glibc recently changed how dns name resolution is implemented. It now
needs additional .so files that are loaded dynamically. Include these
files in the initramfs image.
Before this patch sysrescue-configuration.lua was executed twice each boot:
(1) during initramfs stage (2) in the regular system as sysrescue-configuration.service
While in theory both runs should create the same output, this isn't guaranteed and
differences could appear for example because of network issues. Finding and debugging
these is difficult because the output of sysrescue-configuration.lua created during
initramfs isn't available anymore when the final system is running.
This patch lets sysrescue-configuration.lua just run once during initramfs. The
output JSON file is then written to the new tmpfs mounted dir /run/archiso/config/.
This dir is also made the new default location for sysrescue-effective-config.json.
A symlink from /etc/sysrescue/sysrescue-effective-config.json to the new location
is created for compatibility with previous releases.
Load *.srm files from archisobasedir, create loopback devices for
each one, mount and use them as additional overlayfs lowerdirs.
Compared to SystemRescueCd 5, it has differences:
- loadsrm must be added to kernel cmdline, othewise srm files
will not be loaded (opt-in)
- it does not check srm checksums (.md5)
- it does not allow specify explicit file names
(loadsrm=foo.srm,bar.srm)
Closesfdupoux/sysresccd-src#122
