4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
9 * Copyright (C) 2016 Mellanox Techonologies
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * Due to this file being licensed under the GPL there is controversy over
17 * whether this permits you to write a module that #includes this file
18 * without placing your module under the GPL. Please consult a lawyer for
19 * advice before doing this.
23 #ifndef __LINUX_SECURITY_H
24 #define __LINUX_SECURITY_H
26 #include <linux/key.h>
27 #include <linux/capability.h>
29 #include <linux/slab.h>
30 #include <linux/err.h>
31 #include <linux/string.h>
38 struct kernel_siginfo;
51 struct file_operations;
61 /* Default (no) options for the capable function */
62 #define CAP_OPT_NONE 0x0
63 /* If capable should audit the security request */
64 #define CAP_OPT_NOAUDIT BIT(1)
65 /* If capable is being called by a setid function */
66 #define CAP_OPT_INSETID BIT(2)
68 /* LSM Agnostic defines for fs_context::lsm_flags */
69 #define SECURITY_LSM_NATIVE_LABELS 1
73 struct user_namespace;
81 * These are reasons that can be passed to the security_locked_down()
82 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the
83 * ability for userland to modify kernel code) are placed before
84 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel
85 * confidentiality (ie, the ability for userland to extract
86 * information from the running kernel that would otherwise be
87 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX.
89 * LSM authors should note that the semantics of any given lockdown
90 * reason are not guaranteed to be stable - the same reason may block
91 * one set of features in one kernel release, and a slightly different
92 * set of features in a later kernel release. LSMs that seek to expose
93 * lockdown policy at any level of granularity other than "none",
94 * "integrity" or "confidentiality" are responsible for either
95 * ensuring that they expose a consistent level of functionality to
96 * userland, or ensuring that userland is aware that this is
97 * potentially a moving target. It is easy to misuse this information
98 * in a way that could break userspace. Please be careful not to do
101 * If you add to this, remember to extend lockdown_reasons in
102 * security/lockdown/lockdown.c.
104 enum lockdown_reason {
106 LOCKDOWN_MODULE_SIGNATURE,
109 LOCKDOWN_HIBERNATION,
111 LOCKDOWN_INTEGRITY_MAX,
112 LOCKDOWN_CONFIDENTIALITY_MAX,
115 /* These functions are in security/commoncap.c */
116 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
117 int cap, unsigned int opts);
118 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
119 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
120 extern int cap_ptrace_traceme(struct task_struct *parent);
121 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
122 extern int cap_capset(struct cred *new, const struct cred *old,
123 const kernel_cap_t *effective,
124 const kernel_cap_t *inheritable,
125 const kernel_cap_t *permitted);
126 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
127 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
128 const void *value, size_t size, int flags);
129 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
130 extern int cap_inode_need_killpriv(struct dentry *dentry);
131 extern int cap_inode_killpriv(struct dentry *dentry);
132 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
133 void **buffer, bool alloc);
134 extern int cap_mmap_addr(unsigned long addr);
135 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
136 unsigned long prot, unsigned long flags);
137 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
138 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
139 unsigned long arg4, unsigned long arg5);
140 extern int cap_task_setscheduler(struct task_struct *p);
141 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
142 extern int cap_task_setnice(struct task_struct *p, int nice);
143 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
152 struct xfrm_selector;
155 struct xfrm_user_sec_ctx;
157 struct sctp_endpoint;
160 extern unsigned long mmap_min_addr;
161 extern unsigned long dac_mmap_min_addr;
163 #define mmap_min_addr 0UL
164 #define dac_mmap_min_addr 0UL
168 * Values used in the task_security_ops calls
170 /* setuid or setgid, id0 == uid or gid */
171 #define LSM_SETID_ID 1
173 /* setreuid or setregid, id0 == real, id1 == eff */
174 #define LSM_SETID_RE 2
176 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
177 #define LSM_SETID_RES 4
179 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
180 #define LSM_SETID_FS 8
182 /* Flags for security_task_prlimit(). */
183 #define LSM_PRLIMIT_READ 1
184 #define LSM_PRLIMIT_WRITE 2
186 /* forward declares to avoid warnings */
190 /* bprm->unsafe reasons */
191 #define LSM_UNSAFE_SHARE 1
192 #define LSM_UNSAFE_PTRACE 2
193 #define LSM_UNSAFE_NO_NEW_PRIVS 4
196 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
197 void __user *buffer, size_t *lenp, loff_t *ppos);
200 /* security_inode_init_security callback function to write xattrs */
201 typedef int (*initxattrs) (struct inode *inode,
202 const struct xattr *xattr_array, void *fs_data);
205 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */
206 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM,
207 #define __data_id_stringify(dummy, str) #str,
209 enum kernel_load_data_id {
210 __kernel_read_file_id(__data_id_enumify)
213 static const char * const kernel_load_data_str[] = {
214 __kernel_read_file_id(__data_id_stringify)
217 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
219 if ((unsigned)id >= LOADING_MAX_ID)
220 return kernel_load_data_str[LOADING_UNKNOWN];
222 return kernel_load_data_str[id];
225 #ifdef CONFIG_SECURITY
227 int call_lsm_notifier(enum lsm_event event, void *data);
228 int register_lsm_notifier(struct notifier_block *nb);
229 int unregister_lsm_notifier(struct notifier_block *nb);
232 extern int security_init(void);
233 extern int early_security_init(void);
235 /* Security operations */
236 int security_binder_set_context_mgr(struct task_struct *mgr);
237 int security_binder_transaction(struct task_struct *from,
238 struct task_struct *to);
239 int security_binder_transfer_binder(struct task_struct *from,
240 struct task_struct *to);
241 int security_binder_transfer_file(struct task_struct *from,
242 struct task_struct *to, struct file *file);
243 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
244 int security_ptrace_traceme(struct task_struct *parent);
245 int security_capget(struct task_struct *target,
246 kernel_cap_t *effective,
247 kernel_cap_t *inheritable,
248 kernel_cap_t *permitted);
249 int security_capset(struct cred *new, const struct cred *old,
250 const kernel_cap_t *effective,
251 const kernel_cap_t *inheritable,
252 const kernel_cap_t *permitted);
253 int security_capable(const struct cred *cred,
254 struct user_namespace *ns,
257 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
258 int security_quota_on(struct dentry *dentry);
259 int security_syslog(int type);
260 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
261 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
262 int security_bprm_set_creds(struct linux_binprm *bprm);
263 int security_bprm_check(struct linux_binprm *bprm);
264 void security_bprm_committing_creds(struct linux_binprm *bprm);
265 void security_bprm_committed_creds(struct linux_binprm *bprm);
266 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc);
267 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param);
268 int security_sb_alloc(struct super_block *sb);
269 void security_sb_free(struct super_block *sb);
270 void security_free_mnt_opts(void **mnt_opts);
271 int security_sb_eat_lsm_opts(char *options, void **mnt_opts);
272 int security_sb_remount(struct super_block *sb, void *mnt_opts);
273 int security_sb_kern_mount(struct super_block *sb);
274 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
275 int security_sb_statfs(struct dentry *dentry);
276 int security_sb_mount(const char *dev_name, const struct path *path,
277 const char *type, unsigned long flags, void *data);
278 int security_sb_umount(struct vfsmount *mnt, int flags);
279 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
280 int security_sb_set_mnt_opts(struct super_block *sb,
282 unsigned long kern_flags,
283 unsigned long *set_kern_flags);
284 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
285 struct super_block *newsb,
286 unsigned long kern_flags,
287 unsigned long *set_kern_flags);
288 int security_add_mnt_opt(const char *option, const char *val,
289 int len, void **mnt_opts);
290 int security_move_mount(const struct path *from_path, const struct path *to_path);
291 int security_dentry_init_security(struct dentry *dentry, int mode,
292 const struct qstr *name, void **ctx,
294 int security_dentry_create_files_as(struct dentry *dentry, int mode,
296 const struct cred *old,
299 int security_inode_alloc(struct inode *inode);
300 void security_inode_free(struct inode *inode);
301 int security_inode_init_security(struct inode *inode, struct inode *dir,
302 const struct qstr *qstr,
303 initxattrs initxattrs, void *fs_data);
304 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
305 const struct qstr *qstr, const char **name,
306 void **value, size_t *len);
307 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
308 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
309 struct dentry *new_dentry);
310 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
311 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
312 const char *old_name);
313 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
314 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
315 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
316 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
317 struct inode *new_dir, struct dentry *new_dentry,
319 int security_inode_readlink(struct dentry *dentry);
320 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
322 int security_inode_permission(struct inode *inode, int mask);
323 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
324 int security_inode_getattr(const struct path *path);
325 int security_inode_setxattr(struct dentry *dentry, const char *name,
326 const void *value, size_t size, int flags);
327 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
328 const void *value, size_t size, int flags);
329 int security_inode_getxattr(struct dentry *dentry, const char *name);
330 int security_inode_listxattr(struct dentry *dentry);
331 int security_inode_removexattr(struct dentry *dentry, const char *name);
332 int security_inode_need_killpriv(struct dentry *dentry);
333 int security_inode_killpriv(struct dentry *dentry);
334 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
335 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
336 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
337 void security_inode_getsecid(struct inode *inode, u32 *secid);
338 int security_inode_copy_up(struct dentry *src, struct cred **new);
339 int security_inode_copy_up_xattr(const char *name);
340 int security_kernfs_init_security(struct kernfs_node *kn_dir,
341 struct kernfs_node *kn);
342 int security_file_permission(struct file *file, int mask);
343 int security_file_alloc(struct file *file);
344 void security_file_free(struct file *file);
345 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
346 int security_mmap_file(struct file *file, unsigned long prot,
347 unsigned long flags);
348 int security_mmap_addr(unsigned long addr);
349 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
351 int security_file_lock(struct file *file, unsigned int cmd);
352 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
353 void security_file_set_fowner(struct file *file);
354 int security_file_send_sigiotask(struct task_struct *tsk,
355 struct fown_struct *fown, int sig);
356 int security_file_receive(struct file *file);
357 int security_file_open(struct file *file);
358 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
359 void security_task_free(struct task_struct *task);
360 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
361 void security_cred_free(struct cred *cred);
362 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
363 void security_transfer_creds(struct cred *new, const struct cred *old);
364 void security_cred_getsecid(const struct cred *c, u32 *secid);
365 int security_kernel_act_as(struct cred *new, u32 secid);
366 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
367 int security_kernel_module_request(char *kmod_name);
368 int security_kernel_load_data(enum kernel_load_data_id id);
369 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
370 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
371 enum kernel_read_file_id id);
372 int security_task_fix_setuid(struct cred *new, const struct cred *old,
374 int security_task_setpgid(struct task_struct *p, pid_t pgid);
375 int security_task_getpgid(struct task_struct *p);
376 int security_task_getsid(struct task_struct *p);
377 void security_task_getsecid(struct task_struct *p, u32 *secid);
378 int security_task_setnice(struct task_struct *p, int nice);
379 int security_task_setioprio(struct task_struct *p, int ioprio);
380 int security_task_getioprio(struct task_struct *p);
381 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
383 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
384 struct rlimit *new_rlim);
385 int security_task_setscheduler(struct task_struct *p);
386 int security_task_getscheduler(struct task_struct *p);
387 int security_task_movememory(struct task_struct *p);
388 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
389 int sig, const struct cred *cred);
390 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
391 unsigned long arg4, unsigned long arg5);
392 void security_task_to_inode(struct task_struct *p, struct inode *inode);
393 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
394 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
395 int security_msg_msg_alloc(struct msg_msg *msg);
396 void security_msg_msg_free(struct msg_msg *msg);
397 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
398 void security_msg_queue_free(struct kern_ipc_perm *msq);
399 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
400 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
401 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
402 struct msg_msg *msg, int msqflg);
403 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
404 struct task_struct *target, long type, int mode);
405 int security_shm_alloc(struct kern_ipc_perm *shp);
406 void security_shm_free(struct kern_ipc_perm *shp);
407 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
408 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
409 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
410 int security_sem_alloc(struct kern_ipc_perm *sma);
411 void security_sem_free(struct kern_ipc_perm *sma);
412 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
413 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
414 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
415 unsigned nsops, int alter);
416 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
417 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
419 int security_setprocattr(const char *lsm, const char *name, void *value,
421 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
422 int security_ismaclabel(const char *name);
423 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
424 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
425 void security_release_secctx(char *secdata, u32 seclen);
427 void security_inode_invalidate_secctx(struct inode *inode);
428 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
429 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
430 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
431 int security_locked_down(enum lockdown_reason what);
432 #else /* CONFIG_SECURITY */
434 static inline int call_lsm_notifier(enum lsm_event event, void *data)
439 static inline int register_lsm_notifier(struct notifier_block *nb)
444 static inline int unregister_lsm_notifier(struct notifier_block *nb)
449 static inline void security_free_mnt_opts(void **mnt_opts)
454 * This is the default capabilities functionality. Most of these functions
455 * are just stubbed out, but a few must call the proper capable code.
458 static inline int security_init(void)
463 static inline int early_security_init(void)
468 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
473 static inline int security_binder_transaction(struct task_struct *from,
474 struct task_struct *to)
479 static inline int security_binder_transfer_binder(struct task_struct *from,
480 struct task_struct *to)
485 static inline int security_binder_transfer_file(struct task_struct *from,
486 struct task_struct *to,
492 static inline int security_ptrace_access_check(struct task_struct *child,
495 return cap_ptrace_access_check(child, mode);
498 static inline int security_ptrace_traceme(struct task_struct *parent)
500 return cap_ptrace_traceme(parent);
503 static inline int security_capget(struct task_struct *target,
504 kernel_cap_t *effective,
505 kernel_cap_t *inheritable,
506 kernel_cap_t *permitted)
508 return cap_capget(target, effective, inheritable, permitted);
511 static inline int security_capset(struct cred *new,
512 const struct cred *old,
513 const kernel_cap_t *effective,
514 const kernel_cap_t *inheritable,
515 const kernel_cap_t *permitted)
517 return cap_capset(new, old, effective, inheritable, permitted);
520 static inline int security_capable(const struct cred *cred,
521 struct user_namespace *ns,
525 return cap_capable(cred, ns, cap, opts);
528 static inline int security_quotactl(int cmds, int type, int id,
529 struct super_block *sb)
534 static inline int security_quota_on(struct dentry *dentry)
539 static inline int security_syslog(int type)
544 static inline int security_settime64(const struct timespec64 *ts,
545 const struct timezone *tz)
547 return cap_settime(ts, tz);
550 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
552 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
555 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
557 return cap_bprm_set_creds(bprm);
560 static inline int security_bprm_check(struct linux_binprm *bprm)
565 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
569 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
573 static inline int security_fs_context_dup(struct fs_context *fc,
574 struct fs_context *src_fc)
578 static inline int security_fs_context_parse_param(struct fs_context *fc,
579 struct fs_parameter *param)
584 static inline int security_sb_alloc(struct super_block *sb)
589 static inline void security_sb_free(struct super_block *sb)
592 static inline int security_sb_eat_lsm_opts(char *options,
598 static inline int security_sb_remount(struct super_block *sb,
604 static inline int security_sb_kern_mount(struct super_block *sb)
609 static inline int security_sb_show_options(struct seq_file *m,
610 struct super_block *sb)
615 static inline int security_sb_statfs(struct dentry *dentry)
620 static inline int security_sb_mount(const char *dev_name, const struct path *path,
621 const char *type, unsigned long flags,
627 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
632 static inline int security_sb_pivotroot(const struct path *old_path,
633 const struct path *new_path)
638 static inline int security_sb_set_mnt_opts(struct super_block *sb,
640 unsigned long kern_flags,
641 unsigned long *set_kern_flags)
646 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
647 struct super_block *newsb,
648 unsigned long kern_flags,
649 unsigned long *set_kern_flags)
654 static inline int security_add_mnt_opt(const char *option, const char *val,
655 int len, void **mnt_opts)
660 static inline int security_move_mount(const struct path *from_path,
661 const struct path *to_path)
666 static inline int security_inode_alloc(struct inode *inode)
671 static inline void security_inode_free(struct inode *inode)
674 static inline int security_dentry_init_security(struct dentry *dentry,
676 const struct qstr *name,
683 static inline int security_dentry_create_files_as(struct dentry *dentry,
684 int mode, struct qstr *name,
685 const struct cred *old,
692 static inline int security_inode_init_security(struct inode *inode,
694 const struct qstr *qstr,
695 const initxattrs xattrs,
701 static inline int security_old_inode_init_security(struct inode *inode,
703 const struct qstr *qstr,
705 void **value, size_t *len)
710 static inline int security_inode_create(struct inode *dir,
711 struct dentry *dentry,
717 static inline int security_inode_link(struct dentry *old_dentry,
719 struct dentry *new_dentry)
724 static inline int security_inode_unlink(struct inode *dir,
725 struct dentry *dentry)
730 static inline int security_inode_symlink(struct inode *dir,
731 struct dentry *dentry,
732 const char *old_name)
737 static inline int security_inode_mkdir(struct inode *dir,
738 struct dentry *dentry,
744 static inline int security_inode_rmdir(struct inode *dir,
745 struct dentry *dentry)
750 static inline int security_inode_mknod(struct inode *dir,
751 struct dentry *dentry,
757 static inline int security_inode_rename(struct inode *old_dir,
758 struct dentry *old_dentry,
759 struct inode *new_dir,
760 struct dentry *new_dentry,
766 static inline int security_inode_readlink(struct dentry *dentry)
771 static inline int security_inode_follow_link(struct dentry *dentry,
778 static inline int security_inode_permission(struct inode *inode, int mask)
783 static inline int security_inode_setattr(struct dentry *dentry,
789 static inline int security_inode_getattr(const struct path *path)
794 static inline int security_inode_setxattr(struct dentry *dentry,
795 const char *name, const void *value, size_t size, int flags)
797 return cap_inode_setxattr(dentry, name, value, size, flags);
800 static inline void security_inode_post_setxattr(struct dentry *dentry,
801 const char *name, const void *value, size_t size, int flags)
804 static inline int security_inode_getxattr(struct dentry *dentry,
810 static inline int security_inode_listxattr(struct dentry *dentry)
815 static inline int security_inode_removexattr(struct dentry *dentry,
818 return cap_inode_removexattr(dentry, name);
821 static inline int security_inode_need_killpriv(struct dentry *dentry)
823 return cap_inode_need_killpriv(dentry);
826 static inline int security_inode_killpriv(struct dentry *dentry)
828 return cap_inode_killpriv(dentry);
831 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
836 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
841 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
846 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
851 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
856 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir,
857 struct kernfs_node *kn)
862 static inline int security_inode_copy_up_xattr(const char *name)
867 static inline int security_file_permission(struct file *file, int mask)
872 static inline int security_file_alloc(struct file *file)
877 static inline void security_file_free(struct file *file)
880 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
886 static inline int security_mmap_file(struct file *file, unsigned long prot,
892 static inline int security_mmap_addr(unsigned long addr)
894 return cap_mmap_addr(addr);
897 static inline int security_file_mprotect(struct vm_area_struct *vma,
898 unsigned long reqprot,
904 static inline int security_file_lock(struct file *file, unsigned int cmd)
909 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
915 static inline void security_file_set_fowner(struct file *file)
920 static inline int security_file_send_sigiotask(struct task_struct *tsk,
921 struct fown_struct *fown,
927 static inline int security_file_receive(struct file *file)
932 static inline int security_file_open(struct file *file)
937 static inline int security_task_alloc(struct task_struct *task,
938 unsigned long clone_flags)
943 static inline void security_task_free(struct task_struct *task)
946 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
951 static inline void security_cred_free(struct cred *cred)
954 static inline int security_prepare_creds(struct cred *new,
955 const struct cred *old,
961 static inline void security_transfer_creds(struct cred *new,
962 const struct cred *old)
966 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
971 static inline int security_kernel_create_files_as(struct cred *cred,
977 static inline int security_kernel_module_request(char *kmod_name)
982 static inline int security_kernel_load_data(enum kernel_load_data_id id)
987 static inline int security_kernel_read_file(struct file *file,
988 enum kernel_read_file_id id)
993 static inline int security_kernel_post_read_file(struct file *file,
994 char *buf, loff_t size,
995 enum kernel_read_file_id id)
1000 static inline int security_task_fix_setuid(struct cred *new,
1001 const struct cred *old,
1004 return cap_task_fix_setuid(new, old, flags);
1007 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
1012 static inline int security_task_getpgid(struct task_struct *p)
1017 static inline int security_task_getsid(struct task_struct *p)
1022 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
1027 static inline int security_task_setnice(struct task_struct *p, int nice)
1029 return cap_task_setnice(p, nice);
1032 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
1034 return cap_task_setioprio(p, ioprio);
1037 static inline int security_task_getioprio(struct task_struct *p)
1042 static inline int security_task_prlimit(const struct cred *cred,
1043 const struct cred *tcred,
1049 static inline int security_task_setrlimit(struct task_struct *p,
1050 unsigned int resource,
1051 struct rlimit *new_rlim)
1056 static inline int security_task_setscheduler(struct task_struct *p)
1058 return cap_task_setscheduler(p);
1061 static inline int security_task_getscheduler(struct task_struct *p)
1066 static inline int security_task_movememory(struct task_struct *p)
1071 static inline int security_task_kill(struct task_struct *p,
1072 struct kernel_siginfo *info, int sig,
1073 const struct cred *cred)
1078 static inline int security_task_prctl(int option, unsigned long arg2,
1083 return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1086 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1089 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1095 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1100 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1105 static inline void security_msg_msg_free(struct msg_msg *msg)
1108 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1113 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1116 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1122 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1127 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1128 struct msg_msg *msg, int msqflg)
1133 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1134 struct msg_msg *msg,
1135 struct task_struct *target,
1136 long type, int mode)
1141 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1146 static inline void security_shm_free(struct kern_ipc_perm *shp)
1149 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1155 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1160 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1161 char __user *shmaddr, int shmflg)
1166 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1171 static inline void security_sem_free(struct kern_ipc_perm *sma)
1174 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1179 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1184 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1185 struct sembuf *sops, unsigned nsops,
1191 static inline void security_d_instantiate(struct dentry *dentry,
1192 struct inode *inode)
1195 static inline int security_getprocattr(struct task_struct *p, const char *lsm,
1196 char *name, char **value)
1201 static inline int security_setprocattr(const char *lsm, char *name,
1202 void *value, size_t size)
1207 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1212 static inline int security_ismaclabel(const char *name)
1217 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1222 static inline int security_secctx_to_secid(const char *secdata,
1229 static inline void security_release_secctx(char *secdata, u32 seclen)
1233 static inline void security_inode_invalidate_secctx(struct inode *inode)
1237 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1241 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1245 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1249 static inline int security_locked_down(enum lockdown_reason what)
1253 #endif /* CONFIG_SECURITY */
1255 #ifdef CONFIG_SECURITY_NETWORK
1257 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1258 int security_unix_may_send(struct socket *sock, struct socket *other);
1259 int security_socket_create(int family, int type, int protocol, int kern);
1260 int security_socket_post_create(struct socket *sock, int family,
1261 int type, int protocol, int kern);
1262 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1263 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1264 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1265 int security_socket_listen(struct socket *sock, int backlog);
1266 int security_socket_accept(struct socket *sock, struct socket *newsock);
1267 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1268 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1269 int size, int flags);
1270 int security_socket_getsockname(struct socket *sock);
1271 int security_socket_getpeername(struct socket *sock);
1272 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1273 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1274 int security_socket_shutdown(struct socket *sock, int how);
1275 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1276 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1277 int __user *optlen, unsigned len);
1278 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1279 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1280 void security_sk_free(struct sock *sk);
1281 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1282 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1283 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1284 void security_sock_graft(struct sock*sk, struct socket *parent);
1285 int security_inet_conn_request(struct sock *sk,
1286 struct sk_buff *skb, struct request_sock *req);
1287 void security_inet_csk_clone(struct sock *newsk,
1288 const struct request_sock *req);
1289 void security_inet_conn_established(struct sock *sk,
1290 struct sk_buff *skb);
1291 int security_secmark_relabel_packet(u32 secid);
1292 void security_secmark_refcount_inc(void);
1293 void security_secmark_refcount_dec(void);
1294 int security_tun_dev_alloc_security(void **security);
1295 void security_tun_dev_free_security(void *security);
1296 int security_tun_dev_create(void);
1297 int security_tun_dev_attach_queue(void *security);
1298 int security_tun_dev_attach(struct sock *sk, void *security);
1299 int security_tun_dev_open(void *security);
1300 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1301 int security_sctp_bind_connect(struct sock *sk, int optname,
1302 struct sockaddr *address, int addrlen);
1303 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1304 struct sock *newsk);
1306 #else /* CONFIG_SECURITY_NETWORK */
1307 static inline int security_unix_stream_connect(struct sock *sock,
1314 static inline int security_unix_may_send(struct socket *sock,
1315 struct socket *other)
1320 static inline int security_socket_create(int family, int type,
1321 int protocol, int kern)
1326 static inline int security_socket_post_create(struct socket *sock,
1329 int protocol, int kern)
1334 static inline int security_socket_socketpair(struct socket *socka,
1335 struct socket *sockb)
1340 static inline int security_socket_bind(struct socket *sock,
1341 struct sockaddr *address,
1347 static inline int security_socket_connect(struct socket *sock,
1348 struct sockaddr *address,
1354 static inline int security_socket_listen(struct socket *sock, int backlog)
1359 static inline int security_socket_accept(struct socket *sock,
1360 struct socket *newsock)
1365 static inline int security_socket_sendmsg(struct socket *sock,
1366 struct msghdr *msg, int size)
1371 static inline int security_socket_recvmsg(struct socket *sock,
1372 struct msghdr *msg, int size,
1378 static inline int security_socket_getsockname(struct socket *sock)
1383 static inline int security_socket_getpeername(struct socket *sock)
1388 static inline int security_socket_getsockopt(struct socket *sock,
1389 int level, int optname)
1394 static inline int security_socket_setsockopt(struct socket *sock,
1395 int level, int optname)
1400 static inline int security_socket_shutdown(struct socket *sock, int how)
1404 static inline int security_sock_rcv_skb(struct sock *sk,
1405 struct sk_buff *skb)
1410 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1411 int __user *optlen, unsigned len)
1413 return -ENOPROTOOPT;
1416 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1418 return -ENOPROTOOPT;
1421 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1426 static inline void security_sk_free(struct sock *sk)
1430 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1434 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1438 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1442 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1446 static inline int security_inet_conn_request(struct sock *sk,
1447 struct sk_buff *skb, struct request_sock *req)
1452 static inline void security_inet_csk_clone(struct sock *newsk,
1453 const struct request_sock *req)
1457 static inline void security_inet_conn_established(struct sock *sk,
1458 struct sk_buff *skb)
1462 static inline int security_secmark_relabel_packet(u32 secid)
1467 static inline void security_secmark_refcount_inc(void)
1471 static inline void security_secmark_refcount_dec(void)
1475 static inline int security_tun_dev_alloc_security(void **security)
1480 static inline void security_tun_dev_free_security(void *security)
1484 static inline int security_tun_dev_create(void)
1489 static inline int security_tun_dev_attach_queue(void *security)
1494 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1499 static inline int security_tun_dev_open(void *security)
1504 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1505 struct sk_buff *skb)
1510 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1511 struct sockaddr *address,
1517 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1522 #endif /* CONFIG_SECURITY_NETWORK */
1524 #ifdef CONFIG_SECURITY_INFINIBAND
1525 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1526 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1527 int security_ib_alloc_security(void **sec);
1528 void security_ib_free_security(void *sec);
1529 #else /* CONFIG_SECURITY_INFINIBAND */
1530 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1535 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1540 static inline int security_ib_alloc_security(void **sec)
1545 static inline void security_ib_free_security(void *sec)
1548 #endif /* CONFIG_SECURITY_INFINIBAND */
1550 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1552 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1553 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1554 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1555 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1556 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1557 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1558 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1559 struct xfrm_sec_ctx *polsec, u32 secid);
1560 int security_xfrm_state_delete(struct xfrm_state *x);
1561 void security_xfrm_state_free(struct xfrm_state *x);
1562 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1563 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1564 struct xfrm_policy *xp,
1565 const struct flowi *fl);
1566 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1567 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1569 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1571 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1572 struct xfrm_user_sec_ctx *sec_ctx,
1578 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1583 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1587 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1592 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1593 struct xfrm_user_sec_ctx *sec_ctx)
1598 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1599 struct xfrm_sec_ctx *polsec, u32 secid)
1604 static inline void security_xfrm_state_free(struct xfrm_state *x)
1608 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1613 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1618 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1619 struct xfrm_policy *xp, const struct flowi *fl)
1624 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1629 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1633 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1635 #ifdef CONFIG_SECURITY_PATH
1636 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1637 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1638 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1639 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1641 int security_path_truncate(const struct path *path);
1642 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1643 const char *old_name);
1644 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1645 struct dentry *new_dentry);
1646 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1647 const struct path *new_dir, struct dentry *new_dentry,
1648 unsigned int flags);
1649 int security_path_chmod(const struct path *path, umode_t mode);
1650 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1651 int security_path_chroot(const struct path *path);
1652 #else /* CONFIG_SECURITY_PATH */
1653 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1658 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1664 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1669 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1670 umode_t mode, unsigned int dev)
1675 static inline int security_path_truncate(const struct path *path)
1680 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1681 const char *old_name)
1686 static inline int security_path_link(struct dentry *old_dentry,
1687 const struct path *new_dir,
1688 struct dentry *new_dentry)
1693 static inline int security_path_rename(const struct path *old_dir,
1694 struct dentry *old_dentry,
1695 const struct path *new_dir,
1696 struct dentry *new_dentry,
1702 static inline int security_path_chmod(const struct path *path, umode_t mode)
1707 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1712 static inline int security_path_chroot(const struct path *path)
1716 #endif /* CONFIG_SECURITY_PATH */
1719 #ifdef CONFIG_SECURITY
1721 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1722 void security_key_free(struct key *key);
1723 int security_key_permission(key_ref_t key_ref,
1724 const struct cred *cred, unsigned perm);
1725 int security_key_getsecurity(struct key *key, char **_buffer);
1729 static inline int security_key_alloc(struct key *key,
1730 const struct cred *cred,
1731 unsigned long flags)
1736 static inline void security_key_free(struct key *key)
1740 static inline int security_key_permission(key_ref_t key_ref,
1741 const struct cred *cred,
1747 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1754 #endif /* CONFIG_KEYS */
1757 #ifdef CONFIG_SECURITY
1758 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1759 int security_audit_rule_known(struct audit_krule *krule);
1760 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule);
1761 void security_audit_rule_free(void *lsmrule);
1765 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1771 static inline int security_audit_rule_known(struct audit_krule *krule)
1776 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1782 static inline void security_audit_rule_free(void *lsmrule)
1785 #endif /* CONFIG_SECURITY */
1786 #endif /* CONFIG_AUDIT */
1788 #ifdef CONFIG_SECURITYFS
1790 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1791 struct dentry *parent, void *data,
1792 const struct file_operations *fops);
1793 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1794 struct dentry *securityfs_create_symlink(const char *name,
1795 struct dentry *parent,
1797 const struct inode_operations *iops);
1798 extern void securityfs_remove(struct dentry *dentry);
1800 #else /* CONFIG_SECURITYFS */
1802 static inline struct dentry *securityfs_create_dir(const char *name,
1803 struct dentry *parent)
1805 return ERR_PTR(-ENODEV);
1808 static inline struct dentry *securityfs_create_file(const char *name,
1810 struct dentry *parent,
1812 const struct file_operations *fops)
1814 return ERR_PTR(-ENODEV);
1817 static inline struct dentry *securityfs_create_symlink(const char *name,
1818 struct dentry *parent,
1820 const struct inode_operations *iops)
1822 return ERR_PTR(-ENODEV);
1825 static inline void securityfs_remove(struct dentry *dentry)
1830 #ifdef CONFIG_BPF_SYSCALL
1834 struct bpf_prog_aux;
1835 #ifdef CONFIG_SECURITY
1836 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1837 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1838 extern int security_bpf_prog(struct bpf_prog *prog);
1839 extern int security_bpf_map_alloc(struct bpf_map *map);
1840 extern void security_bpf_map_free(struct bpf_map *map);
1841 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1842 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1844 static inline int security_bpf(int cmd, union bpf_attr *attr,
1850 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1855 static inline int security_bpf_prog(struct bpf_prog *prog)
1860 static inline int security_bpf_map_alloc(struct bpf_map *map)
1865 static inline void security_bpf_map_free(struct bpf_map *map)
1868 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1873 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1875 #endif /* CONFIG_SECURITY */
1876 #endif /* CONFIG_BPF_SYSCALL */
1878 #endif /* ! __LINUX_SECURITY_H */