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 30void 31cifs_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 38void 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 53void 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 90static 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 136static void 137cifs_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 170static 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 212static void 213cifs_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 235static int cifs_debug_files_proc_show(struct seq_file *m, void *v) 236{ 237 struct TCP_Server_Info *server; 238 struct cifs_ses *ses; 239 struct cifs_tcon *tcon; 240 struct cifsFileInfo *cfile; 241 242 seq_puts(m, "# Version:1\n"); 243 seq_puts(m, "# Format:\n"); 244 seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>"); 245#ifdef CONFIG_CIFS_DEBUG2 246 seq_printf(m, " <filename> <mid>\n"); 247#else 248 seq_printf(m, " <filename>\n"); 249#endif /* CIFS_DEBUG2 */ 250 spin_lock(&cifs_tcp_ses_lock); 251 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 252 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 253 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 254 spin_lock(&tcon->open_file_lock); 255 list_for_each_entry(cfile, &tcon->openFileList, tlist) { 256 seq_printf(m, 257 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd", 258 tcon->tid, 259 ses->Suid, 260 cfile->fid.persistent_fid, 261 cfile->f_flags, 262 cfile->count, 263 cfile->pid, 264 from_kuid(&init_user_ns, cfile->uid), 265 cfile->dentry); 266#ifdef CONFIG_CIFS_DEBUG2 267 seq_printf(m, " %llu\n", cfile->fid.mid); 268#else 269 seq_printf(m, "\n"); 270#endif /* CIFS_DEBUG2 */ 271 } 272 spin_unlock(&tcon->open_file_lock); 273 } 274 } 275 } 276 spin_unlock(&cifs_tcp_ses_lock); 277 seq_putc(m, '\n'); 278 return 0; 279} 280 281static int cifs_debug_data_proc_show(struct seq_file *m, void *v) 282{ 283 struct mid_q_entry *mid_entry; 284 struct TCP_Server_Info *server; 285 struct TCP_Server_Info *chan_server; 286 struct cifs_ses *ses; 287 struct cifs_tcon *tcon; 288 struct cifs_server_iface *iface; 289 size_t iface_weight = 0, iface_min_speed = 0; 290 struct cifs_server_iface *last_iface = NULL; 291 int c, i, j; 292 293 seq_puts(m, 294 "Display Internal CIFS Data Structures for Debugging\n" 295 "---------------------------------------------------\n"); 296 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); 297 seq_printf(m, "Features:"); 298#ifdef CONFIG_CIFS_DFS_UPCALL 299 seq_printf(m, " DFS"); 300#endif 301#ifdef CONFIG_CIFS_FSCACHE 302 seq_printf(m, ",FSCACHE"); 303#endif 304#ifdef CONFIG_CIFS_SMB_DIRECT 305 seq_printf(m, ",SMB_DIRECT"); 306#endif 307#ifdef CONFIG_CIFS_STATS2 308 seq_printf(m, ",STATS2"); 309#else 310 seq_printf(m, ",STATS"); 311#endif 312#ifdef CONFIG_CIFS_DEBUG2 313 seq_printf(m, ",DEBUG2"); 314#elif defined(CONFIG_CIFS_DEBUG) 315 seq_printf(m, ",DEBUG"); 316#endif 317#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY 318 seq_printf(m, ",ALLOW_INSECURE_LEGACY"); 319#endif 320#ifdef CONFIG_CIFS_POSIX 321 seq_printf(m, ",CIFS_POSIX"); 322#endif 323#ifdef CONFIG_CIFS_UPCALL 324 seq_printf(m, ",UPCALL(SPNEGO)"); 325#endif 326#ifdef CONFIG_CIFS_XATTR 327 seq_printf(m, ",XATTR"); 328#endif 329 seq_printf(m, ",ACL"); 330#ifdef CONFIG_CIFS_SWN_UPCALL 331 seq_puts(m, ",WITNESS"); 332#endif 333 seq_putc(m, '\n'); 334 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize); 335 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); 336 337 seq_printf(m, "\nServers: "); 338 339 c = 0; 340 spin_lock(&cifs_tcp_ses_lock); 341 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 342 /* channel info will be printed as a part of sessions below */ 343 if (SERVER_IS_CHAN(server)) 344 continue; 345 346 c++; 347 seq_printf(m, "\n%d) ConnectionId: 0x%llx ", 348 c, server->conn_id); 349 350 spin_lock(&server->srv_lock); 351 if (server->hostname) 352 seq_printf(m, "Hostname: %s ", server->hostname); 353 seq_printf(m, "\nClientGUID: %pUL", server->client_guid); 354 spin_unlock(&server->srv_lock); 355#ifdef CONFIG_CIFS_SMB_DIRECT 356 if (!server->rdma) 357 goto skip_rdma; 358 359 if (!server->smbd_conn) { 360 seq_printf(m, "\nSMBDirect transport not available"); 361 goto skip_rdma; 362 } 363 364 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x " 365 "transport status: %x", 366 server->smbd_conn->protocol, 367 server->smbd_conn->transport_status); 368 seq_printf(m, "\nConn receive_credit_max: %x " 369 "send_credit_target: %x max_send_size: %x", 370 server->smbd_conn->receive_credit_max, 371 server->smbd_conn->send_credit_target, 372 server->smbd_conn->max_send_size); 373 seq_printf(m, "\nConn max_fragmented_recv_size: %x " 374 "max_fragmented_send_size: %x max_receive_size:%x", 375 server->smbd_conn->max_fragmented_recv_size, 376 server->smbd_conn->max_fragmented_send_size, 377 server->smbd_conn->max_receive_size); 378 seq_printf(m, "\nConn keep_alive_interval: %x " 379 "max_readwrite_size: %x rdma_readwrite_threshold: %x", 380 server->smbd_conn->keep_alive_interval, 381 server->smbd_conn->max_readwrite_size, 382 server->smbd_conn->rdma_readwrite_threshold); 383 seq_printf(m, "\nDebug count_get_receive_buffer: %x " 384 "count_put_receive_buffer: %x count_send_empty: %x", 385 server->smbd_conn->count_get_receive_buffer, 386 server->smbd_conn->count_put_receive_buffer, 387 server->smbd_conn->count_send_empty); 388 seq_printf(m, "\nRead Queue count_reassembly_queue: %x " 389 "count_enqueue_reassembly_queue: %x " 390 "count_dequeue_reassembly_queue: %x " 391 "fragment_reassembly_remaining: %x " 392 "reassembly_data_length: %x " 393 "reassembly_queue_length: %x", 394 server->smbd_conn->count_reassembly_queue, 395 server->smbd_conn->count_enqueue_reassembly_queue, 396 server->smbd_conn->count_dequeue_reassembly_queue, 397 server->smbd_conn->fragment_reassembly_remaining, 398 server->smbd_conn->reassembly_data_length, 399 server->smbd_conn->reassembly_queue_length); 400 seq_printf(m, "\nCurrent Credits send_credits: %x " 401 "receive_credits: %x receive_credit_target: %x", 402 atomic_read(&server->smbd_conn->send_credits), 403 atomic_read(&server->smbd_conn->receive_credits), 404 server->smbd_conn->receive_credit_target); 405 seq_printf(m, "\nPending send_pending: %x ", 406 atomic_read(&server->smbd_conn->send_pending)); 407 seq_printf(m, "\nReceive buffers count_receive_queue: %x " 408 "count_empty_packet_queue: %x", 409 server->smbd_conn->count_receive_queue, 410 server->smbd_conn->count_empty_packet_queue); 411 seq_printf(m, "\nMR responder_resources: %x " 412 "max_frmr_depth: %x mr_type: %x", 413 server->smbd_conn->responder_resources, 414 server->smbd_conn->max_frmr_depth, 415 server->smbd_conn->mr_type); 416 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x", 417 atomic_read(&server->smbd_conn->mr_ready_count), 418 atomic_read(&server->smbd_conn->mr_used_count)); 419skip_rdma: 420#endif 421 seq_printf(m, "\nNumber of credits: %d,%d,%d Dialect 0x%x", 422 server->credits, 423 server->echo_credits, 424 server->oplock_credits, 425 server->dialect); 426 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1) 427 seq_printf(m, " COMPRESS_LZNT1"); 428 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77) 429 seq_printf(m, " COMPRESS_LZ77"); 430 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF) 431 seq_printf(m, " COMPRESS_LZ77_HUFF"); 432 if (server->sign) 433 seq_printf(m, " signed"); 434 if (server->posix_ext_supported) 435 seq_printf(m, " posix"); 436 if (server->nosharesock) 437 seq_printf(m, " nosharesock"); 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 if (ses->expired_pwd) 490 seq_puts(m, "password no longer valid "); 491 spin_unlock(&ses->ses_lock); 492 493 seq_printf(m, "\n\tSecurity type: %s ", 494 get_security_type_str(server->ops->select_sectype(server, ses->sectype))); 495 496 /* dump session id helpful for use with network trace */ 497 seq_printf(m, " SessionId: 0x%llx", ses->Suid); 498 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) { 499 seq_puts(m, " encrypted"); 500 /* can help in debugging to show encryption type */ 501 if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM) 502 seq_puts(m, "(gcm256)"); 503 } 504 if (ses->sign) 505 seq_puts(m, " signed"); 506 507 seq_printf(m, "\n\tUser: %d Cred User: %d", 508 from_kuid(&init_user_ns, ses->linux_uid), 509 from_kuid(&init_user_ns, ses->cred_uid)); 510 511 if (ses->dfs_root_ses) { 512 seq_printf(m, "\n\tDFS root session id: 0x%llx", 513 ses->dfs_root_ses->Suid); 514 } 515 516 spin_lock(&ses->chan_lock); 517 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0)) 518 seq_puts(m, "\tPrimary channel: DISCONNECTED "); 519 if (CIFS_CHAN_IN_RECONNECT(ses, 0)) 520 seq_puts(m, "\t[RECONNECTING] "); 521 522 if (ses->chan_count > 1) { 523 seq_printf(m, "\n\n\tExtra Channels: %zu ", 524 ses->chan_count-1); 525 for (j = 1; j < ses->chan_count; j++) { 526 cifs_dump_channel(m, j, &ses->chans[j]); 527 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j)) 528 seq_puts(m, "\tDISCONNECTED "); 529 if (CIFS_CHAN_IN_RECONNECT(ses, j)) 530 seq_puts(m, "\t[RECONNECTING] "); 531 } 532 } 533 spin_unlock(&ses->chan_lock); 534 535 seq_puts(m, "\n\n\tShares: "); 536 j = 0; 537 538 seq_printf(m, "\n\t%d) IPC: ", j); 539 if (ses->tcon_ipc) 540 cifs_debug_tcon(m, ses->tcon_ipc); 541 else 542 seq_puts(m, "none\n"); 543 544 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 545 ++j; 546 seq_printf(m, "\n\t%d) ", j); 547 cifs_debug_tcon(m, tcon); 548 } 549 550 spin_lock(&ses->iface_lock); 551 if (ses->iface_count) 552 seq_printf(m, "\n\n\tServer interfaces: %zu" 553 "\tLast updated: %lu seconds ago", 554 ses->iface_count, 555 (jiffies - ses->iface_last_update) / HZ); 556 557 last_iface = list_last_entry(&ses->iface_list, 558 struct cifs_server_iface, 559 iface_head); 560 iface_min_speed = last_iface->speed; 561 562 j = 0; 563 list_for_each_entry(iface, &ses->iface_list, 564 iface_head) { 565 seq_printf(m, "\n\t%d)", ++j); 566 cifs_dump_iface(m, iface); 567 568 iface_weight = iface->speed / iface_min_speed; 569 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)" 570 "\n\t\tAllocated channels: %u\n", 571 iface->weight_fulfilled, 572 iface_weight, 573 iface->num_channels); 574 575 if (is_ses_using_iface(ses, iface)) 576 seq_puts(m, "\t\t[CONNECTED]\n"); 577 } 578 spin_unlock(&ses->iface_lock); 579 580 seq_puts(m, "\n\n\tMIDs: "); 581 spin_lock(&ses->chan_lock); 582 for (j = 0; j < ses->chan_count; j++) { 583 chan_server = ses->chans[j].server; 584 if (!chan_server) 585 continue; 586 587 if (list_empty(&chan_server->pending_mid_q)) 588 continue; 589 590 seq_printf(m, "\n\tServer ConnectionId: 0x%llx", 591 chan_server->conn_id); 592 spin_lock(&chan_server->mid_lock); 593 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) { 594 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu", 595 mid_entry->mid_state, 596 le16_to_cpu(mid_entry->command), 597 mid_entry->pid, 598 mid_entry->callback_data, 599 mid_entry->mid); 600 } 601 spin_unlock(&chan_server->mid_lock); 602 } 603 spin_unlock(&ses->chan_lock); 604 seq_puts(m, "\n--\n"); 605 } 606 if (i == 0) 607 seq_printf(m, "\n\t\t[NONE]"); 608 } 609 if (c == 0) 610 seq_printf(m, "\n\t[NONE]"); 611 612 spin_unlock(&cifs_tcp_ses_lock); 613 seq_putc(m, '\n'); 614 cifs_swn_dump(m); 615 616 /* BB add code to dump additional info such as TCP session info now */ 617 return 0; 618} 619 620static ssize_t cifs_stats_proc_write(struct file *file, 621 const char __user *buffer, size_t count, loff_t *ppos) 622{ 623 bool bv; 624 int rc; 625 struct TCP_Server_Info *server; 626 struct cifs_ses *ses; 627 struct cifs_tcon *tcon; 628 629 rc = kstrtobool_from_user(buffer, count, &bv); 630 if (rc == 0) { 631#ifdef CONFIG_CIFS_STATS2 632 int i; 633 634 atomic_set(&total_buf_alloc_count, 0); 635 atomic_set(&total_small_buf_alloc_count, 0); 636#endif /* CONFIG_CIFS_STATS2 */ 637 atomic_set(&tcpSesReconnectCount, 0); 638 atomic_set(&tconInfoReconnectCount, 0); 639 640 spin_lock(&GlobalMid_Lock); 641 GlobalMaxActiveXid = 0; 642 GlobalCurrentXid = 0; 643 spin_unlock(&GlobalMid_Lock); 644 spin_lock(&cifs_tcp_ses_lock); 645 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 646 server->max_in_flight = 0; 647#ifdef CONFIG_CIFS_STATS2 648 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { 649 atomic_set(&server->num_cmds[i], 0); 650 atomic_set(&server->smb2slowcmd[i], 0); 651 server->time_per_cmd[i] = 0; 652 server->slowest_cmd[i] = 0; 653 server->fastest_cmd[0] = 0; 654 } 655#endif /* CONFIG_CIFS_STATS2 */ 656 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 657 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 658 atomic_set(&tcon->num_smbs_sent, 0); 659 spin_lock(&tcon->stat_lock); 660 tcon->bytes_read = 0; 661 tcon->bytes_written = 0; 662 spin_unlock(&tcon->stat_lock); 663 if (server->ops->clear_stats) 664 server->ops->clear_stats(tcon); 665 } 666 } 667 } 668 spin_unlock(&cifs_tcp_ses_lock); 669 } else { 670 return rc; 671 } 672 673 return count; 674} 675 676static int cifs_stats_proc_show(struct seq_file *m, void *v) 677{ 678 int i; 679#ifdef CONFIG_CIFS_STATS2 680 int j; 681#endif /* STATS2 */ 682 struct TCP_Server_Info *server; 683 struct cifs_ses *ses; 684 struct cifs_tcon *tcon; 685 686 seq_printf(m, "Resources in use\nCIFS Session: %d\n", 687 sesInfoAllocCount.counter); 688 seq_printf(m, "Share (unique mount targets): %d\n", 689 tconInfoAllocCount.counter); 690 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", 691 buf_alloc_count.counter, 692 cifs_min_rcv + tcpSesAllocCount.counter); 693 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", 694 small_buf_alloc_count.counter, cifs_min_small); 695#ifdef CONFIG_CIFS_STATS2 696 seq_printf(m, "Total Large %d Small %d Allocations\n", 697 atomic_read(&total_buf_alloc_count), 698 atomic_read(&total_small_buf_alloc_count)); 699#endif /* CONFIG_CIFS_STATS2 */ 700 701 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count)); 702 seq_printf(m, 703 "\n%d session %d share reconnects\n", 704 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); 705 706 seq_printf(m, 707 "Total vfs operations: %d maximum at one time: %d\n", 708 GlobalCurrentXid, GlobalMaxActiveXid); 709 710 i = 0; 711 spin_lock(&cifs_tcp_ses_lock); 712 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { 713 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight); 714#ifdef CONFIG_CIFS_STATS2 715 seq_puts(m, "\nTotal time spent processing by command. Time "); 716 seq_printf(m, "units are jiffies (%d per second)\n", HZ); 717 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n"); 718 seq_puts(m, " --------\t------\t----------\t-------\t-------\n"); 719 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 720 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j, 721 atomic_read(&server->num_cmds[j]), 722 server->time_per_cmd[j], 723 server->fastest_cmd[j], 724 server->slowest_cmd[j]); 725 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) 726 if (atomic_read(&server->smb2slowcmd[j])) { 727 spin_lock(&server->srv_lock); 728 seq_printf(m, " %d slow responses from %s for command %d\n", 729 atomic_read(&server->smb2slowcmd[j]), 730 server->hostname, j); 731 spin_unlock(&server->srv_lock); 732 } 733#endif /* STATS2 */ 734 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { 735 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { 736 i++; 737 seq_printf(m, "\n%d) %s", i, tcon->tree_name); 738 if (tcon->need_reconnect) 739 seq_puts(m, "\tDISCONNECTED "); 740 seq_printf(m, "\nSMBs: %d", 741 atomic_read(&tcon->num_smbs_sent)); 742 if (server->ops->print_stats) 743 server->ops->print_stats(m, tcon); 744 } 745 } 746 } 747 spin_unlock(&cifs_tcp_ses_lock); 748 749 seq_putc(m, '\n'); 750 return 0; 751} 752 753static int cifs_stats_proc_open(struct inode *inode, struct file *file) 754{ 755 return single_open(file, cifs_stats_proc_show, NULL); 756} 757 758static const struct proc_ops cifs_stats_proc_ops = { 759 .proc_open = cifs_stats_proc_open, 760 .proc_read = seq_read, 761 .proc_lseek = seq_lseek, 762 .proc_release = single_release, 763 .proc_write = cifs_stats_proc_write, 764}; 765 766#ifdef CONFIG_CIFS_SMB_DIRECT 767#define PROC_FILE_DEFINE(name) \ 768static ssize_t name##_write(struct file *file, const char __user *buffer, \ 769 size_t count, loff_t *ppos) \ 770{ \ 771 int rc; \ 772 rc = kstrtoint_from_user(buffer, count, 10, & name); \ 773 if (rc) \ 774 return rc; \ 775 return count; \ 776} \ 777static int name##_proc_show(struct seq_file *m, void *v) \ 778{ \ 779 seq_printf(m, "%d\n", name ); \ 780 return 0; \ 781} \ 782static int name##_open(struct inode *inode, struct file *file) \ 783{ \ 784 return single_open(file, name##_proc_show, NULL); \ 785} \ 786\ 787static const struct proc_ops cifs_##name##_proc_fops = { \ 788 .proc_open = name##_open, \ 789 .proc_read = seq_read, \ 790 .proc_lseek = seq_lseek, \ 791 .proc_release = single_release, \ 792 .proc_write = name##_write, \ 793} 794 795PROC_FILE_DEFINE(rdma_readwrite_threshold); 796PROC_FILE_DEFINE(smbd_max_frmr_depth); 797PROC_FILE_DEFINE(smbd_keep_alive_interval); 798PROC_FILE_DEFINE(smbd_max_receive_size); 799PROC_FILE_DEFINE(smbd_max_fragmented_recv_size); 800PROC_FILE_DEFINE(smbd_max_send_size); 801PROC_FILE_DEFINE(smbd_send_credit_target); 802PROC_FILE_DEFINE(smbd_receive_credit_max); 803#endif 804 805static struct proc_dir_entry *proc_fs_cifs; 806static const struct proc_ops cifsFYI_proc_ops; 807static const struct proc_ops cifs_lookup_cache_proc_ops; 808static const struct proc_ops traceSMB_proc_ops; 809static const struct proc_ops cifs_security_flags_proc_ops; 810static const struct proc_ops cifs_linux_ext_proc_ops; 811static const struct proc_ops cifs_mount_params_proc_ops; 812 813void 814cifs_proc_init(void) 815{ 816 proc_fs_cifs = proc_mkdir("fs/cifs", NULL); 817 if (proc_fs_cifs == NULL) 818 return; 819 820 proc_create_single("DebugData", 0, proc_fs_cifs, 821 cifs_debug_data_proc_show); 822 823 proc_create_single("open_files", 0400, proc_fs_cifs, 824 cifs_debug_files_proc_show); 825 826 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops); 827 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops); 828 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops); 829 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs, 830 &cifs_linux_ext_proc_ops); 831 proc_create("SecurityFlags", 0644, proc_fs_cifs, 832 &cifs_security_flags_proc_ops); 833 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs, 834 &cifs_lookup_cache_proc_ops); 835 836 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops); 837 838#ifdef CONFIG_CIFS_DFS_UPCALL 839 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops); 840#endif 841 842#ifdef CONFIG_CIFS_SMB_DIRECT 843 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs, 844 &cifs_rdma_readwrite_threshold_proc_fops); 845 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs, 846 &cifs_smbd_max_frmr_depth_proc_fops); 847 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs, 848 &cifs_smbd_keep_alive_interval_proc_fops); 849 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs, 850 &cifs_smbd_max_receive_size_proc_fops); 851 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs, 852 &cifs_smbd_max_fragmented_recv_size_proc_fops); 853 proc_create("smbd_max_send_size", 0644, proc_fs_cifs, 854 &cifs_smbd_max_send_size_proc_fops); 855 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs, 856 &cifs_smbd_send_credit_target_proc_fops); 857 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs, 858 &cifs_smbd_receive_credit_max_proc_fops); 859#endif 860} 861 862void 863cifs_proc_clean(void) 864{ 865 if (proc_fs_cifs == NULL) 866 return; 867 868 remove_proc_entry("DebugData", proc_fs_cifs); 869 remove_proc_entry("open_files", proc_fs_cifs); 870 remove_proc_entry("cifsFYI", proc_fs_cifs); 871 remove_proc_entry("traceSMB", proc_fs_cifs); 872 remove_proc_entry("Stats", proc_fs_cifs); 873 remove_proc_entry("SecurityFlags", proc_fs_cifs); 874 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); 875 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); 876 remove_proc_entry("mount_params", proc_fs_cifs); 877 878#ifdef CONFIG_CIFS_DFS_UPCALL 879 remove_proc_entry("dfscache", proc_fs_cifs); 880#endif 881#ifdef CONFIG_CIFS_SMB_DIRECT 882 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs); 883 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs); 884 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs); 885 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs); 886 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs); 887 remove_proc_entry("smbd_max_send_size", proc_fs_cifs); 888 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs); 889 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs); 890#endif 891 remove_proc_entry("fs/cifs", NULL); 892} 893 894static int cifsFYI_proc_show(struct seq_file *m, void *v) 895{ 896 seq_printf(m, "%d\n", cifsFYI); 897 return 0; 898} 899 900static int cifsFYI_proc_open(struct inode *inode, struct file *file) 901{ 902 return single_open(file, cifsFYI_proc_show, NULL); 903} 904 905static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, 906 size_t count, loff_t *ppos) 907{ 908 char c[2] = { '\0' }; 909 bool bv; 910 int rc; 911 912 rc = get_user(c[0], buffer); 913 if (rc) 914 return rc; 915 if (kstrtobool(c, &bv) == 0) 916 cifsFYI = bv; 917 else if ((c[0] > '1') && (c[0] <= '9')) 918 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ 919 else 920 return -EINVAL; 921 922 return count; 923} 924 925static const struct proc_ops cifsFYI_proc_ops = { 926 .proc_open = cifsFYI_proc_open, 927 .proc_read = seq_read, 928 .proc_lseek = seq_lseek, 929 .proc_release = single_release, 930 .proc_write = cifsFYI_proc_write, 931}; 932 933static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) 934{ 935 seq_printf(m, "%d\n", linuxExtEnabled); 936 return 0; 937} 938 939static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) 940{ 941 return single_open(file, cifs_linux_ext_proc_show, NULL); 942} 943 944static ssize_t cifs_linux_ext_proc_write(struct file *file, 945 const char __user *buffer, size_t count, loff_t *ppos) 946{ 947 int rc; 948 949 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); 950 if (rc) 951 return rc; 952 953 return count; 954} 955 956static const struct proc_ops cifs_linux_ext_proc_ops = { 957 .proc_open = cifs_linux_ext_proc_open, 958 .proc_read = seq_read, 959 .proc_lseek = seq_lseek, 960 .proc_release = single_release, 961 .proc_write = cifs_linux_ext_proc_write, 962}; 963 964static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) 965{ 966 seq_printf(m, "%d\n", lookupCacheEnabled); 967 return 0; 968} 969 970static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) 971{ 972 return single_open(file, cifs_lookup_cache_proc_show, NULL); 973} 974 975static ssize_t cifs_lookup_cache_proc_write(struct file *file, 976 const char __user *buffer, size_t count, loff_t *ppos) 977{ 978 int rc; 979 980 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled); 981 if (rc) 982 return rc; 983 984 return count; 985} 986 987static const struct proc_ops cifs_lookup_cache_proc_ops = { 988 .proc_open = cifs_lookup_cache_proc_open, 989 .proc_read = seq_read, 990 .proc_lseek = seq_lseek, 991 .proc_release = single_release, 992 .proc_write = cifs_lookup_cache_proc_write, 993}; 994 995static int traceSMB_proc_show(struct seq_file *m, void *v) 996{ 997 seq_printf(m, "%d\n", traceSMB); 998 return 0; 999} 1000 1001static int traceSMB_proc_open(struct inode *inode, struct file *file) 1002{ 1003 return single_open(file, traceSMB_proc_show, NULL); 1004} 1005 1006static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, 1007 size_t count, loff_t *ppos) 1008{ 1009 int rc; 1010 1011 rc = kstrtobool_from_user(buffer, count, &traceSMB); 1012 if (rc) 1013 return rc; 1014 1015 return count; 1016} 1017 1018static const struct proc_ops traceSMB_proc_ops = { 1019 .proc_open = traceSMB_proc_open, 1020 .proc_read = seq_read, 1021 .proc_lseek = seq_lseek, 1022 .proc_release = single_release, 1023 .proc_write = traceSMB_proc_write, 1024}; 1025 1026static int cifs_security_flags_proc_show(struct seq_file *m, void *v) 1027{ 1028 seq_printf(m, "0x%x\n", global_secflags); 1029 return 0; 1030} 1031 1032static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) 1033{ 1034 return single_open(file, cifs_security_flags_proc_show, NULL); 1035} 1036 1037/* 1038 * Ensure that if someone sets a MUST flag, that we disable all other MAY 1039 * flags except for the ones corresponding to the given MUST flag. If there are 1040 * multiple MUST flags, then try to prefer more secure ones. 1041 */ 1042static void 1043cifs_security_flags_handle_must_flags(unsigned int *flags) 1044{ 1045 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN; 1046 1047 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) 1048 *flags = CIFSSEC_MUST_KRB5; 1049 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) 1050 *flags = CIFSSEC_MUST_NTLMSSP; 1051 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) 1052 *flags = CIFSSEC_MUST_NTLMV2; 1053 1054 *flags |= signflags; 1055} 1056 1057static ssize_t cifs_security_flags_proc_write(struct file *file, 1058 const char __user *buffer, size_t count, loff_t *ppos) 1059{ 1060 int rc; 1061 unsigned int flags; 1062 char flags_string[12]; 1063 bool bv; 1064 1065 if ((count < 1) || (count > 11)) 1066 return -EINVAL; 1067 1068 memset(flags_string, 0, 12); 1069 1070 if (copy_from_user(flags_string, buffer, count)) 1071 return -EFAULT; 1072 1073 if (count < 3) { 1074 /* single char or single char followed by null */ 1075 if (kstrtobool(flags_string, &bv) == 0) { 1076 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; 1077 return count; 1078 } else if (!isdigit(flags_string[0])) { 1079 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1080 flags_string); 1081 return -EINVAL; 1082 } 1083 } 1084 1085 /* else we have a number */ 1086 rc = kstrtouint(flags_string, 0, &flags); 1087 if (rc) { 1088 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", 1089 flags_string); 1090 return rc; 1091 } 1092 1093 cifs_dbg(FYI, "sec flags 0x%x\n", flags); 1094 1095 if (flags == 0) { 1096 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); 1097 return -EINVAL; 1098 } 1099 1100 if (flags & ~CIFSSEC_MASK) { 1101 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", 1102 flags & ~CIFSSEC_MASK); 1103 return -EINVAL; 1104 } 1105 1106 cifs_security_flags_handle_must_flags(&flags); 1107 1108 /* flags look ok - update the global security flags for cifs module */ 1109 global_secflags = flags; 1110 if (global_secflags & CIFSSEC_MUST_SIGN) { 1111 /* requiring signing implies signing is allowed */ 1112 global_secflags |= CIFSSEC_MAY_SIGN; 1113 cifs_dbg(FYI, "packet signing now required\n"); 1114 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { 1115 cifs_dbg(FYI, "packet signing disabled\n"); 1116 } 1117 /* BB should we turn on MAY flags for other MUST options? */ 1118 return count; 1119} 1120 1121static const struct proc_ops cifs_security_flags_proc_ops = { 1122 .proc_open = cifs_security_flags_proc_open, 1123 .proc_read = seq_read, 1124 .proc_lseek = seq_lseek, 1125 .proc_release = single_release, 1126 .proc_write = cifs_security_flags_proc_write, 1127}; 1128 1129/* To make it easier to debug, can help to show mount params */ 1130static int cifs_mount_params_proc_show(struct seq_file *m, void *v) 1131{ 1132 const struct fs_parameter_spec *p; 1133 const char *type; 1134 1135 for (p = smb3_fs_parameters; p->name; p++) { 1136 /* cannot use switch with pointers... */ 1137 if (!p->type) { 1138 if (p->flags == fs_param_neg_with_no) 1139 type = "noflag"; 1140 else 1141 type = "flag"; 1142 } else if (p->type == fs_param_is_bool) 1143 type = "bool"; 1144 else if (p->type == fs_param_is_u32) 1145 type = "u32"; 1146 else if (p->type == fs_param_is_u64) 1147 type = "u64"; 1148 else if (p->type == fs_param_is_string) 1149 type = "string"; 1150 else 1151 type = "unknown"; 1152 1153 seq_printf(m, "%s:%s\n", p->name, type); 1154 } 1155 1156 return 0; 1157} 1158 1159static int cifs_mount_params_proc_open(struct inode *inode, struct file *file) 1160{ 1161 return single_open(file, cifs_mount_params_proc_show, NULL); 1162} 1163 1164static const struct proc_ops cifs_mount_params_proc_ops = { 1165 .proc_open = cifs_mount_params_proc_open, 1166 .proc_read = seq_read, 1167 .proc_lseek = seq_lseek, 1168 .proc_release = single_release, 1169 /* No need for write for now */ 1170 /* .proc_write = cifs_mount_params_proc_write, */ 1171}; 1172 1173#else 1174inline void cifs_proc_init(void) 1175{ 1176} 1177 1178inline void cifs_proc_clean(void) 1179{ 1180} 1181#endif /* PROC_FS */ 1182