> > How does this work today then? Is it actually the case that initramfs > > just cannot be used on an IMA-enabled system, or it can but it leaves > > the initramfs unverified and we're trying to fix that? I had assumed the > > latter. > Oooh, it's done not by starting IMA appraisal later, but by loading a > default policy to ignore initramfs?
Right, when rootfs is a tmpfs filesystem, it supports xattrs, allowing for finer grained policies to be defined. This patch set would allow a builtin IMA appraise policy to be defined which includes tmpfs. Mimi
