I have successfully booted into a NetBSD kernel with a custom ramdisk that has a statically linked init that does nothing.
Baby steps!
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Yeah, well, I'm not gonna do that from C, and /rescue/mount_mfs is big. But perhaps it fits.
Buut, there's mount_tmpfs! And I suppose I actually want that, not mfs, so lets see how hard it is to do in C.
Nice. That works. So the next step then is:
- mount
tmpfsas/altroot - mount
/dev/dk0as/altroot/tbd - symlink every directory in
/altroot/tbdto/altroot - chroot to
/altroot - exec
/usr/pkg/sbin/dinit