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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{
Andy Shevchenko0b456f02014-08-27 16:49:44 +030037 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
Andy Shevchenko55d83e02014-08-27 16:49:43 +030038 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
39 data, length, true);
Linus Torvalds1da177e2005-04-16 15:20:36 -070040}
41
Joe Perchesf96637b2013-05-04 22:12:25 -050042#ifdef CONFIG_CIFS_DEBUG
43void cifs_vfs_err(const char *fmt, ...)
44{
45 struct va_format vaf;
46 va_list args;
47
48 va_start(args, fmt);
49
50 vaf.fmt = fmt;
51 vaf.va = &args;
52
Andy Shevchenko0b456f02014-08-27 16:49:44 +030053 pr_err("CIFS VFS: %pV", &vaf);
Joe Perchesf96637b2013-05-04 22:12:25 -050054
55 va_end(args);
56}
57#endif
58
Pavel Shilovskyd4e48542012-03-23 14:28:02 -040059void cifs_dump_detail(void *buf)
Steve French39798772006-05-31 22:40:51 +000060{
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +040061#ifdef CONFIG_CIFS_DEBUG2
Pavel Shilovskyd4e48542012-03-23 14:28:02 -040062 struct smb_hdr *smb = (struct smb_hdr *)buf;
63
Joe Perchesf96637b2013-05-04 22:12:25 -050064 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
65 smb->Command, smb->Status.CifsError,
66 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
67 cifs_dbg(VFS, "smb buf %p len %u\n", smb, smbCalcSize(smb));
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +040068#endif /* CONFIG_CIFS_DEBUG2 */
Steve French39798772006-05-31 22:40:51 +000069}
70
Steve Frenchffdd6e42007-06-24 21:15:44 +000071void cifs_dump_mids(struct TCP_Server_Info *server)
Steve French39798772006-05-31 22:40:51 +000072{
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +040073#ifdef CONFIG_CIFS_DEBUG2
Steve French39798772006-05-31 22:40:51 +000074 struct list_head *tmp;
Steve Frenchffdd6e42007-06-24 21:15:44 +000075 struct mid_q_entry *mid_entry;
Steve French39798772006-05-31 22:40:51 +000076
Steve French221601c2007-06-05 20:35:06 +000077 if (server == NULL)
Steve French39798772006-05-31 22:40:51 +000078 return;
79
Joe Perchesf96637b2013-05-04 22:12:25 -050080 cifs_dbg(VFS, "Dump pending requests:\n");
Steve French39798772006-05-31 22:40:51 +000081 spin_lock(&GlobalMid_Lock);
82 list_for_each(tmp, &server->pending_mid_q) {
83 mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
Joe Perchesf96637b2013-05-04 22:12:25 -050084 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
85 mid_entry->mid_state,
86 le16_to_cpu(mid_entry->command),
87 mid_entry->pid,
88 mid_entry->callback_data,
89 mid_entry->mid);
Steve French39798772006-05-31 22:40:51 +000090#ifdef CONFIG_CIFS_STATS2
Joe Perchesf96637b2013-05-04 22:12:25 -050091 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
92 mid_entry->large_buf,
93 mid_entry->resp_buf,
94 mid_entry->when_received,
95 jiffies);
Steve French39798772006-05-31 22:40:51 +000096#endif /* STATS2 */
Joe Perchesf96637b2013-05-04 22:12:25 -050097 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
98 mid_entry->multiRsp, mid_entry->multiEnd);
Steve Frenchad8b15f2008-08-08 21:10:16 +000099 if (mid_entry->resp_buf) {
100 cifs_dump_detail(mid_entry->resp_buf);
101 cifs_dump_mem("existing buf: ",
102 mid_entry->resp_buf, 62);
Steve French39798772006-05-31 22:40:51 +0000103 }
104 }
105 spin_unlock(&GlobalMid_Lock);
Steve French39798772006-05-31 22:40:51 +0000106#endif /* CONFIG_CIFS_DEBUG2 */
Pavel Shilovsky8aa26f32012-05-17 13:25:35 +0400107}
Steve French39798772006-05-31 22:40:51 +0000108
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109#ifdef CONFIG_PROC_FS
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000110static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111{
Jeff Laytonf1987b42008-11-15 11:12:47 -0500112 struct list_head *tmp1, *tmp2, *tmp3;
Steve Frenchffdd6e42007-06-24 21:15:44 +0000113 struct mid_q_entry *mid_entry;
Jeff Layton14fbf502008-11-14 13:53:46 -0500114 struct TCP_Server_Info *server;
Steve French96daf2b2011-05-27 04:34:02 +0000115 struct cifs_ses *ses;
116 struct cifs_tcon *tcon;
Jeff Laytonf1987b42008-11-15 11:12:47 -0500117 int i, j;
118 __u32 dev_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000120 seq_puts(m,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 "Display Internal CIFS Data Structures for Debugging\n"
122 "---------------------------------------------------\n");
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000123 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
Jeff Laytonca40b712011-01-07 11:30:29 -0500124 seq_printf(m, "Features:");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530125#ifdef CONFIG_CIFS_DFS_UPCALL
Jeff Laytonca40b712011-01-07 11:30:29 -0500126 seq_printf(m, " dfs");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530127#endif
128#ifdef CONFIG_CIFS_FSCACHE
Jeff Laytonca40b712011-01-07 11:30:29 -0500129 seq_printf(m, " fscache");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530130#endif
131#ifdef CONFIG_CIFS_WEAK_PW_HASH
Jeff Laytonca40b712011-01-07 11:30:29 -0500132 seq_printf(m, " lanman");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530133#endif
134#ifdef CONFIG_CIFS_POSIX
Jeff Laytonca40b712011-01-07 11:30:29 -0500135 seq_printf(m, " posix");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530136#endif
137#ifdef CONFIG_CIFS_UPCALL
Jeff Laytonca40b712011-01-07 11:30:29 -0500138 seq_printf(m, " spnego");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530139#endif
140#ifdef CONFIG_CIFS_XATTR
Jeff Laytonca40b712011-01-07 11:30:29 -0500141 seq_printf(m, " xattr");
142#endif
143#ifdef CONFIG_CIFS_ACL
144 seq_printf(m, " acl");
Suresh Jayaramanf5799032010-07-30 18:25:56 +0530145#endif
146 seq_putc(m, '\n');
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000147 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
148 seq_printf(m, "Servers:");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149
150 i = 0;
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530151 spin_lock(&cifs_tcp_ses_lock);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500152 list_for_each(tmp1, &cifs_tcp_ses_list) {
153 server = list_entry(tmp1, struct TCP_Server_Info,
Jeff Layton14fbf502008-11-14 13:53:46 -0500154 tcp_ses_list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 i++;
Jeff Layton14fbf502008-11-14 13:53:46 -0500156 list_for_each(tmp2, &server->smb_ses_list) {
Steve French96daf2b2011-05-27 04:34:02 +0000157 ses = list_entry(tmp2, struct cifs_ses,
Jeff Layton14fbf502008-11-14 13:53:46 -0500158 smb_ses_list);
159 if ((ses->serverDomain == NULL) ||
160 (ses->serverOS == NULL) ||
161 (ses->serverNOS == NULL)) {
Jeff Laytonf1987b42008-11-15 11:12:47 -0500162 seq_printf(m, "\n%d) entry for %s not fully "
163 "displayed\n\t", i, ses->serverName);
Jeff Layton14fbf502008-11-14 13:53:46 -0500164 } else {
165 seq_printf(m,
Jeff Laytonf1987b42008-11-15 11:12:47 -0500166 "\n%d) Name: %s Domain: %s Uses: %d OS:"
167 " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB"
Steve French221601c2007-06-05 20:35:06 +0000168 " session status: %d\t",
Steve Frenchb8643e12005-04-28 22:41:07 -0700169 i, ses->serverName, ses->serverDomain,
Jeff Layton14fbf502008-11-14 13:53:46 -0500170 ses->ses_count, ses->serverOS, ses->serverNOS,
Steve French221601c2007-06-05 20:35:06 +0000171 ses->capabilities, ses->status);
Jeff Layton14fbf502008-11-14 13:53:46 -0500172 }
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000173 seq_printf(m, "TCP status: %d\n\tLocal Users To "
Jeff Layton14fbf502008-11-14 13:53:46 -0500174 "Server: %d SecMode: 0x%x Req On Wire: %d",
175 server->tcpStatus, server->srv_count,
Pavel Shilovskyfc40f9c2012-02-17 17:09:12 +0300176 server->sec_mode, in_flight(server));
Steve French131afd0b2005-10-07 09:51:05 -0700177
178#ifdef CONFIG_CIFS_STATS2
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000179 seq_printf(m, " In Send: %d In MaxReq Wait: %d",
Steve French789e6662011-08-09 18:44:44 +0000180 atomic_read(&server->in_send),
Jeff Layton14fbf502008-11-14 13:53:46 -0500181 atomic_read(&server->num_waiters));
Steve French131afd0b2005-10-07 09:51:05 -0700182#endif
183
Jeff Laytonf1987b42008-11-15 11:12:47 -0500184 seq_puts(m, "\n\tShares:");
185 j = 0;
186 list_for_each(tmp3, &ses->tcon_list) {
Steve French96daf2b2011-05-27 04:34:02 +0000187 tcon = list_entry(tmp3, struct cifs_tcon,
Jeff Laytonf1987b42008-11-15 11:12:47 -0500188 tcon_list);
189 ++j;
190 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
191 seq_printf(m, "\n\t%d) %s Mounts: %d ", j,
192 tcon->treeName, tcon->tc_count);
193 if (tcon->nativeFileSystem) {
194 seq_printf(m, "Type: %s ",
195 tcon->nativeFileSystem);
196 }
197 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
Steve French59b04c52014-08-02 21:16:48 -0500198 "\n\tPathComponentMax: %d Status: %d",
Jeff Laytonf1987b42008-11-15 11:12:47 -0500199 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
200 le32_to_cpu(tcon->fsAttrInfo.Attributes),
201 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
202 tcon->tidStatus);
203 if (dev_type == FILE_DEVICE_DISK)
204 seq_puts(m, " type: DISK ");
205 else if (dev_type == FILE_DEVICE_CD_ROM)
206 seq_puts(m, " type: CDROM ");
207 else
208 seq_printf(m, " type: %d ", dev_type);
Steve French769ee6a2013-06-19 14:15:30 -0500209 if (server->ops->dump_share_caps)
210 server->ops->dump_share_caps(m, tcon);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500211
212 if (tcon->need_reconnect)
213 seq_puts(m, "\tDISCONNECTED ");
214 seq_putc(m, '\n');
215 }
216
217 seq_puts(m, "\n\tMIDs:\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218
219 spin_lock(&GlobalMid_Lock);
Jeff Layton14fbf502008-11-14 13:53:46 -0500220 list_for_each(tmp3, &server->pending_mid_q) {
Jeff Laytonf1987b42008-11-15 11:12:47 -0500221 mid_entry = list_entry(tmp3, struct mid_q_entry,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 qhead);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500223 seq_printf(m, "\tState: %d com: %d pid:"
Pavel Shilovsky7c9421e2012-03-23 14:28:03 -0400224 " %d cbdata: %p mid %llu\n",
225 mid_entry->mid_state,
226 le16_to_cpu(mid_entry->command),
227 mid_entry->pid,
228 mid_entry->callback_data,
229 mid_entry->mid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 }
Steve French221601c2007-06-05 20:35:06 +0000231 spin_unlock(&GlobalMid_Lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 }
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530234 spin_unlock(&cifs_tcp_ses_lock);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000235 seq_putc(m, '\n');
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 /* BB add code to dump additional info such as TCP session info now */
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000238 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239}
240
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000241static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
242{
243 return single_open(file, cifs_debug_data_proc_show, NULL);
244}
Steve French1047abc2005-10-11 19:58:06 -0700245
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000246static const struct file_operations cifs_debug_data_proc_fops = {
247 .owner = THIS_MODULE,
248 .open = cifs_debug_data_proc_open,
249 .read = seq_read,
250 .llseek = seq_lseek,
251 .release = single_release,
252};
253
254#ifdef CONFIG_CIFS_STATS
255static ssize_t cifs_stats_proc_write(struct file *file,
256 const char __user *buffer, size_t count, loff_t *ppos)
Steve French1047abc2005-10-11 19:58:06 -0700257{
Steve French221601c2007-06-05 20:35:06 +0000258 char c;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300259 bool bv;
Steve French221601c2007-06-05 20:35:06 +0000260 int rc;
Jeff Laytonf1987b42008-11-15 11:12:47 -0500261 struct list_head *tmp1, *tmp2, *tmp3;
262 struct TCP_Server_Info *server;
Steve French96daf2b2011-05-27 04:34:02 +0000263 struct cifs_ses *ses;
264 struct cifs_tcon *tcon;
Steve French1047abc2005-10-11 19:58:06 -0700265
Steve French221601c2007-06-05 20:35:06 +0000266 rc = get_user(c, buffer);
267 if (rc)
268 return rc;
Steve French1047abc2005-10-11 19:58:06 -0700269
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300270 if (strtobool(&c, &bv) == 0) {
Steve French4498eed52005-12-03 13:58:57 -0800271#ifdef CONFIG_CIFS_STATS2
272 atomic_set(&totBufAllocCount, 0);
273 atomic_set(&totSmBufAllocCount, 0);
274#endif /* CONFIG_CIFS_STATS2 */
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530275 spin_lock(&cifs_tcp_ses_lock);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500276 list_for_each(tmp1, &cifs_tcp_ses_list) {
277 server = list_entry(tmp1, struct TCP_Server_Info,
278 tcp_ses_list);
Steve Frenchc2b33822008-11-17 03:57:13 +0000279 list_for_each(tmp2, &server->smb_ses_list) {
Steve French96daf2b2011-05-27 04:34:02 +0000280 ses = list_entry(tmp2, struct cifs_ses,
Steve Frenchc2b33822008-11-17 03:57:13 +0000281 smb_ses_list);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500282 list_for_each(tmp3, &ses->tcon_list) {
283 tcon = list_entry(tmp3,
Steve French96daf2b2011-05-27 04:34:02 +0000284 struct cifs_tcon,
Jeff Laytonf1987b42008-11-15 11:12:47 -0500285 tcon_list);
286 atomic_set(&tcon->num_smbs_sent, 0);
Pavel Shilovsky44c58182012-05-28 14:16:31 +0400287 if (server->ops->clear_stats)
288 server->ops->clear_stats(tcon);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500289 }
290 }
Steve French1047abc2005-10-11 19:58:06 -0700291 }
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530292 spin_unlock(&cifs_tcp_ses_lock);
Steve French1047abc2005-10-11 19:58:06 -0700293 }
294
Steve French221601c2007-06-05 20:35:06 +0000295 return count;
Steve French1047abc2005-10-11 19:58:06 -0700296}
297
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000298static int cifs_stats_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299{
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000300 int i;
Jeff Laytonf1987b42008-11-15 11:12:47 -0500301 struct list_head *tmp1, *tmp2, *tmp3;
302 struct TCP_Server_Info *server;
Steve French96daf2b2011-05-27 04:34:02 +0000303 struct cifs_ses *ses;
304 struct cifs_tcon *tcon;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000306 seq_printf(m,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 "Resources in use\nCIFS Session: %d\n",
308 sesInfoAllocCount.counter);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000309 seq_printf(m, "Share (unique mount targets): %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310 tconInfoAllocCount.counter);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000311 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
Steve Frenchb8643e12005-04-28 22:41:07 -0700312 bufAllocCount.counter,
313 cifs_min_rcv + tcpSesAllocCount.counter);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000314 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
Steve French221601c2007-06-05 20:35:06 +0000315 smBufAllocCount.counter, cifs_min_small);
Steve French07475ff2005-12-03 14:11:37 -0800316#ifdef CONFIG_CIFS_STATS2
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000317 seq_printf(m, "Total Large %d Small %d Allocations\n",
Steve French07475ff2005-12-03 14:11:37 -0800318 atomic_read(&totBufAllocCount),
Steve French221601c2007-06-05 20:35:06 +0000319 atomic_read(&totSmBufAllocCount));
Steve French07475ff2005-12-03 14:11:37 -0800320#endif /* CONFIG_CIFS_STATS2 */
321
Jeff Layton80975312011-01-11 07:24:02 -0500322 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000323 seq_printf(m,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 "\n%d session %d share reconnects\n",
Steve French221601c2007-06-05 20:35:06 +0000325 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000327 seq_printf(m,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 "Total vfs operations: %d maximum at one time: %d\n",
Steve French221601c2007-06-05 20:35:06 +0000329 GlobalCurrentXid, GlobalMaxActiveXid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330
331 i = 0;
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530332 spin_lock(&cifs_tcp_ses_lock);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500333 list_for_each(tmp1, &cifs_tcp_ses_list) {
334 server = list_entry(tmp1, struct TCP_Server_Info,
335 tcp_ses_list);
336 list_for_each(tmp2, &server->smb_ses_list) {
Steve French96daf2b2011-05-27 04:34:02 +0000337 ses = list_entry(tmp2, struct cifs_ses,
Jeff Laytonf1987b42008-11-15 11:12:47 -0500338 smb_ses_list);
339 list_for_each(tmp3, &ses->tcon_list) {
340 tcon = list_entry(tmp3,
Steve French96daf2b2011-05-27 04:34:02 +0000341 struct cifs_tcon,
Jeff Laytonf1987b42008-11-15 11:12:47 -0500342 tcon_list);
343 i++;
344 seq_printf(m, "\n%d) %s", i, tcon->treeName);
345 if (tcon->need_reconnect)
346 seq_puts(m, "\tDISCONNECTED ");
Pavel Shilovsky44c58182012-05-28 14:16:31 +0400347 seq_printf(m, "\nSMBs: %d",
348 atomic_read(&tcon->num_smbs_sent));
349 if (server->ops->print_stats)
350 server->ops->print_stats(m, tcon);
Jeff Laytonf1987b42008-11-15 11:12:47 -0500351 }
352 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 }
Suresh Jayaraman3f9bcca2010-10-18 23:29:37 +0530354 spin_unlock(&cifs_tcp_ses_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000356 seq_putc(m, '\n');
357 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000359
360static int cifs_stats_proc_open(struct inode *inode, struct file *file)
361{
362 return single_open(file, cifs_stats_proc_show, NULL);
363}
364
365static const struct file_operations cifs_stats_proc_fops = {
366 .owner = THIS_MODULE,
367 .open = cifs_stats_proc_open,
368 .read = seq_read,
369 .llseek = seq_lseek,
370 .release = single_release,
371 .write = cifs_stats_proc_write,
372};
Steve French90c81e02008-02-12 20:32:36 +0000373#endif /* STATS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374
375static struct proc_dir_entry *proc_fs_cifs;
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000376static const struct file_operations cifsFYI_proc_fops;
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000377static const struct file_operations cifs_lookup_cache_proc_fops;
378static const struct file_operations traceSMB_proc_fops;
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000379static const struct file_operations cifs_security_flags_proc_fops;
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000380static const struct file_operations cifs_linux_ext_proc_fops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381
382void
383cifs_proc_init(void)
384{
Alexey Dobriyan36a5aeb2008-04-29 01:01:42 -0700385 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 if (proc_fs_cifs == NULL)
387 return;
388
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000389 proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390
391#ifdef CONFIG_CIFS_STATS
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000392 proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
Steve French90c81e02008-02-12 20:32:36 +0000393#endif /* STATS */
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000394 proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
395 proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
Steve French99b1f5b2008-07-24 02:37:45 +0000396 proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
397 &cifs_linux_ext_proc_fops);
Steve French99b1f5b2008-07-24 02:37:45 +0000398 proc_create("SecurityFlags", 0, proc_fs_cifs,
399 &cifs_security_flags_proc_fops);
400 proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
401 &cifs_lookup_cache_proc_fops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402}
403
404void
405cifs_proc_clean(void)
406{
407 if (proc_fs_cifs == NULL)
408 return;
409
410 remove_proc_entry("DebugData", proc_fs_cifs);
411 remove_proc_entry("cifsFYI", proc_fs_cifs);
412 remove_proc_entry("traceSMB", proc_fs_cifs);
413#ifdef CONFIG_CIFS_STATS
414 remove_proc_entry("Stats", proc_fs_cifs);
415#endif
Steve French221601c2007-06-05 20:35:06 +0000416 remove_proc_entry("SecurityFlags", proc_fs_cifs);
Steve French221601c2007-06-05 20:35:06 +0000417 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
Steve French221601c2007-06-05 20:35:06 +0000418 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
Alexey Dobriyan36a5aeb2008-04-29 01:01:42 -0700419 remove_proc_entry("fs/cifs", NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420}
421
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000422static int cifsFYI_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423{
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000424 seq_printf(m, "%d\n", cifsFYI);
425 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000427
428static int cifsFYI_proc_open(struct inode *inode, struct file *file)
429{
430 return single_open(file, cifsFYI_proc_show, NULL);
431}
432
433static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
434 size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435{
436 char c;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300437 bool bv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 int rc;
439
440 rc = get_user(c, buffer);
441 if (rc)
442 return rc;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300443 if (strtobool(&c, &bv) == 0)
444 cifsFYI = bv;
Steve French221601c2007-06-05 20:35:06 +0000445 else if ((c > '1') && (c <= '9'))
Steve French1047abc2005-10-11 19:58:06 -0700446 cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447
448 return count;
449}
450
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000451static const struct file_operations cifsFYI_proc_fops = {
452 .owner = THIS_MODULE,
453 .open = cifsFYI_proc_open,
454 .read = seq_read,
455 .llseek = seq_lseek,
456 .release = single_release,
457 .write = cifsFYI_proc_write,
458};
459
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000460static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461{
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000462 seq_printf(m, "%d\n", linuxExtEnabled);
463 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000465
466static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
467{
468 return single_open(file, cifs_linux_ext_proc_show, NULL);
469}
470
471static ssize_t cifs_linux_ext_proc_write(struct file *file,
472 const char __user *buffer, size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473{
Steve French221601c2007-06-05 20:35:06 +0000474 char c;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300475 bool bv;
Steve French221601c2007-06-05 20:35:06 +0000476 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477
Steve French221601c2007-06-05 20:35:06 +0000478 rc = get_user(c, buffer);
479 if (rc)
480 return rc;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300481
482 rc = strtobool(&c, &bv);
483 if (rc)
484 return rc;
485
486 linuxExtEnabled = bv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487
Steve French221601c2007-06-05 20:35:06 +0000488 return count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489}
490
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000491static const struct file_operations cifs_linux_ext_proc_fops = {
492 .owner = THIS_MODULE,
493 .open = cifs_linux_ext_proc_open,
494 .read = seq_read,
495 .llseek = seq_lseek,
496 .release = single_release,
497 .write = cifs_linux_ext_proc_write,
498};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000500static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501{
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000502 seq_printf(m, "%d\n", lookupCacheEnabled);
503 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000505
506static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
507{
508 return single_open(file, cifs_lookup_cache_proc_show, NULL);
509}
510
511static ssize_t cifs_lookup_cache_proc_write(struct file *file,
512 const char __user *buffer, size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513{
514 char c;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300515 bool bv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 int rc;
517
518 rc = get_user(c, buffer);
519 if (rc)
520 return rc;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300521
522 rc = strtobool(&c, &bv);
523 if (rc)
524 return rc;
525
526 lookupCacheEnabled = bv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527
528 return count;
529}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000530
531static const struct file_operations cifs_lookup_cache_proc_fops = {
532 .owner = THIS_MODULE,
533 .open = cifs_lookup_cache_proc_open,
534 .read = seq_read,
535 .llseek = seq_lseek,
536 .release = single_release,
537 .write = cifs_lookup_cache_proc_write,
538};
539
540static int traceSMB_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541{
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000542 seq_printf(m, "%d\n", traceSMB);
543 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000545
546static int traceSMB_proc_open(struct inode *inode, struct file *file)
547{
548 return single_open(file, traceSMB_proc_show, NULL);
549}
550
551static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
552 size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553{
554 char c;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300555 bool bv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 int rc;
557
558 rc = get_user(c, buffer);
559 if (rc)
560 return rc;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300561
562 rc = strtobool(&c, &bv);
563 if (rc)
564 return rc;
565
566 traceSMB = bv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567
568 return count;
569}
570
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000571static const struct file_operations traceSMB_proc_fops = {
572 .owner = THIS_MODULE,
573 .open = traceSMB_proc_open,
574 .read = seq_read,
575 .llseek = seq_lseek,
576 .release = single_release,
577 .write = traceSMB_proc_write,
578};
579
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000580static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581{
Jeff Layton04912d62010-04-24 07:57:45 -0400582 seq_printf(m, "0x%x\n", global_secflags);
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000583 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000585
586static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
587{
588 return single_open(file, cifs_security_flags_proc_show, NULL);
589}
590
Jeff Layton52dfb442013-05-26 07:01:02 -0400591/*
592 * Ensure that if someone sets a MUST flag, that we disable all other MAY
593 * flags except for the ones corresponding to the given MUST flag. If there are
594 * multiple MUST flags, then try to prefer more secure ones.
595 */
596static void
597cifs_security_flags_handle_must_flags(unsigned int *flags)
598{
599 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
600
601 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
602 *flags = CIFSSEC_MUST_KRB5;
603 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
604 *flags = CIFSSEC_MUST_NTLMSSP;
605 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
606 *flags = CIFSSEC_MUST_NTLMV2;
607 else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM)
608 *flags = CIFSSEC_MUST_NTLM;
Niklas Cassel7a1ceba2015-01-22 14:16:34 +0100609 else if (CIFSSEC_MUST_LANMAN &&
610 (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN)
Jeff Layton52dfb442013-05-26 07:01:02 -0400611 *flags = CIFSSEC_MUST_LANMAN;
Niklas Cassel7a1ceba2015-01-22 14:16:34 +0100612 else if (CIFSSEC_MUST_PLNTXT &&
613 (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT)
Jeff Layton52dfb442013-05-26 07:01:02 -0400614 *flags = CIFSSEC_MUST_PLNTXT;
615
616 *flags |= signflags;
617}
618
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000619static ssize_t cifs_security_flags_proc_write(struct file *file,
620 const char __user *buffer, size_t count, loff_t *ppos)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621{
Jeff Layton7715dad2013-05-26 07:01:01 -0400622 int rc;
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000623 unsigned int flags;
624 char flags_string[12];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625 char c;
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300626 bool bv;
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000627
Steve French221601c2007-06-05 20:35:06 +0000628 if ((count < 1) || (count > 11))
Steve French39798772006-05-31 22:40:51 +0000629 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000631 memset(flags_string, 0, 12);
Steve French39798772006-05-31 22:40:51 +0000632
Steve French221601c2007-06-05 20:35:06 +0000633 if (copy_from_user(flags_string, buffer, count))
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000634 return -EFAULT;
Steve French39798772006-05-31 22:40:51 +0000635
Steve French221601c2007-06-05 20:35:06 +0000636 if (count < 3) {
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000637 /* single char or single char followed by null */
638 c = flags_string[0];
Andy Shevchenko28e2aed2014-08-27 16:49:42 +0300639 if (strtobool(&c, &bv) == 0) {
640 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
Steve Frencha0136892007-10-04 20:05:09 +0000641 return count;
642 } else if (!isdigit(c)) {
Jeff Layton7715dad2013-05-26 07:01:01 -0400643 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
644 flags_string);
Steve Frencha0136892007-10-04 20:05:09 +0000645 return -EINVAL;
646 }
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000647 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648
Jeff Layton7715dad2013-05-26 07:01:01 -0400649 /* else we have a number */
650 rc = kstrtouint(flags_string, 0, &flags);
651 if (rc) {
652 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
653 flags_string);
654 return rc;
655 }
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000656
Joe Perchesf96637b2013-05-04 22:12:25 -0500657 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000658
Jeff Layton7715dad2013-05-26 07:01:01 -0400659 if (flags == 0) {
660 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000661 return -EINVAL;
662 }
663
Steve French221601c2007-06-05 20:35:06 +0000664 if (flags & ~CIFSSEC_MASK) {
Jeff Layton7715dad2013-05-26 07:01:01 -0400665 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
Joe Perchesf96637b2013-05-04 22:12:25 -0500666 flags & ~CIFSSEC_MASK);
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000667 return -EINVAL;
668 }
Jeff Layton7715dad2013-05-26 07:01:01 -0400669
Jeff Layton52dfb442013-05-26 07:01:02 -0400670 cifs_security_flags_handle_must_flags(&flags);
671
Steve Frenchbdc4bf6e2006-06-02 22:57:13 +0000672 /* flags look ok - update the global security flags for cifs module */
Jeff Layton04912d62010-04-24 07:57:45 -0400673 global_secflags = flags;
674 if (global_secflags & CIFSSEC_MUST_SIGN) {
Steve French762e5ab2007-06-28 18:41:42 +0000675 /* requiring signing implies signing is allowed */
Jeff Layton04912d62010-04-24 07:57:45 -0400676 global_secflags |= CIFSSEC_MAY_SIGN;
Joe Perchesf96637b2013-05-04 22:12:25 -0500677 cifs_dbg(FYI, "packet signing now required\n");
Jeff Layton04912d62010-04-24 07:57:45 -0400678 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
Joe Perchesf96637b2013-05-04 22:12:25 -0500679 cifs_dbg(FYI, "packet signing disabled\n");
Steve French762e5ab2007-06-28 18:41:42 +0000680 }
681 /* BB should we turn on MAY flags for other MUST options? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682 return count;
683}
Alexey Dobriyanf984c7b2008-07-24 02:34:24 +0000684
685static const struct file_operations cifs_security_flags_proc_fops = {
686 .owner = THIS_MODULE,
687 .open = cifs_security_flags_proc_open,
688 .read = seq_read,
689 .llseek = seq_lseek,
690 .release = single_release,
691 .write = cifs_security_flags_proc_write,
692};
Steve French90c81e02008-02-12 20:32:36 +0000693#else
Steve Frenche086fce2008-02-18 04:03:58 +0000694inline void cifs_proc_init(void)
Steve French90c81e02008-02-12 20:32:36 +0000695{
696}
697
Steve Frenche086fce2008-02-18 04:03:58 +0000698inline void cifs_proc_clean(void)
Steve French90c81e02008-02-12 20:32:36 +0000699{
700}
701#endif /* PROC_FS */