sha1: remove the result buffer alignment constraint

[gnulib.git] / lib / backupfile.c

diff --git a/lib/backupfile.c b/lib/backupfile.c
index 13c4715..1420edd 100644 (file)
--- a/lib/backupfile.c
+++ b/lib/backupfile.c
@@ -4,10 +4,10 @@
    1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software
    Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -15,16 +15,12 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; see the file COPYING.
-   If not, write to the Free Software Foundation,
-   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Written by Paul Eggert and David MacKenzie.
    Some algorithms adapted from GNU Emacs.  */
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
 #include "backupfile.h"
 
@@ -41,15 +37,10 @@
 
 #include <unistd.h>
 
-#if HAVE_DIRENT_H
-# include <dirent.h>
-# define NLENGTH(direct) strlen ((direct)->d_name)
-#else
-# define dirent direct
-# define NLENGTH(direct) ((size_t) (direct)->d_namlen)
-# include <ndir.h>
+#include <dirent.h>
+#ifndef _D_EXACT_NAMLEN
+# define _D_EXACT_NAMLEN(dp) strlen ((dp)->d_name)
 #endif
-
 #if D_INO_IN_DIRENT
 # define REAL_DIR_ENTRY(dp) ((dp)->d_ino != 0)
 #else
@@ -89,6 +80,11 @@
    of `digit' even when the host does not conform to POSIX.  */
 #define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
 
+/* The results of opendir() in this file are not used with dirfd and fchdir,
+   therefore save some unnecessary work in fchdir.c.  */
+#undef opendir
+#undef closedir
+
 /* The extension added to file names to produce a simple (as opposed
    to numbered) backup file name. */
 char const *simple_backup_suffix = "~";
@@ -211,7 +207,7 @@ numbered_backup (char **buffer, size_t buffer_size, size_t filelen)
       size_t versionlen;
       size_t new_buflen;
 
-      if (! REAL_DIR_ENTRY (dp) || NLENGTH (dp) < baselen + 4)
+      if (! REAL_DIR_ENTRY (dp) || _D_EXACT_NAMLEN (dp) < baselen + 4)
        continue;
 
       if (memcmp (buf + base_offset, dp->d_name, baselen + 2) != 0)