linux-ext4 - [RFC PATCH v2 10/51] e2fsck: copy badblocks when copying fs

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Date:   Fri, 19 Jun 2020 00:27:13 +0900
From:   Wang Shilong <wangshilong1991@...il.com>
To:     linux-ext4@...r.kernel.org
Cc:     lixi@....com, adilger@...ger.ca, wangshilong1991@...il.com,
        sihara@....com, Wang Shilong <wshilong@....com>
Subject: [RFC PATCH v2 10/51] e2fsck: copy badblocks when copying fs

From: Li Xi <lixi@....com>

This patch copies badblocks when the copying fs.

Signed-off-by: Li Xi <lixi@....com>
Signed-off-by: Wang Shilong <wshilong@....com>
---
 e2fsck/pass1.c | 55 ++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 47 insertions(+), 8 deletions(-)

diff --git a/e2fsck/pass1.c b/e2fsck/pass1.c
index b836e666..a1feb166 100644
--- a/e2fsck/pass1.c
+++ b/e2fsck/pass1.c
@@ -2145,10 +2145,23 @@ static errcode_t e2fsck_pass1_copy_fs(ext2_filsys dest, ext2_filsys src)
 		src->dblist = NULL;
 	}
 
+	if (src->badblocks) {
+		retval = ext2fs_badblocks_copy(src->badblocks, &dest->badblocks);
+		if (retval)
+			goto out_dblist;
+
+		ext2fs_badblocks_list_free(src->badblocks);
+		src->badblocks = NULL;
+	}
 	return 0;
+
+out_dblist:
+	ext2fs_free_dblist(dest->dblist);
+	dest->dblist = NULL;
+	return retval;
 }
 
-static int e2fsck_pass1_merge_fs(ext2_filsys dest, ext2_filsys src)
+static int _e2fsck_pass1_merge_fs(ext2_filsys dest, ext2_filsys src)
 {
 	errcode_t	retval = 0;
 
@@ -2160,6 +2173,32 @@ static int e2fsck_pass1_merge_fs(ext2_filsys dest, ext2_filsys src)
 	PASS1_COPY_FS_BITMAP(dest, src, inode_map);
 	PASS1_COPY_FS_BITMAP(dest, src, block_map);
 
+	if (src->dblist) {
+		retval = ext2fs_copy_dblist(src->dblist, &dest->dblist);
+		if (retval)
+			return retval;
+		/* The ext2fs_copy_dblist() uses the src->fs as the fs */
+		dest->dblist->fs = dest;
+	}
+
+	if (src->badblocks) {
+		retval = ext2fs_badblocks_copy(src->badblocks, &dest->badblocks);
+		if (retval)
+			goto out_dblist;
+	}
+	return 0;
+out_dblist:
+	ext2fs_free_dblist(dest->dblist);
+	dest->dblist = NULL;
+	return retval;
+}
+
+static int e2fsck_pass1_merge_fs(ext2_filsys dest, ext2_filsys src)
+{
+	errcode_t	retval;
+
+	retval = _e2fsck_pass1_merge_fs(dest, src);
+
 	/* icache will be rebuilt if needed, so do not copy from @src */
 	if (src->icache) {
 		ext2fs_free_inode_cache(src->icache);
@@ -2167,16 +2206,16 @@ static int e2fsck_pass1_merge_fs(ext2_filsys dest, ext2_filsys src)
 	}
 	dest->icache = NULL;
 
-	if (dest->dblist) {
-		retval = ext2fs_copy_dblist(src->dblist, &dest->dblist);
-		if (retval == 0) {
-			/* The ext2fs_copy_dblist() uses the src->fs as the fs */
-			dest->dblist->fs = dest;
-		}
-
+	if (src->dblist) {
 		ext2fs_free_dblist(src->dblist);
 		src->dblist = NULL;
 	}
+
+	if (src->badblocks) {
+		ext2fs_badblocks_list_free(src->badblocks);
+		src->badblocks = NULL;
+	}
+
 	return retval;
 }
 
-- 
2.25.4