Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/cifs_debug.c | |
3 | * | |
b8643e1b | 4 | * Copyright (C) International Business Machines Corp., 2000,2005 |
1da177e4 LT |
5 | * |
6 | * Modified by Steve French (sfrench@us.ibm.com) | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
221601c3 | 10 | * the Free Software Foundation; either version 2 of the License, or |
1da177e4 | 11 | * (at your option) any later version. |
221601c3 | 12 | * |
1da177e4 LT |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
16 | * the GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
221601c3 | 19 | * along with this program; if not, write to the Free Software |
1da177e4 LT |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
21 | */ | |
22 | #include <linux/fs.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/ctype.h> | |
25 | #include <linux/module.h> | |
26 | #include <linux/proc_fs.h> | |
7c0f6ba6 | 27 | #include <linux/uaccess.h> |
1da177e4 LT |
28 | #include "cifspdu.h" |
29 | #include "cifsglob.h" | |
30 | #include "cifsproto.h" | |
31 | #include "cifs_debug.h" | |
6c91d362 | 32 | #include "cifsfs.h" |
1da177e4 LT |
33 | |
34 | void | |
35 | cifs_dump_mem(char *label, void *data, int length) | |
36 | { | |
0b456f04 | 37 | pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data); |
55d83e0d AS |
38 | print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4, |
39 | data, length, true); | |
1da177e4 LT |
40 | } |
41 | ||
f96637be JP |
42 | #ifdef CONFIG_CIFS_DEBUG |
43 | void 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 | ||
ec7147a9 | 53 | pr_err_ratelimited("CIFS VFS: %pV", &vaf); |
f96637be JP |
54 | |
55 | va_end(args); | |
56 | } | |
57 | #endif | |
58 | ||
d4e4854f | 59 | void cifs_dump_detail(void *buf) |
3979877e | 60 | { |
8aa26f3e | 61 | #ifdef CONFIG_CIFS_DEBUG2 |
d4e4854f PS |
62 | struct smb_hdr *smb = (struct smb_hdr *)buf; |
63 | ||
f96637be JP |
64 | 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)); | |
8aa26f3e | 68 | #endif /* CONFIG_CIFS_DEBUG2 */ |
3979877e SF |
69 | } |
70 | ||
ffdd6e4d | 71 | void cifs_dump_mids(struct TCP_Server_Info *server) |
3979877e | 72 | { |
8aa26f3e | 73 | #ifdef CONFIG_CIFS_DEBUG2 |
3979877e | 74 | struct list_head *tmp; |
ffdd6e4d | 75 | struct mid_q_entry *mid_entry; |
3979877e | 76 | |
221601c3 | 77 | if (server == NULL) |
3979877e SF |
78 | return; |
79 | ||
f96637be | 80 | cifs_dbg(VFS, "Dump pending requests:\n"); |
3979877e SF |
81 | spin_lock(&GlobalMid_Lock); |
82 | list_for_each(tmp, &server->pending_mid_q) { | |
83 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
f96637be JP |
84 | 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); | |
3979877e | 90 | #ifdef CONFIG_CIFS_STATS2 |
f96637be JP |
91 | 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); | |
3979877e | 96 | #endif /* STATS2 */ |
f96637be JP |
97 | cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n", |
98 | mid_entry->multiRsp, mid_entry->multiEnd); | |
ad8b15f0 SF |
99 | 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); | |
3979877e SF |
103 | } |
104 | } | |
105 | spin_unlock(&GlobalMid_Lock); | |
3979877e | 106 | #endif /* CONFIG_CIFS_DEBUG2 */ |
8aa26f3e | 107 | } |
3979877e | 108 | |
1da177e4 | 109 | #ifdef CONFIG_PROC_FS |
f984c7b9 | 110 | static int cifs_debug_data_proc_show(struct seq_file *m, void *v) |
1da177e4 | 111 | { |
f1987b44 | 112 | struct list_head *tmp1, *tmp2, *tmp3; |
ffdd6e4d | 113 | struct mid_q_entry *mid_entry; |
14fbf50d | 114 | struct TCP_Server_Info *server; |
96daf2b0 SF |
115 | struct cifs_ses *ses; |
116 | struct cifs_tcon *tcon; | |
f1987b44 JL |
117 | int i, j; |
118 | __u32 dev_type; | |
1da177e4 | 119 | |
f984c7b9 | 120 | seq_puts(m, |
1da177e4 LT |
121 | "Display Internal CIFS Data Structures for Debugging\n" |
122 | "---------------------------------------------------\n"); | |
f984c7b9 | 123 | seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); |
ca40b714 | 124 | seq_printf(m, "Features:"); |
f579903e | 125 | #ifdef CONFIG_CIFS_DFS_UPCALL |
ca40b714 | 126 | seq_printf(m, " dfs"); |
f579903e SJ |
127 | #endif |
128 | #ifdef CONFIG_CIFS_FSCACHE | |
ca40b714 | 129 | seq_printf(m, " fscache"); |
f579903e SJ |
130 | #endif |
131 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
ca40b714 | 132 | seq_printf(m, " lanman"); |
f579903e SJ |
133 | #endif |
134 | #ifdef CONFIG_CIFS_POSIX | |
ca40b714 | 135 | seq_printf(m, " posix"); |
f579903e SJ |
136 | #endif |
137 | #ifdef CONFIG_CIFS_UPCALL | |
ca40b714 | 138 | seq_printf(m, " spnego"); |
f579903e SJ |
139 | #endif |
140 | #ifdef CONFIG_CIFS_XATTR | |
ca40b714 JL |
141 | seq_printf(m, " xattr"); |
142 | #endif | |
143 | #ifdef CONFIG_CIFS_ACL | |
144 | seq_printf(m, " acl"); | |
f579903e SJ |
145 | #endif |
146 | seq_putc(m, '\n'); | |
f984c7b9 AD |
147 | seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); |
148 | seq_printf(m, "Servers:"); | |
1da177e4 LT |
149 | |
150 | i = 0; | |
3f9bcca7 | 151 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
152 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
153 | server = list_entry(tmp1, struct TCP_Server_Info, | |
14fbf50d | 154 | tcp_ses_list); |
9742805d | 155 | seq_printf(m, "\nNumber of credits: %d", server->credits); |
1da177e4 | 156 | i++; |
14fbf50d | 157 | list_for_each(tmp2, &server->smb_ses_list) { |
96daf2b0 | 158 | ses = list_entry(tmp2, struct cifs_ses, |
14fbf50d JL |
159 | smb_ses_list); |
160 | if ((ses->serverDomain == NULL) || | |
161 | (ses->serverOS == NULL) || | |
162 | (ses->serverNOS == NULL)) { | |
f1987b44 JL |
163 | seq_printf(m, "\n%d) entry for %s not fully " |
164 | "displayed\n\t", i, ses->serverName); | |
14fbf50d JL |
165 | } else { |
166 | seq_printf(m, | |
f1987b44 JL |
167 | "\n%d) Name: %s Domain: %s Uses: %d OS:" |
168 | " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB" | |
221601c3 | 169 | " session status: %d\t", |
b8643e1b | 170 | i, ses->serverName, ses->serverDomain, |
14fbf50d | 171 | ses->ses_count, ses->serverOS, ses->serverNOS, |
221601c3 | 172 | ses->capabilities, ses->status); |
14fbf50d | 173 | } |
f984c7b9 | 174 | seq_printf(m, "TCP status: %d\n\tLocal Users To " |
14fbf50d JL |
175 | "Server: %d SecMode: 0x%x Req On Wire: %d", |
176 | server->tcpStatus, server->srv_count, | |
fc40f9cf | 177 | server->sec_mode, in_flight(server)); |
131afd0b SF |
178 | |
179 | #ifdef CONFIG_CIFS_STATS2 | |
f984c7b9 | 180 | seq_printf(m, " In Send: %d In MaxReq Wait: %d", |
789e6661 | 181 | atomic_read(&server->in_send), |
14fbf50d | 182 | atomic_read(&server->num_waiters)); |
131afd0b SF |
183 | #endif |
184 | ||
f1987b44 JL |
185 | seq_puts(m, "\n\tShares:"); |
186 | j = 0; | |
187 | list_for_each(tmp3, &ses->tcon_list) { | |
96daf2b0 | 188 | tcon = list_entry(tmp3, struct cifs_tcon, |
f1987b44 JL |
189 | tcon_list); |
190 | ++j; | |
191 | dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType); | |
192 | seq_printf(m, "\n\t%d) %s Mounts: %d ", j, | |
193 | tcon->treeName, tcon->tc_count); | |
194 | if (tcon->nativeFileSystem) { | |
195 | seq_printf(m, "Type: %s ", | |
196 | tcon->nativeFileSystem); | |
197 | } | |
198 | seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x" | |
59b04c5d | 199 | "\n\tPathComponentMax: %d Status: %d", |
f1987b44 JL |
200 | le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics), |
201 | le32_to_cpu(tcon->fsAttrInfo.Attributes), | |
202 | le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength), | |
203 | tcon->tidStatus); | |
204 | if (dev_type == FILE_DEVICE_DISK) | |
205 | seq_puts(m, " type: DISK "); | |
206 | else if (dev_type == FILE_DEVICE_CD_ROM) | |
207 | seq_puts(m, " type: CDROM "); | |
208 | else | |
209 | seq_printf(m, " type: %d ", dev_type); | |
769ee6a4 SF |
210 | if (server->ops->dump_share_caps) |
211 | server->ops->dump_share_caps(m, tcon); | |
f1987b44 JL |
212 | |
213 | if (tcon->need_reconnect) | |
214 | seq_puts(m, "\tDISCONNECTED "); | |
215 | seq_putc(m, '\n'); | |
216 | } | |
217 | ||
218 | seq_puts(m, "\n\tMIDs:\n"); | |
1da177e4 LT |
219 | |
220 | spin_lock(&GlobalMid_Lock); | |
14fbf50d | 221 | list_for_each(tmp3, &server->pending_mid_q) { |
f1987b44 | 222 | mid_entry = list_entry(tmp3, struct mid_q_entry, |
1da177e4 | 223 | qhead); |
f1987b44 | 224 | seq_printf(m, "\tState: %d com: %d pid:" |
7c9421e1 PS |
225 | " %d cbdata: %p mid %llu\n", |
226 | mid_entry->mid_state, | |
227 | le16_to_cpu(mid_entry->command), | |
228 | mid_entry->pid, | |
229 | mid_entry->callback_data, | |
230 | mid_entry->mid); | |
1da177e4 | 231 | } |
221601c3 | 232 | spin_unlock(&GlobalMid_Lock); |
1da177e4 | 233 | } |
1da177e4 | 234 | } |
3f9bcca7 | 235 | spin_unlock(&cifs_tcp_ses_lock); |
f984c7b9 | 236 | seq_putc(m, '\n'); |
1da177e4 | 237 | |
1da177e4 | 238 | /* BB add code to dump additional info such as TCP session info now */ |
f984c7b9 AD |
239 | return 0; |
240 | } | |
1da177e4 | 241 | |
f984c7b9 AD |
242 | static int cifs_debug_data_proc_open(struct inode *inode, struct file *file) |
243 | { | |
244 | return single_open(file, cifs_debug_data_proc_show, NULL); | |
1da177e4 LT |
245 | } |
246 | ||
f984c7b9 | 247 | static const struct file_operations cifs_debug_data_proc_fops = { |
f984c7b9 AD |
248 | .open = cifs_debug_data_proc_open, |
249 | .read = seq_read, | |
250 | .llseek = seq_lseek, | |
251 | .release = single_release, | |
252 | }; | |
1047abc1 | 253 | |
f984c7b9 AD |
254 | #ifdef CONFIG_CIFS_STATS |
255 | static ssize_t cifs_stats_proc_write(struct file *file, | |
256 | const char __user *buffer, size_t count, loff_t *ppos) | |
1047abc1 | 257 | { |
28e2aed2 | 258 | bool bv; |
221601c3 | 259 | int rc; |
f1987b44 JL |
260 | struct list_head *tmp1, *tmp2, *tmp3; |
261 | struct TCP_Server_Info *server; | |
96daf2b0 SF |
262 | struct cifs_ses *ses; |
263 | struct cifs_tcon *tcon; | |
1047abc1 | 264 | |
1404297e KC |
265 | rc = kstrtobool_from_user(buffer, count, &bv); |
266 | if (rc == 0) { | |
4498eed5 SF |
267 | #ifdef CONFIG_CIFS_STATS2 |
268 | atomic_set(&totBufAllocCount, 0); | |
269 | atomic_set(&totSmBufAllocCount, 0); | |
270 | #endif /* CONFIG_CIFS_STATS2 */ | |
3f9bcca7 | 271 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
272 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
273 | server = list_entry(tmp1, struct TCP_Server_Info, | |
274 | tcp_ses_list); | |
c2b3382c | 275 | list_for_each(tmp2, &server->smb_ses_list) { |
96daf2b0 | 276 | ses = list_entry(tmp2, struct cifs_ses, |
c2b3382c | 277 | smb_ses_list); |
f1987b44 JL |
278 | list_for_each(tmp3, &ses->tcon_list) { |
279 | tcon = list_entry(tmp3, | |
96daf2b0 | 280 | struct cifs_tcon, |
f1987b44 JL |
281 | tcon_list); |
282 | atomic_set(&tcon->num_smbs_sent, 0); | |
44c58186 PS |
283 | if (server->ops->clear_stats) |
284 | server->ops->clear_stats(tcon); | |
f1987b44 JL |
285 | } |
286 | } | |
1047abc1 | 287 | } |
3f9bcca7 | 288 | spin_unlock(&cifs_tcp_ses_lock); |
1404297e KC |
289 | } else { |
290 | return rc; | |
1047abc1 SF |
291 | } |
292 | ||
221601c3 | 293 | return count; |
1047abc1 SF |
294 | } |
295 | ||
f984c7b9 | 296 | static int cifs_stats_proc_show(struct seq_file *m, void *v) |
1da177e4 | 297 | { |
f984c7b9 | 298 | int i; |
f1987b44 JL |
299 | struct list_head *tmp1, *tmp2, *tmp3; |
300 | struct TCP_Server_Info *server; | |
96daf2b0 SF |
301 | struct cifs_ses *ses; |
302 | struct cifs_tcon *tcon; | |
1da177e4 | 303 | |
f984c7b9 | 304 | seq_printf(m, |
1da177e4 LT |
305 | "Resources in use\nCIFS Session: %d\n", |
306 | sesInfoAllocCount.counter); | |
f984c7b9 | 307 | seq_printf(m, "Share (unique mount targets): %d\n", |
1da177e4 | 308 | tconInfoAllocCount.counter); |
f984c7b9 | 309 | seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", |
b8643e1b SF |
310 | bufAllocCount.counter, |
311 | cifs_min_rcv + tcpSesAllocCount.counter); | |
f984c7b9 | 312 | seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", |
221601c3 | 313 | smBufAllocCount.counter, cifs_min_small); |
07475ffb | 314 | #ifdef CONFIG_CIFS_STATS2 |
f984c7b9 | 315 | seq_printf(m, "Total Large %d Small %d Allocations\n", |
07475ffb | 316 | atomic_read(&totBufAllocCount), |
221601c3 | 317 | atomic_read(&totSmBufAllocCount)); |
07475ffb SF |
318 | #endif /* CONFIG_CIFS_STATS2 */ |
319 | ||
8097531a | 320 | seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount)); |
f984c7b9 | 321 | seq_printf(m, |
1da177e4 | 322 | "\n%d session %d share reconnects\n", |
221601c3 | 323 | tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); |
1da177e4 | 324 | |
f984c7b9 | 325 | seq_printf(m, |
1da177e4 | 326 | "Total vfs operations: %d maximum at one time: %d\n", |
221601c3 | 327 | GlobalCurrentXid, GlobalMaxActiveXid); |
1da177e4 LT |
328 | |
329 | i = 0; | |
3f9bcca7 | 330 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
331 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
332 | server = list_entry(tmp1, struct TCP_Server_Info, | |
333 | tcp_ses_list); | |
334 | list_for_each(tmp2, &server->smb_ses_list) { | |
96daf2b0 | 335 | ses = list_entry(tmp2, struct cifs_ses, |
f1987b44 JL |
336 | smb_ses_list); |
337 | list_for_each(tmp3, &ses->tcon_list) { | |
338 | tcon = list_entry(tmp3, | |
96daf2b0 | 339 | struct cifs_tcon, |
f1987b44 JL |
340 | tcon_list); |
341 | i++; | |
342 | seq_printf(m, "\n%d) %s", i, tcon->treeName); | |
343 | if (tcon->need_reconnect) | |
344 | seq_puts(m, "\tDISCONNECTED "); | |
44c58186 PS |
345 | seq_printf(m, "\nSMBs: %d", |
346 | atomic_read(&tcon->num_smbs_sent)); | |
347 | if (server->ops->print_stats) | |
348 | server->ops->print_stats(m, tcon); | |
f1987b44 JL |
349 | } |
350 | } | |
1da177e4 | 351 | } |
3f9bcca7 | 352 | spin_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 353 | |
f984c7b9 AD |
354 | seq_putc(m, '\n'); |
355 | return 0; | |
356 | } | |
221601c3 | 357 | |
f984c7b9 AD |
358 | static int cifs_stats_proc_open(struct inode *inode, struct file *file) |
359 | { | |
360 | return single_open(file, cifs_stats_proc_show, NULL); | |
1da177e4 | 361 | } |
f984c7b9 AD |
362 | |
363 | static const struct file_operations cifs_stats_proc_fops = { | |
f984c7b9 AD |
364 | .open = cifs_stats_proc_open, |
365 | .read = seq_read, | |
366 | .llseek = seq_lseek, | |
367 | .release = single_release, | |
368 | .write = cifs_stats_proc_write, | |
369 | }; | |
90c81e0b | 370 | #endif /* STATS */ |
1da177e4 LT |
371 | |
372 | static struct proc_dir_entry *proc_fs_cifs; | |
f984c7b9 | 373 | static const struct file_operations cifsFYI_proc_fops; |
f984c7b9 AD |
374 | static const struct file_operations cifs_lookup_cache_proc_fops; |
375 | static const struct file_operations traceSMB_proc_fops; | |
f984c7b9 | 376 | static const struct file_operations cifs_security_flags_proc_fops; |
f984c7b9 | 377 | static const struct file_operations cifs_linux_ext_proc_fops; |
1da177e4 LT |
378 | |
379 | void | |
380 | cifs_proc_init(void) | |
381 | { | |
36a5aeb8 | 382 | proc_fs_cifs = proc_mkdir("fs/cifs", NULL); |
1da177e4 LT |
383 | if (proc_fs_cifs == NULL) |
384 | return; | |
385 | ||
f984c7b9 | 386 | proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops); |
1da177e4 LT |
387 | |
388 | #ifdef CONFIG_CIFS_STATS | |
f984c7b9 | 389 | proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops); |
90c81e0b | 390 | #endif /* STATS */ |
f984c7b9 AD |
391 | proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops); |
392 | proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops); | |
99b1f5b2 SF |
393 | proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs, |
394 | &cifs_linux_ext_proc_fops); | |
99b1f5b2 SF |
395 | proc_create("SecurityFlags", 0, proc_fs_cifs, |
396 | &cifs_security_flags_proc_fops); | |
397 | proc_create("LookupCacheEnabled", 0, proc_fs_cifs, | |
398 | &cifs_lookup_cache_proc_fops); | |
1da177e4 LT |
399 | } |
400 | ||
401 | void | |
402 | cifs_proc_clean(void) | |
403 | { | |
404 | if (proc_fs_cifs == NULL) | |
405 | return; | |
406 | ||
407 | remove_proc_entry("DebugData", proc_fs_cifs); | |
408 | remove_proc_entry("cifsFYI", proc_fs_cifs); | |
409 | remove_proc_entry("traceSMB", proc_fs_cifs); | |
410 | #ifdef CONFIG_CIFS_STATS | |
411 | remove_proc_entry("Stats", proc_fs_cifs); | |
412 | #endif | |
221601c3 | 413 | remove_proc_entry("SecurityFlags", proc_fs_cifs); |
221601c3 | 414 | remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); |
221601c3 | 415 | remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); |
36a5aeb8 | 416 | remove_proc_entry("fs/cifs", NULL); |
1da177e4 LT |
417 | } |
418 | ||
f984c7b9 | 419 | static int cifsFYI_proc_show(struct seq_file *m, void *v) |
1da177e4 | 420 | { |
f984c7b9 AD |
421 | seq_printf(m, "%d\n", cifsFYI); |
422 | return 0; | |
423 | } | |
1da177e4 | 424 | |
f984c7b9 AD |
425 | static int cifsFYI_proc_open(struct inode *inode, struct file *file) |
426 | { | |
427 | return single_open(file, cifsFYI_proc_show, NULL); | |
1da177e4 | 428 | } |
f984c7b9 AD |
429 | |
430 | static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, | |
431 | size_t count, loff_t *ppos) | |
1da177e4 | 432 | { |
1404297e | 433 | char c[2] = { '\0' }; |
28e2aed2 | 434 | bool bv; |
1da177e4 LT |
435 | int rc; |
436 | ||
1404297e | 437 | rc = get_user(c[0], buffer); |
1da177e4 LT |
438 | if (rc) |
439 | return rc; | |
1404297e | 440 | if (strtobool(c, &bv) == 0) |
28e2aed2 | 441 | cifsFYI = bv; |
1404297e KC |
442 | else if ((c[0] > '1') && (c[0] <= '9')) |
443 | cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ | |
1da177e4 LT |
444 | |
445 | return count; | |
446 | } | |
447 | ||
f984c7b9 | 448 | static const struct file_operations cifsFYI_proc_fops = { |
f984c7b9 AD |
449 | .open = cifsFYI_proc_open, |
450 | .read = seq_read, | |
451 | .llseek = seq_lseek, | |
452 | .release = single_release, | |
453 | .write = cifsFYI_proc_write, | |
454 | }; | |
1da177e4 | 455 | |
f984c7b9 AD |
456 | static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) |
457 | { | |
458 | seq_printf(m, "%d\n", linuxExtEnabled); | |
459 | return 0; | |
460 | } | |
1da177e4 | 461 | |
f984c7b9 AD |
462 | static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) |
463 | { | |
464 | return single_open(file, cifs_linux_ext_proc_show, NULL); | |
1da177e4 | 465 | } |
f984c7b9 AD |
466 | |
467 | static ssize_t cifs_linux_ext_proc_write(struct file *file, | |
468 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 469 | { |
221601c3 SF |
470 | int rc; |
471 | ||
1404297e | 472 | rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); |
221601c3 SF |
473 | if (rc) |
474 | return rc; | |
28e2aed2 | 475 | |
221601c3 | 476 | return count; |
1da177e4 LT |
477 | } |
478 | ||
f984c7b9 | 479 | static const struct file_operations cifs_linux_ext_proc_fops = { |
f984c7b9 AD |
480 | .open = cifs_linux_ext_proc_open, |
481 | .read = seq_read, | |
482 | .llseek = seq_lseek, | |
483 | .release = single_release, | |
484 | .write = cifs_linux_ext_proc_write, | |
485 | }; | |
1da177e4 | 486 | |
f984c7b9 | 487 | static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) |
1da177e4 | 488 | { |
f984c7b9 AD |
489 | seq_printf(m, "%d\n", lookupCacheEnabled); |
490 | return 0; | |
491 | } | |
1da177e4 | 492 | |
f984c7b9 AD |
493 | static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) |
494 | { | |
495 | return single_open(file, cifs_lookup_cache_proc_show, NULL); | |
1da177e4 | 496 | } |
f984c7b9 AD |
497 | |
498 | static ssize_t cifs_lookup_cache_proc_write(struct file *file, | |
499 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 500 | { |
1da177e4 LT |
501 | int rc; |
502 | ||
1404297e | 503 | rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled); |
1da177e4 LT |
504 | if (rc) |
505 | return rc; | |
28e2aed2 | 506 | |
1da177e4 LT |
507 | return count; |
508 | } | |
1da177e4 | 509 | |
f984c7b9 | 510 | static const struct file_operations cifs_lookup_cache_proc_fops = { |
f984c7b9 AD |
511 | .open = cifs_lookup_cache_proc_open, |
512 | .read = seq_read, | |
513 | .llseek = seq_lseek, | |
514 | .release = single_release, | |
515 | .write = cifs_lookup_cache_proc_write, | |
516 | }; | |
1da177e4 | 517 | |
f984c7b9 AD |
518 | static int traceSMB_proc_show(struct seq_file *m, void *v) |
519 | { | |
520 | seq_printf(m, "%d\n", traceSMB); | |
521 | return 0; | |
522 | } | |
1da177e4 | 523 | |
f984c7b9 AD |
524 | static int traceSMB_proc_open(struct inode *inode, struct file *file) |
525 | { | |
526 | return single_open(file, traceSMB_proc_show, NULL); | |
1da177e4 | 527 | } |
f984c7b9 AD |
528 | |
529 | static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, | |
530 | size_t count, loff_t *ppos) | |
1da177e4 | 531 | { |
1da177e4 LT |
532 | int rc; |
533 | ||
1404297e | 534 | rc = kstrtobool_from_user(buffer, count, &traceSMB); |
1da177e4 LT |
535 | if (rc) |
536 | return rc; | |
28e2aed2 | 537 | |
1da177e4 LT |
538 | return count; |
539 | } | |
540 | ||
f984c7b9 | 541 | static const struct file_operations traceSMB_proc_fops = { |
f984c7b9 AD |
542 | .open = traceSMB_proc_open, |
543 | .read = seq_read, | |
544 | .llseek = seq_lseek, | |
545 | .release = single_release, | |
546 | .write = traceSMB_proc_write, | |
547 | }; | |
1da177e4 | 548 | |
f984c7b9 AD |
549 | static int cifs_security_flags_proc_show(struct seq_file *m, void *v) |
550 | { | |
04912d6a | 551 | seq_printf(m, "0x%x\n", global_secflags); |
f984c7b9 AD |
552 | return 0; |
553 | } | |
1da177e4 | 554 | |
f984c7b9 AD |
555 | static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) |
556 | { | |
557 | return single_open(file, cifs_security_flags_proc_show, NULL); | |
1da177e4 | 558 | } |
f984c7b9 | 559 | |
52dfb446 JL |
560 | /* |
561 | * Ensure that if someone sets a MUST flag, that we disable all other MAY | |
562 | * flags except for the ones corresponding to the given MUST flag. If there are | |
563 | * multiple MUST flags, then try to prefer more secure ones. | |
564 | */ | |
565 | static void | |
566 | cifs_security_flags_handle_must_flags(unsigned int *flags) | |
567 | { | |
568 | unsigned int signflags = *flags & CIFSSEC_MUST_SIGN; | |
569 | ||
570 | if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) | |
571 | *flags = CIFSSEC_MUST_KRB5; | |
572 | else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) | |
573 | *flags = CIFSSEC_MUST_NTLMSSP; | |
574 | else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) | |
575 | *flags = CIFSSEC_MUST_NTLMV2; | |
576 | else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM) | |
577 | *flags = CIFSSEC_MUST_NTLM; | |
7a1ceba0 NC |
578 | else if (CIFSSEC_MUST_LANMAN && |
579 | (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN) | |
52dfb446 | 580 | *flags = CIFSSEC_MUST_LANMAN; |
7a1ceba0 NC |
581 | else if (CIFSSEC_MUST_PLNTXT && |
582 | (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT) | |
52dfb446 JL |
583 | *flags = CIFSSEC_MUST_PLNTXT; |
584 | ||
585 | *flags |= signflags; | |
586 | } | |
587 | ||
f984c7b9 AD |
588 | static ssize_t cifs_security_flags_proc_write(struct file *file, |
589 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 590 | { |
7715dad8 | 591 | int rc; |
bdc4bf6e SF |
592 | unsigned int flags; |
593 | char flags_string[12]; | |
28e2aed2 | 594 | bool bv; |
bdc4bf6e | 595 | |
221601c3 | 596 | if ((count < 1) || (count > 11)) |
3979877e | 597 | return -EINVAL; |
1da177e4 | 598 | |
bdc4bf6e | 599 | memset(flags_string, 0, 12); |
3979877e | 600 | |
221601c3 | 601 | if (copy_from_user(flags_string, buffer, count)) |
bdc4bf6e | 602 | return -EFAULT; |
3979877e | 603 | |
221601c3 | 604 | if (count < 3) { |
bdc4bf6e | 605 | /* single char or single char followed by null */ |
1404297e | 606 | if (strtobool(flags_string, &bv) == 0) { |
28e2aed2 | 607 | global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; |
a013689d | 608 | return count; |
1404297e | 609 | } else if (!isdigit(flags_string[0])) { |
7715dad8 JL |
610 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", |
611 | flags_string); | |
a013689d SF |
612 | return -EINVAL; |
613 | } | |
bdc4bf6e | 614 | } |
bdc4bf6e | 615 | |
7715dad8 JL |
616 | /* else we have a number */ |
617 | rc = kstrtouint(flags_string, 0, &flags); | |
618 | if (rc) { | |
619 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", | |
620 | flags_string); | |
621 | return rc; | |
622 | } | |
bdc4bf6e | 623 | |
f96637be | 624 | cifs_dbg(FYI, "sec flags 0x%x\n", flags); |
bdc4bf6e | 625 | |
7715dad8 JL |
626 | if (flags == 0) { |
627 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); | |
bdc4bf6e SF |
628 | return -EINVAL; |
629 | } | |
1da177e4 | 630 | |
221601c3 | 631 | if (flags & ~CIFSSEC_MASK) { |
7715dad8 | 632 | cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", |
f96637be | 633 | flags & ~CIFSSEC_MASK); |
bdc4bf6e SF |
634 | return -EINVAL; |
635 | } | |
7715dad8 | 636 | |
52dfb446 JL |
637 | cifs_security_flags_handle_must_flags(&flags); |
638 | ||
bdc4bf6e | 639 | /* flags look ok - update the global security flags for cifs module */ |
04912d6a JL |
640 | global_secflags = flags; |
641 | if (global_secflags & CIFSSEC_MUST_SIGN) { | |
762e5ab7 | 642 | /* requiring signing implies signing is allowed */ |
04912d6a | 643 | global_secflags |= CIFSSEC_MAY_SIGN; |
f96637be | 644 | cifs_dbg(FYI, "packet signing now required\n"); |
04912d6a | 645 | } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { |
f96637be | 646 | cifs_dbg(FYI, "packet signing disabled\n"); |
762e5ab7 SF |
647 | } |
648 | /* BB should we turn on MAY flags for other MUST options? */ | |
1da177e4 LT |
649 | return count; |
650 | } | |
f984c7b9 AD |
651 | |
652 | static const struct file_operations cifs_security_flags_proc_fops = { | |
f984c7b9 AD |
653 | .open = cifs_security_flags_proc_open, |
654 | .read = seq_read, | |
655 | .llseek = seq_lseek, | |
656 | .release = single_release, | |
657 | .write = cifs_security_flags_proc_write, | |
658 | }; | |
90c81e0b | 659 | #else |
e086fcea | 660 | inline void cifs_proc_init(void) |
90c81e0b SF |
661 | { |
662 | } | |
663 | ||
e086fcea | 664 | inline void cifs_proc_clean(void) |
90c81e0b SF |
665 | { |
666 | } | |
667 | #endif /* PROC_FS */ |