1 |
/* |
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* security/ccsecurity/util.c |
3 |
* |
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* Copyright (C) 2005-2009 NTT DATA CORPORATION |
5 |
* |
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* Version: 1.7.0 2009/10/01 |
7 |
* |
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* This file is applicable to both 2.4.30 and 2.6.11 and later. |
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* See README.ccs for ChangeLog. |
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* |
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*/ |
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|
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#include "internal.h" |
14 |
|
15 |
/* Lock for protecting policy. */ |
16 |
DEFINE_MUTEX(ccs_policy_lock); |
17 |
|
18 |
/* Has /sbin/init started? */ |
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bool ccs_policy_loaded; |
20 |
|
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/* Index table for searching parent category. */ |
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static const u8 ccs_index2category[CCS_MAX_MAC_INDEX + |
23 |
CCS_MAX_CAPABILITY_INDEX] = { |
24 |
[CCS_MAC_FILE_EXECUTE] = CCS_MAC_CATEGORY_FILE, |
25 |
[CCS_MAC_FILE_OPEN] = CCS_MAC_CATEGORY_FILE, |
26 |
[CCS_MAC_FILE_CREATE] = CCS_MAC_CATEGORY_FILE, |
27 |
[CCS_MAC_FILE_UNLINK] = CCS_MAC_CATEGORY_FILE, |
28 |
[CCS_MAC_FILE_MKDIR] = CCS_MAC_CATEGORY_FILE, |
29 |
[CCS_MAC_FILE_RMDIR] = CCS_MAC_CATEGORY_FILE, |
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[CCS_MAC_FILE_MKFIFO] = CCS_MAC_CATEGORY_FILE, |
31 |
[CCS_MAC_FILE_MKSOCK] = CCS_MAC_CATEGORY_FILE, |
32 |
[CCS_MAC_FILE_TRUNCATE] = CCS_MAC_CATEGORY_FILE, |
33 |
[CCS_MAC_FILE_SYMLINK] = CCS_MAC_CATEGORY_FILE, |
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[CCS_MAC_FILE_REWRITE] = CCS_MAC_CATEGORY_FILE, |
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[CCS_MAC_FILE_MKBLOCK] = CCS_MAC_CATEGORY_FILE, |
36 |
[CCS_MAC_FILE_MKCHAR] = CCS_MAC_CATEGORY_FILE, |
37 |
[CCS_MAC_FILE_LINK] = CCS_MAC_CATEGORY_FILE, |
38 |
[CCS_MAC_FILE_RENAME] = CCS_MAC_CATEGORY_FILE, |
39 |
[CCS_MAC_FILE_CHMOD] = CCS_MAC_CATEGORY_FILE, |
40 |
[CCS_MAC_FILE_CHOWN] = CCS_MAC_CATEGORY_FILE, |
41 |
[CCS_MAC_FILE_CHGRP] = CCS_MAC_CATEGORY_FILE, |
42 |
[CCS_MAC_FILE_IOCTL] = CCS_MAC_CATEGORY_FILE, |
43 |
[CCS_MAC_FILE_CHROOT] = CCS_MAC_CATEGORY_FILE, |
44 |
[CCS_MAC_FILE_MOUNT] = CCS_MAC_CATEGORY_FILE, |
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[CCS_MAC_FILE_UMOUNT] = CCS_MAC_CATEGORY_FILE, |
46 |
[CCS_MAC_FILE_PIVOT_ROOT] = CCS_MAC_CATEGORY_FILE, |
47 |
[CCS_MAC_ENVIRON] = CCS_MAC_CATEGORY_MISC, |
48 |
[CCS_MAC_NETWORK_UDP_BIND] = CCS_MAC_CATEGORY_NETWORK, |
49 |
[CCS_MAC_NETWORK_UDP_CONNECT] = CCS_MAC_CATEGORY_NETWORK, |
50 |
[CCS_MAC_NETWORK_TCP_BIND] = CCS_MAC_CATEGORY_NETWORK, |
51 |
[CCS_MAC_NETWORK_TCP_LISTEN] = CCS_MAC_CATEGORY_NETWORK, |
52 |
[CCS_MAC_NETWORK_TCP_CONNECT] = CCS_MAC_CATEGORY_NETWORK, |
53 |
[CCS_MAC_NETWORK_TCP_ACCEPT] = CCS_MAC_CATEGORY_NETWORK, |
54 |
[CCS_MAC_NETWORK_RAW_BIND] = CCS_MAC_CATEGORY_NETWORK, |
55 |
[CCS_MAC_NETWORK_RAW_CONNECT] = CCS_MAC_CATEGORY_NETWORK, |
56 |
[CCS_MAC_SIGNAL] = CCS_MAC_CATEGORY_IPC, |
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[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CREATE] |
58 |
= CCS_MAC_CATEGORY_CAPABILITY, |
59 |
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_LISTEN] |
60 |
= CCS_MAC_CATEGORY_CAPABILITY, |
61 |
[CCS_MAX_MAC_INDEX + CCS_INET_STREAM_SOCKET_CONNECT] |
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= CCS_MAC_CATEGORY_CAPABILITY, |
63 |
[CCS_MAX_MAC_INDEX + CCS_USE_INET_DGRAM_SOCKET] |
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= CCS_MAC_CATEGORY_CAPABILITY, |
65 |
[CCS_MAX_MAC_INDEX + CCS_USE_INET_RAW_SOCKET] |
66 |
= CCS_MAC_CATEGORY_CAPABILITY, |
67 |
[CCS_MAX_MAC_INDEX + CCS_USE_ROUTE_SOCKET] |
68 |
= CCS_MAC_CATEGORY_CAPABILITY, |
69 |
[CCS_MAX_MAC_INDEX + CCS_USE_PACKET_SOCKET] |
70 |
= CCS_MAC_CATEGORY_CAPABILITY, |
71 |
[CCS_MAX_MAC_INDEX + CCS_SYS_MOUNT] |
72 |
= CCS_MAC_CATEGORY_CAPABILITY, |
73 |
[CCS_MAX_MAC_INDEX + CCS_SYS_UMOUNT] |
74 |
= CCS_MAC_CATEGORY_CAPABILITY, |
75 |
[CCS_MAX_MAC_INDEX + CCS_SYS_REBOOT] |
76 |
= CCS_MAC_CATEGORY_CAPABILITY, |
77 |
[CCS_MAX_MAC_INDEX + CCS_SYS_CHROOT] |
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= CCS_MAC_CATEGORY_CAPABILITY, |
79 |
[CCS_MAX_MAC_INDEX + CCS_SYS_KILL] |
80 |
= CCS_MAC_CATEGORY_CAPABILITY, |
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[CCS_MAX_MAC_INDEX + CCS_SYS_VHANGUP] |
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= CCS_MAC_CATEGORY_CAPABILITY, |
83 |
[CCS_MAX_MAC_INDEX + CCS_SYS_SETTIME] |
84 |
= CCS_MAC_CATEGORY_CAPABILITY, |
85 |
[CCS_MAX_MAC_INDEX + CCS_SYS_NICE] |
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= CCS_MAC_CATEGORY_CAPABILITY, |
87 |
[CCS_MAX_MAC_INDEX + CCS_SYS_SETHOSTNAME] |
88 |
= CCS_MAC_CATEGORY_CAPABILITY, |
89 |
[CCS_MAX_MAC_INDEX + CCS_USE_KERNEL_MODULE] |
90 |
= CCS_MAC_CATEGORY_CAPABILITY, |
91 |
[CCS_MAX_MAC_INDEX + CCS_CREATE_FIFO] |
92 |
= CCS_MAC_CATEGORY_CAPABILITY, |
93 |
[CCS_MAX_MAC_INDEX + CCS_CREATE_BLOCK_DEV] |
94 |
= CCS_MAC_CATEGORY_CAPABILITY, |
95 |
[CCS_MAX_MAC_INDEX + CCS_CREATE_CHAR_DEV] |
96 |
= CCS_MAC_CATEGORY_CAPABILITY, |
97 |
[CCS_MAX_MAC_INDEX + CCS_CREATE_UNIX_SOCKET] |
98 |
= CCS_MAC_CATEGORY_CAPABILITY, |
99 |
[CCS_MAX_MAC_INDEX + CCS_SYS_LINK] |
100 |
= CCS_MAC_CATEGORY_CAPABILITY, |
101 |
[CCS_MAX_MAC_INDEX + CCS_SYS_SYMLINK] |
102 |
= CCS_MAC_CATEGORY_CAPABILITY, |
103 |
[CCS_MAX_MAC_INDEX + CCS_SYS_RENAME] |
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= CCS_MAC_CATEGORY_CAPABILITY, |
105 |
[CCS_MAX_MAC_INDEX + CCS_SYS_UNLINK] |
106 |
= CCS_MAC_CATEGORY_CAPABILITY, |
107 |
[CCS_MAX_MAC_INDEX + CCS_SYS_CHMOD] |
108 |
= CCS_MAC_CATEGORY_CAPABILITY, |
109 |
[CCS_MAX_MAC_INDEX + CCS_SYS_CHOWN] |
110 |
= CCS_MAC_CATEGORY_CAPABILITY, |
111 |
[CCS_MAX_MAC_INDEX + CCS_SYS_IOCTL] |
112 |
= CCS_MAC_CATEGORY_CAPABILITY, |
113 |
[CCS_MAX_MAC_INDEX + CCS_SYS_KEXEC_LOAD] |
114 |
= CCS_MAC_CATEGORY_CAPABILITY, |
115 |
[CCS_MAX_MAC_INDEX + CCS_SYS_PIVOT_ROOT] |
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= CCS_MAC_CATEGORY_CAPABILITY, |
117 |
[CCS_MAX_MAC_INDEX + CCS_SYS_PTRACE] |
118 |
= CCS_MAC_CATEGORY_CAPABILITY, |
119 |
[CCS_MAX_MAC_INDEX + CCS_CONCEAL_MOUNT] |
120 |
= CCS_MAC_CATEGORY_CAPABILITY, |
121 |
}; |
122 |
|
123 |
/* Utility functions. */ |
124 |
|
125 |
/** |
126 |
* ccs_parse_ulong - Parse an "unsigned long" value. |
127 |
* |
128 |
* @result: Pointer to "unsigned long". |
129 |
* @str: Pointer to string to parse. |
130 |
* |
131 |
* Returns value type on success, 0 otherwise. |
132 |
* |
133 |
* The @src is updated to point the first character after the value |
134 |
* on success. |
135 |
*/ |
136 |
u8 ccs_parse_ulong(unsigned long *result, char **str) |
137 |
{ |
138 |
const char *cp = *str; |
139 |
char *ep; |
140 |
int base = 10; |
141 |
if (*cp == '0') { |
142 |
char c = *(cp + 1); |
143 |
if (c == 'x' || c == 'X') { |
144 |
base = 16; |
145 |
cp += 2; |
146 |
} else if (c >= '0' && c <= '7') { |
147 |
base = 8; |
148 |
cp++; |
149 |
} |
150 |
} |
151 |
*result = simple_strtoul(cp, &ep, base); |
152 |
if (cp == ep) |
153 |
return 0; |
154 |
*str = ep; |
155 |
switch (base) { |
156 |
case 16: |
157 |
return CCS_VALUE_TYPE_HEXADECIMAL; |
158 |
case 8: |
159 |
return CCS_VALUE_TYPE_OCTAL; |
160 |
default: |
161 |
return CCS_VALUE_TYPE_DECIMAL; |
162 |
} |
163 |
} |
164 |
|
165 |
/** |
166 |
* ccs_print_ulong - Print an "unsigned long" value. |
167 |
* |
168 |
* @buffer: Pointer to buffer. |
169 |
* @buffer_len: Size of @buffer. |
170 |
* @value: An "unsigned long" value. |
171 |
* @type: Type of @value. |
172 |
* |
173 |
* Returns nothing. |
174 |
*/ |
175 |
void ccs_print_ulong(char *buffer, const int buffer_len, |
176 |
const unsigned long value, const u8 type) |
177 |
{ |
178 |
if (type == CCS_VALUE_TYPE_DECIMAL) |
179 |
snprintf(buffer, buffer_len, "%lu", value); |
180 |
else if (type == CCS_VALUE_TYPE_OCTAL) |
181 |
snprintf(buffer, buffer_len, "0%lo", value); |
182 |
else if (type == CCS_VALUE_TYPE_HEXADECIMAL) |
183 |
snprintf(buffer, buffer_len, "0x%lX", value); |
184 |
else |
185 |
snprintf(buffer, buffer_len, "type(%u)", type); |
186 |
} |
187 |
|
188 |
/** |
189 |
* ccs_parse_name_union - Parse a ccs_name_union. |
190 |
* |
191 |
* @filename: Name or name group. |
192 |
* @ptr: Pointer to "struct ccs_name_union". |
193 |
* |
194 |
* Returns true on success, false otherwise. |
195 |
*/ |
196 |
bool ccs_parse_name_union(const char *filename, struct ccs_name_union *ptr) |
197 |
{ |
198 |
if (!ccs_is_correct_path(filename, 0, 0, 0)) |
199 |
return false; |
200 |
if (filename[0] == '@') { |
201 |
ptr->group = ccs_get_path_group(filename + 1); |
202 |
ptr->is_group = true; |
203 |
return ptr->group != NULL; |
204 |
} |
205 |
ptr->filename = ccs_get_name(filename); |
206 |
ptr->is_group = false; |
207 |
return ptr->filename != NULL; |
208 |
} |
209 |
|
210 |
/** |
211 |
* ccs_parse_number_union - Parse a ccs_number_union. |
212 |
* |
213 |
* @data: Number or number range or number group. |
214 |
* @ptr: Pointer to "struct ccs_number_union". |
215 |
* |
216 |
* Returns true on success, false otherwise. |
217 |
*/ |
218 |
bool ccs_parse_number_union(char *data, struct ccs_number_union *num) |
219 |
{ |
220 |
u8 type; |
221 |
unsigned long v; |
222 |
memset(num, 0, sizeof(*num)); |
223 |
if (data[0] == '@') { |
224 |
if (!ccs_is_correct_path(data, 0, 0, 0)) |
225 |
return false; |
226 |
num->group = ccs_get_number_group(data + 1); |
227 |
num->is_group = true; |
228 |
return num->group != NULL; |
229 |
} |
230 |
type = ccs_parse_ulong(&v, &data); |
231 |
if (!type) |
232 |
return false; |
233 |
num->values[0] = v; |
234 |
num->min_type = type; |
235 |
if (!*data) { |
236 |
num->values[1] = v; |
237 |
num->max_type = type; |
238 |
return true; |
239 |
} |
240 |
if (*data++ != '-') |
241 |
return false; |
242 |
type = ccs_parse_ulong(&v, &data); |
243 |
if (!type || *data) |
244 |
return false; |
245 |
num->values[1] = v; |
246 |
num->max_type = type; |
247 |
return true; |
248 |
} |
249 |
|
250 |
/** |
251 |
* ccs_is_byte_range - Check whether the string isa \ooo style octal value. |
252 |
* |
253 |
* @str: Pointer to the string. |
254 |
* |
255 |
* Returns true if @str is a \ooo style octal value, false otherwise. |
256 |
*/ |
257 |
static inline bool ccs_is_byte_range(const char *str) |
258 |
{ |
259 |
return *str >= '0' && *str++ <= '3' && |
260 |
*str >= '0' && *str++ <= '7' && |
261 |
*str >= '0' && *str <= '7'; |
262 |
} |
263 |
|
264 |
/** |
265 |
* ccs_is_decimal - Check whether the character is a decimal character. |
266 |
* |
267 |
* @c: The character to check. |
268 |
* |
269 |
* Returns true if @c is a decimal character, false otherwise. |
270 |
*/ |
271 |
static inline bool ccs_is_decimal(const char c) |
272 |
{ |
273 |
return c >= '0' && c <= '9'; |
274 |
} |
275 |
|
276 |
/** |
277 |
* ccs_is_hexadecimal - Check whether the character is a hexadecimal character. |
278 |
* |
279 |
* @c: The character to check. |
280 |
* |
281 |
* Returns true if @c is a hexadecimal character, false otherwise. |
282 |
*/ |
283 |
static inline bool ccs_is_hexadecimal(const char c) |
284 |
{ |
285 |
return (c >= '0' && c <= '9') || |
286 |
(c >= 'A' && c <= 'F') || |
287 |
(c >= 'a' && c <= 'f'); |
288 |
} |
289 |
|
290 |
/** |
291 |
* ccs_is_alphabet_char - Check whether the character is an alphabet. |
292 |
* |
293 |
* @c: The character to check. |
294 |
* |
295 |
* Returns true if @c is an alphabet character, false otherwise. |
296 |
*/ |
297 |
static inline bool ccs_is_alphabet_char(const char c) |
298 |
{ |
299 |
return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'); |
300 |
} |
301 |
|
302 |
/** |
303 |
* ccs_make_byte - Make byte value from three octal characters. |
304 |
* |
305 |
* @c1: The first character. |
306 |
* @c2: The second character. |
307 |
* @c3: The third character. |
308 |
* |
309 |
* Returns byte value. |
310 |
*/ |
311 |
static inline u8 ccs_make_byte(const u8 c1, const u8 c2, const u8 c3) |
312 |
{ |
313 |
return ((c1 - '0') << 6) + ((c2 - '0') << 3) + (c3 - '0'); |
314 |
} |
315 |
|
316 |
/** |
317 |
* ccs_str_starts - Check whether the given string starts with the given keyword. |
318 |
* |
319 |
* @src: Pointer to pointer to the string. |
320 |
* @find: Pointer to the keyword. |
321 |
* |
322 |
* Returns true if @src starts with @find, false otherwise. |
323 |
* |
324 |
* The @src is updated to point the first character after the @find |
325 |
* if @src starts with @find. |
326 |
*/ |
327 |
bool ccs_str_starts(char **src, const char *find) |
328 |
{ |
329 |
const int len = strlen(find); |
330 |
char *tmp = *src; |
331 |
if (strncmp(tmp, find, len)) |
332 |
return false; |
333 |
tmp += len; |
334 |
*src = tmp; |
335 |
return true; |
336 |
} |
337 |
|
338 |
/** |
339 |
* ccs_normalize_line - Format string. |
340 |
* |
341 |
* @buffer: The line to normalize. |
342 |
* |
343 |
* Leading and trailing whitespaces are removed. |
344 |
* Multiple whitespaces are packed into single space. |
345 |
* |
346 |
* Returns nothing. |
347 |
*/ |
348 |
void ccs_normalize_line(unsigned char *buffer) |
349 |
{ |
350 |
unsigned char *sp = buffer; |
351 |
unsigned char *dp = buffer; |
352 |
bool first = true; |
353 |
while (*sp && (*sp <= ' ' || *sp >= 127)) |
354 |
sp++; |
355 |
while (*sp) { |
356 |
if (!first) |
357 |
*dp++ = ' '; |
358 |
first = false; |
359 |
while (*sp > ' ' && *sp < 127) |
360 |
*dp++ = *sp++; |
361 |
while (*sp && (*sp <= ' ' || *sp >= 127)) |
362 |
sp++; |
363 |
} |
364 |
*dp = '\0'; |
365 |
} |
366 |
|
367 |
/** |
368 |
* ccs_tokenize - Tokenize string. |
369 |
* |
370 |
* @buffer: The line to tokenize. |
371 |
* @w: Pointer to "char *". |
372 |
* @size: Sizeof @w . |
373 |
* |
374 |
* Returns true on success, false otherwise. |
375 |
*/ |
376 |
bool ccs_tokenize(char *buffer, char *w[], size_t size) |
377 |
{ |
378 |
int count = size / sizeof(char *); |
379 |
int i; |
380 |
for (i = 0; i < count; i++) |
381 |
w[i] = ""; |
382 |
for (i = 0; i < count; i++) { |
383 |
char *cp = strchr(buffer, ' '); |
384 |
if (cp) |
385 |
*cp = '\0'; |
386 |
w[i] = buffer; |
387 |
if (!cp) |
388 |
break; |
389 |
buffer = cp + 1; |
390 |
} |
391 |
return i < count || !*buffer; |
392 |
} |
393 |
|
394 |
/** |
395 |
* ccs_is_correct_path - Validate a pathname. |
396 |
* |
397 |
* @filename: The pathname to check. |
398 |
* @start_type: Should the pathname start with '/'? |
399 |
* 1 = must / -1 = must not / 0 = don't care |
400 |
* @pattern_type: Can the pathname contain a wildcard? |
401 |
* 1 = must / -1 = must not / 0 = don't care |
402 |
* @end_type: Should the pathname end with '/'? |
403 |
* 1 = must / -1 = must not / 0 = don't care |
404 |
* |
405 |
* Check whether the given filename follows the naming rules. |
406 |
* Returns true if @filename follows the naming rules, false otherwise. |
407 |
*/ |
408 |
bool ccs_is_correct_path(const char *filename, const s8 start_type, |
409 |
const s8 pattern_type, const s8 end_type) |
410 |
{ |
411 |
const char *const start = filename; |
412 |
bool in_repetition = false; |
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 '{': /* "/\{" */ |
460 |
if (filename - 3 < start || |
461 |
*(filename - 3) != '/') |
462 |
break; |
463 |
if (pattern_type == -1) |
464 |
break; /* Must not contain pattern */ |
465 |
contains_pattern = true; |
466 |
in_repetition = true; |
467 |
continue; |
468 |
case '}': /* "\}/" */ |
469 |
if (*filename != '/') |
470 |
break; |
471 |
if (!in_repetition) |
472 |
break; |
473 |
in_repetition = false; |
474 |
continue; |
475 |
case '0': /* "\ooo" */ |
476 |
case '1': |
477 |
case '2': |
478 |
case '3': |
479 |
d = *filename++; |
480 |
if (d < '0' || d > '7') |
481 |
break; |
482 |
e = *filename++; |
483 |
if (e < '0' || e > '7') |
484 |
break; |
485 |
c = ccs_make_byte(c, d, e); |
486 |
if (c && (c <= ' ' || c >= 127)) |
487 |
continue; /* pattern is not \000 */ |
488 |
} |
489 |
goto out; |
490 |
} else if (in_repetition && c == '/') { |
491 |
goto out; |
492 |
} else if (c <= ' ' || c >= 127) { |
493 |
goto out; |
494 |
} |
495 |
} |
496 |
if (pattern_type == 1) { /* Must contain pattern */ |
497 |
if (!contains_pattern) |
498 |
goto out; |
499 |
} |
500 |
if (in_repetition) |
501 |
goto out; |
502 |
return true; |
503 |
out: |
504 |
return false; |
505 |
} |
506 |
|
507 |
/** |
508 |
* ccs_is_correct_domain - Check whether the given domainname follows the naming rules. |
509 |
* |
510 |
* @domainname: The domainname to check. |
511 |
* |
512 |
* Returns true if @domainname follows the naming rules, false otherwise. |
513 |
*/ |
514 |
bool ccs_is_correct_domain(const unsigned char *domainname) |
515 |
{ |
516 |
unsigned char c; |
517 |
unsigned char d; |
518 |
unsigned char e; |
519 |
if (!domainname || strncmp(domainname, ROOT_NAME, ROOT_NAME_LEN)) |
520 |
goto out; |
521 |
domainname += ROOT_NAME_LEN; |
522 |
if (!*domainname) |
523 |
return true; |
524 |
do { |
525 |
if (*domainname++ != ' ') |
526 |
goto out; |
527 |
if (*domainname++ != '/') |
528 |
goto out; |
529 |
while (1) { |
530 |
c = *domainname; |
531 |
if (!c || c == ' ') |
532 |
break; |
533 |
domainname++; |
534 |
if (c == '\\') { |
535 |
c = *domainname++; |
536 |
switch ((c)) { |
537 |
case '\\': /* "\\" */ |
538 |
continue; |
539 |
case '0': /* "\ooo" */ |
540 |
case '1': |
541 |
case '2': |
542 |
case '3': |
543 |
d = *domainname++; |
544 |
if (d < '0' || d > '7') |
545 |
break; |
546 |
e = *domainname++; |
547 |
if (e < '0' || e > '7') |
548 |
break; |
549 |
c = ccs_make_byte(c, d, e); |
550 |
if (c && (c <= ' ' || c >= 127)) |
551 |
/* pattern is not \000 */ |
552 |
continue; |
553 |
} |
554 |
goto out; |
555 |
} else if (c < ' ' || c >= 127) { |
556 |
goto out; |
557 |
} |
558 |
} |
559 |
} while (*domainname); |
560 |
return true; |
561 |
out: |
562 |
return false; |
563 |
} |
564 |
|
565 |
/** |
566 |
* ccs_is_domain_def - Check whether the given token can be a domainname. |
567 |
* |
568 |
* @buffer: The token to check. |
569 |
* |
570 |
* Returns true if @buffer possibly be a domainname, false otherwise. |
571 |
*/ |
572 |
bool ccs_is_domain_def(const unsigned char *buffer) |
573 |
{ |
574 |
return !strncmp(buffer, ROOT_NAME, ROOT_NAME_LEN); |
575 |
} |
576 |
|
577 |
/** |
578 |
* ccs_find_domain - Find a domain by the given name. |
579 |
* |
580 |
* @domainname: The domainname to find. |
581 |
* |
582 |
* Returns pointer to "struct ccs_domain_info" if found, NULL otherwise. |
583 |
* |
584 |
* Caller holds ccs_read_lock(). |
585 |
*/ |
586 |
struct ccs_domain_info *ccs_find_domain(const char *domainname) |
587 |
{ |
588 |
struct ccs_domain_info *domain; |
589 |
struct ccs_path_info name; |
590 |
name.name = domainname; |
591 |
ccs_fill_path_info(&name); |
592 |
list_for_each_entry_rcu(domain, &ccs_domain_list, list) { |
593 |
if (!domain->is_deleted && |
594 |
!ccs_pathcmp(&name, domain->domainname)) |
595 |
return domain; |
596 |
} |
597 |
return NULL; |
598 |
} |
599 |
|
600 |
/** |
601 |
* ccs_const_part_length - Evaluate the initial length without a pattern in a token. |
602 |
* |
603 |
* @filename: The string to evaluate. |
604 |
* |
605 |
* Returns the initial length without a pattern in @filename. |
606 |
*/ |
607 |
static int ccs_const_part_length(const char *filename) |
608 |
{ |
609 |
char c; |
610 |
int len = 0; |
611 |
if (!filename) |
612 |
return 0; |
613 |
while (1) { |
614 |
c = *filename++; |
615 |
if (!c) |
616 |
break; |
617 |
if (c != '\\') { |
618 |
len++; |
619 |
continue; |
620 |
} |
621 |
c = *filename++; |
622 |
switch (c) { |
623 |
case '\\': /* "\\" */ |
624 |
len += 2; |
625 |
continue; |
626 |
case '0': /* "\ooo" */ |
627 |
case '1': |
628 |
case '2': |
629 |
case '3': |
630 |
c = *filename++; |
631 |
if (c < '0' || c > '7') |
632 |
break; |
633 |
c = *filename++; |
634 |
if (c < '0' || c > '7') |
635 |
break; |
636 |
len += 4; |
637 |
continue; |
638 |
} |
639 |
break; |
640 |
} |
641 |
return len; |
642 |
} |
643 |
|
644 |
/** |
645 |
* ccs_fill_path_info - Fill in "struct ccs_path_info" members. |
646 |
* |
647 |
* @ptr: Pointer to "struct ccs_path_info" to fill in. |
648 |
* |
649 |
* The caller sets "struct ccs_path_info"->name. |
650 |
*/ |
651 |
void ccs_fill_path_info(struct ccs_path_info *ptr) |
652 |
{ |
653 |
const char *name = ptr->name; |
654 |
const int len = strlen(name); |
655 |
ptr->total_len = len; |
656 |
ptr->const_len = ccs_const_part_length(name); |
657 |
ptr->is_dir = len && (name[len - 1] == '/'); |
658 |
ptr->is_patterned = (ptr->const_len < len); |
659 |
ptr->hash = full_name_hash(name, len); |
660 |
} |
661 |
|
662 |
/** |
663 |
* ccs_file_matches_pattern2 - Pattern matching without '/' character and "\-" pattern. |
664 |
* |
665 |
* @filename: The start of string to check. |
666 |
* @filename_end: The end of string to check. |
667 |
* @pattern: The start of pattern to compare. |
668 |
* @pattern_end: The end of pattern to compare. |
669 |
* |
670 |
* Returns true if @filename matches @pattern, false otherwise. |
671 |
*/ |
672 |
static bool ccs_file_matches_pattern2(const char *filename, |
673 |
const char *filename_end, |
674 |
const char *pattern, |
675 |
const char *pattern_end) |
676 |
{ |
677 |
while (filename < filename_end && pattern < pattern_end) { |
678 |
char c; |
679 |
if (*pattern != '\\') { |
680 |
if (*filename++ != *pattern++) |
681 |
return false; |
682 |
continue; |
683 |
} |
684 |
c = *filename; |
685 |
pattern++; |
686 |
switch (*pattern) { |
687 |
int i; |
688 |
int j; |
689 |
case '?': |
690 |
if (c == '/') { |
691 |
return false; |
692 |
} else if (c == '\\') { |
693 |
if (filename[1] == '\\') |
694 |
filename++; |
695 |
else if (ccs_is_byte_range(filename + 1)) |
696 |
filename += 3; |
697 |
else |
698 |
return false; |
699 |
} |
700 |
break; |
701 |
case '\\': |
702 |
if (c != '\\') |
703 |
return false; |
704 |
if (*++filename != '\\') |
705 |
return false; |
706 |
break; |
707 |
case '+': |
708 |
if (!ccs_is_decimal(c)) |
709 |
return false; |
710 |
break; |
711 |
case 'x': |
712 |
if (!ccs_is_hexadecimal(c)) |
713 |
return false; |
714 |
break; |
715 |
case 'a': |
716 |
if (!ccs_is_alphabet_char(c)) |
717 |
return false; |
718 |
break; |
719 |
case '0': |
720 |
case '1': |
721 |
case '2': |
722 |
case '3': |
723 |
if (c == '\\' && ccs_is_byte_range(filename + 1) |
724 |
&& !strncmp(filename + 1, pattern, 3)) { |
725 |
filename += 3; |
726 |
pattern += 2; |
727 |
break; |
728 |
} |
729 |
return false; /* Not matched. */ |
730 |
case '*': |
731 |
case '@': |
732 |
for (i = 0; i <= filename_end - filename; i++) { |
733 |
if (ccs_file_matches_pattern2(filename + i, |
734 |
filename_end, |
735 |
pattern + 1, |
736 |
pattern_end)) |
737 |
return true; |
738 |
c = filename[i]; |
739 |
if (c == '.' && *pattern == '@') |
740 |
break; |
741 |
if (c != '\\') |
742 |
continue; |
743 |
if (filename[i + 1] == '\\') |
744 |
i++; |
745 |
else if (ccs_is_byte_range(filename + i + 1)) |
746 |
i += 3; |
747 |
else |
748 |
break; /* Bad pattern. */ |
749 |
} |
750 |
return false; /* Not matched. */ |
751 |
default: |
752 |
j = 0; |
753 |
c = *pattern; |
754 |
if (c == '$') { |
755 |
while (ccs_is_decimal(filename[j])) |
756 |
j++; |
757 |
} else if (c == 'X') { |
758 |
while (ccs_is_hexadecimal(filename[j])) |
759 |
j++; |
760 |
} else if (c == 'A') { |
761 |
while (ccs_is_alphabet_char(filename[j])) |
762 |
j++; |
763 |
} |
764 |
for (i = 1; i <= j; i++) { |
765 |
if (ccs_file_matches_pattern2(filename + i, |
766 |
filename_end, |
767 |
pattern + 1, |
768 |
pattern_end)) |
769 |
return true; |
770 |
} |
771 |
return false; /* Not matched or bad pattern. */ |
772 |
} |
773 |
filename++; |
774 |
pattern++; |
775 |
} |
776 |
while (*pattern == '\\' && |
777 |
(*(pattern + 1) == '*' || *(pattern + 1) == '@')) |
778 |
pattern += 2; |
779 |
return filename == filename_end && pattern == pattern_end; |
780 |
} |
781 |
|
782 |
/** |
783 |
* ccs_file_matches_pattern - Pattern matching without without '/' character. |
784 |
* |
785 |
* @filename: The start of string to check. |
786 |
* @filename_end: The end of string to check. |
787 |
* @pattern: The start of pattern to compare. |
788 |
* @pattern_end: The end of pattern to compare. |
789 |
* |
790 |
* Returns true if @filename matches @pattern, false otherwise. |
791 |
*/ |
792 |
static bool ccs_file_matches_pattern(const char *filename, |
793 |
const char *filename_end, |
794 |
const char *pattern, |
795 |
const char *pattern_end) |
796 |
{ |
797 |
const char *pattern_start = pattern; |
798 |
bool first = true; |
799 |
bool result; |
800 |
while (pattern < pattern_end - 1) { |
801 |
/* Split at "\-" pattern. */ |
802 |
if (*pattern++ != '\\' || *pattern++ != '-') |
803 |
continue; |
804 |
result = ccs_file_matches_pattern2(filename, filename_end, |
805 |
pattern_start, pattern - 2); |
806 |
if (first) |
807 |
result = !result; |
808 |
if (result) |
809 |
return false; |
810 |
first = false; |
811 |
pattern_start = pattern; |
812 |
} |
813 |
result = ccs_file_matches_pattern2(filename, filename_end, |
814 |
pattern_start, pattern_end); |
815 |
return first ? result : !result; |
816 |
} |
817 |
|
818 |
/** |
819 |
* ccs_path_matches_pattern2 - Do pathname pattern matching. |
820 |
* |
821 |
* @f: The start of string to check. |
822 |
* @p: The start of pattern to compare. |
823 |
* |
824 |
* Returns true if @f matches @p, false otherwise. |
825 |
*/ |
826 |
static bool ccs_path_matches_pattern2(const char *f, const char *p) |
827 |
{ |
828 |
const char *f_delimiter; |
829 |
const char *p_delimiter; |
830 |
while (*f && *p) { |
831 |
f_delimiter = strchr(f, '/'); |
832 |
if (!f_delimiter) |
833 |
f_delimiter = f + strlen(f); |
834 |
p_delimiter = strchr(p, '/'); |
835 |
if (!p_delimiter) |
836 |
p_delimiter = p + strlen(p); |
837 |
if (*p == '\\' && *(p + 1) == '{') |
838 |
goto recursive; |
839 |
if (!ccs_file_matches_pattern(f, f_delimiter, p, p_delimiter)) |
840 |
return false; |
841 |
f = f_delimiter; |
842 |
if (*f) |
843 |
f++; |
844 |
p = p_delimiter; |
845 |
if (*p) |
846 |
p++; |
847 |
} |
848 |
/* Ignore trailing "\*" and "\@" in @pattern. */ |
849 |
while (*p == '\\' && |
850 |
(*(p + 1) == '*' || *(p + 1) == '@')) |
851 |
p += 2; |
852 |
return !*f && !*p; |
853 |
recursive: |
854 |
/* |
855 |
* The "\{" pattern is permitted only after '/' character. |
856 |
* This guarantees that below "*(p - 1)" is safe. |
857 |
* Also, the "\}" pattern is permitted only before '/' character |
858 |
* so that "\{" + "\}" pair will not break the "\-" operator. |
859 |
*/ |
860 |
if (*(p - 1) != '/' || p_delimiter <= p + 3 || *p_delimiter != '/' || |
861 |
*(p_delimiter - 1) != '}' || *(p_delimiter - 2) != '\\') |
862 |
return false; /* Bad pattern. */ |
863 |
do { |
864 |
/* Compare current component with pattern. */ |
865 |
if (!ccs_file_matches_pattern(f, f_delimiter, p + 2, |
866 |
p_delimiter - 2)) |
867 |
break; |
868 |
/* Proceed to next component. */ |
869 |
f = f_delimiter; |
870 |
if (!*f) |
871 |
break; |
872 |
f++; |
873 |
/* Continue comparison. */ |
874 |
if (ccs_path_matches_pattern2(f, p_delimiter + 1)) |
875 |
return true; |
876 |
f_delimiter = strchr(f, '/'); |
877 |
} while (f_delimiter); |
878 |
return false; /* Not matched. */ |
879 |
} |
880 |
|
881 |
/** |
882 |
* ccs_path_matches_pattern - Check whether the given filename matches the given pattern. |
883 |
* |
884 |
* @filename: The filename to check. |
885 |
* @pattern: The pattern to compare. |
886 |
* |
887 |
* Returns true if matches, false otherwise. |
888 |
* |
889 |
* The following patterns are available. |
890 |
* \\ \ itself. |
891 |
* \ooo Octal representation of a byte. |
892 |
* \* Zero or more repetitions of characters other than '/'. |
893 |
* \@ Zero or more repetitions of characters other than '/' or '.'. |
894 |
* \? 1 byte character other than '/'. |
895 |
* \$ One or more repetitions of decimal digits. |
896 |
* \+ 1 decimal digit. |
897 |
* \X One or more repetitions of hexadecimal digits. |
898 |
* \x 1 hexadecimal digit. |
899 |
* \A One or more repetitions of alphabet characters. |
900 |
* \a 1 alphabet character. |
901 |
* |
902 |
* \- Subtraction operator. |
903 |
* |
904 |
* /\{dir\}/ '/' + 'One or more repetitions of dir/' (e.g. /dir/ /dir/dir/ |
905 |
* /dir/dir/dir/ ). |
906 |
*/ |
907 |
bool ccs_path_matches_pattern(const struct ccs_path_info *filename, |
908 |
const struct ccs_path_info *pattern) |
909 |
{ |
910 |
const char *f = filename->name; |
911 |
const char *p = pattern->name; |
912 |
const int len = pattern->const_len; |
913 |
/* If @pattern doesn't contain pattern, I can use strcmp(). */ |
914 |
if (!pattern->is_patterned) |
915 |
return !ccs_pathcmp(filename, pattern); |
916 |
/* Don't compare directory and non-directory. */ |
917 |
if (filename->is_dir != pattern->is_dir) |
918 |
return false; |
919 |
/* Compare the initial length without patterns. */ |
920 |
if (strncmp(f, p, len)) |
921 |
return false; |
922 |
f += len; |
923 |
p += len; |
924 |
return ccs_path_matches_pattern2(f, p); |
925 |
} |
926 |
|
927 |
/** |
928 |
* ccs_get_exe - Get ccs_realpath() of current process. |
929 |
* |
930 |
* Returns the ccs_realpath() of current process on success, NULL otherwise. |
931 |
* |
932 |
* This function uses kzalloc(), so the caller must kfree() |
933 |
* if this function didn't return NULL. |
934 |
*/ |
935 |
const char *ccs_get_exe(void) |
936 |
{ |
937 |
struct mm_struct *mm = current->mm; |
938 |
struct vm_area_struct *vma; |
939 |
const char *cp = NULL; |
940 |
if (!mm) |
941 |
return NULL; |
942 |
down_read(&mm->mmap_sem); |
943 |
for (vma = mm->mmap; vma; vma = vma->vm_next) { |
944 |
if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) { |
945 |
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20) |
946 |
struct path path = { vma->vm_file->f_vfsmnt, |
947 |
vma->vm_file->f_dentry }; |
948 |
cp = ccs_realpath_from_path(&path); |
949 |
#else |
950 |
cp = ccs_realpath_from_path(&vma->vm_file->f_path); |
951 |
#endif |
952 |
break; |
953 |
} |
954 |
} |
955 |
up_read(&mm->mmap_sem); |
956 |
return cp; |
957 |
} |
958 |
|
959 |
/** |
960 |
* ccs_get_audit - Get audit mode. |
961 |
* |
962 |
* @profile: Profile number. |
963 |
* @index: Index number of functionality. |
964 |
* @is_granted: True if granted log, false otehrwise. |
965 |
* |
966 |
* Returns mode. |
967 |
*/ |
968 |
bool ccs_get_audit(const u8 profile, const u8 index, const bool is_granted) |
969 |
{ |
970 |
u8 mode; |
971 |
const u8 category = ccs_index2category[index] + CCS_MAX_MAC_INDEX |
972 |
+ CCS_MAX_CAPABILITY_INDEX; |
973 |
if (!ccs_policy_loaded) |
974 |
return false; |
975 |
mode = ccs_profile(profile)->config[index]; |
976 |
if (mode == CCS_CONFIG_USE_DEFAULT) |
977 |
mode = ccs_profile(profile)->config[category]; |
978 |
if (mode == CCS_CONFIG_USE_DEFAULT) |
979 |
mode = ccs_profile(profile)->default_config; |
980 |
if (is_granted) |
981 |
return mode & CCS_CONFIG_WANT_GRANT_LOG; |
982 |
return mode & CCS_CONFIG_WANT_REJECT_LOG; |
983 |
} |
984 |
|
985 |
/** |
986 |
* ccs_get_mode - Get MAC mode. |
987 |
* |
988 |
* @profile: Profile number. |
989 |
* @index: Index number of functionality. |
990 |
* |
991 |
* Returns mode. |
992 |
*/ |
993 |
int ccs_get_mode(const u8 profile, const u8 index) |
994 |
{ |
995 |
u8 mode; |
996 |
const u8 category = ccs_index2category[index] + CCS_MAX_MAC_INDEX |
997 |
+ CCS_MAX_CAPABILITY_INDEX; |
998 |
if (!ccs_policy_loaded) |
999 |
return CCS_CONFIG_DISABLED; |
1000 |
mode = ccs_profile(profile)->config[index]; |
1001 |
if (mode == CCS_CONFIG_USE_DEFAULT) |
1002 |
mode = ccs_profile(profile)->config[category]; |
1003 |
if (mode == CCS_CONFIG_USE_DEFAULT) |
1004 |
mode = ccs_profile(profile)->default_config; |
1005 |
return mode & 3; |
1006 |
} |
1007 |
|
1008 |
/** |
1009 |
* ccs_init_request_info - Initialize "struct ccs_request_info" members. |
1010 |
* |
1011 |
* @r: Pointer to "struct ccs_request_info" to initialize. |
1012 |
* @domain: Pointer to "struct ccs_domain_info". NULL for ccs_current_domain(). |
1013 |
* @index: Index number of functionality. |
1014 |
* |
1015 |
* Returns mode. |
1016 |
*/ |
1017 |
int ccs_init_request_info(struct ccs_request_info *r, |
1018 |
struct ccs_domain_info *domain, const u8 index) |
1019 |
{ |
1020 |
u8 profile; |
1021 |
memset(r, 0, sizeof(*r)); |
1022 |
if (!domain) |
1023 |
domain = ccs_current_domain(); |
1024 |
r->domain = domain; |
1025 |
profile = domain->profile; |
1026 |
r->profile = profile; |
1027 |
r->type = index; |
1028 |
r->mode = ccs_get_mode(profile, index); |
1029 |
return r->mode; |
1030 |
} |
1031 |
|
1032 |
/** |
1033 |
* ccs_last_word - Get last component of a line. |
1034 |
* |
1035 |
* @line: A line. |
1036 |
* |
1037 |
* Returns the last word of a line. |
1038 |
*/ |
1039 |
const char *ccs_last_word(const char *name) |
1040 |
{ |
1041 |
const char *cp = strrchr(name, ' '); |
1042 |
if (cp) |
1043 |
return cp + 1; |
1044 |
return name; |
1045 |
} |
1046 |
|
1047 |
/** |
1048 |
* ccs_warn_log - Print warning or error message on console. |
1049 |
* |
1050 |
* @r: Pointer to "struct ccs_request_info". |
1051 |
* @fmt: The printf()'s format string, followed by parameters. |
1052 |
*/ |
1053 |
void ccs_warn_log(struct ccs_request_info *r, const char *fmt, ...) |
1054 |
{ |
1055 |
int len = PAGE_SIZE; |
1056 |
va_list args; |
1057 |
char *buffer; |
1058 |
const struct ccs_profile *profile = |
1059 |
ccs_profile(r->domain->profile); |
1060 |
switch (r->mode) { |
1061 |
case CCS_CONFIG_ENFORCING: |
1062 |
if (!profile->enforcing->enforcing_verbose) |
1063 |
return; |
1064 |
break; |
1065 |
case CCS_CONFIG_PERMISSIVE: |
1066 |
if (!profile->permissive->permissive_verbose) |
1067 |
return; |
1068 |
break; |
1069 |
case CCS_CONFIG_LEARNING: |
1070 |
if (!profile->learning->learning_verbose) |
1071 |
return; |
1072 |
break; |
1073 |
} |
1074 |
while (1) { |
1075 |
int len2; |
1076 |
buffer = kmalloc(len, GFP_KERNEL); |
1077 |
if (!buffer) |
1078 |
return; |
1079 |
va_start(args, fmt); |
1080 |
len2 = vsnprintf(buffer, len - 1, fmt, args); |
1081 |
va_end(args); |
1082 |
if (len2 <= len - 1) { |
1083 |
buffer[len2] = '\0'; |
1084 |
break; |
1085 |
} |
1086 |
len = len2 + 1; |
1087 |
kfree(buffer); |
1088 |
} |
1089 |
printk(KERN_WARNING "%s: Access %s denied for %s\n", |
1090 |
r->mode == CCS_CONFIG_ENFORCING ? "ERROR" : "WARNING", buffer, |
1091 |
ccs_last_word(r->domain->domainname->name)); |
1092 |
kfree(buffer); |
1093 |
} |
1094 |
|
1095 |
/** |
1096 |
* ccs_domain_quota_ok - Check for domain's quota. |
1097 |
* |
1098 |
* @r: Pointer to "struct ccs_request_info". |
1099 |
* |
1100 |
* Returns true if the domain is not exceeded quota, false otherwise. |
1101 |
* |
1102 |
* Caller holds ccs_read_lock(). |
1103 |
*/ |
1104 |
bool ccs_domain_quota_ok(struct ccs_request_info *r) |
1105 |
{ |
1106 |
unsigned int count = 0; |
1107 |
struct ccs_domain_info *domain = r->domain; |
1108 |
struct ccs_acl_info *ptr; |
1109 |
if (r->mode != 1) |
1110 |
return false; |
1111 |
if (!domain) |
1112 |
return true; |
1113 |
list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) { |
1114 |
if (ptr->is_deleted) |
1115 |
continue; |
1116 |
switch (ptr->type) { |
1117 |
u16 perm; |
1118 |
u8 i; |
1119 |
case CCS_TYPE_PATH_ACL: |
1120 |
perm = container_of(ptr, struct ccs_path_acl, head)-> |
1121 |
perm; |
1122 |
for (i = 0; i < CCS_MAX_PATH_OPERATION; i++) |
1123 |
if (perm & (1 << i)) |
1124 |
count++; |
1125 |
if (perm & (1 << CCS_TYPE_READ_WRITE)) |
1126 |
count -= 2; |
1127 |
break; |
1128 |
case CCS_TYPE_PATH2_ACL: |
1129 |
perm = container_of(ptr, struct ccs_path2_acl, |
1130 |
head)->perm; |
1131 |
for (i = 0; i < CCS_MAX_PATH2_OPERATION; i++) |
1132 |
if (perm & (1 << i)) |
1133 |
count++; |
1134 |
break; |
1135 |
case CCS_TYPE_EXECUTE_HANDLER: |
1136 |
case CCS_TYPE_DENIED_EXECUTE_HANDLER: |
1137 |
break; |
1138 |
case CCS_TYPE_PATH_NUMBER_ACL: |
1139 |
perm = container_of(ptr, struct ccs_path_number_acl, |
1140 |
head)->perm; |
1141 |
for (i = 0; i < CCS_MAX_PATH_NUMBER_OPERATION; i++) |
1142 |
if (perm & (1 << i)) |
1143 |
count++; |
1144 |
break; |
1145 |
case CCS_TYPE_PATH_NUMBER3_ACL: |
1146 |
perm = container_of(ptr, |
1147 |
struct ccs_path_number3_acl, |
1148 |
head)->perm; |
1149 |
for (i = 0; i < CCS_MAX_PATH_NUMBER3_OPERATION; |
1150 |
i++) |
1151 |
if (perm & (1 << i)) |
1152 |
count++; |
1153 |
break; |
1154 |
case CCS_TYPE_IP_NETWORK_ACL: |
1155 |
perm = container_of(ptr, struct ccs_ip_network_acl, |
1156 |
head)->perm; |
1157 |
for (i = 0; i < CCS_MAX_NETWORK_OPERATION; i++) |
1158 |
if (perm & (1 << i)) |
1159 |
count++; |
1160 |
break; |
1161 |
default: |
1162 |
count++; |
1163 |
} |
1164 |
} |
1165 |
if (count < ccs_profile(domain->profile)->learning->learning_max_entry) |
1166 |
return true; |
1167 |
if (!domain->quota_warned) { |
1168 |
domain->quota_warned = true; |
1169 |
printk(KERN_WARNING "WARNING: " |
1170 |
"Domain '%s' has so many ACLs to hold. " |
1171 |
"Stopped learning mode.\n", domain->domainname->name); |
1172 |
} |
1173 |
return false; |
1174 |
} |