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 2010 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 28 * All Rights Reserved 29 */ 30 31 #include <sys/param.h> 32 #include <sys/types.h> 33 #include <sys/systm.h> 34 #include <sys/cred.h> 35 #include <sys/buf.h> 36 #include <sys/vfs.h> 37 #include <sys/vfs_opreg.h> 38 #include <sys/vnode.h> 39 #include <sys/uio.h> 40 #include <sys/errno.h> 41 #include <sys/sysmacros.h> 42 #include <sys/statvfs.h> 43 #include <sys/kmem.h> 44 #include <sys/dirent.h> 45 #include <sys/cmn_err.h> 46 #include <sys/debug.h> 47 #include <sys/systeminfo.h> 48 #include <sys/flock.h> 49 #include <sys/pathname.h> 50 #include <sys/nbmlock.h> 51 #include <sys/share.h> 52 #include <sys/atomic.h> 53 #include <sys/policy.h> 54 #include <sys/fem.h> 55 #include <sys/sdt.h> 56 #include <sys/ddi.h> 57 #include <sys/zone.h> 58 59 #include <fs/fs_reparse.h> 60 61 #include <rpc/types.h> 62 #include <rpc/auth.h> 63 #include <rpc/rpcsec_gss.h> 64 #include <rpc/svc.h> 65 66 #include <nfs/nfs.h> 67 #include <nfs/export.h> 68 #include <nfs/nfs_cmd.h> 69 #include <nfs/lm.h> 70 #include <nfs/nfs4.h> 71 72 #include <sys/strsubr.h> 73 #include <sys/strsun.h> 74 75 #include <inet/common.h> 76 #include <inet/ip.h> 77 #include <inet/ip6.h> 78 79 #include <sys/tsol/label.h> 80 #include <sys/tsol/tndb.h> 81 82 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 83 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 84 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 85 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 86 extern struct svc_ops rdma_svc_ops; 87 extern int nfs_loaned_buffers; 88 /* End of Tunables */ 89 90 static int rdma_setup_read_data4(READ4args *, READ4res *); 91 92 /* 93 * Used to bump the stateid4.seqid value and show changes in the stateid 94 */ 95 #define next_stateid(sp) (++(sp)->bits.chgseq) 96 97 /* 98 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 99 * This is used to return NFS4ERR_TOOSMALL when clients specify 100 * maxcount that isn't large enough to hold the smallest possible 101 * XDR encoded dirent. 102 * 103 * sizeof cookie (8 bytes) + 104 * sizeof name_len (4 bytes) + 105 * sizeof smallest (padded) name (4 bytes) + 106 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 107 * sizeof attrlist4_len (4 bytes) + 108 * sizeof next boolean (4 bytes) 109 * 110 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 111 * the smallest possible entry4 (assumes no attrs requested). 112 * sizeof nfsstat4 (4 bytes) + 113 * sizeof verifier4 (8 bytes) + 114 * sizeof entry4list bool (4 bytes) + 115 * sizeof entry4 (36 bytes) + 116 * sizeof eof bool (4 bytes) 117 * 118 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 119 * VOP_READDIR. Its value is the size of the maximum possible dirent 120 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 121 * required for a given name length. MAXNAMELEN is the maximum 122 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 123 * macros are to allow for . and .. entries -- just a minor tweak to try 124 * and guarantee that buffer we give to VOP_READDIR will be large enough 125 * to hold ., .., and the largest possible solaris dirent64. 126 */ 127 #define RFS4_MINLEN_ENTRY4 36 128 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 129 #define RFS4_MINLEN_RDDIR_BUF \ 130 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 131 132 /* 133 * It would be better to pad to 4 bytes since that's what XDR would do, 134 * but the dirents UFS gives us are already padded to 8, so just take 135 * what we're given. Dircount is only a hint anyway. Currently the 136 * solaris kernel is ASCII only, so there's no point in calling the 137 * UTF8 functions. 138 * 139 * dirent64: named padded to provide 8 byte struct alignment 140 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 141 * 142 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 143 * 144 */ 145 #define DIRENT64_TO_DIRCOUNT(dp) \ 146 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 147 148 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 149 150 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 151 152 u_longlong_t nfs4_srv_caller_id; 153 uint_t nfs4_srv_vkey = 0; 154 155 verifier4 Write4verf; 156 verifier4 Readdir4verf; 157 158 void rfs4_init_compound_state(struct compound_state *); 159 160 static void nullfree(caddr_t); 161 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 162 struct compound_state *); 163 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 164 struct compound_state *); 165 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 166 struct compound_state *); 167 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 168 struct compound_state *); 169 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 170 struct compound_state *); 171 static void rfs4_op_create_free(nfs_resop4 *resop); 172 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 173 struct svc_req *, struct compound_state *); 174 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 175 struct svc_req *, struct compound_state *); 176 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 177 struct compound_state *); 178 static void rfs4_op_getattr_free(nfs_resop4 *); 179 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 180 struct compound_state *); 181 static void rfs4_op_getfh_free(nfs_resop4 *); 182 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 183 struct compound_state *); 184 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 185 struct compound_state *); 186 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 187 struct compound_state *); 188 static void lock_denied_free(nfs_resop4 *); 189 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 190 struct compound_state *); 191 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 192 struct compound_state *); 193 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 194 struct compound_state *); 195 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 196 struct compound_state *); 197 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 198 struct svc_req *req, struct compound_state *cs); 199 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 200 struct compound_state *); 201 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 202 struct compound_state *); 203 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 204 struct svc_req *, struct compound_state *); 205 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 206 struct svc_req *, struct compound_state *); 207 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 208 struct compound_state *); 209 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 210 struct compound_state *); 211 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 212 struct compound_state *); 213 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 214 struct compound_state *); 215 static void rfs4_op_read_free(nfs_resop4 *); 216 static void rfs4_op_readdir_free(nfs_resop4 *resop); 217 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 218 struct compound_state *); 219 static void rfs4_op_readlink_free(nfs_resop4 *); 220 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 221 struct svc_req *, struct compound_state *); 222 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 223 struct compound_state *); 224 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 225 struct compound_state *); 226 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 227 struct compound_state *); 228 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 229 struct compound_state *); 230 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 231 struct compound_state *); 232 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 233 struct compound_state *); 234 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 235 struct compound_state *); 236 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 237 struct compound_state *); 238 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 239 struct svc_req *, struct compound_state *); 240 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 241 struct svc_req *req, struct compound_state *); 242 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 243 struct compound_state *); 244 static void rfs4_op_secinfo_free(nfs_resop4 *); 245 246 static nfsstat4 check_open_access(uint32_t, 247 struct compound_state *, struct svc_req *); 248 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 249 void rfs4_ss_clid(rfs4_client_t *); 250 251 /* 252 * translation table for attrs 253 */ 254 struct nfs4_ntov_table { 255 union nfs4_attr_u *na; 256 uint8_t amap[NFS4_MAXNUM_ATTRS]; 257 int attrcnt; 258 bool_t vfsstat; 259 }; 260 261 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 262 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 263 struct nfs4_svgetit_arg *sargp); 264 265 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 266 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 267 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 268 269 fem_t *deleg_rdops; 270 fem_t *deleg_wrops; 271 272 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 273 kmutex_t rfs4_servinst_lock; /* protects linked list */ 274 int rfs4_seen_first_compound; /* set first time we see one */ 275 276 /* 277 * NFS4 op dispatch table 278 */ 279 280 struct rfsv4disp { 281 void (*dis_proc)(); /* proc to call */ 282 void (*dis_resfree)(); /* frees space allocated by proc */ 283 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 284 }; 285 286 static struct rfsv4disp rfsv4disptab[] = { 287 /* 288 * NFS VERSION 4 289 */ 290 291 /* RFS_NULL = 0 */ 292 {rfs4_op_illegal, nullfree, 0}, 293 294 /* UNUSED = 1 */ 295 {rfs4_op_illegal, nullfree, 0}, 296 297 /* UNUSED = 2 */ 298 {rfs4_op_illegal, nullfree, 0}, 299 300 /* OP_ACCESS = 3 */ 301 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 302 303 /* OP_CLOSE = 4 */ 304 {rfs4_op_close, nullfree, 0}, 305 306 /* OP_COMMIT = 5 */ 307 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 308 309 /* OP_CREATE = 6 */ 310 {rfs4_op_create, nullfree, 0}, 311 312 /* OP_DELEGPURGE = 7 */ 313 {rfs4_op_delegpurge, nullfree, 0}, 314 315 /* OP_DELEGRETURN = 8 */ 316 {rfs4_op_delegreturn, nullfree, 0}, 317 318 /* OP_GETATTR = 9 */ 319 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 320 321 /* OP_GETFH = 10 */ 322 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 323 324 /* OP_LINK = 11 */ 325 {rfs4_op_link, nullfree, 0}, 326 327 /* OP_LOCK = 12 */ 328 {rfs4_op_lock, lock_denied_free, 0}, 329 330 /* OP_LOCKT = 13 */ 331 {rfs4_op_lockt, lock_denied_free, 0}, 332 333 /* OP_LOCKU = 14 */ 334 {rfs4_op_locku, nullfree, 0}, 335 336 /* OP_LOOKUP = 15 */ 337 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 338 339 /* OP_LOOKUPP = 16 */ 340 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 341 342 /* OP_NVERIFY = 17 */ 343 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 344 345 /* OP_OPEN = 18 */ 346 {rfs4_op_open, rfs4_free_reply, 0}, 347 348 /* OP_OPENATTR = 19 */ 349 {rfs4_op_openattr, nullfree, 0}, 350 351 /* OP_OPEN_CONFIRM = 20 */ 352 {rfs4_op_open_confirm, nullfree, 0}, 353 354 /* OP_OPEN_DOWNGRADE = 21 */ 355 {rfs4_op_open_downgrade, nullfree, 0}, 356 357 /* OP_OPEN_PUTFH = 22 */ 358 {rfs4_op_putfh, nullfree, RPC_ALL}, 359 360 /* OP_PUTPUBFH = 23 */ 361 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 362 363 /* OP_PUTROOTFH = 24 */ 364 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 365 366 /* OP_READ = 25 */ 367 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 368 369 /* OP_READDIR = 26 */ 370 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 371 372 /* OP_READLINK = 27 */ 373 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 374 375 /* OP_REMOVE = 28 */ 376 {rfs4_op_remove, nullfree, 0}, 377 378 /* OP_RENAME = 29 */ 379 {rfs4_op_rename, nullfree, 0}, 380 381 /* OP_RENEW = 30 */ 382 {rfs4_op_renew, nullfree, 0}, 383 384 /* OP_RESTOREFH = 31 */ 385 {rfs4_op_restorefh, nullfree, RPC_ALL}, 386 387 /* OP_SAVEFH = 32 */ 388 {rfs4_op_savefh, nullfree, RPC_ALL}, 389 390 /* OP_SECINFO = 33 */ 391 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 392 393 /* OP_SETATTR = 34 */ 394 {rfs4_op_setattr, nullfree, 0}, 395 396 /* OP_SETCLIENTID = 35 */ 397 {rfs4_op_setclientid, nullfree, 0}, 398 399 /* OP_SETCLIENTID_CONFIRM = 36 */ 400 {rfs4_op_setclientid_confirm, nullfree, 0}, 401 402 /* OP_VERIFY = 37 */ 403 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 404 405 /* OP_WRITE = 38 */ 406 {rfs4_op_write, nullfree, 0}, 407 408 /* OP_RELEASE_LOCKOWNER = 39 */ 409 {rfs4_op_release_lockowner, nullfree, 0}, 410 }; 411 412 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 413 414 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 415 416 #ifdef DEBUG 417 418 int rfs4_fillone_debug = 0; 419 int rfs4_no_stub_access = 1; 420 int rfs4_rddir_debug = 0; 421 422 static char *rfs4_op_string[] = { 423 "rfs4_op_null", 424 "rfs4_op_1 unused", 425 "rfs4_op_2 unused", 426 "rfs4_op_access", 427 "rfs4_op_close", 428 "rfs4_op_commit", 429 "rfs4_op_create", 430 "rfs4_op_delegpurge", 431 "rfs4_op_delegreturn", 432 "rfs4_op_getattr", 433 "rfs4_op_getfh", 434 "rfs4_op_link", 435 "rfs4_op_lock", 436 "rfs4_op_lockt", 437 "rfs4_op_locku", 438 "rfs4_op_lookup", 439 "rfs4_op_lookupp", 440 "rfs4_op_nverify", 441 "rfs4_op_open", 442 "rfs4_op_openattr", 443 "rfs4_op_open_confirm", 444 "rfs4_op_open_downgrade", 445 "rfs4_op_putfh", 446 "rfs4_op_putpubfh", 447 "rfs4_op_putrootfh", 448 "rfs4_op_read", 449 "rfs4_op_readdir", 450 "rfs4_op_readlink", 451 "rfs4_op_remove", 452 "rfs4_op_rename", 453 "rfs4_op_renew", 454 "rfs4_op_restorefh", 455 "rfs4_op_savefh", 456 "rfs4_op_secinfo", 457 "rfs4_op_setattr", 458 "rfs4_op_setclientid", 459 "rfs4_op_setclient_confirm", 460 "rfs4_op_verify", 461 "rfs4_op_write", 462 "rfs4_op_release_lockowner", 463 "rfs4_op_illegal" 464 }; 465 #endif 466 467 void rfs4_ss_chkclid(rfs4_client_t *); 468 469 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 470 471 extern void rfs4_free_fs_locations4(fs_locations4 *); 472 473 #ifdef nextdp 474 #undef nextdp 475 #endif 476 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 477 478 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 479 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 480 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 481 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 482 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 483 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 484 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 485 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 486 NULL, NULL 487 }; 488 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 489 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 490 VOPNAME_READ, { .femop_read = deleg_wr_read }, 491 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 492 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 493 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 494 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 495 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 496 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 497 NULL, NULL 498 }; 499 500 int 501 rfs4_srvrinit(void) 502 { 503 timespec32_t verf; 504 int error; 505 extern void rfs4_attr_init(); 506 extern krwlock_t rfs4_deleg_policy_lock; 507 508 /* 509 * The following algorithm attempts to find a unique verifier 510 * to be used as the write verifier returned from the server 511 * to the client. It is important that this verifier change 512 * whenever the server reboots. Of secondary importance, it 513 * is important for the verifier to be unique between two 514 * different servers. 515 * 516 * Thus, an attempt is made to use the system hostid and the 517 * current time in seconds when the nfssrv kernel module is 518 * loaded. It is assumed that an NFS server will not be able 519 * to boot and then to reboot in less than a second. If the 520 * hostid has not been set, then the current high resolution 521 * time is used. This will ensure different verifiers each 522 * time the server reboots and minimize the chances that two 523 * different servers will have the same verifier. 524 * XXX - this is broken on LP64 kernels. 525 */ 526 verf.tv_sec = (time_t)zone_get_hostid(NULL); 527 if (verf.tv_sec != 0) { 528 verf.tv_nsec = gethrestime_sec(); 529 } else { 530 timespec_t tverf; 531 532 gethrestime(&tverf); 533 verf.tv_sec = (time_t)tverf.tv_sec; 534 verf.tv_nsec = tverf.tv_nsec; 535 } 536 537 Write4verf = *(uint64_t *)&verf; 538 539 rfs4_attr_init(); 540 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 541 542 /* Used to manage create/destroy of server state */ 543 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 544 545 /* Used to manage access to server instance linked list */ 546 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 547 548 /* Used to manage access to rfs4_deleg_policy */ 549 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 550 551 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 552 if (error != 0) { 553 rfs4_disable_delegation(); 554 } else { 555 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 556 &deleg_wrops); 557 if (error != 0) { 558 rfs4_disable_delegation(); 559 fem_free(deleg_rdops); 560 } 561 } 562 563 nfs4_srv_caller_id = fs_new_caller_id(); 564 565 lockt_sysid = lm_alloc_sysidt(); 566 567 vsd_create(&nfs4_srv_vkey, NULL); 568 569 return (0); 570 } 571 572 void 573 rfs4_srvrfini(void) 574 { 575 extern krwlock_t rfs4_deleg_policy_lock; 576 577 if (lockt_sysid != LM_NOSYSID) { 578 lm_free_sysidt(lockt_sysid); 579 lockt_sysid = LM_NOSYSID; 580 } 581 582 mutex_destroy(&rfs4_deleg_lock); 583 mutex_destroy(&rfs4_state_lock); 584 rw_destroy(&rfs4_deleg_policy_lock); 585 586 fem_free(deleg_rdops); 587 fem_free(deleg_wrops); 588 } 589 590 void 591 rfs4_init_compound_state(struct compound_state *cs) 592 { 593 bzero(cs, sizeof (*cs)); 594 cs->cont = TRUE; 595 cs->access = CS_ACCESS_DENIED; 596 cs->deleg = FALSE; 597 cs->mandlock = FALSE; 598 cs->fh.nfs_fh4_val = cs->fhbuf; 599 } 600 601 void 602 rfs4_grace_start(rfs4_servinst_t *sip) 603 { 604 rw_enter(&sip->rwlock, RW_WRITER); 605 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); 606 sip->grace_period = rfs4_grace_period; 607 rw_exit(&sip->rwlock); 608 } 609 610 /* 611 * returns true if the instance's grace period has never been started 612 */ 613 int 614 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 615 { 616 time_t start_time; 617 618 rw_enter(&sip->rwlock, RW_READER); 619 start_time = sip->start_time; 620 rw_exit(&sip->rwlock); 621 622 return (start_time == 0); 623 } 624 625 /* 626 * Indicates if server instance is within the 627 * grace period. 628 */ 629 int 630 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 631 { 632 time_t grace_expiry; 633 634 rw_enter(&sip->rwlock, RW_READER); 635 grace_expiry = sip->start_time + sip->grace_period; 636 rw_exit(&sip->rwlock); 637 638 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); 639 } 640 641 int 642 rfs4_clnt_in_grace(rfs4_client_t *cp) 643 { 644 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 645 646 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 647 } 648 649 /* 650 * reset all currently active grace periods 651 */ 652 void 653 rfs4_grace_reset_all(void) 654 { 655 rfs4_servinst_t *sip; 656 657 mutex_enter(&rfs4_servinst_lock); 658 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 659 if (rfs4_servinst_in_grace(sip)) 660 rfs4_grace_start(sip); 661 mutex_exit(&rfs4_servinst_lock); 662 } 663 664 /* 665 * start any new instances' grace periods 666 */ 667 void 668 rfs4_grace_start_new(void) 669 { 670 rfs4_servinst_t *sip; 671 672 mutex_enter(&rfs4_servinst_lock); 673 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 674 if (rfs4_servinst_grace_new(sip)) 675 rfs4_grace_start(sip); 676 mutex_exit(&rfs4_servinst_lock); 677 } 678 679 static rfs4_dss_path_t * 680 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 681 { 682 size_t len; 683 rfs4_dss_path_t *dss_path; 684 685 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 686 687 /* 688 * Take a copy of the string, since the original may be overwritten. 689 * Sadly, no strdup() in the kernel. 690 */ 691 /* allow for NUL */ 692 len = strlen(path) + 1; 693 dss_path->path = kmem_alloc(len, KM_SLEEP); 694 (void) strlcpy(dss_path->path, path, len); 695 696 /* associate with servinst */ 697 dss_path->sip = sip; 698 dss_path->index = index; 699 700 /* 701 * Add to list of served paths. 702 * No locking required, as we're only ever called at startup. 703 */ 704 if (rfs4_dss_pathlist == NULL) { 705 /* this is the first dss_path_t */ 706 707 /* needed for insque/remque */ 708 dss_path->next = dss_path->prev = dss_path; 709 710 rfs4_dss_pathlist = dss_path; 711 } else { 712 insque(dss_path, rfs4_dss_pathlist); 713 } 714 715 return (dss_path); 716 } 717 718 /* 719 * Create a new server instance, and make it the currently active instance. 720 * Note that starting the grace period too early will reduce the clients' 721 * recovery window. 722 */ 723 void 724 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 725 { 726 unsigned i; 727 rfs4_servinst_t *sip; 728 rfs4_oldstate_t *oldstate; 729 730 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 731 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 732 733 sip->start_time = (time_t)0; 734 sip->grace_period = (time_t)0; 735 sip->next = NULL; 736 sip->prev = NULL; 737 738 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 739 /* 740 * This initial dummy entry is required to setup for insque/remque. 741 * It must be skipped over whenever the list is traversed. 742 */ 743 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 744 /* insque/remque require initial list entry to be self-terminated */ 745 oldstate->next = oldstate; 746 oldstate->prev = oldstate; 747 sip->oldstate = oldstate; 748 749 750 sip->dss_npaths = dss_npaths; 751 sip->dss_paths = kmem_alloc(dss_npaths * 752 sizeof (rfs4_dss_path_t *), KM_SLEEP); 753 754 for (i = 0; i < dss_npaths; i++) { 755 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 756 } 757 758 mutex_enter(&rfs4_servinst_lock); 759 if (rfs4_cur_servinst != NULL) { 760 /* add to linked list */ 761 sip->prev = rfs4_cur_servinst; 762 rfs4_cur_servinst->next = sip; 763 } 764 if (start_grace) 765 rfs4_grace_start(sip); 766 /* make the new instance "current" */ 767 rfs4_cur_servinst = sip; 768 769 mutex_exit(&rfs4_servinst_lock); 770 } 771 772 /* 773 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 774 * all instances directly. 775 */ 776 void 777 rfs4_servinst_destroy_all(void) 778 { 779 rfs4_servinst_t *sip, *prev, *current; 780 #ifdef DEBUG 781 int n = 0; 782 #endif 783 784 mutex_enter(&rfs4_servinst_lock); 785 ASSERT(rfs4_cur_servinst != NULL); 786 current = rfs4_cur_servinst; 787 rfs4_cur_servinst = NULL; 788 for (sip = current; sip != NULL; sip = prev) { 789 prev = sip->prev; 790 rw_destroy(&sip->rwlock); 791 if (sip->oldstate) 792 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 793 if (sip->dss_paths) 794 kmem_free(sip->dss_paths, 795 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 796 kmem_free(sip, sizeof (rfs4_servinst_t)); 797 #ifdef DEBUG 798 n++; 799 #endif 800 } 801 mutex_exit(&rfs4_servinst_lock); 802 } 803 804 /* 805 * Assign the current server instance to a client_t. 806 * Should be called with cp->rc_dbe held. 807 */ 808 void 809 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 810 { 811 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 812 813 /* 814 * The lock ensures that if the current instance is in the process 815 * of changing, we will see the new one. 816 */ 817 mutex_enter(&rfs4_servinst_lock); 818 cp->rc_server_instance = sip; 819 mutex_exit(&rfs4_servinst_lock); 820 } 821 822 rfs4_servinst_t * 823 rfs4_servinst(rfs4_client_t *cp) 824 { 825 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 826 827 return (cp->rc_server_instance); 828 } 829 830 /* ARGSUSED */ 831 static void 832 nullfree(caddr_t resop) 833 { 834 } 835 836 /* 837 * This is a fall-through for invalid or not implemented (yet) ops 838 */ 839 /* ARGSUSED */ 840 static void 841 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 842 struct compound_state *cs) 843 { 844 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 845 } 846 847 /* 848 * Check if the security flavor, nfsnum, is in the flavor_list. 849 */ 850 bool_t 851 in_flavor_list(int nfsnum, int *flavor_list, int count) 852 { 853 int i; 854 855 for (i = 0; i < count; i++) { 856 if (nfsnum == flavor_list[i]) 857 return (TRUE); 858 } 859 return (FALSE); 860 } 861 862 /* 863 * Used by rfs4_op_secinfo to get the security information from the 864 * export structure associated with the component. 865 */ 866 /* ARGSUSED */ 867 static nfsstat4 868 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 869 { 870 int error, different_export = 0; 871 vnode_t *dvp, *vp, *tvp; 872 struct exportinfo *exi = NULL; 873 fid_t fid; 874 uint_t count, i; 875 secinfo4 *resok_val; 876 struct secinfo *secp; 877 seconfig_t *si; 878 bool_t did_traverse; 879 int dotdot, walk; 880 881 dvp = cs->vp; 882 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 883 884 /* 885 * If dotdotting, then need to check whether it's above the 886 * root of a filesystem, or above an export point. 887 */ 888 if (dotdot) { 889 890 /* 891 * If dotdotting at the root of a filesystem, then 892 * need to traverse back to the mounted-on filesystem 893 * and do the dotdot lookup there. 894 */ 895 if (cs->vp->v_flag & VROOT) { 896 897 /* 898 * If at the system root, then can 899 * go up no further. 900 */ 901 if (VN_CMP(dvp, rootdir)) 902 return (puterrno4(ENOENT)); 903 904 /* 905 * Traverse back to the mounted-on filesystem 906 */ 907 dvp = untraverse(cs->vp); 908 909 /* 910 * Set the different_export flag so we remember 911 * to pick up a new exportinfo entry for 912 * this new filesystem. 913 */ 914 different_export = 1; 915 } else { 916 917 /* 918 * If dotdotting above an export point then set 919 * the different_export to get new export info. 920 */ 921 different_export = nfs_exported(cs->exi, cs->vp); 922 } 923 } 924 925 /* 926 * Get the vnode for the component "nm". 927 */ 928 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 929 NULL, NULL, NULL); 930 if (error) 931 return (puterrno4(error)); 932 933 /* 934 * If the vnode is in a pseudo filesystem, or if the security flavor 935 * used in the request is valid but not an explicitly shared flavor, 936 * or the access bit indicates that this is a limited access, 937 * check whether this vnode is visible. 938 */ 939 if (!different_export && 940 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 941 cs->access & CS_ACCESS_LIMITED)) { 942 if (! nfs_visible(cs->exi, vp, &different_export)) { 943 VN_RELE(vp); 944 return (puterrno4(ENOENT)); 945 } 946 } 947 948 /* 949 * If it's a mountpoint, then traverse it. 950 */ 951 if (vn_ismntpt(vp)) { 952 tvp = vp; 953 if ((error = traverse(&tvp)) != 0) { 954 VN_RELE(vp); 955 return (puterrno4(error)); 956 } 957 /* remember that we had to traverse mountpoint */ 958 did_traverse = TRUE; 959 vp = tvp; 960 different_export = 1; 961 } else if (vp->v_vfsp != dvp->v_vfsp) { 962 /* 963 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 964 * then vp is probably an LOFS object. We don't need the 965 * realvp, we just need to know that we might have crossed 966 * a server fs boundary and need to call checkexport4. 967 * (LOFS lookup hides server fs mountpoints, and actually calls 968 * traverse) 969 */ 970 different_export = 1; 971 did_traverse = FALSE; 972 } 973 974 /* 975 * Get the export information for it. 976 */ 977 if (different_export) { 978 979 bzero(&fid, sizeof (fid)); 980 fid.fid_len = MAXFIDSZ; 981 error = vop_fid_pseudo(vp, &fid); 982 if (error) { 983 VN_RELE(vp); 984 return (puterrno4(error)); 985 } 986 987 if (dotdot) 988 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 989 else 990 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 991 992 if (exi == NULL) { 993 if (did_traverse == TRUE) { 994 /* 995 * If this vnode is a mounted-on vnode, 996 * but the mounted-on file system is not 997 * exported, send back the secinfo for 998 * the exported node that the mounted-on 999 * vnode lives in. 1000 */ 1001 exi = cs->exi; 1002 } else { 1003 VN_RELE(vp); 1004 return (puterrno4(EACCES)); 1005 } 1006 } 1007 } else { 1008 exi = cs->exi; 1009 } 1010 ASSERT(exi != NULL); 1011 1012 1013 /* 1014 * Create the secinfo result based on the security information 1015 * from the exportinfo structure (exi). 1016 * 1017 * Return all flavors for a pseudo node. 1018 * For a real export node, return the flavor that the client 1019 * has access with. 1020 */ 1021 ASSERT(RW_LOCK_HELD(&exported_lock)); 1022 if (PSEUDO(exi)) { 1023 count = exi->exi_export.ex_seccnt; /* total sec count */ 1024 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1025 secp = exi->exi_export.ex_secinfo; 1026 1027 for (i = 0; i < count; i++) { 1028 si = &secp[i].s_secinfo; 1029 resok_val[i].flavor = si->sc_rpcnum; 1030 if (resok_val[i].flavor == RPCSEC_GSS) { 1031 rpcsec_gss_info *info; 1032 1033 info = &resok_val[i].flavor_info; 1034 info->qop = si->sc_qop; 1035 info->service = (rpc_gss_svc_t)si->sc_service; 1036 1037 /* get oid opaque data */ 1038 info->oid.sec_oid4_len = 1039 si->sc_gss_mech_type->length; 1040 info->oid.sec_oid4_val = kmem_alloc( 1041 si->sc_gss_mech_type->length, KM_SLEEP); 1042 bcopy( 1043 si->sc_gss_mech_type->elements, 1044 info->oid.sec_oid4_val, 1045 info->oid.sec_oid4_len); 1046 } 1047 } 1048 resp->SECINFO4resok_len = count; 1049 resp->SECINFO4resok_val = resok_val; 1050 } else { 1051 int ret_cnt = 0, k = 0; 1052 int *flavor_list; 1053 1054 count = exi->exi_export.ex_seccnt; /* total sec count */ 1055 secp = exi->exi_export.ex_secinfo; 1056 1057 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1058 /* find out which flavors to return */ 1059 for (i = 0; i < count; i ++) { 1060 int access, flavor, perm; 1061 1062 flavor = secp[i].s_secinfo.sc_nfsnum; 1063 perm = secp[i].s_flags; 1064 1065 access = nfsauth4_secinfo_access(exi, cs->req, 1066 flavor, perm); 1067 1068 if (! (access & NFSAUTH_DENIED) && 1069 ! (access & NFSAUTH_WRONGSEC)) { 1070 flavor_list[ret_cnt] = flavor; 1071 ret_cnt++; 1072 } 1073 } 1074 1075 /* Create the returning SECINFO value */ 1076 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1077 1078 for (i = 0; i < count; i++) { 1079 /* 1080 * If the flavor is in the flavor list, 1081 * fill in resok_val. 1082 */ 1083 si = &secp[i].s_secinfo; 1084 if (in_flavor_list(si->sc_nfsnum, 1085 flavor_list, ret_cnt)) { 1086 resok_val[k].flavor = si->sc_rpcnum; 1087 if (resok_val[k].flavor == RPCSEC_GSS) { 1088 rpcsec_gss_info *info; 1089 1090 info = &resok_val[k].flavor_info; 1091 info->qop = si->sc_qop; 1092 info->service = (rpc_gss_svc_t) 1093 si->sc_service; 1094 1095 /* get oid opaque data */ 1096 info->oid.sec_oid4_len = 1097 si->sc_gss_mech_type->length; 1098 info->oid.sec_oid4_val = kmem_alloc( 1099 si->sc_gss_mech_type->length, 1100 KM_SLEEP); 1101 bcopy(si->sc_gss_mech_type->elements, 1102 info->oid.sec_oid4_val, 1103 info->oid.sec_oid4_len); 1104 } 1105 k++; 1106 } 1107 if (k >= ret_cnt) 1108 break; 1109 } 1110 resp->SECINFO4resok_len = ret_cnt; 1111 resp->SECINFO4resok_val = resok_val; 1112 kmem_free(flavor_list, count * sizeof (int)); 1113 } 1114 1115 VN_RELE(vp); 1116 return (NFS4_OK); 1117 } 1118 1119 /* 1120 * SECINFO (Operation 33): Obtain required security information on 1121 * the component name in the format of (security-mechanism-oid, qop, service) 1122 * triplets. 1123 */ 1124 /* ARGSUSED */ 1125 static void 1126 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1127 struct compound_state *cs) 1128 { 1129 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1130 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1131 utf8string *utfnm = &args->name; 1132 uint_t len; 1133 char *nm; 1134 struct sockaddr *ca; 1135 char *name = NULL; 1136 1137 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1138 SECINFO4args *, args); 1139 1140 /* 1141 * Current file handle (cfh) should have been set before getting 1142 * into this function. If not, return error. 1143 */ 1144 if (cs->vp == NULL) { 1145 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1146 goto out; 1147 } 1148 1149 if (cs->vp->v_type != VDIR) { 1150 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1151 goto out; 1152 } 1153 1154 /* 1155 * Verify the component name. If failed, error out, but 1156 * do not error out if the component name is a "..". 1157 * SECINFO will return its parents secinfo data for SECINFO "..". 1158 */ 1159 if (!utf8_dir_verify(utfnm)) { 1160 if (utfnm->utf8string_len != 2 || 1161 utfnm->utf8string_val[0] != '.' || 1162 utfnm->utf8string_val[1] != '.') { 1163 *cs->statusp = resp->status = NFS4ERR_INVAL; 1164 goto out; 1165 } 1166 } 1167 1168 nm = utf8_to_str(utfnm, &len, NULL); 1169 if (nm == NULL) { 1170 *cs->statusp = resp->status = NFS4ERR_INVAL; 1171 goto out; 1172 } 1173 1174 if (len > MAXNAMELEN) { 1175 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1176 kmem_free(nm, len); 1177 goto out; 1178 } 1179 1180 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1181 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1182 MAXPATHLEN + 1); 1183 1184 if (name == NULL) { 1185 *cs->statusp = resp->status = NFS4ERR_INVAL; 1186 kmem_free(nm, len); 1187 goto out; 1188 } 1189 1190 1191 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1192 1193 if (name != nm) 1194 kmem_free(name, MAXPATHLEN + 1); 1195 kmem_free(nm, len); 1196 1197 out: 1198 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1199 SECINFO4res *, resp); 1200 } 1201 1202 /* 1203 * Free SECINFO result. 1204 */ 1205 /* ARGSUSED */ 1206 static void 1207 rfs4_op_secinfo_free(nfs_resop4 *resop) 1208 { 1209 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1210 int count, i; 1211 secinfo4 *resok_val; 1212 1213 /* If this is not an Ok result, nothing to free. */ 1214 if (resp->status != NFS4_OK) { 1215 return; 1216 } 1217 1218 count = resp->SECINFO4resok_len; 1219 resok_val = resp->SECINFO4resok_val; 1220 1221 for (i = 0; i < count; i++) { 1222 if (resok_val[i].flavor == RPCSEC_GSS) { 1223 rpcsec_gss_info *info; 1224 1225 info = &resok_val[i].flavor_info; 1226 kmem_free(info->oid.sec_oid4_val, 1227 info->oid.sec_oid4_len); 1228 } 1229 } 1230 kmem_free(resok_val, count * sizeof (secinfo4)); 1231 resp->SECINFO4resok_len = 0; 1232 resp->SECINFO4resok_val = NULL; 1233 } 1234 1235 /* ARGSUSED */ 1236 static void 1237 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1238 struct compound_state *cs) 1239 { 1240 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1241 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1242 int error; 1243 vnode_t *vp; 1244 struct vattr va; 1245 int checkwriteperm; 1246 cred_t *cr = cs->cr; 1247 bslabel_t *clabel, *slabel; 1248 ts_label_t *tslabel; 1249 boolean_t admin_low_client; 1250 1251 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1252 ACCESS4args *, args); 1253 1254 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1255 if (cs->access == CS_ACCESS_DENIED) { 1256 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1257 goto out; 1258 } 1259 #endif 1260 if (cs->vp == NULL) { 1261 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1262 goto out; 1263 } 1264 1265 ASSERT(cr != NULL); 1266 1267 vp = cs->vp; 1268 1269 /* 1270 * If the file system is exported read only, it is not appropriate 1271 * to check write permissions for regular files and directories. 1272 * Special files are interpreted by the client, so the underlying 1273 * permissions are sent back to the client for interpretation. 1274 */ 1275 if (rdonly4(cs->exi, cs->vp, req) && 1276 (vp->v_type == VREG || vp->v_type == VDIR)) 1277 checkwriteperm = 0; 1278 else 1279 checkwriteperm = 1; 1280 1281 /* 1282 * XXX 1283 * We need the mode so that we can correctly determine access 1284 * permissions relative to a mandatory lock file. Access to 1285 * mandatory lock files is denied on the server, so it might 1286 * as well be reflected to the server during the open. 1287 */ 1288 va.va_mask = AT_MODE; 1289 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1290 if (error) { 1291 *cs->statusp = resp->status = puterrno4(error); 1292 goto out; 1293 } 1294 resp->access = 0; 1295 resp->supported = 0; 1296 1297 if (is_system_labeled()) { 1298 ASSERT(req->rq_label != NULL); 1299 clabel = req->rq_label; 1300 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1301 "got client label from request(1)", 1302 struct svc_req *, req); 1303 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1304 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1305 *cs->statusp = resp->status = puterrno4(EACCES); 1306 goto out; 1307 } 1308 slabel = label2bslabel(tslabel); 1309 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1310 char *, "got server label(1) for vp(2)", 1311 bslabel_t *, slabel, vnode_t *, vp); 1312 1313 admin_low_client = B_FALSE; 1314 } else 1315 admin_low_client = B_TRUE; 1316 } 1317 1318 if (args->access & ACCESS4_READ) { 1319 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1320 if (!error && !MANDLOCK(vp, va.va_mode) && 1321 (!is_system_labeled() || admin_low_client || 1322 bldominates(clabel, slabel))) 1323 resp->access |= ACCESS4_READ; 1324 resp->supported |= ACCESS4_READ; 1325 } 1326 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1327 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1328 if (!error && (!is_system_labeled() || admin_low_client || 1329 bldominates(clabel, slabel))) 1330 resp->access |= ACCESS4_LOOKUP; 1331 resp->supported |= ACCESS4_LOOKUP; 1332 } 1333 if (checkwriteperm && 1334 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1335 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1336 if (!error && !MANDLOCK(vp, va.va_mode) && 1337 (!is_system_labeled() || admin_low_client || 1338 blequal(clabel, slabel))) 1339 resp->access |= 1340 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1341 resp->supported |= (ACCESS4_MODIFY | ACCESS4_EXTEND); 1342 } 1343 1344 if (checkwriteperm && 1345 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1346 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1347 if (!error && (!is_system_labeled() || admin_low_client || 1348 blequal(clabel, slabel))) 1349 resp->access |= ACCESS4_DELETE; 1350 resp->supported |= ACCESS4_DELETE; 1351 } 1352 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1353 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1354 if (!error && !MANDLOCK(vp, va.va_mode) && 1355 (!is_system_labeled() || admin_low_client || 1356 bldominates(clabel, slabel))) 1357 resp->access |= ACCESS4_EXECUTE; 1358 resp->supported |= ACCESS4_EXECUTE; 1359 } 1360 1361 if (is_system_labeled() && !admin_low_client) 1362 label_rele(tslabel); 1363 1364 *cs->statusp = resp->status = NFS4_OK; 1365 out: 1366 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1367 ACCESS4res *, resp); 1368 } 1369 1370 /* ARGSUSED */ 1371 static void 1372 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1373 struct compound_state *cs) 1374 { 1375 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1376 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1377 int error; 1378 vnode_t *vp = cs->vp; 1379 cred_t *cr = cs->cr; 1380 vattr_t va; 1381 1382 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1383 COMMIT4args *, args); 1384 1385 if (vp == NULL) { 1386 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1387 goto out; 1388 } 1389 if (cs->access == CS_ACCESS_DENIED) { 1390 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1391 goto out; 1392 } 1393 1394 if (args->offset + args->count < args->offset) { 1395 *cs->statusp = resp->status = NFS4ERR_INVAL; 1396 goto out; 1397 } 1398 1399 va.va_mask = AT_UID; 1400 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1401 1402 /* 1403 * If we can't get the attributes, then we can't do the 1404 * right access checking. So, we'll fail the request. 1405 */ 1406 if (error) { 1407 *cs->statusp = resp->status = puterrno4(error); 1408 goto out; 1409 } 1410 if (rdonly4(cs->exi, cs->vp, req)) { 1411 *cs->statusp = resp->status = NFS4ERR_ROFS; 1412 goto out; 1413 } 1414 1415 if (vp->v_type != VREG) { 1416 if (vp->v_type == VDIR) 1417 resp->status = NFS4ERR_ISDIR; 1418 else 1419 resp->status = NFS4ERR_INVAL; 1420 *cs->statusp = resp->status; 1421 goto out; 1422 } 1423 1424 if (crgetuid(cr) != va.va_uid && 1425 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1426 *cs->statusp = resp->status = puterrno4(error); 1427 goto out; 1428 } 1429 1430 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1431 1432 if (error) { 1433 *cs->statusp = resp->status = puterrno4(error); 1434 goto out; 1435 } 1436 1437 *cs->statusp = resp->status = NFS4_OK; 1438 resp->writeverf = Write4verf; 1439 out: 1440 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1441 COMMIT4res *, resp); 1442 } 1443 1444 /* 1445 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1446 * was completed. It does the nfsv4 create for special files. 1447 */ 1448 /* ARGSUSED */ 1449 static vnode_t * 1450 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1451 struct compound_state *cs, vattr_t *vap, char *nm) 1452 { 1453 int error; 1454 cred_t *cr = cs->cr; 1455 vnode_t *dvp = cs->vp; 1456 vnode_t *vp = NULL; 1457 int mode; 1458 enum vcexcl excl; 1459 1460 switch (args->type) { 1461 case NF4CHR: 1462 case NF4BLK: 1463 if (secpolicy_sys_devices(cr) != 0) { 1464 *cs->statusp = resp->status = NFS4ERR_PERM; 1465 return (NULL); 1466 } 1467 if (args->type == NF4CHR) 1468 vap->va_type = VCHR; 1469 else 1470 vap->va_type = VBLK; 1471 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1472 args->ftype4_u.devdata.specdata2); 1473 vap->va_mask |= AT_RDEV; 1474 break; 1475 case NF4SOCK: 1476 vap->va_type = VSOCK; 1477 break; 1478 case NF4FIFO: 1479 vap->va_type = VFIFO; 1480 break; 1481 default: 1482 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1483 return (NULL); 1484 } 1485 1486 /* 1487 * Must specify the mode. 1488 */ 1489 if (!(vap->va_mask & AT_MODE)) { 1490 *cs->statusp = resp->status = NFS4ERR_INVAL; 1491 return (NULL); 1492 } 1493 1494 excl = EXCL; 1495 1496 mode = 0; 1497 1498 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1499 if (error) { 1500 *cs->statusp = resp->status = puterrno4(error); 1501 return (NULL); 1502 } 1503 return (vp); 1504 } 1505 1506 /* 1507 * nfsv4 create is used to create non-regular files. For regular files, 1508 * use nfsv4 open. 1509 */ 1510 /* ARGSUSED */ 1511 static void 1512 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1513 struct compound_state *cs) 1514 { 1515 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1516 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1517 int error; 1518 struct vattr bva, iva, iva2, ava, *vap; 1519 cred_t *cr = cs->cr; 1520 vnode_t *dvp = cs->vp; 1521 vnode_t *vp = NULL; 1522 vnode_t *realvp; 1523 char *nm, *lnm; 1524 uint_t len, llen; 1525 int syncval = 0; 1526 struct nfs4_svgetit_arg sarg; 1527 struct nfs4_ntov_table ntov; 1528 struct statvfs64 sb; 1529 nfsstat4 status; 1530 struct sockaddr *ca; 1531 char *name = NULL; 1532 char *lname = NULL; 1533 1534 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1535 CREATE4args *, args); 1536 1537 resp->attrset = 0; 1538 1539 if (dvp == NULL) { 1540 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1541 goto out; 1542 } 1543 1544 /* 1545 * If there is an unshared filesystem mounted on this vnode, 1546 * do not allow to create an object in this directory. 1547 */ 1548 if (vn_ismntpt(dvp)) { 1549 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1550 goto out; 1551 } 1552 1553 /* Verify that type is correct */ 1554 switch (args->type) { 1555 case NF4LNK: 1556 case NF4BLK: 1557 case NF4CHR: 1558 case NF4SOCK: 1559 case NF4FIFO: 1560 case NF4DIR: 1561 break; 1562 default: 1563 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1564 goto out; 1565 }; 1566 1567 if (cs->access == CS_ACCESS_DENIED) { 1568 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1569 goto out; 1570 } 1571 if (dvp->v_type != VDIR) { 1572 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1573 goto out; 1574 } 1575 if (!utf8_dir_verify(&args->objname)) { 1576 *cs->statusp = resp->status = NFS4ERR_INVAL; 1577 goto out; 1578 } 1579 1580 if (rdonly4(cs->exi, cs->vp, req)) { 1581 *cs->statusp = resp->status = NFS4ERR_ROFS; 1582 goto out; 1583 } 1584 1585 /* 1586 * Name of newly created object 1587 */ 1588 nm = utf8_to_fn(&args->objname, &len, NULL); 1589 if (nm == NULL) { 1590 *cs->statusp = resp->status = NFS4ERR_INVAL; 1591 goto out; 1592 } 1593 1594 if (len > MAXNAMELEN) { 1595 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1596 kmem_free(nm, len); 1597 goto out; 1598 } 1599 1600 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1601 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1602 MAXPATHLEN + 1); 1603 1604 if (name == NULL) { 1605 *cs->statusp = resp->status = NFS4ERR_INVAL; 1606 kmem_free(nm, len); 1607 goto out; 1608 } 1609 1610 resp->attrset = 0; 1611 1612 sarg.sbp = &sb; 1613 sarg.is_referral = B_FALSE; 1614 nfs4_ntov_table_init(&ntov); 1615 1616 status = do_rfs4_set_attrs(&resp->attrset, 1617 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1618 1619 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1620 status = NFS4ERR_INVAL; 1621 1622 if (status != NFS4_OK) { 1623 *cs->statusp = resp->status = status; 1624 if (name != nm) 1625 kmem_free(name, MAXPATHLEN + 1); 1626 kmem_free(nm, len); 1627 nfs4_ntov_table_free(&ntov, &sarg); 1628 resp->attrset = 0; 1629 goto out; 1630 } 1631 1632 /* Get "before" change value */ 1633 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1634 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1635 if (error) { 1636 *cs->statusp = resp->status = puterrno4(error); 1637 if (name != nm) 1638 kmem_free(name, MAXPATHLEN + 1); 1639 kmem_free(nm, len); 1640 nfs4_ntov_table_free(&ntov, &sarg); 1641 resp->attrset = 0; 1642 goto out; 1643 } 1644 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1645 1646 vap = sarg.vap; 1647 1648 /* 1649 * Set the default initial values for attributes when the parent 1650 * directory does not have the VSUID/VSGID bit set and they have 1651 * not been specified in createattrs. 1652 */ 1653 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1654 vap->va_uid = crgetuid(cr); 1655 vap->va_mask |= AT_UID; 1656 } 1657 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1658 vap->va_gid = crgetgid(cr); 1659 vap->va_mask |= AT_GID; 1660 } 1661 1662 vap->va_mask |= AT_TYPE; 1663 switch (args->type) { 1664 case NF4DIR: 1665 vap->va_type = VDIR; 1666 if ((vap->va_mask & AT_MODE) == 0) { 1667 vap->va_mode = 0700; /* default: owner rwx only */ 1668 vap->va_mask |= AT_MODE; 1669 } 1670 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1671 if (error) 1672 break; 1673 1674 /* 1675 * Get the initial "after" sequence number, if it fails, 1676 * set to zero 1677 */ 1678 iva.va_mask = AT_SEQ; 1679 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1680 iva.va_seq = 0; 1681 break; 1682 case NF4LNK: 1683 vap->va_type = VLNK; 1684 if ((vap->va_mask & AT_MODE) == 0) { 1685 vap->va_mode = 0700; /* default: owner rwx only */ 1686 vap->va_mask |= AT_MODE; 1687 } 1688 1689 /* 1690 * symlink names must be treated as data 1691 */ 1692 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1693 1694 if (lnm == NULL) { 1695 *cs->statusp = resp->status = NFS4ERR_INVAL; 1696 if (name != nm) 1697 kmem_free(name, MAXPATHLEN + 1); 1698 kmem_free(nm, len); 1699 nfs4_ntov_table_free(&ntov, &sarg); 1700 resp->attrset = 0; 1701 goto out; 1702 } 1703 1704 if (llen > MAXPATHLEN) { 1705 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1706 if (name != nm) 1707 kmem_free(name, MAXPATHLEN + 1); 1708 kmem_free(nm, len); 1709 kmem_free(lnm, llen); 1710 nfs4_ntov_table_free(&ntov, &sarg); 1711 resp->attrset = 0; 1712 goto out; 1713 } 1714 1715 lname = nfscmd_convname(ca, cs->exi, lnm, 1716 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1717 1718 if (lname == NULL) { 1719 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1720 if (name != nm) 1721 kmem_free(name, MAXPATHLEN + 1); 1722 kmem_free(nm, len); 1723 kmem_free(lnm, llen); 1724 nfs4_ntov_table_free(&ntov, &sarg); 1725 resp->attrset = 0; 1726 goto out; 1727 } 1728 1729 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1730 if (lname != lnm) 1731 kmem_free(lname, MAXPATHLEN + 1); 1732 kmem_free(lnm, llen); 1733 if (error) 1734 break; 1735 1736 /* 1737 * Get the initial "after" sequence number, if it fails, 1738 * set to zero 1739 */ 1740 iva.va_mask = AT_SEQ; 1741 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1742 iva.va_seq = 0; 1743 1744 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, 1745 NULL, NULL, NULL); 1746 if (error) 1747 break; 1748 1749 /* 1750 * va_seq is not safe over VOP calls, check it again 1751 * if it has changed zero out iva to force atomic = FALSE. 1752 */ 1753 iva2.va_mask = AT_SEQ; 1754 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1755 iva2.va_seq != iva.va_seq) 1756 iva.va_seq = 0; 1757 break; 1758 default: 1759 /* 1760 * probably a special file. 1761 */ 1762 if ((vap->va_mask & AT_MODE) == 0) { 1763 vap->va_mode = 0600; /* default: owner rw only */ 1764 vap->va_mask |= AT_MODE; 1765 } 1766 syncval = FNODSYNC; 1767 /* 1768 * We know this will only generate one VOP call 1769 */ 1770 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); 1771 1772 if (vp == NULL) { 1773 if (name != nm) 1774 kmem_free(name, MAXPATHLEN + 1); 1775 kmem_free(nm, len); 1776 nfs4_ntov_table_free(&ntov, &sarg); 1777 resp->attrset = 0; 1778 goto out; 1779 } 1780 1781 /* 1782 * Get the initial "after" sequence number, if it fails, 1783 * set to zero 1784 */ 1785 iva.va_mask = AT_SEQ; 1786 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1787 iva.va_seq = 0; 1788 1789 break; 1790 } 1791 if (name != nm) 1792 kmem_free(name, MAXPATHLEN + 1); 1793 kmem_free(nm, len); 1794 1795 if (error) { 1796 *cs->statusp = resp->status = puterrno4(error); 1797 } 1798 1799 /* 1800 * Force modified data and metadata out to stable storage. 1801 */ 1802 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1803 1804 if (resp->status != NFS4_OK) { 1805 if (vp != NULL) 1806 VN_RELE(vp); 1807 nfs4_ntov_table_free(&ntov, &sarg); 1808 resp->attrset = 0; 1809 goto out; 1810 } 1811 1812 /* 1813 * Finish setup of cinfo response, "before" value already set. 1814 * Get "after" change value, if it fails, simply return the 1815 * before value. 1816 */ 1817 ava.va_mask = AT_CTIME|AT_SEQ; 1818 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1819 ava.va_ctime = bva.va_ctime; 1820 ava.va_seq = 0; 1821 } 1822 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1823 1824 /* 1825 * True verification that object was created with correct 1826 * attrs is impossible. The attrs could have been changed 1827 * immediately after object creation. If attributes did 1828 * not verify, the only recourse for the server is to 1829 * destroy the object. Maybe if some attrs (like gid) 1830 * are set incorrectly, the object should be destroyed; 1831 * however, seems bad as a default policy. Do we really 1832 * want to destroy an object over one of the times not 1833 * verifying correctly? For these reasons, the server 1834 * currently sets bits in attrset for createattrs 1835 * that were set; however, no verification is done. 1836 * 1837 * vmask_to_nmask accounts for vattr bits set on create 1838 * [do_rfs4_set_attrs() only sets resp bits for 1839 * non-vattr/vfs bits.] 1840 * Mask off any bits set by default so as not to return 1841 * more attrset bits than were requested in createattrs 1842 */ 1843 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1844 resp->attrset &= args->createattrs.attrmask; 1845 nfs4_ntov_table_free(&ntov, &sarg); 1846 1847 error = makefh4(&cs->fh, vp, cs->exi); 1848 if (error) { 1849 *cs->statusp = resp->status = puterrno4(error); 1850 } 1851 1852 /* 1853 * The cinfo.atomic = TRUE only if we got no errors, we have 1854 * non-zero va_seq's, and it has incremented by exactly one 1855 * during the creation and it didn't change during the VOP_LOOKUP 1856 * or VOP_FSYNC. 1857 */ 1858 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1859 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1860 resp->cinfo.atomic = TRUE; 1861 else 1862 resp->cinfo.atomic = FALSE; 1863 1864 /* 1865 * Force modified metadata out to stable storage. 1866 * 1867 * if a underlying vp exists, pass it to VOP_FSYNC 1868 */ 1869 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1870 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1871 else 1872 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1873 1874 if (resp->status != NFS4_OK) { 1875 VN_RELE(vp); 1876 goto out; 1877 } 1878 if (cs->vp) 1879 VN_RELE(cs->vp); 1880 1881 cs->vp = vp; 1882 *cs->statusp = resp->status = NFS4_OK; 1883 out: 1884 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1885 CREATE4res *, resp); 1886 } 1887 1888 /*ARGSUSED*/ 1889 static void 1890 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1891 struct compound_state *cs) 1892 { 1893 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1894 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1895 1896 rfs4_op_inval(argop, resop, req, cs); 1897 1898 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1899 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1900 } 1901 1902 /*ARGSUSED*/ 1903 static void 1904 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1905 struct compound_state *cs) 1906 { 1907 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1908 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1909 rfs4_deleg_state_t *dsp; 1910 nfsstat4 status; 1911 1912 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1913 DELEGRETURN4args *, args); 1914 1915 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1916 resp->status = *cs->statusp = status; 1917 if (status != NFS4_OK) 1918 goto out; 1919 1920 /* Ensure specified filehandle matches */ 1921 if (cs->vp != dsp->rds_finfo->rf_vp) { 1922 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1923 } else 1924 rfs4_return_deleg(dsp, FALSE); 1925 1926 rfs4_update_lease(dsp->rds_client); 1927 1928 rfs4_deleg_state_rele(dsp); 1929 out: 1930 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1931 DELEGRETURN4res *, resp); 1932 } 1933 1934 /* 1935 * Check to see if a given "flavor" is an explicitly shared flavor. 1936 * The assumption of this routine is the "flavor" is already a valid 1937 * flavor in the secinfo list of "exi". 1938 * 1939 * e.g. 1940 * # share -o sec=flavor1 /export 1941 * # share -o sec=flavor2 /export/home 1942 * 1943 * flavor2 is not an explicitly shared flavor for /export, 1944 * however it is in the secinfo list for /export thru the 1945 * server namespace setup. 1946 */ 1947 int 1948 is_exported_sec(int flavor, struct exportinfo *exi) 1949 { 1950 int i; 1951 struct secinfo *sp; 1952 1953 sp = exi->exi_export.ex_secinfo; 1954 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1955 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1956 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1957 return (SEC_REF_EXPORTED(&sp[i])); 1958 } 1959 } 1960 1961 /* Should not reach this point based on the assumption */ 1962 return (0); 1963 } 1964 1965 /* 1966 * Check if the security flavor used in the request matches what is 1967 * required at the export point or at the root pseudo node (exi_root). 1968 * 1969 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1970 * 1971 */ 1972 static int 1973 secinfo_match_or_authnone(struct compound_state *cs) 1974 { 1975 int i; 1976 struct secinfo *sp; 1977 1978 /* 1979 * Check cs->nfsflavor (from the request) against 1980 * the current export data in cs->exi. 1981 */ 1982 sp = cs->exi->exi_export.ex_secinfo; 1983 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1984 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1985 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1986 return (1); 1987 } 1988 1989 return (0); 1990 } 1991 1992 /* 1993 * Check the access authority for the client and return the correct error. 1994 */ 1995 nfsstat4 1996 call_checkauth4(struct compound_state *cs, struct svc_req *req) 1997 { 1998 int authres; 1999 2000 /* 2001 * First, check if the security flavor used in the request 2002 * are among the flavors set in the server namespace. 2003 */ 2004 if (!secinfo_match_or_authnone(cs)) { 2005 *cs->statusp = NFS4ERR_WRONGSEC; 2006 return (*cs->statusp); 2007 } 2008 2009 authres = checkauth4(cs, req); 2010 2011 if (authres > 0) { 2012 *cs->statusp = NFS4_OK; 2013 if (! (cs->access & CS_ACCESS_LIMITED)) 2014 cs->access = CS_ACCESS_OK; 2015 } else if (authres == 0) { 2016 *cs->statusp = NFS4ERR_ACCESS; 2017 } else if (authres == -2) { 2018 *cs->statusp = NFS4ERR_WRONGSEC; 2019 } else { 2020 *cs->statusp = NFS4ERR_DELAY; 2021 } 2022 return (*cs->statusp); 2023 } 2024 2025 /* 2026 * bitmap4_to_attrmask is called by getattr and readdir. 2027 * It sets up the vattr mask and determines whether vfsstat call is needed 2028 * based on the input bitmap. 2029 * Returns nfsv4 status. 2030 */ 2031 static nfsstat4 2032 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2033 { 2034 int i; 2035 uint_t va_mask; 2036 struct statvfs64 *sbp = sargp->sbp; 2037 2038 sargp->sbp = NULL; 2039 sargp->flag = 0; 2040 sargp->rdattr_error = NFS4_OK; 2041 sargp->mntdfid_set = FALSE; 2042 if (sargp->cs->vp) 2043 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2044 FH4_ATTRDIR | FH4_NAMEDATTR); 2045 else 2046 sargp->xattr = 0; 2047 2048 /* 2049 * Set rdattr_error_req to true if return error per 2050 * failed entry rather than fail the readdir. 2051 */ 2052 if (breq & FATTR4_RDATTR_ERROR_MASK) 2053 sargp->rdattr_error_req = 1; 2054 else 2055 sargp->rdattr_error_req = 0; 2056 2057 /* 2058 * generate the va_mask 2059 * Handle the easy cases first 2060 */ 2061 switch (breq) { 2062 case NFS4_NTOV_ATTR_MASK: 2063 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2064 return (NFS4_OK); 2065 2066 case NFS4_FS_ATTR_MASK: 2067 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2068 sargp->sbp = sbp; 2069 return (NFS4_OK); 2070 2071 case NFS4_NTOV_ATTR_CACHE_MASK: 2072 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2073 return (NFS4_OK); 2074 2075 case FATTR4_LEASE_TIME_MASK: 2076 sargp->vap->va_mask = 0; 2077 return (NFS4_OK); 2078 2079 default: 2080 va_mask = 0; 2081 for (i = 0; i < nfs4_ntov_map_size; i++) { 2082 if ((breq & nfs4_ntov_map[i].fbit) && 2083 nfs4_ntov_map[i].vbit) 2084 va_mask |= nfs4_ntov_map[i].vbit; 2085 } 2086 2087 /* 2088 * Check is vfsstat is needed 2089 */ 2090 if (breq & NFS4_FS_ATTR_MASK) 2091 sargp->sbp = sbp; 2092 2093 sargp->vap->va_mask = va_mask; 2094 return (NFS4_OK); 2095 } 2096 /* NOTREACHED */ 2097 } 2098 2099 /* 2100 * bitmap4_get_sysattrs is called by getattr and readdir. 2101 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2102 * Returns nfsv4 status. 2103 */ 2104 static nfsstat4 2105 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2106 { 2107 int error; 2108 struct compound_state *cs = sargp->cs; 2109 vnode_t *vp = cs->vp; 2110 2111 if (sargp->sbp != NULL) { 2112 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2113 sargp->sbp = NULL; /* to identify error */ 2114 return (puterrno4(error)); 2115 } 2116 } 2117 2118 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2119 } 2120 2121 static void 2122 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2123 { 2124 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2125 KM_SLEEP); 2126 ntovp->attrcnt = 0; 2127 ntovp->vfsstat = FALSE; 2128 } 2129 2130 static void 2131 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2132 struct nfs4_svgetit_arg *sargp) 2133 { 2134 int i; 2135 union nfs4_attr_u *na; 2136 uint8_t *amap; 2137 2138 /* 2139 * XXX Should do the same checks for whether the bit is set 2140 */ 2141 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2142 i < ntovp->attrcnt; i++, na++, amap++) { 2143 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2144 NFS4ATTR_FREEIT, sargp, na); 2145 } 2146 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2147 /* 2148 * xdr_free for getattr will be done later 2149 */ 2150 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2151 i < ntovp->attrcnt; i++, na++, amap++) { 2152 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2153 } 2154 } 2155 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2156 } 2157 2158 /* 2159 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2160 */ 2161 static nfsstat4 2162 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2163 struct nfs4_svgetit_arg *sargp) 2164 { 2165 int error = 0; 2166 int i, k; 2167 struct nfs4_ntov_table ntov; 2168 XDR xdr; 2169 ulong_t xdr_size; 2170 char *xdr_attrs; 2171 nfsstat4 status = NFS4_OK; 2172 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2173 union nfs4_attr_u *na; 2174 uint8_t *amap; 2175 2176 sargp->op = NFS4ATTR_GETIT; 2177 sargp->flag = 0; 2178 2179 fattrp->attrmask = 0; 2180 /* if no bits requested, then return empty fattr4 */ 2181 if (breq == 0) { 2182 fattrp->attrlist4_len = 0; 2183 fattrp->attrlist4 = NULL; 2184 return (NFS4_OK); 2185 } 2186 2187 /* 2188 * return NFS4ERR_INVAL when client requests write-only attrs 2189 */ 2190 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2191 return (NFS4ERR_INVAL); 2192 2193 nfs4_ntov_table_init(&ntov); 2194 na = ntov.na; 2195 amap = ntov.amap; 2196 2197 /* 2198 * Now loop to get or verify the attrs 2199 */ 2200 for (i = 0; i < nfs4_ntov_map_size; i++) { 2201 if (breq & nfs4_ntov_map[i].fbit) { 2202 if ((*nfs4_ntov_map[i].sv_getit)( 2203 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2204 2205 error = (*nfs4_ntov_map[i].sv_getit)( 2206 NFS4ATTR_GETIT, sargp, na); 2207 2208 /* 2209 * Possible error values: 2210 * >0 if sv_getit failed to 2211 * get the attr; 0 if succeeded; 2212 * <0 if rdattr_error and the 2213 * attribute cannot be returned. 2214 */ 2215 if (error && !(sargp->rdattr_error_req)) 2216 goto done; 2217 /* 2218 * If error then just for entry 2219 */ 2220 if (error == 0) { 2221 fattrp->attrmask |= 2222 nfs4_ntov_map[i].fbit; 2223 *amap++ = 2224 (uint8_t)nfs4_ntov_map[i].nval; 2225 na++; 2226 (ntov.attrcnt)++; 2227 } else if ((error > 0) && 2228 (sargp->rdattr_error == NFS4_OK)) { 2229 sargp->rdattr_error = puterrno4(error); 2230 } 2231 error = 0; 2232 } 2233 } 2234 } 2235 2236 /* 2237 * If rdattr_error was set after the return value for it was assigned, 2238 * update it. 2239 */ 2240 if (prev_rdattr_error != sargp->rdattr_error) { 2241 na = ntov.na; 2242 amap = ntov.amap; 2243 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2244 k = *amap; 2245 if (k < FATTR4_RDATTR_ERROR) { 2246 continue; 2247 } 2248 if ((k == FATTR4_RDATTR_ERROR) && 2249 ((*nfs4_ntov_map[k].sv_getit)( 2250 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2251 2252 (void) (*nfs4_ntov_map[k].sv_getit)( 2253 NFS4ATTR_GETIT, sargp, na); 2254 } 2255 break; 2256 } 2257 } 2258 2259 xdr_size = 0; 2260 na = ntov.na; 2261 amap = ntov.amap; 2262 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2263 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2264 } 2265 2266 fattrp->attrlist4_len = xdr_size; 2267 if (xdr_size) { 2268 /* freed by rfs4_op_getattr_free() */ 2269 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2270 2271 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2272 2273 na = ntov.na; 2274 amap = ntov.amap; 2275 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2276 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2277 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2278 int, *amap); 2279 status = NFS4ERR_SERVERFAULT; 2280 break; 2281 } 2282 } 2283 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2284 } else { 2285 fattrp->attrlist4 = NULL; 2286 } 2287 done: 2288 2289 nfs4_ntov_table_free(&ntov, sargp); 2290 2291 if (error != 0) 2292 status = puterrno4(error); 2293 2294 return (status); 2295 } 2296 2297 /* ARGSUSED */ 2298 static void 2299 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2300 struct compound_state *cs) 2301 { 2302 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2303 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2304 struct nfs4_svgetit_arg sarg; 2305 struct statvfs64 sb; 2306 nfsstat4 status; 2307 2308 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2309 GETATTR4args *, args); 2310 2311 if (cs->vp == NULL) { 2312 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2313 goto out; 2314 } 2315 2316 if (cs->access == CS_ACCESS_DENIED) { 2317 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2318 goto out; 2319 } 2320 2321 sarg.sbp = &sb; 2322 sarg.cs = cs; 2323 sarg.is_referral = B_FALSE; 2324 2325 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2326 if (status == NFS4_OK) { 2327 2328 status = bitmap4_get_sysattrs(&sarg); 2329 if (status == NFS4_OK) { 2330 2331 /* Is this a referral? */ 2332 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2333 /* Older V4 Solaris client sees a link */ 2334 if (client_is_downrev(req)) 2335 sarg.vap->va_type = VLNK; 2336 else 2337 sarg.is_referral = B_TRUE; 2338 } 2339 2340 status = do_rfs4_op_getattr(args->attr_request, 2341 &resp->obj_attributes, &sarg); 2342 } 2343 } 2344 *cs->statusp = resp->status = status; 2345 out: 2346 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2347 GETATTR4res *, resp); 2348 } 2349 2350 static void 2351 rfs4_op_getattr_free(nfs_resop4 *resop) 2352 { 2353 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2354 2355 nfs4_fattr4_free(&resp->obj_attributes); 2356 } 2357 2358 /* ARGSUSED */ 2359 static void 2360 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2361 struct compound_state *cs) 2362 { 2363 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2364 2365 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2366 2367 if (cs->vp == NULL) { 2368 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2369 goto out; 2370 } 2371 if (cs->access == CS_ACCESS_DENIED) { 2372 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2373 goto out; 2374 } 2375 2376 /* check for reparse point at the share point */ 2377 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2378 /* it's all bad */ 2379 cs->exi->exi_moved = 1; 2380 *cs->statusp = resp->status = NFS4ERR_MOVED; 2381 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2382 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2383 return; 2384 } 2385 2386 /* check for reparse point at vp */ 2387 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2388 /* it's not all bad */ 2389 *cs->statusp = resp->status = NFS4ERR_MOVED; 2390 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2391 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2392 return; 2393 } 2394 2395 resp->object.nfs_fh4_val = 2396 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2397 nfs_fh4_copy(&cs->fh, &resp->object); 2398 *cs->statusp = resp->status = NFS4_OK; 2399 out: 2400 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2401 GETFH4res *, resp); 2402 } 2403 2404 static void 2405 rfs4_op_getfh_free(nfs_resop4 *resop) 2406 { 2407 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2408 2409 if (resp->status == NFS4_OK && 2410 resp->object.nfs_fh4_val != NULL) { 2411 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2412 resp->object.nfs_fh4_val = NULL; 2413 resp->object.nfs_fh4_len = 0; 2414 } 2415 } 2416 2417 /* 2418 * illegal: args: void 2419 * res : status (NFS4ERR_OP_ILLEGAL) 2420 */ 2421 /* ARGSUSED */ 2422 static void 2423 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2424 struct svc_req *req, struct compound_state *cs) 2425 { 2426 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2427 2428 resop->resop = OP_ILLEGAL; 2429 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2430 } 2431 2432 /* 2433 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2434 * res: status. If success - CURRENT_FH unchanged, return change_info 2435 */ 2436 /* ARGSUSED */ 2437 static void 2438 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2439 struct compound_state *cs) 2440 { 2441 LINK4args *args = &argop->nfs_argop4_u.oplink; 2442 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2443 int error; 2444 vnode_t *vp; 2445 vnode_t *dvp; 2446 struct vattr bdva, idva, adva; 2447 char *nm; 2448 uint_t len; 2449 struct sockaddr *ca; 2450 char *name = NULL; 2451 2452 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2453 LINK4args *, args); 2454 2455 /* SAVED_FH: source object */ 2456 vp = cs->saved_vp; 2457 if (vp == NULL) { 2458 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2459 goto out; 2460 } 2461 2462 /* CURRENT_FH: target directory */ 2463 dvp = cs->vp; 2464 if (dvp == NULL) { 2465 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2466 goto out; 2467 } 2468 2469 /* 2470 * If there is a non-shared filesystem mounted on this vnode, 2471 * do not allow to link any file in this directory. 2472 */ 2473 if (vn_ismntpt(dvp)) { 2474 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2475 goto out; 2476 } 2477 2478 if (cs->access == CS_ACCESS_DENIED) { 2479 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2480 goto out; 2481 } 2482 2483 /* Check source object's type validity */ 2484 if (vp->v_type == VDIR) { 2485 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2486 goto out; 2487 } 2488 2489 /* Check target directory's type */ 2490 if (dvp->v_type != VDIR) { 2491 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2492 goto out; 2493 } 2494 2495 if (cs->saved_exi != cs->exi) { 2496 *cs->statusp = resp->status = NFS4ERR_XDEV; 2497 goto out; 2498 } 2499 2500 if (!utf8_dir_verify(&args->newname)) { 2501 *cs->statusp = resp->status = NFS4ERR_INVAL; 2502 goto out; 2503 } 2504 2505 nm = utf8_to_fn(&args->newname, &len, NULL); 2506 if (nm == NULL) { 2507 *cs->statusp = resp->status = NFS4ERR_INVAL; 2508 goto out; 2509 } 2510 2511 if (len > MAXNAMELEN) { 2512 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2513 kmem_free(nm, len); 2514 goto out; 2515 } 2516 2517 if (rdonly4(cs->exi, cs->vp, req)) { 2518 *cs->statusp = resp->status = NFS4ERR_ROFS; 2519 kmem_free(nm, len); 2520 goto out; 2521 } 2522 2523 /* Get "before" change value */ 2524 bdva.va_mask = AT_CTIME|AT_SEQ; 2525 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2526 if (error) { 2527 *cs->statusp = resp->status = puterrno4(error); 2528 kmem_free(nm, len); 2529 goto out; 2530 } 2531 2532 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2533 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2534 MAXPATHLEN + 1); 2535 2536 if (name == NULL) { 2537 *cs->statusp = resp->status = NFS4ERR_INVAL; 2538 kmem_free(nm, len); 2539 goto out; 2540 } 2541 2542 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2543 2544 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2545 2546 if (nm != name) 2547 kmem_free(name, MAXPATHLEN + 1); 2548 kmem_free(nm, len); 2549 2550 /* 2551 * Get the initial "after" sequence number, if it fails, set to zero 2552 */ 2553 idva.va_mask = AT_SEQ; 2554 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2555 idva.va_seq = 0; 2556 2557 /* 2558 * Force modified data and metadata out to stable storage. 2559 */ 2560 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2561 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2562 2563 if (error) { 2564 *cs->statusp = resp->status = puterrno4(error); 2565 goto out; 2566 } 2567 2568 /* 2569 * Get "after" change value, if it fails, simply return the 2570 * before value. 2571 */ 2572 adva.va_mask = AT_CTIME|AT_SEQ; 2573 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2574 adva.va_ctime = bdva.va_ctime; 2575 adva.va_seq = 0; 2576 } 2577 2578 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2579 2580 /* 2581 * The cinfo.atomic = TRUE only if we have 2582 * non-zero va_seq's, and it has incremented by exactly one 2583 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2584 */ 2585 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2586 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2587 resp->cinfo.atomic = TRUE; 2588 else 2589 resp->cinfo.atomic = FALSE; 2590 2591 *cs->statusp = resp->status = NFS4_OK; 2592 out: 2593 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2594 LINK4res *, resp); 2595 } 2596 2597 /* 2598 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2599 */ 2600 2601 /* ARGSUSED */ 2602 static nfsstat4 2603 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) 2604 { 2605 int error; 2606 int different_export = 0; 2607 vnode_t *vp, *tvp, *pre_tvp = NULL, *oldvp = NULL; 2608 struct exportinfo *exi = NULL, *pre_exi = NULL; 2609 nfsstat4 stat; 2610 fid_t fid; 2611 int attrdir, dotdot, walk; 2612 bool_t is_newvp = FALSE; 2613 2614 if (cs->vp->v_flag & V_XATTRDIR) { 2615 attrdir = 1; 2616 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2617 } else { 2618 attrdir = 0; 2619 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2620 } 2621 2622 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2623 2624 /* 2625 * If dotdotting, then need to check whether it's 2626 * above the root of a filesystem, or above an 2627 * export point. 2628 */ 2629 if (dotdot) { 2630 2631 /* 2632 * If dotdotting at the root of a filesystem, then 2633 * need to traverse back to the mounted-on filesystem 2634 * and do the dotdot lookup there. 2635 */ 2636 if (cs->vp->v_flag & VROOT) { 2637 2638 /* 2639 * If at the system root, then can 2640 * go up no further. 2641 */ 2642 if (VN_CMP(cs->vp, rootdir)) 2643 return (puterrno4(ENOENT)); 2644 2645 /* 2646 * Traverse back to the mounted-on filesystem 2647 */ 2648 cs->vp = untraverse(cs->vp); 2649 2650 /* 2651 * Set the different_export flag so we remember 2652 * to pick up a new exportinfo entry for 2653 * this new filesystem. 2654 */ 2655 different_export = 1; 2656 } else { 2657 2658 /* 2659 * If dotdotting above an export point then set 2660 * the different_export to get new export info. 2661 */ 2662 different_export = nfs_exported(cs->exi, cs->vp); 2663 } 2664 } 2665 2666 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2667 NULL, NULL, NULL); 2668 if (error) 2669 return (puterrno4(error)); 2670 2671 /* 2672 * If the vnode is in a pseudo filesystem, check whether it is visible. 2673 * 2674 * XXX if the vnode is a symlink and it is not visible in 2675 * a pseudo filesystem, return ENOENT (not following symlink). 2676 * V4 client can not mount such symlink. This is a regression 2677 * from V2/V3. 2678 * 2679 * In the same exported filesystem, if the security flavor used 2680 * is not an explicitly shared flavor, limit the view to the visible 2681 * list entries only. This is not a WRONGSEC case because it's already 2682 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2683 */ 2684 if (!different_export && 2685 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2686 cs->access & CS_ACCESS_LIMITED)) { 2687 if (! nfs_visible(cs->exi, vp, &different_export)) { 2688 VN_RELE(vp); 2689 return (puterrno4(ENOENT)); 2690 } 2691 } 2692 2693 /* 2694 * If it's a mountpoint, then traverse it. 2695 */ 2696 if (vn_ismntpt(vp)) { 2697 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2698 pre_tvp = vp; /* save pre-traversed vnode */ 2699 2700 /* 2701 * hold pre_tvp to counteract rele by traverse. We will 2702 * need pre_tvp below if checkexport4 fails 2703 */ 2704 VN_HOLD(pre_tvp); 2705 tvp = vp; 2706 if ((error = traverse(&tvp)) != 0) { 2707 VN_RELE(vp); 2708 VN_RELE(pre_tvp); 2709 return (puterrno4(error)); 2710 } 2711 vp = tvp; 2712 different_export = 1; 2713 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2714 /* 2715 * The vfsp comparison is to handle the case where 2716 * a LOFS mount is shared. lo_lookup traverses mount points, 2717 * and NFS is unaware of local fs transistions because 2718 * v_vfsmountedhere isn't set. For this special LOFS case, 2719 * the dir and the obj returned by lookup will have different 2720 * vfs ptrs. 2721 */ 2722 different_export = 1; 2723 } 2724 2725 if (different_export) { 2726 2727 bzero(&fid, sizeof (fid)); 2728 fid.fid_len = MAXFIDSZ; 2729 error = vop_fid_pseudo(vp, &fid); 2730 if (error) { 2731 VN_RELE(vp); 2732 if (pre_tvp) 2733 VN_RELE(pre_tvp); 2734 return (puterrno4(error)); 2735 } 2736 2737 if (dotdot) 2738 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2739 else 2740 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2741 2742 if (exi == NULL) { 2743 if (pre_tvp) { 2744 /* 2745 * If this vnode is a mounted-on vnode, 2746 * but the mounted-on file system is not 2747 * exported, send back the filehandle for 2748 * the mounted-on vnode, not the root of 2749 * the mounted-on file system. 2750 */ 2751 VN_RELE(vp); 2752 vp = pre_tvp; 2753 exi = pre_exi; 2754 } else { 2755 VN_RELE(vp); 2756 return (puterrno4(EACCES)); 2757 } 2758 } else if (pre_tvp) { 2759 /* we're done with pre_tvp now. release extra hold */ 2760 VN_RELE(pre_tvp); 2761 } 2762 2763 cs->exi = exi; 2764 2765 /* 2766 * Now we do a checkauth4. The reason is that 2767 * this client/user may not have access to the new 2768 * exported file system, and if he does, 2769 * the client/user may be mapped to a different uid. 2770 * 2771 * We start with a new cr, because the checkauth4 done 2772 * in the PUT*FH operation over wrote the cred's uid, 2773 * gid, etc, and we want the real thing before calling 2774 * checkauth4() 2775 */ 2776 crfree(cs->cr); 2777 cs->cr = crdup(cs->basecr); 2778 2779 if (cs->vp) 2780 oldvp = cs->vp; 2781 cs->vp = vp; 2782 is_newvp = TRUE; 2783 2784 stat = call_checkauth4(cs, req); 2785 if (stat != NFS4_OK) { 2786 VN_RELE(cs->vp); 2787 cs->vp = oldvp; 2788 return (stat); 2789 } 2790 } 2791 2792 /* 2793 * After various NFS checks, do a label check on the path 2794 * component. The label on this path should either be the 2795 * global zone's label or a zone's label. We are only 2796 * interested in the zone's label because exported files 2797 * in global zone is accessible (though read-only) to 2798 * clients. The exportability/visibility check is already 2799 * done before reaching this code. 2800 */ 2801 if (is_system_labeled()) { 2802 bslabel_t *clabel; 2803 2804 ASSERT(req->rq_label != NULL); 2805 clabel = req->rq_label; 2806 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2807 "got client label from request(1)", struct svc_req *, req); 2808 2809 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2810 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2811 cs->exi)) { 2812 error = EACCES; 2813 goto err_out; 2814 } 2815 } else { 2816 /* 2817 * We grant access to admin_low label clients 2818 * only if the client is trusted, i.e. also 2819 * running Solaris Trusted Extension. 2820 */ 2821 struct sockaddr *ca; 2822 int addr_type; 2823 void *ipaddr; 2824 tsol_tpc_t *tp; 2825 2826 ca = (struct sockaddr *)svc_getrpccaller( 2827 req->rq_xprt)->buf; 2828 if (ca->sa_family == AF_INET) { 2829 addr_type = IPV4_VERSION; 2830 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2831 } else if (ca->sa_family == AF_INET6) { 2832 addr_type = IPV6_VERSION; 2833 ipaddr = &((struct sockaddr_in6 *) 2834 ca)->sin6_addr; 2835 } 2836 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2837 if (tp == NULL || tp->tpc_tp.tp_doi != 2838 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2839 SUN_CIPSO) { 2840 if (tp != NULL) 2841 TPC_RELE(tp); 2842 error = EACCES; 2843 goto err_out; 2844 } 2845 TPC_RELE(tp); 2846 } 2847 } 2848 2849 error = makefh4(&cs->fh, vp, cs->exi); 2850 2851 err_out: 2852 if (error) { 2853 if (is_newvp) { 2854 VN_RELE(cs->vp); 2855 cs->vp = oldvp; 2856 } else 2857 VN_RELE(vp); 2858 return (puterrno4(error)); 2859 } 2860 2861 if (!is_newvp) { 2862 if (cs->vp) 2863 VN_RELE(cs->vp); 2864 cs->vp = vp; 2865 } else if (oldvp) 2866 VN_RELE(oldvp); 2867 2868 /* 2869 * if did lookup on attrdir and didn't lookup .., set named 2870 * attr fh flag 2871 */ 2872 if (attrdir && ! dotdot) 2873 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2874 2875 /* Assume false for now, open proc will set this */ 2876 cs->mandlock = FALSE; 2877 2878 return (NFS4_OK); 2879 } 2880 2881 /* ARGSUSED */ 2882 static void 2883 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2884 struct compound_state *cs) 2885 { 2886 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2887 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2888 char *nm; 2889 uint_t len; 2890 struct sockaddr *ca; 2891 char *name = NULL; 2892 2893 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2894 LOOKUP4args *, args); 2895 2896 if (cs->vp == NULL) { 2897 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2898 goto out; 2899 } 2900 2901 if (cs->vp->v_type == VLNK) { 2902 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2903 goto out; 2904 } 2905 2906 if (cs->vp->v_type != VDIR) { 2907 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2908 goto out; 2909 } 2910 2911 if (!utf8_dir_verify(&args->objname)) { 2912 *cs->statusp = resp->status = NFS4ERR_INVAL; 2913 goto out; 2914 } 2915 2916 nm = utf8_to_str(&args->objname, &len, NULL); 2917 if (nm == NULL) { 2918 *cs->statusp = resp->status = NFS4ERR_INVAL; 2919 goto out; 2920 } 2921 2922 if (len > MAXNAMELEN) { 2923 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2924 kmem_free(nm, len); 2925 goto out; 2926 } 2927 2928 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2929 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2930 MAXPATHLEN + 1); 2931 2932 if (name == NULL) { 2933 *cs->statusp = resp->status = NFS4ERR_INVAL; 2934 kmem_free(nm, len); 2935 goto out; 2936 } 2937 2938 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 2939 2940 if (name != nm) 2941 kmem_free(name, MAXPATHLEN + 1); 2942 kmem_free(nm, len); 2943 2944 out: 2945 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2946 LOOKUP4res *, resp); 2947 } 2948 2949 /* ARGSUSED */ 2950 static void 2951 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2952 struct compound_state *cs) 2953 { 2954 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2955 2956 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2957 2958 if (cs->vp == NULL) { 2959 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2960 goto out; 2961 } 2962 2963 if (cs->vp->v_type != VDIR) { 2964 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2965 goto out; 2966 } 2967 2968 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 2969 2970 /* 2971 * From NFSV4 Specification, LOOKUPP should not check for 2972 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2973 */ 2974 if (resp->status == NFS4ERR_WRONGSEC) { 2975 *cs->statusp = resp->status = NFS4_OK; 2976 } 2977 2978 out: 2979 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2980 LOOKUPP4res *, resp); 2981 } 2982 2983 2984 /*ARGSUSED2*/ 2985 static void 2986 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2987 struct compound_state *cs) 2988 { 2989 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2990 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2991 vnode_t *avp = NULL; 2992 int lookup_flags = LOOKUP_XATTR, error; 2993 int exp_ro = 0; 2994 2995 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 2996 OPENATTR4args *, args); 2997 2998 if (cs->vp == NULL) { 2999 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3000 goto out; 3001 } 3002 3003 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3004 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3005 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3006 goto out; 3007 } 3008 3009 /* 3010 * If file system supports passing ACE mask to VOP_ACCESS then 3011 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3012 */ 3013 3014 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3015 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3016 V_ACE_MASK, cs->cr, NULL); 3017 else 3018 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3019 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3020 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3021 3022 if (error) { 3023 *cs->statusp = resp->status = puterrno4(EACCES); 3024 goto out; 3025 } 3026 3027 /* 3028 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3029 * the file system is exported read-only -- regardless of 3030 * createdir flag. Otherwise the attrdir would be created 3031 * (assuming server fs isn't mounted readonly locally). If 3032 * VOP_LOOKUP returns ENOENT in this case, the error will 3033 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3034 * because specfs has no VOP_LOOKUP op, so the macro would 3035 * return ENOSYS. EINVAL is returned by all (current) 3036 * Solaris file system implementations when any of their 3037 * restrictions are violated (xattr(dir) can't have xattrdir). 3038 * Returning NOTSUPP is more appropriate in this case 3039 * because the object will never be able to have an attrdir. 3040 */ 3041 if (args->createdir && ! (exp_ro = rdonly4(cs->exi, cs->vp, req))) 3042 lookup_flags |= CREATE_XATTR_DIR; 3043 3044 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3045 NULL, NULL, NULL); 3046 3047 if (error) { 3048 if (error == ENOENT && args->createdir && exp_ro) 3049 *cs->statusp = resp->status = puterrno4(EROFS); 3050 else if (error == EINVAL || error == ENOSYS) 3051 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3052 else 3053 *cs->statusp = resp->status = puterrno4(error); 3054 goto out; 3055 } 3056 3057 ASSERT(avp->v_flag & V_XATTRDIR); 3058 3059 error = makefh4(&cs->fh, avp, cs->exi); 3060 3061 if (error) { 3062 VN_RELE(avp); 3063 *cs->statusp = resp->status = puterrno4(error); 3064 goto out; 3065 } 3066 3067 VN_RELE(cs->vp); 3068 cs->vp = avp; 3069 3070 /* 3071 * There is no requirement for an attrdir fh flag 3072 * because the attrdir has a vnode flag to distinguish 3073 * it from regular (non-xattr) directories. The 3074 * FH4_ATTRDIR flag is set for future sanity checks. 3075 */ 3076 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3077 *cs->statusp = resp->status = NFS4_OK; 3078 3079 out: 3080 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3081 OPENATTR4res *, resp); 3082 } 3083 3084 static int 3085 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3086 caller_context_t *ct) 3087 { 3088 int error; 3089 int i; 3090 clock_t delaytime; 3091 3092 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3093 3094 /* 3095 * Don't block on mandatory locks. If this routine returns 3096 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3097 */ 3098 uio->uio_fmode = FNONBLOCK; 3099 3100 for (i = 0; i < rfs4_maxlock_tries; i++) { 3101 3102 3103 if (direction == FREAD) { 3104 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3105 error = VOP_READ(vp, uio, ioflag, cred, ct); 3106 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3107 } else { 3108 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3109 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3110 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3111 } 3112 3113 if (error != EAGAIN) 3114 break; 3115 3116 if (i < rfs4_maxlock_tries - 1) { 3117 delay(delaytime); 3118 delaytime *= 2; 3119 } 3120 } 3121 3122 return (error); 3123 } 3124 3125 /* ARGSUSED */ 3126 static void 3127 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3128 struct compound_state *cs) 3129 { 3130 READ4args *args = &argop->nfs_argop4_u.opread; 3131 READ4res *resp = &resop->nfs_resop4_u.opread; 3132 int error; 3133 int verror; 3134 vnode_t *vp; 3135 struct vattr va; 3136 struct iovec iov; 3137 struct uio uio; 3138 u_offset_t offset; 3139 bool_t *deleg = &cs->deleg; 3140 nfsstat4 stat; 3141 int in_crit = 0; 3142 mblk_t *mp = NULL; 3143 int alloc_err = 0; 3144 int rdma_used = 0; 3145 int loaned_buffers; 3146 caller_context_t ct; 3147 struct uio *uiop; 3148 3149 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3150 READ4args, args); 3151 3152 vp = cs->vp; 3153 if (vp == NULL) { 3154 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3155 goto out; 3156 } 3157 if (cs->access == CS_ACCESS_DENIED) { 3158 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3159 goto out; 3160 } 3161 3162 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3163 deleg, TRUE, &ct)) != NFS4_OK) { 3164 *cs->statusp = resp->status = stat; 3165 goto out; 3166 } 3167 3168 /* 3169 * Enter the critical region before calling VOP_RWLOCK 3170 * to avoid a deadlock with write requests. 3171 */ 3172 if (nbl_need_check(vp)) { 3173 nbl_start_crit(vp, RW_READER); 3174 in_crit = 1; 3175 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3176 &ct)) { 3177 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3178 goto out; 3179 } 3180 } 3181 3182 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3183 deleg, TRUE, &ct)) != NFS4_OK) { 3184 *cs->statusp = resp->status = stat; 3185 goto out; 3186 } 3187 3188 if (args->wlist) 3189 rdma_used = 1; 3190 3191 /* use loaned buffers for TCP */ 3192 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3193 3194 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3195 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3196 3197 /* 3198 * If we can't get the attributes, then we can't do the 3199 * right access checking. So, we'll fail the request. 3200 */ 3201 if (verror) { 3202 *cs->statusp = resp->status = puterrno4(verror); 3203 goto out; 3204 } 3205 3206 if (vp->v_type != VREG) { 3207 *cs->statusp = resp->status = 3208 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3209 goto out; 3210 } 3211 3212 if (crgetuid(cs->cr) != va.va_uid && 3213 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3214 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3215 *cs->statusp = resp->status = puterrno4(error); 3216 goto out; 3217 } 3218 3219 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3220 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3221 goto out; 3222 } 3223 3224 offset = args->offset; 3225 if (offset >= va.va_size) { 3226 *cs->statusp = resp->status = NFS4_OK; 3227 resp->eof = TRUE; 3228 resp->data_len = 0; 3229 resp->data_val = NULL; 3230 resp->mblk = NULL; 3231 /* RDMA */ 3232 resp->wlist = args->wlist; 3233 resp->wlist_len = resp->data_len; 3234 *cs->statusp = resp->status = NFS4_OK; 3235 if (resp->wlist) 3236 clist_zero_len(resp->wlist); 3237 goto out; 3238 } 3239 3240 if (args->count == 0) { 3241 *cs->statusp = resp->status = NFS4_OK; 3242 resp->eof = FALSE; 3243 resp->data_len = 0; 3244 resp->data_val = NULL; 3245 resp->mblk = NULL; 3246 /* RDMA */ 3247 resp->wlist = args->wlist; 3248 resp->wlist_len = resp->data_len; 3249 if (resp->wlist) 3250 clist_zero_len(resp->wlist); 3251 goto out; 3252 } 3253 3254 /* 3255 * Do not allocate memory more than maximum allowed 3256 * transfer size 3257 */ 3258 if (args->count > rfs4_tsize(req)) 3259 args->count = rfs4_tsize(req); 3260 3261 if (loaned_buffers) { 3262 uiop = (uio_t *)rfs_setup_xuio(vp); 3263 ASSERT(uiop != NULL); 3264 uiop->uio_segflg = UIO_SYSSPACE; 3265 uiop->uio_loffset = args->offset; 3266 uiop->uio_resid = args->count; 3267 3268 /* Jump to do the read if successful */ 3269 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3270 /* 3271 * Need to hold the vnode until after VOP_RETZCBUF() 3272 * is called. 3273 */ 3274 VN_HOLD(vp); 3275 goto doio_read; 3276 } 3277 3278 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3279 uiop->uio_loffset, int, uiop->uio_resid); 3280 3281 uiop->uio_extflg = 0; 3282 3283 /* failure to setup for zero copy */ 3284 rfs_free_xuio((void *)uiop); 3285 loaned_buffers = 0; 3286 } 3287 3288 /* 3289 * If returning data via RDMA Write, then grab the chunk list. If we 3290 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3291 */ 3292 if (rdma_used) { 3293 mp = NULL; 3294 (void) rdma_get_wchunk(req, &iov, args->wlist); 3295 } else { 3296 /* 3297 * mp will contain the data to be sent out in the read reply. 3298 * It will be freed after the reply has been sent. Let's 3299 * roundup the data to a BYTES_PER_XDR_UNIT multiple, so that 3300 * the call to xdrmblk_putmblk() never fails. If the first 3301 * alloc of the requested size fails, then decrease the size to 3302 * something more reasonable and wait for the allocation to 3303 * occur. 3304 */ 3305 mp = allocb(RNDUP(args->count), BPRI_MED); 3306 if (mp == NULL) { 3307 if (args->count > MAXBSIZE) 3308 args->count = MAXBSIZE; 3309 mp = allocb_wait(RNDUP(args->count), BPRI_MED, 3310 STR_NOSIG, &alloc_err); 3311 } 3312 ASSERT(mp != NULL); 3313 ASSERT(alloc_err == 0); 3314 3315 iov.iov_base = (caddr_t)mp->b_datap->db_base; 3316 iov.iov_len = args->count; 3317 } 3318 3319 uio.uio_iov = &iov; 3320 uio.uio_iovcnt = 1; 3321 uio.uio_segflg = UIO_SYSSPACE; 3322 uio.uio_extflg = UIO_COPY_CACHED; 3323 uio.uio_loffset = args->offset; 3324 uio.uio_resid = args->count; 3325 uiop = &uio; 3326 3327 doio_read: 3328 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3329 3330 va.va_mask = AT_SIZE; 3331 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3332 3333 if (error) { 3334 if (mp) 3335 freemsg(mp); 3336 *cs->statusp = resp->status = puterrno4(error); 3337 goto out; 3338 } 3339 3340 /* make mblk using zc buffers */ 3341 if (loaned_buffers) { 3342 mp = uio_to_mblk(uiop); 3343 ASSERT(mp != NULL); 3344 } 3345 3346 *cs->statusp = resp->status = NFS4_OK; 3347 3348 ASSERT(uiop->uio_resid >= 0); 3349 resp->data_len = args->count - uiop->uio_resid; 3350 if (mp) { 3351 resp->data_val = (char *)mp->b_datap->db_base; 3352 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3353 } else { 3354 resp->data_val = (caddr_t)iov.iov_base; 3355 } 3356 3357 resp->mblk = mp; 3358 3359 if (!verror && offset + resp->data_len == va.va_size) 3360 resp->eof = TRUE; 3361 else 3362 resp->eof = FALSE; 3363 3364 if (rdma_used) { 3365 if (!rdma_setup_read_data4(args, resp)) { 3366 *cs->statusp = resp->status = NFS4ERR_INVAL; 3367 } 3368 } else { 3369 resp->wlist = NULL; 3370 } 3371 3372 out: 3373 if (in_crit) 3374 nbl_end_crit(vp); 3375 3376 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3377 READ4res *, resp); 3378 } 3379 3380 static void 3381 rfs4_op_read_free(nfs_resop4 *resop) 3382 { 3383 READ4res *resp = &resop->nfs_resop4_u.opread; 3384 3385 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3386 freemsg(resp->mblk); 3387 resp->mblk = NULL; 3388 resp->data_val = NULL; 3389 resp->data_len = 0; 3390 } 3391 } 3392 3393 static void 3394 rfs4_op_readdir_free(nfs_resop4 * resop) 3395 { 3396 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3397 3398 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3399 freeb(resp->mblk); 3400 resp->mblk = NULL; 3401 resp->data_len = 0; 3402 } 3403 } 3404 3405 3406 /* ARGSUSED */ 3407 static void 3408 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3409 struct compound_state *cs) 3410 { 3411 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3412 int error; 3413 vnode_t *vp; 3414 struct exportinfo *exi, *sav_exi; 3415 nfs_fh4_fmt_t *fh_fmtp; 3416 3417 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3418 3419 if (cs->vp) { 3420 VN_RELE(cs->vp); 3421 cs->vp = NULL; 3422 } 3423 3424 if (cs->cr) 3425 crfree(cs->cr); 3426 3427 cs->cr = crdup(cs->basecr); 3428 3429 vp = exi_public->exi_vp; 3430 if (vp == NULL) { 3431 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3432 goto out; 3433 } 3434 3435 error = makefh4(&cs->fh, vp, exi_public); 3436 if (error != 0) { 3437 *cs->statusp = resp->status = puterrno4(error); 3438 goto out; 3439 } 3440 sav_exi = cs->exi; 3441 if (exi_public == exi_root) { 3442 /* 3443 * No filesystem is actually shared public, so we default 3444 * to exi_root. In this case, we must check whether root 3445 * is exported. 3446 */ 3447 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3448 3449 /* 3450 * if root filesystem is exported, the exportinfo struct that we 3451 * should use is what checkexport4 returns, because root_exi is 3452 * actually a mostly empty struct. 3453 */ 3454 exi = checkexport4(&fh_fmtp->fh4_fsid, 3455 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3456 cs->exi = ((exi != NULL) ? exi : exi_public); 3457 } else { 3458 /* 3459 * it's a properly shared filesystem 3460 */ 3461 cs->exi = exi_public; 3462 } 3463 3464 if (is_system_labeled()) { 3465 bslabel_t *clabel; 3466 3467 ASSERT(req->rq_label != NULL); 3468 clabel = req->rq_label; 3469 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3470 "got client label from request(1)", 3471 struct svc_req *, req); 3472 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3473 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3474 cs->exi)) { 3475 *cs->statusp = resp->status = 3476 NFS4ERR_SERVERFAULT; 3477 goto out; 3478 } 3479 } 3480 } 3481 3482 VN_HOLD(vp); 3483 cs->vp = vp; 3484 3485 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3486 VN_RELE(cs->vp); 3487 cs->vp = NULL; 3488 cs->exi = sav_exi; 3489 goto out; 3490 } 3491 3492 *cs->statusp = resp->status = NFS4_OK; 3493 out: 3494 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3495 PUTPUBFH4res *, resp); 3496 } 3497 3498 /* 3499 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3500 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3501 * or joe have restrictive search permissions, then we shouldn't let 3502 * the client get a file handle. This is easy to enforce. However, we 3503 * don't know what security flavor should be used until we resolve the 3504 * path name. Another complication is uid mapping. If root is 3505 * the user, then it will be mapped to the anonymous user by default, 3506 * but we won't know that till we've resolved the path name. And we won't 3507 * know what the anonymous user is. 3508 * Luckily, SECINFO is specified to take a full filename. 3509 * So what we will have to in rfs4_op_lookup is check that flavor of 3510 * the target object matches that of the request, and if root was the 3511 * caller, check for the root= and anon= options, and if necessary, 3512 * repeat the lookup using the right cred_t. But that's not done yet. 3513 */ 3514 /* ARGSUSED */ 3515 static void 3516 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3517 struct compound_state *cs) 3518 { 3519 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3520 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3521 nfs_fh4_fmt_t *fh_fmtp; 3522 3523 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3524 PUTFH4args *, args); 3525 3526 if (cs->vp) { 3527 VN_RELE(cs->vp); 3528 cs->vp = NULL; 3529 } 3530 3531 if (cs->cr) { 3532 crfree(cs->cr); 3533 cs->cr = NULL; 3534 } 3535 3536 3537 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3538 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3539 goto out; 3540 } 3541 3542 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3543 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3544 NULL); 3545 3546 if (cs->exi == NULL) { 3547 *cs->statusp = resp->status = NFS4ERR_STALE; 3548 goto out; 3549 } 3550 3551 cs->cr = crdup(cs->basecr); 3552 3553 ASSERT(cs->cr != NULL); 3554 3555 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3556 *cs->statusp = resp->status; 3557 goto out; 3558 } 3559 3560 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3561 VN_RELE(cs->vp); 3562 cs->vp = NULL; 3563 goto out; 3564 } 3565 3566 nfs_fh4_copy(&args->object, &cs->fh); 3567 *cs->statusp = resp->status = NFS4_OK; 3568 cs->deleg = FALSE; 3569 3570 out: 3571 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3572 PUTFH4res *, resp); 3573 } 3574 3575 /* ARGSUSED */ 3576 static void 3577 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3578 struct compound_state *cs) 3579 { 3580 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3581 int error; 3582 fid_t fid; 3583 struct exportinfo *exi, *sav_exi; 3584 3585 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3586 3587 if (cs->vp) { 3588 VN_RELE(cs->vp); 3589 cs->vp = NULL; 3590 } 3591 3592 if (cs->cr) 3593 crfree(cs->cr); 3594 3595 cs->cr = crdup(cs->basecr); 3596 3597 /* 3598 * Using rootdir, the system root vnode, 3599 * get its fid. 3600 */ 3601 bzero(&fid, sizeof (fid)); 3602 fid.fid_len = MAXFIDSZ; 3603 error = vop_fid_pseudo(rootdir, &fid); 3604 if (error != 0) { 3605 *cs->statusp = resp->status = puterrno4(error); 3606 goto out; 3607 } 3608 3609 /* 3610 * Then use the root fsid & fid it to find out if it's exported 3611 * 3612 * If the server root isn't exported directly, then 3613 * it should at least be a pseudo export based on 3614 * one or more exports further down in the server's 3615 * file tree. 3616 */ 3617 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3618 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3619 NFS4_DEBUG(rfs4_debug, 3620 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3621 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3622 goto out; 3623 } 3624 3625 /* 3626 * Now make a filehandle based on the root 3627 * export and root vnode. 3628 */ 3629 error = makefh4(&cs->fh, rootdir, exi); 3630 if (error != 0) { 3631 *cs->statusp = resp->status = puterrno4(error); 3632 goto out; 3633 } 3634 3635 sav_exi = cs->exi; 3636 cs->exi = exi; 3637 3638 VN_HOLD(rootdir); 3639 cs->vp = rootdir; 3640 3641 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3642 VN_RELE(rootdir); 3643 cs->vp = NULL; 3644 cs->exi = sav_exi; 3645 goto out; 3646 } 3647 3648 *cs->statusp = resp->status = NFS4_OK; 3649 cs->deleg = FALSE; 3650 out: 3651 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3652 PUTROOTFH4res *, resp); 3653 } 3654 3655 /* 3656 * A directory entry is a valid nfsv4 entry if 3657 * - it has a non-zero ino 3658 * - it is not a dot or dotdot name 3659 * - it is visible in a pseudo export or in a real export that can 3660 * only have a limited view. 3661 */ 3662 static bool_t 3663 valid_nfs4_entry(struct exportinfo *exi, struct dirent64 *dp, 3664 int *expseudo, int check_visible) 3665 { 3666 if (dp->d_ino == 0 || NFS_IS_DOTNAME(dp->d_name)) { 3667 *expseudo = 0; 3668 return (FALSE); 3669 } 3670 3671 if (! check_visible) { 3672 *expseudo = 0; 3673 return (TRUE); 3674 } 3675 3676 return (nfs_visible_inode(exi, dp->d_ino, expseudo)); 3677 } 3678 3679 /* 3680 * set_rdattr_params sets up the variables used to manage what information 3681 * to get for each directory entry. 3682 */ 3683 static nfsstat4 3684 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3685 bitmap4 attrs, bool_t *need_to_lookup) 3686 { 3687 uint_t va_mask; 3688 nfsstat4 status; 3689 bitmap4 objbits; 3690 3691 status = bitmap4_to_attrmask(attrs, sargp); 3692 if (status != NFS4_OK) { 3693 /* 3694 * could not even figure attr mask 3695 */ 3696 return (status); 3697 } 3698 va_mask = sargp->vap->va_mask; 3699 3700 /* 3701 * dirent's d_ino is always correct value for mounted_on_fileid. 3702 * mntdfid_set is set once here, but mounted_on_fileid is 3703 * set in main dirent processing loop for each dirent. 3704 * The mntdfid_set is a simple optimization that lets the 3705 * server attr code avoid work when caller is readdir. 3706 */ 3707 sargp->mntdfid_set = TRUE; 3708 3709 /* 3710 * Lookup entry only if client asked for any of the following: 3711 * a) vattr attrs 3712 * b) vfs attrs 3713 * c) attrs w/per-object scope requested (change, filehandle, etc) 3714 * other than mounted_on_fileid (which we can take from dirent) 3715 */ 3716 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3717 3718 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3719 *need_to_lookup = TRUE; 3720 else 3721 *need_to_lookup = FALSE; 3722 3723 if (sargp->sbp == NULL) 3724 return (NFS4_OK); 3725 3726 /* 3727 * If filesystem attrs are requested, get them now from the 3728 * directory vp, as most entries will have same filesystem. The only 3729 * exception are mounted over entries but we handle 3730 * those as we go (XXX mounted over detection not yet implemented). 3731 */ 3732 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3733 status = bitmap4_get_sysattrs(sargp); 3734 sargp->vap->va_mask = va_mask; 3735 3736 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3737 /* 3738 * Failed to get filesystem attributes. 3739 * Return a rdattr_error for each entry, but don't fail. 3740 * However, don't get any obj-dependent attrs. 3741 */ 3742 sargp->rdattr_error = status; /* for rdattr_error */ 3743 *need_to_lookup = FALSE; 3744 /* 3745 * At least get fileid for regular readdir output 3746 */ 3747 sargp->vap->va_mask &= AT_NODEID; 3748 status = NFS4_OK; 3749 } 3750 3751 return (status); 3752 } 3753 3754 /* 3755 * readlink: args: CURRENT_FH. 3756 * res: status. If success - CURRENT_FH unchanged, return linktext. 3757 */ 3758 3759 /* ARGSUSED */ 3760 static void 3761 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3762 struct compound_state *cs) 3763 { 3764 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3765 int error; 3766 vnode_t *vp; 3767 struct iovec iov; 3768 struct vattr va; 3769 struct uio uio; 3770 char *data; 3771 struct sockaddr *ca; 3772 char *name = NULL; 3773 int is_referral; 3774 3775 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3776 3777 /* CURRENT_FH: directory */ 3778 vp = cs->vp; 3779 if (vp == NULL) { 3780 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3781 goto out; 3782 } 3783 3784 if (cs->access == CS_ACCESS_DENIED) { 3785 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3786 goto out; 3787 } 3788 3789 /* Is it a referral? */ 3790 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3791 3792 is_referral = 1; 3793 3794 } else { 3795 3796 is_referral = 0; 3797 3798 if (vp->v_type == VDIR) { 3799 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3800 goto out; 3801 } 3802 3803 if (vp->v_type != VLNK) { 3804 *cs->statusp = resp->status = NFS4ERR_INVAL; 3805 goto out; 3806 } 3807 3808 } 3809 3810 va.va_mask = AT_MODE; 3811 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3812 if (error) { 3813 *cs->statusp = resp->status = puterrno4(error); 3814 goto out; 3815 } 3816 3817 if (MANDLOCK(vp, va.va_mode)) { 3818 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3819 goto out; 3820 } 3821 3822 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3823 3824 if (is_referral) { 3825 char *s; 3826 size_t strsz; 3827 3828 /* Get an artificial symlink based on a referral */ 3829 s = build_symlink(vp, cs->cr, &strsz); 3830 global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++; 3831 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3832 vnode_t *, vp, char *, s); 3833 if (s == NULL) 3834 error = EINVAL; 3835 else { 3836 error = 0; 3837 (void) strlcpy(data, s, MAXPATHLEN + 1); 3838 kmem_free(s, strsz); 3839 } 3840 3841 } else { 3842 3843 iov.iov_base = data; 3844 iov.iov_len = MAXPATHLEN; 3845 uio.uio_iov = &iov; 3846 uio.uio_iovcnt = 1; 3847 uio.uio_segflg = UIO_SYSSPACE; 3848 uio.uio_extflg = UIO_COPY_CACHED; 3849 uio.uio_loffset = 0; 3850 uio.uio_resid = MAXPATHLEN; 3851 3852 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3853 3854 if (!error) 3855 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3856 } 3857 3858 if (error) { 3859 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3860 *cs->statusp = resp->status = puterrno4(error); 3861 goto out; 3862 } 3863 3864 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3865 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3866 MAXPATHLEN + 1); 3867 3868 if (name == NULL) { 3869 /* 3870 * Even though the conversion failed, we return 3871 * something. We just don't translate it. 3872 */ 3873 name = data; 3874 } 3875 3876 /* 3877 * treat link name as data 3878 */ 3879 (void) str_to_utf8(name, &resp->link); 3880 3881 if (name != data) 3882 kmem_free(name, MAXPATHLEN + 1); 3883 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3884 *cs->statusp = resp->status = NFS4_OK; 3885 3886 out: 3887 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3888 READLINK4res *, resp); 3889 } 3890 3891 static void 3892 rfs4_op_readlink_free(nfs_resop4 *resop) 3893 { 3894 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3895 utf8string *symlink = &resp->link; 3896 3897 if (symlink->utf8string_val) { 3898 UTF8STRING_FREE(*symlink) 3899 } 3900 } 3901 3902 /* 3903 * release_lockowner: 3904 * Release any state associated with the supplied 3905 * lockowner. Note if any lo_state is holding locks we will not 3906 * rele that lo_state and thus the lockowner will not be destroyed. 3907 * A client using lock after the lock owner stateid has been released 3908 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3909 * to reissue the lock with new_lock_owner set to TRUE. 3910 * args: lock_owner 3911 * res: status 3912 */ 3913 /* ARGSUSED */ 3914 static void 3915 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3916 struct svc_req *req, struct compound_state *cs) 3917 { 3918 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3919 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3920 rfs4_lockowner_t *lo; 3921 rfs4_openowner_t *oo; 3922 rfs4_state_t *sp; 3923 rfs4_lo_state_t *lsp; 3924 rfs4_client_t *cp; 3925 bool_t create = FALSE; 3926 locklist_t *llist; 3927 sysid_t sysid; 3928 3929 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3930 cs, RELEASE_LOCKOWNER4args *, ap); 3931 3932 /* Make sure there is a clientid around for this request */ 3933 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3934 3935 if (cp == NULL) { 3936 *cs->statusp = resp->status = 3937 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3938 goto out; 3939 } 3940 rfs4_client_rele(cp); 3941 3942 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3943 if (lo == NULL) { 3944 *cs->statusp = resp->status = NFS4_OK; 3945 goto out; 3946 } 3947 ASSERT(lo->rl_client != NULL); 3948 3949 /* 3950 * Check for EXPIRED client. If so will reap state with in a lease 3951 * period or on next set_clientid_confirm step 3952 */ 3953 if (rfs4_lease_expired(lo->rl_client)) { 3954 rfs4_lockowner_rele(lo); 3955 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3956 goto out; 3957 } 3958 3959 /* 3960 * If no sysid has been assigned, then no locks exist; just return. 3961 */ 3962 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3963 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 3964 rfs4_lockowner_rele(lo); 3965 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3966 goto out; 3967 } 3968 3969 sysid = lo->rl_client->rc_sysidt; 3970 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3971 3972 /* 3973 * Mark the lockowner invalid. 3974 */ 3975 rfs4_dbe_hide(lo->rl_dbe); 3976 3977 /* 3978 * sysid-pid pair should now not be used since the lockowner is 3979 * invalid. If the client were to instantiate the lockowner again 3980 * it would be assigned a new pid. Thus we can get the list of 3981 * current locks. 3982 */ 3983 3984 llist = flk_get_active_locks(sysid, lo->rl_pid); 3985 /* If we are still holding locks fail */ 3986 if (llist != NULL) { 3987 3988 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3989 3990 flk_free_locklist(llist); 3991 /* 3992 * We need to unhide the lockowner so the client can 3993 * try it again. The bad thing here is if the client 3994 * has a logic error that took it here in the first place 3995 * he probably has lost accounting of the locks that it 3996 * is holding. So we may have dangling state until the 3997 * open owner state is reaped via close. One scenario 3998 * that could possibly occur is that the client has 3999 * sent the unlock request(s) in separate threads 4000 * and has not waited for the replies before sending the 4001 * RELEASE_LOCKOWNER request. Presumably, it would expect 4002 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 4003 * reissuing the request. 4004 */ 4005 rfs4_dbe_unhide(lo->rl_dbe); 4006 rfs4_lockowner_rele(lo); 4007 goto out; 4008 } 4009 4010 /* 4011 * For the corresponding client we need to check each open 4012 * owner for any opens that have lockowner state associated 4013 * with this lockowner. 4014 */ 4015 4016 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4017 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 4018 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 4019 4020 rfs4_dbe_lock(oo->ro_dbe); 4021 for (sp = list_head(&oo->ro_statelist); sp != NULL; 4022 sp = list_next(&oo->ro_statelist, sp)) { 4023 4024 rfs4_dbe_lock(sp->rs_dbe); 4025 for (lsp = list_head(&sp->rs_lostatelist); 4026 lsp != NULL; 4027 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4028 if (lsp->rls_locker == lo) { 4029 rfs4_dbe_lock(lsp->rls_dbe); 4030 rfs4_dbe_invalidate(lsp->rls_dbe); 4031 rfs4_dbe_unlock(lsp->rls_dbe); 4032 } 4033 } 4034 rfs4_dbe_unlock(sp->rs_dbe); 4035 } 4036 rfs4_dbe_unlock(oo->ro_dbe); 4037 } 4038 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4039 4040 rfs4_lockowner_rele(lo); 4041 4042 *cs->statusp = resp->status = NFS4_OK; 4043 4044 out: 4045 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4046 cs, RELEASE_LOCKOWNER4res *, resp); 4047 } 4048 4049 /* 4050 * short utility function to lookup a file and recall the delegation 4051 */ 4052 static rfs4_file_t * 4053 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4054 int *lkup_error, cred_t *cr) 4055 { 4056 vnode_t *vp; 4057 rfs4_file_t *fp = NULL; 4058 bool_t fcreate = FALSE; 4059 int error; 4060 4061 if (vpp) 4062 *vpp = NULL; 4063 4064 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4065 NULL)) == 0) { 4066 if (vp->v_type == VREG) 4067 fp = rfs4_findfile(vp, NULL, &fcreate); 4068 if (vpp) 4069 *vpp = vp; 4070 else 4071 VN_RELE(vp); 4072 } 4073 4074 if (lkup_error) 4075 *lkup_error = error; 4076 4077 return (fp); 4078 } 4079 4080 /* 4081 * remove: args: CURRENT_FH: directory; name. 4082 * res: status. If success - CURRENT_FH unchanged, return change_info 4083 * for directory. 4084 */ 4085 /* ARGSUSED */ 4086 static void 4087 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4088 struct compound_state *cs) 4089 { 4090 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4091 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4092 int error; 4093 vnode_t *dvp, *vp; 4094 struct vattr bdva, idva, adva; 4095 char *nm; 4096 uint_t len; 4097 rfs4_file_t *fp; 4098 int in_crit = 0; 4099 bslabel_t *clabel; 4100 struct sockaddr *ca; 4101 char *name = NULL; 4102 4103 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4104 REMOVE4args *, args); 4105 4106 /* CURRENT_FH: directory */ 4107 dvp = cs->vp; 4108 if (dvp == NULL) { 4109 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4110 goto out; 4111 } 4112 4113 if (cs->access == CS_ACCESS_DENIED) { 4114 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4115 goto out; 4116 } 4117 4118 /* 4119 * If there is an unshared filesystem mounted on this vnode, 4120 * Do not allow to remove anything in this directory. 4121 */ 4122 if (vn_ismntpt(dvp)) { 4123 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4124 goto out; 4125 } 4126 4127 if (dvp->v_type != VDIR) { 4128 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4129 goto out; 4130 } 4131 4132 if (!utf8_dir_verify(&args->target)) { 4133 *cs->statusp = resp->status = NFS4ERR_INVAL; 4134 goto out; 4135 } 4136 4137 /* 4138 * Lookup the file so that we can check if it's a directory 4139 */ 4140 nm = utf8_to_fn(&args->target, &len, NULL); 4141 if (nm == NULL) { 4142 *cs->statusp = resp->status = NFS4ERR_INVAL; 4143 goto out; 4144 } 4145 4146 if (len > MAXNAMELEN) { 4147 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4148 kmem_free(nm, len); 4149 goto out; 4150 } 4151 4152 if (rdonly4(cs->exi, cs->vp, req)) { 4153 *cs->statusp = resp->status = NFS4ERR_ROFS; 4154 kmem_free(nm, len); 4155 goto out; 4156 } 4157 4158 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4159 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4160 MAXPATHLEN + 1); 4161 4162 if (name == NULL) { 4163 *cs->statusp = resp->status = NFS4ERR_INVAL; 4164 kmem_free(nm, len); 4165 goto out; 4166 } 4167 4168 /* 4169 * Lookup the file to determine type and while we are see if 4170 * there is a file struct around and check for delegation. 4171 * We don't need to acquire va_seq before this lookup, if 4172 * it causes an update, cinfo.before will not match, which will 4173 * trigger a cache flush even if atomic is TRUE. 4174 */ 4175 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4176 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4177 NULL)) { 4178 VN_RELE(vp); 4179 rfs4_file_rele(fp); 4180 *cs->statusp = resp->status = NFS4ERR_DELAY; 4181 if (nm != name) 4182 kmem_free(name, MAXPATHLEN + 1); 4183 kmem_free(nm, len); 4184 goto out; 4185 } 4186 } 4187 4188 /* Didn't find anything to remove */ 4189 if (vp == NULL) { 4190 *cs->statusp = resp->status = error; 4191 if (nm != name) 4192 kmem_free(name, MAXPATHLEN + 1); 4193 kmem_free(nm, len); 4194 goto out; 4195 } 4196 4197 if (nbl_need_check(vp)) { 4198 nbl_start_crit(vp, RW_READER); 4199 in_crit = 1; 4200 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4201 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4202 if (nm != name) 4203 kmem_free(name, MAXPATHLEN + 1); 4204 kmem_free(nm, len); 4205 nbl_end_crit(vp); 4206 VN_RELE(vp); 4207 if (fp) { 4208 rfs4_clear_dont_grant(fp); 4209 rfs4_file_rele(fp); 4210 } 4211 goto out; 4212 } 4213 } 4214 4215 /* check label before allowing removal */ 4216 if (is_system_labeled()) { 4217 ASSERT(req->rq_label != NULL); 4218 clabel = req->rq_label; 4219 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4220 "got client label from request(1)", 4221 struct svc_req *, req); 4222 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4223 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4224 cs->exi)) { 4225 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4226 if (name != nm) 4227 kmem_free(name, MAXPATHLEN + 1); 4228 kmem_free(nm, len); 4229 if (in_crit) 4230 nbl_end_crit(vp); 4231 VN_RELE(vp); 4232 if (fp) { 4233 rfs4_clear_dont_grant(fp); 4234 rfs4_file_rele(fp); 4235 } 4236 goto out; 4237 } 4238 } 4239 } 4240 4241 /* Get dir "before" change value */ 4242 bdva.va_mask = AT_CTIME|AT_SEQ; 4243 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4244 if (error) { 4245 *cs->statusp = resp->status = puterrno4(error); 4246 if (nm != name) 4247 kmem_free(name, MAXPATHLEN + 1); 4248 kmem_free(nm, len); 4249 if (in_crit) 4250 nbl_end_crit(vp); 4251 VN_RELE(vp); 4252 if (fp) { 4253 rfs4_clear_dont_grant(fp); 4254 rfs4_file_rele(fp); 4255 } 4256 goto out; 4257 } 4258 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4259 4260 /* Actually do the REMOVE operation */ 4261 if (vp->v_type == VDIR) { 4262 /* 4263 * Can't remove a directory that has a mounted-on filesystem. 4264 */ 4265 if (vn_ismntpt(vp)) { 4266 error = EACCES; 4267 } else { 4268 /* 4269 * System V defines rmdir to return EEXIST, 4270 * not ENOTEMPTY, if the directory is not 4271 * empty. A System V NFS server needs to map 4272 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4273 * transmit over the wire. 4274 */ 4275 if ((error = VOP_RMDIR(dvp, name, rootdir, cs->cr, 4276 NULL, 0)) == EEXIST) 4277 error = ENOTEMPTY; 4278 } 4279 } else { 4280 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4281 fp != NULL) { 4282 struct vattr va; 4283 vnode_t *tvp; 4284 4285 rfs4_dbe_lock(fp->rf_dbe); 4286 tvp = fp->rf_vp; 4287 if (tvp) 4288 VN_HOLD(tvp); 4289 rfs4_dbe_unlock(fp->rf_dbe); 4290 4291 if (tvp) { 4292 /* 4293 * This is va_seq safe because we are not 4294 * manipulating dvp. 4295 */ 4296 va.va_mask = AT_NLINK; 4297 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4298 va.va_nlink == 0) { 4299 /* Remove state on file remove */ 4300 if (in_crit) { 4301 nbl_end_crit(vp); 4302 in_crit = 0; 4303 } 4304 rfs4_close_all_state(fp); 4305 } 4306 VN_RELE(tvp); 4307 } 4308 } 4309 } 4310 4311 if (in_crit) 4312 nbl_end_crit(vp); 4313 VN_RELE(vp); 4314 4315 if (fp) { 4316 rfs4_clear_dont_grant(fp); 4317 rfs4_file_rele(fp); 4318 } 4319 if (nm != name) 4320 kmem_free(name, MAXPATHLEN + 1); 4321 kmem_free(nm, len); 4322 4323 if (error) { 4324 *cs->statusp = resp->status = puterrno4(error); 4325 goto out; 4326 } 4327 4328 /* 4329 * Get the initial "after" sequence number, if it fails, set to zero 4330 */ 4331 idva.va_mask = AT_SEQ; 4332 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4333 idva.va_seq = 0; 4334 4335 /* 4336 * Force modified data and metadata out to stable storage. 4337 */ 4338 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4339 4340 /* 4341 * Get "after" change value, if it fails, simply return the 4342 * before value. 4343 */ 4344 adva.va_mask = AT_CTIME|AT_SEQ; 4345 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4346 adva.va_ctime = bdva.va_ctime; 4347 adva.va_seq = 0; 4348 } 4349 4350 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4351 4352 /* 4353 * The cinfo.atomic = TRUE only if we have 4354 * non-zero va_seq's, and it has incremented by exactly one 4355 * during the VOP_REMOVE/RMDIR and it didn't change during 4356 * the VOP_FSYNC. 4357 */ 4358 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4359 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4360 resp->cinfo.atomic = TRUE; 4361 else 4362 resp->cinfo.atomic = FALSE; 4363 4364 *cs->statusp = resp->status = NFS4_OK; 4365 4366 out: 4367 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4368 REMOVE4res *, resp); 4369 } 4370 4371 /* 4372 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4373 * oldname and newname. 4374 * res: status. If success - CURRENT_FH unchanged, return change_info 4375 * for both from and target directories. 4376 */ 4377 /* ARGSUSED */ 4378 static void 4379 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4380 struct compound_state *cs) 4381 { 4382 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4383 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4384 int error; 4385 vnode_t *odvp; 4386 vnode_t *ndvp; 4387 vnode_t *srcvp, *targvp; 4388 struct vattr obdva, oidva, oadva; 4389 struct vattr nbdva, nidva, nadva; 4390 char *onm, *nnm; 4391 uint_t olen, nlen; 4392 rfs4_file_t *fp, *sfp; 4393 int in_crit_src, in_crit_targ; 4394 int fp_rele_grant_hold, sfp_rele_grant_hold; 4395 bslabel_t *clabel; 4396 struct sockaddr *ca; 4397 char *converted_onm = NULL; 4398 char *converted_nnm = NULL; 4399 4400 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4401 RENAME4args *, args); 4402 4403 fp = sfp = NULL; 4404 srcvp = targvp = NULL; 4405 in_crit_src = in_crit_targ = 0; 4406 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4407 4408 /* CURRENT_FH: target directory */ 4409 ndvp = cs->vp; 4410 if (ndvp == NULL) { 4411 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4412 goto out; 4413 } 4414 4415 /* SAVED_FH: from directory */ 4416 odvp = cs->saved_vp; 4417 if (odvp == NULL) { 4418 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4419 goto out; 4420 } 4421 4422 if (cs->access == CS_ACCESS_DENIED) { 4423 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4424 goto out; 4425 } 4426 4427 /* 4428 * If there is an unshared filesystem mounted on this vnode, 4429 * do not allow to rename objects in this directory. 4430 */ 4431 if (vn_ismntpt(odvp)) { 4432 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4433 goto out; 4434 } 4435 4436 /* 4437 * If there is an unshared filesystem mounted on this vnode, 4438 * do not allow to rename to this directory. 4439 */ 4440 if (vn_ismntpt(ndvp)) { 4441 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4442 goto out; 4443 } 4444 4445 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4446 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4447 goto out; 4448 } 4449 4450 if (cs->saved_exi != cs->exi) { 4451 *cs->statusp = resp->status = NFS4ERR_XDEV; 4452 goto out; 4453 } 4454 4455 if (!utf8_dir_verify(&args->oldname)) { 4456 *cs->statusp = resp->status = NFS4ERR_INVAL; 4457 goto out; 4458 } 4459 4460 if (!utf8_dir_verify(&args->newname)) { 4461 *cs->statusp = resp->status = NFS4ERR_INVAL; 4462 goto out; 4463 } 4464 4465 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4466 if (onm == NULL) { 4467 *cs->statusp = resp->status = NFS4ERR_INVAL; 4468 goto out; 4469 } 4470 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4471 nlen = MAXPATHLEN + 1; 4472 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4473 nlen); 4474 4475 if (converted_onm == NULL) { 4476 *cs->statusp = resp->status = NFS4ERR_INVAL; 4477 kmem_free(onm, olen); 4478 goto out; 4479 } 4480 4481 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4482 if (nnm == NULL) { 4483 *cs->statusp = resp->status = NFS4ERR_INVAL; 4484 if (onm != converted_onm) 4485 kmem_free(converted_onm, MAXPATHLEN + 1); 4486 kmem_free(onm, olen); 4487 goto out; 4488 } 4489 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4490 MAXPATHLEN + 1); 4491 4492 if (converted_nnm == NULL) { 4493 *cs->statusp = resp->status = NFS4ERR_INVAL; 4494 kmem_free(nnm, nlen); 4495 nnm = NULL; 4496 if (onm != converted_onm) 4497 kmem_free(converted_onm, MAXPATHLEN + 1); 4498 kmem_free(onm, olen); 4499 goto out; 4500 } 4501 4502 4503 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4504 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4505 kmem_free(onm, olen); 4506 kmem_free(nnm, nlen); 4507 goto out; 4508 } 4509 4510 4511 if (rdonly4(cs->exi, cs->vp, req)) { 4512 *cs->statusp = resp->status = NFS4ERR_ROFS; 4513 if (onm != converted_onm) 4514 kmem_free(converted_onm, MAXPATHLEN + 1); 4515 kmem_free(onm, olen); 4516 if (nnm != converted_nnm) 4517 kmem_free(converted_nnm, MAXPATHLEN + 1); 4518 kmem_free(nnm, nlen); 4519 goto out; 4520 } 4521 4522 /* check label of the target dir */ 4523 if (is_system_labeled()) { 4524 ASSERT(req->rq_label != NULL); 4525 clabel = req->rq_label; 4526 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4527 "got client label from request(1)", 4528 struct svc_req *, req); 4529 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4530 if (!do_rfs_label_check(clabel, ndvp, 4531 EQUALITY_CHECK, cs->exi)) { 4532 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4533 goto err_out; 4534 } 4535 } 4536 } 4537 4538 /* 4539 * Is the source a file and have a delegation? 4540 * We don't need to acquire va_seq before these lookups, if 4541 * it causes an update, cinfo.before will not match, which will 4542 * trigger a cache flush even if atomic is TRUE. 4543 */ 4544 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4545 &error, cs->cr)) { 4546 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4547 NULL)) { 4548 *cs->statusp = resp->status = NFS4ERR_DELAY; 4549 goto err_out; 4550 } 4551 } 4552 4553 if (srcvp == NULL) { 4554 *cs->statusp = resp->status = puterrno4(error); 4555 if (onm != converted_onm) 4556 kmem_free(converted_onm, MAXPATHLEN + 1); 4557 kmem_free(onm, olen); 4558 if (nnm != converted_nnm) 4559 kmem_free(converted_onm, MAXPATHLEN + 1); 4560 kmem_free(nnm, nlen); 4561 goto out; 4562 } 4563 4564 sfp_rele_grant_hold = 1; 4565 4566 /* Does the destination exist and a file and have a delegation? */ 4567 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4568 NULL, cs->cr)) { 4569 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4570 NULL)) { 4571 *cs->statusp = resp->status = NFS4ERR_DELAY; 4572 goto err_out; 4573 } 4574 } 4575 fp_rele_grant_hold = 1; 4576 4577 4578 /* Check for NBMAND lock on both source and target */ 4579 if (nbl_need_check(srcvp)) { 4580 nbl_start_crit(srcvp, RW_READER); 4581 in_crit_src = 1; 4582 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4583 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4584 goto err_out; 4585 } 4586 } 4587 4588 if (targvp && nbl_need_check(targvp)) { 4589 nbl_start_crit(targvp, RW_READER); 4590 in_crit_targ = 1; 4591 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4592 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4593 goto err_out; 4594 } 4595 } 4596 4597 /* Get source "before" change value */ 4598 obdva.va_mask = AT_CTIME|AT_SEQ; 4599 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4600 if (!error) { 4601 nbdva.va_mask = AT_CTIME|AT_SEQ; 4602 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4603 } 4604 if (error) { 4605 *cs->statusp = resp->status = puterrno4(error); 4606 goto err_out; 4607 } 4608 4609 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4610 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4611 4612 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4613 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4614 struct vattr va; 4615 vnode_t *tvp; 4616 4617 rfs4_dbe_lock(fp->rf_dbe); 4618 tvp = fp->rf_vp; 4619 if (tvp) 4620 VN_HOLD(tvp); 4621 rfs4_dbe_unlock(fp->rf_dbe); 4622 4623 if (tvp) { 4624 va.va_mask = AT_NLINK; 4625 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4626 va.va_nlink == 0) { 4627 /* The file is gone and so should the state */ 4628 if (in_crit_targ) { 4629 nbl_end_crit(targvp); 4630 in_crit_targ = 0; 4631 } 4632 rfs4_close_all_state(fp); 4633 } 4634 VN_RELE(tvp); 4635 } 4636 } 4637 if (error == 0) 4638 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4639 4640 if (in_crit_src) 4641 nbl_end_crit(srcvp); 4642 if (srcvp) 4643 VN_RELE(srcvp); 4644 if (in_crit_targ) 4645 nbl_end_crit(targvp); 4646 if (targvp) 4647 VN_RELE(targvp); 4648 4649 if (sfp) { 4650 rfs4_clear_dont_grant(sfp); 4651 rfs4_file_rele(sfp); 4652 } 4653 if (fp) { 4654 rfs4_clear_dont_grant(fp); 4655 rfs4_file_rele(fp); 4656 } 4657 4658 if (converted_onm != onm) 4659 kmem_free(converted_onm, MAXPATHLEN + 1); 4660 kmem_free(onm, olen); 4661 if (converted_nnm != nnm) 4662 kmem_free(converted_nnm, MAXPATHLEN + 1); 4663 kmem_free(nnm, nlen); 4664 4665 /* 4666 * Get the initial "after" sequence number, if it fails, set to zero 4667 */ 4668 oidva.va_mask = AT_SEQ; 4669 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4670 oidva.va_seq = 0; 4671 4672 nidva.va_mask = AT_SEQ; 4673 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4674 nidva.va_seq = 0; 4675 4676 /* 4677 * Force modified data and metadata out to stable storage. 4678 */ 4679 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4680 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4681 4682 if (error) { 4683 *cs->statusp = resp->status = puterrno4(error); 4684 goto out; 4685 } 4686 4687 /* 4688 * Get "after" change values, if it fails, simply return the 4689 * before value. 4690 */ 4691 oadva.va_mask = AT_CTIME|AT_SEQ; 4692 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4693 oadva.va_ctime = obdva.va_ctime; 4694 oadva.va_seq = 0; 4695 } 4696 4697 nadva.va_mask = AT_CTIME|AT_SEQ; 4698 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4699 nadva.va_ctime = nbdva.va_ctime; 4700 nadva.va_seq = 0; 4701 } 4702 4703 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4704 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4705 4706 /* 4707 * The cinfo.atomic = TRUE only if we have 4708 * non-zero va_seq's, and it has incremented by exactly one 4709 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4710 */ 4711 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4712 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4713 resp->source_cinfo.atomic = TRUE; 4714 else 4715 resp->source_cinfo.atomic = FALSE; 4716 4717 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4718 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4719 resp->target_cinfo.atomic = TRUE; 4720 else 4721 resp->target_cinfo.atomic = FALSE; 4722 4723 #ifdef VOLATILE_FH_TEST 4724 { 4725 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4726 4727 /* 4728 * Add the renamed file handle to the volatile rename list 4729 */ 4730 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4731 /* file handles may expire on rename */ 4732 vnode_t *vp; 4733 4734 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4735 /* 4736 * Already know that nnm will be a valid string 4737 */ 4738 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4739 NULL, NULL, NULL); 4740 kmem_free(nnm, nlen); 4741 if (!error) { 4742 add_volrnm_fh(cs->exi, vp); 4743 VN_RELE(vp); 4744 } 4745 } 4746 } 4747 #endif /* VOLATILE_FH_TEST */ 4748 4749 *cs->statusp = resp->status = NFS4_OK; 4750 out: 4751 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4752 RENAME4res *, resp); 4753 return; 4754 4755 err_out: 4756 if (onm != converted_onm) 4757 kmem_free(converted_onm, MAXPATHLEN + 1); 4758 if (onm != NULL) 4759 kmem_free(onm, olen); 4760 if (nnm != converted_nnm) 4761 kmem_free(converted_nnm, MAXPATHLEN + 1); 4762 if (nnm != NULL) 4763 kmem_free(nnm, nlen); 4764 4765 if (in_crit_src) nbl_end_crit(srcvp); 4766 if (in_crit_targ) nbl_end_crit(targvp); 4767 if (targvp) VN_RELE(targvp); 4768 if (srcvp) VN_RELE(srcvp); 4769 if (sfp) { 4770 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4771 rfs4_file_rele(sfp); 4772 } 4773 if (fp) { 4774 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4775 rfs4_file_rele(fp); 4776 } 4777 4778 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4779 RENAME4res *, resp); 4780 } 4781 4782 /* ARGSUSED */ 4783 static void 4784 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4785 struct compound_state *cs) 4786 { 4787 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4788 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4789 rfs4_client_t *cp; 4790 4791 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4792 RENEW4args *, args); 4793 4794 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4795 *cs->statusp = resp->status = 4796 rfs4_check_clientid(&args->clientid, 0); 4797 goto out; 4798 } 4799 4800 if (rfs4_lease_expired(cp)) { 4801 rfs4_client_rele(cp); 4802 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4803 goto out; 4804 } 4805 4806 rfs4_update_lease(cp); 4807 4808 mutex_enter(cp->rc_cbinfo.cb_lock); 4809 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 4810 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 4811 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4812 } else { 4813 *cs->statusp = resp->status = NFS4_OK; 4814 } 4815 mutex_exit(cp->rc_cbinfo.cb_lock); 4816 4817 rfs4_client_rele(cp); 4818 4819 out: 4820 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4821 RENEW4res *, resp); 4822 } 4823 4824 /* ARGSUSED */ 4825 static void 4826 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4827 struct compound_state *cs) 4828 { 4829 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4830 4831 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4832 4833 /* No need to check cs->access - we are not accessing any object */ 4834 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4835 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4836 goto out; 4837 } 4838 if (cs->vp != NULL) { 4839 VN_RELE(cs->vp); 4840 } 4841 cs->vp = cs->saved_vp; 4842 cs->saved_vp = NULL; 4843 cs->exi = cs->saved_exi; 4844 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4845 *cs->statusp = resp->status = NFS4_OK; 4846 cs->deleg = FALSE; 4847 4848 out: 4849 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4850 RESTOREFH4res *, resp); 4851 } 4852 4853 /* ARGSUSED */ 4854 static void 4855 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4856 struct compound_state *cs) 4857 { 4858 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4859 4860 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4861 4862 /* No need to check cs->access - we are not accessing any object */ 4863 if (cs->vp == NULL) { 4864 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4865 goto out; 4866 } 4867 if (cs->saved_vp != NULL) { 4868 VN_RELE(cs->saved_vp); 4869 } 4870 cs->saved_vp = cs->vp; 4871 VN_HOLD(cs->saved_vp); 4872 cs->saved_exi = cs->exi; 4873 /* 4874 * since SAVEFH is fairly rare, don't alloc space for its fh 4875 * unless necessary. 4876 */ 4877 if (cs->saved_fh.nfs_fh4_val == NULL) { 4878 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4879 } 4880 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4881 *cs->statusp = resp->status = NFS4_OK; 4882 4883 out: 4884 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4885 SAVEFH4res *, resp); 4886 } 4887 4888 /* 4889 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4890 * return the bitmap of attrs that were set successfully. It is also 4891 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4892 * always be called only after rfs4_do_set_attrs(). 4893 * 4894 * Verify that the attributes are same as the expected ones. sargp->vap 4895 * and sargp->sbp contain the input attributes as translated from fattr4. 4896 * 4897 * This function verifies only the attrs that correspond to a vattr or 4898 * vfsstat struct. That is because of the extra step needed to get the 4899 * corresponding system structs. Other attributes have already been set or 4900 * verified by do_rfs4_set_attrs. 4901 * 4902 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4903 */ 4904 static int 4905 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4906 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4907 { 4908 int error, ret_error = 0; 4909 int i, k; 4910 uint_t sva_mask = sargp->vap->va_mask; 4911 uint_t vbit; 4912 union nfs4_attr_u *na; 4913 uint8_t *amap; 4914 bool_t getsb = ntovp->vfsstat; 4915 4916 if (sva_mask != 0) { 4917 /* 4918 * Okay to overwrite sargp->vap because we verify based 4919 * on the incoming values. 4920 */ 4921 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4922 sargp->cs->cr, NULL); 4923 if (ret_error) { 4924 if (resp == NULL) 4925 return (ret_error); 4926 /* 4927 * Must return bitmap of successful attrs 4928 */ 4929 sva_mask = 0; /* to prevent checking vap later */ 4930 } else { 4931 /* 4932 * Some file systems clobber va_mask. it is probably 4933 * wrong of them to do so, nonethless we practice 4934 * defensive coding. 4935 * See bug id 4276830. 4936 */ 4937 sargp->vap->va_mask = sva_mask; 4938 } 4939 } 4940 4941 if (getsb) { 4942 /* 4943 * Now get the superblock and loop on the bitmap, as there is 4944 * no simple way of translating from superblock to bitmap4. 4945 */ 4946 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4947 if (ret_error) { 4948 if (resp == NULL) 4949 goto errout; 4950 getsb = FALSE; 4951 } 4952 } 4953 4954 /* 4955 * Now loop and verify each attribute which getattr returned 4956 * whether it's the same as the input. 4957 */ 4958 if (resp == NULL && !getsb && (sva_mask == 0)) 4959 goto errout; 4960 4961 na = ntovp->na; 4962 amap = ntovp->amap; 4963 k = 0; 4964 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4965 k = *amap; 4966 ASSERT(nfs4_ntov_map[k].nval == k); 4967 vbit = nfs4_ntov_map[k].vbit; 4968 4969 /* 4970 * If vattr attribute but VOP_GETATTR failed, or it's 4971 * superblock attribute but VFS_STATVFS failed, skip 4972 */ 4973 if (vbit) { 4974 if ((vbit & sva_mask) == 0) 4975 continue; 4976 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4977 continue; 4978 } 4979 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4980 if (resp != NULL) { 4981 if (error) 4982 ret_error = -1; /* not all match */ 4983 else /* update response bitmap */ 4984 *resp |= nfs4_ntov_map[k].fbit; 4985 continue; 4986 } 4987 if (error) { 4988 ret_error = -1; /* not all match */ 4989 break; 4990 } 4991 } 4992 errout: 4993 return (ret_error); 4994 } 4995 4996 /* 4997 * Decode the attribute to be set/verified. If the attr requires a sys op 4998 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4999 * call the sv_getit function for it, because the sys op hasn't yet been done. 5000 * Return 0 for success, error code if failed. 5001 * 5002 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 5003 */ 5004 static int 5005 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 5006 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 5007 { 5008 int error = 0; 5009 bool_t set_later; 5010 5011 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 5012 5013 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 5014 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 5015 /* 5016 * don't verify yet if a vattr or sb dependent attr, 5017 * because we don't have their sys values yet. 5018 * Will be done later. 5019 */ 5020 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 5021 /* 5022 * ACLs are a special case, since setting the MODE 5023 * conflicts with setting the ACL. We delay setting 5024 * the ACL until all other attributes have been set. 5025 * The ACL gets set in do_rfs4_op_setattr(). 5026 */ 5027 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5028 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5029 sargp, nap); 5030 if (error) { 5031 xdr_free(nfs4_ntov_map[k].xfunc, 5032 (caddr_t)nap); 5033 } 5034 } 5035 } 5036 } else { 5037 #ifdef DEBUG 5038 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5039 "decoding attribute %d\n", k); 5040 #endif 5041 error = EINVAL; 5042 } 5043 if (!error && resp_bval && !set_later) { 5044 *resp_bval |= nfs4_ntov_map[k].fbit; 5045 } 5046 5047 return (error); 5048 } 5049 5050 /* 5051 * Set vattr based on incoming fattr4 attrs - used by setattr. 5052 * Set response mask. Ignore any values that are not writable vattr attrs. 5053 */ 5054 static nfsstat4 5055 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5056 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5057 nfs4_attr_cmd_t cmd) 5058 { 5059 int error = 0; 5060 int i; 5061 char *attrs = fattrp->attrlist4; 5062 uint32_t attrslen = fattrp->attrlist4_len; 5063 XDR xdr; 5064 nfsstat4 status = NFS4_OK; 5065 vnode_t *vp = cs->vp; 5066 union nfs4_attr_u *na; 5067 uint8_t *amap; 5068 5069 #ifndef lint 5070 /* 5071 * Make sure that maximum attribute number can be expressed as an 5072 * 8 bit quantity. 5073 */ 5074 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5075 #endif 5076 5077 if (vp == NULL) { 5078 if (resp) 5079 *resp = 0; 5080 return (NFS4ERR_NOFILEHANDLE); 5081 } 5082 if (cs->access == CS_ACCESS_DENIED) { 5083 if (resp) 5084 *resp = 0; 5085 return (NFS4ERR_ACCESS); 5086 } 5087 5088 sargp->op = cmd; 5089 sargp->cs = cs; 5090 sargp->flag = 0; /* may be set later */ 5091 sargp->vap->va_mask = 0; 5092 sargp->rdattr_error = NFS4_OK; 5093 sargp->rdattr_error_req = FALSE; 5094 /* sargp->sbp is set by the caller */ 5095 5096 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5097 5098 na = ntovp->na; 5099 amap = ntovp->amap; 5100 5101 /* 5102 * The following loop iterates on the nfs4_ntov_map checking 5103 * if the fbit is set in the requested bitmap. 5104 * If set then we process the arguments using the 5105 * rfs4_fattr4 conversion functions to populate the setattr 5106 * vattr and va_mask. Any settable attrs that are not using vattr 5107 * will be set in this loop. 5108 */ 5109 for (i = 0; i < nfs4_ntov_map_size; i++) { 5110 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5111 continue; 5112 } 5113 /* 5114 * If setattr, must be a writable attr. 5115 * If verify/nverify, must be a readable attr. 5116 */ 5117 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5118 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5119 /* 5120 * Client tries to set/verify an 5121 * unsupported attribute, tries to set 5122 * a read only attr or verify a write 5123 * only one - error! 5124 */ 5125 break; 5126 } 5127 /* 5128 * Decode the attribute to set/verify 5129 */ 5130 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5131 &xdr, resp ? resp : NULL, na); 5132 if (error) 5133 break; 5134 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5135 na++; 5136 (ntovp->attrcnt)++; 5137 if (nfs4_ntov_map[i].vfsstat) 5138 ntovp->vfsstat = TRUE; 5139 } 5140 5141 if (error != 0) 5142 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5143 puterrno4(error)); 5144 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5145 return (status); 5146 } 5147 5148 static nfsstat4 5149 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5150 stateid4 *stateid) 5151 { 5152 int error = 0; 5153 struct nfs4_svgetit_arg sarg; 5154 bool_t trunc; 5155 5156 nfsstat4 status = NFS4_OK; 5157 cred_t *cr = cs->cr; 5158 vnode_t *vp = cs->vp; 5159 struct nfs4_ntov_table ntov; 5160 struct statvfs64 sb; 5161 struct vattr bva; 5162 struct flock64 bf; 5163 int in_crit = 0; 5164 uint_t saved_mask = 0; 5165 caller_context_t ct; 5166 5167 *resp = 0; 5168 sarg.sbp = &sb; 5169 sarg.is_referral = B_FALSE; 5170 nfs4_ntov_table_init(&ntov); 5171 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5172 NFS4ATTR_SETIT); 5173 if (status != NFS4_OK) { 5174 /* 5175 * failed set attrs 5176 */ 5177 goto done; 5178 } 5179 if ((sarg.vap->va_mask == 0) && 5180 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5181 /* 5182 * no further work to be done 5183 */ 5184 goto done; 5185 } 5186 5187 /* 5188 * If we got a request to set the ACL and the MODE, only 5189 * allow changing VSUID, VSGID, and VSVTX. Attempting 5190 * to change any other bits, along with setting an ACL, 5191 * gives NFS4ERR_INVAL. 5192 */ 5193 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5194 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5195 vattr_t va; 5196 5197 va.va_mask = AT_MODE; 5198 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5199 if (error) { 5200 status = puterrno4(error); 5201 goto done; 5202 } 5203 if ((sarg.vap->va_mode ^ va.va_mode) & 5204 ~(VSUID | VSGID | VSVTX)) { 5205 status = NFS4ERR_INVAL; 5206 goto done; 5207 } 5208 } 5209 5210 /* Check stateid only if size has been set */ 5211 if (sarg.vap->va_mask & AT_SIZE) { 5212 trunc = (sarg.vap->va_size == 0); 5213 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5214 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5215 if (status != NFS4_OK) 5216 goto done; 5217 } else { 5218 ct.cc_sysid = 0; 5219 ct.cc_pid = 0; 5220 ct.cc_caller_id = nfs4_srv_caller_id; 5221 ct.cc_flags = CC_DONTBLOCK; 5222 } 5223 5224 /* XXX start of possible race with delegations */ 5225 5226 /* 5227 * We need to specially handle size changes because it is 5228 * possible for the client to create a file with read-only 5229 * modes, but with the file opened for writing. If the client 5230 * then tries to set the file size, e.g. ftruncate(3C), 5231 * fcntl(F_FREESP), the normal access checking done in 5232 * VOP_SETATTR would prevent the client from doing it even though 5233 * it should be allowed to do so. To get around this, we do the 5234 * access checking for ourselves and use VOP_SPACE which doesn't 5235 * do the access checking. 5236 * Also the client should not be allowed to change the file 5237 * size if there is a conflicting non-blocking mandatory lock in 5238 * the region of the change. 5239 */ 5240 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5241 u_offset_t offset; 5242 ssize_t length; 5243 5244 /* 5245 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5246 * before returning, sarg.vap->va_mask is used to 5247 * generate the setattr reply bitmap. We also clear 5248 * AT_SIZE below before calling VOP_SPACE. For both 5249 * of these cases, the va_mask needs to be saved here 5250 * and restored after calling VOP_SETATTR. 5251 */ 5252 saved_mask = sarg.vap->va_mask; 5253 5254 /* 5255 * Check any possible conflict due to NBMAND locks. 5256 * Get into critical region before VOP_GETATTR, so the 5257 * size attribute is valid when checking conflicts. 5258 */ 5259 if (nbl_need_check(vp)) { 5260 nbl_start_crit(vp, RW_READER); 5261 in_crit = 1; 5262 } 5263 5264 bva.va_mask = AT_UID|AT_SIZE; 5265 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5266 status = puterrno4(error); 5267 goto done; 5268 } 5269 5270 if (in_crit) { 5271 if (sarg.vap->va_size < bva.va_size) { 5272 offset = sarg.vap->va_size; 5273 length = bva.va_size - sarg.vap->va_size; 5274 } else { 5275 offset = bva.va_size; 5276 length = sarg.vap->va_size - bva.va_size; 5277 } 5278 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5279 &ct)) { 5280 status = NFS4ERR_LOCKED; 5281 goto done; 5282 } 5283 } 5284 5285 if (crgetuid(cr) == bva.va_uid) { 5286 sarg.vap->va_mask &= ~AT_SIZE; 5287 bf.l_type = F_WRLCK; 5288 bf.l_whence = 0; 5289 bf.l_start = (off64_t)sarg.vap->va_size; 5290 bf.l_len = 0; 5291 bf.l_sysid = 0; 5292 bf.l_pid = 0; 5293 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5294 (offset_t)sarg.vap->va_size, cr, &ct); 5295 } 5296 } 5297 5298 if (!error && sarg.vap->va_mask != 0) 5299 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5300 5301 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5302 if (saved_mask & AT_SIZE) 5303 sarg.vap->va_mask |= AT_SIZE; 5304 5305 /* 5306 * If an ACL was being set, it has been delayed until now, 5307 * in order to set the mode (via the VOP_SETATTR() above) first. 5308 */ 5309 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5310 int i; 5311 5312 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5313 if (ntov.amap[i] == FATTR4_ACL) 5314 break; 5315 if (i < NFS4_MAXNUM_ATTRS) { 5316 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5317 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5318 if (error == 0) { 5319 *resp |= FATTR4_ACL_MASK; 5320 } else if (error == ENOTSUP) { 5321 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5322 status = NFS4ERR_ATTRNOTSUPP; 5323 goto done; 5324 } 5325 } else { 5326 NFS4_DEBUG(rfs4_debug, 5327 (CE_NOTE, "do_rfs4_op_setattr: " 5328 "unable to find ACL in fattr4")); 5329 error = EINVAL; 5330 } 5331 } 5332 5333 if (error) { 5334 /* check if a monitor detected a delegation conflict */ 5335 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5336 status = NFS4ERR_DELAY; 5337 else 5338 status = puterrno4(error); 5339 5340 /* 5341 * Set the response bitmap when setattr failed. 5342 * If VOP_SETATTR partially succeeded, test by doing a 5343 * VOP_GETATTR on the object and comparing the data 5344 * to the setattr arguments. 5345 */ 5346 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5347 } else { 5348 /* 5349 * Force modified metadata out to stable storage. 5350 */ 5351 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5352 /* 5353 * Set response bitmap 5354 */ 5355 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5356 } 5357 5358 /* Return early and already have a NFSv4 error */ 5359 done: 5360 /* 5361 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5362 * conversion sets both readable and writeable NFS4 attrs 5363 * for AT_MTIME and AT_ATIME. The line below masks out 5364 * unrequested attrs from the setattr result bitmap. This 5365 * is placed after the done: label to catch the ATTRNOTSUP 5366 * case. 5367 */ 5368 *resp &= fattrp->attrmask; 5369 5370 if (in_crit) 5371 nbl_end_crit(vp); 5372 5373 nfs4_ntov_table_free(&ntov, &sarg); 5374 5375 return (status); 5376 } 5377 5378 /* ARGSUSED */ 5379 static void 5380 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5381 struct compound_state *cs) 5382 { 5383 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5384 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5385 bslabel_t *clabel; 5386 5387 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5388 SETATTR4args *, args); 5389 5390 if (cs->vp == NULL) { 5391 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5392 goto out; 5393 } 5394 5395 /* 5396 * If there is an unshared filesystem mounted on this vnode, 5397 * do not allow to setattr on this vnode. 5398 */ 5399 if (vn_ismntpt(cs->vp)) { 5400 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5401 goto out; 5402 } 5403 5404 resp->attrsset = 0; 5405 5406 if (rdonly4(cs->exi, cs->vp, req)) { 5407 *cs->statusp = resp->status = NFS4ERR_ROFS; 5408 goto out; 5409 } 5410 5411 /* check label before setting attributes */ 5412 if (is_system_labeled()) { 5413 ASSERT(req->rq_label != NULL); 5414 clabel = req->rq_label; 5415 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5416 "got client label from request(1)", 5417 struct svc_req *, req); 5418 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5419 if (!do_rfs_label_check(clabel, cs->vp, 5420 EQUALITY_CHECK, cs->exi)) { 5421 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5422 goto out; 5423 } 5424 } 5425 } 5426 5427 *cs->statusp = resp->status = 5428 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5429 &args->stateid); 5430 5431 out: 5432 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5433 SETATTR4res *, resp); 5434 } 5435 5436 /* ARGSUSED */ 5437 static void 5438 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5439 struct compound_state *cs) 5440 { 5441 /* 5442 * verify and nverify are exactly the same, except that nverify 5443 * succeeds when some argument changed, and verify succeeds when 5444 * when none changed. 5445 */ 5446 5447 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5448 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5449 5450 int error; 5451 struct nfs4_svgetit_arg sarg; 5452 struct statvfs64 sb; 5453 struct nfs4_ntov_table ntov; 5454 5455 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5456 VERIFY4args *, args); 5457 5458 if (cs->vp == NULL) { 5459 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5460 goto out; 5461 } 5462 5463 sarg.sbp = &sb; 5464 sarg.is_referral = B_FALSE; 5465 nfs4_ntov_table_init(&ntov); 5466 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5467 &sarg, &ntov, NFS4ATTR_VERIT); 5468 if (resp->status != NFS4_OK) { 5469 /* 5470 * do_rfs4_set_attrs will try to verify systemwide attrs, 5471 * so could return -1 for "no match". 5472 */ 5473 if (resp->status == -1) 5474 resp->status = NFS4ERR_NOT_SAME; 5475 goto done; 5476 } 5477 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5478 switch (error) { 5479 case 0: 5480 resp->status = NFS4_OK; 5481 break; 5482 case -1: 5483 resp->status = NFS4ERR_NOT_SAME; 5484 break; 5485 default: 5486 resp->status = puterrno4(error); 5487 break; 5488 } 5489 done: 5490 *cs->statusp = resp->status; 5491 nfs4_ntov_table_free(&ntov, &sarg); 5492 out: 5493 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5494 VERIFY4res *, resp); 5495 } 5496 5497 /* ARGSUSED */ 5498 static void 5499 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5500 struct compound_state *cs) 5501 { 5502 /* 5503 * verify and nverify are exactly the same, except that nverify 5504 * succeeds when some argument changed, and verify succeeds when 5505 * when none changed. 5506 */ 5507 5508 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5509 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5510 5511 int error; 5512 struct nfs4_svgetit_arg sarg; 5513 struct statvfs64 sb; 5514 struct nfs4_ntov_table ntov; 5515 5516 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5517 NVERIFY4args *, args); 5518 5519 if (cs->vp == NULL) { 5520 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5521 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5522 NVERIFY4res *, resp); 5523 return; 5524 } 5525 sarg.sbp = &sb; 5526 sarg.is_referral = B_FALSE; 5527 nfs4_ntov_table_init(&ntov); 5528 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5529 &sarg, &ntov, NFS4ATTR_VERIT); 5530 if (resp->status != NFS4_OK) { 5531 /* 5532 * do_rfs4_set_attrs will try to verify systemwide attrs, 5533 * so could return -1 for "no match". 5534 */ 5535 if (resp->status == -1) 5536 resp->status = NFS4_OK; 5537 goto done; 5538 } 5539 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5540 switch (error) { 5541 case 0: 5542 resp->status = NFS4ERR_SAME; 5543 break; 5544 case -1: 5545 resp->status = NFS4_OK; 5546 break; 5547 default: 5548 resp->status = puterrno4(error); 5549 break; 5550 } 5551 done: 5552 *cs->statusp = resp->status; 5553 nfs4_ntov_table_free(&ntov, &sarg); 5554 5555 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5556 NVERIFY4res *, resp); 5557 } 5558 5559 /* 5560 * XXX - This should live in an NFS header file. 5561 */ 5562 #define MAX_IOVECS 12 5563 5564 /* ARGSUSED */ 5565 static void 5566 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5567 struct compound_state *cs) 5568 { 5569 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5570 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5571 int error; 5572 vnode_t *vp; 5573 struct vattr bva; 5574 u_offset_t rlimit; 5575 struct uio uio; 5576 struct iovec iov[MAX_IOVECS]; 5577 struct iovec *iovp; 5578 int iovcnt; 5579 int ioflag; 5580 cred_t *savecred, *cr; 5581 bool_t *deleg = &cs->deleg; 5582 nfsstat4 stat; 5583 int in_crit = 0; 5584 caller_context_t ct; 5585 5586 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5587 WRITE4args *, args); 5588 5589 vp = cs->vp; 5590 if (vp == NULL) { 5591 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5592 goto out; 5593 } 5594 if (cs->access == CS_ACCESS_DENIED) { 5595 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5596 goto out; 5597 } 5598 5599 cr = cs->cr; 5600 5601 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5602 deleg, TRUE, &ct)) != NFS4_OK) { 5603 *cs->statusp = resp->status = stat; 5604 goto out; 5605 } 5606 5607 /* 5608 * We have to enter the critical region before calling VOP_RWLOCK 5609 * to avoid a deadlock with ufs. 5610 */ 5611 if (nbl_need_check(vp)) { 5612 nbl_start_crit(vp, RW_READER); 5613 in_crit = 1; 5614 if (nbl_conflict(vp, NBL_WRITE, 5615 args->offset, args->data_len, 0, &ct)) { 5616 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5617 goto out; 5618 } 5619 } 5620 5621 bva.va_mask = AT_MODE | AT_UID; 5622 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5623 5624 /* 5625 * If we can't get the attributes, then we can't do the 5626 * right access checking. So, we'll fail the request. 5627 */ 5628 if (error) { 5629 *cs->statusp = resp->status = puterrno4(error); 5630 goto out; 5631 } 5632 5633 if (rdonly4(cs->exi, cs->vp, req)) { 5634 *cs->statusp = resp->status = NFS4ERR_ROFS; 5635 goto out; 5636 } 5637 5638 if (vp->v_type != VREG) { 5639 *cs->statusp = resp->status = 5640 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5641 goto out; 5642 } 5643 5644 if (crgetuid(cr) != bva.va_uid && 5645 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5646 *cs->statusp = resp->status = puterrno4(error); 5647 goto out; 5648 } 5649 5650 if (MANDLOCK(vp, bva.va_mode)) { 5651 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5652 goto out; 5653 } 5654 5655 if (args->data_len == 0) { 5656 *cs->statusp = resp->status = NFS4_OK; 5657 resp->count = 0; 5658 resp->committed = args->stable; 5659 resp->writeverf = Write4verf; 5660 goto out; 5661 } 5662 5663 if (args->mblk != NULL) { 5664 mblk_t *m; 5665 uint_t bytes, round_len; 5666 5667 iovcnt = 0; 5668 bytes = 0; 5669 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5670 for (m = args->mblk; 5671 m != NULL && bytes < round_len; 5672 m = m->b_cont) { 5673 iovcnt++; 5674 bytes += MBLKL(m); 5675 } 5676 #ifdef DEBUG 5677 /* should have ended on an mblk boundary */ 5678 if (bytes != round_len) { 5679 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5680 bytes, round_len, args->data_len); 5681 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5682 (void *)args->mblk, (void *)m); 5683 ASSERT(bytes == round_len); 5684 } 5685 #endif 5686 if (iovcnt <= MAX_IOVECS) { 5687 iovp = iov; 5688 } else { 5689 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5690 } 5691 mblk_to_iov(args->mblk, iovcnt, iovp); 5692 } else if (args->rlist != NULL) { 5693 iovcnt = 1; 5694 iovp = iov; 5695 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5696 iovp->iov_len = args->data_len; 5697 } else { 5698 iovcnt = 1; 5699 iovp = iov; 5700 iovp->iov_base = args->data_val; 5701 iovp->iov_len = args->data_len; 5702 } 5703 5704 uio.uio_iov = iovp; 5705 uio.uio_iovcnt = iovcnt; 5706 5707 uio.uio_segflg = UIO_SYSSPACE; 5708 uio.uio_extflg = UIO_COPY_DEFAULT; 5709 uio.uio_loffset = args->offset; 5710 uio.uio_resid = args->data_len; 5711 uio.uio_llimit = curproc->p_fsz_ctl; 5712 rlimit = uio.uio_llimit - args->offset; 5713 if (rlimit < (u_offset_t)uio.uio_resid) 5714 uio.uio_resid = (int)rlimit; 5715 5716 if (args->stable == UNSTABLE4) 5717 ioflag = 0; 5718 else if (args->stable == FILE_SYNC4) 5719 ioflag = FSYNC; 5720 else if (args->stable == DATA_SYNC4) 5721 ioflag = FDSYNC; 5722 else { 5723 if (iovp != iov) 5724 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5725 *cs->statusp = resp->status = NFS4ERR_INVAL; 5726 goto out; 5727 } 5728 5729 /* 5730 * We're changing creds because VM may fault and we need 5731 * the cred of the current thread to be used if quota 5732 * checking is enabled. 5733 */ 5734 savecred = curthread->t_cred; 5735 curthread->t_cred = cr; 5736 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5737 curthread->t_cred = savecred; 5738 5739 if (iovp != iov) 5740 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5741 5742 if (error) { 5743 *cs->statusp = resp->status = puterrno4(error); 5744 goto out; 5745 } 5746 5747 *cs->statusp = resp->status = NFS4_OK; 5748 resp->count = args->data_len - uio.uio_resid; 5749 5750 if (ioflag == 0) 5751 resp->committed = UNSTABLE4; 5752 else 5753 resp->committed = FILE_SYNC4; 5754 5755 resp->writeverf = Write4verf; 5756 5757 out: 5758 if (in_crit) 5759 nbl_end_crit(vp); 5760 5761 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5762 WRITE4res *, resp); 5763 } 5764 5765 5766 /* XXX put in a header file */ 5767 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5768 5769 void 5770 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5771 struct svc_req *req, cred_t *cr, int *rv) 5772 { 5773 uint_t i; 5774 struct compound_state cs; 5775 5776 if (rv != NULL) 5777 *rv = 0; 5778 rfs4_init_compound_state(&cs); 5779 /* 5780 * Form a reply tag by copying over the reqeuest tag. 5781 */ 5782 resp->tag.utf8string_val = 5783 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5784 resp->tag.utf8string_len = args->tag.utf8string_len; 5785 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5786 resp->tag.utf8string_len); 5787 5788 cs.statusp = &resp->status; 5789 cs.req = req; 5790 5791 /* 5792 * XXX for now, minorversion should be zero 5793 */ 5794 if (args->minorversion != NFS4_MINORVERSION) { 5795 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5796 &cs, COMPOUND4args *, args); 5797 resp->array_len = 0; 5798 resp->array = NULL; 5799 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5800 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5801 &cs, COMPOUND4res *, resp); 5802 return; 5803 } 5804 5805 ASSERT(exi == NULL); 5806 ASSERT(cr == NULL); 5807 5808 cr = crget(); 5809 ASSERT(cr != NULL); 5810 5811 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5812 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5813 &cs, COMPOUND4args *, args); 5814 crfree(cr); 5815 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5816 &cs, COMPOUND4res *, resp); 5817 svcerr_badcred(req->rq_xprt); 5818 if (rv != NULL) 5819 *rv = 1; 5820 return; 5821 } 5822 resp->array_len = args->array_len; 5823 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5824 KM_SLEEP); 5825 5826 cs.basecr = cr; 5827 5828 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5829 COMPOUND4args *, args); 5830 5831 /* 5832 * For now, NFS4 compound processing must be protected by 5833 * exported_lock because it can access more than one exportinfo 5834 * per compound and share/unshare can now change multiple 5835 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5836 * per proc (excluding public exinfo), and exi_count design 5837 * is sufficient to protect concurrent execution of NFS2/3 5838 * ops along with unexport. This lock will be removed as 5839 * part of the NFSv4 phase 2 namespace redesign work. 5840 */ 5841 rw_enter(&exported_lock, RW_READER); 5842 5843 /* 5844 * If this is the first compound we've seen, we need to start all 5845 * new instances' grace periods. 5846 */ 5847 if (rfs4_seen_first_compound == 0) { 5848 rfs4_grace_start_new(); 5849 /* 5850 * This must be set after rfs4_grace_start_new(), otherwise 5851 * another thread could proceed past here before the former 5852 * is finished. 5853 */ 5854 rfs4_seen_first_compound = 1; 5855 } 5856 5857 for (i = 0; i < args->array_len && cs.cont; i++) { 5858 nfs_argop4 *argop; 5859 nfs_resop4 *resop; 5860 uint_t op; 5861 5862 argop = &args->array[i]; 5863 resop = &resp->array[i]; 5864 resop->resop = argop->argop; 5865 op = (uint_t)resop->resop; 5866 5867 if (op < rfsv4disp_cnt) { 5868 /* 5869 * Count the individual ops here; NULL and COMPOUND 5870 * are counted in common_dispatch() 5871 */ 5872 rfsproccnt_v4_ptr[op].value.ui64++; 5873 5874 NFS4_DEBUG(rfs4_debug > 1, 5875 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5876 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5877 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5878 rfs4_op_string[op], *cs.statusp)); 5879 if (*cs.statusp != NFS4_OK) 5880 cs.cont = FALSE; 5881 } else { 5882 /* 5883 * This is effectively dead code since XDR code 5884 * will have already returned BADXDR if op doesn't 5885 * decode to legal value. This only done for a 5886 * day when XDR code doesn't verify v4 opcodes. 5887 */ 5888 op = OP_ILLEGAL; 5889 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5890 5891 rfs4_op_illegal(argop, resop, req, &cs); 5892 cs.cont = FALSE; 5893 } 5894 5895 /* 5896 * If not at last op, and if we are to stop, then 5897 * compact the results array. 5898 */ 5899 if ((i + 1) < args->array_len && !cs.cont) { 5900 nfs_resop4 *new_res = kmem_alloc( 5901 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5902 bcopy(resp->array, 5903 new_res, (i+1) * sizeof (nfs_resop4)); 5904 kmem_free(resp->array, 5905 args->array_len * sizeof (nfs_resop4)); 5906 5907 resp->array_len = i + 1; 5908 resp->array = new_res; 5909 } 5910 } 5911 5912 rw_exit(&exported_lock); 5913 5914 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5915 COMPOUND4res *, resp); 5916 5917 if (cs.vp) 5918 VN_RELE(cs.vp); 5919 if (cs.saved_vp) 5920 VN_RELE(cs.saved_vp); 5921 if (cs.saved_fh.nfs_fh4_val) 5922 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5923 5924 if (cs.basecr) 5925 crfree(cs.basecr); 5926 if (cs.cr) 5927 crfree(cs.cr); 5928 /* 5929 * done with this compound request, free the label 5930 */ 5931 5932 if (req->rq_label != NULL) { 5933 kmem_free(req->rq_label, sizeof (bslabel_t)); 5934 req->rq_label = NULL; 5935 } 5936 } 5937 5938 /* 5939 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5940 * XXX zero out the tag and array values. Need to investigate why the 5941 * XXX calls occur, but at least prevent the panic for now. 5942 */ 5943 void 5944 rfs4_compound_free(COMPOUND4res *resp) 5945 { 5946 uint_t i; 5947 5948 if (resp->tag.utf8string_val) { 5949 UTF8STRING_FREE(resp->tag) 5950 } 5951 5952 for (i = 0; i < resp->array_len; i++) { 5953 nfs_resop4 *resop; 5954 uint_t op; 5955 5956 resop = &resp->array[i]; 5957 op = (uint_t)resop->resop; 5958 if (op < rfsv4disp_cnt) { 5959 (*rfsv4disptab[op].dis_resfree)(resop); 5960 } 5961 } 5962 if (resp->array != NULL) { 5963 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5964 } 5965 } 5966 5967 /* 5968 * Process the value of the compound request rpc flags, as a bit-AND 5969 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5970 */ 5971 void 5972 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5973 { 5974 int i; 5975 int flag = RPC_ALL; 5976 5977 for (i = 0; flag && i < args->array_len; i++) { 5978 uint_t op; 5979 5980 op = (uint_t)args->array[i].argop; 5981 5982 if (op < rfsv4disp_cnt) 5983 flag &= rfsv4disptab[op].dis_flags; 5984 else 5985 flag = 0; 5986 } 5987 *flagp = flag; 5988 } 5989 5990 nfsstat4 5991 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5992 { 5993 nfsstat4 e; 5994 5995 rfs4_dbe_lock(cp->rc_dbe); 5996 5997 if (cp->rc_sysidt != LM_NOSYSID) { 5998 *sp = cp->rc_sysidt; 5999 e = NFS4_OK; 6000 6001 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 6002 *sp = cp->rc_sysidt; 6003 e = NFS4_OK; 6004 6005 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6006 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 6007 } else 6008 e = NFS4ERR_DELAY; 6009 6010 rfs4_dbe_unlock(cp->rc_dbe); 6011 return (e); 6012 } 6013 6014 #if defined(DEBUG) && ! defined(lint) 6015 static void lock_print(char *str, int operation, struct flock64 *flk) 6016 { 6017 char *op, *type; 6018 6019 switch (operation) { 6020 case F_GETLK: op = "F_GETLK"; 6021 break; 6022 case F_SETLK: op = "F_SETLK"; 6023 break; 6024 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6025 break; 6026 default: op = "F_UNKNOWN"; 6027 break; 6028 } 6029 switch (flk->l_type) { 6030 case F_UNLCK: type = "F_UNLCK"; 6031 break; 6032 case F_RDLCK: type = "F_RDLCK"; 6033 break; 6034 case F_WRLCK: type = "F_WRLCK"; 6035 break; 6036 default: type = "F_UNKNOWN"; 6037 break; 6038 } 6039 6040 ASSERT(flk->l_whence == 0); 6041 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6042 str, op, type, (longlong_t)flk->l_start, 6043 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6044 } 6045 6046 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6047 #else 6048 #define LOCK_PRINT(d, s, t, f) 6049 #endif 6050 6051 /*ARGSUSED*/ 6052 static bool_t 6053 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6054 { 6055 return (TRUE); 6056 } 6057 6058 /* 6059 * Look up the pathname using the vp in cs as the directory vnode. 6060 * cs->vp will be the vnode for the file on success 6061 */ 6062 6063 static nfsstat4 6064 rfs4_lookup(component4 *component, struct svc_req *req, 6065 struct compound_state *cs) 6066 { 6067 char *nm; 6068 uint32_t len; 6069 nfsstat4 status; 6070 struct sockaddr *ca; 6071 char *name; 6072 6073 if (cs->vp == NULL) { 6074 return (NFS4ERR_NOFILEHANDLE); 6075 } 6076 if (cs->vp->v_type != VDIR) { 6077 return (NFS4ERR_NOTDIR); 6078 } 6079 6080 if (!utf8_dir_verify(component)) 6081 return (NFS4ERR_INVAL); 6082 6083 nm = utf8_to_fn(component, &len, NULL); 6084 if (nm == NULL) { 6085 return (NFS4ERR_INVAL); 6086 } 6087 6088 if (len > MAXNAMELEN) { 6089 kmem_free(nm, len); 6090 return (NFS4ERR_NAMETOOLONG); 6091 } 6092 6093 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6094 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6095 MAXPATHLEN + 1); 6096 6097 if (name == NULL) { 6098 kmem_free(nm, len); 6099 return (NFS4ERR_INVAL); 6100 } 6101 6102 status = do_rfs4_op_lookup(name, req, cs); 6103 6104 if (name != nm) 6105 kmem_free(name, MAXPATHLEN + 1); 6106 6107 kmem_free(nm, len); 6108 6109 return (status); 6110 } 6111 6112 static nfsstat4 6113 rfs4_lookupfile(component4 *component, struct svc_req *req, 6114 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6115 { 6116 nfsstat4 status; 6117 vnode_t *dvp = cs->vp; 6118 vattr_t bva, ava, fva; 6119 int error; 6120 6121 /* Get "before" change value */ 6122 bva.va_mask = AT_CTIME|AT_SEQ; 6123 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6124 if (error) 6125 return (puterrno4(error)); 6126 6127 /* rfs4_lookup may VN_RELE directory */ 6128 VN_HOLD(dvp); 6129 6130 status = rfs4_lookup(component, req, cs); 6131 if (status != NFS4_OK) { 6132 VN_RELE(dvp); 6133 return (status); 6134 } 6135 6136 /* 6137 * Get "after" change value, if it fails, simply return the 6138 * before value. 6139 */ 6140 ava.va_mask = AT_CTIME|AT_SEQ; 6141 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6142 ava.va_ctime = bva.va_ctime; 6143 ava.va_seq = 0; 6144 } 6145 VN_RELE(dvp); 6146 6147 /* 6148 * Validate the file is a file 6149 */ 6150 fva.va_mask = AT_TYPE|AT_MODE; 6151 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6152 if (error) 6153 return (puterrno4(error)); 6154 6155 if (fva.va_type != VREG) { 6156 if (fva.va_type == VDIR) 6157 return (NFS4ERR_ISDIR); 6158 if (fva.va_type == VLNK) 6159 return (NFS4ERR_SYMLINK); 6160 return (NFS4ERR_INVAL); 6161 } 6162 6163 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6164 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6165 6166 /* 6167 * It is undefined if VOP_LOOKUP will change va_seq, so 6168 * cinfo.atomic = TRUE only if we have 6169 * non-zero va_seq's, and they have not changed. 6170 */ 6171 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6172 cinfo->atomic = TRUE; 6173 else 6174 cinfo->atomic = FALSE; 6175 6176 /* Check for mandatory locking */ 6177 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6178 return (check_open_access(access, cs, req)); 6179 } 6180 6181 static nfsstat4 6182 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6183 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6184 { 6185 int error; 6186 nfsstat4 status = NFS4_OK; 6187 vattr_t va; 6188 6189 tryagain: 6190 6191 /* 6192 * The file open mode used is VWRITE. If the client needs 6193 * some other semantic, then it should do the access checking 6194 * itself. It would have been nice to have the file open mode 6195 * passed as part of the arguments. 6196 */ 6197 6198 *created = TRUE; 6199 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6200 6201 if (error) { 6202 *created = FALSE; 6203 6204 /* 6205 * If we got something other than file already exists 6206 * then just return this error. Otherwise, we got 6207 * EEXIST. If we were doing a GUARDED create, then 6208 * just return this error. Otherwise, we need to 6209 * make sure that this wasn't a duplicate of an 6210 * exclusive create request. 6211 * 6212 * The assumption is made that a non-exclusive create 6213 * request will never return EEXIST. 6214 */ 6215 6216 if (error != EEXIST || mode == GUARDED4) { 6217 status = puterrno4(error); 6218 return (status); 6219 } 6220 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6221 NULL, NULL, NULL); 6222 6223 if (error) { 6224 /* 6225 * We couldn't find the file that we thought that 6226 * we just created. So, we'll just try creating 6227 * it again. 6228 */ 6229 if (error == ENOENT) 6230 goto tryagain; 6231 6232 status = puterrno4(error); 6233 return (status); 6234 } 6235 6236 if (mode == UNCHECKED4) { 6237 /* existing object must be regular file */ 6238 if ((*vpp)->v_type != VREG) { 6239 if ((*vpp)->v_type == VDIR) 6240 status = NFS4ERR_ISDIR; 6241 else if ((*vpp)->v_type == VLNK) 6242 status = NFS4ERR_SYMLINK; 6243 else 6244 status = NFS4ERR_INVAL; 6245 VN_RELE(*vpp); 6246 return (status); 6247 } 6248 6249 return (NFS4_OK); 6250 } 6251 6252 /* Check for duplicate request */ 6253 ASSERT(mtime != 0); 6254 va.va_mask = AT_MTIME; 6255 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6256 if (!error) { 6257 /* We found the file */ 6258 if (va.va_mtime.tv_sec != mtime->tv_sec || 6259 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6260 /* but its not our creation */ 6261 VN_RELE(*vpp); 6262 return (NFS4ERR_EXIST); 6263 } 6264 *created = TRUE; /* retrans of create == created */ 6265 return (NFS4_OK); 6266 } 6267 VN_RELE(*vpp); 6268 return (NFS4ERR_EXIST); 6269 } 6270 6271 return (NFS4_OK); 6272 } 6273 6274 static nfsstat4 6275 check_open_access(uint32_t access, struct compound_state *cs, 6276 struct svc_req *req) 6277 { 6278 int error; 6279 vnode_t *vp; 6280 bool_t readonly; 6281 cred_t *cr = cs->cr; 6282 6283 /* For now we don't allow mandatory locking as per V2/V3 */ 6284 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6285 return (NFS4ERR_ACCESS); 6286 } 6287 6288 vp = cs->vp; 6289 ASSERT(cr != NULL && vp->v_type == VREG); 6290 6291 /* 6292 * If the file system is exported read only and we are trying 6293 * to open for write, then return NFS4ERR_ROFS 6294 */ 6295 6296 readonly = rdonly4(cs->exi, cs->vp, req); 6297 6298 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6299 return (NFS4ERR_ROFS); 6300 6301 if (access & OPEN4_SHARE_ACCESS_READ) { 6302 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6303 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6304 return (NFS4ERR_ACCESS); 6305 } 6306 } 6307 6308 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6309 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6310 if (error) 6311 return (NFS4ERR_ACCESS); 6312 } 6313 6314 return (NFS4_OK); 6315 } 6316 6317 static nfsstat4 6318 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6319 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6320 { 6321 struct nfs4_svgetit_arg sarg; 6322 struct nfs4_ntov_table ntov; 6323 6324 bool_t ntov_table_init = FALSE; 6325 struct statvfs64 sb; 6326 nfsstat4 status; 6327 vnode_t *vp; 6328 vattr_t bva, ava, iva, cva, *vap; 6329 vnode_t *dvp; 6330 timespec32_t *mtime; 6331 char *nm = NULL; 6332 uint_t buflen; 6333 bool_t created; 6334 bool_t setsize = FALSE; 6335 len_t reqsize; 6336 int error; 6337 bool_t trunc; 6338 caller_context_t ct; 6339 component4 *component; 6340 bslabel_t *clabel; 6341 struct sockaddr *ca; 6342 char *name = NULL; 6343 6344 sarg.sbp = &sb; 6345 sarg.is_referral = B_FALSE; 6346 6347 dvp = cs->vp; 6348 6349 /* Check if the file system is read only */ 6350 if (rdonly4(cs->exi, dvp, req)) 6351 return (NFS4ERR_ROFS); 6352 6353 /* check the label of including directory */ 6354 if (is_system_labeled()) { 6355 ASSERT(req->rq_label != NULL); 6356 clabel = req->rq_label; 6357 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6358 "got client label from request(1)", 6359 struct svc_req *, req); 6360 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6361 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6362 cs->exi)) { 6363 return (NFS4ERR_ACCESS); 6364 } 6365 } 6366 } 6367 6368 /* 6369 * Get the last component of path name in nm. cs will reference 6370 * the including directory on success. 6371 */ 6372 component = &args->open_claim4_u.file; 6373 if (!utf8_dir_verify(component)) 6374 return (NFS4ERR_INVAL); 6375 6376 nm = utf8_to_fn(component, &buflen, NULL); 6377 6378 if (nm == NULL) 6379 return (NFS4ERR_RESOURCE); 6380 6381 if (buflen > MAXNAMELEN) { 6382 kmem_free(nm, buflen); 6383 return (NFS4ERR_NAMETOOLONG); 6384 } 6385 6386 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6387 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6388 if (error) { 6389 kmem_free(nm, buflen); 6390 return (puterrno4(error)); 6391 } 6392 6393 if (bva.va_type != VDIR) { 6394 kmem_free(nm, buflen); 6395 return (NFS4ERR_NOTDIR); 6396 } 6397 6398 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6399 6400 switch (args->mode) { 6401 case GUARDED4: 6402 /*FALLTHROUGH*/ 6403 case UNCHECKED4: 6404 nfs4_ntov_table_init(&ntov); 6405 ntov_table_init = TRUE; 6406 6407 *attrset = 0; 6408 status = do_rfs4_set_attrs(attrset, 6409 &args->createhow4_u.createattrs, 6410 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6411 6412 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6413 sarg.vap->va_type != VREG) { 6414 if (sarg.vap->va_type == VDIR) 6415 status = NFS4ERR_ISDIR; 6416 else if (sarg.vap->va_type == VLNK) 6417 status = NFS4ERR_SYMLINK; 6418 else 6419 status = NFS4ERR_INVAL; 6420 } 6421 6422 if (status != NFS4_OK) { 6423 kmem_free(nm, buflen); 6424 nfs4_ntov_table_free(&ntov, &sarg); 6425 *attrset = 0; 6426 return (status); 6427 } 6428 6429 vap = sarg.vap; 6430 vap->va_type = VREG; 6431 vap->va_mask |= AT_TYPE; 6432 6433 if ((vap->va_mask & AT_MODE) == 0) { 6434 vap->va_mask |= AT_MODE; 6435 vap->va_mode = (mode_t)0600; 6436 } 6437 6438 if (vap->va_mask & AT_SIZE) { 6439 6440 /* Disallow create with a non-zero size */ 6441 6442 if ((reqsize = sarg.vap->va_size) != 0) { 6443 kmem_free(nm, buflen); 6444 nfs4_ntov_table_free(&ntov, &sarg); 6445 *attrset = 0; 6446 return (NFS4ERR_INVAL); 6447 } 6448 setsize = TRUE; 6449 } 6450 break; 6451 6452 case EXCLUSIVE4: 6453 /* prohibit EXCL create of named attributes */ 6454 if (dvp->v_flag & V_XATTRDIR) { 6455 kmem_free(nm, buflen); 6456 *attrset = 0; 6457 return (NFS4ERR_INVAL); 6458 } 6459 6460 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6461 cva.va_type = VREG; 6462 /* 6463 * Ensure no time overflows. Assumes underlying 6464 * filesystem supports at least 32 bits. 6465 * Truncate nsec to usec resolution to allow valid 6466 * compares even if the underlying filesystem truncates. 6467 */ 6468 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6469 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6470 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6471 cva.va_mode = (mode_t)0; 6472 vap = &cva; 6473 6474 /* 6475 * For EXCL create, attrset is set to the server attr 6476 * used to cache the client's verifier. 6477 */ 6478 *attrset = FATTR4_TIME_MODIFY_MASK; 6479 break; 6480 } 6481 6482 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6483 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6484 MAXPATHLEN + 1); 6485 6486 if (name == NULL) { 6487 kmem_free(nm, buflen); 6488 return (NFS4ERR_SERVERFAULT); 6489 } 6490 6491 status = create_vnode(dvp, name, vap, args->mode, mtime, 6492 cs->cr, &vp, &created); 6493 if (nm != name) 6494 kmem_free(name, MAXPATHLEN + 1); 6495 kmem_free(nm, buflen); 6496 6497 if (status != NFS4_OK) { 6498 if (ntov_table_init) 6499 nfs4_ntov_table_free(&ntov, &sarg); 6500 *attrset = 0; 6501 return (status); 6502 } 6503 6504 trunc = (setsize && !created); 6505 6506 if (args->mode != EXCLUSIVE4) { 6507 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6508 6509 /* 6510 * True verification that object was created with correct 6511 * attrs is impossible. The attrs could have been changed 6512 * immediately after object creation. If attributes did 6513 * not verify, the only recourse for the server is to 6514 * destroy the object. Maybe if some attrs (like gid) 6515 * are set incorrectly, the object should be destroyed; 6516 * however, seems bad as a default policy. Do we really 6517 * want to destroy an object over one of the times not 6518 * verifying correctly? For these reasons, the server 6519 * currently sets bits in attrset for createattrs 6520 * that were set; however, no verification is done. 6521 * 6522 * vmask_to_nmask accounts for vattr bits set on create 6523 * [do_rfs4_set_attrs() only sets resp bits for 6524 * non-vattr/vfs bits.] 6525 * Mask off any bits we set by default so as not to return 6526 * more attrset bits than were requested in createattrs 6527 */ 6528 if (created) { 6529 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6530 *attrset &= createmask; 6531 } else { 6532 /* 6533 * We did not create the vnode (we tried but it 6534 * already existed). In this case, the only createattr 6535 * that the spec allows the server to set is size, 6536 * and even then, it can only be set if it is 0. 6537 */ 6538 *attrset = 0; 6539 if (trunc) 6540 *attrset = FATTR4_SIZE_MASK; 6541 } 6542 } 6543 if (ntov_table_init) 6544 nfs4_ntov_table_free(&ntov, &sarg); 6545 6546 /* 6547 * Get the initial "after" sequence number, if it fails, 6548 * set to zero, time to before. 6549 */ 6550 iva.va_mask = AT_CTIME|AT_SEQ; 6551 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6552 iva.va_seq = 0; 6553 iva.va_ctime = bva.va_ctime; 6554 } 6555 6556 /* 6557 * create_vnode attempts to create the file exclusive, 6558 * if it already exists the VOP_CREATE will fail and 6559 * may not increase va_seq. It is atomic if 6560 * we haven't changed the directory, but if it has changed 6561 * we don't know what changed it. 6562 */ 6563 if (!created) { 6564 if (bva.va_seq && iva.va_seq && 6565 bva.va_seq == iva.va_seq) 6566 cinfo->atomic = TRUE; 6567 else 6568 cinfo->atomic = FALSE; 6569 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6570 } else { 6571 /* 6572 * The entry was created, we need to sync the 6573 * directory metadata. 6574 */ 6575 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6576 6577 /* 6578 * Get "after" change value, if it fails, simply return the 6579 * before value. 6580 */ 6581 ava.va_mask = AT_CTIME|AT_SEQ; 6582 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6583 ava.va_ctime = bva.va_ctime; 6584 ava.va_seq = 0; 6585 } 6586 6587 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6588 6589 /* 6590 * The cinfo->atomic = TRUE only if we have 6591 * non-zero va_seq's, and it has incremented by exactly one 6592 * during the create_vnode and it didn't 6593 * change during the VOP_FSYNC. 6594 */ 6595 if (bva.va_seq && iva.va_seq && ava.va_seq && 6596 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6597 cinfo->atomic = TRUE; 6598 else 6599 cinfo->atomic = FALSE; 6600 } 6601 6602 /* Check for mandatory locking and that the size gets set. */ 6603 cva.va_mask = AT_MODE; 6604 if (setsize) 6605 cva.va_mask |= AT_SIZE; 6606 6607 /* Assume the worst */ 6608 cs->mandlock = TRUE; 6609 6610 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6611 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6612 6613 /* 6614 * Truncate the file if necessary; this would be 6615 * the case for create over an existing file. 6616 */ 6617 6618 if (trunc) { 6619 int in_crit = 0; 6620 rfs4_file_t *fp; 6621 bool_t create = FALSE; 6622 6623 /* 6624 * We are writing over an existing file. 6625 * Check to see if we need to recall a delegation. 6626 */ 6627 rfs4_hold_deleg_policy(); 6628 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6629 if (rfs4_check_delegated_byfp(FWRITE, fp, 6630 (reqsize == 0), FALSE, FALSE, &clientid)) { 6631 rfs4_file_rele(fp); 6632 rfs4_rele_deleg_policy(); 6633 VN_RELE(vp); 6634 *attrset = 0; 6635 return (NFS4ERR_DELAY); 6636 } 6637 rfs4_file_rele(fp); 6638 } 6639 rfs4_rele_deleg_policy(); 6640 6641 if (nbl_need_check(vp)) { 6642 in_crit = 1; 6643 6644 ASSERT(reqsize == 0); 6645 6646 nbl_start_crit(vp, RW_READER); 6647 if (nbl_conflict(vp, NBL_WRITE, 0, 6648 cva.va_size, 0, NULL)) { 6649 in_crit = 0; 6650 nbl_end_crit(vp); 6651 VN_RELE(vp); 6652 *attrset = 0; 6653 return (NFS4ERR_ACCESS); 6654 } 6655 } 6656 ct.cc_sysid = 0; 6657 ct.cc_pid = 0; 6658 ct.cc_caller_id = nfs4_srv_caller_id; 6659 ct.cc_flags = CC_DONTBLOCK; 6660 6661 cva.va_mask = AT_SIZE; 6662 cva.va_size = reqsize; 6663 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6664 if (in_crit) 6665 nbl_end_crit(vp); 6666 } 6667 } 6668 6669 error = makefh4(&cs->fh, vp, cs->exi); 6670 6671 /* 6672 * Force modified data and metadata out to stable storage. 6673 */ 6674 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6675 6676 if (error) { 6677 VN_RELE(vp); 6678 *attrset = 0; 6679 return (puterrno4(error)); 6680 } 6681 6682 /* if parent dir is attrdir, set namedattr fh flag */ 6683 if (dvp->v_flag & V_XATTRDIR) 6684 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6685 6686 if (cs->vp) 6687 VN_RELE(cs->vp); 6688 6689 cs->vp = vp; 6690 6691 /* 6692 * if we did not create the file, we will need to check 6693 * the access bits on the file 6694 */ 6695 6696 if (!created) { 6697 if (setsize) 6698 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6699 status = check_open_access(args->share_access, cs, req); 6700 if (status != NFS4_OK) 6701 *attrset = 0; 6702 } 6703 return (status); 6704 } 6705 6706 /*ARGSUSED*/ 6707 static void 6708 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6709 rfs4_openowner_t *oo, delegreq_t deleg, 6710 uint32_t access, uint32_t deny, 6711 OPEN4res *resp, int deleg_cur) 6712 { 6713 /* XXX Currently not using req */ 6714 rfs4_state_t *sp; 6715 rfs4_file_t *fp; 6716 bool_t screate = TRUE; 6717 bool_t fcreate = TRUE; 6718 uint32_t open_a, share_a; 6719 uint32_t open_d, share_d; 6720 rfs4_deleg_state_t *dsp; 6721 sysid_t sysid; 6722 nfsstat4 status; 6723 caller_context_t ct; 6724 int fflags = 0; 6725 int recall = 0; 6726 int err; 6727 int first_open; 6728 6729 /* get the file struct and hold a lock on it during initial open */ 6730 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6731 if (fp == NULL) { 6732 resp->status = NFS4ERR_RESOURCE; 6733 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6734 return; 6735 } 6736 6737 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6738 if (sp == NULL) { 6739 resp->status = NFS4ERR_RESOURCE; 6740 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6741 /* No need to keep any reference */ 6742 rw_exit(&fp->rf_file_rwlock); 6743 rfs4_file_rele(fp); 6744 return; 6745 } 6746 6747 /* try to get the sysid before continuing */ 6748 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6749 resp->status = status; 6750 rfs4_file_rele(fp); 6751 /* Not a fully formed open; "close" it */ 6752 if (screate == TRUE) 6753 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6754 rfs4_state_rele(sp); 6755 return; 6756 } 6757 6758 /* Calculate the fflags for this OPEN. */ 6759 if (access & OPEN4_SHARE_ACCESS_READ) 6760 fflags |= FREAD; 6761 if (access & OPEN4_SHARE_ACCESS_WRITE) 6762 fflags |= FWRITE; 6763 6764 rfs4_dbe_lock(sp->rs_dbe); 6765 6766 /* 6767 * Calculate the new deny and access mode that this open is adding to 6768 * the file for this open owner; 6769 */ 6770 open_d = (deny & ~sp->rs_open_deny); 6771 open_a = (access & ~sp->rs_open_access); 6772 6773 /* 6774 * Calculate the new share access and share deny modes that this open 6775 * is adding to the file for this open owner; 6776 */ 6777 share_a = (access & ~sp->rs_share_access); 6778 share_d = (deny & ~sp->rs_share_deny); 6779 6780 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6781 6782 /* 6783 * Check to see the client has already sent an open for this 6784 * open owner on this file with the same share/deny modes. 6785 * If so, we don't need to check for a conflict and we don't 6786 * need to add another shrlock. If not, then we need to 6787 * check for conflicts in deny and access before checking for 6788 * conflicts in delegation. We don't want to recall a 6789 * delegation based on an open that will eventually fail based 6790 * on shares modes. 6791 */ 6792 6793 if (share_a || share_d) { 6794 if ((err = rfs4_share(sp, access, deny)) != 0) { 6795 rfs4_dbe_unlock(sp->rs_dbe); 6796 resp->status = err; 6797 6798 rfs4_file_rele(fp); 6799 /* Not a fully formed open; "close" it */ 6800 if (screate == TRUE) 6801 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6802 rfs4_state_rele(sp); 6803 return; 6804 } 6805 } 6806 6807 rfs4_dbe_lock(fp->rf_dbe); 6808 6809 /* 6810 * Check to see if this file is delegated and if so, if a 6811 * recall needs to be done. 6812 */ 6813 if (rfs4_check_recall(sp, access)) { 6814 rfs4_dbe_unlock(fp->rf_dbe); 6815 rfs4_dbe_unlock(sp->rs_dbe); 6816 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6817 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6818 rfs4_dbe_lock(sp->rs_dbe); 6819 6820 /* if state closed while lock was dropped */ 6821 if (sp->rs_closed) { 6822 if (share_a || share_d) 6823 (void) rfs4_unshare(sp); 6824 rfs4_dbe_unlock(sp->rs_dbe); 6825 rfs4_file_rele(fp); 6826 /* Not a fully formed open; "close" it */ 6827 if (screate == TRUE) 6828 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6829 rfs4_state_rele(sp); 6830 resp->status = NFS4ERR_OLD_STATEID; 6831 return; 6832 } 6833 6834 rfs4_dbe_lock(fp->rf_dbe); 6835 /* Let's see if the delegation was returned */ 6836 if (rfs4_check_recall(sp, access)) { 6837 rfs4_dbe_unlock(fp->rf_dbe); 6838 if (share_a || share_d) 6839 (void) rfs4_unshare(sp); 6840 rfs4_dbe_unlock(sp->rs_dbe); 6841 rfs4_file_rele(fp); 6842 rfs4_update_lease(sp->rs_owner->ro_client); 6843 6844 /* Not a fully formed open; "close" it */ 6845 if (screate == TRUE) 6846 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6847 rfs4_state_rele(sp); 6848 resp->status = NFS4ERR_DELAY; 6849 return; 6850 } 6851 } 6852 /* 6853 * the share check passed and any delegation conflict has been 6854 * taken care of, now call vop_open. 6855 * if this is the first open then call vop_open with fflags. 6856 * if not, call vn_open_upgrade with just the upgrade flags. 6857 * 6858 * if the file has been opened already, it will have the current 6859 * access mode in the state struct. if it has no share access, then 6860 * this is a new open. 6861 * 6862 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6863 * call VOP_OPEN(), just do the open upgrade. 6864 */ 6865 if (first_open && !deleg_cur) { 6866 ct.cc_sysid = sysid; 6867 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 6868 ct.cc_caller_id = nfs4_srv_caller_id; 6869 ct.cc_flags = CC_DONTBLOCK; 6870 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6871 if (err) { 6872 rfs4_dbe_unlock(fp->rf_dbe); 6873 if (share_a || share_d) 6874 (void) rfs4_unshare(sp); 6875 rfs4_dbe_unlock(sp->rs_dbe); 6876 rfs4_file_rele(fp); 6877 6878 /* Not a fully formed open; "close" it */ 6879 if (screate == TRUE) 6880 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6881 rfs4_state_rele(sp); 6882 /* check if a monitor detected a delegation conflict */ 6883 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6884 resp->status = NFS4ERR_DELAY; 6885 else 6886 resp->status = NFS4ERR_SERVERFAULT; 6887 return; 6888 } 6889 } else { /* open upgrade */ 6890 /* 6891 * calculate the fflags for the new mode that is being added 6892 * by this upgrade. 6893 */ 6894 fflags = 0; 6895 if (open_a & OPEN4_SHARE_ACCESS_READ) 6896 fflags |= FREAD; 6897 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6898 fflags |= FWRITE; 6899 vn_open_upgrade(cs->vp, fflags); 6900 } 6901 sp->rs_open_access |= access; 6902 sp->rs_open_deny |= deny; 6903 6904 if (open_d & OPEN4_SHARE_DENY_READ) 6905 fp->rf_deny_read++; 6906 if (open_d & OPEN4_SHARE_DENY_WRITE) 6907 fp->rf_deny_write++; 6908 fp->rf_share_deny |= deny; 6909 6910 if (open_a & OPEN4_SHARE_ACCESS_READ) 6911 fp->rf_access_read++; 6912 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6913 fp->rf_access_write++; 6914 fp->rf_share_access |= access; 6915 6916 /* 6917 * Check for delegation here. if the deleg argument is not 6918 * DELEG_ANY, then this is a reclaim from a client and 6919 * we must honor the delegation requested. If necessary we can 6920 * set the recall flag. 6921 */ 6922 6923 dsp = rfs4_grant_delegation(deleg, sp, &recall); 6924 6925 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 6926 6927 next_stateid(&sp->rs_stateid); 6928 6929 resp->stateid = sp->rs_stateid.stateid; 6930 6931 rfs4_dbe_unlock(fp->rf_dbe); 6932 rfs4_dbe_unlock(sp->rs_dbe); 6933 6934 if (dsp) { 6935 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6936 rfs4_deleg_state_rele(dsp); 6937 } 6938 6939 rfs4_file_rele(fp); 6940 rfs4_state_rele(sp); 6941 6942 resp->status = NFS4_OK; 6943 } 6944 6945 /*ARGSUSED*/ 6946 static void 6947 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6948 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6949 { 6950 change_info4 *cinfo = &resp->cinfo; 6951 bitmap4 *attrset = &resp->attrset; 6952 6953 if (args->opentype == OPEN4_NOCREATE) 6954 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6955 req, cs, args->share_access, cinfo); 6956 else { 6957 /* inhibit delegation grants during exclusive create */ 6958 6959 if (args->mode == EXCLUSIVE4) 6960 rfs4_disable_delegation(); 6961 6962 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6963 oo->ro_client->rc_clientid); 6964 } 6965 6966 if (resp->status == NFS4_OK) { 6967 6968 /* cs->vp cs->fh now reference the desired file */ 6969 6970 rfs4_do_open(cs, req, oo, 6971 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 6972 args->share_access, args->share_deny, resp, 0); 6973 6974 /* 6975 * If rfs4_createfile set attrset, we must 6976 * clear this attrset before the response is copied. 6977 */ 6978 if (resp->status != NFS4_OK && resp->attrset) { 6979 resp->attrset = 0; 6980 } 6981 } 6982 else 6983 *cs->statusp = resp->status; 6984 6985 if (args->mode == EXCLUSIVE4) 6986 rfs4_enable_delegation(); 6987 } 6988 6989 /*ARGSUSED*/ 6990 static void 6991 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6992 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6993 { 6994 change_info4 *cinfo = &resp->cinfo; 6995 vattr_t va; 6996 vtype_t v_type = cs->vp->v_type; 6997 int error = 0; 6998 6999 /* Verify that we have a regular file */ 7000 if (v_type != VREG) { 7001 if (v_type == VDIR) 7002 resp->status = NFS4ERR_ISDIR; 7003 else if (v_type == VLNK) 7004 resp->status = NFS4ERR_SYMLINK; 7005 else 7006 resp->status = NFS4ERR_INVAL; 7007 return; 7008 } 7009 7010 va.va_mask = AT_MODE|AT_UID; 7011 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7012 if (error) { 7013 resp->status = puterrno4(error); 7014 return; 7015 } 7016 7017 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7018 7019 /* 7020 * Check if we have access to the file, Note the the file 7021 * could have originally been open UNCHECKED or GUARDED 7022 * with mode bits that will now fail, but there is nothing 7023 * we can really do about that except in the case that the 7024 * owner of the file is the one requesting the open. 7025 */ 7026 if (crgetuid(cs->cr) != va.va_uid) { 7027 resp->status = check_open_access(args->share_access, cs, req); 7028 if (resp->status != NFS4_OK) { 7029 return; 7030 } 7031 } 7032 7033 /* 7034 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7035 */ 7036 cinfo->before = 0; 7037 cinfo->after = 0; 7038 cinfo->atomic = FALSE; 7039 7040 rfs4_do_open(cs, req, oo, 7041 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 7042 args->share_access, args->share_deny, resp, 0); 7043 } 7044 7045 static void 7046 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7047 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7048 { 7049 int error; 7050 nfsstat4 status; 7051 stateid4 stateid = 7052 args->open_claim4_u.delegate_cur_info.delegate_stateid; 7053 rfs4_deleg_state_t *dsp; 7054 7055 /* 7056 * Find the state info from the stateid and confirm that the 7057 * file is delegated. If the state openowner is the same as 7058 * the supplied openowner we're done. If not, get the file 7059 * info from the found state info. Use that file info to 7060 * create the state for this lock owner. Note solaris doen't 7061 * really need the pathname to find the file. We may want to 7062 * lookup the pathname and make sure that the vp exist and 7063 * matches the vp in the file structure. However it is 7064 * possible that the pathname nolonger exists (local process 7065 * unlinks the file), so this may not be that useful. 7066 */ 7067 7068 status = rfs4_get_deleg_state(&stateid, &dsp); 7069 if (status != NFS4_OK) { 7070 resp->status = status; 7071 return; 7072 } 7073 7074 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7075 7076 /* 7077 * New lock owner, create state. Since this was probably called 7078 * in response to a CB_RECALL we set deleg to DELEG_NONE 7079 */ 7080 7081 ASSERT(cs->vp != NULL); 7082 VN_RELE(cs->vp); 7083 VN_HOLD(dsp->rds_finfo->rf_vp); 7084 cs->vp = dsp->rds_finfo->rf_vp; 7085 7086 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7087 rfs4_deleg_state_rele(dsp); 7088 *cs->statusp = resp->status = puterrno4(error); 7089 return; 7090 } 7091 7092 /* Mark progress for delegation returns */ 7093 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7094 rfs4_deleg_state_rele(dsp); 7095 rfs4_do_open(cs, req, oo, DELEG_NONE, 7096 args->share_access, args->share_deny, resp, 1); 7097 } 7098 7099 /*ARGSUSED*/ 7100 static void 7101 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7102 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7103 { 7104 /* 7105 * Lookup the pathname, it must already exist since this file 7106 * was delegated. 7107 * 7108 * Find the file and state info for this vp and open owner pair. 7109 * check that they are in fact delegated. 7110 * check that the state access and deny modes are the same. 7111 * 7112 * Return the delgation possibly seting the recall flag. 7113 */ 7114 rfs4_file_t *fp; 7115 rfs4_state_t *sp; 7116 bool_t create = FALSE; 7117 bool_t dcreate = FALSE; 7118 rfs4_deleg_state_t *dsp; 7119 nfsace4 *ace; 7120 7121 /* Note we ignore oflags */ 7122 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7123 req, cs, args->share_access, &resp->cinfo); 7124 7125 if (resp->status != NFS4_OK) { 7126 return; 7127 } 7128 7129 /* get the file struct and hold a lock on it during initial open */ 7130 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7131 if (fp == NULL) { 7132 resp->status = NFS4ERR_RESOURCE; 7133 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7134 return; 7135 } 7136 7137 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7138 if (sp == NULL) { 7139 resp->status = NFS4ERR_SERVERFAULT; 7140 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7141 rw_exit(&fp->rf_file_rwlock); 7142 rfs4_file_rele(fp); 7143 return; 7144 } 7145 7146 rfs4_dbe_lock(sp->rs_dbe); 7147 rfs4_dbe_lock(fp->rf_dbe); 7148 if (args->share_access != sp->rs_share_access || 7149 args->share_deny != sp->rs_share_deny || 7150 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7151 NFS4_DEBUG(rfs4_debug, 7152 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7153 rfs4_dbe_unlock(fp->rf_dbe); 7154 rfs4_dbe_unlock(sp->rs_dbe); 7155 rfs4_file_rele(fp); 7156 rfs4_state_rele(sp); 7157 resp->status = NFS4ERR_SERVERFAULT; 7158 return; 7159 } 7160 rfs4_dbe_unlock(fp->rf_dbe); 7161 rfs4_dbe_unlock(sp->rs_dbe); 7162 7163 dsp = rfs4_finddeleg(sp, &dcreate); 7164 if (dsp == NULL) { 7165 rfs4_state_rele(sp); 7166 rfs4_file_rele(fp); 7167 resp->status = NFS4ERR_SERVERFAULT; 7168 return; 7169 } 7170 7171 next_stateid(&sp->rs_stateid); 7172 7173 resp->stateid = sp->rs_stateid.stateid; 7174 7175 resp->delegation.delegation_type = dsp->rds_dtype; 7176 7177 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7178 open_read_delegation4 *rv = 7179 &resp->delegation.open_delegation4_u.read; 7180 7181 rv->stateid = dsp->rds_delegid.stateid; 7182 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7183 ace = &rv->permissions; 7184 } else { 7185 open_write_delegation4 *rv = 7186 &resp->delegation.open_delegation4_u.write; 7187 7188 rv->stateid = dsp->rds_delegid.stateid; 7189 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7190 ace = &rv->permissions; 7191 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7192 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7193 } 7194 7195 /* XXX For now */ 7196 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7197 ace->flag = 0; 7198 ace->access_mask = 0; 7199 ace->who.utf8string_len = 0; 7200 ace->who.utf8string_val = 0; 7201 7202 rfs4_deleg_state_rele(dsp); 7203 rfs4_state_rele(sp); 7204 rfs4_file_rele(fp); 7205 } 7206 7207 typedef enum { 7208 NFS4_CHKSEQ_OKAY = 0, 7209 NFS4_CHKSEQ_REPLAY = 1, 7210 NFS4_CHKSEQ_BAD = 2 7211 } rfs4_chkseq_t; 7212 7213 /* 7214 * Generic function for sequence number checks. 7215 */ 7216 static rfs4_chkseq_t 7217 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7218 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7219 { 7220 /* Same sequence ids and matching operations? */ 7221 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7222 if (copyres == TRUE) { 7223 rfs4_free_reply(resop); 7224 rfs4_copy_reply(resop, lastop); 7225 } 7226 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7227 "Replayed SEQID %d\n", seqid)); 7228 return (NFS4_CHKSEQ_REPLAY); 7229 } 7230 7231 /* If the incoming sequence is not the next expected then it is bad */ 7232 if (rqst_seq != seqid + 1) { 7233 if (rqst_seq == seqid) { 7234 NFS4_DEBUG(rfs4_debug, 7235 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7236 "but last op was %d current op is %d\n", 7237 lastop->resop, resop->resop)); 7238 return (NFS4_CHKSEQ_BAD); 7239 } 7240 NFS4_DEBUG(rfs4_debug, 7241 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7242 rqst_seq, seqid)); 7243 return (NFS4_CHKSEQ_BAD); 7244 } 7245 7246 /* Everything okay -- next expected */ 7247 return (NFS4_CHKSEQ_OKAY); 7248 } 7249 7250 7251 static rfs4_chkseq_t 7252 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7253 { 7254 rfs4_chkseq_t rc; 7255 7256 rfs4_dbe_lock(op->ro_dbe); 7257 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7258 TRUE); 7259 rfs4_dbe_unlock(op->ro_dbe); 7260 7261 if (rc == NFS4_CHKSEQ_OKAY) 7262 rfs4_update_lease(op->ro_client); 7263 7264 return (rc); 7265 } 7266 7267 static rfs4_chkseq_t 7268 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7269 { 7270 rfs4_chkseq_t rc; 7271 7272 rfs4_dbe_lock(op->ro_dbe); 7273 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7274 olo_seqid, resop, FALSE); 7275 rfs4_dbe_unlock(op->ro_dbe); 7276 7277 return (rc); 7278 } 7279 7280 static rfs4_chkseq_t 7281 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7282 { 7283 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7284 7285 rfs4_dbe_lock(lsp->rls_dbe); 7286 if (!lsp->rls_skip_seqid_check) 7287 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7288 resop, TRUE); 7289 rfs4_dbe_unlock(lsp->rls_dbe); 7290 7291 return (rc); 7292 } 7293 7294 static void 7295 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7296 struct svc_req *req, struct compound_state *cs) 7297 { 7298 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7299 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7300 open_owner4 *owner = &args->owner; 7301 open_claim_type4 claim = args->claim; 7302 rfs4_client_t *cp; 7303 rfs4_openowner_t *oo; 7304 bool_t create; 7305 bool_t replay = FALSE; 7306 int can_reclaim; 7307 7308 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7309 OPEN4args *, args); 7310 7311 if (cs->vp == NULL) { 7312 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7313 goto end; 7314 } 7315 7316 /* 7317 * Need to check clientid and lease expiration first based on 7318 * error ordering and incrementing sequence id. 7319 */ 7320 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7321 if (cp == NULL) { 7322 *cs->statusp = resp->status = 7323 rfs4_check_clientid(&owner->clientid, 0); 7324 goto end; 7325 } 7326 7327 if (rfs4_lease_expired(cp)) { 7328 rfs4_client_close(cp); 7329 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7330 goto end; 7331 } 7332 can_reclaim = cp->rc_can_reclaim; 7333 7334 /* 7335 * Find the open_owner for use from this point forward. Take 7336 * care in updating the sequence id based on the type of error 7337 * being returned. 7338 */ 7339 retry: 7340 create = TRUE; 7341 oo = rfs4_findopenowner(owner, &create, args->seqid); 7342 if (oo == NULL) { 7343 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 7344 rfs4_client_rele(cp); 7345 goto end; 7346 } 7347 7348 /* Hold off access to the sequence space while the open is done */ 7349 rfs4_sw_enter(&oo->ro_sw); 7350 7351 /* 7352 * If the open_owner existed before at the server, then check 7353 * the sequence id. 7354 */ 7355 if (!create && !oo->ro_postpone_confirm) { 7356 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7357 case NFS4_CHKSEQ_BAD: 7358 if ((args->seqid > oo->ro_open_seqid) && 7359 oo->ro_need_confirm) { 7360 rfs4_free_opens(oo, TRUE, FALSE); 7361 rfs4_sw_exit(&oo->ro_sw); 7362 rfs4_openowner_rele(oo); 7363 goto retry; 7364 } 7365 resp->status = NFS4ERR_BAD_SEQID; 7366 goto out; 7367 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7368 replay = TRUE; 7369 goto out; 7370 default: 7371 break; 7372 } 7373 7374 /* 7375 * Sequence was ok and open owner exists 7376 * check to see if we have yet to see an 7377 * open_confirm. 7378 */ 7379 if (oo->ro_need_confirm) { 7380 rfs4_free_opens(oo, TRUE, FALSE); 7381 rfs4_sw_exit(&oo->ro_sw); 7382 rfs4_openowner_rele(oo); 7383 goto retry; 7384 } 7385 } 7386 /* Grace only applies to regular-type OPENs */ 7387 if (rfs4_clnt_in_grace(cp) && 7388 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7389 *cs->statusp = resp->status = NFS4ERR_GRACE; 7390 goto out; 7391 } 7392 7393 /* 7394 * If previous state at the server existed then can_reclaim 7395 * will be set. If not reply NFS4ERR_NO_GRACE to the 7396 * client. 7397 */ 7398 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7399 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7400 goto out; 7401 } 7402 7403 7404 /* 7405 * Reject the open if the client has missed the grace period 7406 */ 7407 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7408 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7409 goto out; 7410 } 7411 7412 /* Couple of up-front bookkeeping items */ 7413 if (oo->ro_need_confirm) { 7414 /* 7415 * If this is a reclaim OPEN then we should not ask 7416 * for a confirmation of the open_owner per the 7417 * protocol specification. 7418 */ 7419 if (claim == CLAIM_PREVIOUS) 7420 oo->ro_need_confirm = FALSE; 7421 else 7422 resp->rflags |= OPEN4_RESULT_CONFIRM; 7423 } 7424 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7425 7426 /* 7427 * If there is an unshared filesystem mounted on this vnode, 7428 * do not allow to open/create in this directory. 7429 */ 7430 if (vn_ismntpt(cs->vp)) { 7431 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7432 goto out; 7433 } 7434 7435 /* 7436 * access must READ, WRITE, or BOTH. No access is invalid. 7437 * deny can be READ, WRITE, BOTH, or NONE. 7438 * bits not defined for access/deny are invalid. 7439 */ 7440 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7441 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7442 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7443 *cs->statusp = resp->status = NFS4ERR_INVAL; 7444 goto out; 7445 } 7446 7447 7448 /* 7449 * make sure attrset is zero before response is built. 7450 */ 7451 resp->attrset = 0; 7452 7453 switch (claim) { 7454 case CLAIM_NULL: 7455 rfs4_do_opennull(cs, req, args, oo, resp); 7456 break; 7457 case CLAIM_PREVIOUS: 7458 rfs4_do_openprev(cs, req, args, oo, resp); 7459 break; 7460 case CLAIM_DELEGATE_CUR: 7461 rfs4_do_opendelcur(cs, req, args, oo, resp); 7462 break; 7463 case CLAIM_DELEGATE_PREV: 7464 rfs4_do_opendelprev(cs, req, args, oo, resp); 7465 break; 7466 default: 7467 resp->status = NFS4ERR_INVAL; 7468 break; 7469 } 7470 7471 out: 7472 rfs4_client_rele(cp); 7473 7474 /* Catch sequence id handling here to make it a little easier */ 7475 switch (resp->status) { 7476 case NFS4ERR_BADXDR: 7477 case NFS4ERR_BAD_SEQID: 7478 case NFS4ERR_BAD_STATEID: 7479 case NFS4ERR_NOFILEHANDLE: 7480 case NFS4ERR_RESOURCE: 7481 case NFS4ERR_STALE_CLIENTID: 7482 case NFS4ERR_STALE_STATEID: 7483 /* 7484 * The protocol states that if any of these errors are 7485 * being returned, the sequence id should not be 7486 * incremented. Any other return requires an 7487 * increment. 7488 */ 7489 break; 7490 default: 7491 /* Always update the lease in this case */ 7492 rfs4_update_lease(oo->ro_client); 7493 7494 /* Regular response - copy the result */ 7495 if (!replay) 7496 rfs4_update_open_resp(oo, resop, &cs->fh); 7497 7498 /* 7499 * REPLAY case: Only if the previous response was OK 7500 * do we copy the filehandle. If not OK, no 7501 * filehandle to copy. 7502 */ 7503 if (replay == TRUE && 7504 resp->status == NFS4_OK && 7505 oo->ro_reply_fh.nfs_fh4_val) { 7506 /* 7507 * If this is a replay, we must restore the 7508 * current filehandle/vp to that of what was 7509 * returned originally. Try our best to do 7510 * it. 7511 */ 7512 nfs_fh4_fmt_t *fh_fmtp = 7513 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7514 7515 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7516 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7517 7518 if (cs->exi == NULL) { 7519 resp->status = NFS4ERR_STALE; 7520 goto finish; 7521 } 7522 7523 VN_RELE(cs->vp); 7524 7525 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7526 &resp->status); 7527 7528 if (cs->vp == NULL) 7529 goto finish; 7530 7531 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7532 } 7533 7534 /* 7535 * If this was a replay, no need to update the 7536 * sequence id. If the open_owner was not created on 7537 * this pass, then update. The first use of an 7538 * open_owner will not bump the sequence id. 7539 */ 7540 if (replay == FALSE && !create) 7541 rfs4_update_open_sequence(oo); 7542 /* 7543 * If the client is receiving an error and the 7544 * open_owner needs to be confirmed, there is no way 7545 * to notify the client of this fact ignoring the fact 7546 * that the server has no method of returning a 7547 * stateid to confirm. Therefore, the server needs to 7548 * mark this open_owner in a way as to avoid the 7549 * sequence id checking the next time the client uses 7550 * this open_owner. 7551 */ 7552 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7553 oo->ro_postpone_confirm = TRUE; 7554 /* 7555 * If OK response then clear the postpone flag and 7556 * reset the sequence id to keep in sync with the 7557 * client. 7558 */ 7559 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7560 oo->ro_postpone_confirm = FALSE; 7561 oo->ro_open_seqid = args->seqid; 7562 } 7563 break; 7564 } 7565 7566 finish: 7567 *cs->statusp = resp->status; 7568 7569 rfs4_sw_exit(&oo->ro_sw); 7570 rfs4_openowner_rele(oo); 7571 7572 end: 7573 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7574 OPEN4res *, resp); 7575 } 7576 7577 /*ARGSUSED*/ 7578 void 7579 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7580 struct svc_req *req, struct compound_state *cs) 7581 { 7582 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7583 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7584 rfs4_state_t *sp; 7585 nfsstat4 status; 7586 7587 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7588 OPEN_CONFIRM4args *, args); 7589 7590 if (cs->vp == NULL) { 7591 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7592 goto out; 7593 } 7594 7595 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7596 if (status != NFS4_OK) { 7597 *cs->statusp = resp->status = status; 7598 goto out; 7599 } 7600 7601 /* Ensure specified filehandle matches */ 7602 if (cs->vp != sp->rs_finfo->rf_vp) { 7603 rfs4_state_rele(sp); 7604 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7605 goto out; 7606 } 7607 7608 /* hold off other access to open_owner while we tinker */ 7609 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7610 7611 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7612 case NFS4_CHECK_STATEID_OKAY: 7613 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7614 resop) != 0) { 7615 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7616 break; 7617 } 7618 /* 7619 * If it is the appropriate stateid and determined to 7620 * be "OKAY" then this means that the stateid does not 7621 * need to be confirmed and the client is in error for 7622 * sending an OPEN_CONFIRM. 7623 */ 7624 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7625 break; 7626 case NFS4_CHECK_STATEID_OLD: 7627 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7628 break; 7629 case NFS4_CHECK_STATEID_BAD: 7630 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7631 break; 7632 case NFS4_CHECK_STATEID_EXPIRED: 7633 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7634 break; 7635 case NFS4_CHECK_STATEID_CLOSED: 7636 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7637 break; 7638 case NFS4_CHECK_STATEID_REPLAY: 7639 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7640 resop)) { 7641 case NFS4_CHKSEQ_OKAY: 7642 /* 7643 * This is replayed stateid; if seqid matches 7644 * next expected, then client is using wrong seqid. 7645 */ 7646 /* fall through */ 7647 case NFS4_CHKSEQ_BAD: 7648 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7649 break; 7650 case NFS4_CHKSEQ_REPLAY: 7651 /* 7652 * Note this case is the duplicate case so 7653 * resp->status is already set. 7654 */ 7655 *cs->statusp = resp->status; 7656 rfs4_update_lease(sp->rs_owner->ro_client); 7657 break; 7658 } 7659 break; 7660 case NFS4_CHECK_STATEID_UNCONFIRMED: 7661 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7662 resop) != NFS4_CHKSEQ_OKAY) { 7663 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7664 break; 7665 } 7666 *cs->statusp = resp->status = NFS4_OK; 7667 7668 next_stateid(&sp->rs_stateid); 7669 resp->open_stateid = sp->rs_stateid.stateid; 7670 sp->rs_owner->ro_need_confirm = FALSE; 7671 rfs4_update_lease(sp->rs_owner->ro_client); 7672 rfs4_update_open_sequence(sp->rs_owner); 7673 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7674 break; 7675 default: 7676 ASSERT(FALSE); 7677 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7678 break; 7679 } 7680 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7681 rfs4_state_rele(sp); 7682 7683 out: 7684 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7685 OPEN_CONFIRM4res *, resp); 7686 } 7687 7688 /*ARGSUSED*/ 7689 void 7690 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7691 struct svc_req *req, struct compound_state *cs) 7692 { 7693 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7694 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7695 uint32_t access = args->share_access; 7696 uint32_t deny = args->share_deny; 7697 nfsstat4 status; 7698 rfs4_state_t *sp; 7699 rfs4_file_t *fp; 7700 int fflags = 0; 7701 7702 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7703 OPEN_DOWNGRADE4args *, args); 7704 7705 if (cs->vp == NULL) { 7706 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7707 goto out; 7708 } 7709 7710 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7711 if (status != NFS4_OK) { 7712 *cs->statusp = resp->status = status; 7713 goto out; 7714 } 7715 7716 /* Ensure specified filehandle matches */ 7717 if (cs->vp != sp->rs_finfo->rf_vp) { 7718 rfs4_state_rele(sp); 7719 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7720 goto out; 7721 } 7722 7723 /* hold off other access to open_owner while we tinker */ 7724 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7725 7726 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7727 case NFS4_CHECK_STATEID_OKAY: 7728 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7729 resop) != NFS4_CHKSEQ_OKAY) { 7730 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7731 goto end; 7732 } 7733 break; 7734 case NFS4_CHECK_STATEID_OLD: 7735 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7736 goto end; 7737 case NFS4_CHECK_STATEID_BAD: 7738 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7739 goto end; 7740 case NFS4_CHECK_STATEID_EXPIRED: 7741 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7742 goto end; 7743 case NFS4_CHECK_STATEID_CLOSED: 7744 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7745 goto end; 7746 case NFS4_CHECK_STATEID_UNCONFIRMED: 7747 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7748 goto end; 7749 case NFS4_CHECK_STATEID_REPLAY: 7750 /* Check the sequence id for the open owner */ 7751 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7752 resop)) { 7753 case NFS4_CHKSEQ_OKAY: 7754 /* 7755 * This is replayed stateid; if seqid matches 7756 * next expected, then client is using wrong seqid. 7757 */ 7758 /* fall through */ 7759 case NFS4_CHKSEQ_BAD: 7760 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7761 goto end; 7762 case NFS4_CHKSEQ_REPLAY: 7763 /* 7764 * Note this case is the duplicate case so 7765 * resp->status is already set. 7766 */ 7767 *cs->statusp = resp->status; 7768 rfs4_update_lease(sp->rs_owner->ro_client); 7769 goto end; 7770 } 7771 break; 7772 default: 7773 ASSERT(FALSE); 7774 break; 7775 } 7776 7777 rfs4_dbe_lock(sp->rs_dbe); 7778 /* 7779 * Check that the new access modes and deny modes are valid. 7780 * Check that no invalid bits are set. 7781 */ 7782 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7783 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7784 *cs->statusp = resp->status = NFS4ERR_INVAL; 7785 rfs4_update_open_sequence(sp->rs_owner); 7786 rfs4_dbe_unlock(sp->rs_dbe); 7787 goto end; 7788 } 7789 7790 /* 7791 * The new modes must be a subset of the current modes and 7792 * the access must specify at least one mode. To test that 7793 * the new mode is a subset of the current modes we bitwise 7794 * AND them together and check that the result equals the new 7795 * mode. For example: 7796 * New mode, access == R and current mode, sp->rs_open_access == RW 7797 * access & sp->rs_open_access == R == access, so the new access mode 7798 * is valid. Consider access == RW, sp->rs_open_access = R 7799 * access & sp->rs_open_access == R != access, so the new access mode 7800 * is invalid. 7801 */ 7802 if ((access & sp->rs_open_access) != access || 7803 (deny & sp->rs_open_deny) != deny || 7804 (access & 7805 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7806 *cs->statusp = resp->status = NFS4ERR_INVAL; 7807 rfs4_update_open_sequence(sp->rs_owner); 7808 rfs4_dbe_unlock(sp->rs_dbe); 7809 goto end; 7810 } 7811 7812 /* 7813 * Release any share locks associated with this stateID. 7814 * Strictly speaking, this violates the spec because the 7815 * spec effectively requires that open downgrade be atomic. 7816 * At present, fs_shrlock does not have this capability. 7817 */ 7818 (void) rfs4_unshare(sp); 7819 7820 status = rfs4_share(sp, access, deny); 7821 if (status != NFS4_OK) { 7822 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7823 rfs4_update_open_sequence(sp->rs_owner); 7824 rfs4_dbe_unlock(sp->rs_dbe); 7825 goto end; 7826 } 7827 7828 fp = sp->rs_finfo; 7829 rfs4_dbe_lock(fp->rf_dbe); 7830 7831 /* 7832 * If the current mode has deny read and the new mode 7833 * does not, decrement the number of deny read mode bits 7834 * and if it goes to zero turn off the deny read bit 7835 * on the file. 7836 */ 7837 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7838 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7839 fp->rf_deny_read--; 7840 if (fp->rf_deny_read == 0) 7841 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 7842 } 7843 7844 /* 7845 * If the current mode has deny write and the new mode 7846 * does not, decrement the number of deny write mode bits 7847 * and if it goes to zero turn off the deny write bit 7848 * on the file. 7849 */ 7850 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 7851 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7852 fp->rf_deny_write--; 7853 if (fp->rf_deny_write == 0) 7854 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7855 } 7856 7857 /* 7858 * If the current mode has access read and the new mode 7859 * does not, decrement the number of access read mode bits 7860 * and if it goes to zero turn off the access read bit 7861 * on the file. set fflags to FREAD for the call to 7862 * vn_open_downgrade(). 7863 */ 7864 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 7865 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7866 fp->rf_access_read--; 7867 if (fp->rf_access_read == 0) 7868 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 7869 fflags |= FREAD; 7870 } 7871 7872 /* 7873 * If the current mode has access write and the new mode 7874 * does not, decrement the number of access write mode bits 7875 * and if it goes to zero turn off the access write bit 7876 * on the file. set fflags to FWRITE for the call to 7877 * vn_open_downgrade(). 7878 */ 7879 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 7880 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7881 fp->rf_access_write--; 7882 if (fp->rf_access_write == 0) 7883 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7884 fflags |= FWRITE; 7885 } 7886 7887 /* Check that the file is still accessible */ 7888 ASSERT(fp->rf_share_access); 7889 7890 rfs4_dbe_unlock(fp->rf_dbe); 7891 7892 /* now set the new open access and deny modes */ 7893 sp->rs_open_access = access; 7894 sp->rs_open_deny = deny; 7895 7896 /* 7897 * we successfully downgraded the share lock, now we need to downgrade 7898 * the open. it is possible that the downgrade was only for a deny 7899 * mode and we have nothing else to do. 7900 */ 7901 if ((fflags & (FREAD|FWRITE)) != 0) 7902 vn_open_downgrade(cs->vp, fflags); 7903 7904 /* Update the stateid */ 7905 next_stateid(&sp->rs_stateid); 7906 resp->open_stateid = sp->rs_stateid.stateid; 7907 7908 rfs4_dbe_unlock(sp->rs_dbe); 7909 7910 *cs->statusp = resp->status = NFS4_OK; 7911 /* Update the lease */ 7912 rfs4_update_lease(sp->rs_owner->ro_client); 7913 /* And the sequence */ 7914 rfs4_update_open_sequence(sp->rs_owner); 7915 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7916 7917 end: 7918 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7919 rfs4_state_rele(sp); 7920 out: 7921 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7922 OPEN_DOWNGRADE4res *, resp); 7923 } 7924 7925 /* 7926 * The logic behind this function is detailed in the NFSv4 RFC in the 7927 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7928 * that section for explicit guidance to server behavior for 7929 * SETCLIENTID. 7930 */ 7931 void 7932 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7933 struct svc_req *req, struct compound_state *cs) 7934 { 7935 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7936 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7937 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7938 rfs4_clntip_t *ci; 7939 bool_t create; 7940 char *addr, *netid; 7941 int len; 7942 7943 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7944 SETCLIENTID4args *, args); 7945 retry: 7946 newcp = cp_confirmed = cp_unconfirmed = NULL; 7947 7948 /* 7949 * Save the caller's IP address 7950 */ 7951 args->client.cl_addr = 7952 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 7953 7954 /* 7955 * Record if it is a Solaris client that cannot handle referrals. 7956 */ 7957 if (strstr(args->client.id_val, "Solaris") && 7958 !strstr(args->client.id_val, "+referrals")) { 7959 /* Add a "yes, it's downrev" record */ 7960 create = TRUE; 7961 ci = rfs4_find_clntip(args->client.cl_addr, &create); 7962 ASSERT(ci != NULL); 7963 rfs4_dbe_rele(ci->ri_dbe); 7964 } else { 7965 /* Remove any previous record */ 7966 rfs4_invalidate_clntip(args->client.cl_addr); 7967 } 7968 7969 /* 7970 * In search of an EXISTING client matching the incoming 7971 * request to establish a new client identifier at the server 7972 */ 7973 create = TRUE; 7974 cp = rfs4_findclient(&args->client, &create, NULL); 7975 7976 /* Should never happen */ 7977 ASSERT(cp != NULL); 7978 7979 if (cp == NULL) { 7980 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7981 goto out; 7982 } 7983 7984 /* 7985 * Easiest case. Client identifier is newly created and is 7986 * unconfirmed. Also note that for this case, no other 7987 * entries exist for the client identifier. Nothing else to 7988 * check. Just setup the response and respond. 7989 */ 7990 if (create) { 7991 *cs->statusp = res->status = NFS4_OK; 7992 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 7993 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 7994 cp->rc_confirm_verf; 7995 /* Setup callback information; CB_NULL confirmation later */ 7996 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 7997 7998 rfs4_client_rele(cp); 7999 goto out; 8000 } 8001 8002 /* 8003 * An existing, confirmed client may exist but it may not have 8004 * been active for at least one lease period. If so, then 8005 * "close" the client and create a new client identifier 8006 */ 8007 if (rfs4_lease_expired(cp)) { 8008 rfs4_client_close(cp); 8009 goto retry; 8010 } 8011 8012 if (cp->rc_need_confirm == TRUE) 8013 cp_unconfirmed = cp; 8014 else 8015 cp_confirmed = cp; 8016 8017 cp = NULL; 8018 8019 /* 8020 * We have a confirmed client, now check for an 8021 * unconfimred entry 8022 */ 8023 if (cp_confirmed) { 8024 /* If creds don't match then client identifier is inuse */ 8025 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 8026 rfs4_cbinfo_t *cbp; 8027 /* 8028 * Some one else has established this client 8029 * id. Try and say * who they are. We will use 8030 * the call back address supplied by * the 8031 * first client. 8032 */ 8033 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8034 8035 addr = netid = NULL; 8036 8037 cbp = &cp_confirmed->rc_cbinfo; 8038 if (cbp->cb_callback.cb_location.r_addr && 8039 cbp->cb_callback.cb_location.r_netid) { 8040 cb_client4 *cbcp = &cbp->cb_callback; 8041 8042 len = strlen(cbcp->cb_location.r_addr)+1; 8043 addr = kmem_alloc(len, KM_SLEEP); 8044 bcopy(cbcp->cb_location.r_addr, addr, len); 8045 len = strlen(cbcp->cb_location.r_netid)+1; 8046 netid = kmem_alloc(len, KM_SLEEP); 8047 bcopy(cbcp->cb_location.r_netid, netid, len); 8048 } 8049 8050 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8051 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8052 8053 rfs4_client_rele(cp_confirmed); 8054 } 8055 8056 /* 8057 * Confirmed, creds match, and verifier matches; must 8058 * be an update of the callback info 8059 */ 8060 if (cp_confirmed->rc_nfs_client.verifier == 8061 args->client.verifier) { 8062 /* Setup callback information */ 8063 rfs4_client_setcb(cp_confirmed, &args->callback, 8064 args->callback_ident); 8065 8066 /* everything okay -- move ahead */ 8067 *cs->statusp = res->status = NFS4_OK; 8068 res->SETCLIENTID4res_u.resok4.clientid = 8069 cp_confirmed->rc_clientid; 8070 8071 /* update the confirm_verifier and return it */ 8072 rfs4_client_scv_next(cp_confirmed); 8073 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8074 cp_confirmed->rc_confirm_verf; 8075 8076 rfs4_client_rele(cp_confirmed); 8077 goto out; 8078 } 8079 8080 /* 8081 * Creds match but the verifier doesn't. Must search 8082 * for an unconfirmed client that would be replaced by 8083 * this request. 8084 */ 8085 create = FALSE; 8086 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8087 cp_confirmed); 8088 } 8089 8090 /* 8091 * At this point, we have taken care of the brand new client 8092 * struct, INUSE case, update of an existing, and confirmed 8093 * client struct. 8094 */ 8095 8096 /* 8097 * check to see if things have changed while we originally 8098 * picked up the client struct. If they have, then return and 8099 * retry the processing of this SETCLIENTID request. 8100 */ 8101 if (cp_unconfirmed) { 8102 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8103 if (!cp_unconfirmed->rc_need_confirm) { 8104 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8105 rfs4_client_rele(cp_unconfirmed); 8106 if (cp_confirmed) 8107 rfs4_client_rele(cp_confirmed); 8108 goto retry; 8109 } 8110 /* do away with the old unconfirmed one */ 8111 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8112 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8113 rfs4_client_rele(cp_unconfirmed); 8114 cp_unconfirmed = NULL; 8115 } 8116 8117 /* 8118 * This search will temporarily hide the confirmed client 8119 * struct while a new client struct is created as the 8120 * unconfirmed one. 8121 */ 8122 create = TRUE; 8123 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8124 8125 ASSERT(newcp != NULL); 8126 8127 if (newcp == NULL) { 8128 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8129 rfs4_client_rele(cp_confirmed); 8130 goto out; 8131 } 8132 8133 /* 8134 * If one was not created, then a similar request must be in 8135 * process so release and start over with this one 8136 */ 8137 if (create != TRUE) { 8138 rfs4_client_rele(newcp); 8139 if (cp_confirmed) 8140 rfs4_client_rele(cp_confirmed); 8141 goto retry; 8142 } 8143 8144 *cs->statusp = res->status = NFS4_OK; 8145 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8146 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8147 newcp->rc_confirm_verf; 8148 /* Setup callback information; CB_NULL confirmation later */ 8149 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8150 8151 newcp->rc_cp_confirmed = cp_confirmed; 8152 8153 rfs4_client_rele(newcp); 8154 8155 out: 8156 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8157 SETCLIENTID4res *, res); 8158 } 8159 8160 /*ARGSUSED*/ 8161 void 8162 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8163 struct svc_req *req, struct compound_state *cs) 8164 { 8165 SETCLIENTID_CONFIRM4args *args = 8166 &argop->nfs_argop4_u.opsetclientid_confirm; 8167 SETCLIENTID_CONFIRM4res *res = 8168 &resop->nfs_resop4_u.opsetclientid_confirm; 8169 rfs4_client_t *cp, *cptoclose = NULL; 8170 8171 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8172 struct compound_state *, cs, 8173 SETCLIENTID_CONFIRM4args *, args); 8174 8175 *cs->statusp = res->status = NFS4_OK; 8176 8177 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8178 8179 if (cp == NULL) { 8180 *cs->statusp = res->status = 8181 rfs4_check_clientid(&args->clientid, 1); 8182 goto out; 8183 } 8184 8185 if (!creds_ok(cp, req, cs)) { 8186 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8187 rfs4_client_rele(cp); 8188 goto out; 8189 } 8190 8191 /* If the verifier doesn't match, the record doesn't match */ 8192 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8193 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8194 rfs4_client_rele(cp); 8195 goto out; 8196 } 8197 8198 rfs4_dbe_lock(cp->rc_dbe); 8199 cp->rc_need_confirm = FALSE; 8200 if (cp->rc_cp_confirmed) { 8201 cptoclose = cp->rc_cp_confirmed; 8202 cptoclose->rc_ss_remove = 1; 8203 cp->rc_cp_confirmed = NULL; 8204 } 8205 8206 /* 8207 * Update the client's associated server instance, if it's changed 8208 * since the client was created. 8209 */ 8210 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8211 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8212 8213 /* 8214 * Record clientid in stable storage. 8215 * Must be done after server instance has been assigned. 8216 */ 8217 rfs4_ss_clid(cp); 8218 8219 rfs4_dbe_unlock(cp->rc_dbe); 8220 8221 if (cptoclose) 8222 /* don't need to rele, client_close does it */ 8223 rfs4_client_close(cptoclose); 8224 8225 /* If needed, initiate CB_NULL call for callback path */ 8226 rfs4_deleg_cb_check(cp); 8227 rfs4_update_lease(cp); 8228 8229 /* 8230 * Check to see if client can perform reclaims 8231 */ 8232 rfs4_ss_chkclid(cp); 8233 8234 rfs4_client_rele(cp); 8235 8236 out: 8237 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8238 struct compound_state *, cs, 8239 SETCLIENTID_CONFIRM4 *, res); 8240 } 8241 8242 8243 /*ARGSUSED*/ 8244 void 8245 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8246 struct svc_req *req, struct compound_state *cs) 8247 { 8248 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8249 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8250 rfs4_state_t *sp; 8251 nfsstat4 status; 8252 8253 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8254 CLOSE4args *, args); 8255 8256 if (cs->vp == NULL) { 8257 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8258 goto out; 8259 } 8260 8261 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8262 if (status != NFS4_OK) { 8263 *cs->statusp = resp->status = status; 8264 goto out; 8265 } 8266 8267 /* Ensure specified filehandle matches */ 8268 if (cs->vp != sp->rs_finfo->rf_vp) { 8269 rfs4_state_rele(sp); 8270 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8271 goto out; 8272 } 8273 8274 /* hold off other access to open_owner while we tinker */ 8275 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8276 8277 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8278 case NFS4_CHECK_STATEID_OKAY: 8279 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8280 resop) != NFS4_CHKSEQ_OKAY) { 8281 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8282 goto end; 8283 } 8284 break; 8285 case NFS4_CHECK_STATEID_OLD: 8286 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8287 goto end; 8288 case NFS4_CHECK_STATEID_BAD: 8289 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8290 goto end; 8291 case NFS4_CHECK_STATEID_EXPIRED: 8292 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8293 goto end; 8294 case NFS4_CHECK_STATEID_CLOSED: 8295 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8296 goto end; 8297 case NFS4_CHECK_STATEID_UNCONFIRMED: 8298 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8299 goto end; 8300 case NFS4_CHECK_STATEID_REPLAY: 8301 /* Check the sequence id for the open owner */ 8302 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8303 resop)) { 8304 case NFS4_CHKSEQ_OKAY: 8305 /* 8306 * This is replayed stateid; if seqid matches 8307 * next expected, then client is using wrong seqid. 8308 */ 8309 /* FALL THROUGH */ 8310 case NFS4_CHKSEQ_BAD: 8311 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8312 goto end; 8313 case NFS4_CHKSEQ_REPLAY: 8314 /* 8315 * Note this case is the duplicate case so 8316 * resp->status is already set. 8317 */ 8318 *cs->statusp = resp->status; 8319 rfs4_update_lease(sp->rs_owner->ro_client); 8320 goto end; 8321 } 8322 break; 8323 default: 8324 ASSERT(FALSE); 8325 break; 8326 } 8327 8328 rfs4_dbe_lock(sp->rs_dbe); 8329 8330 /* Update the stateid. */ 8331 next_stateid(&sp->rs_stateid); 8332 resp->open_stateid = sp->rs_stateid.stateid; 8333 8334 rfs4_dbe_unlock(sp->rs_dbe); 8335 8336 rfs4_update_lease(sp->rs_owner->ro_client); 8337 rfs4_update_open_sequence(sp->rs_owner); 8338 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8339 8340 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8341 8342 *cs->statusp = resp->status = status; 8343 8344 end: 8345 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8346 rfs4_state_rele(sp); 8347 out: 8348 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8349 CLOSE4res *, resp); 8350 } 8351 8352 /* 8353 * Manage the counts on the file struct and close all file locks 8354 */ 8355 /*ARGSUSED*/ 8356 void 8357 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8358 bool_t close_of_client) 8359 { 8360 rfs4_file_t *fp = sp->rs_finfo; 8361 rfs4_lo_state_t *lsp; 8362 int fflags = 0; 8363 8364 /* 8365 * If this call is part of the larger closing down of client 8366 * state then it is just easier to release all locks 8367 * associated with this client instead of going through each 8368 * individual file and cleaning locks there. 8369 */ 8370 if (close_of_client) { 8371 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8372 !list_is_empty(&sp->rs_lostatelist) && 8373 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8374 /* Is the PxFS kernel module loaded? */ 8375 if (lm_remove_file_locks != NULL) { 8376 int new_sysid; 8377 8378 /* Encode the cluster nodeid in new sysid */ 8379 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8380 lm_set_nlmid_flk(&new_sysid); 8381 8382 /* 8383 * This PxFS routine removes file locks for a 8384 * client over all nodes of a cluster. 8385 */ 8386 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8387 "lm_remove_file_locks(sysid=0x%x)\n", 8388 new_sysid)); 8389 (*lm_remove_file_locks)(new_sysid); 8390 } else { 8391 struct flock64 flk; 8392 8393 /* Release all locks for this client */ 8394 flk.l_type = F_UNLKSYS; 8395 flk.l_whence = 0; 8396 flk.l_start = 0; 8397 flk.l_len = 0; 8398 flk.l_sysid = 8399 sp->rs_owner->ro_client->rc_sysidt; 8400 flk.l_pid = 0; 8401 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8402 &flk, F_REMOTELOCK | FREAD | FWRITE, 8403 (u_offset_t)0, NULL, CRED(), NULL); 8404 } 8405 8406 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8407 } 8408 } 8409 8410 /* 8411 * Release all locks on this file by this lock owner or at 8412 * least mark the locks as having been released 8413 */ 8414 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8415 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8416 lsp->rls_locks_cleaned = TRUE; 8417 8418 /* Was this already taken care of above? */ 8419 if (!close_of_client && 8420 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8421 (void) cleanlocks(sp->rs_finfo->rf_vp, 8422 lsp->rls_locker->rl_pid, 8423 lsp->rls_locker->rl_client->rc_sysidt); 8424 } 8425 8426 /* 8427 * Release any shrlocks associated with this open state ID. 8428 * This must be done before the rfs4_state gets marked closed. 8429 */ 8430 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8431 (void) rfs4_unshare(sp); 8432 8433 if (sp->rs_open_access) { 8434 rfs4_dbe_lock(fp->rf_dbe); 8435 8436 /* 8437 * Decrement the count for each access and deny bit that this 8438 * state has contributed to the file. 8439 * If the file counts go to zero 8440 * clear the appropriate bit in the appropriate mask. 8441 */ 8442 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8443 fp->rf_access_read--; 8444 fflags |= FREAD; 8445 if (fp->rf_access_read == 0) 8446 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8447 } 8448 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8449 fp->rf_access_write--; 8450 fflags |= FWRITE; 8451 if (fp->rf_access_write == 0) 8452 fp->rf_share_access &= 8453 ~OPEN4_SHARE_ACCESS_WRITE; 8454 } 8455 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8456 fp->rf_deny_read--; 8457 if (fp->rf_deny_read == 0) 8458 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8459 } 8460 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8461 fp->rf_deny_write--; 8462 if (fp->rf_deny_write == 0) 8463 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8464 } 8465 8466 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8467 8468 rfs4_dbe_unlock(fp->rf_dbe); 8469 8470 sp->rs_open_access = 0; 8471 sp->rs_open_deny = 0; 8472 } 8473 } 8474 8475 /* 8476 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8477 */ 8478 static nfsstat4 8479 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8480 { 8481 rfs4_lockowner_t *lo; 8482 rfs4_client_t *cp; 8483 uint32_t len; 8484 8485 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8486 if (lo != NULL) { 8487 cp = lo->rl_client; 8488 if (rfs4_lease_expired(cp)) { 8489 rfs4_lockowner_rele(lo); 8490 rfs4_dbe_hold(cp->rc_dbe); 8491 rfs4_client_close(cp); 8492 return (NFS4ERR_EXPIRED); 8493 } 8494 dp->owner.clientid = lo->rl_owner.clientid; 8495 len = lo->rl_owner.owner_len; 8496 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8497 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8498 dp->owner.owner_len = len; 8499 rfs4_lockowner_rele(lo); 8500 goto finish; 8501 } 8502 8503 /* 8504 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8505 * of the client id contain the boot time for a NFS4 lock. So we 8506 * fabricate and identity by setting clientid to the sysid, and 8507 * the lock owner to the pid. 8508 */ 8509 dp->owner.clientid = flk->l_sysid; 8510 len = sizeof (pid_t); 8511 dp->owner.owner_len = len; 8512 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8513 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8514 finish: 8515 dp->offset = flk->l_start; 8516 dp->length = flk->l_len; 8517 8518 if (flk->l_type == F_RDLCK) 8519 dp->locktype = READ_LT; 8520 else if (flk->l_type == F_WRLCK) 8521 dp->locktype = WRITE_LT; 8522 else 8523 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8524 8525 return (NFS4_OK); 8526 } 8527 8528 static int 8529 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8530 { 8531 int error; 8532 struct flock64 flk; 8533 int i; 8534 clock_t delaytime; 8535 int cmd; 8536 8537 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8538 retry: 8539 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8540 8541 for (i = 0; i < rfs4_maxlock_tries; i++) { 8542 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8543 error = VOP_FRLOCK(vp, cmd, 8544 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8545 8546 if (error != EAGAIN && error != EACCES) 8547 break; 8548 8549 if (i < rfs4_maxlock_tries - 1) { 8550 delay(delaytime); 8551 delaytime *= 2; 8552 } 8553 } 8554 8555 if (error == EAGAIN || error == EACCES) { 8556 /* Get the owner of the lock */ 8557 flk = *flock; 8558 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8559 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8560 (u_offset_t)0, NULL, cred, NULL) == 0) { 8561 if (flk.l_type == F_UNLCK) { 8562 /* No longer locked, retry */ 8563 goto retry; 8564 } 8565 *flock = flk; 8566 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8567 F_GETLK, &flk); 8568 } 8569 } 8570 8571 return (error); 8572 } 8573 8574 /*ARGSUSED*/ 8575 static nfsstat4 8576 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8577 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8578 { 8579 nfsstat4 status; 8580 rfs4_lockowner_t *lo = lsp->rls_locker; 8581 rfs4_state_t *sp = lsp->rls_state; 8582 struct flock64 flock; 8583 int16_t ltype; 8584 int flag; 8585 int error; 8586 sysid_t sysid; 8587 LOCK4res *lres; 8588 8589 if (rfs4_lease_expired(lo->rl_client)) { 8590 return (NFS4ERR_EXPIRED); 8591 } 8592 8593 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8594 return (status); 8595 8596 /* Check for zero length. To lock to end of file use all ones for V4 */ 8597 if (length == 0) 8598 return (NFS4ERR_INVAL); 8599 else if (length == (length4)(~0)) 8600 length = 0; /* Posix to end of file */ 8601 8602 retry: 8603 rfs4_dbe_lock(sp->rs_dbe); 8604 if (sp->rs_closed) { 8605 rfs4_dbe_unlock(sp->rs_dbe); 8606 return (NFS4ERR_OLD_STATEID); 8607 } 8608 8609 if (resop->resop != OP_LOCKU) { 8610 switch (locktype) { 8611 case READ_LT: 8612 case READW_LT: 8613 if ((sp->rs_share_access 8614 & OPEN4_SHARE_ACCESS_READ) == 0) { 8615 rfs4_dbe_unlock(sp->rs_dbe); 8616 8617 return (NFS4ERR_OPENMODE); 8618 } 8619 ltype = F_RDLCK; 8620 break; 8621 case WRITE_LT: 8622 case WRITEW_LT: 8623 if ((sp->rs_share_access 8624 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8625 rfs4_dbe_unlock(sp->rs_dbe); 8626 8627 return (NFS4ERR_OPENMODE); 8628 } 8629 ltype = F_WRLCK; 8630 break; 8631 } 8632 } else 8633 ltype = F_UNLCK; 8634 8635 flock.l_type = ltype; 8636 flock.l_whence = 0; /* SEEK_SET */ 8637 flock.l_start = offset; 8638 flock.l_len = length; 8639 flock.l_sysid = sysid; 8640 flock.l_pid = lsp->rls_locker->rl_pid; 8641 8642 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8643 if (flock.l_len < 0 || flock.l_start < 0) { 8644 rfs4_dbe_unlock(sp->rs_dbe); 8645 return (NFS4ERR_INVAL); 8646 } 8647 8648 /* 8649 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8650 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8651 */ 8652 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8653 8654 error = setlock(sp->rs_finfo->rf_vp, &flock, flag, cred); 8655 if (error == 0) { 8656 rfs4_dbe_lock(lsp->rls_dbe); 8657 next_stateid(&lsp->rls_lockid); 8658 rfs4_dbe_unlock(lsp->rls_dbe); 8659 } 8660 8661 rfs4_dbe_unlock(sp->rs_dbe); 8662 8663 /* 8664 * N.B. We map error values to nfsv4 errors. This is differrent 8665 * than puterrno4 routine. 8666 */ 8667 switch (error) { 8668 case 0: 8669 status = NFS4_OK; 8670 break; 8671 case EAGAIN: 8672 case EACCES: /* Old value */ 8673 /* Can only get here if op is OP_LOCK */ 8674 ASSERT(resop->resop == OP_LOCK); 8675 lres = &resop->nfs_resop4_u.oplock; 8676 status = NFS4ERR_DENIED; 8677 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8678 == NFS4ERR_EXPIRED) 8679 goto retry; 8680 break; 8681 case ENOLCK: 8682 status = NFS4ERR_DELAY; 8683 break; 8684 case EOVERFLOW: 8685 status = NFS4ERR_INVAL; 8686 break; 8687 case EINVAL: 8688 status = NFS4ERR_NOTSUPP; 8689 break; 8690 default: 8691 status = NFS4ERR_SERVERFAULT; 8692 break; 8693 } 8694 8695 return (status); 8696 } 8697 8698 /*ARGSUSED*/ 8699 void 8700 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8701 struct svc_req *req, struct compound_state *cs) 8702 { 8703 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8704 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8705 nfsstat4 status; 8706 stateid4 *stateid; 8707 rfs4_lockowner_t *lo; 8708 rfs4_client_t *cp; 8709 rfs4_state_t *sp = NULL; 8710 rfs4_lo_state_t *lsp = NULL; 8711 bool_t ls_sw_held = FALSE; 8712 bool_t create = TRUE; 8713 bool_t lcreate = TRUE; 8714 bool_t dup_lock = FALSE; 8715 int rc; 8716 8717 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8718 LOCK4args *, args); 8719 8720 if (cs->vp == NULL) { 8721 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8722 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8723 cs, LOCK4res *, resp); 8724 return; 8725 } 8726 8727 if (args->locker.new_lock_owner) { 8728 /* Create a new lockowner for this instance */ 8729 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8730 8731 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8732 8733 stateid = &olo->open_stateid; 8734 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8735 if (status != NFS4_OK) { 8736 NFS4_DEBUG(rfs4_debug, 8737 (CE_NOTE, "Get state failed in lock %d", status)); 8738 *cs->statusp = resp->status = status; 8739 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8740 cs, LOCK4res *, resp); 8741 return; 8742 } 8743 8744 /* Ensure specified filehandle matches */ 8745 if (cs->vp != sp->rs_finfo->rf_vp) { 8746 rfs4_state_rele(sp); 8747 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8748 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8749 cs, LOCK4res *, resp); 8750 return; 8751 } 8752 8753 /* hold off other access to open_owner while we tinker */ 8754 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8755 8756 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8757 case NFS4_CHECK_STATEID_OLD: 8758 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8759 goto end; 8760 case NFS4_CHECK_STATEID_BAD: 8761 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8762 goto end; 8763 case NFS4_CHECK_STATEID_EXPIRED: 8764 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8765 goto end; 8766 case NFS4_CHECK_STATEID_UNCONFIRMED: 8767 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8768 goto end; 8769 case NFS4_CHECK_STATEID_CLOSED: 8770 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8771 goto end; 8772 case NFS4_CHECK_STATEID_OKAY: 8773 case NFS4_CHECK_STATEID_REPLAY: 8774 switch (rfs4_check_olo_seqid(olo->open_seqid, 8775 sp->rs_owner, resop)) { 8776 case NFS4_CHKSEQ_OKAY: 8777 if (rc == NFS4_CHECK_STATEID_OKAY) 8778 break; 8779 /* 8780 * This is replayed stateid; if seqid 8781 * matches next expected, then client 8782 * is using wrong seqid. 8783 */ 8784 /* FALLTHROUGH */ 8785 case NFS4_CHKSEQ_BAD: 8786 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8787 goto end; 8788 case NFS4_CHKSEQ_REPLAY: 8789 /* This is a duplicate LOCK request */ 8790 dup_lock = TRUE; 8791 8792 /* 8793 * For a duplicate we do not want to 8794 * create a new lockowner as it should 8795 * already exist. 8796 * Turn off the lockowner create flag. 8797 */ 8798 lcreate = FALSE; 8799 } 8800 break; 8801 } 8802 8803 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8804 if (lo == NULL) { 8805 NFS4_DEBUG(rfs4_debug, 8806 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8807 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8808 goto end; 8809 } 8810 8811 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8812 if (lsp == NULL) { 8813 rfs4_update_lease(sp->rs_owner->ro_client); 8814 /* 8815 * Only update theh open_seqid if this is not 8816 * a duplicate request 8817 */ 8818 if (dup_lock == FALSE) { 8819 rfs4_update_open_sequence(sp->rs_owner); 8820 } 8821 8822 NFS4_DEBUG(rfs4_debug, 8823 (CE_NOTE, "rfs4_op_lock: no state")); 8824 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8825 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8826 rfs4_lockowner_rele(lo); 8827 goto end; 8828 } 8829 8830 /* 8831 * This is the new_lock_owner branch and the client is 8832 * supposed to be associating a new lock_owner with 8833 * the open file at this point. If we find that a 8834 * lock_owner/state association already exists and a 8835 * successful LOCK request was returned to the client, 8836 * an error is returned to the client since this is 8837 * not appropriate. The client should be using the 8838 * existing lock_owner branch. 8839 */ 8840 if (dup_lock == FALSE && create == FALSE) { 8841 if (lsp->rls_lock_completed == TRUE) { 8842 *cs->statusp = 8843 resp->status = NFS4ERR_BAD_SEQID; 8844 rfs4_lockowner_rele(lo); 8845 goto end; 8846 } 8847 } 8848 8849 rfs4_update_lease(sp->rs_owner->ro_client); 8850 8851 /* 8852 * Only update theh open_seqid if this is not 8853 * a duplicate request 8854 */ 8855 if (dup_lock == FALSE) { 8856 rfs4_update_open_sequence(sp->rs_owner); 8857 } 8858 8859 /* 8860 * If this is a duplicate lock request, just copy the 8861 * previously saved reply and return. 8862 */ 8863 if (dup_lock == TRUE) { 8864 /* verify that lock_seqid's match */ 8865 if (lsp->rls_seqid != olo->lock_seqid) { 8866 NFS4_DEBUG(rfs4_debug, 8867 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8868 "lsp->seqid=%d old->seqid=%d", 8869 lsp->rls_seqid, olo->lock_seqid)); 8870 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8871 } else { 8872 rfs4_copy_reply(resop, &lsp->rls_reply); 8873 /* 8874 * Make sure to copy the just 8875 * retrieved reply status into the 8876 * overall compound status 8877 */ 8878 *cs->statusp = resp->status; 8879 } 8880 rfs4_lockowner_rele(lo); 8881 goto end; 8882 } 8883 8884 rfs4_dbe_lock(lsp->rls_dbe); 8885 8886 /* Make sure to update the lock sequence id */ 8887 lsp->rls_seqid = olo->lock_seqid; 8888 8889 NFS4_DEBUG(rfs4_debug, 8890 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 8891 8892 /* 8893 * This is used to signify the newly created lockowner 8894 * stateid and its sequence number. The checks for 8895 * sequence number and increment don't occur on the 8896 * very first lock request for a lockowner. 8897 */ 8898 lsp->rls_skip_seqid_check = TRUE; 8899 8900 /* hold off other access to lsp while we tinker */ 8901 rfs4_sw_enter(&lsp->rls_sw); 8902 ls_sw_held = TRUE; 8903 8904 rfs4_dbe_unlock(lsp->rls_dbe); 8905 8906 rfs4_lockowner_rele(lo); 8907 } else { 8908 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8909 /* get lsp and hold the lock on the underlying file struct */ 8910 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8911 != NFS4_OK) { 8912 *cs->statusp = resp->status = status; 8913 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8914 cs, LOCK4res *, resp); 8915 return; 8916 } 8917 create = FALSE; /* We didn't create lsp */ 8918 8919 /* Ensure specified filehandle matches */ 8920 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 8921 rfs4_lo_state_rele(lsp, TRUE); 8922 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8923 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8924 cs, LOCK4res *, resp); 8925 return; 8926 } 8927 8928 /* hold off other access to lsp while we tinker */ 8929 rfs4_sw_enter(&lsp->rls_sw); 8930 ls_sw_held = TRUE; 8931 8932 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8933 /* 8934 * The stateid looks like it was okay (expected to be 8935 * the next one) 8936 */ 8937 case NFS4_CHECK_STATEID_OKAY: 8938 /* 8939 * The sequence id is now checked. Determine 8940 * if this is a replay or if it is in the 8941 * expected (next) sequence. In the case of a 8942 * replay, there are two replay conditions 8943 * that may occur. The first is the normal 8944 * condition where a LOCK is done with a 8945 * NFS4_OK response and the stateid is 8946 * updated. That case is handled below when 8947 * the stateid is identified as a REPLAY. The 8948 * second is the case where an error is 8949 * returned, like NFS4ERR_DENIED, and the 8950 * sequence number is updated but the stateid 8951 * is not updated. This second case is dealt 8952 * with here. So it may seem odd that the 8953 * stateid is okay but the sequence id is a 8954 * replay but it is okay. 8955 */ 8956 switch (rfs4_check_lock_seqid( 8957 args->locker.locker4_u.lock_owner.lock_seqid, 8958 lsp, resop)) { 8959 case NFS4_CHKSEQ_REPLAY: 8960 if (resp->status != NFS4_OK) { 8961 /* 8962 * Here is our replay and need 8963 * to verify that the last 8964 * response was an error. 8965 */ 8966 *cs->statusp = resp->status; 8967 goto end; 8968 } 8969 /* 8970 * This is done since the sequence id 8971 * looked like a replay but it didn't 8972 * pass our check so a BAD_SEQID is 8973 * returned as a result. 8974 */ 8975 /*FALLTHROUGH*/ 8976 case NFS4_CHKSEQ_BAD: 8977 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8978 goto end; 8979 case NFS4_CHKSEQ_OKAY: 8980 /* Everything looks okay move ahead */ 8981 break; 8982 } 8983 break; 8984 case NFS4_CHECK_STATEID_OLD: 8985 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8986 goto end; 8987 case NFS4_CHECK_STATEID_BAD: 8988 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8989 goto end; 8990 case NFS4_CHECK_STATEID_EXPIRED: 8991 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8992 goto end; 8993 case NFS4_CHECK_STATEID_CLOSED: 8994 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8995 goto end; 8996 case NFS4_CHECK_STATEID_REPLAY: 8997 switch (rfs4_check_lock_seqid( 8998 args->locker.locker4_u.lock_owner.lock_seqid, 8999 lsp, resop)) { 9000 case NFS4_CHKSEQ_OKAY: 9001 /* 9002 * This is a replayed stateid; if 9003 * seqid matches the next expected, 9004 * then client is using wrong seqid. 9005 */ 9006 case NFS4_CHKSEQ_BAD: 9007 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9008 goto end; 9009 case NFS4_CHKSEQ_REPLAY: 9010 rfs4_update_lease(lsp->rls_locker->rl_client); 9011 *cs->statusp = status = resp->status; 9012 goto end; 9013 } 9014 break; 9015 default: 9016 ASSERT(FALSE); 9017 break; 9018 } 9019 9020 rfs4_update_lock_sequence(lsp); 9021 rfs4_update_lease(lsp->rls_locker->rl_client); 9022 } 9023 9024 /* 9025 * NFS4 only allows locking on regular files, so 9026 * verify type of object. 9027 */ 9028 if (cs->vp->v_type != VREG) { 9029 if (cs->vp->v_type == VDIR) 9030 status = NFS4ERR_ISDIR; 9031 else 9032 status = NFS4ERR_INVAL; 9033 goto out; 9034 } 9035 9036 cp = lsp->rls_state->rs_owner->ro_client; 9037 9038 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9039 status = NFS4ERR_GRACE; 9040 goto out; 9041 } 9042 9043 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9044 status = NFS4ERR_NO_GRACE; 9045 goto out; 9046 } 9047 9048 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9049 status = NFS4ERR_NO_GRACE; 9050 goto out; 9051 } 9052 9053 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9054 cs->deleg = TRUE; 9055 9056 status = rfs4_do_lock(lsp, args->locktype, 9057 args->offset, args->length, cs->cr, resop); 9058 9059 out: 9060 lsp->rls_skip_seqid_check = FALSE; 9061 9062 *cs->statusp = resp->status = status; 9063 9064 if (status == NFS4_OK) { 9065 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9066 lsp->rls_lock_completed = TRUE; 9067 } 9068 /* 9069 * Only update the "OPEN" response here if this was a new 9070 * lock_owner 9071 */ 9072 if (sp) 9073 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9074 9075 rfs4_update_lock_resp(lsp, resop); 9076 9077 end: 9078 if (lsp) { 9079 if (ls_sw_held) 9080 rfs4_sw_exit(&lsp->rls_sw); 9081 /* 9082 * If an sp obtained, then the lsp does not represent 9083 * a lock on the file struct. 9084 */ 9085 if (sp != NULL) 9086 rfs4_lo_state_rele(lsp, FALSE); 9087 else 9088 rfs4_lo_state_rele(lsp, TRUE); 9089 } 9090 if (sp) { 9091 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9092 rfs4_state_rele(sp); 9093 } 9094 9095 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9096 LOCK4res *, resp); 9097 } 9098 9099 /* free function for LOCK/LOCKT */ 9100 static void 9101 lock_denied_free(nfs_resop4 *resop) 9102 { 9103 LOCK4denied *dp = NULL; 9104 9105 switch (resop->resop) { 9106 case OP_LOCK: 9107 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9108 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9109 break; 9110 case OP_LOCKT: 9111 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9112 dp = &resop->nfs_resop4_u.oplockt.denied; 9113 break; 9114 default: 9115 break; 9116 } 9117 9118 if (dp) 9119 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9120 } 9121 9122 /*ARGSUSED*/ 9123 void 9124 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9125 struct svc_req *req, struct compound_state *cs) 9126 { 9127 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9128 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9129 nfsstat4 status; 9130 stateid4 *stateid = &args->lock_stateid; 9131 rfs4_lo_state_t *lsp; 9132 9133 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9134 LOCKU4args *, args); 9135 9136 if (cs->vp == NULL) { 9137 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9138 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9139 LOCKU4res *, resp); 9140 return; 9141 } 9142 9143 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9144 *cs->statusp = resp->status = status; 9145 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9146 LOCKU4res *, resp); 9147 return; 9148 } 9149 9150 /* Ensure specified filehandle matches */ 9151 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9152 rfs4_lo_state_rele(lsp, TRUE); 9153 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9154 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9155 LOCKU4res *, resp); 9156 return; 9157 } 9158 9159 /* hold off other access to lsp while we tinker */ 9160 rfs4_sw_enter(&lsp->rls_sw); 9161 9162 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9163 case NFS4_CHECK_STATEID_OKAY: 9164 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9165 != NFS4_CHKSEQ_OKAY) { 9166 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9167 goto end; 9168 } 9169 break; 9170 case NFS4_CHECK_STATEID_OLD: 9171 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9172 goto end; 9173 case NFS4_CHECK_STATEID_BAD: 9174 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9175 goto end; 9176 case NFS4_CHECK_STATEID_EXPIRED: 9177 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9178 goto end; 9179 case NFS4_CHECK_STATEID_CLOSED: 9180 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9181 goto end; 9182 case NFS4_CHECK_STATEID_REPLAY: 9183 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9184 case NFS4_CHKSEQ_OKAY: 9185 /* 9186 * This is a replayed stateid; if 9187 * seqid matches the next expected, 9188 * then client is using wrong seqid. 9189 */ 9190 case NFS4_CHKSEQ_BAD: 9191 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9192 goto end; 9193 case NFS4_CHKSEQ_REPLAY: 9194 rfs4_update_lease(lsp->rls_locker->rl_client); 9195 *cs->statusp = status = resp->status; 9196 goto end; 9197 } 9198 break; 9199 default: 9200 ASSERT(FALSE); 9201 break; 9202 } 9203 9204 rfs4_update_lock_sequence(lsp); 9205 rfs4_update_lease(lsp->rls_locker->rl_client); 9206 9207 /* 9208 * NFS4 only allows locking on regular files, so 9209 * verify type of object. 9210 */ 9211 if (cs->vp->v_type != VREG) { 9212 if (cs->vp->v_type == VDIR) 9213 status = NFS4ERR_ISDIR; 9214 else 9215 status = NFS4ERR_INVAL; 9216 goto out; 9217 } 9218 9219 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9220 status = NFS4ERR_GRACE; 9221 goto out; 9222 } 9223 9224 status = rfs4_do_lock(lsp, args->locktype, 9225 args->offset, args->length, cs->cr, resop); 9226 9227 out: 9228 *cs->statusp = resp->status = status; 9229 9230 if (status == NFS4_OK) 9231 resp->lock_stateid = lsp->rls_lockid.stateid; 9232 9233 rfs4_update_lock_resp(lsp, resop); 9234 9235 end: 9236 rfs4_sw_exit(&lsp->rls_sw); 9237 rfs4_lo_state_rele(lsp, TRUE); 9238 9239 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9240 LOCKU4res *, resp); 9241 } 9242 9243 /* 9244 * LOCKT is a best effort routine, the client can not be guaranteed that 9245 * the status return is still in effect by the time the reply is received. 9246 * They are numerous race conditions in this routine, but we are not required 9247 * and can not be accurate. 9248 */ 9249 /*ARGSUSED*/ 9250 void 9251 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9252 struct svc_req *req, struct compound_state *cs) 9253 { 9254 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9255 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9256 rfs4_lockowner_t *lo; 9257 rfs4_client_t *cp; 9258 bool_t create = FALSE; 9259 struct flock64 flk; 9260 int error; 9261 int flag = FREAD | FWRITE; 9262 int ltype; 9263 length4 posix_length; 9264 sysid_t sysid; 9265 pid_t pid; 9266 9267 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9268 LOCKT4args *, args); 9269 9270 if (cs->vp == NULL) { 9271 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9272 goto out; 9273 } 9274 9275 /* 9276 * NFS4 only allows locking on regular files, so 9277 * verify type of object. 9278 */ 9279 if (cs->vp->v_type != VREG) { 9280 if (cs->vp->v_type == VDIR) 9281 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9282 else 9283 *cs->statusp = resp->status = NFS4ERR_INVAL; 9284 goto out; 9285 } 9286 9287 /* 9288 * Check out the clientid to ensure the server knows about it 9289 * so that we correctly inform the client of a server reboot. 9290 */ 9291 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9292 == NULL) { 9293 *cs->statusp = resp->status = 9294 rfs4_check_clientid(&args->owner.clientid, 0); 9295 goto out; 9296 } 9297 if (rfs4_lease_expired(cp)) { 9298 rfs4_client_close(cp); 9299 /* 9300 * Protocol doesn't allow returning NFS4ERR_STALE as 9301 * other operations do on this check so STALE_CLIENTID 9302 * is returned instead 9303 */ 9304 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9305 goto out; 9306 } 9307 9308 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9309 *cs->statusp = resp->status = NFS4ERR_GRACE; 9310 rfs4_client_rele(cp); 9311 goto out; 9312 } 9313 rfs4_client_rele(cp); 9314 9315 resp->status = NFS4_OK; 9316 9317 switch (args->locktype) { 9318 case READ_LT: 9319 case READW_LT: 9320 ltype = F_RDLCK; 9321 break; 9322 case WRITE_LT: 9323 case WRITEW_LT: 9324 ltype = F_WRLCK; 9325 break; 9326 } 9327 9328 posix_length = args->length; 9329 /* Check for zero length. To lock to end of file use all ones for V4 */ 9330 if (posix_length == 0) { 9331 *cs->statusp = resp->status = NFS4ERR_INVAL; 9332 goto out; 9333 } else if (posix_length == (length4)(~0)) { 9334 posix_length = 0; /* Posix to end of file */ 9335 } 9336 9337 /* Find or create a lockowner */ 9338 lo = rfs4_findlockowner(&args->owner, &create); 9339 9340 if (lo) { 9341 pid = lo->rl_pid; 9342 if ((resp->status = 9343 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9344 goto err; 9345 } else { 9346 pid = 0; 9347 sysid = lockt_sysid; 9348 } 9349 retry: 9350 flk.l_type = ltype; 9351 flk.l_whence = 0; /* SEEK_SET */ 9352 flk.l_start = args->offset; 9353 flk.l_len = posix_length; 9354 flk.l_sysid = sysid; 9355 flk.l_pid = pid; 9356 flag |= F_REMOTELOCK; 9357 9358 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9359 9360 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9361 if (flk.l_len < 0 || flk.l_start < 0) { 9362 resp->status = NFS4ERR_INVAL; 9363 goto err; 9364 } 9365 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9366 NULL, cs->cr, NULL); 9367 9368 /* 9369 * N.B. We map error values to nfsv4 errors. This is differrent 9370 * than puterrno4 routine. 9371 */ 9372 switch (error) { 9373 case 0: 9374 if (flk.l_type == F_UNLCK) 9375 resp->status = NFS4_OK; 9376 else { 9377 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9378 goto retry; 9379 resp->status = NFS4ERR_DENIED; 9380 } 9381 break; 9382 case EOVERFLOW: 9383 resp->status = NFS4ERR_INVAL; 9384 break; 9385 case EINVAL: 9386 resp->status = NFS4ERR_NOTSUPP; 9387 break; 9388 default: 9389 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9390 error); 9391 resp->status = NFS4ERR_SERVERFAULT; 9392 break; 9393 } 9394 9395 err: 9396 if (lo) 9397 rfs4_lockowner_rele(lo); 9398 *cs->statusp = resp->status; 9399 out: 9400 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9401 LOCKT4res *, resp); 9402 } 9403 9404 int 9405 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9406 { 9407 int err; 9408 int cmd; 9409 vnode_t *vp; 9410 struct shrlock shr; 9411 struct shr_locowner shr_loco; 9412 int fflags = 0; 9413 9414 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9415 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9416 9417 if (sp->rs_closed) 9418 return (NFS4ERR_OLD_STATEID); 9419 9420 vp = sp->rs_finfo->rf_vp; 9421 ASSERT(vp); 9422 9423 shr.s_access = shr.s_deny = 0; 9424 9425 if (access & OPEN4_SHARE_ACCESS_READ) { 9426 fflags |= FREAD; 9427 shr.s_access |= F_RDACC; 9428 } 9429 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9430 fflags |= FWRITE; 9431 shr.s_access |= F_WRACC; 9432 } 9433 ASSERT(shr.s_access); 9434 9435 if (deny & OPEN4_SHARE_DENY_READ) 9436 shr.s_deny |= F_RDDNY; 9437 if (deny & OPEN4_SHARE_DENY_WRITE) 9438 shr.s_deny |= F_WRDNY; 9439 9440 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9441 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9442 shr_loco.sl_pid = shr.s_pid; 9443 shr_loco.sl_id = shr.s_sysid; 9444 shr.s_owner = (caddr_t)&shr_loco; 9445 shr.s_own_len = sizeof (shr_loco); 9446 9447 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9448 9449 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9450 if (err != 0) { 9451 if (err == EAGAIN) 9452 err = NFS4ERR_SHARE_DENIED; 9453 else 9454 err = puterrno4(err); 9455 return (err); 9456 } 9457 9458 sp->rs_share_access |= access; 9459 sp->rs_share_deny |= deny; 9460 9461 return (0); 9462 } 9463 9464 int 9465 rfs4_unshare(rfs4_state_t *sp) 9466 { 9467 int err; 9468 struct shrlock shr; 9469 struct shr_locowner shr_loco; 9470 9471 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9472 9473 if (sp->rs_closed || sp->rs_share_access == 0) 9474 return (0); 9475 9476 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9477 ASSERT(sp->rs_finfo->rf_vp); 9478 9479 shr.s_access = shr.s_deny = 0; 9480 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9481 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9482 shr_loco.sl_pid = shr.s_pid; 9483 shr_loco.sl_id = shr.s_sysid; 9484 shr.s_owner = (caddr_t)&shr_loco; 9485 shr.s_own_len = sizeof (shr_loco); 9486 9487 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9488 NULL); 9489 if (err != 0) { 9490 err = puterrno4(err); 9491 return (err); 9492 } 9493 9494 sp->rs_share_access = 0; 9495 sp->rs_share_deny = 0; 9496 9497 return (0); 9498 9499 } 9500 9501 static int 9502 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9503 { 9504 struct clist *wcl; 9505 count4 count = rok->data_len; 9506 int wlist_len; 9507 9508 wcl = args->wlist; 9509 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9510 return (FALSE); 9511 } 9512 wcl = args->wlist; 9513 rok->wlist_len = wlist_len; 9514 rok->wlist = wcl; 9515 return (TRUE); 9516 } 9517 9518 /* tunable to disable server referrals */ 9519 int rfs4_no_referrals = 0; 9520 9521 /* 9522 * Find an NFS record in reparse point data. 9523 * Returns 0 for success and <0 or an errno value on failure. 9524 */ 9525 int 9526 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9527 { 9528 int err; 9529 char *stype, *val; 9530 nvlist_t *nvl; 9531 nvpair_t *curr; 9532 9533 if ((nvl = reparse_init()) == NULL) 9534 return (-1); 9535 9536 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9537 reparse_free(nvl); 9538 return (err); 9539 } 9540 9541 curr = NULL; 9542 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9543 if ((stype = nvpair_name(curr)) == NULL) { 9544 reparse_free(nvl); 9545 return (-2); 9546 } 9547 if (strncasecmp(stype, "NFS", 3) == 0) 9548 break; 9549 } 9550 9551 if ((curr == NULL) || 9552 (nvpair_value_string(curr, &val))) { 9553 reparse_free(nvl); 9554 return (-3); 9555 } 9556 *nvlp = nvl; 9557 *svcp = stype; 9558 *datap = val; 9559 return (0); 9560 } 9561 9562 int 9563 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9564 { 9565 nvlist_t *nvl; 9566 char *s, *d; 9567 9568 if (rfs4_no_referrals != 0) 9569 return (B_FALSE); 9570 9571 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9572 return (B_FALSE); 9573 9574 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9575 return (B_FALSE); 9576 9577 reparse_free(nvl); 9578 9579 return (B_TRUE); 9580 } 9581 9582 /* 9583 * There is a user-level copy of this routine in ref_subr.c. 9584 * Changes should be kept in sync. 9585 */ 9586 static int 9587 nfs4_create_components(char *path, component4 *comp4) 9588 { 9589 int slen, plen, ncomp; 9590 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9591 9592 if (path == NULL) 9593 return (0); 9594 9595 plen = strlen(path) + 1; /* include the terminator */ 9596 ori_path = path; 9597 ncomp = 0; 9598 9599 /* count number of components in the path */ 9600 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9601 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9602 if ((slen = nxtc - path) == 0) { 9603 path = nxtc + 1; 9604 continue; 9605 } 9606 9607 if (comp4 != NULL) { 9608 bcopy(path, buf, slen); 9609 buf[slen] = '\0'; 9610 (void) str_to_utf8(buf, &comp4[ncomp]); 9611 } 9612 9613 ncomp++; /* 1 valid component */ 9614 path = nxtc + 1; 9615 } 9616 if (*nxtc == '\0' || *nxtc == '\n') 9617 break; 9618 } 9619 9620 return (ncomp); 9621 } 9622 9623 /* 9624 * There is a user-level copy of this routine in ref_subr.c. 9625 * Changes should be kept in sync. 9626 */ 9627 static int 9628 make_pathname4(char *path, pathname4 *pathname) 9629 { 9630 int ncomp; 9631 component4 *comp4; 9632 9633 if (pathname == NULL) 9634 return (0); 9635 9636 if (path == NULL) { 9637 pathname->pathname4_val = NULL; 9638 pathname->pathname4_len = 0; 9639 return (0); 9640 } 9641 9642 /* count number of components to alloc buffer */ 9643 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9644 pathname->pathname4_val = NULL; 9645 pathname->pathname4_len = 0; 9646 return (0); 9647 } 9648 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9649 9650 /* copy components into allocated buffer */ 9651 ncomp = nfs4_create_components(path, comp4); 9652 9653 pathname->pathname4_val = comp4; 9654 pathname->pathname4_len = ncomp; 9655 9656 return (ncomp); 9657 } 9658 9659 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9660 9661 fs_locations4 * 9662 fetch_referral(vnode_t *vp, cred_t *cr) 9663 { 9664 nvlist_t *nvl; 9665 char *stype, *sdata; 9666 fs_locations4 *result; 9667 char buf[1024]; 9668 size_t bufsize; 9669 XDR xdr; 9670 int err; 9671 9672 /* 9673 * Check attrs to ensure it's a reparse point 9674 */ 9675 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9676 return (NULL); 9677 9678 /* 9679 * Look for an NFS record and get the type and data 9680 */ 9681 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9682 return (NULL); 9683 9684 /* 9685 * With the type and data, upcall to get the referral 9686 */ 9687 bufsize = sizeof (buf); 9688 bzero(buf, sizeof (buf)); 9689 err = reparse_kderef((const char *)stype, (const char *)sdata, 9690 buf, &bufsize); 9691 reparse_free(nvl); 9692 9693 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9694 char *, stype, char *, sdata, char *, buf, int, err); 9695 if (err) { 9696 cmn_err(CE_NOTE, 9697 "reparsed daemon not running: unable to get referral (%d)", 9698 err); 9699 return (NULL); 9700 } 9701 9702 /* 9703 * We get an XDR'ed record back from the kderef call 9704 */ 9705 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9706 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9707 err = xdr_fs_locations4(&xdr, result); 9708 XDR_DESTROY(&xdr); 9709 if (err != TRUE) { 9710 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9711 int, err); 9712 return (NULL); 9713 } 9714 9715 /* 9716 * Look at path to recover fs_root, ignoring the leading '/' 9717 */ 9718 (void) make_pathname4(vp->v_path, &result->fs_root); 9719 9720 return (result); 9721 } 9722 9723 char * 9724 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9725 { 9726 fs_locations4 *fsl; 9727 fs_location4 *fs; 9728 char *server, *path, *symbuf; 9729 static char *prefix = "/net/"; 9730 int i, size, npaths; 9731 uint_t len; 9732 9733 /* Get the referral */ 9734 if ((fsl = fetch_referral(vp, cr)) == NULL) 9735 return (NULL); 9736 9737 /* Deal with only the first location and first server */ 9738 fs = &fsl->locations_val[0]; 9739 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9740 if (server == NULL) { 9741 rfs4_free_fs_locations4(fsl); 9742 kmem_free(fsl, sizeof (fs_locations4)); 9743 return (NULL); 9744 } 9745 9746 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 9747 size = strlen(prefix) + len; 9748 for (i = 0; i < fs->rootpath.pathname4_len; i++) 9749 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 9750 9751 /* Allocate the symlink buffer and fill it */ 9752 symbuf = kmem_zalloc(size, KM_SLEEP); 9753 (void) strcat(symbuf, prefix); 9754 (void) strcat(symbuf, server); 9755 kmem_free(server, len); 9756 9757 npaths = 0; 9758 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 9759 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 9760 if (path == NULL) 9761 continue; 9762 (void) strcat(symbuf, "/"); 9763 (void) strcat(symbuf, path); 9764 npaths++; 9765 kmem_free(path, len); 9766 } 9767 9768 rfs4_free_fs_locations4(fsl); 9769 kmem_free(fsl, sizeof (fs_locations4)); 9770 9771 if (strsz != NULL) 9772 *strsz = size; 9773 return (symbuf); 9774 } 9775 9776 /* 9777 * Check to see if we have a downrev Solaris client, so that we 9778 * can send it a symlink instead of a referral. 9779 */ 9780 int 9781 client_is_downrev(struct svc_req *req) 9782 { 9783 struct sockaddr *ca; 9784 rfs4_clntip_t *ci; 9785 bool_t create = FALSE; 9786 int is_downrev; 9787 9788 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 9789 ASSERT(ca); 9790 ci = rfs4_find_clntip(ca, &create); 9791 if (ci == NULL) 9792 return (0); 9793 is_downrev = ci->ri_no_referrals; 9794 rfs4_dbe_rele(ci->ri_dbe); 9795 return (is_downrev); 9796 } 9797