reworked error handling on startup (stage-1)
on any error you'll be asked to run (interactive/ final) shell or continue ignoring the error svn path=/nixos/trunk/; revision=12639
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@ -1,11 +1,36 @@
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#! @staticShell@
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targetRoot=/mnt/root
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dialog(){
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timeout=15
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echo
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echo "Press within $timeout seconds:"
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echo " f) to switch finally to an interactive shell having pid 1"
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echo " (you'll need this to start stage2 / upstart)"
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echo " i) to launch an intercative shell"
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echo " *) to continue immediately (ignoring the failing command)"
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read -t $timeout reply
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case $reply in
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f) exec @staticShell@;;
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i) echo
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echo "Quit interactive shell with exit status of"
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echo " 0 : to continue"
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echo " non zero : to get this dialog again (eg to switch to interactive shell with pid 1"
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@staticShell@ || fail
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;;
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*) echo continuing ignoring error;;
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esac
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}
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fail(){
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# If starting stage 2 failed, start an interactive shell.
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echo "Stage 2 failed, starting emergency shell..."
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echo "(Stage 1 init script is $stage2Init)"
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exec @staticShell@
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echo "error while running Stage 1"
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echo "Stage 1 should mount the root partition containing the nix store on \`$targetRoot'";
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echo
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dialog
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}
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trap 'fail' ERR;
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# Poor man's `basename'.
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@ -232,4 +257,9 @@ if test -z "$stage2Init"; then fail; fi
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umount /sys
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umount /proc
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exec run-init "$targetRoot" "$stage2Init"
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fail
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echo
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echo $1 failed running "$stage2Init"
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echo "It's your last chance to fix things manually without rebooting"
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echo "finally switching to interactive shell pid 1"
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export $stage2Init; exec @staticShell@
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