glibcrun

glibcrun is utility for launching glibc linked binaries in isolated namespaces in musl-libc Void Linux installations.

It creates new private mount namespace for the running process, "replacing" /usr and /var/db/xbps with directories from your glibc basedir using bind mounts, and launches your glibc program.

Creating glibc chroot

I will use /glibc directory name for an example, you can use any other path you want.

# mkdir /glibc
# XBPS_ARCH=x86_64 xbps-install --repository=http://alpha.de.repo.voidlinux.org/current -r /glibc -S base-voidstrap

When it's done you may want to chroot into it, e.g. to install some dependencies for your glibc software.

Installing glibcrun

Just clone the repo, and then:

$ make
$ sudo make install

Note that installed binary must be owned as root and have suid bit. make install should handle it, but anyway.

Usage

glibcrun needs to know the path to your glibc base directory and it reads it from the GLIBCRUN_DIR environment variable. You may want to add something like this to your ~/.bashrc or similar script:

export GLIBCRUN_DIR=/glibc

When glibcrun is run without arguments it will attempt to launch a shell from your SHELL variable, otherwise it will treat the first argument as a path to an executable and the rest as a list of arguments.

Example:

glibcrun /opt/palemoon/palemoon -ProfileManager

will launch /opt/palemoon/palemoon -ProfileManager.

License

BSD-2c