From: Christian Brauner Date: Mon, 4 Apr 2022 10:51:58 +0000 (+0200) Subject: ovl: support idmapped layers X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=bc70682a497c4f3c968c552e465d1d9948b1ff4c;p=linux.git ovl: support idmapped layers Now that overlay is able to take a layers idmapping into account allow overlay mounts to be created on top of idmapped mounts. Cc: Tested-by: Giuseppe Scrivano Reviewed-by: Amir Goldstein Signed-off-by: Christian Brauner (Microsoft) Signed-off-by: Miklos Szeredi --- diff --git a/fs/overlayfs/ovl_entry.h b/fs/overlayfs/ovl_entry.h index 469162ca9b213..e1af8f6606984 100644 --- a/fs/overlayfs/ovl_entry.h +++ b/fs/overlayfs/ovl_entry.h @@ -92,7 +92,7 @@ static inline struct vfsmount *ovl_upper_mnt(struct ovl_fs *ofs) static inline struct user_namespace *ovl_upper_mnt_userns(struct ovl_fs *ofs) { - return &init_user_ns; + return mnt_user_ns(ovl_upper_mnt(ofs)); } static inline struct ovl_fs *OVL_FS(struct super_block *sb) diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 0123c8086ee96..e0a2e0468ee7f 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -874,10 +874,6 @@ static int ovl_mount_dir_noesc(const char *name, struct path *path) pr_err("filesystem on '%s' not supported\n", name); goto out_put; } - if (is_idmapped_mnt(path->mnt)) { - pr_err("idmapped layers are currently not supported\n"); - goto out_put; - } if (!d_is_dir(path->dentry)) { pr_err("'%s' not a directory\n", name); goto out_put;