From: Michael Tremer Date: Sun, 11 Dec 2011 11:17:19 +0000 (+0100) Subject: Build preload lib to fake output of uname. X-Git-Tag: v2.9-core55~11 X-Git-Url: http://git.ipfire.org/?p=ipfire-2.x.git;a=commitdiff_plain;h=4c8608f0160f9a0e0b3cbf0adece33ac16baeeb5;ds=sidebyside Build preload lib to fake output of uname. --- diff --git a/lfs/fake-environ b/lfs/fake-environ new file mode 100644 index 0000000000..7a0f1a4d39 --- /dev/null +++ b/lfs/fake-environ @@ -0,0 +1,58 @@ +############################################################################### +# # +# IPFire.org - A linux based firewall # +# Copyright (C) 2007 Michael Tremer & Christian Schmidt # +# # +# This program is free software: you can redistribute it and/or modify # +# it under the terms of the GNU General Public License as published by # +# the Free Software Foundation, either version 3 of the License, or # +# (at your option) any later version. # +# # +# This program is distributed in the hope that it will be useful, # +# but WITHOUT ANY WARRANTY; without even the implied warranty of # +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # +# GNU General Public License for more details. # +# # +# You should have received a copy of the GNU General Public License # +# along with this program. If not, see . # +# # +############################################################################### + +############################################################################### +# Definitions +############################################################################### + +include Config + +VER = 1.0 + +THISAPP = fake-environ +DIR_APP = $(DIR_SRC)/$(THISAPP) +TARGET = $(DIR_INFO)/$(THISAPP)-tools$(PASS) + +############################################################################### +# Top-level Rules +############################################################################### + +install : $(TARGET) + +check : + +download : + +md5 : + +############################################################################### +# Installation Details +############################################################################### + +$(TARGET) : + @$(PREBUILD) + @rm -rf $(DIR_APP) + cp -rvf $(DIR_SRC)/src/$(THISAPP) $(DIR_APP) + + cd $(DIR_APP) && make install CFLAGS="$(CFLAGS)" \ + TOOLS_DIR="$(TOOLS_DIR)" + + @rm -rf $(DIR_APP) + @$(POSTBUILD) diff --git a/make.sh b/make.sh index f98d84ad25..8b9f48a2ba 100755 --- a/make.sh +++ b/make.sh @@ -37,7 +37,7 @@ KVER=`grep --max-count=1 VER lfs/linux | awk '{ print $3 }'` MACHINE=`uname -m` GIT_TAG=$(git tag | tail -1) # Git Tag GIT_LASTCOMMIT=$(git log | head -n1 | cut -d" " -f2 |head -c8) # Last commit -TOOLCHAINVER=1 +TOOLCHAINVER=2 BUILDMACHINE=$MACHINE if [ "$MACHINE" = "x86_64" ]; then @@ -242,6 +242,7 @@ buildtoolchain() { export NATIVEGCC GCCmajor=${NATIVEGCC:0:1} GCCminor=${NATIVEGCC:2:1} GCCrelease=${NATIVEGCC:4:1} ORG_PATH=$PATH export PATH=$BASEDIR/build/usr/local/bin:$BASEDIR/build/tools/bin:$PATH + lfsmake1 fake-environ PASS=1 lfsmake1 ccache PASS=1 lfsmake1 make PASS=1 lfsmake1 binutils PASS=1 @@ -253,6 +254,7 @@ buildtoolchain() { fi lfsmake1 glibc lfsmake1 cleanup-toolchain PASS=1 + lfsmake1 fake-environ PASS=2 lfsmake1 tcl lfsmake1 expect lfsmake1 dejagnu diff --git a/src/fake-environ/Makefile b/src/fake-environ/Makefile new file mode 100644 index 0000000000..a75bdf27f9 --- /dev/null +++ b/src/fake-environ/Makefile @@ -0,0 +1,31 @@ + +ifeq "$(CFLAGS)" "" + $(error CLFAGS not defined.) +endif + +ifeq "$(TOOLS_DIR)" "" + $(error TOOLS_DIR not defined.) +endif + +LIB = libpakfire_preload.so + +SOURCES = $(wildcard *.c) +OBJECTS = $(patsubst %.c,%.o,$(SOURCES)) + +.PHONY: all +all: $(LIB) + +%.o: %.c Makefile + $(CC) $(CFLAGS) -o $@ -c $< + +$(LIB): $(OBJECTS) + $(CC) $(CFLAGS) -shared -o $@ $? -ldl + +.PHONY: install +install: all + -mkdir -pv $(TOOLS_DIR)/lib/ + install -p -m 755 $(LIB) $(TOOLS_DIR)/lib + +.PHONY: clean +clean: + $(LIB) diff --git a/src/fake-environ/uname.c b/src/fake-environ/uname.c new file mode 100644 index 0000000000..2485a810f6 --- /dev/null +++ b/src/fake-environ/uname.c @@ -0,0 +1,50 @@ + + +#include +#include +#include +#include /* for EXIT_FAILURE */ +#include /* for _exit() */ +#include +#include +#include +#include +#include + +#ifndef RTLD_NEXT +#define RTLD_NEXT ((void *) -1l) +#endif + +typedef int (*uname_t)(struct utsname * buf); + +static void *get_libc_func(const char *funcname) { + char *error; + + void *func = dlsym(RTLD_NEXT, funcname); + if ((error = dlerror()) != NULL) { + fprintf(stderr, "I can't locate libc function `%s' error: %s", funcname, error); + _exit(EXIT_FAILURE); + } + + return func; +} + +int uname(struct utsname *buf) { + char *env = NULL; + + /* Call real uname to get the information we need. */ + uname_t real_uname = (uname_t)get_libc_func("uname"); + int ret = real_uname((struct utsname *) buf); + + /* Replace release if requested. */ + if ((env = getenv("UTS_RELEASE")) != NULL) { + strncpy(buf->release, env, _UTSNAME_RELEASE_LENGTH); + } + + /* Replace machine type if requested. */ + if ((env = getenv("UTS_MACHINE")) != NULL) { + strncpy(buf->machine, env, _UTSNAME_MACHINE_LENGTH); + } + + return ret; +} diff --git a/tools/make-functions b/tools/make-functions index e693ff94f9..144411cd31 100644 --- a/tools/make-functions +++ b/tools/make-functions @@ -270,10 +270,26 @@ exiterror() { exit 1 } +fake_environ() { + [ -e "${BASEDIR}/build/tools/lib/libpakfire_preload.so" ] || return + + local env="LD_PRELOAD=/tools/lib/libpakfire_preload.so" + + # Fake kernel version, because some of the packages do not compile + # with kernel 3.0 and later. + env="${env} UTS_RELEASE=${KVER}" + + # Fake machine version. + env="${env} UTS_MACHINE=${MACHINE}" + + echo "${env}" +} + entershell() { if [ ! -e $BASEDIR/build/usr/src/lfs/ ]; then exiterror "No such file or directory: $BASEDIR/build/usr/src/lfs/" fi + echo "Entering to a shell inside LFS chroot, go out with exit" $linux32 chroot $LFS /tools/bin/env -i HOME=/root TERM=$TERM PS1='\u:\w\$ ' \ PATH=/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin:/tools/bin \ @@ -288,6 +304,7 @@ entershell() { MACHINE="$MACHINE" \ MACHINE_TYPE="$MACHINE_TYPE" \ KGCC="ccache /usr/bin/gcc" \ + $(fake_environ) \ /tools/bin/bash if [ $? -ne 0 ]; then beautify message FAIL @@ -371,6 +388,7 @@ lfsmake1() { ROOT=$LFS \ KVER=$KVER \ MAKETUNING=$MAKETUNING \ + $(fake_environ) \ install >> $LOGFILE 2>&1 local COMPILE_SUCCESS=$? local PKG_TIME_END=`date +%s` @@ -401,6 +419,7 @@ lfsmake2() { KVER=$KVER MAKETUNING=$MAKETUNING \ BUILDTARGET="$BUILDTARGET" MACHINE="$MACHINE" \ MACHINE_TYPE="$MACHINE_TYPE" \ + $(fake_environ) \ /tools/bin/bash -x -c "cd /usr/src/lfs && \ make -f $* LFS_BASEDIR=/usr/src install" >>$LOGFILE 2>&1 local COMPILE_SUCCESS=$? @@ -433,6 +452,7 @@ ipfiremake() { KVER=$KVER MAKETUNING=$MAKETUNING \ BUILDTARGET="$BUILDTARGET" MACHINE="$MACHINE" \ MACHINE_TYPE="$MACHINE_TYPE" \ + $(fake_environ) \ /bin/bash -x -c "cd /usr/src/lfs && \ make -f $* LFS_BASEDIR=/usr/src install" >>$LOGFILE 2>&1 @@ -464,6 +484,7 @@ ipfiredist() { KVER=$KVER \ BUILDTARGET="$BUILDTARGET" MACHINE="$MACHINE" \ MACHINE_TYPE="$MACHINE_TYPE" \ + $(fake_environ) \ /bin/bash -x -c "cd /usr/src/lfs && \ make -f $1 LFS_BASEDIR=/usr/src dist" >>$LOGFILE 2>&1