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\n", 44 smb->Command, smb->Status.CifsError, 45 smb->Flags, smb->Flags2, smb->Mid, smb->Pid); 46 cifs_dbg(VFS, "smb buf %p len %u\n", smb, 47 server->ops->calc_smb_size(smb)); 48 #endif /* CONFIG_CIFS_DEBUG2 */ 49 } 50 51 void cifs_dump_mids(struct TCP_Server_Info *server) 52 { 53 #ifdef CONFIG_CIFS_DEBUG2 54 struct mid_q_entry *mid_entry; 55 56 if (server == NULL) 57 return; 58 59 cifs_dbg(VFS, "Dump pending requests:\n"); 60 spin_lock(&server->mid_lock); 61 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) { 62 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n", 63 mid_entry->mid_state, 64 le16_to_cpu(mid_entry->command), 65 mid_entry->pid, 66 mid_entry->callback_data, 67 mid_entry->mid); 68 #ifdef CONFIG_CIFS_STATS2 69 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n", 70 mid_entry->large_buf, 71 mid_entry->resp_buf, 72 mid_entry->when_received, 73 jiffies); 74 #endif /* STATS2 */ 75 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n", 76 mid_entry->multiRsp, mid_entry->multiEnd); 77 if (mid_entry->resp_buf) { 78 cifs_dump_detail(mid_entry->resp_buf, server); 79 cifs_dump_mem("existing buf: ", 80 mid_entry->resp_buf, 62); 81 } 82 } 83 spin_unlock(&server->mid_lock); 84 #endif /* CONFIG_CIFS_DEBUG2 */ 85 } 86 87 #ifdef CONFIG_PROC_FS 88 static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon) 89 { 90 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType); 91 92 seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count); 93 if (tcon->nativeFileSystem) 94 seq_printf(m, "Type: %s ", tcon->nativeFileSystem); 95 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d", 96 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics), 97 le32_to_cpu(tcon->fsAttrInfo.Attributes), 98 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength), 99 tcon->status); 100 if (dev_type == FILE_DEVICE_DISK) 101 seq_puts(m, " type: DISK "); 102 else if (dev_type == FILE_DEVICE_CD_ROM) 103 seq_puts(m, " type: CDROM "); 104 else 105 seq_printf(m, " type: %d ", dev_type); 106 107 seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number); 108 109 if ((tcon->seal) || 110 (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) || 111 (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA)) 112 seq_puts(m, " encrypted"); 113 if (tcon->nocase) 114 seq_printf(m, " nocase"); 115 if (tcon->unix_ext) 116 seq_printf(m, " POSIX Extensions"); 117 if (tcon->ses->server->ops->dump_share_caps) 118 tcon->ses->server->ops->dump_share_caps(m, tcon); 119 if (tcon->use_witness) 120 seq_puts(m, " Witness"); 121 if (tcon->broken_sparse_sup) 122 seq_puts(m, " nosparse"); 123 if (tcon->need_reconnect) 124 seq_puts(m, "\tDISCONNECTED "); 125 spin_lock(&tcon->tc_lock); 126 if (tcon->origin_fullpath) { 127 seq_printf(m, "\n\tDFS origin fullpath: %s", 128 tcon->origin_fullpath); 129 } 130 spin_unlock(&tcon->tc_lock); 131 seq_putc(m, '\n'); 132 } 133 134 static void 135 cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan) 136 { 137 struct TCP_Server_Info *server = chan->server; 138 139 if (!server) { 140 seq_printf(m, "\n\n\t\tChannel: %d DISABLED", i+1); 141 return; 142 } 143 144 seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx" 145 "\n\t\tNumber of credits: %d,%d,%d Dialect 0x%x" 146 "\n\t\tTCP status: %d Instance: %d" 147 "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d" 148 "\n\t\tIn Send: %d In MaxReq Wait: %d", 149 i+1, server->conn_id, 150 server->credits, 151 server->echo_credits, 152 server->oplock_credits, 153 server->dialect, 154 server->tcpStatus, 155 server->reconnect_instance, 156 server->srv_count, 157 server->sec_mode, 158 in_flight(server), 159 atomic_read(&server->in_send), 160 atomic_read(&server->num_waiters)); 161 #ifdef CONFIG_NET_NS 162 if (server->net) 163 seq_printf(m, " Net namespace: %u ", server->net->ns.inum); 164 #endif /* NET_NS */ 165 166 } 167 168 static inline const char *smb_speed_to_str(size_t bps) 169 { 170 size_t mbps = bps / 1000 / 1000; 171 172 switch (mbps) { 173 case SPEED_10: 174 return "10Mbps"; 175 case SPEED_100: 176 return "100Mbps"; 177 case SPEED_1000: 178 return "1Gbps"; 179 case SPEED_2500: 180 return "2.5Gbps"; 181 case SPEED_5000: 182 return "5Gbps"; 183 case SPEED_10000: 184 return "10Gbps"; 185 case SPEED_14000: 186 return "14Gbps"; 187 case SPEED_20000: 188 return "20Gbps"; 189 case SPEED_25000: 190 return "25Gbps"; 191 case SPEED_40000: 192 return "40Gbps"; 193 case SPEED_50000: 194 return "50Gbps"; 195 case SPEED_56000: 196 return "56Gbps"; 197 case SPEED_100000: 198 return "100Gbps"; 199 case SPEED_200000: 200 return "200Gbps"; 201 case SPEED_400000: 202 return "400Gbps"; 203 case SPEED_800000: 204 return "800Gbps"; 205 default: 206 return "Unknown"; 207 } 208 } 209 210 static void 211 cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface) 212 { 213 struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr; 214 struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr; 215 216 seq_printf(m, "\tSpeed: %s\n", smb_speed_to_str(iface->speed)); 217 seq_puts(m, "\t\tCapabilities: "); 218 if (iface->rdma_capable) 219 seq_puts(m, "rdma "); 220 if (iface->rss_capable) 221 seq_puts(m, "rss "); 222 if (!iface->rdma_capable && !iface->rss_capable) 223 seq_puts(m, "None"); 224 seq_putc(m, '\n'); 225 if (iface->sockaddr.ss_family == AF_INET) 226 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr); 227 else if (iface->sockaddr.ss_family == AF_INET6) 228 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr); 229 if (!iface->is_active) 230 seq_puts(m, "\t\t[for-cleanup]\n"); 231 } 232 233 static int cifs_debug_files_proc_show(struct seq_file *m, void *v) 234 { 235 struct TCP_Server_Info *server; 236 struct cifs_ses *ses; 237 struct cifs_tcon *tcon; 238 struct cifsFileInfo *cfile; 239 240 seq_puts(m, "# Version:1\n"); 241 seq_puts(m, "# Format:\n"); 242 seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>"); 243 #ifdef CONFIG_CIFS_DEBUG2 244 seq_printf(m, " <filename> <mid>\n"); 245 #else 246 seq_printf(m, " <filename>\n"); 247 #endif /* CIFS_DEBUG2 */ 248 spin_lock(&cifs_tcp_ses_lock); 249 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 250 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 251 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 252 spin_lock(&tcon->open_file_lock); 253 list_for_each_entry(cfile, &tcon->openFileList, tlist) { 254 seq_printf(m, 255 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd", 256 tcon->tid, 257 ses->Suid, 258 cfile->fid.persistent_fid, 259 cfile->f_flags, 260 cfile->count, 261 cfile->pid, 262 from_kuid(&init_user_ns, cfile->uid), 263 cfile->dentry); 264 #ifdef CONFIG_CIFS_DEBUG2 265 seq_printf(m, " %llu\n", cfile->fid.mid); 266 #else 267 seq_printf(m, "\n"); 268 #endif /* CIFS_DEBUG2 */ 269 } 270 spin_unlock(&tcon->open_file_lock); 271 } 272 } 273 } 274 spin_unlock(&cifs_tcp_ses_lock); 275 seq_putc(m, '\n'); 276 return 0; 277 } 278 279 static int cifs_debug_data_proc_show(struct seq_file *m, void *v) 280 { 281 struct mid_q_entry *mid_entry; 282 struct TCP_Server_Info *server; 283 struct TCP_Server_Info *chan_server; 284 struct cifs_ses *ses; 285 struct cifs_tcon *tcon; 286 struct cifs_server_iface *iface; 287 size_t iface_weight = 0, iface_min_speed = 0; 288 struct cifs_server_iface *last_iface = NULL; 289 int c, i, j; 290 291 seq_puts(m, 292 "Display Internal CIFS Data Structures for Debugging\n" 293 "---------------------------------------------------\n"); 294 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); 295 seq_printf(m, "Features:"); 296 #ifdef CONFIG_CIFS_DFS_UPCALL 297 seq_printf(m, " DFS"); 298 #endif 299 #ifdef CONFIG_CIFS_FSCACHE 300 seq_printf(m, ",FSCACHE"); 301 #endif 302 #ifdef CONFIG_CIFS_SMB_DIRECT 303 seq_printf(m, ",SMB_DIRECT"); 304 #endif 305 #ifdef CONFIG_CIFS_STATS2 306 seq_printf(m, ",STATS2"); 307 #else 308 seq_printf(m, ",STATS"); 309 #endif 310 #ifdef CONFIG_CIFS_DEBUG2 311 seq_printf(m, ",DEBUG2"); 312 #elif defined(CONFIG_CIFS_DEBUG) 313 seq_printf(m, ",DEBUG"); 314 #endif 315 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 316 seq_printf(m, ",ALLOW_INSECURE_LEGACY"); 317 #endif 318 #ifdef CONFIG_CIFS_POSIX 319 seq_printf(m, ",CIFS_POSIX"); 320 #endif 321 #ifdef CONFIG_CIFS_UPCALL 322 seq_printf(m, ",UPCALL(SPNEGO)"); 323 #endif 324 #ifdef CONFIG_CIFS_XATTR 325 seq_printf(m, ",XATTR"); 326 #endif 327 seq_printf(m, ",ACL"); 328 #ifdef CONFIG_CIFS_SWN_UPCALL 329 seq_puts(m, ",WITNESS"); 330 #endif 331 seq_putc(m, '\n'); 332 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize); 333 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); 334 335 seq_printf(m, "\nServers: "); 336 337 c = 0; 338 spin_lock(&cifs_tcp_ses_lock); 339 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 340 /* channel info will be printed as a part of sessions below */ 341 if (SERVER_IS_CHAN(server)) 342 continue; 343 344 c++; 345 seq_printf(m, "\n%d) ConnectionId: 0x%llx ", 346 c, server->conn_id); 347 348 spin_lock(&server->srv_lock); 349 if (server->hostname) 350 seq_printf(m, "Hostname: %s ", server->hostname); 351 seq_printf(m, "\nClientGUID: %pUL", server->client_guid); 352 spin_unlock(&server->srv_lock); 353 #ifdef CONFIG_CIFS_SMB_DIRECT 354 if (!server->rdma) 355 goto skip_rdma; 356 357 if (!server->smbd_conn) { 358 seq_printf(m, "\nSMBDirect transport not available"); 359 goto skip_rdma; 360 } 361 362 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x " 363 "transport status: %x", 364 server->smbd_conn->protocol, 365 server->smbd_conn->transport_status); 366 seq_printf(m, "\nConn receive_credit_max: %x " 367 "send_credit_target: %x max_send_size: %x", 368 server->smbd_conn->receive_credit_max, 369 server->smbd_conn->send_credit_target, 370 server->smbd_conn->max_send_size); 371 seq_printf(m, "\nConn max_fragmented_recv_size: %x " 372 "max_fragmented_send_size: %x max_receive_size:%x", 373 server->smbd_conn->max_fragmented_recv_size, 374 server->smbd_conn->max_fragmented_send_size, 375 server->smbd_conn->max_receive_size); 376 seq_printf(m, "\nConn keep_alive_interval: %x " 377 "max_readwrite_size: %x rdma_readwrite_threshold: %x", 378 server->smbd_conn->keep_alive_interval, 379 server->smbd_conn->max_readwrite_size, 380 server->smbd_conn->rdma_readwrite_threshold); 381 seq_printf(m, "\nDebug count_get_receive_buffer: %x " 382 "count_put_receive_buffer: %x count_send_empty: %x", 383 server->smbd_conn->count_get_receive_buffer, 384 server->smbd_conn->count_put_receive_buffer, 385 server->smbd_conn->count_send_empty); 386 seq_printf(m, "\nRead Queue count_reassembly_queue: %x " 387 "count_enqueue_reassembly_queue: %x " 388 "count_dequeue_reassembly_queue: %x " 389 "fragment_reassembly_remaining: %x " 390 "reassembly_data_length: %x " 391 "reassembly_queue_length: %x", 392 server->smbd_conn->count_reassembly_queue, 393 server->smbd_conn->count_enqueue_reassembly_queue, 394 server->smbd_conn->count_dequeue_reassembly_queue, 395 server->smbd_conn->fragment_reassembly_remaining, 396 server->smbd_conn->reassembly_data_length, 397 server->smbd_conn->reassembly_queue_length); 398 seq_printf(m, "\nCurrent Credits send_credits: %x " 399 "receive_credits: %x receive_credit_target: %x", 400 atomic_read(&server->smbd_conn->send_credits), 401 atomic_read(&server->smbd_conn->receive_credits), 402 server->smbd_conn->receive_credit_target); 403 seq_printf(m, "\nPending send_pending: %x ", 404 atomic_read(&server->smbd_conn->send_pending)); 405 seq_printf(m, "\nReceive buffers count_receive_queue: %x " 406 "count_empty_packet_queue: %x", 407 server->smbd_conn->count_receive_queue, 408 server->smbd_conn->count_empty_packet_queue); 409 seq_printf(m, "\nMR responder_resources: %x " 410 "max_frmr_depth: %x mr_type: %x", 411 server->smbd_conn->responder_resources, 412 server->smbd_conn->max_frmr_depth, 413 server->smbd_conn->mr_type); 414 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x", 415 atomic_read(&server->smbd_conn->mr_ready_count), 416 atomic_read(&server->smbd_conn->mr_used_count)); 417 skip_rdma: 418 #endif 419 seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x", 420 server->credits, 421 server->echo_credits, 422 server->oplock_credits, 423 server->dialect); 424 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1) 425 seq_printf(m, " COMPRESS_LZNT1"); 426 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77) 427 seq_printf(m, " COMPRESS_LZ77"); 428 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF) 429 seq_printf(m, " COMPRESS_LZ77_HUFF"); 430 if (server->sign) 431 seq_printf(m, " signed"); 432 if (server->posix_ext_supported) 433 seq_printf(m, " posix"); 434 if (server->nosharesock) 435 seq_printf(m, " nosharesock"); 436 437 seq_printf(m, "\nServer capabilities: 0x%x", server->capabilities); 438 439 if (server->rdma) 440 seq_printf(m, "\nRDMA "); 441 seq_printf(m, "\nTCP status: %d Instance: %d" 442 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d", 443 server->tcpStatus, 444 server->reconnect_instance, 445 server->srv_count, 446 server->sec_mode, in_flight(server)); 447 #ifdef CONFIG_NET_NS 448 if (server->net) 449 seq_printf(m, " Net namespace: %u ", server->net->ns.inum); 450 #endif /* NET_NS */ 451 452 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d", 453 atomic_read(&server->in_send), 454 atomic_read(&server->num_waiters)); 455 456 if (server->leaf_fullpath) { 457 seq_printf(m, "\nDFS leaf full path: %s", 458 server->leaf_fullpath); 459 } 460 461 seq_printf(m, "\n\n\tSessions: "); 462 i = 0; 463 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 464 spin_lock(&ses->ses_lock); 465 if (ses->ses_status == SES_EXITING) { 466 spin_unlock(&ses->ses_lock); 467 continue; 468 } 469 i++; 470 if ((ses->serverDomain == NULL) || 471 (ses->serverOS == NULL) || 472 (ses->serverNOS == NULL)) { 473 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ", 474 i, ses->ip_addr, ses->ses_count, 475 ses->capabilities, ses->ses_status); 476 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) 477 seq_printf(m, "Guest "); 478 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) 479 seq_printf(m, "Anonymous "); 480 } else { 481 seq_printf(m, 482 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s " 483 "\n\tNOS: %s\tCapability: 0x%x" 484 "\n\tSMB session status: %d ", 485 i, ses->ip_addr, ses->serverDomain, 486 ses->ses_count, ses->serverOS, ses->serverNOS, 487 ses->capabilities, ses->ses_status); 488 } 489 spin_unlock(&ses->ses_lock); 490 491 seq_printf(m, "\n\tSecurity type: %s ", 492 get_security_type_str(server->ops->select_sectype(server, ses->sectype))); 493 494 /* dump session id helpful for use with network trace */ 495 seq_printf(m, " SessionId: 0x%llx", ses->Suid); 496 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) { 497 seq_puts(m, " encrypted"); 498 /* can help in debugging to show encryption type */ 499 if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM) 500 seq_puts(m, "(gcm256)"); 501 } 502 if (ses->sign) 503 seq_puts(m, " signed"); 504 505 seq_printf(m, "\n\tUser: %d Cred User: %d", 506 from_kuid(&init_user_ns, ses->linux_uid), 507 from_kuid(&init_user_ns, ses->cred_uid)); 508 509 if (ses->dfs_root_ses) { 510 seq_printf(m, "\n\tDFS root session id: 0x%llx", 511 ses->dfs_root_ses->Suid); 512 } 513 514 spin_lock(&ses->chan_lock); 515 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0)) 516 seq_puts(m, "\tPrimary channel: DISCONNECTED "); 517 if (CIFS_CHAN_IN_RECONNECT(ses, 0)) 518 seq_puts(m, "\t[RECONNECTING] "); 519 520 if (ses->chan_count > 1) { 521 seq_printf(m, "\n\n\tExtra Channels: %zu ", 522 ses->chan_count-1); 523 for (j = 1; j < ses->chan_count; j++) { 524 cifs_dump_channel(m, j, &ses->chans[j]); 525 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j)) 526 seq_puts(m, "\tDISCONNECTED "); 527 if (CIFS_CHAN_IN_RECONNECT(ses, j)) 528 seq_puts(m, "\t[RECONNECTING] "); 529 } 530 } 531 spin_unlock(&ses->chan_lock); 532 533 seq_puts(m, "\n\n\tShares: "); 534 j = 0; 535 536 seq_printf(m, "\n\t%d) IPC: ", j); 537 if (ses->tcon_ipc) 538 cifs_debug_tcon(m, ses->tcon_ipc); 539 else 540 seq_puts(m, "none\n"); 541 542 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 543 ++j; 544 seq_printf(m, "\n\t%d) ", j); 545 cifs_debug_tcon(m, tcon); 546 } 547 548 spin_lock(&ses->iface_lock); 549 if (ses->iface_count) 550 seq_printf(m, "\n\n\tServer interfaces: %zu" 551 "\tLast updated: %lu seconds ago", 552 ses->iface_count, 553 (jiffies - ses->iface_last_update) / HZ); 554 555 last_iface = list_last_entry(&ses->iface_list, 556 struct cifs_server_iface, 557 iface_head); 558 iface_min_speed = last_iface->speed; 559 560 j = 0; 561 list_for_each_entry(iface, &ses->iface_list, 562 iface_head) { 563 seq_printf(m, "\n\t%d)", ++j); 564 cifs_dump_iface(m, iface); 565 566 iface_weight = iface->speed / iface_min_speed; 567 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)" 568 "\n\t\tAllocated channels: %u\n", 569 iface->weight_fulfilled, 570 iface_weight, 571 iface->num_channels); 572 573 if (is_ses_using_iface(ses, iface)) 574 seq_puts(m, "\t\t[CONNECTED]\n"); 575 } 576 spin_unlock(&ses->iface_lock); 577 578 seq_puts(m, "\n\n\tMIDs: "); 579 spin_lock(&ses->chan_lock); 580 for (j = 0; j < ses->chan_count; j++) { 581 chan_server = ses->chans[j].server; 582 if (!chan_server) 583 continue; 584 585 if (list_empty(&chan_server->pending_mid_q)) 586 continue; 587 588 seq_printf(m, "\n\tServer ConnectionId: 0x%llx", 589 chan_server->conn_id); 590 spin_lock(&chan_server->mid_lock); 591 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) { 592 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu", 593 mid_entry->mid_state, 594 le16_to_cpu(mid_entry->command), 595 mid_entry->pid, 596 mid_entry->callback_data, 597 mid_entry->mid); 598 } 599 spin_unlock(&chan_server->mid_lock); 600 } 601 spin_unlock(&ses->chan_lock); 602 seq_puts(m, "\n--\n"); 603 } 604 if (i == 0) 605 seq_printf(m, "\n\t\t[NONE]"); 606 } 607 if (c == 0) 608 seq_printf(m, "\n\t[NONE]"); 609 610 spin_unlock(&cifs_tcp_ses_lock); 611 seq_putc(m, '\n'); 612 cifs_swn_dump(m); 613 614 /* BB add code to dump additional info such as TCP session info now */ 615 return 0; 616 } 617 618 static ssize_t cifs_stats_proc_write(struct file *file, 619 const char __user *buffer, size_t count, loff_t *ppos) 620 { 621 bool bv; 622 int rc; 623 struct TCP_Server_Info *server; 624 struct cifs_ses *ses; 625 struct cifs_tcon *tcon; 626 627 rc = kstrtobool_from_user(buffer, count, &bv); 628 if (rc == 0) { 629 #ifdef CONFIG_CIFS_STATS2 630 int i; 631 632 atomic_set(&total_buf_alloc_count, 0); 633 atomic_set(&total_small_buf_alloc_count, 0); 634 #endif /* CONFIG_CIFS_STATS2 */ 635 atomic_set(&tcpSesReconnectCount, 0); 636 atomic_set(&tconInfoReconnectCount, 0); 637 638 spin_lock(&GlobalMid_Lock); 639 GlobalMaxActiveXid = 0; 640 GlobalCurrentXid = 0; 641 spin_unlock(&GlobalMid_Lock); 642 spin_lock(&cifs_tcp_ses_lock); 643 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 644 server->max_in_flight = 0; 645 #ifdef CONFIG_CIFS_STATS2 646 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { 647 atomic_set(&server->num_cmds[i], 0); 648 atomic_set(&server->smb2slowcmd[i], 0); 649 server->time_per_cmd[i] = 0; 650 server->slowest_cmd[i] = 0; 651 server->fastest_cmd[0] = 0; 652 } 653 #endif /* CONFIG_CIFS_STATS2 */ 654 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 655 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 656 atomic_set(&tcon->num_smbs_sent, 0); 657 spin_lock(&tcon->stat_lock); 658 tcon->bytes_read = 0; 659 tcon->bytes_written = 0; 660 spin_unlock(&tcon->stat_lock); 661 if (server->ops->clear_stats) 662 server->ops->clear_stats(tcon); 663 } 664 } 665 } 666 spin_unlock(&cifs_tcp_ses_lock); 667 } else { 668 return rc; 669 } 670 671 return count; 672 } 673 674 static int cifs_stats_proc_show(struct seq_file *m, void *v) 675 { 676 int i; 677 #ifdef CONFIG_CIFS_STATS2 678 int j; 679 #endif /* STATS2 */ 680 struct TCP_Server_Info *server; 681 struct cifs_ses *ses; 682 struct cifs_tcon *tcon; 683 684 seq_printf(m, "Resources in use\nCIFS Session: %d\n", 685 sesInfoAllocCount.counter); 686 seq_printf(m, "Share (unique mount targets): %d\n", 687 tconInfoAllocCount.counter); 688 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", 689 buf_alloc_count.counter, 690 cifs_min_rcv + tcpSesAllocCount.counter); 691 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", 692 small_buf_alloc_count.counter, cifs_min_small); 693 #ifdef CONFIG_CIFS_STATS2 694 seq_printf(m, "Total Large %d Small %d Allocations\n", 695 atomic_read(&total_buf_alloc_count), 696 atomic_read(&total_small_buf_alloc_count)); 697 #endif /* CONFIG_CIFS_STATS2 */ 698 699 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count)); 700 seq_printf(m, 701 "\n%d session %d share reconnects\n", 702 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); 703 704 seq_printf(m, 705 "Total vfs operations: %d maximum at one time: %d\n", 706 GlobalCurrentXid, GlobalMaxActiveXid); 707 708 i = 0; 709 spin_lock(&cifs_tcp_ses_lock); 710 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 711 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight); 712 #ifdef CONFIG_CIFS_STATS2 713 seq_puts(m, "\nTotal time spent processing by command. Time "); 714 seq_printf(m, "units are jiffies (%d per second)\n", HZ); 715 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n"); 716 seq_puts(m, " --------\t------\t----------\t-------\t-------\n"); 717 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 718 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j, 719 atomic_read(&server->num_cmds[j]), 720 server->time_per_cmd[j], 721 server->fastest_cmd[j], 722 server->slowest_cmd[j]); 723 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 724 if (atomic_read(&server->smb2slowcmd[j])) { 725 spin_lock(&server->srv_lock); 726 seq_printf(m, " %d slow responses from %s for command %d\n", 727 atomic_read(&server->smb2slowcmd[j]), 728 server->hostname, j); 729 spin_unlock(&server->srv_lock); 730 } 731 #endif /* STATS2 */ 732 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 733 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 734 i++; 735 seq_printf(m, "\n%d) %s", i, tcon->tree_name); 736 if (tcon->need_reconnect) 737 seq_puts(m, "\tDISCONNECTED "); 738 seq_printf(m, "\nSMBs: %d", 739 atomic_read(&tcon->num_smbs_sent)); 740 if (server->ops->print_stats) 741 server->ops->print_stats(m, tcon); 742 } 743 } 744 } 745 spin_unlock(&cifs_tcp_ses_lock); 746 747 seq_putc(m, '\n'); 748 return 0; 749 } 750 751 static int cifs_stats_proc_open(struct inode *inode, struct file *file) 752 { 753 return single_open(file, cifs_stats_proc_show, NULL); 754 } 755 756 static const struct proc_ops cifs_stats_proc_ops = { 757 .proc_open = cifs_stats_proc_open, 758 .proc_read = seq_read, 759 .proc_lseek = seq_lseek, 760 .proc_release = single_release, 761 .proc_write = cifs_stats_proc_write, 762 }; 763 764 #ifdef CONFIG_CIFS_SMB_DIRECT 765 #define PROC_FILE_DEFINE(name) \ 766 static ssize_t name##_write(struct file *file, const char __user *buffer, \ 767 size_t count, loff_t *ppos) \ 768 { \ 769 int rc; \ 770 rc = kstrtoint_from_user(buffer, count, 10, &name); \ 771 if (rc) \ 772 return rc; \ 773 return count; \ 774 } \ 775 static int name##_proc_show(struct seq_file *m, void *v) \ 776 { \ 777 seq_printf(m, "%d\n", name); \ 778 return 0; \ 779 } \ 780 static int name##_open(struct inode *inode, struct file *file) \ 781 { \ 782 return single_open(file, name##_proc_show, NULL); \ 783 } \ 784 \ 785 static const struct proc_ops cifs_##name##_proc_fops = { \ 786 .proc_open = name##_open, \ 787 .proc_read = seq_read, \ 788 .proc_lseek = seq_lseek, \ 789 .proc_release = single_release, \ 790 .proc_write = name##_write, \ 791 } 792 793 PROC_FILE_DEFINE(rdma_readwrite_threshold); 794 PROC_FILE_DEFINE(smbd_max_frmr_depth); 795 PROC_FILE_DEFINE(smbd_keep_alive_interval); 796 PROC_FILE_DEFINE(smbd_max_receive_size); 797 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size); 798 PROC_FILE_DEFINE(smbd_max_send_size); 799 PROC_FILE_DEFINE(smbd_send_credit_target); 800 PROC_FILE_DEFINE(smbd_receive_credit_max); 801 #endif 802 803 static struct proc_dir_entry *proc_fs_cifs; 804 static const struct proc_ops cifsFYI_proc_ops; 805 static const struct proc_ops cifs_lookup_cache_proc_ops; 806 static const struct proc_ops traceSMB_proc_ops; 807 static const struct proc_ops cifs_security_flags_proc_ops; 808 static const struct proc_ops cifs_linux_ext_proc_ops; 809 static const struct proc_ops cifs_mount_params_proc_ops; 810 811 void 812 cifs_proc_init(void) 813 { 814 proc_fs_cifs = proc_mkdir("fs/cifs", NULL); 815 if (proc_fs_cifs == NULL) 816 return; 817 818 proc_create_single("DebugData", 0, proc_fs_cifs, 819 cifs_debug_data_proc_show); 820 821 proc_create_single("open_files", 0400, proc_fs_cifs, 822 cifs_debug_files_proc_show); 823 824 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops); 825 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops); 826 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops); 827 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs, 828 &cifs_linux_ext_proc_ops); 829 proc_create("SecurityFlags", 0644, proc_fs_cifs, 830 &cifs_security_flags_proc_ops); 831 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs, 832 &cifs_lookup_cache_proc_ops); 833 834 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops); 835 836 #ifdef CONFIG_CIFS_DFS_UPCALL 837 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops); 838 #endif 839 840 #ifdef CONFIG_CIFS_SMB_DIRECT 841 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs, 842 &cifs_rdma_readwrite_threshold_proc_fops); 843 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs, 844 &cifs_smbd_max_frmr_depth_proc_fops); 845 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs, 846 &cifs_smbd_keep_alive_interval_proc_fops); 847 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs, 848 &cifs_smbd_max_receive_size_proc_fops); 849 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs, 850 &cifs_smbd_max_fragmented_recv_size_proc_fops); 851 proc_create("smbd_max_send_size", 0644, proc_fs_cifs, 852 &cifs_smbd_max_send_size_proc_fops); 853 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs, 854 &cifs_smbd_send_credit_target_proc_fops); 855 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs, 856 &cifs_smbd_receive_credit_max_proc_fops); 857 #endif 858 } 859 860 void 861 cifs_proc_clean(void) 862 { 863 if (proc_fs_cifs == NULL) 864 return; 865 866 remove_proc_entry("DebugData", proc_fs_cifs); 867 remove_proc_entry("open_files", proc_fs_cifs); 868 remove_proc_entry("cifsFYI", proc_fs_cifs); 869 remove_proc_entry("traceSMB", proc_fs_cifs); 870 remove_proc_entry("Stats", proc_fs_cifs); 871 remove_proc_entry("SecurityFlags", proc_fs_cifs); 872 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); 873 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); 874 remove_proc_entry("mount_params", proc_fs_cifs); 875 876 #ifdef CONFIG_CIFS_DFS_UPCALL 877 remove_proc_entry("dfscache", proc_fs_cifs); 878 #endif 879 #ifdef CONFIG_CIFS_SMB_DIRECT 880 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs); 881 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs); 882 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs); 883 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs); 884 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs); 885 remove_proc_entry("smbd_max_send_size", proc_fs_cifs); 886 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs); 887 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs); 888 #endif 889 remove_proc_entry("fs/cifs", NULL); 890 } 891 892 static int cifsFYI_proc_show(struct seq_file *m, void *v) 893 { 894 seq_printf(m, "%d\n", cifsFYI); 895 return 0; 896 } 897 898 static int cifsFYI_proc_open(struct inode *inode, struct file *file) 899 { 900 return single_open(file, cifsFYI_proc_show, NULL); 901 } 902 903 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, 904 size_t count, loff_t *ppos) 905 { 906 char c[2] = { '\0' }; 907 bool bv; 908 int rc; 909 910 rc = get_user(c[0], buffer); 911 if (rc) 912 return rc; 913 if (kstrtobool(c, &bv) == 0) 914 cifsFYI = bv; 915 else if ((c[0] > '1') && (c[0] <= '9')) 916 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ 917 else 918 return -EINVAL; 919 920 return count; 921 } 922 923 static const struct proc_ops cifsFYI_proc_ops = { 924 .proc_open = cifsFYI_proc_open, 925 .proc_read = seq_read, 926 .proc_lseek = seq_lseek, 927 .proc_release = single_release, 928 .proc_write = cifsFYI_proc_write, 929 }; 930 931 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) 932 { 933 seq_printf(m, "%d\n", linuxExtEnabled); 934 return 0; 935 } 936 937 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) 938 { 939 return single_open(file, cifs_linux_ext_proc_show, NULL); 940 } 941 942 static ssize_t cifs_linux_ext_proc_write(struct file *file, 943 const char __user *buffer, size_t count, loff_t *ppos) 944 { 945 int rc; 946 947 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); 948 if (rc) 949 return rc; 950 951 return count; 952 } 953 954 static const struct proc_ops cifs_linux_ext_proc_ops = { 955 .proc_open = cifs_linux_ext_proc_open, 956 .proc_read = seq_read, 957 .proc_lseek = seq_lseek, 958 .proc_release = single_release, 959 .proc_write = cifs_linux_ext_proc_write, 960 }; 961 962 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) 963 { 964 seq_printf(m, "%d\n", lookupCacheEnabled); 965 return 0; 966 } 967 968 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) 969 { 970 return single_open(file, cifs_lookup_cache_proc_show, NULL); 971 } 972 973 static ssize_t cifs_lookup_cache_proc_write(struct file *file, 974 const char __user *buffer, size_t count, loff_t *ppos) 975 { 976 int rc; 977 978 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled); 979 if (rc) 980 return rc; 981 982 return count; 983 } 984 985 static const struct proc_ops cifs_lookup_cache_proc_ops = { 986 .proc_open = cifs_lookup_cache_proc_open, 987 .proc_read = seq_read, 988 .proc_lseek = seq_lseek, 989 .proc_release = single_release, 990 .proc_write = cifs_lookup_cache_proc_write, 991 }; 992 993 static int traceSMB_proc_show(struct seq_file *m, void *v) 994 { 995 seq_printf(m, "%d\n", traceSMB); 996 return 0; 997 } 998 999 static int traceSMB_proc_open(struct inode *inode, struct file *file) 1000 { 1001 return single_open(file, traceSMB_proc_show, NULL); 1002 } 1003 1004 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, 1005 size_t count, loff_t *ppos) 1006 { 1007 int rc; 1008 1009 rc = kstrtobool_from_user(buffer, count, &traceSMB); 1010 if (rc) 1011 return rc; 1012 1013 return count; 1014 } 1015 1016 static const struct proc_ops traceSMB_proc_ops = { 1017 .proc_open = traceSMB_proc_open, 1018 .proc_read = seq_read, 1019 .proc_lseek = seq_lseek, 1020 .proc_release = single_release, 1021 .proc_write = traceSMB_proc_write, 1022 }; 1023 1024 static int cifs_security_flags_proc_show(struct seq_file *m, void *v) 1025 { 1026 seq_printf(m, "0x%x\n", global_secflags); 1027 return 0; 1028 } 1029 1030 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) 1031 { 1032 return single_open(file, cifs_security_flags_proc_show, NULL); 1033 } 1034 1035 /* 1036 * Ensure that if someone sets a MUST flag, that we disable all other MAY 1037 * flags except for the ones corresponding to the given MUST flag. If there are 1038 * multiple MUST flags, then try to prefer more secure ones. 1039 */ 1040 static void 1041 cifs_security_flags_handle_must_flags(unsigned int *flags) 1042 { 1043 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN; 1044 1045 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) 1046 *flags = CIFSSEC_MUST_KRB5; 1047 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) 1048 *flags = CIFSSEC_MUST_NTLMSSP; 1049 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) 1050 *flags = CIFSSEC_MUST_NTLMV2; 1051 1052 *flags |= signflags; 1053 } 1054 1055 static ssize_t cifs_security_flags_proc_write(struct file *file, 1056 const char __user *buffer, size_t count, loff_t *ppos) 1057 { 1058 int rc; 1059 unsigned int flags; 1060 char flags_string[12]; 1061 bool bv; 1062 1063 if ((count < 1) || (count > 11)) 1064 return -EINVAL; 1065 1066 memset(flags_string, 0, 12); 1067 1068 if (copy_from_user(flags_string, buffer, count)) 1069 return -EFAULT; 1070 1071 if (count < 3) { 1072 /* single char or single char followed by null */ 1073 if (kstrtobool(flags_string, &bv) == 0) { 1074 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; 1075 return count; 1076 } else if (!isdigit(flags_string[0])) { 1077 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1078 flags_string); 1079 return -EINVAL; 1080 } 1081 } 1082 1083 /* else we have a number */ 1084 rc = kstrtouint(flags_string, 0, &flags); 1085 if (rc) { 1086 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1087 flags_string); 1088 return rc; 1089 } 1090 1091 cifs_dbg(FYI, "sec flags 0x%x\n", flags); 1092 1093 if (flags == 0) { 1094 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); 1095 return -EINVAL; 1096 } 1097 1098 if (flags & ~CIFSSEC_MASK) { 1099 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", 1100 flags & ~CIFSSEC_MASK); 1101 return -EINVAL; 1102 } 1103 1104 cifs_security_flags_handle_must_flags(&flags); 1105 1106 /* flags look ok - update the global security flags for cifs module */ 1107 global_secflags = flags; 1108 if (global_secflags & CIFSSEC_MUST_SIGN) { 1109 /* requiring signing implies signing is allowed */ 1110 global_secflags |= CIFSSEC_MAY_SIGN; 1111 cifs_dbg(FYI, "packet signing now required\n"); 1112 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { 1113 cifs_dbg(FYI, "packet signing disabled\n"); 1114 } 1115 /* BB should we turn on MAY flags for other MUST options? */ 1116 return count; 1117 } 1118 1119 static const struct proc_ops cifs_security_flags_proc_ops = { 1120 .proc_open = cifs_security_flags_proc_open, 1121 .proc_read = seq_read, 1122 .proc_lseek = seq_lseek, 1123 .proc_release = single_release, 1124 .proc_write = cifs_security_flags_proc_write, 1125 }; 1126 1127 /* To make it easier to debug, can help to show mount params */ 1128 static int cifs_mount_params_proc_show(struct seq_file *m, void *v) 1129 { 1130 const struct fs_parameter_spec *p; 1131 const char *type; 1132 1133 for (p = smb3_fs_parameters; p->name; p++) { 1134 /* cannot use switch with pointers... */ 1135 if (!p->type) { 1136 if (p->flags == fs_param_neg_with_no) 1137 type = "noflag"; 1138 else 1139 type = "flag"; 1140 } else if (p->type == fs_param_is_bool) 1141 type = "bool"; 1142 else if (p->type == fs_param_is_u32) 1143 type = "u32"; 1144 else if (p->type == fs_param_is_u64) 1145 type = "u64"; 1146 else if (p->type == fs_param_is_string) 1147 type = "string"; 1148 else 1149 type = "unknown"; 1150 1151 seq_printf(m, "%s:%s\n", p->name, type); 1152 } 1153 1154 return 0; 1155 } 1156 1157 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file) 1158 { 1159 return single_open(file, cifs_mount_params_proc_show, NULL); 1160 } 1161 1162 static const struct proc_ops cifs_mount_params_proc_ops = { 1163 .proc_open = cifs_mount_params_proc_open, 1164 .proc_read = seq_read, 1165 .proc_lseek = seq_lseek, 1166 .proc_release = single_release, 1167 /* No need for write for now */ 1168 /* .proc_write = cifs_mount_params_proc_write, */ 1169 }; 1170 1171 #else 1172 inline void cifs_proc_init(void) 1173 { 1174 } 1175 1176 inline void cifs_proc_clean(void) 1177 { 1178 } 1179 #endif /* PROC_FS */ 1180