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authorChristian Brauner <brauner@kernel.org>2023-01-13 12:49:21 +0100
committerChristian Brauner (Microsoft) <brauner@kernel.org>2023-01-19 09:24:27 +0100
commit8782a9aea3ab4d697ad67d1f8ebca38a4e1c24ab (patch)
tree463017f753777d4b79f72166dc586e60cfbaff03 /fs/jfs
parent13e83a4923bea7c4f2f6714030cb7e56d20ef7e5 (diff)
downloadlwn-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/jfs')
-rw-r--r--fs/jfs/ioctl.c2
-rw-r--r--fs/jfs/jfs_inode.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/fs/jfs/ioctl.c b/fs/jfs/ioctl.c
index 1e7b177ece60..ed7989bc2db1 100644
--- a/fs/jfs/ioctl.c
+++ b/fs/jfs/ioctl.c
@@ -70,7 +70,7 @@ int jfs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
return 0;
}
-int jfs_fileattr_set(struct user_namespace *mnt_userns,
+int jfs_fileattr_set(struct mnt_idmap *idmap,
struct dentry *dentry, struct fileattr *fa)
{
struct inode *inode = d_inode(dentry);
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h
index 6440935a9895..ea80661597ac 100644
--- a/fs/jfs/jfs_inode.h
+++ b/fs/jfs/jfs_inode.h
@@ -10,7 +10,7 @@ struct fid;
extern struct inode *ialloc(struct inode *, umode_t);
extern int jfs_fsync(struct file *, loff_t, loff_t, int);
extern int jfs_fileattr_get(struct dentry *dentry, struct fileattr *fa);
-extern int jfs_fileattr_set(struct user_namespace *mnt_userns,
+extern int jfs_fileattr_set(struct mnt_idmap *idmap,
struct dentry *dentry, struct fileattr *fa);
extern long jfs_ioctl(struct file *, unsigned int, unsigned long);
extern struct inode *jfs_iget(struct super_block *, unsigned long);