Revert "Generate /etc/kernel/cmdline if it does not exist"

This reverts commit 77693cd7eb.

Although it fixes the situation when a new kernel is being installed in
a %post script, it breaks the initial kernel installation, because the
BLS snippet doesn't exists yet.

20-zipl-kernel.install

@@ -76,24 +76,16 @@ case "$COMMAND" in
 
         if [[ ! -f /sbin/new-kernel-pkg || -d "${BLS_DIR}" ]]; then
             declare -a BOOT_OPTIONS
-            if [[ ! -f /etc/kernel/cmdline ]]; then
-                last=''
-                for entry in "${BLS_DIR}"/*.conf; do
-                    last="$entry"
-                done
-                if [[ ! -z "$last" ]]; then
-                    args="$(awk '/options/{$1="";$0=$0;$1=$1;print}' $last)"
-                    echo "$args" > /etc/kernel/cmdline
-                fi
-            fi
             if [[ -f /etc/kernel/cmdline ]]; then
                 read -r -d '' -a BOOT_OPTIONS < /etc/kernel/cmdline
             fi
 
             if ! [[ ${BOOT_OPTIONS[*]} ]]; then
-                echo "Could not determine the kernel command line parameters." >&2
+                read -r -d '' -a line < /proc/cmdline
-                echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2
+                for i in "${line[@]}"; do
-                exit 1
+                    [[ "${i#initrd=*}" != "$i" || "${i#BOOT_IMAGE=*}" != "$i" ]] && continue
+                    BOOT_OPTIONS+=("$i")
+                done
             fi
 
             [[ -d "$BLS_DIR" ]] || mkdir -m 0700 -p "$BLS_DIR"

s390utils.spec

@@ -10,7 +10,7 @@
 Name:           s390utils
 Summary:        Utilities and daemons for IBM z Systems
 Version:        2.25.0
-Release:        2%{?dist}
+Release:        3%{?dist}
 Epoch:          2
 License:        MIT
 ExclusiveArch:  s390 s390x
@@ -907,6 +907,9 @@ User-space development files for the s390/s390x architecture.
 
 
 %changelog
+* Mon Jan 23 2023 Dan Horák <dan[at]danny.cz> - 2:2.25.0-3
+- revert the kernel install script change
+
 * Thu Jan 19 2023 Dan Horák <dan[at]danny.cz> - 2:2.25.0-2
 - update kernel install script to write /etc/kernel/cmdline