(struct compound_state *); 156 157 static void nullfree(caddr_t); 158 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 159 struct compound_state *); 160 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 161 struct compound_state *); 162 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 163 struct compound_state *); 164 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 165 struct compound_state *); 166 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 167 struct compound_state *); 168 static void rfs4_op_create_free(nfs_resop4 *resop); 169 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 170 struct svc_req *, struct compound_state *); 171 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 172 struct svc_req *, struct compound_state *); 173 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 174 struct compound_state *); 175 static void rfs4_op_getattr_free(nfs_resop4 *); 176 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 177 struct compound_state *); 178 static void rfs4_op_getfh_free(nfs_resop4 *); 179 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 180 struct compound_state *); 181 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 182 struct compound_state *); 183 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 184 struct compound_state *); 185 static void lock_denied_free(nfs_resop4 *); 186 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 187 struct compound_state *); 188 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 189 struct compound_state *); 190 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 191 struct compound_state *); 192 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 193 struct compound_state *); 194 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 195 struct svc_req *req, struct compound_state *cs); 196 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 197 struct compound_state *); 198 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 199 struct compound_state *); 200 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 201 struct svc_req *, struct compound_state *); 202 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 203 struct svc_req *, struct compound_state *); 204 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 205 struct compound_state *); 206 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 207 struct compound_state *); 208 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 209 struct compound_state *); 210 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 211 struct compound_state *); 212 static void rfs4_op_read_free(nfs_resop4 *); 213 static void rfs4_op_readdir_free(nfs_resop4 *resop); 214 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 215 struct compound_state *); 216 static void rfs4_op_readlink_free(nfs_resop4 *); 217 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 218 struct svc_req *, struct compound_state *); 219 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 220 struct compound_state *); 221 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 222 struct compound_state *); 223 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 224 struct compound_state *); 225 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 226 struct compound_state *); 227 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 228 struct compound_state *); 229 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 230 struct compound_state *); 231 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 232 struct compound_state *); 233 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 234 struct compound_state *); 235 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 236 struct svc_req *, struct compound_state *); 237 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 238 struct svc_req *req, struct compound_state *); 239 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 240 struct compound_state *); 241 static void rfs4_op_secinfo_free(nfs_resop4 *); 242 243 static nfsstat4 check_open_access(uint32_t, 244 struct compound_state *, struct svc_req *); 245 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 246 static int vop_shrlock(vnode_t *, int, struct shrlock *, int); 247 static int rfs4_shrlock(rfs4_state_t *, int); 248 static int rfs4_share(rfs4_state_t *); 249 void rfs4_ss_clid(rfs4_client_t *, struct svc_req *); 250 251 /* 252 * translation table for attrs 253 */ 254 struct nfs4_ntov_table { 255 union nfs4_attr_u *na; 256 uint8_t amap[NFS4_MAXNUM_ATTRS]; 257 int attrcnt; 258 bool_t vfsstat; 259 }; 260 261 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 262 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 263 struct nfs4_svgetit_arg *sargp); 264 265 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 266 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 267 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 268 269 fem_t *deleg_rdops; 270 fem_t *deleg_wrops; 271 272 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 273 kmutex_t rfs4_servinst_lock; /* protects linked list */ 274 int rfs4_seen_first_compound; /* set first time we see one */ 275 276 /* 277 * NFS4 op dispatch table 278 */ 279 280 struct rfsv4disp { 281 void (*dis_proc)(); /* proc to call */ 282 void (*dis_resfree)(); /* frees space allocated by proc */ 283 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 284 }; 285 286 static struct rfsv4disp rfsv4disptab[] = { 287 /* 288 * NFS VERSION 4 289 */ 290 291 /* RFS_NULL = 0 */ 292 {rfs4_op_illegal, nullfree, 0}, 293 294 /* UNUSED = 1 */ 295 {rfs4_op_illegal, nullfree, 0}, 296 297 /* UNUSED = 2 */ 298 {rfs4_op_illegal, nullfree, 0}, 299 300 /* OP_ACCESS = 3 */ 301 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 302 303 /* OP_CLOSE = 4 */ 304 {rfs4_op_close, nullfree, 0}, 305 306 /* OP_COMMIT = 5 */ 307 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 308 309 /* OP_CREATE = 6 */ 310 {rfs4_op_create, nullfree, 0}, 311 312 /* OP_DELEGPURGE = 7 */ 313 {rfs4_op_delegpurge, nullfree, 0}, 314 315 /* OP_DELEGRETURN = 8 */ 316 {rfs4_op_delegreturn, nullfree, 0}, 317 318 /* OP_GETATTR = 9 */ 319 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 320 321 /* OP_GETFH = 10 */ 322 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 323 324 /* OP_LINK = 11 */ 325 {rfs4_op_link, nullfree, 0}, 326 327 /* OP_LOCK = 12 */ 328 {rfs4_op_lock, lock_denied_free, 0}, 329 330 /* OP_LOCKT = 13 */ 331 {rfs4_op_lockt, lock_denied_free, 0}, 332 333 /* OP_LOCKU = 14 */ 334 {rfs4_op_locku, nullfree, 0}, 335 336 /* OP_LOOKUP = 15 */ 337 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 338 339 /* OP_LOOKUPP = 16 */ 340 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 341 342 /* OP_NVERIFY = 17 */ 343 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 344 345 /* OP_OPEN = 18 */ 346 {rfs4_op_open, rfs4_free_reply, 0}, 347 348 /* OP_OPENATTR = 19 */ 349 {rfs4_op_openattr, nullfree, 0}, 350 351 /* OP_OPEN_CONFIRM = 20 */ 352 {rfs4_op_open_confirm, nullfree, 0}, 353 354 /* OP_OPEN_DOWNGRADE = 21 */ 355 {rfs4_op_open_downgrade, nullfree, 0}, 356 357 /* OP_OPEN_PUTFH = 22 */ 358 {rfs4_op_putfh, nullfree, RPC_ALL}, 359 360 /* OP_PUTPUBFH = 23 */ 361 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 362 363 /* OP_PUTROOTFH = 24 */ 364 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 365 366 /* OP_READ = 25 */ 367 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 368 369 /* OP_READDIR = 26 */ 370 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 371 372 /* OP_READLINK = 27 */ 373 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 374 375 /* OP_REMOVE = 28 */ 376 {rfs4_op_remove, nullfree, 0}, 377 378 /* OP_RENAME = 29 */ 379 {rfs4_op_rename, nullfree, 0}, 380 381 /* OP_RENEW = 30 */ 382 {rfs4_op_renew, nullfree, 0}, 383 384 /* OP_RESTOREFH = 31 */ 385 {rfs4_op_restorefh, nullfree, RPC_ALL}, 386 387 /* OP_SAVEFH = 32 */ 388 {rfs4_op_savefh, nullfree, RPC_ALL}, 389 390 /* OP_SECINFO = 33 */ 391 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 392 393 /* OP_SETATTR = 34 */ 394 {rfs4_op_setattr, nullfree, 0}, 395 396 /* OP_SETCLIENTID = 35 */ 397 {rfs4_op_setclientid, nullfree, 0}, 398 399 /* OP_SETCLIENTID_CONFIRM = 36 */ 400 {rfs4_op_setclientid_confirm, nullfree, 0}, 401 402 /* OP_VERIFY = 37 */ 403 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 404 405 /* OP_WRITE = 38 */ 406 {rfs4_op_write, nullfree, 0}, 407 408 /* OP_RELEASE_LOCKOWNER = 39 */ 409 {rfs4_op_release_lockowner, nullfree, 0}, 410 }; 411 412 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 413 414 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 415 416 #ifdef DEBUG 417 418 int rfs4_fillone_debug = 0; 419 int rfs4_shrlock_debug = 0; 420 int rfs4_no_stub_access = 1; 421 int rfs4_rddir_debug = 0; 422 423 static char *rfs4_op_string[] = { 424 "rfs4_op_null", 425 "rfs4_op_1 unused", 426 "rfs4_op_2 unused", 427 "rfs4_op_access", 428 "rfs4_op_close", 429 "rfs4_op_commit", 430 "rfs4_op_create", 431 "rfs4_op_delegpurge", 432 "rfs4_op_delegreturn", 433 "rfs4_op_getattr", 434 "rfs4_op_getfh", 435 "rfs4_op_link", 436 "rfs4_op_lock", 437 "rfs4_op_lockt", 438 "rfs4_op_locku", 439 "rfs4_op_lookup", 440 "rfs4_op_lookupp", 441 "rfs4_op_nverify", 442 "rfs4_op_open", 443 "rfs4_op_openattr", 444 "rfs4_op_open_confirm", 445 "rfs4_op_open_downgrade", 446 "rfs4_op_putfh", 447 "rfs4_op_putpubfh", 448 "rfs4_op_putrootfh", 449 "rfs4_op_read", 450 "rfs4_op_readdir", 451 "rfs4_op_readlink", 452 "rfs4_op_remove", 453 "rfs4_op_rename", 454 "rfs4_op_renew", 455 "rfs4_op_restorefh", 456 "rfs4_op_savefh", 457 "rfs4_op_secinfo", 458 "rfs4_op_setattr", 459 "rfs4_op_setclientid", 460 "rfs4_op_setclient_confirm", 461 "rfs4_op_verify", 462 "rfs4_op_write", 463 "rfs4_op_release_lockowner", 464 "rfs4_op_illegal" 465 }; 466 #endif 467 468 void rfs4_ss_chkclid(rfs4_client_t *); 469 470 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 471 472 #ifdef nextdp 473 #undef nextdp 474 #endif 475 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 476 477 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 478 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 479 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 480 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 481 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 482 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 483 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 484 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 485 NULL, NULL 486 }; 487 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 488 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 489 VOPNAME_READ, { .femop_read = deleg_wr_read }, 490 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 491 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 492 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 493 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 494 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 495 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 496 NULL, NULL 497 }; 498 499 int 500 rfs4_srvrinit(void) 501 { 502 timespec32_t verf; 503 int error; 504 extern void rfs4_attr_init(); 505 extern krwlock_t rfs4_deleg_policy_lock; 506 507 /* 508 * The following algorithm attempts to find a unique verifier 509 * to be used as the write verifier returned from the server 510 * to the client. It is important that this verifier change 511 * whenever the server reboots. Of secondary importance, it 512 * is important for the verifier to be unique between two 513 * different servers. 514 * 515 * Thus, an attempt is made to use the system hostid and the 516 * current time in seconds when the nfssrv kernel module is 517 * loaded. It is assumed that an NFS server will not be able 518 * to boot and then to reboot in less than a second. If the 519 * hostid has not been set, then the current high resolution 520 * time is used. This will ensure different verifiers each 521 * time the server reboots and minimize the chances that two 522 * different servers will have the same verifier. 523 * XXX - this is broken on LP64 kernels. 524 */ 525 verf.tv_sec = (time_t)zone_get_hostid(NULL); 526 if (verf.tv_sec != 0) { 527 verf.tv_nsec = gethrestime_sec(); 528 } else { 529 timespec_t tverf; 530 531 gethrestime(&tverf); 532 verf.tv_sec = (time_t)tverf.tv_sec; 533 verf.tv_nsec = tverf.tv_nsec; 534 } 535 536 Write4verf = *(uint64_t *)&verf; 537 538 rfs4_attr_init(); 539 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 540 541 /* Used to manage create/destroy of server state */ 542 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 543 544 /* Used to manage access to server instance linked list */ 545 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 546 547 /* Used to manage access to rfs4_deleg_policy */ 548 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 549 550 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 551 if (error != 0) { 552 rfs4_disable_delegation(); 553 } else { 554 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 555 &deleg_wrops); 556 if (error != 0) { 557 rfs4_disable_delegation(); 558 fem_free(deleg_rdops); 559 } 560 } 561 562 nfs4_srv_caller_id = fs_new_caller_id(); 563 564 lockt_sysid = lm_alloc_sysidt(); 565 566 vsd_create(&nfs4_srv_vkey, NULL); 567 568 return (0); 569 } 570 571 void 572 rfs4_srvrfini(void) 573 { 574 extern krwlock_t rfs4_deleg_policy_lock; 575 576 if (lockt_sysid != LM_NOSYSID) { 577 lm_free_sysidt(lockt_sysid); 578 lockt_sysid = LM_NOSYSID; 579 } 580 581 mutex_destroy(&rfs4_deleg_lock); 582 mutex_destroy(&rfs4_state_lock); 583 rw_destroy(&rfs4_deleg_policy_lock); 584 585 fem_free(deleg_rdops); 586 fem_free(deleg_wrops); 587 } 588 589 void 590 rfs4_init_compound_state(struct compound_state *cs) 591 { 592 bzero(cs, sizeof (*cs)); 593 cs->cont = TRUE; 594 cs->access = CS_ACCESS_DENIED; 595 cs->deleg = FALSE; 596 cs->mandlock = FALSE; 597 cs->fh.nfs_fh4_val = cs->fhbuf; 598 } 599 600 void 601 rfs4_grace_start(rfs4_servinst_t *sip) 602 { 603 rw_enter(&sip->rwlock, RW_WRITER); 604 sip->start_time = (time_t)TICK_TO_SEC(lbolt); 605 sip->grace_period = rfs4_grace_period; 606 rw_exit(&sip->rwlock); 607 } 608 609 /* 610 * returns true if the instance's grace period has never been started 611 */ 612 int 613 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 614 { 615 time_t start_time; 616 617 rw_enter(&sip->rwlock, RW_READER); 618 start_time = sip->start_time; 619 rw_exit(&sip->rwlock); 620 621 return (start_time == 0); 622 } 623 624 /* 625 * Indicates if server instance is within the 626 * grace period. 627 */ 628 int 629 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 630 { 631 time_t grace_expiry; 632 633 rw_enter(&sip->rwlock, RW_READER); 634 grace_expiry = sip->start_time + sip->grace_period; 635 rw_exit(&sip->rwlock); 636 637 return (((time_t)TICK_TO_SEC(lbolt)) < grace_expiry); 638 } 639 640 int 641 rfs4_clnt_in_grace(rfs4_client_t *cp) 642 { 643 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 644 645 return (rfs4_servinst_in_grace(cp->server_instance)); 646 } 647 648 /* 649 * reset all currently active grace periods 650 */ 651 void 652 rfs4_grace_reset_all(void) 653 { 654 rfs4_servinst_t *sip; 655 656 mutex_enter(&rfs4_servinst_lock); 657 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 658 if (rfs4_servinst_in_grace(sip)) 659 rfs4_grace_start(sip); 660 mutex_exit(&rfs4_servinst_lock); 661 } 662 663 /* 664 * start any new instances' grace periods 665 */ 666 void 667 rfs4_grace_start_new(void) 668 { 669 rfs4_servinst_t *sip; 670 671 mutex_enter(&rfs4_servinst_lock); 672 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 673 if (rfs4_servinst_grace_new(sip)) 674 rfs4_grace_start(sip); 675 mutex_exit(&rfs4_servinst_lock); 676 } 677 678 static rfs4_dss_path_t * 679 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 680 { 681 size_t len; 682 rfs4_dss_path_t *dss_path; 683 684 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 685 686 /* 687 * Take a copy of the string, since the original may be overwritten. 688 * Sadly, no strdup() in the kernel. 689 */ 690 /* allow for NUL */ 691 len = strlen(path) + 1; 692 dss_path->path = kmem_alloc(len, KM_SLEEP); 693 (void) strlcpy(dss_path->path, path, len); 694 695 /* associate with servinst */ 696 dss_path->sip = sip; 697 dss_path->index = index; 698 699 /* 700 * Add to list of served paths. 701 * No locking required, as we're only ever called at startup. 702 */ 703 if (rfs4_dss_pathlist == NULL) { 704 /* this is the first dss_path_t */ 705 706 /* needed for insque/remque */ 707 dss_path->next = dss_path->prev = dss_path; 708 709 rfs4_dss_pathlist = dss_path; 710 } else { 711 insque(dss_path, rfs4_dss_pathlist); 712 } 713 714 return (dss_path); 715 } 716 717 /* 718 * Create a new server instance, and make it the currently active instance. 719 * Note that starting the grace period too early will reduce the clients' 720 * recovery window. 721 */ 722 void 723 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 724 { 725 unsigned i; 726 rfs4_servinst_t *sip; 727 rfs4_oldstate_t *oldstate; 728 729 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 730 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 731 732 sip->start_time = (time_t)0; 733 sip->grace_period = (time_t)0; 734 sip->next = NULL; 735 sip->prev = NULL; 736 737 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 738 /* 739 * This initial dummy entry is required to setup for insque/remque. 740 * It must be skipped over whenever the list is traversed. 741 */ 742 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 743 /* insque/remque require initial list entry to be self-terminated */ 744 oldstate->next = oldstate; 745 oldstate->prev = oldstate; 746 sip->oldstate = oldstate; 747 748 749 sip->dss_npaths = dss_npaths; 750 sip->dss_paths = kmem_alloc(dss_npaths * 751 sizeof (rfs4_dss_path_t *), KM_SLEEP); 752 753 for (i = 0; i < dss_npaths; i++) { 754 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 755 } 756 757 mutex_enter(&rfs4_servinst_lock); 758 if (rfs4_cur_servinst != NULL) { 759 /* add to linked list */ 760 sip->prev = rfs4_cur_servinst; 761 rfs4_cur_servinst->next = sip; 762 } 763 if (start_grace) 764 rfs4_grace_start(sip); 765 /* make the new instance "current" */ 766 rfs4_cur_servinst = sip; 767 768 mutex_exit(&rfs4_servinst_lock); 769 } 770 771 /* 772 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 773 * all instances directly. 774 */ 775 void 776 rfs4_servinst_destroy_all(void) 777 { 778 rfs4_servinst_t *sip, *prev, *current; 779 #ifdef DEBUG 780 int n = 0; 781 #endif 782 783 mutex_enter(&rfs4_servinst_lock); 784 ASSERT(rfs4_cur_servinst != NULL); 785 current = rfs4_cur_servinst; 786 rfs4_cur_servinst = NULL; 787 for (sip = current; sip != NULL; sip = prev) { 788 prev = sip->prev; 789 rw_destroy(&sip->rwlock); 790 if (sip->oldstate) 791 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 792 if (sip->dss_paths) 793 kmem_free(sip->dss_paths, 794 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 795 kmem_free(sip, sizeof (rfs4_servinst_t)); 796 #ifdef DEBUG 797 n++; 798 #endif 799 } 800 mutex_exit(&rfs4_servinst_lock); 801 } 802 803 /* 804 * Assign the current server instance to a client_t. 805 * Should be called with cp->dbe held. 806 */ 807 void 808 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 809 { 810 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 811 812 /* 813 * The lock ensures that if the current instance is in the process 814 * of changing, we will see the new one. 815 */ 816 mutex_enter(&rfs4_servinst_lock); 817 cp->server_instance = sip; 818 mutex_exit(&rfs4_servinst_lock); 819 } 820 821 rfs4_servinst_t * 822 rfs4_servinst(rfs4_client_t *cp) 823 { 824 ASSERT(rfs4_dbe_refcnt(cp->dbe) > 0); 825 826 return (cp->server_instance); 827 } 828 829 /* ARGSUSED */ 830 static void 831 nullfree(caddr_t resop) 832 { 833 } 834 835 /* 836 * This is a fall-through for invalid or not implemented (yet) ops 837 */ 838 /* ARGSUSED */ 839 static void 840 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 841 struct compound_state *cs) 842 { 843 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 844 } 845 846 /* 847 * Check if the security flavor, nfsnum, is in the flavor_list. 848 */ 849 bool_t 850 in_flavor_list(int nfsnum, int *flavor_list, int count) 851 { 852 int i; 853 854 for (i = 0; i < count; i++) { 855 if (nfsnum == flavor_list[i]) 856 return (TRUE); 857 } 858 return (FALSE); 859 } 860 861 /* 862 * Used by rfs4_op_secinfo to get the security information from the 863 * export structure associated with the component. 864 */ 865 /* ARGSUSED */ 866 static nfsstat4 867 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 868 { 869 int error, different_export = 0; 870 vnode_t *dvp, *vp, *tvp; 871 struct exportinfo *exi = NULL; 872 fid_t fid; 873 uint_t count, i; 874 secinfo4 *resok_val; 875 struct secinfo *secp; 876 seconfig_t *si; 877 bool_t did_traverse; 878 int dotdot, walk; 879 880 dvp = cs->vp; 881 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 882 883 /* 884 * If dotdotting, then need to check whether it's above the 885 * root of a filesystem, or above an export point. 886 */ 887 if (dotdot) { 888 889 /* 890 * If dotdotting at the root of a filesystem, then 891 * need to traverse back to the mounted-on filesystem 892 * and do the dotdot lookup there. 893 */ 894 if (cs->vp->v_flag & VROOT) { 895 896 /* 897 * If at the system root, then can 898 * go up no further. 899 */ 900 if (VN_CMP(dvp, rootdir)) 901 return (puterrno4(ENOENT)); 902 903 /* 904 * Traverse back to the mounted-on filesystem 905 */ 906 dvp = untraverse(cs->vp); 907 908 /* 909 * Set the different_export flag so we remember 910 * to pick up a new exportinfo entry for 911 * this new filesystem. 912 */ 913 different_export = 1; 914 } else { 915 916 /* 917 * If dotdotting above an export point then set 918 * the different_export to get new export info. 919 */ 920 different_export = nfs_exported(cs->exi, cs->vp); 921 } 922 } 923 924 /* 925 * Get the vnode for the component "nm". 926 */ 927 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 928 NULL, NULL, NULL); 929 if (error) 930 return (puterrno4(error)); 931 932 /* 933 * If the vnode is in a pseudo filesystem, or if the security flavor 934 * used in the request is valid but not an explicitly shared flavor, 935 * or the access bit indicates that this is a limited access, 936 * check whether this vnode is visible. 937 */ 938 if (!different_export && 939 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 940 cs->access & CS_ACCESS_LIMITED)) { 941 if (! nfs_visible(cs->exi, vp, &different_export)) { 942 VN_RELE(vp); 943 return (puterrno4(ENOENT)); 944 } 945 } 946 947 /* 948 * If it's a mountpoint, then traverse it. 949 */ 950 if (vn_ismntpt(vp)) { 951 tvp = vp; 952 if ((error = traverse(&tvp)) != 0) { 953 VN_RELE(vp); 954 return (puterrno4(error)); 955 } 956 /* remember that we had to traverse mountpoint */ 957 did_traverse = TRUE; 958 vp = tvp; 959 different_export = 1; 960 } else if (vp->v_vfsp != dvp->v_vfsp) { 961 /* 962 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 963 * then vp is probably an LOFS object. We don't need the 964 * realvp, we just need to know that we might have crossed 965 * a server fs boundary and need to call checkexport4. 966 * (LOFS lookup hides server fs mountpoints, and actually calls 967 * traverse) 968 */ 969 different_export = 1; 970 did_traverse = FALSE; 971 } 972 973 /* 974 * Get the export information for it. 975 */ 976 if (different_export) { 977 978 bzero(&fid, sizeof (fid)); 979 fid.fid_len = MAXFIDSZ; 980 error = vop_fid_pseudo(vp, &fid); 981 if (error) { 982 VN_RELE(vp); 983 return (puterrno4(error)); 984 } 985 986 if (dotdot) 987 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 988 else 989 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 990 991 if (exi == NULL) { 992 if (did_traverse == TRUE) { 993 /* 994 * If this vnode is a mounted-on vnode, 995 * but the mounted-on file system is not 996 * exported, send back the secinfo for 997 * the exported node that the mounted-on 998 * vnode lives in. 999 */ 1000 exi = cs->exi; 1001 } else { 1002 VN_RELE(vp); 1003 return (puterrno4(EACCES)); 1004 } 1005 } 1006 } else { 1007 exi = cs->exi; 1008 } 1009 ASSERT(exi != NULL); 1010 1011 1012 /* 1013 * Create the secinfo result based on the security information 1014 * from the exportinfo structure (exi). 1015 * 1016 * Return all flavors for a pseudo node. 1017 * For a real export node, return the flavor that the client 1018 * has access with. 1019 */ 1020 ASSERT(RW_LOCK_HELD(&exported_lock)); 1021 if (PSEUDO(exi)) { 1022 count = exi->exi_export.ex_seccnt; /* total sec count */ 1023 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1024 secp = exi->exi_export.ex_secinfo; 1025 1026 for (i = 0; i < count; i++) { 1027 si = &secp[i].s_secinfo; 1028 resok_val[i].flavor = si->sc_rpcnum; 1029 if (resok_val[i].flavor == RPCSEC_GSS) { 1030 rpcsec_gss_info *info; 1031 1032 info = &resok_val[i].flavor_info; 1033 info->qop = si->sc_qop; 1034 info->service = (rpc_gss_svc_t)si->sc_service; 1035 1036 /* get oid opaque data */ 1037 info->oid.sec_oid4_len = 1038 si->sc_gss_mech_type->length; 1039 info->oid.sec_oid4_val = kmem_alloc( 1040 si->sc_gss_mech_type->length, KM_SLEEP); 1041 bcopy( 1042 si->sc_gss_mech_type->elements, 1043 info->oid.sec_oid4_val, 1044 info->oid.sec_oid4_len); 1045 } 1046 } 1047 resp->SECINFO4resok_len = count; 1048 resp->SECINFO4resok_val = resok_val; 1049 } else { 1050 int ret_cnt = 0, k = 0; 1051 int *flavor_list; 1052 1053 count = exi->exi_export.ex_seccnt; /* total sec count */ 1054 secp = exi->exi_export.ex_secinfo; 1055 1056 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1057 /* find out which flavors to return */ 1058 for (i = 0; i < count; i ++) { 1059 int access, flavor, perm; 1060 1061 flavor = secp[i].s_secinfo.sc_nfsnum; 1062 perm = secp[i].s_flags; 1063 1064 access = nfsauth4_secinfo_access(exi, cs->req, 1065 flavor, perm); 1066 1067 if (! (access & NFSAUTH_DENIED) && 1068 ! (access & NFSAUTH_WRONGSEC)) { 1069 flavor_list[ret_cnt] = flavor; 1070 ret_cnt++; 1071 } 1072 } 1073 1074 /* Create the returning SECINFO value */ 1075 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1076 1077 for (i = 0; i < count; i++) { 1078 /* 1079 * If the flavor is in the flavor list, 1080 * fill in resok_val. 1081 */ 1082 si = &secp[i].s_secinfo; 1083 if (in_flavor_list(si->sc_nfsnum, 1084 flavor_list, ret_cnt)) { 1085 resok_val[k].flavor = si->sc_rpcnum; 1086 if (resok_val[k].flavor == RPCSEC_GSS) { 1087 rpcsec_gss_info *info; 1088 1089 info = &resok_val[k].flavor_info; 1090 info->qop = si->sc_qop; 1091 info->service = (rpc_gss_svc_t) 1092 si->sc_service; 1093 1094 /* get oid opaque data */ 1095 info->oid.sec_oid4_len = 1096 si->sc_gss_mech_type->length; 1097 info->oid.sec_oid4_val = kmem_alloc( 1098 si->sc_gss_mech_type->length, 1099 KM_SLEEP); 1100 bcopy(si->sc_gss_mech_type->elements, 1101 info->oid.sec_oid4_val, 1102 info->oid.sec_oid4_len); 1103 } 1104 k++; 1105 } 1106 if (k >= ret_cnt) 1107 break; 1108 } 1109 resp->SECINFO4resok_len = ret_cnt; 1110 resp->SECINFO4resok_val = resok_val; 1111 kmem_free(flavor_list, count * sizeof (int)); 1112 } 1113 1114 VN_RELE(vp); 1115 return (NFS4_OK); 1116 } 1117 1118 /* 1119 * SECINFO (Operation 33): Obtain required security information on 1120 * the component name in the format of (security-mechanism-oid, qop, service) 1121 * triplets. 1122 */ 1123 /* ARGSUSED */ 1124 static void 1125 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1126 struct compound_state *cs) 1127 { 1128 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1129 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1130 utf8string *utfnm = &args->name; 1131 uint_t len; 1132 char *nm; 1133 struct sockaddr *ca; 1134 char *name = NULL; 1135 1136 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1137 SECINFO4args *, args); 1138 1139 /* 1140 * Current file handle (cfh) should have been set before getting 1141 * into this function. If not, return error. 1142 */ 1143 if (cs->vp == NULL) { 1144 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1145 goto out; 1146 } 1147 1148 if (cs->vp->v_type != VDIR) { 1149 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1150 goto out; 1151 } 1152 1153 /* 1154 * Verify the component name. If failed, error out, but 1155 * do not error out if the component name is a "..". 1156 * SECINFO will return its parents secinfo data for SECINFO "..". 1157 */ 1158 if (!utf8_dir_verify(utfnm)) { 1159 if (utfnm->utf8string_len != 2 || 1160 utfnm->utf8string_val[0] != '.' || 1161 utfnm->utf8string_val[1] != '.') { 1162 *cs->statusp = resp->status = NFS4ERR_INVAL; 1163 goto out; 1164 } 1165 } 1166 1167 nm = utf8_to_str(utfnm, &len, NULL); 1168 if (nm == NULL) { 1169 *cs->statusp = resp->status = NFS4ERR_INVAL; 1170 goto out; 1171 } 1172 1173 if (len > MAXNAMELEN) { 1174 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1175 kmem_free(nm, len); 1176 goto out; 1177 } 1178 /* If necessary, convert to UTF-8 for illbehaved clients */ 1179 1180 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1181 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1182 MAXPATHLEN + 1); 1183 1184 if (name == NULL) { 1185 *cs->statusp = resp->status = NFS4ERR_INVAL; 1186 kmem_free(nm, len); 1187 goto out; 1188 } 1189 1190 1191 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1192 1193 if (name != nm) 1194 kmem_free(name, MAXPATHLEN + 1); 1195 kmem_free(nm, len); 1196 1197 out: 1198 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1199 SECINFO4res *, resp); 1200 } 1201 1202 /* 1203 * Free SECINFO result. 1204 */ 1205 /* ARGSUSED */ 1206 static void 1207 rfs4_op_secinfo_free(nfs_resop4 *resop) 1208 { 1209 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1210 int count, i; 1211 secinfo4 *resok_val; 1212 1213 /* If this is not an Ok result, nothing to free. */ 1214 if (resp->status != NFS4_OK) { 1215 return; 1216 } 1217 1218 count = resp->SECINFO4resok_len; 1219 resok_val = resp->SECINFO4resok_val; 1220 1221 for (i = 0; i < count; i++) { 1222 if (resok_val[i].flavor == RPCSEC_GSS) { 1223 rpcsec_gss_info *info; 1224 1225 info = &resok_val[i].flavor_info; 1226 kmem_free(info->oid.sec_oid4_val, 1227 info->oid.sec_oid4_len); 1228 } 1229 } 1230 kmem_free(resok_val, count * sizeof (secinfo4)); 1231 resp->SECINFO4resok_len = 0; 1232 resp->SECINFO4resok_val = NULL; 1233 } 1234 1235 /* ARGSUSED */ 1236 static void 1237 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1238 struct compound_state *cs) 1239 { 1240 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1241 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1242 int error; 1243 vnode_t *vp; 1244 struct vattr va; 1245 int checkwriteperm; 1246 cred_t *cr = cs->cr; 1247 bslabel_t *clabel, *slabel; 1248 ts_label_t *tslabel; 1249 boolean_t admin_low_client; 1250 1251 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1252 ACCESS4args *, args); 1253 1254 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1255 if (cs->access == CS_ACCESS_DENIED) { 1256 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1257 goto out; 1258 } 1259 #endif 1260 if (cs->vp == NULL) { 1261 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1262 goto out; 1263 } 1264 1265 ASSERT(cr != NULL); 1266 1267 vp = cs->vp; 1268 1269 /* 1270 * If the file system is exported read only, it is not appropriate 1271 * to check write permissions for regular files and directories. 1272 * Special files are interpreted by the client, so the underlying 1273 * permissions are sent back to the client for interpretation. 1274 */ 1275 if (rdonly4(cs->exi, cs->vp, req) && 1276 (vp->v_type == VREG || vp->v_type == VDIR)) 1277 checkwriteperm = 0; 1278 else 1279 checkwriteperm = 1; 1280 1281 /* 1282 * XXX 1283 * We need the mode so that we can correctly determine access 1284 * permissions relative to a mandatory lock file. Access to 1285 * mandatory lock files is denied on the server, so it might 1286 * as well be reflected to the server during the open. 1287 */ 1288 va.va_mask = AT_MODE; 1289 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1290 if (error) { 1291 *cs->statusp = resp->status = puterrno4(error); 1292 goto out; 1293 } 1294 resp->access = 0; 1295 resp->supported = 0; 1296 1297 if (is_system_labeled()) { 1298 ASSERT(req->rq_label != NULL); 1299 clabel = req->rq_label; 1300 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1301 "got client label from request(1)", 1302 struct svc_req *, req); 1303 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1304 if ((tslabel = nfs_getflabel(vp)) == NULL) { 1305 *cs->statusp = resp->status = puterrno4(EACCES); 1306 goto out; 1307 } 1308 slabel = label2bslabel(tslabel); 1309 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1310 char *, "got server label(1) for vp(2)", 1311 bslabel_t *, slabel, vnode_t *, vp); 1312 1313 admin_low_client = B_FALSE; 1314 } else 1315 admin_low_client = B_TRUE; 1316 } 1317 1318 if (args->access & ACCESS4_READ) { 1319 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1320 if (!error && !MANDLOCK(vp, va.va_mode) && 1321 (!is_system_labeled() || admin_low_client || 1322 bldominates(clabel, slabel))) 1323 resp->access |= ACCESS4_READ; 1324 resp->supported |= ACCESS4_READ; 1325 } 1326 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1327 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1328 if (!error && (!is_system_labeled() || admin_low_client || 1329 bldominates(clabel, slabel))) 1330 resp->access |= ACCESS4_LOOKUP; 1331 resp->supported |= ACCESS4_LOOKUP; 1332 } 1333 if (checkwriteperm && 1334 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1335 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1336 if (!error && !MANDLOCK(vp, va.va_mode) && 1337 (!is_system_labeled() || admin_low_client || 1338 blequal(clabel, slabel))) 1339 resp->access |= 1340 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1341 resp->supported |= (ACCESS4_MODIFY | ACCESS4_EXTEND); 1342 } 1343 1344 if (checkwriteperm && 1345 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1346 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1347 if (!error && (!is_system_labeled() || admin_low_client || 1348 blequal(clabel, slabel))) 1349 resp->access |= ACCESS4_DELETE; 1350 resp->supported |= ACCESS4_DELETE; 1351 } 1352 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1353 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1354 if (!error && !MANDLOCK(vp, va.va_mode) && 1355 (!is_system_labeled() || admin_low_client || 1356 bldominates(clabel, slabel))) 1357 resp->access |= ACCESS4_EXECUTE; 1358 resp->supported |= ACCESS4_EXECUTE; 1359 } 1360 1361 if (is_system_labeled() && !admin_low_client) 1362 label_rele(tslabel); 1363 1364 *cs->statusp = resp->status = NFS4_OK; 1365 out: 1366 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1367 ACCESS4res *, resp); 1368 } 1369 1370 /* ARGSUSED */ 1371 static void 1372 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1373 struct compound_state *cs) 1374 { 1375 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1376 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1377 int error; 1378 vnode_t *vp = cs->vp; 1379 cred_t *cr = cs->cr; 1380 vattr_t va; 1381 1382 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1383 COMMIT4args *, args); 1384 1385 if (vp == NULL) { 1386 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1387 goto out; 1388 } 1389 if (cs->access == CS_ACCESS_DENIED) { 1390 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1391 goto out; 1392 } 1393 1394 if (args->offset + args->count < args->offset) { 1395 *cs->statusp = resp->status = NFS4ERR_INVAL; 1396 goto out; 1397 } 1398 1399 va.va_mask = AT_UID; 1400 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1401 1402 /* 1403 * If we can't get the attributes, then we can't do the 1404 * right access checking. So, we'll fail the request. 1405 */ 1406 if (error) { 1407 *cs->statusp = resp->status = puterrno4(error); 1408 goto out; 1409 } 1410 if (rdonly4(cs->exi, cs->vp, req)) { 1411 *cs->statusp = resp->status = NFS4ERR_ROFS; 1412 goto out; 1413 } 1414 1415 if (vp->v_type != VREG) { 1416 if (vp->v_type == VDIR) 1417 resp->status = NFS4ERR_ISDIR; 1418 else 1419 resp->status = NFS4ERR_INVAL; 1420 *cs->statusp = resp->status; 1421 goto out; 1422 } 1423 1424 if (crgetuid(cr) != va.va_uid && 1425 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1426 *cs->statusp = resp->status = puterrno4(error); 1427 goto out; 1428 } 1429 1430 error = VOP_PUTPAGE(vp, args->offset, args->count, 0, cr, NULL); 1431 if (!error) 1432 error = VOP_FSYNC(vp, FNODSYNC, cr, NULL); 1433 1434 if (error) { 1435 *cs->statusp = resp->status = puterrno4(error); 1436 goto out; 1437 } 1438 1439 *cs->statusp = resp->status = NFS4_OK; 1440 resp->writeverf = Write4verf; 1441 out: 1442 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1443 COMMIT4res *, resp); 1444 } 1445 1446 /* 1447 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1448 * was completed. It does the nfsv4 create for special files. 1449 */ 1450 /* ARGSUSED */ 1451 static vnode_t * 1452 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1453 struct compound_state *cs, vattr_t *vap, char *nm) 1454 { 1455 int error; 1456 cred_t *cr = cs->cr; 1457 vnode_t *dvp = cs->vp; 1458 vnode_t *vp = NULL; 1459 int mode; 1460 enum vcexcl excl; 1461 1462 switch (args->type) { 1463 case NF4CHR: 1464 case NF4BLK: 1465 if (secpolicy_sys_devices(cr) != 0) { 1466 *cs->statusp = resp->status = NFS4ERR_PERM; 1467 return (NULL); 1468 } 1469 if (args->type == NF4CHR) 1470 vap->va_type = VCHR; 1471 else 1472 vap->va_type = VBLK; 1473 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1474 args->ftype4_u.devdata.specdata2); 1475 vap->va_mask |= AT_RDEV; 1476 break; 1477 case NF4SOCK: 1478 vap->va_type = VSOCK; 1479 break; 1480 case NF4FIFO: 1481 vap->va_type = VFIFO; 1482 break; 1483 default: 1484 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1485 return (NULL); 1486 } 1487 1488 /* 1489 * Must specify the mode. 1490 */ 1491 if (!(vap->va_mask & AT_MODE)) { 1492 *cs->statusp = resp->status = NFS4ERR_INVAL; 1493 return (NULL); 1494 } 1495 1496 excl = EXCL; 1497 1498 mode = 0; 1499 1500 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1501 if (error) { 1502 *cs->statusp = resp->status = puterrno4(error); 1503 return (NULL); 1504 } 1505 return (vp); 1506 } 1507 1508 /* 1509 * nfsv4 create is used to create non-regular files. For regular files, 1510 * use nfsv4 open. 1511 */ 1512 /* ARGSUSED */ 1513 static void 1514 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1515 struct compound_state *cs) 1516 { 1517 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1518 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1519 int error; 1520 struct vattr bva, iva, iva2, ava, *vap; 1521 cred_t *cr = cs->cr; 1522 vnode_t *dvp = cs->vp; 1523 vnode_t *vp = NULL; 1524 vnode_t *realvp; 1525 char *nm, *lnm; 1526 uint_t len, llen; 1527 int syncval = 0; 1528 struct nfs4_svgetit_arg sarg; 1529 struct nfs4_ntov_table ntov; 1530 struct statvfs64 sb; 1531 nfsstat4 status; 1532 struct sockaddr *ca; 1533 char *name = NULL; 1534 char *lname = NULL; 1535 1536 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1537 CREATE4args *, args); 1538 1539 resp->attrset = 0; 1540 1541 if (dvp == NULL) { 1542 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1543 goto out; 1544 } 1545 1546 /* 1547 * If there is an unshared filesystem mounted on this vnode, 1548 * do not allow to create an object in this directory. 1549 */ 1550 if (vn_ismntpt(dvp)) { 1551 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1552 goto out; 1553 } 1554 1555 /* Verify that type is correct */ 1556 switch (args->type) { 1557 case NF4LNK: 1558 case NF4BLK: 1559 case NF4CHR: 1560 case NF4SOCK: 1561 case NF4FIFO: 1562 case NF4DIR: 1563 break; 1564 default: 1565 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1566 goto out; 1567 }; 1568 1569 if (cs->access == CS_ACCESS_DENIED) { 1570 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1571 goto out; 1572 } 1573 if (dvp->v_type != VDIR) { 1574 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1575 goto out; 1576 } 1577 if (!utf8_dir_verify(&args->objname)) { 1578 *cs->statusp = resp->status = NFS4ERR_INVAL; 1579 goto out; 1580 } 1581 1582 if (rdonly4(cs->exi, cs->vp, req)) { 1583 *cs->statusp = resp->status = NFS4ERR_ROFS; 1584 goto out; 1585 } 1586 1587 /* 1588 * Name of newly created object 1589 */ 1590 nm = utf8_to_fn(&args->objname, &len, NULL); 1591 if (nm == NULL) { 1592 *cs->statusp = resp->status = NFS4ERR_INVAL; 1593 goto out; 1594 } 1595 1596 if (len > MAXNAMELEN) { 1597 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1598 kmem_free(nm, len); 1599 goto out; 1600 } 1601 1602 /* If necessary, convert to UTF-8 for poorly behaved clients */ 1603 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1604 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1605 MAXPATHLEN + 1); 1606 1607 if (name == NULL) { 1608 *cs->statusp = resp->status = NFS4ERR_INVAL; 1609 kmem_free(nm, len); 1610 goto out; 1611 } 1612 1613 resp->attrset = 0; 1614 1615 sarg.sbp = &sb; 1616 nfs4_ntov_table_init(&ntov); 1617 1618 status = do_rfs4_set_attrs(&resp->attrset, 1619 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1620 1621 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1622 status = NFS4ERR_INVAL; 1623 1624 if (status != NFS4_OK) { 1625 *cs->statusp = resp->status = status; 1626 kmem_free(nm, len); 1627 nfs4_ntov_table_free(&ntov, &sarg); 1628 resp->attrset = 0; 1629 goto out; 1630 } 1631 1632 /* Get "before" change value */ 1633 bva.va_mask = AT_CTIME|AT_SEQ; 1634 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1635 if (error) { 1636 *cs->statusp = resp->status = puterrno4(error); 1637 kmem_free(nm, len); 1638 nfs4_ntov_table_free(&ntov, &sarg); 1639 resp->attrset = 0; 1640 goto out; 1641 } 1642 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1643 1644 vap = sarg.vap; 1645 1646 /* 1647 * Set default initial values for attributes when not specified 1648 * in createattrs. 1649 */ 1650 if ((vap->va_mask & AT_UID) == 0) { 1651 vap->va_uid = crgetuid(cr); 1652 vap->va_mask |= AT_UID; 1653 } 1654 if ((vap->va_mask & AT_GID) == 0) { 1655 vap->va_gid = crgetgid(cr); 1656 vap->va_mask |= AT_GID; 1657 } 1658 1659 vap->va_mask |= AT_TYPE; 1660 switch (args->type) { 1661 case NF4DIR: 1662 vap->va_type = VDIR; 1663 if ((vap->va_mask & AT_MODE) == 0) { 1664 vap->va_mode = 0700; /* default: owner rwx only */ 1665 vap->va_mask |= AT_MODE; 1666 } 1667 error = VOP_MKDIR(dvp, nm, vap, &vp, cr, NULL, 0, NULL); 1668 if (error) 1669 break; 1670 1671 /* 1672 * Get the initial "after" sequence number, if it fails, 1673 * set to zero 1674 */ 1675 iva.va_mask = AT_SEQ; 1676 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1677 iva.va_seq = 0; 1678 break; 1679 case NF4LNK: 1680 vap->va_type = VLNK; 1681 if ((vap->va_mask & AT_MODE) == 0) { 1682 vap->va_mode = 0700; /* default: owner rwx only */ 1683 vap->va_mask |= AT_MODE; 1684 } 1685 1686 /* 1687 * symlink names must be treated as data 1688 */ 1689 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1690 1691 if (lnm == NULL) { 1692 *cs->statusp = resp->status = NFS4ERR_INVAL; 1693 if (name != nm) 1694 kmem_free(name, MAXPATHLEN + 1); 1695 kmem_free(nm, len); 1696 nfs4_ntov_table_free(&ntov, &sarg); 1697 resp->attrset = 0; 1698 goto out; 1699 } 1700 1701 if (llen > MAXPATHLEN) { 1702 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1703 if (name != nm) 1704 kmem_free(name, MAXPATHLEN + 1); 1705 kmem_free(nm, len); 1706 kmem_free(lnm, llen); 1707 nfs4_ntov_table_free(&ntov, &sarg); 1708 resp->attrset = 0; 1709 goto out; 1710 } 1711 1712 lname = nfscmd_convname(ca, cs->exi, lnm, 1713 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1714 1715 if (lname == NULL) { 1716 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1717 if (name != nm) 1718 kmem_free(name, MAXPATHLEN + 1); 1719 kmem_free(nm, len); 1720 kmem_free(lnm, llen); 1721 nfs4_ntov_table_free(&ntov, &sarg); 1722 resp->attrset = 0; 1723 goto out; 1724 } 1725 1726 error = VOP_SYMLINK(dvp, nm, vap, lnm, cr, NULL, 0); 1727 if (lname != lnm) 1728 kmem_free(lname, MAXPATHLEN + 1); 1729 if (lnm != NULL) 1730 kmem_free(lnm, llen); 1731 if (error) 1732 break; 1733 1734 /* 1735 * Get the initial "after" sequence number, if it fails, 1736 * set to zero 1737 */ 1738 iva.va_mask = AT_SEQ; 1739 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1740 iva.va_seq = 0; 1741 1742 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, 1743 NULL, NULL, NULL); 1744 if (error) 1745 break; 1746 1747 /* 1748 * va_seq is not safe over VOP calls, check it again 1749 * if it has changed zero out iva to force atomic = FALSE. 1750 */ 1751 iva2.va_mask = AT_SEQ; 1752 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1753 iva2.va_seq != iva.va_seq) 1754 iva.va_seq = 0; 1755 break; 1756 default: 1757 /* 1758 * probably a special file. 1759 */ 1760 if ((vap->va_mask & AT_MODE) == 0) { 1761 vap->va_mode = 0600; /* default: owner rw only */ 1762 vap->va_mask |= AT_MODE; 1763 } 1764 syncval = FNODSYNC; 1765 /* 1766 * We know this will only generate one VOP call 1767 */ 1768 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, nm); 1769 1770 if (vp == NULL) { 1771 if (name != nm) 1772 kmem_free(name, MAXPATHLEN + 1); 1773 kmem_free(nm, len); 1774 nfs4_ntov_table_free(&ntov, &sarg); 1775 resp->attrset = 0; 1776 goto out; 1777 } 1778 1779 /* 1780 * Get the initial "after" sequence number, if it fails, 1781 * set to zero 1782 */ 1783 iva.va_mask = AT_SEQ; 1784 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1785 iva.va_seq = 0; 1786 1787 break; 1788 } 1789 if (name != nm) 1790 kmem_free(name, MAXPATHLEN + 1); 1791 kmem_free(nm, len); 1792 1793 if (error) { 1794 *cs->statusp = resp->status = puterrno4(error); 1795 } 1796 1797 /* 1798 * Force modified data and metadata out to stable storage. 1799 */ 1800 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1801 1802 if (resp->status != NFS4_OK) { 1803 if (vp != NULL) 1804 VN_RELE(vp); 1805 nfs4_ntov_table_free(&ntov, &sarg); 1806 resp->attrset = 0; 1807 goto out; 1808 } 1809 1810 /* 1811 * Finish setup of cinfo response, "before" value already set. 1812 * Get "after" change value, if it fails, simply return the 1813 * before value. 1814 */ 1815 ava.va_mask = AT_CTIME|AT_SEQ; 1816 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1817 ava.va_ctime = bva.va_ctime; 1818 ava.va_seq = 0; 1819 } 1820 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1821 1822 /* 1823 * True verification that object was created with correct 1824 * attrs is impossible. The attrs could have been changed 1825 * immediately after object creation. If attributes did 1826 * not verify, the only recourse for the server is to 1827 * destroy the object. Maybe if some attrs (like gid) 1828 * are set incorrectly, the object should be destroyed; 1829 * however, seems bad as a default policy. Do we really 1830 * want to destroy an object over one of the times not 1831 * verifying correctly? For these reasons, the server 1832 * currently sets bits in attrset for createattrs 1833 * that were set; however, no verification is done. 1834 * 1835 * vmask_to_nmask accounts for vattr bits set on create 1836 * [do_rfs4_set_attrs() only sets resp bits for 1837 * non-vattr/vfs bits.] 1838 * Mask off any bits set by default so as not to return 1839 * more attrset bits than were requested in createattrs 1840 */ 1841 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1842 resp->attrset &= args->createattrs.attrmask; 1843 nfs4_ntov_table_free(&ntov, &sarg); 1844 1845 error = makefh4(&cs->fh, vp, cs->exi); 1846 if (error) { 1847 *cs->statusp = resp->status = puterrno4(error); 1848 } 1849 1850 /* 1851 * The cinfo.atomic = TRUE only if we got no errors, we have 1852 * non-zero va_seq's, and it has incremented by exactly one 1853 * during the creation and it didn't change during the VOP_LOOKUP 1854 * or VOP_FSYNC. 1855 */ 1856 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1857 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1858 resp->cinfo.atomic = TRUE; 1859 else 1860 resp->cinfo.atomic = FALSE; 1861 1862 /* 1863 * Force modified metadata out to stable storage. 1864 * 1865 * if a underlying vp exists, pass it to VOP_FSYNC 1866 */ 1867 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1868 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1869 else 1870 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1871 1872 if (resp->status != NFS4_OK) { 1873 VN_RELE(vp); 1874 goto out; 1875 } 1876 if (cs->vp) 1877 VN_RELE(cs->vp); 1878 1879 cs->vp = vp; 1880 *cs->statusp = resp->status = NFS4_OK; 1881 out: 1882 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1883 CREATE4res *, resp); 1884 } 1885 1886 /*ARGSUSED*/ 1887 static void 1888 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1889 struct compound_state *cs) 1890 { 1891 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1892 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1893 1894 rfs4_op_inval(argop, resop, req, cs); 1895 1896 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1897 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1898 } 1899 1900 /*ARGSUSED*/ 1901 static void 1902 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1903 struct compound_state *cs) 1904 { 1905 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1906 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1907 rfs4_deleg_state_t *dsp; 1908 nfsstat4 status; 1909 1910 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1911 DELEGRETURN4args *, args); 1912 1913 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1914 resp->status = *cs->statusp = status; 1915 if (status != NFS4_OK) 1916 goto out; 1917 1918 /* Ensure specified filehandle matches */ 1919 if (cs->vp != dsp->finfo->vp) { 1920 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1921 } else 1922 rfs4_return_deleg(dsp, FALSE); 1923 1924 rfs4_update_lease(dsp->client); 1925 1926 rfs4_deleg_state_rele(dsp); 1927 out: 1928 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1929 DELEGRETURN4res *, resp); 1930 } 1931 1932 /* 1933 * Check to see if a given "flavor" is an explicitly shared flavor. 1934 * The assumption of this routine is the "flavor" is already a valid 1935 * flavor in the secinfo list of "exi". 1936 * 1937 * e.g. 1938 * # share -o sec=flavor1 /export 1939 * # share -o sec=flavor2 /export/home 1940 * 1941 * flavor2 is not an explicitly shared flavor for /export, 1942 * however it is in the secinfo list for /export thru the 1943 * server namespace setup. 1944 */ 1945 int 1946 is_exported_sec(int flavor, struct exportinfo *exi) 1947 { 1948 int i; 1949 struct secinfo *sp; 1950 1951 sp = exi->exi_export.ex_secinfo; 1952 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1953 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1954 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1955 return (SEC_REF_EXPORTED(&sp[i])); 1956 } 1957 } 1958 1959 /* Should not reach this point based on the assumption */ 1960 return (0); 1961 } 1962 1963 /* 1964 * Check if the security flavor used in the request matches what is 1965 * required at the export point or at the root pseudo node (exi_root). 1966 * 1967 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1968 * 1969 */ 1970 static int 1971 secinfo_match_or_authnone(struct compound_state *cs) 1972 { 1973 int i; 1974 struct secinfo *sp; 1975 1976 /* 1977 * Check cs->nfsflavor (from the request) against 1978 * the current export data in cs->exi. 1979 */ 1980 sp = cs->exi->exi_export.ex_secinfo; 1981 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1982 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1983 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1984 return (1); 1985 } 1986 1987 return (0); 1988 } 1989 1990 /* 1991 * Check the access authority for the client and return the correct error. 1992 */ 1993 nfsstat4 1994 call_checkauth4(struct compound_state *cs, struct svc_req *req) 1995 { 1996 int authres; 1997 1998 /* 1999 * First, check if the security flavor used in the request 2000 * are among the flavors set in the server namespace. 2001 */ 2002 if (!secinfo_match_or_authnone(cs)) { 2003 *cs->statusp = NFS4ERR_WRONGSEC; 2004 return (*cs->statusp); 2005 } 2006 2007 authres = checkauth4(cs, req); 2008 2009 if (authres > 0) { 2010 *cs->statusp = NFS4_OK; 2011 if (! (cs->access & CS_ACCESS_LIMITED)) 2012 cs->access = CS_ACCESS_OK; 2013 } else if (authres == 0) { 2014 *cs->statusp = NFS4ERR_ACCESS; 2015 } else if (authres == -2) { 2016 *cs->statusp = NFS4ERR_WRONGSEC; 2017 } else { 2018 *cs->statusp = NFS4ERR_DELAY; 2019 } 2020 return (*cs->statusp); 2021 } 2022 2023 /* 2024 * bitmap4_to_attrmask is called by getattr and readdir. 2025 * It sets up the vattr mask and determines whether vfsstat call is needed 2026 * based on the input bitmap. 2027 * Returns nfsv4 status. 2028 */ 2029 static nfsstat4 2030 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2031 { 2032 int i; 2033 uint_t va_mask; 2034 struct statvfs64 *sbp = sargp->sbp; 2035 2036 sargp->sbp = NULL; 2037 sargp->flag = 0; 2038 sargp->rdattr_error = NFS4_OK; 2039 sargp->mntdfid_set = FALSE; 2040 if (sargp->cs->vp) 2041 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2042 FH4_ATTRDIR | FH4_NAMEDATTR); 2043 else 2044 sargp->xattr = 0; 2045 2046 /* 2047 * Set rdattr_error_req to true if return error per 2048 * failed entry rather than fail the readdir. 2049 */ 2050 if (breq & FATTR4_RDATTR_ERROR_MASK) 2051 sargp->rdattr_error_req = 1; 2052 else 2053 sargp->rdattr_error_req = 0; 2054 2055 /* 2056 * generate the va_mask 2057 * Handle the easy cases first 2058 */ 2059 switch (breq) { 2060 case NFS4_NTOV_ATTR_MASK: 2061 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2062 return (NFS4_OK); 2063 2064 case NFS4_FS_ATTR_MASK: 2065 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2066 sargp->sbp = sbp; 2067 return (NFS4_OK); 2068 2069 case NFS4_NTOV_ATTR_CACHE_MASK: 2070 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2071 return (NFS4_OK); 2072 2073 case FATTR4_LEASE_TIME_MASK: 2074 sargp->vap->va_mask = 0; 2075 return (NFS4_OK); 2076 2077 default: 2078 va_mask = 0; 2079 for (i = 0; i < nfs4_ntov_map_size; i++) { 2080 if ((breq & nfs4_ntov_map[i].fbit) && 2081 nfs4_ntov_map[i].vbit) 2082 va_mask |= nfs4_ntov_map[i].vbit; 2083 } 2084 2085 /* 2086 * Check is vfsstat is needed 2087 */ 2088 if (breq & NFS4_FS_ATTR_MASK) 2089 sargp->sbp = sbp; 2090 2091 sargp->vap->va_mask = va_mask; 2092 return (NFS4_OK); 2093 } 2094 /* NOTREACHED */ 2095 } 2096 2097 /* 2098 * bitmap4_get_sysattrs is called by getattr and readdir. 2099 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2100 * Returns nfsv4 status. 2101 */ 2102 static nfsstat4 2103 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2104 { 2105 int error; 2106 struct compound_state *cs = sargp->cs; 2107 vnode_t *vp = cs->vp; 2108 2109 if (sargp->sbp != NULL) { 2110 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2111 sargp->sbp = NULL; /* to identify error */ 2112 return (puterrno4(error)); 2113 } 2114 } 2115 2116 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2117 } 2118 2119 static void 2120 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2121 { 2122 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2123 KM_SLEEP); 2124 ntovp->attrcnt = 0; 2125 ntovp->vfsstat = FALSE; 2126 } 2127 2128 static void 2129 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2130 struct nfs4_svgetit_arg *sargp) 2131 { 2132 int i; 2133 union nfs4_attr_u *na; 2134 uint8_t *amap; 2135 2136 /* 2137 * XXX Should do the same checks for whether the bit is set 2138 */ 2139 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2140 i < ntovp->attrcnt; i++, na++, amap++) { 2141 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2142 NFS4ATTR_FREEIT, sargp, na); 2143 } 2144 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2145 /* 2146 * xdr_free for getattr will be done later 2147 */ 2148 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2149 i < ntovp->attrcnt; i++, na++, amap++) { 2150 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2151 } 2152 } 2153 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2154 } 2155 2156 /* 2157 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2158 */ 2159 static nfsstat4 2160 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2161 struct nfs4_svgetit_arg *sargp) 2162 { 2163 int error = 0; 2164 int i, k; 2165 struct nfs4_ntov_table ntov; 2166 XDR xdr; 2167 ulong_t xdr_size; 2168 char *xdr_attrs; 2169 nfsstat4 status = NFS4_OK; 2170 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2171 union nfs4_attr_u *na; 2172 uint8_t *amap; 2173 2174 sargp->op = NFS4ATTR_GETIT; 2175 sargp->flag = 0; 2176 2177 fattrp->attrmask = 0; 2178 /* if no bits requested, then return empty fattr4 */ 2179 if (breq == 0) { 2180 fattrp->attrlist4_len = 0; 2181 fattrp->attrlist4 = NULL; 2182 return (NFS4_OK); 2183 } 2184 2185 /* 2186 * return NFS4ERR_INVAL when client requests write-only attrs 2187 */ 2188 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2189 return (NFS4ERR_INVAL); 2190 2191 nfs4_ntov_table_init(&ntov); 2192 na = ntov.na; 2193 amap = ntov.amap; 2194 2195 /* 2196 * Now loop to get or verify the attrs 2197 */ 2198 for (i = 0; i < nfs4_ntov_map_size; i++) { 2199 if (breq & nfs4_ntov_map[i].fbit) { 2200 if ((*nfs4_ntov_map[i].sv_getit)( 2201 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2202 2203 error = (*nfs4_ntov_map[i].sv_getit)( 2204 NFS4ATTR_GETIT, sargp, na); 2205 2206 /* 2207 * Possible error values: 2208 * >0 if sv_getit failed to 2209 * get the attr; 0 if succeeded; 2210 * <0 if rdattr_error and the 2211 * attribute cannot be returned. 2212 */ 2213 if (error && !(sargp->rdattr_error_req)) 2214 goto done; 2215 /* 2216 * If error then just for entry 2217 */ 2218 if (error == 0) { 2219 fattrp->attrmask |= 2220 nfs4_ntov_map[i].fbit; 2221 *amap++ = 2222 (uint8_t)nfs4_ntov_map[i].nval; 2223 na++; 2224 (ntov.attrcnt)++; 2225 } else if ((error > 0) && 2226 (sargp->rdattr_error == NFS4_OK)) { 2227 sargp->rdattr_error = puterrno4(error); 2228 } 2229 error = 0; 2230 } 2231 } 2232 } 2233 2234 /* 2235 * If rdattr_error was set after the return value for it was assigned, 2236 * update it. 2237 */ 2238 if (prev_rdattr_error != sargp->rdattr_error) { 2239 na = ntov.na; 2240 amap = ntov.amap; 2241 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2242 k = *amap; 2243 if (k < FATTR4_RDATTR_ERROR) { 2244 continue; 2245 } 2246 if ((k == FATTR4_RDATTR_ERROR) && 2247 ((*nfs4_ntov_map[k].sv_getit)( 2248 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2249 2250 (void) (*nfs4_ntov_map[k].sv_getit)( 2251 NFS4ATTR_GETIT, sargp, na); 2252 } 2253 break; 2254 } 2255 } 2256 2257 xdr_size = 0; 2258 na = ntov.na; 2259 amap = ntov.amap; 2260 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2261 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2262 } 2263 2264 fattrp->attrlist4_len = xdr_size; 2265 if (xdr_size) { 2266 /* freed by rfs4_op_getattr_free() */ 2267 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2268 2269 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2270 2271 na = ntov.na; 2272 amap = ntov.amap; 2273 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2274 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2275 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2276 int, *amap); 2277 status = NFS4ERR_SERVERFAULT; 2278 break; 2279 } 2280 } 2281 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2282 } else { 2283 fattrp->attrlist4 = NULL; 2284 } 2285 done: 2286 2287 nfs4_ntov_table_free(&ntov, sargp); 2288 2289 if (error != 0) 2290 status = puterrno4(error); 2291 2292 return (status); 2293 } 2294 2295 /* ARGSUSED */ 2296 static void 2297 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2298 struct compound_state *cs) 2299 { 2300 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2301 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2302 struct nfs4_svgetit_arg sarg; 2303 struct statvfs64 sb; 2304 nfsstat4 status; 2305 2306 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2307 GETATTR4args *, args); 2308 2309 if (cs->vp == NULL) { 2310 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2311 goto out; 2312 } 2313 2314 if (cs->access == CS_ACCESS_DENIED) { 2315 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2316 goto out; 2317 } 2318 2319 sarg.sbp = &sb; 2320 sarg.cs = cs; 2321 2322 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2323 if (status == NFS4_OK) { 2324 status = bitmap4_get_sysattrs(&sarg); 2325 if (status == NFS4_OK) 2326 status = do_rfs4_op_getattr(args->attr_request, 2327 &resp->obj_attributes, &sarg); 2328 } 2329 *cs->statusp = resp->status = status; 2330 out: 2331 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2332 GETATTR4res *, resp); 2333 } 2334 2335 static void 2336 rfs4_op_getattr_free(nfs_resop4 *resop) 2337 { 2338 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2339 2340 nfs4_fattr4_free(&resp->obj_attributes); 2341 } 2342 2343 /* ARGSUSED */ 2344 static void 2345 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2346 struct compound_state *cs) 2347 { 2348 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2349 2350 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2351 2352 if (cs->vp == NULL) { 2353 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2354 goto out; 2355 } 2356 if (cs->access == CS_ACCESS_DENIED) { 2357 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2358 goto out; 2359 } 2360 2361 resp->object.nfs_fh4_val = 2362 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2363 nfs_fh4_copy(&cs->fh, &resp->object); 2364 *cs->statusp = resp->status = NFS4_OK; 2365 out: 2366 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2367 GETFH4res *, resp); 2368 } 2369 2370 static void 2371 rfs4_op_getfh_free(nfs_resop4 *resop) 2372 { 2373 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2374 2375 if (resp->status == NFS4_OK && 2376 resp->object.nfs_fh4_val != NULL) { 2377 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2378 resp->object.nfs_fh4_val = NULL; 2379 resp->object.nfs_fh4_len = 0; 2380 } 2381 } 2382 2383 /* 2384 * illegal: args: void 2385 * res : status (NFS4ERR_OP_ILLEGAL) 2386 */ 2387 /* ARGSUSED */ 2388 static void 2389 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2390 struct svc_req *req, struct compound_state *cs) 2391 { 2392 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2393 2394 resop->resop = OP_ILLEGAL; 2395 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2396 } 2397 2398 /* 2399 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2400 * res: status. If success - CURRENT_FH unchanged, return change_info 2401 */ 2402 /* ARGSUSED */ 2403 static void 2404 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2405 struct compound_state *cs) 2406 { 2407 LINK4args *args = &argop->nfs_argop4_u.oplink; 2408 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2409 int error; 2410 vnode_t *vp; 2411 vnode_t *dvp; 2412 struct vattr bdva, idva, adva; 2413 char *nm; 2414 uint_t len; 2415 struct sockaddr *ca; 2416 char *name = NULL; 2417 2418 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2419 LINK4args *, args); 2420 2421 /* SAVED_FH: source object */ 2422 vp = cs->saved_vp; 2423 if (vp == NULL) { 2424 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2425 goto out; 2426 } 2427 2428 /* CURRENT_FH: target directory */ 2429 dvp = cs->vp; 2430 if (dvp == NULL) { 2431 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2432 goto out; 2433 } 2434 2435 /* 2436 * If there is a non-shared filesystem mounted on this vnode, 2437 * do not allow to link any file in this directory. 2438 */ 2439 if (vn_ismntpt(dvp)) { 2440 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2441 goto out; 2442 } 2443 2444 if (cs->access == CS_ACCESS_DENIED) { 2445 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2446 goto out; 2447 } 2448 2449 /* Check source object's type validity */ 2450 if (vp->v_type == VDIR) { 2451 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2452 goto out; 2453 } 2454 2455 /* Check target directory's type */ 2456 if (dvp->v_type != VDIR) { 2457 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2458 goto out; 2459 } 2460 2461 if (cs->saved_exi != cs->exi) { 2462 *cs->statusp = resp->status = NFS4ERR_XDEV; 2463 goto out; 2464 } 2465 2466 if (!utf8_dir_verify(&args->newname)) { 2467 *cs->statusp = resp->status = NFS4ERR_INVAL; 2468 goto out; 2469 } 2470 2471 nm = utf8_to_fn(&args->newname, &len, NULL); 2472 if (nm == NULL) { 2473 *cs->statusp = resp->status = NFS4ERR_INVAL; 2474 goto out; 2475 } 2476 2477 if (len > MAXNAMELEN) { 2478 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2479 kmem_free(nm, len); 2480 goto out; 2481 } 2482 2483 if (rdonly4(cs->exi, cs->vp, req)) { 2484 *cs->statusp = resp->status = NFS4ERR_ROFS; 2485 kmem_free(nm, len); 2486 goto out; 2487 } 2488 2489 /* Get "before" change value */ 2490 bdva.va_mask = AT_CTIME|AT_SEQ; 2491 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2492 if (error) { 2493 *cs->statusp = resp->status = puterrno4(error); 2494 kmem_free(nm, len); 2495 goto out; 2496 } 2497 2498 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2499 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2500 MAXPATHLEN + 1); 2501 2502 if (name == NULL) { 2503 *cs->statusp = resp->status = NFS4ERR_INVAL; 2504 kmem_free(nm, len); 2505 goto out; 2506 } 2507 2508 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2509 2510 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2511 2512 if (nm != name) 2513 kmem_free(name, MAXPATHLEN + 1); 2514 kmem_free(nm, len); 2515 2516 /* 2517 * Get the initial "after" sequence number, if it fails, set to zero 2518 */ 2519 idva.va_mask = AT_SEQ; 2520 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2521 idva.va_seq = 0; 2522 2523 /* 2524 * Force modified data and metadata out to stable storage. 2525 */ 2526 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2527 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2528 2529 if (error) { 2530 *cs->statusp = resp->status = puterrno4(error); 2531 goto out; 2532 } 2533 2534 /* 2535 * Get "after" change value, if it fails, simply return the 2536 * before value. 2537 */ 2538 adva.va_mask = AT_CTIME|AT_SEQ; 2539 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2540 adva.va_ctime = bdva.va_ctime; 2541 adva.va_seq = 0; 2542 } 2543 2544 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2545 2546 /* 2547 * The cinfo.atomic = TRUE only if we have 2548 * non-zero va_seq's, and it has incremented by exactly one 2549 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2550 */ 2551 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2552 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2553 resp->cinfo.atomic = TRUE; 2554 else 2555 resp->cinfo.atomic = FALSE; 2556 2557 *cs->statusp = resp->status = NFS4_OK; 2558 out: 2559 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2560 LINK4res *, resp); 2561 } 2562 2563 /* 2564 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2565 */ 2566 2567 /* ARGSUSED */ 2568 static nfsstat4 2569 do_rfs4_op_lookup(char *nm, uint_t buflen, struct svc_req *req, 2570 struct compound_state *cs) 2571 { 2572 int error; 2573 int different_export = 0; 2574 vnode_t *vp, *tvp, *pre_tvp = NULL, *oldvp = NULL; 2575 struct exportinfo *exi = NULL, *pre_exi = NULL; 2576 nfsstat4 stat; 2577 fid_t fid; 2578 int attrdir, dotdot, walk; 2579 bool_t is_newvp = FALSE; 2580 2581 if (cs->vp->v_flag & V_XATTRDIR) { 2582 attrdir = 1; 2583 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2584 } else { 2585 attrdir = 0; 2586 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2587 } 2588 2589 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2590 2591 /* 2592 * If dotdotting, then need to check whether it's 2593 * above the root of a filesystem, or above an 2594 * export point. 2595 */ 2596 if (dotdot) { 2597 2598 /* 2599 * If dotdotting at the root of a filesystem, then 2600 * need to traverse back to the mounted-on filesystem 2601 * and do the dotdot lookup there. 2602 */ 2603 if (cs->vp->v_flag & VROOT) { 2604 2605 /* 2606 * If at the system root, then can 2607 * go up no further. 2608 */ 2609 if (VN_CMP(cs->vp, rootdir)) 2610 return (puterrno4(ENOENT)); 2611 2612 /* 2613 * Traverse back to the mounted-on filesystem 2614 */ 2615 cs->vp = untraverse(cs->vp); 2616 2617 /* 2618 * Set the different_export flag so we remember 2619 * to pick up a new exportinfo entry for 2620 * this new filesystem. 2621 */ 2622 different_export = 1; 2623 } else { 2624 2625 /* 2626 * If dotdotting above an export point then set 2627 * the different_export to get new export info. 2628 */ 2629 different_export = nfs_exported(cs->exi, cs->vp); 2630 } 2631 } 2632 2633 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2634 NULL, NULL, NULL); 2635 if (error) 2636 return (puterrno4(error)); 2637 2638 /* 2639 * If the vnode is in a pseudo filesystem, check whether it is visible. 2640 * 2641 * XXX if the vnode is a symlink and it is not visible in 2642 * a pseudo filesystem, return ENOENT (not following symlink). 2643 * V4 client can not mount such symlink. This is a regression 2644 * from V2/V3. 2645 * 2646 * In the same exported filesystem, if the security flavor used 2647 * is not an explicitly shared flavor, limit the view to the visible 2648 * list entries only. This is not a WRONGSEC case because it's already 2649 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2650 */ 2651 if (!different_export && 2652 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2653 cs->access & CS_ACCESS_LIMITED)) { 2654 if (! nfs_visible(cs->exi, vp, &different_export)) { 2655 VN_RELE(vp); 2656 return (puterrno4(ENOENT)); 2657 } 2658 } 2659 2660 /* 2661 * If it's a mountpoint, then traverse it. 2662 */ 2663 if (vn_ismntpt(vp)) { 2664 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2665 pre_tvp = vp; /* save pre-traversed vnode */ 2666 2667 /* 2668 * hold pre_tvp to counteract rele by traverse. We will 2669 * need pre_tvp below if checkexport4 fails 2670 */ 2671 VN_HOLD(pre_tvp); 2672 tvp = vp; 2673 if ((error = traverse(&tvp)) != 0) { 2674 VN_RELE(vp); 2675 VN_RELE(pre_tvp); 2676 return (puterrno4(error)); 2677 } 2678 vp = tvp; 2679 different_export = 1; 2680 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2681 /* 2682 * The vfsp comparison is to handle the case where 2683 * a LOFS mount is shared. lo_lookup traverses mount points, 2684 * and NFS is unaware of local fs transistions because 2685 * v_vfsmountedhere isn't set. For this special LOFS case, 2686 * the dir and the obj returned by lookup will have different 2687 * vfs ptrs. 2688 */ 2689 different_export = 1; 2690 } 2691 2692 if (different_export) { 2693 2694 bzero(&fid, sizeof (fid)); 2695 fid.fid_len = MAXFIDSZ; 2696 error = vop_fid_pseudo(vp, &fid); 2697 if (error) { 2698 VN_RELE(vp); 2699 if (pre_tvp) 2700 VN_RELE(pre_tvp); 2701 return (puterrno4(error)); 2702 } 2703 2704 if (dotdot) 2705 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2706 else 2707 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2708 2709 if (exi == NULL) { 2710 if (pre_tvp) { 2711 /* 2712 * If this vnode is a mounted-on vnode, 2713 * but the mounted-on file system is not 2714 * exported, send back the filehandle for 2715 * the mounted-on vnode, not the root of 2716 * the mounted-on file system. 2717 */ 2718 VN_RELE(vp); 2719 vp = pre_tvp; 2720 exi = pre_exi; 2721 } else { 2722 VN_RELE(vp); 2723 return (puterrno4(EACCES)); 2724 } 2725 } else if (pre_tvp) { 2726 /* we're done with pre_tvp now. release extra hold */ 2727 VN_RELE(pre_tvp); 2728 } 2729 2730 cs->exi = exi; 2731 2732 /* 2733 * Now we do a checkauth4. The reason is that 2734 * this client/user may not have access to the new 2735 * exported file system, and if he does, 2736 * the client/user may be mapped to a different uid. 2737 * 2738 * We start with a new cr, because the checkauth4 done 2739 * in the PUT*FH operation over wrote the cred's uid, 2740 * gid, etc, and we want the real thing before calling 2741 * checkauth4() 2742 */ 2743 crfree(cs->cr); 2744 cs->cr = crdup(cs->basecr); 2745 2746 if (cs->vp) 2747 oldvp = cs->vp; 2748 cs->vp = vp; 2749 is_newvp = TRUE; 2750 2751 stat = call_checkauth4(cs, req); 2752 if (stat != NFS4_OK) { 2753 VN_RELE(cs->vp); 2754 cs->vp = oldvp; 2755 return (stat); 2756 } 2757 } 2758 2759 /* 2760 * After various NFS checks, do a label check on the path 2761 * component. The label on this path should either be the 2762 * global zone's label or a zone's label. We are only 2763 * interested in the zone's label because exported files 2764 * in global zone is accessible (though read-only) to 2765 * clients. The exportability/visibility check is already 2766 * done before reaching this code. 2767 */ 2768 if (is_system_labeled()) { 2769 bslabel_t *clabel; 2770 2771 ASSERT(req->rq_label != NULL); 2772 clabel = req->rq_label; 2773 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2774 "got client label from request(1)", struct svc_req *, req); 2775 2776 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2777 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 2778 error = EACCES; 2779 goto err_out; 2780 } 2781 } else { 2782 /* 2783 * We grant access to admin_low label clients 2784 * only if the client is trusted, i.e. also 2785 * running Solaris Trusted Extension. 2786 */ 2787 struct sockaddr *ca; 2788 int addr_type; 2789 void *ipaddr; 2790 tsol_tpc_t *tp; 2791 2792 ca = (struct sockaddr *)svc_getrpccaller( 2793 req->rq_xprt)->buf; 2794 if (ca->sa_family == AF_INET) { 2795 addr_type = IPV4_VERSION; 2796 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2797 } else if (ca->sa_family == AF_INET6) { 2798 addr_type = IPV6_VERSION; 2799 ipaddr = &((struct sockaddr_in6 *) 2800 ca)->sin6_addr; 2801 } 2802 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2803 if (tp == NULL || tp->tpc_tp.tp_doi != 2804 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2805 SUN_CIPSO) { 2806 if (tp != NULL) 2807 TPC_RELE(tp); 2808 error = EACCES; 2809 goto err_out; 2810 } 2811 TPC_RELE(tp); 2812 } 2813 } 2814 2815 error = makefh4(&cs->fh, vp, cs->exi); 2816 2817 err_out: 2818 if (error) { 2819 if (is_newvp) { 2820 VN_RELE(cs->vp); 2821 cs->vp = oldvp; 2822 } else 2823 VN_RELE(vp); 2824 return (puterrno4(error)); 2825 } 2826 2827 if (!is_newvp) { 2828 if (cs->vp) 2829 VN_RELE(cs->vp); 2830 cs->vp = vp; 2831 } else if (oldvp) 2832 VN_RELE(oldvp); 2833 2834 /* 2835 * if did lookup on attrdir and didn't lookup .., set named 2836 * attr fh flag 2837 */ 2838 if (attrdir && ! dotdot) 2839 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2840 2841 /* Assume false for now, open proc will set this */ 2842 cs->mandlock = FALSE; 2843 2844 return (NFS4_OK); 2845 } 2846 2847 /* ARGSUSED */ 2848 static void 2849 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2850 struct compound_state *cs) 2851 { 2852 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2853 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2854 char *nm; 2855 uint_t len; 2856 struct sockaddr *ca; 2857 char *name = NULL; 2858 2859 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2860 LOOKUP4args *, args); 2861 2862 if (cs->vp == NULL) { 2863 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2864 goto out; 2865 } 2866 2867 if (cs->vp->v_type == VLNK) { 2868 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2869 goto out; 2870 } 2871 2872 if (cs->vp->v_type != VDIR) { 2873 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2874 goto out; 2875 } 2876 2877 if (!utf8_dir_verify(&args->objname)) { 2878 *cs->statusp = resp->status = NFS4ERR_INVAL; 2879 goto out; 2880 } 2881 2882 nm = utf8_to_str(&args->objname, &len, NULL); 2883 if (nm == NULL) { 2884 *cs->statusp = resp->status = NFS4ERR_INVAL; 2885 goto out; 2886 } 2887 2888 if (len > MAXNAMELEN) { 2889 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2890 kmem_free(nm, len); 2891 goto out; 2892 } 2893 2894 /* If necessary, convert to UTF-8 for illbehaved clients */ 2895 2896 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2897 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2898 MAXPATHLEN + 1); 2899 2900 if (name == NULL) { 2901 *cs->statusp = resp->status = NFS4ERR_INVAL; 2902 kmem_free(nm, len); 2903 goto out; 2904 } 2905 2906 *cs->statusp = resp->status = do_rfs4_op_lookup(name, len, req, cs); 2907 2908 if (name != nm) 2909 kmem_free(name, MAXPATHLEN + 1); 2910 kmem_free(nm, len); 2911 2912 out: 2913 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2914 LOOKUP4res *, resp); 2915 } 2916 2917 /* ARGSUSED */ 2918 static void 2919 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2920 struct compound_state *cs) 2921 { 2922 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2923 2924 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2925 2926 if (cs->vp == NULL) { 2927 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2928 goto out; 2929 } 2930 2931 if (cs->vp->v_type != VDIR) { 2932 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2933 goto out; 2934 } 2935 2936 *cs->statusp = resp->status = do_rfs4_op_lookup("..", 3, req, cs); 2937 2938 /* 2939 * From NFSV4 Specification, LOOKUPP should not check for 2940 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2941 */ 2942 if (resp->status == NFS4ERR_WRONGSEC) { 2943 *cs->statusp = resp->status = NFS4_OK; 2944 } 2945 2946 out: 2947 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2948 LOOKUPP4res *, resp); 2949 } 2950 2951 2952 /*ARGSUSED2*/ 2953 static void 2954 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2955 struct compound_state *cs) 2956 { 2957 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2958 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2959 vnode_t *avp = NULL; 2960 int lookup_flags = LOOKUP_XATTR, error; 2961 int exp_ro = 0; 2962 2963 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 2964 OPENATTR4args *, args); 2965 2966 if (cs->vp == NULL) { 2967 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2968 goto out; 2969 } 2970 2971 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 2972 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 2973 *cs->statusp = resp->status = puterrno4(ENOTSUP); 2974 goto out; 2975 } 2976 2977 /* 2978 * If file system supports passing ACE mask to VOP_ACCESS then 2979 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 2980 */ 2981 2982 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 2983 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 2984 V_ACE_MASK, cs->cr, NULL); 2985 else 2986 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 2987 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 2988 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 2989 2990 if (error) { 2991 *cs->statusp = resp->status = puterrno4(EACCES); 2992 goto out; 2993 } 2994 2995 /* 2996 * The CREATE_XATTR_DIR VOP flag cannot be specified if 2997 * the file system is exported read-only -- regardless of 2998 * createdir flag. Otherwise the attrdir would be created 2999 * (assuming server fs isn't mounted readonly locally). If 3000 * VOP_LOOKUP returns ENOENT in this case, the error will 3001 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3002 * because specfs has no VOP_LOOKUP op, so the macro would 3003 * return ENOSYS. EINVAL is returned by all (current) 3004 * Solaris file system implementations when any of their 3005 * restrictions are violated (xattr(dir) can't have xattrdir). 3006 * Returning NOTSUPP is more appropriate in this case 3007 * because the object will never be able to have an attrdir. 3008 */ 3009 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 3010 lookup_flags |= CREATE_XATTR_DIR; 3011 3012 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3013 NULL, NULL, NULL); 3014 3015 if (error) { 3016 if (error == ENOENT && args->createdir && exp_ro) 3017 *cs->statusp = resp->status = puterrno4(EROFS); 3018 else if (error == EINVAL || error == ENOSYS) 3019 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3020 else 3021 *cs->statusp = resp->status = puterrno4(error); 3022 goto out; 3023 } 3024 3025 ASSERT(avp->v_flag & V_XATTRDIR); 3026 3027 error = makefh4(&cs->fh, avp, cs->exi); 3028 3029 if (error) { 3030 VN_RELE(avp); 3031 *cs->statusp = resp->status = puterrno4(error); 3032 goto out; 3033 } 3034 3035 VN_RELE(cs->vp); 3036 cs->vp = avp; 3037 3038 /* 3039 * There is no requirement for an attrdir fh flag 3040 * because the attrdir has a vnode flag to distinguish 3041 * it from regular (non-xattr) directories. The 3042 * FH4_ATTRDIR flag is set for future sanity checks. 3043 */ 3044 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3045 *cs->statusp = resp->status = NFS4_OK; 3046 3047 out: 3048 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3049 OPENATTR4res *, resp); 3050 } 3051 3052 static int 3053 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3054 caller_context_t *ct) 3055 { 3056 int error; 3057 int i; 3058 clock_t delaytime; 3059 3060 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3061 3062 /* 3063 * Don't block on mandatory locks. If this routine returns 3064 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3065 */ 3066 uio->uio_fmode = FNONBLOCK; 3067 3068 for (i = 0; i < rfs4_maxlock_tries; i++) { 3069 3070 3071 if (direction == FREAD) { 3072 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3073 error = VOP_READ(vp, uio, ioflag, cred, ct); 3074 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3075 } else { 3076 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3077 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3078 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3079 } 3080 3081 if (error != EAGAIN) 3082 break; 3083 3084 if (i < rfs4_maxlock_tries - 1) { 3085 delay(delaytime); 3086 delaytime *= 2; 3087 } 3088 } 3089 3090 return (error); 3091 } 3092 3093 /* ARGSUSED */ 3094 static void 3095 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3096 struct compound_state *cs) 3097 { 3098 READ4args *args = &argop->nfs_argop4_u.opread; 3099 READ4res *resp = &resop->nfs_resop4_u.opread; 3100 int error; 3101 int verror; 3102 vnode_t *vp; 3103 struct vattr va; 3104 struct iovec iov; 3105 struct uio uio; 3106 u_offset_t offset; 3107 bool_t *deleg = &cs->deleg; 3108 nfsstat4 stat; 3109 int in_crit = 0; 3110 mblk_t *mp; 3111 int alloc_err = 0; 3112 caller_context_t ct; 3113 3114 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3115 READ4args, args); 3116 3117 vp = cs->vp; 3118 if (vp == NULL) { 3119 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3120 goto out; 3121 } 3122 if (cs->access == CS_ACCESS_DENIED) { 3123 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3124 goto out; 3125 } 3126 3127 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3128 deleg, TRUE, &ct)) != NFS4_OK) { 3129 *cs->statusp = resp->status = stat; 3130 goto out; 3131 } 3132 3133 /* 3134 * Enter the critical region before calling VOP_RWLOCK 3135 * to avoid a deadlock with write requests. 3136 */ 3137 if (nbl_need_check(vp)) { 3138 nbl_start_crit(vp, RW_READER); 3139 in_crit = 1; 3140 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3141 &ct)) { 3142 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3143 goto out; 3144 } 3145 } 3146 3147 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3148 deleg, TRUE, &ct)) != NFS4_OK) { 3149 *cs->statusp = resp->status = stat; 3150 goto out; 3151 } 3152 3153 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3154 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3155 3156 /* 3157 * If we can't get the attributes, then we can't do the 3158 * right access checking. So, we'll fail the request. 3159 */ 3160 if (verror) { 3161 *cs->statusp = resp->status = puterrno4(verror); 3162 goto out; 3163 } 3164 3165 if (vp->v_type != VREG) { 3166 *cs->statusp = resp->status = 3167 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3168 goto out; 3169 } 3170 3171 if (crgetuid(cs->cr) != va.va_uid && 3172 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3173 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3174 *cs->statusp = resp->status = puterrno4(error); 3175 goto out; 3176 } 3177 3178 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3179 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3180 goto out; 3181 } 3182 3183 offset = args->offset; 3184 if (offset >= va.va_size) { 3185 *cs->statusp = resp->status = NFS4_OK; 3186 resp->eof = TRUE; 3187 resp->data_len = 0; 3188 resp->data_val = NULL; 3189 resp->mblk = NULL; 3190 /* RDMA */ 3191 resp->wlist = args->wlist; 3192 resp->wlist_len = resp->data_len; 3193 *cs->statusp = resp->status = NFS4_OK; 3194 goto out; 3195 } 3196 3197 if (args->count == 0) { 3198 *cs->statusp = resp->status = NFS4_OK; 3199 resp->eof = FALSE; 3200 resp->data_len = 0; 3201 resp->data_val = NULL; 3202 resp->mblk = NULL; 3203 /* RDMA */ 3204 resp->wlist = args->wlist; 3205 resp->wlist_len = resp->data_len; 3206 goto out; 3207 } 3208 3209 /* 3210 * Do not allocate memory more than maximum allowed 3211 * transfer size 3212 */ 3213 if (args->count > rfs4_tsize(req)) 3214 args->count = rfs4_tsize(req); 3215 3216 /* 3217 * If returning data via RDMA Write, then grab the chunk list. If we 3218 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3219 */ 3220 if (args->wlist) { 3221 mp = NULL; 3222 (void) rdma_get_wchunk(req, &iov, args->wlist); 3223 } else { 3224 /* 3225 * mp will contain the data to be sent out in the read reply. 3226 * It will be freed after the reply has been sent. Let's 3227 * roundup the data to a BYTES_PER_XDR_UNIT multiple, so that 3228 * the call to xdrmblk_putmblk() never fails. If the first 3229 * alloc of the requested size fails, then decrease the size to 3230 * something more reasonable and wait for the allocation to 3231 * occur. 3232 */ 3233 mp = allocb(RNDUP(args->count), BPRI_MED); 3234 if (mp == NULL) { 3235 if (args->count > MAXBSIZE) 3236 args->count = MAXBSIZE; 3237 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3238 STR_NOSIG, &alloc_err); 3239 } 3240 ASSERT(mp != NULL); 3241 ASSERT(alloc_err == 0); 3242 3243 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3244 iov.iov_len = args->count; 3245 } 3246 3247 uio.uio_iov = &iov; 3248 uio.uio_iovcnt = 1; 3249 uio.uio_segflg = UIO_SYSSPACE; 3250 uio.uio_extflg = UIO_COPY_CACHED; 3251 uio.uio_loffset = args->offset; 3252 uio.uio_resid = args->count; 3253 3254 error = do_io(FREAD, vp, &uio, 0, cs->cr, &ct); 3255 3256 va.va_mask = AT_SIZE; 3257 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3258 3259 if (error) { 3260 freeb(mp); 3261 *cs->statusp = resp->status = puterrno4(error); 3262 goto out; 3263 } 3264 3265 *cs->statusp = resp->status = NFS4_OK; 3266 3267 ASSERT(uio.uio_resid >= 0); 3268 resp->data_len = args->count - uio.uio_resid; 3269 if (mp) { 3270 resp->data_val = (char *)mp->b_datap->db_base; 3271 } else { 3272 resp->data_val = (caddr_t)iov.iov_base; 3273 } 3274 resp->mblk = mp; 3275 3276 if (!verror && offset + resp->data_len == va.va_size) 3277 resp->eof = TRUE; 3278 else 3279 resp->eof = FALSE; 3280 3281 if (args->wlist) { 3282 if (!rdma_setup_read_data4(args, resp)) { 3283 *cs->statusp = resp->status = NFS4ERR_INVAL; 3284 } 3285 } else { 3286 resp->wlist = NULL; 3287 } 3288 3289 out: 3290 if (in_crit) 3291 nbl_end_crit(vp); 3292 3293 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3294 READ4res *, resp); 3295 } 3296 3297 static void 3298 rfs4_op_read_free(nfs_resop4 *resop) 3299 { 3300 READ4res *resp = &resop->nfs_resop4_u.opread; 3301 3302 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3303 freeb(resp->mblk); 3304 resp->mblk = NULL; 3305 resp->data_val = NULL; 3306 resp->data_len = 0; 3307 } 3308 } 3309 3310 static void 3311 rfs4_op_readdir_free(nfs_resop4 * resop) 3312 { 3313 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3314 3315 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3316 freeb(resp->mblk); 3317 resp->mblk = NULL; 3318 resp->data_len = 0; 3319 } 3320 } 3321 3322 3323 /* ARGSUSED */ 3324 static void 3325 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3326 struct compound_state *cs) 3327 { 3328 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3329 int error; 3330 vnode_t *vp; 3331 struct exportinfo *exi, *sav_exi; 3332 nfs_fh4_fmt_t *fh_fmtp; 3333 3334 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3335 3336 if (cs->vp) { 3337 VN_RELE(cs->vp); 3338 cs->vp = NULL; 3339 } 3340 3341 if (cs->cr) 3342 crfree(cs->cr); 3343 3344 cs->cr = crdup(cs->basecr); 3345 3346 vp = exi_public->exi_vp; 3347 if (vp == NULL) { 3348 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3349 goto out; 3350 } 3351 3352 if (is_system_labeled()) { 3353 bslabel_t *clabel; 3354 3355 ASSERT(req->rq_label != NULL); 3356 clabel = req->rq_label; 3357 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3358 "got client label from request(1)", 3359 struct svc_req *, req); 3360 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3361 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK)) { 3362 *cs->statusp = resp->status = 3363 NFS4ERR_SERVERFAULT; 3364 return; 3365 } 3366 } 3367 } 3368 3369 error = makefh4(&cs->fh, vp, exi_public); 3370 if (error != 0) { 3371 *cs->statusp = resp->status = puterrno4(error); 3372 goto out; 3373 } 3374 sav_exi = cs->exi; 3375 if (exi_public == exi_root) { 3376 /* 3377 * No filesystem is actually shared public, so we default 3378 * to exi_root. In this case, we must check whether root 3379 * is exported. 3380 */ 3381 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3382 3383 /* 3384 * if root filesystem is exported, the exportinfo struct that we 3385 * should use is what checkexport4 returns, because root_exi is 3386 * actually a mostly empty struct. 3387 */ 3388 exi = checkexport4(&fh_fmtp->fh4_fsid, 3389 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3390 cs->exi = ((exi != NULL) ? exi : exi_public); 3391 } else { 3392 /* 3393 * it's a properly shared filesystem 3394 */ 3395 cs->exi = exi_public; 3396 } 3397 3398 VN_HOLD(vp); 3399 cs->vp = vp; 3400 3401 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3402 VN_RELE(cs->vp); 3403 cs->vp = NULL; 3404 cs->exi = sav_exi; 3405 goto out; 3406 } 3407 3408 *cs->statusp = resp->status = NFS4_OK; 3409 out: 3410 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3411 PUTPUBFH4res *, resp); 3412 } 3413 3414 /* 3415 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3416 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3417 * or joe have restrictive search permissions, then we shouldn't let 3418 * the client get a file handle. This is easy to enforce. However, we 3419 * don't know what security flavor should be used until we resolve the 3420 * path name. Another complication is uid mapping. If root is 3421 * the user, then it will be mapped to the anonymous user by default, 3422 * but we won't know that till we've resolved the path name. And we won't 3423 * know what the anonymous user is. 3424 * Luckily, SECINFO is specified to take a full filename. 3425 * So what we will have to in rfs4_op_lookup is check that flavor of 3426 * the target object matches that of the request, and if root was the 3427 * caller, check for the root= and anon= options, and if necessary, 3428 * repeat the lookup using the right cred_t. But that's not done yet. 3429 */ 3430 /* ARGSUSED */ 3431 static void 3432 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3433 struct compound_state *cs) 3434 { 3435 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3436 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3437 nfs_fh4_fmt_t *fh_fmtp; 3438 3439 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3440 PUTFH4args *, args); 3441 3442 if (cs->vp) { 3443 VN_RELE(cs->vp); 3444 cs->vp = NULL; 3445 } 3446 3447 if (cs->cr) { 3448 crfree(cs->cr); 3449 cs->cr = NULL; 3450 } 3451 3452 3453 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3454 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3455 goto out; 3456 } 3457 3458 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3459 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3460 NULL); 3461 3462 if (cs->exi == NULL) { 3463 *cs->statusp = resp->status = NFS4ERR_STALE; 3464 goto out; 3465 } 3466 3467 cs->cr = crdup(cs->basecr); 3468 3469 ASSERT(cs->cr != NULL); 3470 3471 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3472 *cs->statusp = resp->status; 3473 goto out; 3474 } 3475 3476 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3477 VN_RELE(cs->vp); 3478 cs->vp = NULL; 3479 goto out; 3480 } 3481 3482 nfs_fh4_copy(&args->object, &cs->fh); 3483 *cs->statusp = resp->status = NFS4_OK; 3484 cs->deleg = FALSE; 3485 3486 out: 3487 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3488 PUTFH4res *, resp); 3489 } 3490 3491 /* ARGSUSED */ 3492 static void 3493 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3494 struct compound_state *cs) 3495 3496 { 3497 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3498 int error; 3499 fid_t fid; 3500 struct exportinfo *exi, *sav_exi; 3501 3502 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3503 3504 if (cs->vp) { 3505 VN_RELE(cs->vp); 3506 cs->vp = NULL; 3507 } 3508 3509 if (cs->cr) 3510 crfree(cs->cr); 3511 3512 cs->cr = crdup(cs->basecr); 3513 3514 /* 3515 * Using rootdir, the system root vnode, 3516 * get its fid. 3517 */ 3518 bzero(&fid, sizeof (fid)); 3519 fid.fid_len = MAXFIDSZ; 3520 error = vop_fid_pseudo(rootdir, &fid); 3521 if (error != 0) { 3522 *cs->statusp = resp->status = puterrno4(error); 3523 goto out; 3524 } 3525 3526 /* 3527 * Then use the root fsid & fid it to find out if it's exported 3528 * 3529 * If the server root isn't exported directly, then 3530 * it should at least be a pseudo export based on 3531 * one or more exports further down in the server's 3532 * file tree. 3533 */ 3534 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3535 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3536 NFS4_DEBUG(rfs4_debug, 3537 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3538 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3539 goto out; 3540 } 3541 3542 /* 3543 * Now make a filehandle based on the root 3544 * export and root vnode. 3545 */ 3546 error = makefh4(&cs->fh, rootdir, exi); 3547 if (error != 0) { 3548 *cs->statusp = resp->status = puterrno4(error); 3549 goto out; 3550 } 3551 3552 sav_exi = cs->exi; 3553 cs->exi = exi; 3554 3555 VN_HOLD(rootdir); 3556 cs->vp = rootdir; 3557 3558 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3559 VN_RELE(rootdir); 3560 cs->vp = NULL; 3561 cs->exi = sav_exi; 3562 goto out; 3563 } 3564 3565 *cs->statusp = resp->status = NFS4_OK; 3566 cs->deleg = FALSE; 3567 out: 3568 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3569 PUTROOTFH4res *, resp); 3570 } 3571 3572 /* 3573 * A directory entry is a valid nfsv4 entry if 3574 * - it has a non-zero ino 3575 * - it is not a dot or dotdot name 3576 * - it is visible in a pseudo export or in a real export that can 3577 * only have a limited view. 3578 */ 3579 static bool_t 3580 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3581 int *expseudo, int check_visible) 3582 { 3583 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3584 *expseudo = 0; 3585 return (FALSE); 3586 } 3587 3588 if (! check_visible) { 3589 *expseudo = 0; 3590 return (TRUE); 3591 } 3592 3593 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 3594 } 3595 3596 /* 3597 * set_rdattr_params sets up the variables used to manage what information 3598 * to get for each directory entry. 3599 */ 3600 static nfsstat4 3601 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3602 bitmap4 attrs, bool_t *need_to_lookup) 3603 { 3604 uint_t va_mask; 3605 nfsstat4 status; 3606 bitmap4 objbits; 3607 3608 status = bitmap4_to_attrmask(attrs, sargp); 3609 if (status != NFS4_OK) { 3610 /* 3611 * could not even figure attr mask 3612 */ 3613 return (status); 3614 } 3615 va_mask = sargp->vap->va_mask; 3616 3617 /* 3618 * dirent's d_ino is always correct value for mounted_on_fileid. 3619 * mntdfid_set is set once here, but mounted_on_fileid is 3620 * set in main dirent processing loop for each dirent. 3621 * The mntdfid_set is a simple optimization that lets the 3622 * server attr code avoid work when caller is readdir. 3623 */ 3624 sargp->mntdfid_set = TRUE; 3625 3626 /* 3627 * Lookup entry only if client asked for any of the following: 3628 * a) vattr attrs 3629 * b) vfs attrs 3630 * c) attrs w/per-object scope requested (change, filehandle, etc) 3631 * other than mounted_on_fileid (which we can take from dirent) 3632 */ 3633 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3634 3635 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3636 *need_to_lookup = TRUE; 3637 else 3638 *need_to_lookup = FALSE; 3639 3640 if (sargp->sbp == NULL) 3641 return (NFS4_OK); 3642 3643 /* 3644 * If filesystem attrs are requested, get them now from the 3645 * directory vp, as most entries will have same filesystem. The only 3646 * exception are mounted over entries but we handle 3647 * those as we go (XXX mounted over detection not yet implemented). 3648 */ 3649 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3650 status = bitmap4_get_sysattrs(sargp); 3651 sargp->vap->va_mask = va_mask; 3652 3653 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3654 /* 3655 * Failed to get filesystem attributes. 3656 * Return a rdattr_error for each entry, but don't fail. 3657 * However, don't get any obj-dependent attrs. 3658 */ 3659 sargp->rdattr_error = status; /* for rdattr_error */ 3660 *need_to_lookup = FALSE; 3661 /* 3662 * At least get fileid for regular readdir output 3663 */ 3664 sargp->vap->va_mask &= AT_NODEID; 3665 status = NFS4_OK; 3666 } 3667 3668 return (status); 3669 } 3670 3671 /* 3672 * readlink: args: CURRENT_FH. 3673 * res: status. If success - CURRENT_FH unchanged, return linktext. 3674 */ 3675 3676 /* ARGSUSED */ 3677 static void 3678 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3679 struct compound_state *cs) 3680 { 3681 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3682 int error; 3683 vnode_t *vp; 3684 struct iovec iov; 3685 struct vattr va; 3686 struct uio uio; 3687 char *data; 3688 struct sockaddr *ca; 3689 char *name = NULL; 3690 3691 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3692 3693 /* CURRENT_FH: directory */ 3694 vp = cs->vp; 3695 if (vp == NULL) { 3696 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3697 goto out; 3698 } 3699 3700 if (cs->access == CS_ACCESS_DENIED) { 3701 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3702 goto out; 3703 } 3704 3705 if (vp->v_type == VDIR) { 3706 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3707 goto out; 3708 } 3709 3710 if (vp->v_type != VLNK) { 3711 *cs->statusp = resp->status = NFS4ERR_INVAL; 3712 goto out; 3713 } 3714 3715 va.va_mask = AT_MODE; 3716 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3717 if (error) { 3718 *cs->statusp = resp->status = puterrno4(error); 3719 goto out; 3720 } 3721 3722 if (MANDLOCK(vp, va.va_mode)) { 3723 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3724 goto out; 3725 } 3726 3727 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3728 3729 iov.iov_base = data; 3730 iov.iov_len = MAXPATHLEN; 3731 uio.uio_iov = &iov; 3732 uio.uio_iovcnt = 1; 3733 uio.uio_segflg = UIO_SYSSPACE; 3734 uio.uio_extflg = UIO_COPY_CACHED; 3735 uio.uio_loffset = 0; 3736 uio.uio_resid = MAXPATHLEN; 3737 3738 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3739 3740 if (error) { 3741 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3742 *cs->statusp = resp->status = puterrno4(error); 3743 goto out; 3744 } 3745 3746 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3747 3748 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3749 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3750 MAXPATHLEN + 1); 3751 3752 if (name == NULL) { 3753 /* 3754 * Even though the conversion failed, we return 3755 * something. We just don't translate it. 3756 */ 3757 name = data; 3758 } 3759 3760 /* 3761 * treat link name as data 3762 */ 3763 (void) str_to_utf8(name, &resp->link); 3764 3765 if (name != data) 3766 kmem_free(name, MAXPATHLEN + 1); 3767 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3768 *cs->statusp = resp->status = NFS4_OK; 3769 3770 out: 3771 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3772 READLINK4res *, resp); 3773 } 3774 3775 static void 3776 rfs4_op_readlink_free(nfs_resop4 *resop) 3777 { 3778 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3779 utf8string *symlink = &resp->link; 3780 3781 if (symlink->utf8string_val) { 3782 UTF8STRING_FREE(*symlink) 3783 } 3784 } 3785 3786 /* 3787 * release_lockowner: 3788 * Release any state associated with the supplied 3789 * lockowner. Note if any lo_state is holding locks we will not 3790 * rele that lo_state and thus the lockowner will not be destroyed. 3791 * A client using lock after the lock owner stateid has been released 3792 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3793 * to reissue the lock with new_lock_owner set to TRUE. 3794 * args: lock_owner 3795 * res: status 3796 */ 3797 /* ARGSUSED */ 3798 static void 3799 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3800 struct svc_req *req, struct compound_state *cs) 3801 { 3802 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3803 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3804 rfs4_lockowner_t *lo; 3805 rfs4_openowner_t *oop; 3806 rfs4_state_t *sp; 3807 rfs4_lo_state_t *lsp; 3808 rfs4_client_t *cp; 3809 bool_t create = FALSE; 3810 locklist_t *llist; 3811 sysid_t sysid; 3812 3813 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3814 cs, RELEASE_LOCKOWNER4args *, ap); 3815 3816 /* Make sure there is a clientid around for this request */ 3817 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3818 3819 if (cp == NULL) { 3820 *cs->statusp = resp->status = 3821 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3822 goto out; 3823 } 3824 rfs4_client_rele(cp); 3825 3826 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3827 if (lo == NULL) { 3828 *cs->statusp = resp->status = NFS4_OK; 3829 goto out; 3830 } 3831 ASSERT(lo->client != NULL); 3832 3833 /* 3834 * Check for EXPIRED client. If so will reap state with in a lease 3835 * period or on next set_clientid_confirm step 3836 */ 3837 if (rfs4_lease_expired(lo->client)) { 3838 rfs4_lockowner_rele(lo); 3839 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3840 goto out; 3841 } 3842 3843 /* 3844 * If no sysid has been assigned, then no locks exist; just return. 3845 */ 3846 rfs4_dbe_lock(lo->client->dbe); 3847 if (lo->client->sysidt == LM_NOSYSID) { 3848 rfs4_lockowner_rele(lo); 3849 rfs4_dbe_unlock(lo->client->dbe); 3850 goto out; 3851 } 3852 3853 sysid = lo->client->sysidt; 3854 rfs4_dbe_unlock(lo->client->dbe); 3855 3856 /* 3857 * Mark the lockowner invalid. 3858 */ 3859 rfs4_dbe_hide(lo->dbe); 3860 3861 /* 3862 * sysid-pid pair should now not be used since the lockowner is 3863 * invalid. If the client were to instantiate the lockowner again 3864 * it would be assigned a new pid. Thus we can get the list of 3865 * current locks. 3866 */ 3867 3868 llist = flk_get_active_locks(sysid, lo->pid); 3869 /* If we are still holding locks fail */ 3870 if (llist != NULL) { 3871 3872 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3873 3874 flk_free_locklist(llist); 3875 /* 3876 * We need to unhide the lockowner so the client can 3877 * try it again. The bad thing here is if the client 3878 * has a logic error that took it here in the first place 3879 * he probably has lost accounting of the locks that it 3880 * is holding. So we may have dangling state until the 3881 * open owner state is reaped via close. One scenario 3882 * that could possibly occur is that the client has 3883 * sent the unlock request(s) in separate threads 3884 * and has not waited for the replies before sending the 3885 * RELEASE_LOCKOWNER request. Presumably, it would expect 3886 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3887 * reissuing the request. 3888 */ 3889 rfs4_dbe_unhide(lo->dbe); 3890 rfs4_lockowner_rele(lo); 3891 goto out; 3892 } 3893 3894 /* 3895 * For the corresponding client we need to check each open 3896 * owner for any opens that have lockowner state associated 3897 * with this lockowner. 3898 */ 3899 3900 rfs4_dbe_lock(lo->client->dbe); 3901 for (oop = lo->client->openownerlist.next->oop; oop != NULL; 3902 oop = oop->openownerlist.next->oop) { 3903 3904 rfs4_dbe_lock(oop->dbe); 3905 for (sp = oop->ownerstateids.next->sp; sp != NULL; 3906 sp = sp->ownerstateids.next->sp) { 3907 3908 rfs4_dbe_lock(sp->dbe); 3909 for (lsp = sp->lockownerlist.next->lsp; 3910 lsp != NULL; lsp = lsp->lockownerlist.next->lsp) { 3911 if (lsp->locker == lo) { 3912 rfs4_dbe_lock(lsp->dbe); 3913 rfs4_dbe_invalidate(lsp->dbe); 3914 rfs4_dbe_unlock(lsp->dbe); 3915 } 3916 } 3917 rfs4_dbe_unlock(sp->dbe); 3918 } 3919 rfs4_dbe_unlock(oop->dbe); 3920 } 3921 rfs4_dbe_unlock(lo->client->dbe); 3922 3923 rfs4_lockowner_rele(lo); 3924 3925 *cs->statusp = resp->status = NFS4_OK; 3926 3927 out: 3928 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 3929 cs, RELEASE_LOCKOWNER4res *, resp); 3930 } 3931 3932 /* 3933 * short utility function to lookup a file and recall the delegation 3934 */ 3935 static rfs4_file_t * 3936 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 3937 int *lkup_error, cred_t *cr) 3938 { 3939 vnode_t *vp; 3940 rfs4_file_t *fp = NULL; 3941 bool_t fcreate = FALSE; 3942 int error; 3943 3944 if (vpp) 3945 *vpp = NULL; 3946 3947 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 3948 NULL)) == 0) { 3949 if (vp->v_type == VREG) 3950 fp = rfs4_findfile(vp, NULL, &fcreate); 3951 if (vpp) 3952 *vpp = vp; 3953 else 3954 VN_RELE(vp); 3955 } 3956 3957 if (lkup_error) 3958 *lkup_error = error; 3959 3960 return (fp); 3961 } 3962 3963 /* 3964 * remove: args: CURRENT_FH: directory; name. 3965 * res: status. If success - CURRENT_FH unchanged, return change_info 3966 * for directory. 3967 */ 3968 /* ARGSUSED */ 3969 static void 3970 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3971 struct compound_state *cs) 3972 { 3973 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 3974 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 3975 int error; 3976 vnode_t *dvp, *vp; 3977 struct vattr bdva, idva, adva; 3978 char *nm; 3979 uint_t len; 3980 rfs4_file_t *fp; 3981 int in_crit = 0; 3982 bslabel_t *clabel; 3983 struct sockaddr *ca; 3984 char *name = NULL; 3985 3986 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 3987 REMOVE4args *, args); 3988 3989 /* CURRENT_FH: directory */ 3990 dvp = cs->vp; 3991 if (dvp == NULL) { 3992 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3993 goto out; 3994 } 3995 3996 if (cs->access == CS_ACCESS_DENIED) { 3997 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3998 goto out; 3999 } 4000 4001 /* 4002 * If there is an unshared filesystem mounted on this vnode, 4003 * Do not allow to remove anything in this directory. 4004 */ 4005 if (vn_ismntpt(dvp)) { 4006 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4007 goto out; 4008 } 4009 4010 if (dvp->v_type != VDIR) { 4011 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4012 goto out; 4013 } 4014 4015 if (!utf8_dir_verify(&args->target)) { 4016 *cs->statusp = resp->status = NFS4ERR_INVAL; 4017 goto out; 4018 } 4019 4020 /* 4021 * Lookup the file so that we can check if it's a directory 4022 */ 4023 nm = utf8_to_fn(&args->target, &len, NULL); 4024 if (nm == NULL) { 4025 *cs->statusp = resp->status = NFS4ERR_INVAL; 4026 goto out; 4027 } 4028 4029 if (len > MAXNAMELEN) { 4030 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4031 kmem_free(nm, len); 4032 goto out; 4033 } 4034 4035 if (rdonly4(cs->exi, cs->vp, req)) { 4036 *cs->statusp = resp->status = NFS4ERR_ROFS; 4037 kmem_free(nm, len); 4038 goto out; 4039 } 4040 4041 /* If necessary, convert to UTF-8 for illbehaved clients */ 4042 4043 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4044 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4045 MAXPATHLEN + 1); 4046 4047 if (name == NULL) { 4048 *cs->statusp = resp->status = NFS4ERR_INVAL; 4049 kmem_free(nm, len); 4050 goto out; 4051 } 4052 4053 /* 4054 * Lookup the file to determine type and while we are see if 4055 * there is a file struct around and check for delegation. 4056 * We don't need to acquire va_seq before this lookup, if 4057 * it causes an update, cinfo.before will not match, which will 4058 * trigger a cache flush even if atomic is TRUE. 4059 */ 4060 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4061 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4062 NULL)) { 4063 VN_RELE(vp); 4064 rfs4_file_rele(fp); 4065 *cs->statusp = resp->status = NFS4ERR_DELAY; 4066 if (nm != name) 4067 kmem_free(name, MAXPATHLEN + 1); 4068 kmem_free(nm, len); 4069 goto out; 4070 } 4071 } 4072 4073 /* Didn't find anything to remove */ 4074 if (vp == NULL) { 4075 *cs->statusp = resp->status = error; 4076 if (nm != name) 4077 kmem_free(name, MAXPATHLEN + 1); 4078 kmem_free(nm, len); 4079 goto out; 4080 } 4081 4082 if (nbl_need_check(vp)) { 4083 nbl_start_crit(vp, RW_READER); 4084 in_crit = 1; 4085 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4086 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4087 if (nm != name) 4088 kmem_free(name, MAXPATHLEN + 1); 4089 kmem_free(nm, len); 4090 nbl_end_crit(vp); 4091 VN_RELE(vp); 4092 if (fp) { 4093 rfs4_clear_dont_grant(fp); 4094 rfs4_file_rele(fp); 4095 } 4096 goto out; 4097 } 4098 } 4099 4100 /* check label before allowing removal */ 4101 if (is_system_labeled()) { 4102 ASSERT(req->rq_label != NULL); 4103 clabel = req->rq_label; 4104 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4105 "got client label from request(1)", 4106 struct svc_req *, req); 4107 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4108 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK)) { 4109 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4110 if (name != nm) 4111 kmem_free(name, MAXPATHLEN + 1); 4112 kmem_free(nm, len); 4113 if (in_crit) 4114 nbl_end_crit(vp); 4115 VN_RELE(vp); 4116 if (fp) { 4117 rfs4_clear_dont_grant(fp); 4118 rfs4_file_rele(fp); 4119 } 4120 goto out; 4121 } 4122 } 4123 } 4124 4125 /* Get dir "before" change value */ 4126 bdva.va_mask = AT_CTIME|AT_SEQ; 4127 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4128 if (error) { 4129 *cs->statusp = resp->status = puterrno4(error); 4130 if (nm != name) 4131 kmem_free(name, MAXPATHLEN + 1); 4132 kmem_free(nm, len); 4133 goto out; 4134 } 4135 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4136 4137 /* Actually do the REMOVE operation */ 4138 if (vp->v_type == VDIR) { 4139 /* 4140 * Can't remove a directory that has a mounted-on filesystem. 4141 */ 4142 if (vn_ismntpt(vp)) { 4143 error = EACCES; 4144 } else { 4145 /* 4146 * System V defines rmdir to return EEXIST, 4147 * not * ENOTEMPTY, if the directory is not 4148 * empty. A System V NFS server needs to map 4149 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4150 * transmit over the wire. 4151 */ 4152 if ((error = VOP_RMDIR(dvp, nm, rootdir, cs->cr, 4153 NULL, 0)) == EEXIST) 4154 error = ENOTEMPTY; 4155 } 4156 } else { 4157 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4158 fp != NULL) { 4159 struct vattr va; 4160 vnode_t *tvp; 4161 4162 rfs4_dbe_lock(fp->dbe); 4163 tvp = fp->vp; 4164 if (tvp) 4165 VN_HOLD(tvp); 4166 rfs4_dbe_unlock(fp->dbe); 4167 4168 if (tvp) { 4169 /* 4170 * This is va_seq safe because we are not 4171 * manipulating dvp. 4172 */ 4173 va.va_mask = AT_NLINK; 4174 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4175 va.va_nlink == 0) { 4176 /* Remove state on file remove */ 4177 if (in_crit) { 4178 nbl_end_crit(vp); 4179 in_crit = 0; 4180 } 4181 rfs4_close_all_state(fp); 4182 } 4183 VN_RELE(tvp); 4184 } 4185 } 4186 } 4187 4188 if (in_crit) 4189 nbl_end_crit(vp); 4190 VN_RELE(vp); 4191 4192 if (fp) { 4193 rfs4_clear_dont_grant(fp); 4194 rfs4_file_rele(fp); 4195 } 4196 if (nm != name) 4197 kmem_free(name, MAXPATHLEN + 1); 4198 kmem_free(nm, len); 4199 4200 if (error) { 4201 *cs->statusp = resp->status = puterrno4(error); 4202 goto out; 4203 } 4204 4205 /* 4206 * Get the initial "after" sequence number, if it fails, set to zero 4207 */ 4208 idva.va_mask = AT_SEQ; 4209 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4210 idva.va_seq = 0; 4211 4212 /* 4213 * Force modified data and metadata out to stable storage. 4214 */ 4215 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4216 4217 /* 4218 * Get "after" change value, if it fails, simply return the 4219 * before value. 4220 */ 4221 adva.va_mask = AT_CTIME|AT_SEQ; 4222 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4223 adva.va_ctime = bdva.va_ctime; 4224 adva.va_seq = 0; 4225 } 4226 4227 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4228 4229 /* 4230 * The cinfo.atomic = TRUE only if we have 4231 * non-zero va_seq's, and it has incremented by exactly one 4232 * during the VOP_REMOVE/RMDIR and it didn't change during 4233 * the VOP_FSYNC. 4234 */ 4235 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4236 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4237 resp->cinfo.atomic = TRUE; 4238 else 4239 resp->cinfo.atomic = FALSE; 4240 4241 *cs->statusp = resp->status = NFS4_OK; 4242 4243 out: 4244 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4245 REMOVE4res *, resp); 4246 } 4247 4248 /* 4249 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4250 * oldname and newname. 4251 * res: status. If success - CURRENT_FH unchanged, return change_info 4252 * for both from and target directories. 4253 */ 4254 /* ARGSUSED */ 4255 static void 4256 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4257 struct compound_state *cs) 4258 { 4259 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4260 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4261 int error; 4262 vnode_t *odvp; 4263 vnode_t *ndvp; 4264 vnode_t *srcvp, *targvp; 4265 struct vattr obdva, oidva, oadva; 4266 struct vattr nbdva, nidva, nadva; 4267 char *onm, *nnm; 4268 uint_t olen, nlen; 4269 rfs4_file_t *fp, *sfp; 4270 int in_crit_src, in_crit_targ; 4271 int fp_rele_grant_hold, sfp_rele_grant_hold; 4272 bslabel_t *clabel; 4273 struct sockaddr *ca; 4274 char *converted_onm = NULL; 4275 char *converted_nnm = NULL; 4276 4277 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4278 RENAME4args *, args); 4279 4280 fp = sfp = NULL; 4281 srcvp = targvp = NULL; 4282 in_crit_src = in_crit_targ = 0; 4283 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4284 4285 /* CURRENT_FH: target directory */ 4286 ndvp = cs->vp; 4287 if (ndvp == NULL) { 4288 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4289 goto out; 4290 } 4291 4292 /* SAVED_FH: from directory */ 4293 odvp = cs->saved_vp; 4294 if (odvp == NULL) { 4295 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4296 goto out; 4297 } 4298 4299 if (cs->access == CS_ACCESS_DENIED) { 4300 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4301 goto out; 4302 } 4303 4304 /* 4305 * If there is an unshared filesystem mounted on this vnode, 4306 * do not allow to rename objects in this directory. 4307 */ 4308 if (vn_ismntpt(odvp)) { 4309 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4310 goto out; 4311 } 4312 4313 /* 4314 * If there is an unshared filesystem mounted on this vnode, 4315 * do not allow to rename to this directory. 4316 */ 4317 if (vn_ismntpt(ndvp)) { 4318 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4319 goto out; 4320 } 4321 4322 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4323 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4324 goto out; 4325 } 4326 4327 if (cs->saved_exi != cs->exi) { 4328 *cs->statusp = resp->status = NFS4ERR_XDEV; 4329 goto out; 4330 } 4331 4332 if (!utf8_dir_verify(&args->oldname)) { 4333 *cs->statusp = resp->status = NFS4ERR_INVAL; 4334 goto out; 4335 } 4336 4337 if (!utf8_dir_verify(&args->newname)) { 4338 *cs->statusp = resp->status = NFS4ERR_INVAL; 4339 goto out; 4340 } 4341 4342 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4343 if (onm == NULL) { 4344 *cs->statusp = resp->status = NFS4ERR_INVAL; 4345 goto out; 4346 } 4347 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4348 nlen = MAXPATHLEN + 1; 4349 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4350 nlen); 4351 4352 if (converted_onm == NULL) { 4353 *cs->statusp = resp->status = NFS4ERR_INVAL; 4354 kmem_free(onm, olen); 4355 goto out; 4356 } 4357 4358 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4359 if (nnm == NULL) { 4360 *cs->statusp = resp->status = NFS4ERR_INVAL; 4361 if (onm != converted_onm) 4362 kmem_free(converted_onm, MAXPATHLEN + 1); 4363 kmem_free(onm, olen); 4364 goto out; 4365 } 4366 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4367 MAXPATHLEN + 1); 4368 4369 if (converted_nnm == NULL) { 4370 *cs->statusp = resp->status = NFS4ERR_INVAL; 4371 kmem_free(nnm, nlen); 4372 nnm = NULL; 4373 if (onm != converted_onm) 4374 kmem_free(converted_onm, MAXPATHLEN + 1); 4375 kmem_free(onm, olen); 4376 goto out; 4377 } 4378 4379 4380 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4381 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4382 kmem_free(onm, olen); 4383 kmem_free(nnm, nlen); 4384 goto out; 4385 } 4386 4387 4388 if (rdonly4(cs->exi, cs->vp, req)) { 4389 *cs->statusp = resp->status = NFS4ERR_ROFS; 4390 if (onm != converted_onm) 4391 kmem_free(converted_onm, MAXPATHLEN + 1); 4392 kmem_free(onm, olen); 4393 if (nnm != converted_nnm) 4394 kmem_free(converted_nnm, MAXPATHLEN + 1); 4395 kmem_free(nnm, nlen); 4396 goto out; 4397 } 4398 4399 /* check label of the target dir */ 4400 if (is_system_labeled()) { 4401 ASSERT(req->rq_label != NULL); 4402 clabel = req->rq_label; 4403 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4404 "got client label from request(1)", 4405 struct svc_req *, req); 4406 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4407 if (!do_rfs_label_check(clabel, ndvp, 4408 EQUALITY_CHECK)) { 4409 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4410 goto err_out; 4411 } 4412 } 4413 } 4414 4415 /* 4416 * Is the source a file and have a delegation? 4417 * We don't need to acquire va_seq before these lookups, if 4418 * it causes an update, cinfo.before will not match, which will 4419 * trigger a cache flush even if atomic is TRUE. 4420 */ 4421 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4422 &error, cs->cr)) { 4423 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4424 NULL)) { 4425 *cs->statusp = resp->status = NFS4ERR_DELAY; 4426 goto err_out; 4427 } 4428 } 4429 4430 if (srcvp == NULL) { 4431 *cs->statusp = resp->status = puterrno4(error); 4432 if (onm != converted_onm) 4433 kmem_free(converted_onm, MAXPATHLEN + 1); 4434 kmem_free(onm, olen); 4435 if (nnm != converted_nnm) 4436 kmem_free(converted_onm, MAXPATHLEN + 1); 4437 kmem_free(nnm, nlen); 4438 goto out; 4439 } 4440 4441 sfp_rele_grant_hold = 1; 4442 4443 /* Does the destination exist and a file and have a delegation? */ 4444 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4445 NULL, cs->cr)) { 4446 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4447 NULL)) { 4448 *cs->statusp = resp->status = NFS4ERR_DELAY; 4449 goto err_out; 4450 } 4451 } 4452 fp_rele_grant_hold = 1; 4453 4454 4455 /* Check for NBMAND lock on both source and target */ 4456 if (nbl_need_check(srcvp)) { 4457 nbl_start_crit(srcvp, RW_READER); 4458 in_crit_src = 1; 4459 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4460 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4461 goto err_out; 4462 } 4463 } 4464 4465 if (targvp && nbl_need_check(targvp)) { 4466 nbl_start_crit(targvp, RW_READER); 4467 in_crit_targ = 1; 4468 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4469 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4470 goto err_out; 4471 } 4472 } 4473 4474 /* Get source "before" change value */ 4475 obdva.va_mask = AT_CTIME|AT_SEQ; 4476 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4477 if (!error) { 4478 nbdva.va_mask = AT_CTIME|AT_SEQ; 4479 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4480 } 4481 if (error) { 4482 *cs->statusp = resp->status = puterrno4(error); 4483 goto err_out; 4484 } 4485 4486 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4487 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4488 4489 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4490 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4491 struct vattr va; 4492 vnode_t *tvp; 4493 4494 rfs4_dbe_lock(fp->dbe); 4495 tvp = fp->vp; 4496 if (tvp) 4497 VN_HOLD(tvp); 4498 rfs4_dbe_unlock(fp->dbe); 4499 4500 if (tvp) { 4501 va.va_mask = AT_NLINK; 4502 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4503 va.va_nlink == 0) { 4504 /* The file is gone and so should the state */ 4505 if (in_crit_targ) { 4506 nbl_end_crit(targvp); 4507 in_crit_targ = 0; 4508 } 4509 rfs4_close_all_state(fp); 4510 } 4511 VN_RELE(tvp); 4512 } 4513 } 4514 if (error == 0) 4515 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4516 4517 if (in_crit_src) 4518 nbl_end_crit(srcvp); 4519 if (srcvp) 4520 VN_RELE(srcvp); 4521 if (in_crit_targ) 4522 nbl_end_crit(targvp); 4523 if (targvp) 4524 VN_RELE(targvp); 4525 4526 if (sfp) { 4527 rfs4_clear_dont_grant(sfp); 4528 rfs4_file_rele(sfp); 4529 } 4530 if (fp) { 4531 rfs4_clear_dont_grant(fp); 4532 rfs4_file_rele(fp); 4533 } 4534 4535 if (converted_onm != onm) 4536 kmem_free(converted_onm, MAXPATHLEN + 1); 4537 kmem_free(onm, olen); 4538 if (converted_nnm != nnm) 4539 kmem_free(converted_nnm, MAXPATHLEN + 1); 4540 kmem_free(nnm, nlen); 4541 4542 /* 4543 * Get the initial "after" sequence number, if it fails, set to zero 4544 */ 4545 oidva.va_mask = AT_SEQ; 4546 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4547 oidva.va_seq = 0; 4548 4549 nidva.va_mask = AT_SEQ; 4550 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4551 nidva.va_seq = 0; 4552 4553 /* 4554 * Force modified data and metadata out to stable storage. 4555 */ 4556 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4557 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4558 4559 if (error) { 4560 *cs->statusp = resp->status = puterrno4(error); 4561 goto out; 4562 } 4563 4564 /* 4565 * Get "after" change values, if it fails, simply return the 4566 * before value. 4567 */ 4568 oadva.va_mask = AT_CTIME|AT_SEQ; 4569 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4570 oadva.va_ctime = obdva.va_ctime; 4571 oadva.va_seq = 0; 4572 } 4573 4574 nadva.va_mask = AT_CTIME|AT_SEQ; 4575 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4576 nadva.va_ctime = nbdva.va_ctime; 4577 nadva.va_seq = 0; 4578 } 4579 4580 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4581 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4582 4583 /* 4584 * The cinfo.atomic = TRUE only if we have 4585 * non-zero va_seq's, and it has incremented by exactly one 4586 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4587 */ 4588 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4589 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4590 resp->source_cinfo.atomic = TRUE; 4591 else 4592 resp->source_cinfo.atomic = FALSE; 4593 4594 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4595 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4596 resp->target_cinfo.atomic = TRUE; 4597 else 4598 resp->target_cinfo.atomic = FALSE; 4599 4600 #ifdef VOLATILE_FH_TEST 4601 { 4602 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4603 4604 /* 4605 * Add the renamed file handle to the volatile rename list 4606 */ 4607 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4608 /* file handles may expire on rename */ 4609 vnode_t *vp; 4610 4611 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4612 /* 4613 * Already know that nnm will be a valid string 4614 */ 4615 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4616 NULL, NULL, NULL); 4617 kmem_free(nnm, nlen); 4618 if (!error) { 4619 add_volrnm_fh(cs->exi, vp); 4620 VN_RELE(vp); 4621 } 4622 } 4623 } 4624 #endif /* VOLATILE_FH_TEST */ 4625 4626 *cs->statusp = resp->status = NFS4_OK; 4627 out: 4628 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4629 RENAME4res *, resp); 4630 return; 4631 4632 err_out: 4633 if (onm != converted_onm) 4634 kmem_free(converted_onm, MAXPATHLEN + 1); 4635 if (onm != NULL) 4636 kmem_free(onm, olen); 4637 if (nnm != converted_nnm) 4638 kmem_free(converted_nnm, MAXPATHLEN + 1); 4639 if (nnm != NULL) 4640 kmem_free(nnm, nlen); 4641 4642 if (in_crit_src) nbl_end_crit(srcvp); 4643 if (in_crit_targ) nbl_end_crit(targvp); 4644 if (targvp) VN_RELE(targvp); 4645 if (srcvp) VN_RELE(srcvp); 4646 if (sfp) { 4647 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4648 rfs4_file_rele(sfp); 4649 } 4650 if (fp) { 4651 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4652 rfs4_file_rele(fp); 4653 } 4654 4655 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4656 RENAME4res *, resp); 4657 } 4658 4659 /* ARGSUSED */ 4660 static void 4661 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4662 struct compound_state *cs) 4663 { 4664 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4665 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4666 rfs4_client_t *cp; 4667 4668 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4669 RENEW4args *, args); 4670 4671 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4672 *cs->statusp = resp->status = 4673 rfs4_check_clientid(&args->clientid, 0); 4674 goto out; 4675 } 4676 4677 if (rfs4_lease_expired(cp)) { 4678 rfs4_client_rele(cp); 4679 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4680 goto out; 4681 } 4682 4683 rfs4_update_lease(cp); 4684 4685 mutex_enter(cp->cbinfo.cb_lock); 4686 if (cp->cbinfo.cb_notified_of_cb_path_down == FALSE) { 4687 cp->cbinfo.cb_notified_of_cb_path_down = TRUE; 4688 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4689 } else { 4690 *cs->statusp = resp->status = NFS4_OK; 4691 } 4692 mutex_exit(cp->cbinfo.cb_lock); 4693 4694 rfs4_client_rele(cp); 4695 4696 out: 4697 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4698 RENEW4res *, resp); 4699 } 4700 4701 /* ARGSUSED */ 4702 static void 4703 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4704 struct compound_state *cs) 4705 { 4706 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4707 4708 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4709 4710 /* No need to check cs->access - we are not accessing any object */ 4711 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4712 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4713 goto out; 4714 } 4715 if (cs->vp != NULL) { 4716 VN_RELE(cs->vp); 4717 } 4718 cs->vp = cs->saved_vp; 4719 cs->saved_vp = NULL; 4720 cs->exi = cs->saved_exi; 4721 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4722 *cs->statusp = resp->status = NFS4_OK; 4723 cs->deleg = FALSE; 4724 4725 out: 4726 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4727 RESTOREFH4res *, resp); 4728 } 4729 4730 /* ARGSUSED */ 4731 static void 4732 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4733 struct compound_state *cs) 4734 { 4735 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4736 4737 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4738 4739 /* No need to check cs->access - we are not accessing any object */ 4740 if (cs->vp == NULL) { 4741 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4742 goto out; 4743 } 4744 if (cs->saved_vp != NULL) { 4745 VN_RELE(cs->saved_vp); 4746 } 4747 cs->saved_vp = cs->vp; 4748 VN_HOLD(cs->saved_vp); 4749 cs->saved_exi = cs->exi; 4750 /* 4751 * since SAVEFH is fairly rare, don't alloc space for its fh 4752 * unless necessary. 4753 */ 4754 if (cs->saved_fh.nfs_fh4_val == NULL) { 4755 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4756 } 4757 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4758 *cs->statusp = resp->status = NFS4_OK; 4759 4760 out: 4761 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4762 SAVEFH4res *, resp); 4763 } 4764 4765 /* 4766 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4767 * return the bitmap of attrs that were set successfully. It is also 4768 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4769 * always be called only after rfs4_do_set_attrs(). 4770 * 4771 * Verify that the attributes are same as the expected ones. sargp->vap 4772 * and sargp->sbp contain the input attributes as translated from fattr4. 4773 * 4774 * This function verifies only the attrs that correspond to a vattr or 4775 * vfsstat struct. That is because of the extra step needed to get the 4776 * corresponding system structs. Other attributes have already been set or 4777 * verified by do_rfs4_set_attrs. 4778 * 4779 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4780 */ 4781 static int 4782 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4783 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4784 { 4785 int error, ret_error = 0; 4786 int i, k; 4787 uint_t sva_mask = sargp->vap->va_mask; 4788 uint_t vbit; 4789 union nfs4_attr_u *na; 4790 uint8_t *amap; 4791 bool_t getsb = ntovp->vfsstat; 4792 4793 if (sva_mask != 0) { 4794 /* 4795 * Okay to overwrite sargp->vap because we verify based 4796 * on the incoming values. 4797 */ 4798 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4799 sargp->cs->cr, NULL); 4800 if (ret_error) { 4801 if (resp == NULL) 4802 return (ret_error); 4803 /* 4804 * Must return bitmap of successful attrs 4805 */ 4806 sva_mask = 0; /* to prevent checking vap later */ 4807 } else { 4808 /* 4809 * Some file systems clobber va_mask. it is probably 4810 * wrong of them to do so, nonethless we practice 4811 * defensive coding. 4812 * See bug id 4276830. 4813 */ 4814 sargp->vap->va_mask = sva_mask; 4815 } 4816 } 4817 4818 if (getsb) { 4819 /* 4820 * Now get the superblock and loop on the bitmap, as there is 4821 * no simple way of translating from superblock to bitmap4. 4822 */ 4823 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4824 if (ret_error) { 4825 if (resp == NULL) 4826 goto errout; 4827 getsb = FALSE; 4828 } 4829 } 4830 4831 /* 4832 * Now loop and verify each attribute which getattr returned 4833 * whether it's the same as the input. 4834 */ 4835 if (resp == NULL && !getsb && (sva_mask == 0)) 4836 goto errout; 4837 4838 na = ntovp->na; 4839 amap = ntovp->amap; 4840 k = 0; 4841 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4842 k = *amap; 4843 ASSERT(nfs4_ntov_map[k].nval == k); 4844 vbit = nfs4_ntov_map[k].vbit; 4845 4846 /* 4847 * If vattr attribute but VOP_GETATTR failed, or it's 4848 * superblock attribute but VFS_STATVFS failed, skip 4849 */ 4850 if (vbit) { 4851 if ((vbit & sva_mask) == 0) 4852 continue; 4853 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4854 continue; 4855 } 4856 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4857 if (resp != NULL) { 4858 if (error) 4859 ret_error = -1; /* not all match */ 4860 else /* update response bitmap */ 4861 *resp |= nfs4_ntov_map[k].fbit; 4862 continue; 4863 } 4864 if (error) { 4865 ret_error = -1; /* not all match */ 4866 break; 4867 } 4868 } 4869 errout: 4870 return (ret_error); 4871 } 4872 4873 /* 4874 * Decode the attribute to be set/verified. If the attr requires a sys op 4875 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4876 * call the sv_getit function for it, because the sys op hasn't yet been done. 4877 * Return 0 for success, error code if failed. 4878 * 4879 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 4880 */ 4881 static int 4882 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 4883 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 4884 { 4885 int error = 0; 4886 bool_t set_later; 4887 4888 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 4889 4890 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 4891 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 4892 /* 4893 * don't verify yet if a vattr or sb dependent attr, 4894 * because we don't have their sys values yet. 4895 * Will be done later. 4896 */ 4897 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 4898 /* 4899 * ACLs are a special case, since setting the MODE 4900 * conflicts with setting the ACL. We delay setting 4901 * the ACL until all other attributes have been set. 4902 * The ACL gets set in do_rfs4_op_setattr(). 4903 */ 4904 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 4905 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 4906 sargp, nap); 4907 if (error) { 4908 xdr_free(nfs4_ntov_map[k].xfunc, 4909 (caddr_t)nap); 4910 } 4911 } 4912 } 4913 } else { 4914 #ifdef DEBUG 4915 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 4916 "decoding attribute %d\n", k); 4917 #endif 4918 error = EINVAL; 4919 } 4920 if (!error && resp_bval && !set_later) { 4921 *resp_bval |= nfs4_ntov_map[k].fbit; 4922 } 4923 4924 return (error); 4925 } 4926 4927 /* 4928 * Set vattr based on incoming fattr4 attrs - used by setattr. 4929 * Set response mask. Ignore any values that are not writable vattr attrs. 4930 */ 4931 static nfsstat4 4932 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 4933 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 4934 nfs4_attr_cmd_t cmd) 4935 { 4936 int error = 0; 4937 int i; 4938 char *attrs = fattrp->attrlist4; 4939 uint32_t attrslen = fattrp->attrlist4_len; 4940 XDR xdr; 4941 nfsstat4 status = NFS4_OK; 4942 vnode_t *vp = cs->vp; 4943 union nfs4_attr_u *na; 4944 uint8_t *amap; 4945 4946 #ifndef lint 4947 /* 4948 * Make sure that maximum attribute number can be expressed as an 4949 * 8 bit quantity. 4950 */ 4951 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 4952 #endif 4953 4954 if (vp == NULL) { 4955 if (resp) 4956 *resp = 0; 4957 return (NFS4ERR_NOFILEHANDLE); 4958 } 4959 if (cs->access == CS_ACCESS_DENIED) { 4960 if (resp) 4961 *resp = 0; 4962 return (NFS4ERR_ACCESS); 4963 } 4964 4965 sargp->op = cmd; 4966 sargp->cs = cs; 4967 sargp->flag = 0; /* may be set later */ 4968 sargp->vap->va_mask = 0; 4969 sargp->rdattr_error = NFS4_OK; 4970 sargp->rdattr_error_req = FALSE; 4971 /* sargp->sbp is set by the caller */ 4972 4973 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 4974 4975 na = ntovp->na; 4976 amap = ntovp->amap; 4977 4978 /* 4979 * The following loop iterates on the nfs4_ntov_map checking 4980 * if the fbit is set in the requested bitmap. 4981 * If set then we process the arguments using the 4982 * rfs4_fattr4 conversion functions to populate the setattr 4983 * vattr and va_mask. Any settable attrs that are not using vattr 4984 * will be set in this loop. 4985 */ 4986 for (i = 0; i < nfs4_ntov_map_size; i++) { 4987 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 4988 continue; 4989 } 4990 /* 4991 * If setattr, must be a writable attr. 4992 * If verify/nverify, must be a readable attr. 4993 */ 4994 if ((error = (*nfs4_ntov_map[i].sv_getit)( 4995 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 4996 /* 4997 * Client tries to set/verify an 4998 * unsupported attribute, tries to set 4999 * a read only attr or verify a write 5000 * only one - error! 5001 */ 5002 break; 5003 } 5004 /* 5005 * Decode the attribute to set/verify 5006 */ 5007 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5008 &xdr, resp ? resp : NULL, na); 5009 if (error) 5010 break; 5011 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5012 na++; 5013 (ntovp->attrcnt)++; 5014 if (nfs4_ntov_map[i].vfsstat) 5015 ntovp->vfsstat = TRUE; 5016 } 5017 5018 if (error != 0) 5019 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5020 puterrno4(error)); 5021 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5022 return (status); 5023 } 5024 5025 static nfsstat4 5026 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5027 stateid4 *stateid) 5028 { 5029 int error = 0; 5030 struct nfs4_svgetit_arg sarg; 5031 bool_t trunc; 5032 5033 nfsstat4 status = NFS4_OK; 5034 cred_t *cr = cs->cr; 5035 vnode_t *vp = cs->vp; 5036 struct nfs4_ntov_table ntov; 5037 struct statvfs64 sb; 5038 struct vattr bva; 5039 struct flock64 bf; 5040 int in_crit = 0; 5041 uint_t saved_mask = 0; 5042 caller_context_t ct; 5043 5044 *resp = 0; 5045 sarg.sbp = &sb; 5046 nfs4_ntov_table_init(&ntov); 5047 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5048 NFS4ATTR_SETIT); 5049 if (status != NFS4_OK) { 5050 /* 5051 * failed set attrs 5052 */ 5053 goto done; 5054 } 5055 if ((sarg.vap->va_mask == 0) && 5056 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5057 /* 5058 * no further work to be done 5059 */ 5060 goto done; 5061 } 5062 5063 /* 5064 * If we got a request to set the ACL and the MODE, only 5065 * allow changing VSUID, VSGID, and VSVTX. Attempting 5066 * to change any other bits, along with setting an ACL, 5067 * gives NFS4ERR_INVAL. 5068 */ 5069 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5070 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5071 vattr_t va; 5072 5073 va.va_mask = AT_MODE; 5074 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5075 if (error) { 5076 status = puterrno4(error); 5077 goto done; 5078 } 5079 if ((sarg.vap->va_mode ^ va.va_mode) & 5080 ~(VSUID | VSGID | VSVTX)) { 5081 status = NFS4ERR_INVAL; 5082 goto done; 5083 } 5084 } 5085 5086 /* Check stateid only if size has been set */ 5087 if (sarg.vap->va_mask & AT_SIZE) { 5088 trunc = (sarg.vap->va_size == 0); 5089 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5090 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5091 if (status != NFS4_OK) 5092 goto done; 5093 } else { 5094 ct.cc_sysid = 0; 5095 ct.cc_pid = 0; 5096 ct.cc_caller_id = nfs4_srv_caller_id; 5097 ct.cc_flags = CC_DONTBLOCK; 5098 } 5099 5100 /* XXX start of possible race with delegations */ 5101 5102 /* 5103 * We need to specially handle size changes because it is 5104 * possible for the client to create a file with read-only 5105 * modes, but with the file opened for writing. If the client 5106 * then tries to set the file size, e.g. ftruncate(3C), 5107 * fcntl(F_FREESP), the normal access checking done in 5108 * VOP_SETATTR would prevent the client from doing it even though 5109 * it should be allowed to do so. To get around this, we do the 5110 * access checking for ourselves and use VOP_SPACE which doesn't 5111 * do the access checking. 5112 * Also the client should not be allowed to change the file 5113 * size if there is a conflicting non-blocking mandatory lock in 5114 * the region of the change. 5115 */ 5116 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5117 u_offset_t offset; 5118 ssize_t length; 5119 5120 /* 5121 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5122 * before returning, sarg.vap->va_mask is used to 5123 * generate the setattr reply bitmap. We also clear 5124 * AT_SIZE below before calling VOP_SPACE. For both 5125 * of these cases, the va_mask needs to be saved here 5126 * and restored after calling VOP_SETATTR. 5127 */ 5128 saved_mask = sarg.vap->va_mask; 5129 5130 /* 5131 * Check any possible conflict due to NBMAND locks. 5132 * Get into critical region before VOP_GETATTR, so the 5133 * size attribute is valid when checking conflicts. 5134 */ 5135 if (nbl_need_check(vp)) { 5136 nbl_start_crit(vp, RW_READER); 5137 in_crit = 1; 5138 } 5139 5140 bva.va_mask = AT_UID|AT_SIZE; 5141 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5142 status = puterrno4(error); 5143 goto done; 5144 } 5145 5146 if (in_crit) { 5147 if (sarg.vap->va_size < bva.va_size) { 5148 offset = sarg.vap->va_size; 5149 length = bva.va_size - sarg.vap->va_size; 5150 } else { 5151 offset = bva.va_size; 5152 length = sarg.vap->va_size - bva.va_size; 5153 } 5154 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5155 &ct)) { 5156 status = NFS4ERR_LOCKED; 5157 goto done; 5158 } 5159 } 5160 5161 if (crgetuid(cr) == bva.va_uid) { 5162 sarg.vap->va_mask &= ~AT_SIZE; 5163 bf.l_type = F_WRLCK; 5164 bf.l_whence = 0; 5165 bf.l_start = (off64_t)sarg.vap->va_size; 5166 bf.l_len = 0; 5167 bf.l_sysid = 0; 5168 bf.l_pid = 0; 5169 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5170 (offset_t)sarg.vap->va_size, cr, &ct); 5171 } 5172 } 5173 5174 if (!error && sarg.vap->va_mask != 0) 5175 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5176 5177 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5178 if (saved_mask & AT_SIZE) 5179 sarg.vap->va_mask |= AT_SIZE; 5180 5181 /* 5182 * If an ACL was being set, it has been delayed until now, 5183 * in order to set the mode (via the VOP_SETATTR() above) first. 5184 */ 5185 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5186 int i; 5187 5188 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5189 if (ntov.amap[i] == FATTR4_ACL) 5190 break; 5191 if (i < NFS4_MAXNUM_ATTRS) { 5192 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5193 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5194 if (error == 0) { 5195 *resp |= FATTR4_ACL_MASK; 5196 } else if (error == ENOTSUP) { 5197 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5198 status = NFS4ERR_ATTRNOTSUPP; 5199 goto done; 5200 } 5201 } else { 5202 NFS4_DEBUG(rfs4_debug, 5203 (CE_NOTE, "do_rfs4_op_setattr: " 5204 "unable to find ACL in fattr4")); 5205 error = EINVAL; 5206 } 5207 } 5208 5209 if (error) { 5210 /* check if a monitor detected a delegation conflict */ 5211 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5212 status = NFS4ERR_DELAY; 5213 else 5214 status = puterrno4(error); 5215 5216 /* 5217 * Set the response bitmap when setattr failed. 5218 * If VOP_SETATTR partially succeeded, test by doing a 5219 * VOP_GETATTR on the object and comparing the data 5220 * to the setattr arguments. 5221 */ 5222 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5223 } else { 5224 /* 5225 * Force modified metadata out to stable storage. 5226 */ 5227 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5228 /* 5229 * Set response bitmap 5230 */ 5231 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5232 } 5233 5234 /* Return early and already have a NFSv4 error */ 5235 done: 5236 /* 5237 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5238 * conversion sets both readable and writeable NFS4 attrs 5239 * for AT_MTIME and AT_ATIME. The line below masks out 5240 * unrequested attrs from the setattr result bitmap. This 5241 * is placed after the done: label to catch the ATTRNOTSUP 5242 * case. 5243 */ 5244 *resp &= fattrp->attrmask; 5245 5246 if (in_crit) 5247 nbl_end_crit(vp); 5248 5249 nfs4_ntov_table_free(&ntov, &sarg); 5250 5251 return (status); 5252 } 5253 5254 /* ARGSUSED */ 5255 static void 5256 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5257 struct compound_state *cs) 5258 { 5259 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5260 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5261 bslabel_t *clabel; 5262 5263 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5264 SETATTR4args *, args); 5265 5266 if (cs->vp == NULL) { 5267 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5268 goto out; 5269 } 5270 5271 /* 5272 * If there is an unshared filesystem mounted on this vnode, 5273 * do not allow to setattr on this vnode. 5274 */ 5275 if (vn_ismntpt(cs->vp)) { 5276 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5277 goto out; 5278 } 5279 5280 resp->attrsset = 0; 5281 5282 if (rdonly4(cs->exi, cs->vp, req)) { 5283 *cs->statusp = resp->status = NFS4ERR_ROFS; 5284 goto out; 5285 } 5286 5287 /* check label before setting attributes */ 5288 if (is_system_labeled()) { 5289 ASSERT(req->rq_label != NULL); 5290 clabel = req->rq_label; 5291 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5292 "got client label from request(1)", 5293 struct svc_req *, req); 5294 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5295 if (!do_rfs_label_check(clabel, cs->vp, 5296 EQUALITY_CHECK)) { 5297 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5298 goto out; 5299 } 5300 } 5301 } 5302 5303 *cs->statusp = resp->status = 5304 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5305 &args->stateid); 5306 5307 out: 5308 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5309 SETATTR4res *, resp); 5310 } 5311 5312 /* ARGSUSED */ 5313 static void 5314 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5315 struct compound_state *cs) 5316 { 5317 /* 5318 * verify and nverify are exactly the same, except that nverify 5319 * succeeds when some argument changed, and verify succeeds when 5320 * when none changed. 5321 */ 5322 5323 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5324 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5325 5326 int error; 5327 struct nfs4_svgetit_arg sarg; 5328 struct statvfs64 sb; 5329 struct nfs4_ntov_table ntov; 5330 5331 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5332 VERIFY4args *, args); 5333 5334 if (cs->vp == NULL) { 5335 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5336 goto out; 5337 } 5338 5339 sarg.sbp = &sb; 5340 nfs4_ntov_table_init(&ntov); 5341 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5342 &sarg, &ntov, NFS4ATTR_VERIT); 5343 if (resp->status != NFS4_OK) { 5344 /* 5345 * do_rfs4_set_attrs will try to verify systemwide attrs, 5346 * so could return -1 for "no match". 5347 */ 5348 if (resp->status == -1) 5349 resp->status = NFS4ERR_NOT_SAME; 5350 goto done; 5351 } 5352 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5353 switch (error) { 5354 case 0: 5355 resp->status = NFS4_OK; 5356 break; 5357 case -1: 5358 resp->status = NFS4ERR_NOT_SAME; 5359 break; 5360 default: 5361 resp->status = puterrno4(error); 5362 break; 5363 } 5364 done: 5365 *cs->statusp = resp->status; 5366 nfs4_ntov_table_free(&ntov, &sarg); 5367 out: 5368 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5369 VERIFY4res *, resp); 5370 } 5371 5372 /* ARGSUSED */ 5373 static void 5374 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5375 struct compound_state *cs) 5376 { 5377 /* 5378 * verify and nverify are exactly the same, except that nverify 5379 * succeeds when some argument changed, and verify succeeds when 5380 * when none changed. 5381 */ 5382 5383 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5384 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5385 5386 int error; 5387 struct nfs4_svgetit_arg sarg; 5388 struct statvfs64 sb; 5389 struct nfs4_ntov_table ntov; 5390 5391 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5392 NVERIFY4args *, args); 5393 5394 if (cs->vp == NULL) { 5395 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5396 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5397 NVERIFY4res *, resp); 5398 return; 5399 } 5400 sarg.sbp = &sb; 5401 nfs4_ntov_table_init(&ntov); 5402 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5403 &sarg, &ntov, NFS4ATTR_VERIT); 5404 if (resp->status != NFS4_OK) { 5405 /* 5406 * do_rfs4_set_attrs will try to verify systemwide attrs, 5407 * so could return -1 for "no match". 5408 */ 5409 if (resp->status == -1) 5410 resp->status = NFS4_OK; 5411 goto done; 5412 } 5413 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5414 switch (error) { 5415 case 0: 5416 resp->status = NFS4ERR_SAME; 5417 break; 5418 case -1: 5419 resp->status = NFS4_OK; 5420 break; 5421 default: 5422 resp->status = puterrno4(error); 5423 break; 5424 } 5425 done: 5426 *cs->statusp = resp->status; 5427 nfs4_ntov_table_free(&ntov, &sarg); 5428 5429 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5430 NVERIFY4res *, resp); 5431 } 5432 5433 /* 5434 * XXX - This should live in an NFS header file. 5435 */ 5436 #define MAX_IOVECS 12 5437 5438 /* ARGSUSED */ 5439 static void 5440 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5441 struct compound_state *cs) 5442 { 5443 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5444 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5445 int error; 5446 vnode_t *vp; 5447 struct vattr bva; 5448 u_offset_t rlimit; 5449 struct uio uio; 5450 struct iovec iov[MAX_IOVECS]; 5451 struct iovec *iovp; 5452 int iovcnt; 5453 int ioflag; 5454 cred_t *savecred, *cr; 5455 bool_t *deleg = &cs->deleg; 5456 nfsstat4 stat; 5457 int in_crit = 0; 5458 caller_context_t ct; 5459 5460 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5461 WRITE4args *, args); 5462 5463 vp = cs->vp; 5464 if (vp == NULL) { 5465 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5466 goto out; 5467 } 5468 if (cs->access == CS_ACCESS_DENIED) { 5469 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5470 goto out; 5471 } 5472 5473 cr = cs->cr; 5474 5475 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5476 deleg, TRUE, &ct)) != NFS4_OK) { 5477 *cs->statusp = resp->status = stat; 5478 goto out; 5479 } 5480 5481 /* 5482 * We have to enter the critical region before calling VOP_RWLOCK 5483 * to avoid a deadlock with ufs. 5484 */ 5485 if (nbl_need_check(vp)) { 5486 nbl_start_crit(vp, RW_READER); 5487 in_crit = 1; 5488 if (nbl_conflict(vp, NBL_WRITE, 5489 args->offset, args->data_len, 0, &ct)) { 5490 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5491 goto out; 5492 } 5493 } 5494 5495 bva.va_mask = AT_MODE | AT_UID; 5496 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5497 5498 /* 5499 * If we can't get the attributes, then we can't do the 5500 * right access checking. So, we'll fail the request. 5501 */ 5502 if (error) { 5503 *cs->statusp = resp->status = puterrno4(error); 5504 goto out; 5505 } 5506 5507 if (rdonly4(cs->exi, cs->vp, req)) { 5508 *cs->statusp = resp->status = NFS4ERR_ROFS; 5509 goto out; 5510 } 5511 5512 if (vp->v_type != VREG) { 5513 *cs->statusp = resp->status = 5514 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5515 goto out; 5516 } 5517 5518 if (crgetuid(cr) != bva.va_uid && 5519 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5520 *cs->statusp = resp->status = puterrno4(error); 5521 goto out; 5522 } 5523 5524 if (MANDLOCK(vp, bva.va_mode)) { 5525 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5526 goto out; 5527 } 5528 5529 if (args->data_len == 0) { 5530 *cs->statusp = resp->status = NFS4_OK; 5531 resp->count = 0; 5532 resp->committed = args->stable; 5533 resp->writeverf = Write4verf; 5534 goto out; 5535 } 5536 5537 if (args->mblk != NULL) { 5538 mblk_t *m; 5539 uint_t bytes, round_len; 5540 5541 iovcnt = 0; 5542 bytes = 0; 5543 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5544 for (m = args->mblk; 5545 m != NULL && bytes < round_len; 5546 m = m->b_cont) { 5547 iovcnt++; 5548 bytes += MBLKL(m); 5549 } 5550 #ifdef DEBUG 5551 /* should have ended on an mblk boundary */ 5552 if (bytes != round_len) { 5553 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5554 bytes, round_len, args->data_len); 5555 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5556 (void *)args->mblk, (void *)m); 5557 ASSERT(bytes == round_len); 5558 } 5559 #endif 5560 if (iovcnt <= MAX_IOVECS) { 5561 iovp = iov; 5562 } else { 5563 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5564 } 5565 mblk_to_iov(args->mblk, iovcnt, iovp); 5566 } else if (args->rlist != NULL) { 5567 iovcnt = 1; 5568 iovp = iov; 5569 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5570 iovp->iov_len = args->data_len; 5571 } else { 5572 iovcnt = 1; 5573 iovp = iov; 5574 iovp->iov_base = args->data_val; 5575 iovp->iov_len = args->data_len; 5576 } 5577 5578 uio.uio_iov = iovp; 5579 uio.uio_iovcnt = iovcnt; 5580 5581 uio.uio_segflg = UIO_SYSSPACE; 5582 uio.uio_extflg = UIO_COPY_DEFAULT; 5583 uio.uio_loffset = args->offset; 5584 uio.uio_resid = args->data_len; 5585 uio.uio_llimit = curproc->p_fsz_ctl; 5586 rlimit = uio.uio_llimit - args->offset; 5587 if (rlimit < (u_offset_t)uio.uio_resid) 5588 uio.uio_resid = (int)rlimit; 5589 5590 if (args->stable == UNSTABLE4) 5591 ioflag = 0; 5592 else if (args->stable == FILE_SYNC4) 5593 ioflag = FSYNC; 5594 else if (args->stable == DATA_SYNC4) 5595 ioflag = FDSYNC; 5596 else { 5597 if (iovp != iov) 5598 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5599 *cs->statusp = resp->status = NFS4ERR_INVAL; 5600 goto out; 5601 } 5602 5603 /* 5604 * We're changing creds because VM may fault and we need 5605 * the cred of the current thread to be used if quota 5606 * checking is enabled. 5607 */ 5608 savecred = curthread->t_cred; 5609 curthread->t_cred = cr; 5610 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5611 curthread->t_cred = savecred; 5612 5613 if (iovp != iov) 5614 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5615 5616 if (error) { 5617 *cs->statusp = resp->status = puterrno4(error); 5618 goto out; 5619 } 5620 5621 *cs->statusp = resp->status = NFS4_OK; 5622 resp->count = args->data_len - uio.uio_resid; 5623 5624 if (ioflag == 0) 5625 resp->committed = UNSTABLE4; 5626 else 5627 resp->committed = FILE_SYNC4; 5628 5629 resp->writeverf = Write4verf; 5630 5631 out: 5632 if (in_crit) 5633 nbl_end_crit(vp); 5634 5635 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5636 WRITE4res *, resp); 5637 } 5638 5639 5640 /* XXX put in a header file */ 5641 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5642 5643 void 5644 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5645 struct svc_req *req, cred_t *cr, int *rv) 5646 { 5647 uint_t i; 5648 struct compound_state cs; 5649 5650 if (rv != NULL) 5651 *rv = 0; 5652 rfs4_init_compound_state(&cs); 5653 /* 5654 * Form a reply tag by copying over the reqeuest tag. 5655 */ 5656 resp->tag.utf8string_val = 5657 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5658 resp->tag.utf8string_len = args->tag.utf8string_len; 5659 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5660 resp->tag.utf8string_len); 5661 5662 cs.statusp = &resp->status; 5663 cs.req = req; 5664 5665 /* 5666 * XXX for now, minorversion should be zero 5667 */ 5668 if (args->minorversion != NFS4_MINORVERSION) { 5669 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5670 &cs, COMPOUND4args *, args); 5671 resp->array_len = 0; 5672 resp->array = NULL; 5673 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5674 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5675 &cs, COMPOUND4res *, resp); 5676 return; 5677 } 5678 5679 ASSERT(exi == NULL); 5680 ASSERT(cr == NULL); 5681 5682 cr = crget(); 5683 ASSERT(cr != NULL); 5684 5685 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5686 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5687 &cs, COMPOUND4args *, args); 5688 crfree(cr); 5689 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5690 &cs, COMPOUND4res *, resp); 5691 svcerr_badcred(req->rq_xprt); 5692 if (rv != NULL) 5693 *rv = 1; 5694 return; 5695 } 5696 resp->array_len = args->array_len; 5697 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5698 KM_SLEEP); 5699 5700 cs.basecr = cr; 5701 5702 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5703 COMPOUND4args *, args); 5704 5705 /* 5706 * For now, NFS4 compound processing must be protected by 5707 * exported_lock because it can access more than one exportinfo 5708 * per compound and share/unshare can now change multiple 5709 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5710 * per proc (excluding public exinfo), and exi_count design 5711 * is sufficient to protect concurrent execution of NFS2/3 5712 * ops along with unexport. This lock will be removed as 5713 * part of the NFSv4 phase 2 namespace redesign work. 5714 */ 5715 rw_enter(&exported_lock, RW_READER); 5716 5717 /* 5718 * If this is the first compound we've seen, we need to start all 5719 * new instances' grace periods. 5720 */ 5721 if (rfs4_seen_first_compound == 0) { 5722 rfs4_grace_start_new(); 5723 /* 5724 * This must be set after rfs4_grace_start_new(), otherwise 5725 * another thread could proceed past here before the former 5726 * is finished. 5727 */ 5728 rfs4_seen_first_compound = 1; 5729 } 5730 5731 for (i = 0; i < args->array_len && cs.cont; i++) { 5732 nfs_argop4 *argop; 5733 nfs_resop4 *resop; 5734 uint_t op; 5735 5736 argop = &args->array[i]; 5737 resop = &resp->array[i]; 5738 resop->resop = argop->argop; 5739 op = (uint_t)resop->resop; 5740 5741 if (op < rfsv4disp_cnt) { 5742 /* 5743 * Count the individual ops here; NULL and COMPOUND 5744 * are counted in common_dispatch() 5745 */ 5746 rfsproccnt_v4_ptr[op].value.ui64++; 5747 5748 NFS4_DEBUG(rfs4_debug > 1, 5749 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5750 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5751 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5752 rfs4_op_string[op], *cs.statusp)); 5753 if (*cs.statusp != NFS4_OK) 5754 cs.cont = FALSE; 5755 } else { 5756 /* 5757 * This is effectively dead code since XDR code 5758 * will have already returned BADXDR if op doesn't 5759 * decode to legal value. This only done for a 5760 * day when XDR code doesn't verify v4 opcodes. 5761 */ 5762 op = OP_ILLEGAL; 5763 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5764 5765 rfs4_op_illegal(argop, resop, req, &cs); 5766 cs.cont = FALSE; 5767 } 5768 5769 /* 5770 * If not at last op, and if we are to stop, then 5771 * compact the results array. 5772 */ 5773 if ((i + 1) < args->array_len && !cs.cont) { 5774 nfs_resop4 *new_res = kmem_alloc( 5775 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5776 bcopy(resp->array, 5777 new_res, (i+1) * sizeof (nfs_resop4)); 5778 kmem_free(resp->array, 5779 args->array_len * sizeof (nfs_resop4)); 5780 5781 resp->array_len = i + 1; 5782 resp->array = new_res; 5783 } 5784 } 5785 5786 rw_exit(&exported_lock); 5787 5788 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5789 COMPOUND4res *, resp); 5790 5791 if (cs.vp) 5792 VN_RELE(cs.vp); 5793 if (cs.saved_vp) 5794 VN_RELE(cs.saved_vp); 5795 if (cs.saved_fh.nfs_fh4_val) 5796 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5797 5798 if (cs.basecr) 5799 crfree(cs.basecr); 5800 if (cs.cr) 5801 crfree(cs.cr); 5802 /* 5803 * done with this compound request, free the label 5804 */ 5805 5806 if (req->rq_label != NULL) { 5807 kmem_free(req->rq_label, sizeof (bslabel_t)); 5808 req->rq_label = NULL; 5809 } 5810 } 5811 5812 /* 5813 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5814 * XXX zero out the tag and array values. Need to investigate why the 5815 * XXX calls occur, but at least prevent the panic for now. 5816 */ 5817 void 5818 rfs4_compound_free(COMPOUND4res *resp) 5819 { 5820 uint_t i; 5821 5822 if (resp->tag.utf8string_val) { 5823 UTF8STRING_FREE(resp->tag) 5824 } 5825 5826 for (i = 0; i < resp->array_len; i++) { 5827 nfs_resop4 *resop; 5828 uint_t op; 5829 5830 resop = &resp->array[i]; 5831 op = (uint_t)resop->resop; 5832 if (op < rfsv4disp_cnt) { 5833 (*rfsv4disptab[op].dis_resfree)(resop); 5834 } 5835 } 5836 if (resp->array != NULL) { 5837 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5838 } 5839 } 5840 5841 /* 5842 * Process the value of the compound request rpc flags, as a bit-AND 5843 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5844 */ 5845 void 5846 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5847 { 5848 int i; 5849 int flag = RPC_ALL; 5850 5851 for (i = 0; flag && i < args->array_len; i++) { 5852 uint_t op; 5853 5854 op = (uint_t)args->array[i].argop; 5855 5856 if (op < rfsv4disp_cnt) 5857 flag &= rfsv4disptab[op].dis_flags; 5858 else 5859 flag = 0; 5860 } 5861 *flagp = flag; 5862 } 5863 5864 nfsstat4 5865 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5866 { 5867 nfsstat4 e; 5868 5869 rfs4_dbe_lock(cp->dbe); 5870 5871 if (cp->sysidt != LM_NOSYSID) { 5872 *sp = cp->sysidt; 5873 e = NFS4_OK; 5874 5875 } else if ((cp->sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 5876 *sp = cp->sysidt; 5877 e = NFS4_OK; 5878 5879 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 5880 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 5881 } else 5882 e = NFS4ERR_DELAY; 5883 5884 rfs4_dbe_unlock(cp->dbe); 5885 return (e); 5886 } 5887 5888 #if defined(DEBUG) && ! defined(lint) 5889 static void lock_print(char *str, int operation, struct flock64 *flk) 5890 { 5891 char *op, *type; 5892 5893 switch (operation) { 5894 case F_GETLK: op = "F_GETLK"; 5895 break; 5896 case F_SETLK: op = "F_SETLK"; 5897 break; 5898 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 5899 break; 5900 default: op = "F_UNKNOWN"; 5901 break; 5902 } 5903 switch (flk->l_type) { 5904 case F_UNLCK: type = "F_UNLCK"; 5905 break; 5906 case F_RDLCK: type = "F_RDLCK"; 5907 break; 5908 case F_WRLCK: type = "F_WRLCK"; 5909 break; 5910 default: type = "F_UNKNOWN"; 5911 break; 5912 } 5913 5914 ASSERT(flk->l_whence == 0); 5915 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 5916 str, op, type, (longlong_t)flk->l_start, 5917 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 5918 } 5919 5920 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 5921 #else 5922 #define LOCK_PRINT(d, s, t, f) 5923 #endif 5924 5925 /*ARGSUSED*/ 5926 static bool_t 5927 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 5928 { 5929 return (TRUE); 5930 } 5931 5932 /* 5933 * Look up the pathname using the vp in cs as the directory vnode. 5934 * cs->vp will be the vnode for the file on success 5935 */ 5936 5937 static nfsstat4 5938 rfs4_lookup(component4 *component, struct svc_req *req, 5939 struct compound_state *cs) 5940 { 5941 char *nm; 5942 uint32_t len; 5943 nfsstat4 status; 5944 5945 if (cs->vp == NULL) { 5946 return (NFS4ERR_NOFILEHANDLE); 5947 } 5948 if (cs->vp->v_type != VDIR) { 5949 return (NFS4ERR_NOTDIR); 5950 } 5951 5952 if (!utf8_dir_verify(component)) 5953 return (NFS4ERR_INVAL); 5954 5955 nm = utf8_to_fn(component, &len, NULL); 5956 if (nm == NULL) { 5957 return (NFS4ERR_INVAL); 5958 } 5959 5960 if (len > MAXNAMELEN) { 5961 kmem_free(nm, len); 5962 return (NFS4ERR_NAMETOOLONG); 5963 } 5964 5965 status = do_rfs4_op_lookup(nm, len, req, cs); 5966 5967 kmem_free(nm, len); 5968 5969 return (status); 5970 } 5971 5972 static nfsstat4 5973 rfs4_lookupfile(component4 *component, struct svc_req *req, 5974 struct compound_state *cs, uint32_t access, 5975 change_info4 *cinfo) 5976 { 5977 nfsstat4 status; 5978 vnode_t *dvp = cs->vp; 5979 vattr_t bva, ava, fva; 5980 int error; 5981 5982 /* Get "before" change value */ 5983 bva.va_mask = AT_CTIME|AT_SEQ; 5984 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 5985 if (error) 5986 return (puterrno4(error)); 5987 5988 /* rfs4_lookup may VN_RELE directory */ 5989 VN_HOLD(dvp); 5990 5991 status = rfs4_lookup(component, req, cs); 5992 if (status != NFS4_OK) { 5993 VN_RELE(dvp); 5994 return (status); 5995 } 5996 5997 /* 5998 * Get "after" change value, if it fails, simply return the 5999 * before value. 6000 */ 6001 ava.va_mask = AT_CTIME|AT_SEQ; 6002 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6003 ava.va_ctime = bva.va_ctime; 6004 ava.va_seq = 0; 6005 } 6006 VN_RELE(dvp); 6007 6008 /* 6009 * Validate the file is a file 6010 */ 6011 fva.va_mask = AT_TYPE|AT_MODE; 6012 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6013 if (error) 6014 return (puterrno4(error)); 6015 6016 if (fva.va_type != VREG) { 6017 if (fva.va_type == VDIR) 6018 return (NFS4ERR_ISDIR); 6019 if (fva.va_type == VLNK) 6020 return (NFS4ERR_SYMLINK); 6021 return (NFS4ERR_INVAL); 6022 } 6023 6024 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6025 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6026 6027 /* 6028 * It is undefined if VOP_LOOKUP will change va_seq, so 6029 * cinfo.atomic = TRUE only if we have 6030 * non-zero va_seq's, and they have not changed. 6031 */ 6032 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6033 cinfo->atomic = TRUE; 6034 else 6035 cinfo->atomic = FALSE; 6036 6037 /* Check for mandatory locking */ 6038 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6039 return (check_open_access(access, cs, req)); 6040 } 6041 6042 static nfsstat4 6043 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6044 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6045 { 6046 int error; 6047 nfsstat4 status = NFS4_OK; 6048 vattr_t va; 6049 6050 tryagain: 6051 6052 /* 6053 * The file open mode used is VWRITE. If the client needs 6054 * some other semantic, then it should do the access checking 6055 * itself. It would have been nice to have the file open mode 6056 * passed as part of the arguments. 6057 */ 6058 6059 *created = TRUE; 6060 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6061 6062 if (error) { 6063 *created = FALSE; 6064 6065 /* 6066 * If we got something other than file already exists 6067 * then just return this error. Otherwise, we got 6068 * EEXIST. If we were doing a GUARDED create, then 6069 * just return this error. Otherwise, we need to 6070 * make sure that this wasn't a duplicate of an 6071 * exclusive create request. 6072 * 6073 * The assumption is made that a non-exclusive create 6074 * request will never return EEXIST. 6075 */ 6076 6077 if (error != EEXIST || mode == GUARDED4) { 6078 status = puterrno4(error); 6079 return (status); 6080 } 6081 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6082 NULL, NULL, NULL); 6083 6084 if (error) { 6085 /* 6086 * We couldn't find the file that we thought that 6087 * we just created. So, we'll just try creating 6088 * it again. 6089 */ 6090 if (error == ENOENT) 6091 goto tryagain; 6092 6093 status = puterrno4(error); 6094 return (status); 6095 } 6096 6097 if (mode == UNCHECKED4) { 6098 /* existing object must be regular file */ 6099 if ((*vpp)->v_type != VREG) { 6100 if ((*vpp)->v_type == VDIR) 6101 status = NFS4ERR_ISDIR; 6102 else if ((*vpp)->v_type == VLNK) 6103 status = NFS4ERR_SYMLINK; 6104 else 6105 status = NFS4ERR_INVAL; 6106 VN_RELE(*vpp); 6107 return (status); 6108 } 6109 6110 return (NFS4_OK); 6111 } 6112 6113 /* Check for duplicate request */ 6114 ASSERT(mtime != 0); 6115 va.va_mask = AT_MTIME; 6116 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6117 if (!error) { 6118 /* We found the file */ 6119 if (va.va_mtime.tv_sec != mtime->tv_sec || 6120 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6121 /* but its not our creation */ 6122 VN_RELE(*vpp); 6123 return (NFS4ERR_EXIST); 6124 } 6125 *created = TRUE; /* retrans of create == created */ 6126 return (NFS4_OK); 6127 } 6128 VN_RELE(*vpp); 6129 return (NFS4ERR_EXIST); 6130 } 6131 6132 return (NFS4_OK); 6133 } 6134 6135 static nfsstat4 6136 check_open_access(uint32_t access, 6137 struct compound_state *cs, struct svc_req *req) 6138 { 6139 int error; 6140 vnode_t *vp; 6141 bool_t readonly; 6142 cred_t *cr = cs->cr; 6143 6144 /* For now we don't allow mandatory locking as per V2/V3 */ 6145 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6146 return (NFS4ERR_ACCESS); 6147 } 6148 6149 vp = cs->vp; 6150 ASSERT(cr != NULL && vp->v_type == VREG); 6151 6152 /* 6153 * If the file system is exported read only and we are trying 6154 * to open for write, then return NFS4ERR_ROFS 6155 */ 6156 6157 readonly = rdonly4(cs->exi, cs->vp, req); 6158 6159 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6160 return (NFS4ERR_ROFS); 6161 6162 if (access & OPEN4_SHARE_ACCESS_READ) { 6163 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6164 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6165 return (NFS4ERR_ACCESS); 6166 } 6167 } 6168 6169 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6170 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6171 if (error) 6172 return (NFS4ERR_ACCESS); 6173 } 6174 6175 return (NFS4_OK); 6176 } 6177 6178 static nfsstat4 6179 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6180 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6181 { 6182 struct nfs4_svgetit_arg sarg; 6183 struct nfs4_ntov_table ntov; 6184 6185 bool_t ntov_table_init = FALSE; 6186 struct statvfs64 sb; 6187 nfsstat4 status; 6188 vnode_t *vp; 6189 vattr_t bva, ava, iva, cva, *vap; 6190 vnode_t *dvp; 6191 timespec32_t *mtime; 6192 char *nm = NULL; 6193 uint_t buflen; 6194 bool_t created; 6195 bool_t setsize = FALSE; 6196 len_t reqsize; 6197 int error; 6198 bool_t trunc; 6199 caller_context_t ct; 6200 component4 *component; 6201 bslabel_t *clabel; 6202 struct sockaddr *ca; 6203 char *name = NULL; 6204 6205 sarg.sbp = &sb; 6206 6207 dvp = cs->vp; 6208 6209 /* Check if the file system is read only */ 6210 if (rdonly4(cs->exi, dvp, req)) 6211 return (NFS4ERR_ROFS); 6212 6213 /* check the label of including directory */ 6214 if (is_system_labeled()) { 6215 ASSERT(req->rq_label != NULL); 6216 clabel = req->rq_label; 6217 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6218 "got client label from request(1)", 6219 struct svc_req *, req); 6220 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6221 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK)) { 6222 return (NFS4ERR_ACCESS); 6223 } 6224 } 6225 } 6226 6227 /* 6228 * Get the last component of path name in nm. cs will reference 6229 * the including directory on success. 6230 */ 6231 component = &args->open_claim4_u.file; 6232 if (!utf8_dir_verify(component)) 6233 return (NFS4ERR_INVAL); 6234 6235 nm = utf8_to_fn(component, &buflen, NULL); 6236 6237 if (nm == NULL) 6238 return (NFS4ERR_RESOURCE); 6239 6240 if (buflen > MAXNAMELEN) { 6241 kmem_free(nm, buflen); 6242 return (NFS4ERR_NAMETOOLONG); 6243 } 6244 6245 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6246 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6247 if (error) { 6248 kmem_free(nm, buflen); 6249 return (puterrno4(error)); 6250 } 6251 6252 if (bva.va_type != VDIR) { 6253 kmem_free(nm, buflen); 6254 return (NFS4ERR_NOTDIR); 6255 } 6256 6257 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6258 6259 switch (args->mode) { 6260 case GUARDED4: 6261 /*FALLTHROUGH*/ 6262 case UNCHECKED4: 6263 nfs4_ntov_table_init(&ntov); 6264 ntov_table_init = TRUE; 6265 6266 *attrset = 0; 6267 status = do_rfs4_set_attrs(attrset, 6268 &args->createhow4_u.createattrs, 6269 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6270 6271 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6272 sarg.vap->va_type != VREG) { 6273 if (sarg.vap->va_type == VDIR) 6274 status = NFS4ERR_ISDIR; 6275 else if (sarg.vap->va_type == VLNK) 6276 status = NFS4ERR_SYMLINK; 6277 else 6278 status = NFS4ERR_INVAL; 6279 } 6280 6281 if (status != NFS4_OK) { 6282 kmem_free(nm, buflen); 6283 nfs4_ntov_table_free(&ntov, &sarg); 6284 *attrset = 0; 6285 return (status); 6286 } 6287 6288 vap = sarg.vap; 6289 vap->va_type = VREG; 6290 vap->va_mask |= AT_TYPE; 6291 6292 if ((vap->va_mask & AT_MODE) == 0) { 6293 vap->va_mask |= AT_MODE; 6294 vap->va_mode = (mode_t)0600; 6295 } 6296 6297 if (vap->va_mask & AT_SIZE) { 6298 6299 /* Disallow create with a non-zero size */ 6300 6301 if ((reqsize = sarg.vap->va_size) != 0) { 6302 kmem_free(nm, buflen); 6303 nfs4_ntov_table_free(&ntov, &sarg); 6304 *attrset = 0; 6305 return (NFS4ERR_INVAL); 6306 } 6307 setsize = TRUE; 6308 } 6309 break; 6310 6311 case EXCLUSIVE4: 6312 /* prohibit EXCL create of named attributes */ 6313 if (dvp->v_flag & V_XATTRDIR) { 6314 kmem_free(nm, buflen); 6315 *attrset = 0; 6316 return (NFS4ERR_INVAL); 6317 } 6318 6319 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6320 cva.va_type = VREG; 6321 /* 6322 * Ensure no time overflows. Assumes underlying 6323 * filesystem supports at least 32 bits. 6324 * Truncate nsec to usec resolution to allow valid 6325 * compares even if the underlying filesystem truncates. 6326 */ 6327 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6328 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6329 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6330 cva.va_mode = (mode_t)0; 6331 vap = &cva; 6332 break; 6333 } 6334 6335 /* If necessary, convert to UTF-8 for illbehaved clients */ 6336 6337 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6338 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6339 MAXPATHLEN + 1); 6340 6341 if (name == NULL) { 6342 kmem_free(nm, buflen); 6343 return (NFS4ERR_SERVERFAULT); 6344 } 6345 6346 status = create_vnode(dvp, name, vap, args->mode, mtime, 6347 cs->cr, &vp, &created); 6348 if (nm != name) 6349 kmem_free(name, MAXPATHLEN + 1); 6350 kmem_free(nm, buflen); 6351 6352 if (status != NFS4_OK) { 6353 if (ntov_table_init) 6354 nfs4_ntov_table_free(&ntov, &sarg); 6355 *attrset = 0; 6356 return (status); 6357 } 6358 6359 trunc = (setsize && !created); 6360 6361 if (args->mode != EXCLUSIVE4) { 6362 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6363 6364 /* 6365 * True verification that object was created with correct 6366 * attrs is impossible. The attrs could have been changed 6367 * immediately after object creation. If attributes did 6368 * not verify, the only recourse for the server is to 6369 * destroy the object. Maybe if some attrs (like gid) 6370 * are set incorrectly, the object should be destroyed; 6371 * however, seems bad as a default policy. Do we really 6372 * want to destroy an object over one of the times not 6373 * verifying correctly? For these reasons, the server 6374 * currently sets bits in attrset for createattrs 6375 * that were set; however, no verification is done. 6376 * 6377 * vmask_to_nmask accounts for vattr bits set on create 6378 * [do_rfs4_set_attrs() only sets resp bits for 6379 * non-vattr/vfs bits.] 6380 * Mask off any bits we set by default so as not to return 6381 * more attrset bits than were requested in createattrs 6382 */ 6383 if (created) { 6384 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6385 *attrset &= createmask; 6386 } else { 6387 /* 6388 * We did not create the vnode (we tried but it 6389 * already existed). In this case, the only createattr 6390 * that the spec allows the server to set is size, 6391 * and even then, it can only be set if it is 0. 6392 */ 6393 *attrset = 0; 6394 if (trunc) 6395 *attrset = FATTR4_SIZE_MASK; 6396 } 6397 } 6398 if (ntov_table_init) 6399 nfs4_ntov_table_free(&ntov, &sarg); 6400 6401 /* 6402 * Get the initial "after" sequence number, if it fails, 6403 * set to zero, time to before. 6404 */ 6405 iva.va_mask = AT_CTIME|AT_SEQ; 6406 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6407 iva.va_seq = 0; 6408 iva.va_ctime = bva.va_ctime; 6409 } 6410 6411 /* 6412 * create_vnode attempts to create the file exclusive, 6413 * if it already exists the VOP_CREATE will fail and 6414 * may not increase va_seq. It is atomic if 6415 * we haven't changed the directory, but if it has changed 6416 * we don't know what changed it. 6417 */ 6418 if (!created) { 6419 if (bva.va_seq && iva.va_seq && 6420 bva.va_seq == iva.va_seq) 6421 cinfo->atomic = TRUE; 6422 else 6423 cinfo->atomic = FALSE; 6424 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6425 } else { 6426 /* 6427 * The entry was created, we need to sync the 6428 * directory metadata. 6429 */ 6430 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6431 6432 /* 6433 * Get "after" change value, if it fails, simply return the 6434 * before value. 6435 */ 6436 ava.va_mask = AT_CTIME|AT_SEQ; 6437 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6438 ava.va_ctime = bva.va_ctime; 6439 ava.va_seq = 0; 6440 } 6441 6442 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6443 6444 /* 6445 * The cinfo->atomic = TRUE only if we have 6446 * non-zero va_seq's, and it has incremented by exactly one 6447 * during the create_vnode and it didn't 6448 * change during the VOP_FSYNC. 6449 */ 6450 if (bva.va_seq && iva.va_seq && ava.va_seq && 6451 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6452 cinfo->atomic = TRUE; 6453 else 6454 cinfo->atomic = FALSE; 6455 } 6456 6457 /* Check for mandatory locking and that the size gets set. */ 6458 cva.va_mask = AT_MODE; 6459 if (setsize) 6460 cva.va_mask |= AT_SIZE; 6461 6462 /* Assume the worst */ 6463 cs->mandlock = TRUE; 6464 6465 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6466 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6467 6468 /* 6469 * Truncate the file if necessary; this would be 6470 * the case for create over an existing file. 6471 */ 6472 6473 if (trunc) { 6474 int in_crit = 0; 6475 rfs4_file_t *fp; 6476 bool_t create = FALSE; 6477 6478 /* 6479 * We are writing over an existing file. 6480 * Check to see if we need to recall a delegation. 6481 */ 6482 rfs4_hold_deleg_policy(); 6483 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6484 if (rfs4_check_delegated_byfp(FWRITE, fp, 6485 (reqsize == 0), FALSE, FALSE, &clientid)) { 6486 rfs4_file_rele(fp); 6487 rfs4_rele_deleg_policy(); 6488 VN_RELE(vp); 6489 *attrset = 0; 6490 return (NFS4ERR_DELAY); 6491 } 6492 rfs4_file_rele(fp); 6493 } 6494 rfs4_rele_deleg_policy(); 6495 6496 if (nbl_need_check(vp)) { 6497 in_crit = 1; 6498 6499 ASSERT(reqsize == 0); 6500 6501 nbl_start_crit(vp, RW_READER); 6502 if (nbl_conflict(vp, NBL_WRITE, 0, 6503 cva.va_size, 0, NULL)) { 6504 in_crit = 0; 6505 nbl_end_crit(vp); 6506 VN_RELE(vp); 6507 *attrset = 0; 6508 return (NFS4ERR_ACCESS); 6509 } 6510 } 6511 ct.cc_sysid = 0; 6512 ct.cc_pid = 0; 6513 ct.cc_caller_id = nfs4_srv_caller_id; 6514 ct.cc_flags = CC_DONTBLOCK; 6515 6516 cva.va_mask = AT_SIZE; 6517 cva.va_size = reqsize; 6518 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6519 if (in_crit) 6520 nbl_end_crit(vp); 6521 } 6522 } 6523 6524 error = makefh4(&cs->fh, vp, cs->exi); 6525 6526 /* 6527 * Force modified data and metadata out to stable storage. 6528 */ 6529 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6530 6531 if (error) { 6532 VN_RELE(vp); 6533 *attrset = 0; 6534 return (puterrno4(error)); 6535 } 6536 6537 /* if parent dir is attrdir, set namedattr fh flag */ 6538 if (dvp->v_flag & V_XATTRDIR) 6539 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6540 6541 if (cs->vp) 6542 VN_RELE(cs->vp); 6543 6544 cs->vp = vp; 6545 6546 /* 6547 * if we did not create the file, we will need to check 6548 * the access bits on the file 6549 */ 6550 6551 if (!created) { 6552 if (setsize) 6553 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6554 status = check_open_access(args->share_access, cs, req); 6555 if (status != NFS4_OK) 6556 *attrset = 0; 6557 } 6558 return (status); 6559 } 6560 6561 /*ARGSUSED*/ 6562 static void 6563 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6564 rfs4_openowner_t *oo, delegreq_t deleg, 6565 uint32_t access, uint32_t deny, 6566 OPEN4res *resp, int deleg_cur) 6567 { 6568 /* XXX Currently not using req */ 6569 rfs4_state_t *state; 6570 rfs4_file_t *file; 6571 bool_t screate = TRUE; 6572 bool_t fcreate = TRUE; 6573 uint32_t amodes; 6574 uint32_t dmodes; 6575 rfs4_deleg_state_t *dsp; 6576 struct shrlock shr; 6577 struct shr_locowner shr_loco; 6578 sysid_t sysid; 6579 nfsstat4 status; 6580 caller_context_t ct; 6581 int fflags = 0; 6582 int recall = 0; 6583 int err; 6584 int cmd; 6585 6586 /* get the file struct and hold a lock on it during initial open */ 6587 file = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6588 if (file == NULL) { 6589 NFS4_DEBUG(rfs4_debug, 6590 (CE_NOTE, "rfs4_do_open: can't find file")); 6591 resp->status = NFS4ERR_SERVERFAULT; 6592 return; 6593 } 6594 6595 state = rfs4_findstate_by_owner_file(oo, file, &screate); 6596 if (state == NULL) { 6597 NFS4_DEBUG(rfs4_debug, 6598 (CE_NOTE, "rfs4_do_open: can't find state")); 6599 resp->status = NFS4ERR_RESOURCE; 6600 /* No need to keep any reference */ 6601 rfs4_file_rele_withunlock(file); 6602 return; 6603 } 6604 6605 /* try to get the sysid before continuing */ 6606 if ((status = rfs4_client_sysid(oo->client, &sysid)) != NFS4_OK) { 6607 resp->status = status; 6608 rfs4_file_rele(file); 6609 /* Not a fully formed open; "close" it */ 6610 if (screate == TRUE) 6611 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6612 rfs4_state_rele(state); 6613 return; 6614 } 6615 6616 /* Calculate the fflags for this OPEN. */ 6617 if (access & OPEN4_SHARE_ACCESS_READ) 6618 fflags |= FREAD; 6619 if (access & OPEN4_SHARE_ACCESS_WRITE) 6620 fflags |= FWRITE; 6621 6622 /* 6623 * Calculate the new deny and access mode that this open is adding to 6624 * the file for this open owner; 6625 */ 6626 dmodes = (deny & ~state->share_deny); 6627 amodes = (access & ~state->share_access); 6628 6629 /* 6630 * Check to see the client has already sent an open for this 6631 * open owner on this file with the same share/deny modes. 6632 * If so, we don't need to check for a conflict and we don't 6633 * need to add another shrlock. If not, then we need to 6634 * check for conflicts in deny and access before checking for 6635 * conflicts in delegation. We don't want to recall a 6636 * delegation based on an open that will eventually fail based 6637 * on shares modes. 6638 */ 6639 6640 if (dmodes || amodes) { 6641 shr.s_access = (short)access; 6642 shr.s_deny = (short)deny; 6643 shr.s_pid = rfs4_dbe_getid(oo->dbe); 6644 shr.s_sysid = sysid; 6645 shr_loco.sl_pid = shr.s_pid; 6646 shr_loco.sl_id = shr.s_sysid; 6647 shr.s_owner = (caddr_t)&shr_loco; 6648 shr.s_own_len = sizeof (shr_loco); 6649 6650 cmd = nbl_need_check(cs->vp) ? F_SHARE_NBMAND : F_SHARE; 6651 if ((err = vop_shrlock(cs->vp, cmd, &shr, fflags)) != 0) { 6652 6653 resp->status = err == EAGAIN ? 6654 NFS4ERR_SHARE_DENIED : puterrno4(err); 6655 6656 rfs4_file_rele(file); 6657 /* Not a fully formed open; "close" it */ 6658 if (screate == TRUE) 6659 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6660 rfs4_state_rele(state); 6661 return; 6662 } 6663 } 6664 6665 rfs4_dbe_lock(state->dbe); 6666 rfs4_dbe_lock(file->dbe); 6667 6668 /* 6669 * Check to see if this file is delegated and if so, if a 6670 * recall needs to be done. 6671 */ 6672 if (rfs4_check_recall(state, access)) { 6673 rfs4_dbe_unlock(file->dbe); 6674 rfs4_dbe_unlock(state->dbe); 6675 rfs4_recall_deleg(file, FALSE, state->owner->client); 6676 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6677 rfs4_dbe_lock(state->dbe); 6678 rfs4_dbe_lock(file->dbe); 6679 /* Let's see if the delegation was returned */ 6680 if (rfs4_check_recall(state, access)) { 6681 rfs4_dbe_unlock(file->dbe); 6682 rfs4_dbe_unlock(state->dbe); 6683 rfs4_file_rele(file); 6684 rfs4_update_lease(state->owner->client); 6685 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6686 /* Not a fully formed open; "close" it */ 6687 if (screate == TRUE) 6688 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6689 rfs4_state_rele(state); 6690 resp->status = NFS4ERR_DELAY; 6691 return; 6692 } 6693 } 6694 /* 6695 * the share check passed and any delegation conflict has been 6696 * taken care of, now call vop_open. 6697 * if this is the first open then call vop_open with fflags. 6698 * if not, call vn_open_upgrade with just the upgrade flags. 6699 * 6700 * if the file has been opened already, it will have the current 6701 * access mode in the state struct. if it has no share access, then 6702 * this is a new open. 6703 * 6704 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6705 * call VOP_OPEN(), just do the open upgrade. 6706 */ 6707 if (((state->share_access & OPEN4_SHARE_ACCESS_BOTH) == 0) && 6708 !deleg_cur) { 6709 ct.cc_sysid = sysid; 6710 ct.cc_pid = shr.s_pid; 6711 ct.cc_caller_id = nfs4_srv_caller_id; 6712 ct.cc_flags = CC_DONTBLOCK; 6713 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6714 if (err) { 6715 rfs4_dbe_unlock(file->dbe); 6716 rfs4_dbe_unlock(state->dbe); 6717 rfs4_file_rele(file); 6718 (void) vop_shrlock(cs->vp, F_UNSHARE, &shr, fflags); 6719 /* Not a fully formed open; "close" it */ 6720 if (screate == TRUE) 6721 rfs4_state_close(state, FALSE, FALSE, cs->cr); 6722 rfs4_state_rele(state); 6723 /* check if a monitor detected a delegation conflict */ 6724 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6725 resp->status = NFS4ERR_DELAY; 6726 else 6727 resp->status = NFS4ERR_SERVERFAULT; 6728 return; 6729 } 6730 } else { /* open upgrade */ 6731 /* 6732 * calculate the fflags for the new mode that is being added 6733 * by this upgrade. 6734 */ 6735 fflags = 0; 6736 if (amodes & OPEN4_SHARE_ACCESS_READ) 6737 fflags |= FREAD; 6738 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6739 fflags |= FWRITE; 6740 vn_open_upgrade(cs->vp, fflags); 6741 } 6742 6743 if (dmodes & OPEN4_SHARE_DENY_READ) 6744 file->deny_read++; 6745 if (dmodes & OPEN4_SHARE_DENY_WRITE) 6746 file->deny_write++; 6747 file->share_deny |= deny; 6748 state->share_deny |= deny; 6749 6750 if (amodes & OPEN4_SHARE_ACCESS_READ) 6751 file->access_read++; 6752 if (amodes & OPEN4_SHARE_ACCESS_WRITE) 6753 file->access_write++; 6754 file->share_access |= access; 6755 state->share_access |= access; 6756 6757 /* 6758 * Check for delegation here. if the deleg argument is not 6759 * DELEG_ANY, then this is a reclaim from a client and 6760 * we must honor the delegation requested. If necessary we can 6761 * set the recall flag. 6762 */ 6763 6764 dsp = rfs4_grant_delegation(deleg, state, &recall); 6765 6766 cs->deleg = (file->dinfo->dtype == OPEN_DELEGATE_WRITE); 6767 6768 next_stateid(&state->stateid); 6769 6770 resp->stateid = state->stateid.stateid; 6771 6772 rfs4_dbe_unlock(file->dbe); 6773 rfs4_dbe_unlock(state->dbe); 6774 6775 if (dsp) { 6776 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6777 rfs4_deleg_state_rele(dsp); 6778 } 6779 6780 rfs4_file_rele(file); 6781 rfs4_state_rele(state); 6782 6783 resp->status = NFS4_OK; 6784 } 6785 6786 /*ARGSUSED*/ 6787 static void 6788 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6789 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6790 { 6791 change_info4 *cinfo = &resp->cinfo; 6792 bitmap4 *attrset = &resp->attrset; 6793 6794 if (args->opentype == OPEN4_NOCREATE) 6795 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6796 req, cs, args->share_access, cinfo); 6797 else { 6798 /* inhibit delegation grants during exclusive create */ 6799 6800 if (args->mode == EXCLUSIVE4) 6801 rfs4_disable_delegation(); 6802 6803 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6804 oo->client->clientid); 6805 } 6806 6807 if (resp->status == NFS4_OK) { 6808 6809 /* cs->vp cs->fh now reference the desired file */ 6810 6811 rfs4_do_open(cs, req, oo, DELEG_ANY, args->share_access, 6812 args->share_deny, resp, 0); 6813 6814 /* 6815 * If rfs4_createfile set attrset, we must 6816 * clear this attrset before the response is copied. 6817 */ 6818 if (resp->status != NFS4_OK && resp->attrset) { 6819 resp->attrset = 0; 6820 } 6821 } 6822 else 6823 *cs->statusp = resp->status; 6824 6825 if (args->mode == EXCLUSIVE4) 6826 rfs4_enable_delegation(); 6827 } 6828 6829 /*ARGSUSED*/ 6830 static void 6831 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6832 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6833 { 6834 change_info4 *cinfo = &resp->cinfo; 6835 vattr_t va; 6836 vtype_t v_type = cs->vp->v_type; 6837 int error = 0; 6838 6839 /* Verify that we have a regular file */ 6840 if (v_type != VREG) { 6841 if (v_type == VDIR) 6842 resp->status = NFS4ERR_ISDIR; 6843 else if (v_type == VLNK) 6844 resp->status = NFS4ERR_SYMLINK; 6845 else 6846 resp->status = NFS4ERR_INVAL; 6847 return; 6848 } 6849 6850 va.va_mask = AT_MODE|AT_UID; 6851 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 6852 if (error) { 6853 resp->status = puterrno4(error); 6854 return; 6855 } 6856 6857 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 6858 6859 /* 6860 * Check if we have access to the file, Note the the file 6861 * could have originally been open UNCHECKED or GUARDED 6862 * with mode bits that will now fail, but there is nothing 6863 * we can really do about that except in the case that the 6864 * owner of the file is the one requesting the open. 6865 */ 6866 if (crgetuid(cs->cr) != va.va_uid) { 6867 resp->status = check_open_access(args->share_access, cs, req); 6868 if (resp->status != NFS4_OK) { 6869 return; 6870 } 6871 } 6872 6873 /* 6874 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 6875 */ 6876 cinfo->before = 0; 6877 cinfo->after = 0; 6878 cinfo->atomic = FALSE; 6879 6880 rfs4_do_open(cs, req, oo, 6881 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 6882 args->share_access, args->share_deny, resp, 0); 6883 } 6884 6885 static void 6886 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 6887 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6888 { 6889 int error; 6890 nfsstat4 status; 6891 stateid4 stateid = 6892 args->open_claim4_u.delegate_cur_info.delegate_stateid; 6893 rfs4_deleg_state_t *dsp; 6894 6895 /* 6896 * Find the state info from the stateid and confirm that the 6897 * file is delegated. If the state openowner is the same as 6898 * the supplied openowner we're done. If not, get the file 6899 * info from the found state info. Use that file info to 6900 * create the state for this lock owner. Note solaris doen't 6901 * really need the pathname to find the file. We may want to 6902 * lookup the pathname and make sure that the vp exist and 6903 * matches the vp in the file structure. However it is 6904 * possible that the pathname nolonger exists (local process 6905 * unlinks the file), so this may not be that useful. 6906 */ 6907 6908 status = rfs4_get_deleg_state(&stateid, &dsp); 6909 if (status != NFS4_OK) { 6910 resp->status = status; 6911 return; 6912 } 6913 6914 ASSERT(dsp->finfo->dinfo->dtype != OPEN_DELEGATE_NONE); 6915 6916 /* 6917 * New lock owner, create state. Since this was probably called 6918 * in response to a CB_RECALL we set deleg to DELEG_NONE 6919 */ 6920 6921 ASSERT(cs->vp != NULL); 6922 VN_RELE(cs->vp); 6923 VN_HOLD(dsp->finfo->vp); 6924 cs->vp = dsp->finfo->vp; 6925 6926 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 6927 rfs4_deleg_state_rele(dsp); 6928 *cs->statusp = resp->status = puterrno4(error); 6929 return; 6930 } 6931 6932 /* Mark progress for delegation returns */ 6933 dsp->finfo->dinfo->time_lastwrite = gethrestime_sec(); 6934 rfs4_deleg_state_rele(dsp); 6935 rfs4_do_open(cs, req, oo, DELEG_NONE, 6936 args->share_access, args->share_deny, resp, 1); 6937 } 6938 6939 /*ARGSUSED*/ 6940 static void 6941 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 6942 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6943 { 6944 /* 6945 * Lookup the pathname, it must already exist since this file 6946 * was delegated. 6947 * 6948 * Find the file and state info for this vp and open owner pair. 6949 * check that they are in fact delegated. 6950 * check that the state access and deny modes are the same. 6951 * 6952 * Return the delgation possibly seting the recall flag. 6953 */ 6954 rfs4_file_t *file; 6955 rfs4_state_t *state; 6956 bool_t create = FALSE; 6957 bool_t dcreate = FALSE; 6958 rfs4_deleg_state_t *dsp; 6959 nfsace4 *ace; 6960 6961 6962 /* Note we ignore oflags */ 6963 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 6964 req, cs, args->share_access, &resp->cinfo); 6965 6966 if (resp->status != NFS4_OK) { 6967 return; 6968 } 6969 6970 /* get the file struct and hold a lock on it during initial open */ 6971 file = rfs4_findfile_withlock(cs->vp, NULL, &create); 6972 if (file == NULL) { 6973 NFS4_DEBUG(rfs4_debug, 6974 (CE_NOTE, "rfs4_do_opendelprev: can't find file")); 6975 resp->status = NFS4ERR_SERVERFAULT; 6976 return; 6977 } 6978 6979 state = rfs4_findstate_by_owner_file(oo, file, &create); 6980 if (state == NULL) { 6981 NFS4_DEBUG(rfs4_debug, 6982 (CE_NOTE, "rfs4_do_opendelprev: can't find state")); 6983 resp->status = NFS4ERR_SERVERFAULT; 6984 rfs4_file_rele_withunlock(file); 6985 return; 6986 } 6987 6988 rfs4_dbe_lock(state->dbe); 6989 rfs4_dbe_lock(file->dbe); 6990 if (args->share_access != state->share_access || 6991 args->share_deny != state->share_deny || 6992 state->finfo->dinfo->dtype == OPEN_DELEGATE_NONE) { 6993 NFS4_DEBUG(rfs4_debug, 6994 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 6995 rfs4_dbe_unlock(file->dbe); 6996 rfs4_dbe_unlock(state->dbe); 6997 rfs4_file_rele(file); 6998 rfs4_state_rele(state); 6999 resp->status = NFS4ERR_SERVERFAULT; 7000 return; 7001 } 7002 rfs4_dbe_unlock(file->dbe); 7003 rfs4_dbe_unlock(state->dbe); 7004 7005 dsp = rfs4_finddeleg(state, &dcreate); 7006 if (dsp == NULL) { 7007 rfs4_state_rele(state); 7008 rfs4_file_rele(file); 7009 resp->status = NFS4ERR_SERVERFAULT; 7010 return; 7011 } 7012 7013 next_stateid(&state->stateid); 7014 7015 resp->stateid = state->stateid.stateid; 7016 7017 resp->delegation.delegation_type = dsp->dtype; 7018 7019 if (dsp->dtype == OPEN_DELEGATE_READ) { 7020 open_read_delegation4 *rv = 7021 &resp->delegation.open_delegation4_u.read; 7022 7023 rv->stateid = dsp->delegid.stateid; 7024 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7025 ace = &rv->permissions; 7026 } else { 7027 open_write_delegation4 *rv = 7028 &resp->delegation.open_delegation4_u.write; 7029 7030 rv->stateid = dsp->delegid.stateid; 7031 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7032 ace = &rv->permissions; 7033 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7034 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7035 } 7036 7037 /* XXX For now */ 7038 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7039 ace->flag = 0; 7040 ace->access_mask = 0; 7041 ace->who.utf8string_len = 0; 7042 ace->who.utf8string_val = 0; 7043 7044 rfs4_deleg_state_rele(dsp); 7045 rfs4_state_rele(state); 7046 rfs4_file_rele(file); 7047 } 7048 7049 typedef enum { 7050 NFS4_CHKSEQ_OKAY = 0, 7051 NFS4_CHKSEQ_REPLAY = 1, 7052 NFS4_CHKSEQ_BAD = 2 7053 } rfs4_chkseq_t; 7054 7055 /* 7056 * Generic function for sequence number checks. 7057 */ 7058 static rfs4_chkseq_t 7059 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7060 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7061 { 7062 /* Same sequence ids and matching operations? */ 7063 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7064 if (copyres == TRUE) { 7065 rfs4_free_reply(resop); 7066 rfs4_copy_reply(resop, lastop); 7067 } 7068 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7069 "Replayed SEQID %d\n", seqid)); 7070 return (NFS4_CHKSEQ_REPLAY); 7071 } 7072 7073 /* If the incoming sequence is not the next expected then it is bad */ 7074 if (rqst_seq != seqid + 1) { 7075 if (rqst_seq == seqid) { 7076 NFS4_DEBUG(rfs4_debug, 7077 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7078 "but last op was %d current op is %d\n", 7079 lastop->resop, resop->resop)); 7080 return (NFS4_CHKSEQ_BAD); 7081 } 7082 NFS4_DEBUG(rfs4_debug, 7083 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7084 rqst_seq, seqid)); 7085 return (NFS4_CHKSEQ_BAD); 7086 } 7087 7088 /* Everything okay -- next expected */ 7089 return (NFS4_CHKSEQ_OKAY); 7090 } 7091 7092 7093 static rfs4_chkseq_t 7094 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7095 { 7096 rfs4_chkseq_t rc; 7097 7098 rfs4_dbe_lock(op->dbe); 7099 rc = rfs4_check_seqid(op->open_seqid, op->reply, seqid, resop, TRUE); 7100 rfs4_dbe_unlock(op->dbe); 7101 7102 if (rc == NFS4_CHKSEQ_OKAY) 7103 rfs4_update_lease(op->client); 7104 7105 return (rc); 7106 } 7107 7108 static rfs4_chkseq_t 7109 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, 7110 nfs_resop4 *resop) 7111 { 7112 rfs4_chkseq_t rc; 7113 7114 rfs4_dbe_lock(op->dbe); 7115 rc = rfs4_check_seqid(op->open_seqid, op->reply, 7116 olo_seqid, resop, FALSE); 7117 rfs4_dbe_unlock(op->dbe); 7118 7119 return (rc); 7120 } 7121 7122 static rfs4_chkseq_t 7123 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lp, nfs_resop4 *resop) 7124 { 7125 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7126 7127 rfs4_dbe_lock(lp->dbe); 7128 if (!lp->skip_seqid_check) 7129 rc = rfs4_check_seqid(lp->seqid, lp->reply, seqid, resop, TRUE); 7130 rfs4_dbe_unlock(lp->dbe); 7131 7132 return (rc); 7133 } 7134 7135 static void 7136 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7137 struct svc_req *req, struct compound_state *cs) 7138 { 7139 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7140 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7141 open_owner4 *owner = &args->owner; 7142 open_claim_type4 claim = args->claim; 7143 rfs4_client_t *cp; 7144 rfs4_openowner_t *oo; 7145 bool_t create; 7146 bool_t replay = FALSE; 7147 int can_reclaim; 7148 7149 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7150 OPEN4args *, args); 7151 7152 if (cs->vp == NULL) { 7153 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7154 goto end; 7155 } 7156 7157 /* 7158 * Need to check clientid and lease expiration first based on 7159 * error ordering and incrementing sequence id. 7160 */ 7161 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7162 if (cp == NULL) { 7163 *cs->statusp = resp->status = 7164 rfs4_check_clientid(&owner->clientid, 0); 7165 goto end; 7166 } 7167 7168 if (rfs4_lease_expired(cp)) { 7169 rfs4_client_close(cp); 7170 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7171 goto end; 7172 } 7173 can_reclaim = cp->can_reclaim; 7174 7175 /* 7176 * Find the open_owner for use from this point forward. Take 7177 * care in updating the sequence id based on the type of error 7178 * being returned. 7179 */ 7180 retry: 7181 create = TRUE; 7182 oo = rfs4_findopenowner(owner, &create, args->seqid); 7183 if (oo == NULL) { 7184 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 7185 rfs4_client_rele(cp); 7186 goto end; 7187 } 7188 7189 /* Hold off access to the sequence space while the open is done */ 7190 rfs4_sw_enter(&oo->oo_sw); 7191 7192 /* 7193 * If the open_owner existed before at the server, then check 7194 * the sequence id. 7195 */ 7196 if (!create && !oo->postpone_confirm) { 7197 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7198 case NFS4_CHKSEQ_BAD: 7199 if ((args->seqid > oo->open_seqid) && 7200 oo->need_confirm) { 7201 rfs4_free_opens(oo, TRUE, FALSE); 7202 rfs4_sw_exit(&oo->oo_sw); 7203 rfs4_openowner_rele(oo); 7204 goto retry; 7205 } 7206 resp->status = NFS4ERR_BAD_SEQID; 7207 goto out; 7208 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7209 replay = TRUE; 7210 goto out; 7211 default: 7212 break; 7213 } 7214 7215 /* 7216 * Sequence was ok and open owner exists 7217 * check to see if we have yet to see an 7218 * open_confirm. 7219 */ 7220 if (oo->need_confirm) { 7221 rfs4_free_opens(oo, TRUE, FALSE); 7222 rfs4_sw_exit(&oo->oo_sw); 7223 rfs4_openowner_rele(oo); 7224 goto retry; 7225 } 7226 } 7227 /* Grace only applies to regular-type OPENs */ 7228 if (rfs4_clnt_in_grace(cp) && 7229 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7230 *cs->statusp = resp->status = NFS4ERR_GRACE; 7231 goto out; 7232 } 7233 7234 /* 7235 * If previous state at the server existed then can_reclaim 7236 * will be set. If not reply NFS4ERR_NO_GRACE to the 7237 * client. 7238 */ 7239 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7240 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7241 goto out; 7242 } 7243 7244 7245 /* 7246 * Reject the open if the client has missed the grace period 7247 */ 7248 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7249 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7250 goto out; 7251 } 7252 7253 /* Couple of up-front bookkeeping items */ 7254 if (oo->need_confirm) { 7255 /* 7256 * If this is a reclaim OPEN then we should not ask 7257 * for a confirmation of the open_owner per the 7258 * protocol specification. 7259 */ 7260 if (claim == CLAIM_PREVIOUS) 7261 oo->need_confirm = FALSE; 7262 else 7263 resp->rflags |= OPEN4_RESULT_CONFIRM; 7264 } 7265 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7266 7267 /* 7268 * If there is an unshared filesystem mounted on this vnode, 7269 * do not allow to open/create in this directory. 7270 */ 7271 if (vn_ismntpt(cs->vp)) { 7272 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7273 goto out; 7274 } 7275 7276 /* 7277 * access must READ, WRITE, or BOTH. No access is invalid. 7278 * deny can be READ, WRITE, BOTH, or NONE. 7279 * bits not defined for access/deny are invalid. 7280 */ 7281 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7282 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7283 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7284 *cs->statusp = resp->status = NFS4ERR_INVAL; 7285 goto out; 7286 } 7287 7288 7289 /* 7290 * make sure attrset is zero before response is built. 7291 */ 7292 resp->attrset = 0; 7293 7294 switch (claim) { 7295 case CLAIM_NULL: 7296 rfs4_do_opennull(cs, req, args, oo, resp); 7297 break; 7298 case CLAIM_PREVIOUS: 7299 rfs4_do_openprev(cs, req, args, oo, resp); 7300 break; 7301 case CLAIM_DELEGATE_CUR: 7302 rfs4_do_opendelcur(cs, req, args, oo, resp); 7303 break; 7304 case CLAIM_DELEGATE_PREV: 7305 rfs4_do_opendelprev(cs, req, args, oo, resp); 7306 break; 7307 default: 7308 resp->status = NFS4ERR_INVAL; 7309 break; 7310 } 7311 7312 out: 7313 rfs4_client_rele(cp); 7314 7315 /* Catch sequence id handling here to make it a little easier */ 7316 switch (resp->status) { 7317 case NFS4ERR_BADXDR: 7318 case NFS4ERR_BAD_SEQID: 7319 case NFS4ERR_BAD_STATEID: 7320 case NFS4ERR_NOFILEHANDLE: 7321 case NFS4ERR_RESOURCE: 7322 case NFS4ERR_STALE_CLIENTID: 7323 case NFS4ERR_STALE_STATEID: 7324 /* 7325 * The protocol states that if any of these errors are 7326 * being returned, the sequence id should not be 7327 * incremented. Any other return requires an 7328 * increment. 7329 */ 7330 break; 7331 default: 7332 /* Always update the lease in this case */ 7333 rfs4_update_lease(oo->client); 7334 7335 /* Regular response - copy the result */ 7336 if (!replay) 7337 rfs4_update_open_resp(oo, resop, &cs->fh); 7338 7339 /* 7340 * REPLAY case: Only if the previous response was OK 7341 * do we copy the filehandle. If not OK, no 7342 * filehandle to copy. 7343 */ 7344 if (replay == TRUE && 7345 resp->status == NFS4_OK && 7346 oo->reply_fh.nfs_fh4_val) { 7347 /* 7348 * If this is a replay, we must restore the 7349 * current filehandle/vp to that of what was 7350 * returned originally. Try our best to do 7351 * it. 7352 */ 7353 nfs_fh4_fmt_t *fh_fmtp = 7354 (nfs_fh4_fmt_t *)oo->reply_fh.nfs_fh4_val; 7355 7356 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7357 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7358 7359 if (cs->exi == NULL) { 7360 resp->status = NFS4ERR_STALE; 7361 goto finish; 7362 } 7363 7364 VN_RELE(cs->vp); 7365 7366 cs->vp = nfs4_fhtovp(&oo->reply_fh, cs->exi, 7367 &resp->status); 7368 7369 if (cs->vp == NULL) 7370 goto finish; 7371 7372 nfs_fh4_copy(&oo->reply_fh, &cs->fh); 7373 } 7374 7375 /* 7376 * If this was a replay, no need to update the 7377 * sequence id. If the open_owner was not created on 7378 * this pass, then update. The first use of an 7379 * open_owner will not bump the sequence id. 7380 */ 7381 if (replay == FALSE && !create) 7382 rfs4_update_open_sequence(oo); 7383 /* 7384 * If the client is receiving an error and the 7385 * open_owner needs to be confirmed, there is no way 7386 * to notify the client of this fact ignoring the fact 7387 * that the server has no method of returning a 7388 * stateid to confirm. Therefore, the server needs to 7389 * mark this open_owner in a way as to avoid the 7390 * sequence id checking the next time the client uses 7391 * this open_owner. 7392 */ 7393 if (resp->status != NFS4_OK && oo->need_confirm) 7394 oo->postpone_confirm = TRUE; 7395 /* 7396 * If OK response then clear the postpone flag and 7397 * reset the sequence id to keep in sync with the 7398 * client. 7399 */ 7400 if (resp->status == NFS4_OK && oo->postpone_confirm) { 7401 oo->postpone_confirm = FALSE; 7402 oo->open_seqid = args->seqid; 7403 } 7404 break; 7405 } 7406 7407 finish: 7408 *cs->statusp = resp->status; 7409 7410 rfs4_sw_exit(&oo->oo_sw); 7411 rfs4_openowner_rele(oo); 7412 7413 end: 7414 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7415 OPEN4res *, resp); 7416 } 7417 7418 /*ARGSUSED*/ 7419 void 7420 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7421 struct svc_req *req, struct compound_state *cs) 7422 { 7423 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7424 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7425 rfs4_state_t *sp; 7426 nfsstat4 status; 7427 7428 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7429 OPEN_CONFIRM4args *, args); 7430 7431 if (cs->vp == NULL) { 7432 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7433 goto out; 7434 } 7435 7436 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7437 if (status != NFS4_OK) { 7438 *cs->statusp = resp->status = status; 7439 goto out; 7440 } 7441 7442 /* Ensure specified filehandle matches */ 7443 if (cs->vp != sp->finfo->vp) { 7444 rfs4_state_rele(sp); 7445 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7446 goto out; 7447 } 7448 7449 /* hold off other access to open_owner while we tinker */ 7450 rfs4_sw_enter(&sp->owner->oo_sw); 7451 7452 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7453 case NFS4_CHECK_STATEID_OKAY: 7454 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7455 resop) != 0) { 7456 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7457 break; 7458 } 7459 /* 7460 * If it is the appropriate stateid and determined to 7461 * be "OKAY" then this means that the stateid does not 7462 * need to be confirmed and the client is in error for 7463 * sending an OPEN_CONFIRM. 7464 */ 7465 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7466 break; 7467 case NFS4_CHECK_STATEID_OLD: 7468 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7469 break; 7470 case NFS4_CHECK_STATEID_BAD: 7471 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7472 break; 7473 case NFS4_CHECK_STATEID_EXPIRED: 7474 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7475 break; 7476 case NFS4_CHECK_STATEID_CLOSED: 7477 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7478 break; 7479 case NFS4_CHECK_STATEID_REPLAY: 7480 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7481 case NFS4_CHKSEQ_OKAY: 7482 /* 7483 * This is replayed stateid; if seqid matches 7484 * next expected, then client is using wrong seqid. 7485 */ 7486 /* fall through */ 7487 case NFS4_CHKSEQ_BAD: 7488 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7489 break; 7490 case NFS4_CHKSEQ_REPLAY: 7491 /* 7492 * Note this case is the duplicate case so 7493 * resp->status is already set. 7494 */ 7495 *cs->statusp = resp->status; 7496 rfs4_update_lease(sp->owner->client); 7497 break; 7498 } 7499 break; 7500 case NFS4_CHECK_STATEID_UNCONFIRMED: 7501 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7502 resop) != NFS4_CHKSEQ_OKAY) { 7503 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7504 break; 7505 } 7506 *cs->statusp = resp->status = NFS4_OK; 7507 7508 next_stateid(&sp->stateid); 7509 resp->open_stateid = sp->stateid.stateid; 7510 sp->owner->need_confirm = FALSE; 7511 rfs4_update_lease(sp->owner->client); 7512 rfs4_update_open_sequence(sp->owner); 7513 rfs4_update_open_resp(sp->owner, resop, NULL); 7514 break; 7515 default: 7516 ASSERT(FALSE); 7517 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7518 break; 7519 } 7520 rfs4_sw_exit(&sp->owner->oo_sw); 7521 rfs4_state_rele(sp); 7522 7523 out: 7524 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7525 OPEN_CONFIRM4res *, resp); 7526 } 7527 7528 /*ARGSUSED*/ 7529 void 7530 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7531 struct svc_req *req, struct compound_state *cs) 7532 { 7533 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7534 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7535 uint32_t access = args->share_access; 7536 uint32_t deny = args->share_deny; 7537 nfsstat4 status; 7538 rfs4_state_t *sp; 7539 rfs4_file_t *fp; 7540 int fflags = 0; 7541 7542 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7543 OPEN_DOWNGRADE4args *, args); 7544 7545 if (cs->vp == NULL) { 7546 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7547 goto out; 7548 } 7549 7550 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7551 if (status != NFS4_OK) { 7552 *cs->statusp = resp->status = status; 7553 goto out; 7554 } 7555 7556 /* Ensure specified filehandle matches */ 7557 if (cs->vp != sp->finfo->vp) { 7558 rfs4_state_rele(sp); 7559 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7560 goto out; 7561 } 7562 7563 /* hold off other access to open_owner while we tinker */ 7564 rfs4_sw_enter(&sp->owner->oo_sw); 7565 7566 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7567 case NFS4_CHECK_STATEID_OKAY: 7568 if (rfs4_check_open_seqid(args->seqid, sp->owner, 7569 resop) != NFS4_CHKSEQ_OKAY) { 7570 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7571 goto end; 7572 } 7573 break; 7574 case NFS4_CHECK_STATEID_OLD: 7575 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7576 goto end; 7577 case NFS4_CHECK_STATEID_BAD: 7578 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7579 goto end; 7580 case NFS4_CHECK_STATEID_EXPIRED: 7581 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7582 goto end; 7583 case NFS4_CHECK_STATEID_CLOSED: 7584 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7585 goto end; 7586 case NFS4_CHECK_STATEID_UNCONFIRMED: 7587 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7588 goto end; 7589 case NFS4_CHECK_STATEID_REPLAY: 7590 /* Check the sequence id for the open owner */ 7591 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 7592 case NFS4_CHKSEQ_OKAY: 7593 /* 7594 * This is replayed stateid; if seqid matches 7595 * next expected, then client is using wrong seqid. 7596 */ 7597 /* fall through */ 7598 case NFS4_CHKSEQ_BAD: 7599 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7600 goto end; 7601 case NFS4_CHKSEQ_REPLAY: 7602 /* 7603 * Note this case is the duplicate case so 7604 * resp->status is already set. 7605 */ 7606 *cs->statusp = resp->status; 7607 rfs4_update_lease(sp->owner->client); 7608 goto end; 7609 } 7610 break; 7611 default: 7612 ASSERT(FALSE); 7613 break; 7614 } 7615 7616 rfs4_dbe_lock(sp->dbe); 7617 /* 7618 * Check that the new access modes and deny modes are valid. 7619 * Check that no invalid bits are set. 7620 */ 7621 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7622 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7623 *cs->statusp = resp->status = NFS4ERR_INVAL; 7624 rfs4_update_open_sequence(sp->owner); 7625 rfs4_dbe_unlock(sp->dbe); 7626 goto end; 7627 } 7628 7629 /* 7630 * The new modes must be a subset of the current modes and 7631 * the access must specify at least one mode. To test that 7632 * the new mode is a subset of the current modes we bitwise 7633 * AND them together and check that the result equals the new 7634 * mode. For example: 7635 * New mode, access == R and current mode, sp->share_access == RW 7636 * access & sp->share_access == R == access, so the new access mode 7637 * is valid. Consider access == RW, sp->share_access = R 7638 * access & sp->share_access == R != access, so the new access mode 7639 * is invalid. 7640 */ 7641 if ((access & sp->share_access) != access || 7642 (deny & sp->share_deny) != deny || 7643 (access & 7644 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7645 *cs->statusp = resp->status = NFS4ERR_INVAL; 7646 rfs4_update_open_sequence(sp->owner); 7647 rfs4_dbe_unlock(sp->dbe); 7648 goto end; 7649 } 7650 7651 /* 7652 * Release any share locks associated with this stateID. 7653 * Strictly speaking, this violates the spec because the 7654 * spec effectively requires that open downgrade be atomic. 7655 * At present, fs_shrlock does not have this capability. 7656 */ 7657 rfs4_dbe_unlock(sp->dbe); 7658 rfs4_unshare(sp); 7659 rfs4_dbe_lock(sp->dbe); 7660 7661 fp = sp->finfo; 7662 rfs4_dbe_lock(fp->dbe); 7663 7664 /* 7665 * If the current mode has deny read and the new mode 7666 * does not, decrement the number of deny read mode bits 7667 * and if it goes to zero turn off the deny read bit 7668 * on the file. 7669 */ 7670 if ((sp->share_deny & OPEN4_SHARE_DENY_READ) && 7671 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7672 fp->deny_read--; 7673 if (fp->deny_read == 0) 7674 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 7675 } 7676 7677 /* 7678 * If the current mode has deny write and the new mode 7679 * does not, decrement the number of deny write mode bits 7680 * and if it goes to zero turn off the deny write bit 7681 * on the file. 7682 */ 7683 if ((sp->share_deny & OPEN4_SHARE_DENY_WRITE) && 7684 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7685 fp->deny_write--; 7686 if (fp->deny_write == 0) 7687 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7688 } 7689 7690 /* 7691 * If the current mode has access read and the new mode 7692 * does not, decrement the number of access read mode bits 7693 * and if it goes to zero turn off the access read bit 7694 * on the file. set fflags to FREAD for the call to 7695 * vn_open_downgrade(). 7696 */ 7697 if ((sp->share_access & OPEN4_SHARE_ACCESS_READ) && 7698 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7699 fp->access_read--; 7700 if (fp->access_read == 0) 7701 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 7702 fflags |= FREAD; 7703 } 7704 7705 /* 7706 * If the current mode has access write and the new mode 7707 * does not, decrement the number of access write mode bits 7708 * and if it goes to zero turn off the access write bit 7709 * on the file. set fflags to FWRITE for the call to 7710 * vn_open_downgrade(). 7711 */ 7712 if ((sp->share_access & OPEN4_SHARE_ACCESS_WRITE) && 7713 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7714 fp->access_write--; 7715 if (fp->access_write == 0) 7716 fp->share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7717 fflags |= FWRITE; 7718 } 7719 7720 /* Set the new access and deny modes */ 7721 sp->share_access = access; 7722 sp->share_deny = deny; 7723 /* Check that the file is still accessible */ 7724 ASSERT(fp->share_access); 7725 7726 rfs4_dbe_unlock(fp->dbe); 7727 7728 rfs4_dbe_unlock(sp->dbe); 7729 7730 if ((status = rfs4_share(sp)) != NFS4_OK) { 7731 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7732 rfs4_update_open_sequence(sp->owner); 7733 goto end; 7734 } 7735 7736 /* 7737 * we successfully downgraded the share lock, now we need to downgrade 7738 * the open. it is possible that the downgrade was only for a deny 7739 * mode and we have nothing else to do. 7740 */ 7741 if ((fflags & (FREAD|FWRITE)) != 0) 7742 vn_open_downgrade(cs->vp, fflags); 7743 7744 rfs4_dbe_lock(sp->dbe); 7745 7746 /* Update the stateid */ 7747 next_stateid(&sp->stateid); 7748 resp->open_stateid = sp->stateid.stateid; 7749 7750 rfs4_dbe_unlock(sp->dbe); 7751 7752 *cs->statusp = resp->status = NFS4_OK; 7753 /* Update the lease */ 7754 rfs4_update_lease(sp->owner->client); 7755 /* And the sequence */ 7756 rfs4_update_open_sequence(sp->owner); 7757 rfs4_update_open_resp(sp->owner, resop, NULL); 7758 7759 end: 7760 rfs4_sw_exit(&sp->owner->oo_sw); 7761 rfs4_state_rele(sp); 7762 out: 7763 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7764 OPEN_DOWNGRADE4res *, resp); 7765 } 7766 7767 /* 7768 * The logic behind this function is detailed in the NFSv4 RFC in the 7769 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7770 * that section for explicit guidance to server behavior for 7771 * SETCLIENTID. 7772 */ 7773 void 7774 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7775 struct svc_req *req, struct compound_state *cs) 7776 { 7777 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7778 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7779 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7780 bool_t create = TRUE; 7781 char *addr, *netid; 7782 int len; 7783 7784 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7785 SETCLIENTID4args *, args); 7786 retry: 7787 newcp = cp_confirmed = cp_unconfirmed = NULL; 7788 7789 /* 7790 * In search of an EXISTING client matching the incoming 7791 * request to establish a new client identifier at the server 7792 */ 7793 create = TRUE; 7794 cp = rfs4_findclient(&args->client, &create, NULL); 7795 7796 /* Should never happen */ 7797 ASSERT(cp != NULL); 7798 7799 if (cp == NULL) { 7800 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7801 goto out; 7802 } 7803 7804 /* 7805 * Easiest case. Client identifier is newly created and is 7806 * unconfirmed. Also note that for this case, no other 7807 * entries exist for the client identifier. Nothing else to 7808 * check. Just setup the response and respond. 7809 */ 7810 if (create) { 7811 *cs->statusp = res->status = NFS4_OK; 7812 res->SETCLIENTID4res_u.resok4.clientid = cp->clientid; 7813 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7814 cp->confirm_verf; 7815 /* Setup callback information; CB_NULL confirmation later */ 7816 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 7817 7818 rfs4_client_rele(cp); 7819 goto out; 7820 } 7821 7822 /* 7823 * An existing, confirmed client may exist but it may not have 7824 * been active for at least one lease period. If so, then 7825 * "close" the client and create a new client identifier 7826 */ 7827 if (rfs4_lease_expired(cp)) { 7828 rfs4_client_close(cp); 7829 goto retry; 7830 } 7831 7832 if (cp->need_confirm == TRUE) 7833 cp_unconfirmed = cp; 7834 else 7835 cp_confirmed = cp; 7836 7837 cp = NULL; 7838 7839 /* 7840 * We have a confirmed client, now check for an 7841 * unconfimred entry 7842 */ 7843 if (cp_confirmed) { 7844 /* If creds don't match then client identifier is inuse */ 7845 if (!creds_ok(cp_confirmed->cr_set, req, cs)) { 7846 rfs4_cbinfo_t *cbp; 7847 /* 7848 * Some one else has established this client 7849 * id. Try and say * who they are. We will use 7850 * the call back address supplied by * the 7851 * first client. 7852 */ 7853 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 7854 7855 addr = netid = NULL; 7856 7857 cbp = &cp_confirmed->cbinfo; 7858 if (cbp->cb_callback.cb_location.r_addr && 7859 cbp->cb_callback.cb_location.r_netid) { 7860 cb_client4 *cbcp = &cbp->cb_callback; 7861 7862 len = strlen(cbcp->cb_location.r_addr)+1; 7863 addr = kmem_alloc(len, KM_SLEEP); 7864 bcopy(cbcp->cb_location.r_addr, addr, len); 7865 len = strlen(cbcp->cb_location.r_netid)+1; 7866 netid = kmem_alloc(len, KM_SLEEP); 7867 bcopy(cbcp->cb_location.r_netid, netid, len); 7868 } 7869 7870 res->SETCLIENTID4res_u.client_using.r_addr = addr; 7871 res->SETCLIENTID4res_u.client_using.r_netid = netid; 7872 7873 rfs4_client_rele(cp_confirmed); 7874 } 7875 7876 /* 7877 * Confirmed, creds match, and verifier matches; must 7878 * be an update of the callback info 7879 */ 7880 if (cp_confirmed->nfs_client.verifier == 7881 args->client.verifier) { 7882 /* Setup callback information */ 7883 rfs4_client_setcb(cp_confirmed, &args->callback, 7884 args->callback_ident); 7885 7886 /* everything okay -- move ahead */ 7887 *cs->statusp = res->status = NFS4_OK; 7888 res->SETCLIENTID4res_u.resok4.clientid = 7889 cp_confirmed->clientid; 7890 7891 /* update the confirm_verifier and return it */ 7892 rfs4_client_scv_next(cp_confirmed); 7893 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7894 cp_confirmed->confirm_verf; 7895 7896 rfs4_client_rele(cp_confirmed); 7897 goto out; 7898 } 7899 7900 /* 7901 * Creds match but the verifier doesn't. Must search 7902 * for an unconfirmed client that would be replaced by 7903 * this request. 7904 */ 7905 create = FALSE; 7906 cp_unconfirmed = rfs4_findclient(&args->client, &create, 7907 cp_confirmed); 7908 } 7909 7910 /* 7911 * At this point, we have taken care of the brand new client 7912 * struct, INUSE case, update of an existing, and confirmed 7913 * client struct. 7914 */ 7915 7916 /* 7917 * check to see if things have changed while we originally 7918 * picked up the client struct. If they have, then return and 7919 * retry the processing of this SETCLIENTID request. 7920 */ 7921 if (cp_unconfirmed) { 7922 rfs4_dbe_lock(cp_unconfirmed->dbe); 7923 if (!cp_unconfirmed->need_confirm) { 7924 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7925 rfs4_client_rele(cp_unconfirmed); 7926 if (cp_confirmed) 7927 rfs4_client_rele(cp_confirmed); 7928 goto retry; 7929 } 7930 /* do away with the old unconfirmed one */ 7931 rfs4_dbe_invalidate(cp_unconfirmed->dbe); 7932 rfs4_dbe_unlock(cp_unconfirmed->dbe); 7933 rfs4_client_rele(cp_unconfirmed); 7934 cp_unconfirmed = NULL; 7935 } 7936 7937 /* 7938 * This search will temporarily hide the confirmed client 7939 * struct while a new client struct is created as the 7940 * unconfirmed one. 7941 */ 7942 create = TRUE; 7943 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 7944 7945 ASSERT(newcp != NULL); 7946 7947 if (newcp == NULL) { 7948 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7949 rfs4_client_rele(cp_confirmed); 7950 goto out; 7951 } 7952 7953 /* 7954 * If one was not created, then a similar request must be in 7955 * process so release and start over with this one 7956 */ 7957 if (create != TRUE) { 7958 rfs4_client_rele(newcp); 7959 if (cp_confirmed) 7960 rfs4_client_rele(cp_confirmed); 7961 goto retry; 7962 } 7963 7964 *cs->statusp = res->status = NFS4_OK; 7965 res->SETCLIENTID4res_u.resok4.clientid = newcp->clientid; 7966 res->SETCLIENTID4res_u.resok4.setclientid_confirm = newcp->confirm_verf; 7967 /* Setup callback information; CB_NULL confirmation later */ 7968 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 7969 7970 newcp->cp_confirmed = cp_confirmed; 7971 7972 rfs4_client_rele(newcp); 7973 7974 out: 7975 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 7976 SETCLIENTID4res *, res); 7977 } 7978 7979 /*ARGSUSED*/ 7980 void 7981 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7982 struct svc_req *req, struct compound_state *cs) 7983 { 7984 SETCLIENTID_CONFIRM4args *args = 7985 &argop->nfs_argop4_u.opsetclientid_confirm; 7986 SETCLIENTID_CONFIRM4res *res = 7987 &resop->nfs_resop4_u.opsetclientid_confirm; 7988 rfs4_client_t *cp, *cptoclose = NULL; 7989 7990 DTRACE_NFSV4_2(op__setclientid__confirm__start, 7991 struct compound_state *, cs, 7992 SETCLIENTID_CONFIRM4args *, args); 7993 7994 *cs->statusp = res->status = NFS4_OK; 7995 7996 cp = rfs4_findclient_by_id(args->clientid, TRUE); 7997 7998 if (cp == NULL) { 7999 *cs->statusp = res->status = 8000 rfs4_check_clientid(&args->clientid, 1); 8001 goto out; 8002 } 8003 8004 if (!creds_ok(cp, req, cs)) { 8005 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8006 rfs4_client_rele(cp); 8007 goto out; 8008 } 8009 8010 /* If the verifier doesn't match, the record doesn't match */ 8011 if (cp->confirm_verf != args->setclientid_confirm) { 8012 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8013 rfs4_client_rele(cp); 8014 goto out; 8015 } 8016 8017 rfs4_dbe_lock(cp->dbe); 8018 cp->need_confirm = FALSE; 8019 if (cp->cp_confirmed) { 8020 cptoclose = cp->cp_confirmed; 8021 cptoclose->ss_remove = 1; 8022 cp->cp_confirmed = NULL; 8023 } 8024 8025 /* 8026 * Update the client's associated server instance, if it's changed 8027 * since the client was created. 8028 */ 8029 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8030 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8031 8032 /* 8033 * Record clientid in stable storage. 8034 * Must be done after server instance has been assigned. 8035 */ 8036 rfs4_ss_clid(cp, req); 8037 8038 rfs4_dbe_unlock(cp->dbe); 8039 8040 if (cptoclose) 8041 /* don't need to rele, client_close does it */ 8042 rfs4_client_close(cptoclose); 8043 8044 /* If needed, initiate CB_NULL call for callback path */ 8045 rfs4_deleg_cb_check(cp); 8046 rfs4_update_lease(cp); 8047 8048 /* 8049 * Check to see if client can perform reclaims 8050 */ 8051 rfs4_ss_chkclid(cp); 8052 8053 rfs4_client_rele(cp); 8054 8055 out: 8056 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8057 struct compound_state *, cs, 8058 SETCLIENTID_CONFIRM4 *, res); 8059 } 8060 8061 8062 /*ARGSUSED*/ 8063 void 8064 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8065 struct svc_req *req, struct compound_state *cs) 8066 { 8067 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8068 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8069 rfs4_state_t *sp; 8070 nfsstat4 status; 8071 8072 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8073 CLOSE4args *, args); 8074 8075 if (cs->vp == NULL) { 8076 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8077 goto out; 8078 } 8079 8080 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8081 if (status != NFS4_OK) { 8082 *cs->statusp = resp->status = status; 8083 goto out; 8084 } 8085 8086 /* Ensure specified filehandle matches */ 8087 if (cs->vp != sp->finfo->vp) { 8088 rfs4_state_rele(sp); 8089 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8090 goto out; 8091 } 8092 8093 /* hold off other access to open_owner while we tinker */ 8094 rfs4_sw_enter(&sp->owner->oo_sw); 8095 8096 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8097 case NFS4_CHECK_STATEID_OKAY: 8098 if (rfs4_check_open_seqid(args->seqid, sp->owner, 8099 resop) != NFS4_CHKSEQ_OKAY) { 8100 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8101 goto end; 8102 } 8103 break; 8104 case NFS4_CHECK_STATEID_OLD: 8105 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8106 goto end; 8107 case NFS4_CHECK_STATEID_BAD: 8108 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8109 goto end; 8110 case NFS4_CHECK_STATEID_EXPIRED: 8111 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8112 goto end; 8113 case NFS4_CHECK_STATEID_CLOSED: 8114 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8115 goto end; 8116 case NFS4_CHECK_STATEID_UNCONFIRMED: 8117 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8118 goto end; 8119 case NFS4_CHECK_STATEID_REPLAY: 8120 /* Check the sequence id for the open owner */ 8121 switch (rfs4_check_open_seqid(args->seqid, sp->owner, resop)) { 8122 case NFS4_CHKSEQ_OKAY: 8123 /* 8124 * This is replayed stateid; if seqid matches 8125 * next expected, then client is using wrong seqid. 8126 */ 8127 /* FALL THROUGH */ 8128 case NFS4_CHKSEQ_BAD: 8129 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8130 goto end; 8131 case NFS4_CHKSEQ_REPLAY: 8132 /* 8133 * Note this case is the duplicate case so 8134 * resp->status is already set. 8135 */ 8136 *cs->statusp = resp->status; 8137 rfs4_update_lease(sp->owner->client); 8138 goto end; 8139 } 8140 break; 8141 default: 8142 ASSERT(FALSE); 8143 break; 8144 } 8145 8146 rfs4_dbe_lock(sp->dbe); 8147 8148 /* Update the stateid. */ 8149 next_stateid(&sp->stateid); 8150 resp->open_stateid = sp->stateid.stateid; 8151 8152 rfs4_dbe_unlock(sp->dbe); 8153 8154 rfs4_update_lease(sp->owner->client); 8155 rfs4_update_open_sequence(sp->owner); 8156 rfs4_update_open_resp(sp->owner, resop, NULL); 8157 8158 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8159 8160 *cs->statusp = resp->status = status; 8161 8162 end: 8163 rfs4_sw_exit(&sp->owner->oo_sw); 8164 rfs4_state_rele(sp); 8165 out: 8166 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8167 CLOSE4res *, resp); 8168 } 8169 8170 /* 8171 * Manage the counts on the file struct and close all file locks 8172 */ 8173 /*ARGSUSED*/ 8174 void 8175 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8176 bool_t close_of_client) 8177 { 8178 rfs4_file_t *fp = sp->finfo; 8179 rfs4_lo_state_t *lsp; 8180 struct shrlock shr; 8181 struct shr_locowner shr_loco; 8182 int fflags, s_access, s_deny; 8183 8184 fflags = s_access = s_deny = 0; 8185 /* 8186 * Decrement the count for each access and deny bit that this 8187 * state has contributed to the file. If the file counts go to zero 8188 * clear the appropriate bit in the appropriate mask. 8189 */ 8190 8191 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 8192 fp->access_read--; 8193 fflags |= FREAD; 8194 s_access |= F_RDACC; 8195 if (fp->access_read == 0) 8196 fp->share_access &= ~OPEN4_SHARE_ACCESS_READ; 8197 } 8198 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 8199 fp->access_write--; 8200 fflags |= FWRITE; 8201 s_access |= F_WRACC; 8202 if (fp->access_write == 0) 8203 fp->share_access &= ~OPEN4_SHARE_ACCESS_WRITE; 8204 } 8205 if (sp->share_deny & OPEN4_SHARE_DENY_READ) { 8206 fp->deny_read--; 8207 s_deny |= F_RDDNY; 8208 if (fp->deny_read == 0) 8209 fp->share_deny &= ~OPEN4_SHARE_DENY_READ; 8210 } 8211 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) { 8212 fp->deny_write--; 8213 s_deny |= F_WRDNY; 8214 if (fp->deny_write == 0) 8215 fp->share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8216 } 8217 8218 /* 8219 * If this call is part of the larger closing down of client 8220 * state then it is just easier to release all locks 8221 * associated with this client instead of going through each 8222 * individual file and cleaning locks there. 8223 */ 8224 if (close_of_client) { 8225 if (sp->owner->client->unlksys_completed == FALSE && 8226 sp->lockownerlist.next->lsp != NULL && 8227 sp->owner->client->sysidt != LM_NOSYSID) { 8228 /* Is the PxFS kernel module loaded? */ 8229 if (lm_remove_file_locks != NULL) { 8230 int new_sysid; 8231 8232 /* Encode the cluster nodeid in new sysid */ 8233 new_sysid = sp->owner->client->sysidt; 8234 lm_set_nlmid_flk(&new_sysid); 8235 8236 /* 8237 * This PxFS routine removes file locks for a 8238 * client over all nodes of a cluster. 8239 */ 8240 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8241 "lm_remove_file_locks(sysid=0x%x)\n", 8242 new_sysid)); 8243 (*lm_remove_file_locks)(new_sysid); 8244 } else { 8245 struct flock64 flk; 8246 8247 /* Release all locks for this client */ 8248 flk.l_type = F_UNLKSYS; 8249 flk.l_whence = 0; 8250 flk.l_start = 0; 8251 flk.l_len = 0; 8252 flk.l_sysid = sp->owner->client->sysidt; 8253 flk.l_pid = 0; 8254 (void) VOP_FRLOCK(sp->finfo->vp, F_SETLK, &flk, 8255 F_REMOTELOCK | FREAD | FWRITE, 8256 (u_offset_t)0, NULL, CRED(), NULL); 8257 } 8258 8259 sp->owner->client->unlksys_completed = TRUE; 8260 } 8261 } 8262 8263 /* 8264 * Release all locks on this file by this lock owner or at 8265 * least mark the locks as having been released 8266 */ 8267 for (lsp = sp->lockownerlist.next->lsp; lsp != NULL; 8268 lsp = lsp->lockownerlist.next->lsp) { 8269 8270 lsp->locks_cleaned = TRUE; 8271 8272 /* Was this already taken care of above? */ 8273 if (!close_of_client && 8274 sp->owner->client->sysidt != LM_NOSYSID) 8275 (void) cleanlocks(sp->finfo->vp, lsp->locker->pid, 8276 lsp->locker->client->sysidt); 8277 } 8278 8279 /* 8280 * Release any shrlocks associated with this open state ID. 8281 * This must be done before the rfs4_state gets marked closed. 8282 */ 8283 if (sp->owner->client->sysidt != LM_NOSYSID) { 8284 shr.s_access = s_access; 8285 shr.s_deny = s_deny; 8286 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 8287 shr.s_sysid = sp->owner->client->sysidt; 8288 shr_loco.sl_pid = shr.s_pid; 8289 shr_loco.sl_id = shr.s_sysid; 8290 shr.s_owner = (caddr_t)&shr_loco; 8291 shr.s_own_len = sizeof (shr_loco); 8292 (void) vop_shrlock(sp->finfo->vp, F_UNSHARE, &shr, fflags); 8293 } 8294 8295 (void) VOP_CLOSE(fp->vp, fflags, 1, (offset_t)0, cr, NULL); 8296 } 8297 8298 /* 8299 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8300 */ 8301 static nfsstat4 8302 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8303 { 8304 rfs4_lockowner_t *lo; 8305 rfs4_client_t *cp; 8306 uint32_t len; 8307 8308 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8309 if (lo != NULL) { 8310 cp = lo->client; 8311 if (rfs4_lease_expired(cp)) { 8312 rfs4_lockowner_rele(lo); 8313 rfs4_dbe_hold(cp->dbe); 8314 rfs4_client_close(cp); 8315 return (NFS4ERR_EXPIRED); 8316 } 8317 dp->owner.clientid = lo->owner.clientid; 8318 len = lo->owner.owner_len; 8319 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8320 bcopy(lo->owner.owner_val, dp->owner.owner_val, len); 8321 dp->owner.owner_len = len; 8322 rfs4_lockowner_rele(lo); 8323 goto finish; 8324 } 8325 8326 /* 8327 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8328 * of the client id contain the boot time for a NFS4 lock. So we 8329 * fabricate and identity by setting clientid to the sysid, and 8330 * the lock owner to the pid. 8331 */ 8332 dp->owner.clientid = flk->l_sysid; 8333 len = sizeof (pid_t); 8334 dp->owner.owner_len = len; 8335 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8336 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8337 finish: 8338 dp->offset = flk->l_start; 8339 dp->length = flk->l_len; 8340 8341 if (flk->l_type == F_RDLCK) 8342 dp->locktype = READ_LT; 8343 else if (flk->l_type == F_WRLCK) 8344 dp->locktype = WRITE_LT; 8345 else 8346 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8347 8348 return (NFS4_OK); 8349 } 8350 8351 static int 8352 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8353 { 8354 int error; 8355 struct flock64 flk; 8356 int i; 8357 clock_t delaytime; 8358 int cmd; 8359 8360 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8361 retry: 8362 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8363 8364 for (i = 0; i < rfs4_maxlock_tries; i++) { 8365 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8366 error = VOP_FRLOCK(vp, cmd, 8367 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8368 8369 if (error != EAGAIN && error != EACCES) 8370 break; 8371 8372 if (i < rfs4_maxlock_tries - 1) { 8373 delay(delaytime); 8374 delaytime *= 2; 8375 } 8376 } 8377 8378 if (error == EAGAIN || error == EACCES) { 8379 /* Get the owner of the lock */ 8380 flk = *flock; 8381 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8382 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8383 (u_offset_t)0, NULL, cred, NULL) == 0) { 8384 if (flk.l_type == F_UNLCK) { 8385 /* No longer locked, retry */ 8386 goto retry; 8387 } 8388 *flock = flk; 8389 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8390 F_GETLK, &flk); 8391 } 8392 } 8393 8394 return (error); 8395 } 8396 8397 /*ARGSUSED*/ 8398 static nfsstat4 8399 rfs4_do_lock(rfs4_lo_state_t *lp, nfs_lock_type4 locktype, 8400 seqid4 seqid, offset4 offset, 8401 length4 length, cred_t *cred, nfs_resop4 *resop) 8402 { 8403 nfsstat4 status; 8404 rfs4_lockowner_t *lo = lp->locker; 8405 rfs4_state_t *sp = lp->state; 8406 struct flock64 flock; 8407 int16_t ltype; 8408 int flag; 8409 int error; 8410 sysid_t sysid; 8411 LOCK4res *lres; 8412 8413 if (rfs4_lease_expired(lo->client)) { 8414 return (NFS4ERR_EXPIRED); 8415 } 8416 8417 if ((status = rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 8418 return (status); 8419 8420 /* Check for zero length. To lock to end of file use all ones for V4 */ 8421 if (length == 0) 8422 return (NFS4ERR_INVAL); 8423 else if (length == (length4)(~0)) 8424 length = 0; /* Posix to end of file */ 8425 8426 retry: 8427 rfs4_dbe_lock(sp->dbe); 8428 8429 8430 if (resop->resop != OP_LOCKU) { 8431 switch (locktype) { 8432 case READ_LT: 8433 case READW_LT: 8434 if ((sp->share_access 8435 & OPEN4_SHARE_ACCESS_READ) == 0) { 8436 rfs4_dbe_unlock(sp->dbe); 8437 8438 return (NFS4ERR_OPENMODE); 8439 } 8440 ltype = F_RDLCK; 8441 break; 8442 case WRITE_LT: 8443 case WRITEW_LT: 8444 if ((sp->share_access 8445 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8446 rfs4_dbe_unlock(sp->dbe); 8447 8448 return (NFS4ERR_OPENMODE); 8449 } 8450 ltype = F_WRLCK; 8451 break; 8452 } 8453 } else 8454 ltype = F_UNLCK; 8455 8456 flock.l_type = ltype; 8457 flock.l_whence = 0; /* SEEK_SET */ 8458 flock.l_start = offset; 8459 flock.l_len = length; 8460 flock.l_sysid = sysid; 8461 flock.l_pid = lp->locker->pid; 8462 8463 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8464 if (flock.l_len < 0 || flock.l_start < 0) { 8465 rfs4_dbe_unlock(sp->dbe); 8466 return (NFS4ERR_INVAL); 8467 } 8468 8469 /* 8470 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8471 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8472 */ 8473 flag = (int)sp->share_access | F_REMOTELOCK; 8474 8475 error = setlock(sp->finfo->vp, &flock, flag, cred); 8476 if (error == 0) { 8477 rfs4_dbe_lock(lp->dbe); 8478 next_stateid(&lp->lockid); 8479 rfs4_dbe_unlock(lp->dbe); 8480 } 8481 8482 rfs4_dbe_unlock(sp->dbe); 8483 8484 /* 8485 * N.B. We map error values to nfsv4 errors. This is differrent 8486 * than puterrno4 routine. 8487 */ 8488 switch (error) { 8489 case 0: 8490 status = NFS4_OK; 8491 break; 8492 case EAGAIN: 8493 case EACCES: /* Old value */ 8494 /* Can only get here if op is OP_LOCK */ 8495 ASSERT(resop->resop == OP_LOCK); 8496 lres = &resop->nfs_resop4_u.oplock; 8497 status = NFS4ERR_DENIED; 8498 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8499 == NFS4ERR_EXPIRED) 8500 goto retry; 8501 break; 8502 case ENOLCK: 8503 status = NFS4ERR_DELAY; 8504 break; 8505 case EOVERFLOW: 8506 status = NFS4ERR_INVAL; 8507 break; 8508 case EINVAL: 8509 status = NFS4ERR_NOTSUPP; 8510 break; 8511 default: 8512 status = NFS4ERR_SERVERFAULT; 8513 break; 8514 } 8515 8516 return (status); 8517 } 8518 8519 /*ARGSUSED*/ 8520 void 8521 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8522 struct svc_req *req, struct compound_state *cs) 8523 { 8524 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8525 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8526 nfsstat4 status; 8527 stateid4 *stateid; 8528 rfs4_lockowner_t *lo; 8529 rfs4_client_t *cp; 8530 rfs4_state_t *sp = NULL; 8531 rfs4_lo_state_t *lsp = NULL; 8532 bool_t ls_sw_held = FALSE; 8533 bool_t create = TRUE; 8534 bool_t lcreate = TRUE; 8535 bool_t dup_lock = FALSE; 8536 int rc; 8537 8538 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8539 LOCK4args *, args); 8540 8541 if (cs->vp == NULL) { 8542 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8543 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8544 cs, LOCK4res *, resp); 8545 return; 8546 } 8547 8548 if (args->locker.new_lock_owner) { 8549 /* Create a new lockowner for this instance */ 8550 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8551 8552 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8553 8554 stateid = &olo->open_stateid; 8555 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8556 if (status != NFS4_OK) { 8557 NFS4_DEBUG(rfs4_debug, 8558 (CE_NOTE, "Get state failed in lock %d", status)); 8559 *cs->statusp = resp->status = status; 8560 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8561 cs, LOCK4res *, resp); 8562 return; 8563 } 8564 8565 /* Ensure specified filehandle matches */ 8566 if (cs->vp != sp->finfo->vp) { 8567 rfs4_state_rele(sp); 8568 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8569 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8570 cs, LOCK4res *, resp); 8571 return; 8572 } 8573 8574 /* hold off other access to open_owner while we tinker */ 8575 rfs4_sw_enter(&sp->owner->oo_sw); 8576 8577 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8578 case NFS4_CHECK_STATEID_OLD: 8579 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8580 goto end; 8581 case NFS4_CHECK_STATEID_BAD: 8582 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8583 goto end; 8584 case NFS4_CHECK_STATEID_EXPIRED: 8585 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8586 goto end; 8587 case NFS4_CHECK_STATEID_UNCONFIRMED: 8588 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8589 goto end; 8590 case NFS4_CHECK_STATEID_CLOSED: 8591 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8592 goto end; 8593 case NFS4_CHECK_STATEID_OKAY: 8594 case NFS4_CHECK_STATEID_REPLAY: 8595 switch (rfs4_check_olo_seqid(olo->open_seqid, 8596 sp->owner, resop)) { 8597 case NFS4_CHKSEQ_OKAY: 8598 if (rc == NFS4_CHECK_STATEID_OKAY) 8599 break; 8600 /* 8601 * This is replayed stateid; if seqid 8602 * matches next expected, then client 8603 * is using wrong seqid. 8604 */ 8605 /* FALLTHROUGH */ 8606 case NFS4_CHKSEQ_BAD: 8607 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8608 goto end; 8609 case NFS4_CHKSEQ_REPLAY: 8610 /* This is a duplicate LOCK request */ 8611 dup_lock = TRUE; 8612 8613 /* 8614 * For a duplicate we do not want to 8615 * create a new lockowner as it should 8616 * already exist. 8617 * Turn off the lockowner create flag. 8618 */ 8619 lcreate = FALSE; 8620 } 8621 break; 8622 } 8623 8624 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8625 if (lo == NULL) { 8626 NFS4_DEBUG(rfs4_debug, 8627 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8628 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8629 goto end; 8630 } 8631 8632 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8633 if (lsp == NULL) { 8634 rfs4_update_lease(sp->owner->client); 8635 /* 8636 * Only update theh open_seqid if this is not 8637 * a duplicate request 8638 */ 8639 if (dup_lock == FALSE) { 8640 rfs4_update_open_sequence(sp->owner); 8641 } 8642 8643 NFS4_DEBUG(rfs4_debug, 8644 (CE_NOTE, "rfs4_op_lock: no state")); 8645 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8646 rfs4_update_open_resp(sp->owner, resop, NULL); 8647 rfs4_lockowner_rele(lo); 8648 goto end; 8649 } 8650 8651 /* 8652 * This is the new_lock_owner branch and the client is 8653 * supposed to be associating a new lock_owner with 8654 * the open file at this point. If we find that a 8655 * lock_owner/state association already exists and a 8656 * successful LOCK request was returned to the client, 8657 * an error is returned to the client since this is 8658 * not appropriate. The client should be using the 8659 * existing lock_owner branch. 8660 */ 8661 if (dup_lock == FALSE && create == FALSE) { 8662 if (lsp->lock_completed == TRUE) { 8663 *cs->statusp = 8664 resp->status = NFS4ERR_BAD_SEQID; 8665 rfs4_lockowner_rele(lo); 8666 goto end; 8667 } 8668 } 8669 8670 rfs4_update_lease(sp->owner->client); 8671 8672 /* 8673 * Only update theh open_seqid if this is not 8674 * a duplicate request 8675 */ 8676 if (dup_lock == FALSE) { 8677 rfs4_update_open_sequence(sp->owner); 8678 } 8679 8680 /* 8681 * If this is a duplicate lock request, just copy the 8682 * previously saved reply and return. 8683 */ 8684 if (dup_lock == TRUE) { 8685 /* verify that lock_seqid's match */ 8686 if (lsp->seqid != olo->lock_seqid) { 8687 NFS4_DEBUG(rfs4_debug, 8688 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8689 "lsp->seqid=%d old->seqid=%d", 8690 lsp->seqid, olo->lock_seqid)); 8691 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8692 } else { 8693 rfs4_copy_reply(resop, lsp->reply); 8694 /* 8695 * Make sure to copy the just 8696 * retrieved reply status into the 8697 * overall compound status 8698 */ 8699 *cs->statusp = resp->status; 8700 } 8701 rfs4_lockowner_rele(lo); 8702 goto end; 8703 } 8704 8705 rfs4_dbe_lock(lsp->dbe); 8706 8707 /* Make sure to update the lock sequence id */ 8708 lsp->seqid = olo->lock_seqid; 8709 8710 NFS4_DEBUG(rfs4_debug, 8711 (CE_NOTE, "Lock seqid established as %d", lsp->seqid)); 8712 8713 /* 8714 * This is used to signify the newly created lockowner 8715 * stateid and its sequence number. The checks for 8716 * sequence number and increment don't occur on the 8717 * very first lock request for a lockowner. 8718 */ 8719 lsp->skip_seqid_check = TRUE; 8720 8721 /* hold off other access to lsp while we tinker */ 8722 rfs4_sw_enter(&lsp->ls_sw); 8723 ls_sw_held = TRUE; 8724 8725 rfs4_dbe_unlock(lsp->dbe); 8726 8727 rfs4_lockowner_rele(lo); 8728 } else { 8729 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8730 /* get lsp and hold the lock on the underlying file struct */ 8731 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8732 != NFS4_OK) { 8733 *cs->statusp = resp->status = status; 8734 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8735 cs, LOCK4res *, resp); 8736 return; 8737 } 8738 create = FALSE; /* We didn't create lsp */ 8739 8740 /* Ensure specified filehandle matches */ 8741 if (cs->vp != lsp->state->finfo->vp) { 8742 rfs4_lo_state_rele(lsp, TRUE); 8743 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8744 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8745 cs, LOCK4res *, resp); 8746 return; 8747 } 8748 8749 /* hold off other access to lsp while we tinker */ 8750 rfs4_sw_enter(&lsp->ls_sw); 8751 ls_sw_held = TRUE; 8752 8753 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8754 /* 8755 * The stateid looks like it was okay (expected to be 8756 * the next one) 8757 */ 8758 case NFS4_CHECK_STATEID_OKAY: 8759 /* 8760 * The sequence id is now checked. Determine 8761 * if this is a replay or if it is in the 8762 * expected (next) sequence. In the case of a 8763 * replay, there are two replay conditions 8764 * that may occur. The first is the normal 8765 * condition where a LOCK is done with a 8766 * NFS4_OK response and the stateid is 8767 * updated. That case is handled below when 8768 * the stateid is identified as a REPLAY. The 8769 * second is the case where an error is 8770 * returned, like NFS4ERR_DENIED, and the 8771 * sequence number is updated but the stateid 8772 * is not updated. This second case is dealt 8773 * with here. So it may seem odd that the 8774 * stateid is okay but the sequence id is a 8775 * replay but it is okay. 8776 */ 8777 switch (rfs4_check_lock_seqid( 8778 args->locker.locker4_u.lock_owner.lock_seqid, 8779 lsp, resop)) { 8780 case NFS4_CHKSEQ_REPLAY: 8781 if (resp->status != NFS4_OK) { 8782 /* 8783 * Here is our replay and need 8784 * to verify that the last 8785 * response was an error. 8786 */ 8787 *cs->statusp = resp->status; 8788 goto end; 8789 } 8790 /* 8791 * This is done since the sequence id 8792 * looked like a replay but it didn't 8793 * pass our check so a BAD_SEQID is 8794 * returned as a result. 8795 */ 8796 /*FALLTHROUGH*/ 8797 case NFS4_CHKSEQ_BAD: 8798 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8799 goto end; 8800 case NFS4_CHKSEQ_OKAY: 8801 /* Everything looks okay move ahead */ 8802 break; 8803 } 8804 break; 8805 case NFS4_CHECK_STATEID_OLD: 8806 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8807 goto end; 8808 case NFS4_CHECK_STATEID_BAD: 8809 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8810 goto end; 8811 case NFS4_CHECK_STATEID_EXPIRED: 8812 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8813 goto end; 8814 case NFS4_CHECK_STATEID_CLOSED: 8815 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8816 goto end; 8817 case NFS4_CHECK_STATEID_REPLAY: 8818 switch (rfs4_check_lock_seqid( 8819 args->locker.locker4_u.lock_owner.lock_seqid, 8820 lsp, resop)) { 8821 case NFS4_CHKSEQ_OKAY: 8822 /* 8823 * This is a replayed stateid; if 8824 * seqid matches the next expected, 8825 * then client is using wrong seqid. 8826 */ 8827 case NFS4_CHKSEQ_BAD: 8828 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8829 goto end; 8830 case NFS4_CHKSEQ_REPLAY: 8831 rfs4_update_lease(lsp->locker->client); 8832 *cs->statusp = status = resp->status; 8833 goto end; 8834 } 8835 break; 8836 default: 8837 ASSERT(FALSE); 8838 break; 8839 } 8840 8841 rfs4_update_lock_sequence(lsp); 8842 rfs4_update_lease(lsp->locker->client); 8843 } 8844 8845 /* 8846 * NFS4 only allows locking on regular files, so 8847 * verify type of object. 8848 */ 8849 if (cs->vp->v_type != VREG) { 8850 if (cs->vp->v_type == VDIR) 8851 status = NFS4ERR_ISDIR; 8852 else 8853 status = NFS4ERR_INVAL; 8854 goto out; 8855 } 8856 8857 cp = lsp->state->owner->client; 8858 8859 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 8860 status = NFS4ERR_GRACE; 8861 goto out; 8862 } 8863 8864 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->can_reclaim) { 8865 status = NFS4ERR_NO_GRACE; 8866 goto out; 8867 } 8868 8869 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 8870 status = NFS4ERR_NO_GRACE; 8871 goto out; 8872 } 8873 8874 if (lsp->state->finfo->dinfo->dtype == OPEN_DELEGATE_WRITE) 8875 cs->deleg = TRUE; 8876 8877 status = rfs4_do_lock(lsp, args->locktype, 8878 args->locker.locker4_u.lock_owner.lock_seqid, 8879 args->offset, args->length, cs->cr, resop); 8880 8881 out: 8882 lsp->skip_seqid_check = FALSE; 8883 8884 *cs->statusp = resp->status = status; 8885 8886 if (status == NFS4_OK) { 8887 resp->LOCK4res_u.lock_stateid = lsp->lockid.stateid; 8888 lsp->lock_completed = TRUE; 8889 } 8890 /* 8891 * Only update the "OPEN" response here if this was a new 8892 * lock_owner 8893 */ 8894 if (sp) 8895 rfs4_update_open_resp(sp->owner, resop, NULL); 8896 8897 rfs4_update_lock_resp(lsp, resop); 8898 8899 end: 8900 if (lsp) { 8901 if (ls_sw_held) 8902 rfs4_sw_exit(&lsp->ls_sw); 8903 /* 8904 * If an sp obtained, then the lsp does not represent 8905 * a lock on the file struct. 8906 */ 8907 if (sp != NULL) 8908 rfs4_lo_state_rele(lsp, FALSE); 8909 else 8910 rfs4_lo_state_rele(lsp, TRUE); 8911 } 8912 if (sp) { 8913 rfs4_sw_exit(&sp->owner->oo_sw); 8914 rfs4_state_rele(sp); 8915 } 8916 8917 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 8918 LOCK4res *, resp); 8919 } 8920 8921 /* free function for LOCK/LOCKT */ 8922 static void 8923 lock_denied_free(nfs_resop4 *resop) 8924 { 8925 LOCK4denied *dp = NULL; 8926 8927 switch (resop->resop) { 8928 case OP_LOCK: 8929 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 8930 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 8931 break; 8932 case OP_LOCKT: 8933 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 8934 dp = &resop->nfs_resop4_u.oplockt.denied; 8935 break; 8936 default: 8937 break; 8938 } 8939 8940 if (dp) 8941 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 8942 } 8943 8944 /*ARGSUSED*/ 8945 void 8946 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 8947 struct svc_req *req, struct compound_state *cs) 8948 { 8949 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 8950 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 8951 nfsstat4 status; 8952 stateid4 *stateid = &args->lock_stateid; 8953 rfs4_lo_state_t *lsp; 8954 8955 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 8956 LOCKU4args *, args); 8957 8958 if (cs->vp == NULL) { 8959 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8960 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8961 LOCKU4res *, resp); 8962 return; 8963 } 8964 8965 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 8966 *cs->statusp = resp->status = status; 8967 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8968 LOCKU4res *, resp); 8969 return; 8970 } 8971 8972 /* Ensure specified filehandle matches */ 8973 if (cs->vp != lsp->state->finfo->vp) { 8974 rfs4_lo_state_rele(lsp, TRUE); 8975 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8976 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 8977 LOCKU4res *, resp); 8978 return; 8979 } 8980 8981 /* hold off other access to lsp while we tinker */ 8982 rfs4_sw_enter(&lsp->ls_sw); 8983 8984 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8985 case NFS4_CHECK_STATEID_OKAY: 8986 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 8987 != NFS4_CHKSEQ_OKAY) { 8988 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8989 goto end; 8990 } 8991 break; 8992 case NFS4_CHECK_STATEID_OLD: 8993 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8994 goto end; 8995 case NFS4_CHECK_STATEID_BAD: 8996 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8997 goto end; 8998 case NFS4_CHECK_STATEID_EXPIRED: 8999 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9000 goto end; 9001 case NFS4_CHECK_STATEID_CLOSED: 9002 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9003 goto end; 9004 case NFS4_CHECK_STATEID_REPLAY: 9005 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9006 case NFS4_CHKSEQ_OKAY: 9007 /* 9008 * This is a replayed stateid; if 9009 * seqid matches the next expected, 9010 * then client is using wrong seqid. 9011 */ 9012 case NFS4_CHKSEQ_BAD: 9013 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9014 goto end; 9015 case NFS4_CHKSEQ_REPLAY: 9016 rfs4_update_lease(lsp->locker->client); 9017 *cs->statusp = status = resp->status; 9018 goto end; 9019 } 9020 break; 9021 default: 9022 ASSERT(FALSE); 9023 break; 9024 } 9025 9026 rfs4_update_lock_sequence(lsp); 9027 rfs4_update_lease(lsp->locker->client); 9028 9029 /* 9030 * NFS4 only allows locking on regular files, so 9031 * verify type of object. 9032 */ 9033 if (cs->vp->v_type != VREG) { 9034 if (cs->vp->v_type == VDIR) 9035 status = NFS4ERR_ISDIR; 9036 else 9037 status = NFS4ERR_INVAL; 9038 goto out; 9039 } 9040 9041 if (rfs4_clnt_in_grace(lsp->state->owner->client)) { 9042 status = NFS4ERR_GRACE; 9043 goto out; 9044 } 9045 9046 status = rfs4_do_lock(lsp, args->locktype, 9047 args->seqid, args->offset, args->length, cs->cr, resop); 9048 9049 out: 9050 *cs->statusp = resp->status = status; 9051 9052 if (status == NFS4_OK) 9053 resp->lock_stateid = lsp->lockid.stateid; 9054 9055 rfs4_update_lock_resp(lsp, resop); 9056 9057 end: 9058 rfs4_sw_exit(&lsp->ls_sw); 9059 rfs4_lo_state_rele(lsp, TRUE); 9060 9061 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9062 LOCKU4res *, resp); 9063 } 9064 9065 /* 9066 * LOCKT is a best effort routine, the client can not be guaranteed that 9067 * the status return is still in effect by the time the reply is received. 9068 * They are numerous race conditions in this routine, but we are not required 9069 * and can not be accurate. 9070 */ 9071 /*ARGSUSED*/ 9072 void 9073 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9074 struct svc_req *req, struct compound_state *cs) 9075 { 9076 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9077 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9078 rfs4_lockowner_t *lo; 9079 rfs4_client_t *cp; 9080 bool_t create = FALSE; 9081 struct flock64 flk; 9082 int error; 9083 int flag = FREAD | FWRITE; 9084 int ltype; 9085 length4 posix_length; 9086 sysid_t sysid; 9087 pid_t pid; 9088 9089 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9090 LOCKT4args *, args); 9091 9092 if (cs->vp == NULL) { 9093 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9094 goto out; 9095 } 9096 9097 /* 9098 * NFS4 only allows locking on regular files, so 9099 * verify type of object. 9100 */ 9101 if (cs->vp->v_type != VREG) { 9102 if (cs->vp->v_type == VDIR) 9103 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9104 else 9105 *cs->statusp = resp->status = NFS4ERR_INVAL; 9106 goto out; 9107 } 9108 9109 /* 9110 * Check out the clientid to ensure the server knows about it 9111 * so that we correctly inform the client of a server reboot. 9112 */ 9113 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9114 == NULL) { 9115 *cs->statusp = resp->status = 9116 rfs4_check_clientid(&args->owner.clientid, 0); 9117 goto out; 9118 } 9119 if (rfs4_lease_expired(cp)) { 9120 rfs4_client_close(cp); 9121 /* 9122 * Protocol doesn't allow returning NFS4ERR_STALE as 9123 * other operations do on this check so STALE_CLIENTID 9124 * is returned instead 9125 */ 9126 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9127 goto out; 9128 } 9129 9130 if (rfs4_clnt_in_grace(cp) && !(cp->can_reclaim)) { 9131 *cs->statusp = resp->status = NFS4ERR_GRACE; 9132 rfs4_client_rele(cp); 9133 goto out; 9134 } 9135 rfs4_client_rele(cp); 9136 9137 resp->status = NFS4_OK; 9138 9139 switch (args->locktype) { 9140 case READ_LT: 9141 case READW_LT: 9142 ltype = F_RDLCK; 9143 break; 9144 case WRITE_LT: 9145 case WRITEW_LT: 9146 ltype = F_WRLCK; 9147 break; 9148 } 9149 9150 posix_length = args->length; 9151 /* Check for zero length. To lock to end of file use all ones for V4 */ 9152 if (posix_length == 0) { 9153 *cs->statusp = resp->status = NFS4ERR_INVAL; 9154 goto out; 9155 } else if (posix_length == (length4)(~0)) { 9156 posix_length = 0; /* Posix to end of file */ 9157 } 9158 9159 /* Find or create a lockowner */ 9160 lo = rfs4_findlockowner(&args->owner, &create); 9161 9162 if (lo) { 9163 pid = lo->pid; 9164 if ((resp->status = 9165 rfs4_client_sysid(lo->client, &sysid)) != NFS4_OK) 9166 goto err; 9167 } else { 9168 pid = 0; 9169 sysid = lockt_sysid; 9170 } 9171 retry: 9172 flk.l_type = ltype; 9173 flk.l_whence = 0; /* SEEK_SET */ 9174 flk.l_start = args->offset; 9175 flk.l_len = posix_length; 9176 flk.l_sysid = sysid; 9177 flk.l_pid = pid; 9178 flag |= F_REMOTELOCK; 9179 9180 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9181 9182 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9183 if (flk.l_len < 0 || flk.l_start < 0) { 9184 resp->status = NFS4ERR_INVAL; 9185 goto err; 9186 } 9187 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9188 NULL, cs->cr, NULL); 9189 9190 /* 9191 * N.B. We map error values to nfsv4 errors. This is differrent 9192 * than puterrno4 routine. 9193 */ 9194 switch (error) { 9195 case 0: 9196 if (flk.l_type == F_UNLCK) 9197 resp->status = NFS4_OK; 9198 else { 9199 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9200 goto retry; 9201 resp->status = NFS4ERR_DENIED; 9202 } 9203 break; 9204 case EOVERFLOW: 9205 resp->status = NFS4ERR_INVAL; 9206 break; 9207 case EINVAL: 9208 resp->status = NFS4ERR_NOTSUPP; 9209 break; 9210 default: 9211 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9212 error); 9213 resp->status = NFS4ERR_SERVERFAULT; 9214 break; 9215 } 9216 9217 err: 9218 if (lo) 9219 rfs4_lockowner_rele(lo); 9220 *cs->statusp = resp->status; 9221 out: 9222 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9223 LOCKT4res *, resp); 9224 } 9225 9226 static int 9227 vop_shrlock(vnode_t *vp, int cmd, struct shrlock *sp, int fflags) 9228 { 9229 int err; 9230 9231 if (cmd == F_UNSHARE && sp->s_deny == 0 && sp->s_access == 0) 9232 return (0); 9233 9234 err = VOP_SHRLOCK(vp, cmd, sp, fflags, CRED(), NULL); 9235 9236 NFS4_DEBUG(rfs4_shrlock_debug, 9237 (CE_NOTE, "rfs4_shrlock %s vp=%p acc=%d dny=%d sysid=%d " 9238 "pid=%d err=%d\n", cmd == F_UNSHARE ? "UNSHR" : "SHARE", 9239 (void *) vp, sp->s_access, sp->s_deny, sp->s_sysid, sp->s_pid, 9240 err)); 9241 9242 return (err); 9243 } 9244 9245 static int 9246 rfs4_shrlock(rfs4_state_t *sp, int cmd) 9247 { 9248 struct shrlock shr; 9249 struct shr_locowner shr_loco; 9250 int fflags; 9251 9252 fflags = shr.s_access = shr.s_deny = 0; 9253 9254 if (sp->share_access & OPEN4_SHARE_ACCESS_READ) { 9255 fflags |= FREAD; 9256 shr.s_access |= F_RDACC; 9257 } 9258 if (sp->share_access & OPEN4_SHARE_ACCESS_WRITE) { 9259 fflags |= FWRITE; 9260 shr.s_access |= F_WRACC; 9261 } 9262 if (sp->share_deny & OPEN4_SHARE_DENY_READ) 9263 shr.s_deny |= F_RDDNY; 9264 if (sp->share_deny & OPEN4_SHARE_DENY_WRITE) 9265 shr.s_deny |= F_WRDNY; 9266 9267 shr.s_pid = rfs4_dbe_getid(sp->owner->dbe); 9268 shr.s_sysid = sp->owner->client->sysidt; 9269 shr_loco.sl_pid = shr.s_pid; 9270 shr_loco.sl_id = shr.s_sysid; 9271 shr.s_owner = (caddr_t)&shr_loco; 9272 shr.s_own_len = sizeof (shr_loco); 9273 return (vop_shrlock(sp->finfo->vp, cmd, &shr, fflags)); 9274 } 9275 9276 static int 9277 rfs4_share(rfs4_state_t *sp) 9278 { 9279 int cmd; 9280 cmd = nbl_need_check(sp->finfo->vp) ? F_SHARE_NBMAND : F_SHARE; 9281 return (rfs4_shrlock(sp, cmd)); 9282 } 9283 9284 void 9285 rfs4_unshare(rfs4_state_t *sp) 9286 { 9287 (void) rfs4_shrlock(sp, F_UNSHARE); 9288 } 9289 9290 static int 9291 rdma_setup_read_data4(READ4args * args, READ4res * rok) 9292 { 9293 struct clist *wcl; 9294 int data_len, avail_len, num; 9295 count4 count = rok->data_len; 9296 9297 data_len = num = avail_len = 0; 9298 9299 wcl = args->wlist; 9300 while (wcl != NULL) { 9301 if (wcl->c_dmemhandle.mrc_rmr == 0) 9302 break; 9303 9304 avail_len += wcl->c_len; 9305 if (wcl->c_len < count) { 9306 data_len += wcl->c_len; 9307 } else { 9308 /* Can make the rest chunks all 0-len */ 9309 data_len += count; 9310 wcl->c_len = count; 9311 } 9312 count -= wcl->c_len; 9313 num++; 9314 wcl = wcl->c_next; 9315 } 9316 9317 /* 9318 * MUST fail if there are still more data 9319 */ 9320 if (count > 0) { 9321 DTRACE_PROBE2(nfss__e__read4_wlist_fail, 9322 int, data_len, int, count); 9323 return (FALSE); 9324 } 9325 wcl = args->wlist; 9326 rok->data_len = data_len; 9327 rok->wlist_len = data_len; 9328 rok->wlist = wcl; 9329 9330 return (TRUE); 9331 } 9332