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 group entries. */
71 enum tomoyo_group_id
{
77 /* A domain definition starts with <kernel>. */
78 #define TOMOYO_ROOT_NAME "<kernel>"
79 #define TOMOYO_ROOT_NAME_LEN (sizeof(TOMOYO_ROOT_NAME) - 1)
81 /* Index numbers for type of numeric values. */
82 enum tomoyo_value_type
{
83 TOMOYO_VALUE_TYPE_INVALID
,
84 TOMOYO_VALUE_TYPE_DECIMAL
,
85 TOMOYO_VALUE_TYPE_OCTAL
,
86 TOMOYO_VALUE_TYPE_HEXADECIMAL
,
89 /* Index numbers for domain transition control keywords. */
90 enum tomoyo_transition_type
{
91 /* Do not change this order, */
92 TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE
,
93 TOMOYO_TRANSITION_CONTROL_INITIALIZE
,
94 TOMOYO_TRANSITION_CONTROL_NO_KEEP
,
95 TOMOYO_TRANSITION_CONTROL_KEEP
,
96 TOMOYO_MAX_TRANSITION_TYPE
99 /* Index numbers for Access Controls. */
100 enum tomoyo_acl_entry_type_index
{
101 TOMOYO_TYPE_PATH_ACL
,
102 TOMOYO_TYPE_PATH2_ACL
,
103 TOMOYO_TYPE_PATH_NUMBER_ACL
,
104 TOMOYO_TYPE_MKDEV_ACL
,
105 TOMOYO_TYPE_MOUNT_ACL
,
108 /* Index numbers for access controls with one pathname. */
109 enum tomoyo_path_acl_index
{
117 TOMOYO_TYPE_TRUNCATE
,
121 TOMOYO_MAX_PATH_OPERATION
124 enum tomoyo_memory_stat_type
{
125 TOMOYO_MEMORY_POLICY
,
128 TOMOYO_MAX_MEMORY_STAT
131 enum tomoyo_mkdev_acl_index
{
134 TOMOYO_MAX_MKDEV_OPERATION
137 /* Index numbers for access controls with two pathnames. */
138 enum tomoyo_path2_acl_index
{
141 TOMOYO_TYPE_PIVOT_ROOT
,
142 TOMOYO_MAX_PATH2_OPERATION
145 /* Index numbers for access controls with one pathname and one number. */
146 enum tomoyo_path_number_acl_index
{
155 TOMOYO_MAX_PATH_NUMBER_OPERATION
158 /* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */
159 enum tomoyo_securityfs_interface_index
{
161 TOMOYO_EXCEPTIONPOLICY
,
162 TOMOYO_DOMAIN_STATUS
,
163 TOMOYO_PROCESS_STATUS
,
173 /* Index numbers for special mount operations. */
174 enum tomoyo_special_mount
{
175 TOMOYO_MOUNT_BIND
, /* mount --bind /source /dest */
176 TOMOYO_MOUNT_MOVE
, /* mount --move /old /new */
177 TOMOYO_MOUNT_REMOUNT
, /* mount -o remount /dir */
178 TOMOYO_MOUNT_MAKE_UNBINDABLE
, /* mount --make-unbindable /dir */
179 TOMOYO_MOUNT_MAKE_PRIVATE
, /* mount --make-private /dir */
180 TOMOYO_MOUNT_MAKE_SLAVE
, /* mount --make-slave /dir */
181 TOMOYO_MOUNT_MAKE_SHARED
, /* mount --make-shared /dir */
182 TOMOYO_MAX_SPECIAL_MOUNT
185 /* Index numbers for functionality. */
186 enum tomoyo_mac_index
{
187 TOMOYO_MAC_FILE_EXECUTE
,
188 TOMOYO_MAC_FILE_OPEN
,
189 TOMOYO_MAC_FILE_CREATE
,
190 TOMOYO_MAC_FILE_UNLINK
,
191 TOMOYO_MAC_FILE_GETATTR
,
192 TOMOYO_MAC_FILE_MKDIR
,
193 TOMOYO_MAC_FILE_RMDIR
,
194 TOMOYO_MAC_FILE_MKFIFO
,
195 TOMOYO_MAC_FILE_MKSOCK
,
196 TOMOYO_MAC_FILE_TRUNCATE
,
197 TOMOYO_MAC_FILE_SYMLINK
,
198 TOMOYO_MAC_FILE_MKBLOCK
,
199 TOMOYO_MAC_FILE_MKCHAR
,
200 TOMOYO_MAC_FILE_LINK
,
201 TOMOYO_MAC_FILE_RENAME
,
202 TOMOYO_MAC_FILE_CHMOD
,
203 TOMOYO_MAC_FILE_CHOWN
,
204 TOMOYO_MAC_FILE_CHGRP
,
205 TOMOYO_MAC_FILE_IOCTL
,
206 TOMOYO_MAC_FILE_CHROOT
,
207 TOMOYO_MAC_FILE_MOUNT
,
208 TOMOYO_MAC_FILE_UMOUNT
,
209 TOMOYO_MAC_FILE_PIVOT_ROOT
,
213 /* Index numbers for category of functionality. */
214 enum tomoyo_mac_category_index
{
215 TOMOYO_MAC_CATEGORY_FILE
,
216 TOMOYO_MAX_MAC_CATEGORY_INDEX
220 * Retry this request. Returned by tomoyo_supervisor() if policy violation has
221 * occurred in enforcing mode and the userspace daemon decided to retry.
223 * We must choose a positive value in order to distinguish "granted" (which is
224 * 0) and "rejected" (which is a negative value) and "retry".
226 #define TOMOYO_RETRY_REQUEST 1
228 /* Index numbers for profile's PREFERENCE values. */
229 enum tomoyo_pref_index
{
230 TOMOYO_PREF_MAX_AUDIT_LOG
,
231 TOMOYO_PREF_MAX_LEARNING_ENTRY
,
235 /********** Structure definitions. **********/
237 /* Common header for holding ACL entries. */
238 struct tomoyo_acl_head
{
239 struct list_head list
;
243 /* Common header for shared entries. */
244 struct tomoyo_shared_acl_head
{
245 struct list_head list
;
249 /* Structure for request info. */
250 struct tomoyo_request_info
{
251 struct tomoyo_domain_info
*domain
;
252 /* For holding parameters. */
255 const struct tomoyo_path_info
*filename
;
256 /* For using wildcards at tomoyo_find_next_domain(). */
257 const struct tomoyo_path_info
*matched_path
;
258 /* One of values in "enum tomoyo_path_acl_index". */
262 const struct tomoyo_path_info
*filename1
;
263 const struct tomoyo_path_info
*filename2
;
264 /* One of values in "enum tomoyo_path2_acl_index". */
268 const struct tomoyo_path_info
*filename
;
272 /* One of values in "enum tomoyo_mkdev_acl_index". */
276 const struct tomoyo_path_info
*filename
;
277 unsigned long number
;
280 * "enum tomoyo_path_number_acl_index".
285 const struct tomoyo_path_info
*type
;
286 const struct tomoyo_path_info
*dir
;
287 const struct tomoyo_path_info
*dev
;
296 u8 mode
; /* One of tomoyo_mode_index . */
300 /* Structure for holding a token. */
301 struct tomoyo_path_info
{
303 u32 hash
; /* = full_name_hash(name, strlen(name)) */
304 u16 const_len
; /* = tomoyo_const_part_length(name) */
305 bool is_dir
; /* = tomoyo_strendswith(name, "/") */
306 bool is_patterned
; /* = tomoyo_path_contains_pattern(name) */
309 /* Structure for holding string data. */
311 struct tomoyo_shared_acl_head head
;
312 struct tomoyo_path_info entry
;
315 /* Structure for holding a word. */
316 struct tomoyo_name_union
{
317 /* Either @filename or @group is NULL. */
318 const struct tomoyo_path_info
*filename
;
319 struct tomoyo_group
*group
;
322 /* Structure for holding a number. */
323 struct tomoyo_number_union
{
324 unsigned long values
[2];
325 struct tomoyo_group
*group
; /* Maybe NULL. */
326 /* One of values in "enum tomoyo_value_type". */
330 /* Structure for "path_group"/"number_group" directive. */
331 struct tomoyo_group
{
332 struct tomoyo_shared_acl_head head
;
333 const struct tomoyo_path_info
*group_name
;
334 struct list_head member_list
;
337 /* Structure for "path_group" directive. */
338 struct tomoyo_path_group
{
339 struct tomoyo_acl_head head
;
340 const struct tomoyo_path_info
*member_name
;
343 /* Structure for "number_group" directive. */
344 struct tomoyo_number_group
{
345 struct tomoyo_acl_head head
;
346 struct tomoyo_number_union number
;
349 /* Common header for individual entries. */
350 struct tomoyo_acl_info
{
351 struct list_head list
;
353 u8 type
; /* One of values in "enum tomoyo_acl_entry_type_index". */
356 /* Structure for domain information. */
357 struct tomoyo_domain_info
{
358 struct list_head list
;
359 struct list_head acl_info_list
;
360 /* Name of this domain. Never NULL. */
361 const struct tomoyo_path_info
*domainname
;
362 u8 profile
; /* Profile number to use. */
363 u8 group
; /* Group number to use. */
364 bool is_deleted
; /* Delete flag. */
365 bool quota_warned
; /* Quota warnning flag. */
366 bool transition_failed
; /* Domain transition failed flag. */
367 atomic_t users
; /* Number of referring credentials. */
371 * Structure for "file execute", "file read", "file write", "file append",
372 * "file unlink", "file getattr", "file rmdir", "file truncate",
373 * "file symlink", "file chroot" and "file unmount" directive.
375 struct tomoyo_path_acl
{
376 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_PATH_ACL */
377 u16 perm
; /* Bitmask of values in "enum tomoyo_path_acl_index". */
378 struct tomoyo_name_union name
;
382 * Structure for "file create", "file mkdir", "file mkfifo", "file mksock",
383 * "file ioctl", "file chmod", "file chown" and "file chgrp" directive.
385 struct tomoyo_path_number_acl
{
386 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */
387 /* Bitmask of values in "enum tomoyo_path_number_acl_index". */
389 struct tomoyo_name_union name
;
390 struct tomoyo_number_union number
;
393 /* Structure for "file mkblock" and "file mkchar" directive. */
394 struct tomoyo_mkdev_acl
{
395 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_MKDEV_ACL */
396 u8 perm
; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */
397 struct tomoyo_name_union name
;
398 struct tomoyo_number_union mode
;
399 struct tomoyo_number_union major
;
400 struct tomoyo_number_union minor
;
404 * Structure for "file rename", "file link" and "file pivot_root" directive.
406 struct tomoyo_path2_acl
{
407 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_PATH2_ACL */
408 u8 perm
; /* Bitmask of values in "enum tomoyo_path2_acl_index". */
409 struct tomoyo_name_union name1
;
410 struct tomoyo_name_union name2
;
413 /* Structure for "file mount" directive. */
414 struct tomoyo_mount_acl
{
415 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_MOUNT_ACL */
416 struct tomoyo_name_union dev_name
;
417 struct tomoyo_name_union dir_name
;
418 struct tomoyo_name_union fs_type
;
419 struct tomoyo_number_union flags
;
422 /* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */
423 struct tomoyo_acl_param
{
425 struct list_head
*list
;
429 #define TOMOYO_MAX_IO_READ_QUEUE 64
432 * Structure for reading/writing policy via /sys/kernel/security/tomoyo
435 struct tomoyo_io_buffer
{
436 void (*read
) (struct tomoyo_io_buffer
*);
437 int (*write
) (struct tomoyo_io_buffer
*);
438 int (*poll
) (struct file
*file
, poll_table
*wait
);
439 /* Exclusive lock for this structure. */
441 /* Index returned by tomoyo_read_lock(). */
443 char __user
*read_user_buf
;
444 int read_user_buf_avail
;
446 struct list_head
*domain
;
447 struct list_head
*group
;
448 struct list_head
*acl
;
457 bool print_this_domain_only
;
458 bool print_execute_only
;
459 const char *w
[TOMOYO_MAX_IO_READ_QUEUE
];
462 /* The position currently writing to. */
463 struct tomoyo_domain_info
*domain
;
464 /* Bytes available for writing. */
467 /* Buffer for reading. */
469 /* Size of read buffer. */
471 /* Buffer for writing. */
473 /* Size of write buffer. */
475 /* Type of this interface. */
480 * Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/
481 * "no_keep_domain" keyword.
483 struct tomoyo_transition_control
{
484 struct tomoyo_acl_head head
;
485 u8 type
; /* One of values in "enum tomoyo_transition_type". */
486 /* True if the domainname is tomoyo_get_last_name(). */
488 const struct tomoyo_path_info
*domainname
; /* Maybe NULL */
489 const struct tomoyo_path_info
*program
; /* Maybe NULL */
492 /* Structure for "aggregator" keyword. */
493 struct tomoyo_aggregator
{
494 struct tomoyo_acl_head head
;
495 const struct tomoyo_path_info
*original_name
;
496 const struct tomoyo_path_info
*aggregated_name
;
499 /* Structure for policy manager. */
500 struct tomoyo_manager
{
501 struct tomoyo_acl_head head
;
502 bool is_domain
; /* True if manager is a domainname. */
503 /* A path to program or a domainname. */
504 const struct tomoyo_path_info
*manager
;
507 struct tomoyo_preference
{
508 unsigned int learning_max_entry
;
509 bool enforcing_verbose
;
510 bool learning_verbose
;
511 bool permissive_verbose
;
514 /* Structure for /sys/kernel/security/tomnoyo/profile interface. */
515 struct tomoyo_profile
{
516 const struct tomoyo_path_info
*comment
;
517 struct tomoyo_preference
*learning
;
518 struct tomoyo_preference
*permissive
;
519 struct tomoyo_preference
*enforcing
;
520 struct tomoyo_preference preference
;
522 u8 config
[TOMOYO_MAX_MAC_INDEX
+ TOMOYO_MAX_MAC_CATEGORY_INDEX
];
523 unsigned int pref
[TOMOYO_MAX_PREF
];
526 /* Structure for representing YYYY/MM/DD hh/mm/ss. */
536 /********** Function prototypes. **********/
538 bool tomoyo_str_starts(char **src
, const char *find
);
539 const char *tomoyo_get_exe(void);
540 void tomoyo_normalize_line(unsigned char *buffer
);
541 void tomoyo_check_profile(void);
542 int tomoyo_open_control(const u8 type
, struct file
*file
);
543 int tomoyo_close_control(struct tomoyo_io_buffer
*head
);
544 int tomoyo_poll_control(struct file
*file
, poll_table
*wait
);
545 int tomoyo_read_control(struct tomoyo_io_buffer
*head
, char __user
*buffer
,
546 const int buffer_len
);
547 int tomoyo_write_control(struct tomoyo_io_buffer
*head
,
548 const char __user
*buffer
, const int buffer_len
);
549 bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info
*r
);
550 void tomoyo_warn_oom(const char *function
);
551 const struct tomoyo_path_info
*
552 tomoyo_compare_name_union(const struct tomoyo_path_info
*name
,
553 const struct tomoyo_name_union
*ptr
);
554 bool tomoyo_compare_number_union(const unsigned long value
,
555 const struct tomoyo_number_union
*ptr
);
556 int tomoyo_get_mode(const u8 profile
, const u8 index
);
557 void tomoyo_io_printf(struct tomoyo_io_buffer
*head
, const char *fmt
, ...)
558 __attribute__ ((format(printf
, 2, 3)));
559 bool tomoyo_correct_domain(const unsigned char *domainname
);
560 bool tomoyo_correct_path(const char *filename
);
561 bool tomoyo_correct_word(const char *string
);
562 bool tomoyo_domain_def(const unsigned char *buffer
);
563 bool tomoyo_parse_name_union(struct tomoyo_acl_param
*param
,
564 struct tomoyo_name_union
*ptr
);
565 const struct tomoyo_path_info
*
566 tomoyo_path_matches_group(const struct tomoyo_path_info
*pathname
,
567 const struct tomoyo_group
*group
);
568 bool tomoyo_number_matches_group(const unsigned long min
,
569 const unsigned long max
,
570 const struct tomoyo_group
*group
);
571 bool tomoyo_path_matches_pattern(const struct tomoyo_path_info
*filename
,
572 const struct tomoyo_path_info
*pattern
);
573 bool tomoyo_parse_number_union(struct tomoyo_acl_param
*param
,
574 struct tomoyo_number_union
*ptr
);
575 bool tomoyo_tokenize(char *buffer
, char *w
[], size_t size
);
576 bool tomoyo_verbose_mode(const struct tomoyo_domain_info
*domain
);
577 int tomoyo_init_request_info(struct tomoyo_request_info
*r
,
578 struct tomoyo_domain_info
*domain
,
580 int tomoyo_mount_permission(char *dev_name
, struct path
*path
,
581 const char *type
, unsigned long flags
,
583 int tomoyo_write_aggregator(struct tomoyo_acl_param
*param
);
584 int tomoyo_write_transition_control(struct tomoyo_acl_param
*param
,
586 int tomoyo_write_file(struct tomoyo_acl_param
*param
);
587 int tomoyo_write_group(struct tomoyo_acl_param
*param
, const u8 type
);
588 int tomoyo_supervisor(struct tomoyo_request_info
*r
, const char *fmt
, ...)
589 __attribute__ ((format(printf
, 2, 3)));
590 struct tomoyo_domain_info
*tomoyo_find_domain(const char *domainname
);
591 struct tomoyo_domain_info
*tomoyo_assign_domain(const char *domainname
,
593 struct tomoyo_profile
*tomoyo_profile(const u8 profile
);
594 struct tomoyo_group
*tomoyo_get_group(struct tomoyo_acl_param
*param
,
596 unsigned int tomoyo_check_flags(const struct tomoyo_domain_info
*domain
,
598 void tomoyo_fill_path_info(struct tomoyo_path_info
*ptr
);
599 void tomoyo_load_policy(const char *filename
);
600 void tomoyo_put_number_union(struct tomoyo_number_union
*ptr
);
601 char *tomoyo_encode(const char *str
);
602 char *tomoyo_realpath_nofollow(const char *pathname
);
603 char *tomoyo_realpath_from_path(struct path
*path
);
604 bool tomoyo_memory_ok(void *ptr
);
605 void *tomoyo_commit_ok(void *data
, const unsigned int size
);
606 const struct tomoyo_path_info
*tomoyo_get_name(const char *name
);
607 void tomoyo_read_memory_counter(struct tomoyo_io_buffer
*head
);
608 int tomoyo_write_memory_quota(struct tomoyo_io_buffer
*head
);
609 void __init
tomoyo_mm_init(void);
610 int tomoyo_path_permission(struct tomoyo_request_info
*r
, u8 operation
,
611 const struct tomoyo_path_info
*filename
);
612 int tomoyo_check_open_permission(struct tomoyo_domain_info
*domain
,
613 struct path
*path
, const int flag
);
614 int tomoyo_path_number_perm(const u8 operation
, struct path
*path
,
615 unsigned long number
);
616 int tomoyo_mkdev_perm(const u8 operation
, struct path
*path
,
617 const unsigned int mode
, unsigned int dev
);
618 int tomoyo_path_perm(const u8 operation
, struct path
*path
);
619 int tomoyo_path2_perm(const u8 operation
, struct path
*path1
,
621 int tomoyo_find_next_domain(struct linux_binprm
*bprm
);
622 void tomoyo_print_ulong(char *buffer
, const int buffer_len
,
623 const unsigned long value
, const u8 type
);
624 void tomoyo_put_name_union(struct tomoyo_name_union
*ptr
);
625 void tomoyo_run_gc(void);
626 void tomoyo_memory_free(void *ptr
);
627 int tomoyo_update_domain(struct tomoyo_acl_info
*new_entry
, const int size
,
628 struct tomoyo_acl_param
*param
,
629 bool (*check_duplicate
) (const struct tomoyo_acl_info
631 const struct tomoyo_acl_info
633 bool (*merge_duplicate
) (struct tomoyo_acl_info
*,
634 struct tomoyo_acl_info
*,
636 int tomoyo_update_policy(struct tomoyo_acl_head
*new_entry
, const int size
,
637 struct tomoyo_acl_param
*param
,
638 bool (*check_duplicate
) (const struct tomoyo_acl_head
640 const struct tomoyo_acl_head
642 void tomoyo_check_acl(struct tomoyo_request_info
*r
,
643 bool (*check_entry
) (struct tomoyo_request_info
*,
644 const struct tomoyo_acl_info
*));
645 char *tomoyo_read_token(struct tomoyo_acl_param
*param
);
646 bool tomoyo_permstr(const char *string
, const char *keyword
);
648 const char *tomoyo_yesno(const unsigned int value
);
649 void tomoyo_write_log2(struct tomoyo_request_info
*r
, int len
, const char *fmt
,
651 void tomoyo_read_log(struct tomoyo_io_buffer
*head
);
652 int tomoyo_poll_log(struct file
*file
, poll_table
*wait
);
653 char *tomoyo_init_log(struct tomoyo_request_info
*r
, int len
, const char *fmt
,
656 /********** External variable definitions. **********/
659 extern struct srcu_struct tomoyo_ss
;
661 /* The list for "struct tomoyo_domain_info". */
662 extern struct list_head tomoyo_domain_list
;
664 extern struct list_head tomoyo_policy_list
[TOMOYO_MAX_POLICY
];
665 extern struct list_head tomoyo_group_list
[TOMOYO_MAX_GROUP
];
666 extern struct list_head tomoyo_name_list
[TOMOYO_MAX_HASH
];
668 /* Lock for protecting policy. */
669 extern struct mutex tomoyo_policy_lock
;
671 /* Has /sbin/init started? */
672 extern bool tomoyo_policy_loaded
;
674 extern struct list_head tomoyo_acl_group
[TOMOYO_MAX_ACL_GROUPS
];
676 /* The kernel's domain. */
677 extern struct tomoyo_domain_info tomoyo_kernel_domain
;
679 extern const char *tomoyo_path_keyword
[TOMOYO_MAX_PATH_OPERATION
];
680 extern const char *tomoyo_mkdev_keyword
[TOMOYO_MAX_MKDEV_OPERATION
];
681 extern const char *tomoyo_path2_keyword
[TOMOYO_MAX_PATH2_OPERATION
];
682 extern const char *tomoyo_path_number_keyword
[TOMOYO_MAX_PATH_NUMBER_OPERATION
];
684 extern const u8 tomoyo_pnnn2mac
[TOMOYO_MAX_MKDEV_OPERATION
];
685 extern const u8 tomoyo_pp2mac
[TOMOYO_MAX_PATH2_OPERATION
];
686 extern const u8 tomoyo_pn2mac
[TOMOYO_MAX_PATH_NUMBER_OPERATION
];
688 extern const char * const tomoyo_mode
[TOMOYO_CONFIG_MAX_MODE
];
689 extern unsigned int tomoyo_memory_quota
[TOMOYO_MAX_MEMORY_STAT
];
690 extern unsigned int tomoyo_memory_used
[TOMOYO_MAX_MEMORY_STAT
];
692 /********** Inlined functions. **********/
695 * tomoyo_read_lock - Take lock for protecting policy.
697 * Returns index number for tomoyo_read_unlock().
699 static inline int tomoyo_read_lock(void)
701 return srcu_read_lock(&tomoyo_ss
);
705 * tomoyo_read_unlock - Release lock for protecting policy.
707 * @idx: Index number returned by tomoyo_read_lock().
711 static inline void tomoyo_read_unlock(int idx
)
713 srcu_read_unlock(&tomoyo_ss
, idx
);
717 * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure.
719 * @a: Pointer to "struct tomoyo_path_info".
720 * @b: Pointer to "struct tomoyo_path_info".
722 * Returns true if @a == @b, false otherwise.
724 static inline bool tomoyo_pathcmp(const struct tomoyo_path_info
*a
,
725 const struct tomoyo_path_info
*b
)
727 return a
->hash
!= b
->hash
|| strcmp(a
->name
, b
->name
);
731 * tomoyo_put_name - Drop reference on "struct tomoyo_name".
733 * @name: Pointer to "struct tomoyo_path_info". Maybe NULL.
737 static inline void tomoyo_put_name(const struct tomoyo_path_info
*name
)
740 struct tomoyo_name
*ptr
=
741 container_of(name
, typeof(*ptr
), entry
);
742 atomic_dec(&ptr
->head
.users
);
747 * tomoyo_put_group - Drop reference on "struct tomoyo_group".
749 * @group: Pointer to "struct tomoyo_group". Maybe NULL.
753 static inline void tomoyo_put_group(struct tomoyo_group
*group
)
756 atomic_dec(&group
->head
.users
);
760 * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread.
762 * Returns pointer to "struct tomoyo_domain_info" for current thread.
764 static inline struct tomoyo_domain_info
*tomoyo_domain(void)
766 return current_cred()->security
;
770 * tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread.
772 * @task: Pointer to "struct task_struct".
774 * Returns pointer to "struct tomoyo_security" for specified thread.
776 static inline struct tomoyo_domain_info
*tomoyo_real_domain(struct task_struct
779 return task_cred_xxx(task
, security
);
783 * tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry.
785 * @a: Pointer to "struct tomoyo_name_union".
786 * @b: Pointer to "struct tomoyo_name_union".
788 * Returns true if @a == @b, false otherwise.
790 static inline bool tomoyo_same_name_union
791 (const struct tomoyo_name_union
*a
, const struct tomoyo_name_union
*b
)
793 return a
->filename
== b
->filename
&& a
->group
== b
->group
;
797 * tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry.
799 * @a: Pointer to "struct tomoyo_number_union".
800 * @b: Pointer to "struct tomoyo_number_union".
802 * Returns true if @a == @b, false otherwise.
804 static inline bool tomoyo_same_number_union
805 (const struct tomoyo_number_union
*a
, const struct tomoyo_number_union
*b
)
807 return a
->values
[0] == b
->values
[0] && a
->values
[1] == b
->values
[1] &&
808 a
->group
== b
->group
&& a
->value_type
[0] == b
->value_type
[0] &&
809 a
->value_type
[1] == b
->value_type
[1];
812 #if defined(CONFIG_SLOB)
815 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
817 * @size: Size to be rounded up.
821 * Since SLOB does not round up, this function simply returns @size.
823 static inline int tomoyo_round2(size_t size
)
831 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
833 * @size: Size to be rounded up.
835 * Returns rounded size.
837 * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of
840 static inline int tomoyo_round2(size_t size
)
842 #if PAGE_SIZE == 4096
857 * list_for_each_cookie - iterate over a list with cookie.
858 * @pos: the &struct list_head to use as a loop cursor.
859 * @head: the head for your list.
861 #define list_for_each_cookie(pos, head) \
863 pos = srcu_dereference((head)->next, &tomoyo_ss); \
864 for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss))
866 #endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */