b9e861
#!/bin/sh
b9e861
#
b9e861
# Kdump common variables and functions
b9e861
#
b9e861
b9e861
DEFAULT_PATH="/var/crash/"
b9e861
FENCE_KDUMP_CONFIG_FILE="/etc/sysconfig/fence_kdump"
b9e861
FENCE_KDUMP_SEND="/usr/libexec/fence_kdump_send"
b9e861
FADUMP_ENABLED_SYS_NODE="/sys/kernel/fadump_enabled"
b9e861
b9e861
is_fadump_capable()
b9e861
{
b9e861
    # Check if firmware-assisted dump is enabled
b9e861
    # if no, fallback to kdump check
b9e861
    if [ -f $FADUMP_ENABLED_SYS_NODE ]; then
b9e861
        rc=`cat $FADUMP_ENABLED_SYS_NODE`
b9e861
        [ $rc -eq 1 ] && return 0
b9e861
    fi
b9e861
    return 1
b9e861
}
b9e861
b9e861
perror_exit() {
b9e861
    echo $@ >&2
b9e861
    exit 1
b9e861
}
b9e861
b9e861
perror() {
b9e861
    echo $@ >&2
b9e861
}
b9e861
b9e861
is_ssh_dump_target()
b9e861
{
b9e861
    grep -q "^ssh[[:blank:]].*@" /etc/kdump.conf
b9e861
}
b9e861
b9e861
is_nfs_dump_target()
b9e861
{
b9e861
    grep -q "^nfs" /etc/kdump.conf || \
b9e861
        [[ $(get_dracut_args_fstype "$(grep "^dracut_args .*\-\-mount" /etc/kdump.conf)") = nfs* ]]
b9e861
}
b9e861
b9e861
is_raw_dump_target()
b9e861
{
b9e861
    grep -q "^raw" /etc/kdump.conf
b9e861
}
b9e861
b9e861
is_fs_type_nfs()
b9e861
{
b9e861
    local _fstype=$1
b9e861
    [ $_fstype = "nfs" ] || [ $_fstype = "nfs4" ] && return 0
b9e861
    return 1
b9e861
}
b9e861
b9e861
is_fs_dump_target()
b9e861
{
b9e861
    egrep -q "^ext[234]|^xfs|^btrfs|^minix" /etc/kdump.conf
b9e861
}
b9e861
b9e861
strip_comments()
b9e861
{
b9e861
    echo $@ | sed -e 's/\(.*\)#.*/\1/'
b9e861
}
b9e861
b9e861
# Read from kdump config file stripping all comments
b9e861
read_strip_comments()
b9e861
{
b9e861
    # strip heading spaces, and print any content starting with
b9e861
    # neither space or #, and strip everything after #
b9e861
    sed -n -e "s/^\s*\([^# \t][^#]\+\).*/\1/gp" $1
b9e861
}
b9e861
b9e861
# Check if fence kdump is configured in Pacemaker cluster
b9e861
is_pcs_fence_kdump()
b9e861
{
b9e861
    # no pcs or fence_kdump_send executables installed?
b9e861
    type -P pcs > /dev/null || return 1
b9e861
    [ -x $FENCE_KDUMP_SEND ] || return 1
b9e861
b9e861
    # fence kdump not configured?
b9e861
    (pcs cluster cib | grep 'type="fence_kdump"') &> /dev/null || return 1
b9e861
}
b9e861
b9e861
# Check if fence_kdump is configured using kdump options
b9e861
is_generic_fence_kdump()
b9e861
{
b9e861
    [ -x $FENCE_KDUMP_SEND ] || return 1
b9e861
b9e861
    grep -q "^fence_kdump_nodes" /etc/kdump.conf
b9e861
}
b9e861
b9e861
to_dev_name() {
b9e861
    local dev="${1//\"/}"
b9e861
b9e861
    case "$dev" in
b9e861
    UUID=*)
b9e861
        dev=`blkid -U "${dev#UUID=}"`
b9e861
        ;;
b9e861
    LABEL=*)
b9e861
        dev=`blkid -L "${dev#LABEL=}"`
b9e861
        ;;
b9e861
    esac
b9e861
    echo $dev
b9e861
}
b9e861
b9e861
is_user_configured_dump_target()
b9e861
{
b9e861
    return $(is_mount_in_dracut_args || is_ssh_dump_target || is_nfs_dump_target || \
b9e861
             is_raw_dump_target || is_fs_dump_target)
b9e861
}
b9e861
b9e861
get_user_configured_dump_disk()
b9e861
{
b9e861
    local _target
b9e861
b9e861
    _target=$(egrep "^ext[234]|^xfs|^btrfs|^minix|^raw" /etc/kdump.conf 2>/dev/null |awk '{print $2}')
b9e861
    [ -n "$_target" ] && echo $_target && return
b9e861
b9e861
    _target=$(get_dracut_args_target "$(grep "^dracut_args .*\-\-mount" /etc/kdump.conf)")
b9e861
    [ -b "$_target" ] && echo $_target
b9e861
}
b9e861
b9e861
get_root_fs_device()
b9e861
{
b9e861
    local _target
b9e861
    _target=$(findmnt -k -f -n -o SOURCE /)
b9e861
    [ -n "$_target" ] && echo $_target
b9e861
b9e861
    return
b9e861
}
b9e861
b9e861
get_save_path()
b9e861
{
b9e861
	local _save_path=$(grep "^path" /etc/kdump.conf|awk '{print $2}')
b9e861
	if [ -z "$_save_path" ]; then
b9e861
		_save_path=$DEFAULT_PATH
b9e861
	fi
b9e861
b9e861
	echo $_save_path
b9e861
}
b9e861
b9e861
get_block_dump_target()
b9e861
{
b9e861
    local _target _path
b9e861
b9e861
    if is_ssh_dump_target || is_nfs_dump_target; then
b9e861
        return
b9e861
    fi
b9e861
b9e861
    _target=$(get_user_configured_dump_disk)
b9e861
    [ -n "$_target" ] && echo $(to_dev_name $_target) && return
b9e861
b9e861
    # Get block device name from local save path
b9e861
    _path=$(get_save_path)
b9e861
    _target=$(get_target_from_path $_path)
b9e861
    [ -b "$_target" ] && echo $(to_dev_name $_target)
b9e861
}
b9e861
b9e861
is_dump_to_rootfs()
b9e861
{
b9e861
    grep -E "^(failure_action|default)[[:space:]]dump_to_rootfs" /etc/kdump.conf >/dev/null
b9e861
}
b9e861
b9e861
get_failure_action_target()
b9e861
{
b9e861
    local _target
b9e861
b9e861
    if is_dump_to_rootfs; then
b9e861
        # Get rootfs device name
b9e861
        _target=$(get_root_fs_device)
b9e861
        [ -b "$_target" ] && echo $(to_dev_name $_target) && return
b9e861
        # Then, must be nfs root
b9e861
        echo "nfs"
b9e861
    fi
b9e861
}
b9e861
b9e861
# Get kdump targets(including root in case of dump_to_rootfs).
b9e861
get_kdump_targets()
b9e861
{
b9e861
    local _target _root
b9e861
    local kdump_targets
b9e861
b9e861
    _target=$(get_block_dump_target)
b9e861
    if [ -n "$_target" ]; then
b9e861
        kdump_targets=$_target
b9e861
    elif is_ssh_dump_target; then
b9e861
        kdump_targets="ssh"
b9e861
    else
b9e861
        kdump_targets="nfs"
b9e861
    fi
b9e861
b9e861
    # Add the root device if dump_to_rootfs is specified.
b9e861
    _root=$(get_failure_action_target)
b9e861
    if [ -n "$_root" -a "$kdump_targets" != "$_root" ]; then
b9e861
        kdump_targets="$kdump_targets $_root"
b9e861
    fi
b9e861
b9e861
    echo "$kdump_targets"
b9e861
}
b9e861
b9e861
b9e861
# findmnt uses the option "-v, --nofsroot" to exclusive the [/dir]
b9e861
# in the SOURCE column for bind-mounts, then if $_mntpoint equals to
b9e861
# $_mntpoint_nofsroot, the mountpoint is not bind mounted directory.
b9e861
is_bind_mount()
b9e861
{
b9e861
    local _mntpoint=$(findmnt $1 | tail -n 1 | awk '{print $2}')
b9e861
    local _mntpoint_nofsroot=$(findmnt -v $1 | tail -n 1 | awk '{print $2}')
b9e861
b9e861
    if [[ $_mntpoint = $_mntpoint_nofsroot ]]; then
b9e861
        return 1
b9e861
    else
b9e861
        return 0
b9e861
    fi
b9e861
}
b9e861
b9e861
# Below is just an example for mount info
b9e861
# /dev/mapper/atomicos-root[/ostree/deploy/rhel-atomic-host/var], if the
b9e861
# directory is bind mounted. The former part represents the device path, rest
b9e861
# part is the bind mounted directory which quotes by bracket "[]".
b9e861
get_bind_mount_directory()
b9e861
{
b9e861
    local _mntpoint=$(findmnt $1 | tail -n 1 | awk '{print $2}')
b9e861
    local _mntpoint_nofsroot=$(findmnt -v $1 | tail -n 1 | awk '{print $2}')
b9e861
b9e861
    _mntpoint=${_mntpoint#*$_mntpoint_nofsroot}
b9e861
b9e861
    _mntpoint=${_mntpoint#[}
b9e861
    _mntpoint=${_mntpoint%]}
b9e861
b9e861
    echo $_mntpoint
b9e861
}
b9e861
b9e861
get_mntpoint_from_path() 
b9e861
{
b9e861
    echo $(df $1 | tail -1 |  awk '{print $NF}')
b9e861
}
b9e861
b9e861
get_target_from_path()
b9e861
{
b9e861
    local _target
b9e861
b9e861
    _target=$(df $1 2>/dev/null | tail -1 |  awk '{print $1}')
b9e861
    [[ "$_target" == "/dev/root" ]] && [[ ! -e /dev/root ]] && _target=$(get_root_fs_device)
b9e861
    echo $_target
b9e861
}
b9e861
b9e861
get_fs_type_from_target() 
b9e861
{
b9e861
    echo $(findmnt -k -f -n -r -o FSTYPE $1)
b9e861
}
b9e861
b9e861
# input: device path
b9e861
# output: the general mount point
b9e861
# find the general mount point, not the bind mounted point in atomic
b9e861
# As general system, Use the previous code
b9e861
#
b9e861
# ERROR and EXIT:
b9e861
# the device can be umounted the general mount point, if one of the mount point is bind mounted
b9e861
# For example:
b9e861
# mount /dev/sda /mnt/
b9e861
# mount -o bind /mnt/var /var
b9e861
# umount /mnt
b9e861
get_mntpoint_from_target()
b9e861
{
b9e861
    if is_atomic; then
b9e861
        for _mnt in $(findmnt -k -n -r -o TARGET $1)
b9e861
        do
b9e861
            if ! is_bind_mount $_mnt; then
b9e861
                echo $_mnt
b9e861
                return
b9e861
            fi
b9e861
        done
b9e861
b9e861
        echo "Mount $1 firstly, without the bind mode" >&2
b9e861
        exit 1
b9e861
    else
b9e861
        echo $(findmnt -k -f -n -r -o TARGET $1)
b9e861
    fi
b9e861
}
b9e861
b9e861
# get_option_value <option_name>
b9e861
# retrieves value of option defined in kdump.conf
b9e861
get_option_value() {
b9e861
    echo $(strip_comments `grep "^$1[[:space:]]\+" /etc/kdump.conf | tail -1 | cut -d\  -f2-`)
b9e861
}
b9e861
b9e861
#This function compose a absolute path with the mount
b9e861
#point and the relative $SAVE_PATH.
b9e861
#target is passed in as argument, could be UUID, LABEL,
b9e861
#block device or even nfs server export of the form of
b9e861
#"my.server.com:/tmp/export"?
b9e861
#And possibly this could be used for both default case
b9e861
#as well as when dump taret is specified. When dump
b9e861
#target is not specified, then $target would be null.
b9e861
make_absolute_save_path()
b9e861
{
b9e861
    local _target=$1
b9e861
    local _mnt
b9e861
b9e861
    [ -n $_target ] && _mnt=$(get_mntpoint_from_target $1)
b9e861
    _mnt="${_mnt}/$SAVE_PATH"
b9e861
b9e861
    # strip the duplicated "/"
b9e861
    echo "$_mnt" | tr -s /
b9e861
}
b9e861
b9e861
check_save_path_fs()
b9e861
{
b9e861
    local _path=$1
b9e861
b9e861
    if [ ! -d $_path ]; then
b9e861
        perror_exit "Dump path $_path does not exist."
b9e861
    fi
b9e861
}
b9e861
b9e861
is_atomic()
b9e861
{
b9e861
    grep -q "ostree" /proc/cmdline
b9e861
}
b9e861
b9e861
# fixme, try the best to decide whether the ipv6 addr is allocated by slaac or dhcp6
b9e861
is_ipv6_auto()
b9e861
{
b9e861
    local _netdev=$1
b9e861
    local _auto=$(cat /proc/sys/net/ipv6/conf/$_netdev/autoconf)
b9e861
    if [ $_auto -eq 1 ]; then
b9e861
        return 0
b9e861
    else
b9e861
        return 1
b9e861
    fi
b9e861
}
b9e861
b9e861
is_ipv6_address()
b9e861
{
b9e861
    echo $1 | grep -q ":"
b9e861
}
b9e861
b9e861
# get ip address or hostname from nfs/ssh config value
b9e861
get_remote_host()
b9e861
{
b9e861
    local _config_val=$1
b9e861
b9e861
    # ipv6 address in kdump.conf is around with "[]",
b9e861
    # factor out the ipv6 address
b9e861
    _config_val=${_config_val#*@}
b9e861
    _config_val=${_config_val%:/*}
b9e861
    _config_val=${_config_val#[}
b9e861
    _config_val=${_config_val%]}
b9e861
    echo $_config_val
b9e861
}
b9e861
b9e861
is_hostname()
b9e861
{
b9e861
    local _hostname=`echo $1 | grep ":"`
b9e861
b9e861
    if [ -n "$_hostname" ]; then
b9e861
        return 1
b9e861
    fi
b9e861
    echo $1 | grep -q "[a-zA-Z]"
b9e861
}
b9e861
b9e861
# Copied from "/etc/sysconfig/network-scripts/network-functions"
b9e861
get_hwaddr()
b9e861
{
b9e861
    if [ -f "/sys/class/net/${1}/address" ]; then
b9e861
        awk '{ print toupper($0) }' < /sys/class/net/${1}/address
b9e861
    elif [ -d "/sys/class/net/${1}" ]; then
b9e861
       LC_ALL= LANG= ip -o link show ${1} 2>/dev/null | \
b9e861
            awk '{ print toupper(gensub(/.*link\/[^ ]* ([[:alnum:]:]*).*/,
b9e861
                                        "\\1", 1)); }'
b9e861
    fi
b9e861
}
b9e861
b9e861
get_ifcfg_by_device()
b9e861
{
b9e861
    grep -E -i -l "^[[:space:]]*DEVICE=\"*${1}\"*[[:space:]]*$" \
b9e861
         /etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
b9e861
}
b9e861
b9e861
get_ifcfg_by_hwaddr()
b9e861
{
b9e861
    grep -E -i -l "^[[:space:]]*HWADDR=\"*${1}\"*[[:space:]]*$" \
b9e861
         /etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
b9e861
}
b9e861
b9e861
get_ifcfg_by_uuid()
b9e861
{
b9e861
    grep -E -i -l "^[[:space:]]*UUID=\"*${1}\"*[[:space:]]*$" \
b9e861
         /etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
b9e861
}
b9e861
b9e861
get_ifcfg_by_name()
b9e861
{
b9e861
    grep -E -i -l "^[[:space:]]*NAME=\"*${1}\"*[[:space:]]*$" \
b9e861
         /etc/sysconfig/network-scripts/ifcfg-* 2>/dev/null | head -1
b9e861
}
b9e861
b9e861
is_nm_running()
b9e861
{
b9e861
    [ "$(LANG=C nmcli -t --fields running general status 2>/dev/null)" = "running" ]
b9e861
}
b9e861
b9e861
is_nm_handling()
b9e861
{
b9e861
    LANG=C nmcli -t --fields device,state  dev status 2>/dev/null \
b9e861
          | grep -q "^\(${1}:connected\)\|\(${1}:connecting.*\)$"
b9e861
}
b9e861
b9e861
# $1: netdev name
b9e861
get_ifcfg_nmcli()
b9e861
{
b9e861
    local nm_uuid nm_name
b9e861
    local ifcfg_file
b9e861
b9e861
    # Get the active nmcli config name of $1
b9e861
    if is_nm_running && is_nm_handling "${1}" ; then
b9e861
        # The configuration "uuid" and "name" generated by nm is wrote to
b9e861
        # the ifcfg file as "UUID=<nm_uuid>" and "NAME=<nm_name>".
b9e861
        nm_uuid=$(LANG=C nmcli -t --fields uuid,device c show --active 2>/dev/null \
b9e861
                  | grep "${1}" | head -1 | cut -d':' -f1)
b9e861
        nm_name=$(LANG=C nmcli -t --fields name,device c show --active 2>/dev/null \
b9e861
                  | grep "${1}" | head -1 | cut -d':' -f1)
b9e861
        ifcfg_file=$(get_ifcfg_by_uuid "${nm_uuid}")
b9e861
        [ -z "${ifcfg_file}" ] && ifcfg_file=$(get_ifcfg_by_name "${nm_name}")
b9e861
    fi
b9e861
b9e861
    echo -n "${ifcfg_file}"
b9e861
}
b9e861
b9e861
# $1: netdev name
b9e861
get_ifcfg_legacy()
b9e861
{
b9e861
    local ifcfg_file
b9e861
b9e861
    ifcfg_file="/etc/sysconfig/network-scripts/ifcfg-${1}"
b9e861
    [ -f "${ifcfg_file}" ] && echo -n "${ifcfg_file}" && return
b9e861
b9e861
    ifcfg_file=$(get_ifcfg_by_name "${1}")
b9e861
    [ -f "${ifcfg_file}" ] && echo -n "${ifcfg_file}" && return
b9e861
b9e861
    local hwaddr=$(get_hwaddr "${1}")
b9e861
    if [ -n "$hwaddr" ]; then
b9e861
        ifcfg_file=$(get_ifcfg_by_hwaddr "${hwaddr}")
b9e861
        [ -f "${ifcfg_file}" ] && echo -n "${ifcfg_file}" && return
b9e861
    fi
b9e861
b9e861
    ifcfg_file=$(get_ifcfg_by_device "${1}")
b9e861
b9e861
    echo -n "${ifcfg_file}"
b9e861
}
b9e861
b9e861
# $1: netdev name
b9e861
# Return the ifcfg file whole name(including the path) of $1 if any.
b9e861
get_ifcfg_filename() {
b9e861
    local ifcfg_file
b9e861
b9e861
    ifcfg_file=$(get_ifcfg_nmcli "${1}")
b9e861
    if [ -z "${ifcfg_file}" ]; then
b9e861
        ifcfg_file=$(get_ifcfg_legacy "${1}")
b9e861
    fi
b9e861
b9e861
    echo -n "${ifcfg_file}"
b9e861
}
b9e861
b9e861
# returns 0 when omission of watchdog module is desired in dracut_args
b9e861
# returns 1 otherwise
b9e861
is_wdt_mod_omitted() {
b9e861
	local dracut_args
b9e861
	local ret=1
b9e861
b9e861
	dracut_args=$(grep  "^dracut_args" /etc/kdump.conf)
b9e861
	[[ -z $dracut_args ]] && return $ret
b9e861
b9e861
	eval set -- $dracut_args
b9e861
	while :; do
b9e861
		[[ -z $1 ]] && break
b9e861
		case $1 in
b9e861
			-o|--omit)
b9e861
				echo $2 | grep -qw "watchdog"
b9e861
				[[ $? == 0 ]] && ret=0
b9e861
				break
b9e861
		esac
b9e861
		shift
b9e861
	done
b9e861
b9e861
	return $ret
b9e861
}
b9e861
b9e861
# If "dracut_args" contains "--mount" information, use it
b9e861
# directly without any check(users are expected to ensure
b9e861
# its correctness).
b9e861
is_mount_in_dracut_args()
b9e861
{
b9e861
    grep -q "^dracut_args .*\-\-mount" /etc/kdump.conf
b9e861
}
b9e861
b9e861
# If $1 contains dracut_args "--mount", return <filesystem type>
b9e861
get_dracut_args_fstype()
b9e861
{
b9e861
    echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f3
b9e861
}
b9e861
b9e861
# If $1 contains dracut_args "--mount", return <device>
b9e861
get_dracut_args_target()
b9e861
{
b9e861
    echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f1
b9e861
}
b9e861
b9e861
check_crash_mem_reserved()
b9e861
{
b9e861
    local mem_reserved
b9e861
b9e861
    mem_reserved=$(cat /sys/kernel/kexec_crash_size)
b9e861
    if [ $mem_reserved -eq 0 ]; then
b9e861
        echo "No memory reserved for crash kernel"
b9e861
        return 1
b9e861
    fi
b9e861
b9e861
    return 0
b9e861
}
b9e861
b9e861
check_kdump_feasibility()
b9e861
{
b9e861
    if [ ! -e /sys/kernel/kexec_crash_loaded ]; then
b9e861
        echo "Kdump is not supported on this kernel"
b9e861
        return 1
b9e861
    fi
b9e861
    check_crash_mem_reserved
b9e861
    return $?
b9e861
}
b9e861
b9e861
check_current_kdump_status()
b9e861
{
b9e861
    if [ ! -f /sys/kernel/kexec_crash_loaded ];then
b9e861
        echo "Perhaps CONFIG_CRASH_DUMP is not enabled in kernel"
b9e861
        return 1
b9e861
    fi
b9e861
b9e861
    rc=`cat /sys/kernel/kexec_crash_loaded`
b9e861
    if [ $rc == 1 ]; then
b9e861
        return 0
b9e861
    else
b9e861
        return 1
b9e861
    fi
b9e861
}
b9e861
b9e861
# remove_cmdline_param <kernel cmdline> <param1> [<param2>] ... [<paramN>]
b9e861
# Remove a list of kernel parameters from a given kernel cmdline and print the result.
b9e861
# For each "arg" in the removing params list, "arg" and "arg=xxx" will be removed if exists.
b9e861
remove_cmdline_param()
b9e861
{
b9e861
    local cmdline=$1
b9e861
    shift
b9e861
b9e861
    for arg in $@; do
b9e861
        cmdline=`echo $cmdline | \
b9e861
                 sed -e "s/\b$arg=[^ ]*//g" \
b9e861
                 -e "s/^$arg\b//g" \
b9e861
                 -e "s/[[:space:]]$arg\b//g" \
b9e861
                 -e "s/\s\+/ /g"`
b9e861
    done
b9e861
    echo $cmdline
b9e861
}
b9e861
b9e861
#
b9e861
# This function returns the "apicid" of the boot
b9e861
# cpu (cpu 0) if present.
b9e861
#
b9e861
get_bootcpu_apicid()
b9e861
{
b9e861
    awk '                                                       \
b9e861
        BEGIN { CPU = "-1"; }                                   \
b9e861
        $1=="processor" && $2==":"      { CPU = $NF; }          \
b9e861
        CPU=="0" && /^apicid/           { print $NF; }          \
b9e861
        '                                                       \
b9e861
        /proc/cpuinfo
b9e861
}
b9e861
b9e861
#
b9e861
# append_cmdline <kernel cmdline> <parameter name> <parameter value>
b9e861
# This function appends argument "$2=$3" to string ($1) if not already present.
b9e861
#
b9e861
append_cmdline()
b9e861
{
b9e861
    local cmdline=$1
b9e861
    local newstr=${cmdline/$2/""}
b9e861
b9e861
    # unchanged str implies argument wasn't there
b9e861
    if [ "$cmdline" == "$newstr" ]; then
b9e861
        cmdline="${cmdline} ${2}=${3}"
b9e861
    fi
b9e861
b9e861
    echo $cmdline
b9e861
}
b9e861
b9e861
# This function check iomem and determines if we have more than
b9e861
# 4GB of ram available. Returns 1 if we do, 0 if we dont
b9e861
need_64bit_headers()
b9e861
{
b9e861
    return `tail -n 1 /proc/iomem | awk '{ split ($1, r, "-"); \
b9e861
    print (strtonum("0x" r[2]) > strtonum("0xffffffff")); }'`
b9e861
}
b9e861
b9e861
# Check if secure boot is being enforced.
b9e861
#
b9e861
# Per Peter Jones, we need check efivar SecureBoot-$(the UUID) and
b9e861
# SetupMode-$(the UUID), they are both 5 bytes binary data. The first four
b9e861
# bytes are the attributes associated with the variable and can safely be
b9e861
# ignored, the last bytes are one-byte true-or-false variables. If SecureBoot
b9e861
# is 1 and SetupMode is 0, then secure boot is being enforced.
b9e861
#
b9e861
# Assume efivars is mounted at /sys/firmware/efi/efivars.
b9e861
is_secure_boot_enforced()
b9e861
{
b9e861
    local secure_boot_file setup_mode_file
b9e861
    local secure_boot_byte setup_mode_byte
b9e861
b9e861
    secure_boot_file=$(find /sys/firmware/efi/efivars -name SecureBoot-* 2>/dev/null)
b9e861
    setup_mode_file=$(find /sys/firmware/efi/efivars -name SetupMode-* 2>/dev/null)
b9e861
b9e861
    if [ -f "$secure_boot_file" ] && [ -f "$setup_mode_file" ]; then
b9e861
        secure_boot_byte=$(hexdump -v -e '/1 "%d\ "' $secure_boot_file|cut -d' ' -f 5)
b9e861
        setup_mode_byte=$(hexdump -v -e '/1 "%d\ "' $setup_mode_file|cut -d' ' -f 5)
b9e861
b9e861
        if [ "$secure_boot_byte" = "1" ] && [ "$setup_mode_byte" = "0" ]; then
b9e861
            return 0
b9e861
        fi
b9e861
    fi
b9e861
b9e861
    return 1
b9e861
}
b9e861
b9e861
#
b9e861
# prepare_kexec_args <kexec args>
b9e861
# This function prepares kexec argument.
b9e861
#
b9e861
prepare_kexec_args()
b9e861
{
b9e861
    local kexec_args=$1
b9e861
    local found_elf_args
b9e861
b9e861
    ARCH=`uname -m`
b9e861
    if [ "$ARCH" == "i686" -o "$ARCH" == "i386" ]
b9e861
    then
b9e861
        need_64bit_headers
b9e861
        if [ $? == 1 ]
b9e861
        then
b9e861
            found_elf_args=`echo $kexec_args | grep elf32-core-headers`
b9e861
            if [ -n "$found_elf_args" ]
b9e861
            then
b9e861
                echo -n "Warning: elf32-core-headers overrides correct elf64 setting"
b9e861
                echo
b9e861
            else
b9e861
                kexec_args="$kexec_args --elf64-core-headers"
b9e861
            fi
b9e861
        else
b9e861
            found_elf_args=`echo $kexec_args | grep elf64-core-headers`
b9e861
            if [ -z "$found_elf_args" ]
b9e861
            then
b9e861
                kexec_args="$kexec_args --elf32-core-headers"
b9e861
            fi
b9e861
        fi
b9e861
    fi
b9e861
    echo $kexec_args
b9e861
}
b9e861
b9e861
check_boot_dir()
b9e861
{
b9e861
    local kdump_bootdir=$1
b9e861
    #If user specify a boot dir for kdump kernel, let's use it. Otherwise
b9e861
    #check whether it's a atomic host. If yes parse the subdirectory under
b9e861
    #/boot; If not just find it under /boot.
b9e861
    if [ -n "$kdump_bootdir" ]; then
b9e861
        echo "$kdump_bootdir"
b9e861
        return
b9e861
    fi
b9e861
b9e861
    if ! is_atomic || [ "$(uname -m)" = "s390x" ]; then
b9e861
        kdump_bootdir="/boot"
b9e861
    else
b9e861
        eval $(cat /proc/cmdline| grep "BOOT_IMAGE" | cut -d' ' -f1)
b9e861
        kdump_bootdir="/boot"$(dirname $BOOT_IMAGE)
b9e861
    fi
b9e861
    echo $kdump_bootdir
b9e861
}
b9e861
b9e861
#
b9e861
# prepare_cmdline <commandline> <commandline remove> <commandline append>
b9e861
# This function performs a series of edits on the command line.
b9e861
# Store the final result in global $KDUMP_COMMANDLINE.
b9e861
prepare_cmdline()
b9e861
{
b9e861
    local cmdline id
b9e861
b9e861
    if [ -z "$1" ]; then
b9e861
        cmdline=$(cat /proc/cmdline)
b9e861
    else
b9e861
        cmdline="$1"
b9e861
    fi
b9e861
b9e861
    # These params should always be removed
b9e861
    cmdline=$(remove_cmdline_param "$cmdline" crashkernel panic_on_warn)
b9e861
    # These params can be removed configurably
b9e861
    cmdline=$(remove_cmdline_param "$cmdline" "$2")
b9e861
b9e861
    # Always remove "root=X", as we now explicitly generate all kinds
b9e861
    # of dump target mount information including root fs.
b9e861
    #
b9e861
    # We do this before KDUMP_COMMANDLINE_APPEND, if one really cares
b9e861
    # about it(e.g. for debug purpose), then can pass "root=X" using
b9e861
    # KDUMP_COMMANDLINE_APPEND.
b9e861
    cmdline=$(remove_cmdline_param "$cmdline" root)
b9e861
b9e861
    # With the help of "--hostonly-cmdline", we can avoid some interitage.
b9e861
    cmdline=$(remove_cmdline_param "$cmdline" rd.lvm.lv rd.luks.uuid rd.dm.uuid rd.md.uuid fcoe)
b9e861
b9e861
    # Remove netroot, rd.iscsi.initiator and iscsi_initiator since
b9e861
    # we get duplicate entries for the same in case iscsi code adds
b9e861
    # it as well.
b9e861
    cmdline=$(remove_cmdline_param "$cmdline" netroot rd.iscsi.initiator iscsi_initiator)
b9e861
b9e861
    cmdline="${cmdline} $3"
b9e861
b9e861
    id=$(get_bootcpu_apicid)
b9e861
    if [ ! -z ${id} ] ; then
b9e861
        cmdline=$(append_cmdline "${cmdline}" disable_cpu_apicid ${id})
b9e861
    fi
b9e861
    echo ${cmdline}
b9e861
}