1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Security plug functions
5 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
7 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
8 * Copyright (C) 2016 Mellanox Technologies
11 #define pr_fmt(fmt) "LSM: " fmt
13 #include <linux/bpf.h>
14 #include <linux/capability.h>
15 #include <linux/dcache.h>
16 #include <linux/export.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/kernel_read_file.h>
20 #include <linux/lsm_hooks.h>
21 #include <linux/integrity.h>
22 #include <linux/ima.h>
23 #include <linux/evm.h>
24 #include <linux/fsnotify.h>
25 #include <linux/mman.h>
26 #include <linux/mount.h>
27 #include <linux/personality.h>
28 #include <linux/backing-dev.h>
29 #include <linux/string.h>
30 #include <linux/msg.h>
33 #define MAX_LSM_EVM_XATTR 2
35 /* How many LSMs were built into the kernel? */
36 #define LSM_COUNT (__end_lsm_info - __start_lsm_info)
39 * These are descriptions of the reasons that can be passed to the
40 * security_locked_down() LSM hook. Placing this array here allows
41 * all security modules to use the same descriptions for auditing
44 const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = {
45 [LOCKDOWN_NONE] = "none",
46 [LOCKDOWN_MODULE_SIGNATURE] = "unsigned module loading",
47 [LOCKDOWN_DEV_MEM] = "/dev/mem,kmem,port",
48 [LOCKDOWN_EFI_TEST] = "/dev/efi_test access",
49 [LOCKDOWN_KEXEC] = "kexec of unsigned images",
50 [LOCKDOWN_HIBERNATION] = "hibernation",
51 [LOCKDOWN_PCI_ACCESS] = "direct PCI access",
52 [LOCKDOWN_IOPORT] = "raw io port access",
53 [LOCKDOWN_MSR] = "raw MSR access",
54 [LOCKDOWN_ACPI_TABLES] = "modifying ACPI tables",
55 [LOCKDOWN_PCMCIA_CIS] = "direct PCMCIA CIS storage",
56 [LOCKDOWN_TIOCSSERIAL] = "reconfiguration of serial port IO",
57 [LOCKDOWN_MODULE_PARAMETERS] = "unsafe module parameters",
58 [LOCKDOWN_MMIOTRACE] = "unsafe mmio",
59 [LOCKDOWN_DEBUGFS] = "debugfs access",
60 [LOCKDOWN_XMON_WR] = "xmon write access",
61 [LOCKDOWN_BPF_WRITE_USER] = "use of bpf to write user RAM",
62 [LOCKDOWN_DBG_WRITE_KERNEL] = "use of kgdb/kdb to write kernel RAM",
63 [LOCKDOWN_INTEGRITY_MAX] = "integrity",
64 [LOCKDOWN_KCORE] = "/proc/kcore access",
65 [LOCKDOWN_KPROBES] = "use of kprobes",
66 [LOCKDOWN_BPF_READ] = "use of bpf to read kernel RAM",
67 [LOCKDOWN_DBG_READ_KERNEL] = "use of kgdb/kdb to read kernel RAM",
68 [LOCKDOWN_PERF] = "unsafe use of perf",
69 [LOCKDOWN_TRACEFS] = "use of tracefs",
70 [LOCKDOWN_XMON_RW] = "xmon read and write access",
71 [LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality",
74 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
75 static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain);
77 static struct kmem_cache *lsm_file_cache;
78 static struct kmem_cache *lsm_inode_cache;
81 static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init;
83 /* Boot-time LSM user choice */
84 static __initdata const char *chosen_lsm_order;
85 static __initdata const char *chosen_major_lsm;
87 static __initconst const char * const builtin_lsm_order = CONFIG_LSM;
89 /* Ordered list of LSMs to initialize. */
90 static __initdata struct lsm_info **ordered_lsms;
91 static __initdata struct lsm_info *exclusive;
93 static __initdata bool debug;
94 #define init_debug(...) \
97 pr_info(__VA_ARGS__); \
100 static bool __init is_enabled(struct lsm_info *lsm)
105 return *lsm->enabled;
108 /* Mark an LSM's enabled flag. */
109 static int lsm_enabled_true __initdata = 1;
110 static int lsm_enabled_false __initdata = 0;
111 static void __init set_enabled(struct lsm_info *lsm, bool enabled)
114 * When an LSM hasn't configured an enable variable, we can use
115 * a hard-coded location for storing the default enabled state.
119 lsm->enabled = &lsm_enabled_true;
121 lsm->enabled = &lsm_enabled_false;
122 } else if (lsm->enabled == &lsm_enabled_true) {
124 lsm->enabled = &lsm_enabled_false;
125 } else if (lsm->enabled == &lsm_enabled_false) {
127 lsm->enabled = &lsm_enabled_true;
129 *lsm->enabled = enabled;
133 /* Is an LSM already listed in the ordered LSMs list? */
134 static bool __init exists_ordered_lsm(struct lsm_info *lsm)
136 struct lsm_info **check;
138 for (check = ordered_lsms; *check; check++)
145 /* Append an LSM to the list of ordered LSMs to initialize. */
146 static int last_lsm __initdata;
147 static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from)
149 /* Ignore duplicate selections. */
150 if (exists_ordered_lsm(lsm))
153 if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from))
156 /* Enable this LSM, if it is not already set. */
158 lsm->enabled = &lsm_enabled_true;
159 ordered_lsms[last_lsm++] = lsm;
161 init_debug("%s ordering: %s (%sabled)\n", from, lsm->name,
162 is_enabled(lsm) ? "en" : "dis");
165 /* Is an LSM allowed to be initialized? */
166 static bool __init lsm_allowed(struct lsm_info *lsm)
168 /* Skip if the LSM is disabled. */
169 if (!is_enabled(lsm))
172 /* Not allowed if another exclusive LSM already initialized. */
173 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) {
174 init_debug("exclusive disabled: %s\n", lsm->name);
181 static void __init lsm_set_blob_size(int *need, int *lbs)
192 static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed)
197 lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred);
198 lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file);
200 * The inode blob gets an rcu_head in addition to
201 * what the modules might need.
203 if (needed->lbs_inode && blob_sizes.lbs_inode == 0)
204 blob_sizes.lbs_inode = sizeof(struct rcu_head);
205 lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode);
206 lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc);
207 lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg);
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("task blob size = %d\n", blob_sizes.lbs_task);
346 * Create any kmem_caches needed for blobs
348 if (blob_sizes.lbs_file)
349 lsm_file_cache = kmem_cache_create("lsm_file_cache",
350 blob_sizes.lbs_file, 0,
352 if (blob_sizes.lbs_inode)
353 lsm_inode_cache = kmem_cache_create("lsm_inode_cache",
354 blob_sizes.lbs_inode, 0,
357 lsm_early_cred((struct cred *) current->cred);
358 lsm_early_task(current);
359 for (lsm = ordered_lsms; *lsm; lsm++)
360 initialize_lsm(*lsm);
365 int __init early_security_init(void)
368 struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
369 struct lsm_info *lsm;
371 for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
373 INIT_HLIST_HEAD(&list[i]);
375 for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) {
377 lsm->enabled = &lsm_enabled_true;
386 * security_init - initializes the security framework
388 * This should be called early in the kernel initialization sequence.
390 int __init security_init(void)
392 struct lsm_info *lsm;
394 pr_info("Security Framework initializing\n");
397 * Append the names of the early LSM modules now that kmalloc() is
400 for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) {
402 lsm_append(lsm->name, &lsm_names);
405 /* Load LSMs in specified order. */
411 /* Save user chosen LSM */
412 static int __init choose_major_lsm(char *str)
414 chosen_major_lsm = str;
417 __setup("security=", choose_major_lsm);
419 /* Explicitly choose LSM initialization order. */
420 static int __init choose_lsm_order(char *str)
422 chosen_lsm_order = str;
425 __setup("lsm=", choose_lsm_order);
427 /* Enable LSM order debugging. */
428 static int __init enable_debug(char *str)
433 __setup("lsm.debug", enable_debug);
435 static bool match_last_lsm(const char *list, const char *lsm)
439 if (WARN_ON(!list || !lsm))
441 last = strrchr(list, ',');
443 /* Pass the comma, strcmp() will check for '\0' */
447 return !strcmp(last, lsm);
450 static int lsm_append(const char *new, char **result)
454 if (*result == NULL) {
455 *result = kstrdup(new, GFP_KERNEL);
459 /* Check if it is the last registered name */
460 if (match_last_lsm(*result, new))
462 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
472 * security_add_hooks - Add a modules hooks to the hook lists.
473 * @hooks: the hooks to add
474 * @count: the number of hooks to add
475 * @lsm: the name of the security module
477 * Each LSM has to register its hooks with the infrastructure.
479 void __init security_add_hooks(struct security_hook_list *hooks, int count,
484 for (i = 0; i < count; i++) {
486 hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
490 * Don't try to append during early_security_init(), we'll come back
491 * and fix this up afterwards.
493 if (slab_is_available()) {
494 if (lsm_append(lsm, &lsm_names) < 0)
495 panic("%s - Cannot get early memory.\n", __func__);
499 int call_blocking_lsm_notifier(enum lsm_event event, void *data)
501 return blocking_notifier_call_chain(&blocking_lsm_notifier_chain,
504 EXPORT_SYMBOL(call_blocking_lsm_notifier);
506 int register_blocking_lsm_notifier(struct notifier_block *nb)
508 return blocking_notifier_chain_register(&blocking_lsm_notifier_chain,
511 EXPORT_SYMBOL(register_blocking_lsm_notifier);
513 int unregister_blocking_lsm_notifier(struct notifier_block *nb)
515 return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain,
518 EXPORT_SYMBOL(unregister_blocking_lsm_notifier);
521 * lsm_cred_alloc - allocate a composite cred blob
522 * @cred: the cred that needs a blob
523 * @gfp: allocation type
525 * Allocate the cred blob for all the modules
527 * Returns 0, or -ENOMEM if memory can't be allocated.
529 static int lsm_cred_alloc(struct cred *cred, gfp_t gfp)
531 if (blob_sizes.lbs_cred == 0) {
532 cred->security = NULL;
536 cred->security = kzalloc(blob_sizes.lbs_cred, gfp);
537 if (cred->security == NULL)
543 * lsm_early_cred - during initialization allocate a composite cred blob
544 * @cred: the cred that needs a blob
546 * Allocate the cred blob for all the modules
548 static void __init lsm_early_cred(struct cred *cred)
550 int rc = lsm_cred_alloc(cred, GFP_KERNEL);
553 panic("%s: Early cred alloc failed.\n", __func__);
557 * lsm_file_alloc - allocate a composite file blob
558 * @file: the file that needs a blob
560 * Allocate the file blob for all the modules
562 * Returns 0, or -ENOMEM if memory can't be allocated.
564 static int lsm_file_alloc(struct file *file)
566 if (!lsm_file_cache) {
567 file->f_security = NULL;
571 file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL);
572 if (file->f_security == NULL)
578 * lsm_inode_alloc - allocate a composite inode blob
579 * @inode: the inode that needs a blob
581 * Allocate the inode blob for all the modules
583 * Returns 0, or -ENOMEM if memory can't be allocated.
585 int lsm_inode_alloc(struct inode *inode)
587 if (!lsm_inode_cache) {
588 inode->i_security = NULL;
592 inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS);
593 if (inode->i_security == NULL)
599 * lsm_task_alloc - allocate a composite task blob
600 * @task: the task that needs a blob
602 * Allocate the task blob for all the modules
604 * Returns 0, or -ENOMEM if memory can't be allocated.
606 static int lsm_task_alloc(struct task_struct *task)
608 if (blob_sizes.lbs_task == 0) {
609 task->security = NULL;
613 task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL);
614 if (task->security == NULL)
620 * lsm_ipc_alloc - allocate a composite ipc blob
621 * @kip: the ipc that needs a blob
623 * Allocate the ipc blob for all the modules
625 * Returns 0, or -ENOMEM if memory can't be allocated.
627 static int lsm_ipc_alloc(struct kern_ipc_perm *kip)
629 if (blob_sizes.lbs_ipc == 0) {
630 kip->security = NULL;
634 kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL);
635 if (kip->security == NULL)
641 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
642 * @mp: the msg_msg that needs a blob
644 * Allocate the ipc blob for all the modules
646 * Returns 0, or -ENOMEM if memory can't be allocated.
648 static int lsm_msg_msg_alloc(struct msg_msg *mp)
650 if (blob_sizes.lbs_msg_msg == 0) {
655 mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL);
656 if (mp->security == NULL)
662 * lsm_early_task - during initialization allocate a composite task blob
663 * @task: the task that needs a blob
665 * Allocate the task blob for all the modules
667 static void __init lsm_early_task(struct task_struct *task)
669 int rc = lsm_task_alloc(task);
672 panic("%s: Early task alloc failed.\n", __func__);
676 * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and
677 * can be accessed with:
679 * LSM_RET_DEFAULT(<hook_name>)
681 * The macros below define static constants for the default value of each
684 #define LSM_RET_DEFAULT(NAME) (NAME##_default)
685 #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME)
686 #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \
687 static const int LSM_RET_DEFAULT(NAME) = (DEFAULT);
688 #define LSM_HOOK(RET, DEFAULT, NAME, ...) \
689 DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME)
691 #include <linux/lsm_hook_defs.h>
695 * Hook list operation macros.
698 * This is a hook that does not return a value.
701 * This is a hook that returns a value.
704 #define call_void_hook(FUNC, ...) \
706 struct security_hook_list *P; \
708 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
709 P->hook.FUNC(__VA_ARGS__); \
712 #define call_int_hook(FUNC, IRC, ...) ({ \
715 struct security_hook_list *P; \
717 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
718 RC = P->hook.FUNC(__VA_ARGS__); \
726 /* Security operations */
728 int security_binder_set_context_mgr(const struct cred *mgr)
730 return call_int_hook(binder_set_context_mgr, 0, mgr);
733 int security_binder_transaction(const struct cred *from,
734 const struct cred *to)
736 return call_int_hook(binder_transaction, 0, from, to);
739 int security_binder_transfer_binder(const struct cred *from,
740 const struct cred *to)
742 return call_int_hook(binder_transfer_binder, 0, from, to);
745 int security_binder_transfer_file(const struct cred *from,
746 const struct cred *to, struct file *file)
748 return call_int_hook(binder_transfer_file, 0, from, to, file);
751 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
753 return call_int_hook(ptrace_access_check, 0, child, mode);
756 int security_ptrace_traceme(struct task_struct *parent)
758 return call_int_hook(ptrace_traceme, 0, parent);
761 int security_capget(struct task_struct *target,
762 kernel_cap_t *effective,
763 kernel_cap_t *inheritable,
764 kernel_cap_t *permitted)
766 return call_int_hook(capget, 0, target,
767 effective, inheritable, permitted);
770 int security_capset(struct cred *new, const struct cred *old,
771 const kernel_cap_t *effective,
772 const kernel_cap_t *inheritable,
773 const kernel_cap_t *permitted)
775 return call_int_hook(capset, 0, new, old,
776 effective, inheritable, permitted);
779 int security_capable(const struct cred *cred,
780 struct user_namespace *ns,
784 return call_int_hook(capable, 0, cred, ns, cap, opts);
787 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
789 return call_int_hook(quotactl, 0, cmds, type, id, sb);
792 int security_quota_on(struct dentry *dentry)
794 return call_int_hook(quota_on, 0, dentry);
797 int security_syslog(int type)
799 return call_int_hook(syslog, 0, type);
802 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
804 return call_int_hook(settime, 0, ts, tz);
807 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
809 struct security_hook_list *hp;
810 int cap_sys_admin = 1;
814 * The module will respond with a positive value if
815 * it thinks the __vm_enough_memory() call should be
816 * made with the cap_sys_admin set. If all of the modules
817 * agree that it should be set it will. If any module
818 * thinks it should not be set it won't.
820 hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
821 rc = hp->hook.vm_enough_memory(mm, pages);
827 return __vm_enough_memory(mm, pages, cap_sys_admin);
830 int security_bprm_creds_for_exec(struct linux_binprm *bprm)
832 return call_int_hook(bprm_creds_for_exec, 0, bprm);
835 int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file)
837 return call_int_hook(bprm_creds_from_file, 0, bprm, file);
840 int security_bprm_check(struct linux_binprm *bprm)
844 ret = call_int_hook(bprm_check_security, 0, bprm);
847 return ima_bprm_check(bprm);
850 void security_bprm_committing_creds(struct linux_binprm *bprm)
852 call_void_hook(bprm_committing_creds, bprm);
855 void security_bprm_committed_creds(struct linux_binprm *bprm)
857 call_void_hook(bprm_committed_creds, bprm);
860 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc)
862 return call_int_hook(fs_context_dup, 0, fc, src_fc);
865 int security_fs_context_parse_param(struct fs_context *fc,
866 struct fs_parameter *param)
868 struct security_hook_list *hp;
872 hlist_for_each_entry(hp, &security_hook_heads.fs_context_parse_param,
874 trc = hp->hook.fs_context_parse_param(fc, param);
877 else if (trc != -ENOPARAM)
883 int security_sb_alloc(struct super_block *sb)
885 return call_int_hook(sb_alloc_security, 0, sb);
888 void security_sb_free(struct super_block *sb)
890 call_void_hook(sb_free_security, sb);
893 void security_free_mnt_opts(void **mnt_opts)
897 call_void_hook(sb_free_mnt_opts, *mnt_opts);
900 EXPORT_SYMBOL(security_free_mnt_opts);
902 int security_sb_eat_lsm_opts(char *options, void **mnt_opts)
904 return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts);
906 EXPORT_SYMBOL(security_sb_eat_lsm_opts);
908 int security_sb_remount(struct super_block *sb,
911 return call_int_hook(sb_remount, 0, sb, mnt_opts);
913 EXPORT_SYMBOL(security_sb_remount);
915 int security_sb_kern_mount(struct super_block *sb)
917 return call_int_hook(sb_kern_mount, 0, sb);
920 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
922 return call_int_hook(sb_show_options, 0, m, sb);
925 int security_sb_statfs(struct dentry *dentry)
927 return call_int_hook(sb_statfs, 0, dentry);
930 int security_sb_mount(const char *dev_name, const struct path *path,
931 const char *type, unsigned long flags, void *data)
933 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
936 int security_sb_umount(struct vfsmount *mnt, int flags)
938 return call_int_hook(sb_umount, 0, mnt, flags);
941 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
943 return call_int_hook(sb_pivotroot, 0, old_path, new_path);
946 int security_sb_set_mnt_opts(struct super_block *sb,
948 unsigned long kern_flags,
949 unsigned long *set_kern_flags)
951 return call_int_hook(sb_set_mnt_opts,
952 mnt_opts ? -EOPNOTSUPP : 0, sb,
953 mnt_opts, kern_flags, set_kern_flags);
955 EXPORT_SYMBOL(security_sb_set_mnt_opts);
957 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
958 struct super_block *newsb,
959 unsigned long kern_flags,
960 unsigned long *set_kern_flags)
962 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
963 kern_flags, set_kern_flags);
965 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
967 int security_add_mnt_opt(const char *option, const char *val, int len,
970 return call_int_hook(sb_add_mnt_opt, -EINVAL,
971 option, val, len, mnt_opts);
973 EXPORT_SYMBOL(security_add_mnt_opt);
975 int security_move_mount(const struct path *from_path, const struct path *to_path)
977 return call_int_hook(move_mount, 0, from_path, to_path);
980 int security_path_notify(const struct path *path, u64 mask,
981 unsigned int obj_type)
983 return call_int_hook(path_notify, 0, path, mask, obj_type);
986 int security_inode_alloc(struct inode *inode)
988 int rc = lsm_inode_alloc(inode);
992 rc = call_int_hook(inode_alloc_security, 0, inode);
994 security_inode_free(inode);
998 static void inode_free_by_rcu(struct rcu_head *head)
1001 * The rcu head is at the start of the inode blob
1003 kmem_cache_free(lsm_inode_cache, head);
1006 void security_inode_free(struct inode *inode)
1008 integrity_inode_free(inode);
1009 call_void_hook(inode_free_security, inode);
1011 * The inode may still be referenced in a path walk and
1012 * a call to security_inode_permission() can be made
1013 * after inode_free_security() is called. Ideally, the VFS
1014 * wouldn't do this, but fixing that is a much harder
1015 * job. For now, simply free the i_security via RCU, and
1016 * leave the current inode->i_security pointer intact.
1017 * The inode will be freed after the RCU grace period too.
1019 if (inode->i_security)
1020 call_rcu((struct rcu_head *)inode->i_security,
1024 int security_dentry_init_security(struct dentry *dentry, int mode,
1025 const struct qstr *name, void **ctx,
1028 return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
1031 EXPORT_SYMBOL(security_dentry_init_security);
1033 int security_dentry_create_files_as(struct dentry *dentry, int mode,
1035 const struct cred *old, struct cred *new)
1037 return call_int_hook(dentry_create_files_as, 0, dentry, mode,
1040 EXPORT_SYMBOL(security_dentry_create_files_as);
1042 int security_inode_init_security(struct inode *inode, struct inode *dir,
1043 const struct qstr *qstr,
1044 const initxattrs initxattrs, void *fs_data)
1046 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
1047 struct xattr *lsm_xattr, *evm_xattr, *xattr;
1050 if (unlikely(IS_PRIVATE(inode)))
1054 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
1055 dir, qstr, NULL, NULL, NULL);
1056 memset(new_xattrs, 0, sizeof(new_xattrs));
1057 lsm_xattr = new_xattrs;
1058 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
1061 &lsm_xattr->value_len);
1065 evm_xattr = lsm_xattr + 1;
1066 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
1069 ret = initxattrs(inode, new_xattrs, fs_data);
1071 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
1072 kfree(xattr->value);
1073 return (ret == -EOPNOTSUPP) ? 0 : ret;
1075 EXPORT_SYMBOL(security_inode_init_security);
1077 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
1078 const struct qstr *qstr, const char **name,
1079 void **value, size_t *len)
1081 if (unlikely(IS_PRIVATE(inode)))
1083 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
1084 qstr, name, value, len);
1086 EXPORT_SYMBOL(security_old_inode_init_security);
1088 #ifdef CONFIG_SECURITY_PATH
1089 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1092 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1094 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
1096 EXPORT_SYMBOL(security_path_mknod);
1098 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
1100 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1102 return call_int_hook(path_mkdir, 0, dir, dentry, mode);
1104 EXPORT_SYMBOL(security_path_mkdir);
1106 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1108 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1110 return call_int_hook(path_rmdir, 0, dir, dentry);
1113 int security_path_unlink(const struct path *dir, struct dentry *dentry)
1115 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1117 return call_int_hook(path_unlink, 0, dir, dentry);
1119 EXPORT_SYMBOL(security_path_unlink);
1121 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1122 const char *old_name)
1124 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1126 return call_int_hook(path_symlink, 0, dir, dentry, old_name);
1129 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1130 struct dentry *new_dentry)
1132 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1134 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
1137 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1138 const struct path *new_dir, struct dentry *new_dentry,
1141 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1142 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1145 if (flags & RENAME_EXCHANGE) {
1146 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
1147 old_dir, old_dentry);
1152 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
1155 EXPORT_SYMBOL(security_path_rename);
1157 int security_path_truncate(const struct path *path)
1159 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1161 return call_int_hook(path_truncate, 0, path);
1164 int security_path_chmod(const struct path *path, umode_t mode)
1166 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1168 return call_int_hook(path_chmod, 0, path, mode);
1171 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1173 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1175 return call_int_hook(path_chown, 0, path, uid, gid);
1178 int security_path_chroot(const struct path *path)
1180 return call_int_hook(path_chroot, 0, path);
1184 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
1186 if (unlikely(IS_PRIVATE(dir)))
1188 return call_int_hook(inode_create, 0, dir, dentry, mode);
1190 EXPORT_SYMBOL_GPL(security_inode_create);
1192 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1193 struct dentry *new_dentry)
1195 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1197 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
1200 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
1202 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1204 return call_int_hook(inode_unlink, 0, dir, dentry);
1207 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1208 const char *old_name)
1210 if (unlikely(IS_PRIVATE(dir)))
1212 return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
1215 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
1217 if (unlikely(IS_PRIVATE(dir)))
1219 return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
1221 EXPORT_SYMBOL_GPL(security_inode_mkdir);
1223 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
1225 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1227 return call_int_hook(inode_rmdir, 0, dir, dentry);
1230 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
1232 if (unlikely(IS_PRIVATE(dir)))
1234 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
1237 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1238 struct inode *new_dir, struct dentry *new_dentry,
1241 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1242 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1245 if (flags & RENAME_EXCHANGE) {
1246 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
1247 old_dir, old_dentry);
1252 return call_int_hook(inode_rename, 0, old_dir, old_dentry,
1253 new_dir, new_dentry);
1256 int security_inode_readlink(struct dentry *dentry)
1258 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1260 return call_int_hook(inode_readlink, 0, dentry);
1263 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
1266 if (unlikely(IS_PRIVATE(inode)))
1268 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
1271 int security_inode_permission(struct inode *inode, int mask)
1273 if (unlikely(IS_PRIVATE(inode)))
1275 return call_int_hook(inode_permission, 0, inode, mask);
1278 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
1282 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1284 ret = call_int_hook(inode_setattr, 0, dentry, attr);
1287 return evm_inode_setattr(dentry, attr);
1289 EXPORT_SYMBOL_GPL(security_inode_setattr);
1291 int security_inode_getattr(const struct path *path)
1293 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1295 return call_int_hook(inode_getattr, 0, path);
1298 int security_inode_setxattr(struct dentry *dentry, const char *name,
1299 const void *value, size_t size, int flags)
1303 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1306 * SELinux and Smack integrate the cap call,
1307 * so assume that all LSMs supplying this call do so.
1309 ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
1313 ret = cap_inode_setxattr(dentry, name, value, size, flags);
1316 ret = ima_inode_setxattr(dentry, name, value, size);
1319 return evm_inode_setxattr(dentry, name, value, size);
1322 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1323 const void *value, size_t size, int flags)
1325 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1327 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
1328 evm_inode_post_setxattr(dentry, name, value, size);
1331 int security_inode_getxattr(struct dentry *dentry, const char *name)
1333 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1335 return call_int_hook(inode_getxattr, 0, dentry, name);
1338 int security_inode_listxattr(struct dentry *dentry)
1340 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1342 return call_int_hook(inode_listxattr, 0, dentry);
1345 int security_inode_removexattr(struct dentry *dentry, const char *name)
1349 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1352 * SELinux and Smack integrate the cap call,
1353 * so assume that all LSMs supplying this call do so.
1355 ret = call_int_hook(inode_removexattr, 1, dentry, name);
1357 ret = cap_inode_removexattr(dentry, name);
1360 ret = ima_inode_removexattr(dentry, name);
1363 return evm_inode_removexattr(dentry, name);
1366 int security_inode_need_killpriv(struct dentry *dentry)
1368 return call_int_hook(inode_need_killpriv, 0, dentry);
1371 int security_inode_killpriv(struct dentry *dentry)
1373 return call_int_hook(inode_killpriv, 0, dentry);
1376 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
1378 struct security_hook_list *hp;
1381 if (unlikely(IS_PRIVATE(inode)))
1382 return LSM_RET_DEFAULT(inode_getsecurity);
1384 * Only one module will provide an attribute with a given name.
1386 hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
1387 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
1388 if (rc != LSM_RET_DEFAULT(inode_getsecurity))
1391 return LSM_RET_DEFAULT(inode_getsecurity);
1394 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
1396 struct security_hook_list *hp;
1399 if (unlikely(IS_PRIVATE(inode)))
1400 return LSM_RET_DEFAULT(inode_setsecurity);
1402 * Only one module will provide an attribute with a given name.
1404 hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
1405 rc = hp->hook.inode_setsecurity(inode, name, value, size,
1407 if (rc != LSM_RET_DEFAULT(inode_setsecurity))
1410 return LSM_RET_DEFAULT(inode_setsecurity);
1413 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
1415 if (unlikely(IS_PRIVATE(inode)))
1417 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
1419 EXPORT_SYMBOL(security_inode_listsecurity);
1421 void security_inode_getsecid(struct inode *inode, u32 *secid)
1423 call_void_hook(inode_getsecid, inode, secid);
1426 int security_inode_copy_up(struct dentry *src, struct cred **new)
1428 return call_int_hook(inode_copy_up, 0, src, new);
1430 EXPORT_SYMBOL(security_inode_copy_up);
1432 int security_inode_copy_up_xattr(const char *name)
1434 struct security_hook_list *hp;
1438 * The implementation can return 0 (accept the xattr), 1 (discard the
1439 * xattr), -EOPNOTSUPP if it does not know anything about the xattr or
1440 * any other error code incase of an error.
1442 hlist_for_each_entry(hp,
1443 &security_hook_heads.inode_copy_up_xattr, list) {
1444 rc = hp->hook.inode_copy_up_xattr(name);
1445 if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr))
1449 return LSM_RET_DEFAULT(inode_copy_up_xattr);
1451 EXPORT_SYMBOL(security_inode_copy_up_xattr);
1453 int security_kernfs_init_security(struct kernfs_node *kn_dir,
1454 struct kernfs_node *kn)
1456 return call_int_hook(kernfs_init_security, 0, kn_dir, kn);
1459 int security_file_permission(struct file *file, int mask)
1463 ret = call_int_hook(file_permission, 0, file, mask);
1467 return fsnotify_perm(file, mask);
1470 int security_file_alloc(struct file *file)
1472 int rc = lsm_file_alloc(file);
1476 rc = call_int_hook(file_alloc_security, 0, file);
1478 security_file_free(file);
1482 void security_file_free(struct file *file)
1486 call_void_hook(file_free_security, file);
1488 blob = file->f_security;
1490 file->f_security = NULL;
1491 kmem_cache_free(lsm_file_cache, blob);
1495 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1497 return call_int_hook(file_ioctl, 0, file, cmd, arg);
1499 EXPORT_SYMBOL_GPL(security_file_ioctl);
1502 * security_file_ioctl_compat() - Check if an ioctl is allowed in compat mode
1503 * @file: associated file
1505 * @arg: ioctl arguments
1507 * Compat version of security_file_ioctl() that correctly handles 32-bit
1508 * processes running on 64-bit kernels.
1510 * Return: Returns 0 if permission is granted.
1512 int security_file_ioctl_compat(struct file *file, unsigned int cmd,
1515 return call_int_hook(file_ioctl_compat, 0, file, cmd, arg);
1517 EXPORT_SYMBOL_GPL(security_file_ioctl_compat);
1519 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
1522 * Does we have PROT_READ and does the application expect
1523 * it to imply PROT_EXEC? If not, nothing to talk about...
1525 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
1527 if (!(current->personality & READ_IMPLIES_EXEC))
1530 * if that's an anonymous mapping, let it.
1533 return prot | PROT_EXEC;
1535 * ditto if it's not on noexec mount, except that on !MMU we need
1536 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1538 if (!path_noexec(&file->f_path)) {
1540 if (file->f_op->mmap_capabilities) {
1541 unsigned caps = file->f_op->mmap_capabilities(file);
1542 if (!(caps & NOMMU_MAP_EXEC))
1546 return prot | PROT_EXEC;
1548 /* anything on noexec mount won't get PROT_EXEC */
1552 int security_mmap_file(struct file *file, unsigned long prot,
1553 unsigned long flags)
1555 unsigned long prot_adj = mmap_prot(file, prot);
1558 ret = call_int_hook(mmap_file, 0, file, prot, prot_adj, flags);
1561 return ima_file_mmap(file, prot, prot_adj, flags);
1564 int security_mmap_addr(unsigned long addr)
1566 return call_int_hook(mmap_addr, 0, addr);
1569 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1574 ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot);
1577 return ima_file_mprotect(vma, prot);
1580 int security_file_lock(struct file *file, unsigned int cmd)
1582 return call_int_hook(file_lock, 0, file, cmd);
1585 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
1587 return call_int_hook(file_fcntl, 0, file, cmd, arg);
1590 void security_file_set_fowner(struct file *file)
1592 call_void_hook(file_set_fowner, file);
1595 int security_file_send_sigiotask(struct task_struct *tsk,
1596 struct fown_struct *fown, int sig)
1598 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
1601 int security_file_receive(struct file *file)
1603 return call_int_hook(file_receive, 0, file);
1606 int security_file_open(struct file *file)
1610 ret = call_int_hook(file_open, 0, file);
1614 return fsnotify_perm(file, MAY_OPEN);
1617 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
1619 int rc = lsm_task_alloc(task);
1623 rc = call_int_hook(task_alloc, 0, task, clone_flags);
1625 security_task_free(task);
1629 void security_task_free(struct task_struct *task)
1631 call_void_hook(task_free, task);
1633 kfree(task->security);
1634 task->security = NULL;
1637 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1639 int rc = lsm_cred_alloc(cred, gfp);
1644 rc = call_int_hook(cred_alloc_blank, 0, cred, gfp);
1646 security_cred_free(cred);
1650 void security_cred_free(struct cred *cred)
1653 * There is a failure case in prepare_creds() that
1654 * may result in a call here with ->security being NULL.
1656 if (unlikely(cred->security == NULL))
1659 call_void_hook(cred_free, cred);
1661 kfree(cred->security);
1662 cred->security = NULL;
1665 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1667 int rc = lsm_cred_alloc(new, gfp);
1672 rc = call_int_hook(cred_prepare, 0, new, old, gfp);
1674 security_cred_free(new);
1678 void security_transfer_creds(struct cred *new, const struct cred *old)
1680 call_void_hook(cred_transfer, new, old);
1683 void security_cred_getsecid(const struct cred *c, u32 *secid)
1686 call_void_hook(cred_getsecid, c, secid);
1688 EXPORT_SYMBOL(security_cred_getsecid);
1690 int security_kernel_act_as(struct cred *new, u32 secid)
1692 return call_int_hook(kernel_act_as, 0, new, secid);
1695 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1697 return call_int_hook(kernel_create_files_as, 0, new, inode);
1700 int security_kernel_module_request(char *kmod_name)
1704 ret = call_int_hook(kernel_module_request, 0, kmod_name);
1707 return integrity_kernel_module_request(kmod_name);
1710 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id,
1715 ret = call_int_hook(kernel_read_file, 0, file, id, contents);
1718 return ima_read_file(file, id, contents);
1720 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1722 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1723 enum kernel_read_file_id id)
1727 ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1730 return ima_post_read_file(file, buf, size, id);
1732 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1734 int security_kernel_load_data(enum kernel_load_data_id id, bool contents)
1738 ret = call_int_hook(kernel_load_data, 0, id, contents);
1741 return ima_load_data(id, contents);
1743 EXPORT_SYMBOL_GPL(security_kernel_load_data);
1745 int security_kernel_post_load_data(char *buf, loff_t size,
1746 enum kernel_load_data_id id,
1751 ret = call_int_hook(kernel_post_load_data, 0, buf, size, id,
1755 return ima_post_load_data(buf, size, id, description);
1757 EXPORT_SYMBOL_GPL(security_kernel_post_load_data);
1759 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1762 return call_int_hook(task_fix_setuid, 0, new, old, flags);
1765 int security_task_fix_setgid(struct cred *new, const struct cred *old,
1768 return call_int_hook(task_fix_setgid, 0, new, old, flags);
1771 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1773 return call_int_hook(task_setpgid, 0, p, pgid);
1776 int security_task_getpgid(struct task_struct *p)
1778 return call_int_hook(task_getpgid, 0, p);
1781 int security_task_getsid(struct task_struct *p)
1783 return call_int_hook(task_getsid, 0, p);
1786 void security_task_getsecid(struct task_struct *p, u32 *secid)
1789 call_void_hook(task_getsecid, p, secid);
1791 EXPORT_SYMBOL(security_task_getsecid);
1793 int security_task_setnice(struct task_struct *p, int nice)
1795 return call_int_hook(task_setnice, 0, p, nice);
1798 int security_task_setioprio(struct task_struct *p, int ioprio)
1800 return call_int_hook(task_setioprio, 0, p, ioprio);
1803 int security_task_getioprio(struct task_struct *p)
1805 return call_int_hook(task_getioprio, 0, p);
1808 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1811 return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1814 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1815 struct rlimit *new_rlim)
1817 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1820 int security_task_setscheduler(struct task_struct *p)
1822 return call_int_hook(task_setscheduler, 0, p);
1825 int security_task_getscheduler(struct task_struct *p)
1827 return call_int_hook(task_getscheduler, 0, p);
1830 int security_task_movememory(struct task_struct *p)
1832 return call_int_hook(task_movememory, 0, p);
1835 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
1836 int sig, const struct cred *cred)
1838 return call_int_hook(task_kill, 0, p, info, sig, cred);
1841 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1842 unsigned long arg4, unsigned long arg5)
1845 int rc = LSM_RET_DEFAULT(task_prctl);
1846 struct security_hook_list *hp;
1848 hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1849 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1850 if (thisrc != LSM_RET_DEFAULT(task_prctl)) {
1859 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1861 call_void_hook(task_to_inode, p, inode);
1864 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1866 return call_int_hook(ipc_permission, 0, ipcp, flag);
1869 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1872 call_void_hook(ipc_getsecid, ipcp, secid);
1875 int security_msg_msg_alloc(struct msg_msg *msg)
1877 int rc = lsm_msg_msg_alloc(msg);
1881 rc = call_int_hook(msg_msg_alloc_security, 0, msg);
1883 security_msg_msg_free(msg);
1887 void security_msg_msg_free(struct msg_msg *msg)
1889 call_void_hook(msg_msg_free_security, msg);
1890 kfree(msg->security);
1891 msg->security = NULL;
1894 int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1896 int rc = lsm_ipc_alloc(msq);
1900 rc = call_int_hook(msg_queue_alloc_security, 0, msq);
1902 security_msg_queue_free(msq);
1906 void security_msg_queue_free(struct kern_ipc_perm *msq)
1908 call_void_hook(msg_queue_free_security, msq);
1909 kfree(msq->security);
1910 msq->security = NULL;
1913 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1915 return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1918 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1920 return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1923 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1924 struct msg_msg *msg, int msqflg)
1926 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1929 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1930 struct task_struct *target, long type, int mode)
1932 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1935 int security_shm_alloc(struct kern_ipc_perm *shp)
1937 int rc = lsm_ipc_alloc(shp);
1941 rc = call_int_hook(shm_alloc_security, 0, shp);
1943 security_shm_free(shp);
1947 void security_shm_free(struct kern_ipc_perm *shp)
1949 call_void_hook(shm_free_security, shp);
1950 kfree(shp->security);
1951 shp->security = NULL;
1954 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
1956 return call_int_hook(shm_associate, 0, shp, shmflg);
1959 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1961 return call_int_hook(shm_shmctl, 0, shp, cmd);
1964 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
1966 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1969 int security_sem_alloc(struct kern_ipc_perm *sma)
1971 int rc = lsm_ipc_alloc(sma);
1975 rc = call_int_hook(sem_alloc_security, 0, sma);
1977 security_sem_free(sma);
1981 void security_sem_free(struct kern_ipc_perm *sma)
1983 call_void_hook(sem_free_security, sma);
1984 kfree(sma->security);
1985 sma->security = NULL;
1988 int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1990 return call_int_hook(sem_associate, 0, sma, semflg);
1993 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1995 return call_int_hook(sem_semctl, 0, sma, cmd);
1998 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
1999 unsigned nsops, int alter)
2001 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
2004 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
2006 if (unlikely(inode && IS_PRIVATE(inode)))
2008 call_void_hook(d_instantiate, dentry, inode);
2010 EXPORT_SYMBOL(security_d_instantiate);
2012 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
2015 struct security_hook_list *hp;
2017 hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) {
2018 if (lsm != NULL && strcmp(lsm, hp->lsm))
2020 return hp->hook.getprocattr(p, name, value);
2022 return LSM_RET_DEFAULT(getprocattr);
2025 int security_setprocattr(const char *lsm, const char *name, void *value,
2028 struct security_hook_list *hp;
2030 hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) {
2031 if (lsm != NULL && strcmp(lsm, hp->lsm))
2033 return hp->hook.setprocattr(name, value, size);
2035 return LSM_RET_DEFAULT(setprocattr);
2038 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
2040 return call_int_hook(netlink_send, 0, sk, skb);
2043 int security_ismaclabel(const char *name)
2045 return call_int_hook(ismaclabel, 0, name);
2047 EXPORT_SYMBOL(security_ismaclabel);
2049 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
2051 struct security_hook_list *hp;
2055 * Currently, only one LSM can implement secid_to_secctx (i.e this
2056 * LSM hook is not "stackable").
2058 hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) {
2059 rc = hp->hook.secid_to_secctx(secid, secdata, seclen);
2060 if (rc != LSM_RET_DEFAULT(secid_to_secctx))
2064 return LSM_RET_DEFAULT(secid_to_secctx);
2066 EXPORT_SYMBOL(security_secid_to_secctx);
2068 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
2071 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
2073 EXPORT_SYMBOL(security_secctx_to_secid);
2075 void security_release_secctx(char *secdata, u32 seclen)
2077 call_void_hook(release_secctx, secdata, seclen);
2079 EXPORT_SYMBOL(security_release_secctx);
2081 void security_inode_invalidate_secctx(struct inode *inode)
2083 call_void_hook(inode_invalidate_secctx, inode);
2085 EXPORT_SYMBOL(security_inode_invalidate_secctx);
2087 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
2089 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
2091 EXPORT_SYMBOL(security_inode_notifysecctx);
2093 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
2095 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
2097 EXPORT_SYMBOL(security_inode_setsecctx);
2099 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
2101 struct security_hook_list *hp;
2105 * Only one module will provide a security context.
2107 hlist_for_each_entry(hp, &security_hook_heads.inode_getsecctx, list) {
2108 rc = hp->hook.inode_getsecctx(inode, ctx, ctxlen);
2109 if (rc != LSM_RET_DEFAULT(inode_getsecctx))
2113 return LSM_RET_DEFAULT(inode_getsecctx);
2115 EXPORT_SYMBOL(security_inode_getsecctx);
2117 #ifdef CONFIG_WATCH_QUEUE
2118 int security_post_notification(const struct cred *w_cred,
2119 const struct cred *cred,
2120 struct watch_notification *n)
2122 return call_int_hook(post_notification, 0, w_cred, cred, n);
2124 #endif /* CONFIG_WATCH_QUEUE */
2126 #ifdef CONFIG_KEY_NOTIFICATIONS
2127 int security_watch_key(struct key *key)
2129 return call_int_hook(watch_key, 0, key);
2133 #ifdef CONFIG_SECURITY_NETWORK
2135 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
2137 return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
2139 EXPORT_SYMBOL(security_unix_stream_connect);
2141 int security_unix_may_send(struct socket *sock, struct socket *other)
2143 return call_int_hook(unix_may_send, 0, sock, other);
2145 EXPORT_SYMBOL(security_unix_may_send);
2147 int security_socket_create(int family, int type, int protocol, int kern)
2149 return call_int_hook(socket_create, 0, family, type, protocol, kern);
2152 int security_socket_post_create(struct socket *sock, int family,
2153 int type, int protocol, int kern)
2155 return call_int_hook(socket_post_create, 0, sock, family, type,
2159 int security_socket_socketpair(struct socket *socka, struct socket *sockb)
2161 return call_int_hook(socket_socketpair, 0, socka, sockb);
2163 EXPORT_SYMBOL(security_socket_socketpair);
2165 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
2167 return call_int_hook(socket_bind, 0, sock, address, addrlen);
2170 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
2172 return call_int_hook(socket_connect, 0, sock, address, addrlen);
2175 int security_socket_listen(struct socket *sock, int backlog)
2177 return call_int_hook(socket_listen, 0, sock, backlog);
2180 int security_socket_accept(struct socket *sock, struct socket *newsock)
2182 return call_int_hook(socket_accept, 0, sock, newsock);
2185 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
2187 return call_int_hook(socket_sendmsg, 0, sock, msg, size);
2190 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
2191 int size, int flags)
2193 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
2196 int security_socket_getsockname(struct socket *sock)
2198 return call_int_hook(socket_getsockname, 0, sock);
2201 int security_socket_getpeername(struct socket *sock)
2203 return call_int_hook(socket_getpeername, 0, sock);
2206 int security_socket_getsockopt(struct socket *sock, int level, int optname)
2208 return call_int_hook(socket_getsockopt, 0, sock, level, optname);
2211 int security_socket_setsockopt(struct socket *sock, int level, int optname)
2213 return call_int_hook(socket_setsockopt, 0, sock, level, optname);
2216 int security_socket_shutdown(struct socket *sock, int how)
2218 return call_int_hook(socket_shutdown, 0, sock, how);
2221 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
2223 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
2225 EXPORT_SYMBOL(security_sock_rcv_skb);
2227 int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval,
2228 sockptr_t optlen, unsigned int len)
2230 struct security_hook_list *hp;
2234 * Only one module will provide a security context.
2236 hlist_for_each_entry(hp, &security_hook_heads.socket_getpeersec_stream,
2238 rc = hp->hook.socket_getpeersec_stream(sock, optval, optlen,
2240 if (rc != LSM_RET_DEFAULT(socket_getpeersec_stream))
2243 return LSM_RET_DEFAULT(socket_getpeersec_stream);
2246 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2248 struct security_hook_list *hp;
2252 * Only one module will provide a security context.
2254 hlist_for_each_entry(hp, &security_hook_heads.socket_getpeersec_dgram,
2256 rc = hp->hook.socket_getpeersec_dgram(sock, skb, secid);
2257 if (rc != LSM_RET_DEFAULT(socket_getpeersec_dgram))
2260 return LSM_RET_DEFAULT(socket_getpeersec_dgram);
2262 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
2264 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2266 return call_int_hook(sk_alloc_security, 0, sk, family, priority);
2269 void security_sk_free(struct sock *sk)
2271 call_void_hook(sk_free_security, sk);
2274 void security_sk_clone(const struct sock *sk, struct sock *newsk)
2276 call_void_hook(sk_clone_security, sk, newsk);
2278 EXPORT_SYMBOL(security_sk_clone);
2280 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic)
2282 call_void_hook(sk_getsecid, sk, &flic->flowic_secid);
2284 EXPORT_SYMBOL(security_sk_classify_flow);
2286 void security_req_classify_flow(const struct request_sock *req,
2287 struct flowi_common *flic)
2289 call_void_hook(req_classify_flow, req, flic);
2291 EXPORT_SYMBOL(security_req_classify_flow);
2293 void security_sock_graft(struct sock *sk, struct socket *parent)
2295 call_void_hook(sock_graft, sk, parent);
2297 EXPORT_SYMBOL(security_sock_graft);
2299 int security_inet_conn_request(struct sock *sk,
2300 struct sk_buff *skb, struct request_sock *req)
2302 return call_int_hook(inet_conn_request, 0, sk, skb, req);
2304 EXPORT_SYMBOL(security_inet_conn_request);
2306 void security_inet_csk_clone(struct sock *newsk,
2307 const struct request_sock *req)
2309 call_void_hook(inet_csk_clone, newsk, req);
2312 void security_inet_conn_established(struct sock *sk,
2313 struct sk_buff *skb)
2315 call_void_hook(inet_conn_established, sk, skb);
2317 EXPORT_SYMBOL(security_inet_conn_established);
2319 int security_secmark_relabel_packet(u32 secid)
2321 return call_int_hook(secmark_relabel_packet, 0, secid);
2323 EXPORT_SYMBOL(security_secmark_relabel_packet);
2325 void security_secmark_refcount_inc(void)
2327 call_void_hook(secmark_refcount_inc);
2329 EXPORT_SYMBOL(security_secmark_refcount_inc);
2331 void security_secmark_refcount_dec(void)
2333 call_void_hook(secmark_refcount_dec);
2335 EXPORT_SYMBOL(security_secmark_refcount_dec);
2337 int security_tun_dev_alloc_security(void **security)
2339 return call_int_hook(tun_dev_alloc_security, 0, security);
2341 EXPORT_SYMBOL(security_tun_dev_alloc_security);
2343 void security_tun_dev_free_security(void *security)
2345 call_void_hook(tun_dev_free_security, security);
2347 EXPORT_SYMBOL(security_tun_dev_free_security);
2349 int security_tun_dev_create(void)
2351 return call_int_hook(tun_dev_create, 0);
2353 EXPORT_SYMBOL(security_tun_dev_create);
2355 int security_tun_dev_attach_queue(void *security)
2357 return call_int_hook(tun_dev_attach_queue, 0, security);
2359 EXPORT_SYMBOL(security_tun_dev_attach_queue);
2361 int security_tun_dev_attach(struct sock *sk, void *security)
2363 return call_int_hook(tun_dev_attach, 0, sk, security);
2365 EXPORT_SYMBOL(security_tun_dev_attach);
2367 int security_tun_dev_open(void *security)
2369 return call_int_hook(tun_dev_open, 0, security);
2371 EXPORT_SYMBOL(security_tun_dev_open);
2373 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb)
2375 return call_int_hook(sctp_assoc_request, 0, ep, skb);
2377 EXPORT_SYMBOL(security_sctp_assoc_request);
2379 int security_sctp_bind_connect(struct sock *sk, int optname,
2380 struct sockaddr *address, int addrlen)
2382 return call_int_hook(sctp_bind_connect, 0, sk, optname,
2385 EXPORT_SYMBOL(security_sctp_bind_connect);
2387 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
2390 call_void_hook(sctp_sk_clone, ep, sk, newsk);
2392 EXPORT_SYMBOL(security_sctp_sk_clone);
2394 #endif /* CONFIG_SECURITY_NETWORK */
2396 #ifdef CONFIG_SECURITY_INFINIBAND
2398 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
2400 return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
2402 EXPORT_SYMBOL(security_ib_pkey_access);
2404 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
2406 return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
2408 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
2410 int security_ib_alloc_security(void **sec)
2412 return call_int_hook(ib_alloc_security, 0, sec);
2414 EXPORT_SYMBOL(security_ib_alloc_security);
2416 void security_ib_free_security(void *sec)
2418 call_void_hook(ib_free_security, sec);
2420 EXPORT_SYMBOL(security_ib_free_security);
2421 #endif /* CONFIG_SECURITY_INFINIBAND */
2423 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2425 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2426 struct xfrm_user_sec_ctx *sec_ctx,
2429 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
2431 EXPORT_SYMBOL(security_xfrm_policy_alloc);
2433 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
2434 struct xfrm_sec_ctx **new_ctxp)
2436 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
2439 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2441 call_void_hook(xfrm_policy_free_security, ctx);
2443 EXPORT_SYMBOL(security_xfrm_policy_free);
2445 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2447 return call_int_hook(xfrm_policy_delete_security, 0, ctx);
2450 int security_xfrm_state_alloc(struct xfrm_state *x,
2451 struct xfrm_user_sec_ctx *sec_ctx)
2453 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
2455 EXPORT_SYMBOL(security_xfrm_state_alloc);
2457 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2458 struct xfrm_sec_ctx *polsec, u32 secid)
2460 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
2463 int security_xfrm_state_delete(struct xfrm_state *x)
2465 return call_int_hook(xfrm_state_delete_security, 0, x);
2467 EXPORT_SYMBOL(security_xfrm_state_delete);
2469 void security_xfrm_state_free(struct xfrm_state *x)
2471 call_void_hook(xfrm_state_free_security, x);
2474 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2476 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
2479 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2480 struct xfrm_policy *xp,
2481 const struct flowi_common *flic)
2483 struct security_hook_list *hp;
2484 int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match);
2487 * Since this function is expected to return 0 or 1, the judgment
2488 * becomes difficult if multiple LSMs supply this call. Fortunately,
2489 * we can use the first LSM's judgment because currently only SELinux
2490 * supplies this call.
2492 * For speed optimization, we explicitly break the loop rather than
2495 hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
2497 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic);
2503 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2505 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
2508 void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic)
2510 int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid,
2515 EXPORT_SYMBOL(security_skb_classify_flow);
2517 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2521 int security_key_alloc(struct key *key, const struct cred *cred,
2522 unsigned long flags)
2524 return call_int_hook(key_alloc, 0, key, cred, flags);
2527 void security_key_free(struct key *key)
2529 call_void_hook(key_free, key);
2532 int security_key_permission(key_ref_t key_ref, const struct cred *cred,
2533 enum key_need_perm need_perm)
2535 return call_int_hook(key_permission, 0, key_ref, cred, need_perm);
2538 int security_key_getsecurity(struct key *key, char **_buffer)
2541 return call_int_hook(key_getsecurity, 0, key, _buffer);
2544 #endif /* CONFIG_KEYS */
2548 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
2550 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
2553 int security_audit_rule_known(struct audit_krule *krule)
2555 return call_int_hook(audit_rule_known, 0, krule);
2558 void security_audit_rule_free(void *lsmrule)
2560 call_void_hook(audit_rule_free, lsmrule);
2563 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule)
2565 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule);
2567 #endif /* CONFIG_AUDIT */
2569 #ifdef CONFIG_BPF_SYSCALL
2570 int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
2572 return call_int_hook(bpf, 0, cmd, attr, size);
2574 int security_bpf_map(struct bpf_map *map, fmode_t fmode)
2576 return call_int_hook(bpf_map, 0, map, fmode);
2578 int security_bpf_prog(struct bpf_prog *prog)
2580 return call_int_hook(bpf_prog, 0, prog);
2582 int security_bpf_map_alloc(struct bpf_map *map)
2584 return call_int_hook(bpf_map_alloc_security, 0, map);
2586 int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
2588 return call_int_hook(bpf_prog_alloc_security, 0, aux);
2590 void security_bpf_map_free(struct bpf_map *map)
2592 call_void_hook(bpf_map_free_security, map);
2594 void security_bpf_prog_free(struct bpf_prog_aux *aux)
2596 call_void_hook(bpf_prog_free_security, aux);
2598 #endif /* CONFIG_BPF_SYSCALL */
2600 int security_locked_down(enum lockdown_reason what)
2602 return call_int_hook(locked_down, 0, what);
2604 EXPORT_SYMBOL(security_locked_down);
2606 #ifdef CONFIG_PERF_EVENTS
2607 int security_perf_event_open(struct perf_event_attr *attr, int type)
2609 return call_int_hook(perf_event_open, 0, attr, type);
2612 int security_perf_event_alloc(struct perf_event *event)
2614 return call_int_hook(perf_event_alloc, 0, event);
2617 void security_perf_event_free(struct perf_event *event)
2619 call_void_hook(perf_event_free, event);
2622 int security_perf_event_read(struct perf_event *event)
2624 return call_int_hook(perf_event_read, 0, event);
2627 int security_perf_event_write(struct perf_event *event)
2629 return call_int_hook(perf_event_write, 0, event);
2631 #endif /* CONFIG_PERF_EVENTS */