#!/bin/sh
-# A script to replace /bin/busybox and creates symlinks to new functions.
-# The default locations of busybox' functions (applets) are defined in the file $INSTALLDIR/functions
-# It keeps track of the installed symlinks by writing them to $INSTALLDIR/installed-symlinks in
-# a similiar fashion as locations are defined in the "functions" file.
+# A script to replace /bin/busybox and create missing symlinks to its applets.
#
-# The scripts check whether symlinks/binaries of the utilities already exist, and if not,
-# it checks whether the new busybox binary supports it. If so, it creates a symlink to /bin/busybox.
+# The target directories for BusyBox' applets are defined in the "applets" file.
+# This script will only create symbolic links when 1) they do not already exist
+# in the filesystem, and 2) the BusyBox binary supports the applet. A list of
+# all made symbolic links is written out to the file "busybox-power.symlinks",
+# which will be used during uninstallation of busybox-power.
#
-# NB The busybox binary needs to support the install applet
-
-# By Dennis Groenen <dennis_groenen@hotmail.com>
+# NB The BusyBox binary needs to support the install applet.
+#
+# By Dennis Groenen <tj.groenen@gmail.com>
# GPLv3 licensed
-
-# Version 0.3 06-03-2011 (MM-DD-YYYY)
-# 0.1: Initial release
-# 0.2: Use $EXECPWR to not have to rely on /bin/busybox' functions
-# Minor clean-ups and be quieter
-# 0.3: Add support for multiple environments
-# Make use of functions in this script
-# Implement additional checks
+#
INSTALLDIR="/opt/busybox-power"
EXECPWR="$INSTALLDIR/busybox.power"
VERBOSE="0"
-# Print extra information in verbose mode
-if test $VERBOSE == 1; then
- echo "busybox-power: verbose mode" \
- echo " binary: $EXECPWR" \
- echo " version string: `$EXECPWR | $EXECPWR head -n 1`"
-fi
-
-# Detect environment
-CHECK_ENV() {
- if test -d /scratchbox
- then
- ENVIRONMENT="SDK"
- else
- PROD=$($EXECPWR cat /proc/component_version | $EXECPWR grep product | $EXECPWR cut -d" " -f 6)
- case $PROD in
- RX-51)
- ENVIRONMENT="N900"
- ;;
- *)
- # Unsupported, use the least strict environment (SDK)
- ENVIRONMENT="SDK"
- ;;
- esac
- fi
-
- if test $VERBOSE == 1; then echo " environment: $ENVIRONMENT"; fi
-}
-
-# Environment-independent checks before continuing
-GENERIC_CHECKS() {
- #if test -n "`pgrep dpkg`" -o "`pgrep apt`"
- if ! lsof /var/lib/dpkg/lock >> /dev/null; then
- echo "error: you're running me as a stand-alone application"
- echo " do not do this, I will be called automatically upon"
- echo " installation of busybox-power"
- exit 1
- fi
+# Load shared functions
+source $INSTALLDIR/functions
- if test ! -e $INSTALLDIR/functions; then
- echo "error: cannot find list of defined functions"
+# Check whether the applets file exists
+CHECK_APPLETSFILE() {
+ if test ! -e $INSTALLDIR/applets; then
+ echo "error: cannot find list of defined applets"
exit 1
fi
+}
+# Check whether symlinks have been made before
+CHECK_SYMLINKSFILE() {
if test -e $INSTALLDIR/busybox-power.symlinks; then
echo "error: symlinks already seem to be made?"
echo " this script is not supposed to be ran twice"
fi
}
-# Additional checks for the N900
-E_N900_CHECKS() {
- if test "`$EXECPWR id -u`" -ne 0; then
- echo "error: you're not running me as root, aborting"
- echo " also, DO NOT run me as a stand-alone application"
- echo " I will be called automatically upon installation"
- echo " of busybox-power"
- exit 1
- fi
+# Create MD5 hashes of relevant binaries
+HASH_BINARIES() {
+ $EXECPWR md5sum $INSTALLDIR/busybox.power | $EXECPWR awk '{ print $1 }' \
+ > $INSTALLDIR/busybox.power.md5
+ $EXECPWR md5sum /bin/busybox | $EXECPWR awk '{ print $1 }' \
+ > $INSTALLDIR/busybox.original.md5
}
-# N900-specific code executed prior to installing the enhanced binary
-E_N900_PREINST() {
- md5sum $INSTALLDIR/busybox.power | $EXECPWR awk '{ print $1 }' > $INSTALLDIR/busybox.power.md5
- md5sum /bin/busybox | $EXECPWR awk '{ print $1 }' > $INSTALLDIR/busybox.original.md5
-
- # Check whether busybox-power isn't installed already
- INSTBINARY_MD5=`$EXECPWR cat $INSTALLDIR/busybox.power.md5`
- ORIGBINARY_MD5=`$EXECPWR cat $INSTALLDIR/busybox.original.md5`
- if test "$INSTBINARY_MD5" == "$ORIGBINARY_MD5"
- then
- echo "warning: installed busybox binary matches the binary"
- echo " that is to be installed"
- if ! test -e $INSTALLDIR/busybox.original; then
+# Backup the original BusyBox binary
+BACKUP() {
+ case $ENVIRONMENT in
+ SDK)
+ # Scratchbox does not ship with BusyBox by default
+ if test -e /bin/busybox; then
$EXECPWR cp /bin/busybox $INSTALLDIR/busybox.original; fi
- else
- $EXECPWR cp /bin/busybox $INSTALLDIR/busybox.original
- fi
+ ;;
+ FREMANTLE)
+ # Check whether busybox-power isn't somehow installed already
+ INSTBINARY_MD5=`$EXECPWR cat $INSTALLDIR/busybox.power.md5`
+ ORIGBINARY_MD5=`$EXECPWR cat $INSTALLDIR/busybox.original.md5`
+ if test "$INSTBINARY_MD5" == "$ORIGBINARY_MD5"; then
+ echo "warning: installed busybox binary matches the binary"
+ echo " that is to be installed"
+ if ! test -e $INSTALLDIR/busybox.original; then
+ $EXECPWR cp /bin/busybox $INSTALLDIR/busybox.original; fi
+ else
+ $EXECPWR cp /bin/busybox $INSTALLDIR/busybox.original
+ fi
+ ;;
+ esac
}
-# SDK-specific code executed prior to installing the enhanced binary
-E_SDK_PREINST() {
- if test -e /bin/busybox
- then
- $EXECPWR cp /bin/busybox $INSTALLDIR/busybox.original
- fi
-}
-
-# Overwrite old busybox binary with bbpower's one
+# Overwrite the installed binary with the enhanced binary
INSTALL() {
$EXECPWR cp -f $INSTALLDIR/busybox.power /bin/busybox
}
-# Creates missing symlinks to busybox' binary
+# Create missing symlinks to the enhanced binary
SYMLINK() {
- # Load defined BusyBox functions
- source $INSTALLDIR/functions
+ # Load defined BusyBox applets
+ source $INSTALLDIR/applets
- # Get a list of supported functions by the new binary
- if test -d /tmp/busybox-power; then $EXECPWR rm -Rf /tmp/busybox-power; fi
+ # Get a list of supported applets by busybox-power
+ if test -d /tmp/busybox-power; then
+ $EXECPWR rm -Rf /tmp/busybox-power; fi
$EXECPWR mkdir -p /tmp/busybox-power
- $INSTALLDIR/busybox.power --install -s /tmp/busybox-power
- $EXECPWR ls /tmp/busybox-power/ > $INSTALLDIR/functions_supported
+ $EXECPWR --install -s /tmp/busybox-power
+ $EXECPWR ls /tmp/busybox-power/ > $INSTALLDIR/applets_supported
$EXECPWR rm -Rf /tmp/busybox-power
- # Prepare file which keeps track of installed symlinks by busybox-power
+ # Prepare file that will keep track of installed symlinks by busybox-power
echo "# Automatically generated by busybox-power. DO NOT EDIT" > $INSTALLDIR/busybox-power.symlinks
echo -e "\nDESTINATIONS=\"$DESTINATIONS\"" >> $INSTALLDIR/busybox-power.symlinks
echo -e "\n# Installed symlinks" >> $INSTALLDIR/busybox-power.symlinks
# Walk through all possible destinations
- for DESTDIR in $DESTINATIONS
- do
- # Enable us to see all entries in $DESTINATION as variables
- eval "APPLICATIONS=\$$DESTDIR"
-
- # Set destination directory accordingly
- case $DESTDIR in
- DEST_BIN)
- DIR="/bin"
+ for DESTDIR in $DESTINATIONS; do
+ # Enable us to see all entries in $DESTINATION as variables
+ eval "APPLICATIONS=\$$DESTDIR"
+
+ # Set destination directory accordingly
+ case $DESTDIR in
+ DEST_BIN)
+ DIR="/bin"
;;
- DEST_SBIN)
- DIR="/sbin"
+ DEST_SBIN)
+ DIR="/sbin"
;;
- DEST_USRBIN)
- DIR="/usr/bin"
+ DEST_USRBIN)
+ DIR="/usr/bin"
;;
- DEST_USRSBIN)
- DIR="/usr/sbin"
+ DEST_USRSBIN)
+ DIR="/usr/sbin"
;;
- esac
+ esac
# Keep track of installed symlinks per destination
SYMLINKS="$DESTDIR=\""
- if test $VERBOSE == 1; then echo -e "\nSymlinking functions in $DIR"; fi
+ ECHO_VERBOSE "\nSymlinking applets in $DIR"
# Walk through all applications from the current destination
- for APP in $APPLICATIONS
- do
- # The following code is executed for every application in the current destination
- if test ! -e $DIR/$APP
- then
- # Check whether the function is supported by the busybox binary
- if `$EXECPWR grep -Fq "$APP" $INSTALLDIR/functions_supported`
- then
- if test $VERBOSE == 1; then echo Symlinking: $DIR/$APP; fi
- $EXECPWR ln -s /bin/busybox $DIR/$APP
- SYMLINKS="$SYMLINKS $APP"
- fi
+ for APP in $APPLICATIONS; do
+ # The following code is executed for all applets in the current destination
+ if test ! -e $DIR/$APP; then
+ # Check whether the applet is supported by the busybox binary
+ if `$EXECPWR grep -Fq "$APP" $INSTALLDIR/applets_supported`; then
+ ECHO_VERBOSE "Symlinking: /bin/busybox -> $DIR/$APP"
+ $EXECPWR ln -s /bin/busybox $DIR/$APP
+ SYMLINKS="$SYMLINKS $APP"
fi
+ fi
done
# Write out installed symlinks
echo "$SYMLINKS\"" >> $INSTALLDIR/busybox-power.symlinks
done
- $EXECPWR rm $INSTALLDIR/functions_supported
+ $EXECPWR rm $INSTALLDIR/applets_supported
}
### Codepath ###
-CHECK_ENV
-GENERIC_CHECKS
-case $ENVIRONMENT in
- SDK)
- E_SDK_PREINST
- ;;
- N900)
- E_N900_CHECKS
- E_N900_PREINST
- ;;
-esac
+ECHO_VERBOSE "busybox-power: verbose mode"
+ECHO_VERBOSE " binary: $EXECPWR"
+ECHO_VERBOSE " version string: `$EXECPWR | $EXECPWR head -n 1`"
+CHECK_ENV && ECHO_VERBOSE " environment: $ENVIRONMENT"
+
+CHECK_STANDALONE
+CHECK_APPLETSFILE
+CHECK_SYMLINKSFILE
+if test "$ENVIRONMENT" != "SDK"; then
+ CHECK_ROOT
+ HASH_BINARIES
+fi
+BACKUP
INSTALL
SYMLINK
projects / busybox-power / blobdiff