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] = "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_CONFIDENTIALITY_MAX] = "confidentiality",
72 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
73 static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain);
75 static struct kmem_cache *lsm_file_cache;
76 static struct kmem_cache *lsm_inode_cache;
79 static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init;
81 /* Boot-time LSM user choice */
82 static __initdata const char *chosen_lsm_order;
83 static __initdata const char *chosen_major_lsm;
85 static __initconst const char * const builtin_lsm_order = CONFIG_LSM;
87 /* Ordered list of LSMs to initialize. */
88 static __initdata struct lsm_info **ordered_lsms;
89 static __initdata struct lsm_info *exclusive;
91 static __initdata bool debug;
92 #define init_debug(...) \
95 pr_info(__VA_ARGS__); \
98 static bool __init is_enabled(struct lsm_info *lsm)
103 return *lsm->enabled;
106 /* Mark an LSM's enabled flag. */
107 static int lsm_enabled_true __initdata = 1;
108 static int lsm_enabled_false __initdata = 0;
109 static void __init set_enabled(struct lsm_info *lsm, bool enabled)
112 * When an LSM hasn't configured an enable variable, we can use
113 * a hard-coded location for storing the default enabled state.
117 lsm->enabled = &lsm_enabled_true;
119 lsm->enabled = &lsm_enabled_false;
120 } else if (lsm->enabled == &lsm_enabled_true) {
122 lsm->enabled = &lsm_enabled_false;
123 } else if (lsm->enabled == &lsm_enabled_false) {
125 lsm->enabled = &lsm_enabled_true;
127 *lsm->enabled = enabled;
131 /* Is an LSM already listed in the ordered LSMs list? */
132 static bool __init exists_ordered_lsm(struct lsm_info *lsm)
134 struct lsm_info **check;
136 for (check = ordered_lsms; *check; check++)
143 /* Append an LSM to the list of ordered LSMs to initialize. */
144 static int last_lsm __initdata;
145 static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from)
147 /* Ignore duplicate selections. */
148 if (exists_ordered_lsm(lsm))
151 if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from))
154 /* Enable this LSM, if it is not already set. */
156 lsm->enabled = &lsm_enabled_true;
157 ordered_lsms[last_lsm++] = lsm;
159 init_debug("%s ordering: %s (%sabled)\n", from, lsm->name,
160 is_enabled(lsm) ? "en" : "dis");
163 /* Is an LSM allowed to be initialized? */
164 static bool __init lsm_allowed(struct lsm_info *lsm)
166 /* Skip if the LSM is disabled. */
167 if (!is_enabled(lsm))
170 /* Not allowed if another exclusive LSM already initialized. */
171 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) {
172 init_debug("exclusive disabled: %s\n", lsm->name);
179 static void __init lsm_set_blob_size(int *need, int *lbs)
190 static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed)
195 lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred);
196 lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file);
198 * The inode blob gets an rcu_head in addition to
199 * what the modules might need.
201 if (needed->lbs_inode && blob_sizes.lbs_inode == 0)
202 blob_sizes.lbs_inode = sizeof(struct rcu_head);
203 lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode);
204 lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc);
205 lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg);
206 lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task);
209 /* Prepare LSM for initialization. */
210 static void __init prepare_lsm(struct lsm_info *lsm)
212 int enabled = lsm_allowed(lsm);
214 /* Record enablement (to handle any following exclusive LSMs). */
215 set_enabled(lsm, enabled);
217 /* If enabled, do pre-initialization work. */
219 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) {
221 init_debug("exclusive chosen: %s\n", lsm->name);
224 lsm_set_blob_sizes(lsm->blobs);
228 /* Initialize a given LSM, if it is enabled. */
229 static void __init initialize_lsm(struct lsm_info *lsm)
231 if (is_enabled(lsm)) {
234 init_debug("initializing %s\n", lsm->name);
236 WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret);
240 /* Populate ordered LSMs list from comma-separated LSM name list. */
241 static void __init ordered_lsm_parse(const char *order, const char *origin)
243 struct lsm_info *lsm;
244 char *sep, *name, *next;
246 /* LSM_ORDER_FIRST is always first. */
247 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
248 if (lsm->order == LSM_ORDER_FIRST)
249 append_ordered_lsm(lsm, "first");
252 /* Process "security=", if given. */
253 if (chosen_major_lsm) {
254 struct lsm_info *major;
257 * To match the original "security=" behavior, this
258 * explicitly does NOT fallback to another Legacy Major
259 * if the selected one was separately disabled: disable
260 * all non-matching Legacy Major LSMs.
262 for (major = __start_lsm_info; major < __end_lsm_info;
264 if ((major->flags & LSM_FLAG_LEGACY_MAJOR) &&
265 strcmp(major->name, chosen_major_lsm) != 0) {
266 set_enabled(major, false);
267 init_debug("security=%s disabled: %s\n",
268 chosen_major_lsm, major->name);
273 sep = kstrdup(order, GFP_KERNEL);
275 /* Walk the list, looking for matching LSMs. */
276 while ((name = strsep(&next, ",")) != NULL) {
279 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
280 if (lsm->order == LSM_ORDER_MUTABLE &&
281 strcmp(lsm->name, name) == 0) {
282 append_ordered_lsm(lsm, origin);
288 init_debug("%s ignored: %s\n", origin, name);
291 /* Process "security=", if given. */
292 if (chosen_major_lsm) {
293 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
294 if (exists_ordered_lsm(lsm))
296 if (strcmp(lsm->name, chosen_major_lsm) == 0)
297 append_ordered_lsm(lsm, "security=");
301 /* Disable all LSMs not in the ordered list. */
302 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
303 if (exists_ordered_lsm(lsm))
305 set_enabled(lsm, false);
306 init_debug("%s disabled: %s\n", origin, lsm->name);
312 static void __init lsm_early_cred(struct cred *cred);
313 static void __init lsm_early_task(struct task_struct *task);
315 static int lsm_append(const char *new, char **result);
317 static void __init ordered_lsm_init(void)
319 struct lsm_info **lsm;
321 ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms),
324 if (chosen_lsm_order) {
325 if (chosen_major_lsm) {
326 pr_info("security= is ignored because it is superseded by lsm=\n");
327 chosen_major_lsm = NULL;
329 ordered_lsm_parse(chosen_lsm_order, "cmdline");
331 ordered_lsm_parse(builtin_lsm_order, "builtin");
333 for (lsm = ordered_lsms; *lsm; lsm++)
336 init_debug("cred blob size = %d\n", blob_sizes.lbs_cred);
337 init_debug("file blob size = %d\n", blob_sizes.lbs_file);
338 init_debug("inode blob size = %d\n", blob_sizes.lbs_inode);
339 init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc);
340 init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg);
341 init_debug("task blob size = %d\n", blob_sizes.lbs_task);
344 * Create any kmem_caches needed for blobs
346 if (blob_sizes.lbs_file)
347 lsm_file_cache = kmem_cache_create("lsm_file_cache",
348 blob_sizes.lbs_file, 0,
350 if (blob_sizes.lbs_inode)
351 lsm_inode_cache = kmem_cache_create("lsm_inode_cache",
352 blob_sizes.lbs_inode, 0,
355 lsm_early_cred((struct cred *) current->cred);
356 lsm_early_task(current);
357 for (lsm = ordered_lsms; *lsm; lsm++)
358 initialize_lsm(*lsm);
363 int __init early_security_init(void)
366 struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
367 struct lsm_info *lsm;
369 for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
371 INIT_HLIST_HEAD(&list[i]);
373 for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) {
375 lsm->enabled = &lsm_enabled_true;
384 * security_init - initializes the security framework
386 * This should be called early in the kernel initialization sequence.
388 int __init security_init(void)
390 struct lsm_info *lsm;
392 pr_info("Security Framework initializing\n");
395 * Append the names of the early LSM modules now that kmalloc() is
398 for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) {
400 lsm_append(lsm->name, &lsm_names);
403 /* Load LSMs in specified order. */
409 /* Save user chosen LSM */
410 static int __init choose_major_lsm(char *str)
412 chosen_major_lsm = str;
415 __setup("security=", choose_major_lsm);
417 /* Explicitly choose LSM initialization order. */
418 static int __init choose_lsm_order(char *str)
420 chosen_lsm_order = str;
423 __setup("lsm=", choose_lsm_order);
425 /* Enable LSM order debugging. */
426 static int __init enable_debug(char *str)
431 __setup("lsm.debug", enable_debug);
433 static bool match_last_lsm(const char *list, const char *lsm)
437 if (WARN_ON(!list || !lsm))
439 last = strrchr(list, ',');
441 /* Pass the comma, strcmp() will check for '\0' */
445 return !strcmp(last, lsm);
448 static int lsm_append(const char *new, char **result)
452 if (*result == NULL) {
453 *result = kstrdup(new, GFP_KERNEL);
457 /* Check if it is the last registered name */
458 if (match_last_lsm(*result, new))
460 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
470 * security_add_hooks - Add a modules hooks to the hook lists.
471 * @hooks: the hooks to add
472 * @count: the number of hooks to add
473 * @lsm: the name of the security module
475 * Each LSM has to register its hooks with the infrastructure.
477 void __init security_add_hooks(struct security_hook_list *hooks, int count,
482 for (i = 0; i < count; i++) {
484 hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
488 * Don't try to append during early_security_init(), we'll come back
489 * and fix this up afterwards.
491 if (slab_is_available()) {
492 if (lsm_append(lsm, &lsm_names) < 0)
493 panic("%s - Cannot get early memory.\n", __func__);
497 int call_blocking_lsm_notifier(enum lsm_event event, void *data)
499 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain,
502 EXPORT_SYMBOL(call_blocking_lsm_notifier);
504 int register_blocking_lsm_notifier(struct notifier_block *nb)
506 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain,
509 EXPORT_SYMBOL(register_blocking_lsm_notifier);
511 int unregister_blocking_lsm_notifier(struct notifier_block *nb)
513 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain,
516 EXPORT_SYMBOL(unregister_blocking_lsm_notifier);
519 * lsm_cred_alloc - allocate a composite cred blob
520 * @cred: the cred that needs a blob
521 * @gfp: allocation type
523 * Allocate the cred blob for all the modules
525 * Returns 0, or -ENOMEM if memory can't be allocated.
527 static int lsm_cred_alloc(struct cred *cred, gfp_t gfp)
529 if (blob_sizes.lbs_cred == 0) {
530 cred->security = NULL;
534 cred->security = kzalloc(blob_sizes.lbs_cred, gfp);
535 if (cred->security == NULL)
541 * lsm_early_cred - during initialization allocate a composite cred blob
542 * @cred: the cred that needs a blob
544 * Allocate the cred blob for all the modules
546 static void __init lsm_early_cred(struct cred *cred)
548 int rc = lsm_cred_alloc(cred, GFP_KERNEL);
551 panic("%s: Early cred alloc failed.\n", __func__);
555 * lsm_file_alloc - allocate a composite file blob
556 * @file: the file that needs a blob
558 * Allocate the file blob for all the modules
560 * Returns 0, or -ENOMEM if memory can't be allocated.
562 static int lsm_file_alloc(struct file *file)
564 if (!lsm_file_cache) {
565 file->f_security = NULL;
569 file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL);
570 if (file->f_security == NULL)
576 * lsm_inode_alloc - allocate a composite inode blob
577 * @inode: the inode that needs a blob
579 * Allocate the inode blob for all the modules
581 * Returns 0, or -ENOMEM if memory can't be allocated.
583 int lsm_inode_alloc(struct inode *inode)
585 if (!lsm_inode_cache) {
586 inode->i_security = NULL;
590 inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS);
591 if (inode->i_security == NULL)
597 * lsm_task_alloc - allocate a composite task blob
598 * @task: the task that needs a blob
600 * Allocate the task blob for all the modules
602 * Returns 0, or -ENOMEM if memory can't be allocated.
604 static int lsm_task_alloc(struct task_struct *task)
606 if (blob_sizes.lbs_task == 0) {
607 task->security = NULL;
611 task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL);
612 if (task->security == NULL)
618 * lsm_ipc_alloc - allocate a composite ipc blob
619 * @kip: the ipc that needs a blob
621 * Allocate the ipc blob for all the modules
623 * Returns 0, or -ENOMEM if memory can't be allocated.
625 static int lsm_ipc_alloc(struct kern_ipc_perm *kip)
627 if (blob_sizes.lbs_ipc == 0) {
628 kip->security = NULL;
632 kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL);
633 if (kip->security == NULL)
639 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
640 * @mp: the msg_msg that needs a blob
642 * Allocate the ipc blob for all the modules
644 * Returns 0, or -ENOMEM if memory can't be allocated.
646 static int lsm_msg_msg_alloc(struct msg_msg *mp)
648 if (blob_sizes.lbs_msg_msg == 0) {
653 mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL);
654 if (mp->security == NULL)
660 * lsm_early_task - during initialization allocate a composite task blob
661 * @task: the task that needs a blob
663 * Allocate the task blob for all the modules
665 static void __init lsm_early_task(struct task_struct *task)
667 int rc = lsm_task_alloc(task);
670 panic("%s: Early task alloc failed.\n", __func__);
674 * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
675 * can be accessed with:
677 * LSM_RET_DEFAULT(<hook_name>)
679 * The macros below define static constants for the default value of each
682 #define LSM_RET_DEFAULT(NAME) (NAME##_default)
683 #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
684 #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
685 static const int LSM_RET_DEFAULT(NAME) = (DEFAULT);
686 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
687 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
689 #include <linux/lsm_hook_defs.h>
693 * Hook list operation macros.
696 * This is a hook that does not return a value.
699 * This is a hook that returns a value.
702 #define call_void_hook(FUNC, ...) \
704 struct security_hook_list *P; \
706 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
707 P->hook.FUNC(__VA_ARGS__); \
710 #define call_int_hook(FUNC, IRC, ...) ({ \
713 struct security_hook_list *P; \
715 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
716 RC = P->hook.FUNC(__VA_ARGS__); \
724 /* Security operations */
726 int security_binder_set_context_mgr(struct task_struct *mgr)
728 return call_int_hook(binder_set_context_mgr, 0, mgr);
731 int security_binder_transaction(struct task_struct *from,
732 struct task_struct *to)
734 return call_int_hook(binder_transaction, 0, from, to);
737 int security_binder_transfer_binder(struct task_struct *from,
738 struct task_struct *to)
740 return call_int_hook(binder_transfer_binder, 0, from, to);
743 int security_binder_transfer_file(struct task_struct *from,
744 struct task_struct *to, struct file *file)
746 return call_int_hook(binder_transfer_file, 0, from, to, file);
749 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
751 return call_int_hook(ptrace_access_check, 0, child, mode);
754 int security_ptrace_traceme(struct task_struct *parent)
756 return call_int_hook(ptrace_traceme, 0, parent);
759 int security_capget(struct task_struct *target,
760 kernel_cap_t *effective,
761 kernel_cap_t *inheritable,
762 kernel_cap_t *permitted)
764 return call_int_hook(capget, 0, target,
765 effective, inheritable, permitted);
768 int security_capset(struct cred *new, const struct cred *old,
769 const kernel_cap_t *effective,
770 const kernel_cap_t *inheritable,
771 const kernel_cap_t *permitted)
773 return call_int_hook(capset, 0, new, old,
774 effective, inheritable, permitted);
777 int security_capable(const struct cred *cred,
778 struct user_namespace *ns,
782 return call_int_hook(capable, 0, cred, ns, cap, opts);
785 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
787 return call_int_hook(quotactl, 0, cmds, type, id, sb);
790 int security_quota_on(struct dentry *dentry)
792 return call_int_hook(quota_on, 0, dentry);
795 int security_syslog(int type)
797 return call_int_hook(syslog, 0, type);
800 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
802 return call_int_hook(settime, 0, ts, tz);
805 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
807 struct security_hook_list *hp;
808 int cap_sys_admin = 1;
812 * The module will respond with a positive value if
813 * it thinks the __vm_enough_memory() call should be
814 * made with the cap_sys_admin set. If all of the modules
815 * agree that it should be set it will. If any module
816 * thinks it should not be set it won't.
818 hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
819 rc = hp->hook.vm_enough_memory(mm, pages);
825 return __vm_enough_memory(mm, pages, cap_sys_admin);
828 int security_bprm_creds_for_exec(struct linux_binprm *bprm)
830 return call_int_hook(bprm_creds_for_exec, 0, bprm);
833 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file)
835 return call_int_hook(bprm_creds_from_file, 0, bprm, file);
838 int security_bprm_check(struct linux_binprm *bprm)
842 ret = call_int_hook(bprm_check_security, 0, bprm);
845 return ima_bprm_check(bprm);
848 void security_bprm_committing_creds(struct linux_binprm *bprm)
850 call_void_hook(bprm_committing_creds, bprm);
853 void security_bprm_committed_creds(struct linux_binprm *bprm)
855 call_void_hook(bprm_committed_creds, bprm);
858 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc)
860 return call_int_hook(fs_context_dup, 0, fc, src_fc);
863 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param)
865 return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param);
868 int security_sb_alloc(struct super_block *sb)
870 return call_int_hook(sb_alloc_security, 0, sb);
873 void security_sb_free(struct super_block *sb)
875 call_void_hook(sb_free_security, sb);
878 void security_free_mnt_opts(void **mnt_opts)
882 call_void_hook(sb_free_mnt_opts, *mnt_opts);
885 EXPORT_SYMBOL(security_free_mnt_opts);
887 int security_sb_eat_lsm_opts(char *options, void **mnt_opts)
889 return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts);
891 EXPORT_SYMBOL(security_sb_eat_lsm_opts);
893 int security_sb_remount(struct super_block *sb,
896 return call_int_hook(sb_remount, 0, sb, mnt_opts);
898 EXPORT_SYMBOL(security_sb_remount);
900 int security_sb_kern_mount(struct super_block *sb)
902 return call_int_hook(sb_kern_mount, 0, sb);
905 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
907 return call_int_hook(sb_show_options, 0, m, sb);
910 int security_sb_statfs(struct dentry *dentry)
912 return call_int_hook(sb_statfs, 0, dentry);
915 int security_sb_mount(const char *dev_name, const struct path *path,
916 const char *type, unsigned long flags, void *data)
918 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
921 int security_sb_umount(struct vfsmount *mnt, int flags)
923 return call_int_hook(sb_umount, 0, mnt, flags);
926 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
928 return call_int_hook(sb_pivotroot, 0, old_path, new_path);
931 int security_sb_set_mnt_opts(struct super_block *sb,
933 unsigned long kern_flags,
934 unsigned long *set_kern_flags)
936 return call_int_hook(sb_set_mnt_opts,
937 mnt_opts ? -EOPNOTSUPP : 0, sb,
938 mnt_opts, kern_flags, set_kern_flags);
940 EXPORT_SYMBOL(security_sb_set_mnt_opts);
942 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
943 struct super_block *newsb,
944 unsigned long kern_flags,
945 unsigned long *set_kern_flags)
947 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
948 kern_flags, set_kern_flags);
950 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
952 int security_add_mnt_opt(const char *option, const char *val, int len,
955 return call_int_hook(sb_add_mnt_opt, -EINVAL,
956 option, val, len, mnt_opts);
958 EXPORT_SYMBOL(security_add_mnt_opt);
960 int security_move_mount(const struct path *from_path, const struct path *to_path)
962 return call_int_hook(move_mount, 0, from_path, to_path);
965 int security_path_notify(const struct path *path, u64 mask,
966 unsigned int obj_type)
968 return call_int_hook(path_notify, 0, path, mask, obj_type);
971 int security_inode_alloc(struct inode *inode)
973 int rc = lsm_inode_alloc(inode);
977 rc = call_int_hook(inode_alloc_security, 0, inode);
979 security_inode_free(inode);
983 static void inode_free_by_rcu(struct rcu_head *head)
986 * The rcu head is at the start of the inode blob
988 kmem_cache_free(lsm_inode_cache, head);
991 void security_inode_free(struct inode *inode)
993 integrity_inode_free(inode);
994 call_void_hook(inode_free_security, inode);
996 * The inode may still be referenced in a path walk and
997 * a call to security_inode_permission() can be made
998 * after inode_free_security() is called. Ideally, the VFS
999 * wouldn't do this, but fixing that is a much harder
1000 * job. For now, simply free the i_security via RCU, and
1001 * leave the current inode->i_security pointer intact.
1002 * The inode will be freed after the RCU grace period too.
1004 if (inode->i_security)
1005 call_rcu((struct rcu_head *)inode->i_security,
1009 int security_dentry_init_security(struct dentry *dentry, int mode,
1010 const struct qstr *name, void **ctx,
1013 return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
1016 EXPORT_SYMBOL(security_dentry_init_security);
1018 int security_dentry_create_files_as(struct dentry *dentry, int mode,
1020 const struct cred *old, struct cred *new)
1022 return call_int_hook(dentry_create_files_as, 0, dentry, mode,
1025 EXPORT_SYMBOL(security_dentry_create_files_as);
1027 int security_inode_init_security(struct inode *inode, struct inode *dir,
1028 const struct qstr *qstr,
1029 const initxattrs initxattrs, void *fs_data)
1031 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
1032 struct xattr *lsm_xattr, *evm_xattr, *xattr;
1035 if (unlikely(IS_PRIVATE(inode)))
1039 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
1040 dir, qstr, NULL, NULL, NULL);
1041 memset(new_xattrs, 0, sizeof(new_xattrs));
1042 lsm_xattr = new_xattrs;
1043 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
1046 &lsm_xattr->value_len);
1050 evm_xattr = lsm_xattr + 1;
1051 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
1054 ret = initxattrs(inode, new_xattrs, fs_data);
1056 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
1057 kfree(xattr->value);
1058 return (ret == -EOPNOTSUPP) ? 0 : ret;
1060 EXPORT_SYMBOL(security_inode_init_security);
1062 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1063 const struct qstr *qstr, const char **name,
1064 void **value, size_t *len)
1066 if (unlikely(IS_PRIVATE(inode)))
1068 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
1069 qstr, name, value, len);
1071 EXPORT_SYMBOL(security_old_inode_init_security);
1073 #ifdef CONFIG_SECURITY_PATH
1074 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1077 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1079 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
1081 EXPORT_SYMBOL(security_path_mknod);
1083 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
1085 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1087 return call_int_hook(path_mkdir, 0, dir, dentry, mode);
1089 EXPORT_SYMBOL(security_path_mkdir);
1091 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1093 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1095 return call_int_hook(path_rmdir, 0, dir, dentry);
1098 int security_path_unlink(const struct path *dir, struct dentry *dentry)
1100 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1102 return call_int_hook(path_unlink, 0, dir, dentry);
1104 EXPORT_SYMBOL(security_path_unlink);
1106 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1107 const char *old_name)
1109 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1111 return call_int_hook(path_symlink, 0, dir, dentry, old_name);
1114 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1115 struct dentry *new_dentry)
1117 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1119 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
1122 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1123 const struct path *new_dir, struct dentry *new_dentry,
1126 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1127 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1130 if (flags & RENAME_EXCHANGE) {
1131 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
1132 old_dir, old_dentry);
1137 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
1140 EXPORT_SYMBOL(security_path_rename);
1142 int security_path_truncate(const struct path *path)
1144 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1146 return call_int_hook(path_truncate, 0, path);
1149 int security_path_chmod(const struct path *path, umode_t mode)
1151 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1153 return call_int_hook(path_chmod, 0, path, mode);
1156 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1158 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1160 return call_int_hook(path_chown, 0, path, uid, gid);
1163 int security_path_chroot(const struct path *path)
1165 return call_int_hook(path_chroot, 0, path);
1169 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
1171 if (unlikely(IS_PRIVATE(dir)))
1173 return call_int_hook(inode_create, 0, dir, dentry, mode);
1175 EXPORT_SYMBOL_GPL(security_inode_create);
1177 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1178 struct dentry *new_dentry)
1180 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1182 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
1185 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
1187 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1189 return call_int_hook(inode_unlink, 0, dir, dentry);
1192 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1193 const char *old_name)
1195 if (unlikely(IS_PRIVATE(dir)))
1197 return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
1200 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
1202 if (unlikely(IS_PRIVATE(dir)))
1204 return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
1206 EXPORT_SYMBOL_GPL(security_inode_mkdir);
1208 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
1210 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1212 return call_int_hook(inode_rmdir, 0, dir, dentry);
1215 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
1217 if (unlikely(IS_PRIVATE(dir)))
1219 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
1222 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1223 struct inode *new_dir, struct dentry *new_dentry,
1226 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1227 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1230 if (flags & RENAME_EXCHANGE) {
1231 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
1232 old_dir, old_dentry);
1237 return call_int_hook(inode_rename, 0, old_dir, old_dentry,
1238 new_dir, new_dentry);
1241 int security_inode_readlink(struct dentry *dentry)
1243 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1245 return call_int_hook(inode_readlink, 0, dentry);
1248 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
1251 if (unlikely(IS_PRIVATE(inode)))
1253 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
1256 int security_inode_permission(struct inode *inode, int mask)
1258 if (unlikely(IS_PRIVATE(inode)))
1260 return call_int_hook(inode_permission, 0, inode, mask);
1263 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
1267 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1269 ret = call_int_hook(inode_setattr, 0, dentry, attr);
1272 return evm_inode_setattr(dentry, attr);
1274 EXPORT_SYMBOL_GPL(security_inode_setattr);
1276 int security_inode_getattr(const struct path *path)
1278 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1280 return call_int_hook(inode_getattr, 0, path);
1283 int security_inode_setxattr(struct dentry *dentry, const char *name,
1284 const void *value, size_t size, int flags)
1288 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1291 * SELinux and Smack integrate the cap call,
1292 * so assume that all LSMs supplying this call do so.
1294 ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
1298 ret = cap_inode_setxattr(dentry, name, value, size, flags);
1301 ret = ima_inode_setxattr(dentry, name, value, size);
1304 return evm_inode_setxattr(dentry, name, value, size);
1307 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1308 const void *value, size_t size, int flags)
1310 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1312 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
1313 evm_inode_post_setxattr(dentry, name, value, size);
1316 int security_inode_getxattr(struct dentry *dentry, const char *name)
1318 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1320 return call_int_hook(inode_getxattr, 0, dentry, name);
1323 int security_inode_listxattr(struct dentry *dentry)
1325 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1327 return call_int_hook(inode_listxattr, 0, dentry);
1330 int security_inode_removexattr(struct dentry *dentry, const char *name)
1334 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1337 * SELinux and Smack integrate the cap call,
1338 * so assume that all LSMs supplying this call do so.
1340 ret = call_int_hook(inode_removexattr, 1, dentry, name);
1342 ret = cap_inode_removexattr(dentry, name);
1345 ret = ima_inode_removexattr(dentry, name);
1348 return evm_inode_removexattr(dentry, name);
1351 int security_inode_need_killpriv(struct dentry *dentry)
1353 return call_int_hook(inode_need_killpriv, 0, dentry);
1356 int security_inode_killpriv(struct dentry *dentry)
1358 return call_int_hook(inode_killpriv, 0, dentry);
1361 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
1363 struct security_hook_list *hp;
1366 if (unlikely(IS_PRIVATE(inode)))
1367 return LSM_RET_DEFAULT(inode_getsecurity);
1369 * Only one module will provide an attribute with a given name.
1371 hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
1372 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
1373 if (rc != LSM_RET_DEFAULT(inode_getsecurity))
1376 return LSM_RET_DEFAULT(inode_getsecurity);
1379 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
1381 struct security_hook_list *hp;
1384 if (unlikely(IS_PRIVATE(inode)))
1385 return LSM_RET_DEFAULT(inode_setsecurity);
1387 * Only one module will provide an attribute with a given name.
1389 hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
1390 rc = hp->hook.inode_setsecurity(inode, name, value, size,
1392 if (rc != LSM_RET_DEFAULT(inode_setsecurity))
1395 return LSM_RET_DEFAULT(inode_setsecurity);
1398 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
1400 if (unlikely(IS_PRIVATE(inode)))
1402 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
1404 EXPORT_SYMBOL(security_inode_listsecurity);
1406 void security_inode_getsecid(struct inode *inode, u32 *secid)
1408 call_void_hook(inode_getsecid, inode, secid);
1411 int security_inode_copy_up(struct dentry *src, struct cred **new)
1413 return call_int_hook(inode_copy_up, 0, src, new);
1415 EXPORT_SYMBOL(security_inode_copy_up);
1417 int security_inode_copy_up_xattr(const char *name)
1419 struct security_hook_list *hp;
1423 * The implementation can return 0 (accept the xattr), 1 (discard the
1424 * xattr), -EOPNOTSUPP if it does not know anything about the xattr or
1425 * any other error code incase of an error.
1427 hlist_for_each_entry(hp,
1428 &security_hook_heads.inode_copy_up_xattr, list) {
1429 rc = hp->hook.inode_copy_up_xattr(name);
1430 if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr))
1434 return LSM_RET_DEFAULT(inode_copy_up_xattr);
1436 EXPORT_SYMBOL(security_inode_copy_up_xattr);
1438 int security_kernfs_init_security(struct kernfs_node *kn_dir,
1439 struct kernfs_node *kn)
1441 return call_int_hook(kernfs_init_security, 0, kn_dir, kn);
1444 int security_file_permission(struct file *file, int mask)
1448 ret = call_int_hook(file_permission, 0, file, mask);
1452 return fsnotify_perm(file, mask);
1455 int security_file_alloc(struct file *file)
1457 int rc = lsm_file_alloc(file);
1461 rc = call_int_hook(file_alloc_security, 0, file);
1463 security_file_free(file);
1467 void security_file_free(struct file *file)
1471 call_void_hook(file_free_security, file);
1473 blob = file->f_security;
1475 file->f_security = NULL;
1476 kmem_cache_free(lsm_file_cache, blob);
1480 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1482 return call_int_hook(file_ioctl, 0, file, cmd, arg);
1484 EXPORT_SYMBOL_GPL(security_file_ioctl);
1486 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
1489 * Does we have PROT_READ and does the application expect
1490 * it to imply PROT_EXEC? If not, nothing to talk about...
1492 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
1494 if (!(current->personality & READ_IMPLIES_EXEC))
1497 * if that's an anonymous mapping, let it.
1500 return prot | PROT_EXEC;
1502 * ditto if it's not on noexec mount, except that on !MMU we need
1503 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1505 if (!path_noexec(&file->f_path)) {
1507 if (file->f_op->mmap_capabilities) {
1508 unsigned caps = file->f_op->mmap_capabilities(file);
1509 if (!(caps & NOMMU_MAP_EXEC))
1513 return prot | PROT_EXEC;
1515 /* anything on noexec mount won't get PROT_EXEC */
1519 int security_mmap_file(struct file *file, unsigned long prot,
1520 unsigned long flags)
1523 ret = call_int_hook(mmap_file, 0, file, prot,
1524 mmap_prot(file, prot), flags);
1527 return ima_file_mmap(file, prot);
1530 int security_mmap_addr(unsigned long addr)
1532 return call_int_hook(mmap_addr, 0, addr);
1535 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1540 ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot);
1543 return ima_file_mprotect(vma, prot);
1546 int security_file_lock(struct file *file, unsigned int cmd)
1548 return call_int_hook(file_lock, 0, file, cmd);
1551 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
1553 return call_int_hook(file_fcntl, 0, file, cmd, arg);
1556 void security_file_set_fowner(struct file *file)
1558 call_void_hook(file_set_fowner, file);
1561 int security_file_send_sigiotask(struct task_struct *tsk,
1562 struct fown_struct *fown, int sig)
1564 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
1567 int security_file_receive(struct file *file)
1569 return call_int_hook(file_receive, 0, file);
1572 int security_file_open(struct file *file)
1576 ret = call_int_hook(file_open, 0, file);
1580 return fsnotify_perm(file, MAY_OPEN);
1583 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
1585 int rc = lsm_task_alloc(task);
1589 rc = call_int_hook(task_alloc, 0, task, clone_flags);
1591 security_task_free(task);
1595 void security_task_free(struct task_struct *task)
1597 call_void_hook(task_free, task);
1599 kfree(task->security);
1600 task->security = NULL;
1603 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1605 int rc = lsm_cred_alloc(cred, gfp);
1610 rc = call_int_hook(cred_alloc_blank, 0, cred, gfp);
1612 security_cred_free(cred);
1616 void security_cred_free(struct cred *cred)
1619 * There is a failure case in prepare_creds() that
1620 * may result in a call here with ->security being NULL.
1622 if (unlikely(cred->security == NULL))
1625 call_void_hook(cred_free, cred);
1627 kfree(cred->security);
1628 cred->security = NULL;
1631 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1633 int rc = lsm_cred_alloc(new, gfp);
1638 rc = call_int_hook(cred_prepare, 0, new, old, gfp);
1640 security_cred_free(new);
1644 void security_transfer_creds(struct cred *new, const struct cred *old)
1646 call_void_hook(cred_transfer, new, old);
1649 void security_cred_getsecid(const struct cred *c, u32 *secid)
1652 call_void_hook(cred_getsecid, c, secid);
1654 EXPORT_SYMBOL(security_cred_getsecid);
1656 int security_kernel_act_as(struct cred *new, u32 secid)
1658 return call_int_hook(kernel_act_as, 0, new, secid);
1661 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1663 return call_int_hook(kernel_create_files_as, 0, new, inode);
1666 int security_kernel_module_request(char *kmod_name)
1670 ret = call_int_hook(kernel_module_request, 0, kmod_name);
1673 return integrity_kernel_module_request(kmod_name);
1676 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id,
1681 ret = call_int_hook(kernel_read_file, 0, file, id, contents);
1684 return ima_read_file(file, id, contents);
1686 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1688 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1689 enum kernel_read_file_id id)
1693 ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1696 return ima_post_read_file(file, buf, size, id);
1698 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1700 int security_kernel_load_data(enum kernel_load_data_id id, bool contents)
1704 ret = call_int_hook(kernel_load_data, 0, id, contents);
1707 return ima_load_data(id, contents);
1709 EXPORT_SYMBOL_GPL(security_kernel_load_data);
1711 int security_kernel_post_load_data(char *buf, loff_t size,
1712 enum kernel_load_data_id id,
1717 ret = call_int_hook(kernel_post_load_data, 0, buf, size, id,
1721 return ima_post_load_data(buf, size, id, description);
1723 EXPORT_SYMBOL_GPL(security_kernel_post_load_data);
1725 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1728 return call_int_hook(task_fix_setuid, 0, new, old, flags);
1731 int security_task_fix_setgid(struct cred *new, const struct cred *old,
1734 return call_int_hook(task_fix_setgid, 0, new, old, flags);
1737 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1739 return call_int_hook(task_setpgid, 0, p, pgid);
1742 int security_task_getpgid(struct task_struct *p)
1744 return call_int_hook(task_getpgid, 0, p);
1747 int security_task_getsid(struct task_struct *p)
1749 return call_int_hook(task_getsid, 0, p);
1752 void security_task_getsecid(struct task_struct *p, u32 *secid)
1755 call_void_hook(task_getsecid, p, secid);
1757 EXPORT_SYMBOL(security_task_getsecid);
1759 int security_task_setnice(struct task_struct *p, int nice)
1761 return call_int_hook(task_setnice, 0, p, nice);
1764 int security_task_setioprio(struct task_struct *p, int ioprio)
1766 return call_int_hook(task_setioprio, 0, p, ioprio);
1769 int security_task_getioprio(struct task_struct *p)
1771 return call_int_hook(task_getioprio, 0, p);
1774 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1777 return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1780 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1781 struct rlimit *new_rlim)
1783 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1786 int security_task_setscheduler(struct task_struct *p)
1788 return call_int_hook(task_setscheduler, 0, p);
1791 int security_task_getscheduler(struct task_struct *p)
1793 return call_int_hook(task_getscheduler, 0, p);
1796 int security_task_movememory(struct task_struct *p)
1798 return call_int_hook(task_movememory, 0, p);
1801 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
1802 int sig, const struct cred *cred)
1804 return call_int_hook(task_kill, 0, p, info, sig, cred);
1807 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1808 unsigned long arg4, unsigned long arg5)
1811 int rc = LSM_RET_DEFAULT(task_prctl);
1812 struct security_hook_list *hp;
1814 hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1815 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1816 if (thisrc != LSM_RET_DEFAULT(task_prctl)) {
1825 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1827 call_void_hook(task_to_inode, p, inode);
1830 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1832 return call_int_hook(ipc_permission, 0, ipcp, flag);
1835 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1838 call_void_hook(ipc_getsecid, ipcp, secid);
1841 int security_msg_msg_alloc(struct msg_msg *msg)
1843 int rc = lsm_msg_msg_alloc(msg);
1847 rc = call_int_hook(msg_msg_alloc_security, 0, msg);
1849 security_msg_msg_free(msg);
1853 void security_msg_msg_free(struct msg_msg *msg)
1855 call_void_hook(msg_msg_free_security, msg);
1856 kfree(msg->security);
1857 msg->security = NULL;
1860 int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1862 int rc = lsm_ipc_alloc(msq);
1866 rc = call_int_hook(msg_queue_alloc_security, 0, msq);
1868 security_msg_queue_free(msq);
1872 void security_msg_queue_free(struct kern_ipc_perm *msq)
1874 call_void_hook(msg_queue_free_security, msq);
1875 kfree(msq->security);
1876 msq->security = NULL;
1879 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1881 return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1884 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1886 return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1889 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1890 struct msg_msg *msg, int msqflg)
1892 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1895 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1896 struct task_struct *target, long type, int mode)
1898 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1901 int security_shm_alloc(struct kern_ipc_perm *shp)
1903 int rc = lsm_ipc_alloc(shp);
1907 rc = call_int_hook(shm_alloc_security, 0, shp);
1909 security_shm_free(shp);
1913 void security_shm_free(struct kern_ipc_perm *shp)
1915 call_void_hook(shm_free_security, shp);
1916 kfree(shp->security);
1917 shp->security = NULL;
1920 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
1922 return call_int_hook(shm_associate, 0, shp, shmflg);
1925 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1927 return call_int_hook(shm_shmctl, 0, shp, cmd);
1930 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
1932 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1935 int security_sem_alloc(struct kern_ipc_perm *sma)
1937 int rc = lsm_ipc_alloc(sma);
1941 rc = call_int_hook(sem_alloc_security, 0, sma);
1943 security_sem_free(sma);
1947 void security_sem_free(struct kern_ipc_perm *sma)
1949 call_void_hook(sem_free_security, sma);
1950 kfree(sma->security);
1951 sma->security = NULL;
1954 int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1956 return call_int_hook(sem_associate, 0, sma, semflg);
1959 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1961 return call_int_hook(sem_semctl, 0, sma, cmd);
1964 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
1965 unsigned nsops, int alter)
1967 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1970 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1972 if (unlikely(inode && IS_PRIVATE(inode)))
1974 call_void_hook(d_instantiate, dentry, inode);
1976 EXPORT_SYMBOL(security_d_instantiate);
1978 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
1981 struct security_hook_list *hp;
1983 hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) {
1984 if (lsm != NULL && strcmp(lsm, hp->lsm))
1986 return hp->hook.getprocattr(p, name, value);
1988 return LSM_RET_DEFAULT(getprocattr);
1991 int security_setprocattr(const char *lsm, const char *name, void *value,
1994 struct security_hook_list *hp;
1996 hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) {
1997 if (lsm != NULL && strcmp(lsm, hp->lsm))
1999 return hp->hook.setprocattr(name, value, size);
2001 return LSM_RET_DEFAULT(setprocattr);
2004 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2006 return call_int_hook(netlink_send, 0, sk, skb);
2009 int security_ismaclabel(const char *name)
2011 return call_int_hook(ismaclabel, 0, name);
2013 EXPORT_SYMBOL(security_ismaclabel);
2015 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2017 struct security_hook_list *hp;
2021 * Currently, only one LSM can implement secid_to_secctx (i.e this
2022 * LSM hook is not "stackable").
2024 hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) {
2025 rc = hp->hook.secid_to_secctx(secid, secdata, seclen);
2026 if (rc != LSM_RET_DEFAULT(secid_to_secctx))
2030 return LSM_RET_DEFAULT(secid_to_secctx);
2032 EXPORT_SYMBOL(security_secid_to_secctx);
2034 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
2037 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
2039 EXPORT_SYMBOL(security_secctx_to_secid);
2041 void security_release_secctx(char *secdata, u32 seclen)
2043 call_void_hook(release_secctx, secdata, seclen);
2045 EXPORT_SYMBOL(security_release_secctx);
2047 void security_inode_invalidate_secctx(struct inode *inode)
2049 call_void_hook(inode_invalidate_secctx, inode);
2051 EXPORT_SYMBOL(security_inode_invalidate_secctx);
2053 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2055 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
2057 EXPORT_SYMBOL(security_inode_notifysecctx);
2059 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2061 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
2063 EXPORT_SYMBOL(security_inode_setsecctx);
2065 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2067 return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
2069 EXPORT_SYMBOL(security_inode_getsecctx);
2071 #ifdef CONFIG_WATCH_QUEUE
2072 int security_post_notification(const struct cred *w_cred,
2073 const struct cred *cred,
2074 struct watch_notification *n)
2076 return call_int_hook(post_notification, 0, w_cred, cred, n);
2078 #endif /* CONFIG_WATCH_QUEUE */
2080 #ifdef CONFIG_KEY_NOTIFICATIONS
2081 int security_watch_key(struct key *key)
2083 return call_int_hook(watch_key, 0, key);
2087 #ifdef CONFIG_SECURITY_NETWORK
2089 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
2091 return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
2093 EXPORT_SYMBOL(security_unix_stream_connect);
2095 int security_unix_may_send(struct socket *sock, struct socket *other)
2097 return call_int_hook(unix_may_send, 0, sock, other);
2099 EXPORT_SYMBOL(security_unix_may_send);
2101 int security_socket_create(int family, int type, int protocol, int kern)
2103 return call_int_hook(socket_create, 0, family, type, protocol, kern);
2106 int security_socket_post_create(struct socket *sock, int family,
2107 int type, int protocol, int kern)
2109 return call_int_hook(socket_post_create, 0, sock, family, type,
2113 int security_socket_socketpair(struct socket *socka, struct socket *sockb)
2115 return call_int_hook(socket_socketpair, 0, socka, sockb);
2117 EXPORT_SYMBOL(security_socket_socketpair);
2119 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
2121 return call_int_hook(socket_bind, 0, sock, address, addrlen);
2124 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
2126 return call_int_hook(socket_connect, 0, sock, address, addrlen);
2129 int security_socket_listen(struct socket *sock, int backlog)
2131 return call_int_hook(socket_listen, 0, sock, backlog);
2134 int security_socket_accept(struct socket *sock, struct socket *newsock)
2136 return call_int_hook(socket_accept, 0, sock, newsock);
2139 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
2141 return call_int_hook(socket_sendmsg, 0, sock, msg, size);
2144 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2145 int size, int flags)
2147 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
2150 int security_socket_getsockname(struct socket *sock)
2152 return call_int_hook(socket_getsockname, 0, sock);
2155 int security_socket_getpeername(struct socket *sock)
2157 return call_int_hook(socket_getpeername, 0, sock);
2160 int security_socket_getsockopt(struct socket *sock, int level, int optname)
2162 return call_int_hook(socket_getsockopt, 0, sock, level, optname);
2165 int security_socket_setsockopt(struct socket *sock, int level, int optname)
2167 return call_int_hook(socket_setsockopt, 0, sock, level, optname);
2170 int security_socket_shutdown(struct socket *sock, int how)
2172 return call_int_hook(socket_shutdown, 0, sock, how);
2175 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
2177 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
2179 EXPORT_SYMBOL(security_sock_rcv_skb);
2181 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2182 int __user *optlen, unsigned len)
2184 return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
2185 optval, optlen, len);
2188 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2190 return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
2193 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
2195 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2197 return call_int_hook(sk_alloc_security, 0, sk, family, priority);
2200 void security_sk_free(struct sock *sk)
2202 call_void_hook(sk_free_security, sk);
2205 void security_sk_clone(const struct sock *sk, struct sock *newsk)
2207 call_void_hook(sk_clone_security, sk, newsk);
2209 EXPORT_SYMBOL(security_sk_clone);
2211 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2213 call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
2215 EXPORT_SYMBOL(security_sk_classify_flow);
2217 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2219 call_void_hook(req_classify_flow, req, fl);
2221 EXPORT_SYMBOL(security_req_classify_flow);
2223 void security_sock_graft(struct sock *sk, struct socket *parent)
2225 call_void_hook(sock_graft, sk, parent);
2227 EXPORT_SYMBOL(security_sock_graft);
2229 int security_inet_conn_request(struct sock *sk,
2230 struct sk_buff *skb, struct request_sock *req)
2232 return call_int_hook(inet_conn_request, 0, sk, skb, req);
2234 EXPORT_SYMBOL(security_inet_conn_request);
2236 void security_inet_csk_clone(struct sock *newsk,
2237 const struct request_sock *req)
2239 call_void_hook(inet_csk_clone, newsk, req);
2242 void security_inet_conn_established(struct sock *sk,
2243 struct sk_buff *skb)
2245 call_void_hook(inet_conn_established, sk, skb);
2247 EXPORT_SYMBOL(security_inet_conn_established);
2249 int security_secmark_relabel_packet(u32 secid)
2251 return call_int_hook(secmark_relabel_packet, 0, secid);
2253 EXPORT_SYMBOL(security_secmark_relabel_packet);
2255 void security_secmark_refcount_inc(void)
2257 call_void_hook(secmark_refcount_inc);
2259 EXPORT_SYMBOL(security_secmark_refcount_inc);
2261 void security_secmark_refcount_dec(void)
2263 call_void_hook(secmark_refcount_dec);
2265 EXPORT_SYMBOL(security_secmark_refcount_dec);
2267 int security_tun_dev_alloc_security(void **security)
2269 return call_int_hook(tun_dev_alloc_security, 0, security);
2271 EXPORT_SYMBOL(security_tun_dev_alloc_security);
2273 void security_tun_dev_free_security(void *security)
2275 call_void_hook(tun_dev_free_security, security);
2277 EXPORT_SYMBOL(security_tun_dev_free_security);
2279 int security_tun_dev_create(void)
2281 return call_int_hook(tun_dev_create, 0);
2283 EXPORT_SYMBOL(security_tun_dev_create);
2285 int security_tun_dev_attach_queue(void *security)
2287 return call_int_hook(tun_dev_attach_queue, 0, security);
2289 EXPORT_SYMBOL(security_tun_dev_attach_queue);
2291 int security_tun_dev_attach(struct sock *sk, void *security)
2293 return call_int_hook(tun_dev_attach, 0, sk, security);
2295 EXPORT_SYMBOL(security_tun_dev_attach);
2297 int security_tun_dev_open(void *security)
2299 return call_int_hook(tun_dev_open, 0, security);
2301 EXPORT_SYMBOL(security_tun_dev_open);
2303 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb)
2305 return call_int_hook(sctp_assoc_request, 0, ep, skb);
2307 EXPORT_SYMBOL(security_sctp_assoc_request);
2309 int security_sctp_bind_connect(struct sock *sk, int optname,
2310 struct sockaddr *address, int addrlen)
2312 return call_int_hook(sctp_bind_connect, 0, sk, optname,
2315 EXPORT_SYMBOL(security_sctp_bind_connect);
2317 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
2320 call_void_hook(sctp_sk_clone, ep, sk, newsk);
2322 EXPORT_SYMBOL(security_sctp_sk_clone);
2324 #endif /* CONFIG_SECURITY_NETWORK */
2326 #ifdef CONFIG_SECURITY_INFINIBAND
2328 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
2330 return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
2332 EXPORT_SYMBOL(security_ib_pkey_access);
2334 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
2336 return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
2338 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
2340 int security_ib_alloc_security(void **sec)
2342 return call_int_hook(ib_alloc_security, 0, sec);
2344 EXPORT_SYMBOL(security_ib_alloc_security);
2346 void security_ib_free_security(void *sec)
2348 call_void_hook(ib_free_security, sec);
2350 EXPORT_SYMBOL(security_ib_free_security);
2351 #endif /* CONFIG_SECURITY_INFINIBAND */
2353 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2355 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2356 struct xfrm_user_sec_ctx *sec_ctx,
2359 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
2361 EXPORT_SYMBOL(security_xfrm_policy_alloc);
2363 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
2364 struct xfrm_sec_ctx **new_ctxp)
2366 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
2369 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2371 call_void_hook(xfrm_policy_free_security, ctx);
2373 EXPORT_SYMBOL(security_xfrm_policy_free);
2375 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2377 return call_int_hook(xfrm_policy_delete_security, 0, ctx);
2380 int security_xfrm_state_alloc(struct xfrm_state *x,
2381 struct xfrm_user_sec_ctx *sec_ctx)
2383 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
2385 EXPORT_SYMBOL(security_xfrm_state_alloc);
2387 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2388 struct xfrm_sec_ctx *polsec, u32 secid)
2390 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
2393 int security_xfrm_state_delete(struct xfrm_state *x)
2395 return call_int_hook(xfrm_state_delete_security, 0, x);
2397 EXPORT_SYMBOL(security_xfrm_state_delete);
2399 void security_xfrm_state_free(struct xfrm_state *x)
2401 call_void_hook(xfrm_state_free_security, x);
2404 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2406 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
2409 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2410 struct xfrm_policy *xp,
2411 const struct flowi *fl)
2413 struct security_hook_list *hp;
2414 int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match);
2417 * Since this function is expected to return 0 or 1, the judgment
2418 * becomes difficult if multiple LSMs supply this call. Fortunately,
2419 * we can use the first LSM's judgment because currently only SELinux
2420 * supplies this call.
2422 * For speed optimization, we explicitly break the loop rather than
2425 hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
2427 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
2433 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2435 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
2438 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2440 int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
2445 EXPORT_SYMBOL(security_skb_classify_flow);
2447 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2451 int security_key_alloc(struct key *key, const struct cred *cred,
2452 unsigned long flags)
2454 return call_int_hook(key_alloc, 0, key, cred, flags);
2457 void security_key_free(struct key *key)
2459 call_void_hook(key_free, key);
2462 int security_key_permission(key_ref_t key_ref, const struct cred *cred,
2463 enum key_need_perm need_perm)
2465 return call_int_hook(key_permission, 0, key_ref, cred, need_perm);
2468 int security_key_getsecurity(struct key *key, char **_buffer)
2471 return call_int_hook(key_getsecurity, 0, key, _buffer);
2474 #endif /* CONFIG_KEYS */
2478 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
2480 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
2483 int security_audit_rule_known(struct audit_krule *krule)
2485 return call_int_hook(audit_rule_known, 0, krule);
2488 void security_audit_rule_free(void *lsmrule)
2490 call_void_hook(audit_rule_free, lsmrule);
2493 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule)
2495 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule);
2497 #endif /* CONFIG_AUDIT */
2499 #ifdef CONFIG_BPF_SYSCALL
2500 int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
2502 return call_int_hook(bpf, 0, cmd, attr, size);
2504 int security_bpf_map(struct bpf_map *map, fmode_t fmode)
2506 return call_int_hook(bpf_map, 0, map, fmode);
2508 int security_bpf_prog(struct bpf_prog *prog)
2510 return call_int_hook(bpf_prog, 0, prog);
2512 int security_bpf_map_alloc(struct bpf_map *map)
2514 return call_int_hook(bpf_map_alloc_security, 0, map);
2516 int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
2518 return call_int_hook(bpf_prog_alloc_security, 0, aux);
2520 void security_bpf_map_free(struct bpf_map *map)
2522 call_void_hook(bpf_map_free_security, map);
2524 void security_bpf_prog_free(struct bpf_prog_aux *aux)
2526 call_void_hook(bpf_prog_free_security, aux);
2528 #endif /* CONFIG_BPF_SYSCALL */
2530 int security_locked_down(enum lockdown_reason what)
2532 return call_int_hook(locked_down, 0, what);
2534 EXPORT_SYMBOL(security_locked_down);
2536 #ifdef CONFIG_PERF_EVENTS
2537 int security_perf_event_open(struct perf_event_attr *attr, int type)
2539 return call_int_hook(perf_event_open, 0, attr, type);
2542 int security_perf_event_alloc(struct perf_event *event)
2544 return call_int_hook(perf_event_alloc, 0, event);
2547 void security_perf_event_free(struct perf_event *event)
2549 call_void_hook(perf_event_free, event);
2552 int security_perf_event_read(struct perf_event *event)
2554 return call_int_hook(perf_event_read, 0, event);
2557 int security_perf_event_write(struct perf_event *event)
2559 return call_int_hook(perf_event_write, 0, event);
2561 #endif /* CONFIG_PERF_EVENTS */