98 lines
2.0 KiB
Bash
98 lines
2.0 KiB
Bash
#!/bin/sh
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#
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# A simple script to remove old kernel files/modules.
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# Brought to you by yours truly Juan RP in the Public Domain.
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#
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: "${progname:="${0##*/}"}"
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usage() {
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cat <<_EOF
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Usage: $progname list [version ...]
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$progname rm all
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$progname rm <version ...>
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_EOF
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exit 1
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}
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list_kernels() {
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running=$(uname -r)
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installed=$(xbps-query -o "/boot/vmlinu[xz]-*" 2>/dev/null | awk '{print $2}')
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for arg; do
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case "$arg" in
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all) pattern="*" ;;
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*) pattern=$arg ;;
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esac
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for k in /boot/vmlinu[xz]-*; do
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case "$installed" in
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*"$k"*) continue ;;
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esac
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kver=${k#*-}
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case "$kver" in
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"$running") ;;
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"*") ;; # /boot isn't mounted -> no vmlinu[xz]
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$pattern) printf "%s\n" "$kver" ;;
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esac
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done
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done | sort -uV
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}
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run_hooks() {
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dir="$1"
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kver="$2"
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for d in /etc/kernel.d/"${dir}"/*; do
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[ -x "$d" ] || continue
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printf "Running %s kernel hook: %s...\n" "$dir" "${d##*/}"
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# Hooks assume they run from the root
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(cd / && ROOTDIR=. "$d" kernel "$kver")
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done
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}
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remove_kernel() {
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rmkver="$1"
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# Execute pre-remove kernel hooks.
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run_hooks pre-remove "$rmkver"
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for f in \
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/boot/config-"${rmkver}" \
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/boot/System.map-"${rmkver}" \
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/boot/vmlinu[xz]-"${rmkver}" \
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/usr/lib/modules/"${rmkver}"; do
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[ -e "$f" ] || continue
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printf "Removing %s...\n" "$f"
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rm -rf "$f"
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done
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# Execute post-remove kernel hooks.
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run_hooks post-remove "$rmkver"
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for f in \
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/usr/src/kernel-headers-"${rmkver}" \
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/usr/lib/debug/boot/vmlinu[xz]-"${rmkver}" \
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/usr/lib/debug/usr/lib/modules/"${rmkver}" \
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/boot/dtbs/dtbs-"${rmkver}"; do
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[ -e "$f" ] || continue
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printf "Removing %s...\n" "$f"
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rm -rf "$f"
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done
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}
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case "$1" in
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list) list_kernels "${2:-all}" ;;
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rm)
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[ -z "$2" ] && usage
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if [ "$(id -u)" -ne 0 ]; then
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printf "You have to run this script as root!\n" >&2
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exit 1
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fi
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shift
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for kver in $(list_kernels "$@"); do
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printf "Removing kernel %s...\n" "$kver"
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remove_kernel "$kver"
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done
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;;
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*) usage ;;
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esac
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exit 0
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