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 if (cifs_ses_exiting(ses)) 254 continue; 255 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 256 spin_lock(&tcon->open_file_lock); 257 list_for_each_entry(cfile, &tcon->openFileList, tlist) { 258 seq_printf(m, 259 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd", 260 tcon->tid, 261 ses->Suid, 262 cfile->fid.persistent_fid, 263 cfile->f_flags, 264 cfile->count, 265 cfile->pid, 266 from_kuid(&init_user_ns, cfile->uid), 267 cfile->dentry); 268 #ifdef CONFIG_CIFS_DEBUG2 269 seq_printf(m, " %llu\n", cfile->fid.mid); 270 #else 271 seq_printf(m, "\n"); 272 #endif /* CIFS_DEBUG2 */ 273 } 274 spin_unlock(&tcon->open_file_lock); 275 } 276 } 277 } 278 spin_unlock(&cifs_tcp_ses_lock); 279 seq_putc(m, '\n'); 280 return 0; 281 } 282 283 static __always_inline const char *compression_alg_str(__le16 alg) 284 { 285 switch (alg) { 286 case SMB3_COMPRESS_NONE: 287 return "NONE"; 288 case SMB3_COMPRESS_LZNT1: 289 return "LZNT1"; 290 case SMB3_COMPRESS_LZ77: 291 return "LZ77"; 292 case SMB3_COMPRESS_LZ77_HUFF: 293 return "LZ77-Huffman"; 294 case SMB3_COMPRESS_PATTERN: 295 return "Pattern_V1"; 296 default: 297 return "invalid"; 298 } 299 } 300 301 static int cifs_debug_data_proc_show(struct seq_file *m, void *v) 302 { 303 struct mid_q_entry *mid_entry; 304 struct TCP_Server_Info *server; 305 struct TCP_Server_Info *chan_server; 306 struct cifs_ses *ses; 307 struct cifs_tcon *tcon; 308 struct cifs_server_iface *iface; 309 size_t iface_weight = 0, iface_min_speed = 0; 310 struct cifs_server_iface *last_iface = NULL; 311 int c, i, j; 312 313 seq_puts(m, 314 "Display Internal CIFS Data Structures for Debugging\n" 315 "---------------------------------------------------\n"); 316 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); 317 seq_printf(m, "Features:"); 318 #ifdef CONFIG_CIFS_DFS_UPCALL 319 seq_printf(m, " DFS"); 320 #endif 321 #ifdef CONFIG_CIFS_FSCACHE 322 seq_printf(m, ",FSCACHE"); 323 #endif 324 #ifdef CONFIG_CIFS_SMB_DIRECT 325 seq_printf(m, ",SMB_DIRECT"); 326 #endif 327 #ifdef CONFIG_CIFS_STATS2 328 seq_printf(m, ",STATS2"); 329 #else 330 seq_printf(m, ",STATS"); 331 #endif 332 #ifdef CONFIG_CIFS_DEBUG2 333 seq_printf(m, ",DEBUG2"); 334 #elif defined(CONFIG_CIFS_DEBUG) 335 seq_printf(m, ",DEBUG"); 336 #endif 337 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 338 seq_printf(m, ",ALLOW_INSECURE_LEGACY"); 339 #endif 340 #ifdef CONFIG_CIFS_POSIX 341 seq_printf(m, ",CIFS_POSIX"); 342 #endif 343 #ifdef CONFIG_CIFS_UPCALL 344 seq_printf(m, ",UPCALL(SPNEGO)"); 345 #endif 346 #ifdef CONFIG_CIFS_XATTR 347 seq_printf(m, ",XATTR"); 348 #endif 349 seq_printf(m, ",ACL"); 350 #ifdef CONFIG_CIFS_SWN_UPCALL 351 seq_puts(m, ",WITNESS"); 352 #endif 353 #ifdef CONFIG_CIFS_COMPRESSION 354 seq_puts(m, ",COMPRESSION"); 355 #endif 356 seq_putc(m, '\n'); 357 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize); 358 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); 359 360 seq_printf(m, "\nServers: "); 361 362 c = 0; 363 spin_lock(&cifs_tcp_ses_lock); 364 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 365 /* channel info will be printed as a part of sessions below */ 366 if (SERVER_IS_CHAN(server)) 367 continue; 368 369 c++; 370 seq_printf(m, "\n%d) ConnectionId: 0x%llx ", 371 c, server->conn_id); 372 373 spin_lock(&server->srv_lock); 374 if (server->hostname) 375 seq_printf(m, "Hostname: %s ", server->hostname); 376 seq_printf(m, "\nClientGUID: %pUL", server->client_guid); 377 spin_unlock(&server->srv_lock); 378 #ifdef CONFIG_CIFS_SMB_DIRECT 379 if (!server->rdma) 380 goto skip_rdma; 381 382 if (!server->smbd_conn) { 383 seq_printf(m, "\nSMBDirect transport not available"); 384 goto skip_rdma; 385 } 386 387 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x " 388 "transport status: %x", 389 server->smbd_conn->protocol, 390 server->smbd_conn->transport_status); 391 seq_printf(m, "\nConn receive_credit_max: %x " 392 "send_credit_target: %x max_send_size: %x", 393 server->smbd_conn->receive_credit_max, 394 server->smbd_conn->send_credit_target, 395 server->smbd_conn->max_send_size); 396 seq_printf(m, "\nConn max_fragmented_recv_size: %x " 397 "max_fragmented_send_size: %x max_receive_size:%x", 398 server->smbd_conn->max_fragmented_recv_size, 399 server->smbd_conn->max_fragmented_send_size, 400 server->smbd_conn->max_receive_size); 401 seq_printf(m, "\nConn keep_alive_interval: %x " 402 "max_readwrite_size: %x rdma_readwrite_threshold: %x", 403 server->smbd_conn->keep_alive_interval, 404 server->smbd_conn->max_readwrite_size, 405 server->smbd_conn->rdma_readwrite_threshold); 406 seq_printf(m, "\nDebug count_get_receive_buffer: %x " 407 "count_put_receive_buffer: %x count_send_empty: %x", 408 server->smbd_conn->count_get_receive_buffer, 409 server->smbd_conn->count_put_receive_buffer, 410 server->smbd_conn->count_send_empty); 411 seq_printf(m, "\nRead Queue count_reassembly_queue: %x " 412 "count_enqueue_reassembly_queue: %x " 413 "count_dequeue_reassembly_queue: %x " 414 "fragment_reassembly_remaining: %x " 415 "reassembly_data_length: %x " 416 "reassembly_queue_length: %x", 417 server->smbd_conn->count_reassembly_queue, 418 server->smbd_conn->count_enqueue_reassembly_queue, 419 server->smbd_conn->count_dequeue_reassembly_queue, 420 server->smbd_conn->fragment_reassembly_remaining, 421 server->smbd_conn->reassembly_data_length, 422 server->smbd_conn->reassembly_queue_length); 423 seq_printf(m, "\nCurrent Credits send_credits: %x " 424 "receive_credits: %x receive_credit_target: %x", 425 atomic_read(&server->smbd_conn->send_credits), 426 atomic_read(&server->smbd_conn->receive_credits), 427 server->smbd_conn->receive_credit_target); 428 seq_printf(m, "\nPending send_pending: %x ", 429 atomic_read(&server->smbd_conn->send_pending)); 430 seq_printf(m, "\nReceive buffers count_receive_queue: %x " 431 "count_empty_packet_queue: %x", 432 server->smbd_conn->count_receive_queue, 433 server->smbd_conn->count_empty_packet_queue); 434 seq_printf(m, "\nMR responder_resources: %x " 435 "max_frmr_depth: %x mr_type: %x", 436 server->smbd_conn->responder_resources, 437 server->smbd_conn->max_frmr_depth, 438 server->smbd_conn->mr_type); 439 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x", 440 atomic_read(&server->smbd_conn->mr_ready_count), 441 atomic_read(&server->smbd_conn->mr_used_count)); 442 skip_rdma: 443 #endif 444 seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x", 445 server->credits, 446 server->echo_credits, 447 server->oplock_credits, 448 server->dialect); 449 if (server->sign) 450 seq_printf(m, " signed"); 451 if (server->posix_ext_supported) 452 seq_printf(m, " posix"); 453 if (server->nosharesock) 454 seq_printf(m, " nosharesock"); 455 456 seq_printf(m, "\nServer capabilities: 0x%x", server->capabilities); 457 458 if (server->rdma) 459 seq_printf(m, "\nRDMA "); 460 seq_printf(m, "\nTCP status: %d Instance: %d" 461 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d", 462 server->tcpStatus, 463 server->reconnect_instance, 464 server->srv_count, 465 server->sec_mode, in_flight(server)); 466 #ifdef CONFIG_NET_NS 467 if (server->net) 468 seq_printf(m, " Net namespace: %u ", server->net->ns.inum); 469 #endif /* NET_NS */ 470 471 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d", 472 atomic_read(&server->in_send), 473 atomic_read(&server->num_waiters)); 474 475 if (server->leaf_fullpath) { 476 seq_printf(m, "\nDFS leaf full path: %s", 477 server->leaf_fullpath); 478 } 479 480 seq_puts(m, "\nCompression: "); 481 if (!IS_ENABLED(CONFIG_CIFS_COMPRESSION)) 482 seq_puts(m, "no built-in support"); 483 else if (!server->compression.requested) 484 seq_puts(m, "disabled on mount"); 485 else if (server->compression.enabled) 486 seq_printf(m, "enabled (%s)", compression_alg_str(server->compression.alg)); 487 else 488 seq_puts(m, "disabled (not supported by this server)"); 489 490 seq_printf(m, "\n\n\tSessions: "); 491 i = 0; 492 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 493 spin_lock(&ses->ses_lock); 494 if (ses->ses_status == SES_EXITING) { 495 spin_unlock(&ses->ses_lock); 496 continue; 497 } 498 i++; 499 if ((ses->serverDomain == NULL) || 500 (ses->serverOS == NULL) || 501 (ses->serverNOS == NULL)) { 502 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ", 503 i, ses->ip_addr, ses->ses_count, 504 ses->capabilities, ses->ses_status); 505 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) 506 seq_printf(m, "Guest "); 507 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) 508 seq_printf(m, "Anonymous "); 509 } else { 510 seq_printf(m, 511 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s " 512 "\n\tNOS: %s\tCapability: 0x%x" 513 "\n\tSMB session status: %d ", 514 i, ses->ip_addr, ses->serverDomain, 515 ses->ses_count, ses->serverOS, ses->serverNOS, 516 ses->capabilities, ses->ses_status); 517 } 518 if (ses->expired_pwd) 519 seq_puts(m, "password no longer valid "); 520 spin_unlock(&ses->ses_lock); 521 522 seq_printf(m, "\n\tSecurity type: %s ", 523 get_security_type_str(server->ops->select_sectype(server, ses->sectype))); 524 525 /* dump session id helpful for use with network trace */ 526 seq_printf(m, " SessionId: 0x%llx", ses->Suid); 527 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) { 528 seq_puts(m, " encrypted"); 529 /* can help in debugging to show encryption type */ 530 if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM) 531 seq_puts(m, "(gcm256)"); 532 } 533 if (ses->sign) 534 seq_puts(m, " signed"); 535 536 seq_printf(m, "\n\tUser: %d Cred User: %d", 537 from_kuid(&init_user_ns, ses->linux_uid), 538 from_kuid(&init_user_ns, ses->cred_uid)); 539 540 if (ses->dfs_root_ses) { 541 seq_printf(m, "\n\tDFS root session id: 0x%llx", 542 ses->dfs_root_ses->Suid); 543 } 544 545 spin_lock(&ses->chan_lock); 546 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0)) 547 seq_puts(m, "\tPrimary channel: DISCONNECTED "); 548 if (CIFS_CHAN_IN_RECONNECT(ses, 0)) 549 seq_puts(m, "\t[RECONNECTING] "); 550 551 if (ses->chan_count > 1) { 552 seq_printf(m, "\n\n\tExtra Channels: %zu ", 553 ses->chan_count-1); 554 for (j = 1; j < ses->chan_count; j++) { 555 cifs_dump_channel(m, j, &ses->chans[j]); 556 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j)) 557 seq_puts(m, "\tDISCONNECTED "); 558 if (CIFS_CHAN_IN_RECONNECT(ses, j)) 559 seq_puts(m, "\t[RECONNECTING] "); 560 } 561 } 562 spin_unlock(&ses->chan_lock); 563 564 seq_puts(m, "\n\n\tShares: "); 565 j = 0; 566 567 seq_printf(m, "\n\t%d) IPC: ", j); 568 if (ses->tcon_ipc) 569 cifs_debug_tcon(m, ses->tcon_ipc); 570 else 571 seq_puts(m, "none\n"); 572 573 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 574 ++j; 575 seq_printf(m, "\n\t%d) ", j); 576 cifs_debug_tcon(m, tcon); 577 } 578 579 spin_lock(&ses->iface_lock); 580 if (ses->iface_count) 581 seq_printf(m, "\n\n\tServer interfaces: %zu" 582 "\tLast updated: %lu seconds ago", 583 ses->iface_count, 584 (jiffies - ses->iface_last_update) / HZ); 585 586 last_iface = list_last_entry(&ses->iface_list, 587 struct cifs_server_iface, 588 iface_head); 589 iface_min_speed = last_iface->speed; 590 591 j = 0; 592 list_for_each_entry(iface, &ses->iface_list, 593 iface_head) { 594 seq_printf(m, "\n\t%d)", ++j); 595 cifs_dump_iface(m, iface); 596 597 iface_weight = iface->speed / iface_min_speed; 598 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)" 599 "\n\t\tAllocated channels: %u\n", 600 iface->weight_fulfilled, 601 iface_weight, 602 iface->num_channels); 603 604 if (is_ses_using_iface(ses, iface)) 605 seq_puts(m, "\t\t[CONNECTED]\n"); 606 } 607 spin_unlock(&ses->iface_lock); 608 609 seq_puts(m, "\n\n\tMIDs: "); 610 spin_lock(&ses->chan_lock); 611 for (j = 0; j < ses->chan_count; j++) { 612 chan_server = ses->chans[j].server; 613 if (!chan_server) 614 continue; 615 616 if (list_empty(&chan_server->pending_mid_q)) 617 continue; 618 619 seq_printf(m, "\n\tServer ConnectionId: 0x%llx", 620 chan_server->conn_id); 621 spin_lock(&chan_server->mid_lock); 622 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) { 623 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu", 624 mid_entry->mid_state, 625 le16_to_cpu(mid_entry->command), 626 mid_entry->pid, 627 mid_entry->callback_data, 628 mid_entry->mid); 629 } 630 spin_unlock(&chan_server->mid_lock); 631 } 632 spin_unlock(&ses->chan_lock); 633 seq_puts(m, "\n--\n"); 634 } 635 if (i == 0) 636 seq_printf(m, "\n\t\t[NONE]"); 637 } 638 if (c == 0) 639 seq_printf(m, "\n\t[NONE]"); 640 641 spin_unlock(&cifs_tcp_ses_lock); 642 seq_putc(m, '\n'); 643 cifs_swn_dump(m); 644 645 /* BB add code to dump additional info such as TCP session info now */ 646 return 0; 647 } 648 649 static ssize_t cifs_stats_proc_write(struct file *file, 650 const char __user *buffer, size_t count, loff_t *ppos) 651 { 652 bool bv; 653 int rc; 654 struct TCP_Server_Info *server; 655 struct cifs_ses *ses; 656 struct cifs_tcon *tcon; 657 658 rc = kstrtobool_from_user(buffer, count, &bv); 659 if (rc == 0) { 660 #ifdef CONFIG_CIFS_STATS2 661 int i; 662 663 atomic_set(&total_buf_alloc_count, 0); 664 atomic_set(&total_small_buf_alloc_count, 0); 665 #endif /* CONFIG_CIFS_STATS2 */ 666 atomic_set(&tcpSesReconnectCount, 0); 667 atomic_set(&tconInfoReconnectCount, 0); 668 669 spin_lock(&GlobalMid_Lock); 670 GlobalMaxActiveXid = 0; 671 GlobalCurrentXid = 0; 672 spin_unlock(&GlobalMid_Lock); 673 spin_lock(&cifs_tcp_ses_lock); 674 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 675 server->max_in_flight = 0; 676 #ifdef CONFIG_CIFS_STATS2 677 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { 678 atomic_set(&server->num_cmds[i], 0); 679 atomic_set(&server->smb2slowcmd[i], 0); 680 server->time_per_cmd[i] = 0; 681 server->slowest_cmd[i] = 0; 682 server->fastest_cmd[0] = 0; 683 } 684 #endif /* CONFIG_CIFS_STATS2 */ 685 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 686 if (cifs_ses_exiting(ses)) 687 continue; 688 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 689 atomic_set(&tcon->num_smbs_sent, 0); 690 spin_lock(&tcon->stat_lock); 691 tcon->bytes_read = 0; 692 tcon->bytes_written = 0; 693 tcon->stats_from_time = ktime_get_real_seconds(); 694 spin_unlock(&tcon->stat_lock); 695 if (server->ops->clear_stats) 696 server->ops->clear_stats(tcon); 697 } 698 } 699 } 700 spin_unlock(&cifs_tcp_ses_lock); 701 } else { 702 return rc; 703 } 704 705 return count; 706 } 707 708 static int cifs_stats_proc_show(struct seq_file *m, void *v) 709 { 710 int i; 711 #ifdef CONFIG_CIFS_STATS2 712 int j; 713 #endif /* STATS2 */ 714 struct TCP_Server_Info *server; 715 struct cifs_ses *ses; 716 struct cifs_tcon *tcon; 717 718 seq_printf(m, "Resources in use\nCIFS Session: %d\n", 719 sesInfoAllocCount.counter); 720 seq_printf(m, "Share (unique mount targets): %d\n", 721 tconInfoAllocCount.counter); 722 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", 723 buf_alloc_count.counter, 724 cifs_min_rcv + tcpSesAllocCount.counter); 725 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", 726 small_buf_alloc_count.counter, cifs_min_small); 727 #ifdef CONFIG_CIFS_STATS2 728 seq_printf(m, "Total Large %d Small %d Allocations\n", 729 atomic_read(&total_buf_alloc_count), 730 atomic_read(&total_small_buf_alloc_count)); 731 #endif /* CONFIG_CIFS_STATS2 */ 732 733 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count)); 734 seq_printf(m, 735 "\n%d session %d share reconnects\n", 736 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); 737 738 seq_printf(m, 739 "Total vfs operations: %d maximum at one time: %d\n", 740 GlobalCurrentXid, GlobalMaxActiveXid); 741 742 i = 0; 743 spin_lock(&cifs_tcp_ses_lock); 744 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 745 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight); 746 #ifdef CONFIG_CIFS_STATS2 747 seq_puts(m, "\nTotal time spent processing by command. Time "); 748 seq_printf(m, "units are jiffies (%d per second)\n", HZ); 749 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n"); 750 seq_puts(m, " --------\t------\t----------\t-------\t-------\n"); 751 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 752 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j, 753 atomic_read(&server->num_cmds[j]), 754 server->time_per_cmd[j], 755 server->fastest_cmd[j], 756 server->slowest_cmd[j]); 757 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 758 if (atomic_read(&server->smb2slowcmd[j])) { 759 spin_lock(&server->srv_lock); 760 seq_printf(m, " %d slow responses from %s for command %d\n", 761 atomic_read(&server->smb2slowcmd[j]), 762 server->hostname, j); 763 spin_unlock(&server->srv_lock); 764 } 765 #endif /* STATS2 */ 766 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 767 if (cifs_ses_exiting(ses)) 768 continue; 769 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 770 i++; 771 seq_printf(m, "\n%d) %s", i, tcon->tree_name); 772 if (tcon->need_reconnect) 773 seq_puts(m, "\tDISCONNECTED "); 774 seq_printf(m, "\nSMBs: %d since %ptTs UTC", 775 atomic_read(&tcon->num_smbs_sent), 776 &tcon->stats_from_time); 777 if (server->ops->print_stats) 778 server->ops->print_stats(m, tcon); 779 } 780 } 781 } 782 spin_unlock(&cifs_tcp_ses_lock); 783 784 seq_putc(m, '\n'); 785 return 0; 786 } 787 788 static int cifs_stats_proc_open(struct inode *inode, struct file *file) 789 { 790 return single_open(file, cifs_stats_proc_show, NULL); 791 } 792 793 static const struct proc_ops cifs_stats_proc_ops = { 794 .proc_open = cifs_stats_proc_open, 795 .proc_read = seq_read, 796 .proc_lseek = seq_lseek, 797 .proc_release = single_release, 798 .proc_write = cifs_stats_proc_write, 799 }; 800 801 #ifdef CONFIG_CIFS_SMB_DIRECT 802 #define PROC_FILE_DEFINE(name) \ 803 static ssize_t name##_write(struct file *file, const char __user *buffer, \ 804 size_t count, loff_t *ppos) \ 805 { \ 806 int rc; \ 807 rc = kstrtoint_from_user(buffer, count, 10, &name); \ 808 if (rc) \ 809 return rc; \ 810 return count; \ 811 } \ 812 static int name##_proc_show(struct seq_file *m, void *v) \ 813 { \ 814 seq_printf(m, "%d\n", name); \ 815 return 0; \ 816 } \ 817 static int name##_open(struct inode *inode, struct file *file) \ 818 { \ 819 return single_open(file, name##_proc_show, NULL); \ 820 } \ 821 \ 822 static const struct proc_ops cifs_##name##_proc_fops = { \ 823 .proc_open = name##_open, \ 824 .proc_read = seq_read, \ 825 .proc_lseek = seq_lseek, \ 826 .proc_release = single_release, \ 827 .proc_write = name##_write, \ 828 } 829 830 PROC_FILE_DEFINE(rdma_readwrite_threshold); 831 PROC_FILE_DEFINE(smbd_max_frmr_depth); 832 PROC_FILE_DEFINE(smbd_keep_alive_interval); 833 PROC_FILE_DEFINE(smbd_max_receive_size); 834 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size); 835 PROC_FILE_DEFINE(smbd_max_send_size); 836 PROC_FILE_DEFINE(smbd_send_credit_target); 837 PROC_FILE_DEFINE(smbd_receive_credit_max); 838 #endif 839 840 static struct proc_dir_entry *proc_fs_cifs; 841 static const struct proc_ops cifsFYI_proc_ops; 842 static const struct proc_ops cifs_lookup_cache_proc_ops; 843 static const struct proc_ops traceSMB_proc_ops; 844 static const struct proc_ops cifs_security_flags_proc_ops; 845 static const struct proc_ops cifs_linux_ext_proc_ops; 846 static const struct proc_ops cifs_mount_params_proc_ops; 847 848 void 849 cifs_proc_init(void) 850 { 851 proc_fs_cifs = proc_mkdir("fs/cifs", NULL); 852 if (proc_fs_cifs == NULL) 853 return; 854 855 proc_create_single("DebugData", 0, proc_fs_cifs, 856 cifs_debug_data_proc_show); 857 858 proc_create_single("open_files", 0400, proc_fs_cifs, 859 cifs_debug_files_proc_show); 860 861 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops); 862 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops); 863 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops); 864 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs, 865 &cifs_linux_ext_proc_ops); 866 proc_create("SecurityFlags", 0644, proc_fs_cifs, 867 &cifs_security_flags_proc_ops); 868 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs, 869 &cifs_lookup_cache_proc_ops); 870 871 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops); 872 873 #ifdef CONFIG_CIFS_DFS_UPCALL 874 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops); 875 #endif 876 877 #ifdef CONFIG_CIFS_SMB_DIRECT 878 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs, 879 &cifs_rdma_readwrite_threshold_proc_fops); 880 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs, 881 &cifs_smbd_max_frmr_depth_proc_fops); 882 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs, 883 &cifs_smbd_keep_alive_interval_proc_fops); 884 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs, 885 &cifs_smbd_max_receive_size_proc_fops); 886 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs, 887 &cifs_smbd_max_fragmented_recv_size_proc_fops); 888 proc_create("smbd_max_send_size", 0644, proc_fs_cifs, 889 &cifs_smbd_max_send_size_proc_fops); 890 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs, 891 &cifs_smbd_send_credit_target_proc_fops); 892 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs, 893 &cifs_smbd_receive_credit_max_proc_fops); 894 #endif 895 } 896 897 void 898 cifs_proc_clean(void) 899 { 900 if (proc_fs_cifs == NULL) 901 return; 902 903 remove_proc_entry("DebugData", proc_fs_cifs); 904 remove_proc_entry("open_files", proc_fs_cifs); 905 remove_proc_entry("cifsFYI", proc_fs_cifs); 906 remove_proc_entry("traceSMB", proc_fs_cifs); 907 remove_proc_entry("Stats", proc_fs_cifs); 908 remove_proc_entry("SecurityFlags", proc_fs_cifs); 909 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); 910 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); 911 remove_proc_entry("mount_params", proc_fs_cifs); 912 913 #ifdef CONFIG_CIFS_DFS_UPCALL 914 remove_proc_entry("dfscache", proc_fs_cifs); 915 #endif 916 #ifdef CONFIG_CIFS_SMB_DIRECT 917 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs); 918 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs); 919 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs); 920 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs); 921 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs); 922 remove_proc_entry("smbd_max_send_size", proc_fs_cifs); 923 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs); 924 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs); 925 #endif 926 remove_proc_entry("fs/cifs", NULL); 927 } 928 929 static int cifsFYI_proc_show(struct seq_file *m, void *v) 930 { 931 seq_printf(m, "%d\n", cifsFYI); 932 return 0; 933 } 934 935 static int cifsFYI_proc_open(struct inode *inode, struct file *file) 936 { 937 return single_open(file, cifsFYI_proc_show, NULL); 938 } 939 940 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, 941 size_t count, loff_t *ppos) 942 { 943 char c[2] = { '\0' }; 944 bool bv; 945 int rc; 946 947 rc = get_user(c[0], buffer); 948 if (rc) 949 return rc; 950 if (kstrtobool(c, &bv) == 0) 951 cifsFYI = bv; 952 else if ((c[0] > '1') && (c[0] <= '9')) 953 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ 954 else 955 return -EINVAL; 956 957 return count; 958 } 959 960 static const struct proc_ops cifsFYI_proc_ops = { 961 .proc_open = cifsFYI_proc_open, 962 .proc_read = seq_read, 963 .proc_lseek = seq_lseek, 964 .proc_release = single_release, 965 .proc_write = cifsFYI_proc_write, 966 }; 967 968 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) 969 { 970 seq_printf(m, "%d\n", linuxExtEnabled); 971 return 0; 972 } 973 974 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) 975 { 976 return single_open(file, cifs_linux_ext_proc_show, NULL); 977 } 978 979 static ssize_t cifs_linux_ext_proc_write(struct file *file, 980 const char __user *buffer, size_t count, loff_t *ppos) 981 { 982 int rc; 983 984 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); 985 if (rc) 986 return rc; 987 988 return count; 989 } 990 991 static const struct proc_ops cifs_linux_ext_proc_ops = { 992 .proc_open = cifs_linux_ext_proc_open, 993 .proc_read = seq_read, 994 .proc_lseek = seq_lseek, 995 .proc_release = single_release, 996 .proc_write = cifs_linux_ext_proc_write, 997 }; 998 999 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) 1000 { 1001 seq_printf(m, "%d\n", lookupCacheEnabled); 1002 return 0; 1003 } 1004 1005 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) 1006 { 1007 return single_open(file, cifs_lookup_cache_proc_show, NULL); 1008 } 1009 1010 static ssize_t cifs_lookup_cache_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, &lookupCacheEnabled); 1016 if (rc) 1017 return rc; 1018 1019 return count; 1020 } 1021 1022 static const struct proc_ops cifs_lookup_cache_proc_ops = { 1023 .proc_open = cifs_lookup_cache_proc_open, 1024 .proc_read = seq_read, 1025 .proc_lseek = seq_lseek, 1026 .proc_release = single_release, 1027 .proc_write = cifs_lookup_cache_proc_write, 1028 }; 1029 1030 static int traceSMB_proc_show(struct seq_file *m, void *v) 1031 { 1032 seq_printf(m, "%d\n", traceSMB); 1033 return 0; 1034 } 1035 1036 static int traceSMB_proc_open(struct inode *inode, struct file *file) 1037 { 1038 return single_open(file, traceSMB_proc_show, NULL); 1039 } 1040 1041 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, 1042 size_t count, loff_t *ppos) 1043 { 1044 int rc; 1045 1046 rc = kstrtobool_from_user(buffer, count, &traceSMB); 1047 if (rc) 1048 return rc; 1049 1050 return count; 1051 } 1052 1053 static const struct proc_ops traceSMB_proc_ops = { 1054 .proc_open = traceSMB_proc_open, 1055 .proc_read = seq_read, 1056 .proc_lseek = seq_lseek, 1057 .proc_release = single_release, 1058 .proc_write = traceSMB_proc_write, 1059 }; 1060 1061 static int cifs_security_flags_proc_show(struct seq_file *m, void *v) 1062 { 1063 seq_printf(m, "0x%x\n", global_secflags); 1064 return 0; 1065 } 1066 1067 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) 1068 { 1069 return single_open(file, cifs_security_flags_proc_show, NULL); 1070 } 1071 1072 /* 1073 * Ensure that if someone sets a MUST flag, that we disable all other MAY 1074 * flags except for the ones corresponding to the given MUST flag. If there are 1075 * multiple MUST flags, then try to prefer more secure ones. 1076 */ 1077 static void 1078 cifs_security_flags_handle_must_flags(unsigned int *flags) 1079 { 1080 unsigned int signflags = *flags & (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL); 1081 1082 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) 1083 *flags = CIFSSEC_MUST_KRB5; 1084 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) 1085 *flags = CIFSSEC_MUST_NTLMSSP; 1086 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) 1087 *flags = CIFSSEC_MUST_NTLMV2; 1088 1089 *flags |= signflags; 1090 } 1091 1092 static ssize_t cifs_security_flags_proc_write(struct file *file, 1093 const char __user *buffer, size_t count, loff_t *ppos) 1094 { 1095 int rc; 1096 unsigned int flags; 1097 char flags_string[12]; 1098 bool bv; 1099 1100 if ((count < 1) || (count > 11)) 1101 return -EINVAL; 1102 1103 memset(flags_string, 0, 12); 1104 1105 if (copy_from_user(flags_string, buffer, count)) 1106 return -EFAULT; 1107 1108 if (count < 3) { 1109 /* single char or single char followed by null */ 1110 if (kstrtobool(flags_string, &bv) == 0) { 1111 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; 1112 return count; 1113 } else if (!isdigit(flags_string[0])) { 1114 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1115 flags_string); 1116 return -EINVAL; 1117 } 1118 } 1119 1120 /* else we have a number */ 1121 rc = kstrtouint(flags_string, 0, &flags); 1122 if (rc) { 1123 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1124 flags_string); 1125 return rc; 1126 } 1127 1128 cifs_dbg(FYI, "sec flags 0x%x\n", flags); 1129 1130 if (flags == 0) { 1131 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); 1132 return -EINVAL; 1133 } 1134 1135 if (flags & ~CIFSSEC_MASK) { 1136 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", 1137 flags & ~CIFSSEC_MASK); 1138 return -EINVAL; 1139 } 1140 1141 cifs_security_flags_handle_must_flags(&flags); 1142 1143 /* flags look ok - update the global security flags for cifs module */ 1144 global_secflags = flags; 1145 if (global_secflags & CIFSSEC_MUST_SIGN) { 1146 /* requiring signing implies signing is allowed */ 1147 global_secflags |= CIFSSEC_MAY_SIGN; 1148 cifs_dbg(FYI, "packet signing now required\n"); 1149 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { 1150 cifs_dbg(FYI, "packet signing disabled\n"); 1151 } 1152 /* BB should we turn on MAY flags for other MUST options? */ 1153 return count; 1154 } 1155 1156 static const struct proc_ops cifs_security_flags_proc_ops = { 1157 .proc_open = cifs_security_flags_proc_open, 1158 .proc_read = seq_read, 1159 .proc_lseek = seq_lseek, 1160 .proc_release = single_release, 1161 .proc_write = cifs_security_flags_proc_write, 1162 }; 1163 1164 /* To make it easier to debug, can help to show mount params */ 1165 static int cifs_mount_params_proc_show(struct seq_file *m, void *v) 1166 { 1167 const struct fs_parameter_spec *p; 1168 const char *type; 1169 1170 for (p = smb3_fs_parameters; p->name; p++) { 1171 /* cannot use switch with pointers... */ 1172 if (!p->type) { 1173 if (p->flags == fs_param_neg_with_no) 1174 type = "noflag"; 1175 else 1176 type = "flag"; 1177 } else if (p->type == fs_param_is_bool) 1178 type = "bool"; 1179 else if (p->type == fs_param_is_u32) 1180 type = "u32"; 1181 else if (p->type == fs_param_is_u64) 1182 type = "u64"; 1183 else if (p->type == fs_param_is_string) 1184 type = "string"; 1185 else 1186 type = "unknown"; 1187 1188 seq_printf(m, "%s:%s\n", p->name, type); 1189 } 1190 1191 return 0; 1192 } 1193 1194 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file) 1195 { 1196 return single_open(file, cifs_mount_params_proc_show, NULL); 1197 } 1198 1199 static const struct proc_ops cifs_mount_params_proc_ops = { 1200 .proc_open = cifs_mount_params_proc_open, 1201 .proc_read = seq_read, 1202 .proc_lseek = seq_lseek, 1203 .proc_release = single_release, 1204 /* No need for write for now */ 1205 /* .proc_write = cifs_mount_params_proc_write, */ 1206 }; 1207 1208 #else 1209 inline void cifs_proc_init(void) 1210 { 1211 } 1212 1213 inline void cifs_proc_clean(void) 1214 { 1215 } 1216 #endif /* PROC_FS */ 1217