Attempt at making init scripts container aware

Makefile

@@ -17,7 +17,7 @@ DESC = This package supplies the base system init scripts for sysvinit
 ARCHIVE := ''
 SRCDIR := $(PWD)/SRC/initscripts
 PATCHDIR := $(PWD)/SRC/patches
-VERSION := 1.2-0
+VERSION := 1.3-0
 
 include /usr/share/snap/Makefile.snaplinux
 

SNAP/usher

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 set -e
 
@@ -7,25 +7,22 @@ case $1 in
     exit 0
     ;;
   postinst)
-    if [[ ${TARGET} ]]; then
-      chroot ${TARGET} update-rc required
-    else
     update-rc required
+
+    if [ ! -f /etc/fstab ]; then
+      cp /usr/share/initscripts/fstab /etc/fstab
     fi
 
-    if [ ! -f ${TARGET}/etc/modules.conf ]; then
-      cp ${TARGET}/usr/share/initscripts/modules.conf \
-        ${TARGET}/etc/modules.conf
+    if [ ! -f /etc/modules.conf ]; then
+      cp /usr/share/initscripts/modules.conf /etc/modules.conf
     fi
 
-    if [ ! -f ${TARGET}/etc/default/halt ]; then
-      cp ${TARGET}/usr/share/initscripts/halt.default \
-        ${TARGET}/etc/default/halt
+    if [ ! -f /etc/default/halt ]; then
+      cp /usr/share/initscripts/halt.default /etc/default/halt
     fi
 
-    if [ ! -f ${TARGET}/etc/default/rcS ]; then
-      cp ${TARGET}/usr/share/initscripts/rcS.default \
-        ${TARGET}/etc/default/rcS
+    if [ ! -f /etc/default/rcS ]; then
+      cp /usr/share/initscripts/rcS.default /etc/default/rcS
     fi
     ;;
   prerm)

SRC/initscripts/Makefile

@@ -22,6 +22,8 @@ files:
 	install -m 755 init.d/swap $(DESTDIR)/etc/init.d/swap
 	install -m 755 init.d/sysctl $(DESTDIR)/etc/init.d/sysctl
 	install -m 755 init-functions $(DESTDIR)/lib/lsb/init-functions
+	install -m 644 fstab \
+		$(DESTDIR)/usr/share/initscripts/fstab
 	install -m 644 halt.default \
 		$(DESTDIR)/usr/share/initscripts/halt.default
 	install -m 644 modules.conf \

SRC/initscripts/fstab

@@ -0,0 +1,4 @@
+#
+# /etc/fstab - file system mount definitions
+#
+# <file system> <mount point>   <type>  <options>       <dump>  <fsck>

SRC/initscripts/init-functions

@@ -1,4 +1,14 @@
-#!/bin/sh
+# /lib/lsb/init-functions - shell functions and variables for init scripts
+
+#
+# This sets some environment variables that init scripts can use
+# to determine if we're running in a container
+#
+# Most likely just checking for the presence of $container would
+# be enough
+#
+
+export $(sed 's/\x0/\n/g' < /proc/1/environ|grep -ia '^container\|^LXC')
 
 COL52="\\033[52G"
 
@@ -54,19 +64,19 @@ log_init_msg() {
 }
 
 log_failure_msg() {
-  echo -e "$COL52[ FAIL ]"
+  echo "$COL52[ FAIL ]"
 
   return
 }
 
 log_success_msg() {
-  echo -e "$COL52[  OK  ]"
+  echo "$COL52[  OK  ]"
 
   return
 }
 
 log_warning_msg() {
-  echo -e "$COL52[ WARN ]"
+  echo "$COL52[ WARN ]"
 
   return
 }

SRC/initscripts/init.d/checkfs

@@ -13,6 +13,8 @@
 
 . /lib/lsb/init-functions
 
+[ -z $container ] || exit 0
+
 case "$1" in
   start)
     if [ -f /fastboot ] || grep -qwi 'fastboot' /proc/cmdline; then

SRC/initscripts/init.d/hwclock

@@ -16,6 +16,8 @@
 
 . /lib/lsb/init-functions
 
+[ -z $container ] || exit 0
+
 case "$UTC" in
   0|n|no)
     ZONE="--localtime"

SRC/initscripts/init.d/mountfs

@@ -17,6 +17,8 @@
 
 . /lib/lsb/init-functions
 
+[ -z $container ] || exit 0
+
 case "$1" in
   start)
     log_init_msg "Remounting root file system in read-write mode"

SRC/initscripts/init.d/mountvirtfs

@@ -80,14 +80,6 @@ mountrun () {
       /run || return 1
   fi
 
-  mkdir -p /run/lock /run/shm || return 1
-  chmod 1777 /run/shm || return 1
-
-  if grep -q '^utmp:' /etc/group; then
-    chmod 664 /run/utmp >> /run/utmp
-    chgrp utmp /run/utmp
-  fi
-
   return 0
 }
 
@@ -105,12 +97,21 @@ case "$1" in
   start|restart)
     log_init_msg "Mounting virtual file systems"
 
+    if [ -z $container ]; then
       for dir in dev pts proc run sys; do
         mount$dir || error=1
       done
+    fi
 
+    mkdir -p /run/lock /run/shm || error=1
+    chmod 1777 /run/shm || error=1
     ln -sfn /run/shm /dev/shm
       
+    if grep -q '^utmp:' /etc/group; then
+      chmod 664 /run/utmp >> /run/utmp
+      chgrp utmp /run/utmp
+    fi
+
     [ -z $error ] && log_success_msg || log_failure_msg
     ;;
   status)

SRC/initscripts/init.d/rc

@@ -26,7 +26,7 @@ case "$1" in
       set -a
       [ -r /etc/default/rcS ] && . /etc/default/rcS
       set +a
-      dmesg -n "${LOGLEVEL:-7}"
+      [ -z $container ] && dmesg -n "${LOGLEVEL:-7}"
       print_snap
     fi