# platform = multi_platform_debian,multi_platform_fedora,multi_platform_ol,multi_platform_rhel,multi_platform_rhv,multi_platform_sle,multi_platform_slmicro,multi_platform_ubuntu,multi_platform_almalinux


if /bin/false ; then
    KARGS_DIR="/usr/lib/bootc/kargs.d/"
    if grep -q -E "page_poison" "$KARGS_DIR/*.toml" ; then
        sed -i -E "s/^(\s*kargs\s*=\s*\[.*)\"page_poison=[^\"]*\"(.*]\s*)/\1\"page_poison=1\"\2/" "$KARGS_DIR/*.toml"
    else
        echo "kargs = [\"page_poison=1\"]" >> "$KARGS_DIR/10-page_poison.toml"
    fi
else


    # Correct the form of default kernel command line in GRUB
    if grep -q '^\s*GRUB_CMDLINE_LINUX=.*page_poison=.*"'  '/etc/default/grub' ; then
           # modify the GRUB command-line if an page_poison= arg already exists
           sed -i "s/\(^\s*GRUB_CMDLINE_LINUX=\".*\)page_poison=[^[:space:]]\+\(.*\"\)/\1page_poison=1\2/"  '/etc/default/grub'
    # Add to already existing GRUB_CMDLINE_LINUX parameters
    elif grep -q '^\s*GRUB_CMDLINE_LINUX='  '/etc/default/grub' ; then
           # no page_poison=arg is present, append it
           sed -i "s/\(^\s*GRUB_CMDLINE_LINUX=\".*\)\"/\1 page_poison=1\"/"  '/etc/default/grub'
    # Add GRUB_CMDLINE_LINUX parameters line
    else
           echo "GRUB_CMDLINE_LINUX=\"page_poison=1\"" >> '/etc/default/grub'
    fi
    update-grub 

fi