Many files:

  Checked in e2fsprogs 0.5c

1 files changed, 65 insertions, 0 deletions

diff --git a/lib/ext2fs/cmp_bitmaps.c b/lib/ext2fs/cmp_bitmaps.c
new file mode 100644
index 00000000..cc9eb6d7
--- /dev/null
+++ b/lib/ext2fs/cmp_bitmaps.c
@@ -0,0 +1,65 @@
+/*
+ * cmp_bitmaps.c --- routines to compare inode and block bitmaps.
+ *
+ * Copyright (C) 1995 Theodore Ts'o.  This file may be redistributed
+ * under the terms of the GNU Public License.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <time.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include <linux/ext2_fs.h>
+
+#include "ext2fs.h"
+
+errcode_t ext2fs_compare_block_bitmap(ext2fs_block_bitmap bm1,
+				      ext2fs_block_bitmap bm2)
+{
+	int	i;
+	
+	EXT2_CHECK_MAGIC(bm1, EXT2_ET_MAGIC_BLOCK_BITMAP);
+	EXT2_CHECK_MAGIC(bm2, EXT2_ET_MAGIC_BLOCK_BITMAP);
+
+	if ((bm1->start != bm2->start) ||
+	    (bm1->end != bm2->end) ||
+	    (memcmp(bm1->bitmap, bm2->bitmap, (bm1->end - bm1->start)/8)))
+		return EXT2_ET_NEQ_BLOCK_BITMAP;
+
+	for (i = bm1->end - ((bm1->end - bm1->start) % 8); i <= bm1->end; i++)
+		if (ext2fs_fast_test_block_bitmap(bm1, i) !=
+		    ext2fs_fast_test_block_bitmap(bm2, i))
+			return EXT2_ET_NEQ_BLOCK_BITMAP;
+
+	return 0;
+}
+
+errcode_t ext2fs_compare_inode_bitmap(ext2fs_inode_bitmap bm1,
+				      ext2fs_inode_bitmap bm2)
+{
+	int	i;
+	
+	EXT2_CHECK_MAGIC(bm1, EXT2_ET_MAGIC_INODE_BITMAP);
+	EXT2_CHECK_MAGIC(bm2, EXT2_ET_MAGIC_INODE_BITMAP);
+
+	if ((bm1->start != bm2->start) ||
+	    (bm1->end != bm2->end) ||
+	    (memcmp(bm1->bitmap, bm2->bitmap, (bm1->end - bm1->start)/8)))
+		return EXT2_ET_NEQ_INODE_BITMAP;
+
+	for (i = bm1->end - ((bm1->end - bm1->start) % 8); i <= bm1->end; i++)
+		if (ext2fs_fast_test_inode_bitmap(bm1, i) !=
+		    ext2fs_fast_test_inode_bitmap(bm2, i))
+			return EXT2_ET_NEQ_INODE_BITMAP;
+
+	return 0;
+}
+