2 * security/tomoyo/common.h
4 * Header file for TOMOYO.
6 * Copyright (C) 2005-2010 NTT DATA CORPORATION
9 #ifndef _SECURITY_TOMOYO_COMMON_H
10 #define _SECURITY_TOMOYO_COMMON_H
12 #include <linux/ctype.h>
13 #include <linux/string.h>
15 #include <linux/file.h>
16 #include <linux/kmod.h>
18 #include <linux/sched.h>
19 #include <linux/namei.h>
20 #include <linux/mount.h>
21 #include <linux/list.h>
22 #include <linux/cred.h>
23 #include <linux/poll.h>
24 #include <linux/binfmts.h>
25 #include <linux/highmem.h>
27 /********** Constants definitions. **********/
30 * TOMOYO uses this hash only when appending a string into the string
31 * table. Frequency of appending strings is very low. So we don't need
32 * large (e.g. 64k) hash size. 256 will be sufficient.
34 #define TOMOYO_HASH_BITS 8
35 #define TOMOYO_MAX_HASH (1u<<TOMOYO_HASH_BITS)
37 #define TOMOYO_EXEC_TMPSIZE 4096
39 /* Profile number is an integer between 0 and 255. */
40 #define TOMOYO_MAX_PROFILES 256
42 /* Group number is an integer between 0 and 255. */
43 #define TOMOYO_MAX_ACL_GROUPS 256
45 /* Index numbers for "struct tomoyo_condition". */
46 enum tomoyo_conditions_index {
47 TOMOYO_TASK_UID, /* current_uid() */
48 TOMOYO_TASK_EUID, /* current_euid() */
49 TOMOYO_TASK_SUID, /* current_suid() */
50 TOMOYO_TASK_FSUID, /* current_fsuid() */
51 TOMOYO_TASK_GID, /* current_gid() */
52 TOMOYO_TASK_EGID, /* current_egid() */
53 TOMOYO_TASK_SGID, /* current_sgid() */
54 TOMOYO_TASK_FSGID, /* current_fsgid() */
55 TOMOYO_TASK_PID, /* sys_getpid() */
56 TOMOYO_TASK_PPID, /* sys_getppid() */
57 TOMOYO_EXEC_ARGC, /* "struct linux_binprm *"->argc */
58 TOMOYO_EXEC_ENVC, /* "struct linux_binprm *"->envc */
59 TOMOYO_TYPE_IS_SOCKET, /* S_IFSOCK */
60 TOMOYO_TYPE_IS_SYMLINK, /* S_IFLNK */
61 TOMOYO_TYPE_IS_FILE, /* S_IFREG */
62 TOMOYO_TYPE_IS_BLOCK_DEV, /* S_IFBLK */
63 TOMOYO_TYPE_IS_DIRECTORY, /* S_IFDIR */
64 TOMOYO_TYPE_IS_CHAR_DEV, /* S_IFCHR */
65 TOMOYO_TYPE_IS_FIFO, /* S_IFIFO */
66 TOMOYO_MODE_SETUID, /* S_ISUID */
67 TOMOYO_MODE_SETGID, /* S_ISGID */
68 TOMOYO_MODE_STICKY, /* S_ISVTX */
69 TOMOYO_MODE_OWNER_READ, /* S_IRUSR */
70 TOMOYO_MODE_OWNER_WRITE, /* S_IWUSR */
71 TOMOYO_MODE_OWNER_EXECUTE, /* S_IXUSR */
72 TOMOYO_MODE_GROUP_READ, /* S_IRGRP */
73 TOMOYO_MODE_GROUP_WRITE, /* S_IWGRP */
74 TOMOYO_MODE_GROUP_EXECUTE, /* S_IXGRP */
75 TOMOYO_MODE_OTHERS_READ, /* S_IROTH */
76 TOMOYO_MODE_OTHERS_WRITE, /* S_IWOTH */
77 TOMOYO_MODE_OTHERS_EXECUTE, /* S_IXOTH */
79 TOMOYO_SYMLINK_TARGET,
87 TOMOYO_PATH1_DEV_MAJOR,
88 TOMOYO_PATH1_DEV_MINOR,
96 TOMOYO_PATH2_DEV_MAJOR,
97 TOMOYO_PATH2_DEV_MINOR,
98 TOMOYO_PATH1_PARENT_UID,
99 TOMOYO_PATH1_PARENT_GID,
100 TOMOYO_PATH1_PARENT_INO,
101 TOMOYO_PATH1_PARENT_PERM,
102 TOMOYO_PATH2_PARENT_UID,
103 TOMOYO_PATH2_PARENT_GID,
104 TOMOYO_PATH2_PARENT_INO,
105 TOMOYO_PATH2_PARENT_PERM,
106 TOMOYO_MAX_CONDITION_KEYWORD,
114 /* Index numbers for stat(). */
115 enum tomoyo_path_stat_index {
116 /* Do not change this order. */
124 /* Index numbers for operation mode. */
125 enum tomoyo_mode_index {
126 TOMOYO_CONFIG_DISABLED,
127 TOMOYO_CONFIG_LEARNING,
128 TOMOYO_CONFIG_PERMISSIVE,
129 TOMOYO_CONFIG_ENFORCING,
130 TOMOYO_CONFIG_MAX_MODE,
131 TOMOYO_CONFIG_WANT_REJECT_LOG = 64,
132 TOMOYO_CONFIG_WANT_GRANT_LOG = 128,
133 TOMOYO_CONFIG_USE_DEFAULT = 255,
136 /* Index numbers for entry type. */
137 enum tomoyo_policy_id {
139 TOMOYO_ID_PATH_GROUP,
140 TOMOYO_ID_NUMBER_GROUP,
141 TOMOYO_ID_TRANSITION_CONTROL,
142 TOMOYO_ID_AGGREGATOR,
151 /* Index numbers for domain's attributes. */
152 enum tomoyo_domain_info_flags_index {
153 /* Quota warnning flag. */
154 TOMOYO_DIF_QUOTA_WARNED,
156 * This domain was unable to create a new domain at
157 * tomoyo_find_next_domain() because the name of the domain to be
158 * created was too long or it could not allocate memory.
159 * More than one process continued execve() without domain transition.
161 TOMOYO_DIF_TRANSITION_FAILED,
162 TOMOYO_MAX_DOMAIN_INFO_FLAGS
165 /* Index numbers for group entries. */
166 enum tomoyo_group_id {
172 /* Index numbers for type of numeric values. */
173 enum tomoyo_value_type {
174 TOMOYO_VALUE_TYPE_INVALID,
175 TOMOYO_VALUE_TYPE_DECIMAL,
176 TOMOYO_VALUE_TYPE_OCTAL,
177 TOMOYO_VALUE_TYPE_HEXADECIMAL,
180 /* Index numbers for domain transition control keywords. */
181 enum tomoyo_transition_type {
182 /* Do not change this order, */
183 TOMOYO_TRANSITION_CONTROL_NO_RESET,
184 TOMOYO_TRANSITION_CONTROL_RESET,
185 TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE,
186 TOMOYO_TRANSITION_CONTROL_INITIALIZE,
187 TOMOYO_TRANSITION_CONTROL_NO_KEEP,
188 TOMOYO_TRANSITION_CONTROL_KEEP,
189 TOMOYO_MAX_TRANSITION_TYPE
192 /* Index numbers for Access Controls. */
193 enum tomoyo_acl_entry_type_index {
194 TOMOYO_TYPE_PATH_ACL,
195 TOMOYO_TYPE_PATH2_ACL,
196 TOMOYO_TYPE_PATH_NUMBER_ACL,
197 TOMOYO_TYPE_MKDEV_ACL,
198 TOMOYO_TYPE_MOUNT_ACL,
201 /* Index numbers for access controls with one pathname. */
202 enum tomoyo_path_acl_index {
210 TOMOYO_TYPE_TRUNCATE,
214 TOMOYO_MAX_PATH_OPERATION
217 /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
218 enum tomoyo_memory_stat_type {
219 TOMOYO_MEMORY_POLICY,
222 TOMOYO_MAX_MEMORY_STAT
225 enum tomoyo_mkdev_acl_index {
228 TOMOYO_MAX_MKDEV_OPERATION
231 /* Index numbers for access controls with two pathnames. */
232 enum tomoyo_path2_acl_index {
235 TOMOYO_TYPE_PIVOT_ROOT,
236 TOMOYO_MAX_PATH2_OPERATION
239 /* Index numbers for access controls with one pathname and one number. */
240 enum tomoyo_path_number_acl_index {
249 TOMOYO_MAX_PATH_NUMBER_OPERATION
252 /* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */
253 enum tomoyo_securityfs_interface_index {
255 TOMOYO_EXCEPTIONPOLICY,
256 TOMOYO_PROCESS_STATUS,
266 /* Index numbers for special mount operations. */
267 enum tomoyo_special_mount {
268 TOMOYO_MOUNT_BIND, /* mount --bind /source /dest */
269 TOMOYO_MOUNT_MOVE, /* mount --move /old /new */
270 TOMOYO_MOUNT_REMOUNT, /* mount -o remount /dir */
271 TOMOYO_MOUNT_MAKE_UNBINDABLE, /* mount --make-unbindable /dir */
272 TOMOYO_MOUNT_MAKE_PRIVATE, /* mount --make-private /dir */
273 TOMOYO_MOUNT_MAKE_SLAVE, /* mount --make-slave /dir */
274 TOMOYO_MOUNT_MAKE_SHARED, /* mount --make-shared /dir */
275 TOMOYO_MAX_SPECIAL_MOUNT
278 /* Index numbers for functionality. */
279 enum tomoyo_mac_index {
280 TOMOYO_MAC_FILE_EXECUTE,
281 TOMOYO_MAC_FILE_OPEN,
282 TOMOYO_MAC_FILE_CREATE,
283 TOMOYO_MAC_FILE_UNLINK,
284 TOMOYO_MAC_FILE_GETATTR,
285 TOMOYO_MAC_FILE_MKDIR,
286 TOMOYO_MAC_FILE_RMDIR,
287 TOMOYO_MAC_FILE_MKFIFO,
288 TOMOYO_MAC_FILE_MKSOCK,
289 TOMOYO_MAC_FILE_TRUNCATE,
290 TOMOYO_MAC_FILE_SYMLINK,
291 TOMOYO_MAC_FILE_MKBLOCK,
292 TOMOYO_MAC_FILE_MKCHAR,
293 TOMOYO_MAC_FILE_LINK,
294 TOMOYO_MAC_FILE_RENAME,
295 TOMOYO_MAC_FILE_CHMOD,
296 TOMOYO_MAC_FILE_CHOWN,
297 TOMOYO_MAC_FILE_CHGRP,
298 TOMOYO_MAC_FILE_IOCTL,
299 TOMOYO_MAC_FILE_CHROOT,
300 TOMOYO_MAC_FILE_MOUNT,
301 TOMOYO_MAC_FILE_UMOUNT,
302 TOMOYO_MAC_FILE_PIVOT_ROOT,
306 /* Index numbers for category of functionality. */
307 enum tomoyo_mac_category_index {
308 TOMOYO_MAC_CATEGORY_FILE,
309 TOMOYO_MAX_MAC_CATEGORY_INDEX
313 * Retry this request. Returned by tomoyo_supervisor() if policy violation has
314 * occurred in enforcing mode and the userspace daemon decided to retry.
316 * We must choose a positive value in order to distinguish "granted" (which is
317 * 0) and "rejected" (which is a negative value) and "retry".
319 #define TOMOYO_RETRY_REQUEST 1
321 /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
322 enum tomoyo_policy_stat_type {
323 /* Do not change this order. */
324 TOMOYO_STAT_POLICY_UPDATES,
325 TOMOYO_STAT_POLICY_LEARNING, /* == TOMOYO_CONFIG_LEARNING */
326 TOMOYO_STAT_POLICY_PERMISSIVE, /* == TOMOYO_CONFIG_PERMISSIVE */
327 TOMOYO_STAT_POLICY_ENFORCING, /* == TOMOYO_CONFIG_ENFORCING */
328 TOMOYO_MAX_POLICY_STAT
331 /* Index numbers for profile's PREFERENCE values. */
332 enum tomoyo_pref_index {
333 TOMOYO_PREF_MAX_AUDIT_LOG,
334 TOMOYO_PREF_MAX_LEARNING_ENTRY,
338 /********** Structure definitions. **********/
340 /* Common header for holding ACL entries. */
341 struct tomoyo_acl_head {
342 struct list_head list;
346 /* Common header for shared entries. */
347 struct tomoyo_shared_acl_head {
348 struct list_head list;
352 struct tomoyo_policy_namespace;
354 /* Structure for request info. */
355 struct tomoyo_request_info {
357 * For holding parameters specific to operations which deal files.
358 * NULL if not dealing files.
360 struct tomoyo_obj_info *obj;
362 * For holding parameters specific to execve() request.
363 * NULL if not dealing do_execve().
365 struct tomoyo_execve *ee;
366 struct tomoyo_domain_info *domain;
367 /* For holding parameters. */
370 const struct tomoyo_path_info *filename;
371 /* For using wildcards at tomoyo_find_next_domain(). */
372 const struct tomoyo_path_info *matched_path;
373 /* One of values in "enum tomoyo_path_acl_index". */
377 const struct tomoyo_path_info *filename1;
378 const struct tomoyo_path_info *filename2;
379 /* One of values in "enum tomoyo_path2_acl_index". */
383 const struct tomoyo_path_info *filename;
387 /* One of values in "enum tomoyo_mkdev_acl_index". */
391 const struct tomoyo_path_info *filename;
392 unsigned long number;
395 * "enum tomoyo_path_number_acl_index".
400 const struct tomoyo_path_info *type;
401 const struct tomoyo_path_info *dir;
402 const struct tomoyo_path_info *dev;
411 u8 mode; /* One of tomoyo_mode_index . */
415 /* Structure for holding a token. */
416 struct tomoyo_path_info {
418 u32 hash; /* = full_name_hash(name, strlen(name)) */
419 u16 const_len; /* = tomoyo_const_part_length(name) */
420 bool is_dir; /* = tomoyo_strendswith(name, "/") */
421 bool is_patterned; /* = tomoyo_path_contains_pattern(name) */
424 /* Structure for holding string data. */
426 struct tomoyo_shared_acl_head head;
427 struct tomoyo_path_info entry;
430 /* Structure for holding a word. */
431 struct tomoyo_name_union {
432 /* Either @filename or @group is NULL. */
433 const struct tomoyo_path_info *filename;
434 struct tomoyo_group *group;
437 /* Structure for holding a number. */
438 struct tomoyo_number_union {
439 unsigned long values[2];
440 struct tomoyo_group *group; /* Maybe NULL. */
441 /* One of values in "enum tomoyo_value_type". */
445 /* Structure for "path_group"/"number_group" directive. */
446 struct tomoyo_group {
447 struct tomoyo_shared_acl_head head;
448 const struct tomoyo_path_info *group_name;
449 struct list_head member_list;
452 /* Structure for "path_group" directive. */
453 struct tomoyo_path_group {
454 struct tomoyo_acl_head head;
455 const struct tomoyo_path_info *member_name;
458 /* Structure for "number_group" directive. */
459 struct tomoyo_number_group {
460 struct tomoyo_acl_head head;
461 struct tomoyo_number_union number;
464 /* Subset of "struct stat". Used by conditional ACL and audit logs. */
465 struct tomoyo_mini_stat {
474 /* Structure for dumping argv[] and envp[] of "struct linux_binprm". */
475 struct tomoyo_page_dump {
476 struct page *page; /* Previously dumped page. */
477 char *data; /* Contents of "page". Size is PAGE_SIZE. */
480 /* Structure for attribute checks in addition to pathname checks. */
481 struct tomoyo_obj_info {
483 * True if tomoyo_get_attributes() was already called, false otherwise.
486 /* True if @stat[] is valid. */
487 bool stat_valid[TOMOYO_MAX_PATH_STAT];
488 /* First pathname. Initialized with { NULL, NULL } if no path. */
490 /* Second pathname. Initialized with { NULL, NULL } if no path. */
493 * Information on @path1, @path1's parent directory, @path2, @path2's
496 struct tomoyo_mini_stat stat[TOMOYO_MAX_PATH_STAT];
498 * Content of symbolic link to be created. NULL for operations other
501 struct tomoyo_path_info *symlink_target;
504 /* Structure for argv[]. */
507 const struct tomoyo_path_info *value;
511 /* Structure for envp[]. */
513 const struct tomoyo_path_info *name;
514 const struct tomoyo_path_info *value;
518 /* Structure for execve() operation. */
519 struct tomoyo_execve {
520 struct tomoyo_request_info r;
521 struct tomoyo_obj_info obj;
522 struct linux_binprm *bprm;
523 /* For dumping argv[] and envp[]. */
524 struct tomoyo_page_dump dump;
525 /* For temporary use. */
526 char *tmp; /* Size is TOMOYO_EXEC_TMPSIZE bytes */
529 /* Structure for entries which follows "struct tomoyo_condition". */
530 struct tomoyo_condition_element {
532 * Left hand operand. A "struct tomoyo_argv" for TOMOYO_ARGV_ENTRY, a
533 * "struct tomoyo_envp" for TOMOYO_ENVP_ENTRY is attached to the tail
534 * of the array of this struct.
538 * Right hand operand. A "struct tomoyo_number_union" for
539 * TOMOYO_NUMBER_UNION, a "struct tomoyo_name_union" for
540 * TOMOYO_NAME_UNION is attached to the tail of the array of this
544 /* Equation operator. True if equals or overlaps, false otherwise. */
548 /* Structure for optional arguments. */
549 struct tomoyo_condition {
550 struct tomoyo_shared_acl_head head;
551 u32 size; /* Memory size allocated for this entry. */
552 u16 condc; /* Number of conditions in this struct. */
553 u16 numbers_count; /* Number of "struct tomoyo_number_union values". */
554 u16 names_count; /* Number of "struct tomoyo_name_union names". */
555 u16 argc; /* Number of "struct tomoyo_argv". */
556 u16 envc; /* Number of "struct tomoyo_envp". */
558 * struct tomoyo_condition_element condition[condc];
559 * struct tomoyo_number_union values[numbers_count];
560 * struct tomoyo_name_union names[names_count];
561 * struct tomoyo_argv argv[argc];
562 * struct tomoyo_envp envp[envc];
566 /* Common header for individual entries. */
567 struct tomoyo_acl_info {
568 struct list_head list;
569 struct tomoyo_condition *cond; /* Maybe NULL. */
571 u8 type; /* One of values in "enum tomoyo_acl_entry_type_index". */
574 /* Structure for domain information. */
575 struct tomoyo_domain_info {
576 struct list_head list;
577 struct list_head acl_info_list;
578 /* Name of this domain. Never NULL. */
579 const struct tomoyo_path_info *domainname;
580 /* Namespace for this domain. Never NULL. */
581 struct tomoyo_policy_namespace *ns;
582 u8 profile; /* Profile number to use. */
583 u8 group; /* Group number to use. */
584 bool is_deleted; /* Delete flag. */
585 bool flags[TOMOYO_MAX_DOMAIN_INFO_FLAGS];
586 atomic_t users; /* Number of referring credentials. */
590 * Structure for "file execute", "file read", "file write", "file append",
591 * "file unlink", "file getattr", "file rmdir", "file truncate",
592 * "file symlink", "file chroot" and "file unmount" directive.
594 struct tomoyo_path_acl {
595 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */
596 u16 perm; /* Bitmask of values in "enum tomoyo_path_acl_index". */
597 struct tomoyo_name_union name;
601 * Structure for "file create", "file mkdir", "file mkfifo", "file mksock",
602 * "file ioctl", "file chmod", "file chown" and "file chgrp" directive.
604 struct tomoyo_path_number_acl {
605 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */
606 /* Bitmask of values in "enum tomoyo_path_number_acl_index". */
608 struct tomoyo_name_union name;
609 struct tomoyo_number_union number;
612 /* Structure for "file mkblock" and "file mkchar" directive. */
613 struct tomoyo_mkdev_acl {
614 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */
615 u8 perm; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */
616 struct tomoyo_name_union name;
617 struct tomoyo_number_union mode;
618 struct tomoyo_number_union major;
619 struct tomoyo_number_union minor;
623 * Structure for "file rename", "file link" and "file pivot_root" directive.
625 struct tomoyo_path2_acl {
626 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */
627 u8 perm; /* Bitmask of values in "enum tomoyo_path2_acl_index". */
628 struct tomoyo_name_union name1;
629 struct tomoyo_name_union name2;
632 /* Structure for "file mount" directive. */
633 struct tomoyo_mount_acl {
634 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */
635 struct tomoyo_name_union dev_name;
636 struct tomoyo_name_union dir_name;
637 struct tomoyo_name_union fs_type;
638 struct tomoyo_number_union flags;
641 /* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */
642 struct tomoyo_acl_param {
644 struct list_head *list;
645 struct tomoyo_policy_namespace *ns;
649 #define TOMOYO_MAX_IO_READ_QUEUE 64
652 * Structure for reading/writing policy via /sys/kernel/security/tomoyo
655 struct tomoyo_io_buffer {
656 void (*read) (struct tomoyo_io_buffer *);
657 int (*write) (struct tomoyo_io_buffer *);
658 int (*poll) (struct file *file, poll_table *wait);
659 /* Exclusive lock for this structure. */
661 char __user *read_user_buf;
662 size_t read_user_buf_avail;
664 struct list_head *ns;
665 struct list_head *domain;
666 struct list_head *group;
667 struct list_head *acl;
670 unsigned int query_index;
678 bool print_this_domain_only;
679 bool print_transition_related_only;
680 bool print_cond_part;
681 const char *w[TOMOYO_MAX_IO_READ_QUEUE];
684 struct tomoyo_policy_namespace *ns;
685 /* The position currently writing to. */
686 struct tomoyo_domain_info *domain;
687 /* Bytes available for writing. */
691 /* Buffer for reading. */
693 /* Size of read buffer. */
695 /* Buffer for writing. */
697 /* Size of write buffer. */
698 size_t writebuf_size;
699 /* Type of this interface. */
700 enum tomoyo_securityfs_interface_index type;
701 /* Users counter protected by tomoyo_io_buffer_list_lock. */
703 /* List for telling GC not to kfree() elements. */
704 struct list_head list;
708 * Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/
709 * "no_keep_domain" keyword.
711 struct tomoyo_transition_control {
712 struct tomoyo_acl_head head;
713 u8 type; /* One of values in "enum tomoyo_transition_type". */
714 /* True if the domainname is tomoyo_get_last_name(). */
716 const struct tomoyo_path_info *domainname; /* Maybe NULL */
717 const struct tomoyo_path_info *program; /* Maybe NULL */
720 /* Structure for "aggregator" keyword. */
721 struct tomoyo_aggregator {
722 struct tomoyo_acl_head head;
723 const struct tomoyo_path_info *original_name;
724 const struct tomoyo_path_info *aggregated_name;
727 /* Structure for policy manager. */
728 struct tomoyo_manager {
729 struct tomoyo_acl_head head;
730 bool is_domain; /* True if manager is a domainname. */
731 /* A path to program or a domainname. */
732 const struct tomoyo_path_info *manager;
735 struct tomoyo_preference {
736 unsigned int learning_max_entry;
737 bool enforcing_verbose;
738 bool learning_verbose;
739 bool permissive_verbose;
742 /* Structure for /sys/kernel/security/tomnoyo/profile interface. */
743 struct tomoyo_profile {
744 const struct tomoyo_path_info *comment;
745 struct tomoyo_preference *learning;
746 struct tomoyo_preference *permissive;
747 struct tomoyo_preference *enforcing;
748 struct tomoyo_preference preference;
750 u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX];
751 unsigned int pref[TOMOYO_MAX_PREF];
754 /* Structure for representing YYYY/MM/DD hh/mm/ss. */
764 /* Structure for policy namespace. */
765 struct tomoyo_policy_namespace {
766 /* Profile table. Memory is allocated as needed. */
767 struct tomoyo_profile *profile_ptr[TOMOYO_MAX_PROFILES];
768 /* List of "struct tomoyo_group". */
769 struct list_head group_list[TOMOYO_MAX_GROUP];
770 /* List of policy. */
771 struct list_head policy_list[TOMOYO_MAX_POLICY];
772 /* The global ACL referred by "use_group" keyword. */
773 struct list_head acl_group[TOMOYO_MAX_ACL_GROUPS];
774 /* List for connecting to tomoyo_namespace_list list. */
775 struct list_head namespace_list;
776 /* Profile version. Currently only 20100903 is defined. */
777 unsigned int profile_version;
778 /* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */
782 /********** Function prototypes. **********/
784 bool tomoyo_compare_number_union(const unsigned long value,
785 const struct tomoyo_number_union *ptr);
786 bool tomoyo_condition(struct tomoyo_request_info *r,
787 const struct tomoyo_condition *cond);
788 bool tomoyo_correct_domain(const unsigned char *domainname);
789 bool tomoyo_correct_path(const char *filename);
790 bool tomoyo_correct_word(const char *string);
791 bool tomoyo_domain_def(const unsigned char *buffer);
792 bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r);
793 bool tomoyo_dump_page(struct linux_binprm *bprm, unsigned long pos,
794 struct tomoyo_page_dump *dump);
795 bool tomoyo_memory_ok(void *ptr);
796 bool tomoyo_number_matches_group(const unsigned long min,
797 const unsigned long max,
798 const struct tomoyo_group *group);
799 bool tomoyo_parse_name_union(struct tomoyo_acl_param *param,
800 struct tomoyo_name_union *ptr);
801 bool tomoyo_parse_number_union(struct tomoyo_acl_param *param,
802 struct tomoyo_number_union *ptr);
803 bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
804 const struct tomoyo_path_info *pattern);
805 bool tomoyo_permstr(const char *string, const char *keyword);
806 bool tomoyo_str_starts(char **src, const char *find);
807 char *tomoyo_encode(const char *str);
808 char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
810 char *tomoyo_read_token(struct tomoyo_acl_param *param);
811 char *tomoyo_realpath_from_path(struct path *path);
812 char *tomoyo_realpath_nofollow(const char *pathname);
813 const char *tomoyo_get_exe(void);
814 const char *tomoyo_yesno(const unsigned int value);
815 const struct tomoyo_path_info *tomoyo_compare_name_union
816 (const struct tomoyo_path_info *name, const struct tomoyo_name_union *ptr);
817 const struct tomoyo_path_info *tomoyo_get_name(const char *name);
818 const struct tomoyo_path_info *tomoyo_path_matches_group
819 (const struct tomoyo_path_info *pathname, const struct tomoyo_group *group);
820 int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
821 struct path *path, const int flag);
822 int tomoyo_close_control(struct tomoyo_io_buffer *head);
823 int tomoyo_find_next_domain(struct linux_binprm *bprm);
824 int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile,
826 int tomoyo_init_request_info(struct tomoyo_request_info *r,
827 struct tomoyo_domain_info *domain,
829 int tomoyo_mkdev_perm(const u8 operation, struct path *path,
830 const unsigned int mode, unsigned int dev);
831 int tomoyo_mount_permission(char *dev_name, struct path *path,
832 const char *type, unsigned long flags,
834 int tomoyo_open_control(const u8 type, struct file *file);
835 int tomoyo_path2_perm(const u8 operation, struct path *path1,
837 int tomoyo_path_number_perm(const u8 operation, struct path *path,
838 unsigned long number);
839 int tomoyo_path_perm(const u8 operation, struct path *path,
841 int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
842 const struct tomoyo_path_info *filename);
843 int tomoyo_poll_control(struct file *file, poll_table *wait);
844 int tomoyo_poll_log(struct file *file, poll_table *wait);
845 int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
847 int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size,
848 struct tomoyo_acl_param *param,
849 bool (*check_duplicate)
850 (const struct tomoyo_acl_info *,
851 const struct tomoyo_acl_info *),
852 bool (*merge_duplicate)
853 (struct tomoyo_acl_info *, struct tomoyo_acl_info *,
855 int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size,
856 struct tomoyo_acl_param *param,
857 bool (*check_duplicate)
858 (const struct tomoyo_acl_head *,
859 const struct tomoyo_acl_head *));
860 int tomoyo_write_aggregator(struct tomoyo_acl_param *param);
861 int tomoyo_write_file(struct tomoyo_acl_param *param);
862 int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type);
863 int tomoyo_write_transition_control(struct tomoyo_acl_param *param,
865 ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer,
866 const int buffer_len);
867 ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head,
868 const char __user *buffer, const int buffer_len);
869 struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param);
870 struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
872 struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname);
873 struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param,
875 struct tomoyo_policy_namespace *tomoyo_assign_namespace
876 (const char *domainname);
877 struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns,
879 unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
881 u8 tomoyo_parse_ulong(unsigned long *result, char **str);
882 void *tomoyo_commit_ok(void *data, const unsigned int size);
883 void __init tomoyo_load_builtin_policy(void);
884 void __init tomoyo_mm_init(void);
885 void tomoyo_check_acl(struct tomoyo_request_info *r,
886 bool (*check_entry) (struct tomoyo_request_info *,
887 const struct tomoyo_acl_info *));
888 void tomoyo_check_profile(void);
889 void tomoyo_convert_time(time_t time, struct tomoyo_time *stamp);
890 void tomoyo_del_condition(struct list_head *element);
891 void tomoyo_fill_path_info(struct tomoyo_path_info *ptr);
892 void tomoyo_get_attributes(struct tomoyo_obj_info *obj);
893 void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns);
894 void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...)
896 void tomoyo_load_policy(const char *filename);
897 void tomoyo_memory_free(void *ptr);
898 void tomoyo_normalize_line(unsigned char *buffer);
899 void tomoyo_notify_gc(struct tomoyo_io_buffer *head, const bool is_register);
900 void tomoyo_print_ulong(char *buffer, const int buffer_len,
901 const unsigned long value, const u8 type);
902 void tomoyo_put_name_union(struct tomoyo_name_union *ptr);
903 void tomoyo_put_number_union(struct tomoyo_number_union *ptr);
904 void tomoyo_read_log(struct tomoyo_io_buffer *head);
905 void tomoyo_update_stat(const u8 index);
906 void tomoyo_warn_oom(const char *function);
907 void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...)
909 void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt,
912 /********** External variable definitions. **********/
914 extern bool tomoyo_policy_loaded;
915 extern const char * const tomoyo_condition_keyword
916 [TOMOYO_MAX_CONDITION_KEYWORD];
917 extern const char * const tomoyo_dif[TOMOYO_MAX_DOMAIN_INFO_FLAGS];
918 extern const char * const tomoyo_mac_keywords[TOMOYO_MAX_MAC_INDEX
919 + TOMOYO_MAX_MAC_CATEGORY_INDEX];
920 extern const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE];
921 extern const char * const tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION];
922 extern const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX];
923 extern const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION];
924 extern const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION];
925 extern const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION];
926 extern struct list_head tomoyo_condition_list;
927 extern struct list_head tomoyo_domain_list;
928 extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];
929 extern struct list_head tomoyo_namespace_list;
930 extern struct mutex tomoyo_policy_lock;
931 extern struct srcu_struct tomoyo_ss;
932 extern struct tomoyo_domain_info tomoyo_kernel_domain;
933 extern struct tomoyo_policy_namespace tomoyo_kernel_namespace;
934 extern unsigned int tomoyo_memory_quota[TOMOYO_MAX_MEMORY_STAT];
935 extern unsigned int tomoyo_memory_used[TOMOYO_MAX_MEMORY_STAT];
937 /********** Inlined functions. **********/
940 * tomoyo_read_lock - Take lock for protecting policy.
942 * Returns index number for tomoyo_read_unlock().
944 static inline int tomoyo_read_lock(void)
946 return srcu_read_lock(&tomoyo_ss);
950 * tomoyo_read_unlock - Release lock for protecting policy.
952 * @idx: Index number returned by tomoyo_read_lock().
956 static inline void tomoyo_read_unlock(int idx)
958 srcu_read_unlock(&tomoyo_ss, idx);
962 * tomoyo_sys_getppid - Copy of getppid().
964 * Returns parent process's PID.
966 * Alpha does not have getppid() defined. To be able to build this module on
967 * Alpha, I have to copy getppid() from kernel/timer.c.
969 static inline pid_t tomoyo_sys_getppid(void)
973 pid = task_tgid_vnr(current->real_parent);
979 * tomoyo_sys_getpid - Copy of getpid().
981 * Returns current thread's PID.
983 * Alpha does not have getpid() defined. To be able to build this module on
984 * Alpha, I have to copy getpid() from kernel/timer.c.
986 static inline pid_t tomoyo_sys_getpid(void)
988 return task_tgid_vnr(current);
992 * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure.
994 * @a: Pointer to "struct tomoyo_path_info".
995 * @b: Pointer to "struct tomoyo_path_info".
997 * Returns true if @a == @b, false otherwise.
999 static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a,
1000 const struct tomoyo_path_info *b)
1002 return a->hash != b->hash || strcmp(a->name, b->name);
1006 * tomoyo_put_name - Drop reference on "struct tomoyo_name".
1008 * @name: Pointer to "struct tomoyo_path_info". Maybe NULL.
1012 static inline void tomoyo_put_name(const struct tomoyo_path_info *name)
1015 struct tomoyo_name *ptr =
1016 container_of(name, typeof(*ptr), entry);
1017 atomic_dec(&ptr->head.users);
1022 * tomoyo_put_condition - Drop reference on "struct tomoyo_condition".
1024 * @cond: Pointer to "struct tomoyo_condition". Maybe NULL.
1028 static inline void tomoyo_put_condition(struct tomoyo_condition *cond)
1031 atomic_dec(&cond->head.users);
1035 * tomoyo_put_group - Drop reference on "struct tomoyo_group".
1037 * @group: Pointer to "struct tomoyo_group". Maybe NULL.
1041 static inline void tomoyo_put_group(struct tomoyo_group *group)
1044 atomic_dec(&group->head.users);
1048 * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread.
1050 * Returns pointer to "struct tomoyo_domain_info" for current thread.
1052 static inline struct tomoyo_domain_info *tomoyo_domain(void)
1054 return current_cred()->security;
1058 * tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread.
1060 * @task: Pointer to "struct task_struct".
1062 * Returns pointer to "struct tomoyo_security" for specified thread.
1064 static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
1067 return task_cred_xxx(task, security);
1071 * tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry.
1073 * @a: Pointer to "struct tomoyo_name_union".
1074 * @b: Pointer to "struct tomoyo_name_union".
1076 * Returns true if @a == @b, false otherwise.
1078 static inline bool tomoyo_same_name_union
1079 (const struct tomoyo_name_union *a, const struct tomoyo_name_union *b)
1081 return a->filename == b->filename && a->group == b->group;
1085 * tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry.
1087 * @a: Pointer to "struct tomoyo_number_union".
1088 * @b: Pointer to "struct tomoyo_number_union".
1090 * Returns true if @a == @b, false otherwise.
1092 static inline bool tomoyo_same_number_union
1093 (const struct tomoyo_number_union *a, const struct tomoyo_number_union *b)
1095 return a->values[0] == b->values[0] && a->values[1] == b->values[1] &&
1096 a->group == b->group && a->value_type[0] == b->value_type[0] &&
1097 a->value_type[1] == b->value_type[1];
1101 * tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread.
1103 * Returns pointer to "struct tomoyo_policy_namespace" for current thread.
1105 static inline struct tomoyo_policy_namespace *tomoyo_current_namespace(void)
1107 return tomoyo_domain()->ns;
1110 #if defined(CONFIG_SLOB)
1113 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
1115 * @size: Size to be rounded up.
1119 * Since SLOB does not round up, this function simply returns @size.
1121 static inline int tomoyo_round2(size_t size)
1129 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
1131 * @size: Size to be rounded up.
1133 * Returns rounded size.
1135 * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of
1138 static inline int tomoyo_round2(size_t size)
1140 #if PAGE_SIZE == 4096
1147 while (size > bsize)
1155 * list_for_each_cookie - iterate over a list with cookie.
1156 * @pos: the &struct list_head to use as a loop cursor.
1157 * @head: the head for your list.
1159 #define list_for_each_cookie(pos, head) \
1161 pos = srcu_dereference((head)->next, &tomoyo_ss); \
1162 for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss))
1164 #endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */