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compcache.hooks.diverted
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#!/bin/sh set -e if [ "$1" = prereqs ]; then exit 0 fi . /usr/share/initramfs-tools/hook-functions number= suffix= eval $(printf "%s" "$COMPCACHE_SIZE" | \ sed -nre 's/^ *([1-9][0-9]*) *([%KMGT]) *$/number="\1"; suffix="\2";/p') if [ -z "$number" ] || [ -z "$suffix" ]; then exit 0 fi if have_module zram; then name=zram manual_add_modules zram elif have_module ramzswap; then name=ramzswap manual_add_modules ramzswap elif have_module compcache; then name=compcache manual_add_modules compcache else exit 0 fi copy_exec /sbin/swapon copy_exec /sbin/mkswap copy_exec /usr/lib/initramfs-tools/bin/rzscontrol /sbin mem_total="\$(sed -nre 's/^MemTotal:\\s*([0-9]+) kB\$/\\1/p' /proc/meminfo)" case "$suffix" in %) kbytes="\$(($mem_total * $number / 100))" ;; K) kbytes=$(($number)) ;; M) kbytes=$(($number * 1024)) ;; G) kbytes=$(($number * 1024 * 1024)) ;; T) kbytes=$(($number * 1024 * 1024 * 1024)) ;; esac cat >"$DESTDIR"/sbin/compcache-enable <<'EOF' #!/bin/sh if [ "$#" != 3 ]; then echo "Usage: $0 <type> <size> <device>" 1>&2 exit 1 fi type="$1" size="$2" device="$3" number= suffix= eval $(printf "%s" "$size" | \ sed -nre 's/^ *([1-9][0-9]*) *([%KMGT]) *$/number="\1"; suffix="\2";/p') mem_total="$(sed -nre 's/^MemTotal:\s*([0-9]+) kB$/\1/p' /proc/meminfo)" case "$suffix" in %) kbytes="$(($mem_total * $number / 100))" ;; K) kbytes=$(($number)) ;; M) kbytes=$(($number * 1024)) ;; G) kbytes=$(($number * 1024 * 1024)) ;; T) kbytes=$(($number * 1024 * 1024 * 1024)) ;; esac bytes="$(($kbytes * 1024))" if [ "$type" = zram ]; then echo "$bytes" >/sys/block/$device/disksize && \ /sbin/mkswap "/dev/$device" >/dev/null elif [ "$type" = ramzswap ]; then /sbin/rzscontrol "/dev/$device" --disksize_kb="$kbytes" --init fi /sbin/swapon -p 100 "/dev/$device" 2>/dev/null exit 0 EOF chmod 0755 "$DESTDIR"/sbin/compcache-enable mkdir -p "$DESTDIR"/etc/udev/rules.d if [ "$name" = zram ]; then cat >"$DESTDIR"/etc/udev/rules.d/80-compcache.rules <<EOF KERNEL=="zram0", ACTION=="add", \\ RUN+="/sbin/compcache-enable zram $COMPCACHE_SIZE zram0" EOF elif [ "$name" = ramzswap ]; then cat >"$DESTDIR"/etc/udev/rules.d/80-compcache.rules <<EOF KERNEL=="ramzswap0", ACTION=="add", \\ RUN+="/sbin/compcache-enable ramzswap $COMPCACHE_SIZE ramzswap0" EOF else cat >"$DESTDIR"/etc/udev/rules.d/80-compcache.rules <<EOF KERNEL=="ramzswap0", ACTION=="add", \\ RUN+="/sbin/compcache-enable compcache $COMPCACHE_SIZE ramzswap0" EOF fi cat >"$DESTDIR"/scripts/init-top/compcache <<EOF #!/bin/sh PREREQ="" prereqs() { echo "\$PREREQ" } case \$1 in prereqs) prereqs exit 0 ;; esac # find total amount of available ram TOTAL_RAM=\$( grep MemTotal /proc/meminfo |tr -d ': [A-Z][a-z]') # Do not use compcache on the liveCD if we have more than 512M if [ "\${BOOT}" = "casper" ]; then if [ "\${TOTAL_RAM}" -gt 524288 ]; then exit 0 fi fi for x in \$(cat /proc/cmdline); do case \${x} in nocompcache) exit 0 ;; esac done EOF if [ "$name" = zram ]; then cat >>"$DESTDIR"/scripts/init-top/compcache <<EOF modprobe -q --ignore-install zram EOF elif [ "$name" = ramzswap ]; then cat >>"$DESTDIR"/scripts/init-top/compcache <<EOF modprobe -q --ignore-install ramzswap EOF else cat >>"$DESTDIR"/scripts/init-top/compcache <<EOF modprobe -q --ignore-install compcache compcache_size_kbytes="$kbytes" EOF fi chmod 0755 "$DESTDIR"/scripts/init-top/compcache # vim:set et sw=2 sts=2: