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;
81 * These are reasons that can be passed to the security_locked_down()
82 * LSM hook. Lockdown reasons that protect kernel integrity (ie, the
83 * ability for userland to modify kernel code) are placed before
84 * LOCKDOWN_INTEGRITY_MAX. Lockdown reasons that protect kernel
85 * confidentiality (ie, the ability for userland to extract
86 * information from the running kernel that would otherwise be
87 * restricted) are placed before LOCKDOWN_CONFIDENTIALITY_MAX.
89 * LSM authors should note that the semantics of any given lockdown
90 * reason are not guaranteed to be stable - the same reason may block
91 * one set of features in one kernel release, and a slightly different
92 * set of features in a later kernel release. LSMs that seek to expose
93 * lockdown policy at any level of granularity other than "none",
94 * "integrity" or "confidentiality" are responsible for either
95 * ensuring that they expose a consistent level of functionality to
96 * userland, or ensuring that userland is aware that this is
97 * potentially a moving target. It is easy to misuse this information
98 * in a way that could break userspace. Please be careful not to do
101 * If you add to this, remember to extend lockdown_reasons in
102 * security/lockdown/lockdown.c.
104 enum lockdown_reason {
106 LOCKDOWN_MODULE_SIGNATURE,
109 LOCKDOWN_HIBERNATION,
113 LOCKDOWN_ACPI_TABLES,
115 LOCKDOWN_TIOCSSERIAL,
116 LOCKDOWN_MODULE_PARAMETERS,
117 LOCKDOWN_INTEGRITY_MAX,
118 LOCKDOWN_CONFIDENTIALITY_MAX,
121 /* These functions are in security/commoncap.c */
122 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
123 int cap, unsigned int opts);
124 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
125 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
126 extern int cap_ptrace_traceme(struct task_struct *parent);
127 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
128 extern int cap_capset(struct cred *new, const struct cred *old,
129 const kernel_cap_t *effective,
130 const kernel_cap_t *inheritable,
131 const kernel_cap_t *permitted);
132 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
133 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
134 const void *value, size_t size, int flags);
135 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
136 extern int cap_inode_need_killpriv(struct dentry *dentry);
137 extern int cap_inode_killpriv(struct dentry *dentry);
138 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
139 void **buffer, bool alloc);
140 extern int cap_mmap_addr(unsigned long addr);
141 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
142 unsigned long prot, unsigned long flags);
143 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
144 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
145 unsigned long arg4, unsigned long arg5);
146 extern int cap_task_setscheduler(struct task_struct *p);
147 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
148 extern int cap_task_setnice(struct task_struct *p, int nice);
149 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
158 struct xfrm_selector;
161 struct xfrm_user_sec_ctx;
163 struct sctp_endpoint;
166 extern unsigned long mmap_min_addr;
167 extern unsigned long dac_mmap_min_addr;
169 #define mmap_min_addr 0UL
170 #define dac_mmap_min_addr 0UL
174 * Values used in the task_security_ops calls
176 /* setuid or setgid, id0 == uid or gid */
177 #define LSM_SETID_ID 1
179 /* setreuid or setregid, id0 == real, id1 == eff */
180 #define LSM_SETID_RE 2
182 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
183 #define LSM_SETID_RES 4
185 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
186 #define LSM_SETID_FS 8
188 /* Flags for security_task_prlimit(). */
189 #define LSM_PRLIMIT_READ 1
190 #define LSM_PRLIMIT_WRITE 2
192 /* forward declares to avoid warnings */
196 /* bprm->unsafe reasons */
197 #define LSM_UNSAFE_SHARE 1
198 #define LSM_UNSAFE_PTRACE 2
199 #define LSM_UNSAFE_NO_NEW_PRIVS 4
202 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
203 void __user *buffer, size_t *lenp, loff_t *ppos);
206 /* security_inode_init_security callback function to write xattrs */
207 typedef int (*initxattrs) (struct inode *inode,
208 const struct xattr *xattr_array, void *fs_data);
211 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */
212 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM,
213 #define __data_id_stringify(dummy, str) #str,
215 enum kernel_load_data_id {
216 __kernel_read_file_id(__data_id_enumify)
219 static const char * const kernel_load_data_str[] = {
220 __kernel_read_file_id(__data_id_stringify)
223 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
225 if ((unsigned)id >= LOADING_MAX_ID)
226 return kernel_load_data_str[LOADING_UNKNOWN];
228 return kernel_load_data_str[id];
231 #ifdef CONFIG_SECURITY
233 int call_lsm_notifier(enum lsm_event event, void *data);
234 int register_lsm_notifier(struct notifier_block *nb);
235 int unregister_lsm_notifier(struct notifier_block *nb);
238 extern int security_init(void);
239 extern int early_security_init(void);
241 /* Security operations */
242 int security_binder_set_context_mgr(struct task_struct *mgr);
243 int security_binder_transaction(struct task_struct *from,
244 struct task_struct *to);
245 int security_binder_transfer_binder(struct task_struct *from,
246 struct task_struct *to);
247 int security_binder_transfer_file(struct task_struct *from,
248 struct task_struct *to, struct file *file);
249 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
250 int security_ptrace_traceme(struct task_struct *parent);
251 int security_capget(struct task_struct *target,
252 kernel_cap_t *effective,
253 kernel_cap_t *inheritable,
254 kernel_cap_t *permitted);
255 int security_capset(struct cred *new, const struct cred *old,
256 const kernel_cap_t *effective,
257 const kernel_cap_t *inheritable,
258 const kernel_cap_t *permitted);
259 int security_capable(const struct cred *cred,
260 struct user_namespace *ns,
263 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
264 int security_quota_on(struct dentry *dentry);
265 int security_syslog(int type);
266 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
267 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
268 int security_bprm_set_creds(struct linux_binprm *bprm);
269 int security_bprm_check(struct linux_binprm *bprm);
270 void security_bprm_committing_creds(struct linux_binprm *bprm);
271 void security_bprm_committed_creds(struct linux_binprm *bprm);
272 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc);
273 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param);
274 int security_sb_alloc(struct super_block *sb);
275 void security_sb_free(struct super_block *sb);
276 void security_free_mnt_opts(void **mnt_opts);
277 int security_sb_eat_lsm_opts(char *options, void **mnt_opts);
278 int security_sb_remount(struct super_block *sb, void *mnt_opts);
279 int security_sb_kern_mount(struct super_block *sb);
280 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
281 int security_sb_statfs(struct dentry *dentry);
282 int security_sb_mount(const char *dev_name, const struct path *path,
283 const char *type, unsigned long flags, void *data);
284 int security_sb_umount(struct vfsmount *mnt, int flags);
285 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
286 int security_sb_set_mnt_opts(struct super_block *sb,
288 unsigned long kern_flags,
289 unsigned long *set_kern_flags);
290 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
291 struct super_block *newsb,
292 unsigned long kern_flags,
293 unsigned long *set_kern_flags);
294 int security_add_mnt_opt(const char *option, const char *val,
295 int len, void **mnt_opts);
296 int security_move_mount(const struct path *from_path, const struct path *to_path);
297 int security_dentry_init_security(struct dentry *dentry, int mode,
298 const struct qstr *name, void **ctx,
300 int security_dentry_create_files_as(struct dentry *dentry, int mode,
302 const struct cred *old,
305 int security_inode_alloc(struct inode *inode);
306 void security_inode_free(struct inode *inode);
307 int security_inode_init_security(struct inode *inode, struct inode *dir,
308 const struct qstr *qstr,
309 initxattrs initxattrs, void *fs_data);
310 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
311 const struct qstr *qstr, const char **name,
312 void **value, size_t *len);
313 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
314 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
315 struct dentry *new_dentry);
316 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
317 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
318 const char *old_name);
319 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
320 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
321 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
322 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
323 struct inode *new_dir, struct dentry *new_dentry,
325 int security_inode_readlink(struct dentry *dentry);
326 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
328 int security_inode_permission(struct inode *inode, int mask);
329 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
330 int security_inode_getattr(const struct path *path);
331 int security_inode_setxattr(struct dentry *dentry, const char *name,
332 const void *value, size_t size, int flags);
333 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
334 const void *value, size_t size, int flags);
335 int security_inode_getxattr(struct dentry *dentry, const char *name);
336 int security_inode_listxattr(struct dentry *dentry);
337 int security_inode_removexattr(struct dentry *dentry, const char *name);
338 int security_inode_need_killpriv(struct dentry *dentry);
339 int security_inode_killpriv(struct dentry *dentry);
340 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
341 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
342 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
343 void security_inode_getsecid(struct inode *inode, u32 *secid);
344 int security_inode_copy_up(struct dentry *src, struct cred **new);
345 int security_inode_copy_up_xattr(const char *name);
346 int security_kernfs_init_security(struct kernfs_node *kn_dir,
347 struct kernfs_node *kn);
348 int security_file_permission(struct file *file, int mask);
349 int security_file_alloc(struct file *file);
350 void security_file_free(struct file *file);
351 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
352 int security_mmap_file(struct file *file, unsigned long prot,
353 unsigned long flags);
354 int security_mmap_addr(unsigned long addr);
355 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
357 int security_file_lock(struct file *file, unsigned int cmd);
358 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
359 void security_file_set_fowner(struct file *file);
360 int security_file_send_sigiotask(struct task_struct *tsk,
361 struct fown_struct *fown, int sig);
362 int security_file_receive(struct file *file);
363 int security_file_open(struct file *file);
364 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
365 void security_task_free(struct task_struct *task);
366 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
367 void security_cred_free(struct cred *cred);
368 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
369 void security_transfer_creds(struct cred *new, const struct cred *old);
370 void security_cred_getsecid(const struct cred *c, u32 *secid);
371 int security_kernel_act_as(struct cred *new, u32 secid);
372 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
373 int security_kernel_module_request(char *kmod_name);
374 int security_kernel_load_data(enum kernel_load_data_id id);
375 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
376 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
377 enum kernel_read_file_id id);
378 int security_task_fix_setuid(struct cred *new, const struct cred *old,
380 int security_task_setpgid(struct task_struct *p, pid_t pgid);
381 int security_task_getpgid(struct task_struct *p);
382 int security_task_getsid(struct task_struct *p);
383 void security_task_getsecid(struct task_struct *p, u32 *secid);
384 int security_task_setnice(struct task_struct *p, int nice);
385 int security_task_setioprio(struct task_struct *p, int ioprio);
386 int security_task_getioprio(struct task_struct *p);
387 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
389 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
390 struct rlimit *new_rlim);
391 int security_task_setscheduler(struct task_struct *p);
392 int security_task_getscheduler(struct task_struct *p);
393 int security_task_movememory(struct task_struct *p);
394 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
395 int sig, const struct cred *cred);
396 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
397 unsigned long arg4, unsigned long arg5);
398 void security_task_to_inode(struct task_struct *p, struct inode *inode);
399 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
400 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
401 int security_msg_msg_alloc(struct msg_msg *msg);
402 void security_msg_msg_free(struct msg_msg *msg);
403 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
404 void security_msg_queue_free(struct kern_ipc_perm *msq);
405 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
406 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
407 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
408 struct msg_msg *msg, int msqflg);
409 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
410 struct task_struct *target, long type, int mode);
411 int security_shm_alloc(struct kern_ipc_perm *shp);
412 void security_shm_free(struct kern_ipc_perm *shp);
413 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
414 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
415 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
416 int security_sem_alloc(struct kern_ipc_perm *sma);
417 void security_sem_free(struct kern_ipc_perm *sma);
418 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
419 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
420 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
421 unsigned nsops, int alter);
422 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
423 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
425 int security_setprocattr(const char *lsm, const char *name, void *value,
427 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
428 int security_ismaclabel(const char *name);
429 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
430 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
431 void security_release_secctx(char *secdata, u32 seclen);
433 void security_inode_invalidate_secctx(struct inode *inode);
434 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
435 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
436 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
437 int security_locked_down(enum lockdown_reason what);
438 #else /* CONFIG_SECURITY */
440 static inline int call_lsm_notifier(enum lsm_event event, void *data)
445 static inline int register_lsm_notifier(struct notifier_block *nb)
450 static inline int unregister_lsm_notifier(struct notifier_block *nb)
455 static inline void security_free_mnt_opts(void **mnt_opts)
460 * This is the default capabilities functionality. Most of these functions
461 * are just stubbed out, but a few must call the proper capable code.
464 static inline int security_init(void)
469 static inline int early_security_init(void)
474 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
479 static inline int security_binder_transaction(struct task_struct *from,
480 struct task_struct *to)
485 static inline int security_binder_transfer_binder(struct task_struct *from,
486 struct task_struct *to)
491 static inline int security_binder_transfer_file(struct task_struct *from,
492 struct task_struct *to,
498 static inline int security_ptrace_access_check(struct task_struct *child,
501 return cap_ptrace_access_check(child, mode);
504 static inline int security_ptrace_traceme(struct task_struct *parent)
506 return cap_ptrace_traceme(parent);
509 static inline int security_capget(struct task_struct *target,
510 kernel_cap_t *effective,
511 kernel_cap_t *inheritable,
512 kernel_cap_t *permitted)
514 return cap_capget(target, effective, inheritable, permitted);
517 static inline int security_capset(struct cred *new,
518 const struct cred *old,
519 const kernel_cap_t *effective,
520 const kernel_cap_t *inheritable,
521 const kernel_cap_t *permitted)
523 return cap_capset(new, old, effective, inheritable, permitted);
526 static inline int security_capable(const struct cred *cred,
527 struct user_namespace *ns,
531 return cap_capable(cred, ns, cap, opts);
534 static inline int security_quotactl(int cmds, int type, int id,
535 struct super_block *sb)
540 static inline int security_quota_on(struct dentry *dentry)
545 static inline int security_syslog(int type)
550 static inline int security_settime64(const struct timespec64 *ts,
551 const struct timezone *tz)
553 return cap_settime(ts, tz);
556 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
558 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
561 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
563 return cap_bprm_set_creds(bprm);
566 static inline int security_bprm_check(struct linux_binprm *bprm)
571 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
575 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
579 static inline int security_fs_context_dup(struct fs_context *fc,
580 struct fs_context *src_fc)
584 static inline int security_fs_context_parse_param(struct fs_context *fc,
585 struct fs_parameter *param)
590 static inline int security_sb_alloc(struct super_block *sb)
595 static inline void security_sb_free(struct super_block *sb)
598 static inline int security_sb_eat_lsm_opts(char *options,
604 static inline int security_sb_remount(struct super_block *sb,
610 static inline int security_sb_kern_mount(struct super_block *sb)
615 static inline int security_sb_show_options(struct seq_file *m,
616 struct super_block *sb)
621 static inline int security_sb_statfs(struct dentry *dentry)
626 static inline int security_sb_mount(const char *dev_name, const struct path *path,
627 const char *type, unsigned long flags,
633 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
638 static inline int security_sb_pivotroot(const struct path *old_path,
639 const struct path *new_path)
644 static inline int security_sb_set_mnt_opts(struct super_block *sb,
646 unsigned long kern_flags,
647 unsigned long *set_kern_flags)
652 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
653 struct super_block *newsb,
654 unsigned long kern_flags,
655 unsigned long *set_kern_flags)
660 static inline int security_add_mnt_opt(const char *option, const char *val,
661 int len, void **mnt_opts)
666 static inline int security_move_mount(const struct path *from_path,
667 const struct path *to_path)
672 static inline int security_inode_alloc(struct inode *inode)
677 static inline void security_inode_free(struct inode *inode)
680 static inline int security_dentry_init_security(struct dentry *dentry,
682 const struct qstr *name,
689 static inline int security_dentry_create_files_as(struct dentry *dentry,
690 int mode, struct qstr *name,
691 const struct cred *old,
698 static inline int security_inode_init_security(struct inode *inode,
700 const struct qstr *qstr,
701 const initxattrs xattrs,
707 static inline int security_old_inode_init_security(struct inode *inode,
709 const struct qstr *qstr,
711 void **value, size_t *len)
716 static inline int security_inode_create(struct inode *dir,
717 struct dentry *dentry,
723 static inline int security_inode_link(struct dentry *old_dentry,
725 struct dentry *new_dentry)
730 static inline int security_inode_unlink(struct inode *dir,
731 struct dentry *dentry)
736 static inline int security_inode_symlink(struct inode *dir,
737 struct dentry *dentry,
738 const char *old_name)
743 static inline int security_inode_mkdir(struct inode *dir,
744 struct dentry *dentry,
750 static inline int security_inode_rmdir(struct inode *dir,
751 struct dentry *dentry)
756 static inline int security_inode_mknod(struct inode *dir,
757 struct dentry *dentry,
763 static inline int security_inode_rename(struct inode *old_dir,
764 struct dentry *old_dentry,
765 struct inode *new_dir,
766 struct dentry *new_dentry,
772 static inline int security_inode_readlink(struct dentry *dentry)
777 static inline int security_inode_follow_link(struct dentry *dentry,
784 static inline int security_inode_permission(struct inode *inode, int mask)
789 static inline int security_inode_setattr(struct dentry *dentry,
795 static inline int security_inode_getattr(const struct path *path)
800 static inline int security_inode_setxattr(struct dentry *dentry,
801 const char *name, const void *value, size_t size, int flags)
803 return cap_inode_setxattr(dentry, name, value, size, flags);
806 static inline void security_inode_post_setxattr(struct dentry *dentry,
807 const char *name, const void *value, size_t size, int flags)
810 static inline int security_inode_getxattr(struct dentry *dentry,
816 static inline int security_inode_listxattr(struct dentry *dentry)
821 static inline int security_inode_removexattr(struct dentry *dentry,
824 return cap_inode_removexattr(dentry, name);
827 static inline int security_inode_need_killpriv(struct dentry *dentry)
829 return cap_inode_need_killpriv(dentry);
832 static inline int security_inode_killpriv(struct dentry *dentry)
834 return cap_inode_killpriv(dentry);
837 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
842 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
847 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
852 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
857 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
862 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir,
863 struct kernfs_node *kn)
868 static inline int security_inode_copy_up_xattr(const char *name)
873 static inline int security_file_permission(struct file *file, int mask)
878 static inline int security_file_alloc(struct file *file)
883 static inline void security_file_free(struct file *file)
886 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
892 static inline int security_mmap_file(struct file *file, unsigned long prot,
898 static inline int security_mmap_addr(unsigned long addr)
900 return cap_mmap_addr(addr);
903 static inline int security_file_mprotect(struct vm_area_struct *vma,
904 unsigned long reqprot,
910 static inline int security_file_lock(struct file *file, unsigned int cmd)
915 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
921 static inline void security_file_set_fowner(struct file *file)
926 static inline int security_file_send_sigiotask(struct task_struct *tsk,
927 struct fown_struct *fown,
933 static inline int security_file_receive(struct file *file)
938 static inline int security_file_open(struct file *file)
943 static inline int security_task_alloc(struct task_struct *task,
944 unsigned long clone_flags)
949 static inline void security_task_free(struct task_struct *task)
952 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
957 static inline void security_cred_free(struct cred *cred)
960 static inline int security_prepare_creds(struct cred *new,
961 const struct cred *old,
967 static inline void security_transfer_creds(struct cred *new,
968 const struct cred *old)
972 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
977 static inline int security_kernel_create_files_as(struct cred *cred,
983 static inline int security_kernel_module_request(char *kmod_name)
988 static inline int security_kernel_load_data(enum kernel_load_data_id id)
993 static inline int security_kernel_read_file(struct file *file,
994 enum kernel_read_file_id id)
999 static inline int security_kernel_post_read_file(struct file *file,
1000 char *buf, loff_t size,
1001 enum kernel_read_file_id id)
1006 static inline int security_task_fix_setuid(struct cred *new,
1007 const struct cred *old,
1010 return cap_task_fix_setuid(new, old, flags);
1013 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
1018 static inline int security_task_getpgid(struct task_struct *p)
1023 static inline int security_task_getsid(struct task_struct *p)
1028 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
1033 static inline int security_task_setnice(struct task_struct *p, int nice)
1035 return cap_task_setnice(p, nice);
1038 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
1040 return cap_task_setioprio(p, ioprio);
1043 static inline int security_task_getioprio(struct task_struct *p)
1048 static inline int security_task_prlimit(const struct cred *cred,
1049 const struct cred *tcred,
1055 static inline int security_task_setrlimit(struct task_struct *p,
1056 unsigned int resource,
1057 struct rlimit *new_rlim)
1062 static inline int security_task_setscheduler(struct task_struct *p)
1064 return cap_task_setscheduler(p);
1067 static inline int security_task_getscheduler(struct task_struct *p)
1072 static inline int security_task_movememory(struct task_struct *p)
1077 static inline int security_task_kill(struct task_struct *p,
1078 struct kernel_siginfo *info, int sig,
1079 const struct cred *cred)
1084 static inline int security_task_prctl(int option, unsigned long arg2,
1089 return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1092 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1095 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1101 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1106 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1111 static inline void security_msg_msg_free(struct msg_msg *msg)
1114 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1119 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1122 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1128 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1133 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1134 struct msg_msg *msg, int msqflg)
1139 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1140 struct msg_msg *msg,
1141 struct task_struct *target,
1142 long type, int mode)
1147 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1152 static inline void security_shm_free(struct kern_ipc_perm *shp)
1155 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1161 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1166 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1167 char __user *shmaddr, int shmflg)
1172 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1177 static inline void security_sem_free(struct kern_ipc_perm *sma)
1180 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1185 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1190 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1191 struct sembuf *sops, unsigned nsops,
1197 static inline void security_d_instantiate(struct dentry *dentry,
1198 struct inode *inode)
1201 static inline int security_getprocattr(struct task_struct *p, const char *lsm,
1202 char *name, char **value)
1207 static inline int security_setprocattr(const char *lsm, char *name,
1208 void *value, size_t size)
1213 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1218 static inline int security_ismaclabel(const char *name)
1223 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1228 static inline int security_secctx_to_secid(const char *secdata,
1235 static inline void security_release_secctx(char *secdata, u32 seclen)
1239 static inline void security_inode_invalidate_secctx(struct inode *inode)
1243 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1247 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1251 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1255 static inline int security_locked_down(enum lockdown_reason what)
1259 #endif /* CONFIG_SECURITY */
1261 #ifdef CONFIG_SECURITY_NETWORK
1263 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1264 int security_unix_may_send(struct socket *sock, struct socket *other);
1265 int security_socket_create(int family, int type, int protocol, int kern);
1266 int security_socket_post_create(struct socket *sock, int family,
1267 int type, int protocol, int kern);
1268 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1269 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1270 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1271 int security_socket_listen(struct socket *sock, int backlog);
1272 int security_socket_accept(struct socket *sock, struct socket *newsock);
1273 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1274 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1275 int size, int flags);
1276 int security_socket_getsockname(struct socket *sock);
1277 int security_socket_getpeername(struct socket *sock);
1278 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1279 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1280 int security_socket_shutdown(struct socket *sock, int how);
1281 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1282 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1283 int __user *optlen, unsigned len);
1284 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1285 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1286 void security_sk_free(struct sock *sk);
1287 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1288 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1289 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1290 void security_sock_graft(struct sock*sk, struct socket *parent);
1291 int security_inet_conn_request(struct sock *sk,
1292 struct sk_buff *skb, struct request_sock *req);
1293 void security_inet_csk_clone(struct sock *newsk,
1294 const struct request_sock *req);
1295 void security_inet_conn_established(struct sock *sk,
1296 struct sk_buff *skb);
1297 int security_secmark_relabel_packet(u32 secid);
1298 void security_secmark_refcount_inc(void);
1299 void security_secmark_refcount_dec(void);
1300 int security_tun_dev_alloc_security(void **security);
1301 void security_tun_dev_free_security(void *security);
1302 int security_tun_dev_create(void);
1303 int security_tun_dev_attach_queue(void *security);
1304 int security_tun_dev_attach(struct sock *sk, void *security);
1305 int security_tun_dev_open(void *security);
1306 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1307 int security_sctp_bind_connect(struct sock *sk, int optname,
1308 struct sockaddr *address, int addrlen);
1309 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1310 struct sock *newsk);
1312 #else /* CONFIG_SECURITY_NETWORK */
1313 static inline int security_unix_stream_connect(struct sock *sock,
1320 static inline int security_unix_may_send(struct socket *sock,
1321 struct socket *other)
1326 static inline int security_socket_create(int family, int type,
1327 int protocol, int kern)
1332 static inline int security_socket_post_create(struct socket *sock,
1335 int protocol, int kern)
1340 static inline int security_socket_socketpair(struct socket *socka,
1341 struct socket *sockb)
1346 static inline int security_socket_bind(struct socket *sock,
1347 struct sockaddr *address,
1353 static inline int security_socket_connect(struct socket *sock,
1354 struct sockaddr *address,
1360 static inline int security_socket_listen(struct socket *sock, int backlog)
1365 static inline int security_socket_accept(struct socket *sock,
1366 struct socket *newsock)
1371 static inline int security_socket_sendmsg(struct socket *sock,
1372 struct msghdr *msg, int size)
1377 static inline int security_socket_recvmsg(struct socket *sock,
1378 struct msghdr *msg, int size,
1384 static inline int security_socket_getsockname(struct socket *sock)
1389 static inline int security_socket_getpeername(struct socket *sock)
1394 static inline int security_socket_getsockopt(struct socket *sock,
1395 int level, int optname)
1400 static inline int security_socket_setsockopt(struct socket *sock,
1401 int level, int optname)
1406 static inline int security_socket_shutdown(struct socket *sock, int how)
1410 static inline int security_sock_rcv_skb(struct sock *sk,
1411 struct sk_buff *skb)
1416 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1417 int __user *optlen, unsigned len)
1419 return -ENOPROTOOPT;
1422 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1424 return -ENOPROTOOPT;
1427 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1432 static inline void security_sk_free(struct sock *sk)
1436 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1440 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1444 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1448 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1452 static inline int security_inet_conn_request(struct sock *sk,
1453 struct sk_buff *skb, struct request_sock *req)
1458 static inline void security_inet_csk_clone(struct sock *newsk,
1459 const struct request_sock *req)
1463 static inline void security_inet_conn_established(struct sock *sk,
1464 struct sk_buff *skb)
1468 static inline int security_secmark_relabel_packet(u32 secid)
1473 static inline void security_secmark_refcount_inc(void)
1477 static inline void security_secmark_refcount_dec(void)
1481 static inline int security_tun_dev_alloc_security(void **security)
1486 static inline void security_tun_dev_free_security(void *security)
1490 static inline int security_tun_dev_create(void)
1495 static inline int security_tun_dev_attach_queue(void *security)
1500 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1505 static inline int security_tun_dev_open(void *security)
1510 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1511 struct sk_buff *skb)
1516 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1517 struct sockaddr *address,
1523 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1528 #endif /* CONFIG_SECURITY_NETWORK */
1530 #ifdef CONFIG_SECURITY_INFINIBAND
1531 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1532 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1533 int security_ib_alloc_security(void **sec);
1534 void security_ib_free_security(void *sec);
1535 #else /* CONFIG_SECURITY_INFINIBAND */
1536 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1541 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1546 static inline int security_ib_alloc_security(void **sec)
1551 static inline void security_ib_free_security(void *sec)
1554 #endif /* CONFIG_SECURITY_INFINIBAND */
1556 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1558 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1559 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1560 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1561 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1562 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1563 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1564 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1565 struct xfrm_sec_ctx *polsec, u32 secid);
1566 int security_xfrm_state_delete(struct xfrm_state *x);
1567 void security_xfrm_state_free(struct xfrm_state *x);
1568 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1569 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1570 struct xfrm_policy *xp,
1571 const struct flowi *fl);
1572 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1573 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1575 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1577 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1578 struct xfrm_user_sec_ctx *sec_ctx,
1584 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1589 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1593 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1598 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1599 struct xfrm_user_sec_ctx *sec_ctx)
1604 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1605 struct xfrm_sec_ctx *polsec, u32 secid)
1610 static inline void security_xfrm_state_free(struct xfrm_state *x)
1614 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1619 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1624 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1625 struct xfrm_policy *xp, const struct flowi *fl)
1630 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1635 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1639 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1641 #ifdef CONFIG_SECURITY_PATH
1642 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1643 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1644 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1645 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1647 int security_path_truncate(const struct path *path);
1648 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1649 const char *old_name);
1650 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1651 struct dentry *new_dentry);
1652 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1653 const struct path *new_dir, struct dentry *new_dentry,
1654 unsigned int flags);
1655 int security_path_chmod(const struct path *path, umode_t mode);
1656 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1657 int security_path_chroot(const struct path *path);
1658 #else /* CONFIG_SECURITY_PATH */
1659 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1664 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1670 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1675 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1676 umode_t mode, unsigned int dev)
1681 static inline int security_path_truncate(const struct path *path)
1686 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1687 const char *old_name)
1692 static inline int security_path_link(struct dentry *old_dentry,
1693 const struct path *new_dir,
1694 struct dentry *new_dentry)
1699 static inline int security_path_rename(const struct path *old_dir,
1700 struct dentry *old_dentry,
1701 const struct path *new_dir,
1702 struct dentry *new_dentry,
1708 static inline int security_path_chmod(const struct path *path, umode_t mode)
1713 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1718 static inline int security_path_chroot(const struct path *path)
1722 #endif /* CONFIG_SECURITY_PATH */
1725 #ifdef CONFIG_SECURITY
1727 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1728 void security_key_free(struct key *key);
1729 int security_key_permission(key_ref_t key_ref,
1730 const struct cred *cred, unsigned perm);
1731 int security_key_getsecurity(struct key *key, char **_buffer);
1735 static inline int security_key_alloc(struct key *key,
1736 const struct cred *cred,
1737 unsigned long flags)
1742 static inline void security_key_free(struct key *key)
1746 static inline int security_key_permission(key_ref_t key_ref,
1747 const struct cred *cred,
1753 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1760 #endif /* CONFIG_KEYS */
1763 #ifdef CONFIG_SECURITY
1764 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1765 int security_audit_rule_known(struct audit_krule *krule);
1766 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule);
1767 void security_audit_rule_free(void *lsmrule);
1771 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1777 static inline int security_audit_rule_known(struct audit_krule *krule)
1782 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1788 static inline void security_audit_rule_free(void *lsmrule)
1791 #endif /* CONFIG_SECURITY */
1792 #endif /* CONFIG_AUDIT */
1794 #ifdef CONFIG_SECURITYFS
1796 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1797 struct dentry *parent, void *data,
1798 const struct file_operations *fops);
1799 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1800 struct dentry *securityfs_create_symlink(const char *name,
1801 struct dentry *parent,
1803 const struct inode_operations *iops);
1804 extern void securityfs_remove(struct dentry *dentry);
1806 #else /* CONFIG_SECURITYFS */
1808 static inline struct dentry *securityfs_create_dir(const char *name,
1809 struct dentry *parent)
1811 return ERR_PTR(-ENODEV);
1814 static inline struct dentry *securityfs_create_file(const char *name,
1816 struct dentry *parent,
1818 const struct file_operations *fops)
1820 return ERR_PTR(-ENODEV);
1823 static inline struct dentry *securityfs_create_symlink(const char *name,
1824 struct dentry *parent,
1826 const struct inode_operations *iops)
1828 return ERR_PTR(-ENODEV);
1831 static inline void securityfs_remove(struct dentry *dentry)
1836 #ifdef CONFIG_BPF_SYSCALL
1840 struct bpf_prog_aux;
1841 #ifdef CONFIG_SECURITY
1842 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1843 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1844 extern int security_bpf_prog(struct bpf_prog *prog);
1845 extern int security_bpf_map_alloc(struct bpf_map *map);
1846 extern void security_bpf_map_free(struct bpf_map *map);
1847 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1848 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1850 static inline int security_bpf(int cmd, union bpf_attr *attr,
1856 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1861 static inline int security_bpf_prog(struct bpf_prog *prog)
1866 static inline int security_bpf_map_alloc(struct bpf_map *map)
1871 static inline void security_bpf_map_free(struct bpf_map *map)
1874 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1879 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1881 #endif /* CONFIG_SECURITY */
1882 #endif /* CONFIG_BPF_SYSCALL */
1884 #endif /* ! __LINUX_SECURITY_H */