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 #include <sys/kstat.h> 61 62 #include <fs/fs_reparse.h> 63 64 #include <rpc/types.h> 65 #include <rpc/auth.h> 66 #include <rpc/rpcsec_gss.h> 67 #include <rpc/svc.h> 68 69 #include <nfs/nfs.h> 70 #include <nfs/export.h> 71 #include <nfs/nfs_cmd.h> 72 #include <nfs/lm.h> 73 #include <nfs/nfs4.h> 74 75 #include <sys/strsubr.h> 76 #include <sys/strsun.h> 77 78 #include <inet/common.h> 79 #include <inet/ip.h> 80 #include <inet/ip6.h> 81 82 #include <sys/tsol/label.h> 83 #include <sys/tsol/tndb.h> 84 85 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ 86 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; 87 #define RFS4_LOCK_DELAY 10 /* Milliseconds */ 88 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; 89 extern struct svc_ops rdma_svc_ops; 90 extern int nfs_loaned_buffers; 91 /* End of Tunables */ 92 93 static int rdma_setup_read_data4(READ4args *, READ4res *); 94 95 /* 96 * Used to bump the stateid4.seqid value and show changes in the stateid 97 */ 98 #define next_stateid(sp) (++(sp)->bits.chgseq) 99 100 /* 101 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. 102 * This is used to return NFS4ERR_TOOSMALL when clients specify 103 * maxcount that isn't large enough to hold the smallest possible 104 * XDR encoded dirent. 105 * 106 * sizeof cookie (8 bytes) + 107 * sizeof name_len (4 bytes) + 108 * sizeof smallest (padded) name (4 bytes) + 109 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 110 * sizeof attrlist4_len (4 bytes) + 111 * sizeof next boolean (4 bytes) 112 * 113 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing 114 * the smallest possible entry4 (assumes no attrs requested). 115 * sizeof nfsstat4 (4 bytes) + 116 * sizeof verifier4 (8 bytes) + 117 * sizeof entry4list bool (4 bytes) + 118 * sizeof entry4 (36 bytes) + 119 * sizeof eof bool (4 bytes) 120 * 121 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to 122 * VOP_READDIR. Its value is the size of the maximum possible dirent 123 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent 124 * required for a given name length. MAXNAMELEN is the maximum 125 * filename length allowed in Solaris. The first two DIRENT64_RECLEN() 126 * macros are to allow for . and .. entries -- just a minor tweak to try 127 * and guarantee that buffer we give to VOP_READDIR will be large enough 128 * to hold ., .., and the largest possible solaris dirent64. 129 */ 130 #define RFS4_MINLEN_ENTRY4 36 131 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) 132 #define RFS4_MINLEN_RDDIR_BUF \ 133 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) 134 135 /* 136 * It would be better to pad to 4 bytes since that's what XDR would do, 137 * but the dirents UFS gives us are already padded to 8, so just take 138 * what we're given. Dircount is only a hint anyway. Currently the 139 * solaris kernel is ASCII only, so there's no point in calling the 140 * UTF8 functions. 141 * 142 * dirent64: named padded to provide 8 byte struct alignment 143 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) 144 * 145 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes 146 * 147 */ 148 #define DIRENT64_TO_DIRCOUNT(dp) \ 149 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) 150 151 time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ 152 153 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ 154 155 u_longlong_t nfs4_srv_caller_id; 156 uint_t nfs4_srv_vkey = 0; 157 158 verifier4 Write4verf; 159 verifier4 Readdir4verf; 160 161 void rfs4_init_compound_state(struct compound_state *); 162 163 static void nullfree(caddr_t); 164 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 165 struct compound_state *); 166 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 167 struct compound_state *); 168 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 169 struct compound_state *); 170 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 171 struct compound_state *); 172 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 173 struct compound_state *); 174 static void rfs4_op_create_free(nfs_resop4 *resop); 175 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, 176 struct svc_req *, struct compound_state *); 177 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, 178 struct svc_req *, struct compound_state *); 179 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 180 struct compound_state *); 181 static void rfs4_op_getattr_free(nfs_resop4 *); 182 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 183 struct compound_state *); 184 static void rfs4_op_getfh_free(nfs_resop4 *); 185 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 186 struct compound_state *); 187 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 188 struct compound_state *); 189 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 190 struct compound_state *); 191 static void lock_denied_free(nfs_resop4 *); 192 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 193 struct compound_state *); 194 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 195 struct compound_state *); 196 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 197 struct compound_state *); 198 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 199 struct compound_state *); 200 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, 201 struct svc_req *req, struct compound_state *cs); 202 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 203 struct compound_state *); 204 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 205 struct compound_state *); 206 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, 207 struct svc_req *, struct compound_state *); 208 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, 209 struct svc_req *, struct compound_state *); 210 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 211 struct compound_state *); 212 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 213 struct compound_state *); 214 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 215 struct compound_state *); 216 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 217 struct compound_state *); 218 static void rfs4_op_read_free(nfs_resop4 *); 219 static void rfs4_op_readdir_free(nfs_resop4 *resop); 220 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 221 struct compound_state *); 222 static void rfs4_op_readlink_free(nfs_resop4 *); 223 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, 224 struct svc_req *, struct compound_state *); 225 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 226 struct compound_state *); 227 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 228 struct compound_state *); 229 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 230 struct compound_state *); 231 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 232 struct compound_state *); 233 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 234 struct compound_state *); 235 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 236 struct compound_state *); 237 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 238 struct compound_state *); 239 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 240 struct compound_state *); 241 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, 242 struct svc_req *, struct compound_state *); 243 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, 244 struct svc_req *req, struct compound_state *); 245 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, 246 struct compound_state *); 247 static void rfs4_op_secinfo_free(nfs_resop4 *); 248 249 static nfsstat4 check_open_access(uint32_t, 250 struct compound_state *, struct svc_req *); 251 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); 252 void rfs4_ss_clid(rfs4_client_t *); 253 254 /* 255 * translation table for attrs 256 */ 257 struct nfs4_ntov_table { 258 union nfs4_attr_u *na; 259 uint8_t amap[NFS4_MAXNUM_ATTRS]; 260 int attrcnt; 261 bool_t vfsstat; 262 }; 263 264 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); 265 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 266 struct nfs4_svgetit_arg *sargp); 267 268 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, 269 struct compound_state *cs, struct nfs4_svgetit_arg *sargp, 270 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); 271 272 fem_t *deleg_rdops; 273 fem_t *deleg_wrops; 274 275 rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ 276 kmutex_t rfs4_servinst_lock; /* protects linked list */ 277 int rfs4_seen_first_compound; /* set first time we see one */ 278 279 /* 280 * NFS4 op dispatch table 281 */ 282 283 struct rfsv4disp { 284 void (*dis_proc)(); /* proc to call */ 285 void (*dis_resfree)(); /* frees space allocated by proc */ 286 int dis_flags; /* RPC_IDEMPOTENT, etc... */ 287 int op_type; /* operation type, see below */ 288 }; 289 290 /* 291 * operation types; used primarily for the per-exportinfo kstat implementation 292 */ 293 #define NFS4_OP_NOFH 0 /* The operation does not operate with any */ 294 /* particular filehandle; we cannot associate */ 295 /* it with any exportinfo. */ 296 297 #define NFS4_OP_CFH 1 /* The operation works with the current */ 298 /* filehandle; we associate the operation */ 299 /* with the exportinfo related to the current */ 300 /* filehandle (as set before the operation is */ 301 /* executed). */ 302 303 #define NFS4_OP_SFH 2 /* The operation works with the saved */ 304 /* filehandle; we associate the operation */ 305 /* with the exportinfo related to the saved */ 306 /* filehandle (as set before the operation is */ 307 /* executed). */ 308 309 #define NFS4_OP_POSTCFH 3 /* The operation ignores the current */ 310 /* filehandle, but sets the new current */ 311 /* filehandle instead; we associate the */ 312 /* operation with the exportinfo related to */ 313 /* the current filehandle as set after the */ 314 /* operation is successfuly executed. Since */ 315 /* we do not know the particular exportinfo */ 316 /* (and thus the kstat) before the operation */ 317 /* is done, there is no simple way how to */ 318 /* update some I/O kstat statistics related */ 319 /* to kstat_queue(9F). */ 320 321 static struct rfsv4disp rfsv4disptab[] = { 322 /* 323 * NFS VERSION 4 324 */ 325 326 /* RFS_NULL = 0 */ 327 {rfs4_op_illegal, nullfree, 0, NFS4_OP_NOFH}, 328 329 /* UNUSED = 1 */ 330 {rfs4_op_illegal, nullfree, 0, NFS4_OP_NOFH}, 331 332 /* UNUSED = 2 */ 333 {rfs4_op_illegal, nullfree, 0, NFS4_OP_NOFH}, 334 335 /* OP_ACCESS = 3 */ 336 {rfs4_op_access, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 337 338 /* OP_CLOSE = 4 */ 339 {rfs4_op_close, nullfree, 0, NFS4_OP_CFH}, 340 341 /* OP_COMMIT = 5 */ 342 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 343 344 /* OP_CREATE = 6 */ 345 {rfs4_op_create, nullfree, 0, NFS4_OP_CFH}, 346 347 /* OP_DELEGPURGE = 7 */ 348 {rfs4_op_delegpurge, nullfree, 0, NFS4_OP_NOFH}, 349 350 /* OP_DELEGRETURN = 8 */ 351 {rfs4_op_delegreturn, nullfree, 0, NFS4_OP_CFH}, 352 353 /* OP_GETATTR = 9 */ 354 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 355 356 /* OP_GETFH = 10 */ 357 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL, NFS4_OP_CFH}, 358 359 /* OP_LINK = 11 */ 360 {rfs4_op_link, nullfree, 0, NFS4_OP_CFH}, 361 362 /* OP_LOCK = 12 */ 363 {rfs4_op_lock, lock_denied_free, 0, NFS4_OP_CFH}, 364 365 /* OP_LOCKT = 13 */ 366 {rfs4_op_lockt, lock_denied_free, 0, NFS4_OP_CFH}, 367 368 /* OP_LOCKU = 14 */ 369 {rfs4_op_locku, nullfree, 0, NFS4_OP_CFH}, 370 371 /* OP_LOOKUP = 15 */ 372 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK), 373 NFS4_OP_CFH}, 374 375 /* OP_LOOKUPP = 16 */ 376 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK), 377 NFS4_OP_CFH}, 378 379 /* OP_NVERIFY = 17 */ 380 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 381 382 /* OP_OPEN = 18 */ 383 {rfs4_op_open, rfs4_free_reply, 0, NFS4_OP_CFH}, 384 385 /* OP_OPENATTR = 19 */ 386 {rfs4_op_openattr, nullfree, 0, NFS4_OP_CFH}, 387 388 /* OP_OPEN_CONFIRM = 20 */ 389 {rfs4_op_open_confirm, nullfree, 0, NFS4_OP_CFH}, 390 391 /* OP_OPEN_DOWNGRADE = 21 */ 392 {rfs4_op_open_downgrade, nullfree, 0, NFS4_OP_CFH}, 393 394 /* OP_OPEN_PUTFH = 22 */ 395 {rfs4_op_putfh, nullfree, RPC_ALL, NFS4_OP_POSTCFH}, 396 397 /* OP_PUTPUBFH = 23 */ 398 {rfs4_op_putpubfh, nullfree, RPC_ALL, NFS4_OP_POSTCFH}, 399 400 /* OP_PUTROOTFH = 24 */ 401 {rfs4_op_putrootfh, nullfree, RPC_ALL, NFS4_OP_POSTCFH}, 402 403 /* OP_READ = 25 */ 404 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 405 406 /* OP_READDIR = 26 */ 407 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 408 409 /* OP_READLINK = 27 */ 410 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT, NFS4_OP_CFH}, 411 412 /* OP_REMOVE = 28 */ 413 {rfs4_op_remove, nullfree, 0, NFS4_OP_CFH}, 414 415 /* OP_RENAME = 29 */ 416 {rfs4_op_rename, nullfree, 0, NFS4_OP_CFH}, 417 418 /* OP_RENEW = 30 */ 419 {rfs4_op_renew, nullfree, 0, NFS4_OP_NOFH}, 420 421 /* OP_RESTOREFH = 31 */ 422 {rfs4_op_restorefh, nullfree, RPC_ALL, NFS4_OP_SFH}, 423 424 /* OP_SAVEFH = 32 */ 425 {rfs4_op_savefh, nullfree, RPC_ALL, NFS4_OP_CFH}, 426 427 /* OP_SECINFO = 33 */ 428 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0, NFS4_OP_CFH}, 429 430 /* OP_SETATTR = 34 */ 431 {rfs4_op_setattr, nullfree, 0, NFS4_OP_CFH}, 432 433 /* OP_SETCLIENTID = 35 */ 434 {rfs4_op_setclientid, nullfree, 0, NFS4_OP_NOFH}, 435 436 /* OP_SETCLIENTID_CONFIRM = 36 */ 437 {rfs4_op_setclientid_confirm, nullfree, 0, NFS4_OP_NOFH}, 438 439 /* OP_VERIFY = 37 */ 440 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT, NFS4_OP_CFH}, 441 442 /* OP_WRITE = 38 */ 443 {rfs4_op_write, nullfree, 0, NFS4_OP_CFH}, 444 445 /* OP_RELEASE_LOCKOWNER = 39 */ 446 {rfs4_op_release_lockowner, nullfree, 0, NFS4_OP_NOFH}, 447 }; 448 449 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); 450 451 #define OP_ILLEGAL_IDX (rfsv4disp_cnt) 452 453 #ifdef DEBUG 454 455 int rfs4_fillone_debug = 0; 456 int rfs4_no_stub_access = 1; 457 int rfs4_rddir_debug = 0; 458 459 static char *rfs4_op_string[] = { 460 "rfs4_op_null", 461 "rfs4_op_1 unused", 462 "rfs4_op_2 unused", 463 "rfs4_op_access", 464 "rfs4_op_close", 465 "rfs4_op_commit", 466 "rfs4_op_create", 467 "rfs4_op_delegpurge", 468 "rfs4_op_delegreturn", 469 "rfs4_op_getattr", 470 "rfs4_op_getfh", 471 "rfs4_op_link", 472 "rfs4_op_lock", 473 "rfs4_op_lockt", 474 "rfs4_op_locku", 475 "rfs4_op_lookup", 476 "rfs4_op_lookupp", 477 "rfs4_op_nverify", 478 "rfs4_op_open", 479 "rfs4_op_openattr", 480 "rfs4_op_open_confirm", 481 "rfs4_op_open_downgrade", 482 "rfs4_op_putfh", 483 "rfs4_op_putpubfh", 484 "rfs4_op_putrootfh", 485 "rfs4_op_read", 486 "rfs4_op_readdir", 487 "rfs4_op_readlink", 488 "rfs4_op_remove", 489 "rfs4_op_rename", 490 "rfs4_op_renew", 491 "rfs4_op_restorefh", 492 "rfs4_op_savefh", 493 "rfs4_op_secinfo", 494 "rfs4_op_setattr", 495 "rfs4_op_setclientid", 496 "rfs4_op_setclient_confirm", 497 "rfs4_op_verify", 498 "rfs4_op_write", 499 "rfs4_op_release_lockowner", 500 "rfs4_op_illegal" 501 }; 502 #endif 503 504 void rfs4_ss_chkclid(rfs4_client_t *); 505 506 extern size_t strlcpy(char *dst, const char *src, size_t dstsize); 507 508 extern void rfs4_free_fs_locations4(fs_locations4 *); 509 510 #ifdef nextdp 511 #undef nextdp 512 #endif 513 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) 514 515 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { 516 VOPNAME_OPEN, { .femop_open = deleg_rd_open }, 517 VOPNAME_WRITE, { .femop_write = deleg_rd_write }, 518 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, 519 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, 520 VOPNAME_SPACE, { .femop_space = deleg_rd_space }, 521 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, 522 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, 523 NULL, NULL 524 }; 525 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { 526 VOPNAME_OPEN, { .femop_open = deleg_wr_open }, 527 VOPNAME_READ, { .femop_read = deleg_wr_read }, 528 VOPNAME_WRITE, { .femop_write = deleg_wr_write }, 529 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, 530 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, 531 VOPNAME_SPACE, { .femop_space = deleg_wr_space }, 532 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, 533 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, 534 NULL, NULL 535 }; 536 537 int 538 rfs4_srvrinit(void) 539 { 540 timespec32_t verf; 541 int error; 542 extern void rfs4_attr_init(); 543 extern krwlock_t rfs4_deleg_policy_lock; 544 545 /* 546 * The following algorithm attempts to find a unique verifier 547 * to be used as the write verifier returned from the server 548 * to the client. It is important that this verifier change 549 * whenever the server reboots. Of secondary importance, it 550 * is important for the verifier to be unique between two 551 * different servers. 552 * 553 * Thus, an attempt is made to use the system hostid and the 554 * current time in seconds when the nfssrv kernel module is 555 * loaded. It is assumed that an NFS server will not be able 556 * to boot and then to reboot in less than a second. If the 557 * hostid has not been set, then the current high resolution 558 * time is used. This will ensure different verifiers each 559 * time the server reboots and minimize the chances that two 560 * different servers will have the same verifier. 561 * XXX - this is broken on LP64 kernels. 562 */ 563 verf.tv_sec = (time_t)zone_get_hostid(NULL); 564 if (verf.tv_sec != 0) { 565 verf.tv_nsec = gethrestime_sec(); 566 } else { 567 timespec_t tverf; 568 569 gethrestime(&tverf); 570 verf.tv_sec = (time_t)tverf.tv_sec; 571 verf.tv_nsec = tverf.tv_nsec; 572 } 573 574 Write4verf = *(uint64_t *)&verf; 575 576 rfs4_attr_init(); 577 mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); 578 579 /* Used to manage create/destroy of server state */ 580 mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); 581 582 /* Used to manage access to server instance linked list */ 583 mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); 584 585 /* Used to manage access to rfs4_deleg_policy */ 586 rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); 587 588 error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); 589 if (error != 0) { 590 rfs4_disable_delegation(); 591 } else { 592 error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, 593 &deleg_wrops); 594 if (error != 0) { 595 rfs4_disable_delegation(); 596 fem_free(deleg_rdops); 597 } 598 } 599 600 nfs4_srv_caller_id = fs_new_caller_id(); 601 602 lockt_sysid = lm_alloc_sysidt(); 603 604 vsd_create(&nfs4_srv_vkey, NULL); 605 606 return (0); 607 } 608 609 void 610 rfs4_srvrfini(void) 611 { 612 extern krwlock_t rfs4_deleg_policy_lock; 613 614 if (lockt_sysid != LM_NOSYSID) { 615 lm_free_sysidt(lockt_sysid); 616 lockt_sysid = LM_NOSYSID; 617 } 618 619 mutex_destroy(&rfs4_deleg_lock); 620 mutex_destroy(&rfs4_state_lock); 621 rw_destroy(&rfs4_deleg_policy_lock); 622 623 fem_free(deleg_rdops); 624 fem_free(deleg_wrops); 625 } 626 627 void 628 rfs4_init_compound_state(struct compound_state *cs) 629 { 630 bzero(cs, sizeof (*cs)); 631 cs->cont = TRUE; 632 cs->access = CS_ACCESS_DENIED; 633 cs->deleg = FALSE; 634 cs->mandlock = FALSE; 635 cs->fh.nfs_fh4_val = cs->fhbuf; 636 } 637 638 void 639 rfs4_grace_start(rfs4_servinst_t *sip) 640 { 641 rw_enter(&sip->rwlock, RW_WRITER); 642 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); 643 sip->grace_period = rfs4_grace_period; 644 rw_exit(&sip->rwlock); 645 } 646 647 /* 648 * returns true if the instance's grace period has never been started 649 */ 650 int 651 rfs4_servinst_grace_new(rfs4_servinst_t *sip) 652 { 653 time_t start_time; 654 655 rw_enter(&sip->rwlock, RW_READER); 656 start_time = sip->start_time; 657 rw_exit(&sip->rwlock); 658 659 return (start_time == 0); 660 } 661 662 /* 663 * Indicates if server instance is within the 664 * grace period. 665 */ 666 int 667 rfs4_servinst_in_grace(rfs4_servinst_t *sip) 668 { 669 time_t grace_expiry; 670 671 rw_enter(&sip->rwlock, RW_READER); 672 grace_expiry = sip->start_time + sip->grace_period; 673 rw_exit(&sip->rwlock); 674 675 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); 676 } 677 678 int 679 rfs4_clnt_in_grace(rfs4_client_t *cp) 680 { 681 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 682 683 return (rfs4_servinst_in_grace(cp->rc_server_instance)); 684 } 685 686 /* 687 * reset all currently active grace periods 688 */ 689 void 690 rfs4_grace_reset_all(void) 691 { 692 rfs4_servinst_t *sip; 693 694 mutex_enter(&rfs4_servinst_lock); 695 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 696 if (rfs4_servinst_in_grace(sip)) 697 rfs4_grace_start(sip); 698 mutex_exit(&rfs4_servinst_lock); 699 } 700 701 /* 702 * start any new instances' grace periods 703 */ 704 void 705 rfs4_grace_start_new(void) 706 { 707 rfs4_servinst_t *sip; 708 709 mutex_enter(&rfs4_servinst_lock); 710 for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) 711 if (rfs4_servinst_grace_new(sip)) 712 rfs4_grace_start(sip); 713 mutex_exit(&rfs4_servinst_lock); 714 } 715 716 static rfs4_dss_path_t * 717 rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) 718 { 719 size_t len; 720 rfs4_dss_path_t *dss_path; 721 722 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); 723 724 /* 725 * Take a copy of the string, since the original may be overwritten. 726 * Sadly, no strdup() in the kernel. 727 */ 728 /* allow for NUL */ 729 len = strlen(path) + 1; 730 dss_path->path = kmem_alloc(len, KM_SLEEP); 731 (void) strlcpy(dss_path->path, path, len); 732 733 /* associate with servinst */ 734 dss_path->sip = sip; 735 dss_path->index = index; 736 737 /* 738 * Add to list of served paths. 739 * No locking required, as we're only ever called at startup. 740 */ 741 if (rfs4_dss_pathlist == NULL) { 742 /* this is the first dss_path_t */ 743 744 /* needed for insque/remque */ 745 dss_path->next = dss_path->prev = dss_path; 746 747 rfs4_dss_pathlist = dss_path; 748 } else { 749 insque(dss_path, rfs4_dss_pathlist); 750 } 751 752 return (dss_path); 753 } 754 755 /* 756 * Create a new server instance, and make it the currently active instance. 757 * Note that starting the grace period too early will reduce the clients' 758 * recovery window. 759 */ 760 void 761 rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) 762 { 763 unsigned i; 764 rfs4_servinst_t *sip; 765 rfs4_oldstate_t *oldstate; 766 767 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); 768 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); 769 770 sip->start_time = (time_t)0; 771 sip->grace_period = (time_t)0; 772 sip->next = NULL; 773 sip->prev = NULL; 774 775 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); 776 /* 777 * This initial dummy entry is required to setup for insque/remque. 778 * It must be skipped over whenever the list is traversed. 779 */ 780 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); 781 /* insque/remque require initial list entry to be self-terminated */ 782 oldstate->next = oldstate; 783 oldstate->prev = oldstate; 784 sip->oldstate = oldstate; 785 786 787 sip->dss_npaths = dss_npaths; 788 sip->dss_paths = kmem_alloc(dss_npaths * 789 sizeof (rfs4_dss_path_t *), KM_SLEEP); 790 791 for (i = 0; i < dss_npaths; i++) { 792 sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); 793 } 794 795 mutex_enter(&rfs4_servinst_lock); 796 if (rfs4_cur_servinst != NULL) { 797 /* add to linked list */ 798 sip->prev = rfs4_cur_servinst; 799 rfs4_cur_servinst->next = sip; 800 } 801 if (start_grace) 802 rfs4_grace_start(sip); 803 /* make the new instance "current" */ 804 rfs4_cur_servinst = sip; 805 806 mutex_exit(&rfs4_servinst_lock); 807 } 808 809 /* 810 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy 811 * all instances directly. 812 */ 813 void 814 rfs4_servinst_destroy_all(void) 815 { 816 rfs4_servinst_t *sip, *prev, *current; 817 #ifdef DEBUG 818 int n = 0; 819 #endif 820 821 mutex_enter(&rfs4_servinst_lock); 822 ASSERT(rfs4_cur_servinst != NULL); 823 current = rfs4_cur_servinst; 824 rfs4_cur_servinst = NULL; 825 for (sip = current; sip != NULL; sip = prev) { 826 prev = sip->prev; 827 rw_destroy(&sip->rwlock); 828 if (sip->oldstate) 829 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); 830 if (sip->dss_paths) 831 kmem_free(sip->dss_paths, 832 sip->dss_npaths * sizeof (rfs4_dss_path_t *)); 833 kmem_free(sip, sizeof (rfs4_servinst_t)); 834 #ifdef DEBUG 835 n++; 836 #endif 837 } 838 mutex_exit(&rfs4_servinst_lock); 839 } 840 841 /* 842 * Assign the current server instance to a client_t. 843 * Should be called with cp->rc_dbe held. 844 */ 845 void 846 rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) 847 { 848 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 849 850 /* 851 * The lock ensures that if the current instance is in the process 852 * of changing, we will see the new one. 853 */ 854 mutex_enter(&rfs4_servinst_lock); 855 cp->rc_server_instance = sip; 856 mutex_exit(&rfs4_servinst_lock); 857 } 858 859 rfs4_servinst_t * 860 rfs4_servinst(rfs4_client_t *cp) 861 { 862 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); 863 864 return (cp->rc_server_instance); 865 } 866 867 /* ARGSUSED */ 868 static void 869 nullfree(caddr_t resop) 870 { 871 } 872 873 /* 874 * This is a fall-through for invalid or not implemented (yet) ops 875 */ 876 /* ARGSUSED */ 877 static void 878 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 879 struct compound_state *cs) 880 { 881 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; 882 } 883 884 /* 885 * Check if the security flavor, nfsnum, is in the flavor_list. 886 */ 887 bool_t 888 in_flavor_list(int nfsnum, int *flavor_list, int count) 889 { 890 int i; 891 892 for (i = 0; i < count; i++) { 893 if (nfsnum == flavor_list[i]) 894 return (TRUE); 895 } 896 return (FALSE); 897 } 898 899 /* 900 * Used by rfs4_op_secinfo to get the security information from the 901 * export structure associated with the component. 902 */ 903 /* ARGSUSED */ 904 static nfsstat4 905 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) 906 { 907 int error, different_export = 0; 908 vnode_t *dvp, *vp; 909 struct exportinfo *exi = NULL; 910 fid_t fid; 911 uint_t count, i; 912 secinfo4 *resok_val; 913 struct secinfo *secp; 914 seconfig_t *si; 915 bool_t did_traverse = FALSE; 916 int dotdot, walk; 917 918 dvp = cs->vp; 919 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 920 921 /* 922 * If dotdotting, then need to check whether it's above the 923 * root of a filesystem, or above an export point. 924 */ 925 if (dotdot) { 926 927 /* 928 * If dotdotting at the root of a filesystem, then 929 * need to traverse back to the mounted-on filesystem 930 * and do the dotdot lookup there. 931 */ 932 if (cs->vp->v_flag & VROOT) { 933 934 /* 935 * If at the system root, then can 936 * go up no further. 937 */ 938 if (VN_CMP(dvp, rootdir)) 939 return (puterrno4(ENOENT)); 940 941 /* 942 * Traverse back to the mounted-on filesystem 943 */ 944 dvp = untraverse(cs->vp); 945 946 /* 947 * Set the different_export flag so we remember 948 * to pick up a new exportinfo entry for 949 * this new filesystem. 950 */ 951 different_export = 1; 952 } else { 953 954 /* 955 * If dotdotting above an export point then set 956 * the different_export to get new export info. 957 */ 958 different_export = nfs_exported(cs->exi, cs->vp); 959 } 960 } 961 962 /* 963 * Get the vnode for the component "nm". 964 */ 965 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, 966 NULL, NULL, NULL); 967 if (error) 968 return (puterrno4(error)); 969 970 /* 971 * If the vnode is in a pseudo filesystem, or if the security flavor 972 * used in the request is valid but not an explicitly shared flavor, 973 * or the access bit indicates that this is a limited access, 974 * check whether this vnode is visible. 975 */ 976 if (!different_export && 977 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 978 cs->access & CS_ACCESS_LIMITED)) { 979 if (! nfs_visible(cs->exi, vp, &different_export)) { 980 VN_RELE(vp); 981 return (puterrno4(ENOENT)); 982 } 983 } 984 985 /* 986 * If it's a mountpoint, then traverse it. 987 */ 988 if (vn_ismntpt(vp)) { 989 if ((error = traverse(&vp)) != 0) { 990 VN_RELE(vp); 991 return (puterrno4(error)); 992 } 993 /* remember that we had to traverse mountpoint */ 994 did_traverse = TRUE; 995 different_export = 1; 996 } else if (vp->v_vfsp != dvp->v_vfsp) { 997 /* 998 * If vp isn't a mountpoint and the vfs ptrs aren't the same, 999 * then vp is probably an LOFS object. We don't need the 1000 * realvp, we just need to know that we might have crossed 1001 * a server fs boundary and need to call checkexport4. 1002 * (LOFS lookup hides server fs mountpoints, and actually calls 1003 * traverse) 1004 */ 1005 different_export = 1; 1006 } 1007 1008 /* 1009 * Get the export information for it. 1010 */ 1011 if (different_export) { 1012 1013 bzero(&fid, sizeof (fid)); 1014 fid.fid_len = MAXFIDSZ; 1015 error = vop_fid_pseudo(vp, &fid); 1016 if (error) { 1017 VN_RELE(vp); 1018 return (puterrno4(error)); 1019 } 1020 1021 if (dotdot) 1022 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 1023 else 1024 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 1025 1026 if (exi == NULL) { 1027 if (did_traverse == TRUE) { 1028 /* 1029 * If this vnode is a mounted-on vnode, 1030 * but the mounted-on file system is not 1031 * exported, send back the secinfo for 1032 * the exported node that the mounted-on 1033 * vnode lives in. 1034 */ 1035 exi = cs->exi; 1036 } else { 1037 VN_RELE(vp); 1038 return (puterrno4(EACCES)); 1039 } 1040 } 1041 } else { 1042 exi = cs->exi; 1043 } 1044 ASSERT(exi != NULL); 1045 1046 1047 /* 1048 * Create the secinfo result based on the security information 1049 * from the exportinfo structure (exi). 1050 * 1051 * Return all flavors for a pseudo node. 1052 * For a real export node, return the flavor that the client 1053 * has access with. 1054 */ 1055 ASSERT(RW_LOCK_HELD(&exported_lock)); 1056 if (PSEUDO(exi)) { 1057 count = exi->exi_export.ex_seccnt; /* total sec count */ 1058 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); 1059 secp = exi->exi_export.ex_secinfo; 1060 1061 for (i = 0; i < count; i++) { 1062 si = &secp[i].s_secinfo; 1063 resok_val[i].flavor = si->sc_rpcnum; 1064 if (resok_val[i].flavor == RPCSEC_GSS) { 1065 rpcsec_gss_info *info; 1066 1067 info = &resok_val[i].flavor_info; 1068 info->qop = si->sc_qop; 1069 info->service = (rpc_gss_svc_t)si->sc_service; 1070 1071 /* get oid opaque data */ 1072 info->oid.sec_oid4_len = 1073 si->sc_gss_mech_type->length; 1074 info->oid.sec_oid4_val = kmem_alloc( 1075 si->sc_gss_mech_type->length, KM_SLEEP); 1076 bcopy( 1077 si->sc_gss_mech_type->elements, 1078 info->oid.sec_oid4_val, 1079 info->oid.sec_oid4_len); 1080 } 1081 } 1082 resp->SECINFO4resok_len = count; 1083 resp->SECINFO4resok_val = resok_val; 1084 } else { 1085 int ret_cnt = 0, k = 0; 1086 int *flavor_list; 1087 1088 count = exi->exi_export.ex_seccnt; /* total sec count */ 1089 secp = exi->exi_export.ex_secinfo; 1090 1091 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); 1092 /* find out which flavors to return */ 1093 for (i = 0; i < count; i ++) { 1094 int access, flavor, perm; 1095 1096 flavor = secp[i].s_secinfo.sc_nfsnum; 1097 perm = secp[i].s_flags; 1098 1099 access = nfsauth4_secinfo_access(exi, cs->req, 1100 flavor, perm, cs->basecr); 1101 1102 if (! (access & NFSAUTH_DENIED) && 1103 ! (access & NFSAUTH_WRONGSEC)) { 1104 flavor_list[ret_cnt] = flavor; 1105 ret_cnt++; 1106 } 1107 } 1108 1109 /* Create the returning SECINFO value */ 1110 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); 1111 1112 for (i = 0; i < count; i++) { 1113 /* 1114 * If the flavor is in the flavor list, 1115 * fill in resok_val. 1116 */ 1117 si = &secp[i].s_secinfo; 1118 if (in_flavor_list(si->sc_nfsnum, 1119 flavor_list, ret_cnt)) { 1120 resok_val[k].flavor = si->sc_rpcnum; 1121 if (resok_val[k].flavor == RPCSEC_GSS) { 1122 rpcsec_gss_info *info; 1123 1124 info = &resok_val[k].flavor_info; 1125 info->qop = si->sc_qop; 1126 info->service = (rpc_gss_svc_t) 1127 si->sc_service; 1128 1129 /* get oid opaque data */ 1130 info->oid.sec_oid4_len = 1131 si->sc_gss_mech_type->length; 1132 info->oid.sec_oid4_val = kmem_alloc( 1133 si->sc_gss_mech_type->length, 1134 KM_SLEEP); 1135 bcopy(si->sc_gss_mech_type->elements, 1136 info->oid.sec_oid4_val, 1137 info->oid.sec_oid4_len); 1138 } 1139 k++; 1140 } 1141 if (k >= ret_cnt) 1142 break; 1143 } 1144 resp->SECINFO4resok_len = ret_cnt; 1145 resp->SECINFO4resok_val = resok_val; 1146 kmem_free(flavor_list, count * sizeof (int)); 1147 } 1148 1149 VN_RELE(vp); 1150 return (NFS4_OK); 1151 } 1152 1153 /* 1154 * SECINFO (Operation 33): Obtain required security information on 1155 * the component name in the format of (security-mechanism-oid, qop, service) 1156 * triplets. 1157 */ 1158 /* ARGSUSED */ 1159 static void 1160 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1161 struct compound_state *cs) 1162 { 1163 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; 1164 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1165 utf8string *utfnm = &args->name; 1166 uint_t len; 1167 char *nm; 1168 struct sockaddr *ca; 1169 char *name = NULL; 1170 nfsstat4 status = NFS4_OK; 1171 1172 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, 1173 SECINFO4args *, args); 1174 1175 /* 1176 * Current file handle (cfh) should have been set before getting 1177 * into this function. If not, return error. 1178 */ 1179 if (cs->vp == NULL) { 1180 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1181 goto out; 1182 } 1183 1184 if (cs->vp->v_type != VDIR) { 1185 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1186 goto out; 1187 } 1188 1189 /* 1190 * Verify the component name. If failed, error out, but 1191 * do not error out if the component name is a "..". 1192 * SECINFO will return its parents secinfo data for SECINFO "..". 1193 */ 1194 status = utf8_dir_verify(utfnm); 1195 if (status != NFS4_OK) { 1196 if (utfnm->utf8string_len != 2 || 1197 utfnm->utf8string_val[0] != '.' || 1198 utfnm->utf8string_val[1] != '.') { 1199 *cs->statusp = resp->status = status; 1200 goto out; 1201 } 1202 } 1203 1204 nm = utf8_to_str(utfnm, &len, NULL); 1205 if (nm == NULL) { 1206 *cs->statusp = resp->status = NFS4ERR_INVAL; 1207 goto out; 1208 } 1209 1210 if (len > MAXNAMELEN) { 1211 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1212 kmem_free(nm, len); 1213 goto out; 1214 } 1215 1216 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1217 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1218 MAXPATHLEN + 1); 1219 1220 if (name == NULL) { 1221 *cs->statusp = resp->status = NFS4ERR_INVAL; 1222 kmem_free(nm, len); 1223 goto out; 1224 } 1225 1226 1227 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); 1228 1229 if (name != nm) 1230 kmem_free(name, MAXPATHLEN + 1); 1231 kmem_free(nm, len); 1232 1233 out: 1234 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, 1235 SECINFO4res *, resp); 1236 } 1237 1238 /* 1239 * Free SECINFO result. 1240 */ 1241 /* ARGSUSED */ 1242 static void 1243 rfs4_op_secinfo_free(nfs_resop4 *resop) 1244 { 1245 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; 1246 int count, i; 1247 secinfo4 *resok_val; 1248 1249 /* If this is not an Ok result, nothing to free. */ 1250 if (resp->status != NFS4_OK) { 1251 return; 1252 } 1253 1254 count = resp->SECINFO4resok_len; 1255 resok_val = resp->SECINFO4resok_val; 1256 1257 for (i = 0; i < count; i++) { 1258 if (resok_val[i].flavor == RPCSEC_GSS) { 1259 rpcsec_gss_info *info; 1260 1261 info = &resok_val[i].flavor_info; 1262 kmem_free(info->oid.sec_oid4_val, 1263 info->oid.sec_oid4_len); 1264 } 1265 } 1266 kmem_free(resok_val, count * sizeof (secinfo4)); 1267 resp->SECINFO4resok_len = 0; 1268 resp->SECINFO4resok_val = NULL; 1269 } 1270 1271 /* ARGSUSED */ 1272 static void 1273 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1274 struct compound_state *cs) 1275 { 1276 ACCESS4args *args = &argop->nfs_argop4_u.opaccess; 1277 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; 1278 int error; 1279 vnode_t *vp; 1280 struct vattr va; 1281 int checkwriteperm; 1282 cred_t *cr = cs->cr; 1283 bslabel_t *clabel, *slabel; 1284 ts_label_t *tslabel; 1285 boolean_t admin_low_client; 1286 1287 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, 1288 ACCESS4args *, args); 1289 1290 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ 1291 if (cs->access == CS_ACCESS_DENIED) { 1292 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1293 goto out; 1294 } 1295 #endif 1296 if (cs->vp == NULL) { 1297 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1298 goto out; 1299 } 1300 1301 ASSERT(cr != NULL); 1302 1303 vp = cs->vp; 1304 1305 /* 1306 * If the file system is exported read only, it is not appropriate 1307 * to check write permissions for regular files and directories. 1308 * Special files are interpreted by the client, so the underlying 1309 * permissions are sent back to the client for interpretation. 1310 */ 1311 if (rdonly4(req, cs) && 1312 (vp->v_type == VREG || vp->v_type == VDIR)) 1313 checkwriteperm = 0; 1314 else 1315 checkwriteperm = 1; 1316 1317 /* 1318 * XXX 1319 * We need the mode so that we can correctly determine access 1320 * permissions relative to a mandatory lock file. Access to 1321 * mandatory lock files is denied on the server, so it might 1322 * as well be reflected to the server during the open. 1323 */ 1324 va.va_mask = AT_MODE; 1325 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1326 if (error) { 1327 *cs->statusp = resp->status = puterrno4(error); 1328 goto out; 1329 } 1330 resp->access = 0; 1331 resp->supported = 0; 1332 1333 if (is_system_labeled()) { 1334 ASSERT(req->rq_label != NULL); 1335 clabel = req->rq_label; 1336 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, 1337 "got client label from request(1)", 1338 struct svc_req *, req); 1339 if (!blequal(&l_admin_low->tsl_label, clabel)) { 1340 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { 1341 *cs->statusp = resp->status = puterrno4(EACCES); 1342 goto out; 1343 } 1344 slabel = label2bslabel(tslabel); 1345 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, 1346 char *, "got server label(1) for vp(2)", 1347 bslabel_t *, slabel, vnode_t *, vp); 1348 1349 admin_low_client = B_FALSE; 1350 } else 1351 admin_low_client = B_TRUE; 1352 } 1353 1354 if (args->access & ACCESS4_READ) { 1355 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); 1356 if (!error && !MANDLOCK(vp, va.va_mode) && 1357 (!is_system_labeled() || admin_low_client || 1358 bldominates(clabel, slabel))) 1359 resp->access |= ACCESS4_READ; 1360 resp->supported |= ACCESS4_READ; 1361 } 1362 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { 1363 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1364 if (!error && (!is_system_labeled() || admin_low_client || 1365 bldominates(clabel, slabel))) 1366 resp->access |= ACCESS4_LOOKUP; 1367 resp->supported |= ACCESS4_LOOKUP; 1368 } 1369 if (checkwriteperm && 1370 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { 1371 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1372 if (!error && !MANDLOCK(vp, va.va_mode) && 1373 (!is_system_labeled() || admin_low_client || 1374 blequal(clabel, slabel))) 1375 resp->access |= 1376 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); 1377 resp->supported |= 1378 resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND); 1379 } 1380 1381 if (checkwriteperm && 1382 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { 1383 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 1384 if (!error && (!is_system_labeled() || admin_low_client || 1385 blequal(clabel, slabel))) 1386 resp->access |= ACCESS4_DELETE; 1387 resp->supported |= ACCESS4_DELETE; 1388 } 1389 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { 1390 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); 1391 if (!error && !MANDLOCK(vp, va.va_mode) && 1392 (!is_system_labeled() || admin_low_client || 1393 bldominates(clabel, slabel))) 1394 resp->access |= ACCESS4_EXECUTE; 1395 resp->supported |= ACCESS4_EXECUTE; 1396 } 1397 1398 if (is_system_labeled() && !admin_low_client) 1399 label_rele(tslabel); 1400 1401 *cs->statusp = resp->status = NFS4_OK; 1402 out: 1403 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, 1404 ACCESS4res *, resp); 1405 } 1406 1407 /* ARGSUSED */ 1408 static void 1409 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1410 struct compound_state *cs) 1411 { 1412 COMMIT4args *args = &argop->nfs_argop4_u.opcommit; 1413 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; 1414 int error; 1415 vnode_t *vp = cs->vp; 1416 cred_t *cr = cs->cr; 1417 vattr_t va; 1418 1419 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, 1420 COMMIT4args *, args); 1421 1422 if (vp == NULL) { 1423 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1424 goto out; 1425 } 1426 if (cs->access == CS_ACCESS_DENIED) { 1427 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1428 goto out; 1429 } 1430 1431 if (args->offset + args->count < args->offset) { 1432 *cs->statusp = resp->status = NFS4ERR_INVAL; 1433 goto out; 1434 } 1435 1436 va.va_mask = AT_UID; 1437 error = VOP_GETATTR(vp, &va, 0, cr, NULL); 1438 1439 /* 1440 * If we can't get the attributes, then we can't do the 1441 * right access checking. So, we'll fail the request. 1442 */ 1443 if (error) { 1444 *cs->statusp = resp->status = puterrno4(error); 1445 goto out; 1446 } 1447 if (rdonly4(req, cs)) { 1448 *cs->statusp = resp->status = NFS4ERR_ROFS; 1449 goto out; 1450 } 1451 1452 if (vp->v_type != VREG) { 1453 if (vp->v_type == VDIR) 1454 resp->status = NFS4ERR_ISDIR; 1455 else 1456 resp->status = NFS4ERR_INVAL; 1457 *cs->statusp = resp->status; 1458 goto out; 1459 } 1460 1461 if (crgetuid(cr) != va.va_uid && 1462 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { 1463 *cs->statusp = resp->status = puterrno4(error); 1464 goto out; 1465 } 1466 1467 error = VOP_FSYNC(vp, FSYNC, cr, NULL); 1468 1469 if (error) { 1470 *cs->statusp = resp->status = puterrno4(error); 1471 goto out; 1472 } 1473 1474 *cs->statusp = resp->status = NFS4_OK; 1475 resp->writeverf = Write4verf; 1476 out: 1477 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, 1478 COMMIT4res *, resp); 1479 } 1480 1481 /* 1482 * rfs4_op_mknod is called from rfs4_op_create after all initial verification 1483 * was completed. It does the nfsv4 create for special files. 1484 */ 1485 /* ARGSUSED */ 1486 static vnode_t * 1487 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, 1488 struct compound_state *cs, vattr_t *vap, char *nm) 1489 { 1490 int error; 1491 cred_t *cr = cs->cr; 1492 vnode_t *dvp = cs->vp; 1493 vnode_t *vp = NULL; 1494 int mode; 1495 enum vcexcl excl; 1496 1497 switch (args->type) { 1498 case NF4CHR: 1499 case NF4BLK: 1500 if (secpolicy_sys_devices(cr) != 0) { 1501 *cs->statusp = resp->status = NFS4ERR_PERM; 1502 return (NULL); 1503 } 1504 if (args->type == NF4CHR) 1505 vap->va_type = VCHR; 1506 else 1507 vap->va_type = VBLK; 1508 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, 1509 args->ftype4_u.devdata.specdata2); 1510 vap->va_mask |= AT_RDEV; 1511 break; 1512 case NF4SOCK: 1513 vap->va_type = VSOCK; 1514 break; 1515 case NF4FIFO: 1516 vap->va_type = VFIFO; 1517 break; 1518 default: 1519 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1520 return (NULL); 1521 } 1522 1523 /* 1524 * Must specify the mode. 1525 */ 1526 if (!(vap->va_mask & AT_MODE)) { 1527 *cs->statusp = resp->status = NFS4ERR_INVAL; 1528 return (NULL); 1529 } 1530 1531 excl = EXCL; 1532 1533 mode = 0; 1534 1535 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); 1536 if (error) { 1537 *cs->statusp = resp->status = puterrno4(error); 1538 return (NULL); 1539 } 1540 return (vp); 1541 } 1542 1543 /* 1544 * nfsv4 create is used to create non-regular files. For regular files, 1545 * use nfsv4 open. 1546 */ 1547 /* ARGSUSED */ 1548 static void 1549 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1550 struct compound_state *cs) 1551 { 1552 CREATE4args *args = &argop->nfs_argop4_u.opcreate; 1553 CREATE4res *resp = &resop->nfs_resop4_u.opcreate; 1554 int error; 1555 struct vattr bva, iva, iva2, ava, *vap; 1556 cred_t *cr = cs->cr; 1557 vnode_t *dvp = cs->vp; 1558 vnode_t *vp = NULL; 1559 vnode_t *realvp; 1560 char *nm, *lnm; 1561 uint_t len, llen; 1562 int syncval = 0; 1563 struct nfs4_svgetit_arg sarg; 1564 struct nfs4_ntov_table ntov; 1565 struct statvfs64 sb; 1566 nfsstat4 status; 1567 struct sockaddr *ca; 1568 char *name = NULL; 1569 char *lname = NULL; 1570 1571 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, 1572 CREATE4args *, args); 1573 1574 resp->attrset = 0; 1575 1576 if (dvp == NULL) { 1577 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 1578 goto out; 1579 } 1580 1581 /* 1582 * If there is an unshared filesystem mounted on this vnode, 1583 * do not allow to create an object in this directory. 1584 */ 1585 if (vn_ismntpt(dvp)) { 1586 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1587 goto out; 1588 } 1589 1590 /* Verify that type is correct */ 1591 switch (args->type) { 1592 case NF4LNK: 1593 case NF4BLK: 1594 case NF4CHR: 1595 case NF4SOCK: 1596 case NF4FIFO: 1597 case NF4DIR: 1598 break; 1599 default: 1600 *cs->statusp = resp->status = NFS4ERR_BADTYPE; 1601 goto out; 1602 }; 1603 1604 if (cs->access == CS_ACCESS_DENIED) { 1605 *cs->statusp = resp->status = NFS4ERR_ACCESS; 1606 goto out; 1607 } 1608 if (dvp->v_type != VDIR) { 1609 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 1610 goto out; 1611 } 1612 status = utf8_dir_verify(&args->objname); 1613 if (status != NFS4_OK) { 1614 *cs->statusp = resp->status = status; 1615 goto out; 1616 } 1617 1618 if (rdonly4(req, cs)) { 1619 *cs->statusp = resp->status = NFS4ERR_ROFS; 1620 goto out; 1621 } 1622 1623 /* 1624 * Name of newly created object 1625 */ 1626 nm = utf8_to_fn(&args->objname, &len, NULL); 1627 if (nm == NULL) { 1628 *cs->statusp = resp->status = NFS4ERR_INVAL; 1629 goto out; 1630 } 1631 1632 if (len > MAXNAMELEN) { 1633 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1634 kmem_free(nm, len); 1635 goto out; 1636 } 1637 1638 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 1639 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 1640 MAXPATHLEN + 1); 1641 1642 if (name == NULL) { 1643 *cs->statusp = resp->status = NFS4ERR_INVAL; 1644 kmem_free(nm, len); 1645 goto out; 1646 } 1647 1648 resp->attrset = 0; 1649 1650 sarg.sbp = &sb; 1651 sarg.is_referral = B_FALSE; 1652 nfs4_ntov_table_init(&ntov); 1653 1654 status = do_rfs4_set_attrs(&resp->attrset, 1655 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); 1656 1657 if (sarg.vap->va_mask == 0 && status == NFS4_OK) 1658 status = NFS4ERR_INVAL; 1659 1660 if (status != NFS4_OK) { 1661 *cs->statusp = resp->status = status; 1662 if (name != nm) 1663 kmem_free(name, MAXPATHLEN + 1); 1664 kmem_free(nm, len); 1665 nfs4_ntov_table_free(&ntov, &sarg); 1666 resp->attrset = 0; 1667 goto out; 1668 } 1669 1670 /* Get "before" change value */ 1671 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; 1672 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); 1673 if (error) { 1674 *cs->statusp = resp->status = puterrno4(error); 1675 if (name != nm) 1676 kmem_free(name, MAXPATHLEN + 1); 1677 kmem_free(nm, len); 1678 nfs4_ntov_table_free(&ntov, &sarg); 1679 resp->attrset = 0; 1680 goto out; 1681 } 1682 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) 1683 1684 vap = sarg.vap; 1685 1686 /* 1687 * Set the default initial values for attributes when the parent 1688 * directory does not have the VSUID/VSGID bit set and they have 1689 * not been specified in createattrs. 1690 */ 1691 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { 1692 vap->va_uid = crgetuid(cr); 1693 vap->va_mask |= AT_UID; 1694 } 1695 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { 1696 vap->va_gid = crgetgid(cr); 1697 vap->va_mask |= AT_GID; 1698 } 1699 1700 vap->va_mask |= AT_TYPE; 1701 switch (args->type) { 1702 case NF4DIR: 1703 vap->va_type = VDIR; 1704 if ((vap->va_mask & AT_MODE) == 0) { 1705 vap->va_mode = 0700; /* default: owner rwx only */ 1706 vap->va_mask |= AT_MODE; 1707 } 1708 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); 1709 if (error) 1710 break; 1711 1712 /* 1713 * Get the initial "after" sequence number, if it fails, 1714 * set to zero 1715 */ 1716 iva.va_mask = AT_SEQ; 1717 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1718 iva.va_seq = 0; 1719 break; 1720 case NF4LNK: 1721 vap->va_type = VLNK; 1722 if ((vap->va_mask & AT_MODE) == 0) { 1723 vap->va_mode = 0700; /* default: owner rwx only */ 1724 vap->va_mask |= AT_MODE; 1725 } 1726 1727 /* 1728 * symlink names must be treated as data 1729 */ 1730 lnm = utf8_to_str((utf8string *)&args->ftype4_u.linkdata, 1731 &llen, NULL); 1732 1733 if (lnm == NULL) { 1734 *cs->statusp = resp->status = NFS4ERR_INVAL; 1735 if (name != nm) 1736 kmem_free(name, MAXPATHLEN + 1); 1737 kmem_free(nm, len); 1738 nfs4_ntov_table_free(&ntov, &sarg); 1739 resp->attrset = 0; 1740 goto out; 1741 } 1742 1743 if (llen > MAXPATHLEN) { 1744 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 1745 if (name != nm) 1746 kmem_free(name, MAXPATHLEN + 1); 1747 kmem_free(nm, len); 1748 kmem_free(lnm, llen); 1749 nfs4_ntov_table_free(&ntov, &sarg); 1750 resp->attrset = 0; 1751 goto out; 1752 } 1753 1754 lname = nfscmd_convname(ca, cs->exi, lnm, 1755 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); 1756 1757 if (lname == NULL) { 1758 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 1759 if (name != nm) 1760 kmem_free(name, MAXPATHLEN + 1); 1761 kmem_free(nm, len); 1762 kmem_free(lnm, llen); 1763 nfs4_ntov_table_free(&ntov, &sarg); 1764 resp->attrset = 0; 1765 goto out; 1766 } 1767 1768 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); 1769 if (lname != lnm) 1770 kmem_free(lname, MAXPATHLEN + 1); 1771 kmem_free(lnm, llen); 1772 if (error) 1773 break; 1774 1775 /* 1776 * Get the initial "after" sequence number, if it fails, 1777 * set to zero 1778 */ 1779 iva.va_mask = AT_SEQ; 1780 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1781 iva.va_seq = 0; 1782 1783 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, 1784 NULL, NULL, NULL); 1785 if (error) 1786 break; 1787 1788 /* 1789 * va_seq is not safe over VOP calls, check it again 1790 * if it has changed zero out iva to force atomic = FALSE. 1791 */ 1792 iva2.va_mask = AT_SEQ; 1793 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || 1794 iva2.va_seq != iva.va_seq) 1795 iva.va_seq = 0; 1796 break; 1797 default: 1798 /* 1799 * probably a special file. 1800 */ 1801 if ((vap->va_mask & AT_MODE) == 0) { 1802 vap->va_mode = 0600; /* default: owner rw only */ 1803 vap->va_mask |= AT_MODE; 1804 } 1805 syncval = FNODSYNC; 1806 /* 1807 * We know this will only generate one VOP call 1808 */ 1809 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); 1810 1811 if (vp == NULL) { 1812 if (name != nm) 1813 kmem_free(name, MAXPATHLEN + 1); 1814 kmem_free(nm, len); 1815 nfs4_ntov_table_free(&ntov, &sarg); 1816 resp->attrset = 0; 1817 goto out; 1818 } 1819 1820 /* 1821 * Get the initial "after" sequence number, if it fails, 1822 * set to zero 1823 */ 1824 iva.va_mask = AT_SEQ; 1825 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) 1826 iva.va_seq = 0; 1827 1828 break; 1829 } 1830 if (name != nm) 1831 kmem_free(name, MAXPATHLEN + 1); 1832 kmem_free(nm, len); 1833 1834 if (error) { 1835 *cs->statusp = resp->status = puterrno4(error); 1836 } 1837 1838 /* 1839 * Force modified data and metadata out to stable storage. 1840 */ 1841 (void) VOP_FSYNC(dvp, 0, cr, NULL); 1842 1843 if (resp->status != NFS4_OK) { 1844 if (vp != NULL) 1845 VN_RELE(vp); 1846 nfs4_ntov_table_free(&ntov, &sarg); 1847 resp->attrset = 0; 1848 goto out; 1849 } 1850 1851 /* 1852 * Finish setup of cinfo response, "before" value already set. 1853 * Get "after" change value, if it fails, simply return the 1854 * before value. 1855 */ 1856 ava.va_mask = AT_CTIME|AT_SEQ; 1857 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { 1858 ava.va_ctime = bva.va_ctime; 1859 ava.va_seq = 0; 1860 } 1861 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); 1862 1863 /* 1864 * True verification that object was created with correct 1865 * attrs is impossible. The attrs could have been changed 1866 * immediately after object creation. If attributes did 1867 * not verify, the only recourse for the server is to 1868 * destroy the object. Maybe if some attrs (like gid) 1869 * are set incorrectly, the object should be destroyed; 1870 * however, seems bad as a default policy. Do we really 1871 * want to destroy an object over one of the times not 1872 * verifying correctly? For these reasons, the server 1873 * currently sets bits in attrset for createattrs 1874 * that were set; however, no verification is done. 1875 * 1876 * vmask_to_nmask accounts for vattr bits set on create 1877 * [do_rfs4_set_attrs() only sets resp bits for 1878 * non-vattr/vfs bits.] 1879 * Mask off any bits set by default so as not to return 1880 * more attrset bits than were requested in createattrs 1881 */ 1882 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); 1883 resp->attrset &= args->createattrs.attrmask; 1884 nfs4_ntov_table_free(&ntov, &sarg); 1885 1886 error = makefh4(&cs->fh, vp, cs->exi); 1887 if (error) { 1888 *cs->statusp = resp->status = puterrno4(error); 1889 } 1890 1891 /* 1892 * The cinfo.atomic = TRUE only if we got no errors, we have 1893 * non-zero va_seq's, and it has incremented by exactly one 1894 * during the creation and it didn't change during the VOP_LOOKUP 1895 * or VOP_FSYNC. 1896 */ 1897 if (!error && bva.va_seq && iva.va_seq && ava.va_seq && 1898 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 1899 resp->cinfo.atomic = TRUE; 1900 else 1901 resp->cinfo.atomic = FALSE; 1902 1903 /* 1904 * Force modified metadata out to stable storage. 1905 * 1906 * if a underlying vp exists, pass it to VOP_FSYNC 1907 */ 1908 if (VOP_REALVP(vp, &realvp, NULL) == 0) 1909 (void) VOP_FSYNC(realvp, syncval, cr, NULL); 1910 else 1911 (void) VOP_FSYNC(vp, syncval, cr, NULL); 1912 1913 if (resp->status != NFS4_OK) { 1914 VN_RELE(vp); 1915 goto out; 1916 } 1917 if (cs->vp) 1918 VN_RELE(cs->vp); 1919 1920 cs->vp = vp; 1921 *cs->statusp = resp->status = NFS4_OK; 1922 out: 1923 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, 1924 CREATE4res *, resp); 1925 } 1926 1927 /*ARGSUSED*/ 1928 static void 1929 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1930 struct compound_state *cs) 1931 { 1932 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, 1933 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); 1934 1935 rfs4_op_inval(argop, resop, req, cs); 1936 1937 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, 1938 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); 1939 } 1940 1941 /*ARGSUSED*/ 1942 static void 1943 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 1944 struct compound_state *cs) 1945 { 1946 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; 1947 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; 1948 rfs4_deleg_state_t *dsp; 1949 nfsstat4 status; 1950 1951 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, 1952 DELEGRETURN4args *, args); 1953 1954 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); 1955 resp->status = *cs->statusp = status; 1956 if (status != NFS4_OK) 1957 goto out; 1958 1959 /* Ensure specified filehandle matches */ 1960 if (cs->vp != dsp->rds_finfo->rf_vp) { 1961 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; 1962 } else 1963 rfs4_return_deleg(dsp, FALSE); 1964 1965 rfs4_update_lease(dsp->rds_client); 1966 1967 rfs4_deleg_state_rele(dsp); 1968 out: 1969 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, 1970 DELEGRETURN4res *, resp); 1971 } 1972 1973 /* 1974 * Check to see if a given "flavor" is an explicitly shared flavor. 1975 * The assumption of this routine is the "flavor" is already a valid 1976 * flavor in the secinfo list of "exi". 1977 * 1978 * e.g. 1979 * # share -o sec=flavor1 /export 1980 * # share -o sec=flavor2 /export/home 1981 * 1982 * flavor2 is not an explicitly shared flavor for /export, 1983 * however it is in the secinfo list for /export thru the 1984 * server namespace setup. 1985 */ 1986 int 1987 is_exported_sec(int flavor, struct exportinfo *exi) 1988 { 1989 int i; 1990 struct secinfo *sp; 1991 1992 sp = exi->exi_export.ex_secinfo; 1993 for (i = 0; i < exi->exi_export.ex_seccnt; i++) { 1994 if (flavor == sp[i].s_secinfo.sc_nfsnum || 1995 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { 1996 return (SEC_REF_EXPORTED(&sp[i])); 1997 } 1998 } 1999 2000 /* Should not reach this point based on the assumption */ 2001 return (0); 2002 } 2003 2004 /* 2005 * Check if the security flavor used in the request matches what is 2006 * required at the export point or at the root pseudo node (exi_root). 2007 * 2008 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. 2009 * 2010 */ 2011 static int 2012 secinfo_match_or_authnone(struct compound_state *cs) 2013 { 2014 int i; 2015 struct secinfo *sp; 2016 2017 /* 2018 * Check cs->nfsflavor (from the request) against 2019 * the current export data in cs->exi. 2020 */ 2021 sp = cs->exi->exi_export.ex_secinfo; 2022 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { 2023 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || 2024 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) 2025 return (1); 2026 } 2027 2028 return (0); 2029 } 2030 2031 /* 2032 * Check the access authority for the client and return the correct error. 2033 */ 2034 nfsstat4 2035 call_checkauth4(struct compound_state *cs, struct svc_req *req) 2036 { 2037 int authres; 2038 2039 /* 2040 * First, check if the security flavor used in the request 2041 * are among the flavors set in the server namespace. 2042 */ 2043 if (!secinfo_match_or_authnone(cs)) { 2044 *cs->statusp = NFS4ERR_WRONGSEC; 2045 return (*cs->statusp); 2046 } 2047 2048 authres = checkauth4(cs, req); 2049 2050 if (authres > 0) { 2051 *cs->statusp = NFS4_OK; 2052 if (! (cs->access & CS_ACCESS_LIMITED)) 2053 cs->access = CS_ACCESS_OK; 2054 } else if (authres == 0) { 2055 *cs->statusp = NFS4ERR_ACCESS; 2056 } else if (authres == -2) { 2057 *cs->statusp = NFS4ERR_WRONGSEC; 2058 } else { 2059 *cs->statusp = NFS4ERR_DELAY; 2060 } 2061 return (*cs->statusp); 2062 } 2063 2064 /* 2065 * bitmap4_to_attrmask is called by getattr and readdir. 2066 * It sets up the vattr mask and determines whether vfsstat call is needed 2067 * based on the input bitmap. 2068 * Returns nfsv4 status. 2069 */ 2070 static nfsstat4 2071 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) 2072 { 2073 int i; 2074 uint_t va_mask; 2075 struct statvfs64 *sbp = sargp->sbp; 2076 2077 sargp->sbp = NULL; 2078 sargp->flag = 0; 2079 sargp->rdattr_error = NFS4_OK; 2080 sargp->mntdfid_set = FALSE; 2081 if (sargp->cs->vp) 2082 sargp->xattr = get_fh4_flag(&sargp->cs->fh, 2083 FH4_ATTRDIR | FH4_NAMEDATTR); 2084 else 2085 sargp->xattr = 0; 2086 2087 /* 2088 * Set rdattr_error_req to true if return error per 2089 * failed entry rather than fail the readdir. 2090 */ 2091 if (breq & FATTR4_RDATTR_ERROR_MASK) 2092 sargp->rdattr_error_req = 1; 2093 else 2094 sargp->rdattr_error_req = 0; 2095 2096 /* 2097 * generate the va_mask 2098 * Handle the easy cases first 2099 */ 2100 switch (breq) { 2101 case NFS4_NTOV_ATTR_MASK: 2102 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; 2103 return (NFS4_OK); 2104 2105 case NFS4_FS_ATTR_MASK: 2106 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; 2107 sargp->sbp = sbp; 2108 return (NFS4_OK); 2109 2110 case NFS4_NTOV_ATTR_CACHE_MASK: 2111 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; 2112 return (NFS4_OK); 2113 2114 case FATTR4_LEASE_TIME_MASK: 2115 sargp->vap->va_mask = 0; 2116 return (NFS4_OK); 2117 2118 default: 2119 va_mask = 0; 2120 for (i = 0; i < nfs4_ntov_map_size; i++) { 2121 if ((breq & nfs4_ntov_map[i].fbit) && 2122 nfs4_ntov_map[i].vbit) 2123 va_mask |= nfs4_ntov_map[i].vbit; 2124 } 2125 2126 /* 2127 * Check is vfsstat is needed 2128 */ 2129 if (breq & NFS4_FS_ATTR_MASK) 2130 sargp->sbp = sbp; 2131 2132 sargp->vap->va_mask = va_mask; 2133 return (NFS4_OK); 2134 } 2135 /* NOTREACHED */ 2136 } 2137 2138 /* 2139 * bitmap4_get_sysattrs is called by getattr and readdir. 2140 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. 2141 * Returns nfsv4 status. 2142 */ 2143 static nfsstat4 2144 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) 2145 { 2146 int error; 2147 struct compound_state *cs = sargp->cs; 2148 vnode_t *vp = cs->vp; 2149 2150 if (sargp->sbp != NULL) { 2151 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { 2152 sargp->sbp = NULL; /* to identify error */ 2153 return (puterrno4(error)); 2154 } 2155 } 2156 2157 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); 2158 } 2159 2160 static void 2161 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) 2162 { 2163 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, 2164 KM_SLEEP); 2165 ntovp->attrcnt = 0; 2166 ntovp->vfsstat = FALSE; 2167 } 2168 2169 static void 2170 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, 2171 struct nfs4_svgetit_arg *sargp) 2172 { 2173 int i; 2174 union nfs4_attr_u *na; 2175 uint8_t *amap; 2176 2177 /* 2178 * XXX Should do the same checks for whether the bit is set 2179 */ 2180 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2181 i < ntovp->attrcnt; i++, na++, amap++) { 2182 (void) (*nfs4_ntov_map[*amap].sv_getit)( 2183 NFS4ATTR_FREEIT, sargp, na); 2184 } 2185 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { 2186 /* 2187 * xdr_free for getattr will be done later 2188 */ 2189 for (i = 0, na = ntovp->na, amap = ntovp->amap; 2190 i < ntovp->attrcnt; i++, na++, amap++) { 2191 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); 2192 } 2193 } 2194 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); 2195 } 2196 2197 /* 2198 * do_rfs4_op_getattr gets the system attrs and converts into fattr4. 2199 */ 2200 static nfsstat4 2201 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, 2202 struct nfs4_svgetit_arg *sargp) 2203 { 2204 int error = 0; 2205 int i, k; 2206 struct nfs4_ntov_table ntov; 2207 XDR xdr; 2208 ulong_t xdr_size; 2209 char *xdr_attrs; 2210 nfsstat4 status = NFS4_OK; 2211 nfsstat4 prev_rdattr_error = sargp->rdattr_error; 2212 union nfs4_attr_u *na; 2213 uint8_t *amap; 2214 2215 sargp->op = NFS4ATTR_GETIT; 2216 sargp->flag = 0; 2217 2218 fattrp->attrmask = 0; 2219 /* if no bits requested, then return empty fattr4 */ 2220 if (breq == 0) { 2221 fattrp->attrlist4_len = 0; 2222 fattrp->attrlist4 = NULL; 2223 return (NFS4_OK); 2224 } 2225 2226 /* 2227 * return NFS4ERR_INVAL when client requests write-only attrs 2228 */ 2229 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) 2230 return (NFS4ERR_INVAL); 2231 2232 nfs4_ntov_table_init(&ntov); 2233 na = ntov.na; 2234 amap = ntov.amap; 2235 2236 /* 2237 * Now loop to get or verify the attrs 2238 */ 2239 for (i = 0; i < nfs4_ntov_map_size; i++) { 2240 if (breq & nfs4_ntov_map[i].fbit) { 2241 if ((*nfs4_ntov_map[i].sv_getit)( 2242 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { 2243 2244 error = (*nfs4_ntov_map[i].sv_getit)( 2245 NFS4ATTR_GETIT, sargp, na); 2246 2247 /* 2248 * Possible error values: 2249 * >0 if sv_getit failed to 2250 * get the attr; 0 if succeeded; 2251 * <0 if rdattr_error and the 2252 * attribute cannot be returned. 2253 */ 2254 if (error && !(sargp->rdattr_error_req)) 2255 goto done; 2256 /* 2257 * If error then just for entry 2258 */ 2259 if (error == 0) { 2260 fattrp->attrmask |= 2261 nfs4_ntov_map[i].fbit; 2262 *amap++ = 2263 (uint8_t)nfs4_ntov_map[i].nval; 2264 na++; 2265 (ntov.attrcnt)++; 2266 } else if ((error > 0) && 2267 (sargp->rdattr_error == NFS4_OK)) { 2268 sargp->rdattr_error = puterrno4(error); 2269 } 2270 error = 0; 2271 } 2272 } 2273 } 2274 2275 /* 2276 * If rdattr_error was set after the return value for it was assigned, 2277 * update it. 2278 */ 2279 if (prev_rdattr_error != sargp->rdattr_error) { 2280 na = ntov.na; 2281 amap = ntov.amap; 2282 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2283 k = *amap; 2284 if (k < FATTR4_RDATTR_ERROR) { 2285 continue; 2286 } 2287 if ((k == FATTR4_RDATTR_ERROR) && 2288 ((*nfs4_ntov_map[k].sv_getit)( 2289 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { 2290 2291 (void) (*nfs4_ntov_map[k].sv_getit)( 2292 NFS4ATTR_GETIT, sargp, na); 2293 } 2294 break; 2295 } 2296 } 2297 2298 xdr_size = 0; 2299 na = ntov.na; 2300 amap = ntov.amap; 2301 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2302 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); 2303 } 2304 2305 fattrp->attrlist4_len = xdr_size; 2306 if (xdr_size) { 2307 /* freed by rfs4_op_getattr_free() */ 2308 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); 2309 2310 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); 2311 2312 na = ntov.na; 2313 amap = ntov.amap; 2314 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { 2315 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { 2316 DTRACE_PROBE1(nfss__e__getattr4_encfail, 2317 int, *amap); 2318 status = NFS4ERR_SERVERFAULT; 2319 break; 2320 } 2321 } 2322 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 2323 } else { 2324 fattrp->attrlist4 = NULL; 2325 } 2326 done: 2327 2328 nfs4_ntov_table_free(&ntov, sargp); 2329 2330 if (error != 0) 2331 status = puterrno4(error); 2332 2333 return (status); 2334 } 2335 2336 /* ARGSUSED */ 2337 static void 2338 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2339 struct compound_state *cs) 2340 { 2341 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; 2342 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2343 struct nfs4_svgetit_arg sarg; 2344 struct statvfs64 sb; 2345 nfsstat4 status; 2346 2347 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, 2348 GETATTR4args *, args); 2349 2350 if (cs->vp == NULL) { 2351 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2352 goto out; 2353 } 2354 2355 if (cs->access == CS_ACCESS_DENIED) { 2356 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2357 goto out; 2358 } 2359 2360 sarg.sbp = &sb; 2361 sarg.cs = cs; 2362 sarg.is_referral = B_FALSE; 2363 2364 status = bitmap4_to_attrmask(args->attr_request, &sarg); 2365 if (status == NFS4_OK) { 2366 2367 status = bitmap4_get_sysattrs(&sarg); 2368 if (status == NFS4_OK) { 2369 2370 /* Is this a referral? */ 2371 if (vn_is_nfs_reparse(cs->vp, cs->cr)) { 2372 /* Older V4 Solaris client sees a link */ 2373 if (client_is_downrev(req)) 2374 sarg.vap->va_type = VLNK; 2375 else 2376 sarg.is_referral = B_TRUE; 2377 } 2378 2379 status = do_rfs4_op_getattr(args->attr_request, 2380 &resp->obj_attributes, &sarg); 2381 } 2382 } 2383 *cs->statusp = resp->status = status; 2384 out: 2385 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, 2386 GETATTR4res *, resp); 2387 } 2388 2389 static void 2390 rfs4_op_getattr_free(nfs_resop4 *resop) 2391 { 2392 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; 2393 2394 nfs4_fattr4_free(&resp->obj_attributes); 2395 } 2396 2397 /* ARGSUSED */ 2398 static void 2399 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2400 struct compound_state *cs) 2401 { 2402 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2403 2404 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); 2405 2406 if (cs->vp == NULL) { 2407 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2408 goto out; 2409 } 2410 if (cs->access == CS_ACCESS_DENIED) { 2411 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2412 goto out; 2413 } 2414 2415 /* check for reparse point at the share point */ 2416 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { 2417 /* it's all bad */ 2418 cs->exi->exi_moved = 1; 2419 *cs->statusp = resp->status = NFS4ERR_MOVED; 2420 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, 2421 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2422 return; 2423 } 2424 2425 /* check for reparse point at vp */ 2426 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { 2427 /* it's not all bad */ 2428 *cs->statusp = resp->status = NFS4ERR_MOVED; 2429 DTRACE_PROBE2(nfs4serv__func__referral__moved, 2430 vnode_t *, cs->vp, char *, "rfs4_op_getfh"); 2431 return; 2432 } 2433 2434 resp->object.nfs_fh4_val = 2435 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); 2436 nfs_fh4_copy(&cs->fh, &resp->object); 2437 *cs->statusp = resp->status = NFS4_OK; 2438 out: 2439 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, 2440 GETFH4res *, resp); 2441 } 2442 2443 static void 2444 rfs4_op_getfh_free(nfs_resop4 *resop) 2445 { 2446 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; 2447 2448 if (resp->status == NFS4_OK && 2449 resp->object.nfs_fh4_val != NULL) { 2450 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); 2451 resp->object.nfs_fh4_val = NULL; 2452 resp->object.nfs_fh4_len = 0; 2453 } 2454 } 2455 2456 /* 2457 * illegal: args: void 2458 * res : status (NFS4ERR_OP_ILLEGAL) 2459 */ 2460 /* ARGSUSED */ 2461 static void 2462 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, 2463 struct svc_req *req, struct compound_state *cs) 2464 { 2465 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; 2466 2467 resop->resop = OP_ILLEGAL; 2468 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; 2469 } 2470 2471 /* 2472 * link: args: SAVED_FH: file, CURRENT_FH: target directory 2473 * res: status. If success - CURRENT_FH unchanged, return change_info 2474 */ 2475 /* ARGSUSED */ 2476 static void 2477 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2478 struct compound_state *cs) 2479 { 2480 LINK4args *args = &argop->nfs_argop4_u.oplink; 2481 LINK4res *resp = &resop->nfs_resop4_u.oplink; 2482 int error; 2483 vnode_t *vp; 2484 vnode_t *dvp; 2485 struct vattr bdva, idva, adva; 2486 char *nm; 2487 uint_t len; 2488 struct sockaddr *ca; 2489 char *name = NULL; 2490 nfsstat4 status; 2491 2492 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, 2493 LINK4args *, args); 2494 2495 /* SAVED_FH: source object */ 2496 vp = cs->saved_vp; 2497 if (vp == NULL) { 2498 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2499 goto out; 2500 } 2501 2502 /* CURRENT_FH: target directory */ 2503 dvp = cs->vp; 2504 if (dvp == NULL) { 2505 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2506 goto out; 2507 } 2508 2509 /* 2510 * If there is a non-shared filesystem mounted on this vnode, 2511 * do not allow to link any file in this directory. 2512 */ 2513 if (vn_ismntpt(dvp)) { 2514 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2515 goto out; 2516 } 2517 2518 if (cs->access == CS_ACCESS_DENIED) { 2519 *cs->statusp = resp->status = NFS4ERR_ACCESS; 2520 goto out; 2521 } 2522 2523 /* Check source object's type validity */ 2524 if (vp->v_type == VDIR) { 2525 *cs->statusp = resp->status = NFS4ERR_ISDIR; 2526 goto out; 2527 } 2528 2529 /* Check target directory's type */ 2530 if (dvp->v_type != VDIR) { 2531 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2532 goto out; 2533 } 2534 2535 if (cs->saved_exi != cs->exi) { 2536 *cs->statusp = resp->status = NFS4ERR_XDEV; 2537 goto out; 2538 } 2539 2540 status = utf8_dir_verify(&args->newname); 2541 if (status != NFS4_OK) { 2542 *cs->statusp = resp->status = status; 2543 goto out; 2544 } 2545 2546 nm = utf8_to_fn(&args->newname, &len, NULL); 2547 if (nm == NULL) { 2548 *cs->statusp = resp->status = NFS4ERR_INVAL; 2549 goto out; 2550 } 2551 2552 if (len > MAXNAMELEN) { 2553 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2554 kmem_free(nm, len); 2555 goto out; 2556 } 2557 2558 if (rdonly4(req, cs)) { 2559 *cs->statusp = resp->status = NFS4ERR_ROFS; 2560 kmem_free(nm, len); 2561 goto out; 2562 } 2563 2564 /* Get "before" change value */ 2565 bdva.va_mask = AT_CTIME|AT_SEQ; 2566 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 2567 if (error) { 2568 *cs->statusp = resp->status = puterrno4(error); 2569 kmem_free(nm, len); 2570 goto out; 2571 } 2572 2573 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2574 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2575 MAXPATHLEN + 1); 2576 2577 if (name == NULL) { 2578 *cs->statusp = resp->status = NFS4ERR_INVAL; 2579 kmem_free(nm, len); 2580 goto out; 2581 } 2582 2583 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 2584 2585 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); 2586 2587 if (nm != name) 2588 kmem_free(name, MAXPATHLEN + 1); 2589 kmem_free(nm, len); 2590 2591 /* 2592 * Get the initial "after" sequence number, if it fails, set to zero 2593 */ 2594 idva.va_mask = AT_SEQ; 2595 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 2596 idva.va_seq = 0; 2597 2598 /* 2599 * Force modified data and metadata out to stable storage. 2600 */ 2601 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 2602 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 2603 2604 if (error) { 2605 *cs->statusp = resp->status = puterrno4(error); 2606 goto out; 2607 } 2608 2609 /* 2610 * Get "after" change value, if it fails, simply return the 2611 * before value. 2612 */ 2613 adva.va_mask = AT_CTIME|AT_SEQ; 2614 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 2615 adva.va_ctime = bdva.va_ctime; 2616 adva.va_seq = 0; 2617 } 2618 2619 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 2620 2621 /* 2622 * The cinfo.atomic = TRUE only if we have 2623 * non-zero va_seq's, and it has incremented by exactly one 2624 * during the VOP_LINK and it didn't change during the VOP_FSYNC. 2625 */ 2626 if (bdva.va_seq && idva.va_seq && adva.va_seq && 2627 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 2628 resp->cinfo.atomic = TRUE; 2629 else 2630 resp->cinfo.atomic = FALSE; 2631 2632 *cs->statusp = resp->status = NFS4_OK; 2633 out: 2634 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, 2635 LINK4res *, resp); 2636 } 2637 2638 /* 2639 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. 2640 */ 2641 2642 /* ARGSUSED */ 2643 static nfsstat4 2644 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) 2645 { 2646 int error; 2647 int different_export = 0; 2648 vnode_t *vp, *pre_tvp = NULL, *oldvp = NULL; 2649 struct exportinfo *exi = NULL, *pre_exi = NULL; 2650 nfsstat4 stat; 2651 fid_t fid; 2652 int attrdir, dotdot, walk; 2653 bool_t is_newvp = FALSE; 2654 2655 if (cs->vp->v_flag & V_XATTRDIR) { 2656 attrdir = 1; 2657 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2658 } else { 2659 attrdir = 0; 2660 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); 2661 } 2662 2663 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); 2664 2665 /* 2666 * If dotdotting, then need to check whether it's 2667 * above the root of a filesystem, or above an 2668 * export point. 2669 */ 2670 if (dotdot) { 2671 2672 /* 2673 * If dotdotting at the root of a filesystem, then 2674 * need to traverse back to the mounted-on filesystem 2675 * and do the dotdot lookup there. 2676 */ 2677 if (cs->vp->v_flag & VROOT) { 2678 2679 /* 2680 * If at the system root, then can 2681 * go up no further. 2682 */ 2683 if (VN_CMP(cs->vp, rootdir)) 2684 return (puterrno4(ENOENT)); 2685 2686 /* 2687 * Traverse back to the mounted-on filesystem 2688 */ 2689 cs->vp = untraverse(cs->vp); 2690 2691 /* 2692 * Set the different_export flag so we remember 2693 * to pick up a new exportinfo entry for 2694 * this new filesystem. 2695 */ 2696 different_export = 1; 2697 } else { 2698 2699 /* 2700 * If dotdotting above an export point then set 2701 * the different_export to get new export info. 2702 */ 2703 different_export = nfs_exported(cs->exi, cs->vp); 2704 } 2705 } 2706 2707 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, 2708 NULL, NULL, NULL); 2709 if (error) 2710 return (puterrno4(error)); 2711 2712 /* 2713 * If the vnode is in a pseudo filesystem, check whether it is visible. 2714 * 2715 * XXX if the vnode is a symlink and it is not visible in 2716 * a pseudo filesystem, return ENOENT (not following symlink). 2717 * V4 client can not mount such symlink. This is a regression 2718 * from V2/V3. 2719 * 2720 * In the same exported filesystem, if the security flavor used 2721 * is not an explicitly shared flavor, limit the view to the visible 2722 * list entries only. This is not a WRONGSEC case because it's already 2723 * checked via PUTROOTFH/PUTPUBFH or PUTFH. 2724 */ 2725 if (!different_export && 2726 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || 2727 cs->access & CS_ACCESS_LIMITED)) { 2728 if (! nfs_visible(cs->exi, vp, &different_export)) { 2729 VN_RELE(vp); 2730 return (puterrno4(ENOENT)); 2731 } 2732 } 2733 2734 /* 2735 * If it's a mountpoint, then traverse it. 2736 */ 2737 if (vn_ismntpt(vp)) { 2738 pre_exi = cs->exi; /* save pre-traversed exportinfo */ 2739 pre_tvp = vp; /* save pre-traversed vnode */ 2740 2741 /* 2742 * hold pre_tvp to counteract rele by traverse. We will 2743 * need pre_tvp below if checkexport4 fails 2744 */ 2745 VN_HOLD(pre_tvp); 2746 if ((error = traverse(&vp)) != 0) { 2747 VN_RELE(vp); 2748 VN_RELE(pre_tvp); 2749 return (puterrno4(error)); 2750 } 2751 different_export = 1; 2752 } else if (vp->v_vfsp != cs->vp->v_vfsp) { 2753 /* 2754 * The vfsp comparison is to handle the case where 2755 * a LOFS mount is shared. lo_lookup traverses mount points, 2756 * and NFS is unaware of local fs transistions because 2757 * v_vfsmountedhere isn't set. For this special LOFS case, 2758 * the dir and the obj returned by lookup will have different 2759 * vfs ptrs. 2760 */ 2761 different_export = 1; 2762 } 2763 2764 if (different_export) { 2765 2766 bzero(&fid, sizeof (fid)); 2767 fid.fid_len = MAXFIDSZ; 2768 error = vop_fid_pseudo(vp, &fid); 2769 if (error) { 2770 VN_RELE(vp); 2771 if (pre_tvp) 2772 VN_RELE(pre_tvp); 2773 return (puterrno4(error)); 2774 } 2775 2776 if (dotdot) 2777 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); 2778 else 2779 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); 2780 2781 if (exi == NULL) { 2782 if (pre_tvp) { 2783 /* 2784 * If this vnode is a mounted-on vnode, 2785 * but the mounted-on file system is not 2786 * exported, send back the filehandle for 2787 * the mounted-on vnode, not the root of 2788 * the mounted-on file system. 2789 */ 2790 VN_RELE(vp); 2791 vp = pre_tvp; 2792 exi = pre_exi; 2793 } else { 2794 VN_RELE(vp); 2795 return (puterrno4(EACCES)); 2796 } 2797 } else if (pre_tvp) { 2798 /* we're done with pre_tvp now. release extra hold */ 2799 VN_RELE(pre_tvp); 2800 } 2801 2802 cs->exi = exi; 2803 2804 /* 2805 * Now we do a checkauth4. The reason is that 2806 * this client/user may not have access to the new 2807 * exported file system, and if he does, 2808 * the client/user may be mapped to a different uid. 2809 * 2810 * We start with a new cr, because the checkauth4 done 2811 * in the PUT*FH operation over wrote the cred's uid, 2812 * gid, etc, and we want the real thing before calling 2813 * checkauth4() 2814 */ 2815 crfree(cs->cr); 2816 cs->cr = crdup(cs->basecr); 2817 2818 oldvp = cs->vp; 2819 cs->vp = vp; 2820 is_newvp = TRUE; 2821 2822 stat = call_checkauth4(cs, req); 2823 if (stat != NFS4_OK) { 2824 VN_RELE(cs->vp); 2825 cs->vp = oldvp; 2826 return (stat); 2827 } 2828 } 2829 2830 /* 2831 * After various NFS checks, do a label check on the path 2832 * component. The label on this path should either be the 2833 * global zone's label or a zone's label. We are only 2834 * interested in the zone's label because exported files 2835 * in global zone is accessible (though read-only) to 2836 * clients. The exportability/visibility check is already 2837 * done before reaching this code. 2838 */ 2839 if (is_system_labeled()) { 2840 bslabel_t *clabel; 2841 2842 ASSERT(req->rq_label != NULL); 2843 clabel = req->rq_label; 2844 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, 2845 "got client label from request(1)", struct svc_req *, req); 2846 2847 if (!blequal(&l_admin_low->tsl_label, clabel)) { 2848 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 2849 cs->exi)) { 2850 error = EACCES; 2851 goto err_out; 2852 } 2853 } else { 2854 /* 2855 * We grant access to admin_low label clients 2856 * only if the client is trusted, i.e. also 2857 * running Solaris Trusted Extension. 2858 */ 2859 struct sockaddr *ca; 2860 int addr_type; 2861 void *ipaddr; 2862 tsol_tpc_t *tp; 2863 2864 ca = (struct sockaddr *)svc_getrpccaller( 2865 req->rq_xprt)->buf; 2866 if (ca->sa_family == AF_INET) { 2867 addr_type = IPV4_VERSION; 2868 ipaddr = &((struct sockaddr_in *)ca)->sin_addr; 2869 } else if (ca->sa_family == AF_INET6) { 2870 addr_type = IPV6_VERSION; 2871 ipaddr = &((struct sockaddr_in6 *) 2872 ca)->sin6_addr; 2873 } 2874 tp = find_tpc(ipaddr, addr_type, B_FALSE); 2875 if (tp == NULL || tp->tpc_tp.tp_doi != 2876 l_admin_low->tsl_doi || tp->tpc_tp.host_type != 2877 SUN_CIPSO) { 2878 if (tp != NULL) 2879 TPC_RELE(tp); 2880 error = EACCES; 2881 goto err_out; 2882 } 2883 TPC_RELE(tp); 2884 } 2885 } 2886 2887 error = makefh4(&cs->fh, vp, cs->exi); 2888 2889 err_out: 2890 if (error) { 2891 if (is_newvp) { 2892 VN_RELE(cs->vp); 2893 cs->vp = oldvp; 2894 } else 2895 VN_RELE(vp); 2896 return (puterrno4(error)); 2897 } 2898 2899 if (!is_newvp) { 2900 if (cs->vp) 2901 VN_RELE(cs->vp); 2902 cs->vp = vp; 2903 } else if (oldvp) 2904 VN_RELE(oldvp); 2905 2906 /* 2907 * if did lookup on attrdir and didn't lookup .., set named 2908 * attr fh flag 2909 */ 2910 if (attrdir && ! dotdot) 2911 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 2912 2913 /* Assume false for now, open proc will set this */ 2914 cs->mandlock = FALSE; 2915 2916 return (NFS4_OK); 2917 } 2918 2919 /* ARGSUSED */ 2920 static void 2921 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 2922 struct compound_state *cs) 2923 { 2924 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; 2925 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; 2926 char *nm; 2927 uint_t len; 2928 struct sockaddr *ca; 2929 char *name = NULL; 2930 nfsstat4 status; 2931 2932 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, 2933 LOOKUP4args *, args); 2934 2935 if (cs->vp == NULL) { 2936 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 2937 goto out; 2938 } 2939 2940 if (cs->vp->v_type == VLNK) { 2941 *cs->statusp = resp->status = NFS4ERR_SYMLINK; 2942 goto out; 2943 } 2944 2945 if (cs->vp->v_type != VDIR) { 2946 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 2947 goto out; 2948 } 2949 2950 status = utf8_dir_verify(&args->objname); 2951 if (status != NFS4_OK) { 2952 *cs->statusp = resp->status = status; 2953 goto out; 2954 } 2955 2956 nm = utf8_to_str(&args->objname, &len, NULL); 2957 if (nm == NULL) { 2958 *cs->statusp = resp->status = NFS4ERR_INVAL; 2959 goto out; 2960 } 2961 2962 if (len > MAXNAMELEN) { 2963 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 2964 kmem_free(nm, len); 2965 goto out; 2966 } 2967 2968 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 2969 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 2970 MAXPATHLEN + 1); 2971 2972 if (name == NULL) { 2973 *cs->statusp = resp->status = NFS4ERR_INVAL; 2974 kmem_free(nm, len); 2975 goto out; 2976 } 2977 2978 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); 2979 2980 if (name != nm) 2981 kmem_free(name, MAXPATHLEN + 1); 2982 kmem_free(nm, len); 2983 2984 out: 2985 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, 2986 LOOKUP4res *, resp); 2987 } 2988 2989 /* ARGSUSED */ 2990 static void 2991 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 2992 struct compound_state *cs) 2993 { 2994 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; 2995 2996 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); 2997 2998 if (cs->vp == NULL) { 2999 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3000 goto out; 3001 } 3002 3003 if (cs->vp->v_type != VDIR) { 3004 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 3005 goto out; 3006 } 3007 3008 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); 3009 3010 /* 3011 * From NFSV4 Specification, LOOKUPP should not check for 3012 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. 3013 */ 3014 if (resp->status == NFS4ERR_WRONGSEC) { 3015 *cs->statusp = resp->status = NFS4_OK; 3016 } 3017 3018 out: 3019 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, 3020 LOOKUPP4res *, resp); 3021 } 3022 3023 3024 /*ARGSUSED2*/ 3025 static void 3026 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3027 struct compound_state *cs) 3028 { 3029 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; 3030 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; 3031 vnode_t *avp = NULL; 3032 int lookup_flags = LOOKUP_XATTR, error; 3033 int exp_ro = 0; 3034 3035 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, 3036 OPENATTR4args *, args); 3037 3038 if (cs->vp == NULL) { 3039 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3040 goto out; 3041 } 3042 3043 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && 3044 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { 3045 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3046 goto out; 3047 } 3048 3049 /* 3050 * If file system supports passing ACE mask to VOP_ACCESS then 3051 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks 3052 */ 3053 3054 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) 3055 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, 3056 V_ACE_MASK, cs->cr, NULL); 3057 else 3058 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && 3059 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && 3060 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); 3061 3062 if (error) { 3063 *cs->statusp = resp->status = puterrno4(EACCES); 3064 goto out; 3065 } 3066 3067 /* 3068 * The CREATE_XATTR_DIR VOP flag cannot be specified if 3069 * the file system is exported read-only -- regardless of 3070 * createdir flag. Otherwise the attrdir would be created 3071 * (assuming server fs isn't mounted readonly locally). If 3072 * VOP_LOOKUP returns ENOENT in this case, the error will 3073 * be translated into EROFS. ENOSYS is mapped to ENOTSUP 3074 * because specfs has no VOP_LOOKUP op, so the macro would 3075 * return ENOSYS. EINVAL is returned by all (current) 3076 * Solaris file system implementations when any of their 3077 * restrictions are violated (xattr(dir) can't have xattrdir). 3078 * Returning NOTSUPP is more appropriate in this case 3079 * because the object will never be able to have an attrdir. 3080 */ 3081 if (args->createdir && ! (exp_ro = rdonly4(req, cs))) 3082 lookup_flags |= CREATE_XATTR_DIR; 3083 3084 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, 3085 NULL, NULL, NULL); 3086 3087 if (error) { 3088 if (error == ENOENT && args->createdir && exp_ro) 3089 *cs->statusp = resp->status = puterrno4(EROFS); 3090 else if (error == EINVAL || error == ENOSYS) 3091 *cs->statusp = resp->status = puterrno4(ENOTSUP); 3092 else 3093 *cs->statusp = resp->status = puterrno4(error); 3094 goto out; 3095 } 3096 3097 ASSERT(avp->v_flag & V_XATTRDIR); 3098 3099 error = makefh4(&cs->fh, avp, cs->exi); 3100 3101 if (error) { 3102 VN_RELE(avp); 3103 *cs->statusp = resp->status = puterrno4(error); 3104 goto out; 3105 } 3106 3107 VN_RELE(cs->vp); 3108 cs->vp = avp; 3109 3110 /* 3111 * There is no requirement for an attrdir fh flag 3112 * because the attrdir has a vnode flag to distinguish 3113 * it from regular (non-xattr) directories. The 3114 * FH4_ATTRDIR flag is set for future sanity checks. 3115 */ 3116 set_fh4_flag(&cs->fh, FH4_ATTRDIR); 3117 *cs->statusp = resp->status = NFS4_OK; 3118 3119 out: 3120 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, 3121 OPENATTR4res *, resp); 3122 } 3123 3124 static int 3125 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, 3126 caller_context_t *ct) 3127 { 3128 int error; 3129 int i; 3130 clock_t delaytime; 3131 3132 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 3133 3134 /* 3135 * Don't block on mandatory locks. If this routine returns 3136 * EAGAIN, the caller should return NFS4ERR_LOCKED. 3137 */ 3138 uio->uio_fmode = FNONBLOCK; 3139 3140 for (i = 0; i < rfs4_maxlock_tries; i++) { 3141 3142 3143 if (direction == FREAD) { 3144 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); 3145 error = VOP_READ(vp, uio, ioflag, cred, ct); 3146 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); 3147 } else { 3148 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); 3149 error = VOP_WRITE(vp, uio, ioflag, cred, ct); 3150 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); 3151 } 3152 3153 if (error != EAGAIN) 3154 break; 3155 3156 if (i < rfs4_maxlock_tries - 1) { 3157 delay(delaytime); 3158 delaytime *= 2; 3159 } 3160 } 3161 3162 return (error); 3163 } 3164 3165 /* ARGSUSED */ 3166 static void 3167 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3168 struct compound_state *cs) 3169 { 3170 READ4args *args = &argop->nfs_argop4_u.opread; 3171 READ4res *resp = &resop->nfs_resop4_u.opread; 3172 int error; 3173 int verror; 3174 vnode_t *vp; 3175 struct vattr va; 3176 struct iovec iov, *iovp = NULL; 3177 int iovcnt; 3178 struct uio uio; 3179 u_offset_t offset; 3180 bool_t *deleg = &cs->deleg; 3181 nfsstat4 stat; 3182 int in_crit = 0; 3183 mblk_t *mp = NULL; 3184 int alloc_err = 0; 3185 int rdma_used = 0; 3186 int loaned_buffers; 3187 caller_context_t ct; 3188 struct uio *uiop; 3189 3190 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, 3191 READ4args, args); 3192 3193 vp = cs->vp; 3194 if (vp == NULL) { 3195 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3196 goto out; 3197 } 3198 if (cs->access == CS_ACCESS_DENIED) { 3199 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3200 goto out; 3201 } 3202 3203 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, 3204 deleg, TRUE, &ct)) != NFS4_OK) { 3205 *cs->statusp = resp->status = stat; 3206 goto out; 3207 } 3208 3209 /* 3210 * Enter the critical region before calling VOP_RWLOCK 3211 * to avoid a deadlock with write requests. 3212 */ 3213 if (nbl_need_check(vp)) { 3214 nbl_start_crit(vp, RW_READER); 3215 in_crit = 1; 3216 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, 3217 &ct)) { 3218 *cs->statusp = resp->status = NFS4ERR_LOCKED; 3219 goto out; 3220 } 3221 } 3222 3223 if (args->wlist) { 3224 if (args->count > clist_len(args->wlist)) { 3225 *cs->statusp = resp->status = NFS4ERR_INVAL; 3226 goto out; 3227 } 3228 rdma_used = 1; 3229 } 3230 3231 /* use loaned buffers for TCP */ 3232 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; 3233 3234 va.va_mask = AT_MODE|AT_SIZE|AT_UID; 3235 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3236 3237 /* 3238 * If we can't get the attributes, then we can't do the 3239 * right access checking. So, we'll fail the request. 3240 */ 3241 if (verror) { 3242 *cs->statusp = resp->status = puterrno4(verror); 3243 goto out; 3244 } 3245 3246 if (vp->v_type != VREG) { 3247 *cs->statusp = resp->status = 3248 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 3249 goto out; 3250 } 3251 3252 if (crgetuid(cs->cr) != va.va_uid && 3253 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && 3254 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { 3255 *cs->statusp = resp->status = puterrno4(error); 3256 goto out; 3257 } 3258 3259 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ 3260 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3261 goto out; 3262 } 3263 3264 offset = args->offset; 3265 if (offset >= va.va_size) { 3266 *cs->statusp = resp->status = NFS4_OK; 3267 resp->eof = TRUE; 3268 resp->data_len = 0; 3269 resp->data_val = NULL; 3270 resp->mblk = NULL; 3271 /* RDMA */ 3272 resp->wlist = args->wlist; 3273 resp->wlist_len = resp->data_len; 3274 *cs->statusp = resp->status = NFS4_OK; 3275 if (resp->wlist) 3276 clist_zero_len(resp->wlist); 3277 goto out; 3278 } 3279 3280 if (args->count == 0) { 3281 *cs->statusp = resp->status = NFS4_OK; 3282 resp->eof = FALSE; 3283 resp->data_len = 0; 3284 resp->data_val = NULL; 3285 resp->mblk = NULL; 3286 /* RDMA */ 3287 resp->wlist = args->wlist; 3288 resp->wlist_len = resp->data_len; 3289 if (resp->wlist) 3290 clist_zero_len(resp->wlist); 3291 goto out; 3292 } 3293 3294 /* 3295 * Do not allocate memory more than maximum allowed 3296 * transfer size 3297 */ 3298 if (args->count > rfs4_tsize(req)) 3299 args->count = rfs4_tsize(req); 3300 3301 if (loaned_buffers) { 3302 uiop = (uio_t *)rfs_setup_xuio(vp); 3303 ASSERT(uiop != NULL); 3304 uiop->uio_segflg = UIO_SYSSPACE; 3305 uiop->uio_loffset = args->offset; 3306 uiop->uio_resid = args->count; 3307 3308 /* Jump to do the read if successful */ 3309 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { 3310 /* 3311 * Need to hold the vnode until after VOP_RETZCBUF() 3312 * is called. 3313 */ 3314 VN_HOLD(vp); 3315 goto doio_read; 3316 } 3317 3318 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, 3319 uiop->uio_loffset, int, uiop->uio_resid); 3320 3321 uiop->uio_extflg = 0; 3322 3323 /* failure to setup for zero copy */ 3324 rfs_free_xuio((void *)uiop); 3325 loaned_buffers = 0; 3326 } 3327 3328 /* 3329 * If returning data via RDMA Write, then grab the chunk list. If we 3330 * aren't returning READ data w/RDMA_WRITE, then grab a mblk. 3331 */ 3332 if (rdma_used) { 3333 mp = NULL; 3334 (void) rdma_get_wchunk(req, &iov, args->wlist); 3335 uio.uio_iov = &iov; 3336 uio.uio_iovcnt = 1; 3337 } else { 3338 /* 3339 * mp will contain the data to be sent out in the read reply. 3340 * It will be freed after the reply has been sent. 3341 */ 3342 mp = rfs_read_alloc(args->count, &iovp, &iovcnt); 3343 ASSERT(mp != NULL); 3344 ASSERT(alloc_err == 0); 3345 uio.uio_iov = iovp; 3346 uio.uio_iovcnt = iovcnt; 3347 } 3348 3349 uio.uio_segflg = UIO_SYSSPACE; 3350 uio.uio_extflg = UIO_COPY_CACHED; 3351 uio.uio_loffset = args->offset; 3352 uio.uio_resid = args->count; 3353 uiop = &uio; 3354 3355 doio_read: 3356 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); 3357 3358 va.va_mask = AT_SIZE; 3359 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); 3360 3361 if (error) { 3362 if (mp) 3363 freemsg(mp); 3364 *cs->statusp = resp->status = puterrno4(error); 3365 goto out; 3366 } 3367 3368 /* make mblk using zc buffers */ 3369 if (loaned_buffers) { 3370 mp = uio_to_mblk(uiop); 3371 ASSERT(mp != NULL); 3372 } 3373 3374 *cs->statusp = resp->status = NFS4_OK; 3375 3376 ASSERT(uiop->uio_resid >= 0); 3377 resp->data_len = args->count - uiop->uio_resid; 3378 if (mp) { 3379 resp->data_val = (char *)mp->b_datap->db_base; 3380 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); 3381 } else { 3382 resp->data_val = (caddr_t)iov.iov_base; 3383 } 3384 3385 resp->mblk = mp; 3386 3387 if (!verror && offset + resp->data_len == va.va_size) 3388 resp->eof = TRUE; 3389 else 3390 resp->eof = FALSE; 3391 3392 if (rdma_used) { 3393 if (!rdma_setup_read_data4(args, resp)) { 3394 *cs->statusp = resp->status = NFS4ERR_INVAL; 3395 } 3396 } else { 3397 resp->wlist = NULL; 3398 } 3399 3400 out: 3401 if (in_crit) 3402 nbl_end_crit(vp); 3403 3404 if (iovp != NULL) 3405 kmem_free(iovp, iovcnt * sizeof (struct iovec)); 3406 3407 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, 3408 READ4res *, resp); 3409 } 3410 3411 static void 3412 rfs4_op_read_free(nfs_resop4 *resop) 3413 { 3414 READ4res *resp = &resop->nfs_resop4_u.opread; 3415 3416 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3417 freemsg(resp->mblk); 3418 resp->mblk = NULL; 3419 resp->data_val = NULL; 3420 resp->data_len = 0; 3421 } 3422 } 3423 3424 static void 3425 rfs4_op_readdir_free(nfs_resop4 * resop) 3426 { 3427 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; 3428 3429 if (resp->status == NFS4_OK && resp->mblk != NULL) { 3430 freeb(resp->mblk); 3431 resp->mblk = NULL; 3432 resp->data_len = 0; 3433 } 3434 } 3435 3436 3437 /* ARGSUSED */ 3438 static void 3439 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 3440 struct compound_state *cs) 3441 { 3442 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; 3443 int error; 3444 vnode_t *vp; 3445 struct exportinfo *exi, *sav_exi; 3446 nfs_fh4_fmt_t *fh_fmtp; 3447 3448 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); 3449 3450 if (cs->vp) { 3451 VN_RELE(cs->vp); 3452 cs->vp = NULL; 3453 } 3454 3455 if (cs->cr) 3456 crfree(cs->cr); 3457 3458 cs->cr = crdup(cs->basecr); 3459 3460 vp = exi_public->exi_vp; 3461 if (vp == NULL) { 3462 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3463 goto out; 3464 } 3465 3466 error = makefh4(&cs->fh, vp, exi_public); 3467 if (error != 0) { 3468 *cs->statusp = resp->status = puterrno4(error); 3469 goto out; 3470 } 3471 sav_exi = cs->exi; 3472 if (exi_public == exi_root) { 3473 /* 3474 * No filesystem is actually shared public, so we default 3475 * to exi_root. In this case, we must check whether root 3476 * is exported. 3477 */ 3478 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; 3479 3480 /* 3481 * if root filesystem is exported, the exportinfo struct that we 3482 * should use is what checkexport4 returns, because root_exi is 3483 * actually a mostly empty struct. 3484 */ 3485 exi = checkexport4(&fh_fmtp->fh4_fsid, 3486 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 3487 cs->exi = ((exi != NULL) ? exi : exi_public); 3488 } else { 3489 /* 3490 * it's a properly shared filesystem 3491 */ 3492 cs->exi = exi_public; 3493 } 3494 3495 if (is_system_labeled()) { 3496 bslabel_t *clabel; 3497 3498 ASSERT(req->rq_label != NULL); 3499 clabel = req->rq_label; 3500 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, 3501 "got client label from request(1)", 3502 struct svc_req *, req); 3503 if (!blequal(&l_admin_low->tsl_label, clabel)) { 3504 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, 3505 cs->exi)) { 3506 *cs->statusp = resp->status = 3507 NFS4ERR_SERVERFAULT; 3508 goto out; 3509 } 3510 } 3511 } 3512 3513 VN_HOLD(vp); 3514 cs->vp = vp; 3515 3516 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3517 VN_RELE(cs->vp); 3518 cs->vp = NULL; 3519 cs->exi = sav_exi; 3520 goto out; 3521 } 3522 3523 *cs->statusp = resp->status = NFS4_OK; 3524 out: 3525 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, 3526 PUTPUBFH4res *, resp); 3527 } 3528 3529 /* 3530 * XXX - issue with put*fh operations. Suppose /export/home is exported. 3531 * Suppose an NFS client goes to mount /export/home/joe. If /export, home, 3532 * or joe have restrictive search permissions, then we shouldn't let 3533 * the client get a file handle. This is easy to enforce. However, we 3534 * don't know what security flavor should be used until we resolve the 3535 * path name. Another complication is uid mapping. If root is 3536 * the user, then it will be mapped to the anonymous user by default, 3537 * but we won't know that till we've resolved the path name. And we won't 3538 * know what the anonymous user is. 3539 * Luckily, SECINFO is specified to take a full filename. 3540 * So what we will have to in rfs4_op_lookup is check that flavor of 3541 * the target object matches that of the request, and if root was the 3542 * caller, check for the root= and anon= options, and if necessary, 3543 * repeat the lookup using the right cred_t. But that's not done yet. 3544 */ 3545 /* ARGSUSED */ 3546 static void 3547 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3548 struct compound_state *cs) 3549 { 3550 PUTFH4args *args = &argop->nfs_argop4_u.opputfh; 3551 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; 3552 nfs_fh4_fmt_t *fh_fmtp; 3553 3554 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, 3555 PUTFH4args *, args); 3556 3557 if (cs->vp) { 3558 VN_RELE(cs->vp); 3559 cs->vp = NULL; 3560 } 3561 3562 if (cs->cr) { 3563 crfree(cs->cr); 3564 cs->cr = NULL; 3565 } 3566 3567 if (args->object.nfs_fh4_len < NFS_FH4_LEN) { 3568 *cs->statusp = resp->status = NFS4ERR_BADHANDLE; 3569 goto out; 3570 } 3571 3572 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; 3573 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, 3574 NULL); 3575 3576 if (cs->exi == NULL) { 3577 *cs->statusp = resp->status = NFS4ERR_STALE; 3578 goto out; 3579 } 3580 3581 cs->cr = crdup(cs->basecr); 3582 3583 ASSERT(cs->cr != NULL); 3584 3585 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { 3586 *cs->statusp = resp->status; 3587 goto out; 3588 } 3589 3590 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3591 VN_RELE(cs->vp); 3592 cs->vp = NULL; 3593 goto out; 3594 } 3595 3596 nfs_fh4_copy(&args->object, &cs->fh); 3597 *cs->statusp = resp->status = NFS4_OK; 3598 cs->deleg = FALSE; 3599 3600 out: 3601 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, 3602 PUTFH4res *, resp); 3603 } 3604 3605 /* ARGSUSED */ 3606 static void 3607 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3608 struct compound_state *cs) 3609 { 3610 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; 3611 int error; 3612 fid_t fid; 3613 struct exportinfo *exi, *sav_exi; 3614 3615 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); 3616 3617 if (cs->vp) { 3618 VN_RELE(cs->vp); 3619 cs->vp = NULL; 3620 } 3621 3622 if (cs->cr) 3623 crfree(cs->cr); 3624 3625 cs->cr = crdup(cs->basecr); 3626 3627 /* 3628 * Using rootdir, the system root vnode, 3629 * get its fid. 3630 */ 3631 bzero(&fid, sizeof (fid)); 3632 fid.fid_len = MAXFIDSZ; 3633 error = vop_fid_pseudo(rootdir, &fid); 3634 if (error != 0) { 3635 *cs->statusp = resp->status = puterrno4(error); 3636 goto out; 3637 } 3638 3639 /* 3640 * Then use the root fsid & fid it to find out if it's exported 3641 * 3642 * If the server root isn't exported directly, then 3643 * it should at least be a pseudo export based on 3644 * one or more exports further down in the server's 3645 * file tree. 3646 */ 3647 exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); 3648 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { 3649 NFS4_DEBUG(rfs4_debug, 3650 (CE_WARN, "rfs4_op_putrootfh: export check failure")); 3651 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 3652 goto out; 3653 } 3654 3655 /* 3656 * Now make a filehandle based on the root 3657 * export and root vnode. 3658 */ 3659 error = makefh4(&cs->fh, rootdir, exi); 3660 if (error != 0) { 3661 *cs->statusp = resp->status = puterrno4(error); 3662 goto out; 3663 } 3664 3665 sav_exi = cs->exi; 3666 cs->exi = exi; 3667 3668 VN_HOLD(rootdir); 3669 cs->vp = rootdir; 3670 3671 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { 3672 VN_RELE(rootdir); 3673 cs->vp = NULL; 3674 cs->exi = sav_exi; 3675 goto out; 3676 } 3677 3678 *cs->statusp = resp->status = NFS4_OK; 3679 cs->deleg = FALSE; 3680 out: 3681 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, 3682 PUTROOTFH4res *, resp); 3683 } 3684 3685 /* 3686 * set_rdattr_params sets up the variables used to manage what information 3687 * to get for each directory entry. 3688 */ 3689 static nfsstat4 3690 set_rdattr_params(struct nfs4_svgetit_arg *sargp, 3691 bitmap4 attrs, bool_t *need_to_lookup) 3692 { 3693 uint_t va_mask; 3694 nfsstat4 status; 3695 bitmap4 objbits; 3696 3697 status = bitmap4_to_attrmask(attrs, sargp); 3698 if (status != NFS4_OK) { 3699 /* 3700 * could not even figure attr mask 3701 */ 3702 return (status); 3703 } 3704 va_mask = sargp->vap->va_mask; 3705 3706 /* 3707 * dirent's d_ino is always correct value for mounted_on_fileid. 3708 * mntdfid_set is set once here, but mounted_on_fileid is 3709 * set in main dirent processing loop for each dirent. 3710 * The mntdfid_set is a simple optimization that lets the 3711 * server attr code avoid work when caller is readdir. 3712 */ 3713 sargp->mntdfid_set = TRUE; 3714 3715 /* 3716 * Lookup entry only if client asked for any of the following: 3717 * a) vattr attrs 3718 * b) vfs attrs 3719 * c) attrs w/per-object scope requested (change, filehandle, etc) 3720 * other than mounted_on_fileid (which we can take from dirent) 3721 */ 3722 objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; 3723 3724 if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) 3725 *need_to_lookup = TRUE; 3726 else 3727 *need_to_lookup = FALSE; 3728 3729 if (sargp->sbp == NULL) 3730 return (NFS4_OK); 3731 3732 /* 3733 * If filesystem attrs are requested, get them now from the 3734 * directory vp, as most entries will have same filesystem. The only 3735 * exception are mounted over entries but we handle 3736 * those as we go (XXX mounted over detection not yet implemented). 3737 */ 3738 sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ 3739 status = bitmap4_get_sysattrs(sargp); 3740 sargp->vap->va_mask = va_mask; 3741 3742 if ((status != NFS4_OK) && sargp->rdattr_error_req) { 3743 /* 3744 * Failed to get filesystem attributes. 3745 * Return a rdattr_error for each entry, but don't fail. 3746 * However, don't get any obj-dependent attrs. 3747 */ 3748 sargp->rdattr_error = status; /* for rdattr_error */ 3749 *need_to_lookup = FALSE; 3750 /* 3751 * At least get fileid for regular readdir output 3752 */ 3753 sargp->vap->va_mask &= AT_NODEID; 3754 status = NFS4_OK; 3755 } 3756 3757 return (status); 3758 } 3759 3760 /* 3761 * readlink: args: CURRENT_FH. 3762 * res: status. If success - CURRENT_FH unchanged, return linktext. 3763 */ 3764 3765 /* ARGSUSED */ 3766 static void 3767 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 3768 struct compound_state *cs) 3769 { 3770 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3771 int error; 3772 vnode_t *vp; 3773 struct iovec iov; 3774 struct vattr va; 3775 struct uio uio; 3776 char *data; 3777 struct sockaddr *ca; 3778 char *name = NULL; 3779 int is_referral; 3780 3781 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); 3782 3783 /* CURRENT_FH: directory */ 3784 vp = cs->vp; 3785 if (vp == NULL) { 3786 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 3787 goto out; 3788 } 3789 3790 if (cs->access == CS_ACCESS_DENIED) { 3791 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3792 goto out; 3793 } 3794 3795 /* Is it a referral? */ 3796 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { 3797 3798 is_referral = 1; 3799 3800 } else { 3801 3802 is_referral = 0; 3803 3804 if (vp->v_type == VDIR) { 3805 *cs->statusp = resp->status = NFS4ERR_ISDIR; 3806 goto out; 3807 } 3808 3809 if (vp->v_type != VLNK) { 3810 *cs->statusp = resp->status = NFS4ERR_INVAL; 3811 goto out; 3812 } 3813 3814 } 3815 3816 va.va_mask = AT_MODE; 3817 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 3818 if (error) { 3819 *cs->statusp = resp->status = puterrno4(error); 3820 goto out; 3821 } 3822 3823 if (MANDLOCK(vp, va.va_mode)) { 3824 *cs->statusp = resp->status = NFS4ERR_ACCESS; 3825 goto out; 3826 } 3827 3828 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); 3829 3830 if (is_referral) { 3831 char *s; 3832 size_t strsz; 3833 3834 /* Get an artificial symlink based on a referral */ 3835 s = build_symlink(vp, cs->cr, &strsz); 3836 global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++; 3837 DTRACE_PROBE2(nfs4serv__func__referral__reflink, 3838 vnode_t *, vp, char *, s); 3839 if (s == NULL) 3840 error = EINVAL; 3841 else { 3842 error = 0; 3843 (void) strlcpy(data, s, MAXPATHLEN + 1); 3844 kmem_free(s, strsz); 3845 } 3846 3847 } else { 3848 3849 iov.iov_base = data; 3850 iov.iov_len = MAXPATHLEN; 3851 uio.uio_iov = &iov; 3852 uio.uio_iovcnt = 1; 3853 uio.uio_segflg = UIO_SYSSPACE; 3854 uio.uio_extflg = UIO_COPY_CACHED; 3855 uio.uio_loffset = 0; 3856 uio.uio_resid = MAXPATHLEN; 3857 3858 error = VOP_READLINK(vp, &uio, cs->cr, NULL); 3859 3860 if (!error) 3861 *(data + MAXPATHLEN - uio.uio_resid) = '\0'; 3862 } 3863 3864 if (error) { 3865 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3866 *cs->statusp = resp->status = puterrno4(error); 3867 goto out; 3868 } 3869 3870 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 3871 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, 3872 MAXPATHLEN + 1); 3873 3874 if (name == NULL) { 3875 /* 3876 * Even though the conversion failed, we return 3877 * something. We just don't translate it. 3878 */ 3879 name = data; 3880 } 3881 3882 /* 3883 * treat link name as data 3884 */ 3885 (void) str_to_utf8(name, (utf8string *)&resp->link); 3886 3887 if (name != data) 3888 kmem_free(name, MAXPATHLEN + 1); 3889 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); 3890 *cs->statusp = resp->status = NFS4_OK; 3891 3892 out: 3893 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, 3894 READLINK4res *, resp); 3895 } 3896 3897 static void 3898 rfs4_op_readlink_free(nfs_resop4 *resop) 3899 { 3900 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; 3901 utf8string *symlink = (utf8string *)&resp->link; 3902 3903 if (symlink->utf8string_val) { 3904 UTF8STRING_FREE(*symlink) 3905 } 3906 } 3907 3908 /* 3909 * release_lockowner: 3910 * Release any state associated with the supplied 3911 * lockowner. Note if any lo_state is holding locks we will not 3912 * rele that lo_state and thus the lockowner will not be destroyed. 3913 * A client using lock after the lock owner stateid has been released 3914 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have 3915 * to reissue the lock with new_lock_owner set to TRUE. 3916 * args: lock_owner 3917 * res: status 3918 */ 3919 /* ARGSUSED */ 3920 static void 3921 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, 3922 struct svc_req *req, struct compound_state *cs) 3923 { 3924 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; 3925 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; 3926 rfs4_lockowner_t *lo; 3927 rfs4_openowner_t *oo; 3928 rfs4_state_t *sp; 3929 rfs4_lo_state_t *lsp; 3930 rfs4_client_t *cp; 3931 bool_t create = FALSE; 3932 locklist_t *llist; 3933 sysid_t sysid; 3934 3935 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, 3936 cs, RELEASE_LOCKOWNER4args *, ap); 3937 3938 /* Make sure there is a clientid around for this request */ 3939 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); 3940 3941 if (cp == NULL) { 3942 *cs->statusp = resp->status = 3943 rfs4_check_clientid(&ap->lock_owner.clientid, 0); 3944 goto out; 3945 } 3946 rfs4_client_rele(cp); 3947 3948 lo = rfs4_findlockowner(&ap->lock_owner, &create); 3949 if (lo == NULL) { 3950 *cs->statusp = resp->status = NFS4_OK; 3951 goto out; 3952 } 3953 ASSERT(lo->rl_client != NULL); 3954 3955 /* 3956 * Check for EXPIRED client. If so will reap state with in a lease 3957 * period or on next set_clientid_confirm step 3958 */ 3959 if (rfs4_lease_expired(lo->rl_client)) { 3960 rfs4_lockowner_rele(lo); 3961 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 3962 goto out; 3963 } 3964 3965 /* 3966 * If no sysid has been assigned, then no locks exist; just return. 3967 */ 3968 rfs4_dbe_lock(lo->rl_client->rc_dbe); 3969 if (lo->rl_client->rc_sysidt == LM_NOSYSID) { 3970 rfs4_lockowner_rele(lo); 3971 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3972 goto out; 3973 } 3974 3975 sysid = lo->rl_client->rc_sysidt; 3976 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 3977 3978 /* 3979 * Mark the lockowner invalid. 3980 */ 3981 rfs4_dbe_hide(lo->rl_dbe); 3982 3983 /* 3984 * sysid-pid pair should now not be used since the lockowner is 3985 * invalid. If the client were to instantiate the lockowner again 3986 * it would be assigned a new pid. Thus we can get the list of 3987 * current locks. 3988 */ 3989 3990 llist = flk_get_active_locks(sysid, lo->rl_pid); 3991 /* If we are still holding locks fail */ 3992 if (llist != NULL) { 3993 3994 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; 3995 3996 flk_free_locklist(llist); 3997 /* 3998 * We need to unhide the lockowner so the client can 3999 * try it again. The bad thing here is if the client 4000 * has a logic error that took it here in the first place 4001 * he probably has lost accounting of the locks that it 4002 * is holding. So we may have dangling state until the 4003 * open owner state is reaped via close. One scenario 4004 * that could possibly occur is that the client has 4005 * sent the unlock request(s) in separate threads 4006 * and has not waited for the replies before sending the 4007 * RELEASE_LOCKOWNER request. Presumably, it would expect 4008 * and deal appropriately with NFS4ERR_LOCKS_HELD, by 4009 * reissuing the request. 4010 */ 4011 rfs4_dbe_unhide(lo->rl_dbe); 4012 rfs4_lockowner_rele(lo); 4013 goto out; 4014 } 4015 4016 /* 4017 * For the corresponding client we need to check each open 4018 * owner for any opens that have lockowner state associated 4019 * with this lockowner. 4020 */ 4021 4022 rfs4_dbe_lock(lo->rl_client->rc_dbe); 4023 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; 4024 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { 4025 4026 rfs4_dbe_lock(oo->ro_dbe); 4027 for (sp = list_head(&oo->ro_statelist); sp != NULL; 4028 sp = list_next(&oo->ro_statelist, sp)) { 4029 4030 rfs4_dbe_lock(sp->rs_dbe); 4031 for (lsp = list_head(&sp->rs_lostatelist); 4032 lsp != NULL; 4033 lsp = list_next(&sp->rs_lostatelist, lsp)) { 4034 if (lsp->rls_locker == lo) { 4035 rfs4_dbe_lock(lsp->rls_dbe); 4036 rfs4_dbe_invalidate(lsp->rls_dbe); 4037 rfs4_dbe_unlock(lsp->rls_dbe); 4038 } 4039 } 4040 rfs4_dbe_unlock(sp->rs_dbe); 4041 } 4042 rfs4_dbe_unlock(oo->ro_dbe); 4043 } 4044 rfs4_dbe_unlock(lo->rl_client->rc_dbe); 4045 4046 rfs4_lockowner_rele(lo); 4047 4048 *cs->statusp = resp->status = NFS4_OK; 4049 4050 out: 4051 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, 4052 cs, RELEASE_LOCKOWNER4res *, resp); 4053 } 4054 4055 /* 4056 * short utility function to lookup a file and recall the delegation 4057 */ 4058 static rfs4_file_t * 4059 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, 4060 int *lkup_error, cred_t *cr) 4061 { 4062 vnode_t *vp; 4063 rfs4_file_t *fp = NULL; 4064 bool_t fcreate = FALSE; 4065 int error; 4066 4067 if (vpp) 4068 *vpp = NULL; 4069 4070 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, 4071 NULL)) == 0) { 4072 if (vp->v_type == VREG) 4073 fp = rfs4_findfile(vp, NULL, &fcreate); 4074 if (vpp) 4075 *vpp = vp; 4076 else 4077 VN_RELE(vp); 4078 } 4079 4080 if (lkup_error) 4081 *lkup_error = error; 4082 4083 return (fp); 4084 } 4085 4086 /* 4087 * remove: args: CURRENT_FH: directory; name. 4088 * res: status. If success - CURRENT_FH unchanged, return change_info 4089 * for directory. 4090 */ 4091 /* ARGSUSED */ 4092 static void 4093 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4094 struct compound_state *cs) 4095 { 4096 REMOVE4args *args = &argop->nfs_argop4_u.opremove; 4097 REMOVE4res *resp = &resop->nfs_resop4_u.opremove; 4098 int error; 4099 vnode_t *dvp, *vp; 4100 struct vattr bdva, idva, adva; 4101 char *nm; 4102 uint_t len; 4103 rfs4_file_t *fp; 4104 int in_crit = 0; 4105 bslabel_t *clabel; 4106 struct sockaddr *ca; 4107 char *name = NULL; 4108 nfsstat4 status; 4109 4110 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, 4111 REMOVE4args *, args); 4112 4113 /* CURRENT_FH: directory */ 4114 dvp = cs->vp; 4115 if (dvp == NULL) { 4116 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4117 goto out; 4118 } 4119 4120 if (cs->access == CS_ACCESS_DENIED) { 4121 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4122 goto out; 4123 } 4124 4125 /* 4126 * If there is an unshared filesystem mounted on this vnode, 4127 * Do not allow to remove anything in this directory. 4128 */ 4129 if (vn_ismntpt(dvp)) { 4130 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4131 goto out; 4132 } 4133 4134 if (dvp->v_type != VDIR) { 4135 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4136 goto out; 4137 } 4138 4139 status = utf8_dir_verify(&args->target); 4140 if (status != NFS4_OK) { 4141 *cs->statusp = resp->status = status; 4142 goto out; 4143 } 4144 4145 /* 4146 * Lookup the file so that we can check if it's a directory 4147 */ 4148 nm = utf8_to_fn(&args->target, &len, NULL); 4149 if (nm == NULL) { 4150 *cs->statusp = resp->status = NFS4ERR_INVAL; 4151 goto out; 4152 } 4153 4154 if (len > MAXNAMELEN) { 4155 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4156 kmem_free(nm, len); 4157 goto out; 4158 } 4159 4160 if (rdonly4(req, cs)) { 4161 *cs->statusp = resp->status = NFS4ERR_ROFS; 4162 kmem_free(nm, len); 4163 goto out; 4164 } 4165 4166 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4167 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 4168 MAXPATHLEN + 1); 4169 4170 if (name == NULL) { 4171 *cs->statusp = resp->status = NFS4ERR_INVAL; 4172 kmem_free(nm, len); 4173 goto out; 4174 } 4175 4176 /* 4177 * Lookup the file to determine type and while we are see if 4178 * there is a file struct around and check for delegation. 4179 * We don't need to acquire va_seq before this lookup, if 4180 * it causes an update, cinfo.before will not match, which will 4181 * trigger a cache flush even if atomic is TRUE. 4182 */ 4183 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { 4184 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4185 NULL)) { 4186 VN_RELE(vp); 4187 rfs4_file_rele(fp); 4188 *cs->statusp = resp->status = NFS4ERR_DELAY; 4189 if (nm != name) 4190 kmem_free(name, MAXPATHLEN + 1); 4191 kmem_free(nm, len); 4192 goto out; 4193 } 4194 } 4195 4196 /* Didn't find anything to remove */ 4197 if (vp == NULL) { 4198 *cs->statusp = resp->status = error; 4199 if (nm != name) 4200 kmem_free(name, MAXPATHLEN + 1); 4201 kmem_free(nm, len); 4202 goto out; 4203 } 4204 4205 if (nbl_need_check(vp)) { 4206 nbl_start_crit(vp, RW_READER); 4207 in_crit = 1; 4208 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { 4209 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4210 if (nm != name) 4211 kmem_free(name, MAXPATHLEN + 1); 4212 kmem_free(nm, len); 4213 nbl_end_crit(vp); 4214 VN_RELE(vp); 4215 if (fp) { 4216 rfs4_clear_dont_grant(fp); 4217 rfs4_file_rele(fp); 4218 } 4219 goto out; 4220 } 4221 } 4222 4223 /* check label before allowing removal */ 4224 if (is_system_labeled()) { 4225 ASSERT(req->rq_label != NULL); 4226 clabel = req->rq_label; 4227 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 4228 "got client label from request(1)", 4229 struct svc_req *, req); 4230 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4231 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, 4232 cs->exi)) { 4233 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4234 if (name != nm) 4235 kmem_free(name, MAXPATHLEN + 1); 4236 kmem_free(nm, len); 4237 if (in_crit) 4238 nbl_end_crit(vp); 4239 VN_RELE(vp); 4240 if (fp) { 4241 rfs4_clear_dont_grant(fp); 4242 rfs4_file_rele(fp); 4243 } 4244 goto out; 4245 } 4246 } 4247 } 4248 4249 /* Get dir "before" change value */ 4250 bdva.va_mask = AT_CTIME|AT_SEQ; 4251 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); 4252 if (error) { 4253 *cs->statusp = resp->status = puterrno4(error); 4254 if (nm != name) 4255 kmem_free(name, MAXPATHLEN + 1); 4256 kmem_free(nm, len); 4257 if (in_crit) 4258 nbl_end_crit(vp); 4259 VN_RELE(vp); 4260 if (fp) { 4261 rfs4_clear_dont_grant(fp); 4262 rfs4_file_rele(fp); 4263 } 4264 goto out; 4265 } 4266 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) 4267 4268 /* Actually do the REMOVE operation */ 4269 if (vp->v_type == VDIR) { 4270 /* 4271 * Can't remove a directory that has a mounted-on filesystem. 4272 */ 4273 if (vn_ismntpt(vp)) { 4274 error = EACCES; 4275 } else { 4276 /* 4277 * System V defines rmdir to return EEXIST, 4278 * not ENOTEMPTY, if the directory is not 4279 * empty. A System V NFS server needs to map 4280 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to 4281 * transmit over the wire. 4282 */ 4283 if ((error = VOP_RMDIR(dvp, name, rootdir, cs->cr, 4284 NULL, 0)) == EEXIST) 4285 error = ENOTEMPTY; 4286 } 4287 4288 if (in_crit) 4289 nbl_end_crit(vp); 4290 VN_RELE(vp); 4291 } else { 4292 if (!in_crit) 4293 VN_RELE(vp); 4294 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && 4295 fp != NULL) { 4296 struct vattr va; 4297 vnode_t *tvp; 4298 4299 rfs4_dbe_lock(fp->rf_dbe); 4300 tvp = fp->rf_vp; 4301 if (tvp) 4302 VN_HOLD(tvp); 4303 rfs4_dbe_unlock(fp->rf_dbe); 4304 4305 if (tvp) { 4306 /* 4307 * This is va_seq safe because we are not 4308 * manipulating dvp. 4309 */ 4310 va.va_mask = AT_NLINK; 4311 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4312 va.va_nlink == 0) { 4313 /* Remove state on file remove */ 4314 if (in_crit) { 4315 nbl_end_crit(vp); 4316 VN_RELE(vp); 4317 in_crit = 0; 4318 } 4319 rfs4_close_all_state(fp); 4320 } 4321 VN_RELE(tvp); 4322 } 4323 } 4324 4325 if (in_crit) { 4326 nbl_end_crit(vp); 4327 VN_RELE(vp); 4328 } 4329 } 4330 4331 if (fp) { 4332 rfs4_clear_dont_grant(fp); 4333 rfs4_file_rele(fp); 4334 } 4335 if (nm != name) 4336 kmem_free(name, MAXPATHLEN + 1); 4337 kmem_free(nm, len); 4338 4339 if (error) { 4340 *cs->statusp = resp->status = puterrno4(error); 4341 goto out; 4342 } 4343 4344 /* 4345 * Get the initial "after" sequence number, if it fails, set to zero 4346 */ 4347 idva.va_mask = AT_SEQ; 4348 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) 4349 idva.va_seq = 0; 4350 4351 /* 4352 * Force modified data and metadata out to stable storage. 4353 */ 4354 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 4355 4356 /* 4357 * Get "after" change value, if it fails, simply return the 4358 * before value. 4359 */ 4360 adva.va_mask = AT_CTIME|AT_SEQ; 4361 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { 4362 adva.va_ctime = bdva.va_ctime; 4363 adva.va_seq = 0; 4364 } 4365 4366 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) 4367 4368 /* 4369 * The cinfo.atomic = TRUE only if we have 4370 * non-zero va_seq's, and it has incremented by exactly one 4371 * during the VOP_REMOVE/RMDIR and it didn't change during 4372 * the VOP_FSYNC. 4373 */ 4374 if (bdva.va_seq && idva.va_seq && adva.va_seq && 4375 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) 4376 resp->cinfo.atomic = TRUE; 4377 else 4378 resp->cinfo.atomic = FALSE; 4379 4380 *cs->statusp = resp->status = NFS4_OK; 4381 4382 out: 4383 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, 4384 REMOVE4res *, resp); 4385 } 4386 4387 /* 4388 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, 4389 * oldname and newname. 4390 * res: status. If success - CURRENT_FH unchanged, return change_info 4391 * for both from and target directories. 4392 */ 4393 /* ARGSUSED */ 4394 static void 4395 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4396 struct compound_state *cs) 4397 { 4398 RENAME4args *args = &argop->nfs_argop4_u.oprename; 4399 RENAME4res *resp = &resop->nfs_resop4_u.oprename; 4400 int error; 4401 vnode_t *odvp; 4402 vnode_t *ndvp; 4403 vnode_t *srcvp, *targvp; 4404 struct vattr obdva, oidva, oadva; 4405 struct vattr nbdva, nidva, nadva; 4406 char *onm, *nnm; 4407 uint_t olen, nlen; 4408 rfs4_file_t *fp, *sfp; 4409 int in_crit_src, in_crit_targ; 4410 int fp_rele_grant_hold, sfp_rele_grant_hold; 4411 bslabel_t *clabel; 4412 struct sockaddr *ca; 4413 char *converted_onm = NULL; 4414 char *converted_nnm = NULL; 4415 nfsstat4 status; 4416 4417 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, 4418 RENAME4args *, args); 4419 4420 fp = sfp = NULL; 4421 srcvp = targvp = NULL; 4422 in_crit_src = in_crit_targ = 0; 4423 fp_rele_grant_hold = sfp_rele_grant_hold = 0; 4424 4425 /* CURRENT_FH: target directory */ 4426 ndvp = cs->vp; 4427 if (ndvp == NULL) { 4428 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4429 goto out; 4430 } 4431 4432 /* SAVED_FH: from directory */ 4433 odvp = cs->saved_vp; 4434 if (odvp == NULL) { 4435 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4436 goto out; 4437 } 4438 4439 if (cs->access == CS_ACCESS_DENIED) { 4440 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4441 goto out; 4442 } 4443 4444 /* 4445 * If there is an unshared filesystem mounted on this vnode, 4446 * do not allow to rename objects in this directory. 4447 */ 4448 if (vn_ismntpt(odvp)) { 4449 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4450 goto out; 4451 } 4452 4453 /* 4454 * If there is an unshared filesystem mounted on this vnode, 4455 * do not allow to rename to this directory. 4456 */ 4457 if (vn_ismntpt(ndvp)) { 4458 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4459 goto out; 4460 } 4461 4462 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { 4463 *cs->statusp = resp->status = NFS4ERR_NOTDIR; 4464 goto out; 4465 } 4466 4467 if (cs->saved_exi != cs->exi) { 4468 *cs->statusp = resp->status = NFS4ERR_XDEV; 4469 goto out; 4470 } 4471 4472 status = utf8_dir_verify(&args->oldname); 4473 if (status != NFS4_OK) { 4474 *cs->statusp = resp->status = status; 4475 goto out; 4476 } 4477 4478 status = utf8_dir_verify(&args->newname); 4479 if (status != NFS4_OK) { 4480 *cs->statusp = resp->status = status; 4481 goto out; 4482 } 4483 4484 onm = utf8_to_fn(&args->oldname, &olen, NULL); 4485 if (onm == NULL) { 4486 *cs->statusp = resp->status = NFS4ERR_INVAL; 4487 goto out; 4488 } 4489 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 4490 nlen = MAXPATHLEN + 1; 4491 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, 4492 nlen); 4493 4494 if (converted_onm == NULL) { 4495 *cs->statusp = resp->status = NFS4ERR_INVAL; 4496 kmem_free(onm, olen); 4497 goto out; 4498 } 4499 4500 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4501 if (nnm == NULL) { 4502 *cs->statusp = resp->status = NFS4ERR_INVAL; 4503 if (onm != converted_onm) 4504 kmem_free(converted_onm, MAXPATHLEN + 1); 4505 kmem_free(onm, olen); 4506 goto out; 4507 } 4508 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, 4509 MAXPATHLEN + 1); 4510 4511 if (converted_nnm == NULL) { 4512 *cs->statusp = resp->status = NFS4ERR_INVAL; 4513 kmem_free(nnm, nlen); 4514 nnm = NULL; 4515 if (onm != converted_onm) 4516 kmem_free(converted_onm, MAXPATHLEN + 1); 4517 kmem_free(onm, olen); 4518 goto out; 4519 } 4520 4521 4522 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { 4523 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; 4524 kmem_free(onm, olen); 4525 kmem_free(nnm, nlen); 4526 goto out; 4527 } 4528 4529 4530 if (rdonly4(req, cs)) { 4531 *cs->statusp = resp->status = NFS4ERR_ROFS; 4532 if (onm != converted_onm) 4533 kmem_free(converted_onm, MAXPATHLEN + 1); 4534 kmem_free(onm, olen); 4535 if (nnm != converted_nnm) 4536 kmem_free(converted_nnm, MAXPATHLEN + 1); 4537 kmem_free(nnm, nlen); 4538 goto out; 4539 } 4540 4541 /* check label of the target dir */ 4542 if (is_system_labeled()) { 4543 ASSERT(req->rq_label != NULL); 4544 clabel = req->rq_label; 4545 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, 4546 "got client label from request(1)", 4547 struct svc_req *, req); 4548 if (!blequal(&l_admin_low->tsl_label, clabel)) { 4549 if (!do_rfs_label_check(clabel, ndvp, 4550 EQUALITY_CHECK, cs->exi)) { 4551 *cs->statusp = resp->status = NFS4ERR_ACCESS; 4552 goto err_out; 4553 } 4554 } 4555 } 4556 4557 /* 4558 * Is the source a file and have a delegation? 4559 * We don't need to acquire va_seq before these lookups, if 4560 * it causes an update, cinfo.before will not match, which will 4561 * trigger a cache flush even if atomic is TRUE. 4562 */ 4563 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, 4564 &error, cs->cr)) { 4565 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, 4566 NULL)) { 4567 *cs->statusp = resp->status = NFS4ERR_DELAY; 4568 goto err_out; 4569 } 4570 } 4571 4572 if (srcvp == NULL) { 4573 *cs->statusp = resp->status = puterrno4(error); 4574 if (onm != converted_onm) 4575 kmem_free(converted_onm, MAXPATHLEN + 1); 4576 kmem_free(onm, olen); 4577 if (nnm != converted_nnm) 4578 kmem_free(converted_nnm, MAXPATHLEN + 1); 4579 kmem_free(nnm, nlen); 4580 goto out; 4581 } 4582 4583 sfp_rele_grant_hold = 1; 4584 4585 /* Does the destination exist and a file and have a delegation? */ 4586 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, 4587 NULL, cs->cr)) { 4588 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, 4589 NULL)) { 4590 *cs->statusp = resp->status = NFS4ERR_DELAY; 4591 goto err_out; 4592 } 4593 } 4594 fp_rele_grant_hold = 1; 4595 4596 4597 /* Check for NBMAND lock on both source and target */ 4598 if (nbl_need_check(srcvp)) { 4599 nbl_start_crit(srcvp, RW_READER); 4600 in_crit_src = 1; 4601 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { 4602 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4603 goto err_out; 4604 } 4605 } 4606 4607 if (targvp && nbl_need_check(targvp)) { 4608 nbl_start_crit(targvp, RW_READER); 4609 in_crit_targ = 1; 4610 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { 4611 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; 4612 goto err_out; 4613 } 4614 } 4615 4616 /* Get source "before" change value */ 4617 obdva.va_mask = AT_CTIME|AT_SEQ; 4618 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); 4619 if (!error) { 4620 nbdva.va_mask = AT_CTIME|AT_SEQ; 4621 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); 4622 } 4623 if (error) { 4624 *cs->statusp = resp->status = puterrno4(error); 4625 goto err_out; 4626 } 4627 4628 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) 4629 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) 4630 4631 if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, 4632 cs->cr, NULL, 0)) == 0 && fp != NULL) { 4633 struct vattr va; 4634 vnode_t *tvp; 4635 4636 rfs4_dbe_lock(fp->rf_dbe); 4637 tvp = fp->rf_vp; 4638 if (tvp) 4639 VN_HOLD(tvp); 4640 rfs4_dbe_unlock(fp->rf_dbe); 4641 4642 if (tvp) { 4643 va.va_mask = AT_NLINK; 4644 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && 4645 va.va_nlink == 0) { 4646 /* The file is gone and so should the state */ 4647 if (in_crit_targ) { 4648 nbl_end_crit(targvp); 4649 in_crit_targ = 0; 4650 } 4651 rfs4_close_all_state(fp); 4652 } 4653 VN_RELE(tvp); 4654 } 4655 } 4656 if (error == 0) 4657 vn_renamepath(ndvp, srcvp, nnm, nlen - 1); 4658 4659 if (in_crit_src) 4660 nbl_end_crit(srcvp); 4661 if (srcvp) 4662 VN_RELE(srcvp); 4663 if (in_crit_targ) 4664 nbl_end_crit(targvp); 4665 if (targvp) 4666 VN_RELE(targvp); 4667 4668 if (sfp) { 4669 rfs4_clear_dont_grant(sfp); 4670 rfs4_file_rele(sfp); 4671 } 4672 if (fp) { 4673 rfs4_clear_dont_grant(fp); 4674 rfs4_file_rele(fp); 4675 } 4676 4677 if (converted_onm != onm) 4678 kmem_free(converted_onm, MAXPATHLEN + 1); 4679 kmem_free(onm, olen); 4680 if (converted_nnm != nnm) 4681 kmem_free(converted_nnm, MAXPATHLEN + 1); 4682 kmem_free(nnm, nlen); 4683 4684 /* 4685 * Get the initial "after" sequence number, if it fails, set to zero 4686 */ 4687 oidva.va_mask = AT_SEQ; 4688 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) 4689 oidva.va_seq = 0; 4690 4691 nidva.va_mask = AT_SEQ; 4692 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) 4693 nidva.va_seq = 0; 4694 4695 /* 4696 * Force modified data and metadata out to stable storage. 4697 */ 4698 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); 4699 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); 4700 4701 if (error) { 4702 *cs->statusp = resp->status = puterrno4(error); 4703 goto out; 4704 } 4705 4706 /* 4707 * Get "after" change values, if it fails, simply return the 4708 * before value. 4709 */ 4710 oadva.va_mask = AT_CTIME|AT_SEQ; 4711 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { 4712 oadva.va_ctime = obdva.va_ctime; 4713 oadva.va_seq = 0; 4714 } 4715 4716 nadva.va_mask = AT_CTIME|AT_SEQ; 4717 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { 4718 nadva.va_ctime = nbdva.va_ctime; 4719 nadva.va_seq = 0; 4720 } 4721 4722 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) 4723 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) 4724 4725 /* 4726 * The cinfo.atomic = TRUE only if we have 4727 * non-zero va_seq's, and it has incremented by exactly one 4728 * during the VOP_RENAME and it didn't change during the VOP_FSYNC. 4729 */ 4730 if (obdva.va_seq && oidva.va_seq && oadva.va_seq && 4731 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) 4732 resp->source_cinfo.atomic = TRUE; 4733 else 4734 resp->source_cinfo.atomic = FALSE; 4735 4736 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && 4737 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) 4738 resp->target_cinfo.atomic = TRUE; 4739 else 4740 resp->target_cinfo.atomic = FALSE; 4741 4742 #ifdef VOLATILE_FH_TEST 4743 { 4744 extern void add_volrnm_fh(struct exportinfo *, vnode_t *); 4745 4746 /* 4747 * Add the renamed file handle to the volatile rename list 4748 */ 4749 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { 4750 /* file handles may expire on rename */ 4751 vnode_t *vp; 4752 4753 nnm = utf8_to_fn(&args->newname, &nlen, NULL); 4754 /* 4755 * Already know that nnm will be a valid string 4756 */ 4757 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, 4758 NULL, NULL, NULL); 4759 kmem_free(nnm, nlen); 4760 if (!error) { 4761 add_volrnm_fh(cs->exi, vp); 4762 VN_RELE(vp); 4763 } 4764 } 4765 } 4766 #endif /* VOLATILE_FH_TEST */ 4767 4768 *cs->statusp = resp->status = NFS4_OK; 4769 out: 4770 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4771 RENAME4res *, resp); 4772 return; 4773 4774 err_out: 4775 if (onm != converted_onm) 4776 kmem_free(converted_onm, MAXPATHLEN + 1); 4777 if (onm != NULL) 4778 kmem_free(onm, olen); 4779 if (nnm != converted_nnm) 4780 kmem_free(converted_nnm, MAXPATHLEN + 1); 4781 if (nnm != NULL) 4782 kmem_free(nnm, nlen); 4783 4784 if (in_crit_src) nbl_end_crit(srcvp); 4785 if (in_crit_targ) nbl_end_crit(targvp); 4786 if (targvp) VN_RELE(targvp); 4787 if (srcvp) VN_RELE(srcvp); 4788 if (sfp) { 4789 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); 4790 rfs4_file_rele(sfp); 4791 } 4792 if (fp) { 4793 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); 4794 rfs4_file_rele(fp); 4795 } 4796 4797 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, 4798 RENAME4res *, resp); 4799 } 4800 4801 /* ARGSUSED */ 4802 static void 4803 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4804 struct compound_state *cs) 4805 { 4806 RENEW4args *args = &argop->nfs_argop4_u.oprenew; 4807 RENEW4res *resp = &resop->nfs_resop4_u.oprenew; 4808 rfs4_client_t *cp; 4809 4810 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, 4811 RENEW4args *, args); 4812 4813 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { 4814 *cs->statusp = resp->status = 4815 rfs4_check_clientid(&args->clientid, 0); 4816 goto out; 4817 } 4818 4819 if (rfs4_lease_expired(cp)) { 4820 rfs4_client_rele(cp); 4821 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 4822 goto out; 4823 } 4824 4825 rfs4_update_lease(cp); 4826 4827 mutex_enter(cp->rc_cbinfo.cb_lock); 4828 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { 4829 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; 4830 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; 4831 } else { 4832 *cs->statusp = resp->status = NFS4_OK; 4833 } 4834 mutex_exit(cp->rc_cbinfo.cb_lock); 4835 4836 rfs4_client_rele(cp); 4837 4838 out: 4839 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, 4840 RENEW4res *, resp); 4841 } 4842 4843 /* ARGSUSED */ 4844 static void 4845 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, 4846 struct compound_state *cs) 4847 { 4848 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; 4849 4850 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); 4851 4852 /* No need to check cs->access - we are not accessing any object */ 4853 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { 4854 *cs->statusp = resp->status = NFS4ERR_RESTOREFH; 4855 goto out; 4856 } 4857 if (cs->vp != NULL) { 4858 VN_RELE(cs->vp); 4859 } 4860 cs->vp = cs->saved_vp; 4861 cs->saved_vp = NULL; 4862 cs->exi = cs->saved_exi; 4863 nfs_fh4_copy(&cs->saved_fh, &cs->fh); 4864 *cs->statusp = resp->status = NFS4_OK; 4865 cs->deleg = FALSE; 4866 4867 out: 4868 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, 4869 RESTOREFH4res *, resp); 4870 } 4871 4872 /* ARGSUSED */ 4873 static void 4874 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 4875 struct compound_state *cs) 4876 { 4877 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; 4878 4879 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); 4880 4881 /* No need to check cs->access - we are not accessing any object */ 4882 if (cs->vp == NULL) { 4883 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 4884 goto out; 4885 } 4886 if (cs->saved_vp != NULL) { 4887 VN_RELE(cs->saved_vp); 4888 } 4889 cs->saved_vp = cs->vp; 4890 VN_HOLD(cs->saved_vp); 4891 cs->saved_exi = cs->exi; 4892 /* 4893 * since SAVEFH is fairly rare, don't alloc space for its fh 4894 * unless necessary. 4895 */ 4896 if (cs->saved_fh.nfs_fh4_val == NULL) { 4897 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); 4898 } 4899 nfs_fh4_copy(&cs->fh, &cs->saved_fh); 4900 *cs->statusp = resp->status = NFS4_OK; 4901 4902 out: 4903 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, 4904 SAVEFH4res *, resp); 4905 } 4906 4907 /* 4908 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to 4909 * return the bitmap of attrs that were set successfully. It is also 4910 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should 4911 * always be called only after rfs4_do_set_attrs(). 4912 * 4913 * Verify that the attributes are same as the expected ones. sargp->vap 4914 * and sargp->sbp contain the input attributes as translated from fattr4. 4915 * 4916 * This function verifies only the attrs that correspond to a vattr or 4917 * vfsstat struct. That is because of the extra step needed to get the 4918 * corresponding system structs. Other attributes have already been set or 4919 * verified by do_rfs4_set_attrs. 4920 * 4921 * Return 0 if all attrs match, -1 if some don't, error if error processing. 4922 */ 4923 static int 4924 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, 4925 bitmap4 *resp, struct nfs4_ntov_table *ntovp) 4926 { 4927 int error, ret_error = 0; 4928 int i, k; 4929 uint_t sva_mask = sargp->vap->va_mask; 4930 uint_t vbit; 4931 union nfs4_attr_u *na; 4932 uint8_t *amap; 4933 bool_t getsb = ntovp->vfsstat; 4934 4935 if (sva_mask != 0) { 4936 /* 4937 * Okay to overwrite sargp->vap because we verify based 4938 * on the incoming values. 4939 */ 4940 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, 4941 sargp->cs->cr, NULL); 4942 if (ret_error) { 4943 if (resp == NULL) 4944 return (ret_error); 4945 /* 4946 * Must return bitmap of successful attrs 4947 */ 4948 sva_mask = 0; /* to prevent checking vap later */ 4949 } else { 4950 /* 4951 * Some file systems clobber va_mask. it is probably 4952 * wrong of them to do so, nonethless we practice 4953 * defensive coding. 4954 * See bug id 4276830. 4955 */ 4956 sargp->vap->va_mask = sva_mask; 4957 } 4958 } 4959 4960 if (getsb) { 4961 /* 4962 * Now get the superblock and loop on the bitmap, as there is 4963 * no simple way of translating from superblock to bitmap4. 4964 */ 4965 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); 4966 if (ret_error) { 4967 if (resp == NULL) 4968 goto errout; 4969 getsb = FALSE; 4970 } 4971 } 4972 4973 /* 4974 * Now loop and verify each attribute which getattr returned 4975 * whether it's the same as the input. 4976 */ 4977 if (resp == NULL && !getsb && (sva_mask == 0)) 4978 goto errout; 4979 4980 na = ntovp->na; 4981 amap = ntovp->amap; 4982 k = 0; 4983 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { 4984 k = *amap; 4985 ASSERT(nfs4_ntov_map[k].nval == k); 4986 vbit = nfs4_ntov_map[k].vbit; 4987 4988 /* 4989 * If vattr attribute but VOP_GETATTR failed, or it's 4990 * superblock attribute but VFS_STATVFS failed, skip 4991 */ 4992 if (vbit) { 4993 if ((vbit & sva_mask) == 0) 4994 continue; 4995 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { 4996 continue; 4997 } 4998 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); 4999 if (resp != NULL) { 5000 if (error) 5001 ret_error = -1; /* not all match */ 5002 else /* update response bitmap */ 5003 *resp |= nfs4_ntov_map[k].fbit; 5004 continue; 5005 } 5006 if (error) { 5007 ret_error = -1; /* not all match */ 5008 break; 5009 } 5010 } 5011 errout: 5012 return (ret_error); 5013 } 5014 5015 /* 5016 * Decode the attribute to be set/verified. If the attr requires a sys op 5017 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't 5018 * call the sv_getit function for it, because the sys op hasn't yet been done. 5019 * Return 0 for success, error code if failed. 5020 * 5021 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. 5022 */ 5023 static int 5024 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, 5025 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) 5026 { 5027 int error = 0; 5028 bool_t set_later; 5029 5030 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; 5031 5032 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { 5033 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; 5034 /* 5035 * don't verify yet if a vattr or sb dependent attr, 5036 * because we don't have their sys values yet. 5037 * Will be done later. 5038 */ 5039 if (! (set_later && (cmd == NFS4ATTR_VERIT))) { 5040 /* 5041 * ACLs are a special case, since setting the MODE 5042 * conflicts with setting the ACL. We delay setting 5043 * the ACL until all other attributes have been set. 5044 * The ACL gets set in do_rfs4_op_setattr(). 5045 */ 5046 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { 5047 error = (*nfs4_ntov_map[k].sv_getit)(cmd, 5048 sargp, nap); 5049 if (error) { 5050 xdr_free(nfs4_ntov_map[k].xfunc, 5051 (caddr_t)nap); 5052 } 5053 } 5054 } 5055 } else { 5056 #ifdef DEBUG 5057 cmn_err(CE_NOTE, "decode_fattr4_attr: error " 5058 "decoding attribute %d\n", k); 5059 #endif 5060 error = EINVAL; 5061 } 5062 if (!error && resp_bval && !set_later) { 5063 *resp_bval |= nfs4_ntov_map[k].fbit; 5064 } 5065 5066 return (error); 5067 } 5068 5069 /* 5070 * Set vattr based on incoming fattr4 attrs - used by setattr. 5071 * Set response mask. Ignore any values that are not writable vattr attrs. 5072 */ 5073 static nfsstat4 5074 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5075 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, 5076 nfs4_attr_cmd_t cmd) 5077 { 5078 int error = 0; 5079 int i; 5080 char *attrs = fattrp->attrlist4; 5081 uint32_t attrslen = fattrp->attrlist4_len; 5082 XDR xdr; 5083 nfsstat4 status = NFS4_OK; 5084 vnode_t *vp = cs->vp; 5085 union nfs4_attr_u *na; 5086 uint8_t *amap; 5087 5088 #ifndef lint 5089 /* 5090 * Make sure that maximum attribute number can be expressed as an 5091 * 8 bit quantity. 5092 */ 5093 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); 5094 #endif 5095 5096 if (vp == NULL) { 5097 if (resp) 5098 *resp = 0; 5099 return (NFS4ERR_NOFILEHANDLE); 5100 } 5101 if (cs->access == CS_ACCESS_DENIED) { 5102 if (resp) 5103 *resp = 0; 5104 return (NFS4ERR_ACCESS); 5105 } 5106 5107 sargp->op = cmd; 5108 sargp->cs = cs; 5109 sargp->flag = 0; /* may be set later */ 5110 sargp->vap->va_mask = 0; 5111 sargp->rdattr_error = NFS4_OK; 5112 sargp->rdattr_error_req = FALSE; 5113 /* sargp->sbp is set by the caller */ 5114 5115 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); 5116 5117 na = ntovp->na; 5118 amap = ntovp->amap; 5119 5120 /* 5121 * The following loop iterates on the nfs4_ntov_map checking 5122 * if the fbit is set in the requested bitmap. 5123 * If set then we process the arguments using the 5124 * rfs4_fattr4 conversion functions to populate the setattr 5125 * vattr and va_mask. Any settable attrs that are not using vattr 5126 * will be set in this loop. 5127 */ 5128 for (i = 0; i < nfs4_ntov_map_size; i++) { 5129 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { 5130 continue; 5131 } 5132 /* 5133 * If setattr, must be a writable attr. 5134 * If verify/nverify, must be a readable attr. 5135 */ 5136 if ((error = (*nfs4_ntov_map[i].sv_getit)( 5137 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { 5138 /* 5139 * Client tries to set/verify an 5140 * unsupported attribute, tries to set 5141 * a read only attr or verify a write 5142 * only one - error! 5143 */ 5144 break; 5145 } 5146 /* 5147 * Decode the attribute to set/verify 5148 */ 5149 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, 5150 &xdr, resp ? resp : NULL, na); 5151 if (error) 5152 break; 5153 *amap++ = (uint8_t)nfs4_ntov_map[i].nval; 5154 na++; 5155 (ntovp->attrcnt)++; 5156 if (nfs4_ntov_map[i].vfsstat) 5157 ntovp->vfsstat = TRUE; 5158 } 5159 5160 if (error != 0) 5161 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : 5162 puterrno4(error)); 5163 /* xdrmem_destroy(&xdrs); */ /* NO-OP */ 5164 return (status); 5165 } 5166 5167 static nfsstat4 5168 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, 5169 stateid4 *stateid) 5170 { 5171 int error = 0; 5172 struct nfs4_svgetit_arg sarg; 5173 bool_t trunc; 5174 5175 nfsstat4 status = NFS4_OK; 5176 cred_t *cr = cs->cr; 5177 vnode_t *vp = cs->vp; 5178 struct nfs4_ntov_table ntov; 5179 struct statvfs64 sb; 5180 struct vattr bva; 5181 struct flock64 bf; 5182 int in_crit = 0; 5183 uint_t saved_mask = 0; 5184 caller_context_t ct; 5185 5186 *resp = 0; 5187 sarg.sbp = &sb; 5188 sarg.is_referral = B_FALSE; 5189 nfs4_ntov_table_init(&ntov); 5190 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, 5191 NFS4ATTR_SETIT); 5192 if (status != NFS4_OK) { 5193 /* 5194 * failed set attrs 5195 */ 5196 goto done; 5197 } 5198 if ((sarg.vap->va_mask == 0) && 5199 (! (fattrp->attrmask & FATTR4_ACL_MASK))) { 5200 /* 5201 * no further work to be done 5202 */ 5203 goto done; 5204 } 5205 5206 /* 5207 * If we got a request to set the ACL and the MODE, only 5208 * allow changing VSUID, VSGID, and VSVTX. Attempting 5209 * to change any other bits, along with setting an ACL, 5210 * gives NFS4ERR_INVAL. 5211 */ 5212 if ((fattrp->attrmask & FATTR4_ACL_MASK) && 5213 (fattrp->attrmask & FATTR4_MODE_MASK)) { 5214 vattr_t va; 5215 5216 va.va_mask = AT_MODE; 5217 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); 5218 if (error) { 5219 status = puterrno4(error); 5220 goto done; 5221 } 5222 if ((sarg.vap->va_mode ^ va.va_mode) & 5223 ~(VSUID | VSGID | VSVTX)) { 5224 status = NFS4ERR_INVAL; 5225 goto done; 5226 } 5227 } 5228 5229 /* Check stateid only if size has been set */ 5230 if (sarg.vap->va_mask & AT_SIZE) { 5231 trunc = (sarg.vap->va_size == 0); 5232 status = rfs4_check_stateid(FWRITE, cs->vp, stateid, 5233 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); 5234 if (status != NFS4_OK) 5235 goto done; 5236 } else { 5237 ct.cc_sysid = 0; 5238 ct.cc_pid = 0; 5239 ct.cc_caller_id = nfs4_srv_caller_id; 5240 ct.cc_flags = CC_DONTBLOCK; 5241 } 5242 5243 /* XXX start of possible race with delegations */ 5244 5245 /* 5246 * We need to specially handle size changes because it is 5247 * possible for the client to create a file with read-only 5248 * modes, but with the file opened for writing. If the client 5249 * then tries to set the file size, e.g. ftruncate(3C), 5250 * fcntl(F_FREESP), the normal access checking done in 5251 * VOP_SETATTR would prevent the client from doing it even though 5252 * it should be allowed to do so. To get around this, we do the 5253 * access checking for ourselves and use VOP_SPACE which doesn't 5254 * do the access checking. 5255 * Also the client should not be allowed to change the file 5256 * size if there is a conflicting non-blocking mandatory lock in 5257 * the region of the change. 5258 */ 5259 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { 5260 u_offset_t offset; 5261 ssize_t length; 5262 5263 /* 5264 * ufs_setattr clears AT_SIZE from vap->va_mask, but 5265 * before returning, sarg.vap->va_mask is used to 5266 * generate the setattr reply bitmap. We also clear 5267 * AT_SIZE below before calling VOP_SPACE. For both 5268 * of these cases, the va_mask needs to be saved here 5269 * and restored after calling VOP_SETATTR. 5270 */ 5271 saved_mask = sarg.vap->va_mask; 5272 5273 /* 5274 * Check any possible conflict due to NBMAND locks. 5275 * Get into critical region before VOP_GETATTR, so the 5276 * size attribute is valid when checking conflicts. 5277 */ 5278 if (nbl_need_check(vp)) { 5279 nbl_start_crit(vp, RW_READER); 5280 in_crit = 1; 5281 } 5282 5283 bva.va_mask = AT_UID|AT_SIZE; 5284 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { 5285 status = puterrno4(error); 5286 goto done; 5287 } 5288 5289 if (in_crit) { 5290 if (sarg.vap->va_size < bva.va_size) { 5291 offset = sarg.vap->va_size; 5292 length = bva.va_size - sarg.vap->va_size; 5293 } else { 5294 offset = bva.va_size; 5295 length = sarg.vap->va_size - bva.va_size; 5296 } 5297 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, 5298 &ct)) { 5299 status = NFS4ERR_LOCKED; 5300 goto done; 5301 } 5302 } 5303 5304 if (crgetuid(cr) == bva.va_uid) { 5305 sarg.vap->va_mask &= ~AT_SIZE; 5306 bf.l_type = F_WRLCK; 5307 bf.l_whence = 0; 5308 bf.l_start = (off64_t)sarg.vap->va_size; 5309 bf.l_len = 0; 5310 bf.l_sysid = 0; 5311 bf.l_pid = 0; 5312 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, 5313 (offset_t)sarg.vap->va_size, cr, &ct); 5314 } 5315 } 5316 5317 if (!error && sarg.vap->va_mask != 0) 5318 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); 5319 5320 /* restore va_mask -- ufs_setattr clears AT_SIZE */ 5321 if (saved_mask & AT_SIZE) 5322 sarg.vap->va_mask |= AT_SIZE; 5323 5324 /* 5325 * If an ACL was being set, it has been delayed until now, 5326 * in order to set the mode (via the VOP_SETATTR() above) first. 5327 */ 5328 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { 5329 int i; 5330 5331 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) 5332 if (ntov.amap[i] == FATTR4_ACL) 5333 break; 5334 if (i < NFS4_MAXNUM_ATTRS) { 5335 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( 5336 NFS4ATTR_SETIT, &sarg, &ntov.na[i]); 5337 if (error == 0) { 5338 *resp |= FATTR4_ACL_MASK; 5339 } else if (error == ENOTSUP) { 5340 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5341 status = NFS4ERR_ATTRNOTSUPP; 5342 goto done; 5343 } 5344 } else { 5345 NFS4_DEBUG(rfs4_debug, 5346 (CE_NOTE, "do_rfs4_op_setattr: " 5347 "unable to find ACL in fattr4")); 5348 error = EINVAL; 5349 } 5350 } 5351 5352 if (error) { 5353 /* check if a monitor detected a delegation conflict */ 5354 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 5355 status = NFS4ERR_DELAY; 5356 else 5357 status = puterrno4(error); 5358 5359 /* 5360 * Set the response bitmap when setattr failed. 5361 * If VOP_SETATTR partially succeeded, test by doing a 5362 * VOP_GETATTR on the object and comparing the data 5363 * to the setattr arguments. 5364 */ 5365 (void) rfs4_verify_attr(&sarg, resp, &ntov); 5366 } else { 5367 /* 5368 * Force modified metadata out to stable storage. 5369 */ 5370 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); 5371 /* 5372 * Set response bitmap 5373 */ 5374 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); 5375 } 5376 5377 /* Return early and already have a NFSv4 error */ 5378 done: 5379 /* 5380 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr 5381 * conversion sets both readable and writeable NFS4 attrs 5382 * for AT_MTIME and AT_ATIME. The line below masks out 5383 * unrequested attrs from the setattr result bitmap. This 5384 * is placed after the done: label to catch the ATTRNOTSUP 5385 * case. 5386 */ 5387 *resp &= fattrp->attrmask; 5388 5389 if (in_crit) 5390 nbl_end_crit(vp); 5391 5392 nfs4_ntov_table_free(&ntov, &sarg); 5393 5394 return (status); 5395 } 5396 5397 /* ARGSUSED */ 5398 static void 5399 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5400 struct compound_state *cs) 5401 { 5402 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; 5403 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; 5404 bslabel_t *clabel; 5405 5406 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, 5407 SETATTR4args *, args); 5408 5409 if (cs->vp == NULL) { 5410 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5411 goto out; 5412 } 5413 5414 /* 5415 * If there is an unshared filesystem mounted on this vnode, 5416 * do not allow to setattr on this vnode. 5417 */ 5418 if (vn_ismntpt(cs->vp)) { 5419 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5420 goto out; 5421 } 5422 5423 resp->attrsset = 0; 5424 5425 if (rdonly4(req, cs)) { 5426 *cs->statusp = resp->status = NFS4ERR_ROFS; 5427 goto out; 5428 } 5429 5430 /* check label before setting attributes */ 5431 if (is_system_labeled()) { 5432 ASSERT(req->rq_label != NULL); 5433 clabel = req->rq_label; 5434 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, 5435 "got client label from request(1)", 5436 struct svc_req *, req); 5437 if (!blequal(&l_admin_low->tsl_label, clabel)) { 5438 if (!do_rfs_label_check(clabel, cs->vp, 5439 EQUALITY_CHECK, cs->exi)) { 5440 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5441 goto out; 5442 } 5443 } 5444 } 5445 5446 *cs->statusp = resp->status = 5447 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, 5448 &args->stateid); 5449 5450 out: 5451 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, 5452 SETATTR4res *, resp); 5453 } 5454 5455 /* ARGSUSED */ 5456 static void 5457 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5458 struct compound_state *cs) 5459 { 5460 /* 5461 * verify and nverify are exactly the same, except that nverify 5462 * succeeds when some argument changed, and verify succeeds when 5463 * when none changed. 5464 */ 5465 5466 VERIFY4args *args = &argop->nfs_argop4_u.opverify; 5467 VERIFY4res *resp = &resop->nfs_resop4_u.opverify; 5468 5469 int error; 5470 struct nfs4_svgetit_arg sarg; 5471 struct statvfs64 sb; 5472 struct nfs4_ntov_table ntov; 5473 5474 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, 5475 VERIFY4args *, args); 5476 5477 if (cs->vp == NULL) { 5478 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5479 goto out; 5480 } 5481 5482 sarg.sbp = &sb; 5483 sarg.is_referral = B_FALSE; 5484 nfs4_ntov_table_init(&ntov); 5485 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5486 &sarg, &ntov, NFS4ATTR_VERIT); 5487 if (resp->status != NFS4_OK) { 5488 /* 5489 * do_rfs4_set_attrs will try to verify systemwide attrs, 5490 * so could return -1 for "no match". 5491 */ 5492 if (resp->status == -1) 5493 resp->status = NFS4ERR_NOT_SAME; 5494 goto done; 5495 } 5496 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5497 switch (error) { 5498 case 0: 5499 resp->status = NFS4_OK; 5500 break; 5501 case -1: 5502 resp->status = NFS4ERR_NOT_SAME; 5503 break; 5504 default: 5505 resp->status = puterrno4(error); 5506 break; 5507 } 5508 done: 5509 *cs->statusp = resp->status; 5510 nfs4_ntov_table_free(&ntov, &sarg); 5511 out: 5512 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, 5513 VERIFY4res *, resp); 5514 } 5515 5516 /* ARGSUSED */ 5517 static void 5518 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5519 struct compound_state *cs) 5520 { 5521 /* 5522 * verify and nverify are exactly the same, except that nverify 5523 * succeeds when some argument changed, and verify succeeds when 5524 * when none changed. 5525 */ 5526 5527 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; 5528 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; 5529 5530 int error; 5531 struct nfs4_svgetit_arg sarg; 5532 struct statvfs64 sb; 5533 struct nfs4_ntov_table ntov; 5534 5535 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, 5536 NVERIFY4args *, args); 5537 5538 if (cs->vp == NULL) { 5539 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5540 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5541 NVERIFY4res *, resp); 5542 return; 5543 } 5544 sarg.sbp = &sb; 5545 sarg.is_referral = B_FALSE; 5546 nfs4_ntov_table_init(&ntov); 5547 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, 5548 &sarg, &ntov, NFS4ATTR_VERIT); 5549 if (resp->status != NFS4_OK) { 5550 /* 5551 * do_rfs4_set_attrs will try to verify systemwide attrs, 5552 * so could return -1 for "no match". 5553 */ 5554 if (resp->status == -1) 5555 resp->status = NFS4_OK; 5556 goto done; 5557 } 5558 error = rfs4_verify_attr(&sarg, NULL, &ntov); 5559 switch (error) { 5560 case 0: 5561 resp->status = NFS4ERR_SAME; 5562 break; 5563 case -1: 5564 resp->status = NFS4_OK; 5565 break; 5566 default: 5567 resp->status = puterrno4(error); 5568 break; 5569 } 5570 done: 5571 *cs->statusp = resp->status; 5572 nfs4_ntov_table_free(&ntov, &sarg); 5573 5574 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, 5575 NVERIFY4res *, resp); 5576 } 5577 5578 /* 5579 * XXX - This should live in an NFS header file. 5580 */ 5581 #define MAX_IOVECS 12 5582 5583 /* ARGSUSED */ 5584 static void 5585 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, 5586 struct compound_state *cs) 5587 { 5588 WRITE4args *args = &argop->nfs_argop4_u.opwrite; 5589 WRITE4res *resp = &resop->nfs_resop4_u.opwrite; 5590 int error; 5591 vnode_t *vp; 5592 struct vattr bva; 5593 u_offset_t rlimit; 5594 struct uio uio; 5595 struct iovec iov[MAX_IOVECS]; 5596 struct iovec *iovp; 5597 int iovcnt; 5598 int ioflag; 5599 cred_t *savecred, *cr; 5600 bool_t *deleg = &cs->deleg; 5601 nfsstat4 stat; 5602 int in_crit = 0; 5603 caller_context_t ct; 5604 5605 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, 5606 WRITE4args *, args); 5607 5608 vp = cs->vp; 5609 if (vp == NULL) { 5610 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 5611 goto out; 5612 } 5613 if (cs->access == CS_ACCESS_DENIED) { 5614 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5615 goto out; 5616 } 5617 5618 cr = cs->cr; 5619 5620 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, 5621 deleg, TRUE, &ct)) != NFS4_OK) { 5622 *cs->statusp = resp->status = stat; 5623 goto out; 5624 } 5625 5626 /* 5627 * We have to enter the critical region before calling VOP_RWLOCK 5628 * to avoid a deadlock with ufs. 5629 */ 5630 if (nbl_need_check(vp)) { 5631 nbl_start_crit(vp, RW_READER); 5632 in_crit = 1; 5633 if (nbl_conflict(vp, NBL_WRITE, 5634 args->offset, args->data_len, 0, &ct)) { 5635 *cs->statusp = resp->status = NFS4ERR_LOCKED; 5636 goto out; 5637 } 5638 } 5639 5640 bva.va_mask = AT_MODE | AT_UID; 5641 error = VOP_GETATTR(vp, &bva, 0, cr, &ct); 5642 5643 /* 5644 * If we can't get the attributes, then we can't do the 5645 * right access checking. So, we'll fail the request. 5646 */ 5647 if (error) { 5648 *cs->statusp = resp->status = puterrno4(error); 5649 goto out; 5650 } 5651 5652 if (rdonly4(req, cs)) { 5653 *cs->statusp = resp->status = NFS4ERR_ROFS; 5654 goto out; 5655 } 5656 5657 if (vp->v_type != VREG) { 5658 *cs->statusp = resp->status = 5659 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); 5660 goto out; 5661 } 5662 5663 if (crgetuid(cr) != bva.va_uid && 5664 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { 5665 *cs->statusp = resp->status = puterrno4(error); 5666 goto out; 5667 } 5668 5669 if (MANDLOCK(vp, bva.va_mode)) { 5670 *cs->statusp = resp->status = NFS4ERR_ACCESS; 5671 goto out; 5672 } 5673 5674 if (args->data_len == 0) { 5675 *cs->statusp = resp->status = NFS4_OK; 5676 resp->count = 0; 5677 resp->committed = args->stable; 5678 resp->writeverf = Write4verf; 5679 goto out; 5680 } 5681 5682 if (args->mblk != NULL) { 5683 mblk_t *m; 5684 uint_t bytes, round_len; 5685 5686 iovcnt = 0; 5687 bytes = 0; 5688 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); 5689 for (m = args->mblk; 5690 m != NULL && bytes < round_len; 5691 m = m->b_cont) { 5692 iovcnt++; 5693 bytes += MBLKL(m); 5694 } 5695 #ifdef DEBUG 5696 /* should have ended on an mblk boundary */ 5697 if (bytes != round_len) { 5698 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", 5699 bytes, round_len, args->data_len); 5700 printf("args=%p, args->mblk=%p, m=%p", (void *)args, 5701 (void *)args->mblk, (void *)m); 5702 ASSERT(bytes == round_len); 5703 } 5704 #endif 5705 if (iovcnt <= MAX_IOVECS) { 5706 iovp = iov; 5707 } else { 5708 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); 5709 } 5710 mblk_to_iov(args->mblk, iovcnt, iovp); 5711 } else if (args->rlist != NULL) { 5712 iovcnt = 1; 5713 iovp = iov; 5714 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); 5715 iovp->iov_len = args->data_len; 5716 } else { 5717 iovcnt = 1; 5718 iovp = iov; 5719 iovp->iov_base = args->data_val; 5720 iovp->iov_len = args->data_len; 5721 } 5722 5723 uio.uio_iov = iovp; 5724 uio.uio_iovcnt = iovcnt; 5725 5726 uio.uio_segflg = UIO_SYSSPACE; 5727 uio.uio_extflg = UIO_COPY_DEFAULT; 5728 uio.uio_loffset = args->offset; 5729 uio.uio_resid = args->data_len; 5730 uio.uio_llimit = curproc->p_fsz_ctl; 5731 rlimit = uio.uio_llimit - args->offset; 5732 if (rlimit < (u_offset_t)uio.uio_resid) 5733 uio.uio_resid = (int)rlimit; 5734 5735 if (args->stable == UNSTABLE4) 5736 ioflag = 0; 5737 else if (args->stable == FILE_SYNC4) 5738 ioflag = FSYNC; 5739 else if (args->stable == DATA_SYNC4) 5740 ioflag = FDSYNC; 5741 else { 5742 if (iovp != iov) 5743 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5744 *cs->statusp = resp->status = NFS4ERR_INVAL; 5745 goto out; 5746 } 5747 5748 /* 5749 * We're changing creds because VM may fault and we need 5750 * the cred of the current thread to be used if quota 5751 * checking is enabled. 5752 */ 5753 savecred = curthread->t_cred; 5754 curthread->t_cred = cr; 5755 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); 5756 curthread->t_cred = savecred; 5757 5758 if (iovp != iov) 5759 kmem_free(iovp, sizeof (*iovp) * iovcnt); 5760 5761 if (error) { 5762 *cs->statusp = resp->status = puterrno4(error); 5763 goto out; 5764 } 5765 5766 *cs->statusp = resp->status = NFS4_OK; 5767 resp->count = args->data_len - uio.uio_resid; 5768 5769 if (ioflag == 0) 5770 resp->committed = UNSTABLE4; 5771 else 5772 resp->committed = FILE_SYNC4; 5773 5774 resp->writeverf = Write4verf; 5775 5776 out: 5777 if (in_crit) 5778 nbl_end_crit(vp); 5779 5780 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, 5781 WRITE4res *, resp); 5782 } 5783 5784 5785 /* XXX put in a header file */ 5786 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); 5787 5788 void 5789 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, 5790 struct svc_req *req, cred_t *cr, int *rv) 5791 { 5792 uint_t i; 5793 struct compound_state cs; 5794 5795 if (rv != NULL) 5796 *rv = 0; 5797 rfs4_init_compound_state(&cs); 5798 /* 5799 * Form a reply tag by copying over the reqeuest tag. 5800 */ 5801 resp->tag.utf8string_val = 5802 kmem_alloc(args->tag.utf8string_len, KM_SLEEP); 5803 resp->tag.utf8string_len = args->tag.utf8string_len; 5804 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, 5805 resp->tag.utf8string_len); 5806 5807 cs.statusp = &resp->status; 5808 cs.req = req; 5809 resp->array = NULL; 5810 resp->array_len = 0; 5811 5812 /* 5813 * XXX for now, minorversion should be zero 5814 */ 5815 if (args->minorversion != NFS4_MINORVERSION) { 5816 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5817 &cs, COMPOUND4args *, args); 5818 resp->status = NFS4ERR_MINOR_VERS_MISMATCH; 5819 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5820 &cs, COMPOUND4res *, resp); 5821 return; 5822 } 5823 5824 if (args->array_len == 0) { 5825 resp->status = NFS4_OK; 5826 return; 5827 } 5828 5829 ASSERT(exi == NULL); 5830 ASSERT(cr == NULL); 5831 5832 cr = crget(); 5833 ASSERT(cr != NULL); 5834 5835 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { 5836 DTRACE_NFSV4_2(compound__start, struct compound_state *, 5837 &cs, COMPOUND4args *, args); 5838 crfree(cr); 5839 DTRACE_NFSV4_2(compound__done, struct compound_state *, 5840 &cs, COMPOUND4res *, resp); 5841 svcerr_badcred(req->rq_xprt); 5842 if (rv != NULL) 5843 *rv = 1; 5844 return; 5845 } 5846 resp->array_len = args->array_len; 5847 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), 5848 KM_SLEEP); 5849 5850 cs.basecr = cr; 5851 5852 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, 5853 COMPOUND4args *, args); 5854 5855 /* 5856 * For now, NFS4 compound processing must be protected by 5857 * exported_lock because it can access more than one exportinfo 5858 * per compound and share/unshare can now change multiple 5859 * exinfo structs. The NFS2/3 code only refs 1 exportinfo 5860 * per proc (excluding public exinfo), and exi_count design 5861 * is sufficient to protect concurrent execution of NFS2/3 5862 * ops along with unexport. This lock will be removed as 5863 * part of the NFSv4 phase 2 namespace redesign work. 5864 */ 5865 rw_enter(&exported_lock, RW_READER); 5866 5867 /* 5868 * If this is the first compound we've seen, we need to start all 5869 * new instances' grace periods. 5870 */ 5871 if (rfs4_seen_first_compound == 0) { 5872 rfs4_grace_start_new(); 5873 /* 5874 * This must be set after rfs4_grace_start_new(), otherwise 5875 * another thread could proceed past here before the former 5876 * is finished. 5877 */ 5878 rfs4_seen_first_compound = 1; 5879 } 5880 5881 for (i = 0; i < args->array_len && cs.cont; i++) { 5882 nfs_argop4 *argop; 5883 nfs_resop4 *resop; 5884 uint_t op; 5885 5886 argop = &args->array[i]; 5887 resop = &resp->array[i]; 5888 resop->resop = argop->argop; 5889 op = (uint_t)resop->resop; 5890 5891 if (op < rfsv4disp_cnt) { 5892 kstat_t *ksp = rfsprocio_v4_ptr[op]; 5893 kstat_t *exi_ksp = NULL; 5894 5895 /* 5896 * Count the individual ops here; NULL and COMPOUND 5897 * are counted in common_dispatch() 5898 */ 5899 rfsproccnt_v4_ptr[op].value.ui64++; 5900 5901 if (ksp != NULL) { 5902 mutex_enter(ksp->ks_lock); 5903 kstat_runq_enter(KSTAT_IO_PTR(ksp)); 5904 mutex_exit(ksp->ks_lock); 5905 } 5906 5907 switch (rfsv4disptab[op].op_type) { 5908 case NFS4_OP_CFH: 5909 resop->exi = cs.exi; 5910 break; 5911 case NFS4_OP_SFH: 5912 resop->exi = cs.saved_exi; 5913 break; 5914 default: 5915 ASSERT(resop->exi == NULL); 5916 break; 5917 } 5918 5919 if (resop->exi != NULL) { 5920 exi_ksp = resop->exi->exi_kstats-> 5921 rfsprocio_v4_ptr[op]; 5922 if (exi_ksp != NULL) { 5923 mutex_enter(exi_ksp->ks_lock); 5924 kstat_runq_enter(KSTAT_IO_PTR(exi_ksp)); 5925 mutex_exit(exi_ksp->ks_lock); 5926 } 5927 } 5928 5929 NFS4_DEBUG(rfs4_debug > 1, 5930 (CE_NOTE, "Executing %s", rfs4_op_string[op])); 5931 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); 5932 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", 5933 rfs4_op_string[op], *cs.statusp)); 5934 if (*cs.statusp != NFS4_OK) 5935 cs.cont = FALSE; 5936 5937 if (rfsv4disptab[op].op_type == NFS4_OP_POSTCFH && 5938 *cs.statusp == NFS4_OK && 5939 (resop->exi = cs.exi) != NULL) { 5940 exi_ksp = resop->exi->exi_kstats-> 5941 rfsprocio_v4_ptr[op]; 5942 } 5943 5944 if (exi_ksp != NULL) { 5945 mutex_enter(exi_ksp->ks_lock); 5946 KSTAT_IO_PTR(exi_ksp)->nwritten += 5947 argop->opsize; 5948 KSTAT_IO_PTR(exi_ksp)->writes++; 5949 if (rfsv4disptab[op].op_type != NFS4_OP_POSTCFH) 5950 kstat_runq_exit(KSTAT_IO_PTR(exi_ksp)); 5951 mutex_exit(exi_ksp->ks_lock); 5952 5953 exi_hold(resop->exi); 5954 } else { 5955 resop->exi = NULL; 5956 } 5957 5958 if (ksp != NULL) { 5959 mutex_enter(ksp->ks_lock); 5960 kstat_runq_exit(KSTAT_IO_PTR(ksp)); 5961 mutex_exit(ksp->ks_lock); 5962 } 5963 } else { 5964 /* 5965 * This is effectively dead code since XDR code 5966 * will have already returned BADXDR if op doesn't 5967 * decode to legal value. This only done for a 5968 * day when XDR code doesn't verify v4 opcodes. 5969 */ 5970 op = OP_ILLEGAL; 5971 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; 5972 5973 rfs4_op_illegal(argop, resop, req, &cs); 5974 cs.cont = FALSE; 5975 } 5976 5977 /* 5978 * If not at last op, and if we are to stop, then 5979 * compact the results array. 5980 */ 5981 if ((i + 1) < args->array_len && !cs.cont) { 5982 nfs_resop4 *new_res = kmem_alloc( 5983 (i + 1) * sizeof (nfs_resop4), KM_SLEEP); 5984 bcopy(resp->array, 5985 new_res, (i + 1) * sizeof (nfs_resop4)); 5986 kmem_free(resp->array, 5987 args->array_len * sizeof (nfs_resop4)); 5988 5989 resp->array_len = i + 1; 5990 resp->array = new_res; 5991 } 5992 } 5993 5994 rw_exit(&exported_lock); 5995 5996 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, 5997 COMPOUND4res *, resp); 5998 5999 if (cs.vp) 6000 VN_RELE(cs.vp); 6001 if (cs.saved_vp) 6002 VN_RELE(cs.saved_vp); 6003 if (cs.saved_fh.nfs_fh4_val) 6004 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); 6005 6006 if (cs.basecr) 6007 crfree(cs.basecr); 6008 if (cs.cr) 6009 crfree(cs.cr); 6010 /* 6011 * done with this compound request, free the label 6012 */ 6013 6014 if (req->rq_label != NULL) { 6015 kmem_free(req->rq_label, sizeof (bslabel_t)); 6016 req->rq_label = NULL; 6017 } 6018 } 6019 6020 /* 6021 * XXX because of what appears to be duplicate calls to rfs4_compound_free 6022 * XXX zero out the tag and array values. Need to investigate why the 6023 * XXX calls occur, but at least prevent the panic for now. 6024 */ 6025 void 6026 rfs4_compound_free(COMPOUND4res *resp) 6027 { 6028 uint_t i; 6029 6030 if (resp->tag.utf8string_val) { 6031 UTF8STRING_FREE(resp->tag) 6032 } 6033 6034 for (i = 0; i < resp->array_len; i++) { 6035 nfs_resop4 *resop; 6036 uint_t op; 6037 6038 resop = &resp->array[i]; 6039 op = (uint_t)resop->resop; 6040 if (op < rfsv4disp_cnt) { 6041 (*rfsv4disptab[op].dis_resfree)(resop); 6042 } 6043 } 6044 if (resp->array != NULL) { 6045 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); 6046 } 6047 } 6048 6049 /* 6050 * Process the value of the compound request rpc flags, as a bit-AND 6051 * of the individual per-op flags (idempotent, allowork, publicfh_ok) 6052 */ 6053 void 6054 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) 6055 { 6056 int i; 6057 int flag = RPC_ALL; 6058 6059 for (i = 0; flag && i < args->array_len; i++) { 6060 uint_t op; 6061 6062 op = (uint_t)args->array[i].argop; 6063 6064 if (op < rfsv4disp_cnt) 6065 flag &= rfsv4disptab[op].dis_flags; 6066 else 6067 flag = 0; 6068 } 6069 *flagp = flag; 6070 } 6071 6072 void 6073 rfs4_compound_kstat_args(COMPOUND4args *args) 6074 { 6075 int i; 6076 6077 for (i = 0; i < args->array_len; i++) { 6078 uint_t op = (uint_t)args->array[i].argop; 6079 6080 if (op < rfsv4disp_cnt) { 6081 kstat_t *ksp = rfsprocio_v4_ptr[op]; 6082 6083 if (ksp != NULL) { 6084 mutex_enter(ksp->ks_lock); 6085 KSTAT_IO_PTR(ksp)->nwritten += 6086 args->array[i].opsize; 6087 KSTAT_IO_PTR(ksp)->writes++; 6088 mutex_exit(ksp->ks_lock); 6089 } 6090 } 6091 } 6092 } 6093 6094 void 6095 rfs4_compound_kstat_res(COMPOUND4res *res) 6096 { 6097 int i; 6098 6099 for (i = 0; i < res->array_len; i++) { 6100 uint_t op = (uint_t)res->array[i].resop; 6101 6102 if (op < rfsv4disp_cnt) { 6103 kstat_t *ksp = rfsprocio_v4_ptr[op]; 6104 struct exportinfo *exi = res->array[i].exi; 6105 6106 if (ksp != NULL) { 6107 mutex_enter(ksp->ks_lock); 6108 KSTAT_IO_PTR(ksp)->nread += 6109 res->array[i].opsize; 6110 KSTAT_IO_PTR(ksp)->reads++; 6111 mutex_exit(ksp->ks_lock); 6112 } 6113 6114 if (exi != NULL) { 6115 kstat_t *exi_ksp; 6116 6117 rw_enter(&exported_lock, RW_READER); 6118 6119 exi_ksp = exi->exi_kstats->rfsprocio_v4_ptr[op]; 6120 if (exi_ksp != NULL) { 6121 mutex_enter(exi_ksp->ks_lock); 6122 KSTAT_IO_PTR(exi_ksp)->nread += 6123 res->array[i].opsize; 6124 KSTAT_IO_PTR(exi_ksp)->reads++; 6125 mutex_exit(exi_ksp->ks_lock); 6126 } 6127 6128 rw_exit(&exported_lock); 6129 6130 exi_rele(exi); 6131 } 6132 } 6133 } 6134 } 6135 6136 nfsstat4 6137 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) 6138 { 6139 nfsstat4 e; 6140 6141 rfs4_dbe_lock(cp->rc_dbe); 6142 6143 if (cp->rc_sysidt != LM_NOSYSID) { 6144 *sp = cp->rc_sysidt; 6145 e = NFS4_OK; 6146 6147 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { 6148 *sp = cp->rc_sysidt; 6149 e = NFS4_OK; 6150 6151 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 6152 "rfs4_client_sysid: allocated 0x%x\n", *sp)); 6153 } else 6154 e = NFS4ERR_DELAY; 6155 6156 rfs4_dbe_unlock(cp->rc_dbe); 6157 return (e); 6158 } 6159 6160 #if defined(DEBUG) && ! defined(lint) 6161 static void lock_print(char *str, int operation, struct flock64 *flk) 6162 { 6163 char *op, *type; 6164 6165 switch (operation) { 6166 case F_GETLK: op = "F_GETLK"; 6167 break; 6168 case F_SETLK: op = "F_SETLK"; 6169 break; 6170 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; 6171 break; 6172 default: op = "F_UNKNOWN"; 6173 break; 6174 } 6175 switch (flk->l_type) { 6176 case F_UNLCK: type = "F_UNLCK"; 6177 break; 6178 case F_RDLCK: type = "F_RDLCK"; 6179 break; 6180 case F_WRLCK: type = "F_WRLCK"; 6181 break; 6182 default: type = "F_UNKNOWN"; 6183 break; 6184 } 6185 6186 ASSERT(flk->l_whence == 0); 6187 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", 6188 str, op, type, (longlong_t)flk->l_start, 6189 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); 6190 } 6191 6192 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) 6193 #else 6194 #define LOCK_PRINT(d, s, t, f) 6195 #endif 6196 6197 /*ARGSUSED*/ 6198 static bool_t 6199 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) 6200 { 6201 return (TRUE); 6202 } 6203 6204 /* 6205 * Look up the pathname using the vp in cs as the directory vnode. 6206 * cs->vp will be the vnode for the file on success 6207 */ 6208 6209 static nfsstat4 6210 rfs4_lookup(component4 *component, struct svc_req *req, 6211 struct compound_state *cs) 6212 { 6213 char *nm; 6214 uint32_t len; 6215 nfsstat4 status; 6216 struct sockaddr *ca; 6217 char *name; 6218 6219 if (cs->vp == NULL) { 6220 return (NFS4ERR_NOFILEHANDLE); 6221 } 6222 if (cs->vp->v_type != VDIR) { 6223 return (NFS4ERR_NOTDIR); 6224 } 6225 6226 status = utf8_dir_verify(component); 6227 if (status != NFS4_OK) 6228 return (status); 6229 6230 nm = utf8_to_fn(component, &len, NULL); 6231 if (nm == NULL) { 6232 return (NFS4ERR_INVAL); 6233 } 6234 6235 if (len > MAXNAMELEN) { 6236 kmem_free(nm, len); 6237 return (NFS4ERR_NAMETOOLONG); 6238 } 6239 6240 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6241 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6242 MAXPATHLEN + 1); 6243 6244 if (name == NULL) { 6245 kmem_free(nm, len); 6246 return (NFS4ERR_INVAL); 6247 } 6248 6249 status = do_rfs4_op_lookup(name, req, cs); 6250 6251 if (name != nm) 6252 kmem_free(name, MAXPATHLEN + 1); 6253 6254 kmem_free(nm, len); 6255 6256 return (status); 6257 } 6258 6259 static nfsstat4 6260 rfs4_lookupfile(component4 *component, struct svc_req *req, 6261 struct compound_state *cs, uint32_t access, change_info4 *cinfo) 6262 { 6263 nfsstat4 status; 6264 vnode_t *dvp = cs->vp; 6265 vattr_t bva, ava, fva; 6266 int error; 6267 6268 /* Get "before" change value */ 6269 bva.va_mask = AT_CTIME|AT_SEQ; 6270 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6271 if (error) 6272 return (puterrno4(error)); 6273 6274 /* rfs4_lookup may VN_RELE directory */ 6275 VN_HOLD(dvp); 6276 6277 status = rfs4_lookup(component, req, cs); 6278 if (status != NFS4_OK) { 6279 VN_RELE(dvp); 6280 return (status); 6281 } 6282 6283 /* 6284 * Get "after" change value, if it fails, simply return the 6285 * before value. 6286 */ 6287 ava.va_mask = AT_CTIME|AT_SEQ; 6288 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6289 ava.va_ctime = bva.va_ctime; 6290 ava.va_seq = 0; 6291 } 6292 VN_RELE(dvp); 6293 6294 /* 6295 * Validate the file is a file 6296 */ 6297 fva.va_mask = AT_TYPE|AT_MODE; 6298 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); 6299 if (error) 6300 return (puterrno4(error)); 6301 6302 if (fva.va_type != VREG) { 6303 if (fva.va_type == VDIR) 6304 return (NFS4ERR_ISDIR); 6305 if (fva.va_type == VLNK) 6306 return (NFS4ERR_SYMLINK); 6307 return (NFS4ERR_INVAL); 6308 } 6309 6310 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); 6311 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6312 6313 /* 6314 * It is undefined if VOP_LOOKUP will change va_seq, so 6315 * cinfo.atomic = TRUE only if we have 6316 * non-zero va_seq's, and they have not changed. 6317 */ 6318 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) 6319 cinfo->atomic = TRUE; 6320 else 6321 cinfo->atomic = FALSE; 6322 6323 /* Check for mandatory locking */ 6324 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); 6325 return (check_open_access(access, cs, req)); 6326 } 6327 6328 static nfsstat4 6329 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, 6330 timespec32_t *mtime, cred_t *cr, vnode_t **vpp, bool_t *created) 6331 { 6332 int error; 6333 nfsstat4 status = NFS4_OK; 6334 vattr_t va; 6335 6336 tryagain: 6337 6338 /* 6339 * The file open mode used is VWRITE. If the client needs 6340 * some other semantic, then it should do the access checking 6341 * itself. It would have been nice to have the file open mode 6342 * passed as part of the arguments. 6343 */ 6344 6345 *created = TRUE; 6346 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); 6347 6348 if (error) { 6349 *created = FALSE; 6350 6351 /* 6352 * If we got something other than file already exists 6353 * then just return this error. Otherwise, we got 6354 * EEXIST. If we were doing a GUARDED create, then 6355 * just return this error. Otherwise, we need to 6356 * make sure that this wasn't a duplicate of an 6357 * exclusive create request. 6358 * 6359 * The assumption is made that a non-exclusive create 6360 * request will never return EEXIST. 6361 */ 6362 6363 if (error != EEXIST || mode == GUARDED4) { 6364 status = puterrno4(error); 6365 return (status); 6366 } 6367 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, 6368 NULL, NULL, NULL); 6369 6370 if (error) { 6371 /* 6372 * We couldn't find the file that we thought that 6373 * we just created. So, we'll just try creating 6374 * it again. 6375 */ 6376 if (error == ENOENT) 6377 goto tryagain; 6378 6379 status = puterrno4(error); 6380 return (status); 6381 } 6382 6383 if (mode == UNCHECKED4) { 6384 /* existing object must be regular file */ 6385 if ((*vpp)->v_type != VREG) { 6386 if ((*vpp)->v_type == VDIR) 6387 status = NFS4ERR_ISDIR; 6388 else if ((*vpp)->v_type == VLNK) 6389 status = NFS4ERR_SYMLINK; 6390 else 6391 status = NFS4ERR_INVAL; 6392 VN_RELE(*vpp); 6393 return (status); 6394 } 6395 6396 return (NFS4_OK); 6397 } 6398 6399 /* Check for duplicate request */ 6400 ASSERT(mtime != 0); 6401 va.va_mask = AT_MTIME; 6402 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); 6403 if (!error) { 6404 /* We found the file */ 6405 if (va.va_mtime.tv_sec != mtime->tv_sec || 6406 va.va_mtime.tv_nsec != mtime->tv_nsec) { 6407 /* but its not our creation */ 6408 VN_RELE(*vpp); 6409 return (NFS4ERR_EXIST); 6410 } 6411 *created = TRUE; /* retrans of create == created */ 6412 return (NFS4_OK); 6413 } 6414 VN_RELE(*vpp); 6415 return (NFS4ERR_EXIST); 6416 } 6417 6418 return (NFS4_OK); 6419 } 6420 6421 static nfsstat4 6422 check_open_access(uint32_t access, struct compound_state *cs, 6423 struct svc_req *req) 6424 { 6425 int error; 6426 vnode_t *vp; 6427 bool_t readonly; 6428 cred_t *cr = cs->cr; 6429 6430 /* For now we don't allow mandatory locking as per V2/V3 */ 6431 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { 6432 return (NFS4ERR_ACCESS); 6433 } 6434 6435 vp = cs->vp; 6436 ASSERT(cr != NULL && vp->v_type == VREG); 6437 6438 /* 6439 * If the file system is exported read only and we are trying 6440 * to open for write, then return NFS4ERR_ROFS 6441 */ 6442 6443 readonly = rdonly4(req, cs); 6444 6445 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) 6446 return (NFS4ERR_ROFS); 6447 6448 if (access & OPEN4_SHARE_ACCESS_READ) { 6449 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && 6450 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { 6451 return (NFS4ERR_ACCESS); 6452 } 6453 } 6454 6455 if (access & OPEN4_SHARE_ACCESS_WRITE) { 6456 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); 6457 if (error) 6458 return (NFS4ERR_ACCESS); 6459 } 6460 6461 return (NFS4_OK); 6462 } 6463 6464 static nfsstat4 6465 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, 6466 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) 6467 { 6468 struct nfs4_svgetit_arg sarg; 6469 struct nfs4_ntov_table ntov; 6470 6471 bool_t ntov_table_init = FALSE; 6472 struct statvfs64 sb; 6473 nfsstat4 status; 6474 vnode_t *vp; 6475 vattr_t bva, ava, iva, cva, *vap; 6476 vnode_t *dvp; 6477 timespec32_t *mtime; 6478 char *nm = NULL; 6479 uint_t buflen; 6480 bool_t created; 6481 bool_t setsize = FALSE; 6482 len_t reqsize; 6483 int error; 6484 bool_t trunc; 6485 caller_context_t ct; 6486 component4 *component; 6487 bslabel_t *clabel; 6488 struct sockaddr *ca; 6489 char *name = NULL; 6490 6491 sarg.sbp = &sb; 6492 sarg.is_referral = B_FALSE; 6493 6494 dvp = cs->vp; 6495 6496 /* Check if the file system is read only */ 6497 if (rdonly4(req, cs)) 6498 return (NFS4ERR_ROFS); 6499 6500 /* check the label of including directory */ 6501 if (is_system_labeled()) { 6502 ASSERT(req->rq_label != NULL); 6503 clabel = req->rq_label; 6504 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, 6505 "got client label from request(1)", 6506 struct svc_req *, req); 6507 if (!blequal(&l_admin_low->tsl_label, clabel)) { 6508 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, 6509 cs->exi)) { 6510 return (NFS4ERR_ACCESS); 6511 } 6512 } 6513 } 6514 6515 /* 6516 * Get the last component of path name in nm. cs will reference 6517 * the including directory on success. 6518 */ 6519 component = &args->open_claim4_u.file; 6520 status = utf8_dir_verify(component); 6521 if (status != NFS4_OK) 6522 return (status); 6523 6524 nm = utf8_to_fn(component, &buflen, NULL); 6525 6526 if (nm == NULL) 6527 return (NFS4ERR_RESOURCE); 6528 6529 if (buflen > MAXNAMELEN) { 6530 kmem_free(nm, buflen); 6531 return (NFS4ERR_NAMETOOLONG); 6532 } 6533 6534 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; 6535 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); 6536 if (error) { 6537 kmem_free(nm, buflen); 6538 return (puterrno4(error)); 6539 } 6540 6541 if (bva.va_type != VDIR) { 6542 kmem_free(nm, buflen); 6543 return (NFS4ERR_NOTDIR); 6544 } 6545 6546 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) 6547 6548 switch (args->mode) { 6549 case GUARDED4: 6550 /*FALLTHROUGH*/ 6551 case UNCHECKED4: 6552 nfs4_ntov_table_init(&ntov); 6553 ntov_table_init = TRUE; 6554 6555 *attrset = 0; 6556 status = do_rfs4_set_attrs(attrset, 6557 &args->createhow4_u.createattrs, 6558 cs, &sarg, &ntov, NFS4ATTR_SETIT); 6559 6560 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && 6561 sarg.vap->va_type != VREG) { 6562 if (sarg.vap->va_type == VDIR) 6563 status = NFS4ERR_ISDIR; 6564 else if (sarg.vap->va_type == VLNK) 6565 status = NFS4ERR_SYMLINK; 6566 else 6567 status = NFS4ERR_INVAL; 6568 } 6569 6570 if (status != NFS4_OK) { 6571 kmem_free(nm, buflen); 6572 nfs4_ntov_table_free(&ntov, &sarg); 6573 *attrset = 0; 6574 return (status); 6575 } 6576 6577 vap = sarg.vap; 6578 vap->va_type = VREG; 6579 vap->va_mask |= AT_TYPE; 6580 6581 if ((vap->va_mask & AT_MODE) == 0) { 6582 vap->va_mask |= AT_MODE; 6583 vap->va_mode = (mode_t)0600; 6584 } 6585 6586 if (vap->va_mask & AT_SIZE) { 6587 6588 /* Disallow create with a non-zero size */ 6589 6590 if ((reqsize = sarg.vap->va_size) != 0) { 6591 kmem_free(nm, buflen); 6592 nfs4_ntov_table_free(&ntov, &sarg); 6593 *attrset = 0; 6594 return (NFS4ERR_INVAL); 6595 } 6596 setsize = TRUE; 6597 } 6598 break; 6599 6600 case EXCLUSIVE4: 6601 /* prohibit EXCL create of named attributes */ 6602 if (dvp->v_flag & V_XATTRDIR) { 6603 kmem_free(nm, buflen); 6604 *attrset = 0; 6605 return (NFS4ERR_INVAL); 6606 } 6607 6608 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; 6609 cva.va_type = VREG; 6610 /* 6611 * Ensure no time overflows. Assumes underlying 6612 * filesystem supports at least 32 bits. 6613 * Truncate nsec to usec resolution to allow valid 6614 * compares even if the underlying filesystem truncates. 6615 */ 6616 mtime = (timespec32_t *)&args->createhow4_u.createverf; 6617 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; 6618 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; 6619 cva.va_mode = (mode_t)0; 6620 vap = &cva; 6621 6622 /* 6623 * For EXCL create, attrset is set to the server attr 6624 * used to cache the client's verifier. 6625 */ 6626 *attrset = FATTR4_TIME_MODIFY_MASK; 6627 break; 6628 } 6629 6630 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 6631 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, 6632 MAXPATHLEN + 1); 6633 6634 if (name == NULL) { 6635 kmem_free(nm, buflen); 6636 return (NFS4ERR_SERVERFAULT); 6637 } 6638 6639 status = create_vnode(dvp, name, vap, args->mode, mtime, 6640 cs->cr, &vp, &created); 6641 if (nm != name) 6642 kmem_free(name, MAXPATHLEN + 1); 6643 kmem_free(nm, buflen); 6644 6645 if (status != NFS4_OK) { 6646 if (ntov_table_init) 6647 nfs4_ntov_table_free(&ntov, &sarg); 6648 *attrset = 0; 6649 return (status); 6650 } 6651 6652 trunc = (setsize && !created); 6653 6654 if (args->mode != EXCLUSIVE4) { 6655 bitmap4 createmask = args->createhow4_u.createattrs.attrmask; 6656 6657 /* 6658 * True verification that object was created with correct 6659 * attrs is impossible. The attrs could have been changed 6660 * immediately after object creation. If attributes did 6661 * not verify, the only recourse for the server is to 6662 * destroy the object. Maybe if some attrs (like gid) 6663 * are set incorrectly, the object should be destroyed; 6664 * however, seems bad as a default policy. Do we really 6665 * want to destroy an object over one of the times not 6666 * verifying correctly? For these reasons, the server 6667 * currently sets bits in attrset for createattrs 6668 * that were set; however, no verification is done. 6669 * 6670 * vmask_to_nmask accounts for vattr bits set on create 6671 * [do_rfs4_set_attrs() only sets resp bits for 6672 * non-vattr/vfs bits.] 6673 * Mask off any bits we set by default so as not to return 6674 * more attrset bits than were requested in createattrs 6675 */ 6676 if (created) { 6677 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); 6678 *attrset &= createmask; 6679 } else { 6680 /* 6681 * We did not create the vnode (we tried but it 6682 * already existed). In this case, the only createattr 6683 * that the spec allows the server to set is size, 6684 * and even then, it can only be set if it is 0. 6685 */ 6686 *attrset = 0; 6687 if (trunc) 6688 *attrset = FATTR4_SIZE_MASK; 6689 } 6690 } 6691 if (ntov_table_init) 6692 nfs4_ntov_table_free(&ntov, &sarg); 6693 6694 /* 6695 * Get the initial "after" sequence number, if it fails, 6696 * set to zero, time to before. 6697 */ 6698 iva.va_mask = AT_CTIME|AT_SEQ; 6699 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { 6700 iva.va_seq = 0; 6701 iva.va_ctime = bva.va_ctime; 6702 } 6703 6704 /* 6705 * create_vnode attempts to create the file exclusive, 6706 * if it already exists the VOP_CREATE will fail and 6707 * may not increase va_seq. It is atomic if 6708 * we haven't changed the directory, but if it has changed 6709 * we don't know what changed it. 6710 */ 6711 if (!created) { 6712 if (bva.va_seq && iva.va_seq && 6713 bva.va_seq == iva.va_seq) 6714 cinfo->atomic = TRUE; 6715 else 6716 cinfo->atomic = FALSE; 6717 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); 6718 } else { 6719 /* 6720 * The entry was created, we need to sync the 6721 * directory metadata. 6722 */ 6723 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); 6724 6725 /* 6726 * Get "after" change value, if it fails, simply return the 6727 * before value. 6728 */ 6729 ava.va_mask = AT_CTIME|AT_SEQ; 6730 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { 6731 ava.va_ctime = bva.va_ctime; 6732 ava.va_seq = 0; 6733 } 6734 6735 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); 6736 6737 /* 6738 * The cinfo->atomic = TRUE only if we have 6739 * non-zero va_seq's, and it has incremented by exactly one 6740 * during the create_vnode and it didn't 6741 * change during the VOP_FSYNC. 6742 */ 6743 if (bva.va_seq && iva.va_seq && ava.va_seq && 6744 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) 6745 cinfo->atomic = TRUE; 6746 else 6747 cinfo->atomic = FALSE; 6748 } 6749 6750 /* Check for mandatory locking and that the size gets set. */ 6751 cva.va_mask = AT_MODE; 6752 if (setsize) 6753 cva.va_mask |= AT_SIZE; 6754 6755 /* Assume the worst */ 6756 cs->mandlock = TRUE; 6757 6758 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { 6759 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); 6760 6761 /* 6762 * Truncate the file if necessary; this would be 6763 * the case for create over an existing file. 6764 */ 6765 6766 if (trunc) { 6767 int in_crit = 0; 6768 rfs4_file_t *fp; 6769 bool_t create = FALSE; 6770 6771 /* 6772 * We are writing over an existing file. 6773 * Check to see if we need to recall a delegation. 6774 */ 6775 rfs4_hold_deleg_policy(); 6776 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { 6777 if (rfs4_check_delegated_byfp(FWRITE, fp, 6778 (reqsize == 0), FALSE, FALSE, &clientid)) { 6779 rfs4_file_rele(fp); 6780 rfs4_rele_deleg_policy(); 6781 VN_RELE(vp); 6782 *attrset = 0; 6783 return (NFS4ERR_DELAY); 6784 } 6785 rfs4_file_rele(fp); 6786 } 6787 rfs4_rele_deleg_policy(); 6788 6789 if (nbl_need_check(vp)) { 6790 in_crit = 1; 6791 6792 ASSERT(reqsize == 0); 6793 6794 nbl_start_crit(vp, RW_READER); 6795 if (nbl_conflict(vp, NBL_WRITE, 0, 6796 cva.va_size, 0, NULL)) { 6797 in_crit = 0; 6798 nbl_end_crit(vp); 6799 VN_RELE(vp); 6800 *attrset = 0; 6801 return (NFS4ERR_ACCESS); 6802 } 6803 } 6804 ct.cc_sysid = 0; 6805 ct.cc_pid = 0; 6806 ct.cc_caller_id = nfs4_srv_caller_id; 6807 ct.cc_flags = CC_DONTBLOCK; 6808 6809 cva.va_mask = AT_SIZE; 6810 cva.va_size = reqsize; 6811 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); 6812 if (in_crit) 6813 nbl_end_crit(vp); 6814 } 6815 } 6816 6817 error = makefh4(&cs->fh, vp, cs->exi); 6818 6819 /* 6820 * Force modified data and metadata out to stable storage. 6821 */ 6822 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); 6823 6824 if (error) { 6825 VN_RELE(vp); 6826 *attrset = 0; 6827 return (puterrno4(error)); 6828 } 6829 6830 /* if parent dir is attrdir, set namedattr fh flag */ 6831 if (dvp->v_flag & V_XATTRDIR) 6832 set_fh4_flag(&cs->fh, FH4_NAMEDATTR); 6833 6834 if (cs->vp) 6835 VN_RELE(cs->vp); 6836 6837 cs->vp = vp; 6838 6839 /* 6840 * if we did not create the file, we will need to check 6841 * the access bits on the file 6842 */ 6843 6844 if (!created) { 6845 if (setsize) 6846 args->share_access |= OPEN4_SHARE_ACCESS_WRITE; 6847 status = check_open_access(args->share_access, cs, req); 6848 if (status != NFS4_OK) 6849 *attrset = 0; 6850 } 6851 return (status); 6852 } 6853 6854 /*ARGSUSED*/ 6855 static void 6856 rfs4_do_open(struct compound_state *cs, struct svc_req *req, 6857 rfs4_openowner_t *oo, delegreq_t deleg, 6858 uint32_t access, uint32_t deny, 6859 OPEN4res *resp, int deleg_cur) 6860 { 6861 /* XXX Currently not using req */ 6862 rfs4_state_t *sp; 6863 rfs4_file_t *fp; 6864 bool_t screate = TRUE; 6865 bool_t fcreate = TRUE; 6866 uint32_t open_a, share_a; 6867 uint32_t open_d, share_d; 6868 rfs4_deleg_state_t *dsp; 6869 sysid_t sysid; 6870 nfsstat4 status; 6871 caller_context_t ct; 6872 int fflags = 0; 6873 int recall = 0; 6874 int err; 6875 int first_open; 6876 6877 /* get the file struct and hold a lock on it during initial open */ 6878 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); 6879 if (fp == NULL) { 6880 resp->status = NFS4ERR_RESOURCE; 6881 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); 6882 return; 6883 } 6884 6885 sp = rfs4_findstate_by_owner_file(oo, fp, &screate); 6886 if (sp == NULL) { 6887 resp->status = NFS4ERR_RESOURCE; 6888 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); 6889 /* No need to keep any reference */ 6890 rw_exit(&fp->rf_file_rwlock); 6891 rfs4_file_rele(fp); 6892 return; 6893 } 6894 6895 /* try to get the sysid before continuing */ 6896 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { 6897 resp->status = status; 6898 rfs4_file_rele(fp); 6899 /* Not a fully formed open; "close" it */ 6900 if (screate == TRUE) 6901 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6902 rfs4_state_rele(sp); 6903 return; 6904 } 6905 6906 /* Calculate the fflags for this OPEN. */ 6907 if (access & OPEN4_SHARE_ACCESS_READ) 6908 fflags |= FREAD; 6909 if (access & OPEN4_SHARE_ACCESS_WRITE) 6910 fflags |= FWRITE; 6911 6912 rfs4_dbe_lock(sp->rs_dbe); 6913 6914 /* 6915 * Calculate the new deny and access mode that this open is adding to 6916 * the file for this open owner; 6917 */ 6918 open_d = (deny & ~sp->rs_open_deny); 6919 open_a = (access & ~sp->rs_open_access); 6920 6921 /* 6922 * Calculate the new share access and share deny modes that this open 6923 * is adding to the file for this open owner; 6924 */ 6925 share_a = (access & ~sp->rs_share_access); 6926 share_d = (deny & ~sp->rs_share_deny); 6927 6928 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; 6929 6930 /* 6931 * Check to see the client has already sent an open for this 6932 * open owner on this file with the same share/deny modes. 6933 * If so, we don't need to check for a conflict and we don't 6934 * need to add another shrlock. If not, then we need to 6935 * check for conflicts in deny and access before checking for 6936 * conflicts in delegation. We don't want to recall a 6937 * delegation based on an open that will eventually fail based 6938 * on shares modes. 6939 */ 6940 6941 if (share_a || share_d) { 6942 if ((err = rfs4_share(sp, access, deny)) != 0) { 6943 rfs4_dbe_unlock(sp->rs_dbe); 6944 resp->status = err; 6945 6946 rfs4_file_rele(fp); 6947 /* Not a fully formed open; "close" it */ 6948 if (screate == TRUE) 6949 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6950 rfs4_state_rele(sp); 6951 return; 6952 } 6953 } 6954 6955 rfs4_dbe_lock(fp->rf_dbe); 6956 6957 /* 6958 * Check to see if this file is delegated and if so, if a 6959 * recall needs to be done. 6960 */ 6961 if (rfs4_check_recall(sp, access)) { 6962 rfs4_dbe_unlock(fp->rf_dbe); 6963 rfs4_dbe_unlock(sp->rs_dbe); 6964 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); 6965 delay(NFS4_DELEGATION_CONFLICT_DELAY); 6966 rfs4_dbe_lock(sp->rs_dbe); 6967 6968 /* if state closed while lock was dropped */ 6969 if (sp->rs_closed) { 6970 if (share_a || share_d) 6971 (void) rfs4_unshare(sp); 6972 rfs4_dbe_unlock(sp->rs_dbe); 6973 rfs4_file_rele(fp); 6974 /* Not a fully formed open; "close" it */ 6975 if (screate == TRUE) 6976 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6977 rfs4_state_rele(sp); 6978 resp->status = NFS4ERR_OLD_STATEID; 6979 return; 6980 } 6981 6982 rfs4_dbe_lock(fp->rf_dbe); 6983 /* Let's see if the delegation was returned */ 6984 if (rfs4_check_recall(sp, access)) { 6985 rfs4_dbe_unlock(fp->rf_dbe); 6986 if (share_a || share_d) 6987 (void) rfs4_unshare(sp); 6988 rfs4_dbe_unlock(sp->rs_dbe); 6989 rfs4_file_rele(fp); 6990 rfs4_update_lease(sp->rs_owner->ro_client); 6991 6992 /* Not a fully formed open; "close" it */ 6993 if (screate == TRUE) 6994 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 6995 rfs4_state_rele(sp); 6996 resp->status = NFS4ERR_DELAY; 6997 return; 6998 } 6999 } 7000 /* 7001 * the share check passed and any delegation conflict has been 7002 * taken care of, now call vop_open. 7003 * if this is the first open then call vop_open with fflags. 7004 * if not, call vn_open_upgrade with just the upgrade flags. 7005 * 7006 * if the file has been opened already, it will have the current 7007 * access mode in the state struct. if it has no share access, then 7008 * this is a new open. 7009 * 7010 * However, if this is open with CLAIM_DLEGATE_CUR, then don't 7011 * call VOP_OPEN(), just do the open upgrade. 7012 */ 7013 if (first_open && !deleg_cur) { 7014 ct.cc_sysid = sysid; 7015 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 7016 ct.cc_caller_id = nfs4_srv_caller_id; 7017 ct.cc_flags = CC_DONTBLOCK; 7018 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); 7019 if (err) { 7020 rfs4_dbe_unlock(fp->rf_dbe); 7021 if (share_a || share_d) 7022 (void) rfs4_unshare(sp); 7023 rfs4_dbe_unlock(sp->rs_dbe); 7024 rfs4_file_rele(fp); 7025 7026 /* Not a fully formed open; "close" it */ 7027 if (screate == TRUE) 7028 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 7029 rfs4_state_rele(sp); 7030 /* check if a monitor detected a delegation conflict */ 7031 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) 7032 resp->status = NFS4ERR_DELAY; 7033 else 7034 resp->status = NFS4ERR_SERVERFAULT; 7035 return; 7036 } 7037 } else { /* open upgrade */ 7038 /* 7039 * calculate the fflags for the new mode that is being added 7040 * by this upgrade. 7041 */ 7042 fflags = 0; 7043 if (open_a & OPEN4_SHARE_ACCESS_READ) 7044 fflags |= FREAD; 7045 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 7046 fflags |= FWRITE; 7047 vn_open_upgrade(cs->vp, fflags); 7048 } 7049 sp->rs_open_access |= access; 7050 sp->rs_open_deny |= deny; 7051 7052 if (open_d & OPEN4_SHARE_DENY_READ) 7053 fp->rf_deny_read++; 7054 if (open_d & OPEN4_SHARE_DENY_WRITE) 7055 fp->rf_deny_write++; 7056 fp->rf_share_deny |= deny; 7057 7058 if (open_a & OPEN4_SHARE_ACCESS_READ) 7059 fp->rf_access_read++; 7060 if (open_a & OPEN4_SHARE_ACCESS_WRITE) 7061 fp->rf_access_write++; 7062 fp->rf_share_access |= access; 7063 7064 /* 7065 * Check for delegation here. if the deleg argument is not 7066 * DELEG_ANY, then this is a reclaim from a client and 7067 * we must honor the delegation requested. If necessary we can 7068 * set the recall flag. 7069 */ 7070 7071 dsp = rfs4_grant_delegation(deleg, sp, &recall); 7072 7073 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); 7074 7075 next_stateid(&sp->rs_stateid); 7076 7077 resp->stateid = sp->rs_stateid.stateid; 7078 7079 rfs4_dbe_unlock(fp->rf_dbe); 7080 rfs4_dbe_unlock(sp->rs_dbe); 7081 7082 if (dsp) { 7083 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); 7084 rfs4_deleg_state_rele(dsp); 7085 } 7086 7087 rfs4_file_rele(fp); 7088 rfs4_state_rele(sp); 7089 7090 resp->status = NFS4_OK; 7091 } 7092 7093 /*ARGSUSED*/ 7094 static void 7095 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, 7096 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7097 { 7098 change_info4 *cinfo = &resp->cinfo; 7099 bitmap4 *attrset = &resp->attrset; 7100 7101 if (args->opentype == OPEN4_NOCREATE) 7102 resp->status = rfs4_lookupfile(&args->open_claim4_u.file, 7103 req, cs, args->share_access, cinfo); 7104 else { 7105 /* inhibit delegation grants during exclusive create */ 7106 7107 if (args->mode == EXCLUSIVE4) 7108 rfs4_disable_delegation(); 7109 7110 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, 7111 oo->ro_client->rc_clientid); 7112 } 7113 7114 if (resp->status == NFS4_OK) { 7115 7116 /* cs->vp cs->fh now reference the desired file */ 7117 7118 rfs4_do_open(cs, req, oo, 7119 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, 7120 args->share_access, args->share_deny, resp, 0); 7121 7122 /* 7123 * If rfs4_createfile set attrset, we must 7124 * clear this attrset before the response is copied. 7125 */ 7126 if (resp->status != NFS4_OK && resp->attrset) { 7127 resp->attrset = 0; 7128 } 7129 } 7130 else 7131 *cs->statusp = resp->status; 7132 7133 if (args->mode == EXCLUSIVE4) 7134 rfs4_enable_delegation(); 7135 } 7136 7137 /*ARGSUSED*/ 7138 static void 7139 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, 7140 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7141 { 7142 change_info4 *cinfo = &resp->cinfo; 7143 vattr_t va; 7144 vtype_t v_type = cs->vp->v_type; 7145 int error = 0; 7146 7147 /* Verify that we have a regular file */ 7148 if (v_type != VREG) { 7149 if (v_type == VDIR) 7150 resp->status = NFS4ERR_ISDIR; 7151 else if (v_type == VLNK) 7152 resp->status = NFS4ERR_SYMLINK; 7153 else 7154 resp->status = NFS4ERR_INVAL; 7155 return; 7156 } 7157 7158 va.va_mask = AT_MODE|AT_UID; 7159 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); 7160 if (error) { 7161 resp->status = puterrno4(error); 7162 return; 7163 } 7164 7165 cs->mandlock = MANDLOCK(cs->vp, va.va_mode); 7166 7167 /* 7168 * Check if we have access to the file, Note the the file 7169 * could have originally been open UNCHECKED or GUARDED 7170 * with mode bits that will now fail, but there is nothing 7171 * we can really do about that except in the case that the 7172 * owner of the file is the one requesting the open. 7173 */ 7174 if (crgetuid(cs->cr) != va.va_uid) { 7175 resp->status = check_open_access(args->share_access, cs, req); 7176 if (resp->status != NFS4_OK) { 7177 return; 7178 } 7179 } 7180 7181 /* 7182 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero 7183 */ 7184 cinfo->before = 0; 7185 cinfo->after = 0; 7186 cinfo->atomic = FALSE; 7187 7188 rfs4_do_open(cs, req, oo, 7189 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), 7190 args->share_access, args->share_deny, resp, 0); 7191 } 7192 7193 static void 7194 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, 7195 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7196 { 7197 int error; 7198 nfsstat4 status; 7199 stateid4 stateid = 7200 args->open_claim4_u.delegate_cur_info.delegate_stateid; 7201 rfs4_deleg_state_t *dsp; 7202 7203 /* 7204 * Find the state info from the stateid and confirm that the 7205 * file is delegated. If the state openowner is the same as 7206 * the supplied openowner we're done. If not, get the file 7207 * info from the found state info. Use that file info to 7208 * create the state for this lock owner. Note solaris doen't 7209 * really need the pathname to find the file. We may want to 7210 * lookup the pathname and make sure that the vp exist and 7211 * matches the vp in the file structure. However it is 7212 * possible that the pathname nolonger exists (local process 7213 * unlinks the file), so this may not be that useful. 7214 */ 7215 7216 status = rfs4_get_deleg_state(&stateid, &dsp); 7217 if (status != NFS4_OK) { 7218 resp->status = status; 7219 return; 7220 } 7221 7222 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); 7223 7224 /* 7225 * New lock owner, create state. Since this was probably called 7226 * in response to a CB_RECALL we set deleg to DELEG_NONE 7227 */ 7228 7229 ASSERT(cs->vp != NULL); 7230 VN_RELE(cs->vp); 7231 VN_HOLD(dsp->rds_finfo->rf_vp); 7232 cs->vp = dsp->rds_finfo->rf_vp; 7233 7234 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { 7235 rfs4_deleg_state_rele(dsp); 7236 *cs->statusp = resp->status = puterrno4(error); 7237 return; 7238 } 7239 7240 /* Mark progress for delegation returns */ 7241 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); 7242 rfs4_deleg_state_rele(dsp); 7243 rfs4_do_open(cs, req, oo, DELEG_NONE, 7244 args->share_access, args->share_deny, resp, 1); 7245 } 7246 7247 /*ARGSUSED*/ 7248 static void 7249 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, 7250 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) 7251 { 7252 /* 7253 * Lookup the pathname, it must already exist since this file 7254 * was delegated. 7255 * 7256 * Find the file and state info for this vp and open owner pair. 7257 * check that they are in fact delegated. 7258 * check that the state access and deny modes are the same. 7259 * 7260 * Return the delgation possibly seting the recall flag. 7261 */ 7262 rfs4_file_t *fp; 7263 rfs4_state_t *sp; 7264 bool_t create = FALSE; 7265 bool_t dcreate = FALSE; 7266 rfs4_deleg_state_t *dsp; 7267 nfsace4 *ace; 7268 7269 /* Note we ignore oflags */ 7270 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, 7271 req, cs, args->share_access, &resp->cinfo); 7272 7273 if (resp->status != NFS4_OK) { 7274 return; 7275 } 7276 7277 /* get the file struct and hold a lock on it during initial open */ 7278 fp = rfs4_findfile_withlock(cs->vp, NULL, &create); 7279 if (fp == NULL) { 7280 resp->status = NFS4ERR_RESOURCE; 7281 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); 7282 return; 7283 } 7284 7285 sp = rfs4_findstate_by_owner_file(oo, fp, &create); 7286 if (sp == NULL) { 7287 resp->status = NFS4ERR_SERVERFAULT; 7288 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); 7289 rw_exit(&fp->rf_file_rwlock); 7290 rfs4_file_rele(fp); 7291 return; 7292 } 7293 7294 rfs4_dbe_lock(sp->rs_dbe); 7295 rfs4_dbe_lock(fp->rf_dbe); 7296 if (args->share_access != sp->rs_share_access || 7297 args->share_deny != sp->rs_share_deny || 7298 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { 7299 NFS4_DEBUG(rfs4_debug, 7300 (CE_NOTE, "rfs4_do_opendelprev: state mixup")); 7301 rfs4_dbe_unlock(fp->rf_dbe); 7302 rfs4_dbe_unlock(sp->rs_dbe); 7303 rfs4_file_rele(fp); 7304 rfs4_state_rele(sp); 7305 resp->status = NFS4ERR_SERVERFAULT; 7306 return; 7307 } 7308 rfs4_dbe_unlock(fp->rf_dbe); 7309 rfs4_dbe_unlock(sp->rs_dbe); 7310 7311 dsp = rfs4_finddeleg(sp, &dcreate); 7312 if (dsp == NULL) { 7313 rfs4_state_rele(sp); 7314 rfs4_file_rele(fp); 7315 resp->status = NFS4ERR_SERVERFAULT; 7316 return; 7317 } 7318 7319 next_stateid(&sp->rs_stateid); 7320 7321 resp->stateid = sp->rs_stateid.stateid; 7322 7323 resp->delegation.delegation_type = dsp->rds_dtype; 7324 7325 if (dsp->rds_dtype == OPEN_DELEGATE_READ) { 7326 open_read_delegation4 *rv = 7327 &resp->delegation.open_delegation4_u.read; 7328 7329 rv->stateid = dsp->rds_delegid.stateid; 7330 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7331 ace = &rv->permissions; 7332 } else { 7333 open_write_delegation4 *rv = 7334 &resp->delegation.open_delegation4_u.write; 7335 7336 rv->stateid = dsp->rds_delegid.stateid; 7337 rv->recall = FALSE; /* no policy in place to set to TRUE */ 7338 ace = &rv->permissions; 7339 rv->space_limit.limitby = NFS_LIMIT_SIZE; 7340 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; 7341 } 7342 7343 /* XXX For now */ 7344 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; 7345 ace->flag = 0; 7346 ace->access_mask = 0; 7347 ace->who.utf8string_len = 0; 7348 ace->who.utf8string_val = 0; 7349 7350 rfs4_deleg_state_rele(dsp); 7351 rfs4_state_rele(sp); 7352 rfs4_file_rele(fp); 7353 } 7354 7355 typedef enum { 7356 NFS4_CHKSEQ_OKAY = 0, 7357 NFS4_CHKSEQ_REPLAY = 1, 7358 NFS4_CHKSEQ_BAD = 2 7359 } rfs4_chkseq_t; 7360 7361 /* 7362 * Generic function for sequence number checks. 7363 */ 7364 static rfs4_chkseq_t 7365 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, 7366 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) 7367 { 7368 /* Same sequence ids and matching operations? */ 7369 if (seqid == rqst_seq && resop->resop == lastop->resop) { 7370 if (copyres == TRUE) { 7371 rfs4_free_reply(resop); 7372 rfs4_copy_reply(resop, lastop); 7373 } 7374 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 7375 "Replayed SEQID %d\n", seqid)); 7376 return (NFS4_CHKSEQ_REPLAY); 7377 } 7378 7379 /* If the incoming sequence is not the next expected then it is bad */ 7380 if (rqst_seq != seqid + 1) { 7381 if (rqst_seq == seqid) { 7382 NFS4_DEBUG(rfs4_debug, 7383 (CE_NOTE, "BAD SEQID: Replayed sequence id " 7384 "but last op was %d current op is %d\n", 7385 lastop->resop, resop->resop)); 7386 return (NFS4_CHKSEQ_BAD); 7387 } 7388 NFS4_DEBUG(rfs4_debug, 7389 (CE_NOTE, "BAD SEQID: got %u expecting %u\n", 7390 rqst_seq, seqid)); 7391 return (NFS4_CHKSEQ_BAD); 7392 } 7393 7394 /* Everything okay -- next expected */ 7395 return (NFS4_CHKSEQ_OKAY); 7396 } 7397 7398 7399 static rfs4_chkseq_t 7400 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7401 { 7402 rfs4_chkseq_t rc; 7403 7404 rfs4_dbe_lock(op->ro_dbe); 7405 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, 7406 TRUE); 7407 rfs4_dbe_unlock(op->ro_dbe); 7408 7409 if (rc == NFS4_CHKSEQ_OKAY) 7410 rfs4_update_lease(op->ro_client); 7411 7412 return (rc); 7413 } 7414 7415 static rfs4_chkseq_t 7416 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) 7417 { 7418 rfs4_chkseq_t rc; 7419 7420 rfs4_dbe_lock(op->ro_dbe); 7421 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, 7422 olo_seqid, resop, FALSE); 7423 rfs4_dbe_unlock(op->ro_dbe); 7424 7425 return (rc); 7426 } 7427 7428 static rfs4_chkseq_t 7429 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) 7430 { 7431 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; 7432 7433 rfs4_dbe_lock(lsp->rls_dbe); 7434 if (!lsp->rls_skip_seqid_check) 7435 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, 7436 resop, TRUE); 7437 rfs4_dbe_unlock(lsp->rls_dbe); 7438 7439 return (rc); 7440 } 7441 7442 static void 7443 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, 7444 struct svc_req *req, struct compound_state *cs) 7445 { 7446 OPEN4args *args = &argop->nfs_argop4_u.opopen; 7447 OPEN4res *resp = &resop->nfs_resop4_u.opopen; 7448 open_owner4 *owner = &args->owner; 7449 open_claim_type4 claim = args->claim; 7450 rfs4_client_t *cp; 7451 rfs4_openowner_t *oo; 7452 bool_t create; 7453 bool_t replay = FALSE; 7454 int can_reclaim; 7455 7456 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, 7457 OPEN4args *, args); 7458 7459 if (cs->vp == NULL) { 7460 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7461 goto end; 7462 } 7463 7464 /* 7465 * Need to check clientid and lease expiration first based on 7466 * error ordering and incrementing sequence id. 7467 */ 7468 cp = rfs4_findclient_by_id(owner->clientid, FALSE); 7469 if (cp == NULL) { 7470 *cs->statusp = resp->status = 7471 rfs4_check_clientid(&owner->clientid, 0); 7472 goto end; 7473 } 7474 7475 if (rfs4_lease_expired(cp)) { 7476 rfs4_client_close(cp); 7477 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7478 goto end; 7479 } 7480 can_reclaim = cp->rc_can_reclaim; 7481 7482 /* 7483 * Find the open_owner for use from this point forward. Take 7484 * care in updating the sequence id based on the type of error 7485 * being returned. 7486 */ 7487 retry: 7488 create = TRUE; 7489 oo = rfs4_findopenowner(owner, &create, args->seqid); 7490 if (oo == NULL) { 7491 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 7492 rfs4_client_rele(cp); 7493 goto end; 7494 } 7495 7496 /* Hold off access to the sequence space while the open is done */ 7497 rfs4_sw_enter(&oo->ro_sw); 7498 7499 /* 7500 * If the open_owner existed before at the server, then check 7501 * the sequence id. 7502 */ 7503 if (!create && !oo->ro_postpone_confirm) { 7504 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { 7505 case NFS4_CHKSEQ_BAD: 7506 if ((args->seqid > oo->ro_open_seqid) && 7507 oo->ro_need_confirm) { 7508 rfs4_free_opens(oo, TRUE, FALSE); 7509 rfs4_sw_exit(&oo->ro_sw); 7510 rfs4_openowner_rele(oo); 7511 goto retry; 7512 } 7513 resp->status = NFS4ERR_BAD_SEQID; 7514 goto out; 7515 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ 7516 replay = TRUE; 7517 goto out; 7518 default: 7519 break; 7520 } 7521 7522 /* 7523 * Sequence was ok and open owner exists 7524 * check to see if we have yet to see an 7525 * open_confirm. 7526 */ 7527 if (oo->ro_need_confirm) { 7528 rfs4_free_opens(oo, TRUE, FALSE); 7529 rfs4_sw_exit(&oo->ro_sw); 7530 rfs4_openowner_rele(oo); 7531 goto retry; 7532 } 7533 } 7534 /* Grace only applies to regular-type OPENs */ 7535 if (rfs4_clnt_in_grace(cp) && 7536 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { 7537 *cs->statusp = resp->status = NFS4ERR_GRACE; 7538 goto out; 7539 } 7540 7541 /* 7542 * If previous state at the server existed then can_reclaim 7543 * will be set. If not reply NFS4ERR_NO_GRACE to the 7544 * client. 7545 */ 7546 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { 7547 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7548 goto out; 7549 } 7550 7551 7552 /* 7553 * Reject the open if the client has missed the grace period 7554 */ 7555 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { 7556 *cs->statusp = resp->status = NFS4ERR_NO_GRACE; 7557 goto out; 7558 } 7559 7560 /* Couple of up-front bookkeeping items */ 7561 if (oo->ro_need_confirm) { 7562 /* 7563 * If this is a reclaim OPEN then we should not ask 7564 * for a confirmation of the open_owner per the 7565 * protocol specification. 7566 */ 7567 if (claim == CLAIM_PREVIOUS) 7568 oo->ro_need_confirm = FALSE; 7569 else 7570 resp->rflags |= OPEN4_RESULT_CONFIRM; 7571 } 7572 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; 7573 7574 /* 7575 * If there is an unshared filesystem mounted on this vnode, 7576 * do not allow to open/create in this directory. 7577 */ 7578 if (vn_ismntpt(cs->vp)) { 7579 *cs->statusp = resp->status = NFS4ERR_ACCESS; 7580 goto out; 7581 } 7582 7583 /* 7584 * access must READ, WRITE, or BOTH. No access is invalid. 7585 * deny can be READ, WRITE, BOTH, or NONE. 7586 * bits not defined for access/deny are invalid. 7587 */ 7588 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || 7589 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || 7590 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { 7591 *cs->statusp = resp->status = NFS4ERR_INVAL; 7592 goto out; 7593 } 7594 7595 7596 /* 7597 * make sure attrset is zero before response is built. 7598 */ 7599 resp->attrset = 0; 7600 7601 switch (claim) { 7602 case CLAIM_NULL: 7603 rfs4_do_opennull(cs, req, args, oo, resp); 7604 break; 7605 case CLAIM_PREVIOUS: 7606 rfs4_do_openprev(cs, req, args, oo, resp); 7607 break; 7608 case CLAIM_DELEGATE_CUR: 7609 rfs4_do_opendelcur(cs, req, args, oo, resp); 7610 break; 7611 case CLAIM_DELEGATE_PREV: 7612 rfs4_do_opendelprev(cs, req, args, oo, resp); 7613 break; 7614 default: 7615 resp->status = NFS4ERR_INVAL; 7616 break; 7617 } 7618 7619 out: 7620 rfs4_client_rele(cp); 7621 7622 /* Catch sequence id handling here to make it a little easier */ 7623 switch (resp->status) { 7624 case NFS4ERR_BADXDR: 7625 case NFS4ERR_BAD_SEQID: 7626 case NFS4ERR_BAD_STATEID: 7627 case NFS4ERR_NOFILEHANDLE: 7628 case NFS4ERR_RESOURCE: 7629 case NFS4ERR_STALE_CLIENTID: 7630 case NFS4ERR_STALE_STATEID: 7631 /* 7632 * The protocol states that if any of these errors are 7633 * being returned, the sequence id should not be 7634 * incremented. Any other return requires an 7635 * increment. 7636 */ 7637 break; 7638 default: 7639 /* Always update the lease in this case */ 7640 rfs4_update_lease(oo->ro_client); 7641 7642 /* Regular response - copy the result */ 7643 if (!replay) 7644 rfs4_update_open_resp(oo, resop, &cs->fh); 7645 7646 /* 7647 * REPLAY case: Only if the previous response was OK 7648 * do we copy the filehandle. If not OK, no 7649 * filehandle to copy. 7650 */ 7651 if (replay == TRUE && 7652 resp->status == NFS4_OK && 7653 oo->ro_reply_fh.nfs_fh4_val) { 7654 /* 7655 * If this is a replay, we must restore the 7656 * current filehandle/vp to that of what was 7657 * returned originally. Try our best to do 7658 * it. 7659 */ 7660 nfs_fh4_fmt_t *fh_fmtp = 7661 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; 7662 7663 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, 7664 (fid_t *)&fh_fmtp->fh4_xlen, NULL); 7665 7666 if (cs->exi == NULL) { 7667 resp->status = NFS4ERR_STALE; 7668 goto finish; 7669 } 7670 7671 VN_RELE(cs->vp); 7672 7673 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, 7674 &resp->status); 7675 7676 if (cs->vp == NULL) 7677 goto finish; 7678 7679 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); 7680 } 7681 7682 /* 7683 * If this was a replay, no need to update the 7684 * sequence id. If the open_owner was not created on 7685 * this pass, then update. The first use of an 7686 * open_owner will not bump the sequence id. 7687 */ 7688 if (replay == FALSE && !create) 7689 rfs4_update_open_sequence(oo); 7690 /* 7691 * If the client is receiving an error and the 7692 * open_owner needs to be confirmed, there is no way 7693 * to notify the client of this fact ignoring the fact 7694 * that the server has no method of returning a 7695 * stateid to confirm. Therefore, the server needs to 7696 * mark this open_owner in a way as to avoid the 7697 * sequence id checking the next time the client uses 7698 * this open_owner. 7699 */ 7700 if (resp->status != NFS4_OK && oo->ro_need_confirm) 7701 oo->ro_postpone_confirm = TRUE; 7702 /* 7703 * If OK response then clear the postpone flag and 7704 * reset the sequence id to keep in sync with the 7705 * client. 7706 */ 7707 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { 7708 oo->ro_postpone_confirm = FALSE; 7709 oo->ro_open_seqid = args->seqid; 7710 } 7711 break; 7712 } 7713 7714 finish: 7715 *cs->statusp = resp->status; 7716 7717 rfs4_sw_exit(&oo->ro_sw); 7718 rfs4_openowner_rele(oo); 7719 7720 end: 7721 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, 7722 OPEN4res *, resp); 7723 } 7724 7725 /*ARGSUSED*/ 7726 void 7727 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 7728 struct svc_req *req, struct compound_state *cs) 7729 { 7730 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; 7731 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; 7732 rfs4_state_t *sp; 7733 nfsstat4 status; 7734 7735 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, 7736 OPEN_CONFIRM4args *, args); 7737 7738 if (cs->vp == NULL) { 7739 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7740 goto out; 7741 } 7742 7743 if (cs->vp->v_type != VREG) { 7744 *cs->statusp = resp->status = 7745 cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL; 7746 return; 7747 } 7748 7749 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7750 if (status != NFS4_OK) { 7751 *cs->statusp = resp->status = status; 7752 goto out; 7753 } 7754 7755 /* Ensure specified filehandle matches */ 7756 if (cs->vp != sp->rs_finfo->rf_vp) { 7757 rfs4_state_rele(sp); 7758 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7759 goto out; 7760 } 7761 7762 /* hold off other access to open_owner while we tinker */ 7763 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7764 7765 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7766 case NFS4_CHECK_STATEID_OKAY: 7767 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7768 resop) != 0) { 7769 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7770 break; 7771 } 7772 /* 7773 * If it is the appropriate stateid and determined to 7774 * be "OKAY" then this means that the stateid does not 7775 * need to be confirmed and the client is in error for 7776 * sending an OPEN_CONFIRM. 7777 */ 7778 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7779 break; 7780 case NFS4_CHECK_STATEID_OLD: 7781 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7782 break; 7783 case NFS4_CHECK_STATEID_BAD: 7784 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7785 break; 7786 case NFS4_CHECK_STATEID_EXPIRED: 7787 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7788 break; 7789 case NFS4_CHECK_STATEID_CLOSED: 7790 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7791 break; 7792 case NFS4_CHECK_STATEID_REPLAY: 7793 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7794 resop)) { 7795 case NFS4_CHKSEQ_OKAY: 7796 /* 7797 * This is replayed stateid; if seqid matches 7798 * next expected, then client is using wrong seqid. 7799 */ 7800 /* fall through */ 7801 case NFS4_CHKSEQ_BAD: 7802 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7803 break; 7804 case NFS4_CHKSEQ_REPLAY: 7805 /* 7806 * Note this case is the duplicate case so 7807 * resp->status is already set. 7808 */ 7809 *cs->statusp = resp->status; 7810 rfs4_update_lease(sp->rs_owner->ro_client); 7811 break; 7812 } 7813 break; 7814 case NFS4_CHECK_STATEID_UNCONFIRMED: 7815 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7816 resop) != NFS4_CHKSEQ_OKAY) { 7817 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7818 break; 7819 } 7820 *cs->statusp = resp->status = NFS4_OK; 7821 7822 next_stateid(&sp->rs_stateid); 7823 resp->open_stateid = sp->rs_stateid.stateid; 7824 sp->rs_owner->ro_need_confirm = FALSE; 7825 rfs4_update_lease(sp->rs_owner->ro_client); 7826 rfs4_update_open_sequence(sp->rs_owner); 7827 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 7828 break; 7829 default: 7830 ASSERT(FALSE); 7831 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7832 break; 7833 } 7834 rfs4_sw_exit(&sp->rs_owner->ro_sw); 7835 rfs4_state_rele(sp); 7836 7837 out: 7838 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, 7839 OPEN_CONFIRM4res *, resp); 7840 } 7841 7842 /*ARGSUSED*/ 7843 void 7844 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, 7845 struct svc_req *req, struct compound_state *cs) 7846 { 7847 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; 7848 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; 7849 uint32_t access = args->share_access; 7850 uint32_t deny = args->share_deny; 7851 nfsstat4 status; 7852 rfs4_state_t *sp; 7853 rfs4_file_t *fp; 7854 int fflags = 0; 7855 7856 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, 7857 OPEN_DOWNGRADE4args *, args); 7858 7859 if (cs->vp == NULL) { 7860 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 7861 goto out; 7862 } 7863 7864 if (cs->vp->v_type != VREG) { 7865 *cs->statusp = resp->status = NFS4ERR_INVAL; 7866 return; 7867 } 7868 7869 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); 7870 if (status != NFS4_OK) { 7871 *cs->statusp = resp->status = status; 7872 goto out; 7873 } 7874 7875 /* Ensure specified filehandle matches */ 7876 if (cs->vp != sp->rs_finfo->rf_vp) { 7877 rfs4_state_rele(sp); 7878 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7879 goto out; 7880 } 7881 7882 /* hold off other access to open_owner while we tinker */ 7883 rfs4_sw_enter(&sp->rs_owner->ro_sw); 7884 7885 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 7886 case NFS4_CHECK_STATEID_OKAY: 7887 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7888 resop) != NFS4_CHKSEQ_OKAY) { 7889 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7890 goto end; 7891 } 7892 break; 7893 case NFS4_CHECK_STATEID_OLD: 7894 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7895 goto end; 7896 case NFS4_CHECK_STATEID_BAD: 7897 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7898 goto end; 7899 case NFS4_CHECK_STATEID_EXPIRED: 7900 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 7901 goto end; 7902 case NFS4_CHECK_STATEID_CLOSED: 7903 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 7904 goto end; 7905 case NFS4_CHECK_STATEID_UNCONFIRMED: 7906 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 7907 goto end; 7908 case NFS4_CHECK_STATEID_REPLAY: 7909 /* Check the sequence id for the open owner */ 7910 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 7911 resop)) { 7912 case NFS4_CHKSEQ_OKAY: 7913 /* 7914 * This is replayed stateid; if seqid matches 7915 * next expected, then client is using wrong seqid. 7916 */ 7917 /* fall through */ 7918 case NFS4_CHKSEQ_BAD: 7919 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 7920 goto end; 7921 case NFS4_CHKSEQ_REPLAY: 7922 /* 7923 * Note this case is the duplicate case so 7924 * resp->status is already set. 7925 */ 7926 *cs->statusp = resp->status; 7927 rfs4_update_lease(sp->rs_owner->ro_client); 7928 goto end; 7929 } 7930 break; 7931 default: 7932 ASSERT(FALSE); 7933 break; 7934 } 7935 7936 rfs4_dbe_lock(sp->rs_dbe); 7937 /* 7938 * Check that the new access modes and deny modes are valid. 7939 * Check that no invalid bits are set. 7940 */ 7941 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || 7942 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { 7943 *cs->statusp = resp->status = NFS4ERR_INVAL; 7944 rfs4_update_open_sequence(sp->rs_owner); 7945 rfs4_dbe_unlock(sp->rs_dbe); 7946 goto end; 7947 } 7948 7949 /* 7950 * The new modes must be a subset of the current modes and 7951 * the access must specify at least one mode. To test that 7952 * the new mode is a subset of the current modes we bitwise 7953 * AND them together and check that the result equals the new 7954 * mode. For example: 7955 * New mode, access == R and current mode, sp->rs_open_access == RW 7956 * access & sp->rs_open_access == R == access, so the new access mode 7957 * is valid. Consider access == RW, sp->rs_open_access = R 7958 * access & sp->rs_open_access == R != access, so the new access mode 7959 * is invalid. 7960 */ 7961 if ((access & sp->rs_open_access) != access || 7962 (deny & sp->rs_open_deny) != deny || 7963 (access & 7964 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { 7965 *cs->statusp = resp->status = NFS4ERR_INVAL; 7966 rfs4_update_open_sequence(sp->rs_owner); 7967 rfs4_dbe_unlock(sp->rs_dbe); 7968 goto end; 7969 } 7970 7971 /* 7972 * Release any share locks associated with this stateID. 7973 * Strictly speaking, this violates the spec because the 7974 * spec effectively requires that open downgrade be atomic. 7975 * At present, fs_shrlock does not have this capability. 7976 */ 7977 (void) rfs4_unshare(sp); 7978 7979 status = rfs4_share(sp, access, deny); 7980 if (status != NFS4_OK) { 7981 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 7982 rfs4_update_open_sequence(sp->rs_owner); 7983 rfs4_dbe_unlock(sp->rs_dbe); 7984 goto end; 7985 } 7986 7987 fp = sp->rs_finfo; 7988 rfs4_dbe_lock(fp->rf_dbe); 7989 7990 /* 7991 * If the current mode has deny read and the new mode 7992 * does not, decrement the number of deny read mode bits 7993 * and if it goes to zero turn off the deny read bit 7994 * on the file. 7995 */ 7996 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && 7997 (deny & OPEN4_SHARE_DENY_READ) == 0) { 7998 fp->rf_deny_read--; 7999 if (fp->rf_deny_read == 0) 8000 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8001 } 8002 8003 /* 8004 * If the current mode has deny write and the new mode 8005 * does not, decrement the number of deny write mode bits 8006 * and if it goes to zero turn off the deny write bit 8007 * on the file. 8008 */ 8009 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && 8010 (deny & OPEN4_SHARE_DENY_WRITE) == 0) { 8011 fp->rf_deny_write--; 8012 if (fp->rf_deny_write == 0) 8013 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8014 } 8015 8016 /* 8017 * If the current mode has access read and the new mode 8018 * does not, decrement the number of access read mode bits 8019 * and if it goes to zero turn off the access read bit 8020 * on the file. set fflags to FREAD for the call to 8021 * vn_open_downgrade(). 8022 */ 8023 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && 8024 (access & OPEN4_SHARE_ACCESS_READ) == 0) { 8025 fp->rf_access_read--; 8026 if (fp->rf_access_read == 0) 8027 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8028 fflags |= FREAD; 8029 } 8030 8031 /* 8032 * If the current mode has access write and the new mode 8033 * does not, decrement the number of access write mode bits 8034 * and if it goes to zero turn off the access write bit 8035 * on the file. set fflags to FWRITE for the call to 8036 * vn_open_downgrade(). 8037 */ 8038 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && 8039 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8040 fp->rf_access_write--; 8041 if (fp->rf_access_write == 0) 8042 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; 8043 fflags |= FWRITE; 8044 } 8045 8046 /* Check that the file is still accessible */ 8047 ASSERT(fp->rf_share_access); 8048 8049 rfs4_dbe_unlock(fp->rf_dbe); 8050 8051 /* now set the new open access and deny modes */ 8052 sp->rs_open_access = access; 8053 sp->rs_open_deny = deny; 8054 8055 /* 8056 * we successfully downgraded the share lock, now we need to downgrade 8057 * the open. it is possible that the downgrade was only for a deny 8058 * mode and we have nothing else to do. 8059 */ 8060 if ((fflags & (FREAD|FWRITE)) != 0) 8061 vn_open_downgrade(cs->vp, fflags); 8062 8063 /* Update the stateid */ 8064 next_stateid(&sp->rs_stateid); 8065 resp->open_stateid = sp->rs_stateid.stateid; 8066 8067 rfs4_dbe_unlock(sp->rs_dbe); 8068 8069 *cs->statusp = resp->status = NFS4_OK; 8070 /* Update the lease */ 8071 rfs4_update_lease(sp->rs_owner->ro_client); 8072 /* And the sequence */ 8073 rfs4_update_open_sequence(sp->rs_owner); 8074 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8075 8076 end: 8077 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8078 rfs4_state_rele(sp); 8079 out: 8080 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, 8081 OPEN_DOWNGRADE4res *, resp); 8082 } 8083 8084 static void * 8085 memstr(const void *s1, const char *s2, size_t n) 8086 { 8087 size_t l = strlen(s2); 8088 char *p = (char *)s1; 8089 8090 while (n >= l) { 8091 if (bcmp(p, s2, l) == 0) 8092 return (p); 8093 p++; 8094 n--; 8095 } 8096 8097 return (NULL); 8098 } 8099 8100 /* 8101 * The logic behind this function is detailed in the NFSv4 RFC in the 8102 * SETCLIENTID operation description under IMPLEMENTATION. Refer to 8103 * that section for explicit guidance to server behavior for 8104 * SETCLIENTID. 8105 */ 8106 void 8107 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, 8108 struct svc_req *req, struct compound_state *cs) 8109 { 8110 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; 8111 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; 8112 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; 8113 rfs4_clntip_t *ci; 8114 bool_t create; 8115 char *addr, *netid; 8116 int len; 8117 8118 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, 8119 SETCLIENTID4args *, args); 8120 retry: 8121 newcp = cp_confirmed = cp_unconfirmed = NULL; 8122 8123 /* 8124 * Save the caller's IP address 8125 */ 8126 args->client.cl_addr = 8127 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 8128 8129 /* 8130 * Record if it is a Solaris client that cannot handle referrals. 8131 */ 8132 if (memstr(args->client.id_val, "Solaris", args->client.id_len) && 8133 !memstr(args->client.id_val, "+referrals", args->client.id_len)) { 8134 /* Add a "yes, it's downrev" record */ 8135 create = TRUE; 8136 ci = rfs4_find_clntip(args->client.cl_addr, &create); 8137 ASSERT(ci != NULL); 8138 rfs4_dbe_rele(ci->ri_dbe); 8139 } else { 8140 /* Remove any previous record */ 8141 rfs4_invalidate_clntip(args->client.cl_addr); 8142 } 8143 8144 /* 8145 * In search of an EXISTING client matching the incoming 8146 * request to establish a new client identifier at the server 8147 */ 8148 create = TRUE; 8149 cp = rfs4_findclient(&args->client, &create, NULL); 8150 8151 /* Should never happen */ 8152 ASSERT(cp != NULL); 8153 8154 if (cp == NULL) { 8155 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8156 goto out; 8157 } 8158 8159 /* 8160 * Easiest case. Client identifier is newly created and is 8161 * unconfirmed. Also note that for this case, no other 8162 * entries exist for the client identifier. Nothing else to 8163 * check. Just setup the response and respond. 8164 */ 8165 if (create) { 8166 *cs->statusp = res->status = NFS4_OK; 8167 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; 8168 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8169 cp->rc_confirm_verf; 8170 /* Setup callback information; CB_NULL confirmation later */ 8171 rfs4_client_setcb(cp, &args->callback, args->callback_ident); 8172 8173 rfs4_client_rele(cp); 8174 goto out; 8175 } 8176 8177 /* 8178 * An existing, confirmed client may exist but it may not have 8179 * been active for at least one lease period. If so, then 8180 * "close" the client and create a new client identifier 8181 */ 8182 if (rfs4_lease_expired(cp)) { 8183 rfs4_client_close(cp); 8184 goto retry; 8185 } 8186 8187 if (cp->rc_need_confirm == TRUE) 8188 cp_unconfirmed = cp; 8189 else 8190 cp_confirmed = cp; 8191 8192 cp = NULL; 8193 8194 /* 8195 * We have a confirmed client, now check for an 8196 * unconfimred entry 8197 */ 8198 if (cp_confirmed) { 8199 /* If creds don't match then client identifier is inuse */ 8200 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { 8201 rfs4_cbinfo_t *cbp; 8202 /* 8203 * Some one else has established this client 8204 * id. Try and say * who they are. We will use 8205 * the call back address supplied by * the 8206 * first client. 8207 */ 8208 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8209 8210 addr = netid = NULL; 8211 8212 cbp = &cp_confirmed->rc_cbinfo; 8213 if (cbp->cb_callback.cb_location.r_addr && 8214 cbp->cb_callback.cb_location.r_netid) { 8215 cb_client4 *cbcp = &cbp->cb_callback; 8216 8217 len = strlen(cbcp->cb_location.r_addr)+1; 8218 addr = kmem_alloc(len, KM_SLEEP); 8219 bcopy(cbcp->cb_location.r_addr, addr, len); 8220 len = strlen(cbcp->cb_location.r_netid)+1; 8221 netid = kmem_alloc(len, KM_SLEEP); 8222 bcopy(cbcp->cb_location.r_netid, netid, len); 8223 } 8224 8225 res->SETCLIENTID4res_u.client_using.r_addr = addr; 8226 res->SETCLIENTID4res_u.client_using.r_netid = netid; 8227 8228 rfs4_client_rele(cp_confirmed); 8229 } 8230 8231 /* 8232 * Confirmed, creds match, and verifier matches; must 8233 * be an update of the callback info 8234 */ 8235 if (cp_confirmed->rc_nfs_client.verifier == 8236 args->client.verifier) { 8237 /* Setup callback information */ 8238 rfs4_client_setcb(cp_confirmed, &args->callback, 8239 args->callback_ident); 8240 8241 /* everything okay -- move ahead */ 8242 *cs->statusp = res->status = NFS4_OK; 8243 res->SETCLIENTID4res_u.resok4.clientid = 8244 cp_confirmed->rc_clientid; 8245 8246 /* update the confirm_verifier and return it */ 8247 rfs4_client_scv_next(cp_confirmed); 8248 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8249 cp_confirmed->rc_confirm_verf; 8250 8251 rfs4_client_rele(cp_confirmed); 8252 goto out; 8253 } 8254 8255 /* 8256 * Creds match but the verifier doesn't. Must search 8257 * for an unconfirmed client that would be replaced by 8258 * this request. 8259 */ 8260 create = FALSE; 8261 cp_unconfirmed = rfs4_findclient(&args->client, &create, 8262 cp_confirmed); 8263 } 8264 8265 /* 8266 * At this point, we have taken care of the brand new client 8267 * struct, INUSE case, update of an existing, and confirmed 8268 * client struct. 8269 */ 8270 8271 /* 8272 * check to see if things have changed while we originally 8273 * picked up the client struct. If they have, then return and 8274 * retry the processing of this SETCLIENTID request. 8275 */ 8276 if (cp_unconfirmed) { 8277 rfs4_dbe_lock(cp_unconfirmed->rc_dbe); 8278 if (!cp_unconfirmed->rc_need_confirm) { 8279 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8280 rfs4_client_rele(cp_unconfirmed); 8281 if (cp_confirmed) 8282 rfs4_client_rele(cp_confirmed); 8283 goto retry; 8284 } 8285 /* do away with the old unconfirmed one */ 8286 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); 8287 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); 8288 rfs4_client_rele(cp_unconfirmed); 8289 cp_unconfirmed = NULL; 8290 } 8291 8292 /* 8293 * This search will temporarily hide the confirmed client 8294 * struct while a new client struct is created as the 8295 * unconfirmed one. 8296 */ 8297 create = TRUE; 8298 newcp = rfs4_findclient(&args->client, &create, cp_confirmed); 8299 8300 ASSERT(newcp != NULL); 8301 8302 if (newcp == NULL) { 8303 *cs->statusp = res->status = NFS4ERR_SERVERFAULT; 8304 rfs4_client_rele(cp_confirmed); 8305 goto out; 8306 } 8307 8308 /* 8309 * If one was not created, then a similar request must be in 8310 * process so release and start over with this one 8311 */ 8312 if (create != TRUE) { 8313 rfs4_client_rele(newcp); 8314 if (cp_confirmed) 8315 rfs4_client_rele(cp_confirmed); 8316 goto retry; 8317 } 8318 8319 *cs->statusp = res->status = NFS4_OK; 8320 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; 8321 res->SETCLIENTID4res_u.resok4.setclientid_confirm = 8322 newcp->rc_confirm_verf; 8323 /* Setup callback information; CB_NULL confirmation later */ 8324 rfs4_client_setcb(newcp, &args->callback, args->callback_ident); 8325 8326 newcp->rc_cp_confirmed = cp_confirmed; 8327 8328 rfs4_client_rele(newcp); 8329 8330 out: 8331 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, 8332 SETCLIENTID4res *, res); 8333 } 8334 8335 /*ARGSUSED*/ 8336 void 8337 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, 8338 struct svc_req *req, struct compound_state *cs) 8339 { 8340 SETCLIENTID_CONFIRM4args *args = 8341 &argop->nfs_argop4_u.opsetclientid_confirm; 8342 SETCLIENTID_CONFIRM4res *res = 8343 &resop->nfs_resop4_u.opsetclientid_confirm; 8344 rfs4_client_t *cp, *cptoclose = NULL; 8345 8346 DTRACE_NFSV4_2(op__setclientid__confirm__start, 8347 struct compound_state *, cs, 8348 SETCLIENTID_CONFIRM4args *, args); 8349 8350 *cs->statusp = res->status = NFS4_OK; 8351 8352 cp = rfs4_findclient_by_id(args->clientid, TRUE); 8353 8354 if (cp == NULL) { 8355 *cs->statusp = res->status = 8356 rfs4_check_clientid(&args->clientid, 1); 8357 goto out; 8358 } 8359 8360 if (!creds_ok(cp, req, cs)) { 8361 *cs->statusp = res->status = NFS4ERR_CLID_INUSE; 8362 rfs4_client_rele(cp); 8363 goto out; 8364 } 8365 8366 /* If the verifier doesn't match, the record doesn't match */ 8367 if (cp->rc_confirm_verf != args->setclientid_confirm) { 8368 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; 8369 rfs4_client_rele(cp); 8370 goto out; 8371 } 8372 8373 rfs4_dbe_lock(cp->rc_dbe); 8374 cp->rc_need_confirm = FALSE; 8375 if (cp->rc_cp_confirmed) { 8376 cptoclose = cp->rc_cp_confirmed; 8377 cptoclose->rc_ss_remove = 1; 8378 cp->rc_cp_confirmed = NULL; 8379 } 8380 8381 /* 8382 * Update the client's associated server instance, if it's changed 8383 * since the client was created. 8384 */ 8385 if (rfs4_servinst(cp) != rfs4_cur_servinst) 8386 rfs4_servinst_assign(cp, rfs4_cur_servinst); 8387 8388 /* 8389 * Record clientid in stable storage. 8390 * Must be done after server instance has been assigned. 8391 */ 8392 rfs4_ss_clid(cp); 8393 8394 rfs4_dbe_unlock(cp->rc_dbe); 8395 8396 if (cptoclose) 8397 /* don't need to rele, client_close does it */ 8398 rfs4_client_close(cptoclose); 8399 8400 /* If needed, initiate CB_NULL call for callback path */ 8401 rfs4_deleg_cb_check(cp); 8402 rfs4_update_lease(cp); 8403 8404 /* 8405 * Check to see if client can perform reclaims 8406 */ 8407 rfs4_ss_chkclid(cp); 8408 8409 rfs4_client_rele(cp); 8410 8411 out: 8412 DTRACE_NFSV4_2(op__setclientid__confirm__done, 8413 struct compound_state *, cs, 8414 SETCLIENTID_CONFIRM4 *, res); 8415 } 8416 8417 8418 /*ARGSUSED*/ 8419 void 8420 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, 8421 struct svc_req *req, struct compound_state *cs) 8422 { 8423 CLOSE4args *args = &argop->nfs_argop4_u.opclose; 8424 CLOSE4res *resp = &resop->nfs_resop4_u.opclose; 8425 rfs4_state_t *sp; 8426 nfsstat4 status; 8427 8428 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, 8429 CLOSE4args *, args); 8430 8431 if (cs->vp == NULL) { 8432 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8433 goto out; 8434 } 8435 8436 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); 8437 if (status != NFS4_OK) { 8438 *cs->statusp = resp->status = status; 8439 goto out; 8440 } 8441 8442 /* Ensure specified filehandle matches */ 8443 if (cs->vp != sp->rs_finfo->rf_vp) { 8444 rfs4_state_rele(sp); 8445 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8446 goto out; 8447 } 8448 8449 /* hold off other access to open_owner while we tinker */ 8450 rfs4_sw_enter(&sp->rs_owner->ro_sw); 8451 8452 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { 8453 case NFS4_CHECK_STATEID_OKAY: 8454 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8455 resop) != NFS4_CHKSEQ_OKAY) { 8456 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8457 goto end; 8458 } 8459 break; 8460 case NFS4_CHECK_STATEID_OLD: 8461 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8462 goto end; 8463 case NFS4_CHECK_STATEID_BAD: 8464 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8465 goto end; 8466 case NFS4_CHECK_STATEID_EXPIRED: 8467 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 8468 goto end; 8469 case NFS4_CHECK_STATEID_CLOSED: 8470 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 8471 goto end; 8472 case NFS4_CHECK_STATEID_UNCONFIRMED: 8473 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 8474 goto end; 8475 case NFS4_CHECK_STATEID_REPLAY: 8476 /* Check the sequence id for the open owner */ 8477 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, 8478 resop)) { 8479 case NFS4_CHKSEQ_OKAY: 8480 /* 8481 * This is replayed stateid; if seqid matches 8482 * next expected, then client is using wrong seqid. 8483 */ 8484 /* FALL THROUGH */ 8485 case NFS4_CHKSEQ_BAD: 8486 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 8487 goto end; 8488 case NFS4_CHKSEQ_REPLAY: 8489 /* 8490 * Note this case is the duplicate case so 8491 * resp->status is already set. 8492 */ 8493 *cs->statusp = resp->status; 8494 rfs4_update_lease(sp->rs_owner->ro_client); 8495 goto end; 8496 } 8497 break; 8498 default: 8499 ASSERT(FALSE); 8500 break; 8501 } 8502 8503 rfs4_dbe_lock(sp->rs_dbe); 8504 8505 /* Update the stateid. */ 8506 next_stateid(&sp->rs_stateid); 8507 resp->open_stateid = sp->rs_stateid.stateid; 8508 8509 rfs4_dbe_unlock(sp->rs_dbe); 8510 8511 rfs4_update_lease(sp->rs_owner->ro_client); 8512 rfs4_update_open_sequence(sp->rs_owner); 8513 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 8514 8515 rfs4_state_close(sp, FALSE, FALSE, cs->cr); 8516 8517 *cs->statusp = resp->status = status; 8518 8519 end: 8520 rfs4_sw_exit(&sp->rs_owner->ro_sw); 8521 rfs4_state_rele(sp); 8522 out: 8523 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, 8524 CLOSE4res *, resp); 8525 } 8526 8527 /* 8528 * Manage the counts on the file struct and close all file locks 8529 */ 8530 /*ARGSUSED*/ 8531 void 8532 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, 8533 bool_t close_of_client) 8534 { 8535 rfs4_file_t *fp = sp->rs_finfo; 8536 rfs4_lo_state_t *lsp; 8537 int fflags = 0; 8538 8539 /* 8540 * If this call is part of the larger closing down of client 8541 * state then it is just easier to release all locks 8542 * associated with this client instead of going through each 8543 * individual file and cleaning locks there. 8544 */ 8545 if (close_of_client) { 8546 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && 8547 !list_is_empty(&sp->rs_lostatelist) && 8548 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { 8549 /* Is the PxFS kernel module loaded? */ 8550 if (lm_remove_file_locks != NULL) { 8551 int new_sysid; 8552 8553 /* Encode the cluster nodeid in new sysid */ 8554 new_sysid = sp->rs_owner->ro_client->rc_sysidt; 8555 lm_set_nlmid_flk(&new_sysid); 8556 8557 /* 8558 * This PxFS routine removes file locks for a 8559 * client over all nodes of a cluster. 8560 */ 8561 NFS4_DEBUG(rfs4_debug, (CE_NOTE, 8562 "lm_remove_file_locks(sysid=0x%x)\n", 8563 new_sysid)); 8564 (*lm_remove_file_locks)(new_sysid); 8565 } else { 8566 struct flock64 flk; 8567 8568 /* Release all locks for this client */ 8569 flk.l_type = F_UNLKSYS; 8570 flk.l_whence = 0; 8571 flk.l_start = 0; 8572 flk.l_len = 0; 8573 flk.l_sysid = 8574 sp->rs_owner->ro_client->rc_sysidt; 8575 flk.l_pid = 0; 8576 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, 8577 &flk, F_REMOTELOCK | FREAD | FWRITE, 8578 (u_offset_t)0, NULL, CRED(), NULL); 8579 } 8580 8581 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; 8582 } 8583 } 8584 8585 /* 8586 * Release all locks on this file by this lock owner or at 8587 * least mark the locks as having been released 8588 */ 8589 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; 8590 lsp = list_next(&sp->rs_lostatelist, lsp)) { 8591 lsp->rls_locks_cleaned = TRUE; 8592 8593 /* Was this already taken care of above? */ 8594 if (!close_of_client && 8595 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8596 (void) cleanlocks(sp->rs_finfo->rf_vp, 8597 lsp->rls_locker->rl_pid, 8598 lsp->rls_locker->rl_client->rc_sysidt); 8599 } 8600 8601 /* 8602 * Release any shrlocks associated with this open state ID. 8603 * This must be done before the rfs4_state gets marked closed. 8604 */ 8605 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) 8606 (void) rfs4_unshare(sp); 8607 8608 if (sp->rs_open_access) { 8609 rfs4_dbe_lock(fp->rf_dbe); 8610 8611 /* 8612 * Decrement the count for each access and deny bit that this 8613 * state has contributed to the file. 8614 * If the file counts go to zero 8615 * clear the appropriate bit in the appropriate mask. 8616 */ 8617 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { 8618 fp->rf_access_read--; 8619 fflags |= FREAD; 8620 if (fp->rf_access_read == 0) 8621 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; 8622 } 8623 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { 8624 fp->rf_access_write--; 8625 fflags |= FWRITE; 8626 if (fp->rf_access_write == 0) 8627 fp->rf_share_access &= 8628 ~OPEN4_SHARE_ACCESS_WRITE; 8629 } 8630 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { 8631 fp->rf_deny_read--; 8632 if (fp->rf_deny_read == 0) 8633 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; 8634 } 8635 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { 8636 fp->rf_deny_write--; 8637 if (fp->rf_deny_write == 0) 8638 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; 8639 } 8640 8641 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); 8642 8643 rfs4_dbe_unlock(fp->rf_dbe); 8644 8645 sp->rs_open_access = 0; 8646 sp->rs_open_deny = 0; 8647 } 8648 } 8649 8650 /* 8651 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. 8652 */ 8653 static nfsstat4 8654 lock_denied(LOCK4denied *dp, struct flock64 *flk) 8655 { 8656 rfs4_lockowner_t *lo; 8657 rfs4_client_t *cp; 8658 uint32_t len; 8659 8660 lo = rfs4_findlockowner_by_pid(flk->l_pid); 8661 if (lo != NULL) { 8662 cp = lo->rl_client; 8663 if (rfs4_lease_expired(cp)) { 8664 rfs4_lockowner_rele(lo); 8665 rfs4_dbe_hold(cp->rc_dbe); 8666 rfs4_client_close(cp); 8667 return (NFS4ERR_EXPIRED); 8668 } 8669 dp->owner.clientid = lo->rl_owner.clientid; 8670 len = lo->rl_owner.owner_len; 8671 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8672 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); 8673 dp->owner.owner_len = len; 8674 rfs4_lockowner_rele(lo); 8675 goto finish; 8676 } 8677 8678 /* 8679 * Its not a NFS4 lock. We take advantage that the upper 32 bits 8680 * of the client id contain the boot time for a NFS4 lock. So we 8681 * fabricate and identity by setting clientid to the sysid, and 8682 * the lock owner to the pid. 8683 */ 8684 dp->owner.clientid = flk->l_sysid; 8685 len = sizeof (pid_t); 8686 dp->owner.owner_len = len; 8687 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); 8688 bcopy(&flk->l_pid, dp->owner.owner_val, len); 8689 finish: 8690 dp->offset = flk->l_start; 8691 dp->length = flk->l_len; 8692 8693 if (flk->l_type == F_RDLCK) 8694 dp->locktype = READ_LT; 8695 else if (flk->l_type == F_WRLCK) 8696 dp->locktype = WRITE_LT; 8697 else 8698 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ 8699 8700 return (NFS4_OK); 8701 } 8702 8703 /* 8704 * The NFSv4.0 LOCK operation does not support the blocking lock (at the 8705 * NFSv4.0 protocol level) so the client needs to resend the LOCK request in a 8706 * case the lock is denied by the NFSv4.0 server. NFSv4.0 clients are prepared 8707 * for that (obviously); they are sending the LOCK requests with some delays 8708 * between the attempts. See nfs4frlock() and nfs4_block_and_wait() for the 8709 * locking and delay implementation at the client side. 8710 * 8711 * To make the life of the clients easier, the NFSv4.0 server tries to do some 8712 * fast retries on its own (the for loop below) in a hope the lock will be 8713 * available soon. And if not, the client won't need to resend the LOCK 8714 * requests so fast to check the lock availability. This basically saves some 8715 * network traffic and tries to make sure the client gets the lock ASAP. 8716 */ 8717 static int 8718 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) 8719 { 8720 int error; 8721 struct flock64 flk; 8722 int i; 8723 clock_t delaytime; 8724 int cmd; 8725 int spin_cnt = 0; 8726 8727 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 8728 retry: 8729 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); 8730 8731 for (i = 0; i < rfs4_maxlock_tries; i++) { 8732 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); 8733 error = VOP_FRLOCK(vp, cmd, 8734 flock, flag, (u_offset_t)0, NULL, cred, NULL); 8735 8736 if (error != EAGAIN && error != EACCES) 8737 break; 8738 8739 if (i < rfs4_maxlock_tries - 1) { 8740 delay(delaytime); 8741 delaytime *= 2; 8742 } 8743 } 8744 8745 if (error == EAGAIN || error == EACCES) { 8746 /* Get the owner of the lock */ 8747 flk = *flock; 8748 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); 8749 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 0, NULL, cred, 8750 NULL) == 0) { 8751 /* 8752 * There's a race inherent in the current VOP_FRLOCK 8753 * design where: 8754 * a: "other guy" takes a lock that conflicts with a 8755 * lock we want 8756 * b: we attempt to take our lock (non-blocking) and 8757 * the attempt fails. 8758 * c: "other guy" releases the conflicting lock 8759 * d: we ask what lock conflicts with the lock we want, 8760 * getting F_UNLCK (no lock blocks us) 8761 * 8762 * If we retry the non-blocking lock attempt in this 8763 * case (restart at step 'b') there's some possibility 8764 * that many such attempts might fail. However a test 8765 * designed to actually provoke this race shows that 8766 * the vast majority of cases require no retry, and 8767 * only a few took as many as three retries. Here's 8768 * the test outcome: 8769 * 8770 * number of retries how many times we needed 8771 * that many retries 8772 * 0 79461 8773 * 1 862 8774 * 2 49 8775 * 3 5 8776 * 8777 * Given those empirical results, we arbitrarily limit 8778 * the retry count to ten. 8779 * 8780 * If we actually make to ten retries and give up, 8781 * nothing catastrophic happens, but we're unable to 8782 * return the information about the conflicting lock to 8783 * the NFS client. That's an acceptable trade off vs. 8784 * letting this retry loop run forever. 8785 */ 8786 if (flk.l_type == F_UNLCK) { 8787 if (spin_cnt++ < 10) { 8788 /* No longer locked, retry */ 8789 goto retry; 8790 } 8791 } else { 8792 *flock = flk; 8793 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", 8794 F_GETLK, &flk); 8795 } 8796 } 8797 } 8798 8799 return (error); 8800 } 8801 8802 /*ARGSUSED*/ 8803 static nfsstat4 8804 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, 8805 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) 8806 { 8807 nfsstat4 status; 8808 rfs4_lockowner_t *lo = lsp->rls_locker; 8809 rfs4_state_t *sp = lsp->rls_state; 8810 struct flock64 flock; 8811 int16_t ltype; 8812 int flag; 8813 int error; 8814 sysid_t sysid; 8815 LOCK4res *lres; 8816 vnode_t *vp; 8817 8818 if (rfs4_lease_expired(lo->rl_client)) { 8819 return (NFS4ERR_EXPIRED); 8820 } 8821 8822 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 8823 return (status); 8824 8825 /* Check for zero length. To lock to end of file use all ones for V4 */ 8826 if (length == 0) 8827 return (NFS4ERR_INVAL); 8828 else if (length == (length4)(~0)) 8829 length = 0; /* Posix to end of file */ 8830 8831 retry: 8832 rfs4_dbe_lock(sp->rs_dbe); 8833 if (sp->rs_closed == TRUE) { 8834 rfs4_dbe_unlock(sp->rs_dbe); 8835 return (NFS4ERR_OLD_STATEID); 8836 } 8837 8838 if (resop->resop != OP_LOCKU) { 8839 switch (locktype) { 8840 case READ_LT: 8841 case READW_LT: 8842 if ((sp->rs_share_access 8843 & OPEN4_SHARE_ACCESS_READ) == 0) { 8844 rfs4_dbe_unlock(sp->rs_dbe); 8845 8846 return (NFS4ERR_OPENMODE); 8847 } 8848 ltype = F_RDLCK; 8849 break; 8850 case WRITE_LT: 8851 case WRITEW_LT: 8852 if ((sp->rs_share_access 8853 & OPEN4_SHARE_ACCESS_WRITE) == 0) { 8854 rfs4_dbe_unlock(sp->rs_dbe); 8855 8856 return (NFS4ERR_OPENMODE); 8857 } 8858 ltype = F_WRLCK; 8859 break; 8860 } 8861 } else 8862 ltype = F_UNLCK; 8863 8864 flock.l_type = ltype; 8865 flock.l_whence = 0; /* SEEK_SET */ 8866 flock.l_start = offset; 8867 flock.l_len = length; 8868 flock.l_sysid = sysid; 8869 flock.l_pid = lsp->rls_locker->rl_pid; 8870 8871 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 8872 if (flock.l_len < 0 || flock.l_start < 0) { 8873 rfs4_dbe_unlock(sp->rs_dbe); 8874 return (NFS4ERR_INVAL); 8875 } 8876 8877 /* 8878 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and 8879 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. 8880 */ 8881 flag = (int)sp->rs_share_access | F_REMOTELOCK; 8882 8883 vp = sp->rs_finfo->rf_vp; 8884 VN_HOLD(vp); 8885 8886 /* 8887 * We need to unlock sp before we call the underlying filesystem to 8888 * acquire the file lock. 8889 */ 8890 rfs4_dbe_unlock(sp->rs_dbe); 8891 8892 error = setlock(vp, &flock, flag, cred); 8893 8894 /* 8895 * Make sure the file is still open. In a case the file was closed in 8896 * the meantime, clean the lock we acquired using the setlock() call 8897 * above, and return the appropriate error. 8898 */ 8899 rfs4_dbe_lock(sp->rs_dbe); 8900 if (sp->rs_closed == TRUE) { 8901 cleanlocks(vp, lsp->rls_locker->rl_pid, sysid); 8902 rfs4_dbe_unlock(sp->rs_dbe); 8903 8904 VN_RELE(vp); 8905 8906 return (NFS4ERR_OLD_STATEID); 8907 } 8908 rfs4_dbe_unlock(sp->rs_dbe); 8909 8910 VN_RELE(vp); 8911 8912 if (error == 0) { 8913 rfs4_dbe_lock(lsp->rls_dbe); 8914 next_stateid(&lsp->rls_lockid); 8915 rfs4_dbe_unlock(lsp->rls_dbe); 8916 } 8917 8918 /* 8919 * N.B. We map error values to nfsv4 errors. This is differrent 8920 * than puterrno4 routine. 8921 */ 8922 switch (error) { 8923 case 0: 8924 status = NFS4_OK; 8925 break; 8926 case EAGAIN: 8927 case EACCES: /* Old value */ 8928 /* Can only get here if op is OP_LOCK */ 8929 ASSERT(resop->resop == OP_LOCK); 8930 lres = &resop->nfs_resop4_u.oplock; 8931 status = NFS4ERR_DENIED; 8932 if (lock_denied(&lres->LOCK4res_u.denied, &flock) 8933 == NFS4ERR_EXPIRED) 8934 goto retry; 8935 break; 8936 case ENOLCK: 8937 status = NFS4ERR_DELAY; 8938 break; 8939 case EOVERFLOW: 8940 status = NFS4ERR_INVAL; 8941 break; 8942 case EINVAL: 8943 status = NFS4ERR_NOTSUPP; 8944 break; 8945 default: 8946 status = NFS4ERR_SERVERFAULT; 8947 break; 8948 } 8949 8950 return (status); 8951 } 8952 8953 /*ARGSUSED*/ 8954 void 8955 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, 8956 struct svc_req *req, struct compound_state *cs) 8957 { 8958 LOCK4args *args = &argop->nfs_argop4_u.oplock; 8959 LOCK4res *resp = &resop->nfs_resop4_u.oplock; 8960 nfsstat4 status; 8961 stateid4 *stateid; 8962 rfs4_lockowner_t *lo; 8963 rfs4_client_t *cp; 8964 rfs4_state_t *sp = NULL; 8965 rfs4_lo_state_t *lsp = NULL; 8966 bool_t ls_sw_held = FALSE; 8967 bool_t create = TRUE; 8968 bool_t lcreate = TRUE; 8969 bool_t dup_lock = FALSE; 8970 int rc; 8971 8972 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, 8973 LOCK4args *, args); 8974 8975 if (cs->vp == NULL) { 8976 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 8977 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8978 cs, LOCK4res *, resp); 8979 return; 8980 } 8981 8982 if (args->locker.new_lock_owner) { 8983 /* Create a new lockowner for this instance */ 8984 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; 8985 8986 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); 8987 8988 stateid = &olo->open_stateid; 8989 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); 8990 if (status != NFS4_OK) { 8991 NFS4_DEBUG(rfs4_debug, 8992 (CE_NOTE, "Get state failed in lock %d", status)); 8993 *cs->statusp = resp->status = status; 8994 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 8995 cs, LOCK4res *, resp); 8996 return; 8997 } 8998 8999 /* Ensure specified filehandle matches */ 9000 if (cs->vp != sp->rs_finfo->rf_vp) { 9001 rfs4_state_rele(sp); 9002 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9003 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9004 cs, LOCK4res *, resp); 9005 return; 9006 } 9007 9008 /* hold off other access to open_owner while we tinker */ 9009 rfs4_sw_enter(&sp->rs_owner->ro_sw); 9010 9011 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { 9012 case NFS4_CHECK_STATEID_OLD: 9013 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9014 goto end; 9015 case NFS4_CHECK_STATEID_BAD: 9016 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9017 goto end; 9018 case NFS4_CHECK_STATEID_EXPIRED: 9019 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9020 goto end; 9021 case NFS4_CHECK_STATEID_UNCONFIRMED: 9022 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9023 goto end; 9024 case NFS4_CHECK_STATEID_CLOSED: 9025 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9026 goto end; 9027 case NFS4_CHECK_STATEID_OKAY: 9028 case NFS4_CHECK_STATEID_REPLAY: 9029 switch (rfs4_check_olo_seqid(olo->open_seqid, 9030 sp->rs_owner, resop)) { 9031 case NFS4_CHKSEQ_OKAY: 9032 if (rc == NFS4_CHECK_STATEID_OKAY) 9033 break; 9034 /* 9035 * This is replayed stateid; if seqid 9036 * matches next expected, then client 9037 * is using wrong seqid. 9038 */ 9039 /* FALLTHROUGH */ 9040 case NFS4_CHKSEQ_BAD: 9041 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9042 goto end; 9043 case NFS4_CHKSEQ_REPLAY: 9044 /* This is a duplicate LOCK request */ 9045 dup_lock = TRUE; 9046 9047 /* 9048 * For a duplicate we do not want to 9049 * create a new lockowner as it should 9050 * already exist. 9051 * Turn off the lockowner create flag. 9052 */ 9053 lcreate = FALSE; 9054 } 9055 break; 9056 } 9057 9058 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); 9059 if (lo == NULL) { 9060 NFS4_DEBUG(rfs4_debug, 9061 (CE_NOTE, "rfs4_op_lock: no lock owner")); 9062 *cs->statusp = resp->status = NFS4ERR_RESOURCE; 9063 goto end; 9064 } 9065 9066 lsp = rfs4_findlo_state_by_owner(lo, sp, &create); 9067 if (lsp == NULL) { 9068 rfs4_update_lease(sp->rs_owner->ro_client); 9069 /* 9070 * Only update theh open_seqid if this is not 9071 * a duplicate request 9072 */ 9073 if (dup_lock == FALSE) { 9074 rfs4_update_open_sequence(sp->rs_owner); 9075 } 9076 9077 NFS4_DEBUG(rfs4_debug, 9078 (CE_NOTE, "rfs4_op_lock: no state")); 9079 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; 9080 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9081 rfs4_lockowner_rele(lo); 9082 goto end; 9083 } 9084 9085 /* 9086 * This is the new_lock_owner branch and the client is 9087 * supposed to be associating a new lock_owner with 9088 * the open file at this point. If we find that a 9089 * lock_owner/state association already exists and a 9090 * successful LOCK request was returned to the client, 9091 * an error is returned to the client since this is 9092 * not appropriate. The client should be using the 9093 * existing lock_owner branch. 9094 */ 9095 if (dup_lock == FALSE && create == FALSE) { 9096 if (lsp->rls_lock_completed == TRUE) { 9097 *cs->statusp = 9098 resp->status = NFS4ERR_BAD_SEQID; 9099 rfs4_lockowner_rele(lo); 9100 goto end; 9101 } 9102 } 9103 9104 rfs4_update_lease(sp->rs_owner->ro_client); 9105 9106 /* 9107 * Only update theh open_seqid if this is not 9108 * a duplicate request 9109 */ 9110 if (dup_lock == FALSE) { 9111 rfs4_update_open_sequence(sp->rs_owner); 9112 } 9113 9114 /* 9115 * If this is a duplicate lock request, just copy the 9116 * previously saved reply and return. 9117 */ 9118 if (dup_lock == TRUE) { 9119 /* verify that lock_seqid's match */ 9120 if (lsp->rls_seqid != olo->lock_seqid) { 9121 NFS4_DEBUG(rfs4_debug, 9122 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" 9123 "lsp->seqid=%d old->seqid=%d", 9124 lsp->rls_seqid, olo->lock_seqid)); 9125 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9126 } else { 9127 rfs4_copy_reply(resop, &lsp->rls_reply); 9128 /* 9129 * Make sure to copy the just 9130 * retrieved reply status into the 9131 * overall compound status 9132 */ 9133 *cs->statusp = resp->status; 9134 } 9135 rfs4_lockowner_rele(lo); 9136 goto end; 9137 } 9138 9139 rfs4_dbe_lock(lsp->rls_dbe); 9140 9141 /* Make sure to update the lock sequence id */ 9142 lsp->rls_seqid = olo->lock_seqid; 9143 9144 NFS4_DEBUG(rfs4_debug, 9145 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); 9146 9147 /* 9148 * This is used to signify the newly created lockowner 9149 * stateid and its sequence number. The checks for 9150 * sequence number and increment don't occur on the 9151 * very first lock request for a lockowner. 9152 */ 9153 lsp->rls_skip_seqid_check = TRUE; 9154 9155 /* hold off other access to lsp while we tinker */ 9156 rfs4_sw_enter(&lsp->rls_sw); 9157 ls_sw_held = TRUE; 9158 9159 rfs4_dbe_unlock(lsp->rls_dbe); 9160 9161 rfs4_lockowner_rele(lo); 9162 } else { 9163 stateid = &args->locker.locker4_u.lock_owner.lock_stateid; 9164 /* get lsp and hold the lock on the underlying file struct */ 9165 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) 9166 != NFS4_OK) { 9167 *cs->statusp = resp->status = status; 9168 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9169 cs, LOCK4res *, resp); 9170 return; 9171 } 9172 create = FALSE; /* We didn't create lsp */ 9173 9174 /* Ensure specified filehandle matches */ 9175 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9176 rfs4_lo_state_rele(lsp, TRUE); 9177 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9178 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, 9179 cs, LOCK4res *, resp); 9180 return; 9181 } 9182 9183 /* hold off other access to lsp while we tinker */ 9184 rfs4_sw_enter(&lsp->rls_sw); 9185 ls_sw_held = TRUE; 9186 9187 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9188 /* 9189 * The stateid looks like it was okay (expected to be 9190 * the next one) 9191 */ 9192 case NFS4_CHECK_STATEID_OKAY: 9193 /* 9194 * The sequence id is now checked. Determine 9195 * if this is a replay or if it is in the 9196 * expected (next) sequence. In the case of a 9197 * replay, there are two replay conditions 9198 * that may occur. The first is the normal 9199 * condition where a LOCK is done with a 9200 * NFS4_OK response and the stateid is 9201 * updated. That case is handled below when 9202 * the stateid is identified as a REPLAY. The 9203 * second is the case where an error is 9204 * returned, like NFS4ERR_DENIED, and the 9205 * sequence number is updated but the stateid 9206 * is not updated. This second case is dealt 9207 * with here. So it may seem odd that the 9208 * stateid is okay but the sequence id is a 9209 * replay but it is okay. 9210 */ 9211 switch (rfs4_check_lock_seqid( 9212 args->locker.locker4_u.lock_owner.lock_seqid, 9213 lsp, resop)) { 9214 case NFS4_CHKSEQ_REPLAY: 9215 if (resp->status != NFS4_OK) { 9216 /* 9217 * Here is our replay and need 9218 * to verify that the last 9219 * response was an error. 9220 */ 9221 *cs->statusp = resp->status; 9222 goto end; 9223 } 9224 /* 9225 * This is done since the sequence id 9226 * looked like a replay but it didn't 9227 * pass our check so a BAD_SEQID is 9228 * returned as a result. 9229 */ 9230 /*FALLTHROUGH*/ 9231 case NFS4_CHKSEQ_BAD: 9232 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9233 goto end; 9234 case NFS4_CHKSEQ_OKAY: 9235 /* Everything looks okay move ahead */ 9236 break; 9237 } 9238 break; 9239 case NFS4_CHECK_STATEID_OLD: 9240 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9241 goto end; 9242 case NFS4_CHECK_STATEID_BAD: 9243 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9244 goto end; 9245 case NFS4_CHECK_STATEID_EXPIRED: 9246 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9247 goto end; 9248 case NFS4_CHECK_STATEID_CLOSED: 9249 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9250 goto end; 9251 case NFS4_CHECK_STATEID_REPLAY: 9252 switch (rfs4_check_lock_seqid( 9253 args->locker.locker4_u.lock_owner.lock_seqid, 9254 lsp, resop)) { 9255 case NFS4_CHKSEQ_OKAY: 9256 /* 9257 * This is a replayed stateid; if 9258 * seqid matches the next expected, 9259 * then client is using wrong seqid. 9260 */ 9261 case NFS4_CHKSEQ_BAD: 9262 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9263 goto end; 9264 case NFS4_CHKSEQ_REPLAY: 9265 rfs4_update_lease(lsp->rls_locker->rl_client); 9266 *cs->statusp = status = resp->status; 9267 goto end; 9268 } 9269 break; 9270 default: 9271 ASSERT(FALSE); 9272 break; 9273 } 9274 9275 rfs4_update_lock_sequence(lsp); 9276 rfs4_update_lease(lsp->rls_locker->rl_client); 9277 } 9278 9279 /* 9280 * NFS4 only allows locking on regular files, so 9281 * verify type of object. 9282 */ 9283 if (cs->vp->v_type != VREG) { 9284 if (cs->vp->v_type == VDIR) 9285 status = NFS4ERR_ISDIR; 9286 else 9287 status = NFS4ERR_INVAL; 9288 goto out; 9289 } 9290 9291 cp = lsp->rls_state->rs_owner->ro_client; 9292 9293 if (rfs4_clnt_in_grace(cp) && !args->reclaim) { 9294 status = NFS4ERR_GRACE; 9295 goto out; 9296 } 9297 9298 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { 9299 status = NFS4ERR_NO_GRACE; 9300 goto out; 9301 } 9302 9303 if (!rfs4_clnt_in_grace(cp) && args->reclaim) { 9304 status = NFS4ERR_NO_GRACE; 9305 goto out; 9306 } 9307 9308 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) 9309 cs->deleg = TRUE; 9310 9311 status = rfs4_do_lock(lsp, args->locktype, 9312 args->offset, args->length, cs->cr, resop); 9313 9314 out: 9315 lsp->rls_skip_seqid_check = FALSE; 9316 9317 *cs->statusp = resp->status = status; 9318 9319 if (status == NFS4_OK) { 9320 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; 9321 lsp->rls_lock_completed = TRUE; 9322 } 9323 /* 9324 * Only update the "OPEN" response here if this was a new 9325 * lock_owner 9326 */ 9327 if (sp) 9328 rfs4_update_open_resp(sp->rs_owner, resop, NULL); 9329 9330 rfs4_update_lock_resp(lsp, resop); 9331 9332 end: 9333 if (lsp) { 9334 if (ls_sw_held) 9335 rfs4_sw_exit(&lsp->rls_sw); 9336 /* 9337 * If an sp obtained, then the lsp does not represent 9338 * a lock on the file struct. 9339 */ 9340 if (sp != NULL) 9341 rfs4_lo_state_rele(lsp, FALSE); 9342 else 9343 rfs4_lo_state_rele(lsp, TRUE); 9344 } 9345 if (sp) { 9346 rfs4_sw_exit(&sp->rs_owner->ro_sw); 9347 rfs4_state_rele(sp); 9348 } 9349 9350 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, 9351 LOCK4res *, resp); 9352 } 9353 9354 /* free function for LOCK/LOCKT */ 9355 static void 9356 lock_denied_free(nfs_resop4 *resop) 9357 { 9358 LOCK4denied *dp = NULL; 9359 9360 switch (resop->resop) { 9361 case OP_LOCK: 9362 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) 9363 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; 9364 break; 9365 case OP_LOCKT: 9366 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) 9367 dp = &resop->nfs_resop4_u.oplockt.denied; 9368 break; 9369 default: 9370 break; 9371 } 9372 9373 if (dp) 9374 kmem_free(dp->owner.owner_val, dp->owner.owner_len); 9375 } 9376 9377 /*ARGSUSED*/ 9378 void 9379 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, 9380 struct svc_req *req, struct compound_state *cs) 9381 { 9382 LOCKU4args *args = &argop->nfs_argop4_u.oplocku; 9383 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; 9384 nfsstat4 status; 9385 stateid4 *stateid = &args->lock_stateid; 9386 rfs4_lo_state_t *lsp; 9387 9388 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, 9389 LOCKU4args *, args); 9390 9391 if (cs->vp == NULL) { 9392 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9393 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9394 LOCKU4res *, resp); 9395 return; 9396 } 9397 9398 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { 9399 *cs->statusp = resp->status = status; 9400 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9401 LOCKU4res *, resp); 9402 return; 9403 } 9404 9405 /* Ensure specified filehandle matches */ 9406 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { 9407 rfs4_lo_state_rele(lsp, TRUE); 9408 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9409 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9410 LOCKU4res *, resp); 9411 return; 9412 } 9413 9414 /* hold off other access to lsp while we tinker */ 9415 rfs4_sw_enter(&lsp->rls_sw); 9416 9417 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { 9418 case NFS4_CHECK_STATEID_OKAY: 9419 if (rfs4_check_lock_seqid(args->seqid, lsp, resop) 9420 != NFS4_CHKSEQ_OKAY) { 9421 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9422 goto end; 9423 } 9424 break; 9425 case NFS4_CHECK_STATEID_OLD: 9426 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9427 goto end; 9428 case NFS4_CHECK_STATEID_BAD: 9429 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; 9430 goto end; 9431 case NFS4_CHECK_STATEID_EXPIRED: 9432 *cs->statusp = resp->status = NFS4ERR_EXPIRED; 9433 goto end; 9434 case NFS4_CHECK_STATEID_CLOSED: 9435 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; 9436 goto end; 9437 case NFS4_CHECK_STATEID_REPLAY: 9438 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { 9439 case NFS4_CHKSEQ_OKAY: 9440 /* 9441 * This is a replayed stateid; if 9442 * seqid matches the next expected, 9443 * then client is using wrong seqid. 9444 */ 9445 case NFS4_CHKSEQ_BAD: 9446 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; 9447 goto end; 9448 case NFS4_CHKSEQ_REPLAY: 9449 rfs4_update_lease(lsp->rls_locker->rl_client); 9450 *cs->statusp = status = resp->status; 9451 goto end; 9452 } 9453 break; 9454 default: 9455 ASSERT(FALSE); 9456 break; 9457 } 9458 9459 rfs4_update_lock_sequence(lsp); 9460 rfs4_update_lease(lsp->rls_locker->rl_client); 9461 9462 /* 9463 * NFS4 only allows locking on regular files, so 9464 * verify type of object. 9465 */ 9466 if (cs->vp->v_type != VREG) { 9467 if (cs->vp->v_type == VDIR) 9468 status = NFS4ERR_ISDIR; 9469 else 9470 status = NFS4ERR_INVAL; 9471 goto out; 9472 } 9473 9474 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { 9475 status = NFS4ERR_GRACE; 9476 goto out; 9477 } 9478 9479 status = rfs4_do_lock(lsp, args->locktype, 9480 args->offset, args->length, cs->cr, resop); 9481 9482 out: 9483 *cs->statusp = resp->status = status; 9484 9485 if (status == NFS4_OK) 9486 resp->lock_stateid = lsp->rls_lockid.stateid; 9487 9488 rfs4_update_lock_resp(lsp, resop); 9489 9490 end: 9491 rfs4_sw_exit(&lsp->rls_sw); 9492 rfs4_lo_state_rele(lsp, TRUE); 9493 9494 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, 9495 LOCKU4res *, resp); 9496 } 9497 9498 /* 9499 * LOCKT is a best effort routine, the client can not be guaranteed that 9500 * the status return is still in effect by the time the reply is received. 9501 * They are numerous race conditions in this routine, but we are not required 9502 * and can not be accurate. 9503 */ 9504 /*ARGSUSED*/ 9505 void 9506 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, 9507 struct svc_req *req, struct compound_state *cs) 9508 { 9509 LOCKT4args *args = &argop->nfs_argop4_u.oplockt; 9510 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; 9511 rfs4_lockowner_t *lo; 9512 rfs4_client_t *cp; 9513 bool_t create = FALSE; 9514 struct flock64 flk; 9515 int error; 9516 int flag = FREAD | FWRITE; 9517 int ltype; 9518 length4 posix_length; 9519 sysid_t sysid; 9520 pid_t pid; 9521 9522 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, 9523 LOCKT4args *, args); 9524 9525 if (cs->vp == NULL) { 9526 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; 9527 goto out; 9528 } 9529 9530 /* 9531 * NFS4 only allows locking on regular files, so 9532 * verify type of object. 9533 */ 9534 if (cs->vp->v_type != VREG) { 9535 if (cs->vp->v_type == VDIR) 9536 *cs->statusp = resp->status = NFS4ERR_ISDIR; 9537 else 9538 *cs->statusp = resp->status = NFS4ERR_INVAL; 9539 goto out; 9540 } 9541 9542 /* 9543 * Check out the clientid to ensure the server knows about it 9544 * so that we correctly inform the client of a server reboot. 9545 */ 9546 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) 9547 == NULL) { 9548 *cs->statusp = resp->status = 9549 rfs4_check_clientid(&args->owner.clientid, 0); 9550 goto out; 9551 } 9552 if (rfs4_lease_expired(cp)) { 9553 rfs4_client_close(cp); 9554 /* 9555 * Protocol doesn't allow returning NFS4ERR_STALE as 9556 * other operations do on this check so STALE_CLIENTID 9557 * is returned instead 9558 */ 9559 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; 9560 goto out; 9561 } 9562 9563 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { 9564 *cs->statusp = resp->status = NFS4ERR_GRACE; 9565 rfs4_client_rele(cp); 9566 goto out; 9567 } 9568 rfs4_client_rele(cp); 9569 9570 resp->status = NFS4_OK; 9571 9572 switch (args->locktype) { 9573 case READ_LT: 9574 case READW_LT: 9575 ltype = F_RDLCK; 9576 break; 9577 case WRITE_LT: 9578 case WRITEW_LT: 9579 ltype = F_WRLCK; 9580 break; 9581 } 9582 9583 posix_length = args->length; 9584 /* Check for zero length. To lock to end of file use all ones for V4 */ 9585 if (posix_length == 0) { 9586 *cs->statusp = resp->status = NFS4ERR_INVAL; 9587 goto out; 9588 } else if (posix_length == (length4)(~0)) { 9589 posix_length = 0; /* Posix to end of file */ 9590 } 9591 9592 /* Find or create a lockowner */ 9593 lo = rfs4_findlockowner(&args->owner, &create); 9594 9595 if (lo) { 9596 pid = lo->rl_pid; 9597 if ((resp->status = 9598 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) 9599 goto err; 9600 } else { 9601 pid = 0; 9602 sysid = lockt_sysid; 9603 } 9604 retry: 9605 flk.l_type = ltype; 9606 flk.l_whence = 0; /* SEEK_SET */ 9607 flk.l_start = args->offset; 9608 flk.l_len = posix_length; 9609 flk.l_sysid = sysid; 9610 flk.l_pid = pid; 9611 flag |= F_REMOTELOCK; 9612 9613 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); 9614 9615 /* Note that length4 is uint64_t but l_len and l_start are off64_t */ 9616 if (flk.l_len < 0 || flk.l_start < 0) { 9617 resp->status = NFS4ERR_INVAL; 9618 goto err; 9619 } 9620 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, 9621 NULL, cs->cr, NULL); 9622 9623 /* 9624 * N.B. We map error values to nfsv4 errors. This is differrent 9625 * than puterrno4 routine. 9626 */ 9627 switch (error) { 9628 case 0: 9629 if (flk.l_type == F_UNLCK) 9630 resp->status = NFS4_OK; 9631 else { 9632 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) 9633 goto retry; 9634 resp->status = NFS4ERR_DENIED; 9635 } 9636 break; 9637 case EOVERFLOW: 9638 resp->status = NFS4ERR_INVAL; 9639 break; 9640 case EINVAL: 9641 resp->status = NFS4ERR_NOTSUPP; 9642 break; 9643 default: 9644 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", 9645 error); 9646 resp->status = NFS4ERR_SERVERFAULT; 9647 break; 9648 } 9649 9650 err: 9651 if (lo) 9652 rfs4_lockowner_rele(lo); 9653 *cs->statusp = resp->status; 9654 out: 9655 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, 9656 LOCKT4res *, resp); 9657 } 9658 9659 int 9660 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) 9661 { 9662 int err; 9663 int cmd; 9664 vnode_t *vp; 9665 struct shrlock shr; 9666 struct shr_locowner shr_loco; 9667 int fflags = 0; 9668 9669 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9670 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9671 9672 if (sp->rs_closed) 9673 return (NFS4ERR_OLD_STATEID); 9674 9675 vp = sp->rs_finfo->rf_vp; 9676 ASSERT(vp); 9677 9678 shr.s_access = shr.s_deny = 0; 9679 9680 if (access & OPEN4_SHARE_ACCESS_READ) { 9681 fflags |= FREAD; 9682 shr.s_access |= F_RDACC; 9683 } 9684 if (access & OPEN4_SHARE_ACCESS_WRITE) { 9685 fflags |= FWRITE; 9686 shr.s_access |= F_WRACC; 9687 } 9688 ASSERT(shr.s_access); 9689 9690 if (deny & OPEN4_SHARE_DENY_READ) 9691 shr.s_deny |= F_RDDNY; 9692 if (deny & OPEN4_SHARE_DENY_WRITE) 9693 shr.s_deny |= F_WRDNY; 9694 9695 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9696 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9697 shr_loco.sl_pid = shr.s_pid; 9698 shr_loco.sl_id = shr.s_sysid; 9699 shr.s_owner = (caddr_t)&shr_loco; 9700 shr.s_own_len = sizeof (shr_loco); 9701 9702 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; 9703 9704 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); 9705 if (err != 0) { 9706 if (err == EAGAIN) 9707 err = NFS4ERR_SHARE_DENIED; 9708 else 9709 err = puterrno4(err); 9710 return (err); 9711 } 9712 9713 sp->rs_share_access |= access; 9714 sp->rs_share_deny |= deny; 9715 9716 return (0); 9717 } 9718 9719 int 9720 rfs4_unshare(rfs4_state_t *sp) 9721 { 9722 int err; 9723 struct shrlock shr; 9724 struct shr_locowner shr_loco; 9725 9726 ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); 9727 9728 if (sp->rs_closed || sp->rs_share_access == 0) 9729 return (0); 9730 9731 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); 9732 ASSERT(sp->rs_finfo->rf_vp); 9733 9734 shr.s_access = shr.s_deny = 0; 9735 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); 9736 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; 9737 shr_loco.sl_pid = shr.s_pid; 9738 shr_loco.sl_id = shr.s_sysid; 9739 shr.s_owner = (caddr_t)&shr_loco; 9740 shr.s_own_len = sizeof (shr_loco); 9741 9742 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), 9743 NULL); 9744 if (err != 0) { 9745 err = puterrno4(err); 9746 return (err); 9747 } 9748 9749 sp->rs_share_access = 0; 9750 sp->rs_share_deny = 0; 9751 9752 return (0); 9753 9754 } 9755 9756 static int 9757 rdma_setup_read_data4(READ4args *args, READ4res *rok) 9758 { 9759 struct clist *wcl; 9760 count4 count = rok->data_len; 9761 int wlist_len; 9762 9763 wcl = args->wlist; 9764 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { 9765 return (FALSE); 9766 } 9767 wcl = args->wlist; 9768 rok->wlist_len = wlist_len; 9769 rok->wlist = wcl; 9770 return (TRUE); 9771 } 9772 9773 /* tunable to disable server referrals */ 9774 int rfs4_no_referrals = 0; 9775 9776 /* 9777 * Find an NFS record in reparse point data. 9778 * Returns 0 for success and <0 or an errno value on failure. 9779 */ 9780 int 9781 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) 9782 { 9783 int err; 9784 char *stype, *val; 9785 nvlist_t *nvl; 9786 nvpair_t *curr; 9787 9788 if ((nvl = reparse_init()) == NULL) 9789 return (-1); 9790 9791 if ((err = reparse_vnode_parse(vp, nvl)) != 0) { 9792 reparse_free(nvl); 9793 return (err); 9794 } 9795 9796 curr = NULL; 9797 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { 9798 if ((stype = nvpair_name(curr)) == NULL) { 9799 reparse_free(nvl); 9800 return (-2); 9801 } 9802 if (strncasecmp(stype, "NFS", 3) == 0) 9803 break; 9804 } 9805 9806 if ((curr == NULL) || 9807 (nvpair_value_string(curr, &val))) { 9808 reparse_free(nvl); 9809 return (-3); 9810 } 9811 *nvlp = nvl; 9812 *svcp = stype; 9813 *datap = val; 9814 return (0); 9815 } 9816 9817 int 9818 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) 9819 { 9820 nvlist_t *nvl; 9821 char *s, *d; 9822 9823 if (rfs4_no_referrals != 0) 9824 return (B_FALSE); 9825 9826 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9827 return (B_FALSE); 9828 9829 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) 9830 return (B_FALSE); 9831 9832 reparse_free(nvl); 9833 9834 return (B_TRUE); 9835 } 9836 9837 /* 9838 * There is a user-level copy of this routine in ref_subr.c. 9839 * Changes should be kept in sync. 9840 */ 9841 static int 9842 nfs4_create_components(char *path, component4 *comp4) 9843 { 9844 int slen, plen, ncomp; 9845 char *ori_path, *nxtc, buf[MAXNAMELEN]; 9846 9847 if (path == NULL) 9848 return (0); 9849 9850 plen = strlen(path) + 1; /* include the terminator */ 9851 ori_path = path; 9852 ncomp = 0; 9853 9854 /* count number of components in the path */ 9855 for (nxtc = path; nxtc < ori_path + plen; nxtc++) { 9856 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { 9857 if ((slen = nxtc - path) == 0) { 9858 path = nxtc + 1; 9859 continue; 9860 } 9861 9862 if (comp4 != NULL) { 9863 bcopy(path, buf, slen); 9864 buf[slen] = '\0'; 9865 (void) str_to_utf8(buf, &comp4[ncomp]); 9866 } 9867 9868 ncomp++; /* 1 valid component */ 9869 path = nxtc + 1; 9870 } 9871 if (*nxtc == '\0' || *nxtc == '\n') 9872 break; 9873 } 9874 9875 return (ncomp); 9876 } 9877 9878 /* 9879 * There is a user-level copy of this routine in ref_subr.c. 9880 * Changes should be kept in sync. 9881 */ 9882 static int 9883 make_pathname4(char *path, pathname4 *pathname) 9884 { 9885 int ncomp; 9886 component4 *comp4; 9887 9888 if (pathname == NULL) 9889 return (0); 9890 9891 if (path == NULL) { 9892 pathname->pathname4_val = NULL; 9893 pathname->pathname4_len = 0; 9894 return (0); 9895 } 9896 9897 /* count number of components to alloc buffer */ 9898 if ((ncomp = nfs4_create_components(path, NULL)) == 0) { 9899 pathname->pathname4_val = NULL; 9900 pathname->pathname4_len = 0; 9901 return (0); 9902 } 9903 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); 9904 9905 /* copy components into allocated buffer */ 9906 ncomp = nfs4_create_components(path, comp4); 9907 9908 pathname->pathname4_val = comp4; 9909 pathname->pathname4_len = ncomp; 9910 9911 return (ncomp); 9912 } 9913 9914 #define xdr_fs_locations4 xdr_fattr4_fs_locations 9915 9916 fs_locations4 * 9917 fetch_referral(vnode_t *vp, cred_t *cr) 9918 { 9919 nvlist_t *nvl; 9920 char *stype, *sdata; 9921 fs_locations4 *result; 9922 char buf[1024]; 9923 size_t bufsize; 9924 XDR xdr; 9925 int err; 9926 9927 /* 9928 * Check attrs to ensure it's a reparse point 9929 */ 9930 if (vn_is_reparse(vp, cr, NULL) == B_FALSE) 9931 return (NULL); 9932 9933 /* 9934 * Look for an NFS record and get the type and data 9935 */ 9936 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) 9937 return (NULL); 9938 9939 /* 9940 * With the type and data, upcall to get the referral 9941 */ 9942 bufsize = sizeof (buf); 9943 bzero(buf, sizeof (buf)); 9944 err = reparse_kderef((const char *)stype, (const char *)sdata, 9945 buf, &bufsize); 9946 reparse_free(nvl); 9947 9948 DTRACE_PROBE4(nfs4serv__func__referral__upcall, 9949 char *, stype, char *, sdata, char *, buf, int, err); 9950 if (err) { 9951 cmn_err(CE_NOTE, 9952 "reparsed daemon not running: unable to get referral (%d)", 9953 err); 9954 return (NULL); 9955 } 9956 9957 /* 9958 * We get an XDR'ed record back from the kderef call 9959 */ 9960 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); 9961 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); 9962 err = xdr_fs_locations4(&xdr, result); 9963 XDR_DESTROY(&xdr); 9964 if (err != TRUE) { 9965 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, 9966 int, err); 9967 return (NULL); 9968 } 9969 9970 /* 9971 * Look at path to recover fs_root, ignoring the leading '/' 9972 */ 9973 (void) make_pathname4(vp->v_path, &result->fs_root); 9974 9975 return (result); 9976 } 9977 9978 char * 9979 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) 9980 { 9981 fs_locations4 *fsl; 9982 fs_location4 *fs; 9983 char *server, *path, *symbuf; 9984 static char *prefix = "/net/"; 9985 int i, size, npaths; 9986 uint_t len; 9987 9988 /* Get the referral */ 9989 if ((fsl = fetch_referral(vp, cr)) == NULL) 9990 return (NULL); 9991 9992 /* Deal with only the first location and first server */ 9993 fs = &fsl->locations_val[0]; 9994 server = utf8_to_str(&fs->server_val[0], &len, NULL); 9995 if (server == NULL) { 9996 rfs4_free_fs_locations4(fsl); 9997 kmem_free(fsl, sizeof (fs_locations4)); 9998 return (NULL); 9999 } 10000 10001 /* Figure out size for "/net/" + host + /path/path/path + NULL */ 10002 size = strlen(prefix) + len; 10003 for (i = 0; i < fs->rootpath.pathname4_len; i++) 10004 size += fs->rootpath.pathname4_val[i].utf8string_len + 1; 10005 10006 /* Allocate the symlink buffer and fill it */ 10007 symbuf = kmem_zalloc(size, KM_SLEEP); 10008 (void) strcat(symbuf, prefix); 10009 (void) strcat(symbuf, server); 10010 kmem_free(server, len); 10011 10012 npaths = 0; 10013 for (i = 0; i < fs->rootpath.pathname4_len; i++) { 10014 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); 10015 if (path == NULL) 10016 continue; 10017 (void) strcat(symbuf, "/"); 10018 (void) strcat(symbuf, path); 10019 npaths++; 10020 kmem_free(path, len); 10021 } 10022 10023 rfs4_free_fs_locations4(fsl); 10024 kmem_free(fsl, sizeof (fs_locations4)); 10025 10026 if (strsz != NULL) 10027 *strsz = size; 10028 return (symbuf); 10029 } 10030 10031 /* 10032 * Check to see if we have a downrev Solaris client, so that we 10033 * can send it a symlink instead of a referral. 10034 */ 10035 int 10036 client_is_downrev(struct svc_req *req) 10037 { 10038 struct sockaddr *ca; 10039 rfs4_clntip_t *ci; 10040 bool_t create = FALSE; 10041 int is_downrev; 10042 10043 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; 10044 ASSERT(ca); 10045 ci = rfs4_find_clntip(ca, &create); 10046 if (ci == NULL) 10047 return (0); 10048 is_downrev = ci->ri_no_referrals; 10049 rfs4_dbe_rele(ci->ri_dbe); 10050 return (is_downrev); 10051 } 10052