tmerge

tmerge

#!/bin/bash
MEMSIZE=$1
mounted=false
RC=1
PRETEND=0
WORLD=0

. /etc/portage/make.conf
. /etc/init.d/functions.sh

if [ -z "$PORTAGE_TMPDIR" ]; then
	PORTAGE_TMPDIR="/var/tmp/portage"
fi


mounttmpfs() {
	ebegin "Mounting $MEMSIZE of memory to ${PORTAGE_TMPDIR}"
	mount -t tmpfs -o size=$MEMSIZE,nr_inodes=1M tmpfs ${PORTAGE_TMPDIR}
	mounted="true"
	eend $?
}

compile() {
	einfo "running emerge $2 $3 $4 $5 $6 $7 $8 $9"
	emerge $2 $3 $4 $5 $6 $7 $8 $9 
	#${*}
	RC=$?
}

unmounttmpfs() {
	ebegin "Unmounting $MEMSIZE of memory to ${PORTAGE_TMPDIR}"
	umount -f ${PORTAGE_TMPDIR}
	eend $?
}

remounttmpfs() {
	ebegin "Remounting $MEMSIZE of memory to ${PORTAGE_TMPDIR}"
	umount -f ${PORTAGE_TMPDIR}
	mount -t tmpfs -o size=$MEMSIZE,nr_inodes=1M tmpfs ${PORTAGE_TMPDIR}
	mounted="true"
	eend $?
}

if [ -z "$(pgrep -f /usr/bin/emerge)" ];then
	if [ -z "$(mount | grep ${PORTAGE_TMPDIR})" ];then
		mounttmpfs
	else
		#eerror "tmpfs already mounted!"
		#unmounttmpfs
		remounttmpfs
	fi
else
	eerror "emerge already running!"
	exit 0
fi

# the next line would change the cpu-governour, if available, to the highest frequency
#[ -f /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor ] && echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

# run emerge
compile $@
if [[ "$2" == *p* ]] || [[ "$2" == *f* ]]; then
	PRETEND=1
fi
if [[ "$3" == *world* ]] || [[ "$4" == *world* ]]; then
	WORLD=1
fi

# unmount tmpfs
if $mounted; then
	unmounttmpfs
fi

# and set the scheduler back to "ondemand"
#[ -f /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor ] && echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

# Clearing emerge log
if [ $RC -eq 0 ] && [ $PRETEND -eq 0 ] && [ $WORLD -eq 1 ]; then
	einfo "Clearing emerge log"
	date > ~emc/logs/emerge.data.log
	echo "Total: 0 packages, Size of downloads: 0 kB" >> ~emc/logs/emerge.data.log
fi

This is my version of emerge wrapper to run portage with ram-mounted temp file.