toolchain/gcc/newlib/libc/posix/isatty.c

   1 /* isatty.c */
   2
   3 /* Dumb implementation so programs will at least run.  */
   4
   5 #include <sys/stat.h>
   6
   7 int
   8 _DEFUN(isatty, (fd), int fd)
   9 {
  10   struct stat buf;
  11
  12   if (fstat (fd, &buf) < 0)
  13     return 0;
  14   if (S_ISCHR (buf.st_mode))
  15     return 1;
  16   return 0;
  17 }