[wasi-libc.git] / libc-top-half / musl / src / unistd / isatty.c

#include <unistd.h>
#include <errno.h>
#include <sys/ioctl.h>
#include "syscall.h"

int isatty(int fd)
{
	struct winsize wsz;
	unsigned long r = syscall(SYS_ioctl, fd, TIOCGWINSZ, &wsz);
	if (r == 0) return 1;
	if (errno != EBADF) errno = ENOTTY;
	return 0;
}
Commit	Line	Data
320054e8 DG	1	#include <unistd.h>
	2	#include <errno.h>
	3	#include <sys/ioctl.h>
	4	#include "syscall.h"
	5
	6	int isatty(int fd)
	7	{
	8	struct winsize wsz;
	9	unsigned long r = syscall(SYS_ioctl, fd, TIOCGWINSZ, &wsz);
	10	if (r == 0) return 1;
	11	if (errno != EBADF) errno = ENOTTY;
	12	return 0;
	13	}