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>
26 /********** Constants definitions. **********/
29 * TOMOYO uses this hash only when appending a string into the string
30 * table. Frequency of appending strings is very low. So we don't need
31 * large (e.g. 64k) hash size. 256 will be sufficient.
33 #define TOMOYO_HASH_BITS 8
34 #define TOMOYO_MAX_HASH (1u<<TOMOYO_HASH_BITS)
36 #define TOMOYO_EXEC_TMPSIZE 4096
38 /* Profile number is an integer between 0 and 255. */
39 #define TOMOYO_MAX_PROFILES 256
41 /* Group number is an integer between 0 and 255. */
42 #define TOMOYO_MAX_ACL_GROUPS 256
44 /* Index numbers for operation mode. */
45 enum tomoyo_mode_index
{
46 TOMOYO_CONFIG_DISABLED
,
47 TOMOYO_CONFIG_LEARNING
,
48 TOMOYO_CONFIG_PERMISSIVE
,
49 TOMOYO_CONFIG_ENFORCING
,
50 TOMOYO_CONFIG_MAX_MODE
,
51 TOMOYO_CONFIG_WANT_REJECT_LOG
= 64,
52 TOMOYO_CONFIG_WANT_GRANT_LOG
= 128,
53 TOMOYO_CONFIG_USE_DEFAULT
= 255,
56 /* Index numbers for entry type. */
57 enum tomoyo_policy_id
{
60 TOMOYO_ID_NUMBER_GROUP
,
61 TOMOYO_ID_TRANSITION_CONTROL
,
70 /* Index numbers for domain's attributes. */
71 enum tomoyo_domain_info_flags_index
{
72 /* Quota warnning flag. */
73 TOMOYO_DIF_QUOTA_WARNED
,
75 * This domain was unable to create a new domain at
76 * tomoyo_find_next_domain() because the name of the domain to be
77 * created was too long or it could not allocate memory.
78 * More than one process continued execve() without domain transition.
80 TOMOYO_DIF_TRANSITION_FAILED
,
81 TOMOYO_MAX_DOMAIN_INFO_FLAGS
84 /* Index numbers for group entries. */
85 enum tomoyo_group_id
{
91 /* Index numbers for type of numeric values. */
92 enum tomoyo_value_type
{
93 TOMOYO_VALUE_TYPE_INVALID
,
94 TOMOYO_VALUE_TYPE_DECIMAL
,
95 TOMOYO_VALUE_TYPE_OCTAL
,
96 TOMOYO_VALUE_TYPE_HEXADECIMAL
,
99 /* Index numbers for domain transition control keywords. */
100 enum tomoyo_transition_type
{
101 /* Do not change this order, */
102 TOMOYO_TRANSITION_CONTROL_NO_RESET
,
103 TOMOYO_TRANSITION_CONTROL_RESET
,
104 TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE
,
105 TOMOYO_TRANSITION_CONTROL_INITIALIZE
,
106 TOMOYO_TRANSITION_CONTROL_NO_KEEP
,
107 TOMOYO_TRANSITION_CONTROL_KEEP
,
108 TOMOYO_MAX_TRANSITION_TYPE
111 /* Index numbers for Access Controls. */
112 enum tomoyo_acl_entry_type_index
{
113 TOMOYO_TYPE_PATH_ACL
,
114 TOMOYO_TYPE_PATH2_ACL
,
115 TOMOYO_TYPE_PATH_NUMBER_ACL
,
116 TOMOYO_TYPE_MKDEV_ACL
,
117 TOMOYO_TYPE_MOUNT_ACL
,
120 /* Index numbers for access controls with one pathname. */
121 enum tomoyo_path_acl_index
{
129 TOMOYO_TYPE_TRUNCATE
,
133 TOMOYO_MAX_PATH_OPERATION
136 /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
137 enum tomoyo_memory_stat_type
{
138 TOMOYO_MEMORY_POLICY
,
141 TOMOYO_MAX_MEMORY_STAT
144 enum tomoyo_mkdev_acl_index
{
147 TOMOYO_MAX_MKDEV_OPERATION
150 /* Index numbers for access controls with two pathnames. */
151 enum tomoyo_path2_acl_index
{
154 TOMOYO_TYPE_PIVOT_ROOT
,
155 TOMOYO_MAX_PATH2_OPERATION
158 /* Index numbers for access controls with one pathname and one number. */
159 enum tomoyo_path_number_acl_index
{
168 TOMOYO_MAX_PATH_NUMBER_OPERATION
171 /* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */
172 enum tomoyo_securityfs_interface_index
{
174 TOMOYO_EXCEPTIONPOLICY
,
175 TOMOYO_DOMAIN_STATUS
,
176 TOMOYO_PROCESS_STATUS
,
186 /* Index numbers for special mount operations. */
187 enum tomoyo_special_mount
{
188 TOMOYO_MOUNT_BIND
, /* mount --bind /source /dest */
189 TOMOYO_MOUNT_MOVE
, /* mount --move /old /new */
190 TOMOYO_MOUNT_REMOUNT
, /* mount -o remount /dir */
191 TOMOYO_MOUNT_MAKE_UNBINDABLE
, /* mount --make-unbindable /dir */
192 TOMOYO_MOUNT_MAKE_PRIVATE
, /* mount --make-private /dir */
193 TOMOYO_MOUNT_MAKE_SLAVE
, /* mount --make-slave /dir */
194 TOMOYO_MOUNT_MAKE_SHARED
, /* mount --make-shared /dir */
195 TOMOYO_MAX_SPECIAL_MOUNT
198 /* Index numbers for functionality. */
199 enum tomoyo_mac_index
{
200 TOMOYO_MAC_FILE_EXECUTE
,
201 TOMOYO_MAC_FILE_OPEN
,
202 TOMOYO_MAC_FILE_CREATE
,
203 TOMOYO_MAC_FILE_UNLINK
,
204 TOMOYO_MAC_FILE_GETATTR
,
205 TOMOYO_MAC_FILE_MKDIR
,
206 TOMOYO_MAC_FILE_RMDIR
,
207 TOMOYO_MAC_FILE_MKFIFO
,
208 TOMOYO_MAC_FILE_MKSOCK
,
209 TOMOYO_MAC_FILE_TRUNCATE
,
210 TOMOYO_MAC_FILE_SYMLINK
,
211 TOMOYO_MAC_FILE_MKBLOCK
,
212 TOMOYO_MAC_FILE_MKCHAR
,
213 TOMOYO_MAC_FILE_LINK
,
214 TOMOYO_MAC_FILE_RENAME
,
215 TOMOYO_MAC_FILE_CHMOD
,
216 TOMOYO_MAC_FILE_CHOWN
,
217 TOMOYO_MAC_FILE_CHGRP
,
218 TOMOYO_MAC_FILE_IOCTL
,
219 TOMOYO_MAC_FILE_CHROOT
,
220 TOMOYO_MAC_FILE_MOUNT
,
221 TOMOYO_MAC_FILE_UMOUNT
,
222 TOMOYO_MAC_FILE_PIVOT_ROOT
,
226 /* Index numbers for category of functionality. */
227 enum tomoyo_mac_category_index
{
228 TOMOYO_MAC_CATEGORY_FILE
,
229 TOMOYO_MAX_MAC_CATEGORY_INDEX
233 * Retry this request. Returned by tomoyo_supervisor() if policy violation has
234 * occurred in enforcing mode and the userspace daemon decided to retry.
236 * We must choose a positive value in order to distinguish "granted" (which is
237 * 0) and "rejected" (which is a negative value) and "retry".
239 #define TOMOYO_RETRY_REQUEST 1
241 /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
242 enum tomoyo_policy_stat_type
{
243 /* Do not change this order. */
244 TOMOYO_STAT_POLICY_UPDATES
,
245 TOMOYO_STAT_POLICY_LEARNING
, /* == TOMOYO_CONFIG_LEARNING */
246 TOMOYO_STAT_POLICY_PERMISSIVE
, /* == TOMOYO_CONFIG_PERMISSIVE */
247 TOMOYO_STAT_POLICY_ENFORCING
, /* == TOMOYO_CONFIG_ENFORCING */
248 TOMOYO_MAX_POLICY_STAT
251 /* Index numbers for profile's PREFERENCE values. */
252 enum tomoyo_pref_index
{
253 TOMOYO_PREF_MAX_AUDIT_LOG
,
254 TOMOYO_PREF_MAX_LEARNING_ENTRY
,
258 /********** Structure definitions. **********/
260 /* Common header for holding ACL entries. */
261 struct tomoyo_acl_head
{
262 struct list_head list
;
266 /* Common header for shared entries. */
267 struct tomoyo_shared_acl_head
{
268 struct list_head list
;
272 struct tomoyo_policy_namespace
;
274 /* Structure for request info. */
275 struct tomoyo_request_info
{
276 struct tomoyo_domain_info
*domain
;
277 /* For holding parameters. */
280 const struct tomoyo_path_info
*filename
;
281 /* For using wildcards at tomoyo_find_next_domain(). */
282 const struct tomoyo_path_info
*matched_path
;
283 /* One of values in "enum tomoyo_path_acl_index". */
287 const struct tomoyo_path_info
*filename1
;
288 const struct tomoyo_path_info
*filename2
;
289 /* One of values in "enum tomoyo_path2_acl_index". */
293 const struct tomoyo_path_info
*filename
;
297 /* One of values in "enum tomoyo_mkdev_acl_index". */
301 const struct tomoyo_path_info
*filename
;
302 unsigned long number
;
305 * "enum tomoyo_path_number_acl_index".
310 const struct tomoyo_path_info
*type
;
311 const struct tomoyo_path_info
*dir
;
312 const struct tomoyo_path_info
*dev
;
321 u8 mode
; /* One of tomoyo_mode_index . */
325 /* Structure for holding a token. */
326 struct tomoyo_path_info
{
328 u32 hash
; /* = full_name_hash(name, strlen(name)) */
329 u16 const_len
; /* = tomoyo_const_part_length(name) */
330 bool is_dir
; /* = tomoyo_strendswith(name, "/") */
331 bool is_patterned
; /* = tomoyo_path_contains_pattern(name) */
334 /* Structure for holding string data. */
336 struct tomoyo_shared_acl_head head
;
337 struct tomoyo_path_info entry
;
340 /* Structure for holding a word. */
341 struct tomoyo_name_union
{
342 /* Either @filename or @group is NULL. */
343 const struct tomoyo_path_info
*filename
;
344 struct tomoyo_group
*group
;
347 /* Structure for holding a number. */
348 struct tomoyo_number_union
{
349 unsigned long values
[2];
350 struct tomoyo_group
*group
; /* Maybe NULL. */
351 /* One of values in "enum tomoyo_value_type". */
355 /* Structure for "path_group"/"number_group" directive. */
356 struct tomoyo_group
{
357 struct tomoyo_shared_acl_head head
;
358 const struct tomoyo_path_info
*group_name
;
359 struct list_head member_list
;
362 /* Structure for "path_group" directive. */
363 struct tomoyo_path_group
{
364 struct tomoyo_acl_head head
;
365 const struct tomoyo_path_info
*member_name
;
368 /* Structure for "number_group" directive. */
369 struct tomoyo_number_group
{
370 struct tomoyo_acl_head head
;
371 struct tomoyo_number_union number
;
374 /* Common header for individual entries. */
375 struct tomoyo_acl_info
{
376 struct list_head list
;
378 u8 type
; /* One of values in "enum tomoyo_acl_entry_type_index". */
381 /* Structure for domain information. */
382 struct tomoyo_domain_info
{
383 struct list_head list
;
384 struct list_head acl_info_list
;
385 /* Name of this domain. Never NULL. */
386 const struct tomoyo_path_info
*domainname
;
387 /* Namespace for this domain. Never NULL. */
388 struct tomoyo_policy_namespace
*ns
;
389 u8 profile
; /* Profile number to use. */
390 u8 group
; /* Group number to use. */
391 bool is_deleted
; /* Delete flag. */
392 bool flags
[TOMOYO_MAX_DOMAIN_INFO_FLAGS
];
393 atomic_t users
; /* Number of referring credentials. */
397 * Structure for "file execute", "file read", "file write", "file append",
398 * "file unlink", "file getattr", "file rmdir", "file truncate",
399 * "file symlink", "file chroot" and "file unmount" directive.
401 struct tomoyo_path_acl
{
402 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_PATH_ACL */
403 u16 perm
; /* Bitmask of values in "enum tomoyo_path_acl_index". */
404 struct tomoyo_name_union name
;
408 * Structure for "file create", "file mkdir", "file mkfifo", "file mksock",
409 * "file ioctl", "file chmod", "file chown" and "file chgrp" directive.
411 struct tomoyo_path_number_acl
{
412 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */
413 /* Bitmask of values in "enum tomoyo_path_number_acl_index". */
415 struct tomoyo_name_union name
;
416 struct tomoyo_number_union number
;
419 /* Structure for "file mkblock" and "file mkchar" directive. */
420 struct tomoyo_mkdev_acl
{
421 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_MKDEV_ACL */
422 u8 perm
; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */
423 struct tomoyo_name_union name
;
424 struct tomoyo_number_union mode
;
425 struct tomoyo_number_union major
;
426 struct tomoyo_number_union minor
;
430 * Structure for "file rename", "file link" and "file pivot_root" directive.
432 struct tomoyo_path2_acl
{
433 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_PATH2_ACL */
434 u8 perm
; /* Bitmask of values in "enum tomoyo_path2_acl_index". */
435 struct tomoyo_name_union name1
;
436 struct tomoyo_name_union name2
;
439 /* Structure for "file mount" directive. */
440 struct tomoyo_mount_acl
{
441 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_MOUNT_ACL */
442 struct tomoyo_name_union dev_name
;
443 struct tomoyo_name_union dir_name
;
444 struct tomoyo_name_union fs_type
;
445 struct tomoyo_number_union flags
;
448 /* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */
449 struct tomoyo_acl_param
{
451 struct list_head
*list
;
452 struct tomoyo_policy_namespace
*ns
;
456 #define TOMOYO_MAX_IO_READ_QUEUE 64
459 * Structure for reading/writing policy via /sys/kernel/security/tomoyo
462 struct tomoyo_io_buffer
{
463 void (*read
) (struct tomoyo_io_buffer
*);
464 int (*write
) (struct tomoyo_io_buffer
*);
465 int (*poll
) (struct file
*file
, poll_table
*wait
);
466 /* Exclusive lock for this structure. */
468 char __user
*read_user_buf
;
469 size_t read_user_buf_avail
;
471 struct list_head
*ns
;
472 struct list_head
*domain
;
473 struct list_head
*group
;
474 struct list_head
*acl
;
477 unsigned int query_index
;
483 bool print_this_domain_only
;
484 bool print_transition_related_only
;
485 const char *w
[TOMOYO_MAX_IO_READ_QUEUE
];
488 struct tomoyo_policy_namespace
*ns
;
489 /* The position currently writing to. */
490 struct tomoyo_domain_info
*domain
;
491 /* Bytes available for writing. */
495 /* Buffer for reading. */
497 /* Size of read buffer. */
499 /* Buffer for writing. */
501 /* Size of write buffer. */
502 size_t writebuf_size
;
503 /* Type of this interface. */
504 enum tomoyo_securityfs_interface_index type
;
505 /* Users counter protected by tomoyo_io_buffer_list_lock. */
507 /* List for telling GC not to kfree() elements. */
508 struct list_head list
;
512 * Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/
513 * "no_keep_domain" keyword.
515 struct tomoyo_transition_control
{
516 struct tomoyo_acl_head head
;
517 u8 type
; /* One of values in "enum tomoyo_transition_type". */
518 /* True if the domainname is tomoyo_get_last_name(). */
520 const struct tomoyo_path_info
*domainname
; /* Maybe NULL */
521 const struct tomoyo_path_info
*program
; /* Maybe NULL */
524 /* Structure for "aggregator" keyword. */
525 struct tomoyo_aggregator
{
526 struct tomoyo_acl_head head
;
527 const struct tomoyo_path_info
*original_name
;
528 const struct tomoyo_path_info
*aggregated_name
;
531 /* Structure for policy manager. */
532 struct tomoyo_manager
{
533 struct tomoyo_acl_head head
;
534 bool is_domain
; /* True if manager is a domainname. */
535 /* A path to program or a domainname. */
536 const struct tomoyo_path_info
*manager
;
539 struct tomoyo_preference
{
540 unsigned int learning_max_entry
;
541 bool enforcing_verbose
;
542 bool learning_verbose
;
543 bool permissive_verbose
;
546 /* Structure for /sys/kernel/security/tomnoyo/profile interface. */
547 struct tomoyo_profile
{
548 const struct tomoyo_path_info
*comment
;
549 struct tomoyo_preference
*learning
;
550 struct tomoyo_preference
*permissive
;
551 struct tomoyo_preference
*enforcing
;
552 struct tomoyo_preference preference
;
554 u8 config
[TOMOYO_MAX_MAC_INDEX
+ TOMOYO_MAX_MAC_CATEGORY_INDEX
];
555 unsigned int pref
[TOMOYO_MAX_PREF
];
558 /* Structure for representing YYYY/MM/DD hh/mm/ss. */
568 /* Structure for policy namespace. */
569 struct tomoyo_policy_namespace
{
570 /* Profile table. Memory is allocated as needed. */
571 struct tomoyo_profile
*profile_ptr
[TOMOYO_MAX_PROFILES
];
572 /* List of "struct tomoyo_group". */
573 struct list_head group_list
[TOMOYO_MAX_GROUP
];
574 /* List of policy. */
575 struct list_head policy_list
[TOMOYO_MAX_POLICY
];
576 /* The global ACL referred by "use_group" keyword. */
577 struct list_head acl_group
[TOMOYO_MAX_ACL_GROUPS
];
578 /* List for connecting to tomoyo_namespace_list list. */
579 struct list_head namespace_list
;
580 /* Profile version. Currently only 20100903 is defined. */
581 unsigned int profile_version
;
582 /* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */
586 /********** Function prototypes. **********/
588 void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace
*ns
);
589 bool tomoyo_str_starts(char **src
, const char *find
);
590 const char *tomoyo_get_exe(void);
591 void tomoyo_normalize_line(unsigned char *buffer
);
592 void tomoyo_check_profile(void);
593 int tomoyo_open_control(const u8 type
, struct file
*file
);
594 int tomoyo_close_control(struct tomoyo_io_buffer
*head
);
595 int tomoyo_poll_control(struct file
*file
, poll_table
*wait
);
596 ssize_t
tomoyo_read_control(struct tomoyo_io_buffer
*head
, char __user
*buffer
,
597 const int buffer_len
);
598 ssize_t
tomoyo_write_control(struct tomoyo_io_buffer
*head
,
599 const char __user
*buffer
, const int buffer_len
);
600 bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info
*r
);
601 void tomoyo_warn_oom(const char *function
);
602 const struct tomoyo_path_info
*
603 tomoyo_compare_name_union(const struct tomoyo_path_info
*name
,
604 const struct tomoyo_name_union
*ptr
);
605 bool tomoyo_compare_number_union(const unsigned long value
,
606 const struct tomoyo_number_union
*ptr
);
607 int tomoyo_get_mode(const struct tomoyo_policy_namespace
*ns
, const u8 profile
,
609 void tomoyo_io_printf(struct tomoyo_io_buffer
*head
, const char *fmt
, ...)
610 __attribute__ ((format(printf
, 2, 3)));
611 bool tomoyo_correct_domain(const unsigned char *domainname
);
612 bool tomoyo_correct_path(const char *filename
);
613 bool tomoyo_correct_word(const char *string
);
614 bool tomoyo_domain_def(const unsigned char *buffer
);
615 bool tomoyo_parse_name_union(struct tomoyo_acl_param
*param
,
616 struct tomoyo_name_union
*ptr
);
617 const struct tomoyo_path_info
*
618 tomoyo_path_matches_group(const struct tomoyo_path_info
*pathname
,
619 const struct tomoyo_group
*group
);
620 bool tomoyo_number_matches_group(const unsigned long min
,
621 const unsigned long max
,
622 const struct tomoyo_group
*group
);
623 bool tomoyo_path_matches_pattern(const struct tomoyo_path_info
*filename
,
624 const struct tomoyo_path_info
*pattern
);
625 bool tomoyo_parse_number_union(struct tomoyo_acl_param
*param
,
626 struct tomoyo_number_union
*ptr
);
627 bool tomoyo_tokenize(char *buffer
, char *w
[], size_t size
);
628 bool tomoyo_verbose_mode(const struct tomoyo_domain_info
*domain
);
629 int tomoyo_init_request_info(struct tomoyo_request_info
*r
,
630 struct tomoyo_domain_info
*domain
,
632 int tomoyo_mount_permission(char *dev_name
, struct path
*path
,
633 const char *type
, unsigned long flags
,
635 int tomoyo_write_aggregator(struct tomoyo_acl_param
*param
);
636 int tomoyo_write_transition_control(struct tomoyo_acl_param
*param
,
638 int tomoyo_write_file(struct tomoyo_acl_param
*param
);
639 int tomoyo_write_group(struct tomoyo_acl_param
*param
, const u8 type
);
640 int tomoyo_supervisor(struct tomoyo_request_info
*r
, const char *fmt
, ...)
641 __attribute__ ((format(printf
, 2, 3)));
642 struct tomoyo_domain_info
*tomoyo_find_domain(const char *domainname
);
643 struct tomoyo_domain_info
*tomoyo_assign_domain(const char *domainname
,
645 struct tomoyo_profile
*tomoyo_profile(const struct tomoyo_policy_namespace
*ns
,
647 struct tomoyo_policy_namespace
*tomoyo_assign_namespace
648 (const char *domainname
);
649 struct tomoyo_group
*tomoyo_get_group(struct tomoyo_acl_param
*param
,
651 unsigned int tomoyo_check_flags(const struct tomoyo_domain_info
*domain
,
653 void tomoyo_fill_path_info(struct tomoyo_path_info
*ptr
);
654 void tomoyo_load_policy(const char *filename
);
655 void tomoyo_put_number_union(struct tomoyo_number_union
*ptr
);
656 char *tomoyo_encode(const char *str
);
657 char *tomoyo_realpath_nofollow(const char *pathname
);
658 char *tomoyo_realpath_from_path(struct path
*path
);
659 bool tomoyo_memory_ok(void *ptr
);
660 void *tomoyo_commit_ok(void *data
, const unsigned int size
);
661 const struct tomoyo_path_info
*tomoyo_get_name(const char *name
);
662 void tomoyo_convert_time(time_t time
, struct tomoyo_time
*stamp
);
663 void tomoyo_update_stat(const u8 index
);
664 void __init
tomoyo_mm_init(void);
665 int tomoyo_path_permission(struct tomoyo_request_info
*r
, u8 operation
,
666 const struct tomoyo_path_info
*filename
);
667 int tomoyo_check_open_permission(struct tomoyo_domain_info
*domain
,
668 struct path
*path
, const int flag
);
669 int tomoyo_path_number_perm(const u8 operation
, struct path
*path
,
670 unsigned long number
);
671 int tomoyo_mkdev_perm(const u8 operation
, struct path
*path
,
672 const unsigned int mode
, unsigned int dev
);
673 int tomoyo_path_perm(const u8 operation
, struct path
*path
);
674 int tomoyo_path2_perm(const u8 operation
, struct path
*path1
,
676 int tomoyo_find_next_domain(struct linux_binprm
*bprm
);
677 void tomoyo_print_ulong(char *buffer
, const int buffer_len
,
678 const unsigned long value
, const u8 type
);
679 void tomoyo_put_name_union(struct tomoyo_name_union
*ptr
);
680 void tomoyo_notify_gc(struct tomoyo_io_buffer
*head
, const bool is_register
);
681 void tomoyo_memory_free(void *ptr
);
682 int tomoyo_update_domain(struct tomoyo_acl_info
*new_entry
, const int size
,
683 struct tomoyo_acl_param
*param
,
684 bool (*check_duplicate
) (const struct tomoyo_acl_info
686 const struct tomoyo_acl_info
688 bool (*merge_duplicate
) (struct tomoyo_acl_info
*,
689 struct tomoyo_acl_info
*,
691 int tomoyo_update_policy(struct tomoyo_acl_head
*new_entry
, const int size
,
692 struct tomoyo_acl_param
*param
,
693 bool (*check_duplicate
) (const struct tomoyo_acl_head
695 const struct tomoyo_acl_head
697 void tomoyo_check_acl(struct tomoyo_request_info
*r
,
698 bool (*check_entry
) (struct tomoyo_request_info
*,
699 const struct tomoyo_acl_info
*));
700 char *tomoyo_read_token(struct tomoyo_acl_param
*param
);
701 bool tomoyo_permstr(const char *string
, const char *keyword
);
703 const char *tomoyo_yesno(const unsigned int value
);
704 void tomoyo_write_log(struct tomoyo_request_info
*r
, const char *fmt
, ...)
705 __attribute__ ((format(printf
, 2, 3)));
706 void tomoyo_write_log2(struct tomoyo_request_info
*r
, int len
, const char *fmt
,
708 void tomoyo_read_log(struct tomoyo_io_buffer
*head
);
709 int tomoyo_poll_log(struct file
*file
, poll_table
*wait
);
710 char *tomoyo_init_log(struct tomoyo_request_info
*r
, int len
, const char *fmt
,
713 /********** External variable definitions. **********/
716 extern struct srcu_struct tomoyo_ss
;
718 /* The list for "struct tomoyo_domain_info". */
719 extern struct list_head tomoyo_domain_list
;
721 extern struct list_head tomoyo_name_list
[TOMOYO_MAX_HASH
];
723 /* Lock for protecting policy. */
724 extern struct mutex tomoyo_policy_lock
;
726 /* Has /sbin/init started? */
727 extern bool tomoyo_policy_loaded
;
729 /* The kernel's domain. */
730 extern struct tomoyo_domain_info tomoyo_kernel_domain
;
731 extern struct tomoyo_policy_namespace tomoyo_kernel_namespace
;
732 extern struct list_head tomoyo_namespace_list
;
734 extern const char * const tomoyo_mac_keywords
[TOMOYO_MAX_MAC_INDEX
+
735 TOMOYO_MAX_MAC_CATEGORY_INDEX
];
736 extern const char * const tomoyo_path_keyword
[TOMOYO_MAX_PATH_OPERATION
];
737 extern const u8 tomoyo_index2category
[TOMOYO_MAX_MAC_INDEX
];
740 extern const u8 tomoyo_pnnn2mac
[TOMOYO_MAX_MKDEV_OPERATION
];
741 extern const u8 tomoyo_pp2mac
[TOMOYO_MAX_PATH2_OPERATION
];
742 extern const u8 tomoyo_pn2mac
[TOMOYO_MAX_PATH_NUMBER_OPERATION
];
744 extern const char * const tomoyo_dif
[TOMOYO_MAX_DOMAIN_INFO_FLAGS
];
745 extern const char * const tomoyo_mode
[TOMOYO_CONFIG_MAX_MODE
];
746 extern unsigned int tomoyo_memory_quota
[TOMOYO_MAX_MEMORY_STAT
];
747 extern unsigned int tomoyo_memory_used
[TOMOYO_MAX_MEMORY_STAT
];
749 /********** Inlined functions. **********/
752 * tomoyo_read_lock - Take lock for protecting policy.
754 * Returns index number for tomoyo_read_unlock().
756 static inline int tomoyo_read_lock(void)
758 return srcu_read_lock(&tomoyo_ss
);
762 * tomoyo_read_unlock - Release lock for protecting policy.
764 * @idx: Index number returned by tomoyo_read_lock().
768 static inline void tomoyo_read_unlock(int idx
)
770 srcu_read_unlock(&tomoyo_ss
, idx
);
774 * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure.
776 * @a: Pointer to "struct tomoyo_path_info".
777 * @b: Pointer to "struct tomoyo_path_info".
779 * Returns true if @a == @b, false otherwise.
781 static inline bool tomoyo_pathcmp(const struct tomoyo_path_info
*a
,
782 const struct tomoyo_path_info
*b
)
784 return a
->hash
!= b
->hash
|| strcmp(a
->name
, b
->name
);
788 * tomoyo_put_name - Drop reference on "struct tomoyo_name".
790 * @name: Pointer to "struct tomoyo_path_info". Maybe NULL.
794 static inline void tomoyo_put_name(const struct tomoyo_path_info
*name
)
797 struct tomoyo_name
*ptr
=
798 container_of(name
, typeof(*ptr
), entry
);
799 atomic_dec(&ptr
->head
.users
);
804 * tomoyo_put_group - Drop reference on "struct tomoyo_group".
806 * @group: Pointer to "struct tomoyo_group". Maybe NULL.
810 static inline void tomoyo_put_group(struct tomoyo_group
*group
)
813 atomic_dec(&group
->head
.users
);
817 * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread.
819 * Returns pointer to "struct tomoyo_domain_info" for current thread.
821 static inline struct tomoyo_domain_info
*tomoyo_domain(void)
823 return current_cred()->security
;
827 * tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread.
829 * @task: Pointer to "struct task_struct".
831 * Returns pointer to "struct tomoyo_security" for specified thread.
833 static inline struct tomoyo_domain_info
*tomoyo_real_domain(struct task_struct
836 return task_cred_xxx(task
, security
);
840 * tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry.
842 * @a: Pointer to "struct tomoyo_name_union".
843 * @b: Pointer to "struct tomoyo_name_union".
845 * Returns true if @a == @b, false otherwise.
847 static inline bool tomoyo_same_name_union
848 (const struct tomoyo_name_union
*a
, const struct tomoyo_name_union
*b
)
850 return a
->filename
== b
->filename
&& a
->group
== b
->group
;
854 * tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry.
856 * @a: Pointer to "struct tomoyo_number_union".
857 * @b: Pointer to "struct tomoyo_number_union".
859 * Returns true if @a == @b, false otherwise.
861 static inline bool tomoyo_same_number_union
862 (const struct tomoyo_number_union
*a
, const struct tomoyo_number_union
*b
)
864 return a
->values
[0] == b
->values
[0] && a
->values
[1] == b
->values
[1] &&
865 a
->group
== b
->group
&& a
->value_type
[0] == b
->value_type
[0] &&
866 a
->value_type
[1] == b
->value_type
[1];
870 * tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread.
872 * Returns pointer to "struct tomoyo_policy_namespace" for current thread.
874 static inline struct tomoyo_policy_namespace
*tomoyo_current_namespace(void)
876 return tomoyo_domain()->ns
;
879 #if defined(CONFIG_SLOB)
882 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
884 * @size: Size to be rounded up.
888 * Since SLOB does not round up, this function simply returns @size.
890 static inline int tomoyo_round2(size_t size
)
898 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
900 * @size: Size to be rounded up.
902 * Returns rounded size.
904 * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of
907 static inline int tomoyo_round2(size_t size
)
909 #if PAGE_SIZE == 4096
924 * list_for_each_cookie - iterate over a list with cookie.
925 * @pos: the &struct list_head to use as a loop cursor.
926 * @head: the head for your list.
928 #define list_for_each_cookie(pos, head) \
930 pos = srcu_dereference((head)->next, &tomoyo_ss); \
931 for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss))
933 #endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */