Thanks for the review.
I uploaded a new version.
The patch changes the path to /proc/self/mounts not sure if it is any
best practice
regarding /proc/mounts vs. /proc/self/mount
The test is actually valid, and it's good that it's failing.
/etc/mtab has been long obsolete, and:
* debootstrap doesn't create it at install time
* systemd 228 dropped any compat
* modular rc systems (via /etc/init.d/checkroot.sh) create a compat symlink
but it's never handled beyond that, at least on Linux
The program fails at runtime if it can't access /etc/mtab .
Lets instead patch the source to change /etc/mtab to /proc/mounts (aka
/proc/self/mounts).
