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authorDenis Vlasenko2006-12-26 01:30:59 +0000
committerDenis Vlasenko2006-12-26 01:30:59 +0000
commitc4f623ef2a7980a63de7c9f1d539a656b83f10e7 (patch)
treea294e28b0112052cb9d58b403554b3390e76f50c /e2fsprogs/old_e2fsprogs/ext2fs/ind_block.c
parent64c54025842f205ad722675105b88044a5b6845a (diff)
downloadbusybox-c4f623ef2a7980a63de7c9f1d539a656b83f10e7.zip
busybox-c4f623ef2a7980a63de7c9f1d539a656b83f10e7.tar.gz
put small subset of e2fsprogs back in the tree:
lsattr, chattr, fsck. Old e2fsprogs tree is in e2fsprogs/old_e2fsprogs/*.
Diffstat (limited to 'e2fsprogs/old_e2fsprogs/ext2fs/ind_block.c')
-rw-r--r--e2fsprogs/old_e2fsprogs/ext2fs/ind_block.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/e2fsprogs/old_e2fsprogs/ext2fs/ind_block.c b/e2fsprogs/old_e2fsprogs/ext2fs/ind_block.c
new file mode 100644
index 0000000..c86a1c5
--- /dev/null
+++ b/e2fsprogs/old_e2fsprogs/ext2fs/ind_block.c
@@ -0,0 +1,71 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * ind_block.c --- indirect block I/O routines
+ *
+ * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ * 2001, 2002, 2003, 2004, 2005 by Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "ext2_fs.h"
+#include "ext2fs.h"
+
+errcode_t ext2fs_read_ind_block(ext2_filsys fs, blk_t blk, void *buf)
+{
+ errcode_t retval;
+#if BB_BIG_ENDIAN
+ blk_t *block_nr;
+ int i;
+ int limit = fs->blocksize >> 2;
+#endif
+
+ if ((fs->flags & EXT2_FLAG_IMAGE_FILE) &&
+ (fs->io != fs->image_io))
+ memset(buf, 0, fs->blocksize);
+ else {
+ retval = io_channel_read_blk(fs->io, blk, 1, buf);
+ if (retval)
+ return retval;
+ }
+#if BB_BIG_ENDIAN
+ if (fs->flags & (EXT2_FLAG_SWAP_BYTES | EXT2_FLAG_SWAP_BYTES_READ)) {
+ block_nr = (blk_t *) buf;
+ for (i = 0; i < limit; i++, block_nr++)
+ *block_nr = ext2fs_swab32(*block_nr);
+ }
+#endif
+ return 0;
+}
+
+errcode_t ext2fs_write_ind_block(ext2_filsys fs, blk_t blk, void *buf)
+{
+#if BB_BIG_ENDIAN
+ blk_t *block_nr;
+ int i;
+ int limit = fs->blocksize >> 2;
+#endif
+
+ if (fs->flags & EXT2_FLAG_IMAGE_FILE)
+ return 0;
+
+#if BB_BIG_ENDIAN
+ if (fs->flags & (EXT2_FLAG_SWAP_BYTES | EXT2_FLAG_SWAP_BYTES_WRITE)) {
+ block_nr = (blk_t *) buf;
+ for (i = 0; i < limit; i++, block_nr++)
+ *block_nr = ext2fs_swab32(*block_nr);
+ }
+#endif
+ return io_channel_write_blk(fs->io, blk, 1, buf);
+}
+
+