8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * Due to this file being licensed under the GPL there is controversy over
16 * whether this permits you to write a module that #includes this file
17 * without placing your module under the GPL. Please consult a lawyer for
18 * advice before doing this.
22 #ifndef __LINUX_SECURITY_H
23 #define __LINUX_SECURITY_H
25 #include <linux/key.h>
26 #include <linux/capability.h>
28 #include <linux/slab.h>
29 #include <linux/err.h>
30 #include <linux/string.h>
51 struct file_operations;
59 /* If capable should audit the security request */
60 #define SECURITY_CAP_NOAUDIT 0
61 #define SECURITY_CAP_AUDIT 1
63 /* LSM Agnostic defines for sb_set_mnt_opts */
64 #define SECURITY_LSM_NATIVE_LABELS 1
68 struct user_namespace;
71 /* These functions are in security/commoncap.c */
72 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
74 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
75 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
76 extern int cap_ptrace_traceme(struct task_struct *parent);
77 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
78 extern int cap_capset(struct cred *new, const struct cred *old,
79 const kernel_cap_t *effective,
80 const kernel_cap_t *inheritable,
81 const kernel_cap_t *permitted);
82 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
83 extern int cap_bprm_secureexec(struct linux_binprm *bprm);
84 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
85 const void *value, size_t size, int flags);
86 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
87 extern int cap_inode_need_killpriv(struct dentry *dentry);
88 extern int cap_inode_killpriv(struct dentry *dentry);
89 extern int cap_mmap_addr(unsigned long addr);
90 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
91 unsigned long prot, unsigned long flags);
92 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
93 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
94 unsigned long arg4, unsigned long arg5);
95 extern int cap_task_setscheduler(struct task_struct *p);
96 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
97 extern int cap_task_setnice(struct task_struct *p, int nice);
98 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
107 struct xfrm_selector;
110 struct xfrm_user_sec_ctx;
114 extern unsigned long mmap_min_addr;
115 extern unsigned long dac_mmap_min_addr;
117 #define mmap_min_addr 0UL
118 #define dac_mmap_min_addr 0UL
122 * Values used in the task_security_ops calls
124 /* setuid or setgid, id0 == uid or gid */
125 #define LSM_SETID_ID 1
127 /* setreuid or setregid, id0 == real, id1 == eff */
128 #define LSM_SETID_RE 2
130 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
131 #define LSM_SETID_RES 4
133 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
134 #define LSM_SETID_FS 8
136 /* forward declares to avoid warnings */
140 /* bprm->unsafe reasons */
141 #define LSM_UNSAFE_SHARE 1
142 #define LSM_UNSAFE_PTRACE 2
143 #define LSM_UNSAFE_PTRACE_CAP 4
144 #define LSM_UNSAFE_NO_NEW_PRIVS 8
147 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
148 void __user *buffer, size_t *lenp, loff_t *ppos);
151 /* security_inode_init_security callback function to write xattrs */
152 typedef int (*initxattrs) (struct inode *inode,
153 const struct xattr *xattr_array, void *fs_data);
155 #ifdef CONFIG_SECURITY
157 struct security_mnt_opts {
163 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
165 opts->mnt_opts = NULL;
166 opts->mnt_opts_flags = NULL;
167 opts->num_mnt_opts = 0;
170 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
174 for (i = 0; i < opts->num_mnt_opts; i++)
175 kfree(opts->mnt_opts[i]);
176 kfree(opts->mnt_opts);
177 opts->mnt_opts = NULL;
178 kfree(opts->mnt_opts_flags);
179 opts->mnt_opts_flags = NULL;
180 opts->num_mnt_opts = 0;
184 extern int security_init(void);
186 /* Security operations */
187 int security_binder_set_context_mgr(struct task_struct *mgr);
188 int security_binder_transaction(struct task_struct *from,
189 struct task_struct *to);
190 int security_binder_transfer_binder(struct task_struct *from,
191 struct task_struct *to);
192 int security_binder_transfer_file(struct task_struct *from,
193 struct task_struct *to, struct file *file);
194 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
195 int security_ptrace_traceme(struct task_struct *parent);
196 int security_capget(struct task_struct *target,
197 kernel_cap_t *effective,
198 kernel_cap_t *inheritable,
199 kernel_cap_t *permitted);
200 int security_capset(struct cred *new, const struct cred *old,
201 const kernel_cap_t *effective,
202 const kernel_cap_t *inheritable,
203 const kernel_cap_t *permitted);
204 int security_capable(const struct cred *cred, struct user_namespace *ns,
206 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
208 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
209 int security_quota_on(struct dentry *dentry);
210 int security_syslog(int type);
211 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
212 static inline int security_settime(const struct timespec *ts, const struct timezone *tz)
214 struct timespec64 ts64 = timespec_to_timespec64(*ts);
216 return security_settime64(&ts64, 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_bprm_secureexec(struct linux_binprm *bprm);
224 int security_sb_alloc(struct super_block *sb);
225 void security_sb_free(struct super_block *sb);
226 int security_sb_copy_data(char *orig, char *copy);
227 int security_sb_remount(struct super_block *sb, void *data);
228 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
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,
236 struct security_mnt_opts *opts,
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 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
242 int security_dentry_init_security(struct dentry *dentry, int mode,
243 const struct qstr *name, void **ctx,
245 int security_dentry_create_files_as(struct dentry *dentry, int mode,
247 const struct cred *old,
250 int security_inode_alloc(struct inode *inode);
251 void security_inode_free(struct inode *inode);
252 int security_inode_init_security(struct inode *inode, struct inode *dir,
253 const struct qstr *qstr,
254 initxattrs initxattrs, void *fs_data);
255 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
256 const struct qstr *qstr, const char **name,
257 void **value, size_t *len);
258 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
259 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
260 struct dentry *new_dentry);
261 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
262 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
263 const char *old_name);
264 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
265 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
266 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
267 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
268 struct inode *new_dir, struct dentry *new_dentry,
270 int security_inode_readlink(struct dentry *dentry);
271 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
273 int security_inode_permission(struct inode *inode, int mask);
274 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
275 int security_inode_getattr(const struct path *path);
276 int security_inode_setxattr(struct dentry *dentry, const char *name,
277 const void *value, size_t size, int flags);
278 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
279 const void *value, size_t size, int flags);
280 int security_inode_getxattr(struct dentry *dentry, const char *name);
281 int security_inode_listxattr(struct dentry *dentry);
282 int security_inode_removexattr(struct dentry *dentry, const char *name);
283 int security_inode_need_killpriv(struct dentry *dentry);
284 int security_inode_killpriv(struct dentry *dentry);
285 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
286 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
287 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
288 void security_inode_getsecid(struct inode *inode, u32 *secid);
289 int security_inode_copy_up(struct dentry *src, struct cred **new);
290 int security_inode_copy_up_xattr(const char *name);
291 int security_file_permission(struct file *file, int mask);
292 int security_file_alloc(struct file *file);
293 void security_file_free(struct file *file);
294 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
295 int security_mmap_file(struct file *file, unsigned long prot,
296 unsigned long flags);
297 int security_mmap_addr(unsigned long addr);
298 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
300 int security_file_lock(struct file *file, unsigned int cmd);
301 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
302 void security_file_set_fowner(struct file *file);
303 int security_file_send_sigiotask(struct task_struct *tsk,
304 struct fown_struct *fown, int sig);
305 int security_file_receive(struct file *file);
306 int security_file_open(struct file *file, const struct cred *cred);
307 int security_task_create(unsigned long clone_flags);
308 void security_task_free(struct task_struct *task);
309 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
310 void security_cred_free(struct cred *cred);
311 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
312 void security_transfer_creds(struct cred *new, const struct cred *old);
313 int security_kernel_act_as(struct cred *new, u32 secid);
314 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
315 int security_kernel_module_request(char *kmod_name);
316 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
317 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
318 enum kernel_read_file_id id);
319 int security_task_fix_setuid(struct cred *new, const struct cred *old,
321 int security_task_setpgid(struct task_struct *p, pid_t pgid);
322 int security_task_getpgid(struct task_struct *p);
323 int security_task_getsid(struct task_struct *p);
324 void security_task_getsecid(struct task_struct *p, u32 *secid);
325 int security_task_setnice(struct task_struct *p, int nice);
326 int security_task_setioprio(struct task_struct *p, int ioprio);
327 int security_task_getioprio(struct task_struct *p);
328 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
329 struct rlimit *new_rlim);
330 int security_task_setscheduler(struct task_struct *p);
331 int security_task_getscheduler(struct task_struct *p);
332 int security_task_movememory(struct task_struct *p);
333 int security_task_kill(struct task_struct *p, struct siginfo *info,
335 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
336 unsigned long arg4, unsigned long arg5);
337 void security_task_to_inode(struct task_struct *p, struct inode *inode);
338 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
339 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
340 int security_msg_msg_alloc(struct msg_msg *msg);
341 void security_msg_msg_free(struct msg_msg *msg);
342 int security_msg_queue_alloc(struct msg_queue *msq);
343 void security_msg_queue_free(struct msg_queue *msq);
344 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
345 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
346 int security_msg_queue_msgsnd(struct msg_queue *msq,
347 struct msg_msg *msg, int msqflg);
348 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
349 struct task_struct *target, long type, int mode);
350 int security_shm_alloc(struct shmid_kernel *shp);
351 void security_shm_free(struct shmid_kernel *shp);
352 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
353 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
354 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
355 int security_sem_alloc(struct sem_array *sma);
356 void security_sem_free(struct sem_array *sma);
357 int security_sem_associate(struct sem_array *sma, int semflg);
358 int security_sem_semctl(struct sem_array *sma, int cmd);
359 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
360 unsigned nsops, int alter);
361 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
362 int security_getprocattr(struct task_struct *p, char *name, char **value);
363 int security_setprocattr(const char *name, void *value, size_t size);
364 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
365 int security_ismaclabel(const char *name);
366 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
367 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
368 void security_release_secctx(char *secdata, u32 seclen);
370 void security_inode_invalidate_secctx(struct inode *inode);
371 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
372 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
373 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
374 #else /* CONFIG_SECURITY */
375 struct security_mnt_opts {
378 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
382 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
387 * This is the default capabilities functionality. Most of these functions
388 * are just stubbed out, but a few must call the proper capable code.
391 static inline int security_init(void)
396 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
401 static inline int security_binder_transaction(struct task_struct *from,
402 struct task_struct *to)
407 static inline int security_binder_transfer_binder(struct task_struct *from,
408 struct task_struct *to)
413 static inline int security_binder_transfer_file(struct task_struct *from,
414 struct task_struct *to,
420 static inline int security_ptrace_access_check(struct task_struct *child,
423 return cap_ptrace_access_check(child, mode);
426 static inline int security_ptrace_traceme(struct task_struct *parent)
428 return cap_ptrace_traceme(parent);
431 static inline int security_capget(struct task_struct *target,
432 kernel_cap_t *effective,
433 kernel_cap_t *inheritable,
434 kernel_cap_t *permitted)
436 return cap_capget(target, effective, inheritable, permitted);
439 static inline int security_capset(struct cred *new,
440 const struct cred *old,
441 const kernel_cap_t *effective,
442 const kernel_cap_t *inheritable,
443 const kernel_cap_t *permitted)
445 return cap_capset(new, old, effective, inheritable, permitted);
448 static inline int security_capable(const struct cred *cred,
449 struct user_namespace *ns, int cap)
451 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
454 static inline int security_capable_noaudit(const struct cred *cred,
455 struct user_namespace *ns, int cap) {
456 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
459 static inline int security_quotactl(int cmds, int type, int id,
460 struct super_block *sb)
465 static inline int security_quota_on(struct dentry *dentry)
470 static inline int security_syslog(int type)
475 static inline int security_settime64(const struct timespec64 *ts,
476 const struct timezone *tz)
478 return cap_settime(ts, tz);
481 static inline int security_settime(const struct timespec *ts,
482 const struct timezone *tz)
484 struct timespec64 ts64 = timespec_to_timespec64(*ts);
486 return cap_settime(&ts64, tz);
489 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
491 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
494 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
496 return cap_bprm_set_creds(bprm);
499 static inline int security_bprm_check(struct linux_binprm *bprm)
504 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
508 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
512 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
514 return cap_bprm_secureexec(bprm);
517 static inline int security_sb_alloc(struct super_block *sb)
522 static inline void security_sb_free(struct super_block *sb)
525 static inline int security_sb_copy_data(char *orig, char *copy)
530 static inline int security_sb_remount(struct super_block *sb, void *data)
535 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
540 static inline int security_sb_show_options(struct seq_file *m,
541 struct super_block *sb)
546 static inline int security_sb_statfs(struct dentry *dentry)
551 static inline int security_sb_mount(const char *dev_name, const struct path *path,
552 const char *type, unsigned long flags,
558 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
563 static inline int security_sb_pivotroot(const struct path *old_path,
564 const struct path *new_path)
569 static inline int security_sb_set_mnt_opts(struct super_block *sb,
570 struct security_mnt_opts *opts,
571 unsigned long kern_flags,
572 unsigned long *set_kern_flags)
577 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
578 struct super_block *newsb)
583 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
588 static inline int security_inode_alloc(struct inode *inode)
593 static inline void security_inode_free(struct inode *inode)
596 static inline int security_dentry_init_security(struct dentry *dentry,
598 const struct qstr *name,
605 static inline int security_dentry_create_files_as(struct dentry *dentry,
606 int mode, struct qstr *name,
607 const struct cred *old,
614 static inline int security_inode_init_security(struct inode *inode,
616 const struct qstr *qstr,
617 const initxattrs xattrs,
623 static inline int security_old_inode_init_security(struct inode *inode,
625 const struct qstr *qstr,
627 void **value, size_t *len)
632 static inline int security_inode_create(struct inode *dir,
633 struct dentry *dentry,
639 static inline int security_inode_link(struct dentry *old_dentry,
641 struct dentry *new_dentry)
646 static inline int security_inode_unlink(struct inode *dir,
647 struct dentry *dentry)
652 static inline int security_inode_symlink(struct inode *dir,
653 struct dentry *dentry,
654 const char *old_name)
659 static inline int security_inode_mkdir(struct inode *dir,
660 struct dentry *dentry,
666 static inline int security_inode_rmdir(struct inode *dir,
667 struct dentry *dentry)
672 static inline int security_inode_mknod(struct inode *dir,
673 struct dentry *dentry,
679 static inline int security_inode_rename(struct inode *old_dir,
680 struct dentry *old_dentry,
681 struct inode *new_dir,
682 struct dentry *new_dentry,
688 static inline int security_inode_readlink(struct dentry *dentry)
693 static inline int security_inode_follow_link(struct dentry *dentry,
700 static inline int security_inode_permission(struct inode *inode, int mask)
705 static inline int security_inode_setattr(struct dentry *dentry,
711 static inline int security_inode_getattr(const struct path *path)
716 static inline int security_inode_setxattr(struct dentry *dentry,
717 const char *name, const void *value, size_t size, int flags)
719 return cap_inode_setxattr(dentry, name, value, size, flags);
722 static inline void security_inode_post_setxattr(struct dentry *dentry,
723 const char *name, const void *value, size_t size, int flags)
726 static inline int security_inode_getxattr(struct dentry *dentry,
732 static inline int security_inode_listxattr(struct dentry *dentry)
737 static inline int security_inode_removexattr(struct dentry *dentry,
740 return cap_inode_removexattr(dentry, name);
743 static inline int security_inode_need_killpriv(struct dentry *dentry)
745 return cap_inode_need_killpriv(dentry);
748 static inline int security_inode_killpriv(struct dentry *dentry)
750 return cap_inode_killpriv(dentry);
753 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
758 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
763 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
768 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
773 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
778 static inline int security_inode_copy_up_xattr(const char *name)
783 static inline int security_file_permission(struct file *file, int mask)
788 static inline int security_file_alloc(struct file *file)
793 static inline void security_file_free(struct file *file)
796 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
802 static inline int security_mmap_file(struct file *file, unsigned long prot,
808 static inline int security_mmap_addr(unsigned long addr)
810 return cap_mmap_addr(addr);
813 static inline int security_file_mprotect(struct vm_area_struct *vma,
814 unsigned long reqprot,
820 static inline int security_file_lock(struct file *file, unsigned int cmd)
825 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
831 static inline void security_file_set_fowner(struct file *file)
836 static inline int security_file_send_sigiotask(struct task_struct *tsk,
837 struct fown_struct *fown,
843 static inline int security_file_receive(struct file *file)
848 static inline int security_file_open(struct file *file,
849 const struct cred *cred)
854 static inline int security_task_create(unsigned long clone_flags)
859 static inline void security_task_free(struct task_struct *task)
862 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
867 static inline void security_cred_free(struct cred *cred)
870 static inline int security_prepare_creds(struct cred *new,
871 const struct cred *old,
877 static inline void security_transfer_creds(struct cred *new,
878 const struct cred *old)
882 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
887 static inline int security_kernel_create_files_as(struct cred *cred,
893 static inline int security_kernel_module_request(char *kmod_name)
898 static inline int security_kernel_read_file(struct file *file,
899 enum kernel_read_file_id id)
904 static inline int security_kernel_post_read_file(struct file *file,
905 char *buf, loff_t size,
906 enum kernel_read_file_id id)
911 static inline int security_task_fix_setuid(struct cred *new,
912 const struct cred *old,
915 return cap_task_fix_setuid(new, old, flags);
918 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
923 static inline int security_task_getpgid(struct task_struct *p)
928 static inline int security_task_getsid(struct task_struct *p)
933 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
938 static inline int security_task_setnice(struct task_struct *p, int nice)
940 return cap_task_setnice(p, nice);
943 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
945 return cap_task_setioprio(p, ioprio);
948 static inline int security_task_getioprio(struct task_struct *p)
953 static inline int security_task_setrlimit(struct task_struct *p,
954 unsigned int resource,
955 struct rlimit *new_rlim)
960 static inline int security_task_setscheduler(struct task_struct *p)
962 return cap_task_setscheduler(p);
965 static inline int security_task_getscheduler(struct task_struct *p)
970 static inline int security_task_movememory(struct task_struct *p)
975 static inline int security_task_kill(struct task_struct *p,
976 struct siginfo *info, int sig,
982 static inline int security_task_prctl(int option, unsigned long arg2,
987 return cap_task_prctl(option, arg2, arg3, arg4, arg5);
990 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
993 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
999 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1004 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1009 static inline void security_msg_msg_free(struct msg_msg *msg)
1012 static inline int security_msg_queue_alloc(struct msg_queue *msq)
1017 static inline void security_msg_queue_free(struct msg_queue *msq)
1020 static inline int security_msg_queue_associate(struct msg_queue *msq,
1026 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1031 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
1032 struct msg_msg *msg, int msqflg)
1037 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
1038 struct msg_msg *msg,
1039 struct task_struct *target,
1040 long type, int mode)
1045 static inline int security_shm_alloc(struct shmid_kernel *shp)
1050 static inline void security_shm_free(struct shmid_kernel *shp)
1053 static inline int security_shm_associate(struct shmid_kernel *shp,
1059 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1064 static inline int security_shm_shmat(struct shmid_kernel *shp,
1065 char __user *shmaddr, int shmflg)
1070 static inline int security_sem_alloc(struct sem_array *sma)
1075 static inline void security_sem_free(struct sem_array *sma)
1078 static inline int security_sem_associate(struct sem_array *sma, int semflg)
1083 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
1088 static inline int security_sem_semop(struct sem_array *sma,
1089 struct sembuf *sops, unsigned nsops,
1095 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1098 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1103 static inline int security_setprocattr(char *name, void *value, size_t size)
1108 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1113 static inline int security_ismaclabel(const char *name)
1118 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1123 static inline int security_secctx_to_secid(const char *secdata,
1130 static inline void security_release_secctx(char *secdata, u32 seclen)
1134 static inline void security_inode_invalidate_secctx(struct inode *inode)
1138 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1142 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1146 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1150 #endif /* CONFIG_SECURITY */
1152 #ifdef CONFIG_SECURITY_NETWORK
1154 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1155 int security_unix_may_send(struct socket *sock, struct socket *other);
1156 int security_socket_create(int family, int type, int protocol, int kern);
1157 int security_socket_post_create(struct socket *sock, int family,
1158 int type, int protocol, int kern);
1159 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1160 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1161 int security_socket_listen(struct socket *sock, int backlog);
1162 int security_socket_accept(struct socket *sock, struct socket *newsock);
1163 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1164 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1165 int size, int flags);
1166 int security_socket_getsockname(struct socket *sock);
1167 int security_socket_getpeername(struct socket *sock);
1168 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1169 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1170 int security_socket_shutdown(struct socket *sock, int how);
1171 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1172 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1173 int __user *optlen, unsigned len);
1174 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1175 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1176 void security_sk_free(struct sock *sk);
1177 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1178 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1179 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1180 void security_sock_graft(struct sock*sk, struct socket *parent);
1181 int security_inet_conn_request(struct sock *sk,
1182 struct sk_buff *skb, struct request_sock *req);
1183 void security_inet_csk_clone(struct sock *newsk,
1184 const struct request_sock *req);
1185 void security_inet_conn_established(struct sock *sk,
1186 struct sk_buff *skb);
1187 int security_secmark_relabel_packet(u32 secid);
1188 void security_secmark_refcount_inc(void);
1189 void security_secmark_refcount_dec(void);
1190 int security_tun_dev_alloc_security(void **security);
1191 void security_tun_dev_free_security(void *security);
1192 int security_tun_dev_create(void);
1193 int security_tun_dev_attach_queue(void *security);
1194 int security_tun_dev_attach(struct sock *sk, void *security);
1195 int security_tun_dev_open(void *security);
1197 #else /* CONFIG_SECURITY_NETWORK */
1198 static inline int security_unix_stream_connect(struct sock *sock,
1205 static inline int security_unix_may_send(struct socket *sock,
1206 struct socket *other)
1211 static inline int security_socket_create(int family, int type,
1212 int protocol, int kern)
1217 static inline int security_socket_post_create(struct socket *sock,
1220 int protocol, int kern)
1225 static inline int security_socket_bind(struct socket *sock,
1226 struct sockaddr *address,
1232 static inline int security_socket_connect(struct socket *sock,
1233 struct sockaddr *address,
1239 static inline int security_socket_listen(struct socket *sock, int backlog)
1244 static inline int security_socket_accept(struct socket *sock,
1245 struct socket *newsock)
1250 static inline int security_socket_sendmsg(struct socket *sock,
1251 struct msghdr *msg, int size)
1256 static inline int security_socket_recvmsg(struct socket *sock,
1257 struct msghdr *msg, int size,
1263 static inline int security_socket_getsockname(struct socket *sock)
1268 static inline int security_socket_getpeername(struct socket *sock)
1273 static inline int security_socket_getsockopt(struct socket *sock,
1274 int level, int optname)
1279 static inline int security_socket_setsockopt(struct socket *sock,
1280 int level, int optname)
1285 static inline int security_socket_shutdown(struct socket *sock, int how)
1289 static inline int security_sock_rcv_skb(struct sock *sk,
1290 struct sk_buff *skb)
1295 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1296 int __user *optlen, unsigned len)
1298 return -ENOPROTOOPT;
1301 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1303 return -ENOPROTOOPT;
1306 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1311 static inline void security_sk_free(struct sock *sk)
1315 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1319 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1323 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1327 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1331 static inline int security_inet_conn_request(struct sock *sk,
1332 struct sk_buff *skb, struct request_sock *req)
1337 static inline void security_inet_csk_clone(struct sock *newsk,
1338 const struct request_sock *req)
1342 static inline void security_inet_conn_established(struct sock *sk,
1343 struct sk_buff *skb)
1347 static inline int security_secmark_relabel_packet(u32 secid)
1352 static inline void security_secmark_refcount_inc(void)
1356 static inline void security_secmark_refcount_dec(void)
1360 static inline int security_tun_dev_alloc_security(void **security)
1365 static inline void security_tun_dev_free_security(void *security)
1369 static inline int security_tun_dev_create(void)
1374 static inline int security_tun_dev_attach_queue(void *security)
1379 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1384 static inline int security_tun_dev_open(void *security)
1388 #endif /* CONFIG_SECURITY_NETWORK */
1390 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1392 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1393 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1394 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1395 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1396 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1397 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1398 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1399 struct xfrm_sec_ctx *polsec, u32 secid);
1400 int security_xfrm_state_delete(struct xfrm_state *x);
1401 void security_xfrm_state_free(struct xfrm_state *x);
1402 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1403 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1404 struct xfrm_policy *xp,
1405 const struct flowi *fl);
1406 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1407 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1409 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1411 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1412 struct xfrm_user_sec_ctx *sec_ctx,
1418 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1423 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1427 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1432 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1433 struct xfrm_user_sec_ctx *sec_ctx)
1438 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1439 struct xfrm_sec_ctx *polsec, u32 secid)
1444 static inline void security_xfrm_state_free(struct xfrm_state *x)
1448 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1453 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1458 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1459 struct xfrm_policy *xp, const struct flowi *fl)
1464 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1469 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1473 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1475 #ifdef CONFIG_SECURITY_PATH
1476 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1477 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1478 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1479 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1481 int security_path_truncate(const struct path *path);
1482 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1483 const char *old_name);
1484 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1485 struct dentry *new_dentry);
1486 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1487 const struct path *new_dir, struct dentry *new_dentry,
1488 unsigned int flags);
1489 int security_path_chmod(const struct path *path, umode_t mode);
1490 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1491 int security_path_chroot(const struct path *path);
1492 #else /* CONFIG_SECURITY_PATH */
1493 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1498 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1504 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1509 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1510 umode_t mode, unsigned int dev)
1515 static inline int security_path_truncate(const struct path *path)
1520 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1521 const char *old_name)
1526 static inline int security_path_link(struct dentry *old_dentry,
1527 const struct path *new_dir,
1528 struct dentry *new_dentry)
1533 static inline int security_path_rename(const struct path *old_dir,
1534 struct dentry *old_dentry,
1535 const struct path *new_dir,
1536 struct dentry *new_dentry,
1542 static inline int security_path_chmod(const struct path *path, umode_t mode)
1547 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1552 static inline int security_path_chroot(const struct path *path)
1556 #endif /* CONFIG_SECURITY_PATH */
1559 #ifdef CONFIG_SECURITY
1561 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1562 void security_key_free(struct key *key);
1563 int security_key_permission(key_ref_t key_ref,
1564 const struct cred *cred, unsigned perm);
1565 int security_key_getsecurity(struct key *key, char **_buffer);
1569 static inline int security_key_alloc(struct key *key,
1570 const struct cred *cred,
1571 unsigned long flags)
1576 static inline void security_key_free(struct key *key)
1580 static inline int security_key_permission(key_ref_t key_ref,
1581 const struct cred *cred,
1587 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1594 #endif /* CONFIG_KEYS */
1597 #ifdef CONFIG_SECURITY
1598 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1599 int security_audit_rule_known(struct audit_krule *krule);
1600 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1601 struct audit_context *actx);
1602 void security_audit_rule_free(void *lsmrule);
1606 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1612 static inline int security_audit_rule_known(struct audit_krule *krule)
1617 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1618 void *lsmrule, struct audit_context *actx)
1623 static inline void security_audit_rule_free(void *lsmrule)
1626 #endif /* CONFIG_SECURITY */
1627 #endif /* CONFIG_AUDIT */
1629 #ifdef CONFIG_SECURITYFS
1631 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1632 struct dentry *parent, void *data,
1633 const struct file_operations *fops);
1634 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1635 extern void securityfs_remove(struct dentry *dentry);
1637 #else /* CONFIG_SECURITYFS */
1639 static inline struct dentry *securityfs_create_dir(const char *name,
1640 struct dentry *parent)
1642 return ERR_PTR(-ENODEV);
1645 static inline struct dentry *securityfs_create_file(const char *name,
1647 struct dentry *parent,
1649 const struct file_operations *fops)
1651 return ERR_PTR(-ENODEV);
1654 static inline void securityfs_remove(struct dentry *dentry)
1659 #ifdef CONFIG_SECURITY
1661 static inline char *alloc_secdata(void)
1663 return (char *)get_zeroed_page(GFP_KERNEL);
1666 static inline void free_secdata(void *secdata)
1668 free_page((unsigned long)secdata);
1673 static inline char *alloc_secdata(void)
1678 static inline void free_secdata(void *secdata)
1680 #endif /* CONFIG_SECURITY */
1682 #endif /* ! __LINUX_SECURITY_H */