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>
33 #define MAX_LSM_EVM_XATTR 2
35 /* Maximum number of letters for an LSM name string */
36 #define SECURITY_NAME_MAX 10
38 struct security_hook_heads security_hook_heads __lsm_ro_after_init
;
39 static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain
);
42 /* Boot-time LSM user choice */
43 static __initdata
char chosen_lsm
[SECURITY_NAME_MAX
+ 1] =
44 CONFIG_DEFAULT_SECURITY
;
46 static void __init
do_security_initcalls(void)
49 call
= __security_initcall_start
;
50 while (call
< __security_initcall_end
) {
57 * security_init - initializes the security framework
59 * This should be called early in the kernel initialization sequence.
61 int __init
security_init(void)
64 struct list_head
*list
= (struct list_head
*) &security_hook_heads
;
66 for (i
= 0; i
< sizeof(security_hook_heads
) / sizeof(struct list_head
);
68 INIT_LIST_HEAD(&list
[i
]);
69 pr_info("Security Framework initialized\n");
72 * Load minor LSMs, with the capability module always first.
74 capability_add_hooks();
79 * Load all the remaining security modules.
81 do_security_initcalls();
86 /* Save user chosen LSM */
87 static int __init
choose_lsm(char *str
)
89 strncpy(chosen_lsm
, str
, SECURITY_NAME_MAX
);
92 __setup("security=", choose_lsm
);
94 static bool match_last_lsm(const char *list
, const char *lsm
)
98 if (WARN_ON(!list
|| !lsm
))
100 last
= strrchr(list
, ',');
102 /* Pass the comma, strcmp() will check for '\0' */
106 return !strcmp(last
, lsm
);
109 static int lsm_append(char *new, char **result
)
113 if (*result
== NULL
) {
114 *result
= kstrdup(new, GFP_KERNEL
);
116 /* Check if it is the last registered name */
117 if (match_last_lsm(*result
, new))
119 cp
= kasprintf(GFP_KERNEL
, "%s,%s", *result
, new);
129 * security_module_enable - Load given security module on boot ?
130 * @module: the name of the module
132 * Each LSM must pass this method before registering its own operations
133 * to avoid security registration races. This method may also be used
134 * to check if your LSM is currently loaded during kernel initialization.
140 * - The passed LSM is the one chosen by user at boot time,
141 * - or the passed LSM is configured as the default and the user did not
142 * choose an alternate LSM at boot time.
144 * Otherwise, return false.
146 int __init
security_module_enable(const char *module
)
148 return !strcmp(module
, chosen_lsm
);
152 * security_add_hooks - Add a modules hooks to the hook lists.
153 * @hooks: the hooks to add
154 * @count: the number of hooks to add
155 * @lsm: the name of the security module
157 * Each LSM has to register its hooks with the infrastructure.
159 void __init
security_add_hooks(struct security_hook_list
*hooks
, int count
,
164 for (i
= 0; i
< count
; i
++) {
166 list_add_tail_rcu(&hooks
[i
].list
, hooks
[i
].head
);
168 if (lsm_append(lsm
, &lsm_names
) < 0)
169 panic("%s - Cannot get early memory.\n", __func__
);
172 int call_lsm_notifier(enum lsm_event event
, void *data
)
174 return atomic_notifier_call_chain(&lsm_notifier_chain
, event
, data
);
176 EXPORT_SYMBOL(call_lsm_notifier
);
178 int register_lsm_notifier(struct notifier_block
*nb
)
180 return atomic_notifier_chain_register(&lsm_notifier_chain
, nb
);
182 EXPORT_SYMBOL(register_lsm_notifier
);
184 int unregister_lsm_notifier(struct notifier_block
*nb
)
186 return atomic_notifier_chain_unregister(&lsm_notifier_chain
, nb
);
188 EXPORT_SYMBOL(unregister_lsm_notifier
);
191 * Hook list operation macros.
194 * This is a hook that does not return a value.
197 * This is a hook that returns a value.
200 #define call_void_hook(FUNC, ...) \
202 struct security_hook_list *P; \
204 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
205 P->hook.FUNC(__VA_ARGS__); \
208 #define call_int_hook(FUNC, IRC, ...) ({ \
211 struct security_hook_list *P; \
213 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
214 RC = P->hook.FUNC(__VA_ARGS__); \
222 /* Security operations */
224 int security_binder_set_context_mgr(struct task_struct
*mgr
)
226 return call_int_hook(binder_set_context_mgr
, 0, mgr
);
229 int security_binder_transaction(struct task_struct
*from
,
230 struct task_struct
*to
)
232 return call_int_hook(binder_transaction
, 0, from
, to
);
235 int security_binder_transfer_binder(struct task_struct
*from
,
236 struct task_struct
*to
)
238 return call_int_hook(binder_transfer_binder
, 0, from
, to
);
241 int security_binder_transfer_file(struct task_struct
*from
,
242 struct task_struct
*to
, struct file
*file
)
244 return call_int_hook(binder_transfer_file
, 0, from
, to
, file
);
247 int security_ptrace_access_check(struct task_struct
*child
, unsigned int mode
)
249 return call_int_hook(ptrace_access_check
, 0, child
, mode
);
252 int security_ptrace_traceme(struct task_struct
*parent
)
254 return call_int_hook(ptrace_traceme
, 0, parent
);
257 int security_capget(struct task_struct
*target
,
258 kernel_cap_t
*effective
,
259 kernel_cap_t
*inheritable
,
260 kernel_cap_t
*permitted
)
262 return call_int_hook(capget
, 0, target
,
263 effective
, inheritable
, permitted
);
266 int security_capset(struct cred
*new, const struct cred
*old
,
267 const kernel_cap_t
*effective
,
268 const kernel_cap_t
*inheritable
,
269 const kernel_cap_t
*permitted
)
271 return call_int_hook(capset
, 0, new, old
,
272 effective
, inheritable
, permitted
);
275 int security_capable(const struct cred
*cred
, struct user_namespace
*ns
,
278 return call_int_hook(capable
, 0, cred
, ns
, cap
, SECURITY_CAP_AUDIT
);
281 int security_capable_noaudit(const struct cred
*cred
, struct user_namespace
*ns
,
284 return call_int_hook(capable
, 0, cred
, ns
, cap
, SECURITY_CAP_NOAUDIT
);
287 int security_quotactl(int cmds
, int type
, int id
, struct super_block
*sb
)
289 return call_int_hook(quotactl
, 0, cmds
, type
, id
, sb
);
292 int security_quota_on(struct dentry
*dentry
)
294 return call_int_hook(quota_on
, 0, dentry
);
297 int security_syslog(int type
)
299 return call_int_hook(syslog
, 0, type
);
302 int security_settime64(const struct timespec64
*ts
, const struct timezone
*tz
)
304 return call_int_hook(settime
, 0, ts
, tz
);
307 int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
)
309 struct security_hook_list
*hp
;
310 int cap_sys_admin
= 1;
314 * The module will respond with a positive value if
315 * it thinks the __vm_enough_memory() call should be
316 * made with the cap_sys_admin set. If all of the modules
317 * agree that it should be set it will. If any module
318 * thinks it should not be set it won't.
320 list_for_each_entry(hp
, &security_hook_heads
.vm_enough_memory
, list
) {
321 rc
= hp
->hook
.vm_enough_memory(mm
, pages
);
327 return __vm_enough_memory(mm
, pages
, cap_sys_admin
);
330 int security_bprm_set_creds(struct linux_binprm
*bprm
)
332 return call_int_hook(bprm_set_creds
, 0, bprm
);
335 int security_bprm_check(struct linux_binprm
*bprm
)
339 ret
= call_int_hook(bprm_check_security
, 0, bprm
);
342 return ima_bprm_check(bprm
);
345 void security_bprm_committing_creds(struct linux_binprm
*bprm
)
347 call_void_hook(bprm_committing_creds
, bprm
);
350 void security_bprm_committed_creds(struct linux_binprm
*bprm
)
352 call_void_hook(bprm_committed_creds
, bprm
);
355 int security_sb_alloc(struct super_block
*sb
)
357 return call_int_hook(sb_alloc_security
, 0, sb
);
360 void security_sb_free(struct super_block
*sb
)
362 call_void_hook(sb_free_security
, sb
);
365 int security_sb_copy_data(char *orig
, char *copy
)
367 return call_int_hook(sb_copy_data
, 0, orig
, copy
);
369 EXPORT_SYMBOL(security_sb_copy_data
);
371 int security_sb_remount(struct super_block
*sb
, void *data
)
373 return call_int_hook(sb_remount
, 0, sb
, data
);
376 int security_sb_kern_mount(struct super_block
*sb
, int flags
, void *data
)
378 return call_int_hook(sb_kern_mount
, 0, sb
, flags
, data
);
381 int security_sb_show_options(struct seq_file
*m
, struct super_block
*sb
)
383 return call_int_hook(sb_show_options
, 0, m
, sb
);
386 int security_sb_statfs(struct dentry
*dentry
)
388 return call_int_hook(sb_statfs
, 0, dentry
);
391 int security_sb_mount(const char *dev_name
, const struct path
*path
,
392 const char *type
, unsigned long flags
, void *data
)
394 return call_int_hook(sb_mount
, 0, dev_name
, path
, type
, flags
, data
);
397 int security_sb_umount(struct vfsmount
*mnt
, int flags
)
399 return call_int_hook(sb_umount
, 0, mnt
, flags
);
402 int security_sb_pivotroot(const struct path
*old_path
, const struct path
*new_path
)
404 return call_int_hook(sb_pivotroot
, 0, old_path
, new_path
);
407 int security_sb_set_mnt_opts(struct super_block
*sb
,
408 struct security_mnt_opts
*opts
,
409 unsigned long kern_flags
,
410 unsigned long *set_kern_flags
)
412 return call_int_hook(sb_set_mnt_opts
,
413 opts
->num_mnt_opts
? -EOPNOTSUPP
: 0, sb
,
414 opts
, kern_flags
, set_kern_flags
);
416 EXPORT_SYMBOL(security_sb_set_mnt_opts
);
418 int security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
419 struct super_block
*newsb
,
420 unsigned long kern_flags
,
421 unsigned long *set_kern_flags
)
423 return call_int_hook(sb_clone_mnt_opts
, 0, oldsb
, newsb
,
424 kern_flags
, set_kern_flags
);
426 EXPORT_SYMBOL(security_sb_clone_mnt_opts
);
428 int security_sb_parse_opts_str(char *options
, struct security_mnt_opts
*opts
)
430 return call_int_hook(sb_parse_opts_str
, 0, options
, opts
);
432 EXPORT_SYMBOL(security_sb_parse_opts_str
);
434 int security_inode_alloc(struct inode
*inode
)
436 inode
->i_security
= NULL
;
437 return call_int_hook(inode_alloc_security
, 0, inode
);
440 void security_inode_free(struct inode
*inode
)
442 integrity_inode_free(inode
);
443 call_void_hook(inode_free_security
, inode
);
446 int security_dentry_init_security(struct dentry
*dentry
, int mode
,
447 const struct qstr
*name
, void **ctx
,
450 return call_int_hook(dentry_init_security
, -EOPNOTSUPP
, dentry
, mode
,
453 EXPORT_SYMBOL(security_dentry_init_security
);
455 int security_dentry_create_files_as(struct dentry
*dentry
, int mode
,
457 const struct cred
*old
, struct cred
*new)
459 return call_int_hook(dentry_create_files_as
, 0, dentry
, mode
,
462 EXPORT_SYMBOL(security_dentry_create_files_as
);
464 int security_inode_init_security(struct inode
*inode
, struct inode
*dir
,
465 const struct qstr
*qstr
,
466 const initxattrs initxattrs
, void *fs_data
)
468 struct xattr new_xattrs
[MAX_LSM_EVM_XATTR
+ 1];
469 struct xattr
*lsm_xattr
, *evm_xattr
, *xattr
;
472 if (unlikely(IS_PRIVATE(inode
)))
476 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
,
477 dir
, qstr
, NULL
, NULL
, NULL
);
478 memset(new_xattrs
, 0, sizeof(new_xattrs
));
479 lsm_xattr
= new_xattrs
;
480 ret
= call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
, qstr
,
483 &lsm_xattr
->value_len
);
487 evm_xattr
= lsm_xattr
+ 1;
488 ret
= evm_inode_init_security(inode
, lsm_xattr
, evm_xattr
);
491 ret
= initxattrs(inode
, new_xattrs
, fs_data
);
493 for (xattr
= new_xattrs
; xattr
->value
!= NULL
; xattr
++)
495 return (ret
== -EOPNOTSUPP
) ? 0 : ret
;
497 EXPORT_SYMBOL(security_inode_init_security
);
499 int security_old_inode_init_security(struct inode
*inode
, struct inode
*dir
,
500 const struct qstr
*qstr
, const char **name
,
501 void **value
, size_t *len
)
503 if (unlikely(IS_PRIVATE(inode
)))
505 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
,
506 qstr
, name
, value
, len
);
508 EXPORT_SYMBOL(security_old_inode_init_security
);
510 #ifdef CONFIG_SECURITY_PATH
511 int security_path_mknod(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
,
514 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
516 return call_int_hook(path_mknod
, 0, dir
, dentry
, mode
, dev
);
518 EXPORT_SYMBOL(security_path_mknod
);
520 int security_path_mkdir(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
)
522 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
524 return call_int_hook(path_mkdir
, 0, dir
, dentry
, mode
);
526 EXPORT_SYMBOL(security_path_mkdir
);
528 int security_path_rmdir(const struct path
*dir
, struct dentry
*dentry
)
530 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
532 return call_int_hook(path_rmdir
, 0, dir
, dentry
);
535 int security_path_unlink(const struct path
*dir
, struct dentry
*dentry
)
537 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
539 return call_int_hook(path_unlink
, 0, dir
, dentry
);
541 EXPORT_SYMBOL(security_path_unlink
);
543 int security_path_symlink(const struct path
*dir
, struct dentry
*dentry
,
544 const char *old_name
)
546 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
548 return call_int_hook(path_symlink
, 0, dir
, dentry
, old_name
);
551 int security_path_link(struct dentry
*old_dentry
, const struct path
*new_dir
,
552 struct dentry
*new_dentry
)
554 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
556 return call_int_hook(path_link
, 0, old_dentry
, new_dir
, new_dentry
);
559 int security_path_rename(const struct path
*old_dir
, struct dentry
*old_dentry
,
560 const struct path
*new_dir
, struct dentry
*new_dentry
,
563 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
564 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
567 if (flags
& RENAME_EXCHANGE
) {
568 int err
= call_int_hook(path_rename
, 0, new_dir
, new_dentry
,
569 old_dir
, old_dentry
);
574 return call_int_hook(path_rename
, 0, old_dir
, old_dentry
, new_dir
,
577 EXPORT_SYMBOL(security_path_rename
);
579 int security_path_truncate(const struct path
*path
)
581 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
583 return call_int_hook(path_truncate
, 0, path
);
586 int security_path_chmod(const struct path
*path
, umode_t mode
)
588 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
590 return call_int_hook(path_chmod
, 0, path
, mode
);
593 int security_path_chown(const struct path
*path
, kuid_t uid
, kgid_t gid
)
595 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
597 return call_int_hook(path_chown
, 0, path
, uid
, gid
);
599 EXPORT_SYMBOL(security_path_chown
);
601 int security_path_chroot(const struct path
*path
)
603 return call_int_hook(path_chroot
, 0, path
);
607 int security_inode_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
609 if (unlikely(IS_PRIVATE(dir
)))
611 return call_int_hook(inode_create
, 0, dir
, dentry
, mode
);
613 EXPORT_SYMBOL_GPL(security_inode_create
);
615 int security_inode_link(struct dentry
*old_dentry
, struct inode
*dir
,
616 struct dentry
*new_dentry
)
618 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
620 return call_int_hook(inode_link
, 0, old_dentry
, dir
, new_dentry
);
623 int security_inode_unlink(struct inode
*dir
, struct dentry
*dentry
)
625 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
627 return call_int_hook(inode_unlink
, 0, dir
, dentry
);
630 int security_inode_symlink(struct inode
*dir
, struct dentry
*dentry
,
631 const char *old_name
)
633 if (unlikely(IS_PRIVATE(dir
)))
635 return call_int_hook(inode_symlink
, 0, dir
, dentry
, old_name
);
638 int security_inode_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
640 if (unlikely(IS_PRIVATE(dir
)))
642 return call_int_hook(inode_mkdir
, 0, dir
, dentry
, mode
);
644 EXPORT_SYMBOL_GPL(security_inode_mkdir
);
646 int security_inode_rmdir(struct inode
*dir
, struct dentry
*dentry
)
648 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
650 return call_int_hook(inode_rmdir
, 0, dir
, dentry
);
653 int security_inode_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
, dev_t dev
)
655 if (unlikely(IS_PRIVATE(dir
)))
657 return call_int_hook(inode_mknod
, 0, dir
, dentry
, mode
, dev
);
660 int security_inode_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
661 struct inode
*new_dir
, struct dentry
*new_dentry
,
664 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
665 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
668 if (flags
& RENAME_EXCHANGE
) {
669 int err
= call_int_hook(inode_rename
, 0, new_dir
, new_dentry
,
670 old_dir
, old_dentry
);
675 return call_int_hook(inode_rename
, 0, old_dir
, old_dentry
,
676 new_dir
, new_dentry
);
679 int security_inode_readlink(struct dentry
*dentry
)
681 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
683 return call_int_hook(inode_readlink
, 0, dentry
);
686 int security_inode_follow_link(struct dentry
*dentry
, struct inode
*inode
,
689 if (unlikely(IS_PRIVATE(inode
)))
691 return call_int_hook(inode_follow_link
, 0, dentry
, inode
, rcu
);
694 int security_inode_permission(struct inode
*inode
, int mask
)
696 if (unlikely(IS_PRIVATE(inode
)))
698 return call_int_hook(inode_permission
, 0, inode
, mask
);
701 int security_inode_setattr(struct dentry
*dentry
, struct iattr
*attr
)
705 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
707 ret
= call_int_hook(inode_setattr
, 0, dentry
, attr
);
710 return evm_inode_setattr(dentry
, attr
);
712 EXPORT_SYMBOL_GPL(security_inode_setattr
);
714 int security_inode_getattr(const struct path
*path
)
716 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
718 return call_int_hook(inode_getattr
, 0, path
);
721 int security_inode_setxattr(struct dentry
*dentry
, const char *name
,
722 const void *value
, size_t size
, int flags
)
726 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
729 * SELinux and Smack integrate the cap call,
730 * so assume that all LSMs supplying this call do so.
732 ret
= call_int_hook(inode_setxattr
, 1, dentry
, name
, value
, size
,
736 ret
= cap_inode_setxattr(dentry
, name
, value
, size
, flags
);
739 ret
= ima_inode_setxattr(dentry
, name
, value
, size
);
742 return evm_inode_setxattr(dentry
, name
, value
, size
);
745 void security_inode_post_setxattr(struct dentry
*dentry
, const char *name
,
746 const void *value
, size_t size
, int flags
)
748 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
750 call_void_hook(inode_post_setxattr
, dentry
, name
, value
, size
, flags
);
751 evm_inode_post_setxattr(dentry
, name
, value
, size
);
754 int security_inode_getxattr(struct dentry
*dentry
, const char *name
)
756 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
758 return call_int_hook(inode_getxattr
, 0, dentry
, name
);
761 int security_inode_listxattr(struct dentry
*dentry
)
763 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
765 return call_int_hook(inode_listxattr
, 0, dentry
);
768 int security_inode_removexattr(struct dentry
*dentry
, const char *name
)
772 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
775 * SELinux and Smack integrate the cap call,
776 * so assume that all LSMs supplying this call do so.
778 ret
= call_int_hook(inode_removexattr
, 1, dentry
, name
);
780 ret
= cap_inode_removexattr(dentry
, name
);
783 ret
= ima_inode_removexattr(dentry
, name
);
786 return evm_inode_removexattr(dentry
, name
);
789 int security_inode_need_killpriv(struct dentry
*dentry
)
791 return call_int_hook(inode_need_killpriv
, 0, dentry
);
794 int security_inode_killpriv(struct dentry
*dentry
)
796 return call_int_hook(inode_killpriv
, 0, dentry
);
799 int security_inode_getsecurity(struct inode
*inode
, const char *name
, void **buffer
, bool alloc
)
801 struct security_hook_list
*hp
;
804 if (unlikely(IS_PRIVATE(inode
)))
807 * Only one module will provide an attribute with a given name.
809 list_for_each_entry(hp
, &security_hook_heads
.inode_getsecurity
, list
) {
810 rc
= hp
->hook
.inode_getsecurity(inode
, name
, buffer
, alloc
);
811 if (rc
!= -EOPNOTSUPP
)
817 int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
)
819 struct security_hook_list
*hp
;
822 if (unlikely(IS_PRIVATE(inode
)))
825 * Only one module will provide an attribute with a given name.
827 list_for_each_entry(hp
, &security_hook_heads
.inode_setsecurity
, list
) {
828 rc
= hp
->hook
.inode_setsecurity(inode
, name
, value
, size
,
830 if (rc
!= -EOPNOTSUPP
)
836 int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
)
838 if (unlikely(IS_PRIVATE(inode
)))
840 return call_int_hook(inode_listsecurity
, 0, inode
, buffer
, buffer_size
);
842 EXPORT_SYMBOL(security_inode_listsecurity
);
844 void security_inode_getsecid(struct inode
*inode
, u32
*secid
)
846 call_void_hook(inode_getsecid
, inode
, secid
);
849 int security_inode_copy_up(struct dentry
*src
, struct cred
**new)
851 return call_int_hook(inode_copy_up
, 0, src
, new);
853 EXPORT_SYMBOL(security_inode_copy_up
);
855 int security_inode_copy_up_xattr(const char *name
)
857 return call_int_hook(inode_copy_up_xattr
, -EOPNOTSUPP
, name
);
859 EXPORT_SYMBOL(security_inode_copy_up_xattr
);
861 int security_file_permission(struct file
*file
, int mask
)
865 ret
= call_int_hook(file_permission
, 0, file
, mask
);
869 return fsnotify_perm(file
, mask
);
872 int security_file_alloc(struct file
*file
)
874 return call_int_hook(file_alloc_security
, 0, file
);
877 void security_file_free(struct file
*file
)
879 call_void_hook(file_free_security
, file
);
882 int security_file_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
884 return call_int_hook(file_ioctl
, 0, file
, cmd
, arg
);
887 static inline unsigned long mmap_prot(struct file
*file
, unsigned long prot
)
890 * Does we have PROT_READ and does the application expect
891 * it to imply PROT_EXEC? If not, nothing to talk about...
893 if ((prot
& (PROT_READ
| PROT_EXEC
)) != PROT_READ
)
895 if (!(current
->personality
& READ_IMPLIES_EXEC
))
898 * if that's an anonymous mapping, let it.
901 return prot
| PROT_EXEC
;
903 * ditto if it's not on noexec mount, except that on !MMU we need
904 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
906 if (!path_noexec(&file
->f_path
)) {
908 if (file
->f_op
->mmap_capabilities
) {
909 unsigned caps
= file
->f_op
->mmap_capabilities(file
);
910 if (!(caps
& NOMMU_MAP_EXEC
))
914 return prot
| PROT_EXEC
;
916 /* anything on noexec mount won't get PROT_EXEC */
920 int security_mmap_file(struct file
*file
, unsigned long prot
,
924 ret
= call_int_hook(mmap_file
, 0, file
, prot
,
925 mmap_prot(file
, prot
), flags
);
928 return ima_file_mmap(file
, prot
);
931 int security_mmap_addr(unsigned long addr
)
933 return call_int_hook(mmap_addr
, 0, addr
);
936 int security_file_mprotect(struct vm_area_struct
*vma
, unsigned long reqprot
,
939 return call_int_hook(file_mprotect
, 0, vma
, reqprot
, prot
);
942 int security_file_lock(struct file
*file
, unsigned int cmd
)
944 return call_int_hook(file_lock
, 0, file
, cmd
);
947 int security_file_fcntl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
949 return call_int_hook(file_fcntl
, 0, file
, cmd
, arg
);
952 void security_file_set_fowner(struct file
*file
)
954 call_void_hook(file_set_fowner
, file
);
957 int security_file_send_sigiotask(struct task_struct
*tsk
,
958 struct fown_struct
*fown
, int sig
)
960 return call_int_hook(file_send_sigiotask
, 0, tsk
, fown
, sig
);
963 int security_file_receive(struct file
*file
)
965 return call_int_hook(file_receive
, 0, file
);
968 int security_file_open(struct file
*file
, const struct cred
*cred
)
972 ret
= call_int_hook(file_open
, 0, file
, cred
);
976 return fsnotify_perm(file
, MAY_OPEN
);
979 int security_task_alloc(struct task_struct
*task
, unsigned long clone_flags
)
981 return call_int_hook(task_alloc
, 0, task
, clone_flags
);
984 void security_task_free(struct task_struct
*task
)
986 call_void_hook(task_free
, task
);
989 int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
)
991 return call_int_hook(cred_alloc_blank
, 0, cred
, gfp
);
994 void security_cred_free(struct cred
*cred
)
996 call_void_hook(cred_free
, cred
);
999 int security_prepare_creds(struct cred
*new, const struct cred
*old
, gfp_t gfp
)
1001 return call_int_hook(cred_prepare
, 0, new, old
, gfp
);
1004 void security_transfer_creds(struct cred
*new, const struct cred
*old
)
1006 call_void_hook(cred_transfer
, new, old
);
1009 int security_kernel_act_as(struct cred
*new, u32 secid
)
1011 return call_int_hook(kernel_act_as
, 0, new, secid
);
1014 int security_kernel_create_files_as(struct cred
*new, struct inode
*inode
)
1016 return call_int_hook(kernel_create_files_as
, 0, new, inode
);
1019 int security_kernel_module_request(char *kmod_name
)
1021 return call_int_hook(kernel_module_request
, 0, kmod_name
);
1024 int security_kernel_read_file(struct file
*file
, enum kernel_read_file_id id
)
1028 ret
= call_int_hook(kernel_read_file
, 0, file
, id
);
1031 return ima_read_file(file
, id
);
1033 EXPORT_SYMBOL_GPL(security_kernel_read_file
);
1035 int security_kernel_post_read_file(struct file
*file
, char *buf
, loff_t size
,
1036 enum kernel_read_file_id id
)
1040 ret
= call_int_hook(kernel_post_read_file
, 0, file
, buf
, size
, id
);
1043 return ima_post_read_file(file
, buf
, size
, id
);
1045 EXPORT_SYMBOL_GPL(security_kernel_post_read_file
);
1047 int security_task_fix_setuid(struct cred
*new, const struct cred
*old
,
1050 return call_int_hook(task_fix_setuid
, 0, new, old
, flags
);
1053 int security_task_setpgid(struct task_struct
*p
, pid_t pgid
)
1055 return call_int_hook(task_setpgid
, 0, p
, pgid
);
1058 int security_task_getpgid(struct task_struct
*p
)
1060 return call_int_hook(task_getpgid
, 0, p
);
1063 int security_task_getsid(struct task_struct
*p
)
1065 return call_int_hook(task_getsid
, 0, p
);
1068 void security_task_getsecid(struct task_struct
*p
, u32
*secid
)
1071 call_void_hook(task_getsecid
, p
, secid
);
1073 EXPORT_SYMBOL(security_task_getsecid
);
1075 int security_task_setnice(struct task_struct
*p
, int nice
)
1077 return call_int_hook(task_setnice
, 0, p
, nice
);
1080 int security_task_setioprio(struct task_struct
*p
, int ioprio
)
1082 return call_int_hook(task_setioprio
, 0, p
, ioprio
);
1085 int security_task_getioprio(struct task_struct
*p
)
1087 return call_int_hook(task_getioprio
, 0, p
);
1090 int security_task_prlimit(const struct cred
*cred
, const struct cred
*tcred
,
1093 return call_int_hook(task_prlimit
, 0, cred
, tcred
, flags
);
1096 int security_task_setrlimit(struct task_struct
*p
, unsigned int resource
,
1097 struct rlimit
*new_rlim
)
1099 return call_int_hook(task_setrlimit
, 0, p
, resource
, new_rlim
);
1102 int security_task_setscheduler(struct task_struct
*p
)
1104 return call_int_hook(task_setscheduler
, 0, p
);
1107 int security_task_getscheduler(struct task_struct
*p
)
1109 return call_int_hook(task_getscheduler
, 0, p
);
1112 int security_task_movememory(struct task_struct
*p
)
1114 return call_int_hook(task_movememory
, 0, p
);
1117 int security_task_kill(struct task_struct
*p
, struct siginfo
*info
,
1120 return call_int_hook(task_kill
, 0, p
, info
, sig
, secid
);
1123 int security_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1124 unsigned long arg4
, unsigned long arg5
)
1128 struct security_hook_list
*hp
;
1130 list_for_each_entry(hp
, &security_hook_heads
.task_prctl
, list
) {
1131 thisrc
= hp
->hook
.task_prctl(option
, arg2
, arg3
, arg4
, arg5
);
1132 if (thisrc
!= -ENOSYS
) {
1141 void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
)
1143 call_void_hook(task_to_inode
, p
, inode
);
1146 int security_ipc_permission(struct kern_ipc_perm
*ipcp
, short flag
)
1148 return call_int_hook(ipc_permission
, 0, ipcp
, flag
);
1151 void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
)
1154 call_void_hook(ipc_getsecid
, ipcp
, secid
);
1157 int security_msg_msg_alloc(struct msg_msg
*msg
)
1159 return call_int_hook(msg_msg_alloc_security
, 0, msg
);
1162 void security_msg_msg_free(struct msg_msg
*msg
)
1164 call_void_hook(msg_msg_free_security
, msg
);
1167 int security_msg_queue_alloc(struct msg_queue
*msq
)
1169 return call_int_hook(msg_queue_alloc_security
, 0, msq
);
1172 void security_msg_queue_free(struct msg_queue
*msq
)
1174 call_void_hook(msg_queue_free_security
, msq
);
1177 int security_msg_queue_associate(struct msg_queue
*msq
, int msqflg
)
1179 return call_int_hook(msg_queue_associate
, 0, msq
, msqflg
);
1182 int security_msg_queue_msgctl(struct msg_queue
*msq
, int cmd
)
1184 return call_int_hook(msg_queue_msgctl
, 0, msq
, cmd
);
1187 int security_msg_queue_msgsnd(struct msg_queue
*msq
,
1188 struct msg_msg
*msg
, int msqflg
)
1190 return call_int_hook(msg_queue_msgsnd
, 0, msq
, msg
, msqflg
);
1193 int security_msg_queue_msgrcv(struct msg_queue
*msq
, struct msg_msg
*msg
,
1194 struct task_struct
*target
, long type
, int mode
)
1196 return call_int_hook(msg_queue_msgrcv
, 0, msq
, msg
, target
, type
, mode
);
1199 int security_shm_alloc(struct shmid_kernel
*shp
)
1201 return call_int_hook(shm_alloc_security
, 0, shp
);
1204 void security_shm_free(struct shmid_kernel
*shp
)
1206 call_void_hook(shm_free_security
, shp
);
1209 int security_shm_associate(struct shmid_kernel
*shp
, int shmflg
)
1211 return call_int_hook(shm_associate
, 0, shp
, shmflg
);
1214 int security_shm_shmctl(struct shmid_kernel
*shp
, int cmd
)
1216 return call_int_hook(shm_shmctl
, 0, shp
, cmd
);
1219 int security_shm_shmat(struct shmid_kernel
*shp
, char __user
*shmaddr
, int shmflg
)
1221 return call_int_hook(shm_shmat
, 0, shp
, shmaddr
, shmflg
);
1224 int security_sem_alloc(struct sem_array
*sma
)
1226 return call_int_hook(sem_alloc_security
, 0, sma
);
1229 void security_sem_free(struct sem_array
*sma
)
1231 call_void_hook(sem_free_security
, sma
);
1234 int security_sem_associate(struct sem_array
*sma
, int semflg
)
1236 return call_int_hook(sem_associate
, 0, sma
, semflg
);
1239 int security_sem_semctl(struct sem_array
*sma
, int cmd
)
1241 return call_int_hook(sem_semctl
, 0, sma
, cmd
);
1244 int security_sem_semop(struct sem_array
*sma
, struct sembuf
*sops
,
1245 unsigned nsops
, int alter
)
1247 return call_int_hook(sem_semop
, 0, sma
, sops
, nsops
, alter
);
1250 void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
)
1252 if (unlikely(inode
&& IS_PRIVATE(inode
)))
1254 call_void_hook(d_instantiate
, dentry
, inode
);
1256 EXPORT_SYMBOL(security_d_instantiate
);
1258 int security_getprocattr(struct task_struct
*p
, char *name
, char **value
)
1260 return call_int_hook(getprocattr
, -EINVAL
, p
, name
, value
);
1263 int security_setprocattr(const char *name
, void *value
, size_t size
)
1265 return call_int_hook(setprocattr
, -EINVAL
, name
, value
, size
);
1268 int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
)
1270 return call_int_hook(netlink_send
, 0, sk
, skb
);
1273 int security_ismaclabel(const char *name
)
1275 return call_int_hook(ismaclabel
, 0, name
);
1277 EXPORT_SYMBOL(security_ismaclabel
);
1279 int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
)
1281 return call_int_hook(secid_to_secctx
, -EOPNOTSUPP
, secid
, secdata
,
1284 EXPORT_SYMBOL(security_secid_to_secctx
);
1286 int security_secctx_to_secid(const char *secdata
, u32 seclen
, u32
*secid
)
1289 return call_int_hook(secctx_to_secid
, 0, secdata
, seclen
, secid
);
1291 EXPORT_SYMBOL(security_secctx_to_secid
);
1293 void security_release_secctx(char *secdata
, u32 seclen
)
1295 call_void_hook(release_secctx
, secdata
, seclen
);
1297 EXPORT_SYMBOL(security_release_secctx
);
1299 void security_inode_invalidate_secctx(struct inode
*inode
)
1301 call_void_hook(inode_invalidate_secctx
, inode
);
1303 EXPORT_SYMBOL(security_inode_invalidate_secctx
);
1305 int security_inode_notifysecctx(struct inode
*inode
, void *ctx
, u32 ctxlen
)
1307 return call_int_hook(inode_notifysecctx
, 0, inode
, ctx
, ctxlen
);
1309 EXPORT_SYMBOL(security_inode_notifysecctx
);
1311 int security_inode_setsecctx(struct dentry
*dentry
, void *ctx
, u32 ctxlen
)
1313 return call_int_hook(inode_setsecctx
, 0, dentry
, ctx
, ctxlen
);
1315 EXPORT_SYMBOL(security_inode_setsecctx
);
1317 int security_inode_getsecctx(struct inode
*inode
, void **ctx
, u32
*ctxlen
)
1319 return call_int_hook(inode_getsecctx
, -EOPNOTSUPP
, inode
, ctx
, ctxlen
);
1321 EXPORT_SYMBOL(security_inode_getsecctx
);
1323 #ifdef CONFIG_SECURITY_NETWORK
1325 int security_unix_stream_connect(struct sock
*sock
, struct sock
*other
, struct sock
*newsk
)
1327 return call_int_hook(unix_stream_connect
, 0, sock
, other
, newsk
);
1329 EXPORT_SYMBOL(security_unix_stream_connect
);
1331 int security_unix_may_send(struct socket
*sock
, struct socket
*other
)
1333 return call_int_hook(unix_may_send
, 0, sock
, other
);
1335 EXPORT_SYMBOL(security_unix_may_send
);
1337 int security_socket_create(int family
, int type
, int protocol
, int kern
)
1339 return call_int_hook(socket_create
, 0, family
, type
, protocol
, kern
);
1342 int security_socket_post_create(struct socket
*sock
, int family
,
1343 int type
, int protocol
, int kern
)
1345 return call_int_hook(socket_post_create
, 0, sock
, family
, type
,
1349 int security_socket_bind(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
1351 return call_int_hook(socket_bind
, 0, sock
, address
, addrlen
);
1354 int security_socket_connect(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
1356 return call_int_hook(socket_connect
, 0, sock
, address
, addrlen
);
1359 int security_socket_listen(struct socket
*sock
, int backlog
)
1361 return call_int_hook(socket_listen
, 0, sock
, backlog
);
1364 int security_socket_accept(struct socket
*sock
, struct socket
*newsock
)
1366 return call_int_hook(socket_accept
, 0, sock
, newsock
);
1369 int security_socket_sendmsg(struct socket
*sock
, struct msghdr
*msg
, int size
)
1371 return call_int_hook(socket_sendmsg
, 0, sock
, msg
, size
);
1374 int security_socket_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
1375 int size
, int flags
)
1377 return call_int_hook(socket_recvmsg
, 0, sock
, msg
, size
, flags
);
1380 int security_socket_getsockname(struct socket
*sock
)
1382 return call_int_hook(socket_getsockname
, 0, sock
);
1385 int security_socket_getpeername(struct socket
*sock
)
1387 return call_int_hook(socket_getpeername
, 0, sock
);
1390 int security_socket_getsockopt(struct socket
*sock
, int level
, int optname
)
1392 return call_int_hook(socket_getsockopt
, 0, sock
, level
, optname
);
1395 int security_socket_setsockopt(struct socket
*sock
, int level
, int optname
)
1397 return call_int_hook(socket_setsockopt
, 0, sock
, level
, optname
);
1400 int security_socket_shutdown(struct socket
*sock
, int how
)
1402 return call_int_hook(socket_shutdown
, 0, sock
, how
);
1405 int security_sock_rcv_skb(struct sock
*sk
, struct sk_buff
*skb
)
1407 return call_int_hook(socket_sock_rcv_skb
, 0, sk
, skb
);
1409 EXPORT_SYMBOL(security_sock_rcv_skb
);
1411 int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
1412 int __user
*optlen
, unsigned len
)
1414 return call_int_hook(socket_getpeersec_stream
, -ENOPROTOOPT
, sock
,
1415 optval
, optlen
, len
);
1418 int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
)
1420 return call_int_hook(socket_getpeersec_dgram
, -ENOPROTOOPT
, sock
,
1423 EXPORT_SYMBOL(security_socket_getpeersec_dgram
);
1425 int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
)
1427 return call_int_hook(sk_alloc_security
, 0, sk
, family
, priority
);
1430 void security_sk_free(struct sock
*sk
)
1432 call_void_hook(sk_free_security
, sk
);
1435 void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
)
1437 call_void_hook(sk_clone_security
, sk
, newsk
);
1439 EXPORT_SYMBOL(security_sk_clone
);
1441 void security_sk_classify_flow(struct sock
*sk
, struct flowi
*fl
)
1443 call_void_hook(sk_getsecid
, sk
, &fl
->flowi_secid
);
1445 EXPORT_SYMBOL(security_sk_classify_flow
);
1447 void security_req_classify_flow(const struct request_sock
*req
, struct flowi
*fl
)
1449 call_void_hook(req_classify_flow
, req
, fl
);
1451 EXPORT_SYMBOL(security_req_classify_flow
);
1453 void security_sock_graft(struct sock
*sk
, struct socket
*parent
)
1455 call_void_hook(sock_graft
, sk
, parent
);
1457 EXPORT_SYMBOL(security_sock_graft
);
1459 int security_inet_conn_request(struct sock
*sk
,
1460 struct sk_buff
*skb
, struct request_sock
*req
)
1462 return call_int_hook(inet_conn_request
, 0, sk
, skb
, req
);
1464 EXPORT_SYMBOL(security_inet_conn_request
);
1466 void security_inet_csk_clone(struct sock
*newsk
,
1467 const struct request_sock
*req
)
1469 call_void_hook(inet_csk_clone
, newsk
, req
);
1472 void security_inet_conn_established(struct sock
*sk
,
1473 struct sk_buff
*skb
)
1475 call_void_hook(inet_conn_established
, sk
, skb
);
1478 int security_secmark_relabel_packet(u32 secid
)
1480 return call_int_hook(secmark_relabel_packet
, 0, secid
);
1482 EXPORT_SYMBOL(security_secmark_relabel_packet
);
1484 void security_secmark_refcount_inc(void)
1486 call_void_hook(secmark_refcount_inc
);
1488 EXPORT_SYMBOL(security_secmark_refcount_inc
);
1490 void security_secmark_refcount_dec(void)
1492 call_void_hook(secmark_refcount_dec
);
1494 EXPORT_SYMBOL(security_secmark_refcount_dec
);
1496 int security_tun_dev_alloc_security(void **security
)
1498 return call_int_hook(tun_dev_alloc_security
, 0, security
);
1500 EXPORT_SYMBOL(security_tun_dev_alloc_security
);
1502 void security_tun_dev_free_security(void *security
)
1504 call_void_hook(tun_dev_free_security
, security
);
1506 EXPORT_SYMBOL(security_tun_dev_free_security
);
1508 int security_tun_dev_create(void)
1510 return call_int_hook(tun_dev_create
, 0);
1512 EXPORT_SYMBOL(security_tun_dev_create
);
1514 int security_tun_dev_attach_queue(void *security
)
1516 return call_int_hook(tun_dev_attach_queue
, 0, security
);
1518 EXPORT_SYMBOL(security_tun_dev_attach_queue
);
1520 int security_tun_dev_attach(struct sock
*sk
, void *security
)
1522 return call_int_hook(tun_dev_attach
, 0, sk
, security
);
1524 EXPORT_SYMBOL(security_tun_dev_attach
);
1526 int security_tun_dev_open(void *security
)
1528 return call_int_hook(tun_dev_open
, 0, security
);
1530 EXPORT_SYMBOL(security_tun_dev_open
);
1532 #endif /* CONFIG_SECURITY_NETWORK */
1534 #ifdef CONFIG_SECURITY_INFINIBAND
1536 int security_ib_pkey_access(void *sec
, u64 subnet_prefix
, u16 pkey
)
1538 return call_int_hook(ib_pkey_access
, 0, sec
, subnet_prefix
, pkey
);
1540 EXPORT_SYMBOL(security_ib_pkey_access
);
1542 int security_ib_endport_manage_subnet(void *sec
, const char *dev_name
, u8 port_num
)
1544 return call_int_hook(ib_endport_manage_subnet
, 0, sec
, dev_name
, port_num
);
1546 EXPORT_SYMBOL(security_ib_endport_manage_subnet
);
1548 int security_ib_alloc_security(void **sec
)
1550 return call_int_hook(ib_alloc_security
, 0, sec
);
1552 EXPORT_SYMBOL(security_ib_alloc_security
);
1554 void security_ib_free_security(void *sec
)
1556 call_void_hook(ib_free_security
, sec
);
1558 EXPORT_SYMBOL(security_ib_free_security
);
1559 #endif /* CONFIG_SECURITY_INFINIBAND */
1561 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1563 int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
,
1564 struct xfrm_user_sec_ctx
*sec_ctx
,
1567 return call_int_hook(xfrm_policy_alloc_security
, 0, ctxp
, sec_ctx
, gfp
);
1569 EXPORT_SYMBOL(security_xfrm_policy_alloc
);
1571 int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old_ctx
,
1572 struct xfrm_sec_ctx
**new_ctxp
)
1574 return call_int_hook(xfrm_policy_clone_security
, 0, old_ctx
, new_ctxp
);
1577 void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
)
1579 call_void_hook(xfrm_policy_free_security
, ctx
);
1581 EXPORT_SYMBOL(security_xfrm_policy_free
);
1583 int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
)
1585 return call_int_hook(xfrm_policy_delete_security
, 0, ctx
);
1588 int security_xfrm_state_alloc(struct xfrm_state
*x
,
1589 struct xfrm_user_sec_ctx
*sec_ctx
)
1591 return call_int_hook(xfrm_state_alloc
, 0, x
, sec_ctx
);
1593 EXPORT_SYMBOL(security_xfrm_state_alloc
);
1595 int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
1596 struct xfrm_sec_ctx
*polsec
, u32 secid
)
1598 return call_int_hook(xfrm_state_alloc_acquire
, 0, x
, polsec
, secid
);
1601 int security_xfrm_state_delete(struct xfrm_state
*x
)
1603 return call_int_hook(xfrm_state_delete_security
, 0, x
);
1605 EXPORT_SYMBOL(security_xfrm_state_delete
);
1607 void security_xfrm_state_free(struct xfrm_state
*x
)
1609 call_void_hook(xfrm_state_free_security
, x
);
1612 int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
)
1614 return call_int_hook(xfrm_policy_lookup
, 0, ctx
, fl_secid
, dir
);
1617 int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
1618 struct xfrm_policy
*xp
,
1619 const struct flowi
*fl
)
1621 struct security_hook_list
*hp
;
1625 * Since this function is expected to return 0 or 1, the judgment
1626 * becomes difficult if multiple LSMs supply this call. Fortunately,
1627 * we can use the first LSM's judgment because currently only SELinux
1628 * supplies this call.
1630 * For speed optimization, we explicitly break the loop rather than
1633 list_for_each_entry(hp
, &security_hook_heads
.xfrm_state_pol_flow_match
,
1635 rc
= hp
->hook
.xfrm_state_pol_flow_match(x
, xp
, fl
);
1641 int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
)
1643 return call_int_hook(xfrm_decode_session
, 0, skb
, secid
, 1);
1646 void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi
*fl
)
1648 int rc
= call_int_hook(xfrm_decode_session
, 0, skb
, &fl
->flowi_secid
,
1653 EXPORT_SYMBOL(security_skb_classify_flow
);
1655 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1659 int security_key_alloc(struct key
*key
, const struct cred
*cred
,
1660 unsigned long flags
)
1662 return call_int_hook(key_alloc
, 0, key
, cred
, flags
);
1665 void security_key_free(struct key
*key
)
1667 call_void_hook(key_free
, key
);
1670 int security_key_permission(key_ref_t key_ref
,
1671 const struct cred
*cred
, unsigned perm
)
1673 return call_int_hook(key_permission
, 0, key_ref
, cred
, perm
);
1676 int security_key_getsecurity(struct key
*key
, char **_buffer
)
1679 return call_int_hook(key_getsecurity
, 0, key
, _buffer
);
1682 #endif /* CONFIG_KEYS */
1686 int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
, void **lsmrule
)
1688 return call_int_hook(audit_rule_init
, 0, field
, op
, rulestr
, lsmrule
);
1691 int security_audit_rule_known(struct audit_krule
*krule
)
1693 return call_int_hook(audit_rule_known
, 0, krule
);
1696 void security_audit_rule_free(void *lsmrule
)
1698 call_void_hook(audit_rule_free
, lsmrule
);
1701 int security_audit_rule_match(u32 secid
, u32 field
, u32 op
, void *lsmrule
,
1702 struct audit_context
*actx
)
1704 return call_int_hook(audit_rule_match
, 0, secid
, field
, op
, lsmrule
,
1707 #endif /* CONFIG_AUDIT */
1709 #ifdef CONFIG_BPF_SYSCALL
1710 int security_bpf(int cmd
, union bpf_attr
*attr
, unsigned int size
)
1712 return call_int_hook(bpf
, 0, cmd
, attr
, size
);
1714 int security_bpf_map(struct bpf_map
*map
, fmode_t fmode
)
1716 return call_int_hook(bpf_map
, 0, map
, fmode
);
1718 int security_bpf_prog(struct bpf_prog
*prog
)
1720 return call_int_hook(bpf_prog
, 0, prog
);
1722 int security_bpf_map_alloc(struct bpf_map
*map
)
1724 return call_int_hook(bpf_map_alloc_security
, 0, map
);
1726 int security_bpf_prog_alloc(struct bpf_prog_aux
*aux
)
1728 return call_int_hook(bpf_prog_alloc_security
, 0, aux
);
1730 void security_bpf_map_free(struct bpf_map
*map
)
1732 call_void_hook(bpf_map_free_security
, map
);
1734 void security_bpf_prog_free(struct bpf_prog_aux
*aux
)
1736 call_void_hook(bpf_prog_free_security
, aux
);
1738 #endif /* CONFIG_BPF_SYSCALL */