summaryrefslogtreecommitdiffstats
path: root/fs/cifs/cifs_debug.c
blob: 877e4d9a1159d11203170ec463202187dd3a6466 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
/*
 *   fs/cifs_debug.c
 *
 *   Copyright (C) International Business Machines  Corp., 2000,2005
 *
 *   Modified by Steve French (sfrench@us.ibm.com)
 *
 *   This program is free software;  you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifsfs.h"

void
cifs_dump_mem(char *label, void *data, int length)
{
	int i, j;
	int *intptr = data;
	char *charptr = data;
	char buf[10], line[80];

	printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
		label, length, data);
	for (i = 0; i < length; i += 16) {
		line[0] = 0;
		for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
			sprintf(buf, " %08x", intptr[i / 4 + j]);
			strcat(line, buf);
		}
		buf[0] = ' ';
		buf[2] = 0;
		for (j = 0; (j < 16) && (i + j < length); j++) {
			buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
			strcat(line, buf);
		}
		printk(KERN_DEBUG "%s\n", line);
	}
}

#ifdef CONFIG_CIFS_DEBUG2
void cifs_dump_detail(struct smb_hdr *smb)
{
	cERROR(1, ("Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
		  smb->Command, smb->Status.CifsError,
		  smb->Flags, smb->Flags2, smb->Mid, smb->Pid));
	cERROR(1, ("smb buf %p len %d", smb, smbCalcSize_LE(smb)));
}


void cifs_dump_mids(struct TCP_Server_Info *server)
{
	struct list_head *tmp;
	struct mid_q_entry *mid_entry;

	if (server == NULL)
		return;

	cERROR(1, ("Dump pending requests:"));
	spin_lock(&GlobalMid_Lock);
	list_for_each(tmp, &server->pending_mid_q) {
		mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
		cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
			mid_entry->midState,
			(int)mid_entry->command,
			mid_entry->pid,
			mid_entry->tsk,
			mid_entry->mid));
#ifdef CONFIG_CIFS_STATS2
		cERROR(1, ("IsLarge: %d buf: %p time rcv: %ld now: %ld",
			mid_entry->largeBuf,
			mid_entry->resp_buf,
			mid_entry->when_received,
			jiffies));
#endif /* STATS2 */
		cERROR(1, ("IsMult: %d IsEnd: %d", mid_entry->multiRsp,
			  mid_entry->multiEnd));
		if (mid_entry->resp_buf) {
			cifs_dump_detail(mid_entry->resp_buf);
			cifs_dump_mem("existing buf: ",
				mid_entry->resp_buf, 62);
		}
	}
	spin_unlock(&GlobalMid_Lock);
}
#endif /* CONFIG_CIFS_DEBUG2 */

#ifdef CONFIG_PROC_FS
static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
{
	struct list_head *tmp1, *tmp2, *tmp3;
	struct mid_q_entry *mid_entry;
	struct TCP_Server_Info *server;
	struct cifsSesInfo *ses;
	struct cifsTconInfo *tcon;
	int i, j;
	__u32 dev_type;

	seq_puts(m,
		    "Display Internal CIFS Data Structures for Debugging\n"
		    "---------------------------------------------------\n");
	seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
	seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
	seq_printf(m, "Servers:");

	i = 0;
	read_lock(&cifs_tcp_ses_lock);
	list_for_each(tmp1, &cifs_tcp_ses_list) {
		server = list_entry(tmp1, struct TCP_Server_Info,
				    tcp_ses_list);
		i++;
		list_for_each(tmp2, &server->smb_ses_list) {
			ses = list_entry(tmp2, struct cifsSesInfo,
					 smb_ses_list);
			if ((ses->serverDomain == NULL) ||
				(ses->serverOS == NULL) ||
				(ses->serverNOS == NULL)) {
				seq_printf(m, "\n%d) entry for %s not fully "
					   "displayed\n\t", i, ses->serverName);
			} else {
				seq_printf(m,
				    "\n%d) Name: %s  Domain: %s Uses: %d OS:"
				    " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
				    " session status: %d\t",
				i, ses->serverName, ses->serverDomain,
				ses->ses_count, ses->serverOS, ses->serverNOS,
				ses->capabilities, ses->status);
			}
			seq_printf(m, "TCP status: %d\n\tLocal Users To "
				   "Server: %d SecMode: 0x%x Req On Wire: %d",
				   server->tcpStatus, server->srv_count,
				   server->secMode,
				   atomic_read(&server->inFlight));

#ifdef CONFIG_CIFS_STATS2
			seq_printf(m, " In Send: %d In MaxReq Wait: %d",
				atomic_read(&server->inSend),
				atomic_read(&server->num_waiters));
#endif

			seq_puts(m, "\n\tShares:");
			j = 0;
			list_for_each(tmp3, &ses->tcon_list) {
				tcon = list_entry(tmp3, struct cifsTconInfo,
						  tcon_list);
				++j;
				dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
				seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
					   tcon->treeName, tcon->tc_count);
				if (tcon->nativeFileSystem) {
					seq_printf(m, "Type: %s ",
						   tcon->nativeFileSystem);
				}
				seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
					"\nPathComponentMax: %d Status: 0x%d",
					le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
					le32_to_cpu(tcon->fsAttrInfo.Attributes),
					le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
					tcon->tidStatus);
				if (dev_type == FILE_DEVICE_DISK)
					seq_puts(m, " type: DISK ");
				else if (dev_type == FILE_DEVICE_CD_ROM)
					seq_puts(m, " type: CDROM ");
				else
					seq_printf(m, " type: %d ", dev_type);

				if (tcon->need_reconnect)
					seq_puts(m, "\tDISCONNECTED ");
				seq_putc(m, '\n');
			}

			seq_puts(m, "\n\tMIDs:\n");

			spin_lock(&GlobalMid_Lock);
			list_for_each(tmp3, &server->pending_mid_q) {
				mid_entry = list_entry(tmp3, struct mid_q_entry,
					qhead);
				seq_printf(m, "\tState: %d com: %d pid:"
						" %d tsk: %p mid %d\n",
						mid_entry->midState,
						(int)mid_entry->command,
						mid_entry->pid,
						mid_entry->tsk,
						mid_entry->mid);
			}
			spin_unlock(&GlobalMid_Lock);
		}
	}
	read_unlock(&cifs_tcp_ses_lock);
	seq_putc(m, '\n');

	/* BB add code to dump additional info such as TCP session info now */
	return 0;
}

static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, cifs_debug_data_proc_show, NULL);
}

static const struct file_operations cifs_debug_data_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= cifs_debug_data_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

#ifdef CONFIG_CIFS_STATS
static ssize_t cifs_stats_proc_write(struct file *file,
		const char __user *buffer, size_t count, loff_t *ppos)
{
	char c;
	int rc;
	struct list_head *tmp1, *tmp2, *tmp3;
	struct TCP_Server_Info *server;
	struct cifsSesInfo *ses;
	struct cifsTconInfo *tcon;

	rc = get_user(c, buffer);
	if (rc)
		return rc;

	if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
#ifdef CONFIG_CIFS_STATS2
		atomic_set(&totBufAllocCount, 0);
		atomic_set(&totSmBufAllocCount, 0);
#endif /* CONFIG_CIFS_STATS2 */
		read_lock(&cifs_tcp_ses_lock);
		list_for_each(tmp1, &cifs_tcp_ses_list) {
			server = list_entry(tmp1, struct TCP_Server_Info,
					    tcp_ses_list);
			list_for_each(tmp2, &server->smb_ses_list) {
				ses = list_entry(tmp2, struct cifsSesInfo,
						 smb_ses_list);
				list_for_each(tmp3, &ses->tcon_list) {
					tcon = list_entry(tmp3,
							  struct cifsTconInfo,
							  tcon_list);
					atomic_set(&tcon->num_smbs_sent, 0);
					atomic_set(&tcon->num_writes, 0);
					atomic_set(&tcon->num_reads, 0);
					atomic_set(&tcon->num_oplock_brks, 0);
					atomic_set(&tcon->num_opens, 0);
					atomic_set(&tcon->num_closes, 0);
					atomic_set(&tcon->num_deletes, 0);
					atomic_set(&tcon->num_mkdirs, 0);
					atomic_set(&tcon->num_rmdirs, 0);
					atomic_set(&tcon->num_renames, 0);
					atomic_set(&tcon->num_t2renames, 0);
					atomic_set(&tcon->num_ffirst, 0);
					atomic_set(&tcon->num_fnext, 0);
					atomic_set(&tcon->num_fclose, 0);
					atomic_set(&tcon->num_hardlinks, 0);
					atomic_set(&tcon->num_symlinks, 0);
					atomic_set(&tcon->num_locks, 0);
				}
			}
		}
		read_unlock(&cifs_tcp_ses_lock);
	}

	return count;
}

static int cifs_stats_proc_show(struct seq_file *m, void *v)
{
	int i;
	struct list_head *tmp1, *tmp2, *tmp3;
	struct TCP_Server_Info *server;
	struct cifsSesInfo *ses;
	struct cifsTconInfo *tcon;

	seq_printf(m,
			"Resources in use\nCIFS Session: %d\n",
			sesInfoAllocCount.counter);
	seq_printf(m, "Share (unique mount targets): %d\n",
			tconInfoAllocCount.counter);
	seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
			bufAllocCount.counter,
			cifs_min_rcv + tcpSesAllocCount.counter);
	seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
			smBufAllocCount.counter, cifs_min_small);
#ifdef CONFIG_CIFS_STATS2
	seq_printf(m, "Total Large %d Small %d Allocations\n",
				atomic_read(&totBufAllocCount),
				atomic_read(&totSmBufAllocCount));
#endif /* CONFIG_CIFS_STATS2 */

	seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
	seq_printf(m,
		"\n%d session %d share reconnects\n",
		tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);

	seq_printf(m,
		"Total vfs operations: %d maximum at one time: %d\n",
		GlobalCurrentXid, GlobalMaxActiveXid);

	i = 0;
	read_lock(&cifs_tcp_ses_lock);
	list_for_each(tmp1, &cifs_tcp_ses_list) {
		server = list_entry(tmp1, struct TCP_Server_Info,
				    tcp_ses_list);
		list_for_each(tmp2, &server->smb_ses_list) {
			ses = list_entry(tmp2, struct cifsSesInfo,
					 smb_ses_list);
			list_for_each(tmp3, &ses->tcon_list) {
				tcon = list_entry(tmp3,
						  struct cifsTconInfo,
						  tcon_list);
				i++;
				seq_printf(m, "\n%d) %s", i, tcon->treeName);
				if (tcon->need_reconnect)
					seq_puts(m, "\tDISCONNECTED ");
				seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
					atomic_read(&tcon->num_smbs_sent),
					atomic_read(&tcon->num_oplock_brks));
				seq_printf(m, "\nReads:  %d Bytes: %lld",
					atomic_read(&tcon->num_reads),
					(long long)(tcon->bytes_read));
				seq_printf(m, "\nWrites: %d Bytes: %lld",
					atomic_read(&tcon->num_writes),
					(long long)(tcon->bytes_written));
				seq_printf(m, "\nFlushes: %d",
					atomic_read(&tcon->num_flushes));
				seq_printf(m, "\nLocks: %d HardLinks: %d "
					      "Symlinks: %d",
					atomic_read(&tcon->num_locks),
					atomic_read(&tcon->num_hardlinks),
					atomic_read(&tcon->num_symlinks));
				seq_printf(m, "\nOpens: %d Closes: %d"
					      "Deletes: %d",
					atomic_read(&tcon->num_opens),
					atomic_read(&tcon->num_closes),
					atomic_read(&tcon->num_deletes));
				seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
					atomic_read(&tcon->num_mkdirs),
					atomic_read(&tcon->num_rmdirs));
				seq_printf(m, "\nRenames: %d T2 Renames %d",
					atomic_read(&tcon->num_renames),
					atomic_read(&tcon->num_t2renames));
				seq_printf(m, "\nFindFirst: %d FNext %d "
					      "FClose %d",
					atomic_read(&tcon->num_ffirst),
					atomic_read(&tcon->num_fnext),
					atomic_read(&tcon->num_fclose));
			}
		}
	}
	read_unlock(&cifs_tcp_ses_lock);

	seq_putc(m, '\n');
	return 0;
}

static int cifs_stats_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, cifs_stats_proc_show, NULL);
}

static const struct file_operations cifs_stats_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= cifs_stats_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= cifs_stats_proc_write,
};
#endif /* STATS */

static struct proc_dir_entry *proc_fs_cifs;
static const struct file_operations cifsFYI_proc_fops;
static const struct file_operations cifs_oplock_proc_fops;
static const struct file_operations cifs_lookup_cache_proc_fops;
static const struct file_operations traceSMB_proc_fops;
static const struct file_operations cifs_multiuser_mount_proc_fops;
static const struct file_operations cifs_security_flags_proc_fops;
static const struct file_operations cifs_experimental_proc_fops;
static const struct file_operations cifs_linux_ext_proc_fops;

void
cifs_proc_init(void)
{
	proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
	if (proc_fs_cifs == NULL)
		return;

	proc_fs_cifs->owner = THIS_MODULE;
	proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);

#ifdef CONFIG_CIFS_STATS
	proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
#endif /* STATS */
	proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
	proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
	proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
	proc_create("Experimental", 0, proc_fs_cifs,
		    &cifs_experimental_proc_fops);
	proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
		    &cifs_linux_ext_proc_fops);
	proc_create("MultiuserMount", 0, proc_fs_cifs,
		    &cifs_multiuser_mount_proc_fops);
	proc_create("SecurityFlags", 0, proc_fs_cifs,
		    &cifs_security_flags_proc_fops);
	proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
		    &cifs_lookup_cache_proc_fops);
}

void
cifs_proc_clean(void)
{
	if (proc_fs_cifs == NULL)
		return;

	remove_proc_entry("DebugData", proc_fs_cifs);
	remove_proc_entry("cifsFYI", proc_fs_cifs);
	remove_proc_entry("traceSMB", proc_fs_cifs);
#ifdef CONFIG_CIFS_STATS
	remove_proc_entry("Stats", proc_fs_cifs);
#endif
	remove_proc_entry("MultiuserMount", proc_fs_cifs);
	remove_proc_entry("OplockEnabled", proc_fs_cifs);
	remove_proc_entry("SecurityFlags", proc_fs_cifs);
	remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
	remove_proc_entry("Experimental", proc_fs_cifs);
	remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
	remove_proc_entry("fs/cifs", NULL);
}

static int cifsFYI_proc_show(struct seq_file *m, void *v)
{
	seq_printf(m, "%d\n", cifsFYI);
	return 0;
}

static int cifsFYI_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, cifsFYI_proc_show, NULL);
}

static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
		size_t count, loff_t *ppos)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		cifsFYI = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		cifsFYI = 1;
	else if ((c > '1') && (c <= '9'))
		cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */

	return count;
}

static const struct file_operations cifsFYI_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= cifsFYI_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= cifsFYI_proc_write,
};

static int cifs_oplock_proc_show(struct seq_file *m, void *v)
{
	seq_printf(m, "%d\n", oplockEnabled);
	return 0;
}

static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, cifs_oplock_proc_show, NULL);
}

static ssize_t cifs_oplock_proc_write(struct file *file,
		const char __user *buffer, size_t count, loff_t *ppos)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		oplockEnabled = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		oplockEnabled = 1;

	return count;
}

static const struct file_operations cifs_oplock_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= cifs_oplock_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= cifs_oplock_proc_write,
};

static int cifs_experimental_proc_show(struct seq_file *m, void *v)
{
	seq_printf(m, "%d\n", experimEnabled);
	return 0;
}

static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, cifs_experimental_proc_show, NULL);
}

static ssize_t cifs_experimental_proc_write(struct file *file,
		const char __user *buffer, size_t count, loff_t *ppos)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		experimEnabled = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		experimEnabled = 1;
	else if (c == '2')
		experimEnabled = 2;

	return count;
}

static const struct file_operations cifs_experimental_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= cifs_experimental_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= cifs_experimental_proc_write,
};

static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
{
	seq_printf(m, "%d\n", linuxExtEnabled);
	return 0;
}

static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, cifs_linux_ext_proc_show, NULL);
}

static ssize_t cifs_linux_ext_proc_write(struct file *file,
		const char __user *buffer, size_t count, loff_t *ppos)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		linuxExtEnabled = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		linuxExtEnabled = 1;

	return count;
}

static const struct file_operations cifs_linux_ext_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= cifs_linux_ext_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= cifs_linux_ext_proc_write,
};

static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
{
	seq_printf(m, "%d\n", lookupCacheEnabled);
	return 0;
}

static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, cifs_lookup_cache_proc_show, NULL);
}

static ssize_t cifs_lookup_cache_proc_write(struct file *file,
		const char __user *buffer, size_t count, loff_t *ppos)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		lookupCacheEnabled = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		lookupCacheEnabled = 1;

	return count;
}

static const struct file_operations cifs_lookup_cache_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= cifs_lookup_cache_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= cifs_lookup_cache_proc_write,
};

static int traceSMB_proc_show(struct seq_file *m, void *v)
{
	seq_printf(m, "%d\n", traceSMB);
	return 0;
}

static int traceSMB_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, traceSMB_proc_show, NULL);
}

static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
		size_t count, loff_t *ppos)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		traceSMB = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		traceSMB = 1;

	return count;
}

static const struct file_operations traceSMB_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= traceSMB_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= traceSMB_proc_write,
};

static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
{
	seq_printf(m, "%d\n", multiuser_mount);
	return 0;
}

static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
{
	return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
}

static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
		const char __user *buffer, size_t count, loff_t *ppos)
{
	char c;
	int rc;

	rc = get_user(c, buffer);
	if (rc)
		return rc;
	if (c == '0' || c == 'n' || c == 'N')
		multiuser_mount = 0;
	else if (c == '1' || c == 'y' || c == 'Y')
		multiuser_mount = 1;

	return count;
}

static const struct file_operations cifs_multiuser_mount_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= cifs_multiuser_mount_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= cifs_multiuser_mount_proc_write,
};

static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
{
	seq_printf(m, "0x%x\n", extended_security);
	return 0;
}

static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, cifs_security_flags_proc_show, NULL);
}

static ssize_t cifs_security_flags_proc_write(struct file *file,
		const char __user *buffer, size_t count, loff_t *ppos)
{
	unsigned int flags;
	char flags_string[12];
	char c;

	if ((count < 1) || (count > 11))
		return -EINVAL;

	memset(flags_string, 0, 12);

	if (copy_from_user(flags_string, buffer, count))
		return -EFAULT;

	if (count < 3) {
		/* single char or single char followed by null */
		c = flags_string[0];
		if (c == '0' || c == 'n' || c == 'N') {
			extended_security = CIFSSEC_DEF; /* default */
			return count;
		} else if (c == '1' || c == 'y' || c == 'Y') {
			extended_security = CIFSSEC_MAX;
			return count;
		} else if (!isdigit(c)) {
			cERROR(1, ("invalid flag %c", c));
			return -EINVAL;
		}
	}
	/* else we have a number */

	flags = simple_strtoul(flags_string, NULL, 0);

	cFYI(1, ("sec flags 0x%x", flags));

	if (flags <= 0)  {
		cERROR(1, ("invalid security flags %s", flags_string));
		return -EINVAL;
	}

	if (flags & ~CIFSSEC_MASK) {
		cERROR(1, ("attempt to set unsupported security flags 0x%x",
			flags & ~CIFSSEC_MASK));
		return -EINVAL;
	}
	/* flags look ok - update the global security flags for cifs module */
	extended_security = flags;
	if (extended_security & CIFSSEC_MUST_SIGN) {
		/* requiring signing implies signing is allowed */
		extended_security |= CIFSSEC_MAY_SIGN;
		cFYI(1, ("packet signing now required"));
	} else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
		cFYI(1, ("packet signing disabled"));
	}
	/* BB should we turn on MAY flags for other MUST options? */
	return count;
}

static const struct file_operations cifs_security_flags_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= cifs_security_flags_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
	.write		= cifs_security_flags_proc_write,
};
#else
inline void cifs_proc_init(void)
{
}

inline void cifs_proc_clean(void)
{
}
#endif /* PROC_FS */
OpenPOWER on IntegriCloud