1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * 4 * Copyright (C) International Business Machines Corp., 2000,2005 5 * 6 * Modified by Steve French (sfrench@us.ibm.com) 7 */ 8 #include <linux/fs.h> 9 #include <linux/string.h> 10 #include <linux/ctype.h> 11 #include <linux/kstrtox.h> 12 #include <linux/module.h> 13 #include <linux/proc_fs.h> 14 #include <linux/uaccess.h> 15 #include <uapi/linux/ethtool.h> 16 #include "cifsglob.h" 17 #include "cifsproto.h" 18 #include "cifs_debug.h" 19 #include "cifsfs.h" 20 #include "fs_context.h" 21 #ifdef CONFIG_CIFS_DFS_UPCALL 22 #include "dfs_cache.h" 23 #endif 24 #ifdef CONFIG_CIFS_SMB_DIRECT 25 #include "smbdirect.h" 26 #endif 27 #include "cifs_swn.h" 28 #include "cached_dir.h" 29 30 void 31 cifs_dump_mem(char *label, void *data, int length) 32 { 33 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data); 34 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4, 35 data, length, true); 36 } 37 38 void cifs_dump_mids(struct TCP_Server_Info *server) 39 { 40 #ifdef CONFIG_CIFS_DEBUG2 41 struct mid_q_entry *mid_entry; 42 43 if (server == NULL) 44 return; 45 46 cifs_dbg(VFS, "Dump pending requests:\n"); 47 spin_lock(&server->mid_queue_lock); 48 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) { 49 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n", 50 mid_entry->mid_state, 51 le16_to_cpu(mid_entry->command), 52 mid_entry->pid, 53 mid_entry->callback_data, 54 mid_entry->mid); 55 #ifdef CONFIG_CIFS_STATS2 56 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n", 57 mid_entry->large_buf, 58 mid_entry->resp_buf, 59 mid_entry->when_received, 60 jiffies); 61 #endif /* STATS2 */ 62 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n", 63 mid_entry->multiRsp, mid_entry->multiEnd); 64 if (mid_entry->resp_buf) { 65 server->ops->dump_detail(mid_entry->resp_buf, 66 mid_entry->response_pdu_len, server); 67 cifs_dump_mem("existing buf: ", mid_entry->resp_buf, 62); 68 } 69 } 70 spin_unlock(&server->mid_queue_lock); 71 #endif /* CONFIG_CIFS_DEBUG2 */ 72 } 73 74 #ifdef CONFIG_PROC_FS 75 static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon) 76 { 77 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType); 78 79 seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count); 80 if (tcon->nativeFileSystem) 81 seq_printf(m, "Type: %s ", tcon->nativeFileSystem); 82 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d", 83 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics), 84 le32_to_cpu(tcon->fsAttrInfo.Attributes), 85 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength), 86 tcon->status); 87 if (dev_type == FILE_DEVICE_DISK) 88 seq_puts(m, " type: DISK "); 89 else if (dev_type == FILE_DEVICE_CD_ROM) 90 seq_puts(m, " type: CDROM "); 91 else 92 seq_printf(m, " type: %d ", dev_type); 93 94 seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number); 95 96 if ((tcon->seal) || 97 (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) || 98 (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA)) 99 seq_puts(m, " encrypted"); 100 if (tcon->nocase) 101 seq_printf(m, " nocase"); 102 if (tcon->unix_ext) 103 seq_printf(m, " POSIX Extensions"); 104 if (tcon->ses->server->ops->dump_share_caps) 105 tcon->ses->server->ops->dump_share_caps(m, tcon); 106 if (tcon->use_witness) 107 seq_puts(m, " Witness"); 108 if (tcon->broken_sparse_sup) 109 seq_puts(m, " nosparse"); 110 if (tcon->need_reconnect) 111 seq_puts(m, "\tDISCONNECTED "); 112 spin_lock(&tcon->tc_lock); 113 if (tcon->origin_fullpath) { 114 seq_printf(m, "\n\tDFS origin fullpath: %s", 115 tcon->origin_fullpath); 116 } 117 spin_unlock(&tcon->tc_lock); 118 seq_putc(m, '\n'); 119 } 120 121 static void 122 cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan) 123 { 124 struct TCP_Server_Info *server = chan->server; 125 126 if (!server) { 127 seq_printf(m, "\n\n\t\tChannel: %d DISABLED", i+1); 128 return; 129 } 130 131 seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx" 132 "\n\t\tNumber of credits: %d,%d,%d Dialect 0x%x" 133 "\n\t\tTCP status: %d Instance: %d" 134 "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d" 135 "\n\t\tIn Send: %d In MaxReq Wait: %d", 136 i+1, server->conn_id, 137 server->credits, 138 server->echo_credits, 139 server->oplock_credits, 140 server->dialect, 141 server->tcpStatus, 142 server->reconnect_instance, 143 server->srv_count, 144 server->sec_mode, 145 in_flight(server), 146 atomic_read(&server->in_send), 147 atomic_read(&server->num_waiters)); 148 #ifdef CONFIG_NET_NS 149 if (server->net) 150 seq_printf(m, " Net namespace: %u ", server->net->ns.inum); 151 #endif /* NET_NS */ 152 153 } 154 155 static inline const char *smb_speed_to_str(size_t bps) 156 { 157 size_t mbps = bps / 1000 / 1000; 158 159 switch (mbps) { 160 case SPEED_10: 161 return "10Mbps"; 162 case SPEED_100: 163 return "100Mbps"; 164 case SPEED_1000: 165 return "1Gbps"; 166 case SPEED_2500: 167 return "2.5Gbps"; 168 case SPEED_5000: 169 return "5Gbps"; 170 case SPEED_10000: 171 return "10Gbps"; 172 case SPEED_14000: 173 return "14Gbps"; 174 case SPEED_20000: 175 return "20Gbps"; 176 case SPEED_25000: 177 return "25Gbps"; 178 case SPEED_40000: 179 return "40Gbps"; 180 case SPEED_50000: 181 return "50Gbps"; 182 case SPEED_56000: 183 return "56Gbps"; 184 case SPEED_100000: 185 return "100Gbps"; 186 case SPEED_200000: 187 return "200Gbps"; 188 case SPEED_400000: 189 return "400Gbps"; 190 case SPEED_800000: 191 return "800Gbps"; 192 default: 193 return "Unknown"; 194 } 195 } 196 197 static void 198 cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface) 199 { 200 struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr; 201 struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr; 202 203 seq_printf(m, "\tSpeed: %s\n", smb_speed_to_str(iface->speed)); 204 seq_puts(m, "\t\tCapabilities: "); 205 if (iface->rdma_capable) 206 seq_puts(m, "rdma "); 207 if (iface->rss_capable) 208 seq_puts(m, "rss "); 209 if (!iface->rdma_capable && !iface->rss_capable) 210 seq_puts(m, "None"); 211 seq_putc(m, '\n'); 212 if (iface->sockaddr.ss_family == AF_INET) 213 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr); 214 else if (iface->sockaddr.ss_family == AF_INET6) 215 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr); 216 if (!iface->is_active) 217 seq_puts(m, "\t\t[for-cleanup]\n"); 218 } 219 220 static int cifs_debug_files_proc_show(struct seq_file *m, void *v) 221 { 222 struct TCP_Server_Info *server; 223 struct cifs_ses *ses; 224 struct cifs_tcon *tcon; 225 struct cifsFileInfo *cfile; 226 struct inode *inode; 227 struct cifsInodeInfo *cinode; 228 char lease[4]; 229 int n; 230 231 seq_puts(m, "# Version:1\n"); 232 seq_puts(m, "# Format:\n"); 233 seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>"); 234 #ifdef CONFIG_CIFS_DEBUG2 235 seq_puts(m, " <filename> <lease> <lease-key> <mid>\n"); 236 #else 237 seq_puts(m, " <filename> <lease> <lease-key>\n"); 238 #endif /* CIFS_DEBUG2 */ 239 spin_lock(&cifs_tcp_ses_lock); 240 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 241 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 242 if (cifs_ses_exiting(ses)) 243 continue; 244 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 245 spin_lock(&tcon->open_file_lock); 246 list_for_each_entry(cfile, &tcon->openFileList, tlist) { 247 seq_printf(m, 248 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd", 249 tcon->tid, 250 ses->Suid, 251 cfile->fid.persistent_fid, 252 cfile->f_flags, 253 cfile->count, 254 cfile->pid, 255 from_kuid(&init_user_ns, cfile->uid), 256 cfile->dentry); 257 258 /* Append lease/oplock caching state as RHW letters */ 259 inode = d_inode(cfile->dentry); 260 cinode = NULL; 261 n = 0; 262 if (inode) { 263 cinode = CIFS_I(inode); 264 if (CIFS_CACHE_READ(cinode)) 265 lease[n++] = 'R'; 266 if (CIFS_CACHE_HANDLE(cinode)) 267 lease[n++] = 'H'; 268 if (CIFS_CACHE_WRITE(cinode)) 269 lease[n++] = 'W'; 270 } 271 lease[n] = '\0'; 272 seq_puts(m, " "); 273 if (n) 274 seq_printf(m, "%s", lease); 275 else 276 seq_puts(m, "NONE"); 277 278 seq_puts(m, " "); 279 if (cinode && cinode->lease_granted) 280 seq_printf(m, "%pUl", cinode->lease_key); 281 else 282 seq_puts(m, "-"); 283 284 #ifdef CONFIG_CIFS_DEBUG2 285 seq_printf(m, " %llu", cfile->fid.mid); 286 #endif /* CONFIG_CIFS_DEBUG2 */ 287 seq_printf(m, "\n"); 288 } 289 spin_unlock(&tcon->open_file_lock); 290 } 291 } 292 } 293 spin_unlock(&cifs_tcp_ses_lock); 294 seq_putc(m, '\n'); 295 return 0; 296 } 297 298 static int cifs_debug_dirs_proc_show(struct seq_file *m, void *v) 299 { 300 struct list_head *stmp, *tmp, *tmp1; 301 struct TCP_Server_Info *server; 302 struct cifs_ses *ses; 303 struct cifs_tcon *tcon; 304 struct cached_fids *cfids; 305 struct cached_fid *cfid; 306 LIST_HEAD(entry); 307 308 seq_puts(m, "# Version:1\n"); 309 seq_puts(m, "# Format:\n"); 310 seq_puts(m, "# <tree id> <sess id> <persistent fid> <lease-key> <path>\n"); 311 312 spin_lock(&cifs_tcp_ses_lock); 313 list_for_each(stmp, &cifs_tcp_ses_list) { 314 server = list_entry(stmp, struct TCP_Server_Info, 315 tcp_ses_list); 316 list_for_each(tmp, &server->smb_ses_list) { 317 ses = list_entry(tmp, struct cifs_ses, smb_ses_list); 318 list_for_each(tmp1, &ses->tcon_list) { 319 tcon = list_entry(tmp1, struct cifs_tcon, tcon_list); 320 cfids = tcon->cfids; 321 if (!cfids) 322 continue; 323 spin_lock(&cfids->cfid_list_lock); /* check lock ordering */ 324 seq_printf(m, "Num entries: %d, cached_dirents: %lu entries, %llu bytes\n", 325 cfids->num_entries, 326 (unsigned long)atomic_long_read(&cfids->total_dirents_entries), 327 (unsigned long long)atomic64_read(&cfids->total_dirents_bytes)); 328 list_for_each_entry(cfid, &cfids->entries, entry) { 329 seq_printf(m, "0x%x 0x%llx 0x%llx ", 330 tcon->tid, 331 ses->Suid, 332 cfid->fid.persistent_fid); 333 if (cfid->has_lease) 334 seq_printf(m, "%pUl ", cfid->fid.lease_key); 335 else 336 seq_puts(m, "- "); 337 seq_printf(m, "%s", cfid->path); 338 if (cfid->file_all_info_is_valid) 339 seq_printf(m, "\tvalid file info"); 340 if (cfid->dirents.is_valid) 341 seq_printf(m, ", valid dirents"); 342 if (!list_empty(&cfid->dirents.entries)) 343 seq_printf(m, ", dirents: %lu entries, %lu bytes", 344 cfid->dirents.entries_count, cfid->dirents.bytes_used); 345 seq_printf(m, "\n"); 346 } 347 spin_unlock(&cfids->cfid_list_lock); 348 } 349 } 350 } 351 spin_unlock(&cifs_tcp_ses_lock); 352 seq_putc(m, '\n'); 353 return 0; 354 } 355 356 static __always_inline const char *compression_alg_str(__le16 alg) 357 { 358 switch (alg) { 359 case SMB3_COMPRESS_NONE: 360 return "NONE"; 361 case SMB3_COMPRESS_LZNT1: 362 return "LZNT1"; 363 case SMB3_COMPRESS_LZ77: 364 return "LZ77"; 365 case SMB3_COMPRESS_LZ77_HUFF: 366 return "LZ77-Huffman"; 367 case SMB3_COMPRESS_PATTERN: 368 return "Pattern_V1"; 369 default: 370 return "invalid"; 371 } 372 } 373 374 static __always_inline const char *cipher_alg_str(__le16 cipher) 375 { 376 switch (cipher) { 377 case SMB2_ENCRYPTION_AES128_CCM: 378 return "AES128-CCM"; 379 case SMB2_ENCRYPTION_AES128_GCM: 380 return "AES128-GCM"; 381 case SMB2_ENCRYPTION_AES256_CCM: 382 return "AES256-CCM"; 383 case SMB2_ENCRYPTION_AES256_GCM: 384 return "AES256-GCM"; 385 default: 386 return "UNKNOWN"; 387 } 388 } 389 390 static int cifs_debug_data_proc_show(struct seq_file *m, void *v) 391 { 392 struct mid_q_entry *mid_entry; 393 struct TCP_Server_Info *server; 394 struct TCP_Server_Info *chan_server; 395 struct cifs_ses *ses; 396 struct cifs_tcon *tcon; 397 struct cifs_server_iface *iface; 398 size_t iface_weight = 0, iface_min_speed = 0; 399 struct cifs_server_iface *last_iface = NULL; 400 int c, i, j; 401 402 seq_puts(m, 403 "Display Internal CIFS Data Structures for Debugging\n" 404 "---------------------------------------------------\n"); 405 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); 406 seq_printf(m, "Features:"); 407 #ifdef CONFIG_CIFS_DFS_UPCALL 408 seq_printf(m, " DFS"); 409 #endif 410 #ifdef CONFIG_CIFS_FSCACHE 411 seq_printf(m, ",FSCACHE"); 412 #endif 413 #ifdef CONFIG_CIFS_SMB_DIRECT 414 seq_printf(m, ",SMB_DIRECT"); 415 #endif 416 #ifdef CONFIG_CIFS_STATS2 417 seq_printf(m, ",STATS2"); 418 #else 419 seq_printf(m, ",STATS"); 420 #endif 421 #ifdef CONFIG_CIFS_DEBUG2 422 seq_printf(m, ",DEBUG2"); 423 #elif defined(CONFIG_CIFS_DEBUG) 424 seq_printf(m, ",DEBUG"); 425 #endif 426 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 427 seq_printf(m, ",ALLOW_INSECURE_LEGACY"); 428 #endif 429 #ifdef CONFIG_CIFS_POSIX 430 seq_printf(m, ",CIFS_POSIX"); 431 #endif 432 #ifdef CONFIG_CIFS_UPCALL 433 seq_printf(m, ",UPCALL(SPNEGO)"); 434 #endif 435 #ifdef CONFIG_CIFS_XATTR 436 seq_printf(m, ",XATTR"); 437 #endif 438 seq_printf(m, ",ACL"); 439 #ifdef CONFIG_CIFS_SWN_UPCALL 440 seq_puts(m, ",WITNESS"); 441 #endif 442 #ifdef CONFIG_CIFS_COMPRESSION 443 seq_puts(m, ",COMPRESSION"); 444 #endif 445 seq_putc(m, '\n'); 446 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize); 447 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); 448 449 seq_printf(m, "\nServers: "); 450 451 c = 0; 452 spin_lock(&cifs_tcp_ses_lock); 453 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 454 /* channel info will be printed as a part of sessions below */ 455 if (SERVER_IS_CHAN(server)) 456 continue; 457 458 c++; 459 seq_printf(m, "\n%d) ConnectionId: 0x%llx ", 460 c, server->conn_id); 461 462 spin_lock(&server->srv_lock); 463 if (server->hostname) 464 seq_printf(m, "Hostname: %s ", server->hostname); 465 seq_printf(m, "\nClientGUID: %pUL", server->client_guid); 466 spin_unlock(&server->srv_lock); 467 #ifdef CONFIG_CIFS_SMB_DIRECT 468 smbd_debug_proc_show(server, m); 469 #endif 470 seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x", 471 server->credits, 472 server->echo_credits, 473 server->oplock_credits, 474 server->dialect); 475 if (server->sign) 476 seq_printf(m, " signed"); 477 if (server->posix_ext_supported) 478 seq_printf(m, " posix"); 479 if (server->nosharesock) 480 seq_printf(m, " nosharesock"); 481 482 seq_printf(m, "\nServer capabilities: 0x%x", server->capabilities); 483 484 if (server->rdma) 485 seq_printf(m, "\nRDMA "); 486 seq_printf(m, "\nTCP status: %d Instance: %d" 487 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d", 488 server->tcpStatus, 489 server->reconnect_instance, 490 server->srv_count, 491 server->sec_mode, in_flight(server)); 492 #ifdef CONFIG_NET_NS 493 if (server->net) 494 seq_printf(m, " Net namespace: %u ", server->net->ns.inum); 495 #endif /* NET_NS */ 496 497 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d", 498 atomic_read(&server->in_send), 499 atomic_read(&server->num_waiters)); 500 501 if (server->leaf_fullpath) { 502 seq_printf(m, "\nDFS leaf full path: %s", 503 server->leaf_fullpath); 504 } 505 506 seq_puts(m, "\nCompression: "); 507 if (!IS_ENABLED(CONFIG_CIFS_COMPRESSION)) 508 seq_puts(m, "no built-in support"); 509 else if (!server->compression.requested) 510 seq_puts(m, "disabled on mount"); 511 else if (server->compression.enabled) 512 seq_printf(m, "enabled (%s)", compression_alg_str(server->compression.alg)); 513 else 514 seq_puts(m, "disabled (not supported by this server)"); 515 516 /* Show negotiated encryption cipher, even if not required */ 517 seq_puts(m, "\nEncryption: "); 518 if (server->cipher_type) 519 seq_printf(m, "Negotiated cipher (%s)", cipher_alg_str(server->cipher_type)); 520 521 seq_printf(m, "\n\n\tSessions: "); 522 i = 0; 523 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 524 spin_lock(&ses->ses_lock); 525 if (ses->ses_status == SES_EXITING) { 526 spin_unlock(&ses->ses_lock); 527 continue; 528 } 529 i++; 530 if ((ses->serverDomain == NULL) || 531 (ses->serverOS == NULL) || 532 (ses->serverNOS == NULL)) { 533 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ", 534 i, ses->ip_addr, ses->ses_count, 535 ses->capabilities, ses->ses_status); 536 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) 537 seq_printf(m, "Guest "); 538 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) 539 seq_printf(m, "Anonymous "); 540 } else { 541 seq_printf(m, 542 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s " 543 "\n\tNOS: %s\tCapability: 0x%x" 544 "\n\tSMB session status: %d ", 545 i, ses->ip_addr, ses->serverDomain, 546 ses->ses_count, ses->serverOS, ses->serverNOS, 547 ses->capabilities, ses->ses_status); 548 } 549 if (ses->expired_pwd) 550 seq_puts(m, "password no longer valid "); 551 spin_unlock(&ses->ses_lock); 552 553 seq_printf(m, "\n\tSecurity type: %s ", 554 get_security_type_str(server->ops->select_sectype(server, ses->sectype))); 555 556 /* dump session id helpful for use with network trace */ 557 seq_printf(m, " SessionId: 0x%llx", ses->Suid); 558 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) 559 seq_puts(m, " encrypted"); 560 if (ses->sign) 561 seq_puts(m, " signed"); 562 563 seq_printf(m, "\n\tUser: %d Cred User: %d", 564 from_kuid(&init_user_ns, ses->linux_uid), 565 from_kuid(&init_user_ns, ses->cred_uid)); 566 567 if (ses->dfs_root_ses) { 568 seq_printf(m, "\n\tDFS root session id: 0x%llx", 569 ses->dfs_root_ses->Suid); 570 } 571 572 spin_lock(&ses->chan_lock); 573 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0)) 574 seq_puts(m, "\tPrimary channel: DISCONNECTED "); 575 if (CIFS_CHAN_IN_RECONNECT(ses, 0)) 576 seq_puts(m, "\t[RECONNECTING] "); 577 578 if (ses->chan_count > 1) { 579 seq_printf(m, "\n\n\tExtra Channels: %zu ", 580 ses->chan_count-1); 581 for (j = 1; j < ses->chan_count; j++) { 582 cifs_dump_channel(m, j, &ses->chans[j]); 583 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j)) 584 seq_puts(m, "\tDISCONNECTED "); 585 if (CIFS_CHAN_IN_RECONNECT(ses, j)) 586 seq_puts(m, "\t[RECONNECTING] "); 587 } 588 } 589 spin_unlock(&ses->chan_lock); 590 591 seq_puts(m, "\n\n\tShares: "); 592 j = 0; 593 594 seq_printf(m, "\n\t%d) IPC: ", j); 595 if (ses->tcon_ipc) 596 cifs_debug_tcon(m, ses->tcon_ipc); 597 else 598 seq_puts(m, "none\n"); 599 600 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 601 ++j; 602 seq_printf(m, "\n\t%d) ", j); 603 cifs_debug_tcon(m, tcon); 604 } 605 606 spin_lock(&ses->iface_lock); 607 if (ses->iface_count) 608 seq_printf(m, "\n\n\tServer interfaces: %zu" 609 "\tLast updated: %lu seconds ago", 610 ses->iface_count, 611 (jiffies - ses->iface_last_update) / HZ); 612 613 last_iface = list_last_entry(&ses->iface_list, 614 struct cifs_server_iface, 615 iface_head); 616 iface_min_speed = last_iface->speed; 617 618 j = 0; 619 list_for_each_entry(iface, &ses->iface_list, 620 iface_head) { 621 seq_printf(m, "\n\t%d)", ++j); 622 cifs_dump_iface(m, iface); 623 624 iface_weight = iface->speed / iface_min_speed; 625 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)" 626 "\n\t\tAllocated channels: %u\n", 627 iface->weight_fulfilled, 628 iface_weight, 629 iface->num_channels); 630 631 if (is_ses_using_iface(ses, iface)) 632 seq_puts(m, "\t\t[CONNECTED]\n"); 633 } 634 spin_unlock(&ses->iface_lock); 635 636 seq_puts(m, "\n\n\tMIDs: "); 637 spin_lock(&ses->chan_lock); 638 for (j = 0; j < ses->chan_count; j++) { 639 chan_server = ses->chans[j].server; 640 if (!chan_server) 641 continue; 642 643 if (list_empty(&chan_server->pending_mid_q)) 644 continue; 645 646 seq_printf(m, "\n\tServer ConnectionId: 0x%llx", 647 chan_server->conn_id); 648 spin_lock(&chan_server->mid_queue_lock); 649 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) { 650 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu", 651 mid_entry->mid_state, 652 le16_to_cpu(mid_entry->command), 653 mid_entry->pid, 654 mid_entry->callback_data, 655 mid_entry->mid); 656 } 657 spin_unlock(&chan_server->mid_queue_lock); 658 } 659 spin_unlock(&ses->chan_lock); 660 seq_puts(m, "\n--\n"); 661 } 662 if (i == 0) 663 seq_printf(m, "\n\t\t[NONE]"); 664 } 665 if (c == 0) 666 seq_printf(m, "\n\t[NONE]"); 667 668 spin_unlock(&cifs_tcp_ses_lock); 669 seq_putc(m, '\n'); 670 cifs_swn_dump(m); 671 672 /* BB add code to dump additional info such as TCP session info now */ 673 return 0; 674 } 675 676 static ssize_t cifs_stats_proc_write(struct file *file, 677 const char __user *buffer, size_t count, loff_t *ppos) 678 { 679 bool bv; 680 int rc; 681 struct TCP_Server_Info *server; 682 struct cifs_ses *ses; 683 struct cifs_tcon *tcon; 684 685 rc = kstrtobool_from_user(buffer, count, &bv); 686 if (rc == 0) { 687 #ifdef CONFIG_CIFS_STATS2 688 int i; 689 690 atomic_set(&total_buf_alloc_count, 0); 691 atomic_set(&total_small_buf_alloc_count, 0); 692 #endif /* CONFIG_CIFS_STATS2 */ 693 atomic_set(&tcpSesReconnectCount, 0); 694 atomic_set(&tconInfoReconnectCount, 0); 695 696 spin_lock(&GlobalMid_Lock); 697 GlobalMaxActiveXid = 0; 698 GlobalCurrentXid = 0; 699 spin_unlock(&GlobalMid_Lock); 700 spin_lock(&cifs_tcp_ses_lock); 701 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 702 server->max_in_flight = 0; 703 #ifdef CONFIG_CIFS_STATS2 704 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { 705 atomic_set(&server->num_cmds[i], 0); 706 atomic_set(&server->smb2slowcmd[i], 0); 707 server->time_per_cmd[i] = 0; 708 server->slowest_cmd[i] = 0; 709 server->fastest_cmd[0] = 0; 710 } 711 #endif /* CONFIG_CIFS_STATS2 */ 712 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 713 if (cifs_ses_exiting(ses)) 714 continue; 715 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 716 atomic_set(&tcon->num_smbs_sent, 0); 717 spin_lock(&tcon->stat_lock); 718 tcon->bytes_read = 0; 719 tcon->bytes_written = 0; 720 tcon->stats_from_time = ktime_get_real_seconds(); 721 spin_unlock(&tcon->stat_lock); 722 if (server->ops->clear_stats) 723 server->ops->clear_stats(tcon); 724 } 725 } 726 } 727 spin_unlock(&cifs_tcp_ses_lock); 728 } else { 729 return rc; 730 } 731 732 return count; 733 } 734 735 static int cifs_stats_proc_show(struct seq_file *m, void *v) 736 { 737 int i; 738 #ifdef CONFIG_CIFS_STATS2 739 int j; 740 #endif /* STATS2 */ 741 struct TCP_Server_Info *server; 742 struct cifs_ses *ses; 743 struct cifs_tcon *tcon; 744 745 seq_printf(m, "Resources in use\nCIFS Session: %d\n", 746 sesInfoAllocCount.counter); 747 seq_printf(m, "Share (unique mount targets): %d\n", 748 tconInfoAllocCount.counter); 749 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", 750 buf_alloc_count.counter, 751 cifs_min_rcv + tcpSesAllocCount.counter); 752 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", 753 small_buf_alloc_count.counter, cifs_min_small); 754 #ifdef CONFIG_CIFS_STATS2 755 seq_printf(m, "Total Large %d Small %d Allocations\n", 756 atomic_read(&total_buf_alloc_count), 757 atomic_read(&total_small_buf_alloc_count)); 758 #endif /* CONFIG_CIFS_STATS2 */ 759 760 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count)); 761 seq_printf(m, 762 "\n%d session %d share reconnects\n", 763 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); 764 765 seq_printf(m, 766 "Total vfs operations: %d maximum at one time: %d\n", 767 GlobalCurrentXid, GlobalMaxActiveXid); 768 769 i = 0; 770 spin_lock(&cifs_tcp_ses_lock); 771 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 772 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight); 773 #ifdef CONFIG_CIFS_STATS2 774 seq_puts(m, "\nTotal time spent processing by command. Time "); 775 seq_printf(m, "units are jiffies (%d per second)\n", HZ); 776 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n"); 777 seq_puts(m, " --------\t------\t----------\t-------\t-------\n"); 778 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 779 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j, 780 atomic_read(&server->num_cmds[j]), 781 server->time_per_cmd[j], 782 server->fastest_cmd[j], 783 server->slowest_cmd[j]); 784 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 785 if (atomic_read(&server->smb2slowcmd[j])) { 786 spin_lock(&server->srv_lock); 787 seq_printf(m, " %d slow responses from %s for command %d\n", 788 atomic_read(&server->smb2slowcmd[j]), 789 server->hostname, j); 790 spin_unlock(&server->srv_lock); 791 } 792 #endif /* STATS2 */ 793 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 794 if (cifs_ses_exiting(ses)) 795 continue; 796 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 797 i++; 798 seq_printf(m, "\n%d) %s", i, tcon->tree_name); 799 if (tcon->need_reconnect) 800 seq_puts(m, "\tDISCONNECTED "); 801 seq_printf(m, "\nSMBs: %d since %ptTs UTC", 802 atomic_read(&tcon->num_smbs_sent), 803 &tcon->stats_from_time); 804 if (server->ops->print_stats) 805 server->ops->print_stats(m, tcon); 806 } 807 } 808 } 809 spin_unlock(&cifs_tcp_ses_lock); 810 811 seq_putc(m, '\n'); 812 return 0; 813 } 814 815 static int cifs_stats_proc_open(struct inode *inode, struct file *file) 816 { 817 return single_open(file, cifs_stats_proc_show, NULL); 818 } 819 820 static const struct proc_ops cifs_stats_proc_ops = { 821 .proc_open = cifs_stats_proc_open, 822 .proc_read = seq_read, 823 .proc_lseek = seq_lseek, 824 .proc_release = single_release, 825 .proc_write = cifs_stats_proc_write, 826 }; 827 828 #ifdef CONFIG_CIFS_SMB_DIRECT 829 #define PROC_FILE_DEFINE(name) \ 830 static ssize_t name##_write(struct file *file, const char __user *buffer, \ 831 size_t count, loff_t *ppos) \ 832 { \ 833 int rc; \ 834 rc = kstrtoint_from_user(buffer, count, 10, &name); \ 835 if (rc) \ 836 return rc; \ 837 return count; \ 838 } \ 839 static int name##_proc_show(struct seq_file *m, void *v) \ 840 { \ 841 seq_printf(m, "%d\n", name); \ 842 return 0; \ 843 } \ 844 static int name##_open(struct inode *inode, struct file *file) \ 845 { \ 846 return single_open(file, name##_proc_show, NULL); \ 847 } \ 848 \ 849 static const struct proc_ops cifs_##name##_proc_fops = { \ 850 .proc_open = name##_open, \ 851 .proc_read = seq_read, \ 852 .proc_lseek = seq_lseek, \ 853 .proc_release = single_release, \ 854 .proc_write = name##_write, \ 855 } 856 857 PROC_FILE_DEFINE(rdma_readwrite_threshold); 858 PROC_FILE_DEFINE(smbd_max_frmr_depth); 859 PROC_FILE_DEFINE(smbd_keep_alive_interval); 860 PROC_FILE_DEFINE(smbd_max_receive_size); 861 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size); 862 PROC_FILE_DEFINE(smbd_max_send_size); 863 PROC_FILE_DEFINE(smbd_send_credit_target); 864 PROC_FILE_DEFINE(smbd_receive_credit_max); 865 #endif 866 867 static struct proc_dir_entry *proc_fs_cifs; 868 static const struct proc_ops cifsFYI_proc_ops; 869 static const struct proc_ops cifs_lookup_cache_proc_ops; 870 static const struct proc_ops traceSMB_proc_ops; 871 static const struct proc_ops cifs_security_flags_proc_ops; 872 static const struct proc_ops cifs_linux_ext_proc_ops; 873 static const struct proc_ops cifs_mount_params_proc_ops; 874 875 void 876 cifs_proc_init(void) 877 { 878 proc_fs_cifs = proc_mkdir("fs/cifs", NULL); 879 if (proc_fs_cifs == NULL) 880 return; 881 882 proc_create_single("DebugData", 0, proc_fs_cifs, 883 cifs_debug_data_proc_show); 884 885 proc_create_single("open_files", 0400, proc_fs_cifs, 886 cifs_debug_files_proc_show); 887 888 proc_create_single("open_dirs", 0400, proc_fs_cifs, 889 cifs_debug_dirs_proc_show); 890 891 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops); 892 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops); 893 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops); 894 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs, 895 &cifs_linux_ext_proc_ops); 896 proc_create("SecurityFlags", 0644, proc_fs_cifs, 897 &cifs_security_flags_proc_ops); 898 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs, 899 &cifs_lookup_cache_proc_ops); 900 901 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops); 902 903 #ifdef CONFIG_CIFS_DFS_UPCALL 904 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops); 905 #endif 906 907 #ifdef CONFIG_CIFS_SMB_DIRECT 908 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs, 909 &cifs_rdma_readwrite_threshold_proc_fops); 910 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs, 911 &cifs_smbd_max_frmr_depth_proc_fops); 912 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs, 913 &cifs_smbd_keep_alive_interval_proc_fops); 914 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs, 915 &cifs_smbd_max_receive_size_proc_fops); 916 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs, 917 &cifs_smbd_max_fragmented_recv_size_proc_fops); 918 proc_create("smbd_max_send_size", 0644, proc_fs_cifs, 919 &cifs_smbd_max_send_size_proc_fops); 920 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs, 921 &cifs_smbd_send_credit_target_proc_fops); 922 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs, 923 &cifs_smbd_receive_credit_max_proc_fops); 924 #endif 925 } 926 927 void 928 cifs_proc_clean(void) 929 { 930 if (proc_fs_cifs == NULL) 931 return; 932 933 remove_proc_entry("DebugData", proc_fs_cifs); 934 remove_proc_entry("open_files", proc_fs_cifs); 935 remove_proc_entry("open_dirs", proc_fs_cifs); 936 remove_proc_entry("cifsFYI", proc_fs_cifs); 937 remove_proc_entry("traceSMB", proc_fs_cifs); 938 remove_proc_entry("Stats", proc_fs_cifs); 939 remove_proc_entry("SecurityFlags", proc_fs_cifs); 940 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); 941 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); 942 remove_proc_entry("mount_params", proc_fs_cifs); 943 944 #ifdef CONFIG_CIFS_DFS_UPCALL 945 remove_proc_entry("dfscache", proc_fs_cifs); 946 #endif 947 #ifdef CONFIG_CIFS_SMB_DIRECT 948 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs); 949 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs); 950 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs); 951 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs); 952 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs); 953 remove_proc_entry("smbd_max_send_size", proc_fs_cifs); 954 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs); 955 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs); 956 #endif 957 remove_proc_entry("fs/cifs", NULL); 958 } 959 960 static int cifsFYI_proc_show(struct seq_file *m, void *v) 961 { 962 seq_printf(m, "%d\n", cifsFYI); 963 return 0; 964 } 965 966 static int cifsFYI_proc_open(struct inode *inode, struct file *file) 967 { 968 return single_open(file, cifsFYI_proc_show, NULL); 969 } 970 971 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, 972 size_t count, loff_t *ppos) 973 { 974 char c[2] = { '\0' }; 975 bool bv; 976 int rc; 977 978 rc = get_user(c[0], buffer); 979 if (rc) 980 return rc; 981 if (kstrtobool(c, &bv) == 0) 982 cifsFYI = bv; 983 else if ((c[0] > '1') && (c[0] <= '9')) 984 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ 985 else 986 return -EINVAL; 987 988 return count; 989 } 990 991 static const struct proc_ops cifsFYI_proc_ops = { 992 .proc_open = cifsFYI_proc_open, 993 .proc_read = seq_read, 994 .proc_lseek = seq_lseek, 995 .proc_release = single_release, 996 .proc_write = cifsFYI_proc_write, 997 }; 998 999 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) 1000 { 1001 seq_printf(m, "%d\n", linuxExtEnabled); 1002 return 0; 1003 } 1004 1005 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) 1006 { 1007 return single_open(file, cifs_linux_ext_proc_show, NULL); 1008 } 1009 1010 static ssize_t cifs_linux_ext_proc_write(struct file *file, 1011 const char __user *buffer, size_t count, loff_t *ppos) 1012 { 1013 int rc; 1014 1015 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); 1016 if (rc) 1017 return rc; 1018 1019 return count; 1020 } 1021 1022 static const struct proc_ops cifs_linux_ext_proc_ops = { 1023 .proc_open = cifs_linux_ext_proc_open, 1024 .proc_read = seq_read, 1025 .proc_lseek = seq_lseek, 1026 .proc_release = single_release, 1027 .proc_write = cifs_linux_ext_proc_write, 1028 }; 1029 1030 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) 1031 { 1032 seq_printf(m, "%d\n", lookupCacheEnabled); 1033 return 0; 1034 } 1035 1036 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) 1037 { 1038 return single_open(file, cifs_lookup_cache_proc_show, NULL); 1039 } 1040 1041 static ssize_t cifs_lookup_cache_proc_write(struct file *file, 1042 const char __user *buffer, size_t count, loff_t *ppos) 1043 { 1044 int rc; 1045 1046 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled); 1047 if (rc) 1048 return rc; 1049 1050 return count; 1051 } 1052 1053 static const struct proc_ops cifs_lookup_cache_proc_ops = { 1054 .proc_open = cifs_lookup_cache_proc_open, 1055 .proc_read = seq_read, 1056 .proc_lseek = seq_lseek, 1057 .proc_release = single_release, 1058 .proc_write = cifs_lookup_cache_proc_write, 1059 }; 1060 1061 static int traceSMB_proc_show(struct seq_file *m, void *v) 1062 { 1063 seq_printf(m, "%d\n", traceSMB); 1064 return 0; 1065 } 1066 1067 static int traceSMB_proc_open(struct inode *inode, struct file *file) 1068 { 1069 return single_open(file, traceSMB_proc_show, NULL); 1070 } 1071 1072 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, 1073 size_t count, loff_t *ppos) 1074 { 1075 int rc; 1076 1077 rc = kstrtobool_from_user(buffer, count, &traceSMB); 1078 if (rc) 1079 return rc; 1080 1081 return count; 1082 } 1083 1084 static const struct proc_ops traceSMB_proc_ops = { 1085 .proc_open = traceSMB_proc_open, 1086 .proc_read = seq_read, 1087 .proc_lseek = seq_lseek, 1088 .proc_release = single_release, 1089 .proc_write = traceSMB_proc_write, 1090 }; 1091 1092 static int cifs_security_flags_proc_show(struct seq_file *m, void *v) 1093 { 1094 seq_printf(m, "0x%x\n", global_secflags); 1095 return 0; 1096 } 1097 1098 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) 1099 { 1100 return single_open(file, cifs_security_flags_proc_show, NULL); 1101 } 1102 1103 /* 1104 * Ensure that if someone sets a MUST flag, that we disable all other MAY 1105 * flags except for the ones corresponding to the given MUST flag. If there are 1106 * multiple MUST flags, then try to prefer more secure ones. 1107 */ 1108 static void 1109 cifs_security_flags_handle_must_flags(unsigned int *flags) 1110 { 1111 unsigned int signflags = *flags & (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL); 1112 1113 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) 1114 *flags = CIFSSEC_MUST_KRB5; 1115 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) 1116 *flags = CIFSSEC_MUST_NTLMSSP; 1117 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) 1118 *flags = CIFSSEC_MUST_NTLMV2; 1119 1120 *flags |= signflags; 1121 } 1122 1123 static ssize_t cifs_security_flags_proc_write(struct file *file, 1124 const char __user *buffer, size_t count, loff_t *ppos) 1125 { 1126 int rc; 1127 unsigned int flags; 1128 char flags_string[12]; 1129 bool bv; 1130 1131 if ((count < 1) || (count > 11)) 1132 return -EINVAL; 1133 1134 memset(flags_string, 0, sizeof(flags_string)); 1135 1136 if (copy_from_user(flags_string, buffer, count)) 1137 return -EFAULT; 1138 1139 if (count < 3) { 1140 /* single char or single char followed by null */ 1141 if (kstrtobool(flags_string, &bv) == 0) { 1142 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; 1143 return count; 1144 } else if (!isdigit(flags_string[0])) { 1145 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1146 flags_string); 1147 return -EINVAL; 1148 } 1149 } 1150 1151 /* else we have a number */ 1152 rc = kstrtouint(flags_string, 0, &flags); 1153 if (rc) { 1154 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1155 flags_string); 1156 return rc; 1157 } 1158 1159 cifs_dbg(FYI, "sec flags 0x%x\n", flags); 1160 1161 if (flags == 0) { 1162 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); 1163 return -EINVAL; 1164 } 1165 1166 if (flags & ~CIFSSEC_MASK) { 1167 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", 1168 flags & ~CIFSSEC_MASK); 1169 return -EINVAL; 1170 } 1171 1172 cifs_security_flags_handle_must_flags(&flags); 1173 1174 /* flags look ok - update the global security flags for cifs module */ 1175 global_secflags = flags; 1176 if (global_secflags & CIFSSEC_MUST_SIGN) { 1177 /* requiring signing implies signing is allowed */ 1178 global_secflags |= CIFSSEC_MAY_SIGN; 1179 cifs_dbg(FYI, "packet signing now required\n"); 1180 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { 1181 cifs_dbg(FYI, "packet signing disabled\n"); 1182 } 1183 /* BB should we turn on MAY flags for other MUST options? */ 1184 return count; 1185 } 1186 1187 static const struct proc_ops cifs_security_flags_proc_ops = { 1188 .proc_open = cifs_security_flags_proc_open, 1189 .proc_read = seq_read, 1190 .proc_lseek = seq_lseek, 1191 .proc_release = single_release, 1192 .proc_write = cifs_security_flags_proc_write, 1193 }; 1194 1195 /* To make it easier to debug, can help to show mount params */ 1196 static int cifs_mount_params_proc_show(struct seq_file *m, void *v) 1197 { 1198 const struct fs_parameter_spec *p; 1199 const char *type; 1200 1201 for (p = smb3_fs_parameters; p->name; p++) { 1202 /* cannot use switch with pointers... */ 1203 if (!p->type) { 1204 if (p->flags == fs_param_neg_with_no) 1205 type = "noflag"; 1206 else 1207 type = "flag"; 1208 } else if (p->type == fs_param_is_bool) 1209 type = "bool"; 1210 else if (p->type == fs_param_is_u32) 1211 type = "u32"; 1212 else if (p->type == fs_param_is_u64) 1213 type = "u64"; 1214 else if (p->type == fs_param_is_string) 1215 type = "string"; 1216 else 1217 type = "unknown"; 1218 1219 seq_printf(m, "%s:%s\n", p->name, type); 1220 } 1221 1222 return 0; 1223 } 1224 1225 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file) 1226 { 1227 return single_open(file, cifs_mount_params_proc_show, NULL); 1228 } 1229 1230 static const struct proc_ops cifs_mount_params_proc_ops = { 1231 .proc_open = cifs_mount_params_proc_open, 1232 .proc_read = seq_read, 1233 .proc_lseek = seq_lseek, 1234 .proc_release = single_release, 1235 /* No need for write for now */ 1236 /* .proc_write = cifs_mount_params_proc_write, */ 1237 }; 1238 1239 #else 1240 void cifs_proc_init(void) 1241 { 1242 } 1243 1244 void cifs_proc_clean(void) 1245 { 1246 } 1247 #endif /* PROC_FS */ 1248