Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
c3ef1500 TH |
2 | /* |
3 | * security/tomoyo/util.c | |
4 | * | |
0f2a55d5 | 5 | * Copyright (C) 2005-2011 NTT DATA CORPORATION |
c3ef1500 TH |
6 | */ |
7 | ||
8 | #include <linux/slab.h> | |
b2d09103 IM |
9 | #include <linux/rculist.h> |
10 | ||
c3ef1500 TH |
11 | #include "common.h" |
12 | ||
13 | /* Lock for protecting policy. */ | |
14 | DEFINE_MUTEX(tomoyo_policy_lock); | |
15 | ||
16 | /* Has /sbin/init started? */ | |
17 | bool tomoyo_policy_loaded; | |
18 | ||
2c47ab93 TH |
19 | /* |
20 | * Mapping table from "enum tomoyo_mac_index" to | |
21 | * "enum tomoyo_mac_category_index". | |
22 | */ | |
23 | const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX] = { | |
24 | /* CONFIG::file group */ | |
25 | [TOMOYO_MAC_FILE_EXECUTE] = TOMOYO_MAC_CATEGORY_FILE, | |
26 | [TOMOYO_MAC_FILE_OPEN] = TOMOYO_MAC_CATEGORY_FILE, | |
27 | [TOMOYO_MAC_FILE_CREATE] = TOMOYO_MAC_CATEGORY_FILE, | |
28 | [TOMOYO_MAC_FILE_UNLINK] = TOMOYO_MAC_CATEGORY_FILE, | |
29 | [TOMOYO_MAC_FILE_GETATTR] = TOMOYO_MAC_CATEGORY_FILE, | |
30 | [TOMOYO_MAC_FILE_MKDIR] = TOMOYO_MAC_CATEGORY_FILE, | |
31 | [TOMOYO_MAC_FILE_RMDIR] = TOMOYO_MAC_CATEGORY_FILE, | |
32 | [TOMOYO_MAC_FILE_MKFIFO] = TOMOYO_MAC_CATEGORY_FILE, | |
33 | [TOMOYO_MAC_FILE_MKSOCK] = TOMOYO_MAC_CATEGORY_FILE, | |
34 | [TOMOYO_MAC_FILE_TRUNCATE] = TOMOYO_MAC_CATEGORY_FILE, | |
35 | [TOMOYO_MAC_FILE_SYMLINK] = TOMOYO_MAC_CATEGORY_FILE, | |
36 | [TOMOYO_MAC_FILE_MKBLOCK] = TOMOYO_MAC_CATEGORY_FILE, | |
37 | [TOMOYO_MAC_FILE_MKCHAR] = TOMOYO_MAC_CATEGORY_FILE, | |
38 | [TOMOYO_MAC_FILE_LINK] = TOMOYO_MAC_CATEGORY_FILE, | |
39 | [TOMOYO_MAC_FILE_RENAME] = TOMOYO_MAC_CATEGORY_FILE, | |
40 | [TOMOYO_MAC_FILE_CHMOD] = TOMOYO_MAC_CATEGORY_FILE, | |
41 | [TOMOYO_MAC_FILE_CHOWN] = TOMOYO_MAC_CATEGORY_FILE, | |
42 | [TOMOYO_MAC_FILE_CHGRP] = TOMOYO_MAC_CATEGORY_FILE, | |
43 | [TOMOYO_MAC_FILE_IOCTL] = TOMOYO_MAC_CATEGORY_FILE, | |
44 | [TOMOYO_MAC_FILE_CHROOT] = TOMOYO_MAC_CATEGORY_FILE, | |
45 | [TOMOYO_MAC_FILE_MOUNT] = TOMOYO_MAC_CATEGORY_FILE, | |
46 | [TOMOYO_MAC_FILE_UMOUNT] = TOMOYO_MAC_CATEGORY_FILE, | |
47 | [TOMOYO_MAC_FILE_PIVOT_ROOT] = TOMOYO_MAC_CATEGORY_FILE, | |
059d84db TH |
48 | /* CONFIG::network group */ |
49 | [TOMOYO_MAC_NETWORK_INET_STREAM_BIND] = | |
50 | TOMOYO_MAC_CATEGORY_NETWORK, | |
51 | [TOMOYO_MAC_NETWORK_INET_STREAM_LISTEN] = | |
52 | TOMOYO_MAC_CATEGORY_NETWORK, | |
53 | [TOMOYO_MAC_NETWORK_INET_STREAM_CONNECT] = | |
54 | TOMOYO_MAC_CATEGORY_NETWORK, | |
55 | [TOMOYO_MAC_NETWORK_INET_DGRAM_BIND] = | |
56 | TOMOYO_MAC_CATEGORY_NETWORK, | |
57 | [TOMOYO_MAC_NETWORK_INET_DGRAM_SEND] = | |
58 | TOMOYO_MAC_CATEGORY_NETWORK, | |
59 | [TOMOYO_MAC_NETWORK_INET_RAW_BIND] = | |
60 | TOMOYO_MAC_CATEGORY_NETWORK, | |
61 | [TOMOYO_MAC_NETWORK_INET_RAW_SEND] = | |
62 | TOMOYO_MAC_CATEGORY_NETWORK, | |
63 | [TOMOYO_MAC_NETWORK_UNIX_STREAM_BIND] = | |
64 | TOMOYO_MAC_CATEGORY_NETWORK, | |
65 | [TOMOYO_MAC_NETWORK_UNIX_STREAM_LISTEN] = | |
66 | TOMOYO_MAC_CATEGORY_NETWORK, | |
67 | [TOMOYO_MAC_NETWORK_UNIX_STREAM_CONNECT] = | |
68 | TOMOYO_MAC_CATEGORY_NETWORK, | |
69 | [TOMOYO_MAC_NETWORK_UNIX_DGRAM_BIND] = | |
70 | TOMOYO_MAC_CATEGORY_NETWORK, | |
71 | [TOMOYO_MAC_NETWORK_UNIX_DGRAM_SEND] = | |
72 | TOMOYO_MAC_CATEGORY_NETWORK, | |
73 | [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_BIND] = | |
74 | TOMOYO_MAC_CATEGORY_NETWORK, | |
75 | [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_LISTEN] = | |
76 | TOMOYO_MAC_CATEGORY_NETWORK, | |
77 | [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_CONNECT] = | |
78 | TOMOYO_MAC_CATEGORY_NETWORK, | |
d58e0da8 TH |
79 | /* CONFIG::misc group */ |
80 | [TOMOYO_MAC_ENVIRON] = TOMOYO_MAC_CATEGORY_MISC, | |
2c47ab93 TH |
81 | }; |
82 | ||
b22b8b9f TH |
83 | /** |
84 | * tomoyo_convert_time - Convert time_t to YYYY/MM/DD hh/mm/ss. | |
85 | * | |
98eaa63e C |
86 | * @time64: Seconds since 1970/01/01 00:00:00. |
87 | * @stamp: Pointer to "struct tomoyo_time". | |
b22b8b9f TH |
88 | * |
89 | * Returns nothing. | |
b22b8b9f | 90 | */ |
92734092 | 91 | void tomoyo_convert_time(time64_t time64, struct tomoyo_time *stamp) |
b22b8b9f | 92 | { |
92734092 | 93 | struct tm tm; |
cdcf6723 | 94 | |
92734092 AB |
95 | time64_to_tm(time64, 0, &tm); |
96 | stamp->sec = tm.tm_sec; | |
97 | stamp->min = tm.tm_min; | |
98 | stamp->hour = tm.tm_hour; | |
99 | stamp->day = tm.tm_mday; | |
100 | stamp->month = tm.tm_mon + 1; | |
101 | stamp->year = tm.tm_year + 1900; | |
b22b8b9f TH |
102 | } |
103 | ||
a238cf5b TH |
104 | /** |
105 | * tomoyo_permstr - Find permission keywords. | |
106 | * | |
107 | * @string: String representation for permissions in foo/bar/buz format. | |
108 | * @keyword: Keyword to find from @string/ | |
109 | * | |
f09c296e | 110 | * Returns true if @keyword was found in @string, false otherwise. |
a238cf5b TH |
111 | * |
112 | * This function assumes that strncmp(w1, w2, strlen(w1)) != 0 if w1 != w2. | |
113 | */ | |
114 | bool tomoyo_permstr(const char *string, const char *keyword) | |
115 | { | |
116 | const char *cp = strstr(string, keyword); | |
cdcf6723 | 117 | |
a238cf5b TH |
118 | if (cp) |
119 | return cp == string || *(cp - 1) == '/'; | |
120 | return false; | |
121 | } | |
122 | ||
123 | /** | |
124 | * tomoyo_read_token - Read a word from a line. | |
125 | * | |
126 | * @param: Pointer to "struct tomoyo_acl_param". | |
127 | * | |
128 | * Returns a word on success, "" otherwise. | |
129 | * | |
130 | * To allow the caller to skip NULL check, this function returns "" rather than | |
131 | * NULL if there is no more words to read. | |
132 | */ | |
133 | char *tomoyo_read_token(struct tomoyo_acl_param *param) | |
134 | { | |
135 | char *pos = param->data; | |
136 | char *del = strchr(pos, ' '); | |
cdcf6723 | 137 | |
a238cf5b TH |
138 | if (del) |
139 | *del++ = '\0'; | |
140 | else | |
141 | del = pos + strlen(pos); | |
142 | param->data = del; | |
143 | return pos; | |
144 | } | |
145 | ||
a2075167 TH |
146 | static bool tomoyo_correct_path2(const char *filename, const size_t len); |
147 | ||
731d37aa TH |
148 | /** |
149 | * tomoyo_get_domainname - Read a domainname from a line. | |
150 | * | |
151 | * @param: Pointer to "struct tomoyo_acl_param". | |
152 | * | |
153 | * Returns a domainname on success, NULL otherwise. | |
154 | */ | |
155 | const struct tomoyo_path_info *tomoyo_get_domainname | |
156 | (struct tomoyo_acl_param *param) | |
157 | { | |
158 | char *start = param->data; | |
159 | char *pos = start; | |
cdcf6723 | 160 | |
731d37aa | 161 | while (*pos) { |
a2075167 TH |
162 | if (*pos++ != ' ' || |
163 | tomoyo_correct_path2(pos, strchrnul(pos, ' ') - pos)) | |
731d37aa | 164 | continue; |
a2075167 | 165 | *(pos - 1) = '\0'; |
731d37aa TH |
166 | break; |
167 | } | |
168 | param->data = pos; | |
169 | if (tomoyo_correct_domain(start)) | |
170 | return tomoyo_get_name(start); | |
171 | return NULL; | |
172 | } | |
173 | ||
c3ef1500 TH |
174 | /** |
175 | * tomoyo_parse_ulong - Parse an "unsigned long" value. | |
176 | * | |
177 | * @result: Pointer to "unsigned long". | |
178 | * @str: Pointer to string to parse. | |
179 | * | |
0df7e8b8 | 180 | * Returns one of values in "enum tomoyo_value_type". |
c3ef1500 TH |
181 | * |
182 | * The @src is updated to point the first character after the value | |
183 | * on success. | |
184 | */ | |
2066a361 | 185 | u8 tomoyo_parse_ulong(unsigned long *result, char **str) |
c3ef1500 TH |
186 | { |
187 | const char *cp = *str; | |
188 | char *ep; | |
189 | int base = 10; | |
cdcf6723 | 190 | |
c3ef1500 TH |
191 | if (*cp == '0') { |
192 | char c = *(cp + 1); | |
cdcf6723 | 193 | |
c3ef1500 TH |
194 | if (c == 'x' || c == 'X') { |
195 | base = 16; | |
196 | cp += 2; | |
197 | } else if (c >= '0' && c <= '7') { | |
198 | base = 8; | |
199 | cp++; | |
200 | } | |
201 | } | |
202 | *result = simple_strtoul(cp, &ep, base); | |
203 | if (cp == ep) | |
0df7e8b8 | 204 | return TOMOYO_VALUE_TYPE_INVALID; |
c3ef1500 TH |
205 | *str = ep; |
206 | switch (base) { | |
207 | case 16: | |
208 | return TOMOYO_VALUE_TYPE_HEXADECIMAL; | |
209 | case 8: | |
210 | return TOMOYO_VALUE_TYPE_OCTAL; | |
211 | default: | |
212 | return TOMOYO_VALUE_TYPE_DECIMAL; | |
213 | } | |
214 | } | |
215 | ||
216 | /** | |
217 | * tomoyo_print_ulong - Print an "unsigned long" value. | |
218 | * | |
219 | * @buffer: Pointer to buffer. | |
220 | * @buffer_len: Size of @buffer. | |
221 | * @value: An "unsigned long" value. | |
222 | * @type: Type of @value. | |
223 | * | |
224 | * Returns nothing. | |
225 | */ | |
226 | void tomoyo_print_ulong(char *buffer, const int buffer_len, | |
227 | const unsigned long value, const u8 type) | |
228 | { | |
229 | if (type == TOMOYO_VALUE_TYPE_DECIMAL) | |
230 | snprintf(buffer, buffer_len, "%lu", value); | |
231 | else if (type == TOMOYO_VALUE_TYPE_OCTAL) | |
232 | snprintf(buffer, buffer_len, "0%lo", value); | |
233 | else if (type == TOMOYO_VALUE_TYPE_HEXADECIMAL) | |
234 | snprintf(buffer, buffer_len, "0x%lX", value); | |
235 | else | |
236 | snprintf(buffer, buffer_len, "type(%u)", type); | |
237 | } | |
238 | ||
239 | /** | |
240 | * tomoyo_parse_name_union - Parse a tomoyo_name_union. | |
241 | * | |
a238cf5b TH |
242 | * @param: Pointer to "struct tomoyo_acl_param". |
243 | * @ptr: Pointer to "struct tomoyo_name_union". | |
c3ef1500 TH |
244 | * |
245 | * Returns true on success, false otherwise. | |
246 | */ | |
a238cf5b | 247 | bool tomoyo_parse_name_union(struct tomoyo_acl_param *param, |
c3ef1500 TH |
248 | struct tomoyo_name_union *ptr) |
249 | { | |
a238cf5b | 250 | char *filename; |
cdcf6723 | 251 | |
a238cf5b TH |
252 | if (param->data[0] == '@') { |
253 | param->data++; | |
254 | ptr->group = tomoyo_get_group(param, TOMOYO_PATH_GROUP); | |
c3ef1500 TH |
255 | return ptr->group != NULL; |
256 | } | |
a238cf5b TH |
257 | filename = tomoyo_read_token(param); |
258 | if (!tomoyo_correct_word(filename)) | |
259 | return false; | |
c3ef1500 | 260 | ptr->filename = tomoyo_get_name(filename); |
c3ef1500 TH |
261 | return ptr->filename != NULL; |
262 | } | |
263 | ||
264 | /** | |
265 | * tomoyo_parse_number_union - Parse a tomoyo_number_union. | |
266 | * | |
a238cf5b TH |
267 | * @param: Pointer to "struct tomoyo_acl_param". |
268 | * @ptr: Pointer to "struct tomoyo_number_union". | |
c3ef1500 TH |
269 | * |
270 | * Returns true on success, false otherwise. | |
271 | */ | |
a238cf5b TH |
272 | bool tomoyo_parse_number_union(struct tomoyo_acl_param *param, |
273 | struct tomoyo_number_union *ptr) | |
c3ef1500 | 274 | { |
a238cf5b | 275 | char *data; |
c3ef1500 TH |
276 | u8 type; |
277 | unsigned long v; | |
cdcf6723 | 278 | |
a238cf5b TH |
279 | memset(ptr, 0, sizeof(*ptr)); |
280 | if (param->data[0] == '@') { | |
281 | param->data++; | |
282 | ptr->group = tomoyo_get_group(param, TOMOYO_NUMBER_GROUP); | |
283 | return ptr->group != NULL; | |
c3ef1500 | 284 | } |
a238cf5b | 285 | data = tomoyo_read_token(param); |
c3ef1500 | 286 | type = tomoyo_parse_ulong(&v, &data); |
a238cf5b | 287 | if (type == TOMOYO_VALUE_TYPE_INVALID) |
c3ef1500 | 288 | return false; |
a238cf5b TH |
289 | ptr->values[0] = v; |
290 | ptr->value_type[0] = type; | |
c3ef1500 | 291 | if (!*data) { |
a238cf5b TH |
292 | ptr->values[1] = v; |
293 | ptr->value_type[1] = type; | |
c3ef1500 TH |
294 | return true; |
295 | } | |
296 | if (*data++ != '-') | |
297 | return false; | |
298 | type = tomoyo_parse_ulong(&v, &data); | |
a238cf5b | 299 | if (type == TOMOYO_VALUE_TYPE_INVALID || *data || ptr->values[0] > v) |
c3ef1500 | 300 | return false; |
a238cf5b TH |
301 | ptr->values[1] = v; |
302 | ptr->value_type[1] = type; | |
c3ef1500 TH |
303 | return true; |
304 | } | |
305 | ||
306 | /** | |
75093152 | 307 | * tomoyo_byte_range - Check whether the string is a \ooo style octal value. |
c3ef1500 TH |
308 | * |
309 | * @str: Pointer to the string. | |
310 | * | |
311 | * Returns true if @str is a \ooo style octal value, false otherwise. | |
312 | * | |
313 | * TOMOYO uses \ooo style representation for 0x01 - 0x20 and 0x7F - 0xFF. | |
314 | * This function verifies that \ooo is in valid range. | |
315 | */ | |
75093152 | 316 | static inline bool tomoyo_byte_range(const char *str) |
c3ef1500 TH |
317 | { |
318 | return *str >= '0' && *str++ <= '3' && | |
319 | *str >= '0' && *str++ <= '7' && | |
320 | *str >= '0' && *str <= '7'; | |
321 | } | |
322 | ||
323 | /** | |
75093152 | 324 | * tomoyo_alphabet_char - Check whether the character is an alphabet. |
c3ef1500 TH |
325 | * |
326 | * @c: The character to check. | |
327 | * | |
328 | * Returns true if @c is an alphabet character, false otherwise. | |
329 | */ | |
75093152 | 330 | static inline bool tomoyo_alphabet_char(const char c) |
c3ef1500 TH |
331 | { |
332 | return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'); | |
333 | } | |
334 | ||
335 | /** | |
336 | * tomoyo_make_byte - Make byte value from three octal characters. | |
337 | * | |
338 | * @c1: The first character. | |
339 | * @c2: The second character. | |
340 | * @c3: The third character. | |
341 | * | |
342 | * Returns byte value. | |
343 | */ | |
344 | static inline u8 tomoyo_make_byte(const u8 c1, const u8 c2, const u8 c3) | |
345 | { | |
346 | return ((c1 - '0') << 6) + ((c2 - '0') << 3) + (c3 - '0'); | |
347 | } | |
348 | ||
0df7e8b8 TH |
349 | /** |
350 | * tomoyo_valid - Check whether the character is a valid char. | |
351 | * | |
352 | * @c: The character to check. | |
353 | * | |
354 | * Returns true if @c is a valid character, false otherwise. | |
355 | */ | |
356 | static inline bool tomoyo_valid(const unsigned char c) | |
357 | { | |
358 | return c > ' ' && c < 127; | |
359 | } | |
360 | ||
361 | /** | |
362 | * tomoyo_invalid - Check whether the character is an invalid char. | |
363 | * | |
364 | * @c: The character to check. | |
365 | * | |
366 | * Returns true if @c is an invalid character, false otherwise. | |
367 | */ | |
368 | static inline bool tomoyo_invalid(const unsigned char c) | |
369 | { | |
370 | return c && (c <= ' ' || c >= 127); | |
371 | } | |
372 | ||
c3ef1500 TH |
373 | /** |
374 | * tomoyo_str_starts - Check whether the given string starts with the given keyword. | |
375 | * | |
376 | * @src: Pointer to pointer to the string. | |
377 | * @find: Pointer to the keyword. | |
378 | * | |
379 | * Returns true if @src starts with @find, false otherwise. | |
380 | * | |
381 | * The @src is updated to point the first character after the @find | |
382 | * if @src starts with @find. | |
383 | */ | |
384 | bool tomoyo_str_starts(char **src, const char *find) | |
385 | { | |
386 | const int len = strlen(find); | |
387 | char *tmp = *src; | |
388 | ||
389 | if (strncmp(tmp, find, len)) | |
390 | return false; | |
391 | tmp += len; | |
392 | *src = tmp; | |
393 | return true; | |
394 | } | |
395 | ||
396 | /** | |
397 | * tomoyo_normalize_line - Format string. | |
398 | * | |
399 | * @buffer: The line to normalize. | |
400 | * | |
401 | * Leading and trailing whitespaces are removed. | |
402 | * Multiple whitespaces are packed into single space. | |
403 | * | |
404 | * Returns nothing. | |
405 | */ | |
406 | void tomoyo_normalize_line(unsigned char *buffer) | |
407 | { | |
408 | unsigned char *sp = buffer; | |
409 | unsigned char *dp = buffer; | |
410 | bool first = true; | |
411 | ||
75093152 | 412 | while (tomoyo_invalid(*sp)) |
c3ef1500 TH |
413 | sp++; |
414 | while (*sp) { | |
415 | if (!first) | |
416 | *dp++ = ' '; | |
417 | first = false; | |
75093152 | 418 | while (tomoyo_valid(*sp)) |
c3ef1500 | 419 | *dp++ = *sp++; |
75093152 | 420 | while (tomoyo_invalid(*sp)) |
c3ef1500 TH |
421 | sp++; |
422 | } | |
423 | *dp = '\0'; | |
424 | } | |
425 | ||
c3ef1500 | 426 | /** |
75093152 | 427 | * tomoyo_correct_word2 - Validate a string. |
c3ef1500 | 428 | * |
0f2a55d5 | 429 | * @string: The string to check. Maybe non-'\0'-terminated. |
3f629636 | 430 | * @len: Length of @string. |
c3ef1500 | 431 | * |
3f629636 TH |
432 | * Check whether the given string follows the naming rules. |
433 | * Returns true if @string follows the naming rules, false otherwise. | |
c3ef1500 | 434 | */ |
75093152 | 435 | static bool tomoyo_correct_word2(const char *string, size_t len) |
c3ef1500 | 436 | { |
e991a40b | 437 | u8 recursion = 20; |
3f629636 | 438 | const char *const start = string; |
c3ef1500 | 439 | bool in_repetition = false; |
cdcf6723 | 440 | |
3f629636 | 441 | if (!len) |
c3ef1500 | 442 | goto out; |
3f629636 | 443 | while (len--) { |
e991a40b TH |
444 | unsigned char c = *string++; |
445 | ||
c3ef1500 | 446 | if (c == '\\') { |
3f629636 TH |
447 | if (!len--) |
448 | goto out; | |
449 | c = *string++; | |
e991a40b TH |
450 | if (c >= '0' && c <= '3') { |
451 | unsigned char d; | |
452 | unsigned char e; | |
453 | ||
454 | if (!len-- || !len--) | |
455 | goto out; | |
456 | d = *string++; | |
457 | e = *string++; | |
458 | if (d < '0' || d > '7' || e < '0' || e > '7') | |
459 | goto out; | |
460 | c = tomoyo_make_byte(c, d, e); | |
461 | if (c <= ' ' || c >= 127) | |
462 | continue; | |
463 | goto out; | |
464 | } | |
c3ef1500 TH |
465 | switch (c) { |
466 | case '\\': /* "\\" */ | |
c3ef1500 TH |
467 | case '+': /* "\+" */ |
468 | case '?': /* "\?" */ | |
e991a40b TH |
469 | case 'x': /* "\x" */ |
470 | case 'a': /* "\a" */ | |
471 | case '-': /* "\-" */ | |
472 | continue; | |
473 | } | |
474 | if (!recursion--) | |
475 | goto out; | |
476 | switch (c) { | |
c3ef1500 TH |
477 | case '*': /* "\*" */ |
478 | case '@': /* "\@" */ | |
e991a40b | 479 | case '$': /* "\$" */ |
c3ef1500 | 480 | case 'X': /* "\X" */ |
c3ef1500 | 481 | case 'A': /* "\A" */ |
c3ef1500 TH |
482 | continue; |
483 | case '{': /* "/\{" */ | |
3f629636 | 484 | if (string - 3 < start || *(string - 3) != '/') |
e991a40b | 485 | goto out; |
c3ef1500 TH |
486 | in_repetition = true; |
487 | continue; | |
488 | case '}': /* "\}/" */ | |
3f629636 | 489 | if (*string != '/') |
e991a40b | 490 | goto out; |
c3ef1500 | 491 | if (!in_repetition) |
e991a40b | 492 | goto out; |
c3ef1500 TH |
493 | in_repetition = false; |
494 | continue; | |
c3ef1500 TH |
495 | } |
496 | goto out; | |
497 | } else if (in_repetition && c == '/') { | |
498 | goto out; | |
25add8cf | 499 | } else if (c <= ' ' || c >= 127) { |
c3ef1500 TH |
500 | goto out; |
501 | } | |
502 | } | |
c3ef1500 TH |
503 | if (in_repetition) |
504 | goto out; | |
505 | return true; | |
506 | out: | |
507 | return false; | |
508 | } | |
509 | ||
3f629636 | 510 | /** |
75093152 | 511 | * tomoyo_correct_word - Validate a string. |
3f629636 TH |
512 | * |
513 | * @string: The string to check. | |
514 | * | |
515 | * Check whether the given string follows the naming rules. | |
516 | * Returns true if @string follows the naming rules, false otherwise. | |
517 | */ | |
75093152 | 518 | bool tomoyo_correct_word(const char *string) |
3f629636 | 519 | { |
75093152 | 520 | return tomoyo_correct_word2(string, strlen(string)); |
3f629636 TH |
521 | } |
522 | ||
a2075167 TH |
523 | /** |
524 | * tomoyo_correct_path2 - Check whether the given pathname follows the naming rules. | |
525 | * | |
526 | * @filename: The pathname to check. | |
527 | * @len: Length of @filename. | |
528 | * | |
529 | * Returns true if @filename follows the naming rules, false otherwise. | |
530 | */ | |
531 | static bool tomoyo_correct_path2(const char *filename, const size_t len) | |
532 | { | |
533 | const char *cp1 = memchr(filename, '/', len); | |
534 | const char *cp2 = memchr(filename, '.', len); | |
535 | ||
536 | return cp1 && (!cp2 || (cp1 < cp2)) && tomoyo_correct_word2(filename, len); | |
537 | } | |
538 | ||
3f629636 | 539 | /** |
75093152 | 540 | * tomoyo_correct_path - Validate a pathname. |
3f629636 TH |
541 | * |
542 | * @filename: The pathname to check. | |
543 | * | |
544 | * Check whether the given pathname follows the naming rules. | |
545 | * Returns true if @filename follows the naming rules, false otherwise. | |
546 | */ | |
75093152 | 547 | bool tomoyo_correct_path(const char *filename) |
3f629636 | 548 | { |
a2075167 | 549 | return tomoyo_correct_path2(filename, strlen(filename)); |
3f629636 TH |
550 | } |
551 | ||
c3ef1500 | 552 | /** |
75093152 | 553 | * tomoyo_correct_domain - Check whether the given domainname follows the naming rules. |
c3ef1500 | 554 | * |
3f629636 | 555 | * @domainname: The domainname to check. |
c3ef1500 TH |
556 | * |
557 | * Returns true if @domainname follows the naming rules, false otherwise. | |
558 | */ | |
75093152 | 559 | bool tomoyo_correct_domain(const unsigned char *domainname) |
c3ef1500 | 560 | { |
bd03a3e4 TH |
561 | if (!domainname || !tomoyo_domain_def(domainname)) |
562 | return false; | |
563 | domainname = strchr(domainname, ' '); | |
564 | if (!domainname++) | |
c3ef1500 | 565 | return true; |
3f629636 TH |
566 | while (1) { |
567 | const unsigned char *cp = strchr(domainname, ' '); | |
cdcf6723 | 568 | |
3f629636 TH |
569 | if (!cp) |
570 | break; | |
a2075167 | 571 | if (!tomoyo_correct_path2(domainname, cp - domainname)) |
bd03a3e4 | 572 | return false; |
3f629636 TH |
573 | domainname = cp + 1; |
574 | } | |
75093152 | 575 | return tomoyo_correct_path(domainname); |
c3ef1500 TH |
576 | } |
577 | ||
578 | /** | |
75093152 | 579 | * tomoyo_domain_def - Check whether the given token can be a domainname. |
c3ef1500 TH |
580 | * |
581 | * @buffer: The token to check. | |
582 | * | |
583 | * Returns true if @buffer possibly be a domainname, false otherwise. | |
584 | */ | |
75093152 | 585 | bool tomoyo_domain_def(const unsigned char *buffer) |
c3ef1500 | 586 | { |
bd03a3e4 TH |
587 | const unsigned char *cp; |
588 | int len; | |
cdcf6723 | 589 | |
bd03a3e4 TH |
590 | if (*buffer != '<') |
591 | return false; | |
592 | cp = strchr(buffer, ' '); | |
593 | if (!cp) | |
594 | len = strlen(buffer); | |
595 | else | |
596 | len = cp - buffer; | |
597 | if (buffer[len - 1] != '>' || | |
598 | !tomoyo_correct_word2(buffer + 1, len - 2)) | |
599 | return false; | |
600 | return true; | |
c3ef1500 TH |
601 | } |
602 | ||
603 | /** | |
604 | * tomoyo_find_domain - Find a domain by the given name. | |
605 | * | |
606 | * @domainname: The domainname to find. | |
607 | * | |
608 | * Returns pointer to "struct tomoyo_domain_info" if found, NULL otherwise. | |
609 | * | |
610 | * Caller holds tomoyo_read_lock(). | |
611 | */ | |
612 | struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname) | |
613 | { | |
614 | struct tomoyo_domain_info *domain; | |
615 | struct tomoyo_path_info name; | |
616 | ||
617 | name.name = domainname; | |
618 | tomoyo_fill_path_info(&name); | |
6bd5ce60 TH |
619 | list_for_each_entry_rcu(domain, &tomoyo_domain_list, list, |
620 | srcu_read_lock_held(&tomoyo_ss)) { | |
c3ef1500 TH |
621 | if (!domain->is_deleted && |
622 | !tomoyo_pathcmp(&name, domain->domainname)) | |
623 | return domain; | |
624 | } | |
625 | return NULL; | |
626 | } | |
627 | ||
628 | /** | |
629 | * tomoyo_const_part_length - Evaluate the initial length without a pattern in a token. | |
630 | * | |
631 | * @filename: The string to evaluate. | |
632 | * | |
633 | * Returns the initial length without a pattern in @filename. | |
634 | */ | |
635 | static int tomoyo_const_part_length(const char *filename) | |
636 | { | |
637 | char c; | |
638 | int len = 0; | |
639 | ||
640 | if (!filename) | |
641 | return 0; | |
642 | while ((c = *filename++) != '\0') { | |
643 | if (c != '\\') { | |
644 | len++; | |
645 | continue; | |
646 | } | |
647 | c = *filename++; | |
648 | switch (c) { | |
649 | case '\\': /* "\\" */ | |
650 | len += 2; | |
651 | continue; | |
652 | case '0': /* "\ooo" */ | |
653 | case '1': | |
654 | case '2': | |
655 | case '3': | |
656 | c = *filename++; | |
657 | if (c < '0' || c > '7') | |
658 | break; | |
659 | c = *filename++; | |
660 | if (c < '0' || c > '7') | |
661 | break; | |
662 | len += 4; | |
663 | continue; | |
664 | } | |
665 | break; | |
666 | } | |
667 | return len; | |
668 | } | |
669 | ||
670 | /** | |
671 | * tomoyo_fill_path_info - Fill in "struct tomoyo_path_info" members. | |
672 | * | |
673 | * @ptr: Pointer to "struct tomoyo_path_info" to fill in. | |
674 | * | |
675 | * The caller sets "struct tomoyo_path_info"->name. | |
676 | */ | |
677 | void tomoyo_fill_path_info(struct tomoyo_path_info *ptr) | |
678 | { | |
679 | const char *name = ptr->name; | |
680 | const int len = strlen(name); | |
681 | ||
682 | ptr->const_len = tomoyo_const_part_length(name); | |
683 | ptr->is_dir = len && (name[len - 1] == '/'); | |
684 | ptr->is_patterned = (ptr->const_len < len); | |
8387ff25 | 685 | ptr->hash = full_name_hash(NULL, name, len); |
c3ef1500 TH |
686 | } |
687 | ||
688 | /** | |
689 | * tomoyo_file_matches_pattern2 - Pattern matching without '/' character and "\-" pattern. | |
690 | * | |
691 | * @filename: The start of string to check. | |
692 | * @filename_end: The end of string to check. | |
693 | * @pattern: The start of pattern to compare. | |
694 | * @pattern_end: The end of pattern to compare. | |
695 | * | |
696 | * Returns true if @filename matches @pattern, false otherwise. | |
697 | */ | |
698 | static bool tomoyo_file_matches_pattern2(const char *filename, | |
699 | const char *filename_end, | |
700 | const char *pattern, | |
701 | const char *pattern_end) | |
702 | { | |
703 | while (filename < filename_end && pattern < pattern_end) { | |
704 | char c; | |
cdcf6723 TH |
705 | int i; |
706 | int j; | |
707 | ||
c3ef1500 TH |
708 | if (*pattern != '\\') { |
709 | if (*filename++ != *pattern++) | |
710 | return false; | |
711 | continue; | |
712 | } | |
713 | c = *filename; | |
714 | pattern++; | |
715 | switch (*pattern) { | |
c3ef1500 TH |
716 | case '?': |
717 | if (c == '/') { | |
718 | return false; | |
719 | } else if (c == '\\') { | |
720 | if (filename[1] == '\\') | |
721 | filename++; | |
75093152 | 722 | else if (tomoyo_byte_range(filename + 1)) |
c3ef1500 TH |
723 | filename += 3; |
724 | else | |
725 | return false; | |
726 | } | |
727 | break; | |
728 | case '\\': | |
729 | if (c != '\\') | |
730 | return false; | |
731 | if (*++filename != '\\') | |
732 | return false; | |
733 | break; | |
734 | case '+': | |
735 | if (!isdigit(c)) | |
736 | return false; | |
737 | break; | |
738 | case 'x': | |
739 | if (!isxdigit(c)) | |
740 | return false; | |
741 | break; | |
742 | case 'a': | |
75093152 | 743 | if (!tomoyo_alphabet_char(c)) |
c3ef1500 TH |
744 | return false; |
745 | break; | |
746 | case '0': | |
747 | case '1': | |
748 | case '2': | |
749 | case '3': | |
75093152 | 750 | if (c == '\\' && tomoyo_byte_range(filename + 1) |
c3ef1500 TH |
751 | && strncmp(filename + 1, pattern, 3) == 0) { |
752 | filename += 3; | |
753 | pattern += 2; | |
754 | break; | |
755 | } | |
756 | return false; /* Not matched. */ | |
757 | case '*': | |
758 | case '@': | |
759 | for (i = 0; i <= filename_end - filename; i++) { | |
760 | if (tomoyo_file_matches_pattern2( | |
761 | filename + i, filename_end, | |
762 | pattern + 1, pattern_end)) | |
763 | return true; | |
764 | c = filename[i]; | |
765 | if (c == '.' && *pattern == '@') | |
766 | break; | |
767 | if (c != '\\') | |
768 | continue; | |
769 | if (filename[i + 1] == '\\') | |
770 | i++; | |
75093152 | 771 | else if (tomoyo_byte_range(filename + i + 1)) |
c3ef1500 TH |
772 | i += 3; |
773 | else | |
774 | break; /* Bad pattern. */ | |
775 | } | |
776 | return false; /* Not matched. */ | |
777 | default: | |
778 | j = 0; | |
779 | c = *pattern; | |
780 | if (c == '$') { | |
781 | while (isdigit(filename[j])) | |
782 | j++; | |
783 | } else if (c == 'X') { | |
784 | while (isxdigit(filename[j])) | |
785 | j++; | |
786 | } else if (c == 'A') { | |
75093152 | 787 | while (tomoyo_alphabet_char(filename[j])) |
c3ef1500 TH |
788 | j++; |
789 | } | |
790 | for (i = 1; i <= j; i++) { | |
791 | if (tomoyo_file_matches_pattern2( | |
792 | filename + i, filename_end, | |
793 | pattern + 1, pattern_end)) | |
794 | return true; | |
795 | } | |
796 | return false; /* Not matched or bad pattern. */ | |
797 | } | |
798 | filename++; | |
799 | pattern++; | |
800 | } | |
801 | while (*pattern == '\\' && | |
802 | (*(pattern + 1) == '*' || *(pattern + 1) == '@')) | |
803 | pattern += 2; | |
804 | return filename == filename_end && pattern == pattern_end; | |
805 | } | |
806 | ||
807 | /** | |
808 | * tomoyo_file_matches_pattern - Pattern matching without '/' character. | |
809 | * | |
810 | * @filename: The start of string to check. | |
811 | * @filename_end: The end of string to check. | |
812 | * @pattern: The start of pattern to compare. | |
813 | * @pattern_end: The end of pattern to compare. | |
814 | * | |
815 | * Returns true if @filename matches @pattern, false otherwise. | |
816 | */ | |
817 | static bool tomoyo_file_matches_pattern(const char *filename, | |
818 | const char *filename_end, | |
819 | const char *pattern, | |
820 | const char *pattern_end) | |
821 | { | |
822 | const char *pattern_start = pattern; | |
823 | bool first = true; | |
824 | bool result; | |
825 | ||
826 | while (pattern < pattern_end - 1) { | |
827 | /* Split at "\-" pattern. */ | |
828 | if (*pattern++ != '\\' || *pattern++ != '-') | |
829 | continue; | |
830 | result = tomoyo_file_matches_pattern2(filename, | |
831 | filename_end, | |
832 | pattern_start, | |
833 | pattern - 2); | |
834 | if (first) | |
835 | result = !result; | |
836 | if (result) | |
837 | return false; | |
838 | first = false; | |
839 | pattern_start = pattern; | |
840 | } | |
841 | result = tomoyo_file_matches_pattern2(filename, filename_end, | |
842 | pattern_start, pattern_end); | |
843 | return first ? result : !result; | |
844 | } | |
845 | ||
846 | /** | |
847 | * tomoyo_path_matches_pattern2 - Do pathname pattern matching. | |
848 | * | |
849 | * @f: The start of string to check. | |
850 | * @p: The start of pattern to compare. | |
851 | * | |
852 | * Returns true if @f matches @p, false otherwise. | |
853 | */ | |
854 | static bool tomoyo_path_matches_pattern2(const char *f, const char *p) | |
855 | { | |
856 | const char *f_delimiter; | |
857 | const char *p_delimiter; | |
858 | ||
859 | while (*f && *p) { | |
860 | f_delimiter = strchr(f, '/'); | |
861 | if (!f_delimiter) | |
862 | f_delimiter = f + strlen(f); | |
863 | p_delimiter = strchr(p, '/'); | |
864 | if (!p_delimiter) | |
865 | p_delimiter = p + strlen(p); | |
866 | if (*p == '\\' && *(p + 1) == '{') | |
867 | goto recursive; | |
868 | if (!tomoyo_file_matches_pattern(f, f_delimiter, p, | |
869 | p_delimiter)) | |
870 | return false; | |
871 | f = f_delimiter; | |
872 | if (*f) | |
873 | f++; | |
874 | p = p_delimiter; | |
875 | if (*p) | |
876 | p++; | |
877 | } | |
878 | /* Ignore trailing "\*" and "\@" in @pattern. */ | |
879 | while (*p == '\\' && | |
880 | (*(p + 1) == '*' || *(p + 1) == '@')) | |
881 | p += 2; | |
882 | return !*f && !*p; | |
883 | recursive: | |
884 | /* | |
885 | * The "\{" pattern is permitted only after '/' character. | |
886 | * This guarantees that below "*(p - 1)" is safe. | |
887 | * Also, the "\}" pattern is permitted only before '/' character | |
888 | * so that "\{" + "\}" pair will not break the "\-" operator. | |
889 | */ | |
890 | if (*(p - 1) != '/' || p_delimiter <= p + 3 || *p_delimiter != '/' || | |
891 | *(p_delimiter - 1) != '}' || *(p_delimiter - 2) != '\\') | |
892 | return false; /* Bad pattern. */ | |
893 | do { | |
894 | /* Compare current component with pattern. */ | |
895 | if (!tomoyo_file_matches_pattern(f, f_delimiter, p + 2, | |
896 | p_delimiter - 2)) | |
897 | break; | |
898 | /* Proceed to next component. */ | |
899 | f = f_delimiter; | |
900 | if (!*f) | |
901 | break; | |
902 | f++; | |
903 | /* Continue comparison. */ | |
904 | if (tomoyo_path_matches_pattern2(f, p_delimiter + 1)) | |
905 | return true; | |
906 | f_delimiter = strchr(f, '/'); | |
907 | } while (f_delimiter); | |
908 | return false; /* Not matched. */ | |
909 | } | |
910 | ||
911 | /** | |
912 | * tomoyo_path_matches_pattern - Check whether the given filename matches the given pattern. | |
913 | * | |
914 | * @filename: The filename to check. | |
915 | * @pattern: The pattern to compare. | |
916 | * | |
917 | * Returns true if matches, false otherwise. | |
918 | * | |
919 | * The following patterns are available. | |
920 | * \\ \ itself. | |
921 | * \ooo Octal representation of a byte. | |
922 | * \* Zero or more repetitions of characters other than '/'. | |
923 | * \@ Zero or more repetitions of characters other than '/' or '.'. | |
924 | * \? 1 byte character other than '/'. | |
925 | * \$ One or more repetitions of decimal digits. | |
926 | * \+ 1 decimal digit. | |
927 | * \X One or more repetitions of hexadecimal digits. | |
928 | * \x 1 hexadecimal digit. | |
929 | * \A One or more repetitions of alphabet characters. | |
930 | * \a 1 alphabet character. | |
931 | * | |
932 | * \- Subtraction operator. | |
933 | * | |
934 | * /\{dir\}/ '/' + 'One or more repetitions of dir/' (e.g. /dir/ /dir/dir/ | |
935 | * /dir/dir/dir/ ). | |
936 | */ | |
937 | bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename, | |
938 | const struct tomoyo_path_info *pattern) | |
939 | { | |
940 | const char *f = filename->name; | |
941 | const char *p = pattern->name; | |
942 | const int len = pattern->const_len; | |
943 | ||
944 | /* If @pattern doesn't contain pattern, I can use strcmp(). */ | |
945 | if (!pattern->is_patterned) | |
946 | return !tomoyo_pathcmp(filename, pattern); | |
947 | /* Don't compare directory and non-directory. */ | |
948 | if (filename->is_dir != pattern->is_dir) | |
949 | return false; | |
950 | /* Compare the initial length without patterns. */ | |
951 | if (strncmp(f, p, len)) | |
952 | return false; | |
953 | f += len; | |
954 | p += len; | |
955 | return tomoyo_path_matches_pattern2(f, p); | |
956 | } | |
957 | ||
958 | /** | |
959 | * tomoyo_get_exe - Get tomoyo_realpath() of current process. | |
960 | * | |
961 | * Returns the tomoyo_realpath() of current process on success, NULL otherwise. | |
962 | * | |
963 | * This function uses kzalloc(), so the caller must call kfree() | |
964 | * if this function didn't return NULL. | |
965 | */ | |
966 | const char *tomoyo_get_exe(void) | |
967 | { | |
d4144ea6 DB |
968 | struct file *exe_file; |
969 | const char *cp; | |
c3ef1500 | 970 | struct mm_struct *mm = current->mm; |
c3ef1500 TH |
971 | |
972 | if (!mm) | |
973 | return NULL; | |
d4144ea6 DB |
974 | exe_file = get_mm_exe_file(mm); |
975 | if (!exe_file) | |
976 | return NULL; | |
977 | ||
978 | cp = tomoyo_realpath_from_path(&exe_file->f_path); | |
979 | fput(exe_file); | |
c3ef1500 TH |
980 | return cp; |
981 | } | |
982 | ||
57c2590f TH |
983 | /** |
984 | * tomoyo_get_mode - Get MAC mode. | |
985 | * | |
bd03a3e4 | 986 | * @ns: Pointer to "struct tomoyo_policy_namespace". |
57c2590f TH |
987 | * @profile: Profile number. |
988 | * @index: Index number of functionality. | |
989 | * | |
990 | * Returns mode. | |
991 | */ | |
bd03a3e4 TH |
992 | int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile, |
993 | const u8 index) | |
57c2590f TH |
994 | { |
995 | u8 mode; | |
d58e0da8 TH |
996 | struct tomoyo_profile *p; |
997 | ||
57c2590f TH |
998 | if (!tomoyo_policy_loaded) |
999 | return TOMOYO_CONFIG_DISABLED; | |
d58e0da8 TH |
1000 | p = tomoyo_profile(ns, profile); |
1001 | mode = p->config[index]; | |
57c2590f | 1002 | if (mode == TOMOYO_CONFIG_USE_DEFAULT) |
d58e0da8 TH |
1003 | mode = p->config[tomoyo_index2category[index] |
1004 | + TOMOYO_MAX_MAC_INDEX]; | |
57c2590f | 1005 | if (mode == TOMOYO_CONFIG_USE_DEFAULT) |
d58e0da8 | 1006 | mode = p->default_config; |
57c2590f TH |
1007 | return mode & 3; |
1008 | } | |
1009 | ||
c3ef1500 TH |
1010 | /** |
1011 | * tomoyo_init_request_info - Initialize "struct tomoyo_request_info" members. | |
1012 | * | |
1013 | * @r: Pointer to "struct tomoyo_request_info" to initialize. | |
1014 | * @domain: Pointer to "struct tomoyo_domain_info". NULL for tomoyo_domain(). | |
57c2590f | 1015 | * @index: Index number of functionality. |
c3ef1500 TH |
1016 | * |
1017 | * Returns mode. | |
1018 | */ | |
1019 | int tomoyo_init_request_info(struct tomoyo_request_info *r, | |
57c2590f | 1020 | struct tomoyo_domain_info *domain, const u8 index) |
c3ef1500 | 1021 | { |
57c2590f | 1022 | u8 profile; |
cdcf6723 | 1023 | |
c3ef1500 TH |
1024 | memset(r, 0, sizeof(*r)); |
1025 | if (!domain) | |
1026 | domain = tomoyo_domain(); | |
1027 | r->domain = domain; | |
57c2590f TH |
1028 | profile = domain->profile; |
1029 | r->profile = profile; | |
1030 | r->type = index; | |
bd03a3e4 | 1031 | r->mode = tomoyo_get_mode(domain->ns, profile, index); |
c3ef1500 TH |
1032 | return r->mode; |
1033 | } | |
1034 | ||
c3ef1500 TH |
1035 | /** |
1036 | * tomoyo_domain_quota_is_ok - Check for domain's quota. | |
1037 | * | |
1038 | * @r: Pointer to "struct tomoyo_request_info". | |
1039 | * | |
1040 | * Returns true if the domain is not exceeded quota, false otherwise. | |
1041 | * | |
1042 | * Caller holds tomoyo_read_lock(). | |
1043 | */ | |
1044 | bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r) | |
1045 | { | |
1046 | unsigned int count = 0; | |
1047 | struct tomoyo_domain_info *domain = r->domain; | |
1048 | struct tomoyo_acl_info *ptr; | |
1049 | ||
1050 | if (r->mode != TOMOYO_CONFIG_LEARNING) | |
1051 | return false; | |
1052 | if (!domain) | |
1053 | return true; | |
04e57a2d DV |
1054 | if (READ_ONCE(domain->flags[TOMOYO_DIF_QUOTA_WARNED])) |
1055 | return false; | |
6bd5ce60 TH |
1056 | list_for_each_entry_rcu(ptr, &domain->acl_info_list, list, |
1057 | srcu_read_lock_held(&tomoyo_ss)) { | |
7c75964f | 1058 | u16 perm; |
cdcf6723 | 1059 | |
7e3d199a | 1060 | if (ptr->is_deleted) |
237ab459 | 1061 | continue; |
5797e861 TH |
1062 | /* |
1063 | * Reading perm bitmap might race with tomoyo_merge_*() because | |
1064 | * caller does not hold tomoyo_policy_lock mutex. But exceeding | |
1065 | * max_learning_entry parameter by a few entries does not harm. | |
1066 | */ | |
c3ef1500 | 1067 | switch (ptr->type) { |
c3ef1500 | 1068 | case TOMOYO_TYPE_PATH_ACL: |
f702e110 | 1069 | perm = data_race(container_of(ptr, struct tomoyo_path_acl, head)->perm); |
c3ef1500 TH |
1070 | break; |
1071 | case TOMOYO_TYPE_PATH2_ACL: | |
f702e110 | 1072 | perm = data_race(container_of(ptr, struct tomoyo_path2_acl, head)->perm); |
c3ef1500 TH |
1073 | break; |
1074 | case TOMOYO_TYPE_PATH_NUMBER_ACL: | |
f702e110 | 1075 | perm = data_race(container_of(ptr, struct tomoyo_path_number_acl, head) |
5797e861 | 1076 | ->perm); |
c3ef1500 | 1077 | break; |
75093152 | 1078 | case TOMOYO_TYPE_MKDEV_ACL: |
f702e110 | 1079 | perm = data_race(container_of(ptr, struct tomoyo_mkdev_acl, head)->perm); |
c3ef1500 | 1080 | break; |
545a7260 | 1081 | case TOMOYO_TYPE_INET_ACL: |
f702e110 | 1082 | perm = data_race(container_of(ptr, struct tomoyo_inet_acl, head)->perm); |
545a7260 TH |
1083 | break; |
1084 | case TOMOYO_TYPE_UNIX_ACL: | |
f702e110 | 1085 | perm = data_race(container_of(ptr, struct tomoyo_unix_acl, head)->perm); |
545a7260 TH |
1086 | break; |
1087 | case TOMOYO_TYPE_MANUAL_TASK_ACL: | |
1088 | perm = 0; | |
1089 | break; | |
237ab459 | 1090 | default: |
7c75964f | 1091 | perm = 1; |
c3ef1500 | 1092 | } |
f702e110 | 1093 | count += hweight16(perm); |
c3ef1500 | 1094 | } |
bd03a3e4 | 1095 | if (count < tomoyo_profile(domain->ns, domain->profile)-> |
d5ca1725 | 1096 | pref[TOMOYO_PREF_MAX_LEARNING_ENTRY]) |
c3ef1500 | 1097 | return true; |
04e57a2d DV |
1098 | WRITE_ONCE(domain->flags[TOMOYO_DIF_QUOTA_WARNED], true); |
1099 | /* r->granted = false; */ | |
1100 | tomoyo_write_log(r, "%s", tomoyo_dif[TOMOYO_DIF_QUOTA_WARNED]); | |
4ad98ac4 | 1101 | #ifndef CONFIG_SECURITY_TOMOYO_INSECURE_BUILTIN_SETTING |
04e57a2d DV |
1102 | pr_warn("WARNING: Domain '%s' has too many ACLs to hold. Stopped learning mode.\n", |
1103 | domain->domainname->name); | |
4ad98ac4 | 1104 | #endif |
c3ef1500 TH |
1105 | return false; |
1106 | } |