/* Compare two open file descriptors to see if they refer to the same file.
- Copyright (C) 1991 Free Software Foundation, Inc.
+ Copyright (C) 1991-2017 Free Software Foundation, Inc.
This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
You should have received a copy of the GNU Library General Public
License along with libiberty; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+Boston, MA 02110-1301, USA. */
/*
-NAME
+@deftypefn Extension int fdmatch (int @var{fd1}, int @var{fd2})
- fdmatch -- see if two file descriptors refer to same file
+Check to see if two open file descriptors refer to the same file.
+This is useful, for example, when we have an open file descriptor for
+an unnamed file, and the name of a file that we believe to correspond
+to that fd. This can happen when we are exec'd with an already open
+file (@code{stdout} for example) or from the SVR4 @file{/proc} calls
+that return open file descriptors for mapped address spaces. All we
+have to do is open the file by name and check the two file descriptors
+for a match, which is done by comparing major and minor device numbers
+and inode numbers.
-SYNOPSIS
-
- int fdmatch (int fd1, int fd2)
-
-DESCRIPTION
-
- Check to see if two open file descriptors refer to the same file.
- This is useful, for example, when we have an open file descriptor
- for an unnamed file, and the name of a file that we believe to
- correspond to that fd. This can happen when we are exec'd with
- an already open file (stdout for example) or from the SVR4 /proc
- calls that return open file descriptors for mapped address spaces.
- All we have to do is open the file by name and check the two file
- descriptors for a match, which is done by comparing major&minor
- device numbers and inode numbers.
+@end deftypefn
BUGS
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
#include "ansidecl.h"
#include "libiberty.h"
#include <sys/types.h>
#include <sys/stat.h>
-int fdmatch (fd1, fd2)
- int fd1;
- int fd2;
+int fdmatch (int fd1, int fd2)
{
struct stat sbuf1;
struct stat sbuf2;