Retro68/gcc/newlib/libc/posix/_isatty.c
Wolfgang Thaller ec13cc9ce7 fix newlib
2018-12-29 09:59:36 +01:00

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;
}