diff options
| author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-02-06 21:56:15 -0500 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-02-08 21:19:59 +0100 |
| commit | a4af51ce229b1e1eab003966dbfebf9d80093a77 (patch) | |
| tree | 764a2915360b2a16216a5e7e873361e4716ad7a2 /fs/ocfs2 | |
| parent | 6613476e225e090cc9aad49be7fa504e290dd33d (diff) | |
fs: super_set_uuid()
Some weird old filesytems have UUID-like things that we wish to expose
as UUIDs, but are smaller; add a length field so that the new
FS_IOC_(GET|SET)UUID ioctls can handle them in generic code.
And add a helper super_set_uuid(), for setting nonstandard length uuids.
Helper is now required for the new FS_IOC_GETUUID ioctl; if
super_set_uuid() hasn't been called, the ioctl won't be supported.
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Link: https://lore.kernel.org/r/20240207025624.1019754-2-kent.overstreet@linux.dev
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/ocfs2')
| -rw-r--r-- | fs/ocfs2/super.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 6b906424902b..a70aff17d455 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -2027,8 +2027,8 @@ static int ocfs2_initialize_super(struct super_block *sb, cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); - memcpy(&sb->s_uuid, di->id2.i_super.s_uuid, - sizeof(di->id2.i_super.s_uuid)); + super_set_uuid(sb, di->id2.i_super.s_uuid, + sizeof(di->id2.i_super.s_uuid)); osb->osb_dx_mask = (1 << (cbits - bbits)) - 1; |