X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fxgetcwd.c;h=b8546bf16548d12799be4bd46af6af417d662ab8;hb=39cedf6f427350ac47118d231c05a7b73b609f89;hp=7ab2204682587acdc16722c412912c88c7dbcef0;hpb=16157cc455337732a6afe4785a75f6344e49a43f;p=gnulib.git

diff --git a/lib/xgetcwd.c b/lib/xgetcwd.c
index 7ab220468..b8546bf16 100644
--- a/lib/xgetcwd.c
+++ b/lib/xgetcwd.c
@@ -1,10 +1,12 @@
 /* xgetcwd.c -- return current directory with unlimited length
-   Copyright (C) 1992, 1996 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   Copyright (C) 2001, 2003-2004, 2006-2007, 2009-2012 Free Software
+   Foundation, Inc.
+
+   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
@@ -12,68 +14,28 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
-
-/* Written by David MacKenzie <djm@gnu.ai.mit.edu>.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+/* Written by Jim Meyering.  */
 
-#include <stdio.h>
-#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
+#include <config.h>
 
-#include <sys/types.h>
-#include "pathmax.h"
+#include "xgetcwd.h"
 
-#if HAVE_GETCWD
-char *getcwd ();
-#else
-char *getwd ();
-# define getcwd(Buf, Max) getwd (Buf)
-#endif
-
-/* Amount to increase buffer size by in each try. */
-#define PATH_INCR 32
+#include <errno.h>
+#include <unistd.h>
 
-char *xmalloc ();
-char *xrealloc ();
-void free ();
+#include "xalloc.h"
 
-/* Return the current directory, newly allocated, arbitrarily long.
-   Return NULL and set errno on error. */
+/* Return the current directory, newly allocated.
+   Upon an out-of-memory error, call xalloc_die.
+   Upon any other type of error, return NULL.  */
 
 char *
-xgetcwd ()
+xgetcwd (void)
 {
-  char *cwd;
-  char *ret;
-  unsigned path_max;
-
-  errno = 0;
-  path_max = (unsigned) PATH_MAX;
-  path_max += 2;		/* The getcwd docs say to do this. */
-
-  cwd = xmalloc (path_max);
-
-  errno = 0;
-  while ((ret = getcwd (cwd, path_max)) == NULL && errno == ERANGE)
-    {
-      path_max += PATH_INCR;
-      cwd = xrealloc (cwd, path_max);
-      errno = 0;
-    }
-
-  if (ret == NULL)
-    {
-      int save_errno = errno;
-      free (cwd);
-      errno = save_errno;
-      return NULL;
-    }
+  char *cwd = getcwd (NULL, 0);
+  if (! cwd && errno == ENOMEM)
+    xalloc_die ();
   return cwd;
 }