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use early return in runKexec

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Jörg Thalheim 2024-09-10 06:22:06 +02:00 committed by mergify[bot]
parent ef708ac46d
commit bc77bd1cca
1 changed files with 46 additions and 44 deletions
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90
src/nixos-anywhere.sh
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@ -375,65 +375,67 @@ importFacts() {
}
runKexec() {
if [[ ${isKexec-n} == "n" ]] && [[ ${isInstaller-n} == "n" ]]; then
if [[ ${isContainer-none} != "none" ]]; then
echo "WARNING: This script does not support running from a '${isContainer}' container. kexec will likely not work" >&2
fi
if [[ ${isKexec-n} == "y" ]] || [[ ${isInstaller-n} == "y" ]]; then
return
fi
if [[ $kexecUrl == "" ]]; then
case "${isArch-unknown}" in
x86_64 | aarch64)
kexecUrl="https://github.com/nix-community/nixos-images/releases/download/nixos-24.05/nixos-kexec-installer-noninteractive-${isArch}-linux.tar.gz"
;;
*)
abort "Unsupported architecture: ${isArch}. Our default kexec images only support x86_64 and aarch64 cpus. Checkout https://github.com/nix-community/nixos-anywhere/#using-your-own-kexec-image for more information."
;;
esac
fi
if [[ ${isContainer-none} != "none" ]]; then
echo "WARNING: This script does not support running from a '${isContainer}' container. kexec will likely not work" >&2
fi
step Switching system into kexec
runSsh sh <<SSH
if [[ $kexecUrl == "" ]]; then
case "${isArch-unknown}" in
x86_64 | aarch64)
kexecUrl="https://github.com/nix-community/nixos-images/releases/download/nixos-24.05/nixos-kexec-installer-noninteractive-${isArch}-linux.tar.gz"
;;
*)
abort "Unsupported architecture: ${isArch}. Our default kexec images only support x86_64 and aarch64 cpus. Checkout https://github.com/nix-community/nixos-anywhere/#using-your-own-kexec-image for more information."
;;
esac
fi
step Switching system into kexec
runSsh sh <<SSH
set -efu ${enableDebug}
$maybeSudo rm -rf /root/kexec
$maybeSudo mkdir -p /root/kexec
SSH
# no way to reach global ipv4 destinations, use gh-v6.com automatically if github url
if [[ ${hasIpv6_only-n} == "y" ]] && [[ $kexecUrl == "https://github.com/"* ]]; then
kexecUrl=${kexecUrl/"github.com"/"gh-v6.com"}
fi
# no way to reach global ipv4 destinations, use gh-v6.com automatically if github url
if [[ ${hasIpv6_only-n} == "y" ]] && [[ $kexecUrl == "https://github.com/"* ]]; then
kexecUrl=${kexecUrl/"github.com"/"gh-v6.com"}
fi
if [[ -f $kexecUrl ]]; then
runSsh "${maybeSudo} tar -C /root/kexec -xvzf-" <"$kexecUrl"
elif [[ ${hasCurl-n} == "y" ]]; then
runSsh "curl --fail -Ss -L '${kexecUrl}' | ${maybeSudo} tar -C /root/kexec -xvzf-"
elif [[ ${hasWget-n} == "y" ]]; then
runSsh "wget '${kexecUrl}' -O- | ${maybeSudo} tar -C /root/kexec -xvzf-"
else
curl --fail -Ss -L "${kexecUrl}" | runSsh "${maybeSudo} tar -C /root/kexec -xvzf-"
fi
if [[ -f $kexecUrl ]]; then
runSsh "${maybeSudo} tar -C /root/kexec -xvzf-" <"$kexecUrl"
elif [[ ${hasCurl-n} == "y" ]]; then
runSsh "curl --fail -Ss -L '${kexecUrl}' | ${maybeSudo} tar -C /root/kexec -xvzf-"
elif [[ ${hasWget-n} == "y" ]]; then
runSsh "wget '${kexecUrl}' -O- | ${maybeSudo} tar -C /root/kexec -xvzf-"
else
curl --fail -Ss -L "${kexecUrl}" | runSsh "${maybeSudo} tar -C /root/kexec -xvzf-"
fi
runSsh <<SSH
runSsh <<SSH
TMPDIR=/root/kexec setsid ${maybeSudo} /root/kexec/kexec/run --kexec-extra-flags "${kexecExtraFlags}"
SSH
# use the default SSH port to connect at this point
for i in "${!sshArgs[@]}"; do
if [[ ${sshArgs[i]} == "-p" ]]; then
sshArgs[i + 1]=$postKexecSshPort
break
fi
done
# use the default SSH port to connect at this point
for i in "${!sshArgs[@]}"; do
if [[ ${sshArgs[i]} == "-p" ]]; then
sshArgs[i + 1]=$postKexecSshPort
break
fi
done
# wait for machine to become unreachable.
while runSshTimeout -- exit 0; do sleep 1; done
# wait for machine to become unreachable.
while runSshTimeout -- exit 0; do sleep 1; done
# After kexec we explicitly set the user to root@
sshConnection="root@${sshHost}"
# After kexec we explicitly set the user to root@
sshConnection="root@${sshHost}"
# waiting for machine to become available again
until runSsh -o ConnectTimeout=10 -- exit 0; do sleep 5; done
fi
# waiting for machine to become available again
until runSsh -o ConnectTimeout=10 -- exit 0; do sleep 5; done
}
runDisko() {