dirfd prototype

[Eric Blake]

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According to POSIX, dirfd does not take a const argument.  I'm applying this:

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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>From c3815b3682210097f172d77ac132dd439568e315 Mon Sep 17 00:00:00 2001
From: Eric Blake <address@hidden>
Date: Sat, 19 Dec 2009 11:49:32 -0700
Subject: [PATCH] dirfd: fix prototype

Fix prototype to match POSIX.

* lib/dirent.in.h (dirfd): Argument is not const, per POSIX.
* lib/dirfd.c (dirfd): Likewise.

Signed-off-by: Eric Blake <address@hidden>
---
 ChangeLog       |    4 ++++
 lib/dirent.in.h |    2 +-
 lib/dirfd.c     |    2 +-
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index c3f3cb7..1aa2977 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2009-12-19  Eric Blake  <address@hidden>

+       dirfd: fix prototype
+       * lib/dirent.in.h (dirfd): Argument is not const, per POSIX.
+       * lib/dirfd.c (dirfd): Likewise.
+
        canonicalize: reduce memory usage
        * lib/canonicalize.c (canonicalize_filename_mode): Trim the
        allocation to size.
diff --git a/lib/dirent.in.h b/lib/dirent.in.h
index ef11c47..f79ce0b 100644
--- a/lib/dirent.in.h
+++ b/lib/dirent.in.h
@@ -45,7 +45,7 @@ extern int closedir (DIR *) _GL_ARG_NONNULL ((1));
 # if address@hidden@ && !defined dirfd
 /* Return the file descriptor associated with the given directory stream,
    or -1 if none exists.  */
-extern int dirfd (DIR const *dir) _GL_ARG_NONNULL ((1));
+extern int dirfd (DIR *dir) _GL_ARG_NONNULL ((1));
 # endif
 #elif defined GNULIB_POSIXCHECK
 # undef dirfd
diff --git a/lib/dirfd.c b/lib/dirfd.c
index 81993c5..ea8ec4e 100644
--- a/lib/dirfd.c
+++ b/lib/dirfd.c
@@ -23,7 +23,7 @@
 #include <errno.h>

 int
-dirfd (DIR const *dir_p)
+dirfd (DIR *dir_p)
 {
   int fd = DIR_TO_FD (dir_p);
   if (fd == -1)
-- 
1.6.5.rc1