1// SPDX-License-Identifier: GPL-2.0-or-later 2/* /proc interface for AFS 3 * 4 * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. 5 * Written by David Howells (dhowells@redhat.com) 6 */ 7 8#include <linux/slab.h> 9#include <linux/module.h> 10#include <linux/proc_fs.h> 11#include <linux/seq_file.h> 12#include <linux/sched.h> 13#include <linux/uaccess.h> 14#include "internal.h" 15 16struct afs_vl_seq_net_private { 17 struct seq_net_private seq; /* Must be first */ 18 struct afs_vlserver_list *vllist; 19}; 20 21static inline struct afs_net *afs_seq2net(struct seq_file *m) 22{ 23 return afs_net(seq_file_net(m)); 24} 25 26static inline struct afs_net *afs_seq2net_single(struct seq_file *m) 27{ 28 return afs_net(seq_file_single_net(m)); 29} 30 31/* 32 * Display the list of cells known to the namespace. 33 */ 34static int afs_proc_cells_show(struct seq_file *m, void *v) 35{ 36 struct afs_vlserver_list *vllist; 37 struct afs_cell *cell; 38 39 if (v == SEQ_START_TOKEN) { 40 /* display header on line 1 */ 41 seq_puts(m, "USE ACT TTL SV ST NAME\n"); 42 return 0; 43 } 44 45 cell = list_entry(v, struct afs_cell, proc_link); 46 vllist = rcu_dereference(cell->vl_servers); 47 48 /* display one cell per line on subsequent lines */ 49 seq_printf(m, "%3u %3u %6lld %2u %2u %s\n", 50 refcount_read(&cell->ref), 51 atomic_read(&cell->active), 52 cell->dns_expiry - ktime_get_real_seconds(), 53 vllist ? vllist->nr_servers : 0, 54 cell->state, 55 cell->name); 56 return 0; 57} 58 59static void *afs_proc_cells_start(struct seq_file *m, loff_t *_pos) 60 __acquires(rcu) 61{ 62 rcu_read_lock(); 63 return seq_hlist_start_head_rcu(&afs_seq2net(m)->proc_cells, *_pos); 64} 65 66static void *afs_proc_cells_next(struct seq_file *m, void *v, loff_t *pos) 67{ 68 return seq_hlist_next_rcu(v, &afs_seq2net(m)->proc_cells, pos); 69} 70 71static void afs_proc_cells_stop(struct seq_file *m, void *v) 72 __releases(rcu) 73{ 74 rcu_read_unlock(); 75} 76 77static const struct seq_operations afs_proc_cells_ops = { 78 .start = afs_proc_cells_start, 79 .next = afs_proc_cells_next, 80 .stop = afs_proc_cells_stop, 81 .show = afs_proc_cells_show, 82}; 83 84/* 85 * handle writes to /proc/fs/afs/cells 86 * - to add cells: echo "add <cellname> <IP>[:<IP>][:<IP>]" 87 */ 88static int afs_proc_cells_write(struct file *file, char *buf, size_t size) 89{ 90 struct seq_file *m = file->private_data; 91 struct afs_net *net = afs_seq2net(m); 92 char *name, *args; 93 int ret; 94 95 /* trim to first NL */ 96 name = memchr(buf, '\n', size); 97 if (name) 98 *name = 0; 99 100 /* split into command, name and argslist */ 101 name = strchr(buf, ' '); 102 if (!name) 103 goto inval; 104 do { 105 *name++ = 0; 106 } while(*name == ' '); 107 if (!*name) 108 goto inval; 109 110 args = strchr(name, ' '); 111 if (args) { 112 do { 113 *args++ = 0; 114 } while(*args == ' '); 115 if (!*args) 116 goto inval; 117 } 118 119 /* determine command to perform */ 120 _debug("cmd=%s name=%s args=%s", buf, name, args); 121 122 if (strcmp(buf, "add") == 0) { 123 struct afs_cell *cell; 124 125 cell = afs_lookup_cell(net, name, strlen(name), args, true); 126 if (IS_ERR(cell)) { 127 ret = PTR_ERR(cell); 128 goto done; 129 } 130 131 if (test_and_set_bit(AFS_CELL_FL_NO_GC, &cell->flags)) 132 afs_unuse_cell(net, cell, afs_cell_trace_unuse_no_pin); 133 } else { 134 goto inval; 135 } 136 137 ret = 0; 138 139done: 140 _leave(" = %d", ret); 141 return ret; 142 143inval: 144 ret = -EINVAL; 145 printk("kAFS: Invalid Command on /proc/fs/afs/cells file\n"); 146 goto done; 147} 148 149/* 150 * Display the list of addr_prefs known to the namespace. 151 */ 152static int afs_proc_addr_prefs_show(struct seq_file *m, void *v) 153{ 154 struct afs_addr_preference_list *preflist; 155 struct afs_addr_preference *pref; 156 struct afs_net *net = afs_seq2net_single(m); 157 union { 158 struct sockaddr_in sin; 159 struct sockaddr_in6 sin6; 160 } addr; 161 unsigned int i; 162 char buf[44]; /* Maximum ipv6 + max subnet is 43 */ 163 164 rcu_read_lock(); 165 preflist = rcu_dereference(net->address_prefs); 166 167 if (!preflist) { 168 seq_puts(m, "NO PREFS\n"); 169 goto out; 170 } 171 172 seq_printf(m, "PROT SUBNET PRIOR (v=%u n=%u/%u/%u)\n", 173 preflist->version, preflist->ipv6_off, preflist->nr, preflist->max_prefs); 174 175 memset(&addr, 0, sizeof(addr)); 176 177 for (i = 0; i < preflist->nr; i++) { 178 pref = &preflist->prefs[i]; 179 180 addr.sin.sin_family = pref->family; 181 if (pref->family == AF_INET) { 182 memcpy(&addr.sin.sin_addr, &pref->ipv4_addr, 183 sizeof(addr.sin.sin_addr)); 184 snprintf(buf, sizeof(buf), "%pISc/%u", &addr.sin, pref->subnet_mask); 185 seq_printf(m, "UDP %-43.43s %5u\n", buf, pref->prio); 186 } else { 187 memcpy(&addr.sin6.sin6_addr, &pref->ipv6_addr, 188 sizeof(addr.sin6.sin6_addr)); 189 snprintf(buf, sizeof(buf), "%pISc/%u", &addr.sin6, pref->subnet_mask); 190 seq_printf(m, "UDP %-43.43s %5u\n", buf, pref->prio); 191 } 192 } 193 194out: 195 rcu_read_unlock(); 196 return 0; 197} 198 199/* 200 * Display the name of the current workstation cell. 201 */ 202static int afs_proc_rootcell_show(struct seq_file *m, void *v) 203{ 204 struct afs_cell *cell; 205 struct afs_net *net; 206 207 net = afs_seq2net_single(m); 208 down_read(&net->cells_lock); 209 cell = net->ws_cell; 210 if (cell) 211 seq_printf(m, "%s\n", cell->name); 212 up_read(&net->cells_lock); 213 return 0; 214} 215 216/* 217 * Set the current workstation cell and optionally supply its list of volume 218 * location servers. 219 * 220 * echo "cell.name:192.168.231.14" >/proc/fs/afs/rootcell 221 */ 222static int afs_proc_rootcell_write(struct file *file, char *buf, size_t size) 223{ 224 struct seq_file *m = file->private_data; 225 struct afs_net *net = afs_seq2net_single(m); 226 char *s; 227 int ret; 228 229 ret = -EINVAL; 230 if (buf[0] == '.') 231 goto out; 232 if (memchr(buf, '/', size)) 233 goto out; 234 235 /* trim to first NL */ 236 s = memchr(buf, '\n', size); 237 if (s) 238 *s = 0; 239 240 /* determine command to perform */ 241 _debug("rootcell=%s", buf); 242 243 ret = afs_cell_init(net, buf); 244 245out: 246 _leave(" = %d", ret); 247 return ret; 248} 249 250static const char afs_vol_types[3][3] = { 251 [AFSVL_RWVOL] = "RW", 252 [AFSVL_ROVOL] = "RO", 253 [AFSVL_BACKVOL] = "BK", 254}; 255 256/* 257 * Display the list of volumes known to a cell. 258 */ 259static int afs_proc_cell_volumes_show(struct seq_file *m, void *v) 260{ 261 struct afs_volume *vol = hlist_entry(v, struct afs_volume, proc_link); 262 263 /* Display header on line 1 */ 264 if (v == SEQ_START_TOKEN) { 265 seq_puts(m, "USE VID TY NAME\n"); 266 return 0; 267 } 268 269 seq_printf(m, "%3d %08llx %s %s\n", 270 refcount_read(&vol->ref), vol->vid, 271 afs_vol_types[vol->type], 272 vol->name); 273 274 return 0; 275} 276 277static void *afs_proc_cell_volumes_start(struct seq_file *m, loff_t *_pos) 278 __acquires(cell->proc_lock) 279{ 280 struct afs_cell *cell = pde_data(file_inode(m->file)); 281 282 rcu_read_lock(); 283 return seq_hlist_start_head_rcu(&cell->proc_volumes, *_pos); 284} 285 286static void *afs_proc_cell_volumes_next(struct seq_file *m, void *v, 287 loff_t *_pos) 288{ 289 struct afs_cell *cell = pde_data(file_inode(m->file)); 290 291 return seq_hlist_next_rcu(v, &cell->proc_volumes, _pos); 292} 293 294static void afs_proc_cell_volumes_stop(struct seq_file *m, void *v) 295 __releases(cell->proc_lock) 296{ 297 rcu_read_unlock(); 298} 299 300static const struct seq_operations afs_proc_cell_volumes_ops = { 301 .start = afs_proc_cell_volumes_start, 302 .next = afs_proc_cell_volumes_next, 303 .stop = afs_proc_cell_volumes_stop, 304 .show = afs_proc_cell_volumes_show, 305}; 306 307static const char *const dns_record_sources[NR__dns_record_source + 1] = { 308 [DNS_RECORD_UNAVAILABLE] = "unav", 309 [DNS_RECORD_FROM_CONFIG] = "cfg", 310 [DNS_RECORD_FROM_DNS_A] = "A", 311 [DNS_RECORD_FROM_DNS_AFSDB] = "AFSDB", 312 [DNS_RECORD_FROM_DNS_SRV] = "SRV", 313 [DNS_RECORD_FROM_NSS] = "nss", 314 [NR__dns_record_source] = "[weird]" 315}; 316 317static const char *const dns_lookup_statuses[NR__dns_lookup_status + 1] = { 318 [DNS_LOOKUP_NOT_DONE] = "no-lookup", 319 [DNS_LOOKUP_GOOD] = "good", 320 [DNS_LOOKUP_GOOD_WITH_BAD] = "good/bad", 321 [DNS_LOOKUP_BAD] = "bad", 322 [DNS_LOOKUP_GOT_NOT_FOUND] = "not-found", 323 [DNS_LOOKUP_GOT_LOCAL_FAILURE] = "local-failure", 324 [DNS_LOOKUP_GOT_TEMP_FAILURE] = "temp-failure", 325 [DNS_LOOKUP_GOT_NS_FAILURE] = "ns-failure", 326 [NR__dns_lookup_status] = "[weird]" 327}; 328 329/* 330 * Display the list of Volume Location servers we're using for a cell. 331 */ 332static int afs_proc_cell_vlservers_show(struct seq_file *m, void *v) 333{ 334 const struct afs_vl_seq_net_private *priv = m->private; 335 const struct afs_vlserver_list *vllist = priv->vllist; 336 const struct afs_vlserver_entry *entry; 337 const struct afs_vlserver *vlserver; 338 const struct afs_addr_list *alist; 339 int i; 340 341 if (v == SEQ_START_TOKEN) { 342 seq_printf(m, "# source %s, status %s\n", 343 dns_record_sources[vllist ? vllist->source : 0], 344 dns_lookup_statuses[vllist ? vllist->status : 0]); 345 return 0; 346 } 347 348 entry = v; 349 vlserver = entry->server; 350 alist = rcu_dereference(vlserver->addresses); 351 352 seq_printf(m, "%s [p=%hu w=%hu s=%s,%s]:\n", 353 vlserver->name, entry->priority, entry->weight, 354 dns_record_sources[alist ? alist->source : entry->source], 355 dns_lookup_statuses[alist ? alist->status : entry->status]); 356 if (alist) { 357 for (i = 0; i < alist->nr_addrs; i++) 358 seq_printf(m, " %c %pISpc\n", 359 alist->preferred == i ? '>' : '-', 360 rxrpc_kernel_remote_addr(alist->addrs[i].peer)); 361 } 362 seq_printf(m, " info: fl=%lx rtt=%d\n", vlserver->flags, vlserver->rtt); 363 seq_printf(m, " probe: fl=%x e=%d ac=%d out=%d\n", 364 vlserver->probe.flags, vlserver->probe.error, 365 vlserver->probe.abort_code, 366 atomic_read(&vlserver->probe_outstanding)); 367 return 0; 368} 369 370static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos) 371 __acquires(rcu) 372{ 373 struct afs_vl_seq_net_private *priv = m->private; 374 struct afs_vlserver_list *vllist; 375 struct afs_cell *cell = pde_data(file_inode(m->file)); 376 loff_t pos = *_pos; 377 378 rcu_read_lock(); 379 380 vllist = rcu_dereference(cell->vl_servers); 381 priv->vllist = vllist; 382 383 if (pos < 0) 384 *_pos = pos = 0; 385 if (pos == 0) 386 return SEQ_START_TOKEN; 387 388 if (pos - 1 >= vllist->nr_servers) 389 return NULL; 390 391 return &vllist->servers[pos - 1]; 392} 393 394static void *afs_proc_cell_vlservers_next(struct seq_file *m, void *v, 395 loff_t *_pos) 396{ 397 struct afs_vl_seq_net_private *priv = m->private; 398 struct afs_vlserver_list *vllist = priv->vllist; 399 loff_t pos; 400 401 pos = *_pos; 402 pos++; 403 *_pos = pos; 404 if (!vllist || pos - 1 >= vllist->nr_servers) 405 return NULL; 406 407 return &vllist->servers[pos - 1]; 408} 409 410static void afs_proc_cell_vlservers_stop(struct seq_file *m, void *v) 411 __releases(rcu) 412{ 413 rcu_read_unlock(); 414} 415 416static const struct seq_operations afs_proc_cell_vlservers_ops = { 417 .start = afs_proc_cell_vlservers_start, 418 .next = afs_proc_cell_vlservers_next, 419 .stop = afs_proc_cell_vlservers_stop, 420 .show = afs_proc_cell_vlservers_show, 421}; 422 423/* 424 * Display the list of fileservers we're using within a namespace. 425 */ 426static int afs_proc_servers_show(struct seq_file *m, void *v) 427{ 428 struct afs_endpoint_state *estate; 429 struct afs_addr_list *alist; 430 struct afs_server *server; 431 unsigned long failed; 432 int i; 433 434 if (v == SEQ_START_TOKEN) { 435 seq_puts(m, "UUID REF ACT CELL\n"); 436 return 0; 437 } 438 439 server = list_entry(v, struct afs_server, proc_link); 440 estate = rcu_dereference(server->endpoint_state); 441 alist = estate->addresses; 442 seq_printf(m, "%pU %3d %3d %s\n", 443 &server->uuid, 444 refcount_read(&server->ref), 445 atomic_read(&server->active), 446 server->cell->name); 447 seq_printf(m, " - info: fl=%lx rtt=%u\n", 448 server->flags, server->rtt); 449 seq_printf(m, " - probe: last=%d\n", 450 (int)(jiffies - server->probed_at) / HZ); 451 failed = estate->failed_set; 452 seq_printf(m, " - ESTATE pq=%x np=%u rsp=%lx f=%lx\n", 453 estate->probe_seq, atomic_read(&estate->nr_probing), 454 estate->responsive_set, estate->failed_set); 455 seq_printf(m, " - ALIST v=%u ap=%u\n", 456 alist->version, alist->addr_pref_version); 457 for (i = 0; i < alist->nr_addrs; i++) { 458 const struct afs_address *addr = &alist->addrs[i]; 459 460 seq_printf(m, " [%x] %pISpc%s rtt=%d err=%d p=%u\n", 461 i, rxrpc_kernel_remote_addr(addr->peer), 462 alist->preferred == i ? "*" : 463 test_bit(i, &failed) ? "!" : "", 464 rxrpc_kernel_get_srtt(addr->peer), 465 addr->last_error, addr->prio); 466 } 467 return 0; 468} 469 470static void *afs_proc_servers_start(struct seq_file *m, loff_t *_pos) 471 __acquires(rcu) 472{ 473 rcu_read_lock(); 474 return seq_hlist_start_head_rcu(&afs_seq2net(m)->fs_proc, *_pos); 475} 476 477static void *afs_proc_servers_next(struct seq_file *m, void *v, loff_t *_pos) 478{ 479 return seq_hlist_next_rcu(v, &afs_seq2net(m)->fs_proc, _pos); 480} 481 482static void afs_proc_servers_stop(struct seq_file *m, void *v) 483 __releases(rcu) 484{ 485 rcu_read_unlock(); 486} 487 488static const struct seq_operations afs_proc_servers_ops = { 489 .start = afs_proc_servers_start, 490 .next = afs_proc_servers_next, 491 .stop = afs_proc_servers_stop, 492 .show = afs_proc_servers_show, 493}; 494 495/* 496 * Display the list of strings that may be substituted for the @sys pathname 497 * macro. 498 */ 499static int afs_proc_sysname_show(struct seq_file *m, void *v) 500{ 501 struct afs_net *net = afs_seq2net(m); 502 struct afs_sysnames *sysnames = net->sysnames; 503 unsigned int i = (unsigned long)v - 1; 504 505 if (i < sysnames->nr) 506 seq_printf(m, "%s\n", sysnames->subs[i]); 507 return 0; 508} 509 510static void *afs_proc_sysname_start(struct seq_file *m, loff_t *pos) 511 __acquires(&net->sysnames_lock) 512{ 513 struct afs_net *net = afs_seq2net(m); 514 struct afs_sysnames *names; 515 516 read_lock(&net->sysnames_lock); 517 518 names = net->sysnames; 519 if (*pos >= names->nr) 520 return NULL; 521 return (void *)(unsigned long)(*pos + 1); 522} 523 524static void *afs_proc_sysname_next(struct seq_file *m, void *v, loff_t *pos) 525{ 526 struct afs_net *net = afs_seq2net(m); 527 struct afs_sysnames *names = net->sysnames; 528 529 *pos += 1; 530 if (*pos >= names->nr) 531 return NULL; 532 return (void *)(unsigned long)(*pos + 1); 533} 534 535static void afs_proc_sysname_stop(struct seq_file *m, void *v) 536 __releases(&net->sysnames_lock) 537{ 538 struct afs_net *net = afs_seq2net(m); 539 540 read_unlock(&net->sysnames_lock); 541} 542 543static const struct seq_operations afs_proc_sysname_ops = { 544 .start = afs_proc_sysname_start, 545 .next = afs_proc_sysname_next, 546 .stop = afs_proc_sysname_stop, 547 .show = afs_proc_sysname_show, 548}; 549 550/* 551 * Allow the @sys substitution to be configured. 552 */ 553static int afs_proc_sysname_write(struct file *file, char *buf, size_t size) 554{ 555 struct afs_sysnames *sysnames, *kill; 556 struct seq_file *m = file->private_data; 557 struct afs_net *net = afs_seq2net(m); 558 char *s, *p, *sub; 559 int ret, len; 560 561 sysnames = kzalloc(sizeof(*sysnames), GFP_KERNEL); 562 if (!sysnames) 563 return -ENOMEM; 564 refcount_set(&sysnames->usage, 1); 565 kill = sysnames; 566 567 p = buf; 568 while ((s = strsep(&p, " \t\n"))) { 569 len = strlen(s); 570 if (len == 0) 571 continue; 572 ret = -ENAMETOOLONG; 573 if (len >= AFSNAMEMAX) 574 goto error; 575 576 if (len >= 4 && 577 s[len - 4] == '@' && 578 s[len - 3] == 's' && 579 s[len - 2] == 'y' && 580 s[len - 1] == 's') 581 /* Protect against recursion */ 582 goto invalid; 583 584 if (s[0] == '.' && 585 (len < 2 || (len == 2 && s[1] == '.'))) 586 goto invalid; 587 588 if (memchr(s, '/', len)) 589 goto invalid; 590 591 ret = -EFBIG; 592 if (sysnames->nr >= AFS_NR_SYSNAME) 593 goto out; 594 595 if (strcmp(s, afs_init_sysname) == 0) { 596 sub = (char *)afs_init_sysname; 597 } else { 598 ret = -ENOMEM; 599 sub = kmemdup(s, len + 1, GFP_KERNEL); 600 if (!sub) 601 goto out; 602 } 603 604 sysnames->subs[sysnames->nr] = sub; 605 sysnames->nr++; 606 } 607 608 if (sysnames->nr == 0) { 609 sysnames->subs[0] = sysnames->blank; 610 sysnames->nr++; 611 } 612 613 write_lock(&net->sysnames_lock); 614 kill = net->sysnames; 615 net->sysnames = sysnames; 616 write_unlock(&net->sysnames_lock); 617 ret = 0; 618out: 619 afs_put_sysnames(kill); 620 return ret; 621 622invalid: 623 ret = -EINVAL; 624error: 625 goto out; 626} 627 628void afs_put_sysnames(struct afs_sysnames *sysnames) 629{ 630 int i; 631 632 if (sysnames && refcount_dec_and_test(&sysnames->usage)) { 633 for (i = 0; i < sysnames->nr; i++) 634 if (sysnames->subs[i] != afs_init_sysname && 635 sysnames->subs[i] != sysnames->blank) 636 kfree(sysnames->subs[i]); 637 kfree(sysnames); 638 } 639} 640 641/* 642 * Display general per-net namespace statistics 643 */ 644static int afs_proc_stats_show(struct seq_file *m, void *v) 645{ 646 struct afs_net *net = afs_seq2net_single(m); 647 648 seq_puts(m, "kAFS statistics\n"); 649 650 seq_printf(m, "dir-mgmt: look=%u reval=%u inval=%u relpg=%u\n", 651 atomic_read(&net->n_lookup), 652 atomic_read(&net->n_reval), 653 atomic_read(&net->n_inval), 654 atomic_read(&net->n_relpg)); 655 656 seq_printf(m, "dir-data: rdpg=%u\n", 657 atomic_read(&net->n_read_dir)); 658 659 seq_printf(m, "dir-edit: cr=%u rm=%u\n", 660 atomic_read(&net->n_dir_cr), 661 atomic_read(&net->n_dir_rm)); 662 663 seq_printf(m, "file-rd : n=%u nb=%lu\n", 664 atomic_read(&net->n_fetches), 665 atomic_long_read(&net->n_fetch_bytes)); 666 seq_printf(m, "file-wr : n=%u nb=%lu\n", 667 atomic_read(&net->n_stores), 668 atomic_long_read(&net->n_store_bytes)); 669 return 0; 670} 671 672/* 673 * initialise /proc/fs/afs/<cell>/ 674 */ 675int afs_proc_cell_setup(struct afs_cell *cell) 676{ 677 struct proc_dir_entry *dir; 678 struct afs_net *net = cell->net; 679 680 _enter("%p{%s},%p", cell, cell->name, net->proc_afs); 681 682 dir = proc_net_mkdir(net->net, cell->name, net->proc_afs); 683 if (!dir) 684 goto error_dir; 685 686 if (!proc_create_net_data("vlservers", 0444, dir, 687 &afs_proc_cell_vlservers_ops, 688 sizeof(struct afs_vl_seq_net_private), 689 cell) || 690 !proc_create_net_data("volumes", 0444, dir, 691 &afs_proc_cell_volumes_ops, 692 sizeof(struct seq_net_private), 693 cell)) 694 goto error_tree; 695 696 _leave(" = 0"); 697 return 0; 698 699error_tree: 700 remove_proc_subtree(cell->name, net->proc_afs); 701error_dir: 702 _leave(" = -ENOMEM"); 703 return -ENOMEM; 704} 705 706/* 707 * remove /proc/fs/afs/<cell>/ 708 */ 709void afs_proc_cell_remove(struct afs_cell *cell) 710{ 711 struct afs_net *net = cell->net; 712 713 _enter(""); 714 remove_proc_subtree(cell->name, net->proc_afs); 715 _leave(""); 716} 717 718/* 719 * initialise the /proc/fs/afs/ directory 720 */ 721int afs_proc_init(struct afs_net *net) 722{ 723 struct proc_dir_entry *p; 724 725 _enter(""); 726 727 p = proc_net_mkdir(net->net, "afs", net->net->proc_net); 728 if (!p) 729 goto error_dir; 730 731 if (!proc_create_net_data_write("cells", 0644, p, 732 &afs_proc_cells_ops, 733 afs_proc_cells_write, 734 sizeof(struct seq_net_private), 735 NULL) || 736 !proc_create_net_single_write("rootcell", 0644, p, 737 afs_proc_rootcell_show, 738 afs_proc_rootcell_write, 739 NULL) || 740 !proc_create_net("servers", 0444, p, &afs_proc_servers_ops, 741 sizeof(struct seq_net_private)) || 742 !proc_create_net_single("stats", 0444, p, afs_proc_stats_show, NULL) || 743 !proc_create_net_data_write("sysname", 0644, p, 744 &afs_proc_sysname_ops, 745 afs_proc_sysname_write, 746 sizeof(struct seq_net_private), 747 NULL) || 748 !proc_create_net_single_write("addr_prefs", 0644, p, 749 afs_proc_addr_prefs_show, 750 afs_proc_addr_prefs_write, 751 NULL)) 752 goto error_tree; 753 754 net->proc_afs = p; 755 _leave(" = 0"); 756 return 0; 757 758error_tree: 759 proc_remove(p); 760error_dir: 761 _leave(" = -ENOMEM"); 762 return -ENOMEM; 763} 764 765/* 766 * clean up the /proc/fs/afs/ directory 767 */ 768void afs_proc_cleanup(struct afs_net *net) 769{ 770 proc_remove(net->proc_afs); 771 net->proc_afs = NULL; 772} 773