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authorChristian Brauner <brauner@kernel.org>2023-01-13 14:49:12 +0300
committerChristian Brauner (Microsoft) <brauner@kernel.org>2023-01-19 11:24:25 +0300
commitb74d24f7a74ffd2d42ca883d84b7422b8d545901 (patch)
treed7dbd3114e0e1c04a1c03c894c68fdbb566fce0b /fs/overlayfs/overlayfs.h
parentc1632a0f11209338fc300c66252bcc4686e609e8 (diff)
downloadlinux-b74d24f7a74ffd2d42ca883d84b7422b8d545901.tar.xz
fs: port ->getattr() 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/overlayfs/overlayfs.h')
-rw-r--r--fs/overlayfs/overlayfs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h
index 4cd435aabbb4..b6e17f631b53 100644
--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -599,7 +599,7 @@ unsigned int ovl_get_nlink(struct ovl_fs *ofs, struct dentry *lowerdentry,
unsigned int fallback);
int ovl_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
struct iattr *attr);
-int ovl_getattr(struct user_namespace *mnt_userns, const struct path *path,
+int ovl_getattr(struct mnt_idmap *idmap, const struct path *path,
struct kstat *stat, u32 request_mask, unsigned int flags);
int ovl_permission(struct user_namespace *mnt_userns, struct inode *inode,
int mask);