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