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authorKent Overstreet <kent.overstreet@linux.dev>2024-02-07 05:56:15 +0300
committerChristian Brauner <brauner@kernel.org>2024-02-08 23:19:59 +0300
commita4af51ce229b1e1eab003966dbfebf9d80093a77 (patch)
tree764a2915360b2a16216a5e7e873361e4716ad7a2 /fs/gfs2
parent6613476e225e090cc9aad49be7fa504e290dd33d (diff)
downloadlinux-a4af51ce229b1e1eab003966dbfebf9d80093a77.tar.xz
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/gfs2')
-rw-r--r--fs/gfs2/ops_fstype.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 1281e60be639..572d58e86296 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -214,7 +214,7 @@ static void gfs2_sb_in(struct gfs2_sbd *sdp, const void *buf)
memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN);
memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN);
- memcpy(&s->s_uuid, str->sb_uuid, 16);
+ super_set_uuid(s, str->sb_uuid, 16);
}
/**