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_superblock
, &blob_sizes
.lbs_superblock
);
207 lsm_set_blob_size(&needed
->lbs_task
, &blob_sizes
.lbs_task
);
210 /* Prepare LSM for initialization. */
211 static void __init
prepare_lsm(struct lsm_info
*lsm
)
213 int enabled
= lsm_allowed(lsm
);
215 /* Record enablement (to handle any following exclusive LSMs). */
216 set_enabled(lsm
, enabled
);
218 /* If enabled, do pre-initialization work. */
220 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && !exclusive
) {
222 init_debug("exclusive chosen: %s\n", lsm
->name
);
225 lsm_set_blob_sizes(lsm
->blobs
);
229 /* Initialize a given LSM, if it is enabled. */
230 static void __init
initialize_lsm(struct lsm_info
*lsm
)
232 if (is_enabled(lsm
)) {
235 init_debug("initializing %s\n", lsm
->name
);
237 WARN(ret
, "%s failed to initialize: %d\n", lsm
->name
, ret
);
241 /* Populate ordered LSMs list from comma-separated LSM name list. */
242 static void __init
ordered_lsm_parse(const char *order
, const char *origin
)
244 struct lsm_info
*lsm
;
245 char *sep
, *name
, *next
;
247 /* LSM_ORDER_FIRST is always first. */
248 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
249 if (lsm
->order
== LSM_ORDER_FIRST
)
250 append_ordered_lsm(lsm
, "first");
253 /* Process "security=", if given. */
254 if (chosen_major_lsm
) {
255 struct lsm_info
*major
;
258 * To match the original "security=" behavior, this
259 * explicitly does NOT fallback to another Legacy Major
260 * if the selected one was separately disabled: disable
261 * all non-matching Legacy Major LSMs.
263 for (major
= __start_lsm_info
; major
< __end_lsm_info
;
265 if ((major
->flags
& LSM_FLAG_LEGACY_MAJOR
) &&
266 strcmp(major
->name
, chosen_major_lsm
) != 0) {
267 set_enabled(major
, false);
268 init_debug("security=%s disabled: %s\n",
269 chosen_major_lsm
, major
->name
);
274 sep
= kstrdup(order
, GFP_KERNEL
);
276 /* Walk the list, looking for matching LSMs. */
277 while ((name
= strsep(&next
, ",")) != NULL
) {
280 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
281 if (lsm
->order
== LSM_ORDER_MUTABLE
&&
282 strcmp(lsm
->name
, name
) == 0) {
283 append_ordered_lsm(lsm
, origin
);
289 init_debug("%s ignored: %s\n", origin
, name
);
292 /* Process "security=", if given. */
293 if (chosen_major_lsm
) {
294 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
295 if (exists_ordered_lsm(lsm
))
297 if (strcmp(lsm
->name
, chosen_major_lsm
) == 0)
298 append_ordered_lsm(lsm
, "security=");
302 /* Disable all LSMs not in the ordered list. */
303 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
304 if (exists_ordered_lsm(lsm
))
306 set_enabled(lsm
, false);
307 init_debug("%s disabled: %s\n", origin
, lsm
->name
);
313 static void __init
lsm_early_cred(struct cred
*cred
);
314 static void __init
lsm_early_task(struct task_struct
*task
);
316 static int lsm_append(const char *new, char **result
);
318 static void __init
ordered_lsm_init(void)
320 struct lsm_info
**lsm
;
322 ordered_lsms
= kcalloc(LSM_COUNT
+ 1, sizeof(*ordered_lsms
),
325 if (chosen_lsm_order
) {
326 if (chosen_major_lsm
) {
327 pr_info("security= is ignored because it is superseded by lsm=\n");
328 chosen_major_lsm
= NULL
;
330 ordered_lsm_parse(chosen_lsm_order
, "cmdline");
332 ordered_lsm_parse(builtin_lsm_order
, "builtin");
334 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
337 init_debug("cred blob size = %d\n", blob_sizes
.lbs_cred
);
338 init_debug("file blob size = %d\n", blob_sizes
.lbs_file
);
339 init_debug("inode blob size = %d\n", blob_sizes
.lbs_inode
);
340 init_debug("ipc blob size = %d\n", blob_sizes
.lbs_ipc
);
341 init_debug("msg_msg blob size = %d\n", blob_sizes
.lbs_msg_msg
);
342 init_debug("superblock blob size = %d\n", blob_sizes
.lbs_superblock
);
343 init_debug("task blob size = %d\n", blob_sizes
.lbs_task
);
346 * Create any kmem_caches needed for blobs
348 if (blob_sizes
.lbs_file
)
349 lsm_file_cache
= kmem_cache_create("lsm_file_cache",
350 blob_sizes
.lbs_file
, 0,
352 if (blob_sizes
.lbs_inode
)
353 lsm_inode_cache
= kmem_cache_create("lsm_inode_cache",
354 blob_sizes
.lbs_inode
, 0,
357 lsm_early_cred((struct cred
*) current
->cred
);
358 lsm_early_task(current
);
359 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
360 initialize_lsm(*lsm
);
365 int __init
early_security_init(void)
368 struct hlist_head
*list
= (struct hlist_head
*) &security_hook_heads
;
369 struct lsm_info
*lsm
;
371 for (i
= 0; i
< sizeof(security_hook_heads
) / sizeof(struct hlist_head
);
373 INIT_HLIST_HEAD(&list
[i
]);
375 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
377 lsm
->enabled
= &lsm_enabled_true
;
386 * security_init - initializes the security framework
388 * This should be called early in the kernel initialization sequence.
390 int __init
security_init(void)
392 struct lsm_info
*lsm
;
394 pr_info("Security Framework initializing\n");
397 * Append the names of the early LSM modules now that kmalloc() is
400 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
402 lsm_append(lsm
->name
, &lsm_names
);
405 /* Load LSMs in specified order. */
411 /* Save user chosen LSM */
412 static int __init
choose_major_lsm(char *str
)
414 chosen_major_lsm
= str
;
417 __setup("security=", choose_major_lsm
);
419 /* Explicitly choose LSM initialization order. */
420 static int __init
choose_lsm_order(char *str
)
422 chosen_lsm_order
= str
;
425 __setup("lsm=", choose_lsm_order
);
427 /* Enable LSM order debugging. */
428 static int __init
enable_debug(char *str
)
433 __setup("lsm.debug", enable_debug
);
435 static bool match_last_lsm(const char *list
, const char *lsm
)
439 if (WARN_ON(!list
|| !lsm
))
441 last
= strrchr(list
, ',');
443 /* Pass the comma, strcmp() will check for '\0' */
447 return !strcmp(last
, lsm
);
450 static int lsm_append(const char *new, char **result
)
454 if (*result
== NULL
) {
455 *result
= kstrdup(new, GFP_KERNEL
);
459 /* Check if it is the last registered name */
460 if (match_last_lsm(*result
, new))
462 cp
= kasprintf(GFP_KERNEL
, "%s,%s", *result
, new);
472 * security_add_hooks - Add a modules hooks to the hook lists.
473 * @hooks: the hooks to add
474 * @count: the number of hooks to add
475 * @lsm: the name of the security module
477 * Each LSM has to register its hooks with the infrastructure.
479 void __init
security_add_hooks(struct security_hook_list
*hooks
, int count
,
484 for (i
= 0; i
< count
; i
++) {
486 hlist_add_tail_rcu(&hooks
[i
].list
, hooks
[i
].head
);
490 * Don't try to append during early_security_init(), we'll come back
491 * and fix this up afterwards.
493 if (slab_is_available()) {
494 if (lsm_append(lsm
, &lsm_names
) < 0)
495 panic("%s - Cannot get early memory.\n", __func__
);
499 int call_blocking_lsm_notifier(enum lsm_event event
, void *data
)
501 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain
,
504 EXPORT_SYMBOL(call_blocking_lsm_notifier
);
506 int register_blocking_lsm_notifier(struct notifier_block
*nb
)
508 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain
,
511 EXPORT_SYMBOL(register_blocking_lsm_notifier
);
513 int unregister_blocking_lsm_notifier(struct notifier_block
*nb
)
515 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain
,
518 EXPORT_SYMBOL(unregister_blocking_lsm_notifier
);
521 * lsm_cred_alloc - allocate a composite cred blob
522 * @cred: the cred that needs a blob
523 * @gfp: allocation type
525 * Allocate the cred blob for all the modules
527 * Returns 0, or -ENOMEM if memory can't be allocated.
529 static int lsm_cred_alloc(struct cred
*cred
, gfp_t gfp
)
531 if (blob_sizes
.lbs_cred
== 0) {
532 cred
->security
= NULL
;
536 cred
->security
= kzalloc(blob_sizes
.lbs_cred
, gfp
);
537 if (cred
->security
== NULL
)
543 * lsm_early_cred - during initialization allocate a composite cred blob
544 * @cred: the cred that needs a blob
546 * Allocate the cred blob for all the modules
548 static void __init
lsm_early_cred(struct cred
*cred
)
550 int rc
= lsm_cred_alloc(cred
, GFP_KERNEL
);
553 panic("%s: Early cred alloc failed.\n", __func__
);
557 * lsm_file_alloc - allocate a composite file blob
558 * @file: the file that needs a blob
560 * Allocate the file blob for all the modules
562 * Returns 0, or -ENOMEM if memory can't be allocated.
564 static int lsm_file_alloc(struct file
*file
)
566 if (!lsm_file_cache
) {
567 file
->f_security
= NULL
;
571 file
->f_security
= kmem_cache_zalloc(lsm_file_cache
, GFP_KERNEL
);
572 if (file
->f_security
== NULL
)
578 * lsm_inode_alloc - allocate a composite inode blob
579 * @inode: the inode that needs a blob
581 * Allocate the inode blob for all the modules
583 * Returns 0, or -ENOMEM if memory can't be allocated.
585 int lsm_inode_alloc(struct inode
*inode
)
587 if (!lsm_inode_cache
) {
588 inode
->i_security
= NULL
;
592 inode
->i_security
= kmem_cache_zalloc(lsm_inode_cache
, GFP_NOFS
);
593 if (inode
->i_security
== NULL
)
599 * lsm_task_alloc - allocate a composite task blob
600 * @task: the task that needs a blob
602 * Allocate the task blob for all the modules
604 * Returns 0, or -ENOMEM if memory can't be allocated.
606 static int lsm_task_alloc(struct task_struct
*task
)
608 if (blob_sizes
.lbs_task
== 0) {
609 task
->security
= NULL
;
613 task
->security
= kzalloc(blob_sizes
.lbs_task
, GFP_KERNEL
);
614 if (task
->security
== NULL
)
620 * lsm_ipc_alloc - allocate a composite ipc blob
621 * @kip: the ipc that needs a blob
623 * Allocate the ipc blob for all the modules
625 * Returns 0, or -ENOMEM if memory can't be allocated.
627 static int lsm_ipc_alloc(struct kern_ipc_perm
*kip
)
629 if (blob_sizes
.lbs_ipc
== 0) {
630 kip
->security
= NULL
;
634 kip
->security
= kzalloc(blob_sizes
.lbs_ipc
, GFP_KERNEL
);
635 if (kip
->security
== NULL
)
641 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
642 * @mp: the msg_msg that needs a blob
644 * Allocate the ipc blob for all the modules
646 * Returns 0, or -ENOMEM if memory can't be allocated.
648 static int lsm_msg_msg_alloc(struct msg_msg
*mp
)
650 if (blob_sizes
.lbs_msg_msg
== 0) {
655 mp
->security
= kzalloc(blob_sizes
.lbs_msg_msg
, GFP_KERNEL
);
656 if (mp
->security
== NULL
)
662 * lsm_early_task - during initialization allocate a composite task blob
663 * @task: the task that needs a blob
665 * Allocate the task blob for all the modules
667 static void __init
lsm_early_task(struct task_struct
*task
)
669 int rc
= lsm_task_alloc(task
);
672 panic("%s: Early task alloc failed.\n", __func__
);
676 * lsm_superblock_alloc - allocate a composite superblock blob
677 * @sb: the superblock that needs a blob
679 * Allocate the superblock blob for all the modules
681 * Returns 0, or -ENOMEM if memory can't be allocated.
683 static int lsm_superblock_alloc(struct super_block
*sb
)
685 if (blob_sizes
.lbs_superblock
== 0) {
686 sb
->s_security
= NULL
;
690 sb
->s_security
= kzalloc(blob_sizes
.lbs_superblock
, GFP_KERNEL
);
691 if (sb
->s_security
== NULL
)
697 * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
698 * can be accessed with:
700 * LSM_RET_DEFAULT(<hook_name>)
702 * The macros below define static constants for the default value of each
705 #define LSM_RET_DEFAULT(NAME) (NAME##_default)
706 #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
707 #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
708 static const int LSM_RET_DEFAULT(NAME) = (DEFAULT);
709 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
710 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
712 #include <linux/lsm_hook_defs.h>
716 * Hook list operation macros.
719 * This is a hook that does not return a value.
722 * This is a hook that returns a value.
725 #define call_void_hook(FUNC, ...) \
727 struct security_hook_list *P; \
729 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
730 P->hook.FUNC(__VA_ARGS__); \
733 #define call_int_hook(FUNC, IRC, ...) ({ \
736 struct security_hook_list *P; \
738 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
739 RC = P->hook.FUNC(__VA_ARGS__); \
747 /* Security operations */
749 int security_binder_set_context_mgr(struct task_struct
*mgr
)
751 return call_int_hook(binder_set_context_mgr
, 0, mgr
);
754 int security_binder_transaction(struct task_struct
*from
,
755 struct task_struct
*to
)
757 return call_int_hook(binder_transaction
, 0, from
, to
);
760 int security_binder_transfer_binder(struct task_struct
*from
,
761 struct task_struct
*to
)
763 return call_int_hook(binder_transfer_binder
, 0, from
, to
);
766 int security_binder_transfer_file(struct task_struct
*from
,
767 struct task_struct
*to
, struct file
*file
)
769 return call_int_hook(binder_transfer_file
, 0, from
, to
, file
);
772 int security_ptrace_access_check(struct task_struct
*child
, unsigned int mode
)
774 return call_int_hook(ptrace_access_check
, 0, child
, mode
);
777 int security_ptrace_traceme(struct task_struct
*parent
)
779 return call_int_hook(ptrace_traceme
, 0, parent
);
782 int security_capget(struct task_struct
*target
,
783 kernel_cap_t
*effective
,
784 kernel_cap_t
*inheritable
,
785 kernel_cap_t
*permitted
)
787 return call_int_hook(capget
, 0, target
,
788 effective
, inheritable
, permitted
);
791 int security_capset(struct cred
*new, const struct cred
*old
,
792 const kernel_cap_t
*effective
,
793 const kernel_cap_t
*inheritable
,
794 const kernel_cap_t
*permitted
)
796 return call_int_hook(capset
, 0, new, old
,
797 effective
, inheritable
, permitted
);
800 int security_capable(const struct cred
*cred
,
801 struct user_namespace
*ns
,
805 return call_int_hook(capable
, 0, cred
, ns
, cap
, opts
);
808 int security_quotactl(int cmds
, int type
, int id
, struct super_block
*sb
)
810 return call_int_hook(quotactl
, 0, cmds
, type
, id
, sb
);
813 int security_quota_on(struct dentry
*dentry
)
815 return call_int_hook(quota_on
, 0, dentry
);
818 int security_syslog(int type
)
820 return call_int_hook(syslog
, 0, type
);
823 int security_settime64(const struct timespec64
*ts
, const struct timezone
*tz
)
825 return call_int_hook(settime
, 0, ts
, tz
);
828 int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
)
830 struct security_hook_list
*hp
;
831 int cap_sys_admin
= 1;
835 * The module will respond with a positive value if
836 * it thinks the __vm_enough_memory() call should be
837 * made with the cap_sys_admin set. If all of the modules
838 * agree that it should be set it will. If any module
839 * thinks it should not be set it won't.
841 hlist_for_each_entry(hp
, &security_hook_heads
.vm_enough_memory
, list
) {
842 rc
= hp
->hook
.vm_enough_memory(mm
, pages
);
848 return __vm_enough_memory(mm
, pages
, cap_sys_admin
);
851 int security_bprm_creds_for_exec(struct linux_binprm
*bprm
)
853 return call_int_hook(bprm_creds_for_exec
, 0, bprm
);
856 int security_bprm_creds_from_file(struct linux_binprm
*bprm
, struct file
*file
)
858 return call_int_hook(bprm_creds_from_file
, 0, bprm
, file
);
861 int security_bprm_check(struct linux_binprm
*bprm
)
865 ret
= call_int_hook(bprm_check_security
, 0, bprm
);
868 return ima_bprm_check(bprm
);
871 void security_bprm_committing_creds(struct linux_binprm
*bprm
)
873 call_void_hook(bprm_committing_creds
, bprm
);
876 void security_bprm_committed_creds(struct linux_binprm
*bprm
)
878 call_void_hook(bprm_committed_creds
, bprm
);
881 int security_fs_context_dup(struct fs_context
*fc
, struct fs_context
*src_fc
)
883 return call_int_hook(fs_context_dup
, 0, fc
, src_fc
);
886 int security_fs_context_parse_param(struct fs_context
*fc
, struct fs_parameter
*param
)
888 return call_int_hook(fs_context_parse_param
, -ENOPARAM
, fc
, param
);
891 int security_sb_alloc(struct super_block
*sb
)
893 int rc
= lsm_superblock_alloc(sb
);
897 rc
= call_int_hook(sb_alloc_security
, 0, sb
);
899 security_sb_free(sb
);
903 void security_sb_delete(struct super_block
*sb
)
905 call_void_hook(sb_delete
, sb
);
908 void security_sb_free(struct super_block
*sb
)
910 call_void_hook(sb_free_security
, sb
);
911 kfree(sb
->s_security
);
912 sb
->s_security
= NULL
;
915 void security_free_mnt_opts(void **mnt_opts
)
919 call_void_hook(sb_free_mnt_opts
, *mnt_opts
);
922 EXPORT_SYMBOL(security_free_mnt_opts
);
924 int security_sb_eat_lsm_opts(char *options
, void **mnt_opts
)
926 return call_int_hook(sb_eat_lsm_opts
, 0, options
, mnt_opts
);
928 EXPORT_SYMBOL(security_sb_eat_lsm_opts
);
930 int security_sb_mnt_opts_compat(struct super_block
*sb
,
933 return call_int_hook(sb_mnt_opts_compat
, 0, sb
, mnt_opts
);
935 EXPORT_SYMBOL(security_sb_mnt_opts_compat
);
937 int security_sb_remount(struct super_block
*sb
,
940 return call_int_hook(sb_remount
, 0, sb
, mnt_opts
);
942 EXPORT_SYMBOL(security_sb_remount
);
944 int security_sb_kern_mount(struct super_block
*sb
)
946 return call_int_hook(sb_kern_mount
, 0, sb
);
949 int security_sb_show_options(struct seq_file
*m
, struct super_block
*sb
)
951 return call_int_hook(sb_show_options
, 0, m
, sb
);
954 int security_sb_statfs(struct dentry
*dentry
)
956 return call_int_hook(sb_statfs
, 0, dentry
);
959 int security_sb_mount(const char *dev_name
, const struct path
*path
,
960 const char *type
, unsigned long flags
, void *data
)
962 return call_int_hook(sb_mount
, 0, dev_name
, path
, type
, flags
, data
);
965 int security_sb_umount(struct vfsmount
*mnt
, int flags
)
967 return call_int_hook(sb_umount
, 0, mnt
, flags
);
970 int security_sb_pivotroot(const struct path
*old_path
, const struct path
*new_path
)
972 return call_int_hook(sb_pivotroot
, 0, old_path
, new_path
);
975 int security_sb_set_mnt_opts(struct super_block
*sb
,
977 unsigned long kern_flags
,
978 unsigned long *set_kern_flags
)
980 return call_int_hook(sb_set_mnt_opts
,
981 mnt_opts
? -EOPNOTSUPP
: 0, sb
,
982 mnt_opts
, kern_flags
, set_kern_flags
);
984 EXPORT_SYMBOL(security_sb_set_mnt_opts
);
986 int security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
987 struct super_block
*newsb
,
988 unsigned long kern_flags
,
989 unsigned long *set_kern_flags
)
991 return call_int_hook(sb_clone_mnt_opts
, 0, oldsb
, newsb
,
992 kern_flags
, set_kern_flags
);
994 EXPORT_SYMBOL(security_sb_clone_mnt_opts
);
996 int security_add_mnt_opt(const char *option
, const char *val
, int len
,
999 return call_int_hook(sb_add_mnt_opt
, -EINVAL
,
1000 option
, val
, len
, mnt_opts
);
1002 EXPORT_SYMBOL(security_add_mnt_opt
);
1004 int security_move_mount(const struct path
*from_path
, const struct path
*to_path
)
1006 return call_int_hook(move_mount
, 0, from_path
, to_path
);
1009 int security_path_notify(const struct path
*path
, u64 mask
,
1010 unsigned int obj_type
)
1012 return call_int_hook(path_notify
, 0, path
, mask
, obj_type
);
1015 int security_inode_alloc(struct inode
*inode
)
1017 int rc
= lsm_inode_alloc(inode
);
1021 rc
= call_int_hook(inode_alloc_security
, 0, inode
);
1023 security_inode_free(inode
);
1027 static void inode_free_by_rcu(struct rcu_head
*head
)
1030 * The rcu head is at the start of the inode blob
1032 kmem_cache_free(lsm_inode_cache
, head
);
1035 void security_inode_free(struct inode
*inode
)
1037 integrity_inode_free(inode
);
1038 call_void_hook(inode_free_security
, inode
);
1040 * The inode may still be referenced in a path walk and
1041 * a call to security_inode_permission() can be made
1042 * after inode_free_security() is called. Ideally, the VFS
1043 * wouldn't do this, but fixing that is a much harder
1044 * job. For now, simply free the i_security via RCU, and
1045 * leave the current inode->i_security pointer intact.
1046 * The inode will be freed after the RCU grace period too.
1048 if (inode
->i_security
)
1049 call_rcu((struct rcu_head
*)inode
->i_security
,
1053 int security_dentry_init_security(struct dentry
*dentry
, int mode
,
1054 const struct qstr
*name
, void **ctx
,
1057 return call_int_hook(dentry_init_security
, -EOPNOTSUPP
, dentry
, mode
,
1060 EXPORT_SYMBOL(security_dentry_init_security
);
1062 int security_dentry_create_files_as(struct dentry
*dentry
, int mode
,
1064 const struct cred
*old
, struct cred
*new)
1066 return call_int_hook(dentry_create_files_as
, 0, dentry
, mode
,
1069 EXPORT_SYMBOL(security_dentry_create_files_as
);
1071 int security_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1072 const struct qstr
*qstr
,
1073 const initxattrs initxattrs
, void *fs_data
)
1075 struct xattr new_xattrs
[MAX_LSM_EVM_XATTR
+ 1];
1076 struct xattr
*lsm_xattr
, *evm_xattr
, *xattr
;
1079 if (unlikely(IS_PRIVATE(inode
)))
1083 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
,
1084 dir
, qstr
, NULL
, NULL
, NULL
);
1085 memset(new_xattrs
, 0, sizeof(new_xattrs
));
1086 lsm_xattr
= new_xattrs
;
1087 ret
= call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
, qstr
,
1090 &lsm_xattr
->value_len
);
1094 evm_xattr
= lsm_xattr
+ 1;
1095 ret
= evm_inode_init_security(inode
, lsm_xattr
, evm_xattr
);
1098 ret
= initxattrs(inode
, new_xattrs
, fs_data
);
1100 for (xattr
= new_xattrs
; xattr
->value
!= NULL
; xattr
++)
1101 kfree(xattr
->value
);
1102 return (ret
== -EOPNOTSUPP
) ? 0 : ret
;
1104 EXPORT_SYMBOL(security_inode_init_security
);
1106 int security_inode_init_security_anon(struct inode
*inode
,
1107 const struct qstr
*name
,
1108 const struct inode
*context_inode
)
1110 return call_int_hook(inode_init_security_anon
, 0, inode
, name
,
1114 int security_old_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1115 const struct qstr
*qstr
, const char **name
,
1116 void **value
, size_t *len
)
1118 if (unlikely(IS_PRIVATE(inode
)))
1120 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
,
1121 qstr
, name
, value
, len
);
1123 EXPORT_SYMBOL(security_old_inode_init_security
);
1125 #ifdef CONFIG_SECURITY_PATH
1126 int security_path_mknod(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
,
1129 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1131 return call_int_hook(path_mknod
, 0, dir
, dentry
, mode
, dev
);
1133 EXPORT_SYMBOL(security_path_mknod
);
1135 int security_path_mkdir(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
)
1137 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1139 return call_int_hook(path_mkdir
, 0, dir
, dentry
, mode
);
1141 EXPORT_SYMBOL(security_path_mkdir
);
1143 int security_path_rmdir(const struct path
*dir
, struct dentry
*dentry
)
1145 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1147 return call_int_hook(path_rmdir
, 0, dir
, dentry
);
1150 int security_path_unlink(const struct path
*dir
, struct dentry
*dentry
)
1152 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1154 return call_int_hook(path_unlink
, 0, dir
, dentry
);
1156 EXPORT_SYMBOL(security_path_unlink
);
1158 int security_path_symlink(const struct path
*dir
, struct dentry
*dentry
,
1159 const char *old_name
)
1161 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1163 return call_int_hook(path_symlink
, 0, dir
, dentry
, old_name
);
1166 int security_path_link(struct dentry
*old_dentry
, const struct path
*new_dir
,
1167 struct dentry
*new_dentry
)
1169 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1171 return call_int_hook(path_link
, 0, old_dentry
, new_dir
, new_dentry
);
1174 int security_path_rename(const struct path
*old_dir
, struct dentry
*old_dentry
,
1175 const struct path
*new_dir
, struct dentry
*new_dentry
,
1178 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1179 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1182 if (flags
& RENAME_EXCHANGE
) {
1183 int err
= call_int_hook(path_rename
, 0, new_dir
, new_dentry
,
1184 old_dir
, old_dentry
);
1189 return call_int_hook(path_rename
, 0, old_dir
, old_dentry
, new_dir
,
1192 EXPORT_SYMBOL(security_path_rename
);
1194 int security_path_truncate(const struct path
*path
)
1196 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1198 return call_int_hook(path_truncate
, 0, path
);
1201 int security_path_chmod(const struct path
*path
, umode_t mode
)
1203 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1205 return call_int_hook(path_chmod
, 0, path
, mode
);
1208 int security_path_chown(const struct path
*path
, kuid_t uid
, kgid_t gid
)
1210 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1212 return call_int_hook(path_chown
, 0, path
, uid
, gid
);
1215 int security_path_chroot(const struct path
*path
)
1217 return call_int_hook(path_chroot
, 0, path
);
1221 int security_inode_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1223 if (unlikely(IS_PRIVATE(dir
)))
1225 return call_int_hook(inode_create
, 0, dir
, dentry
, mode
);
1227 EXPORT_SYMBOL_GPL(security_inode_create
);
1229 int security_inode_link(struct dentry
*old_dentry
, struct inode
*dir
,
1230 struct dentry
*new_dentry
)
1232 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1234 return call_int_hook(inode_link
, 0, old_dentry
, dir
, new_dentry
);
1237 int security_inode_unlink(struct inode
*dir
, struct dentry
*dentry
)
1239 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1241 return call_int_hook(inode_unlink
, 0, dir
, dentry
);
1244 int security_inode_symlink(struct inode
*dir
, struct dentry
*dentry
,
1245 const char *old_name
)
1247 if (unlikely(IS_PRIVATE(dir
)))
1249 return call_int_hook(inode_symlink
, 0, dir
, dentry
, old_name
);
1252 int security_inode_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1254 if (unlikely(IS_PRIVATE(dir
)))
1256 return call_int_hook(inode_mkdir
, 0, dir
, dentry
, mode
);
1258 EXPORT_SYMBOL_GPL(security_inode_mkdir
);
1260 int security_inode_rmdir(struct inode
*dir
, struct dentry
*dentry
)
1262 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1264 return call_int_hook(inode_rmdir
, 0, dir
, dentry
);
1267 int security_inode_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
, dev_t dev
)
1269 if (unlikely(IS_PRIVATE(dir
)))
1271 return call_int_hook(inode_mknod
, 0, dir
, dentry
, mode
, dev
);
1274 int security_inode_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1275 struct inode
*new_dir
, struct dentry
*new_dentry
,
1278 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1279 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1282 if (flags
& RENAME_EXCHANGE
) {
1283 int err
= call_int_hook(inode_rename
, 0, new_dir
, new_dentry
,
1284 old_dir
, old_dentry
);
1289 return call_int_hook(inode_rename
, 0, old_dir
, old_dentry
,
1290 new_dir
, new_dentry
);
1293 int security_inode_readlink(struct dentry
*dentry
)
1295 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1297 return call_int_hook(inode_readlink
, 0, dentry
);
1300 int security_inode_follow_link(struct dentry
*dentry
, struct inode
*inode
,
1303 if (unlikely(IS_PRIVATE(inode
)))
1305 return call_int_hook(inode_follow_link
, 0, dentry
, inode
, rcu
);
1308 int security_inode_permission(struct inode
*inode
, int mask
)
1310 if (unlikely(IS_PRIVATE(inode
)))
1312 return call_int_hook(inode_permission
, 0, inode
, mask
);
1315 int security_inode_setattr(struct dentry
*dentry
, struct iattr
*attr
)
1319 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1321 ret
= call_int_hook(inode_setattr
, 0, dentry
, attr
);
1324 return evm_inode_setattr(dentry
, attr
);
1326 EXPORT_SYMBOL_GPL(security_inode_setattr
);
1328 int security_inode_getattr(const struct path
*path
)
1330 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1332 return call_int_hook(inode_getattr
, 0, path
);
1335 int security_inode_setxattr(struct user_namespace
*mnt_userns
,
1336 struct dentry
*dentry
, const char *name
,
1337 const void *value
, size_t size
, int flags
)
1341 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1344 * SELinux and Smack integrate the cap call,
1345 * so assume that all LSMs supplying this call do so.
1347 ret
= call_int_hook(inode_setxattr
, 1, mnt_userns
, dentry
, name
, value
,
1351 ret
= cap_inode_setxattr(dentry
, name
, value
, size
, flags
);
1354 ret
= ima_inode_setxattr(dentry
, name
, value
, size
);
1357 return evm_inode_setxattr(dentry
, name
, value
, size
);
1360 void security_inode_post_setxattr(struct dentry
*dentry
, const char *name
,
1361 const void *value
, size_t size
, int flags
)
1363 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1365 call_void_hook(inode_post_setxattr
, dentry
, name
, value
, size
, flags
);
1366 evm_inode_post_setxattr(dentry
, name
, value
, size
);
1369 int security_inode_getxattr(struct dentry
*dentry
, const char *name
)
1371 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1373 return call_int_hook(inode_getxattr
, 0, dentry
, name
);
1376 int security_inode_listxattr(struct dentry
*dentry
)
1378 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1380 return call_int_hook(inode_listxattr
, 0, dentry
);
1383 int security_inode_removexattr(struct user_namespace
*mnt_userns
,
1384 struct dentry
*dentry
, const char *name
)
1388 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1391 * SELinux and Smack integrate the cap call,
1392 * so assume that all LSMs supplying this call do so.
1394 ret
= call_int_hook(inode_removexattr
, 1, mnt_userns
, dentry
, name
);
1396 ret
= cap_inode_removexattr(mnt_userns
, dentry
, name
);
1399 ret
= ima_inode_removexattr(dentry
, name
);
1402 return evm_inode_removexattr(dentry
, name
);
1405 int security_inode_need_killpriv(struct dentry
*dentry
)
1407 return call_int_hook(inode_need_killpriv
, 0, dentry
);
1410 int security_inode_killpriv(struct user_namespace
*mnt_userns
,
1411 struct dentry
*dentry
)
1413 return call_int_hook(inode_killpriv
, 0, mnt_userns
, dentry
);
1416 int security_inode_getsecurity(struct user_namespace
*mnt_userns
,
1417 struct inode
*inode
, const char *name
,
1418 void **buffer
, bool alloc
)
1420 struct security_hook_list
*hp
;
1423 if (unlikely(IS_PRIVATE(inode
)))
1424 return LSM_RET_DEFAULT(inode_getsecurity
);
1426 * Only one module will provide an attribute with a given name.
1428 hlist_for_each_entry(hp
, &security_hook_heads
.inode_getsecurity
, list
) {
1429 rc
= hp
->hook
.inode_getsecurity(mnt_userns
, inode
, name
, buffer
, alloc
);
1430 if (rc
!= LSM_RET_DEFAULT(inode_getsecurity
))
1433 return LSM_RET_DEFAULT(inode_getsecurity
);
1436 int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
)
1438 struct security_hook_list
*hp
;
1441 if (unlikely(IS_PRIVATE(inode
)))
1442 return LSM_RET_DEFAULT(inode_setsecurity
);
1444 * Only one module will provide an attribute with a given name.
1446 hlist_for_each_entry(hp
, &security_hook_heads
.inode_setsecurity
, list
) {
1447 rc
= hp
->hook
.inode_setsecurity(inode
, name
, value
, size
,
1449 if (rc
!= LSM_RET_DEFAULT(inode_setsecurity
))
1452 return LSM_RET_DEFAULT(inode_setsecurity
);
1455 int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
)
1457 if (unlikely(IS_PRIVATE(inode
)))
1459 return call_int_hook(inode_listsecurity
, 0, inode
, buffer
, buffer_size
);
1461 EXPORT_SYMBOL(security_inode_listsecurity
);
1463 void security_inode_getsecid(struct inode
*inode
, u32
*secid
)
1465 call_void_hook(inode_getsecid
, inode
, secid
);
1468 int security_inode_copy_up(struct dentry
*src
, struct cred
**new)
1470 return call_int_hook(inode_copy_up
, 0, src
, new);
1472 EXPORT_SYMBOL(security_inode_copy_up
);
1474 int security_inode_copy_up_xattr(const char *name
)
1476 struct security_hook_list
*hp
;
1480 * The implementation can return 0 (accept the xattr), 1 (discard the
1481 * xattr), -EOPNOTSUPP if it does not know anything about the xattr or
1482 * any other error code incase of an error.
1484 hlist_for_each_entry(hp
,
1485 &security_hook_heads
.inode_copy_up_xattr
, list
) {
1486 rc
= hp
->hook
.inode_copy_up_xattr(name
);
1487 if (rc
!= LSM_RET_DEFAULT(inode_copy_up_xattr
))
1491 return LSM_RET_DEFAULT(inode_copy_up_xattr
);
1493 EXPORT_SYMBOL(security_inode_copy_up_xattr
);
1495 int security_kernfs_init_security(struct kernfs_node
*kn_dir
,
1496 struct kernfs_node
*kn
)
1498 return call_int_hook(kernfs_init_security
, 0, kn_dir
, kn
);
1501 int security_file_permission(struct file
*file
, int mask
)
1505 ret
= call_int_hook(file_permission
, 0, file
, mask
);
1509 return fsnotify_perm(file
, mask
);
1512 int security_file_alloc(struct file
*file
)
1514 int rc
= lsm_file_alloc(file
);
1518 rc
= call_int_hook(file_alloc_security
, 0, file
);
1520 security_file_free(file
);
1524 void security_file_free(struct file
*file
)
1528 call_void_hook(file_free_security
, file
);
1530 blob
= file
->f_security
;
1532 file
->f_security
= NULL
;
1533 kmem_cache_free(lsm_file_cache
, blob
);
1537 int security_file_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1539 return call_int_hook(file_ioctl
, 0, file
, cmd
, arg
);
1541 EXPORT_SYMBOL_GPL(security_file_ioctl
);
1543 static inline unsigned long mmap_prot(struct file
*file
, unsigned long prot
)
1546 * Does we have PROT_READ and does the application expect
1547 * it to imply PROT_EXEC? If not, nothing to talk about...
1549 if ((prot
& (PROT_READ
| PROT_EXEC
)) != PROT_READ
)
1551 if (!(current
->personality
& READ_IMPLIES_EXEC
))
1554 * if that's an anonymous mapping, let it.
1557 return prot
| PROT_EXEC
;
1559 * ditto if it's not on noexec mount, except that on !MMU we need
1560 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1562 if (!path_noexec(&file
->f_path
)) {
1564 if (file
->f_op
->mmap_capabilities
) {
1565 unsigned caps
= file
->f_op
->mmap_capabilities(file
);
1566 if (!(caps
& NOMMU_MAP_EXEC
))
1570 return prot
| PROT_EXEC
;
1572 /* anything on noexec mount won't get PROT_EXEC */
1576 int security_mmap_file(struct file
*file
, unsigned long prot
,
1577 unsigned long flags
)
1580 ret
= call_int_hook(mmap_file
, 0, file
, prot
,
1581 mmap_prot(file
, prot
), flags
);
1584 return ima_file_mmap(file
, prot
);
1587 int security_mmap_addr(unsigned long addr
)
1589 return call_int_hook(mmap_addr
, 0, addr
);
1592 int security_file_mprotect(struct vm_area_struct
*vma
, unsigned long reqprot
,
1597 ret
= call_int_hook(file_mprotect
, 0, vma
, reqprot
, prot
);
1600 return ima_file_mprotect(vma
, prot
);
1603 int security_file_lock(struct file
*file
, unsigned int cmd
)
1605 return call_int_hook(file_lock
, 0, file
, cmd
);
1608 int security_file_fcntl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1610 return call_int_hook(file_fcntl
, 0, file
, cmd
, arg
);
1613 void security_file_set_fowner(struct file
*file
)
1615 call_void_hook(file_set_fowner
, file
);
1618 int security_file_send_sigiotask(struct task_struct
*tsk
,
1619 struct fown_struct
*fown
, int sig
)
1621 return call_int_hook(file_send_sigiotask
, 0, tsk
, fown
, sig
);
1624 int security_file_receive(struct file
*file
)
1626 return call_int_hook(file_receive
, 0, file
);
1629 int security_file_open(struct file
*file
)
1633 ret
= call_int_hook(file_open
, 0, file
);
1637 return fsnotify_perm(file
, MAY_OPEN
);
1640 int security_task_alloc(struct task_struct
*task
, unsigned long clone_flags
)
1642 int rc
= lsm_task_alloc(task
);
1646 rc
= call_int_hook(task_alloc
, 0, task
, clone_flags
);
1648 security_task_free(task
);
1652 void security_task_free(struct task_struct
*task
)
1654 call_void_hook(task_free
, task
);
1656 kfree(task
->security
);
1657 task
->security
= NULL
;
1660 int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
)
1662 int rc
= lsm_cred_alloc(cred
, gfp
);
1667 rc
= call_int_hook(cred_alloc_blank
, 0, cred
, gfp
);
1669 security_cred_free(cred
);
1673 void security_cred_free(struct cred
*cred
)
1676 * There is a failure case in prepare_creds() that
1677 * may result in a call here with ->security being NULL.
1679 if (unlikely(cred
->security
== NULL
))
1682 call_void_hook(cred_free
, cred
);
1684 kfree(cred
->security
);
1685 cred
->security
= NULL
;
1688 int security_prepare_creds(struct cred
*new, const struct cred
*old
, gfp_t gfp
)
1690 int rc
= lsm_cred_alloc(new, gfp
);
1695 rc
= call_int_hook(cred_prepare
, 0, new, old
, gfp
);
1697 security_cred_free(new);
1701 void security_transfer_creds(struct cred
*new, const struct cred
*old
)
1703 call_void_hook(cred_transfer
, new, old
);
1706 void security_cred_getsecid(const struct cred
*c
, u32
*secid
)
1709 call_void_hook(cred_getsecid
, c
, secid
);
1711 EXPORT_SYMBOL(security_cred_getsecid
);
1713 int security_kernel_act_as(struct cred
*new, u32 secid
)
1715 return call_int_hook(kernel_act_as
, 0, new, secid
);
1718 int security_kernel_create_files_as(struct cred
*new, struct inode
*inode
)
1720 return call_int_hook(kernel_create_files_as
, 0, new, inode
);
1723 int security_kernel_module_request(char *kmod_name
)
1727 ret
= call_int_hook(kernel_module_request
, 0, kmod_name
);
1730 return integrity_kernel_module_request(kmod_name
);
1733 int security_kernel_read_file(struct file
*file
, enum kernel_read_file_id id
,
1738 ret
= call_int_hook(kernel_read_file
, 0, file
, id
, contents
);
1741 return ima_read_file(file
, id
, contents
);
1743 EXPORT_SYMBOL_GPL(security_kernel_read_file
);
1745 int security_kernel_post_read_file(struct file
*file
, char *buf
, loff_t size
,
1746 enum kernel_read_file_id id
)
1750 ret
= call_int_hook(kernel_post_read_file
, 0, file
, buf
, size
, id
);
1753 return ima_post_read_file(file
, buf
, size
, id
);
1755 EXPORT_SYMBOL_GPL(security_kernel_post_read_file
);
1757 int security_kernel_load_data(enum kernel_load_data_id id
, bool contents
)
1761 ret
= call_int_hook(kernel_load_data
, 0, id
, contents
);
1764 return ima_load_data(id
, contents
);
1766 EXPORT_SYMBOL_GPL(security_kernel_load_data
);
1768 int security_kernel_post_load_data(char *buf
, loff_t size
,
1769 enum kernel_load_data_id id
,
1774 ret
= call_int_hook(kernel_post_load_data
, 0, buf
, size
, id
,
1778 return ima_post_load_data(buf
, size
, id
, description
);
1780 EXPORT_SYMBOL_GPL(security_kernel_post_load_data
);
1782 int security_task_fix_setuid(struct cred
*new, const struct cred
*old
,
1785 return call_int_hook(task_fix_setuid
, 0, new, old
, flags
);
1788 int security_task_fix_setgid(struct cred
*new, const struct cred
*old
,
1791 return call_int_hook(task_fix_setgid
, 0, new, old
, flags
);
1794 int security_task_setpgid(struct task_struct
*p
, pid_t pgid
)
1796 return call_int_hook(task_setpgid
, 0, p
, pgid
);
1799 int security_task_getpgid(struct task_struct
*p
)
1801 return call_int_hook(task_getpgid
, 0, p
);
1804 int security_task_getsid(struct task_struct
*p
)
1806 return call_int_hook(task_getsid
, 0, p
);
1809 void security_task_getsecid_subj(struct task_struct
*p
, u32
*secid
)
1812 call_void_hook(task_getsecid_subj
, p
, secid
);
1814 EXPORT_SYMBOL(security_task_getsecid_subj
);
1816 void security_task_getsecid_obj(struct task_struct
*p
, u32
*secid
)
1819 call_void_hook(task_getsecid_obj
, p
, secid
);
1821 EXPORT_SYMBOL(security_task_getsecid_obj
);
1823 int security_task_setnice(struct task_struct
*p
, int nice
)
1825 return call_int_hook(task_setnice
, 0, p
, nice
);
1828 int security_task_setioprio(struct task_struct
*p
, int ioprio
)
1830 return call_int_hook(task_setioprio
, 0, p
, ioprio
);
1833 int security_task_getioprio(struct task_struct
*p
)
1835 return call_int_hook(task_getioprio
, 0, p
);
1838 int security_task_prlimit(const struct cred
*cred
, const struct cred
*tcred
,
1841 return call_int_hook(task_prlimit
, 0, cred
, tcred
, flags
);
1844 int security_task_setrlimit(struct task_struct
*p
, unsigned int resource
,
1845 struct rlimit
*new_rlim
)
1847 return call_int_hook(task_setrlimit
, 0, p
, resource
, new_rlim
);
1850 int security_task_setscheduler(struct task_struct
*p
)
1852 return call_int_hook(task_setscheduler
, 0, p
);
1855 int security_task_getscheduler(struct task_struct
*p
)
1857 return call_int_hook(task_getscheduler
, 0, p
);
1860 int security_task_movememory(struct task_struct
*p
)
1862 return call_int_hook(task_movememory
, 0, p
);
1865 int security_task_kill(struct task_struct
*p
, struct kernel_siginfo
*info
,
1866 int sig
, const struct cred
*cred
)
1868 return call_int_hook(task_kill
, 0, p
, info
, sig
, cred
);
1871 int security_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1872 unsigned long arg4
, unsigned long arg5
)
1875 int rc
= LSM_RET_DEFAULT(task_prctl
);
1876 struct security_hook_list
*hp
;
1878 hlist_for_each_entry(hp
, &security_hook_heads
.task_prctl
, list
) {
1879 thisrc
= hp
->hook
.task_prctl(option
, arg2
, arg3
, arg4
, arg5
);
1880 if (thisrc
!= LSM_RET_DEFAULT(task_prctl
)) {
1889 void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
)
1891 call_void_hook(task_to_inode
, p
, inode
);
1894 int security_ipc_permission(struct kern_ipc_perm
*ipcp
, short flag
)
1896 return call_int_hook(ipc_permission
, 0, ipcp
, flag
);
1899 void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
)
1902 call_void_hook(ipc_getsecid
, ipcp
, secid
);
1905 int security_msg_msg_alloc(struct msg_msg
*msg
)
1907 int rc
= lsm_msg_msg_alloc(msg
);
1911 rc
= call_int_hook(msg_msg_alloc_security
, 0, msg
);
1913 security_msg_msg_free(msg
);
1917 void security_msg_msg_free(struct msg_msg
*msg
)
1919 call_void_hook(msg_msg_free_security
, msg
);
1920 kfree(msg
->security
);
1921 msg
->security
= NULL
;
1924 int security_msg_queue_alloc(struct kern_ipc_perm
*msq
)
1926 int rc
= lsm_ipc_alloc(msq
);
1930 rc
= call_int_hook(msg_queue_alloc_security
, 0, msq
);
1932 security_msg_queue_free(msq
);
1936 void security_msg_queue_free(struct kern_ipc_perm
*msq
)
1938 call_void_hook(msg_queue_free_security
, msq
);
1939 kfree(msq
->security
);
1940 msq
->security
= NULL
;
1943 int security_msg_queue_associate(struct kern_ipc_perm
*msq
, int msqflg
)
1945 return call_int_hook(msg_queue_associate
, 0, msq
, msqflg
);
1948 int security_msg_queue_msgctl(struct kern_ipc_perm
*msq
, int cmd
)
1950 return call_int_hook(msg_queue_msgctl
, 0, msq
, cmd
);
1953 int security_msg_queue_msgsnd(struct kern_ipc_perm
*msq
,
1954 struct msg_msg
*msg
, int msqflg
)
1956 return call_int_hook(msg_queue_msgsnd
, 0, msq
, msg
, msqflg
);
1959 int security_msg_queue_msgrcv(struct kern_ipc_perm
*msq
, struct msg_msg
*msg
,
1960 struct task_struct
*target
, long type
, int mode
)
1962 return call_int_hook(msg_queue_msgrcv
, 0, msq
, msg
, target
, type
, mode
);
1965 int security_shm_alloc(struct kern_ipc_perm
*shp
)
1967 int rc
= lsm_ipc_alloc(shp
);
1971 rc
= call_int_hook(shm_alloc_security
, 0, shp
);
1973 security_shm_free(shp
);
1977 void security_shm_free(struct kern_ipc_perm
*shp
)
1979 call_void_hook(shm_free_security
, shp
);
1980 kfree(shp
->security
);
1981 shp
->security
= NULL
;
1984 int security_shm_associate(struct kern_ipc_perm
*shp
, int shmflg
)
1986 return call_int_hook(shm_associate
, 0, shp
, shmflg
);
1989 int security_shm_shmctl(struct kern_ipc_perm
*shp
, int cmd
)
1991 return call_int_hook(shm_shmctl
, 0, shp
, cmd
);
1994 int security_shm_shmat(struct kern_ipc_perm
*shp
, char __user
*shmaddr
, int shmflg
)
1996 return call_int_hook(shm_shmat
, 0, shp
, shmaddr
, shmflg
);
1999 int security_sem_alloc(struct kern_ipc_perm
*sma
)
2001 int rc
= lsm_ipc_alloc(sma
);
2005 rc
= call_int_hook(sem_alloc_security
, 0, sma
);
2007 security_sem_free(sma
);
2011 void security_sem_free(struct kern_ipc_perm
*sma
)
2013 call_void_hook(sem_free_security
, sma
);
2014 kfree(sma
->security
);
2015 sma
->security
= NULL
;
2018 int security_sem_associate(struct kern_ipc_perm
*sma
, int semflg
)
2020 return call_int_hook(sem_associate
, 0, sma
, semflg
);
2023 int security_sem_semctl(struct kern_ipc_perm
*sma
, int cmd
)
2025 return call_int_hook(sem_semctl
, 0, sma
, cmd
);
2028 int security_sem_semop(struct kern_ipc_perm
*sma
, struct sembuf
*sops
,
2029 unsigned nsops
, int alter
)
2031 return call_int_hook(sem_semop
, 0, sma
, sops
, nsops
, alter
);
2034 void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
)
2036 if (unlikely(inode
&& IS_PRIVATE(inode
)))
2038 call_void_hook(d_instantiate
, dentry
, inode
);
2040 EXPORT_SYMBOL(security_d_instantiate
);
2042 int security_getprocattr(struct task_struct
*p
, const char *lsm
, char *name
,
2045 struct security_hook_list
*hp
;
2047 hlist_for_each_entry(hp
, &security_hook_heads
.getprocattr
, list
) {
2048 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
2050 return hp
->hook
.getprocattr(p
, name
, value
);
2052 return LSM_RET_DEFAULT(getprocattr
);
2055 int security_setprocattr(const char *lsm
, const char *name
, void *value
,
2058 struct security_hook_list
*hp
;
2060 hlist_for_each_entry(hp
, &security_hook_heads
.setprocattr
, list
) {
2061 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
2063 return hp
->hook
.setprocattr(name
, value
, size
);
2065 return LSM_RET_DEFAULT(setprocattr
);
2068 int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
)
2070 return call_int_hook(netlink_send
, 0, sk
, skb
);
2073 int security_ismaclabel(const char *name
)
2075 return call_int_hook(ismaclabel
, 0, name
);
2077 EXPORT_SYMBOL(security_ismaclabel
);
2079 int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
)
2081 struct security_hook_list
*hp
;
2085 * Currently, only one LSM can implement secid_to_secctx (i.e this
2086 * LSM hook is not "stackable").
2088 hlist_for_each_entry(hp
, &security_hook_heads
.secid_to_secctx
, list
) {
2089 rc
= hp
->hook
.secid_to_secctx(secid
, secdata
, seclen
);
2090 if (rc
!= LSM_RET_DEFAULT(secid_to_secctx
))
2094 return LSM_RET_DEFAULT(secid_to_secctx
);
2096 EXPORT_SYMBOL(security_secid_to_secctx
);
2098 int security_secctx_to_secid(const char *secdata
, u32 seclen
, u32
*secid
)
2101 return call_int_hook(secctx_to_secid
, 0, secdata
, seclen
, secid
);
2103 EXPORT_SYMBOL(security_secctx_to_secid
);
2105 void security_release_secctx(char *secdata
, u32 seclen
)
2107 call_void_hook(release_secctx
, secdata
, seclen
);
2109 EXPORT_SYMBOL(security_release_secctx
);
2111 void security_inode_invalidate_secctx(struct inode
*inode
)
2113 call_void_hook(inode_invalidate_secctx
, inode
);
2115 EXPORT_SYMBOL(security_inode_invalidate_secctx
);
2117 int security_inode_notifysecctx(struct inode
*inode
, void *ctx
, u32 ctxlen
)
2119 return call_int_hook(inode_notifysecctx
, 0, inode
, ctx
, ctxlen
);
2121 EXPORT_SYMBOL(security_inode_notifysecctx
);
2123 int security_inode_setsecctx(struct dentry
*dentry
, void *ctx
, u32 ctxlen
)
2125 return call_int_hook(inode_setsecctx
, 0, dentry
, ctx
, ctxlen
);
2127 EXPORT_SYMBOL(security_inode_setsecctx
);
2129 int security_inode_getsecctx(struct inode
*inode
, void **ctx
, u32
*ctxlen
)
2131 return call_int_hook(inode_getsecctx
, -EOPNOTSUPP
, inode
, ctx
, ctxlen
);
2133 EXPORT_SYMBOL(security_inode_getsecctx
);
2135 #ifdef CONFIG_WATCH_QUEUE
2136 int security_post_notification(const struct cred
*w_cred
,
2137 const struct cred
*cred
,
2138 struct watch_notification
*n
)
2140 return call_int_hook(post_notification
, 0, w_cred
, cred
, n
);
2142 #endif /* CONFIG_WATCH_QUEUE */
2144 #ifdef CONFIG_KEY_NOTIFICATIONS
2145 int security_watch_key(struct key
*key
)
2147 return call_int_hook(watch_key
, 0, key
);
2151 #ifdef CONFIG_SECURITY_NETWORK
2153 int security_unix_stream_connect(struct sock
*sock
, struct sock
*other
, struct sock
*newsk
)
2155 return call_int_hook(unix_stream_connect
, 0, sock
, other
, newsk
);
2157 EXPORT_SYMBOL(security_unix_stream_connect
);
2159 int security_unix_may_send(struct socket
*sock
, struct socket
*other
)
2161 return call_int_hook(unix_may_send
, 0, sock
, other
);
2163 EXPORT_SYMBOL(security_unix_may_send
);
2165 int security_socket_create(int family
, int type
, int protocol
, int kern
)
2167 return call_int_hook(socket_create
, 0, family
, type
, protocol
, kern
);
2170 int security_socket_post_create(struct socket
*sock
, int family
,
2171 int type
, int protocol
, int kern
)
2173 return call_int_hook(socket_post_create
, 0, sock
, family
, type
,
2177 int security_socket_socketpair(struct socket
*socka
, struct socket
*sockb
)
2179 return call_int_hook(socket_socketpair
, 0, socka
, sockb
);
2181 EXPORT_SYMBOL(security_socket_socketpair
);
2183 int security_socket_bind(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2185 return call_int_hook(socket_bind
, 0, sock
, address
, addrlen
);
2188 int security_socket_connect(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2190 return call_int_hook(socket_connect
, 0, sock
, address
, addrlen
);
2193 int security_socket_listen(struct socket
*sock
, int backlog
)
2195 return call_int_hook(socket_listen
, 0, sock
, backlog
);
2198 int security_socket_accept(struct socket
*sock
, struct socket
*newsock
)
2200 return call_int_hook(socket_accept
, 0, sock
, newsock
);
2203 int security_socket_sendmsg(struct socket
*sock
, struct msghdr
*msg
, int size
)
2205 return call_int_hook(socket_sendmsg
, 0, sock
, msg
, size
);
2208 int security_socket_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
2209 int size
, int flags
)
2211 return call_int_hook(socket_recvmsg
, 0, sock
, msg
, size
, flags
);
2214 int security_socket_getsockname(struct socket
*sock
)
2216 return call_int_hook(socket_getsockname
, 0, sock
);
2219 int security_socket_getpeername(struct socket
*sock
)
2221 return call_int_hook(socket_getpeername
, 0, sock
);
2224 int security_socket_getsockopt(struct socket
*sock
, int level
, int optname
)
2226 return call_int_hook(socket_getsockopt
, 0, sock
, level
, optname
);
2229 int security_socket_setsockopt(struct socket
*sock
, int level
, int optname
)
2231 return call_int_hook(socket_setsockopt
, 0, sock
, level
, optname
);
2234 int security_socket_shutdown(struct socket
*sock
, int how
)
2236 return call_int_hook(socket_shutdown
, 0, sock
, how
);
2239 int security_sock_rcv_skb(struct sock
*sk
, struct sk_buff
*skb
)
2241 return call_int_hook(socket_sock_rcv_skb
, 0, sk
, skb
);
2243 EXPORT_SYMBOL(security_sock_rcv_skb
);
2245 int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2246 int __user
*optlen
, unsigned len
)
2248 return call_int_hook(socket_getpeersec_stream
, -ENOPROTOOPT
, sock
,
2249 optval
, optlen
, len
);
2252 int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
)
2254 return call_int_hook(socket_getpeersec_dgram
, -ENOPROTOOPT
, sock
,
2257 EXPORT_SYMBOL(security_socket_getpeersec_dgram
);
2259 int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
)
2261 return call_int_hook(sk_alloc_security
, 0, sk
, family
, priority
);
2264 void security_sk_free(struct sock
*sk
)
2266 call_void_hook(sk_free_security
, sk
);
2269 void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
)
2271 call_void_hook(sk_clone_security
, sk
, newsk
);
2273 EXPORT_SYMBOL(security_sk_clone
);
2275 void security_sk_classify_flow(struct sock
*sk
, struct flowi_common
*flic
)
2277 call_void_hook(sk_getsecid
, sk
, &flic
->flowic_secid
);
2279 EXPORT_SYMBOL(security_sk_classify_flow
);
2281 void security_req_classify_flow(const struct request_sock
*req
,
2282 struct flowi_common
*flic
)
2284 call_void_hook(req_classify_flow
, req
, flic
);
2286 EXPORT_SYMBOL(security_req_classify_flow
);
2288 void security_sock_graft(struct sock
*sk
, struct socket
*parent
)
2290 call_void_hook(sock_graft
, sk
, parent
);
2292 EXPORT_SYMBOL(security_sock_graft
);
2294 int security_inet_conn_request(const struct sock
*sk
,
2295 struct sk_buff
*skb
, struct request_sock
*req
)
2297 return call_int_hook(inet_conn_request
, 0, sk
, skb
, req
);
2299 EXPORT_SYMBOL(security_inet_conn_request
);
2301 void security_inet_csk_clone(struct sock
*newsk
,
2302 const struct request_sock
*req
)
2304 call_void_hook(inet_csk_clone
, newsk
, req
);
2307 void security_inet_conn_established(struct sock
*sk
,
2308 struct sk_buff
*skb
)
2310 call_void_hook(inet_conn_established
, sk
, skb
);
2312 EXPORT_SYMBOL(security_inet_conn_established
);
2314 int security_secmark_relabel_packet(u32 secid
)
2316 return call_int_hook(secmark_relabel_packet
, 0, secid
);
2318 EXPORT_SYMBOL(security_secmark_relabel_packet
);
2320 void security_secmark_refcount_inc(void)
2322 call_void_hook(secmark_refcount_inc
);
2324 EXPORT_SYMBOL(security_secmark_refcount_inc
);
2326 void security_secmark_refcount_dec(void)
2328 call_void_hook(secmark_refcount_dec
);
2330 EXPORT_SYMBOL(security_secmark_refcount_dec
);
2332 int security_tun_dev_alloc_security(void **security
)
2334 return call_int_hook(tun_dev_alloc_security
, 0, security
);
2336 EXPORT_SYMBOL(security_tun_dev_alloc_security
);
2338 void security_tun_dev_free_security(void *security
)
2340 call_void_hook(tun_dev_free_security
, security
);
2342 EXPORT_SYMBOL(security_tun_dev_free_security
);
2344 int security_tun_dev_create(void)
2346 return call_int_hook(tun_dev_create
, 0);
2348 EXPORT_SYMBOL(security_tun_dev_create
);
2350 int security_tun_dev_attach_queue(void *security
)
2352 return call_int_hook(tun_dev_attach_queue
, 0, security
);
2354 EXPORT_SYMBOL(security_tun_dev_attach_queue
);
2356 int security_tun_dev_attach(struct sock
*sk
, void *security
)
2358 return call_int_hook(tun_dev_attach
, 0, sk
, security
);
2360 EXPORT_SYMBOL(security_tun_dev_attach
);
2362 int security_tun_dev_open(void *security
)
2364 return call_int_hook(tun_dev_open
, 0, security
);
2366 EXPORT_SYMBOL(security_tun_dev_open
);
2368 int security_sctp_assoc_request(struct sctp_endpoint
*ep
, struct sk_buff
*skb
)
2370 return call_int_hook(sctp_assoc_request
, 0, ep
, skb
);
2372 EXPORT_SYMBOL(security_sctp_assoc_request
);
2374 int security_sctp_bind_connect(struct sock
*sk
, int optname
,
2375 struct sockaddr
*address
, int addrlen
)
2377 return call_int_hook(sctp_bind_connect
, 0, sk
, optname
,
2380 EXPORT_SYMBOL(security_sctp_bind_connect
);
2382 void security_sctp_sk_clone(struct sctp_endpoint
*ep
, struct sock
*sk
,
2385 call_void_hook(sctp_sk_clone
, ep
, sk
, newsk
);
2387 EXPORT_SYMBOL(security_sctp_sk_clone
);
2389 #endif /* CONFIG_SECURITY_NETWORK */
2391 #ifdef CONFIG_SECURITY_INFINIBAND
2393 int security_ib_pkey_access(void *sec
, u64 subnet_prefix
, u16 pkey
)
2395 return call_int_hook(ib_pkey_access
, 0, sec
, subnet_prefix
, pkey
);
2397 EXPORT_SYMBOL(security_ib_pkey_access
);
2399 int security_ib_endport_manage_subnet(void *sec
, const char *dev_name
, u8 port_num
)
2401 return call_int_hook(ib_endport_manage_subnet
, 0, sec
, dev_name
, port_num
);
2403 EXPORT_SYMBOL(security_ib_endport_manage_subnet
);
2405 int security_ib_alloc_security(void **sec
)
2407 return call_int_hook(ib_alloc_security
, 0, sec
);
2409 EXPORT_SYMBOL(security_ib_alloc_security
);
2411 void security_ib_free_security(void *sec
)
2413 call_void_hook(ib_free_security
, sec
);
2415 EXPORT_SYMBOL(security_ib_free_security
);
2416 #endif /* CONFIG_SECURITY_INFINIBAND */
2418 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2420 int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
,
2421 struct xfrm_user_sec_ctx
*sec_ctx
,
2424 return call_int_hook(xfrm_policy_alloc_security
, 0, ctxp
, sec_ctx
, gfp
);
2426 EXPORT_SYMBOL(security_xfrm_policy_alloc
);
2428 int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old_ctx
,
2429 struct xfrm_sec_ctx
**new_ctxp
)
2431 return call_int_hook(xfrm_policy_clone_security
, 0, old_ctx
, new_ctxp
);
2434 void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
)
2436 call_void_hook(xfrm_policy_free_security
, ctx
);
2438 EXPORT_SYMBOL(security_xfrm_policy_free
);
2440 int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
)
2442 return call_int_hook(xfrm_policy_delete_security
, 0, ctx
);
2445 int security_xfrm_state_alloc(struct xfrm_state
*x
,
2446 struct xfrm_user_sec_ctx
*sec_ctx
)
2448 return call_int_hook(xfrm_state_alloc
, 0, x
, sec_ctx
);
2450 EXPORT_SYMBOL(security_xfrm_state_alloc
);
2452 int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2453 struct xfrm_sec_ctx
*polsec
, u32 secid
)
2455 return call_int_hook(xfrm_state_alloc_acquire
, 0, x
, polsec
, secid
);
2458 int security_xfrm_state_delete(struct xfrm_state
*x
)
2460 return call_int_hook(xfrm_state_delete_security
, 0, x
);
2462 EXPORT_SYMBOL(security_xfrm_state_delete
);
2464 void security_xfrm_state_free(struct xfrm_state
*x
)
2466 call_void_hook(xfrm_state_free_security
, x
);
2469 int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
, u8 dir
)
2471 return call_int_hook(xfrm_policy_lookup
, 0, ctx
, fl_secid
, dir
);
2474 int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2475 struct xfrm_policy
*xp
,
2476 const struct flowi_common
*flic
)
2478 struct security_hook_list
*hp
;
2479 int rc
= LSM_RET_DEFAULT(xfrm_state_pol_flow_match
);
2482 * Since this function is expected to return 0 or 1, the judgment
2483 * becomes difficult if multiple LSMs supply this call. Fortunately,
2484 * we can use the first LSM's judgment because currently only SELinux
2485 * supplies this call.
2487 * For speed optimization, we explicitly break the loop rather than
2490 hlist_for_each_entry(hp
, &security_hook_heads
.xfrm_state_pol_flow_match
,
2492 rc
= hp
->hook
.xfrm_state_pol_flow_match(x
, xp
, flic
);
2498 int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
)
2500 return call_int_hook(xfrm_decode_session
, 0, skb
, secid
, 1);
2503 void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi_common
*flic
)
2505 int rc
= call_int_hook(xfrm_decode_session
, 0, skb
, &flic
->flowic_secid
,
2510 EXPORT_SYMBOL(security_skb_classify_flow
);
2512 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2516 int security_key_alloc(struct key
*key
, const struct cred
*cred
,
2517 unsigned long flags
)
2519 return call_int_hook(key_alloc
, 0, key
, cred
, flags
);
2522 void security_key_free(struct key
*key
)
2524 call_void_hook(key_free
, key
);
2527 int security_key_permission(key_ref_t key_ref
, const struct cred
*cred
,
2528 enum key_need_perm need_perm
)
2530 return call_int_hook(key_permission
, 0, key_ref
, cred
, need_perm
);
2533 int security_key_getsecurity(struct key
*key
, char **_buffer
)
2536 return call_int_hook(key_getsecurity
, 0, key
, _buffer
);
2539 #endif /* CONFIG_KEYS */
2543 int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
, void **lsmrule
)
2545 return call_int_hook(audit_rule_init
, 0, field
, op
, rulestr
, lsmrule
);
2548 int security_audit_rule_known(struct audit_krule
*krule
)
2550 return call_int_hook(audit_rule_known
, 0, krule
);
2553 void security_audit_rule_free(void *lsmrule
)
2555 call_void_hook(audit_rule_free
, lsmrule
);
2558 int security_audit_rule_match(u32 secid
, u32 field
, u32 op
, void *lsmrule
)
2560 return call_int_hook(audit_rule_match
, 0, secid
, field
, op
, lsmrule
);
2562 #endif /* CONFIG_AUDIT */
2564 #ifdef CONFIG_BPF_SYSCALL
2565 int security_bpf(int cmd
, union bpf_attr
*attr
, unsigned int size
)
2567 return call_int_hook(bpf
, 0, cmd
, attr
, size
);
2569 int security_bpf_map(struct bpf_map
*map
, fmode_t fmode
)
2571 return call_int_hook(bpf_map
, 0, map
, fmode
);
2573 int security_bpf_prog(struct bpf_prog
*prog
)
2575 return call_int_hook(bpf_prog
, 0, prog
);
2577 int security_bpf_map_alloc(struct bpf_map
*map
)
2579 return call_int_hook(bpf_map_alloc_security
, 0, map
);
2581 int security_bpf_prog_alloc(struct bpf_prog_aux
*aux
)
2583 return call_int_hook(bpf_prog_alloc_security
, 0, aux
);
2585 void security_bpf_map_free(struct bpf_map
*map
)
2587 call_void_hook(bpf_map_free_security
, map
);
2589 void security_bpf_prog_free(struct bpf_prog_aux
*aux
)
2591 call_void_hook(bpf_prog_free_security
, aux
);
2593 #endif /* CONFIG_BPF_SYSCALL */
2595 int security_locked_down(enum lockdown_reason what
)
2597 return call_int_hook(locked_down
, 0, what
);
2599 EXPORT_SYMBOL(security_locked_down
);
2601 #ifdef CONFIG_PERF_EVENTS
2602 int security_perf_event_open(struct perf_event_attr
*attr
, int type
)
2604 return call_int_hook(perf_event_open
, 0, attr
, type
);
2607 int security_perf_event_alloc(struct perf_event
*event
)
2609 return call_int_hook(perf_event_alloc
, 0, event
);
2612 void security_perf_event_free(struct perf_event
*event
)
2614 call_void_hook(perf_event_free
, event
);
2617 int security_perf_event_read(struct perf_event
*event
)
2619 return call_int_hook(perf_event_read
, 0, event
);
2622 int security_perf_event_write(struct perf_event
*event
)
2624 return call_int_hook(perf_event_write
, 0, event
);
2626 #endif /* CONFIG_PERF_EVENTS */