File system images

Though a rump kernel does not require a root file system image, some applications and library routines expect to be able to access files. For example, the getservent() call searches /etc/services, and a web server serving static content typically serves it from a file system hierarchy. To satisfy these demands, we mount file systems in the rump kernel file system namespace. Any file system type, e.g. NFS, would do, but it's usually simplest mount a prepopulated image.

We supply these prepopulated images in the img subdirectory of this repository. If your host does not support FFS, you can still examine and modify the images using the portable fs-utils tool suite.