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;
57 /* If capable should audit the security request */
58 #define SECURITY_CAP_NOAUDIT 0
59 #define SECURITY_CAP_AUDIT 1
61 /* LSM Agnostic defines for sb_set_mnt_opts */
62 #define SECURITY_LSM_NATIVE_LABELS 1
66 struct user_namespace;
73 /* These functions are in security/commoncap.c */
74 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
76 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
77 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
78 extern int cap_ptrace_traceme(struct task_struct *parent);
79 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
80 extern int cap_capset(struct cred *new, const struct cred *old,
81 const kernel_cap_t *effective,
82 const kernel_cap_t *inheritable,
83 const kernel_cap_t *permitted);
84 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
85 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
86 const void *value, size_t size, int flags);
87 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
88 extern int cap_inode_need_killpriv(struct dentry *dentry);
89 extern int cap_inode_killpriv(struct dentry *dentry);
90 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
91 void **buffer, bool alloc);
92 extern int cap_mmap_addr(unsigned long addr);
93 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
94 unsigned long prot, unsigned long flags);
95 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
96 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
97 unsigned long arg4, unsigned long arg5);
98 extern int cap_task_setscheduler(struct task_struct *p);
99 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
100 extern int cap_task_setnice(struct task_struct *p, int nice);
101 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
110 struct xfrm_selector;
113 struct xfrm_user_sec_ctx;
115 struct sctp_endpoint;
118 extern unsigned long mmap_min_addr;
119 extern unsigned long dac_mmap_min_addr;
121 #define mmap_min_addr 0UL
122 #define dac_mmap_min_addr 0UL
126 * Values used in the task_security_ops calls
128 /* setuid or setgid, id0 == uid or gid */
129 #define LSM_SETID_ID 1
131 /* setreuid or setregid, id0 == real, id1 == eff */
132 #define LSM_SETID_RE 2
134 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
135 #define LSM_SETID_RES 4
137 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
138 #define LSM_SETID_FS 8
140 /* Flags for security_task_prlimit(). */
141 #define LSM_PRLIMIT_READ 1
142 #define LSM_PRLIMIT_WRITE 2
144 /* forward declares to avoid warnings */
148 /* bprm->unsafe reasons */
149 #define LSM_UNSAFE_SHARE 1
150 #define LSM_UNSAFE_PTRACE 2
151 #define LSM_UNSAFE_NO_NEW_PRIVS 4
154 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
155 void __user *buffer, size_t *lenp, loff_t *ppos);
158 /* security_inode_init_security callback function to write xattrs */
159 typedef int (*initxattrs) (struct inode *inode,
160 const struct xattr *xattr_array, void *fs_data);
163 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */
164 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM,
165 #define __data_id_stringify(dummy, str) #str,
167 enum kernel_load_data_id {
168 __kernel_read_file_id(__data_id_enumify)
171 static const char * const kernel_load_data_str[] = {
172 __kernel_read_file_id(__data_id_stringify)
175 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
177 if ((unsigned)id >= LOADING_MAX_ID)
178 return kernel_load_data_str[LOADING_UNKNOWN];
180 return kernel_load_data_str[id];
183 #ifdef CONFIG_SECURITY
185 int call_lsm_notifier(enum lsm_event event, void *data);
186 int register_lsm_notifier(struct notifier_block *nb);
187 int unregister_lsm_notifier(struct notifier_block *nb);
190 extern int security_init(void);
192 /* Security operations */
193 int security_binder_set_context_mgr(struct task_struct *mgr);
194 int security_binder_transaction(struct task_struct *from,
195 struct task_struct *to);
196 int security_binder_transfer_binder(struct task_struct *from,
197 struct task_struct *to);
198 int security_binder_transfer_file(struct task_struct *from,
199 struct task_struct *to, struct file *file);
200 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
201 int security_ptrace_traceme(struct task_struct *parent);
202 int security_capget(struct task_struct *target,
203 kernel_cap_t *effective,
204 kernel_cap_t *inheritable,
205 kernel_cap_t *permitted);
206 int security_capset(struct cred *new, const struct cred *old,
207 const kernel_cap_t *effective,
208 const kernel_cap_t *inheritable,
209 const kernel_cap_t *permitted);
210 int security_capable(const struct cred *cred, struct user_namespace *ns,
212 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
214 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
215 int security_quota_on(struct dentry *dentry);
216 int security_syslog(int type);
217 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
218 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
219 int security_bprm_set_creds(struct linux_binprm *bprm);
220 int security_bprm_check(struct linux_binprm *bprm);
221 void security_bprm_committing_creds(struct linux_binprm *bprm);
222 void security_bprm_committed_creds(struct linux_binprm *bprm);
223 int security_sb_alloc(struct super_block *sb);
224 void security_sb_free(struct super_block *sb);
225 void security_free_mnt_opts(void **mnt_opts);
226 int security_sb_eat_lsm_opts(char *options, void **mnt_opts);
227 int security_sb_remount(struct super_block *sb, void *mnt_opts);
228 int security_sb_kern_mount(struct super_block *sb);
229 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
230 int security_sb_statfs(struct dentry *dentry);
231 int security_sb_mount(const char *dev_name, const struct path *path,
232 const char *type, unsigned long flags, void *data);
233 int security_sb_umount(struct vfsmount *mnt, int flags);
234 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
235 int security_sb_set_mnt_opts(struct super_block *sb,
237 unsigned long kern_flags,
238 unsigned long *set_kern_flags);
239 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
240 struct super_block *newsb,
241 unsigned long kern_flags,
242 unsigned long *set_kern_flags);
243 int security_add_mnt_opt(const char *option, const char *val,
244 int len, void **mnt_opts);
245 int security_dentry_init_security(struct dentry *dentry, int mode,
246 const struct qstr *name, void **ctx,
248 int security_dentry_create_files_as(struct dentry *dentry, int mode,
250 const struct cred *old,
253 int security_inode_alloc(struct inode *inode);
254 void security_inode_free(struct inode *inode);
255 int security_inode_init_security(struct inode *inode, struct inode *dir,
256 const struct qstr *qstr,
257 initxattrs initxattrs, void *fs_data);
258 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
259 const struct qstr *qstr, const char **name,
260 void **value, size_t *len);
261 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
262 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
263 struct dentry *new_dentry);
264 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
265 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
266 const char *old_name);
267 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
268 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
269 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
270 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
271 struct inode *new_dir, struct dentry *new_dentry,
273 int security_inode_readlink(struct dentry *dentry);
274 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
276 int security_inode_permission(struct inode *inode, int mask);
277 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
278 int security_inode_getattr(const struct path *path);
279 int security_inode_setxattr(struct dentry *dentry, const char *name,
280 const void *value, size_t size, int flags);
281 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
282 const void *value, size_t size, int flags);
283 int security_inode_getxattr(struct dentry *dentry, const char *name);
284 int security_inode_listxattr(struct dentry *dentry);
285 int security_inode_removexattr(struct dentry *dentry, const char *name);
286 int security_inode_need_killpriv(struct dentry *dentry);
287 int security_inode_killpriv(struct dentry *dentry);
288 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
289 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
290 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
291 void security_inode_getsecid(struct inode *inode, u32 *secid);
292 int security_inode_copy_up(struct dentry *src, struct cred **new);
293 int security_inode_copy_up_xattr(const char *name);
294 int security_file_permission(struct file *file, int mask);
295 int security_file_alloc(struct file *file);
296 void security_file_free(struct file *file);
297 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
298 int security_mmap_file(struct file *file, unsigned long prot,
299 unsigned long flags);
300 int security_mmap_addr(unsigned long addr);
301 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
303 int security_file_lock(struct file *file, unsigned int cmd);
304 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
305 void security_file_set_fowner(struct file *file);
306 int security_file_send_sigiotask(struct task_struct *tsk,
307 struct fown_struct *fown, int sig);
308 int security_file_receive(struct file *file);
309 int security_file_open(struct file *file);
310 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
311 void security_task_free(struct task_struct *task);
312 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
313 void security_cred_free(struct cred *cred);
314 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
315 void security_transfer_creds(struct cred *new, const struct cred *old);
316 void security_cred_getsecid(const struct cred *c, u32 *secid);
317 int security_kernel_act_as(struct cred *new, u32 secid);
318 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
319 int security_kernel_module_request(char *kmod_name);
320 int security_kernel_load_data(enum kernel_load_data_id id);
321 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
322 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
323 enum kernel_read_file_id id);
324 int security_task_fix_setuid(struct cred *new, const struct cred *old,
326 int security_task_setpgid(struct task_struct *p, pid_t pgid);
327 int security_task_getpgid(struct task_struct *p);
328 int security_task_getsid(struct task_struct *p);
329 void security_task_getsecid(struct task_struct *p, u32 *secid);
330 int security_task_setnice(struct task_struct *p, int nice);
331 int security_task_setioprio(struct task_struct *p, int ioprio);
332 int security_task_getioprio(struct task_struct *p);
333 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
335 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
336 struct rlimit *new_rlim);
337 int security_task_setscheduler(struct task_struct *p);
338 int security_task_getscheduler(struct task_struct *p);
339 int security_task_movememory(struct task_struct *p);
340 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
341 int sig, const struct cred *cred);
342 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
343 unsigned long arg4, unsigned long arg5);
344 void security_task_to_inode(struct task_struct *p, struct inode *inode);
345 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
346 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
347 int security_msg_msg_alloc(struct msg_msg *msg);
348 void security_msg_msg_free(struct msg_msg *msg);
349 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
350 void security_msg_queue_free(struct kern_ipc_perm *msq);
351 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
352 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
353 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
354 struct msg_msg *msg, int msqflg);
355 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
356 struct task_struct *target, long type, int mode);
357 int security_shm_alloc(struct kern_ipc_perm *shp);
358 void security_shm_free(struct kern_ipc_perm *shp);
359 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
360 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
361 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
362 int security_sem_alloc(struct kern_ipc_perm *sma);
363 void security_sem_free(struct kern_ipc_perm *sma);
364 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
365 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
366 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
367 unsigned nsops, int alter);
368 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
369 int security_getprocattr(struct task_struct *p, char *name, char **value);
370 int security_setprocattr(const char *name, void *value, size_t size);
371 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
372 int security_ismaclabel(const char *name);
373 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
374 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
375 void security_release_secctx(char *secdata, u32 seclen);
377 void security_inode_invalidate_secctx(struct inode *inode);
378 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
379 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
380 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
381 #else /* CONFIG_SECURITY */
383 static inline int call_lsm_notifier(enum lsm_event event, void *data)
388 static inline int register_lsm_notifier(struct notifier_block *nb)
393 static inline int unregister_lsm_notifier(struct notifier_block *nb)
398 static inline void security_free_mnt_opts(void **mnt_opts)
403 * This is the default capabilities functionality. Most of these functions
404 * are just stubbed out, but a few must call the proper capable code.
407 static inline int security_init(void)
412 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
417 static inline int security_binder_transaction(struct task_struct *from,
418 struct task_struct *to)
423 static inline int security_binder_transfer_binder(struct task_struct *from,
424 struct task_struct *to)
429 static inline int security_binder_transfer_file(struct task_struct *from,
430 struct task_struct *to,
436 static inline int security_ptrace_access_check(struct task_struct *child,
439 return cap_ptrace_access_check(child, mode);
442 static inline int security_ptrace_traceme(struct task_struct *parent)
444 return cap_ptrace_traceme(parent);
447 static inline int security_capget(struct task_struct *target,
448 kernel_cap_t *effective,
449 kernel_cap_t *inheritable,
450 kernel_cap_t *permitted)
452 return cap_capget(target, effective, inheritable, permitted);
455 static inline int security_capset(struct cred *new,
456 const struct cred *old,
457 const kernel_cap_t *effective,
458 const kernel_cap_t *inheritable,
459 const kernel_cap_t *permitted)
461 return cap_capset(new, old, effective, inheritable, permitted);
464 static inline int security_capable(const struct cred *cred,
465 struct user_namespace *ns, int cap)
467 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
470 static inline int security_capable_noaudit(const struct cred *cred,
471 struct user_namespace *ns, int cap) {
472 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
475 static inline int security_quotactl(int cmds, int type, int id,
476 struct super_block *sb)
481 static inline int security_quota_on(struct dentry *dentry)
486 static inline int security_syslog(int type)
491 static inline int security_settime64(const struct timespec64 *ts,
492 const struct timezone *tz)
494 return cap_settime(ts, tz);
497 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
499 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
502 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
504 return cap_bprm_set_creds(bprm);
507 static inline int security_bprm_check(struct linux_binprm *bprm)
512 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
516 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
520 static inline int security_sb_alloc(struct super_block *sb)
525 static inline void security_sb_free(struct super_block *sb)
528 static inline int security_sb_eat_lsm_opts(char *options,
534 static inline int security_sb_remount(struct super_block *sb,
540 static inline int security_sb_kern_mount(struct super_block *sb)
545 static inline int security_sb_show_options(struct seq_file *m,
546 struct super_block *sb)
551 static inline int security_sb_statfs(struct dentry *dentry)
556 static inline int security_sb_mount(const char *dev_name, const struct path *path,
557 const char *type, unsigned long flags,
563 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
568 static inline int security_sb_pivotroot(const struct path *old_path,
569 const struct path *new_path)
574 static inline int security_sb_set_mnt_opts(struct super_block *sb,
576 unsigned long kern_flags,
577 unsigned long *set_kern_flags)
582 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
583 struct super_block *newsb,
584 unsigned long kern_flags,
585 unsigned long *set_kern_flags)
590 static inline int security_add_mnt_opt(const char *option, const char *val,
591 int len, void **mnt_opts)
596 static inline int security_inode_alloc(struct inode *inode)
601 static inline void security_inode_free(struct inode *inode)
604 static inline int security_dentry_init_security(struct dentry *dentry,
606 const struct qstr *name,
613 static inline int security_dentry_create_files_as(struct dentry *dentry,
614 int mode, struct qstr *name,
615 const struct cred *old,
622 static inline int security_inode_init_security(struct inode *inode,
624 const struct qstr *qstr,
625 const initxattrs xattrs,
631 static inline int security_old_inode_init_security(struct inode *inode,
633 const struct qstr *qstr,
635 void **value, size_t *len)
640 static inline int security_inode_create(struct inode *dir,
641 struct dentry *dentry,
647 static inline int security_inode_link(struct dentry *old_dentry,
649 struct dentry *new_dentry)
654 static inline int security_inode_unlink(struct inode *dir,
655 struct dentry *dentry)
660 static inline int security_inode_symlink(struct inode *dir,
661 struct dentry *dentry,
662 const char *old_name)
667 static inline int security_inode_mkdir(struct inode *dir,
668 struct dentry *dentry,
674 static inline int security_inode_rmdir(struct inode *dir,
675 struct dentry *dentry)
680 static inline int security_inode_mknod(struct inode *dir,
681 struct dentry *dentry,
687 static inline int security_inode_rename(struct inode *old_dir,
688 struct dentry *old_dentry,
689 struct inode *new_dir,
690 struct dentry *new_dentry,
696 static inline int security_inode_readlink(struct dentry *dentry)
701 static inline int security_inode_follow_link(struct dentry *dentry,
708 static inline int security_inode_permission(struct inode *inode, int mask)
713 static inline int security_inode_setattr(struct dentry *dentry,
719 static inline int security_inode_getattr(const struct path *path)
724 static inline int security_inode_setxattr(struct dentry *dentry,
725 const char *name, const void *value, size_t size, int flags)
727 return cap_inode_setxattr(dentry, name, value, size, flags);
730 static inline void security_inode_post_setxattr(struct dentry *dentry,
731 const char *name, const void *value, size_t size, int flags)
734 static inline int security_inode_getxattr(struct dentry *dentry,
740 static inline int security_inode_listxattr(struct dentry *dentry)
745 static inline int security_inode_removexattr(struct dentry *dentry,
748 return cap_inode_removexattr(dentry, name);
751 static inline int security_inode_need_killpriv(struct dentry *dentry)
753 return cap_inode_need_killpriv(dentry);
756 static inline int security_inode_killpriv(struct dentry *dentry)
758 return cap_inode_killpriv(dentry);
761 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
766 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
771 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
776 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
781 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
786 static inline int security_inode_copy_up_xattr(const char *name)
791 static inline int security_file_permission(struct file *file, int mask)
796 static inline int security_file_alloc(struct file *file)
801 static inline void security_file_free(struct file *file)
804 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
810 static inline int security_mmap_file(struct file *file, unsigned long prot,
816 static inline int security_mmap_addr(unsigned long addr)
818 return cap_mmap_addr(addr);
821 static inline int security_file_mprotect(struct vm_area_struct *vma,
822 unsigned long reqprot,
828 static inline int security_file_lock(struct file *file, unsigned int cmd)
833 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
839 static inline void security_file_set_fowner(struct file *file)
844 static inline int security_file_send_sigiotask(struct task_struct *tsk,
845 struct fown_struct *fown,
851 static inline int security_file_receive(struct file *file)
856 static inline int security_file_open(struct file *file)
861 static inline int security_task_alloc(struct task_struct *task,
862 unsigned long clone_flags)
867 static inline void security_task_free(struct task_struct *task)
870 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
875 static inline void security_cred_free(struct cred *cred)
878 static inline int security_prepare_creds(struct cred *new,
879 const struct cred *old,
885 static inline void security_transfer_creds(struct cred *new,
886 const struct cred *old)
890 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
895 static inline int security_kernel_create_files_as(struct cred *cred,
901 static inline int security_kernel_module_request(char *kmod_name)
906 static inline int security_kernel_load_data(enum kernel_load_data_id id)
911 static inline int security_kernel_read_file(struct file *file,
912 enum kernel_read_file_id id)
917 static inline int security_kernel_post_read_file(struct file *file,
918 char *buf, loff_t size,
919 enum kernel_read_file_id id)
924 static inline int security_task_fix_setuid(struct cred *new,
925 const struct cred *old,
928 return cap_task_fix_setuid(new, old, flags);
931 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
936 static inline int security_task_getpgid(struct task_struct *p)
941 static inline int security_task_getsid(struct task_struct *p)
946 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
951 static inline int security_task_setnice(struct task_struct *p, int nice)
953 return cap_task_setnice(p, nice);
956 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
958 return cap_task_setioprio(p, ioprio);
961 static inline int security_task_getioprio(struct task_struct *p)
966 static inline int security_task_prlimit(const struct cred *cred,
967 const struct cred *tcred,
973 static inline int security_task_setrlimit(struct task_struct *p,
974 unsigned int resource,
975 struct rlimit *new_rlim)
980 static inline int security_task_setscheduler(struct task_struct *p)
982 return cap_task_setscheduler(p);
985 static inline int security_task_getscheduler(struct task_struct *p)
990 static inline int security_task_movememory(struct task_struct *p)
995 static inline int security_task_kill(struct task_struct *p,
996 struct kernel_siginfo *info, int sig,
997 const struct cred *cred)
1002 static inline int security_task_prctl(int option, unsigned long arg2,
1007 return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1010 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1013 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1019 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1024 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1029 static inline void security_msg_msg_free(struct msg_msg *msg)
1032 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1037 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1040 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1046 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1051 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1052 struct msg_msg *msg, int msqflg)
1057 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1058 struct msg_msg *msg,
1059 struct task_struct *target,
1060 long type, int mode)
1065 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1070 static inline void security_shm_free(struct kern_ipc_perm *shp)
1073 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1079 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1084 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1085 char __user *shmaddr, int shmflg)
1090 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1095 static inline void security_sem_free(struct kern_ipc_perm *sma)
1098 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1103 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1108 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1109 struct sembuf *sops, unsigned nsops,
1115 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1118 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1123 static inline int security_setprocattr(char *name, void *value, size_t size)
1128 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1133 static inline int security_ismaclabel(const char *name)
1138 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1143 static inline int security_secctx_to_secid(const char *secdata,
1150 static inline void security_release_secctx(char *secdata, u32 seclen)
1154 static inline void security_inode_invalidate_secctx(struct inode *inode)
1158 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1162 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1166 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1170 #endif /* CONFIG_SECURITY */
1172 #ifdef CONFIG_SECURITY_NETWORK
1174 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1175 int security_unix_may_send(struct socket *sock, struct socket *other);
1176 int security_socket_create(int family, int type, int protocol, int kern);
1177 int security_socket_post_create(struct socket *sock, int family,
1178 int type, int protocol, int kern);
1179 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1180 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1181 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1182 int security_socket_listen(struct socket *sock, int backlog);
1183 int security_socket_accept(struct socket *sock, struct socket *newsock);
1184 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1185 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1186 int size, int flags);
1187 int security_socket_getsockname(struct socket *sock);
1188 int security_socket_getpeername(struct socket *sock);
1189 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1190 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1191 int security_socket_shutdown(struct socket *sock, int how);
1192 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1193 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1194 int __user *optlen, unsigned len);
1195 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1196 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1197 void security_sk_free(struct sock *sk);
1198 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1199 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1200 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1201 void security_sock_graft(struct sock*sk, struct socket *parent);
1202 int security_inet_conn_request(struct sock *sk,
1203 struct sk_buff *skb, struct request_sock *req);
1204 void security_inet_csk_clone(struct sock *newsk,
1205 const struct request_sock *req);
1206 void security_inet_conn_established(struct sock *sk,
1207 struct sk_buff *skb);
1208 int security_secmark_relabel_packet(u32 secid);
1209 void security_secmark_refcount_inc(void);
1210 void security_secmark_refcount_dec(void);
1211 int security_tun_dev_alloc_security(void **security);
1212 void security_tun_dev_free_security(void *security);
1213 int security_tun_dev_create(void);
1214 int security_tun_dev_attach_queue(void *security);
1215 int security_tun_dev_attach(struct sock *sk, void *security);
1216 int security_tun_dev_open(void *security);
1217 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1218 int security_sctp_bind_connect(struct sock *sk, int optname,
1219 struct sockaddr *address, int addrlen);
1220 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1221 struct sock *newsk);
1223 #else /* CONFIG_SECURITY_NETWORK */
1224 static inline int security_unix_stream_connect(struct sock *sock,
1231 static inline int security_unix_may_send(struct socket *sock,
1232 struct socket *other)
1237 static inline int security_socket_create(int family, int type,
1238 int protocol, int kern)
1243 static inline int security_socket_post_create(struct socket *sock,
1246 int protocol, int kern)
1251 static inline int security_socket_socketpair(struct socket *socka,
1252 struct socket *sockb)
1257 static inline int security_socket_bind(struct socket *sock,
1258 struct sockaddr *address,
1264 static inline int security_socket_connect(struct socket *sock,
1265 struct sockaddr *address,
1271 static inline int security_socket_listen(struct socket *sock, int backlog)
1276 static inline int security_socket_accept(struct socket *sock,
1277 struct socket *newsock)
1282 static inline int security_socket_sendmsg(struct socket *sock,
1283 struct msghdr *msg, int size)
1288 static inline int security_socket_recvmsg(struct socket *sock,
1289 struct msghdr *msg, int size,
1295 static inline int security_socket_getsockname(struct socket *sock)
1300 static inline int security_socket_getpeername(struct socket *sock)
1305 static inline int security_socket_getsockopt(struct socket *sock,
1306 int level, int optname)
1311 static inline int security_socket_setsockopt(struct socket *sock,
1312 int level, int optname)
1317 static inline int security_socket_shutdown(struct socket *sock, int how)
1321 static inline int security_sock_rcv_skb(struct sock *sk,
1322 struct sk_buff *skb)
1327 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1328 int __user *optlen, unsigned len)
1330 return -ENOPROTOOPT;
1333 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1335 return -ENOPROTOOPT;
1338 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1343 static inline void security_sk_free(struct sock *sk)
1347 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1351 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1355 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1359 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1363 static inline int security_inet_conn_request(struct sock *sk,
1364 struct sk_buff *skb, struct request_sock *req)
1369 static inline void security_inet_csk_clone(struct sock *newsk,
1370 const struct request_sock *req)
1374 static inline void security_inet_conn_established(struct sock *sk,
1375 struct sk_buff *skb)
1379 static inline int security_secmark_relabel_packet(u32 secid)
1384 static inline void security_secmark_refcount_inc(void)
1388 static inline void security_secmark_refcount_dec(void)
1392 static inline int security_tun_dev_alloc_security(void **security)
1397 static inline void security_tun_dev_free_security(void *security)
1401 static inline int security_tun_dev_create(void)
1406 static inline int security_tun_dev_attach_queue(void *security)
1411 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1416 static inline int security_tun_dev_open(void *security)
1421 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1422 struct sk_buff *skb)
1427 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1428 struct sockaddr *address,
1434 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1439 #endif /* CONFIG_SECURITY_NETWORK */
1441 #ifdef CONFIG_SECURITY_INFINIBAND
1442 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1443 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1444 int security_ib_alloc_security(void **sec);
1445 void security_ib_free_security(void *sec);
1446 #else /* CONFIG_SECURITY_INFINIBAND */
1447 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1452 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1457 static inline int security_ib_alloc_security(void **sec)
1462 static inline void security_ib_free_security(void *sec)
1465 #endif /* CONFIG_SECURITY_INFINIBAND */
1467 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1469 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1470 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1471 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1472 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1473 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1474 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1475 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1476 struct xfrm_sec_ctx *polsec, u32 secid);
1477 int security_xfrm_state_delete(struct xfrm_state *x);
1478 void security_xfrm_state_free(struct xfrm_state *x);
1479 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1480 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1481 struct xfrm_policy *xp,
1482 const struct flowi *fl);
1483 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1484 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1486 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1488 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1489 struct xfrm_user_sec_ctx *sec_ctx,
1495 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1500 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1504 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1509 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1510 struct xfrm_user_sec_ctx *sec_ctx)
1515 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1516 struct xfrm_sec_ctx *polsec, u32 secid)
1521 static inline void security_xfrm_state_free(struct xfrm_state *x)
1525 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1530 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1535 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1536 struct xfrm_policy *xp, const struct flowi *fl)
1541 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1546 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1550 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1552 #ifdef CONFIG_SECURITY_PATH
1553 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1554 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1555 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1556 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1558 int security_path_truncate(const struct path *path);
1559 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1560 const char *old_name);
1561 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1562 struct dentry *new_dentry);
1563 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1564 const struct path *new_dir, struct dentry *new_dentry,
1565 unsigned int flags);
1566 int security_path_chmod(const struct path *path, umode_t mode);
1567 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1568 int security_path_chroot(const struct path *path);
1569 #else /* CONFIG_SECURITY_PATH */
1570 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1575 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1581 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1586 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1587 umode_t mode, unsigned int dev)
1592 static inline int security_path_truncate(const struct path *path)
1597 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1598 const char *old_name)
1603 static inline int security_path_link(struct dentry *old_dentry,
1604 const struct path *new_dir,
1605 struct dentry *new_dentry)
1610 static inline int security_path_rename(const struct path *old_dir,
1611 struct dentry *old_dentry,
1612 const struct path *new_dir,
1613 struct dentry *new_dentry,
1619 static inline int security_path_chmod(const struct path *path, umode_t mode)
1624 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1629 static inline int security_path_chroot(const struct path *path)
1633 #endif /* CONFIG_SECURITY_PATH */
1636 #ifdef CONFIG_SECURITY
1638 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1639 void security_key_free(struct key *key);
1640 int security_key_permission(key_ref_t key_ref,
1641 const struct cred *cred, unsigned perm);
1642 int security_key_getsecurity(struct key *key, char **_buffer);
1646 static inline int security_key_alloc(struct key *key,
1647 const struct cred *cred,
1648 unsigned long flags)
1653 static inline void security_key_free(struct key *key)
1657 static inline int security_key_permission(key_ref_t key_ref,
1658 const struct cred *cred,
1664 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1671 #endif /* CONFIG_KEYS */
1674 #ifdef CONFIG_SECURITY
1675 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1676 int security_audit_rule_known(struct audit_krule *krule);
1677 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1678 struct audit_context *actx);
1679 void security_audit_rule_free(void *lsmrule);
1683 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1689 static inline int security_audit_rule_known(struct audit_krule *krule)
1694 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1695 void *lsmrule, struct audit_context *actx)
1700 static inline void security_audit_rule_free(void *lsmrule)
1703 #endif /* CONFIG_SECURITY */
1704 #endif /* CONFIG_AUDIT */
1706 #ifdef CONFIG_SECURITYFS
1708 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1709 struct dentry *parent, void *data,
1710 const struct file_operations *fops);
1711 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1712 struct dentry *securityfs_create_symlink(const char *name,
1713 struct dentry *parent,
1715 const struct inode_operations *iops);
1716 extern void securityfs_remove(struct dentry *dentry);
1718 #else /* CONFIG_SECURITYFS */
1720 static inline struct dentry *securityfs_create_dir(const char *name,
1721 struct dentry *parent)
1723 return ERR_PTR(-ENODEV);
1726 static inline struct dentry *securityfs_create_file(const char *name,
1728 struct dentry *parent,
1730 const struct file_operations *fops)
1732 return ERR_PTR(-ENODEV);
1735 static inline struct dentry *securityfs_create_symlink(const char *name,
1736 struct dentry *parent,
1738 const struct inode_operations *iops)
1740 return ERR_PTR(-ENODEV);
1743 static inline void securityfs_remove(struct dentry *dentry)
1748 #ifdef CONFIG_BPF_SYSCALL
1752 struct bpf_prog_aux;
1753 #ifdef CONFIG_SECURITY
1754 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1755 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1756 extern int security_bpf_prog(struct bpf_prog *prog);
1757 extern int security_bpf_map_alloc(struct bpf_map *map);
1758 extern void security_bpf_map_free(struct bpf_map *map);
1759 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1760 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1762 static inline int security_bpf(int cmd, union bpf_attr *attr,
1768 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1773 static inline int security_bpf_prog(struct bpf_prog *prog)
1778 static inline int security_bpf_map_alloc(struct bpf_map *map)
1783 static inline void security_bpf_map_free(struct bpf_map *map)
1786 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1791 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1793 #endif /* CONFIG_SECURITY */
1794 #endif /* CONFIG_BPF_SYSCALL */
1796 #endif /* ! __LINUX_SECURITY_H */