1 files changed, 75 insertions, 0 deletions
diff --git a/builder/dnbd3-rootfs/hooks/prepare-kernel-command-line-parameter.sh b/builder/dnbd3-rootfs/hooks/prepare-kernel-command-line-parameter.sh
new file mode 100755
index 00000000..4c388178
--- /dev/null
+++ b/builder/dnbd3-rootfs/hooks/prepare-kernel-command-line-parameter.sh
@@ -0,0 +1,75 @@
+#!/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 slxsrv=) ]; then
+    warn 'No "slxsrv" parameter found in the kernel command line.'
+    exit 1
+fi
+if [ -z $(getargs slxbase=) ]; 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