Relicense under GPLv3

[chaz/tar] / src / buffer.c

diff --git a/src/buffer.c b/src/buffer.c
index 2b53ec38d6d90d4c0ef1fed3e7373fe1b372a306..13e1c139048603bc2e6d5a339b83247754e3a705 100644 (file)
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -1,13 +1,13 @@
 /* Buffer management for tar.
 
    Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001,
-   2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+   2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
 
    Written by John Gilmore, on 1985-08-25.
 
    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
+   Free Software Foundation; either version 3, or (at your option) any later
    version.
 
    This program is distributed in the hope that it will be useful, but
@@ -121,6 +121,15 @@ static off_t save_totsize; /* total size of file we are writing, only
 static off_t save_sizeleft;    /* where we are in the file we are writing,
                                   only valid if save_name is nonzero */
 
+\f
+static struct tar_stat_info dummy;
+
+void
+buffer_write_global_xheader ()
+{
+  xheader_write_global (&dummy.xhdr);
+}
+
 void
 mv_begin (struct tar_stat_info *st)
 {
@@ -338,6 +347,9 @@ print_total_stats ()
       print_stats (stderr, _("Total bytes read"),
                   records_read * record_size);
       break;
+
+    default:
+      abort ();
     }
 }
 
@@ -433,16 +445,6 @@ _open_archive (enum access_mode wanted_access)
 {
   int backed_up_flag = 0;
 
-  if (index_file_name)
-    {
-      stdlis = freopen (index_file_name, "w", stdout);
-      if (! stdlis)
-       open_error (index_file_name);
-      close_stdout_set_file_name (index_file_name);
-    }
-  else
-    stdlis = to_stdout_option ? stderr : stdout;
-
   if (record_size == 0)
     FATAL_ERROR ((0, 0, _("Invalid value for record_size")));
 
@@ -482,7 +484,8 @@ _open_archive (enum access_mode wanted_access)
          break;
        }
 
-      if (wanted_access == ACCESS_WRITE
+      if (!index_file_name
+         && wanted_access == ACCESS_WRITE
          && strcmp (archive_name_array[0], "-") == 0)
        stdlis = stderr;
     }
@@ -510,14 +513,16 @@ _open_archive (enum access_mode wanted_access)
 
        case ACCESS_WRITE:
          archive = STDOUT_FILENO;
-         stdlis = stderr;
+         if (!index_file_name)
+           stdlis = stderr;
          break;
 
        case ACCESS_UPDATE:
          archive = STDIN_FILENO;
-         stdlis = stderr;
          write_archive_to_stdout = true;
          record_end = record_start; /* set up for 1st record = # 0 */
+         if (!index_file_name)
+           stdlis = stderr;
          break;
        }
     }
@@ -1033,7 +1038,8 @@ new_volume (enum access_mode mode)
   assign_string (&volume_label, NULL);
   assign_string (&continued_file_name, NULL);
   continued_file_size = continued_file_offset = 0;
-
+  current_block = record_start;
+  
   if (rmtclose (archive) != 0)
     close_warn (*archive_name_cursor);
 
@@ -1126,23 +1132,24 @@ try_new_volume ()
 {
   size_t status;
   union block *header;
-  struct tar_stat_info dummy;
-       
+  int access;
+  
   switch (subcommand_option)
     {
     case APPEND_SUBCOMMAND:
     case CAT_SUBCOMMAND:
     case UPDATE_SUBCOMMAND:
-      if (!new_volume (ACCESS_UPDATE))
-       return true;
+      access = ACCESS_UPDATE;
       break;
 
     default:
-      if (!new_volume (ACCESS_READ))
-       return true;
+      access = ACCESS_READ;
       break;
     }
 
+  if (!new_volume (access))
+    return true;
+  
   while ((status = rmtread (archive, record_start->buffer, record_size))
         == SAFE_READ_ERROR)
     archive_read_error ();
@@ -1296,7 +1303,7 @@ static void
 _write_volume_label (const char *str)
 {
   if (archive_format == POSIX_FORMAT)
-    xheader_store ("GNU.volume.label", NULL, str);
+    xheader_store ("GNU.volume.label", &dummy, str);
   else
     {
       union block *label = find_next_block ();
@@ -1413,9 +1420,9 @@ add_multi_volume_header (void)
   if (archive_format == POSIX_FORMAT)
     {
       off_t d = real_s_totsize - real_s_sizeleft;
-      xheader_store ("GNU.volume.filename", NULL, real_s_name);
-      xheader_store ("GNU.volume.size", NULL, &real_s_sizeleft);
-      xheader_store ("GNU.volume.offset", NULL, &d);
+      xheader_store ("GNU.volume.filename", &dummy, real_s_name);
+      xheader_store ("GNU.volume.size", &dummy, &real_s_sizeleft);
+      xheader_store ("GNU.volume.offset", &dummy, &d);
     }
   else
     gnu_add_multi_volume_header ();
@@ -1602,7 +1609,7 @@ _gnu_flush_write (size_t buffer_level)
   if (!new_volume (ACCESS_WRITE))
     return;
 
-  xheader_destroy (&extended_header);
+  tar_stat_destroy (&dummy);
 
   increase_volume_number ();
   prev_written += bytes_written;
@@ -1620,7 +1627,9 @@ _gnu_flush_write (size_t buffer_level)
   if (real_s_name)
     add_multi_volume_header ();
 
-  write_extended (true, NULL, find_next_block ());
+  write_extended (true, &dummy, find_next_block ());
+  tar_stat_destroy (&dummy);
+  
   if (real_s_name)
     add_chunk_header ();
   header = find_next_block ();