4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 * Copyright (C) 2001 James Morris <jmorris@intercode.com.au>
8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
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 /* Flags for security_task_prlimit(). */
137 #define LSM_PRLIMIT_READ 1
138 #define LSM_PRLIMIT_WRITE 2
140 /* forward declares to avoid warnings */
144 /* bprm->unsafe reasons */
145 #define LSM_UNSAFE_SHARE 1
146 #define LSM_UNSAFE_PTRACE 2
147 #define LSM_UNSAFE_NO_NEW_PRIVS 4
150 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
151 void __user *buffer, size_t *lenp, loff_t *ppos);
154 /* security_inode_init_security callback function to write xattrs */
155 typedef int (*initxattrs) (struct inode *inode,
156 const struct xattr *xattr_array, void *fs_data);
158 #ifdef CONFIG_SECURITY
160 struct security_mnt_opts {
166 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
168 opts->mnt_opts = NULL;
169 opts->mnt_opts_flags = NULL;
170 opts->num_mnt_opts = 0;
173 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
177 for (i = 0; i < opts->num_mnt_opts; i++)
178 kfree(opts->mnt_opts[i]);
179 kfree(opts->mnt_opts);
180 opts->mnt_opts = NULL;
181 kfree(opts->mnt_opts_flags);
182 opts->mnt_opts_flags = NULL;
183 opts->num_mnt_opts = 0;
187 extern int security_init(void);
189 /* Security operations */
190 int security_binder_set_context_mgr(struct task_struct *mgr);
191 int security_binder_transaction(struct task_struct *from,
192 struct task_struct *to);
193 int security_binder_transfer_binder(struct task_struct *from,
194 struct task_struct *to);
195 int security_binder_transfer_file(struct task_struct *from,
196 struct task_struct *to, struct file *file);
197 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
198 int security_ptrace_traceme(struct task_struct *parent);
199 int security_capget(struct task_struct *target,
200 kernel_cap_t *effective,
201 kernel_cap_t *inheritable,
202 kernel_cap_t *permitted);
203 int security_capset(struct cred *new, const struct cred *old,
204 const kernel_cap_t *effective,
205 const kernel_cap_t *inheritable,
206 const kernel_cap_t *permitted);
207 int security_capable(const struct cred *cred, struct user_namespace *ns,
209 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
211 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
212 int security_quota_on(struct dentry *dentry);
213 int security_syslog(int type);
214 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
215 static inline int security_settime(const struct timespec *ts, const struct timezone *tz)
217 struct timespec64 ts64 = timespec_to_timespec64(*ts);
219 return security_settime64(&ts64, tz);
221 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
222 int security_bprm_set_creds(struct linux_binprm *bprm);
223 int security_bprm_check(struct linux_binprm *bprm);
224 void security_bprm_committing_creds(struct linux_binprm *bprm);
225 void security_bprm_committed_creds(struct linux_binprm *bprm);
226 int security_bprm_secureexec(struct linux_binprm *bprm);
227 int security_sb_alloc(struct super_block *sb);
228 void security_sb_free(struct super_block *sb);
229 int security_sb_copy_data(char *orig, char *copy);
230 int security_sb_remount(struct super_block *sb, void *data);
231 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
232 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
233 int security_sb_statfs(struct dentry *dentry);
234 int security_sb_mount(const char *dev_name, const struct path *path,
235 const char *type, unsigned long flags, void *data);
236 int security_sb_umount(struct vfsmount *mnt, int flags);
237 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
238 int security_sb_set_mnt_opts(struct super_block *sb,
239 struct security_mnt_opts *opts,
240 unsigned long kern_flags,
241 unsigned long *set_kern_flags);
242 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
243 struct super_block *newsb);
244 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *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, const struct cred *cred);
310 int security_task_create(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 int security_kernel_act_as(struct cred *new, u32 secid);
317 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
318 int security_kernel_module_request(char *kmod_name);
319 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
320 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
321 enum kernel_read_file_id id);
322 int security_task_fix_setuid(struct cred *new, const struct cred *old,
324 int security_task_setpgid(struct task_struct *p, pid_t pgid);
325 int security_task_getpgid(struct task_struct *p);
326 int security_task_getsid(struct task_struct *p);
327 void security_task_getsecid(struct task_struct *p, u32 *secid);
328 int security_task_setnice(struct task_struct *p, int nice);
329 int security_task_setioprio(struct task_struct *p, int ioprio);
330 int security_task_getioprio(struct task_struct *p);
331 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
333 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
334 struct rlimit *new_rlim);
335 int security_task_setscheduler(struct task_struct *p);
336 int security_task_getscheduler(struct task_struct *p);
337 int security_task_movememory(struct task_struct *p);
338 int security_task_kill(struct task_struct *p, struct siginfo *info,
340 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
341 unsigned long arg4, unsigned long arg5);
342 void security_task_to_inode(struct task_struct *p, struct inode *inode);
343 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
344 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
345 int security_msg_msg_alloc(struct msg_msg *msg);
346 void security_msg_msg_free(struct msg_msg *msg);
347 int security_msg_queue_alloc(struct msg_queue *msq);
348 void security_msg_queue_free(struct msg_queue *msq);
349 int security_msg_queue_associate(struct msg_queue *msq, int msqflg);
350 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd);
351 int security_msg_queue_msgsnd(struct msg_queue *msq,
352 struct msg_msg *msg, int msqflg);
353 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
354 struct task_struct *target, long type, int mode);
355 int security_shm_alloc(struct shmid_kernel *shp);
356 void security_shm_free(struct shmid_kernel *shp);
357 int security_shm_associate(struct shmid_kernel *shp, int shmflg);
358 int security_shm_shmctl(struct shmid_kernel *shp, int cmd);
359 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg);
360 int security_sem_alloc(struct sem_array *sma);
361 void security_sem_free(struct sem_array *sma);
362 int security_sem_associate(struct sem_array *sma, int semflg);
363 int security_sem_semctl(struct sem_array *sma, int cmd);
364 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
365 unsigned nsops, int alter);
366 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
367 int security_getprocattr(struct task_struct *p, char *name, char **value);
368 int security_setprocattr(const char *name, void *value, size_t size);
369 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
370 int security_ismaclabel(const char *name);
371 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
372 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
373 void security_release_secctx(char *secdata, u32 seclen);
375 void security_inode_invalidate_secctx(struct inode *inode);
376 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
377 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
378 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
379 #else /* CONFIG_SECURITY */
380 struct security_mnt_opts {
383 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
387 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
392 * This is the default capabilities functionality. Most of these functions
393 * are just stubbed out, but a few must call the proper capable code.
396 static inline int security_init(void)
401 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
406 static inline int security_binder_transaction(struct task_struct *from,
407 struct task_struct *to)
412 static inline int security_binder_transfer_binder(struct task_struct *from,
413 struct task_struct *to)
418 static inline int security_binder_transfer_file(struct task_struct *from,
419 struct task_struct *to,
425 static inline int security_ptrace_access_check(struct task_struct *child,
428 return cap_ptrace_access_check(child, mode);
431 static inline int security_ptrace_traceme(struct task_struct *parent)
433 return cap_ptrace_traceme(parent);
436 static inline int security_capget(struct task_struct *target,
437 kernel_cap_t *effective,
438 kernel_cap_t *inheritable,
439 kernel_cap_t *permitted)
441 return cap_capget(target, effective, inheritable, permitted);
444 static inline int security_capset(struct cred *new,
445 const struct cred *old,
446 const kernel_cap_t *effective,
447 const kernel_cap_t *inheritable,
448 const kernel_cap_t *permitted)
450 return cap_capset(new, old, effective, inheritable, permitted);
453 static inline int security_capable(const struct cred *cred,
454 struct user_namespace *ns, int cap)
456 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
459 static inline int security_capable_noaudit(const struct cred *cred,
460 struct user_namespace *ns, int cap) {
461 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
464 static inline int security_quotactl(int cmds, int type, int id,
465 struct super_block *sb)
470 static inline int security_quota_on(struct dentry *dentry)
475 static inline int security_syslog(int type)
480 static inline int security_settime64(const struct timespec64 *ts,
481 const struct timezone *tz)
483 return cap_settime(ts, tz);
486 static inline int security_settime(const struct timespec *ts,
487 const struct timezone *tz)
489 struct timespec64 ts64 = timespec_to_timespec64(*ts);
491 return cap_settime(&ts64, tz);
494 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
496 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
499 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
501 return cap_bprm_set_creds(bprm);
504 static inline int security_bprm_check(struct linux_binprm *bprm)
509 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
513 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
517 static inline int security_bprm_secureexec(struct linux_binprm *bprm)
519 return cap_bprm_secureexec(bprm);
522 static inline int security_sb_alloc(struct super_block *sb)
527 static inline void security_sb_free(struct super_block *sb)
530 static inline int security_sb_copy_data(char *orig, char *copy)
535 static inline int security_sb_remount(struct super_block *sb, void *data)
540 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
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,
575 struct security_mnt_opts *opts,
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)
588 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
593 static inline int security_inode_alloc(struct inode *inode)
598 static inline void security_inode_free(struct inode *inode)
601 static inline int security_dentry_init_security(struct dentry *dentry,
603 const struct qstr *name,
610 static inline int security_dentry_create_files_as(struct dentry *dentry,
611 int mode, struct qstr *name,
612 const struct cred *old,
619 static inline int security_inode_init_security(struct inode *inode,
621 const struct qstr *qstr,
622 const initxattrs xattrs,
628 static inline int security_old_inode_init_security(struct inode *inode,
630 const struct qstr *qstr,
632 void **value, size_t *len)
637 static inline int security_inode_create(struct inode *dir,
638 struct dentry *dentry,
644 static inline int security_inode_link(struct dentry *old_dentry,
646 struct dentry *new_dentry)
651 static inline int security_inode_unlink(struct inode *dir,
652 struct dentry *dentry)
657 static inline int security_inode_symlink(struct inode *dir,
658 struct dentry *dentry,
659 const char *old_name)
664 static inline int security_inode_mkdir(struct inode *dir,
665 struct dentry *dentry,
671 static inline int security_inode_rmdir(struct inode *dir,
672 struct dentry *dentry)
677 static inline int security_inode_mknod(struct inode *dir,
678 struct dentry *dentry,
684 static inline int security_inode_rename(struct inode *old_dir,
685 struct dentry *old_dentry,
686 struct inode *new_dir,
687 struct dentry *new_dentry,
693 static inline int security_inode_readlink(struct dentry *dentry)
698 static inline int security_inode_follow_link(struct dentry *dentry,
705 static inline int security_inode_permission(struct inode *inode, int mask)
710 static inline int security_inode_setattr(struct dentry *dentry,
716 static inline int security_inode_getattr(const struct path *path)
721 static inline int security_inode_setxattr(struct dentry *dentry,
722 const char *name, const void *value, size_t size, int flags)
724 return cap_inode_setxattr(dentry, name, value, size, flags);
727 static inline void security_inode_post_setxattr(struct dentry *dentry,
728 const char *name, const void *value, size_t size, int flags)
731 static inline int security_inode_getxattr(struct dentry *dentry,
737 static inline int security_inode_listxattr(struct dentry *dentry)
742 static inline int security_inode_removexattr(struct dentry *dentry,
745 return cap_inode_removexattr(dentry, name);
748 static inline int security_inode_need_killpriv(struct dentry *dentry)
750 return cap_inode_need_killpriv(dentry);
753 static inline int security_inode_killpriv(struct dentry *dentry)
755 return cap_inode_killpriv(dentry);
758 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
763 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
768 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
773 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
778 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
783 static inline int security_inode_copy_up_xattr(const char *name)
788 static inline int security_file_permission(struct file *file, int mask)
793 static inline int security_file_alloc(struct file *file)
798 static inline void security_file_free(struct file *file)
801 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
807 static inline int security_mmap_file(struct file *file, unsigned long prot,
813 static inline int security_mmap_addr(unsigned long addr)
815 return cap_mmap_addr(addr);
818 static inline int security_file_mprotect(struct vm_area_struct *vma,
819 unsigned long reqprot,
825 static inline int security_file_lock(struct file *file, unsigned int cmd)
830 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
836 static inline void security_file_set_fowner(struct file *file)
841 static inline int security_file_send_sigiotask(struct task_struct *tsk,
842 struct fown_struct *fown,
848 static inline int security_file_receive(struct file *file)
853 static inline int security_file_open(struct file *file,
854 const struct cred *cred)
859 static inline int security_task_create(unsigned long clone_flags)
864 static inline void security_task_free(struct task_struct *task)
867 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
872 static inline void security_cred_free(struct cred *cred)
875 static inline int security_prepare_creds(struct cred *new,
876 const struct cred *old,
882 static inline void security_transfer_creds(struct cred *new,
883 const struct cred *old)
887 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
892 static inline int security_kernel_create_files_as(struct cred *cred,
898 static inline int security_kernel_module_request(char *kmod_name)
903 static inline int security_kernel_read_file(struct file *file,
904 enum kernel_read_file_id id)
909 static inline int security_kernel_post_read_file(struct file *file,
910 char *buf, loff_t size,
911 enum kernel_read_file_id id)
916 static inline int security_task_fix_setuid(struct cred *new,
917 const struct cred *old,
920 return cap_task_fix_setuid(new, old, flags);
923 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
928 static inline int security_task_getpgid(struct task_struct *p)
933 static inline int security_task_getsid(struct task_struct *p)
938 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
943 static inline int security_task_setnice(struct task_struct *p, int nice)
945 return cap_task_setnice(p, nice);
948 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
950 return cap_task_setioprio(p, ioprio);
953 static inline int security_task_getioprio(struct task_struct *p)
958 static inline int security_task_prlimit(const struct cred *cred,
959 const struct cred *tcred,
965 static inline int security_task_setrlimit(struct task_struct *p,
966 unsigned int resource,
967 struct rlimit *new_rlim)
972 static inline int security_task_setscheduler(struct task_struct *p)
974 return cap_task_setscheduler(p);
977 static inline int security_task_getscheduler(struct task_struct *p)
982 static inline int security_task_movememory(struct task_struct *p)
987 static inline int security_task_kill(struct task_struct *p,
988 struct siginfo *info, int sig,
994 static inline int security_task_prctl(int option, unsigned long arg2,
999 return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1002 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1005 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1011 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1016 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1021 static inline void security_msg_msg_free(struct msg_msg *msg)
1024 static inline int security_msg_queue_alloc(struct msg_queue *msq)
1029 static inline void security_msg_queue_free(struct msg_queue *msq)
1032 static inline int security_msg_queue_associate(struct msg_queue *msq,
1038 static inline int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1043 static inline int security_msg_queue_msgsnd(struct msg_queue *msq,
1044 struct msg_msg *msg, int msqflg)
1049 static inline int security_msg_queue_msgrcv(struct msg_queue *msq,
1050 struct msg_msg *msg,
1051 struct task_struct *target,
1052 long type, int mode)
1057 static inline int security_shm_alloc(struct shmid_kernel *shp)
1062 static inline void security_shm_free(struct shmid_kernel *shp)
1065 static inline int security_shm_associate(struct shmid_kernel *shp,
1071 static inline int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1076 static inline int security_shm_shmat(struct shmid_kernel *shp,
1077 char __user *shmaddr, int shmflg)
1082 static inline int security_sem_alloc(struct sem_array *sma)
1087 static inline void security_sem_free(struct sem_array *sma)
1090 static inline int security_sem_associate(struct sem_array *sma, int semflg)
1095 static inline int security_sem_semctl(struct sem_array *sma, int cmd)
1100 static inline int security_sem_semop(struct sem_array *sma,
1101 struct sembuf *sops, unsigned nsops,
1107 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1110 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1115 static inline int security_setprocattr(char *name, void *value, size_t size)
1120 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1125 static inline int security_ismaclabel(const char *name)
1130 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1135 static inline int security_secctx_to_secid(const char *secdata,
1142 static inline void security_release_secctx(char *secdata, u32 seclen)
1146 static inline void security_inode_invalidate_secctx(struct inode *inode)
1150 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1154 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1158 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1162 #endif /* CONFIG_SECURITY */
1164 #ifdef CONFIG_SECURITY_NETWORK
1166 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1167 int security_unix_may_send(struct socket *sock, struct socket *other);
1168 int security_socket_create(int family, int type, int protocol, int kern);
1169 int security_socket_post_create(struct socket *sock, int family,
1170 int type, int protocol, int kern);
1171 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1172 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1173 int security_socket_listen(struct socket *sock, int backlog);
1174 int security_socket_accept(struct socket *sock, struct socket *newsock);
1175 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1176 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1177 int size, int flags);
1178 int security_socket_getsockname(struct socket *sock);
1179 int security_socket_getpeername(struct socket *sock);
1180 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1181 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1182 int security_socket_shutdown(struct socket *sock, int how);
1183 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1184 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1185 int __user *optlen, unsigned len);
1186 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1187 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1188 void security_sk_free(struct sock *sk);
1189 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1190 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1191 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1192 void security_sock_graft(struct sock*sk, struct socket *parent);
1193 int security_inet_conn_request(struct sock *sk,
1194 struct sk_buff *skb, struct request_sock *req);
1195 void security_inet_csk_clone(struct sock *newsk,
1196 const struct request_sock *req);
1197 void security_inet_conn_established(struct sock *sk,
1198 struct sk_buff *skb);
1199 int security_secmark_relabel_packet(u32 secid);
1200 void security_secmark_refcount_inc(void);
1201 void security_secmark_refcount_dec(void);
1202 int security_tun_dev_alloc_security(void **security);
1203 void security_tun_dev_free_security(void *security);
1204 int security_tun_dev_create(void);
1205 int security_tun_dev_attach_queue(void *security);
1206 int security_tun_dev_attach(struct sock *sk, void *security);
1207 int security_tun_dev_open(void *security);
1209 #else /* CONFIG_SECURITY_NETWORK */
1210 static inline int security_unix_stream_connect(struct sock *sock,
1217 static inline int security_unix_may_send(struct socket *sock,
1218 struct socket *other)
1223 static inline int security_socket_create(int family, int type,
1224 int protocol, int kern)
1229 static inline int security_socket_post_create(struct socket *sock,
1232 int protocol, int kern)
1237 static inline int security_socket_bind(struct socket *sock,
1238 struct sockaddr *address,
1244 static inline int security_socket_connect(struct socket *sock,
1245 struct sockaddr *address,
1251 static inline int security_socket_listen(struct socket *sock, int backlog)
1256 static inline int security_socket_accept(struct socket *sock,
1257 struct socket *newsock)
1262 static inline int security_socket_sendmsg(struct socket *sock,
1263 struct msghdr *msg, int size)
1268 static inline int security_socket_recvmsg(struct socket *sock,
1269 struct msghdr *msg, int size,
1275 static inline int security_socket_getsockname(struct socket *sock)
1280 static inline int security_socket_getpeername(struct socket *sock)
1285 static inline int security_socket_getsockopt(struct socket *sock,
1286 int level, int optname)
1291 static inline int security_socket_setsockopt(struct socket *sock,
1292 int level, int optname)
1297 static inline int security_socket_shutdown(struct socket *sock, int how)
1301 static inline int security_sock_rcv_skb(struct sock *sk,
1302 struct sk_buff *skb)
1307 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1308 int __user *optlen, unsigned len)
1310 return -ENOPROTOOPT;
1313 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1315 return -ENOPROTOOPT;
1318 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1323 static inline void security_sk_free(struct sock *sk)
1327 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1331 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1335 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1339 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1343 static inline int security_inet_conn_request(struct sock *sk,
1344 struct sk_buff *skb, struct request_sock *req)
1349 static inline void security_inet_csk_clone(struct sock *newsk,
1350 const struct request_sock *req)
1354 static inline void security_inet_conn_established(struct sock *sk,
1355 struct sk_buff *skb)
1359 static inline int security_secmark_relabel_packet(u32 secid)
1364 static inline void security_secmark_refcount_inc(void)
1368 static inline void security_secmark_refcount_dec(void)
1372 static inline int security_tun_dev_alloc_security(void **security)
1377 static inline void security_tun_dev_free_security(void *security)
1381 static inline int security_tun_dev_create(void)
1386 static inline int security_tun_dev_attach_queue(void *security)
1391 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1396 static inline int security_tun_dev_open(void *security)
1400 #endif /* CONFIG_SECURITY_NETWORK */
1402 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1404 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1405 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1406 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1407 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1408 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1409 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1410 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1411 struct xfrm_sec_ctx *polsec, u32 secid);
1412 int security_xfrm_state_delete(struct xfrm_state *x);
1413 void security_xfrm_state_free(struct xfrm_state *x);
1414 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1415 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1416 struct xfrm_policy *xp,
1417 const struct flowi *fl);
1418 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1419 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1421 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1423 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1424 struct xfrm_user_sec_ctx *sec_ctx,
1430 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1435 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1439 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1444 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1445 struct xfrm_user_sec_ctx *sec_ctx)
1450 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1451 struct xfrm_sec_ctx *polsec, u32 secid)
1456 static inline void security_xfrm_state_free(struct xfrm_state *x)
1460 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1465 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1470 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1471 struct xfrm_policy *xp, const struct flowi *fl)
1476 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1481 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1485 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1487 #ifdef CONFIG_SECURITY_PATH
1488 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1489 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1490 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1491 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1493 int security_path_truncate(const struct path *path);
1494 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1495 const char *old_name);
1496 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1497 struct dentry *new_dentry);
1498 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1499 const struct path *new_dir, struct dentry *new_dentry,
1500 unsigned int flags);
1501 int security_path_chmod(const struct path *path, umode_t mode);
1502 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1503 int security_path_chroot(const struct path *path);
1504 #else /* CONFIG_SECURITY_PATH */
1505 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1510 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1516 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1521 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1522 umode_t mode, unsigned int dev)
1527 static inline int security_path_truncate(const struct path *path)
1532 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1533 const char *old_name)
1538 static inline int security_path_link(struct dentry *old_dentry,
1539 const struct path *new_dir,
1540 struct dentry *new_dentry)
1545 static inline int security_path_rename(const struct path *old_dir,
1546 struct dentry *old_dentry,
1547 const struct path *new_dir,
1548 struct dentry *new_dentry,
1554 static inline int security_path_chmod(const struct path *path, umode_t mode)
1559 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1564 static inline int security_path_chroot(const struct path *path)
1568 #endif /* CONFIG_SECURITY_PATH */
1571 #ifdef CONFIG_SECURITY
1573 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1574 void security_key_free(struct key *key);
1575 int security_key_permission(key_ref_t key_ref,
1576 const struct cred *cred, unsigned perm);
1577 int security_key_getsecurity(struct key *key, char **_buffer);
1581 static inline int security_key_alloc(struct key *key,
1582 const struct cred *cred,
1583 unsigned long flags)
1588 static inline void security_key_free(struct key *key)
1592 static inline int security_key_permission(key_ref_t key_ref,
1593 const struct cred *cred,
1599 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1606 #endif /* CONFIG_KEYS */
1609 #ifdef CONFIG_SECURITY
1610 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1611 int security_audit_rule_known(struct audit_krule *krule);
1612 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1613 struct audit_context *actx);
1614 void security_audit_rule_free(void *lsmrule);
1618 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1624 static inline int security_audit_rule_known(struct audit_krule *krule)
1629 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1630 void *lsmrule, struct audit_context *actx)
1635 static inline void security_audit_rule_free(void *lsmrule)
1638 #endif /* CONFIG_SECURITY */
1639 #endif /* CONFIG_AUDIT */
1641 #ifdef CONFIG_SECURITYFS
1643 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1644 struct dentry *parent, void *data,
1645 const struct file_operations *fops);
1646 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1647 extern void securityfs_remove(struct dentry *dentry);
1649 #else /* CONFIG_SECURITYFS */
1651 static inline struct dentry *securityfs_create_dir(const char *name,
1652 struct dentry *parent)
1654 return ERR_PTR(-ENODEV);
1657 static inline struct dentry *securityfs_create_file(const char *name,
1659 struct dentry *parent,
1661 const struct file_operations *fops)
1663 return ERR_PTR(-ENODEV);
1666 static inline void securityfs_remove(struct dentry *dentry)
1671 #ifdef CONFIG_SECURITY
1673 static inline char *alloc_secdata(void)
1675 return (char *)get_zeroed_page(GFP_KERNEL);
1678 static inline void free_secdata(void *secdata)
1680 free_page((unsigned long)secdata);
1685 static inline char *alloc_secdata(void)
1690 static inline void free_secdata(void *secdata)
1692 #endif /* CONFIG_SECURITY */
1694 #endif /* ! __LINUX_SECURITY_H */