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_BPF_WRITE_USER
] = "use of bpf to write user RAM",
62 [LOCKDOWN_INTEGRITY_MAX
] = "integrity",
63 [LOCKDOWN_KCORE
] = "/proc/kcore access",
64 [LOCKDOWN_KPROBES
] = "use of kprobes",
65 [LOCKDOWN_BPF_READ_KERNEL
] = "use of bpf to read kernel RAM",
66 [LOCKDOWN_PERF
] = "unsafe use of perf",
67 [LOCKDOWN_TRACEFS
] = "use of tracefs",
68 [LOCKDOWN_XMON_RW
] = "xmon read and write access",
69 [LOCKDOWN_XFRM_SECRET
] = "xfrm SA secret",
70 [LOCKDOWN_CONFIDENTIALITY_MAX
] = "confidentiality",
73 struct security_hook_heads security_hook_heads __lsm_ro_after_init
;
74 static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain
);
76 static struct kmem_cache
*lsm_file_cache
;
77 static struct kmem_cache
*lsm_inode_cache
;
80 static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init
;
82 /* Boot-time LSM user choice */
83 static __initdata
const char *chosen_lsm_order
;
84 static __initdata
const char *chosen_major_lsm
;
86 static __initconst
const char * const builtin_lsm_order
= CONFIG_LSM
;
88 /* Ordered list of LSMs to initialize. */
89 static __initdata
struct lsm_info
**ordered_lsms
;
90 static __initdata
struct lsm_info
*exclusive
;
92 static __initdata
bool debug
;
93 #define init_debug(...) \
96 pr_info(__VA_ARGS__); \
99 static bool __init
is_enabled(struct lsm_info
*lsm
)
104 return *lsm
->enabled
;
107 /* Mark an LSM's enabled flag. */
108 static int lsm_enabled_true __initdata
= 1;
109 static int lsm_enabled_false __initdata
= 0;
110 static void __init
set_enabled(struct lsm_info
*lsm
, bool enabled
)
113 * When an LSM hasn't configured an enable variable, we can use
114 * a hard-coded location for storing the default enabled state.
118 lsm
->enabled
= &lsm_enabled_true
;
120 lsm
->enabled
= &lsm_enabled_false
;
121 } else if (lsm
->enabled
== &lsm_enabled_true
) {
123 lsm
->enabled
= &lsm_enabled_false
;
124 } else if (lsm
->enabled
== &lsm_enabled_false
) {
126 lsm
->enabled
= &lsm_enabled_true
;
128 *lsm
->enabled
= enabled
;
132 /* Is an LSM already listed in the ordered LSMs list? */
133 static bool __init
exists_ordered_lsm(struct lsm_info
*lsm
)
135 struct lsm_info
**check
;
137 for (check
= ordered_lsms
; *check
; check
++)
144 /* Append an LSM to the list of ordered LSMs to initialize. */
145 static int last_lsm __initdata
;
146 static void __init
append_ordered_lsm(struct lsm_info
*lsm
, const char *from
)
148 /* Ignore duplicate selections. */
149 if (exists_ordered_lsm(lsm
))
152 if (WARN(last_lsm
== LSM_COUNT
, "%s: out of LSM slots!?\n", from
))
155 /* Enable this LSM, if it is not already set. */
157 lsm
->enabled
= &lsm_enabled_true
;
158 ordered_lsms
[last_lsm
++] = lsm
;
160 init_debug("%s ordering: %s (%sabled)\n", from
, lsm
->name
,
161 is_enabled(lsm
) ? "en" : "dis");
164 /* Is an LSM allowed to be initialized? */
165 static bool __init
lsm_allowed(struct lsm_info
*lsm
)
167 /* Skip if the LSM is disabled. */
168 if (!is_enabled(lsm
))
171 /* Not allowed if another exclusive LSM already initialized. */
172 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && exclusive
) {
173 init_debug("exclusive disabled: %s\n", lsm
->name
);
180 static void __init
lsm_set_blob_size(int *need
, int *lbs
)
191 static void __init
lsm_set_blob_sizes(struct lsm_blob_sizes
*needed
)
196 lsm_set_blob_size(&needed
->lbs_cred
, &blob_sizes
.lbs_cred
);
197 lsm_set_blob_size(&needed
->lbs_file
, &blob_sizes
.lbs_file
);
199 * The inode blob gets an rcu_head in addition to
200 * what the modules might need.
202 if (needed
->lbs_inode
&& blob_sizes
.lbs_inode
== 0)
203 blob_sizes
.lbs_inode
= sizeof(struct rcu_head
);
204 lsm_set_blob_size(&needed
->lbs_inode
, &blob_sizes
.lbs_inode
);
205 lsm_set_blob_size(&needed
->lbs_ipc
, &blob_sizes
.lbs_ipc
);
206 lsm_set_blob_size(&needed
->lbs_msg_msg
, &blob_sizes
.lbs_msg_msg
);
207 lsm_set_blob_size(&needed
->lbs_superblock
, &blob_sizes
.lbs_superblock
);
208 lsm_set_blob_size(&needed
->lbs_task
, &blob_sizes
.lbs_task
);
211 /* Prepare LSM for initialization. */
212 static void __init
prepare_lsm(struct lsm_info
*lsm
)
214 int enabled
= lsm_allowed(lsm
);
216 /* Record enablement (to handle any following exclusive LSMs). */
217 set_enabled(lsm
, enabled
);
219 /* If enabled, do pre-initialization work. */
221 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && !exclusive
) {
223 init_debug("exclusive chosen: %s\n", lsm
->name
);
226 lsm_set_blob_sizes(lsm
->blobs
);
230 /* Initialize a given LSM, if it is enabled. */
231 static void __init
initialize_lsm(struct lsm_info
*lsm
)
233 if (is_enabled(lsm
)) {
236 init_debug("initializing %s\n", lsm
->name
);
238 WARN(ret
, "%s failed to initialize: %d\n", lsm
->name
, ret
);
242 /* Populate ordered LSMs list from comma-separated LSM name list. */
243 static void __init
ordered_lsm_parse(const char *order
, const char *origin
)
245 struct lsm_info
*lsm
;
246 char *sep
, *name
, *next
;
248 /* LSM_ORDER_FIRST is always first. */
249 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
250 if (lsm
->order
== LSM_ORDER_FIRST
)
251 append_ordered_lsm(lsm
, "first");
254 /* Process "security=", if given. */
255 if (chosen_major_lsm
) {
256 struct lsm_info
*major
;
259 * To match the original "security=" behavior, this
260 * explicitly does NOT fallback to another Legacy Major
261 * if the selected one was separately disabled: disable
262 * all non-matching Legacy Major LSMs.
264 for (major
= __start_lsm_info
; major
< __end_lsm_info
;
266 if ((major
->flags
& LSM_FLAG_LEGACY_MAJOR
) &&
267 strcmp(major
->name
, chosen_major_lsm
) != 0) {
268 set_enabled(major
, false);
269 init_debug("security=%s disabled: %s\n",
270 chosen_major_lsm
, major
->name
);
275 sep
= kstrdup(order
, GFP_KERNEL
);
277 /* Walk the list, looking for matching LSMs. */
278 while ((name
= strsep(&next
, ",")) != NULL
) {
281 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
282 if (lsm
->order
== LSM_ORDER_MUTABLE
&&
283 strcmp(lsm
->name
, name
) == 0) {
284 append_ordered_lsm(lsm
, origin
);
290 init_debug("%s ignored: %s\n", origin
, name
);
293 /* Process "security=", if given. */
294 if (chosen_major_lsm
) {
295 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
296 if (exists_ordered_lsm(lsm
))
298 if (strcmp(lsm
->name
, chosen_major_lsm
) == 0)
299 append_ordered_lsm(lsm
, "security=");
303 /* Disable all LSMs not in the ordered list. */
304 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
305 if (exists_ordered_lsm(lsm
))
307 set_enabled(lsm
, false);
308 init_debug("%s disabled: %s\n", origin
, lsm
->name
);
314 static void __init
lsm_early_cred(struct cred
*cred
);
315 static void __init
lsm_early_task(struct task_struct
*task
);
317 static int lsm_append(const char *new, char **result
);
319 static void __init
ordered_lsm_init(void)
321 struct lsm_info
**lsm
;
323 ordered_lsms
= kcalloc(LSM_COUNT
+ 1, sizeof(*ordered_lsms
),
326 if (chosen_lsm_order
) {
327 if (chosen_major_lsm
) {
328 pr_info("security= is ignored because it is superseded by lsm=\n");
329 chosen_major_lsm
= NULL
;
331 ordered_lsm_parse(chosen_lsm_order
, "cmdline");
333 ordered_lsm_parse(builtin_lsm_order
, "builtin");
335 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
338 init_debug("cred blob size = %d\n", blob_sizes
.lbs_cred
);
339 init_debug("file blob size = %d\n", blob_sizes
.lbs_file
);
340 init_debug("inode blob size = %d\n", blob_sizes
.lbs_inode
);
341 init_debug("ipc blob size = %d\n", blob_sizes
.lbs_ipc
);
342 init_debug("msg_msg blob size = %d\n", blob_sizes
.lbs_msg_msg
);
343 init_debug("superblock blob size = %d\n", blob_sizes
.lbs_superblock
);
344 init_debug("task blob size = %d\n", blob_sizes
.lbs_task
);
347 * Create any kmem_caches needed for blobs
349 if (blob_sizes
.lbs_file
)
350 lsm_file_cache
= kmem_cache_create("lsm_file_cache",
351 blob_sizes
.lbs_file
, 0,
353 if (blob_sizes
.lbs_inode
)
354 lsm_inode_cache
= kmem_cache_create("lsm_inode_cache",
355 blob_sizes
.lbs_inode
, 0,
358 lsm_early_cred((struct cred
*) current
->cred
);
359 lsm_early_task(current
);
360 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
361 initialize_lsm(*lsm
);
366 int __init
early_security_init(void)
369 struct hlist_head
*list
= (struct hlist_head
*) &security_hook_heads
;
370 struct lsm_info
*lsm
;
372 for (i
= 0; i
< sizeof(security_hook_heads
) / sizeof(struct hlist_head
);
374 INIT_HLIST_HEAD(&list
[i
]);
376 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
378 lsm
->enabled
= &lsm_enabled_true
;
387 * security_init - initializes the security framework
389 * This should be called early in the kernel initialization sequence.
391 int __init
security_init(void)
393 struct lsm_info
*lsm
;
395 pr_info("Security Framework initializing\n");
398 * Append the names of the early LSM modules now that kmalloc() is
401 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
403 lsm_append(lsm
->name
, &lsm_names
);
406 /* Load LSMs in specified order. */
412 /* Save user chosen LSM */
413 static int __init
choose_major_lsm(char *str
)
415 chosen_major_lsm
= str
;
418 __setup("security=", choose_major_lsm
);
420 /* Explicitly choose LSM initialization order. */
421 static int __init
choose_lsm_order(char *str
)
423 chosen_lsm_order
= str
;
426 __setup("lsm=", choose_lsm_order
);
428 /* Enable LSM order debugging. */
429 static int __init
enable_debug(char *str
)
434 __setup("lsm.debug", enable_debug
);
436 static bool match_last_lsm(const char *list
, const char *lsm
)
440 if (WARN_ON(!list
|| !lsm
))
442 last
= strrchr(list
, ',');
444 /* Pass the comma, strcmp() will check for '\0' */
448 return !strcmp(last
, lsm
);
451 static int lsm_append(const char *new, char **result
)
455 if (*result
== NULL
) {
456 *result
= kstrdup(new, GFP_KERNEL
);
460 /* Check if it is the last registered name */
461 if (match_last_lsm(*result
, new))
463 cp
= kasprintf(GFP_KERNEL
, "%s,%s", *result
, new);
473 * security_add_hooks - Add a modules hooks to the hook lists.
474 * @hooks: the hooks to add
475 * @count: the number of hooks to add
476 * @lsm: the name of the security module
478 * Each LSM has to register its hooks with the infrastructure.
480 void __init
security_add_hooks(struct security_hook_list
*hooks
, int count
,
485 for (i
= 0; i
< count
; i
++) {
487 hlist_add_tail_rcu(&hooks
[i
].list
, hooks
[i
].head
);
491 * Don't try to append during early_security_init(), we'll come back
492 * and fix this up afterwards.
494 if (slab_is_available()) {
495 if (lsm_append(lsm
, &lsm_names
) < 0)
496 panic("%s - Cannot get early memory.\n", __func__
);
500 int call_blocking_lsm_notifier(enum lsm_event event
, void *data
)
502 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain
,
505 EXPORT_SYMBOL(call_blocking_lsm_notifier
);
507 int register_blocking_lsm_notifier(struct notifier_block
*nb
)
509 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain
,
512 EXPORT_SYMBOL(register_blocking_lsm_notifier
);
514 int unregister_blocking_lsm_notifier(struct notifier_block
*nb
)
516 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain
,
519 EXPORT_SYMBOL(unregister_blocking_lsm_notifier
);
522 * lsm_cred_alloc - allocate a composite cred blob
523 * @cred: the cred that needs a blob
524 * @gfp: allocation type
526 * Allocate the cred blob for all the modules
528 * Returns 0, or -ENOMEM if memory can't be allocated.
530 static int lsm_cred_alloc(struct cred
*cred
, gfp_t gfp
)
532 if (blob_sizes
.lbs_cred
== 0) {
533 cred
->security
= NULL
;
537 cred
->security
= kzalloc(blob_sizes
.lbs_cred
, gfp
);
538 if (cred
->security
== NULL
)
544 * lsm_early_cred - during initialization allocate a composite cred blob
545 * @cred: the cred that needs a blob
547 * Allocate the cred blob for all the modules
549 static void __init
lsm_early_cred(struct cred
*cred
)
551 int rc
= lsm_cred_alloc(cred
, GFP_KERNEL
);
554 panic("%s: Early cred alloc failed.\n", __func__
);
558 * lsm_file_alloc - allocate a composite file blob
559 * @file: the file that needs a blob
561 * Allocate the file blob for all the modules
563 * Returns 0, or -ENOMEM if memory can't be allocated.
565 static int lsm_file_alloc(struct file
*file
)
567 if (!lsm_file_cache
) {
568 file
->f_security
= NULL
;
572 file
->f_security
= kmem_cache_zalloc(lsm_file_cache
, GFP_KERNEL
);
573 if (file
->f_security
== NULL
)
579 * lsm_inode_alloc - allocate a composite inode blob
580 * @inode: the inode that needs a blob
582 * Allocate the inode blob for all the modules
584 * Returns 0, or -ENOMEM if memory can't be allocated.
586 int lsm_inode_alloc(struct inode
*inode
)
588 if (!lsm_inode_cache
) {
589 inode
->i_security
= NULL
;
593 inode
->i_security
= kmem_cache_zalloc(lsm_inode_cache
, GFP_NOFS
);
594 if (inode
->i_security
== NULL
)
600 * lsm_task_alloc - allocate a composite task blob
601 * @task: the task that needs a blob
603 * Allocate the task blob for all the modules
605 * Returns 0, or -ENOMEM if memory can't be allocated.
607 static int lsm_task_alloc(struct task_struct
*task
)
609 if (blob_sizes
.lbs_task
== 0) {
610 task
->security
= NULL
;
614 task
->security
= kzalloc(blob_sizes
.lbs_task
, GFP_KERNEL
);
615 if (task
->security
== NULL
)
621 * lsm_ipc_alloc - allocate a composite ipc blob
622 * @kip: the ipc that needs a blob
624 * Allocate the ipc blob for all the modules
626 * Returns 0, or -ENOMEM if memory can't be allocated.
628 static int lsm_ipc_alloc(struct kern_ipc_perm
*kip
)
630 if (blob_sizes
.lbs_ipc
== 0) {
631 kip
->security
= NULL
;
635 kip
->security
= kzalloc(blob_sizes
.lbs_ipc
, GFP_KERNEL
);
636 if (kip
->security
== NULL
)
642 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
643 * @mp: the msg_msg that needs a blob
645 * Allocate the ipc blob for all the modules
647 * Returns 0, or -ENOMEM if memory can't be allocated.
649 static int lsm_msg_msg_alloc(struct msg_msg
*mp
)
651 if (blob_sizes
.lbs_msg_msg
== 0) {
656 mp
->security
= kzalloc(blob_sizes
.lbs_msg_msg
, GFP_KERNEL
);
657 if (mp
->security
== NULL
)
663 * lsm_early_task - during initialization allocate a composite task blob
664 * @task: the task that needs a blob
666 * Allocate the task blob for all the modules
668 static void __init
lsm_early_task(struct task_struct
*task
)
670 int rc
= lsm_task_alloc(task
);
673 panic("%s: Early task alloc failed.\n", __func__
);
677 * lsm_superblock_alloc - allocate a composite superblock blob
678 * @sb: the superblock that needs a blob
680 * Allocate the superblock blob for all the modules
682 * Returns 0, or -ENOMEM if memory can't be allocated.
684 static int lsm_superblock_alloc(struct super_block
*sb
)
686 if (blob_sizes
.lbs_superblock
== 0) {
687 sb
->s_security
= NULL
;
691 sb
->s_security
= kzalloc(blob_sizes
.lbs_superblock
, GFP_KERNEL
);
692 if (sb
->s_security
== NULL
)
698 * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
699 * can be accessed with:
701 * LSM_RET_DEFAULT(<hook_name>)
703 * The macros below define static constants for the default value of each
706 #define LSM_RET_DEFAULT(NAME) (NAME##_default)
707 #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
708 #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
709 static const int LSM_RET_DEFAULT(NAME) = (DEFAULT);
710 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
711 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
713 #include <linux/lsm_hook_defs.h>
717 * Hook list operation macros.
720 * This is a hook that does not return a value.
723 * This is a hook that returns a value.
726 #define call_void_hook(FUNC, ...) \
728 struct security_hook_list *P; \
730 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
731 P->hook.FUNC(__VA_ARGS__); \
734 #define call_int_hook(FUNC, IRC, ...) ({ \
737 struct security_hook_list *P; \
739 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
740 RC = P->hook.FUNC(__VA_ARGS__); \
748 /* Security operations */
750 int security_binder_set_context_mgr(struct task_struct
*mgr
)
752 return call_int_hook(binder_set_context_mgr
, 0, mgr
);
755 int security_binder_transaction(struct task_struct
*from
,
756 struct task_struct
*to
)
758 return call_int_hook(binder_transaction
, 0, from
, to
);
761 int security_binder_transfer_binder(struct task_struct
*from
,
762 struct task_struct
*to
)
764 return call_int_hook(binder_transfer_binder
, 0, from
, to
);
767 int security_binder_transfer_file(struct task_struct
*from
,
768 struct task_struct
*to
, struct file
*file
)
770 return call_int_hook(binder_transfer_file
, 0, from
, to
, file
);
773 int security_ptrace_access_check(struct task_struct
*child
, unsigned int mode
)
775 return call_int_hook(ptrace_access_check
, 0, child
, mode
);
778 int security_ptrace_traceme(struct task_struct
*parent
)
780 return call_int_hook(ptrace_traceme
, 0, parent
);
783 int security_capget(struct task_struct
*target
,
784 kernel_cap_t
*effective
,
785 kernel_cap_t
*inheritable
,
786 kernel_cap_t
*permitted
)
788 return call_int_hook(capget
, 0, target
,
789 effective
, inheritable
, permitted
);
792 int security_capset(struct cred
*new, const struct cred
*old
,
793 const kernel_cap_t
*effective
,
794 const kernel_cap_t
*inheritable
,
795 const kernel_cap_t
*permitted
)
797 return call_int_hook(capset
, 0, new, old
,
798 effective
, inheritable
, permitted
);
801 int security_capable(const struct cred
*cred
,
802 struct user_namespace
*ns
,
806 return call_int_hook(capable
, 0, cred
, ns
, cap
, opts
);
809 int security_quotactl(int cmds
, int type
, int id
, struct super_block
*sb
)
811 return call_int_hook(quotactl
, 0, cmds
, type
, id
, sb
);
814 int security_quota_on(struct dentry
*dentry
)
816 return call_int_hook(quota_on
, 0, dentry
);
819 int security_syslog(int type
)
821 return call_int_hook(syslog
, 0, type
);
824 int security_settime64(const struct timespec64
*ts
, const struct timezone
*tz
)
826 return call_int_hook(settime
, 0, ts
, tz
);
829 int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
)
831 struct security_hook_list
*hp
;
832 int cap_sys_admin
= 1;
836 * The module will respond with a positive value if
837 * it thinks the __vm_enough_memory() call should be
838 * made with the cap_sys_admin set. If all of the modules
839 * agree that it should be set it will. If any module
840 * thinks it should not be set it won't.
842 hlist_for_each_entry(hp
, &security_hook_heads
.vm_enough_memory
, list
) {
843 rc
= hp
->hook
.vm_enough_memory(mm
, pages
);
849 return __vm_enough_memory(mm
, pages
, cap_sys_admin
);
852 int security_bprm_creds_for_exec(struct linux_binprm
*bprm
)
854 return call_int_hook(bprm_creds_for_exec
, 0, bprm
);
857 int security_bprm_creds_from_file(struct linux_binprm
*bprm
, struct file
*file
)
859 return call_int_hook(bprm_creds_from_file
, 0, bprm
, file
);
862 int security_bprm_check(struct linux_binprm
*bprm
)
866 ret
= call_int_hook(bprm_check_security
, 0, bprm
);
869 return ima_bprm_check(bprm
);
872 void security_bprm_committing_creds(struct linux_binprm
*bprm
)
874 call_void_hook(bprm_committing_creds
, bprm
);
877 void security_bprm_committed_creds(struct linux_binprm
*bprm
)
879 call_void_hook(bprm_committed_creds
, bprm
);
882 int security_fs_context_dup(struct fs_context
*fc
, struct fs_context
*src_fc
)
884 return call_int_hook(fs_context_dup
, 0, fc
, src_fc
);
887 int security_fs_context_parse_param(struct fs_context
*fc
, struct fs_parameter
*param
)
889 return call_int_hook(fs_context_parse_param
, -ENOPARAM
, fc
, param
);
892 int security_sb_alloc(struct super_block
*sb
)
894 int rc
= lsm_superblock_alloc(sb
);
898 rc
= call_int_hook(sb_alloc_security
, 0, sb
);
900 security_sb_free(sb
);
904 void security_sb_delete(struct super_block
*sb
)
906 call_void_hook(sb_delete
, sb
);
909 void security_sb_free(struct super_block
*sb
)
911 call_void_hook(sb_free_security
, sb
);
912 kfree(sb
->s_security
);
913 sb
->s_security
= NULL
;
916 void security_free_mnt_opts(void **mnt_opts
)
920 call_void_hook(sb_free_mnt_opts
, *mnt_opts
);
923 EXPORT_SYMBOL(security_free_mnt_opts
);
925 int security_sb_eat_lsm_opts(char *options
, void **mnt_opts
)
927 return call_int_hook(sb_eat_lsm_opts
, 0, options
, mnt_opts
);
929 EXPORT_SYMBOL(security_sb_eat_lsm_opts
);
931 int security_sb_mnt_opts_compat(struct super_block
*sb
,
934 return call_int_hook(sb_mnt_opts_compat
, 0, sb
, mnt_opts
);
936 EXPORT_SYMBOL(security_sb_mnt_opts_compat
);
938 int security_sb_remount(struct super_block
*sb
,
941 return call_int_hook(sb_remount
, 0, sb
, mnt_opts
);
943 EXPORT_SYMBOL(security_sb_remount
);
945 int security_sb_kern_mount(struct super_block
*sb
)
947 return call_int_hook(sb_kern_mount
, 0, sb
);
950 int security_sb_show_options(struct seq_file
*m
, struct super_block
*sb
)
952 return call_int_hook(sb_show_options
, 0, m
, sb
);
955 int security_sb_statfs(struct dentry
*dentry
)
957 return call_int_hook(sb_statfs
, 0, dentry
);
960 int security_sb_mount(const char *dev_name
, const struct path
*path
,
961 const char *type
, unsigned long flags
, void *data
)
963 return call_int_hook(sb_mount
, 0, dev_name
, path
, type
, flags
, data
);
966 int security_sb_umount(struct vfsmount
*mnt
, int flags
)
968 return call_int_hook(sb_umount
, 0, mnt
, flags
);
971 int security_sb_pivotroot(const struct path
*old_path
, const struct path
*new_path
)
973 return call_int_hook(sb_pivotroot
, 0, old_path
, new_path
);
976 int security_sb_set_mnt_opts(struct super_block
*sb
,
978 unsigned long kern_flags
,
979 unsigned long *set_kern_flags
)
981 return call_int_hook(sb_set_mnt_opts
,
982 mnt_opts
? -EOPNOTSUPP
: 0, sb
,
983 mnt_opts
, kern_flags
, set_kern_flags
);
985 EXPORT_SYMBOL(security_sb_set_mnt_opts
);
987 int security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
988 struct super_block
*newsb
,
989 unsigned long kern_flags
,
990 unsigned long *set_kern_flags
)
992 return call_int_hook(sb_clone_mnt_opts
, 0, oldsb
, newsb
,
993 kern_flags
, set_kern_flags
);
995 EXPORT_SYMBOL(security_sb_clone_mnt_opts
);
997 int security_add_mnt_opt(const char *option
, const char *val
, int len
,
1000 return call_int_hook(sb_add_mnt_opt
, -EINVAL
,
1001 option
, val
, len
, mnt_opts
);
1003 EXPORT_SYMBOL(security_add_mnt_opt
);
1005 int security_move_mount(const struct path
*from_path
, const struct path
*to_path
)
1007 return call_int_hook(move_mount
, 0, from_path
, to_path
);
1010 int security_path_notify(const struct path
*path
, u64 mask
,
1011 unsigned int obj_type
)
1013 return call_int_hook(path_notify
, 0, path
, mask
, obj_type
);
1016 int security_inode_alloc(struct inode
*inode
)
1018 int rc
= lsm_inode_alloc(inode
);
1022 rc
= call_int_hook(inode_alloc_security
, 0, inode
);
1024 security_inode_free(inode
);
1028 static void inode_free_by_rcu(struct rcu_head
*head
)
1031 * The rcu head is at the start of the inode blob
1033 kmem_cache_free(lsm_inode_cache
, head
);
1036 void security_inode_free(struct inode
*inode
)
1038 integrity_inode_free(inode
);
1039 call_void_hook(inode_free_security
, inode
);
1041 * The inode may still be referenced in a path walk and
1042 * a call to security_inode_permission() can be made
1043 * after inode_free_security() is called. Ideally, the VFS
1044 * wouldn't do this, but fixing that is a much harder
1045 * job. For now, simply free the i_security via RCU, and
1046 * leave the current inode->i_security pointer intact.
1047 * The inode will be freed after the RCU grace period too.
1049 if (inode
->i_security
)
1050 call_rcu((struct rcu_head
*)inode
->i_security
,
1054 int security_dentry_init_security(struct dentry
*dentry
, int mode
,
1055 const struct qstr
*name
, void **ctx
,
1058 return call_int_hook(dentry_init_security
, -EOPNOTSUPP
, dentry
, mode
,
1061 EXPORT_SYMBOL(security_dentry_init_security
);
1063 int security_dentry_create_files_as(struct dentry
*dentry
, int mode
,
1065 const struct cred
*old
, struct cred
*new)
1067 return call_int_hook(dentry_create_files_as
, 0, dentry
, mode
,
1070 EXPORT_SYMBOL(security_dentry_create_files_as
);
1072 int security_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1073 const struct qstr
*qstr
,
1074 const initxattrs initxattrs
, void *fs_data
)
1076 struct xattr new_xattrs
[MAX_LSM_EVM_XATTR
+ 1];
1077 struct xattr
*lsm_xattr
, *evm_xattr
, *xattr
;
1080 if (unlikely(IS_PRIVATE(inode
)))
1084 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
,
1085 dir
, qstr
, NULL
, NULL
, NULL
);
1086 memset(new_xattrs
, 0, sizeof(new_xattrs
));
1087 lsm_xattr
= new_xattrs
;
1088 ret
= call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
, qstr
,
1091 &lsm_xattr
->value_len
);
1095 evm_xattr
= lsm_xattr
+ 1;
1096 ret
= evm_inode_init_security(inode
, lsm_xattr
, evm_xattr
);
1099 ret
= initxattrs(inode
, new_xattrs
, fs_data
);
1101 for (xattr
= new_xattrs
; xattr
->value
!= NULL
; xattr
++)
1102 kfree(xattr
->value
);
1103 return (ret
== -EOPNOTSUPP
) ? 0 : ret
;
1105 EXPORT_SYMBOL(security_inode_init_security
);
1107 int security_inode_init_security_anon(struct inode
*inode
,
1108 const struct qstr
*name
,
1109 const struct inode
*context_inode
)
1111 return call_int_hook(inode_init_security_anon
, 0, inode
, name
,
1115 int security_old_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1116 const struct qstr
*qstr
, const char **name
,
1117 void **value
, size_t *len
)
1119 if (unlikely(IS_PRIVATE(inode
)))
1121 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
,
1122 qstr
, name
, value
, len
);
1124 EXPORT_SYMBOL(security_old_inode_init_security
);
1126 #ifdef CONFIG_SECURITY_PATH
1127 int security_path_mknod(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
,
1130 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1132 return call_int_hook(path_mknod
, 0, dir
, dentry
, mode
, dev
);
1134 EXPORT_SYMBOL(security_path_mknod
);
1136 int security_path_mkdir(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
)
1138 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1140 return call_int_hook(path_mkdir
, 0, dir
, dentry
, mode
);
1142 EXPORT_SYMBOL(security_path_mkdir
);
1144 int security_path_rmdir(const struct path
*dir
, struct dentry
*dentry
)
1146 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1148 return call_int_hook(path_rmdir
, 0, dir
, dentry
);
1151 int security_path_unlink(const struct path
*dir
, struct dentry
*dentry
)
1153 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1155 return call_int_hook(path_unlink
, 0, dir
, dentry
);
1157 EXPORT_SYMBOL(security_path_unlink
);
1159 int security_path_symlink(const struct path
*dir
, struct dentry
*dentry
,
1160 const char *old_name
)
1162 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1164 return call_int_hook(path_symlink
, 0, dir
, dentry
, old_name
);
1167 int security_path_link(struct dentry
*old_dentry
, const struct path
*new_dir
,
1168 struct dentry
*new_dentry
)
1170 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1172 return call_int_hook(path_link
, 0, old_dentry
, new_dir
, new_dentry
);
1175 int security_path_rename(const struct path
*old_dir
, struct dentry
*old_dentry
,
1176 const struct path
*new_dir
, struct dentry
*new_dentry
,
1179 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1180 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1183 if (flags
& RENAME_EXCHANGE
) {
1184 int err
= call_int_hook(path_rename
, 0, new_dir
, new_dentry
,
1185 old_dir
, old_dentry
);
1190 return call_int_hook(path_rename
, 0, old_dir
, old_dentry
, new_dir
,
1193 EXPORT_SYMBOL(security_path_rename
);
1195 int security_path_truncate(const struct path
*path
)
1197 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1199 return call_int_hook(path_truncate
, 0, path
);
1202 int security_path_chmod(const struct path
*path
, umode_t mode
)
1204 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1206 return call_int_hook(path_chmod
, 0, path
, mode
);
1209 int security_path_chown(const struct path
*path
, kuid_t uid
, kgid_t gid
)
1211 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1213 return call_int_hook(path_chown
, 0, path
, uid
, gid
);
1216 int security_path_chroot(const struct path
*path
)
1218 return call_int_hook(path_chroot
, 0, path
);
1222 int security_inode_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1224 if (unlikely(IS_PRIVATE(dir
)))
1226 return call_int_hook(inode_create
, 0, dir
, dentry
, mode
);
1228 EXPORT_SYMBOL_GPL(security_inode_create
);
1230 int security_inode_link(struct dentry
*old_dentry
, struct inode
*dir
,
1231 struct dentry
*new_dentry
)
1233 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1235 return call_int_hook(inode_link
, 0, old_dentry
, dir
, new_dentry
);
1238 int security_inode_unlink(struct inode
*dir
, struct dentry
*dentry
)
1240 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1242 return call_int_hook(inode_unlink
, 0, dir
, dentry
);
1245 int security_inode_symlink(struct inode
*dir
, struct dentry
*dentry
,
1246 const char *old_name
)
1248 if (unlikely(IS_PRIVATE(dir
)))
1250 return call_int_hook(inode_symlink
, 0, dir
, dentry
, old_name
);
1253 int security_inode_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1255 if (unlikely(IS_PRIVATE(dir
)))
1257 return call_int_hook(inode_mkdir
, 0, dir
, dentry
, mode
);
1259 EXPORT_SYMBOL_GPL(security_inode_mkdir
);
1261 int security_inode_rmdir(struct inode
*dir
, struct dentry
*dentry
)
1263 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1265 return call_int_hook(inode_rmdir
, 0, dir
, dentry
);
1268 int security_inode_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
, dev_t dev
)
1270 if (unlikely(IS_PRIVATE(dir
)))
1272 return call_int_hook(inode_mknod
, 0, dir
, dentry
, mode
, dev
);
1275 int security_inode_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1276 struct inode
*new_dir
, struct dentry
*new_dentry
,
1279 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1280 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1283 if (flags
& RENAME_EXCHANGE
) {
1284 int err
= call_int_hook(inode_rename
, 0, new_dir
, new_dentry
,
1285 old_dir
, old_dentry
);
1290 return call_int_hook(inode_rename
, 0, old_dir
, old_dentry
,
1291 new_dir
, new_dentry
);
1294 int security_inode_readlink(struct dentry
*dentry
)
1296 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1298 return call_int_hook(inode_readlink
, 0, dentry
);
1301 int security_inode_follow_link(struct dentry
*dentry
, struct inode
*inode
,
1304 if (unlikely(IS_PRIVATE(inode
)))
1306 return call_int_hook(inode_follow_link
, 0, dentry
, inode
, rcu
);
1309 int security_inode_permission(struct inode
*inode
, int mask
)
1311 if (unlikely(IS_PRIVATE(inode
)))
1313 return call_int_hook(inode_permission
, 0, inode
, mask
);
1316 int security_inode_setattr(struct dentry
*dentry
, struct iattr
*attr
)
1320 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1322 ret
= call_int_hook(inode_setattr
, 0, dentry
, attr
);
1325 return evm_inode_setattr(dentry
, attr
);
1327 EXPORT_SYMBOL_GPL(security_inode_setattr
);
1329 int security_inode_getattr(const struct path
*path
)
1331 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1333 return call_int_hook(inode_getattr
, 0, path
);
1336 int security_inode_setxattr(struct user_namespace
*mnt_userns
,
1337 struct dentry
*dentry
, const char *name
,
1338 const void *value
, size_t size
, int flags
)
1342 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1345 * SELinux and Smack integrate the cap call,
1346 * so assume that all LSMs supplying this call do so.
1348 ret
= call_int_hook(inode_setxattr
, 1, mnt_userns
, dentry
, name
, value
,
1352 ret
= cap_inode_setxattr(dentry
, name
, value
, size
, flags
);
1355 ret
= ima_inode_setxattr(dentry
, name
, value
, size
);
1358 return evm_inode_setxattr(mnt_userns
, dentry
, name
, value
, size
);
1361 void security_inode_post_setxattr(struct dentry
*dentry
, const char *name
,
1362 const void *value
, size_t size
, int flags
)
1364 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1366 call_void_hook(inode_post_setxattr
, dentry
, name
, value
, size
, flags
);
1367 evm_inode_post_setxattr(dentry
, name
, value
, size
);
1370 int security_inode_getxattr(struct dentry
*dentry
, const char *name
)
1372 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1374 return call_int_hook(inode_getxattr
, 0, dentry
, name
);
1377 int security_inode_listxattr(struct dentry
*dentry
)
1379 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1381 return call_int_hook(inode_listxattr
, 0, dentry
);
1384 int security_inode_removexattr(struct user_namespace
*mnt_userns
,
1385 struct dentry
*dentry
, const char *name
)
1389 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1392 * SELinux and Smack integrate the cap call,
1393 * so assume that all LSMs supplying this call do so.
1395 ret
= call_int_hook(inode_removexattr
, 1, mnt_userns
, dentry
, name
);
1397 ret
= cap_inode_removexattr(mnt_userns
, dentry
, name
);
1400 ret
= ima_inode_removexattr(dentry
, name
);
1403 return evm_inode_removexattr(mnt_userns
, dentry
, name
);
1406 int security_inode_need_killpriv(struct dentry
*dentry
)
1408 return call_int_hook(inode_need_killpriv
, 0, dentry
);
1411 int security_inode_killpriv(struct user_namespace
*mnt_userns
,
1412 struct dentry
*dentry
)
1414 return call_int_hook(inode_killpriv
, 0, mnt_userns
, dentry
);
1417 int security_inode_getsecurity(struct user_namespace
*mnt_userns
,
1418 struct inode
*inode
, const char *name
,
1419 void **buffer
, bool alloc
)
1421 struct security_hook_list
*hp
;
1424 if (unlikely(IS_PRIVATE(inode
)))
1425 return LSM_RET_DEFAULT(inode_getsecurity
);
1427 * Only one module will provide an attribute with a given name.
1429 hlist_for_each_entry(hp
, &security_hook_heads
.inode_getsecurity
, list
) {
1430 rc
= hp
->hook
.inode_getsecurity(mnt_userns
, inode
, name
, buffer
, alloc
);
1431 if (rc
!= LSM_RET_DEFAULT(inode_getsecurity
))
1434 return LSM_RET_DEFAULT(inode_getsecurity
);
1437 int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
)
1439 struct security_hook_list
*hp
;
1442 if (unlikely(IS_PRIVATE(inode
)))
1443 return LSM_RET_DEFAULT(inode_setsecurity
);
1445 * Only one module will provide an attribute with a given name.
1447 hlist_for_each_entry(hp
, &security_hook_heads
.inode_setsecurity
, list
) {
1448 rc
= hp
->hook
.inode_setsecurity(inode
, name
, value
, size
,
1450 if (rc
!= LSM_RET_DEFAULT(inode_setsecurity
))
1453 return LSM_RET_DEFAULT(inode_setsecurity
);
1456 int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
)
1458 if (unlikely(IS_PRIVATE(inode
)))
1460 return call_int_hook(inode_listsecurity
, 0, inode
, buffer
, buffer_size
);
1462 EXPORT_SYMBOL(security_inode_listsecurity
);
1464 void security_inode_getsecid(struct inode
*inode
, u32
*secid
)
1466 call_void_hook(inode_getsecid
, inode
, secid
);
1469 int security_inode_copy_up(struct dentry
*src
, struct cred
**new)
1471 return call_int_hook(inode_copy_up
, 0, src
, new);
1473 EXPORT_SYMBOL(security_inode_copy_up
);
1475 int security_inode_copy_up_xattr(const char *name
)
1477 struct security_hook_list
*hp
;
1481 * The implementation can return 0 (accept the xattr), 1 (discard the
1482 * xattr), -EOPNOTSUPP if it does not know anything about the xattr or
1483 * any other error code incase of an error.
1485 hlist_for_each_entry(hp
,
1486 &security_hook_heads
.inode_copy_up_xattr
, list
) {
1487 rc
= hp
->hook
.inode_copy_up_xattr(name
);
1488 if (rc
!= LSM_RET_DEFAULT(inode_copy_up_xattr
))
1492 return LSM_RET_DEFAULT(inode_copy_up_xattr
);
1494 EXPORT_SYMBOL(security_inode_copy_up_xattr
);
1496 int security_kernfs_init_security(struct kernfs_node
*kn_dir
,
1497 struct kernfs_node
*kn
)
1499 return call_int_hook(kernfs_init_security
, 0, kn_dir
, kn
);
1502 int security_file_permission(struct file
*file
, int mask
)
1506 ret
= call_int_hook(file_permission
, 0, file
, mask
);
1510 return fsnotify_perm(file
, mask
);
1513 int security_file_alloc(struct file
*file
)
1515 int rc
= lsm_file_alloc(file
);
1519 rc
= call_int_hook(file_alloc_security
, 0, file
);
1521 security_file_free(file
);
1525 void security_file_free(struct file
*file
)
1529 call_void_hook(file_free_security
, file
);
1531 blob
= file
->f_security
;
1533 file
->f_security
= NULL
;
1534 kmem_cache_free(lsm_file_cache
, blob
);
1538 int security_file_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1540 return call_int_hook(file_ioctl
, 0, file
, cmd
, arg
);
1542 EXPORT_SYMBOL_GPL(security_file_ioctl
);
1544 static inline unsigned long mmap_prot(struct file
*file
, unsigned long prot
)
1547 * Does we have PROT_READ and does the application expect
1548 * it to imply PROT_EXEC? If not, nothing to talk about...
1550 if ((prot
& (PROT_READ
| PROT_EXEC
)) != PROT_READ
)
1552 if (!(current
->personality
& READ_IMPLIES_EXEC
))
1555 * if that's an anonymous mapping, let it.
1558 return prot
| PROT_EXEC
;
1560 * ditto if it's not on noexec mount, except that on !MMU we need
1561 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1563 if (!path_noexec(&file
->f_path
)) {
1565 if (file
->f_op
->mmap_capabilities
) {
1566 unsigned caps
= file
->f_op
->mmap_capabilities(file
);
1567 if (!(caps
& NOMMU_MAP_EXEC
))
1571 return prot
| PROT_EXEC
;
1573 /* anything on noexec mount won't get PROT_EXEC */
1577 int security_mmap_file(struct file
*file
, unsigned long prot
,
1578 unsigned long flags
)
1581 ret
= call_int_hook(mmap_file
, 0, file
, prot
,
1582 mmap_prot(file
, prot
), flags
);
1585 return ima_file_mmap(file
, prot
);
1588 int security_mmap_addr(unsigned long addr
)
1590 return call_int_hook(mmap_addr
, 0, addr
);
1593 int security_file_mprotect(struct vm_area_struct
*vma
, unsigned long reqprot
,
1598 ret
= call_int_hook(file_mprotect
, 0, vma
, reqprot
, prot
);
1601 return ima_file_mprotect(vma
, prot
);
1604 int security_file_lock(struct file
*file
, unsigned int cmd
)
1606 return call_int_hook(file_lock
, 0, file
, cmd
);
1609 int security_file_fcntl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1611 return call_int_hook(file_fcntl
, 0, file
, cmd
, arg
);
1614 void security_file_set_fowner(struct file
*file
)
1616 call_void_hook(file_set_fowner
, file
);
1619 int security_file_send_sigiotask(struct task_struct
*tsk
,
1620 struct fown_struct
*fown
, int sig
)
1622 return call_int_hook(file_send_sigiotask
, 0, tsk
, fown
, sig
);
1625 int security_file_receive(struct file
*file
)
1627 return call_int_hook(file_receive
, 0, file
);
1630 int security_file_open(struct file
*file
)
1634 ret
= call_int_hook(file_open
, 0, file
);
1638 return fsnotify_perm(file
, MAY_OPEN
);
1641 int security_task_alloc(struct task_struct
*task
, unsigned long clone_flags
)
1643 int rc
= lsm_task_alloc(task
);
1647 rc
= call_int_hook(task_alloc
, 0, task
, clone_flags
);
1649 security_task_free(task
);
1653 void security_task_free(struct task_struct
*task
)
1655 call_void_hook(task_free
, task
);
1657 kfree(task
->security
);
1658 task
->security
= NULL
;
1661 int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
)
1663 int rc
= lsm_cred_alloc(cred
, gfp
);
1668 rc
= call_int_hook(cred_alloc_blank
, 0, cred
, gfp
);
1670 security_cred_free(cred
);
1674 void security_cred_free(struct cred
*cred
)
1677 * There is a failure case in prepare_creds() that
1678 * may result in a call here with ->security being NULL.
1680 if (unlikely(cred
->security
== NULL
))
1683 call_void_hook(cred_free
, cred
);
1685 kfree(cred
->security
);
1686 cred
->security
= NULL
;
1689 int security_prepare_creds(struct cred
*new, const struct cred
*old
, gfp_t gfp
)
1691 int rc
= lsm_cred_alloc(new, gfp
);
1696 rc
= call_int_hook(cred_prepare
, 0, new, old
, gfp
);
1698 security_cred_free(new);
1702 void security_transfer_creds(struct cred
*new, const struct cred
*old
)
1704 call_void_hook(cred_transfer
, new, old
);
1707 void security_cred_getsecid(const struct cred
*c
, u32
*secid
)
1710 call_void_hook(cred_getsecid
, c
, secid
);
1712 EXPORT_SYMBOL(security_cred_getsecid
);
1714 int security_kernel_act_as(struct cred
*new, u32 secid
)
1716 return call_int_hook(kernel_act_as
, 0, new, secid
);
1719 int security_kernel_create_files_as(struct cred
*new, struct inode
*inode
)
1721 return call_int_hook(kernel_create_files_as
, 0, new, inode
);
1724 int security_kernel_module_request(char *kmod_name
)
1728 ret
= call_int_hook(kernel_module_request
, 0, kmod_name
);
1731 return integrity_kernel_module_request(kmod_name
);
1734 int security_kernel_read_file(struct file
*file
, enum kernel_read_file_id id
,
1739 ret
= call_int_hook(kernel_read_file
, 0, file
, id
, contents
);
1742 return ima_read_file(file
, id
, contents
);
1744 EXPORT_SYMBOL_GPL(security_kernel_read_file
);
1746 int security_kernel_post_read_file(struct file
*file
, char *buf
, loff_t size
,
1747 enum kernel_read_file_id id
)
1751 ret
= call_int_hook(kernel_post_read_file
, 0, file
, buf
, size
, id
);
1754 return ima_post_read_file(file
, buf
, size
, id
);
1756 EXPORT_SYMBOL_GPL(security_kernel_post_read_file
);
1758 int security_kernel_load_data(enum kernel_load_data_id id
, bool contents
)
1762 ret
= call_int_hook(kernel_load_data
, 0, id
, contents
);
1765 return ima_load_data(id
, contents
);
1767 EXPORT_SYMBOL_GPL(security_kernel_load_data
);
1769 int security_kernel_post_load_data(char *buf
, loff_t size
,
1770 enum kernel_load_data_id id
,
1775 ret
= call_int_hook(kernel_post_load_data
, 0, buf
, size
, id
,
1779 return ima_post_load_data(buf
, size
, id
, description
);
1781 EXPORT_SYMBOL_GPL(security_kernel_post_load_data
);
1783 int security_task_fix_setuid(struct cred
*new, const struct cred
*old
,
1786 return call_int_hook(task_fix_setuid
, 0, new, old
, flags
);
1789 int security_task_fix_setgid(struct cred
*new, const struct cred
*old
,
1792 return call_int_hook(task_fix_setgid
, 0, new, old
, flags
);
1795 int security_task_setpgid(struct task_struct
*p
, pid_t pgid
)
1797 return call_int_hook(task_setpgid
, 0, p
, pgid
);
1800 int security_task_getpgid(struct task_struct
*p
)
1802 return call_int_hook(task_getpgid
, 0, p
);
1805 int security_task_getsid(struct task_struct
*p
)
1807 return call_int_hook(task_getsid
, 0, p
);
1810 void security_task_getsecid_subj(struct task_struct
*p
, u32
*secid
)
1813 call_void_hook(task_getsecid_subj
, p
, secid
);
1815 EXPORT_SYMBOL(security_task_getsecid_subj
);
1817 void security_task_getsecid_obj(struct task_struct
*p
, u32
*secid
)
1820 call_void_hook(task_getsecid_obj
, p
, secid
);
1822 EXPORT_SYMBOL(security_task_getsecid_obj
);
1824 int security_task_setnice(struct task_struct
*p
, int nice
)
1826 return call_int_hook(task_setnice
, 0, p
, nice
);
1829 int security_task_setioprio(struct task_struct
*p
, int ioprio
)
1831 return call_int_hook(task_setioprio
, 0, p
, ioprio
);
1834 int security_task_getioprio(struct task_struct
*p
)
1836 return call_int_hook(task_getioprio
, 0, p
);
1839 int security_task_prlimit(const struct cred
*cred
, const struct cred
*tcred
,
1842 return call_int_hook(task_prlimit
, 0, cred
, tcred
, flags
);
1845 int security_task_setrlimit(struct task_struct
*p
, unsigned int resource
,
1846 struct rlimit
*new_rlim
)
1848 return call_int_hook(task_setrlimit
, 0, p
, resource
, new_rlim
);
1851 int security_task_setscheduler(struct task_struct
*p
)
1853 return call_int_hook(task_setscheduler
, 0, p
);
1856 int security_task_getscheduler(struct task_struct
*p
)
1858 return call_int_hook(task_getscheduler
, 0, p
);
1861 int security_task_movememory(struct task_struct
*p
)
1863 return call_int_hook(task_movememory
, 0, p
);
1866 int security_task_kill(struct task_struct
*p
, struct kernel_siginfo
*info
,
1867 int sig
, const struct cred
*cred
)
1869 return call_int_hook(task_kill
, 0, p
, info
, sig
, cred
);
1872 int security_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1873 unsigned long arg4
, unsigned long arg5
)
1876 int rc
= LSM_RET_DEFAULT(task_prctl
);
1877 struct security_hook_list
*hp
;
1879 hlist_for_each_entry(hp
, &security_hook_heads
.task_prctl
, list
) {
1880 thisrc
= hp
->hook
.task_prctl(option
, arg2
, arg3
, arg4
, arg5
);
1881 if (thisrc
!= LSM_RET_DEFAULT(task_prctl
)) {
1890 void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
)
1892 call_void_hook(task_to_inode
, p
, inode
);
1895 int security_ipc_permission(struct kern_ipc_perm
*ipcp
, short flag
)
1897 return call_int_hook(ipc_permission
, 0, ipcp
, flag
);
1900 void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
)
1903 call_void_hook(ipc_getsecid
, ipcp
, secid
);
1906 int security_msg_msg_alloc(struct msg_msg
*msg
)
1908 int rc
= lsm_msg_msg_alloc(msg
);
1912 rc
= call_int_hook(msg_msg_alloc_security
, 0, msg
);
1914 security_msg_msg_free(msg
);
1918 void security_msg_msg_free(struct msg_msg
*msg
)
1920 call_void_hook(msg_msg_free_security
, msg
);
1921 kfree(msg
->security
);
1922 msg
->security
= NULL
;
1925 int security_msg_queue_alloc(struct kern_ipc_perm
*msq
)
1927 int rc
= lsm_ipc_alloc(msq
);
1931 rc
= call_int_hook(msg_queue_alloc_security
, 0, msq
);
1933 security_msg_queue_free(msq
);
1937 void security_msg_queue_free(struct kern_ipc_perm
*msq
)
1939 call_void_hook(msg_queue_free_security
, msq
);
1940 kfree(msq
->security
);
1941 msq
->security
= NULL
;
1944 int security_msg_queue_associate(struct kern_ipc_perm
*msq
, int msqflg
)
1946 return call_int_hook(msg_queue_associate
, 0, msq
, msqflg
);
1949 int security_msg_queue_msgctl(struct kern_ipc_perm
*msq
, int cmd
)
1951 return call_int_hook(msg_queue_msgctl
, 0, msq
, cmd
);
1954 int security_msg_queue_msgsnd(struct kern_ipc_perm
*msq
,
1955 struct msg_msg
*msg
, int msqflg
)
1957 return call_int_hook(msg_queue_msgsnd
, 0, msq
, msg
, msqflg
);
1960 int security_msg_queue_msgrcv(struct kern_ipc_perm
*msq
, struct msg_msg
*msg
,
1961 struct task_struct
*target
, long type
, int mode
)
1963 return call_int_hook(msg_queue_msgrcv
, 0, msq
, msg
, target
, type
, mode
);
1966 int security_shm_alloc(struct kern_ipc_perm
*shp
)
1968 int rc
= lsm_ipc_alloc(shp
);
1972 rc
= call_int_hook(shm_alloc_security
, 0, shp
);
1974 security_shm_free(shp
);
1978 void security_shm_free(struct kern_ipc_perm
*shp
)
1980 call_void_hook(shm_free_security
, shp
);
1981 kfree(shp
->security
);
1982 shp
->security
= NULL
;
1985 int security_shm_associate(struct kern_ipc_perm
*shp
, int shmflg
)
1987 return call_int_hook(shm_associate
, 0, shp
, shmflg
);
1990 int security_shm_shmctl(struct kern_ipc_perm
*shp
, int cmd
)
1992 return call_int_hook(shm_shmctl
, 0, shp
, cmd
);
1995 int security_shm_shmat(struct kern_ipc_perm
*shp
, char __user
*shmaddr
, int shmflg
)
1997 return call_int_hook(shm_shmat
, 0, shp
, shmaddr
, shmflg
);
2000 int security_sem_alloc(struct kern_ipc_perm
*sma
)
2002 int rc
= lsm_ipc_alloc(sma
);
2006 rc
= call_int_hook(sem_alloc_security
, 0, sma
);
2008 security_sem_free(sma
);
2012 void security_sem_free(struct kern_ipc_perm
*sma
)
2014 call_void_hook(sem_free_security
, sma
);
2015 kfree(sma
->security
);
2016 sma
->security
= NULL
;
2019 int security_sem_associate(struct kern_ipc_perm
*sma
, int semflg
)
2021 return call_int_hook(sem_associate
, 0, sma
, semflg
);
2024 int security_sem_semctl(struct kern_ipc_perm
*sma
, int cmd
)
2026 return call_int_hook(sem_semctl
, 0, sma
, cmd
);
2029 int security_sem_semop(struct kern_ipc_perm
*sma
, struct sembuf
*sops
,
2030 unsigned nsops
, int alter
)
2032 return call_int_hook(sem_semop
, 0, sma
, sops
, nsops
, alter
);
2035 void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
)
2037 if (unlikely(inode
&& IS_PRIVATE(inode
)))
2039 call_void_hook(d_instantiate
, dentry
, inode
);
2041 EXPORT_SYMBOL(security_d_instantiate
);
2043 int security_getprocattr(struct task_struct
*p
, const char *lsm
, char *name
,
2046 struct security_hook_list
*hp
;
2048 hlist_for_each_entry(hp
, &security_hook_heads
.getprocattr
, list
) {
2049 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
2051 return hp
->hook
.getprocattr(p
, name
, value
);
2053 return LSM_RET_DEFAULT(getprocattr
);
2056 int security_setprocattr(const char *lsm
, const char *name
, void *value
,
2059 struct security_hook_list
*hp
;
2061 hlist_for_each_entry(hp
, &security_hook_heads
.setprocattr
, list
) {
2062 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
2064 return hp
->hook
.setprocattr(name
, value
, size
);
2066 return LSM_RET_DEFAULT(setprocattr
);
2069 int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
)
2071 return call_int_hook(netlink_send
, 0, sk
, skb
);
2074 int security_ismaclabel(const char *name
)
2076 return call_int_hook(ismaclabel
, 0, name
);
2078 EXPORT_SYMBOL(security_ismaclabel
);
2080 int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
)
2082 struct security_hook_list
*hp
;
2086 * Currently, only one LSM can implement secid_to_secctx (i.e this
2087 * LSM hook is not "stackable").
2089 hlist_for_each_entry(hp
, &security_hook_heads
.secid_to_secctx
, list
) {
2090 rc
= hp
->hook
.secid_to_secctx(secid
, secdata
, seclen
);
2091 if (rc
!= LSM_RET_DEFAULT(secid_to_secctx
))
2095 return LSM_RET_DEFAULT(secid_to_secctx
);
2097 EXPORT_SYMBOL(security_secid_to_secctx
);
2099 int security_secctx_to_secid(const char *secdata
, u32 seclen
, u32
*secid
)
2102 return call_int_hook(secctx_to_secid
, 0, secdata
, seclen
, secid
);
2104 EXPORT_SYMBOL(security_secctx_to_secid
);
2106 void security_release_secctx(char *secdata
, u32 seclen
)
2108 call_void_hook(release_secctx
, secdata
, seclen
);
2110 EXPORT_SYMBOL(security_release_secctx
);
2112 void security_inode_invalidate_secctx(struct inode
*inode
)
2114 call_void_hook(inode_invalidate_secctx
, inode
);
2116 EXPORT_SYMBOL(security_inode_invalidate_secctx
);
2118 int security_inode_notifysecctx(struct inode
*inode
, void *ctx
, u32 ctxlen
)
2120 return call_int_hook(inode_notifysecctx
, 0, inode
, ctx
, ctxlen
);
2122 EXPORT_SYMBOL(security_inode_notifysecctx
);
2124 int security_inode_setsecctx(struct dentry
*dentry
, void *ctx
, u32 ctxlen
)
2126 return call_int_hook(inode_setsecctx
, 0, dentry
, ctx
, ctxlen
);
2128 EXPORT_SYMBOL(security_inode_setsecctx
);
2130 int security_inode_getsecctx(struct inode
*inode
, void **ctx
, u32
*ctxlen
)
2132 return call_int_hook(inode_getsecctx
, -EOPNOTSUPP
, inode
, ctx
, ctxlen
);
2134 EXPORT_SYMBOL(security_inode_getsecctx
);
2136 #ifdef CONFIG_WATCH_QUEUE
2137 int security_post_notification(const struct cred
*w_cred
,
2138 const struct cred
*cred
,
2139 struct watch_notification
*n
)
2141 return call_int_hook(post_notification
, 0, w_cred
, cred
, n
);
2143 #endif /* CONFIG_WATCH_QUEUE */
2145 #ifdef CONFIG_KEY_NOTIFICATIONS
2146 int security_watch_key(struct key
*key
)
2148 return call_int_hook(watch_key
, 0, key
);
2152 #ifdef CONFIG_SECURITY_NETWORK
2154 int security_unix_stream_connect(struct sock
*sock
, struct sock
*other
, struct sock
*newsk
)
2156 return call_int_hook(unix_stream_connect
, 0, sock
, other
, newsk
);
2158 EXPORT_SYMBOL(security_unix_stream_connect
);
2160 int security_unix_may_send(struct socket
*sock
, struct socket
*other
)
2162 return call_int_hook(unix_may_send
, 0, sock
, other
);
2164 EXPORT_SYMBOL(security_unix_may_send
);
2166 int security_socket_create(int family
, int type
, int protocol
, int kern
)
2168 return call_int_hook(socket_create
, 0, family
, type
, protocol
, kern
);
2171 int security_socket_post_create(struct socket
*sock
, int family
,
2172 int type
, int protocol
, int kern
)
2174 return call_int_hook(socket_post_create
, 0, sock
, family
, type
,
2178 int security_socket_socketpair(struct socket
*socka
, struct socket
*sockb
)
2180 return call_int_hook(socket_socketpair
, 0, socka
, sockb
);
2182 EXPORT_SYMBOL(security_socket_socketpair
);
2184 int security_socket_bind(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2186 return call_int_hook(socket_bind
, 0, sock
, address
, addrlen
);
2189 int security_socket_connect(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2191 return call_int_hook(socket_connect
, 0, sock
, address
, addrlen
);
2194 int security_socket_listen(struct socket
*sock
, int backlog
)
2196 return call_int_hook(socket_listen
, 0, sock
, backlog
);
2199 int security_socket_accept(struct socket
*sock
, struct socket
*newsock
)
2201 return call_int_hook(socket_accept
, 0, sock
, newsock
);
2204 int security_socket_sendmsg(struct socket
*sock
, struct msghdr
*msg
, int size
)
2206 return call_int_hook(socket_sendmsg
, 0, sock
, msg
, size
);
2209 int security_socket_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
2210 int size
, int flags
)
2212 return call_int_hook(socket_recvmsg
, 0, sock
, msg
, size
, flags
);
2215 int security_socket_getsockname(struct socket
*sock
)
2217 return call_int_hook(socket_getsockname
, 0, sock
);
2220 int security_socket_getpeername(struct socket
*sock
)
2222 return call_int_hook(socket_getpeername
, 0, sock
);
2225 int security_socket_getsockopt(struct socket
*sock
, int level
, int optname
)
2227 return call_int_hook(socket_getsockopt
, 0, sock
, level
, optname
);
2230 int security_socket_setsockopt(struct socket
*sock
, int level
, int optname
)
2232 return call_int_hook(socket_setsockopt
, 0, sock
, level
, optname
);
2235 int security_socket_shutdown(struct socket
*sock
, int how
)
2237 return call_int_hook(socket_shutdown
, 0, sock
, how
);
2240 int security_sock_rcv_skb(struct sock
*sk
, struct sk_buff
*skb
)
2242 return call_int_hook(socket_sock_rcv_skb
, 0, sk
, skb
);
2244 EXPORT_SYMBOL(security_sock_rcv_skb
);
2246 int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2247 int __user
*optlen
, unsigned len
)
2249 return call_int_hook(socket_getpeersec_stream
, -ENOPROTOOPT
, sock
,
2250 optval
, optlen
, len
);
2253 int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
)
2255 return call_int_hook(socket_getpeersec_dgram
, -ENOPROTOOPT
, sock
,
2258 EXPORT_SYMBOL(security_socket_getpeersec_dgram
);
2260 int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
)
2262 return call_int_hook(sk_alloc_security
, 0, sk
, family
, priority
);
2265 void security_sk_free(struct sock
*sk
)
2267 call_void_hook(sk_free_security
, sk
);
2270 void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
)
2272 call_void_hook(sk_clone_security
, sk
, newsk
);
2274 EXPORT_SYMBOL(security_sk_clone
);
2276 void security_sk_classify_flow(struct sock
*sk
, struct flowi_common
*flic
)
2278 call_void_hook(sk_getsecid
, sk
, &flic
->flowic_secid
);
2280 EXPORT_SYMBOL(security_sk_classify_flow
);
2282 void security_req_classify_flow(const struct request_sock
*req
,
2283 struct flowi_common
*flic
)
2285 call_void_hook(req_classify_flow
, req
, flic
);
2287 EXPORT_SYMBOL(security_req_classify_flow
);
2289 void security_sock_graft(struct sock
*sk
, struct socket
*parent
)
2291 call_void_hook(sock_graft
, sk
, parent
);
2293 EXPORT_SYMBOL(security_sock_graft
);
2295 int security_inet_conn_request(const struct sock
*sk
,
2296 struct sk_buff
*skb
, struct request_sock
*req
)
2298 return call_int_hook(inet_conn_request
, 0, sk
, skb
, req
);
2300 EXPORT_SYMBOL(security_inet_conn_request
);
2302 void security_inet_csk_clone(struct sock
*newsk
,
2303 const struct request_sock
*req
)
2305 call_void_hook(inet_csk_clone
, newsk
, req
);
2308 void security_inet_conn_established(struct sock
*sk
,
2309 struct sk_buff
*skb
)
2311 call_void_hook(inet_conn_established
, sk
, skb
);
2313 EXPORT_SYMBOL(security_inet_conn_established
);
2315 int security_secmark_relabel_packet(u32 secid
)
2317 return call_int_hook(secmark_relabel_packet
, 0, secid
);
2319 EXPORT_SYMBOL(security_secmark_relabel_packet
);
2321 void security_secmark_refcount_inc(void)
2323 call_void_hook(secmark_refcount_inc
);
2325 EXPORT_SYMBOL(security_secmark_refcount_inc
);
2327 void security_secmark_refcount_dec(void)
2329 call_void_hook(secmark_refcount_dec
);
2331 EXPORT_SYMBOL(security_secmark_refcount_dec
);
2333 int security_tun_dev_alloc_security(void **security
)
2335 return call_int_hook(tun_dev_alloc_security
, 0, security
);
2337 EXPORT_SYMBOL(security_tun_dev_alloc_security
);
2339 void security_tun_dev_free_security(void *security
)
2341 call_void_hook(tun_dev_free_security
, security
);
2343 EXPORT_SYMBOL(security_tun_dev_free_security
);
2345 int security_tun_dev_create(void)
2347 return call_int_hook(tun_dev_create
, 0);
2349 EXPORT_SYMBOL(security_tun_dev_create
);
2351 int security_tun_dev_attach_queue(void *security
)
2353 return call_int_hook(tun_dev_attach_queue
, 0, security
);
2355 EXPORT_SYMBOL(security_tun_dev_attach_queue
);
2357 int security_tun_dev_attach(struct sock
*sk
, void *security
)
2359 return call_int_hook(tun_dev_attach
, 0, sk
, security
);
2361 EXPORT_SYMBOL(security_tun_dev_attach
);
2363 int security_tun_dev_open(void *security
)
2365 return call_int_hook(tun_dev_open
, 0, security
);
2367 EXPORT_SYMBOL(security_tun_dev_open
);
2369 int security_sctp_assoc_request(struct sctp_endpoint
*ep
, struct sk_buff
*skb
)
2371 return call_int_hook(sctp_assoc_request
, 0, ep
, skb
);
2373 EXPORT_SYMBOL(security_sctp_assoc_request
);
2375 int security_sctp_bind_connect(struct sock
*sk
, int optname
,
2376 struct sockaddr
*address
, int addrlen
)
2378 return call_int_hook(sctp_bind_connect
, 0, sk
, optname
,
2381 EXPORT_SYMBOL(security_sctp_bind_connect
);
2383 void security_sctp_sk_clone(struct sctp_endpoint
*ep
, struct sock
*sk
,
2386 call_void_hook(sctp_sk_clone
, ep
, sk
, newsk
);
2388 EXPORT_SYMBOL(security_sctp_sk_clone
);
2390 #endif /* CONFIG_SECURITY_NETWORK */
2392 #ifdef CONFIG_SECURITY_INFINIBAND
2394 int security_ib_pkey_access(void *sec
, u64 subnet_prefix
, u16 pkey
)
2396 return call_int_hook(ib_pkey_access
, 0, sec
, subnet_prefix
, pkey
);
2398 EXPORT_SYMBOL(security_ib_pkey_access
);
2400 int security_ib_endport_manage_subnet(void *sec
, const char *dev_name
, u8 port_num
)
2402 return call_int_hook(ib_endport_manage_subnet
, 0, sec
, dev_name
, port_num
);
2404 EXPORT_SYMBOL(security_ib_endport_manage_subnet
);
2406 int security_ib_alloc_security(void **sec
)
2408 return call_int_hook(ib_alloc_security
, 0, sec
);
2410 EXPORT_SYMBOL(security_ib_alloc_security
);
2412 void security_ib_free_security(void *sec
)
2414 call_void_hook(ib_free_security
, sec
);
2416 EXPORT_SYMBOL(security_ib_free_security
);
2417 #endif /* CONFIG_SECURITY_INFINIBAND */
2419 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2421 int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
,
2422 struct xfrm_user_sec_ctx
*sec_ctx
,
2425 return call_int_hook(xfrm_policy_alloc_security
, 0, ctxp
, sec_ctx
, gfp
);
2427 EXPORT_SYMBOL(security_xfrm_policy_alloc
);
2429 int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old_ctx
,
2430 struct xfrm_sec_ctx
**new_ctxp
)
2432 return call_int_hook(xfrm_policy_clone_security
, 0, old_ctx
, new_ctxp
);
2435 void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
)
2437 call_void_hook(xfrm_policy_free_security
, ctx
);
2439 EXPORT_SYMBOL(security_xfrm_policy_free
);
2441 int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
)
2443 return call_int_hook(xfrm_policy_delete_security
, 0, ctx
);
2446 int security_xfrm_state_alloc(struct xfrm_state
*x
,
2447 struct xfrm_user_sec_ctx
*sec_ctx
)
2449 return call_int_hook(xfrm_state_alloc
, 0, x
, sec_ctx
);
2451 EXPORT_SYMBOL(security_xfrm_state_alloc
);
2453 int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2454 struct xfrm_sec_ctx
*polsec
, u32 secid
)
2456 return call_int_hook(xfrm_state_alloc_acquire
, 0, x
, polsec
, secid
);
2459 int security_xfrm_state_delete(struct xfrm_state
*x
)
2461 return call_int_hook(xfrm_state_delete_security
, 0, x
);
2463 EXPORT_SYMBOL(security_xfrm_state_delete
);
2465 void security_xfrm_state_free(struct xfrm_state
*x
)
2467 call_void_hook(xfrm_state_free_security
, x
);
2470 int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
)
2472 return call_int_hook(xfrm_policy_lookup
, 0, ctx
, fl_secid
);
2475 int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2476 struct xfrm_policy
*xp
,
2477 const struct flowi_common
*flic
)
2479 struct security_hook_list
*hp
;
2480 int rc
= LSM_RET_DEFAULT(xfrm_state_pol_flow_match
);
2483 * Since this function is expected to return 0 or 1, the judgment
2484 * becomes difficult if multiple LSMs supply this call. Fortunately,
2485 * we can use the first LSM's judgment because currently only SELinux
2486 * supplies this call.
2488 * For speed optimization, we explicitly break the loop rather than
2491 hlist_for_each_entry(hp
, &security_hook_heads
.xfrm_state_pol_flow_match
,
2493 rc
= hp
->hook
.xfrm_state_pol_flow_match(x
, xp
, flic
);
2499 int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
)
2501 return call_int_hook(xfrm_decode_session
, 0, skb
, secid
, 1);
2504 void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi_common
*flic
)
2506 int rc
= call_int_hook(xfrm_decode_session
, 0, skb
, &flic
->flowic_secid
,
2511 EXPORT_SYMBOL(security_skb_classify_flow
);
2513 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2517 int security_key_alloc(struct key
*key
, const struct cred
*cred
,
2518 unsigned long flags
)
2520 return call_int_hook(key_alloc
, 0, key
, cred
, flags
);
2523 void security_key_free(struct key
*key
)
2525 call_void_hook(key_free
, key
);
2528 int security_key_permission(key_ref_t key_ref
, const struct cred
*cred
,
2529 enum key_need_perm need_perm
)
2531 return call_int_hook(key_permission
, 0, key_ref
, cred
, need_perm
);
2534 int security_key_getsecurity(struct key
*key
, char **_buffer
)
2537 return call_int_hook(key_getsecurity
, 0, key
, _buffer
);
2540 #endif /* CONFIG_KEYS */
2544 int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
, void **lsmrule
)
2546 return call_int_hook(audit_rule_init
, 0, field
, op
, rulestr
, lsmrule
);
2549 int security_audit_rule_known(struct audit_krule
*krule
)
2551 return call_int_hook(audit_rule_known
, 0, krule
);
2554 void security_audit_rule_free(void *lsmrule
)
2556 call_void_hook(audit_rule_free
, lsmrule
);
2559 int security_audit_rule_match(u32 secid
, u32 field
, u32 op
, void *lsmrule
)
2561 return call_int_hook(audit_rule_match
, 0, secid
, field
, op
, lsmrule
);
2563 #endif /* CONFIG_AUDIT */
2565 #ifdef CONFIG_BPF_SYSCALL
2566 int security_bpf(int cmd
, union bpf_attr
*attr
, unsigned int size
)
2568 return call_int_hook(bpf
, 0, cmd
, attr
, size
);
2570 int security_bpf_map(struct bpf_map
*map
, fmode_t fmode
)
2572 return call_int_hook(bpf_map
, 0, map
, fmode
);
2574 int security_bpf_prog(struct bpf_prog
*prog
)
2576 return call_int_hook(bpf_prog
, 0, prog
);
2578 int security_bpf_map_alloc(struct bpf_map
*map
)
2580 return call_int_hook(bpf_map_alloc_security
, 0, map
);
2582 int security_bpf_prog_alloc(struct bpf_prog_aux
*aux
)
2584 return call_int_hook(bpf_prog_alloc_security
, 0, aux
);
2586 void security_bpf_map_free(struct bpf_map
*map
)
2588 call_void_hook(bpf_map_free_security
, map
);
2590 void security_bpf_prog_free(struct bpf_prog_aux
*aux
)
2592 call_void_hook(bpf_prog_free_security
, aux
);
2594 #endif /* CONFIG_BPF_SYSCALL */
2596 int security_locked_down(enum lockdown_reason what
)
2598 return call_int_hook(locked_down
, 0, what
);
2600 EXPORT_SYMBOL(security_locked_down
);
2602 #ifdef CONFIG_PERF_EVENTS
2603 int security_perf_event_open(struct perf_event_attr
*attr
, int type
)
2605 return call_int_hook(perf_event_open
, 0, attr
, type
);
2608 int security_perf_event_alloc(struct perf_event
*event
)
2610 return call_int_hook(perf_event_alloc
, 0, event
);
2613 void security_perf_event_free(struct perf_event
*event
)
2615 call_void_hook(perf_event_free
, event
);
2618 int security_perf_event_read(struct perf_event
*event
)
2620 return call_int_hook(perf_event_read
, 0, event
);
2623 int security_perf_event_write(struct perf_event
*event
)
2625 return call_int_hook(perf_event_write
, 0, event
);
2627 #endif /* CONFIG_PERF_EVENTS */