ref: 2cb45ba7f64f83e48609b47218c8fb70cbaced5b
dir: /sys/src/libthread/ioclose.c/
#include <u.h>
#include <libc.h>
#include <thread.h>
#include "threadimpl.h"
static long
_ioclose(va_list *arg)
{
	int fd;
	fd = va_arg(*arg, int);
	return close(fd);
}
int
ioclose(Ioproc *io, int fd)
{
	return iocall(io, _ioclose, fd);
}