Helper shell code for new installer

packages/base/all/vendor-config-onl/src/lib/install/lib.sh

@@ -0,0 +1,101 @@
+#!/bin/sh
+#
+######################################################################
+#
+# helper functions for install
+#
+######################################################################
+  
+installer_reboot() {
+  local dummy sts timeout trapsts
+  if test $# -gt 0; then
+    timeout=$1; shift
+  else
+    timeout=3
+  fi
+
+  installer_say "Rebooting in ${timeout}s"
+
+  unset dummy trapsts
+  # ha ha, 'local' auto-binds the variables
+
+  trap "trapsts=130" 2
+  if read -t $timeout -r -p "Hit CR to continue, CTRL-D or CTRL-C to stop... " dummy; then
+    sts=0
+  else
+    sts=$?
+  fi
+  trap - 2
+  test "$trapsts" && sts=$trapsts
+
+  if test ${dummy+set}; then
+    if test $sts -eq 0; then
+      installer_say "CR, rebooting"
+      exit
+    else
+      installer_say "CTRL-D, stopped"
+      exit
+    fi
+  fi
+
+  # ha ha, busybox does not report SIGALRM
+  if test "${trapsts+set}"; then
+    :
+  else
+    installer_say "timeout, rebooting"
+    reboot
+  fi
+
+  signo=$(( $sts - 128 ))
+  if test $signo -eq 14; then
+    # SIGALRM, possibly irrelevant for busybox
+    installer_say "timeout, rebooting"
+    reboot
+  fi
+
+  # e.g. SIGQUIT
+  installer_say "signal $signo, stopped"
+  exit
+}
+
+installer_mkchroot() {
+  local rootdir
+  rootdir=$1
+
+  # special handling for /dev, which usually already has nested mounts
+  installer_say "Setting up /dev"
+  rm -fr "${rootdir}/dev"/*
+  for dev in /dev/*; do
+    if test -d "$dev"; then
+      mkdir "${rootdir}${dev}"
+    else
+      cp -a "$dev" "${rootdir}${dev}"
+    fi
+  done
+  mkdir -p "${rootdir}/dev/pts"
+
+  installer_say "Setting up mounts"
+  mount -t proc proc "${rootdir}/proc"
+  mount -t sysfs sysfs "${rootdir}/sys"
+  mount -t devpts devpts "${rootdir}/dev/pts"
+
+  if test ${TMPDIR+set}; then
+    # make the tempdir available to the chroot
+    mkdir -p "${rootdir}${TMPDIR}"
+  fi
+
+  # export ONIE defines to the installer
+  if test -r /etc/machine.conf; then
+    cp /etc/machine.conf "${rootdir}/etc/machine.conf"
+  fi
+
+  # export firmware config
+  if test -r /etc/fw_env.config; then
+    cp /etc/fw_env.config "${rootdir}/etc/fw_env.config"
+  fi
+}
+
+# Local variables
+# mode: sh
+# sh-basic-offset: 2
+# End: