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 = (struct smb_hdr *)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, server));
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(&GlobalMid_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(&GlobalMid_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->treeName, 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);
167 static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
169 struct list_head *tmp, *tmp1, *tmp2;
170 struct TCP_Server_Info *server;
171 struct cifs_ses *ses;
172 struct cifs_tcon *tcon;
173 struct cifsFileInfo *cfile;
175 seq_puts(m, "# Version:1\n");
176 seq_puts(m, "# Format:\n");
177 seq_puts(m, "# <tree id> <persistent fid> <flags> <count> <pid> <uid>");
178 #ifdef CONFIG_CIFS_DEBUG2
179 seq_printf(m, " <filename> <mid>\n");
181 seq_printf(m, " <filename>\n");
182 #endif /* CIFS_DEBUG2 */
183 spin_lock(&cifs_tcp_ses_lock);
184 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
185 list_for_each(tmp, &server->smb_ses_list) {
186 ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
187 list_for_each(tmp1, &ses->tcon_list) {
188 tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
189 spin_lock(&tcon->open_file_lock);
190 list_for_each(tmp2, &tcon->openFileList) {
191 cfile = list_entry(tmp2, struct cifsFileInfo,
194 "0x%x 0x%llx 0x%x %d %d %d %pd",
196 cfile->fid.persistent_fid,
200 from_kuid(&init_user_ns, cfile->uid),
202 #ifdef CONFIG_CIFS_DEBUG2
203 seq_printf(m, " %llu\n", cfile->fid.mid);
206 #endif /* CIFS_DEBUG2 */
208 spin_unlock(&tcon->open_file_lock);
212 spin_unlock(&cifs_tcp_ses_lock);
217 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
219 struct list_head *tmp2, *tmp3;
220 struct mid_q_entry *mid_entry;
221 struct TCP_Server_Info *server;
222 struct cifs_ses *ses;
223 struct cifs_tcon *tcon;
227 "Display Internal CIFS Data Structures for Debugging\n"
228 "---------------------------------------------------\n");
229 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
230 seq_printf(m, "Features:");
231 #ifdef CONFIG_CIFS_DFS_UPCALL
232 seq_printf(m, " DFS");
234 #ifdef CONFIG_CIFS_FSCACHE
235 seq_printf(m, ",FSCACHE");
237 #ifdef CONFIG_CIFS_SMB_DIRECT
238 seq_printf(m, ",SMB_DIRECT");
240 #ifdef CONFIG_CIFS_STATS2
241 seq_printf(m, ",STATS2");
243 seq_printf(m, ",STATS");
245 #ifdef CONFIG_CIFS_DEBUG2
246 seq_printf(m, ",DEBUG2");
247 #elif defined(CONFIG_CIFS_DEBUG)
248 seq_printf(m, ",DEBUG");
250 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
251 seq_printf(m, ",ALLOW_INSECURE_LEGACY");
253 #ifdef CONFIG_CIFS_POSIX
254 seq_printf(m, ",CIFS_POSIX");
256 #ifdef CONFIG_CIFS_UPCALL
257 seq_printf(m, ",UPCALL(SPNEGO)");
259 #ifdef CONFIG_CIFS_XATTR
260 seq_printf(m, ",XATTR");
262 seq_printf(m, ",ACL");
263 #ifdef CONFIG_CIFS_SWN_UPCALL
264 seq_puts(m, ",WITNESS");
267 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
268 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
270 seq_printf(m, "\nServers: ");
273 spin_lock(&cifs_tcp_ses_lock);
274 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
275 /* channel info will be printed as a part of sessions below */
276 if (CIFS_SERVER_IS_CHAN(server))
280 seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
283 if (server->hostname)
284 seq_printf(m, "Hostname: %s ", server->hostname);
285 #ifdef CONFIG_CIFS_SMB_DIRECT
289 if (!server->smbd_conn) {
290 seq_printf(m, "\nSMBDirect transport not available");
294 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
295 "transport status: %x",
296 server->smbd_conn->protocol,
297 server->smbd_conn->transport_status);
298 seq_printf(m, "\nConn receive_credit_max: %x "
299 "send_credit_target: %x max_send_size: %x",
300 server->smbd_conn->receive_credit_max,
301 server->smbd_conn->send_credit_target,
302 server->smbd_conn->max_send_size);
303 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
304 "max_fragmented_send_size: %x max_receive_size:%x",
305 server->smbd_conn->max_fragmented_recv_size,
306 server->smbd_conn->max_fragmented_send_size,
307 server->smbd_conn->max_receive_size);
308 seq_printf(m, "\nConn keep_alive_interval: %x "
309 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
310 server->smbd_conn->keep_alive_interval,
311 server->smbd_conn->max_readwrite_size,
312 server->smbd_conn->rdma_readwrite_threshold);
313 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
314 "count_put_receive_buffer: %x count_send_empty: %x",
315 server->smbd_conn->count_get_receive_buffer,
316 server->smbd_conn->count_put_receive_buffer,
317 server->smbd_conn->count_send_empty);
318 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
319 "count_enqueue_reassembly_queue: %x "
320 "count_dequeue_reassembly_queue: %x "
321 "fragment_reassembly_remaining: %x "
322 "reassembly_data_length: %x "
323 "reassembly_queue_length: %x",
324 server->smbd_conn->count_reassembly_queue,
325 server->smbd_conn->count_enqueue_reassembly_queue,
326 server->smbd_conn->count_dequeue_reassembly_queue,
327 server->smbd_conn->fragment_reassembly_remaining,
328 server->smbd_conn->reassembly_data_length,
329 server->smbd_conn->reassembly_queue_length);
330 seq_printf(m, "\nCurrent Credits send_credits: %x "
331 "receive_credits: %x receive_credit_target: %x",
332 atomic_read(&server->smbd_conn->send_credits),
333 atomic_read(&server->smbd_conn->receive_credits),
334 server->smbd_conn->receive_credit_target);
335 seq_printf(m, "\nPending send_pending: %x ",
336 atomic_read(&server->smbd_conn->send_pending));
337 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
338 "count_empty_packet_queue: %x",
339 server->smbd_conn->count_receive_queue,
340 server->smbd_conn->count_empty_packet_queue);
341 seq_printf(m, "\nMR responder_resources: %x "
342 "max_frmr_depth: %x mr_type: %x",
343 server->smbd_conn->responder_resources,
344 server->smbd_conn->max_frmr_depth,
345 server->smbd_conn->mr_type);
346 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
347 atomic_read(&server->smbd_conn->mr_ready_count),
348 atomic_read(&server->smbd_conn->mr_used_count));
351 seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
352 server->credits, server->dialect);
353 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
354 seq_printf(m, " COMPRESS_LZNT1");
355 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
356 seq_printf(m, " COMPRESS_LZ77");
357 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
358 seq_printf(m, " COMPRESS_LZ77_HUFF");
360 seq_printf(m, " signed");
361 if (server->posix_ext_supported)
362 seq_printf(m, " posix");
363 if (server->nosharesock)
364 seq_printf(m, " nosharesock");
367 seq_printf(m, "\nRDMA ");
368 seq_printf(m, "\nTCP status: %d Instance: %d"
369 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
371 server->reconnect_instance,
373 server->sec_mode, in_flight(server));
375 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
376 atomic_read(&server->in_send),
377 atomic_read(&server->num_waiters));
379 seq_printf(m, "\n\n\tSessions: ");
381 list_for_each(tmp2, &server->smb_ses_list) {
382 ses = list_entry(tmp2, struct cifs_ses,
385 if ((ses->serverDomain == NULL) ||
386 (ses->serverOS == NULL) ||
387 (ses->serverNOS == NULL)) {
388 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
389 i, ses->ip_addr, ses->ses_count,
390 ses->capabilities, ses->ses_status);
391 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
392 seq_printf(m, "Guest ");
393 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
394 seq_printf(m, "Anonymous ");
397 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s "
398 "\n\tNOS: %s\tCapability: 0x%x"
399 "\n\tSMB session status: %d ",
400 i, ses->ip_addr, ses->serverDomain,
401 ses->ses_count, ses->serverOS, ses->serverNOS,
402 ses->capabilities, ses->ses_status);
405 seq_printf(m, "\n\tSecurity type: %s ",
406 get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
408 /* dump session id helpful for use with network trace */
409 seq_printf(m, " SessionId: 0x%llx", ses->Suid);
410 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
411 seq_puts(m, " encrypted");
413 seq_puts(m, " signed");
415 seq_printf(m, "\n\tUser: %d Cred User: %d",
416 from_kuid(&init_user_ns, ses->linux_uid),
417 from_kuid(&init_user_ns, ses->cred_uid));
419 spin_lock(&ses->chan_lock);
420 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0))
421 seq_puts(m, "\tPrimary channel: DISCONNECTED ");
422 if (CIFS_CHAN_IN_RECONNECT(ses, 0))
423 seq_puts(m, "\t[RECONNECTING] ");
425 if (ses->chan_count > 1) {
426 seq_printf(m, "\n\n\tExtra Channels: %zu ",
428 for (j = 1; j < ses->chan_count; j++) {
429 cifs_dump_channel(m, j, &ses->chans[j]);
430 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j))
431 seq_puts(m, "\tDISCONNECTED ");
432 if (CIFS_CHAN_IN_RECONNECT(ses, j))
433 seq_puts(m, "\t[RECONNECTING] ");
436 spin_unlock(&ses->chan_lock);
438 seq_puts(m, "\n\n\tShares: ");
441 seq_printf(m, "\n\t%d) IPC: ", j);
443 cifs_debug_tcon(m, ses->tcon_ipc);
445 seq_puts(m, "none\n");
447 list_for_each(tmp3, &ses->tcon_list) {
448 tcon = list_entry(tmp3, struct cifs_tcon,
451 seq_printf(m, "\n\t%d) ", j);
452 cifs_debug_tcon(m, tcon);
455 spin_lock(&ses->iface_lock);
456 if (ses->iface_count)
457 seq_printf(m, "\n\n\tServer interfaces: %zu",
459 for (j = 0; j < ses->iface_count; j++) {
460 struct cifs_server_iface *iface;
462 iface = &ses->iface_list[j];
463 seq_printf(m, "\n\t%d)", j+1);
464 cifs_dump_iface(m, iface);
465 if (is_ses_using_iface(ses, iface))
466 seq_puts(m, "\t\t[CONNECTED]\n");
468 spin_unlock(&ses->iface_lock);
471 seq_printf(m, "\n\t\t[NONE]");
473 seq_puts(m, "\n\n\tMIDs: ");
474 spin_lock(&GlobalMid_Lock);
475 list_for_each(tmp3, &server->pending_mid_q) {
476 mid_entry = list_entry(tmp3, struct mid_q_entry,
478 seq_printf(m, "\n\tState: %d com: %d pid:"
479 " %d cbdata: %p mid %llu\n",
480 mid_entry->mid_state,
481 le16_to_cpu(mid_entry->command),
483 mid_entry->callback_data,
486 spin_unlock(&GlobalMid_Lock);
487 seq_printf(m, "\n--\n");
490 seq_printf(m, "\n\t[NONE]");
492 spin_unlock(&cifs_tcp_ses_lock);
496 /* BB add code to dump additional info such as TCP session info now */
500 static ssize_t cifs_stats_proc_write(struct file *file,
501 const char __user *buffer, size_t count, loff_t *ppos)
505 struct list_head *tmp1, *tmp2, *tmp3;
506 struct TCP_Server_Info *server;
507 struct cifs_ses *ses;
508 struct cifs_tcon *tcon;
510 rc = kstrtobool_from_user(buffer, count, &bv);
512 #ifdef CONFIG_CIFS_STATS2
515 atomic_set(&totBufAllocCount, 0);
516 atomic_set(&totSmBufAllocCount, 0);
517 #endif /* CONFIG_CIFS_STATS2 */
518 atomic_set(&tcpSesReconnectCount, 0);
519 atomic_set(&tconInfoReconnectCount, 0);
521 spin_lock(&GlobalMid_Lock);
522 GlobalMaxActiveXid = 0;
523 GlobalCurrentXid = 0;
524 spin_unlock(&GlobalMid_Lock);
525 spin_lock(&cifs_tcp_ses_lock);
526 list_for_each(tmp1, &cifs_tcp_ses_list) {
527 server = list_entry(tmp1, struct TCP_Server_Info,
529 server->max_in_flight = 0;
530 #ifdef CONFIG_CIFS_STATS2
531 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
532 atomic_set(&server->num_cmds[i], 0);
533 atomic_set(&server->smb2slowcmd[i], 0);
534 server->time_per_cmd[i] = 0;
535 server->slowest_cmd[i] = 0;
536 server->fastest_cmd[0] = 0;
538 #endif /* CONFIG_CIFS_STATS2 */
539 list_for_each(tmp2, &server->smb_ses_list) {
540 ses = list_entry(tmp2, struct cifs_ses,
542 list_for_each(tmp3, &ses->tcon_list) {
543 tcon = list_entry(tmp3,
546 atomic_set(&tcon->num_smbs_sent, 0);
547 spin_lock(&tcon->stat_lock);
548 tcon->bytes_read = 0;
549 tcon->bytes_written = 0;
550 spin_unlock(&tcon->stat_lock);
551 if (server->ops->clear_stats)
552 server->ops->clear_stats(tcon);
556 spin_unlock(&cifs_tcp_ses_lock);
564 static int cifs_stats_proc_show(struct seq_file *m, void *v)
567 #ifdef CONFIG_CIFS_STATS2
570 struct list_head *tmp2, *tmp3;
571 struct TCP_Server_Info *server;
572 struct cifs_ses *ses;
573 struct cifs_tcon *tcon;
575 seq_printf(m, "Resources in use\nCIFS Session: %d\n",
576 sesInfoAllocCount.counter);
577 seq_printf(m, "Share (unique mount targets): %d\n",
578 tconInfoAllocCount.counter);
579 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
580 bufAllocCount.counter,
581 cifs_min_rcv + tcpSesAllocCount.counter);
582 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
583 smBufAllocCount.counter, cifs_min_small);
584 #ifdef CONFIG_CIFS_STATS2
585 seq_printf(m, "Total Large %d Small %d Allocations\n",
586 atomic_read(&totBufAllocCount),
587 atomic_read(&totSmBufAllocCount));
588 #endif /* CONFIG_CIFS_STATS2 */
590 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
592 "\n%d session %d share reconnects\n",
593 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
596 "Total vfs operations: %d maximum at one time: %d\n",
597 GlobalCurrentXid, GlobalMaxActiveXid);
600 spin_lock(&cifs_tcp_ses_lock);
601 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
602 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
603 #ifdef CONFIG_CIFS_STATS2
604 seq_puts(m, "\nTotal time spent processing by command. Time ");
605 seq_printf(m, "units are jiffies (%d per second)\n", HZ);
606 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
607 seq_puts(m, " --------\t------\t----------\t-------\t-------\n");
608 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
609 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j,
610 atomic_read(&server->num_cmds[j]),
611 server->time_per_cmd[j],
612 server->fastest_cmd[j],
613 server->slowest_cmd[j]);
614 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
615 if (atomic_read(&server->smb2slowcmd[j]))
616 seq_printf(m, " %d slow responses from %s for command %d\n",
617 atomic_read(&server->smb2slowcmd[j]),
618 server->hostname, j);
620 list_for_each(tmp2, &server->smb_ses_list) {
621 ses = list_entry(tmp2, struct cifs_ses,
623 list_for_each(tmp3, &ses->tcon_list) {
624 tcon = list_entry(tmp3,
628 seq_printf(m, "\n%d) %s", i, tcon->treeName);
629 if (tcon->need_reconnect)
630 seq_puts(m, "\tDISCONNECTED ");
631 seq_printf(m, "\nSMBs: %d",
632 atomic_read(&tcon->num_smbs_sent));
633 if (server->ops->print_stats)
634 server->ops->print_stats(m, tcon);
638 spin_unlock(&cifs_tcp_ses_lock);
644 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
646 return single_open(file, cifs_stats_proc_show, NULL);
649 static const struct proc_ops cifs_stats_proc_ops = {
650 .proc_open = cifs_stats_proc_open,
651 .proc_read = seq_read,
652 .proc_lseek = seq_lseek,
653 .proc_release = single_release,
654 .proc_write = cifs_stats_proc_write,
657 #ifdef CONFIG_CIFS_SMB_DIRECT
658 #define PROC_FILE_DEFINE(name) \
659 static ssize_t name##_write(struct file *file, const char __user *buffer, \
660 size_t count, loff_t *ppos) \
663 rc = kstrtoint_from_user(buffer, count, 10, & name); \
668 static int name##_proc_show(struct seq_file *m, void *v) \
670 seq_printf(m, "%d\n", name ); \
673 static int name##_open(struct inode *inode, struct file *file) \
675 return single_open(file, name##_proc_show, NULL); \
678 static const struct proc_ops cifs_##name##_proc_fops = { \
679 .proc_open = name##_open, \
680 .proc_read = seq_read, \
681 .proc_lseek = seq_lseek, \
682 .proc_release = single_release, \
683 .proc_write = name##_write, \
686 PROC_FILE_DEFINE(rdma_readwrite_threshold);
687 PROC_FILE_DEFINE(smbd_max_frmr_depth);
688 PROC_FILE_DEFINE(smbd_keep_alive_interval);
689 PROC_FILE_DEFINE(smbd_max_receive_size);
690 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
691 PROC_FILE_DEFINE(smbd_max_send_size);
692 PROC_FILE_DEFINE(smbd_send_credit_target);
693 PROC_FILE_DEFINE(smbd_receive_credit_max);
696 static struct proc_dir_entry *proc_fs_cifs;
697 static const struct proc_ops cifsFYI_proc_ops;
698 static const struct proc_ops cifs_lookup_cache_proc_ops;
699 static const struct proc_ops traceSMB_proc_ops;
700 static const struct proc_ops cifs_security_flags_proc_ops;
701 static const struct proc_ops cifs_linux_ext_proc_ops;
702 static const struct proc_ops cifs_mount_params_proc_ops;
707 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
708 if (proc_fs_cifs == NULL)
711 proc_create_single("DebugData", 0, proc_fs_cifs,
712 cifs_debug_data_proc_show);
714 proc_create_single("open_files", 0400, proc_fs_cifs,
715 cifs_debug_files_proc_show);
717 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
718 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
719 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
720 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
721 &cifs_linux_ext_proc_ops);
722 proc_create("SecurityFlags", 0644, proc_fs_cifs,
723 &cifs_security_flags_proc_ops);
724 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
725 &cifs_lookup_cache_proc_ops);
727 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops);
729 #ifdef CONFIG_CIFS_DFS_UPCALL
730 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
733 #ifdef CONFIG_CIFS_SMB_DIRECT
734 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
735 &cifs_rdma_readwrite_threshold_proc_fops);
736 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
737 &cifs_smbd_max_frmr_depth_proc_fops);
738 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
739 &cifs_smbd_keep_alive_interval_proc_fops);
740 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
741 &cifs_smbd_max_receive_size_proc_fops);
742 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
743 &cifs_smbd_max_fragmented_recv_size_proc_fops);
744 proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
745 &cifs_smbd_max_send_size_proc_fops);
746 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
747 &cifs_smbd_send_credit_target_proc_fops);
748 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
749 &cifs_smbd_receive_credit_max_proc_fops);
754 cifs_proc_clean(void)
756 if (proc_fs_cifs == NULL)
759 remove_proc_entry("DebugData", proc_fs_cifs);
760 remove_proc_entry("open_files", proc_fs_cifs);
761 remove_proc_entry("cifsFYI", proc_fs_cifs);
762 remove_proc_entry("traceSMB", proc_fs_cifs);
763 remove_proc_entry("Stats", proc_fs_cifs);
764 remove_proc_entry("SecurityFlags", proc_fs_cifs);
765 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
766 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
767 remove_proc_entry("mount_params", proc_fs_cifs);
769 #ifdef CONFIG_CIFS_DFS_UPCALL
770 remove_proc_entry("dfscache", proc_fs_cifs);
772 #ifdef CONFIG_CIFS_SMB_DIRECT
773 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
774 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
775 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
776 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
777 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
778 remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
779 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
780 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
782 remove_proc_entry("fs/cifs", NULL);
785 static int cifsFYI_proc_show(struct seq_file *m, void *v)
787 seq_printf(m, "%d\n", cifsFYI);
791 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
793 return single_open(file, cifsFYI_proc_show, NULL);
796 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
797 size_t count, loff_t *ppos)
799 char c[2] = { '\0' };
803 rc = get_user(c[0], buffer);
806 if (strtobool(c, &bv) == 0)
808 else if ((c[0] > '1') && (c[0] <= '9'))
809 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
816 static const struct proc_ops cifsFYI_proc_ops = {
817 .proc_open = cifsFYI_proc_open,
818 .proc_read = seq_read,
819 .proc_lseek = seq_lseek,
820 .proc_release = single_release,
821 .proc_write = cifsFYI_proc_write,
824 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
826 seq_printf(m, "%d\n", linuxExtEnabled);
830 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
832 return single_open(file, cifs_linux_ext_proc_show, NULL);
835 static ssize_t cifs_linux_ext_proc_write(struct file *file,
836 const char __user *buffer, size_t count, loff_t *ppos)
840 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
847 static const struct proc_ops cifs_linux_ext_proc_ops = {
848 .proc_open = cifs_linux_ext_proc_open,
849 .proc_read = seq_read,
850 .proc_lseek = seq_lseek,
851 .proc_release = single_release,
852 .proc_write = cifs_linux_ext_proc_write,
855 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
857 seq_printf(m, "%d\n", lookupCacheEnabled);
861 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
863 return single_open(file, cifs_lookup_cache_proc_show, NULL);
866 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
867 const char __user *buffer, size_t count, loff_t *ppos)
871 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
878 static const struct proc_ops cifs_lookup_cache_proc_ops = {
879 .proc_open = cifs_lookup_cache_proc_open,
880 .proc_read = seq_read,
881 .proc_lseek = seq_lseek,
882 .proc_release = single_release,
883 .proc_write = cifs_lookup_cache_proc_write,
886 static int traceSMB_proc_show(struct seq_file *m, void *v)
888 seq_printf(m, "%d\n", traceSMB);
892 static int traceSMB_proc_open(struct inode *inode, struct file *file)
894 return single_open(file, traceSMB_proc_show, NULL);
897 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
898 size_t count, loff_t *ppos)
902 rc = kstrtobool_from_user(buffer, count, &traceSMB);
909 static const struct proc_ops traceSMB_proc_ops = {
910 .proc_open = traceSMB_proc_open,
911 .proc_read = seq_read,
912 .proc_lseek = seq_lseek,
913 .proc_release = single_release,
914 .proc_write = traceSMB_proc_write,
917 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
919 seq_printf(m, "0x%x\n", global_secflags);
923 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
925 return single_open(file, cifs_security_flags_proc_show, NULL);
929 * Ensure that if someone sets a MUST flag, that we disable all other MAY
930 * flags except for the ones corresponding to the given MUST flag. If there are
931 * multiple MUST flags, then try to prefer more secure ones.
934 cifs_security_flags_handle_must_flags(unsigned int *flags)
936 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
938 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
939 *flags = CIFSSEC_MUST_KRB5;
940 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
941 *flags = CIFSSEC_MUST_NTLMSSP;
942 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
943 *flags = CIFSSEC_MUST_NTLMV2;
948 static ssize_t cifs_security_flags_proc_write(struct file *file,
949 const char __user *buffer, size_t count, loff_t *ppos)
953 char flags_string[12];
956 if ((count < 1) || (count > 11))
959 memset(flags_string, 0, 12);
961 if (copy_from_user(flags_string, buffer, count))
965 /* single char or single char followed by null */
966 if (strtobool(flags_string, &bv) == 0) {
967 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
969 } else if (!isdigit(flags_string[0])) {
970 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
976 /* else we have a number */
977 rc = kstrtouint(flags_string, 0, &flags);
979 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
984 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
987 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
991 if (flags & ~CIFSSEC_MASK) {
992 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
993 flags & ~CIFSSEC_MASK);
997 cifs_security_flags_handle_must_flags(&flags);
999 /* flags look ok - update the global security flags for cifs module */
1000 global_secflags = flags;
1001 if (global_secflags & CIFSSEC_MUST_SIGN) {
1002 /* requiring signing implies signing is allowed */
1003 global_secflags |= CIFSSEC_MAY_SIGN;
1004 cifs_dbg(FYI, "packet signing now required\n");
1005 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
1006 cifs_dbg(FYI, "packet signing disabled\n");
1008 /* BB should we turn on MAY flags for other MUST options? */
1012 static const struct proc_ops cifs_security_flags_proc_ops = {
1013 .proc_open = cifs_security_flags_proc_open,
1014 .proc_read = seq_read,
1015 .proc_lseek = seq_lseek,
1016 .proc_release = single_release,
1017 .proc_write = cifs_security_flags_proc_write,
1020 /* To make it easier to debug, can help to show mount params */
1021 static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
1023 const struct fs_parameter_spec *p;
1026 for (p = smb3_fs_parameters; p->name; p++) {
1027 /* cannot use switch with pointers... */
1029 if (p->flags == fs_param_neg_with_no)
1033 } else if (p->type == fs_param_is_bool)
1035 else if (p->type == fs_param_is_u32)
1037 else if (p->type == fs_param_is_u64)
1039 else if (p->type == fs_param_is_string)
1044 seq_printf(m, "%s:%s\n", p->name, type);
1050 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
1052 return single_open(file, cifs_mount_params_proc_show, NULL);
1055 static const struct proc_ops cifs_mount_params_proc_ops = {
1056 .proc_open = cifs_mount_params_proc_open,
1057 .proc_read = seq_read,
1058 .proc_lseek = seq_lseek,
1059 .proc_release = single_release,
1060 /* No need for write for now */
1061 /* .proc_write = cifs_mount_params_proc_write, */
1065 inline void cifs_proc_init(void)
1069 inline void cifs_proc_clean(void)
1072 #endif /* PROC_FS */