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>
26 #include <linux/net.h>
27 #include <linux/inet.h>
29 #include <linux/in6.h>
32 #include <net/af_unix.h>
37 /********** Constants definitions. **********/
40 * TOMOYO uses this hash only when appending a string into the string
41 * table. Frequency of appending strings is very low. So we don't need
42 * large (e.g. 64k) hash size. 256 will be sufficient.
44 #define TOMOYO_HASH_BITS 8
45 #define TOMOYO_MAX_HASH (1u<<TOMOYO_HASH_BITS)
48 * TOMOYO checks only SOCK_STREAM, SOCK_DGRAM, SOCK_RAW, SOCK_SEQPACKET.
49 * Therefore, we don't need SOCK_MAX.
51 #define TOMOYO_SOCK_MAX 6
53 #define TOMOYO_EXEC_TMPSIZE 4096
55 /* Profile number is an integer between 0 and 255. */
56 #define TOMOYO_MAX_PROFILES 256
58 /* Group number is an integer between 0 and 255. */
59 #define TOMOYO_MAX_ACL_GROUPS 256
61 /* Index numbers for "struct tomoyo_condition". */
62 enum tomoyo_conditions_index
{
63 TOMOYO_TASK_UID
, /* current_uid() */
64 TOMOYO_TASK_EUID
, /* current_euid() */
65 TOMOYO_TASK_SUID
, /* current_suid() */
66 TOMOYO_TASK_FSUID
, /* current_fsuid() */
67 TOMOYO_TASK_GID
, /* current_gid() */
68 TOMOYO_TASK_EGID
, /* current_egid() */
69 TOMOYO_TASK_SGID
, /* current_sgid() */
70 TOMOYO_TASK_FSGID
, /* current_fsgid() */
71 TOMOYO_TASK_PID
, /* sys_getpid() */
72 TOMOYO_TASK_PPID
, /* sys_getppid() */
73 TOMOYO_EXEC_ARGC
, /* "struct linux_binprm *"->argc */
74 TOMOYO_EXEC_ENVC
, /* "struct linux_binprm *"->envc */
75 TOMOYO_TYPE_IS_SOCKET
, /* S_IFSOCK */
76 TOMOYO_TYPE_IS_SYMLINK
, /* S_IFLNK */
77 TOMOYO_TYPE_IS_FILE
, /* S_IFREG */
78 TOMOYO_TYPE_IS_BLOCK_DEV
, /* S_IFBLK */
79 TOMOYO_TYPE_IS_DIRECTORY
, /* S_IFDIR */
80 TOMOYO_TYPE_IS_CHAR_DEV
, /* S_IFCHR */
81 TOMOYO_TYPE_IS_FIFO
, /* S_IFIFO */
82 TOMOYO_MODE_SETUID
, /* S_ISUID */
83 TOMOYO_MODE_SETGID
, /* S_ISGID */
84 TOMOYO_MODE_STICKY
, /* S_ISVTX */
85 TOMOYO_MODE_OWNER_READ
, /* S_IRUSR */
86 TOMOYO_MODE_OWNER_WRITE
, /* S_IWUSR */
87 TOMOYO_MODE_OWNER_EXECUTE
, /* S_IXUSR */
88 TOMOYO_MODE_GROUP_READ
, /* S_IRGRP */
89 TOMOYO_MODE_GROUP_WRITE
, /* S_IWGRP */
90 TOMOYO_MODE_GROUP_EXECUTE
, /* S_IXGRP */
91 TOMOYO_MODE_OTHERS_READ
, /* S_IROTH */
92 TOMOYO_MODE_OTHERS_WRITE
, /* S_IWOTH */
93 TOMOYO_MODE_OTHERS_EXECUTE
, /* S_IXOTH */
95 TOMOYO_SYMLINK_TARGET
,
103 TOMOYO_PATH1_DEV_MAJOR
,
104 TOMOYO_PATH1_DEV_MINOR
,
112 TOMOYO_PATH2_DEV_MAJOR
,
113 TOMOYO_PATH2_DEV_MINOR
,
114 TOMOYO_PATH1_PARENT_UID
,
115 TOMOYO_PATH1_PARENT_GID
,
116 TOMOYO_PATH1_PARENT_INO
,
117 TOMOYO_PATH1_PARENT_PERM
,
118 TOMOYO_PATH2_PARENT_UID
,
119 TOMOYO_PATH2_PARENT_GID
,
120 TOMOYO_PATH2_PARENT_INO
,
121 TOMOYO_PATH2_PARENT_PERM
,
122 TOMOYO_MAX_CONDITION_KEYWORD
,
130 /* Index numbers for stat(). */
131 enum tomoyo_path_stat_index
{
132 /* Do not change this order. */
140 /* Index numbers for operation mode. */
141 enum tomoyo_mode_index
{
142 TOMOYO_CONFIG_DISABLED
,
143 TOMOYO_CONFIG_LEARNING
,
144 TOMOYO_CONFIG_PERMISSIVE
,
145 TOMOYO_CONFIG_ENFORCING
,
146 TOMOYO_CONFIG_MAX_MODE
,
147 TOMOYO_CONFIG_WANT_REJECT_LOG
= 64,
148 TOMOYO_CONFIG_WANT_GRANT_LOG
= 128,
149 TOMOYO_CONFIG_USE_DEFAULT
= 255,
152 /* Index numbers for entry type. */
153 enum tomoyo_policy_id
{
155 TOMOYO_ID_ADDRESS_GROUP
,
156 TOMOYO_ID_PATH_GROUP
,
157 TOMOYO_ID_NUMBER_GROUP
,
158 TOMOYO_ID_TRANSITION_CONTROL
,
159 TOMOYO_ID_AGGREGATOR
,
168 /* Index numbers for domain's attributes. */
169 enum tomoyo_domain_info_flags_index
{
170 /* Quota warnning flag. */
171 TOMOYO_DIF_QUOTA_WARNED
,
173 * This domain was unable to create a new domain at
174 * tomoyo_find_next_domain() because the name of the domain to be
175 * created was too long or it could not allocate memory.
176 * More than one process continued execve() without domain transition.
178 TOMOYO_DIF_TRANSITION_FAILED
,
179 TOMOYO_MAX_DOMAIN_INFO_FLAGS
182 /* Index numbers for audit type. */
183 enum tomoyo_grant_log
{
184 /* Follow profile's configuration. */
185 TOMOYO_GRANTLOG_AUTO
,
186 /* Do not generate grant log. */
188 /* Generate grant_log. */
192 /* Index numbers for group entries. */
193 enum tomoyo_group_id
{
196 TOMOYO_ADDRESS_GROUP
,
200 /* Index numbers for type of numeric values. */
201 enum tomoyo_value_type
{
202 TOMOYO_VALUE_TYPE_INVALID
,
203 TOMOYO_VALUE_TYPE_DECIMAL
,
204 TOMOYO_VALUE_TYPE_OCTAL
,
205 TOMOYO_VALUE_TYPE_HEXADECIMAL
,
208 /* Index numbers for domain transition control keywords. */
209 enum tomoyo_transition_type
{
210 /* Do not change this order, */
211 TOMOYO_TRANSITION_CONTROL_NO_RESET
,
212 TOMOYO_TRANSITION_CONTROL_RESET
,
213 TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE
,
214 TOMOYO_TRANSITION_CONTROL_INITIALIZE
,
215 TOMOYO_TRANSITION_CONTROL_NO_KEEP
,
216 TOMOYO_TRANSITION_CONTROL_KEEP
,
217 TOMOYO_MAX_TRANSITION_TYPE
220 /* Index numbers for Access Controls. */
221 enum tomoyo_acl_entry_type_index
{
222 TOMOYO_TYPE_PATH_ACL
,
223 TOMOYO_TYPE_PATH2_ACL
,
224 TOMOYO_TYPE_PATH_NUMBER_ACL
,
225 TOMOYO_TYPE_MKDEV_ACL
,
226 TOMOYO_TYPE_MOUNT_ACL
,
227 TOMOYO_TYPE_INET_ACL
,
228 TOMOYO_TYPE_UNIX_ACL
,
232 /* Index numbers for access controls with one pathname. */
233 enum tomoyo_path_acl_index
{
241 TOMOYO_TYPE_TRUNCATE
,
245 TOMOYO_MAX_PATH_OPERATION
248 /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
249 enum tomoyo_memory_stat_type
{
250 TOMOYO_MEMORY_POLICY
,
253 TOMOYO_MAX_MEMORY_STAT
256 enum tomoyo_mkdev_acl_index
{
259 TOMOYO_MAX_MKDEV_OPERATION
262 /* Index numbers for socket operations. */
263 enum tomoyo_network_acl_index
{
264 TOMOYO_NETWORK_BIND
, /* bind() operation. */
265 TOMOYO_NETWORK_LISTEN
, /* listen() operation. */
266 TOMOYO_NETWORK_CONNECT
, /* connect() operation. */
267 TOMOYO_NETWORK_SEND
, /* send() operation. */
268 TOMOYO_MAX_NETWORK_OPERATION
271 /* Index numbers for access controls with two pathnames. */
272 enum tomoyo_path2_acl_index
{
275 TOMOYO_TYPE_PIVOT_ROOT
,
276 TOMOYO_MAX_PATH2_OPERATION
279 /* Index numbers for access controls with one pathname and one number. */
280 enum tomoyo_path_number_acl_index
{
289 TOMOYO_MAX_PATH_NUMBER_OPERATION
292 /* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */
293 enum tomoyo_securityfs_interface_index
{
295 TOMOYO_EXCEPTIONPOLICY
,
296 TOMOYO_PROCESS_STATUS
,
306 /* Index numbers for special mount operations. */
307 enum tomoyo_special_mount
{
308 TOMOYO_MOUNT_BIND
, /* mount --bind /source /dest */
309 TOMOYO_MOUNT_MOVE
, /* mount --move /old /new */
310 TOMOYO_MOUNT_REMOUNT
, /* mount -o remount /dir */
311 TOMOYO_MOUNT_MAKE_UNBINDABLE
, /* mount --make-unbindable /dir */
312 TOMOYO_MOUNT_MAKE_PRIVATE
, /* mount --make-private /dir */
313 TOMOYO_MOUNT_MAKE_SLAVE
, /* mount --make-slave /dir */
314 TOMOYO_MOUNT_MAKE_SHARED
, /* mount --make-shared /dir */
315 TOMOYO_MAX_SPECIAL_MOUNT
318 /* Index numbers for functionality. */
319 enum tomoyo_mac_index
{
320 TOMOYO_MAC_FILE_EXECUTE
,
321 TOMOYO_MAC_FILE_OPEN
,
322 TOMOYO_MAC_FILE_CREATE
,
323 TOMOYO_MAC_FILE_UNLINK
,
324 TOMOYO_MAC_FILE_GETATTR
,
325 TOMOYO_MAC_FILE_MKDIR
,
326 TOMOYO_MAC_FILE_RMDIR
,
327 TOMOYO_MAC_FILE_MKFIFO
,
328 TOMOYO_MAC_FILE_MKSOCK
,
329 TOMOYO_MAC_FILE_TRUNCATE
,
330 TOMOYO_MAC_FILE_SYMLINK
,
331 TOMOYO_MAC_FILE_MKBLOCK
,
332 TOMOYO_MAC_FILE_MKCHAR
,
333 TOMOYO_MAC_FILE_LINK
,
334 TOMOYO_MAC_FILE_RENAME
,
335 TOMOYO_MAC_FILE_CHMOD
,
336 TOMOYO_MAC_FILE_CHOWN
,
337 TOMOYO_MAC_FILE_CHGRP
,
338 TOMOYO_MAC_FILE_IOCTL
,
339 TOMOYO_MAC_FILE_CHROOT
,
340 TOMOYO_MAC_FILE_MOUNT
,
341 TOMOYO_MAC_FILE_UMOUNT
,
342 TOMOYO_MAC_FILE_PIVOT_ROOT
,
343 TOMOYO_MAC_NETWORK_INET_STREAM_BIND
,
344 TOMOYO_MAC_NETWORK_INET_STREAM_LISTEN
,
345 TOMOYO_MAC_NETWORK_INET_STREAM_CONNECT
,
346 TOMOYO_MAC_NETWORK_INET_DGRAM_BIND
,
347 TOMOYO_MAC_NETWORK_INET_DGRAM_SEND
,
348 TOMOYO_MAC_NETWORK_INET_RAW_BIND
,
349 TOMOYO_MAC_NETWORK_INET_RAW_SEND
,
350 TOMOYO_MAC_NETWORK_UNIX_STREAM_BIND
,
351 TOMOYO_MAC_NETWORK_UNIX_STREAM_LISTEN
,
352 TOMOYO_MAC_NETWORK_UNIX_STREAM_CONNECT
,
353 TOMOYO_MAC_NETWORK_UNIX_DGRAM_BIND
,
354 TOMOYO_MAC_NETWORK_UNIX_DGRAM_SEND
,
355 TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_BIND
,
356 TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_LISTEN
,
357 TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_CONNECT
,
362 /* Index numbers for category of functionality. */
363 enum tomoyo_mac_category_index
{
364 TOMOYO_MAC_CATEGORY_FILE
,
365 TOMOYO_MAC_CATEGORY_NETWORK
,
366 TOMOYO_MAC_CATEGORY_MISC
,
367 TOMOYO_MAX_MAC_CATEGORY_INDEX
371 * Retry this request. Returned by tomoyo_supervisor() if policy violation has
372 * occurred in enforcing mode and the userspace daemon decided to retry.
374 * We must choose a positive value in order to distinguish "granted" (which is
375 * 0) and "rejected" (which is a negative value) and "retry".
377 #define TOMOYO_RETRY_REQUEST 1
379 /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
380 enum tomoyo_policy_stat_type
{
381 /* Do not change this order. */
382 TOMOYO_STAT_POLICY_UPDATES
,
383 TOMOYO_STAT_POLICY_LEARNING
, /* == TOMOYO_CONFIG_LEARNING */
384 TOMOYO_STAT_POLICY_PERMISSIVE
, /* == TOMOYO_CONFIG_PERMISSIVE */
385 TOMOYO_STAT_POLICY_ENFORCING
, /* == TOMOYO_CONFIG_ENFORCING */
386 TOMOYO_MAX_POLICY_STAT
389 /* Index numbers for profile's PREFERENCE values. */
390 enum tomoyo_pref_index
{
391 TOMOYO_PREF_MAX_AUDIT_LOG
,
392 TOMOYO_PREF_MAX_LEARNING_ENTRY
,
396 /********** Structure definitions. **********/
398 /* Common header for holding ACL entries. */
399 struct tomoyo_acl_head
{
400 struct list_head list
;
404 /* Common header for shared entries. */
405 struct tomoyo_shared_acl_head
{
406 struct list_head list
;
410 struct tomoyo_policy_namespace
;
412 /* Structure for request info. */
413 struct tomoyo_request_info
{
415 * For holding parameters specific to operations which deal files.
416 * NULL if not dealing files.
418 struct tomoyo_obj_info
*obj
;
420 * For holding parameters specific to execve() request.
421 * NULL if not dealing do_execve().
423 struct tomoyo_execve
*ee
;
424 struct tomoyo_domain_info
*domain
;
425 /* For holding parameters. */
428 const struct tomoyo_path_info
*filename
;
429 /* For using wildcards at tomoyo_find_next_domain(). */
430 const struct tomoyo_path_info
*matched_path
;
431 /* One of values in "enum tomoyo_path_acl_index". */
435 const struct tomoyo_path_info
*filename1
;
436 const struct tomoyo_path_info
*filename2
;
437 /* One of values in "enum tomoyo_path2_acl_index". */
441 const struct tomoyo_path_info
*filename
;
445 /* One of values in "enum tomoyo_mkdev_acl_index". */
449 const struct tomoyo_path_info
*filename
;
450 unsigned long number
;
453 * "enum tomoyo_path_number_acl_index".
458 const struct tomoyo_path_info
*name
;
461 const __be32
*address
;
463 /* One of values smaller than TOMOYO_SOCK_MAX. */
465 /* One of values in "enum tomoyo_network_acl_index". */
470 const struct tomoyo_path_info
*address
;
471 /* One of values smaller than TOMOYO_SOCK_MAX. */
473 /* One of values in "enum tomoyo_network_acl_index". */
477 const struct tomoyo_path_info
*type
;
478 const struct tomoyo_path_info
*dir
;
479 const struct tomoyo_path_info
*dev
;
484 struct tomoyo_acl_info
*matched_acl
;
489 u8 mode
; /* One of tomoyo_mode_index . */
493 /* Structure for holding a token. */
494 struct tomoyo_path_info
{
496 u32 hash
; /* = full_name_hash(name, strlen(name)) */
497 u16 const_len
; /* = tomoyo_const_part_length(name) */
498 bool is_dir
; /* = tomoyo_strendswith(name, "/") */
499 bool is_patterned
; /* = tomoyo_path_contains_pattern(name) */
502 /* Structure for holding string data. */
504 struct tomoyo_shared_acl_head head
;
505 struct tomoyo_path_info entry
;
508 /* Structure for holding a word. */
509 struct tomoyo_name_union
{
510 /* Either @filename or @group is NULL. */
511 const struct tomoyo_path_info
*filename
;
512 struct tomoyo_group
*group
;
515 /* Structure for holding a number. */
516 struct tomoyo_number_union
{
517 unsigned long values
[2];
518 struct tomoyo_group
*group
; /* Maybe NULL. */
519 /* One of values in "enum tomoyo_value_type". */
523 /* Structure for holding an IP address. */
524 struct tomoyo_ipaddr_union
{
525 struct in6_addr ip
[2]; /* Big endian. */
526 struct tomoyo_group
*group
; /* Pointer to address group. */
527 bool is_ipv6
; /* Valid only if @group == NULL. */
530 /* Structure for "path_group"/"number_group"/"address_group" directive. */
531 struct tomoyo_group
{
532 struct tomoyo_shared_acl_head head
;
533 const struct tomoyo_path_info
*group_name
;
534 struct list_head member_list
;
537 /* Structure for "path_group" directive. */
538 struct tomoyo_path_group
{
539 struct tomoyo_acl_head head
;
540 const struct tomoyo_path_info
*member_name
;
543 /* Structure for "number_group" directive. */
544 struct tomoyo_number_group
{
545 struct tomoyo_acl_head head
;
546 struct tomoyo_number_union number
;
549 /* Structure for "address_group" directive. */
550 struct tomoyo_address_group
{
551 struct tomoyo_acl_head head
;
552 /* Structure for holding an IP address. */
553 struct tomoyo_ipaddr_union address
;
556 /* Subset of "struct stat". Used by conditional ACL and audit logs. */
557 struct tomoyo_mini_stat
{
566 /* Structure for dumping argv[] and envp[] of "struct linux_binprm". */
567 struct tomoyo_page_dump
{
568 struct page
*page
; /* Previously dumped page. */
569 char *data
; /* Contents of "page". Size is PAGE_SIZE. */
572 /* Structure for attribute checks in addition to pathname checks. */
573 struct tomoyo_obj_info
{
575 * True if tomoyo_get_attributes() was already called, false otherwise.
578 /* True if @stat[] is valid. */
579 bool stat_valid
[TOMOYO_MAX_PATH_STAT
];
580 /* First pathname. Initialized with { NULL, NULL } if no path. */
582 /* Second pathname. Initialized with { NULL, NULL } if no path. */
585 * Information on @path1, @path1's parent directory, @path2, @path2's
588 struct tomoyo_mini_stat stat
[TOMOYO_MAX_PATH_STAT
];
590 * Content of symbolic link to be created. NULL for operations other
593 struct tomoyo_path_info
*symlink_target
;
596 /* Structure for argv[]. */
599 const struct tomoyo_path_info
*value
;
603 /* Structure for envp[]. */
605 const struct tomoyo_path_info
*name
;
606 const struct tomoyo_path_info
*value
;
610 /* Structure for execve() operation. */
611 struct tomoyo_execve
{
612 struct tomoyo_request_info r
;
613 struct tomoyo_obj_info obj
;
614 struct linux_binprm
*bprm
;
615 /* For dumping argv[] and envp[]. */
616 struct tomoyo_page_dump dump
;
617 /* For temporary use. */
618 char *tmp
; /* Size is TOMOYO_EXEC_TMPSIZE bytes */
621 /* Structure for entries which follows "struct tomoyo_condition". */
622 struct tomoyo_condition_element
{
624 * Left hand operand. A "struct tomoyo_argv" for TOMOYO_ARGV_ENTRY, a
625 * "struct tomoyo_envp" for TOMOYO_ENVP_ENTRY is attached to the tail
626 * of the array of this struct.
630 * Right hand operand. A "struct tomoyo_number_union" for
631 * TOMOYO_NUMBER_UNION, a "struct tomoyo_name_union" for
632 * TOMOYO_NAME_UNION is attached to the tail of the array of this
636 /* Equation operator. True if equals or overlaps, false otherwise. */
640 /* Structure for optional arguments. */
641 struct tomoyo_condition
{
642 struct tomoyo_shared_acl_head head
;
643 u32 size
; /* Memory size allocated for this entry. */
644 u16 condc
; /* Number of conditions in this struct. */
645 u16 numbers_count
; /* Number of "struct tomoyo_number_union values". */
646 u16 names_count
; /* Number of "struct tomoyo_name_union names". */
647 u16 argc
; /* Number of "struct tomoyo_argv". */
648 u16 envc
; /* Number of "struct tomoyo_envp". */
649 u8 grant_log
; /* One of values in "enum tomoyo_grant_log". */
651 * struct tomoyo_condition_element condition[condc];
652 * struct tomoyo_number_union values[numbers_count];
653 * struct tomoyo_name_union names[names_count];
654 * struct tomoyo_argv argv[argc];
655 * struct tomoyo_envp envp[envc];
659 /* Common header for individual entries. */
660 struct tomoyo_acl_info
{
661 struct list_head list
;
662 struct tomoyo_condition
*cond
; /* Maybe NULL. */
664 u8 type
; /* One of values in "enum tomoyo_acl_entry_type_index". */
667 /* Structure for domain information. */
668 struct tomoyo_domain_info
{
669 struct list_head list
;
670 struct list_head acl_info_list
;
671 /* Name of this domain. Never NULL. */
672 const struct tomoyo_path_info
*domainname
;
673 /* Namespace for this domain. Never NULL. */
674 struct tomoyo_policy_namespace
*ns
;
675 u8 profile
; /* Profile number to use. */
676 u8 group
; /* Group number to use. */
677 bool is_deleted
; /* Delete flag. */
678 bool flags
[TOMOYO_MAX_DOMAIN_INFO_FLAGS
];
679 atomic_t users
; /* Number of referring credentials. */
683 * Structure for "file execute", "file read", "file write", "file append",
684 * "file unlink", "file getattr", "file rmdir", "file truncate",
685 * "file symlink", "file chroot" and "file unmount" directive.
687 struct tomoyo_path_acl
{
688 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_PATH_ACL */
689 u16 perm
; /* Bitmask of values in "enum tomoyo_path_acl_index". */
690 struct tomoyo_name_union name
;
694 * Structure for "file create", "file mkdir", "file mkfifo", "file mksock",
695 * "file ioctl", "file chmod", "file chown" and "file chgrp" directive.
697 struct tomoyo_path_number_acl
{
698 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */
699 /* Bitmask of values in "enum tomoyo_path_number_acl_index". */
701 struct tomoyo_name_union name
;
702 struct tomoyo_number_union number
;
705 /* Structure for "file mkblock" and "file mkchar" directive. */
706 struct tomoyo_mkdev_acl
{
707 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_MKDEV_ACL */
708 u8 perm
; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */
709 struct tomoyo_name_union name
;
710 struct tomoyo_number_union mode
;
711 struct tomoyo_number_union major
;
712 struct tomoyo_number_union minor
;
716 * Structure for "file rename", "file link" and "file pivot_root" directive.
718 struct tomoyo_path2_acl
{
719 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_PATH2_ACL */
720 u8 perm
; /* Bitmask of values in "enum tomoyo_path2_acl_index". */
721 struct tomoyo_name_union name1
;
722 struct tomoyo_name_union name2
;
725 /* Structure for "file mount" directive. */
726 struct tomoyo_mount_acl
{
727 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_MOUNT_ACL */
728 struct tomoyo_name_union dev_name
;
729 struct tomoyo_name_union dir_name
;
730 struct tomoyo_name_union fs_type
;
731 struct tomoyo_number_union flags
;
734 /* Structure for "misc env" directive in domain policy. */
735 struct tomoyo_env_acl
{
736 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_ENV_ACL */
737 const struct tomoyo_path_info
*env
; /* environment variable */
740 /* Structure for "network inet" directive. */
741 struct tomoyo_inet_acl
{
742 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_INET_ACL */
744 u8 perm
; /* Bitmask of values in "enum tomoyo_network_acl_index" */
745 struct tomoyo_ipaddr_union address
;
746 struct tomoyo_number_union port
;
749 /* Structure for "network unix" directive. */
750 struct tomoyo_unix_acl
{
751 struct tomoyo_acl_info head
; /* type = TOMOYO_TYPE_UNIX_ACL */
753 u8 perm
; /* Bitmask of values in "enum tomoyo_network_acl_index" */
754 struct tomoyo_name_union name
;
757 /* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */
758 struct tomoyo_acl_param
{
760 struct list_head
*list
;
761 struct tomoyo_policy_namespace
*ns
;
765 #define TOMOYO_MAX_IO_READ_QUEUE 64
768 * Structure for reading/writing policy via /sys/kernel/security/tomoyo
771 struct tomoyo_io_buffer
{
772 void (*read
) (struct tomoyo_io_buffer
*);
773 int (*write
) (struct tomoyo_io_buffer
*);
774 int (*poll
) (struct file
*file
, poll_table
*wait
);
775 /* Exclusive lock for this structure. */
777 char __user
*read_user_buf
;
778 size_t read_user_buf_avail
;
780 struct list_head
*ns
;
781 struct list_head
*domain
;
782 struct list_head
*group
;
783 struct list_head
*acl
;
786 unsigned int query_index
;
794 bool print_this_domain_only
;
795 bool print_transition_related_only
;
796 bool print_cond_part
;
797 const char *w
[TOMOYO_MAX_IO_READ_QUEUE
];
800 struct tomoyo_policy_namespace
*ns
;
801 /* The position currently writing to. */
802 struct tomoyo_domain_info
*domain
;
803 /* Bytes available for writing. */
807 /* Buffer for reading. */
809 /* Size of read buffer. */
811 /* Buffer for writing. */
813 /* Size of write buffer. */
814 size_t writebuf_size
;
815 /* Type of this interface. */
816 enum tomoyo_securityfs_interface_index type
;
817 /* Users counter protected by tomoyo_io_buffer_list_lock. */
819 /* List for telling GC not to kfree() elements. */
820 struct list_head list
;
824 * Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/
825 * "no_keep_domain" keyword.
827 struct tomoyo_transition_control
{
828 struct tomoyo_acl_head head
;
829 u8 type
; /* One of values in "enum tomoyo_transition_type". */
830 /* True if the domainname is tomoyo_get_last_name(). */
832 const struct tomoyo_path_info
*domainname
; /* Maybe NULL */
833 const struct tomoyo_path_info
*program
; /* Maybe NULL */
836 /* Structure for "aggregator" keyword. */
837 struct tomoyo_aggregator
{
838 struct tomoyo_acl_head head
;
839 const struct tomoyo_path_info
*original_name
;
840 const struct tomoyo_path_info
*aggregated_name
;
843 /* Structure for policy manager. */
844 struct tomoyo_manager
{
845 struct tomoyo_acl_head head
;
846 bool is_domain
; /* True if manager is a domainname. */
847 /* A path to program or a domainname. */
848 const struct tomoyo_path_info
*manager
;
851 struct tomoyo_preference
{
852 unsigned int learning_max_entry
;
853 bool enforcing_verbose
;
854 bool learning_verbose
;
855 bool permissive_verbose
;
858 /* Structure for /sys/kernel/security/tomnoyo/profile interface. */
859 struct tomoyo_profile
{
860 const struct tomoyo_path_info
*comment
;
861 struct tomoyo_preference
*learning
;
862 struct tomoyo_preference
*permissive
;
863 struct tomoyo_preference
*enforcing
;
864 struct tomoyo_preference preference
;
866 u8 config
[TOMOYO_MAX_MAC_INDEX
+ TOMOYO_MAX_MAC_CATEGORY_INDEX
];
867 unsigned int pref
[TOMOYO_MAX_PREF
];
870 /* Structure for representing YYYY/MM/DD hh/mm/ss. */
880 /* Structure for policy namespace. */
881 struct tomoyo_policy_namespace
{
882 /* Profile table. Memory is allocated as needed. */
883 struct tomoyo_profile
*profile_ptr
[TOMOYO_MAX_PROFILES
];
884 /* List of "struct tomoyo_group". */
885 struct list_head group_list
[TOMOYO_MAX_GROUP
];
886 /* List of policy. */
887 struct list_head policy_list
[TOMOYO_MAX_POLICY
];
888 /* The global ACL referred by "use_group" keyword. */
889 struct list_head acl_group
[TOMOYO_MAX_ACL_GROUPS
];
890 /* List for connecting to tomoyo_namespace_list list. */
891 struct list_head namespace_list
;
892 /* Profile version. Currently only 20100903 is defined. */
893 unsigned int profile_version
;
894 /* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */
898 /********** Function prototypes. **********/
900 bool tomoyo_address_matches_group(const bool is_ipv6
, const __be32
*address
,
901 const struct tomoyo_group
*group
);
902 bool tomoyo_compare_number_union(const unsigned long value
,
903 const struct tomoyo_number_union
*ptr
);
904 bool tomoyo_condition(struct tomoyo_request_info
*r
,
905 const struct tomoyo_condition
*cond
);
906 bool tomoyo_correct_domain(const unsigned char *domainname
);
907 bool tomoyo_correct_path(const char *filename
);
908 bool tomoyo_correct_word(const char *string
);
909 bool tomoyo_domain_def(const unsigned char *buffer
);
910 bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info
*r
);
911 bool tomoyo_dump_page(struct linux_binprm
*bprm
, unsigned long pos
,
912 struct tomoyo_page_dump
*dump
);
913 bool tomoyo_memory_ok(void *ptr
);
914 bool tomoyo_number_matches_group(const unsigned long min
,
915 const unsigned long max
,
916 const struct tomoyo_group
*group
);
917 bool tomoyo_parse_ipaddr_union(struct tomoyo_acl_param
*param
,
918 struct tomoyo_ipaddr_union
*ptr
);
919 bool tomoyo_parse_name_union(struct tomoyo_acl_param
*param
,
920 struct tomoyo_name_union
*ptr
);
921 bool tomoyo_parse_number_union(struct tomoyo_acl_param
*param
,
922 struct tomoyo_number_union
*ptr
);
923 bool tomoyo_path_matches_pattern(const struct tomoyo_path_info
*filename
,
924 const struct tomoyo_path_info
*pattern
);
925 bool tomoyo_permstr(const char *string
, const char *keyword
);
926 bool tomoyo_str_starts(char **src
, const char *find
);
927 char *tomoyo_encode(const char *str
);
928 char *tomoyo_encode2(const char *str
, int str_len
);
929 char *tomoyo_init_log(struct tomoyo_request_info
*r
, int len
, const char *fmt
,
931 char *tomoyo_read_token(struct tomoyo_acl_param
*param
);
932 char *tomoyo_realpath_from_path(struct path
*path
);
933 char *tomoyo_realpath_nofollow(const char *pathname
);
934 const char *tomoyo_get_exe(void);
935 const char *tomoyo_yesno(const unsigned int value
);
936 const struct tomoyo_path_info
*tomoyo_compare_name_union
937 (const struct tomoyo_path_info
*name
, const struct tomoyo_name_union
*ptr
);
938 const struct tomoyo_path_info
*tomoyo_get_name(const char *name
);
939 const struct tomoyo_path_info
*tomoyo_path_matches_group
940 (const struct tomoyo_path_info
*pathname
, const struct tomoyo_group
*group
);
941 int tomoyo_check_open_permission(struct tomoyo_domain_info
*domain
,
942 struct path
*path
, const int flag
);
943 int tomoyo_close_control(struct tomoyo_io_buffer
*head
);
944 int tomoyo_env_perm(struct tomoyo_request_info
*r
, const char *env
);
945 int tomoyo_find_next_domain(struct linux_binprm
*bprm
);
946 int tomoyo_get_mode(const struct tomoyo_policy_namespace
*ns
, const u8 profile
,
948 int tomoyo_init_request_info(struct tomoyo_request_info
*r
,
949 struct tomoyo_domain_info
*domain
,
951 int tomoyo_mkdev_perm(const u8 operation
, struct path
*path
,
952 const unsigned int mode
, unsigned int dev
);
953 int tomoyo_mount_permission(char *dev_name
, struct path
*path
,
954 const char *type
, unsigned long flags
,
956 int tomoyo_open_control(const u8 type
, struct file
*file
);
957 int tomoyo_path2_perm(const u8 operation
, struct path
*path1
,
959 int tomoyo_path_number_perm(const u8 operation
, struct path
*path
,
960 unsigned long number
);
961 int tomoyo_path_perm(const u8 operation
, struct path
*path
,
963 int tomoyo_path_permission(struct tomoyo_request_info
*r
, u8 operation
,
964 const struct tomoyo_path_info
*filename
);
965 int tomoyo_poll_control(struct file
*file
, poll_table
*wait
);
966 int tomoyo_poll_log(struct file
*file
, poll_table
*wait
);
967 int tomoyo_socket_bind_permission(struct socket
*sock
, struct sockaddr
*addr
,
969 int tomoyo_socket_connect_permission(struct socket
*sock
,
970 struct sockaddr
*addr
, int addr_len
);
971 int tomoyo_socket_listen_permission(struct socket
*sock
);
972 int tomoyo_socket_sendmsg_permission(struct socket
*sock
, struct msghdr
*msg
,
974 int tomoyo_supervisor(struct tomoyo_request_info
*r
, const char *fmt
, ...)
976 int tomoyo_update_domain(struct tomoyo_acl_info
*new_entry
, const int size
,
977 struct tomoyo_acl_param
*param
,
978 bool (*check_duplicate
)
979 (const struct tomoyo_acl_info
*,
980 const struct tomoyo_acl_info
*),
981 bool (*merge_duplicate
)
982 (struct tomoyo_acl_info
*, struct tomoyo_acl_info
*,
984 int tomoyo_update_policy(struct tomoyo_acl_head
*new_entry
, const int size
,
985 struct tomoyo_acl_param
*param
,
986 bool (*check_duplicate
)
987 (const struct tomoyo_acl_head
*,
988 const struct tomoyo_acl_head
*));
989 int tomoyo_write_aggregator(struct tomoyo_acl_param
*param
);
990 int tomoyo_write_file(struct tomoyo_acl_param
*param
);
991 int tomoyo_write_group(struct tomoyo_acl_param
*param
, const u8 type
);
992 int tomoyo_write_misc(struct tomoyo_acl_param
*param
);
993 int tomoyo_write_inet_network(struct tomoyo_acl_param
*param
);
994 int tomoyo_write_transition_control(struct tomoyo_acl_param
*param
,
996 int tomoyo_write_unix_network(struct tomoyo_acl_param
*param
);
997 ssize_t
tomoyo_read_control(struct tomoyo_io_buffer
*head
, char __user
*buffer
,
998 const int buffer_len
);
999 ssize_t
tomoyo_write_control(struct tomoyo_io_buffer
*head
,
1000 const char __user
*buffer
, const int buffer_len
);
1001 struct tomoyo_condition
*tomoyo_get_condition(struct tomoyo_acl_param
*param
);
1002 struct tomoyo_domain_info
*tomoyo_assign_domain(const char *domainname
,
1003 const bool transit
);
1004 struct tomoyo_domain_info
*tomoyo_find_domain(const char *domainname
);
1005 struct tomoyo_group
*tomoyo_get_group(struct tomoyo_acl_param
*param
,
1007 struct tomoyo_policy_namespace
*tomoyo_assign_namespace
1008 (const char *domainname
);
1009 struct tomoyo_profile
*tomoyo_profile(const struct tomoyo_policy_namespace
*ns
,
1011 unsigned int tomoyo_check_flags(const struct tomoyo_domain_info
*domain
,
1013 u8
tomoyo_parse_ulong(unsigned long *result
, char **str
);
1014 void *tomoyo_commit_ok(void *data
, const unsigned int size
);
1015 void __init
tomoyo_load_builtin_policy(void);
1016 void __init
tomoyo_mm_init(void);
1017 void tomoyo_check_acl(struct tomoyo_request_info
*r
,
1018 bool (*check_entry
) (struct tomoyo_request_info
*,
1019 const struct tomoyo_acl_info
*));
1020 void tomoyo_check_profile(void);
1021 void tomoyo_convert_time(time_t time
, struct tomoyo_time
*stamp
);
1022 void tomoyo_del_condition(struct list_head
*element
);
1023 void tomoyo_fill_path_info(struct tomoyo_path_info
*ptr
);
1024 void tomoyo_get_attributes(struct tomoyo_obj_info
*obj
);
1025 void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace
*ns
);
1026 void tomoyo_io_printf(struct tomoyo_io_buffer
*head
, const char *fmt
, ...)
1028 void tomoyo_load_policy(const char *filename
);
1029 void tomoyo_memory_free(void *ptr
);
1030 void tomoyo_normalize_line(unsigned char *buffer
);
1031 void tomoyo_notify_gc(struct tomoyo_io_buffer
*head
, const bool is_register
);
1032 void tomoyo_print_ip(char *buf
, const unsigned int size
,
1033 const struct tomoyo_ipaddr_union
*ptr
);
1034 void tomoyo_print_ulong(char *buffer
, const int buffer_len
,
1035 const unsigned long value
, const u8 type
);
1036 void tomoyo_put_name_union(struct tomoyo_name_union
*ptr
);
1037 void tomoyo_put_number_union(struct tomoyo_number_union
*ptr
);
1038 void tomoyo_read_log(struct tomoyo_io_buffer
*head
);
1039 void tomoyo_update_stat(const u8 index
);
1040 void tomoyo_warn_oom(const char *function
);
1041 void tomoyo_write_log(struct tomoyo_request_info
*r
, const char *fmt
, ...)
1043 void tomoyo_write_log2(struct tomoyo_request_info
*r
, int len
, const char *fmt
,
1046 /********** External variable definitions. **********/
1048 extern bool tomoyo_policy_loaded
;
1049 extern const char * const tomoyo_condition_keyword
1050 [TOMOYO_MAX_CONDITION_KEYWORD
];
1051 extern const char * const tomoyo_dif
[TOMOYO_MAX_DOMAIN_INFO_FLAGS
];
1052 extern const char * const tomoyo_mac_keywords
[TOMOYO_MAX_MAC_INDEX
1053 + TOMOYO_MAX_MAC_CATEGORY_INDEX
];
1054 extern const char * const tomoyo_mode
[TOMOYO_CONFIG_MAX_MODE
];
1055 extern const char * const tomoyo_path_keyword
[TOMOYO_MAX_PATH_OPERATION
];
1056 extern const char * const tomoyo_proto_keyword
[TOMOYO_SOCK_MAX
];
1057 extern const char * const tomoyo_socket_keyword
[TOMOYO_MAX_NETWORK_OPERATION
];
1058 extern const u8 tomoyo_index2category
[TOMOYO_MAX_MAC_INDEX
];
1059 extern const u8 tomoyo_pn2mac
[TOMOYO_MAX_PATH_NUMBER_OPERATION
];
1060 extern const u8 tomoyo_pnnn2mac
[TOMOYO_MAX_MKDEV_OPERATION
];
1061 extern const u8 tomoyo_pp2mac
[TOMOYO_MAX_PATH2_OPERATION
];
1062 extern struct list_head tomoyo_condition_list
;
1063 extern struct list_head tomoyo_domain_list
;
1064 extern struct list_head tomoyo_name_list
[TOMOYO_MAX_HASH
];
1065 extern struct list_head tomoyo_namespace_list
;
1066 extern struct mutex tomoyo_policy_lock
;
1067 extern struct srcu_struct tomoyo_ss
;
1068 extern struct tomoyo_domain_info tomoyo_kernel_domain
;
1069 extern struct tomoyo_policy_namespace tomoyo_kernel_namespace
;
1070 extern unsigned int tomoyo_memory_quota
[TOMOYO_MAX_MEMORY_STAT
];
1071 extern unsigned int tomoyo_memory_used
[TOMOYO_MAX_MEMORY_STAT
];
1073 /********** Inlined functions. **********/
1076 * tomoyo_read_lock - Take lock for protecting policy.
1078 * Returns index number for tomoyo_read_unlock().
1080 static inline int tomoyo_read_lock(void)
1082 return srcu_read_lock(&tomoyo_ss
);
1086 * tomoyo_read_unlock - Release lock for protecting policy.
1088 * @idx: Index number returned by tomoyo_read_lock().
1092 static inline void tomoyo_read_unlock(int idx
)
1094 srcu_read_unlock(&tomoyo_ss
, idx
);
1098 * tomoyo_sys_getppid - Copy of getppid().
1100 * Returns parent process's PID.
1102 * Alpha does not have getppid() defined. To be able to build this module on
1103 * Alpha, I have to copy getppid() from kernel/timer.c.
1105 static inline pid_t
tomoyo_sys_getppid(void)
1109 pid
= task_tgid_vnr(current
->real_parent
);
1115 * tomoyo_sys_getpid - Copy of getpid().
1117 * Returns current thread's PID.
1119 * Alpha does not have getpid() defined. To be able to build this module on
1120 * Alpha, I have to copy getpid() from kernel/timer.c.
1122 static inline pid_t
tomoyo_sys_getpid(void)
1124 return task_tgid_vnr(current
);
1128 * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure.
1130 * @a: Pointer to "struct tomoyo_path_info".
1131 * @b: Pointer to "struct tomoyo_path_info".
1133 * Returns true if @a == @b, false otherwise.
1135 static inline bool tomoyo_pathcmp(const struct tomoyo_path_info
*a
,
1136 const struct tomoyo_path_info
*b
)
1138 return a
->hash
!= b
->hash
|| strcmp(a
->name
, b
->name
);
1142 * tomoyo_put_name - Drop reference on "struct tomoyo_name".
1144 * @name: Pointer to "struct tomoyo_path_info". Maybe NULL.
1148 static inline void tomoyo_put_name(const struct tomoyo_path_info
*name
)
1151 struct tomoyo_name
*ptr
=
1152 container_of(name
, typeof(*ptr
), entry
);
1153 atomic_dec(&ptr
->head
.users
);
1158 * tomoyo_put_condition - Drop reference on "struct tomoyo_condition".
1160 * @cond: Pointer to "struct tomoyo_condition". Maybe NULL.
1164 static inline void tomoyo_put_condition(struct tomoyo_condition
*cond
)
1167 atomic_dec(&cond
->head
.users
);
1171 * tomoyo_put_group - Drop reference on "struct tomoyo_group".
1173 * @group: Pointer to "struct tomoyo_group". Maybe NULL.
1177 static inline void tomoyo_put_group(struct tomoyo_group
*group
)
1180 atomic_dec(&group
->head
.users
);
1184 * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread.
1186 * Returns pointer to "struct tomoyo_domain_info" for current thread.
1188 static inline struct tomoyo_domain_info
*tomoyo_domain(void)
1190 return current_cred()->security
;
1194 * tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread.
1196 * @task: Pointer to "struct task_struct".
1198 * Returns pointer to "struct tomoyo_security" for specified thread.
1200 static inline struct tomoyo_domain_info
*tomoyo_real_domain(struct task_struct
1203 return task_cred_xxx(task
, security
);
1207 * tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry.
1209 * @a: Pointer to "struct tomoyo_name_union".
1210 * @b: Pointer to "struct tomoyo_name_union".
1212 * Returns true if @a == @b, false otherwise.
1214 static inline bool tomoyo_same_name_union
1215 (const struct tomoyo_name_union
*a
, const struct tomoyo_name_union
*b
)
1217 return a
->filename
== b
->filename
&& a
->group
== b
->group
;
1221 * tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry.
1223 * @a: Pointer to "struct tomoyo_number_union".
1224 * @b: Pointer to "struct tomoyo_number_union".
1226 * Returns true if @a == @b, false otherwise.
1228 static inline bool tomoyo_same_number_union
1229 (const struct tomoyo_number_union
*a
, const struct tomoyo_number_union
*b
)
1231 return a
->values
[0] == b
->values
[0] && a
->values
[1] == b
->values
[1] &&
1232 a
->group
== b
->group
&& a
->value_type
[0] == b
->value_type
[0] &&
1233 a
->value_type
[1] == b
->value_type
[1];
1237 * tomoyo_same_ipaddr_union - Check for duplicated "struct tomoyo_ipaddr_union" entry.
1239 * @a: Pointer to "struct tomoyo_ipaddr_union".
1240 * @b: Pointer to "struct tomoyo_ipaddr_union".
1242 * Returns true if @a == @b, false otherwise.
1244 static inline bool tomoyo_same_ipaddr_union
1245 (const struct tomoyo_ipaddr_union
*a
, const struct tomoyo_ipaddr_union
*b
)
1247 return !memcmp(a
->ip
, b
->ip
, sizeof(a
->ip
)) && a
->group
== b
->group
&&
1248 a
->is_ipv6
== b
->is_ipv6
;
1252 * tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread.
1254 * Returns pointer to "struct tomoyo_policy_namespace" for current thread.
1256 static inline struct tomoyo_policy_namespace
*tomoyo_current_namespace(void)
1258 return tomoyo_domain()->ns
;
1261 #if defined(CONFIG_SLOB)
1264 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
1266 * @size: Size to be rounded up.
1270 * Since SLOB does not round up, this function simply returns @size.
1272 static inline int tomoyo_round2(size_t size
)
1280 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
1282 * @size: Size to be rounded up.
1284 * Returns rounded size.
1286 * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of
1289 static inline int tomoyo_round2(size_t size
)
1291 #if PAGE_SIZE == 4096
1298 while (size
> bsize
)
1306 * list_for_each_cookie - iterate over a list with cookie.
1307 * @pos: the &struct list_head to use as a loop cursor.
1308 * @head: the head for your list.
1310 #define list_for_each_cookie(pos, head) \
1312 pos = srcu_dereference((head)->next, &tomoyo_ss); \
1313 for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss))
1315 #endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */