| 1 | |
| 2 | |
| 3 | * security/tomoyo/util.c
|
| 4 | *
|
| 5 | * Copyright (C) 2005-2011 NTT DATA CORPORATION
|
| 6 |
|
| 7 |
|
| 8 | #include <linux/slab.h>
|
| 9 | #include <linux/rculist.h>
|
| 10 |
|
| 11 | #include "common.h"
|
| 12 |
|
| 13 |
|
| 14 | DEFINE_MUTEX(tomoyo_policy_lock);
|
| 15 |
|
| 16 |
|
| 17 | bool tomoyo_policy_loaded;
|
| 18 |
|
| 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 |
|
| 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,
|
| 48 |
|
| 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,
|
| 79 |
|
| 80 | [TOMOYO_MAC_ENVIRON] = TOMOYO_MAC_CATEGORY_MISC,
|
| 81 | };
|
| 82 |
|
| 83 | |
| 84 | * tomoyo_convert_time - Convert time_t to YYYY/MM/DD hh/mm/ss.
|
| 85 | *
|
| 86 | * @time64: Seconds since 1970/01/01 00:00:00.
|
| 87 | * @stamp: Pointer to "struct tomoyo_time".
|
| 88 | *
|
| 89 | * Returns nothing.
|
| 90 |
|
| 91 | void tomoyo_convert_time(time64_t time64, struct tomoyo_time *stamp)
|
| 92 | {
|
| 93 | struct tm tm;
|
| 94 |
|
| 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;
|
| 102 | }
|
| 103 |
|
| 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 | *
|
| 110 | * Returns true if @keyword was found in @string, false otherwise.
|
| 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);
|
| 117 |
|
| 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, ' ');
|
| 137 |
|
| 138 | if (del)
|
| 139 | *del++ = '\0';
|
| 140 | else
|
| 141 | del = pos + strlen(pos);
|
| 142 | param->data = del;
|
| 143 | return pos;
|
| 144 | }
|
| 145 |
|
| 146 | static bool tomoyo_correct_path2(const char *filename, const size_t len);
|
| 147 |
|
| 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;
|
| 160 |
|
| 161 | while (*pos) {
|
| 162 | if (*pos++ != ' ' ||
|
| 163 | tomoyo_correct_path2(pos, strchrnul(pos, ' ') - pos))
|
| 164 | continue;
|
| 165 | *(pos - 1) = '\0';
|
| 166 | break;
|
| 167 | }
|
| 168 | param->data = pos;
|
| 169 | if (tomoyo_correct_domain(start))
|
| 170 | return tomoyo_get_name(start);
|
| 171 | return NULL;
|
| 172 | }
|
| 173 |
|
| 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 | *
|
| 180 | * Returns one of values in "enum tomoyo_value_type".
|
| 181 | *
|
| 182 | * The @src is updated to point the first character after the value
|
| 183 | * on success.
|
| 184 |
|
| 185 | u8 tomoyo_parse_ulong(unsigned long *result, char **str)
|
| 186 | {
|
| 187 | const char *cp = *str;
|
| 188 | char *ep;
|
| 189 | int base = 10;
|
| 190 |
|
| 191 | if (*cp == '0') {
|
| 192 | char c = *(cp + 1);
|
| 193 |
|
| 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)
|
| 204 | return TOMOYO_VALUE_TYPE_INVALID;
|
| 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 | *
|
| 242 | * @param: Pointer to "struct tomoyo_acl_param".
|
| 243 | * @ptr: Pointer to "struct tomoyo_name_union".
|
| 244 | *
|
| 245 | * Returns true on success, false otherwise.
|
| 246 |
|
| 247 | bool tomoyo_parse_name_union(struct tomoyo_acl_param *param,
|
| 248 | struct tomoyo_name_union *ptr)
|
| 249 | {
|
| 250 | char *filename;
|
| 251 |
|
| 252 | if (param->data[0] == '@') {
|
| 253 | param->data++;
|
| 254 | ptr->group = tomoyo_get_group(param, TOMOYO_PATH_GROUP);
|
| 255 | return ptr->group != NULL;
|
| 256 | }
|
| 257 | filename = tomoyo_read_token(param);
|
| 258 | if (!tomoyo_correct_word(filename))
|
| 259 | return false;
|
| 260 | ptr->filename = tomoyo_get_name(filename);
|
| 261 | return ptr->filename != NULL;
|
| 262 | }
|
| 263 |
|
| 264 | |
| 265 | * tomoyo_parse_number_union - Parse a tomoyo_number_union.
|
| 266 | *
|
| 267 | * @param: Pointer to "struct tomoyo_acl_param".
|
| 268 | * @ptr: Pointer to "struct tomoyo_number_union".
|
| 269 | *
|
| 270 | * Returns true on success, false otherwise.
|
| 271 |
|
| 272 | bool tomoyo_parse_number_union(struct tomoyo_acl_param *param,
|
| 273 | struct tomoyo_number_union *ptr)
|
| 274 | {
|
| 275 | char *data;
|
| 276 | u8 type;
|
| 277 | unsigned long v;
|
| 278 |
|
| 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;
|
| 284 | }
|
| 285 | data = tomoyo_read_token(param);
|
| 286 | type = tomoyo_parse_ulong(&v, &data);
|
| 287 | if (type == TOMOYO_VALUE_TYPE_INVALID)
|
| 288 | return false;
|
| 289 | ptr->values[0] = v;
|
| 290 | ptr->value_type[0] = type;
|
| 291 | if (!*data) {
|
| 292 | ptr->values[1] = v;
|
| 293 | ptr->value_type[1] = type;
|
| 294 | return true;
|
| 295 | }
|
| 296 | if (*data++ != '-')
|
| 297 | return false;
|
| 298 | type = tomoyo_parse_ulong(&v, &data);
|
| 299 | if (type == TOMOYO_VALUE_TYPE_INVALID || *data || ptr->values[0] > v)
|
| 300 | return false;
|
| 301 | ptr->values[1] = v;
|
| 302 | ptr->value_type[1] = type;
|
| 303 | return true;
|
| 304 | }
|
| 305 |
|
| 306 | |
| 307 | * tomoyo_byte_range - Check whether the string is a \ooo style octal value.
|
| 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 |
|
| 316 | static inline bool tomoyo_byte_range(const char *str)
|
| 317 | {
|
| 318 | return *str >= '0' && *str++ <= '3' &&
|
| 319 | *str >= '0' && *str++ <= '7' &&
|
| 320 | *str >= '0' && *str <= '7';
|
| 321 | }
|
| 322 |
|
| 323 | |
| 324 | * tomoyo_alphabet_char - Check whether the character is an alphabet.
|
| 325 | *
|
| 326 | * @c: The character to check.
|
| 327 | *
|
| 328 | * Returns true if @c is an alphabet character, false otherwise.
|
| 329 |
|
| 330 | static inline bool tomoyo_alphabet_char(const char c)
|
| 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 |
|
| 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 |
|
| 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 |
|
| 412 | while (tomoyo_invalid(*sp))
|
| 413 | sp++;
|
| 414 | while (*sp) {
|
| 415 | if (!first)
|
| 416 | *dp++ = ' ';
|
| 417 | first = false;
|
| 418 | while (tomoyo_valid(*sp))
|
| 419 | *dp++ = *sp++;
|
| 420 | while (tomoyo_invalid(*sp))
|
| 421 | sp++;
|
| 422 | }
|
| 423 | *dp = '\0';
|
| 424 | }
|
| 425 |
|
| 426 | |
| 427 | * tomoyo_correct_word2 - Validate a string.
|
| 428 | *
|
| 429 | * @string: The string to check. Maybe non-'\0'-terminated.
|
| 430 | * @len: Length of @string.
|
| 431 | *
|
| 432 | * Check whether the given string follows the naming rules.
|
| 433 | * Returns true if @string follows the naming rules, false otherwise.
|
| 434 |
|
| 435 | static bool tomoyo_correct_word2(const char *string, size_t len)
|
| 436 | {
|
| 437 | u8 recursion = 20;
|
| 438 | const char *const start = string;
|
| 439 | bool in_repetition = false;
|
| 440 |
|
| 441 | if (!len)
|
| 442 | goto out;
|
| 443 | while (len--) {
|
| 444 | unsigned char c = *string++;
|
| 445 |
|
| 446 | if (c == '\\') {
|
| 447 | if (!len--)
|
| 448 | goto out;
|
| 449 | c = *string++;
|
| 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 | }
|
| 465 | switch (c) {
|
| 466 | case '\\':
|
| 467 | case '+':
|
| 468 | case '?':
|
| 469 | case 'x':
|
| 470 | case 'a':
|
| 471 | case '-':
|
| 472 | continue;
|
| 473 | }
|
| 474 | if (!recursion--)
|
| 475 | goto out;
|
| 476 | switch (c) {
|
| 477 | case '*':
|
| 478 | case '@':
|
| 479 | case '$':
|
| 480 | case 'X':
|
| 481 | case 'A':
|
| 482 | continue;
|
| 483 | case '{':
|
| 484 | if (string - 3 < start || *(string - 3) != '/')
|
| 485 | goto out;
|
| 486 | in_repetition = true;
|
| 487 | continue;
|
| 488 | case '}':
|
| 489 | if (*string != '/')
|
| 490 | goto out;
|
| 491 | if (!in_repetition)
|
| 492 | goto out;
|
| 493 | in_repetition = false;
|
| 494 | continue;
|
| 495 | }
|
| 496 | goto out;
|
| 497 | } else if (in_repetition && c == '/') {
|
| 498 | goto out;
|
| 499 | } else if (c <= ' ' || c >= 127) {
|
| 500 | goto out;
|
| 501 | }
|
| 502 | }
|
| 503 | if (in_repetition)
|
| 504 | goto out;
|
| 505 | return true;
|
| 506 | out:
|
| 507 | return false;
|
| 508 | }
|
| 509 |
|
| 510 | |
| 511 | * tomoyo_correct_word - Validate a string.
|
| 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 |
|
| 518 | bool tomoyo_correct_word(const char *string)
|
| 519 | {
|
| 520 | return tomoyo_correct_word2(string, strlen(string));
|
| 521 | }
|
| 522 |
|
| 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 |
|
| 539 | |
| 540 | * tomoyo_correct_path - Validate a pathname.
|
| 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 |
|
| 547 | bool tomoyo_correct_path(const char *filename)
|
| 548 | {
|
| 549 | return tomoyo_correct_path2(filename, strlen(filename));
|
| 550 | }
|
| 551 |
|
| 552 | |
| 553 | * tomoyo_correct_domain - Check whether the given domainname follows the naming rules.
|
| 554 | *
|
| 555 | * @domainname: The domainname to check.
|
| 556 | *
|
| 557 | * Returns true if @domainname follows the naming rules, false otherwise.
|
| 558 |
|
| 559 | bool tomoyo_correct_domain(const unsigned char *domainname)
|
| 560 | {
|
| 561 | if (!domainname || !tomoyo_domain_def(domainname))
|
| 562 | return false;
|
| 563 | domainname = strchr(domainname, ' ');
|
| 564 | if (!domainname++)
|
| 565 | return true;
|
| 566 | while (1) {
|
| 567 | const unsigned char *cp = strchr(domainname, ' ');
|
| 568 |
|
| 569 | if (!cp)
|
| 570 | break;
|
| 571 | if (!tomoyo_correct_path2(domainname, cp - domainname))
|
| 572 | return false;
|
| 573 | domainname = cp + 1;
|
| 574 | }
|
| 575 | return tomoyo_correct_path(domainname);
|
| 576 | }
|
| 577 |
|
| 578 | |
| 579 | * tomoyo_domain_def - Check whether the given token can be a domainname.
|
| 580 | *
|
| 581 | * @buffer: The token to check.
|
| 582 | *
|
| 583 | * Returns true if @buffer possibly be a domainname, false otherwise.
|
| 584 |
|
| 585 | bool tomoyo_domain_def(const unsigned char *buffer)
|
| 586 | {
|
| 587 | const unsigned char *cp;
|
| 588 | int len;
|
| 589 |
|
| 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;
|
| 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);
|
| 619 | list_for_each_entry_rcu(domain, &tomoyo_domain_list, list,
|
| 620 | srcu_read_lock_held(&tomoyo_ss)) {
|
| 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':
|
| 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);
|
| 685 | ptr->hash = full_name_hash(NULL, name, len);
|
| 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;
|
| 705 | int i;
|
| 706 | int j;
|
| 707 |
|
| 708 | if (*pattern != '\\') {
|
| 709 | if (*filename++ != *pattern++)
|
| 710 | return false;
|
| 711 | continue;
|
| 712 | }
|
| 713 | c = *filename;
|
| 714 | pattern++;
|
| 715 | switch (*pattern) {
|
| 716 | case '?':
|
| 717 | if (c == '/') {
|
| 718 | return false;
|
| 719 | } else if (c == '\\') {
|
| 720 | if (filename[1] == '\\')
|
| 721 | filename++;
|
| 722 | else if (tomoyo_byte_range(filename + 1))
|
| 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':
|
| 743 | if (!tomoyo_alphabet_char(c))
|
| 744 | return false;
|
| 745 | break;
|
| 746 | case '0':
|
| 747 | case '1':
|
| 748 | case '2':
|
| 749 | case '3':
|
| 750 | if (c == '\\' && tomoyo_byte_range(filename + 1)
|
| 751 | && strncmp(filename + 1, pattern, 3) == 0) {
|
| 752 | filename += 3;
|
| 753 | pattern += 2;
|
| 754 | break;
|
| 755 | }
|
| 756 | return false;
|
| 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++;
|
| 771 | else if (tomoyo_byte_range(filename + i + 1))
|
| 772 | i += 3;
|
| 773 | else
|
| 774 | break;
|
| 775 | }
|
| 776 | return false;
|
| 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') {
|
| 787 | while (tomoyo_alphabet_char(filename[j]))
|
| 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;
|
| 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 |
|
| 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 |
|
| 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;
|
| 893 | do {
|
| 894 |
|
| 895 | if (!tomoyo_file_matches_pattern(f, f_delimiter, p + 2,
|
| 896 | p_delimiter - 2))
|
| 897 | break;
|
| 898 |
|
| 899 | f = f_delimiter;
|
| 900 | if (!*f)
|
| 901 | break;
|
| 902 | f++;
|
| 903 |
|
| 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;
|
| 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 |
|
| 945 | if (!pattern->is_patterned)
|
| 946 | return !tomoyo_pathcmp(filename, pattern);
|
| 947 |
|
| 948 | if (filename->is_dir != pattern->is_dir)
|
| 949 | return false;
|
| 950 |
|
| 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 | {
|
| 968 | struct file *exe_file;
|
| 969 | const char *cp;
|
| 970 | struct mm_struct *mm = current->mm;
|
| 971 |
|
| 972 | if (!mm)
|
| 973 | return NULL;
|
| 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);
|
| 980 | return cp;
|
| 981 | }
|
| 982 |
|
| 983 | |
| 984 | * tomoyo_get_mode - Get MAC mode.
|
| 985 | *
|
| 986 | * @ns: Pointer to "struct tomoyo_policy_namespace".
|
| 987 | * @profile: Profile number.
|
| 988 | * @index: Index number of functionality.
|
| 989 | *
|
| 990 | * Returns mode.
|
| 991 |
|
| 992 | int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile,
|
| 993 | const u8 index)
|
| 994 | {
|
| 995 | u8 mode;
|
| 996 | struct tomoyo_profile *p;
|
| 997 |
|
| 998 | if (!tomoyo_policy_loaded)
|
| 999 | return TOMOYO_CONFIG_DISABLED;
|
| 1000 | p = tomoyo_profile(ns, profile);
|
| 1001 | mode = p->config[index];
|
| 1002 | if (mode == TOMOYO_CONFIG_USE_DEFAULT)
|
| 1003 | mode = p->config[tomoyo_index2category[index]
|
| 1004 | + TOMOYO_MAX_MAC_INDEX];
|
| 1005 | if (mode == TOMOYO_CONFIG_USE_DEFAULT)
|
| 1006 | mode = p->default_config;
|
| 1007 | return mode & 3;
|
| 1008 | }
|
| 1009 |
|
| 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().
|
| 1015 | * @index: Index number of functionality.
|
| 1016 | *
|
| 1017 | * Returns mode.
|
| 1018 |
|
| 1019 | int tomoyo_init_request_info(struct tomoyo_request_info *r,
|
| 1020 | struct tomoyo_domain_info *domain, const u8 index)
|
| 1021 | {
|
| 1022 | u8 profile;
|
| 1023 |
|
| 1024 | memset(r, 0, sizeof(*r));
|
| 1025 | if (!domain)
|
| 1026 | domain = tomoyo_domain();
|
| 1027 | r->domain = domain;
|
| 1028 | profile = domain->profile;
|
| 1029 | r->profile = profile;
|
| 1030 | r->type = index;
|
| 1031 | r->mode = tomoyo_get_mode(domain->ns, profile, index);
|
| 1032 | return r->mode;
|
| 1033 | }
|
| 1034 |
|
| 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;
|
| 1054 | if (READ_ONCE(domain->flags[TOMOYO_DIF_QUOTA_WARNED]))
|
| 1055 | return false;
|
| 1056 | list_for_each_entry_rcu(ptr, &domain->acl_info_list, list,
|
| 1057 | srcu_read_lock_held(&tomoyo_ss)) {
|
| 1058 | u16 perm;
|
| 1059 |
|
| 1060 | if (ptr->is_deleted)
|
| 1061 | continue;
|
| 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 |
|
| 1067 | switch (ptr->type) {
|
| 1068 | case TOMOYO_TYPE_PATH_ACL:
|
| 1069 | perm = data_race(container_of(ptr, struct tomoyo_path_acl, head)->perm);
|
| 1070 | break;
|
| 1071 | case TOMOYO_TYPE_PATH2_ACL:
|
| 1072 | perm = data_race(container_of(ptr, struct tomoyo_path2_acl, head)->perm);
|
| 1073 | break;
|
| 1074 | case TOMOYO_TYPE_PATH_NUMBER_ACL:
|
| 1075 | perm = data_race(container_of(ptr, struct tomoyo_path_number_acl, head)
|
| 1076 | ->perm);
|
| 1077 | break;
|
| 1078 | case TOMOYO_TYPE_MKDEV_ACL:
|
| 1079 | perm = data_race(container_of(ptr, struct tomoyo_mkdev_acl, head)->perm);
|
| 1080 | break;
|
| 1081 | case TOMOYO_TYPE_INET_ACL:
|
| 1082 | perm = data_race(container_of(ptr, struct tomoyo_inet_acl, head)->perm);
|
| 1083 | break;
|
| 1084 | case TOMOYO_TYPE_UNIX_ACL:
|
| 1085 | perm = data_race(container_of(ptr, struct tomoyo_unix_acl, head)->perm);
|
| 1086 | break;
|
| 1087 | case TOMOYO_TYPE_MANUAL_TASK_ACL:
|
| 1088 | perm = 0;
|
| 1089 | break;
|
| 1090 | default:
|
| 1091 | perm = 1;
|
| 1092 | }
|
| 1093 | count += hweight16(perm);
|
| 1094 | }
|
| 1095 | if (count < tomoyo_profile(domain->ns, domain->profile)->
|
| 1096 | pref[TOMOYO_PREF_MAX_LEARNING_ENTRY])
|
| 1097 | return true;
|
| 1098 | WRITE_ONCE(domain->flags[TOMOYO_DIF_QUOTA_WARNED], true);
|
| 1099 |
|
| 1100 | tomoyo_write_log(r, "%s", tomoyo_dif[TOMOYO_DIF_QUOTA_WARNED]);
|
| 1101 | #ifndef CONFIG_SECURITY_TOMOYO_INSECURE_BUILTIN_SETTING
|
| 1102 | pr_warn("WARNING: Domain '%s' has too many ACLs to hold. Stopped learning mode.\n",
|
| 1103 | domain->domainname->name);
|
| 1104 | #endif
|
| 1105 | return false;
|
| 1106 | }
|