Fix bug in sparse file listing

[chaz/tar] / src / xheader.c

diff --git a/src/xheader.c b/src/xheader.c
index 57ace12adf6f7b28d2234ac8ac4ab8ec85f1169a..361f684751806c5482d44f9c1fa1ed1f397c6ac7 100644 (file)
--- a/src/xheader.c
+++ b/src/xheader.c
@@ -1,21 +1,22 @@
 /* POSIX extended headers for tar.
 
-   Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2012
-   Free Software Foundation, Inc.
+   Copyright (C) 2003-2007, 2009-2010, 2012-2014 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 3, or (at your option) any later
-   version.
+   This file is part of GNU tar.
 
-   This program is distributed in the hope that it will be useful, but
-   WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
-   Public License for more details.
+   GNU tar 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 3 of the License, or
+   (at your option) any later version.
 
-   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.,
-   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   GNU tar is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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, see <http://www.gnu.org/licenses/>.  */
 
 #include <system.h>
 
@@ -754,6 +755,16 @@ xheader_decode (struct tar_stat_info *st)
        continue;
     }
   run_override_list (keyword_override_list, st);
+
+  /* The archived (effective) file size is always set directly in tar header
+     field, possibly overridden by "size" extended header - in both cases,
+     result is now decoded in st->stat.st_size */
+  st->archive_file_size = st->stat.st_size;
+
+  /* The real file size (given by stat()) may be redefined for sparse
+     files in "GNU.sparse.realsize" extended header */
+  if (st->real_size_set)
+    st->stat.st_size = st->real_size;
 }
 
 static void
@@ -1359,7 +1370,10 @@ sparse_size_decoder (struct tar_stat_info *st,
 {
   uintmax_t u;
   if (decode_num (&u, arg, TYPE_MAXIMUM (off_t), keyword))
-    st->stat.st_size = u;
+    {
+      st->real_size_set = 1;
+      st->real_size = u;
+    }
 }
 
 static void