void-packages/srcpkgs/base-files/files/vkpurge

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#!/bin/sh
#
# A simple script to remove old kernel files/modules.
# Brought to you by yours truly Juan RP in the Public Domain.
#
: ${progname:=$(basename $0)}
case "$(xbps-uhelper arch)" in
aarch64*|ppc64*) KIMAGE="vmlinux";;
*) KIMAGE="vmlinuz";;
esac
usage()
{
cat <<_EOF
Usage: $progname <target> [<version>]
Targets:
list Lists old installed kernels.
rm <version...|all> Remove kernel <version> or all old kernels.
Example:
$ $progname list
$ $progname rm 4.9.81_1
_EOF
exit 1
}
list_kernels()
{
local k kpkg installed kver _f
for k in /boot/$KIMAGE-*; do
_f=$(basename $k)
kver=$(echo ${_f}|sed -e 's|-rc|rc|')
installed=$(xbps-query -o "$k" 2>/dev/null)
[ -n "$installed" ] && continue
kpkg="$(xbps-uhelper getpkgversion ${_f} 2>/dev/null)"
[ "$(uname -r)" = "$kpkg" ] && continue
[ -n "$kpkg" ] && echo "$kpkg"
done
}
run_hooks()
{
local dir="$1"
local kver="$2"
local d
for d in /etc/kernel.d/${dir}/*; do
[ ! -x "$d" ] && continue
echo "Running ${dir} kernel hook: $(basename $d)..."
$d kernel $kver
done
}
remove_kernel()
{
local rmkver="$1"
local installed f kfile
if [ ! -f /boot/$KIMAGE-${rmkver} -a ! -d /lib/modules/${rmkver} ]; then
echo "Kernel ${rmkver} not installed."
exit 0
fi
installed=$(xbps-uhelper version "linux${rmkver%*.*}" 2>/dev/null)
if [ -n "$installed" -a "$installed" = "$rmkver" ]; then
echo "Kernel $rmkver is currently installed."
exit 0
fi
# Execute pre-remove kernel hooks.
run_hooks pre-remove $rmkver
# Remove kernel files in /boot.
for f in config System.map $KIMAGE; do
kfile="/boot/${f}-${rmkver}"
[ ! -f "${kfile}" ] && continue
echo "Removing ${kfile}..."
rm -f ${kfile}
done
# Remove kernel modules
if [ -d "/lib/modules/${rmkver}" ]; then
echo "Removing /lib/modules/${rmkver}..."
rm -rf /lib/modules/${rmkver}
fi
# Execute post-remove kernel hooks.
run_hooks post-remove $rmkver
# Remove kernel-headers.
if [ -d /usr/src/kernel-headers-${rmkver} ]; then
rm -rf /usr/src/kernel-headers-${rmkver}
fi
# Remove debugging symbols.
dfile=/usr/lib/debug/boot/vmlinux-${rmkver}
if [ -f "${dfile}" ]; then
echo "Removing ${dfile}..."
rm -f ${dfile}
fi
if [ -d /usr/lib/debug/usr/lib/modules/${rmkver} ]; then
echo "Removing /usr/lib/debug/usr/lib/modules/${rmkver}..."
rm -rf /usr/lib/debug/usr/lib/modules/${rmkver}
fi
# Remove dtb files
if [ -d "/boot/dtbs/dtbs-${rmkver}" ]; then
echo "Removing /boot/dtbs/dtbs-${rmkver}..."
rm -rf "/boot/dtbs/dtbs-${rmkver}"
fi
}
if [ "$1" = "list" ]; then
list_kernels
elif [ "$1" = "rm" ]; then
if [ "$(id -u)" -ne 0 ]; then
echo "You have to run this script as root!"
exit 1
fi
if [ -z "$2" ]; then
usage
elif [ "$2" = "all" ]; then
kernels=$(list_kernels)
for k in ${kernels}; do
echo "Removing kernel $k files ..."
remove_kernel "$k"
done
else
shift
for k; do
echo "Removing kernel $k files ..."
remove_kernel "$k"
done
fi
else
usage
fi
exit 0