1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Copyright (C) International Business Machines Corp., 2000,2005
6 * Modified by Steve French (sfrench@us.ibm.com)
9 #include <linux/string.h>
10 #include <linux/ctype.h>
11 #include <linux/module.h>
12 #include <linux/proc_fs.h>
13 #include <linux/uaccess.h>
16 #include "cifsproto.h"
17 #include "cifs_debug.h"
19 #include "fs_context.h"
20 #ifdef CONFIG_CIFS_DFS_UPCALL
21 #include "dfs_cache.h"
23 #ifdef CONFIG_CIFS_SMB_DIRECT
24 #include "smbdirect.h"
29 cifs_dump_mem(char *label, void *data, int length)
31 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
32 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
36 void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
38 #ifdef CONFIG_CIFS_DEBUG2
39 struct smb_hdr *smb = buf;
41 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
42 smb->Command, smb->Status.CifsError,
43 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
44 cifs_dbg(VFS, "smb buf %p len %u\n", smb,
45 server->ops->calc_smb_size(smb));
46 #endif /* CONFIG_CIFS_DEBUG2 */
49 void cifs_dump_mids(struct TCP_Server_Info *server)
51 #ifdef CONFIG_CIFS_DEBUG2
52 struct mid_q_entry *mid_entry;
57 cifs_dbg(VFS, "Dump pending requests:\n");
58 spin_lock(&server->mid_lock);
59 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
60 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
62 le16_to_cpu(mid_entry->command),
64 mid_entry->callback_data,
66 #ifdef CONFIG_CIFS_STATS2
67 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
70 mid_entry->when_received,
73 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
74 mid_entry->multiRsp, mid_entry->multiEnd);
75 if (mid_entry->resp_buf) {
76 cifs_dump_detail(mid_entry->resp_buf, server);
77 cifs_dump_mem("existing buf: ",
78 mid_entry->resp_buf, 62);
81 spin_unlock(&server->mid_lock);
82 #endif /* CONFIG_CIFS_DEBUG2 */
86 static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
88 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
90 seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count);
91 if (tcon->nativeFileSystem)
92 seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
93 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
94 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
95 le32_to_cpu(tcon->fsAttrInfo.Attributes),
96 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
98 if (dev_type == FILE_DEVICE_DISK)
99 seq_puts(m, " type: DISK ");
100 else if (dev_type == FILE_DEVICE_CD_ROM)
101 seq_puts(m, " type: CDROM ");
103 seq_printf(m, " type: %d ", dev_type);
105 seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
108 (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
109 (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
110 seq_printf(m, " Encrypted");
112 seq_printf(m, " nocase");
114 seq_printf(m, " POSIX Extensions");
115 if (tcon->ses->server->ops->dump_share_caps)
116 tcon->ses->server->ops->dump_share_caps(m, tcon);
117 if (tcon->use_witness)
118 seq_puts(m, " Witness");
119 if (tcon->broken_sparse_sup)
120 seq_puts(m, " nosparse");
121 if (tcon->need_reconnect)
122 seq_puts(m, "\tDISCONNECTED ");
127 cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
129 struct TCP_Server_Info *server = chan->server;
131 seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx"
132 "\n\t\tNumber of credits: %d Dialect 0x%x"
133 "\n\t\tTCP status: %d Instance: %d"
134 "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d"
135 "\n\t\tIn Send: %d In MaxReq Wait: %d",
136 i+1, server->conn_id,
140 server->reconnect_instance,
144 atomic_read(&server->in_send),
145 atomic_read(&server->num_waiters));
149 cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
151 struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
152 struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
154 seq_printf(m, "\tSpeed: %zu bps\n", iface->speed);
155 seq_puts(m, "\t\tCapabilities: ");
156 if (iface->rdma_capable)
157 seq_puts(m, "rdma ");
158 if (iface->rss_capable)
161 if (iface->sockaddr.ss_family == AF_INET)
162 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
163 else if (iface->sockaddr.ss_family == AF_INET6)
164 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
165 if (!iface->is_active)
166 seq_puts(m, "\t\t[for-cleanup]\n");
169 static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
171 struct TCP_Server_Info *server;
172 struct cifs_ses *ses;
173 struct cifs_tcon *tcon;
174 struct cifsFileInfo *cfile;
176 seq_puts(m, "# Version:1\n");
177 seq_puts(m, "# Format:\n");
178 seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>");
179 #ifdef CONFIG_CIFS_DEBUG2
180 seq_printf(m, " <filename> <mid>\n");
182 seq_printf(m, " <filename>\n");
183 #endif /* CIFS_DEBUG2 */
184 spin_lock(&cifs_tcp_ses_lock);
185 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
186 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
187 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
188 spin_lock(&tcon->open_file_lock);
189 list_for_each_entry(cfile, &tcon->openFileList, tlist) {
191 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd",
194 cfile->fid.persistent_fid,
198 from_kuid(&init_user_ns, cfile->uid),
200 #ifdef CONFIG_CIFS_DEBUG2
201 seq_printf(m, " %llu\n", cfile->fid.mid);
204 #endif /* CIFS_DEBUG2 */
206 spin_unlock(&tcon->open_file_lock);
210 spin_unlock(&cifs_tcp_ses_lock);
215 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
217 struct mid_q_entry *mid_entry;
218 struct TCP_Server_Info *server;
219 struct TCP_Server_Info *chan_server;
220 struct cifs_ses *ses;
221 struct cifs_tcon *tcon;
222 struct cifs_server_iface *iface;
226 "Display Internal CIFS Data Structures for Debugging\n"
227 "---------------------------------------------------\n");
228 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
229 seq_printf(m, "Features:");
230 #ifdef CONFIG_CIFS_DFS_UPCALL
231 seq_printf(m, " DFS");
233 #ifdef CONFIG_CIFS_FSCACHE
234 seq_printf(m, ",FSCACHE");
236 #ifdef CONFIG_CIFS_SMB_DIRECT
237 seq_printf(m, ",SMB_DIRECT");
239 #ifdef CONFIG_CIFS_STATS2
240 seq_printf(m, ",STATS2");
242 seq_printf(m, ",STATS");
244 #ifdef CONFIG_CIFS_DEBUG2
245 seq_printf(m, ",DEBUG2");
246 #elif defined(CONFIG_CIFS_DEBUG)
247 seq_printf(m, ",DEBUG");
249 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
250 seq_printf(m, ",ALLOW_INSECURE_LEGACY");
252 #ifdef CONFIG_CIFS_POSIX
253 seq_printf(m, ",CIFS_POSIX");
255 #ifdef CONFIG_CIFS_UPCALL
256 seq_printf(m, ",UPCALL(SPNEGO)");
258 #ifdef CONFIG_CIFS_XATTR
259 seq_printf(m, ",XATTR");
261 seq_printf(m, ",ACL");
262 #ifdef CONFIG_CIFS_SWN_UPCALL
263 seq_puts(m, ",WITNESS");
266 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
267 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
269 seq_printf(m, "\nServers: ");
272 spin_lock(&cifs_tcp_ses_lock);
273 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
274 /* channel info will be printed as a part of sessions below */
275 if (CIFS_SERVER_IS_CHAN(server))
279 seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
282 if (server->hostname)
283 seq_printf(m, "Hostname: %s ", server->hostname);
284 #ifdef CONFIG_CIFS_SMB_DIRECT
288 if (!server->smbd_conn) {
289 seq_printf(m, "\nSMBDirect transport not available");
293 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
294 "transport status: %x",
295 server->smbd_conn->protocol,
296 server->smbd_conn->transport_status);
297 seq_printf(m, "\nConn receive_credit_max: %x "
298 "send_credit_target: %x max_send_size: %x",
299 server->smbd_conn->receive_credit_max,
300 server->smbd_conn->send_credit_target,
301 server->smbd_conn->max_send_size);
302 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
303 "max_fragmented_send_size: %x max_receive_size:%x",
304 server->smbd_conn->max_fragmented_recv_size,
305 server->smbd_conn->max_fragmented_send_size,
306 server->smbd_conn->max_receive_size);
307 seq_printf(m, "\nConn keep_alive_interval: %x "
308 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
309 server->smbd_conn->keep_alive_interval,
310 server->smbd_conn->max_readwrite_size,
311 server->smbd_conn->rdma_readwrite_threshold);
312 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
313 "count_put_receive_buffer: %x count_send_empty: %x",
314 server->smbd_conn->count_get_receive_buffer,
315 server->smbd_conn->count_put_receive_buffer,
316 server->smbd_conn->count_send_empty);
317 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
318 "count_enqueue_reassembly_queue: %x "
319 "count_dequeue_reassembly_queue: %x "
320 "fragment_reassembly_remaining: %x "
321 "reassembly_data_length: %x "
322 "reassembly_queue_length: %x",
323 server->smbd_conn->count_reassembly_queue,
324 server->smbd_conn->count_enqueue_reassembly_queue,
325 server->smbd_conn->count_dequeue_reassembly_queue,
326 server->smbd_conn->fragment_reassembly_remaining,
327 server->smbd_conn->reassembly_data_length,
328 server->smbd_conn->reassembly_queue_length);
329 seq_printf(m, "\nCurrent Credits send_credits: %x "
330 "receive_credits: %x receive_credit_target: %x",
331 atomic_read(&server->smbd_conn->send_credits),
332 atomic_read(&server->smbd_conn->receive_credits),
333 server->smbd_conn->receive_credit_target);
334 seq_printf(m, "\nPending send_pending: %x ",
335 atomic_read(&server->smbd_conn->send_pending));
336 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
337 "count_empty_packet_queue: %x",
338 server->smbd_conn->count_receive_queue,
339 server->smbd_conn->count_empty_packet_queue);
340 seq_printf(m, "\nMR responder_resources: %x "
341 "max_frmr_depth: %x mr_type: %x",
342 server->smbd_conn->responder_resources,
343 server->smbd_conn->max_frmr_depth,
344 server->smbd_conn->mr_type);
345 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
346 atomic_read(&server->smbd_conn->mr_ready_count),
347 atomic_read(&server->smbd_conn->mr_used_count));
350 seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
351 server->credits, server->dialect);
352 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
353 seq_printf(m, " COMPRESS_LZNT1");
354 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
355 seq_printf(m, " COMPRESS_LZ77");
356 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
357 seq_printf(m, " COMPRESS_LZ77_HUFF");
359 seq_printf(m, " signed");
360 if (server->posix_ext_supported)
361 seq_printf(m, " posix");
362 if (server->nosharesock)
363 seq_printf(m, " nosharesock");
366 seq_printf(m, "\nRDMA ");
367 seq_printf(m, "\nTCP status: %d Instance: %d"
368 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
370 server->reconnect_instance,
372 server->sec_mode, in_flight(server));
374 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
375 atomic_read(&server->in_send),
376 atomic_read(&server->num_waiters));
378 seq_printf(m, "\n\n\tSessions: ");
380 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
382 if ((ses->serverDomain == NULL) ||
383 (ses->serverOS == NULL) ||
384 (ses->serverNOS == NULL)) {
385 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
386 i, ses->ip_addr, ses->ses_count,
387 ses->capabilities, ses->ses_status);
388 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
389 seq_printf(m, "Guest ");
390 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
391 seq_printf(m, "Anonymous ");
394 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s "
395 "\n\tNOS: %s\tCapability: 0x%x"
396 "\n\tSMB session status: %d ",
397 i, ses->ip_addr, ses->serverDomain,
398 ses->ses_count, ses->serverOS, ses->serverNOS,
399 ses->capabilities, ses->ses_status);
402 seq_printf(m, "\n\tSecurity type: %s ",
403 get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
405 /* dump session id helpful for use with network trace */
406 seq_printf(m, " SessionId: 0x%llx", ses->Suid);
407 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
408 seq_puts(m, " encrypted");
410 seq_puts(m, " signed");
412 seq_printf(m, "\n\tUser: %d Cred User: %d",
413 from_kuid(&init_user_ns, ses->linux_uid),
414 from_kuid(&init_user_ns, ses->cred_uid));
416 spin_lock(&ses->chan_lock);
417 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0))
418 seq_puts(m, "\tPrimary channel: DISCONNECTED ");
419 if (CIFS_CHAN_IN_RECONNECT(ses, 0))
420 seq_puts(m, "\t[RECONNECTING] ");
422 if (ses->chan_count > 1) {
423 seq_printf(m, "\n\n\tExtra Channels: %zu ",
425 for (j = 1; j < ses->chan_count; j++) {
426 cifs_dump_channel(m, j, &ses->chans[j]);
427 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j))
428 seq_puts(m, "\tDISCONNECTED ");
429 if (CIFS_CHAN_IN_RECONNECT(ses, j))
430 seq_puts(m, "\t[RECONNECTING] ");
433 spin_unlock(&ses->chan_lock);
435 seq_puts(m, "\n\n\tShares: ");
438 seq_printf(m, "\n\t%d) IPC: ", j);
440 cifs_debug_tcon(m, ses->tcon_ipc);
442 seq_puts(m, "none\n");
444 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
446 seq_printf(m, "\n\t%d) ", j);
447 cifs_debug_tcon(m, tcon);
450 spin_lock(&ses->iface_lock);
451 if (ses->iface_count)
452 seq_printf(m, "\n\n\tServer interfaces: %zu",
455 list_for_each_entry(iface, &ses->iface_list,
457 seq_printf(m, "\n\t%d)", ++j);
458 cifs_dump_iface(m, iface);
459 if (is_ses_using_iface(ses, iface))
460 seq_puts(m, "\t\t[CONNECTED]\n");
462 spin_unlock(&ses->iface_lock);
464 seq_puts(m, "\n\n\tMIDs: ");
465 spin_lock(&ses->chan_lock);
466 for (j = 0; j < ses->chan_count; j++) {
467 chan_server = ses->chans[j].server;
471 if (list_empty(&chan_server->pending_mid_q))
474 seq_printf(m, "\n\tServer ConnectionId: 0x%llx",
475 chan_server->conn_id);
476 spin_lock(&chan_server->mid_lock);
477 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) {
478 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu",
479 mid_entry->mid_state,
480 le16_to_cpu(mid_entry->command),
482 mid_entry->callback_data,
485 spin_unlock(&chan_server->mid_lock);
487 spin_unlock(&ses->chan_lock);
488 seq_puts(m, "\n--\n");
491 seq_printf(m, "\n\t\t[NONE]");
494 seq_printf(m, "\n\t[NONE]");
496 spin_unlock(&cifs_tcp_ses_lock);
500 /* BB add code to dump additional info such as TCP session info now */
504 static ssize_t cifs_stats_proc_write(struct file *file,
505 const char __user *buffer, size_t count, loff_t *ppos)
509 struct TCP_Server_Info *server;
510 struct cifs_ses *ses;
511 struct cifs_tcon *tcon;
513 rc = kstrtobool_from_user(buffer, count, &bv);
515 #ifdef CONFIG_CIFS_STATS2
518 atomic_set(&total_buf_alloc_count, 0);
519 atomic_set(&total_small_buf_alloc_count, 0);
520 #endif /* CONFIG_CIFS_STATS2 */
521 atomic_set(&tcpSesReconnectCount, 0);
522 atomic_set(&tconInfoReconnectCount, 0);
524 spin_lock(&GlobalMid_Lock);
525 GlobalMaxActiveXid = 0;
526 GlobalCurrentXid = 0;
527 spin_unlock(&GlobalMid_Lock);
528 spin_lock(&cifs_tcp_ses_lock);
529 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
530 server->max_in_flight = 0;
531 #ifdef CONFIG_CIFS_STATS2
532 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
533 atomic_set(&server->num_cmds[i], 0);
534 atomic_set(&server->smb2slowcmd[i], 0);
535 server->time_per_cmd[i] = 0;
536 server->slowest_cmd[i] = 0;
537 server->fastest_cmd[0] = 0;
539 #endif /* CONFIG_CIFS_STATS2 */
540 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
541 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
542 atomic_set(&tcon->num_smbs_sent, 0);
543 spin_lock(&tcon->stat_lock);
544 tcon->bytes_read = 0;
545 tcon->bytes_written = 0;
546 spin_unlock(&tcon->stat_lock);
547 if (server->ops->clear_stats)
548 server->ops->clear_stats(tcon);
552 spin_unlock(&cifs_tcp_ses_lock);
560 static int cifs_stats_proc_show(struct seq_file *m, void *v)
563 #ifdef CONFIG_CIFS_STATS2
566 struct TCP_Server_Info *server;
567 struct cifs_ses *ses;
568 struct cifs_tcon *tcon;
570 seq_printf(m, "Resources in use\nCIFS Session: %d\n",
571 sesInfoAllocCount.counter);
572 seq_printf(m, "Share (unique mount targets): %d\n",
573 tconInfoAllocCount.counter);
574 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
575 buf_alloc_count.counter,
576 cifs_min_rcv + tcpSesAllocCount.counter);
577 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
578 small_buf_alloc_count.counter, cifs_min_small);
579 #ifdef CONFIG_CIFS_STATS2
580 seq_printf(m, "Total Large %d Small %d Allocations\n",
581 atomic_read(&total_buf_alloc_count),
582 atomic_read(&total_small_buf_alloc_count));
583 #endif /* CONFIG_CIFS_STATS2 */
585 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count));
587 "\n%d session %d share reconnects\n",
588 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
591 "Total vfs operations: %d maximum at one time: %d\n",
592 GlobalCurrentXid, GlobalMaxActiveXid);
595 spin_lock(&cifs_tcp_ses_lock);
596 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
597 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
598 #ifdef CONFIG_CIFS_STATS2
599 seq_puts(m, "\nTotal time spent processing by command. Time ");
600 seq_printf(m, "units are jiffies (%d per second)\n", HZ);
601 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
602 seq_puts(m, " --------\t------\t----------\t-------\t-------\n");
603 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
604 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j,
605 atomic_read(&server->num_cmds[j]),
606 server->time_per_cmd[j],
607 server->fastest_cmd[j],
608 server->slowest_cmd[j]);
609 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
610 if (atomic_read(&server->smb2slowcmd[j]))
611 seq_printf(m, " %d slow responses from %s for command %d\n",
612 atomic_read(&server->smb2slowcmd[j]),
613 server->hostname, j);
615 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
616 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
618 seq_printf(m, "\n%d) %s", i, tcon->tree_name);
619 if (tcon->need_reconnect)
620 seq_puts(m, "\tDISCONNECTED ");
621 seq_printf(m, "\nSMBs: %d",
622 atomic_read(&tcon->num_smbs_sent));
623 if (server->ops->print_stats)
624 server->ops->print_stats(m, tcon);
628 spin_unlock(&cifs_tcp_ses_lock);
634 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
636 return single_open(file, cifs_stats_proc_show, NULL);
639 static const struct proc_ops cifs_stats_proc_ops = {
640 .proc_open = cifs_stats_proc_open,
641 .proc_read = seq_read,
642 .proc_lseek = seq_lseek,
643 .proc_release = single_release,
644 .proc_write = cifs_stats_proc_write,
647 #ifdef CONFIG_CIFS_SMB_DIRECT
648 #define PROC_FILE_DEFINE(name) \
649 static ssize_t name##_write(struct file *file, const char __user *buffer, \
650 size_t count, loff_t *ppos) \
653 rc = kstrtoint_from_user(buffer, count, 10, & name); \
658 static int name##_proc_show(struct seq_file *m, void *v) \
660 seq_printf(m, "%d\n", name ); \
663 static int name##_open(struct inode *inode, struct file *file) \
665 return single_open(file, name##_proc_show, NULL); \
668 static const struct proc_ops cifs_##name##_proc_fops = { \
669 .proc_open = name##_open, \
670 .proc_read = seq_read, \
671 .proc_lseek = seq_lseek, \
672 .proc_release = single_release, \
673 .proc_write = name##_write, \
676 PROC_FILE_DEFINE(rdma_readwrite_threshold);
677 PROC_FILE_DEFINE(smbd_max_frmr_depth);
678 PROC_FILE_DEFINE(smbd_keep_alive_interval);
679 PROC_FILE_DEFINE(smbd_max_receive_size);
680 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
681 PROC_FILE_DEFINE(smbd_max_send_size);
682 PROC_FILE_DEFINE(smbd_send_credit_target);
683 PROC_FILE_DEFINE(smbd_receive_credit_max);
686 static struct proc_dir_entry *proc_fs_cifs;
687 static const struct proc_ops cifsFYI_proc_ops;
688 static const struct proc_ops cifs_lookup_cache_proc_ops;
689 static const struct proc_ops traceSMB_proc_ops;
690 static const struct proc_ops cifs_security_flags_proc_ops;
691 static const struct proc_ops cifs_linux_ext_proc_ops;
692 static const struct proc_ops cifs_mount_params_proc_ops;
697 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
698 if (proc_fs_cifs == NULL)
701 proc_create_single("DebugData", 0, proc_fs_cifs,
702 cifs_debug_data_proc_show);
704 proc_create_single("open_files", 0400, proc_fs_cifs,
705 cifs_debug_files_proc_show);
707 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
708 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
709 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
710 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
711 &cifs_linux_ext_proc_ops);
712 proc_create("SecurityFlags", 0644, proc_fs_cifs,
713 &cifs_security_flags_proc_ops);
714 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
715 &cifs_lookup_cache_proc_ops);
717 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops);
719 #ifdef CONFIG_CIFS_DFS_UPCALL
720 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
723 #ifdef CONFIG_CIFS_SMB_DIRECT
724 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
725 &cifs_rdma_readwrite_threshold_proc_fops);
726 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
727 &cifs_smbd_max_frmr_depth_proc_fops);
728 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
729 &cifs_smbd_keep_alive_interval_proc_fops);
730 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
731 &cifs_smbd_max_receive_size_proc_fops);
732 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
733 &cifs_smbd_max_fragmented_recv_size_proc_fops);
734 proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
735 &cifs_smbd_max_send_size_proc_fops);
736 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
737 &cifs_smbd_send_credit_target_proc_fops);
738 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
739 &cifs_smbd_receive_credit_max_proc_fops);
744 cifs_proc_clean(void)
746 if (proc_fs_cifs == NULL)
749 remove_proc_entry("DebugData", proc_fs_cifs);
750 remove_proc_entry("open_files", proc_fs_cifs);
751 remove_proc_entry("cifsFYI", proc_fs_cifs);
752 remove_proc_entry("traceSMB", proc_fs_cifs);
753 remove_proc_entry("Stats", proc_fs_cifs);
754 remove_proc_entry("SecurityFlags", proc_fs_cifs);
755 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
756 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
757 remove_proc_entry("mount_params", proc_fs_cifs);
759 #ifdef CONFIG_CIFS_DFS_UPCALL
760 remove_proc_entry("dfscache", proc_fs_cifs);
762 #ifdef CONFIG_CIFS_SMB_DIRECT
763 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
764 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
765 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
766 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
767 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
768 remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
769 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
770 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
772 remove_proc_entry("fs/cifs", NULL);
775 static int cifsFYI_proc_show(struct seq_file *m, void *v)
777 seq_printf(m, "%d\n", cifsFYI);
781 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
783 return single_open(file, cifsFYI_proc_show, NULL);
786 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
787 size_t count, loff_t *ppos)
789 char c[2] = { '\0' };
793 rc = get_user(c[0], buffer);
796 if (strtobool(c, &bv) == 0)
798 else if ((c[0] > '1') && (c[0] <= '9'))
799 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
806 static const struct proc_ops cifsFYI_proc_ops = {
807 .proc_open = cifsFYI_proc_open,
808 .proc_read = seq_read,
809 .proc_lseek = seq_lseek,
810 .proc_release = single_release,
811 .proc_write = cifsFYI_proc_write,
814 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
816 seq_printf(m, "%d\n", linuxExtEnabled);
820 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
822 return single_open(file, cifs_linux_ext_proc_show, NULL);
825 static ssize_t cifs_linux_ext_proc_write(struct file *file,
826 const char __user *buffer, size_t count, loff_t *ppos)
830 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
837 static const struct proc_ops cifs_linux_ext_proc_ops = {
838 .proc_open = cifs_linux_ext_proc_open,
839 .proc_read = seq_read,
840 .proc_lseek = seq_lseek,
841 .proc_release = single_release,
842 .proc_write = cifs_linux_ext_proc_write,
845 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
847 seq_printf(m, "%d\n", lookupCacheEnabled);
851 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
853 return single_open(file, cifs_lookup_cache_proc_show, NULL);
856 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
857 const char __user *buffer, size_t count, loff_t *ppos)
861 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
868 static const struct proc_ops cifs_lookup_cache_proc_ops = {
869 .proc_open = cifs_lookup_cache_proc_open,
870 .proc_read = seq_read,
871 .proc_lseek = seq_lseek,
872 .proc_release = single_release,
873 .proc_write = cifs_lookup_cache_proc_write,
876 static int traceSMB_proc_show(struct seq_file *m, void *v)
878 seq_printf(m, "%d\n", traceSMB);
882 static int traceSMB_proc_open(struct inode *inode, struct file *file)
884 return single_open(file, traceSMB_proc_show, NULL);
887 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
888 size_t count, loff_t *ppos)
892 rc = kstrtobool_from_user(buffer, count, &traceSMB);
899 static const struct proc_ops traceSMB_proc_ops = {
900 .proc_open = traceSMB_proc_open,
901 .proc_read = seq_read,
902 .proc_lseek = seq_lseek,
903 .proc_release = single_release,
904 .proc_write = traceSMB_proc_write,
907 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
909 seq_printf(m, "0x%x\n", global_secflags);
913 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
915 return single_open(file, cifs_security_flags_proc_show, NULL);
919 * Ensure that if someone sets a MUST flag, that we disable all other MAY
920 * flags except for the ones corresponding to the given MUST flag. If there are
921 * multiple MUST flags, then try to prefer more secure ones.
924 cifs_security_flags_handle_must_flags(unsigned int *flags)
926 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
928 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
929 *flags = CIFSSEC_MUST_KRB5;
930 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
931 *flags = CIFSSEC_MUST_NTLMSSP;
932 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
933 *flags = CIFSSEC_MUST_NTLMV2;
938 static ssize_t cifs_security_flags_proc_write(struct file *file,
939 const char __user *buffer, size_t count, loff_t *ppos)
943 char flags_string[12];
946 if ((count < 1) || (count > 11))
949 memset(flags_string, 0, 12);
951 if (copy_from_user(flags_string, buffer, count))
955 /* single char or single char followed by null */
956 if (strtobool(flags_string, &bv) == 0) {
957 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
959 } else if (!isdigit(flags_string[0])) {
960 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
966 /* else we have a number */
967 rc = kstrtouint(flags_string, 0, &flags);
969 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
974 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
977 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
981 if (flags & ~CIFSSEC_MASK) {
982 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
983 flags & ~CIFSSEC_MASK);
987 cifs_security_flags_handle_must_flags(&flags);
989 /* flags look ok - update the global security flags for cifs module */
990 global_secflags = flags;
991 if (global_secflags & CIFSSEC_MUST_SIGN) {
992 /* requiring signing implies signing is allowed */
993 global_secflags |= CIFSSEC_MAY_SIGN;
994 cifs_dbg(FYI, "packet signing now required\n");
995 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
996 cifs_dbg(FYI, "packet signing disabled\n");
998 /* BB should we turn on MAY flags for other MUST options? */
1002 static const struct proc_ops cifs_security_flags_proc_ops = {
1003 .proc_open = cifs_security_flags_proc_open,
1004 .proc_read = seq_read,
1005 .proc_lseek = seq_lseek,
1006 .proc_release = single_release,
1007 .proc_write = cifs_security_flags_proc_write,
1010 /* To make it easier to debug, can help to show mount params */
1011 static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
1013 const struct fs_parameter_spec *p;
1016 for (p = smb3_fs_parameters; p->name; p++) {
1017 /* cannot use switch with pointers... */
1019 if (p->flags == fs_param_neg_with_no)
1023 } else if (p->type == fs_param_is_bool)
1025 else if (p->type == fs_param_is_u32)
1027 else if (p->type == fs_param_is_u64)
1029 else if (p->type == fs_param_is_string)
1034 seq_printf(m, "%s:%s\n", p->name, type);
1040 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
1042 return single_open(file, cifs_mount_params_proc_show, NULL);
1045 static const struct proc_ops cifs_mount_params_proc_ops = {
1046 .proc_open = cifs_mount_params_proc_open,
1047 .proc_read = seq_read,
1048 .proc_lseek = seq_lseek,
1049 .proc_release = single_release,
1050 /* No need for write for now */
1051 /* .proc_write = cifs_mount_params_proc_write, */
1055 inline void cifs_proc_init(void)
1059 inline void cifs_proc_clean(void)
1062 #endif /* PROC_FS */