Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/lockd/xdr.c |
| 3 | * |
| 4 | * XDR support for lockd and the lock client. |
| 5 | * |
| 6 | * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> |
| 7 | */ |
| 8 | |
| 9 | #include <linux/config.h> |
| 10 | #include <linux/types.h> |
| 11 | #include <linux/sched.h> |
| 12 | #include <linux/utsname.h> |
| 13 | #include <linux/nfs.h> |
| 14 | |
| 15 | #include <linux/sunrpc/xdr.h> |
| 16 | #include <linux/sunrpc/clnt.h> |
| 17 | #include <linux/sunrpc/svc.h> |
| 18 | #include <linux/sunrpc/stats.h> |
| 19 | #include <linux/lockd/lockd.h> |
| 20 | #include <linux/lockd/sm_inter.h> |
| 21 | |
| 22 | #define NLMDBG_FACILITY NLMDBG_XDR |
| 23 | |
| 24 | |
| 25 | static inline loff_t |
| 26 | s32_to_loff_t(__s32 offset) |
| 27 | { |
| 28 | return (loff_t)offset; |
| 29 | } |
| 30 | |
| 31 | static inline __s32 |
| 32 | loff_t_to_s32(loff_t offset) |
| 33 | { |
| 34 | __s32 res; |
| 35 | if (offset >= NLM_OFFSET_MAX) |
| 36 | res = NLM_OFFSET_MAX; |
| 37 | else if (offset <= -NLM_OFFSET_MAX) |
| 38 | res = -NLM_OFFSET_MAX; |
| 39 | else |
| 40 | res = offset; |
| 41 | return res; |
| 42 | } |
| 43 | |
| 44 | /* |
| 45 | * XDR functions for basic NLM types |
| 46 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame^] | 47 | static u32 *nlm_decode_cookie(u32 *p, struct nlm_cookie *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | { |
| 49 | unsigned int len; |
| 50 | |
| 51 | len = ntohl(*p++); |
| 52 | |
| 53 | if(len==0) |
| 54 | { |
| 55 | c->len=4; |
| 56 | memset(c->data, 0, 4); /* hockeypux brain damage */ |
| 57 | } |
| 58 | else if(len<=NLM_MAXCOOKIELEN) |
| 59 | { |
| 60 | c->len=len; |
| 61 | memcpy(c->data, p, len); |
| 62 | p+=XDR_QUADLEN(len); |
| 63 | } |
| 64 | else |
| 65 | { |
| 66 | printk(KERN_NOTICE |
| 67 | "lockd: bad cookie size %d (only cookies under %d bytes are supported.)\n", len, NLM_MAXCOOKIELEN); |
| 68 | return NULL; |
| 69 | } |
| 70 | return p; |
| 71 | } |
| 72 | |
| 73 | static inline u32 * |
| 74 | nlm_encode_cookie(u32 *p, struct nlm_cookie *c) |
| 75 | { |
| 76 | *p++ = htonl(c->len); |
| 77 | memcpy(p, c->data, c->len); |
| 78 | p+=XDR_QUADLEN(c->len); |
| 79 | return p; |
| 80 | } |
| 81 | |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame^] | 82 | static u32 * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | nlm_decode_fh(u32 *p, struct nfs_fh *f) |
| 84 | { |
| 85 | unsigned int len; |
| 86 | |
| 87 | if ((len = ntohl(*p++)) != NFS2_FHSIZE) { |
| 88 | printk(KERN_NOTICE |
| 89 | "lockd: bad fhandle size %d (should be %d)\n", |
| 90 | len, NFS2_FHSIZE); |
| 91 | return NULL; |
| 92 | } |
| 93 | f->size = NFS2_FHSIZE; |
| 94 | memset(f->data, 0, sizeof(f->data)); |
| 95 | memcpy(f->data, p, NFS2_FHSIZE); |
| 96 | return p + XDR_QUADLEN(NFS2_FHSIZE); |
| 97 | } |
| 98 | |
| 99 | static inline u32 * |
| 100 | nlm_encode_fh(u32 *p, struct nfs_fh *f) |
| 101 | { |
| 102 | *p++ = htonl(NFS2_FHSIZE); |
| 103 | memcpy(p, f->data, NFS2_FHSIZE); |
| 104 | return p + XDR_QUADLEN(NFS2_FHSIZE); |
| 105 | } |
| 106 | |
| 107 | /* |
| 108 | * Encode and decode owner handle |
| 109 | */ |
| 110 | static inline u32 * |
| 111 | nlm_decode_oh(u32 *p, struct xdr_netobj *oh) |
| 112 | { |
| 113 | return xdr_decode_netobj(p, oh); |
| 114 | } |
| 115 | |
| 116 | static inline u32 * |
| 117 | nlm_encode_oh(u32 *p, struct xdr_netobj *oh) |
| 118 | { |
| 119 | return xdr_encode_netobj(p, oh); |
| 120 | } |
| 121 | |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame^] | 122 | static u32 * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | nlm_decode_lock(u32 *p, struct nlm_lock *lock) |
| 124 | { |
| 125 | struct file_lock *fl = &lock->fl; |
| 126 | s32 start, len, end; |
| 127 | |
| 128 | if (!(p = xdr_decode_string_inplace(p, &lock->caller, |
| 129 | &lock->len, |
| 130 | NLM_MAXSTRLEN)) |
| 131 | || !(p = nlm_decode_fh(p, &lock->fh)) |
| 132 | || !(p = nlm_decode_oh(p, &lock->oh))) |
| 133 | return NULL; |
| 134 | |
| 135 | locks_init_lock(fl); |
| 136 | fl->fl_owner = current->files; |
| 137 | fl->fl_pid = ntohl(*p++); |
| 138 | fl->fl_flags = FL_POSIX; |
| 139 | fl->fl_type = F_RDLCK; /* as good as anything else */ |
| 140 | start = ntohl(*p++); |
| 141 | len = ntohl(*p++); |
| 142 | end = start + len - 1; |
| 143 | |
| 144 | fl->fl_start = s32_to_loff_t(start); |
| 145 | |
| 146 | if (len == 0 || end < 0) |
| 147 | fl->fl_end = OFFSET_MAX; |
| 148 | else |
| 149 | fl->fl_end = s32_to_loff_t(end); |
| 150 | return p; |
| 151 | } |
| 152 | |
| 153 | /* |
| 154 | * Encode a lock as part of an NLM call |
| 155 | */ |
| 156 | static u32 * |
| 157 | nlm_encode_lock(u32 *p, struct nlm_lock *lock) |
| 158 | { |
| 159 | struct file_lock *fl = &lock->fl; |
| 160 | __s32 start, len; |
| 161 | |
| 162 | if (!(p = xdr_encode_string(p, lock->caller)) |
| 163 | || !(p = nlm_encode_fh(p, &lock->fh)) |
| 164 | || !(p = nlm_encode_oh(p, &lock->oh))) |
| 165 | return NULL; |
| 166 | |
| 167 | if (fl->fl_start > NLM_OFFSET_MAX |
| 168 | || (fl->fl_end > NLM_OFFSET_MAX && fl->fl_end != OFFSET_MAX)) |
| 169 | return NULL; |
| 170 | |
| 171 | start = loff_t_to_s32(fl->fl_start); |
| 172 | if (fl->fl_end == OFFSET_MAX) |
| 173 | len = 0; |
| 174 | else |
| 175 | len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1); |
| 176 | |
| 177 | *p++ = htonl(fl->fl_pid); |
| 178 | *p++ = htonl(start); |
| 179 | *p++ = htonl(len); |
| 180 | |
| 181 | return p; |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * Encode result of a TEST/TEST_MSG call |
| 186 | */ |
| 187 | static u32 * |
| 188 | nlm_encode_testres(u32 *p, struct nlm_res *resp) |
| 189 | { |
| 190 | s32 start, len; |
| 191 | |
| 192 | if (!(p = nlm_encode_cookie(p, &resp->cookie))) |
| 193 | return NULL; |
| 194 | *p++ = resp->status; |
| 195 | |
| 196 | if (resp->status == nlm_lck_denied) { |
| 197 | struct file_lock *fl = &resp->lock.fl; |
| 198 | |
| 199 | *p++ = (fl->fl_type == F_RDLCK)? xdr_zero : xdr_one; |
| 200 | *p++ = htonl(fl->fl_pid); |
| 201 | |
| 202 | /* Encode owner handle. */ |
| 203 | if (!(p = xdr_encode_netobj(p, &resp->lock.oh))) |
| 204 | return NULL; |
| 205 | |
| 206 | start = loff_t_to_s32(fl->fl_start); |
| 207 | if (fl->fl_end == OFFSET_MAX) |
| 208 | len = 0; |
| 209 | else |
| 210 | len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1); |
| 211 | |
| 212 | *p++ = htonl(start); |
| 213 | *p++ = htonl(len); |
| 214 | } |
| 215 | |
| 216 | return p; |
| 217 | } |
| 218 | |
| 219 | |
| 220 | /* |
| 221 | * First, the server side XDR functions |
| 222 | */ |
| 223 | int |
| 224 | nlmsvc_decode_testargs(struct svc_rqst *rqstp, u32 *p, nlm_args *argp) |
| 225 | { |
| 226 | u32 exclusive; |
| 227 | |
| 228 | if (!(p = nlm_decode_cookie(p, &argp->cookie))) |
| 229 | return 0; |
| 230 | |
| 231 | exclusive = ntohl(*p++); |
| 232 | if (!(p = nlm_decode_lock(p, &argp->lock))) |
| 233 | return 0; |
| 234 | if (exclusive) |
| 235 | argp->lock.fl.fl_type = F_WRLCK; |
| 236 | |
| 237 | return xdr_argsize_check(rqstp, p); |
| 238 | } |
| 239 | |
| 240 | int |
| 241 | nlmsvc_encode_testres(struct svc_rqst *rqstp, u32 *p, struct nlm_res *resp) |
| 242 | { |
| 243 | if (!(p = nlm_encode_testres(p, resp))) |
| 244 | return 0; |
| 245 | return xdr_ressize_check(rqstp, p); |
| 246 | } |
| 247 | |
| 248 | int |
| 249 | nlmsvc_decode_lockargs(struct svc_rqst *rqstp, u32 *p, nlm_args *argp) |
| 250 | { |
| 251 | u32 exclusive; |
| 252 | |
| 253 | if (!(p = nlm_decode_cookie(p, &argp->cookie))) |
| 254 | return 0; |
| 255 | argp->block = ntohl(*p++); |
| 256 | exclusive = ntohl(*p++); |
| 257 | if (!(p = nlm_decode_lock(p, &argp->lock))) |
| 258 | return 0; |
| 259 | if (exclusive) |
| 260 | argp->lock.fl.fl_type = F_WRLCK; |
| 261 | argp->reclaim = ntohl(*p++); |
| 262 | argp->state = ntohl(*p++); |
| 263 | argp->monitor = 1; /* monitor client by default */ |
| 264 | |
| 265 | return xdr_argsize_check(rqstp, p); |
| 266 | } |
| 267 | |
| 268 | int |
| 269 | nlmsvc_decode_cancargs(struct svc_rqst *rqstp, u32 *p, nlm_args *argp) |
| 270 | { |
| 271 | u32 exclusive; |
| 272 | |
| 273 | if (!(p = nlm_decode_cookie(p, &argp->cookie))) |
| 274 | return 0; |
| 275 | argp->block = ntohl(*p++); |
| 276 | exclusive = ntohl(*p++); |
| 277 | if (!(p = nlm_decode_lock(p, &argp->lock))) |
| 278 | return 0; |
| 279 | if (exclusive) |
| 280 | argp->lock.fl.fl_type = F_WRLCK; |
| 281 | return xdr_argsize_check(rqstp, p); |
| 282 | } |
| 283 | |
| 284 | int |
| 285 | nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, u32 *p, nlm_args *argp) |
| 286 | { |
| 287 | if (!(p = nlm_decode_cookie(p, &argp->cookie)) |
| 288 | || !(p = nlm_decode_lock(p, &argp->lock))) |
| 289 | return 0; |
| 290 | argp->lock.fl.fl_type = F_UNLCK; |
| 291 | return xdr_argsize_check(rqstp, p); |
| 292 | } |
| 293 | |
| 294 | int |
| 295 | nlmsvc_decode_shareargs(struct svc_rqst *rqstp, u32 *p, nlm_args *argp) |
| 296 | { |
| 297 | struct nlm_lock *lock = &argp->lock; |
| 298 | |
| 299 | memset(lock, 0, sizeof(*lock)); |
| 300 | locks_init_lock(&lock->fl); |
| 301 | lock->fl.fl_pid = ~(u32) 0; |
| 302 | |
| 303 | if (!(p = nlm_decode_cookie(p, &argp->cookie)) |
| 304 | || !(p = xdr_decode_string_inplace(p, &lock->caller, |
| 305 | &lock->len, NLM_MAXSTRLEN)) |
| 306 | || !(p = nlm_decode_fh(p, &lock->fh)) |
| 307 | || !(p = nlm_decode_oh(p, &lock->oh))) |
| 308 | return 0; |
| 309 | argp->fsm_mode = ntohl(*p++); |
| 310 | argp->fsm_access = ntohl(*p++); |
| 311 | return xdr_argsize_check(rqstp, p); |
| 312 | } |
| 313 | |
| 314 | int |
| 315 | nlmsvc_encode_shareres(struct svc_rqst *rqstp, u32 *p, struct nlm_res *resp) |
| 316 | { |
| 317 | if (!(p = nlm_encode_cookie(p, &resp->cookie))) |
| 318 | return 0; |
| 319 | *p++ = resp->status; |
| 320 | *p++ = xdr_zero; /* sequence argument */ |
| 321 | return xdr_ressize_check(rqstp, p); |
| 322 | } |
| 323 | |
| 324 | int |
| 325 | nlmsvc_encode_res(struct svc_rqst *rqstp, u32 *p, struct nlm_res *resp) |
| 326 | { |
| 327 | if (!(p = nlm_encode_cookie(p, &resp->cookie))) |
| 328 | return 0; |
| 329 | *p++ = resp->status; |
| 330 | return xdr_ressize_check(rqstp, p); |
| 331 | } |
| 332 | |
| 333 | int |
| 334 | nlmsvc_decode_notify(struct svc_rqst *rqstp, u32 *p, struct nlm_args *argp) |
| 335 | { |
| 336 | struct nlm_lock *lock = &argp->lock; |
| 337 | |
| 338 | if (!(p = xdr_decode_string_inplace(p, &lock->caller, |
| 339 | &lock->len, NLM_MAXSTRLEN))) |
| 340 | return 0; |
| 341 | argp->state = ntohl(*p++); |
| 342 | return xdr_argsize_check(rqstp, p); |
| 343 | } |
| 344 | |
| 345 | int |
| 346 | nlmsvc_decode_reboot(struct svc_rqst *rqstp, u32 *p, struct nlm_reboot *argp) |
| 347 | { |
| 348 | if (!(p = xdr_decode_string_inplace(p, &argp->mon, &argp->len, SM_MAXSTRLEN))) |
| 349 | return 0; |
| 350 | argp->state = ntohl(*p++); |
| 351 | /* Preserve the address in network byte order */ |
| 352 | argp->addr = *p++; |
| 353 | argp->vers = *p++; |
| 354 | argp->proto = *p++; |
| 355 | return xdr_argsize_check(rqstp, p); |
| 356 | } |
| 357 | |
| 358 | int |
| 359 | nlmsvc_decode_res(struct svc_rqst *rqstp, u32 *p, struct nlm_res *resp) |
| 360 | { |
| 361 | if (!(p = nlm_decode_cookie(p, &resp->cookie))) |
| 362 | return 0; |
| 363 | resp->status = ntohl(*p++); |
| 364 | return xdr_argsize_check(rqstp, p); |
| 365 | } |
| 366 | |
| 367 | int |
| 368 | nlmsvc_decode_void(struct svc_rqst *rqstp, u32 *p, void *dummy) |
| 369 | { |
| 370 | return xdr_argsize_check(rqstp, p); |
| 371 | } |
| 372 | |
| 373 | int |
| 374 | nlmsvc_encode_void(struct svc_rqst *rqstp, u32 *p, void *dummy) |
| 375 | { |
| 376 | return xdr_ressize_check(rqstp, p); |
| 377 | } |
| 378 | |
| 379 | /* |
| 380 | * Now, the client side XDR functions |
| 381 | */ |
| 382 | #ifdef NLMCLNT_SUPPORT_SHARES |
| 383 | static int |
| 384 | nlmclt_decode_void(struct rpc_rqst *req, u32 *p, void *ptr) |
| 385 | { |
| 386 | return 0; |
| 387 | } |
| 388 | #endif |
| 389 | |
| 390 | static int |
| 391 | nlmclt_encode_testargs(struct rpc_rqst *req, u32 *p, nlm_args *argp) |
| 392 | { |
| 393 | struct nlm_lock *lock = &argp->lock; |
| 394 | |
| 395 | if (!(p = nlm_encode_cookie(p, &argp->cookie))) |
| 396 | return -EIO; |
| 397 | *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; |
| 398 | if (!(p = nlm_encode_lock(p, lock))) |
| 399 | return -EIO; |
| 400 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | static int |
| 405 | nlmclt_decode_testres(struct rpc_rqst *req, u32 *p, struct nlm_res *resp) |
| 406 | { |
| 407 | if (!(p = nlm_decode_cookie(p, &resp->cookie))) |
| 408 | return -EIO; |
| 409 | resp->status = ntohl(*p++); |
| 410 | if (resp->status == NLM_LCK_DENIED) { |
| 411 | struct file_lock *fl = &resp->lock.fl; |
| 412 | u32 excl; |
| 413 | s32 start, len, end; |
| 414 | |
| 415 | memset(&resp->lock, 0, sizeof(resp->lock)); |
| 416 | locks_init_lock(fl); |
| 417 | excl = ntohl(*p++); |
| 418 | fl->fl_pid = ntohl(*p++); |
| 419 | if (!(p = nlm_decode_oh(p, &resp->lock.oh))) |
| 420 | return -EIO; |
| 421 | |
| 422 | fl->fl_flags = FL_POSIX; |
| 423 | fl->fl_type = excl? F_WRLCK : F_RDLCK; |
| 424 | start = ntohl(*p++); |
| 425 | len = ntohl(*p++); |
| 426 | end = start + len - 1; |
| 427 | |
| 428 | fl->fl_start = s32_to_loff_t(start); |
| 429 | if (len == 0 || end < 0) |
| 430 | fl->fl_end = OFFSET_MAX; |
| 431 | else |
| 432 | fl->fl_end = s32_to_loff_t(end); |
| 433 | } |
| 434 | return 0; |
| 435 | } |
| 436 | |
| 437 | |
| 438 | static int |
| 439 | nlmclt_encode_lockargs(struct rpc_rqst *req, u32 *p, nlm_args *argp) |
| 440 | { |
| 441 | struct nlm_lock *lock = &argp->lock; |
| 442 | |
| 443 | if (!(p = nlm_encode_cookie(p, &argp->cookie))) |
| 444 | return -EIO; |
| 445 | *p++ = argp->block? xdr_one : xdr_zero; |
| 446 | *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; |
| 447 | if (!(p = nlm_encode_lock(p, lock))) |
| 448 | return -EIO; |
| 449 | *p++ = argp->reclaim? xdr_one : xdr_zero; |
| 450 | *p++ = htonl(argp->state); |
| 451 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 452 | return 0; |
| 453 | } |
| 454 | |
| 455 | static int |
| 456 | nlmclt_encode_cancargs(struct rpc_rqst *req, u32 *p, nlm_args *argp) |
| 457 | { |
| 458 | struct nlm_lock *lock = &argp->lock; |
| 459 | |
| 460 | if (!(p = nlm_encode_cookie(p, &argp->cookie))) |
| 461 | return -EIO; |
| 462 | *p++ = argp->block? xdr_one : xdr_zero; |
| 463 | *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero; |
| 464 | if (!(p = nlm_encode_lock(p, lock))) |
| 465 | return -EIO; |
| 466 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | static int |
| 471 | nlmclt_encode_unlockargs(struct rpc_rqst *req, u32 *p, nlm_args *argp) |
| 472 | { |
| 473 | struct nlm_lock *lock = &argp->lock; |
| 474 | |
| 475 | if (!(p = nlm_encode_cookie(p, &argp->cookie))) |
| 476 | return -EIO; |
| 477 | if (!(p = nlm_encode_lock(p, lock))) |
| 478 | return -EIO; |
| 479 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 480 | return 0; |
| 481 | } |
| 482 | |
| 483 | static int |
| 484 | nlmclt_encode_res(struct rpc_rqst *req, u32 *p, struct nlm_res *resp) |
| 485 | { |
| 486 | if (!(p = nlm_encode_cookie(p, &resp->cookie))) |
| 487 | return -EIO; |
| 488 | *p++ = resp->status; |
| 489 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 490 | return 0; |
| 491 | } |
| 492 | |
| 493 | static int |
| 494 | nlmclt_encode_testres(struct rpc_rqst *req, u32 *p, struct nlm_res *resp) |
| 495 | { |
| 496 | if (!(p = nlm_encode_testres(p, resp))) |
| 497 | return -EIO; |
| 498 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 499 | return 0; |
| 500 | } |
| 501 | |
| 502 | static int |
| 503 | nlmclt_decode_res(struct rpc_rqst *req, u32 *p, struct nlm_res *resp) |
| 504 | { |
| 505 | if (!(p = nlm_decode_cookie(p, &resp->cookie))) |
| 506 | return -EIO; |
| 507 | resp->status = ntohl(*p++); |
| 508 | return 0; |
| 509 | } |
| 510 | |
| 511 | /* |
| 512 | * Buffer requirements for NLM |
| 513 | */ |
| 514 | #define NLM_void_sz 0 |
| 515 | #define NLM_cookie_sz 1+XDR_QUADLEN(NLM_MAXCOOKIELEN) |
| 516 | #define NLM_caller_sz 1+XDR_QUADLEN(sizeof(system_utsname.nodename)) |
| 517 | #define NLM_netobj_sz 1+XDR_QUADLEN(XDR_MAX_NETOBJ) |
| 518 | /* #define NLM_owner_sz 1+XDR_QUADLEN(NLM_MAXOWNER) */ |
| 519 | #define NLM_fhandle_sz 1+XDR_QUADLEN(NFS2_FHSIZE) |
| 520 | #define NLM_lock_sz 3+NLM_caller_sz+NLM_netobj_sz+NLM_fhandle_sz |
| 521 | #define NLM_holder_sz 4+NLM_netobj_sz |
| 522 | |
| 523 | #define NLM_testargs_sz NLM_cookie_sz+1+NLM_lock_sz |
| 524 | #define NLM_lockargs_sz NLM_cookie_sz+4+NLM_lock_sz |
| 525 | #define NLM_cancargs_sz NLM_cookie_sz+2+NLM_lock_sz |
| 526 | #define NLM_unlockargs_sz NLM_cookie_sz+NLM_lock_sz |
| 527 | |
| 528 | #define NLM_testres_sz NLM_cookie_sz+1+NLM_holder_sz |
| 529 | #define NLM_res_sz NLM_cookie_sz+1 |
| 530 | #define NLM_norep_sz 0 |
| 531 | |
| 532 | #ifndef MAX |
| 533 | # define MAX(a, b) (((a) > (b))? (a) : (b)) |
| 534 | #endif |
| 535 | |
| 536 | /* |
| 537 | * For NLM, a void procedure really returns nothing |
| 538 | */ |
| 539 | #define nlmclt_decode_norep NULL |
| 540 | |
| 541 | #define PROC(proc, argtype, restype) \ |
| 542 | [NLMPROC_##proc] = { \ |
| 543 | .p_proc = NLMPROC_##proc, \ |
| 544 | .p_encode = (kxdrproc_t) nlmclt_encode_##argtype, \ |
| 545 | .p_decode = (kxdrproc_t) nlmclt_decode_##restype, \ |
| 546 | .p_bufsiz = MAX(NLM_##argtype##_sz, NLM_##restype##_sz) << 2 \ |
| 547 | } |
| 548 | |
| 549 | static struct rpc_procinfo nlm_procedures[] = { |
| 550 | PROC(TEST, testargs, testres), |
| 551 | PROC(LOCK, lockargs, res), |
| 552 | PROC(CANCEL, cancargs, res), |
| 553 | PROC(UNLOCK, unlockargs, res), |
| 554 | PROC(GRANTED, testargs, res), |
| 555 | PROC(TEST_MSG, testargs, norep), |
| 556 | PROC(LOCK_MSG, lockargs, norep), |
| 557 | PROC(CANCEL_MSG, cancargs, norep), |
| 558 | PROC(UNLOCK_MSG, unlockargs, norep), |
| 559 | PROC(GRANTED_MSG, testargs, norep), |
| 560 | PROC(TEST_RES, testres, norep), |
| 561 | PROC(LOCK_RES, res, norep), |
| 562 | PROC(CANCEL_RES, res, norep), |
| 563 | PROC(UNLOCK_RES, res, norep), |
| 564 | PROC(GRANTED_RES, res, norep), |
| 565 | #ifdef NLMCLNT_SUPPORT_SHARES |
| 566 | PROC(SHARE, shareargs, shareres), |
| 567 | PROC(UNSHARE, shareargs, shareres), |
| 568 | PROC(NM_LOCK, lockargs, res), |
| 569 | PROC(FREE_ALL, notify, void), |
| 570 | #endif |
| 571 | }; |
| 572 | |
| 573 | static struct rpc_version nlm_version1 = { |
| 574 | .number = 1, |
| 575 | .nrprocs = 16, |
| 576 | .procs = nlm_procedures, |
| 577 | }; |
| 578 | |
| 579 | static struct rpc_version nlm_version3 = { |
| 580 | .number = 3, |
| 581 | .nrprocs = 24, |
| 582 | .procs = nlm_procedures, |
| 583 | }; |
| 584 | |
| 585 | #ifdef CONFIG_LOCKD_V4 |
| 586 | extern struct rpc_version nlm_version4; |
| 587 | #endif |
| 588 | |
| 589 | static struct rpc_version * nlm_versions[] = { |
| 590 | [1] = &nlm_version1, |
| 591 | [3] = &nlm_version3, |
| 592 | #ifdef CONFIG_LOCKD_V4 |
| 593 | [4] = &nlm_version4, |
| 594 | #endif |
| 595 | }; |
| 596 | |
| 597 | static struct rpc_stat nlm_stats; |
| 598 | |
| 599 | struct rpc_program nlm_program = { |
| 600 | .name = "lockd", |
| 601 | .number = NLM_PROGRAM, |
| 602 | .nrvers = sizeof(nlm_versions) / sizeof(nlm_versions[0]), |
| 603 | .version = nlm_versions, |
| 604 | .stats = &nlm_stats, |
| 605 | }; |
| 606 | |
| 607 | #ifdef RPC_DEBUG |
| 608 | const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie) |
| 609 | { |
| 610 | /* |
| 611 | * We can get away with a static buffer because we're only |
| 612 | * called with BKL held. |
| 613 | */ |
| 614 | static char buf[2*NLM_MAXCOOKIELEN+1]; |
| 615 | int i; |
| 616 | int len = sizeof(buf); |
| 617 | char *p = buf; |
| 618 | |
| 619 | len--; /* allow for trailing \0 */ |
| 620 | if (len < 3) |
| 621 | return "???"; |
| 622 | for (i = 0 ; i < cookie->len ; i++) { |
| 623 | if (len < 2) { |
| 624 | strcpy(p-3, "..."); |
| 625 | break; |
| 626 | } |
| 627 | sprintf(p, "%02x", cookie->data[i]); |
| 628 | p += 2; |
| 629 | len -= 2; |
| 630 | } |
| 631 | *p = '\0'; |
| 632 | |
| 633 | return buf; |
| 634 | } |
| 635 | #endif |