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kdump-lib.sh: remove useless echo and cat

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upstream: fedora
resolves: bz2003832
conflict: none

commit 53813e8b9a
Author: Kairui Song <kasong@redhat.com>
Date:   Wed Sep 8 02:48:17 2021 +0800

    kdump-lib.sh: remove useless echo and cat

    Replace echo "$(cmd)" and "var=$(cmd); echo $var" with just `cmd`.
    And remove some useless cat.

    Signed-off-by: Kairui Song <kasong@redhat.com>
    Acked-by: Philipp Rudo <prudo@redhat.com>

Signed-off-by: Tao Liu <ltao@redhat.com>
This commit is contained in:
Tao Liu 2021-11-03 19:25:17 +08:00
parent c9f583baa4
commit 6dbf7c2e6c
1 changed files with 17 additions and 17 deletions
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34
kdump-lib.sh
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@ -14,7 +14,7 @@ is_fadump_capable()
# Check if firmware-assisted dump is enabled
# if no, fallback to kdump check
if [[ -f $FADUMP_ENABLED_SYS_NODE ]]; then
rc=$(cat $FADUMP_ENABLED_SYS_NODE)
rc=$(<$FADUMP_ENABLED_SYS_NODE)
[[ $rc -eq 1 ]] && return 0
fi
return 1
@ -59,13 +59,14 @@ to_dev_name() {
case "$dev" in
UUID=*)
dev=$(blkid -U "${dev#UUID=}")
blkid -U "${dev#UUID=}"
;;
LABEL=*)
dev=$(blkid -L "${dev#LABEL=}")
blkid -L "${dev#LABEL=}"
;;
*)
echo "$dev"
esac
echo $dev
}
is_user_configured_dump_target()
@ -93,12 +94,12 @@ get_block_dump_target()
fi
_target=$(get_user_configured_dump_disk)
[[ -n "$_target" ]] && echo $(to_dev_name $_target) && return
[[ -n "$_target" ]] && to_dev_name $_target && return
# Get block device name from local save path
_path=$(get_save_path)
_target=$(get_target_from_path $_path)
[[ -b "$_target" ]] && echo $(to_dev_name $_target)
[[ -b "$_target" ]] && to_dev_name $_target
}
is_dump_to_rootfs()
@ -113,7 +114,7 @@ get_failure_action_target()
if is_dump_to_rootfs; then
# Get rootfs device name
_target=$(get_root_fs_device)
[[ -b "$_target" ]] && echo $(to_dev_name $_target) && return
[[ -b "$_target" ]] && to_dev_name $_target && return
# Then, must be nfs root
echo "nfs"
fi
@ -441,7 +442,7 @@ check_crash_mem_reserved()
{
local mem_reserved
mem_reserved=$(cat /sys/kernel/kexec_crash_size)
mem_reserved=$(</sys/kernel/kexec_crash_size)
if [[ $mem_reserved -eq 0 ]]; then
derror "No memory reserved for crash kernel"
return 1
@ -467,7 +468,7 @@ check_current_kdump_status()
return 1
fi
rc=$(cat /sys/kernel/kexec_crash_loaded)
rc=$(</sys/kernel/kexec_crash_loaded)
if [[ $rc == 1 ]]; then
return 0
else
@ -566,7 +567,7 @@ is_secure_boot_enforced()
fi
# Detect secure boot on s390x
if [[ -e "/sys/firmware/ipl/secure" && "$(cat /sys/firmware/ipl/secure)" == "1" ]]; then
if [[ -e "/sys/firmware/ipl/secure" && "$(</sys/firmware/ipl/secure)" == "1" ]]; then
return 0
fi
@ -627,7 +628,7 @@ prepare_kdump_bootinfo()
boot_imglist="$KDUMP_IMG-$KDUMP_KERNELVER$KDUMP_IMG_EXT $machine_id/$KDUMP_KERNELVER/$KDUMP_IMG"
# Use BOOT_IMAGE as reference if possible, strip the GRUB root device prefix in (hd0,gpt1) format
local boot_img="$(cat /proc/cmdline | sed "s/^BOOT_IMAGE=\((\S*)\)\?\(\S*\) .*/\2/")"
local boot_img="$(sed "s/^BOOT_IMAGE=\((\S*)\)\?\(\S*\) .*/\2/" /proc/cmdline)"
if [[ -n "$boot_img" ]]; then
boot_imglist="$boot_img $boot_imglist"
fi
@ -708,7 +709,7 @@ prepare_cmdline()
local cmdline id
if [[ -z "$1" ]]; then
cmdline=$(cat /proc/cmdline)
cmdline=$(</proc/cmdline)
else
cmdline="$1"
fi
@ -762,7 +763,7 @@ prepare_cmdline()
#get system memory size in the unit of GB
get_system_size()
{
result=$(cat /proc/iomem | grep "System RAM" | awk -F ":" '{ print $1 }' | tr [:lower:] [:upper:] | paste -sd+)
result=$(grep "System RAM" /proc/iomem | awk -F ":" '{ print $1 }' | tr [:lower:] [:upper:] | paste -sd+)
result="+$result"
# replace '-' with '+0x' and '+' with '-0x'
sum=$( echo $result | sed -e 's/-/K0x/g' | sed -e 's/+/-0x/g' | sed -e 's/K/+/g' )
@ -871,11 +872,10 @@ kdump_get_maj_min() {
get_all_kdump_crypt_dev()
{
local _dev _crypt
local _dev
for _dev in $(get_block_dump_target); do
_crypt=$(get_luks_crypt_dev $(kdump_get_maj_min "$_dev"))
[[ -n "$_crypt" ]] && echo $_crypt
get_luks_crypt_dev "$(kdump_get_maj_min "$_dev")"
done
}
@ -944,7 +944,7 @@ get_kernel_size()
# Fallback to use iomem
local _size=0
for _seg in $(cat /proc/iomem | grep -E "Kernel (code|rodata|data|bss)" | cut -d ":" -f 1); do
for _seg in $(grep -E "Kernel (code|rodata|data|bss)" /proc/iomem | cut -d ":" -f 1); do
_size=$(( $_size + 0x${_seg#*-} - 0x${_seg%-*} ))
done
echo $_size