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,
118 LOCKDOWN_INTEGRITY_MAX,
119 LOCKDOWN_CONFIDENTIALITY_MAX,
122 /* These functions are in security/commoncap.c */
123 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
124 int cap, unsigned int opts);
125 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
126 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
127 extern int cap_ptrace_traceme(struct task_struct *parent);
128 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
129 extern int cap_capset(struct cred *new, const struct cred *old,
130 const kernel_cap_t *effective,
131 const kernel_cap_t *inheritable,
132 const kernel_cap_t *permitted);
133 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
134 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
135 const void *value, size_t size, int flags);
136 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
137 extern int cap_inode_need_killpriv(struct dentry *dentry);
138 extern int cap_inode_killpriv(struct dentry *dentry);
139 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
140 void **buffer, bool alloc);
141 extern int cap_mmap_addr(unsigned long addr);
142 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
143 unsigned long prot, unsigned long flags);
144 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
145 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
146 unsigned long arg4, unsigned long arg5);
147 extern int cap_task_setscheduler(struct task_struct *p);
148 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
149 extern int cap_task_setnice(struct task_struct *p, int nice);
150 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
159 struct xfrm_selector;
162 struct xfrm_user_sec_ctx;
164 struct sctp_endpoint;
167 extern unsigned long mmap_min_addr;
168 extern unsigned long dac_mmap_min_addr;
170 #define mmap_min_addr 0UL
171 #define dac_mmap_min_addr 0UL
175 * Values used in the task_security_ops calls
177 /* setuid or setgid, id0 == uid or gid */
178 #define LSM_SETID_ID 1
180 /* setreuid or setregid, id0 == real, id1 == eff */
181 #define LSM_SETID_RE 2
183 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
184 #define LSM_SETID_RES 4
186 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
187 #define LSM_SETID_FS 8
189 /* Flags for security_task_prlimit(). */
190 #define LSM_PRLIMIT_READ 1
191 #define LSM_PRLIMIT_WRITE 2
193 /* forward declares to avoid warnings */
197 /* bprm->unsafe reasons */
198 #define LSM_UNSAFE_SHARE 1
199 #define LSM_UNSAFE_PTRACE 2
200 #define LSM_UNSAFE_NO_NEW_PRIVS 4
203 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
204 void __user *buffer, size_t *lenp, loff_t *ppos);
207 /* security_inode_init_security callback function to write xattrs */
208 typedef int (*initxattrs) (struct inode *inode,
209 const struct xattr *xattr_array, void *fs_data);
212 /* Keep the kernel_load_data_id enum in sync with kernel_read_file_id */
213 #define __data_id_enumify(ENUM, dummy) LOADING_ ## ENUM,
214 #define __data_id_stringify(dummy, str) #str,
216 enum kernel_load_data_id {
217 __kernel_read_file_id(__data_id_enumify)
220 static const char * const kernel_load_data_str[] = {
221 __kernel_read_file_id(__data_id_stringify)
224 static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
226 if ((unsigned)id >= LOADING_MAX_ID)
227 return kernel_load_data_str[LOADING_UNKNOWN];
229 return kernel_load_data_str[id];
232 #ifdef CONFIG_SECURITY
234 int call_lsm_notifier(enum lsm_event event, void *data);
235 int register_lsm_notifier(struct notifier_block *nb);
236 int unregister_lsm_notifier(struct notifier_block *nb);
239 extern int security_init(void);
240 extern int early_security_init(void);
242 /* Security operations */
243 int security_binder_set_context_mgr(struct task_struct *mgr);
244 int security_binder_transaction(struct task_struct *from,
245 struct task_struct *to);
246 int security_binder_transfer_binder(struct task_struct *from,
247 struct task_struct *to);
248 int security_binder_transfer_file(struct task_struct *from,
249 struct task_struct *to, struct file *file);
250 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
251 int security_ptrace_traceme(struct task_struct *parent);
252 int security_capget(struct task_struct *target,
253 kernel_cap_t *effective,
254 kernel_cap_t *inheritable,
255 kernel_cap_t *permitted);
256 int security_capset(struct cred *new, const struct cred *old,
257 const kernel_cap_t *effective,
258 const kernel_cap_t *inheritable,
259 const kernel_cap_t *permitted);
260 int security_capable(const struct cred *cred,
261 struct user_namespace *ns,
264 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
265 int security_quota_on(struct dentry *dentry);
266 int security_syslog(int type);
267 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
268 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
269 int security_bprm_set_creds(struct linux_binprm *bprm);
270 int security_bprm_check(struct linux_binprm *bprm);
271 void security_bprm_committing_creds(struct linux_binprm *bprm);
272 void security_bprm_committed_creds(struct linux_binprm *bprm);
273 int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc);
274 int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param);
275 int security_sb_alloc(struct super_block *sb);
276 void security_sb_free(struct super_block *sb);
277 void security_free_mnt_opts(void **mnt_opts);
278 int security_sb_eat_lsm_opts(char *options, void **mnt_opts);
279 int security_sb_remount(struct super_block *sb, void *mnt_opts);
280 int security_sb_kern_mount(struct super_block *sb);
281 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
282 int security_sb_statfs(struct dentry *dentry);
283 int security_sb_mount(const char *dev_name, const struct path *path,
284 const char *type, unsigned long flags, void *data);
285 int security_sb_umount(struct vfsmount *mnt, int flags);
286 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
287 int security_sb_set_mnt_opts(struct super_block *sb,
289 unsigned long kern_flags,
290 unsigned long *set_kern_flags);
291 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
292 struct super_block *newsb,
293 unsigned long kern_flags,
294 unsigned long *set_kern_flags);
295 int security_add_mnt_opt(const char *option, const char *val,
296 int len, void **mnt_opts);
297 int security_move_mount(const struct path *from_path, const struct path *to_path);
298 int security_dentry_init_security(struct dentry *dentry, int mode,
299 const struct qstr *name, void **ctx,
301 int security_dentry_create_files_as(struct dentry *dentry, int mode,
303 const struct cred *old,
306 int security_inode_alloc(struct inode *inode);
307 void security_inode_free(struct inode *inode);
308 int security_inode_init_security(struct inode *inode, struct inode *dir,
309 const struct qstr *qstr,
310 initxattrs initxattrs, void *fs_data);
311 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
312 const struct qstr *qstr, const char **name,
313 void **value, size_t *len);
314 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
315 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
316 struct dentry *new_dentry);
317 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
318 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
319 const char *old_name);
320 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
321 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
322 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
323 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
324 struct inode *new_dir, struct dentry *new_dentry,
326 int security_inode_readlink(struct dentry *dentry);
327 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
329 int security_inode_permission(struct inode *inode, int mask);
330 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
331 int security_inode_getattr(const struct path *path);
332 int security_inode_setxattr(struct dentry *dentry, const char *name,
333 const void *value, size_t size, int flags);
334 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
335 const void *value, size_t size, int flags);
336 int security_inode_getxattr(struct dentry *dentry, const char *name);
337 int security_inode_listxattr(struct dentry *dentry);
338 int security_inode_removexattr(struct dentry *dentry, const char *name);
339 int security_inode_need_killpriv(struct dentry *dentry);
340 int security_inode_killpriv(struct dentry *dentry);
341 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
342 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
343 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
344 void security_inode_getsecid(struct inode *inode, u32 *secid);
345 int security_inode_copy_up(struct dentry *src, struct cred **new);
346 int security_inode_copy_up_xattr(const char *name);
347 int security_kernfs_init_security(struct kernfs_node *kn_dir,
348 struct kernfs_node *kn);
349 int security_file_permission(struct file *file, int mask);
350 int security_file_alloc(struct file *file);
351 void security_file_free(struct file *file);
352 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
353 int security_mmap_file(struct file *file, unsigned long prot,
354 unsigned long flags);
355 int security_mmap_addr(unsigned long addr);
356 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
358 int security_file_lock(struct file *file, unsigned int cmd);
359 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
360 void security_file_set_fowner(struct file *file);
361 int security_file_send_sigiotask(struct task_struct *tsk,
362 struct fown_struct *fown, int sig);
363 int security_file_receive(struct file *file);
364 int security_file_open(struct file *file);
365 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
366 void security_task_free(struct task_struct *task);
367 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
368 void security_cred_free(struct cred *cred);
369 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
370 void security_transfer_creds(struct cred *new, const struct cred *old);
371 void security_cred_getsecid(const struct cred *c, u32 *secid);
372 int security_kernel_act_as(struct cred *new, u32 secid);
373 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
374 int security_kernel_module_request(char *kmod_name);
375 int security_kernel_load_data(enum kernel_load_data_id id);
376 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
377 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
378 enum kernel_read_file_id id);
379 int security_task_fix_setuid(struct cred *new, const struct cred *old,
381 int security_task_setpgid(struct task_struct *p, pid_t pgid);
382 int security_task_getpgid(struct task_struct *p);
383 int security_task_getsid(struct task_struct *p);
384 void security_task_getsecid(struct task_struct *p, u32 *secid);
385 int security_task_setnice(struct task_struct *p, int nice);
386 int security_task_setioprio(struct task_struct *p, int ioprio);
387 int security_task_getioprio(struct task_struct *p);
388 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
390 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
391 struct rlimit *new_rlim);
392 int security_task_setscheduler(struct task_struct *p);
393 int security_task_getscheduler(struct task_struct *p);
394 int security_task_movememory(struct task_struct *p);
395 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
396 int sig, const struct cred *cred);
397 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
398 unsigned long arg4, unsigned long arg5);
399 void security_task_to_inode(struct task_struct *p, struct inode *inode);
400 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
401 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
402 int security_msg_msg_alloc(struct msg_msg *msg);
403 void security_msg_msg_free(struct msg_msg *msg);
404 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
405 void security_msg_queue_free(struct kern_ipc_perm *msq);
406 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
407 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
408 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
409 struct msg_msg *msg, int msqflg);
410 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
411 struct task_struct *target, long type, int mode);
412 int security_shm_alloc(struct kern_ipc_perm *shp);
413 void security_shm_free(struct kern_ipc_perm *shp);
414 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
415 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
416 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
417 int security_sem_alloc(struct kern_ipc_perm *sma);
418 void security_sem_free(struct kern_ipc_perm *sma);
419 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
420 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
421 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
422 unsigned nsops, int alter);
423 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
424 int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
426 int security_setprocattr(const char *lsm, const char *name, void *value,
428 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
429 int security_ismaclabel(const char *name);
430 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
431 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
432 void security_release_secctx(char *secdata, u32 seclen);
434 void security_inode_invalidate_secctx(struct inode *inode);
435 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
436 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
437 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
438 int security_locked_down(enum lockdown_reason what);
439 #else /* CONFIG_SECURITY */
441 static inline int call_lsm_notifier(enum lsm_event event, void *data)
446 static inline int register_lsm_notifier(struct notifier_block *nb)
451 static inline int unregister_lsm_notifier(struct notifier_block *nb)
456 static inline void security_free_mnt_opts(void **mnt_opts)
461 * This is the default capabilities functionality. Most of these functions
462 * are just stubbed out, but a few must call the proper capable code.
465 static inline int security_init(void)
470 static inline int early_security_init(void)
475 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
480 static inline int security_binder_transaction(struct task_struct *from,
481 struct task_struct *to)
486 static inline int security_binder_transfer_binder(struct task_struct *from,
487 struct task_struct *to)
492 static inline int security_binder_transfer_file(struct task_struct *from,
493 struct task_struct *to,
499 static inline int security_ptrace_access_check(struct task_struct *child,
502 return cap_ptrace_access_check(child, mode);
505 static inline int security_ptrace_traceme(struct task_struct *parent)
507 return cap_ptrace_traceme(parent);
510 static inline int security_capget(struct task_struct *target,
511 kernel_cap_t *effective,
512 kernel_cap_t *inheritable,
513 kernel_cap_t *permitted)
515 return cap_capget(target, effective, inheritable, permitted);
518 static inline int security_capset(struct cred *new,
519 const struct cred *old,
520 const kernel_cap_t *effective,
521 const kernel_cap_t *inheritable,
522 const kernel_cap_t *permitted)
524 return cap_capset(new, old, effective, inheritable, permitted);
527 static inline int security_capable(const struct cred *cred,
528 struct user_namespace *ns,
532 return cap_capable(cred, ns, cap, opts);
535 static inline int security_quotactl(int cmds, int type, int id,
536 struct super_block *sb)
541 static inline int security_quota_on(struct dentry *dentry)
546 static inline int security_syslog(int type)
551 static inline int security_settime64(const struct timespec64 *ts,
552 const struct timezone *tz)
554 return cap_settime(ts, tz);
557 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
559 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
562 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
564 return cap_bprm_set_creds(bprm);
567 static inline int security_bprm_check(struct linux_binprm *bprm)
572 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
576 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
580 static inline int security_fs_context_dup(struct fs_context *fc,
581 struct fs_context *src_fc)
585 static inline int security_fs_context_parse_param(struct fs_context *fc,
586 struct fs_parameter *param)
591 static inline int security_sb_alloc(struct super_block *sb)
596 static inline void security_sb_free(struct super_block *sb)
599 static inline int security_sb_eat_lsm_opts(char *options,
605 static inline int security_sb_remount(struct super_block *sb,
611 static inline int security_sb_kern_mount(struct super_block *sb)
616 static inline int security_sb_show_options(struct seq_file *m,
617 struct super_block *sb)
622 static inline int security_sb_statfs(struct dentry *dentry)
627 static inline int security_sb_mount(const char *dev_name, const struct path *path,
628 const char *type, unsigned long flags,
634 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
639 static inline int security_sb_pivotroot(const struct path *old_path,
640 const struct path *new_path)
645 static inline int security_sb_set_mnt_opts(struct super_block *sb,
647 unsigned long kern_flags,
648 unsigned long *set_kern_flags)
653 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
654 struct super_block *newsb,
655 unsigned long kern_flags,
656 unsigned long *set_kern_flags)
661 static inline int security_add_mnt_opt(const char *option, const char *val,
662 int len, void **mnt_opts)
667 static inline int security_move_mount(const struct path *from_path,
668 const struct path *to_path)
673 static inline int security_inode_alloc(struct inode *inode)
678 static inline void security_inode_free(struct inode *inode)
681 static inline int security_dentry_init_security(struct dentry *dentry,
683 const struct qstr *name,
690 static inline int security_dentry_create_files_as(struct dentry *dentry,
691 int mode, struct qstr *name,
692 const struct cred *old,
699 static inline int security_inode_init_security(struct inode *inode,
701 const struct qstr *qstr,
702 const initxattrs xattrs,
708 static inline int security_old_inode_init_security(struct inode *inode,
710 const struct qstr *qstr,
712 void **value, size_t *len)
717 static inline int security_inode_create(struct inode *dir,
718 struct dentry *dentry,
724 static inline int security_inode_link(struct dentry *old_dentry,
726 struct dentry *new_dentry)
731 static inline int security_inode_unlink(struct inode *dir,
732 struct dentry *dentry)
737 static inline int security_inode_symlink(struct inode *dir,
738 struct dentry *dentry,
739 const char *old_name)
744 static inline int security_inode_mkdir(struct inode *dir,
745 struct dentry *dentry,
751 static inline int security_inode_rmdir(struct inode *dir,
752 struct dentry *dentry)
757 static inline int security_inode_mknod(struct inode *dir,
758 struct dentry *dentry,
764 static inline int security_inode_rename(struct inode *old_dir,
765 struct dentry *old_dentry,
766 struct inode *new_dir,
767 struct dentry *new_dentry,
773 static inline int security_inode_readlink(struct dentry *dentry)
778 static inline int security_inode_follow_link(struct dentry *dentry,
785 static inline int security_inode_permission(struct inode *inode, int mask)
790 static inline int security_inode_setattr(struct dentry *dentry,
796 static inline int security_inode_getattr(const struct path *path)
801 static inline int security_inode_setxattr(struct dentry *dentry,
802 const char *name, const void *value, size_t size, int flags)
804 return cap_inode_setxattr(dentry, name, value, size, flags);
807 static inline void security_inode_post_setxattr(struct dentry *dentry,
808 const char *name, const void *value, size_t size, int flags)
811 static inline int security_inode_getxattr(struct dentry *dentry,
817 static inline int security_inode_listxattr(struct dentry *dentry)
822 static inline int security_inode_removexattr(struct dentry *dentry,
825 return cap_inode_removexattr(dentry, name);
828 static inline int security_inode_need_killpriv(struct dentry *dentry)
830 return cap_inode_need_killpriv(dentry);
833 static inline int security_inode_killpriv(struct dentry *dentry)
835 return cap_inode_killpriv(dentry);
838 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
843 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
848 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
853 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
858 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
863 static inline int security_kernfs_init_security(struct kernfs_node *kn_dir,
864 struct kernfs_node *kn)
869 static inline int security_inode_copy_up_xattr(const char *name)
874 static inline int security_file_permission(struct file *file, int mask)
879 static inline int security_file_alloc(struct file *file)
884 static inline void security_file_free(struct file *file)
887 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
893 static inline int security_mmap_file(struct file *file, unsigned long prot,
899 static inline int security_mmap_addr(unsigned long addr)
901 return cap_mmap_addr(addr);
904 static inline int security_file_mprotect(struct vm_area_struct *vma,
905 unsigned long reqprot,
911 static inline int security_file_lock(struct file *file, unsigned int cmd)
916 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
922 static inline void security_file_set_fowner(struct file *file)
927 static inline int security_file_send_sigiotask(struct task_struct *tsk,
928 struct fown_struct *fown,
934 static inline int security_file_receive(struct file *file)
939 static inline int security_file_open(struct file *file)
944 static inline int security_task_alloc(struct task_struct *task,
945 unsigned long clone_flags)
950 static inline void security_task_free(struct task_struct *task)
953 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
958 static inline void security_cred_free(struct cred *cred)
961 static inline int security_prepare_creds(struct cred *new,
962 const struct cred *old,
968 static inline void security_transfer_creds(struct cred *new,
969 const struct cred *old)
973 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
978 static inline int security_kernel_create_files_as(struct cred *cred,
984 static inline int security_kernel_module_request(char *kmod_name)
989 static inline int security_kernel_load_data(enum kernel_load_data_id id)
994 static inline int security_kernel_read_file(struct file *file,
995 enum kernel_read_file_id id)
1000 static inline int security_kernel_post_read_file(struct file *file,
1001 char *buf, loff_t size,
1002 enum kernel_read_file_id id)
1007 static inline int security_task_fix_setuid(struct cred *new,
1008 const struct cred *old,
1011 return cap_task_fix_setuid(new, old, flags);
1014 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
1019 static inline int security_task_getpgid(struct task_struct *p)
1024 static inline int security_task_getsid(struct task_struct *p)
1029 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
1034 static inline int security_task_setnice(struct task_struct *p, int nice)
1036 return cap_task_setnice(p, nice);
1039 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
1041 return cap_task_setioprio(p, ioprio);
1044 static inline int security_task_getioprio(struct task_struct *p)
1049 static inline int security_task_prlimit(const struct cred *cred,
1050 const struct cred *tcred,
1056 static inline int security_task_setrlimit(struct task_struct *p,
1057 unsigned int resource,
1058 struct rlimit *new_rlim)
1063 static inline int security_task_setscheduler(struct task_struct *p)
1065 return cap_task_setscheduler(p);
1068 static inline int security_task_getscheduler(struct task_struct *p)
1073 static inline int security_task_movememory(struct task_struct *p)
1078 static inline int security_task_kill(struct task_struct *p,
1079 struct kernel_siginfo *info, int sig,
1080 const struct cred *cred)
1085 static inline int security_task_prctl(int option, unsigned long arg2,
1090 return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1093 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1096 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1102 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1107 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1112 static inline void security_msg_msg_free(struct msg_msg *msg)
1115 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1120 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1123 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1129 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1134 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1135 struct msg_msg *msg, int msqflg)
1140 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1141 struct msg_msg *msg,
1142 struct task_struct *target,
1143 long type, int mode)
1148 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1153 static inline void security_shm_free(struct kern_ipc_perm *shp)
1156 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1162 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1167 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1168 char __user *shmaddr, int shmflg)
1173 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1178 static inline void security_sem_free(struct kern_ipc_perm *sma)
1181 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1186 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1191 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1192 struct sembuf *sops, unsigned nsops,
1198 static inline void security_d_instantiate(struct dentry *dentry,
1199 struct inode *inode)
1202 static inline int security_getprocattr(struct task_struct *p, const char *lsm,
1203 char *name, char **value)
1208 static inline int security_setprocattr(const char *lsm, char *name,
1209 void *value, size_t size)
1214 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1219 static inline int security_ismaclabel(const char *name)
1224 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1229 static inline int security_secctx_to_secid(const char *secdata,
1236 static inline void security_release_secctx(char *secdata, u32 seclen)
1240 static inline void security_inode_invalidate_secctx(struct inode *inode)
1244 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1248 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1252 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1256 static inline int security_locked_down(enum lockdown_reason what)
1260 #endif /* CONFIG_SECURITY */
1262 #ifdef CONFIG_SECURITY_NETWORK
1264 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1265 int security_unix_may_send(struct socket *sock, struct socket *other);
1266 int security_socket_create(int family, int type, int protocol, int kern);
1267 int security_socket_post_create(struct socket *sock, int family,
1268 int type, int protocol, int kern);
1269 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1270 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1271 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1272 int security_socket_listen(struct socket *sock, int backlog);
1273 int security_socket_accept(struct socket *sock, struct socket *newsock);
1274 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1275 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1276 int size, int flags);
1277 int security_socket_getsockname(struct socket *sock);
1278 int security_socket_getpeername(struct socket *sock);
1279 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1280 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1281 int security_socket_shutdown(struct socket *sock, int how);
1282 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1283 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1284 int __user *optlen, unsigned len);
1285 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1286 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1287 void security_sk_free(struct sock *sk);
1288 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1289 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1290 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1291 void security_sock_graft(struct sock*sk, struct socket *parent);
1292 int security_inet_conn_request(struct sock *sk,
1293 struct sk_buff *skb, struct request_sock *req);
1294 void security_inet_csk_clone(struct sock *newsk,
1295 const struct request_sock *req);
1296 void security_inet_conn_established(struct sock *sk,
1297 struct sk_buff *skb);
1298 int security_secmark_relabel_packet(u32 secid);
1299 void security_secmark_refcount_inc(void);
1300 void security_secmark_refcount_dec(void);
1301 int security_tun_dev_alloc_security(void **security);
1302 void security_tun_dev_free_security(void *security);
1303 int security_tun_dev_create(void);
1304 int security_tun_dev_attach_queue(void *security);
1305 int security_tun_dev_attach(struct sock *sk, void *security);
1306 int security_tun_dev_open(void *security);
1307 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1308 int security_sctp_bind_connect(struct sock *sk, int optname,
1309 struct sockaddr *address, int addrlen);
1310 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1311 struct sock *newsk);
1313 #else /* CONFIG_SECURITY_NETWORK */
1314 static inline int security_unix_stream_connect(struct sock *sock,
1321 static inline int security_unix_may_send(struct socket *sock,
1322 struct socket *other)
1327 static inline int security_socket_create(int family, int type,
1328 int protocol, int kern)
1333 static inline int security_socket_post_create(struct socket *sock,
1336 int protocol, int kern)
1341 static inline int security_socket_socketpair(struct socket *socka,
1342 struct socket *sockb)
1347 static inline int security_socket_bind(struct socket *sock,
1348 struct sockaddr *address,
1354 static inline int security_socket_connect(struct socket *sock,
1355 struct sockaddr *address,
1361 static inline int security_socket_listen(struct socket *sock, int backlog)
1366 static inline int security_socket_accept(struct socket *sock,
1367 struct socket *newsock)
1372 static inline int security_socket_sendmsg(struct socket *sock,
1373 struct msghdr *msg, int size)
1378 static inline int security_socket_recvmsg(struct socket *sock,
1379 struct msghdr *msg, int size,
1385 static inline int security_socket_getsockname(struct socket *sock)
1390 static inline int security_socket_getpeername(struct socket *sock)
1395 static inline int security_socket_getsockopt(struct socket *sock,
1396 int level, int optname)
1401 static inline int security_socket_setsockopt(struct socket *sock,
1402 int level, int optname)
1407 static inline int security_socket_shutdown(struct socket *sock, int how)
1411 static inline int security_sock_rcv_skb(struct sock *sk,
1412 struct sk_buff *skb)
1417 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1418 int __user *optlen, unsigned len)
1420 return -ENOPROTOOPT;
1423 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1425 return -ENOPROTOOPT;
1428 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1433 static inline void security_sk_free(struct sock *sk)
1437 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1441 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1445 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1449 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1453 static inline int security_inet_conn_request(struct sock *sk,
1454 struct sk_buff *skb, struct request_sock *req)
1459 static inline void security_inet_csk_clone(struct sock *newsk,
1460 const struct request_sock *req)
1464 static inline void security_inet_conn_established(struct sock *sk,
1465 struct sk_buff *skb)
1469 static inline int security_secmark_relabel_packet(u32 secid)
1474 static inline void security_secmark_refcount_inc(void)
1478 static inline void security_secmark_refcount_dec(void)
1482 static inline int security_tun_dev_alloc_security(void **security)
1487 static inline void security_tun_dev_free_security(void *security)
1491 static inline int security_tun_dev_create(void)
1496 static inline int security_tun_dev_attach_queue(void *security)
1501 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1506 static inline int security_tun_dev_open(void *security)
1511 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1512 struct sk_buff *skb)
1517 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1518 struct sockaddr *address,
1524 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1529 #endif /* CONFIG_SECURITY_NETWORK */
1531 #ifdef CONFIG_SECURITY_INFINIBAND
1532 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1533 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1534 int security_ib_alloc_security(void **sec);
1535 void security_ib_free_security(void *sec);
1536 #else /* CONFIG_SECURITY_INFINIBAND */
1537 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1542 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1547 static inline int security_ib_alloc_security(void **sec)
1552 static inline void security_ib_free_security(void *sec)
1555 #endif /* CONFIG_SECURITY_INFINIBAND */
1557 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1559 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1560 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1561 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1562 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1563 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1564 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1565 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1566 struct xfrm_sec_ctx *polsec, u32 secid);
1567 int security_xfrm_state_delete(struct xfrm_state *x);
1568 void security_xfrm_state_free(struct xfrm_state *x);
1569 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1570 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1571 struct xfrm_policy *xp,
1572 const struct flowi *fl);
1573 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1574 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1576 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1578 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1579 struct xfrm_user_sec_ctx *sec_ctx,
1585 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1590 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1594 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1599 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1600 struct xfrm_user_sec_ctx *sec_ctx)
1605 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1606 struct xfrm_sec_ctx *polsec, u32 secid)
1611 static inline void security_xfrm_state_free(struct xfrm_state *x)
1615 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1620 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1625 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1626 struct xfrm_policy *xp, const struct flowi *fl)
1631 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1636 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1640 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1642 #ifdef CONFIG_SECURITY_PATH
1643 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1644 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1645 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1646 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1648 int security_path_truncate(const struct path *path);
1649 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1650 const char *old_name);
1651 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1652 struct dentry *new_dentry);
1653 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1654 const struct path *new_dir, struct dentry *new_dentry,
1655 unsigned int flags);
1656 int security_path_chmod(const struct path *path, umode_t mode);
1657 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1658 int security_path_chroot(const struct path *path);
1659 #else /* CONFIG_SECURITY_PATH */
1660 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1665 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1671 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1676 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1677 umode_t mode, unsigned int dev)
1682 static inline int security_path_truncate(const struct path *path)
1687 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1688 const char *old_name)
1693 static inline int security_path_link(struct dentry *old_dentry,
1694 const struct path *new_dir,
1695 struct dentry *new_dentry)
1700 static inline int security_path_rename(const struct path *old_dir,
1701 struct dentry *old_dentry,
1702 const struct path *new_dir,
1703 struct dentry *new_dentry,
1709 static inline int security_path_chmod(const struct path *path, umode_t mode)
1714 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1719 static inline int security_path_chroot(const struct path *path)
1723 #endif /* CONFIG_SECURITY_PATH */
1726 #ifdef CONFIG_SECURITY
1728 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1729 void security_key_free(struct key *key);
1730 int security_key_permission(key_ref_t key_ref,
1731 const struct cred *cred, unsigned perm);
1732 int security_key_getsecurity(struct key *key, char **_buffer);
1736 static inline int security_key_alloc(struct key *key,
1737 const struct cred *cred,
1738 unsigned long flags)
1743 static inline void security_key_free(struct key *key)
1747 static inline int security_key_permission(key_ref_t key_ref,
1748 const struct cred *cred,
1754 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1761 #endif /* CONFIG_KEYS */
1764 #ifdef CONFIG_SECURITY
1765 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1766 int security_audit_rule_known(struct audit_krule *krule);
1767 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule);
1768 void security_audit_rule_free(void *lsmrule);
1772 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1778 static inline int security_audit_rule_known(struct audit_krule *krule)
1783 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1789 static inline void security_audit_rule_free(void *lsmrule)
1792 #endif /* CONFIG_SECURITY */
1793 #endif /* CONFIG_AUDIT */
1795 #ifdef CONFIG_SECURITYFS
1797 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1798 struct dentry *parent, void *data,
1799 const struct file_operations *fops);
1800 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1801 struct dentry *securityfs_create_symlink(const char *name,
1802 struct dentry *parent,
1804 const struct inode_operations *iops);
1805 extern void securityfs_remove(struct dentry *dentry);
1807 #else /* CONFIG_SECURITYFS */
1809 static inline struct dentry *securityfs_create_dir(const char *name,
1810 struct dentry *parent)
1812 return ERR_PTR(-ENODEV);
1815 static inline struct dentry *securityfs_create_file(const char *name,
1817 struct dentry *parent,
1819 const struct file_operations *fops)
1821 return ERR_PTR(-ENODEV);
1824 static inline struct dentry *securityfs_create_symlink(const char *name,
1825 struct dentry *parent,
1827 const struct inode_operations *iops)
1829 return ERR_PTR(-ENODEV);
1832 static inline void securityfs_remove(struct dentry *dentry)
1837 #ifdef CONFIG_BPF_SYSCALL
1841 struct bpf_prog_aux;
1842 #ifdef CONFIG_SECURITY
1843 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1844 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1845 extern int security_bpf_prog(struct bpf_prog *prog);
1846 extern int security_bpf_map_alloc(struct bpf_map *map);
1847 extern void security_bpf_map_free(struct bpf_map *map);
1848 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1849 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1851 static inline int security_bpf(int cmd, union bpf_attr *attr,
1857 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1862 static inline int security_bpf_prog(struct bpf_prog *prog)
1867 static inline int security_bpf_map_alloc(struct bpf_map *map)
1872 static inline void security_bpf_map_free(struct bpf_map *map)
1875 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1880 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1882 #endif /* CONFIG_SECURITY */
1883 #endif /* CONFIG_BPF_SYSCALL */
1885 #endif /* ! __LINUX_SECURITY_H */