/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __NAMESPACE_H__

#define __NAMESPACE_H__ 1

#include <sched.h>

#include <sys/mount.h>

#include <unistd.h>

#include <sys/syscall.h>

#include <errno.h>

#ifndef NETNS_RUN_DIR

#define NETNS_RUN_DIR "/var/run/netns"

#endif

#ifndef NETNS_ETC_DIR

#define NETNS_ETC_DIR "/etc/netns"

#endif

#ifndef CLONE_NEWNET

#define CLONE_NEWNET 0x40000000	/* New network namespace (lo, device, names sockets, etc) */

#endif

#ifndef MNT_DETACH

#define MNT_DETACH	0x00000002	/* Just detach from the tree */

#endif /* MNT_DETACH */

/* sys/mount.h may be out too old to have these */

#ifndef MS_REC

#define MS_REC		16384

#endif

#ifndef MS_SLAVE

#define MS_SLAVE	(1 << 19)

#endif

#ifndef MS_SHARED

#define MS_SHARED	(1 << 20)

#endif

#ifndef HAVE_SETNS

static inline int setns(int fd, int nstype)

{

#ifdef __NR_setns

	return syscall(__NR_setns, fd, nstype);

#else

	errno = ENOSYS;

	return -1;

#endif

}

#endif /* HAVE_SETNS */

int netns_switch(char *netns);

int netns_get_fd(const char *netns);

int netns_foreach(int (*func)(char *nsname, void *arg), void *arg);

struct netns_func {

	int (*func)(char *nsname, void *arg);

	void *arg;

};

#endif /* __NAMESPACE_H__ */