Commit 459c7c56 authored Dec 14, 2020 by Miklos Szeredi

ovl: unprivieged mounts



Enable unprivileged user namespace mounts of overlayfs.  Overlayfs's
permission model (*) ensures that the mounter itself cannot gain additional
privileges by the act of creating an overlayfs mount.

This feature request is coming from the "rootless" container crowd.

(*) Documentation/filesystems/overlayfs.txt#Permission model

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

parent 87b2c60c

fs/overlayfs/super.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -2096,6 +2096,7 @@ static struct dentry ovl_mount(struct file_system_type fs_type, int flags,
		static struct file_system_type ovl_fs_type = {
		.owner = THIS_MODULE,
		.name = "overlay",
		.fs_flags = FS_USERNS_MOUNT,
		.mount = ovl_mount,
		.kill_sb = kill_anon_super,
		};

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