Optimize searches for directory structures by keeping a pointer to struct directory...

[chaz/tar] / src / compare.c

diff --git a/src/compare.c b/src/compare.c
index 2163a29421770af2b50918d4a0f22fdf802b4676..57732cccaa7fdadf51c872019252002ace7457e7 100644 (file)
--- a/src/compare.c
+++ b/src/compare.c
@@ -1,13 +1,13 @@
 /* Diff files from a tar archive.
 
    Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001,
 /* Diff files from a tar archive.
 
    Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001,

-   2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+   2003, 2004, 2005, 2006, 2007, 2009 Free Software Foundation, Inc.

 
    Written by John Gilmore, on 1987-04-30.
 
    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
 
    Written by John Gilmore, on 1987-04-30.
 
    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
    version.
 
    This program is distributed in the hope that it will be useful, but


@@ -366,11 +366,11 @@ dumpdir_cmp (const char *a, const char *b)
 static void
 diff_dumpdir (void)
 {
 static void
 diff_dumpdir (void)
 {

-  char *dumpdir_buffer;
+  const char *dumpdir_buffer;

   dev_t dev = 0;
   dev_t dev = 0;

-  struct stat stat;
+  struct stat stat_data;

 
 

-  if (deref_stat (true, current_stat_info.file_name, &stat))
+  if (deref_stat (true, current_stat_info.file_name, &stat_data))

     {
       if (errno == ENOENT)
        stat_warn (current_stat_info.file_name);
     {
       if (errno == ENOENT)
        stat_warn (current_stat_info.file_name);


@@ -378,9 +378,10 @@ diff_dumpdir (void)
        stat_error (current_stat_info.file_name);
     }
   else
        stat_error (current_stat_info.file_name);
     }
   else

-    dev = stat.st_dev;
+    dev = stat_data.st_dev;

 
 

-  dumpdir_buffer = get_directory_contents (current_stat_info.file_name, dev);
+  dumpdir_buffer = directory_contents
+                    (scan_directory (current_stat_info.file_name, dev, false));

 
   if (dumpdir_buffer)
     {
 
   if (dumpdir_buffer)
     {


@@ -597,12 +598,26 @@ verify_volume (void)
                            "VERIFY FAILURE: %d invalid headers detected",
                            counter), counter));
        }
                            "VERIFY FAILURE: %d invalid headers detected",
                            counter), counter));
        }

-      if (status == HEADER_ZERO_BLOCK || status == HEADER_END_OF_FILE)
+      if (status == HEADER_END_OF_FILE)

        break;
        break;

+      if (status == HEADER_ZERO_BLOCK)
+       {
+         set_next_block_after (current_header);
+          if (!ignore_zeros_option)
+            {
+             char buf[UINTMAX_STRSIZE_BOUND];

 
 

+             status = read_header (false);
+             if (status == HEADER_ZERO_BLOCK)
+               break;
+             WARNOPT (WARN_ALONE_ZERO_BLOCK,
+                      (0, 0, _("A lone zero block at %s"),
+                       STRINGIFY_BIGINT (current_block_ordinal (), buf)));
+            }
+       }
+      

       diff_archive ();
       tar_stat_destroy (&current_stat_info);
       diff_archive ();
       tar_stat_destroy (&current_stat_info);

-      xheader_destroy (&extended_header);

     }
 
   access_mode = ACCESS_WRITE;
     }
 
   access_mode = ACCESS_WRITE;