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