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)
9 * Copyright (C) 2016 Mellanox Techonologies
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * Due to this file being licensed under the GPL there is controversy over
17 * whether this permits you to write a module that #includes this file
18 * without placing your module under the GPL. Please consult a lawyer for
19 * advice before doing this.
23 #ifndef __LINUX_SECURITY_H
24 #define __LINUX_SECURITY_H
26 #include <linux/key.h>
27 #include <linux/capability.h>
29 #include <linux/slab.h>
30 #include <linux/err.h>
31 #include <linux/string.h>
38 struct kernel_siginfo;
51 struct file_operations;
61 /* Default (no) options for the capable function */
62 #define CAP_OPT_NONE 0x0
63 /* If capable should audit the security request */
64 #define CAP_OPT_NOAUDIT BIT(1)
65 /* If capable is being called by a setid function */
66 #define CAP_OPT_INSETID BIT(2)
68 /* LSM Agnostic defines for fs_context::lsm_flags */
69 #define SECURITY_LSM_NATIVE_LABELS 1
73 struct user_namespace;
80 /* These functions are in security/commoncap.c */
81 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
82 int cap, unsigned int opts);
83 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
84 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
85 extern int cap_ptrace_traceme(struct task_struct *parent);
86 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
87 extern int cap_capset(struct cred *new, const struct cred *old,
88 const kernel_cap_t *effective,
89 const kernel_cap_t *inheritable,
90 const kernel_cap_t *permitted);
91 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
92 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
93 const void *value, size_t size, int flags);
94 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
95 extern int cap_inode_need_killpriv(struct dentry *dentry);
96 extern int cap_inode_killpriv(struct dentry *dentry);
97 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
98 void **buffer, bool alloc);
99 extern int cap_mmap_addr(unsigned long addr);
100 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
101 unsigned long prot, unsigned long flags);
102 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
103 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
104 unsigned long arg4, unsigned long arg5);
105 extern int cap_task_setscheduler(struct task_struct *p);
106 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
107 extern int cap_task_setnice(struct task_struct *p, int nice);
108 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
117 struct xfrm_selector;
120 struct xfrm_user_sec_ctx;
122 struct sctp_endpoint;
125 extern unsigned long mmap_min_addr;
126 extern unsigned long dac_mmap_min_addr;
128 #define mmap_min_addr 0UL
129 #define dac_mmap_min_addr 0UL
133 * Values used in the task_security_ops calls
135 /* setuid or setgid, id0 == uid or gid */
136 #define LSM_SETID_ID 1
138 /* setreuid or setregid, id0 == real, id1 == eff */
139 #define LSM_SETID_RE 2
141 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
142 #define LSM_SETID_RES 4
144 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
145 #define LSM_SETID_FS 8
147 /* Flags for security_task_prlimit(). */
148 #define LSM_PRLIMIT_READ 1
149 #define LSM_PRLIMIT_WRITE 2
151 /* forward declares to avoid warnings */
155 /* bprm->unsafe reasons */
156 #define LSM_UNSAFE_SHARE 1
157 #define LSM_UNSAFE_PTRACE 2
158 #define LSM_UNSAFE_NO_NEW_PRIVS 4
161 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
162 void __user *buffer, size_t *lenp, loff_t *ppos);
165 /* security_inode_init_security callback function to write xattrs */
166 typedef int (*initxattrs) (struct inode *inode,
167 const struct xattr *xattr_array, void *fs_data);
170 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */
171 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM,
172 #define __data_id_stringify(dummy, str) #str,
174 enum kernel_load_data_id {
175 __kernel_read_file_id(__data_id_enumify)
178 static const char * const kernel_load_data_str[] = {
179 __kernel_read_file_id(__data_id_stringify)
182 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
184 if ((unsigned)id >= LOADING_MAX_ID)
185 return kernel_load_data_str[LOADING_UNKNOWN];
187 return kernel_load_data_str[id];
190 #ifdef CONFIG_SECURITY
192 int call_lsm_notifier(enum lsm_event event, void *data);
193 int register_lsm_notifier(struct notifier_block *nb);
194 int unregister_lsm_notifier(struct notifier_block *nb);
197 extern int security_init(void);
199 /* Security operations */
200 int security_binder_set_context_mgr(struct task_struct *mgr);
201 int security_binder_transaction(struct task_struct *from,
202 struct task_struct *to);
203 int security_binder_transfer_binder(struct task_struct *from,
204 struct task_struct *to);
205 int security_binder_transfer_file(struct task_struct *from,
206 struct task_struct *to, struct file *file);
207 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
208 int security_ptrace_traceme(struct task_struct *parent);
209 int security_capget(struct task_struct *target,
210 kernel_cap_t *effective,
211 kernel_cap_t *inheritable,
212 kernel_cap_t *permitted);
213 int security_capset(struct cred *new, const struct cred *old,
214 const kernel_cap_t *effective,
215 const kernel_cap_t *inheritable,
216 const kernel_cap_t *permitted);
217 int security_capable(const struct cred *cred,
218 struct user_namespace *ns,
221 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
222 int security_quota_on(struct dentry *dentry);
223 int security_syslog(int type);
224 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
225 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
226 int security_bprm_set_creds(struct linux_binprm *bprm);
227 int security_bprm_check(struct linux_binprm *bprm);
228 void security_bprm_committing_creds(struct linux_binprm *bprm);
229 void security_bprm_committed_creds(struct linux_binprm *bprm);
230 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc);
231 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param);
232 int security_sb_alloc(struct super_block *sb);
233 void security_sb_free(struct super_block *sb);
234 void security_free_mnt_opts(void **mnt_opts);
235 int security_sb_eat_lsm_opts(char *options, void **mnt_opts);
236 int security_sb_remount(struct super_block *sb, void *mnt_opts);
237 int security_sb_kern_mount(struct super_block *sb);
238 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
239 int security_sb_statfs(struct dentry *dentry);
240 int security_sb_mount(const char *dev_name, const struct path *path,
241 const char *type, unsigned long flags, void *data);
242 int security_sb_umount(struct vfsmount *mnt, int flags);
243 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
244 int security_sb_set_mnt_opts(struct super_block *sb,
246 unsigned long kern_flags,
247 unsigned long *set_kern_flags);
248 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
249 struct super_block *newsb,
250 unsigned long kern_flags,
251 unsigned long *set_kern_flags);
252 int security_add_mnt_opt(const char *option, const char *val,
253 int len, void **mnt_opts);
254 int security_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_kernfs_init_security(struct kernfs_node *kn_dir,
304 struct kernfs_node *kn);
305 int security_file_permission(struct file *file, int mask);
306 int security_file_alloc(struct file *file);
307 void security_file_free(struct file *file);
308 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
309 int security_mmap_file(struct file *file, unsigned long prot,
310 unsigned long flags);
311 int security_mmap_addr(unsigned long addr);
312 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
314 int security_file_lock(struct file *file, unsigned int cmd);
315 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
316 void security_file_set_fowner(struct file *file);
317 int security_file_send_sigiotask(struct task_struct *tsk,
318 struct fown_struct *fown, int sig);
319 int security_file_receive(struct file *file);
320 int security_file_open(struct file *file);
321 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
322 void security_task_free(struct task_struct *task);
323 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
324 void security_cred_free(struct cred *cred);
325 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
326 void security_transfer_creds(struct cred *new, const struct cred *old);
327 void security_cred_getsecid(const struct cred *c, u32 *secid);
328 int security_kernel_act_as(struct cred *new, u32 secid);
329 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
330 int security_kernel_module_request(char *kmod_name);
331 int security_kernel_load_data(enum kernel_load_data_id id);
332 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
333 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
334 enum kernel_read_file_id id);
335 int security_task_fix_setuid(struct cred *new, const struct cred *old,
337 int security_task_setpgid(struct task_struct *p, pid_t pgid);
338 int security_task_getpgid(struct task_struct *p);
339 int security_task_getsid(struct task_struct *p);
340 void security_task_getsecid(struct task_struct *p, u32 *secid);
341 int security_task_setnice(struct task_struct *p, int nice);
342 int security_task_setioprio(struct task_struct *p, int ioprio);
343 int security_task_getioprio(struct task_struct *p);
344 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
346 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
347 struct rlimit *new_rlim);
348 int security_task_setscheduler(struct task_struct *p);
349 int security_task_getscheduler(struct task_struct *p);
350 int security_task_movememory(struct task_struct *p);
351 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
352 int sig, const struct cred *cred);
353 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
354 unsigned long arg4, unsigned long arg5);
355 void security_task_to_inode(struct task_struct *p, struct inode *inode);
356 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
357 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
358 int security_msg_msg_alloc(struct msg_msg *msg);
359 void security_msg_msg_free(struct msg_msg *msg);
360 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
361 void security_msg_queue_free(struct kern_ipc_perm *msq);
362 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
363 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
364 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
365 struct msg_msg *msg, int msqflg);
366 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
367 struct task_struct *target, long type, int mode);
368 int security_shm_alloc(struct kern_ipc_perm *shp);
369 void security_shm_free(struct kern_ipc_perm *shp);
370 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
371 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
372 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
373 int security_sem_alloc(struct kern_ipc_perm *sma);
374 void security_sem_free(struct kern_ipc_perm *sma);
375 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
376 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
377 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
378 unsigned nsops, int alter);
379 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
380 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
382 int security_setprocattr(const char *lsm, const char *name, void *value,
384 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
385 int security_ismaclabel(const char *name);
386 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
387 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
388 void security_release_secctx(char *secdata, u32 seclen);
390 void security_inode_invalidate_secctx(struct inode *inode);
391 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
392 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
393 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
394 #else /* CONFIG_SECURITY */
396 static inline int call_lsm_notifier(enum lsm_event event, void *data)
401 static inline int register_lsm_notifier(struct notifier_block *nb)
406 static inline int unregister_lsm_notifier(struct notifier_block *nb)
411 static inline void security_free_mnt_opts(void **mnt_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,
482 return cap_capable(cred, ns, cap, opts);
485 static inline int security_quotactl(int cmds, int type, int id,
486 struct super_block *sb)
491 static inline int security_quota_on(struct dentry *dentry)
496 static inline int security_syslog(int type)
501 static inline int security_settime64(const struct timespec64 *ts,
502 const struct timezone *tz)
504 return cap_settime(ts, tz);
507 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
509 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
512 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
514 return cap_bprm_set_creds(bprm);
517 static inline int security_bprm_check(struct linux_binprm *bprm)
522 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
526 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
530 static inline int security_fs_context_dup(struct fs_context *fc,
531 struct fs_context *src_fc)
535 static inline int security_fs_context_parse_param(struct fs_context *fc,
536 struct fs_parameter *param)
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_eat_lsm_opts(char *options,
555 static inline int security_sb_remount(struct super_block *sb,
561 static inline int security_sb_kern_mount(struct super_block *sb)
566 static inline int security_sb_show_options(struct seq_file *m,
567 struct super_block *sb)
572 static inline int security_sb_statfs(struct dentry *dentry)
577 static inline int security_sb_mount(const char *dev_name, const struct path *path,
578 const char *type, unsigned long flags,
584 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
589 static inline int security_sb_pivotroot(const struct path *old_path,
590 const struct path *new_path)
595 static inline int security_sb_set_mnt_opts(struct super_block *sb,
597 unsigned long kern_flags,
598 unsigned long *set_kern_flags)
603 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
604 struct super_block *newsb,
605 unsigned long kern_flags,
606 unsigned long *set_kern_flags)
611 static inline int security_add_mnt_opt(const char *option, const char *val,
612 int len, void **mnt_opts)
617 static inline int security_inode_alloc(struct inode *inode)
622 static inline void security_inode_free(struct inode *inode)
625 static inline int security_dentry_init_security(struct dentry *dentry,
627 const struct qstr *name,
634 static inline int security_dentry_create_files_as(struct dentry *dentry,
635 int mode, struct qstr *name,
636 const struct cred *old,
643 static inline int security_inode_init_security(struct inode *inode,
645 const struct qstr *qstr,
646 const initxattrs xattrs,
652 static inline int security_old_inode_init_security(struct inode *inode,
654 const struct qstr *qstr,
656 void **value, size_t *len)
661 static inline int security_inode_create(struct inode *dir,
662 struct dentry *dentry,
668 static inline int security_inode_link(struct dentry *old_dentry,
670 struct dentry *new_dentry)
675 static inline int security_inode_unlink(struct inode *dir,
676 struct dentry *dentry)
681 static inline int security_inode_symlink(struct inode *dir,
682 struct dentry *dentry,
683 const char *old_name)
688 static inline int security_inode_mkdir(struct inode *dir,
689 struct dentry *dentry,
695 static inline int security_inode_rmdir(struct inode *dir,
696 struct dentry *dentry)
701 static inline int security_inode_mknod(struct inode *dir,
702 struct dentry *dentry,
708 static inline int security_inode_rename(struct inode *old_dir,
709 struct dentry *old_dentry,
710 struct inode *new_dir,
711 struct dentry *new_dentry,
717 static inline int security_inode_readlink(struct dentry *dentry)
722 static inline int security_inode_follow_link(struct dentry *dentry,
729 static inline int security_inode_permission(struct inode *inode, int mask)
734 static inline int security_inode_setattr(struct dentry *dentry,
740 static inline int security_inode_getattr(const struct path *path)
745 static inline int security_inode_setxattr(struct dentry *dentry,
746 const char *name, const void *value, size_t size, int flags)
748 return cap_inode_setxattr(dentry, name, value, size, flags);
751 static inline void security_inode_post_setxattr(struct dentry *dentry,
752 const char *name, const void *value, size_t size, int flags)
755 static inline int security_inode_getxattr(struct dentry *dentry,
761 static inline int security_inode_listxattr(struct dentry *dentry)
766 static inline int security_inode_removexattr(struct dentry *dentry,
769 return cap_inode_removexattr(dentry, name);
772 static inline int security_inode_need_killpriv(struct dentry *dentry)
774 return cap_inode_need_killpriv(dentry);
777 static inline int security_inode_killpriv(struct dentry *dentry)
779 return cap_inode_killpriv(dentry);
782 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
787 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
792 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
797 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
802 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
807 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir,
808 struct kernfs_node *kn)
813 static inline int security_inode_copy_up_xattr(const char *name)
818 static inline int security_file_permission(struct file *file, int mask)
823 static inline int security_file_alloc(struct file *file)
828 static inline void security_file_free(struct file *file)
831 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
837 static inline int security_mmap_file(struct file *file, unsigned long prot,
843 static inline int security_mmap_addr(unsigned long addr)
845 return cap_mmap_addr(addr);
848 static inline int security_file_mprotect(struct vm_area_struct *vma,
849 unsigned long reqprot,
855 static inline int security_file_lock(struct file *file, unsigned int cmd)
860 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
866 static inline void security_file_set_fowner(struct file *file)
871 static inline int security_file_send_sigiotask(struct task_struct *tsk,
872 struct fown_struct *fown,
878 static inline int security_file_receive(struct file *file)
883 static inline int security_file_open(struct file *file)
888 static inline int security_task_alloc(struct task_struct *task,
889 unsigned long clone_flags)
894 static inline void security_task_free(struct task_struct *task)
897 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
902 static inline void security_cred_free(struct cred *cred)
905 static inline int security_prepare_creds(struct cred *new,
906 const struct cred *old,
912 static inline void security_transfer_creds(struct cred *new,
913 const struct cred *old)
917 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
922 static inline int security_kernel_create_files_as(struct cred *cred,
928 static inline int security_kernel_module_request(char *kmod_name)
933 static inline int security_kernel_load_data(enum kernel_load_data_id id)
938 static inline int security_kernel_read_file(struct file *file,
939 enum kernel_read_file_id id)
944 static inline int security_kernel_post_read_file(struct file *file,
945 char *buf, loff_t size,
946 enum kernel_read_file_id id)
951 static inline int security_task_fix_setuid(struct cred *new,
952 const struct cred *old,
955 return cap_task_fix_setuid(new, old, flags);
958 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
963 static inline int security_task_getpgid(struct task_struct *p)
968 static inline int security_task_getsid(struct task_struct *p)
973 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
978 static inline int security_task_setnice(struct task_struct *p, int nice)
980 return cap_task_setnice(p, nice);
983 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
985 return cap_task_setioprio(p, ioprio);
988 static inline int security_task_getioprio(struct task_struct *p)
993 static inline int security_task_prlimit(const struct cred *cred,
994 const struct cred *tcred,
1000 static inline int security_task_setrlimit(struct task_struct *p,
1001 unsigned int resource,
1002 struct rlimit *new_rlim)
1007 static inline int security_task_setscheduler(struct task_struct *p)
1009 return cap_task_setscheduler(p);
1012 static inline int security_task_getscheduler(struct task_struct *p)
1017 static inline int security_task_movememory(struct task_struct *p)
1022 static inline int security_task_kill(struct task_struct *p,
1023 struct kernel_siginfo *info, int sig,
1024 const struct cred *cred)
1029 static inline int security_task_prctl(int option, unsigned long arg2,
1034 return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1037 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1040 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1046 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1051 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1056 static inline void security_msg_msg_free(struct msg_msg *msg)
1059 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1064 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1067 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1073 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1078 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1079 struct msg_msg *msg, int msqflg)
1084 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1085 struct msg_msg *msg,
1086 struct task_struct *target,
1087 long type, int mode)
1092 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1097 static inline void security_shm_free(struct kern_ipc_perm *shp)
1100 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1106 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1111 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1112 char __user *shmaddr, int shmflg)
1117 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1122 static inline void security_sem_free(struct kern_ipc_perm *sma)
1125 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1130 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1135 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1136 struct sembuf *sops, unsigned nsops,
1142 static inline void security_d_instantiate(struct dentry *dentry,
1143 struct inode *inode)
1146 static inline int security_getprocattr(struct task_struct *p, const char *lsm,
1147 char *name, char **value)
1152 static inline int security_setprocattr(const char *lsm, char *name,
1153 void *value, size_t size)
1158 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1163 static inline int security_ismaclabel(const char *name)
1168 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1173 static inline int security_secctx_to_secid(const char *secdata,
1180 static inline void security_release_secctx(char *secdata, u32 seclen)
1184 static inline void security_inode_invalidate_secctx(struct inode *inode)
1188 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1192 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1196 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1200 #endif /* CONFIG_SECURITY */
1202 #ifdef CONFIG_SECURITY_NETWORK
1204 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1205 int security_unix_may_send(struct socket *sock, struct socket *other);
1206 int security_socket_create(int family, int type, int protocol, int kern);
1207 int security_socket_post_create(struct socket *sock, int family,
1208 int type, int protocol, int kern);
1209 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1210 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1211 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1212 int security_socket_listen(struct socket *sock, int backlog);
1213 int security_socket_accept(struct socket *sock, struct socket *newsock);
1214 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1215 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1216 int size, int flags);
1217 int security_socket_getsockname(struct socket *sock);
1218 int security_socket_getpeername(struct socket *sock);
1219 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1220 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1221 int security_socket_shutdown(struct socket *sock, int how);
1222 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1223 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1224 int __user *optlen, unsigned len);
1225 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1226 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1227 void security_sk_free(struct sock *sk);
1228 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1229 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1230 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1231 void security_sock_graft(struct sock*sk, struct socket *parent);
1232 int security_inet_conn_request(struct sock *sk,
1233 struct sk_buff *skb, struct request_sock *req);
1234 void security_inet_csk_clone(struct sock *newsk,
1235 const struct request_sock *req);
1236 void security_inet_conn_established(struct sock *sk,
1237 struct sk_buff *skb);
1238 int security_secmark_relabel_packet(u32 secid);
1239 void security_secmark_refcount_inc(void);
1240 void security_secmark_refcount_dec(void);
1241 int security_tun_dev_alloc_security(void **security);
1242 void security_tun_dev_free_security(void *security);
1243 int security_tun_dev_create(void);
1244 int security_tun_dev_attach_queue(void *security);
1245 int security_tun_dev_attach(struct sock *sk, void *security);
1246 int security_tun_dev_open(void *security);
1247 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1248 int security_sctp_bind_connect(struct sock *sk, int optname,
1249 struct sockaddr *address, int addrlen);
1250 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1251 struct sock *newsk);
1253 #else /* CONFIG_SECURITY_NETWORK */
1254 static inline int security_unix_stream_connect(struct sock *sock,
1261 static inline int security_unix_may_send(struct socket *sock,
1262 struct socket *other)
1267 static inline int security_socket_create(int family, int type,
1268 int protocol, int kern)
1273 static inline int security_socket_post_create(struct socket *sock,
1276 int protocol, int kern)
1281 static inline int security_socket_socketpair(struct socket *socka,
1282 struct socket *sockb)
1287 static inline int security_socket_bind(struct socket *sock,
1288 struct sockaddr *address,
1294 static inline int security_socket_connect(struct socket *sock,
1295 struct sockaddr *address,
1301 static inline int security_socket_listen(struct socket *sock, int backlog)
1306 static inline int security_socket_accept(struct socket *sock,
1307 struct socket *newsock)
1312 static inline int security_socket_sendmsg(struct socket *sock,
1313 struct msghdr *msg, int size)
1318 static inline int security_socket_recvmsg(struct socket *sock,
1319 struct msghdr *msg, int size,
1325 static inline int security_socket_getsockname(struct socket *sock)
1330 static inline int security_socket_getpeername(struct socket *sock)
1335 static inline int security_socket_getsockopt(struct socket *sock,
1336 int level, int optname)
1341 static inline int security_socket_setsockopt(struct socket *sock,
1342 int level, int optname)
1347 static inline int security_socket_shutdown(struct socket *sock, int how)
1351 static inline int security_sock_rcv_skb(struct sock *sk,
1352 struct sk_buff *skb)
1357 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1358 int __user *optlen, unsigned len)
1360 return -ENOPROTOOPT;
1363 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1365 return -ENOPROTOOPT;
1368 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1373 static inline void security_sk_free(struct sock *sk)
1377 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1381 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1385 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1389 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1393 static inline int security_inet_conn_request(struct sock *sk,
1394 struct sk_buff *skb, struct request_sock *req)
1399 static inline void security_inet_csk_clone(struct sock *newsk,
1400 const struct request_sock *req)
1404 static inline void security_inet_conn_established(struct sock *sk,
1405 struct sk_buff *skb)
1409 static inline int security_secmark_relabel_packet(u32 secid)
1414 static inline void security_secmark_refcount_inc(void)
1418 static inline void security_secmark_refcount_dec(void)
1422 static inline int security_tun_dev_alloc_security(void **security)
1427 static inline void security_tun_dev_free_security(void *security)
1431 static inline int security_tun_dev_create(void)
1436 static inline int security_tun_dev_attach_queue(void *security)
1441 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1446 static inline int security_tun_dev_open(void *security)
1451 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1452 struct sk_buff *skb)
1457 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1458 struct sockaddr *address,
1464 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1469 #endif /* CONFIG_SECURITY_NETWORK */
1471 #ifdef CONFIG_SECURITY_INFINIBAND
1472 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1473 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1474 int security_ib_alloc_security(void **sec);
1475 void security_ib_free_security(void *sec);
1476 #else /* CONFIG_SECURITY_INFINIBAND */
1477 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1482 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1487 static inline int security_ib_alloc_security(void **sec)
1492 static inline void security_ib_free_security(void *sec)
1495 #endif /* CONFIG_SECURITY_INFINIBAND */
1497 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1499 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1500 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1501 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1502 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1503 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1504 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1505 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1506 struct xfrm_sec_ctx *polsec, u32 secid);
1507 int security_xfrm_state_delete(struct xfrm_state *x);
1508 void security_xfrm_state_free(struct xfrm_state *x);
1509 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1510 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1511 struct xfrm_policy *xp,
1512 const struct flowi *fl);
1513 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1514 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1516 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1518 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1519 struct xfrm_user_sec_ctx *sec_ctx,
1525 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1530 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1534 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1539 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1540 struct xfrm_user_sec_ctx *sec_ctx)
1545 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1546 struct xfrm_sec_ctx *polsec, u32 secid)
1551 static inline void security_xfrm_state_free(struct xfrm_state *x)
1555 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1560 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1565 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1566 struct xfrm_policy *xp, const struct flowi *fl)
1571 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1576 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1580 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1582 #ifdef CONFIG_SECURITY_PATH
1583 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1584 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1585 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1586 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1588 int security_path_truncate(const struct path *path);
1589 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1590 const char *old_name);
1591 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1592 struct dentry *new_dentry);
1593 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1594 const struct path *new_dir, struct dentry *new_dentry,
1595 unsigned int flags);
1596 int security_path_chmod(const struct path *path, umode_t mode);
1597 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1598 int security_path_chroot(const struct path *path);
1599 #else /* CONFIG_SECURITY_PATH */
1600 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1605 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1611 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1616 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1617 umode_t mode, unsigned int dev)
1622 static inline int security_path_truncate(const struct path *path)
1627 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1628 const char *old_name)
1633 static inline int security_path_link(struct dentry *old_dentry,
1634 const struct path *new_dir,
1635 struct dentry *new_dentry)
1640 static inline int security_path_rename(const struct path *old_dir,
1641 struct dentry *old_dentry,
1642 const struct path *new_dir,
1643 struct dentry *new_dentry,
1649 static inline int security_path_chmod(const struct path *path, umode_t mode)
1654 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1659 static inline int security_path_chroot(const struct path *path)
1663 #endif /* CONFIG_SECURITY_PATH */
1666 #ifdef CONFIG_SECURITY
1668 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1669 void security_key_free(struct key *key);
1670 int security_key_permission(key_ref_t key_ref,
1671 const struct cred *cred, unsigned perm);
1672 int security_key_getsecurity(struct key *key, char **_buffer);
1676 static inline int security_key_alloc(struct key *key,
1677 const struct cred *cred,
1678 unsigned long flags)
1683 static inline void security_key_free(struct key *key)
1687 static inline int security_key_permission(key_ref_t key_ref,
1688 const struct cred *cred,
1694 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1701 #endif /* CONFIG_KEYS */
1704 #ifdef CONFIG_SECURITY
1705 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1706 int security_audit_rule_known(struct audit_krule *krule);
1707 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule);
1708 void security_audit_rule_free(void *lsmrule);
1712 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1718 static inline int security_audit_rule_known(struct audit_krule *krule)
1723 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1729 static inline void security_audit_rule_free(void *lsmrule)
1732 #endif /* CONFIG_SECURITY */
1733 #endif /* CONFIG_AUDIT */
1735 #ifdef CONFIG_SECURITYFS
1737 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1738 struct dentry *parent, void *data,
1739 const struct file_operations *fops);
1740 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1741 struct dentry *securityfs_create_symlink(const char *name,
1742 struct dentry *parent,
1744 const struct inode_operations *iops);
1745 extern void securityfs_remove(struct dentry *dentry);
1747 #else /* CONFIG_SECURITYFS */
1749 static inline struct dentry *securityfs_create_dir(const char *name,
1750 struct dentry *parent)
1752 return ERR_PTR(-ENODEV);
1755 static inline struct dentry *securityfs_create_file(const char *name,
1757 struct dentry *parent,
1759 const struct file_operations *fops)
1761 return ERR_PTR(-ENODEV);
1764 static inline struct dentry *securityfs_create_symlink(const char *name,
1765 struct dentry *parent,
1767 const struct inode_operations *iops)
1769 return ERR_PTR(-ENODEV);
1772 static inline void securityfs_remove(struct dentry *dentry)
1777 #ifdef CONFIG_BPF_SYSCALL
1781 struct bpf_prog_aux;
1782 #ifdef CONFIG_SECURITY
1783 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1784 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1785 extern int security_bpf_prog(struct bpf_prog *prog);
1786 extern int security_bpf_map_alloc(struct bpf_map *map);
1787 extern void security_bpf_map_free(struct bpf_map *map);
1788 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1789 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1791 static inline int security_bpf(int cmd, union bpf_attr *attr,
1797 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1802 static inline int security_bpf_prog(struct bpf_prog *prog)
1807 static inline int security_bpf_map_alloc(struct bpf_map *map)
1812 static inline void security_bpf_map_free(struct bpf_map *map)
1815 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1820 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1822 #endif /* CONFIG_SECURITY */
1823 #endif /* CONFIG_BPF_SYSCALL */
1825 #endif /* ! __LINUX_SECURITY_H */