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#!/usr/bin/env bash
( # subshell for variable scoping
SLX_INITIAL_KERNEL_COMMAND_LINE="$(cat /proc/cmdline | tr --delete '\n')"
# This location will be used to have a writable kernel command line file
# location.
writeable_proc_cmdline_path='/writable_proc_cmdline/'
mkdir --parents "$writeable_proc_cmdline_path"
# NOTE: The fake writeable overlay have to be a temporary filesystem for the
# hack to work.
mount --types tmpfs tmpfs "$writeable_proc_cmdline_path"
echo -n "$SLX_INITIAL_KERNEL_COMMAND_LINE" > \
"${writeable_proc_cmdline_path}/cmdline"
echo -e \
'-----------------------Kernel-Command-Line:--------------------------\n' \
"${SLX_INITIAL_KERNEL_COMMAND_LINE}\n" \
'----------------------------------------------------------------------'
for parameter in $(getargs BOOTIF=); do
info "PXE given boot interface $parameter"
dracut_interface_name="bootnet:$(echo $parameter | \
sed --regexp-extended 's/.{2}[:\-]((.{2}[:\-]){5}.{2})/\1/' | \
sed s/-/:/g)"
info "Dracut interface name is: $dracut_interface_name"
echo -n " ifname=$dracut_interface_name" >> \
"${writeable_proc_cmdline_path}cmdline"
done
for parameter in $(getargs ip=); do
temp="$parameter:"
set --
while [ -n "$temp" ]; do
set -- "$@" "${temp%%:*}"
temp=${temp#*:}
done
[ -n "$1" ] && ip=$1
[ -n "$2" ] && server_ip=$2
[ -n "$3" ] && gateway_ip=$3
[ -n "$4" ] && net_mask=$4
info "PXE given net configuration: ip: $ip server_ip: $server_ip gateway_ip: $gateway_ip net_mask: $net_mask"
dracut_ip_configuration="$ip::$gateway_ip:$net_mask::bootnet:off"
info "Dracut ip configuration is: $dracut_ip_configuration"
sed --regexp-extended "s/ip=[^ ]*/ip=$dracut_ip_configuration/g" \
--in-place "${writeable_proc_cmdline_path}cmdline"
done
if [ -z "$dracut_ip_configuration" ]; then
warn 'No "ip" parameter found in the kernel command line.'
fi
if [ -z "$dracut_interface_name" ]; then
warn 'No "BOOTIF" parameter found in the kernel command line.'
fi
mount --options bind "${writeable_proc_cmdline_path}cmdline" /proc/cmdline
if [ -z $(getargs "$SLX_SERVER") ]; then
warn 'No "slxsrv" parameter found in the kernel command line.'
exit 1
fi
if [ -z $(getargs "$SLX_SERVER_BASE") ]; then
warn 'No "slxbase" parameter found in the kernel command line.'
exit 1
fi
echo '-----------------------Dracut-Kernel-Command-Line:----------------------'
cat /proc/cmdline
echo '------------------------------------------------------------------------'
) || exit $?
# region vim modline
# vim: set tabstop=4 shiftwidth=4 expandtab:
# vim: foldmethod=marker foldmarker=region,endregion:
# endregion
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