libext2fs: remove lib/ext2fs/sparse.c

This file was never getting compiled, and there is no user of
ext2fs_list_backups() in the e2fsprogs sources.  So remove it as a
clean up.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/lib/ext2fs/sparse.c b/lib/ext2fs/sparse.c
deleted file mode 100644 (file)
index 3a0877b..0000000
--- a/lib/ext2fs/sparse.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * sparse.c --- find the groups in an ext2 filesystem with metadata backups
- *
- * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
- * Copyright (C) 2002 Andreas Dilger.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Library
- * General Public License, version 2.
- * %End-Header%
- */
-
-#include "config.h"
-#include <stdio.h>
-
-#include "ext2_fs.h"
-#include "ext2fsP.h"
-
-static int test_root(int a, int b)
-{
-       if (a == 0)
-               return 1;
-       while (1) {
-               if (a == 1)
-                       return 1;
-               if (a % b)
-                       return 0;
-               a = a / b;
-       }
-}
-
-int ext2fs_bg_has_super(ext2_filsys fs, int group_block)
-{
-       if (!(fs->super->s_feature_ro_compat &
-             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER))
-               return 1;
-
-       if (test_root(group_block, 3) || (test_root(group_block, 5)) ||
-           test_root(group_block, 7))
-               return 1;
-
-       return 0;
-}
-
-/*
- * Iterate through the groups which hold BACKUP superblock/GDT copies in an
- * ext3 filesystem.  The counters should be initialized to 1, 5, and 7 before
- * calling this for the first time.  In a sparse filesystem it will be the
- * sequence of powers of 3, 5, and 7: 1, 3, 5, 7, 9, 25, 27, 49, 81, ...
- * For a non-sparse filesystem it will be every group: 1, 2, 3, 4, ...
- */
-unsigned int ext2fs_list_backups(ext2_filsys fs, unsigned int *three,
-                                unsigned int *five, unsigned int *seven)
-{
-       unsigned int *min = three;
-       int mult = 3;
-       unsigned int ret;
-
-       if (!(fs->super->s_feature_ro_compat &
-             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
-               ret = *min;
-               *min += 1;
-               return ret;
-       }
-
-       if (*five < *min) {
-               min = five;
-               mult = 5;
-       }
-       if (*seven < *min) {
-               min = seven;
-               mult = 7;
-       }
-
-       ret = *min;
-       *min *= mult;
-
-       return ret;
-}