8 * Copyright (C) 2001 Silicon Graphics, Inc. (Trust Technology Group)
9 * Copyright (C) 2016 Mellanox Techonologies
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * Due to this file being licensed under the GPL there is controversy over
17 * whether this permits you to write a module that #includes this file
18 * without placing your module under the GPL. Please consult a lawyer for
19 * advice before doing this.
23 #ifndef __LINUX_SECURITY_H
24 #define __LINUX_SECURITY_H
26 #include <linux/key.h>
27 #include <linux/capability.h>
29 #include <linux/slab.h>
30 #include <linux/err.h>
31 #include <linux/string.h>
51 struct file_operations;
57 /* If capable should audit the security request */
58 #define SECURITY_CAP_NOAUDIT 0
59 #define SECURITY_CAP_AUDIT 1
61 /* LSM Agnostic defines for sb_set_mnt_opts */
62 #define SECURITY_LSM_NATIVE_LABELS 1
66 struct user_namespace;
73 /* These functions are in security/commoncap.c */
74 extern int cap_capable(const struct cred *cred, struct user_namespace *ns,
76 extern int cap_settime(const struct timespec64 *ts, const struct timezone *tz);
77 extern int cap_ptrace_access_check(struct task_struct *child, unsigned int mode);
78 extern int cap_ptrace_traceme(struct task_struct *parent);
79 extern int cap_capget(struct task_struct *target, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted);
80 extern int cap_capset(struct cred *new, const struct cred *old,
81 const kernel_cap_t *effective,
82 const kernel_cap_t *inheritable,
83 const kernel_cap_t *permitted);
84 extern int cap_bprm_set_creds(struct linux_binprm *bprm);
85 extern int cap_inode_setxattr(struct dentry *dentry, const char *name,
86 const void *value, size_t size, int flags);
87 extern int cap_inode_removexattr(struct dentry *dentry, const char *name);
88 extern int cap_inode_need_killpriv(struct dentry *dentry);
89 extern int cap_inode_killpriv(struct dentry *dentry);
90 extern int cap_inode_getsecurity(struct inode *inode, const char *name,
91 void **buffer, bool alloc);
92 extern int cap_mmap_addr(unsigned long addr);
93 extern int cap_mmap_file(struct file *file, unsigned long reqprot,
94 unsigned long prot, unsigned long flags);
95 extern int cap_task_fix_setuid(struct cred *new, const struct cred *old, int flags);
96 extern int cap_task_prctl(int option, unsigned long arg2, unsigned long arg3,
97 unsigned long arg4, unsigned long arg5);
98 extern int cap_task_setscheduler(struct task_struct *p);
99 extern int cap_task_setioprio(struct task_struct *p, int ioprio);
100 extern int cap_task_setnice(struct task_struct *p, int nice);
101 extern int cap_vm_enough_memory(struct mm_struct *mm, long pages);
110 struct xfrm_selector;
113 struct xfrm_user_sec_ctx;
115 struct sctp_endpoint;
118 extern unsigned long mmap_min_addr;
119 extern unsigned long dac_mmap_min_addr;
121 #define mmap_min_addr 0UL
122 #define dac_mmap_min_addr 0UL
126 * Values used in the task_security_ops calls
128 /* setuid or setgid, id0 == uid or gid */
129 #define LSM_SETID_ID 1
131 /* setreuid or setregid, id0 == real, id1 == eff */
132 #define LSM_SETID_RE 2
134 /* setresuid or setresgid, id0 == real, id1 == eff, uid2 == saved */
135 #define LSM_SETID_RES 4
137 /* setfsuid or setfsgid, id0 == fsuid or fsgid */
138 #define LSM_SETID_FS 8
140 /* Flags for security_task_prlimit(). */
141 #define LSM_PRLIMIT_READ 1
142 #define LSM_PRLIMIT_WRITE 2
144 /* forward declares to avoid warnings */
148 /* bprm->unsafe reasons */
149 #define LSM_UNSAFE_SHARE 1
150 #define LSM_UNSAFE_PTRACE 2
151 #define LSM_UNSAFE_NO_NEW_PRIVS 4
154 extern int mmap_min_addr_handler(struct ctl_table *table, int write,
155 void __user *buffer, size_t *lenp, loff_t *ppos);
158 /* security_inode_init_security callback function to write xattrs */
159 typedef int (*initxattrs) (struct inode *inode,
160 const struct xattr *xattr_array, void *fs_data);
162 #ifdef CONFIG_SECURITY
164 struct security_mnt_opts {
170 int call_lsm_notifier(enum lsm_event event, void *data);
171 int register_lsm_notifier(struct notifier_block *nb);
172 int unregister_lsm_notifier(struct notifier_block *nb);
174 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
176 opts->mnt_opts = NULL;
177 opts->mnt_opts_flags = NULL;
178 opts->num_mnt_opts = 0;
181 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
185 for (i = 0; i < opts->num_mnt_opts; i++)
186 kfree(opts->mnt_opts[i]);
187 kfree(opts->mnt_opts);
188 opts->mnt_opts = NULL;
189 kfree(opts->mnt_opts_flags);
190 opts->mnt_opts_flags = NULL;
191 opts->num_mnt_opts = 0;
195 extern int security_init(void);
197 /* Security operations */
198 int security_binder_set_context_mgr(struct task_struct *mgr);
199 int security_binder_transaction(struct task_struct *from,
200 struct task_struct *to);
201 int security_binder_transfer_binder(struct task_struct *from,
202 struct task_struct *to);
203 int security_binder_transfer_file(struct task_struct *from,
204 struct task_struct *to, struct file *file);
205 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
206 int security_ptrace_traceme(struct task_struct *parent);
207 int security_capget(struct task_struct *target,
208 kernel_cap_t *effective,
209 kernel_cap_t *inheritable,
210 kernel_cap_t *permitted);
211 int security_capset(struct cred *new, const struct cred *old,
212 const kernel_cap_t *effective,
213 const kernel_cap_t *inheritable,
214 const kernel_cap_t *permitted);
215 int security_capable(const struct cred *cred, struct user_namespace *ns,
217 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
219 int security_quotactl(int cmds, int type, int id, struct super_block *sb);
220 int security_quota_on(struct dentry *dentry);
221 int security_syslog(int type);
222 int security_settime64(const struct timespec64 *ts, const struct timezone *tz);
223 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages);
224 int security_bprm_set_creds(struct linux_binprm *bprm);
225 int security_bprm_check(struct linux_binprm *bprm);
226 void security_bprm_committing_creds(struct linux_binprm *bprm);
227 void security_bprm_committed_creds(struct linux_binprm *bprm);
228 int security_sb_alloc(struct super_block *sb);
229 void security_sb_free(struct super_block *sb);
230 int security_sb_copy_data(char *orig, char *copy);
231 int security_sb_remount(struct super_block *sb, void *data);
232 int security_sb_kern_mount(struct super_block *sb, int flags, void *data);
233 int security_sb_show_options(struct seq_file *m, struct super_block *sb);
234 int security_sb_statfs(struct dentry *dentry);
235 int security_sb_mount(const char *dev_name, const struct path *path,
236 const char *type, unsigned long flags, void *data);
237 int security_sb_umount(struct vfsmount *mnt, int flags);
238 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path);
239 int security_sb_set_mnt_opts(struct super_block *sb,
240 struct security_mnt_opts *opts,
241 unsigned long kern_flags,
242 unsigned long *set_kern_flags);
243 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
244 struct super_block *newsb,
245 unsigned long kern_flags,
246 unsigned long *set_kern_flags);
247 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts);
248 int security_dentry_init_security(struct dentry *dentry, int mode,
249 const struct qstr *name, void **ctx,
251 int security_dentry_create_files_as(struct dentry *dentry, int mode,
253 const struct cred *old,
256 int security_inode_alloc(struct inode *inode);
257 void security_inode_free(struct inode *inode);
258 int security_inode_init_security(struct inode *inode, struct inode *dir,
259 const struct qstr *qstr,
260 initxattrs initxattrs, void *fs_data);
261 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
262 const struct qstr *qstr, const char **name,
263 void **value, size_t *len);
264 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
265 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
266 struct dentry *new_dentry);
267 int security_inode_unlink(struct inode *dir, struct dentry *dentry);
268 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
269 const char *old_name);
270 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode);
271 int security_inode_rmdir(struct inode *dir, struct dentry *dentry);
272 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev);
273 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
274 struct inode *new_dir, struct dentry *new_dentry,
276 int security_inode_readlink(struct dentry *dentry);
277 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
279 int security_inode_permission(struct inode *inode, int mask);
280 int security_inode_setattr(struct dentry *dentry, struct iattr *attr);
281 int security_inode_getattr(const struct path *path);
282 int security_inode_setxattr(struct dentry *dentry, const char *name,
283 const void *value, size_t size, int flags);
284 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
285 const void *value, size_t size, int flags);
286 int security_inode_getxattr(struct dentry *dentry, const char *name);
287 int security_inode_listxattr(struct dentry *dentry);
288 int security_inode_removexattr(struct dentry *dentry, const char *name);
289 int security_inode_need_killpriv(struct dentry *dentry);
290 int security_inode_killpriv(struct dentry *dentry);
291 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc);
292 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags);
293 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size);
294 void security_inode_getsecid(struct inode *inode, u32 *secid);
295 int security_inode_copy_up(struct dentry *src, struct cred **new);
296 int security_inode_copy_up_xattr(const char *name);
297 int security_file_permission(struct file *file, int mask);
298 int security_file_alloc(struct file *file);
299 void security_file_free(struct file *file);
300 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
301 int security_mmap_file(struct file *file, unsigned long prot,
302 unsigned long flags);
303 int security_mmap_addr(unsigned long addr);
304 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
306 int security_file_lock(struct file *file, unsigned int cmd);
307 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg);
308 void security_file_set_fowner(struct file *file);
309 int security_file_send_sigiotask(struct task_struct *tsk,
310 struct fown_struct *fown, int sig);
311 int security_file_receive(struct file *file);
312 int security_file_open(struct file *file, const struct cred *cred);
313 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
314 void security_task_free(struct task_struct *task);
315 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
316 void security_cred_free(struct cred *cred);
317 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
318 void security_transfer_creds(struct cred *new, const struct cred *old);
319 void security_cred_getsecid(const struct cred *c, u32 *secid);
320 int security_kernel_act_as(struct cred *new, u32 secid);
321 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
322 int security_kernel_module_request(char *kmod_name);
323 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id);
324 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
325 enum kernel_read_file_id id);
326 int security_task_fix_setuid(struct cred *new, const struct cred *old,
328 int security_task_setpgid(struct task_struct *p, pid_t pgid);
329 int security_task_getpgid(struct task_struct *p);
330 int security_task_getsid(struct task_struct *p);
331 void security_task_getsecid(struct task_struct *p, u32 *secid);
332 int security_task_setnice(struct task_struct *p, int nice);
333 int security_task_setioprio(struct task_struct *p, int ioprio);
334 int security_task_getioprio(struct task_struct *p);
335 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
337 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
338 struct rlimit *new_rlim);
339 int security_task_setscheduler(struct task_struct *p);
340 int security_task_getscheduler(struct task_struct *p);
341 int security_task_movememory(struct task_struct *p);
342 int security_task_kill(struct task_struct *p, struct siginfo *info,
343 int sig, const struct cred *cred);
344 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
345 unsigned long arg4, unsigned long arg5);
346 void security_task_to_inode(struct task_struct *p, struct inode *inode);
347 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag);
348 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid);
349 int security_msg_msg_alloc(struct msg_msg *msg);
350 void security_msg_msg_free(struct msg_msg *msg);
351 int security_msg_queue_alloc(struct kern_ipc_perm *msq);
352 void security_msg_queue_free(struct kern_ipc_perm *msq);
353 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg);
354 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd);
355 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
356 struct msg_msg *msg, int msqflg);
357 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
358 struct task_struct *target, long type, int mode);
359 int security_shm_alloc(struct kern_ipc_perm *shp);
360 void security_shm_free(struct kern_ipc_perm *shp);
361 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg);
362 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd);
363 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg);
364 int security_sem_alloc(struct kern_ipc_perm *sma);
365 void security_sem_free(struct kern_ipc_perm *sma);
366 int security_sem_associate(struct kern_ipc_perm *sma, int semflg);
367 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd);
368 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
369 unsigned nsops, int alter);
370 void security_d_instantiate(struct dentry *dentry, struct inode *inode);
371 int security_getprocattr(struct task_struct *p, char *name, char **value);
372 int security_setprocattr(const char *name, void *value, size_t size);
373 int security_netlink_send(struct sock *sk, struct sk_buff *skb);
374 int security_ismaclabel(const char *name);
375 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen);
376 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid);
377 void security_release_secctx(char *secdata, u32 seclen);
379 void security_inode_invalidate_secctx(struct inode *inode);
380 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen);
381 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen);
382 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen);
383 #else /* CONFIG_SECURITY */
384 struct security_mnt_opts {
387 static inline int call_lsm_notifier(enum lsm_event event, void *data)
392 static inline int register_lsm_notifier(struct notifier_block *nb)
397 static inline int unregister_lsm_notifier(struct notifier_block *nb)
402 static inline void security_init_mnt_opts(struct security_mnt_opts *opts)
406 static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
411 * This is the default capabilities functionality. Most of these functions
412 * are just stubbed out, but a few must call the proper capable code.
415 static inline int security_init(void)
420 static inline int security_binder_set_context_mgr(struct task_struct *mgr)
425 static inline int security_binder_transaction(struct task_struct *from,
426 struct task_struct *to)
431 static inline int security_binder_transfer_binder(struct task_struct *from,
432 struct task_struct *to)
437 static inline int security_binder_transfer_file(struct task_struct *from,
438 struct task_struct *to,
444 static inline int security_ptrace_access_check(struct task_struct *child,
447 return cap_ptrace_access_check(child, mode);
450 static inline int security_ptrace_traceme(struct task_struct *parent)
452 return cap_ptrace_traceme(parent);
455 static inline int security_capget(struct task_struct *target,
456 kernel_cap_t *effective,
457 kernel_cap_t *inheritable,
458 kernel_cap_t *permitted)
460 return cap_capget(target, effective, inheritable, permitted);
463 static inline int security_capset(struct cred *new,
464 const struct cred *old,
465 const kernel_cap_t *effective,
466 const kernel_cap_t *inheritable,
467 const kernel_cap_t *permitted)
469 return cap_capset(new, old, effective, inheritable, permitted);
472 static inline int security_capable(const struct cred *cred,
473 struct user_namespace *ns, int cap)
475 return cap_capable(cred, ns, cap, SECURITY_CAP_AUDIT);
478 static inline int security_capable_noaudit(const struct cred *cred,
479 struct user_namespace *ns, int cap) {
480 return cap_capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
483 static inline int security_quotactl(int cmds, int type, int id,
484 struct super_block *sb)
489 static inline int security_quota_on(struct dentry *dentry)
494 static inline int security_syslog(int type)
499 static inline int security_settime64(const struct timespec64 *ts,
500 const struct timezone *tz)
502 return cap_settime(ts, tz);
505 static inline int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
507 return __vm_enough_memory(mm, pages, cap_vm_enough_memory(mm, pages));
510 static inline int security_bprm_set_creds(struct linux_binprm *bprm)
512 return cap_bprm_set_creds(bprm);
515 static inline int security_bprm_check(struct linux_binprm *bprm)
520 static inline void security_bprm_committing_creds(struct linux_binprm *bprm)
524 static inline void security_bprm_committed_creds(struct linux_binprm *bprm)
528 static inline int security_sb_alloc(struct super_block *sb)
533 static inline void security_sb_free(struct super_block *sb)
536 static inline int security_sb_copy_data(char *orig, char *copy)
541 static inline int security_sb_remount(struct super_block *sb, void *data)
546 static inline int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
551 static inline int security_sb_show_options(struct seq_file *m,
552 struct super_block *sb)
557 static inline int security_sb_statfs(struct dentry *dentry)
562 static inline int security_sb_mount(const char *dev_name, const struct path *path,
563 const char *type, unsigned long flags,
569 static inline int security_sb_umount(struct vfsmount *mnt, int flags)
574 static inline int security_sb_pivotroot(const struct path *old_path,
575 const struct path *new_path)
580 static inline int security_sb_set_mnt_opts(struct super_block *sb,
581 struct security_mnt_opts *opts,
582 unsigned long kern_flags,
583 unsigned long *set_kern_flags)
588 static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
589 struct super_block *newsb,
590 unsigned long kern_flags,
591 unsigned long *set_kern_flags)
596 static inline int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
601 static inline int security_inode_alloc(struct inode *inode)
606 static inline void security_inode_free(struct inode *inode)
609 static inline int security_dentry_init_security(struct dentry *dentry,
611 const struct qstr *name,
618 static inline int security_dentry_create_files_as(struct dentry *dentry,
619 int mode, struct qstr *name,
620 const struct cred *old,
627 static inline int security_inode_init_security(struct inode *inode,
629 const struct qstr *qstr,
630 const initxattrs xattrs,
636 static inline int security_old_inode_init_security(struct inode *inode,
638 const struct qstr *qstr,
640 void **value, size_t *len)
645 static inline int security_inode_create(struct inode *dir,
646 struct dentry *dentry,
652 static inline int security_inode_link(struct dentry *old_dentry,
654 struct dentry *new_dentry)
659 static inline int security_inode_unlink(struct inode *dir,
660 struct dentry *dentry)
665 static inline int security_inode_symlink(struct inode *dir,
666 struct dentry *dentry,
667 const char *old_name)
672 static inline int security_inode_mkdir(struct inode *dir,
673 struct dentry *dentry,
679 static inline int security_inode_rmdir(struct inode *dir,
680 struct dentry *dentry)
685 static inline int security_inode_mknod(struct inode *dir,
686 struct dentry *dentry,
692 static inline int security_inode_rename(struct inode *old_dir,
693 struct dentry *old_dentry,
694 struct inode *new_dir,
695 struct dentry *new_dentry,
701 static inline int security_inode_readlink(struct dentry *dentry)
706 static inline int security_inode_follow_link(struct dentry *dentry,
713 static inline int security_inode_permission(struct inode *inode, int mask)
718 static inline int security_inode_setattr(struct dentry *dentry,
724 static inline int security_inode_getattr(const struct path *path)
729 static inline int security_inode_setxattr(struct dentry *dentry,
730 const char *name, const void *value, size_t size, int flags)
732 return cap_inode_setxattr(dentry, name, value, size, flags);
735 static inline void security_inode_post_setxattr(struct dentry *dentry,
736 const char *name, const void *value, size_t size, int flags)
739 static inline int security_inode_getxattr(struct dentry *dentry,
745 static inline int security_inode_listxattr(struct dentry *dentry)
750 static inline int security_inode_removexattr(struct dentry *dentry,
753 return cap_inode_removexattr(dentry, name);
756 static inline int security_inode_need_killpriv(struct dentry *dentry)
758 return cap_inode_need_killpriv(dentry);
761 static inline int security_inode_killpriv(struct dentry *dentry)
763 return cap_inode_killpriv(dentry);
766 static inline int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
771 static inline int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
776 static inline int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
781 static inline void security_inode_getsecid(struct inode *inode, u32 *secid)
786 static inline int security_inode_copy_up(struct dentry *src, struct cred **new)
791 static inline int security_inode_copy_up_xattr(const char *name)
796 static inline int security_file_permission(struct file *file, int mask)
801 static inline int security_file_alloc(struct file *file)
806 static inline void security_file_free(struct file *file)
809 static inline int security_file_ioctl(struct file *file, unsigned int cmd,
815 static inline int security_mmap_file(struct file *file, unsigned long prot,
821 static inline int security_mmap_addr(unsigned long addr)
823 return cap_mmap_addr(addr);
826 static inline int security_file_mprotect(struct vm_area_struct *vma,
827 unsigned long reqprot,
833 static inline int security_file_lock(struct file *file, unsigned int cmd)
838 static inline int security_file_fcntl(struct file *file, unsigned int cmd,
844 static inline void security_file_set_fowner(struct file *file)
849 static inline int security_file_send_sigiotask(struct task_struct *tsk,
850 struct fown_struct *fown,
856 static inline int security_file_receive(struct file *file)
861 static inline int security_file_open(struct file *file,
862 const struct cred *cred)
867 static inline int security_task_alloc(struct task_struct *task,
868 unsigned long clone_flags)
873 static inline void security_task_free(struct task_struct *task)
876 static inline int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
881 static inline void security_cred_free(struct cred *cred)
884 static inline int security_prepare_creds(struct cred *new,
885 const struct cred *old,
891 static inline void security_transfer_creds(struct cred *new,
892 const struct cred *old)
896 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
901 static inline int security_kernel_create_files_as(struct cred *cred,
907 static inline int security_kernel_module_request(char *kmod_name)
912 static inline int security_kernel_read_file(struct file *file,
913 enum kernel_read_file_id id)
918 static inline int security_kernel_post_read_file(struct file *file,
919 char *buf, loff_t size,
920 enum kernel_read_file_id id)
925 static inline int security_task_fix_setuid(struct cred *new,
926 const struct cred *old,
929 return cap_task_fix_setuid(new, old, flags);
932 static inline int security_task_setpgid(struct task_struct *p, pid_t pgid)
937 static inline int security_task_getpgid(struct task_struct *p)
942 static inline int security_task_getsid(struct task_struct *p)
947 static inline void security_task_getsecid(struct task_struct *p, u32 *secid)
952 static inline int security_task_setnice(struct task_struct *p, int nice)
954 return cap_task_setnice(p, nice);
957 static inline int security_task_setioprio(struct task_struct *p, int ioprio)
959 return cap_task_setioprio(p, ioprio);
962 static inline int security_task_getioprio(struct task_struct *p)
967 static inline int security_task_prlimit(const struct cred *cred,
968 const struct cred *tcred,
974 static inline int security_task_setrlimit(struct task_struct *p,
975 unsigned int resource,
976 struct rlimit *new_rlim)
981 static inline int security_task_setscheduler(struct task_struct *p)
983 return cap_task_setscheduler(p);
986 static inline int security_task_getscheduler(struct task_struct *p)
991 static inline int security_task_movememory(struct task_struct *p)
996 static inline int security_task_kill(struct task_struct *p,
997 struct siginfo *info, int sig,
998 const struct cred *cred)
1003 static inline int security_task_prctl(int option, unsigned long arg2,
1008 return cap_task_prctl(option, arg2, arg3, arg4, arg5);
1011 static inline void security_task_to_inode(struct task_struct *p, struct inode *inode)
1014 static inline int security_ipc_permission(struct kern_ipc_perm *ipcp,
1020 static inline void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1025 static inline int security_msg_msg_alloc(struct msg_msg *msg)
1030 static inline void security_msg_msg_free(struct msg_msg *msg)
1033 static inline int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1038 static inline void security_msg_queue_free(struct kern_ipc_perm *msq)
1041 static inline int security_msg_queue_associate(struct kern_ipc_perm *msq,
1047 static inline int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1052 static inline int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1053 struct msg_msg *msg, int msqflg)
1058 static inline int security_msg_queue_msgrcv(struct kern_ipc_perm *msq,
1059 struct msg_msg *msg,
1060 struct task_struct *target,
1061 long type, int mode)
1066 static inline int security_shm_alloc(struct kern_ipc_perm *shp)
1071 static inline void security_shm_free(struct kern_ipc_perm *shp)
1074 static inline int security_shm_associate(struct kern_ipc_perm *shp,
1080 static inline int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1085 static inline int security_shm_shmat(struct kern_ipc_perm *shp,
1086 char __user *shmaddr, int shmflg)
1091 static inline int security_sem_alloc(struct kern_ipc_perm *sma)
1096 static inline void security_sem_free(struct kern_ipc_perm *sma)
1099 static inline int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1104 static inline int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1109 static inline int security_sem_semop(struct kern_ipc_perm *sma,
1110 struct sembuf *sops, unsigned nsops,
1116 static inline void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1119 static inline int security_getprocattr(struct task_struct *p, char *name, char **value)
1124 static inline int security_setprocattr(char *name, void *value, size_t size)
1129 static inline int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1134 static inline int security_ismaclabel(const char *name)
1139 static inline int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1144 static inline int security_secctx_to_secid(const char *secdata,
1151 static inline void security_release_secctx(char *secdata, u32 seclen)
1155 static inline void security_inode_invalidate_secctx(struct inode *inode)
1159 static inline int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1163 static inline int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1167 static inline int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1171 #endif /* CONFIG_SECURITY */
1173 #ifdef CONFIG_SECURITY_NETWORK
1175 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk);
1176 int security_unix_may_send(struct socket *sock, struct socket *other);
1177 int security_socket_create(int family, int type, int protocol, int kern);
1178 int security_socket_post_create(struct socket *sock, int family,
1179 int type, int protocol, int kern);
1180 int security_socket_socketpair(struct socket *socka, struct socket *sockb);
1181 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen);
1182 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen);
1183 int security_socket_listen(struct socket *sock, int backlog);
1184 int security_socket_accept(struct socket *sock, struct socket *newsock);
1185 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size);
1186 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1187 int size, int flags);
1188 int security_socket_getsockname(struct socket *sock);
1189 int security_socket_getpeername(struct socket *sock);
1190 int security_socket_getsockopt(struct socket *sock, int level, int optname);
1191 int security_socket_setsockopt(struct socket *sock, int level, int optname);
1192 int security_socket_shutdown(struct socket *sock, int how);
1193 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb);
1194 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1195 int __user *optlen, unsigned len);
1196 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid);
1197 int security_sk_alloc(struct sock *sk, int family, gfp_t priority);
1198 void security_sk_free(struct sock *sk);
1199 void security_sk_clone(const struct sock *sk, struct sock *newsk);
1200 void security_sk_classify_flow(struct sock *sk, struct flowi *fl);
1201 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl);
1202 void security_sock_graft(struct sock*sk, struct socket *parent);
1203 int security_inet_conn_request(struct sock *sk,
1204 struct sk_buff *skb, struct request_sock *req);
1205 void security_inet_csk_clone(struct sock *newsk,
1206 const struct request_sock *req);
1207 void security_inet_conn_established(struct sock *sk,
1208 struct sk_buff *skb);
1209 int security_secmark_relabel_packet(u32 secid);
1210 void security_secmark_refcount_inc(void);
1211 void security_secmark_refcount_dec(void);
1212 int security_tun_dev_alloc_security(void **security);
1213 void security_tun_dev_free_security(void *security);
1214 int security_tun_dev_create(void);
1215 int security_tun_dev_attach_queue(void *security);
1216 int security_tun_dev_attach(struct sock *sk, void *security);
1217 int security_tun_dev_open(void *security);
1218 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
1219 int security_sctp_bind_connect(struct sock *sk, int optname,
1220 struct sockaddr *address, int addrlen);
1221 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1222 struct sock *newsk);
1224 #else /* CONFIG_SECURITY_NETWORK */
1225 static inline int security_unix_stream_connect(struct sock *sock,
1232 static inline int security_unix_may_send(struct socket *sock,
1233 struct socket *other)
1238 static inline int security_socket_create(int family, int type,
1239 int protocol, int kern)
1244 static inline int security_socket_post_create(struct socket *sock,
1247 int protocol, int kern)
1252 static inline int security_socket_socketpair(struct socket *socka,
1253 struct socket *sockb)
1258 static inline int security_socket_bind(struct socket *sock,
1259 struct sockaddr *address,
1265 static inline int security_socket_connect(struct socket *sock,
1266 struct sockaddr *address,
1272 static inline int security_socket_listen(struct socket *sock, int backlog)
1277 static inline int security_socket_accept(struct socket *sock,
1278 struct socket *newsock)
1283 static inline int security_socket_sendmsg(struct socket *sock,
1284 struct msghdr *msg, int size)
1289 static inline int security_socket_recvmsg(struct socket *sock,
1290 struct msghdr *msg, int size,
1296 static inline int security_socket_getsockname(struct socket *sock)
1301 static inline int security_socket_getpeername(struct socket *sock)
1306 static inline int security_socket_getsockopt(struct socket *sock,
1307 int level, int optname)
1312 static inline int security_socket_setsockopt(struct socket *sock,
1313 int level, int optname)
1318 static inline int security_socket_shutdown(struct socket *sock, int how)
1322 static inline int security_sock_rcv_skb(struct sock *sk,
1323 struct sk_buff *skb)
1328 static inline int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1329 int __user *optlen, unsigned len)
1331 return -ENOPROTOOPT;
1334 static inline int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1336 return -ENOPROTOOPT;
1339 static inline int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1344 static inline void security_sk_free(struct sock *sk)
1348 static inline void security_sk_clone(const struct sock *sk, struct sock *newsk)
1352 static inline void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1356 static inline void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1360 static inline void security_sock_graft(struct sock *sk, struct socket *parent)
1364 static inline int security_inet_conn_request(struct sock *sk,
1365 struct sk_buff *skb, struct request_sock *req)
1370 static inline void security_inet_csk_clone(struct sock *newsk,
1371 const struct request_sock *req)
1375 static inline void security_inet_conn_established(struct sock *sk,
1376 struct sk_buff *skb)
1380 static inline int security_secmark_relabel_packet(u32 secid)
1385 static inline void security_secmark_refcount_inc(void)
1389 static inline void security_secmark_refcount_dec(void)
1393 static inline int security_tun_dev_alloc_security(void **security)
1398 static inline void security_tun_dev_free_security(void *security)
1402 static inline int security_tun_dev_create(void)
1407 static inline int security_tun_dev_attach_queue(void *security)
1412 static inline int security_tun_dev_attach(struct sock *sk, void *security)
1417 static inline int security_tun_dev_open(void *security)
1422 static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
1423 struct sk_buff *skb)
1428 static inline int security_sctp_bind_connect(struct sock *sk, int optname,
1429 struct sockaddr *address,
1435 static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
1440 #endif /* CONFIG_SECURITY_NETWORK */
1442 #ifdef CONFIG_SECURITY_INFINIBAND
1443 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey);
1444 int security_ib_endport_manage_subnet(void *sec, const char *name, u8 port_num);
1445 int security_ib_alloc_security(void **sec);
1446 void security_ib_free_security(void *sec);
1447 #else /* CONFIG_SECURITY_INFINIBAND */
1448 static inline int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1453 static inline int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1458 static inline int security_ib_alloc_security(void **sec)
1463 static inline void security_ib_free_security(void *sec)
1466 #endif /* CONFIG_SECURITY_INFINIBAND */
1468 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1470 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1471 struct xfrm_user_sec_ctx *sec_ctx, gfp_t gfp);
1472 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctxp);
1473 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
1474 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
1475 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx);
1476 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1477 struct xfrm_sec_ctx *polsec, u32 secid);
1478 int security_xfrm_state_delete(struct xfrm_state *x);
1479 void security_xfrm_state_free(struct xfrm_state *x);
1480 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
1481 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1482 struct xfrm_policy *xp,
1483 const struct flowi *fl);
1484 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid);
1485 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl);
1487 #else /* CONFIG_SECURITY_NETWORK_XFRM */
1489 static inline int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1490 struct xfrm_user_sec_ctx *sec_ctx,
1496 static inline int security_xfrm_policy_clone(struct xfrm_sec_ctx *old, struct xfrm_sec_ctx **new_ctxp)
1501 static inline void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1505 static inline int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1510 static inline int security_xfrm_state_alloc(struct xfrm_state *x,
1511 struct xfrm_user_sec_ctx *sec_ctx)
1516 static inline int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1517 struct xfrm_sec_ctx *polsec, u32 secid)
1522 static inline void security_xfrm_state_free(struct xfrm_state *x)
1526 static inline int security_xfrm_state_delete(struct xfrm_state *x)
1531 static inline int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1536 static inline int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1537 struct xfrm_policy *xp, const struct flowi *fl)
1542 static inline int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1547 static inline void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1551 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1553 #ifdef CONFIG_SECURITY_PATH
1554 int security_path_unlink(const struct path *dir, struct dentry *dentry);
1555 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode);
1556 int security_path_rmdir(const struct path *dir, struct dentry *dentry);
1557 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
1559 int security_path_truncate(const struct path *path);
1560 int security_path_symlink(const struct path *dir, struct dentry *dentry,
1561 const char *old_name);
1562 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
1563 struct dentry *new_dentry);
1564 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
1565 const struct path *new_dir, struct dentry *new_dentry,
1566 unsigned int flags);
1567 int security_path_chmod(const struct path *path, umode_t mode);
1568 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
1569 int security_path_chroot(const struct path *path);
1570 #else /* CONFIG_SECURITY_PATH */
1571 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
1576 static inline int security_path_mkdir(const struct path *dir, struct dentry *dentry,
1582 static inline int security_path_rmdir(const struct path *dir, struct dentry *dentry)
1587 static inline int security_path_mknod(const struct path *dir, struct dentry *dentry,
1588 umode_t mode, unsigned int dev)
1593 static inline int security_path_truncate(const struct path *path)
1598 static inline int security_path_symlink(const struct path *dir, struct dentry *dentry,
1599 const char *old_name)
1604 static inline int security_path_link(struct dentry *old_dentry,
1605 const struct path *new_dir,
1606 struct dentry *new_dentry)
1611 static inline int security_path_rename(const struct path *old_dir,
1612 struct dentry *old_dentry,
1613 const struct path *new_dir,
1614 struct dentry *new_dentry,
1620 static inline int security_path_chmod(const struct path *path, umode_t mode)
1625 static inline int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
1630 static inline int security_path_chroot(const struct path *path)
1634 #endif /* CONFIG_SECURITY_PATH */
1637 #ifdef CONFIG_SECURITY
1639 int security_key_alloc(struct key *key, const struct cred *cred, unsigned long flags);
1640 void security_key_free(struct key *key);
1641 int security_key_permission(key_ref_t key_ref,
1642 const struct cred *cred, unsigned perm);
1643 int security_key_getsecurity(struct key *key, char **_buffer);
1647 static inline int security_key_alloc(struct key *key,
1648 const struct cred *cred,
1649 unsigned long flags)
1654 static inline void security_key_free(struct key *key)
1658 static inline int security_key_permission(key_ref_t key_ref,
1659 const struct cred *cred,
1665 static inline int security_key_getsecurity(struct key *key, char **_buffer)
1672 #endif /* CONFIG_KEYS */
1675 #ifdef CONFIG_SECURITY
1676 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule);
1677 int security_audit_rule_known(struct audit_krule *krule);
1678 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1679 struct audit_context *actx);
1680 void security_audit_rule_free(void *lsmrule);
1684 static inline int security_audit_rule_init(u32 field, u32 op, char *rulestr,
1690 static inline int security_audit_rule_known(struct audit_krule *krule)
1695 static inline int security_audit_rule_match(u32 secid, u32 field, u32 op,
1696 void *lsmrule, struct audit_context *actx)
1701 static inline void security_audit_rule_free(void *lsmrule)
1704 #endif /* CONFIG_SECURITY */
1705 #endif /* CONFIG_AUDIT */
1707 #ifdef CONFIG_SECURITYFS
1709 extern struct dentry *securityfs_create_file(const char *name, umode_t mode,
1710 struct dentry *parent, void *data,
1711 const struct file_operations *fops);
1712 extern struct dentry *securityfs_create_dir(const char *name, struct dentry *parent);
1713 struct dentry *securityfs_create_symlink(const char *name,
1714 struct dentry *parent,
1716 const struct inode_operations *iops);
1717 extern void securityfs_remove(struct dentry *dentry);
1719 #else /* CONFIG_SECURITYFS */
1721 static inline struct dentry *securityfs_create_dir(const char *name,
1722 struct dentry *parent)
1724 return ERR_PTR(-ENODEV);
1727 static inline struct dentry *securityfs_create_file(const char *name,
1729 struct dentry *parent,
1731 const struct file_operations *fops)
1733 return ERR_PTR(-ENODEV);
1736 static inline struct dentry *securityfs_create_symlink(const char *name,
1737 struct dentry *parent,
1739 const struct inode_operations *iops)
1741 return ERR_PTR(-ENODEV);
1744 static inline void securityfs_remove(struct dentry *dentry)
1749 #ifdef CONFIG_BPF_SYSCALL
1753 struct bpf_prog_aux;
1754 #ifdef CONFIG_SECURITY
1755 extern int security_bpf(int cmd, union bpf_attr *attr, unsigned int size);
1756 extern int security_bpf_map(struct bpf_map *map, fmode_t fmode);
1757 extern int security_bpf_prog(struct bpf_prog *prog);
1758 extern int security_bpf_map_alloc(struct bpf_map *map);
1759 extern void security_bpf_map_free(struct bpf_map *map);
1760 extern int security_bpf_prog_alloc(struct bpf_prog_aux *aux);
1761 extern void security_bpf_prog_free(struct bpf_prog_aux *aux);
1763 static inline int security_bpf(int cmd, union bpf_attr *attr,
1769 static inline int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1774 static inline int security_bpf_prog(struct bpf_prog *prog)
1779 static inline int security_bpf_map_alloc(struct bpf_map *map)
1784 static inline void security_bpf_map_free(struct bpf_map *map)
1787 static inline int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1792 static inline void security_bpf_prog_free(struct bpf_prog_aux *aux)
1794 #endif /* CONFIG_SECURITY */
1795 #endif /* CONFIG_BPF_SYSCALL */
1797 #ifdef CONFIG_SECURITY
1799 static inline char *alloc_secdata(void)
1801 return (char *)get_zeroed_page(GFP_KERNEL);
1804 static inline void free_secdata(void *secdata)
1806 free_page((unsigned long)secdata);
1811 static inline char *alloc_secdata(void)
1816 static inline void free_secdata(void *secdata)
1818 #endif /* CONFIG_SECURITY */
1820 #endif /* ! __LINUX_SECURITY_H */