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Yaakov Selkowitz 9087163804 ansification: remove _DEFUN
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
2018-01-17 11:47:26 -06:00

22 lines
302 B
C

/* isatty.c */
/* Dumb implementation so programs will at least run. */
#include <sys/stat.h>
#include <errno.h>
int
_isatty (int fd)
{
struct stat buf;
if (fstat (fd, &buf) < 0) {
errno = EBADF;
return 0;
}
if (S_ISCHR (buf.st_mode))
return 1;
errno = ENOTTY;
return 0;
}