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ovl: port to vfs{g,u}id_t and associated helpers 

A while ago we introduced a dedicated vfs{g,u}id_t type in commit
1e5267cd08 ("mnt_idmapping: add vfs{g,u}id_t"). We already switched
over a good part of the VFS. Ultimately we will remove all legacy
idmapped mount helpers that operate only on k{g,u}id_t in favor of the
new type safe helpers that operate on vfs{g,u}id_t.

Cc: Seth Forshee (Digital Ocean) <sforshee@kernel.org>
Cc: Amir Goldstein <amir73il@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Christian Brauner 2022-09-09 11:07:47 +02:00 committed by Miklos Szeredi
parent 5b0db51215
commit 73db6a063c
1 changed files with 7 additions and 2 deletions
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9
fs/overlayfs/util.c
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@ -1104,13 +1104,18 @@ void ovl_copyattr(struct inode *inode)
struct path realpath;
struct inode *realinode;
struct user_namespace *real_mnt_userns;
vfsuid_t vfsuid;
vfsgid_t vfsgid;
ovl_i_path_real(inode, &realpath);
realinode = d_inode(realpath.dentry);
real_mnt_userns = mnt_user_ns(realpath.mnt);
inode->i_uid = i_uid_into_mnt(real_mnt_userns, realinode);
inode->i_gid = i_gid_into_mnt(real_mnt_userns, realinode);
vfsuid = i_uid_into_vfsuid(real_mnt_userns, realinode);
vfsgid = i_gid_into_vfsgid(real_mnt_userns, realinode);
inode->i_uid = vfsuid_into_kuid(vfsuid);
inode->i_gid = vfsgid_into_kgid(vfsgid);
inode->i_mode = realinode->i_mode;
inode->i_atime = realinode->i_atime;
inode->i_mtime = realinode->i_mtime;