introduce --with-distro=raspbian

Raspberry Pi kernel finally supports all the bits required by LXC [1]

This patch makes "./configure --with-distro=raspbian" to install lxcbr0
based config file and upstart jobs.
Also src/lxc/lxc.net now checks the existence of the lxc-dnsmasq user
(and fallbacks to dnsmasq)

RPI users still need to pass
"MIRROR=http://archive.raspbian.org/raspbian/" parameter to lxc-create
to pick the correct packages

MIRROR=http://archive.raspbian.org/raspbian/ lxc-create -t debian -n rpi

[Could be applied to stable-1.0 if you cherry-pick
7157a508ba3015b830877a5e4d6ca9debb3fd064]

[1] raspberrypi/linux#176

Signed-off-by: S.Çağlar Onur <[email protected]>
Acked-by: Serge E. Hallyn <[email protected]>

configure.ac

@@ -59,7 +59,7 @@ if test "z$with_distro" = "z"; then
 	with_distro="unknown"
 fi
 case $with_distro in
-	ubuntu)
+	ubuntu|raspbian)
 		distroconf=default.conf.ubuntu
 		;;
 	redhat|centos|fedora|oracle|oracleserver)
@@ -70,7 +70,7 @@ case $with_distro in
 		;;
 esac
 AC_MSG_RESULT([$with_distro])
-AM_CONDITIONAL([HAVE_DEBIAN], [test x"$with_distro" = "xdebian" -o x"$with_distro" = "xubuntu"])
+AM_CONDITIONAL([HAVE_DEBIAN], [test x"$with_distro" = "xdebian" -o x"$with_distro" = "xubuntu" -o x"$with_distro" = "xraspbian"])
 AM_CONDITIONAL([DISTRO_UBUNTU], [test "x$with_distro" = "xubuntu"])
 
 # Check for init system type
@@ -88,7 +88,7 @@ case "$with_init_script" in
 			redhat|centos|oracle|oracleserver)
 				init_script=sysvinit
 				;;
-			debian)
+			debian|raspbian)
 				init_script=upstart,systemd
 				;;
 			ubuntu)

src/lxc/lxc.net

@@ -59,7 +59,11 @@ start() {
 	if [ -n "$LXC_DOMAIN" ]; then
 		LXC_DOMAIN_ARG="-s $LXC_DOMAIN -S /$LXC_DOMAIN/"
 	fi
-	dnsmasq $LXC_DOMAIN_ARG -u lxc-dnsmasq --strict-order --bind-interfaces --pid-file=${varrun}/dnsmasq.pid --conf-file=${LXC_DHCP_CONFILE} --listen-address ${LXC_ADDR} --dhcp-range ${LXC_DHCP_RANGE} --dhcp-lease-max=${LXC_DHCP_MAX} --dhcp-no-override --except-interface=lo --interface=${LXC_BRIDGE} --dhcp-leasefile=/var/lib/misc/dnsmasq.${LXC_BRIDGE}.leases --dhcp-authoritative || cleanup
+	DNSMASQ_USER="lxc-dnsmasq"
+	if ! getent passwd ${DNSMASQ_USER} >/dev/null; then
+		DNSMASQ_USER="dnsmasq"
+	fi
+	dnsmasq $LXC_DOMAIN_ARG -u ${DNSMASQ_USER} --strict-order --bind-interfaces --pid-file=${varrun}/dnsmasq.pid --conf-file=${LXC_DHCP_CONFILE} --listen-address ${LXC_ADDR} --dhcp-range ${LXC_DHCP_RANGE} --dhcp-lease-max=${LXC_DHCP_MAX} --dhcp-no-override --except-interface=lo --interface=${LXC_BRIDGE} --dhcp-leasefile=/var/lib/misc/dnsmasq.${LXC_BRIDGE}.leases --dhcp-authoritative || cleanup
 	touch ${varrun}/network_up
 }