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| author | Christian Brauner <brauner@kernel.org> | 2022-04-04 12:51:44 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2022-04-28 16:31:11 +0200 |
| commit | b65c20acef23cea2989c9f23414930149d38962f (patch) | |
| tree | 2e31e33cc37cc2952823031b593fba7476f9cadb /fs/overlayfs | |
| parent | 576bb263450bbba6601a9f528d0cf601d97a13e6 (diff) | |
| download | lwn-b65c20acef23cea2989c9f23414930149d38962f.tar.gz lwn-b65c20acef23cea2989c9f23414930149d38962f.zip | |
ovl: add ovl_upper_mnt_userns() wrapper
Add a tiny wrapper to retrieve the upper mount's idmapping. Have it
return the initial idmapping until we have prepared and converted all
places to take the relevant idmapping into account. Then we can switch
on idmapped layer support by having ovl_upper_mnt_userns() return the
upper mount's idmapping.
Suggested-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs')
| -rw-r--r-- | fs/overlayfs/ovl_entry.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/overlayfs/ovl_entry.h b/fs/overlayfs/ovl_entry.h index 63efee554f69..61b40d1268c8 100644 --- a/fs/overlayfs/ovl_entry.h +++ b/fs/overlayfs/ovl_entry.h @@ -90,6 +90,11 @@ static inline struct vfsmount *ovl_upper_mnt(struct ovl_fs *ofs) return ofs->layers[0].mnt; } +static inline struct user_namespace *ovl_upper_mnt_userns(struct ovl_fs *ofs) +{ + return &init_user_ns; +} + static inline struct ovl_fs *OVL_FS(struct super_block *sb) { return (struct ovl_fs *)sb->s_fs_info; |