1 |
/* |
2 |
* security/ccsecurity/util.c |
3 |
* |
4 |
* Copyright (C) 2005-2009 NTT DATA CORPORATION |
5 |
* |
6 |
* Version: 1.7.0-pre 2009/08/24 |
7 |
* |
8 |
* This file is applicable to both 2.4.30 and 2.6.11 and later. |
9 |
* See README.ccs for ChangeLog. |
10 |
* |
11 |
*/ |
12 |
|
13 |
#include "internal.h" |
14 |
|
15 |
/* Lock for protecting policy. */ |
16 |
DEFINE_MUTEX(ccs_policy_lock); |
17 |
|
18 |
/* Has /sbin/init started? */ |
19 |
bool ccs_policy_loaded; |
20 |
|
21 |
/* Profile table. Memory is allocated as needed. */ |
22 |
struct ccs_profile *ccs_profile_ptr[CCS_MAX_PROFILES]; |
23 |
|
24 |
/* Index table for searching parent category. */ |
25 |
static const u8 ccs_index2category[CCS_MAX_MAC_INDEX + |
26 |
CCS_MAX_CAPABILITY_INDEX] = { |
27 |
[CCS_MAC_FILE_EXECUTE] = CCS_MAC_CATEGORY_FILE, |
28 |
[CCS_MAC_FILE_OPEN] = CCS_MAC_CATEGORY_FILE, |
29 |
[CCS_MAC_FILE_CREATE] = CCS_MAC_CATEGORY_FILE, |
30 |
[CCS_MAC_FILE_UNLINK] = CCS_MAC_CATEGORY_FILE, |
31 |
[CCS_MAC_FILE_MKDIR] = CCS_MAC_CATEGORY_FILE, |
32 |
[CCS_MAC_FILE_RMDIR] = CCS_MAC_CATEGORY_FILE, |
33 |
[CCS_MAC_FILE_MKFIFO] = CCS_MAC_CATEGORY_FILE, |
34 |
[CCS_MAC_FILE_MKSOCK] = CCS_MAC_CATEGORY_FILE, |
35 |
[CCS_MAC_FILE_TRUNCATE] = CCS_MAC_CATEGORY_FILE, |
36 |
[CCS_MAC_FILE_SYMLINK] = CCS_MAC_CATEGORY_FILE, |
37 |
[CCS_MAC_FILE_REWRITE] = CCS_MAC_CATEGORY_FILE, |
38 |
[CCS_MAC_FILE_MKBLOCK] = CCS_MAC_CATEGORY_FILE, |
39 |
[CCS_MAC_FILE_MKCHAR] = CCS_MAC_CATEGORY_FILE, |
40 |
[CCS_MAC_FILE_LINK] = CCS_MAC_CATEGORY_FILE, |
41 |
[CCS_MAC_FILE_RENAME] = CCS_MAC_CATEGORY_FILE, |
42 |
[CCS_MAC_FILE_CHMOD] = CCS_MAC_CATEGORY_FILE, |
43 |
[CCS_MAC_FILE_CHOWN] = CCS_MAC_CATEGORY_FILE, |
44 |
[CCS_MAC_FILE_CHGRP] = CCS_MAC_CATEGORY_FILE, |
45 |
[CCS_MAC_FILE_IOCTL] = CCS_MAC_CATEGORY_FILE, |
46 |
[CCS_MAC_FILE_CHROOT] = CCS_MAC_CATEGORY_FILE, |
47 |
[CCS_MAC_FILE_MOUNT] = CCS_MAC_CATEGORY_FILE, |
48 |
[CCS_MAC_FILE_UMOUNT] = CCS_MAC_CATEGORY_FILE, |
49 |
[CCS_MAC_FILE_PIVOT_ROOT] = CCS_MAC_CATEGORY_FILE, |
50 |
[CCS_MAC_ENVIRON] = CCS_MAC_CATEGORY_MISC, |
51 |
[CCS_MAC_NETWORK_UDP_BIND] = CCS_MAC_CATEGORY_NETWORK, |
52 |
[CCS_MAC_NETWORK_UDP_CONNECT] = CCS_MAC_CATEGORY_NETWORK, |
53 |
[CCS_MAC_NETWORK_TCP_BIND] = CCS_MAC_CATEGORY_NETWORK, |
54 |
[CCS_MAC_NETWORK_TCP_LISTEN] = CCS_MAC_CATEGORY_NETWORK, |
55 |
[CCS_MAC_NETWORK_TCP_CONNECT] = CCS_MAC_CATEGORY_NETWORK, |
56 |
[CCS_MAC_NETWORK_TCP_ACCEPT] = CCS_MAC_CATEGORY_NETWORK, |
57 |
[CCS_MAC_NETWORK_RAW_BIND] = CCS_MAC_CATEGORY_NETWORK, |
58 |
[CCS_MAC_NETWORK_RAW_CONNECT] = CCS_MAC_CATEGORY_NETWORK, |
59 |
[CCS_MAC_SIGNAL] = CCS_MAC_CATEGORY_IPC, |
60 |
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CREATE] |
61 |
= CCS_MAC_CATEGORY_CAPABILITY, |
62 |
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_LISTEN] |
63 |
= CCS_MAC_CATEGORY_CAPABILITY, |
64 |
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CONNECT] |
65 |
= CCS_MAC_CATEGORY_CAPABILITY, |
66 |
[CCS_MAX_MAC_INDEX + CCS_USE_INET_DGRAM_SOCKET] |
67 |
= CCS_MAC_CATEGORY_CAPABILITY, |
68 |
[CCS_MAX_MAC_INDEX + CCS_USE_INET_RAW_SOCKET] |
69 |
= CCS_MAC_CATEGORY_CAPABILITY, |
70 |
[CCS_MAX_MAC_INDEX + CCS_USE_ROUTE_SOCKET] |
71 |
= CCS_MAC_CATEGORY_CAPABILITY, |
72 |
[CCS_MAX_MAC_INDEX + CCS_USE_PACKET_SOCKET] |
73 |
= CCS_MAC_CATEGORY_CAPABILITY, |
74 |
[CCS_MAX_MAC_INDEX + CCS_SYS_MOUNT] |
75 |
= CCS_MAC_CATEGORY_CAPABILITY, |
76 |
[CCS_MAX_MAC_INDEX + CCS_SYS_UMOUNT] |
77 |
= CCS_MAC_CATEGORY_CAPABILITY, |
78 |
[CCS_MAX_MAC_INDEX + CCS_SYS_REBOOT] |
79 |
= CCS_MAC_CATEGORY_CAPABILITY, |
80 |
[CCS_MAX_MAC_INDEX + CCS_SYS_CHROOT] |
81 |
= CCS_MAC_CATEGORY_CAPABILITY, |
82 |
[CCS_MAX_MAC_INDEX + CCS_SYS_KILL] |
83 |
= CCS_MAC_CATEGORY_CAPABILITY, |
84 |
[CCS_MAX_MAC_INDEX + CCS_SYS_VHANGUP] |
85 |
= CCS_MAC_CATEGORY_CAPABILITY, |
86 |
[CCS_MAX_MAC_INDEX + CCS_SYS_SETTIME] |
87 |
= CCS_MAC_CATEGORY_CAPABILITY, |
88 |
[CCS_MAX_MAC_INDEX + CCS_SYS_NICE] |
89 |
= CCS_MAC_CATEGORY_CAPABILITY, |
90 |
[CCS_MAX_MAC_INDEX + CCS_SYS_SETHOSTNAME] |
91 |
= CCS_MAC_CATEGORY_CAPABILITY, |
92 |
[CCS_MAX_MAC_INDEX + CCS_USE_KERNEL_MODULE] |
93 |
= CCS_MAC_CATEGORY_CAPABILITY, |
94 |
[CCS_MAX_MAC_INDEX + CCS_CREATE_FIFO] |
95 |
= CCS_MAC_CATEGORY_CAPABILITY, |
96 |
[CCS_MAX_MAC_INDEX + CCS_CREATE_BLOCK_DEV] |
97 |
= CCS_MAC_CATEGORY_CAPABILITY, |
98 |
[CCS_MAX_MAC_INDEX + CCS_CREATE_CHAR_DEV] |
99 |
= CCS_MAC_CATEGORY_CAPABILITY, |
100 |
[CCS_MAX_MAC_INDEX + CCS_CREATE_UNIX_SOCKET] |
101 |
= CCS_MAC_CATEGORY_CAPABILITY, |
102 |
[CCS_MAX_MAC_INDEX + CCS_SYS_LINK] |
103 |
= CCS_MAC_CATEGORY_CAPABILITY, |
104 |
[CCS_MAX_MAC_INDEX + CCS_SYS_SYMLINK] |
105 |
= CCS_MAC_CATEGORY_CAPABILITY, |
106 |
[CCS_MAX_MAC_INDEX + CCS_SYS_RENAME] |
107 |
= CCS_MAC_CATEGORY_CAPABILITY, |
108 |
[CCS_MAX_MAC_INDEX + CCS_SYS_UNLINK] |
109 |
= CCS_MAC_CATEGORY_CAPABILITY, |
110 |
[CCS_MAX_MAC_INDEX + CCS_SYS_CHMOD] |
111 |
= CCS_MAC_CATEGORY_CAPABILITY, |
112 |
[CCS_MAX_MAC_INDEX + CCS_SYS_CHOWN] |
113 |
= CCS_MAC_CATEGORY_CAPABILITY, |
114 |
[CCS_MAX_MAC_INDEX + CCS_SYS_IOCTL] |
115 |
= CCS_MAC_CATEGORY_CAPABILITY, |
116 |
[CCS_MAX_MAC_INDEX + CCS_SYS_KEXEC_LOAD] |
117 |
= CCS_MAC_CATEGORY_CAPABILITY, |
118 |
[CCS_MAX_MAC_INDEX + CCS_SYS_PIVOT_ROOT] |
119 |
= CCS_MAC_CATEGORY_CAPABILITY, |
120 |
[CCS_MAX_MAC_INDEX + CCS_SYS_PTRACE] |
121 |
= CCS_MAC_CATEGORY_CAPABILITY, |
122 |
[CCS_MAX_MAC_INDEX + CCS_CONCEAL_MOUNT] |
123 |
= CCS_MAC_CATEGORY_CAPABILITY, |
124 |
}; |
125 |
|
126 |
/* Utility functions. */ |
127 |
|
128 |
/** |
129 |
* ccs_parse_ulong - Parse an "unsigned long" value. |
130 |
* |
131 |
* @result: Pointer to "unsigned long". |
132 |
* @str: Pointer to string to parse. |
133 |
* |
134 |
* Returns value type on success, 0 otherwise. |
135 |
* |
136 |
* The @src is updated to point the first character after the value |
137 |
* on success. |
138 |
*/ |
139 |
u8 ccs_parse_ulong(unsigned long *result, char **str) |
140 |
{ |
141 |
const char *cp = *str; |
142 |
char *ep; |
143 |
int base = 10; |
144 |
if (*cp == '0') { |
145 |
char c = *(cp + 1); |
146 |
if (c == 'x' || c == 'X') { |
147 |
base = 16; |
148 |
cp += 2; |
149 |
} else if (c >= '0' && c <= '7') { |
150 |
base = 8; |
151 |
cp++; |
152 |
} |
153 |
} |
154 |
*result = simple_strtoul(cp, &ep, base); |
155 |
if (cp == ep) |
156 |
return 0; |
157 |
*str = ep; |
158 |
switch (base) { |
159 |
case 16: |
160 |
return CCS_VALUE_TYPE_HEXADECIMAL; |
161 |
case 8: |
162 |
return CCS_VALUE_TYPE_OCTAL; |
163 |
default: |
164 |
return CCS_VALUE_TYPE_DECIMAL; |
165 |
} |
166 |
} |
167 |
|
168 |
/** |
169 |
* ccs_print_ulong - Print an "unsigned long" value. |
170 |
* |
171 |
* @buffer: Pointer to buffer. |
172 |
* @buffer_len: Size of @buffer. |
173 |
* @value: An "unsigned long" value. |
174 |
* @type: Type of @value. |
175 |
* |
176 |
* Returns nothing. |
177 |
*/ |
178 |
void ccs_print_ulong(char *buffer, const int buffer_len, |
179 |
const unsigned long value, const u8 type) |
180 |
{ |
181 |
if (type == CCS_VALUE_TYPE_DECIMAL) |
182 |
snprintf(buffer, buffer_len, "%lu", value); |
183 |
else if (type == CCS_VALUE_TYPE_OCTAL) |
184 |
snprintf(buffer, buffer_len, "0%lo", value); |
185 |
else if (type == CCS_VALUE_TYPE_HEXADECIMAL) |
186 |
snprintf(buffer, buffer_len, "0x%lX", value); |
187 |
else |
188 |
snprintf(buffer, buffer_len, "type(%u)", type); |
189 |
} |
190 |
|
191 |
/** |
192 |
* ccs_parse_name_union - Parse a ccs_name_union. |
193 |
* |
194 |
* @filename: Name or name group. |
195 |
* @ptr: Pointer to "struct ccs_name_union". |
196 |
* |
197 |
* Returns true on success, false otherwise. |
198 |
*/ |
199 |
bool ccs_parse_name_union(const char *filename, struct ccs_name_union *ptr) |
200 |
{ |
201 |
if (!ccs_is_correct_path(filename, 0, 0, 0)) |
202 |
return false; |
203 |
if (filename[0] == '@') { |
204 |
ptr->group = ccs_get_path_group(filename + 1); |
205 |
ptr->is_group = true; |
206 |
return ptr->group != NULL; |
207 |
} |
208 |
ptr->filename = ccs_get_name(filename); |
209 |
ptr->is_group = false; |
210 |
return ptr->filename != NULL; |
211 |
} |
212 |
|
213 |
/** |
214 |
* ccs_parse_number_union - Parse a ccs_number_union. |
215 |
* |
216 |
* @data: Number or number range or number group. |
217 |
* @ptr: Pointer to "struct ccs_number_union". |
218 |
* |
219 |
* Returns true on success, false otherwise. |
220 |
*/ |
221 |
bool ccs_parse_number_union(char *data, struct ccs_number_union *num) |
222 |
{ |
223 |
u8 type; |
224 |
unsigned long v; |
225 |
memset(num, 0, sizeof(*num)); |
226 |
if (data[0] == '@') { |
227 |
if (!ccs_is_correct_path(data, 0, 0, 0)) |
228 |
return false; |
229 |
num->group = ccs_get_number_group(data + 1); |
230 |
num->is_group = true; |
231 |
return num->group != NULL; |
232 |
} |
233 |
type = ccs_parse_ulong(&v, &data); |
234 |
if (!type) |
235 |
return false; |
236 |
num->values[0] = v; |
237 |
num->min_type = type; |
238 |
if (!*data) { |
239 |
num->values[1] = v; |
240 |
num->max_type = type; |
241 |
return true; |
242 |
} |
243 |
if (*data++ != '-') |
244 |
return false; |
245 |
type = ccs_parse_ulong(&v, &data); |
246 |
if (!type || *data) |
247 |
return false; |
248 |
num->values[1] = v; |
249 |
num->max_type = type; |
250 |
return true; |
251 |
} |
252 |
|
253 |
/** |
254 |
* ccs_is_byte_range - Check whether the string isa \ooo style octal value. |
255 |
* |
256 |
* @str: Pointer to the string. |
257 |
* |
258 |
* Returns true if @str is a \ooo style octal value, false otherwise. |
259 |
*/ |
260 |
static inline bool ccs_is_byte_range(const char *str) |
261 |
{ |
262 |
return *str >= '0' && *str++ <= '3' && |
263 |
*str >= '0' && *str++ <= '7' && |
264 |
*str >= '0' && *str <= '7'; |
265 |
} |
266 |
|
267 |
/** |
268 |
* ccs_is_decimal - Check whether the character is a decimal character. |
269 |
* |
270 |
* @c: The character to check. |
271 |
* |
272 |
* Returns true if @c is a decimal character, false otherwise. |
273 |
*/ |
274 |
static inline bool ccs_is_decimal(const char c) |
275 |
{ |
276 |
return c >= '0' && c <= '9'; |
277 |
} |
278 |
|
279 |
/** |
280 |
* ccs_is_hexadecimal - Check whether the character is a hexadecimal character. |
281 |
* |
282 |
* @c: The character to check. |
283 |
* |
284 |
* Returns true if @c is a hexadecimal character, false otherwise. |
285 |
*/ |
286 |
static inline bool ccs_is_hexadecimal(const char c) |
287 |
{ |
288 |
return (c >= '0' && c <= '9') || |
289 |
(c >= 'A' && c <= 'F') || |
290 |
(c >= 'a' && c <= 'f'); |
291 |
} |
292 |
|
293 |
/** |
294 |
* ccs_is_alphabet_char - Check whether the character is an alphabet. |
295 |
* |
296 |
* @c: The character to check. |
297 |
* |
298 |
* Returns true if @c is an alphabet character, false otherwise. |
299 |
*/ |
300 |
static inline bool ccs_is_alphabet_char(const char c) |
301 |
{ |
302 |
return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'); |
303 |
} |
304 |
|
305 |
/** |
306 |
* ccs_make_byte - Make byte value from three octal characters. |
307 |
* |
308 |
* @c1: The first character. |
309 |
* @c2: The second character. |
310 |
* @c3: The third character. |
311 |
* |
312 |
* Returns byte value. |
313 |
*/ |
314 |
static inline u8 ccs_make_byte(const u8 c1, const u8 c2, const u8 c3) |
315 |
{ |
316 |
return ((c1 - '0') << 6) + ((c2 - '0') << 3) + (c3 - '0'); |
317 |
} |
318 |
|
319 |
/** |
320 |
* ccs_str_starts - Check whether the given string starts with the given keyword. |
321 |
* |
322 |
* @src: Pointer to pointer to the string. |
323 |
* @find: Pointer to the keyword. |
324 |
* |
325 |
* Returns true if @src starts with @find, false otherwise. |
326 |
* |
327 |
* The @src is updated to point the first character after the @find |
328 |
* if @src starts with @find. |
329 |
*/ |
330 |
bool ccs_str_starts(char **src, const char *find) |
331 |
{ |
332 |
const int len = strlen(find); |
333 |
char *tmp = *src; |
334 |
if (strncmp(tmp, find, len)) |
335 |
return false; |
336 |
tmp += len; |
337 |
*src = tmp; |
338 |
return true; |
339 |
} |
340 |
|
341 |
/** |
342 |
* ccs_normalize_line - Format string. |
343 |
* |
344 |
* @buffer: The line to normalize. |
345 |
* |
346 |
* Leading and trailing whitespaces are removed. |
347 |
* Multiple whitespaces are packed into single space. |
348 |
* |
349 |
* Returns nothing. |
350 |
*/ |
351 |
void ccs_normalize_line(unsigned char *buffer) |
352 |
{ |
353 |
unsigned char *sp = buffer; |
354 |
unsigned char *dp = buffer; |
355 |
bool first = true; |
356 |
while (*sp && (*sp <= ' ' || *sp >= 127)) |
357 |
sp++; |
358 |
while (*sp) { |
359 |
if (!first) |
360 |
*dp++ = ' '; |
361 |
first = false; |
362 |
while (*sp > ' ' && *sp < 127) |
363 |
*dp++ = *sp++; |
364 |
while (*sp && (*sp <= ' ' || *sp >= 127)) |
365 |
sp++; |
366 |
} |
367 |
*dp = '\0'; |
368 |
} |
369 |
|
370 |
/** |
371 |
* ccs_tokenize - Tokenize string. |
372 |
* |
373 |
* @buffer: The line to tokenize. |
374 |
* @w: Pointer to "char *". |
375 |
* @size: Sizeof @w . |
376 |
* |
377 |
* Returns true on success, false otherwise. |
378 |
*/ |
379 |
bool ccs_tokenize(char *buffer, char *w[], size_t size) |
380 |
{ |
381 |
int count = size / sizeof(char *); |
382 |
int i; |
383 |
for (i = 0; i < count; i++) |
384 |
w[i] = ""; |
385 |
for (i = 0; i < count; i++) { |
386 |
char *cp = strchr(buffer, ' '); |
387 |
if (cp) |
388 |
*cp = '\0'; |
389 |
w[i] = buffer; |
390 |
if (!cp) |
391 |
break; |
392 |
buffer = cp + 1; |
393 |
} |
394 |
return i < count || !*buffer; |
395 |
} |
396 |
|
397 |
/** |
398 |
* ccs_is_correct_path - Validate a pathname. |
399 |
* @filename: The pathname to check. |
400 |
* @start_type: Should the pathname start with '/'? |
401 |
* 1 = must / -1 = must not / 0 = don't care |
402 |
* @pattern_type: Can the pathname contain a wildcard? |
403 |
* 1 = must / -1 = must not / 0 = don't care |
404 |
* @end_type: Should the pathname end with '/'? |
405 |
* 1 = must / -1 = must not / 0 = don't care |
406 |
* |
407 |
* Check whether the given filename follows the naming rules. |
408 |
* Returns true if @filename follows the naming rules, false otherwise. |
409 |
*/ |
410 |
bool ccs_is_correct_path(const char *filename, const s8 start_type, |
411 |
const s8 pattern_type, const s8 end_type) |
412 |
{ |
413 |
bool contains_pattern = false; |
414 |
unsigned char c; |
415 |
unsigned char d; |
416 |
unsigned char e; |
417 |
if (!filename) |
418 |
goto out; |
419 |
c = *filename; |
420 |
if (start_type == 1) { /* Must start with '/' */ |
421 |
if (c != '/') |
422 |
goto out; |
423 |
} else if (start_type == -1) { /* Must not start with '/' */ |
424 |
if (c == '/') |
425 |
goto out; |
426 |
} |
427 |
if (c) |
428 |
c = *(filename + strlen(filename) - 1); |
429 |
if (end_type == 1) { /* Must end with '/' */ |
430 |
if (c != '/') |
431 |
goto out; |
432 |
} else if (end_type == -1) { /* Must not end with '/' */ |
433 |
if (c == '/') |
434 |
goto out; |
435 |
} |
436 |
while (1) { |
437 |
c = *filename++; |
438 |
if (!c) |
439 |
break; |
440 |
if (c == '\\') { |
441 |
c = *filename++; |
442 |
switch (c) { |
443 |
case '\\': /* "\\" */ |
444 |
continue; |
445 |
case '$': /* "\$" */ |
446 |
case '+': /* "\+" */ |
447 |
case '?': /* "\?" */ |
448 |
case '*': /* "\*" */ |
449 |
case '@': /* "\@" */ |
450 |
case 'x': /* "\x" */ |
451 |
case 'X': /* "\X" */ |
452 |
case 'a': /* "\a" */ |
453 |
case 'A': /* "\A" */ |
454 |
case '-': /* "\-" */ |
455 |
if (pattern_type == -1) |
456 |
break; /* Must not contain pattern */ |
457 |
contains_pattern = true; |
458 |
continue; |
459 |
case '0': /* "\ooo" */ |
460 |
case '1': |
461 |
case '2': |
462 |
case '3': |
463 |
d = *filename++; |
464 |
if (d < '0' || d > '7') |
465 |
break; |
466 |
e = *filename++; |
467 |
if (e < '0' || e > '7') |
468 |
break; |
469 |
c = ccs_make_byte(c, d, e); |
470 |
if (c && (c <= ' ' || c >= 127)) |
471 |
continue; /* pattern is not \000 */ |
472 |
} |
473 |
goto out; |
474 |
} else if (c <= ' ' || c >= 127) { |
475 |
goto out; |
476 |
} |
477 |
} |
478 |
if (pattern_type == 1) { /* Must contain pattern */ |
479 |
if (!contains_pattern) |
480 |
goto out; |
481 |
} |
482 |
return true; |
483 |
out: |
484 |
return false; |
485 |
} |
486 |
|
487 |
/** |
488 |
* ccs_is_correct_domain - Check whether the given domainname follows the naming rules. |
489 |
* @domainname: The domainname to check. |
490 |
* |
491 |
* Returns true if @domainname follows the naming rules, false otherwise. |
492 |
*/ |
493 |
bool ccs_is_correct_domain(const unsigned char *domainname) |
494 |
{ |
495 |
unsigned char c; |
496 |
unsigned char d; |
497 |
unsigned char e; |
498 |
if (!domainname || strncmp(domainname, ROOT_NAME, ROOT_NAME_LEN)) |
499 |
goto out; |
500 |
domainname += ROOT_NAME_LEN; |
501 |
if (!*domainname) |
502 |
return true; |
503 |
do { |
504 |
if (*domainname++ != ' ') |
505 |
goto out; |
506 |
if (*domainname++ != '/') |
507 |
goto out; |
508 |
while (1) { |
509 |
c = *domainname; |
510 |
if (!c || c == ' ') |
511 |
break; |
512 |
domainname++; |
513 |
if (c == '\\') { |
514 |
c = *domainname++; |
515 |
switch ((c)) { |
516 |
case '\\': /* "\\" */ |
517 |
continue; |
518 |
case '0': /* "\ooo" */ |
519 |
case '1': |
520 |
case '2': |
521 |
case '3': |
522 |
d = *domainname++; |
523 |
if (d < '0' || d > '7') |
524 |
break; |
525 |
e = *domainname++; |
526 |
if (e < '0' || e > '7') |
527 |
break; |
528 |
c = ccs_make_byte(c, d, e); |
529 |
if (c && (c <= ' ' || c >= 127)) |
530 |
/* pattern is not \000 */ |
531 |
continue; |
532 |
} |
533 |
goto out; |
534 |
} else if (c < ' ' || c >= 127) { |
535 |
goto out; |
536 |
} |
537 |
} |
538 |
} while (*domainname); |
539 |
return true; |
540 |
out: |
541 |
return false; |
542 |
} |
543 |
|
544 |
/** |
545 |
* ccs_is_domain_def - Check whether the given token can be a domainname. |
546 |
* |
547 |
* @buffer: The token to check. |
548 |
* |
549 |
* Returns true if @buffer possibly be a domainname, false otherwise. |
550 |
*/ |
551 |
bool ccs_is_domain_def(const unsigned char *buffer) |
552 |
{ |
553 |
return !strncmp(buffer, ROOT_NAME, ROOT_NAME_LEN); |
554 |
} |
555 |
|
556 |
/** |
557 |
* ccs_find_domain - Find a domain by the given name. |
558 |
* |
559 |
* @domainname: The domainname to find. |
560 |
* |
561 |
* Returns pointer to "struct ccs_domain_info" if found, NULL otherwise. |
562 |
* |
563 |
* Caller holds ccs_read_lock(). |
564 |
*/ |
565 |
struct ccs_domain_info *ccs_find_domain(const char *domainname) |
566 |
{ |
567 |
struct ccs_domain_info *domain; |
568 |
struct ccs_path_info name; |
569 |
name.name = domainname; |
570 |
ccs_fill_path_info(&name); |
571 |
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
572 |
if (!domain->is_deleted && |
573 |
!ccs_pathcmp(&name, domain->domainname)) |
574 |
return domain; |
575 |
} |
576 |
return NULL; |
577 |
} |
578 |
|
579 |
/** |
580 |
* ccs_path_depth - Evaluate the number of '/' in a string. |
581 |
* |
582 |
* @pathname: The string to evaluate. |
583 |
* |
584 |
* Returns path depth of the string. |
585 |
* |
586 |
* I score 2 for each of the '/' in the @pathname |
587 |
* and score 1 if the @pathname ends with '/'. |
588 |
*/ |
589 |
static int ccs_path_depth(const char *pathname) |
590 |
{ |
591 |
int i = 0; |
592 |
if (pathname) { |
593 |
const char *ep = pathname + strlen(pathname); |
594 |
if (pathname < ep--) { |
595 |
if (*ep != '/') |
596 |
i++; |
597 |
while (pathname <= ep) |
598 |
if (*ep-- == '/') |
599 |
i += 2; |
600 |
} |
601 |
} |
602 |
return i; |
603 |
} |
604 |
|
605 |
/** |
606 |
* ccs_const_part_length - Evaluate the initial length without a pattern in a token. |
607 |
* |
608 |
* @filename: The string to evaluate. |
609 |
* |
610 |
* Returns the initial length without a pattern in @filename. |
611 |
*/ |
612 |
static int ccs_const_part_length(const char *filename) |
613 |
{ |
614 |
char c; |
615 |
int len = 0; |
616 |
if (!filename) |
617 |
return 0; |
618 |
while (1) { |
619 |
c = *filename++; |
620 |
if (!c) |
621 |
break; |
622 |
if (c != '\\') { |
623 |
len++; |
624 |
continue; |
625 |
} |
626 |
c = *filename++; |
627 |
switch (c) { |
628 |
case '\\': /* "\\" */ |
629 |
len += 2; |
630 |
continue; |
631 |
case '0': /* "\ooo" */ |
632 |
case '1': |
633 |
case '2': |
634 |
case '3': |
635 |
c = *filename++; |
636 |
if (c < '0' || c > '7') |
637 |
break; |
638 |
c = *filename++; |
639 |
if (c < '0' || c > '7') |
640 |
break; |
641 |
len += 4; |
642 |
continue; |
643 |
} |
644 |
break; |
645 |
} |
646 |
return len; |
647 |
} |
648 |
|
649 |
/** |
650 |
* ccs_fill_path_info - Fill in "struct ccs_path_info" members. |
651 |
* |
652 |
* @ptr: Pointer to "struct ccs_path_info" to fill in. |
653 |
* |
654 |
* The caller sets "struct ccs_path_info"->name. |
655 |
*/ |
656 |
void ccs_fill_path_info(struct ccs_path_info *ptr) |
657 |
{ |
658 |
const char *name = ptr->name; |
659 |
const int len = strlen(name); |
660 |
ptr->total_len = len; |
661 |
ptr->const_len = ccs_const_part_length(name); |
662 |
ptr->is_dir = len && (name[len - 1] == '/'); |
663 |
ptr->is_patterned = (ptr->const_len < len); |
664 |
ptr->hash = full_name_hash(name, len); |
665 |
ptr->depth = ccs_path_depth(name); |
666 |
} |
667 |
|
668 |
/** |
669 |
* ccs_file_matches_pattern2 - Pattern matching without '/' character |
670 |
* and "\-" pattern. |
671 |
* |
672 |
* @filename: The start of string to check. |
673 |
* @filename_end: The end of string to check. |
674 |
* @pattern: The start of pattern to compare. |
675 |
* @pattern_end: The end of pattern to compare. |
676 |
* |
677 |
* Returns true if @filename matches @pattern, false otherwise. |
678 |
*/ |
679 |
static bool ccs_file_matches_pattern2(const char *filename, |
680 |
const char *filename_end, |
681 |
const char *pattern, |
682 |
const char *pattern_end) |
683 |
{ |
684 |
while (filename < filename_end && pattern < pattern_end) { |
685 |
char c; |
686 |
if (*pattern != '\\') { |
687 |
if (*filename++ != *pattern++) |
688 |
return false; |
689 |
continue; |
690 |
} |
691 |
c = *filename; |
692 |
pattern++; |
693 |
switch (*pattern) { |
694 |
int i; |
695 |
int j; |
696 |
case '?': |
697 |
if (c == '/') { |
698 |
return false; |
699 |
} else if (c == '\\') { |
700 |
if (filename[1] == '\\') |
701 |
filename++; |
702 |
else if (ccs_is_byte_range(filename + 1)) |
703 |
filename += 3; |
704 |
else |
705 |
return false; |
706 |
} |
707 |
break; |
708 |
case '\\': |
709 |
if (c != '\\') |
710 |
return false; |
711 |
if (*++filename != '\\') |
712 |
return false; |
713 |
break; |
714 |
case '+': |
715 |
if (!ccs_is_decimal(c)) |
716 |
return false; |
717 |
break; |
718 |
case 'x': |
719 |
if (!ccs_is_hexadecimal(c)) |
720 |
return false; |
721 |
break; |
722 |
case 'a': |
723 |
if (!ccs_is_alphabet_char(c)) |
724 |
return false; |
725 |
break; |
726 |
case '0': |
727 |
case '1': |
728 |
case '2': |
729 |
case '3': |
730 |
if (c == '\\' && ccs_is_byte_range(filename + 1) |
731 |
&& strncmp(filename + 1, pattern, 3) == 0) { |
732 |
filename += 3; |
733 |
pattern += 2; |
734 |
break; |
735 |
} |
736 |
return false; /* Not matched. */ |
737 |
case '*': |
738 |
case '@': |
739 |
for (i = 0; i <= filename_end - filename; i++) { |
740 |
if (ccs_file_matches_pattern2(filename + i, |
741 |
filename_end, |
742 |
pattern + 1, |
743 |
pattern_end)) |
744 |
return true; |
745 |
c = filename[i]; |
746 |
if (c == '.' && *pattern == '@') |
747 |
break; |
748 |
if (c != '\\') |
749 |
continue; |
750 |
if (filename[i + 1] == '\\') |
751 |
i++; |
752 |
else if (ccs_is_byte_range(filename + i + 1)) |
753 |
i += 3; |
754 |
else |
755 |
break; /* Bad pattern. */ |
756 |
} |
757 |
return false; /* Not matched. */ |
758 |
default: |
759 |
j = 0; |
760 |
c = *pattern; |
761 |
if (c == '$') { |
762 |
while (ccs_is_decimal(filename[j])) |
763 |
j++; |
764 |
} else if (c == 'X') { |
765 |
while (ccs_is_hexadecimal(filename[j])) |
766 |
j++; |
767 |
} else if (c == 'A') { |
768 |
while (ccs_is_alphabet_char(filename[j])) |
769 |
j++; |
770 |
} |
771 |
for (i = 1; i <= j; i++) { |
772 |
if (ccs_file_matches_pattern2(filename + i, |
773 |
filename_end, |
774 |
pattern + 1, |
775 |
pattern_end)) |
776 |
return true; |
777 |
} |
778 |
return false; /* Not matched or bad pattern. */ |
779 |
} |
780 |
filename++; |
781 |
pattern++; |
782 |
} |
783 |
while (*pattern == '\\' && |
784 |
(*(pattern + 1) == '*' || *(pattern + 1) == '@')) |
785 |
pattern += 2; |
786 |
return filename == filename_end && pattern == pattern_end; |
787 |
} |
788 |
|
789 |
/** |
790 |
* ccs_file_matches_pattern - Pattern matching without without '/' character. |
791 |
* |
792 |
* @filename: The start of string to check. |
793 |
* @filename_end: The end of string to check. |
794 |
* @pattern: The start of pattern to compare. |
795 |
* @pattern_end: The end of pattern to compare. |
796 |
* |
797 |
* Returns true if @filename matches @pattern, false otherwise. |
798 |
*/ |
799 |
static bool ccs_file_matches_pattern(const char *filename, |
800 |
const char *filename_end, |
801 |
const char *pattern, |
802 |
const char *pattern_end) |
803 |
{ |
804 |
const char *pattern_start = pattern; |
805 |
bool first = true; |
806 |
bool result; |
807 |
while (pattern < pattern_end - 1) { |
808 |
/* Split at "\-" pattern. */ |
809 |
if (*pattern++ != '\\' || *pattern++ != '-') |
810 |
continue; |
811 |
result = ccs_file_matches_pattern2(filename, filename_end, |
812 |
pattern_start, pattern - 2); |
813 |
if (first) |
814 |
result = !result; |
815 |
if (result) |
816 |
return false; |
817 |
first = false; |
818 |
pattern_start = pattern; |
819 |
} |
820 |
result = ccs_file_matches_pattern2(filename, filename_end, |
821 |
pattern_start, pattern_end); |
822 |
return first ? result : !result; |
823 |
} |
824 |
|
825 |
/** |
826 |
* ccs_path_matches_pattern - Check whether the given filename matches the given pattern. |
827 |
* @filename: The filename to check. |
828 |
* @pattern: The pattern to compare. |
829 |
* |
830 |
* Returns true if matches, false otherwise. |
831 |
* |
832 |
* The following patterns are available. |
833 |
* \\ \ itself. |
834 |
* \ooo Octal representation of a byte. |
835 |
* \* More than or equals to 0 character other than '/'. |
836 |
* \@ More than or equals to 0 character other than '/' or '.'. |
837 |
* \? 1 byte character other than '/'. |
838 |
* \$ More than or equals to 1 decimal digit. |
839 |
* \+ 1 decimal digit. |
840 |
* \X More than or equals to 1 hexadecimal digit. |
841 |
* \x 1 hexadecimal digit. |
842 |
* \A More than or equals to 1 alphabet character. |
843 |
* \a 1 alphabet character. |
844 |
* \- Subtraction operator. |
845 |
*/ |
846 |
bool ccs_path_matches_pattern(const struct ccs_path_info *filename, |
847 |
const struct ccs_path_info *pattern) |
848 |
{ |
849 |
/* |
850 |
if (!filename || !pattern) |
851 |
return false; |
852 |
*/ |
853 |
const char *f = filename->name; |
854 |
const char *p = pattern->name; |
855 |
const int len = pattern->const_len; |
856 |
/* If @pattern doesn't contain pattern, I can use strcmp(). */ |
857 |
if (!pattern->is_patterned) |
858 |
return !ccs_pathcmp(filename, pattern); |
859 |
/* Don't compare if the number of '/' differs. */ |
860 |
if (filename->depth != pattern->depth) |
861 |
return false; |
862 |
/* Compare the initial length without patterns. */ |
863 |
if (strncmp(f, p, len)) |
864 |
return false; |
865 |
f += len; |
866 |
p += len; |
867 |
/* Main loop. Compare each directory component. */ |
868 |
while (*f && *p) { |
869 |
const char *f_delimiter = strchr(f, '/'); |
870 |
const char *p_delimiter = strchr(p, '/'); |
871 |
if (!f_delimiter) |
872 |
f_delimiter = f + strlen(f); |
873 |
if (!p_delimiter) |
874 |
p_delimiter = p + strlen(p); |
875 |
if (!ccs_file_matches_pattern(f, f_delimiter, p, p_delimiter)) |
876 |
return false; |
877 |
f = f_delimiter; |
878 |
if (*f) |
879 |
f++; |
880 |
p = p_delimiter; |
881 |
if (*p) |
882 |
p++; |
883 |
} |
884 |
/* Ignore trailing "\*" and "\@" in @pattern. */ |
885 |
while (*p == '\\' && |
886 |
(*(p + 1) == '*' || *(p + 1) == '@')) |
887 |
p += 2; |
888 |
return !*f && !*p; |
889 |
} |
890 |
|
891 |
/** |
892 |
* ccs_get_exe - Get ccs_realpath() of current process. |
893 |
* |
894 |
* Returns the ccs_realpath() of current process on success, NULL otherwise. |
895 |
* |
896 |
* This function uses kzalloc(), so the caller must kfree() |
897 |
* if this function didn't return NULL. |
898 |
*/ |
899 |
const char *ccs_get_exe(void) |
900 |
{ |
901 |
struct mm_struct *mm = current->mm; |
902 |
struct vm_area_struct *vma; |
903 |
const char *cp = NULL; |
904 |
if (!mm) |
905 |
return NULL; |
906 |
down_read(&mm->mmap_sem); |
907 |
for (vma = mm->mmap; vma; vma = vma->vm_next) { |
908 |
if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) { |
909 |
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20) |
910 |
struct path path = { vma->vm_file->f_vfsmnt, |
911 |
vma->vm_file->f_dentry }; |
912 |
cp = ccs_realpath_from_path(&path); |
913 |
#else |
914 |
cp = ccs_realpath_from_path(&vma->vm_file->f_path); |
915 |
#endif |
916 |
break; |
917 |
} |
918 |
} |
919 |
up_read(&mm->mmap_sem); |
920 |
return cp; |
921 |
} |
922 |
|
923 |
/** |
924 |
* ccs_flags - Check mode for specified functionality. |
925 |
* |
926 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
927 |
* @index: The functionality to check mode. |
928 |
* |
929 |
* Returns the mode of specified functionality. |
930 |
*/ |
931 |
unsigned int ccs_flags(const struct ccs_domain_info *domain, |
932 |
const u8 index) |
933 |
{ |
934 |
u8 profile; |
935 |
if (!domain) |
936 |
domain = ccs_current_domain(); |
937 |
profile = domain->profile; |
938 |
return ccs_policy_loaded && index < CCS_MAX_CONTROL_INDEX |
939 |
#if CCS_MAX_PROFILES != 256 |
940 |
&& profile < CCS_MAX_PROFILES |
941 |
#endif |
942 |
&& ccs_profile_ptr[profile] ? |
943 |
ccs_profile_ptr[profile]->value[index] : 0; |
944 |
} |
945 |
|
946 |
/** |
947 |
* ccs_get_audit - Get audit mode. |
948 |
* |
949 |
* @profile: Profile number. |
950 |
* @index: Index number of functionality. |
951 |
* @is_granted: True if granted log, false otehrwise. |
952 |
* |
953 |
* Returns mode. |
954 |
*/ |
955 |
bool ccs_get_audit(const u8 profile, const u8 index, const bool is_granted) |
956 |
{ |
957 |
u8 mode; |
958 |
const u8 category = ccs_index2category[index] + CCS_MAX_MAC_INDEX |
959 |
+ CCS_MAX_CAPABILITY_INDEX; |
960 |
if (!ccs_policy_loaded || !ccs_profile_ptr[profile]) |
961 |
return false; |
962 |
mode = ccs_profile_ptr[profile]->config[index]; |
963 |
if (mode == CCS_MAC_MODE_USE_DEFAULT) |
964 |
mode = ccs_profile_ptr[profile]->config[category]; |
965 |
if (mode == CCS_MAC_MODE_USE_DEFAULT) |
966 |
mode = ccs_profile_ptr[profile]->default_config; |
967 |
if (is_granted) |
968 |
return !(mode & CCS_MAC_MODE_NO_GRANT_LOG); |
969 |
return !(mode & CCS_MAC_MODE_NO_REJECT_LOG); |
970 |
} |
971 |
|
972 |
/** |
973 |
* ccs_get_mode - Get MAC mode. |
974 |
* |
975 |
* @profile: Profile number. |
976 |
* @index: Index number of functionality. |
977 |
* |
978 |
* Returns mode. |
979 |
*/ |
980 |
int ccs_get_mode(const u8 profile, const u8 index) |
981 |
{ |
982 |
u8 mode; |
983 |
const u8 category = ccs_index2category[index] + CCS_MAX_MAC_INDEX |
984 |
+ CCS_MAX_CAPABILITY_INDEX; |
985 |
if (!ccs_policy_loaded || !ccs_profile_ptr[profile]) |
986 |
return CCS_MAC_MODE_DISABLED; |
987 |
mode = ccs_profile_ptr[profile]->config[index]; |
988 |
if (mode == CCS_MAC_MODE_USE_DEFAULT) |
989 |
mode = ccs_profile_ptr[profile]->config[category]; |
990 |
if (mode == CCS_MAC_MODE_USE_DEFAULT) |
991 |
mode = ccs_profile_ptr[profile]->default_config; |
992 |
return mode & 3; |
993 |
} |
994 |
|
995 |
/** |
996 |
* ccs_init_request_info - Initialize "struct ccs_request_info" members. |
997 |
* |
998 |
* @r: Pointer to "struct ccs_request_info" to initialize. |
999 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
1000 |
* @index: Index number of functionality. |
1001 |
* |
1002 |
* Returns mode. |
1003 |
*/ |
1004 |
int ccs_init_request_info(struct ccs_request_info *r, |
1005 |
struct ccs_domain_info *domain, const u8 index) |
1006 |
{ |
1007 |
u8 profile; |
1008 |
memset(r, 0, sizeof(*r)); |
1009 |
if (!domain) |
1010 |
domain = ccs_current_domain(); |
1011 |
r->domain = domain; |
1012 |
profile = domain->profile; |
1013 |
r->profile = profile; |
1014 |
r->type = index; |
1015 |
r->mode = ccs_get_mode(profile, index); |
1016 |
return r->mode; |
1017 |
} |
1018 |
|
1019 |
/** |
1020 |
* ccs_last_word - Get last component of a line. |
1021 |
* |
1022 |
* @line: A line. |
1023 |
* |
1024 |
* Returns the last word of a line. |
1025 |
*/ |
1026 |
const char *ccs_last_word(const char *name) |
1027 |
{ |
1028 |
const char *cp = strrchr(name, ' '); |
1029 |
if (cp) |
1030 |
return cp + 1; |
1031 |
return name; |
1032 |
} |
1033 |
|
1034 |
/** |
1035 |
* ccs_warn_log - Print warning or error message on console. |
1036 |
* |
1037 |
* @r: Pointer to "struct ccs_request_info". |
1038 |
* @fmt: The printf()'s format string, followed by parameters. |
1039 |
*/ |
1040 |
void ccs_warn_log(struct ccs_request_info *r, const char *fmt, ...) |
1041 |
{ |
1042 |
int len = PAGE_SIZE; |
1043 |
va_list args; |
1044 |
char *buffer; |
1045 |
if (!ccs_flags(r->domain, CCS_VERBOSE)) |
1046 |
return; |
1047 |
while (1) { |
1048 |
int len2; |
1049 |
buffer = kmalloc(len, GFP_KERNEL); |
1050 |
if (!buffer) |
1051 |
return; |
1052 |
va_start(args, fmt); |
1053 |
len2 = vsnprintf(buffer, len - 1, fmt, args); |
1054 |
va_end(args); |
1055 |
if (len2 < len - 1) { |
1056 |
buffer[len2] = '\0'; |
1057 |
break; |
1058 |
} |
1059 |
len = len2 + 1; |
1060 |
kfree(buffer); |
1061 |
} |
1062 |
printk(KERN_WARNING "%s: Access %s denied for %s\n", |
1063 |
r->mode == CCS_MAC_MODE_ENFORCING ? "ERROR" : "WARNING", buffer, |
1064 |
ccs_last_word(r->domain->domainname->name)); |
1065 |
kfree(buffer); |
1066 |
} |
1067 |
|
1068 |
/** |
1069 |
* ccs_domain_quota_ok - Check for domain's quota. |
1070 |
* |
1071 |
* @r: Pointer to "struct ccs_request_info". |
1072 |
* |
1073 |
* Returns true if the domain is not exceeded quota, false otherwise. |
1074 |
* |
1075 |
* Caller holds ccs_read_lock(). |
1076 |
*/ |
1077 |
bool ccs_domain_quota_ok(struct ccs_request_info *r) |
1078 |
{ |
1079 |
unsigned int count = 0; |
1080 |
struct ccs_domain_info *domain = r->domain; |
1081 |
struct ccs_acl_info *ptr; |
1082 |
if (r->mode != 1) |
1083 |
return false; |
1084 |
if (!domain) |
1085 |
return true; |
1086 |
list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) { |
1087 |
if (ptr->is_deleted) |
1088 |
continue; |
1089 |
switch (ptr->type) { |
1090 |
u16 perm; |
1091 |
u8 i; |
1092 |
case CCS_TYPE_PATH_ACL: |
1093 |
perm = container_of(ptr, struct ccs_path_acl, head)-> |
1094 |
perm; |
1095 |
for (i = 0; i < CCS_MAX_PATH_OPERATION; i++) |
1096 |
if (perm & (1 << i)) |
1097 |
count++; |
1098 |
if (perm & (1 << CCS_TYPE_READ_WRITE)) |
1099 |
count -= 2; |
1100 |
break; |
1101 |
case CCS_TYPE_PATH2_ACL: |
1102 |
perm = container_of(ptr, struct ccs_path2_acl, |
1103 |
head)->perm; |
1104 |
for (i = 0; i < CCS_MAX_PATH2_OPERATION; i++) |
1105 |
if (perm & (1 << i)) |
1106 |
count++; |
1107 |
break; |
1108 |
case CCS_TYPE_EXECUTE_HANDLER: |
1109 |
case CCS_TYPE_DENIED_EXECUTE_HANDLER: |
1110 |
break; |
1111 |
case CCS_TYPE_PATH_NUMBER_ACL: |
1112 |
perm = container_of(ptr, struct ccs_path_number_acl, |
1113 |
head)->perm; |
1114 |
for (i = 0; i < CCS_MAX_PATH_NUMBER_OPERATION; i++) |
1115 |
if (perm & (1 << i)) |
1116 |
count++; |
1117 |
break; |
1118 |
case CCS_TYPE_PATH_NUMBER3_ACL: |
1119 |
perm = container_of(ptr, |
1120 |
struct ccs_path_number3_acl, |
1121 |
head)->perm; |
1122 |
for (i = 0; i < CCS_MAX_PATH_NUMBER3_OPERATION; |
1123 |
i++) |
1124 |
if (perm & (1 << i)) |
1125 |
count++; |
1126 |
break; |
1127 |
case CCS_TYPE_IP_NETWORK_ACL: |
1128 |
perm = container_of(ptr, struct ccs_ip_network_acl, |
1129 |
head)->perm; |
1130 |
for (i = 0; i < CCS_MAX_NETWORK_OPERATION; i++) |
1131 |
if (perm & (1 << i)) |
1132 |
count++; |
1133 |
break; |
1134 |
default: |
1135 |
count++; |
1136 |
} |
1137 |
} |
1138 |
if (count < ccs_flags(domain, CCS_MAX_ACCEPT_ENTRY)) |
1139 |
return true; |
1140 |
if (!domain->quota_warned) { |
1141 |
domain->quota_warned = true; |
1142 |
printk(KERN_WARNING "WARNING: " |
1143 |
"Domain '%s' has so many ACLs to hold. " |
1144 |
"Stopped learning mode.\n", domain->domainname->name); |
1145 |
} |
1146 |
return false; |
1147 |
} |