1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Security plug functions
5 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
7 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
8 * Copyright (C) 2016 Mellanox Technologies
11 #define pr_fmt(fmt) "LSM: " fmt
13 #include <linux/bpf.h>
14 #include <linux/capability.h>
15 #include <linux/dcache.h>
16 #include <linux/export.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/kernel_read_file.h>
20 #include <linux/lsm_hooks.h>
21 #include <linux/integrity.h>
22 #include <linux/ima.h>
23 #include <linux/evm.h>
24 #include <linux/fsnotify.h>
25 #include <linux/mman.h>
26 #include <linux/mount.h>
27 #include <linux/personality.h>
28 #include <linux/backing-dev.h>
29 #include <linux/string.h>
30 #include <linux/msg.h>
33 #define MAX_LSM_EVM_XATTR 2
35 /* How many LSMs were built into the kernel? */
36 #define LSM_COUNT (__end_lsm_info - __start_lsm_info)
39 * These are descriptions of the reasons that can be passed to the
40 * security_locked_down() LSM hook. Placing this array here allows
41 * all security modules to use the same descriptions for auditing
44 const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = {
45 [LOCKDOWN_NONE] = "none",
46 [LOCKDOWN_MODULE_SIGNATURE] = "unsigned module loading",
47 [LOCKDOWN_DEV_MEM] = "/dev/mem,kmem,port",
48 [LOCKDOWN_EFI_TEST] = "/dev/efi_test access",
49 [LOCKDOWN_KEXEC] = "kexec of unsigned images",
50 [LOCKDOWN_HIBERNATION] = "hibernation",
51 [LOCKDOWN_PCI_ACCESS] = "direct PCI access",
52 [LOCKDOWN_IOPORT] = "raw io port access",
53 [LOCKDOWN_MSR] = "raw MSR access",
54 [LOCKDOWN_ACPI_TABLES] = "modifying ACPI tables",
55 [LOCKDOWN_PCMCIA_CIS] = "direct PCMCIA CIS storage",
56 [LOCKDOWN_TIOCSSERIAL] = "reconfiguration of serial port IO",
57 [LOCKDOWN_MODULE_PARAMETERS] = "unsafe module parameters",
58 [LOCKDOWN_MMIOTRACE] = "unsafe mmio",
59 [LOCKDOWN_DEBUGFS] = "debugfs access",
60 [LOCKDOWN_XMON_WR] = "xmon write access",
61 [LOCKDOWN_BPF_WRITE_USER] = "use of bpf to write user RAM",
62 [LOCKDOWN_INTEGRITY_MAX] = "integrity",
63 [LOCKDOWN_KCORE] = "/proc/kcore access",
64 [LOCKDOWN_KPROBES] = "use of kprobes",
65 [LOCKDOWN_BPF_READ_KERNEL] = "use of bpf to read kernel RAM",
66 [LOCKDOWN_PERF] = "unsafe use of perf",
67 [LOCKDOWN_TRACEFS] = "use of tracefs",
68 [LOCKDOWN_XMON_RW] = "xmon read and write access",
69 [LOCKDOWN_XFRM_SECRET] = "xfrm SA secret",
70 [LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality",
73 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
74 static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain);
76 static struct kmem_cache *lsm_file_cache;
77 static struct kmem_cache *lsm_inode_cache;
80 static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init;
82 /* Boot-time LSM user choice */
83 static __initdata const char *chosen_lsm_order;
84 static __initdata const char *chosen_major_lsm;
86 static __initconst const char * const builtin_lsm_order = CONFIG_LSM;
88 /* Ordered list of LSMs to initialize. */
89 static __initdata struct lsm_info **ordered_lsms;
90 static __initdata struct lsm_info *exclusive;
92 static __initdata bool debug;
93 #define init_debug(...) \
96 pr_info(__VA_ARGS__); \
99 static bool __init is_enabled(struct lsm_info *lsm)
104 return *lsm->enabled;
107 /* Mark an LSM's enabled flag. */
108 static int lsm_enabled_true __initdata = 1;
109 static int lsm_enabled_false __initdata = 0;
110 static void __init set_enabled(struct lsm_info *lsm, bool enabled)
113 * When an LSM hasn't configured an enable variable, we can use
114 * a hard-coded location for storing the default enabled state.
118 lsm->enabled = &lsm_enabled_true;
120 lsm->enabled = &lsm_enabled_false;
121 } else if (lsm->enabled == &lsm_enabled_true) {
123 lsm->enabled = &lsm_enabled_false;
124 } else if (lsm->enabled == &lsm_enabled_false) {
126 lsm->enabled = &lsm_enabled_true;
128 *lsm->enabled = enabled;
132 /* Is an LSM already listed in the ordered LSMs list? */
133 static bool __init exists_ordered_lsm(struct lsm_info *lsm)
135 struct lsm_info **check;
137 for (check = ordered_lsms; *check; check++)
144 /* Append an LSM to the list of ordered LSMs to initialize. */
145 static int last_lsm __initdata;
146 static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from)
148 /* Ignore duplicate selections. */
149 if (exists_ordered_lsm(lsm))
152 if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from))
155 /* Enable this LSM, if it is not already set. */
157 lsm->enabled = &lsm_enabled_true;
158 ordered_lsms[last_lsm++] = lsm;
160 init_debug("%s ordering: %s (%sabled)\n", from, lsm->name,
161 is_enabled(lsm) ? "en" : "dis");
164 /* Is an LSM allowed to be initialized? */
165 static bool __init lsm_allowed(struct lsm_info *lsm)
167 /* Skip if the LSM is disabled. */
168 if (!is_enabled(lsm))
171 /* Not allowed if another exclusive LSM already initialized. */
172 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) {
173 init_debug("exclusive disabled: %s\n", lsm->name);
180 static void __init lsm_set_blob_size(int *need, int *lbs)
191 static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed)
196 lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred);
197 lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file);
199 * The inode blob gets an rcu_head in addition to
200 * what the modules might need.
202 if (needed->lbs_inode && blob_sizes.lbs_inode == 0)
203 blob_sizes.lbs_inode = sizeof(struct rcu_head);
204 lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode);
205 lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc);
206 lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg);
207 lsm_set_blob_size(&needed->lbs_superblock, &blob_sizes.lbs_superblock);
208 lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task);
211 /* Prepare LSM for initialization. */
212 static void __init prepare_lsm(struct lsm_info *lsm)
214 int enabled = lsm_allowed(lsm);
216 /* Record enablement (to handle any following exclusive LSMs). */
217 set_enabled(lsm, enabled);
219 /* If enabled, do pre-initialization work. */
221 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) {
223 init_debug("exclusive chosen: %s\n", lsm->name);
226 lsm_set_blob_sizes(lsm->blobs);
230 /* Initialize a given LSM, if it is enabled. */
231 static void __init initialize_lsm(struct lsm_info *lsm)
233 if (is_enabled(lsm)) {
236 init_debug("initializing %s\n", lsm->name);
238 WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret);
242 /* Populate ordered LSMs list from comma-separated LSM name list. */
243 static void __init ordered_lsm_parse(const char *order, const char *origin)
245 struct lsm_info *lsm;
246 char *sep, *name, *next;
248 /* LSM_ORDER_FIRST is always first. */
249 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
250 if (lsm->order == LSM_ORDER_FIRST)
251 append_ordered_lsm(lsm, "first");
254 /* Process "security=", if given. */
255 if (chosen_major_lsm) {
256 struct lsm_info *major;
259 * To match the original "security=" behavior, this
260 * explicitly does NOT fallback to another Legacy Major
261 * if the selected one was separately disabled: disable
262 * all non-matching Legacy Major LSMs.
264 for (major = __start_lsm_info; major < __end_lsm_info;
266 if ((major->flags & LSM_FLAG_LEGACY_MAJOR) &&
267 strcmp(major->name, chosen_major_lsm) != 0) {
268 set_enabled(major, false);
269 init_debug("security=%s disabled: %s\n",
270 chosen_major_lsm, major->name);
275 sep = kstrdup(order, GFP_KERNEL);
277 /* Walk the list, looking for matching LSMs. */
278 while ((name = strsep(&next, ",")) != NULL) {
281 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
282 if (lsm->order == LSM_ORDER_MUTABLE &&
283 strcmp(lsm->name, name) == 0) {
284 append_ordered_lsm(lsm, origin);
290 init_debug("%s ignored: %s\n", origin, name);
293 /* Process "security=", if given. */
294 if (chosen_major_lsm) {
295 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
296 if (exists_ordered_lsm(lsm))
298 if (strcmp(lsm->name, chosen_major_lsm) == 0)
299 append_ordered_lsm(lsm, "security=");
303 /* Disable all LSMs not in the ordered list. */
304 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
305 if (exists_ordered_lsm(lsm))
307 set_enabled(lsm, false);
308 init_debug("%s disabled: %s\n", origin, lsm->name);
314 static void __init lsm_early_cred(struct cred *cred);
315 static void __init lsm_early_task(struct task_struct *task);
317 static int lsm_append(const char *new, char **result);
319 static void __init ordered_lsm_init(void)
321 struct lsm_info **lsm;
323 ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms),
326 if (chosen_lsm_order) {
327 if (chosen_major_lsm) {
328 pr_info("security= is ignored because it is superseded by lsm=\n");
329 chosen_major_lsm = NULL;
331 ordered_lsm_parse(chosen_lsm_order, "cmdline");
333 ordered_lsm_parse(builtin_lsm_order, "builtin");
335 for (lsm = ordered_lsms; *lsm; lsm++)
338 init_debug("cred blob size = %d\n", blob_sizes.lbs_cred);
339 init_debug("file blob size = %d\n", blob_sizes.lbs_file);
340 init_debug("inode blob size = %d\n", blob_sizes.lbs_inode);
341 init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc);
342 init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg);
343 init_debug("superblock blob size = %d\n", blob_sizes.lbs_superblock);
344 init_debug("task blob size = %d\n", blob_sizes.lbs_task);
347 * Create any kmem_caches needed for blobs
349 if (blob_sizes.lbs_file)
350 lsm_file_cache = kmem_cache_create("lsm_file_cache",
351 blob_sizes.lbs_file, 0,
353 if (blob_sizes.lbs_inode)
354 lsm_inode_cache = kmem_cache_create("lsm_inode_cache",
355 blob_sizes.lbs_inode, 0,
358 lsm_early_cred((struct cred *) current->cred);
359 lsm_early_task(current);
360 for (lsm = ordered_lsms; *lsm; lsm++)
361 initialize_lsm(*lsm);
366 int __init early_security_init(void)
369 struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
370 struct lsm_info *lsm;
372 for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
374 INIT_HLIST_HEAD(&list[i]);
376 for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) {
378 lsm->enabled = &lsm_enabled_true;
387 * security_init - initializes the security framework
389 * This should be called early in the kernel initialization sequence.
391 int __init security_init(void)
393 struct lsm_info *lsm;
395 pr_info("Security Framework initializing\n");
398 * Append the names of the early LSM modules now that kmalloc() is
401 for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) {
403 lsm_append(lsm->name, &lsm_names);
406 /* Load LSMs in specified order. */
412 /* Save user chosen LSM */
413 static int __init choose_major_lsm(char *str)
415 chosen_major_lsm = str;
418 __setup("security=", choose_major_lsm);
420 /* Explicitly choose LSM initialization order. */
421 static int __init choose_lsm_order(char *str)
423 chosen_lsm_order = str;
426 __setup("lsm=", choose_lsm_order);
428 /* Enable LSM order debugging. */
429 static int __init enable_debug(char *str)
434 __setup("lsm.debug", enable_debug);
436 static bool match_last_lsm(const char *list, const char *lsm)
440 if (WARN_ON(!list || !lsm))
442 last = strrchr(list, ',');
444 /* Pass the comma, strcmp() will check for '\0' */
448 return !strcmp(last, lsm);
451 static int lsm_append(const char *new, char **result)
455 if (*result == NULL) {
456 *result = kstrdup(new, GFP_KERNEL);
460 /* Check if it is the last registered name */
461 if (match_last_lsm(*result, new))
463 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
473 * security_add_hooks - Add a modules hooks to the hook lists.
474 * @hooks: the hooks to add
475 * @count: the number of hooks to add
476 * @lsm: the name of the security module
478 * Each LSM has to register its hooks with the infrastructure.
480 void __init security_add_hooks(struct security_hook_list *hooks, int count,
485 for (i = 0; i < count; i++) {
487 hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
491 * Don't try to append during early_security_init(), we'll come back
492 * and fix this up afterwards.
494 if (slab_is_available()) {
495 if (lsm_append(lsm, &lsm_names) < 0)
496 panic("%s - Cannot get early memory.\n", __func__);
500 int call_blocking_lsm_notifier(enum lsm_event event, void *data)
502 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain,
505 EXPORT_SYMBOL(call_blocking_lsm_notifier);
507 int register_blocking_lsm_notifier(struct notifier_block *nb)
509 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain,
512 EXPORT_SYMBOL(register_blocking_lsm_notifier);
514 int unregister_blocking_lsm_notifier(struct notifier_block *nb)
516 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain,
519 EXPORT_SYMBOL(unregister_blocking_lsm_notifier);
522 * lsm_cred_alloc - allocate a composite cred blob
523 * @cred: the cred that needs a blob
524 * @gfp: allocation type
526 * Allocate the cred blob for all the modules
528 * Returns 0, or -ENOMEM if memory can't be allocated.
530 static int lsm_cred_alloc(struct cred *cred, gfp_t gfp)
532 if (blob_sizes.lbs_cred == 0) {
533 cred->security = NULL;
537 cred->security = kzalloc(blob_sizes.lbs_cred, gfp);
538 if (cred->security == NULL)
544 * lsm_early_cred - during initialization allocate a composite cred blob
545 * @cred: the cred that needs a blob
547 * Allocate the cred blob for all the modules
549 static void __init lsm_early_cred(struct cred *cred)
551 int rc = lsm_cred_alloc(cred, GFP_KERNEL);
554 panic("%s: Early cred alloc failed.\n", __func__);
558 * lsm_file_alloc - allocate a composite file blob
559 * @file: the file that needs a blob
561 * Allocate the file blob for all the modules
563 * Returns 0, or -ENOMEM if memory can't be allocated.
565 static int lsm_file_alloc(struct file *file)
567 if (!lsm_file_cache) {
568 file->f_security = NULL;
572 file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL);
573 if (file->f_security == NULL)
579 * lsm_inode_alloc - allocate a composite inode blob
580 * @inode: the inode that needs a blob
582 * Allocate the inode blob for all the modules
584 * Returns 0, or -ENOMEM if memory can't be allocated.
586 int lsm_inode_alloc(struct inode *inode)
588 if (!lsm_inode_cache) {
589 inode->i_security = NULL;
593 inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS);
594 if (inode->i_security == NULL)
600 * lsm_task_alloc - allocate a composite task blob
601 * @task: the task that needs a blob
603 * Allocate the task blob for all the modules
605 * Returns 0, or -ENOMEM if memory can't be allocated.
607 static int lsm_task_alloc(struct task_struct *task)
609 if (blob_sizes.lbs_task == 0) {
610 task->security = NULL;
614 task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL);
615 if (task->security == NULL)
621 * lsm_ipc_alloc - allocate a composite ipc blob
622 * @kip: the ipc that needs a blob
624 * Allocate the ipc blob for all the modules
626 * Returns 0, or -ENOMEM if memory can't be allocated.
628 static int lsm_ipc_alloc(struct kern_ipc_perm *kip)
630 if (blob_sizes.lbs_ipc == 0) {
631 kip->security = NULL;
635 kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL);
636 if (kip->security == NULL)
642 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
643 * @mp: the msg_msg that needs a blob
645 * Allocate the ipc blob for all the modules
647 * Returns 0, or -ENOMEM if memory can't be allocated.
649 static int lsm_msg_msg_alloc(struct msg_msg *mp)
651 if (blob_sizes.lbs_msg_msg == 0) {
656 mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL);
657 if (mp->security == NULL)
663 * lsm_early_task - during initialization allocate a composite task blob
664 * @task: the task that needs a blob
666 * Allocate the task blob for all the modules
668 static void __init lsm_early_task(struct task_struct *task)
670 int rc = lsm_task_alloc(task);
673 panic("%s: Early task alloc failed.\n", __func__);
677 * lsm_superblock_alloc - allocate a composite superblock blob
678 * @sb: the superblock that needs a blob
680 * Allocate the superblock blob for all the modules
682 * Returns 0, or -ENOMEM if memory can't be allocated.
684 static int lsm_superblock_alloc(struct super_block *sb)
686 if (blob_sizes.lbs_superblock == 0) {
687 sb->s_security = NULL;
691 sb->s_security = kzalloc(blob_sizes.lbs_superblock, GFP_KERNEL);
692 if (sb->s_security == NULL)
698 * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
699 * can be accessed with:
701 * LSM_RET_DEFAULT(<hook_name>)
703 * The macros below define static constants for the default value of each
706 #define LSM_RET_DEFAULT(NAME) (NAME##_default)
707 #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
708 #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
709 static const int LSM_RET_DEFAULT(NAME) = (DEFAULT);
710 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
711 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
713 #include <linux/lsm_hook_defs.h>
717 * Hook list operation macros.
720 * This is a hook that does not return a value.
723 * This is a hook that returns a value.
726 #define call_void_hook(FUNC, ...) \
728 struct security_hook_list *P; \
730 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
731 P->hook.FUNC(__VA_ARGS__); \
734 #define call_int_hook(FUNC, IRC, ...) ({ \
737 struct security_hook_list *P; \
739 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
740 RC = P->hook.FUNC(__VA_ARGS__); \
748 /* Security operations */
750 int security_binder_set_context_mgr(const struct cred *mgr)
752 return call_int_hook(binder_set_context_mgr, 0, mgr);
755 int security_binder_transaction(const struct cred *from,
756 const struct cred *to)
758 return call_int_hook(binder_transaction, 0, from, to);
761 int security_binder_transfer_binder(const struct cred *from,
762 const struct cred *to)
764 return call_int_hook(binder_transfer_binder, 0, from, to);
767 int security_binder_transfer_file(const struct cred *from,
768 const struct cred *to, struct file *file)
770 return call_int_hook(binder_transfer_file, 0, from, to, file);
773 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
775 return call_int_hook(ptrace_access_check, 0, child, mode);
778 int security_ptrace_traceme(struct task_struct *parent)
780 return call_int_hook(ptrace_traceme, 0, parent);
783 int security_capget(struct task_struct *target,
784 kernel_cap_t *effective,
785 kernel_cap_t *inheritable,
786 kernel_cap_t *permitted)
788 return call_int_hook(capget, 0, target,
789 effective, inheritable, permitted);
792 int security_capset(struct cred *new, const struct cred *old,
793 const kernel_cap_t *effective,
794 const kernel_cap_t *inheritable,
795 const kernel_cap_t *permitted)
797 return call_int_hook(capset, 0, new, old,
798 effective, inheritable, permitted);
801 int security_capable(const struct cred *cred,
802 struct user_namespace *ns,
806 return call_int_hook(capable, 0, cred, ns, cap, opts);
809 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
811 return call_int_hook(quotactl, 0, cmds, type, id, sb);
814 int security_quota_on(struct dentry *dentry)
816 return call_int_hook(quota_on, 0, dentry);
819 int security_syslog(int type)
821 return call_int_hook(syslog, 0, type);
824 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
826 return call_int_hook(settime, 0, ts, tz);
829 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
831 struct security_hook_list *hp;
832 int cap_sys_admin = 1;
836 * The module will respond with a positive value if
837 * it thinks the __vm_enough_memory() call should be
838 * made with the cap_sys_admin set. If all of the modules
839 * agree that it should be set it will. If any module
840 * thinks it should not be set it won't.
842 hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
843 rc = hp->hook.vm_enough_memory(mm, pages);
849 return __vm_enough_memory(mm, pages, cap_sys_admin);
852 int security_bprm_creds_for_exec(struct linux_binprm *bprm)
854 return call_int_hook(bprm_creds_for_exec, 0, bprm);
857 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file)
859 return call_int_hook(bprm_creds_from_file, 0, bprm, file);
862 int security_bprm_check(struct linux_binprm *bprm)
866 ret = call_int_hook(bprm_check_security, 0, bprm);
869 return ima_bprm_check(bprm);
872 void security_bprm_committing_creds(struct linux_binprm *bprm)
874 call_void_hook(bprm_committing_creds, bprm);
877 void security_bprm_committed_creds(struct linux_binprm *bprm)
879 call_void_hook(bprm_committed_creds, bprm);
882 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc)
884 return call_int_hook(fs_context_dup, 0, fc, src_fc);
887 int security_fs_context_parse_param(struct fs_context *fc,
888 struct fs_parameter *param)
890 struct security_hook_list *hp;
894 hlist_for_each_entry(hp, &security_hook_heads.fs_context_parse_param,
896 trc = hp->hook.fs_context_parse_param(fc, param);
899 else if (trc != -ENOPARAM)
905 int security_sb_alloc(struct super_block *sb)
907 int rc = lsm_superblock_alloc(sb);
911 rc = call_int_hook(sb_alloc_security, 0, sb);
913 security_sb_free(sb);
917 void security_sb_delete(struct super_block *sb)
919 call_void_hook(sb_delete, sb);
922 void security_sb_free(struct super_block *sb)
924 call_void_hook(sb_free_security, sb);
925 kfree(sb->s_security);
926 sb->s_security = NULL;
929 void security_free_mnt_opts(void **mnt_opts)
933 call_void_hook(sb_free_mnt_opts, *mnt_opts);
936 EXPORT_SYMBOL(security_free_mnt_opts);
938 int security_sb_eat_lsm_opts(char *options, void **mnt_opts)
940 return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts);
942 EXPORT_SYMBOL(security_sb_eat_lsm_opts);
944 int security_sb_mnt_opts_compat(struct super_block *sb,
947 return call_int_hook(sb_mnt_opts_compat, 0, sb, mnt_opts);
949 EXPORT_SYMBOL(security_sb_mnt_opts_compat);
951 int security_sb_remount(struct super_block *sb,
954 return call_int_hook(sb_remount, 0, sb, mnt_opts);
956 EXPORT_SYMBOL(security_sb_remount);
958 int security_sb_kern_mount(struct super_block *sb)
960 return call_int_hook(sb_kern_mount, 0, sb);
963 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
965 return call_int_hook(sb_show_options, 0, m, sb);
968 int security_sb_statfs(struct dentry *dentry)
970 return call_int_hook(sb_statfs, 0, dentry);
973 int security_sb_mount(const char *dev_name, const struct path *path,
974 const char *type, unsigned long flags, void *data)
976 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
979 int security_sb_umount(struct vfsmount *mnt, int flags)
981 return call_int_hook(sb_umount, 0, mnt, flags);
984 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
986 return call_int_hook(sb_pivotroot, 0, old_path, new_path);
989 int security_sb_set_mnt_opts(struct super_block *sb,
991 unsigned long kern_flags,
992 unsigned long *set_kern_flags)
994 return call_int_hook(sb_set_mnt_opts,
995 mnt_opts ? -EOPNOTSUPP : 0, sb,
996 mnt_opts, kern_flags, set_kern_flags);
998 EXPORT_SYMBOL(security_sb_set_mnt_opts);
1000 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
1001 struct super_block *newsb,
1002 unsigned long kern_flags,
1003 unsigned long *set_kern_flags)
1005 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
1006 kern_flags, set_kern_flags);
1008 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
1010 int security_add_mnt_opt(const char *option, const char *val, int len,
1013 return call_int_hook(sb_add_mnt_opt, -EINVAL,
1014 option, val, len, mnt_opts);
1016 EXPORT_SYMBOL(security_add_mnt_opt);
1018 int security_move_mount(const struct path *from_path, const struct path *to_path)
1020 return call_int_hook(move_mount, 0, from_path, to_path);
1023 int security_path_notify(const struct path *path, u64 mask,
1024 unsigned int obj_type)
1026 return call_int_hook(path_notify, 0, path, mask, obj_type);
1029 int security_inode_alloc(struct inode *inode)
1031 int rc = lsm_inode_alloc(inode);
1035 rc = call_int_hook(inode_alloc_security, 0, inode);
1037 security_inode_free(inode);
1041 static void inode_free_by_rcu(struct rcu_head *head)
1044 * The rcu head is at the start of the inode blob
1046 kmem_cache_free(lsm_inode_cache, head);
1049 void security_inode_free(struct inode *inode)
1051 integrity_inode_free(inode);
1052 call_void_hook(inode_free_security, inode);
1054 * The inode may still be referenced in a path walk and
1055 * a call to security_inode_permission() can be made
1056 * after inode_free_security() is called. Ideally, the VFS
1057 * wouldn't do this, but fixing that is a much harder
1058 * job. For now, simply free the i_security via RCU, and
1059 * leave the current inode->i_security pointer intact.
1060 * The inode will be freed after the RCU grace period too.
1062 if (inode->i_security)
1063 call_rcu((struct rcu_head *)inode->i_security,
1067 int security_dentry_init_security(struct dentry *dentry, int mode,
1068 const struct qstr *name, void **ctx,
1071 return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
1074 EXPORT_SYMBOL(security_dentry_init_security);
1076 int security_dentry_create_files_as(struct dentry *dentry, int mode,
1078 const struct cred *old, struct cred *new)
1080 return call_int_hook(dentry_create_files_as, 0, dentry, mode,
1083 EXPORT_SYMBOL(security_dentry_create_files_as);
1085 int security_inode_init_security(struct inode *inode, struct inode *dir,
1086 const struct qstr *qstr,
1087 const initxattrs initxattrs, void *fs_data)
1089 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
1090 struct xattr *lsm_xattr, *evm_xattr, *xattr;
1093 if (unlikely(IS_PRIVATE(inode)))
1097 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
1098 dir, qstr, NULL, NULL, NULL);
1099 memset(new_xattrs, 0, sizeof(new_xattrs));
1100 lsm_xattr = new_xattrs;
1101 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
1104 &lsm_xattr->value_len);
1108 evm_xattr = lsm_xattr + 1;
1109 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
1112 ret = initxattrs(inode, new_xattrs, fs_data);
1114 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
1115 kfree(xattr->value);
1116 return (ret == -EOPNOTSUPP) ? 0 : ret;
1118 EXPORT_SYMBOL(security_inode_init_security);
1120 int security_inode_init_security_anon(struct inode *inode,
1121 const struct qstr *name,
1122 const struct inode *context_inode)
1124 return call_int_hook(inode_init_security_anon, 0, inode, name,
1128 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1129 const struct qstr *qstr, const char **name,
1130 void **value, size_t *len)
1132 if (unlikely(IS_PRIVATE(inode)))
1134 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
1135 qstr, name, value, len);
1137 EXPORT_SYMBOL(security_old_inode_init_security);
1139 #ifdef CONFIG_SECURITY_PATH
1140 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1143 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1145 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
1147 EXPORT_SYMBOL(security_path_mknod);
1149 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
1151 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1153 return call_int_hook(path_mkdir, 0, dir, dentry, mode);
1155 EXPORT_SYMBOL(security_path_mkdir);
1157 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1159 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1161 return call_int_hook(path_rmdir, 0, dir, dentry);
1164 int security_path_unlink(const struct path *dir, struct dentry *dentry)
1166 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1168 return call_int_hook(path_unlink, 0, dir, dentry);
1170 EXPORT_SYMBOL(security_path_unlink);
1172 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1173 const char *old_name)
1175 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1177 return call_int_hook(path_symlink, 0, dir, dentry, old_name);
1180 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1181 struct dentry *new_dentry)
1183 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1185 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
1188 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1189 const struct path *new_dir, struct dentry *new_dentry,
1192 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1193 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1196 if (flags & RENAME_EXCHANGE) {
1197 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
1198 old_dir, old_dentry);
1203 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
1206 EXPORT_SYMBOL(security_path_rename);
1208 int security_path_truncate(const struct path *path)
1210 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1212 return call_int_hook(path_truncate, 0, path);
1215 int security_path_chmod(const struct path *path, umode_t mode)
1217 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1219 return call_int_hook(path_chmod, 0, path, mode);
1222 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1224 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1226 return call_int_hook(path_chown, 0, path, uid, gid);
1229 int security_path_chroot(const struct path *path)
1231 return call_int_hook(path_chroot, 0, path);
1235 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
1237 if (unlikely(IS_PRIVATE(dir)))
1239 return call_int_hook(inode_create, 0, dir, dentry, mode);
1241 EXPORT_SYMBOL_GPL(security_inode_create);
1243 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1244 struct dentry *new_dentry)
1246 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1248 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
1251 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
1253 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1255 return call_int_hook(inode_unlink, 0, dir, dentry);
1258 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1259 const char *old_name)
1261 if (unlikely(IS_PRIVATE(dir)))
1263 return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
1266 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
1268 if (unlikely(IS_PRIVATE(dir)))
1270 return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
1272 EXPORT_SYMBOL_GPL(security_inode_mkdir);
1274 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
1276 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1278 return call_int_hook(inode_rmdir, 0, dir, dentry);
1281 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
1283 if (unlikely(IS_PRIVATE(dir)))
1285 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
1288 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1289 struct inode *new_dir, struct dentry *new_dentry,
1292 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1293 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1296 if (flags & RENAME_EXCHANGE) {
1297 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
1298 old_dir, old_dentry);
1303 return call_int_hook(inode_rename, 0, old_dir, old_dentry,
1304 new_dir, new_dentry);
1307 int security_inode_readlink(struct dentry *dentry)
1309 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1311 return call_int_hook(inode_readlink, 0, dentry);
1314 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
1317 if (unlikely(IS_PRIVATE(inode)))
1319 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
1322 int security_inode_permission(struct inode *inode, int mask)
1324 if (unlikely(IS_PRIVATE(inode)))
1326 return call_int_hook(inode_permission, 0, inode, mask);
1329 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
1333 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1335 ret = call_int_hook(inode_setattr, 0, dentry, attr);
1338 return evm_inode_setattr(dentry, attr);
1340 EXPORT_SYMBOL_GPL(security_inode_setattr);
1342 int security_inode_getattr(const struct path *path)
1344 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1346 return call_int_hook(inode_getattr, 0, path);
1349 int security_inode_setxattr(struct user_namespace *mnt_userns,
1350 struct dentry *dentry, const char *name,
1351 const void *value, size_t size, int flags)
1355 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1358 * SELinux and Smack integrate the cap call,
1359 * so assume that all LSMs supplying this call do so.
1361 ret = call_int_hook(inode_setxattr, 1, mnt_userns, dentry, name, value,
1365 ret = cap_inode_setxattr(dentry, name, value, size, flags);
1368 ret = ima_inode_setxattr(dentry, name, value, size);
1371 return evm_inode_setxattr(mnt_userns, dentry, name, value, size);
1374 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1375 const void *value, size_t size, int flags)
1377 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1379 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
1380 evm_inode_post_setxattr(dentry, name, value, size);
1383 int security_inode_getxattr(struct dentry *dentry, const char *name)
1385 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1387 return call_int_hook(inode_getxattr, 0, dentry, name);
1390 int security_inode_listxattr(struct dentry *dentry)
1392 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1394 return call_int_hook(inode_listxattr, 0, dentry);
1397 int security_inode_removexattr(struct user_namespace *mnt_userns,
1398 struct dentry *dentry, const char *name)
1402 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1405 * SELinux and Smack integrate the cap call,
1406 * so assume that all LSMs supplying this call do so.
1408 ret = call_int_hook(inode_removexattr, 1, mnt_userns, dentry, name);
1410 ret = cap_inode_removexattr(mnt_userns, dentry, name);
1413 ret = ima_inode_removexattr(dentry, name);
1416 return evm_inode_removexattr(mnt_userns, dentry, name);
1419 int security_inode_need_killpriv(struct dentry *dentry)
1421 return call_int_hook(inode_need_killpriv, 0, dentry);
1424 int security_inode_killpriv(struct user_namespace *mnt_userns,
1425 struct dentry *dentry)
1427 return call_int_hook(inode_killpriv, 0, mnt_userns, dentry);
1430 int security_inode_getsecurity(struct user_namespace *mnt_userns,
1431 struct inode *inode, const char *name,
1432 void **buffer, bool alloc)
1434 struct security_hook_list *hp;
1437 if (unlikely(IS_PRIVATE(inode)))
1438 return LSM_RET_DEFAULT(inode_getsecurity);
1440 * Only one module will provide an attribute with a given name.
1442 hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
1443 rc = hp->hook.inode_getsecurity(mnt_userns, inode, name, buffer, alloc);
1444 if (rc != LSM_RET_DEFAULT(inode_getsecurity))
1447 return LSM_RET_DEFAULT(inode_getsecurity);
1450 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
1452 struct security_hook_list *hp;
1455 if (unlikely(IS_PRIVATE(inode)))
1456 return LSM_RET_DEFAULT(inode_setsecurity);
1458 * Only one module will provide an attribute with a given name.
1460 hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
1461 rc = hp->hook.inode_setsecurity(inode, name, value, size,
1463 if (rc != LSM_RET_DEFAULT(inode_setsecurity))
1466 return LSM_RET_DEFAULT(inode_setsecurity);
1469 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
1471 if (unlikely(IS_PRIVATE(inode)))
1473 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
1475 EXPORT_SYMBOL(security_inode_listsecurity);
1477 void security_inode_getsecid(struct inode *inode, u32 *secid)
1479 call_void_hook(inode_getsecid, inode, secid);
1482 int security_inode_copy_up(struct dentry *src, struct cred **new)
1484 return call_int_hook(inode_copy_up, 0, src, new);
1486 EXPORT_SYMBOL(security_inode_copy_up);
1488 int security_inode_copy_up_xattr(const char *name)
1490 struct security_hook_list *hp;
1494 * The implementation can return 0 (accept the xattr), 1 (discard the
1495 * xattr), -EOPNOTSUPP if it does not know anything about the xattr or
1496 * any other error code incase of an error.
1498 hlist_for_each_entry(hp,
1499 &security_hook_heads.inode_copy_up_xattr, list) {
1500 rc = hp->hook.inode_copy_up_xattr(name);
1501 if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr))
1505 return LSM_RET_DEFAULT(inode_copy_up_xattr);
1507 EXPORT_SYMBOL(security_inode_copy_up_xattr);
1509 int security_kernfs_init_security(struct kernfs_node *kn_dir,
1510 struct kernfs_node *kn)
1512 return call_int_hook(kernfs_init_security, 0, kn_dir, kn);
1515 int security_file_permission(struct file *file, int mask)
1519 ret = call_int_hook(file_permission, 0, file, mask);
1523 return fsnotify_perm(file, mask);
1526 int security_file_alloc(struct file *file)
1528 int rc = lsm_file_alloc(file);
1532 rc = call_int_hook(file_alloc_security, 0, file);
1534 security_file_free(file);
1538 void security_file_free(struct file *file)
1542 call_void_hook(file_free_security, file);
1544 blob = file->f_security;
1546 file->f_security = NULL;
1547 kmem_cache_free(lsm_file_cache, blob);
1551 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1553 return call_int_hook(file_ioctl, 0, file, cmd, arg);
1555 EXPORT_SYMBOL_GPL(security_file_ioctl);
1557 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
1560 * Does we have PROT_READ and does the application expect
1561 * it to imply PROT_EXEC? If not, nothing to talk about...
1563 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
1565 if (!(current->personality & READ_IMPLIES_EXEC))
1568 * if that's an anonymous mapping, let it.
1571 return prot | PROT_EXEC;
1573 * ditto if it's not on noexec mount, except that on !MMU we need
1574 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1576 if (!path_noexec(&file->f_path)) {
1578 if (file->f_op->mmap_capabilities) {
1579 unsigned caps = file->f_op->mmap_capabilities(file);
1580 if (!(caps & NOMMU_MAP_EXEC))
1584 return prot | PROT_EXEC;
1586 /* anything on noexec mount won't get PROT_EXEC */
1590 int security_mmap_file(struct file *file, unsigned long prot,
1591 unsigned long flags)
1594 ret = call_int_hook(mmap_file, 0, file, prot,
1595 mmap_prot(file, prot), flags);
1598 return ima_file_mmap(file, prot);
1601 int security_mmap_addr(unsigned long addr)
1603 return call_int_hook(mmap_addr, 0, addr);
1606 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1611 ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot);
1614 return ima_file_mprotect(vma, prot);
1617 int security_file_lock(struct file *file, unsigned int cmd)
1619 return call_int_hook(file_lock, 0, file, cmd);
1622 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
1624 return call_int_hook(file_fcntl, 0, file, cmd, arg);
1627 void security_file_set_fowner(struct file *file)
1629 call_void_hook(file_set_fowner, file);
1632 int security_file_send_sigiotask(struct task_struct *tsk,
1633 struct fown_struct *fown, int sig)
1635 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
1638 int security_file_receive(struct file *file)
1640 return call_int_hook(file_receive, 0, file);
1643 int security_file_open(struct file *file)
1647 ret = call_int_hook(file_open, 0, file);
1651 return fsnotify_perm(file, MAY_OPEN);
1654 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
1656 int rc = lsm_task_alloc(task);
1660 rc = call_int_hook(task_alloc, 0, task, clone_flags);
1662 security_task_free(task);
1666 void security_task_free(struct task_struct *task)
1668 call_void_hook(task_free, task);
1670 kfree(task->security);
1671 task->security = NULL;
1674 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1676 int rc = lsm_cred_alloc(cred, gfp);
1681 rc = call_int_hook(cred_alloc_blank, 0, cred, gfp);
1683 security_cred_free(cred);
1687 void security_cred_free(struct cred *cred)
1690 * There is a failure case in prepare_creds() that
1691 * may result in a call here with ->security being NULL.
1693 if (unlikely(cred->security == NULL))
1696 call_void_hook(cred_free, cred);
1698 kfree(cred->security);
1699 cred->security = NULL;
1702 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1704 int rc = lsm_cred_alloc(new, gfp);
1709 rc = call_int_hook(cred_prepare, 0, new, old, gfp);
1711 security_cred_free(new);
1715 void security_transfer_creds(struct cred *new, const struct cred *old)
1717 call_void_hook(cred_transfer, new, old);
1720 void security_cred_getsecid(const struct cred *c, u32 *secid)
1723 call_void_hook(cred_getsecid, c, secid);
1725 EXPORT_SYMBOL(security_cred_getsecid);
1727 int security_kernel_act_as(struct cred *new, u32 secid)
1729 return call_int_hook(kernel_act_as, 0, new, secid);
1732 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1734 return call_int_hook(kernel_create_files_as, 0, new, inode);
1737 int security_kernel_module_request(char *kmod_name)
1741 ret = call_int_hook(kernel_module_request, 0, kmod_name);
1744 return integrity_kernel_module_request(kmod_name);
1747 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id,
1752 ret = call_int_hook(kernel_read_file, 0, file, id, contents);
1755 return ima_read_file(file, id, contents);
1757 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1759 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1760 enum kernel_read_file_id id)
1764 ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1767 return ima_post_read_file(file, buf, size, id);
1769 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1771 int security_kernel_load_data(enum kernel_load_data_id id, bool contents)
1775 ret = call_int_hook(kernel_load_data, 0, id, contents);
1778 return ima_load_data(id, contents);
1780 EXPORT_SYMBOL_GPL(security_kernel_load_data);
1782 int security_kernel_post_load_data(char *buf, loff_t size,
1783 enum kernel_load_data_id id,
1788 ret = call_int_hook(kernel_post_load_data, 0, buf, size, id,
1792 return ima_post_load_data(buf, size, id, description);
1794 EXPORT_SYMBOL_GPL(security_kernel_post_load_data);
1796 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1799 return call_int_hook(task_fix_setuid, 0, new, old, flags);
1802 int security_task_fix_setgid(struct cred *new, const struct cred *old,
1805 return call_int_hook(task_fix_setgid, 0, new, old, flags);
1808 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1810 return call_int_hook(task_setpgid, 0, p, pgid);
1813 int security_task_getpgid(struct task_struct *p)
1815 return call_int_hook(task_getpgid, 0, p);
1818 int security_task_getsid(struct task_struct *p)
1820 return call_int_hook(task_getsid, 0, p);
1823 void security_task_getsecid_subj(struct task_struct *p, u32 *secid)
1826 call_void_hook(task_getsecid_subj, p, secid);
1828 EXPORT_SYMBOL(security_task_getsecid_subj);
1830 void security_task_getsecid_obj(struct task_struct *p, u32 *secid)
1833 call_void_hook(task_getsecid_obj, p, secid);
1835 EXPORT_SYMBOL(security_task_getsecid_obj);
1837 int security_task_setnice(struct task_struct *p, int nice)
1839 return call_int_hook(task_setnice, 0, p, nice);
1842 int security_task_setioprio(struct task_struct *p, int ioprio)
1844 return call_int_hook(task_setioprio, 0, p, ioprio);
1847 int security_task_getioprio(struct task_struct *p)
1849 return call_int_hook(task_getioprio, 0, p);
1852 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1855 return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1858 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1859 struct rlimit *new_rlim)
1861 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1864 int security_task_setscheduler(struct task_struct *p)
1866 return call_int_hook(task_setscheduler, 0, p);
1869 int security_task_getscheduler(struct task_struct *p)
1871 return call_int_hook(task_getscheduler, 0, p);
1874 int security_task_movememory(struct task_struct *p)
1876 return call_int_hook(task_movememory, 0, p);
1879 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
1880 int sig, const struct cred *cred)
1882 return call_int_hook(task_kill, 0, p, info, sig, cred);
1885 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1886 unsigned long arg4, unsigned long arg5)
1889 int rc = LSM_RET_DEFAULT(task_prctl);
1890 struct security_hook_list *hp;
1892 hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1893 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1894 if (thisrc != LSM_RET_DEFAULT(task_prctl)) {
1903 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1905 call_void_hook(task_to_inode, p, inode);
1908 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1910 return call_int_hook(ipc_permission, 0, ipcp, flag);
1913 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1916 call_void_hook(ipc_getsecid, ipcp, secid);
1919 int security_msg_msg_alloc(struct msg_msg *msg)
1921 int rc = lsm_msg_msg_alloc(msg);
1925 rc = call_int_hook(msg_msg_alloc_security, 0, msg);
1927 security_msg_msg_free(msg);
1931 void security_msg_msg_free(struct msg_msg *msg)
1933 call_void_hook(msg_msg_free_security, msg);
1934 kfree(msg->security);
1935 msg->security = NULL;
1938 int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1940 int rc = lsm_ipc_alloc(msq);
1944 rc = call_int_hook(msg_queue_alloc_security, 0, msq);
1946 security_msg_queue_free(msq);
1950 void security_msg_queue_free(struct kern_ipc_perm *msq)
1952 call_void_hook(msg_queue_free_security, msq);
1953 kfree(msq->security);
1954 msq->security = NULL;
1957 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1959 return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1962 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1964 return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1967 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1968 struct msg_msg *msg, int msqflg)
1970 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1973 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1974 struct task_struct *target, long type, int mode)
1976 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1979 int security_shm_alloc(struct kern_ipc_perm *shp)
1981 int rc = lsm_ipc_alloc(shp);
1985 rc = call_int_hook(shm_alloc_security, 0, shp);
1987 security_shm_free(shp);
1991 void security_shm_free(struct kern_ipc_perm *shp)
1993 call_void_hook(shm_free_security, shp);
1994 kfree(shp->security);
1995 shp->security = NULL;
1998 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
2000 return call_int_hook(shm_associate, 0, shp, shmflg);
2003 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
2005 return call_int_hook(shm_shmctl, 0, shp, cmd);
2008 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
2010 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
2013 int security_sem_alloc(struct kern_ipc_perm *sma)
2015 int rc = lsm_ipc_alloc(sma);
2019 rc = call_int_hook(sem_alloc_security, 0, sma);
2021 security_sem_free(sma);
2025 void security_sem_free(struct kern_ipc_perm *sma)
2027 call_void_hook(sem_free_security, sma);
2028 kfree(sma->security);
2029 sma->security = NULL;
2032 int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
2034 return call_int_hook(sem_associate, 0, sma, semflg);
2037 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
2039 return call_int_hook(sem_semctl, 0, sma, cmd);
2042 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
2043 unsigned nsops, int alter)
2045 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
2048 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2050 if (unlikely(inode && IS_PRIVATE(inode)))
2052 call_void_hook(d_instantiate, dentry, inode);
2054 EXPORT_SYMBOL(security_d_instantiate);
2056 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
2059 struct security_hook_list *hp;
2061 hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) {
2062 if (lsm != NULL && strcmp(lsm, hp->lsm))
2064 return hp->hook.getprocattr(p, name, value);
2066 return LSM_RET_DEFAULT(getprocattr);
2069 int security_setprocattr(const char *lsm, const char *name, void *value,
2072 struct security_hook_list *hp;
2074 hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) {
2075 if (lsm != NULL && strcmp(lsm, hp->lsm))
2077 return hp->hook.setprocattr(name, value, size);
2079 return LSM_RET_DEFAULT(setprocattr);
2082 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2084 return call_int_hook(netlink_send, 0, sk, skb);
2087 int security_ismaclabel(const char *name)
2089 return call_int_hook(ismaclabel, 0, name);
2091 EXPORT_SYMBOL(security_ismaclabel);
2093 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2095 struct security_hook_list *hp;
2099 * Currently, only one LSM can implement secid_to_secctx (i.e this
2100 * LSM hook is not "stackable").
2102 hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) {
2103 rc = hp->hook.secid_to_secctx(secid, secdata, seclen);
2104 if (rc != LSM_RET_DEFAULT(secid_to_secctx))
2108 return LSM_RET_DEFAULT(secid_to_secctx);
2110 EXPORT_SYMBOL(security_secid_to_secctx);
2112 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
2115 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
2117 EXPORT_SYMBOL(security_secctx_to_secid);
2119 void security_release_secctx(char *secdata, u32 seclen)
2121 call_void_hook(release_secctx, secdata, seclen);
2123 EXPORT_SYMBOL(security_release_secctx);
2125 void security_inode_invalidate_secctx(struct inode *inode)
2127 call_void_hook(inode_invalidate_secctx, inode);
2129 EXPORT_SYMBOL(security_inode_invalidate_secctx);
2131 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2133 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
2135 EXPORT_SYMBOL(security_inode_notifysecctx);
2137 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2139 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
2141 EXPORT_SYMBOL(security_inode_setsecctx);
2143 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2145 return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
2147 EXPORT_SYMBOL(security_inode_getsecctx);
2149 #ifdef CONFIG_WATCH_QUEUE
2150 int security_post_notification(const struct cred *w_cred,
2151 const struct cred *cred,
2152 struct watch_notification *n)
2154 return call_int_hook(post_notification, 0, w_cred, cred, n);
2156 #endif /* CONFIG_WATCH_QUEUE */
2158 #ifdef CONFIG_KEY_NOTIFICATIONS
2159 int security_watch_key(struct key *key)
2161 return call_int_hook(watch_key, 0, key);
2165 #ifdef CONFIG_SECURITY_NETWORK
2167 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
2169 return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
2171 EXPORT_SYMBOL(security_unix_stream_connect);
2173 int security_unix_may_send(struct socket *sock, struct socket *other)
2175 return call_int_hook(unix_may_send, 0, sock, other);
2177 EXPORT_SYMBOL(security_unix_may_send);
2179 int security_socket_create(int family, int type, int protocol, int kern)
2181 return call_int_hook(socket_create, 0, family, type, protocol, kern);
2184 int security_socket_post_create(struct socket *sock, int family,
2185 int type, int protocol, int kern)
2187 return call_int_hook(socket_post_create, 0, sock, family, type,
2191 int security_socket_socketpair(struct socket *socka, struct socket *sockb)
2193 return call_int_hook(socket_socketpair, 0, socka, sockb);
2195 EXPORT_SYMBOL(security_socket_socketpair);
2197 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
2199 return call_int_hook(socket_bind, 0, sock, address, addrlen);
2202 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
2204 return call_int_hook(socket_connect, 0, sock, address, addrlen);
2207 int security_socket_listen(struct socket *sock, int backlog)
2209 return call_int_hook(socket_listen, 0, sock, backlog);
2212 int security_socket_accept(struct socket *sock, struct socket *newsock)
2214 return call_int_hook(socket_accept, 0, sock, newsock);
2217 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
2219 return call_int_hook(socket_sendmsg, 0, sock, msg, size);
2222 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2223 int size, int flags)
2225 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
2228 int security_socket_getsockname(struct socket *sock)
2230 return call_int_hook(socket_getsockname, 0, sock);
2233 int security_socket_getpeername(struct socket *sock)
2235 return call_int_hook(socket_getpeername, 0, sock);
2238 int security_socket_getsockopt(struct socket *sock, int level, int optname)
2240 return call_int_hook(socket_getsockopt, 0, sock, level, optname);
2243 int security_socket_setsockopt(struct socket *sock, int level, int optname)
2245 return call_int_hook(socket_setsockopt, 0, sock, level, optname);
2248 int security_socket_shutdown(struct socket *sock, int how)
2250 return call_int_hook(socket_shutdown, 0, sock, how);
2253 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
2255 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
2257 EXPORT_SYMBOL(security_sock_rcv_skb);
2259 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2260 int __user *optlen, unsigned len)
2262 return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
2263 optval, optlen, len);
2266 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2268 return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
2271 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
2273 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2275 return call_int_hook(sk_alloc_security, 0, sk, family, priority);
2278 void security_sk_free(struct sock *sk)
2280 call_void_hook(sk_free_security, sk);
2283 void security_sk_clone(const struct sock *sk, struct sock *newsk)
2285 call_void_hook(sk_clone_security, sk, newsk);
2287 EXPORT_SYMBOL(security_sk_clone);
2289 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic)
2291 call_void_hook(sk_getsecid, sk, &flic->flowic_secid);
2293 EXPORT_SYMBOL(security_sk_classify_flow);
2295 void security_req_classify_flow(const struct request_sock *req,
2296 struct flowi_common *flic)
2298 call_void_hook(req_classify_flow, req, flic);
2300 EXPORT_SYMBOL(security_req_classify_flow);
2302 void security_sock_graft(struct sock *sk, struct socket *parent)
2304 call_void_hook(sock_graft, sk, parent);
2306 EXPORT_SYMBOL(security_sock_graft);
2308 int security_inet_conn_request(const struct sock *sk,
2309 struct sk_buff *skb, struct request_sock *req)
2311 return call_int_hook(inet_conn_request, 0, sk, skb, req);
2313 EXPORT_SYMBOL(security_inet_conn_request);
2315 void security_inet_csk_clone(struct sock *newsk,
2316 const struct request_sock *req)
2318 call_void_hook(inet_csk_clone, newsk, req);
2321 void security_inet_conn_established(struct sock *sk,
2322 struct sk_buff *skb)
2324 call_void_hook(inet_conn_established, sk, skb);
2326 EXPORT_SYMBOL(security_inet_conn_established);
2328 int security_secmark_relabel_packet(u32 secid)
2330 return call_int_hook(secmark_relabel_packet, 0, secid);
2332 EXPORT_SYMBOL(security_secmark_relabel_packet);
2334 void security_secmark_refcount_inc(void)
2336 call_void_hook(secmark_refcount_inc);
2338 EXPORT_SYMBOL(security_secmark_refcount_inc);
2340 void security_secmark_refcount_dec(void)
2342 call_void_hook(secmark_refcount_dec);
2344 EXPORT_SYMBOL(security_secmark_refcount_dec);
2346 int security_tun_dev_alloc_security(void **security)
2348 return call_int_hook(tun_dev_alloc_security, 0, security);
2350 EXPORT_SYMBOL(security_tun_dev_alloc_security);
2352 void security_tun_dev_free_security(void *security)
2354 call_void_hook(tun_dev_free_security, security);
2356 EXPORT_SYMBOL(security_tun_dev_free_security);
2358 int security_tun_dev_create(void)
2360 return call_int_hook(tun_dev_create, 0);
2362 EXPORT_SYMBOL(security_tun_dev_create);
2364 int security_tun_dev_attach_queue(void *security)
2366 return call_int_hook(tun_dev_attach_queue, 0, security);
2368 EXPORT_SYMBOL(security_tun_dev_attach_queue);
2370 int security_tun_dev_attach(struct sock *sk, void *security)
2372 return call_int_hook(tun_dev_attach, 0, sk, security);
2374 EXPORT_SYMBOL(security_tun_dev_attach);
2376 int security_tun_dev_open(void *security)
2378 return call_int_hook(tun_dev_open, 0, security);
2380 EXPORT_SYMBOL(security_tun_dev_open);
2382 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb)
2384 return call_int_hook(sctp_assoc_request, 0, ep, skb);
2386 EXPORT_SYMBOL(security_sctp_assoc_request);
2388 int security_sctp_bind_connect(struct sock *sk, int optname,
2389 struct sockaddr *address, int addrlen)
2391 return call_int_hook(sctp_bind_connect, 0, sk, optname,
2394 EXPORT_SYMBOL(security_sctp_bind_connect);
2396 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
2399 call_void_hook(sctp_sk_clone, ep, sk, newsk);
2401 EXPORT_SYMBOL(security_sctp_sk_clone);
2403 #endif /* CONFIG_SECURITY_NETWORK */
2405 #ifdef CONFIG_SECURITY_INFINIBAND
2407 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
2409 return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
2411 EXPORT_SYMBOL(security_ib_pkey_access);
2413 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
2415 return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
2417 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
2419 int security_ib_alloc_security(void **sec)
2421 return call_int_hook(ib_alloc_security, 0, sec);
2423 EXPORT_SYMBOL(security_ib_alloc_security);
2425 void security_ib_free_security(void *sec)
2427 call_void_hook(ib_free_security, sec);
2429 EXPORT_SYMBOL(security_ib_free_security);
2430 #endif /* CONFIG_SECURITY_INFINIBAND */
2432 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2434 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2435 struct xfrm_user_sec_ctx *sec_ctx,
2438 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
2440 EXPORT_SYMBOL(security_xfrm_policy_alloc);
2442 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
2443 struct xfrm_sec_ctx **new_ctxp)
2445 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
2448 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2450 call_void_hook(xfrm_policy_free_security, ctx);
2452 EXPORT_SYMBOL(security_xfrm_policy_free);
2454 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2456 return call_int_hook(xfrm_policy_delete_security, 0, ctx);
2459 int security_xfrm_state_alloc(struct xfrm_state *x,
2460 struct xfrm_user_sec_ctx *sec_ctx)
2462 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
2464 EXPORT_SYMBOL(security_xfrm_state_alloc);
2466 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2467 struct xfrm_sec_ctx *polsec, u32 secid)
2469 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
2472 int security_xfrm_state_delete(struct xfrm_state *x)
2474 return call_int_hook(xfrm_state_delete_security, 0, x);
2476 EXPORT_SYMBOL(security_xfrm_state_delete);
2478 void security_xfrm_state_free(struct xfrm_state *x)
2480 call_void_hook(xfrm_state_free_security, x);
2483 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid)
2485 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid);
2488 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2489 struct xfrm_policy *xp,
2490 const struct flowi_common *flic)
2492 struct security_hook_list *hp;
2493 int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match);
2496 * Since this function is expected to return 0 or 1, the judgment
2497 * becomes difficult if multiple LSMs supply this call. Fortunately,
2498 * we can use the first LSM's judgment because currently only SELinux
2499 * supplies this call.
2501 * For speed optimization, we explicitly break the loop rather than
2504 hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
2506 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic);
2512 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2514 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
2517 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic)
2519 int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid,
2524 EXPORT_SYMBOL(security_skb_classify_flow);
2526 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2530 int security_key_alloc(struct key *key, const struct cred *cred,
2531 unsigned long flags)
2533 return call_int_hook(key_alloc, 0, key, cred, flags);
2536 void security_key_free(struct key *key)
2538 call_void_hook(key_free, key);
2541 int security_key_permission(key_ref_t key_ref, const struct cred *cred,
2542 enum key_need_perm need_perm)
2544 return call_int_hook(key_permission, 0, key_ref, cred, need_perm);
2547 int security_key_getsecurity(struct key *key, char **_buffer)
2550 return call_int_hook(key_getsecurity, 0, key, _buffer);
2553 #endif /* CONFIG_KEYS */
2557 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
2559 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
2562 int security_audit_rule_known(struct audit_krule *krule)
2564 return call_int_hook(audit_rule_known, 0, krule);
2567 void security_audit_rule_free(void *lsmrule)
2569 call_void_hook(audit_rule_free, lsmrule);
2572 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule)
2574 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule);
2576 #endif /* CONFIG_AUDIT */
2578 #ifdef CONFIG_BPF_SYSCALL
2579 int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
2581 return call_int_hook(bpf, 0, cmd, attr, size);
2583 int security_bpf_map(struct bpf_map *map, fmode_t fmode)
2585 return call_int_hook(bpf_map, 0, map, fmode);
2587 int security_bpf_prog(struct bpf_prog *prog)
2589 return call_int_hook(bpf_prog, 0, prog);
2591 int security_bpf_map_alloc(struct bpf_map *map)
2593 return call_int_hook(bpf_map_alloc_security, 0, map);
2595 int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
2597 return call_int_hook(bpf_prog_alloc_security, 0, aux);
2599 void security_bpf_map_free(struct bpf_map *map)
2601 call_void_hook(bpf_map_free_security, map);
2603 void security_bpf_prog_free(struct bpf_prog_aux *aux)
2605 call_void_hook(bpf_prog_free_security, aux);
2607 #endif /* CONFIG_BPF_SYSCALL */
2609 int security_locked_down(enum lockdown_reason what)
2611 return call_int_hook(locked_down, 0, what);
2613 EXPORT_SYMBOL(security_locked_down);
2615 #ifdef CONFIG_PERF_EVENTS
2616 int security_perf_event_open(struct perf_event_attr *attr, int type)
2618 return call_int_hook(perf_event_open, 0, attr, type);
2621 int security_perf_event_alloc(struct perf_event *event)
2623 return call_int_hook(perf_event_alloc, 0, event);
2626 void security_perf_event_free(struct perf_event *event)
2628 call_void_hook(perf_event_free, event);
2631 int security_perf_event_read(struct perf_event *event)
2633 return call_int_hook(perf_event_read, 0, event);
2636 int security_perf_event_write(struct perf_event *event)
2638 return call_int_hook(perf_event_write, 0, event);
2640 #endif /* CONFIG_PERF_EVENTS */