Mail Archives: cygwin/2002/07/25/17:04:28
On Thu, Jul 25, 2002 at 04:38:32PM -0400, Sam Steingold wrote:
>To check that stdin and stdout are the same TTYs,
>I use the following code on UNIX (all flavors)
>
>#define stdin_handle 0
>#define stdout_handle 1
>
> struct stat stdin_stat;
> struct stat stdout_stat;
> if ((fstat(stdin_handle,&stdin_stat) >= 0) &&
> (fstat(stdout_handle,&stdout_stat) >= 0))
> if ((stdin_stat.st_dev == stdout_stat.st_dev) &&
> (stdin_stat.st_ino == stdout_stat.st_ino))
> same_tty = true;
>
>it works just fine on all UNIX flavors except for cygwin which has
>different inodes:
>
> stdin_stat.st_ino =3989447614
> stdout_stat.st_ino=3413797845
>
>what's wrong with cygwin?
>or maybe my method is incorrect?
>so how do I check that 0 and 1 are the same tty?
On Cygwin stdin is usually CONIN$ and stdout is usually CONOUT$ .
So, since inodes are based on filenames, they would be different
in this case.
Sorry.
cgf
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