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1/*
2 * fs/cifs_debug.c
3 *
4 * Copyright (C) International Business Machines Corp., 2000,2005
5 *
6 * Modified by Steve French (sfrench@us.ibm.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
16 * the GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22#include <linux/fs.h>
23#include <linux/string.h>
24#include <linux/ctype.h>
25#include <linux/module.h>
26#include <linux/proc_fs.h>
27#include <linux/uaccess.h>
28#include "cifspdu.h"
29#include "cifsglob.h"
30#include "cifsproto.h"
31#include "cifs_debug.h"
32#include "cifsfs.h"
33#ifdef CONFIG_CIFS_SMB_DIRECT
34#include "smbdirect.h"
35#endif
36
37void
38cifs_dump_mem(char *label, void *data, int length)
39{
40 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
41 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
42 data, length, true);
43}
44
45void cifs_dump_detail(void *buf)
46{
47#ifdef CONFIG_CIFS_DEBUG2
48 struct smb_hdr *smb = (struct smb_hdr *)buf;
49
50 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
51 smb->Command, smb->Status.CifsError,
52 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
53 cifs_dbg(VFS, "smb buf %p len %u\n", smb, smbCalcSize(smb));
54#endif /* CONFIG_CIFS_DEBUG2 */
55}
56
57void cifs_dump_mids(struct TCP_Server_Info *server)
58{
59#ifdef CONFIG_CIFS_DEBUG2
60 struct list_head *tmp;
61 struct mid_q_entry *mid_entry;
62
63 if (server == NULL)
64 return;
65
66 cifs_dbg(VFS, "Dump pending requests:\n");
67 spin_lock(&GlobalMid_Lock);
68 list_for_each(tmp, &server->pending_mid_q) {
69 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
70 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
71 mid_entry->mid_state,
72 le16_to_cpu(mid_entry->command),
73 mid_entry->pid,
74 mid_entry->callback_data,
75 mid_entry->mid);
76#ifdef CONFIG_CIFS_STATS2
77 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
78 mid_entry->large_buf,
79 mid_entry->resp_buf,
80 mid_entry->when_received,
81 jiffies);
82#endif /* STATS2 */
83 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
84 mid_entry->multiRsp, mid_entry->multiEnd);
85 if (mid_entry->resp_buf) {
86 cifs_dump_detail(mid_entry->resp_buf);
87 cifs_dump_mem("existing buf: ",
88 mid_entry->resp_buf, 62);
89 }
90 }
91 spin_unlock(&GlobalMid_Lock);
92#endif /* CONFIG_CIFS_DEBUG2 */
93}
94
95#ifdef CONFIG_PROC_FS
96static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
97{
98 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
99
100 seq_printf(m, "%s Mounts: %d ", tcon->treeName, tcon->tc_count);
101 if (tcon->nativeFileSystem)
102 seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
103 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
104 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
105 le32_to_cpu(tcon->fsAttrInfo.Attributes),
106 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
107 tcon->tidStatus);
108 if (dev_type == FILE_DEVICE_DISK)
109 seq_puts(m, " type: DISK ");
110 else if (dev_type == FILE_DEVICE_CD_ROM)
111 seq_puts(m, " type: CDROM ");
112 else
113 seq_printf(m, " type: %d ", dev_type);
114 if (tcon->seal)
115 seq_printf(m, " Encrypted");
116 if (tcon->unix_ext)
117 seq_printf(m, " POSIX Extensions");
118 if (tcon->ses->server->ops->dump_share_caps)
119 tcon->ses->server->ops->dump_share_caps(m, tcon);
120
121 if (tcon->need_reconnect)
122 seq_puts(m, "\tDISCONNECTED ");
123 seq_putc(m, '\n');
124}
125
126static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
127{
128 struct list_head *tmp1, *tmp2, *tmp3;
129 struct mid_q_entry *mid_entry;
130 struct TCP_Server_Info *server;
131 struct cifs_ses *ses;
132 struct cifs_tcon *tcon;
133 int i, j;
134
135 seq_puts(m,
136 "Display Internal CIFS Data Structures for Debugging\n"
137 "---------------------------------------------------\n");
138 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
139 seq_printf(m, "Features:");
140#ifdef CONFIG_CIFS_DFS_UPCALL
141 seq_printf(m, " dfs");
142#endif
143#ifdef CONFIG_CIFS_FSCACHE
144 seq_printf(m, " fscache");
145#endif
146#ifdef CONFIG_CIFS_WEAK_PW_HASH
147 seq_printf(m, " lanman");
148#endif
149#ifdef CONFIG_CIFS_POSIX
150 seq_printf(m, " posix");
151#endif
152#ifdef CONFIG_CIFS_UPCALL
153 seq_printf(m, " spnego");
154#endif
155#ifdef CONFIG_CIFS_XATTR
156 seq_printf(m, " xattr");
157#endif
158#ifdef CONFIG_CIFS_ACL
159 seq_printf(m, " acl");
160#endif
161 seq_putc(m, '\n');
162 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
163 seq_printf(m, "Servers:");
164
165 i = 0;
166 spin_lock(&cifs_tcp_ses_lock);
167 list_for_each(tmp1, &cifs_tcp_ses_list) {
168 server = list_entry(tmp1, struct TCP_Server_Info,
169 tcp_ses_list);
170
171#ifdef CONFIG_CIFS_SMB_DIRECT
172 if (!server->rdma)
173 goto skip_rdma;
174
175 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
176 "transport status: %x",
177 server->smbd_conn->protocol,
178 server->smbd_conn->transport_status);
179 seq_printf(m, "\nConn receive_credit_max: %x "
180 "send_credit_target: %x max_send_size: %x",
181 server->smbd_conn->receive_credit_max,
182 server->smbd_conn->send_credit_target,
183 server->smbd_conn->max_send_size);
184 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
185 "max_fragmented_send_size: %x max_receive_size:%x",
186 server->smbd_conn->max_fragmented_recv_size,
187 server->smbd_conn->max_fragmented_send_size,
188 server->smbd_conn->max_receive_size);
189 seq_printf(m, "\nConn keep_alive_interval: %x "
190 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
191 server->smbd_conn->keep_alive_interval,
192 server->smbd_conn->max_readwrite_size,
193 server->smbd_conn->rdma_readwrite_threshold);
194 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
195 "count_put_receive_buffer: %x count_send_empty: %x",
196 server->smbd_conn->count_get_receive_buffer,
197 server->smbd_conn->count_put_receive_buffer,
198 server->smbd_conn->count_send_empty);
199 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
200 "count_enqueue_reassembly_queue: %x "
201 "count_dequeue_reassembly_queue: %x "
202 "fragment_reassembly_remaining: %x "
203 "reassembly_data_length: %x "
204 "reassembly_queue_length: %x",
205 server->smbd_conn->count_reassembly_queue,
206 server->smbd_conn->count_enqueue_reassembly_queue,
207 server->smbd_conn->count_dequeue_reassembly_queue,
208 server->smbd_conn->fragment_reassembly_remaining,
209 server->smbd_conn->reassembly_data_length,
210 server->smbd_conn->reassembly_queue_length);
211 seq_printf(m, "\nCurrent Credits send_credits: %x "
212 "receive_credits: %x receive_credit_target: %x",
213 atomic_read(&server->smbd_conn->send_credits),
214 atomic_read(&server->smbd_conn->receive_credits),
215 server->smbd_conn->receive_credit_target);
216 seq_printf(m, "\nPending send_pending: %x send_payload_pending:"
217 " %x smbd_send_pending: %x smbd_recv_pending: %x",
218 atomic_read(&server->smbd_conn->send_pending),
219 atomic_read(&server->smbd_conn->send_payload_pending),
220 server->smbd_conn->smbd_send_pending,
221 server->smbd_conn->smbd_recv_pending);
222 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
223 "count_empty_packet_queue: %x",
224 server->smbd_conn->count_receive_queue,
225 server->smbd_conn->count_empty_packet_queue);
226 seq_printf(m, "\nMR responder_resources: %x "
227 "max_frmr_depth: %x mr_type: %x",
228 server->smbd_conn->responder_resources,
229 server->smbd_conn->max_frmr_depth,
230 server->smbd_conn->mr_type);
231 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
232 atomic_read(&server->smbd_conn->mr_ready_count),
233 atomic_read(&server->smbd_conn->mr_used_count));
234skip_rdma:
235#endif
236 seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
237 server->credits, server->dialect);
238 if (server->sign)
239 seq_printf(m, " signed");
240 i++;
241 list_for_each(tmp2, &server->smb_ses_list) {
242 ses = list_entry(tmp2, struct cifs_ses,
243 smb_ses_list);
244 if ((ses->serverDomain == NULL) ||
245 (ses->serverOS == NULL) ||
246 (ses->serverNOS == NULL)) {
247 seq_printf(m, "\n%d) Name: %s Uses: %d Capability: 0x%x\tSession Status: %d\t",
248 i, ses->serverName, ses->ses_count,
249 ses->capabilities, ses->status);
250 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
251 seq_printf(m, "Guest\t");
252 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
253 seq_printf(m, "Anonymous\t");
254 } else {
255 seq_printf(m,
256 "\n%d) Name: %s Domain: %s Uses: %d OS:"
257 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
258 " session status: %d\t",
259 i, ses->serverName, ses->serverDomain,
260 ses->ses_count, ses->serverOS, ses->serverNOS,
261 ses->capabilities, ses->status);
262 }
263 if (server->rdma)
264 seq_printf(m, "RDMA\n\t");
265 seq_printf(m, "TCP status: %d\n\tLocal Users To "
266 "Server: %d SecMode: 0x%x Req On Wire: %d",
267 server->tcpStatus, server->srv_count,
268 server->sec_mode, in_flight(server));
269
270#ifdef CONFIG_CIFS_STATS2
271 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
272 atomic_read(&server->in_send),
273 atomic_read(&server->num_waiters));
274#endif
275
276 seq_puts(m, "\n\tShares:");
277 j = 0;
278
279 seq_printf(m, "\n\t%d) IPC: ", j);
280 if (ses->tcon_ipc)
281 cifs_debug_tcon(m, ses->tcon_ipc);
282 else
283 seq_puts(m, "none\n");
284
285 list_for_each(tmp3, &ses->tcon_list) {
286 tcon = list_entry(tmp3, struct cifs_tcon,
287 tcon_list);
288 ++j;
289 seq_printf(m, "\n\t%d) ", j);
290 cifs_debug_tcon(m, tcon);
291 }
292
293 seq_puts(m, "\n\tMIDs:\n");
294
295 spin_lock(&GlobalMid_Lock);
296 list_for_each(tmp3, &server->pending_mid_q) {
297 mid_entry = list_entry(tmp3, struct mid_q_entry,
298 qhead);
299 seq_printf(m, "\tState: %d com: %d pid:"
300 " %d cbdata: %p mid %llu\n",
301 mid_entry->mid_state,
302 le16_to_cpu(mid_entry->command),
303 mid_entry->pid,
304 mid_entry->callback_data,
305 mid_entry->mid);
306 }
307 spin_unlock(&GlobalMid_Lock);
308 }
309 }
310 spin_unlock(&cifs_tcp_ses_lock);
311 seq_putc(m, '\n');
312
313 /* BB add code to dump additional info such as TCP session info now */
314 return 0;
315}
316
317static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
318{
319 return single_open(file, cifs_debug_data_proc_show, NULL);
320}
321
322static const struct file_operations cifs_debug_data_proc_fops = {
323 .open = cifs_debug_data_proc_open,
324 .read = seq_read,
325 .llseek = seq_lseek,
326 .release = single_release,
327};
328
329#ifdef CONFIG_CIFS_STATS
330static ssize_t cifs_stats_proc_write(struct file *file,
331 const char __user *buffer, size_t count, loff_t *ppos)
332{
333 bool bv;
334 int rc;
335 struct list_head *tmp1, *tmp2, *tmp3;
336 struct TCP_Server_Info *server;
337 struct cifs_ses *ses;
338 struct cifs_tcon *tcon;
339
340 rc = kstrtobool_from_user(buffer, count, &bv);
341 if (rc == 0) {
342#ifdef CONFIG_CIFS_STATS2
343 atomic_set(&totBufAllocCount, 0);
344 atomic_set(&totSmBufAllocCount, 0);
345#endif /* CONFIG_CIFS_STATS2 */
346 spin_lock(&cifs_tcp_ses_lock);
347 list_for_each(tmp1, &cifs_tcp_ses_list) {
348 server = list_entry(tmp1, struct TCP_Server_Info,
349 tcp_ses_list);
350 list_for_each(tmp2, &server->smb_ses_list) {
351 ses = list_entry(tmp2, struct cifs_ses,
352 smb_ses_list);
353 list_for_each(tmp3, &ses->tcon_list) {
354 tcon = list_entry(tmp3,
355 struct cifs_tcon,
356 tcon_list);
357 atomic_set(&tcon->num_smbs_sent, 0);
358 if (server->ops->clear_stats)
359 server->ops->clear_stats(tcon);
360 }
361 }
362 }
363 spin_unlock(&cifs_tcp_ses_lock);
364 } else {
365 return rc;
366 }
367
368 return count;
369}
370
371static int cifs_stats_proc_show(struct seq_file *m, void *v)
372{
373 int i;
374 struct list_head *tmp1, *tmp2, *tmp3;
375 struct TCP_Server_Info *server;
376 struct cifs_ses *ses;
377 struct cifs_tcon *tcon;
378
379 seq_printf(m,
380 "Resources in use\nCIFS Session: %d\n",
381 sesInfoAllocCount.counter);
382 seq_printf(m, "Share (unique mount targets): %d\n",
383 tconInfoAllocCount.counter);
384 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
385 bufAllocCount.counter,
386 cifs_min_rcv + tcpSesAllocCount.counter);
387 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
388 smBufAllocCount.counter, cifs_min_small);
389#ifdef CONFIG_CIFS_STATS2
390 seq_printf(m, "Total Large %d Small %d Allocations\n",
391 atomic_read(&totBufAllocCount),
392 atomic_read(&totSmBufAllocCount));
393#endif /* CONFIG_CIFS_STATS2 */
394
395 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
396 seq_printf(m,
397 "\n%d session %d share reconnects\n",
398 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
399
400 seq_printf(m,
401 "Total vfs operations: %d maximum at one time: %d\n",
402 GlobalCurrentXid, GlobalMaxActiveXid);
403
404 i = 0;
405 spin_lock(&cifs_tcp_ses_lock);
406 list_for_each(tmp1, &cifs_tcp_ses_list) {
407 server = list_entry(tmp1, struct TCP_Server_Info,
408 tcp_ses_list);
409 list_for_each(tmp2, &server->smb_ses_list) {
410 ses = list_entry(tmp2, struct cifs_ses,
411 smb_ses_list);
412 list_for_each(tmp3, &ses->tcon_list) {
413 tcon = list_entry(tmp3,
414 struct cifs_tcon,
415 tcon_list);
416 i++;
417 seq_printf(m, "\n%d) %s", i, tcon->treeName);
418 if (tcon->need_reconnect)
419 seq_puts(m, "\tDISCONNECTED ");
420 seq_printf(m, "\nSMBs: %d",
421 atomic_read(&tcon->num_smbs_sent));
422 if (server->ops->print_stats)
423 server->ops->print_stats(m, tcon);
424 }
425 }
426 }
427 spin_unlock(&cifs_tcp_ses_lock);
428
429 seq_putc(m, '\n');
430 return 0;
431}
432
433static int cifs_stats_proc_open(struct inode *inode, struct file *file)
434{
435 return single_open(file, cifs_stats_proc_show, NULL);
436}
437
438static const struct file_operations cifs_stats_proc_fops = {
439 .open = cifs_stats_proc_open,
440 .read = seq_read,
441 .llseek = seq_lseek,
442 .release = single_release,
443 .write = cifs_stats_proc_write,
444};
445#endif /* STATS */
446
447#ifdef CONFIG_CIFS_SMB_DIRECT
448#define PROC_FILE_DEFINE(name) \
449static ssize_t name##_write(struct file *file, const char __user *buffer, \
450 size_t count, loff_t *ppos) \
451{ \
452 int rc; \
453 rc = kstrtoint_from_user(buffer, count, 10, & name); \
454 if (rc) \
455 return rc; \
456 return count; \
457} \
458static int name##_proc_show(struct seq_file *m, void *v) \
459{ \
460 seq_printf(m, "%d\n", name ); \
461 return 0; \
462} \
463static int name##_open(struct inode *inode, struct file *file) \
464{ \
465 return single_open(file, name##_proc_show, NULL); \
466} \
467\
468static const struct file_operations cifs_##name##_proc_fops = { \
469 .open = name##_open, \
470 .read = seq_read, \
471 .llseek = seq_lseek, \
472 .release = single_release, \
473 .write = name##_write, \
474}
475
476PROC_FILE_DEFINE(rdma_readwrite_threshold);
477PROC_FILE_DEFINE(smbd_max_frmr_depth);
478PROC_FILE_DEFINE(smbd_keep_alive_interval);
479PROC_FILE_DEFINE(smbd_max_receive_size);
480PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
481PROC_FILE_DEFINE(smbd_max_send_size);
482PROC_FILE_DEFINE(smbd_send_credit_target);
483PROC_FILE_DEFINE(smbd_receive_credit_max);
484#endif
485
486static struct proc_dir_entry *proc_fs_cifs;
487static const struct file_operations cifsFYI_proc_fops;
488static const struct file_operations cifs_lookup_cache_proc_fops;
489static const struct file_operations traceSMB_proc_fops;
490static const struct file_operations cifs_security_flags_proc_fops;
491static const struct file_operations cifs_linux_ext_proc_fops;
492
493void
494cifs_proc_init(void)
495{
496 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
497 if (proc_fs_cifs == NULL)
498 return;
499
500 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
501
502#ifdef CONFIG_CIFS_STATS
503 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
504#endif /* STATS */
505 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
506 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
507 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
508 &cifs_linux_ext_proc_fops);
509 proc_create("SecurityFlags", 0, proc_fs_cifs,
510 &cifs_security_flags_proc_fops);
511 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
512 &cifs_lookup_cache_proc_fops);
513#ifdef CONFIG_CIFS_SMB_DIRECT
514 proc_create("rdma_readwrite_threshold", 0, proc_fs_cifs,
515 &cifs_rdma_readwrite_threshold_proc_fops);
516 proc_create("smbd_max_frmr_depth", 0, proc_fs_cifs,
517 &cifs_smbd_max_frmr_depth_proc_fops);
518 proc_create("smbd_keep_alive_interval", 0, proc_fs_cifs,
519 &cifs_smbd_keep_alive_interval_proc_fops);
520 proc_create("smbd_max_receive_size", 0, proc_fs_cifs,
521 &cifs_smbd_max_receive_size_proc_fops);
522 proc_create("smbd_max_fragmented_recv_size", 0, proc_fs_cifs,
523 &cifs_smbd_max_fragmented_recv_size_proc_fops);
524 proc_create("smbd_max_send_size", 0, proc_fs_cifs,
525 &cifs_smbd_max_send_size_proc_fops);
526 proc_create("smbd_send_credit_target", 0, proc_fs_cifs,
527 &cifs_smbd_send_credit_target_proc_fops);
528 proc_create("smbd_receive_credit_max", 0, proc_fs_cifs,
529 &cifs_smbd_receive_credit_max_proc_fops);
530#endif
531}
532
533void
534cifs_proc_clean(void)
535{
536 if (proc_fs_cifs == NULL)
537 return;
538
539 remove_proc_entry("DebugData", proc_fs_cifs);
540 remove_proc_entry("cifsFYI", proc_fs_cifs);
541 remove_proc_entry("traceSMB", proc_fs_cifs);
542#ifdef CONFIG_CIFS_STATS
543 remove_proc_entry("Stats", proc_fs_cifs);
544#endif
545 remove_proc_entry("SecurityFlags", proc_fs_cifs);
546 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
547 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
548#ifdef CONFIG_CIFS_SMB_DIRECT
549 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
550 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
551 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
552 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
553 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
554 remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
555 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
556 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
557#endif
558 remove_proc_entry("fs/cifs", NULL);
559}
560
561static int cifsFYI_proc_show(struct seq_file *m, void *v)
562{
563 seq_printf(m, "%d\n", cifsFYI);
564 return 0;
565}
566
567static int cifsFYI_proc_open(struct inode *inode, struct file *file)
568{
569 return single_open(file, cifsFYI_proc_show, NULL);
570}
571
572static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
573 size_t count, loff_t *ppos)
574{
575 char c[2] = { '\0' };
576 bool bv;
577 int rc;
578
579 rc = get_user(c[0], buffer);
580 if (rc)
581 return rc;
582 if (strtobool(c, &bv) == 0)
583 cifsFYI = bv;
584 else if ((c[0] > '1') && (c[0] <= '9'))
585 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
586
587 return count;
588}
589
590static const struct file_operations cifsFYI_proc_fops = {
591 .open = cifsFYI_proc_open,
592 .read = seq_read,
593 .llseek = seq_lseek,
594 .release = single_release,
595 .write = cifsFYI_proc_write,
596};
597
598static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
599{
600 seq_printf(m, "%d\n", linuxExtEnabled);
601 return 0;
602}
603
604static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
605{
606 return single_open(file, cifs_linux_ext_proc_show, NULL);
607}
608
609static ssize_t cifs_linux_ext_proc_write(struct file *file,
610 const char __user *buffer, size_t count, loff_t *ppos)
611{
612 int rc;
613
614 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
615 if (rc)
616 return rc;
617
618 return count;
619}
620
621static const struct file_operations cifs_linux_ext_proc_fops = {
622 .open = cifs_linux_ext_proc_open,
623 .read = seq_read,
624 .llseek = seq_lseek,
625 .release = single_release,
626 .write = cifs_linux_ext_proc_write,
627};
628
629static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
630{
631 seq_printf(m, "%d\n", lookupCacheEnabled);
632 return 0;
633}
634
635static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
636{
637 return single_open(file, cifs_lookup_cache_proc_show, NULL);
638}
639
640static ssize_t cifs_lookup_cache_proc_write(struct file *file,
641 const char __user *buffer, size_t count, loff_t *ppos)
642{
643 int rc;
644
645 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
646 if (rc)
647 return rc;
648
649 return count;
650}
651
652static const struct file_operations cifs_lookup_cache_proc_fops = {
653 .open = cifs_lookup_cache_proc_open,
654 .read = seq_read,
655 .llseek = seq_lseek,
656 .release = single_release,
657 .write = cifs_lookup_cache_proc_write,
658};
659
660static int traceSMB_proc_show(struct seq_file *m, void *v)
661{
662 seq_printf(m, "%d\n", traceSMB);
663 return 0;
664}
665
666static int traceSMB_proc_open(struct inode *inode, struct file *file)
667{
668 return single_open(file, traceSMB_proc_show, NULL);
669}
670
671static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
672 size_t count, loff_t *ppos)
673{
674 int rc;
675
676 rc = kstrtobool_from_user(buffer, count, &traceSMB);
677 if (rc)
678 return rc;
679
680 return count;
681}
682
683static const struct file_operations traceSMB_proc_fops = {
684 .open = traceSMB_proc_open,
685 .read = seq_read,
686 .llseek = seq_lseek,
687 .release = single_release,
688 .write = traceSMB_proc_write,
689};
690
691static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
692{
693 seq_printf(m, "0x%x\n", global_secflags);
694 return 0;
695}
696
697static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
698{
699 return single_open(file, cifs_security_flags_proc_show, NULL);
700}
701
702/*
703 * Ensure that if someone sets a MUST flag, that we disable all other MAY
704 * flags except for the ones corresponding to the given MUST flag. If there are
705 * multiple MUST flags, then try to prefer more secure ones.
706 */
707static void
708cifs_security_flags_handle_must_flags(unsigned int *flags)
709{
710 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
711
712 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
713 *flags = CIFSSEC_MUST_KRB5;
714 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
715 *flags = CIFSSEC_MUST_NTLMSSP;
716 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
717 *flags = CIFSSEC_MUST_NTLMV2;
718 else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM)
719 *flags = CIFSSEC_MUST_NTLM;
720 else if (CIFSSEC_MUST_LANMAN &&
721 (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN)
722 *flags = CIFSSEC_MUST_LANMAN;
723 else if (CIFSSEC_MUST_PLNTXT &&
724 (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT)
725 *flags = CIFSSEC_MUST_PLNTXT;
726
727 *flags |= signflags;
728}
729
730static ssize_t cifs_security_flags_proc_write(struct file *file,
731 const char __user *buffer, size_t count, loff_t *ppos)
732{
733 int rc;
734 unsigned int flags;
735 char flags_string[12];
736 bool bv;
737
738 if ((count < 1) || (count > 11))
739 return -EINVAL;
740
741 memset(flags_string, 0, 12);
742
743 if (copy_from_user(flags_string, buffer, count))
744 return -EFAULT;
745
746 if (count < 3) {
747 /* single char or single char followed by null */
748 if (strtobool(flags_string, &bv) == 0) {
749 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
750 return count;
751 } else if (!isdigit(flags_string[0])) {
752 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
753 flags_string);
754 return -EINVAL;
755 }
756 }
757
758 /* else we have a number */
759 rc = kstrtouint(flags_string, 0, &flags);
760 if (rc) {
761 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
762 flags_string);
763 return rc;
764 }
765
766 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
767
768 if (flags == 0) {
769 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
770 return -EINVAL;
771 }
772
773 if (flags & ~CIFSSEC_MASK) {
774 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
775 flags & ~CIFSSEC_MASK);
776 return -EINVAL;
777 }
778
779 cifs_security_flags_handle_must_flags(&flags);
780
781 /* flags look ok - update the global security flags for cifs module */
782 global_secflags = flags;
783 if (global_secflags & CIFSSEC_MUST_SIGN) {
784 /* requiring signing implies signing is allowed */
785 global_secflags |= CIFSSEC_MAY_SIGN;
786 cifs_dbg(FYI, "packet signing now required\n");
787 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
788 cifs_dbg(FYI, "packet signing disabled\n");
789 }
790 /* BB should we turn on MAY flags for other MUST options? */
791 return count;
792}
793
794static const struct file_operations cifs_security_flags_proc_fops = {
795 .open = cifs_security_flags_proc_open,
796 .read = seq_read,
797 .llseek = seq_lseek,
798 .release = single_release,
799 .write = cifs_security_flags_proc_write,
800};
801#else
802inline void cifs_proc_init(void)
803{
804}
805
806inline void cifs_proc_clean(void)
807{
808}
809#endif /* PROC_FS */
1/*
2 * fs/cifs_debug.c
3 *
4 * Copyright (C) International Business Machines Corp., 2000,2005
5 *
6 * Modified by Steve French (sfrench@us.ibm.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
16 * the GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22#include <linux/fs.h>
23#include <linux/string.h>
24#include <linux/ctype.h>
25#include <linux/module.h>
26#include <linux/proc_fs.h>
27#include <asm/uaccess.h>
28#include "cifspdu.h"
29#include "cifsglob.h"
30#include "cifsproto.h"
31#include "cifs_debug.h"
32#include "cifsfs.h"
33
34void
35cifs_dump_mem(char *label, void *data, int length)
36{
37 int i, j;
38 int *intptr = data;
39 char *charptr = data;
40 char buf[10], line[80];
41
42 printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
43 label, length, data);
44 for (i = 0; i < length; i += 16) {
45 line[0] = 0;
46 for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
47 sprintf(buf, " %08x", intptr[i / 4 + j]);
48 strcat(line, buf);
49 }
50 buf[0] = ' ';
51 buf[2] = 0;
52 for (j = 0; (j < 16) && (i + j < length); j++) {
53 buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
54 strcat(line, buf);
55 }
56 printk(KERN_DEBUG "%s\n", line);
57 }
58}
59
60void cifs_dump_detail(void *buf)
61{
62#ifdef CONFIG_CIFS_DEBUG2
63 struct smb_hdr *smb = (struct smb_hdr *)buf;
64
65 cERROR(1, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
66 smb->Command, smb->Status.CifsError,
67 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
68 cERROR(1, "smb buf %p len %d", smb, smbCalcSize(smb));
69#endif /* CONFIG_CIFS_DEBUG2 */
70}
71
72void cifs_dump_mids(struct TCP_Server_Info *server)
73{
74#ifdef CONFIG_CIFS_DEBUG2
75 struct list_head *tmp;
76 struct mid_q_entry *mid_entry;
77
78 if (server == NULL)
79 return;
80
81 cERROR(1, "Dump pending requests:");
82 spin_lock(&GlobalMid_Lock);
83 list_for_each(tmp, &server->pending_mid_q) {
84 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
85 cERROR(1, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu",
86 mid_entry->mid_state,
87 le16_to_cpu(mid_entry->command),
88 mid_entry->pid,
89 mid_entry->callback_data,
90 mid_entry->mid);
91#ifdef CONFIG_CIFS_STATS2
92 cERROR(1, "IsLarge: %d buf: %p time rcv: %ld now: %ld",
93 mid_entry->large_buf,
94 mid_entry->resp_buf,
95 mid_entry->when_received,
96 jiffies);
97#endif /* STATS2 */
98 cERROR(1, "IsMult: %d IsEnd: %d", mid_entry->multiRsp,
99 mid_entry->multiEnd);
100 if (mid_entry->resp_buf) {
101 cifs_dump_detail(mid_entry->resp_buf);
102 cifs_dump_mem("existing buf: ",
103 mid_entry->resp_buf, 62);
104 }
105 }
106 spin_unlock(&GlobalMid_Lock);
107#endif /* CONFIG_CIFS_DEBUG2 */
108}
109
110#ifdef CONFIG_PROC_FS
111static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
112{
113 struct list_head *tmp1, *tmp2, *tmp3;
114 struct mid_q_entry *mid_entry;
115 struct TCP_Server_Info *server;
116 struct cifs_ses *ses;
117 struct cifs_tcon *tcon;
118 int i, j;
119 __u32 dev_type;
120
121 seq_puts(m,
122 "Display Internal CIFS Data Structures for Debugging\n"
123 "---------------------------------------------------\n");
124 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
125 seq_printf(m, "Features:");
126#ifdef CONFIG_CIFS_DFS_UPCALL
127 seq_printf(m, " dfs");
128#endif
129#ifdef CONFIG_CIFS_FSCACHE
130 seq_printf(m, " fscache");
131#endif
132#ifdef CONFIG_CIFS_WEAK_PW_HASH
133 seq_printf(m, " lanman");
134#endif
135#ifdef CONFIG_CIFS_POSIX
136 seq_printf(m, " posix");
137#endif
138#ifdef CONFIG_CIFS_UPCALL
139 seq_printf(m, " spnego");
140#endif
141#ifdef CONFIG_CIFS_XATTR
142 seq_printf(m, " xattr");
143#endif
144#ifdef CONFIG_CIFS_ACL
145 seq_printf(m, " acl");
146#endif
147 seq_putc(m, '\n');
148 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
149 seq_printf(m, "Servers:");
150
151 i = 0;
152 spin_lock(&cifs_tcp_ses_lock);
153 list_for_each(tmp1, &cifs_tcp_ses_list) {
154 server = list_entry(tmp1, struct TCP_Server_Info,
155 tcp_ses_list);
156 i++;
157 list_for_each(tmp2, &server->smb_ses_list) {
158 ses = list_entry(tmp2, struct cifs_ses,
159 smb_ses_list);
160 if ((ses->serverDomain == NULL) ||
161 (ses->serverOS == NULL) ||
162 (ses->serverNOS == NULL)) {
163 seq_printf(m, "\n%d) entry for %s not fully "
164 "displayed\n\t", i, ses->serverName);
165 } else {
166 seq_printf(m,
167 "\n%d) Name: %s Domain: %s Uses: %d OS:"
168 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
169 " session status: %d\t",
170 i, ses->serverName, ses->serverDomain,
171 ses->ses_count, ses->serverOS, ses->serverNOS,
172 ses->capabilities, ses->status);
173 }
174 seq_printf(m, "TCP status: %d\n\tLocal Users To "
175 "Server: %d SecMode: 0x%x Req On Wire: %d",
176 server->tcpStatus, server->srv_count,
177 server->sec_mode, in_flight(server));
178
179#ifdef CONFIG_CIFS_STATS2
180 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
181 atomic_read(&server->in_send),
182 atomic_read(&server->num_waiters));
183#endif
184
185 seq_puts(m, "\n\tShares:");
186 j = 0;
187 list_for_each(tmp3, &ses->tcon_list) {
188 tcon = list_entry(tmp3, struct cifs_tcon,
189 tcon_list);
190 ++j;
191 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
192 seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
193 tcon->treeName, tcon->tc_count);
194 if (tcon->nativeFileSystem) {
195 seq_printf(m, "Type: %s ",
196 tcon->nativeFileSystem);
197 }
198 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
199 "\nPathComponentMax: %d Status: 0x%d",
200 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
201 le32_to_cpu(tcon->fsAttrInfo.Attributes),
202 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
203 tcon->tidStatus);
204 if (dev_type == FILE_DEVICE_DISK)
205 seq_puts(m, " type: DISK ");
206 else if (dev_type == FILE_DEVICE_CD_ROM)
207 seq_puts(m, " type: CDROM ");
208 else
209 seq_printf(m, " type: %d ", dev_type);
210
211 if (tcon->need_reconnect)
212 seq_puts(m, "\tDISCONNECTED ");
213 seq_putc(m, '\n');
214 }
215
216 seq_puts(m, "\n\tMIDs:\n");
217
218 spin_lock(&GlobalMid_Lock);
219 list_for_each(tmp3, &server->pending_mid_q) {
220 mid_entry = list_entry(tmp3, struct mid_q_entry,
221 qhead);
222 seq_printf(m, "\tState: %d com: %d pid:"
223 " %d cbdata: %p mid %llu\n",
224 mid_entry->mid_state,
225 le16_to_cpu(mid_entry->command),
226 mid_entry->pid,
227 mid_entry->callback_data,
228 mid_entry->mid);
229 }
230 spin_unlock(&GlobalMid_Lock);
231 }
232 }
233 spin_unlock(&cifs_tcp_ses_lock);
234 seq_putc(m, '\n');
235
236 /* BB add code to dump additional info such as TCP session info now */
237 return 0;
238}
239
240static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
241{
242 return single_open(file, cifs_debug_data_proc_show, NULL);
243}
244
245static const struct file_operations cifs_debug_data_proc_fops = {
246 .owner = THIS_MODULE,
247 .open = cifs_debug_data_proc_open,
248 .read = seq_read,
249 .llseek = seq_lseek,
250 .release = single_release,
251};
252
253#ifdef CONFIG_CIFS_STATS
254static ssize_t cifs_stats_proc_write(struct file *file,
255 const char __user *buffer, size_t count, loff_t *ppos)
256{
257 char c;
258 int rc;
259 struct list_head *tmp1, *tmp2, *tmp3;
260 struct TCP_Server_Info *server;
261 struct cifs_ses *ses;
262 struct cifs_tcon *tcon;
263
264 rc = get_user(c, buffer);
265 if (rc)
266 return rc;
267
268 if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
269#ifdef CONFIG_CIFS_STATS2
270 atomic_set(&totBufAllocCount, 0);
271 atomic_set(&totSmBufAllocCount, 0);
272#endif /* CONFIG_CIFS_STATS2 */
273 spin_lock(&cifs_tcp_ses_lock);
274 list_for_each(tmp1, &cifs_tcp_ses_list) {
275 server = list_entry(tmp1, struct TCP_Server_Info,
276 tcp_ses_list);
277 list_for_each(tmp2, &server->smb_ses_list) {
278 ses = list_entry(tmp2, struct cifs_ses,
279 smb_ses_list);
280 list_for_each(tmp3, &ses->tcon_list) {
281 tcon = list_entry(tmp3,
282 struct cifs_tcon,
283 tcon_list);
284 atomic_set(&tcon->num_smbs_sent, 0);
285 atomic_set(&tcon->num_writes, 0);
286 atomic_set(&tcon->num_reads, 0);
287 atomic_set(&tcon->num_oplock_brks, 0);
288 atomic_set(&tcon->num_opens, 0);
289 atomic_set(&tcon->num_posixopens, 0);
290 atomic_set(&tcon->num_posixmkdirs, 0);
291 atomic_set(&tcon->num_closes, 0);
292 atomic_set(&tcon->num_deletes, 0);
293 atomic_set(&tcon->num_mkdirs, 0);
294 atomic_set(&tcon->num_rmdirs, 0);
295 atomic_set(&tcon->num_renames, 0);
296 atomic_set(&tcon->num_t2renames, 0);
297 atomic_set(&tcon->num_ffirst, 0);
298 atomic_set(&tcon->num_fnext, 0);
299 atomic_set(&tcon->num_fclose, 0);
300 atomic_set(&tcon->num_hardlinks, 0);
301 atomic_set(&tcon->num_symlinks, 0);
302 atomic_set(&tcon->num_locks, 0);
303 }
304 }
305 }
306 spin_unlock(&cifs_tcp_ses_lock);
307 }
308
309 return count;
310}
311
312static int cifs_stats_proc_show(struct seq_file *m, void *v)
313{
314 int i;
315 struct list_head *tmp1, *tmp2, *tmp3;
316 struct TCP_Server_Info *server;
317 struct cifs_ses *ses;
318 struct cifs_tcon *tcon;
319
320 seq_printf(m,
321 "Resources in use\nCIFS Session: %d\n",
322 sesInfoAllocCount.counter);
323 seq_printf(m, "Share (unique mount targets): %d\n",
324 tconInfoAllocCount.counter);
325 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
326 bufAllocCount.counter,
327 cifs_min_rcv + tcpSesAllocCount.counter);
328 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
329 smBufAllocCount.counter, cifs_min_small);
330#ifdef CONFIG_CIFS_STATS2
331 seq_printf(m, "Total Large %d Small %d Allocations\n",
332 atomic_read(&totBufAllocCount),
333 atomic_read(&totSmBufAllocCount));
334#endif /* CONFIG_CIFS_STATS2 */
335
336 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
337 seq_printf(m,
338 "\n%d session %d share reconnects\n",
339 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
340
341 seq_printf(m,
342 "Total vfs operations: %d maximum at one time: %d\n",
343 GlobalCurrentXid, GlobalMaxActiveXid);
344
345 i = 0;
346 spin_lock(&cifs_tcp_ses_lock);
347 list_for_each(tmp1, &cifs_tcp_ses_list) {
348 server = list_entry(tmp1, struct TCP_Server_Info,
349 tcp_ses_list);
350 list_for_each(tmp2, &server->smb_ses_list) {
351 ses = list_entry(tmp2, struct cifs_ses,
352 smb_ses_list);
353 list_for_each(tmp3, &ses->tcon_list) {
354 tcon = list_entry(tmp3,
355 struct cifs_tcon,
356 tcon_list);
357 i++;
358 seq_printf(m, "\n%d) %s", i, tcon->treeName);
359 if (tcon->need_reconnect)
360 seq_puts(m, "\tDISCONNECTED ");
361 seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
362 atomic_read(&tcon->num_smbs_sent),
363 atomic_read(&tcon->num_oplock_brks));
364 seq_printf(m, "\nReads: %d Bytes: %lld",
365 atomic_read(&tcon->num_reads),
366 (long long)(tcon->bytes_read));
367 seq_printf(m, "\nWrites: %d Bytes: %lld",
368 atomic_read(&tcon->num_writes),
369 (long long)(tcon->bytes_written));
370 seq_printf(m, "\nFlushes: %d",
371 atomic_read(&tcon->num_flushes));
372 seq_printf(m, "\nLocks: %d HardLinks: %d "
373 "Symlinks: %d",
374 atomic_read(&tcon->num_locks),
375 atomic_read(&tcon->num_hardlinks),
376 atomic_read(&tcon->num_symlinks));
377 seq_printf(m, "\nOpens: %d Closes: %d "
378 "Deletes: %d",
379 atomic_read(&tcon->num_opens),
380 atomic_read(&tcon->num_closes),
381 atomic_read(&tcon->num_deletes));
382 seq_printf(m, "\nPosix Opens: %d "
383 "Posix Mkdirs: %d",
384 atomic_read(&tcon->num_posixopens),
385 atomic_read(&tcon->num_posixmkdirs));
386 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
387 atomic_read(&tcon->num_mkdirs),
388 atomic_read(&tcon->num_rmdirs));
389 seq_printf(m, "\nRenames: %d T2 Renames %d",
390 atomic_read(&tcon->num_renames),
391 atomic_read(&tcon->num_t2renames));
392 seq_printf(m, "\nFindFirst: %d FNext %d "
393 "FClose %d",
394 atomic_read(&tcon->num_ffirst),
395 atomic_read(&tcon->num_fnext),
396 atomic_read(&tcon->num_fclose));
397 }
398 }
399 }
400 spin_unlock(&cifs_tcp_ses_lock);
401
402 seq_putc(m, '\n');
403 return 0;
404}
405
406static int cifs_stats_proc_open(struct inode *inode, struct file *file)
407{
408 return single_open(file, cifs_stats_proc_show, NULL);
409}
410
411static const struct file_operations cifs_stats_proc_fops = {
412 .owner = THIS_MODULE,
413 .open = cifs_stats_proc_open,
414 .read = seq_read,
415 .llseek = seq_lseek,
416 .release = single_release,
417 .write = cifs_stats_proc_write,
418};
419#endif /* STATS */
420
421static struct proc_dir_entry *proc_fs_cifs;
422static const struct file_operations cifsFYI_proc_fops;
423static const struct file_operations cifs_lookup_cache_proc_fops;
424static const struct file_operations traceSMB_proc_fops;
425static const struct file_operations cifs_security_flags_proc_fops;
426static const struct file_operations cifs_linux_ext_proc_fops;
427
428void
429cifs_proc_init(void)
430{
431 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
432 if (proc_fs_cifs == NULL)
433 return;
434
435 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
436
437#ifdef CONFIG_CIFS_STATS
438 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
439#endif /* STATS */
440 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
441 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
442 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
443 &cifs_linux_ext_proc_fops);
444 proc_create("SecurityFlags", 0, proc_fs_cifs,
445 &cifs_security_flags_proc_fops);
446 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
447 &cifs_lookup_cache_proc_fops);
448}
449
450void
451cifs_proc_clean(void)
452{
453 if (proc_fs_cifs == NULL)
454 return;
455
456 remove_proc_entry("DebugData", proc_fs_cifs);
457 remove_proc_entry("cifsFYI", proc_fs_cifs);
458 remove_proc_entry("traceSMB", proc_fs_cifs);
459#ifdef CONFIG_CIFS_STATS
460 remove_proc_entry("Stats", proc_fs_cifs);
461#endif
462 remove_proc_entry("SecurityFlags", proc_fs_cifs);
463 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
464 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
465 remove_proc_entry("fs/cifs", NULL);
466}
467
468static int cifsFYI_proc_show(struct seq_file *m, void *v)
469{
470 seq_printf(m, "%d\n", cifsFYI);
471 return 0;
472}
473
474static int cifsFYI_proc_open(struct inode *inode, struct file *file)
475{
476 return single_open(file, cifsFYI_proc_show, NULL);
477}
478
479static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
480 size_t count, loff_t *ppos)
481{
482 char c;
483 int rc;
484
485 rc = get_user(c, buffer);
486 if (rc)
487 return rc;
488 if (c == '0' || c == 'n' || c == 'N')
489 cifsFYI = 0;
490 else if (c == '1' || c == 'y' || c == 'Y')
491 cifsFYI = 1;
492 else if ((c > '1') && (c <= '9'))
493 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
494
495 return count;
496}
497
498static const struct file_operations cifsFYI_proc_fops = {
499 .owner = THIS_MODULE,
500 .open = cifsFYI_proc_open,
501 .read = seq_read,
502 .llseek = seq_lseek,
503 .release = single_release,
504 .write = cifsFYI_proc_write,
505};
506
507static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
508{
509 seq_printf(m, "%d\n", linuxExtEnabled);
510 return 0;
511}
512
513static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
514{
515 return single_open(file, cifs_linux_ext_proc_show, NULL);
516}
517
518static ssize_t cifs_linux_ext_proc_write(struct file *file,
519 const char __user *buffer, size_t count, loff_t *ppos)
520{
521 char c;
522 int rc;
523
524 rc = get_user(c, buffer);
525 if (rc)
526 return rc;
527 if (c == '0' || c == 'n' || c == 'N')
528 linuxExtEnabled = 0;
529 else if (c == '1' || c == 'y' || c == 'Y')
530 linuxExtEnabled = 1;
531
532 return count;
533}
534
535static const struct file_operations cifs_linux_ext_proc_fops = {
536 .owner = THIS_MODULE,
537 .open = cifs_linux_ext_proc_open,
538 .read = seq_read,
539 .llseek = seq_lseek,
540 .release = single_release,
541 .write = cifs_linux_ext_proc_write,
542};
543
544static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
545{
546 seq_printf(m, "%d\n", lookupCacheEnabled);
547 return 0;
548}
549
550static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
551{
552 return single_open(file, cifs_lookup_cache_proc_show, NULL);
553}
554
555static ssize_t cifs_lookup_cache_proc_write(struct file *file,
556 const char __user *buffer, size_t count, loff_t *ppos)
557{
558 char c;
559 int rc;
560
561 rc = get_user(c, buffer);
562 if (rc)
563 return rc;
564 if (c == '0' || c == 'n' || c == 'N')
565 lookupCacheEnabled = 0;
566 else if (c == '1' || c == 'y' || c == 'Y')
567 lookupCacheEnabled = 1;
568
569 return count;
570}
571
572static const struct file_operations cifs_lookup_cache_proc_fops = {
573 .owner = THIS_MODULE,
574 .open = cifs_lookup_cache_proc_open,
575 .read = seq_read,
576 .llseek = seq_lseek,
577 .release = single_release,
578 .write = cifs_lookup_cache_proc_write,
579};
580
581static int traceSMB_proc_show(struct seq_file *m, void *v)
582{
583 seq_printf(m, "%d\n", traceSMB);
584 return 0;
585}
586
587static int traceSMB_proc_open(struct inode *inode, struct file *file)
588{
589 return single_open(file, traceSMB_proc_show, NULL);
590}
591
592static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
593 size_t count, loff_t *ppos)
594{
595 char c;
596 int rc;
597
598 rc = get_user(c, buffer);
599 if (rc)
600 return rc;
601 if (c == '0' || c == 'n' || c == 'N')
602 traceSMB = 0;
603 else if (c == '1' || c == 'y' || c == 'Y')
604 traceSMB = 1;
605
606 return count;
607}
608
609static const struct file_operations traceSMB_proc_fops = {
610 .owner = THIS_MODULE,
611 .open = traceSMB_proc_open,
612 .read = seq_read,
613 .llseek = seq_lseek,
614 .release = single_release,
615 .write = traceSMB_proc_write,
616};
617
618static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
619{
620 seq_printf(m, "0x%x\n", global_secflags);
621 return 0;
622}
623
624static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
625{
626 return single_open(file, cifs_security_flags_proc_show, NULL);
627}
628
629static ssize_t cifs_security_flags_proc_write(struct file *file,
630 const char __user *buffer, size_t count, loff_t *ppos)
631{
632 unsigned int flags;
633 char flags_string[12];
634 char c;
635
636 if ((count < 1) || (count > 11))
637 return -EINVAL;
638
639 memset(flags_string, 0, 12);
640
641 if (copy_from_user(flags_string, buffer, count))
642 return -EFAULT;
643
644 if (count < 3) {
645 /* single char or single char followed by null */
646 c = flags_string[0];
647 if (c == '0' || c == 'n' || c == 'N') {
648 global_secflags = CIFSSEC_DEF; /* default */
649 return count;
650 } else if (c == '1' || c == 'y' || c == 'Y') {
651 global_secflags = CIFSSEC_MAX;
652 return count;
653 } else if (!isdigit(c)) {
654 cERROR(1, "invalid flag %c", c);
655 return -EINVAL;
656 }
657 }
658 /* else we have a number */
659
660 flags = simple_strtoul(flags_string, NULL, 0);
661
662 cFYI(1, "sec flags 0x%x", flags);
663
664 if (flags <= 0) {
665 cERROR(1, "invalid security flags %s", flags_string);
666 return -EINVAL;
667 }
668
669 if (flags & ~CIFSSEC_MASK) {
670 cERROR(1, "attempt to set unsupported security flags 0x%x",
671 flags & ~CIFSSEC_MASK);
672 return -EINVAL;
673 }
674 /* flags look ok - update the global security flags for cifs module */
675 global_secflags = flags;
676 if (global_secflags & CIFSSEC_MUST_SIGN) {
677 /* requiring signing implies signing is allowed */
678 global_secflags |= CIFSSEC_MAY_SIGN;
679 cFYI(1, "packet signing now required");
680 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
681 cFYI(1, "packet signing disabled");
682 }
683 /* BB should we turn on MAY flags for other MUST options? */
684 return count;
685}
686
687static const struct file_operations cifs_security_flags_proc_fops = {
688 .owner = THIS_MODULE,
689 .open = cifs_security_flags_proc_open,
690 .read = seq_read,
691 .llseek = seq_lseek,
692 .release = single_release,
693 .write = cifs_security_flags_proc_write,
694};
695#else
696inline void cifs_proc_init(void)
697{
698}
699
700inline void cifs_proc_clean(void)
701{
702}
703#endif /* PROC_FS */