X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fxgetcwd.c;h=26ea5da53d66e33907762a25b78df134da26372e;hb=a3a70ebafd7f2fdc069d43e8a26fc246dd7fe5bb;hp=6e775e74b26ffceb206981a1d6d8dc822dbe560f;hpb=d282959bf42afbdb856ec29cd1f0bc2883000f71;p=gnulib.git

diff --git a/lib/xgetcwd.c b/lib/xgetcwd.c
index 6e775e74b..26ea5da53 100644
--- a/lib/xgetcwd.c
+++ b/lib/xgetcwd.c
@@ -1,5 +1,6 @@
 /* xgetcwd.c -- return current directory with unlimited length
-   Copyright (C) 1992 Free Software Foundation, Inc.
+
+   Copyright (C) 2001, 2003, 2004, 2006, 2007 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
@@ -12,74 +13,29 @@
    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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
-/* Written by David MacKenzie, djm@gnu.ai.mit.edu. */
+/* Written by Jim Meyering.  */
 
-#ifdef HAVE_CONFIG_H
-#if defined (CONFIG_BROKETS)
-/* We use <config.h> instead of "config.h" so that a compilation
-   using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
-   (which it would do because it found this file in $srcdir).  */
 #include <config.h>
-#else
-#include "config.h"
-#endif
-#endif
-
-#include <stdio.h>
-#include <errno.h>
-#ifndef errno
-extern int errno;
-#endif
-#include <sys/types.h>
-#include "pathmax.h"
 
-#if !defined(_POSIX_VERSION) && !defined(HAVE_GETCWD)
-char *getwd ();
-#define getcwd(buf, max) getwd (buf)
-#else
-char *getcwd ();
-#endif
+#include "xgetcwd.h"
 
-/* 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;
 }