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 int cifs_debug_data_proc_show(struct seq_file *m, void *v) 284 { 285 struct mid_q_entry *mid_entry; 286 struct TCP_Server_Info *server; 287 struct TCP_Server_Info *chan_server; 288 struct cifs_ses *ses; 289 struct cifs_tcon *tcon; 290 struct cifs_server_iface *iface; 291 size_t iface_weight = 0, iface_min_speed = 0; 292 struct cifs_server_iface *last_iface = NULL; 293 int c, i, j; 294 295 seq_puts(m, 296 "Display Internal CIFS Data Structures for Debugging\n" 297 "---------------------------------------------------\n"); 298 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); 299 seq_printf(m, "Features:"); 300 #ifdef CONFIG_CIFS_DFS_UPCALL 301 seq_printf(m, " DFS"); 302 #endif 303 #ifdef CONFIG_CIFS_FSCACHE 304 seq_printf(m, ",FSCACHE"); 305 #endif 306 #ifdef CONFIG_CIFS_SMB_DIRECT 307 seq_printf(m, ",SMB_DIRECT"); 308 #endif 309 #ifdef CONFIG_CIFS_STATS2 310 seq_printf(m, ",STATS2"); 311 #else 312 seq_printf(m, ",STATS"); 313 #endif 314 #ifdef CONFIG_CIFS_DEBUG2 315 seq_printf(m, ",DEBUG2"); 316 #elif defined(CONFIG_CIFS_DEBUG) 317 seq_printf(m, ",DEBUG"); 318 #endif 319 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 320 seq_printf(m, ",ALLOW_INSECURE_LEGACY"); 321 #endif 322 #ifdef CONFIG_CIFS_POSIX 323 seq_printf(m, ",CIFS_POSIX"); 324 #endif 325 #ifdef CONFIG_CIFS_UPCALL 326 seq_printf(m, ",UPCALL(SPNEGO)"); 327 #endif 328 #ifdef CONFIG_CIFS_XATTR 329 seq_printf(m, ",XATTR"); 330 #endif 331 seq_printf(m, ",ACL"); 332 #ifdef CONFIG_CIFS_SWN_UPCALL 333 seq_puts(m, ",WITNESS"); 334 #endif 335 seq_putc(m, '\n'); 336 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize); 337 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); 338 339 seq_printf(m, "\nServers: "); 340 341 c = 0; 342 spin_lock(&cifs_tcp_ses_lock); 343 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 344 /* channel info will be printed as a part of sessions below */ 345 if (SERVER_IS_CHAN(server)) 346 continue; 347 348 c++; 349 seq_printf(m, "\n%d) ConnectionId: 0x%llx ", 350 c, server->conn_id); 351 352 spin_lock(&server->srv_lock); 353 if (server->hostname) 354 seq_printf(m, "Hostname: %s ", server->hostname); 355 seq_printf(m, "\nClientGUID: %pUL", server->client_guid); 356 spin_unlock(&server->srv_lock); 357 #ifdef CONFIG_CIFS_SMB_DIRECT 358 if (!server->rdma) 359 goto skip_rdma; 360 361 if (!server->smbd_conn) { 362 seq_printf(m, "\nSMBDirect transport not available"); 363 goto skip_rdma; 364 } 365 366 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x " 367 "transport status: %x", 368 server->smbd_conn->protocol, 369 server->smbd_conn->transport_status); 370 seq_printf(m, "\nConn receive_credit_max: %x " 371 "send_credit_target: %x max_send_size: %x", 372 server->smbd_conn->receive_credit_max, 373 server->smbd_conn->send_credit_target, 374 server->smbd_conn->max_send_size); 375 seq_printf(m, "\nConn max_fragmented_recv_size: %x " 376 "max_fragmented_send_size: %x max_receive_size:%x", 377 server->smbd_conn->max_fragmented_recv_size, 378 server->smbd_conn->max_fragmented_send_size, 379 server->smbd_conn->max_receive_size); 380 seq_printf(m, "\nConn keep_alive_interval: %x " 381 "max_readwrite_size: %x rdma_readwrite_threshold: %x", 382 server->smbd_conn->keep_alive_interval, 383 server->smbd_conn->max_readwrite_size, 384 server->smbd_conn->rdma_readwrite_threshold); 385 seq_printf(m, "\nDebug count_get_receive_buffer: %x " 386 "count_put_receive_buffer: %x count_send_empty: %x", 387 server->smbd_conn->count_get_receive_buffer, 388 server->smbd_conn->count_put_receive_buffer, 389 server->smbd_conn->count_send_empty); 390 seq_printf(m, "\nRead Queue count_reassembly_queue: %x " 391 "count_enqueue_reassembly_queue: %x " 392 "count_dequeue_reassembly_queue: %x " 393 "fragment_reassembly_remaining: %x " 394 "reassembly_data_length: %x " 395 "reassembly_queue_length: %x", 396 server->smbd_conn->count_reassembly_queue, 397 server->smbd_conn->count_enqueue_reassembly_queue, 398 server->smbd_conn->count_dequeue_reassembly_queue, 399 server->smbd_conn->fragment_reassembly_remaining, 400 server->smbd_conn->reassembly_data_length, 401 server->smbd_conn->reassembly_queue_length); 402 seq_printf(m, "\nCurrent Credits send_credits: %x " 403 "receive_credits: %x receive_credit_target: %x", 404 atomic_read(&server->smbd_conn->send_credits), 405 atomic_read(&server->smbd_conn->receive_credits), 406 server->smbd_conn->receive_credit_target); 407 seq_printf(m, "\nPending send_pending: %x ", 408 atomic_read(&server->smbd_conn->send_pending)); 409 seq_printf(m, "\nReceive buffers count_receive_queue: %x " 410 "count_empty_packet_queue: %x", 411 server->smbd_conn->count_receive_queue, 412 server->smbd_conn->count_empty_packet_queue); 413 seq_printf(m, "\nMR responder_resources: %x " 414 "max_frmr_depth: %x mr_type: %x", 415 server->smbd_conn->responder_resources, 416 server->smbd_conn->max_frmr_depth, 417 server->smbd_conn->mr_type); 418 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x", 419 atomic_read(&server->smbd_conn->mr_ready_count), 420 atomic_read(&server->smbd_conn->mr_used_count)); 421 skip_rdma: 422 #endif 423 seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x", 424 server->credits, 425 server->echo_credits, 426 server->oplock_credits, 427 server->dialect); 428 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1) 429 seq_printf(m, " COMPRESS_LZNT1"); 430 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77) 431 seq_printf(m, " COMPRESS_LZ77"); 432 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF) 433 seq_printf(m, " COMPRESS_LZ77_HUFF"); 434 if (server->sign) 435 seq_printf(m, " signed"); 436 if (server->posix_ext_supported) 437 seq_printf(m, " posix"); 438 if (server->nosharesock) 439 seq_printf(m, " nosharesock"); 440 441 if (server->rdma) 442 seq_printf(m, "\nRDMA "); 443 seq_printf(m, "\nTCP status: %d Instance: %d" 444 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d", 445 server->tcpStatus, 446 server->reconnect_instance, 447 server->srv_count, 448 server->sec_mode, in_flight(server)); 449 #ifdef CONFIG_NET_NS 450 if (server->net) 451 seq_printf(m, " Net namespace: %u ", server->net->ns.inum); 452 #endif /* NET_NS */ 453 454 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d", 455 atomic_read(&server->in_send), 456 atomic_read(&server->num_waiters)); 457 458 if (server->leaf_fullpath) { 459 seq_printf(m, "\nDFS leaf full path: %s", 460 server->leaf_fullpath); 461 } 462 463 seq_printf(m, "\n\n\tSessions: "); 464 i = 0; 465 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 466 spin_lock(&ses->ses_lock); 467 if (ses->ses_status == SES_EXITING) { 468 spin_unlock(&ses->ses_lock); 469 continue; 470 } 471 i++; 472 if ((ses->serverDomain == NULL) || 473 (ses->serverOS == NULL) || 474 (ses->serverNOS == NULL)) { 475 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ", 476 i, ses->ip_addr, ses->ses_count, 477 ses->capabilities, ses->ses_status); 478 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) 479 seq_printf(m, "Guest "); 480 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) 481 seq_printf(m, "Anonymous "); 482 } else { 483 seq_printf(m, 484 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s " 485 "\n\tNOS: %s\tCapability: 0x%x" 486 "\n\tSMB session status: %d ", 487 i, ses->ip_addr, ses->serverDomain, 488 ses->ses_count, ses->serverOS, ses->serverNOS, 489 ses->capabilities, ses->ses_status); 490 } 491 if (ses->expired_pwd) 492 seq_puts(m, "password no longer valid "); 493 spin_unlock(&ses->ses_lock); 494 495 seq_printf(m, "\n\tSecurity type: %s ", 496 get_security_type_str(server->ops->select_sectype(server, ses->sectype))); 497 498 /* dump session id helpful for use with network trace */ 499 seq_printf(m, " SessionId: 0x%llx", ses->Suid); 500 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) { 501 seq_puts(m, " encrypted"); 502 /* can help in debugging to show encryption type */ 503 if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM) 504 seq_puts(m, "(gcm256)"); 505 } 506 if (ses->sign) 507 seq_puts(m, " signed"); 508 509 seq_printf(m, "\n\tUser: %d Cred User: %d", 510 from_kuid(&init_user_ns, ses->linux_uid), 511 from_kuid(&init_user_ns, ses->cred_uid)); 512 513 if (ses->dfs_root_ses) { 514 seq_printf(m, "\n\tDFS root session id: 0x%llx", 515 ses->dfs_root_ses->Suid); 516 } 517 518 spin_lock(&ses->chan_lock); 519 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0)) 520 seq_puts(m, "\tPrimary channel: DISCONNECTED "); 521 if (CIFS_CHAN_IN_RECONNECT(ses, 0)) 522 seq_puts(m, "\t[RECONNECTING] "); 523 524 if (ses->chan_count > 1) { 525 seq_printf(m, "\n\n\tExtra Channels: %zu ", 526 ses->chan_count-1); 527 for (j = 1; j < ses->chan_count; j++) { 528 cifs_dump_channel(m, j, &ses->chans[j]); 529 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j)) 530 seq_puts(m, "\tDISCONNECTED "); 531 if (CIFS_CHAN_IN_RECONNECT(ses, j)) 532 seq_puts(m, "\t[RECONNECTING] "); 533 } 534 } 535 spin_unlock(&ses->chan_lock); 536 537 seq_puts(m, "\n\n\tShares: "); 538 j = 0; 539 540 seq_printf(m, "\n\t%d) IPC: ", j); 541 if (ses->tcon_ipc) 542 cifs_debug_tcon(m, ses->tcon_ipc); 543 else 544 seq_puts(m, "none\n"); 545 546 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 547 ++j; 548 seq_printf(m, "\n\t%d) ", j); 549 cifs_debug_tcon(m, tcon); 550 } 551 552 spin_lock(&ses->iface_lock); 553 if (ses->iface_count) 554 seq_printf(m, "\n\n\tServer interfaces: %zu" 555 "\tLast updated: %lu seconds ago", 556 ses->iface_count, 557 (jiffies - ses->iface_last_update) / HZ); 558 559 last_iface = list_last_entry(&ses->iface_list, 560 struct cifs_server_iface, 561 iface_head); 562 iface_min_speed = last_iface->speed; 563 564 j = 0; 565 list_for_each_entry(iface, &ses->iface_list, 566 iface_head) { 567 seq_printf(m, "\n\t%d)", ++j); 568 cifs_dump_iface(m, iface); 569 570 iface_weight = iface->speed / iface_min_speed; 571 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)" 572 "\n\t\tAllocated channels: %u\n", 573 iface->weight_fulfilled, 574 iface_weight, 575 iface->num_channels); 576 577 if (is_ses_using_iface(ses, iface)) 578 seq_puts(m, "\t\t[CONNECTED]\n"); 579 } 580 spin_unlock(&ses->iface_lock); 581 582 seq_puts(m, "\n\n\tMIDs: "); 583 spin_lock(&ses->chan_lock); 584 for (j = 0; j < ses->chan_count; j++) { 585 chan_server = ses->chans[j].server; 586 if (!chan_server) 587 continue; 588 589 if (list_empty(&chan_server->pending_mid_q)) 590 continue; 591 592 seq_printf(m, "\n\tServer ConnectionId: 0x%llx", 593 chan_server->conn_id); 594 spin_lock(&chan_server->mid_lock); 595 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) { 596 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu", 597 mid_entry->mid_state, 598 le16_to_cpu(mid_entry->command), 599 mid_entry->pid, 600 mid_entry->callback_data, 601 mid_entry->mid); 602 } 603 spin_unlock(&chan_server->mid_lock); 604 } 605 spin_unlock(&ses->chan_lock); 606 seq_puts(m, "\n--\n"); 607 } 608 if (i == 0) 609 seq_printf(m, "\n\t\t[NONE]"); 610 } 611 if (c == 0) 612 seq_printf(m, "\n\t[NONE]"); 613 614 spin_unlock(&cifs_tcp_ses_lock); 615 seq_putc(m, '\n'); 616 cifs_swn_dump(m); 617 618 /* BB add code to dump additional info such as TCP session info now */ 619 return 0; 620 } 621 622 static ssize_t cifs_stats_proc_write(struct file *file, 623 const char __user *buffer, size_t count, loff_t *ppos) 624 { 625 bool bv; 626 int rc; 627 struct TCP_Server_Info *server; 628 struct cifs_ses *ses; 629 struct cifs_tcon *tcon; 630 631 rc = kstrtobool_from_user(buffer, count, &bv); 632 if (rc == 0) { 633 #ifdef CONFIG_CIFS_STATS2 634 int i; 635 636 atomic_set(&total_buf_alloc_count, 0); 637 atomic_set(&total_small_buf_alloc_count, 0); 638 #endif /* CONFIG_CIFS_STATS2 */ 639 atomic_set(&tcpSesReconnectCount, 0); 640 atomic_set(&tconInfoReconnectCount, 0); 641 642 spin_lock(&GlobalMid_Lock); 643 GlobalMaxActiveXid = 0; 644 GlobalCurrentXid = 0; 645 spin_unlock(&GlobalMid_Lock); 646 spin_lock(&cifs_tcp_ses_lock); 647 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 648 server->max_in_flight = 0; 649 #ifdef CONFIG_CIFS_STATS2 650 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { 651 atomic_set(&server->num_cmds[i], 0); 652 atomic_set(&server->smb2slowcmd[i], 0); 653 server->time_per_cmd[i] = 0; 654 server->slowest_cmd[i] = 0; 655 server->fastest_cmd[0] = 0; 656 } 657 #endif /* CONFIG_CIFS_STATS2 */ 658 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 659 if (cifs_ses_exiting(ses)) 660 continue; 661 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 662 atomic_set(&tcon->num_smbs_sent, 0); 663 spin_lock(&tcon->stat_lock); 664 tcon->bytes_read = 0; 665 tcon->bytes_written = 0; 666 tcon->stats_from_time = ktime_get_real_seconds(); 667 spin_unlock(&tcon->stat_lock); 668 if (server->ops->clear_stats) 669 server->ops->clear_stats(tcon); 670 } 671 } 672 } 673 spin_unlock(&cifs_tcp_ses_lock); 674 } else { 675 return rc; 676 } 677 678 return count; 679 } 680 681 static int cifs_stats_proc_show(struct seq_file *m, void *v) 682 { 683 int i; 684 #ifdef CONFIG_CIFS_STATS2 685 int j; 686 #endif /* STATS2 */ 687 struct TCP_Server_Info *server; 688 struct cifs_ses *ses; 689 struct cifs_tcon *tcon; 690 691 seq_printf(m, "Resources in use\nCIFS Session: %d\n", 692 sesInfoAllocCount.counter); 693 seq_printf(m, "Share (unique mount targets): %d\n", 694 tconInfoAllocCount.counter); 695 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", 696 buf_alloc_count.counter, 697 cifs_min_rcv + tcpSesAllocCount.counter); 698 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", 699 small_buf_alloc_count.counter, cifs_min_small); 700 #ifdef CONFIG_CIFS_STATS2 701 seq_printf(m, "Total Large %d Small %d Allocations\n", 702 atomic_read(&total_buf_alloc_count), 703 atomic_read(&total_small_buf_alloc_count)); 704 #endif /* CONFIG_CIFS_STATS2 */ 705 706 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count)); 707 seq_printf(m, 708 "\n%d session %d share reconnects\n", 709 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); 710 711 seq_printf(m, 712 "Total vfs operations: %d maximum at one time: %d\n", 713 GlobalCurrentXid, GlobalMaxActiveXid); 714 715 i = 0; 716 spin_lock(&cifs_tcp_ses_lock); 717 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 718 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight); 719 #ifdef CONFIG_CIFS_STATS2 720 seq_puts(m, "\nTotal time spent processing by command. Time "); 721 seq_printf(m, "units are jiffies (%d per second)\n", HZ); 722 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n"); 723 seq_puts(m, " --------\t------\t----------\t-------\t-------\n"); 724 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 725 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j, 726 atomic_read(&server->num_cmds[j]), 727 server->time_per_cmd[j], 728 server->fastest_cmd[j], 729 server->slowest_cmd[j]); 730 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 731 if (atomic_read(&server->smb2slowcmd[j])) { 732 spin_lock(&server->srv_lock); 733 seq_printf(m, " %d slow responses from %s for command %d\n", 734 atomic_read(&server->smb2slowcmd[j]), 735 server->hostname, j); 736 spin_unlock(&server->srv_lock); 737 } 738 #endif /* STATS2 */ 739 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 740 if (cifs_ses_exiting(ses)) 741 continue; 742 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 743 i++; 744 seq_printf(m, "\n%d) %s", i, tcon->tree_name); 745 if (tcon->need_reconnect) 746 seq_puts(m, "\tDISCONNECTED "); 747 seq_printf(m, "\nSMBs: %d since %ptTs UTC", 748 atomic_read(&tcon->num_smbs_sent), 749 &tcon->stats_from_time); 750 if (server->ops->print_stats) 751 server->ops->print_stats(m, tcon); 752 } 753 } 754 } 755 spin_unlock(&cifs_tcp_ses_lock); 756 757 seq_putc(m, '\n'); 758 return 0; 759 } 760 761 static int cifs_stats_proc_open(struct inode *inode, struct file *file) 762 { 763 return single_open(file, cifs_stats_proc_show, NULL); 764 } 765 766 static const struct proc_ops cifs_stats_proc_ops = { 767 .proc_open = cifs_stats_proc_open, 768 .proc_read = seq_read, 769 .proc_lseek = seq_lseek, 770 .proc_release = single_release, 771 .proc_write = cifs_stats_proc_write, 772 }; 773 774 #ifdef CONFIG_CIFS_SMB_DIRECT 775 #define PROC_FILE_DEFINE(name) \ 776 static ssize_t name##_write(struct file *file, const char __user *buffer, \ 777 size_t count, loff_t *ppos) \ 778 { \ 779 int rc; \ 780 rc = kstrtoint_from_user(buffer, count, 10, & name); \ 781 if (rc) \ 782 return rc; \ 783 return count; \ 784 } \ 785 static int name##_proc_show(struct seq_file *m, void *v) \ 786 { \ 787 seq_printf(m, "%d\n", name ); \ 788 return 0; \ 789 } \ 790 static int name##_open(struct inode *inode, struct file *file) \ 791 { \ 792 return single_open(file, name##_proc_show, NULL); \ 793 } \ 794 \ 795 static const struct proc_ops cifs_##name##_proc_fops = { \ 796 .proc_open = name##_open, \ 797 .proc_read = seq_read, \ 798 .proc_lseek = seq_lseek, \ 799 .proc_release = single_release, \ 800 .proc_write = name##_write, \ 801 } 802 803 PROC_FILE_DEFINE(rdma_readwrite_threshold); 804 PROC_FILE_DEFINE(smbd_max_frmr_depth); 805 PROC_FILE_DEFINE(smbd_keep_alive_interval); 806 PROC_FILE_DEFINE(smbd_max_receive_size); 807 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size); 808 PROC_FILE_DEFINE(smbd_max_send_size); 809 PROC_FILE_DEFINE(smbd_send_credit_target); 810 PROC_FILE_DEFINE(smbd_receive_credit_max); 811 #endif 812 813 static struct proc_dir_entry *proc_fs_cifs; 814 static const struct proc_ops cifsFYI_proc_ops; 815 static const struct proc_ops cifs_lookup_cache_proc_ops; 816 static const struct proc_ops traceSMB_proc_ops; 817 static const struct proc_ops cifs_security_flags_proc_ops; 818 static const struct proc_ops cifs_linux_ext_proc_ops; 819 static const struct proc_ops cifs_mount_params_proc_ops; 820 821 void 822 cifs_proc_init(void) 823 { 824 proc_fs_cifs = proc_mkdir("fs/cifs", NULL); 825 if (proc_fs_cifs == NULL) 826 return; 827 828 proc_create_single("DebugData", 0, proc_fs_cifs, 829 cifs_debug_data_proc_show); 830 831 proc_create_single("open_files", 0400, proc_fs_cifs, 832 cifs_debug_files_proc_show); 833 834 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops); 835 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops); 836 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops); 837 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs, 838 &cifs_linux_ext_proc_ops); 839 proc_create("SecurityFlags", 0644, proc_fs_cifs, 840 &cifs_security_flags_proc_ops); 841 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs, 842 &cifs_lookup_cache_proc_ops); 843 844 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops); 845 846 #ifdef CONFIG_CIFS_DFS_UPCALL 847 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops); 848 #endif 849 850 #ifdef CONFIG_CIFS_SMB_DIRECT 851 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs, 852 &cifs_rdma_readwrite_threshold_proc_fops); 853 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs, 854 &cifs_smbd_max_frmr_depth_proc_fops); 855 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs, 856 &cifs_smbd_keep_alive_interval_proc_fops); 857 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs, 858 &cifs_smbd_max_receive_size_proc_fops); 859 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs, 860 &cifs_smbd_max_fragmented_recv_size_proc_fops); 861 proc_create("smbd_max_send_size", 0644, proc_fs_cifs, 862 &cifs_smbd_max_send_size_proc_fops); 863 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs, 864 &cifs_smbd_send_credit_target_proc_fops); 865 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs, 866 &cifs_smbd_receive_credit_max_proc_fops); 867 #endif 868 } 869 870 void 871 cifs_proc_clean(void) 872 { 873 if (proc_fs_cifs == NULL) 874 return; 875 876 remove_proc_entry("DebugData", proc_fs_cifs); 877 remove_proc_entry("open_files", proc_fs_cifs); 878 remove_proc_entry("cifsFYI", proc_fs_cifs); 879 remove_proc_entry("traceSMB", proc_fs_cifs); 880 remove_proc_entry("Stats", proc_fs_cifs); 881 remove_proc_entry("SecurityFlags", proc_fs_cifs); 882 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); 883 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); 884 remove_proc_entry("mount_params", proc_fs_cifs); 885 886 #ifdef CONFIG_CIFS_DFS_UPCALL 887 remove_proc_entry("dfscache", proc_fs_cifs); 888 #endif 889 #ifdef CONFIG_CIFS_SMB_DIRECT 890 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs); 891 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs); 892 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs); 893 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs); 894 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs); 895 remove_proc_entry("smbd_max_send_size", proc_fs_cifs); 896 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs); 897 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs); 898 #endif 899 remove_proc_entry("fs/cifs", NULL); 900 } 901 902 static int cifsFYI_proc_show(struct seq_file *m, void *v) 903 { 904 seq_printf(m, "%d\n", cifsFYI); 905 return 0; 906 } 907 908 static int cifsFYI_proc_open(struct inode *inode, struct file *file) 909 { 910 return single_open(file, cifsFYI_proc_show, NULL); 911 } 912 913 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, 914 size_t count, loff_t *ppos) 915 { 916 char c[2] = { '\0' }; 917 bool bv; 918 int rc; 919 920 rc = get_user(c[0], buffer); 921 if (rc) 922 return rc; 923 if (kstrtobool(c, &bv) == 0) 924 cifsFYI = bv; 925 else if ((c[0] > '1') && (c[0] <= '9')) 926 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ 927 else 928 return -EINVAL; 929 930 return count; 931 } 932 933 static const struct proc_ops cifsFYI_proc_ops = { 934 .proc_open = cifsFYI_proc_open, 935 .proc_read = seq_read, 936 .proc_lseek = seq_lseek, 937 .proc_release = single_release, 938 .proc_write = cifsFYI_proc_write, 939 }; 940 941 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) 942 { 943 seq_printf(m, "%d\n", linuxExtEnabled); 944 return 0; 945 } 946 947 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) 948 { 949 return single_open(file, cifs_linux_ext_proc_show, NULL); 950 } 951 952 static ssize_t cifs_linux_ext_proc_write(struct file *file, 953 const char __user *buffer, size_t count, loff_t *ppos) 954 { 955 int rc; 956 957 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); 958 if (rc) 959 return rc; 960 961 return count; 962 } 963 964 static const struct proc_ops cifs_linux_ext_proc_ops = { 965 .proc_open = cifs_linux_ext_proc_open, 966 .proc_read = seq_read, 967 .proc_lseek = seq_lseek, 968 .proc_release = single_release, 969 .proc_write = cifs_linux_ext_proc_write, 970 }; 971 972 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) 973 { 974 seq_printf(m, "%d\n", lookupCacheEnabled); 975 return 0; 976 } 977 978 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) 979 { 980 return single_open(file, cifs_lookup_cache_proc_show, NULL); 981 } 982 983 static ssize_t cifs_lookup_cache_proc_write(struct file *file, 984 const char __user *buffer, size_t count, loff_t *ppos) 985 { 986 int rc; 987 988 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled); 989 if (rc) 990 return rc; 991 992 return count; 993 } 994 995 static const struct proc_ops cifs_lookup_cache_proc_ops = { 996 .proc_open = cifs_lookup_cache_proc_open, 997 .proc_read = seq_read, 998 .proc_lseek = seq_lseek, 999 .proc_release = single_release, 1000 .proc_write = cifs_lookup_cache_proc_write, 1001 }; 1002 1003 static int traceSMB_proc_show(struct seq_file *m, void *v) 1004 { 1005 seq_printf(m, "%d\n", traceSMB); 1006 return 0; 1007 } 1008 1009 static int traceSMB_proc_open(struct inode *inode, struct file *file) 1010 { 1011 return single_open(file, traceSMB_proc_show, NULL); 1012 } 1013 1014 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, 1015 size_t count, loff_t *ppos) 1016 { 1017 int rc; 1018 1019 rc = kstrtobool_from_user(buffer, count, &traceSMB); 1020 if (rc) 1021 return rc; 1022 1023 return count; 1024 } 1025 1026 static const struct proc_ops traceSMB_proc_ops = { 1027 .proc_open = traceSMB_proc_open, 1028 .proc_read = seq_read, 1029 .proc_lseek = seq_lseek, 1030 .proc_release = single_release, 1031 .proc_write = traceSMB_proc_write, 1032 }; 1033 1034 static int cifs_security_flags_proc_show(struct seq_file *m, void *v) 1035 { 1036 seq_printf(m, "0x%x\n", global_secflags); 1037 return 0; 1038 } 1039 1040 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) 1041 { 1042 return single_open(file, cifs_security_flags_proc_show, NULL); 1043 } 1044 1045 /* 1046 * Ensure that if someone sets a MUST flag, that we disable all other MAY 1047 * flags except for the ones corresponding to the given MUST flag. If there are 1048 * multiple MUST flags, then try to prefer more secure ones. 1049 */ 1050 static void 1051 cifs_security_flags_handle_must_flags(unsigned int *flags) 1052 { 1053 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN; 1054 1055 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) 1056 *flags = CIFSSEC_MUST_KRB5; 1057 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) 1058 *flags = CIFSSEC_MUST_NTLMSSP; 1059 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) 1060 *flags = CIFSSEC_MUST_NTLMV2; 1061 1062 *flags |= signflags; 1063 } 1064 1065 static ssize_t cifs_security_flags_proc_write(struct file *file, 1066 const char __user *buffer, size_t count, loff_t *ppos) 1067 { 1068 int rc; 1069 unsigned int flags; 1070 char flags_string[12]; 1071 bool bv; 1072 1073 if ((count < 1) || (count > 11)) 1074 return -EINVAL; 1075 1076 memset(flags_string, 0, 12); 1077 1078 if (copy_from_user(flags_string, buffer, count)) 1079 return -EFAULT; 1080 1081 if (count < 3) { 1082 /* single char or single char followed by null */ 1083 if (kstrtobool(flags_string, &bv) == 0) { 1084 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; 1085 return count; 1086 } else if (!isdigit(flags_string[0])) { 1087 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1088 flags_string); 1089 return -EINVAL; 1090 } 1091 } 1092 1093 /* else we have a number */ 1094 rc = kstrtouint(flags_string, 0, &flags); 1095 if (rc) { 1096 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1097 flags_string); 1098 return rc; 1099 } 1100 1101 cifs_dbg(FYI, "sec flags 0x%x\n", flags); 1102 1103 if (flags == 0) { 1104 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); 1105 return -EINVAL; 1106 } 1107 1108 if (flags & ~CIFSSEC_MASK) { 1109 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", 1110 flags & ~CIFSSEC_MASK); 1111 return -EINVAL; 1112 } 1113 1114 cifs_security_flags_handle_must_flags(&flags); 1115 1116 /* flags look ok - update the global security flags for cifs module */ 1117 global_secflags = flags; 1118 if (global_secflags & CIFSSEC_MUST_SIGN) { 1119 /* requiring signing implies signing is allowed */ 1120 global_secflags |= CIFSSEC_MAY_SIGN; 1121 cifs_dbg(FYI, "packet signing now required\n"); 1122 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { 1123 cifs_dbg(FYI, "packet signing disabled\n"); 1124 } 1125 /* BB should we turn on MAY flags for other MUST options? */ 1126 return count; 1127 } 1128 1129 static const struct proc_ops cifs_security_flags_proc_ops = { 1130 .proc_open = cifs_security_flags_proc_open, 1131 .proc_read = seq_read, 1132 .proc_lseek = seq_lseek, 1133 .proc_release = single_release, 1134 .proc_write = cifs_security_flags_proc_write, 1135 }; 1136 1137 /* To make it easier to debug, can help to show mount params */ 1138 static int cifs_mount_params_proc_show(struct seq_file *m, void *v) 1139 { 1140 const struct fs_parameter_spec *p; 1141 const char *type; 1142 1143 for (p = smb3_fs_parameters; p->name; p++) { 1144 /* cannot use switch with pointers... */ 1145 if (!p->type) { 1146 if (p->flags == fs_param_neg_with_no) 1147 type = "noflag"; 1148 else 1149 type = "flag"; 1150 } else if (p->type == fs_param_is_bool) 1151 type = "bool"; 1152 else if (p->type == fs_param_is_u32) 1153 type = "u32"; 1154 else if (p->type == fs_param_is_u64) 1155 type = "u64"; 1156 else if (p->type == fs_param_is_string) 1157 type = "string"; 1158 else 1159 type = "unknown"; 1160 1161 seq_printf(m, "%s:%s\n", p->name, type); 1162 } 1163 1164 return 0; 1165 } 1166 1167 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file) 1168 { 1169 return single_open(file, cifs_mount_params_proc_show, NULL); 1170 } 1171 1172 static const struct proc_ops cifs_mount_params_proc_ops = { 1173 .proc_open = cifs_mount_params_proc_open, 1174 .proc_read = seq_read, 1175 .proc_lseek = seq_lseek, 1176 .proc_release = single_release, 1177 /* No need for write for now */ 1178 /* .proc_write = cifs_mount_params_proc_write, */ 1179 }; 1180 1181 #else 1182 inline void cifs_proc_init(void) 1183 { 1184 } 1185 1186 inline void cifs_proc_clean(void) 1187 { 1188 } 1189 #endif /* PROC_FS */ 1190