Contents of /trunk/grubby/grubby-bls

#!/bin/bash
#
# grubby wrapper to manage BootLoaderSpec files
#
#
# Copyright 2018 Red Hat, Inc.  All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

readonly SCRIPTNAME="${0##*/}"

CMDLINE_LINUX_DEBUG=" systemd.log_level=debug systemd.log_target=kmsg"
LINUX_DEBUG_VERSION_POSTFIX="_with_debugging"
LINUX_DEBUG_TITLE_POSTFIX=" with debugging"

declare -a bls_file
declare -a bls_title
declare -a bls_version
declare -a bls_linux
declare -a bls_initrd
declare -a bls_options
declare -a bls_id

[[ -f /etc/sysconfig/kernel ]] && . /etc/sysconfig/kernel
[[ -f /etc/os-release ]] && . /etc/os-release
read MACHINE_ID < /etc/machine-id
arch=$(uname -m)

if [[ $arch = 's390' || $arch = 's390x' ]]; then
    bootloader="zipl"
else
    bootloader="grub2"
fi

print_error() {
    echo "$1" >&2
    exit 1
}

if [[ ${#} = 0 ]]; then
    print_error "no action specified"
fi

get_bls_value() {
    local bls="$1" && shift
    local key="$1" && shift

    echo "$(grep "^${key}[ \t]" "${bls}" | sed -e "s!^${key}[ \t]*!!")"
}

set_bls_value() {
    local bls="$1" && shift
    local key="$1" && shift
    local value="$1" && shift

    sed -i -e "s!^${key}.*!${key} ${value}!" "${bls}"
}

append_bls_value() {
    local bls="$1" && shift
    local key="$1" && shift
    local value="$1" && shift

    old_value="$(get_bls_value ${bls} ${key})"
    set_bls_value "${bls}" "${key}" "${old_value}${value}"
}

get_bls_values() {
    count=0
    for bls in $(ls -vr ${blsdir}/*.conf 2> /dev/null); do
        bls_file[$count]="${bls}"
        bls_title[$count]="$(get_bls_value ${bls} title)"
        bls_version[$count]="$(get_bls_value ${bls} version)"
        bls_linux[$count]="$(get_bls_value ${bls} linux)"
        bls_initrd[$count]="$(get_bls_value ${bls} initrd)"
        bls_options[$count]="$(get_bls_value ${bls} options)"
        bls_id[$count]="$(get_bls_value ${bls} id)"

        count=$((count+1))
    done
}

get_default_index() {
    local default=""
    local index="-1"
    local title=""
    local version=""
    if [[ $bootloader = "grub2" ]]; then
	default="$(grep '^saved_entry=' ${env} | sed -e 's/^saved_entry=//')"
    else
	default="$(grep '^default=' ${zipl_config} | sed -e 's/^default=//')"
    fi

    if [[ -z $default ]]; then
	index=0
    elif [[ $default =~ ^[0-9]+$ ]]; then
	index="$default"
    fi

    # GRUB2 and zipl use different fields to set the default entry
    if [[ $bootloader = "grub2" ]]; then
	title="$default"
    else
	version="$default"
    fi

    for i in ${!bls_file[@]}; do
        if [[ $title = ${bls_title[$i]} || $version = ${bls_version[$i]} ||
           $i -eq $index ]]; then
            echo $i
            return
        fi
    done
}

display_default_value() {
    case "$display_default" in
        kernel)
            echo "${bls_linux[$default_index]}"
            exit 0
            ;;
        index)
            echo "$default_index"
            exit 0
            ;;
        title)
            echo "${bls_title[$default_index]}"
            exit 0
            ;;
    esac
}

param_to_indexes() {
    local param="$1"
    local indexes=""

    if [[ $param = "ALL" ]]; then
        for i in ${!bls_file[@]}; do
            indexes="$indexes $i"
        done
        echo -n $indexes
        return
    fi

    if [[ $param = "DEFAULT" ]]; then
        echo -n $default_index
        return
    fi

    for i in ${!bls_file[@]}; do
        if [[ $param = "${bls_linux[$i]}" || "/${param##*/}" = "${bls_linux[$i]}" ]]; then
            indexes="$indexes $i"
        fi

        if [[ $param = "TITLE=${bls_title[$i]}" ]]; then
            indexes="$indexes $i"
        fi

	if [[ $param = $i ]]; then
	    indexes="$indexes $i"
	fi
    done

    if [[ -n $indexes ]]; then
        echo -n $indexes
        return
    fi

    echo -n "-1"
}

display_info_values() {
    local indexes=($(param_to_indexes "$1"))

    for i in ${indexes[*]}; do
        echo "index=$i"
        echo "kernel=${bls_linux[$i]}"
        echo "args=\"${bls_options[$i]}\""
        echo "initrd=${bls_initrd[$i]}"
        echo "title=${bls_title[$i]}"
    done
    exit 0
}

mkbls() {
    local kernel=$1 && shift
    local kernelver=$1 && shift
    local datetime=$1 && shift

    local debugname=""
    local flavor=""

    if [[ $kernelver == *\+* ]] ; then
        local flavor=-"${kernelver##*+}"
        if [[ $flavor == "-debug" ]]; then
            local debugname="with debugging"
	    local debugid="-debug"
        fi
    fi

    cat <<EOF
title ${NAME} (${kernelver}) ${VERSION}${debugname}
version ${kernelver}${debugid}
linux ${kernel}
initrd /initramfs-${kernelver}.img
options \$kernelopts
id ${ID}-${datetime}-${kernelver}${debugid}
grub_users \$grub_users
grub_arg --unrestricted
grub_class kernel${flavor}
EOF
}

remove_bls_fragment() {
    local indexes=($(param_to_indexes "$1"))

    if [[ $indexes = "-1" ]]; then
	print_error "The param $1 is incorrect"
    fi

    for i in ${indexes[*]}; do
        rm -f "${bls_file[$i]}"
    done

    get_bls_values

    update_grubcfg
}

add_bls_fragment() {
    local kernel="$1" && shift
    local title="$1" && shift
    local options="$1" && shift
    local initrd="$1" && shift
    local extra_initrd="$1" && shift

    if [[ $kernel = *"vmlinuz-"* ]]; then
	kernelver="${kernel##*/vmlinuz-}"
	prefix="vmlinuz-"
    else
	kernelver="${kernel##*/}"
    fi

    if [[ ! -f "/boot/${prefix}${kernelver}" ]] &&
       [[ $bad_image != "true" ]]; then
        print_error "The ${kernelver} kernel isn't installed in the machine"
    fi

    if [[ -z $title ]]; then
	print_error "The kernel title must be specified"
    fi

    if [[ ! -d $blsdir ]]; then
        install -m 700 -d "${blsdir}"
    fi

    bls_target="${blsdir}/${MACHINE_ID}-${kernelver}.conf"
    kernel_dir="/lib/modules/${kernelver}"
    if [[ -f "${kernel_dir}/bls.conf" ]]; then
        cp -aT "${kernel_dir}/bls.conf" "${bls_target}" || exit $?
    else
	if [[ -d $kernel_dir ]]; then
	    datetime="$(date -u +%Y%m%d%H%M%S -d "$(stat -c '%y' "${kernel_dir}")")"
	else
	    datetime=0
	fi
        mkbls "${kernel}" "${kernelver}" "${datetime}" > "${bls_target}"
    fi

    if [[ -n $title ]]; then
        set_bls_value "${bls_target}" "title" "${title}"
    fi

    if [[ -n $options ]]; then
        set_bls_value "${bls_target}" "options" "${options}"
    fi

    if [[ -n $initrd ]]; then
        set_bls_value "${bls_target}" "initrd" "${initrd}"
    fi

    if [[ -n $extra_initrd ]]; then
        append_bls_value "${bls_target}" "initrd" "${extra_initrd}"
    fi

    if [[ $MAKEDEBUG = "yes" ]]; then
        arch="$(uname -m)"
        bls_debug="$(echo ${bls_target} | sed -e "s/\.${arch}/-debug.${arch}/")"
        cp -aT  "${bls_target}" "${bls_debug}"
        append_bls_value "${bls_debug}" "title" "${LINUX_DEBUG_TITLE_POSTFIX}"
        append_bls_value "${bls_debug}" "version" "${LINUX_DEBUG_VERSION_POSTFIX}"
        append_bls_value "${bls_debug}" "options" "${CMDLINE_LINUX_DEBUG}"
        blsid="$(get_bls_value ${bls_debug} "id" | sed -e "s/\.${arch}/-debug.${arch}/")"
        set_bls_value "${bls_debug}" "id" "${blsid}"
    fi

    get_bls_values

    if [[ $make_default = "true" ]]; then
        set_default_bls "TITLE=${title}"
    fi

    update_grubcfg

    exit 0
}

update_args() {
    local args=$1 && shift
    local remove_args=($1) && shift
    local add_args=($1) && shift

    for arg in ${remove_args[*]}; do
        args="$(echo $args | sed -e "s!$arg[^ ]*!!")"
    done

    for arg in ${add_args[*]}; do
        if [[ $arg = *"="* ]]; then
            value=${arg##*=}
            key=${arg%%=$value}
            exist=$(echo $args | grep "${key}=")
            if [[ -n $exist ]]; then
                args="$(echo $args | sed -e "s!$key=[^ ]*!$key=$value!")"
            else
                args="$args $key=$value"
            fi
        else
            exist=$(echo $args | grep $arg)
            if ! [[ -n $exist ]]; then
                args="$args $arg"
            fi
        fi
    done

    echo ${args}
}

update_bls_fragment() {
    local indexes=($(param_to_indexes "$1")) && shift
    local remove_args=$1 && shift
    local add_args=$1 && shift
    local initrd=$1 && shift

    for i in ${indexes[*]}; do
	if [[ -n $remove_args || -n $add_args ]]; then
            local new_args="$(update_args "${bls_options[$i]}" "${remove_args}" "${add_args}")"
            set_bls_value "${bls_file[$i]}" "options" "${new_args}"
	fi

	if [[ -n $initrd ]]; then
	    set_bls_value "${bls_file[$i]}" "initrd" "${initrd}"
	fi
    done

    update_grubcfg
}

set_default_bls() {
    local index=($(param_to_indexes "$1"))

    if [[ $bootloader = grub2 ]]; then
        grub2-editenv "${env}" set saved_entry="${bls_title[$index]}"
    else
        local default="${bls_version[$index]}"
        local current="$(grep '^default=' ${zipl_config} | sed -e 's/^default=//')"
        if [[ -n $current ]]; then
            sed -i -e "s,^default=.*,default=${default}," "${zipl_config}"
        else
            echo "default=${default}" >> "${zipl_config}"
        fi
    fi
}

remove_var_prefix() {
    if [[ -n $remove_kernel && $remove_kernel =~ ^/ ]]; then
       remove_kernel="/${remove_kernel##*/}"
    fi

    if [[ -n $initrd ]]; then
	initrd="/${initrd##*/}"
    fi

    if [[ -n $extra_initrd ]]; then
	extra_initrd=" /${extra_initrd##*/}"
    fi

    if [[ -n $kernel ]]; then
	kernel="/${kernel##*/}"
    fi

    if [[ -n $update_kernel && $update_kernel =~ ^/ ]]; then
	update_kernel="/${update_kernel##*/}"
    fi
}

update_grubcfg()
{
    if [[ $arch = 'ppc64' || $arch = 'ppc64le' ]]; then
	grub2-mkconfig -o /boot/grub2/grub.cfg >& /dev/null
    fi
}

print_usage()
{
    cat <<EOF
Usage: grubby [OPTION...]
      --add-kernel=kernel-path            add an entry for the specified kernel
      --args=args                         default arguments for the new kernel or new arguments for kernel being updated)
      --bad-image-okay                    don't sanity check images in boot entries (for testing only)
  -c, --config-file=path                  path to grub config file to update ("-" for stdin)
      --copy-default                      use the default boot entry as a template for the new entry being added; if the default is not a linux image, or if the kernel referenced by the default image does not exist, the
                                          first linux entry whose kernel does exist is used as the template
      --default-kernel                    display the path of the default kernel
      --default-index                     display the index of the default kernel
      --default-title                     display the title of the default kernel
      --env=path                          path for environment data
      --grub2                             configure grub2 bootloader
      --info=kernel-path                  display boot information for specified kernel
      --initrd=initrd-path                initrd image for the new kernel
  -i, --extra-initrd=initrd-path          auxiliary initrd image for things other than the new kernel
      --make-default                      make the newly added entry the default boot entry
  -o, --output-file=path                  path to output updated config file ("-" for stdout)
      --remove-args=STRING                remove kernel arguments
      --remove-kernel=kernel-path         remove all entries for the specified kernel
      --set-default=kernel-path           make the first entry referencing the specified kernel the default
      --set-default-index=entry-index     make the given entry index the default entry
      --title=entry-title                 title to use for the new kernel entry
      --update-kernel=kernel-path         updated information for the specified kernel
      --zipl                              configure zipl bootloader
  -b, --bls-directory                     path to directory containing the BootLoaderSpec fragment files

Help options:
  -?, --help                              Show this help message

EOF
}

OPTS="$(getopt -o c:i:o:b:? --long help,add-kernel:,args:,bad-image-okay,\
config-file:,copy-default,default-kernel,default-index,default-title,env:,\
grub2,info:,initrd:,extra-initrd:,make-default,output-file:,remove-args:,\
remove-kernel:,set-default:,set-default-index:,title:,update-kernel:,zipl,\
bls-directory:,add-kernel:,add-multiboot:,mbargs:,mounts:,boot-filesystem:,\
bootloader-probe,debug,devtree,devtreedir:,elilo,efi,extlinux,grub,lilo,\
output-file:,remove-mbargs:,remove-multiboot:,silo,yaboot -n ${SCRIPTNAME} -- "$@")"

[[ $? = 0 ]] || exit 1

eval set -- "$OPTS"

while [ ${#} -gt 0 ]; do
    case "$1" in
        --help|-h)
            print_usage
            exit 0
            ;;
        --add-kernel)
            kernel="${2}"
            shift
            ;;
        --args)
            args="${2}"
            shift
            ;;
        --bad-image-okay)
            bad_image=true
            ;;
        --config-file|-c)
            zipl_config="${2}"
            shift
            ;;
        --copy-default)
            copy_default=true
            ;;
        --default-kernel)
            display_default="kernel"
            ;;
        --default-index)
            display_default="index"
            ;;
        --default-title)
            display_default="title"
            ;;
        --env)
            env="${2}"
            shift
            ;;
        --grub2)
            bootloader="grub2"
            ;;
        --info)
            display_info="${2}"
            shift
            ;;
        --initrd)
            initrd="${2}"
            shift
            ;;
        --extra-initrd|-i)
            extra_initrd=" /${2}"
            shift
            ;;
        --make-default)
            make_default=true
            ;;
        --output-file|-o)
            output_file="${2}"
            shift
            ;;
        --remove-args)
            remove_args="${2}"
            shift
            ;;
        --remove-kernel)
            remove_kernel="${2}"
            shift
            ;;
        --set-default)
            set_default="${2}"
            shift
            ;;
        --set-default-index)
            set_default="${2}"
            shift
            ;;
        --title)
            title="${2}"
            shift
            ;;
        --update-kernel)
            update_kernel="${2}"
            shift
            ;;
        --zipl)
            bootloader="zipl"
            ;;
        --bls-directory|-b)
            blsdir="${2}"
	    shift
	    ;;
        --add-kernel|--add-multiboot|--mbargs|--mounts|--boot-filesystem|\
        --bootloader-probe|--debug|--devtree|--devtreedir|--elilo|--efi|\
        --extlinux|--grub|--lilo|--output-file|--remove-mbargs|--silo|\
        --remove-multiboot|--slilo|--yaboot)
            echo
            echo "${SCRIPTNAME}: the option \"${1}\" was deprecated" >&2
            echo "Try '${SCRIPTNAME} --help' to list supported options" >&2
            echo
	    exit 1
	    ;;
        --)
            shift
            break
            ;;
        *)
            echo
            echo "${SCRIPTNAME}: invalid option \"${1}\"" >&2
            echo "Try '${SCRIPTNAME} --help' for more information" >&2
            echo
            exit 1
            ;;
    esac
    shift
done

if [[ -z $blsdir ]]; then
    blsdir="/boot/loader/entries"
fi

if [[ -z $env ]]; then
    env="/boot/grub2/grubenv"
fi

if [[ -z $zipl_config ]]; then
    zipl_config="/etc/zipl.conf"
fi

get_bls_values

default_index="$(get_default_index)"

if [[ -n $display_default ]]; then
    display_default_value
fi

if [[ -n $display_info ]]; then
    display_info_values "${display_info}"
fi

if [[ $bootloader = grub2 ]]; then
    remove_var_prefix
fi

if [[ -n $kernel ]]; then
    if [[ $copy_default = "true" ]]; then
	opts="${bls_options[$default_index]}"
	if [[ -n $args ]]; then
	    opts="${opts} ${args}"
	fi
    else
	opts="${args}"
    fi

    add_bls_fragment "${kernel}" "${title}" "${opts}" "${initrd}" \
                     "${extra_initrd}"
fi

if [[ -n $remove_kernel ]]; then
    remove_bls_fragment "${remove_kernel}"
fi

if [[ -n $update_kernel ]]; then
    update_bls_fragment "${update_kernel}" "${remove_args}" "${args}" "${initrd}"
fi

if [[ -n $set_default ]]; then
    set_default_bls "${set_default}"
fi

exit 0
1	#!/bin/bash
2	#
3	# grubby wrapper to manage BootLoaderSpec files
4	#
5	#
6	# Copyright 2018 Red Hat, Inc. All rights reserved.
7	#
8	# This program is free software; you can redistribute it and/or modify
9	# it under the terms of the GNU General Public License as published by
10	# the Free Software Foundation; either version 2 of the License, or
11	# (at your option) any later version.
12	#
13	# This program is distributed in the hope that it will be useful,
14	# but WITHOUT ANY WARRANTY; without even the implied warranty of
15	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	# GNU General Public License for more details.
17	#
18	# You should have received a copy of the GNU General Public License
19	# along with this program. If not, see <http://www.gnu.org/licenses/>.
20
21	readonly SCRIPTNAME="${0##*/}"
22
23	CMDLINE_LINUX_DEBUG=" systemd.log_level=debug systemd.log_target=kmsg"
24	LINUX_DEBUG_VERSION_POSTFIX="_with_debugging"
25	LINUX_DEBUG_TITLE_POSTFIX=" with debugging"
26
27	declare -a bls_file
28	declare -a bls_title
29	declare -a bls_version
30	declare -a bls_linux
31	declare -a bls_initrd
32	declare -a bls_options
33	declare -a bls_id
34
35	[[ -f /etc/sysconfig/kernel ]] && . /etc/sysconfig/kernel
36	[[ -f /etc/os-release ]] && . /etc/os-release
37	read MACHINE_ID < /etc/machine-id
38	arch=$(uname -m)
39
40	if [[ $arch = 's390' \|\| $arch = 's390x' ]]; then
41	bootloader="zipl"
42	else
43	bootloader="grub2"
44	fi
45
46	print_error() {
47	echo "$1" >&2
48	exit 1
49	}
50
51	if [[ ${#} = 0 ]]; then
52	print_error "no action specified"
53	fi
54
55	get_bls_value() {
56	local bls="$1" && shift
57	local key="$1" && shift
58
59	echo "$(grep "^${key}[ \t]" "${bls}" \| sed -e "s!^${key}[ \t]*!!")"
60	}
61
62	set_bls_value() {
63	local bls="$1" && shift
64	local key="$1" && shift
65	local value="$1" && shift
66
67	sed -i -e "s!^${key}.*!${key} ${value}!" "${bls}"
68	}
69
70	append_bls_value() {
71	local bls="$1" && shift
72	local key="$1" && shift
73	local value="$1" && shift
74
75	old_value="$(get_bls_value ${bls} ${key})"
76	set_bls_value "${bls}" "${key}" "${old_value}${value}"
77	}
78
79	get_bls_values() {
80	count=0
81	for bls in $(ls -vr ${blsdir}/*.conf 2> /dev/null); do
82	bls_file[$count]="${bls}"
83	bls_title[$count]="$(get_bls_value ${bls} title)"
84	bls_version[$count]="$(get_bls_value ${bls} version)"
85	bls_linux[$count]="$(get_bls_value ${bls} linux)"
86	bls_initrd[$count]="$(get_bls_value ${bls} initrd)"
87	bls_options[$count]="$(get_bls_value ${bls} options)"
88	bls_id[$count]="$(get_bls_value ${bls} id)"
89
90	count=$((count+1))
91	done
92	}
93
94	get_default_index() {
95	local default=""
96	local index="-1"
97	local title=""
98	local version=""
99	if [[ $bootloader = "grub2" ]]; then
100	default="$(grep '^saved_entry=' ${env} \| sed -e 's/^saved_entry=//')"
101	else
102	default="$(grep '^default=' ${zipl_config} \| sed -e 's/^default=//')"
103	fi
104
105	if [[ -z $default ]]; then
106	index=0
107	elif [[ $default =~ ^[0-9]+$ ]]; then
108	index="$default"
109	fi
110
111	# GRUB2 and zipl use different fields to set the default entry
112	if [[ $bootloader = "grub2" ]]; then
113	title="$default"
114	else
115	version="$default"
116	fi
117
118	for i in ${!bls_file[@]}; do
119	if [[ $title = ${bls_title[$i]} \|\| $version = ${bls_version[$i]} \|\|
120	$i -eq $index ]]; then
121	echo $i
122	return
123	fi
124	done
125	}
126
127	display_default_value() {
128	case "$display_default" in
129	kernel)
130	echo "${bls_linux[$default_index]}"
131	exit 0
132	;;
133	index)
134	echo "$default_index"
135	exit 0
136	;;
137	title)
138	echo "${bls_title[$default_index]}"
139	exit 0
140	;;
141	esac
142	}
143
144	param_to_indexes() {
145	local param="$1"
146	local indexes=""
147
148	if [[ $param = "ALL" ]]; then
149	for i in ${!bls_file[@]}; do
150	indexes="$indexes $i"
151	done
152	echo -n $indexes
153	return
154	fi
155
156	if [[ $param = "DEFAULT" ]]; then
157	echo -n $default_index
158	return
159	fi
160
161	for i in ${!bls_file[@]}; do
162	if [[ $param = "${bls_linux[$i]}" \|\| "/${param##*/}" = "${bls_linux[$i]}" ]]; then
163	indexes="$indexes $i"
164	fi
165
166	if [[ $param = "TITLE=${bls_title[$i]}" ]]; then
167	indexes="$indexes $i"
168	fi
169
170	if [[ $param = $i ]]; then
171	indexes="$indexes $i"
172	fi
173	done
174
175	if [[ -n $indexes ]]; then
176	echo -n $indexes
177	return
178	fi
179
180	echo -n "-1"
181	}
182
183	display_info_values() {
184	local indexes=($(param_to_indexes "$1"))
185
186	for i in ${indexes[*]}; do
187	echo "index=$i"
188	echo "kernel=${bls_linux[$i]}"
189	echo "args=\"${bls_options[$i]}\""
190	echo "initrd=${bls_initrd[$i]}"
191	echo "title=${bls_title[$i]}"
192	done
193	exit 0
194	}
195
196	mkbls() {
197	local kernel=$1 && shift
198	local kernelver=$1 && shift
199	local datetime=$1 && shift
200
201	local debugname=""
202	local flavor=""
203
204	if [[ $kernelver == \+ ]] ; then
205	local flavor=-"${kernelver##*+}"
206	if [[ $flavor == "-debug" ]]; then
207	local debugname="with debugging"
208	local debugid="-debug"
209	fi
210	fi
211
212	cat <<EOF
213	title ${NAME} (${kernelver}) ${VERSION}${debugname}
214	version ${kernelver}${debugid}
215	linux ${kernel}
216	initrd /initramfs-${kernelver}.img
217	options \$kernelopts
218	id ${ID}-${datetime}-${kernelver}${debugid}
219	grub_users \$grub_users
220	grub_arg --unrestricted
221	grub_class kernel${flavor}
222	EOF
223	}
224
225	remove_bls_fragment() {
226	local indexes=($(param_to_indexes "$1"))
227
228	if [[ $indexes = "-1" ]]; then
229	print_error "The param $1 is incorrect"
230	fi
231
232	for i in ${indexes[*]}; do
233	rm -f "${bls_file[$i]}"
234	done
235
236	get_bls_values
237
238	update_grubcfg
239	}
240
241	add_bls_fragment() {
242	local kernel="$1" && shift
243	local title="$1" && shift
244	local options="$1" && shift
245	local initrd="$1" && shift
246	local extra_initrd="$1" && shift
247
248	if [[ $kernel = "vmlinuz-" ]]; then
249	kernelver="${kernel##*/vmlinuz-}"
250	prefix="vmlinuz-"
251	else
252	kernelver="${kernel##*/}"
253	fi
254
255	if [[ ! -f "/boot/${prefix}${kernelver}" ]] &&
256	[[ $bad_image != "true" ]]; then
257	print_error "The ${kernelver} kernel isn't installed in the machine"
258	fi
259
260	if [[ -z $title ]]; then
261	print_error "The kernel title must be specified"
262	fi
263
264	if [[ ! -d $blsdir ]]; then
265	install -m 700 -d "${blsdir}"
266	fi
267
268	bls_target="${blsdir}/${MACHINE_ID}-${kernelver}.conf"
269	kernel_dir="/lib/modules/${kernelver}"
270	if [[ -f "${kernel_dir}/bls.conf" ]]; then
271	cp -aT "${kernel_dir}/bls.conf" "${bls_target}" \|\| exit $?
272	else
273	if [[ -d $kernel_dir ]]; then
274	datetime="$(date -u +%Y%m%d%H%M%S -d "$(stat -c '%y' "${kernel_dir}")")"
275	else
276	datetime=0
277	fi
278	mkbls "${kernel}" "${kernelver}" "${datetime}" > "${bls_target}"
279	fi
280
281	if [[ -n $title ]]; then
282	set_bls_value "${bls_target}" "title" "${title}"
283	fi
284
285	if [[ -n $options ]]; then
286	set_bls_value "${bls_target}" "options" "${options}"
287	fi
288
289	if [[ -n $initrd ]]; then
290	set_bls_value "${bls_target}" "initrd" "${initrd}"
291	fi
292
293	if [[ -n $extra_initrd ]]; then
294	append_bls_value "${bls_target}" "initrd" "${extra_initrd}"
295	fi
296
297	if [[ $MAKEDEBUG = "yes" ]]; then
298	arch="$(uname -m)"
299	bls_debug="$(echo ${bls_target} \| sed -e "s/\.${arch}/-debug.${arch}/")"
300	cp -aT "${bls_target}" "${bls_debug}"
301	append_bls_value "${bls_debug}" "title" "${LINUX_DEBUG_TITLE_POSTFIX}"
302	append_bls_value "${bls_debug}" "version" "${LINUX_DEBUG_VERSION_POSTFIX}"
303	append_bls_value "${bls_debug}" "options" "${CMDLINE_LINUX_DEBUG}"
304	blsid="$(get_bls_value ${bls_debug} "id" \| sed -e "s/\.${arch}/-debug.${arch}/")"
305	set_bls_value "${bls_debug}" "id" "${blsid}"
306	fi
307
308	get_bls_values
309
310	if [[ $make_default = "true" ]]; then
311	set_default_bls "TITLE=${title}"
312	fi
313
314	update_grubcfg
315
316	exit 0
317	}
318
319	update_args() {
320	local args=$1 && shift
321	local remove_args=($1) && shift
322	local add_args=($1) && shift
323
324	for arg in ${remove_args[*]}; do
325	args="$(echo $args \| sed -e "s!$arg[^ ]*!!")"
326	done
327
328	for arg in ${add_args[*]}; do
329	if [[ $arg = "=" ]]; then
330	value=${arg##*=}
331	key=${arg%%=$value}
332	exist=$(echo $args \| grep "${key}=")
333	if [[ -n $exist ]]; then
334	args="$(echo $args \| sed -e "s!$key=[^ ]*!$key=$value!")"
335	else
336	args="$args $key=$value"
337	fi
338	else
339	exist=$(echo $args \| grep $arg)
340	if ! [[ -n $exist ]]; then
341	args="$args $arg"
342	fi
343	fi
344	done
345
346	echo ${args}
347	}
348
349	update_bls_fragment() {
350	local indexes=($(param_to_indexes "$1")) && shift
351	local remove_args=$1 && shift
352	local add_args=$1 && shift
353	local initrd=$1 && shift
354
355	for i in ${indexes[*]}; do
356	if [[ -n $remove_args \|\| -n $add_args ]]; then
357	local new_args="$(update_args "${bls_options[$i]}" "${remove_args}" "${add_args}")"
358	set_bls_value "${bls_file[$i]}" "options" "${new_args}"
359	fi
360
361	if [[ -n $initrd ]]; then
362	set_bls_value "${bls_file[$i]}" "initrd" "${initrd}"
363	fi
364	done
365
366	update_grubcfg
367	}
368
369	set_default_bls() {
370	local index=($(param_to_indexes "$1"))
371
372	if [[ $bootloader = grub2 ]]; then
373	grub2-editenv "${env}" set saved_entry="${bls_title[$index]}"
374	else
375	local default="${bls_version[$index]}"
376	local current="$(grep '^default=' ${zipl_config} \| sed -e 's/^default=//')"
377	if [[ -n $current ]]; then
378	sed -i -e "s,^default=.*,default=${default}," "${zipl_config}"
379	else
380	echo "default=${default}" >> "${zipl_config}"
381	fi
382	fi
383	}
384
385	remove_var_prefix() {
386	if [[ -n $remove_kernel && $remove_kernel =~ ^/ ]]; then
387	remove_kernel="/${remove_kernel##*/}"
388	fi
389
390	if [[ -n $initrd ]]; then
391	initrd="/${initrd##*/}"
392	fi
393
394	if [[ -n $extra_initrd ]]; then
395	extra_initrd=" /${extra_initrd##*/}"
396	fi
397
398	if [[ -n $kernel ]]; then
399	kernel="/${kernel##*/}"
400	fi
401
402	if [[ -n $update_kernel && $update_kernel =~ ^/ ]]; then
403	update_kernel="/${update_kernel##*/}"
404	fi
405	}
406
407	update_grubcfg()
408	{
409	if [[ $arch = 'ppc64' \|\| $arch = 'ppc64le' ]]; then
410	grub2-mkconfig -o /boot/grub2/grub.cfg >& /dev/null
411	fi
412	}
413
414	print_usage()
415	{
416	cat <<EOF
417	Usage: grubby [OPTION...]
418	--add-kernel=kernel-path add an entry for the specified kernel
419	--args=args default arguments for the new kernel or new arguments for kernel being updated)
420	--bad-image-okay don't sanity check images in boot entries (for testing only)
421	-c, --config-file=path path to grub config file to update ("-" for stdin)
422	--copy-default use the default boot entry as a template for the new entry being added; if the default is not a linux image, or if the kernel referenced by the default image does not exist, the
423	first linux entry whose kernel does exist is used as the template
424	--default-kernel display the path of the default kernel
425	--default-index display the index of the default kernel
426	--default-title display the title of the default kernel
427	--env=path path for environment data
428	--grub2 configure grub2 bootloader
429	--info=kernel-path display boot information for specified kernel
430	--initrd=initrd-path initrd image for the new kernel
431	-i, --extra-initrd=initrd-path auxiliary initrd image for things other than the new kernel
432	--make-default make the newly added entry the default boot entry
433	-o, --output-file=path path to output updated config file ("-" for stdout)
434	--remove-args=STRING remove kernel arguments
435	--remove-kernel=kernel-path remove all entries for the specified kernel
436	--set-default=kernel-path make the first entry referencing the specified kernel the default
437	--set-default-index=entry-index make the given entry index the default entry
438	--title=entry-title title to use for the new kernel entry
439	--update-kernel=kernel-path updated information for the specified kernel
440	--zipl configure zipl bootloader
441	-b, --bls-directory path to directory containing the BootLoaderSpec fragment files
442
443	Help options:
444	-?, --help Show this help message
445
446	EOF
447	}
448
449	OPTS="$(getopt -o c:i:o:b:? --long help,add-kernel:,args:,bad-image-okay,\
450	config-file:,copy-default,default-kernel,default-index,default-title,env:,\
451	grub2,info:,initrd:,extra-initrd:,make-default,output-file:,remove-args:,\
452	remove-kernel:,set-default:,set-default-index:,title:,update-kernel:,zipl,\
453	bls-directory:,add-kernel:,add-multiboot:,mbargs:,mounts:,boot-filesystem:,\
454	bootloader-probe,debug,devtree,devtreedir:,elilo,efi,extlinux,grub,lilo,\
455	output-file:,remove-mbargs:,remove-multiboot:,silo,yaboot -n ${SCRIPTNAME} -- "$@")"
456
457	[[ $? = 0 ]] \|\| exit 1
458
459	eval set -- "$OPTS"
460
461	while [ ${#} -gt 0 ]; do
462	case "$1" in
463	--help\|-h)
464	print_usage
465	exit 0
466	;;
467	--add-kernel)
468	kernel="${2}"
469	shift
470	;;
471	--args)
472	args="${2}"
473	shift
474	;;
475	--bad-image-okay)
476	bad_image=true
477	;;
478	--config-file\|-c)
479	zipl_config="${2}"
480	shift
481	;;
482	--copy-default)
483	copy_default=true
484	;;
485	--default-kernel)
486	display_default="kernel"
487	;;
488	--default-index)
489	display_default="index"
490	;;
491	--default-title)
492	display_default="title"
493	;;
494	--env)
495	env="${2}"
496	shift
497	;;
498	--grub2)
499	bootloader="grub2"
500	;;
501	--info)
502	display_info="${2}"
503	shift
504	;;
505	--initrd)
506	initrd="${2}"
507	shift
508	;;
509	--extra-initrd\|-i)
510	extra_initrd=" /${2}"
511	shift
512	;;
513	--make-default)
514	make_default=true
515	;;
516	--output-file\|-o)
517	output_file="${2}"
518	shift
519	;;
520	--remove-args)
521	remove_args="${2}"
522	shift
523	;;
524	--remove-kernel)
525	remove_kernel="${2}"
526	shift
527	;;
528	--set-default)
529	set_default="${2}"
530	shift
531	;;
532	--set-default-index)
533	set_default="${2}"
534	shift
535	;;
536	--title)
537	title="${2}"
538	shift
539	;;
540	--update-kernel)
541	update_kernel="${2}"
542	shift
543	;;
544	--zipl)
545	bootloader="zipl"
546	;;
547	--bls-directory\|-b)
548	blsdir="${2}"
549	shift
550	;;
551	--add-kernel\|--add-multiboot\|--mbargs\|--mounts\|--boot-filesystem\|\
552	--bootloader-probe\|--debug\|--devtree\|--devtreedir\|--elilo\|--efi\|\
553	--extlinux\|--grub\|--lilo\|--output-file\|--remove-mbargs\|--silo\|\
554	--remove-multiboot\|--slilo\|--yaboot)
555	echo
556	echo "${SCRIPTNAME}: the option \"${1}\" was deprecated" >&2
557	echo "Try '${SCRIPTNAME} --help' to list supported options" >&2
558	echo
559	exit 1
560	;;
561	--)
562	shift
563	break
564	;;
565	*)
566	echo
567	echo "${SCRIPTNAME}: invalid option \"${1}\"" >&2
568	echo "Try '${SCRIPTNAME} --help' for more information" >&2
569	echo
570	exit 1
571	;;
572	esac
573	shift
574	done
575
576	if [[ -z $blsdir ]]; then
577	blsdir="/boot/loader/entries"
578	fi
579
580	if [[ -z $env ]]; then
581	env="/boot/grub2/grubenv"
582	fi
583
584	if [[ -z $zipl_config ]]; then
585	zipl_config="/etc/zipl.conf"
586	fi
587
588	get_bls_values
589
590	default_index="$(get_default_index)"
591
592	if [[ -n $display_default ]]; then
593	display_default_value
594	fi
595
596	if [[ -n $display_info ]]; then
597	display_info_values "${display_info}"
598	fi
599
600	if [[ $bootloader = grub2 ]]; then
601	remove_var_prefix
602	fi
603
604	if [[ -n $kernel ]]; then
605	if [[ $copy_default = "true" ]]; then
606	opts="${bls_options[$default_index]}"
607	if [[ -n $args ]]; then
608	opts="${opts} ${args}"
609	fi
610	else
611	opts="${args}"
612	fi
613
614	add_bls_fragment "${kernel}" "${title}" "${opts}" "${initrd}" \
615	"${extra_initrd}"
616	fi
617
618	if [[ -n $remove_kernel ]]; then
619	remove_bls_fragment "${remove_kernel}"
620	fi
621
622	if [[ -n $update_kernel ]]; then
623	update_bls_fragment "${update_kernel}" "${remove_args}" "${args}" "${initrd}"
624	fi
625
626	if [[ -n $set_default ]]; then
627	set_default_bls "${set_default}"
628	fi
629
630	exit 0