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;
80 /* These functions are in security/commoncap.c */
81 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
82 int cap, unsigned int opts);
83 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
84 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
85 extern int cap_ptrace_traceme(struct task_struct *parent);
86 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
87 extern int cap_capset(struct cred *new, const struct cred *old,
88 const kernel_cap_t *effective,
89 const kernel_cap_t *inheritable,
90 const kernel_cap_t *permitted);
91 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
92 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
93 const void *value, size_t size, int flags);
94 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
95 extern int cap_inode_need_killpriv(struct dentry *dentry);
96 extern int cap_inode_killpriv(struct dentry *dentry);
97 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
98 void **buffer, bool alloc);
99 extern int cap_mmap_addr(unsigned long addr);
100 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
101 unsigned long prot, unsigned long flags);
102 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
103 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
104 unsigned long arg4, unsigned long arg5);
105 extern int cap_task_setscheduler(struct task_struct *p);
106 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
107 extern int cap_task_setnice(struct task_struct *p, int nice);
108 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
117 struct xfrm_selector;
120 struct xfrm_user_sec_ctx;
122 struct sctp_endpoint;
125 extern unsigned long mmap_min_addr;
126 extern unsigned long dac_mmap_min_addr;
128 #define mmap_min_addr 0UL
129 #define dac_mmap_min_addr 0UL
133 * Values used in the task_security_ops calls
135 /* setuid or setgid, id0 == uid or gid */
136 #define LSM_SETID_ID 1
138 /* setreuid or setregid, id0 == real, id1 == eff */
139 #define LSM_SETID_RE 2
141 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
142 #define LSM_SETID_RES 4
144 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
145 #define LSM_SETID_FS 8
147 /* Flags for security_task_prlimit(). */
148 #define LSM_PRLIMIT_READ 1
149 #define LSM_PRLIMIT_WRITE 2
151 /* forward declares to avoid warnings */
155 /* bprm->unsafe reasons */
156 #define LSM_UNSAFE_SHARE 1
157 #define LSM_UNSAFE_PTRACE 2
158 #define LSM_UNSAFE_NO_NEW_PRIVS 4
161 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
162 void __user *buffer, size_t *lenp, loff_t *ppos);
165 /* security_inode_init_security callback function to write xattrs */
166 typedef int (*initxattrs) (struct inode *inode,
167 const struct xattr *xattr_array, void *fs_data);
170 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */
171 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM,
172 #define __data_id_stringify(dummy, str) #str,
174 enum kernel_load_data_id {
175 __kernel_read_file_id(__data_id_enumify)
178 static const char * const kernel_load_data_str[] = {
179 __kernel_read_file_id(__data_id_stringify)
182 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
184 if ((unsigned)id >= LOADING_MAX_ID)
185 return kernel_load_data_str[LOADING_UNKNOWN];
187 return kernel_load_data_str[id];
190 #ifdef CONFIG_SECURITY
192 int call_lsm_notifier(enum lsm_event event, void *data);
193 int register_lsm_notifier(struct notifier_block *nb);
194 int unregister_lsm_notifier(struct notifier_block *nb);
197 extern int security_init(void);
199 /* Security operations */
200 int security_binder_set_context_mgr(struct task_struct *mgr);
201 int security_binder_transaction(struct task_struct *from,
202 struct task_struct *to);
203 int security_binder_transfer_binder(struct task_struct *from,
204 struct task_struct *to);
205 int security_binder_transfer_file(struct task_struct *from,
206 struct task_struct *to, struct file *file);
207 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
208 int security_ptrace_traceme(struct task_struct *parent);
209 int security_capget(struct task_struct *target,
210 kernel_cap_t *effective,
211 kernel_cap_t *inheritable,
212 kernel_cap_t *permitted);
213 int security_capset(struct cred *new, const struct cred *old,
214 const kernel_cap_t *effective,
215 const kernel_cap_t *inheritable,
216 const kernel_cap_t *permitted);
217 int security_capable(const struct cred *cred,
218 struct user_namespace *ns,
221 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
222 int security_quota_on(struct dentry *dentry);
223 int security_syslog(int type);
224 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
225 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
226 int security_bprm_set_creds(struct linux_binprm *bprm);
227 int security_bprm_check(struct linux_binprm *bprm);
228 void security_bprm_committing_creds(struct linux_binprm *bprm);
229 void security_bprm_committed_creds(struct linux_binprm *bprm);
230 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc);
231 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param);
232 int security_sb_alloc(struct super_block *sb);
233 void security_sb_free(struct super_block *sb);
234 void security_free_mnt_opts(void **mnt_opts);
235 int security_sb_eat_lsm_opts(char *options, void **mnt_opts);
236 int security_sb_remount(struct super_block *sb, void *mnt_opts);
237 int security_sb_kern_mount(struct super_block *sb);
238 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
239 int security_sb_statfs(struct dentry *dentry);
240 int security_sb_mount(const char *dev_name, const struct path *path,
241 const char *type, unsigned long flags, void *data);
242 int security_sb_umount(struct vfsmount *mnt, int flags);
243 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
244 int security_sb_set_mnt_opts(struct super_block *sb,
246 unsigned long kern_flags,
247 unsigned long *set_kern_flags);
248 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
249 struct super_block *newsb,
250 unsigned long kern_flags,
251 unsigned long *set_kern_flags);
252 int security_add_mnt_opt(const char *option, const char *val,
253 int len, void **mnt_opts);
254 int security_move_mount(const struct path *from_path, const struct path *to_path);
255 int security_dentry_init_security(struct dentry *dentry, int mode,
256 const struct qstr *name, void **ctx,
258 int security_dentry_create_files_as(struct dentry *dentry, int mode,
260 const struct cred *old,
263 int security_inode_alloc(struct inode *inode);
264 void security_inode_free(struct inode *inode);
265 int security_inode_init_security(struct inode *inode, struct inode *dir,
266 const struct qstr *qstr,
267 initxattrs initxattrs, void *fs_data);
268 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
269 const struct qstr *qstr, const char **name,
270 void **value, size_t *len);
271 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
272 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
273 struct dentry *new_dentry);
274 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
275 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
276 const char *old_name);
277 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
278 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
279 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
280 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
281 struct inode *new_dir, struct dentry *new_dentry,
283 int security_inode_readlink(struct dentry *dentry);
284 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
286 int security_inode_permission(struct inode *inode, int mask);
287 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
288 int security_inode_getattr(const struct path *path);
289 int security_inode_setxattr(struct dentry *dentry, const char *name,
290 const void *value, size_t size, int flags);
291 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
292 const void *value, size_t size, int flags);
293 int security_inode_getxattr(struct dentry *dentry, const char *name);
294 int security_inode_listxattr(struct dentry *dentry);
295 int security_inode_removexattr(struct dentry *dentry, const char *name);
296 int security_inode_need_killpriv(struct dentry *dentry);
297 int security_inode_killpriv(struct dentry *dentry);
298 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
299 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
300 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
301 void security_inode_getsecid(struct inode *inode, u32 *secid);
302 int security_inode_copy_up(struct dentry *src, struct cred **new);
303 int security_inode_copy_up_xattr(const char *name);
304 int security_kernfs_init_security(struct kernfs_node *kn_dir,
305 struct kernfs_node *kn);
306 int security_file_permission(struct file *file, int mask);
307 int security_file_alloc(struct file *file);
308 void security_file_free(struct file *file);
309 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
310 int security_mmap_file(struct file *file, unsigned long prot,
311 unsigned long flags);
312 int security_mmap_addr(unsigned long addr);
313 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
315 int security_file_lock(struct file *file, unsigned int cmd);
316 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
317 void security_file_set_fowner(struct file *file);
318 int security_file_send_sigiotask(struct task_struct *tsk,
319 struct fown_struct *fown, int sig);
320 int security_file_receive(struct file *file);
321 int security_file_open(struct file *file);
322 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
323 void security_task_free(struct task_struct *task);
324 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
325 void security_cred_free(struct cred *cred);
326 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
327 void security_transfer_creds(struct cred *new, const struct cred *old);
328 void security_cred_getsecid(const struct cred *c, u32 *secid);
329 int security_kernel_act_as(struct cred *new, u32 secid);
330 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
331 int security_kernel_module_request(char *kmod_name);
332 int security_kernel_load_data(enum kernel_load_data_id id);
333 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
334 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
335 enum kernel_read_file_id id);
336 int security_task_fix_setuid(struct cred *new, const struct cred *old,
338 int security_task_setpgid(struct task_struct *p, pid_t pgid);
339 int security_task_getpgid(struct task_struct *p);
340 int security_task_getsid(struct task_struct *p);
341 void security_task_getsecid(struct task_struct *p, u32 *secid);
342 int security_task_setnice(struct task_struct *p, int nice);
343 int security_task_setioprio(struct task_struct *p, int ioprio);
344 int security_task_getioprio(struct task_struct *p);
345 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
347 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
348 struct rlimit *new_rlim);
349 int security_task_setscheduler(struct task_struct *p);
350 int security_task_getscheduler(struct task_struct *p);
351 int security_task_movememory(struct task_struct *p);
352 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
353 int sig, const struct cred *cred);
354 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
355 unsigned long arg4, unsigned long arg5);
356 void security_task_to_inode(struct task_struct *p, struct inode *inode);
357 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
358 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
359 int security_msg_msg_alloc(struct msg_msg *msg);
360 void security_msg_msg_free(struct msg_msg *msg);
361 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
362 void security_msg_queue_free(struct kern_ipc_perm *msq);
363 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
364 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
365 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
366 struct msg_msg *msg, int msqflg);
367 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
368 struct task_struct *target, long type, int mode);
369 int security_shm_alloc(struct kern_ipc_perm *shp);
370 void security_shm_free(struct kern_ipc_perm *shp);
371 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
372 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
373 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
374 int security_sem_alloc(struct kern_ipc_perm *sma);
375 void security_sem_free(struct kern_ipc_perm *sma);
376 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
377 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
378 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
379 unsigned nsops, int alter);
380 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
381 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
383 int security_setprocattr(const char *lsm, const char *name, void *value,
385 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
386 int security_ismaclabel(const char *name);
387 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
388 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
389 void security_release_secctx(char *secdata, u32 seclen);
391 void security_inode_invalidate_secctx(struct inode *inode);
392 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
393 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
394 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
395 #else /* CONFIG_SECURITY */
397 static inline int call_lsm_notifier(enum lsm_event event, void *data)
402 static inline int register_lsm_notifier(struct notifier_block *nb)
407 static inline int unregister_lsm_notifier(struct notifier_block *nb)
412 static inline void security_free_mnt_opts(void **mnt_opts)
417 * This is the default capabilities functionality. Most of these functions
418 * are just stubbed out, but a few must call the proper capable code.
421 static inline int security_init(void)
426 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
431 static inline int security_binder_transaction(struct task_struct *from,
432 struct task_struct *to)
437 static inline int security_binder_transfer_binder(struct task_struct *from,
438 struct task_struct *to)
443 static inline int security_binder_transfer_file(struct task_struct *from,
444 struct task_struct *to,
450 static inline int security_ptrace_access_check(struct task_struct *child,
453 return cap_ptrace_access_check(child, mode);
456 static inline int security_ptrace_traceme(struct task_struct *parent)
458 return cap_ptrace_traceme(parent);
461 static inline int security_capget(struct task_struct *target,
462 kernel_cap_t *effective,
463 kernel_cap_t *inheritable,
464 kernel_cap_t *permitted)
466 return cap_capget(target, effective, inheritable, permitted);
469 static inline int security_capset(struct cred *new,
470 const struct cred *old,
471 const kernel_cap_t *effective,
472 const kernel_cap_t *inheritable,
473 const kernel_cap_t *permitted)
475 return cap_capset(new, old, effective, inheritable, permitted);
478 static inline int security_capable(const struct cred *cred,
479 struct user_namespace *ns,
483 return cap_capable(cred, ns, cap, opts);
486 static inline int security_quotactl(int cmds, int type, int id,
487 struct super_block *sb)
492 static inline int security_quota_on(struct dentry *dentry)
497 static inline int security_syslog(int type)
502 static inline int security_settime64(const struct timespec64 *ts,
503 const struct timezone *tz)
505 return cap_settime(ts, tz);
508 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
510 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
513 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
515 return cap_bprm_set_creds(bprm);
518 static inline int security_bprm_check(struct linux_binprm *bprm)
523 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
527 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
531 static inline int security_fs_context_dup(struct fs_context *fc,
532 struct fs_context *src_fc)
536 static inline int security_fs_context_parse_param(struct fs_context *fc,
537 struct fs_parameter *param)
542 static inline int security_sb_alloc(struct super_block *sb)
547 static inline void security_sb_free(struct super_block *sb)
550 static inline int security_sb_eat_lsm_opts(char *options,
556 static inline int security_sb_remount(struct super_block *sb,
562 static inline int security_sb_kern_mount(struct super_block *sb)
567 static inline int security_sb_show_options(struct seq_file *m,
568 struct super_block *sb)
573 static inline int security_sb_statfs(struct dentry *dentry)
578 static inline int security_sb_mount(const char *dev_name, const struct path *path,
579 const char *type, unsigned long flags,
585 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
590 static inline int security_sb_pivotroot(const struct path *old_path,
591 const struct path *new_path)
596 static inline int security_sb_set_mnt_opts(struct super_block *sb,
598 unsigned long kern_flags,
599 unsigned long *set_kern_flags)
604 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
605 struct super_block *newsb,
606 unsigned long kern_flags,
607 unsigned long *set_kern_flags)
612 static inline int security_add_mnt_opt(const char *option, const char *val,
613 int len, void **mnt_opts)
618 static inline int security_move_mount(const struct path *from_path,
619 const struct path *to_path)
624 static inline int security_inode_alloc(struct inode *inode)
629 static inline void security_inode_free(struct inode *inode)
632 static inline int security_dentry_init_security(struct dentry *dentry,
634 const struct qstr *name,
641 static inline int security_dentry_create_files_as(struct dentry *dentry,
642 int mode, struct qstr *name,
643 const struct cred *old,
650 static inline int security_inode_init_security(struct inode *inode,
652 const struct qstr *qstr,
653 const initxattrs xattrs,
659 static inline int security_old_inode_init_security(struct inode *inode,
661 const struct qstr *qstr,
663 void **value, size_t *len)
668 static inline int security_inode_create(struct inode *dir,
669 struct dentry *dentry,
675 static inline int security_inode_link(struct dentry *old_dentry,
677 struct dentry *new_dentry)
682 static inline int security_inode_unlink(struct inode *dir,
683 struct dentry *dentry)
688 static inline int security_inode_symlink(struct inode *dir,
689 struct dentry *dentry,
690 const char *old_name)
695 static inline int security_inode_mkdir(struct inode *dir,
696 struct dentry *dentry,
702 static inline int security_inode_rmdir(struct inode *dir,
703 struct dentry *dentry)
708 static inline int security_inode_mknod(struct inode *dir,
709 struct dentry *dentry,
715 static inline int security_inode_rename(struct inode *old_dir,
716 struct dentry *old_dentry,
717 struct inode *new_dir,
718 struct dentry *new_dentry,
724 static inline int security_inode_readlink(struct dentry *dentry)
729 static inline int security_inode_follow_link(struct dentry *dentry,
736 static inline int security_inode_permission(struct inode *inode, int mask)
741 static inline int security_inode_setattr(struct dentry *dentry,
747 static inline int security_inode_getattr(const struct path *path)
752 static inline int security_inode_setxattr(struct dentry *dentry,
753 const char *name, const void *value, size_t size, int flags)
755 return cap_inode_setxattr(dentry, name, value, size, flags);
758 static inline void security_inode_post_setxattr(struct dentry *dentry,
759 const char *name, const void *value, size_t size, int flags)
762 static inline int security_inode_getxattr(struct dentry *dentry,
768 static inline int security_inode_listxattr(struct dentry *dentry)
773 static inline int security_inode_removexattr(struct dentry *dentry,
776 return cap_inode_removexattr(dentry, name);
779 static inline int security_inode_need_killpriv(struct dentry *dentry)
781 return cap_inode_need_killpriv(dentry);
784 static inline int security_inode_killpriv(struct dentry *dentry)
786 return cap_inode_killpriv(dentry);
789 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
794 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
799 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
804 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
809 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
814 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir,
815 struct kernfs_node *kn)
820 static inline int security_inode_copy_up_xattr(const char *name)
825 static inline int security_file_permission(struct file *file, int mask)
830 static inline int security_file_alloc(struct file *file)
835 static inline void security_file_free(struct file *file)
838 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
844 static inline int security_mmap_file(struct file *file, unsigned long prot,
850 static inline int security_mmap_addr(unsigned long addr)
852 return cap_mmap_addr(addr);
855 static inline int security_file_mprotect(struct vm_area_struct *vma,
856 unsigned long reqprot,
862 static inline int security_file_lock(struct file *file, unsigned int cmd)
867 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
873 static inline void security_file_set_fowner(struct file *file)
878 static inline int security_file_send_sigiotask(struct task_struct *tsk,
879 struct fown_struct *fown,
885 static inline int security_file_receive(struct file *file)
890 static inline int security_file_open(struct file *file)
895 static inline int security_task_alloc(struct task_struct *task,
896 unsigned long clone_flags)
901 static inline void security_task_free(struct task_struct *task)
904 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
909 static inline void security_cred_free(struct cred *cred)
912 static inline int security_prepare_creds(struct cred *new,
913 const struct cred *old,
919 static inline void security_transfer_creds(struct cred *new,
920 const struct cred *old)
924 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
929 static inline int security_kernel_create_files_as(struct cred *cred,
935 static inline int security_kernel_module_request(char *kmod_name)
940 static inline int security_kernel_load_data(enum kernel_load_data_id id)
945 static inline int security_kernel_read_file(struct file *file,
946 enum kernel_read_file_id id)
951 static inline int security_kernel_post_read_file(struct file *file,
952 char *buf, loff_t size,
953 enum kernel_read_file_id id)
958 static inline int security_task_fix_setuid(struct cred *new,
959 const struct cred *old,
962 return cap_task_fix_setuid(new, old, flags);
965 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
970 static inline int security_task_getpgid(struct task_struct *p)
975 static inline int security_task_getsid(struct task_struct *p)
980 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
985 static inline int security_task_setnice(struct task_struct *p, int nice)
987 return cap_task_setnice(p, nice);
990 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
992 return cap_task_setioprio(p, ioprio);
995 static inline int security_task_getioprio(struct task_struct *p)
1000 static inline int security_task_prlimit(const struct cred *cred,
1001 const struct cred *tcred,
1007 static inline int security_task_setrlimit(struct task_struct *p,
1008 unsigned int resource,
1009 struct rlimit *new_rlim)
1014 static inline int security_task_setscheduler(struct task_struct *p)
1016 return cap_task_setscheduler(p);
1019 static inline int security_task_getscheduler(struct task_struct *p)
1024 static inline int security_task_movememory(struct task_struct *p)
1029 static inline int security_task_kill(struct task_struct *p,
1030 struct kernel_siginfo *info, int sig,
1031 const struct cred *cred)
1036 static inline int security_task_prctl(int option, unsigned long arg2,
1041 return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1044 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1047 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1053 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1058 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1063 static inline void security_msg_msg_free(struct msg_msg *msg)
1066 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1071 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1074 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1080 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1085 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1086 struct msg_msg *msg, int msqflg)
1091 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1092 struct msg_msg *msg,
1093 struct task_struct *target,
1094 long type, int mode)
1099 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1104 static inline void security_shm_free(struct kern_ipc_perm *shp)
1107 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1113 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1118 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1119 char __user *shmaddr, int shmflg)
1124 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1129 static inline void security_sem_free(struct kern_ipc_perm *sma)
1132 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1137 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1142 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1143 struct sembuf *sops, unsigned nsops,
1149 static inline void security_d_instantiate(struct dentry *dentry,
1150 struct inode *inode)
1153 static inline int security_getprocattr(struct task_struct *p, const char *lsm,
1154 char *name, char **value)
1159 static inline int security_setprocattr(const char *lsm, char *name,
1160 void *value, size_t size)
1165 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1170 static inline int security_ismaclabel(const char *name)
1175 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1180 static inline int security_secctx_to_secid(const char *secdata,
1187 static inline void security_release_secctx(char *secdata, u32 seclen)
1191 static inline void security_inode_invalidate_secctx(struct inode *inode)
1195 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1199 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1203 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1207 #endif /* CONFIG_SECURITY */
1209 #ifdef CONFIG_SECURITY_NETWORK
1211 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1212 int security_unix_may_send(struct socket *sock, struct socket *other);
1213 int security_socket_create(int family, int type, int protocol, int kern);
1214 int security_socket_post_create(struct socket *sock, int family,
1215 int type, int protocol, int kern);
1216 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1217 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1218 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1219 int security_socket_listen(struct socket *sock, int backlog);
1220 int security_socket_accept(struct socket *sock, struct socket *newsock);
1221 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1222 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1223 int size, int flags);
1224 int security_socket_getsockname(struct socket *sock);
1225 int security_socket_getpeername(struct socket *sock);
1226 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1227 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1228 int security_socket_shutdown(struct socket *sock, int how);
1229 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1230 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1231 int __user *optlen, unsigned len);
1232 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1233 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1234 void security_sk_free(struct sock *sk);
1235 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1236 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1237 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1238 void security_sock_graft(struct sock*sk, struct socket *parent);
1239 int security_inet_conn_request(struct sock *sk,
1240 struct sk_buff *skb, struct request_sock *req);
1241 void security_inet_csk_clone(struct sock *newsk,
1242 const struct request_sock *req);
1243 void security_inet_conn_established(struct sock *sk,
1244 struct sk_buff *skb);
1245 int security_secmark_relabel_packet(u32 secid);
1246 void security_secmark_refcount_inc(void);
1247 void security_secmark_refcount_dec(void);
1248 int security_tun_dev_alloc_security(void **security);
1249 void security_tun_dev_free_security(void *security);
1250 int security_tun_dev_create(void);
1251 int security_tun_dev_attach_queue(void *security);
1252 int security_tun_dev_attach(struct sock *sk, void *security);
1253 int security_tun_dev_open(void *security);
1254 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1255 int security_sctp_bind_connect(struct sock *sk, int optname,
1256 struct sockaddr *address, int addrlen);
1257 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1258 struct sock *newsk);
1260 #else /* CONFIG_SECURITY_NETWORK */
1261 static inline int security_unix_stream_connect(struct sock *sock,
1268 static inline int security_unix_may_send(struct socket *sock,
1269 struct socket *other)
1274 static inline int security_socket_create(int family, int type,
1275 int protocol, int kern)
1280 static inline int security_socket_post_create(struct socket *sock,
1283 int protocol, int kern)
1288 static inline int security_socket_socketpair(struct socket *socka,
1289 struct socket *sockb)
1294 static inline int security_socket_bind(struct socket *sock,
1295 struct sockaddr *address,
1301 static inline int security_socket_connect(struct socket *sock,
1302 struct sockaddr *address,
1308 static inline int security_socket_listen(struct socket *sock, int backlog)
1313 static inline int security_socket_accept(struct socket *sock,
1314 struct socket *newsock)
1319 static inline int security_socket_sendmsg(struct socket *sock,
1320 struct msghdr *msg, int size)
1325 static inline int security_socket_recvmsg(struct socket *sock,
1326 struct msghdr *msg, int size,
1332 static inline int security_socket_getsockname(struct socket *sock)
1337 static inline int security_socket_getpeername(struct socket *sock)
1342 static inline int security_socket_getsockopt(struct socket *sock,
1343 int level, int optname)
1348 static inline int security_socket_setsockopt(struct socket *sock,
1349 int level, int optname)
1354 static inline int security_socket_shutdown(struct socket *sock, int how)
1358 static inline int security_sock_rcv_skb(struct sock *sk,
1359 struct sk_buff *skb)
1364 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1365 int __user *optlen, unsigned len)
1367 return -ENOPROTOOPT;
1370 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1372 return -ENOPROTOOPT;
1375 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1380 static inline void security_sk_free(struct sock *sk)
1384 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1388 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1392 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1396 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1400 static inline int security_inet_conn_request(struct sock *sk,
1401 struct sk_buff *skb, struct request_sock *req)
1406 static inline void security_inet_csk_clone(struct sock *newsk,
1407 const struct request_sock *req)
1411 static inline void security_inet_conn_established(struct sock *sk,
1412 struct sk_buff *skb)
1416 static inline int security_secmark_relabel_packet(u32 secid)
1421 static inline void security_secmark_refcount_inc(void)
1425 static inline void security_secmark_refcount_dec(void)
1429 static inline int security_tun_dev_alloc_security(void **security)
1434 static inline void security_tun_dev_free_security(void *security)
1438 static inline int security_tun_dev_create(void)
1443 static inline int security_tun_dev_attach_queue(void *security)
1448 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1453 static inline int security_tun_dev_open(void *security)
1458 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1459 struct sk_buff *skb)
1464 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1465 struct sockaddr *address,
1471 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1476 #endif /* CONFIG_SECURITY_NETWORK */
1478 #ifdef CONFIG_SECURITY_INFINIBAND
1479 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1480 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1481 int security_ib_alloc_security(void **sec);
1482 void security_ib_free_security(void *sec);
1483 #else /* CONFIG_SECURITY_INFINIBAND */
1484 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1489 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1494 static inline int security_ib_alloc_security(void **sec)
1499 static inline void security_ib_free_security(void *sec)
1502 #endif /* CONFIG_SECURITY_INFINIBAND */
1504 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1506 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1507 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1508 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1509 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1510 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1511 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1512 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1513 struct xfrm_sec_ctx *polsec, u32 secid);
1514 int security_xfrm_state_delete(struct xfrm_state *x);
1515 void security_xfrm_state_free(struct xfrm_state *x);
1516 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1517 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1518 struct xfrm_policy *xp,
1519 const struct flowi *fl);
1520 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1521 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1523 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1525 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1526 struct xfrm_user_sec_ctx *sec_ctx,
1532 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1537 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1541 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1546 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1547 struct xfrm_user_sec_ctx *sec_ctx)
1552 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1553 struct xfrm_sec_ctx *polsec, u32 secid)
1558 static inline void security_xfrm_state_free(struct xfrm_state *x)
1562 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1567 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1572 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1573 struct xfrm_policy *xp, const struct flowi *fl)
1578 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1583 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1587 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1589 #ifdef CONFIG_SECURITY_PATH
1590 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1591 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1592 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1593 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1595 int security_path_truncate(const struct path *path);
1596 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1597 const char *old_name);
1598 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1599 struct dentry *new_dentry);
1600 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1601 const struct path *new_dir, struct dentry *new_dentry,
1602 unsigned int flags);
1603 int security_path_chmod(const struct path *path, umode_t mode);
1604 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1605 int security_path_chroot(const struct path *path);
1606 #else /* CONFIG_SECURITY_PATH */
1607 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1612 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1618 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1623 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1624 umode_t mode, unsigned int dev)
1629 static inline int security_path_truncate(const struct path *path)
1634 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1635 const char *old_name)
1640 static inline int security_path_link(struct dentry *old_dentry,
1641 const struct path *new_dir,
1642 struct dentry *new_dentry)
1647 static inline int security_path_rename(const struct path *old_dir,
1648 struct dentry *old_dentry,
1649 const struct path *new_dir,
1650 struct dentry *new_dentry,
1656 static inline int security_path_chmod(const struct path *path, umode_t mode)
1661 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1666 static inline int security_path_chroot(const struct path *path)
1670 #endif /* CONFIG_SECURITY_PATH */
1673 #ifdef CONFIG_SECURITY
1675 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1676 void security_key_free(struct key *key);
1677 int security_key_permission(key_ref_t key_ref,
1678 const struct cred *cred, unsigned perm);
1679 int security_key_getsecurity(struct key *key, char **_buffer);
1683 static inline int security_key_alloc(struct key *key,
1684 const struct cred *cred,
1685 unsigned long flags)
1690 static inline void security_key_free(struct key *key)
1694 static inline int security_key_permission(key_ref_t key_ref,
1695 const struct cred *cred,
1701 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1708 #endif /* CONFIG_KEYS */
1711 #ifdef CONFIG_SECURITY
1712 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1713 int security_audit_rule_known(struct audit_krule *krule);
1714 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule);
1715 void security_audit_rule_free(void *lsmrule);
1719 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1725 static inline int security_audit_rule_known(struct audit_krule *krule)
1730 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1736 static inline void security_audit_rule_free(void *lsmrule)
1739 #endif /* CONFIG_SECURITY */
1740 #endif /* CONFIG_AUDIT */
1742 #ifdef CONFIG_SECURITYFS
1744 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1745 struct dentry *parent, void *data,
1746 const struct file_operations *fops);
1747 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1748 struct dentry *securityfs_create_symlink(const char *name,
1749 struct dentry *parent,
1751 const struct inode_operations *iops);
1752 extern void securityfs_remove(struct dentry *dentry);
1754 #else /* CONFIG_SECURITYFS */
1756 static inline struct dentry *securityfs_create_dir(const char *name,
1757 struct dentry *parent)
1759 return ERR_PTR(-ENODEV);
1762 static inline struct dentry *securityfs_create_file(const char *name,
1764 struct dentry *parent,
1766 const struct file_operations *fops)
1768 return ERR_PTR(-ENODEV);
1771 static inline struct dentry *securityfs_create_symlink(const char *name,
1772 struct dentry *parent,
1774 const struct inode_operations *iops)
1776 return ERR_PTR(-ENODEV);
1779 static inline void securityfs_remove(struct dentry *dentry)
1784 #ifdef CONFIG_BPF_SYSCALL
1788 struct bpf_prog_aux;
1789 #ifdef CONFIG_SECURITY
1790 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1791 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1792 extern int security_bpf_prog(struct bpf_prog *prog);
1793 extern int security_bpf_map_alloc(struct bpf_map *map);
1794 extern void security_bpf_map_free(struct bpf_map *map);
1795 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1796 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1798 static inline int security_bpf(int cmd, union bpf_attr *attr,
1804 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1809 static inline int security_bpf_prog(struct bpf_prog *prog)
1814 static inline int security_bpf_map_alloc(struct bpf_map *map)
1819 static inline void security_bpf_map_free(struct bpf_map *map)
1822 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1827 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1829 #endif /* CONFIG_SECURITY */
1830 #endif /* CONFIG_BPF_SYSCALL */
1832 #endif /* ! __LINUX_SECURITY_H */