Add build system

Add autoconf style build infrastructure to the ZFS tree.  This
includes autogen.sh, configure.ac, m4 macros, some scripts/*,
and makefiles for all the core ZFS components.

1 files changed, 373 insertions, 0 deletions

diff --git a/scripts/common.sh.in b/scripts/common.sh.in
new file mode 100644
index 000000000..00418696c
--- /dev/null
+++ b/scripts/common.sh.in
@@ -0,0 +1,373 @@
+#!/bin/bash
+#
+# Common support functions for testing scripts.  If a .script-config
+# files is available it will be sourced so in-tree kernel modules and
+# utilities will be used.  If no .script-config can be found then the
+# installed kernel modules and utilities will be used.
+
+basedir="$(dirname $0)"
+
+SCRIPT_CONFIG=.script-config
+if [ -f "${basedir}/../${SCRIPT_CONFIG}" ]; then
+. "${basedir}/../${SCRIPT_CONFIG}"
+else
+MODULES=(zlib_deflate spl splat zavl znvpair zunicode zcommon zfs)
+fi
+
+PROG="<define PROG>"
+CLEANUP=
+VERBOSE=
+VERBOSE_FLAG=
+FORCE=
+FORCE_FLAG=
+DUMP_LOG=
+ERROR=
+RAID0S=()
+RAID10S=()
+RAIDZS=()
+RAIDZ2S=()
+
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libexecdir=@libexecdir@
+pkglibexecdir=${libexecdir}/@PACKAGE@
+bindir=@bindir@
+sbindir=@sbindir@
+
+ETCDIR=${ETCDIR:-/etc}
+DEVDIR=${DEVDIR:-/dev/disk/zpool}
+ZPOOLDIR=${ZPOOLDIR:-${pkglibexecdir}/zpool-config}
+
+ZDB=${ZDB:-${sbindir}/zdb}
+ZFS=${ZFS:-${sbindir}/zfs}
+ZINJECT=${ZINJECT:-${sbindir}/zinject}
+ZPOOL=${ZPOOL:-${sbindir}/zpool}
+ZPOOL_ID=${ZPOOL_ID:-${bindir}/zpool_id}
+ZTEST=${ZTEST:-${sbindir}/ztest}
+
+COMMON_SH=${COMMON_SH:-${pkglibexecdir}/common.sh}
+ZFS_SH=${ZFS_SH:-${pkglibexecdir}/zfs.sh}
+ZPOOL_CREATE_SH=${ZPOOL_CREATE_SH:-${pkglibexecdir}/zpool-create.sh}
+
+LDMOD=${LDMOD:-/sbin/modprobe}
+LSMOD=${LSMOD:-/sbin/lsmod}
+RMMOD=${RMMOD:-/sbin/rmmod}
+INFOMOD=${INFOMOD:-/sbin/modinfo}
+LOSETUP=${LOSETUP:-/sbin/losetup}
+SYSCTL=${SYSCTL:-/sbin/sysctl}
+UDEVADM=${UDEVADM:-/sbin/udevadm}
+AWK=${AWK:-/usr/bin/awk}
+
+die() {
+	echo -e "${PROG}: $1" >&2
+	exit 1
+}
+
+msg() {
+	if [ ${VERBOSE} ]; then
+		echo "$@"
+	fi
+}
+
+pass() {
+	echo "PASS"
+}
+
+fail() {
+	echo "FAIL ($1)"
+	exit $1
+}
+
+spl_dump_log() {
+	${SYSCTL} -w kernel.spl.debug.dump=1 &>/dev/null
+	local NAME=`dmesg | tail -n 1 | cut -f5 -d' '`
+	${SPLBUILD}/cmd/spl ${NAME} >${NAME}.log
+	echo
+	echo "Dumped debug log: ${NAME}.log"
+	tail -n1 ${NAME}.log
+	echo
+	return 0
+}
+
+check_modules() {
+	local LOADED_MODULES=()
+	local MISSING_MODULES=()
+
+	for MOD in ${MODULES[*]}; do
+		local NAME=`basename $MOD .ko`
+
+		if ${LSMOD} | egrep -q "^${NAME}"; then
+			LOADED_MODULES=(${NAME} ${LOADED_MODULES[*]})
+		fi
+
+		if [ ${INFOMOD} ${MOD} 2>/dev/null ]; then
+			MISSING_MODULES=("\t${MOD}\n" ${MISSING_MODULES[*]})
+		fi
+	done
+
+	if [ ${#LOADED_MODULES[*]} -gt 0 ]; then
+		ERROR="Unload these modules with '${PROG} -u':\n"
+		ERROR="${ERROR}${LOADED_MODULES[*]}"
+		return 1
+	fi
+
+	if [ ${#MISSING_MODULES[*]} -gt 0 ]; then
+		ERROR="The following modules can not be found,"
+		ERROR="${ERROR} ensure your source trees are built:\n"
+		ERROR="${ERROR}${MISSING_MODULES[*]}"
+		return 1
+	fi
+
+	return 0
+}
+
+load_module() {
+	local NAME=`basename $1 .ko`
+
+	if [ ${VERBOSE} ]; then
+		echo "Loading ${NAME} ($@)"
+	fi
+
+	${LDMOD} $* || ERROR="Failed to load $1" return 1
+
+	return 0
+}
+
+load_modules() {
+	mkdir -p /etc/zfs
+
+	for MOD in ${MODULES[*]}; do
+		local NAME=`basename ${MOD} .ko`
+		local VALUE=
+
+		for OPT in "$@"; do
+			OPT_NAME=`echo ${OPT} | cut -f1 -d'='`
+
+			if [ ${NAME} = "${OPT_NAME}" ]; then
+				VALUE=`echo ${OPT} | cut -f2- -d'='`
+			fi
+		done
+
+		load_module ${MOD} ${VALUE} || return 1
+	done
+
+	if [ ${VERBOSE} ]; then
+		echo "Successfully loaded ZFS module stack"
+	fi
+
+	return 0
+}
+
+unload_module() {
+	local NAME=`basename $1 .ko`
+
+	if [ ${VERBOSE} ]; then
+		echo "Unloading ${NAME} ($@)"
+	fi
+
+	${RMMOD} ${NAME} || ERROR="Failed to unload ${NAME}" return 1
+
+	return 0
+}
+
+unload_modules() {
+	local MODULES_REVERSE=( $(echo ${MODULES[@]} |
+		${AWK} '{for (i=NF;i>=1;i--) printf $i" "} END{print ""}') )
+
+	for MOD in ${MODULES_REVERSE[*]}; do
+		local NAME=`basename ${MOD} .ko`
+		local USE_COUNT=`${LSMOD} |
+				egrep "^${NAME} "| ${AWK} '{print $3}'`
+
+		if [ "${USE_COUNT}" = 0 ] ; then
+
+			if [ "${DUMP_LOG}" -a ${NAME} = "spl" ]; then
+				spl_dump_log
+			fi
+
+			unload_module ${MOD} || return 1
+		fi
+	done
+
+	if [ ${VERBOSE} ]; then
+		echo "Successfully unloaded ZFS module stack"
+	fi
+
+	return 0
+}
+
+unused_loop_device() {
+	for DEVICE in `ls -1 /dev/loop*`; do
+		${LOSETUP} ${DEVICE} &>/dev/null
+		if [ $? -ne 0 ]; then
+			echo ${DEVICE}
+			return
+		fi
+	done
+
+	die "Error: Unable to find unused loopback device"
+}
+
+#
+# This can be slightly dangerous because the loop devices we are
+# cleanup up may not be ours.  However, if the devices are currently
+# in use we will not be able to remove them, and we only remove
+# devices which include 'zpool' in the name.  So any damage we might
+# do should be limited to other zfs related testing.
+#
+cleanup_loop_devices() {
+	local TMP_FILE=`mktemp`
+
+	${LOSETUP} -a | tr -d '()' >${TMP_FILE}
+	${AWK} -F":" -v losetup="$LOSETUP" \
+	    '/zpool/ { system("losetup -d "$1) }' ${TMP_FILE}
+	${AWK} -F" " '/zpool/ { system("rm -f "$3) }' ${TMP_FILE}
+
+	rm -f ${TMP_FILE}
+}
+
+#
+# The following udev helper functions assume that the provided
+# udev rules file will create a /dev/disk/zpool/<CHANNEL><RANK>
+# disk mapping.  In this mapping each CHANNEL is represented by
+# the letters a-z, and the RANK is represented by the numbers
+# 1-n.  A CHANNEL should identify a group of RANKS which are all
+# attached to a single controller, each RANK represents a disk.
+# This provides a simply mechanism to locate a specific drive
+# given a known hardware configuration.
+#
+udev_setup() {
+	local SRC_PATH=$1
+
+	# When running in tree manually contruct symlinks in tree to
+	# the proper devices.  Symlinks are installed for all entires
+	# in the config file regardless of if that device actually
+	# exists.  When installed as a package udev can be relied on for
+	# this and it will only create links for devices which exist.
+	if [ ${INTREE} ]; then
+		PWD=`pwd`
+		mkdir -p ${DEVDIR}/
+		cd ${DEVDIR}/
+		${AWK} '!/^#/ && /./ { system( \
+			"ln -f -s /dev/disk/by-path/"$2" "$1";" \
+			"ln -f -s /dev/disk/by-path/"$2"-part1 "$1"p1;" \
+			"ln -f -s /dev/disk/by-path/"$2"-part9 "$1"p9;" \
+			) }' $SRC_PATH
+		cd ${PWD}
+	else
+		DST_FILE=`basename ${SRC_PATH} | cut -f1-2 -d'.'`
+		DST_PATH=/etc/zfs/${DST_FILE}
+
+		if [ -e ${DST_PATH} ]; then
+			die "Error: Config ${DST_PATH} already exists"
+		fi
+
+		cp ${SRC_PATH} ${DST_PATH}
+
+		if [ -f ${UDEVADM} ]; then
+			${UDEVADM} trigger
+			${UDEVADM} settle
+		else
+			/sbin/udevtrigger
+			/sbin/udevsettle
+		fi
+	fi
+
+	return 0
+}
+
+udev_cleanup() {
+	local SRC_PATH=$1
+
+	if [ ${INTREE} ]; then
+		PWD=`pwd`
+		cd ${DEVDIR}/
+		${AWK} '!/^#/ && /./ { system( \
+			"rm -f "$1" "$1"p1 "$1"p9") }' $SRC_PATH
+		cd ${PWD}
+	fi
+
+	return 0
+}
+
+udev_cr2d() {
+	local CHANNEL=`echo "obase=16; $1+96" | bc`
+	local RANK=$2
+
+	printf "\x${CHANNEL}${RANK}"
+}
+
+udev_raid0_setup() {
+	local RANKS=$1
+	local CHANNELS=$2
+	local IDX=0
+
+	RAID0S=()
+	for RANK in `seq 1 ${RANKS}`; do
+		for CHANNEL in `seq 1 ${CHANNELS}`; do
+			DISK=`udev_cr2d ${CHANNEL} ${RANK}`
+			RAID0S[${IDX}]="${DEVDIR}/${DISK}"
+			let IDX=IDX+1
+		done
+	done
+
+	return 0
+}
+
+udev_raid10_setup() {
+	local RANKS=$1
+	local CHANNELS=$2
+	local IDX=0
+
+	RAID10S=()
+	for RANK in `seq 1 ${RANKS}`; do
+		for CHANNEL1 in `seq 1 2 ${CHANNELS}`; do
+			let CHANNEL2=CHANNEL1+1
+			DISK1=`udev_cr2d ${CHANNEL1} ${RANK}`
+			DISK2=`udev_cr2d ${CHANNEL2} ${RANK}`
+			GROUP="${DEVDIR}/${DISK1} ${DEVDIR}/${DISK2}"
+			RAID10S[${IDX}]="mirror ${GROUP}"
+			let IDX=IDX+1
+		done
+	done
+
+	return 0
+}
+
+udev_raidz_setup() {
+	local RANKS=$1
+	local CHANNELS=$2
+
+	RAIDZS=()
+	for RANK in `seq 1 ${RANKS}`; do
+		RAIDZ=("raidz")
+
+		for CHANNEL in `seq 1 ${CHANNELS}`; do
+			DISK=`udev_cr2d ${CHANNEL} ${RANK}`
+			RAIDZ[${CHANNEL}]="${DEVDIR}/${DISK}"
+		done
+
+		RAIDZS[${RANK}]="${RAIDZ[*]}"
+	done
+
+	return 0
+}
+
+udev_raidz2_setup() {
+	local RANKS=$1
+	local CHANNELS=$2
+
+	RAIDZ2S=()
+	for RANK in `seq 1 ${RANKS}`; do
+		RAIDZ2=("raidz2")
+
+		for CHANNEL in `seq 1 ${CHANNELS}`; do
+			DISK=`udev_cr2d ${CHANNEL} ${RANK}`
+			RAIDZ2[${CHANNEL}]="${DEVDIR}/${DISK}"
+		done
+
+		RAIDZ2S[${RANK}]="${RAIDZ2[*]}"
+	done
+
+	return 0
+}