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>
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);
162 #ifdef CONFIG_SECURITY
164 struct security_mnt_opts {
170 int call_lsm_notifier(enum lsm_event event, void *data);
171 int register_lsm_notifier(struct notifier_block *nb);
172 int unregister_lsm_notifier(struct notifier_block *nb);
174 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
176 opts->mnt_opts = NULL;
177 opts->mnt_opts_flags = NULL;
178 opts->num_mnt_opts = 0;
181 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
185 for (i = 0; i < opts->num_mnt_opts; i++)
186 kfree(opts->mnt_opts[i]);
187 kfree(opts->mnt_opts);
188 opts->mnt_opts = NULL;
189 kfree(opts->mnt_opts_flags);
190 opts->mnt_opts_flags = NULL;
191 opts->num_mnt_opts = 0;
195 extern int security_init(void);
197 /* Security operations */
198 int security_binder_set_context_mgr(struct task_struct *mgr);
199 int security_binder_transaction(struct task_struct *from,
200 struct task_struct *to);
201 int security_binder_transfer_binder(struct task_struct *from,
202 struct task_struct *to);
203 int security_binder_transfer_file(struct task_struct *from,
204 struct task_struct *to, struct file *file);
205 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
206 int security_ptrace_traceme(struct task_struct *parent);
207 int security_capget(struct task_struct *target,
208 kernel_cap_t *effective,
209 kernel_cap_t *inheritable,
210 kernel_cap_t *permitted);
211 int security_capset(struct cred *new, const struct cred *old,
212 const kernel_cap_t *effective,
213 const kernel_cap_t *inheritable,
214 const kernel_cap_t *permitted);
215 int security_capable(const struct cred *cred, struct user_namespace *ns,
217 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
219 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
220 int security_quota_on(struct dentry *dentry);
221 int security_syslog(int type);
222 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
223 static inline int security_settime(const struct timespec *ts, const struct timezone *tz)
225 struct timespec64 ts64 = timespec_to_timespec64(*ts);
227 return security_settime64(&ts64, tz);
229 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
230 int security_bprm_set_creds(struct linux_binprm *bprm);
231 int security_bprm_check(struct linux_binprm *bprm);
232 void security_bprm_committing_creds(struct linux_binprm *bprm);
233 void security_bprm_committed_creds(struct linux_binprm *bprm);
234 int security_sb_alloc(struct super_block *sb);
235 void security_sb_free(struct super_block *sb);
236 int security_sb_copy_data(char *orig, char *copy);
237 int security_sb_remount(struct super_block *sb, void *data);
238 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
239 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
240 int security_sb_statfs(struct dentry *dentry);
241 int security_sb_mount(const char *dev_name, const struct path *path,
242 const char *type, unsigned long flags, void *data);
243 int security_sb_umount(struct vfsmount *mnt, int flags);
244 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
245 int security_sb_set_mnt_opts(struct super_block *sb,
246 struct security_mnt_opts *opts,
247 unsigned long kern_flags,
248 unsigned long *set_kern_flags);
249 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
250 struct super_block *newsb,
251 unsigned long kern_flags,
252 unsigned long *set_kern_flags);
253 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
254 int security_dentry_init_security(struct dentry *dentry, int mode,
255 const struct qstr *name, void **ctx,
257 int security_dentry_create_files_as(struct dentry *dentry, int mode,
259 const struct cred *old,
262 int security_inode_alloc(struct inode *inode);
263 void security_inode_free(struct inode *inode);
264 int security_inode_init_security(struct inode *inode, struct inode *dir,
265 const struct qstr *qstr,
266 initxattrs initxattrs, void *fs_data);
267 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
268 const struct qstr *qstr, const char **name,
269 void **value, size_t *len);
270 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
271 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
272 struct dentry *new_dentry);
273 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
274 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
275 const char *old_name);
276 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
277 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
278 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
279 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
280 struct inode *new_dir, struct dentry *new_dentry,
282 int security_inode_readlink(struct dentry *dentry);
283 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
285 int security_inode_permission(struct inode *inode, int mask);
286 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
287 int security_inode_getattr(const struct path *path);
288 int security_inode_setxattr(struct dentry *dentry, const char *name,
289 const void *value, size_t size, int flags);
290 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
291 const void *value, size_t size, int flags);
292 int security_inode_getxattr(struct dentry *dentry, const char *name);
293 int security_inode_listxattr(struct dentry *dentry);
294 int security_inode_removexattr(struct dentry *dentry, const char *name);
295 int security_inode_need_killpriv(struct dentry *dentry);
296 int security_inode_killpriv(struct dentry *dentry);
297 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
298 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
299 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
300 void security_inode_getsecid(struct inode *inode, u32 *secid);
301 int security_inode_copy_up(struct dentry *src, struct cred **new);
302 int security_inode_copy_up_xattr(const char *name);
303 int security_file_permission(struct file *file, int mask);
304 int security_file_alloc(struct file *file);
305 void security_file_free(struct file *file);
306 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
307 int security_mmap_file(struct file *file, unsigned long prot,
308 unsigned long flags);
309 int security_mmap_addr(unsigned long addr);
310 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
312 int security_file_lock(struct file *file, unsigned int cmd);
313 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
314 void security_file_set_fowner(struct file *file);
315 int security_file_send_sigiotask(struct task_struct *tsk,
316 struct fown_struct *fown, int sig);
317 int security_file_receive(struct file *file);
318 int security_file_open(struct file *file, const struct cred *cred);
319 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
320 void security_task_free(struct task_struct *task);
321 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
322 void security_cred_free(struct cred *cred);
323 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
324 void security_transfer_creds(struct cred *new, const struct cred *old);
325 int security_kernel_act_as(struct cred *new, u32 secid);
326 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
327 int security_kernel_module_request(char *kmod_name);
328 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
329 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
330 enum kernel_read_file_id id);
331 int security_task_fix_setuid(struct cred *new, const struct cred *old,
333 int security_task_setpgid(struct task_struct *p, pid_t pgid);
334 int security_task_getpgid(struct task_struct *p);
335 int security_task_getsid(struct task_struct *p);
336 void security_task_getsecid(struct task_struct *p, u32 *secid);
337 int security_task_setnice(struct task_struct *p, int nice);
338 int security_task_setioprio(struct task_struct *p, int ioprio);
339 int security_task_getioprio(struct task_struct *p);
340 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
342 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
343 struct rlimit *new_rlim);
344 int security_task_setscheduler(struct task_struct *p);
345 int security_task_getscheduler(struct task_struct *p);
346 int security_task_movememory(struct task_struct *p);
347 int security_task_kill(struct task_struct *p, struct siginfo *info,
349 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
350 unsigned long arg4, unsigned long arg5);
351 void security_task_to_inode(struct task_struct *p, struct inode *inode);
352 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
353 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
354 int security_msg_msg_alloc(struct msg_msg *msg);
355 void security_msg_msg_free(struct msg_msg *msg);
356 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
357 void security_msg_queue_free(struct kern_ipc_perm *msq);
358 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
359 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
360 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
361 struct msg_msg *msg, int msqflg);
362 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
363 struct task_struct *target, long type, int mode);
364 int security_shm_alloc(struct kern_ipc_perm *shp);
365 void security_shm_free(struct kern_ipc_perm *shp);
366 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
367 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
368 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
369 int security_sem_alloc(struct kern_ipc_perm *sma);
370 void security_sem_free(struct kern_ipc_perm *sma);
371 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
372 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
373 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
374 unsigned nsops, int alter);
375 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
376 int security_getprocattr(struct task_struct *p, char *name, char **value);
377 int security_setprocattr(const char *name, void *value, size_t size);
378 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
379 int security_ismaclabel(const char *name);
380 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
381 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
382 void security_release_secctx(char *secdata, u32 seclen);
384 void security_inode_invalidate_secctx(struct inode *inode);
385 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
386 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
387 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
388 #else /* CONFIG_SECURITY */
389 struct security_mnt_opts {
392 static inline int call_lsm_notifier(enum lsm_event event, void *data)
397 static inline int register_lsm_notifier(struct notifier_block *nb)
402 static inline int unregister_lsm_notifier(struct notifier_block *nb)
407 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
411 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
416 * This is the default capabilities functionality. Most of these functions
417 * are just stubbed out, but a few must call the proper capable code.
420 static inline int security_init(void)
425 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
430 static inline int security_binder_transaction(struct task_struct *from,
431 struct task_struct *to)
436 static inline int security_binder_transfer_binder(struct task_struct *from,
437 struct task_struct *to)
442 static inline int security_binder_transfer_file(struct task_struct *from,
443 struct task_struct *to,
449 static inline int security_ptrace_access_check(struct task_struct *child,
452 return cap_ptrace_access_check(child, mode);
455 static inline int security_ptrace_traceme(struct task_struct *parent)
457 return cap_ptrace_traceme(parent);
460 static inline int security_capget(struct task_struct *target,
461 kernel_cap_t *effective,
462 kernel_cap_t *inheritable,
463 kernel_cap_t *permitted)
465 return cap_capget(target, effective, inheritable, permitted);
468 static inline int security_capset(struct cred *new,
469 const struct cred *old,
470 const kernel_cap_t *effective,
471 const kernel_cap_t *inheritable,
472 const kernel_cap_t *permitted)
474 return cap_capset(new, old, effective, inheritable, permitted);
477 static inline int security_capable(const struct cred *cred,
478 struct user_namespace *ns, int cap)
480 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
483 static inline int security_capable_noaudit(const struct cred *cred,
484 struct user_namespace *ns, int cap) {
485 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
488 static inline int security_quotactl(int cmds, int type, int id,
489 struct super_block *sb)
494 static inline int security_quota_on(struct dentry *dentry)
499 static inline int security_syslog(int type)
504 static inline int security_settime64(const struct timespec64 *ts,
505 const struct timezone *tz)
507 return cap_settime(ts, tz);
510 static inline int security_settime(const struct timespec *ts,
511 const struct timezone *tz)
513 struct timespec64 ts64 = timespec_to_timespec64(*ts);
515 return cap_settime(&ts64, tz);
518 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
520 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
523 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
525 return cap_bprm_set_creds(bprm);
528 static inline int security_bprm_check(struct linux_binprm *bprm)
533 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
537 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
541 static inline int security_sb_alloc(struct super_block *sb)
546 static inline void security_sb_free(struct super_block *sb)
549 static inline int security_sb_copy_data(char *orig, char *copy)
554 static inline int security_sb_remount(struct super_block *sb, void *data)
559 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
564 static inline int security_sb_show_options(struct seq_file *m,
565 struct super_block *sb)
570 static inline int security_sb_statfs(struct dentry *dentry)
575 static inline int security_sb_mount(const char *dev_name, const struct path *path,
576 const char *type, unsigned long flags,
582 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
587 static inline int security_sb_pivotroot(const struct path *old_path,
588 const struct path *new_path)
593 static inline int security_sb_set_mnt_opts(struct super_block *sb,
594 struct security_mnt_opts *opts,
595 unsigned long kern_flags,
596 unsigned long *set_kern_flags)
601 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
602 struct super_block *newsb,
603 unsigned long kern_flags,
604 unsigned long *set_kern_flags)
609 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
614 static inline int security_inode_alloc(struct inode *inode)
619 static inline void security_inode_free(struct inode *inode)
622 static inline int security_dentry_init_security(struct dentry *dentry,
624 const struct qstr *name,
631 static inline int security_dentry_create_files_as(struct dentry *dentry,
632 int mode, struct qstr *name,
633 const struct cred *old,
640 static inline int security_inode_init_security(struct inode *inode,
642 const struct qstr *qstr,
643 const initxattrs xattrs,
649 static inline int security_old_inode_init_security(struct inode *inode,
651 const struct qstr *qstr,
653 void **value, size_t *len)
658 static inline int security_inode_create(struct inode *dir,
659 struct dentry *dentry,
665 static inline int security_inode_link(struct dentry *old_dentry,
667 struct dentry *new_dentry)
672 static inline int security_inode_unlink(struct inode *dir,
673 struct dentry *dentry)
678 static inline int security_inode_symlink(struct inode *dir,
679 struct dentry *dentry,
680 const char *old_name)
685 static inline int security_inode_mkdir(struct inode *dir,
686 struct dentry *dentry,
692 static inline int security_inode_rmdir(struct inode *dir,
693 struct dentry *dentry)
698 static inline int security_inode_mknod(struct inode *dir,
699 struct dentry *dentry,
705 static inline int security_inode_rename(struct inode *old_dir,
706 struct dentry *old_dentry,
707 struct inode *new_dir,
708 struct dentry *new_dentry,
714 static inline int security_inode_readlink(struct dentry *dentry)
719 static inline int security_inode_follow_link(struct dentry *dentry,
726 static inline int security_inode_permission(struct inode *inode, int mask)
731 static inline int security_inode_setattr(struct dentry *dentry,
737 static inline int security_inode_getattr(const struct path *path)
742 static inline int security_inode_setxattr(struct dentry *dentry,
743 const char *name, const void *value, size_t size, int flags)
745 return cap_inode_setxattr(dentry, name, value, size, flags);
748 static inline void security_inode_post_setxattr(struct dentry *dentry,
749 const char *name, const void *value, size_t size, int flags)
752 static inline int security_inode_getxattr(struct dentry *dentry,
758 static inline int security_inode_listxattr(struct dentry *dentry)
763 static inline int security_inode_removexattr(struct dentry *dentry,
766 return cap_inode_removexattr(dentry, name);
769 static inline int security_inode_need_killpriv(struct dentry *dentry)
771 return cap_inode_need_killpriv(dentry);
774 static inline int security_inode_killpriv(struct dentry *dentry)
776 return cap_inode_killpriv(dentry);
779 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
784 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
789 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
794 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
799 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
804 static inline int security_inode_copy_up_xattr(const char *name)
809 static inline int security_file_permission(struct file *file, int mask)
814 static inline int security_file_alloc(struct file *file)
819 static inline void security_file_free(struct file *file)
822 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
828 static inline int security_mmap_file(struct file *file, unsigned long prot,
834 static inline int security_mmap_addr(unsigned long addr)
836 return cap_mmap_addr(addr);
839 static inline int security_file_mprotect(struct vm_area_struct *vma,
840 unsigned long reqprot,
846 static inline int security_file_lock(struct file *file, unsigned int cmd)
851 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
857 static inline void security_file_set_fowner(struct file *file)
862 static inline int security_file_send_sigiotask(struct task_struct *tsk,
863 struct fown_struct *fown,
869 static inline int security_file_receive(struct file *file)
874 static inline int security_file_open(struct file *file,
875 const struct cred *cred)
880 static inline int security_task_alloc(struct task_struct *task,
881 unsigned long clone_flags)
886 static inline void security_task_free(struct task_struct *task)
889 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
894 static inline void security_cred_free(struct cred *cred)
897 static inline int security_prepare_creds(struct cred *new,
898 const struct cred *old,
904 static inline void security_transfer_creds(struct cred *new,
905 const struct cred *old)
909 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
914 static inline int security_kernel_create_files_as(struct cred *cred,
920 static inline int security_kernel_module_request(char *kmod_name)
925 static inline int security_kernel_read_file(struct file *file,
926 enum kernel_read_file_id id)
931 static inline int security_kernel_post_read_file(struct file *file,
932 char *buf, loff_t size,
933 enum kernel_read_file_id id)
938 static inline int security_task_fix_setuid(struct cred *new,
939 const struct cred *old,
942 return cap_task_fix_setuid(new, old, flags);
945 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
950 static inline int security_task_getpgid(struct task_struct *p)
955 static inline int security_task_getsid(struct task_struct *p)
960 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
965 static inline int security_task_setnice(struct task_struct *p, int nice)
967 return cap_task_setnice(p, nice);
970 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
972 return cap_task_setioprio(p, ioprio);
975 static inline int security_task_getioprio(struct task_struct *p)
980 static inline int security_task_prlimit(const struct cred *cred,
981 const struct cred *tcred,
987 static inline int security_task_setrlimit(struct task_struct *p,
988 unsigned int resource,
989 struct rlimit *new_rlim)
994 static inline int security_task_setscheduler(struct task_struct *p)
996 return cap_task_setscheduler(p);
999 static inline int security_task_getscheduler(struct task_struct *p)
1004 static inline int security_task_movememory(struct task_struct *p)
1009 static inline int security_task_kill(struct task_struct *p,
1010 struct siginfo *info, int sig,
1016 static inline int security_task_prctl(int option, unsigned long arg2,
1021 return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1024 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1027 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1033 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1038 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1043 static inline void security_msg_msg_free(struct msg_msg *msg)
1046 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1051 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1054 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1060 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1065 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1066 struct msg_msg *msg, int msqflg)
1071 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1072 struct msg_msg *msg,
1073 struct task_struct *target,
1074 long type, int mode)
1079 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1084 static inline void security_shm_free(struct kern_ipc_perm *shp)
1087 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1093 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1098 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1099 char __user *shmaddr, int shmflg)
1104 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1109 static inline void security_sem_free(struct kern_ipc_perm *sma)
1112 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1117 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1122 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1123 struct sembuf *sops, unsigned nsops,
1129 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1132 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1137 static inline int security_setprocattr(char *name, void *value, size_t size)
1142 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1147 static inline int security_ismaclabel(const char *name)
1152 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1157 static inline int security_secctx_to_secid(const char *secdata,
1164 static inline void security_release_secctx(char *secdata, u32 seclen)
1168 static inline void security_inode_invalidate_secctx(struct inode *inode)
1172 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1176 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1180 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1184 #endif /* CONFIG_SECURITY */
1186 #ifdef CONFIG_SECURITY_NETWORK
1188 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1189 int security_unix_may_send(struct socket *sock, struct socket *other);
1190 int security_socket_create(int family, int type, int protocol, int kern);
1191 int security_socket_post_create(struct socket *sock, int family,
1192 int type, int protocol, int kern);
1193 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1194 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1195 int security_socket_listen(struct socket *sock, int backlog);
1196 int security_socket_accept(struct socket *sock, struct socket *newsock);
1197 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1198 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1199 int size, int flags);
1200 int security_socket_getsockname(struct socket *sock);
1201 int security_socket_getpeername(struct socket *sock);
1202 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1203 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1204 int security_socket_shutdown(struct socket *sock, int how);
1205 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1206 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1207 int __user *optlen, unsigned len);
1208 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1209 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1210 void security_sk_free(struct sock *sk);
1211 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1212 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1213 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1214 void security_sock_graft(struct sock*sk, struct socket *parent);
1215 int security_inet_conn_request(struct sock *sk,
1216 struct sk_buff *skb, struct request_sock *req);
1217 void security_inet_csk_clone(struct sock *newsk,
1218 const struct request_sock *req);
1219 void security_inet_conn_established(struct sock *sk,
1220 struct sk_buff *skb);
1221 int security_secmark_relabel_packet(u32 secid);
1222 void security_secmark_refcount_inc(void);
1223 void security_secmark_refcount_dec(void);
1224 int security_tun_dev_alloc_security(void **security);
1225 void security_tun_dev_free_security(void *security);
1226 int security_tun_dev_create(void);
1227 int security_tun_dev_attach_queue(void *security);
1228 int security_tun_dev_attach(struct sock *sk, void *security);
1229 int security_tun_dev_open(void *security);
1230 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1231 int security_sctp_bind_connect(struct sock *sk, int optname,
1232 struct sockaddr *address, int addrlen);
1233 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1234 struct sock *newsk);
1236 #else /* CONFIG_SECURITY_NETWORK */
1237 static inline int security_unix_stream_connect(struct sock *sock,
1244 static inline int security_unix_may_send(struct socket *sock,
1245 struct socket *other)
1250 static inline int security_socket_create(int family, int type,
1251 int protocol, int kern)
1256 static inline int security_socket_post_create(struct socket *sock,
1259 int protocol, int kern)
1264 static inline int security_socket_bind(struct socket *sock,
1265 struct sockaddr *address,
1271 static inline int security_socket_connect(struct socket *sock,
1272 struct sockaddr *address,
1278 static inline int security_socket_listen(struct socket *sock, int backlog)
1283 static inline int security_socket_accept(struct socket *sock,
1284 struct socket *newsock)
1289 static inline int security_socket_sendmsg(struct socket *sock,
1290 struct msghdr *msg, int size)
1295 static inline int security_socket_recvmsg(struct socket *sock,
1296 struct msghdr *msg, int size,
1302 static inline int security_socket_getsockname(struct socket *sock)
1307 static inline int security_socket_getpeername(struct socket *sock)
1312 static inline int security_socket_getsockopt(struct socket *sock,
1313 int level, int optname)
1318 static inline int security_socket_setsockopt(struct socket *sock,
1319 int level, int optname)
1324 static inline int security_socket_shutdown(struct socket *sock, int how)
1328 static inline int security_sock_rcv_skb(struct sock *sk,
1329 struct sk_buff *skb)
1334 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1335 int __user *optlen, unsigned len)
1337 return -ENOPROTOOPT;
1340 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1342 return -ENOPROTOOPT;
1345 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1350 static inline void security_sk_free(struct sock *sk)
1354 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1358 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1362 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1366 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1370 static inline int security_inet_conn_request(struct sock *sk,
1371 struct sk_buff *skb, struct request_sock *req)
1376 static inline void security_inet_csk_clone(struct sock *newsk,
1377 const struct request_sock *req)
1381 static inline void security_inet_conn_established(struct sock *sk,
1382 struct sk_buff *skb)
1386 static inline int security_secmark_relabel_packet(u32 secid)
1391 static inline void security_secmark_refcount_inc(void)
1395 static inline void security_secmark_refcount_dec(void)
1399 static inline int security_tun_dev_alloc_security(void **security)
1404 static inline void security_tun_dev_free_security(void *security)
1408 static inline int security_tun_dev_create(void)
1413 static inline int security_tun_dev_attach_queue(void *security)
1418 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1423 static inline int security_tun_dev_open(void *security)
1428 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1429 struct sk_buff *skb)
1434 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1435 struct sockaddr *address,
1441 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1446 #endif /* CONFIG_SECURITY_NETWORK */
1448 #ifdef CONFIG_SECURITY_INFINIBAND
1449 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1450 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1451 int security_ib_alloc_security(void **sec);
1452 void security_ib_free_security(void *sec);
1453 #else /* CONFIG_SECURITY_INFINIBAND */
1454 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1459 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1464 static inline int security_ib_alloc_security(void **sec)
1469 static inline void security_ib_free_security(void *sec)
1472 #endif /* CONFIG_SECURITY_INFINIBAND */
1474 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1476 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1477 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1478 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1479 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1480 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1481 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1482 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1483 struct xfrm_sec_ctx *polsec, u32 secid);
1484 int security_xfrm_state_delete(struct xfrm_state *x);
1485 void security_xfrm_state_free(struct xfrm_state *x);
1486 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1487 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1488 struct xfrm_policy *xp,
1489 const struct flowi *fl);
1490 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1491 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1493 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1495 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1496 struct xfrm_user_sec_ctx *sec_ctx,
1502 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1507 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1511 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1516 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1517 struct xfrm_user_sec_ctx *sec_ctx)
1522 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1523 struct xfrm_sec_ctx *polsec, u32 secid)
1528 static inline void security_xfrm_state_free(struct xfrm_state *x)
1532 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1537 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1542 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1543 struct xfrm_policy *xp, const struct flowi *fl)
1548 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1553 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1557 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1559 #ifdef CONFIG_SECURITY_PATH
1560 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1561 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1562 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1563 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1565 int security_path_truncate(const struct path *path);
1566 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1567 const char *old_name);
1568 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1569 struct dentry *new_dentry);
1570 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1571 const struct path *new_dir, struct dentry *new_dentry,
1572 unsigned int flags);
1573 int security_path_chmod(const struct path *path, umode_t mode);
1574 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1575 int security_path_chroot(const struct path *path);
1576 #else /* CONFIG_SECURITY_PATH */
1577 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1582 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1588 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1593 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1594 umode_t mode, unsigned int dev)
1599 static inline int security_path_truncate(const struct path *path)
1604 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1605 const char *old_name)
1610 static inline int security_path_link(struct dentry *old_dentry,
1611 const struct path *new_dir,
1612 struct dentry *new_dentry)
1617 static inline int security_path_rename(const struct path *old_dir,
1618 struct dentry *old_dentry,
1619 const struct path *new_dir,
1620 struct dentry *new_dentry,
1626 static inline int security_path_chmod(const struct path *path, umode_t mode)
1631 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1636 static inline int security_path_chroot(const struct path *path)
1640 #endif /* CONFIG_SECURITY_PATH */
1643 #ifdef CONFIG_SECURITY
1645 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1646 void security_key_free(struct key *key);
1647 int security_key_permission(key_ref_t key_ref,
1648 const struct cred *cred, unsigned perm);
1649 int security_key_getsecurity(struct key *key, char **_buffer);
1653 static inline int security_key_alloc(struct key *key,
1654 const struct cred *cred,
1655 unsigned long flags)
1660 static inline void security_key_free(struct key *key)
1664 static inline int security_key_permission(key_ref_t key_ref,
1665 const struct cred *cred,
1671 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1678 #endif /* CONFIG_KEYS */
1681 #ifdef CONFIG_SECURITY
1682 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1683 int security_audit_rule_known(struct audit_krule *krule);
1684 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1685 struct audit_context *actx);
1686 void security_audit_rule_free(void *lsmrule);
1690 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1696 static inline int security_audit_rule_known(struct audit_krule *krule)
1701 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1702 void *lsmrule, struct audit_context *actx)
1707 static inline void security_audit_rule_free(void *lsmrule)
1710 #endif /* CONFIG_SECURITY */
1711 #endif /* CONFIG_AUDIT */
1713 #ifdef CONFIG_SECURITYFS
1715 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1716 struct dentry *parent, void *data,
1717 const struct file_operations *fops);
1718 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1719 struct dentry *securityfs_create_symlink(const char *name,
1720 struct dentry *parent,
1722 const struct inode_operations *iops);
1723 extern void securityfs_remove(struct dentry *dentry);
1725 #else /* CONFIG_SECURITYFS */
1727 static inline struct dentry *securityfs_create_dir(const char *name,
1728 struct dentry *parent)
1730 return ERR_PTR(-ENODEV);
1733 static inline struct dentry *securityfs_create_file(const char *name,
1735 struct dentry *parent,
1737 const struct file_operations *fops)
1739 return ERR_PTR(-ENODEV);
1742 static inline struct dentry *securityfs_create_symlink(const char *name,
1743 struct dentry *parent,
1745 const struct inode_operations *iops)
1747 return ERR_PTR(-ENODEV);
1750 static inline void securityfs_remove(struct dentry *dentry)
1755 #ifdef CONFIG_BPF_SYSCALL
1759 struct bpf_prog_aux;
1760 #ifdef CONFIG_SECURITY
1761 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1762 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1763 extern int security_bpf_prog(struct bpf_prog *prog);
1764 extern int security_bpf_map_alloc(struct bpf_map *map);
1765 extern void security_bpf_map_free(struct bpf_map *map);
1766 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1767 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1769 static inline int security_bpf(int cmd, union bpf_attr *attr,
1775 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1780 static inline int security_bpf_prog(struct bpf_prog *prog)
1785 static inline int security_bpf_map_alloc(struct bpf_map *map)
1790 static inline void security_bpf_map_free(struct bpf_map *map)
1793 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1798 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1800 #endif /* CONFIG_SECURITY */
1801 #endif /* CONFIG_BPF_SYSCALL */
1803 #ifdef CONFIG_SECURITY
1805 static inline char *alloc_secdata(void)
1807 return (char *)get_zeroed_page(GFP_KERNEL);
1810 static inline void free_secdata(void *secdata)
1812 free_page((unsigned long)secdata);
1817 static inline char *alloc_secdata(void)
1822 static inline void free_secdata(void *secdata)
1824 #endif /* CONFIG_SECURITY */
1826 #endif /* ! __LINUX_SECURITY_H */