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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * fs/cifs_debug.c | |
4 | * | |
b8643e1b | 5 | * Copyright (C) International Business Machines Corp., 2000,2005 |
1da177e4 LT |
6 | * |
7 | * Modified by Steve French (sfrench@us.ibm.com) | |
1da177e4 LT |
8 | */ |
9 | #include <linux/fs.h> | |
10 | #include <linux/string.h> | |
11 | #include <linux/ctype.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/proc_fs.h> | |
7c0f6ba6 | 14 | #include <linux/uaccess.h> |
1da177e4 LT |
15 | #include "cifspdu.h" |
16 | #include "cifsglob.h" | |
17 | #include "cifsproto.h" | |
18 | #include "cifs_debug.h" | |
6c91d362 | 19 | #include "cifsfs.h" |
54be1f6c PA |
20 | #ifdef CONFIG_CIFS_DFS_UPCALL |
21 | #include "dfs_cache.h" | |
22 | #endif | |
d8ec913b LL |
23 | #ifdef CONFIG_CIFS_SMB_DIRECT |
24 | #include "smbdirect.h" | |
25 | #endif | |
1da177e4 LT |
26 | |
27 | void | |
28 | cifs_dump_mem(char *label, void *data, int length) | |
29 | { | |
0b456f04 | 30 | pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data); |
55d83e0d AS |
31 | print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4, |
32 | data, length, true); | |
1da177e4 LT |
33 | } |
34 | ||
14547f7d | 35 | void cifs_dump_detail(void *buf, struct TCP_Server_Info *server) |
3979877e | 36 | { |
8aa26f3e | 37 | #ifdef CONFIG_CIFS_DEBUG2 |
d4e4854f PS |
38 | struct smb_hdr *smb = (struct smb_hdr *)buf; |
39 | ||
f96637be JP |
40 | cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n", |
41 | smb->Command, smb->Status.CifsError, | |
42 | smb->Flags, smb->Flags2, smb->Mid, smb->Pid); | |
14547f7d | 43 | cifs_dbg(VFS, "smb buf %p len %u\n", smb, |
71992e62 | 44 | server->ops->calc_smb_size(smb, server)); |
8aa26f3e | 45 | #endif /* CONFIG_CIFS_DEBUG2 */ |
3979877e SF |
46 | } |
47 | ||
ffdd6e4d | 48 | void cifs_dump_mids(struct TCP_Server_Info *server) |
3979877e | 49 | { |
8aa26f3e | 50 | #ifdef CONFIG_CIFS_DEBUG2 |
3979877e | 51 | struct list_head *tmp; |
ffdd6e4d | 52 | struct mid_q_entry *mid_entry; |
3979877e | 53 | |
221601c3 | 54 | if (server == NULL) |
3979877e SF |
55 | return; |
56 | ||
f96637be | 57 | cifs_dbg(VFS, "Dump pending requests:\n"); |
3979877e SF |
58 | spin_lock(&GlobalMid_Lock); |
59 | list_for_each(tmp, &server->pending_mid_q) { | |
60 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
f96637be JP |
61 | cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n", |
62 | mid_entry->mid_state, | |
63 | le16_to_cpu(mid_entry->command), | |
64 | mid_entry->pid, | |
65 | mid_entry->callback_data, | |
66 | mid_entry->mid); | |
3979877e | 67 | #ifdef CONFIG_CIFS_STATS2 |
f96637be JP |
68 | cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n", |
69 | mid_entry->large_buf, | |
70 | mid_entry->resp_buf, | |
71 | mid_entry->when_received, | |
72 | jiffies); | |
3979877e | 73 | #endif /* STATS2 */ |
f96637be JP |
74 | cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n", |
75 | mid_entry->multiRsp, mid_entry->multiEnd); | |
ad8b15f0 | 76 | if (mid_entry->resp_buf) { |
71992e62 | 77 | cifs_dump_detail(mid_entry->resp_buf, server); |
ad8b15f0 SF |
78 | cifs_dump_mem("existing buf: ", |
79 | mid_entry->resp_buf, 62); | |
3979877e SF |
80 | } |
81 | } | |
82 | spin_unlock(&GlobalMid_Lock); | |
3979877e | 83 | #endif /* CONFIG_CIFS_DEBUG2 */ |
8aa26f3e | 84 | } |
3979877e | 85 | |
1da177e4 | 86 | #ifdef CONFIG_PROC_FS |
02cf5905 AA |
87 | static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon) |
88 | { | |
89 | __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType); | |
90 | ||
91 | seq_printf(m, "%s Mounts: %d ", tcon->treeName, tcon->tc_count); | |
92 | if (tcon->nativeFileSystem) | |
93 | seq_printf(m, "Type: %s ", tcon->nativeFileSystem); | |
94 | seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d", | |
95 | le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics), | |
96 | le32_to_cpu(tcon->fsAttrInfo.Attributes), | |
97 | le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength), | |
98 | tcon->tidStatus); | |
99 | if (dev_type == FILE_DEVICE_DISK) | |
100 | seq_puts(m, " type: DISK "); | |
101 | else if (dev_type == FILE_DEVICE_CD_ROM) | |
102 | seq_puts(m, " type: CDROM "); | |
103 | else | |
104 | seq_printf(m, " type: %d ", dev_type); | |
ab7b10cf SF |
105 | |
106 | seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number); | |
107 | ||
ffd1ef1e SF |
108 | if ((tcon->seal) || |
109 | (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) || | |
110 | (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA)) | |
ede2e520 | 111 | seq_printf(m, " Encrypted"); |
5c5a41be SF |
112 | if (tcon->nocase) |
113 | seq_printf(m, " nocase"); | |
ede2e520 SF |
114 | if (tcon->unix_ext) |
115 | seq_printf(m, " POSIX Extensions"); | |
02cf5905 AA |
116 | if (tcon->ses->server->ops->dump_share_caps) |
117 | tcon->ses->server->ops->dump_share_caps(m, tcon); | |
118 | ||
119 | if (tcon->need_reconnect) | |
120 | seq_puts(m, "\tDISCONNECTED "); | |
121 | seq_putc(m, '\n'); | |
122 | } | |
123 | ||
bc0fe8b2 AA |
124 | static void |
125 | cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface) | |
126 | { | |
127 | struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr; | |
128 | struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr; | |
129 | ||
35a90807 | 130 | seq_printf(m, "\tSpeed: %zu bps\n", iface->speed); |
bc0fe8b2 AA |
131 | seq_puts(m, "\t\tCapabilities: "); |
132 | if (iface->rdma_capable) | |
133 | seq_puts(m, "rdma "); | |
134 | if (iface->rss_capable) | |
135 | seq_puts(m, "rss "); | |
136 | seq_putc(m, '\n'); | |
137 | if (iface->sockaddr.ss_family == AF_INET) | |
138 | seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr); | |
139 | else if (iface->sockaddr.ss_family == AF_INET6) | |
140 | seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr); | |
141 | } | |
142 | ||
dfe33f9a SF |
143 | static int cifs_debug_files_proc_show(struct seq_file *m, void *v) |
144 | { | |
145 | struct list_head *stmp, *tmp, *tmp1, *tmp2; | |
146 | struct TCP_Server_Info *server; | |
147 | struct cifs_ses *ses; | |
148 | struct cifs_tcon *tcon; | |
149 | struct cifsFileInfo *cfile; | |
150 | ||
151 | seq_puts(m, "# Version:1\n"); | |
152 | seq_puts(m, "# Format:\n"); | |
153 | seq_puts(m, "# <tree id> <persistent fid> <flags> <count> <pid> <uid>"); | |
154 | #ifdef CONFIG_CIFS_DEBUG2 | |
155 | seq_printf(m, " <filename> <mid>\n"); | |
156 | #else | |
157 | seq_printf(m, " <filename>\n"); | |
158 | #endif /* CIFS_DEBUG2 */ | |
159 | spin_lock(&cifs_tcp_ses_lock); | |
160 | list_for_each(stmp, &cifs_tcp_ses_list) { | |
161 | server = list_entry(stmp, struct TCP_Server_Info, | |
162 | tcp_ses_list); | |
163 | list_for_each(tmp, &server->smb_ses_list) { | |
164 | ses = list_entry(tmp, struct cifs_ses, smb_ses_list); | |
165 | list_for_each(tmp1, &ses->tcon_list) { | |
166 | tcon = list_entry(tmp1, struct cifs_tcon, tcon_list); | |
167 | spin_lock(&tcon->open_file_lock); | |
168 | list_for_each(tmp2, &tcon->openFileList) { | |
169 | cfile = list_entry(tmp2, struct cifsFileInfo, | |
170 | tlist); | |
171 | seq_printf(m, | |
172 | "0x%x 0x%llx 0x%x %d %d %d %s", | |
173 | tcon->tid, | |
174 | cfile->fid.persistent_fid, | |
175 | cfile->f_flags, | |
176 | cfile->count, | |
177 | cfile->pid, | |
178 | from_kuid(&init_user_ns, cfile->uid), | |
179 | cfile->dentry->d_name.name); | |
180 | #ifdef CONFIG_CIFS_DEBUG2 | |
181 | seq_printf(m, " 0x%llx\n", cfile->fid.mid); | |
182 | #else | |
183 | seq_printf(m, "\n"); | |
184 | #endif /* CIFS_DEBUG2 */ | |
185 | } | |
186 | spin_unlock(&tcon->open_file_lock); | |
187 | } | |
188 | } | |
189 | } | |
190 | spin_unlock(&cifs_tcp_ses_lock); | |
191 | seq_putc(m, '\n'); | |
192 | return 0; | |
193 | } | |
194 | ||
f984c7b9 | 195 | static int cifs_debug_data_proc_show(struct seq_file *m, void *v) |
1da177e4 | 196 | { |
f1987b44 | 197 | struct list_head *tmp1, *tmp2, *tmp3; |
ffdd6e4d | 198 | struct mid_q_entry *mid_entry; |
14fbf50d | 199 | struct TCP_Server_Info *server; |
96daf2b0 SF |
200 | struct cifs_ses *ses; |
201 | struct cifs_tcon *tcon; | |
f1987b44 | 202 | int i, j; |
1da177e4 | 203 | |
f984c7b9 | 204 | seq_puts(m, |
1da177e4 LT |
205 | "Display Internal CIFS Data Structures for Debugging\n" |
206 | "---------------------------------------------------\n"); | |
f984c7b9 | 207 | seq_printf(m, "CIFS Version %s\n", CIFS_VERSION); |
ca40b714 | 208 | seq_printf(m, "Features:"); |
f579903e | 209 | #ifdef CONFIG_CIFS_DFS_UPCALL |
950132af | 210 | seq_printf(m, " DFS"); |
f579903e SJ |
211 | #endif |
212 | #ifdef CONFIG_CIFS_FSCACHE | |
950132af SF |
213 | seq_printf(m, ",FSCACHE"); |
214 | #endif | |
215 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
216 | seq_printf(m, ",SMB_DIRECT"); | |
217 | #endif | |
218 | #ifdef CONFIG_CIFS_STATS2 | |
219 | seq_printf(m, ",STATS2"); | |
d2586500 | 220 | #else |
950132af SF |
221 | seq_printf(m, ",STATS"); |
222 | #endif | |
223 | #ifdef CONFIG_CIFS_DEBUG2 | |
224 | seq_printf(m, ",DEBUG2"); | |
225 | #elif defined(CONFIG_CIFS_DEBUG) | |
226 | seq_printf(m, ",DEBUG"); | |
227 | #endif | |
228 | #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY | |
229 | seq_printf(m, ",ALLOW_INSECURE_LEGACY"); | |
f579903e SJ |
230 | #endif |
231 | #ifdef CONFIG_CIFS_WEAK_PW_HASH | |
950132af | 232 | seq_printf(m, ",WEAK_PW_HASH"); |
f579903e SJ |
233 | #endif |
234 | #ifdef CONFIG_CIFS_POSIX | |
950132af | 235 | seq_printf(m, ",CIFS_POSIX"); |
f579903e SJ |
236 | #endif |
237 | #ifdef CONFIG_CIFS_UPCALL | |
950132af | 238 | seq_printf(m, ",UPCALL(SPNEGO)"); |
f579903e SJ |
239 | #endif |
240 | #ifdef CONFIG_CIFS_XATTR | |
950132af | 241 | seq_printf(m, ",XATTR"); |
ca40b714 | 242 | #endif |
950132af | 243 | seq_printf(m, ",ACL"); |
f579903e | 244 | seq_putc(m, '\n'); |
a5f1a81f | 245 | seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize); |
f984c7b9 AD |
246 | seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid); |
247 | seq_printf(m, "Servers:"); | |
1da177e4 LT |
248 | |
249 | i = 0; | |
3f9bcca7 | 250 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
251 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
252 | server = list_entry(tmp1, struct TCP_Server_Info, | |
14fbf50d | 253 | tcp_ses_list); |
08a3b969 LL |
254 | |
255 | #ifdef CONFIG_CIFS_SMB_DIRECT | |
256 | if (!server->rdma) | |
257 | goto skip_rdma; | |
258 | ||
259 | seq_printf(m, "\nSMBDirect (in hex) protocol version: %x " | |
260 | "transport status: %x", | |
261 | server->smbd_conn->protocol, | |
262 | server->smbd_conn->transport_status); | |
263 | seq_printf(m, "\nConn receive_credit_max: %x " | |
264 | "send_credit_target: %x max_send_size: %x", | |
265 | server->smbd_conn->receive_credit_max, | |
266 | server->smbd_conn->send_credit_target, | |
267 | server->smbd_conn->max_send_size); | |
268 | seq_printf(m, "\nConn max_fragmented_recv_size: %x " | |
269 | "max_fragmented_send_size: %x max_receive_size:%x", | |
270 | server->smbd_conn->max_fragmented_recv_size, | |
271 | server->smbd_conn->max_fragmented_send_size, | |
272 | server->smbd_conn->max_receive_size); | |
273 | seq_printf(m, "\nConn keep_alive_interval: %x " | |
274 | "max_readwrite_size: %x rdma_readwrite_threshold: %x", | |
275 | server->smbd_conn->keep_alive_interval, | |
276 | server->smbd_conn->max_readwrite_size, | |
277 | server->smbd_conn->rdma_readwrite_threshold); | |
278 | seq_printf(m, "\nDebug count_get_receive_buffer: %x " | |
279 | "count_put_receive_buffer: %x count_send_empty: %x", | |
280 | server->smbd_conn->count_get_receive_buffer, | |
281 | server->smbd_conn->count_put_receive_buffer, | |
282 | server->smbd_conn->count_send_empty); | |
283 | seq_printf(m, "\nRead Queue count_reassembly_queue: %x " | |
284 | "count_enqueue_reassembly_queue: %x " | |
285 | "count_dequeue_reassembly_queue: %x " | |
286 | "fragment_reassembly_remaining: %x " | |
287 | "reassembly_data_length: %x " | |
288 | "reassembly_queue_length: %x", | |
289 | server->smbd_conn->count_reassembly_queue, | |
290 | server->smbd_conn->count_enqueue_reassembly_queue, | |
291 | server->smbd_conn->count_dequeue_reassembly_queue, | |
292 | server->smbd_conn->fragment_reassembly_remaining, | |
293 | server->smbd_conn->reassembly_data_length, | |
294 | server->smbd_conn->reassembly_queue_length); | |
295 | seq_printf(m, "\nCurrent Credits send_credits: %x " | |
296 | "receive_credits: %x receive_credit_target: %x", | |
297 | atomic_read(&server->smbd_conn->send_credits), | |
298 | atomic_read(&server->smbd_conn->receive_credits), | |
299 | server->smbd_conn->receive_credit_target); | |
e8b3bfe9 LL |
300 | seq_printf(m, "\nPending send_pending: %x " |
301 | "send_payload_pending: %x", | |
08a3b969 | 302 | atomic_read(&server->smbd_conn->send_pending), |
e8b3bfe9 | 303 | atomic_read(&server->smbd_conn->send_payload_pending)); |
08a3b969 LL |
304 | seq_printf(m, "\nReceive buffers count_receive_queue: %x " |
305 | "count_empty_packet_queue: %x", | |
306 | server->smbd_conn->count_receive_queue, | |
307 | server->smbd_conn->count_empty_packet_queue); | |
308 | seq_printf(m, "\nMR responder_resources: %x " | |
309 | "max_frmr_depth: %x mr_type: %x", | |
310 | server->smbd_conn->responder_resources, | |
311 | server->smbd_conn->max_frmr_depth, | |
312 | server->smbd_conn->mr_type); | |
313 | seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x", | |
314 | atomic_read(&server->smbd_conn->mr_ready_count), | |
315 | atomic_read(&server->smbd_conn->mr_used_count)); | |
316 | skip_rdma: | |
317 | #endif | |
ede2e520 SF |
318 | seq_printf(m, "\nNumber of credits: %d Dialect 0x%x", |
319 | server->credits, server->dialect); | |
26ea888f SF |
320 | if (server->compress_algorithm == SMB3_COMPRESS_LZNT1) |
321 | seq_printf(m, " COMPRESS_LZNT1"); | |
322 | else if (server->compress_algorithm == SMB3_COMPRESS_LZ77) | |
323 | seq_printf(m, " COMPRESS_LZ77"); | |
324 | else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF) | |
325 | seq_printf(m, " COMPRESS_LZ77_HUFF"); | |
ede2e520 SF |
326 | if (server->sign) |
327 | seq_printf(m, " signed"); | |
fcef0db6 SF |
328 | if (server->posix_ext_supported) |
329 | seq_printf(m, " posix"); | |
0fdfef9a | 330 | |
1da177e4 | 331 | i++; |
14fbf50d | 332 | list_for_each(tmp2, &server->smb_ses_list) { |
96daf2b0 | 333 | ses = list_entry(tmp2, struct cifs_ses, |
14fbf50d JL |
334 | smb_ses_list); |
335 | if ((ses->serverDomain == NULL) || | |
336 | (ses->serverOS == NULL) || | |
337 | (ses->serverNOS == NULL)) { | |
9e1a37da | 338 | seq_printf(m, "\n%d) Name: %s Uses: %d Capability: 0x%x\tSession Status: %d ", |
1fa089ec SF |
339 | i, ses->serverName, ses->ses_count, |
340 | ses->capabilities, ses->status); | |
341 | if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST) | |
342 | seq_printf(m, "Guest\t"); | |
343 | else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL) | |
344 | seq_printf(m, "Anonymous\t"); | |
14fbf50d JL |
345 | } else { |
346 | seq_printf(m, | |
f1987b44 JL |
347 | "\n%d) Name: %s Domain: %s Uses: %d OS:" |
348 | " %s\n\tNOS: %s\tCapability: 0x%x\n\tSMB" | |
9e1a37da | 349 | " session status: %d ", |
b8643e1b | 350 | i, ses->serverName, ses->serverDomain, |
14fbf50d | 351 | ses->ses_count, ses->serverOS, ses->serverNOS, |
221601c3 | 352 | ses->capabilities, ses->status); |
14fbf50d | 353 | } |
8339dd32 LL |
354 | if (server->rdma) |
355 | seq_printf(m, "RDMA\n\t"); | |
9e1a37da | 356 | seq_printf(m, "TCP status: %d Instance: %d\n\tLocal Users To " |
14fbf50d | 357 | "Server: %d SecMode: 0x%x Req On Wire: %d", |
9e1a37da SF |
358 | server->tcpStatus, |
359 | server->reconnect_instance, | |
360 | server->srv_count, | |
fc40f9cf | 361 | server->sec_mode, in_flight(server)); |
131afd0b SF |
362 | |
363 | #ifdef CONFIG_CIFS_STATS2 | |
f984c7b9 | 364 | seq_printf(m, " In Send: %d In MaxReq Wait: %d", |
789e6661 | 365 | atomic_read(&server->in_send), |
14fbf50d | 366 | atomic_read(&server->num_waiters)); |
131afd0b | 367 | #endif |
b63a9de0 SF |
368 | /* dump session id helpful for use with network trace */ |
369 | seq_printf(m, " SessionId: 0x%llx", ses->Suid); | |
ffd1ef1e SF |
370 | if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) |
371 | seq_puts(m, " encrypted"); | |
372 | if (ses->sign) | |
373 | seq_puts(m, " signed"); | |
131afd0b | 374 | |
f1987b44 JL |
375 | seq_puts(m, "\n\tShares:"); |
376 | j = 0; | |
02cf5905 AA |
377 | |
378 | seq_printf(m, "\n\t%d) IPC: ", j); | |
379 | if (ses->tcon_ipc) | |
380 | cifs_debug_tcon(m, ses->tcon_ipc); | |
381 | else | |
382 | seq_puts(m, "none\n"); | |
383 | ||
f1987b44 | 384 | list_for_each(tmp3, &ses->tcon_list) { |
96daf2b0 | 385 | tcon = list_entry(tmp3, struct cifs_tcon, |
f1987b44 JL |
386 | tcon_list); |
387 | ++j; | |
02cf5905 AA |
388 | seq_printf(m, "\n\t%d) ", j); |
389 | cifs_debug_tcon(m, tcon); | |
f1987b44 JL |
390 | } |
391 | ||
392 | seq_puts(m, "\n\tMIDs:\n"); | |
1da177e4 LT |
393 | |
394 | spin_lock(&GlobalMid_Lock); | |
14fbf50d | 395 | list_for_each(tmp3, &server->pending_mid_q) { |
f1987b44 | 396 | mid_entry = list_entry(tmp3, struct mid_q_entry, |
1da177e4 | 397 | qhead); |
f1987b44 | 398 | seq_printf(m, "\tState: %d com: %d pid:" |
7c9421e1 PS |
399 | " %d cbdata: %p mid %llu\n", |
400 | mid_entry->mid_state, | |
401 | le16_to_cpu(mid_entry->command), | |
402 | mid_entry->pid, | |
403 | mid_entry->callback_data, | |
404 | mid_entry->mid); | |
1da177e4 | 405 | } |
221601c3 | 406 | spin_unlock(&GlobalMid_Lock); |
bc0fe8b2 AA |
407 | |
408 | spin_lock(&ses->iface_lock); | |
115d5d28 SF |
409 | if (ses->iface_count) |
410 | seq_printf(m, "\n\tServer interfaces: %zu\n", | |
411 | ses->iface_count); | |
bc0fe8b2 | 412 | for (j = 0; j < ses->iface_count; j++) { |
35a90807 | 413 | seq_printf(m, "\t%d)", j); |
bc0fe8b2 AA |
414 | cifs_dump_iface(m, &ses->iface_list[j]); |
415 | } | |
416 | spin_unlock(&ses->iface_lock); | |
1da177e4 | 417 | } |
1da177e4 | 418 | } |
3f9bcca7 | 419 | spin_unlock(&cifs_tcp_ses_lock); |
f984c7b9 | 420 | seq_putc(m, '\n'); |
1da177e4 | 421 | |
1da177e4 | 422 | /* BB add code to dump additional info such as TCP session info now */ |
f984c7b9 AD |
423 | return 0; |
424 | } | |
1da177e4 | 425 | |
f984c7b9 AD |
426 | static ssize_t cifs_stats_proc_write(struct file *file, |
427 | const char __user *buffer, size_t count, loff_t *ppos) | |
1047abc1 | 428 | { |
28e2aed2 | 429 | bool bv; |
221601c3 | 430 | int rc; |
f1987b44 JL |
431 | struct list_head *tmp1, *tmp2, *tmp3; |
432 | struct TCP_Server_Info *server; | |
96daf2b0 SF |
433 | struct cifs_ses *ses; |
434 | struct cifs_tcon *tcon; | |
1047abc1 | 435 | |
1404297e KC |
436 | rc = kstrtobool_from_user(buffer, count, &bv); |
437 | if (rc == 0) { | |
4498eed5 | 438 | #ifdef CONFIG_CIFS_STATS2 |
468d6779 SF |
439 | int i; |
440 | ||
4498eed5 SF |
441 | atomic_set(&totBufAllocCount, 0); |
442 | atomic_set(&totSmBufAllocCount, 0); | |
443 | #endif /* CONFIG_CIFS_STATS2 */ | |
2c887635 SF |
444 | atomic_set(&tcpSesReconnectCount, 0); |
445 | atomic_set(&tconInfoReconnectCount, 0); | |
446 | ||
c281bc0c SF |
447 | spin_lock(&GlobalMid_Lock); |
448 | GlobalMaxActiveXid = 0; | |
449 | GlobalCurrentXid = 0; | |
450 | spin_unlock(&GlobalMid_Lock); | |
3f9bcca7 | 451 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
452 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
453 | server = list_entry(tmp1, struct TCP_Server_Info, | |
454 | tcp_ses_list); | |
468d6779 | 455 | #ifdef CONFIG_CIFS_STATS2 |
433b8dd7 SF |
456 | for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) { |
457 | atomic_set(&server->num_cmds[i], 0); | |
468d6779 | 458 | atomic_set(&server->smb2slowcmd[i], 0); |
433b8dd7 SF |
459 | server->time_per_cmd[i] = 0; |
460 | server->slowest_cmd[i] = 0; | |
461 | server->fastest_cmd[0] = 0; | |
462 | } | |
468d6779 | 463 | #endif /* CONFIG_CIFS_STATS2 */ |
c2b3382c | 464 | list_for_each(tmp2, &server->smb_ses_list) { |
96daf2b0 | 465 | ses = list_entry(tmp2, struct cifs_ses, |
c2b3382c | 466 | smb_ses_list); |
f1987b44 JL |
467 | list_for_each(tmp3, &ses->tcon_list) { |
468 | tcon = list_entry(tmp3, | |
96daf2b0 | 469 | struct cifs_tcon, |
f1987b44 JL |
470 | tcon_list); |
471 | atomic_set(&tcon->num_smbs_sent, 0); | |
c281bc0c SF |
472 | spin_lock(&tcon->stat_lock); |
473 | tcon->bytes_read = 0; | |
474 | tcon->bytes_written = 0; | |
475 | spin_unlock(&tcon->stat_lock); | |
44c58186 PS |
476 | if (server->ops->clear_stats) |
477 | server->ops->clear_stats(tcon); | |
f1987b44 JL |
478 | } |
479 | } | |
1047abc1 | 480 | } |
3f9bcca7 | 481 | spin_unlock(&cifs_tcp_ses_lock); |
1404297e KC |
482 | } else { |
483 | return rc; | |
1047abc1 SF |
484 | } |
485 | ||
221601c3 | 486 | return count; |
1047abc1 SF |
487 | } |
488 | ||
f984c7b9 | 489 | static int cifs_stats_proc_show(struct seq_file *m, void *v) |
1da177e4 | 490 | { |
f984c7b9 | 491 | int i; |
468d6779 SF |
492 | #ifdef CONFIG_CIFS_STATS2 |
493 | int j; | |
494 | #endif /* STATS2 */ | |
f1987b44 JL |
495 | struct list_head *tmp1, *tmp2, *tmp3; |
496 | struct TCP_Server_Info *server; | |
96daf2b0 SF |
497 | struct cifs_ses *ses; |
498 | struct cifs_tcon *tcon; | |
1da177e4 | 499 | |
468d6779 | 500 | seq_printf(m, "Resources in use\nCIFS Session: %d\n", |
1da177e4 | 501 | sesInfoAllocCount.counter); |
f984c7b9 | 502 | seq_printf(m, "Share (unique mount targets): %d\n", |
1da177e4 | 503 | tconInfoAllocCount.counter); |
f984c7b9 | 504 | seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n", |
b8643e1b SF |
505 | bufAllocCount.counter, |
506 | cifs_min_rcv + tcpSesAllocCount.counter); | |
f984c7b9 | 507 | seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n", |
221601c3 | 508 | smBufAllocCount.counter, cifs_min_small); |
07475ffb | 509 | #ifdef CONFIG_CIFS_STATS2 |
f984c7b9 | 510 | seq_printf(m, "Total Large %d Small %d Allocations\n", |
07475ffb | 511 | atomic_read(&totBufAllocCount), |
221601c3 | 512 | atomic_read(&totSmBufAllocCount)); |
07475ffb SF |
513 | #endif /* CONFIG_CIFS_STATS2 */ |
514 | ||
8097531a | 515 | seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount)); |
f984c7b9 | 516 | seq_printf(m, |
1da177e4 | 517 | "\n%d session %d share reconnects\n", |
221601c3 | 518 | tcpSesReconnectCount.counter, tconInfoReconnectCount.counter); |
1da177e4 | 519 | |
f984c7b9 | 520 | seq_printf(m, |
1da177e4 | 521 | "Total vfs operations: %d maximum at one time: %d\n", |
221601c3 | 522 | GlobalCurrentXid, GlobalMaxActiveXid); |
1da177e4 LT |
523 | |
524 | i = 0; | |
3f9bcca7 | 525 | spin_lock(&cifs_tcp_ses_lock); |
f1987b44 JL |
526 | list_for_each(tmp1, &cifs_tcp_ses_list) { |
527 | server = list_entry(tmp1, struct TCP_Server_Info, | |
528 | tcp_ses_list); | |
468d6779 | 529 | #ifdef CONFIG_CIFS_STATS2 |
433b8dd7 SF |
530 | seq_puts(m, "\nTotal time spent processing by command. Time "); |
531 | seq_printf(m, "units are jiffies (%d per second)\n", HZ); | |
532 | seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n"); | |
533 | seq_puts(m, " --------\t------\t----------\t-------\t-------\n"); | |
534 | for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) | |
535 | seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j, | |
536 | atomic_read(&server->num_cmds[j]), | |
537 | server->time_per_cmd[j], | |
538 | server->fastest_cmd[j], | |
539 | server->slowest_cmd[j]); | |
468d6779 SF |
540 | for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++) |
541 | if (atomic_read(&server->smb2slowcmd[j])) | |
433b8dd7 | 542 | seq_printf(m, " %d slow responses from %s for command %d\n", |
468d6779 SF |
543 | atomic_read(&server->smb2slowcmd[j]), |
544 | server->hostname, j); | |
545 | #endif /* STATS2 */ | |
f1987b44 | 546 | list_for_each(tmp2, &server->smb_ses_list) { |
96daf2b0 | 547 | ses = list_entry(tmp2, struct cifs_ses, |
f1987b44 JL |
548 | smb_ses_list); |
549 | list_for_each(tmp3, &ses->tcon_list) { | |
550 | tcon = list_entry(tmp3, | |
96daf2b0 | 551 | struct cifs_tcon, |
f1987b44 JL |
552 | tcon_list); |
553 | i++; | |
554 | seq_printf(m, "\n%d) %s", i, tcon->treeName); | |
555 | if (tcon->need_reconnect) | |
556 | seq_puts(m, "\tDISCONNECTED "); | |
44c58186 PS |
557 | seq_printf(m, "\nSMBs: %d", |
558 | atomic_read(&tcon->num_smbs_sent)); | |
559 | if (server->ops->print_stats) | |
560 | server->ops->print_stats(m, tcon); | |
f1987b44 JL |
561 | } |
562 | } | |
1da177e4 | 563 | } |
3f9bcca7 | 564 | spin_unlock(&cifs_tcp_ses_lock); |
1da177e4 | 565 | |
f984c7b9 AD |
566 | seq_putc(m, '\n'); |
567 | return 0; | |
568 | } | |
221601c3 | 569 | |
f984c7b9 AD |
570 | static int cifs_stats_proc_open(struct inode *inode, struct file *file) |
571 | { | |
572 | return single_open(file, cifs_stats_proc_show, NULL); | |
1da177e4 | 573 | } |
f984c7b9 AD |
574 | |
575 | static const struct file_operations cifs_stats_proc_fops = { | |
f984c7b9 AD |
576 | .open = cifs_stats_proc_open, |
577 | .read = seq_read, | |
578 | .llseek = seq_lseek, | |
579 | .release = single_release, | |
580 | .write = cifs_stats_proc_write, | |
581 | }; | |
1da177e4 | 582 | |
d8ec913b LL |
583 | #ifdef CONFIG_CIFS_SMB_DIRECT |
584 | #define PROC_FILE_DEFINE(name) \ | |
585 | static ssize_t name##_write(struct file *file, const char __user *buffer, \ | |
586 | size_t count, loff_t *ppos) \ | |
587 | { \ | |
588 | int rc; \ | |
589 | rc = kstrtoint_from_user(buffer, count, 10, & name); \ | |
590 | if (rc) \ | |
591 | return rc; \ | |
592 | return count; \ | |
593 | } \ | |
594 | static int name##_proc_show(struct seq_file *m, void *v) \ | |
595 | { \ | |
596 | seq_printf(m, "%d\n", name ); \ | |
597 | return 0; \ | |
598 | } \ | |
599 | static int name##_open(struct inode *inode, struct file *file) \ | |
600 | { \ | |
601 | return single_open(file, name##_proc_show, NULL); \ | |
602 | } \ | |
603 | \ | |
604 | static const struct file_operations cifs_##name##_proc_fops = { \ | |
605 | .open = name##_open, \ | |
606 | .read = seq_read, \ | |
607 | .llseek = seq_lseek, \ | |
608 | .release = single_release, \ | |
609 | .write = name##_write, \ | |
610 | } | |
611 | ||
d8ec913b LL |
612 | PROC_FILE_DEFINE(rdma_readwrite_threshold); |
613 | PROC_FILE_DEFINE(smbd_max_frmr_depth); | |
614 | PROC_FILE_DEFINE(smbd_keep_alive_interval); | |
615 | PROC_FILE_DEFINE(smbd_max_receive_size); | |
616 | PROC_FILE_DEFINE(smbd_max_fragmented_recv_size); | |
617 | PROC_FILE_DEFINE(smbd_max_send_size); | |
618 | PROC_FILE_DEFINE(smbd_send_credit_target); | |
619 | PROC_FILE_DEFINE(smbd_receive_credit_max); | |
620 | #endif | |
621 | ||
1da177e4 | 622 | static struct proc_dir_entry *proc_fs_cifs; |
f984c7b9 | 623 | static const struct file_operations cifsFYI_proc_fops; |
f984c7b9 AD |
624 | static const struct file_operations cifs_lookup_cache_proc_fops; |
625 | static const struct file_operations traceSMB_proc_fops; | |
f984c7b9 | 626 | static const struct file_operations cifs_security_flags_proc_fops; |
f984c7b9 | 627 | static const struct file_operations cifs_linux_ext_proc_fops; |
1da177e4 LT |
628 | |
629 | void | |
630 | cifs_proc_init(void) | |
631 | { | |
36a5aeb8 | 632 | proc_fs_cifs = proc_mkdir("fs/cifs", NULL); |
1da177e4 LT |
633 | if (proc_fs_cifs == NULL) |
634 | return; | |
635 | ||
3f3942ac CH |
636 | proc_create_single("DebugData", 0, proc_fs_cifs, |
637 | cifs_debug_data_proc_show); | |
1da177e4 | 638 | |
dfe33f9a SF |
639 | proc_create_single("open_files", 0400, proc_fs_cifs, |
640 | cifs_debug_files_proc_show); | |
641 | ||
6539e7f3 | 642 | proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_fops); |
6539e7f3 RS |
643 | proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_fops); |
644 | proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_fops); | |
645 | proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs, | |
99b1f5b2 | 646 | &cifs_linux_ext_proc_fops); |
6539e7f3 | 647 | proc_create("SecurityFlags", 0644, proc_fs_cifs, |
99b1f5b2 | 648 | &cifs_security_flags_proc_fops); |
6539e7f3 | 649 | proc_create("LookupCacheEnabled", 0644, proc_fs_cifs, |
99b1f5b2 | 650 | &cifs_lookup_cache_proc_fops); |
54be1f6c PA |
651 | |
652 | #ifdef CONFIG_CIFS_DFS_UPCALL | |
653 | proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_fops); | |
654 | #endif | |
655 | ||
d8ec913b | 656 | #ifdef CONFIG_CIFS_SMB_DIRECT |
6539e7f3 | 657 | proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs, |
d8ec913b | 658 | &cifs_rdma_readwrite_threshold_proc_fops); |
6539e7f3 | 659 | proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs, |
d8ec913b | 660 | &cifs_smbd_max_frmr_depth_proc_fops); |
6539e7f3 | 661 | proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs, |
d8ec913b | 662 | &cifs_smbd_keep_alive_interval_proc_fops); |
6539e7f3 | 663 | proc_create("smbd_max_receive_size", 0644, proc_fs_cifs, |
d8ec913b | 664 | &cifs_smbd_max_receive_size_proc_fops); |
6539e7f3 | 665 | proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs, |
d8ec913b | 666 | &cifs_smbd_max_fragmented_recv_size_proc_fops); |
6539e7f3 | 667 | proc_create("smbd_max_send_size", 0644, proc_fs_cifs, |
d8ec913b | 668 | &cifs_smbd_max_send_size_proc_fops); |
6539e7f3 | 669 | proc_create("smbd_send_credit_target", 0644, proc_fs_cifs, |
d8ec913b | 670 | &cifs_smbd_send_credit_target_proc_fops); |
6539e7f3 | 671 | proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs, |
d8ec913b LL |
672 | &cifs_smbd_receive_credit_max_proc_fops); |
673 | #endif | |
1da177e4 LT |
674 | } |
675 | ||
676 | void | |
677 | cifs_proc_clean(void) | |
678 | { | |
679 | if (proc_fs_cifs == NULL) | |
680 | return; | |
681 | ||
682 | remove_proc_entry("DebugData", proc_fs_cifs); | |
dfe33f9a | 683 | remove_proc_entry("open_files", proc_fs_cifs); |
1da177e4 LT |
684 | remove_proc_entry("cifsFYI", proc_fs_cifs); |
685 | remove_proc_entry("traceSMB", proc_fs_cifs); | |
1da177e4 | 686 | remove_proc_entry("Stats", proc_fs_cifs); |
221601c3 | 687 | remove_proc_entry("SecurityFlags", proc_fs_cifs); |
221601c3 | 688 | remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs); |
221601c3 | 689 | remove_proc_entry("LookupCacheEnabled", proc_fs_cifs); |
54be1f6c PA |
690 | |
691 | #ifdef CONFIG_CIFS_DFS_UPCALL | |
692 | remove_proc_entry("dfscache", proc_fs_cifs); | |
693 | #endif | |
d8ec913b LL |
694 | #ifdef CONFIG_CIFS_SMB_DIRECT |
695 | remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs); | |
696 | remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs); | |
697 | remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs); | |
698 | remove_proc_entry("smbd_max_receive_size", proc_fs_cifs); | |
699 | remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs); | |
700 | remove_proc_entry("smbd_max_send_size", proc_fs_cifs); | |
701 | remove_proc_entry("smbd_send_credit_target", proc_fs_cifs); | |
702 | remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs); | |
703 | #endif | |
36a5aeb8 | 704 | remove_proc_entry("fs/cifs", NULL); |
1da177e4 LT |
705 | } |
706 | ||
f984c7b9 | 707 | static int cifsFYI_proc_show(struct seq_file *m, void *v) |
1da177e4 | 708 | { |
f984c7b9 AD |
709 | seq_printf(m, "%d\n", cifsFYI); |
710 | return 0; | |
711 | } | |
1da177e4 | 712 | |
f984c7b9 AD |
713 | static int cifsFYI_proc_open(struct inode *inode, struct file *file) |
714 | { | |
715 | return single_open(file, cifsFYI_proc_show, NULL); | |
1da177e4 | 716 | } |
f984c7b9 AD |
717 | |
718 | static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer, | |
719 | size_t count, loff_t *ppos) | |
1da177e4 | 720 | { |
1404297e | 721 | char c[2] = { '\0' }; |
28e2aed2 | 722 | bool bv; |
1da177e4 LT |
723 | int rc; |
724 | ||
1404297e | 725 | rc = get_user(c[0], buffer); |
1da177e4 LT |
726 | if (rc) |
727 | return rc; | |
1404297e | 728 | if (strtobool(c, &bv) == 0) |
28e2aed2 | 729 | cifsFYI = bv; |
1404297e KC |
730 | else if ((c[0] > '1') && (c[0] <= '9')) |
731 | cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */ | |
25ad1cbd RS |
732 | else |
733 | return -EINVAL; | |
1da177e4 LT |
734 | |
735 | return count; | |
736 | } | |
737 | ||
f984c7b9 | 738 | static const struct file_operations cifsFYI_proc_fops = { |
f984c7b9 AD |
739 | .open = cifsFYI_proc_open, |
740 | .read = seq_read, | |
741 | .llseek = seq_lseek, | |
742 | .release = single_release, | |
743 | .write = cifsFYI_proc_write, | |
744 | }; | |
1da177e4 | 745 | |
f984c7b9 AD |
746 | static int cifs_linux_ext_proc_show(struct seq_file *m, void *v) |
747 | { | |
748 | seq_printf(m, "%d\n", linuxExtEnabled); | |
749 | return 0; | |
750 | } | |
1da177e4 | 751 | |
f984c7b9 AD |
752 | static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file) |
753 | { | |
754 | return single_open(file, cifs_linux_ext_proc_show, NULL); | |
1da177e4 | 755 | } |
f984c7b9 AD |
756 | |
757 | static ssize_t cifs_linux_ext_proc_write(struct file *file, | |
758 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 759 | { |
221601c3 SF |
760 | int rc; |
761 | ||
1404297e | 762 | rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled); |
221601c3 SF |
763 | if (rc) |
764 | return rc; | |
28e2aed2 | 765 | |
221601c3 | 766 | return count; |
1da177e4 LT |
767 | } |
768 | ||
f984c7b9 | 769 | static const struct file_operations cifs_linux_ext_proc_fops = { |
f984c7b9 AD |
770 | .open = cifs_linux_ext_proc_open, |
771 | .read = seq_read, | |
772 | .llseek = seq_lseek, | |
773 | .release = single_release, | |
774 | .write = cifs_linux_ext_proc_write, | |
775 | }; | |
1da177e4 | 776 | |
f984c7b9 | 777 | static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v) |
1da177e4 | 778 | { |
f984c7b9 AD |
779 | seq_printf(m, "%d\n", lookupCacheEnabled); |
780 | return 0; | |
781 | } | |
1da177e4 | 782 | |
f984c7b9 AD |
783 | static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file) |
784 | { | |
785 | return single_open(file, cifs_lookup_cache_proc_show, NULL); | |
1da177e4 | 786 | } |
f984c7b9 AD |
787 | |
788 | static ssize_t cifs_lookup_cache_proc_write(struct file *file, | |
789 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 790 | { |
1da177e4 LT |
791 | int rc; |
792 | ||
1404297e | 793 | rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled); |
1da177e4 LT |
794 | if (rc) |
795 | return rc; | |
28e2aed2 | 796 | |
1da177e4 LT |
797 | return count; |
798 | } | |
1da177e4 | 799 | |
f984c7b9 | 800 | static const struct file_operations cifs_lookup_cache_proc_fops = { |
f984c7b9 AD |
801 | .open = cifs_lookup_cache_proc_open, |
802 | .read = seq_read, | |
803 | .llseek = seq_lseek, | |
804 | .release = single_release, | |
805 | .write = cifs_lookup_cache_proc_write, | |
806 | }; | |
1da177e4 | 807 | |
f984c7b9 AD |
808 | static int traceSMB_proc_show(struct seq_file *m, void *v) |
809 | { | |
810 | seq_printf(m, "%d\n", traceSMB); | |
811 | return 0; | |
812 | } | |
1da177e4 | 813 | |
f984c7b9 AD |
814 | static int traceSMB_proc_open(struct inode *inode, struct file *file) |
815 | { | |
816 | return single_open(file, traceSMB_proc_show, NULL); | |
1da177e4 | 817 | } |
f984c7b9 AD |
818 | |
819 | static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer, | |
820 | size_t count, loff_t *ppos) | |
1da177e4 | 821 | { |
1da177e4 LT |
822 | int rc; |
823 | ||
1404297e | 824 | rc = kstrtobool_from_user(buffer, count, &traceSMB); |
1da177e4 LT |
825 | if (rc) |
826 | return rc; | |
28e2aed2 | 827 | |
1da177e4 LT |
828 | return count; |
829 | } | |
830 | ||
f984c7b9 | 831 | static const struct file_operations traceSMB_proc_fops = { |
f984c7b9 AD |
832 | .open = traceSMB_proc_open, |
833 | .read = seq_read, | |
834 | .llseek = seq_lseek, | |
835 | .release = single_release, | |
836 | .write = traceSMB_proc_write, | |
837 | }; | |
1da177e4 | 838 | |
f984c7b9 AD |
839 | static int cifs_security_flags_proc_show(struct seq_file *m, void *v) |
840 | { | |
04912d6a | 841 | seq_printf(m, "0x%x\n", global_secflags); |
f984c7b9 AD |
842 | return 0; |
843 | } | |
1da177e4 | 844 | |
f984c7b9 AD |
845 | static int cifs_security_flags_proc_open(struct inode *inode, struct file *file) |
846 | { | |
847 | return single_open(file, cifs_security_flags_proc_show, NULL); | |
1da177e4 | 848 | } |
f984c7b9 | 849 | |
52dfb446 JL |
850 | /* |
851 | * Ensure that if someone sets a MUST flag, that we disable all other MAY | |
852 | * flags except for the ones corresponding to the given MUST flag. If there are | |
853 | * multiple MUST flags, then try to prefer more secure ones. | |
854 | */ | |
855 | static void | |
856 | cifs_security_flags_handle_must_flags(unsigned int *flags) | |
857 | { | |
858 | unsigned int signflags = *flags & CIFSSEC_MUST_SIGN; | |
859 | ||
860 | if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5) | |
861 | *flags = CIFSSEC_MUST_KRB5; | |
862 | else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP) | |
863 | *flags = CIFSSEC_MUST_NTLMSSP; | |
864 | else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2) | |
865 | *flags = CIFSSEC_MUST_NTLMV2; | |
866 | else if ((*flags & CIFSSEC_MUST_NTLM) == CIFSSEC_MUST_NTLM) | |
867 | *flags = CIFSSEC_MUST_NTLM; | |
7a1ceba0 NC |
868 | else if (CIFSSEC_MUST_LANMAN && |
869 | (*flags & CIFSSEC_MUST_LANMAN) == CIFSSEC_MUST_LANMAN) | |
52dfb446 | 870 | *flags = CIFSSEC_MUST_LANMAN; |
7a1ceba0 NC |
871 | else if (CIFSSEC_MUST_PLNTXT && |
872 | (*flags & CIFSSEC_MUST_PLNTXT) == CIFSSEC_MUST_PLNTXT) | |
52dfb446 JL |
873 | *flags = CIFSSEC_MUST_PLNTXT; |
874 | ||
875 | *flags |= signflags; | |
876 | } | |
877 | ||
f984c7b9 AD |
878 | static ssize_t cifs_security_flags_proc_write(struct file *file, |
879 | const char __user *buffer, size_t count, loff_t *ppos) | |
1da177e4 | 880 | { |
7715dad8 | 881 | int rc; |
bdc4bf6e SF |
882 | unsigned int flags; |
883 | char flags_string[12]; | |
28e2aed2 | 884 | bool bv; |
bdc4bf6e | 885 | |
221601c3 | 886 | if ((count < 1) || (count > 11)) |
3979877e | 887 | return -EINVAL; |
1da177e4 | 888 | |
bdc4bf6e | 889 | memset(flags_string, 0, 12); |
3979877e | 890 | |
221601c3 | 891 | if (copy_from_user(flags_string, buffer, count)) |
bdc4bf6e | 892 | return -EFAULT; |
3979877e | 893 | |
221601c3 | 894 | if (count < 3) { |
bdc4bf6e | 895 | /* single char or single char followed by null */ |
1404297e | 896 | if (strtobool(flags_string, &bv) == 0) { |
28e2aed2 | 897 | global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF; |
a013689d | 898 | return count; |
1404297e | 899 | } else if (!isdigit(flags_string[0])) { |
7715dad8 JL |
900 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", |
901 | flags_string); | |
a013689d SF |
902 | return -EINVAL; |
903 | } | |
bdc4bf6e | 904 | } |
bdc4bf6e | 905 | |
7715dad8 JL |
906 | /* else we have a number */ |
907 | rc = kstrtouint(flags_string, 0, &flags); | |
908 | if (rc) { | |
909 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", | |
910 | flags_string); | |
911 | return rc; | |
912 | } | |
bdc4bf6e | 913 | |
f96637be | 914 | cifs_dbg(FYI, "sec flags 0x%x\n", flags); |
bdc4bf6e | 915 | |
7715dad8 JL |
916 | if (flags == 0) { |
917 | cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string); | |
bdc4bf6e SF |
918 | return -EINVAL; |
919 | } | |
1da177e4 | 920 | |
221601c3 | 921 | if (flags & ~CIFSSEC_MASK) { |
7715dad8 | 922 | cifs_dbg(VFS, "Unsupported security flags: 0x%x\n", |
f96637be | 923 | flags & ~CIFSSEC_MASK); |
bdc4bf6e SF |
924 | return -EINVAL; |
925 | } | |
7715dad8 | 926 | |
52dfb446 JL |
927 | cifs_security_flags_handle_must_flags(&flags); |
928 | ||
bdc4bf6e | 929 | /* flags look ok - update the global security flags for cifs module */ |
04912d6a JL |
930 | global_secflags = flags; |
931 | if (global_secflags & CIFSSEC_MUST_SIGN) { | |
762e5ab7 | 932 | /* requiring signing implies signing is allowed */ |
04912d6a | 933 | global_secflags |= CIFSSEC_MAY_SIGN; |
f96637be | 934 | cifs_dbg(FYI, "packet signing now required\n"); |
04912d6a | 935 | } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) { |
f96637be | 936 | cifs_dbg(FYI, "packet signing disabled\n"); |
762e5ab7 SF |
937 | } |
938 | /* BB should we turn on MAY flags for other MUST options? */ | |
1da177e4 LT |
939 | return count; |
940 | } | |
f984c7b9 AD |
941 | |
942 | static const struct file_operations cifs_security_flags_proc_fops = { | |
f984c7b9 AD |
943 | .open = cifs_security_flags_proc_open, |
944 | .read = seq_read, | |
945 | .llseek = seq_lseek, | |
946 | .release = single_release, | |
947 | .write = cifs_security_flags_proc_write, | |
948 | }; | |
90c81e0b | 949 | #else |
e086fcea | 950 | inline void cifs_proc_init(void) |
90c81e0b SF |
951 | { |
952 | } | |
953 | ||
e086fcea | 954 | inline void cifs_proc_clean(void) |
90c81e0b SF |
955 | { |
956 | } | |
957 | #endif /* PROC_FS */ |