gen/FreeBSD/isatty.c.patch

   1 --- isatty.c.orig       2009-11-07 14:51:38.000000000 -0800
   2 +++ isatty.c    2009-11-07 14:51:40.000000000 -0800
   3 @@ -35,14 +35,22 @@ __FBSDID("$FreeBSD: src/lib/libc/gen/isa
   4
   5  #include <termios.h>
   6  #include <unistd.h>
   7 +#include <sys/filio.h>
   8 +#include <sys/conf.h>
   9 +#include <sys/ioctl.h>
  10 +#include <errno.h>
  11
  12  int
  13  isatty(fd)
  14         int fd;
  15  {
  16 -       int retval;
  17 +       int retval, type;
  18         struct termios t;
  19
  20 -       retval = (tcgetattr(fd, &t) != -1);
  21 +       if(ioctl(fd, FIODTYPE, &type) != -1) {
  22 +           if((retval = (type == D_TTY)) == 0)
  23 +               errno = ENOTTY;
  24 +       } else
  25 +           retval = (tcgetattr(fd, &t) != -1);
  26         return(retval);
  27  }