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>
51 struct file_operations;
57 /* Default (no) options for the capable function */
58 #define CAP_OPT_NONE 0x0
59 /* If capable should audit the security request */
60 #define CAP_OPT_NOAUDIT BIT(1)
61 /* If capable is being called by a setid function */
62 #define CAP_OPT_INSETID BIT(2)
64 /* LSM Agnostic defines for sb_set_mnt_opts */
65 #define SECURITY_LSM_NATIVE_LABELS 1
69 struct user_namespace;
76 /* These functions are in security/commoncap.c */
77 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
78 int cap, unsigned int opts);
79 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
80 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
81 extern int cap_ptrace_traceme(struct task_struct *parent);
82 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
83 extern int cap_capset(struct cred *new, const struct cred *old,
84 const kernel_cap_t *effective,
85 const kernel_cap_t *inheritable,
86 const kernel_cap_t *permitted);
87 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
88 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
89 const void *value, size_t size, int flags);
90 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
91 extern int cap_inode_need_killpriv(struct dentry *dentry);
92 extern int cap_inode_killpriv(struct dentry *dentry);
93 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
94 void **buffer, bool alloc);
95 extern int cap_mmap_addr(unsigned long addr);
96 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
97 unsigned long prot, unsigned long flags);
98 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
99 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
100 unsigned long arg4, unsigned long arg5);
101 extern int cap_task_setscheduler(struct task_struct *p);
102 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
103 extern int cap_task_setnice(struct task_struct *p, int nice);
104 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
113 struct xfrm_selector;
116 struct xfrm_user_sec_ctx;
118 struct sctp_endpoint;
121 extern unsigned long mmap_min_addr;
122 extern unsigned long dac_mmap_min_addr;
124 #define mmap_min_addr 0UL
125 #define dac_mmap_min_addr 0UL
129 * Values used in the task_security_ops calls
131 /* setuid or setgid, id0 == uid or gid */
132 #define LSM_SETID_ID 1
134 /* setreuid or setregid, id0 == real, id1 == eff */
135 #define LSM_SETID_RE 2
137 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
138 #define LSM_SETID_RES 4
140 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
141 #define LSM_SETID_FS 8
143 /* Flags for security_task_prlimit(). */
144 #define LSM_PRLIMIT_READ 1
145 #define LSM_PRLIMIT_WRITE 2
147 /* forward declares to avoid warnings */
151 /* bprm->unsafe reasons */
152 #define LSM_UNSAFE_SHARE 1
153 #define LSM_UNSAFE_PTRACE 2
154 #define LSM_UNSAFE_NO_NEW_PRIVS 4
157 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
158 void __user *buffer, size_t *lenp, loff_t *ppos);
161 /* security_inode_init_security callback function to write xattrs */
162 typedef int (*initxattrs) (struct inode *inode,
163 const struct xattr *xattr_array, void *fs_data);
166 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */
167 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM,
168 #define __data_id_stringify(dummy, str) #str,
170 enum kernel_load_data_id {
171 __kernel_read_file_id(__data_id_enumify)
174 static const char * const kernel_load_data_str[] = {
175 __kernel_read_file_id(__data_id_stringify)
178 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
180 if ((unsigned)id >= LOADING_MAX_ID)
181 return kernel_load_data_str[LOADING_UNKNOWN];
183 return kernel_load_data_str[id];
186 #ifdef CONFIG_SECURITY
188 struct security_mnt_opts {
194 int call_lsm_notifier(enum lsm_event event, void *data);
195 int register_lsm_notifier(struct notifier_block *nb);
196 int unregister_lsm_notifier(struct notifier_block *nb);
198 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
200 opts->mnt_opts = NULL;
201 opts->mnt_opts_flags = NULL;
202 opts->num_mnt_opts = 0;
205 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
209 for (i = 0; i < opts->num_mnt_opts; i++)
210 kfree(opts->mnt_opts[i]);
211 kfree(opts->mnt_opts);
212 opts->mnt_opts = NULL;
213 kfree(opts->mnt_opts_flags);
214 opts->mnt_opts_flags = NULL;
215 opts->num_mnt_opts = 0;
219 extern int security_init(void);
221 /* Security operations */
222 int security_binder_set_context_mgr(struct task_struct *mgr);
223 int security_binder_transaction(struct task_struct *from,
224 struct task_struct *to);
225 int security_binder_transfer_binder(struct task_struct *from,
226 struct task_struct *to);
227 int security_binder_transfer_file(struct task_struct *from,
228 struct task_struct *to, struct file *file);
229 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
230 int security_ptrace_traceme(struct task_struct *parent);
231 int security_capget(struct task_struct *target,
232 kernel_cap_t *effective,
233 kernel_cap_t *inheritable,
234 kernel_cap_t *permitted);
235 int security_capset(struct cred *new, const struct cred *old,
236 const kernel_cap_t *effective,
237 const kernel_cap_t *inheritable,
238 const kernel_cap_t *permitted);
239 int security_capable(const struct cred *cred,
240 struct user_namespace *ns,
243 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
244 int security_quota_on(struct dentry *dentry);
245 int security_syslog(int type);
246 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
247 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
248 int security_bprm_set_creds(struct linux_binprm *bprm);
249 int security_bprm_check(struct linux_binprm *bprm);
250 void security_bprm_committing_creds(struct linux_binprm *bprm);
251 void security_bprm_committed_creds(struct linux_binprm *bprm);
252 int security_sb_alloc(struct super_block *sb);
253 void security_sb_free(struct super_block *sb);
254 int security_sb_copy_data(char *orig, char *copy);
255 int security_sb_remount(struct super_block *sb, void *data);
256 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
257 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
258 int security_sb_statfs(struct dentry *dentry);
259 int security_sb_mount(const char *dev_name, const struct path *path,
260 const char *type, unsigned long flags, void *data);
261 int security_sb_umount(struct vfsmount *mnt, int flags);
262 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
263 int security_sb_set_mnt_opts(struct super_block *sb,
264 struct security_mnt_opts *opts,
265 unsigned long kern_flags,
266 unsigned long *set_kern_flags);
267 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
268 struct super_block *newsb,
269 unsigned long kern_flags,
270 unsigned long *set_kern_flags);
271 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
272 int security_dentry_init_security(struct dentry *dentry, int mode,
273 const struct qstr *name, void **ctx,
275 int security_dentry_create_files_as(struct dentry *dentry, int mode,
277 const struct cred *old,
280 int security_inode_alloc(struct inode *inode);
281 void security_inode_free(struct inode *inode);
282 int security_inode_init_security(struct inode *inode, struct inode *dir,
283 const struct qstr *qstr,
284 initxattrs initxattrs, void *fs_data);
285 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
286 const struct qstr *qstr, const char **name,
287 void **value, size_t *len);
288 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
289 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
290 struct dentry *new_dentry);
291 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
292 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
293 const char *old_name);
294 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
295 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
296 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
297 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
298 struct inode *new_dir, struct dentry *new_dentry,
300 int security_inode_readlink(struct dentry *dentry);
301 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
303 int security_inode_permission(struct inode *inode, int mask);
304 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
305 int security_inode_getattr(const struct path *path);
306 int security_inode_setxattr(struct dentry *dentry, const char *name,
307 const void *value, size_t size, int flags);
308 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
309 const void *value, size_t size, int flags);
310 int security_inode_getxattr(struct dentry *dentry, const char *name);
311 int security_inode_listxattr(struct dentry *dentry);
312 int security_inode_removexattr(struct dentry *dentry, const char *name);
313 int security_inode_need_killpriv(struct dentry *dentry);
314 int security_inode_killpriv(struct dentry *dentry);
315 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
316 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
317 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
318 void security_inode_getsecid(struct inode *inode, u32 *secid);
319 int security_inode_copy_up(struct dentry *src, struct cred **new);
320 int security_inode_copy_up_xattr(const char *name);
321 int security_file_permission(struct file *file, int mask);
322 int security_file_alloc(struct file *file);
323 void security_file_free(struct file *file);
324 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
325 int security_mmap_file(struct file *file, unsigned long prot,
326 unsigned long flags);
327 int security_mmap_addr(unsigned long addr);
328 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
330 int security_file_lock(struct file *file, unsigned int cmd);
331 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
332 void security_file_set_fowner(struct file *file);
333 int security_file_send_sigiotask(struct task_struct *tsk,
334 struct fown_struct *fown, int sig);
335 int security_file_receive(struct file *file);
336 int security_file_open(struct file *file);
337 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
338 void security_task_free(struct task_struct *task);
339 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
340 void security_cred_free(struct cred *cred);
341 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
342 void security_transfer_creds(struct cred *new, const struct cred *old);
343 void security_cred_getsecid(const struct cred *c, u32 *secid);
344 int security_kernel_act_as(struct cred *new, u32 secid);
345 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
346 int security_kernel_module_request(char *kmod_name);
347 int security_kernel_load_data(enum kernel_load_data_id id);
348 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
349 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
350 enum kernel_read_file_id id);
351 int security_task_fix_setuid(struct cred *new, const struct cred *old,
353 int security_task_setpgid(struct task_struct *p, pid_t pgid);
354 int security_task_getpgid(struct task_struct *p);
355 int security_task_getsid(struct task_struct *p);
356 void security_task_getsecid(struct task_struct *p, u32 *secid);
357 int security_task_setnice(struct task_struct *p, int nice);
358 int security_task_setioprio(struct task_struct *p, int ioprio);
359 int security_task_getioprio(struct task_struct *p);
360 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
362 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
363 struct rlimit *new_rlim);
364 int security_task_setscheduler(struct task_struct *p);
365 int security_task_getscheduler(struct task_struct *p);
366 int security_task_movememory(struct task_struct *p);
367 int security_task_kill(struct task_struct *p, struct siginfo *info,
368 int sig, const struct cred *cred);
369 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
370 unsigned long arg4, unsigned long arg5);
371 void security_task_to_inode(struct task_struct *p, struct inode *inode);
372 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
373 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
374 int security_msg_msg_alloc(struct msg_msg *msg);
375 void security_msg_msg_free(struct msg_msg *msg);
376 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
377 void security_msg_queue_free(struct kern_ipc_perm *msq);
378 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
379 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
380 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
381 struct msg_msg *msg, int msqflg);
382 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
383 struct task_struct *target, long type, int mode);
384 int security_shm_alloc(struct kern_ipc_perm *shp);
385 void security_shm_free(struct kern_ipc_perm *shp);
386 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
387 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
388 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
389 int security_sem_alloc(struct kern_ipc_perm *sma);
390 void security_sem_free(struct kern_ipc_perm *sma);
391 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
392 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
393 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
394 unsigned nsops, int alter);
395 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
396 int security_getprocattr(struct task_struct *p, char *name, char **value);
397 int security_setprocattr(const char *name, void *value, size_t size);
398 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
399 int security_ismaclabel(const char *name);
400 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
401 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
402 void security_release_secctx(char *secdata, u32 seclen);
404 void security_inode_invalidate_secctx(struct inode *inode);
405 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
406 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
407 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
408 #else /* CONFIG_SECURITY */
409 struct security_mnt_opts {
412 static inline int call_lsm_notifier(enum lsm_event event, void *data)
417 static inline int register_lsm_notifier(struct notifier_block *nb)
422 static inline int unregister_lsm_notifier(struct notifier_block *nb)
427 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
431 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
436 * This is the default capabilities functionality. Most of these functions
437 * are just stubbed out, but a few must call the proper capable code.
440 static inline int security_init(void)
445 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
450 static inline int security_binder_transaction(struct task_struct *from,
451 struct task_struct *to)
456 static inline int security_binder_transfer_binder(struct task_struct *from,
457 struct task_struct *to)
462 static inline int security_binder_transfer_file(struct task_struct *from,
463 struct task_struct *to,
469 static inline int security_ptrace_access_check(struct task_struct *child,
472 return cap_ptrace_access_check(child, mode);
475 static inline int security_ptrace_traceme(struct task_struct *parent)
477 return cap_ptrace_traceme(parent);
480 static inline int security_capget(struct task_struct *target,
481 kernel_cap_t *effective,
482 kernel_cap_t *inheritable,
483 kernel_cap_t *permitted)
485 return cap_capget(target, effective, inheritable, permitted);
488 static inline int security_capset(struct cred *new,
489 const struct cred *old,
490 const kernel_cap_t *effective,
491 const kernel_cap_t *inheritable,
492 const kernel_cap_t *permitted)
494 return cap_capset(new, old, effective, inheritable, permitted);
497 static inline int security_capable(const struct cred *cred,
498 struct user_namespace *ns,
502 return cap_capable(cred, ns, cap, opts);
505 static inline int security_quotactl(int cmds, int type, int id,
506 struct super_block *sb)
511 static inline int security_quota_on(struct dentry *dentry)
516 static inline int security_syslog(int type)
521 static inline int security_settime64(const struct timespec64 *ts,
522 const struct timezone *tz)
524 return cap_settime(ts, tz);
527 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
529 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
532 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
534 return cap_bprm_set_creds(bprm);
537 static inline int security_bprm_check(struct linux_binprm *bprm)
542 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
546 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
550 static inline int security_sb_alloc(struct super_block *sb)
555 static inline void security_sb_free(struct super_block *sb)
558 static inline int security_sb_copy_data(char *orig, char *copy)
563 static inline int security_sb_remount(struct super_block *sb, void *data)
568 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
573 static inline int security_sb_show_options(struct seq_file *m,
574 struct super_block *sb)
579 static inline int security_sb_statfs(struct dentry *dentry)
584 static inline int security_sb_mount(const char *dev_name, const struct path *path,
585 const char *type, unsigned long flags,
591 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
596 static inline int security_sb_pivotroot(const struct path *old_path,
597 const struct path *new_path)
602 static inline int security_sb_set_mnt_opts(struct super_block *sb,
603 struct security_mnt_opts *opts,
604 unsigned long kern_flags,
605 unsigned long *set_kern_flags)
610 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
611 struct super_block *newsb,
612 unsigned long kern_flags,
613 unsigned long *set_kern_flags)
618 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
623 static inline int security_inode_alloc(struct inode *inode)
628 static inline void security_inode_free(struct inode *inode)
631 static inline int security_dentry_init_security(struct dentry *dentry,
633 const struct qstr *name,
640 static inline int security_dentry_create_files_as(struct dentry *dentry,
641 int mode, struct qstr *name,
642 const struct cred *old,
649 static inline int security_inode_init_security(struct inode *inode,
651 const struct qstr *qstr,
652 const initxattrs xattrs,
658 static inline int security_old_inode_init_security(struct inode *inode,
660 const struct qstr *qstr,
662 void **value, size_t *len)
667 static inline int security_inode_create(struct inode *dir,
668 struct dentry *dentry,
674 static inline int security_inode_link(struct dentry *old_dentry,
676 struct dentry *new_dentry)
681 static inline int security_inode_unlink(struct inode *dir,
682 struct dentry *dentry)
687 static inline int security_inode_symlink(struct inode *dir,
688 struct dentry *dentry,
689 const char *old_name)
694 static inline int security_inode_mkdir(struct inode *dir,
695 struct dentry *dentry,
701 static inline int security_inode_rmdir(struct inode *dir,
702 struct dentry *dentry)
707 static inline int security_inode_mknod(struct inode *dir,
708 struct dentry *dentry,
714 static inline int security_inode_rename(struct inode *old_dir,
715 struct dentry *old_dentry,
716 struct inode *new_dir,
717 struct dentry *new_dentry,
723 static inline int security_inode_readlink(struct dentry *dentry)
728 static inline int security_inode_follow_link(struct dentry *dentry,
735 static inline int security_inode_permission(struct inode *inode, int mask)
740 static inline int security_inode_setattr(struct dentry *dentry,
746 static inline int security_inode_getattr(const struct path *path)
751 static inline int security_inode_setxattr(struct dentry *dentry,
752 const char *name, const void *value, size_t size, int flags)
754 return cap_inode_setxattr(dentry, name, value, size, flags);
757 static inline void security_inode_post_setxattr(struct dentry *dentry,
758 const char *name, const void *value, size_t size, int flags)
761 static inline int security_inode_getxattr(struct dentry *dentry,
767 static inline int security_inode_listxattr(struct dentry *dentry)
772 static inline int security_inode_removexattr(struct dentry *dentry,
775 return cap_inode_removexattr(dentry, name);
778 static inline int security_inode_need_killpriv(struct dentry *dentry)
780 return cap_inode_need_killpriv(dentry);
783 static inline int security_inode_killpriv(struct dentry *dentry)
785 return cap_inode_killpriv(dentry);
788 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
790 return cap_inode_getsecurity(inode, name, buffer, alloc);
793 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
798 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
803 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
808 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
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 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, struct inode *inode)
1145 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1150 static inline int security_setprocattr(char *name, void *value, size_t size)
1155 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1160 static inline int security_ismaclabel(const char *name)
1165 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1170 static inline int security_secctx_to_secid(const char *secdata,
1177 static inline void security_release_secctx(char *secdata, u32 seclen)
1181 static inline void security_inode_invalidate_secctx(struct inode *inode)
1185 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1189 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1193 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1197 #endif /* CONFIG_SECURITY */
1199 #ifdef CONFIG_SECURITY_NETWORK
1201 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1202 int security_unix_may_send(struct socket *sock, struct socket *other);
1203 int security_socket_create(int family, int type, int protocol, int kern);
1204 int security_socket_post_create(struct socket *sock, int family,
1205 int type, int protocol, int kern);
1206 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1207 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1208 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1209 int security_socket_listen(struct socket *sock, int backlog);
1210 int security_socket_accept(struct socket *sock, struct socket *newsock);
1211 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1212 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1213 int size, int flags);
1214 int security_socket_getsockname(struct socket *sock);
1215 int security_socket_getpeername(struct socket *sock);
1216 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1217 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1218 int security_socket_shutdown(struct socket *sock, int how);
1219 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1220 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1221 int __user *optlen, unsigned len);
1222 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1223 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1224 void security_sk_free(struct sock *sk);
1225 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1226 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1227 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1228 void security_sock_graft(struct sock*sk, struct socket *parent);
1229 int security_inet_conn_request(struct sock *sk,
1230 struct sk_buff *skb, struct request_sock *req);
1231 void security_inet_csk_clone(struct sock *newsk,
1232 const struct request_sock *req);
1233 void security_inet_conn_established(struct sock *sk,
1234 struct sk_buff *skb);
1235 int security_secmark_relabel_packet(u32 secid);
1236 void security_secmark_refcount_inc(void);
1237 void security_secmark_refcount_dec(void);
1238 int security_tun_dev_alloc_security(void **security);
1239 void security_tun_dev_free_security(void *security);
1240 int security_tun_dev_create(void);
1241 int security_tun_dev_attach_queue(void *security);
1242 int security_tun_dev_attach(struct sock *sk, void *security);
1243 int security_tun_dev_open(void *security);
1244 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1245 int security_sctp_bind_connect(struct sock *sk, int optname,
1246 struct sockaddr *address, int addrlen);
1247 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1248 struct sock *newsk);
1250 #else /* CONFIG_SECURITY_NETWORK */
1251 static inline int security_unix_stream_connect(struct sock *sock,
1258 static inline int security_unix_may_send(struct socket *sock,
1259 struct socket *other)
1264 static inline int security_socket_create(int family, int type,
1265 int protocol, int kern)
1270 static inline int security_socket_post_create(struct socket *sock,
1273 int protocol, int kern)
1278 static inline int security_socket_socketpair(struct socket *socka,
1279 struct socket *sockb)
1284 static inline int security_socket_bind(struct socket *sock,
1285 struct sockaddr *address,
1291 static inline int security_socket_connect(struct socket *sock,
1292 struct sockaddr *address,
1298 static inline int security_socket_listen(struct socket *sock, int backlog)
1303 static inline int security_socket_accept(struct socket *sock,
1304 struct socket *newsock)
1309 static inline int security_socket_sendmsg(struct socket *sock,
1310 struct msghdr *msg, int size)
1315 static inline int security_socket_recvmsg(struct socket *sock,
1316 struct msghdr *msg, int size,
1322 static inline int security_socket_getsockname(struct socket *sock)
1327 static inline int security_socket_getpeername(struct socket *sock)
1332 static inline int security_socket_getsockopt(struct socket *sock,
1333 int level, int optname)
1338 static inline int security_socket_setsockopt(struct socket *sock,
1339 int level, int optname)
1344 static inline int security_socket_shutdown(struct socket *sock, int how)
1348 static inline int security_sock_rcv_skb(struct sock *sk,
1349 struct sk_buff *skb)
1354 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1355 int __user *optlen, unsigned len)
1357 return -ENOPROTOOPT;
1360 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1362 return -ENOPROTOOPT;
1365 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1370 static inline void security_sk_free(struct sock *sk)
1374 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1378 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1382 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1386 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1390 static inline int security_inet_conn_request(struct sock *sk,
1391 struct sk_buff *skb, struct request_sock *req)
1396 static inline void security_inet_csk_clone(struct sock *newsk,
1397 const struct request_sock *req)
1401 static inline void security_inet_conn_established(struct sock *sk,
1402 struct sk_buff *skb)
1406 static inline int security_secmark_relabel_packet(u32 secid)
1411 static inline void security_secmark_refcount_inc(void)
1415 static inline void security_secmark_refcount_dec(void)
1419 static inline int security_tun_dev_alloc_security(void **security)
1424 static inline void security_tun_dev_free_security(void *security)
1428 static inline int security_tun_dev_create(void)
1433 static inline int security_tun_dev_attach_queue(void *security)
1438 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1443 static inline int security_tun_dev_open(void *security)
1448 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1449 struct sk_buff *skb)
1454 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1455 struct sockaddr *address,
1461 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1466 #endif /* CONFIG_SECURITY_NETWORK */
1468 #ifdef CONFIG_SECURITY_INFINIBAND
1469 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1470 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1471 int security_ib_alloc_security(void **sec);
1472 void security_ib_free_security(void *sec);
1473 #else /* CONFIG_SECURITY_INFINIBAND */
1474 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1479 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1484 static inline int security_ib_alloc_security(void **sec)
1489 static inline void security_ib_free_security(void *sec)
1492 #endif /* CONFIG_SECURITY_INFINIBAND */
1494 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1496 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1497 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1498 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1499 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1500 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1501 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1502 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1503 struct xfrm_sec_ctx *polsec, u32 secid);
1504 int security_xfrm_state_delete(struct xfrm_state *x);
1505 void security_xfrm_state_free(struct xfrm_state *x);
1506 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1507 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1508 struct xfrm_policy *xp,
1509 const struct flowi *fl);
1510 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1511 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1513 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1515 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1516 struct xfrm_user_sec_ctx *sec_ctx,
1522 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1527 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1531 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1536 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1537 struct xfrm_user_sec_ctx *sec_ctx)
1542 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1543 struct xfrm_sec_ctx *polsec, u32 secid)
1548 static inline void security_xfrm_state_free(struct xfrm_state *x)
1552 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1557 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1562 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1563 struct xfrm_policy *xp, const struct flowi *fl)
1568 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1573 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1577 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1579 #ifdef CONFIG_SECURITY_PATH
1580 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1581 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1582 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1583 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1585 int security_path_truncate(const struct path *path);
1586 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1587 const char *old_name);
1588 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1589 struct dentry *new_dentry);
1590 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1591 const struct path *new_dir, struct dentry *new_dentry,
1592 unsigned int flags);
1593 int security_path_chmod(const struct path *path, umode_t mode);
1594 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1595 int security_path_chroot(const struct path *path);
1596 #else /* CONFIG_SECURITY_PATH */
1597 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1602 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1608 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1613 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1614 umode_t mode, unsigned int dev)
1619 static inline int security_path_truncate(const struct path *path)
1624 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1625 const char *old_name)
1630 static inline int security_path_link(struct dentry *old_dentry,
1631 const struct path *new_dir,
1632 struct dentry *new_dentry)
1637 static inline int security_path_rename(const struct path *old_dir,
1638 struct dentry *old_dentry,
1639 const struct path *new_dir,
1640 struct dentry *new_dentry,
1646 static inline int security_path_chmod(const struct path *path, umode_t mode)
1651 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1656 static inline int security_path_chroot(const struct path *path)
1660 #endif /* CONFIG_SECURITY_PATH */
1663 #ifdef CONFIG_SECURITY
1665 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1666 void security_key_free(struct key *key);
1667 int security_key_permission(key_ref_t key_ref,
1668 const struct cred *cred, unsigned perm);
1669 int security_key_getsecurity(struct key *key, char **_buffer);
1673 static inline int security_key_alloc(struct key *key,
1674 const struct cred *cred,
1675 unsigned long flags)
1680 static inline void security_key_free(struct key *key)
1684 static inline int security_key_permission(key_ref_t key_ref,
1685 const struct cred *cred,
1691 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1698 #endif /* CONFIG_KEYS */
1701 #ifdef CONFIG_SECURITY
1702 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1703 int security_audit_rule_known(struct audit_krule *krule);
1704 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1705 struct audit_context *actx);
1706 void security_audit_rule_free(void *lsmrule);
1710 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1716 static inline int security_audit_rule_known(struct audit_krule *krule)
1721 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1722 void *lsmrule, struct audit_context *actx)
1727 static inline void security_audit_rule_free(void *lsmrule)
1730 #endif /* CONFIG_SECURITY */
1731 #endif /* CONFIG_AUDIT */
1733 #ifdef CONFIG_SECURITYFS
1735 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1736 struct dentry *parent, void *data,
1737 const struct file_operations *fops);
1738 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1739 struct dentry *securityfs_create_symlink(const char *name,
1740 struct dentry *parent,
1742 const struct inode_operations *iops);
1743 extern void securityfs_remove(struct dentry *dentry);
1745 #else /* CONFIG_SECURITYFS */
1747 static inline struct dentry *securityfs_create_dir(const char *name,
1748 struct dentry *parent)
1750 return ERR_PTR(-ENODEV);
1753 static inline struct dentry *securityfs_create_file(const char *name,
1755 struct dentry *parent,
1757 const struct file_operations *fops)
1759 return ERR_PTR(-ENODEV);
1762 static inline struct dentry *securityfs_create_symlink(const char *name,
1763 struct dentry *parent,
1765 const struct inode_operations *iops)
1767 return ERR_PTR(-ENODEV);
1770 static inline void securityfs_remove(struct dentry *dentry)
1775 #ifdef CONFIG_BPF_SYSCALL
1779 struct bpf_prog_aux;
1780 #ifdef CONFIG_SECURITY
1781 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1782 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1783 extern int security_bpf_prog(struct bpf_prog *prog);
1784 extern int security_bpf_map_alloc(struct bpf_map *map);
1785 extern void security_bpf_map_free(struct bpf_map *map);
1786 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1787 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1789 static inline int security_bpf(int cmd, union bpf_attr *attr,
1795 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1800 static inline int security_bpf_prog(struct bpf_prog *prog)
1805 static inline int security_bpf_map_alloc(struct bpf_map *map)
1810 static inline void security_bpf_map_free(struct bpf_map *map)
1813 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1818 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1820 #endif /* CONFIG_SECURITY */
1821 #endif /* CONFIG_BPF_SYSCALL */
1823 #ifdef CONFIG_SECURITY
1825 static inline char *alloc_secdata(void)
1827 return (char *)get_zeroed_page(GFP_KERNEL);
1830 static inline void free_secdata(void *secdata)
1832 free_page((unsigned long)secdata);
1837 static inline char *alloc_secdata(void)
1842 static inline void free_secdata(void *secdata)
1844 #endif /* CONFIG_SECURITY */
1846 #endif /* ! __LINUX_SECURITY_H */