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132 lines
3.1 KiB
132 lines
3.1 KiB
#!/bin/sh |
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# |
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# The code in this file will be used in initramfs environment, bash may |
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# not be the default shell. Any code added must be POSIX compliant. |
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DEFAULT_PATH="/var/crash/" |
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KDUMP_CONFIG_FILE="/etc/kdump.conf" |
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FENCE_KDUMP_CONFIG_FILE="/etc/sysconfig/fence_kdump" |
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FENCE_KDUMP_SEND="/usr/libexec/fence_kdump_send" |
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# Read kdump config in well formated style |
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kdump_read_conf() |
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{ |
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# Following steps are applied in order: strip trailing comment, strip trailing space, |
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# strip heading space, match non-empty line, remove duplicated spaces between conf name and value |
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[ -f "$KDUMP_CONFIG_FILE" ] && sed -n -e "s/#.*//;s/\s*$//;s/^\s*//;s/\(\S\+\)\s*\(.*\)/\1 \2/p" $KDUMP_CONFIG_FILE |
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} |
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# Retrieves config value defined in kdump.conf |
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# $1: config name, sed regexp compatible |
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kdump_get_conf_val() |
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{ |
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# For lines matching "^\s*$1\s+", remove matched part (config name including space), |
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# remove tailing comment, space, then store in hold space. Print out the hold buffer on last line. |
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[ -f "$KDUMP_CONFIG_FILE" ] && |
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sed -n -e "/^\s*\($1\)\s\+/{s/^\s*\($1\)\s\+//;s/#.*//;s/\s*$//;h};\${x;p}" $KDUMP_CONFIG_FILE |
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} |
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is_mounted() |
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{ |
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findmnt -k -n "$1" > /dev/null 2>&1 |
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} |
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# $1: info type |
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# $2: mount source type |
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# $3: mount source |
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# $4: extra args |
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get_mount_info() |
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{ |
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__kdump_mnt=$(findmnt -k -n -r -o "$1" "--$2" "$3" $4) |
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[ -z "$__kdump_mnt" ] && [ -e "/etc/fstab" ] && __kdump_mnt=$(findmnt -s -n -r -o "$1" "--$2" "$3" $4) |
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echo "$__kdump_mnt" |
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} |
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is_ipv6_address() |
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{ |
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echo "$1" | grep -q ":" |
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} |
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is_fs_type_nfs() |
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{ |
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[ "$1" = "nfs" ] || [ "$1" = "nfs4" ] |
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} |
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# If $1 contains dracut_args "--mount", return <filesystem type> |
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get_dracut_args_fstype() |
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{ |
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echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f3 |
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} |
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# If $1 contains dracut_args "--mount", return <device> |
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get_dracut_args_target() |
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{ |
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echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f1 |
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} |
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get_save_path() |
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{ |
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__kdump_path=$(kdump_get_conf_val path) |
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[ -z "$__kdump_path" ] && __kdump_path=$DEFAULT_PATH |
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# strip the duplicated "/" |
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echo "$__kdump_path" | tr -s / |
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} |
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get_root_fs_device() |
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{ |
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findmnt -k -f -n -o SOURCE / |
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} |
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# Return the current underlying device of a path, ignore bind mounts |
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get_target_from_path() |
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{ |
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__kdump_target=$(df "$1" 2> /dev/null | tail -1 | awk '{print $1}') |
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[ "$__kdump_target" = "/dev/root" ] && [ ! -e /dev/root ] && __kdump_target=$(get_root_fs_device) |
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echo "$__kdump_target" |
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} |
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get_fs_type_from_target() |
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{ |
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get_mount_info FSTYPE source "$1" -f |
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} |
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get_mntpoint_from_target() |
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{ |
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# --source is applied to ensure non-bind mount is returned |
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get_mount_info TARGET source "$1" -f |
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} |
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is_ssh_dump_target() |
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{ |
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kdump_get_conf_val ssh | grep -q @ |
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} |
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is_raw_dump_target() |
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{ |
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[ -n "$(kdump_get_conf_val raw)" ] |
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} |
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is_nfs_dump_target() |
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{ |
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if [ -n "$(kdump_get_conf_val nfs)" ]; then |
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return 0 |
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fi |
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if is_fs_type_nfs "$(get_dracut_args_fstype "$(kdump_get_conf_val dracut_args)")"; then |
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return 0 |
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fi |
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if is_fs_type_nfs "$(get_fs_type_from_target "$(get_target_from_path "$(get_save_path)")")"; then |
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return 0 |
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fi |
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return 1 |
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} |
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is_fs_dump_target() |
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{ |
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[ -n "$(kdump_get_conf_val "ext[234]\|xfs\|btrfs\|minix")" ] |
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}
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