kdump-lib-initramfs.sh: prepare to be a POSIX compatible lib
Move all functions needed in the second kernel from kdump-lib.sh to kdump-lib-initramfs.sh, and update shebang headers. Now, kdump-lib-initramfs.sh is an independent lib script, no longer depend on kdump-lib.sh, and kdump-lib.sh is no longer needed for the second kernel. In later commits, functions in kdump-lib-initramfs.sh will be reworked to be POSIX compatible, kdump-lib.sh will contain bash only functions. POSIX shell have very limited features, eg. `local` keyword doesn't exist in POSIX but we rely on that heavily. So kdump-lib.sh will use bash syntax and contain the most complex helper and codes. kdump-lib-initramfs.sh will contain the minimum set of helpers, and be shared by both the first and second kernel. Signed-off-by: Kairui Song <kasong@redhat.com> Acked-by: Philipp Rudo <prudo@redhat.com>
This commit is contained in:
Kairui Song
parent
0e4b66b1ab
commit
a5faa052d4
@ -18,7 +18,7 @@ binary_next_line = false
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space_redirects = true
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# Some scripts will only run with bash
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[{mkfadumprd,mkdumprd,kdumpctl}]
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[{mkfadumprd,mkdumprd,kdumpctl,kdump-lib.sh}]
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shell_variant = bash
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# Use dracut code style for *-module-setup.sh
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@ -1034,7 +1034,6 @@ install() {
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inst "/usr/bin/printf" "/sbin/printf"
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inst "/usr/bin/logger" "/sbin/logger"
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inst "/usr/bin/chmod" "/sbin/chmod"
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inst "/lib/kdump/kdump-lib.sh" "/lib/kdump-lib.sh"
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inst "/lib/kdump/kdump-lib-initramfs.sh" "/lib/kdump-lib-initramfs.sh"
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inst "/lib/kdump/kdump-logger.sh" "/lib/kdump-logger.sh"
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inst "$moddir/kdump.sh" "/usr/bin/kdump.sh"
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@ -1,8 +1,11 @@
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# These variables and functions are useful in 2nd kernel
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#!/bin/sh
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#
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# Function and variables used in initramfs environment, POSIX compatible
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#
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. /lib/kdump-lib.sh
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. /lib/kdump-logger.sh
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DEFAULT_PATH="/var/crash/"
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KDUMP_PATH="/var/crash"
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KDUMP_LOG_FILE="/run/initramfs/kexec-dmesg.log"
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CORE_COLLECTOR=""
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@ -20,6 +23,7 @@ KDUMP_PRE=""
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KDUMP_POST=""
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NEWROOT="/sysroot"
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OPALCORE="/sys/firmware/opal/mpipl/core"
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KDUMP_CONFIG_FILE="/etc/kdump.conf"
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#initiate the kdump logger
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dlog_init
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@ -28,6 +32,131 @@ if [ $? -ne 0 ]; then
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exit 1
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fi
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# Read kdump config in well formated style
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kdump_read_conf()
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{
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# Following steps are applied in order: strip trailing comment, strip trailing space,
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# strip heading space, match non-empty line, remove duplicated spaces between conf name and value
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[ -f "$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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# 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
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}
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get_mount_info()
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{
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local _info_type=$1 _src_type=$2 _src=$3; shift 3
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local _info=$(findmnt -k -n -r -o $_info_type --$_src_type $_src $@)
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[ -z "$_info" ] && [ -e "/etc/fstab" ] && _info=$(findmnt -s -n -r -o $_info_type --$_src_type $_src $@)
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echo $_info
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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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local _save_path=$(kdump_get_conf_val path)
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[ -z "$_save_path" ] && _save_path=$DEFAULT_PATH
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# strip the duplicated "/"
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echo $_save_path | tr -s /
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}
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get_root_fs_device()
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{
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findmnt -k -f -n -o SOURCE /
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}
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# Return the current underlying device of a path, ignore bind mounts
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get_target_from_path()
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{
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local _target
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_target=$(df $1 2>/dev/null | tail -1 | awk '{print $1}')
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[[ "$_target" == "/dev/root" ]] && [[ ! -e /dev/root ]] && _target=$(get_root_fs_device)
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echo $_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) == *@* ]]
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}
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is_raw_dump_target()
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{
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[[ $(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 [[ $(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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local _save_path=$(get_save_path)
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local _target=$(get_target_from_path $_save_path)
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local _fstype=$(get_fs_type_from_target $_target)
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if is_fs_type_nfs $_fstype; 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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[[ $(kdump_get_conf_val "ext[234]\|xfs\|btrfs\|minix") ]]
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}
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get_kdump_confs()
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{
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local config_opt config_val
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131
kdump-lib.sh
131
kdump-lib.sh
@ -1,13 +1,13 @@
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#!/bin/sh
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#!/bin/bash
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#
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# Kdump common variables and functions
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#
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DEFAULT_PATH="/var/crash/"
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. /usr/lib/kdump/kdump-lib-initramfs.sh
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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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FADUMP_ENABLED_SYS_NODE="/sys/kernel/fadump_enabled"
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KDUMP_CONFIG_FILE="/etc/kdump.conf"
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is_fadump_capable()
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{
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@ -35,64 +35,6 @@ perror_exit() {
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exit 1
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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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is_ssh_dump_target()
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{
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[[ $(kdump_get_conf_val ssh) == *@* ]]
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}
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is_nfs_dump_target()
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{
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if [[ $(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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local _save_path=$(get_save_path)
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local _target=$(get_target_from_path $_save_path)
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local _fstype=$(get_fs_type_from_target $_target)
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if is_fs_type_nfs $_fstype; 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_raw_dump_target()
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{
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[[ $(kdump_get_conf_val raw) ]]
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}
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is_fs_dump_target()
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{
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[[ $(kdump_get_conf_val "ext[234]\|xfs\|btrfs\|minix") ]]
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}
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# Read kdump config in well formatted style
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kdump_read_conf()
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{
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# Following steps are applied in order: strip trailing comment, strip trailing space,
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# strip heading space, match non-empty line, remove duplicated spaces between conf name and value
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[ -f "$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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# 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}" $KDUMP_CONFIG_FILE
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}
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# Check if fence kdump is configured in Pacemaker cluster
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is_pcs_fence_kdump()
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{
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@ -142,20 +84,6 @@ get_user_configured_dump_disk()
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[ -b "$_target" ] && echo $_target
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}
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get_root_fs_device()
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{
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findmnt -k -f -n -o SOURCE /
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}
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get_save_path()
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{
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local _save_path=$(kdump_get_conf_val path)
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[ -z "$_save_path" ] && _save_path=$DEFAULT_PATH
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# strip the duplicated "/"
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echo $_save_path | tr -s /
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}
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get_block_dump_target()
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{
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local _target _path
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@ -261,46 +189,10 @@ get_bind_mount_source()
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echo $_mnt$_fsroot$_path
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}
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# Return the current underlaying device of a path, ignore bind mounts
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get_target_from_path()
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{
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local _target
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_target=$(df $1 2>/dev/null | tail -1 | awk '{print $1}')
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[[ "$_target" == "/dev/root" ]] && [[ ! -e /dev/root ]] && _target=$(get_root_fs_device)
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echo $_target
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}
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is_mounted()
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{
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findmnt -k -n $1 &>/dev/null
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}
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get_mount_info()
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{
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local _info_type=$1 _src_type=$2 _src=$3; shift 3
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local _info=$(findmnt -k -n -r -o $_info_type --$_src_type $_src $@)
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[ -z "$_info" ] && [ -e "/etc/fstab" ] && _info=$(findmnt -s -n -r -o $_info_type --$_src_type $_src $@)
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echo $_info
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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_mntopt_from_target()
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{
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get_mount_info OPTIONS source $1 -f
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}
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# Find the general mount point of a dump target, not the bind mount point
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get_mntpoint_from_target()
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{
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# Expcilitly specify --source to findmnt could 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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# Get the path where the target will be mounted in kdump kernel
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# $1: kdump target device
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@ -345,11 +237,6 @@ is_atomic()
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grep -q "ostree" /proc/cmdline
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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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# get ip address or hostname from nfs/ssh config value
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get_remote_host()
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{
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@ -562,18 +449,6 @@ is_mount_in_dracut_args()
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[[ " $(kdump_get_conf_val dracut_args)" =~ .*[[:space:]]--mount[=[:space:]].* ]]
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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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check_crash_mem_reserved()
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{
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local mem_reserved
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