2
* security/tomoyo/common.h
4
* Header file for TOMOYO.
6
* Copyright (C) 2005-2011 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
/* Garbage collector is trying to kfree() this element. */
56
#define TOMOYO_GC_IN_PROGRESS -1
58
/* Profile number is an integer between 0 and 255. */
59
#define TOMOYO_MAX_PROFILES 256
61
/* Group number is an integer between 0 and 255. */
62
#define TOMOYO_MAX_ACL_GROUPS 256
64
/* Index numbers for "struct tomoyo_condition". */
65
enum tomoyo_conditions_index {
66
TOMOYO_TASK_UID, /* current_uid() */
67
TOMOYO_TASK_EUID, /* current_euid() */
68
TOMOYO_TASK_SUID, /* current_suid() */
69
TOMOYO_TASK_FSUID, /* current_fsuid() */
70
TOMOYO_TASK_GID, /* current_gid() */
71
TOMOYO_TASK_EGID, /* current_egid() */
72
TOMOYO_TASK_SGID, /* current_sgid() */
73
TOMOYO_TASK_FSGID, /* current_fsgid() */
74
TOMOYO_TASK_PID, /* sys_getpid() */
75
TOMOYO_TASK_PPID, /* sys_getppid() */
76
TOMOYO_EXEC_ARGC, /* "struct linux_binprm *"->argc */
77
TOMOYO_EXEC_ENVC, /* "struct linux_binprm *"->envc */
78
TOMOYO_TYPE_IS_SOCKET, /* S_IFSOCK */
79
TOMOYO_TYPE_IS_SYMLINK, /* S_IFLNK */
80
TOMOYO_TYPE_IS_FILE, /* S_IFREG */
81
TOMOYO_TYPE_IS_BLOCK_DEV, /* S_IFBLK */
82
TOMOYO_TYPE_IS_DIRECTORY, /* S_IFDIR */
83
TOMOYO_TYPE_IS_CHAR_DEV, /* S_IFCHR */
84
TOMOYO_TYPE_IS_FIFO, /* S_IFIFO */
85
TOMOYO_MODE_SETUID, /* S_ISUID */
86
TOMOYO_MODE_SETGID, /* S_ISGID */
87
TOMOYO_MODE_STICKY, /* S_ISVTX */
88
TOMOYO_MODE_OWNER_READ, /* S_IRUSR */
89
TOMOYO_MODE_OWNER_WRITE, /* S_IWUSR */
90
TOMOYO_MODE_OWNER_EXECUTE, /* S_IXUSR */
91
TOMOYO_MODE_GROUP_READ, /* S_IRGRP */
92
TOMOYO_MODE_GROUP_WRITE, /* S_IWGRP */
93
TOMOYO_MODE_GROUP_EXECUTE, /* S_IXGRP */
94
TOMOYO_MODE_OTHERS_READ, /* S_IROTH */
95
TOMOYO_MODE_OTHERS_WRITE, /* S_IWOTH */
96
TOMOYO_MODE_OTHERS_EXECUTE, /* S_IXOTH */
98
TOMOYO_SYMLINK_TARGET,
106
TOMOYO_PATH1_DEV_MAJOR,
107
TOMOYO_PATH1_DEV_MINOR,
115
TOMOYO_PATH2_DEV_MAJOR,
116
TOMOYO_PATH2_DEV_MINOR,
117
TOMOYO_PATH1_PARENT_UID,
118
TOMOYO_PATH1_PARENT_GID,
119
TOMOYO_PATH1_PARENT_INO,
120
TOMOYO_PATH1_PARENT_PERM,
121
TOMOYO_PATH2_PARENT_UID,
122
TOMOYO_PATH2_PARENT_GID,
123
TOMOYO_PATH2_PARENT_INO,
124
TOMOYO_PATH2_PARENT_PERM,
125
TOMOYO_MAX_CONDITION_KEYWORD,
133
/* Index numbers for stat(). */
134
enum tomoyo_path_stat_index {
135
/* Do not change this order. */
143
/* Index numbers for operation mode. */
144
enum tomoyo_mode_index {
145
TOMOYO_CONFIG_DISABLED,
146
TOMOYO_CONFIG_LEARNING,
147
TOMOYO_CONFIG_PERMISSIVE,
148
TOMOYO_CONFIG_ENFORCING,
149
TOMOYO_CONFIG_MAX_MODE,
150
TOMOYO_CONFIG_WANT_REJECT_LOG = 64,
151
TOMOYO_CONFIG_WANT_GRANT_LOG = 128,
152
TOMOYO_CONFIG_USE_DEFAULT = 255,
155
/* Index numbers for entry type. */
156
enum tomoyo_policy_id {
158
TOMOYO_ID_ADDRESS_GROUP,
159
TOMOYO_ID_PATH_GROUP,
160
TOMOYO_ID_NUMBER_GROUP,
161
TOMOYO_ID_TRANSITION_CONTROL,
162
TOMOYO_ID_AGGREGATOR,
171
/* Index numbers for domain's attributes. */
172
enum tomoyo_domain_info_flags_index {
173
/* Quota warnning flag. */
174
TOMOYO_DIF_QUOTA_WARNED,
176
* This domain was unable to create a new domain at
177
* tomoyo_find_next_domain() because the name of the domain to be
178
* created was too long or it could not allocate memory.
179
* More than one process continued execve() without domain transition.
181
TOMOYO_DIF_TRANSITION_FAILED,
182
TOMOYO_MAX_DOMAIN_INFO_FLAGS
185
/* Index numbers for audit type. */
186
enum tomoyo_grant_log {
187
/* Follow profile's configuration. */
188
TOMOYO_GRANTLOG_AUTO,
189
/* Do not generate grant log. */
191
/* Generate grant_log. */
195
/* Index numbers for group entries. */
196
enum tomoyo_group_id {
199
TOMOYO_ADDRESS_GROUP,
203
/* Index numbers for type of numeric values. */
204
enum tomoyo_value_type {
205
TOMOYO_VALUE_TYPE_INVALID,
206
TOMOYO_VALUE_TYPE_DECIMAL,
207
TOMOYO_VALUE_TYPE_OCTAL,
208
TOMOYO_VALUE_TYPE_HEXADECIMAL,
211
/* Index numbers for domain transition control keywords. */
212
enum tomoyo_transition_type {
213
/* Do not change this order, */
214
TOMOYO_TRANSITION_CONTROL_NO_RESET,
215
TOMOYO_TRANSITION_CONTROL_RESET,
216
TOMOYO_TRANSITION_CONTROL_NO_INITIALIZE,
217
TOMOYO_TRANSITION_CONTROL_INITIALIZE,
218
TOMOYO_TRANSITION_CONTROL_NO_KEEP,
219
TOMOYO_TRANSITION_CONTROL_KEEP,
220
TOMOYO_MAX_TRANSITION_TYPE
223
/* Index numbers for Access Controls. */
224
enum tomoyo_acl_entry_type_index {
225
TOMOYO_TYPE_PATH_ACL,
226
TOMOYO_TYPE_PATH2_ACL,
227
TOMOYO_TYPE_PATH_NUMBER_ACL,
228
TOMOYO_TYPE_MKDEV_ACL,
229
TOMOYO_TYPE_MOUNT_ACL,
230
TOMOYO_TYPE_INET_ACL,
231
TOMOYO_TYPE_UNIX_ACL,
233
TOMOYO_TYPE_MANUAL_TASK_ACL,
236
/* Index numbers for access controls with one pathname. */
237
enum tomoyo_path_acl_index {
245
TOMOYO_TYPE_TRUNCATE,
249
TOMOYO_MAX_PATH_OPERATION
252
/* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
253
enum tomoyo_memory_stat_type {
254
TOMOYO_MEMORY_POLICY,
257
TOMOYO_MAX_MEMORY_STAT
260
enum tomoyo_mkdev_acl_index {
263
TOMOYO_MAX_MKDEV_OPERATION
266
/* Index numbers for socket operations. */
267
enum tomoyo_network_acl_index {
268
TOMOYO_NETWORK_BIND, /* bind() operation. */
269
TOMOYO_NETWORK_LISTEN, /* listen() operation. */
270
TOMOYO_NETWORK_CONNECT, /* connect() operation. */
271
TOMOYO_NETWORK_SEND, /* send() operation. */
272
TOMOYO_MAX_NETWORK_OPERATION
275
/* Index numbers for access controls with two pathnames. */
276
enum tomoyo_path2_acl_index {
279
TOMOYO_TYPE_PIVOT_ROOT,
280
TOMOYO_MAX_PATH2_OPERATION
283
/* Index numbers for access controls with one pathname and one number. */
284
enum tomoyo_path_number_acl_index {
293
TOMOYO_MAX_PATH_NUMBER_OPERATION
296
/* Index numbers for /sys/kernel/security/tomoyo/ interfaces. */
297
enum tomoyo_securityfs_interface_index {
299
TOMOYO_EXCEPTIONPOLICY,
300
TOMOYO_PROCESS_STATUS,
309
/* Index numbers for special mount operations. */
310
enum tomoyo_special_mount {
311
TOMOYO_MOUNT_BIND, /* mount --bind /source /dest */
312
TOMOYO_MOUNT_MOVE, /* mount --move /old /new */
313
TOMOYO_MOUNT_REMOUNT, /* mount -o remount /dir */
314
TOMOYO_MOUNT_MAKE_UNBINDABLE, /* mount --make-unbindable /dir */
315
TOMOYO_MOUNT_MAKE_PRIVATE, /* mount --make-private /dir */
316
TOMOYO_MOUNT_MAKE_SLAVE, /* mount --make-slave /dir */
317
TOMOYO_MOUNT_MAKE_SHARED, /* mount --make-shared /dir */
318
TOMOYO_MAX_SPECIAL_MOUNT
321
/* Index numbers for functionality. */
322
enum tomoyo_mac_index {
323
TOMOYO_MAC_FILE_EXECUTE,
324
TOMOYO_MAC_FILE_OPEN,
325
TOMOYO_MAC_FILE_CREATE,
326
TOMOYO_MAC_FILE_UNLINK,
327
TOMOYO_MAC_FILE_GETATTR,
328
TOMOYO_MAC_FILE_MKDIR,
329
TOMOYO_MAC_FILE_RMDIR,
330
TOMOYO_MAC_FILE_MKFIFO,
331
TOMOYO_MAC_FILE_MKSOCK,
332
TOMOYO_MAC_FILE_TRUNCATE,
333
TOMOYO_MAC_FILE_SYMLINK,
334
TOMOYO_MAC_FILE_MKBLOCK,
335
TOMOYO_MAC_FILE_MKCHAR,
336
TOMOYO_MAC_FILE_LINK,
337
TOMOYO_MAC_FILE_RENAME,
338
TOMOYO_MAC_FILE_CHMOD,
339
TOMOYO_MAC_FILE_CHOWN,
340
TOMOYO_MAC_FILE_CHGRP,
341
TOMOYO_MAC_FILE_IOCTL,
342
TOMOYO_MAC_FILE_CHROOT,
343
TOMOYO_MAC_FILE_MOUNT,
344
TOMOYO_MAC_FILE_UMOUNT,
345
TOMOYO_MAC_FILE_PIVOT_ROOT,
346
TOMOYO_MAC_NETWORK_INET_STREAM_BIND,
347
TOMOYO_MAC_NETWORK_INET_STREAM_LISTEN,
348
TOMOYO_MAC_NETWORK_INET_STREAM_CONNECT,
349
TOMOYO_MAC_NETWORK_INET_DGRAM_BIND,
350
TOMOYO_MAC_NETWORK_INET_DGRAM_SEND,
351
TOMOYO_MAC_NETWORK_INET_RAW_BIND,
352
TOMOYO_MAC_NETWORK_INET_RAW_SEND,
353
TOMOYO_MAC_NETWORK_UNIX_STREAM_BIND,
354
TOMOYO_MAC_NETWORK_UNIX_STREAM_LISTEN,
355
TOMOYO_MAC_NETWORK_UNIX_STREAM_CONNECT,
356
TOMOYO_MAC_NETWORK_UNIX_DGRAM_BIND,
357
TOMOYO_MAC_NETWORK_UNIX_DGRAM_SEND,
358
TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_BIND,
359
TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_LISTEN,
360
TOMOYO_MAC_NETWORK_UNIX_SEQPACKET_CONNECT,
365
/* Index numbers for category of functionality. */
366
enum tomoyo_mac_category_index {
367
TOMOYO_MAC_CATEGORY_FILE,
368
TOMOYO_MAC_CATEGORY_NETWORK,
369
TOMOYO_MAC_CATEGORY_MISC,
370
TOMOYO_MAX_MAC_CATEGORY_INDEX
374
* Retry this request. Returned by tomoyo_supervisor() if policy violation has
375
* occurred in enforcing mode and the userspace daemon decided to retry.
377
* We must choose a positive value in order to distinguish "granted" (which is
378
* 0) and "rejected" (which is a negative value) and "retry".
380
#define TOMOYO_RETRY_REQUEST 1
382
/* Index numbers for /sys/kernel/security/tomoyo/stat interface. */
383
enum tomoyo_policy_stat_type {
384
/* Do not change this order. */
385
TOMOYO_STAT_POLICY_UPDATES,
386
TOMOYO_STAT_POLICY_LEARNING, /* == TOMOYO_CONFIG_LEARNING */
387
TOMOYO_STAT_POLICY_PERMISSIVE, /* == TOMOYO_CONFIG_PERMISSIVE */
388
TOMOYO_STAT_POLICY_ENFORCING, /* == TOMOYO_CONFIG_ENFORCING */
389
TOMOYO_MAX_POLICY_STAT
392
/* Index numbers for profile's PREFERENCE values. */
393
enum tomoyo_pref_index {
394
TOMOYO_PREF_MAX_AUDIT_LOG,
395
TOMOYO_PREF_MAX_LEARNING_ENTRY,
399
/********** Structure definitions. **********/
401
/* Common header for holding ACL entries. */
402
struct tomoyo_acl_head {
403
struct list_head list;
404
s8 is_deleted; /* true or false or TOMOYO_GC_IN_PROGRESS */
407
/* Common header for shared entries. */
408
struct tomoyo_shared_acl_head {
409
struct list_head list;
413
struct tomoyo_policy_namespace;
415
/* Structure for request info. */
416
struct tomoyo_request_info {
418
* For holding parameters specific to operations which deal files.
419
* NULL if not dealing files.
421
struct tomoyo_obj_info *obj;
423
* For holding parameters specific to execve() request.
424
* NULL if not dealing do_execve().
426
struct tomoyo_execve *ee;
427
struct tomoyo_domain_info *domain;
428
/* For holding parameters. */
431
const struct tomoyo_path_info *filename;
432
/* For using wildcards at tomoyo_find_next_domain(). */
433
const struct tomoyo_path_info *matched_path;
434
/* One of values in "enum tomoyo_path_acl_index". */
438
const struct tomoyo_path_info *filename1;
439
const struct tomoyo_path_info *filename2;
440
/* One of values in "enum tomoyo_path2_acl_index". */
444
const struct tomoyo_path_info *filename;
448
/* One of values in "enum tomoyo_mkdev_acl_index". */
452
const struct tomoyo_path_info *filename;
453
unsigned long number;
456
* "enum tomoyo_path_number_acl_index".
461
const struct tomoyo_path_info *name;
464
const __be32 *address;
466
/* One of values smaller than TOMOYO_SOCK_MAX. */
468
/* One of values in "enum tomoyo_network_acl_index". */
473
const struct tomoyo_path_info *address;
474
/* One of values smaller than TOMOYO_SOCK_MAX. */
476
/* One of values in "enum tomoyo_network_acl_index". */
480
const struct tomoyo_path_info *type;
481
const struct tomoyo_path_info *dir;
482
const struct tomoyo_path_info *dev;
487
const struct tomoyo_path_info *domainname;
490
struct tomoyo_acl_info *matched_acl;
495
u8 mode; /* One of tomoyo_mode_index . */
499
/* Structure for holding a token. */
500
struct tomoyo_path_info {
502
u32 hash; /* = full_name_hash(name, strlen(name)) */
503
u16 const_len; /* = tomoyo_const_part_length(name) */
504
bool is_dir; /* = tomoyo_strendswith(name, "/") */
505
bool is_patterned; /* = tomoyo_path_contains_pattern(name) */
508
/* Structure for holding string data. */
510
struct tomoyo_shared_acl_head head;
511
struct tomoyo_path_info entry;
514
/* Structure for holding a word. */
515
struct tomoyo_name_union {
516
/* Either @filename or @group is NULL. */
517
const struct tomoyo_path_info *filename;
518
struct tomoyo_group *group;
521
/* Structure for holding a number. */
522
struct tomoyo_number_union {
523
unsigned long values[2];
524
struct tomoyo_group *group; /* Maybe NULL. */
525
/* One of values in "enum tomoyo_value_type". */
529
/* Structure for holding an IP address. */
530
struct tomoyo_ipaddr_union {
531
struct in6_addr ip[2]; /* Big endian. */
532
struct tomoyo_group *group; /* Pointer to address group. */
533
bool is_ipv6; /* Valid only if @group == NULL. */
536
/* Structure for "path_group"/"number_group"/"address_group" directive. */
537
struct tomoyo_group {
538
struct tomoyo_shared_acl_head head;
539
const struct tomoyo_path_info *group_name;
540
struct list_head member_list;
543
/* Structure for "path_group" directive. */
544
struct tomoyo_path_group {
545
struct tomoyo_acl_head head;
546
const struct tomoyo_path_info *member_name;
549
/* Structure for "number_group" directive. */
550
struct tomoyo_number_group {
551
struct tomoyo_acl_head head;
552
struct tomoyo_number_union number;
555
/* Structure for "address_group" directive. */
556
struct tomoyo_address_group {
557
struct tomoyo_acl_head head;
558
/* Structure for holding an IP address. */
559
struct tomoyo_ipaddr_union address;
562
/* Subset of "struct stat". Used by conditional ACL and audit logs. */
563
struct tomoyo_mini_stat {
572
/* Structure for dumping argv[] and envp[] of "struct linux_binprm". */
573
struct tomoyo_page_dump {
574
struct page *page; /* Previously dumped page. */
575
char *data; /* Contents of "page". Size is PAGE_SIZE. */
578
/* Structure for attribute checks in addition to pathname checks. */
579
struct tomoyo_obj_info {
581
* True if tomoyo_get_attributes() was already called, false otherwise.
584
/* True if @stat[] is valid. */
585
bool stat_valid[TOMOYO_MAX_PATH_STAT];
586
/* First pathname. Initialized with { NULL, NULL } if no path. */
588
/* Second pathname. Initialized with { NULL, NULL } if no path. */
591
* Information on @path1, @path1's parent directory, @path2, @path2's
594
struct tomoyo_mini_stat stat[TOMOYO_MAX_PATH_STAT];
596
* Content of symbolic link to be created. NULL for operations other
599
struct tomoyo_path_info *symlink_target;
602
/* Structure for argv[]. */
605
const struct tomoyo_path_info *value;
609
/* Structure for envp[]. */
611
const struct tomoyo_path_info *name;
612
const struct tomoyo_path_info *value;
616
/* Structure for execve() operation. */
617
struct tomoyo_execve {
618
struct tomoyo_request_info r;
619
struct tomoyo_obj_info obj;
620
struct linux_binprm *bprm;
621
const struct tomoyo_path_info *transition;
622
/* For dumping argv[] and envp[]. */
623
struct tomoyo_page_dump dump;
624
/* For temporary use. */
625
char *tmp; /* Size is TOMOYO_EXEC_TMPSIZE bytes */
628
/* Structure for entries which follows "struct tomoyo_condition". */
629
struct tomoyo_condition_element {
631
* Left hand operand. A "struct tomoyo_argv" for TOMOYO_ARGV_ENTRY, a
632
* "struct tomoyo_envp" for TOMOYO_ENVP_ENTRY is attached to the tail
633
* of the array of this struct.
637
* Right hand operand. A "struct tomoyo_number_union" for
638
* TOMOYO_NUMBER_UNION, a "struct tomoyo_name_union" for
639
* TOMOYO_NAME_UNION is attached to the tail of the array of this
643
/* Equation operator. True if equals or overlaps, false otherwise. */
647
/* Structure for optional arguments. */
648
struct tomoyo_condition {
649
struct tomoyo_shared_acl_head head;
650
u32 size; /* Memory size allocated for this entry. */
651
u16 condc; /* Number of conditions in this struct. */
652
u16 numbers_count; /* Number of "struct tomoyo_number_union values". */
653
u16 names_count; /* Number of "struct tomoyo_name_union names". */
654
u16 argc; /* Number of "struct tomoyo_argv". */
655
u16 envc; /* Number of "struct tomoyo_envp". */
656
u8 grant_log; /* One of values in "enum tomoyo_grant_log". */
657
const struct tomoyo_path_info *transit; /* Maybe NULL. */
659
* struct tomoyo_condition_element condition[condc];
660
* struct tomoyo_number_union values[numbers_count];
661
* struct tomoyo_name_union names[names_count];
662
* struct tomoyo_argv argv[argc];
663
* struct tomoyo_envp envp[envc];
667
/* Common header for individual entries. */
668
struct tomoyo_acl_info {
669
struct list_head list;
670
struct tomoyo_condition *cond; /* Maybe NULL. */
671
s8 is_deleted; /* true or false or TOMOYO_GC_IN_PROGRESS */
672
u8 type; /* One of values in "enum tomoyo_acl_entry_type_index". */
675
/* Structure for domain information. */
676
struct tomoyo_domain_info {
677
struct list_head list;
678
struct list_head acl_info_list;
679
/* Name of this domain. Never NULL. */
680
const struct tomoyo_path_info *domainname;
681
/* Namespace for this domain. Never NULL. */
682
struct tomoyo_policy_namespace *ns;
683
u8 profile; /* Profile number to use. */
684
u8 group; /* Group number to use. */
685
bool is_deleted; /* Delete flag. */
686
bool flags[TOMOYO_MAX_DOMAIN_INFO_FLAGS];
687
atomic_t users; /* Number of referring credentials. */
691
* Structure for "task manual_domain_transition" directive.
693
struct tomoyo_task_acl {
694
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MANUAL_TASK_ACL */
695
/* Pointer to domainname. */
696
const struct tomoyo_path_info *domainname;
700
* Structure for "file execute", "file read", "file write", "file append",
701
* "file unlink", "file getattr", "file rmdir", "file truncate",
702
* "file symlink", "file chroot" and "file unmount" directive.
704
struct tomoyo_path_acl {
705
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_ACL */
706
u16 perm; /* Bitmask of values in "enum tomoyo_path_acl_index". */
707
struct tomoyo_name_union name;
711
* Structure for "file create", "file mkdir", "file mkfifo", "file mksock",
712
* "file ioctl", "file chmod", "file chown" and "file chgrp" directive.
714
struct tomoyo_path_number_acl {
715
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH_NUMBER_ACL */
716
/* Bitmask of values in "enum tomoyo_path_number_acl_index". */
718
struct tomoyo_name_union name;
719
struct tomoyo_number_union number;
722
/* Structure for "file mkblock" and "file mkchar" directive. */
723
struct tomoyo_mkdev_acl {
724
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MKDEV_ACL */
725
u8 perm; /* Bitmask of values in "enum tomoyo_mkdev_acl_index". */
726
struct tomoyo_name_union name;
727
struct tomoyo_number_union mode;
728
struct tomoyo_number_union major;
729
struct tomoyo_number_union minor;
733
* Structure for "file rename", "file link" and "file pivot_root" directive.
735
struct tomoyo_path2_acl {
736
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_PATH2_ACL */
737
u8 perm; /* Bitmask of values in "enum tomoyo_path2_acl_index". */
738
struct tomoyo_name_union name1;
739
struct tomoyo_name_union name2;
742
/* Structure for "file mount" directive. */
743
struct tomoyo_mount_acl {
744
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_MOUNT_ACL */
745
struct tomoyo_name_union dev_name;
746
struct tomoyo_name_union dir_name;
747
struct tomoyo_name_union fs_type;
748
struct tomoyo_number_union flags;
751
/* Structure for "misc env" directive in domain policy. */
752
struct tomoyo_env_acl {
753
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_ENV_ACL */
754
const struct tomoyo_path_info *env; /* environment variable */
757
/* Structure for "network inet" directive. */
758
struct tomoyo_inet_acl {
759
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_INET_ACL */
761
u8 perm; /* Bitmask of values in "enum tomoyo_network_acl_index" */
762
struct tomoyo_ipaddr_union address;
763
struct tomoyo_number_union port;
766
/* Structure for "network unix" directive. */
767
struct tomoyo_unix_acl {
768
struct tomoyo_acl_info head; /* type = TOMOYO_TYPE_UNIX_ACL */
770
u8 perm; /* Bitmask of values in "enum tomoyo_network_acl_index" */
771
struct tomoyo_name_union name;
774
/* Structure for holding a line from /sys/kernel/security/tomoyo/ interface. */
775
struct tomoyo_acl_param {
777
struct list_head *list;
778
struct tomoyo_policy_namespace *ns;
782
#define TOMOYO_MAX_IO_READ_QUEUE 64
785
* Structure for reading/writing policy via /sys/kernel/security/tomoyo
788
struct tomoyo_io_buffer {
789
void (*read) (struct tomoyo_io_buffer *);
790
int (*write) (struct tomoyo_io_buffer *);
791
int (*poll) (struct file *file, poll_table *wait);
792
/* Exclusive lock for this structure. */
794
char __user *read_user_buf;
795
size_t read_user_buf_avail;
797
struct list_head *ns;
798
struct list_head *domain;
799
struct list_head *group;
800
struct list_head *acl;
803
unsigned int query_index;
811
bool print_this_domain_only;
812
bool print_transition_related_only;
813
bool print_cond_part;
814
const char *w[TOMOYO_MAX_IO_READ_QUEUE];
817
struct tomoyo_policy_namespace *ns;
818
/* The position currently writing to. */
819
struct tomoyo_domain_info *domain;
820
/* Bytes available for writing. */
824
/* Buffer for reading. */
826
/* Size of read buffer. */
828
/* Buffer for writing. */
830
/* Size of write buffer. */
831
size_t writebuf_size;
832
/* Type of this interface. */
833
enum tomoyo_securityfs_interface_index type;
834
/* Users counter protected by tomoyo_io_buffer_list_lock. */
836
/* List for telling GC not to kfree() elements. */
837
struct list_head list;
841
* Structure for "initialize_domain"/"no_initialize_domain"/"keep_domain"/
842
* "no_keep_domain" keyword.
844
struct tomoyo_transition_control {
845
struct tomoyo_acl_head head;
846
u8 type; /* One of values in "enum tomoyo_transition_type". */
847
/* True if the domainname is tomoyo_get_last_name(). */
849
const struct tomoyo_path_info *domainname; /* Maybe NULL */
850
const struct tomoyo_path_info *program; /* Maybe NULL */
853
/* Structure for "aggregator" keyword. */
854
struct tomoyo_aggregator {
855
struct tomoyo_acl_head head;
856
const struct tomoyo_path_info *original_name;
857
const struct tomoyo_path_info *aggregated_name;
860
/* Structure for policy manager. */
861
struct tomoyo_manager {
862
struct tomoyo_acl_head head;
863
bool is_domain; /* True if manager is a domainname. */
864
/* A path to program or a domainname. */
865
const struct tomoyo_path_info *manager;
868
struct tomoyo_preference {
869
unsigned int learning_max_entry;
870
bool enforcing_verbose;
871
bool learning_verbose;
872
bool permissive_verbose;
875
/* Structure for /sys/kernel/security/tomnoyo/profile interface. */
876
struct tomoyo_profile {
877
const struct tomoyo_path_info *comment;
878
struct tomoyo_preference *learning;
879
struct tomoyo_preference *permissive;
880
struct tomoyo_preference *enforcing;
881
struct tomoyo_preference preference;
883
u8 config[TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX];
884
unsigned int pref[TOMOYO_MAX_PREF];
887
/* Structure for representing YYYY/MM/DD hh/mm/ss. */
897
/* Structure for policy namespace. */
898
struct tomoyo_policy_namespace {
899
/* Profile table. Memory is allocated as needed. */
900
struct tomoyo_profile *profile_ptr[TOMOYO_MAX_PROFILES];
901
/* List of "struct tomoyo_group". */
902
struct list_head group_list[TOMOYO_MAX_GROUP];
903
/* List of policy. */
904
struct list_head policy_list[TOMOYO_MAX_POLICY];
905
/* The global ACL referred by "use_group" keyword. */
906
struct list_head acl_group[TOMOYO_MAX_ACL_GROUPS];
907
/* List for connecting to tomoyo_namespace_list list. */
908
struct list_head namespace_list;
909
/* Profile version. Currently only 20110903 is defined. */
910
unsigned int profile_version;
911
/* Name of this namespace (e.g. "<kernel>", "</usr/sbin/httpd>" ). */
915
/********** Function prototypes. **********/
917
bool tomoyo_address_matches_group(const bool is_ipv6, const __be32 *address,
918
const struct tomoyo_group *group);
919
bool tomoyo_compare_number_union(const unsigned long value,
920
const struct tomoyo_number_union *ptr);
921
bool tomoyo_condition(struct tomoyo_request_info *r,
922
const struct tomoyo_condition *cond);
923
bool tomoyo_correct_domain(const unsigned char *domainname);
924
bool tomoyo_correct_path(const char *filename);
925
bool tomoyo_correct_word(const char *string);
926
bool tomoyo_domain_def(const unsigned char *buffer);
927
bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r);
928
bool tomoyo_dump_page(struct linux_binprm *bprm, unsigned long pos,
929
struct tomoyo_page_dump *dump);
930
bool tomoyo_memory_ok(void *ptr);
931
bool tomoyo_number_matches_group(const unsigned long min,
932
const unsigned long max,
933
const struct tomoyo_group *group);
934
bool tomoyo_parse_ipaddr_union(struct tomoyo_acl_param *param,
935
struct tomoyo_ipaddr_union *ptr);
936
bool tomoyo_parse_name_union(struct tomoyo_acl_param *param,
937
struct tomoyo_name_union *ptr);
938
bool tomoyo_parse_number_union(struct tomoyo_acl_param *param,
939
struct tomoyo_number_union *ptr);
940
bool tomoyo_path_matches_pattern(const struct tomoyo_path_info *filename,
941
const struct tomoyo_path_info *pattern);
942
bool tomoyo_permstr(const char *string, const char *keyword);
943
bool tomoyo_str_starts(char **src, const char *find);
944
char *tomoyo_encode(const char *str);
945
char *tomoyo_encode2(const char *str, int str_len);
946
char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
948
char *tomoyo_read_token(struct tomoyo_acl_param *param);
949
char *tomoyo_realpath_from_path(struct path *path);
950
char *tomoyo_realpath_nofollow(const char *pathname);
951
const char *tomoyo_get_exe(void);
952
const char *tomoyo_yesno(const unsigned int value);
953
const struct tomoyo_path_info *tomoyo_compare_name_union
954
(const struct tomoyo_path_info *name, const struct tomoyo_name_union *ptr);
955
const struct tomoyo_path_info *tomoyo_get_domainname
956
(struct tomoyo_acl_param *param);
957
const struct tomoyo_path_info *tomoyo_get_name(const char *name);
958
const struct tomoyo_path_info *tomoyo_path_matches_group
959
(const struct tomoyo_path_info *pathname, const struct tomoyo_group *group);
960
int tomoyo_check_open_permission(struct tomoyo_domain_info *domain,
961
struct path *path, const int flag);
962
int tomoyo_close_control(struct tomoyo_io_buffer *head);
963
int tomoyo_env_perm(struct tomoyo_request_info *r, const char *env);
964
int tomoyo_execute_permission(struct tomoyo_request_info *r,
965
const struct tomoyo_path_info *filename);
966
int tomoyo_find_next_domain(struct linux_binprm *bprm);
967
int tomoyo_get_mode(const struct tomoyo_policy_namespace *ns, const u8 profile,
969
int tomoyo_init_request_info(struct tomoyo_request_info *r,
970
struct tomoyo_domain_info *domain,
972
int tomoyo_mkdev_perm(const u8 operation, struct path *path,
973
const unsigned int mode, unsigned int dev);
974
int tomoyo_mount_permission(char *dev_name, struct path *path,
975
const char *type, unsigned long flags,
977
int tomoyo_open_control(const u8 type, struct file *file);
978
int tomoyo_path2_perm(const u8 operation, struct path *path1,
980
int tomoyo_path_number_perm(const u8 operation, struct path *path,
981
unsigned long number);
982
int tomoyo_path_perm(const u8 operation, struct path *path,
984
int tomoyo_poll_control(struct file *file, poll_table *wait);
985
int tomoyo_poll_log(struct file *file, poll_table *wait);
986
int tomoyo_socket_bind_permission(struct socket *sock, struct sockaddr *addr,
988
int tomoyo_socket_connect_permission(struct socket *sock,
989
struct sockaddr *addr, int addr_len);
990
int tomoyo_socket_listen_permission(struct socket *sock);
991
int tomoyo_socket_sendmsg_permission(struct socket *sock, struct msghdr *msg,
993
int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
995
int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size,
996
struct tomoyo_acl_param *param,
997
bool (*check_duplicate)
998
(const struct tomoyo_acl_info *,
999
const struct tomoyo_acl_info *),
1000
bool (*merge_duplicate)
1001
(struct tomoyo_acl_info *, struct tomoyo_acl_info *,
1003
int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size,
1004
struct tomoyo_acl_param *param,
1005
bool (*check_duplicate)
1006
(const struct tomoyo_acl_head *,
1007
const struct tomoyo_acl_head *));
1008
int tomoyo_write_aggregator(struct tomoyo_acl_param *param);
1009
int tomoyo_write_file(struct tomoyo_acl_param *param);
1010
int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type);
1011
int tomoyo_write_misc(struct tomoyo_acl_param *param);
1012
int tomoyo_write_inet_network(struct tomoyo_acl_param *param);
1013
int tomoyo_write_transition_control(struct tomoyo_acl_param *param,
1015
int tomoyo_write_unix_network(struct tomoyo_acl_param *param);
1016
ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer,
1017
const int buffer_len);
1018
ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head,
1019
const char __user *buffer, const int buffer_len);
1020
struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param);
1021
struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
1022
const bool transit);
1023
struct tomoyo_domain_info *tomoyo_find_domain(const char *domainname);
1024
struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param,
1026
struct tomoyo_policy_namespace *tomoyo_assign_namespace
1027
(const char *domainname);
1028
struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns,
1030
unsigned int tomoyo_check_flags(const struct tomoyo_domain_info *domain,
1032
u8 tomoyo_parse_ulong(unsigned long *result, char **str);
1033
void *tomoyo_commit_ok(void *data, const unsigned int size);
1034
void __init tomoyo_load_builtin_policy(void);
1035
void __init tomoyo_mm_init(void);
1036
void tomoyo_check_acl(struct tomoyo_request_info *r,
1037
bool (*check_entry) (struct tomoyo_request_info *,
1038
const struct tomoyo_acl_info *));
1039
void tomoyo_check_profile(void);
1040
void tomoyo_convert_time(time_t time, struct tomoyo_time *stamp);
1041
void tomoyo_del_condition(struct list_head *element);
1042
void tomoyo_fill_path_info(struct tomoyo_path_info *ptr);
1043
void tomoyo_get_attributes(struct tomoyo_obj_info *obj);
1044
void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns);
1045
void tomoyo_load_policy(const char *filename);
1046
void tomoyo_normalize_line(unsigned char *buffer);
1047
void tomoyo_notify_gc(struct tomoyo_io_buffer *head, const bool is_register);
1048
void tomoyo_print_ip(char *buf, const unsigned int size,
1049
const struct tomoyo_ipaddr_union *ptr);
1050
void tomoyo_print_ulong(char *buffer, const int buffer_len,
1051
const unsigned long value, const u8 type);
1052
void tomoyo_put_name_union(struct tomoyo_name_union *ptr);
1053
void tomoyo_put_number_union(struct tomoyo_number_union *ptr);
1054
void tomoyo_read_log(struct tomoyo_io_buffer *head);
1055
void tomoyo_update_stat(const u8 index);
1056
void tomoyo_warn_oom(const char *function);
1057
void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...)
1059
void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt,
1062
/********** External variable definitions. **********/
1064
extern bool tomoyo_policy_loaded;
1065
extern const char * const tomoyo_condition_keyword
1066
[TOMOYO_MAX_CONDITION_KEYWORD];
1067
extern const char * const tomoyo_dif[TOMOYO_MAX_DOMAIN_INFO_FLAGS];
1068
extern const char * const tomoyo_mac_keywords[TOMOYO_MAX_MAC_INDEX
1069
+ TOMOYO_MAX_MAC_CATEGORY_INDEX];
1070
extern const char * const tomoyo_mode[TOMOYO_CONFIG_MAX_MODE];
1071
extern const char * const tomoyo_path_keyword[TOMOYO_MAX_PATH_OPERATION];
1072
extern const char * const tomoyo_proto_keyword[TOMOYO_SOCK_MAX];
1073
extern const char * const tomoyo_socket_keyword[TOMOYO_MAX_NETWORK_OPERATION];
1074
extern const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX];
1075
extern const u8 tomoyo_pn2mac[TOMOYO_MAX_PATH_NUMBER_OPERATION];
1076
extern const u8 tomoyo_pnnn2mac[TOMOYO_MAX_MKDEV_OPERATION];
1077
extern const u8 tomoyo_pp2mac[TOMOYO_MAX_PATH2_OPERATION];
1078
extern struct list_head tomoyo_condition_list;
1079
extern struct list_head tomoyo_domain_list;
1080
extern struct list_head tomoyo_name_list[TOMOYO_MAX_HASH];
1081
extern struct list_head tomoyo_namespace_list;
1082
extern struct mutex tomoyo_policy_lock;
1083
extern struct srcu_struct tomoyo_ss;
1084
extern struct tomoyo_domain_info tomoyo_kernel_domain;
1085
extern struct tomoyo_policy_namespace tomoyo_kernel_namespace;
1086
extern unsigned int tomoyo_memory_quota[TOMOYO_MAX_MEMORY_STAT];
1087
extern unsigned int tomoyo_memory_used[TOMOYO_MAX_MEMORY_STAT];
1089
/********** Inlined functions. **********/
1092
* tomoyo_read_lock - Take lock for protecting policy.
1094
* Returns index number for tomoyo_read_unlock().
1096
static inline int tomoyo_read_lock(void)
1098
return srcu_read_lock(&tomoyo_ss);
1102
* tomoyo_read_unlock - Release lock for protecting policy.
1104
* @idx: Index number returned by tomoyo_read_lock().
1108
static inline void tomoyo_read_unlock(int idx)
1110
srcu_read_unlock(&tomoyo_ss, idx);
1114
* tomoyo_sys_getppid - Copy of getppid().
1116
* Returns parent process's PID.
1118
* Alpha does not have getppid() defined. To be able to build this module on
1119
* Alpha, I have to copy getppid() from kernel/timer.c.
1121
static inline pid_t tomoyo_sys_getppid(void)
1125
pid = task_tgid_vnr(current->real_parent);
1131
* tomoyo_sys_getpid - Copy of getpid().
1133
* Returns current thread's PID.
1135
* Alpha does not have getpid() defined. To be able to build this module on
1136
* Alpha, I have to copy getpid() from kernel/timer.c.
1138
static inline pid_t tomoyo_sys_getpid(void)
1140
return task_tgid_vnr(current);
1144
* tomoyo_pathcmp - strcmp() for "struct tomoyo_path_info" structure.
1146
* @a: Pointer to "struct tomoyo_path_info".
1147
* @b: Pointer to "struct tomoyo_path_info".
1149
* Returns true if @a == @b, false otherwise.
1151
static inline bool tomoyo_pathcmp(const struct tomoyo_path_info *a,
1152
const struct tomoyo_path_info *b)
1154
return a->hash != b->hash || strcmp(a->name, b->name);
1158
* tomoyo_put_name - Drop reference on "struct tomoyo_name".
1160
* @name: Pointer to "struct tomoyo_path_info". Maybe NULL.
1164
static inline void tomoyo_put_name(const struct tomoyo_path_info *name)
1167
struct tomoyo_name *ptr =
1168
container_of(name, typeof(*ptr), entry);
1169
atomic_dec(&ptr->head.users);
1174
* tomoyo_put_condition - Drop reference on "struct tomoyo_condition".
1176
* @cond: Pointer to "struct tomoyo_condition". Maybe NULL.
1180
static inline void tomoyo_put_condition(struct tomoyo_condition *cond)
1183
atomic_dec(&cond->head.users);
1187
* tomoyo_put_group - Drop reference on "struct tomoyo_group".
1189
* @group: Pointer to "struct tomoyo_group". Maybe NULL.
1193
static inline void tomoyo_put_group(struct tomoyo_group *group)
1196
atomic_dec(&group->head.users);
1200
* tomoyo_domain - Get "struct tomoyo_domain_info" for current thread.
1202
* Returns pointer to "struct tomoyo_domain_info" for current thread.
1204
static inline struct tomoyo_domain_info *tomoyo_domain(void)
1206
return current_cred()->security;
1210
* tomoyo_real_domain - Get "struct tomoyo_domain_info" for specified thread.
1212
* @task: Pointer to "struct task_struct".
1214
* Returns pointer to "struct tomoyo_security" for specified thread.
1216
static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
1219
return task_cred_xxx(task, security);
1223
* tomoyo_same_name_union - Check for duplicated "struct tomoyo_name_union" entry.
1225
* @a: Pointer to "struct tomoyo_name_union".
1226
* @b: Pointer to "struct tomoyo_name_union".
1228
* Returns true if @a == @b, false otherwise.
1230
static inline bool tomoyo_same_name_union
1231
(const struct tomoyo_name_union *a, const struct tomoyo_name_union *b)
1233
return a->filename == b->filename && a->group == b->group;
1237
* tomoyo_same_number_union - Check for duplicated "struct tomoyo_number_union" entry.
1239
* @a: Pointer to "struct tomoyo_number_union".
1240
* @b: Pointer to "struct tomoyo_number_union".
1242
* Returns true if @a == @b, false otherwise.
1244
static inline bool tomoyo_same_number_union
1245
(const struct tomoyo_number_union *a, const struct tomoyo_number_union *b)
1247
return a->values[0] == b->values[0] && a->values[1] == b->values[1] &&
1248
a->group == b->group && a->value_type[0] == b->value_type[0] &&
1249
a->value_type[1] == b->value_type[1];
1253
* tomoyo_same_ipaddr_union - Check for duplicated "struct tomoyo_ipaddr_union" entry.
1255
* @a: Pointer to "struct tomoyo_ipaddr_union".
1256
* @b: Pointer to "struct tomoyo_ipaddr_union".
1258
* Returns true if @a == @b, false otherwise.
1260
static inline bool tomoyo_same_ipaddr_union
1261
(const struct tomoyo_ipaddr_union *a, const struct tomoyo_ipaddr_union *b)
1263
return !memcmp(a->ip, b->ip, sizeof(a->ip)) && a->group == b->group &&
1264
a->is_ipv6 == b->is_ipv6;
1268
* tomoyo_current_namespace - Get "struct tomoyo_policy_namespace" for current thread.
1270
* Returns pointer to "struct tomoyo_policy_namespace" for current thread.
1272
static inline struct tomoyo_policy_namespace *tomoyo_current_namespace(void)
1274
return tomoyo_domain()->ns;
1277
#if defined(CONFIG_SLOB)
1280
* tomoyo_round2 - Round up to power of 2 for calculating memory usage.
1282
* @size: Size to be rounded up.
1286
* Since SLOB does not round up, this function simply returns @size.
1288
static inline int tomoyo_round2(size_t size)
1296
* tomoyo_round2 - Round up to power of 2 for calculating memory usage.
1298
* @size: Size to be rounded up.
1300
* Returns rounded size.
1302
* Strictly speaking, SLAB may be able to allocate (e.g.) 96 bytes instead of
1305
static inline int tomoyo_round2(size_t size)
1307
#if PAGE_SIZE == 4096
1314
while (size > bsize)
1322
* list_for_each_cookie - iterate over a list with cookie.
1323
* @pos: the &struct list_head to use as a loop cursor.
1324
* @head: the head for your list.
1326
#define list_for_each_cookie(pos, head) \
1328
pos = srcu_dereference((head)->next, &tomoyo_ss); \
1329
for ( ; pos != (head); pos = srcu_dereference(pos->next, &tomoyo_ss))
1331
#endif /* !defined(_SECURITY_TOMOYO_COMMON_H) */