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_XFRM_SECRET
] = "xfrm SA secret",
69 [LOCKDOWN_CONFIDENTIALITY_MAX
] = "confidentiality",
72 struct security_hook_heads security_hook_heads __lsm_ro_after_init
;
73 static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain
);
75 static struct kmem_cache
*lsm_file_cache
;
76 static struct kmem_cache
*lsm_inode_cache
;
79 static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init
;
81 /* Boot-time LSM user choice */
82 static __initdata
const char *chosen_lsm_order
;
83 static __initdata
const char *chosen_major_lsm
;
85 static __initconst
const char * const builtin_lsm_order
= CONFIG_LSM
;
87 /* Ordered list of LSMs to initialize. */
88 static __initdata
struct lsm_info
**ordered_lsms
;
89 static __initdata
struct lsm_info
*exclusive
;
91 static __initdata
bool debug
;
92 #define init_debug(...) \
95 pr_info(__VA_ARGS__); \
98 static bool __init
is_enabled(struct lsm_info
*lsm
)
103 return *lsm
->enabled
;
106 /* Mark an LSM's enabled flag. */
107 static int lsm_enabled_true __initdata
= 1;
108 static int lsm_enabled_false __initdata
= 0;
109 static void __init
set_enabled(struct lsm_info
*lsm
, bool enabled
)
112 * When an LSM hasn't configured an enable variable, we can use
113 * a hard-coded location for storing the default enabled state.
117 lsm
->enabled
= &lsm_enabled_true
;
119 lsm
->enabled
= &lsm_enabled_false
;
120 } else if (lsm
->enabled
== &lsm_enabled_true
) {
122 lsm
->enabled
= &lsm_enabled_false
;
123 } else if (lsm
->enabled
== &lsm_enabled_false
) {
125 lsm
->enabled
= &lsm_enabled_true
;
127 *lsm
->enabled
= enabled
;
131 /* Is an LSM already listed in the ordered LSMs list? */
132 static bool __init
exists_ordered_lsm(struct lsm_info
*lsm
)
134 struct lsm_info
**check
;
136 for (check
= ordered_lsms
; *check
; check
++)
143 /* Append an LSM to the list of ordered LSMs to initialize. */
144 static int last_lsm __initdata
;
145 static void __init
append_ordered_lsm(struct lsm_info
*lsm
, const char *from
)
147 /* Ignore duplicate selections. */
148 if (exists_ordered_lsm(lsm
))
151 if (WARN(last_lsm
== LSM_COUNT
, "%s: out of LSM slots!?\n", from
))
154 /* Enable this LSM, if it is not already set. */
156 lsm
->enabled
= &lsm_enabled_true
;
157 ordered_lsms
[last_lsm
++] = lsm
;
159 init_debug("%s ordering: %s (%sabled)\n", from
, lsm
->name
,
160 is_enabled(lsm
) ? "en" : "dis");
163 /* Is an LSM allowed to be initialized? */
164 static bool __init
lsm_allowed(struct lsm_info
*lsm
)
166 /* Skip if the LSM is disabled. */
167 if (!is_enabled(lsm
))
170 /* Not allowed if another exclusive LSM already initialized. */
171 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && exclusive
) {
172 init_debug("exclusive disabled: %s\n", lsm
->name
);
179 static void __init
lsm_set_blob_size(int *need
, int *lbs
)
190 static void __init
lsm_set_blob_sizes(struct lsm_blob_sizes
*needed
)
195 lsm_set_blob_size(&needed
->lbs_cred
, &blob_sizes
.lbs_cred
);
196 lsm_set_blob_size(&needed
->lbs_file
, &blob_sizes
.lbs_file
);
198 * The inode blob gets an rcu_head in addition to
199 * what the modules might need.
201 if (needed
->lbs_inode
&& blob_sizes
.lbs_inode
== 0)
202 blob_sizes
.lbs_inode
= sizeof(struct rcu_head
);
203 lsm_set_blob_size(&needed
->lbs_inode
, &blob_sizes
.lbs_inode
);
204 lsm_set_blob_size(&needed
->lbs_ipc
, &blob_sizes
.lbs_ipc
);
205 lsm_set_blob_size(&needed
->lbs_msg_msg
, &blob_sizes
.lbs_msg_msg
);
206 lsm_set_blob_size(&needed
->lbs_task
, &blob_sizes
.lbs_task
);
209 /* Prepare LSM for initialization. */
210 static void __init
prepare_lsm(struct lsm_info
*lsm
)
212 int enabled
= lsm_allowed(lsm
);
214 /* Record enablement (to handle any following exclusive LSMs). */
215 set_enabled(lsm
, enabled
);
217 /* If enabled, do pre-initialization work. */
219 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && !exclusive
) {
221 init_debug("exclusive chosen: %s\n", lsm
->name
);
224 lsm_set_blob_sizes(lsm
->blobs
);
228 /* Initialize a given LSM, if it is enabled. */
229 static void __init
initialize_lsm(struct lsm_info
*lsm
)
231 if (is_enabled(lsm
)) {
234 init_debug("initializing %s\n", lsm
->name
);
236 WARN(ret
, "%s failed to initialize: %d\n", lsm
->name
, ret
);
240 /* Populate ordered LSMs list from comma-separated LSM name list. */
241 static void __init
ordered_lsm_parse(const char *order
, const char *origin
)
243 struct lsm_info
*lsm
;
244 char *sep
, *name
, *next
;
246 /* LSM_ORDER_FIRST is always first. */
247 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
248 if (lsm
->order
== LSM_ORDER_FIRST
)
249 append_ordered_lsm(lsm
, "first");
252 /* Process "security=", if given. */
253 if (chosen_major_lsm
) {
254 struct lsm_info
*major
;
257 * To match the original "security=" behavior, this
258 * explicitly does NOT fallback to another Legacy Major
259 * if the selected one was separately disabled: disable
260 * all non-matching Legacy Major LSMs.
262 for (major
= __start_lsm_info
; major
< __end_lsm_info
;
264 if ((major
->flags
& LSM_FLAG_LEGACY_MAJOR
) &&
265 strcmp(major
->name
, chosen_major_lsm
) != 0) {
266 set_enabled(major
, false);
267 init_debug("security=%s disabled: %s\n",
268 chosen_major_lsm
, major
->name
);
273 sep
= kstrdup(order
, GFP_KERNEL
);
275 /* Walk the list, looking for matching LSMs. */
276 while ((name
= strsep(&next
, ",")) != NULL
) {
279 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
280 if (lsm
->order
== LSM_ORDER_MUTABLE
&&
281 strcmp(lsm
->name
, name
) == 0) {
282 append_ordered_lsm(lsm
, origin
);
288 init_debug("%s ignored: %s\n", origin
, name
);
291 /* Process "security=", if given. */
292 if (chosen_major_lsm
) {
293 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
294 if (exists_ordered_lsm(lsm
))
296 if (strcmp(lsm
->name
, chosen_major_lsm
) == 0)
297 append_ordered_lsm(lsm
, "security=");
301 /* Disable all LSMs not in the ordered list. */
302 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
303 if (exists_ordered_lsm(lsm
))
305 set_enabled(lsm
, false);
306 init_debug("%s disabled: %s\n", origin
, lsm
->name
);
312 static void __init
lsm_early_cred(struct cred
*cred
);
313 static void __init
lsm_early_task(struct task_struct
*task
);
315 static int lsm_append(const char *new, char **result
);
317 static void __init
ordered_lsm_init(void)
319 struct lsm_info
**lsm
;
321 ordered_lsms
= kcalloc(LSM_COUNT
+ 1, sizeof(*ordered_lsms
),
324 if (chosen_lsm_order
) {
325 if (chosen_major_lsm
) {
326 pr_info("security= is ignored because it is superseded by lsm=\n");
327 chosen_major_lsm
= NULL
;
329 ordered_lsm_parse(chosen_lsm_order
, "cmdline");
331 ordered_lsm_parse(builtin_lsm_order
, "builtin");
333 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
336 init_debug("cred blob size = %d\n", blob_sizes
.lbs_cred
);
337 init_debug("file blob size = %d\n", blob_sizes
.lbs_file
);
338 init_debug("inode blob size = %d\n", blob_sizes
.lbs_inode
);
339 init_debug("ipc blob size = %d\n", blob_sizes
.lbs_ipc
);
340 init_debug("msg_msg blob size = %d\n", blob_sizes
.lbs_msg_msg
);
341 init_debug("task blob size = %d\n", blob_sizes
.lbs_task
);
344 * Create any kmem_caches needed for blobs
346 if (blob_sizes
.lbs_file
)
347 lsm_file_cache
= kmem_cache_create("lsm_file_cache",
348 blob_sizes
.lbs_file
, 0,
350 if (blob_sizes
.lbs_inode
)
351 lsm_inode_cache
= kmem_cache_create("lsm_inode_cache",
352 blob_sizes
.lbs_inode
, 0,
355 lsm_early_cred((struct cred
*) current
->cred
);
356 lsm_early_task(current
);
357 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
358 initialize_lsm(*lsm
);
363 int __init
early_security_init(void)
366 struct hlist_head
*list
= (struct hlist_head
*) &security_hook_heads
;
367 struct lsm_info
*lsm
;
369 for (i
= 0; i
< sizeof(security_hook_heads
) / sizeof(struct hlist_head
);
371 INIT_HLIST_HEAD(&list
[i
]);
373 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
375 lsm
->enabled
= &lsm_enabled_true
;
384 * security_init - initializes the security framework
386 * This should be called early in the kernel initialization sequence.
388 int __init
security_init(void)
390 struct lsm_info
*lsm
;
392 pr_info("Security Framework initializing\n");
395 * Append the names of the early LSM modules now that kmalloc() is
398 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
400 lsm_append(lsm
->name
, &lsm_names
);
403 /* Load LSMs in specified order. */
409 /* Save user chosen LSM */
410 static int __init
choose_major_lsm(char *str
)
412 chosen_major_lsm
= str
;
415 __setup("security=", choose_major_lsm
);
417 /* Explicitly choose LSM initialization order. */
418 static int __init
choose_lsm_order(char *str
)
420 chosen_lsm_order
= str
;
423 __setup("lsm=", choose_lsm_order
);
425 /* Enable LSM order debugging. */
426 static int __init
enable_debug(char *str
)
431 __setup("lsm.debug", enable_debug
);
433 static bool match_last_lsm(const char *list
, const char *lsm
)
437 if (WARN_ON(!list
|| !lsm
))
439 last
= strrchr(list
, ',');
441 /* Pass the comma, strcmp() will check for '\0' */
445 return !strcmp(last
, lsm
);
448 static int lsm_append(const char *new, char **result
)
452 if (*result
== NULL
) {
453 *result
= kstrdup(new, GFP_KERNEL
);
457 /* Check if it is the last registered name */
458 if (match_last_lsm(*result
, new))
460 cp
= kasprintf(GFP_KERNEL
, "%s,%s", *result
, new);
470 * security_add_hooks - Add a modules hooks to the hook lists.
471 * @hooks: the hooks to add
472 * @count: the number of hooks to add
473 * @lsm: the name of the security module
475 * Each LSM has to register its hooks with the infrastructure.
477 void __init
security_add_hooks(struct security_hook_list
*hooks
, int count
,
482 for (i
= 0; i
< count
; i
++) {
484 hlist_add_tail_rcu(&hooks
[i
].list
, hooks
[i
].head
);
488 * Don't try to append during early_security_init(), we'll come back
489 * and fix this up afterwards.
491 if (slab_is_available()) {
492 if (lsm_append(lsm
, &lsm_names
) < 0)
493 panic("%s - Cannot get early memory.\n", __func__
);
497 int call_blocking_lsm_notifier(enum lsm_event event
, void *data
)
499 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain
,
502 EXPORT_SYMBOL(call_blocking_lsm_notifier
);
504 int register_blocking_lsm_notifier(struct notifier_block
*nb
)
506 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain
,
509 EXPORT_SYMBOL(register_blocking_lsm_notifier
);
511 int unregister_blocking_lsm_notifier(struct notifier_block
*nb
)
513 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain
,
516 EXPORT_SYMBOL(unregister_blocking_lsm_notifier
);
519 * lsm_cred_alloc - allocate a composite cred blob
520 * @cred: the cred that needs a blob
521 * @gfp: allocation type
523 * Allocate the cred blob for all the modules
525 * Returns 0, or -ENOMEM if memory can't be allocated.
527 static int lsm_cred_alloc(struct cred
*cred
, gfp_t gfp
)
529 if (blob_sizes
.lbs_cred
== 0) {
530 cred
->security
= NULL
;
534 cred
->security
= kzalloc(blob_sizes
.lbs_cred
, gfp
);
535 if (cred
->security
== NULL
)
541 * lsm_early_cred - during initialization allocate a composite cred blob
542 * @cred: the cred that needs a blob
544 * Allocate the cred blob for all the modules
546 static void __init
lsm_early_cred(struct cred
*cred
)
548 int rc
= lsm_cred_alloc(cred
, GFP_KERNEL
);
551 panic("%s: Early cred alloc failed.\n", __func__
);
555 * lsm_file_alloc - allocate a composite file blob
556 * @file: the file that needs a blob
558 * Allocate the file blob for all the modules
560 * Returns 0, or -ENOMEM if memory can't be allocated.
562 static int lsm_file_alloc(struct file
*file
)
564 if (!lsm_file_cache
) {
565 file
->f_security
= NULL
;
569 file
->f_security
= kmem_cache_zalloc(lsm_file_cache
, GFP_KERNEL
);
570 if (file
->f_security
== NULL
)
576 * lsm_inode_alloc - allocate a composite inode blob
577 * @inode: the inode that needs a blob
579 * Allocate the inode blob for all the modules
581 * Returns 0, or -ENOMEM if memory can't be allocated.
583 int lsm_inode_alloc(struct inode
*inode
)
585 if (!lsm_inode_cache
) {
586 inode
->i_security
= NULL
;
590 inode
->i_security
= kmem_cache_zalloc(lsm_inode_cache
, GFP_NOFS
);
591 if (inode
->i_security
== NULL
)
597 * lsm_task_alloc - allocate a composite task blob
598 * @task: the task that needs a blob
600 * Allocate the task blob for all the modules
602 * Returns 0, or -ENOMEM if memory can't be allocated.
604 static int lsm_task_alloc(struct task_struct
*task
)
606 if (blob_sizes
.lbs_task
== 0) {
607 task
->security
= NULL
;
611 task
->security
= kzalloc(blob_sizes
.lbs_task
, GFP_KERNEL
);
612 if (task
->security
== NULL
)
618 * lsm_ipc_alloc - allocate a composite ipc blob
619 * @kip: the ipc that needs a blob
621 * Allocate the ipc blob for all the modules
623 * Returns 0, or -ENOMEM if memory can't be allocated.
625 static int lsm_ipc_alloc(struct kern_ipc_perm
*kip
)
627 if (blob_sizes
.lbs_ipc
== 0) {
628 kip
->security
= NULL
;
632 kip
->security
= kzalloc(blob_sizes
.lbs_ipc
, GFP_KERNEL
);
633 if (kip
->security
== NULL
)
639 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
640 * @mp: the msg_msg that needs a blob
642 * Allocate the ipc blob for all the modules
644 * Returns 0, or -ENOMEM if memory can't be allocated.
646 static int lsm_msg_msg_alloc(struct msg_msg
*mp
)
648 if (blob_sizes
.lbs_msg_msg
== 0) {
653 mp
->security
= kzalloc(blob_sizes
.lbs_msg_msg
, GFP_KERNEL
);
654 if (mp
->security
== NULL
)
660 * lsm_early_task - during initialization allocate a composite task blob
661 * @task: the task that needs a blob
663 * Allocate the task blob for all the modules
665 static void __init
lsm_early_task(struct task_struct
*task
)
667 int rc
= lsm_task_alloc(task
);
670 panic("%s: Early task alloc failed.\n", __func__
);
674 * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
675 * can be accessed with:
677 * LSM_RET_DEFAULT(<hook_name>)
679 * The macros below define static constants for the default value of each
682 #define LSM_RET_DEFAULT(NAME) (NAME##_default)
683 #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
684 #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
685 static const int LSM_RET_DEFAULT(NAME) = (DEFAULT);
686 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
687 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
689 #include <linux/lsm_hook_defs.h>
693 * Hook list operation macros.
696 * This is a hook that does not return a value.
699 * This is a hook that returns a value.
702 #define call_void_hook(FUNC, ...) \
704 struct security_hook_list *P; \
706 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
707 P->hook.FUNC(__VA_ARGS__); \
710 #define call_int_hook(FUNC, IRC, ...) ({ \
713 struct security_hook_list *P; \
715 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
716 RC = P->hook.FUNC(__VA_ARGS__); \
724 /* Security operations */
726 int security_binder_set_context_mgr(struct task_struct
*mgr
)
728 return call_int_hook(binder_set_context_mgr
, 0, mgr
);
731 int security_binder_transaction(struct task_struct
*from
,
732 struct task_struct
*to
)
734 return call_int_hook(binder_transaction
, 0, from
, to
);
737 int security_binder_transfer_binder(struct task_struct
*from
,
738 struct task_struct
*to
)
740 return call_int_hook(binder_transfer_binder
, 0, from
, to
);
743 int security_binder_transfer_file(struct task_struct
*from
,
744 struct task_struct
*to
, struct file
*file
)
746 return call_int_hook(binder_transfer_file
, 0, from
, to
, file
);
749 int security_ptrace_access_check(struct task_struct
*child
, unsigned int mode
)
751 return call_int_hook(ptrace_access_check
, 0, child
, mode
);
754 int security_ptrace_traceme(struct task_struct
*parent
)
756 return call_int_hook(ptrace_traceme
, 0, parent
);
759 int security_capget(struct task_struct
*target
,
760 kernel_cap_t
*effective
,
761 kernel_cap_t
*inheritable
,
762 kernel_cap_t
*permitted
)
764 return call_int_hook(capget
, 0, target
,
765 effective
, inheritable
, permitted
);
768 int security_capset(struct cred
*new, const struct cred
*old
,
769 const kernel_cap_t
*effective
,
770 const kernel_cap_t
*inheritable
,
771 const kernel_cap_t
*permitted
)
773 return call_int_hook(capset
, 0, new, old
,
774 effective
, inheritable
, permitted
);
777 int security_capable(const struct cred
*cred
,
778 struct user_namespace
*ns
,
782 return call_int_hook(capable
, 0, cred
, ns
, cap
, opts
);
785 int security_quotactl(int cmds
, int type
, int id
, struct super_block
*sb
)
787 return call_int_hook(quotactl
, 0, cmds
, type
, id
, sb
);
790 int security_quota_on(struct dentry
*dentry
)
792 return call_int_hook(quota_on
, 0, dentry
);
795 int security_syslog(int type
)
797 return call_int_hook(syslog
, 0, type
);
800 int security_settime64(const struct timespec64
*ts
, const struct timezone
*tz
)
802 return call_int_hook(settime
, 0, ts
, tz
);
805 int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
)
807 struct security_hook_list
*hp
;
808 int cap_sys_admin
= 1;
812 * The module will respond with a positive value if
813 * it thinks the __vm_enough_memory() call should be
814 * made with the cap_sys_admin set. If all of the modules
815 * agree that it should be set it will. If any module
816 * thinks it should not be set it won't.
818 hlist_for_each_entry(hp
, &security_hook_heads
.vm_enough_memory
, list
) {
819 rc
= hp
->hook
.vm_enough_memory(mm
, pages
);
825 return __vm_enough_memory(mm
, pages
, cap_sys_admin
);
828 int security_bprm_creds_for_exec(struct linux_binprm
*bprm
)
830 return call_int_hook(bprm_creds_for_exec
, 0, bprm
);
833 int security_bprm_creds_from_file(struct linux_binprm
*bprm
, struct file
*file
)
835 return call_int_hook(bprm_creds_from_file
, 0, bprm
, file
);
838 int security_bprm_check(struct linux_binprm
*bprm
)
842 ret
= call_int_hook(bprm_check_security
, 0, bprm
);
845 return ima_bprm_check(bprm
);
848 void security_bprm_committing_creds(struct linux_binprm
*bprm
)
850 call_void_hook(bprm_committing_creds
, bprm
);
853 void security_bprm_committed_creds(struct linux_binprm
*bprm
)
855 call_void_hook(bprm_committed_creds
, bprm
);
858 int security_fs_context_dup(struct fs_context
*fc
, struct fs_context
*src_fc
)
860 return call_int_hook(fs_context_dup
, 0, fc
, src_fc
);
863 int security_fs_context_parse_param(struct fs_context
*fc
, struct fs_parameter
*param
)
865 return call_int_hook(fs_context_parse_param
, -ENOPARAM
, fc
, param
);
868 int security_sb_alloc(struct super_block
*sb
)
870 return call_int_hook(sb_alloc_security
, 0, sb
);
873 void security_sb_free(struct super_block
*sb
)
875 call_void_hook(sb_free_security
, sb
);
878 void security_free_mnt_opts(void **mnt_opts
)
882 call_void_hook(sb_free_mnt_opts
, *mnt_opts
);
885 EXPORT_SYMBOL(security_free_mnt_opts
);
887 int security_sb_eat_lsm_opts(char *options
, void **mnt_opts
)
889 return call_int_hook(sb_eat_lsm_opts
, 0, options
, mnt_opts
);
891 EXPORT_SYMBOL(security_sb_eat_lsm_opts
);
893 int security_sb_remount(struct super_block
*sb
,
896 return call_int_hook(sb_remount
, 0, sb
, mnt_opts
);
898 EXPORT_SYMBOL(security_sb_remount
);
900 int security_sb_kern_mount(struct super_block
*sb
)
902 return call_int_hook(sb_kern_mount
, 0, sb
);
905 int security_sb_show_options(struct seq_file
*m
, struct super_block
*sb
)
907 return call_int_hook(sb_show_options
, 0, m
, sb
);
910 int security_sb_statfs(struct dentry
*dentry
)
912 return call_int_hook(sb_statfs
, 0, dentry
);
915 int security_sb_mount(const char *dev_name
, const struct path
*path
,
916 const char *type
, unsigned long flags
, void *data
)
918 return call_int_hook(sb_mount
, 0, dev_name
, path
, type
, flags
, data
);
921 int security_sb_umount(struct vfsmount
*mnt
, int flags
)
923 return call_int_hook(sb_umount
, 0, mnt
, flags
);
926 int security_sb_pivotroot(const struct path
*old_path
, const struct path
*new_path
)
928 return call_int_hook(sb_pivotroot
, 0, old_path
, new_path
);
931 int security_sb_set_mnt_opts(struct super_block
*sb
,
933 unsigned long kern_flags
,
934 unsigned long *set_kern_flags
)
936 return call_int_hook(sb_set_mnt_opts
,
937 mnt_opts
? -EOPNOTSUPP
: 0, sb
,
938 mnt_opts
, kern_flags
, set_kern_flags
);
940 EXPORT_SYMBOL(security_sb_set_mnt_opts
);
942 int security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
943 struct super_block
*newsb
,
944 unsigned long kern_flags
,
945 unsigned long *set_kern_flags
)
947 return call_int_hook(sb_clone_mnt_opts
, 0, oldsb
, newsb
,
948 kern_flags
, set_kern_flags
);
950 EXPORT_SYMBOL(security_sb_clone_mnt_opts
);
952 int security_add_mnt_opt(const char *option
, const char *val
, int len
,
955 return call_int_hook(sb_add_mnt_opt
, -EINVAL
,
956 option
, val
, len
, mnt_opts
);
958 EXPORT_SYMBOL(security_add_mnt_opt
);
960 int security_move_mount(const struct path
*from_path
, const struct path
*to_path
)
962 return call_int_hook(move_mount
, 0, from_path
, to_path
);
965 int security_path_notify(const struct path
*path
, u64 mask
,
966 unsigned int obj_type
)
968 return call_int_hook(path_notify
, 0, path
, mask
, obj_type
);
971 int security_inode_alloc(struct inode
*inode
)
973 int rc
= lsm_inode_alloc(inode
);
977 rc
= call_int_hook(inode_alloc_security
, 0, inode
);
979 security_inode_free(inode
);
983 static void inode_free_by_rcu(struct rcu_head
*head
)
986 * The rcu head is at the start of the inode blob
988 kmem_cache_free(lsm_inode_cache
, head
);
991 void security_inode_free(struct inode
*inode
)
993 integrity_inode_free(inode
);
994 call_void_hook(inode_free_security
, inode
);
996 * The inode may still be referenced in a path walk and
997 * a call to security_inode_permission() can be made
998 * after inode_free_security() is called. Ideally, the VFS
999 * wouldn't do this, but fixing that is a much harder
1000 * job. For now, simply free the i_security via RCU, and
1001 * leave the current inode->i_security pointer intact.
1002 * The inode will be freed after the RCU grace period too.
1004 if (inode
->i_security
)
1005 call_rcu((struct rcu_head
*)inode
->i_security
,
1009 int security_dentry_init_security(struct dentry
*dentry
, int mode
,
1010 const struct qstr
*name
, void **ctx
,
1013 return call_int_hook(dentry_init_security
, -EOPNOTSUPP
, dentry
, mode
,
1016 EXPORT_SYMBOL(security_dentry_init_security
);
1018 int security_dentry_create_files_as(struct dentry
*dentry
, int mode
,
1020 const struct cred
*old
, struct cred
*new)
1022 return call_int_hook(dentry_create_files_as
, 0, dentry
, mode
,
1025 EXPORT_SYMBOL(security_dentry_create_files_as
);
1027 int security_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1028 const struct qstr
*qstr
,
1029 const initxattrs initxattrs
, void *fs_data
)
1031 struct xattr new_xattrs
[MAX_LSM_EVM_XATTR
+ 1];
1032 struct xattr
*lsm_xattr
, *evm_xattr
, *xattr
;
1035 if (unlikely(IS_PRIVATE(inode
)))
1039 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
,
1040 dir
, qstr
, NULL
, NULL
, NULL
);
1041 memset(new_xattrs
, 0, sizeof(new_xattrs
));
1042 lsm_xattr
= new_xattrs
;
1043 ret
= call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
, qstr
,
1046 &lsm_xattr
->value_len
);
1050 evm_xattr
= lsm_xattr
+ 1;
1051 ret
= evm_inode_init_security(inode
, lsm_xattr
, evm_xattr
);
1054 ret
= initxattrs(inode
, new_xattrs
, fs_data
);
1056 for (xattr
= new_xattrs
; xattr
->value
!= NULL
; xattr
++)
1057 kfree(xattr
->value
);
1058 return (ret
== -EOPNOTSUPP
) ? 0 : ret
;
1060 EXPORT_SYMBOL(security_inode_init_security
);
1062 int security_inode_init_security_anon(struct inode
*inode
,
1063 const struct qstr
*name
,
1064 const struct inode
*context_inode
)
1066 return call_int_hook(inode_init_security_anon
, 0, inode
, name
,
1070 int security_old_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1071 const struct qstr
*qstr
, const char **name
,
1072 void **value
, size_t *len
)
1074 if (unlikely(IS_PRIVATE(inode
)))
1076 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
,
1077 qstr
, name
, value
, len
);
1079 EXPORT_SYMBOL(security_old_inode_init_security
);
1081 #ifdef CONFIG_SECURITY_PATH
1082 int security_path_mknod(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
,
1085 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1087 return call_int_hook(path_mknod
, 0, dir
, dentry
, mode
, dev
);
1089 EXPORT_SYMBOL(security_path_mknod
);
1091 int security_path_mkdir(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
)
1093 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1095 return call_int_hook(path_mkdir
, 0, dir
, dentry
, mode
);
1097 EXPORT_SYMBOL(security_path_mkdir
);
1099 int security_path_rmdir(const struct path
*dir
, struct dentry
*dentry
)
1101 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1103 return call_int_hook(path_rmdir
, 0, dir
, dentry
);
1106 int security_path_unlink(const struct path
*dir
, struct dentry
*dentry
)
1108 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1110 return call_int_hook(path_unlink
, 0, dir
, dentry
);
1112 EXPORT_SYMBOL(security_path_unlink
);
1114 int security_path_symlink(const struct path
*dir
, struct dentry
*dentry
,
1115 const char *old_name
)
1117 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1119 return call_int_hook(path_symlink
, 0, dir
, dentry
, old_name
);
1122 int security_path_link(struct dentry
*old_dentry
, const struct path
*new_dir
,
1123 struct dentry
*new_dentry
)
1125 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1127 return call_int_hook(path_link
, 0, old_dentry
, new_dir
, new_dentry
);
1130 int security_path_rename(const struct path
*old_dir
, struct dentry
*old_dentry
,
1131 const struct path
*new_dir
, struct dentry
*new_dentry
,
1134 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1135 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1138 if (flags
& RENAME_EXCHANGE
) {
1139 int err
= call_int_hook(path_rename
, 0, new_dir
, new_dentry
,
1140 old_dir
, old_dentry
);
1145 return call_int_hook(path_rename
, 0, old_dir
, old_dentry
, new_dir
,
1148 EXPORT_SYMBOL(security_path_rename
);
1150 int security_path_truncate(const struct path
*path
)
1152 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1154 return call_int_hook(path_truncate
, 0, path
);
1157 int security_path_chmod(const struct path
*path
, umode_t mode
)
1159 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1161 return call_int_hook(path_chmod
, 0, path
, mode
);
1164 int security_path_chown(const struct path
*path
, kuid_t uid
, kgid_t gid
)
1166 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1168 return call_int_hook(path_chown
, 0, path
, uid
, gid
);
1171 int security_path_chroot(const struct path
*path
)
1173 return call_int_hook(path_chroot
, 0, path
);
1177 int security_inode_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1179 if (unlikely(IS_PRIVATE(dir
)))
1181 return call_int_hook(inode_create
, 0, dir
, dentry
, mode
);
1183 EXPORT_SYMBOL_GPL(security_inode_create
);
1185 int security_inode_link(struct dentry
*old_dentry
, struct inode
*dir
,
1186 struct dentry
*new_dentry
)
1188 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1190 return call_int_hook(inode_link
, 0, old_dentry
, dir
, new_dentry
);
1193 int security_inode_unlink(struct inode
*dir
, struct dentry
*dentry
)
1195 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1197 return call_int_hook(inode_unlink
, 0, dir
, dentry
);
1200 int security_inode_symlink(struct inode
*dir
, struct dentry
*dentry
,
1201 const char *old_name
)
1203 if (unlikely(IS_PRIVATE(dir
)))
1205 return call_int_hook(inode_symlink
, 0, dir
, dentry
, old_name
);
1208 int security_inode_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1210 if (unlikely(IS_PRIVATE(dir
)))
1212 return call_int_hook(inode_mkdir
, 0, dir
, dentry
, mode
);
1214 EXPORT_SYMBOL_GPL(security_inode_mkdir
);
1216 int security_inode_rmdir(struct inode
*dir
, struct dentry
*dentry
)
1218 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1220 return call_int_hook(inode_rmdir
, 0, dir
, dentry
);
1223 int security_inode_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
, dev_t dev
)
1225 if (unlikely(IS_PRIVATE(dir
)))
1227 return call_int_hook(inode_mknod
, 0, dir
, dentry
, mode
, dev
);
1230 int security_inode_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1231 struct inode
*new_dir
, struct dentry
*new_dentry
,
1234 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1235 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1238 if (flags
& RENAME_EXCHANGE
) {
1239 int err
= call_int_hook(inode_rename
, 0, new_dir
, new_dentry
,
1240 old_dir
, old_dentry
);
1245 return call_int_hook(inode_rename
, 0, old_dir
, old_dentry
,
1246 new_dir
, new_dentry
);
1249 int security_inode_readlink(struct dentry
*dentry
)
1251 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1253 return call_int_hook(inode_readlink
, 0, dentry
);
1256 int security_inode_follow_link(struct dentry
*dentry
, struct inode
*inode
,
1259 if (unlikely(IS_PRIVATE(inode
)))
1261 return call_int_hook(inode_follow_link
, 0, dentry
, inode
, rcu
);
1264 int security_inode_permission(struct inode
*inode
, int mask
)
1266 if (unlikely(IS_PRIVATE(inode
)))
1268 return call_int_hook(inode_permission
, 0, inode
, mask
);
1271 int security_inode_setattr(struct dentry
*dentry
, struct iattr
*attr
)
1275 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1277 ret
= call_int_hook(inode_setattr
, 0, dentry
, attr
);
1280 return evm_inode_setattr(dentry
, attr
);
1282 EXPORT_SYMBOL_GPL(security_inode_setattr
);
1284 int security_inode_getattr(const struct path
*path
)
1286 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1288 return call_int_hook(inode_getattr
, 0, path
);
1291 int security_inode_setxattr(struct user_namespace
*mnt_userns
,
1292 struct dentry
*dentry
, const char *name
,
1293 const void *value
, size_t size
, int flags
)
1297 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1300 * SELinux and Smack integrate the cap call,
1301 * so assume that all LSMs supplying this call do so.
1303 ret
= call_int_hook(inode_setxattr
, 1, mnt_userns
, dentry
, name
, value
,
1307 ret
= cap_inode_setxattr(dentry
, name
, value
, size
, flags
);
1310 ret
= ima_inode_setxattr(dentry
, name
, value
, size
);
1313 return evm_inode_setxattr(dentry
, name
, value
, size
);
1316 void security_inode_post_setxattr(struct dentry
*dentry
, const char *name
,
1317 const void *value
, size_t size
, int flags
)
1319 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1321 call_void_hook(inode_post_setxattr
, dentry
, name
, value
, size
, flags
);
1322 evm_inode_post_setxattr(dentry
, name
, value
, size
);
1325 int security_inode_getxattr(struct dentry
*dentry
, const char *name
)
1327 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1329 return call_int_hook(inode_getxattr
, 0, dentry
, name
);
1332 int security_inode_listxattr(struct dentry
*dentry
)
1334 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1336 return call_int_hook(inode_listxattr
, 0, dentry
);
1339 int security_inode_removexattr(struct user_namespace
*mnt_userns
,
1340 struct dentry
*dentry
, const char *name
)
1344 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1347 * SELinux and Smack integrate the cap call,
1348 * so assume that all LSMs supplying this call do so.
1350 ret
= call_int_hook(inode_removexattr
, 1, mnt_userns
, dentry
, name
);
1352 ret
= cap_inode_removexattr(mnt_userns
, dentry
, name
);
1355 ret
= ima_inode_removexattr(dentry
, name
);
1358 return evm_inode_removexattr(dentry
, name
);
1361 int security_inode_need_killpriv(struct dentry
*dentry
)
1363 return call_int_hook(inode_need_killpriv
, 0, dentry
);
1366 int security_inode_killpriv(struct user_namespace
*mnt_userns
,
1367 struct dentry
*dentry
)
1369 return call_int_hook(inode_killpriv
, 0, mnt_userns
, dentry
);
1372 int security_inode_getsecurity(struct user_namespace
*mnt_userns
,
1373 struct inode
*inode
, const char *name
,
1374 void **buffer
, bool alloc
)
1376 struct security_hook_list
*hp
;
1379 if (unlikely(IS_PRIVATE(inode
)))
1380 return LSM_RET_DEFAULT(inode_getsecurity
);
1382 * Only one module will provide an attribute with a given name.
1384 hlist_for_each_entry(hp
, &security_hook_heads
.inode_getsecurity
, list
) {
1385 rc
= hp
->hook
.inode_getsecurity(mnt_userns
, inode
, name
, buffer
, alloc
);
1386 if (rc
!= LSM_RET_DEFAULT(inode_getsecurity
))
1389 return LSM_RET_DEFAULT(inode_getsecurity
);
1392 int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
)
1394 struct security_hook_list
*hp
;
1397 if (unlikely(IS_PRIVATE(inode
)))
1398 return LSM_RET_DEFAULT(inode_setsecurity
);
1400 * Only one module will provide an attribute with a given name.
1402 hlist_for_each_entry(hp
, &security_hook_heads
.inode_setsecurity
, list
) {
1403 rc
= hp
->hook
.inode_setsecurity(inode
, name
, value
, size
,
1405 if (rc
!= LSM_RET_DEFAULT(inode_setsecurity
))
1408 return LSM_RET_DEFAULT(inode_setsecurity
);
1411 int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
)
1413 if (unlikely(IS_PRIVATE(inode
)))
1415 return call_int_hook(inode_listsecurity
, 0, inode
, buffer
, buffer_size
);
1417 EXPORT_SYMBOL(security_inode_listsecurity
);
1419 void security_inode_getsecid(struct inode
*inode
, u32
*secid
)
1421 call_void_hook(inode_getsecid
, inode
, secid
);
1424 int security_inode_copy_up(struct dentry
*src
, struct cred
**new)
1426 return call_int_hook(inode_copy_up
, 0, src
, new);
1428 EXPORT_SYMBOL(security_inode_copy_up
);
1430 int security_inode_copy_up_xattr(const char *name
)
1432 struct security_hook_list
*hp
;
1436 * The implementation can return 0 (accept the xattr), 1 (discard the
1437 * xattr), -EOPNOTSUPP if it does not know anything about the xattr or
1438 * any other error code incase of an error.
1440 hlist_for_each_entry(hp
,
1441 &security_hook_heads
.inode_copy_up_xattr
, list
) {
1442 rc
= hp
->hook
.inode_copy_up_xattr(name
);
1443 if (rc
!= LSM_RET_DEFAULT(inode_copy_up_xattr
))
1447 return LSM_RET_DEFAULT(inode_copy_up_xattr
);
1449 EXPORT_SYMBOL(security_inode_copy_up_xattr
);
1451 int security_kernfs_init_security(struct kernfs_node
*kn_dir
,
1452 struct kernfs_node
*kn
)
1454 return call_int_hook(kernfs_init_security
, 0, kn_dir
, kn
);
1457 int security_file_permission(struct file
*file
, int mask
)
1461 ret
= call_int_hook(file_permission
, 0, file
, mask
);
1465 return fsnotify_perm(file
, mask
);
1468 int security_file_alloc(struct file
*file
)
1470 int rc
= lsm_file_alloc(file
);
1474 rc
= call_int_hook(file_alloc_security
, 0, file
);
1476 security_file_free(file
);
1480 void security_file_free(struct file
*file
)
1484 call_void_hook(file_free_security
, file
);
1486 blob
= file
->f_security
;
1488 file
->f_security
= NULL
;
1489 kmem_cache_free(lsm_file_cache
, blob
);
1493 int security_file_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1495 return call_int_hook(file_ioctl
, 0, file
, cmd
, arg
);
1497 EXPORT_SYMBOL_GPL(security_file_ioctl
);
1499 static inline unsigned long mmap_prot(struct file
*file
, unsigned long prot
)
1502 * Does we have PROT_READ and does the application expect
1503 * it to imply PROT_EXEC? If not, nothing to talk about...
1505 if ((prot
& (PROT_READ
| PROT_EXEC
)) != PROT_READ
)
1507 if (!(current
->personality
& READ_IMPLIES_EXEC
))
1510 * if that's an anonymous mapping, let it.
1513 return prot
| PROT_EXEC
;
1515 * ditto if it's not on noexec mount, except that on !MMU we need
1516 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1518 if (!path_noexec(&file
->f_path
)) {
1520 if (file
->f_op
->mmap_capabilities
) {
1521 unsigned caps
= file
->f_op
->mmap_capabilities(file
);
1522 if (!(caps
& NOMMU_MAP_EXEC
))
1526 return prot
| PROT_EXEC
;
1528 /* anything on noexec mount won't get PROT_EXEC */
1532 int security_mmap_file(struct file
*file
, unsigned long prot
,
1533 unsigned long flags
)
1536 ret
= call_int_hook(mmap_file
, 0, file
, prot
,
1537 mmap_prot(file
, prot
), flags
);
1540 return ima_file_mmap(file
, prot
);
1543 int security_mmap_addr(unsigned long addr
)
1545 return call_int_hook(mmap_addr
, 0, addr
);
1548 int security_file_mprotect(struct vm_area_struct
*vma
, unsigned long reqprot
,
1553 ret
= call_int_hook(file_mprotect
, 0, vma
, reqprot
, prot
);
1556 return ima_file_mprotect(vma
, prot
);
1559 int security_file_lock(struct file
*file
, unsigned int cmd
)
1561 return call_int_hook(file_lock
, 0, file
, cmd
);
1564 int security_file_fcntl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1566 return call_int_hook(file_fcntl
, 0, file
, cmd
, arg
);
1569 void security_file_set_fowner(struct file
*file
)
1571 call_void_hook(file_set_fowner
, file
);
1574 int security_file_send_sigiotask(struct task_struct
*tsk
,
1575 struct fown_struct
*fown
, int sig
)
1577 return call_int_hook(file_send_sigiotask
, 0, tsk
, fown
, sig
);
1580 int security_file_receive(struct file
*file
)
1582 return call_int_hook(file_receive
, 0, file
);
1585 int security_file_open(struct file
*file
)
1589 ret
= call_int_hook(file_open
, 0, file
);
1593 return fsnotify_perm(file
, MAY_OPEN
);
1596 int security_task_alloc(struct task_struct
*task
, unsigned long clone_flags
)
1598 int rc
= lsm_task_alloc(task
);
1602 rc
= call_int_hook(task_alloc
, 0, task
, clone_flags
);
1604 security_task_free(task
);
1608 void security_task_free(struct task_struct
*task
)
1610 call_void_hook(task_free
, task
);
1612 kfree(task
->security
);
1613 task
->security
= NULL
;
1616 int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
)
1618 int rc
= lsm_cred_alloc(cred
, gfp
);
1623 rc
= call_int_hook(cred_alloc_blank
, 0, cred
, gfp
);
1625 security_cred_free(cred
);
1629 void security_cred_free(struct cred
*cred
)
1632 * There is a failure case in prepare_creds() that
1633 * may result in a call here with ->security being NULL.
1635 if (unlikely(cred
->security
== NULL
))
1638 call_void_hook(cred_free
, cred
);
1640 kfree(cred
->security
);
1641 cred
->security
= NULL
;
1644 int security_prepare_creds(struct cred
*new, const struct cred
*old
, gfp_t gfp
)
1646 int rc
= lsm_cred_alloc(new, gfp
);
1651 rc
= call_int_hook(cred_prepare
, 0, new, old
, gfp
);
1653 security_cred_free(new);
1657 void security_transfer_creds(struct cred
*new, const struct cred
*old
)
1659 call_void_hook(cred_transfer
, new, old
);
1662 void security_cred_getsecid(const struct cred
*c
, u32
*secid
)
1665 call_void_hook(cred_getsecid
, c
, secid
);
1667 EXPORT_SYMBOL(security_cred_getsecid
);
1669 int security_kernel_act_as(struct cred
*new, u32 secid
)
1671 return call_int_hook(kernel_act_as
, 0, new, secid
);
1674 int security_kernel_create_files_as(struct cred
*new, struct inode
*inode
)
1676 return call_int_hook(kernel_create_files_as
, 0, new, inode
);
1679 int security_kernel_module_request(char *kmod_name
)
1683 ret
= call_int_hook(kernel_module_request
, 0, kmod_name
);
1686 return integrity_kernel_module_request(kmod_name
);
1689 int security_kernel_read_file(struct file
*file
, enum kernel_read_file_id id
,
1694 ret
= call_int_hook(kernel_read_file
, 0, file
, id
, contents
);
1697 return ima_read_file(file
, id
, contents
);
1699 EXPORT_SYMBOL_GPL(security_kernel_read_file
);
1701 int security_kernel_post_read_file(struct file
*file
, char *buf
, loff_t size
,
1702 enum kernel_read_file_id id
)
1706 ret
= call_int_hook(kernel_post_read_file
, 0, file
, buf
, size
, id
);
1709 return ima_post_read_file(file
, buf
, size
, id
);
1711 EXPORT_SYMBOL_GPL(security_kernel_post_read_file
);
1713 int security_kernel_load_data(enum kernel_load_data_id id
, bool contents
)
1717 ret
= call_int_hook(kernel_load_data
, 0, id
, contents
);
1720 return ima_load_data(id
, contents
);
1722 EXPORT_SYMBOL_GPL(security_kernel_load_data
);
1724 int security_kernel_post_load_data(char *buf
, loff_t size
,
1725 enum kernel_load_data_id id
,
1730 ret
= call_int_hook(kernel_post_load_data
, 0, buf
, size
, id
,
1734 return ima_post_load_data(buf
, size
, id
, description
);
1736 EXPORT_SYMBOL_GPL(security_kernel_post_load_data
);
1738 int security_task_fix_setuid(struct cred
*new, const struct cred
*old
,
1741 return call_int_hook(task_fix_setuid
, 0, new, old
, flags
);
1744 int security_task_fix_setgid(struct cred
*new, const struct cred
*old
,
1747 return call_int_hook(task_fix_setgid
, 0, new, old
, flags
);
1750 int security_task_setpgid(struct task_struct
*p
, pid_t pgid
)
1752 return call_int_hook(task_setpgid
, 0, p
, pgid
);
1755 int security_task_getpgid(struct task_struct
*p
)
1757 return call_int_hook(task_getpgid
, 0, p
);
1760 int security_task_getsid(struct task_struct
*p
)
1762 return call_int_hook(task_getsid
, 0, p
);
1765 void security_task_getsecid(struct task_struct
*p
, u32
*secid
)
1768 call_void_hook(task_getsecid
, p
, secid
);
1770 EXPORT_SYMBOL(security_task_getsecid
);
1772 int security_task_setnice(struct task_struct
*p
, int nice
)
1774 return call_int_hook(task_setnice
, 0, p
, nice
);
1777 int security_task_setioprio(struct task_struct
*p
, int ioprio
)
1779 return call_int_hook(task_setioprio
, 0, p
, ioprio
);
1782 int security_task_getioprio(struct task_struct
*p
)
1784 return call_int_hook(task_getioprio
, 0, p
);
1787 int security_task_prlimit(const struct cred
*cred
, const struct cred
*tcred
,
1790 return call_int_hook(task_prlimit
, 0, cred
, tcred
, flags
);
1793 int security_task_setrlimit(struct task_struct
*p
, unsigned int resource
,
1794 struct rlimit
*new_rlim
)
1796 return call_int_hook(task_setrlimit
, 0, p
, resource
, new_rlim
);
1799 int security_task_setscheduler(struct task_struct
*p
)
1801 return call_int_hook(task_setscheduler
, 0, p
);
1804 int security_task_getscheduler(struct task_struct
*p
)
1806 return call_int_hook(task_getscheduler
, 0, p
);
1809 int security_task_movememory(struct task_struct
*p
)
1811 return call_int_hook(task_movememory
, 0, p
);
1814 int security_task_kill(struct task_struct
*p
, struct kernel_siginfo
*info
,
1815 int sig
, const struct cred
*cred
)
1817 return call_int_hook(task_kill
, 0, p
, info
, sig
, cred
);
1820 int security_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1821 unsigned long arg4
, unsigned long arg5
)
1824 int rc
= LSM_RET_DEFAULT(task_prctl
);
1825 struct security_hook_list
*hp
;
1827 hlist_for_each_entry(hp
, &security_hook_heads
.task_prctl
, list
) {
1828 thisrc
= hp
->hook
.task_prctl(option
, arg2
, arg3
, arg4
, arg5
);
1829 if (thisrc
!= LSM_RET_DEFAULT(task_prctl
)) {
1838 void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
)
1840 call_void_hook(task_to_inode
, p
, inode
);
1843 int security_ipc_permission(struct kern_ipc_perm
*ipcp
, short flag
)
1845 return call_int_hook(ipc_permission
, 0, ipcp
, flag
);
1848 void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
)
1851 call_void_hook(ipc_getsecid
, ipcp
, secid
);
1854 int security_msg_msg_alloc(struct msg_msg
*msg
)
1856 int rc
= lsm_msg_msg_alloc(msg
);
1860 rc
= call_int_hook(msg_msg_alloc_security
, 0, msg
);
1862 security_msg_msg_free(msg
);
1866 void security_msg_msg_free(struct msg_msg
*msg
)
1868 call_void_hook(msg_msg_free_security
, msg
);
1869 kfree(msg
->security
);
1870 msg
->security
= NULL
;
1873 int security_msg_queue_alloc(struct kern_ipc_perm
*msq
)
1875 int rc
= lsm_ipc_alloc(msq
);
1879 rc
= call_int_hook(msg_queue_alloc_security
, 0, msq
);
1881 security_msg_queue_free(msq
);
1885 void security_msg_queue_free(struct kern_ipc_perm
*msq
)
1887 call_void_hook(msg_queue_free_security
, msq
);
1888 kfree(msq
->security
);
1889 msq
->security
= NULL
;
1892 int security_msg_queue_associate(struct kern_ipc_perm
*msq
, int msqflg
)
1894 return call_int_hook(msg_queue_associate
, 0, msq
, msqflg
);
1897 int security_msg_queue_msgctl(struct kern_ipc_perm
*msq
, int cmd
)
1899 return call_int_hook(msg_queue_msgctl
, 0, msq
, cmd
);
1902 int security_msg_queue_msgsnd(struct kern_ipc_perm
*msq
,
1903 struct msg_msg
*msg
, int msqflg
)
1905 return call_int_hook(msg_queue_msgsnd
, 0, msq
, msg
, msqflg
);
1908 int security_msg_queue_msgrcv(struct kern_ipc_perm
*msq
, struct msg_msg
*msg
,
1909 struct task_struct
*target
, long type
, int mode
)
1911 return call_int_hook(msg_queue_msgrcv
, 0, msq
, msg
, target
, type
, mode
);
1914 int security_shm_alloc(struct kern_ipc_perm
*shp
)
1916 int rc
= lsm_ipc_alloc(shp
);
1920 rc
= call_int_hook(shm_alloc_security
, 0, shp
);
1922 security_shm_free(shp
);
1926 void security_shm_free(struct kern_ipc_perm
*shp
)
1928 call_void_hook(shm_free_security
, shp
);
1929 kfree(shp
->security
);
1930 shp
->security
= NULL
;
1933 int security_shm_associate(struct kern_ipc_perm
*shp
, int shmflg
)
1935 return call_int_hook(shm_associate
, 0, shp
, shmflg
);
1938 int security_shm_shmctl(struct kern_ipc_perm
*shp
, int cmd
)
1940 return call_int_hook(shm_shmctl
, 0, shp
, cmd
);
1943 int security_shm_shmat(struct kern_ipc_perm
*shp
, char __user
*shmaddr
, int shmflg
)
1945 return call_int_hook(shm_shmat
, 0, shp
, shmaddr
, shmflg
);
1948 int security_sem_alloc(struct kern_ipc_perm
*sma
)
1950 int rc
= lsm_ipc_alloc(sma
);
1954 rc
= call_int_hook(sem_alloc_security
, 0, sma
);
1956 security_sem_free(sma
);
1960 void security_sem_free(struct kern_ipc_perm
*sma
)
1962 call_void_hook(sem_free_security
, sma
);
1963 kfree(sma
->security
);
1964 sma
->security
= NULL
;
1967 int security_sem_associate(struct kern_ipc_perm
*sma
, int semflg
)
1969 return call_int_hook(sem_associate
, 0, sma
, semflg
);
1972 int security_sem_semctl(struct kern_ipc_perm
*sma
, int cmd
)
1974 return call_int_hook(sem_semctl
, 0, sma
, cmd
);
1977 int security_sem_semop(struct kern_ipc_perm
*sma
, struct sembuf
*sops
,
1978 unsigned nsops
, int alter
)
1980 return call_int_hook(sem_semop
, 0, sma
, sops
, nsops
, alter
);
1983 void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
)
1985 if (unlikely(inode
&& IS_PRIVATE(inode
)))
1987 call_void_hook(d_instantiate
, dentry
, inode
);
1989 EXPORT_SYMBOL(security_d_instantiate
);
1991 int security_getprocattr(struct task_struct
*p
, const char *lsm
, char *name
,
1994 struct security_hook_list
*hp
;
1996 hlist_for_each_entry(hp
, &security_hook_heads
.getprocattr
, list
) {
1997 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
1999 return hp
->hook
.getprocattr(p
, name
, value
);
2001 return LSM_RET_DEFAULT(getprocattr
);
2004 int security_setprocattr(const char *lsm
, const char *name
, void *value
,
2007 struct security_hook_list
*hp
;
2009 hlist_for_each_entry(hp
, &security_hook_heads
.setprocattr
, list
) {
2010 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
2012 return hp
->hook
.setprocattr(name
, value
, size
);
2014 return LSM_RET_DEFAULT(setprocattr
);
2017 int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
)
2019 return call_int_hook(netlink_send
, 0, sk
, skb
);
2022 int security_ismaclabel(const char *name
)
2024 return call_int_hook(ismaclabel
, 0, name
);
2026 EXPORT_SYMBOL(security_ismaclabel
);
2028 int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
)
2030 struct security_hook_list
*hp
;
2034 * Currently, only one LSM can implement secid_to_secctx (i.e this
2035 * LSM hook is not "stackable").
2037 hlist_for_each_entry(hp
, &security_hook_heads
.secid_to_secctx
, list
) {
2038 rc
= hp
->hook
.secid_to_secctx(secid
, secdata
, seclen
);
2039 if (rc
!= LSM_RET_DEFAULT(secid_to_secctx
))
2043 return LSM_RET_DEFAULT(secid_to_secctx
);
2045 EXPORT_SYMBOL(security_secid_to_secctx
);
2047 int security_secctx_to_secid(const char *secdata
, u32 seclen
, u32
*secid
)
2050 return call_int_hook(secctx_to_secid
, 0, secdata
, seclen
, secid
);
2052 EXPORT_SYMBOL(security_secctx_to_secid
);
2054 void security_release_secctx(char *secdata
, u32 seclen
)
2056 call_void_hook(release_secctx
, secdata
, seclen
);
2058 EXPORT_SYMBOL(security_release_secctx
);
2060 void security_inode_invalidate_secctx(struct inode
*inode
)
2062 call_void_hook(inode_invalidate_secctx
, inode
);
2064 EXPORT_SYMBOL(security_inode_invalidate_secctx
);
2066 int security_inode_notifysecctx(struct inode
*inode
, void *ctx
, u32 ctxlen
)
2068 return call_int_hook(inode_notifysecctx
, 0, inode
, ctx
, ctxlen
);
2070 EXPORT_SYMBOL(security_inode_notifysecctx
);
2072 int security_inode_setsecctx(struct dentry
*dentry
, void *ctx
, u32 ctxlen
)
2074 return call_int_hook(inode_setsecctx
, 0, dentry
, ctx
, ctxlen
);
2076 EXPORT_SYMBOL(security_inode_setsecctx
);
2078 int security_inode_getsecctx(struct inode
*inode
, void **ctx
, u32
*ctxlen
)
2080 return call_int_hook(inode_getsecctx
, -EOPNOTSUPP
, inode
, ctx
, ctxlen
);
2082 EXPORT_SYMBOL(security_inode_getsecctx
);
2084 #ifdef CONFIG_WATCH_QUEUE
2085 int security_post_notification(const struct cred
*w_cred
,
2086 const struct cred
*cred
,
2087 struct watch_notification
*n
)
2089 return call_int_hook(post_notification
, 0, w_cred
, cred
, n
);
2091 #endif /* CONFIG_WATCH_QUEUE */
2093 #ifdef CONFIG_KEY_NOTIFICATIONS
2094 int security_watch_key(struct key
*key
)
2096 return call_int_hook(watch_key
, 0, key
);
2100 #ifdef CONFIG_SECURITY_NETWORK
2102 int security_unix_stream_connect(struct sock
*sock
, struct sock
*other
, struct sock
*newsk
)
2104 return call_int_hook(unix_stream_connect
, 0, sock
, other
, newsk
);
2106 EXPORT_SYMBOL(security_unix_stream_connect
);
2108 int security_unix_may_send(struct socket
*sock
, struct socket
*other
)
2110 return call_int_hook(unix_may_send
, 0, sock
, other
);
2112 EXPORT_SYMBOL(security_unix_may_send
);
2114 int security_socket_create(int family
, int type
, int protocol
, int kern
)
2116 return call_int_hook(socket_create
, 0, family
, type
, protocol
, kern
);
2119 int security_socket_post_create(struct socket
*sock
, int family
,
2120 int type
, int protocol
, int kern
)
2122 return call_int_hook(socket_post_create
, 0, sock
, family
, type
,
2126 int security_socket_socketpair(struct socket
*socka
, struct socket
*sockb
)
2128 return call_int_hook(socket_socketpair
, 0, socka
, sockb
);
2130 EXPORT_SYMBOL(security_socket_socketpair
);
2132 int security_socket_bind(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2134 return call_int_hook(socket_bind
, 0, sock
, address
, addrlen
);
2137 int security_socket_connect(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2139 return call_int_hook(socket_connect
, 0, sock
, address
, addrlen
);
2142 int security_socket_listen(struct socket
*sock
, int backlog
)
2144 return call_int_hook(socket_listen
, 0, sock
, backlog
);
2147 int security_socket_accept(struct socket
*sock
, struct socket
*newsock
)
2149 return call_int_hook(socket_accept
, 0, sock
, newsock
);
2152 int security_socket_sendmsg(struct socket
*sock
, struct msghdr
*msg
, int size
)
2154 return call_int_hook(socket_sendmsg
, 0, sock
, msg
, size
);
2157 int security_socket_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
2158 int size
, int flags
)
2160 return call_int_hook(socket_recvmsg
, 0, sock
, msg
, size
, flags
);
2163 int security_socket_getsockname(struct socket
*sock
)
2165 return call_int_hook(socket_getsockname
, 0, sock
);
2168 int security_socket_getpeername(struct socket
*sock
)
2170 return call_int_hook(socket_getpeername
, 0, sock
);
2173 int security_socket_getsockopt(struct socket
*sock
, int level
, int optname
)
2175 return call_int_hook(socket_getsockopt
, 0, sock
, level
, optname
);
2178 int security_socket_setsockopt(struct socket
*sock
, int level
, int optname
)
2180 return call_int_hook(socket_setsockopt
, 0, sock
, level
, optname
);
2183 int security_socket_shutdown(struct socket
*sock
, int how
)
2185 return call_int_hook(socket_shutdown
, 0, sock
, how
);
2188 int security_sock_rcv_skb(struct sock
*sk
, struct sk_buff
*skb
)
2190 return call_int_hook(socket_sock_rcv_skb
, 0, sk
, skb
);
2192 EXPORT_SYMBOL(security_sock_rcv_skb
);
2194 int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2195 int __user
*optlen
, unsigned len
)
2197 return call_int_hook(socket_getpeersec_stream
, -ENOPROTOOPT
, sock
,
2198 optval
, optlen
, len
);
2201 int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
)
2203 return call_int_hook(socket_getpeersec_dgram
, -ENOPROTOOPT
, sock
,
2206 EXPORT_SYMBOL(security_socket_getpeersec_dgram
);
2208 int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
)
2210 return call_int_hook(sk_alloc_security
, 0, sk
, family
, priority
);
2213 void security_sk_free(struct sock
*sk
)
2215 call_void_hook(sk_free_security
, sk
);
2218 void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
)
2220 call_void_hook(sk_clone_security
, sk
, newsk
);
2222 EXPORT_SYMBOL(security_sk_clone
);
2224 void security_sk_classify_flow(struct sock
*sk
, struct flowi_common
*flic
)
2226 call_void_hook(sk_getsecid
, sk
, &flic
->flowic_secid
);
2228 EXPORT_SYMBOL(security_sk_classify_flow
);
2230 void security_req_classify_flow(const struct request_sock
*req
,
2231 struct flowi_common
*flic
)
2233 call_void_hook(req_classify_flow
, req
, flic
);
2235 EXPORT_SYMBOL(security_req_classify_flow
);
2237 void security_sock_graft(struct sock
*sk
, struct socket
*parent
)
2239 call_void_hook(sock_graft
, sk
, parent
);
2241 EXPORT_SYMBOL(security_sock_graft
);
2243 int security_inet_conn_request(const struct sock
*sk
,
2244 struct sk_buff
*skb
, struct request_sock
*req
)
2246 return call_int_hook(inet_conn_request
, 0, sk
, skb
, req
);
2248 EXPORT_SYMBOL(security_inet_conn_request
);
2250 void security_inet_csk_clone(struct sock
*newsk
,
2251 const struct request_sock
*req
)
2253 call_void_hook(inet_csk_clone
, newsk
, req
);
2256 void security_inet_conn_established(struct sock
*sk
,
2257 struct sk_buff
*skb
)
2259 call_void_hook(inet_conn_established
, sk
, skb
);
2261 EXPORT_SYMBOL(security_inet_conn_established
);
2263 int security_secmark_relabel_packet(u32 secid
)
2265 return call_int_hook(secmark_relabel_packet
, 0, secid
);
2267 EXPORT_SYMBOL(security_secmark_relabel_packet
);
2269 void security_secmark_refcount_inc(void)
2271 call_void_hook(secmark_refcount_inc
);
2273 EXPORT_SYMBOL(security_secmark_refcount_inc
);
2275 void security_secmark_refcount_dec(void)
2277 call_void_hook(secmark_refcount_dec
);
2279 EXPORT_SYMBOL(security_secmark_refcount_dec
);
2281 int security_tun_dev_alloc_security(void **security
)
2283 return call_int_hook(tun_dev_alloc_security
, 0, security
);
2285 EXPORT_SYMBOL(security_tun_dev_alloc_security
);
2287 void security_tun_dev_free_security(void *security
)
2289 call_void_hook(tun_dev_free_security
, security
);
2291 EXPORT_SYMBOL(security_tun_dev_free_security
);
2293 int security_tun_dev_create(void)
2295 return call_int_hook(tun_dev_create
, 0);
2297 EXPORT_SYMBOL(security_tun_dev_create
);
2299 int security_tun_dev_attach_queue(void *security
)
2301 return call_int_hook(tun_dev_attach_queue
, 0, security
);
2303 EXPORT_SYMBOL(security_tun_dev_attach_queue
);
2305 int security_tun_dev_attach(struct sock
*sk
, void *security
)
2307 return call_int_hook(tun_dev_attach
, 0, sk
, security
);
2309 EXPORT_SYMBOL(security_tun_dev_attach
);
2311 int security_tun_dev_open(void *security
)
2313 return call_int_hook(tun_dev_open
, 0, security
);
2315 EXPORT_SYMBOL(security_tun_dev_open
);
2317 int security_sctp_assoc_request(struct sctp_endpoint
*ep
, struct sk_buff
*skb
)
2319 return call_int_hook(sctp_assoc_request
, 0, ep
, skb
);
2321 EXPORT_SYMBOL(security_sctp_assoc_request
);
2323 int security_sctp_bind_connect(struct sock
*sk
, int optname
,
2324 struct sockaddr
*address
, int addrlen
)
2326 return call_int_hook(sctp_bind_connect
, 0, sk
, optname
,
2329 EXPORT_SYMBOL(security_sctp_bind_connect
);
2331 void security_sctp_sk_clone(struct sctp_endpoint
*ep
, struct sock
*sk
,
2334 call_void_hook(sctp_sk_clone
, ep
, sk
, newsk
);
2336 EXPORT_SYMBOL(security_sctp_sk_clone
);
2338 #endif /* CONFIG_SECURITY_NETWORK */
2340 #ifdef CONFIG_SECURITY_INFINIBAND
2342 int security_ib_pkey_access(void *sec
, u64 subnet_prefix
, u16 pkey
)
2344 return call_int_hook(ib_pkey_access
, 0, sec
, subnet_prefix
, pkey
);
2346 EXPORT_SYMBOL(security_ib_pkey_access
);
2348 int security_ib_endport_manage_subnet(void *sec
, const char *dev_name
, u8 port_num
)
2350 return call_int_hook(ib_endport_manage_subnet
, 0, sec
, dev_name
, port_num
);
2352 EXPORT_SYMBOL(security_ib_endport_manage_subnet
);
2354 int security_ib_alloc_security(void **sec
)
2356 return call_int_hook(ib_alloc_security
, 0, sec
);
2358 EXPORT_SYMBOL(security_ib_alloc_security
);
2360 void security_ib_free_security(void *sec
)
2362 call_void_hook(ib_free_security
, sec
);
2364 EXPORT_SYMBOL(security_ib_free_security
);
2365 #endif /* CONFIG_SECURITY_INFINIBAND */
2367 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2369 int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
,
2370 struct xfrm_user_sec_ctx
*sec_ctx
,
2373 return call_int_hook(xfrm_policy_alloc_security
, 0, ctxp
, sec_ctx
, gfp
);
2375 EXPORT_SYMBOL(security_xfrm_policy_alloc
);
2377 int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old_ctx
,
2378 struct xfrm_sec_ctx
**new_ctxp
)
2380 return call_int_hook(xfrm_policy_clone_security
, 0, old_ctx
, new_ctxp
);
2383 void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
)
2385 call_void_hook(xfrm_policy_free_security
, ctx
);
2387 EXPORT_SYMBOL(security_xfrm_policy_free
);
2389 int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
)
2391 return call_int_hook(xfrm_policy_delete_security
, 0, ctx
);
2394 int security_xfrm_state_alloc(struct xfrm_state
*x
,
2395 struct xfrm_user_sec_ctx
*sec_ctx
)
2397 return call_int_hook(xfrm_state_alloc
, 0, x
, sec_ctx
);
2399 EXPORT_SYMBOL(security_xfrm_state_alloc
);
2401 int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2402 struct xfrm_sec_ctx
*polsec
, u32 secid
)
2404 return call_int_hook(xfrm_state_alloc_acquire
, 0, x
, polsec
, secid
);
2407 int security_xfrm_state_delete(struct xfrm_state
*x
)
2409 return call_int_hook(xfrm_state_delete_security
, 0, x
);
2411 EXPORT_SYMBOL(security_xfrm_state_delete
);
2413 void security_xfrm_state_free(struct xfrm_state
*x
)
2415 call_void_hook(xfrm_state_free_security
, x
);
2418 int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
)
2420 return call_int_hook(xfrm_policy_lookup
, 0, ctx
, fl_secid
, dir
);
2423 int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2424 struct xfrm_policy
*xp
,
2425 const struct flowi_common
*flic
)
2427 struct security_hook_list
*hp
;
2428 int rc
= LSM_RET_DEFAULT(xfrm_state_pol_flow_match
);
2431 * Since this function is expected to return 0 or 1, the judgment
2432 * becomes difficult if multiple LSMs supply this call. Fortunately,
2433 * we can use the first LSM's judgment because currently only SELinux
2434 * supplies this call.
2436 * For speed optimization, we explicitly break the loop rather than
2439 hlist_for_each_entry(hp
, &security_hook_heads
.xfrm_state_pol_flow_match
,
2441 rc
= hp
->hook
.xfrm_state_pol_flow_match(x
, xp
, flic
);
2447 int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
)
2449 return call_int_hook(xfrm_decode_session
, 0, skb
, secid
, 1);
2452 void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi_common
*flic
)
2454 int rc
= call_int_hook(xfrm_decode_session
, 0, skb
, &flic
->flowic_secid
,
2459 EXPORT_SYMBOL(security_skb_classify_flow
);
2461 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2465 int security_key_alloc(struct key
*key
, const struct cred
*cred
,
2466 unsigned long flags
)
2468 return call_int_hook(key_alloc
, 0, key
, cred
, flags
);
2471 void security_key_free(struct key
*key
)
2473 call_void_hook(key_free
, key
);
2476 int security_key_permission(key_ref_t key_ref
, const struct cred
*cred
,
2477 enum key_need_perm need_perm
)
2479 return call_int_hook(key_permission
, 0, key_ref
, cred
, need_perm
);
2482 int security_key_getsecurity(struct key
*key
, char **_buffer
)
2485 return call_int_hook(key_getsecurity
, 0, key
, _buffer
);
2488 #endif /* CONFIG_KEYS */
2492 int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
, void **lsmrule
)
2494 return call_int_hook(audit_rule_init
, 0, field
, op
, rulestr
, lsmrule
);
2497 int security_audit_rule_known(struct audit_krule
*krule
)
2499 return call_int_hook(audit_rule_known
, 0, krule
);
2502 void security_audit_rule_free(void *lsmrule
)
2504 call_void_hook(audit_rule_free
, lsmrule
);
2507 int security_audit_rule_match(u32 secid
, u32 field
, u32 op
, void *lsmrule
)
2509 return call_int_hook(audit_rule_match
, 0, secid
, field
, op
, lsmrule
);
2511 #endif /* CONFIG_AUDIT */
2513 #ifdef CONFIG_BPF_SYSCALL
2514 int security_bpf(int cmd
, union bpf_attr
*attr
, unsigned int size
)
2516 return call_int_hook(bpf
, 0, cmd
, attr
, size
);
2518 int security_bpf_map(struct bpf_map
*map
, fmode_t fmode
)
2520 return call_int_hook(bpf_map
, 0, map
, fmode
);
2522 int security_bpf_prog(struct bpf_prog
*prog
)
2524 return call_int_hook(bpf_prog
, 0, prog
);
2526 int security_bpf_map_alloc(struct bpf_map
*map
)
2528 return call_int_hook(bpf_map_alloc_security
, 0, map
);
2530 int security_bpf_prog_alloc(struct bpf_prog_aux
*aux
)
2532 return call_int_hook(bpf_prog_alloc_security
, 0, aux
);
2534 void security_bpf_map_free(struct bpf_map
*map
)
2536 call_void_hook(bpf_map_free_security
, map
);
2538 void security_bpf_prog_free(struct bpf_prog_aux
*aux
)
2540 call_void_hook(bpf_prog_free_security
, aux
);
2542 #endif /* CONFIG_BPF_SYSCALL */
2544 int security_locked_down(enum lockdown_reason what
)
2546 return call_int_hook(locked_down
, 0, what
);
2548 EXPORT_SYMBOL(security_locked_down
);
2550 #ifdef CONFIG_PERF_EVENTS
2551 int security_perf_event_open(struct perf_event_attr
*attr
, int type
)
2553 return call_int_hook(perf_event_open
, 0, attr
, type
);
2556 int security_perf_event_alloc(struct perf_event
*event
)
2558 return call_int_hook(perf_event_alloc
, 0, event
);
2561 void security_perf_event_free(struct perf_event
*event
)
2563 call_void_hook(perf_event_free
, event
);
2566 int security_perf_event_read(struct perf_event
*event
)
2568 return call_int_hook(perf_event_read
, 0, event
);
2571 int security_perf_event_write(struct perf_event
*event
)
2573 return call_int_hook(perf_event_write
, 0, event
);
2575 #endif /* CONFIG_PERF_EVENTS */