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#ifndef NETUTILS_UNIXFD_H
#define NETUTILS_UNIXFD_H
#include <linux/types.h>
#include <sys/socket.h>
#include <sys/types.h>
#define KERNEL_SCM_MAX_FD 253
/* Allow the caller to set expectations. */
#define UNIX_FDS_ACCEPT_EXACT ((__u32)(1 << 0)) /* default */
#define UNIX_FDS_ACCEPT_LESS ((__u32)(1 << 1))
#define UNIX_FDS_ACCEPT_MORE ((__u32)(1 << 2)) /* wipe any extra fds */
#define UNIX_FDS_ACCEPT_NONE ((__u32)(1 << 3))
#define UNIX_FDS_ACCEPT_MASK (UNIX_FDS_ACCEPT_EXACT | UNIX_FDS_ACCEPT_LESS | UNIX_FDS_ACCEPT_MORE | UNIX_FDS_ACCEPT_NONE)
/* Allow the callee to disappoint them. */
#define UNIX_FDS_RECEIVED_EXACT ((__u32)(1 << 16))
#define UNIX_FDS_RECEIVED_LESS ((__u32)(1 << 17))
#define UNIX_FDS_RECEIVED_MORE ((__u32)(1 << 18))
#define UNIX_FDS_RECEIVED_NONE ((__u32)(1 << 19))
struct unix_fds {
__u32 fd_count_max;
__u32 fd_count_ret;
__u32 flags;
__s32 fd[KERNEL_SCM_MAX_FD];
} __attribute__((aligned(8)));
extern int lxc_abstract_unix_send_fds(int fd, int *sendfds, int num_sendfds,
void *data, size_t size);
extern ssize_t lxc_abstract_unix_recv_fds_iov(int fd, struct unix_fds *ret_fds,
struct iovec *ret_iov,
size_t size_ret_iov);
extern ssize_t lxc_abstract_unix_recv_fds(int fd, struct unix_fds *ret_fds,
void *ret_data, size_t size_ret_data);
#endif // NETUTILS_UNIXFD_H
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