2008-01-03 Jeff Johnston <jjohnstn@redhat.com>

        Make isatty syscall handling consistent with other newlib syscalls.

        * libc/include/_syslist.h: Add _isatty.
        * libc/include/reent.h: Add _isatty_r.
        * libc/include/sys/unistd.h: Add _isatty.
        * libc/posix/Makefile.am: Add new _isatty.c file.
        * libc/posix/Makefile.in: Regenerated.
        * libc/posix/_isatty.c: New file.
        * libc/posix/isatty.c: Changed to call _isatty().
        * libc/reent/Makefile.am: Add new isattyr.c file.
        * libc/reent/Makefile.in: Regenerated.
        * libc/reent/isattyr.c: New file.
        * libc/stdio/freopen.c: Changed to call _isatty_r().
        * libc/stdio/makebuf.c: Ditto.
        * libc/sys/a29khif/_isatty.S: Change isatty to _isatty.
        * libc/sys/arc/isatty.c: Ditto.
        * libc/sys/arm/syscalls.c: Ditto.
        * libc/sys/d10v/syscalls.c: Ditto.
        * libc/sys/h8300hms/syscalls.c: Ditto.
        * libc/sys/h8500hms/syscalls.c: Ditto.
        * libc/sys/linux/Makefile.am: Add new isatty.c file.
        * libc/sys/linux/Makefile.in: Regenerated.
        * libc/sys/linux/isatty.c: New file.
        * libc/syscalls/Makefile.am: Add new sysisatty.c file.
        * libc/syscalls/Makefile.in: Regenerated.
        * libc/syscalls/sysisatty.c: New file.

1 files changed, 3 insertions, 10 deletions

diff --git a/newlib/libc/posix/isatty.c b/newlib/libc/posix/isatty.c
index 2732ca2a0..afd5ec85e 100644
--- a/newlib/libc/posix/isatty.c
+++ b/newlib/libc/posix/isatty.c
@@ -1,17 +1,10 @@
 /* isatty.c */
 
-/* Dumb implementation so programs will at least run.  */
-
-#include <sys/stat.h>
+#include <unistd.h>
+#include <reent.h>
 
 int
 _DEFUN(isatty, (fd), int fd)
 {
-  struct stat buf;
-
-  if (fstat (fd, &buf) < 0)
-    return 0;
-  if (S_ISCHR (buf.st_mode))
-    return 1;
-  return 0;
+  return _isatty (fd);
 }