489 lines
16 KiB
Bash
Executable File
489 lines
16 KiB
Bash
Executable File
#!/bin/bash
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################################################################################
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# step: #
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# 1. get all progs in rootfs, and get libraries on which these progs depend. #
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# 2. get libraries on which these libraries(from 1st step) depend. #
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# 3. get soft-link libraries if exist. #
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# 4. remove libraries that have not been used. #
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################################################################################
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SH_NAME=$0
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OP_FLAG=$1
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ROOT_DIR=${2%/} # remove '/' at the end of of a directory path if it has.
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PROGS=$ROOT_DIR/.progs.list
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LIBS=$ROOT_DIR/.libs.list
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PARSED_FILES=$ROOT_DIR/.parsed-files.list
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DEP_LIBS_REAL=$ROOT_DIR/.depend-libs-real.list
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DEP_LIBS_REAL_TMP=$ROOT_DIR/.depend-libs-real-tmp.list
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WARNING_FILES=$ROOT_DIR/.warning_files.list
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SPECIAL_LIBS=$ROOT_DIR/.special_libs.list
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MINIGUI_RES=$ROOT_DIR/.minigui_res.list
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help_info()
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{
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# get the basename of this scripts
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local shell_name=`basename $SH_NAME`
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echo -e "v1.1\n"
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echo -e "Downsize the rootfs or check the downsizing result!\n"
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echo -e "\033[32mUsage:\n\t./$shell_name <op_flag> <root_dir>\033[0m\n"
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echo -e "\t<op_flag>: operation."
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echo -e "\t\t d - downsize rootfs"
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echo -e "\t\t c - check the downsizing result"
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echo -e "\t<root_dir>: the relative directory of your rootfs.\n"
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}
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################################################################################
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# #
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# LOG FUNCTIONS #
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# #
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################################################################################
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function pr_error()
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{
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echo -e "\033[47;31mERROR: $*\033[0m"
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}
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function pr_warn()
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{
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# echo -e "\033[47;34mWARN: $*\033[0m"
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echo -e "\033[33mWARNING \033[0m $*"
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}
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function pr_info()
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{
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# echo -e "\033[47;30mINFO: $*\033[0m"
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echo -e "\033[32mINFO \033[0m $*"
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}
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get_lib_readelf()
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{
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readelf -d $1 | grep NEEDED | sed -r 's/.*\[(.*)\].*/\1/'
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}
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get_lib_strings()
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{
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strings -a $1 | grep -e "\.so\." -e "\.so$" \
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| sed 's/ /\n/g' | sed -r 's/.*\/(.*)/\1/' | grep '\.so'
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}
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################################################################################
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# #
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# GET LIBRARIES #
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# #
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################################################################################
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# get_libs: get the library dependency of source file
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# $1 the source file.
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get_libs()
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{
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grep $1$ $PARSED_FILES > /dev/null
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if [ $? -eq 0 ]; then
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return
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fi
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echo "$1" >> $PARSED_FILES
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# readelf -s $ROOT_DIR/$prog_name | grep "\<UND dlopen\>" > /dev/null 2>&1
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grep -e dlopen -e LD_PRELOAD $1 > /dev/null
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if [ $? -eq 0 ]; then
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grep $1$ $SPECIAL_LIBS > /dev/null
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if [ $? -eq 0 ]; then
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local fdep_libs=$(get_lib_readelf $1)
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else
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local fdep_libs_readelf=$(get_lib_readelf $1)
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local fdep_libs=$(get_lib_strings $1)
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fi
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else
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local fdep_libs=$(get_lib_readelf $1)
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fi
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for ol in $fdep_libs
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do
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grep $ol$ $DEP_LIBS_REAL > /dev/null
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if [ $? -eq 0 ]; then
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continue
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fi
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local ol_real=`grep $ol$ $LIBS`
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if [ -z "$ol_real" ]; then
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if [ "x$OP_FLAG" == "xd" ]; then
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echo " "$fdep_libs_readelf" " | grep " $ol " > /dev/null
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if [ $? -eq 0 ]; then
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pr_error "file: $1， missing lib: $ol in $ROOT_DIR"
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rm -f $ROOT_DIR/.*.list
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exit
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else
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grep "^$1 $ol$" $WARNING_FILES> /dev/null
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if [ $? -ne 0 ]; then
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echo "$1 $ol" >> $WARNING_FILES
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pr_info "file: $1，MAY missing dlopen/preload lib: $ol"
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fi
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fi
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fi
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else
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echo "$ol_real" >> $DEP_LIBS_REAL
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# case: $ol -> $dst_lib, add the $dst_lib library.
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local dst_lib=`readlink $ol_real`
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if [ -n "$dst_lib" ]; then
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echo $ol_real | sed "s/$ol/$dst_lib/g" >> $DEP_LIBS_REAL
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fi
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# case: $link_lib -> $ol, add the $link_lib library.
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local link_lib=`ls -l ${ol_real%/*} | grep "^l.*$ol$" | \
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awk -F '->' '{print $1}' | awk '{print $NF}'`
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if [ -n "$link_lib" ]; then
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echo $ol_real | sed "s/$ol/$link_lib/g" >> $DEP_LIBS_REAL
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fi
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fi
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done
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}
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# get_progs_depend_libs: get libraries on which all programs depends
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get_progs_depend_libs() {
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file -F '' `find $ROOT_DIR` | \
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awk '/dynamically linked/ {print $1}' | grep -v '\.so' > $PROGS
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find $ROOT_DIR -name "*.so*" -o -name "*.a"> $LIBS
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while read prog_name
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do
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get_libs $prog_name
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done < $PROGS
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}
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################################################################################
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# #
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# FOR SPECIFIC LIBRARIES #
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# #
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################################################################################
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# get_used_libcedarx: get used cedarx libraries
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get_used_libcedarx()
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{
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if [ -f $ROOT_DIR/etc/cedarx.conf ]; then
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local used_libcedarx=`grep "^l.*.so$" \
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$ROOT_DIR/etc/cedarx.conf | awk '{print $3}'`
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for libcedarx_name in $used_libcedarx
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do
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local libcedarx_name_real=`grep $libcedarx_name$ $LIBS`
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if [ ! -f "$libcedarx_name_real" ]; then
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pr_warn "can't find $libcedarx_name (in cedarx.conf) in rootfs."
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else
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echo "$libcedarx_name_real" >> $DEP_LIBS_REAL
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fi
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done
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fi
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if [ -f $ROOT_DIR/etc/xdg/gstomx.conf ]; then
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find $ROOT_DIR/usr/lib -maxdepth 1 -name "libOmx*.so" >> $DEP_LIBS_REAL
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fi
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}
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# get_used_tslib: get used tslib
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get_used_tslib()
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{
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if [ -f $ROOT_DIR/etc/tslib-env.sh ]; then
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local used_tslib_path=$ROOT_DIR/`grep TSLIB_PLUGINDIR \
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$ROOT_DIR/etc/tslib-env.sh | awk -F = '{print $2}' | sed 's#/$##g'`
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local used_tslib=`ls -1 $used_tslib_path `
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if [ -n "$used_tslib" ]; then
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echo "$used_tslib" | \
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sed "s#^#$used_tslib_path/#g" >> $DEP_LIBS_REAL
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echo `grep libts.so.0 $LIBS` | sed 's/ /\n/g' >> $SPECIAL_LIBS
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fi
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fi
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}
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# get_used_alsa_lib: get used alsa-lib plugins
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get_used_alsa_lib()
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{
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if [ -f $ROOT_DIR/usr/lib/libasound.so.2 \
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-a -d $ROOT_DIR/usr/lib/alsa-lib ]; then
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local used_alsa_lib=`ls $ROOT_DIR/usr/lib/alsa-lib`
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if [ -n "$used_alsa_lib" ]; then
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echo "$used_alsa_lib" | \
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sed "s#^#$ROOT_DIR/usr/lib/alsa-lib/#g" >> $DEP_LIBS_REAL
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echo `grep usr/lib/libasound.so.2 $LIBS` | \
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sed 's/ /\n/g' >> $SPECIAL_LIBS
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fi
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fi
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}
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# get_used_directfb_lib: get used directfb libs
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get_used_directfb_lib()
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{
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if [ -f $ROOT_DIR/usr/lib/libdirectfb.so \
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-a -d $ROOT_DIR/usr/lib/directfb* ]; then
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local used_directfb_lib=`find $ROOT_DIR/usr/lib/directfb* -name "*.so*"`
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if [ -n "$used_directfb_lib" ]; then
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echo `grep usr/lib/libdirectfb $LIBS` | \
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sed 's/ /\n/g' >> $DEP_LIBS_REAL
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echo "$used_directfb_lib" >> $DEP_LIBS_REAL
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echo `grep usr/lib/libdirectfb $LIBS` | \
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sed 's/ /\n/g' >> $SPECIAL_LIBS
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fi
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fi
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}
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# get_used_tinatest_lib: get used tinatest libs
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get_used_tinatest_lib()
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{
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if [ -f $ROOT_DIR/usr/bin/tinatest -a -d $ROOT_DIR/usr/lib/tt-module ]; then
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local used_tinatest_lib=`find $ROOT_DIR/usr/lib/tt-module -name "*.so*"`
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if [ -n "$used_tinatest_lib" ]; then
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echo "$used_tinatest_lib" >> $DEP_LIBS_REAL
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fi
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fi
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}
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# get_used_gstreamer_lib: get used gstreamer libs
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get_used_gstreamer_lib()
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{
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find $ROOT_DIR/usr/lib -maxdepth 1 -name libgst* >> $DEP_LIBS_REAL
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if [ -d $ROOT_DIR/usr/lib/gstreamer-1.0 ]; then
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local used_gstreamer_lib=`ls $ROOT_DIR/usr/lib/gstreamer-1.0`
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if [ -n "$used_gstreamer_lib" ]; then
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echo "$used_gstreamer_lib" | \
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sed "s#^#$ROOT_DIR/usr/lib/gstreamer-1.0/#g" >> $DEP_LIBS_REAL
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fi
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fi
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}
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# get_used_eyesee_mpp_lib: get used eyesee_mpp libs
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get_used_eyesee_mpp_lib()
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{
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if [ -d $ROOT_DIR/usr/lib/eyesee-mpp ]; then
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if [ -f $ROOT_DIR/usr/lib/libglog.so ]; then
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find $ROOT_DIR/usr/lib -maxdepth 1 -name "libglog*" >> $DEP_LIBS_REAL
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fi
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if [ -f $ROOT_DIR/usr/lib/libasound.so.2 ]; then
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find $ROOT_DIR/usr/lib -maxdepth 1 -name "libasound*" >> $DEP_LIBS_REAL
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fi
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if [ -d $ROOT_DIR/usr/lib/alsa-lib ]; then
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find $ROOT_DIR/usr/lib/alsa-lib -maxdepth 1 -name "*.so" >> $DEP_LIBS_REAL
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fi
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if [ -f $ROOT_DIR/usr/lib/libVIPlite.so ]; then
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find $ROOT_DIR/usr/lib -maxdepth 1 -name "libVIPlite*" >> $DEP_LIBS_REAL
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fi
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if [ -f $ROOT_DIR/usr/lib/libVIPuser.so ]; then
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find $ROOT_DIR/usr/lib -maxdepth 1 -name "libVIPuser*" >> $DEP_LIBS_REAL
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fi
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if [ -f $ROOT_DIR/usr/lib/libawnn.so ]; then
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find $ROOT_DIR/usr/lib -maxdepth 1 -name "libawnn*" >> $DEP_LIBS_REAL
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fi
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if [ -f $ROOT_DIR/usr/lib/libawnn_full.so ]; then
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find $ROOT_DIR/usr/lib -maxdepth 1 -name "libawnn_full*" >> $DEP_LIBS_REAL
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fi
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if [ -f $ROOT_DIR/usr/lib/libawaiisp.so ]; then
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find $ROOT_DIR/usr/lib -maxdepth 1 -name "libawaiisp*" >> $DEP_LIBS_REAL
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fi
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if [ -f $ROOT_DIR/usr/lib/libexpat.so.1 ]; then
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find $ROOT_DIR/usr/lib -maxdepth 1 -name "libexpat*" >> $DEP_LIBS_REAL
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fi
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fi
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}
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# get_specific_used_libs: get the specific used libs
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get_specific_used_libs()
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{
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# for glibc, add /lib/libnss_* and libresolv*.
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# refer to https://sourceware.org/ml/libc-help/2009-05/msg00046.html
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find $ROOT_DIR/lib -maxdepth 1 -name libnss_* \
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-o -name libresolv* >> $DEP_LIBS_REAL
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get_used_libcedarx
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get_used_tslib
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get_used_alsa_lib
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get_used_directfb_lib
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get_used_tinatest_lib
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get_used_gstreamer_lib
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get_used_eyesee_mpp_lib
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}
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################################################################################
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# #
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# RECURSIVE TO GET ALL NEEDED LIBRARIES #
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# #
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################################################################################
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# get_lib_depend_libs: get the library dependency of librires.
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get_lib_depend_libs()
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{
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#keep every library only once
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sort -u $DEP_LIBS_REAL -o $DEP_LIBS_REAL
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#get lib based lib
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while true
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do
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cp -f $DEP_LIBS_REAL $DEP_LIBS_REAL_TMP
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while read ol
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do
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get_libs $ol
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done < $DEP_LIBS_REAL_TMP
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sort -u $DEP_LIBS_REAL -o $DEP_LIBS_REAL
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diff $DEP_LIBS_REAL $DEP_LIBS_REAL_TMP > /dev/null
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if [ $? -eq 0 ]; then
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break
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fi
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done
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}
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################################################################################
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# #
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# REMOVE FUNCTIONS #
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# #
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################################################################################
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downsize_prepare() {
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rm -rf $ROOT_DIR/.*.list
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touch $PROGS $LIBS $PARSED_FILES $DEP_LIBS_REAL \
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$DEP_LIBS_REAL_TMP $WARNING_FILES $SPECIAL_LIBS $MINIGUI_RES
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}
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# remove_unused_libs: remove unused libs in /lib and /usr/lib
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remove_unused_libs()
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{
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find $ROOT_DIR/lib -maxdepth 1 -name "*.so*" -o -name "*.a" > $LIBS
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find $ROOT_DIR/usr/lib -maxdepth 1 -name "*.so*" -o -name "*.a" >> $LIBS
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if [ "x$OP_FLAG" == "xd" ]; then
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rm -rf `grep -F -v -f $DEP_LIBS_REAL $LIBS | sort | uniq -u`
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fi
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if [ "x$OP_FLAG" == "xc" ]; then
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# for case $OP_FLAG is equal to 'c'
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local diff_lib=`grep -F -v -f $DEP_LIBS_REAL $LIBS | sort | uniq -u`
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if [ -n "$diff_lib" ]; then
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pr_error "following libraries have not been used:"
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echo -e "$diff_lib"
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else
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echo -e "Check result: \033[32m==RIGHT==\033[0m"
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fi
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fi
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}
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# remove_all_unused_libs: remove all unused libs in rootfs
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remove_all_unused_libs()
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{
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if [ "x$OP_FLAG" == "xd" ]; then
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rm -rf `cat $DEP_LIBS_REAL $LIBS | sort | uniq -u`
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fi
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if [ "x$OP_FLAG" == "xc" ]; then
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# for case $OP_FLAG is equal to 'c'
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local diff_lib=`cat $DEP_LIBS_REAL $LIBS | sort | uniq -u`
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if [ -n "$diff_lib" ]; then
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pr_error "following libraries have not been used:"
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echo -e "$diff_lib"
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else
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echo -e "Check result: \033[32m==RIGHT==\033[0m"
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fi
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fi
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}
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# remove_unused_res: remove unused resources
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remove_unused_res()
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{
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# rm unused minigui res
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if [ -f "$ROOT_DIR/usr/local/etc/MiniGUI.cfg" ]; then
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find $ROOT_DIR/usr/share/local/minigui -type f > $MINIGUI_RES
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local minigui_used_res=`cat $ROOT_DIR/usr/local/etc/MiniGUI.cfg | \
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grep -E '\.bmp|\.gif|\.cur|\.bin|\.ico|\.upf|\.vbf|\.name' | \
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grep -v '^#' | sed -r 's/.*=(.*)/\1/' | sed -r 's/.*\/(.*)/\1/'`
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for res_name in $minigui_used_res
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do
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sed -i "/.*\/${res_name}/d" $MINIGUI_RES
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done
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if [ "x$OP_FLAG" == "xd" ]; then
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rm -rf `cat $MINIGUI_RES`
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fi
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if [ "x$OP_FLAG" == "xc" ]; then
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if [ ! -s "$MINIGUI_RES" ]; then
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echo -e "MiniGUI Check result: \033[32m==RIGHT==\033[0m"
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fi
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fi
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fi
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}
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# downsize_rootfs: remove unused libraries and resources
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downsize_rootfs()
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{
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# remove_unused_all_libs
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remove_unused_libs
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remove_unused_res
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rm -rf $ROOT_DIR/.*.list
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}
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################################################################################
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# #
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# MAIN #
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# #
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################################################################################
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if [ $# -ne 2 ]; then
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help_info
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exit
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fi
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if [ "x$OP_FLAG" != "xd" ]; then
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if [ "x$OP_FLAG" != "xc" ]; then
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help_info
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pr_error " <op_flag>: '$OP_FLAG' should be 'd' or 'c'"
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exit
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fi
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fi
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if [ ! -d "$ROOT_DIR" ]; then
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help_info
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pr_error " <root_dir>: '$ROOT_DIR' does not exist!"
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exit
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fi
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if [ "x$OP_FLAG" == "xd" ]; then
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if [ -d "${ROOT_DIR}-tmp" ]; then
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echo "Directory ${ROOT_DIR}-tmp is exist!"
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cp -rf $ROOT_DIR/. ${ROOT_DIR}-tmp
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else
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echo "Directory ${ROOT_DIR}-tmp is not exist, back it up!"
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cp -narf $ROOT_DIR ${ROOT_DIR}-tmp
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fi
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fi
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downsize_prepare
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get_progs_depend_libs
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get_specific_used_libs
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get_lib_depend_libs
|
||
|
||
downsize_rootfs
|
||
|