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 /* 23 * Copyright 2015 Nexenta Systems, Inc. All rights reserved. 24 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 25 * Copyright (c) 2012 by Delphix. All rights reserved. 26 */ 27 28 /* 29 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. 30 * All Rights Reserved 31 */ 32 33 #include <sys/param.h> 34 #include <sys/types.h> 35 #include <sys/systm.h> 36 #include <sys/cred.h> 37 #include <sys/buf.h> 38 #include <sys/vfs.h> 39 #include <sys/vfs_opreg.h> 40 #include <sys/vnode.h> 41 #include <sys/uio.h> 42 #include <sys/errno.h> 43 #include <sys/sysmacros.h> 44 #include <sys/statvfs.h> 45 #include <sys/kmem.h> 46 #include <sys/dirent.h> 47 #include <sys/cmn_err.h> 48 #include <sys/debug.h> 49 #include <sys/systeminfo.h> 50 #include <sys/flock.h> 51 #include <sys/pathname.h> 52 #include <sys/nbmlock.h> 53 #include <sys/share.h> 54 #include <sys/atomic.h> 55 #include <sys/policy.h> 56 #include <sys/fem.h> 57 #include <sys/sdt.h> 58 #include <sys/ddi.h> 59 #include <sys/zone.h> 60 61 #include <fs/fs_reparse.h> 62 63 #include <rpc/types.h> 64 #include <rpc/auth.h> 65 #include <rpc/rpcsec_gss.h> 66 #include <rpc/svc.h> 67 68 #include <nfs/nfs.h> 69 #include <nfs/export.h> 70 #include <nfs/nfs_cmd.h> 71 #include <nfs/lm.h> 72 #include <nfs/nfs4.h> 73 74 #include <sys/strsubr.h> 75 #include <sys/strsun.h> 76 77 #include <inet/common.h> 78 #include <inet/ip.h> 79 #include <inet/ip6.h> 80 81 #include <sys/tsol/label.h> 82 #include <sys/tsol/tndb.h> 83 84 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 85 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 86 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 87 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 88 extern struct svc_ops rdma_svc_ops; 89 extern int nfs_loaned_buffers; 90 /* End of Tunables */ 91 92 static int rdma_setup_read_data4(READ4args *, READ4res *); 93 94 /* 95 * Used to bump the stateid4.seqid value and show changes in the stateid 96 */ 97 #define next_stateid(sp) (++(sp)->bits.chgseq) 98 99 /* 100 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 101 * This is used to return NFS4ERR_TOOSMALL when clients specify 102 * maxcount that isn't large enough to hold the smallest possible 103 * XDR encoded dirent. 104 * 105 * sizeof cookie (8 bytes) + 106 * sizeof name_len (4 bytes) + 107 * sizeof smallest (padded) name (4 bytes) + 108 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 109 * sizeof attrlist4_len (4 bytes) + 110 * sizeof next boolean (4 bytes) 111 * 112 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 113 * the smallest possible entry4 (assumes no attrs requested). 114 * sizeof nfsstat4 (4 bytes) + 115 * sizeof verifier4 (8 bytes) + 116 * sizeof entry4list bool (4 bytes) + 117 * sizeof entry4 (36 bytes) + 118 * sizeof eof bool (4 bytes) 119 * 120 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 121 * VOP_READDIR. Its value is the size of the maximum possible dirent 122 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 123 * required for a given name length. MAXNAMELEN is the maximum 124 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 125 * macros are to allow for . and .. entries -- just a minor tweak to try 126 * and guarantee that buffer we give to VOP_READDIR will be large enough 127 * to hold ., .., and the largest possible solaris dirent64. 128 */ 129 #define RFS4_MINLEN_ENTRY4 36 130 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 131 #define RFS4_MINLEN_RDDIR_BUF \ 132 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 133 134 /* 135 * It would be better to pad to 4 bytes since that's what XDR would do, 136 * but the dirents UFS gives us are already padded to 8, so just take 137 * what we're given. Dircount is only a hint anyway. Currently the 138 * solaris kernel is ASCII only, so there's no point in calling the 139 * UTF8 functions. 140 * 141 * dirent64: named padded to provide 8 byte struct alignment 142 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 143 * 144 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 145 * 146 */ 147 #define DIRENT64_TO_DIRCOUNT(dp) \ 148 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 149 150 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 151 152 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 153 154 u_longlong_t nfs4_srv_caller_id; 155 uint_t nfs4_srv_vkey = 0; 156 157 verifier4 Write4verf; 158 verifier4 Readdir4verf; 159 160 void rfs4_init_compound_state(struct compound_state *); 161 162 static void nullfree(caddr_t); 163 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 164 struct compound_state *); 165 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 166 struct compound_state *); 167 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 168 struct compound_state *); 169 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 170 struct compound_state *); 171 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 172 struct compound_state *); 173 static void rfs4_op_create_free(nfs_resop4 *resop); 174 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 175 struct svc_req *, struct compound_state *); 176 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 177 struct svc_req *, struct compound_state *); 178 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 179 struct compound_state *); 180 static void rfs4_op_getattr_free(nfs_resop4 *); 181 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 182 struct compound_state *); 183 static void rfs4_op_getfh_free(nfs_resop4 *); 184 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 185 struct compound_state *); 186 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 187 struct compound_state *); 188 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 189 struct compound_state *); 190 static void lock_denied_free(nfs_resop4 *); 191 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 192 struct compound_state *); 193 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 194 struct compound_state *); 195 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 196 struct compound_state *); 197 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 198 struct compound_state *); 199 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 200 struct svc_req *req, struct compound_state *cs); 201 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 202 struct compound_state *); 203 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 204 struct compound_state *); 205 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 206 struct svc_req *, struct compound_state *); 207 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 208 struct svc_req *, struct compound_state *); 209 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 210 struct compound_state *); 211 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 212 struct compound_state *); 213 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 214 struct compound_state *); 215 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 216 struct compound_state *); 217 static void rfs4_op_read_free(nfs_resop4 *); 218 static void rfs4_op_readdir_free(nfs_resop4 *resop); 219 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 220 struct compound_state *); 221 static void rfs4_op_readlink_free(nfs_resop4 *); 222 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 223 struct svc_req *, struct compound_state *); 224 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 225 struct compound_state *); 226 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 227 struct compound_state *); 228 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 229 struct compound_state *); 230 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 231 struct compound_state *); 232 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 233 struct compound_state *); 234 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 235 struct compound_state *); 236 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 237 struct compound_state *); 238 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 239 struct compound_state *); 240 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 241 struct svc_req *, struct compound_state *); 242 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 243 struct svc_req *req, struct compound_state *); 244 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 245 struct compound_state *); 246 static void rfs4_op_secinfo_free(nfs_resop4 *); 247 248 static nfsstat4 check_open_access(uint32_t, 249 struct compound_state *, struct svc_req *); 250 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 251 void rfs4_ss_clid(rfs4_client_t *); 252 253 /* 254 * translation table for attrs 255 */ 256 struct nfs4_ntov_table { 257 union nfs4_attr_u *na; 258 uint8_t amap[NFS4_MAXNUM_ATTRS]; 259 int attrcnt; 260 bool_t vfsstat; 261 }; 262 263 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 264 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 265 struct nfs4_svgetit_arg *sargp); 266 267 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 268 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 269 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 270 271 fem_t *deleg_rdops; 272 fem_t *deleg_wrops; 273 274 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 275 kmutex_t rfs4_servinst_lock; /* protects linked list */ 276 int rfs4_seen_first_compound; /* set first time we see one */ 277 278 /* 279 * NFS4 op dispatch table 280 */ 281 282 struct rfsv4disp { 283 void (*dis_proc)(); /* proc to call */ 284 void (*dis_resfree)(); /* frees space allocated by proc */ 285 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 286 }; 287 288 static struct rfsv4disp rfsv4disptab[] = { 289 /* 290 * NFS VERSION 4 291 */ 292 293 /* RFS_NULL = 0 */ 294 {rfs4_op_illegal, nullfree, 0}, 295 296 /* UNUSED = 1 */ 297 {rfs4_op_illegal, nullfree, 0}, 298 299 /* UNUSED = 2 */ 300 {rfs4_op_illegal, nullfree, 0}, 301 302 /* OP_ACCESS = 3 */ 303 {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, 304 305 /* OP_CLOSE = 4 */ 306 {rfs4_op_close, nullfree, 0}, 307 308 /* OP_COMMIT = 5 */ 309 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, 310 311 /* OP_CREATE = 6 */ 312 {rfs4_op_create, nullfree, 0}, 313 314 /* OP_DELEGPURGE = 7 */ 315 {rfs4_op_delegpurge, nullfree, 0}, 316 317 /* OP_DELEGRETURN = 8 */ 318 {rfs4_op_delegreturn, nullfree, 0}, 319 320 /* OP_GETATTR = 9 */ 321 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, 322 323 /* OP_GETFH = 10 */ 324 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, 325 326 /* OP_LINK = 11 */ 327 {rfs4_op_link, nullfree, 0}, 328 329 /* OP_LOCK = 12 */ 330 {rfs4_op_lock, lock_denied_free, 0}, 331 332 /* OP_LOCKT = 13 */ 333 {rfs4_op_lockt, lock_denied_free, 0}, 334 335 /* OP_LOCKU = 14 */ 336 {rfs4_op_locku, nullfree, 0}, 337 338 /* OP_LOOKUP = 15 */ 339 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 340 341 /* OP_LOOKUPP = 16 */ 342 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, 343 344 /* OP_NVERIFY = 17 */ 345 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, 346 347 /* OP_OPEN = 18 */ 348 {rfs4_op_open, rfs4_free_reply, 0}, 349 350 /* OP_OPENATTR = 19 */ 351 {rfs4_op_openattr, nullfree, 0}, 352 353 /* OP_OPEN_CONFIRM = 20 */ 354 {rfs4_op_open_confirm, nullfree, 0}, 355 356 /* OP_OPEN_DOWNGRADE = 21 */ 357 {rfs4_op_open_downgrade, nullfree, 0}, 358 359 /* OP_OPEN_PUTFH = 22 */ 360 {rfs4_op_putfh, nullfree, RPC_ALL}, 361 362 /* OP_PUTPUBFH = 23 */ 363 {rfs4_op_putpubfh, nullfree, RPC_ALL}, 364 365 /* OP_PUTROOTFH = 24 */ 366 {rfs4_op_putrootfh, nullfree, RPC_ALL}, 367 368 /* OP_READ = 25 */ 369 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, 370 371 /* OP_READDIR = 26 */ 372 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, 373 374 /* OP_READLINK = 27 */ 375 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, 376 377 /* OP_REMOVE = 28 */ 378 {rfs4_op_remove, nullfree, 0}, 379 380 /* OP_RENAME = 29 */ 381 {rfs4_op_rename, nullfree, 0}, 382 383 /* OP_RENEW = 30 */ 384 {rfs4_op_renew, nullfree, 0}, 385 386 /* OP_RESTOREFH = 31 */ 387 {rfs4_op_restorefh, nullfree, RPC_ALL}, 388 389 /* OP_SAVEFH = 32 */ 390 {rfs4_op_savefh, nullfree, RPC_ALL}, 391 392 /* OP_SECINFO = 33 */ 393 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, 394 395 /* OP_SETATTR = 34 */ 396 {rfs4_op_setattr, nullfree, 0}, 397 398 /* OP_SETCLIENTID = 35 */ 399 {rfs4_op_setclientid, nullfree, 0}, 400 401 /* OP_SETCLIENTID_CONFIRM = 36 */ 402 {rfs4_op_setclientid_confirm, nullfree, 0}, 403 404 /* OP_VERIFY = 37 */ 405 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, 406 407 /* OP_WRITE = 38 */ 408 {rfs4_op_write, nullfree, 0}, 409 410 /* OP_RELEASE_LOCKOWNER = 39 */ 411 {rfs4_op_release_lockowner, nullfree, 0}, 412 }; 413 414 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 415 416 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 417 418 #ifdef DEBUG 419 420 int rfs4_fillone_debug = 0; 421 int rfs4_no_stub_access = 1; 422 int rfs4_rddir_debug = 0; 423 424 static char *rfs4_op_string[] = { 425 "rfs4_op_null", 426 "rfs4_op_1 unused", 427 "rfs4_op_2 unused", 428 "rfs4_op_access", 429 "rfs4_op_close", 430 "rfs4_op_commit", 431 "rfs4_op_create", 432 "rfs4_op_delegpurge", 433 "rfs4_op_delegreturn", 434 "rfs4_op_getattr", 435 "rfs4_op_getfh", 436 "rfs4_op_link", 437 "rfs4_op_lock", 438 "rfs4_op_lockt", 439 "rfs4_op_locku", 440 "rfs4_op_lookup", 441 "rfs4_op_lookupp", 442 "rfs4_op_nverify", 443 "rfs4_op_open", 444 "rfs4_op_openattr", 445 "rfs4_op_open_confirm", 446 "rfs4_op_open_downgrade", 447 "rfs4_op_putfh", 448 "rfs4_op_putpubfh", 449 "rfs4_op_putrootfh", 450 "rfs4_op_read", 451 "rfs4_op_readdir", 452 "rfs4_op_readlink", 453 "rfs4_op_remove", 454 "rfs4_op_rename", 455 "rfs4_op_renew", 456 "rfs4_op_restorefh", 457 "rfs4_op_savefh", 458 "rfs4_op_secinfo", 459 "rfs4_op_setattr", 460 "rfs4_op_setclientid", 461 "rfs4_op_setclient_confirm", 462 "rfs4_op_verify", 463 "rfs4_op_write", 464 "rfs4_op_release_lockowner", 465 "rfs4_op_illegal" 466 }; 467 #endif 468 469 void rfs4_ss_chkclid(rfs4_client_t *); 470 471 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 472 473 extern void rfs4_free_fs_locations4(fs_locations4 *); 474 475 #ifdef nextdp 476 #undef nextdp 477 #endif 478 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 479 480 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 481 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 482 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 483 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 484 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 485 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 486 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 487 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 488 NULL, NULL 489 }; 490 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 491 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 492 VOPNAME_READ, { .femop_read = deleg_wr_read }, 493 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 494 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 495 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 496 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 497 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 498 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 499 NULL, NULL 500 }; 501 502 int 503 rfs4_srvrinit(void) 504 { 505 timespec32_t verf; 506 int error; 507 extern void rfs4_attr_init(); 508 extern krwlock_t rfs4_deleg_policy_lock; 509 510 /* 511 * The following algorithm attempts to find a unique verifier 512 * to be used as the write verifier returned from the server 513 * to the client. It is important that this verifier change 514 * whenever the server reboots. Of secondary importance, it 515 * is important for the verifier to be unique between two 516 * different servers. 517 * 518 * Thus, an attempt is made to use the system hostid and the 519 * current time in seconds when the nfssrv kernel module is 520 * loaded. It is assumed that an NFS server will not be able 521 * to boot and then to reboot in less than a second. If the 522 * hostid has not been set, then the current high resolution 523 * time is used. This will ensure different verifiers each 524 * time the server reboots and minimize the chances that two 525 * different servers will have the same verifier. 526 * XXX - this is broken on LP64 kernels. 527 */ 528 verf.tv_sec = (time_t)zone_get_hostid(NULL); 529 if (verf.tv_sec != 0) { 530 verf.tv_nsec = gethrestime_sec(); 531 } else { 532 timespec_t tverf; 533 534 gethrestime(&tverf); 535 verf.tv_sec = (time_t)tverf.tv_sec; 536 verf.tv_nsec = tverf.tv_nsec; 537 } 538 539 Write4verf = *(uint64_t *)&verf; 540 541 rfs4_attr_init(); 542 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 543 544 /* Used to manage create/destroy of server state */ 545 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 546 547 /* Used to manage access to server instance linked list */ 548 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 549 550 /* Used to manage access to rfs4_deleg_policy */ 551 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 552 553 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 554 if (error != 0) { 555 rfs4_disable_delegation(); 556 } else { 557 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 558 &deleg_wrops); 559 if (error != 0) { 560 rfs4_disable_delegation(); 561 fem_free(deleg_rdops); 562 } 563 } 564 565 nfs4_srv_caller_id = fs_new_caller_id(); 566 567 lockt_sysid = lm_alloc_sysidt(); 568 569 vsd_create(&nfs4_srv_vkey, NULL); 570 571 return (0); 572 } 573 574 void 575 rfs4_srvrfini(void) 576 { 577 extern krwlock_t rfs4_deleg_policy_lock; 578 579 if (lockt_sysid != LM_NOSYSID) { 580 lm_free_sysidt(lockt_sysid); 581 lockt_sysid = LM_NOSYSID; 582 } 583 584 mutex_destroy(&rfs4_deleg_lock); 585 mutex_destroy(&rfs4_state_lock); 586 rw_destroy(&rfs4_deleg_policy_lock); 587 588 fem_free(deleg_rdops); 589 fem_free(deleg_wrops); 590 } 591 592 void 593 rfs4_init_compound_state(struct compound_state *cs) 594 { 595 bzero(cs, sizeof (*cs)); 596 cs->cont = TRUE; 597 cs->access = CS_ACCESS_DENIED; 598 cs->deleg = FALSE; 599 cs->mandlock = FALSE; 600 cs->fh.nfs_fh4_val = cs->fhbuf; 601 } 602 603 void 604 rfs4_grace_start(rfs4_servinst_t *sip) 605 { 606 rw_enter(&sip->rwlock, RW_WRITER); 607 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); 608 sip->grace_period = rfs4_grace_period; 609 rw_exit(&sip->rwlock); 610 } 611 612 /* 613 * returns true if the instance's grace period has never been started 614 */ 615 int 616 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 617 { 618 time_t start_time; 619 620 rw_enter(&sip->rwlock, RW_READER); 621 start_time = sip->start_time; 622 rw_exit(&sip->rwlock); 623 624 return (start_time == 0); 625 } 626 627 /* 628 * Indicates if server instance is within the 629 * grace period. 630 */ 631 int 632 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 633 { 634 time_t grace_expiry; 635 636 rw_enter(&sip->rwlock, RW_READER); 637 grace_expiry = sip->start_time + sip->grace_period; 638 rw_exit(&sip->rwlock); 639 640 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); 641 } 642 643 int 644 rfs4_clnt_in_grace(rfs4_client_t *cp) 645 { 646 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 647 648 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 649 } 650 651 /* 652 * reset all currently active grace periods 653 */ 654 void 655 rfs4_grace_reset_all(void) 656 { 657 rfs4_servinst_t *sip; 658 659 mutex_enter(&rfs4_servinst_lock); 660 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 661 if (rfs4_servinst_in_grace(sip)) 662 rfs4_grace_start(sip); 663 mutex_exit(&rfs4_servinst_lock); 664 } 665 666 /* 667 * start any new instances' grace periods 668 */ 669 void 670 rfs4_grace_start_new(void) 671 { 672 rfs4_servinst_t *sip; 673 674 mutex_enter(&rfs4_servinst_lock); 675 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 676 if (rfs4_servinst_grace_new(sip)) 677 rfs4_grace_start(sip); 678 mutex_exit(&rfs4_servinst_lock); 679 } 680 681 static rfs4_dss_path_t * 682 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 683 { 684 size_t len; 685 rfs4_dss_path_t *dss_path; 686 687 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 688 689 /* 690 * Take a copy of the string, since the original may be overwritten. 691 * Sadly, no strdup() in the kernel. 692 */ 693 /* allow for NUL */ 694 len = strlen(path) + 1; 695 dss_path->path = kmem_alloc(len, KM_SLEEP); 696 (void) strlcpy(dss_path->path, path, len); 697 698 /* associate with servinst */ 699 dss_path->sip = sip; 700 dss_path->index = index; 701 702 /* 703 * Add to list of served paths. 704 * No locking required, as we're only ever called at startup. 705 */ 706 if (rfs4_dss_pathlist == NULL) { 707 /* this is the first dss_path_t */ 708 709 /* needed for insque/remque */ 710 dss_path->next = dss_path->prev = dss_path; 711 712 rfs4_dss_pathlist = dss_path; 713 } else { 714 insque(dss_path, rfs4_dss_pathlist); 715 } 716 717 return (dss_path); 718 } 719 720 /* 721 * Create a new server instance, and make it the currently active instance. 722 * Note that starting the grace period too early will reduce the clients' 723 * recovery window. 724 */ 725 void 726 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 727 { 728 unsigned i; 729 rfs4_servinst_t *sip; 730 rfs4_oldstate_t *oldstate; 731 732 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 733 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 734 735 sip->start_time = (time_t)0; 736 sip->grace_period = (time_t)0; 737 sip->next = NULL; 738 sip->prev = NULL; 739 740 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 741 /* 742 * This initial dummy entry is required to setup for insque/remque. 743 * It must be skipped over whenever the list is traversed. 744 */ 745 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 746 /* insque/remque require initial list entry to be self-terminated */ 747 oldstate->next = oldstate; 748 oldstate->prev = oldstate; 749 sip->oldstate = oldstate; 750 751 752 sip->dss_npaths = dss_npaths; 753 sip->dss_paths = kmem_alloc(dss_npaths * 754 sizeof (rfs4_dss_path_t *), KM_SLEEP); 755 756 for (i = 0; i < dss_npaths; i++) { 757 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 758 } 759 760 mutex_enter(&rfs4_servinst_lock); 761 if (rfs4_cur_servinst != NULL) { 762 /* add to linked list */ 763 sip->prev = rfs4_cur_servinst; 764 rfs4_cur_servinst->next = sip; 765 } 766 if (start_grace) 767 rfs4_grace_start(sip); 768 /* make the new instance "current" */ 769 rfs4_cur_servinst = sip; 770 771 mutex_exit(&rfs4_servinst_lock); 772 } 773 774 /* 775 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 776 * all instances directly. 777 */ 778 void 779 rfs4_servinst_destroy_all(void) 780 { 781 rfs4_servinst_t *sip, *prev, *current; 782 #ifdef DEBUG 783 int n = 0; 784 #endif 785 786 mutex_enter(&rfs4_servinst_lock); 787 ASSERT(rfs4_cur_servinst != NULL); 788 current = rfs4_cur_servinst; 789 rfs4_cur_servinst = NULL; 790 for (sip = current; sip != NULL; sip = prev) { 791 prev = sip->prev; 792 rw_destroy(&sip->rwlock); 793 if (sip->oldstate) 794 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 795 if (sip->dss_paths) 796 kmem_free(sip->dss_paths, 797 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 798 kmem_free(sip, sizeof (rfs4_servinst_t)); 799 #ifdef DEBUG 800 n++; 801 #endif 802 } 803 mutex_exit(&rfs4_servinst_lock); 804 } 805 806 /* 807 * Assign the current server instance to a client_t. 808 * Should be called with cp->rc_dbe held. 809 */ 810 void 811 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 812 { 813 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 814 815 /* 816 * The lock ensures that if the current instance is in the process 817 * of changing, we will see the new one. 818 */ 819 mutex_enter(&rfs4_servinst_lock); 820 cp->rc_server_instance = sip; 821 mutex_exit(&rfs4_servinst_lock); 822 } 823 824 rfs4_servinst_t * 825 rfs4_servinst(rfs4_client_t *cp) 826 { 827 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 828 829 return (cp->rc_server_instance); 830 } 831 832 /* ARGSUSED */ 833 static void 834 nullfree(caddr_t resop) 835 { 836 } 837 838 /* 839 * This is a fall-through for invalid or not implemented (yet) ops 840 */ 841 /* ARGSUSED */ 842 static void 843 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 844 struct compound_state *cs) 845 { 846 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 847 } 848 849 /* 850 * Check if the security flavor, nfsnum, is in the flavor_list. 851 */ 852 bool_t 853 in_flavor_list(int nfsnum, int *flavor_list, int count) 854 { 855 int i; 856 857 for (i = 0; i < count; i++) { 858 if (nfsnum == flavor_list[i]) 859 return (TRUE); 860 } 861 return (FALSE); 862 } 863 864 /* 865 * Used by rfs4_op_secinfo to get the security information from the 866 * export structure associated with the component. 867 */ 868 /* ARGSUSED */ 869 static nfsstat4 870 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 871 { 872 int error, different_export = 0; 873 vnode_t *dvp, *vp; 874 struct exportinfo *exi = NULL; 875 fid_t fid; 876 uint_t count, i; 877 secinfo4 *resok_val; 878 struct secinfo *secp; 879 seconfig_t *si; 880 bool_t did_traverse = FALSE; 881 int dotdot, walk; 882 883 dvp = cs->vp; 884 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 885 886 /* 887 * If dotdotting, then need to check whether it's above the 888 * root of a filesystem, or above an export point. 889 */ 890 if (dotdot) { 891 892 /* 893 * If dotdotting at the root of a filesystem, then 894 * need to traverse back to the mounted-on filesystem 895 * and do the dotdot lookup there. 896 */ 897 if (cs->vp->v_flag & VROOT) { 898 899 /* 900 * If at the system root, then can 901 * go up no further. 902 */ 903 if (VN_CMP(dvp, rootdir)) 904 return (puterrno4(ENOENT)); 905 906 /* 907 * Traverse back to the mounted-on filesystem 908 */ 909 dvp = untraverse(cs->vp); 910 911 /* 912 * Set the different_export flag so we remember 913 * to pick up a new exportinfo entry for 914 * this new filesystem. 915 */ 916 different_export = 1; 917 } else { 918 919 /* 920 * If dotdotting above an export point then set 921 * the different_export to get new export info. 922 */ 923 different_export = nfs_exported(cs->exi, cs->vp); 924 } 925 } 926 927 /* 928 * Get the vnode for the component "nm". 929 */ 930 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 931 NULL, NULL, NULL); 932 if (error) 933 return (puterrno4(error)); 934 935 /* 936 * If the vnode is in a pseudo filesystem, or if the security flavor 937 * used in the request is valid but not an explicitly shared flavor, 938 * or the access bit indicates that this is a limited access, 939 * check whether this vnode is visible. 940 */ 941 if (!different_export && 942 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 943 cs->access & CS_ACCESS_LIMITED)) { 944 if (! nfs_visible(cs->exi, vp, &different_export)) { 945 VN_RELE(vp); 946 return (puterrno4(ENOENT)); 947 } 948 } 949 950 /* 951 * If it's a mountpoint, then traverse it. 952 */ 953 if (vn_ismntpt(vp)) { 954 if ((error = traverse(&vp)) != 0) { 955 VN_RELE(vp); 956 return (puterrno4(error)); 957 } 958 /* remember that we had to traverse mountpoint */ 959 did_traverse = TRUE; 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 } 972 973 /* 974 * Get the export information for it. 975 */ 976 if (different_export) { 977 978 bzero(&fid, sizeof (fid)); 979 fid.fid_len = MAXFIDSZ; 980 error = vop_fid_pseudo(vp, &fid); 981 if (error) { 982 VN_RELE(vp); 983 return (puterrno4(error)); 984 } 985 986 if (dotdot) 987 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 988 else 989 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 990 991 if (exi == NULL) { 992 if (did_traverse == TRUE) { 993 /* 994 * If this vnode is a mounted-on vnode, 995 * but the mounted-on file system is not 996 * exported, send back the secinfo for 997 * the exported node that the mounted-on 998 * vnode lives in. 999 */ 1000 exi = cs->exi; 1001 } else { 1002 VN_RELE(vp); 1003 return (puterrno4(EACCES)); 1004 } 1005 } 1006 } else { 1007 exi = cs->exi; 1008 } 1009 ASSERT(exi != NULL); 1010 1011 1012 /* 1013 * Create the secinfo result based on the security information 1014 * from the exportinfo structure (exi). 1015 * 1016 * Return all flavors for a pseudo node. 1017 * For a real export node, return the flavor that the client 1018 * has access with. 1019 */ 1020 ASSERT(RW_LOCK_HELD(&exported_lock)); 1021 if (PSEUDO(exi)) { 1022 count = exi->exi_export.ex_seccnt; /* total sec count */ 1023 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1024 secp = exi->exi_export.ex_secinfo; 1025 1026 for (i = 0; i < count; i++) { 1027 si = &secp[i].s_secinfo; 1028 resok_val[i].flavor = si->sc_rpcnum; 1029 if (resok_val[i].flavor == RPCSEC_GSS) { 1030 rpcsec_gss_info *info; 1031 1032 info = &resok_val[i].flavor_info; 1033 info->qop = si->sc_qop; 1034 info->service = (rpc_gss_svc_t)si->sc_service; 1035 1036 /* get oid opaque data */ 1037 info->oid.sec_oid4_len = 1038 si->sc_gss_mech_type->length; 1039 info->oid.sec_oid4_val = kmem_alloc( 1040 si->sc_gss_mech_type->length, KM_SLEEP); 1041 bcopy( 1042 si->sc_gss_mech_type->elements, 1043 info->oid.sec_oid4_val, 1044 info->oid.sec_oid4_len); 1045 } 1046 } 1047 resp->SECINFO4resok_len = count; 1048 resp->SECINFO4resok_val = resok_val; 1049 } else { 1050 int ret_cnt = 0, k = 0; 1051 int *flavor_list; 1052 1053 count = exi->exi_export.ex_seccnt; /* total sec count */ 1054 secp = exi->exi_export.ex_secinfo; 1055 1056 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1057 /* find out which flavors to return */ 1058 for (i = 0; i < count; i ++) { 1059 int access, flavor, perm; 1060 1061 flavor = secp[i].s_secinfo.sc_nfsnum; 1062 perm = secp[i].s_flags; 1063 1064 access = nfsauth4_secinfo_access(exi, cs->req, 1065 flavor, perm, cs->basecr); 1066 1067 if (! (access & NFSAUTH_DENIED) && 1068 ! (access & NFSAUTH_WRONGSEC)) { 1069 flavor_list[ret_cnt] = flavor; 1070 ret_cnt++; 1071 } 1072 } 1073 1074 /* Create the returning SECINFO value */ 1075 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1076 1077 for (i = 0; i < count; i++) { 1078 /* 1079 * If the flavor is in the flavor list, 1080 * fill in resok_val. 1081 */ 1082 si = &secp[i].s_secinfo; 1083 if (in_flavor_list(si->sc_nfsnum, 1084 flavor_list, ret_cnt)) { 1085 resok_val[k].flavor = si->sc_rpcnum; 1086 if (resok_val[k].flavor == RPCSEC_GSS) { 1087 rpcsec_gss_info *info; 1088 1089 info = &resok_val[k].flavor_info; 1090 info->qop = si->sc_qop; 1091 info->service = (rpc_gss_svc_t) 1092 si->sc_service; 1093 1094 /* get oid opaque data */ 1095 info->oid.sec_oid4_len = 1096 si->sc_gss_mech_type->length; 1097 info->oid.sec_oid4_val = kmem_alloc( 1098 si->sc_gss_mech_type->length, 1099 KM_SLEEP); 1100 bcopy(si->sc_gss_mech_type->elements, 1101 info->oid.sec_oid4_val, 1102 info->oid.sec_oid4_len); 1103 } 1104 k++; 1105 } 1106 if (k >= ret_cnt) 1107 break; 1108 } 1109 resp->SECINFO4resok_len = ret_cnt; 1110 resp->SECINFO4resok_val = resok_val; 1111 kmem_free(flavor_list, count * sizeof (int)); 1112 } 1113 1114 VN_RELE(vp); 1115 return (NFS4_OK); 1116 } 1117 1118 /* 1119 * SECINFO (Operation 33): Obtain required security information on 1120 * the component name in the format of (security-mechanism-oid, qop, service) 1121 * triplets. 1122 */ 1123 /* ARGSUSED */ 1124 static void 1125 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1126 struct compound_state *cs) 1127 { 1128 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1129 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1130 utf8string *utfnm = &args->name; 1131 uint_t len; 1132 char *nm; 1133 struct sockaddr *ca; 1134 char *name = NULL; 1135 nfsstat4 status = NFS4_OK; 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 status = utf8_dir_verify(utfnm); 1160 if (status != NFS4_OK) { 1161 if (utfnm->utf8string_len != 2 || 1162 utfnm->utf8string_val[0] != '.' || 1163 utfnm->utf8string_val[1] != '.') { 1164 *cs->statusp = resp->status = status; 1165 goto out; 1166 } 1167 } 1168 1169 nm = utf8_to_str(utfnm, &len, NULL); 1170 if (nm == NULL) { 1171 *cs->statusp = resp->status = NFS4ERR_INVAL; 1172 goto out; 1173 } 1174 1175 if (len > MAXNAMELEN) { 1176 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1177 kmem_free(nm, len); 1178 goto out; 1179 } 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(req, cs) && 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 |= 1343 resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND); 1344 } 1345 1346 if (checkwriteperm && 1347 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1348 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1349 if (!error && (!is_system_labeled() || admin_low_client || 1350 blequal(clabel, slabel))) 1351 resp->access |= ACCESS4_DELETE; 1352 resp->supported |= ACCESS4_DELETE; 1353 } 1354 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1355 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1356 if (!error && !MANDLOCK(vp, va.va_mode) && 1357 (!is_system_labeled() || admin_low_client || 1358 bldominates(clabel, slabel))) 1359 resp->access |= ACCESS4_EXECUTE; 1360 resp->supported |= ACCESS4_EXECUTE; 1361 } 1362 1363 if (is_system_labeled() && !admin_low_client) 1364 label_rele(tslabel); 1365 1366 *cs->statusp = resp->status = NFS4_OK; 1367 out: 1368 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1369 ACCESS4res *, resp); 1370 } 1371 1372 /* ARGSUSED */ 1373 static void 1374 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1375 struct compound_state *cs) 1376 { 1377 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1378 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1379 int error; 1380 vnode_t *vp = cs->vp; 1381 cred_t *cr = cs->cr; 1382 vattr_t va; 1383 1384 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1385 COMMIT4args *, args); 1386 1387 if (vp == NULL) { 1388 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1389 goto out; 1390 } 1391 if (cs->access == CS_ACCESS_DENIED) { 1392 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1393 goto out; 1394 } 1395 1396 if (args->offset + args->count < args->offset) { 1397 *cs->statusp = resp->status = NFS4ERR_INVAL; 1398 goto out; 1399 } 1400 1401 va.va_mask = AT_UID; 1402 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1403 1404 /* 1405 * If we can't get the attributes, then we can't do the 1406 * right access checking. So, we'll fail the request. 1407 */ 1408 if (error) { 1409 *cs->statusp = resp->status = puterrno4(error); 1410 goto out; 1411 } 1412 if (rdonly4(req, cs)) { 1413 *cs->statusp = resp->status = NFS4ERR_ROFS; 1414 goto out; 1415 } 1416 1417 if (vp->v_type != VREG) { 1418 if (vp->v_type == VDIR) 1419 resp->status = NFS4ERR_ISDIR; 1420 else 1421 resp->status = NFS4ERR_INVAL; 1422 *cs->statusp = resp->status; 1423 goto out; 1424 } 1425 1426 if (crgetuid(cr) != va.va_uid && 1427 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1428 *cs->statusp = resp->status = puterrno4(error); 1429 goto out; 1430 } 1431 1432 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1433 1434 if (error) { 1435 *cs->statusp = resp->status = puterrno4(error); 1436 goto out; 1437 } 1438 1439 *cs->statusp = resp->status = NFS4_OK; 1440 resp->writeverf = Write4verf; 1441 out: 1442 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1443 COMMIT4res *, resp); 1444 } 1445 1446 /* 1447 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1448 * was completed. It does the nfsv4 create for special files. 1449 */ 1450 /* ARGSUSED */ 1451 static vnode_t * 1452 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1453 struct compound_state *cs, vattr_t *vap, char *nm) 1454 { 1455 int error; 1456 cred_t *cr = cs->cr; 1457 vnode_t *dvp = cs->vp; 1458 vnode_t *vp = NULL; 1459 int mode; 1460 enum vcexcl excl; 1461 1462 switch (args->type) { 1463 case NF4CHR: 1464 case NF4BLK: 1465 if (secpolicy_sys_devices(cr) != 0) { 1466 *cs->statusp = resp->status = NFS4ERR_PERM; 1467 return (NULL); 1468 } 1469 if (args->type == NF4CHR) 1470 vap->va_type = VCHR; 1471 else 1472 vap->va_type = VBLK; 1473 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1474 args->ftype4_u.devdata.specdata2); 1475 vap->va_mask |= AT_RDEV; 1476 break; 1477 case NF4SOCK: 1478 vap->va_type = VSOCK; 1479 break; 1480 case NF4FIFO: 1481 vap->va_type = VFIFO; 1482 break; 1483 default: 1484 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1485 return (NULL); 1486 } 1487 1488 /* 1489 * Must specify the mode. 1490 */ 1491 if (!(vap->va_mask & AT_MODE)) { 1492 *cs->statusp = resp->status = NFS4ERR_INVAL; 1493 return (NULL); 1494 } 1495 1496 excl = EXCL; 1497 1498 mode = 0; 1499 1500 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1501 if (error) { 1502 *cs->statusp = resp->status = puterrno4(error); 1503 return (NULL); 1504 } 1505 return (vp); 1506 } 1507 1508 /* 1509 * nfsv4 create is used to create non-regular files. For regular files, 1510 * use nfsv4 open. 1511 */ 1512 /* ARGSUSED */ 1513 static void 1514 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1515 struct compound_state *cs) 1516 { 1517 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1518 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1519 int error; 1520 struct vattr bva, iva, iva2, ava, *vap; 1521 cred_t *cr = cs->cr; 1522 vnode_t *dvp = cs->vp; 1523 vnode_t *vp = NULL; 1524 vnode_t *realvp; 1525 char *nm, *lnm; 1526 uint_t len, llen; 1527 int syncval = 0; 1528 struct nfs4_svgetit_arg sarg; 1529 struct nfs4_ntov_table ntov; 1530 struct statvfs64 sb; 1531 nfsstat4 status; 1532 struct sockaddr *ca; 1533 char *name = NULL; 1534 char *lname = NULL; 1535 1536 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1537 CREATE4args *, args); 1538 1539 resp->attrset = 0; 1540 1541 if (dvp == NULL) { 1542 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1543 goto out; 1544 } 1545 1546 /* 1547 * If there is an unshared filesystem mounted on this vnode, 1548 * do not allow to create an object in this directory. 1549 */ 1550 if (vn_ismntpt(dvp)) { 1551 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1552 goto out; 1553 } 1554 1555 /* Verify that type is correct */ 1556 switch (args->type) { 1557 case NF4LNK: 1558 case NF4BLK: 1559 case NF4CHR: 1560 case NF4SOCK: 1561 case NF4FIFO: 1562 case NF4DIR: 1563 break; 1564 default: 1565 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1566 goto out; 1567 }; 1568 1569 if (cs->access == CS_ACCESS_DENIED) { 1570 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1571 goto out; 1572 } 1573 if (dvp->v_type != VDIR) { 1574 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1575 goto out; 1576 } 1577 status = utf8_dir_verify(&args->objname); 1578 if (status != NFS4_OK) { 1579 *cs->statusp = resp->status = status; 1580 goto out; 1581 } 1582 1583 if (rdonly4(req, cs)) { 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 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1604 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1605 MAXPATHLEN + 1); 1606 1607 if (name == NULL) { 1608 *cs->statusp = resp->status = NFS4ERR_INVAL; 1609 kmem_free(nm, len); 1610 goto out; 1611 } 1612 1613 resp->attrset = 0; 1614 1615 sarg.sbp = &sb; 1616 sarg.is_referral = B_FALSE; 1617 nfs4_ntov_table_init(&ntov); 1618 1619 status = do_rfs4_set_attrs(&resp->attrset, 1620 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1621 1622 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1623 status = NFS4ERR_INVAL; 1624 1625 if (status != NFS4_OK) { 1626 *cs->statusp = resp->status = status; 1627 if (name != nm) 1628 kmem_free(name, MAXPATHLEN + 1); 1629 kmem_free(nm, len); 1630 nfs4_ntov_table_free(&ntov, &sarg); 1631 resp->attrset = 0; 1632 goto out; 1633 } 1634 1635 /* Get "before" change value */ 1636 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1637 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1638 if (error) { 1639 *cs->statusp = resp->status = puterrno4(error); 1640 if (name != nm) 1641 kmem_free(name, MAXPATHLEN + 1); 1642 kmem_free(nm, len); 1643 nfs4_ntov_table_free(&ntov, &sarg); 1644 resp->attrset = 0; 1645 goto out; 1646 } 1647 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1648 1649 vap = sarg.vap; 1650 1651 /* 1652 * Set the default initial values for attributes when the parent 1653 * directory does not have the VSUID/VSGID bit set and they have 1654 * not been specified in createattrs. 1655 */ 1656 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1657 vap->va_uid = crgetuid(cr); 1658 vap->va_mask |= AT_UID; 1659 } 1660 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1661 vap->va_gid = crgetgid(cr); 1662 vap->va_mask |= AT_GID; 1663 } 1664 1665 vap->va_mask |= AT_TYPE; 1666 switch (args->type) { 1667 case NF4DIR: 1668 vap->va_type = VDIR; 1669 if ((vap->va_mask & AT_MODE) == 0) { 1670 vap->va_mode = 0700; /* default: owner rwx only */ 1671 vap->va_mask |= AT_MODE; 1672 } 1673 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1674 if (error) 1675 break; 1676 1677 /* 1678 * Get the initial "after" sequence number, if it fails, 1679 * set to zero 1680 */ 1681 iva.va_mask = AT_SEQ; 1682 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1683 iva.va_seq = 0; 1684 break; 1685 case NF4LNK: 1686 vap->va_type = VLNK; 1687 if ((vap->va_mask & AT_MODE) == 0) { 1688 vap->va_mode = 0700; /* default: owner rwx only */ 1689 vap->va_mask |= AT_MODE; 1690 } 1691 1692 /* 1693 * symlink names must be treated as data 1694 */ 1695 lnm = utf8_to_str(&args->ftype4_u.linkdata, &llen, NULL); 1696 1697 if (lnm == NULL) { 1698 *cs->statusp = resp->status = NFS4ERR_INVAL; 1699 if (name != nm) 1700 kmem_free(name, MAXPATHLEN + 1); 1701 kmem_free(nm, len); 1702 nfs4_ntov_table_free(&ntov, &sarg); 1703 resp->attrset = 0; 1704 goto out; 1705 } 1706 1707 if (llen > MAXPATHLEN) { 1708 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1709 if (name != nm) 1710 kmem_free(name, MAXPATHLEN + 1); 1711 kmem_free(nm, len); 1712 kmem_free(lnm, llen); 1713 nfs4_ntov_table_free(&ntov, &sarg); 1714 resp->attrset = 0; 1715 goto out; 1716 } 1717 1718 lname = nfscmd_convname(ca, cs->exi, lnm, 1719 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1720 1721 if (lname == NULL) { 1722 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1723 if (name != nm) 1724 kmem_free(name, MAXPATHLEN + 1); 1725 kmem_free(nm, len); 1726 kmem_free(lnm, llen); 1727 nfs4_ntov_table_free(&ntov, &sarg); 1728 resp->attrset = 0; 1729 goto out; 1730 } 1731 1732 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1733 if (lname != lnm) 1734 kmem_free(lname, MAXPATHLEN + 1); 1735 kmem_free(lnm, llen); 1736 if (error) 1737 break; 1738 1739 /* 1740 * Get the initial "after" sequence number, if it fails, 1741 * set to zero 1742 */ 1743 iva.va_mask = AT_SEQ; 1744 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1745 iva.va_seq = 0; 1746 1747 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, 1748 NULL, NULL, NULL); 1749 if (error) 1750 break; 1751 1752 /* 1753 * va_seq is not safe over VOP calls, check it again 1754 * if it has changed zero out iva to force atomic = FALSE. 1755 */ 1756 iva2.va_mask = AT_SEQ; 1757 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1758 iva2.va_seq != iva.va_seq) 1759 iva.va_seq = 0; 1760 break; 1761 default: 1762 /* 1763 * probably a special file. 1764 */ 1765 if ((vap->va_mask & AT_MODE) == 0) { 1766 vap->va_mode = 0600; /* default: owner rw only */ 1767 vap->va_mask |= AT_MODE; 1768 } 1769 syncval = FNODSYNC; 1770 /* 1771 * We know this will only generate one VOP call 1772 */ 1773 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); 1774 1775 if (vp == NULL) { 1776 if (name != nm) 1777 kmem_free(name, MAXPATHLEN + 1); 1778 kmem_free(nm, len); 1779 nfs4_ntov_table_free(&ntov, &sarg); 1780 resp->attrset = 0; 1781 goto out; 1782 } 1783 1784 /* 1785 * Get the initial "after" sequence number, if it fails, 1786 * set to zero 1787 */ 1788 iva.va_mask = AT_SEQ; 1789 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1790 iva.va_seq = 0; 1791 1792 break; 1793 } 1794 if (name != nm) 1795 kmem_free(name, MAXPATHLEN + 1); 1796 kmem_free(nm, len); 1797 1798 if (error) { 1799 *cs->statusp = resp->status = puterrno4(error); 1800 } 1801 1802 /* 1803 * Force modified data and metadata out to stable storage. 1804 */ 1805 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1806 1807 if (resp->status != NFS4_OK) { 1808 if (vp != NULL) 1809 VN_RELE(vp); 1810 nfs4_ntov_table_free(&ntov, &sarg); 1811 resp->attrset = 0; 1812 goto out; 1813 } 1814 1815 /* 1816 * Finish setup of cinfo response, "before" value already set. 1817 * Get "after" change value, if it fails, simply return the 1818 * before value. 1819 */ 1820 ava.va_mask = AT_CTIME|AT_SEQ; 1821 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1822 ava.va_ctime = bva.va_ctime; 1823 ava.va_seq = 0; 1824 } 1825 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1826 1827 /* 1828 * True verification that object was created with correct 1829 * attrs is impossible. The attrs could have been changed 1830 * immediately after object creation. If attributes did 1831 * not verify, the only recourse for the server is to 1832 * destroy the object. Maybe if some attrs (like gid) 1833 * are set incorrectly, the object should be destroyed; 1834 * however, seems bad as a default policy. Do we really 1835 * want to destroy an object over one of the times not 1836 * verifying correctly? For these reasons, the server 1837 * currently sets bits in attrset for createattrs 1838 * that were set; however, no verification is done. 1839 * 1840 * vmask_to_nmask accounts for vattr bits set on create 1841 * [do_rfs4_set_attrs() only sets resp bits for 1842 * non-vattr/vfs bits.] 1843 * Mask off any bits set by default so as not to return 1844 * more attrset bits than were requested in createattrs 1845 */ 1846 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1847 resp->attrset &= args->createattrs.attrmask; 1848 nfs4_ntov_table_free(&ntov, &sarg); 1849 1850 error = makefh4(&cs->fh, vp, cs->exi); 1851 if (error) { 1852 *cs->statusp = resp->status = puterrno4(error); 1853 } 1854 1855 /* 1856 * The cinfo.atomic = TRUE only if we got no errors, we have 1857 * non-zero va_seq's, and it has incremented by exactly one 1858 * during the creation and it didn't change during the VOP_LOOKUP 1859 * or VOP_FSYNC. 1860 */ 1861 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1862 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1863 resp->cinfo.atomic = TRUE; 1864 else 1865 resp->cinfo.atomic = FALSE; 1866 1867 /* 1868 * Force modified metadata out to stable storage. 1869 * 1870 * if a underlying vp exists, pass it to VOP_FSYNC 1871 */ 1872 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1873 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1874 else 1875 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1876 1877 if (resp->status != NFS4_OK) { 1878 VN_RELE(vp); 1879 goto out; 1880 } 1881 if (cs->vp) 1882 VN_RELE(cs->vp); 1883 1884 cs->vp = vp; 1885 *cs->statusp = resp->status = NFS4_OK; 1886 out: 1887 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1888 CREATE4res *, resp); 1889 } 1890 1891 /*ARGSUSED*/ 1892 static void 1893 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1894 struct compound_state *cs) 1895 { 1896 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1897 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1898 1899 rfs4_op_inval(argop, resop, req, cs); 1900 1901 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1902 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1903 } 1904 1905 /*ARGSUSED*/ 1906 static void 1907 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1908 struct compound_state *cs) 1909 { 1910 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1911 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1912 rfs4_deleg_state_t *dsp; 1913 nfsstat4 status; 1914 1915 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1916 DELEGRETURN4args *, args); 1917 1918 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1919 resp->status = *cs->statusp = status; 1920 if (status != NFS4_OK) 1921 goto out; 1922 1923 /* Ensure specified filehandle matches */ 1924 if (cs->vp != dsp->rds_finfo->rf_vp) { 1925 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1926 } else 1927 rfs4_return_deleg(dsp, FALSE); 1928 1929 rfs4_update_lease(dsp->rds_client); 1930 1931 rfs4_deleg_state_rele(dsp); 1932 out: 1933 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1934 DELEGRETURN4res *, resp); 1935 } 1936 1937 /* 1938 * Check to see if a given "flavor" is an explicitly shared flavor. 1939 * The assumption of this routine is the "flavor" is already a valid 1940 * flavor in the secinfo list of "exi". 1941 * 1942 * e.g. 1943 * # share -o sec=flavor1 /export 1944 * # share -o sec=flavor2 /export/home 1945 * 1946 * flavor2 is not an explicitly shared flavor for /export, 1947 * however it is in the secinfo list for /export thru the 1948 * server namespace setup. 1949 */ 1950 int 1951 is_exported_sec(int flavor, struct exportinfo *exi) 1952 { 1953 int i; 1954 struct secinfo *sp; 1955 1956 sp = exi->exi_export.ex_secinfo; 1957 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1958 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1959 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1960 return (SEC_REF_EXPORTED(&sp[i])); 1961 } 1962 } 1963 1964 /* Should not reach this point based on the assumption */ 1965 return (0); 1966 } 1967 1968 /* 1969 * Check if the security flavor used in the request matches what is 1970 * required at the export point or at the root pseudo node (exi_root). 1971 * 1972 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1973 * 1974 */ 1975 static int 1976 secinfo_match_or_authnone(struct compound_state *cs) 1977 { 1978 int i; 1979 struct secinfo *sp; 1980 1981 /* 1982 * Check cs->nfsflavor (from the request) against 1983 * the current export data in cs->exi. 1984 */ 1985 sp = cs->exi->exi_export.ex_secinfo; 1986 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1987 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 1988 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 1989 return (1); 1990 } 1991 1992 return (0); 1993 } 1994 1995 /* 1996 * Check the access authority for the client and return the correct error. 1997 */ 1998 nfsstat4 1999 call_checkauth4(struct compound_state *cs, struct svc_req *req) 2000 { 2001 int authres; 2002 2003 /* 2004 * First, check if the security flavor used in the request 2005 * are among the flavors set in the server namespace. 2006 */ 2007 if (!secinfo_match_or_authnone(cs)) { 2008 *cs->statusp = NFS4ERR_WRONGSEC; 2009 return (*cs->statusp); 2010 } 2011 2012 authres = checkauth4(cs, req); 2013 2014 if (authres > 0) { 2015 *cs->statusp = NFS4_OK; 2016 if (! (cs->access & CS_ACCESS_LIMITED)) 2017 cs->access = CS_ACCESS_OK; 2018 } else if (authres == 0) { 2019 *cs->statusp = NFS4ERR_ACCESS; 2020 } else if (authres == -2) { 2021 *cs->statusp = NFS4ERR_WRONGSEC; 2022 } else { 2023 *cs->statusp = NFS4ERR_DELAY; 2024 } 2025 return (*cs->statusp); 2026 } 2027 2028 /* 2029 * bitmap4_to_attrmask is called by getattr and readdir. 2030 * It sets up the vattr mask and determines whether vfsstat call is needed 2031 * based on the input bitmap. 2032 * Returns nfsv4 status. 2033 */ 2034 static nfsstat4 2035 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2036 { 2037 int i; 2038 uint_t va_mask; 2039 struct statvfs64 *sbp = sargp->sbp; 2040 2041 sargp->sbp = NULL; 2042 sargp->flag = 0; 2043 sargp->rdattr_error = NFS4_OK; 2044 sargp->mntdfid_set = FALSE; 2045 if (sargp->cs->vp) 2046 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2047 FH4_ATTRDIR | FH4_NAMEDATTR); 2048 else 2049 sargp->xattr = 0; 2050 2051 /* 2052 * Set rdattr_error_req to true if return error per 2053 * failed entry rather than fail the readdir. 2054 */ 2055 if (breq & FATTR4_RDATTR_ERROR_MASK) 2056 sargp->rdattr_error_req = 1; 2057 else 2058 sargp->rdattr_error_req = 0; 2059 2060 /* 2061 * generate the va_mask 2062 * Handle the easy cases first 2063 */ 2064 switch (breq) { 2065 case NFS4_NTOV_ATTR_MASK: 2066 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2067 return (NFS4_OK); 2068 2069 case NFS4_FS_ATTR_MASK: 2070 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2071 sargp->sbp = sbp; 2072 return (NFS4_OK); 2073 2074 case NFS4_NTOV_ATTR_CACHE_MASK: 2075 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2076 return (NFS4_OK); 2077 2078 case FATTR4_LEASE_TIME_MASK: 2079 sargp->vap->va_mask = 0; 2080 return (NFS4_OK); 2081 2082 default: 2083 va_mask = 0; 2084 for (i = 0; i < nfs4_ntov_map_size; i++) { 2085 if ((breq & nfs4_ntov_map[i].fbit) && 2086 nfs4_ntov_map[i].vbit) 2087 va_mask |= nfs4_ntov_map[i].vbit; 2088 } 2089 2090 /* 2091 * Check is vfsstat is needed 2092 */ 2093 if (breq & NFS4_FS_ATTR_MASK) 2094 sargp->sbp = sbp; 2095 2096 sargp->vap->va_mask = va_mask; 2097 return (NFS4_OK); 2098 } 2099 /* NOTREACHED */ 2100 } 2101 2102 /* 2103 * bitmap4_get_sysattrs is called by getattr and readdir. 2104 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2105 * Returns nfsv4 status. 2106 */ 2107 static nfsstat4 2108 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2109 { 2110 int error; 2111 struct compound_state *cs = sargp->cs; 2112 vnode_t *vp = cs->vp; 2113 2114 if (sargp->sbp != NULL) { 2115 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2116 sargp->sbp = NULL; /* to identify error */ 2117 return (puterrno4(error)); 2118 } 2119 } 2120 2121 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2122 } 2123 2124 static void 2125 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2126 { 2127 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2128 KM_SLEEP); 2129 ntovp->attrcnt = 0; 2130 ntovp->vfsstat = FALSE; 2131 } 2132 2133 static void 2134 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2135 struct nfs4_svgetit_arg *sargp) 2136 { 2137 int i; 2138 union nfs4_attr_u *na; 2139 uint8_t *amap; 2140 2141 /* 2142 * XXX Should do the same checks for whether the bit is set 2143 */ 2144 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2145 i < ntovp->attrcnt; i++, na++, amap++) { 2146 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2147 NFS4ATTR_FREEIT, sargp, na); 2148 } 2149 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2150 /* 2151 * xdr_free for getattr will be done later 2152 */ 2153 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2154 i < ntovp->attrcnt; i++, na++, amap++) { 2155 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2156 } 2157 } 2158 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2159 } 2160 2161 /* 2162 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2163 */ 2164 static nfsstat4 2165 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2166 struct nfs4_svgetit_arg *sargp) 2167 { 2168 int error = 0; 2169 int i, k; 2170 struct nfs4_ntov_table ntov; 2171 XDR xdr; 2172 ulong_t xdr_size; 2173 char *xdr_attrs; 2174 nfsstat4 status = NFS4_OK; 2175 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2176 union nfs4_attr_u *na; 2177 uint8_t *amap; 2178 2179 sargp->op = NFS4ATTR_GETIT; 2180 sargp->flag = 0; 2181 2182 fattrp->attrmask = 0; 2183 /* if no bits requested, then return empty fattr4 */ 2184 if (breq == 0) { 2185 fattrp->attrlist4_len = 0; 2186 fattrp->attrlist4 = NULL; 2187 return (NFS4_OK); 2188 } 2189 2190 /* 2191 * return NFS4ERR_INVAL when client requests write-only attrs 2192 */ 2193 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2194 return (NFS4ERR_INVAL); 2195 2196 nfs4_ntov_table_init(&ntov); 2197 na = ntov.na; 2198 amap = ntov.amap; 2199 2200 /* 2201 * Now loop to get or verify the attrs 2202 */ 2203 for (i = 0; i < nfs4_ntov_map_size; i++) { 2204 if (breq & nfs4_ntov_map[i].fbit) { 2205 if ((*nfs4_ntov_map[i].sv_getit)( 2206 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2207 2208 error = (*nfs4_ntov_map[i].sv_getit)( 2209 NFS4ATTR_GETIT, sargp, na); 2210 2211 /* 2212 * Possible error values: 2213 * >0 if sv_getit failed to 2214 * get the attr; 0 if succeeded; 2215 * <0 if rdattr_error and the 2216 * attribute cannot be returned. 2217 */ 2218 if (error && !(sargp->rdattr_error_req)) 2219 goto done; 2220 /* 2221 * If error then just for entry 2222 */ 2223 if (error == 0) { 2224 fattrp->attrmask |= 2225 nfs4_ntov_map[i].fbit; 2226 *amap++ = 2227 (uint8_t)nfs4_ntov_map[i].nval; 2228 na++; 2229 (ntov.attrcnt)++; 2230 } else if ((error > 0) && 2231 (sargp->rdattr_error == NFS4_OK)) { 2232 sargp->rdattr_error = puterrno4(error); 2233 } 2234 error = 0; 2235 } 2236 } 2237 } 2238 2239 /* 2240 * If rdattr_error was set after the return value for it was assigned, 2241 * update it. 2242 */ 2243 if (prev_rdattr_error != sargp->rdattr_error) { 2244 na = ntov.na; 2245 amap = ntov.amap; 2246 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2247 k = *amap; 2248 if (k < FATTR4_RDATTR_ERROR) { 2249 continue; 2250 } 2251 if ((k == FATTR4_RDATTR_ERROR) && 2252 ((*nfs4_ntov_map[k].sv_getit)( 2253 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2254 2255 (void) (*nfs4_ntov_map[k].sv_getit)( 2256 NFS4ATTR_GETIT, sargp, na); 2257 } 2258 break; 2259 } 2260 } 2261 2262 xdr_size = 0; 2263 na = ntov.na; 2264 amap = ntov.amap; 2265 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2266 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2267 } 2268 2269 fattrp->attrlist4_len = xdr_size; 2270 if (xdr_size) { 2271 /* freed by rfs4_op_getattr_free() */ 2272 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2273 2274 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2275 2276 na = ntov.na; 2277 amap = ntov.amap; 2278 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2279 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2280 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2281 int, *amap); 2282 status = NFS4ERR_SERVERFAULT; 2283 break; 2284 } 2285 } 2286 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2287 } else { 2288 fattrp->attrlist4 = NULL; 2289 } 2290 done: 2291 2292 nfs4_ntov_table_free(&ntov, sargp); 2293 2294 if (error != 0) 2295 status = puterrno4(error); 2296 2297 return (status); 2298 } 2299 2300 /* ARGSUSED */ 2301 static void 2302 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2303 struct compound_state *cs) 2304 { 2305 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2306 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2307 struct nfs4_svgetit_arg sarg; 2308 struct statvfs64 sb; 2309 nfsstat4 status; 2310 2311 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2312 GETATTR4args *, args); 2313 2314 if (cs->vp == NULL) { 2315 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2316 goto out; 2317 } 2318 2319 if (cs->access == CS_ACCESS_DENIED) { 2320 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2321 goto out; 2322 } 2323 2324 sarg.sbp = &sb; 2325 sarg.cs = cs; 2326 sarg.is_referral = B_FALSE; 2327 2328 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2329 if (status == NFS4_OK) { 2330 2331 status = bitmap4_get_sysattrs(&sarg); 2332 if (status == NFS4_OK) { 2333 2334 /* Is this a referral? */ 2335 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2336 /* Older V4 Solaris client sees a link */ 2337 if (client_is_downrev(req)) 2338 sarg.vap->va_type = VLNK; 2339 else 2340 sarg.is_referral = B_TRUE; 2341 } 2342 2343 status = do_rfs4_op_getattr(args->attr_request, 2344 &resp->obj_attributes, &sarg); 2345 } 2346 } 2347 *cs->statusp = resp->status = status; 2348 out: 2349 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2350 GETATTR4res *, resp); 2351 } 2352 2353 static void 2354 rfs4_op_getattr_free(nfs_resop4 *resop) 2355 { 2356 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2357 2358 nfs4_fattr4_free(&resp->obj_attributes); 2359 } 2360 2361 /* ARGSUSED */ 2362 static void 2363 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2364 struct compound_state *cs) 2365 { 2366 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2367 2368 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2369 2370 if (cs->vp == NULL) { 2371 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2372 goto out; 2373 } 2374 if (cs->access == CS_ACCESS_DENIED) { 2375 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2376 goto out; 2377 } 2378 2379 /* check for reparse point at the share point */ 2380 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2381 /* it's all bad */ 2382 cs->exi->exi_moved = 1; 2383 *cs->statusp = resp->status = NFS4ERR_MOVED; 2384 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2385 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2386 return; 2387 } 2388 2389 /* check for reparse point at vp */ 2390 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2391 /* it's not all bad */ 2392 *cs->statusp = resp->status = NFS4ERR_MOVED; 2393 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2394 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2395 return; 2396 } 2397 2398 resp->object.nfs_fh4_val = 2399 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2400 nfs_fh4_copy(&cs->fh, &resp->object); 2401 *cs->statusp = resp->status = NFS4_OK; 2402 out: 2403 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2404 GETFH4res *, resp); 2405 } 2406 2407 static void 2408 rfs4_op_getfh_free(nfs_resop4 *resop) 2409 { 2410 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2411 2412 if (resp->status == NFS4_OK && 2413 resp->object.nfs_fh4_val != NULL) { 2414 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2415 resp->object.nfs_fh4_val = NULL; 2416 resp->object.nfs_fh4_len = 0; 2417 } 2418 } 2419 2420 /* 2421 * illegal: args: void 2422 * res : status (NFS4ERR_OP_ILLEGAL) 2423 */ 2424 /* ARGSUSED */ 2425 static void 2426 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2427 struct svc_req *req, struct compound_state *cs) 2428 { 2429 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2430 2431 resop->resop = OP_ILLEGAL; 2432 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2433 } 2434 2435 /* 2436 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2437 * res: status. If success - CURRENT_FH unchanged, return change_info 2438 */ 2439 /* ARGSUSED */ 2440 static void 2441 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2442 struct compound_state *cs) 2443 { 2444 LINK4args *args = &argop->nfs_argop4_u.oplink; 2445 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2446 int error; 2447 vnode_t *vp; 2448 vnode_t *dvp; 2449 struct vattr bdva, idva, adva; 2450 char *nm; 2451 uint_t len; 2452 struct sockaddr *ca; 2453 char *name = NULL; 2454 nfsstat4 status; 2455 2456 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2457 LINK4args *, args); 2458 2459 /* SAVED_FH: source object */ 2460 vp = cs->saved_vp; 2461 if (vp == NULL) { 2462 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2463 goto out; 2464 } 2465 2466 /* CURRENT_FH: target directory */ 2467 dvp = cs->vp; 2468 if (dvp == NULL) { 2469 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2470 goto out; 2471 } 2472 2473 /* 2474 * If there is a non-shared filesystem mounted on this vnode, 2475 * do not allow to link any file in this directory. 2476 */ 2477 if (vn_ismntpt(dvp)) { 2478 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2479 goto out; 2480 } 2481 2482 if (cs->access == CS_ACCESS_DENIED) { 2483 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2484 goto out; 2485 } 2486 2487 /* Check source object's type validity */ 2488 if (vp->v_type == VDIR) { 2489 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2490 goto out; 2491 } 2492 2493 /* Check target directory's type */ 2494 if (dvp->v_type != VDIR) { 2495 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2496 goto out; 2497 } 2498 2499 if (cs->saved_exi != cs->exi) { 2500 *cs->statusp = resp->status = NFS4ERR_XDEV; 2501 goto out; 2502 } 2503 2504 status = utf8_dir_verify(&args->newname); 2505 if (status != NFS4_OK) { 2506 *cs->statusp = resp->status = status; 2507 goto out; 2508 } 2509 2510 nm = utf8_to_fn(&args->newname, &len, NULL); 2511 if (nm == NULL) { 2512 *cs->statusp = resp->status = NFS4ERR_INVAL; 2513 goto out; 2514 } 2515 2516 if (len > MAXNAMELEN) { 2517 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2518 kmem_free(nm, len); 2519 goto out; 2520 } 2521 2522 if (rdonly4(req, cs)) { 2523 *cs->statusp = resp->status = NFS4ERR_ROFS; 2524 kmem_free(nm, len); 2525 goto out; 2526 } 2527 2528 /* Get "before" change value */ 2529 bdva.va_mask = AT_CTIME|AT_SEQ; 2530 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2531 if (error) { 2532 *cs->statusp = resp->status = puterrno4(error); 2533 kmem_free(nm, len); 2534 goto out; 2535 } 2536 2537 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2538 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2539 MAXPATHLEN + 1); 2540 2541 if (name == NULL) { 2542 *cs->statusp = resp->status = NFS4ERR_INVAL; 2543 kmem_free(nm, len); 2544 goto out; 2545 } 2546 2547 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2548 2549 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2550 2551 if (nm != name) 2552 kmem_free(name, MAXPATHLEN + 1); 2553 kmem_free(nm, len); 2554 2555 /* 2556 * Get the initial "after" sequence number, if it fails, set to zero 2557 */ 2558 idva.va_mask = AT_SEQ; 2559 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2560 idva.va_seq = 0; 2561 2562 /* 2563 * Force modified data and metadata out to stable storage. 2564 */ 2565 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2566 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2567 2568 if (error) { 2569 *cs->statusp = resp->status = puterrno4(error); 2570 goto out; 2571 } 2572 2573 /* 2574 * Get "after" change value, if it fails, simply return the 2575 * before value. 2576 */ 2577 adva.va_mask = AT_CTIME|AT_SEQ; 2578 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2579 adva.va_ctime = bdva.va_ctime; 2580 adva.va_seq = 0; 2581 } 2582 2583 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2584 2585 /* 2586 * The cinfo.atomic = TRUE only if we have 2587 * non-zero va_seq's, and it has incremented by exactly one 2588 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2589 */ 2590 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2591 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2592 resp->cinfo.atomic = TRUE; 2593 else 2594 resp->cinfo.atomic = FALSE; 2595 2596 *cs->statusp = resp->status = NFS4_OK; 2597 out: 2598 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2599 LINK4res *, resp); 2600 } 2601 2602 /* 2603 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2604 */ 2605 2606 /* ARGSUSED */ 2607 static nfsstat4 2608 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) 2609 { 2610 int error; 2611 int different_export = 0; 2612 vnode_t *vp, *pre_tvp = NULL, *oldvp = NULL; 2613 struct exportinfo *exi = NULL, *pre_exi = NULL; 2614 nfsstat4 stat; 2615 fid_t fid; 2616 int attrdir, dotdot, walk; 2617 bool_t is_newvp = FALSE; 2618 2619 if (cs->vp->v_flag & V_XATTRDIR) { 2620 attrdir = 1; 2621 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2622 } else { 2623 attrdir = 0; 2624 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2625 } 2626 2627 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2628 2629 /* 2630 * If dotdotting, then need to check whether it's 2631 * above the root of a filesystem, or above an 2632 * export point. 2633 */ 2634 if (dotdot) { 2635 2636 /* 2637 * If dotdotting at the root of a filesystem, then 2638 * need to traverse back to the mounted-on filesystem 2639 * and do the dotdot lookup there. 2640 */ 2641 if (cs->vp->v_flag & VROOT) { 2642 2643 /* 2644 * If at the system root, then can 2645 * go up no further. 2646 */ 2647 if (VN_CMP(cs->vp, rootdir)) 2648 return (puterrno4(ENOENT)); 2649 2650 /* 2651 * Traverse back to the mounted-on filesystem 2652 */ 2653 cs->vp = untraverse(cs->vp); 2654 2655 /* 2656 * Set the different_export flag so we remember 2657 * to pick up a new exportinfo entry for 2658 * this new filesystem. 2659 */ 2660 different_export = 1; 2661 } else { 2662 2663 /* 2664 * If dotdotting above an export point then set 2665 * the different_export to get new export info. 2666 */ 2667 different_export = nfs_exported(cs->exi, cs->vp); 2668 } 2669 } 2670 2671 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2672 NULL, NULL, NULL); 2673 if (error) 2674 return (puterrno4(error)); 2675 2676 /* 2677 * If the vnode is in a pseudo filesystem, check whether it is visible. 2678 * 2679 * XXX if the vnode is a symlink and it is not visible in 2680 * a pseudo filesystem, return ENOENT (not following symlink). 2681 * V4 client can not mount such symlink. This is a regression 2682 * from V2/V3. 2683 * 2684 * In the same exported filesystem, if the security flavor used 2685 * is not an explicitly shared flavor, limit the view to the visible 2686 * list entries only. This is not a WRONGSEC case because it's already 2687 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2688 */ 2689 if (!different_export && 2690 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2691 cs->access & CS_ACCESS_LIMITED)) { 2692 if (! nfs_visible(cs->exi, vp, &different_export)) { 2693 VN_RELE(vp); 2694 return (puterrno4(ENOENT)); 2695 } 2696 } 2697 2698 /* 2699 * If it's a mountpoint, then traverse it. 2700 */ 2701 if (vn_ismntpt(vp)) { 2702 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2703 pre_tvp = vp; /* save pre-traversed vnode */ 2704 2705 /* 2706 * hold pre_tvp to counteract rele by traverse. We will 2707 * need pre_tvp below if checkexport4 fails 2708 */ 2709 VN_HOLD(pre_tvp); 2710 if ((error = traverse(&vp)) != 0) { 2711 VN_RELE(vp); 2712 VN_RELE(pre_tvp); 2713 return (puterrno4(error)); 2714 } 2715 different_export = 1; 2716 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2717 /* 2718 * The vfsp comparison is to handle the case where 2719 * a LOFS mount is shared. lo_lookup traverses mount points, 2720 * and NFS is unaware of local fs transistions because 2721 * v_vfsmountedhere isn't set. For this special LOFS case, 2722 * the dir and the obj returned by lookup will have different 2723 * vfs ptrs. 2724 */ 2725 different_export = 1; 2726 } 2727 2728 if (different_export) { 2729 2730 bzero(&fid, sizeof (fid)); 2731 fid.fid_len = MAXFIDSZ; 2732 error = vop_fid_pseudo(vp, &fid); 2733 if (error) { 2734 VN_RELE(vp); 2735 if (pre_tvp) 2736 VN_RELE(pre_tvp); 2737 return (puterrno4(error)); 2738 } 2739 2740 if (dotdot) 2741 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2742 else 2743 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2744 2745 if (exi == NULL) { 2746 if (pre_tvp) { 2747 /* 2748 * If this vnode is a mounted-on vnode, 2749 * but the mounted-on file system is not 2750 * exported, send back the filehandle for 2751 * the mounted-on vnode, not the root of 2752 * the mounted-on file system. 2753 */ 2754 VN_RELE(vp); 2755 vp = pre_tvp; 2756 exi = pre_exi; 2757 } else { 2758 VN_RELE(vp); 2759 return (puterrno4(EACCES)); 2760 } 2761 } else if (pre_tvp) { 2762 /* we're done with pre_tvp now. release extra hold */ 2763 VN_RELE(pre_tvp); 2764 } 2765 2766 cs->exi = exi; 2767 2768 /* 2769 * Now we do a checkauth4. The reason is that 2770 * this client/user may not have access to the new 2771 * exported file system, and if he does, 2772 * the client/user may be mapped to a different uid. 2773 * 2774 * We start with a new cr, because the checkauth4 done 2775 * in the PUT*FH operation over wrote the cred's uid, 2776 * gid, etc, and we want the real thing before calling 2777 * checkauth4() 2778 */ 2779 crfree(cs->cr); 2780 cs->cr = crdup(cs->basecr); 2781 2782 oldvp = cs->vp; 2783 cs->vp = vp; 2784 is_newvp = TRUE; 2785 2786 stat = call_checkauth4(cs, req); 2787 if (stat != NFS4_OK) { 2788 VN_RELE(cs->vp); 2789 cs->vp = oldvp; 2790 return (stat); 2791 } 2792 } 2793 2794 /* 2795 * After various NFS checks, do a label check on the path 2796 * component. The label on this path should either be the 2797 * global zone's label or a zone's label. We are only 2798 * interested in the zone's label because exported files 2799 * in global zone is accessible (though read-only) to 2800 * clients. The exportability/visibility check is already 2801 * done before reaching this code. 2802 */ 2803 if (is_system_labeled()) { 2804 bslabel_t *clabel; 2805 2806 ASSERT(req->rq_label != NULL); 2807 clabel = req->rq_label; 2808 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2809 "got client label from request(1)", struct svc_req *, req); 2810 2811 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2812 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2813 cs->exi)) { 2814 error = EACCES; 2815 goto err_out; 2816 } 2817 } else { 2818 /* 2819 * We grant access to admin_low label clients 2820 * only if the client is trusted, i.e. also 2821 * running Solaris Trusted Extension. 2822 */ 2823 struct sockaddr *ca; 2824 int addr_type; 2825 void *ipaddr; 2826 tsol_tpc_t *tp; 2827 2828 ca = (struct sockaddr *)svc_getrpccaller( 2829 req->rq_xprt)->buf; 2830 if (ca->sa_family == AF_INET) { 2831 addr_type = IPV4_VERSION; 2832 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2833 } else if (ca->sa_family == AF_INET6) { 2834 addr_type = IPV6_VERSION; 2835 ipaddr = &((struct sockaddr_in6 *) 2836 ca)->sin6_addr; 2837 } 2838 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2839 if (tp == NULL || tp->tpc_tp.tp_doi != 2840 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2841 SUN_CIPSO) { 2842 if (tp != NULL) 2843 TPC_RELE(tp); 2844 error = EACCES; 2845 goto err_out; 2846 } 2847 TPC_RELE(tp); 2848 } 2849 } 2850 2851 error = makefh4(&cs->fh, vp, cs->exi); 2852 2853 err_out: 2854 if (error) { 2855 if (is_newvp) { 2856 VN_RELE(cs->vp); 2857 cs->vp = oldvp; 2858 } else 2859 VN_RELE(vp); 2860 return (puterrno4(error)); 2861 } 2862 2863 if (!is_newvp) { 2864 if (cs->vp) 2865 VN_RELE(cs->vp); 2866 cs->vp = vp; 2867 } else if (oldvp) 2868 VN_RELE(oldvp); 2869 2870 /* 2871 * if did lookup on attrdir and didn't lookup .., set named 2872 * attr fh flag 2873 */ 2874 if (attrdir && ! dotdot) 2875 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2876 2877 /* Assume false for now, open proc will set this */ 2878 cs->mandlock = FALSE; 2879 2880 return (NFS4_OK); 2881 } 2882 2883 /* ARGSUSED */ 2884 static void 2885 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2886 struct compound_state *cs) 2887 { 2888 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2889 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2890 char *nm; 2891 uint_t len; 2892 struct sockaddr *ca; 2893 char *name = NULL; 2894 nfsstat4 status; 2895 2896 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2897 LOOKUP4args *, args); 2898 2899 if (cs->vp == NULL) { 2900 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2901 goto out; 2902 } 2903 2904 if (cs->vp->v_type == VLNK) { 2905 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2906 goto out; 2907 } 2908 2909 if (cs->vp->v_type != VDIR) { 2910 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2911 goto out; 2912 } 2913 2914 status = utf8_dir_verify(&args->objname); 2915 if (status != NFS4_OK) { 2916 *cs->statusp = resp->status = status; 2917 goto out; 2918 } 2919 2920 nm = utf8_to_str(&args->objname, &len, NULL); 2921 if (nm == NULL) { 2922 *cs->statusp = resp->status = NFS4ERR_INVAL; 2923 goto out; 2924 } 2925 2926 if (len > MAXNAMELEN) { 2927 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2928 kmem_free(nm, len); 2929 goto out; 2930 } 2931 2932 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2933 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2934 MAXPATHLEN + 1); 2935 2936 if (name == NULL) { 2937 *cs->statusp = resp->status = NFS4ERR_INVAL; 2938 kmem_free(nm, len); 2939 goto out; 2940 } 2941 2942 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 2943 2944 if (name != nm) 2945 kmem_free(name, MAXPATHLEN + 1); 2946 kmem_free(nm, len); 2947 2948 out: 2949 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2950 LOOKUP4res *, resp); 2951 } 2952 2953 /* ARGSUSED */ 2954 static void 2955 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2956 struct compound_state *cs) 2957 { 2958 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2959 2960 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2961 2962 if (cs->vp == NULL) { 2963 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2964 goto out; 2965 } 2966 2967 if (cs->vp->v_type != VDIR) { 2968 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2969 goto out; 2970 } 2971 2972 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 2973 2974 /* 2975 * From NFSV4 Specification, LOOKUPP should not check for 2976 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2977 */ 2978 if (resp->status == NFS4ERR_WRONGSEC) { 2979 *cs->statusp = resp->status = NFS4_OK; 2980 } 2981 2982 out: 2983 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 2984 LOOKUPP4res *, resp); 2985 } 2986 2987 2988 /*ARGSUSED2*/ 2989 static void 2990 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2991 struct compound_state *cs) 2992 { 2993 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 2994 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 2995 vnode_t *avp = NULL; 2996 int lookup_flags = LOOKUP_XATTR, error; 2997 int exp_ro = 0; 2998 2999 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 3000 OPENATTR4args *, args); 3001 3002 if (cs->vp == NULL) { 3003 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3004 goto out; 3005 } 3006 3007 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3008 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3009 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3010 goto out; 3011 } 3012 3013 /* 3014 * If file system supports passing ACE mask to VOP_ACCESS then 3015 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3016 */ 3017 3018 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3019 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3020 V_ACE_MASK, cs->cr, NULL); 3021 else 3022 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3023 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3024 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3025 3026 if (error) { 3027 *cs->statusp = resp->status = puterrno4(EACCES); 3028 goto out; 3029 } 3030 3031 /* 3032 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3033 * the file system is exported read-only -- regardless of 3034 * createdir flag. Otherwise the attrdir would be created 3035 * (assuming server fs isn't mounted readonly locally). If 3036 * VOP_LOOKUP returns ENOENT in this case, the error will 3037 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3038 * because specfs has no VOP_LOOKUP op, so the macro would 3039 * return ENOSYS. EINVAL is returned by all (current) 3040 * Solaris file system implementations when any of their 3041 * restrictions are violated (xattr(dir) can't have xattrdir). 3042 * Returning NOTSUPP is more appropriate in this case 3043 * because the object will never be able to have an attrdir. 3044 */ 3045 if (args->createdir && ! (exp_ro = rdonly4(req, cs))) 3046 lookup_flags |= CREATE_XATTR_DIR; 3047 3048 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3049 NULL, NULL, NULL); 3050 3051 if (error) { 3052 if (error == ENOENT && args->createdir && exp_ro) 3053 *cs->statusp = resp->status = puterrno4(EROFS); 3054 else if (error == EINVAL || error == ENOSYS) 3055 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3056 else 3057 *cs->statusp = resp->status = puterrno4(error); 3058 goto out; 3059 } 3060 3061 ASSERT(avp->v_flag & V_XATTRDIR); 3062 3063 error = makefh4(&cs->fh, avp, cs->exi); 3064 3065 if (error) { 3066 VN_RELE(avp); 3067 *cs->statusp = resp->status = puterrno4(error); 3068 goto out; 3069 } 3070 3071 VN_RELE(cs->vp); 3072 cs->vp = avp; 3073 3074 /* 3075 * There is no requirement for an attrdir fh flag 3076 * because the attrdir has a vnode flag to distinguish 3077 * it from regular (non-xattr) directories. The 3078 * FH4_ATTRDIR flag is set for future sanity checks. 3079 */ 3080 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3081 *cs->statusp = resp->status = NFS4_OK; 3082 3083 out: 3084 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3085 OPENATTR4res *, resp); 3086 } 3087 3088 static int 3089 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3090 caller_context_t *ct) 3091 { 3092 int error; 3093 int i; 3094 clock_t delaytime; 3095 3096 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3097 3098 /* 3099 * Don't block on mandatory locks. If this routine returns 3100 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3101 */ 3102 uio->uio_fmode = FNONBLOCK; 3103 3104 for (i = 0; i < rfs4_maxlock_tries; i++) { 3105 3106 3107 if (direction == FREAD) { 3108 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3109 error = VOP_READ(vp, uio, ioflag, cred, ct); 3110 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3111 } else { 3112 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3113 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3114 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3115 } 3116 3117 if (error != EAGAIN) 3118 break; 3119 3120 if (i < rfs4_maxlock_tries - 1) { 3121 delay(delaytime); 3122 delaytime *= 2; 3123 } 3124 } 3125 3126 return (error); 3127 } 3128 3129 /* ARGSUSED */ 3130 static void 3131 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3132 struct compound_state *cs) 3133 { 3134 READ4args *args = &argop->nfs_argop4_u.opread; 3135 READ4res *resp = &resop->nfs_resop4_u.opread; 3136 int error; 3137 int verror; 3138 vnode_t *vp; 3139 struct vattr va; 3140 struct iovec iov, *iovp = NULL; 3141 int iovcnt; 3142 struct uio uio; 3143 u_offset_t offset; 3144 bool_t *deleg = &cs->deleg; 3145 nfsstat4 stat; 3146 int in_crit = 0; 3147 mblk_t *mp = NULL; 3148 int alloc_err = 0; 3149 int rdma_used = 0; 3150 int loaned_buffers; 3151 caller_context_t ct; 3152 struct uio *uiop; 3153 3154 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3155 READ4args, args); 3156 3157 vp = cs->vp; 3158 if (vp == NULL) { 3159 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3160 goto out; 3161 } 3162 if (cs->access == CS_ACCESS_DENIED) { 3163 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3164 goto out; 3165 } 3166 3167 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3168 deleg, TRUE, &ct)) != NFS4_OK) { 3169 *cs->statusp = resp->status = stat; 3170 goto out; 3171 } 3172 3173 /* 3174 * Enter the critical region before calling VOP_RWLOCK 3175 * to avoid a deadlock with write requests. 3176 */ 3177 if (nbl_need_check(vp)) { 3178 nbl_start_crit(vp, RW_READER); 3179 in_crit = 1; 3180 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3181 &ct)) { 3182 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3183 goto out; 3184 } 3185 } 3186 3187 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3188 deleg, TRUE, &ct)) != NFS4_OK) { 3189 *cs->statusp = resp->status = stat; 3190 goto out; 3191 } 3192 3193 if (args->wlist) { 3194 if (args->count > clist_len(args->wlist)) { 3195 *cs->statusp = resp->status = NFS4ERR_INVAL; 3196 goto out; 3197 } 3198 rdma_used = 1; 3199 } 3200 3201 /* use loaned buffers for TCP */ 3202 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3203 3204 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3205 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3206 3207 /* 3208 * If we can't get the attributes, then we can't do the 3209 * right access checking. So, we'll fail the request. 3210 */ 3211 if (verror) { 3212 *cs->statusp = resp->status = puterrno4(verror); 3213 goto out; 3214 } 3215 3216 if (vp->v_type != VREG) { 3217 *cs->statusp = resp->status = 3218 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3219 goto out; 3220 } 3221 3222 if (crgetuid(cs->cr) != va.va_uid && 3223 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3224 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3225 *cs->statusp = resp->status = puterrno4(error); 3226 goto out; 3227 } 3228 3229 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3230 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3231 goto out; 3232 } 3233 3234 offset = args->offset; 3235 if (offset >= va.va_size) { 3236 *cs->statusp = resp->status = NFS4_OK; 3237 resp->eof = TRUE; 3238 resp->data_len = 0; 3239 resp->data_val = NULL; 3240 resp->mblk = NULL; 3241 /* RDMA */ 3242 resp->wlist = args->wlist; 3243 resp->wlist_len = resp->data_len; 3244 *cs->statusp = resp->status = NFS4_OK; 3245 if (resp->wlist) 3246 clist_zero_len(resp->wlist); 3247 goto out; 3248 } 3249 3250 if (args->count == 0) { 3251 *cs->statusp = resp->status = NFS4_OK; 3252 resp->eof = FALSE; 3253 resp->data_len = 0; 3254 resp->data_val = NULL; 3255 resp->mblk = NULL; 3256 /* RDMA */ 3257 resp->wlist = args->wlist; 3258 resp->wlist_len = resp->data_len; 3259 if (resp->wlist) 3260 clist_zero_len(resp->wlist); 3261 goto out; 3262 } 3263 3264 /* 3265 * Do not allocate memory more than maximum allowed 3266 * transfer size 3267 */ 3268 if (args->count > rfs4_tsize(req)) 3269 args->count = rfs4_tsize(req); 3270 3271 if (loaned_buffers) { 3272 uiop = (uio_t *)rfs_setup_xuio(vp); 3273 ASSERT(uiop != NULL); 3274 uiop->uio_segflg = UIO_SYSSPACE; 3275 uiop->uio_loffset = args->offset; 3276 uiop->uio_resid = args->count; 3277 3278 /* Jump to do the read if successful */ 3279 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3280 /* 3281 * Need to hold the vnode until after VOP_RETZCBUF() 3282 * is called. 3283 */ 3284 VN_HOLD(vp); 3285 goto doio_read; 3286 } 3287 3288 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3289 uiop->uio_loffset, int, uiop->uio_resid); 3290 3291 uiop->uio_extflg = 0; 3292 3293 /* failure to setup for zero copy */ 3294 rfs_free_xuio((void *)uiop); 3295 loaned_buffers = 0; 3296 } 3297 3298 /* 3299 * If returning data via RDMA Write, then grab the chunk list. If we 3300 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3301 */ 3302 if (rdma_used) { 3303 mp = NULL; 3304 (void) rdma_get_wchunk(req, &iov, args->wlist); 3305 uio.uio_iov = &iov; 3306 uio.uio_iovcnt = 1; 3307 } else { 3308 /* 3309 * mp will contain the data to be sent out in the read reply. 3310 * It will be freed after the reply has been sent. 3311 */ 3312 mp = rfs_read_alloc(args->count, &iovp, &iovcnt); 3313 ASSERT(mp != NULL); 3314 ASSERT(alloc_err == 0); 3315 uio.uio_iov = iovp; 3316 uio.uio_iovcnt = iovcnt; 3317 } 3318 3319 uio.uio_segflg = UIO_SYSSPACE; 3320 uio.uio_extflg = UIO_COPY_CACHED; 3321 uio.uio_loffset = args->offset; 3322 uio.uio_resid = args->count; 3323 uiop = &uio; 3324 3325 doio_read: 3326 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3327 3328 va.va_mask = AT_SIZE; 3329 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3330 3331 if (error) { 3332 if (mp) 3333 freemsg(mp); 3334 *cs->statusp = resp->status = puterrno4(error); 3335 goto out; 3336 } 3337 3338 /* make mblk using zc buffers */ 3339 if (loaned_buffers) { 3340 mp = uio_to_mblk(uiop); 3341 ASSERT(mp != NULL); 3342 } 3343 3344 *cs->statusp = resp->status = NFS4_OK; 3345 3346 ASSERT(uiop->uio_resid >= 0); 3347 resp->data_len = args->count - uiop->uio_resid; 3348 if (mp) { 3349 resp->data_val = (char *)mp->b_datap->db_base; 3350 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3351 } else { 3352 resp->data_val = (caddr_t)iov.iov_base; 3353 } 3354 3355 resp->mblk = mp; 3356 3357 if (!verror && offset + resp->data_len == va.va_size) 3358 resp->eof = TRUE; 3359 else 3360 resp->eof = FALSE; 3361 3362 if (rdma_used) { 3363 if (!rdma_setup_read_data4(args, resp)) { 3364 *cs->statusp = resp->status = NFS4ERR_INVAL; 3365 } 3366 } else { 3367 resp->wlist = NULL; 3368 } 3369 3370 out: 3371 if (in_crit) 3372 nbl_end_crit(vp); 3373 3374 if (iovp != NULL) 3375 kmem_free(iovp, iovcnt * sizeof (struct iovec)); 3376 3377 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3378 READ4res *, resp); 3379 } 3380 3381 static void 3382 rfs4_op_read_free(nfs_resop4 *resop) 3383 { 3384 READ4res *resp = &resop->nfs_resop4_u.opread; 3385 3386 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3387 freemsg(resp->mblk); 3388 resp->mblk = NULL; 3389 resp->data_val = NULL; 3390 resp->data_len = 0; 3391 } 3392 } 3393 3394 static void 3395 rfs4_op_readdir_free(nfs_resop4 * resop) 3396 { 3397 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3398 3399 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3400 freeb(resp->mblk); 3401 resp->mblk = NULL; 3402 resp->data_len = 0; 3403 } 3404 } 3405 3406 3407 /* ARGSUSED */ 3408 static void 3409 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3410 struct compound_state *cs) 3411 { 3412 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3413 int error; 3414 vnode_t *vp; 3415 struct exportinfo *exi, *sav_exi; 3416 nfs_fh4_fmt_t *fh_fmtp; 3417 3418 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3419 3420 if (cs->vp) { 3421 VN_RELE(cs->vp); 3422 cs->vp = NULL; 3423 } 3424 3425 if (cs->cr) 3426 crfree(cs->cr); 3427 3428 cs->cr = crdup(cs->basecr); 3429 3430 vp = exi_public->exi_vp; 3431 if (vp == NULL) { 3432 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3433 goto out; 3434 } 3435 3436 error = makefh4(&cs->fh, vp, exi_public); 3437 if (error != 0) { 3438 *cs->statusp = resp->status = puterrno4(error); 3439 goto out; 3440 } 3441 sav_exi = cs->exi; 3442 if (exi_public == exi_root) { 3443 /* 3444 * No filesystem is actually shared public, so we default 3445 * to exi_root. In this case, we must check whether root 3446 * is exported. 3447 */ 3448 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3449 3450 /* 3451 * if root filesystem is exported, the exportinfo struct that we 3452 * should use is what checkexport4 returns, because root_exi is 3453 * actually a mostly empty struct. 3454 */ 3455 exi = checkexport4(&fh_fmtp->fh4_fsid, 3456 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3457 cs->exi = ((exi != NULL) ? exi : exi_public); 3458 } else { 3459 /* 3460 * it's a properly shared filesystem 3461 */ 3462 cs->exi = exi_public; 3463 } 3464 3465 if (is_system_labeled()) { 3466 bslabel_t *clabel; 3467 3468 ASSERT(req->rq_label != NULL); 3469 clabel = req->rq_label; 3470 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3471 "got client label from request(1)", 3472 struct svc_req *, req); 3473 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3474 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3475 cs->exi)) { 3476 *cs->statusp = resp->status = 3477 NFS4ERR_SERVERFAULT; 3478 goto out; 3479 } 3480 } 3481 } 3482 3483 VN_HOLD(vp); 3484 cs->vp = vp; 3485 3486 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3487 VN_RELE(cs->vp); 3488 cs->vp = NULL; 3489 cs->exi = sav_exi; 3490 goto out; 3491 } 3492 3493 *cs->statusp = resp->status = NFS4_OK; 3494 out: 3495 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3496 PUTPUBFH4res *, resp); 3497 } 3498 3499 /* 3500 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3501 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3502 * or joe have restrictive search permissions, then we shouldn't let 3503 * the client get a file handle. This is easy to enforce. However, we 3504 * don't know what security flavor should be used until we resolve the 3505 * path name. Another complication is uid mapping. If root is 3506 * the user, then it will be mapped to the anonymous user by default, 3507 * but we won't know that till we've resolved the path name. And we won't 3508 * know what the anonymous user is. 3509 * Luckily, SECINFO is specified to take a full filename. 3510 * So what we will have to in rfs4_op_lookup is check that flavor of 3511 * the target object matches that of the request, and if root was the 3512 * caller, check for the root= and anon= options, and if necessary, 3513 * repeat the lookup using the right cred_t. But that's not done yet. 3514 */ 3515 /* ARGSUSED */ 3516 static void 3517 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3518 struct compound_state *cs) 3519 { 3520 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3521 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3522 nfs_fh4_fmt_t *fh_fmtp; 3523 3524 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3525 PUTFH4args *, args); 3526 3527 if (cs->vp) { 3528 VN_RELE(cs->vp); 3529 cs->vp = NULL; 3530 } 3531 3532 if (cs->cr) { 3533 crfree(cs->cr); 3534 cs->cr = NULL; 3535 } 3536 3537 3538 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3539 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3540 goto out; 3541 } 3542 3543 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3544 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3545 NULL); 3546 3547 if (cs->exi == NULL) { 3548 *cs->statusp = resp->status = NFS4ERR_STALE; 3549 goto out; 3550 } 3551 3552 cs->cr = crdup(cs->basecr); 3553 3554 ASSERT(cs->cr != NULL); 3555 3556 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3557 *cs->statusp = resp->status; 3558 goto out; 3559 } 3560 3561 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3562 VN_RELE(cs->vp); 3563 cs->vp = NULL; 3564 goto out; 3565 } 3566 3567 nfs_fh4_copy(&args->object, &cs->fh); 3568 *cs->statusp = resp->status = NFS4_OK; 3569 cs->deleg = FALSE; 3570 3571 out: 3572 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3573 PUTFH4res *, resp); 3574 } 3575 3576 /* ARGSUSED */ 3577 static void 3578 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3579 struct compound_state *cs) 3580 { 3581 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3582 int error; 3583 fid_t fid; 3584 struct exportinfo *exi, *sav_exi; 3585 3586 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3587 3588 if (cs->vp) { 3589 VN_RELE(cs->vp); 3590 cs->vp = NULL; 3591 } 3592 3593 if (cs->cr) 3594 crfree(cs->cr); 3595 3596 cs->cr = crdup(cs->basecr); 3597 3598 /* 3599 * Using rootdir, the system root vnode, 3600 * get its fid. 3601 */ 3602 bzero(&fid, sizeof (fid)); 3603 fid.fid_len = MAXFIDSZ; 3604 error = vop_fid_pseudo(rootdir, &fid); 3605 if (error != 0) { 3606 *cs->statusp = resp->status = puterrno4(error); 3607 goto out; 3608 } 3609 3610 /* 3611 * Then use the root fsid & fid it to find out if it's exported 3612 * 3613 * If the server root isn't exported directly, then 3614 * it should at least be a pseudo export based on 3615 * one or more exports further down in the server's 3616 * file tree. 3617 */ 3618 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3619 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3620 NFS4_DEBUG(rfs4_debug, 3621 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3622 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3623 goto out; 3624 } 3625 3626 /* 3627 * Now make a filehandle based on the root 3628 * export and root vnode. 3629 */ 3630 error = makefh4(&cs->fh, rootdir, exi); 3631 if (error != 0) { 3632 *cs->statusp = resp->status = puterrno4(error); 3633 goto out; 3634 } 3635 3636 sav_exi = cs->exi; 3637 cs->exi = exi; 3638 3639 VN_HOLD(rootdir); 3640 cs->vp = rootdir; 3641 3642 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3643 VN_RELE(rootdir); 3644 cs->vp = NULL; 3645 cs->exi = sav_exi; 3646 goto out; 3647 } 3648 3649 *cs->statusp = resp->status = NFS4_OK; 3650 cs->deleg = FALSE; 3651 out: 3652 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3653 PUTROOTFH4res *, resp); 3654 } 3655 3656 /* 3657 * set_rdattr_params sets up the variables used to manage what information 3658 * to get for each directory entry. 3659 */ 3660 static nfsstat4 3661 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3662 bitmap4 attrs, bool_t *need_to_lookup) 3663 { 3664 uint_t va_mask; 3665 nfsstat4 status; 3666 bitmap4 objbits; 3667 3668 status = bitmap4_to_attrmask(attrs, sargp); 3669 if (status != NFS4_OK) { 3670 /* 3671 * could not even figure attr mask 3672 */ 3673 return (status); 3674 } 3675 va_mask = sargp->vap->va_mask; 3676 3677 /* 3678 * dirent's d_ino is always correct value for mounted_on_fileid. 3679 * mntdfid_set is set once here, but mounted_on_fileid is 3680 * set in main dirent processing loop for each dirent. 3681 * The mntdfid_set is a simple optimization that lets the 3682 * server attr code avoid work when caller is readdir. 3683 */ 3684 sargp->mntdfid_set = TRUE; 3685 3686 /* 3687 * Lookup entry only if client asked for any of the following: 3688 * a) vattr attrs 3689 * b) vfs attrs 3690 * c) attrs w/per-object scope requested (change, filehandle, etc) 3691 * other than mounted_on_fileid (which we can take from dirent) 3692 */ 3693 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3694 3695 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3696 *need_to_lookup = TRUE; 3697 else 3698 *need_to_lookup = FALSE; 3699 3700 if (sargp->sbp == NULL) 3701 return (NFS4_OK); 3702 3703 /* 3704 * If filesystem attrs are requested, get them now from the 3705 * directory vp, as most entries will have same filesystem. The only 3706 * exception are mounted over entries but we handle 3707 * those as we go (XXX mounted over detection not yet implemented). 3708 */ 3709 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3710 status = bitmap4_get_sysattrs(sargp); 3711 sargp->vap->va_mask = va_mask; 3712 3713 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3714 /* 3715 * Failed to get filesystem attributes. 3716 * Return a rdattr_error for each entry, but don't fail. 3717 * However, don't get any obj-dependent attrs. 3718 */ 3719 sargp->rdattr_error = status; /* for rdattr_error */ 3720 *need_to_lookup = FALSE; 3721 /* 3722 * At least get fileid for regular readdir output 3723 */ 3724 sargp->vap->va_mask &= AT_NODEID; 3725 status = NFS4_OK; 3726 } 3727 3728 return (status); 3729 } 3730 3731 /* 3732 * readlink: args: CURRENT_FH. 3733 * res: status. If success - CURRENT_FH unchanged, return linktext. 3734 */ 3735 3736 /* ARGSUSED */ 3737 static void 3738 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3739 struct compound_state *cs) 3740 { 3741 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3742 int error; 3743 vnode_t *vp; 3744 struct iovec iov; 3745 struct vattr va; 3746 struct uio uio; 3747 char *data; 3748 struct sockaddr *ca; 3749 char *name = NULL; 3750 int is_referral; 3751 3752 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3753 3754 /* CURRENT_FH: directory */ 3755 vp = cs->vp; 3756 if (vp == NULL) { 3757 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3758 goto out; 3759 } 3760 3761 if (cs->access == CS_ACCESS_DENIED) { 3762 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3763 goto out; 3764 } 3765 3766 /* Is it a referral? */ 3767 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3768 3769 is_referral = 1; 3770 3771 } else { 3772 3773 is_referral = 0; 3774 3775 if (vp->v_type == VDIR) { 3776 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3777 goto out; 3778 } 3779 3780 if (vp->v_type != VLNK) { 3781 *cs->statusp = resp->status = NFS4ERR_INVAL; 3782 goto out; 3783 } 3784 3785 } 3786 3787 va.va_mask = AT_MODE; 3788 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3789 if (error) { 3790 *cs->statusp = resp->status = puterrno4(error); 3791 goto out; 3792 } 3793 3794 if (MANDLOCK(vp, va.va_mode)) { 3795 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3796 goto out; 3797 } 3798 3799 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3800 3801 if (is_referral) { 3802 char *s; 3803 size_t strsz; 3804 3805 /* Get an artificial symlink based on a referral */ 3806 s = build_symlink(vp, cs->cr, &strsz); 3807 global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++; 3808 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3809 vnode_t *, vp, char *, s); 3810 if (s == NULL) 3811 error = EINVAL; 3812 else { 3813 error = 0; 3814 (void) strlcpy(data, s, MAXPATHLEN + 1); 3815 kmem_free(s, strsz); 3816 } 3817 3818 } else { 3819 3820 iov.iov_base = data; 3821 iov.iov_len = MAXPATHLEN; 3822 uio.uio_iov = &iov; 3823 uio.uio_iovcnt = 1; 3824 uio.uio_segflg = UIO_SYSSPACE; 3825 uio.uio_extflg = UIO_COPY_CACHED; 3826 uio.uio_loffset = 0; 3827 uio.uio_resid = MAXPATHLEN; 3828 3829 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3830 3831 if (!error) 3832 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3833 } 3834 3835 if (error) { 3836 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3837 *cs->statusp = resp->status = puterrno4(error); 3838 goto out; 3839 } 3840 3841 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3842 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3843 MAXPATHLEN + 1); 3844 3845 if (name == NULL) { 3846 /* 3847 * Even though the conversion failed, we return 3848 * something. We just don't translate it. 3849 */ 3850 name = data; 3851 } 3852 3853 /* 3854 * treat link name as data 3855 */ 3856 (void) str_to_utf8(name, &resp->link); 3857 3858 if (name != data) 3859 kmem_free(name, MAXPATHLEN + 1); 3860 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3861 *cs->statusp = resp->status = NFS4_OK; 3862 3863 out: 3864 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3865 READLINK4res *, resp); 3866 } 3867 3868 static void 3869 rfs4_op_readlink_free(nfs_resop4 *resop) 3870 { 3871 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3872 utf8string *symlink = &resp->link; 3873 3874 if (symlink->utf8string_val) { 3875 UTF8STRING_FREE(*symlink) 3876 } 3877 } 3878 3879 /* 3880 * release_lockowner: 3881 * Release any state associated with the supplied 3882 * lockowner. Note if any lo_state is holding locks we will not 3883 * rele that lo_state and thus the lockowner will not be destroyed. 3884 * A client using lock after the lock owner stateid has been released 3885 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3886 * to reissue the lock with new_lock_owner set to TRUE. 3887 * args: lock_owner 3888 * res: status 3889 */ 3890 /* ARGSUSED */ 3891 static void 3892 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3893 struct svc_req *req, struct compound_state *cs) 3894 { 3895 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3896 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3897 rfs4_lockowner_t *lo; 3898 rfs4_openowner_t *oo; 3899 rfs4_state_t *sp; 3900 rfs4_lo_state_t *lsp; 3901 rfs4_client_t *cp; 3902 bool_t create = FALSE; 3903 locklist_t *llist; 3904 sysid_t sysid; 3905 3906 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3907 cs, RELEASE_LOCKOWNER4args *, ap); 3908 3909 /* Make sure there is a clientid around for this request */ 3910 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3911 3912 if (cp == NULL) { 3913 *cs->statusp = resp->status = 3914 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3915 goto out; 3916 } 3917 rfs4_client_rele(cp); 3918 3919 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3920 if (lo == NULL) { 3921 *cs->statusp = resp->status = NFS4_OK; 3922 goto out; 3923 } 3924 ASSERT(lo->rl_client != NULL); 3925 3926 /* 3927 * Check for EXPIRED client. If so will reap state with in a lease 3928 * period or on next set_clientid_confirm step 3929 */ 3930 if (rfs4_lease_expired(lo->rl_client)) { 3931 rfs4_lockowner_rele(lo); 3932 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3933 goto out; 3934 } 3935 3936 /* 3937 * If no sysid has been assigned, then no locks exist; just return. 3938 */ 3939 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3940 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 3941 rfs4_lockowner_rele(lo); 3942 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3943 goto out; 3944 } 3945 3946 sysid = lo->rl_client->rc_sysidt; 3947 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3948 3949 /* 3950 * Mark the lockowner invalid. 3951 */ 3952 rfs4_dbe_hide(lo->rl_dbe); 3953 3954 /* 3955 * sysid-pid pair should now not be used since the lockowner is 3956 * invalid. If the client were to instantiate the lockowner again 3957 * it would be assigned a new pid. Thus we can get the list of 3958 * current locks. 3959 */ 3960 3961 llist = flk_get_active_locks(sysid, lo->rl_pid); 3962 /* If we are still holding locks fail */ 3963 if (llist != NULL) { 3964 3965 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3966 3967 flk_free_locklist(llist); 3968 /* 3969 * We need to unhide the lockowner so the client can 3970 * try it again. The bad thing here is if the client 3971 * has a logic error that took it here in the first place 3972 * he probably has lost accounting of the locks that it 3973 * is holding. So we may have dangling state until the 3974 * open owner state is reaped via close. One scenario 3975 * that could possibly occur is that the client has 3976 * sent the unlock request(s) in separate threads 3977 * and has not waited for the replies before sending the 3978 * RELEASE_LOCKOWNER request. Presumably, it would expect 3979 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 3980 * reissuing the request. 3981 */ 3982 rfs4_dbe_unhide(lo->rl_dbe); 3983 rfs4_lockowner_rele(lo); 3984 goto out; 3985 } 3986 3987 /* 3988 * For the corresponding client we need to check each open 3989 * owner for any opens that have lockowner state associated 3990 * with this lockowner. 3991 */ 3992 3993 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3994 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 3995 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 3996 3997 rfs4_dbe_lock(oo->ro_dbe); 3998 for (sp = list_head(&oo->ro_statelist); sp != NULL; 3999 sp = list_next(&oo->ro_statelist, sp)) { 4000 4001 rfs4_dbe_lock(sp->rs_dbe); 4002 for (lsp = list_head(&sp->rs_lostatelist); 4003 lsp != NULL; 4004 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4005 if (lsp->rls_locker == lo) { 4006 rfs4_dbe_lock(lsp->rls_dbe); 4007 rfs4_dbe_invalidate(lsp->rls_dbe); 4008 rfs4_dbe_unlock(lsp->rls_dbe); 4009 } 4010 } 4011 rfs4_dbe_unlock(sp->rs_dbe); 4012 } 4013 rfs4_dbe_unlock(oo->ro_dbe); 4014 } 4015 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4016 4017 rfs4_lockowner_rele(lo); 4018 4019 *cs->statusp = resp->status = NFS4_OK; 4020 4021 out: 4022 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4023 cs, RELEASE_LOCKOWNER4res *, resp); 4024 } 4025 4026 /* 4027 * short utility function to lookup a file and recall the delegation 4028 */ 4029 static rfs4_file_t * 4030 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4031 int *lkup_error, cred_t *cr) 4032 { 4033 vnode_t *vp; 4034 rfs4_file_t *fp = NULL; 4035 bool_t fcreate = FALSE; 4036 int error; 4037 4038 if (vpp) 4039 *vpp = NULL; 4040 4041 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4042 NULL)) == 0) { 4043 if (vp->v_type == VREG) 4044 fp = rfs4_findfile(vp, NULL, &fcreate); 4045 if (vpp) 4046 *vpp = vp; 4047 else 4048 VN_RELE(vp); 4049 } 4050 4051 if (lkup_error) 4052 *lkup_error = error; 4053 4054 return (fp); 4055 } 4056 4057 /* 4058 * remove: args: CURRENT_FH: directory; name. 4059 * res: status. If success - CURRENT_FH unchanged, return change_info 4060 * for directory. 4061 */ 4062 /* ARGSUSED */ 4063 static void 4064 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4065 struct compound_state *cs) 4066 { 4067 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4068 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4069 int error; 4070 vnode_t *dvp, *vp; 4071 struct vattr bdva, idva, adva; 4072 char *nm; 4073 uint_t len; 4074 rfs4_file_t *fp; 4075 int in_crit = 0; 4076 bslabel_t *clabel; 4077 struct sockaddr *ca; 4078 char *name = NULL; 4079 nfsstat4 status; 4080 4081 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4082 REMOVE4args *, args); 4083 4084 /* CURRENT_FH: directory */ 4085 dvp = cs->vp; 4086 if (dvp == NULL) { 4087 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4088 goto out; 4089 } 4090 4091 if (cs->access == CS_ACCESS_DENIED) { 4092 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4093 goto out; 4094 } 4095 4096 /* 4097 * If there is an unshared filesystem mounted on this vnode, 4098 * Do not allow to remove anything in this directory. 4099 */ 4100 if (vn_ismntpt(dvp)) { 4101 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4102 goto out; 4103 } 4104 4105 if (dvp->v_type != VDIR) { 4106 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4107 goto out; 4108 } 4109 4110 status = utf8_dir_verify(&args->target); 4111 if (status != NFS4_OK) { 4112 *cs->statusp = resp->status = status; 4113 goto out; 4114 } 4115 4116 /* 4117 * Lookup the file so that we can check if it's a directory 4118 */ 4119 nm = utf8_to_fn(&args->target, &len, NULL); 4120 if (nm == NULL) { 4121 *cs->statusp = resp->status = NFS4ERR_INVAL; 4122 goto out; 4123 } 4124 4125 if (len > MAXNAMELEN) { 4126 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4127 kmem_free(nm, len); 4128 goto out; 4129 } 4130 4131 if (rdonly4(req, cs)) { 4132 *cs->statusp = resp->status = NFS4ERR_ROFS; 4133 kmem_free(nm, len); 4134 goto out; 4135 } 4136 4137 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4138 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4139 MAXPATHLEN + 1); 4140 4141 if (name == NULL) { 4142 *cs->statusp = resp->status = NFS4ERR_INVAL; 4143 kmem_free(nm, len); 4144 goto out; 4145 } 4146 4147 /* 4148 * Lookup the file to determine type and while we are see if 4149 * there is a file struct around and check for delegation. 4150 * We don't need to acquire va_seq before this lookup, if 4151 * it causes an update, cinfo.before will not match, which will 4152 * trigger a cache flush even if atomic is TRUE. 4153 */ 4154 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4155 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4156 NULL)) { 4157 VN_RELE(vp); 4158 rfs4_file_rele(fp); 4159 *cs->statusp = resp->status = NFS4ERR_DELAY; 4160 if (nm != name) 4161 kmem_free(name, MAXPATHLEN + 1); 4162 kmem_free(nm, len); 4163 goto out; 4164 } 4165 } 4166 4167 /* Didn't find anything to remove */ 4168 if (vp == NULL) { 4169 *cs->statusp = resp->status = error; 4170 if (nm != name) 4171 kmem_free(name, MAXPATHLEN + 1); 4172 kmem_free(nm, len); 4173 goto out; 4174 } 4175 4176 if (nbl_need_check(vp)) { 4177 nbl_start_crit(vp, RW_READER); 4178 in_crit = 1; 4179 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4180 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4181 if (nm != name) 4182 kmem_free(name, MAXPATHLEN + 1); 4183 kmem_free(nm, len); 4184 nbl_end_crit(vp); 4185 VN_RELE(vp); 4186 if (fp) { 4187 rfs4_clear_dont_grant(fp); 4188 rfs4_file_rele(fp); 4189 } 4190 goto out; 4191 } 4192 } 4193 4194 /* check label before allowing removal */ 4195 if (is_system_labeled()) { 4196 ASSERT(req->rq_label != NULL); 4197 clabel = req->rq_label; 4198 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4199 "got client label from request(1)", 4200 struct svc_req *, req); 4201 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4202 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4203 cs->exi)) { 4204 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4205 if (name != nm) 4206 kmem_free(name, MAXPATHLEN + 1); 4207 kmem_free(nm, len); 4208 if (in_crit) 4209 nbl_end_crit(vp); 4210 VN_RELE(vp); 4211 if (fp) { 4212 rfs4_clear_dont_grant(fp); 4213 rfs4_file_rele(fp); 4214 } 4215 goto out; 4216 } 4217 } 4218 } 4219 4220 /* Get dir "before" change value */ 4221 bdva.va_mask = AT_CTIME|AT_SEQ; 4222 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4223 if (error) { 4224 *cs->statusp = resp->status = puterrno4(error); 4225 if (nm != name) 4226 kmem_free(name, MAXPATHLEN + 1); 4227 kmem_free(nm, len); 4228 if (in_crit) 4229 nbl_end_crit(vp); 4230 VN_RELE(vp); 4231 if (fp) { 4232 rfs4_clear_dont_grant(fp); 4233 rfs4_file_rele(fp); 4234 } 4235 goto out; 4236 } 4237 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4238 4239 /* Actually do the REMOVE operation */ 4240 if (vp->v_type == VDIR) { 4241 /* 4242 * Can't remove a directory that has a mounted-on filesystem. 4243 */ 4244 if (vn_ismntpt(vp)) { 4245 error = EACCES; 4246 } else { 4247 /* 4248 * System V defines rmdir to return EEXIST, 4249 * not ENOTEMPTY, if the directory is not 4250 * empty. A System V NFS server needs to map 4251 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4252 * transmit over the wire. 4253 */ 4254 if ((error = VOP_RMDIR(dvp, name, rootdir, cs->cr, 4255 NULL, 0)) == EEXIST) 4256 error = ENOTEMPTY; 4257 } 4258 } else { 4259 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4260 fp != NULL) { 4261 struct vattr va; 4262 vnode_t *tvp; 4263 4264 rfs4_dbe_lock(fp->rf_dbe); 4265 tvp = fp->rf_vp; 4266 if (tvp) 4267 VN_HOLD(tvp); 4268 rfs4_dbe_unlock(fp->rf_dbe); 4269 4270 if (tvp) { 4271 /* 4272 * This is va_seq safe because we are not 4273 * manipulating dvp. 4274 */ 4275 va.va_mask = AT_NLINK; 4276 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4277 va.va_nlink == 0) { 4278 /* Remove state on file remove */ 4279 if (in_crit) { 4280 nbl_end_crit(vp); 4281 in_crit = 0; 4282 } 4283 rfs4_close_all_state(fp); 4284 } 4285 VN_RELE(tvp); 4286 } 4287 } 4288 } 4289 4290 if (in_crit) 4291 nbl_end_crit(vp); 4292 VN_RELE(vp); 4293 4294 if (fp) { 4295 rfs4_clear_dont_grant(fp); 4296 rfs4_file_rele(fp); 4297 } 4298 if (nm != name) 4299 kmem_free(name, MAXPATHLEN + 1); 4300 kmem_free(nm, len); 4301 4302 if (error) { 4303 *cs->statusp = resp->status = puterrno4(error); 4304 goto out; 4305 } 4306 4307 /* 4308 * Get the initial "after" sequence number, if it fails, set to zero 4309 */ 4310 idva.va_mask = AT_SEQ; 4311 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4312 idva.va_seq = 0; 4313 4314 /* 4315 * Force modified data and metadata out to stable storage. 4316 */ 4317 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4318 4319 /* 4320 * Get "after" change value, if it fails, simply return the 4321 * before value. 4322 */ 4323 adva.va_mask = AT_CTIME|AT_SEQ; 4324 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4325 adva.va_ctime = bdva.va_ctime; 4326 adva.va_seq = 0; 4327 } 4328 4329 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4330 4331 /* 4332 * The cinfo.atomic = TRUE only if we have 4333 * non-zero va_seq's, and it has incremented by exactly one 4334 * during the VOP_REMOVE/RMDIR and it didn't change during 4335 * the VOP_FSYNC. 4336 */ 4337 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4338 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4339 resp->cinfo.atomic = TRUE; 4340 else 4341 resp->cinfo.atomic = FALSE; 4342 4343 *cs->statusp = resp->status = NFS4_OK; 4344 4345 out: 4346 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4347 REMOVE4res *, resp); 4348 } 4349 4350 /* 4351 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4352 * oldname and newname. 4353 * res: status. If success - CURRENT_FH unchanged, return change_info 4354 * for both from and target directories. 4355 */ 4356 /* ARGSUSED */ 4357 static void 4358 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4359 struct compound_state *cs) 4360 { 4361 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4362 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4363 int error; 4364 vnode_t *odvp; 4365 vnode_t *ndvp; 4366 vnode_t *srcvp, *targvp; 4367 struct vattr obdva, oidva, oadva; 4368 struct vattr nbdva, nidva, nadva; 4369 char *onm, *nnm; 4370 uint_t olen, nlen; 4371 rfs4_file_t *fp, *sfp; 4372 int in_crit_src, in_crit_targ; 4373 int fp_rele_grant_hold, sfp_rele_grant_hold; 4374 bslabel_t *clabel; 4375 struct sockaddr *ca; 4376 char *converted_onm = NULL; 4377 char *converted_nnm = NULL; 4378 nfsstat4 status; 4379 4380 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4381 RENAME4args *, args); 4382 4383 fp = sfp = NULL; 4384 srcvp = targvp = NULL; 4385 in_crit_src = in_crit_targ = 0; 4386 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4387 4388 /* CURRENT_FH: target directory */ 4389 ndvp = cs->vp; 4390 if (ndvp == NULL) { 4391 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4392 goto out; 4393 } 4394 4395 /* SAVED_FH: from directory */ 4396 odvp = cs->saved_vp; 4397 if (odvp == NULL) { 4398 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4399 goto out; 4400 } 4401 4402 if (cs->access == CS_ACCESS_DENIED) { 4403 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4404 goto out; 4405 } 4406 4407 /* 4408 * If there is an unshared filesystem mounted on this vnode, 4409 * do not allow to rename objects in this directory. 4410 */ 4411 if (vn_ismntpt(odvp)) { 4412 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4413 goto out; 4414 } 4415 4416 /* 4417 * If there is an unshared filesystem mounted on this vnode, 4418 * do not allow to rename to this directory. 4419 */ 4420 if (vn_ismntpt(ndvp)) { 4421 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4422 goto out; 4423 } 4424 4425 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4426 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4427 goto out; 4428 } 4429 4430 if (cs->saved_exi != cs->exi) { 4431 *cs->statusp = resp->status = NFS4ERR_XDEV; 4432 goto out; 4433 } 4434 4435 status = utf8_dir_verify(&args->oldname); 4436 if (status != NFS4_OK) { 4437 *cs->statusp = resp->status = status; 4438 goto out; 4439 } 4440 4441 status = utf8_dir_verify(&args->newname); 4442 if (status != NFS4_OK) { 4443 *cs->statusp = resp->status = status; 4444 goto out; 4445 } 4446 4447 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4448 if (onm == NULL) { 4449 *cs->statusp = resp->status = NFS4ERR_INVAL; 4450 goto out; 4451 } 4452 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4453 nlen = MAXPATHLEN + 1; 4454 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4455 nlen); 4456 4457 if (converted_onm == NULL) { 4458 *cs->statusp = resp->status = NFS4ERR_INVAL; 4459 kmem_free(onm, olen); 4460 goto out; 4461 } 4462 4463 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4464 if (nnm == NULL) { 4465 *cs->statusp = resp->status = NFS4ERR_INVAL; 4466 if (onm != converted_onm) 4467 kmem_free(converted_onm, MAXPATHLEN + 1); 4468 kmem_free(onm, olen); 4469 goto out; 4470 } 4471 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4472 MAXPATHLEN + 1); 4473 4474 if (converted_nnm == NULL) { 4475 *cs->statusp = resp->status = NFS4ERR_INVAL; 4476 kmem_free(nnm, nlen); 4477 nnm = NULL; 4478 if (onm != converted_onm) 4479 kmem_free(converted_onm, MAXPATHLEN + 1); 4480 kmem_free(onm, olen); 4481 goto out; 4482 } 4483 4484 4485 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4486 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4487 kmem_free(onm, olen); 4488 kmem_free(nnm, nlen); 4489 goto out; 4490 } 4491 4492 4493 if (rdonly4(req, cs)) { 4494 *cs->statusp = resp->status = NFS4ERR_ROFS; 4495 if (onm != converted_onm) 4496 kmem_free(converted_onm, MAXPATHLEN + 1); 4497 kmem_free(onm, olen); 4498 if (nnm != converted_nnm) 4499 kmem_free(converted_nnm, MAXPATHLEN + 1); 4500 kmem_free(nnm, nlen); 4501 goto out; 4502 } 4503 4504 /* check label of the target dir */ 4505 if (is_system_labeled()) { 4506 ASSERT(req->rq_label != NULL); 4507 clabel = req->rq_label; 4508 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4509 "got client label from request(1)", 4510 struct svc_req *, req); 4511 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4512 if (!do_rfs_label_check(clabel, ndvp, 4513 EQUALITY_CHECK, cs->exi)) { 4514 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4515 goto err_out; 4516 } 4517 } 4518 } 4519 4520 /* 4521 * Is the source a file and have a delegation? 4522 * We don't need to acquire va_seq before these lookups, if 4523 * it causes an update, cinfo.before will not match, which will 4524 * trigger a cache flush even if atomic is TRUE. 4525 */ 4526 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4527 &error, cs->cr)) { 4528 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4529 NULL)) { 4530 *cs->statusp = resp->status = NFS4ERR_DELAY; 4531 goto err_out; 4532 } 4533 } 4534 4535 if (srcvp == NULL) { 4536 *cs->statusp = resp->status = puterrno4(error); 4537 if (onm != converted_onm) 4538 kmem_free(converted_onm, MAXPATHLEN + 1); 4539 kmem_free(onm, olen); 4540 if (nnm != converted_nnm) 4541 kmem_free(converted_nnm, MAXPATHLEN + 1); 4542 kmem_free(nnm, nlen); 4543 goto out; 4544 } 4545 4546 sfp_rele_grant_hold = 1; 4547 4548 /* Does the destination exist and a file and have a delegation? */ 4549 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4550 NULL, cs->cr)) { 4551 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4552 NULL)) { 4553 *cs->statusp = resp->status = NFS4ERR_DELAY; 4554 goto err_out; 4555 } 4556 } 4557 fp_rele_grant_hold = 1; 4558 4559 4560 /* Check for NBMAND lock on both source and target */ 4561 if (nbl_need_check(srcvp)) { 4562 nbl_start_crit(srcvp, RW_READER); 4563 in_crit_src = 1; 4564 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4565 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4566 goto err_out; 4567 } 4568 } 4569 4570 if (targvp && nbl_need_check(targvp)) { 4571 nbl_start_crit(targvp, RW_READER); 4572 in_crit_targ = 1; 4573 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4574 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4575 goto err_out; 4576 } 4577 } 4578 4579 /* Get source "before" change value */ 4580 obdva.va_mask = AT_CTIME|AT_SEQ; 4581 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4582 if (!error) { 4583 nbdva.va_mask = AT_CTIME|AT_SEQ; 4584 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4585 } 4586 if (error) { 4587 *cs->statusp = resp->status = puterrno4(error); 4588 goto err_out; 4589 } 4590 4591 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4592 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4593 4594 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4595 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4596 struct vattr va; 4597 vnode_t *tvp; 4598 4599 rfs4_dbe_lock(fp->rf_dbe); 4600 tvp = fp->rf_vp; 4601 if (tvp) 4602 VN_HOLD(tvp); 4603 rfs4_dbe_unlock(fp->rf_dbe); 4604 4605 if (tvp) { 4606 va.va_mask = AT_NLINK; 4607 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4608 va.va_nlink == 0) { 4609 /* The file is gone and so should the state */ 4610 if (in_crit_targ) { 4611 nbl_end_crit(targvp); 4612 in_crit_targ = 0; 4613 } 4614 rfs4_close_all_state(fp); 4615 } 4616 VN_RELE(tvp); 4617 } 4618 } 4619 if (error == 0) 4620 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4621 4622 if (in_crit_src) 4623 nbl_end_crit(srcvp); 4624 if (srcvp) 4625 VN_RELE(srcvp); 4626 if (in_crit_targ) 4627 nbl_end_crit(targvp); 4628 if (targvp) 4629 VN_RELE(targvp); 4630 4631 if (sfp) { 4632 rfs4_clear_dont_grant(sfp); 4633 rfs4_file_rele(sfp); 4634 } 4635 if (fp) { 4636 rfs4_clear_dont_grant(fp); 4637 rfs4_file_rele(fp); 4638 } 4639 4640 if (converted_onm != onm) 4641 kmem_free(converted_onm, MAXPATHLEN + 1); 4642 kmem_free(onm, olen); 4643 if (converted_nnm != nnm) 4644 kmem_free(converted_nnm, MAXPATHLEN + 1); 4645 kmem_free(nnm, nlen); 4646 4647 /* 4648 * Get the initial "after" sequence number, if it fails, set to zero 4649 */ 4650 oidva.va_mask = AT_SEQ; 4651 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4652 oidva.va_seq = 0; 4653 4654 nidva.va_mask = AT_SEQ; 4655 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4656 nidva.va_seq = 0; 4657 4658 /* 4659 * Force modified data and metadata out to stable storage. 4660 */ 4661 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4662 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4663 4664 if (error) { 4665 *cs->statusp = resp->status = puterrno4(error); 4666 goto out; 4667 } 4668 4669 /* 4670 * Get "after" change values, if it fails, simply return the 4671 * before value. 4672 */ 4673 oadva.va_mask = AT_CTIME|AT_SEQ; 4674 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4675 oadva.va_ctime = obdva.va_ctime; 4676 oadva.va_seq = 0; 4677 } 4678 4679 nadva.va_mask = AT_CTIME|AT_SEQ; 4680 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4681 nadva.va_ctime = nbdva.va_ctime; 4682 nadva.va_seq = 0; 4683 } 4684 4685 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4686 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4687 4688 /* 4689 * The cinfo.atomic = TRUE only if we have 4690 * non-zero va_seq's, and it has incremented by exactly one 4691 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4692 */ 4693 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4694 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4695 resp->source_cinfo.atomic = TRUE; 4696 else 4697 resp->source_cinfo.atomic = FALSE; 4698 4699 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4700 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4701 resp->target_cinfo.atomic = TRUE; 4702 else 4703 resp->target_cinfo.atomic = FALSE; 4704 4705 #ifdef VOLATILE_FH_TEST 4706 { 4707 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4708 4709 /* 4710 * Add the renamed file handle to the volatile rename list 4711 */ 4712 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4713 /* file handles may expire on rename */ 4714 vnode_t *vp; 4715 4716 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4717 /* 4718 * Already know that nnm will be a valid string 4719 */ 4720 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4721 NULL, NULL, NULL); 4722 kmem_free(nnm, nlen); 4723 if (!error) { 4724 add_volrnm_fh(cs->exi, vp); 4725 VN_RELE(vp); 4726 } 4727 } 4728 } 4729 #endif /* VOLATILE_FH_TEST */ 4730 4731 *cs->statusp = resp->status = NFS4_OK; 4732 out: 4733 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4734 RENAME4res *, resp); 4735 return; 4736 4737 err_out: 4738 if (onm != converted_onm) 4739 kmem_free(converted_onm, MAXPATHLEN + 1); 4740 if (onm != NULL) 4741 kmem_free(onm, olen); 4742 if (nnm != converted_nnm) 4743 kmem_free(converted_nnm, MAXPATHLEN + 1); 4744 if (nnm != NULL) 4745 kmem_free(nnm, nlen); 4746 4747 if (in_crit_src) nbl_end_crit(srcvp); 4748 if (in_crit_targ) nbl_end_crit(targvp); 4749 if (targvp) VN_RELE(targvp); 4750 if (srcvp) VN_RELE(srcvp); 4751 if (sfp) { 4752 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4753 rfs4_file_rele(sfp); 4754 } 4755 if (fp) { 4756 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4757 rfs4_file_rele(fp); 4758 } 4759 4760 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4761 RENAME4res *, resp); 4762 } 4763 4764 /* ARGSUSED */ 4765 static void 4766 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4767 struct compound_state *cs) 4768 { 4769 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4770 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4771 rfs4_client_t *cp; 4772 4773 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4774 RENEW4args *, args); 4775 4776 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4777 *cs->statusp = resp->status = 4778 rfs4_check_clientid(&args->clientid, 0); 4779 goto out; 4780 } 4781 4782 if (rfs4_lease_expired(cp)) { 4783 rfs4_client_rele(cp); 4784 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4785 goto out; 4786 } 4787 4788 rfs4_update_lease(cp); 4789 4790 mutex_enter(cp->rc_cbinfo.cb_lock); 4791 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 4792 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 4793 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4794 } else { 4795 *cs->statusp = resp->status = NFS4_OK; 4796 } 4797 mutex_exit(cp->rc_cbinfo.cb_lock); 4798 4799 rfs4_client_rele(cp); 4800 4801 out: 4802 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4803 RENEW4res *, resp); 4804 } 4805 4806 /* ARGSUSED */ 4807 static void 4808 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4809 struct compound_state *cs) 4810 { 4811 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4812 4813 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4814 4815 /* No need to check cs->access - we are not accessing any object */ 4816 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4817 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4818 goto out; 4819 } 4820 if (cs->vp != NULL) { 4821 VN_RELE(cs->vp); 4822 } 4823 cs->vp = cs->saved_vp; 4824 cs->saved_vp = NULL; 4825 cs->exi = cs->saved_exi; 4826 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4827 *cs->statusp = resp->status = NFS4_OK; 4828 cs->deleg = FALSE; 4829 4830 out: 4831 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4832 RESTOREFH4res *, resp); 4833 } 4834 4835 /* ARGSUSED */ 4836 static void 4837 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4838 struct compound_state *cs) 4839 { 4840 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4841 4842 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4843 4844 /* No need to check cs->access - we are not accessing any object */ 4845 if (cs->vp == NULL) { 4846 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4847 goto out; 4848 } 4849 if (cs->saved_vp != NULL) { 4850 VN_RELE(cs->saved_vp); 4851 } 4852 cs->saved_vp = cs->vp; 4853 VN_HOLD(cs->saved_vp); 4854 cs->saved_exi = cs->exi; 4855 /* 4856 * since SAVEFH is fairly rare, don't alloc space for its fh 4857 * unless necessary. 4858 */ 4859 if (cs->saved_fh.nfs_fh4_val == NULL) { 4860 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4861 } 4862 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4863 *cs->statusp = resp->status = NFS4_OK; 4864 4865 out: 4866 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4867 SAVEFH4res *, resp); 4868 } 4869 4870 /* 4871 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4872 * return the bitmap of attrs that were set successfully. It is also 4873 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4874 * always be called only after rfs4_do_set_attrs(). 4875 * 4876 * Verify that the attributes are same as the expected ones. sargp->vap 4877 * and sargp->sbp contain the input attributes as translated from fattr4. 4878 * 4879 * This function verifies only the attrs that correspond to a vattr or 4880 * vfsstat struct. That is because of the extra step needed to get the 4881 * corresponding system structs. Other attributes have already been set or 4882 * verified by do_rfs4_set_attrs. 4883 * 4884 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4885 */ 4886 static int 4887 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4888 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4889 { 4890 int error, ret_error = 0; 4891 int i, k; 4892 uint_t sva_mask = sargp->vap->va_mask; 4893 uint_t vbit; 4894 union nfs4_attr_u *na; 4895 uint8_t *amap; 4896 bool_t getsb = ntovp->vfsstat; 4897 4898 if (sva_mask != 0) { 4899 /* 4900 * Okay to overwrite sargp->vap because we verify based 4901 * on the incoming values. 4902 */ 4903 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4904 sargp->cs->cr, NULL); 4905 if (ret_error) { 4906 if (resp == NULL) 4907 return (ret_error); 4908 /* 4909 * Must return bitmap of successful attrs 4910 */ 4911 sva_mask = 0; /* to prevent checking vap later */ 4912 } else { 4913 /* 4914 * Some file systems clobber va_mask. it is probably 4915 * wrong of them to do so, nonethless we practice 4916 * defensive coding. 4917 * See bug id 4276830. 4918 */ 4919 sargp->vap->va_mask = sva_mask; 4920 } 4921 } 4922 4923 if (getsb) { 4924 /* 4925 * Now get the superblock and loop on the bitmap, as there is 4926 * no simple way of translating from superblock to bitmap4. 4927 */ 4928 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4929 if (ret_error) { 4930 if (resp == NULL) 4931 goto errout; 4932 getsb = FALSE; 4933 } 4934 } 4935 4936 /* 4937 * Now loop and verify each attribute which getattr returned 4938 * whether it's the same as the input. 4939 */ 4940 if (resp == NULL && !getsb && (sva_mask == 0)) 4941 goto errout; 4942 4943 na = ntovp->na; 4944 amap = ntovp->amap; 4945 k = 0; 4946 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4947 k = *amap; 4948 ASSERT(nfs4_ntov_map[k].nval == k); 4949 vbit = nfs4_ntov_map[k].vbit; 4950 4951 /* 4952 * If vattr attribute but VOP_GETATTR failed, or it's 4953 * superblock attribute but VFS_STATVFS failed, skip 4954 */ 4955 if (vbit) { 4956 if ((vbit & sva_mask) == 0) 4957 continue; 4958 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4959 continue; 4960 } 4961 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4962 if (resp != NULL) { 4963 if (error) 4964 ret_error = -1; /* not all match */ 4965 else /* update response bitmap */ 4966 *resp |= nfs4_ntov_map[k].fbit; 4967 continue; 4968 } 4969 if (error) { 4970 ret_error = -1; /* not all match */ 4971 break; 4972 } 4973 } 4974 errout: 4975 return (ret_error); 4976 } 4977 4978 /* 4979 * Decode the attribute to be set/verified. If the attr requires a sys op 4980 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 4981 * call the sv_getit function for it, because the sys op hasn't yet been done. 4982 * Return 0 for success, error code if failed. 4983 * 4984 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 4985 */ 4986 static int 4987 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 4988 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 4989 { 4990 int error = 0; 4991 bool_t set_later; 4992 4993 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 4994 4995 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 4996 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 4997 /* 4998 * don't verify yet if a vattr or sb dependent attr, 4999 * because we don't have their sys values yet. 5000 * Will be done later. 5001 */ 5002 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 5003 /* 5004 * ACLs are a special case, since setting the MODE 5005 * conflicts with setting the ACL. We delay setting 5006 * the ACL until all other attributes have been set. 5007 * The ACL gets set in do_rfs4_op_setattr(). 5008 */ 5009 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5010 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5011 sargp, nap); 5012 if (error) { 5013 xdr_free(nfs4_ntov_map[k].xfunc, 5014 (caddr_t)nap); 5015 } 5016 } 5017 } 5018 } else { 5019 #ifdef DEBUG 5020 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5021 "decoding attribute %d\n", k); 5022 #endif 5023 error = EINVAL; 5024 } 5025 if (!error && resp_bval && !set_later) { 5026 *resp_bval |= nfs4_ntov_map[k].fbit; 5027 } 5028 5029 return (error); 5030 } 5031 5032 /* 5033 * Set vattr based on incoming fattr4 attrs - used by setattr. 5034 * Set response mask. Ignore any values that are not writable vattr attrs. 5035 */ 5036 static nfsstat4 5037 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5038 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5039 nfs4_attr_cmd_t cmd) 5040 { 5041 int error = 0; 5042 int i; 5043 char *attrs = fattrp->attrlist4; 5044 uint32_t attrslen = fattrp->attrlist4_len; 5045 XDR xdr; 5046 nfsstat4 status = NFS4_OK; 5047 vnode_t *vp = cs->vp; 5048 union nfs4_attr_u *na; 5049 uint8_t *amap; 5050 5051 #ifndef lint 5052 /* 5053 * Make sure that maximum attribute number can be expressed as an 5054 * 8 bit quantity. 5055 */ 5056 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5057 #endif 5058 5059 if (vp == NULL) { 5060 if (resp) 5061 *resp = 0; 5062 return (NFS4ERR_NOFILEHANDLE); 5063 } 5064 if (cs->access == CS_ACCESS_DENIED) { 5065 if (resp) 5066 *resp = 0; 5067 return (NFS4ERR_ACCESS); 5068 } 5069 5070 sargp->op = cmd; 5071 sargp->cs = cs; 5072 sargp->flag = 0; /* may be set later */ 5073 sargp->vap->va_mask = 0; 5074 sargp->rdattr_error = NFS4_OK; 5075 sargp->rdattr_error_req = FALSE; 5076 /* sargp->sbp is set by the caller */ 5077 5078 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5079 5080 na = ntovp->na; 5081 amap = ntovp->amap; 5082 5083 /* 5084 * The following loop iterates on the nfs4_ntov_map checking 5085 * if the fbit is set in the requested bitmap. 5086 * If set then we process the arguments using the 5087 * rfs4_fattr4 conversion functions to populate the setattr 5088 * vattr and va_mask. Any settable attrs that are not using vattr 5089 * will be set in this loop. 5090 */ 5091 for (i = 0; i < nfs4_ntov_map_size; i++) { 5092 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5093 continue; 5094 } 5095 /* 5096 * If setattr, must be a writable attr. 5097 * If verify/nverify, must be a readable attr. 5098 */ 5099 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5100 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5101 /* 5102 * Client tries to set/verify an 5103 * unsupported attribute, tries to set 5104 * a read only attr or verify a write 5105 * only one - error! 5106 */ 5107 break; 5108 } 5109 /* 5110 * Decode the attribute to set/verify 5111 */ 5112 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5113 &xdr, resp ? resp : NULL, na); 5114 if (error) 5115 break; 5116 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5117 na++; 5118 (ntovp->attrcnt)++; 5119 if (nfs4_ntov_map[i].vfsstat) 5120 ntovp->vfsstat = TRUE; 5121 } 5122 5123 if (error != 0) 5124 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5125 puterrno4(error)); 5126 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5127 return (status); 5128 } 5129 5130 static nfsstat4 5131 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5132 stateid4 *stateid) 5133 { 5134 int error = 0; 5135 struct nfs4_svgetit_arg sarg; 5136 bool_t trunc; 5137 5138 nfsstat4 status = NFS4_OK; 5139 cred_t *cr = cs->cr; 5140 vnode_t *vp = cs->vp; 5141 struct nfs4_ntov_table ntov; 5142 struct statvfs64 sb; 5143 struct vattr bva; 5144 struct flock64 bf; 5145 int in_crit = 0; 5146 uint_t saved_mask = 0; 5147 caller_context_t ct; 5148 5149 *resp = 0; 5150 sarg.sbp = &sb; 5151 sarg.is_referral = B_FALSE; 5152 nfs4_ntov_table_init(&ntov); 5153 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5154 NFS4ATTR_SETIT); 5155 if (status != NFS4_OK) { 5156 /* 5157 * failed set attrs 5158 */ 5159 goto done; 5160 } 5161 if ((sarg.vap->va_mask == 0) && 5162 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5163 /* 5164 * no further work to be done 5165 */ 5166 goto done; 5167 } 5168 5169 /* 5170 * If we got a request to set the ACL and the MODE, only 5171 * allow changing VSUID, VSGID, and VSVTX. Attempting 5172 * to change any other bits, along with setting an ACL, 5173 * gives NFS4ERR_INVAL. 5174 */ 5175 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5176 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5177 vattr_t va; 5178 5179 va.va_mask = AT_MODE; 5180 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5181 if (error) { 5182 status = puterrno4(error); 5183 goto done; 5184 } 5185 if ((sarg.vap->va_mode ^ va.va_mode) & 5186 ~(VSUID | VSGID | VSVTX)) { 5187 status = NFS4ERR_INVAL; 5188 goto done; 5189 } 5190 } 5191 5192 /* Check stateid only if size has been set */ 5193 if (sarg.vap->va_mask & AT_SIZE) { 5194 trunc = (sarg.vap->va_size == 0); 5195 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5196 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5197 if (status != NFS4_OK) 5198 goto done; 5199 } else { 5200 ct.cc_sysid = 0; 5201 ct.cc_pid = 0; 5202 ct.cc_caller_id = nfs4_srv_caller_id; 5203 ct.cc_flags = CC_DONTBLOCK; 5204 } 5205 5206 /* XXX start of possible race with delegations */ 5207 5208 /* 5209 * We need to specially handle size changes because it is 5210 * possible for the client to create a file with read-only 5211 * modes, but with the file opened for writing. If the client 5212 * then tries to set the file size, e.g. ftruncate(3C), 5213 * fcntl(F_FREESP), the normal access checking done in 5214 * VOP_SETATTR would prevent the client from doing it even though 5215 * it should be allowed to do so. To get around this, we do the 5216 * access checking for ourselves and use VOP_SPACE which doesn't 5217 * do the access checking. 5218 * Also the client should not be allowed to change the file 5219 * size if there is a conflicting non-blocking mandatory lock in 5220 * the region of the change. 5221 */ 5222 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5223 u_offset_t offset; 5224 ssize_t length; 5225 5226 /* 5227 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5228 * before returning, sarg.vap->va_mask is used to 5229 * generate the setattr reply bitmap. We also clear 5230 * AT_SIZE below before calling VOP_SPACE. For both 5231 * of these cases, the va_mask needs to be saved here 5232 * and restored after calling VOP_SETATTR. 5233 */ 5234 saved_mask = sarg.vap->va_mask; 5235 5236 /* 5237 * Check any possible conflict due to NBMAND locks. 5238 * Get into critical region before VOP_GETATTR, so the 5239 * size attribute is valid when checking conflicts. 5240 */ 5241 if (nbl_need_check(vp)) { 5242 nbl_start_crit(vp, RW_READER); 5243 in_crit = 1; 5244 } 5245 5246 bva.va_mask = AT_UID|AT_SIZE; 5247 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5248 status = puterrno4(error); 5249 goto done; 5250 } 5251 5252 if (in_crit) { 5253 if (sarg.vap->va_size < bva.va_size) { 5254 offset = sarg.vap->va_size; 5255 length = bva.va_size - sarg.vap->va_size; 5256 } else { 5257 offset = bva.va_size; 5258 length = sarg.vap->va_size - bva.va_size; 5259 } 5260 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5261 &ct)) { 5262 status = NFS4ERR_LOCKED; 5263 goto done; 5264 } 5265 } 5266 5267 if (crgetuid(cr) == bva.va_uid) { 5268 sarg.vap->va_mask &= ~AT_SIZE; 5269 bf.l_type = F_WRLCK; 5270 bf.l_whence = 0; 5271 bf.l_start = (off64_t)sarg.vap->va_size; 5272 bf.l_len = 0; 5273 bf.l_sysid = 0; 5274 bf.l_pid = 0; 5275 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5276 (offset_t)sarg.vap->va_size, cr, &ct); 5277 } 5278 } 5279 5280 if (!error && sarg.vap->va_mask != 0) 5281 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5282 5283 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5284 if (saved_mask & AT_SIZE) 5285 sarg.vap->va_mask |= AT_SIZE; 5286 5287 /* 5288 * If an ACL was being set, it has been delayed until now, 5289 * in order to set the mode (via the VOP_SETATTR() above) first. 5290 */ 5291 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5292 int i; 5293 5294 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5295 if (ntov.amap[i] == FATTR4_ACL) 5296 break; 5297 if (i < NFS4_MAXNUM_ATTRS) { 5298 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5299 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5300 if (error == 0) { 5301 *resp |= FATTR4_ACL_MASK; 5302 } else if (error == ENOTSUP) { 5303 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5304 status = NFS4ERR_ATTRNOTSUPP; 5305 goto done; 5306 } 5307 } else { 5308 NFS4_DEBUG(rfs4_debug, 5309 (CE_NOTE, "do_rfs4_op_setattr: " 5310 "unable to find ACL in fattr4")); 5311 error = EINVAL; 5312 } 5313 } 5314 5315 if (error) { 5316 /* check if a monitor detected a delegation conflict */ 5317 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5318 status = NFS4ERR_DELAY; 5319 else 5320 status = puterrno4(error); 5321 5322 /* 5323 * Set the response bitmap when setattr failed. 5324 * If VOP_SETATTR partially succeeded, test by doing a 5325 * VOP_GETATTR on the object and comparing the data 5326 * to the setattr arguments. 5327 */ 5328 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5329 } else { 5330 /* 5331 * Force modified metadata out to stable storage. 5332 */ 5333 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5334 /* 5335 * Set response bitmap 5336 */ 5337 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5338 } 5339 5340 /* Return early and already have a NFSv4 error */ 5341 done: 5342 /* 5343 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5344 * conversion sets both readable and writeable NFS4 attrs 5345 * for AT_MTIME and AT_ATIME. The line below masks out 5346 * unrequested attrs from the setattr result bitmap. This 5347 * is placed after the done: label to catch the ATTRNOTSUP 5348 * case. 5349 */ 5350 *resp &= fattrp->attrmask; 5351 5352 if (in_crit) 5353 nbl_end_crit(vp); 5354 5355 nfs4_ntov_table_free(&ntov, &sarg); 5356 5357 return (status); 5358 } 5359 5360 /* ARGSUSED */ 5361 static void 5362 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5363 struct compound_state *cs) 5364 { 5365 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5366 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5367 bslabel_t *clabel; 5368 5369 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5370 SETATTR4args *, args); 5371 5372 if (cs->vp == NULL) { 5373 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5374 goto out; 5375 } 5376 5377 /* 5378 * If there is an unshared filesystem mounted on this vnode, 5379 * do not allow to setattr on this vnode. 5380 */ 5381 if (vn_ismntpt(cs->vp)) { 5382 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5383 goto out; 5384 } 5385 5386 resp->attrsset = 0; 5387 5388 if (rdonly4(req, cs)) { 5389 *cs->statusp = resp->status = NFS4ERR_ROFS; 5390 goto out; 5391 } 5392 5393 /* check label before setting attributes */ 5394 if (is_system_labeled()) { 5395 ASSERT(req->rq_label != NULL); 5396 clabel = req->rq_label; 5397 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5398 "got client label from request(1)", 5399 struct svc_req *, req); 5400 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5401 if (!do_rfs_label_check(clabel, cs->vp, 5402 EQUALITY_CHECK, cs->exi)) { 5403 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5404 goto out; 5405 } 5406 } 5407 } 5408 5409 *cs->statusp = resp->status = 5410 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5411 &args->stateid); 5412 5413 out: 5414 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5415 SETATTR4res *, resp); 5416 } 5417 5418 /* ARGSUSED */ 5419 static void 5420 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5421 struct compound_state *cs) 5422 { 5423 /* 5424 * verify and nverify are exactly the same, except that nverify 5425 * succeeds when some argument changed, and verify succeeds when 5426 * when none changed. 5427 */ 5428 5429 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5430 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5431 5432 int error; 5433 struct nfs4_svgetit_arg sarg; 5434 struct statvfs64 sb; 5435 struct nfs4_ntov_table ntov; 5436 5437 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5438 VERIFY4args *, args); 5439 5440 if (cs->vp == NULL) { 5441 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5442 goto out; 5443 } 5444 5445 sarg.sbp = &sb; 5446 sarg.is_referral = B_FALSE; 5447 nfs4_ntov_table_init(&ntov); 5448 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5449 &sarg, &ntov, NFS4ATTR_VERIT); 5450 if (resp->status != NFS4_OK) { 5451 /* 5452 * do_rfs4_set_attrs will try to verify systemwide attrs, 5453 * so could return -1 for "no match". 5454 */ 5455 if (resp->status == -1) 5456 resp->status = NFS4ERR_NOT_SAME; 5457 goto done; 5458 } 5459 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5460 switch (error) { 5461 case 0: 5462 resp->status = NFS4_OK; 5463 break; 5464 case -1: 5465 resp->status = NFS4ERR_NOT_SAME; 5466 break; 5467 default: 5468 resp->status = puterrno4(error); 5469 break; 5470 } 5471 done: 5472 *cs->statusp = resp->status; 5473 nfs4_ntov_table_free(&ntov, &sarg); 5474 out: 5475 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5476 VERIFY4res *, resp); 5477 } 5478 5479 /* ARGSUSED */ 5480 static void 5481 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5482 struct compound_state *cs) 5483 { 5484 /* 5485 * verify and nverify are exactly the same, except that nverify 5486 * succeeds when some argument changed, and verify succeeds when 5487 * when none changed. 5488 */ 5489 5490 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5491 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5492 5493 int error; 5494 struct nfs4_svgetit_arg sarg; 5495 struct statvfs64 sb; 5496 struct nfs4_ntov_table ntov; 5497 5498 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5499 NVERIFY4args *, args); 5500 5501 if (cs->vp == NULL) { 5502 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5503 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5504 NVERIFY4res *, resp); 5505 return; 5506 } 5507 sarg.sbp = &sb; 5508 sarg.is_referral = B_FALSE; 5509 nfs4_ntov_table_init(&ntov); 5510 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5511 &sarg, &ntov, NFS4ATTR_VERIT); 5512 if (resp->status != NFS4_OK) { 5513 /* 5514 * do_rfs4_set_attrs will try to verify systemwide attrs, 5515 * so could return -1 for "no match". 5516 */ 5517 if (resp->status == -1) 5518 resp->status = NFS4_OK; 5519 goto done; 5520 } 5521 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5522 switch (error) { 5523 case 0: 5524 resp->status = NFS4ERR_SAME; 5525 break; 5526 case -1: 5527 resp->status = NFS4_OK; 5528 break; 5529 default: 5530 resp->status = puterrno4(error); 5531 break; 5532 } 5533 done: 5534 *cs->statusp = resp->status; 5535 nfs4_ntov_table_free(&ntov, &sarg); 5536 5537 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5538 NVERIFY4res *, resp); 5539 } 5540 5541 /* 5542 * XXX - This should live in an NFS header file. 5543 */ 5544 #define MAX_IOVECS 12 5545 5546 /* ARGSUSED */ 5547 static void 5548 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5549 struct compound_state *cs) 5550 { 5551 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5552 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5553 int error; 5554 vnode_t *vp; 5555 struct vattr bva; 5556 u_offset_t rlimit; 5557 struct uio uio; 5558 struct iovec iov[MAX_IOVECS]; 5559 struct iovec *iovp; 5560 int iovcnt; 5561 int ioflag; 5562 cred_t *savecred, *cr; 5563 bool_t *deleg = &cs->deleg; 5564 nfsstat4 stat; 5565 int in_crit = 0; 5566 caller_context_t ct; 5567 5568 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5569 WRITE4args *, args); 5570 5571 vp = cs->vp; 5572 if (vp == NULL) { 5573 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5574 goto out; 5575 } 5576 if (cs->access == CS_ACCESS_DENIED) { 5577 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5578 goto out; 5579 } 5580 5581 cr = cs->cr; 5582 5583 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5584 deleg, TRUE, &ct)) != NFS4_OK) { 5585 *cs->statusp = resp->status = stat; 5586 goto out; 5587 } 5588 5589 /* 5590 * We have to enter the critical region before calling VOP_RWLOCK 5591 * to avoid a deadlock with ufs. 5592 */ 5593 if (nbl_need_check(vp)) { 5594 nbl_start_crit(vp, RW_READER); 5595 in_crit = 1; 5596 if (nbl_conflict(vp, NBL_WRITE, 5597 args->offset, args->data_len, 0, &ct)) { 5598 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5599 goto out; 5600 } 5601 } 5602 5603 bva.va_mask = AT_MODE | AT_UID; 5604 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5605 5606 /* 5607 * If we can't get the attributes, then we can't do the 5608 * right access checking. So, we'll fail the request. 5609 */ 5610 if (error) { 5611 *cs->statusp = resp->status = puterrno4(error); 5612 goto out; 5613 } 5614 5615 if (rdonly4(req, cs)) { 5616 *cs->statusp = resp->status = NFS4ERR_ROFS; 5617 goto out; 5618 } 5619 5620 if (vp->v_type != VREG) { 5621 *cs->statusp = resp->status = 5622 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5623 goto out; 5624 } 5625 5626 if (crgetuid(cr) != bva.va_uid && 5627 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5628 *cs->statusp = resp->status = puterrno4(error); 5629 goto out; 5630 } 5631 5632 if (MANDLOCK(vp, bva.va_mode)) { 5633 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5634 goto out; 5635 } 5636 5637 if (args->data_len == 0) { 5638 *cs->statusp = resp->status = NFS4_OK; 5639 resp->count = 0; 5640 resp->committed = args->stable; 5641 resp->writeverf = Write4verf; 5642 goto out; 5643 } 5644 5645 if (args->mblk != NULL) { 5646 mblk_t *m; 5647 uint_t bytes, round_len; 5648 5649 iovcnt = 0; 5650 bytes = 0; 5651 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5652 for (m = args->mblk; 5653 m != NULL && bytes < round_len; 5654 m = m->b_cont) { 5655 iovcnt++; 5656 bytes += MBLKL(m); 5657 } 5658 #ifdef DEBUG 5659 /* should have ended on an mblk boundary */ 5660 if (bytes != round_len) { 5661 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5662 bytes, round_len, args->data_len); 5663 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5664 (void *)args->mblk, (void *)m); 5665 ASSERT(bytes == round_len); 5666 } 5667 #endif 5668 if (iovcnt <= MAX_IOVECS) { 5669 iovp = iov; 5670 } else { 5671 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5672 } 5673 mblk_to_iov(args->mblk, iovcnt, iovp); 5674 } else if (args->rlist != NULL) { 5675 iovcnt = 1; 5676 iovp = iov; 5677 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5678 iovp->iov_len = args->data_len; 5679 } else { 5680 iovcnt = 1; 5681 iovp = iov; 5682 iovp->iov_base = args->data_val; 5683 iovp->iov_len = args->data_len; 5684 } 5685 5686 uio.uio_iov = iovp; 5687 uio.uio_iovcnt = iovcnt; 5688 5689 uio.uio_segflg = UIO_SYSSPACE; 5690 uio.uio_extflg = UIO_COPY_DEFAULT; 5691 uio.uio_loffset = args->offset; 5692 uio.uio_resid = args->data_len; 5693 uio.uio_llimit = curproc->p_fsz_ctl; 5694 rlimit = uio.uio_llimit - args->offset; 5695 if (rlimit < (u_offset_t)uio.uio_resid) 5696 uio.uio_resid = (int)rlimit; 5697 5698 if (args->stable == UNSTABLE4) 5699 ioflag = 0; 5700 else if (args->stable == FILE_SYNC4) 5701 ioflag = FSYNC; 5702 else if (args->stable == DATA_SYNC4) 5703 ioflag = FDSYNC; 5704 else { 5705 if (iovp != iov) 5706 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5707 *cs->statusp = resp->status = NFS4ERR_INVAL; 5708 goto out; 5709 } 5710 5711 /* 5712 * We're changing creds because VM may fault and we need 5713 * the cred of the current thread to be used if quota 5714 * checking is enabled. 5715 */ 5716 savecred = curthread->t_cred; 5717 curthread->t_cred = cr; 5718 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5719 curthread->t_cred = savecred; 5720 5721 if (iovp != iov) 5722 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5723 5724 if (error) { 5725 *cs->statusp = resp->status = puterrno4(error); 5726 goto out; 5727 } 5728 5729 *cs->statusp = resp->status = NFS4_OK; 5730 resp->count = args->data_len - uio.uio_resid; 5731 5732 if (ioflag == 0) 5733 resp->committed = UNSTABLE4; 5734 else 5735 resp->committed = FILE_SYNC4; 5736 5737 resp->writeverf = Write4verf; 5738 5739 out: 5740 if (in_crit) 5741 nbl_end_crit(vp); 5742 5743 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5744 WRITE4res *, resp); 5745 } 5746 5747 5748 /* XXX put in a header file */ 5749 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5750 5751 void 5752 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5753 struct svc_req *req, cred_t *cr, int *rv) 5754 { 5755 uint_t i; 5756 struct compound_state cs; 5757 5758 if (rv != NULL) 5759 *rv = 0; 5760 rfs4_init_compound_state(&cs); 5761 /* 5762 * Form a reply tag by copying over the reqeuest tag. 5763 */ 5764 resp->tag.utf8string_val = 5765 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5766 resp->tag.utf8string_len = args->tag.utf8string_len; 5767 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5768 resp->tag.utf8string_len); 5769 5770 cs.statusp = &resp->status; 5771 cs.req = req; 5772 resp->array = NULL; 5773 resp->array_len = 0; 5774 5775 /* 5776 * XXX for now, minorversion should be zero 5777 */ 5778 if (args->minorversion != NFS4_MINORVERSION) { 5779 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5780 &cs, COMPOUND4args *, args); 5781 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5782 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5783 &cs, COMPOUND4res *, resp); 5784 return; 5785 } 5786 5787 if (args->array_len == 0) { 5788 resp->status = NFS4_OK; 5789 return; 5790 } 5791 5792 ASSERT(exi == NULL); 5793 ASSERT(cr == NULL); 5794 5795 cr = crget(); 5796 ASSERT(cr != NULL); 5797 5798 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5799 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5800 &cs, COMPOUND4args *, args); 5801 crfree(cr); 5802 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5803 &cs, COMPOUND4res *, resp); 5804 svcerr_badcred(req->rq_xprt); 5805 if (rv != NULL) 5806 *rv = 1; 5807 return; 5808 } 5809 resp->array_len = args->array_len; 5810 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5811 KM_SLEEP); 5812 5813 cs.basecr = cr; 5814 5815 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5816 COMPOUND4args *, args); 5817 5818 /* 5819 * For now, NFS4 compound processing must be protected by 5820 * exported_lock because it can access more than one exportinfo 5821 * per compound and share/unshare can now change multiple 5822 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5823 * per proc (excluding public exinfo), and exi_count design 5824 * is sufficient to protect concurrent execution of NFS2/3 5825 * ops along with unexport. This lock will be removed as 5826 * part of the NFSv4 phase 2 namespace redesign work. 5827 */ 5828 rw_enter(&exported_lock, RW_READER); 5829 5830 /* 5831 * If this is the first compound we've seen, we need to start all 5832 * new instances' grace periods. 5833 */ 5834 if (rfs4_seen_first_compound == 0) { 5835 rfs4_grace_start_new(); 5836 /* 5837 * This must be set after rfs4_grace_start_new(), otherwise 5838 * another thread could proceed past here before the former 5839 * is finished. 5840 */ 5841 rfs4_seen_first_compound = 1; 5842 } 5843 5844 for (i = 0; i < args->array_len && cs.cont; i++) { 5845 nfs_argop4 *argop; 5846 nfs_resop4 *resop; 5847 uint_t op; 5848 5849 argop = &args->array[i]; 5850 resop = &resp->array[i]; 5851 resop->resop = argop->argop; 5852 op = (uint_t)resop->resop; 5853 5854 if (op < rfsv4disp_cnt) { 5855 /* 5856 * Count the individual ops here; NULL and COMPOUND 5857 * are counted in common_dispatch() 5858 */ 5859 rfsproccnt_v4_ptr[op].value.ui64++; 5860 5861 NFS4_DEBUG(rfs4_debug > 1, 5862 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5863 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5864 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5865 rfs4_op_string[op], *cs.statusp)); 5866 if (*cs.statusp != NFS4_OK) 5867 cs.cont = FALSE; 5868 } else { 5869 /* 5870 * This is effectively dead code since XDR code 5871 * will have already returned BADXDR if op doesn't 5872 * decode to legal value. This only done for a 5873 * day when XDR code doesn't verify v4 opcodes. 5874 */ 5875 op = OP_ILLEGAL; 5876 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5877 5878 rfs4_op_illegal(argop, resop, req, &cs); 5879 cs.cont = FALSE; 5880 } 5881 5882 /* 5883 * If not at last op, and if we are to stop, then 5884 * compact the results array. 5885 */ 5886 if ((i + 1) < args->array_len && !cs.cont) { 5887 nfs_resop4 *new_res = kmem_alloc( 5888 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5889 bcopy(resp->array, 5890 new_res, (i+1) * sizeof (nfs_resop4)); 5891 kmem_free(resp->array, 5892 args->array_len * sizeof (nfs_resop4)); 5893 5894 resp->array_len = i + 1; 5895 resp->array = new_res; 5896 } 5897 } 5898 5899 rw_exit(&exported_lock); 5900 5901 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5902 COMPOUND4res *, resp); 5903 5904 if (cs.vp) 5905 VN_RELE(cs.vp); 5906 if (cs.saved_vp) 5907 VN_RELE(cs.saved_vp); 5908 if (cs.saved_fh.nfs_fh4_val) 5909 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5910 5911 if (cs.basecr) 5912 crfree(cs.basecr); 5913 if (cs.cr) 5914 crfree(cs.cr); 5915 /* 5916 * done with this compound request, free the label 5917 */ 5918 5919 if (req->rq_label != NULL) { 5920 kmem_free(req->rq_label, sizeof (bslabel_t)); 5921 req->rq_label = NULL; 5922 } 5923 } 5924 5925 /* 5926 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5927 * XXX zero out the tag and array values. Need to investigate why the 5928 * XXX calls occur, but at least prevent the panic for now. 5929 */ 5930 void 5931 rfs4_compound_free(COMPOUND4res *resp) 5932 { 5933 uint_t i; 5934 5935 if (resp->tag.utf8string_val) { 5936 UTF8STRING_FREE(resp->tag) 5937 } 5938 5939 for (i = 0; i < resp->array_len; i++) { 5940 nfs_resop4 *resop; 5941 uint_t op; 5942 5943 resop = &resp->array[i]; 5944 op = (uint_t)resop->resop; 5945 if (op < rfsv4disp_cnt) { 5946 (*rfsv4disptab[op].dis_resfree)(resop); 5947 } 5948 } 5949 if (resp->array != NULL) { 5950 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5951 } 5952 } 5953 5954 /* 5955 * Process the value of the compound request rpc flags, as a bit-AND 5956 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5957 */ 5958 void 5959 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 5960 { 5961 int i; 5962 int flag = RPC_ALL; 5963 5964 for (i = 0; flag && i < args->array_len; i++) { 5965 uint_t op; 5966 5967 op = (uint_t)args->array[i].argop; 5968 5969 if (op < rfsv4disp_cnt) 5970 flag &= rfsv4disptab[op].dis_flags; 5971 else 5972 flag = 0; 5973 } 5974 *flagp = flag; 5975 } 5976 5977 nfsstat4 5978 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 5979 { 5980 nfsstat4 e; 5981 5982 rfs4_dbe_lock(cp->rc_dbe); 5983 5984 if (cp->rc_sysidt != LM_NOSYSID) { 5985 *sp = cp->rc_sysidt; 5986 e = NFS4_OK; 5987 5988 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 5989 *sp = cp->rc_sysidt; 5990 e = NFS4_OK; 5991 5992 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 5993 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 5994 } else 5995 e = NFS4ERR_DELAY; 5996 5997 rfs4_dbe_unlock(cp->rc_dbe); 5998 return (e); 5999 } 6000 6001 #if defined(DEBUG) && ! defined(lint) 6002 static void lock_print(char *str, int operation, struct flock64 *flk) 6003 { 6004 char *op, *type; 6005 6006 switch (operation) { 6007 case F_GETLK: op = "F_GETLK"; 6008 break; 6009 case F_SETLK: op = "F_SETLK"; 6010 break; 6011 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6012 break; 6013 default: op = "F_UNKNOWN"; 6014 break; 6015 } 6016 switch (flk->l_type) { 6017 case F_UNLCK: type = "F_UNLCK"; 6018 break; 6019 case F_RDLCK: type = "F_RDLCK"; 6020 break; 6021 case F_WRLCK: type = "F_WRLCK"; 6022 break; 6023 default: type = "F_UNKNOWN"; 6024 break; 6025 } 6026 6027 ASSERT(flk->l_whence == 0); 6028 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6029 str, op, type, (longlong_t)flk->l_start, 6030 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6031 } 6032 6033 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6034 #else 6035 #define LOCK_PRINT(d, s, t, f) 6036 #endif 6037 6038 /*ARGSUSED*/ 6039 static bool_t 6040 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6041 { 6042 return (TRUE); 6043 } 6044 6045 /* 6046 * Look up the pathname using the vp in cs as the directory vnode. 6047 * cs->vp will be the vnode for the file on success 6048 */ 6049 6050 static nfsstat4 6051 rfs4_lookup(component4 *component, struct svc_req *req, 6052 struct compound_state *cs) 6053 { 6054 char *nm; 6055 uint32_t len; 6056 nfsstat4 status; 6057 struct sockaddr *ca; 6058 char *name; 6059 6060 if (cs->vp == NULL) { 6061 return (NFS4ERR_NOFILEHANDLE); 6062 } 6063 if (cs->vp->v_type != VDIR) { 6064 return (NFS4ERR_NOTDIR); 6065 } 6066 6067 status = utf8_dir_verify(component); 6068 if (status != NFS4_OK) 6069 return (status); 6070 6071 nm = utf8_to_fn(component, &len, NULL); 6072 if (nm == NULL) { 6073 return (NFS4ERR_INVAL); 6074 } 6075 6076 if (len > MAXNAMELEN) { 6077 kmem_free(nm, len); 6078 return (NFS4ERR_NAMETOOLONG); 6079 } 6080 6081 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6082 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6083 MAXPATHLEN + 1); 6084 6085 if (name == NULL) { 6086 kmem_free(nm, len); 6087 return (NFS4ERR_INVAL); 6088 } 6089 6090 status = do_rfs4_op_lookup(name, req, cs); 6091 6092 if (name != nm) 6093 kmem_free(name, MAXPATHLEN + 1); 6094 6095 kmem_free(nm, len); 6096 6097 return (status); 6098 } 6099 6100 static nfsstat4 6101 rfs4_lookupfile(component4 *component, struct svc_req *req, 6102 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6103 { 6104 nfsstat4 status; 6105 vnode_t *dvp = cs->vp; 6106 vattr_t bva, ava, fva; 6107 int error; 6108 6109 /* Get "before" change value */ 6110 bva.va_mask = AT_CTIME|AT_SEQ; 6111 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6112 if (error) 6113 return (puterrno4(error)); 6114 6115 /* rfs4_lookup may VN_RELE directory */ 6116 VN_HOLD(dvp); 6117 6118 status = rfs4_lookup(component, req, cs); 6119 if (status != NFS4_OK) { 6120 VN_RELE(dvp); 6121 return (status); 6122 } 6123 6124 /* 6125 * Get "after" change value, if it fails, simply return the 6126 * before value. 6127 */ 6128 ava.va_mask = AT_CTIME|AT_SEQ; 6129 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6130 ava.va_ctime = bva.va_ctime; 6131 ava.va_seq = 0; 6132 } 6133 VN_RELE(dvp); 6134 6135 /* 6136 * Validate the file is a file 6137 */ 6138 fva.va_mask = AT_TYPE|AT_MODE; 6139 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6140 if (error) 6141 return (puterrno4(error)); 6142 6143 if (fva.va_type != VREG) { 6144 if (fva.va_type == VDIR) 6145 return (NFS4ERR_ISDIR); 6146 if (fva.va_type == VLNK) 6147 return (NFS4ERR_SYMLINK); 6148 return (NFS4ERR_INVAL); 6149 } 6150 6151 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6152 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6153 6154 /* 6155 * It is undefined if VOP_LOOKUP will change va_seq, so 6156 * cinfo.atomic = TRUE only if we have 6157 * non-zero va_seq's, and they have not changed. 6158 */ 6159 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6160 cinfo->atomic = TRUE; 6161 else 6162 cinfo->atomic = FALSE; 6163 6164 /* Check for mandatory locking */ 6165 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6166 return (check_open_access(access, cs, req)); 6167 } 6168 6169 static nfsstat4 6170 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6171 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6172 { 6173 int error; 6174 nfsstat4 status = NFS4_OK; 6175 vattr_t va; 6176 6177 tryagain: 6178 6179 /* 6180 * The file open mode used is VWRITE. If the client needs 6181 * some other semantic, then it should do the access checking 6182 * itself. It would have been nice to have the file open mode 6183 * passed as part of the arguments. 6184 */ 6185 6186 *created = TRUE; 6187 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6188 6189 if (error) { 6190 *created = FALSE; 6191 6192 /* 6193 * If we got something other than file already exists 6194 * then just return this error. Otherwise, we got 6195 * EEXIST. If we were doing a GUARDED create, then 6196 * just return this error. Otherwise, we need to 6197 * make sure that this wasn't a duplicate of an 6198 * exclusive create request. 6199 * 6200 * The assumption is made that a non-exclusive create 6201 * request will never return EEXIST. 6202 */ 6203 6204 if (error != EEXIST || mode == GUARDED4) { 6205 status = puterrno4(error); 6206 return (status); 6207 } 6208 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6209 NULL, NULL, NULL); 6210 6211 if (error) { 6212 /* 6213 * We couldn't find the file that we thought that 6214 * we just created. So, we'll just try creating 6215 * it again. 6216 */ 6217 if (error == ENOENT) 6218 goto tryagain; 6219 6220 status = puterrno4(error); 6221 return (status); 6222 } 6223 6224 if (mode == UNCHECKED4) { 6225 /* existing object must be regular file */ 6226 if ((*vpp)->v_type != VREG) { 6227 if ((*vpp)->v_type == VDIR) 6228 status = NFS4ERR_ISDIR; 6229 else if ((*vpp)->v_type == VLNK) 6230 status = NFS4ERR_SYMLINK; 6231 else 6232 status = NFS4ERR_INVAL; 6233 VN_RELE(*vpp); 6234 return (status); 6235 } 6236 6237 return (NFS4_OK); 6238 } 6239 6240 /* Check for duplicate request */ 6241 ASSERT(mtime != 0); 6242 va.va_mask = AT_MTIME; 6243 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6244 if (!error) { 6245 /* We found the file */ 6246 if (va.va_mtime.tv_sec != mtime->tv_sec || 6247 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6248 /* but its not our creation */ 6249 VN_RELE(*vpp); 6250 return (NFS4ERR_EXIST); 6251 } 6252 *created = TRUE; /* retrans of create == created */ 6253 return (NFS4_OK); 6254 } 6255 VN_RELE(*vpp); 6256 return (NFS4ERR_EXIST); 6257 } 6258 6259 return (NFS4_OK); 6260 } 6261 6262 static nfsstat4 6263 check_open_access(uint32_t access, struct compound_state *cs, 6264 struct svc_req *req) 6265 { 6266 int error; 6267 vnode_t *vp; 6268 bool_t readonly; 6269 cred_t *cr = cs->cr; 6270 6271 /* For now we don't allow mandatory locking as per V2/V3 */ 6272 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6273 return (NFS4ERR_ACCESS); 6274 } 6275 6276 vp = cs->vp; 6277 ASSERT(cr != NULL && vp->v_type == VREG); 6278 6279 /* 6280 * If the file system is exported read only and we are trying 6281 * to open for write, then return NFS4ERR_ROFS 6282 */ 6283 6284 readonly = rdonly4(req, cs); 6285 6286 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6287 return (NFS4ERR_ROFS); 6288 6289 if (access & OPEN4_SHARE_ACCESS_READ) { 6290 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6291 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6292 return (NFS4ERR_ACCESS); 6293 } 6294 } 6295 6296 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6297 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6298 if (error) 6299 return (NFS4ERR_ACCESS); 6300 } 6301 6302 return (NFS4_OK); 6303 } 6304 6305 static nfsstat4 6306 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6307 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6308 { 6309 struct nfs4_svgetit_arg sarg; 6310 struct nfs4_ntov_table ntov; 6311 6312 bool_t ntov_table_init = FALSE; 6313 struct statvfs64 sb; 6314 nfsstat4 status; 6315 vnode_t *vp; 6316 vattr_t bva, ava, iva, cva, *vap; 6317 vnode_t *dvp; 6318 timespec32_t *mtime; 6319 char *nm = NULL; 6320 uint_t buflen; 6321 bool_t created; 6322 bool_t setsize = FALSE; 6323 len_t reqsize; 6324 int error; 6325 bool_t trunc; 6326 caller_context_t ct; 6327 component4 *component; 6328 bslabel_t *clabel; 6329 struct sockaddr *ca; 6330 char *name = NULL; 6331 6332 sarg.sbp = &sb; 6333 sarg.is_referral = B_FALSE; 6334 6335 dvp = cs->vp; 6336 6337 /* Check if the file system is read only */ 6338 if (rdonly4(req, cs)) 6339 return (NFS4ERR_ROFS); 6340 6341 /* check the label of including directory */ 6342 if (is_system_labeled()) { 6343 ASSERT(req->rq_label != NULL); 6344 clabel = req->rq_label; 6345 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6346 "got client label from request(1)", 6347 struct svc_req *, req); 6348 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6349 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6350 cs->exi)) { 6351 return (NFS4ERR_ACCESS); 6352 } 6353 } 6354 } 6355 6356 /* 6357 * Get the last component of path name in nm. cs will reference 6358 * the including directory on success. 6359 */ 6360 component = &args->open_claim4_u.file; 6361 status = utf8_dir_verify(component); 6362 if (status != NFS4_OK) 6363 return (status); 6364 6365 nm = utf8_to_fn(component, &buflen, NULL); 6366 6367 if (nm == NULL) 6368 return (NFS4ERR_RESOURCE); 6369 6370 if (buflen > MAXNAMELEN) { 6371 kmem_free(nm, buflen); 6372 return (NFS4ERR_NAMETOOLONG); 6373 } 6374 6375 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6376 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6377 if (error) { 6378 kmem_free(nm, buflen); 6379 return (puterrno4(error)); 6380 } 6381 6382 if (bva.va_type != VDIR) { 6383 kmem_free(nm, buflen); 6384 return (NFS4ERR_NOTDIR); 6385 } 6386 6387 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6388 6389 switch (args->mode) { 6390 case GUARDED4: 6391 /*FALLTHROUGH*/ 6392 case UNCHECKED4: 6393 nfs4_ntov_table_init(&ntov); 6394 ntov_table_init = TRUE; 6395 6396 *attrset = 0; 6397 status = do_rfs4_set_attrs(attrset, 6398 &args->createhow4_u.createattrs, 6399 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6400 6401 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6402 sarg.vap->va_type != VREG) { 6403 if (sarg.vap->va_type == VDIR) 6404 status = NFS4ERR_ISDIR; 6405 else if (sarg.vap->va_type == VLNK) 6406 status = NFS4ERR_SYMLINK; 6407 else 6408 status = NFS4ERR_INVAL; 6409 } 6410 6411 if (status != NFS4_OK) { 6412 kmem_free(nm, buflen); 6413 nfs4_ntov_table_free(&ntov, &sarg); 6414 *attrset = 0; 6415 return (status); 6416 } 6417 6418 vap = sarg.vap; 6419 vap->va_type = VREG; 6420 vap->va_mask |= AT_TYPE; 6421 6422 if ((vap->va_mask & AT_MODE) == 0) { 6423 vap->va_mask |= AT_MODE; 6424 vap->va_mode = (mode_t)0600; 6425 } 6426 6427 if (vap->va_mask & AT_SIZE) { 6428 6429 /* Disallow create with a non-zero size */ 6430 6431 if ((reqsize = sarg.vap->va_size) != 0) { 6432 kmem_free(nm, buflen); 6433 nfs4_ntov_table_free(&ntov, &sarg); 6434 *attrset = 0; 6435 return (NFS4ERR_INVAL); 6436 } 6437 setsize = TRUE; 6438 } 6439 break; 6440 6441 case EXCLUSIVE4: 6442 /* prohibit EXCL create of named attributes */ 6443 if (dvp->v_flag & V_XATTRDIR) { 6444 kmem_free(nm, buflen); 6445 *attrset = 0; 6446 return (NFS4ERR_INVAL); 6447 } 6448 6449 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6450 cva.va_type = VREG; 6451 /* 6452 * Ensure no time overflows. Assumes underlying 6453 * filesystem supports at least 32 bits. 6454 * Truncate nsec to usec resolution to allow valid 6455 * compares even if the underlying filesystem truncates. 6456 */ 6457 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6458 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6459 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6460 cva.va_mode = (mode_t)0; 6461 vap = &cva; 6462 6463 /* 6464 * For EXCL create, attrset is set to the server attr 6465 * used to cache the client's verifier. 6466 */ 6467 *attrset = FATTR4_TIME_MODIFY_MASK; 6468 break; 6469 } 6470 6471 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6472 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6473 MAXPATHLEN + 1); 6474 6475 if (name == NULL) { 6476 kmem_free(nm, buflen); 6477 return (NFS4ERR_SERVERFAULT); 6478 } 6479 6480 status = create_vnode(dvp, name, vap, args->mode, mtime, 6481 cs->cr, &vp, &created); 6482 if (nm != name) 6483 kmem_free(name, MAXPATHLEN + 1); 6484 kmem_free(nm, buflen); 6485 6486 if (status != NFS4_OK) { 6487 if (ntov_table_init) 6488 nfs4_ntov_table_free(&ntov, &sarg); 6489 *attrset = 0; 6490 return (status); 6491 } 6492 6493 trunc = (setsize && !created); 6494 6495 if (args->mode != EXCLUSIVE4) { 6496 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6497 6498 /* 6499 * True verification that object was created with correct 6500 * attrs is impossible. The attrs could have been changed 6501 * immediately after object creation. If attributes did 6502 * not verify, the only recourse for the server is to 6503 * destroy the object. Maybe if some attrs (like gid) 6504 * are set incorrectly, the object should be destroyed; 6505 * however, seems bad as a default policy. Do we really 6506 * want to destroy an object over one of the times not 6507 * verifying correctly? For these reasons, the server 6508 * currently sets bits in attrset for createattrs 6509 * that were set; however, no verification is done. 6510 * 6511 * vmask_to_nmask accounts for vattr bits set on create 6512 * [do_rfs4_set_attrs() only sets resp bits for 6513 * non-vattr/vfs bits.] 6514 * Mask off any bits we set by default so as not to return 6515 * more attrset bits than were requested in createattrs 6516 */ 6517 if (created) { 6518 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6519 *attrset &= createmask; 6520 } else { 6521 /* 6522 * We did not create the vnode (we tried but it 6523 * already existed). In this case, the only createattr 6524 * that the spec allows the server to set is size, 6525 * and even then, it can only be set if it is 0. 6526 */ 6527 *attrset = 0; 6528 if (trunc) 6529 *attrset = FATTR4_SIZE_MASK; 6530 } 6531 } 6532 if (ntov_table_init) 6533 nfs4_ntov_table_free(&ntov, &sarg); 6534 6535 /* 6536 * Get the initial "after" sequence number, if it fails, 6537 * set to zero, time to before. 6538 */ 6539 iva.va_mask = AT_CTIME|AT_SEQ; 6540 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6541 iva.va_seq = 0; 6542 iva.va_ctime = bva.va_ctime; 6543 } 6544 6545 /* 6546 * create_vnode attempts to create the file exclusive, 6547 * if it already exists the VOP_CREATE will fail and 6548 * may not increase va_seq. It is atomic if 6549 * we haven't changed the directory, but if it has changed 6550 * we don't know what changed it. 6551 */ 6552 if (!created) { 6553 if (bva.va_seq && iva.va_seq && 6554 bva.va_seq == iva.va_seq) 6555 cinfo->atomic = TRUE; 6556 else 6557 cinfo->atomic = FALSE; 6558 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6559 } else { 6560 /* 6561 * The entry was created, we need to sync the 6562 * directory metadata. 6563 */ 6564 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6565 6566 /* 6567 * Get "after" change value, if it fails, simply return the 6568 * before value. 6569 */ 6570 ava.va_mask = AT_CTIME|AT_SEQ; 6571 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6572 ava.va_ctime = bva.va_ctime; 6573 ava.va_seq = 0; 6574 } 6575 6576 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6577 6578 /* 6579 * The cinfo->atomic = TRUE only if we have 6580 * non-zero va_seq's, and it has incremented by exactly one 6581 * during the create_vnode and it didn't 6582 * change during the VOP_FSYNC. 6583 */ 6584 if (bva.va_seq && iva.va_seq && ava.va_seq && 6585 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6586 cinfo->atomic = TRUE; 6587 else 6588 cinfo->atomic = FALSE; 6589 } 6590 6591 /* Check for mandatory locking and that the size gets set. */ 6592 cva.va_mask = AT_MODE; 6593 if (setsize) 6594 cva.va_mask |= AT_SIZE; 6595 6596 /* Assume the worst */ 6597 cs->mandlock = TRUE; 6598 6599 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6600 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6601 6602 /* 6603 * Truncate the file if necessary; this would be 6604 * the case for create over an existing file. 6605 */ 6606 6607 if (trunc) { 6608 int in_crit = 0; 6609 rfs4_file_t *fp; 6610 bool_t create = FALSE; 6611 6612 /* 6613 * We are writing over an existing file. 6614 * Check to see if we need to recall a delegation. 6615 */ 6616 rfs4_hold_deleg_policy(); 6617 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6618 if (rfs4_check_delegated_byfp(FWRITE, fp, 6619 (reqsize == 0), FALSE, FALSE, &clientid)) { 6620 rfs4_file_rele(fp); 6621 rfs4_rele_deleg_policy(); 6622 VN_RELE(vp); 6623 *attrset = 0; 6624 return (NFS4ERR_DELAY); 6625 } 6626 rfs4_file_rele(fp); 6627 } 6628 rfs4_rele_deleg_policy(); 6629 6630 if (nbl_need_check(vp)) { 6631 in_crit = 1; 6632 6633 ASSERT(reqsize == 0); 6634 6635 nbl_start_crit(vp, RW_READER); 6636 if (nbl_conflict(vp, NBL_WRITE, 0, 6637 cva.va_size, 0, NULL)) { 6638 in_crit = 0; 6639 nbl_end_crit(vp); 6640 VN_RELE(vp); 6641 *attrset = 0; 6642 return (NFS4ERR_ACCESS); 6643 } 6644 } 6645 ct.cc_sysid = 0; 6646 ct.cc_pid = 0; 6647 ct.cc_caller_id = nfs4_srv_caller_id; 6648 ct.cc_flags = CC_DONTBLOCK; 6649 6650 cva.va_mask = AT_SIZE; 6651 cva.va_size = reqsize; 6652 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6653 if (in_crit) 6654 nbl_end_crit(vp); 6655 } 6656 } 6657 6658 error = makefh4(&cs->fh, vp, cs->exi); 6659 6660 /* 6661 * Force modified data and metadata out to stable storage. 6662 */ 6663 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6664 6665 if (error) { 6666 VN_RELE(vp); 6667 *attrset = 0; 6668 return (puterrno4(error)); 6669 } 6670 6671 /* if parent dir is attrdir, set namedattr fh flag */ 6672 if (dvp->v_flag & V_XATTRDIR) 6673 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6674 6675 if (cs->vp) 6676 VN_RELE(cs->vp); 6677 6678 cs->vp = vp; 6679 6680 /* 6681 * if we did not create the file, we will need to check 6682 * the access bits on the file 6683 */ 6684 6685 if (!created) { 6686 if (setsize) 6687 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6688 status = check_open_access(args->share_access, cs, req); 6689 if (status != NFS4_OK) 6690 *attrset = 0; 6691 } 6692 return (status); 6693 } 6694 6695 /*ARGSUSED*/ 6696 static void 6697 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6698 rfs4_openowner_t *oo, delegreq_t deleg, 6699 uint32_t access, uint32_t deny, 6700 OPEN4res *resp, int deleg_cur) 6701 { 6702 /* XXX Currently not using req */ 6703 rfs4_state_t *sp; 6704 rfs4_file_t *fp; 6705 bool_t screate = TRUE; 6706 bool_t fcreate = TRUE; 6707 uint32_t open_a, share_a; 6708 uint32_t open_d, share_d; 6709 rfs4_deleg_state_t *dsp; 6710 sysid_t sysid; 6711 nfsstat4 status; 6712 caller_context_t ct; 6713 int fflags = 0; 6714 int recall = 0; 6715 int err; 6716 int first_open; 6717 6718 /* get the file struct and hold a lock on it during initial open */ 6719 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6720 if (fp == NULL) { 6721 resp->status = NFS4ERR_RESOURCE; 6722 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6723 return; 6724 } 6725 6726 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6727 if (sp == NULL) { 6728 resp->status = NFS4ERR_RESOURCE; 6729 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6730 /* No need to keep any reference */ 6731 rw_exit(&fp->rf_file_rwlock); 6732 rfs4_file_rele(fp); 6733 return; 6734 } 6735 6736 /* try to get the sysid before continuing */ 6737 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6738 resp->status = status; 6739 rfs4_file_rele(fp); 6740 /* Not a fully formed open; "close" it */ 6741 if (screate == TRUE) 6742 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6743 rfs4_state_rele(sp); 6744 return; 6745 } 6746 6747 /* Calculate the fflags for this OPEN. */ 6748 if (access & OPEN4_SHARE_ACCESS_READ) 6749 fflags |= FREAD; 6750 if (access & OPEN4_SHARE_ACCESS_WRITE) 6751 fflags |= FWRITE; 6752 6753 rfs4_dbe_lock(sp->rs_dbe); 6754 6755 /* 6756 * Calculate the new deny and access mode that this open is adding to 6757 * the file for this open owner; 6758 */ 6759 open_d = (deny & ~sp->rs_open_deny); 6760 open_a = (access & ~sp->rs_open_access); 6761 6762 /* 6763 * Calculate the new share access and share deny modes that this open 6764 * is adding to the file for this open owner; 6765 */ 6766 share_a = (access & ~sp->rs_share_access); 6767 share_d = (deny & ~sp->rs_share_deny); 6768 6769 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6770 6771 /* 6772 * Check to see the client has already sent an open for this 6773 * open owner on this file with the same share/deny modes. 6774 * If so, we don't need to check for a conflict and we don't 6775 * need to add another shrlock. If not, then we need to 6776 * check for conflicts in deny and access before checking for 6777 * conflicts in delegation. We don't want to recall a 6778 * delegation based on an open that will eventually fail based 6779 * on shares modes. 6780 */ 6781 6782 if (share_a || share_d) { 6783 if ((err = rfs4_share(sp, access, deny)) != 0) { 6784 rfs4_dbe_unlock(sp->rs_dbe); 6785 resp->status = err; 6786 6787 rfs4_file_rele(fp); 6788 /* Not a fully formed open; "close" it */ 6789 if (screate == TRUE) 6790 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6791 rfs4_state_rele(sp); 6792 return; 6793 } 6794 } 6795 6796 rfs4_dbe_lock(fp->rf_dbe); 6797 6798 /* 6799 * Check to see if this file is delegated and if so, if a 6800 * recall needs to be done. 6801 */ 6802 if (rfs4_check_recall(sp, access)) { 6803 rfs4_dbe_unlock(fp->rf_dbe); 6804 rfs4_dbe_unlock(sp->rs_dbe); 6805 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6806 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6807 rfs4_dbe_lock(sp->rs_dbe); 6808 6809 /* if state closed while lock was dropped */ 6810 if (sp->rs_closed) { 6811 if (share_a || share_d) 6812 (void) rfs4_unshare(sp); 6813 rfs4_dbe_unlock(sp->rs_dbe); 6814 rfs4_file_rele(fp); 6815 /* Not a fully formed open; "close" it */ 6816 if (screate == TRUE) 6817 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6818 rfs4_state_rele(sp); 6819 resp->status = NFS4ERR_OLD_STATEID; 6820 return; 6821 } 6822 6823 rfs4_dbe_lock(fp->rf_dbe); 6824 /* Let's see if the delegation was returned */ 6825 if (rfs4_check_recall(sp, access)) { 6826 rfs4_dbe_unlock(fp->rf_dbe); 6827 if (share_a || share_d) 6828 (void) rfs4_unshare(sp); 6829 rfs4_dbe_unlock(sp->rs_dbe); 6830 rfs4_file_rele(fp); 6831 rfs4_update_lease(sp->rs_owner->ro_client); 6832 6833 /* Not a fully formed open; "close" it */ 6834 if (screate == TRUE) 6835 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6836 rfs4_state_rele(sp); 6837 resp->status = NFS4ERR_DELAY; 6838 return; 6839 } 6840 } 6841 /* 6842 * the share check passed and any delegation conflict has been 6843 * taken care of, now call vop_open. 6844 * if this is the first open then call vop_open with fflags. 6845 * if not, call vn_open_upgrade with just the upgrade flags. 6846 * 6847 * if the file has been opened already, it will have the current 6848 * access mode in the state struct. if it has no share access, then 6849 * this is a new open. 6850 * 6851 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6852 * call VOP_OPEN(), just do the open upgrade. 6853 */ 6854 if (first_open && !deleg_cur) { 6855 ct.cc_sysid = sysid; 6856 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 6857 ct.cc_caller_id = nfs4_srv_caller_id; 6858 ct.cc_flags = CC_DONTBLOCK; 6859 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6860 if (err) { 6861 rfs4_dbe_unlock(fp->rf_dbe); 6862 if (share_a || share_d) 6863 (void) rfs4_unshare(sp); 6864 rfs4_dbe_unlock(sp->rs_dbe); 6865 rfs4_file_rele(fp); 6866 6867 /* Not a fully formed open; "close" it */ 6868 if (screate == TRUE) 6869 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6870 rfs4_state_rele(sp); 6871 /* check if a monitor detected a delegation conflict */ 6872 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6873 resp->status = NFS4ERR_DELAY; 6874 else 6875 resp->status = NFS4ERR_SERVERFAULT; 6876 return; 6877 } 6878 } else { /* open upgrade */ 6879 /* 6880 * calculate the fflags for the new mode that is being added 6881 * by this upgrade. 6882 */ 6883 fflags = 0; 6884 if (open_a & OPEN4_SHARE_ACCESS_READ) 6885 fflags |= FREAD; 6886 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6887 fflags |= FWRITE; 6888 vn_open_upgrade(cs->vp, fflags); 6889 } 6890 sp->rs_open_access |= access; 6891 sp->rs_open_deny |= deny; 6892 6893 if (open_d & OPEN4_SHARE_DENY_READ) 6894 fp->rf_deny_read++; 6895 if (open_d & OPEN4_SHARE_DENY_WRITE) 6896 fp->rf_deny_write++; 6897 fp->rf_share_deny |= deny; 6898 6899 if (open_a & OPEN4_SHARE_ACCESS_READ) 6900 fp->rf_access_read++; 6901 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6902 fp->rf_access_write++; 6903 fp->rf_share_access |= access; 6904 6905 /* 6906 * Check for delegation here. if the deleg argument is not 6907 * DELEG_ANY, then this is a reclaim from a client and 6908 * we must honor the delegation requested. If necessary we can 6909 * set the recall flag. 6910 */ 6911 6912 dsp = rfs4_grant_delegation(deleg, sp, &recall); 6913 6914 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 6915 6916 next_stateid(&sp->rs_stateid); 6917 6918 resp->stateid = sp->rs_stateid.stateid; 6919 6920 rfs4_dbe_unlock(fp->rf_dbe); 6921 rfs4_dbe_unlock(sp->rs_dbe); 6922 6923 if (dsp) { 6924 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6925 rfs4_deleg_state_rele(dsp); 6926 } 6927 6928 rfs4_file_rele(fp); 6929 rfs4_state_rele(sp); 6930 6931 resp->status = NFS4_OK; 6932 } 6933 6934 /*ARGSUSED*/ 6935 static void 6936 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6937 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6938 { 6939 change_info4 *cinfo = &resp->cinfo; 6940 bitmap4 *attrset = &resp->attrset; 6941 6942 if (args->opentype == OPEN4_NOCREATE) 6943 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6944 req, cs, args->share_access, cinfo); 6945 else { 6946 /* inhibit delegation grants during exclusive create */ 6947 6948 if (args->mode == EXCLUSIVE4) 6949 rfs4_disable_delegation(); 6950 6951 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6952 oo->ro_client->rc_clientid); 6953 } 6954 6955 if (resp->status == NFS4_OK) { 6956 6957 /* cs->vp cs->fh now reference the desired file */ 6958 6959 rfs4_do_open(cs, req, oo, 6960 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 6961 args->share_access, args->share_deny, resp, 0); 6962 6963 /* 6964 * If rfs4_createfile set attrset, we must 6965 * clear this attrset before the response is copied. 6966 */ 6967 if (resp->status != NFS4_OK && resp->attrset) { 6968 resp->attrset = 0; 6969 } 6970 } 6971 else 6972 *cs->statusp = resp->status; 6973 6974 if (args->mode == EXCLUSIVE4) 6975 rfs4_enable_delegation(); 6976 } 6977 6978 /*ARGSUSED*/ 6979 static void 6980 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 6981 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6982 { 6983 change_info4 *cinfo = &resp->cinfo; 6984 vattr_t va; 6985 vtype_t v_type = cs->vp->v_type; 6986 int error = 0; 6987 6988 /* Verify that we have a regular file */ 6989 if (v_type != VREG) { 6990 if (v_type == VDIR) 6991 resp->status = NFS4ERR_ISDIR; 6992 else if (v_type == VLNK) 6993 resp->status = NFS4ERR_SYMLINK; 6994 else 6995 resp->status = NFS4ERR_INVAL; 6996 return; 6997 } 6998 6999 va.va_mask = AT_MODE|AT_UID; 7000 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7001 if (error) { 7002 resp->status = puterrno4(error); 7003 return; 7004 } 7005 7006 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7007 7008 /* 7009 * Check if we have access to the file, Note the the file 7010 * could have originally been open UNCHECKED or GUARDED 7011 * with mode bits that will now fail, but there is nothing 7012 * we can really do about that except in the case that the 7013 * owner of the file is the one requesting the open. 7014 */ 7015 if (crgetuid(cs->cr) != va.va_uid) { 7016 resp->status = check_open_access(args->share_access, cs, req); 7017 if (resp->status != NFS4_OK) { 7018 return; 7019 } 7020 } 7021 7022 /* 7023 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7024 */ 7025 cinfo->before = 0; 7026 cinfo->after = 0; 7027 cinfo->atomic = FALSE; 7028 7029 rfs4_do_open(cs, req, oo, 7030 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 7031 args->share_access, args->share_deny, resp, 0); 7032 } 7033 7034 static void 7035 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7036 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7037 { 7038 int error; 7039 nfsstat4 status; 7040 stateid4 stateid = 7041 args->open_claim4_u.delegate_cur_info.delegate_stateid; 7042 rfs4_deleg_state_t *dsp; 7043 7044 /* 7045 * Find the state info from the stateid and confirm that the 7046 * file is delegated. If the state openowner is the same as 7047 * the supplied openowner we're done. If not, get the file 7048 * info from the found state info. Use that file info to 7049 * create the state for this lock owner. Note solaris doen't 7050 * really need the pathname to find the file. We may want to 7051 * lookup the pathname and make sure that the vp exist and 7052 * matches the vp in the file structure. However it is 7053 * possible that the pathname nolonger exists (local process 7054 * unlinks the file), so this may not be that useful. 7055 */ 7056 7057 status = rfs4_get_deleg_state(&stateid, &dsp); 7058 if (status != NFS4_OK) { 7059 resp->status = status; 7060 return; 7061 } 7062 7063 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7064 7065 /* 7066 * New lock owner, create state. Since this was probably called 7067 * in response to a CB_RECALL we set deleg to DELEG_NONE 7068 */ 7069 7070 ASSERT(cs->vp != NULL); 7071 VN_RELE(cs->vp); 7072 VN_HOLD(dsp->rds_finfo->rf_vp); 7073 cs->vp = dsp->rds_finfo->rf_vp; 7074 7075 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7076 rfs4_deleg_state_rele(dsp); 7077 *cs->statusp = resp->status = puterrno4(error); 7078 return; 7079 } 7080 7081 /* Mark progress for delegation returns */ 7082 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7083 rfs4_deleg_state_rele(dsp); 7084 rfs4_do_open(cs, req, oo, DELEG_NONE, 7085 args->share_access, args->share_deny, resp, 1); 7086 } 7087 7088 /*ARGSUSED*/ 7089 static void 7090 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7091 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7092 { 7093 /* 7094 * Lookup the pathname, it must already exist since this file 7095 * was delegated. 7096 * 7097 * Find the file and state info for this vp and open owner pair. 7098 * check that they are in fact delegated. 7099 * check that the state access and deny modes are the same. 7100 * 7101 * Return the delgation possibly seting the recall flag. 7102 */ 7103 rfs4_file_t *fp; 7104 rfs4_state_t *sp; 7105 bool_t create = FALSE; 7106 bool_t dcreate = FALSE; 7107 rfs4_deleg_state_t *dsp; 7108 nfsace4 *ace; 7109 7110 /* Note we ignore oflags */ 7111 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7112 req, cs, args->share_access, &resp->cinfo); 7113 7114 if (resp->status != NFS4_OK) { 7115 return; 7116 } 7117 7118 /* get the file struct and hold a lock on it during initial open */ 7119 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7120 if (fp == NULL) { 7121 resp->status = NFS4ERR_RESOURCE; 7122 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7123 return; 7124 } 7125 7126 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7127 if (sp == NULL) { 7128 resp->status = NFS4ERR_SERVERFAULT; 7129 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7130 rw_exit(&fp->rf_file_rwlock); 7131 rfs4_file_rele(fp); 7132 return; 7133 } 7134 7135 rfs4_dbe_lock(sp->rs_dbe); 7136 rfs4_dbe_lock(fp->rf_dbe); 7137 if (args->share_access != sp->rs_share_access || 7138 args->share_deny != sp->rs_share_deny || 7139 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7140 NFS4_DEBUG(rfs4_debug, 7141 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7142 rfs4_dbe_unlock(fp->rf_dbe); 7143 rfs4_dbe_unlock(sp->rs_dbe); 7144 rfs4_file_rele(fp); 7145 rfs4_state_rele(sp); 7146 resp->status = NFS4ERR_SERVERFAULT; 7147 return; 7148 } 7149 rfs4_dbe_unlock(fp->rf_dbe); 7150 rfs4_dbe_unlock(sp->rs_dbe); 7151 7152 dsp = rfs4_finddeleg(sp, &dcreate); 7153 if (dsp == NULL) { 7154 rfs4_state_rele(sp); 7155 rfs4_file_rele(fp); 7156 resp->status = NFS4ERR_SERVERFAULT; 7157 return; 7158 } 7159 7160 next_stateid(&sp->rs_stateid); 7161 7162 resp->stateid = sp->rs_stateid.stateid; 7163 7164 resp->delegation.delegation_type = dsp->rds_dtype; 7165 7166 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7167 open_read_delegation4 *rv = 7168 &resp->delegation.open_delegation4_u.read; 7169 7170 rv->stateid = dsp->rds_delegid.stateid; 7171 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7172 ace = &rv->permissions; 7173 } else { 7174 open_write_delegation4 *rv = 7175 &resp->delegation.open_delegation4_u.write; 7176 7177 rv->stateid = dsp->rds_delegid.stateid; 7178 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7179 ace = &rv->permissions; 7180 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7181 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7182 } 7183 7184 /* XXX For now */ 7185 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7186 ace->flag = 0; 7187 ace->access_mask = 0; 7188 ace->who.utf8string_len = 0; 7189 ace->who.utf8string_val = 0; 7190 7191 rfs4_deleg_state_rele(dsp); 7192 rfs4_state_rele(sp); 7193 rfs4_file_rele(fp); 7194 } 7195 7196 typedef enum { 7197 NFS4_CHKSEQ_OKAY = 0, 7198 NFS4_CHKSEQ_REPLAY = 1, 7199 NFS4_CHKSEQ_BAD = 2 7200 } rfs4_chkseq_t; 7201 7202 /* 7203 * Generic function for sequence number checks. 7204 */ 7205 static rfs4_chkseq_t 7206 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7207 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7208 { 7209 /* Same sequence ids and matching operations? */ 7210 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7211 if (copyres == TRUE) { 7212 rfs4_free_reply(resop); 7213 rfs4_copy_reply(resop, lastop); 7214 } 7215 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7216 "Replayed SEQID %d\n", seqid)); 7217 return (NFS4_CHKSEQ_REPLAY); 7218 } 7219 7220 /* If the incoming sequence is not the next expected then it is bad */ 7221 if (rqst_seq != seqid + 1) { 7222 if (rqst_seq == seqid) { 7223 NFS4_DEBUG(rfs4_debug, 7224 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7225 "but last op was %d current op is %d\n", 7226 lastop->resop, resop->resop)); 7227 return (NFS4_CHKSEQ_BAD); 7228 } 7229 NFS4_DEBUG(rfs4_debug, 7230 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7231 rqst_seq, seqid)); 7232 return (NFS4_CHKSEQ_BAD); 7233 } 7234 7235 /* Everything okay -- next expected */ 7236 return (NFS4_CHKSEQ_OKAY); 7237 } 7238 7239 7240 static rfs4_chkseq_t 7241 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7242 { 7243 rfs4_chkseq_t rc; 7244 7245 rfs4_dbe_lock(op->ro_dbe); 7246 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7247 TRUE); 7248 rfs4_dbe_unlock(op->ro_dbe); 7249 7250 if (rc == NFS4_CHKSEQ_OKAY) 7251 rfs4_update_lease(op->ro_client); 7252 7253 return (rc); 7254 } 7255 7256 static rfs4_chkseq_t 7257 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7258 { 7259 rfs4_chkseq_t rc; 7260 7261 rfs4_dbe_lock(op->ro_dbe); 7262 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7263 olo_seqid, resop, FALSE); 7264 rfs4_dbe_unlock(op->ro_dbe); 7265 7266 return (rc); 7267 } 7268 7269 static rfs4_chkseq_t 7270 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7271 { 7272 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7273 7274 rfs4_dbe_lock(lsp->rls_dbe); 7275 if (!lsp->rls_skip_seqid_check) 7276 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7277 resop, TRUE); 7278 rfs4_dbe_unlock(lsp->rls_dbe); 7279 7280 return (rc); 7281 } 7282 7283 static void 7284 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7285 struct svc_req *req, struct compound_state *cs) 7286 { 7287 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7288 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7289 open_owner4 *owner = &args->owner; 7290 open_claim_type4 claim = args->claim; 7291 rfs4_client_t *cp; 7292 rfs4_openowner_t *oo; 7293 bool_t create; 7294 bool_t replay = FALSE; 7295 int can_reclaim; 7296 7297 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7298 OPEN4args *, args); 7299 7300 if (cs->vp == NULL) { 7301 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7302 goto end; 7303 } 7304 7305 /* 7306 * Need to check clientid and lease expiration first based on 7307 * error ordering and incrementing sequence id. 7308 */ 7309 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7310 if (cp == NULL) { 7311 *cs->statusp = resp->status = 7312 rfs4_check_clientid(&owner->clientid, 0); 7313 goto end; 7314 } 7315 7316 if (rfs4_lease_expired(cp)) { 7317 rfs4_client_close(cp); 7318 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7319 goto end; 7320 } 7321 can_reclaim = cp->rc_can_reclaim; 7322 7323 /* 7324 * Find the open_owner for use from this point forward. Take 7325 * care in updating the sequence id based on the type of error 7326 * being returned. 7327 */ 7328 retry: 7329 create = TRUE; 7330 oo = rfs4_findopenowner(owner, &create, args->seqid); 7331 if (oo == NULL) { 7332 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 7333 rfs4_client_rele(cp); 7334 goto end; 7335 } 7336 7337 /* Hold off access to the sequence space while the open is done */ 7338 rfs4_sw_enter(&oo->ro_sw); 7339 7340 /* 7341 * If the open_owner existed before at the server, then check 7342 * the sequence id. 7343 */ 7344 if (!create && !oo->ro_postpone_confirm) { 7345 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7346 case NFS4_CHKSEQ_BAD: 7347 if ((args->seqid > oo->ro_open_seqid) && 7348 oo->ro_need_confirm) { 7349 rfs4_free_opens(oo, TRUE, FALSE); 7350 rfs4_sw_exit(&oo->ro_sw); 7351 rfs4_openowner_rele(oo); 7352 goto retry; 7353 } 7354 resp->status = NFS4ERR_BAD_SEQID; 7355 goto out; 7356 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7357 replay = TRUE; 7358 goto out; 7359 default: 7360 break; 7361 } 7362 7363 /* 7364 * Sequence was ok and open owner exists 7365 * check to see if we have yet to see an 7366 * open_confirm. 7367 */ 7368 if (oo->ro_need_confirm) { 7369 rfs4_free_opens(oo, TRUE, FALSE); 7370 rfs4_sw_exit(&oo->ro_sw); 7371 rfs4_openowner_rele(oo); 7372 goto retry; 7373 } 7374 } 7375 /* Grace only applies to regular-type OPENs */ 7376 if (rfs4_clnt_in_grace(cp) && 7377 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7378 *cs->statusp = resp->status = NFS4ERR_GRACE; 7379 goto out; 7380 } 7381 7382 /* 7383 * If previous state at the server existed then can_reclaim 7384 * will be set. If not reply NFS4ERR_NO_GRACE to the 7385 * client. 7386 */ 7387 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7388 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7389 goto out; 7390 } 7391 7392 7393 /* 7394 * Reject the open if the client has missed the grace period 7395 */ 7396 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7397 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7398 goto out; 7399 } 7400 7401 /* Couple of up-front bookkeeping items */ 7402 if (oo->ro_need_confirm) { 7403 /* 7404 * If this is a reclaim OPEN then we should not ask 7405 * for a confirmation of the open_owner per the 7406 * protocol specification. 7407 */ 7408 if (claim == CLAIM_PREVIOUS) 7409 oo->ro_need_confirm = FALSE; 7410 else 7411 resp->rflags |= OPEN4_RESULT_CONFIRM; 7412 } 7413 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7414 7415 /* 7416 * If there is an unshared filesystem mounted on this vnode, 7417 * do not allow to open/create in this directory. 7418 */ 7419 if (vn_ismntpt(cs->vp)) { 7420 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7421 goto out; 7422 } 7423 7424 /* 7425 * access must READ, WRITE, or BOTH. No access is invalid. 7426 * deny can be READ, WRITE, BOTH, or NONE. 7427 * bits not defined for access/deny are invalid. 7428 */ 7429 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7430 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7431 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7432 *cs->statusp = resp->status = NFS4ERR_INVAL; 7433 goto out; 7434 } 7435 7436 7437 /* 7438 * make sure attrset is zero before response is built. 7439 */ 7440 resp->attrset = 0; 7441 7442 switch (claim) { 7443 case CLAIM_NULL: 7444 rfs4_do_opennull(cs, req, args, oo, resp); 7445 break; 7446 case CLAIM_PREVIOUS: 7447 rfs4_do_openprev(cs, req, args, oo, resp); 7448 break; 7449 case CLAIM_DELEGATE_CUR: 7450 rfs4_do_opendelcur(cs, req, args, oo, resp); 7451 break; 7452 case CLAIM_DELEGATE_PREV: 7453 rfs4_do_opendelprev(cs, req, args, oo, resp); 7454 break; 7455 default: 7456 resp->status = NFS4ERR_INVAL; 7457 break; 7458 } 7459 7460 out: 7461 rfs4_client_rele(cp); 7462 7463 /* Catch sequence id handling here to make it a little easier */ 7464 switch (resp->status) { 7465 case NFS4ERR_BADXDR: 7466 case NFS4ERR_BAD_SEQID: 7467 case NFS4ERR_BAD_STATEID: 7468 case NFS4ERR_NOFILEHANDLE: 7469 case NFS4ERR_RESOURCE: 7470 case NFS4ERR_STALE_CLIENTID: 7471 case NFS4ERR_STALE_STATEID: 7472 /* 7473 * The protocol states that if any of these errors are 7474 * being returned, the sequence id should not be 7475 * incremented. Any other return requires an 7476 * increment. 7477 */ 7478 break; 7479 default: 7480 /* Always update the lease in this case */ 7481 rfs4_update_lease(oo->ro_client); 7482 7483 /* Regular response - copy the result */ 7484 if (!replay) 7485 rfs4_update_open_resp(oo, resop, &cs->fh); 7486 7487 /* 7488 * REPLAY case: Only if the previous response was OK 7489 * do we copy the filehandle. If not OK, no 7490 * filehandle to copy. 7491 */ 7492 if (replay == TRUE && 7493 resp->status == NFS4_OK && 7494 oo->ro_reply_fh.nfs_fh4_val) { 7495 /* 7496 * If this is a replay, we must restore the 7497 * current filehandle/vp to that of what was 7498 * returned originally. Try our best to do 7499 * it. 7500 */ 7501 nfs_fh4_fmt_t *fh_fmtp = 7502 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7503 7504 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7505 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7506 7507 if (cs->exi == NULL) { 7508 resp->status = NFS4ERR_STALE; 7509 goto finish; 7510 } 7511 7512 VN_RELE(cs->vp); 7513 7514 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7515 &resp->status); 7516 7517 if (cs->vp == NULL) 7518 goto finish; 7519 7520 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7521 } 7522 7523 /* 7524 * If this was a replay, no need to update the 7525 * sequence id. If the open_owner was not created on 7526 * this pass, then update. The first use of an 7527 * open_owner will not bump the sequence id. 7528 */ 7529 if (replay == FALSE && !create) 7530 rfs4_update_open_sequence(oo); 7531 /* 7532 * If the client is receiving an error and the 7533 * open_owner needs to be confirmed, there is no way 7534 * to notify the client of this fact ignoring the fact 7535 * that the server has no method of returning a 7536 * stateid to confirm. Therefore, the server needs to 7537 * mark this open_owner in a way as to avoid the 7538 * sequence id checking the next time the client uses 7539 * this open_owner. 7540 */ 7541 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7542 oo->ro_postpone_confirm = TRUE; 7543 /* 7544 * If OK response then clear the postpone flag and 7545 * reset the sequence id to keep in sync with the 7546 * client. 7547 */ 7548 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7549 oo->ro_postpone_confirm = FALSE; 7550 oo->ro_open_seqid = args->seqid; 7551 } 7552 break; 7553 } 7554 7555 finish: 7556 *cs->statusp = resp->status; 7557 7558 rfs4_sw_exit(&oo->ro_sw); 7559 rfs4_openowner_rele(oo); 7560 7561 end: 7562 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7563 OPEN4res *, resp); 7564 } 7565 7566 /*ARGSUSED*/ 7567 void 7568 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7569 struct svc_req *req, struct compound_state *cs) 7570 { 7571 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7572 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7573 rfs4_state_t *sp; 7574 nfsstat4 status; 7575 7576 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7577 OPEN_CONFIRM4args *, args); 7578 7579 if (cs->vp == NULL) { 7580 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7581 goto out; 7582 } 7583 7584 if (cs->vp->v_type != VREG) { 7585 *cs->statusp = resp->status = 7586 cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL; 7587 return; 7588 } 7589 7590 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7591 if (status != NFS4_OK) { 7592 *cs->statusp = resp->status = status; 7593 goto out; 7594 } 7595 7596 /* Ensure specified filehandle matches */ 7597 if (cs->vp != sp->rs_finfo->rf_vp) { 7598 rfs4_state_rele(sp); 7599 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7600 goto out; 7601 } 7602 7603 /* hold off other access to open_owner while we tinker */ 7604 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7605 7606 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7607 case NFS4_CHECK_STATEID_OKAY: 7608 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7609 resop) != 0) { 7610 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7611 break; 7612 } 7613 /* 7614 * If it is the appropriate stateid and determined to 7615 * be "OKAY" then this means that the stateid does not 7616 * need to be confirmed and the client is in error for 7617 * sending an OPEN_CONFIRM. 7618 */ 7619 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7620 break; 7621 case NFS4_CHECK_STATEID_OLD: 7622 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7623 break; 7624 case NFS4_CHECK_STATEID_BAD: 7625 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7626 break; 7627 case NFS4_CHECK_STATEID_EXPIRED: 7628 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7629 break; 7630 case NFS4_CHECK_STATEID_CLOSED: 7631 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7632 break; 7633 case NFS4_CHECK_STATEID_REPLAY: 7634 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7635 resop)) { 7636 case NFS4_CHKSEQ_OKAY: 7637 /* 7638 * This is replayed stateid; if seqid matches 7639 * next expected, then client is using wrong seqid. 7640 */ 7641 /* fall through */ 7642 case NFS4_CHKSEQ_BAD: 7643 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7644 break; 7645 case NFS4_CHKSEQ_REPLAY: 7646 /* 7647 * Note this case is the duplicate case so 7648 * resp->status is already set. 7649 */ 7650 *cs->statusp = resp->status; 7651 rfs4_update_lease(sp->rs_owner->ro_client); 7652 break; 7653 } 7654 break; 7655 case NFS4_CHECK_STATEID_UNCONFIRMED: 7656 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7657 resop) != NFS4_CHKSEQ_OKAY) { 7658 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7659 break; 7660 } 7661 *cs->statusp = resp->status = NFS4_OK; 7662 7663 next_stateid(&sp->rs_stateid); 7664 resp->open_stateid = sp->rs_stateid.stateid; 7665 sp->rs_owner->ro_need_confirm = FALSE; 7666 rfs4_update_lease(sp->rs_owner->ro_client); 7667 rfs4_update_open_sequence(sp->rs_owner); 7668 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7669 break; 7670 default: 7671 ASSERT(FALSE); 7672 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7673 break; 7674 } 7675 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7676 rfs4_state_rele(sp); 7677 7678 out: 7679 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7680 OPEN_CONFIRM4res *, resp); 7681 } 7682 7683 /*ARGSUSED*/ 7684 void 7685 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7686 struct svc_req *req, struct compound_state *cs) 7687 { 7688 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7689 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7690 uint32_t access = args->share_access; 7691 uint32_t deny = args->share_deny; 7692 nfsstat4 status; 7693 rfs4_state_t *sp; 7694 rfs4_file_t *fp; 7695 int fflags = 0; 7696 7697 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7698 OPEN_DOWNGRADE4args *, args); 7699 7700 if (cs->vp == NULL) { 7701 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7702 goto out; 7703 } 7704 7705 if (cs->vp->v_type != VREG) { 7706 *cs->statusp = resp->status = NFS4ERR_INVAL; 7707 return; 7708 } 7709 7710 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7711 if (status != NFS4_OK) { 7712 *cs->statusp = resp->status = status; 7713 goto out; 7714 } 7715 7716 /* Ensure specified filehandle matches */ 7717 if (cs->vp != sp->rs_finfo->rf_vp) { 7718 rfs4_state_rele(sp); 7719 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7720 goto out; 7721 } 7722 7723 /* hold off other access to open_owner while we tinker */ 7724 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7725 7726 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7727 case NFS4_CHECK_STATEID_OKAY: 7728 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7729 resop) != NFS4_CHKSEQ_OKAY) { 7730 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7731 goto end; 7732 } 7733 break; 7734 case NFS4_CHECK_STATEID_OLD: 7735 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7736 goto end; 7737 case NFS4_CHECK_STATEID_BAD: 7738 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7739 goto end; 7740 case NFS4_CHECK_STATEID_EXPIRED: 7741 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7742 goto end; 7743 case NFS4_CHECK_STATEID_CLOSED: 7744 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7745 goto end; 7746 case NFS4_CHECK_STATEID_UNCONFIRMED: 7747 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7748 goto end; 7749 case NFS4_CHECK_STATEID_REPLAY: 7750 /* Check the sequence id for the open owner */ 7751 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7752 resop)) { 7753 case NFS4_CHKSEQ_OKAY: 7754 /* 7755 * This is replayed stateid; if seqid matches 7756 * next expected, then client is using wrong seqid. 7757 */ 7758 /* fall through */ 7759 case NFS4_CHKSEQ_BAD: 7760 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7761 goto end; 7762 case NFS4_CHKSEQ_REPLAY: 7763 /* 7764 * Note this case is the duplicate case so 7765 * resp->status is already set. 7766 */ 7767 *cs->statusp = resp->status; 7768 rfs4_update_lease(sp->rs_owner->ro_client); 7769 goto end; 7770 } 7771 break; 7772 default: 7773 ASSERT(FALSE); 7774 break; 7775 } 7776 7777 rfs4_dbe_lock(sp->rs_dbe); 7778 /* 7779 * Check that the new access modes and deny modes are valid. 7780 * Check that no invalid bits are set. 7781 */ 7782 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7783 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7784 *cs->statusp = resp->status = NFS4ERR_INVAL; 7785 rfs4_update_open_sequence(sp->rs_owner); 7786 rfs4_dbe_unlock(sp->rs_dbe); 7787 goto end; 7788 } 7789 7790 /* 7791 * The new modes must be a subset of the current modes and 7792 * the access must specify at least one mode. To test that 7793 * the new mode is a subset of the current modes we bitwise 7794 * AND them together and check that the result equals the new 7795 * mode. For example: 7796 * New mode, access == R and current mode, sp->rs_open_access == RW 7797 * access & sp->rs_open_access == R == access, so the new access mode 7798 * is valid. Consider access == RW, sp->rs_open_access = R 7799 * access & sp->rs_open_access == R != access, so the new access mode 7800 * is invalid. 7801 */ 7802 if ((access & sp->rs_open_access) != access || 7803 (deny & sp->rs_open_deny) != deny || 7804 (access & 7805 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7806 *cs->statusp = resp->status = NFS4ERR_INVAL; 7807 rfs4_update_open_sequence(sp->rs_owner); 7808 rfs4_dbe_unlock(sp->rs_dbe); 7809 goto end; 7810 } 7811 7812 /* 7813 * Release any share locks associated with this stateID. 7814 * Strictly speaking, this violates the spec because the 7815 * spec effectively requires that open downgrade be atomic. 7816 * At present, fs_shrlock does not have this capability. 7817 */ 7818 (void) rfs4_unshare(sp); 7819 7820 status = rfs4_share(sp, access, deny); 7821 if (status != NFS4_OK) { 7822 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7823 rfs4_update_open_sequence(sp->rs_owner); 7824 rfs4_dbe_unlock(sp->rs_dbe); 7825 goto end; 7826 } 7827 7828 fp = sp->rs_finfo; 7829 rfs4_dbe_lock(fp->rf_dbe); 7830 7831 /* 7832 * If the current mode has deny read and the new mode 7833 * does not, decrement the number of deny read mode bits 7834 * and if it goes to zero turn off the deny read bit 7835 * on the file. 7836 */ 7837 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7838 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7839 fp->rf_deny_read--; 7840 if (fp->rf_deny_read == 0) 7841 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 7842 } 7843 7844 /* 7845 * If the current mode has deny write and the new mode 7846 * does not, decrement the number of deny write mode bits 7847 * and if it goes to zero turn off the deny write bit 7848 * on the file. 7849 */ 7850 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 7851 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7852 fp->rf_deny_write--; 7853 if (fp->rf_deny_write == 0) 7854 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7855 } 7856 7857 /* 7858 * If the current mode has access read and the new mode 7859 * does not, decrement the number of access read mode bits 7860 * and if it goes to zero turn off the access read bit 7861 * on the file. set fflags to FREAD for the call to 7862 * vn_open_downgrade(). 7863 */ 7864 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 7865 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7866 fp->rf_access_read--; 7867 if (fp->rf_access_read == 0) 7868 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 7869 fflags |= FREAD; 7870 } 7871 7872 /* 7873 * If the current mode has access write and the new mode 7874 * does not, decrement the number of access write mode bits 7875 * and if it goes to zero turn off the access write bit 7876 * on the file. set fflags to FWRITE for the call to 7877 * vn_open_downgrade(). 7878 */ 7879 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 7880 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7881 fp->rf_access_write--; 7882 if (fp->rf_access_write == 0) 7883 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7884 fflags |= FWRITE; 7885 } 7886 7887 /* Check that the file is still accessible */ 7888 ASSERT(fp->rf_share_access); 7889 7890 rfs4_dbe_unlock(fp->rf_dbe); 7891 7892 /* now set the new open access and deny modes */ 7893 sp->rs_open_access = access; 7894 sp->rs_open_deny = deny; 7895 7896 /* 7897 * we successfully downgraded the share lock, now we need to downgrade 7898 * the open. it is possible that the downgrade was only for a deny 7899 * mode and we have nothing else to do. 7900 */ 7901 if ((fflags & (FREAD|FWRITE)) != 0) 7902 vn_open_downgrade(cs->vp, fflags); 7903 7904 /* Update the stateid */ 7905 next_stateid(&sp->rs_stateid); 7906 resp->open_stateid = sp->rs_stateid.stateid; 7907 7908 rfs4_dbe_unlock(sp->rs_dbe); 7909 7910 *cs->statusp = resp->status = NFS4_OK; 7911 /* Update the lease */ 7912 rfs4_update_lease(sp->rs_owner->ro_client); 7913 /* And the sequence */ 7914 rfs4_update_open_sequence(sp->rs_owner); 7915 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7916 7917 end: 7918 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7919 rfs4_state_rele(sp); 7920 out: 7921 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7922 OPEN_DOWNGRADE4res *, resp); 7923 } 7924 7925 static void * 7926 memstr(const void *s1, const char *s2, size_t n) 7927 { 7928 size_t l = strlen(s2); 7929 char *p = (char *)s1; 7930 7931 while (n >= l) { 7932 if (bcmp(p, s2, l) == 0) 7933 return (p); 7934 p++; 7935 n--; 7936 } 7937 7938 return (NULL); 7939 } 7940 7941 /* 7942 * The logic behind this function is detailed in the NFSv4 RFC in the 7943 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7944 * that section for explicit guidance to server behavior for 7945 * SETCLIENTID. 7946 */ 7947 void 7948 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7949 struct svc_req *req, struct compound_state *cs) 7950 { 7951 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7952 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7953 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7954 rfs4_clntip_t *ci; 7955 bool_t create; 7956 char *addr, *netid; 7957 int len; 7958 7959 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 7960 SETCLIENTID4args *, args); 7961 retry: 7962 newcp = cp_confirmed = cp_unconfirmed = NULL; 7963 7964 /* 7965 * Save the caller's IP address 7966 */ 7967 args->client.cl_addr = 7968 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 7969 7970 /* 7971 * Record if it is a Solaris client that cannot handle referrals. 7972 */ 7973 if (memstr(args->client.id_val, "Solaris", args->client.id_len) && 7974 !memstr(args->client.id_val, "+referrals", args->client.id_len)) { 7975 /* Add a "yes, it's downrev" record */ 7976 create = TRUE; 7977 ci = rfs4_find_clntip(args->client.cl_addr, &create); 7978 ASSERT(ci != NULL); 7979 rfs4_dbe_rele(ci->ri_dbe); 7980 } else { 7981 /* Remove any previous record */ 7982 rfs4_invalidate_clntip(args->client.cl_addr); 7983 } 7984 7985 /* 7986 * In search of an EXISTING client matching the incoming 7987 * request to establish a new client identifier at the server 7988 */ 7989 create = TRUE; 7990 cp = rfs4_findclient(&args->client, &create, NULL); 7991 7992 /* Should never happen */ 7993 ASSERT(cp != NULL); 7994 7995 if (cp == NULL) { 7996 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 7997 goto out; 7998 } 7999 8000 /* 8001 * Easiest case. Client identifier is newly created and is 8002 * unconfirmed. Also note that for this case, no other 8003 * entries exist for the client identifier. Nothing else to 8004 * check. Just setup the response and respond. 8005 */ 8006 if (create) { 8007 *cs->statusp = res->status = NFS4_OK; 8008 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 8009 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8010 cp->rc_confirm_verf; 8011 /* Setup callback information; CB_NULL confirmation later */ 8012 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 8013 8014 rfs4_client_rele(cp); 8015 goto out; 8016 } 8017 8018 /* 8019 * An existing, confirmed client may exist but it may not have 8020 * been active for at least one lease period. If so, then 8021 * "close" the client and create a new client identifier 8022 */ 8023 if (rfs4_lease_expired(cp)) { 8024 rfs4_client_close(cp); 8025 goto retry; 8026 } 8027 8028 if (cp->rc_need_confirm == TRUE) 8029 cp_unconfirmed = cp; 8030 else 8031 cp_confirmed = cp; 8032 8033 cp = NULL; 8034 8035 /* 8036 * We have a confirmed client, now check for an 8037 * unconfimred entry 8038 */ 8039 if (cp_confirmed) { 8040 /* If creds don't match then client identifier is inuse */ 8041 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 8042 rfs4_cbinfo_t *cbp; 8043 /* 8044 * Some one else has established this client 8045 * id. Try and say * who they are. We will use 8046 * the call back address supplied by * the 8047 * first client. 8048 */ 8049 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8050 8051 addr = netid = NULL; 8052 8053 cbp = &cp_confirmed->rc_cbinfo; 8054 if (cbp->cb_callback.cb_location.r_addr && 8055 cbp->cb_callback.cb_location.r_netid) { 8056 cb_client4 *cbcp = &cbp->cb_callback; 8057 8058 len = strlen(cbcp->cb_location.r_addr)+1; 8059 addr = kmem_alloc(len, KM_SLEEP); 8060 bcopy(cbcp->cb_location.r_addr, addr, len); 8061 len = strlen(cbcp->cb_location.r_netid)+1; 8062 netid = kmem_alloc(len, KM_SLEEP); 8063 bcopy(cbcp->cb_location.r_netid, netid, len); 8064 } 8065 8066 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8067 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8068 8069 rfs4_client_rele(cp_confirmed); 8070 } 8071 8072 /* 8073 * Confirmed, creds match, and verifier matches; must 8074 * be an update of the callback info 8075 */ 8076 if (cp_confirmed->rc_nfs_client.verifier == 8077 args->client.verifier) { 8078 /* Setup callback information */ 8079 rfs4_client_setcb(cp_confirmed, &args->callback, 8080 args->callback_ident); 8081 8082 /* everything okay -- move ahead */ 8083 *cs->statusp = res->status = NFS4_OK; 8084 res->SETCLIENTID4res_u.resok4.clientid = 8085 cp_confirmed->rc_clientid; 8086 8087 /* update the confirm_verifier and return it */ 8088 rfs4_client_scv_next(cp_confirmed); 8089 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8090 cp_confirmed->rc_confirm_verf; 8091 8092 rfs4_client_rele(cp_confirmed); 8093 goto out; 8094 } 8095 8096 /* 8097 * Creds match but the verifier doesn't. Must search 8098 * for an unconfirmed client that would be replaced by 8099 * this request. 8100 */ 8101 create = FALSE; 8102 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8103 cp_confirmed); 8104 } 8105 8106 /* 8107 * At this point, we have taken care of the brand new client 8108 * struct, INUSE case, update of an existing, and confirmed 8109 * client struct. 8110 */ 8111 8112 /* 8113 * check to see if things have changed while we originally 8114 * picked up the client struct. If they have, then return and 8115 * retry the processing of this SETCLIENTID request. 8116 */ 8117 if (cp_unconfirmed) { 8118 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8119 if (!cp_unconfirmed->rc_need_confirm) { 8120 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8121 rfs4_client_rele(cp_unconfirmed); 8122 if (cp_confirmed) 8123 rfs4_client_rele(cp_confirmed); 8124 goto retry; 8125 } 8126 /* do away with the old unconfirmed one */ 8127 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8128 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8129 rfs4_client_rele(cp_unconfirmed); 8130 cp_unconfirmed = NULL; 8131 } 8132 8133 /* 8134 * This search will temporarily hide the confirmed client 8135 * struct while a new client struct is created as the 8136 * unconfirmed one. 8137 */ 8138 create = TRUE; 8139 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8140 8141 ASSERT(newcp != NULL); 8142 8143 if (newcp == NULL) { 8144 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8145 rfs4_client_rele(cp_confirmed); 8146 goto out; 8147 } 8148 8149 /* 8150 * If one was not created, then a similar request must be in 8151 * process so release and start over with this one 8152 */ 8153 if (create != TRUE) { 8154 rfs4_client_rele(newcp); 8155 if (cp_confirmed) 8156 rfs4_client_rele(cp_confirmed); 8157 goto retry; 8158 } 8159 8160 *cs->statusp = res->status = NFS4_OK; 8161 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8162 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8163 newcp->rc_confirm_verf; 8164 /* Setup callback information; CB_NULL confirmation later */ 8165 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8166 8167 newcp->rc_cp_confirmed = cp_confirmed; 8168 8169 rfs4_client_rele(newcp); 8170 8171 out: 8172 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8173 SETCLIENTID4res *, res); 8174 } 8175 8176 /*ARGSUSED*/ 8177 void 8178 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8179 struct svc_req *req, struct compound_state *cs) 8180 { 8181 SETCLIENTID_CONFIRM4args *args = 8182 &argop->nfs_argop4_u.opsetclientid_confirm; 8183 SETCLIENTID_CONFIRM4res *res = 8184 &resop->nfs_resop4_u.opsetclientid_confirm; 8185 rfs4_client_t *cp, *cptoclose = NULL; 8186 8187 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8188 struct compound_state *, cs, 8189 SETCLIENTID_CONFIRM4args *, args); 8190 8191 *cs->statusp = res->status = NFS4_OK; 8192 8193 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8194 8195 if (cp == NULL) { 8196 *cs->statusp = res->status = 8197 rfs4_check_clientid(&args->clientid, 1); 8198 goto out; 8199 } 8200 8201 if (!creds_ok(cp, req, cs)) { 8202 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8203 rfs4_client_rele(cp); 8204 goto out; 8205 } 8206 8207 /* If the verifier doesn't match, the record doesn't match */ 8208 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8209 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8210 rfs4_client_rele(cp); 8211 goto out; 8212 } 8213 8214 rfs4_dbe_lock(cp->rc_dbe); 8215 cp->rc_need_confirm = FALSE; 8216 if (cp->rc_cp_confirmed) { 8217 cptoclose = cp->rc_cp_confirmed; 8218 cptoclose->rc_ss_remove = 1; 8219 cp->rc_cp_confirmed = NULL; 8220 } 8221 8222 /* 8223 * Update the client's associated server instance, if it's changed 8224 * since the client was created. 8225 */ 8226 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8227 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8228 8229 /* 8230 * Record clientid in stable storage. 8231 * Must be done after server instance has been assigned. 8232 */ 8233 rfs4_ss_clid(cp); 8234 8235 rfs4_dbe_unlock(cp->rc_dbe); 8236 8237 if (cptoclose) 8238 /* don't need to rele, client_close does it */ 8239 rfs4_client_close(cptoclose); 8240 8241 /* If needed, initiate CB_NULL call for callback path */ 8242 rfs4_deleg_cb_check(cp); 8243 rfs4_update_lease(cp); 8244 8245 /* 8246 * Check to see if client can perform reclaims 8247 */ 8248 rfs4_ss_chkclid(cp); 8249 8250 rfs4_client_rele(cp); 8251 8252 out: 8253 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8254 struct compound_state *, cs, 8255 SETCLIENTID_CONFIRM4 *, res); 8256 } 8257 8258 8259 /*ARGSUSED*/ 8260 void 8261 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8262 struct svc_req *req, struct compound_state *cs) 8263 { 8264 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8265 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8266 rfs4_state_t *sp; 8267 nfsstat4 status; 8268 8269 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8270 CLOSE4args *, args); 8271 8272 if (cs->vp == NULL) { 8273 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8274 goto out; 8275 } 8276 8277 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8278 if (status != NFS4_OK) { 8279 *cs->statusp = resp->status = status; 8280 goto out; 8281 } 8282 8283 /* Ensure specified filehandle matches */ 8284 if (cs->vp != sp->rs_finfo->rf_vp) { 8285 rfs4_state_rele(sp); 8286 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8287 goto out; 8288 } 8289 8290 /* hold off other access to open_owner while we tinker */ 8291 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8292 8293 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8294 case NFS4_CHECK_STATEID_OKAY: 8295 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8296 resop) != NFS4_CHKSEQ_OKAY) { 8297 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8298 goto end; 8299 } 8300 break; 8301 case NFS4_CHECK_STATEID_OLD: 8302 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8303 goto end; 8304 case NFS4_CHECK_STATEID_BAD: 8305 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8306 goto end; 8307 case NFS4_CHECK_STATEID_EXPIRED: 8308 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8309 goto end; 8310 case NFS4_CHECK_STATEID_CLOSED: 8311 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8312 goto end; 8313 case NFS4_CHECK_STATEID_UNCONFIRMED: 8314 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8315 goto end; 8316 case NFS4_CHECK_STATEID_REPLAY: 8317 /* Check the sequence id for the open owner */ 8318 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8319 resop)) { 8320 case NFS4_CHKSEQ_OKAY: 8321 /* 8322 * This is replayed stateid; if seqid matches 8323 * next expected, then client is using wrong seqid. 8324 */ 8325 /* FALL THROUGH */ 8326 case NFS4_CHKSEQ_BAD: 8327 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8328 goto end; 8329 case NFS4_CHKSEQ_REPLAY: 8330 /* 8331 * Note this case is the duplicate case so 8332 * resp->status is already set. 8333 */ 8334 *cs->statusp = resp->status; 8335 rfs4_update_lease(sp->rs_owner->ro_client); 8336 goto end; 8337 } 8338 break; 8339 default: 8340 ASSERT(FALSE); 8341 break; 8342 } 8343 8344 rfs4_dbe_lock(sp->rs_dbe); 8345 8346 /* Update the stateid. */ 8347 next_stateid(&sp->rs_stateid); 8348 resp->open_stateid = sp->rs_stateid.stateid; 8349 8350 rfs4_dbe_unlock(sp->rs_dbe); 8351 8352 rfs4_update_lease(sp->rs_owner->ro_client); 8353 rfs4_update_open_sequence(sp->rs_owner); 8354 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8355 8356 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8357 8358 *cs->statusp = resp->status = status; 8359 8360 end: 8361 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8362 rfs4_state_rele(sp); 8363 out: 8364 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8365 CLOSE4res *, resp); 8366 } 8367 8368 /* 8369 * Manage the counts on the file struct and close all file locks 8370 */ 8371 /*ARGSUSED*/ 8372 void 8373 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8374 bool_t close_of_client) 8375 { 8376 rfs4_file_t *fp = sp->rs_finfo; 8377 rfs4_lo_state_t *lsp; 8378 int fflags = 0; 8379 8380 /* 8381 * If this call is part of the larger closing down of client 8382 * state then it is just easier to release all locks 8383 * associated with this client instead of going through each 8384 * individual file and cleaning locks there. 8385 */ 8386 if (close_of_client) { 8387 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8388 !list_is_empty(&sp->rs_lostatelist) && 8389 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8390 /* Is the PxFS kernel module loaded? */ 8391 if (lm_remove_file_locks != NULL) { 8392 int new_sysid; 8393 8394 /* Encode the cluster nodeid in new sysid */ 8395 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8396 lm_set_nlmid_flk(&new_sysid); 8397 8398 /* 8399 * This PxFS routine removes file locks for a 8400 * client over all nodes of a cluster. 8401 */ 8402 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8403 "lm_remove_file_locks(sysid=0x%x)\n", 8404 new_sysid)); 8405 (*lm_remove_file_locks)(new_sysid); 8406 } else { 8407 struct flock64 flk; 8408 8409 /* Release all locks for this client */ 8410 flk.l_type = F_UNLKSYS; 8411 flk.l_whence = 0; 8412 flk.l_start = 0; 8413 flk.l_len = 0; 8414 flk.l_sysid = 8415 sp->rs_owner->ro_client->rc_sysidt; 8416 flk.l_pid = 0; 8417 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8418 &flk, F_REMOTELOCK | FREAD | FWRITE, 8419 (u_offset_t)0, NULL, CRED(), NULL); 8420 } 8421 8422 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8423 } 8424 } 8425 8426 /* 8427 * Release all locks on this file by this lock owner or at 8428 * least mark the locks as having been released 8429 */ 8430 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8431 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8432 lsp->rls_locks_cleaned = TRUE; 8433 8434 /* Was this already taken care of above? */ 8435 if (!close_of_client && 8436 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8437 (void) cleanlocks(sp->rs_finfo->rf_vp, 8438 lsp->rls_locker->rl_pid, 8439 lsp->rls_locker->rl_client->rc_sysidt); 8440 } 8441 8442 /* 8443 * Release any shrlocks associated with this open state ID. 8444 * This must be done before the rfs4_state gets marked closed. 8445 */ 8446 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8447 (void) rfs4_unshare(sp); 8448 8449 if (sp->rs_open_access) { 8450 rfs4_dbe_lock(fp->rf_dbe); 8451 8452 /* 8453 * Decrement the count for each access and deny bit that this 8454 * state has contributed to the file. 8455 * If the file counts go to zero 8456 * clear the appropriate bit in the appropriate mask. 8457 */ 8458 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8459 fp->rf_access_read--; 8460 fflags |= FREAD; 8461 if (fp->rf_access_read == 0) 8462 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8463 } 8464 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8465 fp->rf_access_write--; 8466 fflags |= FWRITE; 8467 if (fp->rf_access_write == 0) 8468 fp->rf_share_access &= 8469 ~OPEN4_SHARE_ACCESS_WRITE; 8470 } 8471 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8472 fp->rf_deny_read--; 8473 if (fp->rf_deny_read == 0) 8474 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8475 } 8476 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8477 fp->rf_deny_write--; 8478 if (fp->rf_deny_write == 0) 8479 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8480 } 8481 8482 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8483 8484 rfs4_dbe_unlock(fp->rf_dbe); 8485 8486 sp->rs_open_access = 0; 8487 sp->rs_open_deny = 0; 8488 } 8489 } 8490 8491 /* 8492 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8493 */ 8494 static nfsstat4 8495 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8496 { 8497 rfs4_lockowner_t *lo; 8498 rfs4_client_t *cp; 8499 uint32_t len; 8500 8501 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8502 if (lo != NULL) { 8503 cp = lo->rl_client; 8504 if (rfs4_lease_expired(cp)) { 8505 rfs4_lockowner_rele(lo); 8506 rfs4_dbe_hold(cp->rc_dbe); 8507 rfs4_client_close(cp); 8508 return (NFS4ERR_EXPIRED); 8509 } 8510 dp->owner.clientid = lo->rl_owner.clientid; 8511 len = lo->rl_owner.owner_len; 8512 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8513 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8514 dp->owner.owner_len = len; 8515 rfs4_lockowner_rele(lo); 8516 goto finish; 8517 } 8518 8519 /* 8520 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8521 * of the client id contain the boot time for a NFS4 lock. So we 8522 * fabricate and identity by setting clientid to the sysid, and 8523 * the lock owner to the pid. 8524 */ 8525 dp->owner.clientid = flk->l_sysid; 8526 len = sizeof (pid_t); 8527 dp->owner.owner_len = len; 8528 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8529 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8530 finish: 8531 dp->offset = flk->l_start; 8532 dp->length = flk->l_len; 8533 8534 if (flk->l_type == F_RDLCK) 8535 dp->locktype = READ_LT; 8536 else if (flk->l_type == F_WRLCK) 8537 dp->locktype = WRITE_LT; 8538 else 8539 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8540 8541 return (NFS4_OK); 8542 } 8543 8544 static int 8545 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8546 { 8547 int error; 8548 struct flock64 flk; 8549 int i; 8550 clock_t delaytime; 8551 int cmd; 8552 8553 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8554 retry: 8555 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8556 8557 for (i = 0; i < rfs4_maxlock_tries; i++) { 8558 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8559 error = VOP_FRLOCK(vp, cmd, 8560 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8561 8562 if (error != EAGAIN && error != EACCES) 8563 break; 8564 8565 if (i < rfs4_maxlock_tries - 1) { 8566 delay(delaytime); 8567 delaytime *= 2; 8568 } 8569 } 8570 8571 if (error == EAGAIN || error == EACCES) { 8572 /* Get the owner of the lock */ 8573 flk = *flock; 8574 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8575 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 8576 (u_offset_t)0, NULL, cred, NULL) == 0) { 8577 if (flk.l_type == F_UNLCK) { 8578 /* No longer locked, retry */ 8579 goto retry; 8580 } 8581 *flock = flk; 8582 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8583 F_GETLK, &flk); 8584 } 8585 } 8586 8587 return (error); 8588 } 8589 8590 /*ARGSUSED*/ 8591 static nfsstat4 8592 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8593 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8594 { 8595 nfsstat4 status; 8596 rfs4_lockowner_t *lo = lsp->rls_locker; 8597 rfs4_state_t *sp = lsp->rls_state; 8598 struct flock64 flock; 8599 int16_t ltype; 8600 int flag; 8601 int error; 8602 sysid_t sysid; 8603 LOCK4res *lres; 8604 8605 if (rfs4_lease_expired(lo->rl_client)) { 8606 return (NFS4ERR_EXPIRED); 8607 } 8608 8609 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8610 return (status); 8611 8612 /* Check for zero length. To lock to end of file use all ones for V4 */ 8613 if (length == 0) 8614 return (NFS4ERR_INVAL); 8615 else if (length == (length4)(~0)) 8616 length = 0; /* Posix to end of file */ 8617 8618 retry: 8619 rfs4_dbe_lock(sp->rs_dbe); 8620 if (sp->rs_closed) { 8621 rfs4_dbe_unlock(sp->rs_dbe); 8622 return (NFS4ERR_OLD_STATEID); 8623 } 8624 8625 if (resop->resop != OP_LOCKU) { 8626 switch (locktype) { 8627 case READ_LT: 8628 case READW_LT: 8629 if ((sp->rs_share_access 8630 & OPEN4_SHARE_ACCESS_READ) == 0) { 8631 rfs4_dbe_unlock(sp->rs_dbe); 8632 8633 return (NFS4ERR_OPENMODE); 8634 } 8635 ltype = F_RDLCK; 8636 break; 8637 case WRITE_LT: 8638 case WRITEW_LT: 8639 if ((sp->rs_share_access 8640 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8641 rfs4_dbe_unlock(sp->rs_dbe); 8642 8643 return (NFS4ERR_OPENMODE); 8644 } 8645 ltype = F_WRLCK; 8646 break; 8647 } 8648 } else 8649 ltype = F_UNLCK; 8650 8651 flock.l_type = ltype; 8652 flock.l_whence = 0; /* SEEK_SET */ 8653 flock.l_start = offset; 8654 flock.l_len = length; 8655 flock.l_sysid = sysid; 8656 flock.l_pid = lsp->rls_locker->rl_pid; 8657 8658 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8659 if (flock.l_len < 0 || flock.l_start < 0) { 8660 rfs4_dbe_unlock(sp->rs_dbe); 8661 return (NFS4ERR_INVAL); 8662 } 8663 8664 /* 8665 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8666 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8667 */ 8668 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8669 8670 error = setlock(sp->rs_finfo->rf_vp, &flock, flag, cred); 8671 if (error == 0) { 8672 rfs4_dbe_lock(lsp->rls_dbe); 8673 next_stateid(&lsp->rls_lockid); 8674 rfs4_dbe_unlock(lsp->rls_dbe); 8675 } 8676 8677 rfs4_dbe_unlock(sp->rs_dbe); 8678 8679 /* 8680 * N.B. We map error values to nfsv4 errors. This is differrent 8681 * than puterrno4 routine. 8682 */ 8683 switch (error) { 8684 case 0: 8685 status = NFS4_OK; 8686 break; 8687 case EAGAIN: 8688 case EACCES: /* Old value */ 8689 /* Can only get here if op is OP_LOCK */ 8690 ASSERT(resop->resop == OP_LOCK); 8691 lres = &resop->nfs_resop4_u.oplock; 8692 status = NFS4ERR_DENIED; 8693 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8694 == NFS4ERR_EXPIRED) 8695 goto retry; 8696 break; 8697 case ENOLCK: 8698 status = NFS4ERR_DELAY; 8699 break; 8700 case EOVERFLOW: 8701 status = NFS4ERR_INVAL; 8702 break; 8703 case EINVAL: 8704 status = NFS4ERR_NOTSUPP; 8705 break; 8706 default: 8707 status = NFS4ERR_SERVERFAULT; 8708 break; 8709 } 8710 8711 return (status); 8712 } 8713 8714 /*ARGSUSED*/ 8715 void 8716 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8717 struct svc_req *req, struct compound_state *cs) 8718 { 8719 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8720 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8721 nfsstat4 status; 8722 stateid4 *stateid; 8723 rfs4_lockowner_t *lo; 8724 rfs4_client_t *cp; 8725 rfs4_state_t *sp = NULL; 8726 rfs4_lo_state_t *lsp = NULL; 8727 bool_t ls_sw_held = FALSE; 8728 bool_t create = TRUE; 8729 bool_t lcreate = TRUE; 8730 bool_t dup_lock = FALSE; 8731 int rc; 8732 8733 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8734 LOCK4args *, args); 8735 8736 if (cs->vp == NULL) { 8737 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8738 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8739 cs, LOCK4res *, resp); 8740 return; 8741 } 8742 8743 if (args->locker.new_lock_owner) { 8744 /* Create a new lockowner for this instance */ 8745 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8746 8747 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8748 8749 stateid = &olo->open_stateid; 8750 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8751 if (status != NFS4_OK) { 8752 NFS4_DEBUG(rfs4_debug, 8753 (CE_NOTE, "Get state failed in lock %d", status)); 8754 *cs->statusp = resp->status = status; 8755 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8756 cs, LOCK4res *, resp); 8757 return; 8758 } 8759 8760 /* Ensure specified filehandle matches */ 8761 if (cs->vp != sp->rs_finfo->rf_vp) { 8762 rfs4_state_rele(sp); 8763 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8764 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8765 cs, LOCK4res *, resp); 8766 return; 8767 } 8768 8769 /* hold off other access to open_owner while we tinker */ 8770 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8771 8772 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8773 case NFS4_CHECK_STATEID_OLD: 8774 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8775 goto end; 8776 case NFS4_CHECK_STATEID_BAD: 8777 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8778 goto end; 8779 case NFS4_CHECK_STATEID_EXPIRED: 8780 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8781 goto end; 8782 case NFS4_CHECK_STATEID_UNCONFIRMED: 8783 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8784 goto end; 8785 case NFS4_CHECK_STATEID_CLOSED: 8786 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8787 goto end; 8788 case NFS4_CHECK_STATEID_OKAY: 8789 case NFS4_CHECK_STATEID_REPLAY: 8790 switch (rfs4_check_olo_seqid(olo->open_seqid, 8791 sp->rs_owner, resop)) { 8792 case NFS4_CHKSEQ_OKAY: 8793 if (rc == NFS4_CHECK_STATEID_OKAY) 8794 break; 8795 /* 8796 * This is replayed stateid; if seqid 8797 * matches next expected, then client 8798 * is using wrong seqid. 8799 */ 8800 /* FALLTHROUGH */ 8801 case NFS4_CHKSEQ_BAD: 8802 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8803 goto end; 8804 case NFS4_CHKSEQ_REPLAY: 8805 /* This is a duplicate LOCK request */ 8806 dup_lock = TRUE; 8807 8808 /* 8809 * For a duplicate we do not want to 8810 * create a new lockowner as it should 8811 * already exist. 8812 * Turn off the lockowner create flag. 8813 */ 8814 lcreate = FALSE; 8815 } 8816 break; 8817 } 8818 8819 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8820 if (lo == NULL) { 8821 NFS4_DEBUG(rfs4_debug, 8822 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8823 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8824 goto end; 8825 } 8826 8827 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8828 if (lsp == NULL) { 8829 rfs4_update_lease(sp->rs_owner->ro_client); 8830 /* 8831 * Only update theh open_seqid if this is not 8832 * a duplicate request 8833 */ 8834 if (dup_lock == FALSE) { 8835 rfs4_update_open_sequence(sp->rs_owner); 8836 } 8837 8838 NFS4_DEBUG(rfs4_debug, 8839 (CE_NOTE, "rfs4_op_lock: no state")); 8840 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8841 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8842 rfs4_lockowner_rele(lo); 8843 goto end; 8844 } 8845 8846 /* 8847 * This is the new_lock_owner branch and the client is 8848 * supposed to be associating a new lock_owner with 8849 * the open file at this point. If we find that a 8850 * lock_owner/state association already exists and a 8851 * successful LOCK request was returned to the client, 8852 * an error is returned to the client since this is 8853 * not appropriate. The client should be using the 8854 * existing lock_owner branch. 8855 */ 8856 if (dup_lock == FALSE && create == FALSE) { 8857 if (lsp->rls_lock_completed == TRUE) { 8858 *cs->statusp = 8859 resp->status = NFS4ERR_BAD_SEQID; 8860 rfs4_lockowner_rele(lo); 8861 goto end; 8862 } 8863 } 8864 8865 rfs4_update_lease(sp->rs_owner->ro_client); 8866 8867 /* 8868 * Only update theh open_seqid if this is not 8869 * a duplicate request 8870 */ 8871 if (dup_lock == FALSE) { 8872 rfs4_update_open_sequence(sp->rs_owner); 8873 } 8874 8875 /* 8876 * If this is a duplicate lock request, just copy the 8877 * previously saved reply and return. 8878 */ 8879 if (dup_lock == TRUE) { 8880 /* verify that lock_seqid's match */ 8881 if (lsp->rls_seqid != olo->lock_seqid) { 8882 NFS4_DEBUG(rfs4_debug, 8883 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 8884 "lsp->seqid=%d old->seqid=%d", 8885 lsp->rls_seqid, olo->lock_seqid)); 8886 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8887 } else { 8888 rfs4_copy_reply(resop, &lsp->rls_reply); 8889 /* 8890 * Make sure to copy the just 8891 * retrieved reply status into the 8892 * overall compound status 8893 */ 8894 *cs->statusp = resp->status; 8895 } 8896 rfs4_lockowner_rele(lo); 8897 goto end; 8898 } 8899 8900 rfs4_dbe_lock(lsp->rls_dbe); 8901 8902 /* Make sure to update the lock sequence id */ 8903 lsp->rls_seqid = olo->lock_seqid; 8904 8905 NFS4_DEBUG(rfs4_debug, 8906 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 8907 8908 /* 8909 * This is used to signify the newly created lockowner 8910 * stateid and its sequence number. The checks for 8911 * sequence number and increment don't occur on the 8912 * very first lock request for a lockowner. 8913 */ 8914 lsp->rls_skip_seqid_check = TRUE; 8915 8916 /* hold off other access to lsp while we tinker */ 8917 rfs4_sw_enter(&lsp->rls_sw); 8918 ls_sw_held = TRUE; 8919 8920 rfs4_dbe_unlock(lsp->rls_dbe); 8921 8922 rfs4_lockowner_rele(lo); 8923 } else { 8924 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 8925 /* get lsp and hold the lock on the underlying file struct */ 8926 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 8927 != NFS4_OK) { 8928 *cs->statusp = resp->status = status; 8929 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8930 cs, LOCK4res *, resp); 8931 return; 8932 } 8933 create = FALSE; /* We didn't create lsp */ 8934 8935 /* Ensure specified filehandle matches */ 8936 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 8937 rfs4_lo_state_rele(lsp, TRUE); 8938 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8939 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8940 cs, LOCK4res *, resp); 8941 return; 8942 } 8943 8944 /* hold off other access to lsp while we tinker */ 8945 rfs4_sw_enter(&lsp->rls_sw); 8946 ls_sw_held = TRUE; 8947 8948 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 8949 /* 8950 * The stateid looks like it was okay (expected to be 8951 * the next one) 8952 */ 8953 case NFS4_CHECK_STATEID_OKAY: 8954 /* 8955 * The sequence id is now checked. Determine 8956 * if this is a replay or if it is in the 8957 * expected (next) sequence. In the case of a 8958 * replay, there are two replay conditions 8959 * that may occur. The first is the normal 8960 * condition where a LOCK is done with a 8961 * NFS4_OK response and the stateid is 8962 * updated. That case is handled below when 8963 * the stateid is identified as a REPLAY. The 8964 * second is the case where an error is 8965 * returned, like NFS4ERR_DENIED, and the 8966 * sequence number is updated but the stateid 8967 * is not updated. This second case is dealt 8968 * with here. So it may seem odd that the 8969 * stateid is okay but the sequence id is a 8970 * replay but it is okay. 8971 */ 8972 switch (rfs4_check_lock_seqid( 8973 args->locker.locker4_u.lock_owner.lock_seqid, 8974 lsp, resop)) { 8975 case NFS4_CHKSEQ_REPLAY: 8976 if (resp->status != NFS4_OK) { 8977 /* 8978 * Here is our replay and need 8979 * to verify that the last 8980 * response was an error. 8981 */ 8982 *cs->statusp = resp->status; 8983 goto end; 8984 } 8985 /* 8986 * This is done since the sequence id 8987 * looked like a replay but it didn't 8988 * pass our check so a BAD_SEQID is 8989 * returned as a result. 8990 */ 8991 /*FALLTHROUGH*/ 8992 case NFS4_CHKSEQ_BAD: 8993 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8994 goto end; 8995 case NFS4_CHKSEQ_OKAY: 8996 /* Everything looks okay move ahead */ 8997 break; 8998 } 8999 break; 9000 case NFS4_CHECK_STATEID_OLD: 9001 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9002 goto end; 9003 case NFS4_CHECK_STATEID_BAD: 9004 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9005 goto end; 9006 case NFS4_CHECK_STATEID_EXPIRED: 9007 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9008 goto end; 9009 case NFS4_CHECK_STATEID_CLOSED: 9010 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9011 goto end; 9012 case NFS4_CHECK_STATEID_REPLAY: 9013 switch (rfs4_check_lock_seqid( 9014 args->locker.locker4_u.lock_owner.lock_seqid, 9015 lsp, resop)) { 9016 case NFS4_CHKSEQ_OKAY: 9017 /* 9018 * This is a replayed stateid; if 9019 * seqid matches the next expected, 9020 * then client is using wrong seqid. 9021 */ 9022 case NFS4_CHKSEQ_BAD: 9023 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9024 goto end; 9025 case NFS4_CHKSEQ_REPLAY: 9026 rfs4_update_lease(lsp->rls_locker->rl_client); 9027 *cs->statusp = status = resp->status; 9028 goto end; 9029 } 9030 break; 9031 default: 9032 ASSERT(FALSE); 9033 break; 9034 } 9035 9036 rfs4_update_lock_sequence(lsp); 9037 rfs4_update_lease(lsp->rls_locker->rl_client); 9038 } 9039 9040 /* 9041 * NFS4 only allows locking on regular files, so 9042 * verify type of object. 9043 */ 9044 if (cs->vp->v_type != VREG) { 9045 if (cs->vp->v_type == VDIR) 9046 status = NFS4ERR_ISDIR; 9047 else 9048 status = NFS4ERR_INVAL; 9049 goto out; 9050 } 9051 9052 cp = lsp->rls_state->rs_owner->ro_client; 9053 9054 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9055 status = NFS4ERR_GRACE; 9056 goto out; 9057 } 9058 9059 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9060 status = NFS4ERR_NO_GRACE; 9061 goto out; 9062 } 9063 9064 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9065 status = NFS4ERR_NO_GRACE; 9066 goto out; 9067 } 9068 9069 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9070 cs->deleg = TRUE; 9071 9072 status = rfs4_do_lock(lsp, args->locktype, 9073 args->offset, args->length, cs->cr, resop); 9074 9075 out: 9076 lsp->rls_skip_seqid_check = FALSE; 9077 9078 *cs->statusp = resp->status = status; 9079 9080 if (status == NFS4_OK) { 9081 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9082 lsp->rls_lock_completed = TRUE; 9083 } 9084 /* 9085 * Only update the "OPEN" response here if this was a new 9086 * lock_owner 9087 */ 9088 if (sp) 9089 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9090 9091 rfs4_update_lock_resp(lsp, resop); 9092 9093 end: 9094 if (lsp) { 9095 if (ls_sw_held) 9096 rfs4_sw_exit(&lsp->rls_sw); 9097 /* 9098 * If an sp obtained, then the lsp does not represent 9099 * a lock on the file struct. 9100 */ 9101 if (sp != NULL) 9102 rfs4_lo_state_rele(lsp, FALSE); 9103 else 9104 rfs4_lo_state_rele(lsp, TRUE); 9105 } 9106 if (sp) { 9107 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9108 rfs4_state_rele(sp); 9109 } 9110 9111 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9112 LOCK4res *, resp); 9113 } 9114 9115 /* free function for LOCK/LOCKT */ 9116 static void 9117 lock_denied_free(nfs_resop4 *resop) 9118 { 9119 LOCK4denied *dp = NULL; 9120 9121 switch (resop->resop) { 9122 case OP_LOCK: 9123 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9124 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9125 break; 9126 case OP_LOCKT: 9127 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9128 dp = &resop->nfs_resop4_u.oplockt.denied; 9129 break; 9130 default: 9131 break; 9132 } 9133 9134 if (dp) 9135 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9136 } 9137 9138 /*ARGSUSED*/ 9139 void 9140 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9141 struct svc_req *req, struct compound_state *cs) 9142 { 9143 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9144 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9145 nfsstat4 status; 9146 stateid4 *stateid = &args->lock_stateid; 9147 rfs4_lo_state_t *lsp; 9148 9149 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9150 LOCKU4args *, args); 9151 9152 if (cs->vp == NULL) { 9153 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9154 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9155 LOCKU4res *, resp); 9156 return; 9157 } 9158 9159 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9160 *cs->statusp = resp->status = status; 9161 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9162 LOCKU4res *, resp); 9163 return; 9164 } 9165 9166 /* Ensure specified filehandle matches */ 9167 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9168 rfs4_lo_state_rele(lsp, TRUE); 9169 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9170 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9171 LOCKU4res *, resp); 9172 return; 9173 } 9174 9175 /* hold off other access to lsp while we tinker */ 9176 rfs4_sw_enter(&lsp->rls_sw); 9177 9178 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9179 case NFS4_CHECK_STATEID_OKAY: 9180 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9181 != NFS4_CHKSEQ_OKAY) { 9182 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9183 goto end; 9184 } 9185 break; 9186 case NFS4_CHECK_STATEID_OLD: 9187 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9188 goto end; 9189 case NFS4_CHECK_STATEID_BAD: 9190 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9191 goto end; 9192 case NFS4_CHECK_STATEID_EXPIRED: 9193 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9194 goto end; 9195 case NFS4_CHECK_STATEID_CLOSED: 9196 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9197 goto end; 9198 case NFS4_CHECK_STATEID_REPLAY: 9199 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9200 case NFS4_CHKSEQ_OKAY: 9201 /* 9202 * This is a replayed stateid; if 9203 * seqid matches the next expected, 9204 * then client is using wrong seqid. 9205 */ 9206 case NFS4_CHKSEQ_BAD: 9207 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9208 goto end; 9209 case NFS4_CHKSEQ_REPLAY: 9210 rfs4_update_lease(lsp->rls_locker->rl_client); 9211 *cs->statusp = status = resp->status; 9212 goto end; 9213 } 9214 break; 9215 default: 9216 ASSERT(FALSE); 9217 break; 9218 } 9219 9220 rfs4_update_lock_sequence(lsp); 9221 rfs4_update_lease(lsp->rls_locker->rl_client); 9222 9223 /* 9224 * NFS4 only allows locking on regular files, so 9225 * verify type of object. 9226 */ 9227 if (cs->vp->v_type != VREG) { 9228 if (cs->vp->v_type == VDIR) 9229 status = NFS4ERR_ISDIR; 9230 else 9231 status = NFS4ERR_INVAL; 9232 goto out; 9233 } 9234 9235 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9236 status = NFS4ERR_GRACE; 9237 goto out; 9238 } 9239 9240 status = rfs4_do_lock(lsp, args->locktype, 9241 args->offset, args->length, cs->cr, resop); 9242 9243 out: 9244 *cs->statusp = resp->status = status; 9245 9246 if (status == NFS4_OK) 9247 resp->lock_stateid = lsp->rls_lockid.stateid; 9248 9249 rfs4_update_lock_resp(lsp, resop); 9250 9251 end: 9252 rfs4_sw_exit(&lsp->rls_sw); 9253 rfs4_lo_state_rele(lsp, TRUE); 9254 9255 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9256 LOCKU4res *, resp); 9257 } 9258 9259 /* 9260 * LOCKT is a best effort routine, the client can not be guaranteed that 9261 * the status return is still in effect by the time the reply is received. 9262 * They are numerous race conditions in this routine, but we are not required 9263 * and can not be accurate. 9264 */ 9265 /*ARGSUSED*/ 9266 void 9267 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9268 struct svc_req *req, struct compound_state *cs) 9269 { 9270 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9271 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9272 rfs4_lockowner_t *lo; 9273 rfs4_client_t *cp; 9274 bool_t create = FALSE; 9275 struct flock64 flk; 9276 int error; 9277 int flag = FREAD | FWRITE; 9278 int ltype; 9279 length4 posix_length; 9280 sysid_t sysid; 9281 pid_t pid; 9282 9283 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9284 LOCKT4args *, args); 9285 9286 if (cs->vp == NULL) { 9287 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9288 goto out; 9289 } 9290 9291 /* 9292 * NFS4 only allows locking on regular files, so 9293 * verify type of object. 9294 */ 9295 if (cs->vp->v_type != VREG) { 9296 if (cs->vp->v_type == VDIR) 9297 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9298 else 9299 *cs->statusp = resp->status = NFS4ERR_INVAL; 9300 goto out; 9301 } 9302 9303 /* 9304 * Check out the clientid to ensure the server knows about it 9305 * so that we correctly inform the client of a server reboot. 9306 */ 9307 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9308 == NULL) { 9309 *cs->statusp = resp->status = 9310 rfs4_check_clientid(&args->owner.clientid, 0); 9311 goto out; 9312 } 9313 if (rfs4_lease_expired(cp)) { 9314 rfs4_client_close(cp); 9315 /* 9316 * Protocol doesn't allow returning NFS4ERR_STALE as 9317 * other operations do on this check so STALE_CLIENTID 9318 * is returned instead 9319 */ 9320 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9321 goto out; 9322 } 9323 9324 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9325 *cs->statusp = resp->status = NFS4ERR_GRACE; 9326 rfs4_client_rele(cp); 9327 goto out; 9328 } 9329 rfs4_client_rele(cp); 9330 9331 resp->status = NFS4_OK; 9332 9333 switch (args->locktype) { 9334 case READ_LT: 9335 case READW_LT: 9336 ltype = F_RDLCK; 9337 break; 9338 case WRITE_LT: 9339 case WRITEW_LT: 9340 ltype = F_WRLCK; 9341 break; 9342 } 9343 9344 posix_length = args->length; 9345 /* Check for zero length. To lock to end of file use all ones for V4 */ 9346 if (posix_length == 0) { 9347 *cs->statusp = resp->status = NFS4ERR_INVAL; 9348 goto out; 9349 } else if (posix_length == (length4)(~0)) { 9350 posix_length = 0; /* Posix to end of file */ 9351 } 9352 9353 /* Find or create a lockowner */ 9354 lo = rfs4_findlockowner(&args->owner, &create); 9355 9356 if (lo) { 9357 pid = lo->rl_pid; 9358 if ((resp->status = 9359 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9360 goto err; 9361 } else { 9362 pid = 0; 9363 sysid = lockt_sysid; 9364 } 9365 retry: 9366 flk.l_type = ltype; 9367 flk.l_whence = 0; /* SEEK_SET */ 9368 flk.l_start = args->offset; 9369 flk.l_len = posix_length; 9370 flk.l_sysid = sysid; 9371 flk.l_pid = pid; 9372 flag |= F_REMOTELOCK; 9373 9374 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9375 9376 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9377 if (flk.l_len < 0 || flk.l_start < 0) { 9378 resp->status = NFS4ERR_INVAL; 9379 goto err; 9380 } 9381 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9382 NULL, cs->cr, NULL); 9383 9384 /* 9385 * N.B. We map error values to nfsv4 errors. This is differrent 9386 * than puterrno4 routine. 9387 */ 9388 switch (error) { 9389 case 0: 9390 if (flk.l_type == F_UNLCK) 9391 resp->status = NFS4_OK; 9392 else { 9393 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9394 goto retry; 9395 resp->status = NFS4ERR_DENIED; 9396 } 9397 break; 9398 case EOVERFLOW: 9399 resp->status = NFS4ERR_INVAL; 9400 break; 9401 case EINVAL: 9402 resp->status = NFS4ERR_NOTSUPP; 9403 break; 9404 default: 9405 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9406 error); 9407 resp->status = NFS4ERR_SERVERFAULT; 9408 break; 9409 } 9410 9411 err: 9412 if (lo) 9413 rfs4_lockowner_rele(lo); 9414 *cs->statusp = resp->status; 9415 out: 9416 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9417 LOCKT4res *, resp); 9418 } 9419 9420 int 9421 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9422 { 9423 int err; 9424 int cmd; 9425 vnode_t *vp; 9426 struct shrlock shr; 9427 struct shr_locowner shr_loco; 9428 int fflags = 0; 9429 9430 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9431 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9432 9433 if (sp->rs_closed) 9434 return (NFS4ERR_OLD_STATEID); 9435 9436 vp = sp->rs_finfo->rf_vp; 9437 ASSERT(vp); 9438 9439 shr.s_access = shr.s_deny = 0; 9440 9441 if (access & OPEN4_SHARE_ACCESS_READ) { 9442 fflags |= FREAD; 9443 shr.s_access |= F_RDACC; 9444 } 9445 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9446 fflags |= FWRITE; 9447 shr.s_access |= F_WRACC; 9448 } 9449 ASSERT(shr.s_access); 9450 9451 if (deny & OPEN4_SHARE_DENY_READ) 9452 shr.s_deny |= F_RDDNY; 9453 if (deny & OPEN4_SHARE_DENY_WRITE) 9454 shr.s_deny |= F_WRDNY; 9455 9456 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9457 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9458 shr_loco.sl_pid = shr.s_pid; 9459 shr_loco.sl_id = shr.s_sysid; 9460 shr.s_owner = (caddr_t)&shr_loco; 9461 shr.s_own_len = sizeof (shr_loco); 9462 9463 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9464 9465 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9466 if (err != 0) { 9467 if (err == EAGAIN) 9468 err = NFS4ERR_SHARE_DENIED; 9469 else 9470 err = puterrno4(err); 9471 return (err); 9472 } 9473 9474 sp->rs_share_access |= access; 9475 sp->rs_share_deny |= deny; 9476 9477 return (0); 9478 } 9479 9480 int 9481 rfs4_unshare(rfs4_state_t *sp) 9482 { 9483 int err; 9484 struct shrlock shr; 9485 struct shr_locowner shr_loco; 9486 9487 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9488 9489 if (sp->rs_closed || sp->rs_share_access == 0) 9490 return (0); 9491 9492 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9493 ASSERT(sp->rs_finfo->rf_vp); 9494 9495 shr.s_access = shr.s_deny = 0; 9496 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9497 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9498 shr_loco.sl_pid = shr.s_pid; 9499 shr_loco.sl_id = shr.s_sysid; 9500 shr.s_owner = (caddr_t)&shr_loco; 9501 shr.s_own_len = sizeof (shr_loco); 9502 9503 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9504 NULL); 9505 if (err != 0) { 9506 err = puterrno4(err); 9507 return (err); 9508 } 9509 9510 sp->rs_share_access = 0; 9511 sp->rs_share_deny = 0; 9512 9513 return (0); 9514 9515 } 9516 9517 static int 9518 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9519 { 9520 struct clist *wcl; 9521 count4 count = rok->data_len; 9522 int wlist_len; 9523 9524 wcl = args->wlist; 9525 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9526 return (FALSE); 9527 } 9528 wcl = args->wlist; 9529 rok->wlist_len = wlist_len; 9530 rok->wlist = wcl; 9531 return (TRUE); 9532 } 9533 9534 /* tunable to disable server referrals */ 9535 int rfs4_no_referrals = 0; 9536 9537 /* 9538 * Find an NFS record in reparse point data. 9539 * Returns 0 for success and <0 or an errno value on failure. 9540 */ 9541 int 9542 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9543 { 9544 int err; 9545 char *stype, *val; 9546 nvlist_t *nvl; 9547 nvpair_t *curr; 9548 9549 if ((nvl = reparse_init()) == NULL) 9550 return (-1); 9551 9552 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9553 reparse_free(nvl); 9554 return (err); 9555 } 9556 9557 curr = NULL; 9558 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9559 if ((stype = nvpair_name(curr)) == NULL) { 9560 reparse_free(nvl); 9561 return (-2); 9562 } 9563 if (strncasecmp(stype, "NFS", 3) == 0) 9564 break; 9565 } 9566 9567 if ((curr == NULL) || 9568 (nvpair_value_string(curr, &val))) { 9569 reparse_free(nvl); 9570 return (-3); 9571 } 9572 *nvlp = nvl; 9573 *svcp = stype; 9574 *datap = val; 9575 return (0); 9576 } 9577 9578 int 9579 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9580 { 9581 nvlist_t *nvl; 9582 char *s, *d; 9583 9584 if (rfs4_no_referrals != 0) 9585 return (B_FALSE); 9586 9587 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9588 return (B_FALSE); 9589 9590 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9591 return (B_FALSE); 9592 9593 reparse_free(nvl); 9594 9595 return (B_TRUE); 9596 } 9597 9598 /* 9599 * There is a user-level copy of this routine in ref_subr.c. 9600 * Changes should be kept in sync. 9601 */ 9602 static int 9603 nfs4_create_components(char *path, component4 *comp4) 9604 { 9605 int slen, plen, ncomp; 9606 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9607 9608 if (path == NULL) 9609 return (0); 9610 9611 plen = strlen(path) + 1; /* include the terminator */ 9612 ori_path = path; 9613 ncomp = 0; 9614 9615 /* count number of components in the path */ 9616 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9617 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9618 if ((slen = nxtc - path) == 0) { 9619 path = nxtc + 1; 9620 continue; 9621 } 9622 9623 if (comp4 != NULL) { 9624 bcopy(path, buf, slen); 9625 buf[slen] = '\0'; 9626 (void) str_to_utf8(buf, &comp4[ncomp]); 9627 } 9628 9629 ncomp++; /* 1 valid component */ 9630 path = nxtc + 1; 9631 } 9632 if (*nxtc == '\0' || *nxtc == '\n') 9633 break; 9634 } 9635 9636 return (ncomp); 9637 } 9638 9639 /* 9640 * There is a user-level copy of this routine in ref_subr.c. 9641 * Changes should be kept in sync. 9642 */ 9643 static int 9644 make_pathname4(char *path, pathname4 *pathname) 9645 { 9646 int ncomp; 9647 component4 *comp4; 9648 9649 if (pathname == NULL) 9650 return (0); 9651 9652 if (path == NULL) { 9653 pathname->pathname4_val = NULL; 9654 pathname->pathname4_len = 0; 9655 return (0); 9656 } 9657 9658 /* count number of components to alloc buffer */ 9659 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9660 pathname->pathname4_val = NULL; 9661 pathname->pathname4_len = 0; 9662 return (0); 9663 } 9664 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9665 9666 /* copy components into allocated buffer */ 9667 ncomp = nfs4_create_components(path, comp4); 9668 9669 pathname->pathname4_val = comp4; 9670 pathname->pathname4_len = ncomp; 9671 9672 return (ncomp); 9673 } 9674 9675 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9676 9677 fs_locations4 * 9678 fetch_referral(vnode_t *vp, cred_t *cr) 9679 { 9680 nvlist_t *nvl; 9681 char *stype, *sdata; 9682 fs_locations4 *result; 9683 char buf[1024]; 9684 size_t bufsize; 9685 XDR xdr; 9686 int err; 9687 9688 /* 9689 * Check attrs to ensure it's a reparse point 9690 */ 9691 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9692 return (NULL); 9693 9694 /* 9695 * Look for an NFS record and get the type and data 9696 */ 9697 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9698 return (NULL); 9699 9700 /* 9701 * With the type and data, upcall to get the referral 9702 */ 9703 bufsize = sizeof (buf); 9704 bzero(buf, sizeof (buf)); 9705 err = reparse_kderef((const char *)stype, (const char *)sdata, 9706 buf, &bufsize); 9707 reparse_free(nvl); 9708 9709 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9710 char *, stype, char *, sdata, char *, buf, int, err); 9711 if (err) { 9712 cmn_err(CE_NOTE, 9713 "reparsed daemon not running: unable to get referral (%d)", 9714 err); 9715 return (NULL); 9716 } 9717 9718 /* 9719 * We get an XDR'ed record back from the kderef call 9720 */ 9721 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9722 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9723 err = xdr_fs_locations4(&xdr, result); 9724 XDR_DESTROY(&xdr); 9725 if (err != TRUE) { 9726 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9727 int, err); 9728 return (NULL); 9729 } 9730 9731 /* 9732 * Look at path to recover fs_root, ignoring the leading '/' 9733 */ 9734 (void) make_pathname4(vp->v_path, &result->fs_root); 9735 9736 return (result); 9737 } 9738 9739 char * 9740 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9741 { 9742 fs_locations4 *fsl; 9743 fs_location4 *fs; 9744 char *server, *path, *symbuf; 9745 static char *prefix = "/net/"; 9746 int i, size, npaths; 9747 uint_t len; 9748 9749 /* Get the referral */ 9750 if ((fsl = fetch_referral(vp, cr)) == NULL) 9751 return (NULL); 9752 9753 /* Deal with only the first location and first server */ 9754 fs = &fsl->locations_val[0]; 9755 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9756 if (server == NULL) { 9757 rfs4_free_fs_locations4(fsl); 9758 kmem_free(fsl, sizeof (fs_locations4)); 9759 return (NULL); 9760 } 9761 9762 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 9763 size = strlen(prefix) + len; 9764 for (i = 0; i < fs->rootpath.pathname4_len; i++) 9765 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 9766 9767 /* Allocate the symlink buffer and fill it */ 9768 symbuf = kmem_zalloc(size, KM_SLEEP); 9769 (void) strcat(symbuf, prefix); 9770 (void) strcat(symbuf, server); 9771 kmem_free(server, len); 9772 9773 npaths = 0; 9774 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 9775 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 9776 if (path == NULL) 9777 continue; 9778 (void) strcat(symbuf, "/"); 9779 (void) strcat(symbuf, path); 9780 npaths++; 9781 kmem_free(path, len); 9782 } 9783 9784 rfs4_free_fs_locations4(fsl); 9785 kmem_free(fsl, sizeof (fs_locations4)); 9786 9787 if (strsz != NULL) 9788 *strsz = size; 9789 return (symbuf); 9790 } 9791 9792 /* 9793 * Check to see if we have a downrev Solaris client, so that we 9794 * can send it a symlink instead of a referral. 9795 */ 9796 int 9797 client_is_downrev(struct svc_req *req) 9798 { 9799 struct sockaddr *ca; 9800 rfs4_clntip_t *ci; 9801 bool_t create = FALSE; 9802 int is_downrev; 9803 9804 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 9805 ASSERT(ca); 9806 ci = rfs4_find_clntip(ca, &create); 9807 if (ci == NULL) 9808 return (0); 9809 is_downrev = ci->ri_no_referrals; 9810 rfs4_dbe_rele(ci->ri_dbe); 9811 return (is_downrev); 9812 } 9813