133 lines
3.1 KiB
Bash
Executable File
133 lines
3.1 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# Function and variables used in initramfs environment, POSIX compatible
|
|
#
|
|
|
|
DEFAULT_PATH="/var/crash/"
|
|
KDUMP_CONFIG_FILE="/etc/kdump.conf"
|
|
|
|
# Read kdump config in well formated style
|
|
kdump_read_conf()
|
|
{
|
|
# Following steps are applied in order: strip trailing comment, strip trailing space,
|
|
# strip heading space, match non-empty line, remove duplicated spaces between conf name and value
|
|
[ -f "$KDUMP_CONFIG_FILE" ] && sed -n -e "s/#.*//;s/\s*$//;s/^\s*//;s/\(\S\+\)\s*\(.*\)/\1 \2/p" $KDUMP_CONFIG_FILE
|
|
}
|
|
|
|
# Retrieves config value defined in kdump.conf
|
|
# $1: config name, sed regexp compatible
|
|
kdump_get_conf_val() {
|
|
# For lines matching "^\s*$1\s+", remove matched part (config name including space),
|
|
# remove tailing comment, space, then store in hold space. Print out the hold buffer on last line.
|
|
[ -f "$KDUMP_CONFIG_FILE" ] && \
|
|
sed -n -e "/^\s*\($1\)\s\+/{s/^\s*\($1\)\s\+//;s/#.*//;s/\s*$//;h};\${x;p}" $KDUMP_CONFIG_FILE
|
|
}
|
|
|
|
is_mounted()
|
|
{
|
|
findmnt -k -n $1 &>/dev/null
|
|
}
|
|
|
|
get_mount_info()
|
|
{
|
|
local _info_type=$1 _src_type=$2 _src=$3; shift 3
|
|
local _info=$(findmnt -k -n -r -o $_info_type --$_src_type $_src $@)
|
|
|
|
[ -z "$_info" ] && [ -e "/etc/fstab" ] && _info=$(findmnt -s -n -r -o $_info_type --$_src_type $_src $@)
|
|
|
|
echo $_info
|
|
}
|
|
|
|
is_ipv6_address()
|
|
{
|
|
echo $1 | grep -q ":"
|
|
}
|
|
|
|
is_fs_type_nfs()
|
|
{
|
|
[ "$1" = "nfs" ] || [ "$1" = "nfs4" ]
|
|
}
|
|
|
|
# If $1 contains dracut_args "--mount", return <filesystem type>
|
|
get_dracut_args_fstype()
|
|
{
|
|
echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f3
|
|
}
|
|
|
|
# If $1 contains dracut_args "--mount", return <device>
|
|
get_dracut_args_target()
|
|
{
|
|
echo $1 | grep "\-\-mount" | sed "s/.*--mount .\(.*\)/\1/" | cut -d' ' -f1
|
|
}
|
|
|
|
get_save_path()
|
|
{
|
|
local _save_path=$(kdump_get_conf_val path)
|
|
[ -z "$_save_path" ] && _save_path=$DEFAULT_PATH
|
|
|
|
# strip the duplicated "/"
|
|
echo $_save_path | tr -s /
|
|
}
|
|
|
|
get_root_fs_device()
|
|
{
|
|
findmnt -k -f -n -o SOURCE /
|
|
}
|
|
|
|
# Return the current underlying device of a path, ignore bind mounts
|
|
get_target_from_path()
|
|
{
|
|
local _target
|
|
|
|
_target=$(df $1 2>/dev/null | tail -1 | awk '{print $1}')
|
|
[[ "$_target" == "/dev/root" ]] && [[ ! -e /dev/root ]] && _target=$(get_root_fs_device)
|
|
echo $_target
|
|
}
|
|
|
|
get_fs_type_from_target()
|
|
{
|
|
get_mount_info FSTYPE source $1 -f
|
|
}
|
|
|
|
get_mntpoint_from_target()
|
|
{
|
|
# --source is applied to ensure non-bind mount is returned
|
|
get_mount_info TARGET source $1 -f
|
|
}
|
|
|
|
is_ssh_dump_target()
|
|
{
|
|
[[ $(kdump_get_conf_val ssh) == *@* ]]
|
|
}
|
|
|
|
is_raw_dump_target()
|
|
{
|
|
[[ $(kdump_get_conf_val raw) ]]
|
|
}
|
|
|
|
is_nfs_dump_target()
|
|
{
|
|
if [[ $(kdump_get_conf_val nfs) ]]; then
|
|
return 0;
|
|
fi
|
|
|
|
if is_fs_type_nfs $(get_dracut_args_fstype "$(kdump_get_conf_val dracut_args)"); then
|
|
return 0
|
|
fi
|
|
|
|
local _save_path=$(get_save_path)
|
|
local _target=$(get_target_from_path $_save_path)
|
|
local _fstype=$(get_fs_type_from_target $_target)
|
|
|
|
if is_fs_type_nfs $_fstype; then
|
|
return 0
|
|
fi
|
|
|
|
return 1
|
|
}
|
|
|
|
is_fs_dump_target()
|
|
{
|
|
[[ $(kdump_get_conf_val "ext[234]\|xfs\|btrfs\|minix") ]]
|
|
}
|