FL-227: Change how /etc/hosts is generated

conf.d/hostname

@@ -1,2 +1,15 @@
-# Set to the hostname of this machine
+# Set to the fully qualified domain name (e.g. "mybox.example.com") of
+# this machine, if it has one, otherwise set to the machine name
+# (e.g. "mybox").
 hostname="localhost"
+
+# Set to the NIS domain name of this machine, if it has one, otherwise
+# leave commented out.
+#nisdomainname="localdomain.com"
+
+# Set other alias-to-address mappings, if needed, otherwise leave
+# commented out.
+#aliases="127.0.0.1 mybox
+#10.0.0.1	mylaptop
+#172.16.0.1	myserver
+#192.168.0.1	myworkstation"

init.d/Makefile

@@ -1,7 +1,7 @@
 include ../mk/net.mk
 
 DIR=	${INITDIR}
-SRCS=	bootmisc.in fsck.in hostname.in local.in localmount.in loopback.in \
+SRCS=	bootmisc.in fsck.in hostname.in local.in localmount.in \
 	netmount.in root.in savecache.in swap.in swapfiles.in \
 	tmpfiles.setup.in swclock.in sysctl.in urandom.in ${SRCS-${OS}}
 BIN=	${OBJS}

init.d/hostname.in

@@ -1,18 +1,57 @@
-#!@SBINDIR@/runscript
+#!@PREFIX@/sbin/runscript
 # Copyright (c) 2007-2009 Roy Marples <roy@marples.name>
 # Released under the 2-clause BSD license.
 
 description="Sets the hostname of the machine."
 
 depend() {
-	keyword -prefix -lxc
+	need root
 }
 
 start()
 {
-	# HOSTNAME variable used to be defined in caps in conf.d/hostname.
-	# It is also a magic variable in bash.
-	hostname=${hostname-${HOSTNAME-localhost}} # checkbashisms: false positive
+	hostname=${hostname-${HOSTNAME-localhost}}
+	out=$hostname
+	short=${hostname%%.*}
+	if [ "$short" != "$hostname" ]; then
+		out="$out $short"
+	fi
+	if [ "$nisdomainname" != "" ]; then
+		ebegin "Setting NIS domain name to $nisdomainname"
+		nisdomainname $nisdomainname
+		eend $? "Failed to set the NIS domain name"
+	fi
+	if [ "$short" != "localhost" ]; then
+		out="$out localhost"
+	fi
+	if [ "$hostname" != "localhost.localdomain" ]; then
+		out="$out localhost.localdomain"
+	fi
+	[ -n "$aliases" ] && out2="$aliases"
+	ebegin "Configuring /etc/hosts"
+	cat << END > /etc/hosts
+# Local Host Database
+#
+# This AUTOMATICALLY-GENERATED file describes a number of aliases-to-address
+# mappings for the local hosts that share this file.
+#
+# In the presence of the domain name service or NIS, this file may not be
+# consulted at all; see /etc/host.conf for the resolution order.
+#
+# DO NOT EDIT THIS FILE BY HAND; YOUR CHANGES WILL BE OVERWRITTEN
+#
+# Define alias-to-address mappings in /etc/conf.d/hostname
+
+# IPv4 and IPv6 localhost aliases
+127.0.0.1	$out
+::1		$out
+
+# Other aliases
+$out2
+END
+	chmod 0644 /etc/hosts
+	eend $?
+	[ "$RC_SYS" = "LXC" ] && return 0
 	ebegin "Setting hostname to $hostname"
 	hostname "$hostname"
 	eend $? "Failed to set the hostname"

init.d/loopback.in

@@ -1,35 +0,0 @@
-#!@SBINDIR@/runscript
-# Copyright (c) 2013 William Hubbs <w.d.hubbs@gmail.com>
-# Released under the 2-clause BSD license.
-
-description="Configures the loopback interface."
-
-depend()
-{
-	keyword -jail -prefix -vserver
-}
-
-start()
-{
-	if [ "$RC_UNAME" = Linux ]; then
-		ebegin "Bringing up network interface lo"
-		if type ip > /dev/null 2>&1; then
-			ip addr add 127.0.0.1/8 dev lo brd + scope host
-			ip route add 127.0.0.0/8 dev lo scope host
-			ip link set lo up
-		else
-			ifconfig lo 127.0.0.1 netmask 255.0.0.0
-			route add -net 127.0.0.0 netmask 255.0.0.0 gw 127.0.0.1
-		fi
-	else
-		ebegin "Bringing up network interface lo0"
-		ifconfig lo0 127.0.0.1 netmask 255.0.0.0
-		route -q add -inet 127.0.0.0 -netmask 255.0.0.0 127.0.0.1
-	fi
-	eend $?
-}
-
-stop()
-{
-	return 0
-}

init.d/sysctl.Linux.in

@@ -1,11 +1,11 @@
-#!@SBINDIR@/runscript
+#!@PREFIX@/sbin/runscript
 # Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
 # Released under the 2-clause BSD license.
 
 depend()
 {
 	before bootmisc logger
-	keyword -lxc -prefix -vserver
+	keyword -lxc -vserver
 }
 
 start()
@@ -15,6 +15,14 @@ start()
 	ebegin "Configuring kernel parameters"
 	eindent
 
+	# default sysctl System V max shared memory to 1/4 of RAM:
+	mem_bytes=`awk '/MemTotal:/ { printf "%0.f",$2 * 1024}' /proc/meminfo`
+	mem_max=`expr $mem_bytes / 4`
+	page_size=`getconf PAGE_SIZE`
+	shmall=`expr $mem_bytes / $page_size`
+	sysctl kernel.shmmax=$mem_max > /dev/null
+	sysctl kernel.shmall=$shmall > /dev/null
+
 	for conf in @SYSCONFDIR@/sysctl.conf @SYSCONFDIR@/sysctl.d/*.conf; do
 		if [ -r "$conf" ]; then
 			vebegin "applying $conf"

mk/net.mk

@@ -1 +1 @@
-MKNET?= yes
+MKNET?= no

runlevels/Makefile

@@ -1,6 +1,6 @@
 include ../mk/net.mk
 
-BOOT=		bootmisc fsck hostname localmount loopback \
+BOOT=		bootmisc fsck hostname localmount \
 		root swap swapfiles sysctl urandom ${BOOT-${OS}}
 DEFAULT=	local netmount
 SHUTDOWN=	savecache ${SHUTDOWN-${OS}}