targetRoot=/mnt/root
fail() {
# If starting stage 2 failed, start an interactive shell.
echo "error while running Stage 1"
echo "Stage 1 should mount the root partition containing the nix store on
\`$targetRoot'";
echo
echo "stage 2 is \$stage2Init $stage2Init"
echo "I'll launch an interactive shell you should exit with to"
echo " - status 0: continue"
echo " (type exit or press ctrl-d)"
echo " - status 2: finally switch to interactive shell (exec @staticShell) "
echo " (type exit 2)"
export $stage2Init
# no longer using exec here, so after resuming we'll have this shell as
@staticShell@;
case $? in
0) echo "resuming ..";;
2) echo "switching to final interactive shell using exec .."; exec
@staticShell@;;
*) echo "got exit status $? from interactive shell, quiting."
echo "you'll have to reboot"; exit;;
esac
}
trap 'fail' ERR; # if we were using bash we could even show the malicious
command using "$BASH_COMMAND"
new features:
* resuming
* docuemntation (what should be mounted where here)
It has been:
fail() {
# If starting stage 2 failed, start an interactive shell.
echo "Stage 2 failed, starting emergency shell..."
echo "(Stage 1 init script is $stage2Init)"
exec @staticShell@
}
Marc Weber
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