From 51a43b47fefaea46b00a74180a7d0b39022e6d11 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Sat, 24 Sep 2005 07:11:16 +0000
Subject: import the very fat e2fsck/fsck applets

---
 e2fsprogs/e2fsck/badblocks.c | 136 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 e2fsprogs/e2fsck/badblocks.c

(limited to 'e2fsprogs/e2fsck/badblocks.c')

diff --git a/e2fsprogs/e2fsck/badblocks.c b/e2fsprogs/e2fsck/badblocks.c
new file mode 100644
index 000000000..09ef3ab1b
--- /dev/null
+++ b/e2fsprogs/e2fsck/badblocks.c
@@ -0,0 +1,136 @@
+/*
+ * badblocks.c --- replace/append bad blocks to the bad block inode
+ * 
+ * Copyright (C) 1993, 1994 Theodore Ts'o.  This file may be
+ * redistributed under the terms of the GNU Public License.
+ */
+
+#include <time.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include <et/com_err.h>
+#include "e2fsck.h"
+
+static int check_bb_inode_blocks(ext2_filsys fs, blk_t *block_nr, int blockcnt,
+				 void *priv_data);
+
+
+static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
+{
+	printf(_("Bad block %u out of range; ignored.\n"), blk);
+	return;
+}
+
+void read_bad_blocks_file(e2fsck_t ctx, const char *bad_blocks_file,
+			  int replace_bad_blocks)
+{
+	ext2_filsys fs = ctx->fs;
+	errcode_t	retval;
+	badblocks_list	bb_list = 0;
+	FILE		*f;
+	char		buf[1024];
+
+	e2fsck_read_bitmaps(ctx);
+
+	/*
+	 * Make sure the bad block inode is sane.  If there are any
+	 * illegal blocks, clear them.
+	 */
+	retval = ext2fs_block_iterate(fs, EXT2_BAD_INO, 0, 0,
+				      check_bb_inode_blocks, 0);
+	if (retval) {
+		com_err("ext2fs_block_iterate", retval,
+			_("while sanity checking the bad blocks inode"));
+		goto fatal;
+	}
+	
+	/*
+	 * If we're appending to the bad blocks inode, read in the
+	 * current bad blocks.
+	 */
+	if (!replace_bad_blocks) {
+		retval = ext2fs_read_bb_inode(fs, &bb_list);
+		if (retval) {
+			com_err("ext2fs_read_bb_inode", retval,
+				_("while reading the bad blocks inode"));
+			goto fatal;
+		}
+	}
+	
+	/*
+	 * Now read in the bad blocks from the file; if
+	 * bad_blocks_file is null, then try to run the badblocks
+	 * command.
+	 */
+	if (bad_blocks_file) {
+		f = fopen(bad_blocks_file, "r");
+		if (!f) {
+			com_err("read_bad_blocks_file", errno,
+				_("while trying to open %s"), bad_blocks_file);
+			goto fatal;
+		}
+	} else {
+		sprintf(buf, "badblocks -b %d %s%s%s %d", fs->blocksize,
+			(ctx->options & E2F_OPT_PREEN) ? "" : "-s ",
+			(ctx->options & E2F_OPT_WRITECHECK) ? "-n " : "",
+			fs->device_name, fs->super->s_blocks_count);
+		f = popen(buf, "r");
+		if (!f) {
+			com_err("read_bad_blocks_file", errno,
+				_("while trying popen '%s'"), buf);
+			goto fatal;
+		}
+	}
+	retval = ext2fs_read_bb_FILE(fs, f, &bb_list, invalid_block);
+	if (bad_blocks_file) 
+		fclose(f);
+	else
+		pclose(f);
+	if (retval) {
+		com_err("ext2fs_read_bb_FILE", retval,
+			_("while reading in list of bad blocks from file"));
+		goto fatal;
+	}
+	
+	/*
+	 * Finally, update the bad blocks from the bad_block_map
+	 */
+	retval = ext2fs_update_bb_inode(fs, bb_list);
+	if (retval) {
+		com_err("ext2fs_update_bb_inode", retval,
+			_("while updating bad block inode"));
+		goto fatal;
+	}
+
+	ext2fs_badblocks_list_free(bb_list);
+	return;
+	
+fatal:
+	ctx->flags |= E2F_FLAG_ABORT;
+	return;
+	
+}
+
+static int check_bb_inode_blocks(ext2_filsys fs, 
+				 blk_t *block_nr, 
+				 int blockcnt EXT2FS_ATTR((unused)),
+				 void *priv_data EXT2FS_ATTR((unused)))
+{
+	if (!*block_nr)
+		return 0;
+
+	/*
+	 * If the block number is outrageous, clear it and ignore it.
+	 */
+	if (*block_nr >= fs->super->s_blocks_count ||
+	    *block_nr < fs->super->s_first_data_block) {
+		printf(_("Warning illegal block %u found in bad block inode.  Cleared.\n"), *block_nr);
+		*block_nr = 0;
+		return BLOCK_CHANGED;
+	}
+
+	return 0;
+}
+
-- 
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