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 #ifdef CONFIG_CIFS_SMB_DIRECT 366 struct smbdirect_socket_parameters *sp; 367 #endif 368 369 /* channel info will be printed as a part of sessions below */ 370 if (SERVER_IS_CHAN(server)) 371 continue; 372 373 c++; 374 seq_printf(m, "\n%d) ConnectionId: 0x%llx ", 375 c, server->conn_id); 376 377 spin_lock(&server->srv_lock); 378 if (server->hostname) 379 seq_printf(m, "Hostname: %s ", server->hostname); 380 seq_printf(m, "\nClientGUID: %pUL", server->client_guid); 381 spin_unlock(&server->srv_lock); 382 #ifdef CONFIG_CIFS_SMB_DIRECT 383 if (!server->rdma) 384 goto skip_rdma; 385 386 if (!server->smbd_conn) { 387 seq_printf(m, "\nSMBDirect transport not available"); 388 goto skip_rdma; 389 } 390 sp = &server->smbd_conn->socket.parameters; 391 392 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x " 393 "transport status: %x", 394 server->smbd_conn->protocol, 395 server->smbd_conn->socket.status); 396 seq_printf(m, "\nConn receive_credit_max: %x " 397 "send_credit_target: %x max_send_size: %x", 398 sp->recv_credit_max, 399 sp->send_credit_target, 400 sp->max_send_size); 401 seq_printf(m, "\nConn max_fragmented_recv_size: %x " 402 "max_fragmented_send_size: %x max_receive_size:%x", 403 sp->max_fragmented_recv_size, 404 sp->max_fragmented_send_size, 405 sp->max_recv_size); 406 seq_printf(m, "\nConn keep_alive_interval: %x " 407 "max_readwrite_size: %x rdma_readwrite_threshold: %x", 408 sp->keepalive_interval_msec * 1000, 409 sp->max_read_write_size, 410 server->smbd_conn->rdma_readwrite_threshold); 411 seq_printf(m, "\nDebug count_get_receive_buffer: %x " 412 "count_put_receive_buffer: %x count_send_empty: %x", 413 server->smbd_conn->count_get_receive_buffer, 414 server->smbd_conn->count_put_receive_buffer, 415 server->smbd_conn->count_send_empty); 416 seq_printf(m, "\nRead Queue count_reassembly_queue: %x " 417 "count_enqueue_reassembly_queue: %x " 418 "count_dequeue_reassembly_queue: %x " 419 "fragment_reassembly_remaining: %x " 420 "reassembly_data_length: %x " 421 "reassembly_queue_length: %x", 422 server->smbd_conn->count_reassembly_queue, 423 server->smbd_conn->count_enqueue_reassembly_queue, 424 server->smbd_conn->count_dequeue_reassembly_queue, 425 server->smbd_conn->fragment_reassembly_remaining, 426 server->smbd_conn->reassembly_data_length, 427 server->smbd_conn->reassembly_queue_length); 428 seq_printf(m, "\nCurrent Credits send_credits: %x " 429 "receive_credits: %x receive_credit_target: %x", 430 atomic_read(&server->smbd_conn->send_credits), 431 atomic_read(&server->smbd_conn->receive_credits), 432 server->smbd_conn->receive_credit_target); 433 seq_printf(m, "\nPending send_pending: %x ", 434 atomic_read(&server->smbd_conn->send_pending)); 435 seq_printf(m, "\nReceive buffers count_receive_queue: %x " 436 "count_empty_packet_queue: %x", 437 server->smbd_conn->count_receive_queue, 438 server->smbd_conn->count_empty_packet_queue); 439 seq_printf(m, "\nMR responder_resources: %x " 440 "max_frmr_depth: %x mr_type: %x", 441 server->smbd_conn->responder_resources, 442 server->smbd_conn->max_frmr_depth, 443 server->smbd_conn->mr_type); 444 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x", 445 atomic_read(&server->smbd_conn->mr_ready_count), 446 atomic_read(&server->smbd_conn->mr_used_count)); 447 skip_rdma: 448 #endif 449 seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x", 450 server->credits, 451 server->echo_credits, 452 server->oplock_credits, 453 server->dialect); 454 if (server->sign) 455 seq_printf(m, " signed"); 456 if (server->posix_ext_supported) 457 seq_printf(m, " posix"); 458 if (server->nosharesock) 459 seq_printf(m, " nosharesock"); 460 461 seq_printf(m, "\nServer capabilities: 0x%x", server->capabilities); 462 463 if (server->rdma) 464 seq_printf(m, "\nRDMA "); 465 seq_printf(m, "\nTCP status: %d Instance: %d" 466 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d", 467 server->tcpStatus, 468 server->reconnect_instance, 469 server->srv_count, 470 server->sec_mode, in_flight(server)); 471 #ifdef CONFIG_NET_NS 472 if (server->net) 473 seq_printf(m, " Net namespace: %u ", server->net->ns.inum); 474 #endif /* NET_NS */ 475 476 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d", 477 atomic_read(&server->in_send), 478 atomic_read(&server->num_waiters)); 479 480 if (server->leaf_fullpath) { 481 seq_printf(m, "\nDFS leaf full path: %s", 482 server->leaf_fullpath); 483 } 484 485 seq_puts(m, "\nCompression: "); 486 if (!IS_ENABLED(CONFIG_CIFS_COMPRESSION)) 487 seq_puts(m, "no built-in support"); 488 else if (!server->compression.requested) 489 seq_puts(m, "disabled on mount"); 490 else if (server->compression.enabled) 491 seq_printf(m, "enabled (%s)", compression_alg_str(server->compression.alg)); 492 else 493 seq_puts(m, "disabled (not supported by this server)"); 494 495 seq_printf(m, "\n\n\tSessions: "); 496 i = 0; 497 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 498 spin_lock(&ses->ses_lock); 499 if (ses->ses_status == SES_EXITING) { 500 spin_unlock(&ses->ses_lock); 501 continue; 502 } 503 i++; 504 if ((ses->serverDomain == NULL) || 505 (ses->serverOS == NULL) || 506 (ses->serverNOS == NULL)) { 507 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ", 508 i, ses->ip_addr, ses->ses_count, 509 ses->capabilities, ses->ses_status); 510 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) 511 seq_printf(m, "Guest "); 512 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) 513 seq_printf(m, "Anonymous "); 514 } else { 515 seq_printf(m, 516 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s " 517 "\n\tNOS: %s\tCapability: 0x%x" 518 "\n\tSMB session status: %d ", 519 i, ses->ip_addr, ses->serverDomain, 520 ses->ses_count, ses->serverOS, ses->serverNOS, 521 ses->capabilities, ses->ses_status); 522 } 523 if (ses->expired_pwd) 524 seq_puts(m, "password no longer valid "); 525 spin_unlock(&ses->ses_lock); 526 527 seq_printf(m, "\n\tSecurity type: %s ", 528 get_security_type_str(server->ops->select_sectype(server, ses->sectype))); 529 530 /* dump session id helpful for use with network trace */ 531 seq_printf(m, " SessionId: 0x%llx", ses->Suid); 532 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) { 533 seq_puts(m, " encrypted"); 534 /* can help in debugging to show encryption type */ 535 if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM) 536 seq_puts(m, "(gcm256)"); 537 } 538 if (ses->sign) 539 seq_puts(m, " signed"); 540 541 seq_printf(m, "\n\tUser: %d Cred User: %d", 542 from_kuid(&init_user_ns, ses->linux_uid), 543 from_kuid(&init_user_ns, ses->cred_uid)); 544 545 if (ses->dfs_root_ses) { 546 seq_printf(m, "\n\tDFS root session id: 0x%llx", 547 ses->dfs_root_ses->Suid); 548 } 549 550 spin_lock(&ses->chan_lock); 551 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0)) 552 seq_puts(m, "\tPrimary channel: DISCONNECTED "); 553 if (CIFS_CHAN_IN_RECONNECT(ses, 0)) 554 seq_puts(m, "\t[RECONNECTING] "); 555 556 if (ses->chan_count > 1) { 557 seq_printf(m, "\n\n\tExtra Channels: %zu ", 558 ses->chan_count-1); 559 for (j = 1; j < ses->chan_count; j++) { 560 cifs_dump_channel(m, j, &ses->chans[j]); 561 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j)) 562 seq_puts(m, "\tDISCONNECTED "); 563 if (CIFS_CHAN_IN_RECONNECT(ses, j)) 564 seq_puts(m, "\t[RECONNECTING] "); 565 } 566 } 567 spin_unlock(&ses->chan_lock); 568 569 seq_puts(m, "\n\n\tShares: "); 570 j = 0; 571 572 seq_printf(m, "\n\t%d) IPC: ", j); 573 if (ses->tcon_ipc) 574 cifs_debug_tcon(m, ses->tcon_ipc); 575 else 576 seq_puts(m, "none\n"); 577 578 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 579 ++j; 580 seq_printf(m, "\n\t%d) ", j); 581 cifs_debug_tcon(m, tcon); 582 } 583 584 spin_lock(&ses->iface_lock); 585 if (ses->iface_count) 586 seq_printf(m, "\n\n\tServer interfaces: %zu" 587 "\tLast updated: %lu seconds ago", 588 ses->iface_count, 589 (jiffies - ses->iface_last_update) / HZ); 590 591 last_iface = list_last_entry(&ses->iface_list, 592 struct cifs_server_iface, 593 iface_head); 594 iface_min_speed = last_iface->speed; 595 596 j = 0; 597 list_for_each_entry(iface, &ses->iface_list, 598 iface_head) { 599 seq_printf(m, "\n\t%d)", ++j); 600 cifs_dump_iface(m, iface); 601 602 iface_weight = iface->speed / iface_min_speed; 603 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)" 604 "\n\t\tAllocated channels: %u\n", 605 iface->weight_fulfilled, 606 iface_weight, 607 iface->num_channels); 608 609 if (is_ses_using_iface(ses, iface)) 610 seq_puts(m, "\t\t[CONNECTED]\n"); 611 } 612 spin_unlock(&ses->iface_lock); 613 614 seq_puts(m, "\n\n\tMIDs: "); 615 spin_lock(&ses->chan_lock); 616 for (j = 0; j < ses->chan_count; j++) { 617 chan_server = ses->chans[j].server; 618 if (!chan_server) 619 continue; 620 621 if (list_empty(&chan_server->pending_mid_q)) 622 continue; 623 624 seq_printf(m, "\n\tServer ConnectionId: 0x%llx", 625 chan_server->conn_id); 626 spin_lock(&chan_server->mid_lock); 627 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) { 628 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu", 629 mid_entry->mid_state, 630 le16_to_cpu(mid_entry->command), 631 mid_entry->pid, 632 mid_entry->callback_data, 633 mid_entry->mid); 634 } 635 spin_unlock(&chan_server->mid_lock); 636 } 637 spin_unlock(&ses->chan_lock); 638 seq_puts(m, "\n--\n"); 639 } 640 if (i == 0) 641 seq_printf(m, "\n\t\t[NONE]"); 642 } 643 if (c == 0) 644 seq_printf(m, "\n\t[NONE]"); 645 646 spin_unlock(&cifs_tcp_ses_lock); 647 seq_putc(m, '\n'); 648 cifs_swn_dump(m); 649 650 /* BB add code to dump additional info such as TCP session info now */ 651 return 0; 652 } 653 654 static ssize_t cifs_stats_proc_write(struct file *file, 655 const char __user *buffer, size_t count, loff_t *ppos) 656 { 657 bool bv; 658 int rc; 659 struct TCP_Server_Info *server; 660 struct cifs_ses *ses; 661 struct cifs_tcon *tcon; 662 663 rc = kstrtobool_from_user(buffer, count, &bv); 664 if (rc == 0) { 665 #ifdef CONFIG_CIFS_STATS2 666 int i; 667 668 atomic_set(&total_buf_alloc_count, 0); 669 atomic_set(&total_small_buf_alloc_count, 0); 670 #endif /* CONFIG_CIFS_STATS2 */ 671 atomic_set(&tcpSesReconnectCount, 0); 672 atomic_set(&tconInfoReconnectCount, 0); 673 674 spin_lock(&GlobalMid_Lock); 675 GlobalMaxActiveXid = 0; 676 GlobalCurrentXid = 0; 677 spin_unlock(&GlobalMid_Lock); 678 spin_lock(&cifs_tcp_ses_lock); 679 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 680 server->max_in_flight = 0; 681 #ifdef CONFIG_CIFS_STATS2 682 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { 683 atomic_set(&server->num_cmds[i], 0); 684 atomic_set(&server->smb2slowcmd[i], 0); 685 server->time_per_cmd[i] = 0; 686 server->slowest_cmd[i] = 0; 687 server->fastest_cmd[0] = 0; 688 } 689 #endif /* CONFIG_CIFS_STATS2 */ 690 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 691 if (cifs_ses_exiting(ses)) 692 continue; 693 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 694 atomic_set(&tcon->num_smbs_sent, 0); 695 spin_lock(&tcon->stat_lock); 696 tcon->bytes_read = 0; 697 tcon->bytes_written = 0; 698 tcon->stats_from_time = ktime_get_real_seconds(); 699 spin_unlock(&tcon->stat_lock); 700 if (server->ops->clear_stats) 701 server->ops->clear_stats(tcon); 702 } 703 } 704 } 705 spin_unlock(&cifs_tcp_ses_lock); 706 } else { 707 return rc; 708 } 709 710 return count; 711 } 712 713 static int cifs_stats_proc_show(struct seq_file *m, void *v) 714 { 715 int i; 716 #ifdef CONFIG_CIFS_STATS2 717 int j; 718 #endif /* STATS2 */ 719 struct TCP_Server_Info *server; 720 struct cifs_ses *ses; 721 struct cifs_tcon *tcon; 722 723 seq_printf(m, "Resources in use\nCIFS Session: %d\n", 724 sesInfoAllocCount.counter); 725 seq_printf(m, "Share (unique mount targets): %d\n", 726 tconInfoAllocCount.counter); 727 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", 728 buf_alloc_count.counter, 729 cifs_min_rcv + tcpSesAllocCount.counter); 730 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", 731 small_buf_alloc_count.counter, cifs_min_small); 732 #ifdef CONFIG_CIFS_STATS2 733 seq_printf(m, "Total Large %d Small %d Allocations\n", 734 atomic_read(&total_buf_alloc_count), 735 atomic_read(&total_small_buf_alloc_count)); 736 #endif /* CONFIG_CIFS_STATS2 */ 737 738 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count)); 739 seq_printf(m, 740 "\n%d session %d share reconnects\n", 741 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); 742 743 seq_printf(m, 744 "Total vfs operations: %d maximum at one time: %d\n", 745 GlobalCurrentXid, GlobalMaxActiveXid); 746 747 i = 0; 748 spin_lock(&cifs_tcp_ses_lock); 749 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 750 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight); 751 #ifdef CONFIG_CIFS_STATS2 752 seq_puts(m, "\nTotal time spent processing by command. Time "); 753 seq_printf(m, "units are jiffies (%d per second)\n", HZ); 754 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n"); 755 seq_puts(m, " --------\t------\t----------\t-------\t-------\n"); 756 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 757 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j, 758 atomic_read(&server->num_cmds[j]), 759 server->time_per_cmd[j], 760 server->fastest_cmd[j], 761 server->slowest_cmd[j]); 762 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 763 if (atomic_read(&server->smb2slowcmd[j])) { 764 spin_lock(&server->srv_lock); 765 seq_printf(m, " %d slow responses from %s for command %d\n", 766 atomic_read(&server->smb2slowcmd[j]), 767 server->hostname, j); 768 spin_unlock(&server->srv_lock); 769 } 770 #endif /* STATS2 */ 771 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 772 if (cifs_ses_exiting(ses)) 773 continue; 774 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 775 i++; 776 seq_printf(m, "\n%d) %s", i, tcon->tree_name); 777 if (tcon->need_reconnect) 778 seq_puts(m, "\tDISCONNECTED "); 779 seq_printf(m, "\nSMBs: %d since %ptTs UTC", 780 atomic_read(&tcon->num_smbs_sent), 781 &tcon->stats_from_time); 782 if (server->ops->print_stats) 783 server->ops->print_stats(m, tcon); 784 } 785 } 786 } 787 spin_unlock(&cifs_tcp_ses_lock); 788 789 seq_putc(m, '\n'); 790 return 0; 791 } 792 793 static int cifs_stats_proc_open(struct inode *inode, struct file *file) 794 { 795 return single_open(file, cifs_stats_proc_show, NULL); 796 } 797 798 static const struct proc_ops cifs_stats_proc_ops = { 799 .proc_open = cifs_stats_proc_open, 800 .proc_read = seq_read, 801 .proc_lseek = seq_lseek, 802 .proc_release = single_release, 803 .proc_write = cifs_stats_proc_write, 804 }; 805 806 #ifdef CONFIG_CIFS_SMB_DIRECT 807 #define PROC_FILE_DEFINE(name) \ 808 static ssize_t name##_write(struct file *file, const char __user *buffer, \ 809 size_t count, loff_t *ppos) \ 810 { \ 811 int rc; \ 812 rc = kstrtoint_from_user(buffer, count, 10, &name); \ 813 if (rc) \ 814 return rc; \ 815 return count; \ 816 } \ 817 static int name##_proc_show(struct seq_file *m, void *v) \ 818 { \ 819 seq_printf(m, "%d\n", name); \ 820 return 0; \ 821 } \ 822 static int name##_open(struct inode *inode, struct file *file) \ 823 { \ 824 return single_open(file, name##_proc_show, NULL); \ 825 } \ 826 \ 827 static const struct proc_ops cifs_##name##_proc_fops = { \ 828 .proc_open = name##_open, \ 829 .proc_read = seq_read, \ 830 .proc_lseek = seq_lseek, \ 831 .proc_release = single_release, \ 832 .proc_write = name##_write, \ 833 } 834 835 PROC_FILE_DEFINE(rdma_readwrite_threshold); 836 PROC_FILE_DEFINE(smbd_max_frmr_depth); 837 PROC_FILE_DEFINE(smbd_keep_alive_interval); 838 PROC_FILE_DEFINE(smbd_max_receive_size); 839 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size); 840 PROC_FILE_DEFINE(smbd_max_send_size); 841 PROC_FILE_DEFINE(smbd_send_credit_target); 842 PROC_FILE_DEFINE(smbd_receive_credit_max); 843 #endif 844 845 static struct proc_dir_entry *proc_fs_cifs; 846 static const struct proc_ops cifsFYI_proc_ops; 847 static const struct proc_ops cifs_lookup_cache_proc_ops; 848 static const struct proc_ops traceSMB_proc_ops; 849 static const struct proc_ops cifs_security_flags_proc_ops; 850 static const struct proc_ops cifs_linux_ext_proc_ops; 851 static const struct proc_ops cifs_mount_params_proc_ops; 852 853 void 854 cifs_proc_init(void) 855 { 856 proc_fs_cifs = proc_mkdir("fs/cifs", NULL); 857 if (proc_fs_cifs == NULL) 858 return; 859 860 proc_create_single("DebugData", 0, proc_fs_cifs, 861 cifs_debug_data_proc_show); 862 863 proc_create_single("open_files", 0400, proc_fs_cifs, 864 cifs_debug_files_proc_show); 865 866 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops); 867 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops); 868 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops); 869 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs, 870 &cifs_linux_ext_proc_ops); 871 proc_create("SecurityFlags", 0644, proc_fs_cifs, 872 &cifs_security_flags_proc_ops); 873 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs, 874 &cifs_lookup_cache_proc_ops); 875 876 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops); 877 878 #ifdef CONFIG_CIFS_DFS_UPCALL 879 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops); 880 #endif 881 882 #ifdef CONFIG_CIFS_SMB_DIRECT 883 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs, 884 &cifs_rdma_readwrite_threshold_proc_fops); 885 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs, 886 &cifs_smbd_max_frmr_depth_proc_fops); 887 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs, 888 &cifs_smbd_keep_alive_interval_proc_fops); 889 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs, 890 &cifs_smbd_max_receive_size_proc_fops); 891 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs, 892 &cifs_smbd_max_fragmented_recv_size_proc_fops); 893 proc_create("smbd_max_send_size", 0644, proc_fs_cifs, 894 &cifs_smbd_max_send_size_proc_fops); 895 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs, 896 &cifs_smbd_send_credit_target_proc_fops); 897 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs, 898 &cifs_smbd_receive_credit_max_proc_fops); 899 #endif 900 } 901 902 void 903 cifs_proc_clean(void) 904 { 905 if (proc_fs_cifs == NULL) 906 return; 907 908 remove_proc_entry("DebugData", proc_fs_cifs); 909 remove_proc_entry("open_files", proc_fs_cifs); 910 remove_proc_entry("cifsFYI", proc_fs_cifs); 911 remove_proc_entry("traceSMB", proc_fs_cifs); 912 remove_proc_entry("Stats", proc_fs_cifs); 913 remove_proc_entry("SecurityFlags", proc_fs_cifs); 914 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); 915 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); 916 remove_proc_entry("mount_params", proc_fs_cifs); 917 918 #ifdef CONFIG_CIFS_DFS_UPCALL 919 remove_proc_entry("dfscache", proc_fs_cifs); 920 #endif 921 #ifdef CONFIG_CIFS_SMB_DIRECT 922 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs); 923 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs); 924 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs); 925 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs); 926 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs); 927 remove_proc_entry("smbd_max_send_size", proc_fs_cifs); 928 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs); 929 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs); 930 #endif 931 remove_proc_entry("fs/cifs", NULL); 932 } 933 934 static int cifsFYI_proc_show(struct seq_file *m, void *v) 935 { 936 seq_printf(m, "%d\n", cifsFYI); 937 return 0; 938 } 939 940 static int cifsFYI_proc_open(struct inode *inode, struct file *file) 941 { 942 return single_open(file, cifsFYI_proc_show, NULL); 943 } 944 945 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, 946 size_t count, loff_t *ppos) 947 { 948 char c[2] = { '\0' }; 949 bool bv; 950 int rc; 951 952 rc = get_user(c[0], buffer); 953 if (rc) 954 return rc; 955 if (kstrtobool(c, &bv) == 0) 956 cifsFYI = bv; 957 else if ((c[0] > '1') && (c[0] <= '9')) 958 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ 959 else 960 return -EINVAL; 961 962 return count; 963 } 964 965 static const struct proc_ops cifsFYI_proc_ops = { 966 .proc_open = cifsFYI_proc_open, 967 .proc_read = seq_read, 968 .proc_lseek = seq_lseek, 969 .proc_release = single_release, 970 .proc_write = cifsFYI_proc_write, 971 }; 972 973 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) 974 { 975 seq_printf(m, "%d\n", linuxExtEnabled); 976 return 0; 977 } 978 979 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) 980 { 981 return single_open(file, cifs_linux_ext_proc_show, NULL); 982 } 983 984 static ssize_t cifs_linux_ext_proc_write(struct file *file, 985 const char __user *buffer, size_t count, loff_t *ppos) 986 { 987 int rc; 988 989 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); 990 if (rc) 991 return rc; 992 993 return count; 994 } 995 996 static const struct proc_ops cifs_linux_ext_proc_ops = { 997 .proc_open = cifs_linux_ext_proc_open, 998 .proc_read = seq_read, 999 .proc_lseek = seq_lseek, 1000 .proc_release = single_release, 1001 .proc_write = cifs_linux_ext_proc_write, 1002 }; 1003 1004 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) 1005 { 1006 seq_printf(m, "%d\n", lookupCacheEnabled); 1007 return 0; 1008 } 1009 1010 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) 1011 { 1012 return single_open(file, cifs_lookup_cache_proc_show, NULL); 1013 } 1014 1015 static ssize_t cifs_lookup_cache_proc_write(struct file *file, 1016 const char __user *buffer, size_t count, loff_t *ppos) 1017 { 1018 int rc; 1019 1020 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled); 1021 if (rc) 1022 return rc; 1023 1024 return count; 1025 } 1026 1027 static const struct proc_ops cifs_lookup_cache_proc_ops = { 1028 .proc_open = cifs_lookup_cache_proc_open, 1029 .proc_read = seq_read, 1030 .proc_lseek = seq_lseek, 1031 .proc_release = single_release, 1032 .proc_write = cifs_lookup_cache_proc_write, 1033 }; 1034 1035 static int traceSMB_proc_show(struct seq_file *m, void *v) 1036 { 1037 seq_printf(m, "%d\n", traceSMB); 1038 return 0; 1039 } 1040 1041 static int traceSMB_proc_open(struct inode *inode, struct file *file) 1042 { 1043 return single_open(file, traceSMB_proc_show, NULL); 1044 } 1045 1046 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, 1047 size_t count, loff_t *ppos) 1048 { 1049 int rc; 1050 1051 rc = kstrtobool_from_user(buffer, count, &traceSMB); 1052 if (rc) 1053 return rc; 1054 1055 return count; 1056 } 1057 1058 static const struct proc_ops traceSMB_proc_ops = { 1059 .proc_open = traceSMB_proc_open, 1060 .proc_read = seq_read, 1061 .proc_lseek = seq_lseek, 1062 .proc_release = single_release, 1063 .proc_write = traceSMB_proc_write, 1064 }; 1065 1066 static int cifs_security_flags_proc_show(struct seq_file *m, void *v) 1067 { 1068 seq_printf(m, "0x%x\n", global_secflags); 1069 return 0; 1070 } 1071 1072 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) 1073 { 1074 return single_open(file, cifs_security_flags_proc_show, NULL); 1075 } 1076 1077 /* 1078 * Ensure that if someone sets a MUST flag, that we disable all other MAY 1079 * flags except for the ones corresponding to the given MUST flag. If there are 1080 * multiple MUST flags, then try to prefer more secure ones. 1081 */ 1082 static void 1083 cifs_security_flags_handle_must_flags(unsigned int *flags) 1084 { 1085 unsigned int signflags = *flags & (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL); 1086 1087 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) 1088 *flags = CIFSSEC_MUST_KRB5; 1089 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) 1090 *flags = CIFSSEC_MUST_NTLMSSP; 1091 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) 1092 *flags = CIFSSEC_MUST_NTLMV2; 1093 1094 *flags |= signflags; 1095 } 1096 1097 static ssize_t cifs_security_flags_proc_write(struct file *file, 1098 const char __user *buffer, size_t count, loff_t *ppos) 1099 { 1100 int rc; 1101 unsigned int flags; 1102 char flags_string[12]; 1103 bool bv; 1104 1105 if ((count < 1) || (count > 11)) 1106 return -EINVAL; 1107 1108 memset(flags_string, 0, sizeof(flags_string)); 1109 1110 if (copy_from_user(flags_string, buffer, count)) 1111 return -EFAULT; 1112 1113 if (count < 3) { 1114 /* single char or single char followed by null */ 1115 if (kstrtobool(flags_string, &bv) == 0) { 1116 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; 1117 return count; 1118 } else if (!isdigit(flags_string[0])) { 1119 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1120 flags_string); 1121 return -EINVAL; 1122 } 1123 } 1124 1125 /* else we have a number */ 1126 rc = kstrtouint(flags_string, 0, &flags); 1127 if (rc) { 1128 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1129 flags_string); 1130 return rc; 1131 } 1132 1133 cifs_dbg(FYI, "sec flags 0x%x\n", flags); 1134 1135 if (flags == 0) { 1136 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); 1137 return -EINVAL; 1138 } 1139 1140 if (flags & ~CIFSSEC_MASK) { 1141 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", 1142 flags & ~CIFSSEC_MASK); 1143 return -EINVAL; 1144 } 1145 1146 cifs_security_flags_handle_must_flags(&flags); 1147 1148 /* flags look ok - update the global security flags for cifs module */ 1149 global_secflags = flags; 1150 if (global_secflags & CIFSSEC_MUST_SIGN) { 1151 /* requiring signing implies signing is allowed */ 1152 global_secflags |= CIFSSEC_MAY_SIGN; 1153 cifs_dbg(FYI, "packet signing now required\n"); 1154 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { 1155 cifs_dbg(FYI, "packet signing disabled\n"); 1156 } 1157 /* BB should we turn on MAY flags for other MUST options? */ 1158 return count; 1159 } 1160 1161 static const struct proc_ops cifs_security_flags_proc_ops = { 1162 .proc_open = cifs_security_flags_proc_open, 1163 .proc_read = seq_read, 1164 .proc_lseek = seq_lseek, 1165 .proc_release = single_release, 1166 .proc_write = cifs_security_flags_proc_write, 1167 }; 1168 1169 /* To make it easier to debug, can help to show mount params */ 1170 static int cifs_mount_params_proc_show(struct seq_file *m, void *v) 1171 { 1172 const struct fs_parameter_spec *p; 1173 const char *type; 1174 1175 for (p = smb3_fs_parameters; p->name; p++) { 1176 /* cannot use switch with pointers... */ 1177 if (!p->type) { 1178 if (p->flags == fs_param_neg_with_no) 1179 type = "noflag"; 1180 else 1181 type = "flag"; 1182 } else if (p->type == fs_param_is_bool) 1183 type = "bool"; 1184 else if (p->type == fs_param_is_u32) 1185 type = "u32"; 1186 else if (p->type == fs_param_is_u64) 1187 type = "u64"; 1188 else if (p->type == fs_param_is_string) 1189 type = "string"; 1190 else 1191 type = "unknown"; 1192 1193 seq_printf(m, "%s:%s\n", p->name, type); 1194 } 1195 1196 return 0; 1197 } 1198 1199 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file) 1200 { 1201 return single_open(file, cifs_mount_params_proc_show, NULL); 1202 } 1203 1204 static const struct proc_ops cifs_mount_params_proc_ops = { 1205 .proc_open = cifs_mount_params_proc_open, 1206 .proc_read = seq_read, 1207 .proc_lseek = seq_lseek, 1208 .proc_release = single_release, 1209 /* No need for write for now */ 1210 /* .proc_write = cifs_mount_params_proc_write, */ 1211 }; 1212 1213 #else 1214 inline void cifs_proc_init(void) 1215 { 1216 } 1217 1218 inline void cifs_proc_clean(void) 1219 { 1220 } 1221 #endif /* PROC_FS */ 1222