[linux-2.6-block.git] / include / linux / seccomp.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SECCOMP_H
#define _LINUX_SECCOMP_H

#include <uapi/linux/seccomp.h>
#include <linux/seccomp_types.h>

#define SECCOMP_FILTER_FLAG_MASK	(SECCOMP_FILTER_FLAG_TSYNC | \
					 SECCOMP_FILTER_FLAG_LOG | \
					 SECCOMP_FILTER_FLAG_SPEC_ALLOW | \
					 SECCOMP_FILTER_FLAG_NEW_LISTENER | \
					 SECCOMP_FILTER_FLAG_TSYNC_ESRCH | \
					 SECCOMP_FILTER_FLAG_WAIT_KILLABLE_RECV)

/* sizeof() the first published struct seccomp_notif_addfd */
#define SECCOMP_NOTIFY_ADDFD_SIZE_VER0 24
#define SECCOMP_NOTIFY_ADDFD_SIZE_LATEST SECCOMP_NOTIFY_ADDFD_SIZE_VER0

#ifdef CONFIG_SECCOMP

#include <linux/thread_info.h>
#include <linux/atomic.h>
#include <asm/seccomp.h>

#ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER
extern int __secure_computing(const struct seccomp_data *sd);
static inline int secure_computing(void)
{
	if (unlikely(test_syscall_work(SECCOMP)))
		return  __secure_computing(NULL);
	return 0;
}
#else
extern void secure_computing_strict(int this_syscall);
#endif

extern long prctl_get_seccomp(void);
extern long prctl_set_seccomp(unsigned long, void __user *);

static inline int seccomp_mode(struct seccomp *s)
{
	return s->mode;
}

#else /* CONFIG_SECCOMP */

#include <linux/errno.h>

struct seccomp_data;

#ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER
static inline int secure_computing(void) { return 0; }
static inline int __secure_computing(const struct seccomp_data *sd) { return 0; }
#else
static inline void secure_computing_strict(int this_syscall) { return; }
#endif

static inline long prctl_get_seccomp(void)
{
	return -EINVAL;
}

static inline long prctl_set_seccomp(unsigned long arg2, char __user *arg3)
{
	return -EINVAL;
}

static inline int seccomp_mode(struct seccomp *s)
{
	return SECCOMP_MODE_DISABLED;
}
#endif /* CONFIG_SECCOMP */

#ifdef CONFIG_SECCOMP_FILTER
extern void seccomp_filter_release(struct task_struct *tsk);
extern void get_seccomp_filter(struct task_struct *tsk);
#else  /* CONFIG_SECCOMP_FILTER */
static inline void seccomp_filter_release(struct task_struct *tsk)
{
	return;
}
static inline void get_seccomp_filter(struct task_struct *tsk)
{
	return;
}
#endif /* CONFIG_SECCOMP_FILTER */

#if defined(CONFIG_SECCOMP_FILTER) && defined(CONFIG_CHECKPOINT_RESTORE)
extern long seccomp_get_filter(struct task_struct *task,
			       unsigned long filter_off, void __user *data);
extern long seccomp_get_metadata(struct task_struct *task,
				 unsigned long filter_off, void __user *data);
#else
static inline long seccomp_get_filter(struct task_struct *task,
				      unsigned long n, void __user *data)
{
	return -EINVAL;
}
static inline long seccomp_get_metadata(struct task_struct *task,
					unsigned long filter_off,
					void __user *data)
{
	return -EINVAL;
}
#endif /* CONFIG_SECCOMP_FILTER && CONFIG_CHECKPOINT_RESTORE */

#ifdef CONFIG_SECCOMP_CACHE_DEBUG
struct seq_file;
struct pid_namespace;
struct pid;

int proc_pid_seccomp_cache(struct seq_file *m, struct pid_namespace *ns,
			   struct pid *pid, struct task_struct *task);
#endif
#endif /* _LINUX_SECCOMP_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef _LINUX_SECCOMP_H
	3	#define _LINUX_SECCOMP_H
	4
607ca46e	5	#include <uapi/linux/seccomp.h>
a6e1420c	6	#include <linux/seccomp_types.h>
e2cfabdf	7
6a21cc50 TA	8	#define SECCOMP_FILTER_FLAG_MASK (SECCOMP_FILTER_FLAG_TSYNC \| \
	9	SECCOMP_FILTER_FLAG_LOG \| \
	10	SECCOMP_FILTER_FLAG_SPEC_ALLOW \| \
51891498	11	SECCOMP_FILTER_FLAG_NEW_LISTENER \| \
c2aa2dfe SD	12	SECCOMP_FILTER_FLAG_TSYNC_ESRCH \| \
c2aa2dfe SD	13	SECCOMP_FILTER_FLAG_WAIT_KILLABLE_RECV)
c2e1f2e3	14
7cf97b12 SD	15	/* sizeof() the first published struct seccomp_notif_addfd */
	16	#define SECCOMP_NOTIFY_ADDFD_SIZE_VER0 24
	17	#define SECCOMP_NOTIFY_ADDFD_SIZE_LATEST SECCOMP_NOTIFY_ADDFD_SIZE_VER0
	18
1da177e4 LT	19	#ifdef CONFIG_SECCOMP
1da177e4 LT	20
1da177e4	21	#include <linux/thread_info.h>
c818c03b	22	#include <linux/atomic.h>
1da177e4 LT	23	#include <asm/seccomp.h>
1da177e4 LT	24
a4412fc9	25	#ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER
2f275de5	26	extern int __secure_computing(const struct seccomp_data *sd);
fefad9ef	27	static inline int secure_computing(void)
1da177e4	28	{
23d67a54	29	if (unlikely(test_syscall_work(SECCOMP)))
fefad9ef	30	return __secure_computing(NULL);
acf3b2c7	31	return 0;
1da177e4	32	}
a4412fc9 AL	33	#else
	34	extern void secure_computing_strict(int this_syscall);
	35	#endif
e4da89d0	36
1d9d02fe	37	extern long prctl_get_seccomp(void);
a5662e4d	38	extern long prctl_set_seccomp(unsigned long, void __user *);
1d9d02fe	39
932ecebb	40	static inline int seccomp_mode(struct seccomp *s)
5cec93c2 AL	41	{
	42	return s->mode;
	43	}
	44
1da177e4 LT	45	#else /* CONFIG_SECCOMP */
1da177e4 LT	46
42a17ad2 RB	47	#include <linux/errno.h>
42a17ad2 RB	48
3135f5b7	49	struct seccomp_data;
1da177e4	50
a4412fc9	51	#ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER
fefad9ef	52	static inline int secure_computing(void) { return 0; }
3135f5b7	53	static inline int __secure_computing(const struct seccomp_data *sd) { return 0; }
a4412fc9	54	#else
e4da89d0	55	static inline void secure_computing_strict(int this_syscall) { return; }
a4412fc9	56	#endif
1da177e4	57
1d9d02fe AA	58	static inline long prctl_get_seccomp(void)
	59	{
	60	return -EINVAL;
	61	}
	62
e2cfabdf	63	static inline long prctl_set_seccomp(unsigned long arg2, char __user *arg3)
1d9d02fe AA	64	{
	65	return -EINVAL;
	66	}
	67
932ecebb	68	static inline int seccomp_mode(struct seccomp *s)
5cec93c2	69	{
221272f9	70	return SECCOMP_MODE_DISABLED;
5cec93c2	71	}
1da177e4 LT	72	#endif /* CONFIG_SECCOMP */
1da177e4 LT	73
e2cfabdf	74	#ifdef CONFIG_SECCOMP_FILTER
3a15fb6e	75	extern void seccomp_filter_release(struct task_struct *tsk);
e2cfabdf	76	extern void get_seccomp_filter(struct task_struct *tsk);
e2cfabdf	77	#else /* CONFIG_SECCOMP_FILTER */
3a15fb6e	78	static inline void seccomp_filter_release(struct task_struct *tsk)
e2cfabdf WD	79	{
	80	return;
	81	}
	82	static inline void get_seccomp_filter(struct task_struct *tsk)
	83	{
	84	return;
	85	}
	86	#endif /* CONFIG_SECCOMP_FILTER */
f8e529ed TA	87
	88	#if defined(CONFIG_SECCOMP_FILTER) && defined(CONFIG_CHECKPOINT_RESTORE)
	89	extern long seccomp_get_filter(struct task_struct *task,
	90	unsigned long filter_off, void __user *data);
26500475 TA	91	extern long seccomp_get_metadata(struct task_struct *task,
26500475 TA	92	unsigned long filter_off, void __user *data);
f8e529ed TA	93	#else
	94	static inline long seccomp_get_filter(struct task_struct *task,
	95	unsigned long n, void __user *data)
	96	{
	97	return -EINVAL;
	98	}
26500475 TA	99	static inline long seccomp_get_metadata(struct task_struct *task,
	100	unsigned long filter_off,
	101	void __user *data)
	102	{
	103	return -EINVAL;
	104	}
f8e529ed	105	#endif /* CONFIG_SECCOMP_FILTER && CONFIG_CHECKPOINT_RESTORE */
0d8315dd YZ	106
	107	#ifdef CONFIG_SECCOMP_CACHE_DEBUG
	108	struct seq_file;
6d5e9d63 KO	109	struct pid_namespace;
6d5e9d63 KO	110	struct pid;
0d8315dd YZ	111
	112	int proc_pid_seccomp_cache(struct seq_file m, struct pid_namespace ns,
	113	struct pid pid, struct task_struct task);
	114	#endif
1da177e4	115	#endif /* _LINUX_SECCOMP_H */