2 * Security plug functions
4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2016 Mellanox Technologies
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
15 #include <linux/bpf.h>
16 #include <linux/capability.h>
17 #include <linux/dcache.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/kernel.h>
21 #include <linux/lsm_hooks.h>
22 #include <linux/integrity.h>
23 #include <linux/ima.h>
24 #include <linux/evm.h>
25 #include <linux/fsnotify.h>
26 #include <linux/mman.h>
27 #include <linux/mount.h>
28 #include <linux/personality.h>
29 #include <linux/backing-dev.h>
30 #include <linux/string.h>
31 #include <linux/msg.h>
32 #include <linux/prctl.h>
36 #define MAX_LSM_EVM_XATTR 2
38 /* Maximum number of letters for an LSM name string */
39 #define SECURITY_NAME_MAX 10
40 #define SECURITY_CHOSEN_NAMES_MAX (SECURITY_NAME_MAX * LSM_MAX_MAJOR)
41 #define MODULE_STACK "(stacking)"
43 struct security_hook_heads security_hook_heads __lsm_ro_after_init
;
44 static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain
);
46 static struct kmem_cache
*lsm_file_cache
;
47 static struct kmem_cache
*lsm_inode_cache
;
52 * If stacking is enabled the task blob will always
53 * include an indicator of what security module data
54 * should be displayed. This is set with PR_SET_DISPLAY_LSM.
56 static struct lsm_blob_sizes blob_sizes
= {
57 #ifdef CONFIG_SECURITY_STACKING
58 .lbs_task
= SECURITY_NAME_MAX
+ 6,
62 /* Boot-time LSM user choice */
63 static __initdata
char chosen_lsms
[SECURITY_CHOSEN_NAMES_MAX
+ 1] =
64 #ifdef CONFIG_SECURITY_STACKING
67 CONFIG_DEFAULT_SECURITY
;
69 static __initdata
char chosen_display_lsm
[SECURITY_NAME_MAX
+ 1]
70 #ifdef CONFIG_SECURITY_STACKING
71 = CONFIG_SECURITY_DEFAULT_DISPLAY_NAME
74 static char default_display_lsm
[SECURITY_NAME_MAX
+ 1];
76 static void __init
do_security_initcalls(void)
79 call
= __security_initcall_start
;
80 while (call
< __security_initcall_end
) {
87 * security_init - initializes the security framework
89 * This should be called early in the kernel initialization sequence.
91 int __init
security_init(void)
94 struct list_head
*list
= (struct list_head
*) &security_hook_heads
;
96 for (i
= 0; i
< sizeof(security_hook_heads
) / sizeof(struct list_head
);
98 INIT_LIST_HEAD(&list
[i
]);
99 pr_info("Security Framework initialized\n");
102 * Load minor LSMs, with the capability module always first.
104 capability_add_hooks();
109 * The first call to a module specific init function
110 * updates the blob size requirements.
112 do_security_initcalls();
115 * Create any kmem_caches needed for blobs
117 if (blob_sizes
.lbs_file
)
118 lsm_file_cache
= kmem_cache_create("lsm_file_cache",
119 blob_sizes
.lbs_file
, 0,
121 if (blob_sizes
.lbs_inode
)
122 lsm_inode_cache
= kmem_cache_create("lsm_inode_cache",
123 blob_sizes
.lbs_inode
, 0,
126 * The second call to a module specific init function
127 * adds hooks to the hook lists and does any other early
128 * initializations required.
130 do_security_initcalls();
132 #ifdef CONFIG_SECURITY_LSM_DEBUG
133 pr_info("LSM: cred blob size = %d\n", blob_sizes
.lbs_cred
);
134 pr_info("LSM: file blob size = %d\n", blob_sizes
.lbs_file
);
135 pr_info("LSM: inode blob size = %d\n", blob_sizes
.lbs_inode
);
136 pr_info("LSM: ipc blob size = %d\n", blob_sizes
.lbs_ipc
);
138 pr_info("LSM: key blob size = %d\n", blob_sizes
.lbs_key
);
139 #endif /* CONFIG_KEYS */
140 pr_info("LSM: msg_msg blob size = %d\n", blob_sizes
.lbs_msg_msg
);
141 pr_info("LSM: sock blob size = %d\n", blob_sizes
.lbs_sock
);
142 pr_info("LSM: superblock blob size = %d\n", blob_sizes
.lbs_superblock
);
143 pr_info("LSM: task blob size = %d\n", blob_sizes
.lbs_task
);
144 #endif /* CONFIG_SECURITY_LSM_DEBUG */
149 /* Save user chosen LSM */
150 static int __init
choose_lsm(char *str
)
152 strncpy(chosen_lsms
, str
, SECURITY_CHOSEN_NAMES_MAX
);
153 pr_info("LSM: command line set '%s' security module(s).\n",
157 __setup("security=", choose_lsm
);
159 static int __init
choose_display_lsm(char *str
)
161 strncpy(chosen_display_lsm
, str
, SECURITY_NAME_MAX
);
162 pr_info("LSM: command line set default display lsm %s'\n",
166 __setup("security.display=", choose_display_lsm
);
168 static bool match_last_lsm(const char *list
, const char *lsm
)
172 if (WARN_ON(!list
|| !lsm
))
174 last
= strrchr(list
, ',');
176 /* Pass the comma, strcmp() will check for '\0' */
180 return !strcmp(last
, lsm
);
183 static int lsm_append(char *new, char **result
)
187 if (*result
== NULL
) {
188 *result
= kstrdup(new, GFP_KERNEL
);
192 /* Check if it is the last registered name */
193 if (match_last_lsm(*result
, new))
195 cp
= kasprintf(GFP_KERNEL
, "%s,%s", *result
, new);
205 * security_module_enable - Load given security module on boot ?
206 * @module: the name of the module
207 * @stacked: indicates that the module wants to be stacked
209 * Each LSM must pass this method before registering its own operations
210 * to avoid security registration races. This method may also be used
211 * to check if your LSM is currently loaded during kernel initialization.
217 * - The passed LSM is the one chosen by user at boot time,
218 * - or the passed LSM is configured as the default and the user did not
219 * choose an alternate LSM at boot time.
221 * Otherwise, return false.
223 #ifdef CONFIG_SECURITY_STACKING
224 static bool __init
cmp_lsms(const char *lsm
)
226 const char *str
= chosen_lsms
;
228 int len
= strlen(lsm
);
230 if (len
> SECURITY_NAME_MAX
) {
231 pr_info("LSM: security module name '%s' exceeds limit\n", lsm
);
234 for (split
= strchr(str
, ','); split
; split
= strchr(str
, ',')) {
235 if ((len
== split
- str
) && !strncmp(lsm
, str
, split
- str
))
239 if ((len
== strlen(str
)) && !strncmp(lsm
, str
, strlen(str
)))
245 bool __init
security_module_enable(const char *lsm
, const bool stacked
)
247 #ifdef CONFIG_SECURITY_STACKING
249 * Module defined on the command line security=XXXX
251 if (strcmp(chosen_lsms
, MODULE_STACK
)) {
253 /* set to first LSM registered and then override */
254 if (!*default_display_lsm
)
255 strcpy(default_display_lsm
, lsm
);
256 else if (*chosen_display_lsm
&& !strcmp(chosen_display_lsm
, lsm
)) {
257 strcpy(default_display_lsm
, lsm
);
258 pr_info("LSM: default display lsm '%s'\n", default_display_lsm
);
265 * Module configured as stacked.
267 if (stacked
&& !*default_display_lsm
)
268 strcpy(default_display_lsm
, lsm
);
269 else if (stacked
&& *chosen_display_lsm
&& !strcmp(chosen_display_lsm
, lsm
)) {
270 strcpy(default_display_lsm
, lsm
);
271 pr_info("LSM: default display lsm '%s'\n", default_display_lsm
);
276 if (strcmp(lsm
, chosen_lsms
) == 0) {
277 strcpy(default_display_lsm
, lsm
);
285 * Keep the order of major modules for mapping secids.
287 static int lsm_next_major
;
290 * security_add_hooks - Add a modules hooks to the hook lists.
291 * @hooks: the hooks to add
292 * @count: the number of hooks to add
293 * @lsm: the name of the security module
295 * Each LSM has to register its hooks with the infrastructure.
297 void __init
security_add_hooks(struct security_hook_list
*hooks
, int count
,
301 int lsm_index
= lsm_next_major
++;
303 #ifdef CONFIG_SECURITY_LSM_DEBUG
304 pr_info("LSM: Security module %s gets index %d\n", lsm
, lsm_index
);
306 for (i
= 0; i
< count
; i
++) {
308 hooks
[i
].lsm_index
= lsm_index
;
309 list_add_tail_rcu(&hooks
[i
].list
, hooks
[i
].head
);
311 if (lsm_append(lsm
, &lsm_names
) < 0)
312 panic("%s - Cannot get early memory.\n", __func__
);
315 int call_lsm_notifier(enum lsm_event event
, void *data
)
317 return atomic_notifier_call_chain(&lsm_notifier_chain
, event
, data
);
319 EXPORT_SYMBOL(call_lsm_notifier
);
321 int register_lsm_notifier(struct notifier_block
*nb
)
323 return atomic_notifier_chain_register(&lsm_notifier_chain
, nb
);
325 EXPORT_SYMBOL(register_lsm_notifier
);
327 int unregister_lsm_notifier(struct notifier_block
*nb
)
329 return atomic_notifier_chain_unregister(&lsm_notifier_chain
, nb
);
331 EXPORT_SYMBOL(unregister_lsm_notifier
);
334 * lsm_cred_alloc - allocate a composite cred blob
335 * @cred: the cred that needs a blob
336 * @gfp: allocation type
338 * Allocate the cred blob for all the modules
340 * Returns 0, or -ENOMEM if memory can't be allocated.
342 int lsm_cred_alloc(struct cred
*cred
, gfp_t gfp
)
344 if (blob_sizes
.lbs_cred
== 0) {
345 cred
->security
= NULL
;
349 cred
->security
= kzalloc(blob_sizes
.lbs_cred
, gfp
);
350 if (cred
->security
== NULL
)
356 * lsm_early_cred - during initialization allocate a composite cred blob
357 * @cred: the cred that needs a blob
359 * Allocate the cred blob for all the modules if it's not already there
361 void lsm_early_cred(struct cred
*cred
)
366 panic("%s: NULL cred.\n", __func__
);
367 if (cred
->security
!= NULL
)
369 rc
= lsm_cred_alloc(cred
, GFP_KERNEL
);
371 panic("%s: Early cred alloc failed.\n", __func__
);
374 static void __init
lsm_set_size(int *need
, int *lbs
)
386 * security_add_blobs - Report blob sizes
387 * @needed: the size of blobs needed by the module
389 * Each LSM has to register its blobs with the infrastructure.
390 * The "needed" data tells the infrastructure how much memory
391 * the module requires for each of its blobs. On return the
392 * structure is filled with the offset that module should use
393 * from the blob pointer.
395 void __init
security_add_blobs(struct lsm_blob_sizes
*needed
)
397 lsm_set_size(&needed
->lbs_cred
, &blob_sizes
.lbs_cred
);
398 lsm_set_size(&needed
->lbs_file
, &blob_sizes
.lbs_file
);
399 lsm_set_size(&needed
->lbs_ipc
, &blob_sizes
.lbs_ipc
);
400 lsm_set_size(&needed
->lbs_key
, &blob_sizes
.lbs_key
);
401 lsm_set_size(&needed
->lbs_msg_msg
, &blob_sizes
.lbs_msg_msg
);
402 lsm_set_size(&needed
->lbs_sock
, &blob_sizes
.lbs_sock
);
403 lsm_set_size(&needed
->lbs_superblock
, &blob_sizes
.lbs_superblock
);
404 lsm_set_size(&needed
->lbs_task
, &blob_sizes
.lbs_task
);
406 * The inode blob gets an rcu_head in addition to
407 * what the modules might need.
409 if (needed
->lbs_inode
&& blob_sizes
.lbs_inode
== 0)
410 blob_sizes
.lbs_inode
= sizeof(struct rcu_head
);
411 lsm_set_size(&needed
->lbs_inode
, &blob_sizes
.lbs_inode
);
415 * lsm_file_alloc - allocate a composite file blob
416 * @file: the file that needs a blob
418 * Allocate the file blob for all the modules
420 * Returns 0, or -ENOMEM if memory can't be allocated.
422 int lsm_file_alloc(struct file
*file
)
424 if (!lsm_file_cache
) {
425 file
->f_security
= NULL
;
429 file
->f_security
= kmem_cache_zalloc(lsm_file_cache
, GFP_KERNEL
);
430 if (file
->f_security
== NULL
)
435 #ifdef CONFIG_SECURITY_STACKING
436 static inline char *lsm_of_task(struct task_struct
*task
)
438 #ifdef CONFIG_SECURITY_LSM_DEBUG
439 if (task
->security
== NULL
)
440 pr_info("%s: task has no lsm name.\n", __func__
);
442 return task
->security
;
447 * lsm_task_alloc - allocate a composite task blob
448 * @task: the task that needs a blob
450 * Allocate the task blob for all the modules
452 * Returns 0, or -ENOMEM if memory can't be allocated.
454 int lsm_task_alloc(struct task_struct
*task
)
456 if (blob_sizes
.lbs_task
== 0) {
457 task
->security
= NULL
;
461 task
->security
= kzalloc(blob_sizes
.lbs_task
, GFP_KERNEL
);
462 if (task
->security
== NULL
)
465 /* inherit current display lsm */
466 #ifdef CONFIG_SECURITY_STACKING
467 if (current
->security
)
468 strcpy(task
->security
, lsm_of_task(current
));
470 strcpy(task
->security
, default_display_lsm
);
476 * lsm_inode_alloc - allocate a composite inode blob
477 * @inode: the inode that needs a blob
479 * Allocate the inode blob for all the modules
481 * Returns 0, or -ENOMEM if memory can't be allocated.
483 int lsm_inode_alloc(struct inode
*inode
)
485 if (!lsm_inode_cache
) {
486 inode
->i_security
= NULL
;
490 inode
->i_security
= kmem_cache_zalloc(lsm_inode_cache
, GFP_KERNEL
);
491 if (inode
->i_security
== NULL
)
497 * lsm_early_inode - during initialization allocate a composite inode blob
498 * @inode: the inode that needs a blob
500 * Allocate the inode blob for all the modules if it's not already there
502 void lsm_early_inode(struct inode
*inode
)
507 panic("%s: NULL inode.\n", __func__
);
508 if (inode
->i_security
!= NULL
)
510 rc
= lsm_inode_alloc(inode
);
512 panic("%s: Early inode alloc failed.\n", __func__
);
516 * lsm_ipc_alloc - allocate a composite ipc blob
517 * @kip: the ipc that needs a blob
519 * Allocate the ipc blob for all the modules
521 * Returns 0, or -ENOMEM if memory can't be allocated.
523 int lsm_ipc_alloc(struct kern_ipc_perm
*kip
)
525 if (blob_sizes
.lbs_ipc
== 0) {
526 kip
->security
= NULL
;
530 kip
->security
= kzalloc(blob_sizes
.lbs_ipc
, GFP_KERNEL
);
531 if (kip
->security
== NULL
)
538 * lsm_key_alloc - allocate a composite key blob
539 * @key: the key that needs a blob
541 * Allocate the key blob for all the modules
543 * Returns 0, or -ENOMEM if memory can't be allocated.
545 int lsm_key_alloc(struct key
*key
)
547 if (blob_sizes
.lbs_key
== 0) {
548 key
->security
= NULL
;
552 key
->security
= kzalloc(blob_sizes
.lbs_key
, GFP_KERNEL
);
553 if (key
->security
== NULL
)
557 #endif /* CONFIG_KEYS */
560 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
561 * @mp: the msg_msg that needs a blob
563 * Allocate the ipc blob for all the modules
565 * Returns 0, or -ENOMEM if memory can't be allocated.
567 int lsm_msg_msg_alloc(struct msg_msg
*mp
)
569 if (blob_sizes
.lbs_msg_msg
== 0) {
574 mp
->security
= kzalloc(blob_sizes
.lbs_msg_msg
, GFP_KERNEL
);
575 if (mp
->security
== NULL
)
581 * lsm_sock_alloc - allocate a composite sock blob
582 * @sock: the sock that needs a blob
583 * @priority: allocation mode
585 * Allocate the sock blob for all the modules
587 * Returns 0, or -ENOMEM if memory can't be allocated.
589 int lsm_sock_alloc(struct sock
*sock
, gfp_t priority
)
591 if (blob_sizes
.lbs_sock
== 0) {
592 sock
->sk_security
= NULL
;
596 sock
->sk_security
= kzalloc(blob_sizes
.lbs_sock
, priority
);
597 if (sock
->sk_security
== NULL
)
603 * lsm_superblock_alloc - allocate a composite superblock blob
604 * @sb: the superblock that needs a blob
606 * Allocate the superblock blob for all the modules
608 * Returns 0, or -ENOMEM if memory can't be allocated.
610 int lsm_superblock_alloc(struct super_block
*sb
)
612 if (blob_sizes
.lbs_superblock
== 0) {
613 sb
->s_security
= NULL
;
617 sb
->s_security
= kzalloc(blob_sizes
.lbs_superblock
, GFP_KERNEL
);
618 if (sb
->s_security
== NULL
)
624 * Hook list operation macros.
627 * This is a hook that does not return a value.
630 * This is a hook that returns a value.
633 #define call_void_hook(FUNC, ...) \
635 struct security_hook_list *P; \
637 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
638 P->hook.FUNC(__VA_ARGS__); \
641 #define call_int_hook(FUNC, IRC, ...) ({ \
644 struct security_hook_list *P; \
646 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
647 RC = P->hook.FUNC(__VA_ARGS__); \
655 /* Security operations */
657 int security_binder_set_context_mgr(struct task_struct
*mgr
)
659 return call_int_hook(binder_set_context_mgr
, 0, mgr
);
662 int security_binder_transaction(struct task_struct
*from
,
663 struct task_struct
*to
)
665 return call_int_hook(binder_transaction
, 0, from
, to
);
668 int security_binder_transfer_binder(struct task_struct
*from
,
669 struct task_struct
*to
)
671 return call_int_hook(binder_transfer_binder
, 0, from
, to
);
674 int security_binder_transfer_file(struct task_struct
*from
,
675 struct task_struct
*to
, struct file
*file
)
677 return call_int_hook(binder_transfer_file
, 0, from
, to
, file
);
680 int security_ptrace_access_check(struct task_struct
*child
, unsigned int mode
)
682 return call_int_hook(ptrace_access_check
, 0, child
, mode
);
685 int security_ptrace_traceme(struct task_struct
*parent
)
687 return call_int_hook(ptrace_traceme
, 0, parent
);
690 int security_capget(struct task_struct
*target
,
691 kernel_cap_t
*effective
,
692 kernel_cap_t
*inheritable
,
693 kernel_cap_t
*permitted
)
695 return call_int_hook(capget
, 0, target
,
696 effective
, inheritable
, permitted
);
699 int security_capset(struct cred
*new, const struct cred
*old
,
700 const kernel_cap_t
*effective
,
701 const kernel_cap_t
*inheritable
,
702 const kernel_cap_t
*permitted
)
704 return call_int_hook(capset
, 0, new, old
,
705 effective
, inheritable
, permitted
);
708 int security_capable(const struct cred
*cred
,
709 struct user_namespace
*ns
,
713 return call_int_hook(capable
, 0, cred
, ns
, cap
, opts
);
716 int security_quotactl(int cmds
, int type
, int id
, struct super_block
*sb
)
718 return call_int_hook(quotactl
, 0, cmds
, type
, id
, sb
);
721 int security_quota_on(struct dentry
*dentry
)
723 return call_int_hook(quota_on
, 0, dentry
);
726 int security_syslog(int type
)
728 return call_int_hook(syslog
, 0, type
);
731 int security_settime64(const struct timespec64
*ts
, const struct timezone
*tz
)
733 return call_int_hook(settime
, 0, ts
, tz
);
736 int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
)
738 struct security_hook_list
*hp
;
739 int cap_sys_admin
= 1;
743 * The module will respond with a positive value if
744 * it thinks the __vm_enough_memory() call should be
745 * made with the cap_sys_admin set. If all of the modules
746 * agree that it should be set it will. If any module
747 * thinks it should not be set it won't.
749 list_for_each_entry(hp
, &security_hook_heads
.vm_enough_memory
, list
) {
750 rc
= hp
->hook
.vm_enough_memory(mm
, pages
);
756 return __vm_enough_memory(mm
, pages
, cap_sys_admin
);
759 int security_bprm_set_creds(struct linux_binprm
*bprm
)
761 return call_int_hook(bprm_set_creds
, 0, bprm
);
764 int security_bprm_check(struct linux_binprm
*bprm
)
768 ret
= call_int_hook(bprm_check_security
, 0, bprm
);
771 return ima_bprm_check(bprm
);
774 void security_bprm_committing_creds(struct linux_binprm
*bprm
)
776 call_void_hook(bprm_committing_creds
, bprm
);
779 void security_bprm_committed_creds(struct linux_binprm
*bprm
)
781 call_void_hook(bprm_committed_creds
, bprm
);
784 int security_sb_alloc(struct super_block
*sb
)
786 int rc
= lsm_superblock_alloc(sb
);
790 rc
= call_int_hook(sb_alloc_security
, 0, sb
);
792 security_sb_free(sb
);
796 void security_sb_free(struct super_block
*sb
)
798 call_void_hook(sb_free_security
, sb
);
799 kfree(sb
->s_security
);
800 sb
->s_security
= NULL
;
803 int security_sb_copy_data(char *orig
, char *copy
)
805 return call_int_hook(sb_copy_data
, 0, orig
, copy
);
807 EXPORT_SYMBOL(security_sb_copy_data
);
809 int security_sb_remount(struct super_block
*sb
, void *data
)
811 return call_int_hook(sb_remount
, 0, sb
, data
);
814 int security_sb_kern_mount(struct super_block
*sb
, int flags
, void *data
)
816 return call_int_hook(sb_kern_mount
, 0, sb
, flags
, data
);
819 int security_sb_show_options(struct seq_file
*m
, struct super_block
*sb
)
821 return call_int_hook(sb_show_options
, 0, m
, sb
);
824 int security_sb_statfs(struct dentry
*dentry
)
826 return call_int_hook(sb_statfs
, 0, dentry
);
829 int security_sb_mount(const char *dev_name
, const struct path
*path
,
830 const char *type
, unsigned long flags
, void *data
)
832 return call_int_hook(sb_mount
, 0, dev_name
, path
, type
, flags
, data
);
835 int security_sb_umount(struct vfsmount
*mnt
, int flags
)
837 return call_int_hook(sb_umount
, 0, mnt
, flags
);
840 int security_sb_pivotroot(const struct path
*old_path
, const struct path
*new_path
)
842 return call_int_hook(sb_pivotroot
, 0, old_path
, new_path
);
845 int security_sb_set_mnt_opts(struct super_block
*sb
,
846 struct security_mnt_opts
*opts
,
847 unsigned long kern_flags
,
848 unsigned long *set_kern_flags
)
850 return call_int_hook(sb_set_mnt_opts
,
851 opts
->num_mnt_opts
? -EOPNOTSUPP
: 0, sb
,
852 opts
, kern_flags
, set_kern_flags
);
854 EXPORT_SYMBOL(security_sb_set_mnt_opts
);
856 int security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
857 struct super_block
*newsb
,
858 unsigned long kern_flags
,
859 unsigned long *set_kern_flags
)
861 return call_int_hook(sb_clone_mnt_opts
, 0, oldsb
, newsb
,
862 kern_flags
, set_kern_flags
);
864 EXPORT_SYMBOL(security_sb_clone_mnt_opts
);
866 int security_sb_parse_opts_str(char *options
, struct security_mnt_opts
*opts
)
868 return call_int_hook(sb_parse_opts_str
, 0, options
, opts
);
870 EXPORT_SYMBOL(security_sb_parse_opts_str
);
872 int security_inode_alloc(struct inode
*inode
)
874 int rc
= lsm_inode_alloc(inode
);
878 rc
= call_int_hook(inode_alloc_security
, 0, inode
);
880 security_inode_free(inode
);
884 static void inode_free_by_rcu(struct rcu_head
*head
)
887 * The rcu head is at the start of the inode blob
889 kmem_cache_free(lsm_inode_cache
, head
);
892 void security_inode_free(struct inode
*inode
)
894 integrity_inode_free(inode
);
895 call_void_hook(inode_free_security
, inode
);
897 * The inode may still be referenced in a path walk and
898 * a call to security_inode_permission() can be made
899 * after inode_free_security() is called. Ideally, the VFS
900 * wouldn't do this, but fixing that is a much harder
901 * job. For now, simply free the i_security via RCU, and
902 * leave the current inode->i_security pointer intact.
903 * The inode will be freed after the RCU grace period too.
905 if (inode
->i_security
)
906 call_rcu((struct rcu_head
*)inode
->i_security
,
910 int security_dentry_init_security(struct dentry
*dentry
, int mode
,
911 const struct qstr
*name
, void **ctx
,
914 return call_int_hook(dentry_init_security
, -EOPNOTSUPP
, dentry
, mode
,
917 EXPORT_SYMBOL(security_dentry_init_security
);
919 int security_dentry_create_files_as(struct dentry
*dentry
, int mode
,
921 const struct cred
*old
, struct cred
*new)
923 return call_int_hook(dentry_create_files_as
, 0, dentry
, mode
,
926 EXPORT_SYMBOL(security_dentry_create_files_as
);
928 int security_inode_init_security(struct inode
*inode
, struct inode
*dir
,
929 const struct qstr
*qstr
,
930 const initxattrs initxattrs
, void *fs_data
)
932 struct xattr new_xattrs
[MAX_LSM_EVM_XATTR
+ 1];
933 struct xattr
*lsm_xattr
, *evm_xattr
, *xattr
;
936 if (unlikely(IS_PRIVATE(inode
)))
940 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
,
941 dir
, qstr
, NULL
, NULL
, NULL
);
942 memset(new_xattrs
, 0, sizeof(new_xattrs
));
943 lsm_xattr
= new_xattrs
;
944 ret
= call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
, qstr
,
947 &lsm_xattr
->value_len
);
951 evm_xattr
= lsm_xattr
+ 1;
952 ret
= evm_inode_init_security(inode
, lsm_xattr
, evm_xattr
);
955 ret
= initxattrs(inode
, new_xattrs
, fs_data
);
957 for (xattr
= new_xattrs
; xattr
->value
!= NULL
; xattr
++)
959 return (ret
== -EOPNOTSUPP
) ? 0 : ret
;
961 EXPORT_SYMBOL(security_inode_init_security
);
963 int security_old_inode_init_security(struct inode
*inode
, struct inode
*dir
,
964 const struct qstr
*qstr
, const char **name
,
965 void **value
, size_t *len
)
967 if (unlikely(IS_PRIVATE(inode
)))
969 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
,
970 qstr
, name
, value
, len
);
972 EXPORT_SYMBOL(security_old_inode_init_security
);
974 #ifdef CONFIG_SECURITY_PATH
975 int security_path_mknod(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
,
978 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
980 return call_int_hook(path_mknod
, 0, dir
, dentry
, mode
, dev
);
982 EXPORT_SYMBOL(security_path_mknod
);
984 int security_path_mkdir(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
)
986 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
988 return call_int_hook(path_mkdir
, 0, dir
, dentry
, mode
);
990 EXPORT_SYMBOL(security_path_mkdir
);
992 int security_path_rmdir(const struct path
*dir
, struct dentry
*dentry
)
994 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
996 return call_int_hook(path_rmdir
, 0, dir
, dentry
);
998 EXPORT_SYMBOL_GPL(security_path_rmdir
);
1000 int security_path_unlink(const struct path
*dir
, struct dentry
*dentry
)
1002 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1004 return call_int_hook(path_unlink
, 0, dir
, dentry
);
1006 EXPORT_SYMBOL(security_path_unlink
);
1008 int security_path_symlink(const struct path
*dir
, struct dentry
*dentry
,
1009 const char *old_name
)
1011 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1013 return call_int_hook(path_symlink
, 0, dir
, dentry
, old_name
);
1015 EXPORT_SYMBOL_GPL(security_path_symlink
);
1017 int security_path_link(struct dentry
*old_dentry
, const struct path
*new_dir
,
1018 struct dentry
*new_dentry
)
1020 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1022 return call_int_hook(path_link
, 0, old_dentry
, new_dir
, new_dentry
);
1024 EXPORT_SYMBOL_GPL(security_path_link
);
1026 int security_path_rename(const struct path
*old_dir
, struct dentry
*old_dentry
,
1027 const struct path
*new_dir
, struct dentry
*new_dentry
,
1030 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1031 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1034 if (flags
& RENAME_EXCHANGE
) {
1035 int err
= call_int_hook(path_rename
, 0, new_dir
, new_dentry
,
1036 old_dir
, old_dentry
);
1041 return call_int_hook(path_rename
, 0, old_dir
, old_dentry
, new_dir
,
1044 EXPORT_SYMBOL(security_path_rename
);
1046 int security_path_truncate(const struct path
*path
)
1048 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1050 return call_int_hook(path_truncate
, 0, path
);
1052 EXPORT_SYMBOL_GPL(security_path_truncate
);
1054 int security_path_chmod(const struct path
*path
, umode_t mode
)
1056 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1058 return call_int_hook(path_chmod
, 0, path
, mode
);
1060 EXPORT_SYMBOL_GPL(security_path_chmod
);
1062 int security_path_chown(const struct path
*path
, kuid_t uid
, kgid_t gid
)
1064 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1066 return call_int_hook(path_chown
, 0, path
, uid
, gid
);
1068 EXPORT_SYMBOL_GPL(security_path_chown
);
1070 int security_path_chroot(const struct path
*path
)
1072 return call_int_hook(path_chroot
, 0, path
);
1076 int security_inode_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1078 if (unlikely(IS_PRIVATE(dir
)))
1080 return call_int_hook(inode_create
, 0, dir
, dentry
, mode
);
1082 EXPORT_SYMBOL_GPL(security_inode_create
);
1084 int security_inode_link(struct dentry
*old_dentry
, struct inode
*dir
,
1085 struct dentry
*new_dentry
)
1087 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1089 return call_int_hook(inode_link
, 0, old_dentry
, dir
, new_dentry
);
1092 int security_inode_unlink(struct inode
*dir
, struct dentry
*dentry
)
1094 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1096 return call_int_hook(inode_unlink
, 0, dir
, dentry
);
1099 int security_inode_symlink(struct inode
*dir
, struct dentry
*dentry
,
1100 const char *old_name
)
1102 if (unlikely(IS_PRIVATE(dir
)))
1104 return call_int_hook(inode_symlink
, 0, dir
, dentry
, old_name
);
1107 int security_inode_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1109 if (unlikely(IS_PRIVATE(dir
)))
1111 return call_int_hook(inode_mkdir
, 0, dir
, dentry
, mode
);
1113 EXPORT_SYMBOL_GPL(security_inode_mkdir
);
1115 int security_inode_rmdir(struct inode
*dir
, struct dentry
*dentry
)
1117 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1119 return call_int_hook(inode_rmdir
, 0, dir
, dentry
);
1122 int security_inode_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
, dev_t dev
)
1124 if (unlikely(IS_PRIVATE(dir
)))
1126 return call_int_hook(inode_mknod
, 0, dir
, dentry
, mode
, dev
);
1129 int security_inode_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1130 struct inode
*new_dir
, struct dentry
*new_dentry
,
1133 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1134 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1137 if (flags
& RENAME_EXCHANGE
) {
1138 int err
= call_int_hook(inode_rename
, 0, new_dir
, new_dentry
,
1139 old_dir
, old_dentry
);
1144 return call_int_hook(inode_rename
, 0, old_dir
, old_dentry
,
1145 new_dir
, new_dentry
);
1148 int security_inode_readlink(struct dentry
*dentry
)
1150 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1152 return call_int_hook(inode_readlink
, 0, dentry
);
1154 EXPORT_SYMBOL_GPL(security_inode_readlink
);
1156 int security_inode_follow_link(struct dentry
*dentry
, struct inode
*inode
,
1159 if (unlikely(IS_PRIVATE(inode
)))
1161 return call_int_hook(inode_follow_link
, 0, dentry
, inode
, rcu
);
1164 int security_inode_permission(struct inode
*inode
, int mask
)
1166 if (unlikely(IS_PRIVATE(inode
)))
1168 return call_int_hook(inode_permission
, 0, inode
, mask
);
1170 EXPORT_SYMBOL_GPL(security_inode_permission
);
1172 int security_inode_setattr(struct dentry
*dentry
, struct iattr
*attr
)
1176 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1178 ret
= call_int_hook(inode_setattr
, 0, dentry
, attr
);
1181 return evm_inode_setattr(dentry
, attr
);
1183 EXPORT_SYMBOL_GPL(security_inode_setattr
);
1185 int security_inode_getattr(const struct path
*path
)
1187 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1189 return call_int_hook(inode_getattr
, 0, path
);
1192 int security_inode_setxattr(struct dentry
*dentry
, const char *name
,
1193 const void *value
, size_t size
, int flags
)
1197 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1200 * SELinux and Smack integrate the cap call,
1201 * so assume that all LSMs supplying this call do so.
1203 ret
= call_int_hook(inode_setxattr
, 1, dentry
, name
, value
, size
,
1207 ret
= cap_inode_setxattr(dentry
, name
, value
, size
, flags
);
1210 ret
= ima_inode_setxattr(dentry
, name
, value
, size
);
1213 return evm_inode_setxattr(dentry
, name
, value
, size
);
1216 void security_inode_post_setxattr(struct dentry
*dentry
, const char *name
,
1217 const void *value
, size_t size
, int flags
)
1219 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1221 call_void_hook(inode_post_setxattr
, dentry
, name
, value
, size
, flags
);
1222 evm_inode_post_setxattr(dentry
, name
, value
, size
);
1225 int security_inode_getxattr(struct dentry
*dentry
, const char *name
)
1227 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1229 return call_int_hook(inode_getxattr
, 0, dentry
, name
);
1232 int security_inode_listxattr(struct dentry
*dentry
)
1234 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1236 return call_int_hook(inode_listxattr
, 0, dentry
);
1239 int security_inode_removexattr(struct dentry
*dentry
, const char *name
)
1243 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1246 * SELinux and Smack integrate the cap call,
1247 * so assume that all LSMs supplying this call do so.
1249 ret
= call_int_hook(inode_removexattr
, 1, dentry
, name
);
1251 ret
= cap_inode_removexattr(dentry
, name
);
1254 ret
= ima_inode_removexattr(dentry
, name
);
1257 return evm_inode_removexattr(dentry
, name
);
1260 int security_inode_need_killpriv(struct dentry
*dentry
)
1262 return call_int_hook(inode_need_killpriv
, 0, dentry
);
1265 int security_inode_killpriv(struct dentry
*dentry
)
1267 return call_int_hook(inode_killpriv
, 0, dentry
);
1270 int security_inode_getsecurity(struct inode
*inode
, const char *name
, void **buffer
, bool alloc
)
1272 struct security_hook_list
*hp
;
1275 if (unlikely(IS_PRIVATE(inode
)))
1278 * Only one module will provide an attribute with a given name.
1280 list_for_each_entry(hp
, &security_hook_heads
.inode_getsecurity
, list
) {
1281 rc
= hp
->hook
.inode_getsecurity(inode
, name
, buffer
, alloc
);
1282 if (rc
!= -EOPNOTSUPP
)
1288 int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
)
1290 struct security_hook_list
*hp
;
1293 if (unlikely(IS_PRIVATE(inode
)))
1296 * Only one module will provide an attribute with a given name.
1298 list_for_each_entry(hp
, &security_hook_heads
.inode_setsecurity
, list
) {
1299 rc
= hp
->hook
.inode_setsecurity(inode
, name
, value
, size
,
1301 if (rc
!= -EOPNOTSUPP
)
1307 int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
)
1309 if (unlikely(IS_PRIVATE(inode
)))
1311 return call_int_hook(inode_listsecurity
, 0, inode
, buffer
, buffer_size
);
1313 EXPORT_SYMBOL(security_inode_listsecurity
);
1315 void security_inode_getsecid(struct inode
*inode
, u32
*secid
)
1317 call_void_hook(inode_getsecid
, inode
, secid
);
1320 int security_inode_copy_up(struct dentry
*src
, struct cred
**new)
1322 return call_int_hook(inode_copy_up
, 0, src
, new);
1324 EXPORT_SYMBOL(security_inode_copy_up
);
1326 int security_inode_copy_up_xattr(const char *name
)
1328 return call_int_hook(inode_copy_up_xattr
, -EOPNOTSUPP
, name
);
1330 EXPORT_SYMBOL(security_inode_copy_up_xattr
);
1332 int security_file_permission(struct file
*file
, int mask
)
1336 ret
= call_int_hook(file_permission
, 0, file
, mask
);
1340 return fsnotify_perm(file
, mask
);
1342 EXPORT_SYMBOL_GPL(security_file_permission
);
1344 int security_file_alloc(struct file
*file
)
1346 int rc
= lsm_file_alloc(file
);
1350 rc
= call_int_hook(file_alloc_security
, 0, file
);
1352 security_file_free(file
);
1356 void security_file_free(struct file
*file
)
1360 if (!lsm_file_cache
)
1363 call_void_hook(file_free_security
, file
);
1365 blob
= file
->f_security
;
1366 file
->f_security
= NULL
;
1367 kmem_cache_free(lsm_file_cache
, blob
);
1370 int security_file_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1372 return call_int_hook(file_ioctl
, 0, file
, cmd
, arg
);
1375 static inline unsigned long mmap_prot(struct file
*file
, unsigned long prot
)
1378 * Does we have PROT_READ and does the application expect
1379 * it to imply PROT_EXEC? If not, nothing to talk about...
1381 if ((prot
& (PROT_READ
| PROT_EXEC
)) != PROT_READ
)
1383 if (!(current
->personality
& READ_IMPLIES_EXEC
))
1386 * if that's an anonymous mapping, let it.
1389 return prot
| PROT_EXEC
;
1391 * ditto if it's not on noexec mount, except that on !MMU we need
1392 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1394 if (!path_noexec(&file
->f_path
)) {
1396 if (file
->f_op
->mmap_capabilities
) {
1397 unsigned caps
= file
->f_op
->mmap_capabilities(file
);
1398 if (!(caps
& NOMMU_MAP_EXEC
))
1402 return prot
| PROT_EXEC
;
1404 /* anything on noexec mount won't get PROT_EXEC */
1408 int security_mmap_file(struct file
*file
, unsigned long prot
,
1409 unsigned long flags
)
1412 ret
= call_int_hook(mmap_file
, 0, file
, prot
,
1413 mmap_prot(file
, prot
), flags
);
1416 return ima_file_mmap(file
, prot
);
1418 EXPORT_SYMBOL_GPL(security_mmap_file
);
1420 int security_mmap_addr(unsigned long addr
)
1422 return call_int_hook(mmap_addr
, 0, addr
);
1425 int security_file_mprotect(struct vm_area_struct
*vma
, unsigned long reqprot
,
1428 return call_int_hook(file_mprotect
, 0, vma
, reqprot
, prot
);
1431 int security_file_lock(struct file
*file
, unsigned int cmd
)
1433 return call_int_hook(file_lock
, 0, file
, cmd
);
1436 int security_file_fcntl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1438 return call_int_hook(file_fcntl
, 0, file
, cmd
, arg
);
1441 void security_file_set_fowner(struct file
*file
)
1443 call_void_hook(file_set_fowner
, file
);
1446 int security_file_send_sigiotask(struct task_struct
*tsk
,
1447 struct fown_struct
*fown
, int sig
)
1449 return call_int_hook(file_send_sigiotask
, 0, tsk
, fown
, sig
);
1452 int security_file_receive(struct file
*file
)
1454 return call_int_hook(file_receive
, 0, file
);
1457 int security_file_open(struct file
*file
, const struct cred
*cred
)
1461 ret
= call_int_hook(file_open
, 0, file
, cred
);
1465 return fsnotify_perm(file
, MAY_OPEN
);
1468 int security_task_alloc(struct task_struct
*task
, unsigned long clone_flags
)
1470 int rc
= lsm_task_alloc(task
);
1474 rc
= call_int_hook(task_alloc
, 0, task
, clone_flags
);
1476 security_task_free(task
);
1480 void security_task_free(struct task_struct
*task
)
1482 call_void_hook(task_free
, task
);
1484 kfree(task
->security
);
1485 task
->security
= NULL
;
1488 int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
)
1490 int rc
= lsm_cred_alloc(cred
, gfp
);
1495 rc
= call_int_hook(cred_alloc_blank
, 0, cred
, gfp
);
1497 security_cred_free(cred
);
1501 void security_cred_free(struct cred
*cred
)
1504 * There is a failure case in prepare_creds() that
1505 * may result in a call here with ->security being NULL.
1507 if (unlikely(cred
->security
== NULL
))
1510 call_void_hook(cred_free
, cred
);
1512 kfree(cred
->security
);
1513 cred
->security
= NULL
;
1516 int security_prepare_creds(struct cred
*new, const struct cred
*old
, gfp_t gfp
)
1518 int rc
= lsm_cred_alloc(new, gfp
);
1523 rc
= call_int_hook(cred_prepare
, 0, new, old
, gfp
);
1525 security_cred_free(new);
1529 void security_transfer_creds(struct cred
*new, const struct cred
*old
)
1531 call_void_hook(cred_transfer
, new, old
);
1534 int security_kernel_act_as(struct cred
*new, u32 secid
)
1536 return call_int_hook(kernel_act_as
, 0, new, secid
);
1539 int security_kernel_create_files_as(struct cred
*new, struct inode
*inode
)
1541 return call_int_hook(kernel_create_files_as
, 0, new, inode
);
1544 int security_kernel_module_request(char *kmod_name
)
1546 return call_int_hook(kernel_module_request
, 0, kmod_name
);
1549 int security_kernel_read_file(struct file
*file
, enum kernel_read_file_id id
)
1553 ret
= call_int_hook(kernel_read_file
, 0, file
, id
);
1556 return ima_read_file(file
, id
);
1558 EXPORT_SYMBOL_GPL(security_kernel_read_file
);
1560 int security_kernel_post_read_file(struct file
*file
, char *buf
, loff_t size
,
1561 enum kernel_read_file_id id
)
1565 ret
= call_int_hook(kernel_post_read_file
, 0, file
, buf
, size
, id
);
1568 return ima_post_read_file(file
, buf
, size
, id
);
1570 EXPORT_SYMBOL_GPL(security_kernel_post_read_file
);
1572 int security_task_fix_setuid(struct cred
*new, const struct cred
*old
,
1575 return call_int_hook(task_fix_setuid
, 0, new, old
, flags
);
1578 int security_task_setpgid(struct task_struct
*p
, pid_t pgid
)
1580 return call_int_hook(task_setpgid
, 0, p
, pgid
);
1583 int security_task_getpgid(struct task_struct
*p
)
1585 return call_int_hook(task_getpgid
, 0, p
);
1588 int security_task_getsid(struct task_struct
*p
)
1590 return call_int_hook(task_getsid
, 0, p
);
1593 void security_task_getsecid(struct task_struct
*p
, u32
*secid
)
1596 call_void_hook(task_getsecid
, p
, secid
);
1598 EXPORT_SYMBOL(security_task_getsecid
);
1600 int security_task_setnice(struct task_struct
*p
, int nice
)
1602 return call_int_hook(task_setnice
, 0, p
, nice
);
1605 int security_task_setioprio(struct task_struct
*p
, int ioprio
)
1607 return call_int_hook(task_setioprio
, 0, p
, ioprio
);
1610 int security_task_getioprio(struct task_struct
*p
)
1612 return call_int_hook(task_getioprio
, 0, p
);
1615 int security_task_prlimit(const struct cred
*cred
, const struct cred
*tcred
,
1618 return call_int_hook(task_prlimit
, 0, cred
, tcred
, flags
);
1621 int security_task_setrlimit(struct task_struct
*p
, unsigned int resource
,
1622 struct rlimit
*new_rlim
)
1624 return call_int_hook(task_setrlimit
, 0, p
, resource
, new_rlim
);
1627 int security_task_setscheduler(struct task_struct
*p
)
1629 return call_int_hook(task_setscheduler
, 0, p
);
1632 int security_task_getscheduler(struct task_struct
*p
)
1634 return call_int_hook(task_getscheduler
, 0, p
);
1637 int security_task_movememory(struct task_struct
*p
)
1639 return call_int_hook(task_movememory
, 0, p
);
1642 int security_task_kill(struct task_struct
*p
, struct siginfo
*info
,
1645 return call_int_hook(task_kill
, 0, p
, info
, sig
, secid
);
1648 #ifdef CONFIG_SECURITY_STACKING
1649 static char *nolsm
= "-default";
1652 static bool is_registered_lsm(const char *str
, size_t size
)
1654 struct security_hook_list
*hp
;
1656 list_for_each_entry(hp
, &security_hook_heads
.getprocattr
, list
) {
1657 if (size
== strlen(hp
->lsm
) && !strncmp(str
, hp
->lsm
, size
))
1664 static bool set_lsm_of_current(const char *str
, size_t size
)
1666 char *lsm
= lsm_of_task(current
);
1668 if (is_registered_lsm(str
, size
)) {
1669 strncpy(lsm
, str
, size
);
1671 } else if (size
== NOLSMLEN
&& !strncmp(str
, nolsm
, size
)) {
1679 static int lsm_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1680 unsigned long arg4
, unsigned long arg5
)
1682 char *lsm
= lsm_of_task(current
);
1683 char buffer
[SECURITY_NAME_MAX
+ 1];
1684 __user
char *optval
= (__user
char *)arg2
;
1685 __user
int *optlen
= (__user
int *)arg3
;
1690 case PR_GET_DISPLAY_LSM
:
1692 if (lsm
[0] == '\0') {
1696 dlen
= strlen(lsm
) + 1;
1699 if (copy_to_user(optval
, lsm
, dlen
))
1701 if (put_user(dlen
, optlen
))
1704 case PR_SET_DISPLAY_LSM
:
1706 if (len
> SECURITY_NAME_MAX
)
1708 if (copy_from_user(buffer
, optval
, len
))
1711 /* verify the requested LSM is registered */
1712 if (!set_lsm_of_current(buffer
, len
))
1722 int security_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1723 unsigned long arg4
, unsigned long arg5
)
1727 struct security_hook_list
*hp
;
1729 #ifdef CONFIG_SECURITY_STACKING
1730 rc
= lsm_task_prctl(option
, arg2
, arg3
, arg4
, arg5
);
1735 list_for_each_entry(hp
, &security_hook_heads
.task_prctl
, list
) {
1736 thisrc
= hp
->hook
.task_prctl(option
, arg2
, arg3
, arg4
, arg5
);
1737 if (thisrc
!= -ENOSYS
) {
1746 void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
)
1748 call_void_hook(task_to_inode
, p
, inode
);
1751 int security_ipc_permission(struct kern_ipc_perm
*ipcp
, short flag
)
1753 return call_int_hook(ipc_permission
, 0, ipcp
, flag
);
1756 void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
)
1759 call_void_hook(ipc_getsecid
, ipcp
, secid
);
1762 int security_msg_msg_alloc(struct msg_msg
*msg
)
1764 int rc
= lsm_msg_msg_alloc(msg
);
1768 rc
= call_int_hook(msg_msg_alloc_security
, 0, msg
);
1770 security_msg_msg_free(msg
);
1774 void security_msg_msg_free(struct msg_msg
*msg
)
1776 call_void_hook(msg_msg_free_security
, msg
);
1777 kfree(msg
->security
);
1778 msg
->security
= NULL
;
1781 int security_msg_queue_alloc(struct msg_queue
*msq
)
1783 int rc
= lsm_ipc_alloc(&msq
->q_perm
);
1787 rc
= call_int_hook(msg_queue_alloc_security
, 0, msq
);
1789 security_msg_queue_free(msq
);
1793 void security_msg_queue_free(struct msg_queue
*msq
)
1795 struct kern_ipc_perm
*kip
= &msq
->q_perm
;
1797 call_void_hook(msg_queue_free_security
, msq
);
1798 kfree(kip
->security
);
1799 kip
->security
= NULL
;
1802 int security_msg_queue_associate(struct msg_queue
*msq
, int msqflg
)
1804 return call_int_hook(msg_queue_associate
, 0, msq
, msqflg
);
1807 int security_msg_queue_msgctl(struct msg_queue
*msq
, int cmd
)
1809 return call_int_hook(msg_queue_msgctl
, 0, msq
, cmd
);
1812 int security_msg_queue_msgsnd(struct msg_queue
*msq
,
1813 struct msg_msg
*msg
, int msqflg
)
1815 return call_int_hook(msg_queue_msgsnd
, 0, msq
, msg
, msqflg
);
1818 int security_msg_queue_msgrcv(struct msg_queue
*msq
, struct msg_msg
*msg
,
1819 struct task_struct
*target
, long type
, int mode
)
1821 return call_int_hook(msg_queue_msgrcv
, 0, msq
, msg
, target
, type
, mode
);
1824 int security_shm_alloc(struct shmid_kernel
*shp
)
1826 int rc
= lsm_ipc_alloc(&shp
->shm_perm
);
1830 rc
= call_int_hook(shm_alloc_security
, 0, shp
);
1832 security_shm_free(shp
);
1836 void security_shm_free(struct shmid_kernel
*shp
)
1838 struct kern_ipc_perm
*kip
= &shp
->shm_perm
;
1840 call_void_hook(shm_free_security
, shp
);
1841 kfree(kip
->security
);
1842 kip
->security
= NULL
;
1845 int security_shm_associate(struct shmid_kernel
*shp
, int shmflg
)
1847 return call_int_hook(shm_associate
, 0, shp
, shmflg
);
1850 int security_shm_shmctl(struct shmid_kernel
*shp
, int cmd
)
1852 return call_int_hook(shm_shmctl
, 0, shp
, cmd
);
1855 int security_shm_shmat(struct shmid_kernel
*shp
, char __user
*shmaddr
, int shmflg
)
1857 return call_int_hook(shm_shmat
, 0, shp
, shmaddr
, shmflg
);
1860 int security_sem_alloc(struct sem_array
*sma
)
1862 int rc
= lsm_ipc_alloc(&sma
->sem_perm
);
1866 rc
= call_int_hook(sem_alloc_security
, 0, sma
);
1868 security_sem_free(sma
);
1872 void security_sem_free(struct sem_array
*sma
)
1874 struct kern_ipc_perm
*kip
= &sma
->sem_perm
;
1876 call_void_hook(sem_free_security
, sma
);
1877 kfree(kip
->security
);
1878 kip
->security
= NULL
;
1881 int security_sem_associate(struct sem_array
*sma
, int semflg
)
1883 return call_int_hook(sem_associate
, 0, sma
, semflg
);
1886 int security_sem_semctl(struct sem_array
*sma
, int cmd
)
1888 return call_int_hook(sem_semctl
, 0, sma
, cmd
);
1891 int security_sem_semop(struct sem_array
*sma
, struct sembuf
*sops
,
1892 unsigned nsops
, int alter
)
1894 return call_int_hook(sem_semop
, 0, sma
, sops
, nsops
, alter
);
1897 void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
)
1899 if (unlikely(inode
&& IS_PRIVATE(inode
)))
1901 call_void_hook(d_instantiate
, dentry
, inode
);
1903 EXPORT_SYMBOL(security_d_instantiate
);
1905 int security_getprocattr(struct task_struct
*p
, const char *lsm
, char *name
,
1908 #ifdef CONFIG_SECURITY_STACKING
1909 char *speclsm
= lsm_of_task(p
);
1911 struct security_hook_list
*hp
;
1914 if (strcmp(name
, "display_lsm") == 0) {
1915 *value
= kstrdup(current
->security
, GFP_KERNEL
);
1918 return strlen(*value
);
1921 list_for_each_entry(hp
, &security_hook_heads
.getprocattr
, list
) {
1922 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
1924 #ifdef CONFIG_SECURITY_STACKING
1925 if (!lsm
&& speclsm
&& speclsm
[0] && strcmp(speclsm
, hp
->lsm
))
1928 rc
= hp
->hook
.getprocattr(p
, name
, value
);
1935 int security_setprocattr(const char *lsm
, const char *name
, void *value
,
1938 #ifdef CONFIG_SECURITY_STACKING
1939 char *speclsm
= lsm_of_task(current
);
1943 struct security_hook_list
*hp
;
1949 if (strcmp(name
, "display_lsm") == 0) {
1950 #ifdef CONFIG_SECURITY_STACKING
1951 if (set_lsm_of_current(value
, size
))
1957 list_for_each_entry(hp
, &security_hook_heads
.setprocattr
, list
) {
1958 #ifdef CONFIG_SECURITY_STACKING
1959 if (!lsm
&& speclsm
&& speclsm
[0] && strcmp(speclsm
, hp
->lsm
))
1962 rc
= hp
->hook
.setprocattr(name
, value
, size
);
1969 int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
)
1971 return call_int_hook(netlink_send
, 0, sk
, skb
);
1974 int security_ismaclabel(const char *name
)
1976 return call_int_hook(ismaclabel
, 0, name
);
1978 EXPORT_SYMBOL(security_ismaclabel
);
1980 int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
)
1982 return call_int_hook(secid_to_secctx
, -EOPNOTSUPP
, secid
, secdata
,
1985 EXPORT_SYMBOL(security_secid_to_secctx
);
1987 int security_secctx_to_secid(const char *secdata
, u32 seclen
, u32
*secid
)
1990 return call_int_hook(secctx_to_secid
, 0, secdata
, seclen
, secid
);
1992 EXPORT_SYMBOL(security_secctx_to_secid
);
1994 void security_release_secctx(char *secdata
, u32 seclen
)
1996 #ifdef CONFIG_SECURITY_STACKING
1997 char *speclsm
= lsm_of_task(current
);
1999 struct security_hook_list
*hp
;
2001 list_for_each_entry(hp
, &security_hook_heads
.release_secctx
, list
) {
2002 #ifdef CONFIG_SECURITY_STACKING
2003 if (speclsm
[0] && strcmp(hp
->lsm
, speclsm
))
2006 hp
->hook
.release_secctx(secdata
, seclen
);
2010 EXPORT_SYMBOL(security_release_secctx
);
2012 void security_inode_invalidate_secctx(struct inode
*inode
)
2014 call_void_hook(inode_invalidate_secctx
, inode
);
2016 EXPORT_SYMBOL(security_inode_invalidate_secctx
);
2018 int security_inode_notifysecctx(struct inode
*inode
, void *ctx
, u32 ctxlen
)
2020 return call_int_hook(inode_notifysecctx
, 0, inode
, ctx
, ctxlen
);
2022 EXPORT_SYMBOL(security_inode_notifysecctx
);
2024 int security_inode_setsecctx(struct dentry
*dentry
, void *ctx
, u32 ctxlen
)
2026 return call_int_hook(inode_setsecctx
, 0, dentry
, ctx
, ctxlen
);
2028 EXPORT_SYMBOL(security_inode_setsecctx
);
2030 int security_inode_getsecctx(struct inode
*inode
, void **ctx
, u32
*ctxlen
)
2032 return call_int_hook(inode_getsecctx
, -EOPNOTSUPP
, inode
, ctx
, ctxlen
);
2034 EXPORT_SYMBOL(security_inode_getsecctx
);
2036 #ifdef CONFIG_SECURITY_NETWORK
2038 int security_unix_stream_connect(struct sock
*sock
, struct sock
*other
, struct sock
*newsk
)
2040 return call_int_hook(unix_stream_connect
, 0, sock
, other
, newsk
);
2042 EXPORT_SYMBOL(security_unix_stream_connect
);
2044 int security_unix_may_send(struct socket
*sock
, struct socket
*other
)
2046 return call_int_hook(unix_may_send
, 0, sock
, other
);
2048 EXPORT_SYMBOL(security_unix_may_send
);
2050 int security_socket_create(int family
, int type
, int protocol
, int kern
)
2052 return call_int_hook(socket_create
, 0, family
, type
, protocol
, kern
);
2055 int security_socket_post_create(struct socket
*sock
, int family
,
2056 int type
, int protocol
, int kern
)
2058 return call_int_hook(socket_post_create
, 0, sock
, family
, type
,
2062 int security_socket_bind(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2064 return call_int_hook(socket_bind
, 0, sock
, address
, addrlen
);
2067 int security_socket_connect(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2069 return call_int_hook(socket_connect
, 0, sock
, address
, addrlen
);
2072 int security_socket_listen(struct socket
*sock
, int backlog
)
2074 return call_int_hook(socket_listen
, 0, sock
, backlog
);
2077 int security_socket_accept(struct socket
*sock
, struct socket
*newsock
)
2079 return call_int_hook(socket_accept
, 0, sock
, newsock
);
2082 int security_socket_sendmsg(struct socket
*sock
, struct msghdr
*msg
, int size
)
2084 return call_int_hook(socket_sendmsg
, 0, sock
, msg
, size
);
2087 int security_socket_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
2088 int size
, int flags
)
2090 return call_int_hook(socket_recvmsg
, 0, sock
, msg
, size
, flags
);
2093 int security_socket_getsockname(struct socket
*sock
)
2095 return call_int_hook(socket_getsockname
, 0, sock
);
2098 int security_socket_getpeername(struct socket
*sock
)
2100 return call_int_hook(socket_getpeername
, 0, sock
);
2103 int security_socket_getsockopt(struct socket
*sock
, int level
, int optname
)
2105 return call_int_hook(socket_getsockopt
, 0, sock
, level
, optname
);
2108 int security_socket_setsockopt(struct socket
*sock
, int level
, int optname
)
2110 return call_int_hook(socket_setsockopt
, 0, sock
, level
, optname
);
2113 int security_socket_shutdown(struct socket
*sock
, int how
)
2115 return call_int_hook(socket_shutdown
, 0, sock
, how
);
2118 int security_sock_rcv_skb(struct sock
*sk
, struct sk_buff
*skb
)
2120 return call_int_hook(socket_sock_rcv_skb
, 0, sk
, skb
);
2122 EXPORT_SYMBOL(security_sock_rcv_skb
);
2124 int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2125 int __user
*optlen
, unsigned len
)
2127 #ifdef CONFIG_SECURITY_STACKING
2128 struct security_hook_list
*hp
;
2129 char *lsm
= lsm_of_task(current
);
2131 list_for_each_entry(hp
, &security_hook_heads
.socket_getpeersec_stream
,
2133 if (!lsm
|| !lsm
[0] || !strcmp(lsm
, hp
->lsm
))
2134 return hp
->hook
.socket_getpeersec_stream(sock
, optval
,
2137 return -ENOPROTOOPT
;
2139 return call_int_hook(socket_getpeersec_stream
, -ENOPROTOOPT
, sock
,
2140 optval
, optlen
, len
);
2144 int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
)
2146 return call_int_hook(socket_getpeersec_dgram
, -ENOPROTOOPT
, sock
,
2149 EXPORT_SYMBOL(security_socket_getpeersec_dgram
);
2151 int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
)
2153 int rc
= lsm_sock_alloc(sk
, priority
);
2157 rc
= call_int_hook(sk_alloc_security
, 0, sk
, family
, priority
);
2159 security_sk_free(sk
);
2163 void security_sk_free(struct sock
*sk
)
2165 call_void_hook(sk_free_security
, sk
);
2166 kfree(sk
->sk_security
);
2167 sk
->sk_security
= NULL
;
2170 void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
)
2172 call_void_hook(sk_clone_security
, sk
, newsk
);
2174 EXPORT_SYMBOL(security_sk_clone
);
2176 void security_sk_classify_flow(struct sock
*sk
, struct flowi
*fl
)
2178 call_void_hook(sk_getsecid
, sk
, &fl
->flowi_secid
);
2180 EXPORT_SYMBOL(security_sk_classify_flow
);
2182 void security_req_classify_flow(const struct request_sock
*req
, struct flowi
*fl
)
2184 call_void_hook(req_classify_flow
, req
, fl
);
2186 EXPORT_SYMBOL(security_req_classify_flow
);
2188 void security_sock_graft(struct sock
*sk
, struct socket
*parent
)
2190 call_void_hook(sock_graft
, sk
, parent
);
2192 EXPORT_SYMBOL(security_sock_graft
);
2194 int security_inet_conn_request(struct sock
*sk
,
2195 struct sk_buff
*skb
, struct request_sock
*req
)
2197 return call_int_hook(inet_conn_request
, 0, sk
, skb
, req
);
2199 EXPORT_SYMBOL(security_inet_conn_request
);
2201 void security_inet_csk_clone(struct sock
*newsk
,
2202 const struct request_sock
*req
)
2204 call_void_hook(inet_csk_clone
, newsk
, req
);
2207 void security_inet_conn_established(struct sock
*sk
,
2208 struct sk_buff
*skb
)
2210 call_void_hook(inet_conn_established
, sk
, skb
);
2213 int security_secmark_relabel_packet(u32 secid
)
2215 return call_int_hook(secmark_relabel_packet
, 0, secid
);
2217 EXPORT_SYMBOL(security_secmark_relabel_packet
);
2219 void security_secmark_refcount_inc(void)
2221 call_void_hook(secmark_refcount_inc
);
2223 EXPORT_SYMBOL(security_secmark_refcount_inc
);
2225 void security_secmark_refcount_dec(void)
2227 call_void_hook(secmark_refcount_dec
);
2229 EXPORT_SYMBOL(security_secmark_refcount_dec
);
2231 int security_tun_dev_alloc_security(void **security
)
2233 return call_int_hook(tun_dev_alloc_security
, 0, security
);
2235 EXPORT_SYMBOL(security_tun_dev_alloc_security
);
2237 void security_tun_dev_free_security(void *security
)
2239 call_void_hook(tun_dev_free_security
, security
);
2241 EXPORT_SYMBOL(security_tun_dev_free_security
);
2243 int security_tun_dev_create(void)
2245 return call_int_hook(tun_dev_create
, 0);
2247 EXPORT_SYMBOL(security_tun_dev_create
);
2249 int security_tun_dev_attach_queue(void *security
)
2251 return call_int_hook(tun_dev_attach_queue
, 0, security
);
2253 EXPORT_SYMBOL(security_tun_dev_attach_queue
);
2255 int security_tun_dev_attach(struct sock
*sk
, void *security
)
2257 return call_int_hook(tun_dev_attach
, 0, sk
, security
);
2259 EXPORT_SYMBOL(security_tun_dev_attach
);
2261 int security_tun_dev_open(void *security
)
2263 return call_int_hook(tun_dev_open
, 0, security
);
2265 EXPORT_SYMBOL(security_tun_dev_open
);
2267 #endif /* CONFIG_SECURITY_NETWORK */
2269 #ifdef CONFIG_SECURITY_INFINIBAND
2271 int security_ib_pkey_access(void *sec
, u64 subnet_prefix
, u16 pkey
)
2273 return call_int_hook(ib_pkey_access
, 0, sec
, subnet_prefix
, pkey
);
2275 EXPORT_SYMBOL(security_ib_pkey_access
);
2277 int security_ib_endport_manage_subnet(void *sec
, const char *dev_name
, u8 port_num
)
2279 return call_int_hook(ib_endport_manage_subnet
, 0, sec
, dev_name
, port_num
);
2281 EXPORT_SYMBOL(security_ib_endport_manage_subnet
);
2283 int security_ib_alloc_security(void **sec
)
2285 return call_int_hook(ib_alloc_security
, 0, sec
);
2287 EXPORT_SYMBOL(security_ib_alloc_security
);
2289 void security_ib_free_security(void *sec
)
2291 call_void_hook(ib_free_security
, sec
);
2293 EXPORT_SYMBOL(security_ib_free_security
);
2294 #endif /* CONFIG_SECURITY_INFINIBAND */
2296 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2298 int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
,
2299 struct xfrm_user_sec_ctx
*sec_ctx
,
2302 return call_int_hook(xfrm_policy_alloc_security
, 0, ctxp
, sec_ctx
, gfp
);
2304 EXPORT_SYMBOL(security_xfrm_policy_alloc
);
2306 int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old_ctx
,
2307 struct xfrm_sec_ctx
**new_ctxp
)
2309 return call_int_hook(xfrm_policy_clone_security
, 0, old_ctx
, new_ctxp
);
2312 void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
)
2314 call_void_hook(xfrm_policy_free_security
, ctx
);
2316 EXPORT_SYMBOL(security_xfrm_policy_free
);
2318 int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
)
2320 return call_int_hook(xfrm_policy_delete_security
, 0, ctx
);
2323 int security_xfrm_state_alloc(struct xfrm_state
*x
,
2324 struct xfrm_user_sec_ctx
*sec_ctx
)
2326 return call_int_hook(xfrm_state_alloc
, 0, x
, sec_ctx
);
2328 EXPORT_SYMBOL(security_xfrm_state_alloc
);
2330 int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2331 struct xfrm_sec_ctx
*polsec
, u32 secid
)
2333 return call_int_hook(xfrm_state_alloc_acquire
, 0, x
, polsec
, secid
);
2336 int security_xfrm_state_delete(struct xfrm_state
*x
)
2338 return call_int_hook(xfrm_state_delete_security
, 0, x
);
2340 EXPORT_SYMBOL(security_xfrm_state_delete
);
2342 void security_xfrm_state_free(struct xfrm_state
*x
)
2344 call_void_hook(xfrm_state_free_security
, x
);
2347 int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
)
2349 return call_int_hook(xfrm_policy_lookup
, 0, ctx
, fl_secid
, dir
);
2352 int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2353 struct xfrm_policy
*xp
,
2354 const struct flowi
*fl
)
2356 struct security_hook_list
*hp
;
2360 * Since this function is expected to return 0 or 1, the judgment
2361 * becomes difficult if multiple LSMs supply this call. Fortunately,
2362 * we can use the first LSM's judgment because currently only SELinux
2363 * supplies this call.
2365 * For speed optimization, we explicitly break the loop rather than
2368 list_for_each_entry(hp
, &security_hook_heads
.xfrm_state_pol_flow_match
,
2370 rc
= hp
->hook
.xfrm_state_pol_flow_match(x
, xp
, fl
);
2376 int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
)
2378 return call_int_hook(xfrm_decode_session
, 0, skb
, secid
, 1);
2381 void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi
*fl
)
2383 int rc
= call_int_hook(xfrm_decode_session
, 0, skb
, &fl
->flowi_secid
,
2388 EXPORT_SYMBOL(security_skb_classify_flow
);
2390 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2394 int security_key_alloc(struct key
*key
, const struct cred
*cred
,
2395 unsigned long flags
)
2397 int rc
= lsm_key_alloc(key
);
2401 rc
= call_int_hook(key_alloc
, 0, key
, cred
, flags
);
2403 security_key_free(key
);
2407 void security_key_free(struct key
*key
)
2409 call_void_hook(key_free
, key
);
2410 kfree(key
->security
);
2411 key
->security
= NULL
;
2414 int security_key_permission(key_ref_t key_ref
,
2415 const struct cred
*cred
, unsigned perm
)
2417 return call_int_hook(key_permission
, 0, key_ref
, cred
, perm
);
2420 int security_key_getsecurity(struct key
*key
, char **_buffer
)
2423 return call_int_hook(key_getsecurity
, 0, key
, _buffer
);
2426 #endif /* CONFIG_KEYS */
2430 int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
, void **lsmrule
)
2432 return call_int_hook(audit_rule_init
, 0, field
, op
, rulestr
, lsmrule
);
2435 int security_audit_rule_known(struct audit_krule
*krule
)
2437 return call_int_hook(audit_rule_known
, 0, krule
);
2440 void security_audit_rule_free(void *lsmrule
)
2442 call_void_hook(audit_rule_free
, lsmrule
);
2445 int security_audit_rule_match(u32 secid
, u32 field
, u32 op
, void *lsmrule
,
2446 struct audit_context
*actx
)
2448 return call_int_hook(audit_rule_match
, 0, secid
, field
, op
, lsmrule
,
2451 #endif /* CONFIG_AUDIT */
2453 #ifdef CONFIG_BPF_SYSCALL
2454 int security_bpf(int cmd
, union bpf_attr
*attr
, unsigned int size
)
2456 return call_int_hook(bpf
, 0, cmd
, attr
, size
);
2458 int security_bpf_map(struct bpf_map
*map
, fmode_t fmode
)
2460 return call_int_hook(bpf_map
, 0, map
, fmode
);
2462 int security_bpf_prog(struct bpf_prog
*prog
)
2464 return call_int_hook(bpf_prog
, 0, prog
);
2466 int security_bpf_map_alloc(struct bpf_map
*map
)
2468 return call_int_hook(bpf_map_alloc_security
, 0, map
);
2470 int security_bpf_prog_alloc(struct bpf_prog_aux
*aux
)
2472 return call_int_hook(bpf_prog_alloc_security
, 0, aux
);
2474 void security_bpf_map_free(struct bpf_map
*map
)
2476 call_void_hook(bpf_map_free_security
, map
);
2478 void security_bpf_prog_free(struct bpf_prog_aux
*aux
)
2480 call_void_hook(bpf_prog_free_security
, aux
);
2482 #endif /* CONFIG_BPF_SYSCALL */