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authorChristian Brauner <brauner@kernel.org>2023-01-13 12:49:17 +0100
committerChristian Brauner (Microsoft) <brauner@kernel.org>2023-01-19 09:24:26 +0100
commite18275ae55e07a2937e48134589c2f4c1d99a369 (patch)
tree2e280f1962c08fb1ea5b23510a70ab2ba3120675 /fs/xfs/xfs_iops.c
parent5ebb29bee8d5fc173b774e0755be8cb335503ee3 (diff)
fs: port ->rename() to pass mnt_idmap
Convert to struct mnt_idmap. Last cycle we merged the necessary infrastructure in 256c8aed2b42 ("fs: introduce dedicated idmap type for mounts"). This is just the conversion to struct mnt_idmap. Currently we still pass around the plain namespace that was attached to a mount. This is in general pretty convenient but it makes it easy to conflate namespaces that are relevant on the filesystem with namespaces that are relevent on the mount level. Especially for non-vfs developers without detailed knowledge in this area this can be a potential source for bugs. Once the conversion to struct mnt_idmap is done all helpers down to the really low-level helpers will take a struct mnt_idmap argument instead of two namespace arguments. This way it becomes impossible to conflate the two eliminating the possibility of any bugs. All of the vfs and all filesystems only operate on struct mnt_idmap. Acked-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Diffstat (limited to 'fs/xfs/xfs_iops.c')
-rw-r--r--fs/xfs/xfs_iops.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 249b0d8fcd84..fd0c62e0ddd2 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -446,13 +446,14 @@ xfs_vn_symlink(
STATIC int
xfs_vn_rename(
- struct user_namespace *mnt_userns,
+ struct mnt_idmap *idmap,
struct inode *odir,
struct dentry *odentry,
struct inode *ndir,
struct dentry *ndentry,
unsigned int flags)
{
+ struct user_namespace *mnt_userns = mnt_idmap_owner(idmap);
struct inode *new_inode = d_inode(ndentry);
int omode = 0;
int error;