1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Security plug functions
5 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
7 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
8 * Copyright (C) 2016 Mellanox Technologies
11 #define pr_fmt(fmt) "LSM: " fmt
13 #include <linux/bpf.h>
14 #include <linux/capability.h>
15 #include <linux/dcache.h>
16 #include <linux/export.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/kernel_read_file.h>
20 #include <linux/lsm_hooks.h>
21 #include <linux/integrity.h>
22 #include <linux/ima.h>
23 #include <linux/evm.h>
24 #include <linux/fsnotify.h>
25 #include <linux/mman.h>
26 #include <linux/mount.h>
27 #include <linux/personality.h>
28 #include <linux/backing-dev.h>
29 #include <linux/string.h>
30 #include <linux/msg.h>
34 #define MAX_LSM_EVM_XATTR 2
36 /* How many LSMs were built into the kernel? */
37 #define LSM_COUNT (__end_lsm_info - __start_lsm_info)
40 * These are descriptions of the reasons that can be passed to the
41 * security_locked_down() LSM hook. Placing this array here allows
42 * all security modules to use the same descriptions for auditing
45 const char *const lockdown_reasons
[LOCKDOWN_CONFIDENTIALITY_MAX
+1] = {
46 [LOCKDOWN_NONE
] = "none",
47 [LOCKDOWN_MODULE_SIGNATURE
] = "unsigned module loading",
48 [LOCKDOWN_DEV_MEM
] = "/dev/mem,kmem,port",
49 [LOCKDOWN_EFI_TEST
] = "/dev/efi_test access",
50 [LOCKDOWN_KEXEC
] = "kexec of unsigned images",
51 [LOCKDOWN_HIBERNATION
] = "hibernation",
52 [LOCKDOWN_PCI_ACCESS
] = "direct PCI access",
53 [LOCKDOWN_IOPORT
] = "raw io port access",
54 [LOCKDOWN_MSR
] = "raw MSR access",
55 [LOCKDOWN_ACPI_TABLES
] = "modifying ACPI tables",
56 [LOCKDOWN_PCMCIA_CIS
] = "direct PCMCIA CIS storage",
57 [LOCKDOWN_TIOCSSERIAL
] = "reconfiguration of serial port IO",
58 [LOCKDOWN_MODULE_PARAMETERS
] = "unsafe module parameters",
59 [LOCKDOWN_MMIOTRACE
] = "unsafe mmio",
60 [LOCKDOWN_DEBUGFS
] = "debugfs access",
61 [LOCKDOWN_XMON_WR
] = "xmon write access",
62 [LOCKDOWN_BPF_WRITE_USER
] = "use of bpf to write user RAM",
63 [LOCKDOWN_INTEGRITY_MAX
] = "integrity",
64 [LOCKDOWN_KCORE
] = "/proc/kcore access",
65 [LOCKDOWN_KPROBES
] = "use of kprobes",
66 [LOCKDOWN_BPF_READ_KERNEL
] = "use of bpf to read kernel RAM",
67 [LOCKDOWN_PERF
] = "unsafe use of perf",
68 [LOCKDOWN_TRACEFS
] = "use of tracefs",
69 [LOCKDOWN_XMON_RW
] = "xmon read and write access",
70 [LOCKDOWN_XFRM_SECRET
] = "xfrm SA secret",
71 [LOCKDOWN_CONFIDENTIALITY_MAX
] = "confidentiality",
74 struct security_hook_heads security_hook_heads __lsm_ro_after_init
;
75 static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain
);
77 static struct kmem_cache
*lsm_file_cache
;
78 static struct kmem_cache
*lsm_inode_cache
;
81 static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init
;
83 /* Boot-time LSM user choice */
84 static __initdata
const char *chosen_lsm_order
;
85 static __initdata
const char *chosen_major_lsm
;
87 static __initconst
const char * const builtin_lsm_order
= CONFIG_LSM
;
89 /* Ordered list of LSMs to initialize. */
90 static __initdata
struct lsm_info
**ordered_lsms
;
91 static __initdata
struct lsm_info
*exclusive
;
93 static __initdata
bool debug
;
94 #define init_debug(...) \
97 pr_info(__VA_ARGS__); \
100 static bool __init
is_enabled(struct lsm_info
*lsm
)
105 return *lsm
->enabled
;
108 /* Mark an LSM's enabled flag. */
109 static int lsm_enabled_true __initdata
= 1;
110 static int lsm_enabled_false __initdata
= 0;
111 static void __init
set_enabled(struct lsm_info
*lsm
, bool enabled
)
114 * When an LSM hasn't configured an enable variable, we can use
115 * a hard-coded location for storing the default enabled state.
119 lsm
->enabled
= &lsm_enabled_true
;
121 lsm
->enabled
= &lsm_enabled_false
;
122 } else if (lsm
->enabled
== &lsm_enabled_true
) {
124 lsm
->enabled
= &lsm_enabled_false
;
125 } else if (lsm
->enabled
== &lsm_enabled_false
) {
127 lsm
->enabled
= &lsm_enabled_true
;
129 *lsm
->enabled
= enabled
;
133 /* Is an LSM already listed in the ordered LSMs list? */
134 static bool __init
exists_ordered_lsm(struct lsm_info
*lsm
)
136 struct lsm_info
**check
;
138 for (check
= ordered_lsms
; *check
; check
++)
145 /* Append an LSM to the list of ordered LSMs to initialize. */
146 static int last_lsm __initdata
;
147 static void __init
append_ordered_lsm(struct lsm_info
*lsm
, const char *from
)
149 /* Ignore duplicate selections. */
150 if (exists_ordered_lsm(lsm
))
153 if (WARN(last_lsm
== LSM_COUNT
, "%s: out of LSM slots!?\n", from
))
156 /* Enable this LSM, if it is not already set. */
158 lsm
->enabled
= &lsm_enabled_true
;
159 ordered_lsms
[last_lsm
++] = lsm
;
161 init_debug("%s ordering: %s (%sabled)\n", from
, lsm
->name
,
162 is_enabled(lsm
) ? "en" : "dis");
165 /* Is an LSM allowed to be initialized? */
166 static bool __init
lsm_allowed(struct lsm_info
*lsm
)
168 /* Skip if the LSM is disabled. */
169 if (!is_enabled(lsm
))
172 /* Not allowed if another exclusive LSM already initialized. */
173 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && exclusive
) {
174 init_debug("exclusive disabled: %s\n", lsm
->name
);
181 static void __init
lsm_set_blob_size(int *need
, int *lbs
)
192 static void __init
lsm_set_blob_sizes(struct lsm_blob_sizes
*needed
)
197 lsm_set_blob_size(&needed
->lbs_cred
, &blob_sizes
.lbs_cred
);
198 lsm_set_blob_size(&needed
->lbs_file
, &blob_sizes
.lbs_file
);
200 * The inode blob gets an rcu_head in addition to
201 * what the modules might need.
203 if (needed
->lbs_inode
&& blob_sizes
.lbs_inode
== 0)
204 blob_sizes
.lbs_inode
= sizeof(struct rcu_head
);
205 lsm_set_blob_size(&needed
->lbs_inode
, &blob_sizes
.lbs_inode
);
206 lsm_set_blob_size(&needed
->lbs_ipc
, &blob_sizes
.lbs_ipc
);
207 lsm_set_blob_size(&needed
->lbs_msg_msg
, &blob_sizes
.lbs_msg_msg
);
208 lsm_set_blob_size(&needed
->lbs_superblock
, &blob_sizes
.lbs_superblock
);
209 lsm_set_blob_size(&needed
->lbs_sock
, &blob_sizes
.lbs_sock
);
210 lsm_set_blob_size(&needed
->lbs_task
, &blob_sizes
.lbs_task
);
213 /* Prepare LSM for initialization. */
214 static void __init
prepare_lsm(struct lsm_info
*lsm
)
216 int enabled
= lsm_allowed(lsm
);
218 /* Record enablement (to handle any following exclusive LSMs). */
219 set_enabled(lsm
, enabled
);
221 /* If enabled, do pre-initialization work. */
223 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && !exclusive
) {
225 init_debug("exclusive chosen: %s\n", lsm
->name
);
228 lsm_set_blob_sizes(lsm
->blobs
);
232 /* Initialize a given LSM, if it is enabled. */
233 static void __init
initialize_lsm(struct lsm_info
*lsm
)
235 if (is_enabled(lsm
)) {
238 init_debug("initializing %s\n", lsm
->name
);
240 WARN(ret
, "%s failed to initialize: %d\n", lsm
->name
, ret
);
244 /* Populate ordered LSMs list from comma-separated LSM name list. */
245 static void __init
ordered_lsm_parse(const char *order
, const char *origin
)
247 struct lsm_info
*lsm
;
248 char *sep
, *name
, *next
;
250 /* LSM_ORDER_FIRST is always first. */
251 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
252 if (lsm
->order
== LSM_ORDER_FIRST
)
253 append_ordered_lsm(lsm
, "first");
256 /* Process "security=", if given. */
257 if (chosen_major_lsm
) {
258 struct lsm_info
*major
;
261 * To match the original "security=" behavior, this
262 * explicitly does NOT fallback to another Legacy Major
263 * if the selected one was separately disabled: disable
264 * all non-matching Legacy Major LSMs.
266 for (major
= __start_lsm_info
; major
< __end_lsm_info
;
268 if ((major
->flags
& LSM_FLAG_LEGACY_MAJOR
) &&
269 strcmp(major
->name
, chosen_major_lsm
) != 0) {
270 set_enabled(major
, false);
271 init_debug("security=%s disabled: %s\n",
272 chosen_major_lsm
, major
->name
);
277 sep
= kstrdup(order
, GFP_KERNEL
);
279 /* Walk the list, looking for matching LSMs. */
280 while ((name
= strsep(&next
, ",")) != NULL
) {
283 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
284 if (lsm
->order
== LSM_ORDER_MUTABLE
&&
285 strcmp(lsm
->name
, name
) == 0) {
286 append_ordered_lsm(lsm
, origin
);
292 init_debug("%s ignored: %s\n", origin
, name
);
295 /* Process "security=", if given. */
296 if (chosen_major_lsm
) {
297 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
298 if (exists_ordered_lsm(lsm
))
300 if (strcmp(lsm
->name
, chosen_major_lsm
) == 0)
301 append_ordered_lsm(lsm
, "security=");
305 /* Disable all LSMs not in the ordered list. */
306 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
307 if (exists_ordered_lsm(lsm
))
309 set_enabled(lsm
, false);
310 init_debug("%s disabled: %s\n", origin
, lsm
->name
);
316 static void __init
lsm_early_cred(struct cred
*cred
);
317 static void __init
lsm_early_task(struct task_struct
*task
);
319 static int lsm_append(const char *new, char **result
);
321 static void __init
ordered_lsm_init(void)
323 struct lsm_info
**lsm
;
325 ordered_lsms
= kcalloc(LSM_COUNT
+ 1, sizeof(*ordered_lsms
),
328 if (chosen_lsm_order
) {
329 if (chosen_major_lsm
) {
330 pr_info("security= is ignored because it is superseded by lsm=\n");
331 chosen_major_lsm
= NULL
;
333 ordered_lsm_parse(chosen_lsm_order
, "cmdline");
335 ordered_lsm_parse(builtin_lsm_order
, "builtin");
337 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
340 init_debug("cred blob size = %d\n", blob_sizes
.lbs_cred
);
341 init_debug("file blob size = %d\n", blob_sizes
.lbs_file
);
342 init_debug("inode blob size = %d\n", blob_sizes
.lbs_inode
);
343 init_debug("ipc blob size = %d\n", blob_sizes
.lbs_ipc
);
344 init_debug("msg_msg blob size = %d\n", blob_sizes
.lbs_msg_msg
);
345 init_debug("superblock blob size = %d\n", blob_sizes
.lbs_superblock
);
346 init_debug("sock blob size = %d\n", blob_sizes
.lbs_sock
);
347 init_debug("task blob size = %d\n", blob_sizes
.lbs_task
);
348 init_debug("lsmblob size = %zu\n", sizeof(struct lsmblob
));
351 * Create any kmem_caches needed for blobs
353 if (blob_sizes
.lbs_file
)
354 lsm_file_cache
= kmem_cache_create("lsm_file_cache",
355 blob_sizes
.lbs_file
, 0,
357 if (blob_sizes
.lbs_inode
)
358 lsm_inode_cache
= kmem_cache_create("lsm_inode_cache",
359 blob_sizes
.lbs_inode
, 0,
362 lsm_early_cred((struct cred
*) current
->cred
);
363 lsm_early_task(current
);
364 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
365 initialize_lsm(*lsm
);
370 int __init
early_security_init(void)
373 struct hlist_head
*list
= (struct hlist_head
*) &security_hook_heads
;
374 struct lsm_info
*lsm
;
376 for (i
= 0; i
< sizeof(security_hook_heads
) / sizeof(struct hlist_head
);
378 INIT_HLIST_HEAD(&list
[i
]);
380 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
382 lsm
->enabled
= &lsm_enabled_true
;
391 * security_init - initializes the security framework
393 * This should be called early in the kernel initialization sequence.
395 int __init
security_init(void)
397 struct lsm_info
*lsm
;
399 pr_info("Security Framework initializing\n");
402 * Append the names of the early LSM modules now that kmalloc() is
405 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
407 lsm_append(lsm
->name
, &lsm_names
);
410 /* Load LSMs in specified order. */
416 /* Save user chosen LSM */
417 static int __init
choose_major_lsm(char *str
)
419 chosen_major_lsm
= str
;
422 __setup("security=", choose_major_lsm
);
424 /* Explicitly choose LSM initialization order. */
425 static int __init
choose_lsm_order(char *str
)
427 chosen_lsm_order
= str
;
430 __setup("lsm=", choose_lsm_order
);
432 /* Enable LSM order debugging. */
433 static int __init
enable_debug(char *str
)
438 __setup("lsm.debug", enable_debug
);
440 static bool match_last_lsm(const char *list
, const char *lsm
)
444 if (WARN_ON(!list
|| !lsm
))
446 last
= strrchr(list
, ',');
448 /* Pass the comma, strcmp() will check for '\0' */
452 return !strcmp(last
, lsm
);
455 static int lsm_append(const char *new, char **result
)
459 if (*result
== NULL
) {
460 *result
= kstrdup(new, GFP_KERNEL
);
464 /* Check if it is the last registered name */
465 if (match_last_lsm(*result
, new))
467 cp
= kasprintf(GFP_KERNEL
, "%s,%s", *result
, new);
477 * Current index to use while initializing the lsmblob secid list.
479 static int lsm_slot __lsm_ro_after_init
;
482 * security_add_hooks - Add a modules hooks to the hook lists.
483 * @hooks: the hooks to add
484 * @count: the number of hooks to add
485 * @lsmid: the the identification information for the security module
487 * Each LSM has to register its hooks with the infrastructure.
488 * If the LSM is using hooks that export secids allocate a slot
489 * for it in the lsmblob.
491 void __init
security_add_hooks(struct security_hook_list
*hooks
, int count
,
492 struct lsm_id
*lsmid
)
496 if (lsmid
->slot
== LSMBLOB_NEEDED
) {
497 if (lsm_slot
>= LSMBLOB_ENTRIES
)
498 panic("%s Too many LSMs registered.\n", __func__
);
499 lsmid
->slot
= lsm_slot
++;
500 init_debug("%s assigned lsmblob slot %d\n", lsmid
->lsm
,
504 for (i
= 0; i
< count
; i
++) {
505 hooks
[i
].lsmid
= lsmid
;
506 hlist_add_tail_rcu(&hooks
[i
].list
, hooks
[i
].head
);
510 * Don't try to append during early_security_init(), we'll come back
511 * and fix this up afterwards.
513 if (slab_is_available()) {
514 if (lsm_append(lsmid
->lsm
, &lsm_names
) < 0)
515 panic("%s - Cannot get early memory.\n", __func__
);
519 int call_blocking_lsm_notifier(enum lsm_event event
, void *data
)
521 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain
,
524 EXPORT_SYMBOL(call_blocking_lsm_notifier
);
526 int register_blocking_lsm_notifier(struct notifier_block
*nb
)
528 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain
,
531 EXPORT_SYMBOL(register_blocking_lsm_notifier
);
533 int unregister_blocking_lsm_notifier(struct notifier_block
*nb
)
535 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain
,
538 EXPORT_SYMBOL(unregister_blocking_lsm_notifier
);
541 * lsm_cred_alloc - allocate a composite cred blob
542 * @cred: the cred that needs a blob
543 * @gfp: allocation type
545 * Allocate the cred blob for all the modules
547 * Returns 0, or -ENOMEM if memory can't be allocated.
549 static int lsm_cred_alloc(struct cred
*cred
, gfp_t gfp
)
551 if (blob_sizes
.lbs_cred
== 0) {
552 cred
->security
= NULL
;
556 cred
->security
= kzalloc(blob_sizes
.lbs_cred
, gfp
);
557 if (cred
->security
== NULL
)
563 * lsm_early_cred - during initialization allocate a composite cred blob
564 * @cred: the cred that needs a blob
566 * Allocate the cred blob for all the modules
568 static void __init
lsm_early_cred(struct cred
*cred
)
570 int rc
= lsm_cred_alloc(cred
, GFP_KERNEL
);
573 panic("%s: Early cred alloc failed.\n", __func__
);
577 * lsm_file_alloc - allocate a composite file blob
578 * @file: the file that needs a blob
580 * Allocate the file blob for all the modules
582 * Returns 0, or -ENOMEM if memory can't be allocated.
584 static int lsm_file_alloc(struct file
*file
)
586 if (!lsm_file_cache
) {
587 file
->f_security
= NULL
;
591 file
->f_security
= kmem_cache_zalloc(lsm_file_cache
, GFP_KERNEL
);
592 if (file
->f_security
== NULL
)
598 * lsm_inode_alloc - allocate a composite inode blob
599 * @inode: the inode that needs a blob
601 * Allocate the inode blob for all the modules
603 * Returns 0, or -ENOMEM if memory can't be allocated.
605 int lsm_inode_alloc(struct inode
*inode
)
607 if (!lsm_inode_cache
) {
608 inode
->i_security
= NULL
;
612 inode
->i_security
= kmem_cache_zalloc(lsm_inode_cache
, GFP_NOFS
);
613 if (inode
->i_security
== NULL
)
619 * lsm_task_alloc - allocate a composite task blob
620 * @task: the task that needs a blob
622 * Allocate the task blob for all the modules
624 * Returns 0, or -ENOMEM if memory can't be allocated.
626 static int lsm_task_alloc(struct task_struct
*task
)
628 if (blob_sizes
.lbs_task
== 0) {
629 task
->security
= NULL
;
633 task
->security
= kzalloc(blob_sizes
.lbs_task
, GFP_KERNEL
);
634 if (task
->security
== NULL
)
640 * lsm_ipc_alloc - allocate a composite ipc blob
641 * @kip: the ipc that needs a blob
643 * Allocate the ipc blob for all the modules
645 * Returns 0, or -ENOMEM if memory can't be allocated.
647 static int lsm_ipc_alloc(struct kern_ipc_perm
*kip
)
649 if (blob_sizes
.lbs_ipc
== 0) {
650 kip
->security
= NULL
;
654 kip
->security
= kzalloc(blob_sizes
.lbs_ipc
, GFP_KERNEL
);
655 if (kip
->security
== NULL
)
661 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
662 * @mp: the msg_msg that needs a blob
664 * Allocate the ipc blob for all the modules
666 * Returns 0, or -ENOMEM if memory can't be allocated.
668 static int lsm_msg_msg_alloc(struct msg_msg
*mp
)
670 if (blob_sizes
.lbs_msg_msg
== 0) {
675 mp
->security
= kzalloc(blob_sizes
.lbs_msg_msg
, GFP_KERNEL
);
676 if (mp
->security
== NULL
)
682 * lsm_sock_alloc - allocate a composite sock blob
683 * @sock: the sock that needs a blob
684 * @priority: allocation mode
686 * Allocate the sock blob for all the modules
688 * Returns 0, or -ENOMEM if memory can't be allocated.
690 static int lsm_sock_alloc(struct sock
*sock
, gfp_t priority
)
692 if (blob_sizes
.lbs_sock
== 0) {
693 sock
->sk_security
= NULL
;
697 sock
->sk_security
= kzalloc(blob_sizes
.lbs_sock
, priority
);
698 if (sock
->sk_security
== NULL
)
704 * lsm_early_task - during initialization allocate a composite task blob
705 * @task: the task that needs a blob
707 * Allocate the task blob for all the modules
709 static void __init
lsm_early_task(struct task_struct
*task
)
711 int rc
= lsm_task_alloc(task
);
714 panic("%s: Early task alloc failed.\n", __func__
);
718 * lsm_superblock_alloc - allocate a composite superblock blob
719 * @sb: the superblock that needs a blob
721 * Allocate the superblock blob for all the modules
723 * Returns 0, or -ENOMEM if memory can't be allocated.
725 static int lsm_superblock_alloc(struct super_block
*sb
)
727 if (blob_sizes
.lbs_superblock
== 0) {
728 sb
->s_security
= NULL
;
732 sb
->s_security
= kzalloc(blob_sizes
.lbs_superblock
, GFP_KERNEL
);
733 if (sb
->s_security
== NULL
)
739 * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
740 * can be accessed with:
742 * LSM_RET_DEFAULT(<hook_name>)
744 * The macros below define static constants for the default value of each
747 #define LSM_RET_DEFAULT(NAME) (NAME##_default)
748 #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
749 #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
750 static const int LSM_RET_DEFAULT(NAME) = (DEFAULT);
751 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
752 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
754 #include <linux/lsm_hook_defs.h>
758 * Hook list operation macros.
761 * This is a hook that does not return a value.
764 * This is a hook that returns a value.
767 #define call_void_hook(FUNC, ...) \
769 struct security_hook_list *P; \
771 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
772 P->hook.FUNC(__VA_ARGS__); \
775 #define call_int_hook(FUNC, IRC, ...) ({ \
778 struct security_hook_list *P; \
780 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
781 RC = P->hook.FUNC(__VA_ARGS__); \
789 /* Security operations */
791 int security_binder_set_context_mgr(struct task_struct
*mgr
)
793 return call_int_hook(binder_set_context_mgr
, 0, mgr
);
795 EXPORT_SYMBOL(security_binder_set_context_mgr
);
797 int security_binder_transaction(struct task_struct
*from
,
798 struct task_struct
*to
)
800 return call_int_hook(binder_transaction
, 0, from
, to
);
802 EXPORT_SYMBOL(security_binder_transaction
);
804 int security_binder_transfer_binder(struct task_struct
*from
,
805 struct task_struct
*to
)
807 return call_int_hook(binder_transfer_binder
, 0, from
, to
);
809 EXPORT_SYMBOL(security_binder_transfer_binder
);
811 int security_binder_transfer_file(struct task_struct
*from
,
812 struct task_struct
*to
, struct file
*file
)
814 return call_int_hook(binder_transfer_file
, 0, from
, to
, file
);
816 EXPORT_SYMBOL(security_binder_transfer_file
);
818 int security_ptrace_access_check(struct task_struct
*child
, unsigned int mode
)
820 return call_int_hook(ptrace_access_check
, 0, child
, mode
);
823 int security_ptrace_traceme(struct task_struct
*parent
)
825 return call_int_hook(ptrace_traceme
, 0, parent
);
828 int security_capget(struct task_struct
*target
,
829 kernel_cap_t
*effective
,
830 kernel_cap_t
*inheritable
,
831 kernel_cap_t
*permitted
)
833 return call_int_hook(capget
, 0, target
,
834 effective
, inheritable
, permitted
);
837 int security_capset(struct cred
*new, const struct cred
*old
,
838 const kernel_cap_t
*effective
,
839 const kernel_cap_t
*inheritable
,
840 const kernel_cap_t
*permitted
)
842 return call_int_hook(capset
, 0, new, old
,
843 effective
, inheritable
, permitted
);
846 int security_capable(const struct cred
*cred
,
847 struct user_namespace
*ns
,
851 return call_int_hook(capable
, 0, cred
, ns
, cap
, opts
);
854 int security_quotactl(int cmds
, int type
, int id
, struct super_block
*sb
)
856 return call_int_hook(quotactl
, 0, cmds
, type
, id
, sb
);
859 int security_quota_on(struct dentry
*dentry
)
861 return call_int_hook(quota_on
, 0, dentry
);
864 int security_syslog(int type
)
866 return call_int_hook(syslog
, 0, type
);
869 int security_settime64(const struct timespec64
*ts
, const struct timezone
*tz
)
871 return call_int_hook(settime
, 0, ts
, tz
);
874 int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
)
876 struct security_hook_list
*hp
;
877 int cap_sys_admin
= 1;
881 * The module will respond with a positive value if
882 * it thinks the __vm_enough_memory() call should be
883 * made with the cap_sys_admin set. If all of the modules
884 * agree that it should be set it will. If any module
885 * thinks it should not be set it won't.
887 hlist_for_each_entry(hp
, &security_hook_heads
.vm_enough_memory
, list
) {
888 rc
= hp
->hook
.vm_enough_memory(mm
, pages
);
894 return __vm_enough_memory(mm
, pages
, cap_sys_admin
);
897 int security_bprm_creds_for_exec(struct linux_binprm
*bprm
)
899 return call_int_hook(bprm_creds_for_exec
, 0, bprm
);
902 int security_bprm_creds_from_file(struct linux_binprm
*bprm
, struct file
*file
)
904 return call_int_hook(bprm_creds_from_file
, 0, bprm
, file
);
907 int security_bprm_check(struct linux_binprm
*bprm
)
911 ret
= call_int_hook(bprm_check_security
, 0, bprm
);
914 return ima_bprm_check(bprm
);
917 void security_bprm_committing_creds(struct linux_binprm
*bprm
)
919 call_void_hook(bprm_committing_creds
, bprm
);
922 void security_bprm_committed_creds(struct linux_binprm
*bprm
)
924 call_void_hook(bprm_committed_creds
, bprm
);
927 int security_fs_context_dup(struct fs_context
*fc
, struct fs_context
*src_fc
)
929 return call_int_hook(fs_context_dup
, 0, fc
, src_fc
);
932 int security_fs_context_parse_param(struct fs_context
*fc
, struct fs_parameter
*param
)
934 return call_int_hook(fs_context_parse_param
, -ENOPARAM
, fc
, param
);
937 int security_sb_alloc(struct super_block
*sb
)
939 int rc
= lsm_superblock_alloc(sb
);
943 rc
= call_int_hook(sb_alloc_security
, 0, sb
);
945 security_sb_free(sb
);
949 void security_sb_delete(struct super_block
*sb
)
951 call_void_hook(sb_delete
, sb
);
954 void security_sb_free(struct super_block
*sb
)
956 call_void_hook(sb_free_security
, sb
);
957 kfree(sb
->s_security
);
958 sb
->s_security
= NULL
;
961 void security_free_mnt_opts(void **mnt_opts
)
965 call_void_hook(sb_free_mnt_opts
, *mnt_opts
);
968 EXPORT_SYMBOL(security_free_mnt_opts
);
970 int security_sb_eat_lsm_opts(char *options
, void **mnt_opts
)
972 return call_int_hook(sb_eat_lsm_opts
, 0, options
, mnt_opts
);
974 EXPORT_SYMBOL(security_sb_eat_lsm_opts
);
976 int security_sb_mnt_opts_compat(struct super_block
*sb
,
979 return call_int_hook(sb_mnt_opts_compat
, 0, sb
, mnt_opts
);
981 EXPORT_SYMBOL(security_sb_mnt_opts_compat
);
983 int security_sb_remount(struct super_block
*sb
,
986 return call_int_hook(sb_remount
, 0, sb
, mnt_opts
);
988 EXPORT_SYMBOL(security_sb_remount
);
990 int security_sb_kern_mount(struct super_block
*sb
)
992 return call_int_hook(sb_kern_mount
, 0, sb
);
995 int security_sb_show_options(struct seq_file
*m
, struct super_block
*sb
)
997 return call_int_hook(sb_show_options
, 0, m
, sb
);
1000 int security_sb_statfs(struct dentry
*dentry
)
1002 return call_int_hook(sb_statfs
, 0, dentry
);
1005 int security_sb_mount(const char *dev_name
, const struct path
*path
,
1006 const char *type
, unsigned long flags
, void *data
)
1008 return call_int_hook(sb_mount
, 0, dev_name
, path
, type
, flags
, data
);
1011 int security_sb_umount(struct vfsmount
*mnt
, int flags
)
1013 return call_int_hook(sb_umount
, 0, mnt
, flags
);
1016 int security_sb_pivotroot(const struct path
*old_path
, const struct path
*new_path
)
1018 return call_int_hook(sb_pivotroot
, 0, old_path
, new_path
);
1021 int security_sb_set_mnt_opts(struct super_block
*sb
,
1023 unsigned long kern_flags
,
1024 unsigned long *set_kern_flags
)
1026 return call_int_hook(sb_set_mnt_opts
,
1027 mnt_opts
? -EOPNOTSUPP
: 0, sb
,
1028 mnt_opts
, kern_flags
, set_kern_flags
);
1030 EXPORT_SYMBOL(security_sb_set_mnt_opts
);
1032 int security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
1033 struct super_block
*newsb
,
1034 unsigned long kern_flags
,
1035 unsigned long *set_kern_flags
)
1037 return call_int_hook(sb_clone_mnt_opts
, 0, oldsb
, newsb
,
1038 kern_flags
, set_kern_flags
);
1040 EXPORT_SYMBOL(security_sb_clone_mnt_opts
);
1042 int security_add_mnt_opt(const char *option
, const char *val
, int len
,
1045 return call_int_hook(sb_add_mnt_opt
, -EINVAL
,
1046 option
, val
, len
, mnt_opts
);
1048 EXPORT_SYMBOL(security_add_mnt_opt
);
1050 int security_move_mount(const struct path
*from_path
, const struct path
*to_path
)
1052 return call_int_hook(move_mount
, 0, from_path
, to_path
);
1055 int security_path_notify(const struct path
*path
, u64 mask
,
1056 unsigned int obj_type
)
1058 return call_int_hook(path_notify
, 0, path
, mask
, obj_type
);
1061 int security_inode_alloc(struct inode
*inode
)
1063 int rc
= lsm_inode_alloc(inode
);
1067 rc
= call_int_hook(inode_alloc_security
, 0, inode
);
1069 security_inode_free(inode
);
1073 static void inode_free_by_rcu(struct rcu_head
*head
)
1076 * The rcu head is at the start of the inode blob
1078 kmem_cache_free(lsm_inode_cache
, head
);
1081 void security_inode_free(struct inode
*inode
)
1083 integrity_inode_free(inode
);
1084 call_void_hook(inode_free_security
, inode
);
1086 * The inode may still be referenced in a path walk and
1087 * a call to security_inode_permission() can be made
1088 * after inode_free_security() is called. Ideally, the VFS
1089 * wouldn't do this, but fixing that is a much harder
1090 * job. For now, simply free the i_security via RCU, and
1091 * leave the current inode->i_security pointer intact.
1092 * The inode will be freed after the RCU grace period too.
1094 if (inode
->i_security
)
1095 call_rcu((struct rcu_head
*)inode
->i_security
,
1099 int security_dentry_init_security(struct dentry
*dentry
, int mode
,
1100 const struct qstr
*name
, void **ctx
,
1103 return call_int_hook(dentry_init_security
, -EOPNOTSUPP
, dentry
, mode
,
1106 EXPORT_SYMBOL(security_dentry_init_security
);
1108 int security_dentry_create_files_as(struct dentry
*dentry
, int mode
,
1110 const struct cred
*old
, struct cred
*new)
1112 return call_int_hook(dentry_create_files_as
, 0, dentry
, mode
,
1115 EXPORT_SYMBOL(security_dentry_create_files_as
);
1117 int security_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1118 const struct qstr
*qstr
,
1119 const initxattrs initxattrs
, void *fs_data
)
1121 struct xattr new_xattrs
[MAX_LSM_EVM_XATTR
+ 1];
1122 struct xattr
*lsm_xattr
, *evm_xattr
, *xattr
;
1125 if (unlikely(IS_PRIVATE(inode
)))
1129 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
,
1130 dir
, qstr
, NULL
, NULL
, NULL
);
1131 memset(new_xattrs
, 0, sizeof(new_xattrs
));
1132 lsm_xattr
= new_xattrs
;
1133 ret
= call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
, qstr
,
1136 &lsm_xattr
->value_len
);
1140 evm_xattr
= lsm_xattr
+ 1;
1141 ret
= evm_inode_init_security(inode
, lsm_xattr
, evm_xattr
);
1144 ret
= initxattrs(inode
, new_xattrs
, fs_data
);
1146 for (xattr
= new_xattrs
; xattr
->value
!= NULL
; xattr
++)
1147 kfree(xattr
->value
);
1148 return (ret
== -EOPNOTSUPP
) ? 0 : ret
;
1150 EXPORT_SYMBOL(security_inode_init_security
);
1152 int security_inode_init_security_anon(struct inode
*inode
,
1153 const struct qstr
*name
,
1154 const struct inode
*context_inode
)
1156 return call_int_hook(inode_init_security_anon
, 0, inode
, name
,
1160 int security_old_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1161 const struct qstr
*qstr
, const char **name
,
1162 void **value
, size_t *len
)
1164 if (unlikely(IS_PRIVATE(inode
)))
1166 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
,
1167 qstr
, name
, value
, len
);
1169 EXPORT_SYMBOL(security_old_inode_init_security
);
1171 #ifdef CONFIG_SECURITY_PATH
1172 int security_path_mknod(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
,
1175 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1177 return call_int_hook(path_mknod
, 0, dir
, dentry
, mode
, dev
);
1179 EXPORT_SYMBOL(security_path_mknod
);
1181 int security_path_mkdir(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
)
1183 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1185 return call_int_hook(path_mkdir
, 0, dir
, dentry
, mode
);
1187 EXPORT_SYMBOL(security_path_mkdir
);
1189 int security_path_rmdir(const struct path
*dir
, struct dentry
*dentry
)
1191 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1193 return call_int_hook(path_rmdir
, 0, dir
, dentry
);
1196 int security_path_unlink(const struct path
*dir
, struct dentry
*dentry
)
1198 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1200 return call_int_hook(path_unlink
, 0, dir
, dentry
);
1202 EXPORT_SYMBOL(security_path_unlink
);
1204 int security_path_symlink(const struct path
*dir
, struct dentry
*dentry
,
1205 const char *old_name
)
1207 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1209 return call_int_hook(path_symlink
, 0, dir
, dentry
, old_name
);
1212 int security_path_link(struct dentry
*old_dentry
, const struct path
*new_dir
,
1213 struct dentry
*new_dentry
)
1215 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1217 return call_int_hook(path_link
, 0, old_dentry
, new_dir
, new_dentry
);
1220 int security_path_rename(const struct path
*old_dir
, struct dentry
*old_dentry
,
1221 const struct path
*new_dir
, struct dentry
*new_dentry
,
1224 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1225 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1228 if (flags
& RENAME_EXCHANGE
) {
1229 int err
= call_int_hook(path_rename
, 0, new_dir
, new_dentry
,
1230 old_dir
, old_dentry
);
1235 return call_int_hook(path_rename
, 0, old_dir
, old_dentry
, new_dir
,
1238 EXPORT_SYMBOL(security_path_rename
);
1240 int security_path_truncate(const struct path
*path
)
1242 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1244 return call_int_hook(path_truncate
, 0, path
);
1247 int security_path_chmod(const struct path
*path
, umode_t mode
)
1249 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1251 return call_int_hook(path_chmod
, 0, path
, mode
);
1254 int security_path_chown(const struct path
*path
, kuid_t uid
, kgid_t gid
)
1256 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1258 return call_int_hook(path_chown
, 0, path
, uid
, gid
);
1261 int security_path_chroot(const struct path
*path
)
1263 return call_int_hook(path_chroot
, 0, path
);
1267 int security_inode_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1269 if (unlikely(IS_PRIVATE(dir
)))
1271 return call_int_hook(inode_create
, 0, dir
, dentry
, mode
);
1273 EXPORT_SYMBOL_GPL(security_inode_create
);
1275 int security_inode_link(struct dentry
*old_dentry
, struct inode
*dir
,
1276 struct dentry
*new_dentry
)
1278 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1280 return call_int_hook(inode_link
, 0, old_dentry
, dir
, new_dentry
);
1283 int security_inode_unlink(struct inode
*dir
, struct dentry
*dentry
)
1285 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1287 return call_int_hook(inode_unlink
, 0, dir
, dentry
);
1290 int security_inode_symlink(struct inode
*dir
, struct dentry
*dentry
,
1291 const char *old_name
)
1293 if (unlikely(IS_PRIVATE(dir
)))
1295 return call_int_hook(inode_symlink
, 0, dir
, dentry
, old_name
);
1298 int security_inode_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1300 if (unlikely(IS_PRIVATE(dir
)))
1302 return call_int_hook(inode_mkdir
, 0, dir
, dentry
, mode
);
1304 EXPORT_SYMBOL_GPL(security_inode_mkdir
);
1306 int security_inode_rmdir(struct inode
*dir
, struct dentry
*dentry
)
1308 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1310 return call_int_hook(inode_rmdir
, 0, dir
, dentry
);
1313 int security_inode_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
, dev_t dev
)
1315 if (unlikely(IS_PRIVATE(dir
)))
1317 return call_int_hook(inode_mknod
, 0, dir
, dentry
, mode
, dev
);
1320 int security_inode_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1321 struct inode
*new_dir
, struct dentry
*new_dentry
,
1324 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1325 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1328 if (flags
& RENAME_EXCHANGE
) {
1329 int err
= call_int_hook(inode_rename
, 0, new_dir
, new_dentry
,
1330 old_dir
, old_dentry
);
1335 return call_int_hook(inode_rename
, 0, old_dir
, old_dentry
,
1336 new_dir
, new_dentry
);
1339 int security_inode_readlink(struct dentry
*dentry
)
1341 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1343 return call_int_hook(inode_readlink
, 0, dentry
);
1346 int security_inode_follow_link(struct dentry
*dentry
, struct inode
*inode
,
1349 if (unlikely(IS_PRIVATE(inode
)))
1351 return call_int_hook(inode_follow_link
, 0, dentry
, inode
, rcu
);
1354 int security_inode_permission(struct inode
*inode
, int mask
)
1356 if (unlikely(IS_PRIVATE(inode
)))
1358 return call_int_hook(inode_permission
, 0, inode
, mask
);
1361 int security_inode_setattr(struct dentry
*dentry
, struct iattr
*attr
)
1365 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1367 ret
= call_int_hook(inode_setattr
, 0, dentry
, attr
);
1370 return evm_inode_setattr(dentry
, attr
);
1372 EXPORT_SYMBOL_GPL(security_inode_setattr
);
1374 int security_inode_getattr(const struct path
*path
)
1376 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1378 return call_int_hook(inode_getattr
, 0, path
);
1381 int security_inode_setxattr(struct user_namespace
*mnt_userns
,
1382 struct dentry
*dentry
, const char *name
,
1383 const void *value
, size_t size
, int flags
)
1387 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1390 * SELinux and Smack integrate the cap call,
1391 * so assume that all LSMs supplying this call do so.
1393 ret
= call_int_hook(inode_setxattr
, 1, mnt_userns
, dentry
, name
, value
,
1397 ret
= cap_inode_setxattr(dentry
, name
, value
, size
, flags
);
1400 ret
= ima_inode_setxattr(dentry
, name
, value
, size
);
1403 return evm_inode_setxattr(mnt_userns
, dentry
, name
, value
, size
);
1406 void security_inode_post_setxattr(struct dentry
*dentry
, const char *name
,
1407 const void *value
, size_t size
, int flags
)
1409 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1411 call_void_hook(inode_post_setxattr
, dentry
, name
, value
, size
, flags
);
1412 evm_inode_post_setxattr(dentry
, name
, value
, size
);
1415 int security_inode_getxattr(struct dentry
*dentry
, const char *name
)
1417 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1419 return call_int_hook(inode_getxattr
, 0, dentry
, name
);
1422 int security_inode_listxattr(struct dentry
*dentry
)
1424 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1426 return call_int_hook(inode_listxattr
, 0, dentry
);
1429 int security_inode_removexattr(struct user_namespace
*mnt_userns
,
1430 struct dentry
*dentry
, const char *name
)
1434 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1437 * SELinux and Smack integrate the cap call,
1438 * so assume that all LSMs supplying this call do so.
1440 ret
= call_int_hook(inode_removexattr
, 1, mnt_userns
, dentry
, name
);
1442 ret
= cap_inode_removexattr(mnt_userns
, dentry
, name
);
1445 ret
= ima_inode_removexattr(dentry
, name
);
1448 return evm_inode_removexattr(mnt_userns
, dentry
, name
);
1451 int security_inode_need_killpriv(struct dentry
*dentry
)
1453 return call_int_hook(inode_need_killpriv
, 0, dentry
);
1456 int security_inode_killpriv(struct user_namespace
*mnt_userns
,
1457 struct dentry
*dentry
)
1459 return call_int_hook(inode_killpriv
, 0, mnt_userns
, dentry
);
1462 int security_inode_getsecurity(struct user_namespace
*mnt_userns
,
1463 struct inode
*inode
, const char *name
,
1464 void **buffer
, bool alloc
)
1466 struct security_hook_list
*hp
;
1469 if (unlikely(IS_PRIVATE(inode
)))
1470 return LSM_RET_DEFAULT(inode_getsecurity
);
1472 * Only one module will provide an attribute with a given name.
1474 hlist_for_each_entry(hp
, &security_hook_heads
.inode_getsecurity
, list
) {
1475 rc
= hp
->hook
.inode_getsecurity(mnt_userns
, inode
, name
, buffer
, alloc
);
1476 if (rc
!= LSM_RET_DEFAULT(inode_getsecurity
))
1479 return LSM_RET_DEFAULT(inode_getsecurity
);
1482 int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
)
1484 struct security_hook_list
*hp
;
1487 if (unlikely(IS_PRIVATE(inode
)))
1488 return LSM_RET_DEFAULT(inode_setsecurity
);
1490 * Only one module will provide an attribute with a given name.
1492 hlist_for_each_entry(hp
, &security_hook_heads
.inode_setsecurity
, list
) {
1493 rc
= hp
->hook
.inode_setsecurity(inode
, name
, value
, size
,
1495 if (rc
!= LSM_RET_DEFAULT(inode_setsecurity
))
1498 return LSM_RET_DEFAULT(inode_setsecurity
);
1501 int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
)
1503 if (unlikely(IS_PRIVATE(inode
)))
1505 return call_int_hook(inode_listsecurity
, 0, inode
, buffer
, buffer_size
);
1507 EXPORT_SYMBOL(security_inode_listsecurity
);
1509 void security_inode_getsecid(struct inode
*inode
, u32
*secid
)
1511 call_void_hook(inode_getsecid
, inode
, secid
);
1514 int security_inode_copy_up(struct dentry
*src
, struct cred
**new)
1516 return call_int_hook(inode_copy_up
, 0, src
, new);
1518 EXPORT_SYMBOL(security_inode_copy_up
);
1520 int security_inode_copy_up_xattr(const char *name
)
1522 struct security_hook_list
*hp
;
1526 * The implementation can return 0 (accept the xattr), 1 (discard the
1527 * xattr), -EOPNOTSUPP if it does not know anything about the xattr or
1528 * any other error code incase of an error.
1530 hlist_for_each_entry(hp
,
1531 &security_hook_heads
.inode_copy_up_xattr
, list
) {
1532 rc
= hp
->hook
.inode_copy_up_xattr(name
);
1533 if (rc
!= LSM_RET_DEFAULT(inode_copy_up_xattr
))
1537 return LSM_RET_DEFAULT(inode_copy_up_xattr
);
1539 EXPORT_SYMBOL(security_inode_copy_up_xattr
);
1541 int security_kernfs_init_security(struct kernfs_node
*kn_dir
,
1542 struct kernfs_node
*kn
)
1544 return call_int_hook(kernfs_init_security
, 0, kn_dir
, kn
);
1547 int security_file_permission(struct file
*file
, int mask
)
1551 ret
= call_int_hook(file_permission
, 0, file
, mask
);
1555 return fsnotify_perm(file
, mask
);
1558 int security_file_alloc(struct file
*file
)
1560 int rc
= lsm_file_alloc(file
);
1564 rc
= call_int_hook(file_alloc_security
, 0, file
);
1566 security_file_free(file
);
1570 void security_file_free(struct file
*file
)
1574 call_void_hook(file_free_security
, file
);
1576 blob
= file
->f_security
;
1578 file
->f_security
= NULL
;
1579 kmem_cache_free(lsm_file_cache
, blob
);
1583 int security_file_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1585 return call_int_hook(file_ioctl
, 0, file
, cmd
, arg
);
1587 EXPORT_SYMBOL_GPL(security_file_ioctl
);
1589 static inline unsigned long mmap_prot(struct file
*file
, unsigned long prot
)
1592 * Does we have PROT_READ and does the application expect
1593 * it to imply PROT_EXEC? If not, nothing to talk about...
1595 if ((prot
& (PROT_READ
| PROT_EXEC
)) != PROT_READ
)
1597 if (!(current
->personality
& READ_IMPLIES_EXEC
))
1600 * if that's an anonymous mapping, let it.
1603 return prot
| PROT_EXEC
;
1605 * ditto if it's not on noexec mount, except that on !MMU we need
1606 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1608 if (!path_noexec(&file
->f_path
)) {
1610 if (file
->f_op
->mmap_capabilities
) {
1611 unsigned caps
= file
->f_op
->mmap_capabilities(file
);
1612 if (!(caps
& NOMMU_MAP_EXEC
))
1616 return prot
| PROT_EXEC
;
1618 /* anything on noexec mount won't get PROT_EXEC */
1622 int security_mmap_file(struct file
*file
, unsigned long prot
,
1623 unsigned long flags
)
1626 ret
= call_int_hook(mmap_file
, 0, file
, prot
,
1627 mmap_prot(file
, prot
), flags
);
1630 return ima_file_mmap(file
, prot
);
1633 int security_mmap_addr(unsigned long addr
)
1635 return call_int_hook(mmap_addr
, 0, addr
);
1638 int security_file_mprotect(struct vm_area_struct
*vma
, unsigned long reqprot
,
1643 ret
= call_int_hook(file_mprotect
, 0, vma
, reqprot
, prot
);
1646 return ima_file_mprotect(vma
, prot
);
1649 int security_file_lock(struct file
*file
, unsigned int cmd
)
1651 return call_int_hook(file_lock
, 0, file
, cmd
);
1654 int security_file_fcntl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1656 return call_int_hook(file_fcntl
, 0, file
, cmd
, arg
);
1659 void security_file_set_fowner(struct file
*file
)
1661 call_void_hook(file_set_fowner
, file
);
1664 int security_file_send_sigiotask(struct task_struct
*tsk
,
1665 struct fown_struct
*fown
, int sig
)
1667 return call_int_hook(file_send_sigiotask
, 0, tsk
, fown
, sig
);
1670 int security_file_receive(struct file
*file
)
1672 return call_int_hook(file_receive
, 0, file
);
1675 int security_file_open(struct file
*file
)
1679 ret
= call_int_hook(file_open
, 0, file
);
1683 return fsnotify_perm(file
, MAY_OPEN
);
1686 int security_task_alloc(struct task_struct
*task
, unsigned long clone_flags
)
1688 int rc
= lsm_task_alloc(task
);
1692 rc
= call_int_hook(task_alloc
, 0, task
, clone_flags
);
1694 security_task_free(task
);
1698 void security_task_free(struct task_struct
*task
)
1700 call_void_hook(task_free
, task
);
1702 kfree(task
->security
);
1703 task
->security
= NULL
;
1706 int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
)
1708 int rc
= lsm_cred_alloc(cred
, gfp
);
1713 rc
= call_int_hook(cred_alloc_blank
, 0, cred
, gfp
);
1715 security_cred_free(cred
);
1719 void security_cred_free(struct cred
*cred
)
1722 * There is a failure case in prepare_creds() that
1723 * may result in a call here with ->security being NULL.
1725 if (unlikely(cred
->security
== NULL
))
1728 call_void_hook(cred_free
, cred
);
1730 kfree(cred
->security
);
1731 cred
->security
= NULL
;
1734 int security_prepare_creds(struct cred
*new, const struct cred
*old
, gfp_t gfp
)
1736 int rc
= lsm_cred_alloc(new, gfp
);
1741 rc
= call_int_hook(cred_prepare
, 0, new, old
, gfp
);
1743 security_cred_free(new);
1747 void security_transfer_creds(struct cred
*new, const struct cred
*old
)
1749 call_void_hook(cred_transfer
, new, old
);
1752 void security_cred_getsecid(const struct cred
*c
, u32
*secid
)
1755 call_void_hook(cred_getsecid
, c
, secid
);
1757 EXPORT_SYMBOL(security_cred_getsecid
);
1759 int security_kernel_act_as(struct cred
*new, u32 secid
)
1761 return call_int_hook(kernel_act_as
, 0, new, secid
);
1764 int security_kernel_create_files_as(struct cred
*new, struct inode
*inode
)
1766 return call_int_hook(kernel_create_files_as
, 0, new, inode
);
1769 int security_kernel_module_request(char *kmod_name
)
1773 ret
= call_int_hook(kernel_module_request
, 0, kmod_name
);
1776 return integrity_kernel_module_request(kmod_name
);
1779 int security_kernel_read_file(struct file
*file
, enum kernel_read_file_id id
,
1784 ret
= call_int_hook(kernel_read_file
, 0, file
, id
, contents
);
1787 return ima_read_file(file
, id
, contents
);
1789 EXPORT_SYMBOL_GPL(security_kernel_read_file
);
1791 int security_kernel_post_read_file(struct file
*file
, char *buf
, loff_t size
,
1792 enum kernel_read_file_id id
)
1796 ret
= call_int_hook(kernel_post_read_file
, 0, file
, buf
, size
, id
);
1799 return ima_post_read_file(file
, buf
, size
, id
);
1801 EXPORT_SYMBOL_GPL(security_kernel_post_read_file
);
1803 int security_kernel_load_data(enum kernel_load_data_id id
, bool contents
)
1807 ret
= call_int_hook(kernel_load_data
, 0, id
, contents
);
1810 return ima_load_data(id
, contents
);
1812 EXPORT_SYMBOL_GPL(security_kernel_load_data
);
1814 int security_kernel_post_load_data(char *buf
, loff_t size
,
1815 enum kernel_load_data_id id
,
1820 ret
= call_int_hook(kernel_post_load_data
, 0, buf
, size
, id
,
1824 return ima_post_load_data(buf
, size
, id
, description
);
1826 EXPORT_SYMBOL_GPL(security_kernel_post_load_data
);
1828 int security_task_fix_setuid(struct cred
*new, const struct cred
*old
,
1831 return call_int_hook(task_fix_setuid
, 0, new, old
, flags
);
1834 int security_task_fix_setgid(struct cred
*new, const struct cred
*old
,
1837 return call_int_hook(task_fix_setgid
, 0, new, old
, flags
);
1840 int security_task_setpgid(struct task_struct
*p
, pid_t pgid
)
1842 return call_int_hook(task_setpgid
, 0, p
, pgid
);
1845 int security_task_getpgid(struct task_struct
*p
)
1847 return call_int_hook(task_getpgid
, 0, p
);
1850 int security_task_getsid(struct task_struct
*p
)
1852 return call_int_hook(task_getsid
, 0, p
);
1855 void security_task_getsecid_subj(struct task_struct
*p
, u32
*secid
)
1858 call_void_hook(task_getsecid_subj
, p
, secid
);
1860 EXPORT_SYMBOL(security_task_getsecid_subj
);
1862 void security_task_getsecid_obj(struct task_struct
*p
, u32
*secid
)
1865 call_void_hook(task_getsecid_obj
, p
, secid
);
1867 EXPORT_SYMBOL(security_task_getsecid_obj
);
1869 int security_task_setnice(struct task_struct
*p
, int nice
)
1871 return call_int_hook(task_setnice
, 0, p
, nice
);
1874 int security_task_setioprio(struct task_struct
*p
, int ioprio
)
1876 return call_int_hook(task_setioprio
, 0, p
, ioprio
);
1879 int security_task_getioprio(struct task_struct
*p
)
1881 return call_int_hook(task_getioprio
, 0, p
);
1884 int security_task_prlimit(const struct cred
*cred
, const struct cred
*tcred
,
1887 return call_int_hook(task_prlimit
, 0, cred
, tcred
, flags
);
1890 int security_task_setrlimit(struct task_struct
*p
, unsigned int resource
,
1891 struct rlimit
*new_rlim
)
1893 return call_int_hook(task_setrlimit
, 0, p
, resource
, new_rlim
);
1896 int security_task_setscheduler(struct task_struct
*p
)
1898 return call_int_hook(task_setscheduler
, 0, p
);
1901 int security_task_getscheduler(struct task_struct
*p
)
1903 return call_int_hook(task_getscheduler
, 0, p
);
1906 int security_task_movememory(struct task_struct
*p
)
1908 return call_int_hook(task_movememory
, 0, p
);
1911 int security_task_kill(struct task_struct
*p
, struct kernel_siginfo
*info
,
1912 int sig
, const struct cred
*cred
)
1914 return call_int_hook(task_kill
, 0, p
, info
, sig
, cred
);
1917 int security_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1918 unsigned long arg4
, unsigned long arg5
)
1921 int rc
= LSM_RET_DEFAULT(task_prctl
);
1922 struct security_hook_list
*hp
;
1924 hlist_for_each_entry(hp
, &security_hook_heads
.task_prctl
, list
) {
1925 thisrc
= hp
->hook
.task_prctl(option
, arg2
, arg3
, arg4
, arg5
);
1926 if (thisrc
!= LSM_RET_DEFAULT(task_prctl
)) {
1935 void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
)
1937 call_void_hook(task_to_inode
, p
, inode
);
1940 int security_ipc_permission(struct kern_ipc_perm
*ipcp
, short flag
)
1942 return call_int_hook(ipc_permission
, 0, ipcp
, flag
);
1945 void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
)
1948 call_void_hook(ipc_getsecid
, ipcp
, secid
);
1951 int security_msg_msg_alloc(struct msg_msg
*msg
)
1953 int rc
= lsm_msg_msg_alloc(msg
);
1957 rc
= call_int_hook(msg_msg_alloc_security
, 0, msg
);
1959 security_msg_msg_free(msg
);
1963 void security_msg_msg_free(struct msg_msg
*msg
)
1965 call_void_hook(msg_msg_free_security
, msg
);
1966 kfree(msg
->security
);
1967 msg
->security
= NULL
;
1970 int security_msg_queue_alloc(struct kern_ipc_perm
*msq
)
1972 int rc
= lsm_ipc_alloc(msq
);
1976 rc
= call_int_hook(msg_queue_alloc_security
, 0, msq
);
1978 security_msg_queue_free(msq
);
1982 void security_msg_queue_free(struct kern_ipc_perm
*msq
)
1984 call_void_hook(msg_queue_free_security
, msq
);
1985 kfree(msq
->security
);
1986 msq
->security
= NULL
;
1989 int security_msg_queue_associate(struct kern_ipc_perm
*msq
, int msqflg
)
1991 return call_int_hook(msg_queue_associate
, 0, msq
, msqflg
);
1994 int security_msg_queue_msgctl(struct kern_ipc_perm
*msq
, int cmd
)
1996 return call_int_hook(msg_queue_msgctl
, 0, msq
, cmd
);
1999 int security_msg_queue_msgsnd(struct kern_ipc_perm
*msq
,
2000 struct msg_msg
*msg
, int msqflg
)
2002 return call_int_hook(msg_queue_msgsnd
, 0, msq
, msg
, msqflg
);
2005 int security_msg_queue_msgrcv(struct kern_ipc_perm
*msq
, struct msg_msg
*msg
,
2006 struct task_struct
*target
, long type
, int mode
)
2008 return call_int_hook(msg_queue_msgrcv
, 0, msq
, msg
, target
, type
, mode
);
2011 int security_shm_alloc(struct kern_ipc_perm
*shp
)
2013 int rc
= lsm_ipc_alloc(shp
);
2017 rc
= call_int_hook(shm_alloc_security
, 0, shp
);
2019 security_shm_free(shp
);
2023 void security_shm_free(struct kern_ipc_perm
*shp
)
2025 call_void_hook(shm_free_security
, shp
);
2026 kfree(shp
->security
);
2027 shp
->security
= NULL
;
2030 int security_shm_associate(struct kern_ipc_perm
*shp
, int shmflg
)
2032 return call_int_hook(shm_associate
, 0, shp
, shmflg
);
2035 int security_shm_shmctl(struct kern_ipc_perm
*shp
, int cmd
)
2037 return call_int_hook(shm_shmctl
, 0, shp
, cmd
);
2040 int security_shm_shmat(struct kern_ipc_perm
*shp
, char __user
*shmaddr
, int shmflg
)
2042 return call_int_hook(shm_shmat
, 0, shp
, shmaddr
, shmflg
);
2045 int security_sem_alloc(struct kern_ipc_perm
*sma
)
2047 int rc
= lsm_ipc_alloc(sma
);
2051 rc
= call_int_hook(sem_alloc_security
, 0, sma
);
2053 security_sem_free(sma
);
2057 void security_sem_free(struct kern_ipc_perm
*sma
)
2059 call_void_hook(sem_free_security
, sma
);
2060 kfree(sma
->security
);
2061 sma
->security
= NULL
;
2064 int security_sem_associate(struct kern_ipc_perm
*sma
, int semflg
)
2066 return call_int_hook(sem_associate
, 0, sma
, semflg
);
2069 int security_sem_semctl(struct kern_ipc_perm
*sma
, int cmd
)
2071 return call_int_hook(sem_semctl
, 0, sma
, cmd
);
2074 int security_sem_semop(struct kern_ipc_perm
*sma
, struct sembuf
*sops
,
2075 unsigned nsops
, int alter
)
2077 return call_int_hook(sem_semop
, 0, sma
, sops
, nsops
, alter
);
2080 void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
)
2082 if (unlikely(inode
&& IS_PRIVATE(inode
)))
2084 call_void_hook(d_instantiate
, dentry
, inode
);
2086 EXPORT_SYMBOL(security_d_instantiate
);
2088 int security_getprocattr(struct task_struct
*p
, const char *lsm
, char *name
,
2091 struct security_hook_list
*hp
;
2093 hlist_for_each_entry(hp
, &security_hook_heads
.getprocattr
, list
) {
2094 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsmid
->lsm
))
2096 return hp
->hook
.getprocattr(p
, name
, value
);
2098 return LSM_RET_DEFAULT(getprocattr
);
2101 int security_setprocattr(const char *lsm
, const char *name
, void *value
,
2104 struct security_hook_list
*hp
;
2106 hlist_for_each_entry(hp
, &security_hook_heads
.setprocattr
, list
) {
2107 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsmid
->lsm
))
2109 return hp
->hook
.setprocattr(name
, value
, size
);
2111 return LSM_RET_DEFAULT(setprocattr
);
2114 int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
)
2116 return call_int_hook(netlink_send
, 0, sk
, skb
);
2119 int security_ismaclabel(const char *name
)
2121 return call_int_hook(ismaclabel
, 0, name
);
2123 EXPORT_SYMBOL(security_ismaclabel
);
2125 int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
)
2127 struct security_hook_list
*hp
;
2131 * Currently, only one LSM can implement secid_to_secctx (i.e this
2132 * LSM hook is not "stackable").
2134 hlist_for_each_entry(hp
, &security_hook_heads
.secid_to_secctx
, list
) {
2135 rc
= hp
->hook
.secid_to_secctx(secid
, secdata
, seclen
);
2136 if (rc
!= LSM_RET_DEFAULT(secid_to_secctx
))
2140 return LSM_RET_DEFAULT(secid_to_secctx
);
2142 EXPORT_SYMBOL(security_secid_to_secctx
);
2144 int security_secctx_to_secid(const char *secdata
, u32 seclen
, u32
*secid
)
2147 return call_int_hook(secctx_to_secid
, 0, secdata
, seclen
, secid
);
2149 EXPORT_SYMBOL(security_secctx_to_secid
);
2151 void security_release_secctx(char *secdata
, u32 seclen
)
2153 call_void_hook(release_secctx
, secdata
, seclen
);
2155 EXPORT_SYMBOL(security_release_secctx
);
2157 void security_inode_invalidate_secctx(struct inode
*inode
)
2159 call_void_hook(inode_invalidate_secctx
, inode
);
2161 EXPORT_SYMBOL(security_inode_invalidate_secctx
);
2163 int security_inode_notifysecctx(struct inode
*inode
, void *ctx
, u32 ctxlen
)
2165 return call_int_hook(inode_notifysecctx
, 0, inode
, ctx
, ctxlen
);
2167 EXPORT_SYMBOL(security_inode_notifysecctx
);
2169 int security_inode_setsecctx(struct dentry
*dentry
, void *ctx
, u32 ctxlen
)
2171 return call_int_hook(inode_setsecctx
, 0, dentry
, ctx
, ctxlen
);
2173 EXPORT_SYMBOL(security_inode_setsecctx
);
2175 int security_inode_getsecctx(struct inode
*inode
, void **ctx
, u32
*ctxlen
)
2177 return call_int_hook(inode_getsecctx
, -EOPNOTSUPP
, inode
, ctx
, ctxlen
);
2179 EXPORT_SYMBOL(security_inode_getsecctx
);
2181 #ifdef CONFIG_WATCH_QUEUE
2182 int security_post_notification(const struct cred
*w_cred
,
2183 const struct cred
*cred
,
2184 struct watch_notification
*n
)
2186 return call_int_hook(post_notification
, 0, w_cred
, cred
, n
);
2188 #endif /* CONFIG_WATCH_QUEUE */
2190 #ifdef CONFIG_KEY_NOTIFICATIONS
2191 int security_watch_key(struct key
*key
)
2193 return call_int_hook(watch_key
, 0, key
);
2197 #ifdef CONFIG_SECURITY_NETWORK
2199 int security_unix_stream_connect(struct sock
*sock
, struct sock
*other
, struct sock
*newsk
)
2201 return call_int_hook(unix_stream_connect
, 0, sock
, other
, newsk
);
2203 EXPORT_SYMBOL(security_unix_stream_connect
);
2205 int security_unix_may_send(struct socket
*sock
, struct socket
*other
)
2207 return call_int_hook(unix_may_send
, 0, sock
, other
);
2209 EXPORT_SYMBOL(security_unix_may_send
);
2211 int security_socket_create(int family
, int type
, int protocol
, int kern
)
2213 return call_int_hook(socket_create
, 0, family
, type
, protocol
, kern
);
2216 int security_socket_post_create(struct socket
*sock
, int family
,
2217 int type
, int protocol
, int kern
)
2219 return call_int_hook(socket_post_create
, 0, sock
, family
, type
,
2223 int security_socket_socketpair(struct socket
*socka
, struct socket
*sockb
)
2225 return call_int_hook(socket_socketpair
, 0, socka
, sockb
);
2227 EXPORT_SYMBOL(security_socket_socketpair
);
2229 int security_socket_bind(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2231 return call_int_hook(socket_bind
, 0, sock
, address
, addrlen
);
2234 int security_socket_connect(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2236 return call_int_hook(socket_connect
, 0, sock
, address
, addrlen
);
2239 int security_socket_listen(struct socket
*sock
, int backlog
)
2241 return call_int_hook(socket_listen
, 0, sock
, backlog
);
2244 int security_socket_accept(struct socket
*sock
, struct socket
*newsock
)
2246 return call_int_hook(socket_accept
, 0, sock
, newsock
);
2249 int security_socket_sendmsg(struct socket
*sock
, struct msghdr
*msg
, int size
)
2251 return call_int_hook(socket_sendmsg
, 0, sock
, msg
, size
);
2254 int security_socket_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
2255 int size
, int flags
)
2257 return call_int_hook(socket_recvmsg
, 0, sock
, msg
, size
, flags
);
2260 int security_socket_getsockname(struct socket
*sock
)
2262 return call_int_hook(socket_getsockname
, 0, sock
);
2265 int security_socket_getpeername(struct socket
*sock
)
2267 return call_int_hook(socket_getpeername
, 0, sock
);
2270 int security_socket_getsockopt(struct socket
*sock
, int level
, int optname
)
2272 return call_int_hook(socket_getsockopt
, 0, sock
, level
, optname
);
2275 int security_socket_setsockopt(struct socket
*sock
, int level
, int optname
)
2277 return call_int_hook(socket_setsockopt
, 0, sock
, level
, optname
);
2280 int security_socket_shutdown(struct socket
*sock
, int how
)
2282 return call_int_hook(socket_shutdown
, 0, sock
, how
);
2285 int security_sock_rcv_skb(struct sock
*sk
, struct sk_buff
*skb
)
2287 return call_int_hook(socket_sock_rcv_skb
, 0, sk
, skb
);
2289 EXPORT_SYMBOL(security_sock_rcv_skb
);
2291 int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2292 int __user
*optlen
, unsigned len
)
2294 return call_int_hook(socket_getpeersec_stream
, -ENOPROTOOPT
, sock
,
2295 optval
, optlen
, len
);
2298 int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
)
2300 return call_int_hook(socket_getpeersec_dgram
, -ENOPROTOOPT
, sock
,
2303 EXPORT_SYMBOL(security_socket_getpeersec_dgram
);
2305 int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
)
2307 int rc
= lsm_sock_alloc(sk
, priority
);
2311 rc
= call_int_hook(sk_alloc_security
, 0, sk
, family
, priority
);
2313 security_sk_free(sk
);
2317 void security_sk_free(struct sock
*sk
)
2319 call_void_hook(sk_free_security
, sk
);
2320 kfree(sk
->sk_security
);
2321 sk
->sk_security
= NULL
;
2324 void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
)
2326 call_void_hook(sk_clone_security
, sk
, newsk
);
2328 EXPORT_SYMBOL(security_sk_clone
);
2330 void security_sk_classify_flow(struct sock
*sk
, struct flowi_common
*flic
)
2332 call_void_hook(sk_getsecid
, sk
, &flic
->flowic_secid
);
2334 EXPORT_SYMBOL(security_sk_classify_flow
);
2336 void security_req_classify_flow(const struct request_sock
*req
,
2337 struct flowi_common
*flic
)
2339 call_void_hook(req_classify_flow
, req
, flic
);
2341 EXPORT_SYMBOL(security_req_classify_flow
);
2343 void security_sock_graft(struct sock
*sk
, struct socket
*parent
)
2345 call_void_hook(sock_graft
, sk
, parent
);
2347 EXPORT_SYMBOL(security_sock_graft
);
2349 int security_inet_conn_request(const struct sock
*sk
,
2350 struct sk_buff
*skb
, struct request_sock
*req
)
2352 return call_int_hook(inet_conn_request
, 0, sk
, skb
, req
);
2354 EXPORT_SYMBOL(security_inet_conn_request
);
2356 void security_inet_csk_clone(struct sock
*newsk
,
2357 const struct request_sock
*req
)
2359 call_void_hook(inet_csk_clone
, newsk
, req
);
2362 void security_inet_conn_established(struct sock
*sk
,
2363 struct sk_buff
*skb
)
2365 call_void_hook(inet_conn_established
, sk
, skb
);
2367 EXPORT_SYMBOL(security_inet_conn_established
);
2369 int security_secmark_relabel_packet(u32 secid
)
2371 return call_int_hook(secmark_relabel_packet
, 0, secid
);
2373 EXPORT_SYMBOL(security_secmark_relabel_packet
);
2375 void security_secmark_refcount_inc(void)
2377 call_void_hook(secmark_refcount_inc
);
2379 EXPORT_SYMBOL(security_secmark_refcount_inc
);
2381 void security_secmark_refcount_dec(void)
2383 call_void_hook(secmark_refcount_dec
);
2385 EXPORT_SYMBOL(security_secmark_refcount_dec
);
2387 int security_tun_dev_alloc_security(void **security
)
2389 return call_int_hook(tun_dev_alloc_security
, 0, security
);
2391 EXPORT_SYMBOL(security_tun_dev_alloc_security
);
2393 void security_tun_dev_free_security(void *security
)
2395 call_void_hook(tun_dev_free_security
, security
);
2397 EXPORT_SYMBOL(security_tun_dev_free_security
);
2399 int security_tun_dev_create(void)
2401 return call_int_hook(tun_dev_create
, 0);
2403 EXPORT_SYMBOL(security_tun_dev_create
);
2405 int security_tun_dev_attach_queue(void *security
)
2407 return call_int_hook(tun_dev_attach_queue
, 0, security
);
2409 EXPORT_SYMBOL(security_tun_dev_attach_queue
);
2411 int security_tun_dev_attach(struct sock
*sk
, void *security
)
2413 return call_int_hook(tun_dev_attach
, 0, sk
, security
);
2415 EXPORT_SYMBOL(security_tun_dev_attach
);
2417 int security_tun_dev_open(void *security
)
2419 return call_int_hook(tun_dev_open
, 0, security
);
2421 EXPORT_SYMBOL(security_tun_dev_open
);
2423 int security_sctp_assoc_request(struct sctp_endpoint
*ep
, struct sk_buff
*skb
)
2425 return call_int_hook(sctp_assoc_request
, 0, ep
, skb
);
2427 EXPORT_SYMBOL(security_sctp_assoc_request
);
2429 int security_sctp_bind_connect(struct sock
*sk
, int optname
,
2430 struct sockaddr
*address
, int addrlen
)
2432 return call_int_hook(sctp_bind_connect
, 0, sk
, optname
,
2435 EXPORT_SYMBOL(security_sctp_bind_connect
);
2437 void security_sctp_sk_clone(struct sctp_endpoint
*ep
, struct sock
*sk
,
2440 call_void_hook(sctp_sk_clone
, ep
, sk
, newsk
);
2442 EXPORT_SYMBOL(security_sctp_sk_clone
);
2444 #endif /* CONFIG_SECURITY_NETWORK */
2446 #ifdef CONFIG_SECURITY_INFINIBAND
2448 int security_ib_pkey_access(void *sec
, u64 subnet_prefix
, u16 pkey
)
2450 return call_int_hook(ib_pkey_access
, 0, sec
, subnet_prefix
, pkey
);
2452 EXPORT_SYMBOL(security_ib_pkey_access
);
2454 int security_ib_endport_manage_subnet(void *sec
, const char *dev_name
, u8 port_num
)
2456 return call_int_hook(ib_endport_manage_subnet
, 0, sec
, dev_name
, port_num
);
2458 EXPORT_SYMBOL(security_ib_endport_manage_subnet
);
2460 int security_ib_alloc_security(void **sec
)
2462 return call_int_hook(ib_alloc_security
, 0, sec
);
2464 EXPORT_SYMBOL(security_ib_alloc_security
);
2466 void security_ib_free_security(void *sec
)
2468 call_void_hook(ib_free_security
, sec
);
2470 EXPORT_SYMBOL(security_ib_free_security
);
2471 #endif /* CONFIG_SECURITY_INFINIBAND */
2473 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2475 int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
,
2476 struct xfrm_user_sec_ctx
*sec_ctx
,
2479 return call_int_hook(xfrm_policy_alloc_security
, 0, ctxp
, sec_ctx
, gfp
);
2481 EXPORT_SYMBOL(security_xfrm_policy_alloc
);
2483 int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old_ctx
,
2484 struct xfrm_sec_ctx
**new_ctxp
)
2486 return call_int_hook(xfrm_policy_clone_security
, 0, old_ctx
, new_ctxp
);
2489 void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
)
2491 call_void_hook(xfrm_policy_free_security
, ctx
);
2493 EXPORT_SYMBOL(security_xfrm_policy_free
);
2495 int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
)
2497 return call_int_hook(xfrm_policy_delete_security
, 0, ctx
);
2500 int security_xfrm_state_alloc(struct xfrm_state
*x
,
2501 struct xfrm_user_sec_ctx
*sec_ctx
)
2503 return call_int_hook(xfrm_state_alloc
, 0, x
, sec_ctx
);
2505 EXPORT_SYMBOL(security_xfrm_state_alloc
);
2507 int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2508 struct xfrm_sec_ctx
*polsec
, u32 secid
)
2510 return call_int_hook(xfrm_state_alloc_acquire
, 0, x
, polsec
, secid
);
2513 int security_xfrm_state_delete(struct xfrm_state
*x
)
2515 return call_int_hook(xfrm_state_delete_security
, 0, x
);
2517 EXPORT_SYMBOL(security_xfrm_state_delete
);
2519 void security_xfrm_state_free(struct xfrm_state
*x
)
2521 call_void_hook(xfrm_state_free_security
, x
);
2524 int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
)
2526 return call_int_hook(xfrm_policy_lookup
, 0, ctx
, fl_secid
);
2529 int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2530 struct xfrm_policy
*xp
,
2531 const struct flowi_common
*flic
)
2533 struct security_hook_list
*hp
;
2534 int rc
= LSM_RET_DEFAULT(xfrm_state_pol_flow_match
);
2537 * Since this function is expected to return 0 or 1, the judgment
2538 * becomes difficult if multiple LSMs supply this call. Fortunately,
2539 * we can use the first LSM's judgment because currently only SELinux
2540 * supplies this call.
2542 * For speed optimization, we explicitly break the loop rather than
2545 hlist_for_each_entry(hp
, &security_hook_heads
.xfrm_state_pol_flow_match
,
2547 rc
= hp
->hook
.xfrm_state_pol_flow_match(x
, xp
, flic
);
2553 int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
)
2555 return call_int_hook(xfrm_decode_session
, 0, skb
, secid
, 1);
2558 void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi_common
*flic
)
2560 int rc
= call_int_hook(xfrm_decode_session
, 0, skb
, &flic
->flowic_secid
,
2565 EXPORT_SYMBOL(security_skb_classify_flow
);
2567 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2571 int security_key_alloc(struct key
*key
, const struct cred
*cred
,
2572 unsigned long flags
)
2574 return call_int_hook(key_alloc
, 0, key
, cred
, flags
);
2577 void security_key_free(struct key
*key
)
2579 call_void_hook(key_free
, key
);
2582 int security_key_permission(key_ref_t key_ref
, const struct cred
*cred
,
2583 enum key_need_perm need_perm
)
2585 return call_int_hook(key_permission
, 0, key_ref
, cred
, need_perm
);
2588 int security_key_getsecurity(struct key
*key
, char **_buffer
)
2591 return call_int_hook(key_getsecurity
, 0, key
, _buffer
);
2594 #endif /* CONFIG_KEYS */
2598 int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
, void **lsmrule
)
2600 struct security_hook_list
*hp
;
2601 bool one_is_good
= false;
2605 hlist_for_each_entry(hp
, &security_hook_heads
.audit_rule_init
, list
) {
2606 if (WARN_ON(hp
->lsmid
->slot
< 0 || hp
->lsmid
->slot
>= lsm_slot
))
2608 trc
= hp
->hook
.audit_rule_init(field
, op
, rulestr
,
2609 &lsmrule
[hp
->lsmid
->slot
]);
2620 int security_audit_rule_known(struct audit_krule
*krule
)
2622 return call_int_hook(audit_rule_known
, 0, krule
);
2625 void security_audit_rule_free(void **lsmrule
)
2627 struct security_hook_list
*hp
;
2629 hlist_for_each_entry(hp
, &security_hook_heads
.audit_rule_free
, list
) {
2630 if (WARN_ON(hp
->lsmid
->slot
< 0 || hp
->lsmid
->slot
>= lsm_slot
))
2632 if (lsmrule
[hp
->lsmid
->slot
] == NULL
)
2634 hp
->hook
.audit_rule_free(lsmrule
[hp
->lsmid
->slot
]);
2638 int security_audit_rule_match(struct lsmblob
*blob
, u32 field
, u32 op
,
2641 struct security_hook_list
*hp
;
2644 hlist_for_each_entry(hp
, &security_hook_heads
.audit_rule_match
, list
) {
2645 if (WARN_ON(hp
->lsmid
->slot
< 0 || hp
->lsmid
->slot
>= lsm_slot
))
2647 if (lsmrule
[hp
->lsmid
->slot
] == NULL
)
2649 rc
= hp
->hook
.audit_rule_match(blob
->secid
[hp
->lsmid
->slot
],
2651 &lsmrule
[hp
->lsmid
->slot
]);
2657 #endif /* CONFIG_AUDIT */
2659 #ifdef CONFIG_BPF_SYSCALL
2660 int security_bpf(int cmd
, union bpf_attr
*attr
, unsigned int size
)
2662 return call_int_hook(bpf
, 0, cmd
, attr
, size
);
2664 int security_bpf_map(struct bpf_map
*map
, fmode_t fmode
)
2666 return call_int_hook(bpf_map
, 0, map
, fmode
);
2668 int security_bpf_prog(struct bpf_prog
*prog
)
2670 return call_int_hook(bpf_prog
, 0, prog
);
2672 int security_bpf_map_alloc(struct bpf_map
*map
)
2674 return call_int_hook(bpf_map_alloc_security
, 0, map
);
2676 int security_bpf_prog_alloc(struct bpf_prog_aux
*aux
)
2678 return call_int_hook(bpf_prog_alloc_security
, 0, aux
);
2680 void security_bpf_map_free(struct bpf_map
*map
)
2682 call_void_hook(bpf_map_free_security
, map
);
2684 void security_bpf_prog_free(struct bpf_prog_aux
*aux
)
2686 call_void_hook(bpf_prog_free_security
, aux
);
2688 #endif /* CONFIG_BPF_SYSCALL */
2690 int security_locked_down(enum lockdown_reason what
)
2692 return call_int_hook(locked_down
, 0, what
);
2694 EXPORT_SYMBOL(security_locked_down
);
2696 #ifdef CONFIG_PERF_EVENTS
2697 int security_perf_event_open(struct perf_event_attr
*attr
, int type
)
2699 return call_int_hook(perf_event_open
, 0, attr
, type
);
2702 int security_perf_event_alloc(struct perf_event
*event
)
2704 return call_int_hook(perf_event_alloc
, 0, event
);
2707 void security_perf_event_free(struct perf_event
*event
)
2709 call_void_hook(perf_event_free
, event
);
2712 int security_perf_event_read(struct perf_event
*event
)
2714 return call_int_hook(perf_event_read
, 0, event
);
2717 int security_perf_event_write(struct perf_event
*event
)
2719 return call_int_hook(perf_event_write
, 0, event
);
2721 #endif /* CONFIG_PERF_EVENTS */