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 "cifspdu.h" 17 #include "cifsglob.h" 18 #include "cifsproto.h" 19 #include "cifs_debug.h" 20 #include "cifsfs.h" 21 #include "fs_context.h" 22 #ifdef CONFIG_CIFS_DFS_UPCALL 23 #include "dfs_cache.h" 24 #endif 25 #ifdef CONFIG_CIFS_SMB_DIRECT 26 #include "smbdirect.h" 27 #endif 28 #include "cifs_swn.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_detail(void *buf, struct TCP_Server_Info *server) 39 { 40 #ifdef CONFIG_CIFS_DEBUG2 41 struct smb_hdr *smb = buf; 42 43 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d Wct: %d\n", 44 smb->Command, smb->Status.CifsError, smb->Flags, 45 smb->Flags2, smb->Mid, smb->Pid, smb->WordCount); 46 if (!server->ops->check_message(buf, server->total_read, server)) { 47 cifs_dbg(VFS, "smb buf %p len %u\n", smb, 48 server->ops->calc_smb_size(smb)); 49 } 50 #endif /* CONFIG_CIFS_DEBUG2 */ 51 } 52 53 void cifs_dump_mids(struct TCP_Server_Info *server) 54 { 55 #ifdef CONFIG_CIFS_DEBUG2 56 struct mid_q_entry *mid_entry; 57 58 if (server == NULL) 59 return; 60 61 cifs_dbg(VFS, "Dump pending requests:\n"); 62 spin_lock(&server->mid_lock); 63 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) { 64 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n", 65 mid_entry->mid_state, 66 le16_to_cpu(mid_entry->command), 67 mid_entry->pid, 68 mid_entry->callback_data, 69 mid_entry->mid); 70 #ifdef CONFIG_CIFS_STATS2 71 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n", 72 mid_entry->large_buf, 73 mid_entry->resp_buf, 74 mid_entry->when_received, 75 jiffies); 76 #endif /* STATS2 */ 77 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n", 78 mid_entry->multiRsp, mid_entry->multiEnd); 79 if (mid_entry->resp_buf) { 80 cifs_dump_detail(mid_entry->resp_buf, server); 81 cifs_dump_mem("existing buf: ", 82 mid_entry->resp_buf, 62); 83 } 84 } 85 spin_unlock(&server->mid_lock); 86 #endif /* CONFIG_CIFS_DEBUG2 */ 87 } 88 89 #ifdef CONFIG_PROC_FS 90 static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon) 91 { 92 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType); 93 94 seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count); 95 if (tcon->nativeFileSystem) 96 seq_printf(m, "Type: %s ", tcon->nativeFileSystem); 97 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d", 98 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics), 99 le32_to_cpu(tcon->fsAttrInfo.Attributes), 100 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength), 101 tcon->status); 102 if (dev_type == FILE_DEVICE_DISK) 103 seq_puts(m, " type: DISK "); 104 else if (dev_type == FILE_DEVICE_CD_ROM) 105 seq_puts(m, " type: CDROM "); 106 else 107 seq_printf(m, " type: %d ", dev_type); 108 109 seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number); 110 111 if ((tcon->seal) || 112 (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) || 113 (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA)) 114 seq_puts(m, " encrypted"); 115 if (tcon->nocase) 116 seq_printf(m, " nocase"); 117 if (tcon->unix_ext) 118 seq_printf(m, " POSIX Extensions"); 119 if (tcon->ses->server->ops->dump_share_caps) 120 tcon->ses->server->ops->dump_share_caps(m, tcon); 121 if (tcon->use_witness) 122 seq_puts(m, " Witness"); 123 if (tcon->broken_sparse_sup) 124 seq_puts(m, " nosparse"); 125 if (tcon->need_reconnect) 126 seq_puts(m, "\tDISCONNECTED "); 127 spin_lock(&tcon->tc_lock); 128 if (tcon->origin_fullpath) { 129 seq_printf(m, "\n\tDFS origin fullpath: %s", 130 tcon->origin_fullpath); 131 } 132 spin_unlock(&tcon->tc_lock); 133 seq_putc(m, '\n'); 134 } 135 136 static void 137 cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan) 138 { 139 struct TCP_Server_Info *server = chan->server; 140 141 if (!server) { 142 seq_printf(m, "\n\n\t\tChannel: %d DISABLED", i+1); 143 return; 144 } 145 146 seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx" 147 "\n\t\tNumber of credits: %d,%d,%d Dialect 0x%x" 148 "\n\t\tTCP status: %d Instance: %d" 149 "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d" 150 "\n\t\tIn Send: %d In MaxReq Wait: %d", 151 i+1, server->conn_id, 152 server->credits, 153 server->echo_credits, 154 server->oplock_credits, 155 server->dialect, 156 server->tcpStatus, 157 server->reconnect_instance, 158 server->srv_count, 159 server->sec_mode, 160 in_flight(server), 161 atomic_read(&server->in_send), 162 atomic_read(&server->num_waiters)); 163 #ifdef CONFIG_NET_NS 164 if (server->net) 165 seq_printf(m, " Net namespace: %u ", server->net->ns.inum); 166 #endif /* NET_NS */ 167 168 } 169 170 static inline const char *smb_speed_to_str(size_t bps) 171 { 172 size_t mbps = bps / 1000 / 1000; 173 174 switch (mbps) { 175 case SPEED_10: 176 return "10Mbps"; 177 case SPEED_100: 178 return "100Mbps"; 179 case SPEED_1000: 180 return "1Gbps"; 181 case SPEED_2500: 182 return "2.5Gbps"; 183 case SPEED_5000: 184 return "5Gbps"; 185 case SPEED_10000: 186 return "10Gbps"; 187 case SPEED_14000: 188 return "14Gbps"; 189 case SPEED_20000: 190 return "20Gbps"; 191 case SPEED_25000: 192 return "25Gbps"; 193 case SPEED_40000: 194 return "40Gbps"; 195 case SPEED_50000: 196 return "50Gbps"; 197 case SPEED_56000: 198 return "56Gbps"; 199 case SPEED_100000: 200 return "100Gbps"; 201 case SPEED_200000: 202 return "200Gbps"; 203 case SPEED_400000: 204 return "400Gbps"; 205 case SPEED_800000: 206 return "800Gbps"; 207 default: 208 return "Unknown"; 209 } 210 } 211 212 static void 213 cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface) 214 { 215 struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr; 216 struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr; 217 218 seq_printf(m, "\tSpeed: %s\n", smb_speed_to_str(iface->speed)); 219 seq_puts(m, "\t\tCapabilities: "); 220 if (iface->rdma_capable) 221 seq_puts(m, "rdma "); 222 if (iface->rss_capable) 223 seq_puts(m, "rss "); 224 if (!iface->rdma_capable && !iface->rss_capable) 225 seq_puts(m, "None"); 226 seq_putc(m, '\n'); 227 if (iface->sockaddr.ss_family == AF_INET) 228 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr); 229 else if (iface->sockaddr.ss_family == AF_INET6) 230 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr); 231 if (!iface->is_active) 232 seq_puts(m, "\t\t[for-cleanup]\n"); 233 } 234 235 static int cifs_debug_files_proc_show(struct seq_file *m, void *v) 236 { 237 struct TCP_Server_Info *server; 238 struct cifs_ses *ses; 239 struct cifs_tcon *tcon; 240 struct cifsFileInfo *cfile; 241 242 seq_puts(m, "# Version:1\n"); 243 seq_puts(m, "# Format:\n"); 244 seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>"); 245 #ifdef CONFIG_CIFS_DEBUG2 246 seq_printf(m, " <filename> <mid>\n"); 247 #else 248 seq_printf(m, " <filename>\n"); 249 #endif /* CIFS_DEBUG2 */ 250 spin_lock(&cifs_tcp_ses_lock); 251 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 252 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 253 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 254 spin_lock(&tcon->open_file_lock); 255 list_for_each_entry(cfile, &tcon->openFileList, tlist) { 256 seq_printf(m, 257 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd", 258 tcon->tid, 259 ses->Suid, 260 cfile->fid.persistent_fid, 261 cfile->f_flags, 262 cfile->count, 263 cfile->pid, 264 from_kuid(&init_user_ns, cfile->uid), 265 cfile->dentry); 266 #ifdef CONFIG_CIFS_DEBUG2 267 seq_printf(m, " %llu\n", cfile->fid.mid); 268 #else 269 seq_printf(m, "\n"); 270 #endif /* CIFS_DEBUG2 */ 271 } 272 spin_unlock(&tcon->open_file_lock); 273 } 274 } 275 } 276 spin_unlock(&cifs_tcp_ses_lock); 277 seq_putc(m, '\n'); 278 return 0; 279 } 280 281 static __always_inline const char *compression_alg_str(__le16 alg) 282 { 283 switch (alg) { 284 case SMB3_COMPRESS_NONE: 285 return "NONE"; 286 case SMB3_COMPRESS_LZNT1: 287 return "LZNT1"; 288 case SMB3_COMPRESS_LZ77: 289 return "LZ77"; 290 case SMB3_COMPRESS_LZ77_HUFF: 291 return "LZ77-Huffman"; 292 case SMB3_COMPRESS_PATTERN: 293 return "Pattern_V1"; 294 default: 295 return "invalid"; 296 } 297 } 298 299 static int cifs_debug_data_proc_show(struct seq_file *m, void *v) 300 { 301 struct mid_q_entry *mid_entry; 302 struct TCP_Server_Info *server; 303 struct TCP_Server_Info *chan_server; 304 struct cifs_ses *ses; 305 struct cifs_tcon *tcon; 306 struct cifs_server_iface *iface; 307 size_t iface_weight = 0, iface_min_speed = 0; 308 struct cifs_server_iface *last_iface = NULL; 309 int c, i, j; 310 311 seq_puts(m, 312 "Display Internal CIFS Data Structures for Debugging\n" 313 "---------------------------------------------------\n"); 314 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); 315 seq_printf(m, "Features:"); 316 #ifdef CONFIG_CIFS_DFS_UPCALL 317 seq_printf(m, " DFS"); 318 #endif 319 #ifdef CONFIG_CIFS_FSCACHE 320 seq_printf(m, ",FSCACHE"); 321 #endif 322 #ifdef CONFIG_CIFS_SMB_DIRECT 323 seq_printf(m, ",SMB_DIRECT"); 324 #endif 325 #ifdef CONFIG_CIFS_STATS2 326 seq_printf(m, ",STATS2"); 327 #else 328 seq_printf(m, ",STATS"); 329 #endif 330 #ifdef CONFIG_CIFS_DEBUG2 331 seq_printf(m, ",DEBUG2"); 332 #elif defined(CONFIG_CIFS_DEBUG) 333 seq_printf(m, ",DEBUG"); 334 #endif 335 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 336 seq_printf(m, ",ALLOW_INSECURE_LEGACY"); 337 #endif 338 #ifdef CONFIG_CIFS_POSIX 339 seq_printf(m, ",CIFS_POSIX"); 340 #endif 341 #ifdef CONFIG_CIFS_UPCALL 342 seq_printf(m, ",UPCALL(SPNEGO)"); 343 #endif 344 #ifdef CONFIG_CIFS_XATTR 345 seq_printf(m, ",XATTR"); 346 #endif 347 seq_printf(m, ",ACL"); 348 #ifdef CONFIG_CIFS_SWN_UPCALL 349 seq_puts(m, ",WITNESS"); 350 #endif 351 seq_putc(m, '\n'); 352 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize); 353 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); 354 355 seq_printf(m, "\nServers: "); 356 357 c = 0; 358 spin_lock(&cifs_tcp_ses_lock); 359 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 360 /* channel info will be printed as a part of sessions below */ 361 if (SERVER_IS_CHAN(server)) 362 continue; 363 364 c++; 365 seq_printf(m, "\n%d) ConnectionId: 0x%llx ", 366 c, server->conn_id); 367 368 spin_lock(&server->srv_lock); 369 if (server->hostname) 370 seq_printf(m, "Hostname: %s ", server->hostname); 371 seq_printf(m, "\nClientGUID: %pUL", server->client_guid); 372 spin_unlock(&server->srv_lock); 373 #ifdef CONFIG_CIFS_SMB_DIRECT 374 if (!server->rdma) 375 goto skip_rdma; 376 377 if (!server->smbd_conn) { 378 seq_printf(m, "\nSMBDirect transport not available"); 379 goto skip_rdma; 380 } 381 382 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x " 383 "transport status: %x", 384 server->smbd_conn->protocol, 385 server->smbd_conn->transport_status); 386 seq_printf(m, "\nConn receive_credit_max: %x " 387 "send_credit_target: %x max_send_size: %x", 388 server->smbd_conn->receive_credit_max, 389 server->smbd_conn->send_credit_target, 390 server->smbd_conn->max_send_size); 391 seq_printf(m, "\nConn max_fragmented_recv_size: %x " 392 "max_fragmented_send_size: %x max_receive_size:%x", 393 server->smbd_conn->max_fragmented_recv_size, 394 server->smbd_conn->max_fragmented_send_size, 395 server->smbd_conn->max_receive_size); 396 seq_printf(m, "\nConn keep_alive_interval: %x " 397 "max_readwrite_size: %x rdma_readwrite_threshold: %x", 398 server->smbd_conn->keep_alive_interval, 399 server->smbd_conn->max_readwrite_size, 400 server->smbd_conn->rdma_readwrite_threshold); 401 seq_printf(m, "\nDebug count_get_receive_buffer: %x " 402 "count_put_receive_buffer: %x count_send_empty: %x", 403 server->smbd_conn->count_get_receive_buffer, 404 server->smbd_conn->count_put_receive_buffer, 405 server->smbd_conn->count_send_empty); 406 seq_printf(m, "\nRead Queue count_reassembly_queue: %x " 407 "count_enqueue_reassembly_queue: %x " 408 "count_dequeue_reassembly_queue: %x " 409 "fragment_reassembly_remaining: %x " 410 "reassembly_data_length: %x " 411 "reassembly_queue_length: %x", 412 server->smbd_conn->count_reassembly_queue, 413 server->smbd_conn->count_enqueue_reassembly_queue, 414 server->smbd_conn->count_dequeue_reassembly_queue, 415 server->smbd_conn->fragment_reassembly_remaining, 416 server->smbd_conn->reassembly_data_length, 417 server->smbd_conn->reassembly_queue_length); 418 seq_printf(m, "\nCurrent Credits send_credits: %x " 419 "receive_credits: %x receive_credit_target: %x", 420 atomic_read(&server->smbd_conn->send_credits), 421 atomic_read(&server->smbd_conn->receive_credits), 422 server->smbd_conn->receive_credit_target); 423 seq_printf(m, "\nPending send_pending: %x ", 424 atomic_read(&server->smbd_conn->send_pending)); 425 seq_printf(m, "\nReceive buffers count_receive_queue: %x " 426 "count_empty_packet_queue: %x", 427 server->smbd_conn->count_receive_queue, 428 server->smbd_conn->count_empty_packet_queue); 429 seq_printf(m, "\nMR responder_resources: %x " 430 "max_frmr_depth: %x mr_type: %x", 431 server->smbd_conn->responder_resources, 432 server->smbd_conn->max_frmr_depth, 433 server->smbd_conn->mr_type); 434 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x", 435 atomic_read(&server->smbd_conn->mr_ready_count), 436 atomic_read(&server->smbd_conn->mr_used_count)); 437 skip_rdma: 438 #endif 439 seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x", 440 server->credits, 441 server->echo_credits, 442 server->oplock_credits, 443 server->dialect); 444 if (server->sign) 445 seq_printf(m, " signed"); 446 if (server->posix_ext_supported) 447 seq_printf(m, " posix"); 448 if (server->nosharesock) 449 seq_printf(m, " nosharesock"); 450 451 seq_printf(m, "\nServer capabilities: 0x%x", server->capabilities); 452 453 if (server->rdma) 454 seq_printf(m, "\nRDMA "); 455 seq_printf(m, "\nTCP status: %d Instance: %d" 456 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d", 457 server->tcpStatus, 458 server->reconnect_instance, 459 server->srv_count, 460 server->sec_mode, in_flight(server)); 461 #ifdef CONFIG_NET_NS 462 if (server->net) 463 seq_printf(m, " Net namespace: %u ", server->net->ns.inum); 464 #endif /* NET_NS */ 465 466 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d", 467 atomic_read(&server->in_send), 468 atomic_read(&server->num_waiters)); 469 470 if (server->leaf_fullpath) { 471 seq_printf(m, "\nDFS leaf full path: %s", 472 server->leaf_fullpath); 473 } 474 475 seq_puts(m, "\nCompression: "); 476 if (!server->compression.requested) 477 seq_puts(m, "disabled on mount"); 478 else if (server->compression.enabled) 479 seq_printf(m, "enabled (%s)", compression_alg_str(server->compression.alg)); 480 else 481 seq_puts(m, "disabled (not supported by this server)"); 482 483 seq_printf(m, "\n\n\tSessions: "); 484 i = 0; 485 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 486 spin_lock(&ses->ses_lock); 487 if (ses->ses_status == SES_EXITING) { 488 spin_unlock(&ses->ses_lock); 489 continue; 490 } 491 i++; 492 if ((ses->serverDomain == NULL) || 493 (ses->serverOS == NULL) || 494 (ses->serverNOS == NULL)) { 495 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ", 496 i, ses->ip_addr, ses->ses_count, 497 ses->capabilities, ses->ses_status); 498 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) 499 seq_printf(m, "Guest "); 500 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) 501 seq_printf(m, "Anonymous "); 502 } else { 503 seq_printf(m, 504 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s " 505 "\n\tNOS: %s\tCapability: 0x%x" 506 "\n\tSMB session status: %d ", 507 i, ses->ip_addr, ses->serverDomain, 508 ses->ses_count, ses->serverOS, ses->serverNOS, 509 ses->capabilities, ses->ses_status); 510 } 511 if (ses->expired_pwd) 512 seq_puts(m, "password no longer valid "); 513 spin_unlock(&ses->ses_lock); 514 515 seq_printf(m, "\n\tSecurity type: %s ", 516 get_security_type_str(server->ops->select_sectype(server, ses->sectype))); 517 518 /* dump session id helpful for use with network trace */ 519 seq_printf(m, " SessionId: 0x%llx", ses->Suid); 520 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) { 521 seq_puts(m, " encrypted"); 522 /* can help in debugging to show encryption type */ 523 if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM) 524 seq_puts(m, "(gcm256)"); 525 } 526 if (ses->sign) 527 seq_puts(m, " signed"); 528 529 seq_printf(m, "\n\tUser: %d Cred User: %d", 530 from_kuid(&init_user_ns, ses->linux_uid), 531 from_kuid(&init_user_ns, ses->cred_uid)); 532 533 if (ses->dfs_root_ses) { 534 seq_printf(m, "\n\tDFS root session id: 0x%llx", 535 ses->dfs_root_ses->Suid); 536 } 537 538 spin_lock(&ses->chan_lock); 539 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0)) 540 seq_puts(m, "\tPrimary channel: DISCONNECTED "); 541 if (CIFS_CHAN_IN_RECONNECT(ses, 0)) 542 seq_puts(m, "\t[RECONNECTING] "); 543 544 if (ses->chan_count > 1) { 545 seq_printf(m, "\n\n\tExtra Channels: %zu ", 546 ses->chan_count-1); 547 for (j = 1; j < ses->chan_count; j++) { 548 cifs_dump_channel(m, j, &ses->chans[j]); 549 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j)) 550 seq_puts(m, "\tDISCONNECTED "); 551 if (CIFS_CHAN_IN_RECONNECT(ses, j)) 552 seq_puts(m, "\t[RECONNECTING] "); 553 } 554 } 555 spin_unlock(&ses->chan_lock); 556 557 seq_puts(m, "\n\n\tShares: "); 558 j = 0; 559 560 seq_printf(m, "\n\t%d) IPC: ", j); 561 if (ses->tcon_ipc) 562 cifs_debug_tcon(m, ses->tcon_ipc); 563 else 564 seq_puts(m, "none\n"); 565 566 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 567 ++j; 568 seq_printf(m, "\n\t%d) ", j); 569 cifs_debug_tcon(m, tcon); 570 } 571 572 spin_lock(&ses->iface_lock); 573 if (ses->iface_count) 574 seq_printf(m, "\n\n\tServer interfaces: %zu" 575 "\tLast updated: %lu seconds ago", 576 ses->iface_count, 577 (jiffies - ses->iface_last_update) / HZ); 578 579 last_iface = list_last_entry(&ses->iface_list, 580 struct cifs_server_iface, 581 iface_head); 582 iface_min_speed = last_iface->speed; 583 584 j = 0; 585 list_for_each_entry(iface, &ses->iface_list, 586 iface_head) { 587 seq_printf(m, "\n\t%d)", ++j); 588 cifs_dump_iface(m, iface); 589 590 iface_weight = iface->speed / iface_min_speed; 591 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)" 592 "\n\t\tAllocated channels: %u\n", 593 iface->weight_fulfilled, 594 iface_weight, 595 iface->num_channels); 596 597 if (is_ses_using_iface(ses, iface)) 598 seq_puts(m, "\t\t[CONNECTED]\n"); 599 } 600 spin_unlock(&ses->iface_lock); 601 602 seq_puts(m, "\n\n\tMIDs: "); 603 spin_lock(&ses->chan_lock); 604 for (j = 0; j < ses->chan_count; j++) { 605 chan_server = ses->chans[j].server; 606 if (!chan_server) 607 continue; 608 609 if (list_empty(&chan_server->pending_mid_q)) 610 continue; 611 612 seq_printf(m, "\n\tServer ConnectionId: 0x%llx", 613 chan_server->conn_id); 614 spin_lock(&chan_server->mid_lock); 615 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) { 616 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu", 617 mid_entry->mid_state, 618 le16_to_cpu(mid_entry->command), 619 mid_entry->pid, 620 mid_entry->callback_data, 621 mid_entry->mid); 622 } 623 spin_unlock(&chan_server->mid_lock); 624 } 625 spin_unlock(&ses->chan_lock); 626 seq_puts(m, "\n--\n"); 627 } 628 if (i == 0) 629 seq_printf(m, "\n\t\t[NONE]"); 630 } 631 if (c == 0) 632 seq_printf(m, "\n\t[NONE]"); 633 634 spin_unlock(&cifs_tcp_ses_lock); 635 seq_putc(m, '\n'); 636 cifs_swn_dump(m); 637 638 /* BB add code to dump additional info such as TCP session info now */ 639 return 0; 640 } 641 642 static ssize_t cifs_stats_proc_write(struct file *file, 643 const char __user *buffer, size_t count, loff_t *ppos) 644 { 645 bool bv; 646 int rc; 647 struct TCP_Server_Info *server; 648 struct cifs_ses *ses; 649 struct cifs_tcon *tcon; 650 651 rc = kstrtobool_from_user(buffer, count, &bv); 652 if (rc == 0) { 653 #ifdef CONFIG_CIFS_STATS2 654 int i; 655 656 atomic_set(&total_buf_alloc_count, 0); 657 atomic_set(&total_small_buf_alloc_count, 0); 658 #endif /* CONFIG_CIFS_STATS2 */ 659 atomic_set(&tcpSesReconnectCount, 0); 660 atomic_set(&tconInfoReconnectCount, 0); 661 662 spin_lock(&GlobalMid_Lock); 663 GlobalMaxActiveXid = 0; 664 GlobalCurrentXid = 0; 665 spin_unlock(&GlobalMid_Lock); 666 spin_lock(&cifs_tcp_ses_lock); 667 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 668 server->max_in_flight = 0; 669 #ifdef CONFIG_CIFS_STATS2 670 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { 671 atomic_set(&server->num_cmds[i], 0); 672 atomic_set(&server->smb2slowcmd[i], 0); 673 server->time_per_cmd[i] = 0; 674 server->slowest_cmd[i] = 0; 675 server->fastest_cmd[0] = 0; 676 } 677 #endif /* CONFIG_CIFS_STATS2 */ 678 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 679 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 680 atomic_set(&tcon->num_smbs_sent, 0); 681 spin_lock(&tcon->stat_lock); 682 tcon->bytes_read = 0; 683 tcon->bytes_written = 0; 684 tcon->stats_from_time = ktime_get_real_seconds(); 685 spin_unlock(&tcon->stat_lock); 686 if (server->ops->clear_stats) 687 server->ops->clear_stats(tcon); 688 } 689 } 690 } 691 spin_unlock(&cifs_tcp_ses_lock); 692 } else { 693 return rc; 694 } 695 696 return count; 697 } 698 699 static int cifs_stats_proc_show(struct seq_file *m, void *v) 700 { 701 int i; 702 #ifdef CONFIG_CIFS_STATS2 703 int j; 704 #endif /* STATS2 */ 705 struct TCP_Server_Info *server; 706 struct cifs_ses *ses; 707 struct cifs_tcon *tcon; 708 709 seq_printf(m, "Resources in use\nCIFS Session: %d\n", 710 sesInfoAllocCount.counter); 711 seq_printf(m, "Share (unique mount targets): %d\n", 712 tconInfoAllocCount.counter); 713 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", 714 buf_alloc_count.counter, 715 cifs_min_rcv + tcpSesAllocCount.counter); 716 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", 717 small_buf_alloc_count.counter, cifs_min_small); 718 #ifdef CONFIG_CIFS_STATS2 719 seq_printf(m, "Total Large %d Small %d Allocations\n", 720 atomic_read(&total_buf_alloc_count), 721 atomic_read(&total_small_buf_alloc_count)); 722 #endif /* CONFIG_CIFS_STATS2 */ 723 724 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count)); 725 seq_printf(m, 726 "\n%d session %d share reconnects\n", 727 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); 728 729 seq_printf(m, 730 "Total vfs operations: %d maximum at one time: %d\n", 731 GlobalCurrentXid, GlobalMaxActiveXid); 732 733 i = 0; 734 spin_lock(&cifs_tcp_ses_lock); 735 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 736 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight); 737 #ifdef CONFIG_CIFS_STATS2 738 seq_puts(m, "\nTotal time spent processing by command. Time "); 739 seq_printf(m, "units are jiffies (%d per second)\n", HZ); 740 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n"); 741 seq_puts(m, " --------\t------\t----------\t-------\t-------\n"); 742 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 743 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j, 744 atomic_read(&server->num_cmds[j]), 745 server->time_per_cmd[j], 746 server->fastest_cmd[j], 747 server->slowest_cmd[j]); 748 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 749 if (atomic_read(&server->smb2slowcmd[j])) { 750 spin_lock(&server->srv_lock); 751 seq_printf(m, " %d slow responses from %s for command %d\n", 752 atomic_read(&server->smb2slowcmd[j]), 753 server->hostname, j); 754 spin_unlock(&server->srv_lock); 755 } 756 #endif /* STATS2 */ 757 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 758 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 759 i++; 760 seq_printf(m, "\n%d) %s", i, tcon->tree_name); 761 if (tcon->need_reconnect) 762 seq_puts(m, "\tDISCONNECTED "); 763 seq_printf(m, "\nSMBs: %d since %ptTs UTC", 764 atomic_read(&tcon->num_smbs_sent), 765 &tcon->stats_from_time); 766 if (server->ops->print_stats) 767 server->ops->print_stats(m, tcon); 768 } 769 } 770 } 771 spin_unlock(&cifs_tcp_ses_lock); 772 773 seq_putc(m, '\n'); 774 return 0; 775 } 776 777 static int cifs_stats_proc_open(struct inode *inode, struct file *file) 778 { 779 return single_open(file, cifs_stats_proc_show, NULL); 780 } 781 782 static const struct proc_ops cifs_stats_proc_ops = { 783 .proc_open = cifs_stats_proc_open, 784 .proc_read = seq_read, 785 .proc_lseek = seq_lseek, 786 .proc_release = single_release, 787 .proc_write = cifs_stats_proc_write, 788 }; 789 790 #ifdef CONFIG_CIFS_SMB_DIRECT 791 #define PROC_FILE_DEFINE(name) \ 792 static ssize_t name##_write(struct file *file, const char __user *buffer, \ 793 size_t count, loff_t *ppos) \ 794 { \ 795 int rc; \ 796 rc = kstrtoint_from_user(buffer, count, 10, &name); \ 797 if (rc) \ 798 return rc; \ 799 return count; \ 800 } \ 801 static int name##_proc_show(struct seq_file *m, void *v) \ 802 { \ 803 seq_printf(m, "%d\n", name); \ 804 return 0; \ 805 } \ 806 static int name##_open(struct inode *inode, struct file *file) \ 807 { \ 808 return single_open(file, name##_proc_show, NULL); \ 809 } \ 810 \ 811 static const struct proc_ops cifs_##name##_proc_fops = { \ 812 .proc_open = name##_open, \ 813 .proc_read = seq_read, \ 814 .proc_lseek = seq_lseek, \ 815 .proc_release = single_release, \ 816 .proc_write = name##_write, \ 817 } 818 819 PROC_FILE_DEFINE(rdma_readwrite_threshold); 820 PROC_FILE_DEFINE(smbd_max_frmr_depth); 821 PROC_FILE_DEFINE(smbd_keep_alive_interval); 822 PROC_FILE_DEFINE(smbd_max_receive_size); 823 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size); 824 PROC_FILE_DEFINE(smbd_max_send_size); 825 PROC_FILE_DEFINE(smbd_send_credit_target); 826 PROC_FILE_DEFINE(smbd_receive_credit_max); 827 #endif 828 829 static struct proc_dir_entry *proc_fs_cifs; 830 static const struct proc_ops cifsFYI_proc_ops; 831 static const struct proc_ops cifs_lookup_cache_proc_ops; 832 static const struct proc_ops traceSMB_proc_ops; 833 static const struct proc_ops cifs_security_flags_proc_ops; 834 static const struct proc_ops cifs_linux_ext_proc_ops; 835 static const struct proc_ops cifs_mount_params_proc_ops; 836 837 void 838 cifs_proc_init(void) 839 { 840 proc_fs_cifs = proc_mkdir("fs/cifs", NULL); 841 if (proc_fs_cifs == NULL) 842 return; 843 844 proc_create_single("DebugData", 0, proc_fs_cifs, 845 cifs_debug_data_proc_show); 846 847 proc_create_single("open_files", 0400, proc_fs_cifs, 848 cifs_debug_files_proc_show); 849 850 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops); 851 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops); 852 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops); 853 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs, 854 &cifs_linux_ext_proc_ops); 855 proc_create("SecurityFlags", 0644, proc_fs_cifs, 856 &cifs_security_flags_proc_ops); 857 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs, 858 &cifs_lookup_cache_proc_ops); 859 860 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops); 861 862 #ifdef CONFIG_CIFS_DFS_UPCALL 863 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops); 864 #endif 865 866 #ifdef CONFIG_CIFS_SMB_DIRECT 867 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs, 868 &cifs_rdma_readwrite_threshold_proc_fops); 869 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs, 870 &cifs_smbd_max_frmr_depth_proc_fops); 871 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs, 872 &cifs_smbd_keep_alive_interval_proc_fops); 873 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs, 874 &cifs_smbd_max_receive_size_proc_fops); 875 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs, 876 &cifs_smbd_max_fragmented_recv_size_proc_fops); 877 proc_create("smbd_max_send_size", 0644, proc_fs_cifs, 878 &cifs_smbd_max_send_size_proc_fops); 879 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs, 880 &cifs_smbd_send_credit_target_proc_fops); 881 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs, 882 &cifs_smbd_receive_credit_max_proc_fops); 883 #endif 884 } 885 886 void 887 cifs_proc_clean(void) 888 { 889 if (proc_fs_cifs == NULL) 890 return; 891 892 remove_proc_entry("DebugData", proc_fs_cifs); 893 remove_proc_entry("open_files", proc_fs_cifs); 894 remove_proc_entry("cifsFYI", proc_fs_cifs); 895 remove_proc_entry("traceSMB", proc_fs_cifs); 896 remove_proc_entry("Stats", proc_fs_cifs); 897 remove_proc_entry("SecurityFlags", proc_fs_cifs); 898 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); 899 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); 900 remove_proc_entry("mount_params", proc_fs_cifs); 901 902 #ifdef CONFIG_CIFS_DFS_UPCALL 903 remove_proc_entry("dfscache", proc_fs_cifs); 904 #endif 905 #ifdef CONFIG_CIFS_SMB_DIRECT 906 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs); 907 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs); 908 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs); 909 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs); 910 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs); 911 remove_proc_entry("smbd_max_send_size", proc_fs_cifs); 912 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs); 913 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs); 914 #endif 915 remove_proc_entry("fs/cifs", NULL); 916 } 917 918 static int cifsFYI_proc_show(struct seq_file *m, void *v) 919 { 920 seq_printf(m, "%d\n", cifsFYI); 921 return 0; 922 } 923 924 static int cifsFYI_proc_open(struct inode *inode, struct file *file) 925 { 926 return single_open(file, cifsFYI_proc_show, NULL); 927 } 928 929 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, 930 size_t count, loff_t *ppos) 931 { 932 char c[2] = { '\0' }; 933 bool bv; 934 int rc; 935 936 rc = get_user(c[0], buffer); 937 if (rc) 938 return rc; 939 if (kstrtobool(c, &bv) == 0) 940 cifsFYI = bv; 941 else if ((c[0] > '1') && (c[0] <= '9')) 942 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ 943 else 944 return -EINVAL; 945 946 return count; 947 } 948 949 static const struct proc_ops cifsFYI_proc_ops = { 950 .proc_open = cifsFYI_proc_open, 951 .proc_read = seq_read, 952 .proc_lseek = seq_lseek, 953 .proc_release = single_release, 954 .proc_write = cifsFYI_proc_write, 955 }; 956 957 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) 958 { 959 seq_printf(m, "%d\n", linuxExtEnabled); 960 return 0; 961 } 962 963 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) 964 { 965 return single_open(file, cifs_linux_ext_proc_show, NULL); 966 } 967 968 static ssize_t cifs_linux_ext_proc_write(struct file *file, 969 const char __user *buffer, size_t count, loff_t *ppos) 970 { 971 int rc; 972 973 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); 974 if (rc) 975 return rc; 976 977 return count; 978 } 979 980 static const struct proc_ops cifs_linux_ext_proc_ops = { 981 .proc_open = cifs_linux_ext_proc_open, 982 .proc_read = seq_read, 983 .proc_lseek = seq_lseek, 984 .proc_release = single_release, 985 .proc_write = cifs_linux_ext_proc_write, 986 }; 987 988 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) 989 { 990 seq_printf(m, "%d\n", lookupCacheEnabled); 991 return 0; 992 } 993 994 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) 995 { 996 return single_open(file, cifs_lookup_cache_proc_show, NULL); 997 } 998 999 static ssize_t cifs_lookup_cache_proc_write(struct file *file, 1000 const char __user *buffer, size_t count, loff_t *ppos) 1001 { 1002 int rc; 1003 1004 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled); 1005 if (rc) 1006 return rc; 1007 1008 return count; 1009 } 1010 1011 static const struct proc_ops cifs_lookup_cache_proc_ops = { 1012 .proc_open = cifs_lookup_cache_proc_open, 1013 .proc_read = seq_read, 1014 .proc_lseek = seq_lseek, 1015 .proc_release = single_release, 1016 .proc_write = cifs_lookup_cache_proc_write, 1017 }; 1018 1019 static int traceSMB_proc_show(struct seq_file *m, void *v) 1020 { 1021 seq_printf(m, "%d\n", traceSMB); 1022 return 0; 1023 } 1024 1025 static int traceSMB_proc_open(struct inode *inode, struct file *file) 1026 { 1027 return single_open(file, traceSMB_proc_show, NULL); 1028 } 1029 1030 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, 1031 size_t count, loff_t *ppos) 1032 { 1033 int rc; 1034 1035 rc = kstrtobool_from_user(buffer, count, &traceSMB); 1036 if (rc) 1037 return rc; 1038 1039 return count; 1040 } 1041 1042 static const struct proc_ops traceSMB_proc_ops = { 1043 .proc_open = traceSMB_proc_open, 1044 .proc_read = seq_read, 1045 .proc_lseek = seq_lseek, 1046 .proc_release = single_release, 1047 .proc_write = traceSMB_proc_write, 1048 }; 1049 1050 static int cifs_security_flags_proc_show(struct seq_file *m, void *v) 1051 { 1052 seq_printf(m, "0x%x\n", global_secflags); 1053 return 0; 1054 } 1055 1056 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) 1057 { 1058 return single_open(file, cifs_security_flags_proc_show, NULL); 1059 } 1060 1061 /* 1062 * Ensure that if someone sets a MUST flag, that we disable all other MAY 1063 * flags except for the ones corresponding to the given MUST flag. If there are 1064 * multiple MUST flags, then try to prefer more secure ones. 1065 */ 1066 static void 1067 cifs_security_flags_handle_must_flags(unsigned int *flags) 1068 { 1069 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN; 1070 1071 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) 1072 *flags = CIFSSEC_MUST_KRB5; 1073 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) 1074 *flags = CIFSSEC_MUST_NTLMSSP; 1075 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) 1076 *flags = CIFSSEC_MUST_NTLMV2; 1077 1078 *flags |= signflags; 1079 } 1080 1081 static ssize_t cifs_security_flags_proc_write(struct file *file, 1082 const char __user *buffer, size_t count, loff_t *ppos) 1083 { 1084 int rc; 1085 unsigned int flags; 1086 char flags_string[12]; 1087 bool bv; 1088 1089 if ((count < 1) || (count > 11)) 1090 return -EINVAL; 1091 1092 memset(flags_string, 0, 12); 1093 1094 if (copy_from_user(flags_string, buffer, count)) 1095 return -EFAULT; 1096 1097 if (count < 3) { 1098 /* single char or single char followed by null */ 1099 if (kstrtobool(flags_string, &bv) == 0) { 1100 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; 1101 return count; 1102 } else if (!isdigit(flags_string[0])) { 1103 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1104 flags_string); 1105 return -EINVAL; 1106 } 1107 } 1108 1109 /* else we have a number */ 1110 rc = kstrtouint(flags_string, 0, &flags); 1111 if (rc) { 1112 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1113 flags_string); 1114 return rc; 1115 } 1116 1117 cifs_dbg(FYI, "sec flags 0x%x\n", flags); 1118 1119 if (flags == 0) { 1120 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); 1121 return -EINVAL; 1122 } 1123 1124 if (flags & ~CIFSSEC_MASK) { 1125 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", 1126 flags & ~CIFSSEC_MASK); 1127 return -EINVAL; 1128 } 1129 1130 cifs_security_flags_handle_must_flags(&flags); 1131 1132 /* flags look ok - update the global security flags for cifs module */ 1133 global_secflags = flags; 1134 if (global_secflags & CIFSSEC_MUST_SIGN) { 1135 /* requiring signing implies signing is allowed */ 1136 global_secflags |= CIFSSEC_MAY_SIGN; 1137 cifs_dbg(FYI, "packet signing now required\n"); 1138 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { 1139 cifs_dbg(FYI, "packet signing disabled\n"); 1140 } 1141 /* BB should we turn on MAY flags for other MUST options? */ 1142 return count; 1143 } 1144 1145 static const struct proc_ops cifs_security_flags_proc_ops = { 1146 .proc_open = cifs_security_flags_proc_open, 1147 .proc_read = seq_read, 1148 .proc_lseek = seq_lseek, 1149 .proc_release = single_release, 1150 .proc_write = cifs_security_flags_proc_write, 1151 }; 1152 1153 /* To make it easier to debug, can help to show mount params */ 1154 static int cifs_mount_params_proc_show(struct seq_file *m, void *v) 1155 { 1156 const struct fs_parameter_spec *p; 1157 const char *type; 1158 1159 for (p = smb3_fs_parameters; p->name; p++) { 1160 /* cannot use switch with pointers... */ 1161 if (!p->type) { 1162 if (p->flags == fs_param_neg_with_no) 1163 type = "noflag"; 1164 else 1165 type = "flag"; 1166 } else if (p->type == fs_param_is_bool) 1167 type = "bool"; 1168 else if (p->type == fs_param_is_u32) 1169 type = "u32"; 1170 else if (p->type == fs_param_is_u64) 1171 type = "u64"; 1172 else if (p->type == fs_param_is_string) 1173 type = "string"; 1174 else 1175 type = "unknown"; 1176 1177 seq_printf(m, "%s:%s\n", p->name, type); 1178 } 1179 1180 return 0; 1181 } 1182 1183 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file) 1184 { 1185 return single_open(file, cifs_mount_params_proc_show, NULL); 1186 } 1187 1188 static const struct proc_ops cifs_mount_params_proc_ops = { 1189 .proc_open = cifs_mount_params_proc_open, 1190 .proc_read = seq_read, 1191 .proc_lseek = seq_lseek, 1192 .proc_release = single_release, 1193 /* No need for write for now */ 1194 /* .proc_write = cifs_mount_params_proc_write, */ 1195 }; 1196 1197 #else 1198 inline void cifs_proc_init(void) 1199 { 1200 } 1201 1202 inline void cifs_proc_clean(void) 1203 { 1204 } 1205 #endif /* PROC_FS */ 1206