Messages in this thread Patch in this message | | | From | Colin King <> | Subject | [PATCH] squashfs: generate uuid for the superblock rather than leaving it zero | Date | Thu, 7 Nov 2019 15:58:01 +0000 |
| |
From: Colin Ian King <colin.king@canonical.com>
The squashfs superblock uuid is currently all zero and it can be useful to have this set. Generate the uuid based on some of squashfs superblock data to produce a reasonable uuid pattern.
Signed-off-by: Colin Ian King <colin.king@canonical.com> --- fs/squashfs/super.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c index 0cc4ceec0562..ac9d17e05fac 100644 --- a/fs/squashfs/super.c +++ b/fs/squashfs/super.c @@ -193,6 +193,12 @@ static int squashfs_fill_super(struct super_block *sb, struct fs_context *fc) err = -ENOMEM; + memcpy(&sb->s_uuid.b[0], &sblk->inodes, 4); + memcpy(&sb->s_uuid.b[4], &sblk->mkfs_time, 4); + memcpy(&sb->s_uuid.b[8], &sblk->fragments, 4); + memcpy(&sb->s_uuid.b[12], &sblk->compression, 2); + memcpy(&sb->s_uuid.b[14], &sblk->block_log, 2); + msblk->block_cache = squashfs_cache_init("metadata", SQUASHFS_CACHED_BLKS, SQUASHFS_METADATA_SIZE); if (msblk->block_cache == NULL) -- 2.20.1
| |