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_DBG_WRITE_KERNEL
] = "use of kgdb/kdb to write kernel RAM",
63 [LOCKDOWN_INTEGRITY_MAX
] = "integrity",
64 [LOCKDOWN_KCORE
] = "/proc/kcore access",
65 [LOCKDOWN_KPROBES
] = "use of kprobes",
66 [LOCKDOWN_BPF_READ_KERNEL
] = "use of bpf to read kernel RAM",
67 [LOCKDOWN_DBG_READ_KERNEL
] = "use of kgdb/kdb to read kernel RAM",
68 [LOCKDOWN_PERF
] = "unsafe use of perf",
69 [LOCKDOWN_TRACEFS
] = "use of tracefs",
70 [LOCKDOWN_XMON_RW
] = "xmon read and write access",
71 [LOCKDOWN_XFRM_SECRET
] = "xfrm SA secret",
72 [LOCKDOWN_CONFIDENTIALITY_MAX
] = "confidentiality",
75 struct security_hook_heads security_hook_heads __lsm_ro_after_init
;
76 static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain
);
78 static struct kmem_cache
*lsm_file_cache
;
79 static struct kmem_cache
*lsm_inode_cache
;
82 static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init
;
84 /* Boot-time LSM user choice */
85 static __initdata
const char *chosen_lsm_order
;
86 static __initdata
const char *chosen_major_lsm
;
88 static __initconst
const char * const builtin_lsm_order
= CONFIG_LSM
;
90 /* Ordered list of LSMs to initialize. */
91 static __initdata
struct lsm_info
**ordered_lsms
;
92 static __initdata
struct lsm_info
*exclusive
;
94 static __initdata
bool debug
;
95 #define init_debug(...) \
98 pr_info(__VA_ARGS__); \
101 static bool __init
is_enabled(struct lsm_info
*lsm
)
106 return *lsm
->enabled
;
109 /* Mark an LSM's enabled flag. */
110 static int lsm_enabled_true __initdata
= 1;
111 static int lsm_enabled_false __initdata
= 0;
112 static void __init
set_enabled(struct lsm_info
*lsm
, bool enabled
)
115 * When an LSM hasn't configured an enable variable, we can use
116 * a hard-coded location for storing the default enabled state.
120 lsm
->enabled
= &lsm_enabled_true
;
122 lsm
->enabled
= &lsm_enabled_false
;
123 } else if (lsm
->enabled
== &lsm_enabled_true
) {
125 lsm
->enabled
= &lsm_enabled_false
;
126 } else if (lsm
->enabled
== &lsm_enabled_false
) {
128 lsm
->enabled
= &lsm_enabled_true
;
130 *lsm
->enabled
= enabled
;
134 /* Is an LSM already listed in the ordered LSMs list? */
135 static bool __init
exists_ordered_lsm(struct lsm_info
*lsm
)
137 struct lsm_info
**check
;
139 for (check
= ordered_lsms
; *check
; check
++)
146 /* Append an LSM to the list of ordered LSMs to initialize. */
147 static int last_lsm __initdata
;
148 static void __init
append_ordered_lsm(struct lsm_info
*lsm
, const char *from
)
150 /* Ignore duplicate selections. */
151 if (exists_ordered_lsm(lsm
))
154 if (WARN(last_lsm
== LSM_COUNT
, "%s: out of LSM slots!?\n", from
))
157 /* Enable this LSM, if it is not already set. */
159 lsm
->enabled
= &lsm_enabled_true
;
160 ordered_lsms
[last_lsm
++] = lsm
;
162 init_debug("%s ordering: %s (%sabled)\n", from
, lsm
->name
,
163 is_enabled(lsm
) ? "en" : "dis");
166 /* Is an LSM allowed to be initialized? */
167 static bool __init
lsm_allowed(struct lsm_info
*lsm
)
169 /* Skip if the LSM is disabled. */
170 if (!is_enabled(lsm
))
173 /* Not allowed if another exclusive LSM already initialized. */
174 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && exclusive
) {
175 init_debug("exclusive disabled: %s\n", lsm
->name
);
182 static void __init
lsm_set_blob_size(int *need
, int *lbs
)
193 static void __init
lsm_set_blob_sizes(struct lsm_blob_sizes
*needed
)
198 lsm_set_blob_size(&needed
->lbs_cred
, &blob_sizes
.lbs_cred
);
199 lsm_set_blob_size(&needed
->lbs_file
, &blob_sizes
.lbs_file
);
201 * The inode blob gets an rcu_head in addition to
202 * what the modules might need.
204 if (needed
->lbs_inode
&& blob_sizes
.lbs_inode
== 0)
205 blob_sizes
.lbs_inode
= sizeof(struct rcu_head
);
206 lsm_set_blob_size(&needed
->lbs_inode
, &blob_sizes
.lbs_inode
);
207 lsm_set_blob_size(&needed
->lbs_ipc
, &blob_sizes
.lbs_ipc
);
208 lsm_set_blob_size(&needed
->lbs_msg_msg
, &blob_sizes
.lbs_msg_msg
);
209 lsm_set_blob_size(&needed
->lbs_superblock
, &blob_sizes
.lbs_superblock
);
210 lsm_set_blob_size(&needed
->lbs_task
, &blob_sizes
.lbs_task
);
213 /* Prepare LSM for initialization. */
214 static void __init
prepare_lsm(struct lsm_info
*lsm
)
216 int enabled
= lsm_allowed(lsm
);
218 /* Record enablement (to handle any following exclusive LSMs). */
219 set_enabled(lsm
, enabled
);
221 /* If enabled, do pre-initialization work. */
223 if ((lsm
->flags
& LSM_FLAG_EXCLUSIVE
) && !exclusive
) {
225 init_debug("exclusive chosen: %s\n", lsm
->name
);
228 lsm_set_blob_sizes(lsm
->blobs
);
232 /* Initialize a given LSM, if it is enabled. */
233 static void __init
initialize_lsm(struct lsm_info
*lsm
)
235 if (is_enabled(lsm
)) {
238 init_debug("initializing %s\n", lsm
->name
);
240 WARN(ret
, "%s failed to initialize: %d\n", lsm
->name
, ret
);
244 /* Populate ordered LSMs list from comma-separated LSM name list. */
245 static void __init
ordered_lsm_parse(const char *order
, const char *origin
)
247 struct lsm_info
*lsm
;
248 char *sep
, *name
, *next
;
250 /* LSM_ORDER_FIRST is always first. */
251 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
252 if (lsm
->order
== LSM_ORDER_FIRST
)
253 append_ordered_lsm(lsm
, "first");
256 /* Process "security=", if given. */
257 if (chosen_major_lsm
) {
258 struct lsm_info
*major
;
261 * To match the original "security=" behavior, this
262 * explicitly does NOT fallback to another Legacy Major
263 * if the selected one was separately disabled: disable
264 * all non-matching Legacy Major LSMs.
266 for (major
= __start_lsm_info
; major
< __end_lsm_info
;
268 if ((major
->flags
& LSM_FLAG_LEGACY_MAJOR
) &&
269 strcmp(major
->name
, chosen_major_lsm
) != 0) {
270 set_enabled(major
, false);
271 init_debug("security=%s disabled: %s\n",
272 chosen_major_lsm
, major
->name
);
277 sep
= kstrdup(order
, GFP_KERNEL
);
279 /* Walk the list, looking for matching LSMs. */
280 while ((name
= strsep(&next
, ",")) != NULL
) {
283 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
284 if (lsm
->order
== LSM_ORDER_MUTABLE
&&
285 strcmp(lsm
->name
, name
) == 0) {
286 append_ordered_lsm(lsm
, origin
);
292 init_debug("%s ignored: %s\n", origin
, name
);
295 /* Process "security=", if given. */
296 if (chosen_major_lsm
) {
297 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
298 if (exists_ordered_lsm(lsm
))
300 if (strcmp(lsm
->name
, chosen_major_lsm
) == 0)
301 append_ordered_lsm(lsm
, "security=");
305 /* Disable all LSMs not in the ordered list. */
306 for (lsm
= __start_lsm_info
; lsm
< __end_lsm_info
; lsm
++) {
307 if (exists_ordered_lsm(lsm
))
309 set_enabled(lsm
, false);
310 init_debug("%s disabled: %s\n", origin
, lsm
->name
);
316 static void __init
lsm_early_cred(struct cred
*cred
);
317 static void __init
lsm_early_task(struct task_struct
*task
);
319 static int lsm_append(const char *new, char **result
);
321 static void __init
ordered_lsm_init(void)
323 struct lsm_info
**lsm
;
325 ordered_lsms
= kcalloc(LSM_COUNT
+ 1, sizeof(*ordered_lsms
),
328 if (chosen_lsm_order
) {
329 if (chosen_major_lsm
) {
330 pr_info("security= is ignored because it is superseded by lsm=\n");
331 chosen_major_lsm
= NULL
;
333 ordered_lsm_parse(chosen_lsm_order
, "cmdline");
335 ordered_lsm_parse(builtin_lsm_order
, "builtin");
337 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
340 init_debug("cred blob size = %d\n", blob_sizes
.lbs_cred
);
341 init_debug("file blob size = %d\n", blob_sizes
.lbs_file
);
342 init_debug("inode blob size = %d\n", blob_sizes
.lbs_inode
);
343 init_debug("ipc blob size = %d\n", blob_sizes
.lbs_ipc
);
344 init_debug("msg_msg blob size = %d\n", blob_sizes
.lbs_msg_msg
);
345 init_debug("superblock blob size = %d\n", blob_sizes
.lbs_superblock
);
346 init_debug("task blob size = %d\n", blob_sizes
.lbs_task
);
349 * Create any kmem_caches needed for blobs
351 if (blob_sizes
.lbs_file
)
352 lsm_file_cache
= kmem_cache_create("lsm_file_cache",
353 blob_sizes
.lbs_file
, 0,
355 if (blob_sizes
.lbs_inode
)
356 lsm_inode_cache
= kmem_cache_create("lsm_inode_cache",
357 blob_sizes
.lbs_inode
, 0,
360 lsm_early_cred((struct cred
*) current
->cred
);
361 lsm_early_task(current
);
362 for (lsm
= ordered_lsms
; *lsm
; lsm
++)
363 initialize_lsm(*lsm
);
368 int __init
early_security_init(void)
370 struct lsm_info
*lsm
;
372 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
373 INIT_HLIST_HEAD(&security_hook_heads.NAME);
374 #include "linux/lsm_hook_defs.h"
377 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
379 lsm
->enabled
= &lsm_enabled_true
;
388 * security_init - initializes the security framework
390 * This should be called early in the kernel initialization sequence.
392 int __init
security_init(void)
394 struct lsm_info
*lsm
;
396 pr_info("Security Framework initializing\n");
399 * Append the names of the early LSM modules now that kmalloc() is
402 for (lsm
= __start_early_lsm_info
; lsm
< __end_early_lsm_info
; lsm
++) {
404 lsm_append(lsm
->name
, &lsm_names
);
407 /* Load LSMs in specified order. */
413 /* Save user chosen LSM */
414 static int __init
choose_major_lsm(char *str
)
416 chosen_major_lsm
= str
;
419 __setup("security=", choose_major_lsm
);
421 /* Explicitly choose LSM initialization order. */
422 static int __init
choose_lsm_order(char *str
)
424 chosen_lsm_order
= str
;
427 __setup("lsm=", choose_lsm_order
);
429 /* Enable LSM order debugging. */
430 static int __init
enable_debug(char *str
)
435 __setup("lsm.debug", enable_debug
);
437 static bool match_last_lsm(const char *list
, const char *lsm
)
441 if (WARN_ON(!list
|| !lsm
))
443 last
= strrchr(list
, ',');
445 /* Pass the comma, strcmp() will check for '\0' */
449 return !strcmp(last
, lsm
);
452 static int lsm_append(const char *new, char **result
)
456 if (*result
== NULL
) {
457 *result
= kstrdup(new, GFP_KERNEL
);
461 /* Check if it is the last registered name */
462 if (match_last_lsm(*result
, new))
464 cp
= kasprintf(GFP_KERNEL
, "%s,%s", *result
, new);
474 * security_add_hooks - Add a modules hooks to the hook lists.
475 * @hooks: the hooks to add
476 * @count: the number of hooks to add
477 * @lsm: the name of the security module
479 * Each LSM has to register its hooks with the infrastructure.
481 void __init
security_add_hooks(struct security_hook_list
*hooks
, int count
,
486 for (i
= 0; i
< count
; i
++) {
488 hlist_add_tail_rcu(&hooks
[i
].list
, hooks
[i
].head
);
492 * Don't try to append during early_security_init(), we'll come back
493 * and fix this up afterwards.
495 if (slab_is_available()) {
496 if (lsm_append(lsm
, &lsm_names
) < 0)
497 panic("%s - Cannot get early memory.\n", __func__
);
501 int call_blocking_lsm_notifier(enum lsm_event event
, void *data
)
503 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain
,
506 EXPORT_SYMBOL(call_blocking_lsm_notifier
);
508 int register_blocking_lsm_notifier(struct notifier_block
*nb
)
510 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain
,
513 EXPORT_SYMBOL(register_blocking_lsm_notifier
);
515 int unregister_blocking_lsm_notifier(struct notifier_block
*nb
)
517 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain
,
520 EXPORT_SYMBOL(unregister_blocking_lsm_notifier
);
523 * lsm_cred_alloc - allocate a composite cred blob
524 * @cred: the cred that needs a blob
525 * @gfp: allocation type
527 * Allocate the cred blob for all the modules
529 * Returns 0, or -ENOMEM if memory can't be allocated.
531 static int lsm_cred_alloc(struct cred
*cred
, gfp_t gfp
)
533 if (blob_sizes
.lbs_cred
== 0) {
534 cred
->security
= NULL
;
538 cred
->security
= kzalloc(blob_sizes
.lbs_cred
, gfp
);
539 if (cred
->security
== NULL
)
545 * lsm_early_cred - during initialization allocate a composite cred blob
546 * @cred: the cred that needs a blob
548 * Allocate the cred blob for all the modules
550 static void __init
lsm_early_cred(struct cred
*cred
)
552 int rc
= lsm_cred_alloc(cred
, GFP_KERNEL
);
555 panic("%s: Early cred alloc failed.\n", __func__
);
559 * lsm_file_alloc - allocate a composite file blob
560 * @file: the file that needs a blob
562 * Allocate the file blob for all the modules
564 * Returns 0, or -ENOMEM if memory can't be allocated.
566 static int lsm_file_alloc(struct file
*file
)
568 if (!lsm_file_cache
) {
569 file
->f_security
= NULL
;
573 file
->f_security
= kmem_cache_zalloc(lsm_file_cache
, GFP_KERNEL
);
574 if (file
->f_security
== NULL
)
580 * lsm_inode_alloc - allocate a composite inode blob
581 * @inode: the inode that needs a blob
583 * Allocate the inode blob for all the modules
585 * Returns 0, or -ENOMEM if memory can't be allocated.
587 int lsm_inode_alloc(struct inode
*inode
)
589 if (!lsm_inode_cache
) {
590 inode
->i_security
= NULL
;
594 inode
->i_security
= kmem_cache_zalloc(lsm_inode_cache
, GFP_NOFS
);
595 if (inode
->i_security
== NULL
)
601 * lsm_task_alloc - allocate a composite task blob
602 * @task: the task that needs a blob
604 * Allocate the task blob for all the modules
606 * Returns 0, or -ENOMEM if memory can't be allocated.
608 static int lsm_task_alloc(struct task_struct
*task
)
610 if (blob_sizes
.lbs_task
== 0) {
611 task
->security
= NULL
;
615 task
->security
= kzalloc(blob_sizes
.lbs_task
, GFP_KERNEL
);
616 if (task
->security
== NULL
)
622 * lsm_ipc_alloc - allocate a composite ipc blob
623 * @kip: the ipc that needs a blob
625 * Allocate the ipc blob for all the modules
627 * Returns 0, or -ENOMEM if memory can't be allocated.
629 static int lsm_ipc_alloc(struct kern_ipc_perm
*kip
)
631 if (blob_sizes
.lbs_ipc
== 0) {
632 kip
->security
= NULL
;
636 kip
->security
= kzalloc(blob_sizes
.lbs_ipc
, GFP_KERNEL
);
637 if (kip
->security
== NULL
)
643 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
644 * @mp: the msg_msg that needs a blob
646 * Allocate the ipc blob for all the modules
648 * Returns 0, or -ENOMEM if memory can't be allocated.
650 static int lsm_msg_msg_alloc(struct msg_msg
*mp
)
652 if (blob_sizes
.lbs_msg_msg
== 0) {
657 mp
->security
= kzalloc(blob_sizes
.lbs_msg_msg
, GFP_KERNEL
);
658 if (mp
->security
== NULL
)
664 * lsm_early_task - during initialization allocate a composite task blob
665 * @task: the task that needs a blob
667 * Allocate the task blob for all the modules
669 static void __init
lsm_early_task(struct task_struct
*task
)
671 int rc
= lsm_task_alloc(task
);
674 panic("%s: Early task alloc failed.\n", __func__
);
678 * lsm_superblock_alloc - allocate a composite superblock blob
679 * @sb: the superblock that needs a blob
681 * Allocate the superblock blob for all the modules
683 * Returns 0, or -ENOMEM if memory can't be allocated.
685 static int lsm_superblock_alloc(struct super_block
*sb
)
687 if (blob_sizes
.lbs_superblock
== 0) {
688 sb
->s_security
= NULL
;
692 sb
->s_security
= kzalloc(blob_sizes
.lbs_superblock
, GFP_KERNEL
);
693 if (sb
->s_security
== NULL
)
699 * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
700 * can be accessed with:
702 * LSM_RET_DEFAULT(<hook_name>)
704 * The macros below define static constants for the default value of each
707 #define LSM_RET_DEFAULT(NAME) (NAME##_default)
708 #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
709 #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
710 static const int __maybe_unused LSM_RET_DEFAULT(NAME) = (DEFAULT);
711 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
712 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
714 #include <linux/lsm_hook_defs.h>
718 * Hook list operation macros.
721 * This is a hook that does not return a value.
724 * This is a hook that returns a value.
727 #define call_void_hook(FUNC, ...) \
729 struct security_hook_list *P; \
731 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
732 P->hook.FUNC(__VA_ARGS__); \
735 #define call_int_hook(FUNC, IRC, ...) ({ \
738 struct security_hook_list *P; \
740 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
741 RC = P->hook.FUNC(__VA_ARGS__); \
749 /* Security operations */
751 int security_binder_set_context_mgr(const struct cred
*mgr
)
753 return call_int_hook(binder_set_context_mgr
, 0, mgr
);
756 int security_binder_transaction(const struct cred
*from
,
757 const struct cred
*to
)
759 return call_int_hook(binder_transaction
, 0, from
, to
);
762 int security_binder_transfer_binder(const struct cred
*from
,
763 const struct cred
*to
)
765 return call_int_hook(binder_transfer_binder
, 0, from
, to
);
768 int security_binder_transfer_file(const struct cred
*from
,
769 const struct cred
*to
, struct file
*file
)
771 return call_int_hook(binder_transfer_file
, 0, from
, to
, file
);
774 int security_ptrace_access_check(struct task_struct
*child
, unsigned int mode
)
776 return call_int_hook(ptrace_access_check
, 0, child
, mode
);
779 int security_ptrace_traceme(struct task_struct
*parent
)
781 return call_int_hook(ptrace_traceme
, 0, parent
);
784 int security_capget(struct task_struct
*target
,
785 kernel_cap_t
*effective
,
786 kernel_cap_t
*inheritable
,
787 kernel_cap_t
*permitted
)
789 return call_int_hook(capget
, 0, target
,
790 effective
, inheritable
, permitted
);
793 int security_capset(struct cred
*new, const struct cred
*old
,
794 const kernel_cap_t
*effective
,
795 const kernel_cap_t
*inheritable
,
796 const kernel_cap_t
*permitted
)
798 return call_int_hook(capset
, 0, new, old
,
799 effective
, inheritable
, permitted
);
802 int security_capable(const struct cred
*cred
,
803 struct user_namespace
*ns
,
807 return call_int_hook(capable
, 0, cred
, ns
, cap
, opts
);
810 int security_quotactl(int cmds
, int type
, int id
, struct super_block
*sb
)
812 return call_int_hook(quotactl
, 0, cmds
, type
, id
, sb
);
815 int security_quota_on(struct dentry
*dentry
)
817 return call_int_hook(quota_on
, 0, dentry
);
820 int security_syslog(int type
)
822 return call_int_hook(syslog
, 0, type
);
825 int security_settime64(const struct timespec64
*ts
, const struct timezone
*tz
)
827 return call_int_hook(settime
, 0, ts
, tz
);
830 int security_vm_enough_memory_mm(struct mm_struct
*mm
, long pages
)
832 struct security_hook_list
*hp
;
833 int cap_sys_admin
= 1;
837 * The module will respond with a positive value if
838 * it thinks the __vm_enough_memory() call should be
839 * made with the cap_sys_admin set. If all of the modules
840 * agree that it should be set it will. If any module
841 * thinks it should not be set it won't.
843 hlist_for_each_entry(hp
, &security_hook_heads
.vm_enough_memory
, list
) {
844 rc
= hp
->hook
.vm_enough_memory(mm
, pages
);
850 return __vm_enough_memory(mm
, pages
, cap_sys_admin
);
853 int security_bprm_creds_for_exec(struct linux_binprm
*bprm
)
855 return call_int_hook(bprm_creds_for_exec
, 0, bprm
);
858 int security_bprm_creds_from_file(struct linux_binprm
*bprm
, struct file
*file
)
860 return call_int_hook(bprm_creds_from_file
, 0, bprm
, file
);
863 int security_bprm_check(struct linux_binprm
*bprm
)
867 ret
= call_int_hook(bprm_check_security
, 0, bprm
);
870 return ima_bprm_check(bprm
);
873 void security_bprm_committing_creds(struct linux_binprm
*bprm
)
875 call_void_hook(bprm_committing_creds
, bprm
);
878 void security_bprm_committed_creds(struct linux_binprm
*bprm
)
880 call_void_hook(bprm_committed_creds
, bprm
);
883 int security_fs_context_dup(struct fs_context
*fc
, struct fs_context
*src_fc
)
885 return call_int_hook(fs_context_dup
, 0, fc
, src_fc
);
888 int security_fs_context_parse_param(struct fs_context
*fc
,
889 struct fs_parameter
*param
)
891 struct security_hook_list
*hp
;
895 hlist_for_each_entry(hp
, &security_hook_heads
.fs_context_parse_param
,
897 trc
= hp
->hook
.fs_context_parse_param(fc
, param
);
900 else if (trc
!= -ENOPARAM
)
906 int security_sb_alloc(struct super_block
*sb
)
908 int rc
= lsm_superblock_alloc(sb
);
912 rc
= call_int_hook(sb_alloc_security
, 0, sb
);
914 security_sb_free(sb
);
918 void security_sb_delete(struct super_block
*sb
)
920 call_void_hook(sb_delete
, sb
);
923 void security_sb_free(struct super_block
*sb
)
925 call_void_hook(sb_free_security
, sb
);
926 kfree(sb
->s_security
);
927 sb
->s_security
= NULL
;
930 void security_free_mnt_opts(void **mnt_opts
)
934 call_void_hook(sb_free_mnt_opts
, *mnt_opts
);
937 EXPORT_SYMBOL(security_free_mnt_opts
);
939 int security_sb_eat_lsm_opts(char *options
, void **mnt_opts
)
941 return call_int_hook(sb_eat_lsm_opts
, 0, options
, mnt_opts
);
943 EXPORT_SYMBOL(security_sb_eat_lsm_opts
);
945 int security_sb_mnt_opts_compat(struct super_block
*sb
,
948 return call_int_hook(sb_mnt_opts_compat
, 0, sb
, mnt_opts
);
950 EXPORT_SYMBOL(security_sb_mnt_opts_compat
);
952 int security_sb_remount(struct super_block
*sb
,
955 return call_int_hook(sb_remount
, 0, sb
, mnt_opts
);
957 EXPORT_SYMBOL(security_sb_remount
);
959 int security_sb_kern_mount(struct super_block
*sb
)
961 return call_int_hook(sb_kern_mount
, 0, sb
);
964 int security_sb_show_options(struct seq_file
*m
, struct super_block
*sb
)
966 return call_int_hook(sb_show_options
, 0, m
, sb
);
969 int security_sb_statfs(struct dentry
*dentry
)
971 return call_int_hook(sb_statfs
, 0, dentry
);
974 int security_sb_mount(const char *dev_name
, const struct path
*path
,
975 const char *type
, unsigned long flags
, void *data
)
977 return call_int_hook(sb_mount
, 0, dev_name
, path
, type
, flags
, data
);
980 int security_sb_umount(struct vfsmount
*mnt
, int flags
)
982 return call_int_hook(sb_umount
, 0, mnt
, flags
);
985 int security_sb_pivotroot(const struct path
*old_path
, const struct path
*new_path
)
987 return call_int_hook(sb_pivotroot
, 0, old_path
, new_path
);
990 int security_sb_set_mnt_opts(struct super_block
*sb
,
992 unsigned long kern_flags
,
993 unsigned long *set_kern_flags
)
995 return call_int_hook(sb_set_mnt_opts
,
996 mnt_opts
? -EOPNOTSUPP
: 0, sb
,
997 mnt_opts
, kern_flags
, set_kern_flags
);
999 EXPORT_SYMBOL(security_sb_set_mnt_opts
);
1001 int security_sb_clone_mnt_opts(const struct super_block
*oldsb
,
1002 struct super_block
*newsb
,
1003 unsigned long kern_flags
,
1004 unsigned long *set_kern_flags
)
1006 return call_int_hook(sb_clone_mnt_opts
, 0, oldsb
, newsb
,
1007 kern_flags
, set_kern_flags
);
1009 EXPORT_SYMBOL(security_sb_clone_mnt_opts
);
1011 int security_move_mount(const struct path
*from_path
, const struct path
*to_path
)
1013 return call_int_hook(move_mount
, 0, from_path
, to_path
);
1016 int security_path_notify(const struct path
*path
, u64 mask
,
1017 unsigned int obj_type
)
1019 return call_int_hook(path_notify
, 0, path
, mask
, obj_type
);
1022 int security_inode_alloc(struct inode
*inode
)
1024 int rc
= lsm_inode_alloc(inode
);
1028 rc
= call_int_hook(inode_alloc_security
, 0, inode
);
1030 security_inode_free(inode
);
1034 static void inode_free_by_rcu(struct rcu_head
*head
)
1037 * The rcu head is at the start of the inode blob
1039 kmem_cache_free(lsm_inode_cache
, head
);
1042 void security_inode_free(struct inode
*inode
)
1044 integrity_inode_free(inode
);
1045 call_void_hook(inode_free_security
, inode
);
1047 * The inode may still be referenced in a path walk and
1048 * a call to security_inode_permission() can be made
1049 * after inode_free_security() is called. Ideally, the VFS
1050 * wouldn't do this, but fixing that is a much harder
1051 * job. For now, simply free the i_security via RCU, and
1052 * leave the current inode->i_security pointer intact.
1053 * The inode will be freed after the RCU grace period too.
1055 if (inode
->i_security
)
1056 call_rcu((struct rcu_head
*)inode
->i_security
,
1060 int security_dentry_init_security(struct dentry
*dentry
, int mode
,
1061 const struct qstr
*name
,
1062 const char **xattr_name
, void **ctx
,
1065 struct security_hook_list
*hp
;
1069 * Only one module will provide a security context.
1071 hlist_for_each_entry(hp
, &security_hook_heads
.dentry_init_security
, list
) {
1072 rc
= hp
->hook
.dentry_init_security(dentry
, mode
, name
,
1073 xattr_name
, ctx
, ctxlen
);
1074 if (rc
!= LSM_RET_DEFAULT(dentry_init_security
))
1077 return LSM_RET_DEFAULT(dentry_init_security
);
1079 EXPORT_SYMBOL(security_dentry_init_security
);
1081 int security_dentry_create_files_as(struct dentry
*dentry
, int mode
,
1083 const struct cred
*old
, struct cred
*new)
1085 return call_int_hook(dentry_create_files_as
, 0, dentry
, mode
,
1088 EXPORT_SYMBOL(security_dentry_create_files_as
);
1090 int security_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1091 const struct qstr
*qstr
,
1092 const initxattrs initxattrs
, void *fs_data
)
1094 struct xattr new_xattrs
[MAX_LSM_EVM_XATTR
+ 1];
1095 struct xattr
*lsm_xattr
, *evm_xattr
, *xattr
;
1098 if (unlikely(IS_PRIVATE(inode
)))
1102 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
,
1103 dir
, qstr
, NULL
, NULL
, NULL
);
1104 memset(new_xattrs
, 0, sizeof(new_xattrs
));
1105 lsm_xattr
= new_xattrs
;
1106 ret
= call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
, qstr
,
1109 &lsm_xattr
->value_len
);
1113 evm_xattr
= lsm_xattr
+ 1;
1114 ret
= evm_inode_init_security(inode
, lsm_xattr
, evm_xattr
);
1117 ret
= initxattrs(inode
, new_xattrs
, fs_data
);
1119 for (xattr
= new_xattrs
; xattr
->value
!= NULL
; xattr
++)
1120 kfree(xattr
->value
);
1121 return (ret
== -EOPNOTSUPP
) ? 0 : ret
;
1123 EXPORT_SYMBOL(security_inode_init_security
);
1125 int security_inode_init_security_anon(struct inode
*inode
,
1126 const struct qstr
*name
,
1127 const struct inode
*context_inode
)
1129 return call_int_hook(inode_init_security_anon
, 0, inode
, name
,
1133 int security_old_inode_init_security(struct inode
*inode
, struct inode
*dir
,
1134 const struct qstr
*qstr
, const char **name
,
1135 void **value
, size_t *len
)
1137 if (unlikely(IS_PRIVATE(inode
)))
1139 return call_int_hook(inode_init_security
, -EOPNOTSUPP
, inode
, dir
,
1140 qstr
, name
, value
, len
);
1142 EXPORT_SYMBOL(security_old_inode_init_security
);
1144 #ifdef CONFIG_SECURITY_PATH
1145 int security_path_mknod(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
,
1148 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1150 return call_int_hook(path_mknod
, 0, dir
, dentry
, mode
, dev
);
1152 EXPORT_SYMBOL(security_path_mknod
);
1154 int security_path_mkdir(const struct path
*dir
, struct dentry
*dentry
, umode_t mode
)
1156 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1158 return call_int_hook(path_mkdir
, 0, dir
, dentry
, mode
);
1160 EXPORT_SYMBOL(security_path_mkdir
);
1162 int security_path_rmdir(const struct path
*dir
, struct dentry
*dentry
)
1164 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1166 return call_int_hook(path_rmdir
, 0, dir
, dentry
);
1169 int security_path_unlink(const struct path
*dir
, struct dentry
*dentry
)
1171 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1173 return call_int_hook(path_unlink
, 0, dir
, dentry
);
1175 EXPORT_SYMBOL(security_path_unlink
);
1177 int security_path_symlink(const struct path
*dir
, struct dentry
*dentry
,
1178 const char *old_name
)
1180 if (unlikely(IS_PRIVATE(d_backing_inode(dir
->dentry
))))
1182 return call_int_hook(path_symlink
, 0, dir
, dentry
, old_name
);
1185 int security_path_link(struct dentry
*old_dentry
, const struct path
*new_dir
,
1186 struct dentry
*new_dentry
)
1188 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1190 return call_int_hook(path_link
, 0, old_dentry
, new_dir
, new_dentry
);
1193 int security_path_rename(const struct path
*old_dir
, struct dentry
*old_dentry
,
1194 const struct path
*new_dir
, struct dentry
*new_dentry
,
1197 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1198 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1201 return call_int_hook(path_rename
, 0, old_dir
, old_dentry
, new_dir
,
1204 EXPORT_SYMBOL(security_path_rename
);
1206 int security_path_truncate(const struct path
*path
)
1208 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1210 return call_int_hook(path_truncate
, 0, path
);
1213 int security_path_chmod(const struct path
*path
, umode_t mode
)
1215 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1217 return call_int_hook(path_chmod
, 0, path
, mode
);
1220 int security_path_chown(const struct path
*path
, kuid_t uid
, kgid_t gid
)
1222 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1224 return call_int_hook(path_chown
, 0, path
, uid
, gid
);
1227 int security_path_chroot(const struct path
*path
)
1229 return call_int_hook(path_chroot
, 0, path
);
1233 int security_inode_create(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1235 if (unlikely(IS_PRIVATE(dir
)))
1237 return call_int_hook(inode_create
, 0, dir
, dentry
, mode
);
1239 EXPORT_SYMBOL_GPL(security_inode_create
);
1241 int security_inode_link(struct dentry
*old_dentry
, struct inode
*dir
,
1242 struct dentry
*new_dentry
)
1244 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
))))
1246 return call_int_hook(inode_link
, 0, old_dentry
, dir
, new_dentry
);
1249 int security_inode_unlink(struct inode
*dir
, struct dentry
*dentry
)
1251 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1253 return call_int_hook(inode_unlink
, 0, dir
, dentry
);
1256 int security_inode_symlink(struct inode
*dir
, struct dentry
*dentry
,
1257 const char *old_name
)
1259 if (unlikely(IS_PRIVATE(dir
)))
1261 return call_int_hook(inode_symlink
, 0, dir
, dentry
, old_name
);
1264 int security_inode_mkdir(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
)
1266 if (unlikely(IS_PRIVATE(dir
)))
1268 return call_int_hook(inode_mkdir
, 0, dir
, dentry
, mode
);
1270 EXPORT_SYMBOL_GPL(security_inode_mkdir
);
1272 int security_inode_rmdir(struct inode
*dir
, struct dentry
*dentry
)
1274 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1276 return call_int_hook(inode_rmdir
, 0, dir
, dentry
);
1279 int security_inode_mknod(struct inode
*dir
, struct dentry
*dentry
, umode_t mode
, dev_t dev
)
1281 if (unlikely(IS_PRIVATE(dir
)))
1283 return call_int_hook(inode_mknod
, 0, dir
, dentry
, mode
, dev
);
1286 int security_inode_rename(struct inode
*old_dir
, struct dentry
*old_dentry
,
1287 struct inode
*new_dir
, struct dentry
*new_dentry
,
1290 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry
)) ||
1291 (d_is_positive(new_dentry
) && IS_PRIVATE(d_backing_inode(new_dentry
)))))
1294 if (flags
& RENAME_EXCHANGE
) {
1295 int err
= call_int_hook(inode_rename
, 0, new_dir
, new_dentry
,
1296 old_dir
, old_dentry
);
1301 return call_int_hook(inode_rename
, 0, old_dir
, old_dentry
,
1302 new_dir
, new_dentry
);
1305 int security_inode_readlink(struct dentry
*dentry
)
1307 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1309 return call_int_hook(inode_readlink
, 0, dentry
);
1312 int security_inode_follow_link(struct dentry
*dentry
, struct inode
*inode
,
1315 if (unlikely(IS_PRIVATE(inode
)))
1317 return call_int_hook(inode_follow_link
, 0, dentry
, inode
, rcu
);
1320 int security_inode_permission(struct inode
*inode
, int mask
)
1322 if (unlikely(IS_PRIVATE(inode
)))
1324 return call_int_hook(inode_permission
, 0, inode
, mask
);
1327 int security_inode_setattr(struct dentry
*dentry
, struct iattr
*attr
)
1331 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1333 ret
= call_int_hook(inode_setattr
, 0, dentry
, attr
);
1336 return evm_inode_setattr(dentry
, attr
);
1338 EXPORT_SYMBOL_GPL(security_inode_setattr
);
1340 int security_inode_getattr(const struct path
*path
)
1342 if (unlikely(IS_PRIVATE(d_backing_inode(path
->dentry
))))
1344 return call_int_hook(inode_getattr
, 0, path
);
1347 int security_inode_setxattr(struct user_namespace
*mnt_userns
,
1348 struct dentry
*dentry
, const char *name
,
1349 const void *value
, size_t size
, int flags
)
1353 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1356 * SELinux and Smack integrate the cap call,
1357 * so assume that all LSMs supplying this call do so.
1359 ret
= call_int_hook(inode_setxattr
, 1, mnt_userns
, dentry
, name
, value
,
1363 ret
= cap_inode_setxattr(dentry
, name
, value
, size
, flags
);
1366 ret
= ima_inode_setxattr(dentry
, name
, value
, size
);
1369 return evm_inode_setxattr(mnt_userns
, dentry
, name
, value
, size
);
1372 void security_inode_post_setxattr(struct dentry
*dentry
, const char *name
,
1373 const void *value
, size_t size
, int flags
)
1375 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1377 call_void_hook(inode_post_setxattr
, dentry
, name
, value
, size
, flags
);
1378 evm_inode_post_setxattr(dentry
, name
, value
, size
);
1381 int security_inode_getxattr(struct dentry
*dentry
, const char *name
)
1383 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1385 return call_int_hook(inode_getxattr
, 0, dentry
, name
);
1388 int security_inode_listxattr(struct dentry
*dentry
)
1390 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1392 return call_int_hook(inode_listxattr
, 0, dentry
);
1395 int security_inode_removexattr(struct user_namespace
*mnt_userns
,
1396 struct dentry
*dentry
, const char *name
)
1400 if (unlikely(IS_PRIVATE(d_backing_inode(dentry
))))
1403 * SELinux and Smack integrate the cap call,
1404 * so assume that all LSMs supplying this call do so.
1406 ret
= call_int_hook(inode_removexattr
, 1, mnt_userns
, dentry
, name
);
1408 ret
= cap_inode_removexattr(mnt_userns
, dentry
, name
);
1411 ret
= ima_inode_removexattr(dentry
, name
);
1414 return evm_inode_removexattr(mnt_userns
, dentry
, name
);
1417 int security_inode_need_killpriv(struct dentry
*dentry
)
1419 return call_int_hook(inode_need_killpriv
, 0, dentry
);
1422 int security_inode_killpriv(struct user_namespace
*mnt_userns
,
1423 struct dentry
*dentry
)
1425 return call_int_hook(inode_killpriv
, 0, mnt_userns
, dentry
);
1428 int security_inode_getsecurity(struct user_namespace
*mnt_userns
,
1429 struct inode
*inode
, const char *name
,
1430 void **buffer
, bool alloc
)
1432 struct security_hook_list
*hp
;
1435 if (unlikely(IS_PRIVATE(inode
)))
1436 return LSM_RET_DEFAULT(inode_getsecurity
);
1438 * Only one module will provide an attribute with a given name.
1440 hlist_for_each_entry(hp
, &security_hook_heads
.inode_getsecurity
, list
) {
1441 rc
= hp
->hook
.inode_getsecurity(mnt_userns
, inode
, name
, buffer
, alloc
);
1442 if (rc
!= LSM_RET_DEFAULT(inode_getsecurity
))
1445 return LSM_RET_DEFAULT(inode_getsecurity
);
1448 int security_inode_setsecurity(struct inode
*inode
, const char *name
, const void *value
, size_t size
, int flags
)
1450 struct security_hook_list
*hp
;
1453 if (unlikely(IS_PRIVATE(inode
)))
1454 return LSM_RET_DEFAULT(inode_setsecurity
);
1456 * Only one module will provide an attribute with a given name.
1458 hlist_for_each_entry(hp
, &security_hook_heads
.inode_setsecurity
, list
) {
1459 rc
= hp
->hook
.inode_setsecurity(inode
, name
, value
, size
,
1461 if (rc
!= LSM_RET_DEFAULT(inode_setsecurity
))
1464 return LSM_RET_DEFAULT(inode_setsecurity
);
1467 int security_inode_listsecurity(struct inode
*inode
, char *buffer
, size_t buffer_size
)
1469 if (unlikely(IS_PRIVATE(inode
)))
1471 return call_int_hook(inode_listsecurity
, 0, inode
, buffer
, buffer_size
);
1473 EXPORT_SYMBOL(security_inode_listsecurity
);
1475 void security_inode_getsecid(struct inode
*inode
, u32
*secid
)
1477 call_void_hook(inode_getsecid
, inode
, secid
);
1480 int security_inode_copy_up(struct dentry
*src
, struct cred
**new)
1482 return call_int_hook(inode_copy_up
, 0, src
, new);
1484 EXPORT_SYMBOL(security_inode_copy_up
);
1486 int security_inode_copy_up_xattr(const char *name
)
1488 struct security_hook_list
*hp
;
1492 * The implementation can return 0 (accept the xattr), 1 (discard the
1493 * xattr), -EOPNOTSUPP if it does not know anything about the xattr or
1494 * any other error code incase of an error.
1496 hlist_for_each_entry(hp
,
1497 &security_hook_heads
.inode_copy_up_xattr
, list
) {
1498 rc
= hp
->hook
.inode_copy_up_xattr(name
);
1499 if (rc
!= LSM_RET_DEFAULT(inode_copy_up_xattr
))
1503 return LSM_RET_DEFAULT(inode_copy_up_xattr
);
1505 EXPORT_SYMBOL(security_inode_copy_up_xattr
);
1507 int security_kernfs_init_security(struct kernfs_node
*kn_dir
,
1508 struct kernfs_node
*kn
)
1510 return call_int_hook(kernfs_init_security
, 0, kn_dir
, kn
);
1513 int security_file_permission(struct file
*file
, int mask
)
1517 ret
= call_int_hook(file_permission
, 0, file
, mask
);
1521 return fsnotify_perm(file
, mask
);
1524 int security_file_alloc(struct file
*file
)
1526 int rc
= lsm_file_alloc(file
);
1530 rc
= call_int_hook(file_alloc_security
, 0, file
);
1532 security_file_free(file
);
1536 void security_file_free(struct file
*file
)
1540 call_void_hook(file_free_security
, file
);
1542 blob
= file
->f_security
;
1544 file
->f_security
= NULL
;
1545 kmem_cache_free(lsm_file_cache
, blob
);
1549 int security_file_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1551 return call_int_hook(file_ioctl
, 0, file
, cmd
, arg
);
1553 EXPORT_SYMBOL_GPL(security_file_ioctl
);
1555 static inline unsigned long mmap_prot(struct file
*file
, unsigned long prot
)
1558 * Does we have PROT_READ and does the application expect
1559 * it to imply PROT_EXEC? If not, nothing to talk about...
1561 if ((prot
& (PROT_READ
| PROT_EXEC
)) != PROT_READ
)
1563 if (!(current
->personality
& READ_IMPLIES_EXEC
))
1566 * if that's an anonymous mapping, let it.
1569 return prot
| PROT_EXEC
;
1571 * ditto if it's not on noexec mount, except that on !MMU we need
1572 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1574 if (!path_noexec(&file
->f_path
)) {
1576 if (file
->f_op
->mmap_capabilities
) {
1577 unsigned caps
= file
->f_op
->mmap_capabilities(file
);
1578 if (!(caps
& NOMMU_MAP_EXEC
))
1582 return prot
| PROT_EXEC
;
1584 /* anything on noexec mount won't get PROT_EXEC */
1588 int security_mmap_file(struct file
*file
, unsigned long prot
,
1589 unsigned long flags
)
1592 ret
= call_int_hook(mmap_file
, 0, file
, prot
,
1593 mmap_prot(file
, prot
), flags
);
1596 return ima_file_mmap(file
, prot
);
1599 int security_mmap_addr(unsigned long addr
)
1601 return call_int_hook(mmap_addr
, 0, addr
);
1604 int security_file_mprotect(struct vm_area_struct
*vma
, unsigned long reqprot
,
1609 ret
= call_int_hook(file_mprotect
, 0, vma
, reqprot
, prot
);
1612 return ima_file_mprotect(vma
, prot
);
1615 int security_file_lock(struct file
*file
, unsigned int cmd
)
1617 return call_int_hook(file_lock
, 0, file
, cmd
);
1620 int security_file_fcntl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
1622 return call_int_hook(file_fcntl
, 0, file
, cmd
, arg
);
1625 void security_file_set_fowner(struct file
*file
)
1627 call_void_hook(file_set_fowner
, file
);
1630 int security_file_send_sigiotask(struct task_struct
*tsk
,
1631 struct fown_struct
*fown
, int sig
)
1633 return call_int_hook(file_send_sigiotask
, 0, tsk
, fown
, sig
);
1636 int security_file_receive(struct file
*file
)
1638 return call_int_hook(file_receive
, 0, file
);
1641 int security_file_open(struct file
*file
)
1645 ret
= call_int_hook(file_open
, 0, file
);
1649 return fsnotify_perm(file
, MAY_OPEN
);
1652 int security_task_alloc(struct task_struct
*task
, unsigned long clone_flags
)
1654 int rc
= lsm_task_alloc(task
);
1658 rc
= call_int_hook(task_alloc
, 0, task
, clone_flags
);
1660 security_task_free(task
);
1664 void security_task_free(struct task_struct
*task
)
1666 call_void_hook(task_free
, task
);
1668 kfree(task
->security
);
1669 task
->security
= NULL
;
1672 int security_cred_alloc_blank(struct cred
*cred
, gfp_t gfp
)
1674 int rc
= lsm_cred_alloc(cred
, gfp
);
1679 rc
= call_int_hook(cred_alloc_blank
, 0, cred
, gfp
);
1681 security_cred_free(cred
);
1685 void security_cred_free(struct cred
*cred
)
1688 * There is a failure case in prepare_creds() that
1689 * may result in a call here with ->security being NULL.
1691 if (unlikely(cred
->security
== NULL
))
1694 call_void_hook(cred_free
, cred
);
1696 kfree(cred
->security
);
1697 cred
->security
= NULL
;
1700 int security_prepare_creds(struct cred
*new, const struct cred
*old
, gfp_t gfp
)
1702 int rc
= lsm_cred_alloc(new, gfp
);
1707 rc
= call_int_hook(cred_prepare
, 0, new, old
, gfp
);
1709 security_cred_free(new);
1713 void security_transfer_creds(struct cred
*new, const struct cred
*old
)
1715 call_void_hook(cred_transfer
, new, old
);
1718 void security_cred_getsecid(const struct cred
*c
, u32
*secid
)
1721 call_void_hook(cred_getsecid
, c
, secid
);
1723 EXPORT_SYMBOL(security_cred_getsecid
);
1725 int security_kernel_act_as(struct cred
*new, u32 secid
)
1727 return call_int_hook(kernel_act_as
, 0, new, secid
);
1730 int security_kernel_create_files_as(struct cred
*new, struct inode
*inode
)
1732 return call_int_hook(kernel_create_files_as
, 0, new, inode
);
1735 int security_kernel_module_request(char *kmod_name
)
1739 ret
= call_int_hook(kernel_module_request
, 0, kmod_name
);
1742 return integrity_kernel_module_request(kmod_name
);
1745 int security_kernel_read_file(struct file
*file
, enum kernel_read_file_id id
,
1750 ret
= call_int_hook(kernel_read_file
, 0, file
, id
, contents
);
1753 return ima_read_file(file
, id
, contents
);
1755 EXPORT_SYMBOL_GPL(security_kernel_read_file
);
1757 int security_kernel_post_read_file(struct file
*file
, char *buf
, loff_t size
,
1758 enum kernel_read_file_id id
)
1762 ret
= call_int_hook(kernel_post_read_file
, 0, file
, buf
, size
, id
);
1765 return ima_post_read_file(file
, buf
, size
, id
);
1767 EXPORT_SYMBOL_GPL(security_kernel_post_read_file
);
1769 int security_kernel_load_data(enum kernel_load_data_id id
, bool contents
)
1773 ret
= call_int_hook(kernel_load_data
, 0, id
, contents
);
1776 return ima_load_data(id
, contents
);
1778 EXPORT_SYMBOL_GPL(security_kernel_load_data
);
1780 int security_kernel_post_load_data(char *buf
, loff_t size
,
1781 enum kernel_load_data_id id
,
1786 ret
= call_int_hook(kernel_post_load_data
, 0, buf
, size
, id
,
1790 return ima_post_load_data(buf
, size
, id
, description
);
1792 EXPORT_SYMBOL_GPL(security_kernel_post_load_data
);
1794 int security_task_fix_setuid(struct cred
*new, const struct cred
*old
,
1797 return call_int_hook(task_fix_setuid
, 0, new, old
, flags
);
1800 int security_task_fix_setgid(struct cred
*new, const struct cred
*old
,
1803 return call_int_hook(task_fix_setgid
, 0, new, old
, flags
);
1806 int security_task_setpgid(struct task_struct
*p
, pid_t pgid
)
1808 return call_int_hook(task_setpgid
, 0, p
, pgid
);
1811 int security_task_getpgid(struct task_struct
*p
)
1813 return call_int_hook(task_getpgid
, 0, p
);
1816 int security_task_getsid(struct task_struct
*p
)
1818 return call_int_hook(task_getsid
, 0, p
);
1821 void security_current_getsecid_subj(u32
*secid
)
1824 call_void_hook(current_getsecid_subj
, secid
);
1826 EXPORT_SYMBOL(security_current_getsecid_subj
);
1828 void security_task_getsecid_obj(struct task_struct
*p
, u32
*secid
)
1831 call_void_hook(task_getsecid_obj
, p
, secid
);
1833 EXPORT_SYMBOL(security_task_getsecid_obj
);
1835 int security_task_setnice(struct task_struct
*p
, int nice
)
1837 return call_int_hook(task_setnice
, 0, p
, nice
);
1840 int security_task_setioprio(struct task_struct
*p
, int ioprio
)
1842 return call_int_hook(task_setioprio
, 0, p
, ioprio
);
1845 int security_task_getioprio(struct task_struct
*p
)
1847 return call_int_hook(task_getioprio
, 0, p
);
1850 int security_task_prlimit(const struct cred
*cred
, const struct cred
*tcred
,
1853 return call_int_hook(task_prlimit
, 0, cred
, tcred
, flags
);
1856 int security_task_setrlimit(struct task_struct
*p
, unsigned int resource
,
1857 struct rlimit
*new_rlim
)
1859 return call_int_hook(task_setrlimit
, 0, p
, resource
, new_rlim
);
1862 int security_task_setscheduler(struct task_struct
*p
)
1864 return call_int_hook(task_setscheduler
, 0, p
);
1867 int security_task_getscheduler(struct task_struct
*p
)
1869 return call_int_hook(task_getscheduler
, 0, p
);
1872 int security_task_movememory(struct task_struct
*p
)
1874 return call_int_hook(task_movememory
, 0, p
);
1877 int security_task_kill(struct task_struct
*p
, struct kernel_siginfo
*info
,
1878 int sig
, const struct cred
*cred
)
1880 return call_int_hook(task_kill
, 0, p
, info
, sig
, cred
);
1883 int security_task_prctl(int option
, unsigned long arg2
, unsigned long arg3
,
1884 unsigned long arg4
, unsigned long arg5
)
1887 int rc
= LSM_RET_DEFAULT(task_prctl
);
1888 struct security_hook_list
*hp
;
1890 hlist_for_each_entry(hp
, &security_hook_heads
.task_prctl
, list
) {
1891 thisrc
= hp
->hook
.task_prctl(option
, arg2
, arg3
, arg4
, arg5
);
1892 if (thisrc
!= LSM_RET_DEFAULT(task_prctl
)) {
1901 void security_task_to_inode(struct task_struct
*p
, struct inode
*inode
)
1903 call_void_hook(task_to_inode
, p
, inode
);
1906 int security_ipc_permission(struct kern_ipc_perm
*ipcp
, short flag
)
1908 return call_int_hook(ipc_permission
, 0, ipcp
, flag
);
1911 void security_ipc_getsecid(struct kern_ipc_perm
*ipcp
, u32
*secid
)
1914 call_void_hook(ipc_getsecid
, ipcp
, secid
);
1917 int security_msg_msg_alloc(struct msg_msg
*msg
)
1919 int rc
= lsm_msg_msg_alloc(msg
);
1923 rc
= call_int_hook(msg_msg_alloc_security
, 0, msg
);
1925 security_msg_msg_free(msg
);
1929 void security_msg_msg_free(struct msg_msg
*msg
)
1931 call_void_hook(msg_msg_free_security
, msg
);
1932 kfree(msg
->security
);
1933 msg
->security
= NULL
;
1936 int security_msg_queue_alloc(struct kern_ipc_perm
*msq
)
1938 int rc
= lsm_ipc_alloc(msq
);
1942 rc
= call_int_hook(msg_queue_alloc_security
, 0, msq
);
1944 security_msg_queue_free(msq
);
1948 void security_msg_queue_free(struct kern_ipc_perm
*msq
)
1950 call_void_hook(msg_queue_free_security
, msq
);
1951 kfree(msq
->security
);
1952 msq
->security
= NULL
;
1955 int security_msg_queue_associate(struct kern_ipc_perm
*msq
, int msqflg
)
1957 return call_int_hook(msg_queue_associate
, 0, msq
, msqflg
);
1960 int security_msg_queue_msgctl(struct kern_ipc_perm
*msq
, int cmd
)
1962 return call_int_hook(msg_queue_msgctl
, 0, msq
, cmd
);
1965 int security_msg_queue_msgsnd(struct kern_ipc_perm
*msq
,
1966 struct msg_msg
*msg
, int msqflg
)
1968 return call_int_hook(msg_queue_msgsnd
, 0, msq
, msg
, msqflg
);
1971 int security_msg_queue_msgrcv(struct kern_ipc_perm
*msq
, struct msg_msg
*msg
,
1972 struct task_struct
*target
, long type
, int mode
)
1974 return call_int_hook(msg_queue_msgrcv
, 0, msq
, msg
, target
, type
, mode
);
1977 int security_shm_alloc(struct kern_ipc_perm
*shp
)
1979 int rc
= lsm_ipc_alloc(shp
);
1983 rc
= call_int_hook(shm_alloc_security
, 0, shp
);
1985 security_shm_free(shp
);
1989 void security_shm_free(struct kern_ipc_perm
*shp
)
1991 call_void_hook(shm_free_security
, shp
);
1992 kfree(shp
->security
);
1993 shp
->security
= NULL
;
1996 int security_shm_associate(struct kern_ipc_perm
*shp
, int shmflg
)
1998 return call_int_hook(shm_associate
, 0, shp
, shmflg
);
2001 int security_shm_shmctl(struct kern_ipc_perm
*shp
, int cmd
)
2003 return call_int_hook(shm_shmctl
, 0, shp
, cmd
);
2006 int security_shm_shmat(struct kern_ipc_perm
*shp
, char __user
*shmaddr
, int shmflg
)
2008 return call_int_hook(shm_shmat
, 0, shp
, shmaddr
, shmflg
);
2011 int security_sem_alloc(struct kern_ipc_perm
*sma
)
2013 int rc
= lsm_ipc_alloc(sma
);
2017 rc
= call_int_hook(sem_alloc_security
, 0, sma
);
2019 security_sem_free(sma
);
2023 void security_sem_free(struct kern_ipc_perm
*sma
)
2025 call_void_hook(sem_free_security
, sma
);
2026 kfree(sma
->security
);
2027 sma
->security
= NULL
;
2030 int security_sem_associate(struct kern_ipc_perm
*sma
, int semflg
)
2032 return call_int_hook(sem_associate
, 0, sma
, semflg
);
2035 int security_sem_semctl(struct kern_ipc_perm
*sma
, int cmd
)
2037 return call_int_hook(sem_semctl
, 0, sma
, cmd
);
2040 int security_sem_semop(struct kern_ipc_perm
*sma
, struct sembuf
*sops
,
2041 unsigned nsops
, int alter
)
2043 return call_int_hook(sem_semop
, 0, sma
, sops
, nsops
, alter
);
2046 void security_d_instantiate(struct dentry
*dentry
, struct inode
*inode
)
2048 if (unlikely(inode
&& IS_PRIVATE(inode
)))
2050 call_void_hook(d_instantiate
, dentry
, inode
);
2052 EXPORT_SYMBOL(security_d_instantiate
);
2054 int security_getprocattr(struct task_struct
*p
, const char *lsm
, char *name
,
2057 struct security_hook_list
*hp
;
2059 hlist_for_each_entry(hp
, &security_hook_heads
.getprocattr
, list
) {
2060 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
2062 return hp
->hook
.getprocattr(p
, name
, value
);
2064 return LSM_RET_DEFAULT(getprocattr
);
2067 int security_setprocattr(const char *lsm
, const char *name
, void *value
,
2070 struct security_hook_list
*hp
;
2072 hlist_for_each_entry(hp
, &security_hook_heads
.setprocattr
, list
) {
2073 if (lsm
!= NULL
&& strcmp(lsm
, hp
->lsm
))
2075 return hp
->hook
.setprocattr(name
, value
, size
);
2077 return LSM_RET_DEFAULT(setprocattr
);
2080 int security_netlink_send(struct sock
*sk
, struct sk_buff
*skb
)
2082 return call_int_hook(netlink_send
, 0, sk
, skb
);
2085 int security_ismaclabel(const char *name
)
2087 return call_int_hook(ismaclabel
, 0, name
);
2089 EXPORT_SYMBOL(security_ismaclabel
);
2091 int security_secid_to_secctx(u32 secid
, char **secdata
, u32
*seclen
)
2093 struct security_hook_list
*hp
;
2097 * Currently, only one LSM can implement secid_to_secctx (i.e this
2098 * LSM hook is not "stackable").
2100 hlist_for_each_entry(hp
, &security_hook_heads
.secid_to_secctx
, list
) {
2101 rc
= hp
->hook
.secid_to_secctx(secid
, secdata
, seclen
);
2102 if (rc
!= LSM_RET_DEFAULT(secid_to_secctx
))
2106 return LSM_RET_DEFAULT(secid_to_secctx
);
2108 EXPORT_SYMBOL(security_secid_to_secctx
);
2110 int security_secctx_to_secid(const char *secdata
, u32 seclen
, u32
*secid
)
2113 return call_int_hook(secctx_to_secid
, 0, secdata
, seclen
, secid
);
2115 EXPORT_SYMBOL(security_secctx_to_secid
);
2117 void security_release_secctx(char *secdata
, u32 seclen
)
2119 call_void_hook(release_secctx
, secdata
, seclen
);
2121 EXPORT_SYMBOL(security_release_secctx
);
2123 void security_inode_invalidate_secctx(struct inode
*inode
)
2125 call_void_hook(inode_invalidate_secctx
, inode
);
2127 EXPORT_SYMBOL(security_inode_invalidate_secctx
);
2129 int security_inode_notifysecctx(struct inode
*inode
, void *ctx
, u32 ctxlen
)
2131 return call_int_hook(inode_notifysecctx
, 0, inode
, ctx
, ctxlen
);
2133 EXPORT_SYMBOL(security_inode_notifysecctx
);
2135 int security_inode_setsecctx(struct dentry
*dentry
, void *ctx
, u32 ctxlen
)
2137 return call_int_hook(inode_setsecctx
, 0, dentry
, ctx
, ctxlen
);
2139 EXPORT_SYMBOL(security_inode_setsecctx
);
2141 int security_inode_getsecctx(struct inode
*inode
, void **ctx
, u32
*ctxlen
)
2143 return call_int_hook(inode_getsecctx
, -EOPNOTSUPP
, inode
, ctx
, ctxlen
);
2145 EXPORT_SYMBOL(security_inode_getsecctx
);
2147 #ifdef CONFIG_WATCH_QUEUE
2148 int security_post_notification(const struct cred
*w_cred
,
2149 const struct cred
*cred
,
2150 struct watch_notification
*n
)
2152 return call_int_hook(post_notification
, 0, w_cred
, cred
, n
);
2154 #endif /* CONFIG_WATCH_QUEUE */
2156 #ifdef CONFIG_KEY_NOTIFICATIONS
2157 int security_watch_key(struct key
*key
)
2159 return call_int_hook(watch_key
, 0, key
);
2163 #ifdef CONFIG_SECURITY_NETWORK
2165 int security_unix_stream_connect(struct sock
*sock
, struct sock
*other
, struct sock
*newsk
)
2167 return call_int_hook(unix_stream_connect
, 0, sock
, other
, newsk
);
2169 EXPORT_SYMBOL(security_unix_stream_connect
);
2171 int security_unix_may_send(struct socket
*sock
, struct socket
*other
)
2173 return call_int_hook(unix_may_send
, 0, sock
, other
);
2175 EXPORT_SYMBOL(security_unix_may_send
);
2177 int security_socket_create(int family
, int type
, int protocol
, int kern
)
2179 return call_int_hook(socket_create
, 0, family
, type
, protocol
, kern
);
2182 int security_socket_post_create(struct socket
*sock
, int family
,
2183 int type
, int protocol
, int kern
)
2185 return call_int_hook(socket_post_create
, 0, sock
, family
, type
,
2189 int security_socket_socketpair(struct socket
*socka
, struct socket
*sockb
)
2191 return call_int_hook(socket_socketpair
, 0, socka
, sockb
);
2193 EXPORT_SYMBOL(security_socket_socketpair
);
2195 int security_socket_bind(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2197 return call_int_hook(socket_bind
, 0, sock
, address
, addrlen
);
2200 int security_socket_connect(struct socket
*sock
, struct sockaddr
*address
, int addrlen
)
2202 return call_int_hook(socket_connect
, 0, sock
, address
, addrlen
);
2205 int security_socket_listen(struct socket
*sock
, int backlog
)
2207 return call_int_hook(socket_listen
, 0, sock
, backlog
);
2210 int security_socket_accept(struct socket
*sock
, struct socket
*newsock
)
2212 return call_int_hook(socket_accept
, 0, sock
, newsock
);
2215 int security_socket_sendmsg(struct socket
*sock
, struct msghdr
*msg
, int size
)
2217 return call_int_hook(socket_sendmsg
, 0, sock
, msg
, size
);
2220 int security_socket_recvmsg(struct socket
*sock
, struct msghdr
*msg
,
2221 int size
, int flags
)
2223 return call_int_hook(socket_recvmsg
, 0, sock
, msg
, size
, flags
);
2226 int security_socket_getsockname(struct socket
*sock
)
2228 return call_int_hook(socket_getsockname
, 0, sock
);
2231 int security_socket_getpeername(struct socket
*sock
)
2233 return call_int_hook(socket_getpeername
, 0, sock
);
2236 int security_socket_getsockopt(struct socket
*sock
, int level
, int optname
)
2238 return call_int_hook(socket_getsockopt
, 0, sock
, level
, optname
);
2241 int security_socket_setsockopt(struct socket
*sock
, int level
, int optname
)
2243 return call_int_hook(socket_setsockopt
, 0, sock
, level
, optname
);
2246 int security_socket_shutdown(struct socket
*sock
, int how
)
2248 return call_int_hook(socket_shutdown
, 0, sock
, how
);
2251 int security_sock_rcv_skb(struct sock
*sk
, struct sk_buff
*skb
)
2253 return call_int_hook(socket_sock_rcv_skb
, 0, sk
, skb
);
2255 EXPORT_SYMBOL(security_sock_rcv_skb
);
2257 int security_socket_getpeersec_stream(struct socket
*sock
, char __user
*optval
,
2258 int __user
*optlen
, unsigned len
)
2260 return call_int_hook(socket_getpeersec_stream
, -ENOPROTOOPT
, sock
,
2261 optval
, optlen
, len
);
2264 int security_socket_getpeersec_dgram(struct socket
*sock
, struct sk_buff
*skb
, u32
*secid
)
2266 return call_int_hook(socket_getpeersec_dgram
, -ENOPROTOOPT
, sock
,
2269 EXPORT_SYMBOL(security_socket_getpeersec_dgram
);
2271 int security_sk_alloc(struct sock
*sk
, int family
, gfp_t priority
)
2273 return call_int_hook(sk_alloc_security
, 0, sk
, family
, priority
);
2276 void security_sk_free(struct sock
*sk
)
2278 call_void_hook(sk_free_security
, sk
);
2281 void security_sk_clone(const struct sock
*sk
, struct sock
*newsk
)
2283 call_void_hook(sk_clone_security
, sk
, newsk
);
2285 EXPORT_SYMBOL(security_sk_clone
);
2287 void security_sk_classify_flow(struct sock
*sk
, struct flowi_common
*flic
)
2289 call_void_hook(sk_getsecid
, sk
, &flic
->flowic_secid
);
2291 EXPORT_SYMBOL(security_sk_classify_flow
);
2293 void security_req_classify_flow(const struct request_sock
*req
,
2294 struct flowi_common
*flic
)
2296 call_void_hook(req_classify_flow
, req
, flic
);
2298 EXPORT_SYMBOL(security_req_classify_flow
);
2300 void security_sock_graft(struct sock
*sk
, struct socket
*parent
)
2302 call_void_hook(sock_graft
, sk
, parent
);
2304 EXPORT_SYMBOL(security_sock_graft
);
2306 int security_inet_conn_request(const struct sock
*sk
,
2307 struct sk_buff
*skb
, struct request_sock
*req
)
2309 return call_int_hook(inet_conn_request
, 0, sk
, skb
, req
);
2311 EXPORT_SYMBOL(security_inet_conn_request
);
2313 void security_inet_csk_clone(struct sock
*newsk
,
2314 const struct request_sock
*req
)
2316 call_void_hook(inet_csk_clone
, newsk
, req
);
2319 void security_inet_conn_established(struct sock
*sk
,
2320 struct sk_buff
*skb
)
2322 call_void_hook(inet_conn_established
, sk
, skb
);
2324 EXPORT_SYMBOL(security_inet_conn_established
);
2326 int security_secmark_relabel_packet(u32 secid
)
2328 return call_int_hook(secmark_relabel_packet
, 0, secid
);
2330 EXPORT_SYMBOL(security_secmark_relabel_packet
);
2332 void security_secmark_refcount_inc(void)
2334 call_void_hook(secmark_refcount_inc
);
2336 EXPORT_SYMBOL(security_secmark_refcount_inc
);
2338 void security_secmark_refcount_dec(void)
2340 call_void_hook(secmark_refcount_dec
);
2342 EXPORT_SYMBOL(security_secmark_refcount_dec
);
2344 int security_tun_dev_alloc_security(void **security
)
2346 return call_int_hook(tun_dev_alloc_security
, 0, security
);
2348 EXPORT_SYMBOL(security_tun_dev_alloc_security
);
2350 void security_tun_dev_free_security(void *security
)
2352 call_void_hook(tun_dev_free_security
, security
);
2354 EXPORT_SYMBOL(security_tun_dev_free_security
);
2356 int security_tun_dev_create(void)
2358 return call_int_hook(tun_dev_create
, 0);
2360 EXPORT_SYMBOL(security_tun_dev_create
);
2362 int security_tun_dev_attach_queue(void *security
)
2364 return call_int_hook(tun_dev_attach_queue
, 0, security
);
2366 EXPORT_SYMBOL(security_tun_dev_attach_queue
);
2368 int security_tun_dev_attach(struct sock
*sk
, void *security
)
2370 return call_int_hook(tun_dev_attach
, 0, sk
, security
);
2372 EXPORT_SYMBOL(security_tun_dev_attach
);
2374 int security_tun_dev_open(void *security
)
2376 return call_int_hook(tun_dev_open
, 0, security
);
2378 EXPORT_SYMBOL(security_tun_dev_open
);
2380 int security_sctp_assoc_request(struct sctp_association
*asoc
, struct sk_buff
*skb
)
2382 return call_int_hook(sctp_assoc_request
, 0, asoc
, skb
);
2384 EXPORT_SYMBOL(security_sctp_assoc_request
);
2386 int security_sctp_bind_connect(struct sock
*sk
, int optname
,
2387 struct sockaddr
*address
, int addrlen
)
2389 return call_int_hook(sctp_bind_connect
, 0, sk
, optname
,
2392 EXPORT_SYMBOL(security_sctp_bind_connect
);
2394 void security_sctp_sk_clone(struct sctp_association
*asoc
, struct sock
*sk
,
2397 call_void_hook(sctp_sk_clone
, asoc
, sk
, newsk
);
2399 EXPORT_SYMBOL(security_sctp_sk_clone
);
2401 int security_sctp_assoc_established(struct sctp_association
*asoc
,
2402 struct sk_buff
*skb
)
2404 return call_int_hook(sctp_assoc_established
, 0, asoc
, skb
);
2406 EXPORT_SYMBOL(security_sctp_assoc_established
);
2408 #endif /* CONFIG_SECURITY_NETWORK */
2410 #ifdef CONFIG_SECURITY_INFINIBAND
2412 int security_ib_pkey_access(void *sec
, u64 subnet_prefix
, u16 pkey
)
2414 return call_int_hook(ib_pkey_access
, 0, sec
, subnet_prefix
, pkey
);
2416 EXPORT_SYMBOL(security_ib_pkey_access
);
2418 int security_ib_endport_manage_subnet(void *sec
, const char *dev_name
, u8 port_num
)
2420 return call_int_hook(ib_endport_manage_subnet
, 0, sec
, dev_name
, port_num
);
2422 EXPORT_SYMBOL(security_ib_endport_manage_subnet
);
2424 int security_ib_alloc_security(void **sec
)
2426 return call_int_hook(ib_alloc_security
, 0, sec
);
2428 EXPORT_SYMBOL(security_ib_alloc_security
);
2430 void security_ib_free_security(void *sec
)
2432 call_void_hook(ib_free_security
, sec
);
2434 EXPORT_SYMBOL(security_ib_free_security
);
2435 #endif /* CONFIG_SECURITY_INFINIBAND */
2437 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2439 int security_xfrm_policy_alloc(struct xfrm_sec_ctx
**ctxp
,
2440 struct xfrm_user_sec_ctx
*sec_ctx
,
2443 return call_int_hook(xfrm_policy_alloc_security
, 0, ctxp
, sec_ctx
, gfp
);
2445 EXPORT_SYMBOL(security_xfrm_policy_alloc
);
2447 int security_xfrm_policy_clone(struct xfrm_sec_ctx
*old_ctx
,
2448 struct xfrm_sec_ctx
**new_ctxp
)
2450 return call_int_hook(xfrm_policy_clone_security
, 0, old_ctx
, new_ctxp
);
2453 void security_xfrm_policy_free(struct xfrm_sec_ctx
*ctx
)
2455 call_void_hook(xfrm_policy_free_security
, ctx
);
2457 EXPORT_SYMBOL(security_xfrm_policy_free
);
2459 int security_xfrm_policy_delete(struct xfrm_sec_ctx
*ctx
)
2461 return call_int_hook(xfrm_policy_delete_security
, 0, ctx
);
2464 int security_xfrm_state_alloc(struct xfrm_state
*x
,
2465 struct xfrm_user_sec_ctx
*sec_ctx
)
2467 return call_int_hook(xfrm_state_alloc
, 0, x
, sec_ctx
);
2469 EXPORT_SYMBOL(security_xfrm_state_alloc
);
2471 int security_xfrm_state_alloc_acquire(struct xfrm_state
*x
,
2472 struct xfrm_sec_ctx
*polsec
, u32 secid
)
2474 return call_int_hook(xfrm_state_alloc_acquire
, 0, x
, polsec
, secid
);
2477 int security_xfrm_state_delete(struct xfrm_state
*x
)
2479 return call_int_hook(xfrm_state_delete_security
, 0, x
);
2481 EXPORT_SYMBOL(security_xfrm_state_delete
);
2483 void security_xfrm_state_free(struct xfrm_state
*x
)
2485 call_void_hook(xfrm_state_free_security
, x
);
2488 int security_xfrm_policy_lookup(struct xfrm_sec_ctx
*ctx
, u32 fl_secid
)
2490 return call_int_hook(xfrm_policy_lookup
, 0, ctx
, fl_secid
);
2493 int security_xfrm_state_pol_flow_match(struct xfrm_state
*x
,
2494 struct xfrm_policy
*xp
,
2495 const struct flowi_common
*flic
)
2497 struct security_hook_list
*hp
;
2498 int rc
= LSM_RET_DEFAULT(xfrm_state_pol_flow_match
);
2501 * Since this function is expected to return 0 or 1, the judgment
2502 * becomes difficult if multiple LSMs supply this call. Fortunately,
2503 * we can use the first LSM's judgment because currently only SELinux
2504 * supplies this call.
2506 * For speed optimization, we explicitly break the loop rather than
2509 hlist_for_each_entry(hp
, &security_hook_heads
.xfrm_state_pol_flow_match
,
2511 rc
= hp
->hook
.xfrm_state_pol_flow_match(x
, xp
, flic
);
2517 int security_xfrm_decode_session(struct sk_buff
*skb
, u32
*secid
)
2519 return call_int_hook(xfrm_decode_session
, 0, skb
, secid
, 1);
2522 void security_skb_classify_flow(struct sk_buff
*skb
, struct flowi_common
*flic
)
2524 int rc
= call_int_hook(xfrm_decode_session
, 0, skb
, &flic
->flowic_secid
,
2529 EXPORT_SYMBOL(security_skb_classify_flow
);
2531 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2535 int security_key_alloc(struct key
*key
, const struct cred
*cred
,
2536 unsigned long flags
)
2538 return call_int_hook(key_alloc
, 0, key
, cred
, flags
);
2541 void security_key_free(struct key
*key
)
2543 call_void_hook(key_free
, key
);
2546 int security_key_permission(key_ref_t key_ref
, const struct cred
*cred
,
2547 enum key_need_perm need_perm
)
2549 return call_int_hook(key_permission
, 0, key_ref
, cred
, need_perm
);
2552 int security_key_getsecurity(struct key
*key
, char **_buffer
)
2555 return call_int_hook(key_getsecurity
, 0, key
, _buffer
);
2558 #endif /* CONFIG_KEYS */
2562 int security_audit_rule_init(u32 field
, u32 op
, char *rulestr
, void **lsmrule
)
2564 return call_int_hook(audit_rule_init
, 0, field
, op
, rulestr
, lsmrule
);
2567 int security_audit_rule_known(struct audit_krule
*krule
)
2569 return call_int_hook(audit_rule_known
, 0, krule
);
2572 void security_audit_rule_free(void *lsmrule
)
2574 call_void_hook(audit_rule_free
, lsmrule
);
2577 int security_audit_rule_match(u32 secid
, u32 field
, u32 op
, void *lsmrule
)
2579 return call_int_hook(audit_rule_match
, 0, secid
, field
, op
, lsmrule
);
2581 #endif /* CONFIG_AUDIT */
2583 #ifdef CONFIG_BPF_SYSCALL
2584 int security_bpf(int cmd
, union bpf_attr
*attr
, unsigned int size
)
2586 return call_int_hook(bpf
, 0, cmd
, attr
, size
);
2588 int security_bpf_map(struct bpf_map
*map
, fmode_t fmode
)
2590 return call_int_hook(bpf_map
, 0, map
, fmode
);
2592 int security_bpf_prog(struct bpf_prog
*prog
)
2594 return call_int_hook(bpf_prog
, 0, prog
);
2596 int security_bpf_map_alloc(struct bpf_map
*map
)
2598 return call_int_hook(bpf_map_alloc_security
, 0, map
);
2600 int security_bpf_prog_alloc(struct bpf_prog_aux
*aux
)
2602 return call_int_hook(bpf_prog_alloc_security
, 0, aux
);
2604 void security_bpf_map_free(struct bpf_map
*map
)
2606 call_void_hook(bpf_map_free_security
, map
);
2608 void security_bpf_prog_free(struct bpf_prog_aux
*aux
)
2610 call_void_hook(bpf_prog_free_security
, aux
);
2612 #endif /* CONFIG_BPF_SYSCALL */
2614 int security_locked_down(enum lockdown_reason what
)
2616 return call_int_hook(locked_down
, 0, what
);
2618 EXPORT_SYMBOL(security_locked_down
);
2620 #ifdef CONFIG_PERF_EVENTS
2621 int security_perf_event_open(struct perf_event_attr
*attr
, int type
)
2623 return call_int_hook(perf_event_open
, 0, attr
, type
);
2626 int security_perf_event_alloc(struct perf_event
*event
)
2628 return call_int_hook(perf_event_alloc
, 0, event
);
2631 void security_perf_event_free(struct perf_event
*event
)
2633 call_void_hook(perf_event_free
, event
);
2636 int security_perf_event_read(struct perf_event
*event
)
2638 return call_int_hook(perf_event_read
, 0, event
);
2641 int security_perf_event_write(struct perf_event
*event
)
2643 return call_int_hook(perf_event_write
, 0, event
);
2645 #endif /* CONFIG_PERF_EVENTS */
2647 #ifdef CONFIG_IO_URING
2648 int security_uring_override_creds(const struct cred
*new)
2650 return call_int_hook(uring_override_creds
, 0, new);
2653 int security_uring_sqpoll(void)
2655 return call_int_hook(uring_sqpoll
, 0);
2657 #endif /* CONFIG_IO_URING */