[PATCH v2 04/12] erofs-utils: lib: fix erofs_init_devices() in multidev mode

[Jingbo Xu]

Fix the missing le32_to_cpu().  Read and cache blocks of each device for
later use.

Initialize sbi->extra_devices from on-disk extra_devices.

Fixes: 0ce853a01123 ("erofs-utils: fuse: add multiple device support")
Reviewed-by: Gao Xiang <hsiangkao at linux.alibaba.com>
Signed-off-by: Jingbo Xu <jefflexu at linux.alibaba.com>
---
 lib/super.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/lib/super.c b/lib/super.c
index e8e84aa..54ab29b 100644
--- a/lib/super.c
+++ b/lib/super.c
@@ -36,11 +36,7 @@ static int erofs_init_devices(struct erofs_sb_info *sbi,
 	else
 		ondisk_extradevs = le16_to_cpu(dsb->extra_devices);
 
-	if (ondisk_extradevs != sbi->extra_devices) {
-		erofs_err("extra devices don't match (ondisk %u, given %u)",
-			  ondisk_extradevs, sbi->extra_devices);
-		return -EINVAL;
-	}
+	sbi->extra_devices = ondisk_extradevs;
 	if (!ondisk_extradevs)
 		return 0;
 
@@ -59,8 +55,9 @@ static int erofs_init_devices(struct erofs_sb_info *sbi,
 			return ret;
 		}
 
-		sbi->devs[i].mapped_blkaddr = dis.mapped_blkaddr;
-		sbi->total_blocks += dis.blocks;
+		sbi->devs[i].mapped_blkaddr = le32_to_cpu(dis.mapped_blkaddr);
+		sbi->devs[i].blocks = le32_to_cpu(dis.blocks);
+		sbi->total_blocks += sbi->devs[i].blocks;
 		pos += EROFS_DEVT_SLOT_SIZE;
 	}
 	return 0;
-- 
2.19.1.6.gb485710b