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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * fs/cifs_debug.c
3 *
Steve Frenchb8643e12005-04-28 22:41:07 -07004 * Copyright (C) International Business Machines Corp., 2000,2005
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
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
Steve French221601c2007-06-05 20:35:06 +000010 * the Free Software Foundation; either version 2 of the License, or
Linus Torvalds1da177e2005-04-16 15:20:36 -070011 * (at your option) any later version.
Steve French221601c2007-06-05 20:35:06 +000012 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 * 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
Steve French221601c2007-06-05 20:35:06 +000019 * along with this program; if not, write to the Free Software
Linus Torvalds1da177e2005-04-16 15:20:36 -070020 * 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"
Steve French6c91d362005-04-28 22:41:06 -070032#include "cifsfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
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
Steve French221601c2007-06-05 20:35:06 +000042 printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 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
Steve French39798772006-05-31 22:40:51 +000060#ifdef CONFIG_CIFS_DEBUG2
Steve Frenchffdd6e42007-06-24 21:15:44 +000061void cifs_dump_detail(struct smb_hdr *smb)
Steve French39798772006-05-31 22:40:51 +000062{
Steve French221601c2007-06-05 20:35:06 +000063 cERROR(1, ("Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
Steve French39798772006-05-31 22:40:51 +000064 smb->Command, smb->Status.CifsError,
65 smb->Flags, smb->Flags2, smb->Mid, smb->Pid));
Steve French221601c2007-06-05 20:35:06 +000066 cERROR(1, ("smb buf %p len %d", smb, smbCalcSize_LE(smb)));
Steve French39798772006-05-31 22:40:51 +000067}
68
69
Steve Frenchffdd6e42007-06-24 21:15:44 +000070void cifs_dump_mids(struct TCP_Server_Info *server)
Steve French39798772006-05-31 22:40:51 +000071{
72 struct list_head *tmp;
Steve Frenchffdd6e42007-06-24 21:15:44 +000073 struct mid_q_entry *mid_entry;
Steve French39798772006-05-31 22:40:51 +000074
Steve French221601c2007-06-05 20:35:06 +000075 if (server == NULL)
Steve French39798772006-05-31 22:40:51 +000076 return;
77
Steve French221601c2007-06-05 20:35:06 +000078 cERROR(1, ("Dump pending requests:"));
Steve French39798772006-05-31 22:40:51 +000079 spin_lock(&GlobalMid_Lock);
80 list_for_each(tmp, &server->pending_mid_q) {
81 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
Steve French221601c2007-06-05 20:35:06 +000082 if (mid_entry) {
83 cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
Steve French39798772006-05-31 22:40:51 +000084 mid_entry->midState,
85 (int)mid_entry->command,
86 mid_entry->pid,
87 mid_entry->tsk,
88 mid_entry->mid));
89#ifdef CONFIG_CIFS_STATS2
Steve French221601c2007-06-05 20:35:06 +000090 cERROR(1, ("IsLarge: %d buf: %p time rcv: %ld now: %ld",
Steve French39798772006-05-31 22:40:51 +000091 mid_entry->largeBuf,
92 mid_entry->resp_buf,
93 mid_entry->when_received,
94 jiffies));
95#endif /* STATS2 */
Steve French221601c2007-06-05 20:35:06 +000096 cERROR(1, ("IsMult: %d IsEnd: %d", mid_entry->multiRsp,
Steve French39798772006-05-31 22:40:51 +000097 mid_entry->multiEnd));
Steve French221601c2007-06-05 20:35:06 +000098 if (mid_entry->resp_buf) {
Steve French39798772006-05-31 22:40:51 +000099 cifs_dump_detail(mid_entry->resp_buf);
100 cifs_dump_mem("existing buf: ",
101 mid_entry->resp_buf,
102 62 /* fixme */);
103 }
Steve French39798772006-05-31 22:40:51 +0000104 }
105 }
106 spin_unlock(&GlobalMid_Lock);
107}
108#endif /* CONFIG_CIFS_DEBUG2 */
109
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110#ifdef CONFIG_PROC_FS
111static int
112cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
113 int count, int *eof, void *data)
114{
115 struct list_head *tmp;
116 struct list_head *tmp1;
Steve Frenchffdd6e42007-06-24 21:15:44 +0000117 struct mid_q_entry *mid_entry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 struct cifsSesInfo *ses;
119 struct cifsTconInfo *tcon;
120 int i;
121 int length = 0;
Steve Frenchffdd6e42007-06-24 21:15:44 +0000122 char *original_buf = buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123
124 *beginBuffer = buf + offset;
125
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 length =
127 sprintf(buf,
128 "Display Internal CIFS Data Structures for Debugging\n"
129 "---------------------------------------------------\n");
130 buf += length;
Steve French221601c2007-06-05 20:35:06 +0000131 length = sprintf(buf, "CIFS Version %s\n", CIFS_VERSION);
Steve French6c91d362005-04-28 22:41:06 -0700132 buf += length;
Steve French221601c2007-06-05 20:35:06 +0000133 length = sprintf(buf,
134 "Active VFS Requests: %d\n", GlobalTotalActiveXid);
Steve French131afd02005-10-07 09:51:05 -0700135 buf += length;
Steve French6c91d362005-04-28 22:41:06 -0700136 length = sprintf(buf, "Servers:");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137 buf += length;
138
139 i = 0;
140 read_lock(&GlobalSMBSeslock);
141 list_for_each(tmp, &GlobalSMBSessionList) {
142 i++;
143 ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
Steve French221601c2007-06-05 20:35:06 +0000144 if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
Steve French433dc242005-04-28 22:41:08 -0700145 (ses->serverNOS == NULL)) {
Steve Frenchbd2abf12007-01-21 23:19:01 +0000146 buf += sprintf(buf, "\nentry for %s not fully "
147 "displayed\n\t", ses->serverName);
Steve French433dc242005-04-28 22:41:08 -0700148 } else {
149 length =
150 sprintf(buf,
Steve French221601c2007-06-05 20:35:06 +0000151 "\n%d) Name: %s Domain: %s Mounts: %d OS:"
152 " %s \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
153 " session status: %d\t",
Steve Frenchb8643e12005-04-28 22:41:07 -0700154 i, ses->serverName, ses->serverDomain,
155 atomic_read(&ses->inUse),
156 ses->serverOS, ses->serverNOS,
Steve French221601c2007-06-05 20:35:06 +0000157 ses->capabilities, ses->status);
Steve French433dc242005-04-28 22:41:08 -0700158 buf += length;
159 }
Steve French221601c2007-06-05 20:35:06 +0000160 if (ses->server) {
161 buf += sprintf(buf, "TCP status: %d\n\tLocal Users To "
162 "Server: %d SecMode: 0x%x Req On Wire: %d",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 ses->server->tcpStatus,
164 atomic_read(&ses->server->socketUseCount),
165 ses->server->secMode,
166 atomic_read(&ses->server->inFlight));
Steve French131afd02005-10-07 09:51:05 -0700167
168#ifdef CONFIG_CIFS_STATS2
Steve French68058e72005-10-10 10:34:22 -0700169 buf += sprintf(buf, " In Send: %d In MaxReq Wait: %d",
Steve French221601c2007-06-05 20:35:06 +0000170 atomic_read(&ses->server->inSend),
Steve French131afd02005-10-07 09:51:05 -0700171 atomic_read(&ses->server->num_waiters));
172#endif
173
Steve French6c91d362005-04-28 22:41:06 -0700174 length = sprintf(buf, "\nMIDs:\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 buf += length;
176
177 spin_lock(&GlobalMid_Lock);
178 list_for_each(tmp1, &ses->server->pending_mid_q) {
179 mid_entry = list_entry(tmp1, struct
180 mid_q_entry,
181 qhead);
Steve French221601c2007-06-05 20:35:06 +0000182 if (mid_entry) {
183 length = sprintf(buf,
184 "State: %d com: %d pid:"
185 " %d tsk: %p mid %d\n",
186 mid_entry->midState,
187 (int)mid_entry->command,
188 mid_entry->pid,
189 mid_entry->tsk,
190 mid_entry->mid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 buf += length;
192 }
193 }
Steve French221601c2007-06-05 20:35:06 +0000194 spin_unlock(&GlobalMid_Lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 }
196
197 }
198 read_unlock(&GlobalSMBSeslock);
199 sprintf(buf, "\n");
200 buf++;
201
Steve French6c91d362005-04-28 22:41:06 -0700202 length = sprintf(buf, "Shares:");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 buf += length;
204
205 i = 0;
206 read_lock(&GlobalSMBSeslock);
207 list_for_each(tmp, &GlobalTreeConnectionList) {
208 __u32 dev_type;
209 i++;
210 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
211 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
212 length =
213 sprintf(buf,
Steve French221601c2007-06-05 20:35:06 +0000214 "\n%d) %s Uses: %d Type: %s DevInfo: 0x%x "
215 "Attributes: 0x%x\nPathComponentMax: %d Status: %d",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 i, tcon->treeName,
217 atomic_read(&tcon->useCount),
218 tcon->nativeFileSystem,
219 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
220 le32_to_cpu(tcon->fsAttrInfo.Attributes),
221 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
222 tcon->tidStatus);
Steve French221601c2007-06-05 20:35:06 +0000223 buf += length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 if (dev_type == FILE_DEVICE_DISK)
225 length = sprintf(buf, " type: DISK ");
226 else if (dev_type == FILE_DEVICE_CD_ROM)
227 length = sprintf(buf, " type: CDROM ");
228 else
229 length =
230 sprintf(buf, " type: %d ", dev_type);
231 buf += length;
Steve French221601c2007-06-05 20:35:06 +0000232 if (tcon->tidStatus == CifsNeedReconnect) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 buf += sprintf(buf, "\tDISCONNECTED ");
234 length += 14;
235 }
236 }
237 read_unlock(&GlobalSMBSeslock);
238
239 length = sprintf(buf, "\n");
240 buf += length;
241
242 /* BB add code to dump additional info such as TCP session info now */
243 /* Now calculate total size of returned data */
244 length = buf - original_buf;
245
Steve French221601c2007-06-05 20:35:06 +0000246 if (offset + count >= length)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 *eof = 1;
Steve French221601c2007-06-05 20:35:06 +0000248 if (length < offset) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 *eof = 1;
250 return 0;
251 } else {
252 length = length - offset;
253 }
254 if (length > count)
255 length = count;
256
257 return length;
258}
259
260#ifdef CONFIG_CIFS_STATS
Steve French1047abc2005-10-11 19:58:06 -0700261
262static int
263cifs_stats_write(struct file *file, const char __user *buffer,
Steve French221601c2007-06-05 20:35:06 +0000264 unsigned long count, void *data)
Steve French1047abc2005-10-11 19:58:06 -0700265{
Steve French221601c2007-06-05 20:35:06 +0000266 char c;
267 int rc;
Steve French1047abc2005-10-11 19:58:06 -0700268 struct list_head *tmp;
269 struct cifsTconInfo *tcon;
270
Steve French221601c2007-06-05 20:35:06 +0000271 rc = get_user(c, buffer);
272 if (rc)
273 return rc;
Steve French1047abc2005-10-11 19:58:06 -0700274
Steve French221601c2007-06-05 20:35:06 +0000275 if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
Steve French1047abc2005-10-11 19:58:06 -0700276 read_lock(&GlobalSMBSeslock);
Steve French4498eed2005-12-03 13:58:57 -0800277#ifdef CONFIG_CIFS_STATS2
278 atomic_set(&totBufAllocCount, 0);
279 atomic_set(&totSmBufAllocCount, 0);
280#endif /* CONFIG_CIFS_STATS2 */
Steve French1047abc2005-10-11 19:58:06 -0700281 list_for_each(tmp, &GlobalTreeConnectionList) {
282 tcon = list_entry(tmp, struct cifsTconInfo,
283 cifsConnectionList);
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_closes, 0);
290 atomic_set(&tcon->num_deletes, 0);
291 atomic_set(&tcon->num_mkdirs, 0);
292 atomic_set(&tcon->num_rmdirs, 0);
293 atomic_set(&tcon->num_renames, 0);
294 atomic_set(&tcon->num_t2renames, 0);
295 atomic_set(&tcon->num_ffirst, 0);
296 atomic_set(&tcon->num_fnext, 0);
297 atomic_set(&tcon->num_fclose, 0);
298 atomic_set(&tcon->num_hardlinks, 0);
299 atomic_set(&tcon->num_symlinks, 0);
300 atomic_set(&tcon->num_locks, 0);
301 }
302 read_unlock(&GlobalSMBSeslock);
303 }
304
Steve French221601c2007-06-05 20:35:06 +0000305 return count;
Steve French1047abc2005-10-11 19:58:06 -0700306}
307
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308static int
309cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
310 int count, int *eof, void *data)
311{
Steve French221601c2007-06-05 20:35:06 +0000312 int item_length, i, length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 struct list_head *tmp;
314 struct cifsTconInfo *tcon;
315
316 *beginBuffer = buf + offset;
317
318 length = sprintf(buf,
319 "Resources in use\nCIFS Session: %d\n",
320 sesInfoAllocCount.counter);
321 buf += length;
Steve French221601c2007-06-05 20:35:06 +0000322 item_length =
323 sprintf(buf, "Share (unique mount targets): %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 tconInfoAllocCount.counter);
325 length += item_length;
Steve French221601c2007-06-05 20:35:06 +0000326 buf += item_length;
327 item_length =
328 sprintf(buf, "SMB Request/Response Buffer: %d Pool size: %d\n",
Steve Frenchb8643e12005-04-28 22:41:07 -0700329 bufAllocCount.counter,
330 cifs_min_rcv + tcpSesAllocCount.counter);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 length += item_length;
332 buf += item_length;
Steve French221601c2007-06-05 20:35:06 +0000333 item_length =
334 sprintf(buf, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
335 smBufAllocCount.counter, cifs_min_small);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 length += item_length;
337 buf += item_length;
Steve French07475ff2005-12-03 14:11:37 -0800338#ifdef CONFIG_CIFS_STATS2
Steve French221601c2007-06-05 20:35:06 +0000339 item_length = sprintf(buf, "Total Large %d Small %d Allocations\n",
Steve French07475ff2005-12-03 14:11:37 -0800340 atomic_read(&totBufAllocCount),
Steve French221601c2007-06-05 20:35:06 +0000341 atomic_read(&totSmBufAllocCount));
Steve French07475ff2005-12-03 14:11:37 -0800342 length += item_length;
343 buf += item_length;
344#endif /* CONFIG_CIFS_STATS2 */
345
Steve French221601c2007-06-05 20:35:06 +0000346 item_length =
347 sprintf(buf, "Operations (MIDs): %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 midCount.counter);
349 length += item_length;
350 buf += item_length;
351 item_length = sprintf(buf,
352 "\n%d session %d share reconnects\n",
Steve French221601c2007-06-05 20:35:06 +0000353 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 length += item_length;
355 buf += item_length;
356
357 item_length = sprintf(buf,
358 "Total vfs operations: %d maximum at one time: %d\n",
Steve French221601c2007-06-05 20:35:06 +0000359 GlobalCurrentXid, GlobalMaxActiveXid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 length += item_length;
361 buf += item_length;
362
363 i = 0;
364 read_lock(&GlobalSMBSeslock);
365 list_for_each(tmp, &GlobalTreeConnectionList) {
366 i++;
367 tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
Steve French221601c2007-06-05 20:35:06 +0000368 item_length = sprintf(buf, "\n%d) %s", i, tcon->treeName);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 buf += item_length;
370 length += item_length;
Steve French221601c2007-06-05 20:35:06 +0000371 if (tcon->tidStatus == CifsNeedReconnect) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 buf += sprintf(buf, "\tDISCONNECTED ");
373 length += 14;
374 }
Steve Frencha5a2b482005-08-20 21:42:53 -0700375 item_length = sprintf(buf, "\nSMBs: %d Oplock Breaks: %d",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 atomic_read(&tcon->num_smbs_sent),
377 atomic_read(&tcon->num_oplock_brks));
378 buf += item_length;
379 length += item_length;
Steve French0ae0efa2005-10-10 10:57:19 -0700380 item_length = sprintf(buf, "\nReads: %d Bytes: %lld",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 atomic_read(&tcon->num_reads),
382 (long long)(tcon->bytes_read));
383 buf += item_length;
384 length += item_length;
Steve Frencha5a2b482005-08-20 21:42:53 -0700385 item_length = sprintf(buf, "\nWrites: %d Bytes: %lld",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 atomic_read(&tcon->num_writes),
387 (long long)(tcon->bytes_written));
Steve French221601c2007-06-05 20:35:06 +0000388 buf += item_length;
389 length += item_length;
390 item_length = sprintf(buf,
Steve Frencha5a2b482005-08-20 21:42:53 -0700391 "\nLocks: %d HardLinks: %d Symlinks: %d",
Steve French221601c2007-06-05 20:35:06 +0000392 atomic_read(&tcon->num_locks),
Steve Frencha5a2b482005-08-20 21:42:53 -0700393 atomic_read(&tcon->num_hardlinks),
394 atomic_read(&tcon->num_symlinks));
Steve French221601c2007-06-05 20:35:06 +0000395 buf += item_length;
396 length += item_length;
Steve Frencha5a2b482005-08-20 21:42:53 -0700397
398 item_length = sprintf(buf, "\nOpens: %d Closes: %d Deletes: %d",
399 atomic_read(&tcon->num_opens),
400 atomic_read(&tcon->num_closes),
401 atomic_read(&tcon->num_deletes));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 buf += item_length;
403 length += item_length;
Steve Frencha5a2b482005-08-20 21:42:53 -0700404 item_length = sprintf(buf, "\nMkdirs: %d Rmdirs: %d",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 atomic_read(&tcon->num_mkdirs),
406 atomic_read(&tcon->num_rmdirs));
407 buf += item_length;
408 length += item_length;
Steve Frencha5a2b482005-08-20 21:42:53 -0700409 item_length = sprintf(buf, "\nRenames: %d T2 Renames %d",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 atomic_read(&tcon->num_renames),
411 atomic_read(&tcon->num_t2renames));
412 buf += item_length;
413 length += item_length;
Steve Frencha5a2b482005-08-20 21:42:53 -0700414 item_length = sprintf(buf, "\nFindFirst: %d FNext %d FClose %d",
Steve French0c0ff092005-06-23 19:31:17 -0500415 atomic_read(&tcon->num_ffirst),
416 atomic_read(&tcon->num_fnext),
417 atomic_read(&tcon->num_fclose));
418 buf += item_length;
419 length += item_length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 }
421 read_unlock(&GlobalSMBSeslock);
422
Steve French221601c2007-06-05 20:35:06 +0000423 buf += sprintf(buf, "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 length++;
425
Steve French221601c2007-06-05 20:35:06 +0000426 if (offset + count >= length)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 *eof = 1;
Steve French221601c2007-06-05 20:35:06 +0000428 if (length < offset) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 *eof = 1;
430 return 0;
431 } else {
432 length = length - offset;
433 }
434 if (length > count)
435 length = count;
Steve French221601c2007-06-05 20:35:06 +0000436
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 return length;
438}
439#endif
440
441static struct proc_dir_entry *proc_fs_cifs;
442read_proc_t cifs_txanchor_read;
443static read_proc_t cifsFYI_read;
444static write_proc_t cifsFYI_write;
445static read_proc_t oplockEnabled_read;
446static write_proc_t oplockEnabled_write;
447static read_proc_t lookupFlag_read;
448static write_proc_t lookupFlag_write;
449static read_proc_t traceSMB_read;
450static write_proc_t traceSMB_write;
451static read_proc_t multiuser_mount_read;
452static write_proc_t multiuser_mount_write;
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000453static read_proc_t security_flags_read;
454static write_proc_t security_flags_write;
Steve French39798772006-05-31 22:40:51 +0000455/* static read_proc_t ntlmv2_enabled_read;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456static write_proc_t ntlmv2_enabled_write;
457static read_proc_t packet_signing_enabled_read;
Steve French39798772006-05-31 22:40:51 +0000458static write_proc_t packet_signing_enabled_write;*/
Steve Frenchec637e32005-12-12 20:53:18 -0800459static read_proc_t experimEnabled_read;
460static write_proc_t experimEnabled_write;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461static read_proc_t linuxExtensionsEnabled_read;
462static write_proc_t linuxExtensionsEnabled_write;
463
464void
465cifs_proc_init(void)
466{
467 struct proc_dir_entry *pde;
468
469 proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
470 if (proc_fs_cifs == NULL)
471 return;
472
473 proc_fs_cifs->owner = THIS_MODULE;
474 create_proc_read_entry("DebugData", 0, proc_fs_cifs,
475 cifs_debug_data_read, NULL);
476
477#ifdef CONFIG_CIFS_STATS
Steve French1047abc2005-10-11 19:58:06 -0700478 pde = create_proc_read_entry("Stats", 0, proc_fs_cifs,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 cifs_stats_read, NULL);
Steve French1047abc2005-10-11 19:58:06 -0700480 if (pde)
481 pde->write_proc = cifs_stats_write;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482#endif
483 pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
484 cifsFYI_read, NULL);
485 if (pde)
486 pde->write_proc = cifsFYI_write;
487
488 pde =
489 create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
490 traceSMB_read, NULL);
491 if (pde)
492 pde->write_proc = traceSMB_write;
493
494 pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
495 oplockEnabled_read, NULL);
496 if (pde)
497 pde->write_proc = oplockEnabled_write;
498
Steve French0c0ff092005-06-23 19:31:17 -0500499 pde = create_proc_read_entry("Experimental", 0, proc_fs_cifs,
Steve Frenchec637e32005-12-12 20:53:18 -0800500 experimEnabled_read, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 if (pde)
Steve Frenchec637e32005-12-12 20:53:18 -0800502 pde->write_proc = experimEnabled_write;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503
504 pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
505 linuxExtensionsEnabled_read, NULL);
506 if (pde)
507 pde->write_proc = linuxExtensionsEnabled_write;
508
509 pde =
510 create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
511 multiuser_mount_read, NULL);
512 if (pde)
513 pde->write_proc = multiuser_mount_write;
514
515 pde =
Steve French7c7b25b2006-06-01 19:20:10 +0000516 create_proc_read_entry("SecurityFlags", 0, proc_fs_cifs,
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000517 security_flags_read, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 if (pde)
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000519 pde->write_proc = security_flags_write;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520
521 pde =
522 create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
523 lookupFlag_read, NULL);
524 if (pde)
525 pde->write_proc = lookupFlag_write;
526
Steve French39798772006-05-31 22:40:51 +0000527/* pde =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
529 ntlmv2_enabled_read, NULL);
530 if (pde)
531 pde->write_proc = ntlmv2_enabled_write;
532
533 pde =
534 create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
535 packet_signing_enabled_read, NULL);
536 if (pde)
Steve French39798772006-05-31 22:40:51 +0000537 pde->write_proc = packet_signing_enabled_write;*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538}
539
540void
541cifs_proc_clean(void)
542{
543 if (proc_fs_cifs == NULL)
544 return;
545
546 remove_proc_entry("DebugData", proc_fs_cifs);
547 remove_proc_entry("cifsFYI", proc_fs_cifs);
548 remove_proc_entry("traceSMB", proc_fs_cifs);
549#ifdef CONFIG_CIFS_STATS
550 remove_proc_entry("Stats", proc_fs_cifs);
551#endif
552 remove_proc_entry("MultiuserMount", proc_fs_cifs);
553 remove_proc_entry("OplockEnabled", proc_fs_cifs);
Steve French39798772006-05-31 22:40:51 +0000554/* remove_proc_entry("NTLMV2Enabled",proc_fs_cifs); */
Steve French221601c2007-06-05 20:35:06 +0000555 remove_proc_entry("SecurityFlags", proc_fs_cifs);
556/* remove_proc_entry("PacketSigningEnabled", proc_fs_cifs); */
557 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
558 remove_proc_entry("Experimental", proc_fs_cifs);
559 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560 remove_proc_entry("cifs", proc_root_fs);
561}
562
563static int
564cifsFYI_read(char *page, char **start, off_t off, int count,
565 int *eof, void *data)
566{
567 int len;
568
569 len = sprintf(page, "%d\n", cifsFYI);
570
571 len -= off;
572 *start = page + off;
573
574 if (len > count)
575 len = count;
576 else
577 *eof = 1;
578
579 if (len < 0)
580 len = 0;
581
582 return len;
583}
584static int
585cifsFYI_write(struct file *file, const char __user *buffer,
586 unsigned long count, void *data)
587{
588 char c;
589 int rc;
590
591 rc = get_user(c, buffer);
592 if (rc)
593 return rc;
594 if (c == '0' || c == 'n' || c == 'N')
595 cifsFYI = 0;
596 else if (c == '1' || c == 'y' || c == 'Y')
597 cifsFYI = 1;
Steve French221601c2007-06-05 20:35:06 +0000598 else if ((c > '1') && (c <= '9'))
Steve French1047abc2005-10-11 19:58:06 -0700599 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600
601 return count;
602}
603
604static int
605oplockEnabled_read(char *page, char **start, off_t off,
606 int count, int *eof, void *data)
607{
608 int len;
609
610 len = sprintf(page, "%d\n", oplockEnabled);
611
612 len -= off;
613 *start = page + off;
614
615 if (len > count)
616 len = count;
617 else
618 *eof = 1;
619
620 if (len < 0)
621 len = 0;
622
623 return len;
624}
625static int
626oplockEnabled_write(struct file *file, const char __user *buffer,
627 unsigned long count, void *data)
628{
629 char c;
630 int rc;
631
632 rc = get_user(c, buffer);
633 if (rc)
634 return rc;
635 if (c == '0' || c == 'n' || c == 'N')
636 oplockEnabled = 0;
637 else if (c == '1' || c == 'y' || c == 'Y')
638 oplockEnabled = 1;
639
640 return count;
641}
642
643static int
Steve Frenchec637e32005-12-12 20:53:18 -0800644experimEnabled_read(char *page, char **start, off_t off,
Steve French221601c2007-06-05 20:35:06 +0000645 int count, int *eof, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646{
Steve French221601c2007-06-05 20:35:06 +0000647 int len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648
Steve French221601c2007-06-05 20:35:06 +0000649 len = sprintf(page, "%d\n", experimEnabled);
Steve Frenchec637e32005-12-12 20:53:18 -0800650
Steve French221601c2007-06-05 20:35:06 +0000651 len -= off;
652 *start = page + off;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653
Steve French221601c2007-06-05 20:35:06 +0000654 if (len > count)
655 len = count;
656 else
657 *eof = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658
Steve French221601c2007-06-05 20:35:06 +0000659 if (len < 0)
660 len = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661
Steve French221601c2007-06-05 20:35:06 +0000662 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663}
664static int
Steve Frenchec637e32005-12-12 20:53:18 -0800665experimEnabled_write(struct file *file, const char __user *buffer,
Steve French221601c2007-06-05 20:35:06 +0000666 unsigned long count, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667{
Steve Frenchec637e32005-12-12 20:53:18 -0800668 char c;
669 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670
Steve Frenchec637e32005-12-12 20:53:18 -0800671 rc = get_user(c, buffer);
672 if (rc)
673 return rc;
674 if (c == '0' || c == 'n' || c == 'N')
675 experimEnabled = 0;
676 else if (c == '1' || c == 'y' || c == 'Y')
677 experimEnabled = 1;
678 else if (c == '2')
679 experimEnabled = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680
Steve Frenchec637e32005-12-12 20:53:18 -0800681 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682}
683
684static int
685linuxExtensionsEnabled_read(char *page, char **start, off_t off,
Steve French221601c2007-06-05 20:35:06 +0000686 int count, int *eof, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687{
Steve French221601c2007-06-05 20:35:06 +0000688 int len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689
Steve French221601c2007-06-05 20:35:06 +0000690 len = sprintf(page, "%d\n", linuxExtEnabled);
691 len -= off;
692 *start = page + off;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693
Steve French221601c2007-06-05 20:35:06 +0000694 if (len > count)
695 len = count;
696 else
697 *eof = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698
Steve French221601c2007-06-05 20:35:06 +0000699 if (len < 0)
700 len = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701
Steve French221601c2007-06-05 20:35:06 +0000702 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703}
704static int
705linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
Steve French221601c2007-06-05 20:35:06 +0000706 unsigned long count, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707{
Steve French221601c2007-06-05 20:35:06 +0000708 char c;
709 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710
Steve French221601c2007-06-05 20:35:06 +0000711 rc = get_user(c, buffer);
712 if (rc)
713 return rc;
714 if (c == '0' || c == 'n' || c == 'N')
715 linuxExtEnabled = 0;
716 else if (c == '1' || c == 'y' || c == 'Y')
717 linuxExtEnabled = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718
Steve French221601c2007-06-05 20:35:06 +0000719 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720}
721
722
723static int
724lookupFlag_read(char *page, char **start, off_t off,
Steve French221601c2007-06-05 20:35:06 +0000725 int count, int *eof, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726{
727 int len;
728
729 len = sprintf(page, "%d\n", lookupCacheEnabled);
730
731 len -= off;
732 *start = page + off;
733
734 if (len > count)
735 len = count;
736 else
737 *eof = 1;
738
739 if (len < 0)
740 len = 0;
741
742 return len;
743}
744static int
745lookupFlag_write(struct file *file, const char __user *buffer,
746 unsigned long count, void *data)
747{
748 char c;
749 int rc;
750
751 rc = get_user(c, buffer);
752 if (rc)
753 return rc;
754 if (c == '0' || c == 'n' || c == 'N')
755 lookupCacheEnabled = 0;
756 else if (c == '1' || c == 'y' || c == 'Y')
757 lookupCacheEnabled = 1;
758
759 return count;
760}
761static int
762traceSMB_read(char *page, char **start, off_t off, int count,
763 int *eof, void *data)
764{
765 int len;
766
767 len = sprintf(page, "%d\n", traceSMB);
768
769 len -= off;
770 *start = page + off;
771
772 if (len > count)
773 len = count;
774 else
775 *eof = 1;
776
777 if (len < 0)
778 len = 0;
779
780 return len;
781}
782static int
783traceSMB_write(struct file *file, const char __user *buffer,
784 unsigned long count, void *data)
785{
786 char c;
787 int rc;
788
789 rc = get_user(c, buffer);
790 if (rc)
791 return rc;
792 if (c == '0' || c == 'n' || c == 'N')
793 traceSMB = 0;
794 else if (c == '1' || c == 'y' || c == 'Y')
795 traceSMB = 1;
796
797 return count;
798}
799
800static int
801multiuser_mount_read(char *page, char **start, off_t off,
802 int count, int *eof, void *data)
803{
804 int len;
805
806 len = sprintf(page, "%d\n", multiuser_mount);
807
808 len -= off;
809 *start = page + off;
810
811 if (len > count)
812 len = count;
813 else
814 *eof = 1;
815
816 if (len < 0)
817 len = 0;
818
819 return len;
820}
821static int
822multiuser_mount_write(struct file *file, const char __user *buffer,
823 unsigned long count, void *data)
824{
825 char c;
826 int rc;
827
828 rc = get_user(c, buffer);
829 if (rc)
830 return rc;
831 if (c == '0' || c == 'n' || c == 'N')
832 multiuser_mount = 0;
833 else if (c == '1' || c == 'y' || c == 'Y')
834 multiuser_mount = 1;
835
836 return count;
837}
838
839static int
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000840security_flags_read(char *page, char **start, off_t off,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841 int count, int *eof, void *data)
842{
843 int len;
844
Steve French39798772006-05-31 22:40:51 +0000845 len = sprintf(page, "0x%x\n", extended_security);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846
847 len -= off;
848 *start = page + off;
849
850 if (len > count)
851 len = count;
852 else
853 *eof = 1;
854
855 if (len < 0)
856 len = 0;
857
858 return len;
859}
860static int
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000861security_flags_write(struct file *file, const char __user *buffer,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862 unsigned long count, void *data)
863{
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000864 unsigned int flags;
865 char flags_string[12];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866 char c;
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000867
Steve French221601c2007-06-05 20:35:06 +0000868 if ((count < 1) || (count > 11))
Steve French39798772006-05-31 22:40:51 +0000869 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000871 memset(flags_string, 0, 12);
Steve French39798772006-05-31 22:40:51 +0000872
Steve French221601c2007-06-05 20:35:06 +0000873 if (copy_from_user(flags_string, buffer, count))
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000874 return -EFAULT;
Steve French39798772006-05-31 22:40:51 +0000875
Steve French221601c2007-06-05 20:35:06 +0000876 if (count < 3) {
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000877 /* single char or single char followed by null */
878 c = flags_string[0];
879 if (c == '0' || c == 'n' || c == 'N')
880 extended_security = CIFSSEC_DEF; /* default */
881 else if (c == '1' || c == 'y' || c == 'Y')
882 extended_security = CIFSSEC_MAX;
883 return count;
884 }
885 /* else we have a number */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000887 flags = simple_strtoul(flags_string, NULL, 0);
888
Steve French221601c2007-06-05 20:35:06 +0000889 cFYI(1, ("sec flags 0x%x", flags));
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000890
Steve French221601c2007-06-05 20:35:06 +0000891 if (flags <= 0) {
892 cERROR(1, ("invalid security flags %s", flags_string));
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000893 return -EINVAL;
894 }
895
Steve French221601c2007-06-05 20:35:06 +0000896 if (flags & ~CIFSSEC_MASK) {
897 cERROR(1, ("attempt to set unsupported security flags 0x%x",
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000898 flags & ~CIFSSEC_MASK));
899 return -EINVAL;
900 }
901 /* flags look ok - update the global security flags for cifs module */
902 extended_security = flags;
Steve French762e5ab2007-06-28 18:41:42 +0000903 if (extended_security & CIFSSEC_MUST_SIGN) {
904 /* requiring signing implies signing is allowed */
905 extended_security |= CIFSSEC_MAY_SIGN;
906 cFYI(1, ("packet signing now required"));
907 } else if ((extended_security & CIFSSEC_MAY_SIGN) == 0) {
908 cFYI(1, ("packet signing disabled"));
909 }
910 /* BB should we turn on MAY flags for other MUST options? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911 return count;
912}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913#endif