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,
202 /* Index numbers for access controls with one pathname. */
203 enum tomoyo_path_acl_index {
211 TOMOYO_TYPE_TRUNCATE,
215 TOMOYO_MAX_PATH_OPERATION
218 /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
219 enum tomoyo_memory_stat_type {
220 TOMOYO_MEMORY_POLICY,
223 TOMOYO_MAX_MEMORY_STAT
226 enum tomoyo_mkdev_acl_index {
229 TOMOYO_MAX_MKDEV_OPERATION
232 /* Index numbers for access controls with two pathnames. */
233 enum tomoyo_path2_acl_index {
236 TOMOYO_TYPE_PIVOT_ROOT,
237 TOMOYO_MAX_PATH2_OPERATION
240 /* Index numbers for access controls with one pathname and one number. */
241 enum tomoyo_path_number_acl_index {
250 TOMOYO_MAX_PATH_NUMBER_OPERATION
253 /* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */
254 enum tomoyo_securityfs_interface_index {
256 TOMOYO_EXCEPTIONPOLICY,
257 TOMOYO_PROCESS_STATUS,
267 /* Index numbers for special mount operations. */
268 enum tomoyo_special_mount {
269 TOMOYO_MOUNT_BIND, /* mount --bind /source /dest */
270 TOMOYO_MOUNT_MOVE, /* mount --move /old /new */
271 TOMOYO_MOUNT_REMOUNT, /* mount -o remount /dir */
272 TOMOYO_MOUNT_MAKE_UNBINDABLE, /* mount --make-unbindable /dir */
273 TOMOYO_MOUNT_MAKE_PRIVATE, /* mount --make-private /dir */
274 TOMOYO_MOUNT_MAKE_SLAVE, /* mount --make-slave /dir */
275 TOMOYO_MOUNT_MAKE_SHARED, /* mount --make-shared /dir */
276 TOMOYO_MAX_SPECIAL_MOUNT
279 /* Index numbers for functionality. */
280 enum tomoyo_mac_index {
281 TOMOYO_MAC_FILE_EXECUTE,
282 TOMOYO_MAC_FILE_OPEN,
283 TOMOYO_MAC_FILE_CREATE,
284 TOMOYO_MAC_FILE_UNLINK,
285 TOMOYO_MAC_FILE_GETATTR,
286 TOMOYO_MAC_FILE_MKDIR,
287 TOMOYO_MAC_FILE_RMDIR,
288 TOMOYO_MAC_FILE_MKFIFO,
289 TOMOYO_MAC_FILE_MKSOCK,
290 TOMOYO_MAC_FILE_TRUNCATE,
291 TOMOYO_MAC_FILE_SYMLINK,
292 TOMOYO_MAC_FILE_MKBLOCK,
293 TOMOYO_MAC_FILE_MKCHAR,
294 TOMOYO_MAC_FILE_LINK,
295 TOMOYO_MAC_FILE_RENAME,
296 TOMOYO_MAC_FILE_CHMOD,
297 TOMOYO_MAC_FILE_CHOWN,
298 TOMOYO_MAC_FILE_CHGRP,
299 TOMOYO_MAC_FILE_IOCTL,
300 TOMOYO_MAC_FILE_CHROOT,
301 TOMOYO_MAC_FILE_MOUNT,
302 TOMOYO_MAC_FILE_UMOUNT,
303 TOMOYO_MAC_FILE_PIVOT_ROOT,
308 /* Index numbers for category of functionality. */
309 enum tomoyo_mac_category_index {
310 TOMOYO_MAC_CATEGORY_FILE,
311 TOMOYO_MAC_CATEGORY_MISC,
312 TOMOYO_MAX_MAC_CATEGORY_INDEX
316 * Retry this request. Returned by tomoyo_supervisor() if policy violation has
317 * occurred in enforcing mode and the userspace daemon decided to retry.
319 * We must choose a positive value in order to distinguish "granted" (which is
320 * 0) and "rejected" (which is a negative value) and "retry".
322 #define TOMOYO_RETRY_REQUEST 1
324 /* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
325 enum tomoyo_policy_stat_type {
326 /* Do not change this order. */
327 TOMOYO_STAT_POLICY_UPDATES,
328 TOMOYO_STAT_POLICY_LEARNING, /* == TOMOYO_CONFIG_LEARNING */
329 TOMOYO_STAT_POLICY_PERMISSIVE, /* == TOMOYO_CONFIG_PERMISSIVE */
330 TOMOYO_STAT_POLICY_ENFORCING, /* == TOMOYO_CONFIG_ENFORCING */
331 TOMOYO_MAX_POLICY_STAT
334 /* Index numbers for profile's PREFERENCE values. */
335 enum tomoyo_pref_index {
336 TOMOYO_PREF_MAX_AUDIT_LOG,
337 TOMOYO_PREF_MAX_LEARNING_ENTRY,
341 /********** Structure definitions. **********/
343 /* Common header for holding ACL entries. */
344 struct tomoyo_acl_head {
345 struct list_head list;
349 /* Common header for shared entries. */
350 struct tomoyo_shared_acl_head {
351 struct list_head list;
355 struct tomoyo_policy_namespace;
357 /* Structure for request info. */
358 struct tomoyo_request_info {
360 * For holding parameters specific to operations which deal files.
361 * NULL if not dealing files.
363 struct tomoyo_obj_info *obj;
365 * For holding parameters specific to execve() request.
366 * NULL if not dealing do_execve().
368 struct tomoyo_execve *ee;
369 struct tomoyo_domain_info *domain;
370 /* For holding parameters. */
373 const struct tomoyo_path_info *filename;
374 /* For using wildcards at tomoyo_find_next_domain(). */
375 const struct tomoyo_path_info *matched_path;
376 /* One of values in "enum tomoyo_path_acl_index". */
380 const struct tomoyo_path_info *filename1;
381 const struct tomoyo_path_info *filename2;
382 /* One of values in "enum tomoyo_path2_acl_index". */
386 const struct tomoyo_path_info *filename;
390 /* One of values in "enum tomoyo_mkdev_acl_index". */
394 const struct tomoyo_path_info *filename;
395 unsigned long number;
398 * "enum tomoyo_path_number_acl_index".
403 const struct tomoyo_path_info *name;
406 const struct tomoyo_path_info *type;
407 const struct tomoyo_path_info *dir;
408 const struct tomoyo_path_info *dev;
417 u8 mode; /* One of tomoyo_mode_index . */
421 /* Structure for holding a token. */
422 struct tomoyo_path_info {
424 u32 hash; /* = full_name_hash(name, strlen(name)) */
425 u16 const_len; /* = tomoyo_const_part_length(name) */
426 bool is_dir; /* = tomoyo_strendswith(name, "/") */
427 bool is_patterned; /* = tomoyo_path_contains_pattern(name) */
430 /* Structure for holding string data. */
432 struct tomoyo_shared_acl_head head;
433 struct tomoyo_path_info entry;
436 /* Structure for holding a word. */
437 struct tomoyo_name_union {
438 /* Either @filename or @group is NULL. */
439 const struct tomoyo_path_info *filename;
440 struct tomoyo_group *group;
443 /* Structure for holding a number. */
444 struct tomoyo_number_union {
445 unsigned long values[2];
446 struct tomoyo_group *group; /* Maybe NULL. */
447 /* One of values in "enum tomoyo_value_type". */
451 /* Structure for "path_group"/"number_group" directive. */
452 struct tomoyo_group {
453 struct tomoyo_shared_acl_head head;
454 const struct tomoyo_path_info *group_name;
455 struct list_head member_list;
458 /* Structure for "path_group" directive. */
459 struct tomoyo_path_group {
460 struct tomoyo_acl_head head;
461 const struct tomoyo_path_info *member_name;
464 /* Structure for "number_group" directive. */
465 struct tomoyo_number_group {
466 struct tomoyo_acl_head head;
467 struct tomoyo_number_union number;
470 /* Subset of "struct stat". Used by conditional ACL and audit logs. */
471 struct tomoyo_mini_stat {
480 /* Structure for dumping argv[] and envp[] of "struct linux_binprm". */
481 struct tomoyo_page_dump {
482 struct page *page; /* Previously dumped page. */
483 char *data; /* Contents of "page". Size is PAGE_SIZE. */
486 /* Structure for attribute checks in addition to pathname checks. */
487 struct tomoyo_obj_info {
489 * True if tomoyo_get_attributes() was already called, false otherwise.
492 /* True if @stat[] is valid. */
493 bool stat_valid[TOMOYO_MAX_PATH_STAT];
494 /* First pathname. Initialized with { NULL, NULL } if no path. */
496 /* Second pathname. Initialized with { NULL, NULL } if no path. */
499 * Information on @path1, @path1's parent directory, @path2, @path2's
502 struct tomoyo_mini_stat stat[TOMOYO_MAX_PATH_STAT];
504 * Content of symbolic link to be created. NULL for operations other
507 struct tomoyo_path_info *symlink_target;
510 /* Structure for argv[]. */
513 const struct tomoyo_path_info *value;
517 /* Structure for envp[]. */
519 const struct tomoyo_path_info *name;
520 const struct tomoyo_path_info *value;
524 /* Structure for execve() operation. */
525 struct tomoyo_execve {
526 struct tomoyo_request_info r;
527 struct tomoyo_obj_info obj;
528 struct linux_binprm *bprm;
529 /* For dumping argv[] and envp[]. */
530 struct tomoyo_page_dump dump;
531 /* For temporary use. */
532 char *tmp; /* Size is TOMOYO_EXEC_TMPSIZE bytes */
535 /* Structure for entries which follows "struct tomoyo_condition". */
536 struct tomoyo_condition_element {
538 * Left hand operand. A "struct tomoyo_argv" for TOMOYO_ARGV_ENTRY, a
539 * "struct tomoyo_envp" for TOMOYO_ENVP_ENTRY is attached to the tail
540 * of the array of this struct.
544 * Right hand operand. A "struct tomoyo_number_union" for
545 * TOMOYO_NUMBER_UNION, a "struct tomoyo_name_union" for
546 * TOMOYO_NAME_UNION is attached to the tail of the array of this
550 /* Equation operator. True if equals or overlaps, false otherwise. */
554 /* Structure for optional arguments. */
555 struct tomoyo_condition {
556 struct tomoyo_shared_acl_head head;
557 u32 size; /* Memory size allocated for this entry. */
558 u16 condc; /* Number of conditions in this struct. */
559 u16 numbers_count; /* Number of "struct tomoyo_number_union values". */
560 u16 names_count; /* Number of "struct tomoyo_name_union names". */
561 u16 argc; /* Number of "struct tomoyo_argv". */
562 u16 envc; /* Number of "struct tomoyo_envp". */
564 * struct tomoyo_condition_element condition[condc];
565 * struct tomoyo_number_union values[numbers_count];
566 * struct tomoyo_name_union names[names_count];
567 * struct tomoyo_argv argv[argc];
568 * struct tomoyo_envp envp[envc];
572 /* Common header for individual entries. */
573 struct tomoyo_acl_info {
574 struct list_head list;
575 struct tomoyo_condition *cond; /* Maybe NULL. */
577 u8 type; /* One of values in "enum tomoyo_acl_entry_type_index". */
580 /* Structure for domain information. */
581 struct tomoyo_domain_info {
582 struct list_head list;
583 struct list_head acl_info_list;
584 /* Name of this domain. Never NULL. */
585 const struct tomoyo_path_info *domainname;
586 /* Namespace for this domain. Never NULL. */
587 struct tomoyo_policy_namespace *ns;
588 u8 profile; /* Profile number to use. */
589 u8 group; /* Group number to use. */
590 bool is_deleted; /* Delete flag. */
591 bool flags[TOMOYO_MAX_DOMAIN_INFO_FLAGS];
592 atomic_t users; /* Number of referring credentials. */
596 * Structure for "file execute", "file read", "file write", "file append",
597 * "file unlink", "file getattr", "file rmdir", "file truncate",
598 * "file symlink", "file chroot" and "file unmount" directive.
600 struct tomoyo_path_acl {
601 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */
602 u16 perm; /* Bitmask of values in "enum tomoyo_path_acl_index". */
603 struct tomoyo_name_union name;
607 * Structure for "file create", "file mkdir", "file mkfifo", "file mksock",
608 * "file ioctl", "file chmod", "file chown" and "file chgrp" directive.
610 struct tomoyo_path_number_acl {
611 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */
612 /* Bitmask of values in "enum tomoyo_path_number_acl_index". */
614 struct tomoyo_name_union name;
615 struct tomoyo_number_union number;
618 /* Structure for "file mkblock" and "file mkchar" directive. */
619 struct tomoyo_mkdev_acl {
620 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */
621 u8 perm; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */
622 struct tomoyo_name_union name;
623 struct tomoyo_number_union mode;
624 struct tomoyo_number_union major;
625 struct tomoyo_number_union minor;
629 * Structure for "file rename", "file link" and "file pivot_root" directive.
631 struct tomoyo_path2_acl {
632 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */
633 u8 perm; /* Bitmask of values in "enum tomoyo_path2_acl_index". */
634 struct tomoyo_name_union name1;
635 struct tomoyo_name_union name2;
638 /* Structure for "file mount" directive. */
639 struct tomoyo_mount_acl {
640 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */
641 struct tomoyo_name_union dev_name;
642 struct tomoyo_name_union dir_name;
643 struct tomoyo_name_union fs_type;
644 struct tomoyo_number_union flags;
647 /* Structure for "misc env" directive in domain policy. */
648 struct tomoyo_env_acl {
649 struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_ENV_ACL */
650 const struct tomoyo_path_info *env; /* environment variable */
653 /* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */
654 struct tomoyo_acl_param {
656 struct list_head *list;
657 struct tomoyo_policy_namespace *ns;
661 #define TOMOYO_MAX_IO_READ_QUEUE 64
664 * Structure for reading/writing policy via /sys/kernel/security/tomoyo
667 struct tomoyo_io_buffer {
668 void (*read) (struct tomoyo_io_buffer *);
669 int (*write) (struct tomoyo_io_buffer *);
670 int (*poll) (struct file *file, poll_table *wait);
671 /* Exclusive lock for this structure. */
673 char __user *read_user_buf;
674 size_t read_user_buf_avail;
676 struct list_head *ns;
677 struct list_head *domain;
678 struct list_head *group;
679 struct list_head *acl;
682 unsigned int query_index;
690 bool print_this_domain_only;
691 bool print_transition_related_only;
692 bool print_cond_part;
693 const char *w[TOMOYO_MAX_IO_READ_QUEUE];
696 struct tomoyo_policy_namespace *ns;
697 /* The position currently writing to. */
698 struct tomoyo_domain_info *domain;
699 /* Bytes available for writing. */
703 /* Buffer for reading. */
705 /* Size of read buffer. */
707 /* Buffer for writing. */
709 /* Size of write buffer. */
710 size_t writebuf_size;
711 /* Type of this interface. */
712 enum tomoyo_securityfs_interface_index type;
713 /* Users counter protected by tomoyo_io_buffer_list_lock. */
715 /* List for telling GC not to kfree() elements. */
716 struct list_head list;
720 * Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/
721 * "no_keep_domain" keyword.
723 struct tomoyo_transition_control {
724 struct tomoyo_acl_head head;
725 u8 type; /* One of values in "enum tomoyo_transition_type". */
726 /* True if the domainname is tomoyo_get_last_name(). */
728 const struct tomoyo_path_info *domainname; /* Maybe NULL */
729 const struct tomoyo_path_info *program; /* Maybe NULL */
732 /* Structure for "aggregator" keyword. */
733 struct tomoyo_aggregator {
734 struct tomoyo_acl_head head;
735 const struct tomoyo_path_info *original_name;
736 const struct tomoyo_path_info *aggregated_name;
739 /* Structure for policy manager. */
740 struct tomoyo_manager {
741 struct tomoyo_acl_head head;
742 bool is_domain; /* True if manager is a domainname. */
743 /* A path to program or a domainname. */
744 const struct tomoyo_path_info *manager;
747 struct tomoyo_preference {
748 unsigned int learning_max_entry;
749 bool enforcing_verbose;
750 bool learning_verbose;
751 bool permissive_verbose;
754 /* Structure for /sys/kernel/security/tomnoyo/profile interface. */
755 struct tomoyo_profile {
756 const struct tomoyo_path_info *comment;
757 struct tomoyo_preference *learning;
758 struct tomoyo_preference *permissive;
759 struct tomoyo_preference *enforcing;
760 struct tomoyo_preference preference;
762 u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX];
763 unsigned int pref[TOMOYO_MAX_PREF];
766 /* Structure for representing YYYY/MM/DD hh/mm/ss. */
776 /* Structure for policy namespace. */
777 struct tomoyo_policy_namespace {
778 /* Profile table. Memory is allocated as needed. */
779 struct tomoyo_profile *profile_ptr[TOMOYO_MAX_PROFILES];
780 /* List of "struct tomoyo_group". */
781 struct list_head group_list[TOMOYO_MAX_GROUP];
782 /* List of policy. */
783 struct list_head policy_list[TOMOYO_MAX_POLICY];
784 /* The global ACL referred by "use_group" keyword. */
785 struct list_head acl_group[TOMOYO_MAX_ACL_GROUPS];
786 /* List for connecting to tomoyo_namespace_list list. */
787 struct list_head namespace_list;
788 /* Profile version. Currently only 20100903 is defined. */
789 unsigned int profile_version;
790 /* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */
794 /********** Function prototypes. **********/
796 bool tomoyo_compare_number_union(const unsigned long value,
797 const struct tomoyo_number_union *ptr);
798 bool tomoyo_condition(struct tomoyo_request_info *r,
799 const struct tomoyo_condition *cond);
800 bool tomoyo_correct_domain(const unsigned char *domainname);
801 bool tomoyo_correct_path(const char *filename);
802 bool tomoyo_correct_word(const char *string);
803 bool tomoyo_domain_def(const unsigned char *buffer);
804 bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r);
805 bool tomoyo_dump_page(struct linux_binprm *bprm, unsigned long pos,
806 struct tomoyo_page_dump *dump);
807 bool tomoyo_memory_ok(void *ptr);
808 bool tomoyo_number_matches_group(const unsigned long min,
809 const unsigned long max,
810 const struct tomoyo_group *group);
811 bool tomoyo_parse_name_union(struct tomoyo_acl_param *param,
812 struct tomoyo_name_union *ptr);
813 bool tomoyo_parse_number_union(struct tomoyo_acl_param *param,
814 struct tomoyo_number_union *ptr);
815 bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
816 const struct tomoyo_path_info *pattern);
817 bool tomoyo_permstr(const char *string, const char *keyword);
818 bool tomoyo_str_starts(char **src, const char *find);
819 char *tomoyo_encode(const char *str);
820 char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
822 char *tomoyo_read_token(struct tomoyo_acl_param *param);
823 char *tomoyo_realpath_from_path(struct path *path);
824 char *tomoyo_realpath_nofollow(const char *pathname);
825 const char *tomoyo_get_exe(void);
826 const char *tomoyo_yesno(const unsigned int value);
827 const struct tomoyo_path_info *tomoyo_compare_name_union
828 (const struct tomoyo_path_info *name, const struct tomoyo_name_union *ptr);
829 const struct tomoyo_path_info *tomoyo_get_name(const char *name);
830 const struct tomoyo_path_info *tomoyo_path_matches_group
831 (const struct tomoyo_path_info *pathname, const struct tomoyo_group *group);
832 int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
833 struct path *path, const int flag);
834 int tomoyo_close_control(struct tomoyo_io_buffer *head);
835 int tomoyo_env_perm(struct tomoyo_request_info *r, const char *env);
836 int tomoyo_find_next_domain(struct linux_binprm *bprm);
837 int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile,
839 int tomoyo_init_request_info(struct tomoyo_request_info *r,
840 struct tomoyo_domain_info *domain,
842 int tomoyo_mkdev_perm(const u8 operation, struct path *path,
843 const unsigned int mode, unsigned int dev);
844 int tomoyo_mount_permission(char *dev_name, struct path *path,
845 const char *type, unsigned long flags,
847 int tomoyo_open_control(const u8 type, struct file *file);
848 int tomoyo_path2_perm(const u8 operation, struct path *path1,
850 int tomoyo_path_number_perm(const u8 operation, struct path *path,
851 unsigned long number);
852 int tomoyo_path_perm(const u8 operation, struct path *path,
854 int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
855 const struct tomoyo_path_info *filename);
856 int tomoyo_poll_control(struct file *file, poll_table *wait);
857 int tomoyo_poll_log(struct file *file, poll_table *wait);
858 int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
860 int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size,
861 struct tomoyo_acl_param *param,
862 bool (*check_duplicate)
863 (const struct tomoyo_acl_info *,
864 const struct tomoyo_acl_info *),
865 bool (*merge_duplicate)
866 (struct tomoyo_acl_info *, struct tomoyo_acl_info *,
868 int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size,
869 struct tomoyo_acl_param *param,
870 bool (*check_duplicate)
871 (const struct tomoyo_acl_head *,
872 const struct tomoyo_acl_head *));
873 int tomoyo_write_aggregator(struct tomoyo_acl_param *param);
874 int tomoyo_write_file(struct tomoyo_acl_param *param);
875 int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type);
876 int tomoyo_write_misc(struct tomoyo_acl_param *param);
877 int tomoyo_write_transition_control(struct tomoyo_acl_param *param,
879 ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer,
880 const int buffer_len);
881 ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head,
882 const char __user *buffer, const int buffer_len);
883 struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param);
884 struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
886 struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname);
887 struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param,
889 struct tomoyo_policy_namespace *tomoyo_assign_namespace
890 (const char *domainname);
891 struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns,
893 unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
895 u8 tomoyo_parse_ulong(unsigned long *result, char **str);
896 void *tomoyo_commit_ok(void *data, const unsigned int size);
897 void __init tomoyo_load_builtin_policy(void);
898 void __init tomoyo_mm_init(void);
899 void tomoyo_check_acl(struct tomoyo_request_info *r,
900 bool (*check_entry) (struct tomoyo_request_info *,
901 const struct tomoyo_acl_info *));
902 void tomoyo_check_profile(void);
903 void tomoyo_convert_time(time_t time, struct tomoyo_time *stamp);
904 void tomoyo_del_condition(struct list_head *element);
905 void tomoyo_fill_path_info(struct tomoyo_path_info *ptr);
906 void tomoyo_get_attributes(struct tomoyo_obj_info *obj);
907 void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns);
908 void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt, ...)
910 void tomoyo_load_policy(const char *filename);
911 void tomoyo_memory_free(void *ptr);
912 void tomoyo_normalize_line(unsigned char *buffer);
913 void tomoyo_notify_gc(struct tomoyo_io_buffer *head, const bool is_register);
914 void tomoyo_print_ulong(char *buffer, const int buffer_len,
915 const unsigned long value, const u8 type);
916 void tomoyo_put_name_union(struct tomoyo_name_union *ptr);
917 void tomoyo_put_number_union(struct tomoyo_number_union *ptr);
918 void tomoyo_read_log(struct tomoyo_io_buffer *head);
919 void tomoyo_update_stat(const u8 index);
920 void tomoyo_warn_oom(const char *function);
921 void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...)
923 void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt,
926 /********** External variable definitions. **********/
928 extern bool tomoyo_policy_loaded;
929 extern const char * const tomoyo_condition_keyword
930 [TOMOYO_MAX_CONDITION_KEYWORD];
931 extern const char * const tomoyo_dif[TOMOYO_MAX_DOMAIN_INFO_FLAGS];
932 extern const char * const tomoyo_mac_keywords[TOMOYO_MAX_MAC_INDEX
933 + TOMOYO_MAX_MAC_CATEGORY_INDEX];
934 extern const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE];
935 extern const char * const tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION];
936 extern const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX];
937 extern const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION];
938 extern const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION];
939 extern const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION];
940 extern struct list_head tomoyo_condition_list;
941 extern struct list_head tomoyo_domain_list;
942 extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];
943 extern struct list_head tomoyo_namespace_list;
944 extern struct mutex tomoyo_policy_lock;
945 extern struct srcu_struct tomoyo_ss;
946 extern struct tomoyo_domain_info tomoyo_kernel_domain;
947 extern struct tomoyo_policy_namespace tomoyo_kernel_namespace;
948 extern unsigned int tomoyo_memory_quota[TOMOYO_MAX_MEMORY_STAT];
949 extern unsigned int tomoyo_memory_used[TOMOYO_MAX_MEMORY_STAT];
951 /********** Inlined functions. **********/
954 * tomoyo_read_lock - Take lock for protecting policy.
956 * Returns index number for tomoyo_read_unlock().
958 static inline int tomoyo_read_lock(void)
960 return srcu_read_lock(&tomoyo_ss);
964 * tomoyo_read_unlock - Release lock for protecting policy.
966 * @idx: Index number returned by tomoyo_read_lock().
970 static inline void tomoyo_read_unlock(int idx)
972 srcu_read_unlock(&tomoyo_ss, idx);
976 * tomoyo_sys_getppid - Copy of getppid().
978 * Returns parent process's PID.
980 * Alpha does not have getppid() defined. To be able to build this module on
981 * Alpha, I have to copy getppid() from kernel/timer.c.
983 static inline pid_t tomoyo_sys_getppid(void)
987 pid = task_tgid_vnr(current->real_parent);
993 * tomoyo_sys_getpid - Copy of getpid().
995 * Returns current thread's PID.
997 * Alpha does not have getpid() defined. To be able to build this module on
998 * Alpha, I have to copy getpid() from kernel/timer.c.
1000 static inline pid_t tomoyo_sys_getpid(void)
1002 return task_tgid_vnr(current);
1006 * tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure.
1008 * @a: Pointer to "struct tomoyo_path_info".
1009 * @b: Pointer to "struct tomoyo_path_info".
1011 * Returns true if @a == @b, false otherwise.
1013 static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a,
1014 const struct tomoyo_path_info *b)
1016 return a->hash != b->hash || strcmp(a->name, b->name);
1020 * tomoyo_put_name - Drop reference on "struct tomoyo_name".
1022 * @name: Pointer to "struct tomoyo_path_info". Maybe NULL.
1026 static inline void tomoyo_put_name(const struct tomoyo_path_info *name)
1029 struct tomoyo_name *ptr =
1030 container_of(name, typeof(*ptr), entry);
1031 atomic_dec(&ptr->head.users);
1036 * tomoyo_put_condition - Drop reference on "struct tomoyo_condition".
1038 * @cond: Pointer to "struct tomoyo_condition". Maybe NULL.
1042 static inline void tomoyo_put_condition(struct tomoyo_condition *cond)
1045 atomic_dec(&cond->head.users);
1049 * tomoyo_put_group - Drop reference on "struct tomoyo_group".
1051 * @group: Pointer to "struct tomoyo_group". Maybe NULL.
1055 static inline void tomoyo_put_group(struct tomoyo_group *group)
1058 atomic_dec(&group->head.users);
1062 * tomoyo_domain - Get "struct tomoyo_domain_info" for current thread.
1064 * Returns pointer to "struct tomoyo_domain_info" for current thread.
1066 static inline struct tomoyo_domain_info *tomoyo_domain(void)
1068 return current_cred()->security;
1072 * tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread.
1074 * @task: Pointer to "struct task_struct".
1076 * Returns pointer to "struct tomoyo_security" for specified thread.
1078 static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
1081 return task_cred_xxx(task, security);
1085 * tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry.
1087 * @a: Pointer to "struct tomoyo_name_union".
1088 * @b: Pointer to "struct tomoyo_name_union".
1090 * Returns true if @a == @b, false otherwise.
1092 static inline bool tomoyo_same_name_union
1093 (const struct tomoyo_name_union *a, const struct tomoyo_name_union *b)
1095 return a->filename == b->filename && a->group == b->group;
1099 * tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry.
1101 * @a: Pointer to "struct tomoyo_number_union".
1102 * @b: Pointer to "struct tomoyo_number_union".
1104 * Returns true if @a == @b, false otherwise.
1106 static inline bool tomoyo_same_number_union
1107 (const struct tomoyo_number_union *a, const struct tomoyo_number_union *b)
1109 return a->values[0] == b->values[0] && a->values[1] == b->values[1] &&
1110 a->group == b->group && a->value_type[0] == b->value_type[0] &&
1111 a->value_type[1] == b->value_type[1];
1115 * tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread.
1117 * Returns pointer to "struct tomoyo_policy_namespace" for current thread.
1119 static inline struct tomoyo_policy_namespace *tomoyo_current_namespace(void)
1121 return tomoyo_domain()->ns;
1124 #if defined(CONFIG_SLOB)
1127 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
1129 * @size: Size to be rounded up.
1133 * Since SLOB does not round up, this function simply returns @size.
1135 static inline int tomoyo_round2(size_t size)
1143 * tomoyo_round2 - Round up to power of 2 for calculating memory usage.
1145 * @size: Size to be rounded up.
1147 * Returns rounded size.
1149 * Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of
1152 static inline int tomoyo_round2(size_t size)
1154 #if PAGE_SIZE == 4096
1161 while (size > bsize)
1169 * list_for_each_cookie - iterate over a list with cookie.
1170 * @pos: the &struct list_head to use as a loop cursor.
1171 * @head: the head for your list.
1173 #define list_for_each_cookie(pos, head) \
1175 pos = srcu_dereference((head)->next, &tomoyo_ss); \
1176 for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss))
1178 #endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */