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| author | Christian Brauner <brauner@kernel.org> | 2023-01-13 12:49:11 +0100 |
|---|---|---|
| committer | Christian Brauner (Microsoft) <brauner@kernel.org> | 2023-01-19 09:24:02 +0100 |
| commit | c1632a0f11209338fc300c66252bcc4686e609e8 (patch) | |
| tree | 0a17d3844bb4fbdabc565f022a8da3bed1fe361a /fs/configfs | |
| parent | fs: port vfs_*() helpers to struct mnt_idmap (diff) | |
| download | linux-c1632a0f11209338fc300c66252bcc4686e609e8.tar.xz linux-c1632a0f11209338fc300c66252bcc4686e609e8.zip | |
fs: port ->setattr() 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/configfs')
| -rw-r--r-- | fs/configfs/configfs_internal.h | 2 | ||||
| -rw-r--r-- | fs/configfs/inode.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/fs/configfs/configfs_internal.h b/fs/configfs/configfs_internal.h index c0395363eab9..a94493ed3146 100644 --- a/fs/configfs/configfs_internal.h +++ b/fs/configfs/configfs_internal.h @@ -77,7 +77,7 @@ extern void configfs_hash_and_remove(struct dentry * dir, const char * name); extern const unsigned char * configfs_get_name(struct configfs_dirent *sd); extern void configfs_drop_dentry(struct configfs_dirent *sd, struct dentry *parent); -extern int configfs_setattr(struct user_namespace *mnt_userns, +extern int configfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, struct iattr *iattr); extern struct dentry *configfs_pin_fs(void); diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c index b601610e9907..1c15edbe70ff 100644 --- a/fs/configfs/inode.c +++ b/fs/configfs/inode.c @@ -32,7 +32,7 @@ static const struct inode_operations configfs_inode_operations ={ .setattr = configfs_setattr, }; -int configfs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, +int configfs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, struct iattr *iattr) { struct inode * inode = d_inode(dentry); @@ -60,7 +60,7 @@ int configfs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, } /* attributes were changed atleast once in past */ - error = simple_setattr(mnt_userns, dentry, iattr); + error = simple_setattr(idmap, dentry, iattr); if (error) return error; |