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/lsm_hooks.h>
20 #include <linux/integrity.h>
21 #include <linux/ima.h>
22 #include <linux/evm.h>
23 #include <linux/fsnotify.h>
24 #include <linux/mman.h>
25 #include <linux/mount.h>
26 #include <linux/personality.h>
27 #include <linux/backing-dev.h>
28 #include <linux/string.h>
29 #include <linux/msg.h>
32 #define MAX_LSM_EVM_XATTR 2
34 /* How many LSMs were built into the kernel? */
35 #define LSM_COUNT (__end_lsm_info - __start_lsm_info)
37 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
38 static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain);
40 static struct kmem_cache *lsm_file_cache;
41 static struct kmem_cache *lsm_inode_cache;
44 static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init;
46 /* Boot-time LSM user choice */
47 static __initdata const char *chosen_lsm_order;
48 static __initdata const char *chosen_major_lsm;
50 static __initconst const char * const builtin_lsm_order = CONFIG_LSM;
52 /* Ordered list of LSMs to initialize. */
53 static __initdata struct lsm_info **ordered_lsms;
54 static __initdata struct lsm_info *exclusive;
56 static __initdata bool debug;
57 #define init_debug(...) \
60 pr_info(__VA_ARGS__); \
63 static bool __init is_enabled(struct lsm_info *lsm)
71 /* Mark an LSM's enabled flag. */
72 static int lsm_enabled_true __initdata = 1;
73 static int lsm_enabled_false __initdata = 0;
74 static void __init set_enabled(struct lsm_info *lsm, bool enabled)
77 * When an LSM hasn't configured an enable variable, we can use
78 * a hard-coded location for storing the default enabled state.
82 lsm->enabled = &lsm_enabled_true;
84 lsm->enabled = &lsm_enabled_false;
85 } else if (lsm->enabled == &lsm_enabled_true) {
87 lsm->enabled = &lsm_enabled_false;
88 } else if (lsm->enabled == &lsm_enabled_false) {
90 lsm->enabled = &lsm_enabled_true;
92 *lsm->enabled = enabled;
96 /* Is an LSM already listed in the ordered LSMs list? */
97 static bool __init exists_ordered_lsm(struct lsm_info *lsm)
99 struct lsm_info **check;
101 for (check = ordered_lsms; *check; check++)
108 /* Append an LSM to the list of ordered LSMs to initialize. */
109 static int last_lsm __initdata;
110 static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from)
112 /* Ignore duplicate selections. */
113 if (exists_ordered_lsm(lsm))
116 if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from))
119 /* Enable this LSM, if it is not already set. */
121 lsm->enabled = &lsm_enabled_true;
122 ordered_lsms[last_lsm++] = lsm;
124 init_debug("%s ordering: %s (%sabled)\n", from, lsm->name,
125 is_enabled(lsm) ? "en" : "dis");
128 /* Is an LSM allowed to be initialized? */
129 static bool __init lsm_allowed(struct lsm_info *lsm)
131 /* Skip if the LSM is disabled. */
132 if (!is_enabled(lsm))
135 /* Not allowed if another exclusive LSM already initialized. */
136 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) {
137 init_debug("exclusive disabled: %s\n", lsm->name);
144 static void __init lsm_set_blob_size(int *need, int *lbs)
155 static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed)
160 lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred);
161 lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file);
163 * The inode blob gets an rcu_head in addition to
164 * what the modules might need.
166 if (needed->lbs_inode && blob_sizes.lbs_inode == 0)
167 blob_sizes.lbs_inode = sizeof(struct rcu_head);
168 lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode);
169 lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc);
170 lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg);
171 lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task);
174 /* Prepare LSM for initialization. */
175 static void __init prepare_lsm(struct lsm_info *lsm)
177 int enabled = lsm_allowed(lsm);
179 /* Record enablement (to handle any following exclusive LSMs). */
180 set_enabled(lsm, enabled);
182 /* If enabled, do pre-initialization work. */
184 if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) {
186 init_debug("exclusive chosen: %s\n", lsm->name);
189 lsm_set_blob_sizes(lsm->blobs);
193 /* Initialize a given LSM, if it is enabled. */
194 static void __init initialize_lsm(struct lsm_info *lsm)
196 if (is_enabled(lsm)) {
199 init_debug("initializing %s\n", lsm->name);
201 WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret);
205 /* Populate ordered LSMs list from comma-separated LSM name list. */
206 static void __init ordered_lsm_parse(const char *order, const char *origin)
208 struct lsm_info *lsm;
209 char *sep, *name, *next;
211 /* LSM_ORDER_FIRST is always first. */
212 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
213 if (lsm->order == LSM_ORDER_FIRST)
214 append_ordered_lsm(lsm, "first");
217 /* Process "security=", if given. */
218 if (chosen_major_lsm) {
219 struct lsm_info *major;
222 * To match the original "security=" behavior, this
223 * explicitly does NOT fallback to another Legacy Major
224 * if the selected one was separately disabled: disable
225 * all non-matching Legacy Major LSMs.
227 for (major = __start_lsm_info; major < __end_lsm_info;
229 if ((major->flags & LSM_FLAG_LEGACY_MAJOR) &&
230 strcmp(major->name, chosen_major_lsm) != 0) {
231 set_enabled(major, false);
232 init_debug("security=%s disabled: %s\n",
233 chosen_major_lsm, major->name);
238 sep = kstrdup(order, GFP_KERNEL);
240 /* Walk the list, looking for matching LSMs. */
241 while ((name = strsep(&next, ",")) != NULL) {
244 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
245 if (lsm->order == LSM_ORDER_MUTABLE &&
246 strcmp(lsm->name, name) == 0) {
247 append_ordered_lsm(lsm, origin);
253 init_debug("%s ignored: %s\n", origin, name);
256 /* Process "security=", if given. */
257 if (chosen_major_lsm) {
258 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
259 if (exists_ordered_lsm(lsm))
261 if (strcmp(lsm->name, chosen_major_lsm) == 0)
262 append_ordered_lsm(lsm, "security=");
266 /* Disable all LSMs not in the ordered list. */
267 for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
268 if (exists_ordered_lsm(lsm))
270 set_enabled(lsm, false);
271 init_debug("%s disabled: %s\n", origin, lsm->name);
277 static void __init lsm_early_cred(struct cred *cred);
278 static void __init lsm_early_task(struct task_struct *task);
280 static void __init ordered_lsm_init(void)
282 struct lsm_info **lsm;
284 ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms),
287 if (chosen_lsm_order) {
288 if (chosen_major_lsm) {
289 pr_info("security= is ignored because it is superseded by lsm=\n");
290 chosen_major_lsm = NULL;
292 ordered_lsm_parse(chosen_lsm_order, "cmdline");
294 ordered_lsm_parse(builtin_lsm_order, "builtin");
296 for (lsm = ordered_lsms; *lsm; lsm++)
299 init_debug("cred blob size = %d\n", blob_sizes.lbs_cred);
300 init_debug("file blob size = %d\n", blob_sizes.lbs_file);
301 init_debug("inode blob size = %d\n", blob_sizes.lbs_inode);
302 init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc);
303 init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg);
304 init_debug("task blob size = %d\n", blob_sizes.lbs_task);
307 * Create any kmem_caches needed for blobs
309 if (blob_sizes.lbs_file)
310 lsm_file_cache = kmem_cache_create("lsm_file_cache",
311 blob_sizes.lbs_file, 0,
313 if (blob_sizes.lbs_inode)
314 lsm_inode_cache = kmem_cache_create("lsm_inode_cache",
315 blob_sizes.lbs_inode, 0,
318 lsm_early_cred((struct cred *) current->cred);
319 lsm_early_task(current);
320 for (lsm = ordered_lsms; *lsm; lsm++)
321 initialize_lsm(*lsm);
327 * security_init - initializes the security framework
329 * This should be called early in the kernel initialization sequence.
331 int __init security_init(void)
334 struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
336 pr_info("Security Framework initializing\n");
338 for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
340 INIT_HLIST_HEAD(&list[i]);
342 /* Load LSMs in specified order. */
348 /* Save user chosen LSM */
349 static int __init choose_major_lsm(char *str)
351 chosen_major_lsm = str;
354 __setup("security=", choose_major_lsm);
356 /* Explicitly choose LSM initialization order. */
357 static int __init choose_lsm_order(char *str)
359 chosen_lsm_order = str;
362 __setup("lsm=", choose_lsm_order);
364 /* Enable LSM order debugging. */
365 static int __init enable_debug(char *str)
370 __setup("lsm.debug", enable_debug);
372 static bool match_last_lsm(const char *list, const char *lsm)
376 if (WARN_ON(!list || !lsm))
378 last = strrchr(list, ',');
380 /* Pass the comma, strcmp() will check for '\0' */
384 return !strcmp(last, lsm);
387 static int lsm_append(char *new, char **result)
391 if (*result == NULL) {
392 *result = kstrdup(new, GFP_KERNEL);
396 /* Check if it is the last registered name */
397 if (match_last_lsm(*result, new))
399 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
409 * security_add_hooks - Add a modules hooks to the hook lists.
410 * @hooks: the hooks to add
411 * @count: the number of hooks to add
412 * @lsm: the name of the security module
414 * Each LSM has to register its hooks with the infrastructure.
416 void __init security_add_hooks(struct security_hook_list *hooks, int count,
421 for (i = 0; i < count; i++) {
423 hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
425 if (lsm_append(lsm, &lsm_names) < 0)
426 panic("%s - Cannot get early memory.\n", __func__);
429 int call_lsm_notifier(enum lsm_event event, void *data)
431 return atomic_notifier_call_chain(&lsm_notifier_chain, event, data);
433 EXPORT_SYMBOL(call_lsm_notifier);
435 int register_lsm_notifier(struct notifier_block *nb)
437 return atomic_notifier_chain_register(&lsm_notifier_chain, nb);
439 EXPORT_SYMBOL(register_lsm_notifier);
441 int unregister_lsm_notifier(struct notifier_block *nb)
443 return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb);
445 EXPORT_SYMBOL(unregister_lsm_notifier);
448 * lsm_cred_alloc - allocate a composite cred blob
449 * @cred: the cred that needs a blob
450 * @gfp: allocation type
452 * Allocate the cred blob for all the modules
454 * Returns 0, or -ENOMEM if memory can't be allocated.
456 static int lsm_cred_alloc(struct cred *cred, gfp_t gfp)
458 if (blob_sizes.lbs_cred == 0) {
459 cred->security = NULL;
463 cred->security = kzalloc(blob_sizes.lbs_cred, gfp);
464 if (cred->security == NULL)
470 * lsm_early_cred - during initialization allocate a composite cred blob
471 * @cred: the cred that needs a blob
473 * Allocate the cred blob for all the modules
475 static void __init lsm_early_cred(struct cred *cred)
477 int rc = lsm_cred_alloc(cred, GFP_KERNEL);
480 panic("%s: Early cred alloc failed.\n", __func__);
484 * lsm_file_alloc - allocate a composite file blob
485 * @file: the file that needs a blob
487 * Allocate the file blob for all the modules
489 * Returns 0, or -ENOMEM if memory can't be allocated.
491 static int lsm_file_alloc(struct file *file)
493 if (!lsm_file_cache) {
494 file->f_security = NULL;
498 file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL);
499 if (file->f_security == NULL)
505 * lsm_inode_alloc - allocate a composite inode blob
506 * @inode: the inode that needs a blob
508 * Allocate the inode blob for all the modules
510 * Returns 0, or -ENOMEM if memory can't be allocated.
512 int lsm_inode_alloc(struct inode *inode)
514 if (!lsm_inode_cache) {
515 inode->i_security = NULL;
519 inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS);
520 if (inode->i_security == NULL)
526 * lsm_task_alloc - allocate a composite task blob
527 * @task: the task that needs a blob
529 * Allocate the task blob for all the modules
531 * Returns 0, or -ENOMEM if memory can't be allocated.
533 static int lsm_task_alloc(struct task_struct *task)
535 if (blob_sizes.lbs_task == 0) {
536 task->security = NULL;
540 task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL);
541 if (task->security == NULL)
547 * lsm_ipc_alloc - allocate a composite ipc blob
548 * @kip: the ipc that needs a blob
550 * Allocate the ipc blob for all the modules
552 * Returns 0, or -ENOMEM if memory can't be allocated.
554 static int lsm_ipc_alloc(struct kern_ipc_perm *kip)
556 if (blob_sizes.lbs_ipc == 0) {
557 kip->security = NULL;
561 kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL);
562 if (kip->security == NULL)
568 * lsm_msg_msg_alloc - allocate a composite msg_msg blob
569 * @mp: the msg_msg that needs a blob
571 * Allocate the ipc blob for all the modules
573 * Returns 0, or -ENOMEM if memory can't be allocated.
575 static int lsm_msg_msg_alloc(struct msg_msg *mp)
577 if (blob_sizes.lbs_msg_msg == 0) {
582 mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL);
583 if (mp->security == NULL)
589 * lsm_early_task - during initialization allocate a composite task blob
590 * @task: the task that needs a blob
592 * Allocate the task blob for all the modules
594 static void __init lsm_early_task(struct task_struct *task)
596 int rc = lsm_task_alloc(task);
599 panic("%s: Early task alloc failed.\n", __func__);
603 * Hook list operation macros.
606 * This is a hook that does not return a value.
609 * This is a hook that returns a value.
612 #define call_void_hook(FUNC, ...) \
614 struct security_hook_list *P; \
616 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
617 P->hook.FUNC(__VA_ARGS__); \
620 #define call_int_hook(FUNC, IRC, ...) ({ \
623 struct security_hook_list *P; \
625 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
626 RC = P->hook.FUNC(__VA_ARGS__); \
634 /* Security operations */
636 int security_binder_set_context_mgr(struct task_struct *mgr)
638 return call_int_hook(binder_set_context_mgr, 0, mgr);
641 int security_binder_transaction(struct task_struct *from,
642 struct task_struct *to)
644 return call_int_hook(binder_transaction, 0, from, to);
647 int security_binder_transfer_binder(struct task_struct *from,
648 struct task_struct *to)
650 return call_int_hook(binder_transfer_binder, 0, from, to);
653 int security_binder_transfer_file(struct task_struct *from,
654 struct task_struct *to, struct file *file)
656 return call_int_hook(binder_transfer_file, 0, from, to, file);
659 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
661 return call_int_hook(ptrace_access_check, 0, child, mode);
664 int security_ptrace_traceme(struct task_struct *parent)
666 return call_int_hook(ptrace_traceme, 0, parent);
669 int security_capget(struct task_struct *target,
670 kernel_cap_t *effective,
671 kernel_cap_t *inheritable,
672 kernel_cap_t *permitted)
674 return call_int_hook(capget, 0, target,
675 effective, inheritable, permitted);
678 int security_capset(struct cred *new, const struct cred *old,
679 const kernel_cap_t *effective,
680 const kernel_cap_t *inheritable,
681 const kernel_cap_t *permitted)
683 return call_int_hook(capset, 0, new, old,
684 effective, inheritable, permitted);
687 int security_capable(const struct cred *cred,
688 struct user_namespace *ns,
692 return call_int_hook(capable, 0, cred, ns, cap, opts);
695 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
697 return call_int_hook(quotactl, 0, cmds, type, id, sb);
700 int security_quota_on(struct dentry *dentry)
702 return call_int_hook(quota_on, 0, dentry);
705 int security_syslog(int type)
707 return call_int_hook(syslog, 0, type);
710 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
712 return call_int_hook(settime, 0, ts, tz);
715 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
717 struct security_hook_list *hp;
718 int cap_sys_admin = 1;
722 * The module will respond with a positive value if
723 * it thinks the __vm_enough_memory() call should be
724 * made with the cap_sys_admin set. If all of the modules
725 * agree that it should be set it will. If any module
726 * thinks it should not be set it won't.
728 hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
729 rc = hp->hook.vm_enough_memory(mm, pages);
735 return __vm_enough_memory(mm, pages, cap_sys_admin);
738 int security_bprm_set_creds(struct linux_binprm *bprm)
740 return call_int_hook(bprm_set_creds, 0, bprm);
743 int security_bprm_check(struct linux_binprm *bprm)
747 ret = call_int_hook(bprm_check_security, 0, bprm);
750 return ima_bprm_check(bprm);
753 void security_bprm_committing_creds(struct linux_binprm *bprm)
755 call_void_hook(bprm_committing_creds, bprm);
758 void security_bprm_committed_creds(struct linux_binprm *bprm)
760 call_void_hook(bprm_committed_creds, bprm);
763 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc)
765 return call_int_hook(fs_context_dup, 0, fc, src_fc);
768 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param)
770 return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param);
773 int security_sb_alloc(struct super_block *sb)
775 return call_int_hook(sb_alloc_security, 0, sb);
778 void security_sb_free(struct super_block *sb)
780 call_void_hook(sb_free_security, sb);
783 void security_free_mnt_opts(void **mnt_opts)
787 call_void_hook(sb_free_mnt_opts, *mnt_opts);
790 EXPORT_SYMBOL(security_free_mnt_opts);
792 int security_sb_eat_lsm_opts(char *options, void **mnt_opts)
794 return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts);
796 EXPORT_SYMBOL(security_sb_eat_lsm_opts);
798 int security_sb_remount(struct super_block *sb,
801 return call_int_hook(sb_remount, 0, sb, mnt_opts);
803 EXPORT_SYMBOL(security_sb_remount);
805 int security_sb_kern_mount(struct super_block *sb)
807 return call_int_hook(sb_kern_mount, 0, sb);
810 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
812 return call_int_hook(sb_show_options, 0, m, sb);
815 int security_sb_statfs(struct dentry *dentry)
817 return call_int_hook(sb_statfs, 0, dentry);
820 int security_sb_mount(const char *dev_name, const struct path *path,
821 const char *type, unsigned long flags, void *data)
823 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
826 int security_sb_umount(struct vfsmount *mnt, int flags)
828 return call_int_hook(sb_umount, 0, mnt, flags);
831 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
833 return call_int_hook(sb_pivotroot, 0, old_path, new_path);
836 int security_sb_set_mnt_opts(struct super_block *sb,
838 unsigned long kern_flags,
839 unsigned long *set_kern_flags)
841 return call_int_hook(sb_set_mnt_opts,
842 mnt_opts ? -EOPNOTSUPP : 0, sb,
843 mnt_opts, kern_flags, set_kern_flags);
845 EXPORT_SYMBOL(security_sb_set_mnt_opts);
847 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
848 struct super_block *newsb,
849 unsigned long kern_flags,
850 unsigned long *set_kern_flags)
852 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
853 kern_flags, set_kern_flags);
855 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
857 int security_add_mnt_opt(const char *option, const char *val, int len,
860 return call_int_hook(sb_add_mnt_opt, -EINVAL,
861 option, val, len, mnt_opts);
863 EXPORT_SYMBOL(security_add_mnt_opt);
865 int security_move_mount(const struct path *from_path, const struct path *to_path)
867 return call_int_hook(move_mount, 0, from_path, to_path);
870 int security_inode_alloc(struct inode *inode)
872 int rc = lsm_inode_alloc(inode);
876 rc = call_int_hook(inode_alloc_security, 0, inode);
878 security_inode_free(inode);
882 static void inode_free_by_rcu(struct rcu_head *head)
885 * The rcu head is at the start of the inode blob
887 kmem_cache_free(lsm_inode_cache, head);
890 void security_inode_free(struct inode *inode)
892 integrity_inode_free(inode);
893 call_void_hook(inode_free_security, inode);
895 * The inode may still be referenced in a path walk and
896 * a call to security_inode_permission() can be made
897 * after inode_free_security() is called. Ideally, the VFS
898 * wouldn't do this, but fixing that is a much harder
899 * job. For now, simply free the i_security via RCU, and
900 * leave the current inode->i_security pointer intact.
901 * The inode will be freed after the RCU grace period too.
903 if (inode->i_security)
904 call_rcu((struct rcu_head *)inode->i_security,
908 int security_dentry_init_security(struct dentry *dentry, int mode,
909 const struct qstr *name, void **ctx,
912 return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
915 EXPORT_SYMBOL(security_dentry_init_security);
917 int security_dentry_create_files_as(struct dentry *dentry, int mode,
919 const struct cred *old, struct cred *new)
921 return call_int_hook(dentry_create_files_as, 0, dentry, mode,
924 EXPORT_SYMBOL(security_dentry_create_files_as);
926 int security_inode_init_security(struct inode *inode, struct inode *dir,
927 const struct qstr *qstr,
928 const initxattrs initxattrs, void *fs_data)
930 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
931 struct xattr *lsm_xattr, *evm_xattr, *xattr;
934 if (unlikely(IS_PRIVATE(inode)))
938 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
939 dir, qstr, NULL, NULL, NULL);
940 memset(new_xattrs, 0, sizeof(new_xattrs));
941 lsm_xattr = new_xattrs;
942 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
945 &lsm_xattr->value_len);
949 evm_xattr = lsm_xattr + 1;
950 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
953 ret = initxattrs(inode, new_xattrs, fs_data);
955 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
957 return (ret == -EOPNOTSUPP) ? 0 : ret;
959 EXPORT_SYMBOL(security_inode_init_security);
961 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
962 const struct qstr *qstr, const char **name,
963 void **value, size_t *len)
965 if (unlikely(IS_PRIVATE(inode)))
967 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
968 qstr, name, value, len);
970 EXPORT_SYMBOL(security_old_inode_init_security);
972 #ifdef CONFIG_SECURITY_PATH
973 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
976 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
978 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
980 EXPORT_SYMBOL(security_path_mknod);
982 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
984 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
986 return call_int_hook(path_mkdir, 0, dir, dentry, mode);
988 EXPORT_SYMBOL(security_path_mkdir);
990 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
992 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
994 return call_int_hook(path_rmdir, 0, dir, dentry);
997 int security_path_unlink(const struct path *dir, struct dentry *dentry)
999 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1001 return call_int_hook(path_unlink, 0, dir, dentry);
1003 EXPORT_SYMBOL(security_path_unlink);
1005 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1006 const char *old_name)
1008 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
1010 return call_int_hook(path_symlink, 0, dir, dentry, old_name);
1013 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1014 struct dentry *new_dentry)
1016 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1018 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
1021 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1022 const struct path *new_dir, struct dentry *new_dentry,
1025 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1026 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1029 if (flags & RENAME_EXCHANGE) {
1030 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
1031 old_dir, old_dentry);
1036 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
1039 EXPORT_SYMBOL(security_path_rename);
1041 int security_path_truncate(const struct path *path)
1043 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1045 return call_int_hook(path_truncate, 0, path);
1048 int security_path_chmod(const struct path *path, umode_t mode)
1050 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1052 return call_int_hook(path_chmod, 0, path, mode);
1055 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1057 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1059 return call_int_hook(path_chown, 0, path, uid, gid);
1062 int security_path_chroot(const struct path *path)
1064 return call_int_hook(path_chroot, 0, path);
1068 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
1070 if (unlikely(IS_PRIVATE(dir)))
1072 return call_int_hook(inode_create, 0, dir, dentry, mode);
1074 EXPORT_SYMBOL_GPL(security_inode_create);
1076 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
1077 struct dentry *new_dentry)
1079 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
1081 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
1084 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
1086 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1088 return call_int_hook(inode_unlink, 0, dir, dentry);
1091 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
1092 const char *old_name)
1094 if (unlikely(IS_PRIVATE(dir)))
1096 return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
1099 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
1101 if (unlikely(IS_PRIVATE(dir)))
1103 return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
1105 EXPORT_SYMBOL_GPL(security_inode_mkdir);
1107 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
1109 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1111 return call_int_hook(inode_rmdir, 0, dir, dentry);
1114 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
1116 if (unlikely(IS_PRIVATE(dir)))
1118 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
1121 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
1122 struct inode *new_dir, struct dentry *new_dentry,
1125 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
1126 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
1129 if (flags & RENAME_EXCHANGE) {
1130 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
1131 old_dir, old_dentry);
1136 return call_int_hook(inode_rename, 0, old_dir, old_dentry,
1137 new_dir, new_dentry);
1140 int security_inode_readlink(struct dentry *dentry)
1142 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1144 return call_int_hook(inode_readlink, 0, dentry);
1147 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
1150 if (unlikely(IS_PRIVATE(inode)))
1152 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
1155 int security_inode_permission(struct inode *inode, int mask)
1157 if (unlikely(IS_PRIVATE(inode)))
1159 return call_int_hook(inode_permission, 0, inode, mask);
1162 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
1166 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1168 ret = call_int_hook(inode_setattr, 0, dentry, attr);
1171 return evm_inode_setattr(dentry, attr);
1173 EXPORT_SYMBOL_GPL(security_inode_setattr);
1175 int security_inode_getattr(const struct path *path)
1177 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
1179 return call_int_hook(inode_getattr, 0, path);
1182 int security_inode_setxattr(struct dentry *dentry, const char *name,
1183 const void *value, size_t size, int flags)
1187 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1190 * SELinux and Smack integrate the cap call,
1191 * so assume that all LSMs supplying this call do so.
1193 ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
1197 ret = cap_inode_setxattr(dentry, name, value, size, flags);
1200 ret = ima_inode_setxattr(dentry, name, value, size);
1203 return evm_inode_setxattr(dentry, name, value, size);
1206 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
1207 const void *value, size_t size, int flags)
1209 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1211 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
1212 evm_inode_post_setxattr(dentry, name, value, size);
1215 int security_inode_getxattr(struct dentry *dentry, const char *name)
1217 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1219 return call_int_hook(inode_getxattr, 0, dentry, name);
1222 int security_inode_listxattr(struct dentry *dentry)
1224 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1226 return call_int_hook(inode_listxattr, 0, dentry);
1229 int security_inode_removexattr(struct dentry *dentry, const char *name)
1233 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
1236 * SELinux and Smack integrate the cap call,
1237 * so assume that all LSMs supplying this call do so.
1239 ret = call_int_hook(inode_removexattr, 1, dentry, name);
1241 ret = cap_inode_removexattr(dentry, name);
1244 ret = ima_inode_removexattr(dentry, name);
1247 return evm_inode_removexattr(dentry, name);
1250 int security_inode_need_killpriv(struct dentry *dentry)
1252 return call_int_hook(inode_need_killpriv, 0, dentry);
1255 int security_inode_killpriv(struct dentry *dentry)
1257 return call_int_hook(inode_killpriv, 0, dentry);
1260 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
1262 struct security_hook_list *hp;
1265 if (unlikely(IS_PRIVATE(inode)))
1268 * Only one module will provide an attribute with a given name.
1270 hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
1271 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
1272 if (rc != -EOPNOTSUPP)
1278 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
1280 struct security_hook_list *hp;
1283 if (unlikely(IS_PRIVATE(inode)))
1286 * Only one module will provide an attribute with a given name.
1288 hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
1289 rc = hp->hook.inode_setsecurity(inode, name, value, size,
1291 if (rc != -EOPNOTSUPP)
1297 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
1299 if (unlikely(IS_PRIVATE(inode)))
1301 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
1303 EXPORT_SYMBOL(security_inode_listsecurity);
1305 void security_inode_getsecid(struct inode *inode, u32 *secid)
1307 call_void_hook(inode_getsecid, inode, secid);
1310 int security_inode_copy_up(struct dentry *src, struct cred **new)
1312 return call_int_hook(inode_copy_up, 0, src, new);
1314 EXPORT_SYMBOL(security_inode_copy_up);
1316 int security_inode_copy_up_xattr(const char *name)
1318 return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
1320 EXPORT_SYMBOL(security_inode_copy_up_xattr);
1322 int security_kernfs_init_security(struct kernfs_node *kn_dir,
1323 struct kernfs_node *kn)
1325 return call_int_hook(kernfs_init_security, 0, kn_dir, kn);
1328 int security_file_permission(struct file *file, int mask)
1332 ret = call_int_hook(file_permission, 0, file, mask);
1336 return fsnotify_perm(file, mask);
1339 int security_file_alloc(struct file *file)
1341 int rc = lsm_file_alloc(file);
1345 rc = call_int_hook(file_alloc_security, 0, file);
1347 security_file_free(file);
1351 void security_file_free(struct file *file)
1355 call_void_hook(file_free_security, file);
1357 blob = file->f_security;
1359 file->f_security = NULL;
1360 kmem_cache_free(lsm_file_cache, blob);
1364 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
1366 return call_int_hook(file_ioctl, 0, file, cmd, arg);
1369 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
1372 * Does we have PROT_READ and does the application expect
1373 * it to imply PROT_EXEC? If not, nothing to talk about...
1375 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
1377 if (!(current->personality & READ_IMPLIES_EXEC))
1380 * if that's an anonymous mapping, let it.
1383 return prot | PROT_EXEC;
1385 * ditto if it's not on noexec mount, except that on !MMU we need
1386 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
1388 if (!path_noexec(&file->f_path)) {
1390 if (file->f_op->mmap_capabilities) {
1391 unsigned caps = file->f_op->mmap_capabilities(file);
1392 if (!(caps & NOMMU_MAP_EXEC))
1396 return prot | PROT_EXEC;
1398 /* anything on noexec mount won't get PROT_EXEC */
1402 int security_mmap_file(struct file *file, unsigned long prot,
1403 unsigned long flags)
1406 ret = call_int_hook(mmap_file, 0, file, prot,
1407 mmap_prot(file, prot), flags);
1410 return ima_file_mmap(file, prot);
1413 int security_mmap_addr(unsigned long addr)
1415 return call_int_hook(mmap_addr, 0, addr);
1418 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
1421 return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
1424 int security_file_lock(struct file *file, unsigned int cmd)
1426 return call_int_hook(file_lock, 0, file, cmd);
1429 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
1431 return call_int_hook(file_fcntl, 0, file, cmd, arg);
1434 void security_file_set_fowner(struct file *file)
1436 call_void_hook(file_set_fowner, file);
1439 int security_file_send_sigiotask(struct task_struct *tsk,
1440 struct fown_struct *fown, int sig)
1442 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
1445 int security_file_receive(struct file *file)
1447 return call_int_hook(file_receive, 0, file);
1450 int security_file_open(struct file *file)
1454 ret = call_int_hook(file_open, 0, file);
1458 return fsnotify_perm(file, MAY_OPEN);
1461 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
1463 int rc = lsm_task_alloc(task);
1467 rc = call_int_hook(task_alloc, 0, task, clone_flags);
1469 security_task_free(task);
1473 void security_task_free(struct task_struct *task)
1475 call_void_hook(task_free, task);
1477 kfree(task->security);
1478 task->security = NULL;
1481 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1483 int rc = lsm_cred_alloc(cred, gfp);
1488 rc = call_int_hook(cred_alloc_blank, 0, cred, gfp);
1490 security_cred_free(cred);
1494 void security_cred_free(struct cred *cred)
1497 * There is a failure case in prepare_creds() that
1498 * may result in a call here with ->security being NULL.
1500 if (unlikely(cred->security == NULL))
1503 call_void_hook(cred_free, cred);
1505 kfree(cred->security);
1506 cred->security = NULL;
1509 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1511 int rc = lsm_cred_alloc(new, gfp);
1516 rc = call_int_hook(cred_prepare, 0, new, old, gfp);
1518 security_cred_free(new);
1522 void security_transfer_creds(struct cred *new, const struct cred *old)
1524 call_void_hook(cred_transfer, new, old);
1527 void security_cred_getsecid(const struct cred *c, u32 *secid)
1530 call_void_hook(cred_getsecid, c, secid);
1532 EXPORT_SYMBOL(security_cred_getsecid);
1534 int security_kernel_act_as(struct cred *new, u32 secid)
1536 return call_int_hook(kernel_act_as, 0, new, secid);
1539 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1541 return call_int_hook(kernel_create_files_as, 0, new, inode);
1544 int security_kernel_module_request(char *kmod_name)
1548 ret = call_int_hook(kernel_module_request, 0, kmod_name);
1551 return integrity_kernel_module_request(kmod_name);
1554 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1558 ret = call_int_hook(kernel_read_file, 0, file, id);
1561 return ima_read_file(file, id);
1563 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1565 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1566 enum kernel_read_file_id id)
1570 ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1573 return ima_post_read_file(file, buf, size, id);
1575 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1577 int security_kernel_load_data(enum kernel_load_data_id id)
1581 ret = call_int_hook(kernel_load_data, 0, id);
1584 return ima_load_data(id);
1586 EXPORT_SYMBOL_GPL(security_kernel_load_data);
1588 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1591 return call_int_hook(task_fix_setuid, 0, new, old, flags);
1594 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1596 return call_int_hook(task_setpgid, 0, p, pgid);
1599 int security_task_getpgid(struct task_struct *p)
1601 return call_int_hook(task_getpgid, 0, p);
1604 int security_task_getsid(struct task_struct *p)
1606 return call_int_hook(task_getsid, 0, p);
1609 void security_task_getsecid(struct task_struct *p, u32 *secid)
1612 call_void_hook(task_getsecid, p, secid);
1614 EXPORT_SYMBOL(security_task_getsecid);
1616 int security_task_setnice(struct task_struct *p, int nice)
1618 return call_int_hook(task_setnice, 0, p, nice);
1621 int security_task_setioprio(struct task_struct *p, int ioprio)
1623 return call_int_hook(task_setioprio, 0, p, ioprio);
1626 int security_task_getioprio(struct task_struct *p)
1628 return call_int_hook(task_getioprio, 0, p);
1631 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1634 return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1637 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1638 struct rlimit *new_rlim)
1640 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1643 int security_task_setscheduler(struct task_struct *p)
1645 return call_int_hook(task_setscheduler, 0, p);
1648 int security_task_getscheduler(struct task_struct *p)
1650 return call_int_hook(task_getscheduler, 0, p);
1653 int security_task_movememory(struct task_struct *p)
1655 return call_int_hook(task_movememory, 0, p);
1658 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
1659 int sig, const struct cred *cred)
1661 return call_int_hook(task_kill, 0, p, info, sig, cred);
1664 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1665 unsigned long arg4, unsigned long arg5)
1669 struct security_hook_list *hp;
1671 hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1672 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1673 if (thisrc != -ENOSYS) {
1682 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1684 call_void_hook(task_to_inode, p, inode);
1687 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1689 return call_int_hook(ipc_permission, 0, ipcp, flag);
1692 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1695 call_void_hook(ipc_getsecid, ipcp, secid);
1698 int security_msg_msg_alloc(struct msg_msg *msg)
1700 int rc = lsm_msg_msg_alloc(msg);
1704 rc = call_int_hook(msg_msg_alloc_security, 0, msg);
1706 security_msg_msg_free(msg);
1710 void security_msg_msg_free(struct msg_msg *msg)
1712 call_void_hook(msg_msg_free_security, msg);
1713 kfree(msg->security);
1714 msg->security = NULL;
1717 int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1719 int rc = lsm_ipc_alloc(msq);
1723 rc = call_int_hook(msg_queue_alloc_security, 0, msq);
1725 security_msg_queue_free(msq);
1729 void security_msg_queue_free(struct kern_ipc_perm *msq)
1731 call_void_hook(msg_queue_free_security, msq);
1732 kfree(msq->security);
1733 msq->security = NULL;
1736 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1738 return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1741 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1743 return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1746 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1747 struct msg_msg *msg, int msqflg)
1749 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1752 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1753 struct task_struct *target, long type, int mode)
1755 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1758 int security_shm_alloc(struct kern_ipc_perm *shp)
1760 int rc = lsm_ipc_alloc(shp);
1764 rc = call_int_hook(shm_alloc_security, 0, shp);
1766 security_shm_free(shp);
1770 void security_shm_free(struct kern_ipc_perm *shp)
1772 call_void_hook(shm_free_security, shp);
1773 kfree(shp->security);
1774 shp->security = NULL;
1777 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
1779 return call_int_hook(shm_associate, 0, shp, shmflg);
1782 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1784 return call_int_hook(shm_shmctl, 0, shp, cmd);
1787 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
1789 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1792 int security_sem_alloc(struct kern_ipc_perm *sma)
1794 int rc = lsm_ipc_alloc(sma);
1798 rc = call_int_hook(sem_alloc_security, 0, sma);
1800 security_sem_free(sma);
1804 void security_sem_free(struct kern_ipc_perm *sma)
1806 call_void_hook(sem_free_security, sma);
1807 kfree(sma->security);
1808 sma->security = NULL;
1811 int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1813 return call_int_hook(sem_associate, 0, sma, semflg);
1816 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1818 return call_int_hook(sem_semctl, 0, sma, cmd);
1821 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
1822 unsigned nsops, int alter)
1824 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1827 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1829 if (unlikely(inode && IS_PRIVATE(inode)))
1831 call_void_hook(d_instantiate, dentry, inode);
1833 EXPORT_SYMBOL(security_d_instantiate);
1835 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
1838 struct security_hook_list *hp;
1840 hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) {
1841 if (lsm != NULL && strcmp(lsm, hp->lsm))
1843 return hp->hook.getprocattr(p, name, value);
1848 int security_setprocattr(const char *lsm, const char *name, void *value,
1851 struct security_hook_list *hp;
1853 hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) {
1854 if (lsm != NULL && strcmp(lsm, hp->lsm))
1856 return hp->hook.setprocattr(name, value, size);
1861 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1863 return call_int_hook(netlink_send, 0, sk, skb);
1866 int security_ismaclabel(const char *name)
1868 return call_int_hook(ismaclabel, 0, name);
1870 EXPORT_SYMBOL(security_ismaclabel);
1872 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1874 return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1877 EXPORT_SYMBOL(security_secid_to_secctx);
1879 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1882 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1884 EXPORT_SYMBOL(security_secctx_to_secid);
1886 void security_release_secctx(char *secdata, u32 seclen)
1888 call_void_hook(release_secctx, secdata, seclen);
1890 EXPORT_SYMBOL(security_release_secctx);
1892 void security_inode_invalidate_secctx(struct inode *inode)
1894 call_void_hook(inode_invalidate_secctx, inode);
1896 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1898 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1900 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1902 EXPORT_SYMBOL(security_inode_notifysecctx);
1904 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1906 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1908 EXPORT_SYMBOL(security_inode_setsecctx);
1910 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1912 return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1914 EXPORT_SYMBOL(security_inode_getsecctx);
1916 #ifdef CONFIG_SECURITY_NETWORK
1918 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1920 return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1922 EXPORT_SYMBOL(security_unix_stream_connect);
1924 int security_unix_may_send(struct socket *sock, struct socket *other)
1926 return call_int_hook(unix_may_send, 0, sock, other);
1928 EXPORT_SYMBOL(security_unix_may_send);
1930 int security_socket_create(int family, int type, int protocol, int kern)
1932 return call_int_hook(socket_create, 0, family, type, protocol, kern);
1935 int security_socket_post_create(struct socket *sock, int family,
1936 int type, int protocol, int kern)
1938 return call_int_hook(socket_post_create, 0, sock, family, type,
1942 int security_socket_socketpair(struct socket *socka, struct socket *sockb)
1944 return call_int_hook(socket_socketpair, 0, socka, sockb);
1946 EXPORT_SYMBOL(security_socket_socketpair);
1948 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1950 return call_int_hook(socket_bind, 0, sock, address, addrlen);
1953 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1955 return call_int_hook(socket_connect, 0, sock, address, addrlen);
1958 int security_socket_listen(struct socket *sock, int backlog)
1960 return call_int_hook(socket_listen, 0, sock, backlog);
1963 int security_socket_accept(struct socket *sock, struct socket *newsock)
1965 return call_int_hook(socket_accept, 0, sock, newsock);
1968 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1970 return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1973 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1974 int size, int flags)
1976 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1979 int security_socket_getsockname(struct socket *sock)
1981 return call_int_hook(socket_getsockname, 0, sock);
1984 int security_socket_getpeername(struct socket *sock)
1986 return call_int_hook(socket_getpeername, 0, sock);
1989 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1991 return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1994 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1996 return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1999 int security_socket_shutdown(struct socket *sock, int how)
2001 return call_int_hook(socket_shutdown, 0, sock, how);
2004 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
2006 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
2008 EXPORT_SYMBOL(security_sock_rcv_skb);
2010 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
2011 int __user *optlen, unsigned len)
2013 return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
2014 optval, optlen, len);
2017 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
2019 return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
2022 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
2024 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
2026 return call_int_hook(sk_alloc_security, 0, sk, family, priority);
2029 void security_sk_free(struct sock *sk)
2031 call_void_hook(sk_free_security, sk);
2034 void security_sk_clone(const struct sock *sk, struct sock *newsk)
2036 call_void_hook(sk_clone_security, sk, newsk);
2038 EXPORT_SYMBOL(security_sk_clone);
2040 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
2042 call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
2044 EXPORT_SYMBOL(security_sk_classify_flow);
2046 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
2048 call_void_hook(req_classify_flow, req, fl);
2050 EXPORT_SYMBOL(security_req_classify_flow);
2052 void security_sock_graft(struct sock *sk, struct socket *parent)
2054 call_void_hook(sock_graft, sk, parent);
2056 EXPORT_SYMBOL(security_sock_graft);
2058 int security_inet_conn_request(struct sock *sk,
2059 struct sk_buff *skb, struct request_sock *req)
2061 return call_int_hook(inet_conn_request, 0, sk, skb, req);
2063 EXPORT_SYMBOL(security_inet_conn_request);
2065 void security_inet_csk_clone(struct sock *newsk,
2066 const struct request_sock *req)
2068 call_void_hook(inet_csk_clone, newsk, req);
2071 void security_inet_conn_established(struct sock *sk,
2072 struct sk_buff *skb)
2074 call_void_hook(inet_conn_established, sk, skb);
2076 EXPORT_SYMBOL(security_inet_conn_established);
2078 int security_secmark_relabel_packet(u32 secid)
2080 return call_int_hook(secmark_relabel_packet, 0, secid);
2082 EXPORT_SYMBOL(security_secmark_relabel_packet);
2084 void security_secmark_refcount_inc(void)
2086 call_void_hook(secmark_refcount_inc);
2088 EXPORT_SYMBOL(security_secmark_refcount_inc);
2090 void security_secmark_refcount_dec(void)
2092 call_void_hook(secmark_refcount_dec);
2094 EXPORT_SYMBOL(security_secmark_refcount_dec);
2096 int security_tun_dev_alloc_security(void **security)
2098 return call_int_hook(tun_dev_alloc_security, 0, security);
2100 EXPORT_SYMBOL(security_tun_dev_alloc_security);
2102 void security_tun_dev_free_security(void *security)
2104 call_void_hook(tun_dev_free_security, security);
2106 EXPORT_SYMBOL(security_tun_dev_free_security);
2108 int security_tun_dev_create(void)
2110 return call_int_hook(tun_dev_create, 0);
2112 EXPORT_SYMBOL(security_tun_dev_create);
2114 int security_tun_dev_attach_queue(void *security)
2116 return call_int_hook(tun_dev_attach_queue, 0, security);
2118 EXPORT_SYMBOL(security_tun_dev_attach_queue);
2120 int security_tun_dev_attach(struct sock *sk, void *security)
2122 return call_int_hook(tun_dev_attach, 0, sk, security);
2124 EXPORT_SYMBOL(security_tun_dev_attach);
2126 int security_tun_dev_open(void *security)
2128 return call_int_hook(tun_dev_open, 0, security);
2130 EXPORT_SYMBOL(security_tun_dev_open);
2132 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb)
2134 return call_int_hook(sctp_assoc_request, 0, ep, skb);
2136 EXPORT_SYMBOL(security_sctp_assoc_request);
2138 int security_sctp_bind_connect(struct sock *sk, int optname,
2139 struct sockaddr *address, int addrlen)
2141 return call_int_hook(sctp_bind_connect, 0, sk, optname,
2144 EXPORT_SYMBOL(security_sctp_bind_connect);
2146 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
2149 call_void_hook(sctp_sk_clone, ep, sk, newsk);
2151 EXPORT_SYMBOL(security_sctp_sk_clone);
2153 #endif /* CONFIG_SECURITY_NETWORK */
2155 #ifdef CONFIG_SECURITY_INFINIBAND
2157 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
2159 return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
2161 EXPORT_SYMBOL(security_ib_pkey_access);
2163 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
2165 return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
2167 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
2169 int security_ib_alloc_security(void **sec)
2171 return call_int_hook(ib_alloc_security, 0, sec);
2173 EXPORT_SYMBOL(security_ib_alloc_security);
2175 void security_ib_free_security(void *sec)
2177 call_void_hook(ib_free_security, sec);
2179 EXPORT_SYMBOL(security_ib_free_security);
2180 #endif /* CONFIG_SECURITY_INFINIBAND */
2182 #ifdef CONFIG_SECURITY_NETWORK_XFRM
2184 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
2185 struct xfrm_user_sec_ctx *sec_ctx,
2188 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
2190 EXPORT_SYMBOL(security_xfrm_policy_alloc);
2192 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
2193 struct xfrm_sec_ctx **new_ctxp)
2195 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
2198 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
2200 call_void_hook(xfrm_policy_free_security, ctx);
2202 EXPORT_SYMBOL(security_xfrm_policy_free);
2204 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
2206 return call_int_hook(xfrm_policy_delete_security, 0, ctx);
2209 int security_xfrm_state_alloc(struct xfrm_state *x,
2210 struct xfrm_user_sec_ctx *sec_ctx)
2212 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
2214 EXPORT_SYMBOL(security_xfrm_state_alloc);
2216 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
2217 struct xfrm_sec_ctx *polsec, u32 secid)
2219 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
2222 int security_xfrm_state_delete(struct xfrm_state *x)
2224 return call_int_hook(xfrm_state_delete_security, 0, x);
2226 EXPORT_SYMBOL(security_xfrm_state_delete);
2228 void security_xfrm_state_free(struct xfrm_state *x)
2230 call_void_hook(xfrm_state_free_security, x);
2233 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
2235 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
2238 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
2239 struct xfrm_policy *xp,
2240 const struct flowi *fl)
2242 struct security_hook_list *hp;
2246 * Since this function is expected to return 0 or 1, the judgment
2247 * becomes difficult if multiple LSMs supply this call. Fortunately,
2248 * we can use the first LSM's judgment because currently only SELinux
2249 * supplies this call.
2251 * For speed optimization, we explicitly break the loop rather than
2254 hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
2256 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
2262 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
2264 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
2267 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
2269 int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
2274 EXPORT_SYMBOL(security_skb_classify_flow);
2276 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
2280 int security_key_alloc(struct key *key, const struct cred *cred,
2281 unsigned long flags)
2283 return call_int_hook(key_alloc, 0, key, cred, flags);
2286 void security_key_free(struct key *key)
2288 call_void_hook(key_free, key);
2291 int security_key_permission(key_ref_t key_ref,
2292 const struct cred *cred, unsigned perm)
2294 return call_int_hook(key_permission, 0, key_ref, cred, perm);
2297 int security_key_getsecurity(struct key *key, char **_buffer)
2300 return call_int_hook(key_getsecurity, 0, key, _buffer);
2303 #endif /* CONFIG_KEYS */
2307 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
2309 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
2312 int security_audit_rule_known(struct audit_krule *krule)
2314 return call_int_hook(audit_rule_known, 0, krule);
2317 void security_audit_rule_free(void *lsmrule)
2319 call_void_hook(audit_rule_free, lsmrule);
2322 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule)
2324 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule);
2326 #endif /* CONFIG_AUDIT */
2328 #ifdef CONFIG_BPF_SYSCALL
2329 int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
2331 return call_int_hook(bpf, 0, cmd, attr, size);
2333 int security_bpf_map(struct bpf_map *map, fmode_t fmode)
2335 return call_int_hook(bpf_map, 0, map, fmode);
2337 int security_bpf_prog(struct bpf_prog *prog)
2339 return call_int_hook(bpf_prog, 0, prog);
2341 int security_bpf_map_alloc(struct bpf_map *map)
2343 return call_int_hook(bpf_map_alloc_security, 0, map);
2345 int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
2347 return call_int_hook(bpf_prog_alloc_security, 0, aux);
2349 void security_bpf_map_free(struct bpf_map *map)
2351 call_void_hook(bpf_map_free_security, map);
2353 void security_bpf_prog_free(struct bpf_prog_aux *aux)
2355 call_void_hook(bpf_prog_free_security, aux);
2357 #endif /* CONFIG_BPF_SYSCALL */