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| author | Christian Brauner <brauner@kernel.org> | 2023-01-13 12:49:21 +0100 |
|---|---|---|
| committer | Christian Brauner (Microsoft) <brauner@kernel.org> | 2023-01-19 09:24:27 +0100 |
| commit | 8782a9aea3ab4d697ad67d1f8ebca38a4e1c24ab (patch) | |
| tree | 463017f753777d4b79f72166dc586e60cfbaff03 /fs/ext2 | |
| parent | 13e83a4923bea7c4f2f6714030cb7e56d20ef7e5 (diff) | |
| download | lwn-8782a9aea3ab4d697ad67d1f8ebca38a4e1c24ab.tar.gz lwn-8782a9aea3ab4d697ad67d1f8ebca38a4e1c24ab.zip | |
fs: port ->fileattr_set() 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/ext2')
| -rw-r--r-- | fs/ext2/ext2.h | 2 | ||||
| -rw-r--r-- | fs/ext2/ioctl.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h index 9ca0fda28928..5b52306e2e95 100644 --- a/fs/ext2/ext2.h +++ b/fs/ext2/ext2.h @@ -762,7 +762,7 @@ extern int ext2_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, /* ioctl.c */ extern int ext2_fileattr_get(struct dentry *dentry, struct fileattr *fa); -extern int ext2_fileattr_set(struct user_namespace *mnt_userns, +extern int ext2_fileattr_set(struct mnt_idmap *idmap, struct dentry *dentry, struct fileattr *fa); extern long ext2_ioctl(struct file *, unsigned int, unsigned long); extern long ext2_compat_ioctl(struct file *, unsigned int, unsigned long); diff --git a/fs/ext2/ioctl.c b/fs/ext2/ioctl.c index e8340bf09b10..dbd7de812cc1 100644 --- a/fs/ext2/ioctl.c +++ b/fs/ext2/ioctl.c @@ -27,7 +27,7 @@ int ext2_fileattr_get(struct dentry *dentry, struct fileattr *fa) return 0; } -int ext2_fileattr_set(struct user_namespace *mnt_userns, +int ext2_fileattr_set(struct mnt_idmap *idmap, struct dentry *dentry, struct fileattr *fa) { struct inode *inode = d_inode(dentry); |