2 * security/tomoyo/util.c
4 * Copyright (C) 2005-2011 NTT DATA CORPORATION
7 #include <linux/slab.h>
10 /* Lock for protecting policy. */
11 DEFINE_MUTEX(tomoyo_policy_lock);
13 /* Has /sbin/init started? */
14 bool tomoyo_policy_loaded;
17 * Mapping table from "enum tomoyo_mac_index" to
18 * "enum tomoyo_mac_category_index".
20 const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX] = {
21 /* CONFIG::file group */
22 [TOMOYO_MAC_FILE_EXECUTE] = TOMOYO_MAC_CATEGORY_FILE,
23 [TOMOYO_MAC_FILE_OPEN] = TOMOYO_MAC_CATEGORY_FILE,
24 [TOMOYO_MAC_FILE_CREATE] = TOMOYO_MAC_CATEGORY_FILE,
25 [TOMOYO_MAC_FILE_UNLINK] = TOMOYO_MAC_CATEGORY_FILE,
26 [TOMOYO_MAC_FILE_GETATTR] = TOMOYO_MAC_CATEGORY_FILE,
27 [TOMOYO_MAC_FILE_MKDIR] = TOMOYO_MAC_CATEGORY_FILE,
28 [TOMOYO_MAC_FILE_RMDIR] = TOMOYO_MAC_CATEGORY_FILE,
29 [TOMOYO_MAC_FILE_MKFIFO] = TOMOYO_MAC_CATEGORY_FILE,
30 [TOMOYO_MAC_FILE_MKSOCK] = TOMOYO_MAC_CATEGORY_FILE,
31 [TOMOYO_MAC_FILE_TRUNCATE] = TOMOYO_MAC_CATEGORY_FILE,
32 [TOMOYO_MAC_FILE_SYMLINK] = TOMOYO_MAC_CATEGORY_FILE,
33 [TOMOYO_MAC_FILE_MKBLOCK] = TOMOYO_MAC_CATEGORY_FILE,
34 [TOMOYO_MAC_FILE_MKCHAR] = TOMOYO_MAC_CATEGORY_FILE,
35 [TOMOYO_MAC_FILE_LINK] = TOMOYO_MAC_CATEGORY_FILE,
36 [TOMOYO_MAC_FILE_RENAME] = TOMOYO_MAC_CATEGORY_FILE,
37 [TOMOYO_MAC_FILE_CHMOD] = TOMOYO_MAC_CATEGORY_FILE,
38 [TOMOYO_MAC_FILE_CHOWN] = TOMOYO_MAC_CATEGORY_FILE,
39 [TOMOYO_MAC_FILE_CHGRP] = TOMOYO_MAC_CATEGORY_FILE,
40 [TOMOYO_MAC_FILE_IOCTL] = TOMOYO_MAC_CATEGORY_FILE,
41 [TOMOYO_MAC_FILE_CHROOT] = TOMOYO_MAC_CATEGORY_FILE,
42 [TOMOYO_MAC_FILE_MOUNT] = TOMOYO_MAC_CATEGORY_FILE,
43 [TOMOYO_MAC_FILE_UMOUNT] = TOMOYO_MAC_CATEGORY_FILE,
44 [TOMOYO_MAC_FILE_PIVOT_ROOT] = TOMOYO_MAC_CATEGORY_FILE,
45 /* CONFIG::network group */
46 [TOMOYO_MAC_NETWORK_INET_STREAM_BIND] =
47 TOMOYO_MAC_CATEGORY_NETWORK,
48 [TOMOYO_MAC_NETWORK_INET_STREAM_LISTEN] =
49 TOMOYO_MAC_CATEGORY_NETWORK,
50 [TOMOYO_MAC_NETWORK_INET_STREAM_CONNECT] =
51 TOMOYO_MAC_CATEGORY_NETWORK,
52 [TOMOYO_MAC_NETWORK_INET_DGRAM_BIND] =
53 TOMOYO_MAC_CATEGORY_NETWORK,
54 [TOMOYO_MAC_NETWORK_INET_DGRAM_SEND] =
55 TOMOYO_MAC_CATEGORY_NETWORK,
56 [TOMOYO_MAC_NETWORK_INET_RAW_BIND] =
57 TOMOYO_MAC_CATEGORY_NETWORK,
58 [TOMOYO_MAC_NETWORK_INET_RAW_SEND] =
59 TOMOYO_MAC_CATEGORY_NETWORK,
60 [TOMOYO_MAC_NETWORK_UNIX_STREAM_BIND] =
61 TOMOYO_MAC_CATEGORY_NETWORK,
62 [TOMOYO_MAC_NETWORK_UNIX_STREAM_LISTEN] =
63 TOMOYO_MAC_CATEGORY_NETWORK,
64 [TOMOYO_MAC_NETWORK_UNIX_STREAM_CONNECT] =
65 TOMOYO_MAC_CATEGORY_NETWORK,
66 [TOMOYO_MAC_NETWORK_UNIX_DGRAM_BIND] =
67 TOMOYO_MAC_CATEGORY_NETWORK,
68 [TOMOYO_MAC_NETWORK_UNIX_DGRAM_SEND] =
69 TOMOYO_MAC_CATEGORY_NETWORK,
70 [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_BIND] =
71 TOMOYO_MAC_CATEGORY_NETWORK,
72 [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_LISTEN] =
73 TOMOYO_MAC_CATEGORY_NETWORK,
74 [TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_CONNECT] =
75 TOMOYO_MAC_CATEGORY_NETWORK,
76 /* CONFIG::misc group */
77 [TOMOYO_MAC_ENVIRON] = TOMOYO_MAC_CATEGORY_MISC,
81 * tomoyo_convert_time - Convert time_t to YYYY/MM/DD hh/mm/ss.
83 * @time: Seconds since 1970/01/01 00:00:00.
84 * @stamp: Pointer to "struct tomoyo_time".
88 * This function does not handle Y2038 problem.
90 void tomoyo_convert_time(time_t time, struct tomoyo_time *stamp)
92 static const u16 tomoyo_eom[2][12] = {
93 { 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
94 { 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
99 stamp->sec = time % 60;
101 stamp->min = time % 60;
103 stamp->hour = time % 24;
105 for (y = 1970; ; y++) {
106 const unsigned short days = (y & 3) ? 365 : 366;
112 for (m = 0; m < 11 && time >= tomoyo_eom[r][m]; m++)
115 time -= tomoyo_eom[r][m - 1];
122 * tomoyo_permstr - Find permission keywords.
124 * @string: String representation for permissions in foo/bar/buz format.
125 * @keyword: Keyword to find from @string/
127 * Returns ture if @keyword was found in @string, false otherwise.
129 * This function assumes that strncmp(w1, w2, strlen(w1)) != 0 if w1 != w2.
131 bool tomoyo_permstr(const char *string, const char *keyword)
133 const char *cp = strstr(string, keyword);
135 return cp == string || *(cp - 1) == '/';
140 * tomoyo_read_token - Read a word from a line.
142 * @param: Pointer to "struct tomoyo_acl_param".
144 * Returns a word on success, "" otherwise.
146 * To allow the caller to skip NULL check, this function returns "" rather than
147 * NULL if there is no more words to read.
149 char *tomoyo_read_token(struct tomoyo_acl_param *param)
151 char *pos = param->data;
152 char *del = strchr(pos, ' ');
156 del = pos + strlen(pos);
162 * tomoyo_get_domainname - Read a domainname from a line.
164 * @param: Pointer to "struct tomoyo_acl_param".
166 * Returns a domainname on success, NULL otherwise.
168 const struct tomoyo_path_info *tomoyo_get_domainname
169 (struct tomoyo_acl_param *param)
171 char *start = param->data;
174 if (*pos++ != ' ' || *pos++ == '/')
181 if (tomoyo_correct_domain(start))
182 return tomoyo_get_name(start);
187 * tomoyo_parse_ulong - Parse an "unsigned long" value.
189 * @result: Pointer to "unsigned long".
190 * @str: Pointer to string to parse.
192 * Returns one of values in "enum tomoyo_value_type".
194 * The @src is updated to point the first character after the value
197 u8 tomoyo_parse_ulong(unsigned long *result, char **str)
199 const char *cp = *str;
204 if (c == 'x' || c == 'X') {
207 } else if (c >= '0' && c <= '7') {
212 *result = simple_strtoul(cp, &ep, base);
214 return TOMOYO_VALUE_TYPE_INVALID;
218 return TOMOYO_VALUE_TYPE_HEXADECIMAL;
220 return TOMOYO_VALUE_TYPE_OCTAL;
222 return TOMOYO_VALUE_TYPE_DECIMAL;
227 * tomoyo_print_ulong - Print an "unsigned long" value.
229 * @buffer: Pointer to buffer.
230 * @buffer_len: Size of @buffer.
231 * @value: An "unsigned long" value.
232 * @type: Type of @value.
236 void tomoyo_print_ulong(char *buffer, const int buffer_len,
237 const unsigned long value, const u8 type)
239 if (type == TOMOYO_VALUE_TYPE_DECIMAL)
240 snprintf(buffer, buffer_len, "%lu", value);
241 else if (type == TOMOYO_VALUE_TYPE_OCTAL)
242 snprintf(buffer, buffer_len, "0%lo", value);
243 else if (type == TOMOYO_VALUE_TYPE_HEXADECIMAL)
244 snprintf(buffer, buffer_len, "0x%lX", value);
246 snprintf(buffer, buffer_len, "type(%u)", type);
250 * tomoyo_parse_name_union - Parse a tomoyo_name_union.
252 * @param: Pointer to "struct tomoyo_acl_param".
253 * @ptr: Pointer to "struct tomoyo_name_union".
255 * Returns true on success, false otherwise.
257 bool tomoyo_parse_name_union(struct tomoyo_acl_param *param,
258 struct tomoyo_name_union *ptr)
261 if (param->data[0] == '@') {
263 ptr->group = tomoyo_get_group(param, TOMOYO_PATH_GROUP);
264 return ptr->group != NULL;
266 filename = tomoyo_read_token(param);
267 if (!tomoyo_correct_word(filename))
269 ptr->filename = tomoyo_get_name(filename);
270 return ptr->filename != NULL;
274 * tomoyo_parse_number_union - Parse a tomoyo_number_union.
276 * @param: Pointer to "struct tomoyo_acl_param".
277 * @ptr: Pointer to "struct tomoyo_number_union".
279 * Returns true on success, false otherwise.
281 bool tomoyo_parse_number_union(struct tomoyo_acl_param *param,
282 struct tomoyo_number_union *ptr)
287 memset(ptr, 0, sizeof(*ptr));
288 if (param->data[0] == '@') {
290 ptr->group = tomoyo_get_group(param, TOMOYO_NUMBER_GROUP);
291 return ptr->group != NULL;
293 data = tomoyo_read_token(param);
294 type = tomoyo_parse_ulong(&v, &data);
295 if (type == TOMOYO_VALUE_TYPE_INVALID)
298 ptr->value_type[0] = type;
301 ptr->value_type[1] = type;
306 type = tomoyo_parse_ulong(&v, &data);
307 if (type == TOMOYO_VALUE_TYPE_INVALID || *data || ptr->values[0] > v)
310 ptr->value_type[1] = type;
315 * tomoyo_byte_range - Check whether the string is a \ooo style octal value.
317 * @str: Pointer to the string.
319 * Returns true if @str is a \ooo style octal value, false otherwise.
321 * TOMOYO uses \ooo style representation for 0x01 - 0x20 and 0x7F - 0xFF.
322 * This function verifies that \ooo is in valid range.
324 static inline bool tomoyo_byte_range(const char *str)
326 return *str >= '0' && *str++ <= '3' &&
327 *str >= '0' && *str++ <= '7' &&
328 *str >= '0' && *str <= '7';
332 * tomoyo_alphabet_char - Check whether the character is an alphabet.
334 * @c: The character to check.
336 * Returns true if @c is an alphabet character, false otherwise.
338 static inline bool tomoyo_alphabet_char(const char c)
340 return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z');
344 * tomoyo_make_byte - Make byte value from three octal characters.
346 * @c1: The first character.
347 * @c2: The second character.
348 * @c3: The third character.
350 * Returns byte value.
352 static inline u8 tomoyo_make_byte(const u8 c1, const u8 c2, const u8 c3)
354 return ((c1 - '0') << 6) + ((c2 - '0') << 3) + (c3 - '0');
358 * tomoyo_valid - Check whether the character is a valid char.
360 * @c: The character to check.
362 * Returns true if @c is a valid character, false otherwise.
364 static inline bool tomoyo_valid(const unsigned char c)
366 return c > ' ' && c < 127;
370 * tomoyo_invalid - Check whether the character is an invalid char.
372 * @c: The character to check.
374 * Returns true if @c is an invalid character, false otherwise.
376 static inline bool tomoyo_invalid(const unsigned char c)
378 return c && (c <= ' ' || c >= 127);
382 * tomoyo_str_starts - Check whether the given string starts with the given keyword.
384 * @src: Pointer to pointer to the string.
385 * @find: Pointer to the keyword.
387 * Returns true if @src starts with @find, false otherwise.
389 * The @src is updated to point the first character after the @find
390 * if @src starts with @find.
392 bool tomoyo_str_starts(char **src, const char *find)
394 const int len = strlen(find);
397 if (strncmp(tmp, find, len))
405 * tomoyo_normalize_line - Format string.
407 * @buffer: The line to normalize.
409 * Leading and trailing whitespaces are removed.
410 * Multiple whitespaces are packed into single space.
414 void tomoyo_normalize_line(unsigned char *buffer)
416 unsigned char *sp = buffer;
417 unsigned char *dp = buffer;
420 while (tomoyo_invalid(*sp))
426 while (tomoyo_valid(*sp))
428 while (tomoyo_invalid(*sp))
435 * tomoyo_correct_word2 - Validate a string.
437 * @string: The string to check. Maybe non-'\0'-terminated.
438 * @len: Length of @string.
440 * Check whether the given string follows the naming rules.
441 * Returns true if @string follows the naming rules, false otherwise.
443 static bool tomoyo_correct_word2(const char *string, size_t len)
445 const char *const start = string;
446 bool in_repetition = false;
459 case '\\': /* "\\" */
472 case '{': /* "/\{" */
473 if (string - 3 < start || *(string - 3) != '/')
475 in_repetition = true;
477 case '}': /* "\}/" */
482 in_repetition = false;
484 case '0': /* "\ooo" */
488 if (!len-- || !len--)
492 if (d < '0' || d > '7' || e < '0' || e > '7')
494 c = tomoyo_make_byte(c, d, e);
495 if (tomoyo_invalid(c))
496 continue; /* pattern is not \000 */
499 } else if (in_repetition && c == '/') {
501 } else if (tomoyo_invalid(c)) {
513 * tomoyo_correct_word - Validate a string.
515 * @string: The string to check.
517 * Check whether the given string follows the naming rules.
518 * Returns true if @string follows the naming rules, false otherwise.
520 bool tomoyo_correct_word(const char *string)
522 return tomoyo_correct_word2(string, strlen(string));
526 * tomoyo_correct_path - Validate a pathname.
528 * @filename: The pathname to check.
530 * Check whether the given pathname follows the naming rules.
531 * Returns true if @filename follows the naming rules, false otherwise.
533 bool tomoyo_correct_path(const char *filename)
535 return *filename == '/' && tomoyo_correct_word(filename);
539 * tomoyo_correct_domain - Check whether the given domainname follows the naming rules.
541 * @domainname: The domainname to check.
543 * Returns true if @domainname follows the naming rules, false otherwise.
545 bool tomoyo_correct_domain(const unsigned char *domainname)
547 if (!domainname || !tomoyo_domain_def(domainname))
549 domainname = strchr(domainname, ' ');
553 const unsigned char *cp = strchr(domainname, ' ');
556 if (*domainname != '/' ||
557 !tomoyo_correct_word2(domainname, cp - domainname))
561 return tomoyo_correct_path(domainname);
565 * tomoyo_domain_def - Check whether the given token can be a domainname.
567 * @buffer: The token to check.
569 * Returns true if @buffer possibly be a domainname, false otherwise.
571 bool tomoyo_domain_def(const unsigned char *buffer)
573 const unsigned char *cp;
577 cp = strchr(buffer, ' ');
579 len = strlen(buffer);
582 if (buffer[len - 1] != '>' ||
583 !tomoyo_correct_word2(buffer + 1, len - 2))
589 * tomoyo_find_domain - Find a domain by the given name.
591 * @domainname: The domainname to find.
593 * Returns pointer to "struct tomoyo_domain_info" if found, NULL otherwise.
595 * Caller holds tomoyo_read_lock().
597 struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname)
599 struct tomoyo_domain_info *domain;
600 struct tomoyo_path_info name;
602 name.name = domainname;
603 tomoyo_fill_path_info(&name);
604 list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) {
605 if (!domain->is_deleted &&
606 !tomoyo_pathcmp(&name, domain->domainname))
613 * tomoyo_const_part_length - Evaluate the initial length without a pattern in a token.
615 * @filename: The string to evaluate.
617 * Returns the initial length without a pattern in @filename.
619 static int tomoyo_const_part_length(const char *filename)
626 while ((c = *filename++) != '\0') {
633 case '\\': /* "\\" */
636 case '0': /* "\ooo" */
641 if (c < '0' || c > '7')
644 if (c < '0' || c > '7')
655 * tomoyo_fill_path_info - Fill in "struct tomoyo_path_info" members.
657 * @ptr: Pointer to "struct tomoyo_path_info" to fill in.
659 * The caller sets "struct tomoyo_path_info"->name.
661 void tomoyo_fill_path_info(struct tomoyo_path_info *ptr)
663 const char *name = ptr->name;
664 const int len = strlen(name);
666 ptr->const_len = tomoyo_const_part_length(name);
667 ptr->is_dir = len && (name[len - 1] == '/');
668 ptr->is_patterned = (ptr->const_len < len);
669 ptr->hash = full_name_hash(name, len);
673 * tomoyo_file_matches_pattern2 - Pattern matching without '/' character and "\-" pattern.
675 * @filename: The start of string to check.
676 * @filename_end: The end of string to check.
677 * @pattern: The start of pattern to compare.
678 * @pattern_end: The end of pattern to compare.
680 * Returns true if @filename matches @pattern, false otherwise.
682 static bool tomoyo_file_matches_pattern2(const char *filename,
683 const char *filename_end,
685 const char *pattern_end)
687 while (filename < filename_end && pattern < pattern_end) {
689 if (*pattern != '\\') {
690 if (*filename++ != *pattern++)
702 } else if (c == '\\') {
703 if (filename[1] == '\\')
705 else if (tomoyo_byte_range(filename + 1))
714 if (*++filename != '\\')
726 if (!tomoyo_alphabet_char(c))
733 if (c == '\\' && tomoyo_byte_range(filename + 1)
734 && strncmp(filename + 1, pattern, 3) == 0) {
739 return false; /* Not matched. */
742 for (i = 0; i <= filename_end - filename; i++) {
743 if (tomoyo_file_matches_pattern2(
744 filename + i, filename_end,
745 pattern + 1, pattern_end))
748 if (c == '.' && *pattern == '@')
752 if (filename[i + 1] == '\\')
754 else if (tomoyo_byte_range(filename + i + 1))
757 break; /* Bad pattern. */
759 return false; /* Not matched. */
764 while (isdigit(filename[j]))
766 } else if (c == 'X') {
767 while (isxdigit(filename[j]))
769 } else if (c == 'A') {
770 while (tomoyo_alphabet_char(filename[j]))
773 for (i = 1; i <= j; i++) {
774 if (tomoyo_file_matches_pattern2(
775 filename + i, filename_end,
776 pattern + 1, pattern_end))
779 return false; /* Not matched or bad pattern. */
784 while (*pattern == '\\' &&
785 (*(pattern + 1) == '*' || *(pattern + 1) == '@'))
787 return filename == filename_end && pattern == pattern_end;
791 * tomoyo_file_matches_pattern - Pattern matching without '/' character.
793 * @filename: The start of string to check.
794 * @filename_end: The end of string to check.
795 * @pattern: The start of pattern to compare.
796 * @pattern_end: The end of pattern to compare.
798 * Returns true if @filename matches @pattern, false otherwise.
800 static bool tomoyo_file_matches_pattern(const char *filename,
801 const char *filename_end,
803 const char *pattern_end)
805 const char *pattern_start = pattern;
809 while (pattern < pattern_end - 1) {
810 /* Split at "\-" pattern. */
811 if (*pattern++ != '\\' || *pattern++ != '-')
813 result = tomoyo_file_matches_pattern2(filename,
822 pattern_start = pattern;
824 result = tomoyo_file_matches_pattern2(filename, filename_end,
825 pattern_start, pattern_end);
826 return first ? result : !result;
830 * tomoyo_path_matches_pattern2 - Do pathname pattern matching.
832 * @f: The start of string to check.
833 * @p: The start of pattern to compare.
835 * Returns true if @f matches @p, false otherwise.
837 static bool tomoyo_path_matches_pattern2(const char *f, const char *p)
839 const char *f_delimiter;
840 const char *p_delimiter;
843 f_delimiter = strchr(f, '/');
845 f_delimiter = f + strlen(f);
846 p_delimiter = strchr(p, '/');
848 p_delimiter = p + strlen(p);
849 if (*p == '\\' && *(p + 1) == '{')
851 if (!tomoyo_file_matches_pattern(f, f_delimiter, p,
861 /* Ignore trailing "\*" and "\@" in @pattern. */
863 (*(p + 1) == '*' || *(p + 1) == '@'))
868 * The "\{" pattern is permitted only after '/' character.
869 * This guarantees that below "*(p - 1)" is safe.
870 * Also, the "\}" pattern is permitted only before '/' character
871 * so that "\{" + "\}" pair will not break the "\-" operator.
873 if (*(p - 1) != '/' || p_delimiter <= p + 3 || *p_delimiter != '/' ||
874 *(p_delimiter - 1) != '}' || *(p_delimiter - 2) != '\\')
875 return false; /* Bad pattern. */
877 /* Compare current component with pattern. */
878 if (!tomoyo_file_matches_pattern(f, f_delimiter, p + 2,
881 /* Proceed to next component. */
886 /* Continue comparison. */
887 if (tomoyo_path_matches_pattern2(f, p_delimiter + 1))
889 f_delimiter = strchr(f, '/');
890 } while (f_delimiter);
891 return false; /* Not matched. */
895 * tomoyo_path_matches_pattern - Check whether the given filename matches the given pattern.
897 * @filename: The filename to check.
898 * @pattern: The pattern to compare.
900 * Returns true if matches, false otherwise.
902 * The following patterns are available.
904 * \ooo Octal representation of a byte.
905 * \* Zero or more repetitions of characters other than '/'.
906 * \@ Zero or more repetitions of characters other than '/' or '.'.
907 * \? 1 byte character other than '/'.
908 * \$ One or more repetitions of decimal digits.
909 * \+ 1 decimal digit.
910 * \X One or more repetitions of hexadecimal digits.
911 * \x 1 hexadecimal digit.
912 * \A One or more repetitions of alphabet characters.
913 * \a 1 alphabet character.
915 * \- Subtraction operator.
917 * /\{dir\}/ '/' + 'One or more repetitions of dir/' (e.g. /dir/ /dir/dir/
920 bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
921 const struct tomoyo_path_info *pattern)
923 const char *f = filename->name;
924 const char *p = pattern->name;
925 const int len = pattern->const_len;
927 /* If @pattern doesn't contain pattern, I can use strcmp(). */
928 if (!pattern->is_patterned)
929 return !tomoyo_pathcmp(filename, pattern);
930 /* Don't compare directory and non-directory. */
931 if (filename->is_dir != pattern->is_dir)
933 /* Compare the initial length without patterns. */
934 if (strncmp(f, p, len))
938 return tomoyo_path_matches_pattern2(f, p);
942 * tomoyo_get_exe - Get tomoyo_realpath() of current process.
944 * Returns the tomoyo_realpath() of current process on success, NULL otherwise.
946 * This function uses kzalloc(), so the caller must call kfree()
947 * if this function didn't return NULL.
949 const char *tomoyo_get_exe(void)
951 struct mm_struct *mm = current->mm;
952 struct vm_area_struct *vma;
953 const char *cp = NULL;
957 down_read(&mm->mmap_sem);
958 for (vma = mm->mmap; vma; vma = vma->vm_next) {
959 if ((vma->vm_flags & VM_EXECUTABLE) && vma->vm_file) {
960 cp = tomoyo_realpath_from_path(&vma->vm_file->f_path);
964 up_read(&mm->mmap_sem);
969 * tomoyo_get_mode - Get MAC mode.
971 * @ns: Pointer to "struct tomoyo_policy_namespace".
972 * @profile: Profile number.
973 * @index: Index number of functionality.
977 int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile,
981 struct tomoyo_profile *p;
983 if (!tomoyo_policy_loaded)
984 return TOMOYO_CONFIG_DISABLED;
985 p = tomoyo_profile(ns, profile);
986 mode = p->config[index];
987 if (mode == TOMOYO_CONFIG_USE_DEFAULT)
988 mode = p->config[tomoyo_index2category[index]
989 + TOMOYO_MAX_MAC_INDEX];
990 if (mode == TOMOYO_CONFIG_USE_DEFAULT)
991 mode = p->default_config;
996 * tomoyo_init_request_info - Initialize "struct tomoyo_request_info" members.
998 * @r: Pointer to "struct tomoyo_request_info" to initialize.
999 * @domain: Pointer to "struct tomoyo_domain_info". NULL for tomoyo_domain().
1000 * @index: Index number of functionality.
1004 int tomoyo_init_request_info(struct tomoyo_request_info *r,
1005 struct tomoyo_domain_info *domain, const u8 index)
1008 memset(r, 0, sizeof(*r));
1010 domain = tomoyo_domain();
1012 profile = domain->profile;
1013 r->profile = profile;
1015 r->mode = tomoyo_get_mode(domain->ns, profile, index);
1020 * tomoyo_domain_quota_is_ok - Check for domain's quota.
1022 * @r: Pointer to "struct tomoyo_request_info".
1024 * Returns true if the domain is not exceeded quota, false otherwise.
1026 * Caller holds tomoyo_read_lock().
1028 bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r)
1030 unsigned int count = 0;
1031 struct tomoyo_domain_info *domain = r->domain;
1032 struct tomoyo_acl_info *ptr;
1034 if (r->mode != TOMOYO_CONFIG_LEARNING)
1038 list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
1041 if (ptr->is_deleted)
1043 switch (ptr->type) {
1044 case TOMOYO_TYPE_PATH_ACL:
1045 perm = container_of(ptr, struct tomoyo_path_acl, head)
1048 case TOMOYO_TYPE_PATH2_ACL:
1049 perm = container_of(ptr, struct tomoyo_path2_acl, head)
1052 case TOMOYO_TYPE_PATH_NUMBER_ACL:
1053 perm = container_of(ptr, struct tomoyo_path_number_acl,
1056 case TOMOYO_TYPE_MKDEV_ACL:
1057 perm = container_of(ptr, struct tomoyo_mkdev_acl,
1060 case TOMOYO_TYPE_INET_ACL:
1061 perm = container_of(ptr, struct tomoyo_inet_acl,
1064 case TOMOYO_TYPE_UNIX_ACL:
1065 perm = container_of(ptr, struct tomoyo_unix_acl,
1068 case TOMOYO_TYPE_MANUAL_TASK_ACL:
1074 for (i = 0; i < 16; i++)
1075 if (perm & (1 << i))
1078 if (count < tomoyo_profile(domain->ns, domain->profile)->
1079 pref[TOMOYO_PREF_MAX_LEARNING_ENTRY])
1081 if (!domain->flags[TOMOYO_DIF_QUOTA_WARNED]) {
1082 domain->flags[TOMOYO_DIF_QUOTA_WARNED] = true;
1083 /* r->granted = false; */
1084 tomoyo_write_log(r, "%s", tomoyo_dif[TOMOYO_DIF_QUOTA_WARNED]);
1085 printk(KERN_WARNING "WARNING: "
1086 "Domain '%s' has too many ACLs to hold. "
1087 "Stopped learning mode.\n", domain->domainname->name);