1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) International Business Machines Corp., 2000,2005
7 * Modified by Steve French (sfrench@us.ibm.com)
10 #include <linux/string.h>
11 #include <linux/ctype.h>
12 #include <linux/module.h>
13 #include <linux/proc_fs.h>
14 #include <linux/uaccess.h>
17 #include "cifsproto.h"
18 #include "cifs_debug.h"
20 #ifdef CONFIG_CIFS_DFS_UPCALL
21 #include "dfs_cache.h"
23 #ifdef CONFIG_CIFS_SMB_DIRECT
24 #include "smbdirect.h"
28 cifs_dump_mem(char *label, void *data, int length)
30 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
31 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
35 void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
37 #ifdef CONFIG_CIFS_DEBUG2
38 struct smb_hdr *smb = (struct smb_hdr *)buf;
40 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
41 smb->Command, smb->Status.CifsError,
42 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
43 cifs_dbg(VFS, "smb buf %p len %u\n", smb,
44 server->ops->calc_smb_size(smb, server));
45 #endif /* CONFIG_CIFS_DEBUG2 */
48 void cifs_dump_mids(struct TCP_Server_Info *server)
50 #ifdef CONFIG_CIFS_DEBUG2
51 struct list_head *tmp;
52 struct mid_q_entry *mid_entry;
57 cifs_dbg(VFS, "Dump pending requests:\n");
58 spin_lock(&GlobalMid_Lock);
59 list_for_each(tmp, &server->pending_mid_q) {
60 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
61 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
63 le16_to_cpu(mid_entry->command),
65 mid_entry->callback_data,
67 #ifdef CONFIG_CIFS_STATS2
68 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
71 mid_entry->when_received,
74 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
75 mid_entry->multiRsp, mid_entry->multiEnd);
76 if (mid_entry->resp_buf) {
77 cifs_dump_detail(mid_entry->resp_buf, server);
78 cifs_dump_mem("existing buf: ",
79 mid_entry->resp_buf, 62);
82 spin_unlock(&GlobalMid_Lock);
83 #endif /* CONFIG_CIFS_DEBUG2 */
87 static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
89 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
91 seq_printf(m, "%s Mounts: %d ", tcon->treeName, tcon->tc_count);
92 if (tcon->nativeFileSystem)
93 seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
94 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
95 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
96 le32_to_cpu(tcon->fsAttrInfo.Attributes),
97 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
99 if (dev_type == FILE_DEVICE_DISK)
100 seq_puts(m, " type: DISK ");
101 else if (dev_type == FILE_DEVICE_CD_ROM)
102 seq_puts(m, " type: CDROM ");
104 seq_printf(m, " type: %d ", dev_type);
106 seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
109 (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
110 (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
111 seq_printf(m, " Encrypted");
113 seq_printf(m, " nocase");
115 seq_printf(m, " POSIX Extensions");
116 if (tcon->ses->server->ops->dump_share_caps)
117 tcon->ses->server->ops->dump_share_caps(m, tcon);
119 if (tcon->need_reconnect)
120 seq_puts(m, "\tDISCONNECTED ");
125 cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
127 struct TCP_Server_Info *server = chan->server;
129 seq_printf(m, "\t\tChannel %d Number of credits: %d Dialect 0x%x "
130 "TCP status: %d Instance: %d Local Users To Server: %d "
131 "SecMode: 0x%x Req On Wire: %d In Send: %d "
132 "In MaxReq Wait: %d\n",
137 server->reconnect_instance,
141 atomic_read(&server->in_send),
142 atomic_read(&server->num_waiters));
146 cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
148 struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
149 struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
151 seq_printf(m, "\tSpeed: %zu bps\n", iface->speed);
152 seq_puts(m, "\t\tCapabilities: ");
153 if (iface->rdma_capable)
154 seq_puts(m, "rdma ");
155 if (iface->rss_capable)
158 if (iface->sockaddr.ss_family == AF_INET)
159 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
160 else if (iface->sockaddr.ss_family == AF_INET6)
161 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
164 static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
166 struct list_head *stmp, *tmp, *tmp1, *tmp2;
167 struct TCP_Server_Info *server;
168 struct cifs_ses *ses;
169 struct cifs_tcon *tcon;
170 struct cifsFileInfo *cfile;
172 seq_puts(m, "# Version:1\n");
173 seq_puts(m, "# Format:\n");
174 seq_puts(m, "# <tree id> <persistent fid> <flags> <count> <pid> <uid>");
175 #ifdef CONFIG_CIFS_DEBUG2
176 seq_printf(m, " <filename> <mid>\n");
178 seq_printf(m, " <filename>\n");
179 #endif /* CIFS_DEBUG2 */
180 spin_lock(&cifs_tcp_ses_lock);
181 list_for_each(stmp, &cifs_tcp_ses_list) {
182 server = list_entry(stmp, struct TCP_Server_Info,
184 list_for_each(tmp, &server->smb_ses_list) {
185 ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
186 list_for_each(tmp1, &ses->tcon_list) {
187 tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
188 spin_lock(&tcon->open_file_lock);
189 list_for_each(tmp2, &tcon->openFileList) {
190 cfile = list_entry(tmp2, struct cifsFileInfo,
193 "0x%x 0x%llx 0x%x %d %d %d %s",
195 cfile->fid.persistent_fid,
199 from_kuid(&init_user_ns, cfile->uid),
200 cfile->dentry->d_name.name);
201 #ifdef CONFIG_CIFS_DEBUG2
202 seq_printf(m, " 0x%llx\n", cfile->fid.mid);
205 #endif /* CIFS_DEBUG2 */
207 spin_unlock(&tcon->open_file_lock);
211 spin_unlock(&cifs_tcp_ses_lock);
216 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
218 struct list_head *tmp1, *tmp2, *tmp3;
219 struct mid_q_entry *mid_entry;
220 struct TCP_Server_Info *server;
221 struct cifs_ses *ses;
222 struct cifs_tcon *tcon;
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_WEAK_PW_HASH
253 seq_printf(m, ",WEAK_PW_HASH");
255 #ifdef CONFIG_CIFS_POSIX
256 seq_printf(m, ",CIFS_POSIX");
258 #ifdef CONFIG_CIFS_UPCALL
259 seq_printf(m, ",UPCALL(SPNEGO)");
261 #ifdef CONFIG_CIFS_XATTR
262 seq_printf(m, ",XATTR");
264 seq_printf(m, ",ACL");
266 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
267 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
268 seq_printf(m, "Servers:");
271 spin_lock(&cifs_tcp_ses_lock);
272 list_for_each(tmp1, &cifs_tcp_ses_list) {
273 server = list_entry(tmp1, struct TCP_Server_Info,
276 #ifdef CONFIG_CIFS_SMB_DIRECT
280 if (!server->smbd_conn) {
281 seq_printf(m, "\nSMBDirect transport not available");
285 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
286 "transport status: %x",
287 server->smbd_conn->protocol,
288 server->smbd_conn->transport_status);
289 seq_printf(m, "\nConn receive_credit_max: %x "
290 "send_credit_target: %x max_send_size: %x",
291 server->smbd_conn->receive_credit_max,
292 server->smbd_conn->send_credit_target,
293 server->smbd_conn->max_send_size);
294 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
295 "max_fragmented_send_size: %x max_receive_size:%x",
296 server->smbd_conn->max_fragmented_recv_size,
297 server->smbd_conn->max_fragmented_send_size,
298 server->smbd_conn->max_receive_size);
299 seq_printf(m, "\nConn keep_alive_interval: %x "
300 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
301 server->smbd_conn->keep_alive_interval,
302 server->smbd_conn->max_readwrite_size,
303 server->smbd_conn->rdma_readwrite_threshold);
304 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
305 "count_put_receive_buffer: %x count_send_empty: %x",
306 server->smbd_conn->count_get_receive_buffer,
307 server->smbd_conn->count_put_receive_buffer,
308 server->smbd_conn->count_send_empty);
309 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
310 "count_enqueue_reassembly_queue: %x "
311 "count_dequeue_reassembly_queue: %x "
312 "fragment_reassembly_remaining: %x "
313 "reassembly_data_length: %x "
314 "reassembly_queue_length: %x",
315 server->smbd_conn->count_reassembly_queue,
316 server->smbd_conn->count_enqueue_reassembly_queue,
317 server->smbd_conn->count_dequeue_reassembly_queue,
318 server->smbd_conn->fragment_reassembly_remaining,
319 server->smbd_conn->reassembly_data_length,
320 server->smbd_conn->reassembly_queue_length);
321 seq_printf(m, "\nCurrent Credits send_credits: %x "
322 "receive_credits: %x receive_credit_target: %x",
323 atomic_read(&server->smbd_conn->send_credits),
324 atomic_read(&server->smbd_conn->receive_credits),
325 server->smbd_conn->receive_credit_target);
326 seq_printf(m, "\nPending send_pending: %x "
327 "send_payload_pending: %x",
328 atomic_read(&server->smbd_conn->send_pending),
329 atomic_read(&server->smbd_conn->send_payload_pending));
330 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
331 "count_empty_packet_queue: %x",
332 server->smbd_conn->count_receive_queue,
333 server->smbd_conn->count_empty_packet_queue);
334 seq_printf(m, "\nMR responder_resources: %x "
335 "max_frmr_depth: %x mr_type: %x",
336 server->smbd_conn->responder_resources,
337 server->smbd_conn->max_frmr_depth,
338 server->smbd_conn->mr_type);
339 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
340 atomic_read(&server->smbd_conn->mr_ready_count),
341 atomic_read(&server->smbd_conn->mr_used_count));
344 seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
345 server->credits, server->dialect);
346 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
347 seq_printf(m, " COMPRESS_LZNT1");
348 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
349 seq_printf(m, " COMPRESS_LZ77");
350 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
351 seq_printf(m, " COMPRESS_LZ77_HUFF");
353 seq_printf(m, " signed");
354 if (server->posix_ext_supported)
355 seq_printf(m, " posix");
358 list_for_each(tmp2, &server->smb_ses_list) {
359 ses = list_entry(tmp2, struct cifs_ses,
361 if ((ses->serverDomain == NULL) ||
362 (ses->serverOS == NULL) ||
363 (ses->serverNOS == NULL)) {
364 seq_printf(m, "\n%d) Name: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
365 i, ses->serverName, ses->ses_count,
366 ses->capabilities, ses->status);
367 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
368 seq_printf(m, "Guest\t");
369 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
370 seq_printf(m, "Anonymous\t");
373 "\n%d) Name: %s Domain: %s Uses: %d OS:"
374 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
375 " session status: %d ",
376 i, ses->serverName, ses->serverDomain,
377 ses->ses_count, ses->serverOS, ses->serverNOS,
378 ses->capabilities, ses->status);
381 seq_printf(m, "RDMA\n\t");
382 seq_printf(m, "TCP status: %d Instance: %d\n\tLocal Users To "
383 "Server: %d SecMode: 0x%x Req On Wire: %d",
385 server->reconnect_instance,
387 server->sec_mode, in_flight(server));
389 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
390 atomic_read(&server->in_send),
391 atomic_read(&server->num_waiters));
393 /* dump session id helpful for use with network trace */
394 seq_printf(m, " SessionId: 0x%llx", ses->Suid);
395 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
396 seq_puts(m, " encrypted");
398 seq_puts(m, " signed");
400 if (ses->chan_count > 1) {
401 seq_printf(m, "\n\n\tExtra Channels: %zu\n",
403 for (j = 1; j < ses->chan_count; j++)
404 cifs_dump_channel(m, j, &ses->chans[j]);
407 seq_puts(m, "\n\tShares:");
410 seq_printf(m, "\n\t%d) IPC: ", j);
412 cifs_debug_tcon(m, ses->tcon_ipc);
414 seq_puts(m, "none\n");
416 list_for_each(tmp3, &ses->tcon_list) {
417 tcon = list_entry(tmp3, struct cifs_tcon,
420 seq_printf(m, "\n\t%d) ", j);
421 cifs_debug_tcon(m, tcon);
424 seq_puts(m, "\n\tMIDs:\n");
426 spin_lock(&GlobalMid_Lock);
427 list_for_each(tmp3, &server->pending_mid_q) {
428 mid_entry = list_entry(tmp3, struct mid_q_entry,
430 seq_printf(m, "\tState: %d com: %d pid:"
431 " %d cbdata: %p mid %llu\n",
432 mid_entry->mid_state,
433 le16_to_cpu(mid_entry->command),
435 mid_entry->callback_data,
438 spin_unlock(&GlobalMid_Lock);
440 spin_lock(&ses->iface_lock);
441 if (ses->iface_count)
442 seq_printf(m, "\n\tServer interfaces: %zu\n",
444 for (j = 0; j < ses->iface_count; j++) {
445 struct cifs_server_iface *iface;
447 iface = &ses->iface_list[j];
448 seq_printf(m, "\t%d)", j);
449 cifs_dump_iface(m, iface);
450 if (is_ses_using_iface(ses, iface))
451 seq_puts(m, "\t\t[CONNECTED]\n");
453 spin_unlock(&ses->iface_lock);
456 spin_unlock(&cifs_tcp_ses_lock);
459 /* BB add code to dump additional info such as TCP session info now */
463 static ssize_t cifs_stats_proc_write(struct file *file,
464 const char __user *buffer, size_t count, loff_t *ppos)
468 struct list_head *tmp1, *tmp2, *tmp3;
469 struct TCP_Server_Info *server;
470 struct cifs_ses *ses;
471 struct cifs_tcon *tcon;
473 rc = kstrtobool_from_user(buffer, count, &bv);
475 #ifdef CONFIG_CIFS_STATS2
478 atomic_set(&totBufAllocCount, 0);
479 atomic_set(&totSmBufAllocCount, 0);
480 #endif /* CONFIG_CIFS_STATS2 */
481 atomic_set(&tcpSesReconnectCount, 0);
482 atomic_set(&tconInfoReconnectCount, 0);
484 spin_lock(&GlobalMid_Lock);
485 GlobalMaxActiveXid = 0;
486 GlobalCurrentXid = 0;
487 spin_unlock(&GlobalMid_Lock);
488 spin_lock(&cifs_tcp_ses_lock);
489 list_for_each(tmp1, &cifs_tcp_ses_list) {
490 server = list_entry(tmp1, struct TCP_Server_Info,
492 server->max_in_flight = 0;
493 #ifdef CONFIG_CIFS_STATS2
494 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
495 atomic_set(&server->num_cmds[i], 0);
496 atomic_set(&server->smb2slowcmd[i], 0);
497 server->time_per_cmd[i] = 0;
498 server->slowest_cmd[i] = 0;
499 server->fastest_cmd[0] = 0;
501 #endif /* CONFIG_CIFS_STATS2 */
502 list_for_each(tmp2, &server->smb_ses_list) {
503 ses = list_entry(tmp2, struct cifs_ses,
505 list_for_each(tmp3, &ses->tcon_list) {
506 tcon = list_entry(tmp3,
509 atomic_set(&tcon->num_smbs_sent, 0);
510 spin_lock(&tcon->stat_lock);
511 tcon->bytes_read = 0;
512 tcon->bytes_written = 0;
513 spin_unlock(&tcon->stat_lock);
514 if (server->ops->clear_stats)
515 server->ops->clear_stats(tcon);
519 spin_unlock(&cifs_tcp_ses_lock);
527 static int cifs_stats_proc_show(struct seq_file *m, void *v)
530 #ifdef CONFIG_CIFS_STATS2
533 struct list_head *tmp1, *tmp2, *tmp3;
534 struct TCP_Server_Info *server;
535 struct cifs_ses *ses;
536 struct cifs_tcon *tcon;
538 seq_printf(m, "Resources in use\nCIFS Session: %d\n",
539 sesInfoAllocCount.counter);
540 seq_printf(m, "Share (unique mount targets): %d\n",
541 tconInfoAllocCount.counter);
542 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
543 bufAllocCount.counter,
544 cifs_min_rcv + tcpSesAllocCount.counter);
545 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
546 smBufAllocCount.counter, cifs_min_small);
547 #ifdef CONFIG_CIFS_STATS2
548 seq_printf(m, "Total Large %d Small %d Allocations\n",
549 atomic_read(&totBufAllocCount),
550 atomic_read(&totSmBufAllocCount));
551 #endif /* CONFIG_CIFS_STATS2 */
553 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
555 "\n%d session %d share reconnects\n",
556 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
559 "Total vfs operations: %d maximum at one time: %d\n",
560 GlobalCurrentXid, GlobalMaxActiveXid);
563 spin_lock(&cifs_tcp_ses_lock);
564 list_for_each(tmp1, &cifs_tcp_ses_list) {
565 server = list_entry(tmp1, struct TCP_Server_Info,
567 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
568 #ifdef CONFIG_CIFS_STATS2
569 seq_puts(m, "\nTotal time spent processing by command. Time ");
570 seq_printf(m, "units are jiffies (%d per second)\n", HZ);
571 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
572 seq_puts(m, " --------\t------\t----------\t-------\t-------\n");
573 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
574 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j,
575 atomic_read(&server->num_cmds[j]),
576 server->time_per_cmd[j],
577 server->fastest_cmd[j],
578 server->slowest_cmd[j]);
579 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
580 if (atomic_read(&server->smb2slowcmd[j]))
581 seq_printf(m, " %d slow responses from %s for command %d\n",
582 atomic_read(&server->smb2slowcmd[j]),
583 server->hostname, j);
585 list_for_each(tmp2, &server->smb_ses_list) {
586 ses = list_entry(tmp2, struct cifs_ses,
588 list_for_each(tmp3, &ses->tcon_list) {
589 tcon = list_entry(tmp3,
593 seq_printf(m, "\n%d) %s", i, tcon->treeName);
594 if (tcon->need_reconnect)
595 seq_puts(m, "\tDISCONNECTED ");
596 seq_printf(m, "\nSMBs: %d",
597 atomic_read(&tcon->num_smbs_sent));
598 if (server->ops->print_stats)
599 server->ops->print_stats(m, tcon);
603 spin_unlock(&cifs_tcp_ses_lock);
609 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
611 return single_open(file, cifs_stats_proc_show, NULL);
614 static const struct proc_ops cifs_stats_proc_ops = {
615 .proc_open = cifs_stats_proc_open,
616 .proc_read = seq_read,
617 .proc_lseek = seq_lseek,
618 .proc_release = single_release,
619 .proc_write = cifs_stats_proc_write,
622 #ifdef CONFIG_CIFS_SMB_DIRECT
623 #define PROC_FILE_DEFINE(name) \
624 static ssize_t name##_write(struct file *file, const char __user *buffer, \
625 size_t count, loff_t *ppos) \
628 rc = kstrtoint_from_user(buffer, count, 10, & name); \
633 static int name##_proc_show(struct seq_file *m, void *v) \
635 seq_printf(m, "%d\n", name ); \
638 static int name##_open(struct inode *inode, struct file *file) \
640 return single_open(file, name##_proc_show, NULL); \
643 static const struct proc_ops cifs_##name##_proc_fops = { \
644 .proc_open = name##_open, \
645 .proc_read = seq_read, \
646 .proc_lseek = seq_lseek, \
647 .proc_release = single_release, \
648 .proc_write = name##_write, \
651 PROC_FILE_DEFINE(rdma_readwrite_threshold);
652 PROC_FILE_DEFINE(smbd_max_frmr_depth);
653 PROC_FILE_DEFINE(smbd_keep_alive_interval);
654 PROC_FILE_DEFINE(smbd_max_receive_size);
655 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
656 PROC_FILE_DEFINE(smbd_max_send_size);
657 PROC_FILE_DEFINE(smbd_send_credit_target);
658 PROC_FILE_DEFINE(smbd_receive_credit_max);
661 static struct proc_dir_entry *proc_fs_cifs;
662 static const struct proc_ops cifsFYI_proc_ops;
663 static const struct proc_ops cifs_lookup_cache_proc_ops;
664 static const struct proc_ops traceSMB_proc_ops;
665 static const struct proc_ops cifs_security_flags_proc_ops;
666 static const struct proc_ops cifs_linux_ext_proc_ops;
671 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
672 if (proc_fs_cifs == NULL)
675 proc_create_single("DebugData", 0, proc_fs_cifs,
676 cifs_debug_data_proc_show);
678 proc_create_single("open_files", 0400, proc_fs_cifs,
679 cifs_debug_files_proc_show);
681 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
682 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
683 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
684 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
685 &cifs_linux_ext_proc_ops);
686 proc_create("SecurityFlags", 0644, proc_fs_cifs,
687 &cifs_security_flags_proc_ops);
688 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
689 &cifs_lookup_cache_proc_ops);
691 #ifdef CONFIG_CIFS_DFS_UPCALL
692 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
695 #ifdef CONFIG_CIFS_SMB_DIRECT
696 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
697 &cifs_rdma_readwrite_threshold_proc_fops);
698 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
699 &cifs_smbd_max_frmr_depth_proc_fops);
700 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
701 &cifs_smbd_keep_alive_interval_proc_fops);
702 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
703 &cifs_smbd_max_receive_size_proc_fops);
704 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
705 &cifs_smbd_max_fragmented_recv_size_proc_fops);
706 proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
707 &cifs_smbd_max_send_size_proc_fops);
708 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
709 &cifs_smbd_send_credit_target_proc_fops);
710 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
711 &cifs_smbd_receive_credit_max_proc_fops);
716 cifs_proc_clean(void)
718 if (proc_fs_cifs == NULL)
721 remove_proc_entry("DebugData", proc_fs_cifs);
722 remove_proc_entry("open_files", proc_fs_cifs);
723 remove_proc_entry("cifsFYI", proc_fs_cifs);
724 remove_proc_entry("traceSMB", proc_fs_cifs);
725 remove_proc_entry("Stats", proc_fs_cifs);
726 remove_proc_entry("SecurityFlags", proc_fs_cifs);
727 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
728 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
730 #ifdef CONFIG_CIFS_DFS_UPCALL
731 remove_proc_entry("dfscache", proc_fs_cifs);
733 #ifdef CONFIG_CIFS_SMB_DIRECT
734 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
735 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
736 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
737 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
738 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
739 remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
740 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
741 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
743 remove_proc_entry("fs/cifs", NULL);
746 static int cifsFYI_proc_show(struct seq_file *m, void *v)
748 seq_printf(m, "%d\n", cifsFYI);
752 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
754 return single_open(file, cifsFYI_proc_show, NULL);
757 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
758 size_t count, loff_t *ppos)
760 char c[2] = { '\0' };
764 rc = get_user(c[0], buffer);
767 if (strtobool(c, &bv) == 0)
769 else if ((c[0] > '1') && (c[0] <= '9'))
770 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
777 static const struct proc_ops cifsFYI_proc_ops = {
778 .proc_open = cifsFYI_proc_open,
779 .proc_read = seq_read,
780 .proc_lseek = seq_lseek,
781 .proc_release = single_release,
782 .proc_write = cifsFYI_proc_write,
785 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
787 seq_printf(m, "%d\n", linuxExtEnabled);
791 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
793 return single_open(file, cifs_linux_ext_proc_show, NULL);
796 static ssize_t cifs_linux_ext_proc_write(struct file *file,
797 const char __user *buffer, size_t count, loff_t *ppos)
801 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
808 static const struct proc_ops cifs_linux_ext_proc_ops = {
809 .proc_open = cifs_linux_ext_proc_open,
810 .proc_read = seq_read,
811 .proc_lseek = seq_lseek,
812 .proc_release = single_release,
813 .proc_write = cifs_linux_ext_proc_write,
816 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
818 seq_printf(m, "%d\n", lookupCacheEnabled);
822 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
824 return single_open(file, cifs_lookup_cache_proc_show, NULL);
827 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
828 const char __user *buffer, size_t count, loff_t *ppos)
832 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
839 static const struct proc_ops cifs_lookup_cache_proc_ops = {
840 .proc_open = cifs_lookup_cache_proc_open,
841 .proc_read = seq_read,
842 .proc_lseek = seq_lseek,
843 .proc_release = single_release,
844 .proc_write = cifs_lookup_cache_proc_write,
847 static int traceSMB_proc_show(struct seq_file *m, void *v)
849 seq_printf(m, "%d\n", traceSMB);
853 static int traceSMB_proc_open(struct inode *inode, struct file *file)
855 return single_open(file, traceSMB_proc_show, NULL);
858 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
859 size_t count, loff_t *ppos)
863 rc = kstrtobool_from_user(buffer, count, &traceSMB);
870 static const struct proc_ops traceSMB_proc_ops = {
871 .proc_open = traceSMB_proc_open,
872 .proc_read = seq_read,
873 .proc_lseek = seq_lseek,
874 .proc_release = single_release,
875 .proc_write = traceSMB_proc_write,
878 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
880 seq_printf(m, "0x%x\n", global_secflags);
884 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
886 return single_open(file, cifs_security_flags_proc_show, NULL);
890 * Ensure that if someone sets a MUST flag, that we disable all other MAY
891 * flags except for the ones corresponding to the given MUST flag. If there are
892 * multiple MUST flags, then try to prefer more secure ones.
895 cifs_security_flags_handle_must_flags(unsigned int *flags)
897 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
899 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
900 *flags = CIFSSEC_MUST_KRB5;
901 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
902 *flags = CIFSSEC_MUST_NTLMSSP;
903 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
904 *flags = CIFSSEC_MUST_NTLMV2;
905 else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM)
906 *flags = CIFSSEC_MUST_NTLM;
907 else if (CIFSSEC_MUST_LANMAN &&
908 (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN)
909 *flags = CIFSSEC_MUST_LANMAN;
910 else if (CIFSSEC_MUST_PLNTXT &&
911 (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT)
912 *flags = CIFSSEC_MUST_PLNTXT;
917 static ssize_t cifs_security_flags_proc_write(struct file *file,
918 const char __user *buffer, size_t count, loff_t *ppos)
922 char flags_string[12];
925 if ((count < 1) || (count > 11))
928 memset(flags_string, 0, 12);
930 if (copy_from_user(flags_string, buffer, count))
934 /* single char or single char followed by null */
935 if (strtobool(flags_string, &bv) == 0) {
936 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
938 } else if (!isdigit(flags_string[0])) {
939 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
945 /* else we have a number */
946 rc = kstrtouint(flags_string, 0, &flags);
948 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
953 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
956 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
960 if (flags & ~CIFSSEC_MASK) {
961 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
962 flags & ~CIFSSEC_MASK);
966 cifs_security_flags_handle_must_flags(&flags);
968 /* flags look ok - update the global security flags for cifs module */
969 global_secflags = flags;
970 if (global_secflags & CIFSSEC_MUST_SIGN) {
971 /* requiring signing implies signing is allowed */
972 global_secflags |= CIFSSEC_MAY_SIGN;
973 cifs_dbg(FYI, "packet signing now required\n");
974 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
975 cifs_dbg(FYI, "packet signing disabled\n");
977 /* BB should we turn on MAY flags for other MUST options? */
981 static const struct proc_ops cifs_security_flags_proc_ops = {
982 .proc_open = cifs_security_flags_proc_open,
983 .proc_read = seq_read,
984 .proc_lseek = seq_lseek,
985 .proc_release = single_release,
986 .proc_write = cifs_security_flags_proc_write,
989 inline void cifs_proc_init(void)
993 inline void cifs_proc_clean(void)