Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/nfs/nfs4xdr.c |
| 3 | * |
| 4 | * Server-side XDR for NFSv4 |
| 5 | * |
| 6 | * Copyright (c) 2002 The Regents of the University of Michigan. |
| 7 | * All rights reserved. |
| 8 | * |
| 9 | * Kendrick Smith <kmsmith@umich.edu> |
| 10 | * Andy Adamson <andros@umich.edu> |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or without |
| 13 | * modification, are permitted provided that the following conditions |
| 14 | * are met: |
| 15 | * |
| 16 | * 1. Redistributions of source code must retain the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer. |
| 18 | * 2. Redistributions in binary form must reproduce the above copyright |
| 19 | * notice, this list of conditions and the following disclaimer in the |
| 20 | * documentation and/or other materials provided with the distribution. |
| 21 | * 3. Neither the name of the University nor the names of its |
| 22 | * contributors may be used to endorse or promote products derived |
| 23 | * from this software without specific prior written permission. |
| 24 | * |
| 25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 36 | * |
| 37 | * TODO: Neil Brown made the following observation: We currently |
| 38 | * initially reserve NFSD_BUFSIZE space on the transmit queue and |
| 39 | * never release any of that until the request is complete. |
| 40 | * It would be good to calculate a new maximum response size while |
| 41 | * decoding the COMPOUND, and call svc_reserve with this number |
| 42 | * at the end of nfs4svc_decode_compoundargs. |
| 43 | */ |
| 44 | |
| 45 | #include <linux/param.h> |
| 46 | #include <linux/smp.h> |
| 47 | #include <linux/smp_lock.h> |
| 48 | #include <linux/fs.h> |
| 49 | #include <linux/namei.h> |
| 50 | #include <linux/vfs.h> |
| 51 | #include <linux/sunrpc/xdr.h> |
| 52 | #include <linux/sunrpc/svc.h> |
| 53 | #include <linux/sunrpc/clnt.h> |
| 54 | #include <linux/nfsd/nfsd.h> |
| 55 | #include <linux/nfsd/state.h> |
| 56 | #include <linux/nfsd/xdr4.h> |
| 57 | #include <linux/nfsd_idmap.h> |
| 58 | #include <linux/nfs4.h> |
| 59 | #include <linux/nfs4_acl.h> |
| 60 | |
| 61 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
| 62 | |
| 63 | static int |
| 64 | check_filename(char *str, int len, int err) |
| 65 | { |
| 66 | int i; |
| 67 | |
| 68 | if (len == 0) |
| 69 | return nfserr_inval; |
| 70 | if (isdotent(str, len)) |
| 71 | return err; |
| 72 | for (i = 0; i < len; i++) |
| 73 | if (str[i] == '/') |
| 74 | return err; |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | /* |
| 79 | * START OF "GENERIC" DECODE ROUTINES. |
| 80 | * These may look a little ugly since they are imported from a "generic" |
| 81 | * set of XDR encode/decode routines which are intended to be shared by |
| 82 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). |
| 83 | * |
| 84 | * If the pain of reading these is too great, it should be a straightforward |
| 85 | * task to translate them into Linux-specific versions which are more |
| 86 | * consistent with the style used in NFSv2/v3... |
| 87 | */ |
| 88 | #define DECODE_HEAD \ |
| 89 | u32 *p; \ |
| 90 | int status |
| 91 | #define DECODE_TAIL \ |
| 92 | status = 0; \ |
| 93 | out: \ |
| 94 | return status; \ |
| 95 | xdr_error: \ |
| 96 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ |
| 97 | status = nfserr_bad_xdr; \ |
| 98 | goto out |
| 99 | |
| 100 | #define READ32(x) (x) = ntohl(*p++) |
| 101 | #define READ64(x) do { \ |
| 102 | (x) = (u64)ntohl(*p++) << 32; \ |
| 103 | (x) |= ntohl(*p++); \ |
| 104 | } while (0) |
| 105 | #define READTIME(x) do { \ |
| 106 | p++; \ |
| 107 | (x) = ntohl(*p++); \ |
| 108 | p++; \ |
| 109 | } while (0) |
| 110 | #define READMEM(x,nbytes) do { \ |
| 111 | x = (char *)p; \ |
| 112 | p += XDR_QUADLEN(nbytes); \ |
| 113 | } while (0) |
| 114 | #define SAVEMEM(x,nbytes) do { \ |
| 115 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ |
| 116 | savemem(argp, p, nbytes) : \ |
| 117 | (char *)p)) { \ |
| 118 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ |
| 119 | goto xdr_error; \ |
| 120 | } \ |
| 121 | p += XDR_QUADLEN(nbytes); \ |
| 122 | } while (0) |
| 123 | #define COPYMEM(x,nbytes) do { \ |
| 124 | memcpy((x), p, nbytes); \ |
| 125 | p += XDR_QUADLEN(nbytes); \ |
| 126 | } while (0) |
| 127 | |
| 128 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ |
| 129 | #define READ_BUF(nbytes) do { \ |
| 130 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ |
| 131 | p = argp->p; \ |
| 132 | argp->p += XDR_QUADLEN(nbytes); \ |
| 133 | } else if (!(p = read_buf(argp, nbytes))) { \ |
| 134 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ |
| 135 | goto xdr_error; \ |
| 136 | } \ |
| 137 | } while (0) |
| 138 | |
NeilBrown | fd39ca9 | 2005-06-23 22:04:03 -0700 | [diff] [blame] | 139 | static u32 *read_buf(struct nfsd4_compoundargs *argp, int nbytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | { |
| 141 | /* We want more bytes than seem to be available. |
| 142 | * Maybe we need a new page, maybe we have just run out |
| 143 | */ |
| 144 | int avail = (char*)argp->end - (char*)argp->p; |
| 145 | u32 *p; |
| 146 | if (avail + argp->pagelen < nbytes) |
| 147 | return NULL; |
| 148 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ |
| 149 | return NULL; |
| 150 | /* ok, we can do it with the current plus the next page */ |
| 151 | if (nbytes <= sizeof(argp->tmp)) |
| 152 | p = argp->tmp; |
| 153 | else { |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 154 | kfree(argp->tmpp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
| 156 | if (!p) |
| 157 | return NULL; |
| 158 | |
| 159 | } |
| 160 | memcpy(p, argp->p, avail); |
| 161 | /* step to next page */ |
| 162 | argp->p = page_address(argp->pagelist[0]); |
| 163 | argp->pagelist++; |
| 164 | if (argp->pagelen < PAGE_SIZE) { |
| 165 | argp->end = p + (argp->pagelen>>2); |
| 166 | argp->pagelen = 0; |
| 167 | } else { |
| 168 | argp->end = p + (PAGE_SIZE>>2); |
| 169 | argp->pagelen -= PAGE_SIZE; |
| 170 | } |
| 171 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
| 172 | argp->p += XDR_QUADLEN(nbytes - avail); |
| 173 | return p; |
| 174 | } |
| 175 | |
| 176 | static int |
| 177 | defer_free(struct nfsd4_compoundargs *argp, |
| 178 | void (*release)(const void *), void *p) |
| 179 | { |
| 180 | struct tmpbuf *tb; |
| 181 | |
| 182 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); |
| 183 | if (!tb) |
| 184 | return -ENOMEM; |
| 185 | tb->buf = p; |
| 186 | tb->release = release; |
| 187 | tb->next = argp->to_free; |
| 188 | argp->to_free = tb; |
| 189 | return 0; |
| 190 | } |
| 191 | |
NeilBrown | fd39ca9 | 2005-06-23 22:04:03 -0700 | [diff] [blame] | 192 | static char *savemem(struct nfsd4_compoundargs *argp, u32 *p, int nbytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | { |
| 194 | void *new = NULL; |
| 195 | if (p == argp->tmp) { |
| 196 | new = kmalloc(nbytes, GFP_KERNEL); |
| 197 | if (!new) return NULL; |
| 198 | p = new; |
| 199 | memcpy(p, argp->tmp, nbytes); |
| 200 | } else { |
| 201 | if (p != argp->tmpp) |
| 202 | BUG(); |
| 203 | argp->tmpp = NULL; |
| 204 | } |
| 205 | if (defer_free(argp, kfree, p)) { |
| 206 | kfree(new); |
| 207 | return NULL; |
| 208 | } else |
| 209 | return (char *)p; |
| 210 | } |
| 211 | |
| 212 | |
| 213 | static int |
| 214 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
| 215 | { |
| 216 | u32 bmlen; |
| 217 | DECODE_HEAD; |
| 218 | |
| 219 | bmval[0] = 0; |
| 220 | bmval[1] = 0; |
| 221 | |
| 222 | READ_BUF(4); |
| 223 | READ32(bmlen); |
| 224 | if (bmlen > 1000) |
| 225 | goto xdr_error; |
| 226 | |
| 227 | READ_BUF(bmlen << 2); |
| 228 | if (bmlen > 0) |
| 229 | READ32(bmval[0]); |
| 230 | if (bmlen > 1) |
| 231 | READ32(bmval[1]); |
| 232 | |
| 233 | DECODE_TAIL; |
| 234 | } |
| 235 | |
| 236 | static int |
| 237 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr, |
| 238 | struct nfs4_acl **acl) |
| 239 | { |
| 240 | int expected_len, len = 0; |
| 241 | u32 dummy32; |
| 242 | char *buf; |
| 243 | |
| 244 | DECODE_HEAD; |
| 245 | iattr->ia_valid = 0; |
| 246 | if ((status = nfsd4_decode_bitmap(argp, bmval))) |
| 247 | return status; |
| 248 | |
| 249 | /* |
| 250 | * According to spec, unsupported attributes return ERR_NOTSUPP; |
| 251 | * read-only attributes return ERR_INVAL. |
| 252 | */ |
| 253 | if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) |
| 254 | return nfserr_attrnotsupp; |
| 255 | if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1)) |
| 256 | return nfserr_inval; |
| 257 | |
| 258 | READ_BUF(4); |
| 259 | READ32(expected_len); |
| 260 | |
| 261 | if (bmval[0] & FATTR4_WORD0_SIZE) { |
| 262 | READ_BUF(8); |
| 263 | len += 8; |
| 264 | READ64(iattr->ia_size); |
| 265 | iattr->ia_valid |= ATTR_SIZE; |
| 266 | } |
| 267 | if (bmval[0] & FATTR4_WORD0_ACL) { |
| 268 | int nace, i; |
| 269 | struct nfs4_ace ace; |
| 270 | |
| 271 | READ_BUF(4); len += 4; |
| 272 | READ32(nace); |
| 273 | |
| 274 | *acl = nfs4_acl_new(); |
| 275 | if (*acl == NULL) { |
| 276 | status = -ENOMEM; |
| 277 | goto out_nfserr; |
| 278 | } |
| 279 | defer_free(argp, (void (*)(const void *))nfs4_acl_free, *acl); |
| 280 | |
| 281 | for (i = 0; i < nace; i++) { |
| 282 | READ_BUF(16); len += 16; |
| 283 | READ32(ace.type); |
| 284 | READ32(ace.flag); |
| 285 | READ32(ace.access_mask); |
| 286 | READ32(dummy32); |
| 287 | READ_BUF(dummy32); |
| 288 | len += XDR_QUADLEN(dummy32) << 2; |
| 289 | READMEM(buf, dummy32); |
| 290 | ace.whotype = nfs4_acl_get_whotype(buf, dummy32); |
| 291 | status = 0; |
| 292 | if (ace.whotype != NFS4_ACL_WHO_NAMED) |
| 293 | ace.who = 0; |
| 294 | else if (ace.flag & NFS4_ACE_IDENTIFIER_GROUP) |
| 295 | status = nfsd_map_name_to_gid(argp->rqstp, |
| 296 | buf, dummy32, &ace.who); |
| 297 | else |
| 298 | status = nfsd_map_name_to_uid(argp->rqstp, |
| 299 | buf, dummy32, &ace.who); |
| 300 | if (status) |
| 301 | goto out_nfserr; |
| 302 | if (nfs4_acl_add_ace(*acl, ace.type, ace.flag, |
| 303 | ace.access_mask, ace.whotype, ace.who) != 0) { |
| 304 | status = -ENOMEM; |
| 305 | goto out_nfserr; |
| 306 | } |
| 307 | } |
| 308 | } else |
| 309 | *acl = NULL; |
| 310 | if (bmval[1] & FATTR4_WORD1_MODE) { |
| 311 | READ_BUF(4); |
| 312 | len += 4; |
| 313 | READ32(iattr->ia_mode); |
| 314 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
| 315 | iattr->ia_valid |= ATTR_MODE; |
| 316 | } |
| 317 | if (bmval[1] & FATTR4_WORD1_OWNER) { |
| 318 | READ_BUF(4); |
| 319 | len += 4; |
| 320 | READ32(dummy32); |
| 321 | READ_BUF(dummy32); |
| 322 | len += (XDR_QUADLEN(dummy32) << 2); |
| 323 | READMEM(buf, dummy32); |
| 324 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
| 325 | goto out_nfserr; |
| 326 | iattr->ia_valid |= ATTR_UID; |
| 327 | } |
| 328 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { |
| 329 | READ_BUF(4); |
| 330 | len += 4; |
| 331 | READ32(dummy32); |
| 332 | READ_BUF(dummy32); |
| 333 | len += (XDR_QUADLEN(dummy32) << 2); |
| 334 | READMEM(buf, dummy32); |
| 335 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
| 336 | goto out_nfserr; |
| 337 | iattr->ia_valid |= ATTR_GID; |
| 338 | } |
| 339 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { |
| 340 | READ_BUF(4); |
| 341 | len += 4; |
| 342 | READ32(dummy32); |
| 343 | switch (dummy32) { |
| 344 | case NFS4_SET_TO_CLIENT_TIME: |
| 345 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore |
| 346 | all 32 bits of 'nseconds'. */ |
| 347 | READ_BUF(12); |
| 348 | len += 12; |
| 349 | READ32(dummy32); |
| 350 | if (dummy32) |
| 351 | return nfserr_inval; |
| 352 | READ32(iattr->ia_atime.tv_sec); |
| 353 | READ32(iattr->ia_atime.tv_nsec); |
| 354 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) |
| 355 | return nfserr_inval; |
| 356 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
| 357 | break; |
| 358 | case NFS4_SET_TO_SERVER_TIME: |
| 359 | iattr->ia_valid |= ATTR_ATIME; |
| 360 | break; |
| 361 | default: |
| 362 | goto xdr_error; |
| 363 | } |
| 364 | } |
| 365 | if (bmval[1] & FATTR4_WORD1_TIME_METADATA) { |
| 366 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore |
| 367 | all 32 bits of 'nseconds'. */ |
| 368 | READ_BUF(12); |
| 369 | len += 12; |
| 370 | READ32(dummy32); |
| 371 | if (dummy32) |
| 372 | return nfserr_inval; |
| 373 | READ32(iattr->ia_ctime.tv_sec); |
| 374 | READ32(iattr->ia_ctime.tv_nsec); |
| 375 | if (iattr->ia_ctime.tv_nsec >= (u32)1000000000) |
| 376 | return nfserr_inval; |
| 377 | iattr->ia_valid |= ATTR_CTIME; |
| 378 | } |
| 379 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
| 380 | READ_BUF(4); |
| 381 | len += 4; |
| 382 | READ32(dummy32); |
| 383 | switch (dummy32) { |
| 384 | case NFS4_SET_TO_CLIENT_TIME: |
| 385 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore |
| 386 | all 32 bits of 'nseconds'. */ |
| 387 | READ_BUF(12); |
| 388 | len += 12; |
| 389 | READ32(dummy32); |
| 390 | if (dummy32) |
| 391 | return nfserr_inval; |
| 392 | READ32(iattr->ia_mtime.tv_sec); |
| 393 | READ32(iattr->ia_mtime.tv_nsec); |
| 394 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) |
| 395 | return nfserr_inval; |
| 396 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
| 397 | break; |
| 398 | case NFS4_SET_TO_SERVER_TIME: |
| 399 | iattr->ia_valid |= ATTR_MTIME; |
| 400 | break; |
| 401 | default: |
| 402 | goto xdr_error; |
| 403 | } |
| 404 | } |
| 405 | if (len != expected_len) |
| 406 | goto xdr_error; |
| 407 | |
| 408 | DECODE_TAIL; |
| 409 | |
| 410 | out_nfserr: |
| 411 | status = nfserrno(status); |
| 412 | goto out; |
| 413 | } |
| 414 | |
| 415 | static int |
| 416 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
| 417 | { |
| 418 | DECODE_HEAD; |
| 419 | |
| 420 | READ_BUF(4); |
| 421 | READ32(access->ac_req_access); |
| 422 | |
| 423 | DECODE_TAIL; |
| 424 | } |
| 425 | |
| 426 | static int |
| 427 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
| 428 | { |
| 429 | DECODE_HEAD; |
| 430 | |
| 431 | close->cl_stateowner = NULL; |
| 432 | READ_BUF(4 + sizeof(stateid_t)); |
| 433 | READ32(close->cl_seqid); |
| 434 | READ32(close->cl_stateid.si_generation); |
| 435 | COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 436 | |
| 437 | DECODE_TAIL; |
| 438 | } |
| 439 | |
| 440 | |
| 441 | static int |
| 442 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
| 443 | { |
| 444 | DECODE_HEAD; |
| 445 | |
| 446 | READ_BUF(12); |
| 447 | READ64(commit->co_offset); |
| 448 | READ32(commit->co_count); |
| 449 | |
| 450 | DECODE_TAIL; |
| 451 | } |
| 452 | |
| 453 | static int |
| 454 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
| 455 | { |
| 456 | DECODE_HEAD; |
| 457 | |
| 458 | READ_BUF(4); |
| 459 | READ32(create->cr_type); |
| 460 | switch (create->cr_type) { |
| 461 | case NF4LNK: |
| 462 | READ_BUF(4); |
| 463 | READ32(create->cr_linklen); |
| 464 | READ_BUF(create->cr_linklen); |
| 465 | SAVEMEM(create->cr_linkname, create->cr_linklen); |
| 466 | break; |
| 467 | case NF4BLK: |
| 468 | case NF4CHR: |
| 469 | READ_BUF(8); |
| 470 | READ32(create->cr_specdata1); |
| 471 | READ32(create->cr_specdata2); |
| 472 | break; |
| 473 | case NF4SOCK: |
| 474 | case NF4FIFO: |
| 475 | case NF4DIR: |
| 476 | default: |
| 477 | break; |
| 478 | } |
| 479 | |
| 480 | READ_BUF(4); |
| 481 | READ32(create->cr_namelen); |
| 482 | READ_BUF(create->cr_namelen); |
| 483 | SAVEMEM(create->cr_name, create->cr_namelen); |
| 484 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) |
| 485 | return status; |
| 486 | |
| 487 | if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl))) |
| 488 | goto out; |
| 489 | |
| 490 | DECODE_TAIL; |
| 491 | } |
| 492 | |
| 493 | static inline int |
| 494 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
| 495 | { |
| 496 | DECODE_HEAD; |
| 497 | |
| 498 | READ_BUF(sizeof(stateid_t)); |
| 499 | READ32(dr->dr_stateid.si_generation); |
| 500 | COPYMEM(&dr->dr_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 501 | |
| 502 | DECODE_TAIL; |
| 503 | } |
| 504 | |
| 505 | static inline int |
| 506 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
| 507 | { |
| 508 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); |
| 509 | } |
| 510 | |
| 511 | static int |
| 512 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
| 513 | { |
| 514 | DECODE_HEAD; |
| 515 | |
| 516 | READ_BUF(4); |
| 517 | READ32(link->li_namelen); |
| 518 | READ_BUF(link->li_namelen); |
| 519 | SAVEMEM(link->li_name, link->li_namelen); |
| 520 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) |
| 521 | return status; |
| 522 | |
| 523 | DECODE_TAIL; |
| 524 | } |
| 525 | |
| 526 | static int |
| 527 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
| 528 | { |
| 529 | DECODE_HEAD; |
| 530 | |
| 531 | lock->lk_stateowner = NULL; |
| 532 | /* |
| 533 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) |
| 534 | */ |
| 535 | READ_BUF(28); |
| 536 | READ32(lock->lk_type); |
| 537 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
| 538 | goto xdr_error; |
| 539 | READ32(lock->lk_reclaim); |
| 540 | READ64(lock->lk_offset); |
| 541 | READ64(lock->lk_length); |
| 542 | READ32(lock->lk_is_new); |
| 543 | |
| 544 | if (lock->lk_is_new) { |
| 545 | READ_BUF(36); |
| 546 | READ32(lock->lk_new_open_seqid); |
| 547 | READ32(lock->lk_new_open_stateid.si_generation); |
| 548 | |
| 549 | COPYMEM(&lock->lk_new_open_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 550 | READ32(lock->lk_new_lock_seqid); |
| 551 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
| 552 | READ32(lock->lk_new_owner.len); |
| 553 | READ_BUF(lock->lk_new_owner.len); |
| 554 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); |
| 555 | } else { |
| 556 | READ_BUF(20); |
| 557 | READ32(lock->lk_old_lock_stateid.si_generation); |
| 558 | COPYMEM(&lock->lk_old_lock_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 559 | READ32(lock->lk_old_lock_seqid); |
| 560 | } |
| 561 | |
| 562 | DECODE_TAIL; |
| 563 | } |
| 564 | |
| 565 | static int |
| 566 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
| 567 | { |
| 568 | DECODE_HEAD; |
| 569 | |
| 570 | READ_BUF(32); |
| 571 | READ32(lockt->lt_type); |
| 572 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
| 573 | goto xdr_error; |
| 574 | READ64(lockt->lt_offset); |
| 575 | READ64(lockt->lt_length); |
| 576 | COPYMEM(&lockt->lt_clientid, 8); |
| 577 | READ32(lockt->lt_owner.len); |
| 578 | READ_BUF(lockt->lt_owner.len); |
| 579 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); |
| 580 | |
| 581 | DECODE_TAIL; |
| 582 | } |
| 583 | |
| 584 | static int |
| 585 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
| 586 | { |
| 587 | DECODE_HEAD; |
| 588 | |
| 589 | locku->lu_stateowner = NULL; |
| 590 | READ_BUF(24 + sizeof(stateid_t)); |
| 591 | READ32(locku->lu_type); |
| 592 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
| 593 | goto xdr_error; |
| 594 | READ32(locku->lu_seqid); |
| 595 | READ32(locku->lu_stateid.si_generation); |
| 596 | COPYMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 597 | READ64(locku->lu_offset); |
| 598 | READ64(locku->lu_length); |
| 599 | |
| 600 | DECODE_TAIL; |
| 601 | } |
| 602 | |
| 603 | static int |
| 604 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
| 605 | { |
| 606 | DECODE_HEAD; |
| 607 | |
| 608 | READ_BUF(4); |
| 609 | READ32(lookup->lo_len); |
| 610 | READ_BUF(lookup->lo_len); |
| 611 | SAVEMEM(lookup->lo_name, lookup->lo_len); |
| 612 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) |
| 613 | return status; |
| 614 | |
| 615 | DECODE_TAIL; |
| 616 | } |
| 617 | |
| 618 | static int |
| 619 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
| 620 | { |
| 621 | DECODE_HEAD; |
| 622 | |
| 623 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); |
| 624 | open->op_iattr.ia_valid = 0; |
| 625 | open->op_stateowner = NULL; |
| 626 | |
| 627 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
| 628 | READ_BUF(16 + sizeof(clientid_t)); |
| 629 | READ32(open->op_seqid); |
| 630 | READ32(open->op_share_access); |
| 631 | READ32(open->op_share_deny); |
| 632 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
| 633 | READ32(open->op_owner.len); |
| 634 | |
| 635 | /* owner, open_flag */ |
| 636 | READ_BUF(open->op_owner.len + 4); |
| 637 | SAVEMEM(open->op_owner.data, open->op_owner.len); |
| 638 | READ32(open->op_create); |
| 639 | switch (open->op_create) { |
| 640 | case NFS4_OPEN_NOCREATE: |
| 641 | break; |
| 642 | case NFS4_OPEN_CREATE: |
| 643 | READ_BUF(4); |
| 644 | READ32(open->op_createmode); |
| 645 | switch (open->op_createmode) { |
| 646 | case NFS4_CREATE_UNCHECKED: |
| 647 | case NFS4_CREATE_GUARDED: |
| 648 | if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl))) |
| 649 | goto out; |
| 650 | break; |
| 651 | case NFS4_CREATE_EXCLUSIVE: |
| 652 | READ_BUF(8); |
| 653 | COPYMEM(open->op_verf.data, 8); |
| 654 | break; |
| 655 | default: |
| 656 | goto xdr_error; |
| 657 | } |
| 658 | break; |
| 659 | default: |
| 660 | goto xdr_error; |
| 661 | } |
| 662 | |
| 663 | /* open_claim */ |
| 664 | READ_BUF(4); |
| 665 | READ32(open->op_claim_type); |
| 666 | switch (open->op_claim_type) { |
| 667 | case NFS4_OPEN_CLAIM_NULL: |
| 668 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
| 669 | READ_BUF(4); |
| 670 | READ32(open->op_fname.len); |
| 671 | READ_BUF(open->op_fname.len); |
| 672 | SAVEMEM(open->op_fname.data, open->op_fname.len); |
| 673 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) |
| 674 | return status; |
| 675 | break; |
| 676 | case NFS4_OPEN_CLAIM_PREVIOUS: |
| 677 | READ_BUF(4); |
| 678 | READ32(open->op_delegate_type); |
| 679 | break; |
| 680 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
| 681 | READ_BUF(sizeof(stateid_t) + 4); |
| 682 | COPYMEM(&open->op_delegate_stateid, sizeof(stateid_t)); |
| 683 | READ32(open->op_fname.len); |
| 684 | READ_BUF(open->op_fname.len); |
| 685 | SAVEMEM(open->op_fname.data, open->op_fname.len); |
| 686 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) |
| 687 | return status; |
| 688 | break; |
| 689 | default: |
| 690 | goto xdr_error; |
| 691 | } |
| 692 | |
| 693 | DECODE_TAIL; |
| 694 | } |
| 695 | |
| 696 | static int |
| 697 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
| 698 | { |
| 699 | DECODE_HEAD; |
| 700 | |
| 701 | open_conf->oc_stateowner = NULL; |
| 702 | READ_BUF(4 + sizeof(stateid_t)); |
| 703 | READ32(open_conf->oc_req_stateid.si_generation); |
| 704 | COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 705 | READ32(open_conf->oc_seqid); |
| 706 | |
| 707 | DECODE_TAIL; |
| 708 | } |
| 709 | |
| 710 | static int |
| 711 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
| 712 | { |
| 713 | DECODE_HEAD; |
| 714 | |
| 715 | open_down->od_stateowner = NULL; |
| 716 | READ_BUF(12 + sizeof(stateid_t)); |
| 717 | READ32(open_down->od_stateid.si_generation); |
| 718 | COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 719 | READ32(open_down->od_seqid); |
| 720 | READ32(open_down->od_share_access); |
| 721 | READ32(open_down->od_share_deny); |
| 722 | |
| 723 | DECODE_TAIL; |
| 724 | } |
| 725 | |
| 726 | static int |
| 727 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
| 728 | { |
| 729 | DECODE_HEAD; |
| 730 | |
| 731 | READ_BUF(4); |
| 732 | READ32(putfh->pf_fhlen); |
| 733 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
| 734 | goto xdr_error; |
| 735 | READ_BUF(putfh->pf_fhlen); |
| 736 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); |
| 737 | |
| 738 | DECODE_TAIL; |
| 739 | } |
| 740 | |
| 741 | static int |
| 742 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
| 743 | { |
| 744 | DECODE_HEAD; |
| 745 | |
| 746 | READ_BUF(sizeof(stateid_t) + 12); |
| 747 | READ32(read->rd_stateid.si_generation); |
| 748 | COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 749 | READ64(read->rd_offset); |
| 750 | READ32(read->rd_length); |
| 751 | |
| 752 | DECODE_TAIL; |
| 753 | } |
| 754 | |
| 755 | static int |
| 756 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
| 757 | { |
| 758 | DECODE_HEAD; |
| 759 | |
| 760 | READ_BUF(24); |
| 761 | READ64(readdir->rd_cookie); |
| 762 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
| 763 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ |
| 764 | READ32(readdir->rd_maxcount); |
| 765 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
| 766 | goto out; |
| 767 | |
| 768 | DECODE_TAIL; |
| 769 | } |
| 770 | |
| 771 | static int |
| 772 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
| 773 | { |
| 774 | DECODE_HEAD; |
| 775 | |
| 776 | READ_BUF(4); |
| 777 | READ32(remove->rm_namelen); |
| 778 | READ_BUF(remove->rm_namelen); |
| 779 | SAVEMEM(remove->rm_name, remove->rm_namelen); |
| 780 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) |
| 781 | return status; |
| 782 | |
| 783 | DECODE_TAIL; |
| 784 | } |
| 785 | |
| 786 | static int |
| 787 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
| 788 | { |
| 789 | DECODE_HEAD; |
| 790 | |
| 791 | READ_BUF(4); |
| 792 | READ32(rename->rn_snamelen); |
| 793 | READ_BUF(rename->rn_snamelen + 4); |
| 794 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); |
| 795 | READ32(rename->rn_tnamelen); |
| 796 | READ_BUF(rename->rn_tnamelen); |
| 797 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); |
| 798 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) |
| 799 | return status; |
| 800 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) |
| 801 | return status; |
| 802 | |
| 803 | DECODE_TAIL; |
| 804 | } |
| 805 | |
| 806 | static int |
| 807 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
| 808 | { |
| 809 | DECODE_HEAD; |
| 810 | |
| 811 | READ_BUF(sizeof(clientid_t)); |
| 812 | COPYMEM(clientid, sizeof(clientid_t)); |
| 813 | |
| 814 | DECODE_TAIL; |
| 815 | } |
| 816 | |
| 817 | static int |
| 818 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
| 819 | { |
| 820 | DECODE_HEAD; |
| 821 | |
| 822 | READ_BUF(sizeof(stateid_t)); |
| 823 | READ32(setattr->sa_stateid.si_generation); |
| 824 | COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 825 | if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl))) |
| 826 | goto out; |
| 827 | |
| 828 | DECODE_TAIL; |
| 829 | } |
| 830 | |
| 831 | static int |
| 832 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
| 833 | { |
| 834 | DECODE_HEAD; |
| 835 | |
| 836 | READ_BUF(12); |
| 837 | COPYMEM(setclientid->se_verf.data, 8); |
| 838 | READ32(setclientid->se_namelen); |
| 839 | |
| 840 | READ_BUF(setclientid->se_namelen + 8); |
| 841 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); |
| 842 | READ32(setclientid->se_callback_prog); |
| 843 | READ32(setclientid->se_callback_netid_len); |
| 844 | |
| 845 | READ_BUF(setclientid->se_callback_netid_len + 4); |
| 846 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); |
| 847 | READ32(setclientid->se_callback_addr_len); |
| 848 | |
| 849 | READ_BUF(setclientid->se_callback_addr_len + 4); |
| 850 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); |
| 851 | READ32(setclientid->se_callback_ident); |
| 852 | |
| 853 | DECODE_TAIL; |
| 854 | } |
| 855 | |
| 856 | static int |
| 857 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
| 858 | { |
| 859 | DECODE_HEAD; |
| 860 | |
| 861 | READ_BUF(8 + sizeof(nfs4_verifier)); |
| 862 | COPYMEM(&scd_c->sc_clientid, 8); |
| 863 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); |
| 864 | |
| 865 | DECODE_TAIL; |
| 866 | } |
| 867 | |
| 868 | /* Also used for NVERIFY */ |
| 869 | static int |
| 870 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
| 871 | { |
| 872 | #if 0 |
| 873 | struct nfsd4_compoundargs save = { |
| 874 | .p = argp->p, |
| 875 | .end = argp->end, |
| 876 | .rqstp = argp->rqstp, |
| 877 | }; |
| 878 | u32 ve_bmval[2]; |
| 879 | struct iattr ve_iattr; /* request */ |
| 880 | struct nfs4_acl *ve_acl; /* request */ |
| 881 | #endif |
| 882 | DECODE_HEAD; |
| 883 | |
| 884 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) |
| 885 | goto out; |
| 886 | |
| 887 | /* For convenience's sake, we compare raw xdr'd attributes in |
| 888 | * nfsd4_proc_verify; however we still decode here just to return |
| 889 | * correct error in case of bad xdr. */ |
| 890 | #if 0 |
| 891 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); |
| 892 | if (status == nfserr_inval) { |
| 893 | status = nfserrno(status); |
| 894 | goto out; |
| 895 | } |
| 896 | #endif |
| 897 | READ_BUF(4); |
| 898 | READ32(verify->ve_attrlen); |
| 899 | READ_BUF(verify->ve_attrlen); |
| 900 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); |
| 901 | |
| 902 | DECODE_TAIL; |
| 903 | } |
| 904 | |
| 905 | static int |
| 906 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
| 907 | { |
| 908 | int avail; |
| 909 | int v; |
| 910 | int len; |
| 911 | DECODE_HEAD; |
| 912 | |
| 913 | READ_BUF(sizeof(stateid_opaque_t) + 20); |
| 914 | READ32(write->wr_stateid.si_generation); |
| 915 | COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 916 | READ64(write->wr_offset); |
| 917 | READ32(write->wr_stable_how); |
| 918 | if (write->wr_stable_how > 2) |
| 919 | goto xdr_error; |
| 920 | READ32(write->wr_buflen); |
| 921 | |
| 922 | /* Sorry .. no magic macros for this.. * |
| 923 | * READ_BUF(write->wr_buflen); |
| 924 | * SAVEMEM(write->wr_buf, write->wr_buflen); |
| 925 | */ |
| 926 | avail = (char*)argp->end - (char*)argp->p; |
| 927 | if (avail + argp->pagelen < write->wr_buflen) { |
| 928 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); |
| 929 | goto xdr_error; |
| 930 | } |
| 931 | write->wr_vec[0].iov_base = p; |
| 932 | write->wr_vec[0].iov_len = avail; |
| 933 | v = 0; |
| 934 | len = write->wr_buflen; |
| 935 | while (len > write->wr_vec[v].iov_len) { |
| 936 | len -= write->wr_vec[v].iov_len; |
| 937 | v++; |
| 938 | write->wr_vec[v].iov_base = page_address(argp->pagelist[0]); |
| 939 | argp->pagelist++; |
| 940 | if (argp->pagelen >= PAGE_SIZE) { |
| 941 | write->wr_vec[v].iov_len = PAGE_SIZE; |
| 942 | argp->pagelen -= PAGE_SIZE; |
| 943 | } else { |
| 944 | write->wr_vec[v].iov_len = argp->pagelen; |
| 945 | argp->pagelen -= len; |
| 946 | } |
| 947 | } |
| 948 | argp->end = (u32*) (write->wr_vec[v].iov_base + write->wr_vec[v].iov_len); |
| 949 | argp->p = (u32*) (write->wr_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); |
| 950 | write->wr_vec[v].iov_len = len; |
| 951 | write->wr_vlen = v+1; |
| 952 | |
| 953 | DECODE_TAIL; |
| 954 | } |
| 955 | |
| 956 | static int |
| 957 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
| 958 | { |
| 959 | DECODE_HEAD; |
| 960 | |
| 961 | READ_BUF(12); |
| 962 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); |
| 963 | READ32(rlockowner->rl_owner.len); |
| 964 | READ_BUF(rlockowner->rl_owner.len); |
| 965 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); |
| 966 | |
| 967 | DECODE_TAIL; |
| 968 | } |
| 969 | |
| 970 | static int |
| 971 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
| 972 | { |
| 973 | DECODE_HEAD; |
| 974 | struct nfsd4_op *op; |
| 975 | int i; |
| 976 | |
| 977 | /* |
| 978 | * XXX: According to spec, we should check the tag |
| 979 | * for UTF-8 compliance. I'm postponing this for |
| 980 | * now because it seems that some clients do use |
| 981 | * binary tags. |
| 982 | */ |
| 983 | READ_BUF(4); |
| 984 | READ32(argp->taglen); |
| 985 | READ_BUF(argp->taglen + 8); |
| 986 | SAVEMEM(argp->tag, argp->taglen); |
| 987 | READ32(argp->minorversion); |
| 988 | READ32(argp->opcnt); |
| 989 | |
| 990 | if (argp->taglen > NFSD4_MAX_TAGLEN) |
| 991 | goto xdr_error; |
| 992 | if (argp->opcnt > 100) |
| 993 | goto xdr_error; |
| 994 | |
| 995 | if (argp->opcnt > sizeof(argp->iops)/sizeof(argp->iops[0])) { |
| 996 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
| 997 | if (!argp->ops) { |
| 998 | argp->ops = argp->iops; |
| 999 | printk(KERN_INFO "nfsd: couldn't allocate room for COMPOUND\n"); |
| 1000 | goto xdr_error; |
| 1001 | } |
| 1002 | } |
| 1003 | |
| 1004 | for (i = 0; i < argp->opcnt; i++) { |
| 1005 | op = &argp->ops[i]; |
| 1006 | op->replay = NULL; |
| 1007 | |
| 1008 | /* |
| 1009 | * We can't use READ_BUF() here because we need to handle |
| 1010 | * a missing opcode as an OP_WRITE + 1. So we need to check |
| 1011 | * to see if we're truly at the end of our buffer or if there |
| 1012 | * is another page we need to flip to. |
| 1013 | */ |
| 1014 | |
| 1015 | if (argp->p == argp->end) { |
| 1016 | if (argp->pagelen < 4) { |
| 1017 | /* There isn't an opcode still on the wire */ |
| 1018 | op->opnum = OP_WRITE + 1; |
| 1019 | op->status = nfserr_bad_xdr; |
| 1020 | argp->opcnt = i+1; |
| 1021 | break; |
| 1022 | } |
| 1023 | |
| 1024 | /* |
| 1025 | * False alarm. We just hit a page boundary, but there |
| 1026 | * is still data available. Move pointer across page |
| 1027 | * boundary. *snip from READ_BUF* |
| 1028 | */ |
| 1029 | argp->p = page_address(argp->pagelist[0]); |
| 1030 | argp->pagelist++; |
| 1031 | if (argp->pagelen < PAGE_SIZE) { |
| 1032 | argp->end = p + (argp->pagelen>>2); |
| 1033 | argp->pagelen = 0; |
| 1034 | } else { |
| 1035 | argp->end = p + (PAGE_SIZE>>2); |
| 1036 | argp->pagelen -= PAGE_SIZE; |
| 1037 | } |
| 1038 | } |
| 1039 | op->opnum = ntohl(*argp->p++); |
| 1040 | |
| 1041 | switch (op->opnum) { |
| 1042 | case 2: /* Reserved operation */ |
| 1043 | op->opnum = OP_ILLEGAL; |
| 1044 | if (argp->minorversion == 0) |
| 1045 | op->status = nfserr_op_illegal; |
| 1046 | else |
| 1047 | op->status = nfserr_minor_vers_mismatch; |
| 1048 | break; |
| 1049 | case OP_ACCESS: |
| 1050 | op->status = nfsd4_decode_access(argp, &op->u.access); |
| 1051 | break; |
| 1052 | case OP_CLOSE: |
| 1053 | op->status = nfsd4_decode_close(argp, &op->u.close); |
| 1054 | break; |
| 1055 | case OP_COMMIT: |
| 1056 | op->status = nfsd4_decode_commit(argp, &op->u.commit); |
| 1057 | break; |
| 1058 | case OP_CREATE: |
| 1059 | op->status = nfsd4_decode_create(argp, &op->u.create); |
| 1060 | break; |
| 1061 | case OP_DELEGRETURN: |
| 1062 | op->status = nfsd4_decode_delegreturn(argp, &op->u.delegreturn); |
| 1063 | break; |
| 1064 | case OP_GETATTR: |
| 1065 | op->status = nfsd4_decode_getattr(argp, &op->u.getattr); |
| 1066 | break; |
| 1067 | case OP_GETFH: |
| 1068 | op->status = nfs_ok; |
| 1069 | break; |
| 1070 | case OP_LINK: |
| 1071 | op->status = nfsd4_decode_link(argp, &op->u.link); |
| 1072 | break; |
| 1073 | case OP_LOCK: |
| 1074 | op->status = nfsd4_decode_lock(argp, &op->u.lock); |
| 1075 | break; |
| 1076 | case OP_LOCKT: |
| 1077 | op->status = nfsd4_decode_lockt(argp, &op->u.lockt); |
| 1078 | break; |
| 1079 | case OP_LOCKU: |
| 1080 | op->status = nfsd4_decode_locku(argp, &op->u.locku); |
| 1081 | break; |
| 1082 | case OP_LOOKUP: |
| 1083 | op->status = nfsd4_decode_lookup(argp, &op->u.lookup); |
| 1084 | break; |
| 1085 | case OP_LOOKUPP: |
| 1086 | op->status = nfs_ok; |
| 1087 | break; |
| 1088 | case OP_NVERIFY: |
| 1089 | op->status = nfsd4_decode_verify(argp, &op->u.nverify); |
| 1090 | break; |
| 1091 | case OP_OPEN: |
| 1092 | op->status = nfsd4_decode_open(argp, &op->u.open); |
| 1093 | break; |
| 1094 | case OP_OPEN_CONFIRM: |
| 1095 | op->status = nfsd4_decode_open_confirm(argp, &op->u.open_confirm); |
| 1096 | break; |
| 1097 | case OP_OPEN_DOWNGRADE: |
| 1098 | op->status = nfsd4_decode_open_downgrade(argp, &op->u.open_downgrade); |
| 1099 | break; |
| 1100 | case OP_PUTFH: |
| 1101 | op->status = nfsd4_decode_putfh(argp, &op->u.putfh); |
| 1102 | break; |
| 1103 | case OP_PUTROOTFH: |
| 1104 | op->status = nfs_ok; |
| 1105 | break; |
| 1106 | case OP_READ: |
| 1107 | op->status = nfsd4_decode_read(argp, &op->u.read); |
| 1108 | break; |
| 1109 | case OP_READDIR: |
| 1110 | op->status = nfsd4_decode_readdir(argp, &op->u.readdir); |
| 1111 | break; |
| 1112 | case OP_READLINK: |
| 1113 | op->status = nfs_ok; |
| 1114 | break; |
| 1115 | case OP_REMOVE: |
| 1116 | op->status = nfsd4_decode_remove(argp, &op->u.remove); |
| 1117 | break; |
| 1118 | case OP_RENAME: |
| 1119 | op->status = nfsd4_decode_rename(argp, &op->u.rename); |
| 1120 | break; |
| 1121 | case OP_RESTOREFH: |
| 1122 | op->status = nfs_ok; |
| 1123 | break; |
| 1124 | case OP_RENEW: |
| 1125 | op->status = nfsd4_decode_renew(argp, &op->u.renew); |
| 1126 | break; |
| 1127 | case OP_SAVEFH: |
| 1128 | op->status = nfs_ok; |
| 1129 | break; |
| 1130 | case OP_SETATTR: |
| 1131 | op->status = nfsd4_decode_setattr(argp, &op->u.setattr); |
| 1132 | break; |
| 1133 | case OP_SETCLIENTID: |
| 1134 | op->status = nfsd4_decode_setclientid(argp, &op->u.setclientid); |
| 1135 | break; |
| 1136 | case OP_SETCLIENTID_CONFIRM: |
| 1137 | op->status = nfsd4_decode_setclientid_confirm(argp, &op->u.setclientid_confirm); |
| 1138 | break; |
| 1139 | case OP_VERIFY: |
| 1140 | op->status = nfsd4_decode_verify(argp, &op->u.verify); |
| 1141 | break; |
| 1142 | case OP_WRITE: |
| 1143 | op->status = nfsd4_decode_write(argp, &op->u.write); |
| 1144 | break; |
| 1145 | case OP_RELEASE_LOCKOWNER: |
| 1146 | op->status = nfsd4_decode_release_lockowner(argp, &op->u.release_lockowner); |
| 1147 | break; |
| 1148 | default: |
| 1149 | op->opnum = OP_ILLEGAL; |
| 1150 | op->status = nfserr_op_illegal; |
| 1151 | break; |
| 1152 | } |
| 1153 | |
| 1154 | if (op->status) { |
| 1155 | argp->opcnt = i+1; |
| 1156 | break; |
| 1157 | } |
| 1158 | } |
| 1159 | |
| 1160 | DECODE_TAIL; |
| 1161 | } |
| 1162 | /* |
| 1163 | * END OF "GENERIC" DECODE ROUTINES. |
| 1164 | */ |
| 1165 | |
| 1166 | /* |
| 1167 | * START OF "GENERIC" ENCODE ROUTINES. |
| 1168 | * These may look a little ugly since they are imported from a "generic" |
| 1169 | * set of XDR encode/decode routines which are intended to be shared by |
| 1170 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). |
| 1171 | * |
| 1172 | * If the pain of reading these is too great, it should be a straightforward |
| 1173 | * task to translate them into Linux-specific versions which are more |
| 1174 | * consistent with the style used in NFSv2/v3... |
| 1175 | */ |
| 1176 | #define ENCODE_HEAD u32 *p |
| 1177 | |
| 1178 | #define WRITE32(n) *p++ = htonl(n) |
| 1179 | #define WRITE64(n) do { \ |
| 1180 | *p++ = htonl((u32)((n) >> 32)); \ |
| 1181 | *p++ = htonl((u32)(n)); \ |
| 1182 | } while (0) |
| 1183 | #define WRITEMEM(ptr,nbytes) do { \ |
| 1184 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
| 1185 | memcpy(p, ptr, nbytes); \ |
| 1186 | p += XDR_QUADLEN(nbytes); \ |
| 1187 | } while (0) |
| 1188 | #define WRITECINFO(c) do { \ |
| 1189 | *p++ = htonl(c.atomic); \ |
| 1190 | *p++ = htonl(c.before_ctime_sec); \ |
| 1191 | *p++ = htonl(c.before_ctime_nsec); \ |
| 1192 | *p++ = htonl(c.after_ctime_sec); \ |
| 1193 | *p++ = htonl(c.after_ctime_nsec); \ |
| 1194 | } while (0) |
| 1195 | |
| 1196 | #define RESERVE_SPACE(nbytes) do { \ |
| 1197 | p = resp->p; \ |
| 1198 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ |
| 1199 | } while (0) |
| 1200 | #define ADJUST_ARGS() resp->p = p |
| 1201 | |
| 1202 | /* |
| 1203 | * Header routine to setup seqid operation replay cache |
| 1204 | */ |
| 1205 | #define ENCODE_SEQID_OP_HEAD \ |
| 1206 | u32 *p; \ |
| 1207 | u32 *save; \ |
| 1208 | \ |
| 1209 | save = resp->p; |
| 1210 | |
| 1211 | /* |
NeilBrown | 7fb64ce | 2005-07-07 17:59:20 -0700 | [diff] [blame] | 1212 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
| 1213 | * is where sequence id's are incremented, and the replay cache is filled. |
| 1214 | * Note that we increment sequence id's here, at the last moment, so we're sure |
| 1215 | * we know whether the error to be returned is a sequence id mutating error. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | */ |
| 1217 | |
| 1218 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ |
| 1219 | if (seqid_mutating_err(nfserr) && stateowner) { \ |
NeilBrown | bd9aac5 | 2005-07-07 17:59:19 -0700 | [diff] [blame] | 1220 | stateowner->so_seqid++; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | stateowner->so_replay.rp_status = nfserr; \ |
| 1222 | stateowner->so_replay.rp_buflen = \ |
| 1223 | (((char *)(resp)->p - (char *)save)); \ |
| 1224 | memcpy(stateowner->so_replay.rp_buf, save, \ |
| 1225 | stateowner->so_replay.rp_buflen); \ |
| 1226 | } } while (0); |
| 1227 | |
| 1228 | |
| 1229 | static u32 nfs4_ftypes[16] = { |
| 1230 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, |
| 1231 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, |
| 1232 | NF4REG, NF4BAD, NF4LNK, NF4BAD, |
| 1233 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, |
| 1234 | }; |
| 1235 | |
| 1236 | static int |
| 1237 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
| 1238 | u32 **p, int *buflen) |
| 1239 | { |
| 1240 | int status; |
| 1241 | |
| 1242 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) |
| 1243 | return nfserr_resource; |
| 1244 | if (whotype != NFS4_ACL_WHO_NAMED) |
| 1245 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); |
| 1246 | else if (group) |
| 1247 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); |
| 1248 | else |
| 1249 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); |
| 1250 | if (status < 0) |
| 1251 | return nfserrno(status); |
| 1252 | *p = xdr_encode_opaque(*p, NULL, status); |
| 1253 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; |
| 1254 | BUG_ON(*buflen < 0); |
| 1255 | return 0; |
| 1256 | } |
| 1257 | |
| 1258 | static inline int |
| 1259 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, u32 **p, int *buflen) |
| 1260 | { |
| 1261 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); |
| 1262 | } |
| 1263 | |
| 1264 | static inline int |
| 1265 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, u32 **p, int *buflen) |
| 1266 | { |
| 1267 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); |
| 1268 | } |
| 1269 | |
| 1270 | static inline int |
| 1271 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
| 1272 | u32 **p, int *buflen) |
| 1273 | { |
| 1274 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); |
| 1275 | } |
| 1276 | |
| 1277 | |
| 1278 | /* |
| 1279 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle |
| 1280 | * ourselves. |
| 1281 | * |
| 1282 | * @countp is the buffer size in _words_; upon successful return this becomes |
| 1283 | * replaced with the number of words written. |
| 1284 | */ |
| 1285 | int |
| 1286 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
| 1287 | struct dentry *dentry, u32 *buffer, int *countp, u32 *bmval, |
| 1288 | struct svc_rqst *rqstp) |
| 1289 | { |
| 1290 | u32 bmval0 = bmval[0]; |
| 1291 | u32 bmval1 = bmval[1]; |
| 1292 | struct kstat stat; |
| 1293 | struct svc_fh tempfh; |
| 1294 | struct kstatfs statfs; |
| 1295 | int buflen = *countp << 2; |
| 1296 | u32 *attrlenp; |
| 1297 | u32 dummy; |
| 1298 | u64 dummy64; |
| 1299 | u32 *p = buffer; |
| 1300 | int status; |
| 1301 | int aclsupport = 0; |
| 1302 | struct nfs4_acl *acl = NULL; |
| 1303 | |
| 1304 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); |
| 1305 | BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0); |
| 1306 | BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1); |
| 1307 | |
| 1308 | status = vfs_getattr(exp->ex_mnt, dentry, &stat); |
| 1309 | if (status) |
| 1310 | goto out_nfserr; |
| 1311 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) || |
| 1312 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
| 1313 | FATTR4_WORD1_SPACE_TOTAL))) { |
| 1314 | status = vfs_statfs(dentry->d_inode->i_sb, &statfs); |
| 1315 | if (status) |
| 1316 | goto out_nfserr; |
| 1317 | } |
| 1318 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { |
| 1319 | fh_init(&tempfh, NFS4_FHSIZE); |
| 1320 | status = fh_compose(&tempfh, exp, dentry, NULL); |
| 1321 | if (status) |
| 1322 | goto out; |
| 1323 | fhp = &tempfh; |
| 1324 | } |
| 1325 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT |
| 1326 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { |
| 1327 | status = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
| 1328 | aclsupport = (status == 0); |
| 1329 | if (bmval0 & FATTR4_WORD0_ACL) { |
| 1330 | if (status == -EOPNOTSUPP) |
| 1331 | bmval0 &= ~FATTR4_WORD0_ACL; |
| 1332 | else if (status == -EINVAL) { |
| 1333 | status = nfserr_attrnotsupp; |
| 1334 | goto out; |
| 1335 | } else if (status != 0) |
| 1336 | goto out_nfserr; |
| 1337 | } |
| 1338 | } |
| 1339 | if ((buflen -= 16) < 0) |
| 1340 | goto out_resource; |
| 1341 | |
| 1342 | WRITE32(2); |
| 1343 | WRITE32(bmval0); |
| 1344 | WRITE32(bmval1); |
| 1345 | attrlenp = p++; /* to be backfilled later */ |
| 1346 | |
| 1347 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { |
| 1348 | if ((buflen -= 12) < 0) |
| 1349 | goto out_resource; |
| 1350 | WRITE32(2); |
| 1351 | WRITE32(aclsupport ? |
| 1352 | NFSD_SUPPORTED_ATTRS_WORD0 : |
| 1353 | NFSD_SUPPORTED_ATTRS_WORD0 & ~FATTR4_WORD0_ACL); |
| 1354 | WRITE32(NFSD_SUPPORTED_ATTRS_WORD1); |
| 1355 | } |
| 1356 | if (bmval0 & FATTR4_WORD0_TYPE) { |
| 1357 | if ((buflen -= 4) < 0) |
| 1358 | goto out_resource; |
| 1359 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; |
| 1360 | if (dummy == NF4BAD) |
| 1361 | goto out_serverfault; |
| 1362 | WRITE32(dummy); |
| 1363 | } |
| 1364 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { |
| 1365 | if ((buflen -= 4) < 0) |
| 1366 | goto out_resource; |
NeilBrown | 4964000 | 2005-06-23 22:02:58 -0700 | [diff] [blame] | 1367 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
NeilBrown | e34ac86 | 2005-07-07 17:59:30 -0700 | [diff] [blame] | 1368 | WRITE32(NFS4_FH_PERSISTENT); |
NeilBrown | 4964000 | 2005-06-23 22:02:58 -0700 | [diff] [blame] | 1369 | else |
NeilBrown | e34ac86 | 2005-07-07 17:59:30 -0700 | [diff] [blame] | 1370 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | } |
| 1372 | if (bmval0 & FATTR4_WORD0_CHANGE) { |
| 1373 | /* |
| 1374 | * Note: This _must_ be consistent with the scheme for writing |
| 1375 | * change_info, so any changes made here must be reflected there |
| 1376 | * as well. (See xdr4.h:set_change_info() and the WRITECINFO() |
| 1377 | * macro above.) |
| 1378 | */ |
| 1379 | if ((buflen -= 8) < 0) |
| 1380 | goto out_resource; |
| 1381 | WRITE32(stat.ctime.tv_sec); |
| 1382 | WRITE32(stat.ctime.tv_nsec); |
| 1383 | } |
| 1384 | if (bmval0 & FATTR4_WORD0_SIZE) { |
| 1385 | if ((buflen -= 8) < 0) |
| 1386 | goto out_resource; |
| 1387 | WRITE64(stat.size); |
| 1388 | } |
| 1389 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { |
| 1390 | if ((buflen -= 4) < 0) |
| 1391 | goto out_resource; |
| 1392 | WRITE32(1); |
| 1393 | } |
| 1394 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { |
| 1395 | if ((buflen -= 4) < 0) |
| 1396 | goto out_resource; |
| 1397 | WRITE32(1); |
| 1398 | } |
| 1399 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { |
| 1400 | if ((buflen -= 4) < 0) |
| 1401 | goto out_resource; |
| 1402 | WRITE32(0); |
| 1403 | } |
| 1404 | if (bmval0 & FATTR4_WORD0_FSID) { |
| 1405 | if ((buflen -= 16) < 0) |
| 1406 | goto out_resource; |
| 1407 | if (is_fsid(fhp, rqstp->rq_reffh)) { |
| 1408 | WRITE64((u64)exp->ex_fsid); |
| 1409 | WRITE64((u64)0); |
| 1410 | } else { |
| 1411 | WRITE32(0); |
| 1412 | WRITE32(MAJOR(stat.dev)); |
| 1413 | WRITE32(0); |
| 1414 | WRITE32(MINOR(stat.dev)); |
| 1415 | } |
| 1416 | } |
| 1417 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { |
| 1418 | if ((buflen -= 4) < 0) |
| 1419 | goto out_resource; |
| 1420 | WRITE32(0); |
| 1421 | } |
| 1422 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { |
| 1423 | if ((buflen -= 4) < 0) |
| 1424 | goto out_resource; |
| 1425 | WRITE32(NFSD_LEASE_TIME); |
| 1426 | } |
| 1427 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { |
| 1428 | if ((buflen -= 4) < 0) |
| 1429 | goto out_resource; |
| 1430 | WRITE32(0); |
| 1431 | } |
| 1432 | if (bmval0 & FATTR4_WORD0_ACL) { |
| 1433 | struct nfs4_ace *ace; |
| 1434 | struct list_head *h; |
| 1435 | |
| 1436 | if (acl == NULL) { |
| 1437 | if ((buflen -= 4) < 0) |
| 1438 | goto out_resource; |
| 1439 | |
| 1440 | WRITE32(0); |
| 1441 | goto out_acl; |
| 1442 | } |
| 1443 | if ((buflen -= 4) < 0) |
| 1444 | goto out_resource; |
| 1445 | WRITE32(acl->naces); |
| 1446 | |
| 1447 | list_for_each(h, &acl->ace_head) { |
| 1448 | ace = list_entry(h, struct nfs4_ace, l_ace); |
| 1449 | |
| 1450 | if ((buflen -= 4*3) < 0) |
| 1451 | goto out_resource; |
| 1452 | WRITE32(ace->type); |
| 1453 | WRITE32(ace->flag); |
| 1454 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); |
| 1455 | status = nfsd4_encode_aclname(rqstp, ace->whotype, |
| 1456 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, |
| 1457 | &p, &buflen); |
| 1458 | if (status == nfserr_resource) |
| 1459 | goto out_resource; |
| 1460 | if (status) |
| 1461 | goto out; |
| 1462 | } |
| 1463 | } |
| 1464 | out_acl: |
| 1465 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { |
| 1466 | if ((buflen -= 4) < 0) |
| 1467 | goto out_resource; |
| 1468 | WRITE32(aclsupport ? |
| 1469 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
| 1470 | } |
| 1471 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { |
| 1472 | if ((buflen -= 4) < 0) |
| 1473 | goto out_resource; |
| 1474 | WRITE32(1); |
| 1475 | } |
| 1476 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { |
| 1477 | if ((buflen -= 4) < 0) |
| 1478 | goto out_resource; |
| 1479 | WRITE32(1); |
| 1480 | } |
| 1481 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { |
| 1482 | if ((buflen -= 4) < 0) |
| 1483 | goto out_resource; |
| 1484 | WRITE32(1); |
| 1485 | } |
| 1486 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { |
| 1487 | if ((buflen -= 4) < 0) |
| 1488 | goto out_resource; |
| 1489 | WRITE32(1); |
| 1490 | } |
| 1491 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { |
| 1492 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; |
| 1493 | if (buflen < 0) |
| 1494 | goto out_resource; |
| 1495 | WRITE32(fhp->fh_handle.fh_size); |
| 1496 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); |
| 1497 | } |
| 1498 | if (bmval0 & FATTR4_WORD0_FILEID) { |
| 1499 | if ((buflen -= 8) < 0) |
| 1500 | goto out_resource; |
| 1501 | WRITE64((u64) stat.ino); |
| 1502 | } |
| 1503 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { |
| 1504 | if ((buflen -= 8) < 0) |
| 1505 | goto out_resource; |
| 1506 | WRITE64((u64) statfs.f_ffree); |
| 1507 | } |
| 1508 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { |
| 1509 | if ((buflen -= 8) < 0) |
| 1510 | goto out_resource; |
| 1511 | WRITE64((u64) statfs.f_ffree); |
| 1512 | } |
| 1513 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { |
| 1514 | if ((buflen -= 8) < 0) |
| 1515 | goto out_resource; |
| 1516 | WRITE64((u64) statfs.f_files); |
| 1517 | } |
| 1518 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
| 1519 | if ((buflen -= 4) < 0) |
| 1520 | goto out_resource; |
| 1521 | WRITE32(1); |
| 1522 | } |
| 1523 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { |
| 1524 | if ((buflen -= 8) < 0) |
| 1525 | goto out_resource; |
| 1526 | WRITE64(~(u64)0); |
| 1527 | } |
| 1528 | if (bmval0 & FATTR4_WORD0_MAXLINK) { |
| 1529 | if ((buflen -= 4) < 0) |
| 1530 | goto out_resource; |
| 1531 | WRITE32(255); |
| 1532 | } |
| 1533 | if (bmval0 & FATTR4_WORD0_MAXNAME) { |
| 1534 | if ((buflen -= 4) < 0) |
| 1535 | goto out_resource; |
| 1536 | WRITE32(~(u32) 0); |
| 1537 | } |
| 1538 | if (bmval0 & FATTR4_WORD0_MAXREAD) { |
| 1539 | if ((buflen -= 8) < 0) |
| 1540 | goto out_resource; |
| 1541 | WRITE64((u64) NFSSVC_MAXBLKSIZE); |
| 1542 | } |
| 1543 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { |
| 1544 | if ((buflen -= 8) < 0) |
| 1545 | goto out_resource; |
| 1546 | WRITE64((u64) NFSSVC_MAXBLKSIZE); |
| 1547 | } |
| 1548 | if (bmval1 & FATTR4_WORD1_MODE) { |
| 1549 | if ((buflen -= 4) < 0) |
| 1550 | goto out_resource; |
| 1551 | WRITE32(stat.mode & S_IALLUGO); |
| 1552 | } |
| 1553 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { |
| 1554 | if ((buflen -= 4) < 0) |
| 1555 | goto out_resource; |
| 1556 | WRITE32(1); |
| 1557 | } |
| 1558 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { |
| 1559 | if ((buflen -= 4) < 0) |
| 1560 | goto out_resource; |
| 1561 | WRITE32(stat.nlink); |
| 1562 | } |
| 1563 | if (bmval1 & FATTR4_WORD1_OWNER) { |
| 1564 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); |
| 1565 | if (status == nfserr_resource) |
| 1566 | goto out_resource; |
| 1567 | if (status) |
| 1568 | goto out; |
| 1569 | } |
| 1570 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { |
| 1571 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); |
| 1572 | if (status == nfserr_resource) |
| 1573 | goto out_resource; |
| 1574 | if (status) |
| 1575 | goto out; |
| 1576 | } |
| 1577 | if (bmval1 & FATTR4_WORD1_RAWDEV) { |
| 1578 | if ((buflen -= 8) < 0) |
| 1579 | goto out_resource; |
| 1580 | WRITE32((u32) MAJOR(stat.rdev)); |
| 1581 | WRITE32((u32) MINOR(stat.rdev)); |
| 1582 | } |
| 1583 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { |
| 1584 | if ((buflen -= 8) < 0) |
| 1585 | goto out_resource; |
| 1586 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; |
| 1587 | WRITE64(dummy64); |
| 1588 | } |
| 1589 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { |
| 1590 | if ((buflen -= 8) < 0) |
| 1591 | goto out_resource; |
| 1592 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; |
| 1593 | WRITE64(dummy64); |
| 1594 | } |
| 1595 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { |
| 1596 | if ((buflen -= 8) < 0) |
| 1597 | goto out_resource; |
| 1598 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; |
| 1599 | WRITE64(dummy64); |
| 1600 | } |
| 1601 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { |
| 1602 | if ((buflen -= 8) < 0) |
| 1603 | goto out_resource; |
| 1604 | dummy64 = (u64)stat.blocks << 9; |
| 1605 | WRITE64(dummy64); |
| 1606 | } |
| 1607 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { |
| 1608 | if ((buflen -= 12) < 0) |
| 1609 | goto out_resource; |
| 1610 | WRITE32(0); |
| 1611 | WRITE32(stat.atime.tv_sec); |
| 1612 | WRITE32(stat.atime.tv_nsec); |
| 1613 | } |
| 1614 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { |
| 1615 | if ((buflen -= 12) < 0) |
| 1616 | goto out_resource; |
| 1617 | WRITE32(0); |
| 1618 | WRITE32(1); |
| 1619 | WRITE32(0); |
| 1620 | } |
| 1621 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { |
| 1622 | if ((buflen -= 12) < 0) |
| 1623 | goto out_resource; |
| 1624 | WRITE32(0); |
| 1625 | WRITE32(stat.ctime.tv_sec); |
| 1626 | WRITE32(stat.ctime.tv_nsec); |
| 1627 | } |
| 1628 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { |
| 1629 | if ((buflen -= 12) < 0) |
| 1630 | goto out_resource; |
| 1631 | WRITE32(0); |
| 1632 | WRITE32(stat.mtime.tv_sec); |
| 1633 | WRITE32(stat.mtime.tv_nsec); |
| 1634 | } |
| 1635 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { |
| 1636 | struct dentry *mnt_pnt, *mnt_root; |
| 1637 | |
| 1638 | if ((buflen -= 8) < 0) |
| 1639 | goto out_resource; |
| 1640 | mnt_root = exp->ex_mnt->mnt_root; |
| 1641 | if (mnt_root->d_inode == dentry->d_inode) { |
| 1642 | mnt_pnt = exp->ex_mnt->mnt_mountpoint; |
| 1643 | WRITE64((u64) mnt_pnt->d_inode->i_ino); |
| 1644 | } else |
| 1645 | WRITE64((u64) stat.ino); |
| 1646 | } |
| 1647 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
| 1648 | *countp = p - buffer; |
| 1649 | status = nfs_ok; |
| 1650 | |
| 1651 | out: |
| 1652 | nfs4_acl_free(acl); |
| 1653 | if (fhp == &tempfh) |
| 1654 | fh_put(&tempfh); |
| 1655 | return status; |
| 1656 | out_nfserr: |
| 1657 | status = nfserrno(status); |
| 1658 | goto out; |
| 1659 | out_resource: |
| 1660 | *countp = 0; |
| 1661 | status = nfserr_resource; |
| 1662 | goto out; |
| 1663 | out_serverfault: |
| 1664 | status = nfserr_serverfault; |
| 1665 | goto out; |
| 1666 | } |
| 1667 | |
| 1668 | static int |
| 1669 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
| 1670 | const char *name, int namlen, u32 *p, int *buflen) |
| 1671 | { |
| 1672 | struct svc_export *exp = cd->rd_fhp->fh_export; |
| 1673 | struct dentry *dentry; |
| 1674 | int nfserr; |
| 1675 | |
| 1676 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); |
| 1677 | if (IS_ERR(dentry)) |
| 1678 | return nfserrno(PTR_ERR(dentry)); |
| 1679 | |
| 1680 | exp_get(exp); |
| 1681 | if (d_mountpoint(dentry)) { |
| 1682 | if (nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp)) { |
| 1683 | /* |
| 1684 | * -EAGAIN is the only error returned from |
| 1685 | * nfsd_cross_mnt() and it indicates that an |
| 1686 | * up-call has been initiated to fill in the export |
| 1687 | * options on exp. When the answer comes back, |
| 1688 | * this call will be retried. |
| 1689 | */ |
| 1690 | nfserr = nfserr_dropit; |
| 1691 | goto out_put; |
| 1692 | } |
| 1693 | |
| 1694 | } |
| 1695 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
| 1696 | cd->rd_rqstp); |
| 1697 | out_put: |
| 1698 | dput(dentry); |
| 1699 | exp_put(exp); |
| 1700 | return nfserr; |
| 1701 | } |
| 1702 | |
| 1703 | static u32 * |
| 1704 | nfsd4_encode_rdattr_error(u32 *p, int buflen, int nfserr) |
| 1705 | { |
| 1706 | u32 *attrlenp; |
| 1707 | |
| 1708 | if (buflen < 6) |
| 1709 | return NULL; |
| 1710 | *p++ = htonl(2); |
| 1711 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ |
| 1712 | *p++ = htonl(0); /* bmval1 */ |
| 1713 | |
| 1714 | attrlenp = p++; |
| 1715 | *p++ = nfserr; /* no htonl */ |
| 1716 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
| 1717 | return p; |
| 1718 | } |
| 1719 | |
| 1720 | static int |
| 1721 | nfsd4_encode_dirent(struct readdir_cd *ccd, const char *name, int namlen, |
| 1722 | loff_t offset, ino_t ino, unsigned int d_type) |
| 1723 | { |
| 1724 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
| 1725 | int buflen; |
| 1726 | u32 *p = cd->buffer; |
| 1727 | int nfserr = nfserr_toosmall; |
| 1728 | |
| 1729 | /* In nfsv4, "." and ".." never make it onto the wire.. */ |
| 1730 | if (name && isdotent(name, namlen)) { |
| 1731 | cd->common.err = nfs_ok; |
| 1732 | return 0; |
| 1733 | } |
| 1734 | |
| 1735 | if (cd->offset) |
| 1736 | xdr_encode_hyper(cd->offset, (u64) offset); |
| 1737 | |
| 1738 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); |
| 1739 | if (buflen < 0) |
| 1740 | goto fail; |
| 1741 | |
| 1742 | *p++ = xdr_one; /* mark entry present */ |
| 1743 | cd->offset = p; /* remember pointer */ |
| 1744 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
| 1745 | p = xdr_encode_array(p, name, namlen); /* name length & name */ |
| 1746 | |
| 1747 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); |
| 1748 | switch (nfserr) { |
| 1749 | case nfs_ok: |
| 1750 | p += buflen; |
| 1751 | break; |
| 1752 | case nfserr_resource: |
| 1753 | nfserr = nfserr_toosmall; |
| 1754 | goto fail; |
| 1755 | case nfserr_dropit: |
| 1756 | goto fail; |
| 1757 | default: |
| 1758 | /* |
| 1759 | * If the client requested the RDATTR_ERROR attribute, |
| 1760 | * we stuff the error code into this attribute |
| 1761 | * and continue. If this attribute was not requested, |
| 1762 | * then in accordance with the spec, we fail the |
| 1763 | * entire READDIR operation(!) |
| 1764 | */ |
| 1765 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) |
| 1766 | goto fail; |
| 1767 | nfserr = nfserr_toosmall; |
| 1768 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
| 1769 | if (p == NULL) |
| 1770 | goto fail; |
| 1771 | } |
| 1772 | cd->buflen -= (p - cd->buffer); |
| 1773 | cd->buffer = p; |
| 1774 | cd->common.err = nfs_ok; |
| 1775 | return 0; |
| 1776 | fail: |
| 1777 | cd->common.err = nfserr; |
| 1778 | return -EINVAL; |
| 1779 | } |
| 1780 | |
| 1781 | static void |
| 1782 | nfsd4_encode_access(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_access *access) |
| 1783 | { |
| 1784 | ENCODE_HEAD; |
| 1785 | |
| 1786 | if (!nfserr) { |
| 1787 | RESERVE_SPACE(8); |
| 1788 | WRITE32(access->ac_supported); |
| 1789 | WRITE32(access->ac_resp_access); |
| 1790 | ADJUST_ARGS(); |
| 1791 | } |
| 1792 | } |
| 1793 | |
| 1794 | static void |
| 1795 | nfsd4_encode_close(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_close *close) |
| 1796 | { |
| 1797 | ENCODE_SEQID_OP_HEAD; |
| 1798 | |
| 1799 | if (!nfserr) { |
| 1800 | RESERVE_SPACE(sizeof(stateid_t)); |
| 1801 | WRITE32(close->cl_stateid.si_generation); |
| 1802 | WRITEMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 1803 | ADJUST_ARGS(); |
| 1804 | } |
| 1805 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); |
| 1806 | } |
| 1807 | |
| 1808 | |
| 1809 | static void |
| 1810 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_commit *commit) |
| 1811 | { |
| 1812 | ENCODE_HEAD; |
| 1813 | |
| 1814 | if (!nfserr) { |
| 1815 | RESERVE_SPACE(8); |
| 1816 | WRITEMEM(commit->co_verf.data, 8); |
| 1817 | ADJUST_ARGS(); |
| 1818 | } |
| 1819 | } |
| 1820 | |
| 1821 | static void |
| 1822 | nfsd4_encode_create(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_create *create) |
| 1823 | { |
| 1824 | ENCODE_HEAD; |
| 1825 | |
| 1826 | if (!nfserr) { |
| 1827 | RESERVE_SPACE(32); |
| 1828 | WRITECINFO(create->cr_cinfo); |
| 1829 | WRITE32(2); |
| 1830 | WRITE32(create->cr_bmval[0]); |
| 1831 | WRITE32(create->cr_bmval[1]); |
| 1832 | ADJUST_ARGS(); |
| 1833 | } |
| 1834 | } |
| 1835 | |
| 1836 | static int |
| 1837 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_getattr *getattr) |
| 1838 | { |
| 1839 | struct svc_fh *fhp = getattr->ga_fhp; |
| 1840 | int buflen; |
| 1841 | |
| 1842 | if (nfserr) |
| 1843 | return nfserr; |
| 1844 | |
| 1845 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); |
| 1846 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, |
| 1847 | resp->p, &buflen, getattr->ga_bmval, |
| 1848 | resp->rqstp); |
| 1849 | |
| 1850 | if (!nfserr) |
| 1851 | resp->p += buflen; |
| 1852 | return nfserr; |
| 1853 | } |
| 1854 | |
| 1855 | static void |
| 1856 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, int nfserr, struct svc_fh *fhp) |
| 1857 | { |
| 1858 | unsigned int len; |
| 1859 | ENCODE_HEAD; |
| 1860 | |
| 1861 | if (!nfserr) { |
| 1862 | len = fhp->fh_handle.fh_size; |
| 1863 | RESERVE_SPACE(len + 4); |
| 1864 | WRITE32(len); |
| 1865 | WRITEMEM(&fhp->fh_handle.fh_base, len); |
| 1866 | ADJUST_ARGS(); |
| 1867 | } |
| 1868 | } |
| 1869 | |
| 1870 | /* |
| 1871 | * Including all fields other than the name, a LOCK4denied structure requires |
| 1872 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. |
| 1873 | */ |
| 1874 | static void |
| 1875 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) |
| 1876 | { |
| 1877 | ENCODE_HEAD; |
| 1878 | |
| 1879 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); |
| 1880 | WRITE64(ld->ld_start); |
| 1881 | WRITE64(ld->ld_length); |
| 1882 | WRITE32(ld->ld_type); |
| 1883 | if (ld->ld_sop) { |
| 1884 | WRITEMEM(&ld->ld_clientid, 8); |
| 1885 | WRITE32(ld->ld_sop->so_owner.len); |
| 1886 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); |
| 1887 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); |
| 1888 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
| 1889 | WRITE64((u64)0); /* clientid */ |
| 1890 | WRITE32(0); /* length of owner name */ |
| 1891 | } |
| 1892 | ADJUST_ARGS(); |
| 1893 | } |
| 1894 | |
| 1895 | static void |
| 1896 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lock *lock) |
| 1897 | { |
| 1898 | |
| 1899 | ENCODE_SEQID_OP_HEAD; |
| 1900 | |
| 1901 | if (!nfserr) { |
| 1902 | RESERVE_SPACE(4 + sizeof(stateid_t)); |
| 1903 | WRITE32(lock->lk_resp_stateid.si_generation); |
| 1904 | WRITEMEM(&lock->lk_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 1905 | ADJUST_ARGS(); |
| 1906 | } else if (nfserr == nfserr_denied) |
| 1907 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
| 1908 | |
| 1909 | ENCODE_SEQID_OP_TAIL(lock->lk_stateowner); |
| 1910 | } |
| 1911 | |
| 1912 | static void |
| 1913 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lockt *lockt) |
| 1914 | { |
| 1915 | if (nfserr == nfserr_denied) |
| 1916 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); |
| 1917 | } |
| 1918 | |
| 1919 | static void |
| 1920 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_locku *locku) |
| 1921 | { |
| 1922 | ENCODE_SEQID_OP_HEAD; |
| 1923 | |
| 1924 | if (!nfserr) { |
| 1925 | RESERVE_SPACE(sizeof(stateid_t)); |
| 1926 | WRITE32(locku->lu_stateid.si_generation); |
| 1927 | WRITEMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 1928 | ADJUST_ARGS(); |
| 1929 | } |
| 1930 | |
| 1931 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); |
| 1932 | } |
| 1933 | |
| 1934 | |
| 1935 | static void |
| 1936 | nfsd4_encode_link(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_link *link) |
| 1937 | { |
| 1938 | ENCODE_HEAD; |
| 1939 | |
| 1940 | if (!nfserr) { |
| 1941 | RESERVE_SPACE(20); |
| 1942 | WRITECINFO(link->li_cinfo); |
| 1943 | ADJUST_ARGS(); |
| 1944 | } |
| 1945 | } |
| 1946 | |
| 1947 | |
| 1948 | static void |
| 1949 | nfsd4_encode_open(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open *open) |
| 1950 | { |
| 1951 | ENCODE_SEQID_OP_HEAD; |
| 1952 | |
| 1953 | if (nfserr) |
| 1954 | goto out; |
| 1955 | |
| 1956 | RESERVE_SPACE(36 + sizeof(stateid_t)); |
| 1957 | WRITE32(open->op_stateid.si_generation); |
| 1958 | WRITEMEM(&open->op_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 1959 | WRITECINFO(open->op_cinfo); |
| 1960 | WRITE32(open->op_rflags); |
| 1961 | WRITE32(2); |
| 1962 | WRITE32(open->op_bmval[0]); |
| 1963 | WRITE32(open->op_bmval[1]); |
| 1964 | WRITE32(open->op_delegate_type); |
| 1965 | ADJUST_ARGS(); |
| 1966 | |
| 1967 | switch (open->op_delegate_type) { |
| 1968 | case NFS4_OPEN_DELEGATE_NONE: |
| 1969 | break; |
| 1970 | case NFS4_OPEN_DELEGATE_READ: |
| 1971 | RESERVE_SPACE(20 + sizeof(stateid_t)); |
| 1972 | WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); |
NeilBrown | 7b190fe | 2005-06-23 22:03:23 -0700 | [diff] [blame] | 1973 | WRITE32(open->op_recall); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | |
| 1975 | /* |
| 1976 | * TODO: ACE's in delegations |
| 1977 | */ |
| 1978 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
| 1979 | WRITE32(0); |
| 1980 | WRITE32(0); |
| 1981 | WRITE32(0); /* XXX: is NULL principal ok? */ |
| 1982 | ADJUST_ARGS(); |
| 1983 | break; |
| 1984 | case NFS4_OPEN_DELEGATE_WRITE: |
| 1985 | RESERVE_SPACE(32 + sizeof(stateid_t)); |
| 1986 | WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); |
| 1987 | WRITE32(0); |
| 1988 | |
| 1989 | /* |
| 1990 | * TODO: space_limit's in delegations |
| 1991 | */ |
| 1992 | WRITE32(NFS4_LIMIT_SIZE); |
| 1993 | WRITE32(~(u32)0); |
| 1994 | WRITE32(~(u32)0); |
| 1995 | |
| 1996 | /* |
| 1997 | * TODO: ACE's in delegations |
| 1998 | */ |
| 1999 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
| 2000 | WRITE32(0); |
| 2001 | WRITE32(0); |
| 2002 | WRITE32(0); /* XXX: is NULL principal ok? */ |
| 2003 | ADJUST_ARGS(); |
| 2004 | break; |
| 2005 | default: |
| 2006 | BUG(); |
| 2007 | } |
| 2008 | /* XXX save filehandle here */ |
| 2009 | out: |
| 2010 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); |
| 2011 | } |
| 2012 | |
| 2013 | static void |
| 2014 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open_confirm *oc) |
| 2015 | { |
| 2016 | ENCODE_SEQID_OP_HEAD; |
| 2017 | |
| 2018 | if (!nfserr) { |
| 2019 | RESERVE_SPACE(sizeof(stateid_t)); |
| 2020 | WRITE32(oc->oc_resp_stateid.si_generation); |
| 2021 | WRITEMEM(&oc->oc_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 2022 | ADJUST_ARGS(); |
| 2023 | } |
| 2024 | |
| 2025 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); |
| 2026 | } |
| 2027 | |
| 2028 | static void |
| 2029 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open_downgrade *od) |
| 2030 | { |
| 2031 | ENCODE_SEQID_OP_HEAD; |
| 2032 | |
| 2033 | if (!nfserr) { |
| 2034 | RESERVE_SPACE(sizeof(stateid_t)); |
| 2035 | WRITE32(od->od_stateid.si_generation); |
| 2036 | WRITEMEM(&od->od_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 2037 | ADJUST_ARGS(); |
| 2038 | } |
| 2039 | |
| 2040 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); |
| 2041 | } |
| 2042 | |
| 2043 | static int |
| 2044 | nfsd4_encode_read(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_read *read) |
| 2045 | { |
| 2046 | u32 eof; |
| 2047 | int v, pn; |
| 2048 | unsigned long maxcount; |
| 2049 | long len; |
| 2050 | ENCODE_HEAD; |
| 2051 | |
| 2052 | if (nfserr) |
| 2053 | return nfserr; |
| 2054 | if (resp->xbuf->page_len) |
| 2055 | return nfserr_resource; |
| 2056 | |
| 2057 | RESERVE_SPACE(8); /* eof flag and byte count */ |
| 2058 | |
| 2059 | maxcount = NFSSVC_MAXBLKSIZE; |
| 2060 | if (maxcount > read->rd_length) |
| 2061 | maxcount = read->rd_length; |
| 2062 | |
| 2063 | len = maxcount; |
| 2064 | v = 0; |
| 2065 | while (len > 0) { |
| 2066 | pn = resp->rqstp->rq_resused; |
| 2067 | svc_take_page(resp->rqstp); |
| 2068 | read->rd_iov[v].iov_base = page_address(resp->rqstp->rq_respages[pn]); |
| 2069 | read->rd_iov[v].iov_len = len < PAGE_SIZE ? len : PAGE_SIZE; |
| 2070 | v++; |
| 2071 | len -= PAGE_SIZE; |
| 2072 | } |
| 2073 | read->rd_vlen = v; |
| 2074 | |
| 2075 | nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
| 2076 | read->rd_offset, read->rd_iov, read->rd_vlen, |
| 2077 | &maxcount); |
| 2078 | |
| 2079 | if (nfserr == nfserr_symlink) |
| 2080 | nfserr = nfserr_inval; |
| 2081 | if (nfserr) |
| 2082 | return nfserr; |
| 2083 | eof = (read->rd_offset + maxcount >= read->rd_fhp->fh_dentry->d_inode->i_size); |
| 2084 | |
| 2085 | WRITE32(eof); |
| 2086 | WRITE32(maxcount); |
| 2087 | ADJUST_ARGS(); |
| 2088 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; |
| 2089 | |
| 2090 | resp->xbuf->page_len = maxcount; |
| 2091 | |
| 2092 | /* read zero bytes -> don't set up tail */ |
| 2093 | if(!maxcount) |
| 2094 | return 0; |
| 2095 | |
| 2096 | /* set up page for remaining responses */ |
| 2097 | svc_take_page(resp->rqstp); |
| 2098 | resp->xbuf->tail[0].iov_base = |
| 2099 | page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); |
| 2100 | resp->rqstp->rq_restailpage = resp->rqstp->rq_resused-1; |
| 2101 | resp->xbuf->tail[0].iov_len = 0; |
| 2102 | resp->p = resp->xbuf->tail[0].iov_base; |
| 2103 | resp->end = resp->p + PAGE_SIZE/4; |
| 2104 | |
| 2105 | if (maxcount&3) { |
| 2106 | *(resp->p)++ = 0; |
| 2107 | resp->xbuf->tail[0].iov_base += maxcount&3; |
| 2108 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); |
| 2109 | } |
| 2110 | return 0; |
| 2111 | } |
| 2112 | |
| 2113 | static int |
| 2114 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readlink *readlink) |
| 2115 | { |
| 2116 | int maxcount; |
| 2117 | char *page; |
| 2118 | ENCODE_HEAD; |
| 2119 | |
| 2120 | if (nfserr) |
| 2121 | return nfserr; |
| 2122 | if (resp->xbuf->page_len) |
| 2123 | return nfserr_resource; |
| 2124 | |
| 2125 | svc_take_page(resp->rqstp); |
| 2126 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); |
| 2127 | |
| 2128 | maxcount = PAGE_SIZE; |
| 2129 | RESERVE_SPACE(4); |
| 2130 | |
| 2131 | /* |
| 2132 | * XXX: By default, the ->readlink() VFS op will truncate symlinks |
| 2133 | * if they would overflow the buffer. Is this kosher in NFSv4? If |
| 2134 | * not, one easy fix is: if ->readlink() precisely fills the buffer, |
| 2135 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. |
| 2136 | */ |
| 2137 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); |
| 2138 | if (nfserr == nfserr_isdir) |
| 2139 | return nfserr_inval; |
| 2140 | if (nfserr) |
| 2141 | return nfserr; |
| 2142 | |
| 2143 | WRITE32(maxcount); |
| 2144 | ADJUST_ARGS(); |
| 2145 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; |
| 2146 | |
| 2147 | svc_take_page(resp->rqstp); |
| 2148 | resp->xbuf->tail[0].iov_base = |
| 2149 | page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); |
| 2150 | resp->rqstp->rq_restailpage = resp->rqstp->rq_resused-1; |
| 2151 | resp->xbuf->tail[0].iov_len = 0; |
| 2152 | resp->p = resp->xbuf->tail[0].iov_base; |
| 2153 | resp->end = resp->p + PAGE_SIZE/4; |
| 2154 | |
| 2155 | resp->xbuf->page_len = maxcount; |
| 2156 | if (maxcount&3) { |
| 2157 | *(resp->p)++ = 0; |
| 2158 | resp->xbuf->tail[0].iov_base += maxcount&3; |
| 2159 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); |
| 2160 | } |
| 2161 | return 0; |
| 2162 | } |
| 2163 | |
| 2164 | static int |
| 2165 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readdir *readdir) |
| 2166 | { |
| 2167 | int maxcount; |
| 2168 | loff_t offset; |
| 2169 | u32 *page, *savep; |
| 2170 | ENCODE_HEAD; |
| 2171 | |
| 2172 | if (nfserr) |
| 2173 | return nfserr; |
| 2174 | if (resp->xbuf->page_len) |
| 2175 | return nfserr_resource; |
| 2176 | |
| 2177 | RESERVE_SPACE(8); /* verifier */ |
| 2178 | savep = p; |
| 2179 | |
| 2180 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ |
| 2181 | WRITE32(0); |
| 2182 | WRITE32(0); |
| 2183 | ADJUST_ARGS(); |
| 2184 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; |
| 2185 | |
| 2186 | maxcount = PAGE_SIZE; |
| 2187 | if (maxcount > readdir->rd_maxcount) |
| 2188 | maxcount = readdir->rd_maxcount; |
| 2189 | |
| 2190 | /* |
| 2191 | * Convert from bytes to words, account for the two words already |
| 2192 | * written, make sure to leave two words at the end for the next |
| 2193 | * pointer and eof field. |
| 2194 | */ |
| 2195 | maxcount = (maxcount >> 2) - 4; |
| 2196 | if (maxcount < 0) { |
| 2197 | nfserr = nfserr_toosmall; |
| 2198 | goto err_no_verf; |
| 2199 | } |
| 2200 | |
| 2201 | svc_take_page(resp->rqstp); |
| 2202 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); |
| 2203 | readdir->common.err = 0; |
| 2204 | readdir->buflen = maxcount; |
| 2205 | readdir->buffer = page; |
| 2206 | readdir->offset = NULL; |
| 2207 | |
| 2208 | offset = readdir->rd_cookie; |
| 2209 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, |
| 2210 | &offset, |
| 2211 | &readdir->common, nfsd4_encode_dirent); |
| 2212 | if (nfserr == nfs_ok && |
| 2213 | readdir->common.err == nfserr_toosmall && |
| 2214 | readdir->buffer == page) |
| 2215 | nfserr = nfserr_toosmall; |
| 2216 | if (nfserr == nfserr_symlink) |
| 2217 | nfserr = nfserr_notdir; |
| 2218 | if (nfserr) |
| 2219 | goto err_no_verf; |
| 2220 | |
| 2221 | if (readdir->offset) |
| 2222 | xdr_encode_hyper(readdir->offset, offset); |
| 2223 | |
| 2224 | p = readdir->buffer; |
| 2225 | *p++ = 0; /* no more entries */ |
| 2226 | *p++ = htonl(readdir->common.err == nfserr_eof); |
| 2227 | resp->xbuf->page_len = ((char*)p) - (char*)page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); |
| 2228 | |
| 2229 | /* allocate a page for the tail */ |
| 2230 | svc_take_page(resp->rqstp); |
| 2231 | resp->xbuf->tail[0].iov_base = |
| 2232 | page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); |
| 2233 | resp->rqstp->rq_restailpage = resp->rqstp->rq_resused-1; |
| 2234 | resp->xbuf->tail[0].iov_len = 0; |
| 2235 | resp->p = resp->xbuf->tail[0].iov_base; |
| 2236 | resp->end = resp->p + PAGE_SIZE/4; |
| 2237 | |
| 2238 | return 0; |
| 2239 | err_no_verf: |
| 2240 | p = savep; |
| 2241 | ADJUST_ARGS(); |
| 2242 | return nfserr; |
| 2243 | } |
| 2244 | |
| 2245 | static void |
| 2246 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_remove *remove) |
| 2247 | { |
| 2248 | ENCODE_HEAD; |
| 2249 | |
| 2250 | if (!nfserr) { |
| 2251 | RESERVE_SPACE(20); |
| 2252 | WRITECINFO(remove->rm_cinfo); |
| 2253 | ADJUST_ARGS(); |
| 2254 | } |
| 2255 | } |
| 2256 | |
| 2257 | static void |
| 2258 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_rename *rename) |
| 2259 | { |
| 2260 | ENCODE_HEAD; |
| 2261 | |
| 2262 | if (!nfserr) { |
| 2263 | RESERVE_SPACE(40); |
| 2264 | WRITECINFO(rename->rn_sinfo); |
| 2265 | WRITECINFO(rename->rn_tinfo); |
| 2266 | ADJUST_ARGS(); |
| 2267 | } |
| 2268 | } |
| 2269 | |
| 2270 | /* |
| 2271 | * The SETATTR encode routine is special -- it always encodes a bitmap, |
| 2272 | * regardless of the error status. |
| 2273 | */ |
| 2274 | static void |
| 2275 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setattr *setattr) |
| 2276 | { |
| 2277 | ENCODE_HEAD; |
| 2278 | |
| 2279 | RESERVE_SPACE(12); |
| 2280 | if (nfserr) { |
| 2281 | WRITE32(2); |
| 2282 | WRITE32(0); |
| 2283 | WRITE32(0); |
| 2284 | } |
| 2285 | else { |
| 2286 | WRITE32(2); |
| 2287 | WRITE32(setattr->sa_bmval[0]); |
| 2288 | WRITE32(setattr->sa_bmval[1]); |
| 2289 | } |
| 2290 | ADJUST_ARGS(); |
| 2291 | } |
| 2292 | |
| 2293 | static void |
| 2294 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setclientid *scd) |
| 2295 | { |
| 2296 | ENCODE_HEAD; |
| 2297 | |
| 2298 | if (!nfserr) { |
| 2299 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); |
| 2300 | WRITEMEM(&scd->se_clientid, 8); |
| 2301 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); |
| 2302 | ADJUST_ARGS(); |
| 2303 | } |
| 2304 | else if (nfserr == nfserr_clid_inuse) { |
| 2305 | RESERVE_SPACE(8); |
| 2306 | WRITE32(0); |
| 2307 | WRITE32(0); |
| 2308 | ADJUST_ARGS(); |
| 2309 | } |
| 2310 | } |
| 2311 | |
| 2312 | static void |
| 2313 | nfsd4_encode_write(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_write *write) |
| 2314 | { |
| 2315 | ENCODE_HEAD; |
| 2316 | |
| 2317 | if (!nfserr) { |
| 2318 | RESERVE_SPACE(16); |
| 2319 | WRITE32(write->wr_bytes_written); |
| 2320 | WRITE32(write->wr_how_written); |
| 2321 | WRITEMEM(write->wr_verifier.data, 8); |
| 2322 | ADJUST_ARGS(); |
| 2323 | } |
| 2324 | } |
| 2325 | |
| 2326 | void |
| 2327 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) |
| 2328 | { |
| 2329 | u32 *statp; |
| 2330 | ENCODE_HEAD; |
| 2331 | |
| 2332 | RESERVE_SPACE(8); |
| 2333 | WRITE32(op->opnum); |
| 2334 | statp = p++; /* to be backfilled at the end */ |
| 2335 | ADJUST_ARGS(); |
| 2336 | |
| 2337 | switch (op->opnum) { |
| 2338 | case OP_ACCESS: |
| 2339 | nfsd4_encode_access(resp, op->status, &op->u.access); |
| 2340 | break; |
| 2341 | case OP_CLOSE: |
| 2342 | nfsd4_encode_close(resp, op->status, &op->u.close); |
| 2343 | break; |
| 2344 | case OP_COMMIT: |
| 2345 | nfsd4_encode_commit(resp, op->status, &op->u.commit); |
| 2346 | break; |
| 2347 | case OP_CREATE: |
| 2348 | nfsd4_encode_create(resp, op->status, &op->u.create); |
| 2349 | break; |
| 2350 | case OP_DELEGRETURN: |
| 2351 | break; |
| 2352 | case OP_GETATTR: |
| 2353 | op->status = nfsd4_encode_getattr(resp, op->status, &op->u.getattr); |
| 2354 | break; |
| 2355 | case OP_GETFH: |
| 2356 | nfsd4_encode_getfh(resp, op->status, op->u.getfh); |
| 2357 | break; |
| 2358 | case OP_LINK: |
| 2359 | nfsd4_encode_link(resp, op->status, &op->u.link); |
| 2360 | break; |
| 2361 | case OP_LOCK: |
| 2362 | nfsd4_encode_lock(resp, op->status, &op->u.lock); |
| 2363 | break; |
| 2364 | case OP_LOCKT: |
| 2365 | nfsd4_encode_lockt(resp, op->status, &op->u.lockt); |
| 2366 | break; |
| 2367 | case OP_LOCKU: |
| 2368 | nfsd4_encode_locku(resp, op->status, &op->u.locku); |
| 2369 | break; |
| 2370 | case OP_LOOKUP: |
| 2371 | break; |
| 2372 | case OP_LOOKUPP: |
| 2373 | break; |
| 2374 | case OP_NVERIFY: |
| 2375 | break; |
| 2376 | case OP_OPEN: |
| 2377 | nfsd4_encode_open(resp, op->status, &op->u.open); |
| 2378 | break; |
| 2379 | case OP_OPEN_CONFIRM: |
| 2380 | nfsd4_encode_open_confirm(resp, op->status, &op->u.open_confirm); |
| 2381 | break; |
| 2382 | case OP_OPEN_DOWNGRADE: |
| 2383 | nfsd4_encode_open_downgrade(resp, op->status, &op->u.open_downgrade); |
| 2384 | break; |
| 2385 | case OP_PUTFH: |
| 2386 | break; |
| 2387 | case OP_PUTROOTFH: |
| 2388 | break; |
| 2389 | case OP_READ: |
| 2390 | op->status = nfsd4_encode_read(resp, op->status, &op->u.read); |
| 2391 | break; |
| 2392 | case OP_READDIR: |
| 2393 | op->status = nfsd4_encode_readdir(resp, op->status, &op->u.readdir); |
| 2394 | break; |
| 2395 | case OP_READLINK: |
| 2396 | op->status = nfsd4_encode_readlink(resp, op->status, &op->u.readlink); |
| 2397 | break; |
| 2398 | case OP_REMOVE: |
| 2399 | nfsd4_encode_remove(resp, op->status, &op->u.remove); |
| 2400 | break; |
| 2401 | case OP_RENAME: |
| 2402 | nfsd4_encode_rename(resp, op->status, &op->u.rename); |
| 2403 | break; |
| 2404 | case OP_RENEW: |
| 2405 | break; |
| 2406 | case OP_RESTOREFH: |
| 2407 | break; |
| 2408 | case OP_SAVEFH: |
| 2409 | break; |
| 2410 | case OP_SETATTR: |
| 2411 | nfsd4_encode_setattr(resp, op->status, &op->u.setattr); |
| 2412 | break; |
| 2413 | case OP_SETCLIENTID: |
| 2414 | nfsd4_encode_setclientid(resp, op->status, &op->u.setclientid); |
| 2415 | break; |
| 2416 | case OP_SETCLIENTID_CONFIRM: |
| 2417 | break; |
| 2418 | case OP_VERIFY: |
| 2419 | break; |
| 2420 | case OP_WRITE: |
| 2421 | nfsd4_encode_write(resp, op->status, &op->u.write); |
| 2422 | break; |
| 2423 | case OP_RELEASE_LOCKOWNER: |
| 2424 | break; |
| 2425 | default: |
| 2426 | break; |
| 2427 | } |
| 2428 | |
| 2429 | /* |
| 2430 | * Note: We write the status directly, instead of using WRITE32(), |
| 2431 | * since it is already in network byte order. |
| 2432 | */ |
| 2433 | *statp = op->status; |
| 2434 | } |
| 2435 | |
| 2436 | /* |
| 2437 | * Encode the reply stored in the stateowner reply cache |
| 2438 | * |
| 2439 | * XDR note: do not encode rp->rp_buflen: the buffer contains the |
| 2440 | * previously sent already encoded operation. |
| 2441 | * |
| 2442 | * called with nfs4_lock_state() held |
| 2443 | */ |
| 2444 | void |
| 2445 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) |
| 2446 | { |
| 2447 | ENCODE_HEAD; |
| 2448 | struct nfs4_replay *rp = op->replay; |
| 2449 | |
| 2450 | BUG_ON(!rp); |
| 2451 | |
| 2452 | RESERVE_SPACE(8); |
| 2453 | WRITE32(op->opnum); |
| 2454 | *p++ = rp->rp_status; /* already xdr'ed */ |
| 2455 | ADJUST_ARGS(); |
| 2456 | |
| 2457 | RESERVE_SPACE(rp->rp_buflen); |
| 2458 | WRITEMEM(rp->rp_buf, rp->rp_buflen); |
| 2459 | ADJUST_ARGS(); |
| 2460 | } |
| 2461 | |
| 2462 | /* |
| 2463 | * END OF "GENERIC" ENCODE ROUTINES. |
| 2464 | */ |
| 2465 | |
| 2466 | int |
| 2467 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, u32 *p, void *dummy) |
| 2468 | { |
| 2469 | return xdr_ressize_check(rqstp, p); |
| 2470 | } |
| 2471 | |
| 2472 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) |
| 2473 | { |
| 2474 | if (args->ops != args->iops) { |
| 2475 | kfree(args->ops); |
| 2476 | args->ops = args->iops; |
| 2477 | } |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 2478 | kfree(args->tmpp); |
| 2479 | args->tmpp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2480 | while (args->to_free) { |
| 2481 | struct tmpbuf *tb = args->to_free; |
| 2482 | args->to_free = tb->next; |
| 2483 | tb->release(tb->buf); |
| 2484 | kfree(tb); |
| 2485 | } |
| 2486 | } |
| 2487 | |
| 2488 | int |
| 2489 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundargs *args) |
| 2490 | { |
| 2491 | int status; |
| 2492 | |
| 2493 | args->p = p; |
| 2494 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; |
| 2495 | args->pagelist = rqstp->rq_arg.pages; |
| 2496 | args->pagelen = rqstp->rq_arg.page_len; |
| 2497 | args->tmpp = NULL; |
| 2498 | args->to_free = NULL; |
| 2499 | args->ops = args->iops; |
| 2500 | args->rqstp = rqstp; |
| 2501 | |
| 2502 | status = nfsd4_decode_compound(args); |
| 2503 | if (status) { |
| 2504 | nfsd4_release_compoundargs(args); |
| 2505 | } |
| 2506 | return !status; |
| 2507 | } |
| 2508 | |
| 2509 | int |
| 2510 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundres *resp) |
| 2511 | { |
| 2512 | /* |
| 2513 | * All that remains is to write the tag and operation count... |
| 2514 | */ |
| 2515 | struct kvec *iov; |
| 2516 | p = resp->tagp; |
| 2517 | *p++ = htonl(resp->taglen); |
| 2518 | memcpy(p, resp->tag, resp->taglen); |
| 2519 | p += XDR_QUADLEN(resp->taglen); |
| 2520 | *p++ = htonl(resp->opcnt); |
| 2521 | |
| 2522 | if (rqstp->rq_res.page_len) |
| 2523 | iov = &rqstp->rq_res.tail[0]; |
| 2524 | else |
| 2525 | iov = &rqstp->rq_res.head[0]; |
| 2526 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; |
| 2527 | BUG_ON(iov->iov_len > PAGE_SIZE); |
| 2528 | return 1; |
| 2529 | } |
| 2530 | |
| 2531 | /* |
| 2532 | * Local variables: |
| 2533 | * c-basic-offset: 8 |
| 2534 | * End: |
| 2535 | */ |