1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Security plug functions
5 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
7 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
8 * Copyright (C) 2016 Mellanox Technologies
11 #define pr_fmt(fmt) "LSM: " fmt
13 #include <linux/bpf.h>
14 #include <linux/capability.h>
15 #include <linux/dcache.h>
16 #include <linux/export.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/kernel_read_file.h>
20 #include <linux/lsm_hooks.h>
21 #include <linux/integrity.h>
22 #include <linux/ima.h>
23 #include <linux/evm.h>
24 #include <linux/fsnotify.h>
25 #include <linux/mman.h>
26 #include <linux/mount.h>
27 #include <linux/personality.h>
28 #include <linux/backing-dev.h>
29 #include <linux/string.h>
30 #include <linux/msg.h>
33 #define MAX_LSM_EVM_XATTR 2
35 /* How many LSMs were built into the kernel? */
36 #define LSM_COUNT (__end_lsm_info - __start_lsm_info)
39 * These are descriptions of the reasons that can be passed to the
40 * security_locked_down() LSM hook. Placing this array here allows
41 * all security modules to use the same descriptions for auditing
44 const char *const lockdown_reasons
[LOCKDOWN_CONFIDENTIALITY_MAX
+1] = {
45 [LOCKDOWN_NONE
] = "none",
46 [LOCKDOWN_MODULE_SIGNATURE
] = "unsigned module loading",
47 [LOCKDOWN_DEV_MEM
] = "/dev/mem,kmem,port",
48 [LOCKDOWN_EFI_TEST
] = "/dev/efi_test access",
49 [LOCKDOWN_KEXEC
] = "kexec of unsigned images",
50 [LOCKDOWN_HIBERNATION
] = "hibernation",
51 [LOCKDOWN_PCI_ACCESS
] = "direct PCI access",
52 [LOCKDOWN_IOPORT
] = "raw io port access",
53 [LOCKDOWN_MSR
] = "raw MSR access",
54 [LOCKDOWN_ACPI_TABLES
] = "modifying ACPI tables",
55 [LOCKDOWN_PCMCIA_CIS
] = "direct PCMCIA CIS storage",
56 [LOCKDOWN_TIOCSSERIAL
] = "reconfiguration of serial port IO",
57 [LOCKDOWN_MODULE_PARAMETERS
] = "unsafe module parameters",
58 [LOCKDOWN_MMIOTRACE
] = "unsafe mmio",
59 [LOCKDOWN_DEBUGFS
] = "debugfs access",
60 [LOCKDOWN_XMON_WR
] = "xmon write access",
61 [LOCKDOWN_INTEGRITY_MAX
] = "integrity",
62 [LOCKDOWN_KCORE
] = "/proc/kcore access",
63 [LOCKDOWN_KPROBES
] = "use of kprobes",
64 [LOCKDOWN_BPF_READ
] = "use of bpf to read kernel RAM",
65 [LOCKDOWN_PERF
] = "unsafe use of perf",
66 [LOCKDOWN_TRACEFS
] = "use of tracefs",
67 [LOCKDOWN_XMON_RW
] = "xmon read and write access",
68 [LOCKDOWN_CONFIDENTIALITY_MAX
] = "confidentiality",
71 struct security_hook_heads security_hook_heads __lsm_ro_after_init
;
72 static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain
);
74 static struct kmem_cache
*lsm_file_cache
;
75 static struct kmem_cache
*lsm_inode_cache
;
78 static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init
;
80 /* Boot-time LSM user choice */
81 static __initdata
const char *chosen_lsm_order
;
82 static __initdata
const char *chosen_major_lsm
;
84 static __initconst
const char * const builtin_lsm_order
= CONFIG_LSM
;
86 /* Ordered list of LSMs to initialize. */
87 static __initdata
struct lsm_info
**ordered_lsms
;
88 static __initdata
struct lsm_info
*exclusive
;
90 static __initdata
bool debug
;
91 #define init_debug(...) \
94 pr_info(__VA_ARGS__); \
97 static bool __init
is_enabled(struct lsm_info
*lsm
)
102 return *lsm
->enabled
;
105 /* Mark an LSM's enabled flag. */
106 static int lsm_enabled_true __initdata
= 1;
107 static int lsm_enabled_false __initdata
= 0;
108 static void __init
set_enabled(struct lsm_info
*lsm
, bool enabled
)
111 * When an LSM hasn't configured an enable variable, we can use
112 * a hard-coded location for storing the default enabled state.
116 lsm
->enabled
= &lsm_enabled_true
;
118 lsm
->enabled
= &lsm_enabled_false
;
119 } else if (lsm
->enabled
== &lsm_enabled_true
) {
121 lsm
->enabled
= &lsm_enabled_false
;
122 } else if (lsm
->enabled
== &lsm_enabled_false
) {
124 lsm
->enabled
= &lsm_enabled_true
;
126 *lsm
->enabled
= enabled
;
130 /* Is an LSM already listed in the ordered LSMs list? */
131 static bool __init
exists_ordered_lsm(struct lsm_info
*lsm
)
133 struct lsm_info
**check
;
135 for (check
= ordered_lsms
; *check
; check
++)
142 /* Append an LSM to the list of ordered LSMs to initialize. */
143 static int last_lsm __initdata
;
144 static void __init
append_ordered_lsm(struct lsm_info
*lsm
, const char *from
)
146 /* Ignore duplicate selections. */
147 if (exists_ordered_lsm(lsm
))
150 if (WARN(last_lsm
== LSM_COUNT
, "%s: out of LSM slots!?\n", from
))
153 /* Enable this LSM, if it is not already set. */
155 lsm
->enabled
= &lsm_enabled_true
;
156 ordered_lsms
[last_lsm
++] = lsm
;
158 init_debug("%s ordering: %s (%sabled)\n", from
, lsm
->name
,
159 is_enabled(lsm
) ? "en" : "dis");
162 /* Is an LSM allowed to be initialized? */
163 static bool __init
lsm_allowed(struct lsm_info
*lsm
)
165 /* Skip if the LSM is disabled. */
166 if (!is_enabled(lsm
))
169 /* Not allowed if another exclusive LSM already initialized. */
170 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && exclusive
) {
171 init_debug("exclusive disabled: %s\n", lsm
->name
);
178 static void __init
lsm_set_blob_size(int *need
, int *lbs
)
189 static void __init
lsm_set_blob_sizes(struct lsm_blob_sizes
*needed
)
194 lsm_set_blob_size(&needed
->lbs_cred
, &blob_sizes
.lbs_cred
);
195 lsm_set_blob_size(&needed
->lbs_file
, &blob_sizes
.lbs_file
);
197 * The inode blob gets an rcu_head in addition to
198 * what the modules might need.
200 if (needed
->lbs_inode
&& blob_sizes
.lbs_inode
== 0)
201 blob_sizes
.lbs_inode
= sizeof(struct rcu_head
);
202 lsm_set_blob_size(&needed
->lbs_inode
, &blob_sizes
.lbs_inode
);
203 lsm_set_blob_size(&needed
->lbs_ipc
, &blob_sizes
.lbs_ipc
);
204 lsm_set_blob_size(&needed
->lbs_msg_msg
, &blob_sizes
.lbs_msg_msg
);
205 lsm_set_blob_size(&needed
->lbs_task
, &blob_sizes
.lbs_task
);
208 /* Prepare LSM for initialization. */
209 static void __init
prepare_lsm(struct lsm_info
*lsm
)
211 int enabled
= lsm_allowed(lsm
);
213 /* Record enablement (to handle any following exclusive LSMs). */
214 set_enabled(lsm
, enabled
);
216 /* If enabled, do pre-initialization work. */
218 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && !exclusive
) {
220 init_debug("exclusive chosen: %s\n", lsm
->name
);
223 lsm_set_blob_sizes(lsm
->blobs
);
227 /* Initialize a given LSM, if it is enabled. */
228 static void __init
initialize_lsm(struct lsm_info
*lsm
)
230 if (is_enabled(lsm
)) {
233 init_debug("initializing %s\n", lsm
->name
);
235 WARN(ret
, "%s failed to initialize: %d\n", lsm
->name
, ret
);
239 /* Populate ordered LSMs list from comma-separated LSM name list. */
240 static void __init
ordered_lsm_parse(const char *order
, const char *origin
)
242 struct lsm_info
*lsm
;
243 char *sep
, *name
, *next
;
245 /* LSM_ORDER_FIRST is always first. */
246 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
247 if (lsm
->order
== LSM_ORDER_FIRST
)
248 append_ordered_lsm(lsm
, "first");
251 /* Process "security=", if given. */
252 if (chosen_major_lsm
) {
253 struct lsm_info
*major
;
256 * To match the original "security=" behavior, this
257 * explicitly does NOT fallback to another Legacy Major
258 * if the selected one was separately disabled: disable
259 * all non-matching Legacy Major LSMs.
261 for (major
= __start_lsm_info
; major
< __end_lsm_info
;
263 if ((major
->flags
& LSM_FLAG_LEGACY_MAJOR
) &&
264 strcmp(major
->name
, chosen_major_lsm
) != 0) {
265 set_enabled(major
, false);
266 init_debug("security=%s disabled: %s\n",
267 chosen_major_lsm
, major
->name
);
272 sep
= kstrdup(order
, GFP_KERNEL
);
274 /* Walk the list, looking for matching LSMs. */
275 while ((name
= strsep(&next
, ",")) != NULL
) {
278 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
279 if (lsm
->order
== LSM_ORDER_MUTABLE
&&
280 strcmp(lsm
->name
, name
) == 0) {
281 append_ordered_lsm(lsm
, origin
);
287 init_debug("%s ignored: %s\n", origin
, name
);
290 /* Process "security=", if given. */
291 if (chosen_major_lsm
) {
292 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
293 if (exists_ordered_lsm(lsm
))
295 if (strcmp(lsm
->name
, chosen_major_lsm
) == 0)
296 append_ordered_lsm(lsm
, "security=");
300 /* Disable all LSMs not in the ordered list. */
301 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
302 if (exists_ordered_lsm(lsm
))
304 set_enabled(lsm
, false);
305 init_debug("%s disabled: %s\n", origin
, lsm
->name
);
311 static void __init
lsm_early_cred(struct cred
*cred
);
312 static void __init
lsm_early_task(struct task_struct
*task
);
314 static int lsm_append(const char *new, char **result
);
316 static void __init
ordered_lsm_init(void)
318 struct lsm_info
**lsm
;
320 ordered_lsms
= kcalloc(LSM_COUNT
+ 1, sizeof(*ordered_lsms
),
323 if (chosen_lsm_order
) {
324 if (chosen_major_lsm
) {
325 pr_info("security= is ignored because it is superseded by lsm=\n");
326 chosen_major_lsm
= NULL
;
328 ordered_lsm_parse(chosen_lsm_order
, "cmdline");
330 ordered_lsm_parse(builtin_lsm_order
, "builtin");
332 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
335 init_debug("cred blob size = %d\n", blob_sizes
.lbs_cred
);
336 init_debug("file blob size = %d\n", blob_sizes
.lbs_file
);
337 init_debug("inode blob size = %d\n", blob_sizes
.lbs_inode
);
338 init_debug("ipc blob size = %d\n", blob_sizes
.lbs_ipc
);
339 init_debug("msg_msg blob size = %d\n", blob_sizes
.lbs_msg_msg
);
340 init_debug("task blob size = %d\n", blob_sizes
.lbs_task
);
343 * Create any kmem_caches needed for blobs
345 if (blob_sizes
.lbs_file
)
346 lsm_file_cache
= kmem_cache_create("lsm_file_cache",
347 blob_sizes
.lbs_file
, 0,
349 if (blob_sizes
.lbs_inode
)
350 lsm_inode_cache
= kmem_cache_create("lsm_inode_cache",
351 blob_sizes
.lbs_inode
, 0,
354 lsm_early_cred((struct cred
*) current
->cred
);
355 lsm_early_task(current
);
356 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
357 initialize_lsm(*lsm
);
362 int __init
early_security_init(void)
365 struct hlist_head
*list
= (struct hlist_head
*) &security_hook_heads
;
366 struct lsm_info
*lsm
;
368 for (i
= 0; i
< sizeof(security_hook_heads
) / sizeof(struct hlist_head
);
370 INIT_HLIST_HEAD(&list
[i
]);
372 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
374 lsm
->enabled
= &lsm_enabled_true
;
383 * security_init - initializes the security framework
385 * This should be called early in the kernel initialization sequence.
387 int __init
security_init(void)
389 struct lsm_info
*lsm
;
391 pr_info("Security Framework initializing\n");
394 * Append the names of the early LSM modules now that kmalloc() is
397 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
399 lsm_append(lsm
->name
, &lsm_names
);
402 /* Load LSMs in specified order. */
408 /* Save user chosen LSM */
409 static int __init
choose_major_lsm(char *str
)
411 chosen_major_lsm
= str
;
414 __setup("security=", choose_major_lsm
);
416 /* Explicitly choose LSM initialization order. */
417 static int __init
choose_lsm_order(char *str
)
419 chosen_lsm_order
= str
;
422 __setup("lsm=", choose_lsm_order
);
424 /* Enable LSM order debugging. */
425 static int __init
enable_debug(char *str
)
430 __setup("lsm.debug", enable_debug
);
432 static bool match_last_lsm(const char *list
, const char *lsm
)
436 if (WARN_ON(!list
|| !lsm
))
438 last
= strrchr(list
, ',');
440 /* Pass the comma, strcmp() will check for '\0' */
444 return !strcmp(last
, lsm
);
447 static int lsm_append(const char *new, char **result
)
451 if (*result
== NULL
) {
452 *result
= kstrdup(new, GFP_KERNEL
);
456 /* Check if it is the last registered name */
457 if (match_last_lsm(*result
, new))
459 cp
= kasprintf(GFP_KERNEL
, "%s,%s", *result
, new);
469 * security_add_hooks - Add a modules hooks to the hook lists.
470 * @hooks: the hooks to add
471 * @count: the number of hooks to add
472 * @lsm: the name of the security module
474 * Each LSM has to register its hooks with the infrastructure.
476 void __init
security_add_hooks(struct security_hook_list
*hooks
, int count
,
481 for (i
= 0; i
< count
; i
++) {
483 hlist_add_tail_rcu(&hooks
[i
].list
, hooks
[i
].head
);
487 * Don't try to append during early_security_init(), we'll come back
488 * and fix this up afterwards.
490 if (slab_is_available()) {
491 if (lsm_append(lsm
, &lsm_names
) < 0)
492 panic("%s - Cannot get early memory.\n", __func__
);
496 int call_blocking_lsm_notifier(enum lsm_event event
, void *data
)
498 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain
,
501 EXPORT_SYMBOL(call_blocking_lsm_notifier
);
503 int register_blocking_lsm_notifier(struct notifier_block
*nb
)
505 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain
,
508 EXPORT_SYMBOL(register_blocking_lsm_notifier
);
510 int unregister_blocking_lsm_notifier(struct notifier_block
*nb
)
512 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain
,
515 EXPORT_SYMBOL(unregister_blocking_lsm_notifier
);
518 * lsm_cred_alloc - allocate a composite cred blob
519 * @cred: the cred that needs a blob
520 * @gfp: allocation type
522 * Allocate the cred blob for all the modules
524 * Returns 0, or -ENOMEM if memory can't be allocated.
526 static int lsm_cred_alloc(struct cred
*cred
, gfp_t gfp
)
528 if (blob_sizes
.lbs_cred
== 0) {
529 cred
->security
= NULL
;
533 cred
->security
= kzalloc(blob_sizes
.lbs_cred
, gfp
);
534 if (cred
->security
== NULL
)
540 * lsm_early_cred - during initialization allocate a composite cred blob
541 * @cred: the cred that needs a blob
543 * Allocate the cred blob for all the modules
545 static void __init
lsm_early_cred(struct cred
*cred
)
547 int rc
= lsm_cred_alloc(cred
, GFP_KERNEL
);
550 panic("%s: Early cred alloc failed.\n", __func__
);
554 * lsm_file_alloc - allocate a composite file blob
555 * @file: the file that needs a blob
557 * Allocate the file blob for all the modules
559 * Returns 0, or -ENOMEM if memory can't be allocated.
561 static int lsm_file_alloc(struct file
*file
)
563 if (!lsm_file_cache
) {
564 file
->f_security
= NULL
;
568 file
->f_security
= kmem_cache_zalloc(lsm_file_cache
, GFP_KERNEL
);
569 if (file
->f_security
== NULL
)
575 * lsm_inode_alloc - allocate a composite inode blob
576 * @inode: the inode that needs a blob
578 * Allocate the inode blob for all the modules
580 * Returns 0, or -ENOMEM if memory can't be allocated.
582 int lsm_inode_alloc(struct inode
*inode
)
584 if (!lsm_inode_cache
) {
585 inode
->i_security
= NULL
;
589 inode
->i_security
= kmem_cache_zalloc(lsm_inode_cache
, GFP_NOFS
);
590 if (inode
->i_security
== NULL
)
596 * lsm_task_alloc - allocate a composite task blob
597 * @task: the task that needs a blob
599 * Allocate the task blob for all the modules
601 * Returns 0, or -ENOMEM if memory can't be allocated.
603 static int lsm_task_alloc(struct task_struct
*task
)
605 if (blob_sizes
.lbs_task
== 0) {
606 task
->security
= NULL
;
610 task
->security
= kzalloc(blob_sizes
.lbs_task
, GFP_KERNEL
);
611 if (task
->security
== NULL
)
617 * lsm_ipc_alloc - allocate a composite ipc blob
618 * @kip: the ipc that needs a blob
620 * Allocate the ipc blob for all the modules
622 * Returns 0, or -ENOMEM if memory can't be allocated.
624 static int lsm_ipc_alloc(struct kern_ipc_perm
*kip
)
626 if (blob_sizes
.lbs_ipc
== 0) {
627 kip
->security
= NULL
;
631 kip
->security
= kzalloc(blob_sizes
.lbs_ipc
, GFP_KERNEL
);
632 if (kip
->security
== NULL
)
638 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
639 * @mp: the msg_msg that needs a blob
641 * Allocate the ipc blob for all the modules
643 * Returns 0, or -ENOMEM if memory can't be allocated.
645 static int lsm_msg_msg_alloc(struct msg_msg
*mp
)
647 if (blob_sizes
.lbs_msg_msg
== 0) {
652 mp
->security
= kzalloc(blob_sizes
.lbs_msg_msg
, GFP_KERNEL
);
653 if (mp
->security
== NULL
)
659 * lsm_early_task - during initialization allocate a composite task blob
660 * @task: the task that needs a blob
662 * Allocate the task blob for all the modules
664 static void __init
lsm_early_task(struct task_struct
*task
)
666 int rc
= lsm_task_alloc(task
);
669 panic("%s: Early task alloc failed.\n", __func__
);
673 * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
674 * can be accessed with:
676 * LSM_RET_DEFAULT(<hook_name>)
678 * The macros below define static constants for the default value of each
681 #define LSM_RET_DEFAULT(NAME) (NAME##_default)
682 #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
683 #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
684 static const int LSM_RET_DEFAULT(NAME) = (DEFAULT);
685 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
686 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
688 #include <linux/lsm_hook_defs.h>
692 * Hook list operation macros.
695 * This is a hook that does not return a value.
698 * This is a hook that returns a value.
701 #define call_void_hook(FUNC, ...) \
703 struct security_hook_list *P; \
705 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
706 P->hook.FUNC(__VA_ARGS__); \
709 #define call_int_hook(FUNC, IRC, ...) ({ \
712 struct security_hook_list *P; \
714 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
715 RC = P->hook.FUNC(__VA_ARGS__); \
723 /* Security operations */
725 int security_binder_set_context_mgr(struct task_struct
*mgr
)
727 return call_int_hook(binder_set_context_mgr
, 0, mgr
);
730 int security_binder_transaction(struct task_struct
*from
,
731 struct task_struct
*to
)
733 return call_int_hook(binder_transaction
, 0, from
, to
);
736 int security_binder_transfer_binder(struct task_struct
*from
,
737 struct task_struct
*to
)
739 return call_int_hook(binder_transfer_binder
, 0, from
, to
);
742 int security_binder_transfer_file(struct task_struct
*from
,
743 struct task_struct
*to
, struct file
*file
)
745 return call_int_hook(binder_transfer_file
, 0, from
, to
, file
);
748 int security_ptrace_access_check(struct task_struct
*child
, unsigned int mode
)
750 return call_int_hook(ptrace_access_check
, 0, child
, mode
);
753 int security_ptrace_traceme(struct task_struct
*parent
)
755 return call_int_hook(ptrace_traceme
, 0, parent
);
758 int security_capget(struct task_struct
*target
,
759 kernel_cap_t
*effective
,
760 kernel_cap_t
*inheritable
,
761 kernel_cap_t
*permitted
)
763 return call_int_hook(capget
, 0, target
,
764 effective
, inheritable
, permitted
);
767 int security_capset(struct cred
*new, const struct cred
*old
,
768 const kernel_cap_t
*effective
,
769 const kernel_cap_t
*inheritable
,
770 const kernel_cap_t
*permitted
)
772 return call_int_hook(capset
, 0, new, old
,
773 effective
, inheritable
, permitted
);
776 int security_capable(const struct cred
*cred
,
777 struct user_namespace
*ns
,
781 return call_int_hook(capable
, 0, cred
, ns
, cap
, opts
);
784 int security_quotactl(int cmds
, int type
, int id
, struct super_block
*sb
)
786 return call_int_hook(quotactl
, 0, cmds
, type
, id
, sb
);
789 int security_quota_on(struct dentry
*dentry
)
791 return call_int_hook(quota_on
, 0, dentry
);
794 int security_syslog(int type
)
796 return call_int_hook(syslog
, 0, type
);
799 int security_settime64(const struct timespec64
*ts
, const struct timezone
*tz
)
801 return call_int_hook(settime
, 0, ts
, tz
);
804 int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
)
806 struct security_hook_list
*hp
;
807 int cap_sys_admin
= 1;
811 * The module will respond with a positive value if
812 * it thinks the __vm_enough_memory() call should be
813 * made with the cap_sys_admin set. If all of the modules
814 * agree that it should be set it will. If any module
815 * thinks it should not be set it won't.
817 hlist_for_each_entry(hp
, &security_hook_heads
.vm_enough_memory
, list
) {
818 rc
= hp
->hook
.vm_enough_memory(mm
, pages
);
824 return __vm_enough_memory(mm
, pages
, cap_sys_admin
);
827 int security_bprm_creds_for_exec(struct linux_binprm
*bprm
)
829 return call_int_hook(bprm_creds_for_exec
, 0, bprm
);
832 int security_bprm_creds_from_file(struct linux_binprm
*bprm
, struct file
*file
)
834 return call_int_hook(bprm_creds_from_file
, 0, bprm
, file
);
837 int security_bprm_check(struct linux_binprm
*bprm
)
841 ret
= call_int_hook(bprm_check_security
, 0, bprm
);
844 return ima_bprm_check(bprm
);
847 void security_bprm_committing_creds(struct linux_binprm
*bprm
)
849 call_void_hook(bprm_committing_creds
, bprm
);
852 void security_bprm_committed_creds(struct linux_binprm
*bprm
)
854 call_void_hook(bprm_committed_creds
, bprm
);
857 int security_fs_context_dup(struct fs_context
*fc
, struct fs_context
*src_fc
)
859 return call_int_hook(fs_context_dup
, 0, fc
, src_fc
);
862 int security_fs_context_parse_param(struct fs_context
*fc
, struct fs_parameter
*param
)
864 return call_int_hook(fs_context_parse_param
, -ENOPARAM
, fc
, param
);
867 int security_sb_alloc(struct super_block
*sb
)
869 return call_int_hook(sb_alloc_security
, 0, sb
);
872 void security_sb_free(struct super_block
*sb
)
874 call_void_hook(sb_free_security
, sb
);
877 void security_free_mnt_opts(void **mnt_opts
)
881 call_void_hook(sb_free_mnt_opts
, *mnt_opts
);
884 EXPORT_SYMBOL(security_free_mnt_opts
);
886 int security_sb_eat_lsm_opts(char *options
, void **mnt_opts
)
888 return call_int_hook(sb_eat_lsm_opts
, 0, options
, mnt_opts
);
890 EXPORT_SYMBOL(security_sb_eat_lsm_opts
);
892 int security_sb_remount(struct super_block
*sb
,
895 return call_int_hook(sb_remount
, 0, sb
, mnt_opts
);
897 EXPORT_SYMBOL(security_sb_remount
);
899 int security_sb_kern_mount(struct super_block
*sb
)
901 return call_int_hook(sb_kern_mount
, 0, sb
);
904 int security_sb_show_options(struct seq_file
*m
, struct super_block
*sb
)
906 return call_int_hook(sb_show_options
, 0, m
, sb
);
909 int security_sb_statfs(struct dentry
*dentry
)
911 return call_int_hook(sb_statfs
, 0, dentry
);
914 int security_sb_mount(const char *dev_name
, const struct path
*path
,
915 const char *type
, unsigned long flags
, void *data
)
917 return call_int_hook(sb_mount
, 0, dev_name
, path
, type
, flags
, data
);
920 int security_sb_umount(struct vfsmount
*mnt
, int flags
)
922 return call_int_hook(sb_umount
, 0, mnt
, flags
);
925 int security_sb_pivotroot(const struct path
*old_path
, const struct path
*new_path
)
927 return call_int_hook(sb_pivotroot
, 0, old_path
, new_path
);
930 int security_sb_set_mnt_opts(struct super_block
*sb
,
932 unsigned long kern_flags
,
933 unsigned long *set_kern_flags
)
935 return call_int_hook(sb_set_mnt_opts
,
936 mnt_opts
? -EOPNOTSUPP
: 0, sb
,
937 mnt_opts
, kern_flags
, set_kern_flags
);
939 EXPORT_SYMBOL(security_sb_set_mnt_opts
);
941 int security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
942 struct super_block
*newsb
,
943 unsigned long kern_flags
,
944 unsigned long *set_kern_flags
)
946 return call_int_hook(sb_clone_mnt_opts
, 0, oldsb
, newsb
,
947 kern_flags
, set_kern_flags
);
949 EXPORT_SYMBOL(security_sb_clone_mnt_opts
);
951 int security_add_mnt_opt(const char *option
, const char *val
, int len
,
954 return call_int_hook(sb_add_mnt_opt
, -EINVAL
,
955 option
, val
, len
, mnt_opts
);
957 EXPORT_SYMBOL(security_add_mnt_opt
);
959 int security_move_mount(const struct path
*from_path
, const struct path
*to_path
)
961 return call_int_hook(move_mount
, 0, from_path
, to_path
);
964 int security_path_notify(const struct path
*path
, u64 mask
,
965 unsigned int obj_type
)
967 return call_int_hook(path_notify
, 0, path
, mask
, obj_type
);
970 int security_inode_alloc(struct inode
*inode
)
972 int rc
= lsm_inode_alloc(inode
);
976 rc
= call_int_hook(inode_alloc_security
, 0, inode
);
978 security_inode_free(inode
);
982 static void inode_free_by_rcu(struct rcu_head
*head
)
985 * The rcu head is at the start of the inode blob
987 kmem_cache_free(lsm_inode_cache
, head
);
990 void security_inode_free(struct inode
*inode
)
992 integrity_inode_free(inode
);
993 call_void_hook(inode_free_security
, inode
);
995 * The inode may still be referenced in a path walk and
996 * a call to security_inode_permission() can be made
997 * after inode_free_security() is called. Ideally, the VFS
998 * wouldn't do this, but fixing that is a much harder
999 * job. For now, simply free the i_security via RCU, and
1000 * leave the current inode->i_security pointer intact.
1001 * The inode will be freed after the RCU grace period too.
1003 if (inode
->i_security
)
1004 call_rcu((struct rcu_head
*)inode
->i_security
,
1008 int security_dentry_init_security(struct dentry
*dentry
, int mode
,
1009 const struct qstr
*name
, void **ctx
,
1012 return call_int_hook(dentry_init_security
, -EOPNOTSUPP
, dentry
, mode
,
1015 EXPORT_SYMBOL(security_dentry_init_security
);
1017 int security_dentry_create_files_as(struct dentry
*dentry
, int mode
,
1019 const struct cred
*old
, struct cred
*new)
1021 return call_int_hook(dentry_create_files_as
, 0, dentry
, mode
,
1024 EXPORT_SYMBOL(security_dentry_create_files_as
);
1026 int security_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1027 const struct qstr
*qstr
,
1028 const initxattrs initxattrs
, void *fs_data
)
1030 struct xattr new_xattrs
[MAX_LSM_EVM_XATTR
+ 1];
1031 struct xattr
*lsm_xattr
, *evm_xattr
, *xattr
;
1034 if (unlikely(IS_PRIVATE(inode
)))
1038 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
,
1039 dir
, qstr
, NULL
, NULL
, NULL
);
1040 memset(new_xattrs
, 0, sizeof(new_xattrs
));
1041 lsm_xattr
= new_xattrs
;
1042 ret
= call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
, qstr
,
1045 &lsm_xattr
->value_len
);
1049 evm_xattr
= lsm_xattr
+ 1;
1050 ret
= evm_inode_init_security(inode
, lsm_xattr
, evm_xattr
);
1053 ret
= initxattrs(inode
, new_xattrs
, fs_data
);
1055 for (xattr
= new_xattrs
; xattr
->value
!= NULL
; xattr
++)
1056 kfree(xattr
->value
);
1057 return (ret
== -EOPNOTSUPP
) ? 0 : ret
;
1059 EXPORT_SYMBOL(security_inode_init_security
);
1061 int security_old_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1062 const struct qstr
*qstr
, const char **name
,
1063 void **value
, size_t *len
)
1065 if (unlikely(IS_PRIVATE(inode
)))
1067 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
,
1068 qstr
, name
, value
, len
);
1070 EXPORT_SYMBOL(security_old_inode_init_security
);
1072 #ifdef CONFIG_SECURITY_PATH
1073 int security_path_mknod(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
,
1076 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1078 return call_int_hook(path_mknod
, 0, dir
, dentry
, mode
, dev
);
1080 EXPORT_SYMBOL(security_path_mknod
);
1082 int security_path_mkdir(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
)
1084 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1086 return call_int_hook(path_mkdir
, 0, dir
, dentry
, mode
);
1088 EXPORT_SYMBOL(security_path_mkdir
);
1090 int security_path_rmdir(const struct path
*dir
, struct dentry
*dentry
)
1092 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1094 return call_int_hook(path_rmdir
, 0, dir
, dentry
);
1097 int security_path_unlink(const struct path
*dir
, struct dentry
*dentry
)
1099 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1101 return call_int_hook(path_unlink
, 0, dir
, dentry
);
1103 EXPORT_SYMBOL(security_path_unlink
);
1105 int security_path_symlink(const struct path
*dir
, struct dentry
*dentry
,
1106 const char *old_name
)
1108 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1110 return call_int_hook(path_symlink
, 0, dir
, dentry
, old_name
);
1113 int security_path_link(struct dentry
*old_dentry
, const struct path
*new_dir
,
1114 struct dentry
*new_dentry
)
1116 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1118 return call_int_hook(path_link
, 0, old_dentry
, new_dir
, new_dentry
);
1121 int security_path_rename(const struct path
*old_dir
, struct dentry
*old_dentry
,
1122 const struct path
*new_dir
, struct dentry
*new_dentry
,
1125 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1126 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1129 if (flags
& RENAME_EXCHANGE
) {
1130 int err
= call_int_hook(path_rename
, 0, new_dir
, new_dentry
,
1131 old_dir
, old_dentry
);
1136 return call_int_hook(path_rename
, 0, old_dir
, old_dentry
, new_dir
,
1139 EXPORT_SYMBOL(security_path_rename
);
1141 int security_path_truncate(const struct path
*path
)
1143 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1145 return call_int_hook(path_truncate
, 0, path
);
1148 int security_path_chmod(const struct path
*path
, umode_t mode
)
1150 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1152 return call_int_hook(path_chmod
, 0, path
, mode
);
1155 int security_path_chown(const struct path
*path
, kuid_t uid
, kgid_t gid
)
1157 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1159 return call_int_hook(path_chown
, 0, path
, uid
, gid
);
1162 int security_path_chroot(const struct path
*path
)
1164 return call_int_hook(path_chroot
, 0, path
);
1168 int security_inode_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1170 if (unlikely(IS_PRIVATE(dir
)))
1172 return call_int_hook(inode_create
, 0, dir
, dentry
, mode
);
1174 EXPORT_SYMBOL_GPL(security_inode_create
);
1176 int security_inode_link(struct dentry
*old_dentry
, struct inode
*dir
,
1177 struct dentry
*new_dentry
)
1179 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1181 return call_int_hook(inode_link
, 0, old_dentry
, dir
, new_dentry
);
1184 int security_inode_unlink(struct inode
*dir
, struct dentry
*dentry
)
1186 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1188 return call_int_hook(inode_unlink
, 0, dir
, dentry
);
1191 int security_inode_symlink(struct inode
*dir
, struct dentry
*dentry
,
1192 const char *old_name
)
1194 if (unlikely(IS_PRIVATE(dir
)))
1196 return call_int_hook(inode_symlink
, 0, dir
, dentry
, old_name
);
1199 int security_inode_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1201 if (unlikely(IS_PRIVATE(dir
)))
1203 return call_int_hook(inode_mkdir
, 0, dir
, dentry
, mode
);
1205 EXPORT_SYMBOL_GPL(security_inode_mkdir
);
1207 int security_inode_rmdir(struct inode
*dir
, struct dentry
*dentry
)
1209 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1211 return call_int_hook(inode_rmdir
, 0, dir
, dentry
);
1214 int security_inode_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
, dev_t dev
)
1216 if (unlikely(IS_PRIVATE(dir
)))
1218 return call_int_hook(inode_mknod
, 0, dir
, dentry
, mode
, dev
);
1221 int security_inode_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1222 struct inode
*new_dir
, struct dentry
*new_dentry
,
1225 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1226 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1229 if (flags
& RENAME_EXCHANGE
) {
1230 int err
= call_int_hook(inode_rename
, 0, new_dir
, new_dentry
,
1231 old_dir
, old_dentry
);
1236 return call_int_hook(inode_rename
, 0, old_dir
, old_dentry
,
1237 new_dir
, new_dentry
);
1240 int security_inode_readlink(struct dentry
*dentry
)
1242 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1244 return call_int_hook(inode_readlink
, 0, dentry
);
1247 int security_inode_follow_link(struct dentry
*dentry
, struct inode
*inode
,
1250 if (unlikely(IS_PRIVATE(inode
)))
1252 return call_int_hook(inode_follow_link
, 0, dentry
, inode
, rcu
);
1255 int security_inode_permission(struct inode
*inode
, int mask
)
1257 if (unlikely(IS_PRIVATE(inode
)))
1259 return call_int_hook(inode_permission
, 0, inode
, mask
);
1262 int security_inode_setattr(struct dentry
*dentry
, struct iattr
*attr
)
1266 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1268 ret
= call_int_hook(inode_setattr
, 0, dentry
, attr
);
1271 return evm_inode_setattr(dentry
, attr
);
1273 EXPORT_SYMBOL_GPL(security_inode_setattr
);
1275 int security_inode_getattr(const struct path
*path
)
1277 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1279 return call_int_hook(inode_getattr
, 0, path
);
1282 int security_inode_setxattr(struct dentry
*dentry
, const char *name
,
1283 const void *value
, size_t size
, int flags
)
1287 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1290 * SELinux and Smack integrate the cap call,
1291 * so assume that all LSMs supplying this call do so.
1293 ret
= call_int_hook(inode_setxattr
, 1, dentry
, name
, value
, size
,
1297 ret
= cap_inode_setxattr(dentry
, name
, value
, size
, flags
);
1300 ret
= ima_inode_setxattr(dentry
, name
, value
, size
);
1303 return evm_inode_setxattr(dentry
, name
, value
, size
);
1306 void security_inode_post_setxattr(struct dentry
*dentry
, const char *name
,
1307 const void *value
, size_t size
, int flags
)
1309 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1311 call_void_hook(inode_post_setxattr
, dentry
, name
, value
, size
, flags
);
1312 evm_inode_post_setxattr(dentry
, name
, value
, size
);
1315 int security_inode_getxattr(struct dentry
*dentry
, const char *name
)
1317 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1319 return call_int_hook(inode_getxattr
, 0, dentry
, name
);
1322 int security_inode_listxattr(struct dentry
*dentry
)
1324 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1326 return call_int_hook(inode_listxattr
, 0, dentry
);
1329 int security_inode_removexattr(struct dentry
*dentry
, const char *name
)
1333 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1336 * SELinux and Smack integrate the cap call,
1337 * so assume that all LSMs supplying this call do so.
1339 ret
= call_int_hook(inode_removexattr
, 1, dentry
, name
);
1341 ret
= cap_inode_removexattr(dentry
, name
);
1344 ret
= ima_inode_removexattr(dentry
, name
);
1347 return evm_inode_removexattr(dentry
, name
);
1350 int security_inode_need_killpriv(struct dentry
*dentry
)
1352 return call_int_hook(inode_need_killpriv
, 0, dentry
);
1355 int security_inode_killpriv(struct dentry
*dentry
)
1357 return call_int_hook(inode_killpriv
, 0, dentry
);
1360 int security_inode_getsecurity(struct inode
*inode
, const char *name
, void **buffer
, bool alloc
)
1362 struct security_hook_list
*hp
;
1365 if (unlikely(IS_PRIVATE(inode
)))
1366 return LSM_RET_DEFAULT(inode_getsecurity
);
1368 * Only one module will provide an attribute with a given name.
1370 hlist_for_each_entry(hp
, &security_hook_heads
.inode_getsecurity
, list
) {
1371 rc
= hp
->hook
.inode_getsecurity(inode
, name
, buffer
, alloc
);
1372 if (rc
!= LSM_RET_DEFAULT(inode_getsecurity
))
1375 return LSM_RET_DEFAULT(inode_getsecurity
);
1378 int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
)
1380 struct security_hook_list
*hp
;
1383 if (unlikely(IS_PRIVATE(inode
)))
1384 return LSM_RET_DEFAULT(inode_setsecurity
);
1386 * Only one module will provide an attribute with a given name.
1388 hlist_for_each_entry(hp
, &security_hook_heads
.inode_setsecurity
, list
) {
1389 rc
= hp
->hook
.inode_setsecurity(inode
, name
, value
, size
,
1391 if (rc
!= LSM_RET_DEFAULT(inode_setsecurity
))
1394 return LSM_RET_DEFAULT(inode_setsecurity
);
1397 int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
)
1399 if (unlikely(IS_PRIVATE(inode
)))
1401 return call_int_hook(inode_listsecurity
, 0, inode
, buffer
, buffer_size
);
1403 EXPORT_SYMBOL(security_inode_listsecurity
);
1405 void security_inode_getsecid(struct inode
*inode
, u32
*secid
)
1407 call_void_hook(inode_getsecid
, inode
, secid
);
1410 int security_inode_copy_up(struct dentry
*src
, struct cred
**new)
1412 return call_int_hook(inode_copy_up
, 0, src
, new);
1414 EXPORT_SYMBOL(security_inode_copy_up
);
1416 int security_inode_copy_up_xattr(const char *name
)
1418 struct security_hook_list
*hp
;
1422 * The implementation can return 0 (accept the xattr), 1 (discard the
1423 * xattr), -EOPNOTSUPP if it does not know anything about the xattr or
1424 * any other error code incase of an error.
1426 hlist_for_each_entry(hp
,
1427 &security_hook_heads
.inode_copy_up_xattr
, list
) {
1428 rc
= hp
->hook
.inode_copy_up_xattr(name
);
1429 if (rc
!= LSM_RET_DEFAULT(inode_copy_up_xattr
))
1433 return LSM_RET_DEFAULT(inode_copy_up_xattr
);
1435 EXPORT_SYMBOL(security_inode_copy_up_xattr
);
1437 int security_kernfs_init_security(struct kernfs_node
*kn_dir
,
1438 struct kernfs_node
*kn
)
1440 return call_int_hook(kernfs_init_security
, 0, kn_dir
, kn
);
1443 int security_file_permission(struct file
*file
, int mask
)
1447 ret
= call_int_hook(file_permission
, 0, file
, mask
);
1451 return fsnotify_perm(file
, mask
);
1454 int security_file_alloc(struct file
*file
)
1456 int rc
= lsm_file_alloc(file
);
1460 rc
= call_int_hook(file_alloc_security
, 0, file
);
1462 security_file_free(file
);
1466 void security_file_free(struct file
*file
)
1470 call_void_hook(file_free_security
, file
);
1472 blob
= file
->f_security
;
1474 file
->f_security
= NULL
;
1475 kmem_cache_free(lsm_file_cache
, blob
);
1479 int security_file_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1481 return call_int_hook(file_ioctl
, 0, file
, cmd
, arg
);
1483 EXPORT_SYMBOL_GPL(security_file_ioctl
);
1485 static inline unsigned long mmap_prot(struct file
*file
, unsigned long prot
)
1488 * Does we have PROT_READ and does the application expect
1489 * it to imply PROT_EXEC? If not, nothing to talk about...
1491 if ((prot
& (PROT_READ
| PROT_EXEC
)) != PROT_READ
)
1493 if (!(current
->personality
& READ_IMPLIES_EXEC
))
1496 * if that's an anonymous mapping, let it.
1499 return prot
| PROT_EXEC
;
1501 * ditto if it's not on noexec mount, except that on !MMU we need
1502 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1504 if (!path_noexec(&file
->f_path
)) {
1506 if (file
->f_op
->mmap_capabilities
) {
1507 unsigned caps
= file
->f_op
->mmap_capabilities(file
);
1508 if (!(caps
& NOMMU_MAP_EXEC
))
1512 return prot
| PROT_EXEC
;
1514 /* anything on noexec mount won't get PROT_EXEC */
1518 int security_mmap_file(struct file
*file
, unsigned long prot
,
1519 unsigned long flags
)
1522 ret
= call_int_hook(mmap_file
, 0, file
, prot
,
1523 mmap_prot(file
, prot
), flags
);
1526 return ima_file_mmap(file
, prot
);
1529 int security_mmap_addr(unsigned long addr
)
1531 return call_int_hook(mmap_addr
, 0, addr
);
1534 int security_file_mprotect(struct vm_area_struct
*vma
, unsigned long reqprot
,
1539 ret
= call_int_hook(file_mprotect
, 0, vma
, reqprot
, prot
);
1542 return ima_file_mprotect(vma
, prot
);
1545 int security_file_lock(struct file
*file
, unsigned int cmd
)
1547 return call_int_hook(file_lock
, 0, file
, cmd
);
1550 int security_file_fcntl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1552 return call_int_hook(file_fcntl
, 0, file
, cmd
, arg
);
1555 void security_file_set_fowner(struct file
*file
)
1557 call_void_hook(file_set_fowner
, file
);
1560 int security_file_send_sigiotask(struct task_struct
*tsk
,
1561 struct fown_struct
*fown
, int sig
)
1563 return call_int_hook(file_send_sigiotask
, 0, tsk
, fown
, sig
);
1566 int security_file_receive(struct file
*file
)
1568 return call_int_hook(file_receive
, 0, file
);
1571 int security_file_open(struct file
*file
)
1575 ret
= call_int_hook(file_open
, 0, file
);
1579 return fsnotify_perm(file
, MAY_OPEN
);
1582 int security_task_alloc(struct task_struct
*task
, unsigned long clone_flags
)
1584 int rc
= lsm_task_alloc(task
);
1588 rc
= call_int_hook(task_alloc
, 0, task
, clone_flags
);
1590 security_task_free(task
);
1594 void security_task_free(struct task_struct
*task
)
1596 call_void_hook(task_free
, task
);
1598 kfree(task
->security
);
1599 task
->security
= NULL
;
1602 int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
)
1604 int rc
= lsm_cred_alloc(cred
, gfp
);
1609 rc
= call_int_hook(cred_alloc_blank
, 0, cred
, gfp
);
1611 security_cred_free(cred
);
1615 void security_cred_free(struct cred
*cred
)
1618 * There is a failure case in prepare_creds() that
1619 * may result in a call here with ->security being NULL.
1621 if (unlikely(cred
->security
== NULL
))
1624 call_void_hook(cred_free
, cred
);
1626 kfree(cred
->security
);
1627 cred
->security
= NULL
;
1630 int security_prepare_creds(struct cred
*new, const struct cred
*old
, gfp_t gfp
)
1632 int rc
= lsm_cred_alloc(new, gfp
);
1637 rc
= call_int_hook(cred_prepare
, 0, new, old
, gfp
);
1639 security_cred_free(new);
1643 void security_transfer_creds(struct cred
*new, const struct cred
*old
)
1645 call_void_hook(cred_transfer
, new, old
);
1648 void security_cred_getsecid(const struct cred
*c
, u32
*secid
)
1651 call_void_hook(cred_getsecid
, c
, secid
);
1653 EXPORT_SYMBOL(security_cred_getsecid
);
1655 int security_kernel_act_as(struct cred
*new, u32 secid
)
1657 return call_int_hook(kernel_act_as
, 0, new, secid
);
1660 int security_kernel_create_files_as(struct cred
*new, struct inode
*inode
)
1662 return call_int_hook(kernel_create_files_as
, 0, new, inode
);
1665 int security_kernel_module_request(char *kmod_name
)
1669 ret
= call_int_hook(kernel_module_request
, 0, kmod_name
);
1672 return integrity_kernel_module_request(kmod_name
);
1675 int security_kernel_read_file(struct file
*file
, enum kernel_read_file_id id
,
1680 ret
= call_int_hook(kernel_read_file
, 0, file
, id
, contents
);
1683 return ima_read_file(file
, id
, contents
);
1685 EXPORT_SYMBOL_GPL(security_kernel_read_file
);
1687 int security_kernel_post_read_file(struct file
*file
, char *buf
, loff_t size
,
1688 enum kernel_read_file_id id
)
1692 ret
= call_int_hook(kernel_post_read_file
, 0, file
, buf
, size
, id
);
1695 return ima_post_read_file(file
, buf
, size
, id
);
1697 EXPORT_SYMBOL_GPL(security_kernel_post_read_file
);
1699 int security_kernel_load_data(enum kernel_load_data_id id
, bool contents
)
1703 ret
= call_int_hook(kernel_load_data
, 0, id
, contents
);
1706 return ima_load_data(id
, contents
);
1708 EXPORT_SYMBOL_GPL(security_kernel_load_data
);
1710 int security_kernel_post_load_data(char *buf
, loff_t size
,
1711 enum kernel_load_data_id id
,
1716 ret
= call_int_hook(kernel_post_load_data
, 0, buf
, size
, id
,
1720 return ima_post_load_data(buf
, size
, id
, description
);
1722 EXPORT_SYMBOL_GPL(security_kernel_post_load_data
);
1724 int security_task_fix_setuid(struct cred
*new, const struct cred
*old
,
1727 return call_int_hook(task_fix_setuid
, 0, new, old
, flags
);
1730 int security_task_fix_setgid(struct cred
*new, const struct cred
*old
,
1733 return call_int_hook(task_fix_setgid
, 0, new, old
, flags
);
1736 int security_task_setpgid(struct task_struct
*p
, pid_t pgid
)
1738 return call_int_hook(task_setpgid
, 0, p
, pgid
);
1741 int security_task_getpgid(struct task_struct
*p
)
1743 return call_int_hook(task_getpgid
, 0, p
);
1746 int security_task_getsid(struct task_struct
*p
)
1748 return call_int_hook(task_getsid
, 0, p
);
1751 void security_task_getsecid(struct task_struct
*p
, u32
*secid
)
1754 call_void_hook(task_getsecid
, p
, secid
);
1756 EXPORT_SYMBOL(security_task_getsecid
);
1758 int security_task_setnice(struct task_struct
*p
, int nice
)
1760 return call_int_hook(task_setnice
, 0, p
, nice
);
1763 int security_task_setioprio(struct task_struct
*p
, int ioprio
)
1765 return call_int_hook(task_setioprio
, 0, p
, ioprio
);
1768 int security_task_getioprio(struct task_struct
*p
)
1770 return call_int_hook(task_getioprio
, 0, p
);
1773 int security_task_prlimit(const struct cred
*cred
, const struct cred
*tcred
,
1776 return call_int_hook(task_prlimit
, 0, cred
, tcred
, flags
);
1779 int security_task_setrlimit(struct task_struct
*p
, unsigned int resource
,
1780 struct rlimit
*new_rlim
)
1782 return call_int_hook(task_setrlimit
, 0, p
, resource
, new_rlim
);
1785 int security_task_setscheduler(struct task_struct
*p
)
1787 return call_int_hook(task_setscheduler
, 0, p
);
1790 int security_task_getscheduler(struct task_struct
*p
)
1792 return call_int_hook(task_getscheduler
, 0, p
);
1795 int security_task_movememory(struct task_struct
*p
)
1797 return call_int_hook(task_movememory
, 0, p
);
1800 int security_task_kill(struct task_struct
*p
, struct kernel_siginfo
*info
,
1801 int sig
, const struct cred
*cred
)
1803 return call_int_hook(task_kill
, 0, p
, info
, sig
, cred
);
1806 int security_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1807 unsigned long arg4
, unsigned long arg5
)
1810 int rc
= LSM_RET_DEFAULT(task_prctl
);
1811 struct security_hook_list
*hp
;
1813 hlist_for_each_entry(hp
, &security_hook_heads
.task_prctl
, list
) {
1814 thisrc
= hp
->hook
.task_prctl(option
, arg2
, arg3
, arg4
, arg5
);
1815 if (thisrc
!= LSM_RET_DEFAULT(task_prctl
)) {
1824 void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
)
1826 call_void_hook(task_to_inode
, p
, inode
);
1829 int security_ipc_permission(struct kern_ipc_perm
*ipcp
, short flag
)
1831 return call_int_hook(ipc_permission
, 0, ipcp
, flag
);
1834 void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
)
1837 call_void_hook(ipc_getsecid
, ipcp
, secid
);
1840 int security_msg_msg_alloc(struct msg_msg
*msg
)
1842 int rc
= lsm_msg_msg_alloc(msg
);
1846 rc
= call_int_hook(msg_msg_alloc_security
, 0, msg
);
1848 security_msg_msg_free(msg
);
1852 void security_msg_msg_free(struct msg_msg
*msg
)
1854 call_void_hook(msg_msg_free_security
, msg
);
1855 kfree(msg
->security
);
1856 msg
->security
= NULL
;
1859 int security_msg_queue_alloc(struct kern_ipc_perm
*msq
)
1861 int rc
= lsm_ipc_alloc(msq
);
1865 rc
= call_int_hook(msg_queue_alloc_security
, 0, msq
);
1867 security_msg_queue_free(msq
);
1871 void security_msg_queue_free(struct kern_ipc_perm
*msq
)
1873 call_void_hook(msg_queue_free_security
, msq
);
1874 kfree(msq
->security
);
1875 msq
->security
= NULL
;
1878 int security_msg_queue_associate(struct kern_ipc_perm
*msq
, int msqflg
)
1880 return call_int_hook(msg_queue_associate
, 0, msq
, msqflg
);
1883 int security_msg_queue_msgctl(struct kern_ipc_perm
*msq
, int cmd
)
1885 return call_int_hook(msg_queue_msgctl
, 0, msq
, cmd
);
1888 int security_msg_queue_msgsnd(struct kern_ipc_perm
*msq
,
1889 struct msg_msg
*msg
, int msqflg
)
1891 return call_int_hook(msg_queue_msgsnd
, 0, msq
, msg
, msqflg
);
1894 int security_msg_queue_msgrcv(struct kern_ipc_perm
*msq
, struct msg_msg
*msg
,
1895 struct task_struct
*target
, long type
, int mode
)
1897 return call_int_hook(msg_queue_msgrcv
, 0, msq
, msg
, target
, type
, mode
);
1900 int security_shm_alloc(struct kern_ipc_perm
*shp
)
1902 int rc
= lsm_ipc_alloc(shp
);
1906 rc
= call_int_hook(shm_alloc_security
, 0, shp
);
1908 security_shm_free(shp
);
1912 void security_shm_free(struct kern_ipc_perm
*shp
)
1914 call_void_hook(shm_free_security
, shp
);
1915 kfree(shp
->security
);
1916 shp
->security
= NULL
;
1919 int security_shm_associate(struct kern_ipc_perm
*shp
, int shmflg
)
1921 return call_int_hook(shm_associate
, 0, shp
, shmflg
);
1924 int security_shm_shmctl(struct kern_ipc_perm
*shp
, int cmd
)
1926 return call_int_hook(shm_shmctl
, 0, shp
, cmd
);
1929 int security_shm_shmat(struct kern_ipc_perm
*shp
, char __user
*shmaddr
, int shmflg
)
1931 return call_int_hook(shm_shmat
, 0, shp
, shmaddr
, shmflg
);
1934 int security_sem_alloc(struct kern_ipc_perm
*sma
)
1936 int rc
= lsm_ipc_alloc(sma
);
1940 rc
= call_int_hook(sem_alloc_security
, 0, sma
);
1942 security_sem_free(sma
);
1946 void security_sem_free(struct kern_ipc_perm
*sma
)
1948 call_void_hook(sem_free_security
, sma
);
1949 kfree(sma
->security
);
1950 sma
->security
= NULL
;
1953 int security_sem_associate(struct kern_ipc_perm
*sma
, int semflg
)
1955 return call_int_hook(sem_associate
, 0, sma
, semflg
);
1958 int security_sem_semctl(struct kern_ipc_perm
*sma
, int cmd
)
1960 return call_int_hook(sem_semctl
, 0, sma
, cmd
);
1963 int security_sem_semop(struct kern_ipc_perm
*sma
, struct sembuf
*sops
,
1964 unsigned nsops
, int alter
)
1966 return call_int_hook(sem_semop
, 0, sma
, sops
, nsops
, alter
);
1969 void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
)
1971 if (unlikely(inode
&& IS_PRIVATE(inode
)))
1973 call_void_hook(d_instantiate
, dentry
, inode
);
1975 EXPORT_SYMBOL(security_d_instantiate
);
1977 int security_getprocattr(struct task_struct
*p
, const char *lsm
, char *name
,
1980 struct security_hook_list
*hp
;
1982 hlist_for_each_entry(hp
, &security_hook_heads
.getprocattr
, list
) {
1983 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
1985 return hp
->hook
.getprocattr(p
, name
, value
);
1987 return LSM_RET_DEFAULT(getprocattr
);
1990 int security_setprocattr(const char *lsm
, const char *name
, void *value
,
1993 struct security_hook_list
*hp
;
1995 hlist_for_each_entry(hp
, &security_hook_heads
.setprocattr
, list
) {
1996 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
1998 return hp
->hook
.setprocattr(name
, value
, size
);
2000 return LSM_RET_DEFAULT(setprocattr
);
2003 int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
)
2005 return call_int_hook(netlink_send
, 0, sk
, skb
);
2008 int security_ismaclabel(const char *name
)
2010 return call_int_hook(ismaclabel
, 0, name
);
2012 EXPORT_SYMBOL(security_ismaclabel
);
2014 int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
)
2016 struct security_hook_list
*hp
;
2020 * Currently, only one LSM can implement secid_to_secctx (i.e this
2021 * LSM hook is not "stackable").
2023 hlist_for_each_entry(hp
, &security_hook_heads
.secid_to_secctx
, list
) {
2024 rc
= hp
->hook
.secid_to_secctx(secid
, secdata
, seclen
);
2025 if (rc
!= LSM_RET_DEFAULT(secid_to_secctx
))
2029 return LSM_RET_DEFAULT(secid_to_secctx
);
2031 EXPORT_SYMBOL(security_secid_to_secctx
);
2033 int security_secctx_to_secid(const char *secdata
, u32 seclen
, u32
*secid
)
2036 return call_int_hook(secctx_to_secid
, 0, secdata
, seclen
, secid
);
2038 EXPORT_SYMBOL(security_secctx_to_secid
);
2040 void security_release_secctx(char *secdata
, u32 seclen
)
2042 call_void_hook(release_secctx
, secdata
, seclen
);
2044 EXPORT_SYMBOL(security_release_secctx
);
2046 void security_inode_invalidate_secctx(struct inode
*inode
)
2048 call_void_hook(inode_invalidate_secctx
, inode
);
2050 EXPORT_SYMBOL(security_inode_invalidate_secctx
);
2052 int security_inode_notifysecctx(struct inode
*inode
, void *ctx
, u32 ctxlen
)
2054 return call_int_hook(inode_notifysecctx
, 0, inode
, ctx
, ctxlen
);
2056 EXPORT_SYMBOL(security_inode_notifysecctx
);
2058 int security_inode_setsecctx(struct dentry
*dentry
, void *ctx
, u32 ctxlen
)
2060 return call_int_hook(inode_setsecctx
, 0, dentry
, ctx
, ctxlen
);
2062 EXPORT_SYMBOL(security_inode_setsecctx
);
2064 int security_inode_getsecctx(struct inode
*inode
, void **ctx
, u32
*ctxlen
)
2066 return call_int_hook(inode_getsecctx
, -EOPNOTSUPP
, inode
, ctx
, ctxlen
);
2068 EXPORT_SYMBOL(security_inode_getsecctx
);
2070 #ifdef CONFIG_WATCH_QUEUE
2071 int security_post_notification(const struct cred
*w_cred
,
2072 const struct cred
*cred
,
2073 struct watch_notification
*n
)
2075 return call_int_hook(post_notification
, 0, w_cred
, cred
, n
);
2077 #endif /* CONFIG_WATCH_QUEUE */
2079 #ifdef CONFIG_KEY_NOTIFICATIONS
2080 int security_watch_key(struct key
*key
)
2082 return call_int_hook(watch_key
, 0, key
);
2086 #ifdef CONFIG_SECURITY_NETWORK
2088 int security_unix_stream_connect(struct sock
*sock
, struct sock
*other
, struct sock
*newsk
)
2090 return call_int_hook(unix_stream_connect
, 0, sock
, other
, newsk
);
2092 EXPORT_SYMBOL(security_unix_stream_connect
);
2094 int security_unix_may_send(struct socket
*sock
, struct socket
*other
)
2096 return call_int_hook(unix_may_send
, 0, sock
, other
);
2098 EXPORT_SYMBOL(security_unix_may_send
);
2100 int security_socket_create(int family
, int type
, int protocol
, int kern
)
2102 return call_int_hook(socket_create
, 0, family
, type
, protocol
, kern
);
2105 int security_socket_post_create(struct socket
*sock
, int family
,
2106 int type
, int protocol
, int kern
)
2108 return call_int_hook(socket_post_create
, 0, sock
, family
, type
,
2112 int security_socket_socketpair(struct socket
*socka
, struct socket
*sockb
)
2114 return call_int_hook(socket_socketpair
, 0, socka
, sockb
);
2116 EXPORT_SYMBOL(security_socket_socketpair
);
2118 int security_socket_bind(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2120 return call_int_hook(socket_bind
, 0, sock
, address
, addrlen
);
2123 int security_socket_connect(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2125 return call_int_hook(socket_connect
, 0, sock
, address
, addrlen
);
2128 int security_socket_listen(struct socket
*sock
, int backlog
)
2130 return call_int_hook(socket_listen
, 0, sock
, backlog
);
2133 int security_socket_accept(struct socket
*sock
, struct socket
*newsock
)
2135 return call_int_hook(socket_accept
, 0, sock
, newsock
);
2138 int security_socket_sendmsg(struct socket
*sock
, struct msghdr
*msg
, int size
)
2140 return call_int_hook(socket_sendmsg
, 0, sock
, msg
, size
);
2143 int security_socket_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
2144 int size
, int flags
)
2146 return call_int_hook(socket_recvmsg
, 0, sock
, msg
, size
, flags
);
2149 int security_socket_getsockname(struct socket
*sock
)
2151 return call_int_hook(socket_getsockname
, 0, sock
);
2154 int security_socket_getpeername(struct socket
*sock
)
2156 return call_int_hook(socket_getpeername
, 0, sock
);
2159 int security_socket_getsockopt(struct socket
*sock
, int level
, int optname
)
2161 return call_int_hook(socket_getsockopt
, 0, sock
, level
, optname
);
2164 int security_socket_setsockopt(struct socket
*sock
, int level
, int optname
)
2166 return call_int_hook(socket_setsockopt
, 0, sock
, level
, optname
);
2169 int security_socket_shutdown(struct socket
*sock
, int how
)
2171 return call_int_hook(socket_shutdown
, 0, sock
, how
);
2174 int security_sock_rcv_skb(struct sock
*sk
, struct sk_buff
*skb
)
2176 return call_int_hook(socket_sock_rcv_skb
, 0, sk
, skb
);
2178 EXPORT_SYMBOL(security_sock_rcv_skb
);
2180 int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2181 int __user
*optlen
, unsigned len
)
2183 return call_int_hook(socket_getpeersec_stream
, -ENOPROTOOPT
, sock
,
2184 optval
, optlen
, len
);
2187 int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
)
2189 return call_int_hook(socket_getpeersec_dgram
, -ENOPROTOOPT
, sock
,
2192 EXPORT_SYMBOL(security_socket_getpeersec_dgram
);
2194 int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
)
2196 return call_int_hook(sk_alloc_security
, 0, sk
, family
, priority
);
2199 void security_sk_free(struct sock
*sk
)
2201 call_void_hook(sk_free_security
, sk
);
2204 void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
)
2206 call_void_hook(sk_clone_security
, sk
, newsk
);
2208 EXPORT_SYMBOL(security_sk_clone
);
2210 void security_sk_classify_flow(struct sock
*sk
, struct flowi
*fl
)
2212 call_void_hook(sk_getsecid
, sk
, &fl
->flowi_secid
);
2214 EXPORT_SYMBOL(security_sk_classify_flow
);
2216 void security_req_classify_flow(const struct request_sock
*req
, struct flowi
*fl
)
2218 call_void_hook(req_classify_flow
, req
, fl
);
2220 EXPORT_SYMBOL(security_req_classify_flow
);
2222 void security_sock_graft(struct sock
*sk
, struct socket
*parent
)
2224 call_void_hook(sock_graft
, sk
, parent
);
2226 EXPORT_SYMBOL(security_sock_graft
);
2228 int security_inet_conn_request(struct sock
*sk
,
2229 struct sk_buff
*skb
, struct request_sock
*req
)
2231 return call_int_hook(inet_conn_request
, 0, sk
, skb
, req
);
2233 EXPORT_SYMBOL(security_inet_conn_request
);
2235 void security_inet_csk_clone(struct sock
*newsk
,
2236 const struct request_sock
*req
)
2238 call_void_hook(inet_csk_clone
, newsk
, req
);
2241 void security_inet_conn_established(struct sock
*sk
,
2242 struct sk_buff
*skb
)
2244 call_void_hook(inet_conn_established
, sk
, skb
);
2246 EXPORT_SYMBOL(security_inet_conn_established
);
2248 int security_secmark_relabel_packet(u32 secid
)
2250 return call_int_hook(secmark_relabel_packet
, 0, secid
);
2252 EXPORT_SYMBOL(security_secmark_relabel_packet
);
2254 void security_secmark_refcount_inc(void)
2256 call_void_hook(secmark_refcount_inc
);
2258 EXPORT_SYMBOL(security_secmark_refcount_inc
);
2260 void security_secmark_refcount_dec(void)
2262 call_void_hook(secmark_refcount_dec
);
2264 EXPORT_SYMBOL(security_secmark_refcount_dec
);
2266 int security_tun_dev_alloc_security(void **security
)
2268 return call_int_hook(tun_dev_alloc_security
, 0, security
);
2270 EXPORT_SYMBOL(security_tun_dev_alloc_security
);
2272 void security_tun_dev_free_security(void *security
)
2274 call_void_hook(tun_dev_free_security
, security
);
2276 EXPORT_SYMBOL(security_tun_dev_free_security
);
2278 int security_tun_dev_create(void)
2280 return call_int_hook(tun_dev_create
, 0);
2282 EXPORT_SYMBOL(security_tun_dev_create
);
2284 int security_tun_dev_attach_queue(void *security
)
2286 return call_int_hook(tun_dev_attach_queue
, 0, security
);
2288 EXPORT_SYMBOL(security_tun_dev_attach_queue
);
2290 int security_tun_dev_attach(struct sock
*sk
, void *security
)
2292 return call_int_hook(tun_dev_attach
, 0, sk
, security
);
2294 EXPORT_SYMBOL(security_tun_dev_attach
);
2296 int security_tun_dev_open(void *security
)
2298 return call_int_hook(tun_dev_open
, 0, security
);
2300 EXPORT_SYMBOL(security_tun_dev_open
);
2302 int security_sctp_assoc_request(struct sctp_endpoint
*ep
, struct sk_buff
*skb
)
2304 return call_int_hook(sctp_assoc_request
, 0, ep
, skb
);
2306 EXPORT_SYMBOL(security_sctp_assoc_request
);
2308 int security_sctp_bind_connect(struct sock
*sk
, int optname
,
2309 struct sockaddr
*address
, int addrlen
)
2311 return call_int_hook(sctp_bind_connect
, 0, sk
, optname
,
2314 EXPORT_SYMBOL(security_sctp_bind_connect
);
2316 void security_sctp_sk_clone(struct sctp_endpoint
*ep
, struct sock
*sk
,
2319 call_void_hook(sctp_sk_clone
, ep
, sk
, newsk
);
2321 EXPORT_SYMBOL(security_sctp_sk_clone
);
2323 #endif /* CONFIG_SECURITY_NETWORK */
2325 #ifdef CONFIG_SECURITY_INFINIBAND
2327 int security_ib_pkey_access(void *sec
, u64 subnet_prefix
, u16 pkey
)
2329 return call_int_hook(ib_pkey_access
, 0, sec
, subnet_prefix
, pkey
);
2331 EXPORT_SYMBOL(security_ib_pkey_access
);
2333 int security_ib_endport_manage_subnet(void *sec
, const char *dev_name
, u8 port_num
)
2335 return call_int_hook(ib_endport_manage_subnet
, 0, sec
, dev_name
, port_num
);
2337 EXPORT_SYMBOL(security_ib_endport_manage_subnet
);
2339 int security_ib_alloc_security(void **sec
)
2341 return call_int_hook(ib_alloc_security
, 0, sec
);
2343 EXPORT_SYMBOL(security_ib_alloc_security
);
2345 void security_ib_free_security(void *sec
)
2347 call_void_hook(ib_free_security
, sec
);
2349 EXPORT_SYMBOL(security_ib_free_security
);
2350 #endif /* CONFIG_SECURITY_INFINIBAND */
2352 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2354 int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
,
2355 struct xfrm_user_sec_ctx
*sec_ctx
,
2358 return call_int_hook(xfrm_policy_alloc_security
, 0, ctxp
, sec_ctx
, gfp
);
2360 EXPORT_SYMBOL(security_xfrm_policy_alloc
);
2362 int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old_ctx
,
2363 struct xfrm_sec_ctx
**new_ctxp
)
2365 return call_int_hook(xfrm_policy_clone_security
, 0, old_ctx
, new_ctxp
);
2368 void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
)
2370 call_void_hook(xfrm_policy_free_security
, ctx
);
2372 EXPORT_SYMBOL(security_xfrm_policy_free
);
2374 int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
)
2376 return call_int_hook(xfrm_policy_delete_security
, 0, ctx
);
2379 int security_xfrm_state_alloc(struct xfrm_state
*x
,
2380 struct xfrm_user_sec_ctx
*sec_ctx
)
2382 return call_int_hook(xfrm_state_alloc
, 0, x
, sec_ctx
);
2384 EXPORT_SYMBOL(security_xfrm_state_alloc
);
2386 int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2387 struct xfrm_sec_ctx
*polsec
, u32 secid
)
2389 return call_int_hook(xfrm_state_alloc_acquire
, 0, x
, polsec
, secid
);
2392 int security_xfrm_state_delete(struct xfrm_state
*x
)
2394 return call_int_hook(xfrm_state_delete_security
, 0, x
);
2396 EXPORT_SYMBOL(security_xfrm_state_delete
);
2398 void security_xfrm_state_free(struct xfrm_state
*x
)
2400 call_void_hook(xfrm_state_free_security
, x
);
2403 int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
)
2405 return call_int_hook(xfrm_policy_lookup
, 0, ctx
, fl_secid
, dir
);
2408 int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2409 struct xfrm_policy
*xp
,
2410 const struct flowi
*fl
)
2412 struct security_hook_list
*hp
;
2413 int rc
= LSM_RET_DEFAULT(xfrm_state_pol_flow_match
);
2416 * Since this function is expected to return 0 or 1, the judgment
2417 * becomes difficult if multiple LSMs supply this call. Fortunately,
2418 * we can use the first LSM's judgment because currently only SELinux
2419 * supplies this call.
2421 * For speed optimization, we explicitly break the loop rather than
2424 hlist_for_each_entry(hp
, &security_hook_heads
.xfrm_state_pol_flow_match
,
2426 rc
= hp
->hook
.xfrm_state_pol_flow_match(x
, xp
, fl
);
2432 int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
)
2434 return call_int_hook(xfrm_decode_session
, 0, skb
, secid
, 1);
2437 void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi
*fl
)
2439 int rc
= call_int_hook(xfrm_decode_session
, 0, skb
, &fl
->flowi_secid
,
2444 EXPORT_SYMBOL(security_skb_classify_flow
);
2446 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2450 int security_key_alloc(struct key
*key
, const struct cred
*cred
,
2451 unsigned long flags
)
2453 return call_int_hook(key_alloc
, 0, key
, cred
, flags
);
2456 void security_key_free(struct key
*key
)
2458 call_void_hook(key_free
, key
);
2461 int security_key_permission(key_ref_t key_ref
, const struct cred
*cred
,
2462 enum key_need_perm need_perm
)
2464 return call_int_hook(key_permission
, 0, key_ref
, cred
, need_perm
);
2467 int security_key_getsecurity(struct key
*key
, char **_buffer
)
2470 return call_int_hook(key_getsecurity
, 0, key
, _buffer
);
2473 #endif /* CONFIG_KEYS */
2477 int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
, void **lsmrule
)
2479 return call_int_hook(audit_rule_init
, 0, field
, op
, rulestr
, lsmrule
);
2482 int security_audit_rule_known(struct audit_krule
*krule
)
2484 return call_int_hook(audit_rule_known
, 0, krule
);
2487 void security_audit_rule_free(void *lsmrule
)
2489 call_void_hook(audit_rule_free
, lsmrule
);
2492 int security_audit_rule_match(u32 secid
, u32 field
, u32 op
, void *lsmrule
)
2494 return call_int_hook(audit_rule_match
, 0, secid
, field
, op
, lsmrule
);
2496 #endif /* CONFIG_AUDIT */
2498 #ifdef CONFIG_BPF_SYSCALL
2499 int security_bpf(int cmd
, union bpf_attr
*attr
, unsigned int size
)
2501 return call_int_hook(bpf
, 0, cmd
, attr
, size
);
2503 int security_bpf_map(struct bpf_map
*map
, fmode_t fmode
)
2505 return call_int_hook(bpf_map
, 0, map
, fmode
);
2507 int security_bpf_prog(struct bpf_prog
*prog
)
2509 return call_int_hook(bpf_prog
, 0, prog
);
2511 int security_bpf_map_alloc(struct bpf_map
*map
)
2513 return call_int_hook(bpf_map_alloc_security
, 0, map
);
2515 int security_bpf_prog_alloc(struct bpf_prog_aux
*aux
)
2517 return call_int_hook(bpf_prog_alloc_security
, 0, aux
);
2519 void security_bpf_map_free(struct bpf_map
*map
)
2521 call_void_hook(bpf_map_free_security
, map
);
2523 void security_bpf_prog_free(struct bpf_prog_aux
*aux
)
2525 call_void_hook(bpf_prog_free_security
, aux
);
2527 #endif /* CONFIG_BPF_SYSCALL */
2529 int security_locked_down(enum lockdown_reason what
)
2531 return call_int_hook(locked_down
, 0, what
);
2533 EXPORT_SYMBOL(security_locked_down
);
2535 #ifdef CONFIG_PERF_EVENTS
2536 int security_perf_event_open(struct perf_event_attr
*attr
, int type
)
2538 return call_int_hook(perf_event_open
, 0, attr
, type
);
2541 int security_perf_event_alloc(struct perf_event
*event
)
2543 return call_int_hook(perf_event_alloc
, 0, event
);
2546 void security_perf_event_free(struct perf_event
*event
)
2548 call_void_hook(perf_event_free
, event
);
2551 int security_perf_event_read(struct perf_event
*event
)
2553 return call_int_hook(perf_event_read
, 0, event
);
2556 int security_perf_event_write(struct perf_event
*event
)
2558 return call_int_hook(perf_event_write
, 0, event
);
2560 #endif /* CONFIG_PERF_EVENTS */