#ifndef _CH_PROXY_SENFD
#define _CH_PROXY_SENFD

#include <stddef.h> /* size_t */
#include <sys/types.h> /* ssize_t */
#include <sys/uio.h> /* iovec */


/* send_fd(chanFd, fd, *iov)
 *
 * chanFd: fd to sendmsg over;
 * fd: fd to send;
 * iov: extra data to send or NULL;
 *
 * returns: result of sendmsg,
 * i.e. the number of bytes sent */
ssize_t send_fd(int chanFd, int fd, const struct iovec *);

/* recv_fd(chanFd, flags)
 *
 * chanFd: fd to recvmsg from;
 * flags: recvmsg flags e.g. 0, or MSG_CMSG_CLOEXEC?
 *
 * returns: the received fd or -1 */
int recv_fd(int chanFd, int flags);

#endif /* _CH_PROXY_SENFD */