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 2016 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 struct exportinfo *oexi = NULL; 876 fid_t fid; 877 uint_t count, i; 878 secinfo4 *resok_val; 879 struct secinfo *secp; 880 seconfig_t *si; 881 bool_t did_traverse = FALSE; 882 int dotdot, walk; 883 884 dvp = cs->vp; 885 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 886 887 /* 888 * If dotdotting, then need to check whether it's above the 889 * root of a filesystem, or above an export point. 890 */ 891 if (dotdot) { 892 893 /* 894 * If dotdotting at the root of a filesystem, then 895 * need to traverse back to the mounted-on filesystem 896 * and do the dotdot lookup there. 897 */ 898 if (cs->vp->v_flag & VROOT) { 899 900 /* 901 * If at the system root, then can 902 * go up no further. 903 */ 904 if (VN_CMP(dvp, rootdir)) 905 return (puterrno4(ENOENT)); 906 907 /* 908 * Traverse back to the mounted-on filesystem 909 */ 910 dvp = untraverse(cs->vp); 911 912 /* 913 * Set the different_export flag so we remember 914 * to pick up a new exportinfo entry for 915 * this new filesystem. 916 */ 917 different_export = 1; 918 } else { 919 920 /* 921 * If dotdotting above an export point then set 922 * the different_export to get new export info. 923 */ 924 different_export = nfs_exported(cs->exi, cs->vp); 925 } 926 } 927 928 /* 929 * Get the vnode for the component "nm". 930 */ 931 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 932 NULL, NULL, NULL); 933 if (error) 934 return (puterrno4(error)); 935 936 /* 937 * If the vnode is in a pseudo filesystem, or if the security flavor 938 * used in the request is valid but not an explicitly shared flavor, 939 * or the access bit indicates that this is a limited access, 940 * check whether this vnode is visible. 941 */ 942 if (!different_export && 943 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 944 cs->access & CS_ACCESS_LIMITED)) { 945 if (! nfs_visible(cs->exi, vp, &different_export)) { 946 VN_RELE(vp); 947 return (puterrno4(ENOENT)); 948 } 949 } 950 951 /* 952 * If it's a mountpoint, then traverse it. 953 */ 954 if (vn_ismntpt(vp)) { 955 if ((error = traverse(&vp)) != 0) { 956 VN_RELE(vp); 957 return (puterrno4(error)); 958 } 959 /* remember that we had to traverse mountpoint */ 960 did_traverse = TRUE; 961 different_export = 1; 962 } else if (vp->v_vfsp != dvp->v_vfsp) { 963 /* 964 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 965 * then vp is probably an LOFS object. We don't need the 966 * realvp, we just need to know that we might have crossed 967 * a server fs boundary and need to call checkexport. 968 * (LOFS lookup hides server fs mountpoints, and actually calls 969 * traverse) 970 */ 971 different_export = 1; 972 } 973 974 /* 975 * Get the export information for it. 976 */ 977 if (different_export) { 978 979 bzero(&fid, sizeof (fid)); 980 fid.fid_len = MAXFIDSZ; 981 error = vop_fid_pseudo(vp, &fid); 982 if (error) { 983 VN_RELE(vp); 984 return (puterrno4(error)); 985 } 986 987 if (dotdot) 988 oexi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 989 else 990 oexi = checkexport(&vp->v_vfsp->vfs_fsid, &fid, vp); 991 992 if (oexi == NULL) { 993 if (did_traverse == TRUE) { 994 /* 995 * If this vnode is a mounted-on vnode, 996 * but the mounted-on file system is not 997 * exported, send back the secinfo for 998 * the exported node that the mounted-on 999 * vnode lives in. 1000 */ 1001 exi = cs->exi; 1002 } else { 1003 VN_RELE(vp); 1004 return (puterrno4(EACCES)); 1005 } 1006 } else { 1007 exi = oexi; 1008 } 1009 } else { 1010 exi = cs->exi; 1011 } 1012 ASSERT(exi != NULL); 1013 1014 1015 /* 1016 * Create the secinfo result based on the security information 1017 * from the exportinfo structure (exi). 1018 * 1019 * Return all flavors for a pseudo node. 1020 * For a real export node, return the flavor that the client 1021 * has access with. 1022 */ 1023 rw_enter(&exported_lock, RW_READER); 1024 if (PSEUDO(exi)) { 1025 count = exi->exi_export.ex_seccnt; /* total sec count */ 1026 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1027 secp = exi->exi_export.ex_secinfo; 1028 1029 for (i = 0; i < count; i++) { 1030 si = &secp[i].s_secinfo; 1031 resok_val[i].flavor = si->sc_rpcnum; 1032 if (resok_val[i].flavor == RPCSEC_GSS) { 1033 rpcsec_gss_info *info; 1034 1035 info = &resok_val[i].flavor_info; 1036 info->qop = si->sc_qop; 1037 info->service = (rpc_gss_svc_t)si->sc_service; 1038 1039 /* get oid opaque data */ 1040 info->oid.sec_oid4_len = 1041 si->sc_gss_mech_type->length; 1042 info->oid.sec_oid4_val = kmem_alloc( 1043 si->sc_gss_mech_type->length, KM_SLEEP); 1044 bcopy( 1045 si->sc_gss_mech_type->elements, 1046 info->oid.sec_oid4_val, 1047 info->oid.sec_oid4_len); 1048 } 1049 } 1050 resp->SECINFO4resok_len = count; 1051 resp->SECINFO4resok_val = resok_val; 1052 } else { 1053 int ret_cnt = 0, k = 0; 1054 int *flavor_list; 1055 1056 count = exi->exi_export.ex_seccnt; /* total sec count */ 1057 secp = exi->exi_export.ex_secinfo; 1058 1059 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1060 /* find out which flavors to return */ 1061 for (i = 0; i < count; i ++) { 1062 int access, flavor, perm; 1063 1064 flavor = secp[i].s_secinfo.sc_nfsnum; 1065 perm = secp[i].s_flags; 1066 1067 access = nfsauth4_secinfo_access(exi, cs->req, 1068 flavor, perm, cs->basecr); 1069 1070 if (! (access & NFSAUTH_DENIED) && 1071 ! (access & NFSAUTH_WRONGSEC)) { 1072 flavor_list[ret_cnt] = flavor; 1073 ret_cnt++; 1074 } 1075 } 1076 1077 /* Create the returning SECINFO value */ 1078 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1079 1080 for (i = 0; i < count; i++) { 1081 /* 1082 * If the flavor is in the flavor list, 1083 * fill in resok_val. 1084 */ 1085 si = &secp[i].s_secinfo; 1086 if (in_flavor_list(si->sc_nfsnum, 1087 flavor_list, ret_cnt)) { 1088 resok_val[k].flavor = si->sc_rpcnum; 1089 if (resok_val[k].flavor == RPCSEC_GSS) { 1090 rpcsec_gss_info *info; 1091 1092 info = &resok_val[k].flavor_info; 1093 info->qop = si->sc_qop; 1094 info->service = (rpc_gss_svc_t) 1095 si->sc_service; 1096 1097 /* get oid opaque data */ 1098 info->oid.sec_oid4_len = 1099 si->sc_gss_mech_type->length; 1100 info->oid.sec_oid4_val = kmem_alloc( 1101 si->sc_gss_mech_type->length, 1102 KM_SLEEP); 1103 bcopy(si->sc_gss_mech_type->elements, 1104 info->oid.sec_oid4_val, 1105 info->oid.sec_oid4_len); 1106 } 1107 k++; 1108 } 1109 if (k >= ret_cnt) 1110 break; 1111 } 1112 resp->SECINFO4resok_len = ret_cnt; 1113 resp->SECINFO4resok_val = resok_val; 1114 kmem_free(flavor_list, count * sizeof (int)); 1115 } 1116 rw_exit(&exported_lock); 1117 if (oexi != NULL) 1118 exi_rele(oexi); 1119 1120 VN_RELE(vp); 1121 return (NFS4_OK); 1122 } 1123 1124 /* 1125 * SECINFO (Operation 33): Obtain required security information on 1126 * the component name in the format of (security-mechanism-oid, qop, service) 1127 * triplets. 1128 */ 1129 /* ARGSUSED */ 1130 static void 1131 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1132 struct compound_state *cs) 1133 { 1134 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1135 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1136 utf8string *utfnm = &args->name; 1137 uint_t len; 1138 char *nm; 1139 struct sockaddr *ca; 1140 char *name = NULL; 1141 nfsstat4 status = NFS4_OK; 1142 1143 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1144 SECINFO4args *, args); 1145 1146 /* 1147 * Current file handle (cfh) should have been set before getting 1148 * into this function. If not, return error. 1149 */ 1150 if (cs->vp == NULL) { 1151 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1152 goto out; 1153 } 1154 1155 if (cs->vp->v_type != VDIR) { 1156 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1157 goto out; 1158 } 1159 1160 /* 1161 * Verify the component name. If failed, error out, but 1162 * do not error out if the component name is a "..". 1163 * SECINFO will return its parents secinfo data for SECINFO "..". 1164 */ 1165 status = utf8_dir_verify(utfnm); 1166 if (status != NFS4_OK) { 1167 if (utfnm->utf8string_len != 2 || 1168 utfnm->utf8string_val[0] != '.' || 1169 utfnm->utf8string_val[1] != '.') { 1170 *cs->statusp = resp->status = status; 1171 goto out; 1172 } 1173 } 1174 1175 nm = utf8_to_str(utfnm, &len, NULL); 1176 if (nm == NULL) { 1177 *cs->statusp = resp->status = NFS4ERR_INVAL; 1178 goto out; 1179 } 1180 1181 if (len > MAXNAMELEN) { 1182 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1183 kmem_free(nm, len); 1184 goto out; 1185 } 1186 1187 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1188 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1189 MAXPATHLEN + 1); 1190 1191 if (name == NULL) { 1192 *cs->statusp = resp->status = NFS4ERR_INVAL; 1193 kmem_free(nm, len); 1194 goto out; 1195 } 1196 1197 1198 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1199 1200 if (name != nm) 1201 kmem_free(name, MAXPATHLEN + 1); 1202 kmem_free(nm, len); 1203 1204 out: 1205 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1206 SECINFO4res *, resp); 1207 } 1208 1209 /* 1210 * Free SECINFO result. 1211 */ 1212 /* ARGSUSED */ 1213 static void 1214 rfs4_op_secinfo_free(nfs_resop4 *resop) 1215 { 1216 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1217 int count, i; 1218 secinfo4 *resok_val; 1219 1220 /* If this is not an Ok result, nothing to free. */ 1221 if (resp->status != NFS4_OK) { 1222 return; 1223 } 1224 1225 count = resp->SECINFO4resok_len; 1226 resok_val = resp->SECINFO4resok_val; 1227 1228 for (i = 0; i < count; i++) { 1229 if (resok_val[i].flavor == RPCSEC_GSS) { 1230 rpcsec_gss_info *info; 1231 1232 info = &resok_val[i].flavor_info; 1233 kmem_free(info->oid.sec_oid4_val, 1234 info->oid.sec_oid4_len); 1235 } 1236 } 1237 kmem_free(resok_val, count * sizeof (secinfo4)); 1238 resp->SECINFO4resok_len = 0; 1239 resp->SECINFO4resok_val = NULL; 1240 } 1241 1242 /* ARGSUSED */ 1243 static void 1244 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1245 struct compound_state *cs) 1246 { 1247 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1248 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1249 int error; 1250 vnode_t *vp; 1251 struct vattr va; 1252 int checkwriteperm; 1253 cred_t *cr = cs->cr; 1254 bslabel_t *clabel, *slabel; 1255 ts_label_t *tslabel; 1256 boolean_t admin_low_client; 1257 1258 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1259 ACCESS4args *, args); 1260 1261 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1262 if (cs->access == CS_ACCESS_DENIED) { 1263 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1264 goto out; 1265 } 1266 #endif 1267 if (cs->vp == NULL) { 1268 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1269 goto out; 1270 } 1271 1272 ASSERT(cr != NULL); 1273 1274 vp = cs->vp; 1275 1276 /* 1277 * If the file system is exported read only, it is not appropriate 1278 * to check write permissions for regular files and directories. 1279 * Special files are interpreted by the client, so the underlying 1280 * permissions are sent back to the client for interpretation. 1281 */ 1282 if (rdonly4(req, cs) && 1283 (vp->v_type == VREG || vp->v_type == VDIR)) 1284 checkwriteperm = 0; 1285 else 1286 checkwriteperm = 1; 1287 1288 /* 1289 * XXX 1290 * We need the mode so that we can correctly determine access 1291 * permissions relative to a mandatory lock file. Access to 1292 * mandatory lock files is denied on the server, so it might 1293 * as well be reflected to the server during the open. 1294 */ 1295 va.va_mask = AT_MODE; 1296 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1297 if (error) { 1298 *cs->statusp = resp->status = puterrno4(error); 1299 goto out; 1300 } 1301 resp->access = 0; 1302 resp->supported = 0; 1303 1304 if (is_system_labeled()) { 1305 ASSERT(req->rq_label != NULL); 1306 clabel = req->rq_label; 1307 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1308 "got client label from request(1)", 1309 struct svc_req *, req); 1310 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1311 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1312 *cs->statusp = resp->status = puterrno4(EACCES); 1313 goto out; 1314 } 1315 slabel = label2bslabel(tslabel); 1316 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1317 char *, "got server label(1) for vp(2)", 1318 bslabel_t *, slabel, vnode_t *, vp); 1319 1320 admin_low_client = B_FALSE; 1321 } else 1322 admin_low_client = B_TRUE; 1323 } 1324 1325 if (args->access & ACCESS4_READ) { 1326 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1327 if (!error && !MANDLOCK(vp, va.va_mode) && 1328 (!is_system_labeled() || admin_low_client || 1329 bldominates(clabel, slabel))) 1330 resp->access |= ACCESS4_READ; 1331 resp->supported |= ACCESS4_READ; 1332 } 1333 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1334 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1335 if (!error && (!is_system_labeled() || admin_low_client || 1336 bldominates(clabel, slabel))) 1337 resp->access |= ACCESS4_LOOKUP; 1338 resp->supported |= ACCESS4_LOOKUP; 1339 } 1340 if (checkwriteperm && 1341 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1342 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1343 if (!error && !MANDLOCK(vp, va.va_mode) && 1344 (!is_system_labeled() || admin_low_client || 1345 blequal(clabel, slabel))) 1346 resp->access |= 1347 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1348 resp->supported |= 1349 resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND); 1350 } 1351 1352 if (checkwriteperm && 1353 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1354 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1355 if (!error && (!is_system_labeled() || admin_low_client || 1356 blequal(clabel, slabel))) 1357 resp->access |= ACCESS4_DELETE; 1358 resp->supported |= ACCESS4_DELETE; 1359 } 1360 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1361 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1362 if (!error && !MANDLOCK(vp, va.va_mode) && 1363 (!is_system_labeled() || admin_low_client || 1364 bldominates(clabel, slabel))) 1365 resp->access |= ACCESS4_EXECUTE; 1366 resp->supported |= ACCESS4_EXECUTE; 1367 } 1368 1369 if (is_system_labeled() && !admin_low_client) 1370 label_rele(tslabel); 1371 1372 *cs->statusp = resp->status = NFS4_OK; 1373 out: 1374 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1375 ACCESS4res *, resp); 1376 } 1377 1378 /* ARGSUSED */ 1379 static void 1380 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1381 struct compound_state *cs) 1382 { 1383 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1384 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1385 int error; 1386 vnode_t *vp = cs->vp; 1387 cred_t *cr = cs->cr; 1388 vattr_t va; 1389 1390 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1391 COMMIT4args *, args); 1392 1393 if (vp == NULL) { 1394 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1395 goto out; 1396 } 1397 if (cs->access == CS_ACCESS_DENIED) { 1398 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1399 goto out; 1400 } 1401 1402 if (args->offset + args->count < args->offset) { 1403 *cs->statusp = resp->status = NFS4ERR_INVAL; 1404 goto out; 1405 } 1406 1407 va.va_mask = AT_UID; 1408 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1409 1410 /* 1411 * If we can't get the attributes, then we can't do the 1412 * right access checking. So, we'll fail the request. 1413 */ 1414 if (error) { 1415 *cs->statusp = resp->status = puterrno4(error); 1416 goto out; 1417 } 1418 if (rdonly4(req, cs)) { 1419 *cs->statusp = resp->status = NFS4ERR_ROFS; 1420 goto out; 1421 } 1422 1423 if (vp->v_type != VREG) { 1424 if (vp->v_type == VDIR) 1425 resp->status = NFS4ERR_ISDIR; 1426 else 1427 resp->status = NFS4ERR_INVAL; 1428 *cs->statusp = resp->status; 1429 goto out; 1430 } 1431 1432 if (crgetuid(cr) != va.va_uid && 1433 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1434 *cs->statusp = resp->status = puterrno4(error); 1435 goto out; 1436 } 1437 1438 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1439 1440 if (error) { 1441 *cs->statusp = resp->status = puterrno4(error); 1442 goto out; 1443 } 1444 1445 *cs->statusp = resp->status = NFS4_OK; 1446 resp->writeverf = Write4verf; 1447 out: 1448 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1449 COMMIT4res *, resp); 1450 } 1451 1452 /* 1453 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1454 * was completed. It does the nfsv4 create for special files. 1455 */ 1456 /* ARGSUSED */ 1457 static vnode_t * 1458 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1459 struct compound_state *cs, vattr_t *vap, char *nm) 1460 { 1461 int error; 1462 cred_t *cr = cs->cr; 1463 vnode_t *dvp = cs->vp; 1464 vnode_t *vp = NULL; 1465 int mode; 1466 enum vcexcl excl; 1467 1468 switch (args->type) { 1469 case NF4CHR: 1470 case NF4BLK: 1471 if (secpolicy_sys_devices(cr) != 0) { 1472 *cs->statusp = resp->status = NFS4ERR_PERM; 1473 return (NULL); 1474 } 1475 if (args->type == NF4CHR) 1476 vap->va_type = VCHR; 1477 else 1478 vap->va_type = VBLK; 1479 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1480 args->ftype4_u.devdata.specdata2); 1481 vap->va_mask |= AT_RDEV; 1482 break; 1483 case NF4SOCK: 1484 vap->va_type = VSOCK; 1485 break; 1486 case NF4FIFO: 1487 vap->va_type = VFIFO; 1488 break; 1489 default: 1490 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1491 return (NULL); 1492 } 1493 1494 /* 1495 * Must specify the mode. 1496 */ 1497 if (!(vap->va_mask & AT_MODE)) { 1498 *cs->statusp = resp->status = NFS4ERR_INVAL; 1499 return (NULL); 1500 } 1501 1502 excl = EXCL; 1503 1504 mode = 0; 1505 1506 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1507 if (error) { 1508 *cs->statusp = resp->status = puterrno4(error); 1509 return (NULL); 1510 } 1511 return (vp); 1512 } 1513 1514 /* 1515 * nfsv4 create is used to create non-regular files. For regular files, 1516 * use nfsv4 open. 1517 */ 1518 /* ARGSUSED */ 1519 static void 1520 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1521 struct compound_state *cs) 1522 { 1523 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1524 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1525 int error; 1526 struct vattr bva, iva, iva2, ava, *vap; 1527 cred_t *cr = cs->cr; 1528 vnode_t *dvp = cs->vp; 1529 vnode_t *vp = NULL; 1530 vnode_t *realvp; 1531 char *nm, *lnm; 1532 uint_t len, llen; 1533 int syncval = 0; 1534 struct nfs4_svgetit_arg sarg; 1535 struct nfs4_ntov_table ntov; 1536 struct statvfs64 sb; 1537 nfsstat4 status; 1538 struct sockaddr *ca; 1539 char *name = NULL; 1540 char *lname = NULL; 1541 1542 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1543 CREATE4args *, args); 1544 1545 resp->attrset = 0; 1546 1547 if (dvp == NULL) { 1548 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1549 goto out; 1550 } 1551 1552 /* 1553 * If there is an unshared filesystem mounted on this vnode, 1554 * do not allow to create an object in this directory. 1555 */ 1556 if (vn_ismntpt(dvp)) { 1557 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1558 goto out; 1559 } 1560 1561 /* Verify that type is correct */ 1562 switch (args->type) { 1563 case NF4LNK: 1564 case NF4BLK: 1565 case NF4CHR: 1566 case NF4SOCK: 1567 case NF4FIFO: 1568 case NF4DIR: 1569 break; 1570 default: 1571 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1572 goto out; 1573 }; 1574 1575 if (cs->access == CS_ACCESS_DENIED) { 1576 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1577 goto out; 1578 } 1579 if (dvp->v_type != VDIR) { 1580 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1581 goto out; 1582 } 1583 status = utf8_dir_verify(&args->objname); 1584 if (status != NFS4_OK) { 1585 *cs->statusp = resp->status = status; 1586 goto out; 1587 } 1588 1589 if (rdonly4(req, cs)) { 1590 *cs->statusp = resp->status = NFS4ERR_ROFS; 1591 goto out; 1592 } 1593 1594 /* 1595 * Name of newly created object 1596 */ 1597 nm = utf8_to_fn(&args->objname, &len, NULL); 1598 if (nm == NULL) { 1599 *cs->statusp = resp->status = NFS4ERR_INVAL; 1600 goto out; 1601 } 1602 1603 if (len > MAXNAMELEN) { 1604 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1605 kmem_free(nm, len); 1606 goto out; 1607 } 1608 1609 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1610 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1611 MAXPATHLEN + 1); 1612 1613 if (name == NULL) { 1614 *cs->statusp = resp->status = NFS4ERR_INVAL; 1615 kmem_free(nm, len); 1616 goto out; 1617 } 1618 1619 resp->attrset = 0; 1620 1621 sarg.sbp = &sb; 1622 sarg.is_referral = B_FALSE; 1623 nfs4_ntov_table_init(&ntov); 1624 1625 status = do_rfs4_set_attrs(&resp->attrset, 1626 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1627 1628 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1629 status = NFS4ERR_INVAL; 1630 1631 if (status != NFS4_OK) { 1632 *cs->statusp = resp->status = status; 1633 if (name != nm) 1634 kmem_free(name, MAXPATHLEN + 1); 1635 kmem_free(nm, len); 1636 nfs4_ntov_table_free(&ntov, &sarg); 1637 resp->attrset = 0; 1638 goto out; 1639 } 1640 1641 /* Get "before" change value */ 1642 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1643 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1644 if (error) { 1645 *cs->statusp = resp->status = puterrno4(error); 1646 if (name != nm) 1647 kmem_free(name, MAXPATHLEN + 1); 1648 kmem_free(nm, len); 1649 nfs4_ntov_table_free(&ntov, &sarg); 1650 resp->attrset = 0; 1651 goto out; 1652 } 1653 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1654 1655 vap = sarg.vap; 1656 1657 /* 1658 * Set the default initial values for attributes when the parent 1659 * directory does not have the VSUID/VSGID bit set and they have 1660 * not been specified in createattrs. 1661 */ 1662 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1663 vap->va_uid = crgetuid(cr); 1664 vap->va_mask |= AT_UID; 1665 } 1666 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1667 vap->va_gid = crgetgid(cr); 1668 vap->va_mask |= AT_GID; 1669 } 1670 1671 vap->va_mask |= AT_TYPE; 1672 switch (args->type) { 1673 case NF4DIR: 1674 vap->va_type = VDIR; 1675 if ((vap->va_mask & AT_MODE) == 0) { 1676 vap->va_mode = 0700; /* default: owner rwx only */ 1677 vap->va_mask |= AT_MODE; 1678 } 1679 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1680 if (error) 1681 break; 1682 1683 /* 1684 * Get the initial "after" sequence number, if it fails, 1685 * set to zero 1686 */ 1687 iva.va_mask = AT_SEQ; 1688 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1689 iva.va_seq = 0; 1690 break; 1691 case NF4LNK: 1692 vap->va_type = VLNK; 1693 if ((vap->va_mask & AT_MODE) == 0) { 1694 vap->va_mode = 0700; /* default: owner rwx only */ 1695 vap->va_mask |= AT_MODE; 1696 } 1697 1698 /* 1699 * symlink names must be treated as data 1700 */ 1701 lnm = utf8_to_str((utf8string *)&args->ftype4_u.linkdata, 1702 &llen, NULL); 1703 1704 if (lnm == NULL) { 1705 *cs->statusp = resp->status = NFS4ERR_INVAL; 1706 if (name != nm) 1707 kmem_free(name, MAXPATHLEN + 1); 1708 kmem_free(nm, len); 1709 nfs4_ntov_table_free(&ntov, &sarg); 1710 resp->attrset = 0; 1711 goto out; 1712 } 1713 1714 if (llen > MAXPATHLEN) { 1715 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1716 if (name != nm) 1717 kmem_free(name, MAXPATHLEN + 1); 1718 kmem_free(nm, len); 1719 kmem_free(lnm, llen); 1720 nfs4_ntov_table_free(&ntov, &sarg); 1721 resp->attrset = 0; 1722 goto out; 1723 } 1724 1725 lname = nfscmd_convname(ca, cs->exi, lnm, 1726 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1727 1728 if (lname == NULL) { 1729 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1730 if (name != nm) 1731 kmem_free(name, MAXPATHLEN + 1); 1732 kmem_free(nm, len); 1733 kmem_free(lnm, llen); 1734 nfs4_ntov_table_free(&ntov, &sarg); 1735 resp->attrset = 0; 1736 goto out; 1737 } 1738 1739 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1740 if (lname != lnm) 1741 kmem_free(lname, MAXPATHLEN + 1); 1742 kmem_free(lnm, llen); 1743 if (error) 1744 break; 1745 1746 /* 1747 * Get the initial "after" sequence number, if it fails, 1748 * set to zero 1749 */ 1750 iva.va_mask = AT_SEQ; 1751 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1752 iva.va_seq = 0; 1753 1754 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, 1755 NULL, NULL, NULL); 1756 if (error) 1757 break; 1758 1759 /* 1760 * va_seq is not safe over VOP calls, check it again 1761 * if it has changed zero out iva to force atomic = FALSE. 1762 */ 1763 iva2.va_mask = AT_SEQ; 1764 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1765 iva2.va_seq != iva.va_seq) 1766 iva.va_seq = 0; 1767 break; 1768 default: 1769 /* 1770 * probably a special file. 1771 */ 1772 if ((vap->va_mask & AT_MODE) == 0) { 1773 vap->va_mode = 0600; /* default: owner rw only */ 1774 vap->va_mask |= AT_MODE; 1775 } 1776 syncval = FNODSYNC; 1777 /* 1778 * We know this will only generate one VOP call 1779 */ 1780 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); 1781 1782 if (vp == NULL) { 1783 if (name != nm) 1784 kmem_free(name, MAXPATHLEN + 1); 1785 kmem_free(nm, len); 1786 nfs4_ntov_table_free(&ntov, &sarg); 1787 resp->attrset = 0; 1788 goto out; 1789 } 1790 1791 /* 1792 * Get the initial "after" sequence number, if it fails, 1793 * set to zero 1794 */ 1795 iva.va_mask = AT_SEQ; 1796 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1797 iva.va_seq = 0; 1798 1799 break; 1800 } 1801 if (name != nm) 1802 kmem_free(name, MAXPATHLEN + 1); 1803 kmem_free(nm, len); 1804 1805 if (error) { 1806 *cs->statusp = resp->status = puterrno4(error); 1807 } 1808 1809 /* 1810 * Force modified data and metadata out to stable storage. 1811 */ 1812 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1813 1814 if (resp->status != NFS4_OK) { 1815 if (vp != NULL) 1816 VN_RELE(vp); 1817 nfs4_ntov_table_free(&ntov, &sarg); 1818 resp->attrset = 0; 1819 goto out; 1820 } 1821 1822 /* 1823 * Finish setup of cinfo response, "before" value already set. 1824 * Get "after" change value, if it fails, simply return the 1825 * before value. 1826 */ 1827 ava.va_mask = AT_CTIME|AT_SEQ; 1828 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1829 ava.va_ctime = bva.va_ctime; 1830 ava.va_seq = 0; 1831 } 1832 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1833 1834 /* 1835 * True verification that object was created with correct 1836 * attrs is impossible. The attrs could have been changed 1837 * immediately after object creation. If attributes did 1838 * not verify, the only recourse for the server is to 1839 * destroy the object. Maybe if some attrs (like gid) 1840 * are set incorrectly, the object should be destroyed; 1841 * however, seems bad as a default policy. Do we really 1842 * want to destroy an object over one of the times not 1843 * verifying correctly? For these reasons, the server 1844 * currently sets bits in attrset for createattrs 1845 * that were set; however, no verification is done. 1846 * 1847 * vmask_to_nmask accounts for vattr bits set on create 1848 * [do_rfs4_set_attrs() only sets resp bits for 1849 * non-vattr/vfs bits.] 1850 * Mask off any bits set by default so as not to return 1851 * more attrset bits than were requested in createattrs 1852 */ 1853 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1854 resp->attrset &= args->createattrs.attrmask; 1855 nfs4_ntov_table_free(&ntov, &sarg); 1856 1857 error = makefh4(&cs->fh, vp, cs->exi); 1858 if (error) { 1859 *cs->statusp = resp->status = puterrno4(error); 1860 } 1861 1862 /* 1863 * The cinfo.atomic = TRUE only if we got no errors, we have 1864 * non-zero va_seq's, and it has incremented by exactly one 1865 * during the creation and it didn't change during the VOP_LOOKUP 1866 * or VOP_FSYNC. 1867 */ 1868 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1869 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1870 resp->cinfo.atomic = TRUE; 1871 else 1872 resp->cinfo.atomic = FALSE; 1873 1874 /* 1875 * Force modified metadata out to stable storage. 1876 * 1877 * if a underlying vp exists, pass it to VOP_FSYNC 1878 */ 1879 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1880 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1881 else 1882 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1883 1884 if (resp->status != NFS4_OK) { 1885 VN_RELE(vp); 1886 goto out; 1887 } 1888 if (cs->vp) 1889 VN_RELE(cs->vp); 1890 1891 cs->vp = vp; 1892 *cs->statusp = resp->status = NFS4_OK; 1893 out: 1894 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1895 CREATE4res *, resp); 1896 } 1897 1898 /*ARGSUSED*/ 1899 static void 1900 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1901 struct compound_state *cs) 1902 { 1903 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1904 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1905 1906 rfs4_op_inval(argop, resop, req, cs); 1907 1908 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1909 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1910 } 1911 1912 /*ARGSUSED*/ 1913 static void 1914 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1915 struct compound_state *cs) 1916 { 1917 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1918 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1919 rfs4_deleg_state_t *dsp; 1920 nfsstat4 status; 1921 1922 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1923 DELEGRETURN4args *, args); 1924 1925 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1926 resp->status = *cs->statusp = status; 1927 if (status != NFS4_OK) 1928 goto out; 1929 1930 /* Ensure specified filehandle matches */ 1931 if (cs->vp != dsp->rds_finfo->rf_vp) { 1932 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1933 } else 1934 rfs4_return_deleg(dsp, FALSE); 1935 1936 rfs4_update_lease(dsp->rds_client); 1937 1938 rfs4_deleg_state_rele(dsp); 1939 out: 1940 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1941 DELEGRETURN4res *, resp); 1942 } 1943 1944 /* 1945 * Check to see if a given "flavor" is an explicitly shared flavor. 1946 * The assumption of this routine is the "flavor" is already a valid 1947 * flavor in the secinfo list of "exi". 1948 * 1949 * e.g. 1950 * # share -o sec=flavor1 /export 1951 * # share -o sec=flavor2 /export/home 1952 * 1953 * flavor2 is not an explicitly shared flavor for /export, 1954 * however it is in the secinfo list for /export thru the 1955 * server namespace setup. 1956 */ 1957 int 1958 is_exported_sec(int flavor, struct exportinfo *exi) 1959 { 1960 int i; 1961 struct secinfo *sp; 1962 1963 rw_enter(&exported_lock, RW_READER); 1964 sp = exi->exi_export.ex_secinfo; 1965 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1966 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1967 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1968 int ret = SEC_REF_EXPORTED(&sp[i]); 1969 rw_exit(&exported_lock); 1970 return (ret); 1971 } 1972 } 1973 rw_exit(&exported_lock); 1974 1975 /* Should not reach this point based on the assumption */ 1976 return (0); 1977 } 1978 1979 /* 1980 * Check if the security flavor used in the request matches what is 1981 * required at the export point or at the root pseudo node (exi_root). 1982 * 1983 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 1984 * 1985 */ 1986 static int 1987 secinfo_match_or_authnone(struct compound_state *cs) 1988 { 1989 int i; 1990 struct secinfo *sp; 1991 1992 /* 1993 * Check cs->nfsflavor (from the request) against 1994 * the current export data in cs->exi. 1995 */ 1996 rw_enter(&exported_lock, RW_READER); 1997 sp = cs->exi->exi_export.ex_secinfo; 1998 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 1999 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 2000 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 2001 rw_exit(&exported_lock); 2002 return (1); 2003 } 2004 } 2005 rw_exit(&exported_lock); 2006 2007 return (0); 2008 } 2009 2010 /* 2011 * Check the access authority for the client and return the correct error. 2012 */ 2013 nfsstat4 2014 call_checkauth4(struct compound_state *cs, struct svc_req *req) 2015 { 2016 int authres; 2017 2018 /* 2019 * First, check if the security flavor used in the request 2020 * are among the flavors set in the server namespace. 2021 */ 2022 if (!secinfo_match_or_authnone(cs)) { 2023 *cs->statusp = NFS4ERR_WRONGSEC; 2024 return (*cs->statusp); 2025 } 2026 2027 authres = checkauth4(cs, req); 2028 2029 if (authres > 0) { 2030 *cs->statusp = NFS4_OK; 2031 if (! (cs->access & CS_ACCESS_LIMITED)) 2032 cs->access = CS_ACCESS_OK; 2033 } else if (authres == 0) { 2034 *cs->statusp = NFS4ERR_ACCESS; 2035 } else if (authres == -2) { 2036 *cs->statusp = NFS4ERR_WRONGSEC; 2037 } else { 2038 *cs->statusp = NFS4ERR_DELAY; 2039 } 2040 return (*cs->statusp); 2041 } 2042 2043 /* 2044 * bitmap4_to_attrmask is called by getattr and readdir. 2045 * It sets up the vattr mask and determines whether vfsstat call is needed 2046 * based on the input bitmap. 2047 * Returns nfsv4 status. 2048 */ 2049 static nfsstat4 2050 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2051 { 2052 int i; 2053 uint_t va_mask; 2054 struct statvfs64 *sbp = sargp->sbp; 2055 2056 sargp->sbp = NULL; 2057 sargp->flag = 0; 2058 sargp->rdattr_error = NFS4_OK; 2059 sargp->mntdfid_set = FALSE; 2060 if (sargp->cs->vp) 2061 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2062 FH4_ATTRDIR | FH4_NAMEDATTR); 2063 else 2064 sargp->xattr = 0; 2065 2066 /* 2067 * Set rdattr_error_req to true if return error per 2068 * failed entry rather than fail the readdir. 2069 */ 2070 if (breq & FATTR4_RDATTR_ERROR_MASK) 2071 sargp->rdattr_error_req = 1; 2072 else 2073 sargp->rdattr_error_req = 0; 2074 2075 /* 2076 * generate the va_mask 2077 * Handle the easy cases first 2078 */ 2079 switch (breq) { 2080 case NFS4_NTOV_ATTR_MASK: 2081 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2082 return (NFS4_OK); 2083 2084 case NFS4_FS_ATTR_MASK: 2085 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2086 sargp->sbp = sbp; 2087 return (NFS4_OK); 2088 2089 case NFS4_NTOV_ATTR_CACHE_MASK: 2090 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2091 return (NFS4_OK); 2092 2093 case FATTR4_LEASE_TIME_MASK: 2094 sargp->vap->va_mask = 0; 2095 return (NFS4_OK); 2096 2097 default: 2098 va_mask = 0; 2099 for (i = 0; i < nfs4_ntov_map_size; i++) { 2100 if ((breq & nfs4_ntov_map[i].fbit) && 2101 nfs4_ntov_map[i].vbit) 2102 va_mask |= nfs4_ntov_map[i].vbit; 2103 } 2104 2105 /* 2106 * Check is vfsstat is needed 2107 */ 2108 if (breq & NFS4_FS_ATTR_MASK) 2109 sargp->sbp = sbp; 2110 2111 sargp->vap->va_mask = va_mask; 2112 return (NFS4_OK); 2113 } 2114 /* NOTREACHED */ 2115 } 2116 2117 /* 2118 * bitmap4_get_sysattrs is called by getattr and readdir. 2119 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2120 * Returns nfsv4 status. 2121 */ 2122 static nfsstat4 2123 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2124 { 2125 int error; 2126 struct compound_state *cs = sargp->cs; 2127 vnode_t *vp = cs->vp; 2128 2129 if (sargp->sbp != NULL) { 2130 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2131 sargp->sbp = NULL; /* to identify error */ 2132 return (puterrno4(error)); 2133 } 2134 } 2135 2136 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2137 } 2138 2139 static void 2140 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2141 { 2142 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2143 KM_SLEEP); 2144 ntovp->attrcnt = 0; 2145 ntovp->vfsstat = FALSE; 2146 } 2147 2148 static void 2149 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2150 struct nfs4_svgetit_arg *sargp) 2151 { 2152 int i; 2153 union nfs4_attr_u *na; 2154 uint8_t *amap; 2155 2156 /* 2157 * XXX Should do the same checks for whether the bit is set 2158 */ 2159 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2160 i < ntovp->attrcnt; i++, na++, amap++) { 2161 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2162 NFS4ATTR_FREEIT, sargp, na); 2163 } 2164 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2165 /* 2166 * xdr_free for getattr will be done later 2167 */ 2168 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2169 i < ntovp->attrcnt; i++, na++, amap++) { 2170 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2171 } 2172 } 2173 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2174 } 2175 2176 /* 2177 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2178 */ 2179 static nfsstat4 2180 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2181 struct nfs4_svgetit_arg *sargp) 2182 { 2183 int error = 0; 2184 int i, k; 2185 struct nfs4_ntov_table ntov; 2186 XDR xdr; 2187 ulong_t xdr_size; 2188 char *xdr_attrs; 2189 nfsstat4 status = NFS4_OK; 2190 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2191 union nfs4_attr_u *na; 2192 uint8_t *amap; 2193 2194 sargp->op = NFS4ATTR_GETIT; 2195 sargp->flag = 0; 2196 2197 fattrp->attrmask = 0; 2198 /* if no bits requested, then return empty fattr4 */ 2199 if (breq == 0) { 2200 fattrp->attrlist4_len = 0; 2201 fattrp->attrlist4 = NULL; 2202 return (NFS4_OK); 2203 } 2204 2205 /* 2206 * return NFS4ERR_INVAL when client requests write-only attrs 2207 */ 2208 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2209 return (NFS4ERR_INVAL); 2210 2211 nfs4_ntov_table_init(&ntov); 2212 na = ntov.na; 2213 amap = ntov.amap; 2214 2215 /* 2216 * Now loop to get or verify the attrs 2217 */ 2218 for (i = 0; i < nfs4_ntov_map_size; i++) { 2219 if (breq & nfs4_ntov_map[i].fbit) { 2220 if ((*nfs4_ntov_map[i].sv_getit)( 2221 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2222 2223 error = (*nfs4_ntov_map[i].sv_getit)( 2224 NFS4ATTR_GETIT, sargp, na); 2225 2226 /* 2227 * Possible error values: 2228 * >0 if sv_getit failed to 2229 * get the attr; 0 if succeeded; 2230 * <0 if rdattr_error and the 2231 * attribute cannot be returned. 2232 */ 2233 if (error && !(sargp->rdattr_error_req)) 2234 goto done; 2235 /* 2236 * If error then just for entry 2237 */ 2238 if (error == 0) { 2239 fattrp->attrmask |= 2240 nfs4_ntov_map[i].fbit; 2241 *amap++ = 2242 (uint8_t)nfs4_ntov_map[i].nval; 2243 na++; 2244 (ntov.attrcnt)++; 2245 } else if ((error > 0) && 2246 (sargp->rdattr_error == NFS4_OK)) { 2247 sargp->rdattr_error = puterrno4(error); 2248 } 2249 error = 0; 2250 } 2251 } 2252 } 2253 2254 /* 2255 * If rdattr_error was set after the return value for it was assigned, 2256 * update it. 2257 */ 2258 if (prev_rdattr_error != sargp->rdattr_error) { 2259 na = ntov.na; 2260 amap = ntov.amap; 2261 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2262 k = *amap; 2263 if (k < FATTR4_RDATTR_ERROR) { 2264 continue; 2265 } 2266 if ((k == FATTR4_RDATTR_ERROR) && 2267 ((*nfs4_ntov_map[k].sv_getit)( 2268 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2269 2270 (void) (*nfs4_ntov_map[k].sv_getit)( 2271 NFS4ATTR_GETIT, sargp, na); 2272 } 2273 break; 2274 } 2275 } 2276 2277 xdr_size = 0; 2278 na = ntov.na; 2279 amap = ntov.amap; 2280 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2281 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2282 } 2283 2284 fattrp->attrlist4_len = xdr_size; 2285 if (xdr_size) { 2286 /* freed by rfs4_op_getattr_free() */ 2287 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2288 2289 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2290 2291 na = ntov.na; 2292 amap = ntov.amap; 2293 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2294 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2295 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2296 int, *amap); 2297 status = NFS4ERR_SERVERFAULT; 2298 break; 2299 } 2300 } 2301 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2302 } else { 2303 fattrp->attrlist4 = NULL; 2304 } 2305 done: 2306 2307 nfs4_ntov_table_free(&ntov, sargp); 2308 2309 if (error != 0) 2310 status = puterrno4(error); 2311 2312 return (status); 2313 } 2314 2315 /* ARGSUSED */ 2316 static void 2317 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2318 struct compound_state *cs) 2319 { 2320 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2321 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2322 struct nfs4_svgetit_arg sarg; 2323 struct statvfs64 sb; 2324 nfsstat4 status; 2325 2326 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2327 GETATTR4args *, args); 2328 2329 if (cs->vp == NULL) { 2330 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2331 goto out; 2332 } 2333 2334 if (cs->access == CS_ACCESS_DENIED) { 2335 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2336 goto out; 2337 } 2338 2339 sarg.sbp = &sb; 2340 sarg.cs = cs; 2341 sarg.is_referral = B_FALSE; 2342 2343 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2344 if (status == NFS4_OK) { 2345 2346 status = bitmap4_get_sysattrs(&sarg); 2347 if (status == NFS4_OK) { 2348 2349 /* Is this a referral? */ 2350 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2351 /* Older V4 Solaris client sees a link */ 2352 if (client_is_downrev(req)) 2353 sarg.vap->va_type = VLNK; 2354 else 2355 sarg.is_referral = B_TRUE; 2356 } 2357 2358 status = do_rfs4_op_getattr(args->attr_request, 2359 &resp->obj_attributes, &sarg); 2360 } 2361 } 2362 *cs->statusp = resp->status = status; 2363 out: 2364 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2365 GETATTR4res *, resp); 2366 } 2367 2368 static void 2369 rfs4_op_getattr_free(nfs_resop4 *resop) 2370 { 2371 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2372 2373 nfs4_fattr4_free(&resp->obj_attributes); 2374 } 2375 2376 /* ARGSUSED */ 2377 static void 2378 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2379 struct compound_state *cs) 2380 { 2381 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2382 2383 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2384 2385 if (cs->vp == NULL) { 2386 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2387 goto out; 2388 } 2389 if (cs->access == CS_ACCESS_DENIED) { 2390 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2391 goto out; 2392 } 2393 2394 /* check for reparse point at the share point */ 2395 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2396 /* it's all bad */ 2397 cs->exi->exi_moved = 1; 2398 *cs->statusp = resp->status = NFS4ERR_MOVED; 2399 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2400 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2401 return; 2402 } 2403 2404 /* check for reparse point at vp */ 2405 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2406 /* it's not all bad */ 2407 *cs->statusp = resp->status = NFS4ERR_MOVED; 2408 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2409 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2410 return; 2411 } 2412 2413 resp->object.nfs_fh4_val = 2414 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2415 nfs_fh4_copy(&cs->fh, &resp->object); 2416 *cs->statusp = resp->status = NFS4_OK; 2417 out: 2418 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2419 GETFH4res *, resp); 2420 } 2421 2422 static void 2423 rfs4_op_getfh_free(nfs_resop4 *resop) 2424 { 2425 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2426 2427 if (resp->status == NFS4_OK && 2428 resp->object.nfs_fh4_val != NULL) { 2429 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2430 resp->object.nfs_fh4_val = NULL; 2431 resp->object.nfs_fh4_len = 0; 2432 } 2433 } 2434 2435 /* 2436 * illegal: args: void 2437 * res : status (NFS4ERR_OP_ILLEGAL) 2438 */ 2439 /* ARGSUSED */ 2440 static void 2441 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2442 struct svc_req *req, struct compound_state *cs) 2443 { 2444 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2445 2446 resop->resop = OP_ILLEGAL; 2447 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2448 } 2449 2450 /* 2451 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2452 * res: status. If success - CURRENT_FH unchanged, return change_info 2453 */ 2454 /* ARGSUSED */ 2455 static void 2456 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2457 struct compound_state *cs) 2458 { 2459 LINK4args *args = &argop->nfs_argop4_u.oplink; 2460 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2461 int error; 2462 vnode_t *vp; 2463 vnode_t *dvp; 2464 struct vattr bdva, idva, adva; 2465 char *nm; 2466 uint_t len; 2467 struct sockaddr *ca; 2468 char *name = NULL; 2469 nfsstat4 status; 2470 2471 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2472 LINK4args *, args); 2473 2474 /* SAVED_FH: source object */ 2475 vp = cs->saved_vp; 2476 if (vp == NULL) { 2477 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2478 goto out; 2479 } 2480 2481 /* CURRENT_FH: target directory */ 2482 dvp = cs->vp; 2483 if (dvp == NULL) { 2484 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2485 goto out; 2486 } 2487 2488 /* 2489 * If there is a non-shared filesystem mounted on this vnode, 2490 * do not allow to link any file in this directory. 2491 */ 2492 if (vn_ismntpt(dvp)) { 2493 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2494 goto out; 2495 } 2496 2497 if (cs->access == CS_ACCESS_DENIED) { 2498 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2499 goto out; 2500 } 2501 2502 /* Check source object's type validity */ 2503 if (vp->v_type == VDIR) { 2504 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2505 goto out; 2506 } 2507 2508 /* Check target directory's type */ 2509 if (dvp->v_type != VDIR) { 2510 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2511 goto out; 2512 } 2513 2514 if (cs->saved_exi != cs->exi) { 2515 *cs->statusp = resp->status = NFS4ERR_XDEV; 2516 goto out; 2517 } 2518 2519 status = utf8_dir_verify(&args->newname); 2520 if (status != NFS4_OK) { 2521 *cs->statusp = resp->status = status; 2522 goto out; 2523 } 2524 2525 nm = utf8_to_fn(&args->newname, &len, NULL); 2526 if (nm == NULL) { 2527 *cs->statusp = resp->status = NFS4ERR_INVAL; 2528 goto out; 2529 } 2530 2531 if (len > MAXNAMELEN) { 2532 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2533 kmem_free(nm, len); 2534 goto out; 2535 } 2536 2537 if (rdonly4(req, cs)) { 2538 *cs->statusp = resp->status = NFS4ERR_ROFS; 2539 kmem_free(nm, len); 2540 goto out; 2541 } 2542 2543 /* Get "before" change value */ 2544 bdva.va_mask = AT_CTIME|AT_SEQ; 2545 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2546 if (error) { 2547 *cs->statusp = resp->status = puterrno4(error); 2548 kmem_free(nm, len); 2549 goto out; 2550 } 2551 2552 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2553 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2554 MAXPATHLEN + 1); 2555 2556 if (name == NULL) { 2557 *cs->statusp = resp->status = NFS4ERR_INVAL; 2558 kmem_free(nm, len); 2559 goto out; 2560 } 2561 2562 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2563 2564 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2565 2566 if (nm != name) 2567 kmem_free(name, MAXPATHLEN + 1); 2568 kmem_free(nm, len); 2569 2570 /* 2571 * Get the initial "after" sequence number, if it fails, set to zero 2572 */ 2573 idva.va_mask = AT_SEQ; 2574 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2575 idva.va_seq = 0; 2576 2577 /* 2578 * Force modified data and metadata out to stable storage. 2579 */ 2580 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2581 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2582 2583 if (error) { 2584 *cs->statusp = resp->status = puterrno4(error); 2585 goto out; 2586 } 2587 2588 /* 2589 * Get "after" change value, if it fails, simply return the 2590 * before value. 2591 */ 2592 adva.va_mask = AT_CTIME|AT_SEQ; 2593 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2594 adva.va_ctime = bdva.va_ctime; 2595 adva.va_seq = 0; 2596 } 2597 2598 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2599 2600 /* 2601 * The cinfo.atomic = TRUE only if we have 2602 * non-zero va_seq's, and it has incremented by exactly one 2603 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2604 */ 2605 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2606 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2607 resp->cinfo.atomic = TRUE; 2608 else 2609 resp->cinfo.atomic = FALSE; 2610 2611 *cs->statusp = resp->status = NFS4_OK; 2612 out: 2613 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2614 LINK4res *, resp); 2615 } 2616 2617 /* 2618 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2619 */ 2620 2621 /* ARGSUSED */ 2622 static nfsstat4 2623 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) 2624 { 2625 int error; 2626 int different_export = 0; 2627 vnode_t *vp, *pre_tvp = NULL, *oldvp = NULL; 2628 struct exportinfo *exi = NULL, *pre_exi = NULL; 2629 nfsstat4 stat; 2630 fid_t fid; 2631 int attrdir, dotdot, walk; 2632 bool_t is_newvp = FALSE; 2633 2634 if (cs->vp->v_flag & V_XATTRDIR) { 2635 attrdir = 1; 2636 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2637 } else { 2638 attrdir = 0; 2639 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2640 } 2641 2642 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2643 2644 /* 2645 * If dotdotting, then need to check whether it's 2646 * above the root of a filesystem, or above an 2647 * export point. 2648 */ 2649 if (dotdot) { 2650 2651 /* 2652 * If dotdotting at the root of a filesystem, then 2653 * need to traverse back to the mounted-on filesystem 2654 * and do the dotdot lookup there. 2655 */ 2656 if (cs->vp->v_flag & VROOT) { 2657 2658 /* 2659 * If at the system root, then can 2660 * go up no further. 2661 */ 2662 if (VN_CMP(cs->vp, rootdir)) 2663 return (puterrno4(ENOENT)); 2664 2665 /* 2666 * Traverse back to the mounted-on filesystem 2667 */ 2668 cs->vp = untraverse(cs->vp); 2669 2670 /* 2671 * Set the different_export flag so we remember 2672 * to pick up a new exportinfo entry for 2673 * this new filesystem. 2674 */ 2675 different_export = 1; 2676 } else { 2677 2678 /* 2679 * If dotdotting above an export point then set 2680 * the different_export to get new export info. 2681 */ 2682 different_export = nfs_exported(cs->exi, cs->vp); 2683 } 2684 } 2685 2686 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2687 NULL, NULL, NULL); 2688 if (error) 2689 return (puterrno4(error)); 2690 2691 /* 2692 * If the vnode is in a pseudo filesystem, check whether it is visible. 2693 * 2694 * XXX if the vnode is a symlink and it is not visible in 2695 * a pseudo filesystem, return ENOENT (not following symlink). 2696 * V4 client can not mount such symlink. This is a regression 2697 * from V2/V3. 2698 * 2699 * In the same exported filesystem, if the security flavor used 2700 * is not an explicitly shared flavor, limit the view to the visible 2701 * list entries only. This is not a WRONGSEC case because it's already 2702 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2703 */ 2704 if (!different_export && 2705 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2706 cs->access & CS_ACCESS_LIMITED)) { 2707 if (! nfs_visible(cs->exi, vp, &different_export)) { 2708 VN_RELE(vp); 2709 return (puterrno4(ENOENT)); 2710 } 2711 } 2712 2713 /* 2714 * If it's a mountpoint, then traverse it. 2715 */ 2716 if (vn_ismntpt(vp)) { 2717 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2718 pre_tvp = vp; /* save pre-traversed vnode */ 2719 2720 /* 2721 * hold pre_tvp to counteract rele by traverse. We will 2722 * need pre_tvp below if checkexport fails 2723 */ 2724 VN_HOLD(pre_tvp); 2725 if ((error = traverse(&vp)) != 0) { 2726 VN_RELE(vp); 2727 VN_RELE(pre_tvp); 2728 return (puterrno4(error)); 2729 } 2730 different_export = 1; 2731 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2732 /* 2733 * The vfsp comparison is to handle the case where 2734 * a LOFS mount is shared. lo_lookup traverses mount points, 2735 * and NFS is unaware of local fs transistions because 2736 * v_vfsmountedhere isn't set. For this special LOFS case, 2737 * the dir and the obj returned by lookup will have different 2738 * vfs ptrs. 2739 */ 2740 different_export = 1; 2741 } 2742 2743 if (different_export) { 2744 2745 bzero(&fid, sizeof (fid)); 2746 fid.fid_len = MAXFIDSZ; 2747 error = vop_fid_pseudo(vp, &fid); 2748 if (error) { 2749 VN_RELE(vp); 2750 if (pre_tvp) 2751 VN_RELE(pre_tvp); 2752 return (puterrno4(error)); 2753 } 2754 2755 if (dotdot) 2756 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2757 else 2758 exi = checkexport(&vp->v_vfsp->vfs_fsid, &fid, vp); 2759 2760 if (exi == NULL) { 2761 if (pre_tvp) { 2762 /* 2763 * If this vnode is a mounted-on vnode, 2764 * but the mounted-on file system is not 2765 * exported, send back the filehandle for 2766 * the mounted-on vnode, not the root of 2767 * the mounted-on file system. 2768 */ 2769 VN_RELE(vp); 2770 vp = pre_tvp; 2771 exi = pre_exi; 2772 if (exi != NULL) 2773 exi_hold(exi); 2774 } else { 2775 VN_RELE(vp); 2776 return (puterrno4(EACCES)); 2777 } 2778 } else if (pre_tvp) { 2779 /* we're done with pre_tvp now. release extra hold */ 2780 VN_RELE(pre_tvp); 2781 } 2782 2783 if (cs->exi != NULL) 2784 exi_rele(cs->exi); 2785 cs->exi = exi; 2786 2787 /* 2788 * Now we do a checkauth4. The reason is that 2789 * this client/user may not have access to the new 2790 * exported file system, and if he does, 2791 * the client/user may be mapped to a different uid. 2792 * 2793 * We start with a new cr, because the checkauth4 done 2794 * in the PUT*FH operation over wrote the cred's uid, 2795 * gid, etc, and we want the real thing before calling 2796 * checkauth4() 2797 */ 2798 crfree(cs->cr); 2799 cs->cr = crdup(cs->basecr); 2800 2801 oldvp = cs->vp; 2802 cs->vp = vp; 2803 is_newvp = TRUE; 2804 2805 stat = call_checkauth4(cs, req); 2806 if (stat != NFS4_OK) { 2807 VN_RELE(cs->vp); 2808 cs->vp = oldvp; 2809 return (stat); 2810 } 2811 } 2812 2813 /* 2814 * After various NFS checks, do a label check on the path 2815 * component. The label on this path should either be the 2816 * global zone's label or a zone's label. We are only 2817 * interested in the zone's label because exported files 2818 * in global zone is accessible (though read-only) to 2819 * clients. The exportability/visibility check is already 2820 * done before reaching this code. 2821 */ 2822 if (is_system_labeled()) { 2823 bslabel_t *clabel; 2824 2825 ASSERT(req->rq_label != NULL); 2826 clabel = req->rq_label; 2827 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2828 "got client label from request(1)", struct svc_req *, req); 2829 2830 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2831 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2832 cs->exi)) { 2833 error = EACCES; 2834 goto err_out; 2835 } 2836 } else { 2837 /* 2838 * We grant access to admin_low label clients 2839 * only if the client is trusted, i.e. also 2840 * running Solaris Trusted Extension. 2841 */ 2842 struct sockaddr *ca; 2843 int addr_type; 2844 void *ipaddr; 2845 tsol_tpc_t *tp; 2846 2847 ca = (struct sockaddr *)svc_getrpccaller( 2848 req->rq_xprt)->buf; 2849 if (ca->sa_family == AF_INET) { 2850 addr_type = IPV4_VERSION; 2851 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2852 } else if (ca->sa_family == AF_INET6) { 2853 addr_type = IPV6_VERSION; 2854 ipaddr = &((struct sockaddr_in6 *) 2855 ca)->sin6_addr; 2856 } 2857 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2858 if (tp == NULL || tp->tpc_tp.tp_doi != 2859 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2860 SUN_CIPSO) { 2861 if (tp != NULL) 2862 TPC_RELE(tp); 2863 error = EACCES; 2864 goto err_out; 2865 } 2866 TPC_RELE(tp); 2867 } 2868 } 2869 2870 error = makefh4(&cs->fh, vp, cs->exi); 2871 2872 err_out: 2873 if (error) { 2874 if (is_newvp) { 2875 VN_RELE(cs->vp); 2876 cs->vp = oldvp; 2877 } else 2878 VN_RELE(vp); 2879 return (puterrno4(error)); 2880 } 2881 2882 if (!is_newvp) { 2883 if (cs->vp) 2884 VN_RELE(cs->vp); 2885 cs->vp = vp; 2886 } else if (oldvp) 2887 VN_RELE(oldvp); 2888 2889 /* 2890 * if did lookup on attrdir and didn't lookup .., set named 2891 * attr fh flag 2892 */ 2893 if (attrdir && ! dotdot) 2894 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2895 2896 /* Assume false for now, open proc will set this */ 2897 cs->mandlock = FALSE; 2898 2899 return (NFS4_OK); 2900 } 2901 2902 /* ARGSUSED */ 2903 static void 2904 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2905 struct compound_state *cs) 2906 { 2907 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2908 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2909 char *nm; 2910 uint_t len; 2911 struct sockaddr *ca; 2912 char *name = NULL; 2913 nfsstat4 status; 2914 2915 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2916 LOOKUP4args *, args); 2917 2918 if (cs->vp == NULL) { 2919 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2920 goto out; 2921 } 2922 2923 if (cs->vp->v_type == VLNK) { 2924 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2925 goto out; 2926 } 2927 2928 if (cs->vp->v_type != VDIR) { 2929 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2930 goto out; 2931 } 2932 2933 status = utf8_dir_verify(&args->objname); 2934 if (status != NFS4_OK) { 2935 *cs->statusp = resp->status = status; 2936 goto out; 2937 } 2938 2939 nm = utf8_to_str(&args->objname, &len, NULL); 2940 if (nm == NULL) { 2941 *cs->statusp = resp->status = NFS4ERR_INVAL; 2942 goto out; 2943 } 2944 2945 if (len > MAXNAMELEN) { 2946 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2947 kmem_free(nm, len); 2948 goto out; 2949 } 2950 2951 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2952 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2953 MAXPATHLEN + 1); 2954 2955 if (name == NULL) { 2956 *cs->statusp = resp->status = NFS4ERR_INVAL; 2957 kmem_free(nm, len); 2958 goto out; 2959 } 2960 2961 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 2962 2963 if (name != nm) 2964 kmem_free(name, MAXPATHLEN + 1); 2965 kmem_free(nm, len); 2966 2967 out: 2968 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2969 LOOKUP4res *, resp); 2970 } 2971 2972 /* ARGSUSED */ 2973 static void 2974 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2975 struct compound_state *cs) 2976 { 2977 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2978 2979 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2980 2981 if (cs->vp == NULL) { 2982 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2983 goto out; 2984 } 2985 2986 if (cs->vp->v_type != VDIR) { 2987 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2988 goto out; 2989 } 2990 2991 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 2992 2993 /* 2994 * From NFSV4 Specification, LOOKUPP should not check for 2995 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 2996 */ 2997 if (resp->status == NFS4ERR_WRONGSEC) { 2998 *cs->statusp = resp->status = NFS4_OK; 2999 } 3000 3001 out: 3002 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 3003 LOOKUPP4res *, resp); 3004 } 3005 3006 3007 /*ARGSUSED2*/ 3008 static void 3009 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3010 struct compound_state *cs) 3011 { 3012 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 3013 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 3014 vnode_t *avp = NULL; 3015 int lookup_flags = LOOKUP_XATTR, error; 3016 int exp_ro = 0; 3017 3018 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 3019 OPENATTR4args *, args); 3020 3021 if (cs->vp == NULL) { 3022 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3023 goto out; 3024 } 3025 3026 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3027 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3028 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3029 goto out; 3030 } 3031 3032 /* 3033 * If file system supports passing ACE mask to VOP_ACCESS then 3034 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3035 */ 3036 3037 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3038 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3039 V_ACE_MASK, cs->cr, NULL); 3040 else 3041 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3042 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3043 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3044 3045 if (error) { 3046 *cs->statusp = resp->status = puterrno4(EACCES); 3047 goto out; 3048 } 3049 3050 /* 3051 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3052 * the file system is exported read-only -- regardless of 3053 * createdir flag. Otherwise the attrdir would be created 3054 * (assuming server fs isn't mounted readonly locally). If 3055 * VOP_LOOKUP returns ENOENT in this case, the error will 3056 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3057 * because specfs has no VOP_LOOKUP op, so the macro would 3058 * return ENOSYS. EINVAL is returned by all (current) 3059 * Solaris file system implementations when any of their 3060 * restrictions are violated (xattr(dir) can't have xattrdir). 3061 * Returning NOTSUPP is more appropriate in this case 3062 * because the object will never be able to have an attrdir. 3063 */ 3064 if (args->createdir && ! (exp_ro = rdonly4(req, cs))) 3065 lookup_flags |= CREATE_XATTR_DIR; 3066 3067 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3068 NULL, NULL, NULL); 3069 3070 if (error) { 3071 if (error == ENOENT && args->createdir && exp_ro) 3072 *cs->statusp = resp->status = puterrno4(EROFS); 3073 else if (error == EINVAL || error == ENOSYS) 3074 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3075 else 3076 *cs->statusp = resp->status = puterrno4(error); 3077 goto out; 3078 } 3079 3080 ASSERT(avp->v_flag & V_XATTRDIR); 3081 3082 error = makefh4(&cs->fh, avp, cs->exi); 3083 3084 if (error) { 3085 VN_RELE(avp); 3086 *cs->statusp = resp->status = puterrno4(error); 3087 goto out; 3088 } 3089 3090 VN_RELE(cs->vp); 3091 cs->vp = avp; 3092 3093 /* 3094 * There is no requirement for an attrdir fh flag 3095 * because the attrdir has a vnode flag to distinguish 3096 * it from regular (non-xattr) directories. The 3097 * FH4_ATTRDIR flag is set for future sanity checks. 3098 */ 3099 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3100 *cs->statusp = resp->status = NFS4_OK; 3101 3102 out: 3103 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3104 OPENATTR4res *, resp); 3105 } 3106 3107 static int 3108 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3109 caller_context_t *ct) 3110 { 3111 int error; 3112 int i; 3113 clock_t delaytime; 3114 3115 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3116 3117 /* 3118 * Don't block on mandatory locks. If this routine returns 3119 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3120 */ 3121 uio->uio_fmode = FNONBLOCK; 3122 3123 for (i = 0; i < rfs4_maxlock_tries; i++) { 3124 3125 3126 if (direction == FREAD) { 3127 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3128 error = VOP_READ(vp, uio, ioflag, cred, ct); 3129 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3130 } else { 3131 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3132 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3133 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3134 } 3135 3136 if (error != EAGAIN) 3137 break; 3138 3139 if (i < rfs4_maxlock_tries - 1) { 3140 delay(delaytime); 3141 delaytime *= 2; 3142 } 3143 } 3144 3145 return (error); 3146 } 3147 3148 /* ARGSUSED */ 3149 static void 3150 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3151 struct compound_state *cs) 3152 { 3153 READ4args *args = &argop->nfs_argop4_u.opread; 3154 READ4res *resp = &resop->nfs_resop4_u.opread; 3155 int error; 3156 int verror; 3157 vnode_t *vp; 3158 struct vattr va; 3159 struct iovec iov, *iovp = NULL; 3160 int iovcnt; 3161 struct uio uio; 3162 u_offset_t offset; 3163 bool_t *deleg = &cs->deleg; 3164 nfsstat4 stat; 3165 int in_crit = 0; 3166 mblk_t *mp = NULL; 3167 int alloc_err = 0; 3168 int rdma_used = 0; 3169 int loaned_buffers; 3170 caller_context_t ct; 3171 struct uio *uiop; 3172 3173 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3174 READ4args, args); 3175 3176 vp = cs->vp; 3177 if (vp == NULL) { 3178 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3179 goto out; 3180 } 3181 if (cs->access == CS_ACCESS_DENIED) { 3182 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3183 goto out; 3184 } 3185 3186 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3187 deleg, TRUE, &ct)) != NFS4_OK) { 3188 *cs->statusp = resp->status = stat; 3189 goto out; 3190 } 3191 3192 /* 3193 * Enter the critical region before calling VOP_RWLOCK 3194 * to avoid a deadlock with write requests. 3195 */ 3196 if (nbl_need_check(vp)) { 3197 nbl_start_crit(vp, RW_READER); 3198 in_crit = 1; 3199 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3200 &ct)) { 3201 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3202 goto out; 3203 } 3204 } 3205 3206 if (args->wlist) { 3207 if (args->count > clist_len(args->wlist)) { 3208 *cs->statusp = resp->status = NFS4ERR_INVAL; 3209 goto out; 3210 } 3211 rdma_used = 1; 3212 } 3213 3214 /* use loaned buffers for TCP */ 3215 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3216 3217 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3218 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3219 3220 /* 3221 * If we can't get the attributes, then we can't do the 3222 * right access checking. So, we'll fail the request. 3223 */ 3224 if (verror) { 3225 *cs->statusp = resp->status = puterrno4(verror); 3226 goto out; 3227 } 3228 3229 if (vp->v_type != VREG) { 3230 *cs->statusp = resp->status = 3231 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3232 goto out; 3233 } 3234 3235 if (crgetuid(cs->cr) != va.va_uid && 3236 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3237 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3238 *cs->statusp = resp->status = puterrno4(error); 3239 goto out; 3240 } 3241 3242 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3243 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3244 goto out; 3245 } 3246 3247 offset = args->offset; 3248 if (offset >= va.va_size) { 3249 *cs->statusp = resp->status = NFS4_OK; 3250 resp->eof = TRUE; 3251 resp->data_len = 0; 3252 resp->data_val = NULL; 3253 resp->mblk = NULL; 3254 /* RDMA */ 3255 resp->wlist = args->wlist; 3256 resp->wlist_len = resp->data_len; 3257 *cs->statusp = resp->status = NFS4_OK; 3258 if (resp->wlist) 3259 clist_zero_len(resp->wlist); 3260 goto out; 3261 } 3262 3263 if (args->count == 0) { 3264 *cs->statusp = resp->status = NFS4_OK; 3265 resp->eof = FALSE; 3266 resp->data_len = 0; 3267 resp->data_val = NULL; 3268 resp->mblk = NULL; 3269 /* RDMA */ 3270 resp->wlist = args->wlist; 3271 resp->wlist_len = resp->data_len; 3272 if (resp->wlist) 3273 clist_zero_len(resp->wlist); 3274 goto out; 3275 } 3276 3277 /* 3278 * Do not allocate memory more than maximum allowed 3279 * transfer size 3280 */ 3281 if (args->count > rfs4_tsize(req)) 3282 args->count = rfs4_tsize(req); 3283 3284 if (loaned_buffers) { 3285 uiop = (uio_t *)rfs_setup_xuio(vp); 3286 ASSERT(uiop != NULL); 3287 uiop->uio_segflg = UIO_SYSSPACE; 3288 uiop->uio_loffset = args->offset; 3289 uiop->uio_resid = args->count; 3290 3291 /* Jump to do the read if successful */ 3292 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3293 /* 3294 * Need to hold the vnode until after VOP_RETZCBUF() 3295 * is called. 3296 */ 3297 VN_HOLD(vp); 3298 goto doio_read; 3299 } 3300 3301 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3302 uiop->uio_loffset, int, uiop->uio_resid); 3303 3304 uiop->uio_extflg = 0; 3305 3306 /* failure to setup for zero copy */ 3307 rfs_free_xuio((void *)uiop); 3308 loaned_buffers = 0; 3309 } 3310 3311 /* 3312 * If returning data via RDMA Write, then grab the chunk list. If we 3313 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3314 */ 3315 if (rdma_used) { 3316 mp = NULL; 3317 (void) rdma_get_wchunk(req, &iov, args->wlist); 3318 uio.uio_iov = &iov; 3319 uio.uio_iovcnt = 1; 3320 } else { 3321 /* 3322 * mp will contain the data to be sent out in the read reply. 3323 * It will be freed after the reply has been sent. 3324 */ 3325 mp = rfs_read_alloc(args->count, &iovp, &iovcnt); 3326 ASSERT(mp != NULL); 3327 ASSERT(alloc_err == 0); 3328 uio.uio_iov = iovp; 3329 uio.uio_iovcnt = iovcnt; 3330 } 3331 3332 uio.uio_segflg = UIO_SYSSPACE; 3333 uio.uio_extflg = UIO_COPY_CACHED; 3334 uio.uio_loffset = args->offset; 3335 uio.uio_resid = args->count; 3336 uiop = &uio; 3337 3338 doio_read: 3339 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3340 3341 va.va_mask = AT_SIZE; 3342 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3343 3344 if (error) { 3345 if (mp) 3346 freemsg(mp); 3347 *cs->statusp = resp->status = puterrno4(error); 3348 goto out; 3349 } 3350 3351 /* make mblk using zc buffers */ 3352 if (loaned_buffers) { 3353 mp = uio_to_mblk(uiop); 3354 ASSERT(mp != NULL); 3355 } 3356 3357 *cs->statusp = resp->status = NFS4_OK; 3358 3359 ASSERT(uiop->uio_resid >= 0); 3360 resp->data_len = args->count - uiop->uio_resid; 3361 if (mp) { 3362 resp->data_val = (char *)mp->b_datap->db_base; 3363 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3364 } else { 3365 resp->data_val = (caddr_t)iov.iov_base; 3366 } 3367 3368 resp->mblk = mp; 3369 3370 if (!verror && offset + resp->data_len == va.va_size) 3371 resp->eof = TRUE; 3372 else 3373 resp->eof = FALSE; 3374 3375 if (rdma_used) { 3376 if (!rdma_setup_read_data4(args, resp)) { 3377 *cs->statusp = resp->status = NFS4ERR_INVAL; 3378 } 3379 } else { 3380 resp->wlist = NULL; 3381 } 3382 3383 out: 3384 if (in_crit) 3385 nbl_end_crit(vp); 3386 3387 if (iovp != NULL) 3388 kmem_free(iovp, iovcnt * sizeof (struct iovec)); 3389 3390 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3391 READ4res *, resp); 3392 } 3393 3394 static void 3395 rfs4_op_read_free(nfs_resop4 *resop) 3396 { 3397 READ4res *resp = &resop->nfs_resop4_u.opread; 3398 3399 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3400 freemsg(resp->mblk); 3401 resp->mblk = NULL; 3402 resp->data_val = NULL; 3403 resp->data_len = 0; 3404 } 3405 } 3406 3407 static void 3408 rfs4_op_readdir_free(nfs_resop4 * resop) 3409 { 3410 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3411 3412 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3413 freeb(resp->mblk); 3414 resp->mblk = NULL; 3415 resp->data_len = 0; 3416 } 3417 } 3418 3419 3420 /* ARGSUSED */ 3421 static void 3422 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3423 struct compound_state *cs) 3424 { 3425 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3426 int error; 3427 vnode_t *vp; 3428 struct exportinfo *exi, *sav_exi; 3429 nfs_fh4_fmt_t *fh_fmtp; 3430 3431 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3432 3433 if (cs->vp) { 3434 VN_RELE(cs->vp); 3435 cs->vp = NULL; 3436 } 3437 3438 if (cs->cr) 3439 crfree(cs->cr); 3440 3441 cs->cr = crdup(cs->basecr); 3442 3443 rw_enter(&exported_lock, RW_READER); 3444 exi = exi_public; 3445 exi_hold(exi); 3446 rw_exit(&exported_lock); 3447 3448 vp = exi->exi_vp; 3449 if (vp == NULL) { 3450 exi_rele(exi); 3451 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3452 goto out; 3453 } 3454 3455 error = makefh4(&cs->fh, vp, exi); 3456 if (error != 0) { 3457 exi_rele(exi); 3458 *cs->statusp = resp->status = puterrno4(error); 3459 goto out; 3460 } 3461 3462 sav_exi = cs->exi; 3463 cs->exi = exi; 3464 3465 if (cs->exi == exi_root) { 3466 /* 3467 * No filesystem is actually shared public, so we default 3468 * to exi_root. In this case, we must check whether root 3469 * is exported. 3470 */ 3471 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3472 3473 /* 3474 * if root filesystem is exported, the exportinfo struct that we 3475 * should use is what checkexport returns, because exi_root is 3476 * actually a mostly empty struct. 3477 */ 3478 exi = checkexport(&fh_fmtp->fh4_fsid, 3479 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3480 if (exi != NULL) { 3481 exi_rele(cs->exi); 3482 cs->exi = exi; 3483 } 3484 } 3485 3486 if (is_system_labeled()) { 3487 bslabel_t *clabel; 3488 3489 ASSERT(req->rq_label != NULL); 3490 clabel = req->rq_label; 3491 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3492 "got client label from request(1)", 3493 struct svc_req *, req); 3494 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3495 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3496 cs->exi)) { 3497 *cs->statusp = resp->status = 3498 NFS4ERR_SERVERFAULT; 3499 if (sav_exi != NULL) 3500 exi_rele(sav_exi); 3501 goto out; 3502 } 3503 } 3504 } 3505 3506 VN_HOLD(vp); 3507 cs->vp = vp; 3508 3509 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3510 VN_RELE(cs->vp); 3511 cs->vp = NULL; 3512 exi_rele(cs->exi); 3513 cs->exi = sav_exi; 3514 goto out; 3515 } 3516 if (sav_exi != NULL) 3517 exi_rele(sav_exi); 3518 3519 *cs->statusp = resp->status = NFS4_OK; 3520 out: 3521 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3522 PUTPUBFH4res *, resp); 3523 } 3524 3525 /* 3526 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3527 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3528 * or joe have restrictive search permissions, then we shouldn't let 3529 * the client get a file handle. This is easy to enforce. However, we 3530 * don't know what security flavor should be used until we resolve the 3531 * path name. Another complication is uid mapping. If root is 3532 * the user, then it will be mapped to the anonymous user by default, 3533 * but we won't know that till we've resolved the path name. And we won't 3534 * know what the anonymous user is. 3535 * Luckily, SECINFO is specified to take a full filename. 3536 * So what we will have to in rfs4_op_lookup is check that flavor of 3537 * the target object matches that of the request, and if root was the 3538 * caller, check for the root= and anon= options, and if necessary, 3539 * repeat the lookup using the right cred_t. But that's not done yet. 3540 */ 3541 /* ARGSUSED */ 3542 static void 3543 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3544 struct compound_state *cs) 3545 { 3546 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3547 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3548 nfs_fh4_fmt_t *fh_fmtp; 3549 3550 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3551 PUTFH4args *, args); 3552 3553 if (cs->vp) { 3554 VN_RELE(cs->vp); 3555 cs->vp = NULL; 3556 } 3557 3558 if (cs->cr) { 3559 crfree(cs->cr); 3560 cs->cr = NULL; 3561 } 3562 3563 3564 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3565 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3566 goto out; 3567 } 3568 3569 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3570 if (cs->exi != NULL) 3571 exi_rele(cs->exi); 3572 cs->exi = checkexport(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3573 NULL); 3574 3575 if (cs->exi == NULL) { 3576 *cs->statusp = resp->status = NFS4ERR_STALE; 3577 goto out; 3578 } 3579 3580 cs->cr = crdup(cs->basecr); 3581 3582 ASSERT(cs->cr != NULL); 3583 3584 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3585 *cs->statusp = resp->status; 3586 goto out; 3587 } 3588 3589 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3590 VN_RELE(cs->vp); 3591 cs->vp = NULL; 3592 goto out; 3593 } 3594 3595 nfs_fh4_copy(&args->object, &cs->fh); 3596 *cs->statusp = resp->status = NFS4_OK; 3597 cs->deleg = FALSE; 3598 3599 out: 3600 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3601 PUTFH4res *, resp); 3602 } 3603 3604 /* ARGSUSED */ 3605 static void 3606 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3607 struct compound_state *cs) 3608 { 3609 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3610 int error; 3611 fid_t fid; 3612 struct exportinfo *exi, *sav_exi; 3613 3614 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3615 3616 if (cs->vp) { 3617 VN_RELE(cs->vp); 3618 cs->vp = NULL; 3619 } 3620 3621 if (cs->cr) 3622 crfree(cs->cr); 3623 3624 cs->cr = crdup(cs->basecr); 3625 3626 /* 3627 * Using rootdir, the system root vnode, 3628 * get its fid. 3629 */ 3630 bzero(&fid, sizeof (fid)); 3631 fid.fid_len = MAXFIDSZ; 3632 error = vop_fid_pseudo(rootdir, &fid); 3633 if (error != 0) { 3634 *cs->statusp = resp->status = puterrno4(error); 3635 goto out; 3636 } 3637 3638 /* 3639 * Then use the root fsid & fid it to find out if it's exported 3640 * 3641 * If the server root isn't exported directly, then 3642 * it should at least be a pseudo export based on 3643 * one or more exports further down in the server's 3644 * file tree. 3645 */ 3646 exi = checkexport(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3647 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3648 NFS4_DEBUG(rfs4_debug, 3649 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3650 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3651 if (exi != NULL) 3652 exi_rele(exi); 3653 goto out; 3654 } 3655 3656 /* 3657 * Now make a filehandle based on the root 3658 * export and root vnode. 3659 */ 3660 error = makefh4(&cs->fh, rootdir, exi); 3661 if (error != 0) { 3662 *cs->statusp = resp->status = puterrno4(error); 3663 exi_rele(exi); 3664 goto out; 3665 } 3666 3667 sav_exi = cs->exi; 3668 cs->exi = exi; 3669 3670 VN_HOLD(rootdir); 3671 cs->vp = rootdir; 3672 3673 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3674 VN_RELE(rootdir); 3675 cs->vp = NULL; 3676 exi_rele(exi); 3677 cs->exi = sav_exi; 3678 goto out; 3679 } 3680 if (sav_exi != NULL) 3681 exi_rele(sav_exi); 3682 3683 *cs->statusp = resp->status = NFS4_OK; 3684 cs->deleg = FALSE; 3685 out: 3686 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3687 PUTROOTFH4res *, resp); 3688 } 3689 3690 /* 3691 * set_rdattr_params sets up the variables used to manage what information 3692 * to get for each directory entry. 3693 */ 3694 static nfsstat4 3695 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3696 bitmap4 attrs, bool_t *need_to_lookup) 3697 { 3698 uint_t va_mask; 3699 nfsstat4 status; 3700 bitmap4 objbits; 3701 3702 status = bitmap4_to_attrmask(attrs, sargp); 3703 if (status != NFS4_OK) { 3704 /* 3705 * could not even figure attr mask 3706 */ 3707 return (status); 3708 } 3709 va_mask = sargp->vap->va_mask; 3710 3711 /* 3712 * dirent's d_ino is always correct value for mounted_on_fileid. 3713 * mntdfid_set is set once here, but mounted_on_fileid is 3714 * set in main dirent processing loop for each dirent. 3715 * The mntdfid_set is a simple optimization that lets the 3716 * server attr code avoid work when caller is readdir. 3717 */ 3718 sargp->mntdfid_set = TRUE; 3719 3720 /* 3721 * Lookup entry only if client asked for any of the following: 3722 * a) vattr attrs 3723 * b) vfs attrs 3724 * c) attrs w/per-object scope requested (change, filehandle, etc) 3725 * other than mounted_on_fileid (which we can take from dirent) 3726 */ 3727 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3728 3729 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3730 *need_to_lookup = TRUE; 3731 else 3732 *need_to_lookup = FALSE; 3733 3734 if (sargp->sbp == NULL) 3735 return (NFS4_OK); 3736 3737 /* 3738 * If filesystem attrs are requested, get them now from the 3739 * directory vp, as most entries will have same filesystem. The only 3740 * exception are mounted over entries but we handle 3741 * those as we go (XXX mounted over detection not yet implemented). 3742 */ 3743 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3744 status = bitmap4_get_sysattrs(sargp); 3745 sargp->vap->va_mask = va_mask; 3746 3747 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3748 /* 3749 * Failed to get filesystem attributes. 3750 * Return a rdattr_error for each entry, but don't fail. 3751 * However, don't get any obj-dependent attrs. 3752 */ 3753 sargp->rdattr_error = status; /* for rdattr_error */ 3754 *need_to_lookup = FALSE; 3755 /* 3756 * At least get fileid for regular readdir output 3757 */ 3758 sargp->vap->va_mask &= AT_NODEID; 3759 status = NFS4_OK; 3760 } 3761 3762 return (status); 3763 } 3764 3765 /* 3766 * readlink: args: CURRENT_FH. 3767 * res: status. If success - CURRENT_FH unchanged, return linktext. 3768 */ 3769 3770 /* ARGSUSED */ 3771 static void 3772 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3773 struct compound_state *cs) 3774 { 3775 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3776 int error; 3777 vnode_t *vp; 3778 struct iovec iov; 3779 struct vattr va; 3780 struct uio uio; 3781 char *data; 3782 struct sockaddr *ca; 3783 char *name = NULL; 3784 int is_referral; 3785 3786 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3787 3788 /* CURRENT_FH: directory */ 3789 vp = cs->vp; 3790 if (vp == NULL) { 3791 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3792 goto out; 3793 } 3794 3795 if (cs->access == CS_ACCESS_DENIED) { 3796 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3797 goto out; 3798 } 3799 3800 /* Is it a referral? */ 3801 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3802 3803 is_referral = 1; 3804 3805 } else { 3806 3807 is_referral = 0; 3808 3809 if (vp->v_type == VDIR) { 3810 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3811 goto out; 3812 } 3813 3814 if (vp->v_type != VLNK) { 3815 *cs->statusp = resp->status = NFS4ERR_INVAL; 3816 goto out; 3817 } 3818 3819 } 3820 3821 va.va_mask = AT_MODE; 3822 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3823 if (error) { 3824 *cs->statusp = resp->status = puterrno4(error); 3825 goto out; 3826 } 3827 3828 if (MANDLOCK(vp, va.va_mode)) { 3829 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3830 goto out; 3831 } 3832 3833 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3834 3835 if (is_referral) { 3836 char *s; 3837 size_t strsz; 3838 3839 /* Get an artificial symlink based on a referral */ 3840 s = build_symlink(vp, cs->cr, &strsz); 3841 global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++; 3842 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3843 vnode_t *, vp, char *, s); 3844 if (s == NULL) 3845 error = EINVAL; 3846 else { 3847 error = 0; 3848 (void) strlcpy(data, s, MAXPATHLEN + 1); 3849 kmem_free(s, strsz); 3850 } 3851 3852 } else { 3853 3854 iov.iov_base = data; 3855 iov.iov_len = MAXPATHLEN; 3856 uio.uio_iov = &iov; 3857 uio.uio_iovcnt = 1; 3858 uio.uio_segflg = UIO_SYSSPACE; 3859 uio.uio_extflg = UIO_COPY_CACHED; 3860 uio.uio_loffset = 0; 3861 uio.uio_resid = MAXPATHLEN; 3862 3863 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3864 3865 if (!error) 3866 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3867 } 3868 3869 if (error) { 3870 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3871 *cs->statusp = resp->status = puterrno4(error); 3872 goto out; 3873 } 3874 3875 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3876 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3877 MAXPATHLEN + 1); 3878 3879 if (name == NULL) { 3880 /* 3881 * Even though the conversion failed, we return 3882 * something. We just don't translate it. 3883 */ 3884 name = data; 3885 } 3886 3887 /* 3888 * treat link name as data 3889 */ 3890 (void) str_to_utf8(name, (utf8string *)&resp->link); 3891 3892 if (name != data) 3893 kmem_free(name, MAXPATHLEN + 1); 3894 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3895 *cs->statusp = resp->status = NFS4_OK; 3896 3897 out: 3898 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3899 READLINK4res *, resp); 3900 } 3901 3902 static void 3903 rfs4_op_readlink_free(nfs_resop4 *resop) 3904 { 3905 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3906 utf8string *symlink = (utf8string *)&resp->link; 3907 3908 if (symlink->utf8string_val) { 3909 UTF8STRING_FREE(*symlink) 3910 } 3911 } 3912 3913 /* 3914 * release_lockowner: 3915 * Release any state associated with the supplied 3916 * lockowner. Note if any lo_state is holding locks we will not 3917 * rele that lo_state and thus the lockowner will not be destroyed. 3918 * A client using lock after the lock owner stateid has been released 3919 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3920 * to reissue the lock with new_lock_owner set to TRUE. 3921 * args: lock_owner 3922 * res: status 3923 */ 3924 /* ARGSUSED */ 3925 static void 3926 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3927 struct svc_req *req, struct compound_state *cs) 3928 { 3929 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3930 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3931 rfs4_lockowner_t *lo; 3932 rfs4_openowner_t *oo; 3933 rfs4_state_t *sp; 3934 rfs4_lo_state_t *lsp; 3935 rfs4_client_t *cp; 3936 bool_t create = FALSE; 3937 locklist_t *llist; 3938 sysid_t sysid; 3939 3940 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3941 cs, RELEASE_LOCKOWNER4args *, ap); 3942 3943 /* Make sure there is a clientid around for this request */ 3944 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3945 3946 if (cp == NULL) { 3947 *cs->statusp = resp->status = 3948 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3949 goto out; 3950 } 3951 rfs4_client_rele(cp); 3952 3953 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3954 if (lo == NULL) { 3955 *cs->statusp = resp->status = NFS4_OK; 3956 goto out; 3957 } 3958 ASSERT(lo->rl_client != NULL); 3959 3960 /* 3961 * Check for EXPIRED client. If so will reap state with in a lease 3962 * period or on next set_clientid_confirm step 3963 */ 3964 if (rfs4_lease_expired(lo->rl_client)) { 3965 rfs4_lockowner_rele(lo); 3966 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3967 goto out; 3968 } 3969 3970 /* 3971 * If no sysid has been assigned, then no locks exist; just return. 3972 */ 3973 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3974 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 3975 rfs4_lockowner_rele(lo); 3976 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3977 goto out; 3978 } 3979 3980 sysid = lo->rl_client->rc_sysidt; 3981 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3982 3983 /* 3984 * Mark the lockowner invalid. 3985 */ 3986 rfs4_dbe_hide(lo->rl_dbe); 3987 3988 /* 3989 * sysid-pid pair should now not be used since the lockowner is 3990 * invalid. If the client were to instantiate the lockowner again 3991 * it would be assigned a new pid. Thus we can get the list of 3992 * current locks. 3993 */ 3994 3995 llist = flk_get_active_locks(sysid, lo->rl_pid); 3996 /* If we are still holding locks fail */ 3997 if (llist != NULL) { 3998 3999 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 4000 4001 flk_free_locklist(llist); 4002 /* 4003 * We need to unhide the lockowner so the client can 4004 * try it again. The bad thing here is if the client 4005 * has a logic error that took it here in the first place 4006 * he probably has lost accounting of the locks that it 4007 * is holding. So we may have dangling state until the 4008 * open owner state is reaped via close. One scenario 4009 * that could possibly occur is that the client has 4010 * sent the unlock request(s) in separate threads 4011 * and has not waited for the replies before sending the 4012 * RELEASE_LOCKOWNER request. Presumably, it would expect 4013 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 4014 * reissuing the request. 4015 */ 4016 rfs4_dbe_unhide(lo->rl_dbe); 4017 rfs4_lockowner_rele(lo); 4018 goto out; 4019 } 4020 4021 /* 4022 * For the corresponding client we need to check each open 4023 * owner for any opens that have lockowner state associated 4024 * with this lockowner. 4025 */ 4026 4027 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4028 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 4029 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 4030 4031 rfs4_dbe_lock(oo->ro_dbe); 4032 for (sp = list_head(&oo->ro_statelist); sp != NULL; 4033 sp = list_next(&oo->ro_statelist, sp)) { 4034 4035 rfs4_dbe_lock(sp->rs_dbe); 4036 for (lsp = list_head(&sp->rs_lostatelist); 4037 lsp != NULL; 4038 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4039 if (lsp->rls_locker == lo) { 4040 rfs4_dbe_lock(lsp->rls_dbe); 4041 rfs4_dbe_invalidate(lsp->rls_dbe); 4042 rfs4_dbe_unlock(lsp->rls_dbe); 4043 } 4044 } 4045 rfs4_dbe_unlock(sp->rs_dbe); 4046 } 4047 rfs4_dbe_unlock(oo->ro_dbe); 4048 } 4049 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4050 4051 rfs4_lockowner_rele(lo); 4052 4053 *cs->statusp = resp->status = NFS4_OK; 4054 4055 out: 4056 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4057 cs, RELEASE_LOCKOWNER4res *, resp); 4058 } 4059 4060 /* 4061 * short utility function to lookup a file and recall the delegation 4062 */ 4063 static rfs4_file_t * 4064 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4065 int *lkup_error, cred_t *cr) 4066 { 4067 vnode_t *vp; 4068 rfs4_file_t *fp = NULL; 4069 bool_t fcreate = FALSE; 4070 int error; 4071 4072 if (vpp) 4073 *vpp = NULL; 4074 4075 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4076 NULL)) == 0) { 4077 if (vp->v_type == VREG) 4078 fp = rfs4_findfile(vp, NULL, &fcreate); 4079 if (vpp) 4080 *vpp = vp; 4081 else 4082 VN_RELE(vp); 4083 } 4084 4085 if (lkup_error) 4086 *lkup_error = error; 4087 4088 return (fp); 4089 } 4090 4091 /* 4092 * remove: args: CURRENT_FH: directory; name. 4093 * res: status. If success - CURRENT_FH unchanged, return change_info 4094 * for directory. 4095 */ 4096 /* ARGSUSED */ 4097 static void 4098 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4099 struct compound_state *cs) 4100 { 4101 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4102 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4103 int error; 4104 vnode_t *dvp, *vp; 4105 struct vattr bdva, idva, adva; 4106 char *nm; 4107 uint_t len; 4108 rfs4_file_t *fp; 4109 int in_crit = 0; 4110 bslabel_t *clabel; 4111 struct sockaddr *ca; 4112 char *name = NULL; 4113 nfsstat4 status; 4114 4115 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4116 REMOVE4args *, args); 4117 4118 /* CURRENT_FH: directory */ 4119 dvp = cs->vp; 4120 if (dvp == NULL) { 4121 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4122 goto out; 4123 } 4124 4125 if (cs->access == CS_ACCESS_DENIED) { 4126 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4127 goto out; 4128 } 4129 4130 /* 4131 * If there is an unshared filesystem mounted on this vnode, 4132 * Do not allow to remove anything in this directory. 4133 */ 4134 if (vn_ismntpt(dvp)) { 4135 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4136 goto out; 4137 } 4138 4139 if (dvp->v_type != VDIR) { 4140 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4141 goto out; 4142 } 4143 4144 status = utf8_dir_verify(&args->target); 4145 if (status != NFS4_OK) { 4146 *cs->statusp = resp->status = status; 4147 goto out; 4148 } 4149 4150 /* 4151 * Lookup the file so that we can check if it's a directory 4152 */ 4153 nm = utf8_to_fn(&args->target, &len, NULL); 4154 if (nm == NULL) { 4155 *cs->statusp = resp->status = NFS4ERR_INVAL; 4156 goto out; 4157 } 4158 4159 if (len > MAXNAMELEN) { 4160 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4161 kmem_free(nm, len); 4162 goto out; 4163 } 4164 4165 if (rdonly4(req, cs)) { 4166 *cs->statusp = resp->status = NFS4ERR_ROFS; 4167 kmem_free(nm, len); 4168 goto out; 4169 } 4170 4171 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4172 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4173 MAXPATHLEN + 1); 4174 4175 if (name == NULL) { 4176 *cs->statusp = resp->status = NFS4ERR_INVAL; 4177 kmem_free(nm, len); 4178 goto out; 4179 } 4180 4181 /* 4182 * Lookup the file to determine type and while we are see if 4183 * there is a file struct around and check for delegation. 4184 * We don't need to acquire va_seq before this lookup, if 4185 * it causes an update, cinfo.before will not match, which will 4186 * trigger a cache flush even if atomic is TRUE. 4187 */ 4188 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4189 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4190 NULL)) { 4191 VN_RELE(vp); 4192 rfs4_file_rele(fp); 4193 *cs->statusp = resp->status = NFS4ERR_DELAY; 4194 if (nm != name) 4195 kmem_free(name, MAXPATHLEN + 1); 4196 kmem_free(nm, len); 4197 goto out; 4198 } 4199 } 4200 4201 /* Didn't find anything to remove */ 4202 if (vp == NULL) { 4203 *cs->statusp = resp->status = error; 4204 if (nm != name) 4205 kmem_free(name, MAXPATHLEN + 1); 4206 kmem_free(nm, len); 4207 goto out; 4208 } 4209 4210 if (nbl_need_check(vp)) { 4211 nbl_start_crit(vp, RW_READER); 4212 in_crit = 1; 4213 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4214 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4215 if (nm != name) 4216 kmem_free(name, MAXPATHLEN + 1); 4217 kmem_free(nm, len); 4218 nbl_end_crit(vp); 4219 VN_RELE(vp); 4220 if (fp) { 4221 rfs4_clear_dont_grant(fp); 4222 rfs4_file_rele(fp); 4223 } 4224 goto out; 4225 } 4226 } 4227 4228 /* check label before allowing removal */ 4229 if (is_system_labeled()) { 4230 ASSERT(req->rq_label != NULL); 4231 clabel = req->rq_label; 4232 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4233 "got client label from request(1)", 4234 struct svc_req *, req); 4235 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4236 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4237 cs->exi)) { 4238 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4239 if (name != nm) 4240 kmem_free(name, MAXPATHLEN + 1); 4241 kmem_free(nm, len); 4242 if (in_crit) 4243 nbl_end_crit(vp); 4244 VN_RELE(vp); 4245 if (fp) { 4246 rfs4_clear_dont_grant(fp); 4247 rfs4_file_rele(fp); 4248 } 4249 goto out; 4250 } 4251 } 4252 } 4253 4254 /* Get dir "before" change value */ 4255 bdva.va_mask = AT_CTIME|AT_SEQ; 4256 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4257 if (error) { 4258 *cs->statusp = resp->status = puterrno4(error); 4259 if (nm != name) 4260 kmem_free(name, MAXPATHLEN + 1); 4261 kmem_free(nm, len); 4262 if (in_crit) 4263 nbl_end_crit(vp); 4264 VN_RELE(vp); 4265 if (fp) { 4266 rfs4_clear_dont_grant(fp); 4267 rfs4_file_rele(fp); 4268 } 4269 goto out; 4270 } 4271 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4272 4273 /* Actually do the REMOVE operation */ 4274 if (vp->v_type == VDIR) { 4275 /* 4276 * Can't remove a directory that has a mounted-on filesystem. 4277 */ 4278 if (vn_ismntpt(vp)) { 4279 error = EACCES; 4280 } else { 4281 /* 4282 * System V defines rmdir to return EEXIST, 4283 * not ENOTEMPTY, if the directory is not 4284 * empty. A System V NFS server needs to map 4285 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4286 * transmit over the wire. 4287 */ 4288 if ((error = VOP_RMDIR(dvp, name, rootdir, cs->cr, 4289 NULL, 0)) == EEXIST) 4290 error = ENOTEMPTY; 4291 } 4292 4293 if (in_crit) 4294 nbl_end_crit(vp); 4295 VN_RELE(vp); 4296 } else { 4297 if (!in_crit) 4298 VN_RELE(vp); 4299 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4300 fp != NULL) { 4301 struct vattr va; 4302 vnode_t *tvp; 4303 4304 rfs4_dbe_lock(fp->rf_dbe); 4305 tvp = fp->rf_vp; 4306 if (tvp) 4307 VN_HOLD(tvp); 4308 rfs4_dbe_unlock(fp->rf_dbe); 4309 4310 if (tvp) { 4311 /* 4312 * This is va_seq safe because we are not 4313 * manipulating dvp. 4314 */ 4315 va.va_mask = AT_NLINK; 4316 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4317 va.va_nlink == 0) { 4318 /* Remove state on file remove */ 4319 if (in_crit) { 4320 nbl_end_crit(vp); 4321 VN_RELE(vp); 4322 in_crit = 0; 4323 } 4324 rfs4_close_all_state(fp); 4325 } 4326 VN_RELE(tvp); 4327 } 4328 } 4329 4330 if (in_crit) { 4331 nbl_end_crit(vp); 4332 VN_RELE(vp); 4333 } 4334 } 4335 4336 if (fp) { 4337 rfs4_clear_dont_grant(fp); 4338 rfs4_file_rele(fp); 4339 } 4340 if (nm != name) 4341 kmem_free(name, MAXPATHLEN + 1); 4342 kmem_free(nm, len); 4343 4344 if (error) { 4345 *cs->statusp = resp->status = puterrno4(error); 4346 goto out; 4347 } 4348 4349 /* 4350 * Get the initial "after" sequence number, if it fails, set to zero 4351 */ 4352 idva.va_mask = AT_SEQ; 4353 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4354 idva.va_seq = 0; 4355 4356 /* 4357 * Force modified data and metadata out to stable storage. 4358 */ 4359 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4360 4361 /* 4362 * Get "after" change value, if it fails, simply return the 4363 * before value. 4364 */ 4365 adva.va_mask = AT_CTIME|AT_SEQ; 4366 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4367 adva.va_ctime = bdva.va_ctime; 4368 adva.va_seq = 0; 4369 } 4370 4371 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4372 4373 /* 4374 * The cinfo.atomic = TRUE only if we have 4375 * non-zero va_seq's, and it has incremented by exactly one 4376 * during the VOP_REMOVE/RMDIR and it didn't change during 4377 * the VOP_FSYNC. 4378 */ 4379 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4380 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4381 resp->cinfo.atomic = TRUE; 4382 else 4383 resp->cinfo.atomic = FALSE; 4384 4385 *cs->statusp = resp->status = NFS4_OK; 4386 4387 out: 4388 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4389 REMOVE4res *, resp); 4390 } 4391 4392 /* 4393 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4394 * oldname and newname. 4395 * res: status. If success - CURRENT_FH unchanged, return change_info 4396 * for both from and target directories. 4397 */ 4398 /* ARGSUSED */ 4399 static void 4400 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4401 struct compound_state *cs) 4402 { 4403 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4404 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4405 int error; 4406 vnode_t *odvp; 4407 vnode_t *ndvp; 4408 vnode_t *srcvp, *targvp; 4409 struct vattr obdva, oidva, oadva; 4410 struct vattr nbdva, nidva, nadva; 4411 char *onm, *nnm; 4412 uint_t olen, nlen; 4413 rfs4_file_t *fp, *sfp; 4414 int in_crit_src, in_crit_targ; 4415 int fp_rele_grant_hold, sfp_rele_grant_hold; 4416 bslabel_t *clabel; 4417 struct sockaddr *ca; 4418 char *converted_onm = NULL; 4419 char *converted_nnm = NULL; 4420 nfsstat4 status; 4421 4422 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4423 RENAME4args *, args); 4424 4425 fp = sfp = NULL; 4426 srcvp = targvp = NULL; 4427 in_crit_src = in_crit_targ = 0; 4428 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4429 4430 /* CURRENT_FH: target directory */ 4431 ndvp = cs->vp; 4432 if (ndvp == NULL) { 4433 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4434 goto out; 4435 } 4436 4437 /* SAVED_FH: from directory */ 4438 odvp = cs->saved_vp; 4439 if (odvp == NULL) { 4440 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4441 goto out; 4442 } 4443 4444 if (cs->access == CS_ACCESS_DENIED) { 4445 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4446 goto out; 4447 } 4448 4449 /* 4450 * If there is an unshared filesystem mounted on this vnode, 4451 * do not allow to rename objects in this directory. 4452 */ 4453 if (vn_ismntpt(odvp)) { 4454 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4455 goto out; 4456 } 4457 4458 /* 4459 * If there is an unshared filesystem mounted on this vnode, 4460 * do not allow to rename to this directory. 4461 */ 4462 if (vn_ismntpt(ndvp)) { 4463 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4464 goto out; 4465 } 4466 4467 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4468 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4469 goto out; 4470 } 4471 4472 if (cs->saved_exi != cs->exi) { 4473 *cs->statusp = resp->status = NFS4ERR_XDEV; 4474 goto out; 4475 } 4476 4477 status = utf8_dir_verify(&args->oldname); 4478 if (status != NFS4_OK) { 4479 *cs->statusp = resp->status = status; 4480 goto out; 4481 } 4482 4483 status = utf8_dir_verify(&args->newname); 4484 if (status != NFS4_OK) { 4485 *cs->statusp = resp->status = status; 4486 goto out; 4487 } 4488 4489 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4490 if (onm == NULL) { 4491 *cs->statusp = resp->status = NFS4ERR_INVAL; 4492 goto out; 4493 } 4494 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4495 nlen = MAXPATHLEN + 1; 4496 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4497 nlen); 4498 4499 if (converted_onm == NULL) { 4500 *cs->statusp = resp->status = NFS4ERR_INVAL; 4501 kmem_free(onm, olen); 4502 goto out; 4503 } 4504 4505 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4506 if (nnm == NULL) { 4507 *cs->statusp = resp->status = NFS4ERR_INVAL; 4508 if (onm != converted_onm) 4509 kmem_free(converted_onm, MAXPATHLEN + 1); 4510 kmem_free(onm, olen); 4511 goto out; 4512 } 4513 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4514 MAXPATHLEN + 1); 4515 4516 if (converted_nnm == NULL) { 4517 *cs->statusp = resp->status = NFS4ERR_INVAL; 4518 kmem_free(nnm, nlen); 4519 nnm = NULL; 4520 if (onm != converted_onm) 4521 kmem_free(converted_onm, MAXPATHLEN + 1); 4522 kmem_free(onm, olen); 4523 goto out; 4524 } 4525 4526 4527 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4528 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4529 kmem_free(onm, olen); 4530 kmem_free(nnm, nlen); 4531 goto out; 4532 } 4533 4534 4535 if (rdonly4(req, cs)) { 4536 *cs->statusp = resp->status = NFS4ERR_ROFS; 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 /* check label of the target dir */ 4547 if (is_system_labeled()) { 4548 ASSERT(req->rq_label != NULL); 4549 clabel = req->rq_label; 4550 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4551 "got client label from request(1)", 4552 struct svc_req *, req); 4553 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4554 if (!do_rfs_label_check(clabel, ndvp, 4555 EQUALITY_CHECK, cs->exi)) { 4556 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4557 goto err_out; 4558 } 4559 } 4560 } 4561 4562 /* 4563 * Is the source a file and have a delegation? 4564 * We don't need to acquire va_seq before these lookups, if 4565 * it causes an update, cinfo.before will not match, which will 4566 * trigger a cache flush even if atomic is TRUE. 4567 */ 4568 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4569 &error, cs->cr)) { 4570 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4571 NULL)) { 4572 *cs->statusp = resp->status = NFS4ERR_DELAY; 4573 goto err_out; 4574 } 4575 } 4576 4577 if (srcvp == NULL) { 4578 *cs->statusp = resp->status = puterrno4(error); 4579 if (onm != converted_onm) 4580 kmem_free(converted_onm, MAXPATHLEN + 1); 4581 kmem_free(onm, olen); 4582 if (nnm != converted_nnm) 4583 kmem_free(converted_nnm, MAXPATHLEN + 1); 4584 kmem_free(nnm, nlen); 4585 goto out; 4586 } 4587 4588 sfp_rele_grant_hold = 1; 4589 4590 /* Does the destination exist and a file and have a delegation? */ 4591 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4592 NULL, cs->cr)) { 4593 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4594 NULL)) { 4595 *cs->statusp = resp->status = NFS4ERR_DELAY; 4596 goto err_out; 4597 } 4598 } 4599 fp_rele_grant_hold = 1; 4600 4601 4602 /* Check for NBMAND lock on both source and target */ 4603 if (nbl_need_check(srcvp)) { 4604 nbl_start_crit(srcvp, RW_READER); 4605 in_crit_src = 1; 4606 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4607 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4608 goto err_out; 4609 } 4610 } 4611 4612 if (targvp && nbl_need_check(targvp)) { 4613 nbl_start_crit(targvp, RW_READER); 4614 in_crit_targ = 1; 4615 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4616 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4617 goto err_out; 4618 } 4619 } 4620 4621 /* Get source "before" change value */ 4622 obdva.va_mask = AT_CTIME|AT_SEQ; 4623 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4624 if (!error) { 4625 nbdva.va_mask = AT_CTIME|AT_SEQ; 4626 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4627 } 4628 if (error) { 4629 *cs->statusp = resp->status = puterrno4(error); 4630 goto err_out; 4631 } 4632 4633 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4634 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4635 4636 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4637 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4638 struct vattr va; 4639 vnode_t *tvp; 4640 4641 rfs4_dbe_lock(fp->rf_dbe); 4642 tvp = fp->rf_vp; 4643 if (tvp) 4644 VN_HOLD(tvp); 4645 rfs4_dbe_unlock(fp->rf_dbe); 4646 4647 if (tvp) { 4648 va.va_mask = AT_NLINK; 4649 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4650 va.va_nlink == 0) { 4651 /* The file is gone and so should the state */ 4652 if (in_crit_targ) { 4653 nbl_end_crit(targvp); 4654 in_crit_targ = 0; 4655 } 4656 rfs4_close_all_state(fp); 4657 } 4658 VN_RELE(tvp); 4659 } 4660 } 4661 if (error == 0) 4662 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4663 4664 if (in_crit_src) 4665 nbl_end_crit(srcvp); 4666 if (srcvp) 4667 VN_RELE(srcvp); 4668 if (in_crit_targ) 4669 nbl_end_crit(targvp); 4670 if (targvp) 4671 VN_RELE(targvp); 4672 4673 if (sfp) { 4674 rfs4_clear_dont_grant(sfp); 4675 rfs4_file_rele(sfp); 4676 } 4677 if (fp) { 4678 rfs4_clear_dont_grant(fp); 4679 rfs4_file_rele(fp); 4680 } 4681 4682 if (converted_onm != onm) 4683 kmem_free(converted_onm, MAXPATHLEN + 1); 4684 kmem_free(onm, olen); 4685 if (converted_nnm != nnm) 4686 kmem_free(converted_nnm, MAXPATHLEN + 1); 4687 kmem_free(nnm, nlen); 4688 4689 /* 4690 * Get the initial "after" sequence number, if it fails, set to zero 4691 */ 4692 oidva.va_mask = AT_SEQ; 4693 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4694 oidva.va_seq = 0; 4695 4696 nidva.va_mask = AT_SEQ; 4697 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4698 nidva.va_seq = 0; 4699 4700 /* 4701 * Force modified data and metadata out to stable storage. 4702 */ 4703 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4704 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4705 4706 if (error) { 4707 *cs->statusp = resp->status = puterrno4(error); 4708 goto out; 4709 } 4710 4711 /* 4712 * Get "after" change values, if it fails, simply return the 4713 * before value. 4714 */ 4715 oadva.va_mask = AT_CTIME|AT_SEQ; 4716 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4717 oadva.va_ctime = obdva.va_ctime; 4718 oadva.va_seq = 0; 4719 } 4720 4721 nadva.va_mask = AT_CTIME|AT_SEQ; 4722 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4723 nadva.va_ctime = nbdva.va_ctime; 4724 nadva.va_seq = 0; 4725 } 4726 4727 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4728 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4729 4730 /* 4731 * The cinfo.atomic = TRUE only if we have 4732 * non-zero va_seq's, and it has incremented by exactly one 4733 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4734 */ 4735 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4736 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4737 resp->source_cinfo.atomic = TRUE; 4738 else 4739 resp->source_cinfo.atomic = FALSE; 4740 4741 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4742 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4743 resp->target_cinfo.atomic = TRUE; 4744 else 4745 resp->target_cinfo.atomic = FALSE; 4746 4747 #ifdef VOLATILE_FH_TEST 4748 { 4749 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4750 4751 /* 4752 * Add the renamed file handle to the volatile rename list 4753 */ 4754 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4755 /* file handles may expire on rename */ 4756 vnode_t *vp; 4757 4758 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4759 /* 4760 * Already know that nnm will be a valid string 4761 */ 4762 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4763 NULL, NULL, NULL); 4764 kmem_free(nnm, nlen); 4765 if (!error) { 4766 add_volrnm_fh(cs->exi, vp); 4767 VN_RELE(vp); 4768 } 4769 } 4770 } 4771 #endif /* VOLATILE_FH_TEST */ 4772 4773 *cs->statusp = resp->status = NFS4_OK; 4774 out: 4775 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4776 RENAME4res *, resp); 4777 return; 4778 4779 err_out: 4780 if (onm != converted_onm) 4781 kmem_free(converted_onm, MAXPATHLEN + 1); 4782 if (onm != NULL) 4783 kmem_free(onm, olen); 4784 if (nnm != converted_nnm) 4785 kmem_free(converted_nnm, MAXPATHLEN + 1); 4786 if (nnm != NULL) 4787 kmem_free(nnm, nlen); 4788 4789 if (in_crit_src) nbl_end_crit(srcvp); 4790 if (in_crit_targ) nbl_end_crit(targvp); 4791 if (targvp) VN_RELE(targvp); 4792 if (srcvp) VN_RELE(srcvp); 4793 if (sfp) { 4794 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4795 rfs4_file_rele(sfp); 4796 } 4797 if (fp) { 4798 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4799 rfs4_file_rele(fp); 4800 } 4801 4802 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4803 RENAME4res *, resp); 4804 } 4805 4806 /* ARGSUSED */ 4807 static void 4808 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4809 struct compound_state *cs) 4810 { 4811 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4812 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4813 rfs4_client_t *cp; 4814 4815 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4816 RENEW4args *, args); 4817 4818 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4819 *cs->statusp = resp->status = 4820 rfs4_check_clientid(&args->clientid, 0); 4821 goto out; 4822 } 4823 4824 if (rfs4_lease_expired(cp)) { 4825 rfs4_client_rele(cp); 4826 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4827 goto out; 4828 } 4829 4830 rfs4_update_lease(cp); 4831 4832 mutex_enter(cp->rc_cbinfo.cb_lock); 4833 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 4834 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 4835 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4836 } else { 4837 *cs->statusp = resp->status = NFS4_OK; 4838 } 4839 mutex_exit(cp->rc_cbinfo.cb_lock); 4840 4841 rfs4_client_rele(cp); 4842 4843 out: 4844 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4845 RENEW4res *, resp); 4846 } 4847 4848 /* ARGSUSED */ 4849 static void 4850 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4851 struct compound_state *cs) 4852 { 4853 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4854 4855 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4856 4857 /* No need to check cs->access - we are not accessing any object */ 4858 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4859 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4860 goto out; 4861 } 4862 if (cs->vp != NULL) { 4863 VN_RELE(cs->vp); 4864 } 4865 cs->vp = cs->saved_vp; 4866 cs->saved_vp = NULL; 4867 if (cs->exi != NULL) 4868 exi_rele(cs->exi); 4869 cs->exi = cs->saved_exi; 4870 if (cs->exi != NULL) 4871 exi_hold(cs->exi); 4872 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4873 *cs->statusp = resp->status = NFS4_OK; 4874 cs->deleg = FALSE; 4875 4876 out: 4877 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4878 RESTOREFH4res *, resp); 4879 } 4880 4881 /* ARGSUSED */ 4882 static void 4883 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4884 struct compound_state *cs) 4885 { 4886 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4887 4888 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4889 4890 /* No need to check cs->access - we are not accessing any object */ 4891 if (cs->vp == NULL) { 4892 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4893 goto out; 4894 } 4895 if (cs->saved_vp != NULL) { 4896 VN_RELE(cs->saved_vp); 4897 } 4898 cs->saved_vp = cs->vp; 4899 VN_HOLD(cs->saved_vp); 4900 if (cs->saved_exi != NULL) 4901 exi_rele(cs->saved_exi); 4902 cs->saved_exi = cs->exi; 4903 if (cs->saved_exi != NULL) 4904 exi_hold(cs->saved_exi); 4905 /* 4906 * since SAVEFH is fairly rare, don't alloc space for its fh 4907 * unless necessary. 4908 */ 4909 if (cs->saved_fh.nfs_fh4_val == NULL) { 4910 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4911 } 4912 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4913 *cs->statusp = resp->status = NFS4_OK; 4914 4915 out: 4916 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4917 SAVEFH4res *, resp); 4918 } 4919 4920 /* 4921 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4922 * return the bitmap of attrs that were set successfully. It is also 4923 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4924 * always be called only after rfs4_do_set_attrs(). 4925 * 4926 * Verify that the attributes are same as the expected ones. sargp->vap 4927 * and sargp->sbp contain the input attributes as translated from fattr4. 4928 * 4929 * This function verifies only the attrs that correspond to a vattr or 4930 * vfsstat struct. That is because of the extra step needed to get the 4931 * corresponding system structs. Other attributes have already been set or 4932 * verified by do_rfs4_set_attrs. 4933 * 4934 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4935 */ 4936 static int 4937 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4938 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4939 { 4940 int error, ret_error = 0; 4941 int i, k; 4942 uint_t sva_mask = sargp->vap->va_mask; 4943 uint_t vbit; 4944 union nfs4_attr_u *na; 4945 uint8_t *amap; 4946 bool_t getsb = ntovp->vfsstat; 4947 4948 if (sva_mask != 0) { 4949 /* 4950 * Okay to overwrite sargp->vap because we verify based 4951 * on the incoming values. 4952 */ 4953 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4954 sargp->cs->cr, NULL); 4955 if (ret_error) { 4956 if (resp == NULL) 4957 return (ret_error); 4958 /* 4959 * Must return bitmap of successful attrs 4960 */ 4961 sva_mask = 0; /* to prevent checking vap later */ 4962 } else { 4963 /* 4964 * Some file systems clobber va_mask. it is probably 4965 * wrong of them to do so, nonethless we practice 4966 * defensive coding. 4967 * See bug id 4276830. 4968 */ 4969 sargp->vap->va_mask = sva_mask; 4970 } 4971 } 4972 4973 if (getsb) { 4974 /* 4975 * Now get the superblock and loop on the bitmap, as there is 4976 * no simple way of translating from superblock to bitmap4. 4977 */ 4978 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4979 if (ret_error) { 4980 if (resp == NULL) 4981 goto errout; 4982 getsb = FALSE; 4983 } 4984 } 4985 4986 /* 4987 * Now loop and verify each attribute which getattr returned 4988 * whether it's the same as the input. 4989 */ 4990 if (resp == NULL && !getsb && (sva_mask == 0)) 4991 goto errout; 4992 4993 na = ntovp->na; 4994 amap = ntovp->amap; 4995 k = 0; 4996 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4997 k = *amap; 4998 ASSERT(nfs4_ntov_map[k].nval == k); 4999 vbit = nfs4_ntov_map[k].vbit; 5000 5001 /* 5002 * If vattr attribute but VOP_GETATTR failed, or it's 5003 * superblock attribute but VFS_STATVFS failed, skip 5004 */ 5005 if (vbit) { 5006 if ((vbit & sva_mask) == 0) 5007 continue; 5008 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 5009 continue; 5010 } 5011 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 5012 if (resp != NULL) { 5013 if (error) 5014 ret_error = -1; /* not all match */ 5015 else /* update response bitmap */ 5016 *resp |= nfs4_ntov_map[k].fbit; 5017 continue; 5018 } 5019 if (error) { 5020 ret_error = -1; /* not all match */ 5021 break; 5022 } 5023 } 5024 errout: 5025 return (ret_error); 5026 } 5027 5028 /* 5029 * Decode the attribute to be set/verified. If the attr requires a sys op 5030 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 5031 * call the sv_getit function for it, because the sys op hasn't yet been done. 5032 * Return 0 for success, error code if failed. 5033 * 5034 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 5035 */ 5036 static int 5037 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 5038 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 5039 { 5040 int error = 0; 5041 bool_t set_later; 5042 5043 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 5044 5045 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 5046 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 5047 /* 5048 * don't verify yet if a vattr or sb dependent attr, 5049 * because we don't have their sys values yet. 5050 * Will be done later. 5051 */ 5052 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 5053 /* 5054 * ACLs are a special case, since setting the MODE 5055 * conflicts with setting the ACL. We delay setting 5056 * the ACL until all other attributes have been set. 5057 * The ACL gets set in do_rfs4_op_setattr(). 5058 */ 5059 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5060 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5061 sargp, nap); 5062 if (error) { 5063 xdr_free(nfs4_ntov_map[k].xfunc, 5064 (caddr_t)nap); 5065 } 5066 } 5067 } 5068 } else { 5069 #ifdef DEBUG 5070 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5071 "decoding attribute %d\n", k); 5072 #endif 5073 error = EINVAL; 5074 } 5075 if (!error && resp_bval && !set_later) { 5076 *resp_bval |= nfs4_ntov_map[k].fbit; 5077 } 5078 5079 return (error); 5080 } 5081 5082 /* 5083 * Set vattr based on incoming fattr4 attrs - used by setattr. 5084 * Set response mask. Ignore any values that are not writable vattr attrs. 5085 */ 5086 static nfsstat4 5087 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5088 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5089 nfs4_attr_cmd_t cmd) 5090 { 5091 int error = 0; 5092 int i; 5093 char *attrs = fattrp->attrlist4; 5094 uint32_t attrslen = fattrp->attrlist4_len; 5095 XDR xdr; 5096 nfsstat4 status = NFS4_OK; 5097 vnode_t *vp = cs->vp; 5098 union nfs4_attr_u *na; 5099 uint8_t *amap; 5100 5101 #ifndef lint 5102 /* 5103 * Make sure that maximum attribute number can be expressed as an 5104 * 8 bit quantity. 5105 */ 5106 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5107 #endif 5108 5109 if (vp == NULL) { 5110 if (resp) 5111 *resp = 0; 5112 return (NFS4ERR_NOFILEHANDLE); 5113 } 5114 if (cs->access == CS_ACCESS_DENIED) { 5115 if (resp) 5116 *resp = 0; 5117 return (NFS4ERR_ACCESS); 5118 } 5119 5120 sargp->op = cmd; 5121 sargp->cs = cs; 5122 sargp->flag = 0; /* may be set later */ 5123 sargp->vap->va_mask = 0; 5124 sargp->rdattr_error = NFS4_OK; 5125 sargp->rdattr_error_req = FALSE; 5126 /* sargp->sbp is set by the caller */ 5127 5128 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5129 5130 na = ntovp->na; 5131 amap = ntovp->amap; 5132 5133 /* 5134 * The following loop iterates on the nfs4_ntov_map checking 5135 * if the fbit is set in the requested bitmap. 5136 * If set then we process the arguments using the 5137 * rfs4_fattr4 conversion functions to populate the setattr 5138 * vattr and va_mask. Any settable attrs that are not using vattr 5139 * will be set in this loop. 5140 */ 5141 for (i = 0; i < nfs4_ntov_map_size; i++) { 5142 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5143 continue; 5144 } 5145 /* 5146 * If setattr, must be a writable attr. 5147 * If verify/nverify, must be a readable attr. 5148 */ 5149 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5150 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5151 /* 5152 * Client tries to set/verify an 5153 * unsupported attribute, tries to set 5154 * a read only attr or verify a write 5155 * only one - error! 5156 */ 5157 break; 5158 } 5159 /* 5160 * Decode the attribute to set/verify 5161 */ 5162 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5163 &xdr, resp ? resp : NULL, na); 5164 if (error) 5165 break; 5166 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5167 na++; 5168 (ntovp->attrcnt)++; 5169 if (nfs4_ntov_map[i].vfsstat) 5170 ntovp->vfsstat = TRUE; 5171 } 5172 5173 if (error != 0) 5174 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5175 puterrno4(error)); 5176 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5177 return (status); 5178 } 5179 5180 static nfsstat4 5181 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5182 stateid4 *stateid) 5183 { 5184 int error = 0; 5185 struct nfs4_svgetit_arg sarg; 5186 bool_t trunc; 5187 5188 nfsstat4 status = NFS4_OK; 5189 cred_t *cr = cs->cr; 5190 vnode_t *vp = cs->vp; 5191 struct nfs4_ntov_table ntov; 5192 struct statvfs64 sb; 5193 struct vattr bva; 5194 struct flock64 bf; 5195 int in_crit = 0; 5196 uint_t saved_mask = 0; 5197 caller_context_t ct; 5198 5199 *resp = 0; 5200 sarg.sbp = &sb; 5201 sarg.is_referral = B_FALSE; 5202 nfs4_ntov_table_init(&ntov); 5203 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5204 NFS4ATTR_SETIT); 5205 if (status != NFS4_OK) { 5206 /* 5207 * failed set attrs 5208 */ 5209 goto done; 5210 } 5211 if ((sarg.vap->va_mask == 0) && 5212 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5213 /* 5214 * no further work to be done 5215 */ 5216 goto done; 5217 } 5218 5219 /* 5220 * If we got a request to set the ACL and the MODE, only 5221 * allow changing VSUID, VSGID, and VSVTX. Attempting 5222 * to change any other bits, along with setting an ACL, 5223 * gives NFS4ERR_INVAL. 5224 */ 5225 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5226 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5227 vattr_t va; 5228 5229 va.va_mask = AT_MODE; 5230 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5231 if (error) { 5232 status = puterrno4(error); 5233 goto done; 5234 } 5235 if ((sarg.vap->va_mode ^ va.va_mode) & 5236 ~(VSUID | VSGID | VSVTX)) { 5237 status = NFS4ERR_INVAL; 5238 goto done; 5239 } 5240 } 5241 5242 /* Check stateid only if size has been set */ 5243 if (sarg.vap->va_mask & AT_SIZE) { 5244 trunc = (sarg.vap->va_size == 0); 5245 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5246 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5247 if (status != NFS4_OK) 5248 goto done; 5249 } else { 5250 ct.cc_sysid = 0; 5251 ct.cc_pid = 0; 5252 ct.cc_caller_id = nfs4_srv_caller_id; 5253 ct.cc_flags = CC_DONTBLOCK; 5254 } 5255 5256 /* XXX start of possible race with delegations */ 5257 5258 /* 5259 * We need to specially handle size changes because it is 5260 * possible for the client to create a file with read-only 5261 * modes, but with the file opened for writing. If the client 5262 * then tries to set the file size, e.g. ftruncate(3C), 5263 * fcntl(F_FREESP), the normal access checking done in 5264 * VOP_SETATTR would prevent the client from doing it even though 5265 * it should be allowed to do so. To get around this, we do the 5266 * access checking for ourselves and use VOP_SPACE which doesn't 5267 * do the access checking. 5268 * Also the client should not be allowed to change the file 5269 * size if there is a conflicting non-blocking mandatory lock in 5270 * the region of the change. 5271 */ 5272 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5273 u_offset_t offset; 5274 ssize_t length; 5275 5276 /* 5277 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5278 * before returning, sarg.vap->va_mask is used to 5279 * generate the setattr reply bitmap. We also clear 5280 * AT_SIZE below before calling VOP_SPACE. For both 5281 * of these cases, the va_mask needs to be saved here 5282 * and restored after calling VOP_SETATTR. 5283 */ 5284 saved_mask = sarg.vap->va_mask; 5285 5286 /* 5287 * Check any possible conflict due to NBMAND locks. 5288 * Get into critical region before VOP_GETATTR, so the 5289 * size attribute is valid when checking conflicts. 5290 */ 5291 if (nbl_need_check(vp)) { 5292 nbl_start_crit(vp, RW_READER); 5293 in_crit = 1; 5294 } 5295 5296 bva.va_mask = AT_UID|AT_SIZE; 5297 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5298 status = puterrno4(error); 5299 goto done; 5300 } 5301 5302 if (in_crit) { 5303 if (sarg.vap->va_size < bva.va_size) { 5304 offset = sarg.vap->va_size; 5305 length = bva.va_size - sarg.vap->va_size; 5306 } else { 5307 offset = bva.va_size; 5308 length = sarg.vap->va_size - bva.va_size; 5309 } 5310 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5311 &ct)) { 5312 status = NFS4ERR_LOCKED; 5313 goto done; 5314 } 5315 } 5316 5317 if (crgetuid(cr) == bva.va_uid) { 5318 sarg.vap->va_mask &= ~AT_SIZE; 5319 bf.l_type = F_WRLCK; 5320 bf.l_whence = 0; 5321 bf.l_start = (off64_t)sarg.vap->va_size; 5322 bf.l_len = 0; 5323 bf.l_sysid = 0; 5324 bf.l_pid = 0; 5325 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5326 (offset_t)sarg.vap->va_size, cr, &ct); 5327 } 5328 } 5329 5330 if (!error && sarg.vap->va_mask != 0) 5331 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5332 5333 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5334 if (saved_mask & AT_SIZE) 5335 sarg.vap->va_mask |= AT_SIZE; 5336 5337 /* 5338 * If an ACL was being set, it has been delayed until now, 5339 * in order to set the mode (via the VOP_SETATTR() above) first. 5340 */ 5341 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5342 int i; 5343 5344 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5345 if (ntov.amap[i] == FATTR4_ACL) 5346 break; 5347 if (i < NFS4_MAXNUM_ATTRS) { 5348 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5349 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5350 if (error == 0) { 5351 *resp |= FATTR4_ACL_MASK; 5352 } else if (error == ENOTSUP) { 5353 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5354 status = NFS4ERR_ATTRNOTSUPP; 5355 goto done; 5356 } 5357 } else { 5358 NFS4_DEBUG(rfs4_debug, 5359 (CE_NOTE, "do_rfs4_op_setattr: " 5360 "unable to find ACL in fattr4")); 5361 error = EINVAL; 5362 } 5363 } 5364 5365 if (error) { 5366 /* check if a monitor detected a delegation conflict */ 5367 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5368 status = NFS4ERR_DELAY; 5369 else 5370 status = puterrno4(error); 5371 5372 /* 5373 * Set the response bitmap when setattr failed. 5374 * If VOP_SETATTR partially succeeded, test by doing a 5375 * VOP_GETATTR on the object and comparing the data 5376 * to the setattr arguments. 5377 */ 5378 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5379 } else { 5380 /* 5381 * Force modified metadata out to stable storage. 5382 */ 5383 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5384 /* 5385 * Set response bitmap 5386 */ 5387 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5388 } 5389 5390 /* Return early and already have a NFSv4 error */ 5391 done: 5392 /* 5393 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5394 * conversion sets both readable and writeable NFS4 attrs 5395 * for AT_MTIME and AT_ATIME. The line below masks out 5396 * unrequested attrs from the setattr result bitmap. This 5397 * is placed after the done: label to catch the ATTRNOTSUP 5398 * case. 5399 */ 5400 *resp &= fattrp->attrmask; 5401 5402 if (in_crit) 5403 nbl_end_crit(vp); 5404 5405 nfs4_ntov_table_free(&ntov, &sarg); 5406 5407 return (status); 5408 } 5409 5410 /* ARGSUSED */ 5411 static void 5412 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5413 struct compound_state *cs) 5414 { 5415 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5416 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5417 bslabel_t *clabel; 5418 5419 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5420 SETATTR4args *, args); 5421 5422 if (cs->vp == NULL) { 5423 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5424 goto out; 5425 } 5426 5427 /* 5428 * If there is an unshared filesystem mounted on this vnode, 5429 * do not allow to setattr on this vnode. 5430 */ 5431 if (vn_ismntpt(cs->vp)) { 5432 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5433 goto out; 5434 } 5435 5436 resp->attrsset = 0; 5437 5438 if (rdonly4(req, cs)) { 5439 *cs->statusp = resp->status = NFS4ERR_ROFS; 5440 goto out; 5441 } 5442 5443 /* check label before setting attributes */ 5444 if (is_system_labeled()) { 5445 ASSERT(req->rq_label != NULL); 5446 clabel = req->rq_label; 5447 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5448 "got client label from request(1)", 5449 struct svc_req *, req); 5450 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5451 if (!do_rfs_label_check(clabel, cs->vp, 5452 EQUALITY_CHECK, cs->exi)) { 5453 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5454 goto out; 5455 } 5456 } 5457 } 5458 5459 *cs->statusp = resp->status = 5460 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5461 &args->stateid); 5462 5463 out: 5464 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5465 SETATTR4res *, resp); 5466 } 5467 5468 /* ARGSUSED */ 5469 static void 5470 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5471 struct compound_state *cs) 5472 { 5473 /* 5474 * verify and nverify are exactly the same, except that nverify 5475 * succeeds when some argument changed, and verify succeeds when 5476 * when none changed. 5477 */ 5478 5479 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5480 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5481 5482 int error; 5483 struct nfs4_svgetit_arg sarg; 5484 struct statvfs64 sb; 5485 struct nfs4_ntov_table ntov; 5486 5487 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5488 VERIFY4args *, args); 5489 5490 if (cs->vp == NULL) { 5491 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5492 goto out; 5493 } 5494 5495 sarg.sbp = &sb; 5496 sarg.is_referral = B_FALSE; 5497 nfs4_ntov_table_init(&ntov); 5498 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5499 &sarg, &ntov, NFS4ATTR_VERIT); 5500 if (resp->status != NFS4_OK) { 5501 /* 5502 * do_rfs4_set_attrs will try to verify systemwide attrs, 5503 * so could return -1 for "no match". 5504 */ 5505 if (resp->status == -1) 5506 resp->status = NFS4ERR_NOT_SAME; 5507 goto done; 5508 } 5509 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5510 switch (error) { 5511 case 0: 5512 resp->status = NFS4_OK; 5513 break; 5514 case -1: 5515 resp->status = NFS4ERR_NOT_SAME; 5516 break; 5517 default: 5518 resp->status = puterrno4(error); 5519 break; 5520 } 5521 done: 5522 *cs->statusp = resp->status; 5523 nfs4_ntov_table_free(&ntov, &sarg); 5524 out: 5525 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5526 VERIFY4res *, resp); 5527 } 5528 5529 /* ARGSUSED */ 5530 static void 5531 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5532 struct compound_state *cs) 5533 { 5534 /* 5535 * verify and nverify are exactly the same, except that nverify 5536 * succeeds when some argument changed, and verify succeeds when 5537 * when none changed. 5538 */ 5539 5540 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5541 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5542 5543 int error; 5544 struct nfs4_svgetit_arg sarg; 5545 struct statvfs64 sb; 5546 struct nfs4_ntov_table ntov; 5547 5548 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5549 NVERIFY4args *, args); 5550 5551 if (cs->vp == NULL) { 5552 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5553 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5554 NVERIFY4res *, resp); 5555 return; 5556 } 5557 sarg.sbp = &sb; 5558 sarg.is_referral = B_FALSE; 5559 nfs4_ntov_table_init(&ntov); 5560 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5561 &sarg, &ntov, NFS4ATTR_VERIT); 5562 if (resp->status != NFS4_OK) { 5563 /* 5564 * do_rfs4_set_attrs will try to verify systemwide attrs, 5565 * so could return -1 for "no match". 5566 */ 5567 if (resp->status == -1) 5568 resp->status = NFS4_OK; 5569 goto done; 5570 } 5571 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5572 switch (error) { 5573 case 0: 5574 resp->status = NFS4ERR_SAME; 5575 break; 5576 case -1: 5577 resp->status = NFS4_OK; 5578 break; 5579 default: 5580 resp->status = puterrno4(error); 5581 break; 5582 } 5583 done: 5584 *cs->statusp = resp->status; 5585 nfs4_ntov_table_free(&ntov, &sarg); 5586 5587 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5588 NVERIFY4res *, resp); 5589 } 5590 5591 /* 5592 * XXX - This should live in an NFS header file. 5593 */ 5594 #define MAX_IOVECS 12 5595 5596 /* ARGSUSED */ 5597 static void 5598 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5599 struct compound_state *cs) 5600 { 5601 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5602 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5603 int error; 5604 vnode_t *vp; 5605 struct vattr bva; 5606 u_offset_t rlimit; 5607 struct uio uio; 5608 struct iovec iov[MAX_IOVECS]; 5609 struct iovec *iovp; 5610 int iovcnt; 5611 int ioflag; 5612 cred_t *savecred, *cr; 5613 bool_t *deleg = &cs->deleg; 5614 nfsstat4 stat; 5615 int in_crit = 0; 5616 caller_context_t ct; 5617 5618 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5619 WRITE4args *, args); 5620 5621 vp = cs->vp; 5622 if (vp == NULL) { 5623 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5624 goto out; 5625 } 5626 if (cs->access == CS_ACCESS_DENIED) { 5627 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5628 goto out; 5629 } 5630 5631 cr = cs->cr; 5632 5633 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5634 deleg, TRUE, &ct)) != NFS4_OK) { 5635 *cs->statusp = resp->status = stat; 5636 goto out; 5637 } 5638 5639 /* 5640 * We have to enter the critical region before calling VOP_RWLOCK 5641 * to avoid a deadlock with ufs. 5642 */ 5643 if (nbl_need_check(vp)) { 5644 nbl_start_crit(vp, RW_READER); 5645 in_crit = 1; 5646 if (nbl_conflict(vp, NBL_WRITE, 5647 args->offset, args->data_len, 0, &ct)) { 5648 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5649 goto out; 5650 } 5651 } 5652 5653 bva.va_mask = AT_MODE | AT_UID; 5654 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5655 5656 /* 5657 * If we can't get the attributes, then we can't do the 5658 * right access checking. So, we'll fail the request. 5659 */ 5660 if (error) { 5661 *cs->statusp = resp->status = puterrno4(error); 5662 goto out; 5663 } 5664 5665 if (rdonly4(req, cs)) { 5666 *cs->statusp = resp->status = NFS4ERR_ROFS; 5667 goto out; 5668 } 5669 5670 if (vp->v_type != VREG) { 5671 *cs->statusp = resp->status = 5672 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5673 goto out; 5674 } 5675 5676 if (crgetuid(cr) != bva.va_uid && 5677 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5678 *cs->statusp = resp->status = puterrno4(error); 5679 goto out; 5680 } 5681 5682 if (MANDLOCK(vp, bva.va_mode)) { 5683 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5684 goto out; 5685 } 5686 5687 if (args->data_len == 0) { 5688 *cs->statusp = resp->status = NFS4_OK; 5689 resp->count = 0; 5690 resp->committed = args->stable; 5691 resp->writeverf = Write4verf; 5692 goto out; 5693 } 5694 5695 if (args->mblk != NULL) { 5696 mblk_t *m; 5697 uint_t bytes, round_len; 5698 5699 iovcnt = 0; 5700 bytes = 0; 5701 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5702 for (m = args->mblk; 5703 m != NULL && bytes < round_len; 5704 m = m->b_cont) { 5705 iovcnt++; 5706 bytes += MBLKL(m); 5707 } 5708 #ifdef DEBUG 5709 /* should have ended on an mblk boundary */ 5710 if (bytes != round_len) { 5711 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5712 bytes, round_len, args->data_len); 5713 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5714 (void *)args->mblk, (void *)m); 5715 ASSERT(bytes == round_len); 5716 } 5717 #endif 5718 if (iovcnt <= MAX_IOVECS) { 5719 iovp = iov; 5720 } else { 5721 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5722 } 5723 mblk_to_iov(args->mblk, iovcnt, iovp); 5724 } else if (args->rlist != NULL) { 5725 iovcnt = 1; 5726 iovp = iov; 5727 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5728 iovp->iov_len = args->data_len; 5729 } else { 5730 iovcnt = 1; 5731 iovp = iov; 5732 iovp->iov_base = args->data_val; 5733 iovp->iov_len = args->data_len; 5734 } 5735 5736 uio.uio_iov = iovp; 5737 uio.uio_iovcnt = iovcnt; 5738 5739 uio.uio_segflg = UIO_SYSSPACE; 5740 uio.uio_extflg = UIO_COPY_DEFAULT; 5741 uio.uio_loffset = args->offset; 5742 uio.uio_resid = args->data_len; 5743 uio.uio_llimit = curproc->p_fsz_ctl; 5744 rlimit = uio.uio_llimit - args->offset; 5745 if (rlimit < (u_offset_t)uio.uio_resid) 5746 uio.uio_resid = (int)rlimit; 5747 5748 if (args->stable == UNSTABLE4) 5749 ioflag = 0; 5750 else if (args->stable == FILE_SYNC4) 5751 ioflag = FSYNC; 5752 else if (args->stable == DATA_SYNC4) 5753 ioflag = FDSYNC; 5754 else { 5755 if (iovp != iov) 5756 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5757 *cs->statusp = resp->status = NFS4ERR_INVAL; 5758 goto out; 5759 } 5760 5761 /* 5762 * We're changing creds because VM may fault and we need 5763 * the cred of the current thread to be used if quota 5764 * checking is enabled. 5765 */ 5766 savecred = curthread->t_cred; 5767 curthread->t_cred = cr; 5768 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5769 curthread->t_cred = savecred; 5770 5771 if (iovp != iov) 5772 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5773 5774 if (error) { 5775 *cs->statusp = resp->status = puterrno4(error); 5776 goto out; 5777 } 5778 5779 *cs->statusp = resp->status = NFS4_OK; 5780 resp->count = args->data_len - uio.uio_resid; 5781 5782 if (ioflag == 0) 5783 resp->committed = UNSTABLE4; 5784 else 5785 resp->committed = FILE_SYNC4; 5786 5787 resp->writeverf = Write4verf; 5788 5789 out: 5790 if (in_crit) 5791 nbl_end_crit(vp); 5792 5793 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5794 WRITE4res *, resp); 5795 } 5796 5797 5798 /* XXX put in a header file */ 5799 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5800 5801 void 5802 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5803 struct svc_req *req, cred_t *cr, int *rv) 5804 { 5805 uint_t i; 5806 struct compound_state cs; 5807 5808 if (rv != NULL) 5809 *rv = 0; 5810 rfs4_init_compound_state(&cs); 5811 /* 5812 * Form a reply tag by copying over the reqeuest tag. 5813 */ 5814 resp->tag.utf8string_val = 5815 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5816 resp->tag.utf8string_len = args->tag.utf8string_len; 5817 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5818 resp->tag.utf8string_len); 5819 5820 cs.statusp = &resp->status; 5821 cs.req = req; 5822 resp->array = NULL; 5823 resp->array_len = 0; 5824 5825 /* 5826 * XXX for now, minorversion should be zero 5827 */ 5828 if (args->minorversion != NFS4_MINORVERSION) { 5829 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5830 &cs, COMPOUND4args *, args); 5831 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5832 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5833 &cs, COMPOUND4res *, resp); 5834 return; 5835 } 5836 5837 if (args->array_len == 0) { 5838 resp->status = NFS4_OK; 5839 return; 5840 } 5841 5842 ASSERT(exi == NULL); 5843 ASSERT(cr == NULL); 5844 5845 cr = crget(); 5846 ASSERT(cr != NULL); 5847 5848 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5849 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5850 &cs, COMPOUND4args *, args); 5851 crfree(cr); 5852 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5853 &cs, COMPOUND4res *, resp); 5854 svcerr_badcred(req->rq_xprt); 5855 if (rv != NULL) 5856 *rv = 1; 5857 return; 5858 } 5859 resp->array_len = args->array_len; 5860 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5861 KM_SLEEP); 5862 5863 cs.basecr = cr; 5864 5865 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5866 COMPOUND4args *, args); 5867 5868 /* 5869 * If this is the first compound we've seen, we need to start all 5870 * new instances' grace periods. 5871 */ 5872 if (rfs4_seen_first_compound == 0) { 5873 rfs4_grace_start_new(); 5874 /* 5875 * This must be set after rfs4_grace_start_new(), otherwise 5876 * another thread could proceed past here before the former 5877 * is finished. 5878 */ 5879 rfs4_seen_first_compound = 1; 5880 } 5881 5882 for (i = 0; i < args->array_len && cs.cont; i++) { 5883 nfs_argop4 *argop; 5884 nfs_resop4 *resop; 5885 uint_t op; 5886 5887 argop = &args->array[i]; 5888 resop = &resp->array[i]; 5889 resop->resop = argop->argop; 5890 op = (uint_t)resop->resop; 5891 5892 if (op < rfsv4disp_cnt) { 5893 /* 5894 * Count the individual ops here; NULL and COMPOUND 5895 * are counted in common_dispatch() 5896 */ 5897 rfsproccnt_v4_ptr[op].value.ui64++; 5898 5899 NFS4_DEBUG(rfs4_debug > 1, 5900 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5901 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5902 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5903 rfs4_op_string[op], *cs.statusp)); 5904 if (*cs.statusp != NFS4_OK) 5905 cs.cont = FALSE; 5906 } else { 5907 /* 5908 * This is effectively dead code since XDR code 5909 * will have already returned BADXDR if op doesn't 5910 * decode to legal value. This only done for a 5911 * day when XDR code doesn't verify v4 opcodes. 5912 */ 5913 op = OP_ILLEGAL; 5914 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5915 5916 rfs4_op_illegal(argop, resop, req, &cs); 5917 cs.cont = FALSE; 5918 } 5919 5920 /* 5921 * If not at last op, and if we are to stop, then 5922 * compact the results array. 5923 */ 5924 if ((i + 1) < args->array_len && !cs.cont) { 5925 nfs_resop4 *new_res = kmem_alloc( 5926 (i+1) * sizeof (nfs_resop4), KM_SLEEP); 5927 bcopy(resp->array, 5928 new_res, (i+1) * sizeof (nfs_resop4)); 5929 kmem_free(resp->array, 5930 args->array_len * sizeof (nfs_resop4)); 5931 5932 resp->array_len = i + 1; 5933 resp->array = new_res; 5934 } 5935 } 5936 5937 5938 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5939 COMPOUND4res *, resp); 5940 5941 if (cs.exi != NULL) 5942 exi_rele(cs.exi); 5943 if (cs.saved_exi != NULL) 5944 exi_rele(cs.saved_exi); 5945 if (cs.vp != NULL) 5946 VN_RELE(cs.vp); 5947 if (cs.saved_vp != NULL) 5948 VN_RELE(cs.saved_vp); 5949 if (cs.saved_fh.nfs_fh4_val != NULL) 5950 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 5951 5952 if (cs.basecr) 5953 crfree(cs.basecr); 5954 if (cs.cr) 5955 crfree(cs.cr); 5956 /* 5957 * done with this compound request, free the label 5958 */ 5959 5960 if (req->rq_label != NULL) { 5961 kmem_free(req->rq_label, sizeof (bslabel_t)); 5962 req->rq_label = NULL; 5963 } 5964 } 5965 5966 /* 5967 * XXX because of what appears to be duplicate calls to rfs4_compound_free 5968 * XXX zero out the tag and array values. Need to investigate why the 5969 * XXX calls occur, but at least prevent the panic for now. 5970 */ 5971 void 5972 rfs4_compound_free(COMPOUND4res *resp) 5973 { 5974 uint_t i; 5975 5976 if (resp->tag.utf8string_val) { 5977 UTF8STRING_FREE(resp->tag) 5978 } 5979 5980 for (i = 0; i < resp->array_len; i++) { 5981 nfs_resop4 *resop; 5982 uint_t op; 5983 5984 resop = &resp->array[i]; 5985 op = (uint_t)resop->resop; 5986 if (op < rfsv4disp_cnt) { 5987 (*rfsv4disptab[op].dis_resfree)(resop); 5988 } 5989 } 5990 if (resp->array != NULL) { 5991 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 5992 } 5993 } 5994 5995 /* 5996 * Process the value of the compound request rpc flags, as a bit-AND 5997 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 5998 */ 5999 void 6000 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 6001 { 6002 int i; 6003 int flag = RPC_ALL; 6004 6005 for (i = 0; flag && i < args->array_len; i++) { 6006 uint_t op; 6007 6008 op = (uint_t)args->array[i].argop; 6009 6010 if (op < rfsv4disp_cnt) 6011 flag &= rfsv4disptab[op].dis_flags; 6012 else 6013 flag = 0; 6014 } 6015 *flagp = flag; 6016 } 6017 6018 nfsstat4 6019 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 6020 { 6021 nfsstat4 e; 6022 6023 rfs4_dbe_lock(cp->rc_dbe); 6024 6025 if (cp->rc_sysidt != LM_NOSYSID) { 6026 *sp = cp->rc_sysidt; 6027 e = NFS4_OK; 6028 6029 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 6030 *sp = cp->rc_sysidt; 6031 e = NFS4_OK; 6032 6033 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6034 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 6035 } else 6036 e = NFS4ERR_DELAY; 6037 6038 rfs4_dbe_unlock(cp->rc_dbe); 6039 return (e); 6040 } 6041 6042 #if defined(DEBUG) && ! defined(lint) 6043 static void lock_print(char *str, int operation, struct flock64 *flk) 6044 { 6045 char *op, *type; 6046 6047 switch (operation) { 6048 case F_GETLK: op = "F_GETLK"; 6049 break; 6050 case F_SETLK: op = "F_SETLK"; 6051 break; 6052 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6053 break; 6054 default: op = "F_UNKNOWN"; 6055 break; 6056 } 6057 switch (flk->l_type) { 6058 case F_UNLCK: type = "F_UNLCK"; 6059 break; 6060 case F_RDLCK: type = "F_RDLCK"; 6061 break; 6062 case F_WRLCK: type = "F_WRLCK"; 6063 break; 6064 default: type = "F_UNKNOWN"; 6065 break; 6066 } 6067 6068 ASSERT(flk->l_whence == 0); 6069 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6070 str, op, type, (longlong_t)flk->l_start, 6071 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6072 } 6073 6074 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6075 #else 6076 #define LOCK_PRINT(d, s, t, f) 6077 #endif 6078 6079 /*ARGSUSED*/ 6080 static bool_t 6081 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6082 { 6083 return (TRUE); 6084 } 6085 6086 /* 6087 * Look up the pathname using the vp in cs as the directory vnode. 6088 * cs->vp will be the vnode for the file on success 6089 */ 6090 6091 static nfsstat4 6092 rfs4_lookup(component4 *component, struct svc_req *req, 6093 struct compound_state *cs) 6094 { 6095 char *nm; 6096 uint32_t len; 6097 nfsstat4 status; 6098 struct sockaddr *ca; 6099 char *name; 6100 6101 if (cs->vp == NULL) { 6102 return (NFS4ERR_NOFILEHANDLE); 6103 } 6104 if (cs->vp->v_type != VDIR) { 6105 return (NFS4ERR_NOTDIR); 6106 } 6107 6108 status = utf8_dir_verify(component); 6109 if (status != NFS4_OK) 6110 return (status); 6111 6112 nm = utf8_to_fn(component, &len, NULL); 6113 if (nm == NULL) { 6114 return (NFS4ERR_INVAL); 6115 } 6116 6117 if (len > MAXNAMELEN) { 6118 kmem_free(nm, len); 6119 return (NFS4ERR_NAMETOOLONG); 6120 } 6121 6122 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6123 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6124 MAXPATHLEN + 1); 6125 6126 if (name == NULL) { 6127 kmem_free(nm, len); 6128 return (NFS4ERR_INVAL); 6129 } 6130 6131 status = do_rfs4_op_lookup(name, req, cs); 6132 6133 if (name != nm) 6134 kmem_free(name, MAXPATHLEN + 1); 6135 6136 kmem_free(nm, len); 6137 6138 return (status); 6139 } 6140 6141 static nfsstat4 6142 rfs4_lookupfile(component4 *component, struct svc_req *req, 6143 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6144 { 6145 nfsstat4 status; 6146 vnode_t *dvp = cs->vp; 6147 vattr_t bva, ava, fva; 6148 int error; 6149 6150 /* Get "before" change value */ 6151 bva.va_mask = AT_CTIME|AT_SEQ; 6152 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6153 if (error) 6154 return (puterrno4(error)); 6155 6156 /* rfs4_lookup may VN_RELE directory */ 6157 VN_HOLD(dvp); 6158 6159 status = rfs4_lookup(component, req, cs); 6160 if (status != NFS4_OK) { 6161 VN_RELE(dvp); 6162 return (status); 6163 } 6164 6165 /* 6166 * Get "after" change value, if it fails, simply return the 6167 * before value. 6168 */ 6169 ava.va_mask = AT_CTIME|AT_SEQ; 6170 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6171 ava.va_ctime = bva.va_ctime; 6172 ava.va_seq = 0; 6173 } 6174 VN_RELE(dvp); 6175 6176 /* 6177 * Validate the file is a file 6178 */ 6179 fva.va_mask = AT_TYPE|AT_MODE; 6180 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6181 if (error) 6182 return (puterrno4(error)); 6183 6184 if (fva.va_type != VREG) { 6185 if (fva.va_type == VDIR) 6186 return (NFS4ERR_ISDIR); 6187 if (fva.va_type == VLNK) 6188 return (NFS4ERR_SYMLINK); 6189 return (NFS4ERR_INVAL); 6190 } 6191 6192 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6193 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6194 6195 /* 6196 * It is undefined if VOP_LOOKUP will change va_seq, so 6197 * cinfo.atomic = TRUE only if we have 6198 * non-zero va_seq's, and they have not changed. 6199 */ 6200 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6201 cinfo->atomic = TRUE; 6202 else 6203 cinfo->atomic = FALSE; 6204 6205 /* Check for mandatory locking */ 6206 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6207 return (check_open_access(access, cs, req)); 6208 } 6209 6210 static nfsstat4 6211 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6212 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6213 { 6214 int error; 6215 nfsstat4 status = NFS4_OK; 6216 vattr_t va; 6217 6218 tryagain: 6219 6220 /* 6221 * The file open mode used is VWRITE. If the client needs 6222 * some other semantic, then it should do the access checking 6223 * itself. It would have been nice to have the file open mode 6224 * passed as part of the arguments. 6225 */ 6226 6227 *created = TRUE; 6228 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6229 6230 if (error) { 6231 *created = FALSE; 6232 6233 /* 6234 * If we got something other than file already exists 6235 * then just return this error. Otherwise, we got 6236 * EEXIST. If we were doing a GUARDED create, then 6237 * just return this error. Otherwise, we need to 6238 * make sure that this wasn't a duplicate of an 6239 * exclusive create request. 6240 * 6241 * The assumption is made that a non-exclusive create 6242 * request will never return EEXIST. 6243 */ 6244 6245 if (error != EEXIST || mode == GUARDED4) { 6246 status = puterrno4(error); 6247 return (status); 6248 } 6249 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6250 NULL, NULL, NULL); 6251 6252 if (error) { 6253 /* 6254 * We couldn't find the file that we thought that 6255 * we just created. So, we'll just try creating 6256 * it again. 6257 */ 6258 if (error == ENOENT) 6259 goto tryagain; 6260 6261 status = puterrno4(error); 6262 return (status); 6263 } 6264 6265 if (mode == UNCHECKED4) { 6266 /* existing object must be regular file */ 6267 if ((*vpp)->v_type != VREG) { 6268 if ((*vpp)->v_type == VDIR) 6269 status = NFS4ERR_ISDIR; 6270 else if ((*vpp)->v_type == VLNK) 6271 status = NFS4ERR_SYMLINK; 6272 else 6273 status = NFS4ERR_INVAL; 6274 VN_RELE(*vpp); 6275 return (status); 6276 } 6277 6278 return (NFS4_OK); 6279 } 6280 6281 /* Check for duplicate request */ 6282 ASSERT(mtime != 0); 6283 va.va_mask = AT_MTIME; 6284 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6285 if (!error) { 6286 /* We found the file */ 6287 if (va.va_mtime.tv_sec != mtime->tv_sec || 6288 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6289 /* but its not our creation */ 6290 VN_RELE(*vpp); 6291 return (NFS4ERR_EXIST); 6292 } 6293 *created = TRUE; /* retrans of create == created */ 6294 return (NFS4_OK); 6295 } 6296 VN_RELE(*vpp); 6297 return (NFS4ERR_EXIST); 6298 } 6299 6300 return (NFS4_OK); 6301 } 6302 6303 static nfsstat4 6304 check_open_access(uint32_t access, struct compound_state *cs, 6305 struct svc_req *req) 6306 { 6307 int error; 6308 vnode_t *vp; 6309 bool_t readonly; 6310 cred_t *cr = cs->cr; 6311 6312 /* For now we don't allow mandatory locking as per V2/V3 */ 6313 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6314 return (NFS4ERR_ACCESS); 6315 } 6316 6317 vp = cs->vp; 6318 ASSERT(cr != NULL && vp->v_type == VREG); 6319 6320 /* 6321 * If the file system is exported read only and we are trying 6322 * to open for write, then return NFS4ERR_ROFS 6323 */ 6324 6325 readonly = rdonly4(req, cs); 6326 6327 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6328 return (NFS4ERR_ROFS); 6329 6330 if (access & OPEN4_SHARE_ACCESS_READ) { 6331 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6332 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6333 return (NFS4ERR_ACCESS); 6334 } 6335 } 6336 6337 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6338 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6339 if (error) 6340 return (NFS4ERR_ACCESS); 6341 } 6342 6343 return (NFS4_OK); 6344 } 6345 6346 static nfsstat4 6347 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6348 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6349 { 6350 struct nfs4_svgetit_arg sarg; 6351 struct nfs4_ntov_table ntov; 6352 6353 bool_t ntov_table_init = FALSE; 6354 struct statvfs64 sb; 6355 nfsstat4 status; 6356 vnode_t *vp; 6357 vattr_t bva, ava, iva, cva, *vap; 6358 vnode_t *dvp; 6359 timespec32_t *mtime; 6360 char *nm = NULL; 6361 uint_t buflen; 6362 bool_t created; 6363 bool_t setsize = FALSE; 6364 len_t reqsize; 6365 int error; 6366 bool_t trunc; 6367 caller_context_t ct; 6368 component4 *component; 6369 bslabel_t *clabel; 6370 struct sockaddr *ca; 6371 char *name = NULL; 6372 6373 sarg.sbp = &sb; 6374 sarg.is_referral = B_FALSE; 6375 6376 dvp = cs->vp; 6377 6378 /* Check if the file system is read only */ 6379 if (rdonly4(req, cs)) 6380 return (NFS4ERR_ROFS); 6381 6382 /* check the label of including directory */ 6383 if (is_system_labeled()) { 6384 ASSERT(req->rq_label != NULL); 6385 clabel = req->rq_label; 6386 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6387 "got client label from request(1)", 6388 struct svc_req *, req); 6389 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6390 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6391 cs->exi)) { 6392 return (NFS4ERR_ACCESS); 6393 } 6394 } 6395 } 6396 6397 /* 6398 * Get the last component of path name in nm. cs will reference 6399 * the including directory on success. 6400 */ 6401 component = &args->open_claim4_u.file; 6402 status = utf8_dir_verify(component); 6403 if (status != NFS4_OK) 6404 return (status); 6405 6406 nm = utf8_to_fn(component, &buflen, NULL); 6407 6408 if (nm == NULL) 6409 return (NFS4ERR_RESOURCE); 6410 6411 if (buflen > MAXNAMELEN) { 6412 kmem_free(nm, buflen); 6413 return (NFS4ERR_NAMETOOLONG); 6414 } 6415 6416 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6417 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6418 if (error) { 6419 kmem_free(nm, buflen); 6420 return (puterrno4(error)); 6421 } 6422 6423 if (bva.va_type != VDIR) { 6424 kmem_free(nm, buflen); 6425 return (NFS4ERR_NOTDIR); 6426 } 6427 6428 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6429 6430 switch (args->mode) { 6431 case GUARDED4: 6432 /*FALLTHROUGH*/ 6433 case UNCHECKED4: 6434 nfs4_ntov_table_init(&ntov); 6435 ntov_table_init = TRUE; 6436 6437 *attrset = 0; 6438 status = do_rfs4_set_attrs(attrset, 6439 &args->createhow4_u.createattrs, 6440 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6441 6442 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6443 sarg.vap->va_type != VREG) { 6444 if (sarg.vap->va_type == VDIR) 6445 status = NFS4ERR_ISDIR; 6446 else if (sarg.vap->va_type == VLNK) 6447 status = NFS4ERR_SYMLINK; 6448 else 6449 status = NFS4ERR_INVAL; 6450 } 6451 6452 if (status != NFS4_OK) { 6453 kmem_free(nm, buflen); 6454 nfs4_ntov_table_free(&ntov, &sarg); 6455 *attrset = 0; 6456 return (status); 6457 } 6458 6459 vap = sarg.vap; 6460 vap->va_type = VREG; 6461 vap->va_mask |= AT_TYPE; 6462 6463 if ((vap->va_mask & AT_MODE) == 0) { 6464 vap->va_mask |= AT_MODE; 6465 vap->va_mode = (mode_t)0600; 6466 } 6467 6468 if (vap->va_mask & AT_SIZE) { 6469 6470 /* Disallow create with a non-zero size */ 6471 6472 if ((reqsize = sarg.vap->va_size) != 0) { 6473 kmem_free(nm, buflen); 6474 nfs4_ntov_table_free(&ntov, &sarg); 6475 *attrset = 0; 6476 return (NFS4ERR_INVAL); 6477 } 6478 setsize = TRUE; 6479 } 6480 break; 6481 6482 case EXCLUSIVE4: 6483 /* prohibit EXCL create of named attributes */ 6484 if (dvp->v_flag & V_XATTRDIR) { 6485 kmem_free(nm, buflen); 6486 *attrset = 0; 6487 return (NFS4ERR_INVAL); 6488 } 6489 6490 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6491 cva.va_type = VREG; 6492 /* 6493 * Ensure no time overflows. Assumes underlying 6494 * filesystem supports at least 32 bits. 6495 * Truncate nsec to usec resolution to allow valid 6496 * compares even if the underlying filesystem truncates. 6497 */ 6498 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6499 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6500 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6501 cva.va_mode = (mode_t)0; 6502 vap = &cva; 6503 6504 /* 6505 * For EXCL create, attrset is set to the server attr 6506 * used to cache the client's verifier. 6507 */ 6508 *attrset = FATTR4_TIME_MODIFY_MASK; 6509 break; 6510 } 6511 6512 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6513 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6514 MAXPATHLEN + 1); 6515 6516 if (name == NULL) { 6517 kmem_free(nm, buflen); 6518 return (NFS4ERR_SERVERFAULT); 6519 } 6520 6521 status = create_vnode(dvp, name, vap, args->mode, mtime, 6522 cs->cr, &vp, &created); 6523 if (nm != name) 6524 kmem_free(name, MAXPATHLEN + 1); 6525 kmem_free(nm, buflen); 6526 6527 if (status != NFS4_OK) { 6528 if (ntov_table_init) 6529 nfs4_ntov_table_free(&ntov, &sarg); 6530 *attrset = 0; 6531 return (status); 6532 } 6533 6534 trunc = (setsize && !created); 6535 6536 if (args->mode != EXCLUSIVE4) { 6537 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6538 6539 /* 6540 * True verification that object was created with correct 6541 * attrs is impossible. The attrs could have been changed 6542 * immediately after object creation. If attributes did 6543 * not verify, the only recourse for the server is to 6544 * destroy the object. Maybe if some attrs (like gid) 6545 * are set incorrectly, the object should be destroyed; 6546 * however, seems bad as a default policy. Do we really 6547 * want to destroy an object over one of the times not 6548 * verifying correctly? For these reasons, the server 6549 * currently sets bits in attrset for createattrs 6550 * that were set; however, no verification is done. 6551 * 6552 * vmask_to_nmask accounts for vattr bits set on create 6553 * [do_rfs4_set_attrs() only sets resp bits for 6554 * non-vattr/vfs bits.] 6555 * Mask off any bits we set by default so as not to return 6556 * more attrset bits than were requested in createattrs 6557 */ 6558 if (created) { 6559 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6560 *attrset &= createmask; 6561 } else { 6562 /* 6563 * We did not create the vnode (we tried but it 6564 * already existed). In this case, the only createattr 6565 * that the spec allows the server to set is size, 6566 * and even then, it can only be set if it is 0. 6567 */ 6568 *attrset = 0; 6569 if (trunc) 6570 *attrset = FATTR4_SIZE_MASK; 6571 } 6572 } 6573 if (ntov_table_init) 6574 nfs4_ntov_table_free(&ntov, &sarg); 6575 6576 /* 6577 * Get the initial "after" sequence number, if it fails, 6578 * set to zero, time to before. 6579 */ 6580 iva.va_mask = AT_CTIME|AT_SEQ; 6581 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6582 iva.va_seq = 0; 6583 iva.va_ctime = bva.va_ctime; 6584 } 6585 6586 /* 6587 * create_vnode attempts to create the file exclusive, 6588 * if it already exists the VOP_CREATE will fail and 6589 * may not increase va_seq. It is atomic if 6590 * we haven't changed the directory, but if it has changed 6591 * we don't know what changed it. 6592 */ 6593 if (!created) { 6594 if (bva.va_seq && iva.va_seq && 6595 bva.va_seq == iva.va_seq) 6596 cinfo->atomic = TRUE; 6597 else 6598 cinfo->atomic = FALSE; 6599 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6600 } else { 6601 /* 6602 * The entry was created, we need to sync the 6603 * directory metadata. 6604 */ 6605 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6606 6607 /* 6608 * Get "after" change value, if it fails, simply return the 6609 * before value. 6610 */ 6611 ava.va_mask = AT_CTIME|AT_SEQ; 6612 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6613 ava.va_ctime = bva.va_ctime; 6614 ava.va_seq = 0; 6615 } 6616 6617 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6618 6619 /* 6620 * The cinfo->atomic = TRUE only if we have 6621 * non-zero va_seq's, and it has incremented by exactly one 6622 * during the create_vnode and it didn't 6623 * change during the VOP_FSYNC. 6624 */ 6625 if (bva.va_seq && iva.va_seq && ava.va_seq && 6626 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6627 cinfo->atomic = TRUE; 6628 else 6629 cinfo->atomic = FALSE; 6630 } 6631 6632 /* Check for mandatory locking and that the size gets set. */ 6633 cva.va_mask = AT_MODE; 6634 if (setsize) 6635 cva.va_mask |= AT_SIZE; 6636 6637 /* Assume the worst */ 6638 cs->mandlock = TRUE; 6639 6640 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6641 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6642 6643 /* 6644 * Truncate the file if necessary; this would be 6645 * the case for create over an existing file. 6646 */ 6647 6648 if (trunc) { 6649 int in_crit = 0; 6650 rfs4_file_t *fp; 6651 bool_t create = FALSE; 6652 6653 /* 6654 * We are writing over an existing file. 6655 * Check to see if we need to recall a delegation. 6656 */ 6657 rfs4_hold_deleg_policy(); 6658 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6659 if (rfs4_check_delegated_byfp(FWRITE, fp, 6660 (reqsize == 0), FALSE, FALSE, &clientid)) { 6661 rfs4_file_rele(fp); 6662 rfs4_rele_deleg_policy(); 6663 VN_RELE(vp); 6664 *attrset = 0; 6665 return (NFS4ERR_DELAY); 6666 } 6667 rfs4_file_rele(fp); 6668 } 6669 rfs4_rele_deleg_policy(); 6670 6671 if (nbl_need_check(vp)) { 6672 in_crit = 1; 6673 6674 ASSERT(reqsize == 0); 6675 6676 nbl_start_crit(vp, RW_READER); 6677 if (nbl_conflict(vp, NBL_WRITE, 0, 6678 cva.va_size, 0, NULL)) { 6679 in_crit = 0; 6680 nbl_end_crit(vp); 6681 VN_RELE(vp); 6682 *attrset = 0; 6683 return (NFS4ERR_ACCESS); 6684 } 6685 } 6686 ct.cc_sysid = 0; 6687 ct.cc_pid = 0; 6688 ct.cc_caller_id = nfs4_srv_caller_id; 6689 ct.cc_flags = CC_DONTBLOCK; 6690 6691 cva.va_mask = AT_SIZE; 6692 cva.va_size = reqsize; 6693 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6694 if (in_crit) 6695 nbl_end_crit(vp); 6696 } 6697 } 6698 6699 error = makefh4(&cs->fh, vp, cs->exi); 6700 6701 /* 6702 * Force modified data and metadata out to stable storage. 6703 */ 6704 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6705 6706 if (error) { 6707 VN_RELE(vp); 6708 *attrset = 0; 6709 return (puterrno4(error)); 6710 } 6711 6712 /* if parent dir is attrdir, set namedattr fh flag */ 6713 if (dvp->v_flag & V_XATTRDIR) 6714 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6715 6716 if (cs->vp) 6717 VN_RELE(cs->vp); 6718 6719 cs->vp = vp; 6720 6721 /* 6722 * if we did not create the file, we will need to check 6723 * the access bits on the file 6724 */ 6725 6726 if (!created) { 6727 if (setsize) 6728 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6729 status = check_open_access(args->share_access, cs, req); 6730 if (status != NFS4_OK) 6731 *attrset = 0; 6732 } 6733 return (status); 6734 } 6735 6736 /*ARGSUSED*/ 6737 static void 6738 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6739 rfs4_openowner_t *oo, delegreq_t deleg, 6740 uint32_t access, uint32_t deny, 6741 OPEN4res *resp, int deleg_cur) 6742 { 6743 /* XXX Currently not using req */ 6744 rfs4_state_t *sp; 6745 rfs4_file_t *fp; 6746 bool_t screate = TRUE; 6747 bool_t fcreate = TRUE; 6748 uint32_t open_a, share_a; 6749 uint32_t open_d, share_d; 6750 rfs4_deleg_state_t *dsp; 6751 sysid_t sysid; 6752 nfsstat4 status; 6753 caller_context_t ct; 6754 int fflags = 0; 6755 int recall = 0; 6756 int err; 6757 int first_open; 6758 6759 /* get the file struct and hold a lock on it during initial open */ 6760 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6761 if (fp == NULL) { 6762 resp->status = NFS4ERR_RESOURCE; 6763 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6764 return; 6765 } 6766 6767 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6768 if (sp == NULL) { 6769 resp->status = NFS4ERR_RESOURCE; 6770 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6771 /* No need to keep any reference */ 6772 rw_exit(&fp->rf_file_rwlock); 6773 rfs4_file_rele(fp); 6774 return; 6775 } 6776 6777 /* try to get the sysid before continuing */ 6778 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6779 resp->status = status; 6780 rfs4_file_rele(fp); 6781 /* Not a fully formed open; "close" it */ 6782 if (screate == TRUE) 6783 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6784 rfs4_state_rele(sp); 6785 return; 6786 } 6787 6788 /* Calculate the fflags for this OPEN. */ 6789 if (access & OPEN4_SHARE_ACCESS_READ) 6790 fflags |= FREAD; 6791 if (access & OPEN4_SHARE_ACCESS_WRITE) 6792 fflags |= FWRITE; 6793 6794 rfs4_dbe_lock(sp->rs_dbe); 6795 6796 /* 6797 * Calculate the new deny and access mode that this open is adding to 6798 * the file for this open owner; 6799 */ 6800 open_d = (deny & ~sp->rs_open_deny); 6801 open_a = (access & ~sp->rs_open_access); 6802 6803 /* 6804 * Calculate the new share access and share deny modes that this open 6805 * is adding to the file for this open owner; 6806 */ 6807 share_a = (access & ~sp->rs_share_access); 6808 share_d = (deny & ~sp->rs_share_deny); 6809 6810 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6811 6812 /* 6813 * Check to see the client has already sent an open for this 6814 * open owner on this file with the same share/deny modes. 6815 * If so, we don't need to check for a conflict and we don't 6816 * need to add another shrlock. If not, then we need to 6817 * check for conflicts in deny and access before checking for 6818 * conflicts in delegation. We don't want to recall a 6819 * delegation based on an open that will eventually fail based 6820 * on shares modes. 6821 */ 6822 6823 if (share_a || share_d) { 6824 if ((err = rfs4_share(sp, access, deny)) != 0) { 6825 rfs4_dbe_unlock(sp->rs_dbe); 6826 resp->status = err; 6827 6828 rfs4_file_rele(fp); 6829 /* Not a fully formed open; "close" it */ 6830 if (screate == TRUE) 6831 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6832 rfs4_state_rele(sp); 6833 return; 6834 } 6835 } 6836 6837 rfs4_dbe_lock(fp->rf_dbe); 6838 6839 /* 6840 * Check to see if this file is delegated and if so, if a 6841 * recall needs to be done. 6842 */ 6843 if (rfs4_check_recall(sp, access)) { 6844 rfs4_dbe_unlock(fp->rf_dbe); 6845 rfs4_dbe_unlock(sp->rs_dbe); 6846 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6847 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6848 rfs4_dbe_lock(sp->rs_dbe); 6849 6850 /* if state closed while lock was dropped */ 6851 if (sp->rs_closed) { 6852 if (share_a || share_d) 6853 (void) rfs4_unshare(sp); 6854 rfs4_dbe_unlock(sp->rs_dbe); 6855 rfs4_file_rele(fp); 6856 /* Not a fully formed open; "close" it */ 6857 if (screate == TRUE) 6858 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6859 rfs4_state_rele(sp); 6860 resp->status = NFS4ERR_OLD_STATEID; 6861 return; 6862 } 6863 6864 rfs4_dbe_lock(fp->rf_dbe); 6865 /* Let's see if the delegation was returned */ 6866 if (rfs4_check_recall(sp, access)) { 6867 rfs4_dbe_unlock(fp->rf_dbe); 6868 if (share_a || share_d) 6869 (void) rfs4_unshare(sp); 6870 rfs4_dbe_unlock(sp->rs_dbe); 6871 rfs4_file_rele(fp); 6872 rfs4_update_lease(sp->rs_owner->ro_client); 6873 6874 /* Not a fully formed open; "close" it */ 6875 if (screate == TRUE) 6876 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6877 rfs4_state_rele(sp); 6878 resp->status = NFS4ERR_DELAY; 6879 return; 6880 } 6881 } 6882 /* 6883 * the share check passed and any delegation conflict has been 6884 * taken care of, now call vop_open. 6885 * if this is the first open then call vop_open with fflags. 6886 * if not, call vn_open_upgrade with just the upgrade flags. 6887 * 6888 * if the file has been opened already, it will have the current 6889 * access mode in the state struct. if it has no share access, then 6890 * this is a new open. 6891 * 6892 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 6893 * call VOP_OPEN(), just do the open upgrade. 6894 */ 6895 if (first_open && !deleg_cur) { 6896 ct.cc_sysid = sysid; 6897 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 6898 ct.cc_caller_id = nfs4_srv_caller_id; 6899 ct.cc_flags = CC_DONTBLOCK; 6900 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 6901 if (err) { 6902 rfs4_dbe_unlock(fp->rf_dbe); 6903 if (share_a || share_d) 6904 (void) rfs4_unshare(sp); 6905 rfs4_dbe_unlock(sp->rs_dbe); 6906 rfs4_file_rele(fp); 6907 6908 /* Not a fully formed open; "close" it */ 6909 if (screate == TRUE) 6910 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6911 rfs4_state_rele(sp); 6912 /* check if a monitor detected a delegation conflict */ 6913 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 6914 resp->status = NFS4ERR_DELAY; 6915 else 6916 resp->status = NFS4ERR_SERVERFAULT; 6917 return; 6918 } 6919 } else { /* open upgrade */ 6920 /* 6921 * calculate the fflags for the new mode that is being added 6922 * by this upgrade. 6923 */ 6924 fflags = 0; 6925 if (open_a & OPEN4_SHARE_ACCESS_READ) 6926 fflags |= FREAD; 6927 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6928 fflags |= FWRITE; 6929 vn_open_upgrade(cs->vp, fflags); 6930 } 6931 sp->rs_open_access |= access; 6932 sp->rs_open_deny |= deny; 6933 6934 if (open_d & OPEN4_SHARE_DENY_READ) 6935 fp->rf_deny_read++; 6936 if (open_d & OPEN4_SHARE_DENY_WRITE) 6937 fp->rf_deny_write++; 6938 fp->rf_share_deny |= deny; 6939 6940 if (open_a & OPEN4_SHARE_ACCESS_READ) 6941 fp->rf_access_read++; 6942 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 6943 fp->rf_access_write++; 6944 fp->rf_share_access |= access; 6945 6946 /* 6947 * Check for delegation here. if the deleg argument is not 6948 * DELEG_ANY, then this is a reclaim from a client and 6949 * we must honor the delegation requested. If necessary we can 6950 * set the recall flag. 6951 */ 6952 6953 dsp = rfs4_grant_delegation(deleg, sp, &recall); 6954 6955 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 6956 6957 next_stateid(&sp->rs_stateid); 6958 6959 resp->stateid = sp->rs_stateid.stateid; 6960 6961 rfs4_dbe_unlock(fp->rf_dbe); 6962 rfs4_dbe_unlock(sp->rs_dbe); 6963 6964 if (dsp) { 6965 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 6966 rfs4_deleg_state_rele(dsp); 6967 } 6968 6969 rfs4_file_rele(fp); 6970 rfs4_state_rele(sp); 6971 6972 resp->status = NFS4_OK; 6973 } 6974 6975 /*ARGSUSED*/ 6976 static void 6977 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 6978 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 6979 { 6980 change_info4 *cinfo = &resp->cinfo; 6981 bitmap4 *attrset = &resp->attrset; 6982 6983 if (args->opentype == OPEN4_NOCREATE) 6984 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 6985 req, cs, args->share_access, cinfo); 6986 else { 6987 /* inhibit delegation grants during exclusive create */ 6988 6989 if (args->mode == EXCLUSIVE4) 6990 rfs4_disable_delegation(); 6991 6992 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 6993 oo->ro_client->rc_clientid); 6994 } 6995 6996 if (resp->status == NFS4_OK) { 6997 6998 /* cs->vp cs->fh now reference the desired file */ 6999 7000 rfs4_do_open(cs, req, oo, 7001 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 7002 args->share_access, args->share_deny, resp, 0); 7003 7004 /* 7005 * If rfs4_createfile set attrset, we must 7006 * clear this attrset before the response is copied. 7007 */ 7008 if (resp->status != NFS4_OK && resp->attrset) { 7009 resp->attrset = 0; 7010 } 7011 } 7012 else 7013 *cs->statusp = resp->status; 7014 7015 if (args->mode == EXCLUSIVE4) 7016 rfs4_enable_delegation(); 7017 } 7018 7019 /*ARGSUSED*/ 7020 static void 7021 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 7022 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7023 { 7024 change_info4 *cinfo = &resp->cinfo; 7025 vattr_t va; 7026 vtype_t v_type = cs->vp->v_type; 7027 int error = 0; 7028 7029 /* Verify that we have a regular file */ 7030 if (v_type != VREG) { 7031 if (v_type == VDIR) 7032 resp->status = NFS4ERR_ISDIR; 7033 else if (v_type == VLNK) 7034 resp->status = NFS4ERR_SYMLINK; 7035 else 7036 resp->status = NFS4ERR_INVAL; 7037 return; 7038 } 7039 7040 va.va_mask = AT_MODE|AT_UID; 7041 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7042 if (error) { 7043 resp->status = puterrno4(error); 7044 return; 7045 } 7046 7047 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7048 7049 /* 7050 * Check if we have access to the file, Note the the file 7051 * could have originally been open UNCHECKED or GUARDED 7052 * with mode bits that will now fail, but there is nothing 7053 * we can really do about that except in the case that the 7054 * owner of the file is the one requesting the open. 7055 */ 7056 if (crgetuid(cs->cr) != va.va_uid) { 7057 resp->status = check_open_access(args->share_access, cs, req); 7058 if (resp->status != NFS4_OK) { 7059 return; 7060 } 7061 } 7062 7063 /* 7064 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7065 */ 7066 cinfo->before = 0; 7067 cinfo->after = 0; 7068 cinfo->atomic = FALSE; 7069 7070 rfs4_do_open(cs, req, oo, 7071 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 7072 args->share_access, args->share_deny, resp, 0); 7073 } 7074 7075 static void 7076 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7077 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7078 { 7079 int error; 7080 nfsstat4 status; 7081 stateid4 stateid = 7082 args->open_claim4_u.delegate_cur_info.delegate_stateid; 7083 rfs4_deleg_state_t *dsp; 7084 7085 /* 7086 * Find the state info from the stateid and confirm that the 7087 * file is delegated. If the state openowner is the same as 7088 * the supplied openowner we're done. If not, get the file 7089 * info from the found state info. Use that file info to 7090 * create the state for this lock owner. Note solaris doen't 7091 * really need the pathname to find the file. We may want to 7092 * lookup the pathname and make sure that the vp exist and 7093 * matches the vp in the file structure. However it is 7094 * possible that the pathname nolonger exists (local process 7095 * unlinks the file), so this may not be that useful. 7096 */ 7097 7098 status = rfs4_get_deleg_state(&stateid, &dsp); 7099 if (status != NFS4_OK) { 7100 resp->status = status; 7101 return; 7102 } 7103 7104 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7105 7106 /* 7107 * New lock owner, create state. Since this was probably called 7108 * in response to a CB_RECALL we set deleg to DELEG_NONE 7109 */ 7110 7111 ASSERT(cs->vp != NULL); 7112 VN_RELE(cs->vp); 7113 VN_HOLD(dsp->rds_finfo->rf_vp); 7114 cs->vp = dsp->rds_finfo->rf_vp; 7115 7116 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7117 rfs4_deleg_state_rele(dsp); 7118 *cs->statusp = resp->status = puterrno4(error); 7119 return; 7120 } 7121 7122 /* Mark progress for delegation returns */ 7123 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7124 rfs4_deleg_state_rele(dsp); 7125 rfs4_do_open(cs, req, oo, DELEG_NONE, 7126 args->share_access, args->share_deny, resp, 1); 7127 } 7128 7129 /*ARGSUSED*/ 7130 static void 7131 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7132 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7133 { 7134 /* 7135 * Lookup the pathname, it must already exist since this file 7136 * was delegated. 7137 * 7138 * Find the file and state info for this vp and open owner pair. 7139 * check that they are in fact delegated. 7140 * check that the state access and deny modes are the same. 7141 * 7142 * Return the delgation possibly seting the recall flag. 7143 */ 7144 rfs4_file_t *fp; 7145 rfs4_state_t *sp; 7146 bool_t create = FALSE; 7147 bool_t dcreate = FALSE; 7148 rfs4_deleg_state_t *dsp; 7149 nfsace4 *ace; 7150 7151 /* Note we ignore oflags */ 7152 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7153 req, cs, args->share_access, &resp->cinfo); 7154 7155 if (resp->status != NFS4_OK) { 7156 return; 7157 } 7158 7159 /* get the file struct and hold a lock on it during initial open */ 7160 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7161 if (fp == NULL) { 7162 resp->status = NFS4ERR_RESOURCE; 7163 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7164 return; 7165 } 7166 7167 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7168 if (sp == NULL) { 7169 resp->status = NFS4ERR_SERVERFAULT; 7170 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7171 rw_exit(&fp->rf_file_rwlock); 7172 rfs4_file_rele(fp); 7173 return; 7174 } 7175 7176 rfs4_dbe_lock(sp->rs_dbe); 7177 rfs4_dbe_lock(fp->rf_dbe); 7178 if (args->share_access != sp->rs_share_access || 7179 args->share_deny != sp->rs_share_deny || 7180 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7181 NFS4_DEBUG(rfs4_debug, 7182 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7183 rfs4_dbe_unlock(fp->rf_dbe); 7184 rfs4_dbe_unlock(sp->rs_dbe); 7185 rfs4_file_rele(fp); 7186 rfs4_state_rele(sp); 7187 resp->status = NFS4ERR_SERVERFAULT; 7188 return; 7189 } 7190 rfs4_dbe_unlock(fp->rf_dbe); 7191 rfs4_dbe_unlock(sp->rs_dbe); 7192 7193 dsp = rfs4_finddeleg(sp, &dcreate); 7194 if (dsp == NULL) { 7195 rfs4_state_rele(sp); 7196 rfs4_file_rele(fp); 7197 resp->status = NFS4ERR_SERVERFAULT; 7198 return; 7199 } 7200 7201 next_stateid(&sp->rs_stateid); 7202 7203 resp->stateid = sp->rs_stateid.stateid; 7204 7205 resp->delegation.delegation_type = dsp->rds_dtype; 7206 7207 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7208 open_read_delegation4 *rv = 7209 &resp->delegation.open_delegation4_u.read; 7210 7211 rv->stateid = dsp->rds_delegid.stateid; 7212 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7213 ace = &rv->permissions; 7214 } else { 7215 open_write_delegation4 *rv = 7216 &resp->delegation.open_delegation4_u.write; 7217 7218 rv->stateid = dsp->rds_delegid.stateid; 7219 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7220 ace = &rv->permissions; 7221 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7222 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7223 } 7224 7225 /* XXX For now */ 7226 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7227 ace->flag = 0; 7228 ace->access_mask = 0; 7229 ace->who.utf8string_len = 0; 7230 ace->who.utf8string_val = 0; 7231 7232 rfs4_deleg_state_rele(dsp); 7233 rfs4_state_rele(sp); 7234 rfs4_file_rele(fp); 7235 } 7236 7237 typedef enum { 7238 NFS4_CHKSEQ_OKAY = 0, 7239 NFS4_CHKSEQ_REPLAY = 1, 7240 NFS4_CHKSEQ_BAD = 2 7241 } rfs4_chkseq_t; 7242 7243 /* 7244 * Generic function for sequence number checks. 7245 */ 7246 static rfs4_chkseq_t 7247 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7248 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7249 { 7250 /* Same sequence ids and matching operations? */ 7251 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7252 if (copyres == TRUE) { 7253 rfs4_free_reply(resop); 7254 rfs4_copy_reply(resop, lastop); 7255 } 7256 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7257 "Replayed SEQID %d\n", seqid)); 7258 return (NFS4_CHKSEQ_REPLAY); 7259 } 7260 7261 /* If the incoming sequence is not the next expected then it is bad */ 7262 if (rqst_seq != seqid + 1) { 7263 if (rqst_seq == seqid) { 7264 NFS4_DEBUG(rfs4_debug, 7265 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7266 "but last op was %d current op is %d\n", 7267 lastop->resop, resop->resop)); 7268 return (NFS4_CHKSEQ_BAD); 7269 } 7270 NFS4_DEBUG(rfs4_debug, 7271 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7272 rqst_seq, seqid)); 7273 return (NFS4_CHKSEQ_BAD); 7274 } 7275 7276 /* Everything okay -- next expected */ 7277 return (NFS4_CHKSEQ_OKAY); 7278 } 7279 7280 7281 static rfs4_chkseq_t 7282 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7283 { 7284 rfs4_chkseq_t rc; 7285 7286 rfs4_dbe_lock(op->ro_dbe); 7287 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7288 TRUE); 7289 rfs4_dbe_unlock(op->ro_dbe); 7290 7291 if (rc == NFS4_CHKSEQ_OKAY) 7292 rfs4_update_lease(op->ro_client); 7293 7294 return (rc); 7295 } 7296 7297 static rfs4_chkseq_t 7298 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7299 { 7300 rfs4_chkseq_t rc; 7301 7302 rfs4_dbe_lock(op->ro_dbe); 7303 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7304 olo_seqid, resop, FALSE); 7305 rfs4_dbe_unlock(op->ro_dbe); 7306 7307 return (rc); 7308 } 7309 7310 static rfs4_chkseq_t 7311 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7312 { 7313 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7314 7315 rfs4_dbe_lock(lsp->rls_dbe); 7316 if (!lsp->rls_skip_seqid_check) 7317 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7318 resop, TRUE); 7319 rfs4_dbe_unlock(lsp->rls_dbe); 7320 7321 return (rc); 7322 } 7323 7324 static void 7325 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7326 struct svc_req *req, struct compound_state *cs) 7327 { 7328 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7329 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7330 open_owner4 *owner = &args->owner; 7331 open_claim_type4 claim = args->claim; 7332 rfs4_client_t *cp; 7333 rfs4_openowner_t *oo; 7334 bool_t create; 7335 bool_t replay = FALSE; 7336 int can_reclaim; 7337 7338 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7339 OPEN4args *, args); 7340 7341 if (cs->vp == NULL) { 7342 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7343 goto end; 7344 } 7345 7346 /* 7347 * Need to check clientid and lease expiration first based on 7348 * error ordering and incrementing sequence id. 7349 */ 7350 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7351 if (cp == NULL) { 7352 *cs->statusp = resp->status = 7353 rfs4_check_clientid(&owner->clientid, 0); 7354 goto end; 7355 } 7356 7357 if (rfs4_lease_expired(cp)) { 7358 rfs4_client_close(cp); 7359 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7360 goto end; 7361 } 7362 can_reclaim = cp->rc_can_reclaim; 7363 7364 /* 7365 * Find the open_owner for use from this point forward. Take 7366 * care in updating the sequence id based on the type of error 7367 * being returned. 7368 */ 7369 retry: 7370 create = TRUE; 7371 oo = rfs4_findopenowner(owner, &create, args->seqid); 7372 if (oo == NULL) { 7373 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 7374 rfs4_client_rele(cp); 7375 goto end; 7376 } 7377 7378 /* Hold off access to the sequence space while the open is done */ 7379 rfs4_sw_enter(&oo->ro_sw); 7380 7381 /* 7382 * If the open_owner existed before at the server, then check 7383 * the sequence id. 7384 */ 7385 if (!create && !oo->ro_postpone_confirm) { 7386 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7387 case NFS4_CHKSEQ_BAD: 7388 if ((args->seqid > oo->ro_open_seqid) && 7389 oo->ro_need_confirm) { 7390 rfs4_free_opens(oo, TRUE, FALSE); 7391 rfs4_sw_exit(&oo->ro_sw); 7392 rfs4_openowner_rele(oo); 7393 goto retry; 7394 } 7395 resp->status = NFS4ERR_BAD_SEQID; 7396 goto out; 7397 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7398 replay = TRUE; 7399 goto out; 7400 default: 7401 break; 7402 } 7403 7404 /* 7405 * Sequence was ok and open owner exists 7406 * check to see if we have yet to see an 7407 * open_confirm. 7408 */ 7409 if (oo->ro_need_confirm) { 7410 rfs4_free_opens(oo, TRUE, FALSE); 7411 rfs4_sw_exit(&oo->ro_sw); 7412 rfs4_openowner_rele(oo); 7413 goto retry; 7414 } 7415 } 7416 /* Grace only applies to regular-type OPENs */ 7417 if (rfs4_clnt_in_grace(cp) && 7418 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7419 *cs->statusp = resp->status = NFS4ERR_GRACE; 7420 goto out; 7421 } 7422 7423 /* 7424 * If previous state at the server existed then can_reclaim 7425 * will be set. If not reply NFS4ERR_NO_GRACE to the 7426 * client. 7427 */ 7428 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7429 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7430 goto out; 7431 } 7432 7433 7434 /* 7435 * Reject the open if the client has missed the grace period 7436 */ 7437 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7438 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7439 goto out; 7440 } 7441 7442 /* Couple of up-front bookkeeping items */ 7443 if (oo->ro_need_confirm) { 7444 /* 7445 * If this is a reclaim OPEN then we should not ask 7446 * for a confirmation of the open_owner per the 7447 * protocol specification. 7448 */ 7449 if (claim == CLAIM_PREVIOUS) 7450 oo->ro_need_confirm = FALSE; 7451 else 7452 resp->rflags |= OPEN4_RESULT_CONFIRM; 7453 } 7454 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7455 7456 /* 7457 * If there is an unshared filesystem mounted on this vnode, 7458 * do not allow to open/create in this directory. 7459 */ 7460 if (vn_ismntpt(cs->vp)) { 7461 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7462 goto out; 7463 } 7464 7465 /* 7466 * access must READ, WRITE, or BOTH. No access is invalid. 7467 * deny can be READ, WRITE, BOTH, or NONE. 7468 * bits not defined for access/deny are invalid. 7469 */ 7470 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7471 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7472 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7473 *cs->statusp = resp->status = NFS4ERR_INVAL; 7474 goto out; 7475 } 7476 7477 7478 /* 7479 * make sure attrset is zero before response is built. 7480 */ 7481 resp->attrset = 0; 7482 7483 switch (claim) { 7484 case CLAIM_NULL: 7485 rfs4_do_opennull(cs, req, args, oo, resp); 7486 break; 7487 case CLAIM_PREVIOUS: 7488 rfs4_do_openprev(cs, req, args, oo, resp); 7489 break; 7490 case CLAIM_DELEGATE_CUR: 7491 rfs4_do_opendelcur(cs, req, args, oo, resp); 7492 break; 7493 case CLAIM_DELEGATE_PREV: 7494 rfs4_do_opendelprev(cs, req, args, oo, resp); 7495 break; 7496 default: 7497 resp->status = NFS4ERR_INVAL; 7498 break; 7499 } 7500 7501 out: 7502 rfs4_client_rele(cp); 7503 7504 /* Catch sequence id handling here to make it a little easier */ 7505 switch (resp->status) { 7506 case NFS4ERR_BADXDR: 7507 case NFS4ERR_BAD_SEQID: 7508 case NFS4ERR_BAD_STATEID: 7509 case NFS4ERR_NOFILEHANDLE: 7510 case NFS4ERR_RESOURCE: 7511 case NFS4ERR_STALE_CLIENTID: 7512 case NFS4ERR_STALE_STATEID: 7513 /* 7514 * The protocol states that if any of these errors are 7515 * being returned, the sequence id should not be 7516 * incremented. Any other return requires an 7517 * increment. 7518 */ 7519 break; 7520 default: 7521 /* Always update the lease in this case */ 7522 rfs4_update_lease(oo->ro_client); 7523 7524 /* Regular response - copy the result */ 7525 if (!replay) 7526 rfs4_update_open_resp(oo, resop, &cs->fh); 7527 7528 /* 7529 * REPLAY case: Only if the previous response was OK 7530 * do we copy the filehandle. If not OK, no 7531 * filehandle to copy. 7532 */ 7533 if (replay == TRUE && 7534 resp->status == NFS4_OK && 7535 oo->ro_reply_fh.nfs_fh4_val) { 7536 /* 7537 * If this is a replay, we must restore the 7538 * current filehandle/vp to that of what was 7539 * returned originally. Try our best to do 7540 * it. 7541 */ 7542 nfs_fh4_fmt_t *fh_fmtp = 7543 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7544 7545 if (cs->exi != NULL) 7546 exi_rele(cs->exi); 7547 cs->exi = checkexport(&fh_fmtp->fh4_fsid, 7548 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7549 7550 if (cs->exi == NULL) { 7551 resp->status = NFS4ERR_STALE; 7552 goto finish; 7553 } 7554 7555 VN_RELE(cs->vp); 7556 7557 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7558 &resp->status); 7559 7560 if (cs->vp == NULL) 7561 goto finish; 7562 7563 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7564 } 7565 7566 /* 7567 * If this was a replay, no need to update the 7568 * sequence id. If the open_owner was not created on 7569 * this pass, then update. The first use of an 7570 * open_owner will not bump the sequence id. 7571 */ 7572 if (replay == FALSE && !create) 7573 rfs4_update_open_sequence(oo); 7574 /* 7575 * If the client is receiving an error and the 7576 * open_owner needs to be confirmed, there is no way 7577 * to notify the client of this fact ignoring the fact 7578 * that the server has no method of returning a 7579 * stateid to confirm. Therefore, the server needs to 7580 * mark this open_owner in a way as to avoid the 7581 * sequence id checking the next time the client uses 7582 * this open_owner. 7583 */ 7584 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7585 oo->ro_postpone_confirm = TRUE; 7586 /* 7587 * If OK response then clear the postpone flag and 7588 * reset the sequence id to keep in sync with the 7589 * client. 7590 */ 7591 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7592 oo->ro_postpone_confirm = FALSE; 7593 oo->ro_open_seqid = args->seqid; 7594 } 7595 break; 7596 } 7597 7598 finish: 7599 *cs->statusp = resp->status; 7600 7601 rfs4_sw_exit(&oo->ro_sw); 7602 rfs4_openowner_rele(oo); 7603 7604 end: 7605 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7606 OPEN4res *, resp); 7607 } 7608 7609 /*ARGSUSED*/ 7610 void 7611 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7612 struct svc_req *req, struct compound_state *cs) 7613 { 7614 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7615 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7616 rfs4_state_t *sp; 7617 nfsstat4 status; 7618 7619 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7620 OPEN_CONFIRM4args *, args); 7621 7622 if (cs->vp == NULL) { 7623 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7624 goto out; 7625 } 7626 7627 if (cs->vp->v_type != VREG) { 7628 *cs->statusp = resp->status = 7629 cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL; 7630 return; 7631 } 7632 7633 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7634 if (status != NFS4_OK) { 7635 *cs->statusp = resp->status = status; 7636 goto out; 7637 } 7638 7639 /* Ensure specified filehandle matches */ 7640 if (cs->vp != sp->rs_finfo->rf_vp) { 7641 rfs4_state_rele(sp); 7642 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7643 goto out; 7644 } 7645 7646 /* hold off other access to open_owner while we tinker */ 7647 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7648 7649 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7650 case NFS4_CHECK_STATEID_OKAY: 7651 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7652 resop) != 0) { 7653 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7654 break; 7655 } 7656 /* 7657 * If it is the appropriate stateid and determined to 7658 * be "OKAY" then this means that the stateid does not 7659 * need to be confirmed and the client is in error for 7660 * sending an OPEN_CONFIRM. 7661 */ 7662 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7663 break; 7664 case NFS4_CHECK_STATEID_OLD: 7665 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7666 break; 7667 case NFS4_CHECK_STATEID_BAD: 7668 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7669 break; 7670 case NFS4_CHECK_STATEID_EXPIRED: 7671 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7672 break; 7673 case NFS4_CHECK_STATEID_CLOSED: 7674 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7675 break; 7676 case NFS4_CHECK_STATEID_REPLAY: 7677 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7678 resop)) { 7679 case NFS4_CHKSEQ_OKAY: 7680 /* 7681 * This is replayed stateid; if seqid matches 7682 * next expected, then client is using wrong seqid. 7683 */ 7684 /* fall through */ 7685 case NFS4_CHKSEQ_BAD: 7686 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7687 break; 7688 case NFS4_CHKSEQ_REPLAY: 7689 /* 7690 * Note this case is the duplicate case so 7691 * resp->status is already set. 7692 */ 7693 *cs->statusp = resp->status; 7694 rfs4_update_lease(sp->rs_owner->ro_client); 7695 break; 7696 } 7697 break; 7698 case NFS4_CHECK_STATEID_UNCONFIRMED: 7699 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7700 resop) != NFS4_CHKSEQ_OKAY) { 7701 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7702 break; 7703 } 7704 *cs->statusp = resp->status = NFS4_OK; 7705 7706 next_stateid(&sp->rs_stateid); 7707 resp->open_stateid = sp->rs_stateid.stateid; 7708 sp->rs_owner->ro_need_confirm = FALSE; 7709 rfs4_update_lease(sp->rs_owner->ro_client); 7710 rfs4_update_open_sequence(sp->rs_owner); 7711 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7712 break; 7713 default: 7714 ASSERT(FALSE); 7715 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7716 break; 7717 } 7718 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7719 rfs4_state_rele(sp); 7720 7721 out: 7722 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7723 OPEN_CONFIRM4res *, resp); 7724 } 7725 7726 /*ARGSUSED*/ 7727 void 7728 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7729 struct svc_req *req, struct compound_state *cs) 7730 { 7731 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7732 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7733 uint32_t access = args->share_access; 7734 uint32_t deny = args->share_deny; 7735 nfsstat4 status; 7736 rfs4_state_t *sp; 7737 rfs4_file_t *fp; 7738 int fflags = 0; 7739 7740 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7741 OPEN_DOWNGRADE4args *, args); 7742 7743 if (cs->vp == NULL) { 7744 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7745 goto out; 7746 } 7747 7748 if (cs->vp->v_type != VREG) { 7749 *cs->statusp = resp->status = NFS4ERR_INVAL; 7750 return; 7751 } 7752 7753 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7754 if (status != NFS4_OK) { 7755 *cs->statusp = resp->status = status; 7756 goto out; 7757 } 7758 7759 /* Ensure specified filehandle matches */ 7760 if (cs->vp != sp->rs_finfo->rf_vp) { 7761 rfs4_state_rele(sp); 7762 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7763 goto out; 7764 } 7765 7766 /* hold off other access to open_owner while we tinker */ 7767 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7768 7769 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7770 case NFS4_CHECK_STATEID_OKAY: 7771 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7772 resop) != NFS4_CHKSEQ_OKAY) { 7773 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7774 goto end; 7775 } 7776 break; 7777 case NFS4_CHECK_STATEID_OLD: 7778 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7779 goto end; 7780 case NFS4_CHECK_STATEID_BAD: 7781 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7782 goto end; 7783 case NFS4_CHECK_STATEID_EXPIRED: 7784 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7785 goto end; 7786 case NFS4_CHECK_STATEID_CLOSED: 7787 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7788 goto end; 7789 case NFS4_CHECK_STATEID_UNCONFIRMED: 7790 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7791 goto end; 7792 case NFS4_CHECK_STATEID_REPLAY: 7793 /* Check the sequence id for the open owner */ 7794 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7795 resop)) { 7796 case NFS4_CHKSEQ_OKAY: 7797 /* 7798 * This is replayed stateid; if seqid matches 7799 * next expected, then client is using wrong seqid. 7800 */ 7801 /* fall through */ 7802 case NFS4_CHKSEQ_BAD: 7803 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7804 goto end; 7805 case NFS4_CHKSEQ_REPLAY: 7806 /* 7807 * Note this case is the duplicate case so 7808 * resp->status is already set. 7809 */ 7810 *cs->statusp = resp->status; 7811 rfs4_update_lease(sp->rs_owner->ro_client); 7812 goto end; 7813 } 7814 break; 7815 default: 7816 ASSERT(FALSE); 7817 break; 7818 } 7819 7820 rfs4_dbe_lock(sp->rs_dbe); 7821 /* 7822 * Check that the new access modes and deny modes are valid. 7823 * Check that no invalid bits are set. 7824 */ 7825 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7826 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7827 *cs->statusp = resp->status = NFS4ERR_INVAL; 7828 rfs4_update_open_sequence(sp->rs_owner); 7829 rfs4_dbe_unlock(sp->rs_dbe); 7830 goto end; 7831 } 7832 7833 /* 7834 * The new modes must be a subset of the current modes and 7835 * the access must specify at least one mode. To test that 7836 * the new mode is a subset of the current modes we bitwise 7837 * AND them together and check that the result equals the new 7838 * mode. For example: 7839 * New mode, access == R and current mode, sp->rs_open_access == RW 7840 * access & sp->rs_open_access == R == access, so the new access mode 7841 * is valid. Consider access == RW, sp->rs_open_access = R 7842 * access & sp->rs_open_access == R != access, so the new access mode 7843 * is invalid. 7844 */ 7845 if ((access & sp->rs_open_access) != access || 7846 (deny & sp->rs_open_deny) != deny || 7847 (access & 7848 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7849 *cs->statusp = resp->status = NFS4ERR_INVAL; 7850 rfs4_update_open_sequence(sp->rs_owner); 7851 rfs4_dbe_unlock(sp->rs_dbe); 7852 goto end; 7853 } 7854 7855 /* 7856 * Release any share locks associated with this stateID. 7857 * Strictly speaking, this violates the spec because the 7858 * spec effectively requires that open downgrade be atomic. 7859 * At present, fs_shrlock does not have this capability. 7860 */ 7861 (void) rfs4_unshare(sp); 7862 7863 status = rfs4_share(sp, access, deny); 7864 if (status != NFS4_OK) { 7865 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7866 rfs4_update_open_sequence(sp->rs_owner); 7867 rfs4_dbe_unlock(sp->rs_dbe); 7868 goto end; 7869 } 7870 7871 fp = sp->rs_finfo; 7872 rfs4_dbe_lock(fp->rf_dbe); 7873 7874 /* 7875 * If the current mode has deny read and the new mode 7876 * does not, decrement the number of deny read mode bits 7877 * and if it goes to zero turn off the deny read bit 7878 * on the file. 7879 */ 7880 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7881 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7882 fp->rf_deny_read--; 7883 if (fp->rf_deny_read == 0) 7884 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 7885 } 7886 7887 /* 7888 * If the current mode has deny write and the new mode 7889 * does not, decrement the number of deny write mode bits 7890 * and if it goes to zero turn off the deny write bit 7891 * on the file. 7892 */ 7893 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 7894 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 7895 fp->rf_deny_write--; 7896 if (fp->rf_deny_write == 0) 7897 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 7898 } 7899 7900 /* 7901 * If the current mode has access read and the new mode 7902 * does not, decrement the number of access read mode bits 7903 * and if it goes to zero turn off the access read bit 7904 * on the file. set fflags to FREAD for the call to 7905 * vn_open_downgrade(). 7906 */ 7907 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 7908 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 7909 fp->rf_access_read--; 7910 if (fp->rf_access_read == 0) 7911 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 7912 fflags |= FREAD; 7913 } 7914 7915 /* 7916 * If the current mode has access write and the new mode 7917 * does not, decrement the number of access write mode bits 7918 * and if it goes to zero turn off the access write bit 7919 * on the file. set fflags to FWRITE for the call to 7920 * vn_open_downgrade(). 7921 */ 7922 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 7923 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 7924 fp->rf_access_write--; 7925 if (fp->rf_access_write == 0) 7926 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 7927 fflags |= FWRITE; 7928 } 7929 7930 /* Check that the file is still accessible */ 7931 ASSERT(fp->rf_share_access); 7932 7933 rfs4_dbe_unlock(fp->rf_dbe); 7934 7935 /* now set the new open access and deny modes */ 7936 sp->rs_open_access = access; 7937 sp->rs_open_deny = deny; 7938 7939 /* 7940 * we successfully downgraded the share lock, now we need to downgrade 7941 * the open. it is possible that the downgrade was only for a deny 7942 * mode and we have nothing else to do. 7943 */ 7944 if ((fflags & (FREAD|FWRITE)) != 0) 7945 vn_open_downgrade(cs->vp, fflags); 7946 7947 /* Update the stateid */ 7948 next_stateid(&sp->rs_stateid); 7949 resp->open_stateid = sp->rs_stateid.stateid; 7950 7951 rfs4_dbe_unlock(sp->rs_dbe); 7952 7953 *cs->statusp = resp->status = NFS4_OK; 7954 /* Update the lease */ 7955 rfs4_update_lease(sp->rs_owner->ro_client); 7956 /* And the sequence */ 7957 rfs4_update_open_sequence(sp->rs_owner); 7958 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7959 7960 end: 7961 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7962 rfs4_state_rele(sp); 7963 out: 7964 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 7965 OPEN_DOWNGRADE4res *, resp); 7966 } 7967 7968 static void * 7969 memstr(const void *s1, const char *s2, size_t n) 7970 { 7971 size_t l = strlen(s2); 7972 char *p = (char *)s1; 7973 7974 while (n >= l) { 7975 if (bcmp(p, s2, l) == 0) 7976 return (p); 7977 p++; 7978 n--; 7979 } 7980 7981 return (NULL); 7982 } 7983 7984 /* 7985 * The logic behind this function is detailed in the NFSv4 RFC in the 7986 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 7987 * that section for explicit guidance to server behavior for 7988 * SETCLIENTID. 7989 */ 7990 void 7991 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 7992 struct svc_req *req, struct compound_state *cs) 7993 { 7994 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 7995 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 7996 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 7997 rfs4_clntip_t *ci; 7998 bool_t create; 7999 char *addr, *netid; 8000 int len; 8001 8002 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 8003 SETCLIENTID4args *, args); 8004 retry: 8005 newcp = cp_confirmed = cp_unconfirmed = NULL; 8006 8007 /* 8008 * Save the caller's IP address 8009 */ 8010 args->client.cl_addr = 8011 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 8012 8013 /* 8014 * Record if it is a Solaris client that cannot handle referrals. 8015 */ 8016 if (memstr(args->client.id_val, "Solaris", args->client.id_len) && 8017 !memstr(args->client.id_val, "+referrals", args->client.id_len)) { 8018 /* Add a "yes, it's downrev" record */ 8019 create = TRUE; 8020 ci = rfs4_find_clntip(args->client.cl_addr, &create); 8021 ASSERT(ci != NULL); 8022 rfs4_dbe_rele(ci->ri_dbe); 8023 } else { 8024 /* Remove any previous record */ 8025 rfs4_invalidate_clntip(args->client.cl_addr); 8026 } 8027 8028 /* 8029 * In search of an EXISTING client matching the incoming 8030 * request to establish a new client identifier at the server 8031 */ 8032 create = TRUE; 8033 cp = rfs4_findclient(&args->client, &create, NULL); 8034 8035 /* Should never happen */ 8036 ASSERT(cp != NULL); 8037 8038 if (cp == NULL) { 8039 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8040 goto out; 8041 } 8042 8043 /* 8044 * Easiest case. Client identifier is newly created and is 8045 * unconfirmed. Also note that for this case, no other 8046 * entries exist for the client identifier. Nothing else to 8047 * check. Just setup the response and respond. 8048 */ 8049 if (create) { 8050 *cs->statusp = res->status = NFS4_OK; 8051 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 8052 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8053 cp->rc_confirm_verf; 8054 /* Setup callback information; CB_NULL confirmation later */ 8055 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 8056 8057 rfs4_client_rele(cp); 8058 goto out; 8059 } 8060 8061 /* 8062 * An existing, confirmed client may exist but it may not have 8063 * been active for at least one lease period. If so, then 8064 * "close" the client and create a new client identifier 8065 */ 8066 if (rfs4_lease_expired(cp)) { 8067 rfs4_client_close(cp); 8068 goto retry; 8069 } 8070 8071 if (cp->rc_need_confirm == TRUE) 8072 cp_unconfirmed = cp; 8073 else 8074 cp_confirmed = cp; 8075 8076 cp = NULL; 8077 8078 /* 8079 * We have a confirmed client, now check for an 8080 * unconfimred entry 8081 */ 8082 if (cp_confirmed) { 8083 /* If creds don't match then client identifier is inuse */ 8084 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 8085 rfs4_cbinfo_t *cbp; 8086 /* 8087 * Some one else has established this client 8088 * id. Try and say * who they are. We will use 8089 * the call back address supplied by * the 8090 * first client. 8091 */ 8092 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8093 8094 addr = netid = NULL; 8095 8096 cbp = &cp_confirmed->rc_cbinfo; 8097 if (cbp->cb_callback.cb_location.r_addr && 8098 cbp->cb_callback.cb_location.r_netid) { 8099 cb_client4 *cbcp = &cbp->cb_callback; 8100 8101 len = strlen(cbcp->cb_location.r_addr)+1; 8102 addr = kmem_alloc(len, KM_SLEEP); 8103 bcopy(cbcp->cb_location.r_addr, addr, len); 8104 len = strlen(cbcp->cb_location.r_netid)+1; 8105 netid = kmem_alloc(len, KM_SLEEP); 8106 bcopy(cbcp->cb_location.r_netid, netid, len); 8107 } 8108 8109 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8110 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8111 8112 rfs4_client_rele(cp_confirmed); 8113 } 8114 8115 /* 8116 * Confirmed, creds match, and verifier matches; must 8117 * be an update of the callback info 8118 */ 8119 if (cp_confirmed->rc_nfs_client.verifier == 8120 args->client.verifier) { 8121 /* Setup callback information */ 8122 rfs4_client_setcb(cp_confirmed, &args->callback, 8123 args->callback_ident); 8124 8125 /* everything okay -- move ahead */ 8126 *cs->statusp = res->status = NFS4_OK; 8127 res->SETCLIENTID4res_u.resok4.clientid = 8128 cp_confirmed->rc_clientid; 8129 8130 /* update the confirm_verifier and return it */ 8131 rfs4_client_scv_next(cp_confirmed); 8132 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8133 cp_confirmed->rc_confirm_verf; 8134 8135 rfs4_client_rele(cp_confirmed); 8136 goto out; 8137 } 8138 8139 /* 8140 * Creds match but the verifier doesn't. Must search 8141 * for an unconfirmed client that would be replaced by 8142 * this request. 8143 */ 8144 create = FALSE; 8145 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8146 cp_confirmed); 8147 } 8148 8149 /* 8150 * At this point, we have taken care of the brand new client 8151 * struct, INUSE case, update of an existing, and confirmed 8152 * client struct. 8153 */ 8154 8155 /* 8156 * check to see if things have changed while we originally 8157 * picked up the client struct. If they have, then return and 8158 * retry the processing of this SETCLIENTID request. 8159 */ 8160 if (cp_unconfirmed) { 8161 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8162 if (!cp_unconfirmed->rc_need_confirm) { 8163 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8164 rfs4_client_rele(cp_unconfirmed); 8165 if (cp_confirmed) 8166 rfs4_client_rele(cp_confirmed); 8167 goto retry; 8168 } 8169 /* do away with the old unconfirmed one */ 8170 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8171 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8172 rfs4_client_rele(cp_unconfirmed); 8173 cp_unconfirmed = NULL; 8174 } 8175 8176 /* 8177 * This search will temporarily hide the confirmed client 8178 * struct while a new client struct is created as the 8179 * unconfirmed one. 8180 */ 8181 create = TRUE; 8182 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8183 8184 ASSERT(newcp != NULL); 8185 8186 if (newcp == NULL) { 8187 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8188 rfs4_client_rele(cp_confirmed); 8189 goto out; 8190 } 8191 8192 /* 8193 * If one was not created, then a similar request must be in 8194 * process so release and start over with this one 8195 */ 8196 if (create != TRUE) { 8197 rfs4_client_rele(newcp); 8198 if (cp_confirmed) 8199 rfs4_client_rele(cp_confirmed); 8200 goto retry; 8201 } 8202 8203 *cs->statusp = res->status = NFS4_OK; 8204 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8205 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8206 newcp->rc_confirm_verf; 8207 /* Setup callback information; CB_NULL confirmation later */ 8208 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8209 8210 newcp->rc_cp_confirmed = cp_confirmed; 8211 8212 rfs4_client_rele(newcp); 8213 8214 out: 8215 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8216 SETCLIENTID4res *, res); 8217 } 8218 8219 /*ARGSUSED*/ 8220 void 8221 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8222 struct svc_req *req, struct compound_state *cs) 8223 { 8224 SETCLIENTID_CONFIRM4args *args = 8225 &argop->nfs_argop4_u.opsetclientid_confirm; 8226 SETCLIENTID_CONFIRM4res *res = 8227 &resop->nfs_resop4_u.opsetclientid_confirm; 8228 rfs4_client_t *cp, *cptoclose = NULL; 8229 8230 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8231 struct compound_state *, cs, 8232 SETCLIENTID_CONFIRM4args *, args); 8233 8234 *cs->statusp = res->status = NFS4_OK; 8235 8236 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8237 8238 if (cp == NULL) { 8239 *cs->statusp = res->status = 8240 rfs4_check_clientid(&args->clientid, 1); 8241 goto out; 8242 } 8243 8244 if (!creds_ok(cp, req, cs)) { 8245 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8246 rfs4_client_rele(cp); 8247 goto out; 8248 } 8249 8250 /* If the verifier doesn't match, the record doesn't match */ 8251 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8252 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8253 rfs4_client_rele(cp); 8254 goto out; 8255 } 8256 8257 rfs4_dbe_lock(cp->rc_dbe); 8258 cp->rc_need_confirm = FALSE; 8259 if (cp->rc_cp_confirmed) { 8260 cptoclose = cp->rc_cp_confirmed; 8261 cptoclose->rc_ss_remove = 1; 8262 cp->rc_cp_confirmed = NULL; 8263 } 8264 8265 /* 8266 * Update the client's associated server instance, if it's changed 8267 * since the client was created. 8268 */ 8269 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8270 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8271 8272 /* 8273 * Record clientid in stable storage. 8274 * Must be done after server instance has been assigned. 8275 */ 8276 rfs4_ss_clid(cp); 8277 8278 rfs4_dbe_unlock(cp->rc_dbe); 8279 8280 if (cptoclose) 8281 /* don't need to rele, client_close does it */ 8282 rfs4_client_close(cptoclose); 8283 8284 /* If needed, initiate CB_NULL call for callback path */ 8285 rfs4_deleg_cb_check(cp); 8286 rfs4_update_lease(cp); 8287 8288 /* 8289 * Check to see if client can perform reclaims 8290 */ 8291 rfs4_ss_chkclid(cp); 8292 8293 rfs4_client_rele(cp); 8294 8295 out: 8296 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8297 struct compound_state *, cs, 8298 SETCLIENTID_CONFIRM4 *, res); 8299 } 8300 8301 8302 /*ARGSUSED*/ 8303 void 8304 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8305 struct svc_req *req, struct compound_state *cs) 8306 { 8307 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8308 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8309 rfs4_state_t *sp; 8310 nfsstat4 status; 8311 8312 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8313 CLOSE4args *, args); 8314 8315 if (cs->vp == NULL) { 8316 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8317 goto out; 8318 } 8319 8320 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8321 if (status != NFS4_OK) { 8322 *cs->statusp = resp->status = status; 8323 goto out; 8324 } 8325 8326 /* Ensure specified filehandle matches */ 8327 if (cs->vp != sp->rs_finfo->rf_vp) { 8328 rfs4_state_rele(sp); 8329 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8330 goto out; 8331 } 8332 8333 /* hold off other access to open_owner while we tinker */ 8334 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8335 8336 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8337 case NFS4_CHECK_STATEID_OKAY: 8338 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8339 resop) != NFS4_CHKSEQ_OKAY) { 8340 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8341 goto end; 8342 } 8343 break; 8344 case NFS4_CHECK_STATEID_OLD: 8345 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8346 goto end; 8347 case NFS4_CHECK_STATEID_BAD: 8348 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8349 goto end; 8350 case NFS4_CHECK_STATEID_EXPIRED: 8351 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8352 goto end; 8353 case NFS4_CHECK_STATEID_CLOSED: 8354 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8355 goto end; 8356 case NFS4_CHECK_STATEID_UNCONFIRMED: 8357 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8358 goto end; 8359 case NFS4_CHECK_STATEID_REPLAY: 8360 /* Check the sequence id for the open owner */ 8361 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8362 resop)) { 8363 case NFS4_CHKSEQ_OKAY: 8364 /* 8365 * This is replayed stateid; if seqid matches 8366 * next expected, then client is using wrong seqid. 8367 */ 8368 /* FALL THROUGH */ 8369 case NFS4_CHKSEQ_BAD: 8370 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8371 goto end; 8372 case NFS4_CHKSEQ_REPLAY: 8373 /* 8374 * Note this case is the duplicate case so 8375 * resp->status is already set. 8376 */ 8377 *cs->statusp = resp->status; 8378 rfs4_update_lease(sp->rs_owner->ro_client); 8379 goto end; 8380 } 8381 break; 8382 default: 8383 ASSERT(FALSE); 8384 break; 8385 } 8386 8387 rfs4_dbe_lock(sp->rs_dbe); 8388 8389 /* Update the stateid. */ 8390 next_stateid(&sp->rs_stateid); 8391 resp->open_stateid = sp->rs_stateid.stateid; 8392 8393 rfs4_dbe_unlock(sp->rs_dbe); 8394 8395 rfs4_update_lease(sp->rs_owner->ro_client); 8396 rfs4_update_open_sequence(sp->rs_owner); 8397 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8398 8399 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8400 8401 *cs->statusp = resp->status = status; 8402 8403 end: 8404 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8405 rfs4_state_rele(sp); 8406 out: 8407 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8408 CLOSE4res *, resp); 8409 } 8410 8411 /* 8412 * Manage the counts on the file struct and close all file locks 8413 */ 8414 /*ARGSUSED*/ 8415 void 8416 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8417 bool_t close_of_client) 8418 { 8419 rfs4_file_t *fp = sp->rs_finfo; 8420 rfs4_lo_state_t *lsp; 8421 int fflags = 0; 8422 8423 /* 8424 * If this call is part of the larger closing down of client 8425 * state then it is just easier to release all locks 8426 * associated with this client instead of going through each 8427 * individual file and cleaning locks there. 8428 */ 8429 if (close_of_client) { 8430 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8431 !list_is_empty(&sp->rs_lostatelist) && 8432 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8433 /* Is the PxFS kernel module loaded? */ 8434 if (lm_remove_file_locks != NULL) { 8435 int new_sysid; 8436 8437 /* Encode the cluster nodeid in new sysid */ 8438 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8439 lm_set_nlmid_flk(&new_sysid); 8440 8441 /* 8442 * This PxFS routine removes file locks for a 8443 * client over all nodes of a cluster. 8444 */ 8445 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8446 "lm_remove_file_locks(sysid=0x%x)\n", 8447 new_sysid)); 8448 (*lm_remove_file_locks)(new_sysid); 8449 } else { 8450 struct flock64 flk; 8451 8452 /* Release all locks for this client */ 8453 flk.l_type = F_UNLKSYS; 8454 flk.l_whence = 0; 8455 flk.l_start = 0; 8456 flk.l_len = 0; 8457 flk.l_sysid = 8458 sp->rs_owner->ro_client->rc_sysidt; 8459 flk.l_pid = 0; 8460 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8461 &flk, F_REMOTELOCK | FREAD | FWRITE, 8462 (u_offset_t)0, NULL, CRED(), NULL); 8463 } 8464 8465 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8466 } 8467 } 8468 8469 /* 8470 * Release all locks on this file by this lock owner or at 8471 * least mark the locks as having been released 8472 */ 8473 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8474 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8475 lsp->rls_locks_cleaned = TRUE; 8476 8477 /* Was this already taken care of above? */ 8478 if (!close_of_client && 8479 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8480 (void) cleanlocks(sp->rs_finfo->rf_vp, 8481 lsp->rls_locker->rl_pid, 8482 lsp->rls_locker->rl_client->rc_sysidt); 8483 } 8484 8485 /* 8486 * Release any shrlocks associated with this open state ID. 8487 * This must be done before the rfs4_state gets marked closed. 8488 */ 8489 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8490 (void) rfs4_unshare(sp); 8491 8492 if (sp->rs_open_access) { 8493 rfs4_dbe_lock(fp->rf_dbe); 8494 8495 /* 8496 * Decrement the count for each access and deny bit that this 8497 * state has contributed to the file. 8498 * If the file counts go to zero 8499 * clear the appropriate bit in the appropriate mask. 8500 */ 8501 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8502 fp->rf_access_read--; 8503 fflags |= FREAD; 8504 if (fp->rf_access_read == 0) 8505 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8506 } 8507 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8508 fp->rf_access_write--; 8509 fflags |= FWRITE; 8510 if (fp->rf_access_write == 0) 8511 fp->rf_share_access &= 8512 ~OPEN4_SHARE_ACCESS_WRITE; 8513 } 8514 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8515 fp->rf_deny_read--; 8516 if (fp->rf_deny_read == 0) 8517 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8518 } 8519 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8520 fp->rf_deny_write--; 8521 if (fp->rf_deny_write == 0) 8522 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8523 } 8524 8525 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8526 8527 rfs4_dbe_unlock(fp->rf_dbe); 8528 8529 sp->rs_open_access = 0; 8530 sp->rs_open_deny = 0; 8531 } 8532 } 8533 8534 /* 8535 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8536 */ 8537 static nfsstat4 8538 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8539 { 8540 rfs4_lockowner_t *lo; 8541 rfs4_client_t *cp; 8542 uint32_t len; 8543 8544 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8545 if (lo != NULL) { 8546 cp = lo->rl_client; 8547 if (rfs4_lease_expired(cp)) { 8548 rfs4_lockowner_rele(lo); 8549 rfs4_dbe_hold(cp->rc_dbe); 8550 rfs4_client_close(cp); 8551 return (NFS4ERR_EXPIRED); 8552 } 8553 dp->owner.clientid = lo->rl_owner.clientid; 8554 len = lo->rl_owner.owner_len; 8555 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8556 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8557 dp->owner.owner_len = len; 8558 rfs4_lockowner_rele(lo); 8559 goto finish; 8560 } 8561 8562 /* 8563 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8564 * of the client id contain the boot time for a NFS4 lock. So we 8565 * fabricate and identity by setting clientid to the sysid, and 8566 * the lock owner to the pid. 8567 */ 8568 dp->owner.clientid = flk->l_sysid; 8569 len = sizeof (pid_t); 8570 dp->owner.owner_len = len; 8571 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8572 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8573 finish: 8574 dp->offset = flk->l_start; 8575 dp->length = flk->l_len; 8576 8577 if (flk->l_type == F_RDLCK) 8578 dp->locktype = READ_LT; 8579 else if (flk->l_type == F_WRLCK) 8580 dp->locktype = WRITE_LT; 8581 else 8582 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8583 8584 return (NFS4_OK); 8585 } 8586 8587 /* 8588 * The NFSv4.0 LOCK operation does not support the blocking lock (at the 8589 * NFSv4.0 protocol level) so the client needs to resend the LOCK request in a 8590 * case the lock is denied by the NFSv4.0 server. NFSv4.0 clients are prepared 8591 * for that (obviously); they are sending the LOCK requests with some delays 8592 * between the attempts. See nfs4frlock() and nfs4_block_and_wait() for the 8593 * locking and delay implementation at the client side. 8594 * 8595 * To make the life of the clients easier, the NFSv4.0 server tries to do some 8596 * fast retries on its own (the for loop below) in a hope the lock will be 8597 * available soon. And if not, the client won't need to resend the LOCK 8598 * requests so fast to check the lock availability. This basically saves some 8599 * network traffic and tries to make sure the client gets the lock ASAP. 8600 */ 8601 static int 8602 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8603 { 8604 int error; 8605 struct flock64 flk; 8606 int i; 8607 clock_t delaytime; 8608 int cmd; 8609 int spin_cnt = 0; 8610 8611 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8612 retry: 8613 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8614 8615 for (i = 0; i < rfs4_maxlock_tries; i++) { 8616 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8617 error = VOP_FRLOCK(vp, cmd, 8618 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8619 8620 if (error != EAGAIN && error != EACCES) 8621 break; 8622 8623 if (i < rfs4_maxlock_tries - 1) { 8624 delay(delaytime); 8625 delaytime *= 2; 8626 } 8627 } 8628 8629 if (error == EAGAIN || error == EACCES) { 8630 /* Get the owner of the lock */ 8631 flk = *flock; 8632 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8633 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 0, NULL, cred, 8634 NULL) == 0) { 8635 /* 8636 * There's a race inherent in the current VOP_FRLOCK 8637 * design where: 8638 * a: "other guy" takes a lock that conflicts with a 8639 * lock we want 8640 * b: we attempt to take our lock (non-blocking) and 8641 * the attempt fails. 8642 * c: "other guy" releases the conflicting lock 8643 * d: we ask what lock conflicts with the lock we want, 8644 * getting F_UNLCK (no lock blocks us) 8645 * 8646 * If we retry the non-blocking lock attempt in this 8647 * case (restart at step 'b') there's some possibility 8648 * that many such attempts might fail. However a test 8649 * designed to actually provoke this race shows that 8650 * the vast majority of cases require no retry, and 8651 * only a few took as many as three retries. Here's 8652 * the test outcome: 8653 * 8654 * number of retries how many times we needed 8655 * that many retries 8656 * 0 79461 8657 * 1 862 8658 * 2 49 8659 * 3 5 8660 * 8661 * Given those empirical results, we arbitrarily limit 8662 * the retry count to ten. 8663 * 8664 * If we actually make to ten retries and give up, 8665 * nothing catastrophic happens, but we're unable to 8666 * return the information about the conflicting lock to 8667 * the NFS client. That's an acceptable trade off vs. 8668 * letting this retry loop run forever. 8669 */ 8670 if (flk.l_type == F_UNLCK) { 8671 if (spin_cnt++ < 10) { 8672 /* No longer locked, retry */ 8673 goto retry; 8674 } 8675 } else { 8676 *flock = flk; 8677 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8678 F_GETLK, &flk); 8679 } 8680 } 8681 } 8682 8683 return (error); 8684 } 8685 8686 /*ARGSUSED*/ 8687 static nfsstat4 8688 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8689 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8690 { 8691 nfsstat4 status; 8692 rfs4_lockowner_t *lo = lsp->rls_locker; 8693 rfs4_state_t *sp = lsp->rls_state; 8694 struct flock64 flock; 8695 int16_t ltype; 8696 int flag; 8697 int error; 8698 sysid_t sysid; 8699 LOCK4res *lres; 8700 vnode_t *vp; 8701 8702 if (rfs4_lease_expired(lo->rl_client)) { 8703 return (NFS4ERR_EXPIRED); 8704 } 8705 8706 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8707 return (status); 8708 8709 /* Check for zero length. To lock to end of file use all ones for V4 */ 8710 if (length == 0) 8711 return (NFS4ERR_INVAL); 8712 else if (length == (length4)(~0)) 8713 length = 0; /* Posix to end of file */ 8714 8715 retry: 8716 rfs4_dbe_lock(sp->rs_dbe); 8717 if (sp->rs_closed == TRUE) { 8718 rfs4_dbe_unlock(sp->rs_dbe); 8719 return (NFS4ERR_OLD_STATEID); 8720 } 8721 8722 if (resop->resop != OP_LOCKU) { 8723 switch (locktype) { 8724 case READ_LT: 8725 case READW_LT: 8726 if ((sp->rs_share_access 8727 & OPEN4_SHARE_ACCESS_READ) == 0) { 8728 rfs4_dbe_unlock(sp->rs_dbe); 8729 8730 return (NFS4ERR_OPENMODE); 8731 } 8732 ltype = F_RDLCK; 8733 break; 8734 case WRITE_LT: 8735 case WRITEW_LT: 8736 if ((sp->rs_share_access 8737 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8738 rfs4_dbe_unlock(sp->rs_dbe); 8739 8740 return (NFS4ERR_OPENMODE); 8741 } 8742 ltype = F_WRLCK; 8743 break; 8744 } 8745 } else 8746 ltype = F_UNLCK; 8747 8748 flock.l_type = ltype; 8749 flock.l_whence = 0; /* SEEK_SET */ 8750 flock.l_start = offset; 8751 flock.l_len = length; 8752 flock.l_sysid = sysid; 8753 flock.l_pid = lsp->rls_locker->rl_pid; 8754 8755 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8756 if (flock.l_len < 0 || flock.l_start < 0) { 8757 rfs4_dbe_unlock(sp->rs_dbe); 8758 return (NFS4ERR_INVAL); 8759 } 8760 8761 /* 8762 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8763 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8764 */ 8765 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8766 8767 vp = sp->rs_finfo->rf_vp; 8768 VN_HOLD(vp); 8769 8770 /* 8771 * We need to unlock sp before we call the underlying filesystem to 8772 * acquire the file lock. 8773 */ 8774 rfs4_dbe_unlock(sp->rs_dbe); 8775 8776 error = setlock(vp, &flock, flag, cred); 8777 8778 /* 8779 * Make sure the file is still open. In a case the file was closed in 8780 * the meantime, clean the lock we acquired using the setlock() call 8781 * above, and return the appropriate error. 8782 */ 8783 rfs4_dbe_lock(sp->rs_dbe); 8784 if (sp->rs_closed == TRUE) { 8785 cleanlocks(vp, lsp->rls_locker->rl_pid, sysid); 8786 rfs4_dbe_unlock(sp->rs_dbe); 8787 8788 VN_RELE(vp); 8789 8790 return (NFS4ERR_OLD_STATEID); 8791 } 8792 rfs4_dbe_unlock(sp->rs_dbe); 8793 8794 VN_RELE(vp); 8795 8796 if (error == 0) { 8797 rfs4_dbe_lock(lsp->rls_dbe); 8798 next_stateid(&lsp->rls_lockid); 8799 rfs4_dbe_unlock(lsp->rls_dbe); 8800 } 8801 8802 /* 8803 * N.B. We map error values to nfsv4 errors. This is differrent 8804 * than puterrno4 routine. 8805 */ 8806 switch (error) { 8807 case 0: 8808 status = NFS4_OK; 8809 break; 8810 case EAGAIN: 8811 case EACCES: /* Old value */ 8812 /* Can only get here if op is OP_LOCK */ 8813 ASSERT(resop->resop == OP_LOCK); 8814 lres = &resop->nfs_resop4_u.oplock; 8815 status = NFS4ERR_DENIED; 8816 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8817 == NFS4ERR_EXPIRED) 8818 goto retry; 8819 break; 8820 case ENOLCK: 8821 status = NFS4ERR_DELAY; 8822 break; 8823 case EOVERFLOW: 8824 status = NFS4ERR_INVAL; 8825 break; 8826 case EINVAL: 8827 status = NFS4ERR_NOTSUPP; 8828 break; 8829 default: 8830 status = NFS4ERR_SERVERFAULT; 8831 break; 8832 } 8833 8834 return (status); 8835 } 8836 8837 /*ARGSUSED*/ 8838 void 8839 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8840 struct svc_req *req, struct compound_state *cs) 8841 { 8842 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8843 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8844 nfsstat4 status; 8845 stateid4 *stateid; 8846 rfs4_lockowner_t *lo; 8847 rfs4_client_t *cp; 8848 rfs4_state_t *sp = NULL; 8849 rfs4_lo_state_t *lsp = NULL; 8850 bool_t ls_sw_held = FALSE; 8851 bool_t create = TRUE; 8852 bool_t lcreate = TRUE; 8853 bool_t dup_lock = FALSE; 8854 int rc; 8855 8856 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8857 LOCK4args *, args); 8858 8859 if (cs->vp == NULL) { 8860 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8861 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8862 cs, LOCK4res *, resp); 8863 return; 8864 } 8865 8866 if (args->locker.new_lock_owner) { 8867 /* Create a new lockowner for this instance */ 8868 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8869 8870 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8871 8872 stateid = &olo->open_stateid; 8873 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8874 if (status != NFS4_OK) { 8875 NFS4_DEBUG(rfs4_debug, 8876 (CE_NOTE, "Get state failed in lock %d", status)); 8877 *cs->statusp = resp->status = status; 8878 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8879 cs, LOCK4res *, resp); 8880 return; 8881 } 8882 8883 /* Ensure specified filehandle matches */ 8884 if (cs->vp != sp->rs_finfo->rf_vp) { 8885 rfs4_state_rele(sp); 8886 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8887 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8888 cs, LOCK4res *, resp); 8889 return; 8890 } 8891 8892 /* hold off other access to open_owner while we tinker */ 8893 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8894 8895 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 8896 case NFS4_CHECK_STATEID_OLD: 8897 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8898 goto end; 8899 case NFS4_CHECK_STATEID_BAD: 8900 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8901 goto end; 8902 case NFS4_CHECK_STATEID_EXPIRED: 8903 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8904 goto end; 8905 case NFS4_CHECK_STATEID_UNCONFIRMED: 8906 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8907 goto end; 8908 case NFS4_CHECK_STATEID_CLOSED: 8909 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8910 goto end; 8911 case NFS4_CHECK_STATEID_OKAY: 8912 case NFS4_CHECK_STATEID_REPLAY: 8913 switch (rfs4_check_olo_seqid(olo->open_seqid, 8914 sp->rs_owner, resop)) { 8915 case NFS4_CHKSEQ_OKAY: 8916 if (rc == NFS4_CHECK_STATEID_OKAY) 8917 break; 8918 /* 8919 * This is replayed stateid; if seqid 8920 * matches next expected, then client 8921 * is using wrong seqid. 8922 */ 8923 /* FALLTHROUGH */ 8924 case NFS4_CHKSEQ_BAD: 8925 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8926 goto end; 8927 case NFS4_CHKSEQ_REPLAY: 8928 /* This is a duplicate LOCK request */ 8929 dup_lock = TRUE; 8930 8931 /* 8932 * For a duplicate we do not want to 8933 * create a new lockowner as it should 8934 * already exist. 8935 * Turn off the lockowner create flag. 8936 */ 8937 lcreate = FALSE; 8938 } 8939 break; 8940 } 8941 8942 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 8943 if (lo == NULL) { 8944 NFS4_DEBUG(rfs4_debug, 8945 (CE_NOTE, "rfs4_op_lock: no lock owner")); 8946 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 8947 goto end; 8948 } 8949 8950 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 8951 if (lsp == NULL) { 8952 rfs4_update_lease(sp->rs_owner->ro_client); 8953 /* 8954 * Only update theh open_seqid if this is not 8955 * a duplicate request 8956 */ 8957 if (dup_lock == FALSE) { 8958 rfs4_update_open_sequence(sp->rs_owner); 8959 } 8960 8961 NFS4_DEBUG(rfs4_debug, 8962 (CE_NOTE, "rfs4_op_lock: no state")); 8963 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 8964 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8965 rfs4_lockowner_rele(lo); 8966 goto end; 8967 } 8968 8969 /* 8970 * This is the new_lock_owner branch and the client is 8971 * supposed to be associating a new lock_owner with 8972 * the open file at this point. If we find that a 8973 * lock_owner/state association already exists and a 8974 * successful LOCK request was returned to the client, 8975 * an error is returned to the client since this is 8976 * not appropriate. The client should be using the 8977 * existing lock_owner branch. 8978 */ 8979 if (dup_lock == FALSE && create == FALSE) { 8980 if (lsp->rls_lock_completed == TRUE) { 8981 *cs->statusp = 8982 resp->status = NFS4ERR_BAD_SEQID; 8983 rfs4_lockowner_rele(lo); 8984 goto end; 8985 } 8986 } 8987 8988 rfs4_update_lease(sp->rs_owner->ro_client); 8989 8990 /* 8991 * Only update theh open_seqid if this is not 8992 * a duplicate request 8993 */ 8994 if (dup_lock == FALSE) { 8995 rfs4_update_open_sequence(sp->rs_owner); 8996 } 8997 8998 /* 8999 * If this is a duplicate lock request, just copy the 9000 * previously saved reply and return. 9001 */ 9002 if (dup_lock == TRUE) { 9003 /* verify that lock_seqid's match */ 9004 if (lsp->rls_seqid != olo->lock_seqid) { 9005 NFS4_DEBUG(rfs4_debug, 9006 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 9007 "lsp->seqid=%d old->seqid=%d", 9008 lsp->rls_seqid, olo->lock_seqid)); 9009 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9010 } else { 9011 rfs4_copy_reply(resop, &lsp->rls_reply); 9012 /* 9013 * Make sure to copy the just 9014 * retrieved reply status into the 9015 * overall compound status 9016 */ 9017 *cs->statusp = resp->status; 9018 } 9019 rfs4_lockowner_rele(lo); 9020 goto end; 9021 } 9022 9023 rfs4_dbe_lock(lsp->rls_dbe); 9024 9025 /* Make sure to update the lock sequence id */ 9026 lsp->rls_seqid = olo->lock_seqid; 9027 9028 NFS4_DEBUG(rfs4_debug, 9029 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 9030 9031 /* 9032 * This is used to signify the newly created lockowner 9033 * stateid and its sequence number. The checks for 9034 * sequence number and increment don't occur on the 9035 * very first lock request for a lockowner. 9036 */ 9037 lsp->rls_skip_seqid_check = TRUE; 9038 9039 /* hold off other access to lsp while we tinker */ 9040 rfs4_sw_enter(&lsp->rls_sw); 9041 ls_sw_held = TRUE; 9042 9043 rfs4_dbe_unlock(lsp->rls_dbe); 9044 9045 rfs4_lockowner_rele(lo); 9046 } else { 9047 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 9048 /* get lsp and hold the lock on the underlying file struct */ 9049 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 9050 != NFS4_OK) { 9051 *cs->statusp = resp->status = status; 9052 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9053 cs, LOCK4res *, resp); 9054 return; 9055 } 9056 create = FALSE; /* We didn't create lsp */ 9057 9058 /* Ensure specified filehandle matches */ 9059 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9060 rfs4_lo_state_rele(lsp, TRUE); 9061 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9062 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9063 cs, LOCK4res *, resp); 9064 return; 9065 } 9066 9067 /* hold off other access to lsp while we tinker */ 9068 rfs4_sw_enter(&lsp->rls_sw); 9069 ls_sw_held = TRUE; 9070 9071 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9072 /* 9073 * The stateid looks like it was okay (expected to be 9074 * the next one) 9075 */ 9076 case NFS4_CHECK_STATEID_OKAY: 9077 /* 9078 * The sequence id is now checked. Determine 9079 * if this is a replay or if it is in the 9080 * expected (next) sequence. In the case of a 9081 * replay, there are two replay conditions 9082 * that may occur. The first is the normal 9083 * condition where a LOCK is done with a 9084 * NFS4_OK response and the stateid is 9085 * updated. That case is handled below when 9086 * the stateid is identified as a REPLAY. The 9087 * second is the case where an error is 9088 * returned, like NFS4ERR_DENIED, and the 9089 * sequence number is updated but the stateid 9090 * is not updated. This second case is dealt 9091 * with here. So it may seem odd that the 9092 * stateid is okay but the sequence id is a 9093 * replay but it is okay. 9094 */ 9095 switch (rfs4_check_lock_seqid( 9096 args->locker.locker4_u.lock_owner.lock_seqid, 9097 lsp, resop)) { 9098 case NFS4_CHKSEQ_REPLAY: 9099 if (resp->status != NFS4_OK) { 9100 /* 9101 * Here is our replay and need 9102 * to verify that the last 9103 * response was an error. 9104 */ 9105 *cs->statusp = resp->status; 9106 goto end; 9107 } 9108 /* 9109 * This is done since the sequence id 9110 * looked like a replay but it didn't 9111 * pass our check so a BAD_SEQID is 9112 * returned as a result. 9113 */ 9114 /*FALLTHROUGH*/ 9115 case NFS4_CHKSEQ_BAD: 9116 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9117 goto end; 9118 case NFS4_CHKSEQ_OKAY: 9119 /* Everything looks okay move ahead */ 9120 break; 9121 } 9122 break; 9123 case NFS4_CHECK_STATEID_OLD: 9124 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9125 goto end; 9126 case NFS4_CHECK_STATEID_BAD: 9127 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9128 goto end; 9129 case NFS4_CHECK_STATEID_EXPIRED: 9130 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9131 goto end; 9132 case NFS4_CHECK_STATEID_CLOSED: 9133 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9134 goto end; 9135 case NFS4_CHECK_STATEID_REPLAY: 9136 switch (rfs4_check_lock_seqid( 9137 args->locker.locker4_u.lock_owner.lock_seqid, 9138 lsp, resop)) { 9139 case NFS4_CHKSEQ_OKAY: 9140 /* 9141 * This is a replayed stateid; if 9142 * seqid matches the next expected, 9143 * then client is using wrong seqid. 9144 */ 9145 case NFS4_CHKSEQ_BAD: 9146 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9147 goto end; 9148 case NFS4_CHKSEQ_REPLAY: 9149 rfs4_update_lease(lsp->rls_locker->rl_client); 9150 *cs->statusp = status = resp->status; 9151 goto end; 9152 } 9153 break; 9154 default: 9155 ASSERT(FALSE); 9156 break; 9157 } 9158 9159 rfs4_update_lock_sequence(lsp); 9160 rfs4_update_lease(lsp->rls_locker->rl_client); 9161 } 9162 9163 /* 9164 * NFS4 only allows locking on regular files, so 9165 * verify type of object. 9166 */ 9167 if (cs->vp->v_type != VREG) { 9168 if (cs->vp->v_type == VDIR) 9169 status = NFS4ERR_ISDIR; 9170 else 9171 status = NFS4ERR_INVAL; 9172 goto out; 9173 } 9174 9175 cp = lsp->rls_state->rs_owner->ro_client; 9176 9177 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9178 status = NFS4ERR_GRACE; 9179 goto out; 9180 } 9181 9182 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9183 status = NFS4ERR_NO_GRACE; 9184 goto out; 9185 } 9186 9187 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9188 status = NFS4ERR_NO_GRACE; 9189 goto out; 9190 } 9191 9192 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9193 cs->deleg = TRUE; 9194 9195 status = rfs4_do_lock(lsp, args->locktype, 9196 args->offset, args->length, cs->cr, resop); 9197 9198 out: 9199 lsp->rls_skip_seqid_check = FALSE; 9200 9201 *cs->statusp = resp->status = status; 9202 9203 if (status == NFS4_OK) { 9204 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9205 lsp->rls_lock_completed = TRUE; 9206 } 9207 /* 9208 * Only update the "OPEN" response here if this was a new 9209 * lock_owner 9210 */ 9211 if (sp) 9212 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9213 9214 rfs4_update_lock_resp(lsp, resop); 9215 9216 end: 9217 if (lsp) { 9218 if (ls_sw_held) 9219 rfs4_sw_exit(&lsp->rls_sw); 9220 /* 9221 * If an sp obtained, then the lsp does not represent 9222 * a lock on the file struct. 9223 */ 9224 if (sp != NULL) 9225 rfs4_lo_state_rele(lsp, FALSE); 9226 else 9227 rfs4_lo_state_rele(lsp, TRUE); 9228 } 9229 if (sp) { 9230 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9231 rfs4_state_rele(sp); 9232 } 9233 9234 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9235 LOCK4res *, resp); 9236 } 9237 9238 /* free function for LOCK/LOCKT */ 9239 static void 9240 lock_denied_free(nfs_resop4 *resop) 9241 { 9242 LOCK4denied *dp = NULL; 9243 9244 switch (resop->resop) { 9245 case OP_LOCK: 9246 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9247 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9248 break; 9249 case OP_LOCKT: 9250 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9251 dp = &resop->nfs_resop4_u.oplockt.denied; 9252 break; 9253 default: 9254 break; 9255 } 9256 9257 if (dp) 9258 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9259 } 9260 9261 /*ARGSUSED*/ 9262 void 9263 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9264 struct svc_req *req, struct compound_state *cs) 9265 { 9266 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9267 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9268 nfsstat4 status; 9269 stateid4 *stateid = &args->lock_stateid; 9270 rfs4_lo_state_t *lsp; 9271 9272 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9273 LOCKU4args *, args); 9274 9275 if (cs->vp == NULL) { 9276 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9277 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9278 LOCKU4res *, resp); 9279 return; 9280 } 9281 9282 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9283 *cs->statusp = resp->status = status; 9284 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9285 LOCKU4res *, resp); 9286 return; 9287 } 9288 9289 /* Ensure specified filehandle matches */ 9290 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9291 rfs4_lo_state_rele(lsp, TRUE); 9292 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9293 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9294 LOCKU4res *, resp); 9295 return; 9296 } 9297 9298 /* hold off other access to lsp while we tinker */ 9299 rfs4_sw_enter(&lsp->rls_sw); 9300 9301 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9302 case NFS4_CHECK_STATEID_OKAY: 9303 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9304 != NFS4_CHKSEQ_OKAY) { 9305 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9306 goto end; 9307 } 9308 break; 9309 case NFS4_CHECK_STATEID_OLD: 9310 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9311 goto end; 9312 case NFS4_CHECK_STATEID_BAD: 9313 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9314 goto end; 9315 case NFS4_CHECK_STATEID_EXPIRED: 9316 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9317 goto end; 9318 case NFS4_CHECK_STATEID_CLOSED: 9319 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9320 goto end; 9321 case NFS4_CHECK_STATEID_REPLAY: 9322 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9323 case NFS4_CHKSEQ_OKAY: 9324 /* 9325 * This is a replayed stateid; if 9326 * seqid matches the next expected, 9327 * then client is using wrong seqid. 9328 */ 9329 case NFS4_CHKSEQ_BAD: 9330 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9331 goto end; 9332 case NFS4_CHKSEQ_REPLAY: 9333 rfs4_update_lease(lsp->rls_locker->rl_client); 9334 *cs->statusp = status = resp->status; 9335 goto end; 9336 } 9337 break; 9338 default: 9339 ASSERT(FALSE); 9340 break; 9341 } 9342 9343 rfs4_update_lock_sequence(lsp); 9344 rfs4_update_lease(lsp->rls_locker->rl_client); 9345 9346 /* 9347 * NFS4 only allows locking on regular files, so 9348 * verify type of object. 9349 */ 9350 if (cs->vp->v_type != VREG) { 9351 if (cs->vp->v_type == VDIR) 9352 status = NFS4ERR_ISDIR; 9353 else 9354 status = NFS4ERR_INVAL; 9355 goto out; 9356 } 9357 9358 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9359 status = NFS4ERR_GRACE; 9360 goto out; 9361 } 9362 9363 status = rfs4_do_lock(lsp, args->locktype, 9364 args->offset, args->length, cs->cr, resop); 9365 9366 out: 9367 *cs->statusp = resp->status = status; 9368 9369 if (status == NFS4_OK) 9370 resp->lock_stateid = lsp->rls_lockid.stateid; 9371 9372 rfs4_update_lock_resp(lsp, resop); 9373 9374 end: 9375 rfs4_sw_exit(&lsp->rls_sw); 9376 rfs4_lo_state_rele(lsp, TRUE); 9377 9378 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9379 LOCKU4res *, resp); 9380 } 9381 9382 /* 9383 * LOCKT is a best effort routine, the client can not be guaranteed that 9384 * the status return is still in effect by the time the reply is received. 9385 * They are numerous race conditions in this routine, but we are not required 9386 * and can not be accurate. 9387 */ 9388 /*ARGSUSED*/ 9389 void 9390 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9391 struct svc_req *req, struct compound_state *cs) 9392 { 9393 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9394 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9395 rfs4_lockowner_t *lo; 9396 rfs4_client_t *cp; 9397 bool_t create = FALSE; 9398 struct flock64 flk; 9399 int error; 9400 int flag = FREAD | FWRITE; 9401 int ltype; 9402 length4 posix_length; 9403 sysid_t sysid; 9404 pid_t pid; 9405 9406 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9407 LOCKT4args *, args); 9408 9409 if (cs->vp == NULL) { 9410 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9411 goto out; 9412 } 9413 9414 /* 9415 * NFS4 only allows locking on regular files, so 9416 * verify type of object. 9417 */ 9418 if (cs->vp->v_type != VREG) { 9419 if (cs->vp->v_type == VDIR) 9420 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9421 else 9422 *cs->statusp = resp->status = NFS4ERR_INVAL; 9423 goto out; 9424 } 9425 9426 /* 9427 * Check out the clientid to ensure the server knows about it 9428 * so that we correctly inform the client of a server reboot. 9429 */ 9430 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9431 == NULL) { 9432 *cs->statusp = resp->status = 9433 rfs4_check_clientid(&args->owner.clientid, 0); 9434 goto out; 9435 } 9436 if (rfs4_lease_expired(cp)) { 9437 rfs4_client_close(cp); 9438 /* 9439 * Protocol doesn't allow returning NFS4ERR_STALE as 9440 * other operations do on this check so STALE_CLIENTID 9441 * is returned instead 9442 */ 9443 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9444 goto out; 9445 } 9446 9447 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9448 *cs->statusp = resp->status = NFS4ERR_GRACE; 9449 rfs4_client_rele(cp); 9450 goto out; 9451 } 9452 rfs4_client_rele(cp); 9453 9454 resp->status = NFS4_OK; 9455 9456 switch (args->locktype) { 9457 case READ_LT: 9458 case READW_LT: 9459 ltype = F_RDLCK; 9460 break; 9461 case WRITE_LT: 9462 case WRITEW_LT: 9463 ltype = F_WRLCK; 9464 break; 9465 } 9466 9467 posix_length = args->length; 9468 /* Check for zero length. To lock to end of file use all ones for V4 */ 9469 if (posix_length == 0) { 9470 *cs->statusp = resp->status = NFS4ERR_INVAL; 9471 goto out; 9472 } else if (posix_length == (length4)(~0)) { 9473 posix_length = 0; /* Posix to end of file */ 9474 } 9475 9476 /* Find or create a lockowner */ 9477 lo = rfs4_findlockowner(&args->owner, &create); 9478 9479 if (lo) { 9480 pid = lo->rl_pid; 9481 if ((resp->status = 9482 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9483 goto err; 9484 } else { 9485 pid = 0; 9486 sysid = lockt_sysid; 9487 } 9488 retry: 9489 flk.l_type = ltype; 9490 flk.l_whence = 0; /* SEEK_SET */ 9491 flk.l_start = args->offset; 9492 flk.l_len = posix_length; 9493 flk.l_sysid = sysid; 9494 flk.l_pid = pid; 9495 flag |= F_REMOTELOCK; 9496 9497 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9498 9499 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9500 if (flk.l_len < 0 || flk.l_start < 0) { 9501 resp->status = NFS4ERR_INVAL; 9502 goto err; 9503 } 9504 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9505 NULL, cs->cr, NULL); 9506 9507 /* 9508 * N.B. We map error values to nfsv4 errors. This is differrent 9509 * than puterrno4 routine. 9510 */ 9511 switch (error) { 9512 case 0: 9513 if (flk.l_type == F_UNLCK) 9514 resp->status = NFS4_OK; 9515 else { 9516 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9517 goto retry; 9518 resp->status = NFS4ERR_DENIED; 9519 } 9520 break; 9521 case EOVERFLOW: 9522 resp->status = NFS4ERR_INVAL; 9523 break; 9524 case EINVAL: 9525 resp->status = NFS4ERR_NOTSUPP; 9526 break; 9527 default: 9528 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9529 error); 9530 resp->status = NFS4ERR_SERVERFAULT; 9531 break; 9532 } 9533 9534 err: 9535 if (lo) 9536 rfs4_lockowner_rele(lo); 9537 *cs->statusp = resp->status; 9538 out: 9539 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9540 LOCKT4res *, resp); 9541 } 9542 9543 int 9544 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9545 { 9546 int err; 9547 int cmd; 9548 vnode_t *vp; 9549 struct shrlock shr; 9550 struct shr_locowner shr_loco; 9551 int fflags = 0; 9552 9553 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9554 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9555 9556 if (sp->rs_closed) 9557 return (NFS4ERR_OLD_STATEID); 9558 9559 vp = sp->rs_finfo->rf_vp; 9560 ASSERT(vp); 9561 9562 shr.s_access = shr.s_deny = 0; 9563 9564 if (access & OPEN4_SHARE_ACCESS_READ) { 9565 fflags |= FREAD; 9566 shr.s_access |= F_RDACC; 9567 } 9568 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9569 fflags |= FWRITE; 9570 shr.s_access |= F_WRACC; 9571 } 9572 ASSERT(shr.s_access); 9573 9574 if (deny & OPEN4_SHARE_DENY_READ) 9575 shr.s_deny |= F_RDDNY; 9576 if (deny & OPEN4_SHARE_DENY_WRITE) 9577 shr.s_deny |= F_WRDNY; 9578 9579 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9580 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9581 shr_loco.sl_pid = shr.s_pid; 9582 shr_loco.sl_id = shr.s_sysid; 9583 shr.s_owner = (caddr_t)&shr_loco; 9584 shr.s_own_len = sizeof (shr_loco); 9585 9586 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9587 9588 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9589 if (err != 0) { 9590 if (err == EAGAIN) 9591 err = NFS4ERR_SHARE_DENIED; 9592 else 9593 err = puterrno4(err); 9594 return (err); 9595 } 9596 9597 sp->rs_share_access |= access; 9598 sp->rs_share_deny |= deny; 9599 9600 return (0); 9601 } 9602 9603 int 9604 rfs4_unshare(rfs4_state_t *sp) 9605 { 9606 int err; 9607 struct shrlock shr; 9608 struct shr_locowner shr_loco; 9609 9610 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9611 9612 if (sp->rs_closed || sp->rs_share_access == 0) 9613 return (0); 9614 9615 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9616 ASSERT(sp->rs_finfo->rf_vp); 9617 9618 shr.s_access = shr.s_deny = 0; 9619 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9620 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9621 shr_loco.sl_pid = shr.s_pid; 9622 shr_loco.sl_id = shr.s_sysid; 9623 shr.s_owner = (caddr_t)&shr_loco; 9624 shr.s_own_len = sizeof (shr_loco); 9625 9626 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9627 NULL); 9628 if (err != 0) { 9629 err = puterrno4(err); 9630 return (err); 9631 } 9632 9633 sp->rs_share_access = 0; 9634 sp->rs_share_deny = 0; 9635 9636 return (0); 9637 9638 } 9639 9640 static int 9641 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9642 { 9643 struct clist *wcl; 9644 count4 count = rok->data_len; 9645 int wlist_len; 9646 9647 wcl = args->wlist; 9648 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9649 return (FALSE); 9650 } 9651 wcl = args->wlist; 9652 rok->wlist_len = wlist_len; 9653 rok->wlist = wcl; 9654 return (TRUE); 9655 } 9656 9657 /* tunable to disable server referrals */ 9658 int rfs4_no_referrals = 0; 9659 9660 /* 9661 * Find an NFS record in reparse point data. 9662 * Returns 0 for success and <0 or an errno value on failure. 9663 */ 9664 int 9665 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9666 { 9667 int err; 9668 char *stype, *val; 9669 nvlist_t *nvl; 9670 nvpair_t *curr; 9671 9672 if ((nvl = reparse_init()) == NULL) 9673 return (-1); 9674 9675 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9676 reparse_free(nvl); 9677 return (err); 9678 } 9679 9680 curr = NULL; 9681 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9682 if ((stype = nvpair_name(curr)) == NULL) { 9683 reparse_free(nvl); 9684 return (-2); 9685 } 9686 if (strncasecmp(stype, "NFS", 3) == 0) 9687 break; 9688 } 9689 9690 if ((curr == NULL) || 9691 (nvpair_value_string(curr, &val))) { 9692 reparse_free(nvl); 9693 return (-3); 9694 } 9695 *nvlp = nvl; 9696 *svcp = stype; 9697 *datap = val; 9698 return (0); 9699 } 9700 9701 int 9702 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9703 { 9704 nvlist_t *nvl; 9705 char *s, *d; 9706 9707 if (rfs4_no_referrals != 0) 9708 return (B_FALSE); 9709 9710 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9711 return (B_FALSE); 9712 9713 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9714 return (B_FALSE); 9715 9716 reparse_free(nvl); 9717 9718 return (B_TRUE); 9719 } 9720 9721 /* 9722 * There is a user-level copy of this routine in ref_subr.c. 9723 * Changes should be kept in sync. 9724 */ 9725 static int 9726 nfs4_create_components(char *path, component4 *comp4) 9727 { 9728 int slen, plen, ncomp; 9729 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9730 9731 if (path == NULL) 9732 return (0); 9733 9734 plen = strlen(path) + 1; /* include the terminator */ 9735 ori_path = path; 9736 ncomp = 0; 9737 9738 /* count number of components in the path */ 9739 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9740 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9741 if ((slen = nxtc - path) == 0) { 9742 path = nxtc + 1; 9743 continue; 9744 } 9745 9746 if (comp4 != NULL) { 9747 bcopy(path, buf, slen); 9748 buf[slen] = '\0'; 9749 (void) str_to_utf8(buf, &comp4[ncomp]); 9750 } 9751 9752 ncomp++; /* 1 valid component */ 9753 path = nxtc + 1; 9754 } 9755 if (*nxtc == '\0' || *nxtc == '\n') 9756 break; 9757 } 9758 9759 return (ncomp); 9760 } 9761 9762 /* 9763 * There is a user-level copy of this routine in ref_subr.c. 9764 * Changes should be kept in sync. 9765 */ 9766 static int 9767 make_pathname4(char *path, pathname4 *pathname) 9768 { 9769 int ncomp; 9770 component4 *comp4; 9771 9772 if (pathname == NULL) 9773 return (0); 9774 9775 if (path == NULL) { 9776 pathname->pathname4_val = NULL; 9777 pathname->pathname4_len = 0; 9778 return (0); 9779 } 9780 9781 /* count number of components to alloc buffer */ 9782 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9783 pathname->pathname4_val = NULL; 9784 pathname->pathname4_len = 0; 9785 return (0); 9786 } 9787 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9788 9789 /* copy components into allocated buffer */ 9790 ncomp = nfs4_create_components(path, comp4); 9791 9792 pathname->pathname4_val = comp4; 9793 pathname->pathname4_len = ncomp; 9794 9795 return (ncomp); 9796 } 9797 9798 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9799 9800 fs_locations4 * 9801 fetch_referral(vnode_t *vp, cred_t *cr) 9802 { 9803 nvlist_t *nvl; 9804 char *stype, *sdata; 9805 fs_locations4 *result; 9806 char buf[1024]; 9807 size_t bufsize; 9808 XDR xdr; 9809 int err; 9810 9811 /* 9812 * Check attrs to ensure it's a reparse point 9813 */ 9814 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9815 return (NULL); 9816 9817 /* 9818 * Look for an NFS record and get the type and data 9819 */ 9820 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9821 return (NULL); 9822 9823 /* 9824 * With the type and data, upcall to get the referral 9825 */ 9826 bufsize = sizeof (buf); 9827 bzero(buf, sizeof (buf)); 9828 err = reparse_kderef((const char *)stype, (const char *)sdata, 9829 buf, &bufsize); 9830 reparse_free(nvl); 9831 9832 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9833 char *, stype, char *, sdata, char *, buf, int, err); 9834 if (err) { 9835 cmn_err(CE_NOTE, 9836 "reparsed daemon not running: unable to get referral (%d)", 9837 err); 9838 return (NULL); 9839 } 9840 9841 /* 9842 * We get an XDR'ed record back from the kderef call 9843 */ 9844 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9845 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9846 err = xdr_fs_locations4(&xdr, result); 9847 XDR_DESTROY(&xdr); 9848 if (err != TRUE) { 9849 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9850 int, err); 9851 return (NULL); 9852 } 9853 9854 /* 9855 * Look at path to recover fs_root, ignoring the leading '/' 9856 */ 9857 (void) make_pathname4(vp->v_path, &result->fs_root); 9858 9859 return (result); 9860 } 9861 9862 char * 9863 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9864 { 9865 fs_locations4 *fsl; 9866 fs_location4 *fs; 9867 char *server, *path, *symbuf; 9868 static char *prefix = "/net/"; 9869 int i, size, npaths; 9870 uint_t len; 9871 9872 /* Get the referral */ 9873 if ((fsl = fetch_referral(vp, cr)) == NULL) 9874 return (NULL); 9875 9876 /* Deal with only the first location and first server */ 9877 fs = &fsl->locations_val[0]; 9878 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9879 if (server == NULL) { 9880 rfs4_free_fs_locations4(fsl); 9881 kmem_free(fsl, sizeof (fs_locations4)); 9882 return (NULL); 9883 } 9884 9885 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 9886 size = strlen(prefix) + len; 9887 for (i = 0; i < fs->rootpath.pathname4_len; i++) 9888 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 9889 9890 /* Allocate the symlink buffer and fill it */ 9891 symbuf = kmem_zalloc(size, KM_SLEEP); 9892 (void) strcat(symbuf, prefix); 9893 (void) strcat(symbuf, server); 9894 kmem_free(server, len); 9895 9896 npaths = 0; 9897 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 9898 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 9899 if (path == NULL) 9900 continue; 9901 (void) strcat(symbuf, "/"); 9902 (void) strcat(symbuf, path); 9903 npaths++; 9904 kmem_free(path, len); 9905 } 9906 9907 rfs4_free_fs_locations4(fsl); 9908 kmem_free(fsl, sizeof (fs_locations4)); 9909 9910 if (strsz != NULL) 9911 *strsz = size; 9912 return (symbuf); 9913 } 9914 9915 /* 9916 * Check to see if we have a downrev Solaris client, so that we 9917 * can send it a symlink instead of a referral. 9918 */ 9919 int 9920 client_is_downrev(struct svc_req *req) 9921 { 9922 struct sockaddr *ca; 9923 rfs4_clntip_t *ci; 9924 bool_t create = FALSE; 9925 int is_downrev; 9926 9927 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 9928 ASSERT(ca); 9929 ci = rfs4_find_clntip(ca, &create); 9930 if (ci == NULL) 9931 return (0); 9932 is_downrev = ci->ri_no_referrals; 9933 rfs4_dbe_rele(ci->ri_dbe); 9934 return (is_downrev); 9935 } 9936