Merge pull request #11 from coldtobi/bugfixes_mmap

Bugfixes mmap

CMakeLists.txt

@@ -0,0 +1,165 @@
+cmake_minimum_required(VERSION 3.5)
+set(MT "mtrace-ng")
+project(${MT} C)
+
+set(MT_VERSION_STRING "0.8.2")
+
+option(DISABLE_CLIENT "whether to disable client support" OFF)
+
+set(default_build_type "Release")
+if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+	set(CMAKE_BUILD_TYPE "${default_build_type}" CACHE STRING "Choose type of build" FORCE)
+	set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+		"Debug" "Release" "LTO")
+endif()
+
+include(CheckFunctionExists)
+include(CheckIncludeFile)
+include(CheckIncludeFiles)
+include(CheckSymbolExists)
+
+include(${CMAKE_SOURCE_DIR}/Utilities.cmake)
+
+SET(C_SRCS
+ breakpoint.c
+ common.c
+ debug.c
+ dict.c
+ dwarf.c
+ event.c
+ library.c
+ main.c
+ mtelf.c
+ options.c
+ rbtree.c
+ report.c
+ server.c
+ task.c
+ trace.c
+)
+
+include_directories(
+ "${PROJECT_BINARY_DIR}"
+ "${PROJECT_SOURCE_DIR}"
+ "${PROJECT_SOURCE_DIR}/sysdeps"
+)
+
+set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0 -fno-omit-frame-pointer -fsanitize=address -fsanitize=undefined -D__FORITFY_SOURCE=2 -rdynamic -DDEBUG")
+set(CMAKE_LINKER_FLAGS_DEBUG "${CMAKE_LINKER_FLAGS_DEBUG} -fno-omit-frame-pointer -fsanitize=address -fsanitize=undefined")
+
+set(CMAKE_C_FLAGS_LTO "${CMAKE_C_FLAGS_RELEASE} -flto")
+set(CMAKE_EXE_LINKER_FLAGS_LTO "${CMAKE_LINKER_FLAGS_RELEASE} -flto")
+
+add_compile_options(-Wall -Wextra)
+
+if(CMAKE_C_COMPILER_ID STREQUAL "GNU" AND CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 7)
+		add_compile_options(-Wno-implicit-fallthrough)
+endif()
+
+if (NOT DISABLE_CLIENT)
+	SET(C_SRCS
+	 ${C_SRCS}
+	 client/binfile.c
+	 client/client.c
+	 client/dump.c
+	 client/job.c
+	 client/process.c
+	 client/readline.c
+	)
+
+	include_directories(
+	 "${PROJECT_SOURCE_DIR}/client"
+	)
+endif()
+
+target_architecture(TARGET_ARCH)
+if (TARGET_ARCH)
+	message(STATUS "target architecture is ${TARGET_ARCH}")
+else()
+	message(FATAL_ERROR "unknown target architecture")
+endif()
+
+if (TARGET_ARCH MATCHES "x86|x86_64")
+	set(MT_CPU "x86")
+elseif (TARGET_ARCH MATCHES "arm")
+	set(MT_CPU "arm")
+elseif (TARGET_ARCH MATCHES "powerpc")
+	set(MT_CPU "ppc")
+else()
+	message(FATAL_ERROR "unsuported target architecture: ${TARGET_ARCH}")
+endif()
+
+target_os(TARGET_OS)
+if (TARGET_OS)
+	message(STATUS "target OS is ${TARGET_OS}")
+else()
+	message(FATAL_ERROR "unknown target OS: ${TARGET_OS}")
+endif()
+
+if (TARGET_OS STREQUAL "linux")
+	set(MT_OS "linux-gnu")
+else()
+	message(FATAL_ERROR "unsuported target os ${TARGET_OS}")
+endif()
+
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(LIB_ELF REQUIRED libelf)
+
+find_and_test_library(LIB_PTHREAD pthread "pthread.h" "pthread_create")
+
+set(CMAKE_REQUIRED_DEFINITIONS "-D_GNU_SOURCE")
+find_and_test_library(LIB_DL dl "dlfcn.h" dladdr)
+unset(CMAKE_REQUIRED_DEFINITIONS)
+
+find_and_test_library(LIB_RT rt "time.h" "clock_gettime")
+
+if (NOT DISABLE_CLIENT)
+	set(CURSES_NEED_NCURSES TRUE)
+	find_package(Curses REQUIRED)
+
+	find_and_test_library(LIB_READLINE readline "stdio.h;readline/readline.h" "rl_callback_read_char")
+
+	set(CMAKE_REQUIRED_DEFINITIONS "-DPACKAGE_VERSION=${MT_VERSION_STRING} -DPACKAGE=1")
+	find_library(LIB_BFD bfd)
+	if(NOT LIB_BFD)
+		message(FATAL_ERROR "libbfd not found.")
+	endif()
+
+	find_library(LIB_IBERTY iberty)
+	if(NOT LIB_IBERTY)
+		message(FATAL_ERROR "liberty not found.")
+	endif()
+
+	pkg_check_modules(LIB_ZLIB REQUIRED zlib)	
+
+	CHECK_INCLUDE_FILES_ERROR("termcap.h" HAVE_TERMCAP_H)
+
+endif()
+
+check_function_exists(process_vm_readv HAVE_PROCESS_VM_READV)
+
+configure_file(
+ "${PROJECT_SOURCE_DIR}/config.h.in"
+ "${PROJECT_BINARY_DIR}/config.h"
+)
+
+include(${CMAKE_SOURCE_DIR}/sysdeps/${MT_OS}/sysdeps.cmake)
+
+if (LIB_ELF_INCLUDE_DIRS)
+	include_directories("${LIB_ELF_INCLUDE_DIRS}")
+endif()
+
+add_executable(${MT} ${C_SRCS})
+target_link_libraries(${MT} ${LIB_ELF_LIBRARIES} ${LIB_PTHREAD} ${LIB_DL} ${LIB_RT} ${LIB_READLINE})
+if(LIB_BFD)
+	target_compile_options(${MT} PRIVATE -DPACKAGE)
+	target_link_libraries(${MT} ${LIB_BFD} ${LIB_ZLIB_LIBRARIES} ${LIB_IBERTY})
+endif()
+target_compile_options(${MT} PUBLIC ${LIB_ELF_CFLAGS_OTHER})
+
+install(TARGETS ${PROJECT_NAME} DESTINATION bin/)
+install(FILES ${MT}.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1 COMPONENT doc)
+install(FILES ${MT}.conf.5 DESTINATION ${CMAKE_INSTALL_MANDIR}/man5 COMPONENT doc)
+
+#echo_all_cmake_variable_values()
+

Makefile.am

@@ -1,117 +0,0 @@
-# This file is part of mtrace-ng.
-# Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
-#
-# 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 2 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, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-# 02110-1301 USA
-
-ACLOCAL_AMFLAGS = -I config/m4
-
-SUBDIRS = sysdeps
-
-if !DISABLE_CLIENT
-SUBDIRS += client
-endif
-
-SUBDIRS += .
-
-AM_CPPFLAGS += \
-	$(libelf_CFLAGS) \
-	-DSYSCONFDIR=\"$(sysconfdir)\"
-
-AM_LDFLAGS +=  \
-	-Wl,--no-as-needed
-
-mtrace_ng_SOURCES = \
-	breakpoint.c \
-	common.c \
-	debug.c \
-	dict.c \
-	dwarf.c \
-	event.c \
-	library.c \
-	main.c \
-	mtelf.c \
-	options.c \
-	rbtree.c \
-	report.c \
-	server.c \
-	task.c \
-	trace.c
-
-mtrace_ng_LDADD = \
-	$(libelf_LIBS) \
-	sysdeps/libos.la
-
-if !DISABLE_CLIENT
-mtrace_ng_LDADD += libclient.la
-endif
-
-bin_PROGRAMS = \
-	mtrace-ng
-
-noinst_HEADERS = \
-	backend.h \
-	backtrace.h \
-	breakpoint.h \
-	common.h \
-	debug.h \
-	dict.h \
-	dwarf.h \
-	event.h \
-	forward.h \
-	library.h \
-	list.h \
-	main.h \
-	mtelf.h \
-	mtrace.h \
-	options.h \
-	rbtree.h \
-	report.h \
-	task.h \
-	thread.h \
-	trace.h
-
-dist_man1_MANS = mtrace-ng.1
-dist_man5_MANS = mtrace-ng.conf.5
-
-dist_doc_DATA = COPYING CREDITS INSTALL README TODO HOWTO
-
-EXTRA_DIST = 
-
-MAINTAINERCLEANFILES = \
-	configure \
-	Makefile.in \
-	aclocal.m4 \
-	config.h.in \
-	config.h.in~ \
-	config/autoconf/compile \
-	config/autoconf/config.guess \
-	config/autoconf/config.sub \
-	config/autoconf/depcomp \
-	config/autoconf/install-sh \
-	config/autoconf/ltmain.sh \
-	config/autoconf/mdate-sh \
-	config/autoconf/missing \
-	config/autoconf/texinfo.tex \
-	libtool.m4 \
-	ltoptions.m4 \
-	ltsugar.m4 \
-	ltversion.m4 \
-	lt~obsolete.m4 \
-	$(DIST_ARCHIVES)
-
-maintainer-clean-local:
-	-chmod -R a+rw $(distdir)
-	-rm -fr $(distdir)

Utilities.cmake

@@ -0,0 +1,131 @@
+function(target_architecture output_var)
+
+set(archdetect_c_code "
+#if defined(__arm__) || defined(__TARGET_ARCH_ARM) || defined(_M_ARM)
+	#error cmake_ARCH arm
+#elif defined(__aarch64__) || defined(_M_ARM64)
+	#error cmake_ARCH aarch64
+#elif defined(__i386) || defined(__i386__) || defined(_M_IX86)
+	#error cmake_ARCH x86
+#elif defined(__x86_64) || defined(x__x86_64__) || defined(__amd64) || defined(_M_X64)
+	#error cmake_ARCH x86_64
+#elif defined(__ia64) || defined(__ia64__) || defined(_M_IA64)
+	#error cmake_ARCH ia64
+#elif defined(__ppc__) || defined(__ppc) || defined(__powerpc__) || defined(_ARCH_COM) || defined(_ARCH_PWR) || defined(_ARCH_PPC) || defined(_M_MPPC) || defined(_M_PPC)
+	#if defined(__ppc64__) || defined(__powerpc64__) || defined(__64BIT__)
+		#error cmake_ARCH ppc64
+	#else
+		#error cmake_ARCH ppc
+	#endif
+#elif defined(__mips64)
+	#error cmake_ARCH mips64
+#elif defined(__mips)
+	#error cmake_ARCH mips
+#endif
+
+#error cmake_ARCH unknown
+")
+
+	set(F "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/_test_.c")
+
+	file(WRITE ${F} "${archdetect_c_code}")
+
+	enable_language(C)
+
+	try_run(
+		run_result_unused
+		compile_result_unused
+		"${CMAKE_BINARY_DIR}"
+		"${F}"
+		COMPILE_OUTPUT_VARIABLE ARCH
+		CMAKE_FLAGS CMAKE_OSX_ARCHITECTURES=${CMAKE_OSX_ARCHITECTURES}
+	)
+	file(REMOVE "${F}" "${osdetect_c_code}")
+
+	string(REGEX MATCH "cmake_ARCH ([a-zA-Z0-9_]+)" ARCH "${ARCH}")
+
+	string(REPLACE "cmake_ARCH " "" ARCH "${ARCH}")
+
+	if (NOT ARCH)
+		set(ARCH unknown)
+	endif()
+
+	set(${output_var} "${ARCH}" PARENT_SCOPE)
+endfunction()
+
+function(target_os output_var)
+
+set(osdetect_c_code "
+#if defined(_WIN32) || defined(_WIN64)
+	#error cmake_OS windows
+#elif defined(__linux) || defined(__linux__) || defined(__gnu_linux__)
+	#error cmake_OS linux
+#elif defined(__APPLE__) && defined(TARGET_OS_MAC)
+	#error cmake_OS osx
+#elif defined(__unix__)
+	#error cmake_OS unix
+#endif
+
+#error cmake_ARCH unknown
+")
+
+	set(F "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/_test_.c")
+
+	file(WRITE ${F} "${osdetect_c_code}")
+
+	enable_language(C)
+
+	try_run(
+		run_result_unused
+		compile_result_unused
+		"${CMAKE_BINARY_DIR}"
+		"${F}"
+		COMPILE_OUTPUT_VARIABLE OS
+		CMAKE_FLAGS CMAKE_OSX_ARCHITECTURES=${CMAKE_OSX_ARCHITECTURES}
+	)
+	file(REMOVE "${F}" "${osdetect_c_code}")
+
+	string(REGEX MATCH "cmake_OS ([a-zA-Z0-9_]+)" OS "${OS}")
+
+	string(REPLACE "cmake_OS " "" OS "${OS}")
+
+	if (NOT OS)
+		set(OS unknown)
+	endif()
+
+	set(${output_var} "${OS}" PARENT_SCOPE)
+endfunction()
+
+macro(CHECK_INCLUDE_FILES_ERROR INCLUDE_FILES HAVE_FILE)
+	CHECK_INCLUDE_FILES("${INCLUDE_FILES}" ${HAVE_FILE})
+	IF(NOT ${HAVE_FILE})
+		message(FATAL_ERROR "${INCLUDE_FILE} not found")
+	ENDIF()
+endmacro()
+
+function(find_library_error VAR LIB)
+	find_library(${VAR} ${LIB})
+	IF (NOT ${VAR})
+		message(FATAL_ERROR "lib ${LIB} not found")
+	ENDIF()
+endfunction()
+
+function(find_and_test_library VAR LIB INCLUDES SYM)
+	find_library_error(${VAR} "${LIB}")
+	CHECK_INCLUDE_FILES_ERROR("${INCLUDES}" _HAVE_FILE)
+	set(CMAKE_REQUIRED_LIBRARIES "${${VAR}}")
+	set(HAVE_SYM "_HAVE_SYM_${SYM}")
+	check_symbol_exists("${SYM}" "${INCLUDES}" ${HAVE_SYM})
+	IF (NOT ${HAVE_SYM})
+		message(FATAL_ERROR "symbol ${SYM} not found in library ${LIB}")
+	endif()
+endfunction()
+
+
+function(echo_all_cmake_variable_values)
+  get_cmake_property(vs VARIABLES)
+  foreach(v ${vs})
+    message(STATUS "${v}='${${v}}'")
+  endforeach(v)
+endfunction()
+

autom4te.cache/requests

@@ -1,522 +0,0 @@
-# This file was generated.
-# It contains the lists of macros which have been traced.
-# It can be safely removed.
-
-@request = (
-             bless( [
-                      '0',
-                      1,
-                      [
-                        '/usr/share/autoconf-2.69'
-                      ],
-                      [
-                        '/usr/share/autoconf-2.69/autoconf/autoconf.m4f',
-                        '-',
-                        '/usr/share/aclocal-1.15/internal/ac-config-macro-dirs.m4',
-                        '/usr/share/aclocal/libtool.m4',
-                        '/usr/share/aclocal/ltargz.m4',
-                        '/usr/share/aclocal/ltdl.m4',
-                        '/usr/share/aclocal/ltoptions.m4',
-                        '/usr/share/aclocal/ltsugar.m4',
-                        '/usr/share/aclocal/ltversion.m4',
-                        '/usr/share/aclocal/lt~obsolete.m4',
-                        '/usr/share/aclocal-1.15/amversion.m4',
-                        '/usr/share/aclocal-1.15/auxdir.m4',
-                        '/usr/share/aclocal-1.15/cond.m4',
-                        '/usr/share/aclocal-1.15/depend.m4',
-                        '/usr/share/aclocal-1.15/depout.m4',
-                        '/usr/share/aclocal-1.15/init.m4',
-                        '/usr/share/aclocal-1.15/install-sh.m4',
-                        '/usr/share/aclocal-1.15/lead-dot.m4',
-                        '/usr/share/aclocal-1.15/maintainer.m4',
-                        '/usr/share/aclocal-1.15/make.m4',
-                        '/usr/share/aclocal-1.15/missing.m4',
-                        '/usr/share/aclocal-1.15/options.m4',
-                        '/usr/share/aclocal-1.15/prog-cc-c-o.m4',
-                        '/usr/share/aclocal-1.15/runlog.m4',
-                        '/usr/share/aclocal-1.15/sanity.m4',
-                        '/usr/share/aclocal-1.15/silent.m4',
-                        '/usr/share/aclocal-1.15/strip.m4',
-                        '/usr/share/aclocal-1.15/substnot.m4',
-                        '/usr/share/aclocal-1.15/tar.m4',
-                        'configure.ac'
-                      ],
-                      {
-                        'AM_SUBST_NOTMAKE' => 1,
-                        'AC_PROG_LD' => 1,
-                        'AC_WITH_LTDL' => 1,
-                        'LT_SYS_MODULE_EXT' => 1,
-                        'AC_LIBTOOL_SYS_OLD_ARCHIVE' => 1,
-                        'AC_ENABLE_FAST_INSTALL' => 1,
-                        '_LT_PREPARE_SED_QUOTE_VARS' => 1,
-                        '_AM_PROG_TAR' => 1,
-                        'AM_INIT_AUTOMAKE' => 1,
-                        'LT_SYS_SYMBOL_USCORE' => 1,
-                        '_LT_AC_PROG_ECHO_BACKSLASH' => 1,
-                        'm4_pattern_allow' => 1,
-                        'LT_SYS_DLOPEN_SELF' => 1,
-                        'AC_LIBTOOL_COMPILER_OPTION' => 1,
-                        'AC_ENABLE_SHARED' => 1,
-                        'AC_LTDL_PREOPEN' => 1,
-                        'AM_MISSING_HAS_RUN' => 1,
-                        'LTOBSOLETE_VERSION' => 1,
-                        'LTDL_CONVENIENCE' => 1,
-                        '_LT_PATH_TOOL_PREFIX' => 1,
-                        'AC_LIBTOOL_LANG_RC_CONFIG' => 1,
-                        'AC_LIBTOOL_SETUP' => 1,
-                        'LT_PROG_RC' => 1,
-                        'LT_LIB_M' => 1,
-                        'AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE' => 1,
-                        '_LT_AC_LANG_CXX_CONFIG' => 1,
-                        'AC_LIBTOOL_SYS_DYNAMIC_LINKER' => 1,
-                        'AC_LIBTOOL_SYS_LIB_STRIP' => 1,
-                        '_LT_AC_LANG_F77_CONFIG' => 1,
-                        'AC_LTDL_OBJDIR' => 1,
-                        'm4_include' => 1,
-                        'AM_DEP_TRACK' => 1,
-                        '_LT_LINKER_BOILERPLATE' => 1,
-                        'AC_LTDL_ENABLE_INSTALL' => 1,
-                        'AM_ENABLE_STATIC' => 1,
-                        'AC_DISABLE_FAST_INSTALL' => 1,
-                        'AC_LIBTOOL_GCJ' => 1,
-                        'LTDL_INSTALLABLE' => 1,
-                        '_LT_LINKER_OPTION' => 1,
-                        'include' => 1,
-                        'LTDL_INIT' => 1,
-                        '_LT_PROG_LTMAIN' => 1,
-                        'AC_LIBTOOL_F77' => 1,
-                        'AC_DISABLE_SHARED' => 1,
-                        'AC_LIBTOOL_LANG_GCJ_CONFIG' => 1,
-                        'AM_SET_DEPDIR' => 1,
-                        'AM_AUTOMAKE_VERSION' => 1,
-                        'AC_LIB_LTDL' => 1,
-                        '_LT_AC_TAGVAR' => 1,
-                        '_LT_PROG_FC' => 1,
-                        'LT_SYS_DLOPEN_DEPLIBS' => 1,
-                        'AC_LTDL_DLSYM_USCORE' => 1,
-                        'AC_LIBTOOL_LANG_F77_CONFIG' => 1,
-                        'LT_FUNC_DLSYM_USCORE' => 1,
-                        'AC_LIBTOOL_LINKER_OPTION' => 1,
-                        'AM_RUN_LOG' => 1,
-                        'AC_LTDL_SHLIBPATH' => 1,
-                        'LTOPTIONS_VERSION' => 1,
-                        'AC_LIBTOOL_SYS_MAX_CMD_LEN' => 1,
-                        '_LT_AC_LANG_F77' => 1,
-                        '_LT_REQUIRED_DARWIN_CHECKS' => 1,
-                        '_LTDL_SETUP' => 1,
-                        'AC_LTDL_SYMBOL_USCORE' => 1,
-                        'AM_AUX_DIR_EXPAND' => 1,
-                        'AC_LIBLTDL_CONVENIENCE' => 1,
-                        '_LT_AC_CHECK_DLFCN' => 1,
-                        'AC_LIBTOOL_OBJDIR' => 1,
-                        '_AM_SUBST_NOTMAKE' => 1,
-                        'AC_LTDL_DLLIB' => 1,
-                        '_LT_AC_LANG_RC_CONFIG' => 1,
-                        '_LT_AC_LANG_GCJ_CONFIG' => 1,
-                        '_m4_warn' => 1,
-                        'AM_MISSING_PROG' => 1,
-                        'AC_LTDL_SHLIBEXT' => 1,
-                        'AC_CONFIG_MACRO_DIR' => 1,
-                        'AC_DISABLE_STATIC' => 1,
-                        '_LT_AC_PROG_CXXCPP' => 1,
-                        '_LT_PROG_F77' => 1,
-                        'AC_DEPLIBS_CHECK_METHOD' => 1,
-                        'LT_SYS_DLSEARCH_PATH' => 1,
-                        'AM_DISABLE_SHARED' => 1,
-                        'LT_CONFIG_LTDL_DIR' => 1,
-                        '_AC_PROG_LIBTOOL' => 1,
-                        'AC_LIBTOOL_DLOPEN' => 1,
-                        'AM_PROG_LIBTOOL' => 1,
-                        'AC_LIBTOOL_PROG_LD_SHLIBS' => 1,
-                        'AM_PROG_INSTALL_STRIP' => 1,
-                        '_AM_IF_OPTION' => 1,
-                        'AC_LIBTOOL_DLOPEN_SELF' => 1,
-                        '_LT_COMPILER_BOILERPLATE' => 1,
-                        'AC_CONFIG_MACRO_DIR_TRACE' => 1,
-                        'AM_SILENT_RULES' => 1,
-                        'AC_LTDL_SYSSEARCHPATH' => 1,
-                        '_LT_CC_BASENAME' => 1,
-                        'AC_PATH_TOOL_PREFIX' => 1,
-                        'AM_MAINTAINER_MODE' => 1,
-                        'm4_pattern_forbid' => 1,
-                        '_AM_MANGLE_OPTION' => 1,
-                        '_LT_AC_FILE_LTDLL_C' => 1,
-                        'AC_PROG_LD_GNU' => 1,
-                        'AM_MAKE_INCLUDE' => 1,
-                        'AC_PROG_EGREP' => 1,
-                        'LT_LANG' => 1,
-                        'LT_AC_PROG_EGREP' => 1,
-                        '_AM_DEPENDENCIES' => 1,
-                        '_LT_AC_SYS_LIBPATH_AIX' => 1,
-                        'AC_LIBTOOL_FC' => 1,
-                        'AC_LIBTOOL_CONFIG' => 1,
-                        '_LT_PROG_ECHO_BACKSLASH' => 1,
-                        'AC_PATH_MAGIC' => 1,
-                        'AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH' => 1,
-                        '_LT_COMPILER_OPTION' => 1,
-                        'LT_FUNC_ARGZ' => 1,
-                        'AM_SANITY_CHECK' => 1,
-                        'AC_DEFUN' => 1,
-                        'AC_PROG_LD_RELOAD_FLAG' => 1,
-                        'AC_LIBTOOL_PICMODE' => 1,
-                        '_LT_AC_TRY_DLOPEN_SELF' => 1,
-                        '_LT_AC_TAGCONFIG' => 1,
-                        'AC_DEFUN_ONCE' => 1,
-                        'AM_CONDITIONAL' => 1,
-                        'LT_AC_PROG_GCJ' => 1,
-                        '_LT_AC_LOCK' => 1,
-                        'AM_PROG_CC_C_O' => 1,
-                        'AC_PROG_NM' => 1,
-                        '_LT_AC_LANG_C_CONFIG' => 1,
-                        '_AM_CONFIG_MACRO_DIRS' => 1,
-                        'LT_LIB_DLLOAD' => 1,
-                        'LT_CMD_MAX_LEN' => 1,
-                        'AU_DEFUN' => 1,
-                        '_LT_AC_LANG_CXX' => 1,
-                        '_LT_DLL_DEF_P' => 1,
-                        'LT_PROG_GO' => 1,
-                        'AM_PROG_INSTALL_SH' => 1,
-                        'AC_LIBTOOL_PROG_COMPILER_PIC' => 1,
-                        'AM_DISABLE_STATIC' => 1,
-                        'AC_CHECK_LIBM' => 1,
-                        '_AM_SET_OPTIONS' => 1,
-                        'AC_LIBTOOL_WIN32_DLL' => 1,
-                        'AM_PROG_LD' => 1,
-                        '_LT_AC_SHELL_INIT' => 1,
-                        'LT_SYS_MODULE_PATH' => 1,
-                        'AC_LIBTOOL_RC' => 1,
-                        'AM_ENABLE_SHARED' => 1,
-                        '_LT_AC_LANG_GCJ' => 1,
-                        'AC_ENABLE_STATIC' => 1,
-                        '_AM_OUTPUT_DEPENDENCY_COMMANDS' => 1,
-                        '_AM_SET_OPTION' => 1,
-                        'LTVERSION_VERSION' => 1,
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autom4te.cache/traces.2

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-@%:@undef HAVE_GETCWD])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_GETTIMEOFDAY], [/* Define to 1 if you have the `gettimeofday\' function. */
-@%:@undef HAVE_GETTIMEOFDAY])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_CLOCK_GETTIME], [/* Define to 1 if you have the `clock_gettime\' function. */
-@%:@undef HAVE_CLOCK_GETTIME])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_MEMSET], [/* Define to 1 if you have the `memset\' function. */
-@%:@undef HAVE_MEMSET])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_MKDIR], [/* Define to 1 if you have the `mkdir\' function. */
-@%:@undef HAVE_MKDIR])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_RMDIR], [/* Define to 1 if you have the `rmdir\' function. */
-@%:@undef HAVE_RMDIR])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_STRCHR], [/* Define to 1 if you have the `strchr\' function. */
-@%:@undef HAVE_STRCHR])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_STRDUP], [/* Define to 1 if you have the `strdup\' function. */
-@%:@undef HAVE_STRDUP])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_STRERROR], [/* Define to 1 if you have the `strerror\' function. */
-@%:@undef HAVE_STRERROR])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_STRTOL], [/* Define to 1 if you have the `strtol\' function. */
-@%:@undef HAVE_STRTOL])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_STRTOUL], [/* Define to 1 if you have the `strtoul\' function. */
-@%:@undef HAVE_STRTOUL])
-m4trace:configure.ac:225: -1- AH_OUTPUT([HAVE_PROCESS_VM_READV], [/* Define to 1 if you have the `process_vm_readv\' function. */
-@%:@undef HAVE_PROCESS_VM_READV])
-m4trace:configure.ac:242: -1- AH_OUTPUT([HAVE_LIBRT], [/* Define to 1 if you have the `rt\' library (-lrt). */
-@%:@undef HAVE_LIBRT])
-m4trace:configure.ac:242: -1- AC_DEFINE_TRACE_LITERAL([HAVE_LIBRT])
-m4trace:configure.ac:242: -1- m4_pattern_allow([^HAVE_LIBRT$])
-m4trace:configure.ac:259: -1- AC_DEFINE_TRACE_LITERAL([DEBUG])
-m4trace:configure.ac:259: -1- m4_pattern_allow([^DEBUG$])
-m4trace:configure.ac:259: -1- AH_OUTPUT([DEBUG], [/* debugging */
-@%:@undef DEBUG])
-m4trace:configure.ac:273: -1- AC_SUBST([AM_CPPFLAGS])
-m4trace:configure.ac:273: -1- AC_SUBST_TRACE([AM_CPPFLAGS])
-m4trace:configure.ac:273: -1- m4_pattern_allow([^AM_CPPFLAGS$])
-m4trace:configure.ac:274: -1- AC_SUBST([AM_CFLAGS])
-m4trace:configure.ac:274: -1- AC_SUBST_TRACE([AM_CFLAGS])
-m4trace:configure.ac:274: -1- m4_pattern_allow([^AM_CFLAGS$])
-m4trace:configure.ac:275: -1- AC_SUBST([AM_LDFLAGS])
-m4trace:configure.ac:275: -1- AC_SUBST_TRACE([AM_LDFLAGS])
-m4trace:configure.ac:275: -1- m4_pattern_allow([^AM_LDFLAGS$])
-m4trace:configure.ac:276: -1- AC_SUBST([libelf_LD_LIBRARY_PATH])
-m4trace:configure.ac:276: -1- AC_SUBST_TRACE([libelf_LD_LIBRARY_PATH])
-m4trace:configure.ac:276: -1- m4_pattern_allow([^libelf_LD_LIBRARY_PATH$])
-m4trace:configure.ac:278: -1- AC_CONFIG_FILES([
-	Makefile
-	client/Makefile
-	sysdeps/Makefile
-	sysdeps/linux-gnu/Makefile
-	sysdeps/linux-gnu/x86/Makefile
-	sysdeps/linux-gnu/ppc/Makefile
-	sysdeps/linux-gnu/arm/Makefile
-])
-m4trace:configure.ac:287: -1- AC_SUBST([LIB@&t@OBJS], [$ac_libobjs])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([LIB@&t@OBJS])
-m4trace:configure.ac:287: -1- m4_pattern_allow([^LIB@&t@OBJS$])
-m4trace:configure.ac:287: -1- AC_SUBST([LTLIBOBJS], [$ac_ltlibobjs])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([LTLIBOBJS])
-m4trace:configure.ac:287: -1- m4_pattern_allow([^LTLIBOBJS$])
-m4trace:configure.ac:287: -1- AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])
-m4trace:configure.ac:287: -1- AC_SUBST([am__EXEEXT_TRUE])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([am__EXEEXT_TRUE])
-m4trace:configure.ac:287: -1- m4_pattern_allow([^am__EXEEXT_TRUE$])
-m4trace:configure.ac:287: -1- AC_SUBST([am__EXEEXT_FALSE])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([am__EXEEXT_FALSE])
-m4trace:configure.ac:287: -1- m4_pattern_allow([^am__EXEEXT_FALSE$])
-m4trace:configure.ac:287: -1- _AM_SUBST_NOTMAKE([am__EXEEXT_TRUE])
-m4trace:configure.ac:287: -1- _AM_SUBST_NOTMAKE([am__EXEEXT_FALSE])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([top_builddir])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([top_build_prefix])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([srcdir])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([abs_srcdir])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([top_srcdir])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([abs_top_srcdir])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([builddir])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([abs_builddir])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([abs_top_builddir])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([INSTALL])
-m4trace:configure.ac:287: -1- AC_SUBST_TRACE([MKDIR_P])
-m4trace:configure.ac:287: -1- AC_REQUIRE_AUX_FILE([ltmain.sh])

backend.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -56,8 +55,8 @@ int trace_set_options(struct task *task);
 /* make the forked process traceable */
 void trace_me(void);
 
-/* stop tracing a task.  */
+/* stop tracing of a task. */
-int untrace_task(struct task *task, int signum);
+int untrace_task(struct task *task);
 
 /* Called when mtrace-ng needs to attach to task */
 int trace_attach(struct task *task);
@@ -75,15 +74,18 @@ arch_addr_t get_instruction_pointer(struct task *task);
 void set_instruction_pointer(struct task *task, arch_addr_t addr);
 
 /* do a single step */
-int do_singlestep(struct task *task);
+int do_singlestep(struct task *task, struct  breakpoint *bp);
 
 /* handle a single step event */
-int handle_singlestep(struct task *task, int (*singlestep)(struct task *task));
+int handle_singlestep(struct task *task, int (*singlestep)(struct task *task), struct breakpoint *bp);
 
 /* Find and return caller address, i.e. the address where the current
  * function returns.  */
 arch_addr_t get_return_addr(struct task *task);
 
+/* get address of IP register */
+unsigned int ip_reg_addr(void);
+
 #if HW_BREAKPOINTS > 0
 /* returns true if the hw breakpoint is pendig */
 int get_hw_bp_state(struct task *task, unsigned int n);
@@ -174,7 +176,7 @@ void wait_event_wakeup(void);
 int is_64bit(struct mt_elf *mte);
 
 /* change user id of a running process */
-void change_uid(const char *command);
+void change_uid(void);
 
 #endif
 

backtrace.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

bootstrap

@@ -1,9 +0,0 @@
-#!/bin/sh
-make clean
-make maintainer-clean
-rm -rf config autom4te.cache
-libtoolize -c
-aclocal
-autoheader
-automake --add-missing -c
-autoconf

breakpoint.c

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -25,6 +24,7 @@
 
 #include <assert.h>
 #include <errno.h>
+#include <malloc.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -69,25 +69,37 @@ static void enable_sw_breakpoint(struct task *task, struct breakpoint *bp)
 {
 	static unsigned char break_insn[] = BREAKPOINT_VALUE;
 
+	assert(task->stopped);
+	assert(bp->sw == 0);
+	assert(bp->hw == 0);
+
 	debug(DEBUG_PROCESS, "pid=%d, addr=%#lx", task->pid, bp->addr);
 
 	copy_from_to_proc(task, bp->addr, break_insn, bp->orig_value, BREAKPOINT_LENGTH);
+
+	bp->break_insn = !memcmp(break_insn, bp->orig_value, BREAKPOINT_LENGTH);
+	bp->was_hw = 0;
+	bp->sw = 1;
+	bp->enabled = 1;
+
+	if (unlikely(options.verbose && bp->break_insn))
+		fprintf(stderr, "!!!break insn pid=%d, addr=%#lx\n", task->pid, bp->addr);
 }
 
-static void disable_sw_breakpoint(struct task *task, const struct breakpoint *bp)
+static void disable_sw_breakpoint(struct task *task, struct breakpoint *bp)
 {
 	debug(DEBUG_PROCESS, "pid=%d, addr=%lx", task->pid, bp->addr);
 
+	assert(task->stopped);
+	assert(bp->sw);
+	assert(bp->hw == 0);
+
 	copy_to_proc(task, bp->addr, bp->orig_value, BREAKPOINT_LENGTH);
+
+	bp->sw = 0;
+	bp->enabled = 0;
 }
 
-int breakpoint_on_hit(struct task *task, struct breakpoint *bp)
-{
-	if (bp->on_hit)
-		return (bp->on_hit)(task, bp);
-
-	return 0;
-}
 
 struct breakpoint *breakpoint_find(struct task *task, arch_addr_t addr)
 {
@@ -105,6 +117,7 @@ static void enable_hw_bp(struct task *task, struct breakpoint *bp)
 
 	assert(bp->type != BP_SW);
 	assert(bp->type < BP_HW || task->hw_bp[slot] == NULL);
+	assert(bp->sw == 0);
 
 	task->hw_bp[slot] = bp;
 
@@ -116,6 +129,8 @@ static void disable_hw_bp(struct task *task, struct breakpoint *bp)
 {
 	unsigned int slot = bp->hw_bp_slot;
 
+	assert(bp->sw == 0);
+
 	if (unlikely(!task->hw_bp[slot]))
 		return;
 
@@ -181,13 +196,16 @@ void reorder_hw_bp(struct task *task)
 		}
 	}
 
-	if (!n)
+	if (n < HW_BREAKPOINTS - 1) {
+		for(i = 0; i < n; ++i)
+			bp_list[i]->hwcnt = 0;
 		return;
+	}
 
 	qsort(bp_list, n, sizeof(*bp_list), hw_bp_sort);
 
 	for(i = 0; i < n; ++i)
-		bp_list[i]->hwcnt = (i < HW_BREAKPOINTS - 1) ? BP_REORDER_THRESHOLD >> (i + 4) : 0;
+		bp_list[i]->hwcnt = 0;
 
 	if (n > HW_BREAKPOINTS - 1) 
 		n = HW_BREAKPOINTS - 1;
@@ -201,9 +219,11 @@ void reorder_hw_bp(struct task *task)
 			assert((hw_bp_set & 1 << bp_list[i]->hw_bp_slot) == 0);
 
 			hw_bp_set |= 1 << bp_list[i]->hw_bp_slot;
+
+			continue;
 		}
-		else
+
-			*p++ = bp_list[i];
+		*p++ = bp_list[i];
 	}
 
 	if (p == bp_list)
@@ -227,8 +247,10 @@ void reorder_hw_bp(struct task *task)
 		if (leader->hw_bp[i])
 			hw2sw_bp(leader, leader->hw_bp[i]);
 
+		bp->enabled = 1;
 		bp->hw_bp_slot = i;
 		bp->hw = 1;
+		bp->was_hw = 1;
 
 		each_task(leader, enable_hw_bp_cb, bp);
 
@@ -259,6 +281,7 @@ static int insert_hw_bp_slot(struct task *task, struct breakpoint *bp)
 	bp->enabled = 1;
 	bp->hw_bp_slot = i;
 	bp->hw = 1;
+	bp->was_hw = 1;
 
 	each_task(leader, enable_hw_bp_cb, bp);
 
@@ -290,6 +313,9 @@ void breakpoint_hw_destroy(struct task *task)
 {
 	unsigned int i;
 
+	if (options.nohwbp)
+		return;
+
 	for(i = 0; i < HW_BREAKPOINTS; ++i)
 		task->hw_bp[i] = NULL;
 
@@ -353,9 +379,11 @@ struct breakpoint *breakpoint_new_ext(struct task *task, arch_addr_t addr, struc
 	bp->enabled = 0;
 	bp->locked = 0;
 	bp->deleted = 0;
+	bp->break_insn = 0;
 	bp->ext = ext;
 	bp->refcnt = 1;
 	bp->count = 0;
+	bp->sw = 0;
 #if HW_BREAKPOINTS > 1
 	bp->hwcnt = 0;
 #endif
@@ -373,12 +401,13 @@ struct breakpoint *breakpoint_new_ext(struct task *task, arch_addr_t addr, struc
 	case BP_AUTO:
 	case BP_HW:
 #if HW_BREAKPOINTS > 1
-	 	list_add_tail(&bp->link_list, &leader->hw_bp_list);
+		list_add_tail(&bp->link_list, &leader->hw_bp_list);
 		leader->hw_bp_num++;
 #endif
 	case BP_SW:
 		memset(bp->orig_value, 0, sizeof(bp->orig_value));
 		bp->hw = 0;
+		bp->was_hw = 0;
 	}
 
 	if (dict_add(leader->breakpoints, (unsigned long)addr, bp) < 0) {
@@ -421,7 +450,6 @@ void breakpoint_enable(struct task *task, struct breakpoint *bp)
 #endif
 		bp->hw = 0;
 		enable_sw_breakpoint(task, bp);
-		bp->enabled = 1;
 	}
 }
 
@@ -456,7 +484,6 @@ void breakpoint_disable(struct task *task, struct breakpoint *bp)
 		}
 #endif
 		disable_sw_breakpoint(task, bp);
-		bp->enabled = 0;
 	}
 }
 
@@ -501,12 +528,11 @@ void breakpoint_delete(struct task *task, struct breakpoint *bp)
 
 	if (unlikely(options.verbose > 1 && bp->libsym)) {
 		fprintf(stderr,
-			"delete %s breakpoint %s:%s [%#lx] count=%u\n",
+			"delete %s breakpoint %s:%s [%#lx]\n",
 				bp->type == BP_SW ? "sw" : "hw",
 				bp->libsym->libref->filename,
 				bp->libsym->func->demangled_name,
-				bp->addr,
+				bp->addr);
-				bp->count);
 	}
 
 	bp->deleted = 1;
@@ -517,6 +543,8 @@ void breakpoint_delete(struct task *task, struct breakpoint *bp)
 
 static int enable_nonlocked_bp_cb(unsigned long key, const void *value, void *data)
 {
+	(void)key;
+
 	struct breakpoint *bp = (struct breakpoint *)value;
 	struct task *leader = (struct task *)data;
 
@@ -538,6 +566,8 @@ void breakpoint_enable_all_nonlocked(struct task *leader)
 
 static int disable_nonlocked_bp_cb(unsigned long key, const void *value, void *data)
 {
+	(void)key;
+
 	struct breakpoint *bp = (struct breakpoint *)value;
 	struct task *leader = (struct task *)data;
 
@@ -555,7 +585,6 @@ void breakpoint_disable_all_nonlocked(struct task *leader)
 
 	if (leader->breakpoints)
 		dict_apply_to_all(leader->breakpoints, disable_nonlocked_bp_cb, leader);
-	leader->attached = 1;
 }
 
 static int enable_bp_cb(unsigned long key, const void *value, void *data)
@@ -563,6 +592,8 @@ static int enable_bp_cb(unsigned long key, const void *value, void *data)
 	struct breakpoint *bp = (struct breakpoint *)value;
 	struct task *leader = (struct task *)data;
 
+	(void)key;
+
 	debug(DEBUG_FUNCTION, "pid=%d", leader->pid);
 
 	breakpoint_enable(leader, bp);
@@ -583,6 +614,8 @@ static int disable_bp_cb(unsigned long key, const void *value, void *data)
 	struct breakpoint *bp = (struct breakpoint *)value;
 	struct task *leader = (struct task *)data;
 
+	(void)key;
+
 	debug(DEBUG_FUNCTION, "pid=%d", leader->pid);
 
 	breakpoint_disable(leader, bp);
@@ -596,7 +629,30 @@ void breakpoint_disable_all(struct task *leader)
 
 	if (leader->breakpoints)
 		dict_apply_to_all(leader->breakpoints, disable_bp_cb, leader);
-	leader->attached = 1;
+}
+
+static int invalidate_bp_cb(unsigned long key, const void *value, void *data)
+{
+	struct breakpoint *bp = (struct breakpoint *)value;
+	struct task *leader = (struct task *)data;
+
+	(void)key;
+
+	debug(DEBUG_FUNCTION, "pid=%d", leader->pid);
+
+	bp->enabled = 0;
+	bp->sw = 0;
+	bp->hw = 0;
+
+	return 0;
+}
+
+void breakpoint_invalidate_all(struct task *leader)
+{
+	debug(DEBUG_FUNCTION, "pid=%d", leader->pid);
+
+	if (leader->breakpoints)
+		dict_apply_to_all(leader->breakpoints, invalidate_bp_cb, leader);
 }
 
 static int destroy_breakpoint_cb(unsigned long key, const void *value, void *data)
@@ -604,6 +660,8 @@ static int destroy_breakpoint_cb(unsigned long key, const void *value, void *dat
 	struct breakpoint *bp = (struct breakpoint *)value;
 	struct task *leader = (struct task *)data;
 
+	(void)key;
+
 	breakpoint_delete(leader, bp);
 	return 0;
 }
@@ -612,7 +670,9 @@ void breakpoint_clear_all(struct task *leader)
 {
 	if (leader->breakpoints) {
 		dict_apply_to_all(leader->breakpoints, &destroy_breakpoint_cb, leader);
+#if HW_BREAKPOINTS > 0
 		assert(leader->hw_bp_num == 0);
+#endif
 		dict_clear(leader->breakpoints);
 		leader->breakpoints = NULL;
 	}
@@ -631,6 +691,8 @@ static int clone_single_cb(unsigned long key, const void *value, void *data)
 	struct task *new_task = (struct task *)data;
 	size_t ext = bp->ext;
 
+	(void)key;
+
 	if (bp->deleted)
 		return 0;
 
@@ -653,6 +715,7 @@ static int clone_single_cb(unsigned long key, const void *value, void *data)
 	new_bp->enabled = bp->enabled;
 	new_bp->locked = bp->locked;
 	new_bp->hw = bp->hw;
+	new_bp->sw = bp->sw;
 	new_bp->type = bp->type;
 	new_bp->ext = ext;
 	new_bp->refcnt = 1;
@@ -683,7 +746,8 @@ static int clone_single_cb(unsigned long key, const void *value, void *data)
 	}
 	else
 #endif
-	memcpy(new_bp->orig_value, bp->orig_value, sizeof(bp->orig_value));
+	if (new_bp->sw)
+		memcpy(new_bp->orig_value, bp->orig_value, sizeof(bp->orig_value));
 
 	if (ext)
 		memcpy((void *)new_bp + ext, (void *)bp + ext, ext);
@@ -720,6 +784,8 @@ int breakpoint_put(struct breakpoint *bp)
 		if (--bp->refcnt)
 			return 0;
 
+		assert(bp->enabled == 0);
+
 		free(bp);
 	}
 	return 1;

breakpoint.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -50,7 +49,10 @@ struct breakpoint {
 	unsigned int enabled:1;
 	unsigned int locked:1;
 	unsigned int deleted:1;
+	unsigned int sw:1;
 	unsigned int hw:1;
+	unsigned int was_hw:1;
+	unsigned int break_insn:1;
 	union {
 		unsigned char orig_value[BREAKPOINT_LENGTH];
 #if HW_BREAKPOINTS > 0
@@ -67,9 +69,6 @@ struct breakpoint {
 /* setup the basic breakpoint support for a given leader */
 void breakpoint_setup(struct task *leader);
 
-/* Call on-hit handler of BP, if any is set.  */
-int breakpoint_on_hit(struct task *task, struct breakpoint *bp);
-
 /* get a new breakpoint structure. */
 struct breakpoint *breakpoint_new(struct task *task, arch_addr_t addr, struct library_symbol *libsym, int type);
 
@@ -90,6 +89,7 @@ void breakpoint_disable(struct task *task, struct breakpoint *bp);
 
 void breakpoint_enable_all(struct task *leader);
 void breakpoint_disable_all(struct task *leader);
+void breakpoint_invalidate_all(struct task *leader);
 void breakpoint_enable_all_nonlocked(struct task *leader);
 void breakpoint_disable_all_nonlocked(struct task *leader);
 void breakpoint_clear_all(struct task *leader);
@@ -103,10 +103,14 @@ void disable_scratch_hw_bp(struct task *task, struct breakpoint *bp);
 #else
 static inline void enable_scratch_hw_bp(struct task *task, struct breakpoint *bp)
 {
+	(void)task;
+	(void)bp;
 }
 
 static inline void disable_scratch_hw_bp(struct task *task, struct breakpoint *bp)
 {
+	(void)task;
+	(void)bp;
 }
 #endif
 
@@ -118,10 +122,12 @@ void breakpoint_hw_destroy(struct task *task);
 #else
 static inline void breakpoint_hw_clone(struct task *task)
 {
+	(void)task;
 }
 
 static inline void breakpoint_hw_destroy(struct task *task)
 {
+	(void)task;
 }
 #endif
 

client/Makefile.am

@@ -1,33 +0,0 @@
-# This file is part of mtrace-ng.
-# Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
-#
-# 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 2 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, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-# 02110-1301 USA
-
-noinst_LTLIBRARIES = \
-	../libclient.la
-
-___libclient_la_SOURCES = \
-	binfile.c  \
-	client.c \
-	dump.c \
-	job.c \
-	process.c \
-	readline.c
-
-noinst_HEADERS = bfdinc.h binfile.h client.h dump.h job.h process.h
-
-MAINTAINERCLEANFILES = \
-	Makefile.in

client/Makefile.in

@@ -1,639 +0,0 @@
-# Makefile.in generated by automake 1.15 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994-2014 Free Software Foundation, Inc.
-
-# This Makefile.in is free software; the Free Software Foundation
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-	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
-	      install; \
-	else \
-	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
-	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
-	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
-	fi
-mostlyclean-generic:
-
-clean-generic:
-
-distclean-generic:
-	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
-	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
-	-rm -f ../$(am__dirstamp)
-
-maintainer-clean-generic:
-	@echo "This command is intended for maintainers to use"
-	@echo "it deletes files that may require special tools to rebuild."
-	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
-clean: clean-am
-
-clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
-	mostlyclean-am
-
-distclean: distclean-am
-	-rm -rf ./$(DEPDIR)
-	-rm -f Makefile
-distclean-am: clean-am distclean-compile distclean-generic \
-	distclean-tags
-
-dvi: dvi-am
-
-dvi-am:
-
-html: html-am
-
-html-am:
-
-info: info-am
-
-info-am:
-
-install-data-am:
-
-install-dvi: install-dvi-am
-
-install-dvi-am:
-
-install-exec-am:
-
-install-html: install-html-am
-
-install-html-am:
-
-install-info: install-info-am
-
-install-info-am:
-
-install-man:
-
-install-pdf: install-pdf-am
-
-install-pdf-am:
-
-install-ps: install-ps-am
-
-install-ps-am:
-
-installcheck-am:
-
-maintainer-clean: maintainer-clean-am
-	-rm -rf ./$(DEPDIR)
-	-rm -f Makefile
-maintainer-clean-am: distclean-am maintainer-clean-generic
-
-mostlyclean: mostlyclean-am
-
-mostlyclean-am: mostlyclean-compile mostlyclean-generic \
-	mostlyclean-libtool
-
-pdf: pdf-am
-
-pdf-am:
-
-ps: ps-am
-
-ps-am:
-
-uninstall-am:
-
-.MAKE: install-am install-strip
-
-.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
-	clean-libtool clean-noinstLTLIBRARIES cscopelist-am ctags \
-	ctags-am distclean distclean-compile distclean-generic \
-	distclean-libtool distclean-tags distdir dvi dvi-am html \
-	html-am info info-am install install-am install-data \
-	install-data-am install-dvi install-dvi-am install-exec \
-	install-exec-am install-html install-html-am install-info \
-	install-info-am install-man install-pdf install-pdf-am \
-	install-ps install-ps-am install-strip installcheck \
-	installcheck-am installdirs maintainer-clean \
-	maintainer-clean-generic mostlyclean mostlyclean-compile \
-	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
-	tags tags-am uninstall uninstall-am
-
-.PRECIOUS: Makefile
-
-
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:

client/bfdinc.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

client/binfile.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -26,6 +26,21 @@
 #include <link.h>
 #include <stdio.h>
 #include <string.h>
+#include <libiberty/demangle.h>
+
+#include <bfd.h>
+
+/* try to detect libfd version and set up wrapper accprdingly. */
+#ifdef  bfd_get_section_flags
+// 2.31 (and possibly earlier) has bfd_get_section_flags
+#define bfd_section_size_wrapper(_ptr, _section) bfd_section_size(_ptr, _section)
+#define bfd_section_vma_wrapper(_ptr, _section) bfd_section_vma(_ptr, _section)
+#else
+// works for 2.34
+#define bfd_get_section_flags(_unused, _section) bfd_section_flags(_section)
+#define bfd_section_size_wrapper(_unused, _section) bfd_section_size(_section)
+#define bfd_section_vma_wrapper(_unused, _section) bfd_section_vma(_section)
+#endif
 
 #include "binfile.h"
 #include "process.h"
@@ -91,10 +106,10 @@ static void find_address_in_section(bfd *abfd, asection *section, void *data __a
 	if ((bfd_get_section_flags(abfd, section) & SEC_ALLOC) == 0)
 		return;
 
-	vma = bfd_get_section_vma(abfd, section);
+	vma = bfd_section_vma_wrapper(abfd, section);
 	if (psi->pc < vma)
 		return;
-	size = bfd_section_size(abfd, section);
+	size = bfd_section_size_wrapper(abfd, section);
 	if (psi->pc >= vma + size)
 		return;
 
@@ -150,7 +165,7 @@ struct rb_sym *bin_file_lookup(struct bin_file *binfile, bfd_vma addr, unsigned
 		if (!name || !*name)
 			name = "?";
 		else {
-			alloc = bfd_demangle(binfile->abfd, name, 27);
+			alloc = bfd_demangle(binfile->abfd, name, DMGL_ANSI | DMGL_PARAMS | DMGL_RET_DROP | DMGL_AUTO);
 			if (alloc)
 				name = alloc;
 		}
@@ -288,10 +303,9 @@ void bin_file_sym_put(struct rb_sym *sym)
 	if (!--sym->refcnt) {
 		free(sym->sym);
 
-		if (!binfile)
+		if (binfile)
-			return;
+			rb_erase(&sym->node, &binfile->sym_table);
-
+		free(sym);
-		rb_erase(&sym->node, &binfile->sym_table);
 	}
 	bin_file_put(binfile);
 }

client/binfile.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

client/client.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -202,7 +202,7 @@ static int parse_config(const char *filename)
 	char *p;
 	struct stat statbuf;
 	int fd;
-	
+
 	fd = open(filename, O_RDONLY);
 	if (fd == -1)
 		fatal("could not open config file: `%s' (%s)", filename, strerror(errno));
@@ -248,10 +248,10 @@ static struct process *pid_rb_delete(struct rb_root *root, unsigned int pid)
 
 	if (data) {
 		process = data->process;
-		
+
 		rb_erase(&data->node, root);
 		free(data);
-	
+
 		return process;
 	}
 	return NULL;
@@ -364,8 +364,10 @@ static void client_remove_process(struct process *process)
 {
 	process = pid_rb_delete(&pid_table, process->pid);
 
-	if (process)
+	if (process) {
+		process_reset(process);
 		free(process);
+	}
 }
 
 
@@ -487,14 +489,15 @@ static int client_func(void)
 			process_about_exit(process);
 			break;
 		case MT_EXIT:
-			process_exit(process);
+			if (process_exit(process))
+				client_remove_process(process);
 			break;
 		case MT_NOFOLLOW:
-			process_reset(process);
 			client_remove_process(process);
 			break;
 		case MT_SCAN:
-			process_scan(process, payload, mt_msg.payload_len);
+			if (process_scan(process, payload, mt_msg.payload_len))
+				client_remove_process(process);
 			break;
 		case MT_ADD_MAP:
 			process_add_map(process, payload, mt_msg.payload_len);
@@ -503,7 +506,8 @@ static int client_func(void)
 			process_del_map(process, payload, mt_msg.payload_len);
 			break;
 		case MT_DETACH:
-			process_detach(process);
+			if (process_detach(process))
+				client_remove_process(process);
 			break;
 		default:
 			fatal("protocol violation 0x%08x", mt_msg.operation);
@@ -659,8 +663,10 @@ static void signal_exit(int sig)
 	signal(SIGINT, SIG_IGN);
 	signal(SIGTERM, SIG_IGN);
 
-	if (write(pipefd[1], &signum, 1) == -1)
+	#pragma GCC diagnostic push
-		;
+	#pragma GCC diagnostic ignored "-Wunused-result"
+	write(pipefd[1], &signum, 1);
+	#pragma GCC diagnostic pop
 }
 
 static int scan_process(struct process *process)
@@ -761,6 +767,8 @@ int client_start(void)
 
 void *client_thread(void *unused)
 {
+	(void)unused;
+
 	if (options.interactive) {
 		ioevent_add_input(client_fd, client_func);
 
@@ -807,7 +815,7 @@ int client_send_msg(struct process *process, enum mt_operation op, void *payload
 
 	ret = sock_send_msg(client_fd, process->val16(op), process->pid, payload, payload_len);
 
- 	if (ret < 0)
+	if (ret < 0)
 		client_broken();
 	return ret;
 }
@@ -824,6 +832,7 @@ int client_stop(void)
 {
 	if (thread) {
 		thread_join(thread);
+		free(thread);
 		thread = NULL;
 	}
 

client/client.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

client/dump.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -112,7 +112,7 @@ static int dump_pager(void)
 	struct termios termios_old;
 	int len;
 	ioevent_func oldfunc;
-	
+
 	len = printf("Press <space> for next line, q for quit and any other for next page\r") - 1;
 	fflush(stdout);
 
@@ -194,7 +194,7 @@ static int dump_line(char *s, int n)
 	}
 	return 0;
 }
-			
+
 int dump_printf(const char *fmt, ...)
 {
 	char *str;

client/dump.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

client/job.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

client/job.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

client/process.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -72,6 +72,7 @@ struct rb_stack {
 	unsigned long long bytes_leaked;
 	unsigned long long tsc;
 	unsigned long long n_mismatched;
+	unsigned long long n_badfree;
 };
 
 struct map {
@@ -79,6 +80,7 @@ struct map {
 	unsigned long offset;
 	unsigned long addr;
 	unsigned long size;
+	unsigned long bias;
 	char *filename;
 	struct bin_file *binfile;
 	unsigned int ignore:1;
@@ -90,8 +92,7 @@ struct realloc_entry {
 	unsigned long addr;
 	unsigned long size;
 	unsigned long flags;
-	struct rb_stack *stack;
+	struct rb_stack *stack_node;
-	enum mt_operation operation;
 };
 
 struct regex_list {
@@ -347,7 +348,7 @@ static struct rb_sym *resolv_address(struct process *process, bfd_vma addr)
 	struct map *map = open_map(process, addr);
 
 	if (map) {
-		sym = bin_file_lookup(map->binfile, addr, map->addr);
+		sym = bin_file_lookup(map->binfile, addr, map->bias);
 		if (sym)
 			return sym;
 	}
@@ -422,6 +423,7 @@ static void stack_put(struct rb_stack *stack_node)
 			for(i = 0; i < stack->entries; ++i)
 				bin_file_sym_put(stack->syms[i]);
 
+			free(stack->addrs);
 			free(stack->syms);
 		}
 		free(stack);
@@ -459,6 +461,7 @@ static struct rb_stack *stack_clone(struct process *process, struct rb_stack *st
 	this->leaks = stack_node->leaks;
 	this->n_allocations = stack_node->n_allocations;
 	this->n_mismatched = stack_node->n_mismatched;
+	this->n_badfree = stack_node->n_badfree;
 	this->total_allocations = stack_node->total_allocations;
 	this->bytes_used = stack_node->bytes_used;
 	this->bytes_leaked = stack_node->bytes_leaked;
@@ -476,7 +479,7 @@ static struct rb_stack *stack_clone(struct process *process, struct rb_stack *st
 	return this;
 }
 
-static struct rb_stack *stack_add(struct process *process, unsigned int pid, void *addrs, uint32_t stack_size, enum mt_operation operation)
+static struct rb_stack *stack_add(struct process *process, void *addrs, uint32_t stack_size, enum mt_operation operation)
 {
 	struct rb_root *root = &process->stack_table;
 	struct rb_node **new = &(root->rb_node), *parent = NULL;
@@ -526,6 +529,7 @@ static struct rb_stack *stack_add(struct process *process, unsigned int pid, voi
 	this->refcnt = 0;
 	this->n_allocations = 0;
 	this->n_mismatched = 0;
+	this->n_badfree = 0;
 	this->total_allocations = 0;
 	this->bytes_used = 0;
 	this->leaks = 0;
@@ -600,7 +604,7 @@ static struct rb_block *process_rb_search_range(struct rb_root *root, unsigned l
 	while (node) {
 		struct rb_block *this = container_of(node, struct rb_block, node);
 
-		if (addr <= this->addr && addr + size > this->addr)
+		if ((this->addr <= addr) && (this->addr + this->size > addr))
 			return this;
 
 		if (addr < this->addr)
@@ -618,7 +622,7 @@ static struct rb_block *process_rb_search(struct rb_root *root, unsigned long ad
 	while (node) {
 		struct rb_block *this = container_of(node, struct rb_block, node);
 
-		if (addr >= this->addr && addr < this->addr + (this->size ? this->size : 1))
+		if (addr == this->addr)
 			return this;
 
 		if (addr < this->addr)
@@ -629,23 +633,6 @@ static struct rb_block *process_rb_search(struct rb_root *root, unsigned long ad
 	return NULL;
 }
 
-static struct rb_block *process_rb_block(struct rb_root *root, unsigned long addr)
-{
-	struct rb_node *node = root->rb_node;
-
-	while (node) {
-		struct rb_block *this = container_of(node, struct rb_block, node);
-
-		if (addr < this->addr)
-			node = node->rb_left;
-		else if (addr > this->addr)
-			node = node->rb_right;
-		else
-			return this;
-	}
-	return NULL;
-}
-
 static void process_release_mem(struct process *process, struct rb_block *block, unsigned int size)
 {
 	if (block->flags & BLOCK_LEAKED) {
@@ -693,10 +680,10 @@ static int process_rb_insert_block(struct process *process, unsigned long addr,
 
 		parent = *new;
 
-		if (addr <= this->addr && addr + n > this->addr) {
+		if ((addr <= this->addr) && (addr + n > this->addr)) {
 			process_dump_collision(process, this, addr, size, operation);
 
-			if (options.kill)
+			if (unlikely(options.kill))
 				abort();
 		}
 
@@ -729,13 +716,14 @@ static int process_rb_insert_block(struct process *process, unsigned long addr,
 	return 0;
 }
 
-static struct map *_process_add_map(struct process *process, unsigned long addr, unsigned long offset, unsigned long size, const char *filename, size_t len, struct bin_file *binfile)
+static struct map *_process_add_map(struct process *process, unsigned long addr, unsigned long offset, unsigned long size, unsigned long bias, const char *filename, size_t len, struct bin_file *binfile)
 {
 	struct map *map = malloc(sizeof(*map));
 
 	map->addr = addr;
 	map->offset = offset;
 	map->size = size;
+	map->bias = bias;
 	map->filename = malloc(len + 1);
 	map->binfile = binfile;
 	map->ignore = 0;
@@ -764,8 +752,9 @@ void process_add_map(struct process *process, void *payload, uint32_t payload_le
 	uint64_t addr = process->val64(mt_map->addr);
 	uint64_t offset = process->val64(mt_map->offset);
 	uint64_t size = process->val64(mt_map->size);
+	uint64_t bias = process->val64(mt_map->bias);
 
-	_process_add_map(process, addr, offset, size, mt_map->filename, payload_len - sizeof(*mt_map), NULL);
+	_process_add_map(process, addr, offset, size, bias, mt_map->filename, payload_len - sizeof(*mt_map), NULL);
 }
 
 static void _process_del_map(struct map *map)
@@ -786,6 +775,8 @@ void process_del_map(struct process *process, void *payload, uint32_t payload_le
 	uint64_t size = process->val64(mt_map->size);
 	struct list_head *it;
 
+	(void)payload_len;
+
 	list_for_each(it, &process->map_list) {
 		struct map *map = container_of(it, struct map, list);
 
@@ -823,7 +814,8 @@ static void process_init(struct process *process, unsigned int swap_endian, unsi
 
 static void realloc_del(struct realloc_entry *re)
 {
-	stack_put(re->stack);
+	if (re->stack_node)
+		stack_put(re->stack_node);
 	list_del(&re->list);
 	free(re);
 }
@@ -921,7 +913,7 @@ void process_duplicate(struct process *process, struct process *copy)
 	list_for_each(it, &copy->map_list) {
 		struct map *map = container_of(it, struct map, list);
 
-		_process_add_map(process, map->addr, map->offset, map->size, map->filename, strlen(map->filename), map->binfile);
+		_process_add_map(process, map->addr, map->offset, map->size, map->bias, map->filename, strlen(map->filename), map->binfile);
 	}
 
 	process->total_allocations = copy->total_allocations;
@@ -937,7 +929,16 @@ static int sort_tsc(const struct rb_stack **p, const struct rb_stack **q)
 	return 0;
 }
 
-static int sort_mismatched(const struct rb_stack **p, const struct rb_stack **q)
+static int _sort_badfree(const struct rb_stack **p, const struct rb_stack **q)
+{
+	if ((*p)->n_badfree > (*q)->n_badfree)
+		return -1;
+	if ((*p)->n_badfree < (*q)->n_badfree)
+		return 1;
+	return 0;
+}
+
+static int _sort_mismatched(const struct rb_stack **p, const struct rb_stack **q)
 {
 	if ((*p)->n_mismatched > (*q)->n_mismatched)
 		return -1;
@@ -946,6 +947,26 @@ static int sort_mismatched(const struct rb_stack **p, const struct rb_stack **q)
 	return 0;
 }
 
+static int sort_badfree(const struct rb_stack **p, const struct rb_stack **q)
+{
+	int ret;
+
+	ret = _sort_badfree(p, q);
+	if (ret)
+		return ret;
+	return _sort_mismatched(p, q);
+}
+
+static int sort_mismatched(const struct rb_stack **p, const struct rb_stack **q)
+{
+	int ret;
+
+	ret = _sort_mismatched(p, q);
+	if (ret)
+		return ret;
+	return _sort_badfree(p, q);
+}
+
 static int sort_usage(const struct rb_stack **p, const struct rb_stack **q)
 {
 	if ((*p)->bytes_used > (*q)->bytes_used)
@@ -1014,7 +1035,7 @@ static int sort_total(const struct rb_stack **p, const struct rb_stack **q)
 
 static void _process_dump(struct process *process, int (*sortby)(const struct rb_stack **, const struct rb_stack **), int (*skipfunc)(struct rb_stack *), FILE *file, int lflag)
 {
-	struct rb_stack **arr;
+	struct rb_stack **arr = NULL;
 	unsigned long i;
 	void *data;
 	unsigned long stack_trees = process->stack_trees;
@@ -1024,9 +1045,12 @@ static void _process_dump(struct process *process, int (*sortby)(const struct rb
 	if (dump_init(file) == -1)
 		return;
 
+	if (!stack_trees)
+		goto skip;
+
 	arr = malloc(sizeof(struct rb_stack *) * stack_trees);
 	if (!arr)
-		return;
+		goto skip;
 
 	for(i = 0, data = rb_first(&process->stack_table); data; data = rb_next(data)) {
 		struct rb_stack *stack_node = container_of(data, struct rb_stack, node);
@@ -1039,9 +1063,6 @@ static void _process_dump(struct process *process, int (*sortby)(const struct rb
 
 	dump_printf("Process dump %d %s\n", process->pid, process->filename ? process->filename : "<unknown>");
 
-	if (!stack_trees)
-		goto skip;
-
 	qsort(arr, stack_trees, sizeof(struct rb_stack *), (void *)sortby);
 
 	if (file == stderr) {
@@ -1060,7 +1081,18 @@ static void _process_dump(struct process *process, int (*sortby)(const struct rb
 		struct rb_stack *stack = arr[i];
 
 		if (!skipfunc(stack)) {
-			if (!stack->n_mismatched) {
+			if (stack->n_mismatched || stack->n_badfree) {
+				if (dump_printf(
+					"Stack (%s):\n"
+					" total number of mismatches: %llu\n"
+					" total number of bad free: %llu\n",
+						str_operation(stack->stack->operation),
+						stack->n_mismatched,
+						stack->n_badfree
+				) == -1)
+					break;
+			}
+			else {
 				if (dump_printf(
 					"Stack (%s):\n"
 					" bytes used: %llu\n"
@@ -1078,15 +1110,6 @@ static void _process_dump(struct process *process, int (*sortby)(const struct rb
 						break;
 				}
 			}
-			else {
-				if (dump_printf(
-					"Stack (%s):\n"
-					" total number of mismatches: %llu\n",
-						str_operation(stack->stack->operation),
-						stack->n_mismatched
-				) == -1)
-					break;
-			}
 
 			if (dump_printf(" tsc: %llu\n", stack->tsc) == -1)
 				break;
@@ -1123,6 +1146,8 @@ static void process_dump(struct process *process, int (*sortby)(const struct rb_
 
 static int skip_none(struct rb_stack *stack)
 {
+	(void)stack;
+
 	return 0;
 }
 
@@ -1131,11 +1156,6 @@ static int skip_zero_allocations(struct rb_stack *stack)
 	return !stack->n_allocations;
 }
 
-static int skip_non_mismatched(struct rb_stack *stack)
-{
-	return !stack->n_mismatched;
-}
-
 static int skip_zero_leaks(struct rb_stack *stack)
 {
 	return !stack->leaks;
@@ -1178,7 +1198,12 @@ void process_dump_sort_tsc(struct process *process, const char *outfile, int lfl
 
 void process_dump_sort_mismatched(struct process *process, const char *outfile, int lflag)
 {
-	process_dump(process, sort_mismatched, skip_non_mismatched, outfile, lflag);
+	process_dump(process, sort_mismatched, skip_none, outfile, lflag);
+}
+
+void process_dump_sort_badfree(struct process *process, const char *outfile, int lflag)
+{
+	process_dump(process, sort_badfree, skip_none, outfile, lflag);
 }
 
 void process_dump_stacks(struct process *process, const char *outfile, int lflag)
@@ -1186,7 +1211,7 @@ void process_dump_stacks(struct process *process, const char *outfile, int lflag
 	process_dump(process, sort_allocations, skip_none, outfile, lflag);
 }
 
-void *process_scan(struct process *process, void *leaks, uint32_t payload_len)
+int process_scan(struct process *process, void *leaks, uint32_t payload_len)
 {
 	unsigned int new = 0;
 	unsigned long n = payload_len / process->ptr_size;
@@ -1194,7 +1219,7 @@ void *process_scan(struct process *process, void *leaks, uint32_t payload_len)
 	void *new_leaks = leaks;
 
 	for(i = 0; i < n; ++i) {
-		struct rb_block *block = process_rb_block(&process->block_table, process->get_ulong(leaks));
+		struct rb_block *block = process_rb_search(&process->block_table, process->get_ulong(leaks));
 
 		if (block && !(block->flags & BLOCK_LEAKED)) {
 			block->flags |= BLOCK_LEAKED;
@@ -1218,10 +1243,12 @@ void *process_scan(struct process *process, void *leaks, uint32_t payload_len)
 	dump_printf(" leaked bytes: %llu\n", process->leaked_bytes);
 
 	for(i = 0; i < new; ++i) {
-		struct rb_block *block = process_rb_block(&process->block_table, process->get_ulong(new_leaks));
+		struct rb_block *block = process_rb_search(&process->block_table, process->get_ulong(new_leaks));
 
-		if (dump_printf(" leaked at 0x%08lx (%lu bytes)\n", (unsigned long)block->addr, (unsigned long)block->size) == -1)
+		if (options.verbose > 1) {
-			break;
+			if (dump_printf(" leaked at 0x%08lx (%lu bytes)\n", (unsigned long)block->addr, (unsigned long)block->size) == -1)
+				break;
+		}
 
 		new_leaks += process->ptr_size;
 	}
@@ -1229,10 +1256,12 @@ void *process_scan(struct process *process, void *leaks, uint32_t payload_len)
 	dump_printf("leaks total: %lu\n", process->leaks);
 	dump_flush();
 
-	if (!options.interactive)
+	if (!options.interactive) {
 		process_dump_sortby(process);
+		return 1;
+	}
 
-	return leaks;
+	return 0;
 }
 
 static inline unsigned long roundup_mask(unsigned long val, unsigned long mask)
@@ -1269,20 +1298,32 @@ void process_munmap(struct process *process, struct mt_msg *mt_msg, void *payloa
 
 	do {
 		block = process_rb_search_range(&process->block_table, ptr, size);
-		if (!block)
-			break;
 
-		if (!is_mmap(block->stack_node->stack->operation)) {
+		if (block && !is_mmap(block->stack_node->stack->operation)) {
-			fprintf(stderr, ">>> block missmatch pid:%d MAP<>MALLOC %#lx\n", process->pid, ptr);
+			// ignore blocks not mmap'ed
-
+			block = NULL;
-			if (options.kill)
-				abort();
-
-			break;
 		}
 
+		if (!block) {
+			// printf("## no block found for %lx, %ld. Trying next page\n", ptr, size);
+			// it is legal to unmap arbitrary addresses, so ptr might be actually before the mmap and it might span muplitple mmaps areas.
+			// so we'll might need to search our blocks.
+			// eg this is legal: void* p=mmap(0,512*1024, PROT_WRITE|PROT_READ,  MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); munmap(p+4096,4096); munmap(p-4096, 512*1024+4096);
+			// FIXME pagesize is hardcoded as 4096 bytes, which should be safe (AFAIK 4k is the minimum "out there".) A more efficient way would be to transmit
+			// the target's PAGE_SIZE on startup.
+			if (size > 4096) {
+				size -= 4096;
+				ptr += 4096;
+				continue;
+			}
+			else {
+				break;
+			}
+		}
+
+		//  ptr in block -- this is already checked.
 		if (block->addr >= ptr) {
-			unsigned off = block->addr - ptr;
+			unsigned long off = block->addr - ptr;
 
 			size -= off;
 			ptr += off;
@@ -1302,33 +1343,32 @@ void process_munmap(struct process *process, struct mt_msg *mt_msg, void *payloa
 			process_rb_delete_block(process, block);
 		}
 		else {
-			unsigned off = ptr - block->addr;
+			unsigned long off = ptr - block->addr;
 
 			if (off + size < block->size) {
 				unsigned long new_addr = block->addr + (off + size);
 				unsigned long new_size = block->size - (off + size);
 
-				process_release_mem(process, block, block->size - off - new_size);
+				process_release_mem(process, block, block->size - off);
 
 				block->size = off;
 
 				if (process_rb_insert_block(process, new_addr, new_size, block->stack_node, 0, mt_msg->operation))
 					break;
 
-				process->n_allocations++;
 				process->total_allocations++;
 				process->bytes_used += new_size;
-
 				break;
 			}
+			else {
+				// freeing a chunk at the end of the mmap block.
+				size_t amount_freed = block->size - off;
+				process_release_mem(process, block, amount_freed);
 
-			process_release_mem(process, block, off);
+				block->size -= amount_freed;
-
+				size -= amount_freed ;
-			block->addr += off;
+				ptr += amount_freed;
-			block->size -= off;
+			}
-
-			size -= block->size;
-			ptr += block->size;
 		}
 	} while(size);
 }
@@ -1362,6 +1402,22 @@ static int is_sane(struct rb_block *block, enum mt_operation op)
 	return 1;
 }
 
+static void realloc_add(struct process *process, unsigned long pid, unsigned long addr, unsigned long size, unsigned long flags, struct rb_stack *stack_node)
+{
+	struct realloc_entry *re = malloc(sizeof(*re));
+
+	re->addr = addr;
+	re->size = size;
+	re->flags = flags;
+	re->pid = pid;
+	re->stack_node = stack_node;
+
+	if (re->stack_node)
+		stack_get(re->stack_node);
+
+	list_add_tail(&re->list, &process->realloc_list);
+}
+
 void process_free(struct process *process, struct mt_msg *mt_msg, void *payload)
 {
 	struct rb_block *block = NULL;
@@ -1395,43 +1451,29 @@ void process_free(struct process *process, struct mt_msg *mt_msg, void *payload)
 
 	debug(DEBUG_FUNCTION, "ptr=%#lx", ptr);
 
+	if (!ptr)
+		return;
+
 	block = process_rb_search(&process->block_table, ptr);
 	if (block) {
-		if (block->addr != ptr) {
-			fprintf(stderr, ">>> block invalid free %#lx pid:%d\n", ptr, process->pid);
-
-			if (options.kill)
-				abort();
-		}
-
 		if (is_mmap(block->stack_node->stack->operation)) {
-			fprintf(stderr, ">>> block missmatch pid:%d MAP<>MALLOC %#lx\n", process->pid, ptr);
+			if (unlikely(options.kill)) {
-
+				fprintf(stderr, ">>> block missmatch pid:%d MAP<>MALLOC %#lx\n", process->pid, ptr);
-			if (options.kill)
 				abort();
+			}
 		}
 
-		if (!is_sane(block, mt_msg->operation)) {
+		if (stack_size) {
-			struct rb_stack *stack = stack_add(process, process->pid, stack_data, stack_size, mt_msg->operation);
+			if (!is_sane(block, mt_msg->operation)) {
+				struct rb_stack *stack = stack_add(process, stack_data, stack_size, mt_msg->operation);
 
-			stack->n_mismatched++;
+				stack->n_mismatched++;
-			stack->tsc = process->tsc++;
+				stack->tsc = process->tsc++;
+			}
 		}
 
-		if (mt_msg->operation == MT_REALLOC_ENTER) {
+		if (mt_msg->operation == MT_REALLOC_ENTER)
-			struct realloc_entry *re = malloc(sizeof(*re));
+			realloc_add(process, pid, block->addr, block->size, block->flags, block->stack_node);
-
-			re->addr = block->addr;
-			re->size = block->size;
-			re->flags = block->flags;
-			re->operation = block->stack_node->stack->operation;
-			re->pid = pid;
-			re->stack = block->stack_node;
-
-			stack_get(re->stack);
-
-			list_add_tail(&re->list, &process->realloc_list);
-		}
 
 		process_rb_delete_block(process, block);
 	}
@@ -1441,7 +1483,17 @@ void process_free(struct process *process, struct mt_msg *mt_msg, void *payload)
 				fprintf(stderr, ">>> block %#lx not found pid:%d\n", ptr, process->pid);
 				abort();
 			}
+
+			if (stack_size) {
+				struct rb_stack *stack = stack_add(process, stack_data, stack_size, mt_msg->operation);
+
+				stack->n_badfree++;
+				stack->tsc = process->tsc++;
+			}
 		}
+
+		if (mt_msg->operation == MT_REALLOC_ENTER)
+			realloc_add(process, pid, 0, 0, 0, NULL);
 	}
 }
 
@@ -1451,6 +1503,8 @@ void process_realloc_done(struct process *process, struct mt_msg *mt_msg, void *
 	unsigned long pid;
 	struct list_head *it;
 
+	(void)mt_msg;
+
 	if (!process->tracing)
 		return;
 
@@ -1473,15 +1527,18 @@ void process_realloc_done(struct process *process, struct mt_msg *mt_msg, void *
 		struct realloc_entry *re = container_of(it, struct realloc_entry, list);
 
 		if (re->pid == pid) {
-			if (!ptr)
+			if (!ptr && re->addr)
-				process_rb_insert_block(process, re->addr, re->size, re->stack, re->flags, re->operation);
+				process_rb_insert_block(process, re->addr, re->size, re->stack_node, re->flags, re->stack_node->stack->operation);
 
 			realloc_del(re);
-
+			return;
-			break;
 		}
 	}
 
+	if (unlikely(options.kill)) {
+		fprintf(stderr, ">>> unexpected realloc done pid: %lu ptr: %#lx\n", pid, ptr);
+		abort();
+	}
 	return;
 }
 
@@ -1527,16 +1584,18 @@ void process_alloc(struct process *process, struct mt_msg *mt_msg, void *payload
 
 		process_dump_collision(process, block, ptr, size, mt_msg->operation);
 
-		if (options.kill)
+		if (unlikely(options.kill))
 			abort();
 
 		process_rb_delete_block(process, block);
 	}
 
-	struct rb_stack *stack = stack_add(process, process->pid, stack_data, stack_size, mt_msg->operation);
+	struct rb_stack *stack = stack_add(process, stack_data, stack_size, mt_msg->operation);
 
-	if (process_rb_insert_block(process, ptr, size, stack, 0, mt_msg->operation))
+	if (process_rb_insert_block(process, ptr, size, stack, 0, mt_msg->operation)) {
+		fprintf(stderr, "process_rb_insert_block failed\n");
 		return;
+	}
 
 	process->total_allocations++;
 	process->bytes_used += size;
@@ -1594,7 +1653,10 @@ void process_dump_sortby(struct process *process)
 		_process_dump(process, sort_usage, skip_zero_allocations, options.output, options.lflag);
 		break;
 	case OPT_SORT_MISMATCHED:
-		_process_dump(process, sort_mismatched, skip_non_mismatched, options.output, options.lflag);
+		_process_dump(process, sort_mismatched, skip_none, options.output, options.lflag);
+		break;
+	case OPT_SORT_BADFREE:
+		_process_dump(process, sort_badfree, skip_none, options.output, options.lflag);
 		break;
 	default:
 		_process_dump(process, sort_allocations, skip_zero_allocations, options.output, options.lflag);
@@ -1602,14 +1664,17 @@ void process_dump_sortby(struct process *process)
 	}
 }
 
-void process_exit(struct process *process)
+int process_exit(struct process *process)
 {
 	process_set_status(process, MT_PROCESS_EXIT);
 
-	if (!options.interactive)
+	if (!options.interactive) {
 		process_dump_sortby(process);
-	else
+		return 1;
-		fprintf(stderr, "+++ process %d exited +++\n", process->pid);
+	}
+
+	fprintf(stderr, "+++ process %d exited\n", process->pid);
+	return 0;
 }
 
 void process_about_exit(struct process *process)
@@ -1622,17 +1687,25 @@ void process_about_exit(struct process *process)
 	client_send_msg(process, MT_ABOUT_EXIT, NULL, 0);
 }
 
-void process_detach(struct process *process)
+int process_detach(struct process *process)
 {
+	int ret = 0;
+
 	process_set_status(process, MT_PROCESS_DETACH);
 
-	if (options.auto_scan)
+	if (options.auto_scan) {
 		process_leaks_scan(process, SCAN_ALL);
-	else
+	}
-	if (!options.interactive)
+	else {
-		process_dump_sortby(process);
+		if (!options.interactive) {
+			process_dump_sortby(process);
+			ret = 1;
+		}
+	}
 
 	client_send_msg(process, MT_DETACH, NULL, 0);
+
+	return ret;
 }
 
 void process_set_status(struct process *process, enum process_status status)
@@ -1703,7 +1776,7 @@ struct block_helper {
 	unsigned long	mask;
 	unsigned long	fmask;
 	unsigned long	fmode;
-	void * 		data;
+	void *		data;
 };
 
 static void set_block(struct rb_block *block, void *data)

client/process.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -90,15 +90,15 @@ void process_set_status(struct process *process, enum process_status status);
 void process_start_input(struct process *process);
 void process_stop_input(struct process *process);
 void process_about_exit(struct process *process);
-void process_exit(struct process *process);
+int process_exit(struct process *process);
 void process_status(struct process *process);
-void *process_scan(struct process *curr, void *leaks, uint32_t payload_len);
+int process_scan(struct process *curr, void *leaks, uint32_t payload_len);
 void process_alloc(struct process *process, struct mt_msg *msg, void *payload);
 void process_free(struct process *process, struct mt_msg *msg, void *payload);
 void process_munmap(struct process *process, struct mt_msg *msg, void *payload);
 void process_add_map(struct process *process, void *payload, uint32_t payload_len);
 void process_del_map(struct process *process, void *payload, uint32_t payload_len);
-void process_detach(struct process *process);
+int process_detach(struct process *process);
 void process_realloc_done(struct process *process, struct mt_msg *mt_msg, void *payload);
 
 unsigned long process_leaks_scan(struct process *process, int mode);
@@ -112,6 +112,7 @@ void process_dump_sort_allocations(struct process *process, const char *outfile,
 void process_dump_sort_total(struct process *process, const char *outfile, int lflag);
 void process_dump_sort_tsc(struct process *process, const char *outfile, int lflag);
 void process_dump_sort_mismatched(struct process *process, const char *outfile, int lflag);
+void process_dump_sort_badfree(struct process *process, const char *outfile, int lflag);
 void process_dump_stacks(struct process *process, const char *outfile, int lflag);
 
 void add_ignore_regex(regex_t *re);

client/readline.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -90,34 +90,35 @@ static const char *outfile;
 static int quit;
 
 static struct cmd_opt dump_opts[] = {
-	{ "allocations", 2, process_dump_sort_allocations, "sort by number of open allocations" },
+	{ "allocations", 2, process_dump_sort_allocations, "sort by number of open allocations", NULL, NULL },
-	{ "average", 2, process_dump_sort_average, "sort by average allocation of bytes (usage / allocations)" },
+	{ "average", 2, process_dump_sort_average, "sort by average allocation of bytes (usage / allocations)", NULL, NULL },
-	{ "bytes-leaked", 1, process_dump_sort_bytes_leaked, "sort by number of leaked bytes" },
+	{ "badfree", 1, process_dump_sort_badfree, "sort by number of badfree releases", NULL, NULL },
-	{ "leaks", 1, process_dump_sort_leaks, "sort by number of detected leaks" },
+	{ "bytes-leaked", 1, process_dump_sort_bytes_leaked, "sort by number of leaked bytes", NULL, NULL },
-	{ "mismatched", 1, process_dump_sort_mismatched, "sort by number of mismatched releases" },
+	{ "leaks", 1, process_dump_sort_leaks, "sort by number of detected leaks", NULL, NULL },
-	{ "stacks", 1, process_dump_stacks, "dump all stack sort by number of total allocations" },
+	{ "mismatched", 1, process_dump_sort_mismatched, "sort by number of mismatched releases", NULL, NULL },
-	{ "total", 2, process_dump_sort_total, "sort by number of total allocations" },
+	{ "stacks", 1, process_dump_stacks, "dump all stack sort by number of total allocations", NULL, NULL },
-	{ "tsc", 2, process_dump_sort_tsc, "sort by time stamp counter" },
+	{ "total", 2, process_dump_sort_total, "sort by number of total allocations", NULL, NULL },
-	{ "usage", 1, process_dump_sort_usage, "sort by number of bytes" },
+	{ "tsc", 2, process_dump_sort_tsc, "sort by time stamp counter", NULL, NULL },
-	{ NULL, 0, NULL, "\n use > to dump the output into a file" },
+	{ "usage", 1, process_dump_sort_usage, "sort by number of bytes", NULL, NULL },
+	{ NULL, 0, NULL, "\n use > to dump the output into a file", NULL, NULL },
 };
 
 static struct cmd_opt set_opts[] = {
-	{ "searchpath", 1, do_set_searchpath, "set searchpath for binaries and libraries" },
+	{ "searchpath", 1, do_set_searchpath, "set searchpath for binaries and libraries", NULL, NULL },
-	{ "depth", 1, do_set_depth, "set backtrace depth" },
+	{ "depth", 1, do_set_depth, "set backtrace depth", NULL, NULL },
 	{ },
 };
 
 static struct cmd_opt show_opts[] = {
-	{ "info", 1, do_show_info, "show client settings" },
+	{ "info", 1, do_show_info, "show client settings", NULL, NULL },
-	{ "searchpath", 1, do_show_searchpath, "show searchpath for binaries and libraries" },
+	{ "searchpath", 1, do_show_searchpath, "show searchpath for binaries and libraries", NULL, NULL },
 	{ },
 };
 
 static struct cmd_opt scan_opts[] = {
-	{ "all", 1, (void *)SCAN_ALL, "scan all memory blocks" },
+	{ "all", 1, (void *)SCAN_ALL, "scan all memory blocks", NULL, NULL },
-	{ "leak", 1, (void *)SCAN_LEAK, "scan only leaked allocations" },
+	{ "leak", 1, (void *)SCAN_LEAK, "scan only leaked allocations", NULL, NULL },
-	{ "new", 1, (void *)SCAN_NEW, "scan only allocations since last scan" },
+	{ "new", 1, (void *)SCAN_NEW, "scan only allocations since last scan", NULL, NULL },
 	{ },
 };
 
@@ -143,21 +144,24 @@ static struct cmd_opt cmds[] = {
 		1,
 		do_proclist,
 		"list processes",
-		""
+		"",
+		NULL
 	},
 	{
 		quit_str,
 		1,
 		do_quit,
 		"exit the program",
-		""
+		"",
+		NULL
 	},
 	{
 		reset_str,
 		1,
 		do_reset,
 		"reset all current memory allocation",
-		"[<pid>]"
+		"[<pid>]",
+		NULL
 	},
 	{
 		scan_str,
@@ -170,7 +174,7 @@ static struct cmd_opt cmds[] = {
 	{
 		set_str,
 		2,
-		do_set,	
+		do_set,
 		"change settings",
 		"<option> [arg]",
 		set_opts
@@ -178,7 +182,7 @@ static struct cmd_opt cmds[] = {
 	{
 		show_str,
 		2,
-		do_show,	
+		do_show,
 		"show settings",
 		"<option> [arg]",
 		show_opts
@@ -188,21 +192,24 @@ static struct cmd_opt cmds[] = {
 		4,
 		do_start,
 		"start allocation tracing",
-		""
+		"",
+		NULL
 	},
 	{
 		status_str,
 		4,
 		do_status,
 		"show allocation status",
-		"[<pid>]"
+		"[<pid>]",
+		NULL
 	},
 	{
 		stop_str,
 		3,
 		do_stop,
 		"stop allocation tracing",
-		""
+		"",
+		NULL
 	},
 	{ },
 };
@@ -346,9 +353,8 @@ static void readline_handler(char *line)
 	char *linedup;
 	char *s;
 
-	linedup = strdup(line);
+	linedup = alloca(strlen(line) + 1);
-	if (!linedup)
+	strcpy(linedup, line);
-		goto finish;
 
 	argv = malloc(argv_size * sizeof(*argv));
 	if (!argv)
@@ -356,7 +362,7 @@ static void readline_handler(char *line)
 
 	s = linedup;
 	i = 0;
-	
+
 	for(;;) {
 		s = skip_spaces(s);
 		if (!*s)
@@ -400,7 +406,7 @@ static void readline_handler(char *line)
 		s += n + 1;
 	}
 	if (!i)
-		return;
+		goto finish;
 
 	argc = i;
 	argv[i++] = NULL;
@@ -438,7 +444,6 @@ static void readline_handler(char *line)
 	printf("unknown command '%s'\n", argv[0]);
 finish:
 	free(argv);
-	free(linedup);
 
 	if (quit)
 		rl_callback_handler_remove();
@@ -512,6 +517,8 @@ static int do_set_depth(struct cmd_opt *cmd, struct cmd_opt *opt, int argc, cons
 
 static int do_show_info(struct cmd_opt *cmd, struct cmd_opt *opt, int argc, const char *argv[])
 {
+	(void)argv;
+
 	if (argc > 2) {
 		fprintf(stderr, "%s: too many option argument for '%s'\n", cmd->name, opt->name);
 		return -1;
@@ -527,6 +534,8 @@ static int do_show_searchpath(struct cmd_opt *cmd, struct cmd_opt *opt, int argc
 {
 	struct opt_b_t *p = options.opt_b;
 
+	(void)argv;
+
 	if (argc > 3) {
 		fprintf(stderr, "%s: too many option argument for '%s'\n", cmd->name, opt->name);
 		return -1;
@@ -616,7 +625,7 @@ static int do_help(struct cmd_opt *cmd, int argc, const char *argv[])
 {
 	int i;
 	unsigned int len;
-	
+
 	if (argc <= 1) {
 		for(i = 0; i != ARRAY_SIZE(cmds) - 1; ++i)
 			printf(" %s - %s\n", cmds[i].name, cmds[i].info);
@@ -660,6 +669,9 @@ static int show_process(struct process *process)
 
 static int do_proclist(struct cmd_opt *cmd, int argc, const char *argv[])
 {
+	(void)cmd;
+	(void)argv;
+
 	if (argc > 1) {
 		fprintf(stderr, "%s: expect no arguments\n", proclist_str);
 		return -1;
@@ -673,6 +685,10 @@ static int do_proclist(struct cmd_opt *cmd, int argc, const char *argv[])
 
 static int do_quit(struct cmd_opt *cmd, int argc, const char *argv[])
 {
+	(void)cmd;
+	(void)argc;
+	(void)argv;
+
 	quit = 1;
 
 	return 0;
@@ -682,6 +698,9 @@ static int do_reset(struct cmd_opt *cmd, int argc, const char *argv[])
 {
 	struct process *process;
 
+	(void)cmd;
+	(void)argc;
+
 	process = get_process(argv[1]);
 	if (!process)
 		return -1;
@@ -701,6 +720,8 @@ static int do_scan(struct cmd_opt *cmd, int argc, const char *argv[])
 	unsigned int i;
 	int mode;
 
+	(void)argc;
+
 	if (!client_connected())
 		return -1;
 
@@ -797,6 +818,9 @@ static int do_start(struct cmd_opt *cmd, int argc, const char *argv[])
 {
 	struct process *process;
 
+	(void)cmd;
+	(void)argc;
+
 	if (!client_connected())
 		return -1;
 
@@ -818,6 +842,9 @@ static int do_status(struct cmd_opt *cmd, int argc, const char *argv[])
 {
 	struct process *process;
 
+	(void)cmd;
+	(void)argc;
+
 	process = get_process(argv[1]);
 	if (!process)
 		return -1;
@@ -831,6 +858,9 @@ static int do_stop(struct cmd_opt *cmd, int argc, const char *argv[])
 {
 	struct process *process;
 
+	(void)cmd;
+	(void)argc;
+
 	if (!client_connected())
 		return -1;
 
@@ -887,5 +917,10 @@ void readline_exit(void)
 {
 	if (!quit)
 		rl_callback_handler_remove();
+#if (RL_VERSION_MAJOR<=5 || (RL_VERSION_MAJOR==6 && RL_VERSION_MINOR<=3))
+	clear_history();
+#else
+	rl_clear_history();
+#endif
 }
 

client/readline.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

common.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

common.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

config.h.in

@@ -1,214 +1,13 @@
-/* config.h.in.  Generated from configure.ac by autoheader.  */
+#define PACKAGE_VERSION "@MT_VERSION_STRING@"
 
-/* debugging */
+#ifndef HAVE_PROCESS_VM_READV
-#undef DEBUG
+#cmakedefine HAVE_PROCESS_VM_READV
-
-/* disable client */
-#undef DISABLE_CLIENT
-
-/* elf_hash() takes char* (as opposed to unsigned char *) */
-#undef ELF_HASH_TAKES_CHARP
-
-/* Define to 1 if you have the `alarm' function. */
-#undef HAVE_ALARM
-
-/* Define to 1 if you have the `atexit' function. */
-#undef HAVE_ATEXIT
-
-/* Define to 1 if you have the <bfd.h> header file. */
-#undef HAVE_BFD_H
-
-/* Define to 1 if you have the `clock_gettime' function. */
-#undef HAVE_CLOCK_GETTIME
-
-/* Define to 1 if you have the <dlfcn.h> header file. */
-#undef HAVE_DLFCN_H
-
-/* we have read mmap support */
-#undef HAVE_ELF_C_READ_MMAP
-
-/* Define to 1 if you have the <elf.h> header file. */
-#undef HAVE_ELF_H
-
-/* Define to 1 if you have the <fcntl.h> header file. */
-#undef HAVE_FCNTL_H
-
-/* Define to 1 if you have the `fork' function. */
-#undef HAVE_FORK
-
-/* Define to 1 if you have the <gelf.h> header file. */
-#undef HAVE_GELF_H
-
-/* Define to 1 if you have the `getcwd' function. */
-#undef HAVE_GETCWD
-
-/* Define to 1 if you have the `gettimeofday' function. */
-#undef HAVE_GETTIMEOFDAY
-
-/* Define to 1 if you have the <inttypes.h> header file. */
-#undef HAVE_INTTYPES_H
-
-/* Define to 1 if you have the `bfd' library (-lbfd). */
-#undef HAVE_LIBBFD
-
-/* Define to 1 if you have the `dl' library (-ldl). */
-#undef HAVE_LIBDL
-
-/* Define to 1 if you have the `elf' library (-lelf). */
-#undef HAVE_LIBELF
-
-/* Define to 1 if you have the `pthread' library (-lpthread). */
-#undef HAVE_LIBPTHREAD
-
-/* Define to 1 if you have the `readline' library (-lreadline). */
-#undef HAVE_LIBREADLINE
-
-/* Define to 1 if you have the `rt' library (-lrt). */
-#undef HAVE_LIBRT
-
-/* Define to 1 if you have the `selinux' library (-lselinux). */
-#undef HAVE_LIBSELINUX
-
-/* Define to 1 if you have the `termcap' library (-ltermcap). */
-#undef HAVE_LIBTERMCAP
-
-/* Define to 1 if you have the <limits.h> header file. */
-#undef HAVE_LIMITS_H
-
-/* Define to 1 if you have the <memory.h> header file. */
-#undef HAVE_MEMORY_H
-
-/* Define to 1 if you have the `memset' function. */
-#undef HAVE_MEMSET
-
-/* Define to 1 if you have the `mkdir' function. */
-#undef HAVE_MKDIR
-
-/* Define to 1 if you have the `process_vm_readv' function. */
-#undef HAVE_PROCESS_VM_READV
-
-/* Define to 1 if you have the <pthread.h> header file. */
-#undef HAVE_PTHREAD_H
-
-/* Define to 1 if you have the <readline/readline.h> header file. */
-#undef HAVE_READLINE_READLINE_H
-
-/* Define to 1 if you have the `rmdir' function. */
-#undef HAVE_RMDIR
-
-/* Define to 1 if you have the <selinux/selinux.h> header file. */
-#undef HAVE_SELINUX_SELINUX_H
-
-/* Define to 1 if you have the <stddef.h> header file. */
-#undef HAVE_STDDEF_H
-
-/* Define to 1 if you have the <stdint.h> header file. */
-#undef HAVE_STDINT_H
-
-/* Define to 1 if you have the <stdlib.h> header file. */
-#undef HAVE_STDLIB_H
-
-/* Define to 1 if you have the `strchr' function. */
-#undef HAVE_STRCHR
-
-/* Define to 1 if you have the `strdup' function. */
-#undef HAVE_STRDUP
-
-/* Define to 1 if you have the `strerror' function. */
-#undef HAVE_STRERROR
-
-/* Define to 1 if you have the <strings.h> header file. */
-#undef HAVE_STRINGS_H
-
-/* Define to 1 if you have the <string.h> header file. */
-#undef HAVE_STRING_H
-
-/* Define to 1 if you have the `strtol' function. */
-#undef HAVE_STRTOL
-
-/* Define to 1 if you have the `strtoul' function. */
-#undef HAVE_STRTOUL
-
-/* Define to 1 if you have the <sys/ioctl.h> header file. */
-#undef HAVE_SYS_IOCTL_H
-
-/* Define to 1 if you have the <sys/param.h> header file. */
-#undef HAVE_SYS_PARAM_H
-
-/* Define to 1 if you have the <sys/stat.h> header file. */
-#undef HAVE_SYS_STAT_H
-
-/* Define to 1 if you have the <sys/time.h> header file. */
-#undef HAVE_SYS_TIME_H
-
-/* Define to 1 if you have the <sys/types.h> header file. */
-#undef HAVE_SYS_TYPES_H
-
-/* Define to 1 if you have the <unistd.h> header file. */
-#undef HAVE_UNISTD_H
-
-/* Define to 1 if you have the `vfork' function. */
-#undef HAVE_VFORK
-
-/* Define to 1 if you have the <vfork.h> header file. */
-#undef HAVE_VFORK_H
-
-/* Define to 1 if `fork' works. */
-#undef HAVE_WORKING_FORK
-
-/* Define to 1 if `vfork' works. */
-#undef HAVE_WORKING_VFORK
-
-/* Define to the sub-directory where libtool stores uninstalled libraries. */
-#undef LT_OBJDIR
-
-/* Name of package */
-#undef PACKAGE
-
-/* Define to the address where bug reports for this package should be sent. */
-#undef PACKAGE_BUGREPORT
-
-/* Define to the full name of this package. */
-#undef PACKAGE_NAME
-
-/* Define to the full name and version of this package. */
-#undef PACKAGE_STRING
-
-/* Define to the one symbol short name of this package. */
-#undef PACKAGE_TARNAME
-
-/* Define to the home page for this package. */
-#undef PACKAGE_URL
-
-/* Define to the version of this package. */
-#undef PACKAGE_VERSION
-
-/* The size of `long', as computed by sizeof. */
-#undef SIZEOF_LONG
-
-/* Define to 1 if you have the ANSI C header files. */
-#undef STDC_HEADERS
-
-/* Version number of package */
-#undef VERSION
-
-/* Define to `int' if <sys/types.h> doesn't define. */
-#undef gid_t
-
-/* Define to `__inline__' or `__inline' if that's what the C compiler
-   calls it, or to nothing if 'inline' is not supported under any name.  */
-#ifndef __cplusplus
-#undef inline
 #endif
 
-/* Define to `int' if <sys/types.h> does not define. */
+#ifndef HAVE_LIBSELINUX
-#undef pid_t
+#cmakedefine HAVE_LIBSELINUX
+#endif
 
-/* Define to `unsigned int' if <sys/types.h> does not define. */
+#ifndef DISABLE_CLIENT
-#undef size_t
+#cmakedefine DISABLE_CLIENT
-
+#endif
-/* Define to `int' if <sys/types.h> doesn't define. */
-#undef uid_t
-
-/* Define as `fork' if `vfork' does not work. */
-#undef vfork

configure.ac

@@ -1,287 +0,0 @@
-# -*- Autoconf -*-
-# This file is part of mtrace-ng.
-# Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
-# Copyright (C) 2010,2013 Petr Machata, Red Hat Inc.
-# Copyright (C) 2010,2011 Joe Damato
-# Copyright (C) 2010 Marc Kleine-Budde
-# Copyright (C) 2010 Zachary T Welch
-#
-# 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 2 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, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-# 02110-1301 USA
-
-# Process this file with autoconf to produce a configure script.
-AC_PREREQ(2.65)
-
-AC_INIT([mtrace-ng],[0.5],[stefani@seibold.net])
-AC_CONFIG_HEADERS([config.h])
-AC_CONFIG_SRCDIR(main.c)
-AC_CONFIG_MACRO_DIR([config/m4])
-AC_CONFIG_AUX_DIR([config/autoconf])
-AC_CANONICAL_BUILD
-AC_CANONICAL_HOST
-
-case "${host_os}" in
-    linux-gnu*) HOST_OS="linux-gnu" ;;
-    linux-uclibc*) HOST_OS="linux-gnu" ;;
-    *)		AC_MSG_ERROR([unkown host-os ${host_os}]) ;;
-esac
-AC_SUBST(HOST_OS)
-
-case "${host_cpu}" in
-    arm*|sa110)		HOST_CPU="arm" ;;
-    cris*)		HOST_CPU="cris" ;;
-    mips*)		HOST_CPU="mips" ;;
-    powerpc|powerpc64)	HOST_CPU="ppc" ;;
-    sun4u|sparc64)	HOST_CPU="sparc" ;;
-    s390x)		HOST_CPU="s390" ;;
-    i?86|x86_64)	HOST_CPU="x86" ;;
-    *)			HOST_CPU="${host_cpu}" ;;
-esac
-AC_SUBST(HOST_CPU)
-
-# Checks for programs.
-AC_PROG_CC
-LT_INIT
-# libtool-2:  LT_INIT()
-AM_INIT_AUTOMAKE([foreign no-exeext dist-bzip2])
-AM_MAINTAINER_MODE
-
-AC_MSG_CHECKING([whether to disable client support])
-AC_ARG_ENABLE(client,
-    AC_MSG_WARN( hallo)
-    AS_HELP_STRING([--disable-client], [disable client @<:@default=no@:>@]),
-	[case "$enableval" in
-	n | no) CONFIG_DISABLE_CLIENT=yes ;;
-        *) CONFIG_DISABLE_CLIENT=no ;;
-    esac],
-    [CONFIG_DISABLE_CLIENT=no])
-AC_MSG_RESULT([${CONFIG_DISABLE_CLIENT}])
-if test "${CONFIG_DISABLE_CLIENT}" = "yes"; then
-	AC_DEFINE(DISABLE_CLIENT, 1, [disable client])
-fi
-AM_CONDITIONAL(DISABLE_CLIENT, [test "${CONFIG_DISABLE_CLIENT}" = "yes"])
-
-
-AC_ARG_WITH([libelf],
-  AS_HELP_STRING([--with-libelf], [Prefix of libelf headers/library]),
-  [case "${withval}" in
-  (no)
-    AC_MSG_ERROR([*** libelf is a required dependency])
-    ;;
-  (yes)
-    AC_MSG_ERROR([*** --with-libelf requires you to specify a path])
-    ;;
-  (*)
-    AM_CPPFLAGS="${AM_CPPFLAGS} -I${withval}/include"
-    AM_LDFLAGS="${AM_LDFLAGS} -L${withval}/lib"
-    libelf_LD_LIBRARY_PATH="${withval}/lib"
-    ;;
-esac],[])
-
-# Checks for libraries.
-
-saved_CPPFLAGS="${CPPFLAGS}"
-saved_LDFLAGS="${LDFLAGS}"
-CPPFLAGS="${CPPFLAGS} ${AM_CPPFLAGS}"
-LDFLAGS="${LDFLAGS} ${AM_LDFLAGS}"
-
-# libelf
-AC_CHECK_HEADERS([elf.h gelf.h],,
-	[AC_MSG_ERROR([*** elf.h or gelf.h not found on your system])]
-)
-AC_CHECK_LIB([elf], [elf_begin],,
-	[AC_MSG_ERROR([*** libelf not found on your system])]
-)
-CPPFLAGS="${saved_CPPFLAGS}"
-LDFLAGS="${saved_LDFLAGS}"
-
-# libreadline
-if test "${CONFIG_DISABLE_CLIENT}" != "yes"; then
-	AC_CHECK_HEADERS([readline/readline.h],,
-		[AC_MSG_ERROR([*** readline.h not found on your system])]
-	)
-	AC_CHECK_LIB([readline], [rl_callback_read_char],,
-		[AC_MSG_ERROR([*** libreadline not found on your system])]
-	)
-fi
-
-# libbfd
-if test "${CONFIG_DISABLE_CLIENT}" != "yes"; then
-	AC_CHECK_HEADERS([bfd.h],,
-		[AC_MSG_ERROR([*** bfd.h not found on your system])]
-	)
-	AC_CHECK_LIB([bfd], [bfd_openr],,
-		[AC_MSG_ERROR([*** libbfd not found on your system])]
-	)
-fi
-
-# libpthread
-AC_CHECK_HEADERS([pthread.h],,
-	[AC_MSG_ERROR([*** pthread.h not found on your system])]
-)
-AC_CHECK_LIB([pthread], [pthread_create],,
-	[AC_MSG_ERROR([*** libpthread not found on your system])]
-)
-
-# libdl
-AC_CHECK_HEADERS([dlfcn.h],,
-	[AC_MSG_ERROR([*** dlfcn.h not found on your system])]
-)
-AC_CHECK_LIB([dl], [dladdr],,
-	[AC_MSG_ERROR([*** libdl not found on your system])]
-)
-
-# libtermcap
-#AC_CHECK_HEADERS([termcap.h],,
-#	[AC_MSG_ERROR([*** termcap.h not found on your system])]
-#)
-AC_CHECK_LIB([termcap], [tgetflag],,
-)
-
-
-dnl Check security_get_boolean_active availability.
-AC_CHECK_HEADERS(selinux/selinux.h)
-AC_CHECK_LIB(selinux, security_get_boolean_active)
-
-saved_CPPFLAGS="${CPPFLAGS}"
-saved_LDFLAGS="${LDFLAGS}"
-CPPFLAGS="${CPPFLAGS} ${AM_CPPFLAGS}"
-LDFLAGS="${LDFLAGS} ${AM_LDFLAGS}"
-
-# HAVE_ELF_C_READ_MMAP
-AC_MSG_CHECKING([whether elf_begin accepts ELF_C_READ_MMAP])
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <gelf.h>]], [[
-int main () {
-	Elf *elf = elf_begin(4, ELF_C_READ_MMAP, 0);
-	return 0;
-}
-	]])],[
-	AC_DEFINE([HAVE_ELF_C_READ_MMAP], [1], [we have read mmap support])
-	AC_MSG_RESULT([yes])],[
-	AC_MSG_RESULT([no])])
-CPPFLAGS="${saved_CPPFLAGS}"
-LDFLAGS="${saved_LDFLAGS}"
-
-saved_CFLAGS="${CFLAGS}"
-CFLAGS="${CFLAGS} -Wall -Werror"
-AC_MSG_CHECKING([whether elf_hash takes a char* argument])
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <libelf.h>]], [[
-	(void) elf_hash("name");
-	]])],
-	[AC_DEFINE([ELF_HASH_TAKES_CHARP], [1],
-		[elf_hash() takes char* (as opposed to unsigned char *)])
-	 AC_MSG_RESULT([yes])],
-	[AC_MSG_RESULT([no])])
-CFLAGS="${saved_CFLAGS}"
-CPPFLAGS="${saved_CPPFLAGS}"
-LDFLAGS="${saved_LDFLAGS}"
-
-AM_CPPFLAGS=" \
-	${AM_CPPFLAGS} \
-	-I\$(top_srcdir)/client \
-	-I\$(top_srcdir)/sysdeps/${HOST_OS}/${HOST_CPU} \
-	-I\$(top_srcdir)/sysdeps/${HOST_OS} \
-	-I\$(top_srcdir)/sysdeps \
-	-I\$(top_srcdir) \
-"
-
-# Checks for header files.
-AC_CHECK_HEADERS([ \
-	fcntl.h \
-	limits.h \
-	stddef.h \
-	stdint.h \
-	stdlib.h \
-	string.h \
-	sys/ioctl.h \
-	sys/param.h \
-	sys/time.h \
-	unistd.h \
-])
-
-# Checks for typedefs, structures, and compiler characteristics.
-AC_TYPE_UID_T
-AC_C_INLINE
-AC_TYPE_PID_T
-AC_TYPE_SIZE_T
-AC_CHECK_SIZEOF([long])
-
-
-# Checks for library functions.
-AC_FUNC_ERROR_AT_LINE
-AC_FUNC_FORK
-AC_CHECK_FUNCS([ \
-	alarm \
-	atexit \
-	getcwd \
-	gettimeofday \
-	clock_gettime \
-	memset \
-	mkdir \
-	rmdir \
-	strchr \
-	strdup \
-	strerror \
-	strtol \
-	strtoul \
-	process_vm_readv \
-])
-
-AC_CHECK_LIB([rt], [clock_gettime],,
-	[AC_MSG_ERROR([*** librt not found on your system])]
-)
-
-#
-# Debugging
-#
-AC_MSG_CHECKING([whether to enable debugging])
-AC_ARG_ENABLE(debug,
-    AS_HELP_STRING([--enable-debug], [enable debugging @<:@default=no@:>@]),
-	[case "$enableval" in
-	y | yes) CONFIG_DEBUG=yes ;;
-        *) CONFIG_DEBUG=no ;;
-    esac],
-    [CONFIG_DEBUG=no])
-AC_MSG_RESULT([${CONFIG_DEBUG}])
-if test "${CONFIG_DEBUG}" = "yes"; then
-    AC_DEFINE(DEBUG, 1, [debugging])
-else
-    AM_CFLAGS="${AM_CFLAGS} -DNDEBUG"
-fi
-
-# Ignore the compiler's warnings at your own risk.
-AM_CFLAGS="${AM_CFLAGS} -Wall -Wsign-compare -Wfloat-equal -Wformat-security -rdynamic"
-AC_ARG_ENABLE([werror],
-    AS_HELP_STRING([--disable-werror], [disable use of -Werror]),
-    [enable_werror=$enableval], [enable_werror=yes])
-if test x$enable_werror = xyes; then
-    AM_CFLAGS="${AM_CFLAGS} -Werror"
-fi
-
-AC_SUBST(AM_CPPFLAGS)
-AC_SUBST(AM_CFLAGS)
-AC_SUBST(AM_LDFLAGS)
-AC_SUBST(libelf_LD_LIBRARY_PATH)
-
-AC_CONFIG_FILES([
-	Makefile
-	client/Makefile
-	sysdeps/Makefile
-	sysdeps/linux-gnu/Makefile
-	sysdeps/linux-gnu/x86/Makefile
-	sysdeps/linux-gnu/ppc/Makefile
-	sysdeps/linux-gnu/arm/Makefile
-])
-AC_OUTPUT

debian/control

@@ -2,7 +2,7 @@ Source: mtrace-ng
 Section: utils
 Priority: optional
 Maintainer: Package Maintainers <Package-Maintainers@debian.com>
-Build-Depends: debhelper (>= 8.0.0), autotools-dev, binutils-dev,  libreadline6-dev, libselinux1-dev, libtinfo-dev, libelfg0-dev
+Build-Depends: debhelper (>= 8.0.0), autotools-dev, binutils-dev,  libreadline6-dev, libselinux1-dev, libtinfo-dev, libelf-dev, zlib1g-dev, libncurses5-dev, libiberty-dev
 Standards-Version: 3.9.4
 Vcs-Git: https://github.com/sstefani/mtrace.git
 

debug.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -47,6 +47,8 @@ void _debug(int level, const char *file, const char *function, int line, const c
 	va_end(args);
 
 	fprintf(stderr, "DEBUG: %s():%s@%d - %s\n", function, file, line, buf);
+
+	free(buf);
 }
 
 #endif

debug.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -29,11 +28,11 @@
 /* debug levels:
  */
 enum {
-	DEBUG_EVENT_HANDLER = 01,
+	DEBUG_TRACE = 1,
-	DEBUG_DWARF = 02,
+	DEBUG_DWARF = 2,
-	DEBUG_EVENT = 010,
+	DEBUG_EVENT = 4,
-	DEBUG_PROCESS = 020,
+	DEBUG_PROCESS = 8,
-	DEBUG_FUNCTION = 040
+	DEBUG_FUNCTION = 16,
 };
 
 #ifdef DEBUG
@@ -41,6 +40,11 @@ void _debug(int level, const char *file, const char *function, int line, const c
 #else
 static inline void _debug(int level, const char *file, const char *function, int line, const char *fmt, ...)
 {
+	(void)level;
+	(void)file;
+	(void)function;
+	(void)line;
+	(void)fmt;
 }
 #endif
 

dict.c

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -25,6 +24,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <assert.h>
+#include <malloc.h>
 
 #include "common.h"
 #include "dict.h"

dict.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

dwarf.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *  This file is based on the libunwind source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
@@ -36,6 +36,7 @@
 #include <inttypes.h>
 #include <errno.h>
 #include <unistd.h>
+#include <malloc.h>
 
 #include "backend.h"
 #include "common.h"
@@ -462,7 +463,7 @@ static int dwarf_read_encoded_pointer(struct dwarf_addr_space *as, int local,
 {
 	struct dwarf_addr_space *indirect_as = as;
 	arch_addr_t val, initial_addr = *addr;
-	arch_addr_t gp = as->cursor.libref->gp;
+	arch_addr_t gp = as->cursor.libref->pltgot;
 	int is_64bit = as->is_64bit;
 	void *tmp_ptr;
 	int ret;
@@ -476,16 +477,6 @@ static int dwarf_read_encoded_pointer(struct dwarf_addr_space *as, int local,
 		arch_addr_t addr;
 	} tmp;
 
-#ifdef DEBUG
-	struct dwarf_cursor *c = &as->cursor;
-	struct libref *libref = c->libref;
-
-	if (*addr < ARCH_ADDR_T(libref->image_addr))
-		fatal("invalid access mem: addr %#lx < %p", *addr, libref->image_addr);
-	if (*addr >= ARCH_ADDR_T(libref->image_addr + libref->load_size))
-		fatal("invalid access mem: addr %#lx >= %p", *addr, libref->image_addr + libref->load_size);
-#endif
-
 	memset(&tmp, 0, sizeof(tmp));
 
 	if (valp)
@@ -494,7 +485,7 @@ static int dwarf_read_encoded_pointer(struct dwarf_addr_space *as, int local,
 		valp = &val;
 		tmp_ptr = NULL;
 	}
-	
+
 	if (local)
 		as = NULL;
 
@@ -620,6 +611,15 @@ static int dwarf_read_encoded_pointer(struct dwarf_addr_space *as, int local,
 
 static inline int dwarf_read_encoded_pointer_local(struct dwarf_addr_space *as, arch_addr_t *addr, unsigned char encoding, arch_addr_t *valp, arch_addr_t start_ip)
 {
+#ifdef DEBUG
+	struct dwarf_cursor *c = &as->cursor;
+	struct libref *libref = c->libref;
+
+	if (*addr < ARCH_ADDR_T(libref->mmap_addr))
+		fatal("invalid access mem: addr %#lx < %p", *addr, libref->mmap_addr);
+	if (*addr >= ARCH_ADDR_T(libref->mmap_addr + libref->mmap_size))
+		fatal("invalid access mem: addr %#lx >= %p", *addr, libref->mmap_addr + libref->mmap_size);
+#endif
 	return dwarf_read_encoded_pointer(as, 1, addr, encoding, valp, start_ip);
 }
 
@@ -686,7 +686,7 @@ static int parse_cie(struct dwarf_addr_space *as, arch_addr_t addr, struct dwarf
 		return ret;
 
 	if (version != DWARF_CIE_VERSION && version != DWARF_CIE_VERSION_GCC) {
-		debug(DEBUG_DWARF, "Got CIE version %u, expected version " STR(DWARF_CIE_VERSION) "or" STR(DWARF_CIE_VERSION_GCC), version);
+		debug(DEBUG_DWARF, "Got CIE version %u, expected version " STR(DWARF_CIE_VERSION) " or " STR(DWARF_CIE_VERSION_GCC), version);
 		return -DWARF_EBADVERSION;
 	}
 
@@ -870,20 +870,16 @@ static int dwarf_extract_cfi_from_fde(struct dwarf_addr_space *as, void *addrp)
 	return 0;
 }
 
-static inline int lib_addr_match(struct libref *libref, arch_addr_t ip)
-{
-	return ip >= libref->load_addr && ip < libref->load_addr + libref->load_size;
-}
-
 int dwarf_locate_map(struct dwarf_addr_space *as, arch_addr_t ip)
 {
 	struct dwarf_cursor *c = &as->cursor;
+	struct libref *libref = c->libref;
 
 	if (c->use_prev_instr)
 		ip -= 1;
 
 	if (likely(c->libref)) {
-		if (lib_addr_match(c->libref, ip))
+		if (ip >= libref->txt_vaddr && ip < libref->txt_vaddr + libref->txt_size)
 			return 0;
 	}
 
@@ -894,16 +890,16 @@ int dwarf_locate_map(struct dwarf_addr_space *as, arch_addr_t ip)
 	return 0;
 }
 
-static const struct table_entry *lookup(const struct table_entry *table, size_t table_len, int32_t rel_ip)
+static const struct table_entry *lookup(const struct table_entry *table, size_t fde_count, int32_t rel_ip)
 {
 	const struct table_entry *e, *f;
 	unsigned long lo, hi;
 
-	if (!table_len)
+	if (!fde_count)
 		return NULL;
 
 	lo = 0;
-	hi = table_len;
+	hi = fde_count;
 	f = NULL;
 	do {
 		unsigned long mid = (lo + hi) / 2;
@@ -921,7 +917,7 @@ static const struct table_entry *lookup(const struct table_entry *table, size_t
 	return f;
 }
 
-static int dwarf_search_unwind_table(struct dwarf_addr_space *as, arch_addr_t ip, void *table_data, unsigned long table_len)
+static int dwarf_search_unwind_table(struct dwarf_addr_space *as, arch_addr_t ip, void *fde_tab, unsigned long fde_count)
 {
 	const struct table_entry *e;
 	void *fde_addr;
@@ -929,20 +925,19 @@ static int dwarf_search_unwind_table(struct dwarf_addr_space *as, arch_addr_t ip
 	struct dwarf_cie_info *dci = &as->cursor.dci;
 	struct libref *libref = as->cursor.libref;
 
-	e = lookup(table_data, table_len, ip - libref->load_addr - libref->seg_offset);
+	e = lookup(fde_tab, fde_count, ip - libref->eh_hdr_vaddr);
 	if (unlikely(!e)) {
 		/* IP is inside this table's range, but there is no explicit unwind info. */
 		debug(DEBUG_DWARF, "no unwind info found for IP %#lx", ip);
 		return -DWARF_ENOINFO;
 	}
 
-	fde_addr = libref->image_addr - libref->load_offset + e->fde_offset + libref->seg_offset;
+	fde_addr = libref->mmap_addr + e->fde_offset + libref->eh_hdr_offset;
 
 	if (unlikely((ret = dwarf_extract_cfi_from_fde(as, fde_addr)) < 0))
 		return ret;
 
-	dci->start_ip -= ARCH_ADDR_T(libref->image_addr) - libref->load_addr;
+	dci->start_ip = dci->start_ip - (arch_addr_t)libref->mmap_addr + libref->txt_vaddr;
-
 	if (!as->is_64bit)
 		dci->start_ip &= 0xffffffff;
 
@@ -973,18 +968,18 @@ static int dwarf_access_reg(struct dwarf_addr_space *as, unsigned int reg, arch_
 
 int dwarf_get(struct dwarf_addr_space *as, struct dwarf_loc loc, arch_addr_t *valp)
 {
-	arch_addr_t val = DWARF_GET_LOC(loc);
+	arch_addr_t addr = DWARF_GET_LOC(loc);
 
 	if (DWARF_IS_REG_LOC(loc))
-		return dwarf_access_reg(as, val, valp);
+		return dwarf_access_reg(as, addr, valp);
 
 	if (!as->is_64bit)
-		val &= 0xffffffff;
+		addr &= 0xffffffff;
 
 	if (DWARF_IS_MEM_LOC(loc))
-		return dwarf_readw(as, &val, valp, as->is_64bit);
+		return dwarf_readw(as, &addr, valp, as->is_64bit);
 
-	*valp = val;
+	*valp = addr;
 	return 0;
 }
 
@@ -1053,10 +1048,9 @@ static int run_cfi_program(struct dwarf_addr_space *as, struct dwarf_reg_state *
 	struct dwarf_cursor *c = &as->cursor;
 	struct dwarf_cie_info *dci = &c->dci;
 	unsigned int num_regs = as->num_regs;
-	struct dwarf_reg_stack {
+	unsigned int reg_stack_ptr = 0;
-		struct dwarf_reg_stack *next;	/* for reg state stack */
+	unsigned int reg_stack_entry_len = regs_size(as);
-		struct dwarf_reg_state store;
+	unsigned char reg_stack[16 * reg_stack_entry_len];
-	} *rs_stack = NULL, *rs_tmp;
 
 	curr_ip = dci->start_ip;
 
@@ -1165,21 +1159,22 @@ static int run_cfi_program(struct dwarf_addr_space *as, struct dwarf_reg_state *
 			set_reg(rs_current, regnum, DWARF_WHERE_REG, n);
 			break;
 		case DW_CFA_remember_state:
-			rs_tmp = malloc(regs_size(as));
+			if (unlikely(sizeof(reg_stack) - reg_stack_ptr < reg_stack_entry_len)) {
-			memcpy(&rs_tmp->store, rs_current, regs_size(as));
+				debug(DEBUG_DWARF, "register-state stack overflow");
-			rs_tmp->next = rs_stack;
+				ret = -DWARF_EINVAL;
-			rs_stack = rs_tmp;
+				goto fail;
+			}
+			memcpy(reg_stack + reg_stack_ptr, rs_current, reg_stack_entry_len);
+			reg_stack_ptr += reg_stack_entry_len;
 			break;
 		case DW_CFA_restore_state:
-			if (unlikely(!rs_stack)) {
+			if (unlikely(!reg_stack_ptr)) {
 				debug(DEBUG_DWARF, "register-state stack underflow");
 				ret = -DWARF_EINVAL;
 				goto fail;
 			}
-			rs_tmp = rs_stack;
+			reg_stack_ptr -= reg_stack_entry_len;
-			memcpy(rs_current, &rs_tmp->store, regs_size(as));
+			memcpy(rs_current, reg_stack + reg_stack_ptr, reg_stack_entry_len);
-			rs_stack = rs_tmp->next;
-			free(rs_tmp);
 			break;
 		case DW_CFA_def_cfa:
 			if ((unlikely((ret = read_regnum(num_regs, addr, &regnum)) < 0)
@@ -1268,12 +1263,6 @@ static int run_cfi_program(struct dwarf_addr_space *as, struct dwarf_reg_state *
 	ret = 0;
 
 fail:
-	/* Free the register-state stack, if not empty already.  */
-	while (rs_stack) {
-		rs_tmp = rs_stack;
-		rs_stack = rs_stack->next;
-		free(rs_tmp);
-	}
 	return ret;
 }
 
@@ -1807,7 +1796,7 @@ static int fetch_proc_info(struct dwarf_addr_space *as, arch_addr_t ip)
 	struct libref *libref = c->libref;
 	int ret;
 
-	ret = dwarf_search_unwind_table(as, ip, libref->table_data, libref->table_len);
+	ret = dwarf_search_unwind_table(as, ip, libref->fde_tab, libref->fde_count);
 	if (ret < 0)
 		return ret;
 
@@ -1941,8 +1930,6 @@ fail:
 	c->ip = ip;
 
 	if (ret == -DWARF_ENOINFO) {
-		debug(DEBUG_DWARF, "try arch specific step");
-
 		ret = dwarf_arch_step(as);
 		if (!ret) {
 			if (dwarf_locate_map(as, c->ip) < 0)
@@ -1987,7 +1974,8 @@ fail:
 				break;
 		}
 #endif
-		debug(DEBUG_DWARF, "error %d", ret);
+		if (ret != -DWARF_ENOINFO && ret != -DWARF_EBADFRAME)
+			debug(DEBUG_DWARF, "error %d", ret);
 
 		c->valid = 0;
 	}
@@ -1995,11 +1983,14 @@ fail:
 	return ret;
 }
 
-int dwarf_get_unwind_table(struct task *task, struct libref *libref, struct dwarf_eh_frame_hdr *hdr)
+int dwarf_get_unwind_table(struct task *task, struct libref *libref)
 {
-	arch_addr_t addr, fde_count;
+	arch_addr_t addr;
+	arch_addr_t fde_count = 0;
+	arch_addr_t eh_frame = 0;
 	int ret;
 	struct dwarf_addr_space tmp_as;
+	struct dwarf_eh_frame_hdr *hdr = (struct dwarf_eh_frame_hdr *)(libref->mmap_addr + libref->eh_hdr_offset);
 
 	memset(&tmp_as, 0, sizeof(tmp_as));
 
@@ -2009,26 +2000,32 @@ int dwarf_get_unwind_table(struct task *task, struct libref *libref, struct dwar
 
 	if (hdr->version != DW_EH_VERSION) {
 		debug(DEBUG_DWARF, "exception table has unexpected version %d", hdr->version);
+		abort();
 		return -DWARF_ENOINFO;
 	}
 
 	addr = ARCH_ADDR_T(hdr + 1);
 
-	/* (Optionally) read eh_frame_ptr: */
+	/* read eh_frame_ptr: */
-	if ((ret = dwarf_read_encoded_pointer_local(&tmp_as, &addr, hdr->eh_frame_ptr_enc, NULL, 0)) < 0)
+	if ((ret = dwarf_read_encoded_pointer_local(&tmp_as, &addr, hdr->eh_frame_ptr_enc, &eh_frame, 0)) < 0) {
+		abort();
 		return -DWARF_ENOINFO;
+	}
 
 	/* (Optionally) read fde_count: */
-	if ((ret = dwarf_read_encoded_pointer_local(&tmp_as, &addr, hdr->fde_count_enc, &fde_count, 0)) < 0)
+	if ((ret = dwarf_read_encoded_pointer_local(&tmp_as, &addr, hdr->fde_count_enc, &fde_count, 0)) < 0) {
+		abort();
 		return -DWARF_ENOINFO;
+	}
 
 	if (hdr->table_enc != (DW_EH_PE_datarel | DW_EH_PE_sdata4)) {
 		debug(DEBUG_DWARF, "unsupported unwind table encoding.");
+		abort();
 		return -DWARF_EINVAL;
 	}
 
-	libref->table_data = (void *)addr;
+	libref->fde_tab = (void *)addr;
-	libref->table_len = fde_count;
+	libref->fde_count = fde_count;
 
 	return 0;
 }

dwarf.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *  This file is based on the libunwind source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
@@ -58,7 +58,7 @@
 #define DWARF_EINVAL		4	/* unsupported operation or bad value */
 #define DWARF_EBADVERSION	5	/* unwind info has unsupported version */
 #define DWARF_ENOINFO		6	/* no unwind info found */
-#define DWARF_STOPUNWIND	7	/* no unwind info found */
+#define DWARF_STOPUNWIND 	7
 
 struct dwarf_cie_info {
 	arch_addr_t start_ip;		/* first IP covered by this procedure */
@@ -115,7 +115,7 @@ int dwarf_locate_map(struct dwarf_addr_space *as, arch_addr_t ip);
 
 int dwarf_get(struct dwarf_addr_space *as, struct dwarf_loc loc, arch_addr_t *valp);
 
-int dwarf_get_unwind_table(struct task *task, struct libref *libref, struct dwarf_eh_frame_hdr *hdr);
+int dwarf_get_unwind_table(struct task *task, struct libref *libref);
 
 int dwarf_arch_init(struct dwarf_addr_space *as);
 int dwarf_arch_init_unwind(struct dwarf_addr_space *as);

event.c

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -53,10 +52,16 @@
 #include "timer.h"
 #include "trace.h"
 
+#define	RET_DELETED	1
+#define	RET_DEFERED	2
+
 static LIST_HEAD(event_head);
 
 void queue_event(struct task *task)
 {
+	assert(task->event.type != EVENT_NONE);
+	assert(task->stopped);
+
 	if (task) {
 		if (task->event.type != EVENT_NONE)
 			list_add_tail(&task->event.list, &event_head);
@@ -88,42 +93,37 @@ void init_event(struct task *task)
 	INIT_LIST_HEAD(&task->event.list);
 }
 
-static void show_clone(struct task *task, enum event_type type)
+static const char * get_clone_type(enum event_type type)
 {
-	const char *str;
-
 	switch(type) {
 	case EVENT_FORK:
-		str = "fork";
+		return "fork";
-		break;
 	case EVENT_VFORK:
-		str = "vfork";
+		return "vfork";
-		break;
 	case EVENT_CLONE:
-		str = "clone";
+		return "clone";
-		break;
 	default:
-		str = "?";
 		break;
 	}
-	fprintf(stderr, "+++ process pid=%d %s (newpid=%d) +++\n", task->pid, str, task->event.e_un.newpid);
+	return "?";
 }
 
-static void handle_clone(struct task *task, enum event_type type)
+static int do_clone(struct task *task, struct task *newtask)
 {
-	struct task *newtask;
+	debug(DEBUG_EVENT, "+++ process %s pid=%d, newpid=%d", get_clone_type(task->event.type), task->pid, newtask->pid);
-	int newpid = task->event.e_un.newpid;
-
-	debug(DEBUG_FUNCTION, "pid=%d, newpid=%d", task->pid, newpid);
 
 	if (unlikely(options.verbose))
-		show_clone(task, type);
+		fprintf(stderr, "+++ process %s pid=%d, newpid=%d\n", get_clone_type(task->event.type), task->pid, newtask->pid);
 
-	continue_task(task, 0);
+	assert(task->stopped);
+	assert(newtask->stopped);
+	assert(newtask->is_new);
 
-	newtask = pid2task(newpid);
+	if (unlikely(options.verbose && newtask->event.type != EVENT_NEW))
-	if (!newtask)
+		fprintf(stderr, "!!!task new unexpected event for pid=%d: %d\n", newtask->pid, newtask->event.type);
-		goto fail;
+	else
+	if (unlikely(options.verbose && newtask->event.e_un.signum))
+		fprintf(stderr, "!!!task new unexpected signal for pid=%d: %d\n", newtask->pid, newtask->event.e_un.signum);
 
 	if (newtask->leader == newtask) {
 		if (task_fork(task, newtask) < 0)
@@ -131,7 +131,7 @@ static void handle_clone(struct task *task, enum event_type type)
 
 		if (!options.follow) {
 			remove_proc(newtask);
-			return;
+			return RET_DELETED;
 		}
 
 		report_fork(newtask, task);
@@ -141,75 +141,130 @@ static void handle_clone(struct task *task, enum event_type type)
 			goto fail;
 	}
 
-	continue_task(newtask, newtask->event.e_un.signum);
+	newtask->is_new = 0;
-
+	return continue_task(newtask, 0);
-	return;
 fail:
-	fprintf(stderr,
+	fprintf(stderr, "Error during clone of pid=%d - This process won't be traced!\n", newtask->pid);
-		"Error during init of tracing process %d\n"
+	return -1;
-		"This process won't be traced.\n",
-		newpid
-	);
 }
 
-static void handle_signal(struct task *task)
+static int do_clone_cb(struct task *newtask, void *data)
 {
-	if (unlikely(options.verbose > 1)) {
+	int ret;
-		if (task->event.e_un.signum && (task->event.e_un.signum != SIGSTOP || !task->was_stopped))
+	struct task *task = data;
-			fprintf(stderr, "+++ process pid=%d signal %d: %s +++\n", task->pid, task->event.e_un.signum, strsignal(task->event.e_un.signum));
+
+	debug(DEBUG_EVENT, "+++ process do clone cb pid=%d, newpid=%d", task->pid, newtask->pid);
+
+	ret = do_clone(task, newtask);
+	continue_task(task, 0);
+	return ret;
+}
+
+static int handle_child(struct task *task)
+{
+	struct task *newtask;
+	int newpid = task->event.e_un.newpid;
+
+	debug(DEBUG_EVENT, "+++ process child pid=%d, newpid=%d", task->pid, newpid);
+
+	newtask = pid2task(newpid);
+
+	assert(newtask != NULL);
+
+	if (!newtask->stopped) {
+		debug(DEBUG_EVENT, "+++ process defer child pid=%d, newpid=%d", task->pid, newpid);
+		newtask->defer_func = do_clone_cb;
+		newtask->defer_data = task;
+		return RET_DEFERED;
 	}
 
-	continue_task(task, task->event.e_un.signum);
+	do_clone(task, newtask);
+	return continue_task(task, 0);
+}
+
+static int handle_signal(struct task *task)
+{
+	debug(DEBUG_EVENT, "+++ process signal pid=%d, event signal %d", task->pid, task->event.e_un.signum);
+
+	if (unlikely(options.verbose > 1)) {
+		if (task->event.e_un.signum)
+			fprintf(stderr, "+++ process pid=%d signal %d: %s\n", task->pid, task->event.e_un.signum, strsignal(task->event.e_un.signum));
+	}
+
+	return continue_task(task, task->event.e_un.signum);
 }
 
 static void show_exit(struct task *task)
 {
 	if (unlikely(options.verbose))
-		fprintf(stderr, "+++ process pid=%d exited (status=%d) +++\n", task->pid, task->event.e_un.ret_val);
+		fprintf(stderr, "+++ process pid=%d exited (status=%d)\n", task->pid, task->event.e_un.ret_val);
-
 }
 
-static void handle_about_exit(struct task *task)
+static int handle_new(struct task *task)
 {
+	debug(DEBUG_EVENT, "+++ process new pid=%d, event signal %d", task->pid, task->event.e_un.signum);
+
+	assert(task->is_new);
+
+	if (unlikely(options.verbose && task->event.e_un.signum))
+		fprintf(stderr, "!!!task unexpected signal for pid=%d: %d\n", task->pid, task->event.e_un.signum);
+	task->is_new = 0;
+
+	return continue_task(task, task->event.e_un.signum);
+}
+
+static int handle_about_exit(struct task *task)
+{
+	debug(DEBUG_EVENT, "+++ process pid=%d about exit", task->pid);
+
 	if (task->leader == task) {
 		if (!options.logfile && report_about_exit(task) != -1) {
 			task->about_exit = 1;
-			return;
+			return 0;
 		}
 	}
-	continue_task(task, 0);
+	return continue_task(task, 0);
 }
 
-static void handle_exit(struct task *task)
+static int handle_exit(struct task *task)
 {
+	debug(DEBUG_EVENT, "+++ process pid=%d exited (status=%d)", task->pid, task->event.e_un.ret_val);
+
 	show_exit(task);
 
 	if (task->leader == task) {
 		report_exit(task);
-		remove_proc(task);
+		untrace_proc(task);
 	}
 	else {
 		remove_task(task);
 	}
+	return RET_DELETED;
 }
 
-static void handle_exit_signal(struct task *task)
+static int handle_exit_signal(struct task *task)
 {
+	debug(DEBUG_EVENT, "+++ process pid=%d killed by signal %s (%d)", task->pid, strsignal(task->event.e_un.signum), task->event.e_un.signum);
+
 	if (unlikely(options.verbose))
-		fprintf(stderr, "+++ process pid=%d killed by signal %s (%d) +++\n", task->pid, strsignal(task->event.e_un.signum), task->event.e_un.signum);
+		fprintf(stderr, "+++ process pid=%d killed by signal %s (%d)\n", task->pid, strsignal(task->event.e_un.signum), task->event.e_un.signum);
 
 	if (task->leader == task) {
 		report_exit(task);
-		remove_proc(task);
+		untrace_proc(task);
 	}
 	else {
 		remove_task(task);
 	}
+	return RET_DELETED;
 }
 
-static void handle_exec(struct task *task)
+static int handle_exec(struct task *task)
 {
-	debug(DEBUG_FUNCTION, "pid=%d", task->pid);
+	debug(DEBUG_EVENT, "+++ process pid=%d exec", task->pid);
+
+	if (unlikely(options.verbose))
+		fprintf(stderr, "+++ process pid=%d exec\n", task->pid);
 
 	if (!options.follow_exec)
 		goto nofollow;
@@ -219,21 +274,20 @@ static void handle_exec(struct task *task)
 		goto untrace;
 	}
 
-	if (unlikely(options.verbose))
+	return continue_task(task, 0);
-		fprintf(stderr, "+++ process pid=%d exec (%s) +++\n", task->pid, library_execname(task));
-
-	continue_task(task, 0);
-	return;
 nofollow:
 	report_nofollow(task);
 untrace:
-	remove_proc(task);
+	untrace_proc(task);
+	return RET_DELETED;
 }
 
 static int handle_call_after(struct task *task, struct breakpoint *bp)
 {
 	struct timespec start;
 
+	(void)bp;
+
 	if (!task->breakpoint)
 		return 0;
 
@@ -256,16 +310,42 @@ static int handle_call_after(struct task *task, struct breakpoint *bp)
 	return 0;
 }
 
-static void handle_breakpoint(struct task *task)
+static int handle_breakpoint(struct task *task)
 {
 	struct breakpoint *bp = task->event.e_un.breakpoint;
 	unsigned int hw = bp->hw;
-	
+
-	debug(DEBUG_FUNCTION, "pid=%d, addr=%#lx", task->pid, bp->addr);
+	debug(DEBUG_EVENT, "+++ process pid=%d breakpoint  addr=%#lx", task->pid, bp->addr);
+
+	assert(task->stopped);
 
 	if (unlikely(options.verbose > 1))
 		set_timer(&task->halt_time, hw ? &hw_bp_time : &sw_bp_time);
 
+	if (unlikely(options.verbose))
+		++bp->count;
+
+	if (unlikely(task->skip_bp)) {
+		struct breakpoint *skip_bp = task->skip_bp;
+
+		task->skip_bp = NULL;
+
+		breakpoint_put(skip_bp);
+
+		if (likely(skip_bp == bp)) {
+			skip_breakpoint(task, bp);
+			goto end;
+		}
+
+		if (unlikely(options.verbose))
+			fprintf(stderr, "!!!unhandled skip breakpoint for pid=%d\n", task->pid);
+	}
+
+	if (unlikely(bp->deleted)) {
+		continue_task(task, 0);
+		goto end;
+	}
+
 #if HW_BREAKPOINTS > 1
 	if (bp->type >= BP_HW) {
 		if (unlikely(++bp->hwcnt >= (BP_REORDER_THRESHOLD << hw))) {
@@ -282,28 +362,7 @@ static void handle_breakpoint(struct task *task)
 	}
 #endif
 
-	if (unlikely(options.verbose))
+	if (bp->on_hit && bp->on_hit(task, bp)) {
-		++bp->count;
-
-	if (unlikely(task->skip_bp)) {
-		struct breakpoint *skip_bp = task->skip_bp;
-
-		task->skip_bp = NULL;
-
-		breakpoint_put(skip_bp);
-
-		if (likely(skip_bp == bp)) {
-			skip_breakpoint(task, bp);
-			goto end;
-		}
-	}
-
-	if (unlikely(bp->deleted)) {
-		continue_task(task, 0);
-		goto end;
-	}
-
-	if (unlikely(breakpoint_on_hit(task, bp))) {
 		continue_task(task, 0);
 		goto end;
 	}
@@ -313,7 +372,7 @@ static void handle_breakpoint(struct task *task)
 
 		save_param_context(task);
 
-		if (libsym->func->report_out || options.kill) {
+		if (libsym->func->report_out || !options.nocpp) {
 			task->breakpoint = breakpoint_insert(task, get_return_addr(task), NULL, BP_HW_SCRATCH);
 			if (likely(task->breakpoint)) {
 				task->libsym = libsym;
@@ -337,65 +396,85 @@ static void handle_breakpoint(struct task *task)
 		}
 	}
 
-	if (task->stopped)
+	if (task->bp_skipped)
+		task->bp_skipped = 0;
+	else
 		skip_breakpoint(task, bp);
-
 end:
 	breakpoint_put(bp);
+	return 0;
 }
 
-int handle_event(void)
+int handle_event(struct task *task)
 {
-	struct task *task = next_event();
+	int ret;
 
 	if (!task)
 		return 0;
 
+	debug(DEBUG_EVENT, "+++ process pid=%d event: %d", task->pid, task->event.type);
+
+	assert(task->stopped);
+
+	if (task->defer_func) {
+		ret = task->defer_func(task, task->defer_data);
+
+		if (ret == RET_DELETED)
+			return 1;
+
+		task->defer_func = NULL;
+		task->defer_data = NULL;
+		goto out2;
+	}
+
 	struct event *event = &task->event;
 	enum event_type type = event->type;
 
-	event->type = EVENT_NONE;
-	debug(DEBUG_FUNCTION, "pid=%d, type=%d", task->pid, event->type);
-
 	switch (type) {
 	case EVENT_NONE:
-		debug(DEBUG_EVENT_HANDLER, "pid=%d, event none", task->pid);
+		ret = continue_task(task, task->event.e_un.signum);
 		break;
 	case EVENT_SIGNAL:
-		debug(DEBUG_EVENT_HANDLER, "pid=%d, event signal %d", task->pid, event->e_un.signum);
+		ret = handle_signal(task);
-		handle_signal(task);
 		break;
 	case EVENT_ABOUT_EXIT:
-		debug(DEBUG_EVENT_HANDLER, "pid=%d, event exit %d", task->pid, event->e_un.ret_val);
+		ret = handle_about_exit(task);
-		handle_about_exit(task);
+		goto out1;
-		break;
 	case EVENT_EXIT:
-		debug(DEBUG_EVENT_HANDLER, "pid=%d, event exit %d", task->pid, event->e_un.ret_val);
+		ret = handle_exit(task);
-		handle_exit(task);
 		break;
 	case EVENT_EXIT_SIGNAL:
-		debug(DEBUG_EVENT_HANDLER, "pid=%d, event exit signal %d", task->pid, event->e_un.signum);
+		ret = handle_exit_signal(task);
-		handle_exit_signal(task);
 		break;
 	case EVENT_FORK:
 	case EVENT_VFORK:
 	case EVENT_CLONE:
-		debug(DEBUG_EVENT_HANDLER, "pid=%d, event clone (%u)", task->pid, event->e_un.newpid);
+		ret = handle_child(task);
-		handle_clone(task, type);
 		break;
 	case EVENT_EXEC:
-		debug(DEBUG_EVENT_HANDLER, "pid=%d, event exec()", task->pid);
+		ret = handle_exec(task);
-		handle_exec(task);
 		break;
 	case EVENT_BREAKPOINT:
-		debug(DEBUG_EVENT_HANDLER, "pid=%d, event breakpoint %#lx", task->pid, event->e_un.breakpoint->addr);
+		ret = handle_breakpoint(task);
-		handle_breakpoint(task);
+		goto out2;
+	case EVENT_NEW:
+		ret = handle_new(task);
 		break;
 	default:
-		fprintf(stderr, "Error! unknown event?\n");
+		fprintf(stderr, "fatal error, unknown event %d\n", type);
-		return -1;
+		abort();
 	}
 
-	return 1;
+	if (ret == RET_DELETED)
+		return 1;
+
+	if (ret != RET_DEFERED) {
+		assert(task->event.type == EVENT_NONE);
+		assert(task->stopped == 0);
+	}
+out2:
+	assert(task->is_new == 0);
+out1:
+	return (ret < 0) ? ret : 0;
 }
 

event.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -36,7 +36,8 @@ enum event_type {
 	EVENT_CLONE,
 	EVENT_VFORK,
 	EVENT_EXEC,
-	EVENT_BREAKPOINT
+	EVENT_BREAKPOINT,
+	EVENT_NEW,
 };
 
 struct event {
@@ -54,7 +55,7 @@ void init_event(struct task *task);
 void remove_event(struct task *task);
 struct task *next_event(void);
 void queue_event(struct task *task);
-int handle_event(void);
+int handle_event(struct task *task);
 
 #endif
 

forward.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

library.c

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -67,8 +66,8 @@ void libref_delete(struct libref *libref)
 		free(sym);
 	}
 
-	if (libref->image_addr)
+	if (libref->mmap_addr)
-		munmap(libref->image_addr, libref->load_size);
+		munmap(libref->mmap_addr, libref->txt_size);
 
 	free((void *)libref->filename);
 	free(libref);
@@ -113,7 +112,7 @@ struct library_symbol *library_symbol_new(struct libref *libref, arch_addr_t add
 	return libsym;
 }
 
-void library_delete(struct task *task, struct library *lib)
+static void library_delete(struct task *task, struct library *lib)
 {
 	if (lib == NULL)
 		return;
@@ -150,14 +149,14 @@ struct library_symbol *library_find_symbol(struct libref *libref, arch_addr_t ad
 	return NULL;
 }
 
-struct library *library_find_with_key(struct list_head *list, arch_addr_t key)
+struct library *library_find_by_dyn(struct list_head *list, arch_addr_t dyn)
 {
 	struct list_head *it;
 
 	list_for_each(it, list) {
 		struct library *lib = container_of(it, struct library, list);
 
-		if (lib->libref->key == key)
+		if (lib->libref->dyn == dyn)
 			return lib;
 	}
 	return NULL;
@@ -171,10 +170,10 @@ void library_delete_list(struct task *leader, struct list_head *list)
 		struct library *lib = container_of(it, struct library, list);
 		struct libref *libref = lib->libref;
 
-		debug(DEBUG_FUNCTION, "%s@%#lx", libref->filename, libref->base);
+		debug(DEBUG_FUNCTION, "%s@%#lx pid=%d ", libref->filename, libref->dyn, leader->pid);
 
 		if (unlikely(options.verbose > 1))
-			fprintf(stderr, "+++ library del pid=%d %s@%#lx %#lx-%#lx +++\n", leader->pid, libref->filename, libref->base, libref->load_addr, libref->load_addr + libref->load_size);
+			fprintf(stderr, "+++ library del pid=%d %s@%#lx %#lx-%#lx\n", leader->pid, libref->filename, libref->dyn, libref->txt_vaddr, libref->txt_vaddr + libref->txt_size);
 
 		library_delete(leader, lib);
 	}
@@ -211,11 +210,6 @@ static void library_each_symbol(struct libref *libref, void (*cb)(struct library
 	}
 }
 
-static inline int lib_addr_match(struct libref *libref, arch_addr_t addr)
-{
-	return addr >= libref->load_addr && addr < libref->load_addr + libref->load_size;
-}
-
 struct libref *addr2libref(struct task *leader, arch_addr_t addr)
 {
 	struct rb_node **new = &(leader->libraries_tree.rb_node);
@@ -224,10 +218,10 @@ struct libref *addr2libref(struct task *leader, arch_addr_t addr)
 	while (*new) {
 		struct libref *this = container_of(*new, struct library, rb_node)->libref;
 
-		if (lib_addr_match(this, addr))
+		if (addr >= this->txt_vaddr && addr < this->txt_vaddr + this->txt_size)
 			return this;
 
-		if (this->load_addr < addr)
+		if (this->txt_vaddr < addr)
 			new = &((*new)->rb_left);
 		else
 			new = &((*new)->rb_right);
@@ -246,7 +240,7 @@ static void insert_lib(struct task *leader, struct library *lib)
 
 		parent = *new;
 
-		if (this->libref->load_addr < lib->libref->load_addr)
+		if (this->libref->txt_vaddr < lib->libref->txt_vaddr)
 			new = &((*new)->rb_left);
 		else
 			new = &((*new)->rb_right);
@@ -259,15 +253,12 @@ static void insert_lib(struct task *leader, struct library *lib)
 
 static struct library *_library_add(struct task *leader, struct libref *libref)
 {
-	debug(DEBUG_PROCESS, "%s@%#lx to pid=%d", libref->filename, libref->base, leader->pid);
+	debug(DEBUG_PROCESS, "%s@%#lx to pid=%d", libref->filename, libref->dyn, leader->pid);
 
 	assert(leader->leader == leader);
 
 	struct library *lib = malloc(sizeof(*lib));
 
-	if (lib == NULL)
-		return NULL;
-
 	memset(lib, 0, sizeof(*lib));
 
 	lib->libref = libref_get(libref);
@@ -277,7 +268,7 @@ static struct library *_library_add(struct task *leader, struct libref *libref)
 	insert_lib(leader, lib);
 
 	if (unlikely(options.verbose > 1))
-		fprintf(stderr, "+++ library add pid=%d %s@%#lx %#lx-%#lx +++\n", leader->pid, libref->filename, libref->base, libref->load_addr, libref->load_addr + libref->load_size);
+		fprintf(stderr, "+++ library add pid=%d %s@%#lx %#lx-%#lx\n", leader->pid, libref->filename, libref->dyn, libref->txt_vaddr, libref->txt_vaddr + libref->txt_size);
 
 	return lib;
 }

library.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -44,12 +43,11 @@ struct library_symbol {
 };
 
 struct libref {
-	/* Unique key. Two library objects are considered equal, if
+	/* Unique dynamic entry address */
-	 * they have the same key.  */
+	arch_addr_t dyn;
-	arch_addr_t key;
 
-	/* Address where the library is mapped.  */
+	/* base address assign by the loader */
-	arch_addr_t base;
+	unsigned long bias;
 
 	/* Absolute address of the entry point.  Useful for main
 	 * binary, though I suppose the value might be useful for the
@@ -60,18 +58,21 @@ struct libref {
 	const char *filename;
 
 	/* executable segment */
-	unsigned long load_offset;
+	unsigned long txt_vaddr;
-	unsigned long load_addr;
+	unsigned long txt_size;
-	unsigned long load_size;
+	unsigned long txt_offset;
 
 	/* mapped image */
-	void *image_addr;
+	void *mmap_addr;
+	unsigned long mmap_offset;
+	unsigned long mmap_size;
 
 	/* global-pointer */
-	arch_addr_t gp;
+	arch_addr_t pltgot;
-	unsigned long seg_offset;
+	unsigned long eh_hdr_offset;
-	void *table_data;
+	unsigned long eh_hdr_vaddr;
-	unsigned long table_len;
+	void *fde_tab;
+	unsigned long fde_count;
 	unsigned int type;
 
 #ifdef __arm__
@@ -100,9 +101,6 @@ struct library {
 /* create a new symbol */
 struct library_symbol *library_symbol_new(struct libref *libref, arch_addr_t addr, const struct function *func);
 
-/* Delete library. Symbols are destroyed and freed. */
-void library_delete(struct task *leader, struct library *lib);
-
 /* Add a library to the list of the thread leader libraries.  */
 struct library *library_add(struct task *leader, struct libref *libref);
 
@@ -124,8 +122,8 @@ const char *library_execname(struct task *leader);
 /* Iterate through list of symbols of library. */
 struct library_symbol *library_find_symbol(struct libref *libref, arch_addr_t addr);
 
-/* find a library with a given key */
+/* find a library with a given dynamic entry address */
-struct library *library_find_with_key(struct list_head *list, arch_addr_t key);
+struct library *library_find_by_dyn(struct list_head *list, arch_addr_t dyn);
 
 /* create a library reference. */
 struct libref *libref_new(unsigned int type);

list.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *  This file is based on linux kernel list.h
  *
  * This program is free software; you can redistribute it and/or
@@ -55,41 +55,39 @@ static inline void INIT_LIST_HEAD(struct list_head *list)
  * This is only for internal list manipulation where we know
  * the prev/next entries already!
  */
-static inline void __list_add(struct list_head *new,
+static inline void __list_add(struct list_head *elem, struct list_head *prev, struct list_head *next)
-			      struct list_head *prev,
-			      struct list_head *next)
 {
-	next->prev = new;
+	next->prev = elem;
-	new->next = next;
+	elem->next = next;
-	new->prev = prev;
+	elem->prev = prev;
-	prev->next = new;
+	prev->next = elem;
 }
 
 /**
  * list_add - add a new entry
- * @new: new entry to be added
+ * @elem: new entry to be added
  * @head: list head to add it after
  *
  * Insert a new entry after the specified head.
  * This is good for implementing stacks.
  */
-static inline void list_add(struct list_head *new, struct list_head *head)
+static inline void list_add(struct list_head *elem, struct list_head *head)
 {
-	__list_add(new, head, head->next);
+	__list_add(elem, head, head->next);
 }
 
 
 /**
  * list_add_tail - add a new entry
- * @new: new entry to be added
+ * @elem: new entry to be added
  * @head: list head to add it before
  *
  * Insert a new entry before the specified head.
  * This is useful for implementing queues.
  */
-static inline void list_add_tail(struct list_head *new, struct list_head *head)
+static inline void list_add_tail(struct list_head *elem, struct list_head *head)
 {
-	__list_add(new, head->prev, head);
+	__list_add(elem, head->prev, head);
 }
 
 /*
@@ -212,7 +210,7 @@ static inline void list_splice_init(struct list_head *list,
  */
 #define list_for_each(pos, head) \
 	for (pos = (head)->next; prefetch(pos->next), pos != (head); \
-        	pos = pos->next)
+		pos = pos->next)
 
 /**
  * list_for_each_safe - iterate over a list safe against removal of list entry

main.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -39,7 +39,9 @@
 #include "backend.h"
 #include "breakpoint.h"
 #include "common.h"
+#ifndef DISABLE_CLIENT
 #include "client.h"
+#endif
 #include "debug.h"
 #include "options.h"
 #include "library.h"
@@ -59,6 +61,8 @@ struct mt_timer report_in_time;
 struct mt_timer report_out_time;
 struct mt_timer skip_bp_time;
 
+pid_t mtrace_pid;
+
 static int do_exit;
 
 void mtrace_request_exit(void)
@@ -67,7 +71,7 @@ void mtrace_request_exit(void)
 		return;
 
 	if (unlikely(options.verbose))
-		fprintf(stderr, "+++ request exit +++\n");
+		fprintf(stderr, "+++ request exit\n");
 
 	do_exit = 1;
 	wait_event_wakeup();
@@ -104,18 +108,20 @@ static void mtrace_exit(void)
 	each_pid(remove_task);
 }
 
-static void mtrace_init(char **cmd)
+static void mtrace_init(char **cmd_args)
 {
 	struct opt_p_t *opt_p_tmp;
 
+	mtrace_pid = getpid();
+
 	if (options.command) {
-		struct task *task = task_create(options.command, cmd);
+		struct task *task = task_create(cmd_args);
-			
+
 		if (!task)
 			exit(EXIT_FAILURE);
 
 		if (unlikely(options.verbose))
-			fprintf(stderr, "+++ process pid=%d created (%s) +++\n", task->pid, library_execname(task));
+			fprintf(stderr, "+++ process pid=%d created (%s)\n", task->pid, library_execname(task));
 	}
 
 	for(opt_p_tmp = options.opt_p; opt_p_tmp; opt_p_tmp = opt_p_tmp->next)
@@ -124,12 +130,17 @@ static void mtrace_init(char **cmd)
 
 static void mtrace_main(void)
 {
+	struct task *task;
+
 	while(!do_exit)  {
 		if (task_list_empty())
 			break;
 
-		if (handle_event() == -1)
+		task = next_event();
-			break;
+		if (task) {
+			if (handle_event(task) == -1)
+				break;
+		}
 
 		if (server_poll() == -1)
 			break;
@@ -138,9 +149,7 @@ static void mtrace_main(void)
 
 int main(int argc, char *argv[])
 {
-	char **cmd = process_options(argc, argv);
+	char **cmd_args = process_options(argc, argv);
-
-	init_pid_hash();
 
 	if (options.trace) {
 		if (options.logfile) {
@@ -153,7 +162,7 @@ int main(int argc, char *argv[])
 				exit(EXIT_FAILURE);
 		}
 		else {
-#if DISABLE_CLIENT
+#ifdef DISABLE_CLIENT
 			fprintf(stderr, "direct mode not supported\n");
 			exit(EXIT_FAILURE);
 #else
@@ -168,7 +177,7 @@ int main(int argc, char *argv[])
 		}
 	}
 	else {
-#if DISABLE_CLIENT
+#ifdef DISABLE_CLIENT
 		fprintf(stderr, "direct mode not supported\n");
 		exit(EXIT_FAILURE);
 #else
@@ -186,14 +195,14 @@ int main(int argc, char *argv[])
 	if (os_init())
 		exit(EXIT_FAILURE);
 
-	mtrace_init(cmd);
+	mtrace_init(cmd_args);
 	mtrace_main();
 	mtrace_exit();
 
 	report_info(0);
 	report_disconnect();
 
-#if !DISABLE_CLIENT
+#ifndef DISABLE_CLIENT
 	client_stop();
 #endif
 	server_stop();

main.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -23,6 +23,8 @@
 #ifndef _INC_MAIN_H
 #define _INC_MAIN_H
 
+#include <sys/types.h>
+
 #include "timer.h"
 
 void mtrace_request_exit(void);
@@ -36,5 +38,6 @@ struct mt_timer report_in_time;
 struct mt_timer report_out_time;
 struct mt_timer skip_bp_time;
 
+pid_t mtrace_pid;
 #endif
 

memtrace.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -31,7 +31,7 @@
 #define	IS64BIT	0
 #endif
 
-#define	MEMTRACE_SI_VERSION	7
+#define	MEMTRACE_SI_VERSION	9
 
 #define	MEMTRACE_SI_FORK	1
 #define	MEMTRACE_SI_EXEC	2
@@ -100,6 +100,7 @@ struct __attribute__((packed)) mt_pid_payload {
 
 struct __attribute__((packed)) mt_scan_payload {
 	uint32_t ptr_size;
+	uint32_t pad;	// for 64 bit alignment
 	uint64_t mask;
 	char data[0];
 };
@@ -135,6 +136,7 @@ struct __attribute__((packed)) mt_map_payload {
 	uint64_t addr;
 	uint64_t offset;
 	uint64_t size;
+	uint64_t bias;
 	char filename[0];
 };
 

mtelf.c

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -48,6 +47,34 @@
 #include "common.h"
 #include "report.h"
 
+#define PAGESIZE	4096
+#define PAGEALIGN	(PAGESIZE - 1)
+
+struct mt_elf {
+	int fd;
+	const char *filename;
+	Elf *elf;
+	unsigned long loadbase;
+	unsigned long loadsize;
+	unsigned long vstart;
+	GElf_Ehdr ehdr;
+	Elf_Data *dynsym;
+	size_t dynsym_count;
+	const char *dynstr;
+	Elf_Data *symtab;
+	const char *strtab;
+	size_t symtab_count;
+	GElf_Addr bias;
+	GElf_Addr entry_addr;
+	GElf_Addr base_addr;
+	GElf_Addr interp;
+	GElf_Phdr txt_hdr;
+	GElf_Phdr eh_hdr;
+	GElf_Addr dyn;
+	GElf_Phdr exidx_hdr;
+	GElf_Addr pltgot;
+};
+
 static int open_elf(struct mt_elf *mte, struct task *task, const char *filename)
 {
 	char *cwd;
@@ -217,48 +244,47 @@ static int populate_symtab(struct mt_elf *mte, struct libref *libref)
 	return populate_this_symtab(mte, libref, mte->dynsym, mte->dynstr, mte->dynsym_count);
 }
 
-static inline int elf_map_image(struct mt_elf *mte, void **image_addr)
+static inline int elf_map_image(struct mt_elf *mte, void **mmap_addr)
 {
 	void *addr;
-	volatile char *p;
 
-	addr = mmap(NULL, mte->txt_hdr.p_filesz, PROT_READ, MAP_PRIVATE, mte->fd, mte->txt_hdr.p_offset);
+	addr = mmap(NULL, mte->loadsize, PROT_READ, MAP_PRIVATE, mte->fd, mte->loadbase);
 	if (addr == MAP_FAILED) {
 		fprintf(stderr, "mmap failed\n");
 		return -1;
 	}
 
-	*image_addr = addr;
+	*mmap_addr = addr;
-
-	/* prefetch */
-	for(p = addr; (void *)p <= addr + mte->txt_hdr.p_filesz; p += PAGE_SIZE)
-		*p;
 
 	return 0;
 }
 
 static int elf_lib_init(struct mt_elf *mte, struct task *task, struct libref *libref)
 {
-	if (elf_map_image(mte, &libref->image_addr))
+	if (elf_map_image(mte, &libref->mmap_addr))
 		return -1;
 
-	libref->base = ARCH_ADDR_T(mte->base_addr);
 	libref->entry = ARCH_ADDR_T(mte->entry_addr);
-	libref->load_offset = mte->txt_hdr.p_offset;
+	libref->mmap_offset = mte->loadbase;
-	libref->load_addr = mte->txt_hdr.p_vaddr + mte->bias;
+	libref->mmap_size = mte->loadsize;
-	libref->load_size = mte->txt_hdr.p_filesz;
+	libref->txt_vaddr = mte->txt_hdr.p_vaddr - mte->vstart + mte->bias;
-	libref->seg_offset = mte->eh_hdr.p_offset;
+	libref->txt_size = mte->txt_hdr.p_filesz;
-	libref->gp = mte->pltgot;
+	libref->txt_offset = mte->txt_hdr.p_offset - mte->loadbase;
+	libref->bias = mte->bias;
+	libref->eh_hdr_offset = mte->eh_hdr.p_offset - mte->loadbase;
+	libref->eh_hdr_vaddr = mte->eh_hdr.p_vaddr - mte->vstart + mte->bias;
+	libref->pltgot = mte->pltgot - mte->vstart + mte->bias;
+	libref->dyn = mte->dyn - mte->vstart + mte->bias;
 
 #ifdef __arm__
 	if (mte->exidx_hdr.p_filesz) {
-		libref->exidx_data = libref->image_addr + mte->exidx_hdr.p_offset;
+		libref->exidx_data = libref->mmap_addr + mte->exidx_hdr.p_offset - mte->loadbase;
-		libref->exidx_len = mte->exidx_hdr.p_memsz;
+		libref->exidx_len = mte->exidx_hdr.p_filesz;
 	}
 #endif
 
-	if (mte->eh_hdr.p_filesz && mte->dyn_addr) {
+	if (mte->eh_hdr.p_filesz && mte->dyn) {
-		if (dwarf_get_unwind_table(task, libref, (struct dwarf_eh_frame_hdr *)(libref->image_addr - libref->load_offset + mte->eh_hdr.p_offset)) < 0)
+		if (dwarf_get_unwind_table(task, libref) < 0)
 			return -1;
 	}
 
@@ -273,11 +299,20 @@ static void close_elf(struct mt_elf *mte)
 	if (mte->fd != -1) {
 		elf_end(mte->elf);
 		close(mte->fd);
+
+		mte->fd = -1;
+		mte->filename = NULL;
 	}
 }
 
-static int elf_read(struct mt_elf *mte, struct task *task, const char *filename, GElf_Addr bias)
+static int elf_read(struct mt_elf *mte, struct task *task, const char *filename)
 {
+	unsigned long loadsize = 0;
+	unsigned long loadbase = ~0;
+	unsigned long align;
+	unsigned long vstart;
+	unsigned int loadsegs = 0;
+
 	debug(DEBUG_FUNCTION, "filename=%s", filename);
 
 	if (open_elf(mte, task, filename) < 0)
@@ -288,18 +323,31 @@ static int elf_read(struct mt_elf *mte, struct task *task, const char *filename,
 
 	memset(&mte->txt_hdr, 0, sizeof(mte->txt_hdr));
 	memset(&mte->eh_hdr, 0, sizeof(mte->eh_hdr));
-	memset(&mte->dyn_hdr, 0, sizeof(mte->dyn_hdr));
 	memset(&mte->exidx_hdr, 0, sizeof(mte->exidx_hdr));
 
 	for (i = 0; gelf_getphdr(mte->elf, i, &phdr) != NULL; ++i) {
-
 		switch (phdr.p_type) {
 		case PT_LOAD:
-			if (!mte->base_addr || mte->base_addr > phdr.p_vaddr + bias)
+			loadsegs++;
-				mte->base_addr = phdr.p_vaddr + bias;
+
+			align = phdr.p_align;
+			if (align)
+				align -= 1;
+
+			vstart = phdr.p_vaddr & ~align;
+
+			if (mte->vstart > vstart)
+				mte->vstart = vstart;
+
+			if (loadbase > phdr.p_offset)
+				loadbase = phdr.p_offset;
+
+			if (loadsize < phdr.p_offset + phdr.p_filesz)
+				loadsize = phdr.p_offset + phdr.p_filesz;
 
 			if ((phdr.p_flags & (PF_X | PF_W)) == PF_X)
 				mte->txt_hdr = phdr;
+
 			break;
 		case PT_GNU_EH_FRAME:
 			mte->eh_hdr = phdr;
@@ -310,22 +358,28 @@ static int elf_read(struct mt_elf *mte, struct task *task, const char *filename,
 			break;
 #endif
 		case PT_INTERP:
-			mte->interp = phdr.p_vaddr + bias;
+			mte->interp = phdr.p_vaddr;
+			break;
+		case PT_DYNAMIC:
+			mte->dyn = phdr.p_vaddr;
 			break;
 		default:
 			break;
 		}
 	}
 
-	if (!mte->base_addr) {
+	if (!loadsegs) {
-		fprintf(stderr, "Couldn't determine base address of %s\n", filename);
+		fprintf(stderr, "No loadable segemnts in %s\n", filename);
 		return -1;
 	}
 
-	debug(DEBUG_FUNCTION, "filename=`%s' load_offset=%#llx addr=%#llx size=%#llx",
+	mte->loadbase = loadbase & ~PAGEALIGN;
+	mte->loadsize = (loadsize + (loadbase - mte->loadbase) + PAGEALIGN) & ~PAGEALIGN;
+
+	debug(DEBUG_FUNCTION, "filename=`%s' text offset=%#llx addr=%#llx size=%#llx",
 			filename,
 			(unsigned long long)mte->txt_hdr.p_offset,
-			(unsigned long long)mte->txt_hdr.p_vaddr + bias,
+			(unsigned long long)mte->txt_hdr.p_vaddr,
 			(unsigned long long)mte->txt_hdr.p_filesz);
 
 	for (i = 1; i < mte->ehdr.e_shnum; ++i) {
@@ -366,16 +420,9 @@ static int elf_read(struct mt_elf *mte, struct task *task, const char *filename,
 					break;
 				}
 			}
-			
-			mte->dyn_addr = shdr.sh_addr + bias;
 		}
 	}
 
-	if (!mte->dyn_addr) {
-		fprintf(stderr, "Couldn't find .dynamic section \"%s\"\n", filename);
-		return -1;
-	}
-
 	if (!mte->dynsym || !mte->dynstr) {
 		fprintf(stderr, "Couldn't find .dynsym or .dynstr in \"%s\"\n", filename);
 		return -1;
@@ -391,11 +438,11 @@ int elf_read_library(struct task *task, struct libref *libref, const char *filen
 
 	libref_set_filename(libref, filename);
 
-	if (elf_read(&mte, task, filename, bias) == -1)
+	if (elf_read(&mte, task, filename) == -1)
 		return -1;
 
 	mte.bias = bias;
-	mte.entry_addr = mte.ehdr.e_entry + bias;
+	mte.entry_addr = mte.ehdr.e_entry - mte.vstart + bias;
 
 	ret = elf_lib_init(&mte, task, libref);
 
@@ -444,7 +491,7 @@ static arch_addr_t find_solib_break(struct mt_elf *mte)
 {
 	if (mte->symtab && mte->strtab) {
 		arch_addr_t addr = _find_solib_break(mte, mte->symtab, mte->strtab, mte->symtab_count);
-		
+
 		if (addr)
 			return addr;
 	}
@@ -470,7 +517,7 @@ static int entry_breakpoint_on_hit(struct task *task, struct breakpoint *a)
 	return 1;
 }
 
-struct libref *elf_read_main_binary(struct task *task)
+struct libref *elf_read_main_binary(struct task *task, int was_attached)
 {
 	char fname[PATH_MAX];
 	int ret;
@@ -494,9 +541,11 @@ struct libref *elf_read_main_binary(struct task *task)
 
 	fname[ret] = 0;
 
+	free(filename);
+
 	libref_set_filename(libref, fname);
 
-	if (elf_read(&mte, task, filename, 0) == -1)
+	if (elf_read(&mte, task, fname) == -1)
 		goto fail3;
 
 	task->is_64bit = is_64bit(&mte);
@@ -506,19 +555,15 @@ struct libref *elf_read_main_binary(struct task *task)
 		goto fail3;
 	}
 
-	free(filename);
+	mte.bias = entry - mte.ehdr.e_entry - mte.vstart;
-
+	mte.entry_addr = entry;
-	mte.bias = (GElf_Addr) (uintptr_t) entry - mte.ehdr.e_entry;
-	mte.entry_addr = (GElf_Addr) (uintptr_t) entry;
-
-	libref->key = ARCH_ADDR_T(mte.bias);
 
 	if (elf_lib_init(&mte, task, libref))
 		goto fail3;
 
 	close_elf(&mte);
 
-	report_attach(task);
+	report_attach(task, was_attached);
 
 	library_add(task, libref);
 
@@ -527,9 +572,12 @@ struct libref *elf_read_main_binary(struct task *task)
 
 	struct mt_elf mte_ld = { };
 
-	copy_str_from_proc(task, ARCH_ADDR_T(mte.interp), fname, sizeof(fname));
+	if (copy_str_from_proc(task, ARCH_ADDR_T(mte.bias + mte.interp - mte.vstart), fname, sizeof(fname)) == -1) {
+		fprintf(stderr, "fatal error: cannot get loader name for pid=%d\n", task->pid);
+		abort();
+	}
 
-	if (!elf_read(&mte_ld, task, fname, (GElf_Addr)base)) {
+	if (!elf_read(&mte_ld, task, fname)) {
 		struct libref *libref;
 
 		libref = libref_new(LIBTYPE_LOADER);
@@ -538,16 +586,14 @@ struct libref *elf_read_main_binary(struct task *task)
 
 		libref_set_filename(libref, fname);
 
-		mte_ld.bias = (GElf_Addr)base;
+		mte_ld.bias = base;
-		mte_ld.entry_addr = mte_ld.ehdr.e_entry + (GElf_Addr)base;
+		mte_ld.entry_addr = base + mte_ld.ehdr.e_entry  - mte.vstart;
-
-		libref->key = ARCH_ADDR_T(mte_ld.bias);
 
 		ret = elf_lib_init(&mte_ld, task, libref);
 		if (!ret) {
 			library_add(task, libref);
 
-			if (linkmap_init(task, ARCH_ADDR_T(mte.dyn_addr))) {
+			if (linkmap_init(task, ARCH_ADDR_T(mte.bias + mte.dyn - mte.vstart))) {
 				arch_addr_t addr = find_solib_break(&mte_ld);
 				if (!addr)
 					addr = ARCH_ADDR_T(entry);
@@ -562,7 +608,7 @@ struct libref *elf_read_main_binary(struct task *task)
 				else {
 					entry_bp->breakpoint.on_hit = entry_breakpoint_on_hit;
 					entry_bp->breakpoint.locked = 1;
-					entry_bp->dyn_addr = ARCH_ADDR_T(mte.dyn_addr);
+					entry_bp->dyn_addr = ARCH_ADDR_T(mte.bias + mte.dyn - mte.vstart);
 
 					breakpoint_enable(task, &entry_bp->breakpoint);
 				}
@@ -598,3 +644,8 @@ fail1:
 	return libref;
 }
 
+int mte_cmp_machine(struct mt_elf *mte, Elf64_Half type)
+{
+	return mte->ehdr.e_machine == type;
+}
+

mtelf.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -30,38 +29,12 @@
 #include "forward.h"
 #include "sysdep.h"
 
-struct mt_elf {
-	int fd;
-	const char *filename;
-	Elf *elf;
-	GElf_Ehdr ehdr;
-	Elf_Data *dynsym;
-	size_t dynsym_count;
-	const char *dynstr;
-	Elf_Data *symtab;
-	const char *strtab;
-	size_t symtab_count;
-	GElf_Addr dyn_addr;
-	GElf_Addr bias;
-	GElf_Addr entry_addr;
-	GElf_Addr base_addr;
-	GElf_Addr interp;
-	GElf_Phdr txt_hdr;
-	GElf_Phdr eh_hdr;
-	GElf_Phdr dyn_hdr;
-	GElf_Phdr exidx_hdr;
-	GElf_Addr pltgot;
-};
-
-struct elf_image {
-	void *addr;	/* pointer to mmap'd image */
-	size_t size;	/* (file-) size of the image */
-};
-
 int elf_read_library(struct task *task, struct libref *libref, const char *filename, GElf_Addr bias);
 
 /* Create a library object representing the main binary. */
-struct libref *elf_read_main_binary(struct task *task);
+struct libref *elf_read_main_binary(struct task *task, int was_attached);
+
+int mte_cmp_machine(struct mt_elf *mte, Elf64_Half type);
 
 #endif
 

mtrace-ng.1

@@ -165,6 +165,8 @@ void operator delete(void* p) __THROW
 void operator delete(void* p, const std::nothrow_t& nt) __THROW
 void operator delete[](void* p) __THROW
 void operator delete[](void* p, const std::nothrow_t& nt) __THROW
+void operator delete(void*, unsigned long)
+void operator delete[](void*, unsigned long)
 .fi
 .in
 .PP
@@ -306,6 +308,12 @@ Sort by the number of average allocations (number of bytes in used / number of o
 .RE
 .RE
 .RS
+\fIbadfree\fR
+.RS
+Sort by number of bad free releases (only useful with \-S option).
+.RE
+.RE
+.RS
 \fIbytes-leaked\fR
 .RS
 Sort by number of bytes leaked (only useful with \-a option).
@@ -348,8 +356,8 @@ Sort by number of bytes in use of all open allocations.
 .RE
 .RE
 .IP "\-S, \-\-sanity"
-Check mismatching operations against new/delete. This options also
+Check mismatching operations against new/delete or free releases. This options
-sets the sort-by options to mismatched.
+also sets the sort-by options to mismatched if no other sort option was set.
 .IP "\-t, \-\-trace"
 Run \fBmtrace-ng\fR in trace mode.  In this mode all attached processes will run under
 the control of \fBmtrace-ng\fR and all dynamic memory function calls will be traced.
@@ -399,7 +407,7 @@ at any time.  It accepts a maximum of three parameters:
 \fIsortby\fR
 .RS
 Sort the output of dump by the keyword.  The keyword is the same as for the
-\-S option (\fIallocations, \fIaverage\fR, \fIbytes-leaked\fR, \fIleaks\fR,
+\-S option (\fIallocations, \fIaverage\fR, \fIbadfree\fR \fIbytes-leaked\fR, \fIleaks\fR,
 \fImismatched\fR, \fIstacks\fR, \fItotal\fR, \fItsc\fR and \fIusage\fR).  See
 \-S option for more details about the sortby keywords.  The default sort order
 is \fIallocations\fR when no sortby parameter is used.

mtrace.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

options.c

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -39,6 +38,7 @@
 #include <pwd.h>
 
 #include "common.h"
+#include "debug.h"
 #include "options.h"
 
 #ifndef SYSCONFDIR
@@ -106,7 +106,7 @@ static void usage(void)
 		"                      allocations, average, bytes-leaked, leaks,\n"
 		"                      mismatched, stacks, total, tsc, usage\n"
 #endif
-		" -S, --sanity        check mismatching operations against new/delete\n"
+		" -S, --sanity        check for mismatching operations\n"
 		" -t, --trace         trace mode\n"
 		" -u, --user=USERNAME run command with the userid, groupid of username\n"
 		" -V, --version       output version information and exit\n"
@@ -119,14 +119,15 @@ static void usage(void)
 #ifdef DEBUG
 static void usage_debug(void)
 {
-	fprintf(stdout, "%s debugging option, --debug=<octal> or -D<octal>:\n", progname);
+	fprintf(stdout, "%s debugging option, --debug=<num> or -D<num>:\n", progname);
 	fprintf(stdout,
 		"\n"
-		" number  ref. in source   description\n"
+		" number  description\n"
-		"      1   general           Generally helpful progress information\n"
+		"      1   ptrace events\n"
-		"     10   event             Shows every event received by a traced process\n"
+		"      2   dwarf issues\n"
-		"     20   process           Shows actions carried upon a traced processes\n"
+		"      4   Shows every event received by a traced process\n"
-		"     40   function          Shows every entry to internal functions\n"
+		"      8   Shows actions carried upon a traced processes\n"
+		"     16   Shows every entry to internal functions\n"
 		"\n"
 		"Debugging options are mixed using bitwise-or.\n"
 		"Note that the meanings and values are subject to change.\n"
@@ -171,11 +172,11 @@ static char *search_for_command(char *filename)
 
 static int add_opt_F(char *filename)
 {
-	struct opt_F_t *tmp = malloc(sizeof(*tmp));
-
 	if (access(filename, R_OK))
 		return -1;
 
+	struct opt_F_t *tmp = malloc(sizeof(*tmp));
+
 	if (!tmp) {
 		fprintf(stderr, "%s\n", strerror(errno));
 		exit(1);
@@ -198,7 +199,7 @@ static void def_config(void)
 {
 	char *path;
 	char *filename;
-		
+
 	path = getenv("HOME");
 	if (!path) {
 		struct passwd *pwd = getpwuid(getuid());
@@ -409,9 +410,9 @@ char **process_options(int argc, char **argv)
 					usage_debug();
 					exit(0);
 				}
-				options.debug = strtoul(optarg, &p, 8);
+				options.debug = strtoul(optarg, &p, 0);
 				if (*p) {
-					fprintf(stderr, "%s: --debug requires an octal argument\n", progname);
+					fprintf(stderr, "%s: --debug requires an numeric argument\n", progname);
 					err_usage();
 				}
 #endif
@@ -504,6 +505,9 @@ char **process_options(int argc, char **argv)
 			if (!strncmp(optarg, "average", 2))
 				options.sort_by = OPT_SORT_AVERAGE;
 			else
+			if (!strncmp(optarg, "badfree", 1))
+				options.sort_by = OPT_SORT_BADFREE;
+			else
 			if (!strncmp(optarg, "bytes-leaked", 1))
 				options.sort_by = OPT_SORT_BYTES_LEAKED;
 			else
@@ -540,7 +544,7 @@ char **process_options(int argc, char **argv)
 			break;
 		case 'V':
 			printf("mtrace-ng version " PACKAGE_VERSION ".\n"
-			       "Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>.\n"
+			       "Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>.\n"
 			       "\n"
 			       "This software was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.\n"
 			       "\n"
@@ -666,7 +670,7 @@ char **process_options(int argc, char **argv)
 		}
 	}
 	else {
-		if (options.sanity)
+		if (options.sanity && options.sort_by == -1)
 			options.sort_by = OPT_SORT_MISMATCHED;
 	}
 

options.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -39,8 +38,7 @@
 #define OPT_SORT_TSC		6
 #define OPT_SORT_USAGE		7
 #define OPT_SORT_MISMATCHED	8
-
+#define OPT_SORT_BADFREE	9
-struct options_t options;
 
 struct opt_p_t {
 	pid_t pid;
@@ -92,6 +90,8 @@ struct options_t {
 	int lflag;		/* long dump */
 };
 
+extern struct options_t options;
+
 char **process_options(int argc, char **argv);
 
 #endif

rbtree.c

@@ -1,7 +1,6 @@
 /*
  * Red Black Trees
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
  *  This file is based on the linux kernel source
  *   Copyright (C) 1999  Andrea Arcangeli <andrea@suse.de>
  *   Copyright (C) 2002  David Woodhouse <dwmw2@infradead.org>
@@ -400,7 +399,7 @@ int rb_iterate(const struct rb_root *root, int (*func)(struct rb_node *,void *us
 
 			do {
 				parent = rb_parent(node);
-				
+
 				ret = func(node, user);
 				if (ret)
 					break;

rbtree.h

@@ -1,7 +1,6 @@
 /*
  * Red Black Trees
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
  *  This file is based on the linux kernel source
  *   Copyright (C) 1999  Andrea Arcangeli <andrea@suse.de>
  *

report.c

@@ -2,7 +2,7 @@
  * report events to client
  *
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -63,7 +63,7 @@ static void report_alloc64(struct task *task, enum mt_operation op, unsigned lon
 						if (unlikely(!alloc->data[i]))
 							break;
 
-						 ++i;
+						++i;
 					}
 				}
 
@@ -73,8 +73,6 @@ static void report_alloc64(struct task *task, enum mt_operation op, unsigned lon
 		}
 	}
 
-	skip_breakpoint(task, task->event.e_un.breakpoint);
-
 	server_send_msg(op, task->leader->pid, alloc, sizeof(*alloc) + i * sizeof(uint64_t));
 }
 
@@ -108,6 +106,7 @@ static void report_alloc32(struct task *task, enum mt_operation op, unsigned lon
 		}
 	}
 
+	task->bp_skipped = 1;
 	skip_breakpoint(task, task->event.e_un.breakpoint);
 
 	server_send_msg(op, task->leader->pid, alloc, sizeof(*alloc) + i * sizeof(uint32_t));
@@ -115,11 +114,11 @@ static void report_alloc32(struct task *task, enum mt_operation op, unsigned lon
 
 static void report_alloc(struct task *task, enum mt_operation op, unsigned long ptr, unsigned long size, int depth, struct library_symbol *libsym)
 {
+	debug(DEBUG_FUNCTION, "%d [%d]: %#lx %lu", op, task->pid, ptr, size);
+
 	if (!ptr)
 		return;
 
-	debug(DEBUG_FUNCTION, "%d [%d]: %#lx %lu", op, task->pid, ptr, size);
-
 	if (task_is_64bit(task))
 		report_alloc64(task, op, ptr, size, depth, libsym);
 	else
@@ -139,6 +138,23 @@ static void _report_malloc(struct task *task, struct library_symbol *libsym)
 	_report_alloc_op(task, libsym, MT_MALLOC);
 }
 
+#if 0
+static void _report_malloc1(struct task *task, struct library_symbol *libsym)
+{
+	unsigned long ret = fetch_retval(task);
+
+	report_alloc(task, MT_MALLOC, ret, 1, options.bt_depth, libsym);
+}
+#endif
+
+static void _report_reallocarray(struct task *task, struct library_symbol *libsym)
+{
+	unsigned long size = fetch_param(task, 1) * fetch_param(task, 2);
+	unsigned long ret = fetch_retval(task);
+
+	report_alloc(task, MT_MALLOC, ret, size, options.bt_depth, libsym);
+}
+
 static void _report_new(struct task *task, struct library_symbol *libsym)
 {
 	_report_alloc_op(task, libsym, options.sanity ? MT_NEW : MT_MALLOC);
@@ -173,14 +189,20 @@ static void report_delete_array(struct task *task, struct library_symbol *libsym
 
 static void _report_realloc(struct task *task, struct library_symbol *libsym)
 {
+	unsigned long size = fetch_param(task, 1);
 	unsigned long ret = fetch_retval(task);
 
-	if (ret) {
+	if (!task->in_realloc) {
-		unsigned long size = fetch_param(task, 1);
+		if (ret)
-
+			report_alloc(task, MT_REALLOC, ret, size, options.bt_depth, libsym);
-		report_alloc(task, MT_REALLOC, ret, size, options.bt_depth, libsym);
+		return;
 	}
 
+	task->in_realloc = 0;
+
+	if (ret)
+		report_alloc(task, MT_REALLOC, ret, size, options.bt_depth, libsym);
+
 	if (task_is_64bit(task)) {
 		struct mt_alloc_payload_64 *alloc = alloca(sizeof(*alloc));
 
@@ -203,7 +225,12 @@ static void report_realloc(struct task *task, struct library_symbol *libsym)
 {
 	unsigned long addr = fetch_param(task, 0);
 
-	report_alloc(task, MT_REALLOC_ENTER, addr, task->pid, options.sanity ? options.bt_depth : 0, libsym);
+	assert(!task->in_realloc);
+
+	if (addr) {
+		task->in_realloc = 1;
+		report_alloc(task, MT_REALLOC_ENTER, addr, task->pid, options.sanity ? options.bt_depth : 0, libsym);
+	}
 }
 
 static void _report_calloc(struct task *task, struct library_symbol *libsym)
@@ -214,6 +241,9 @@ static void _report_calloc(struct task *task, struct library_symbol *libsym)
 	report_alloc(task, MT_MALLOC, ret, size, options.bt_depth, libsym);
 }
 
+
+static ssize_t arch_pagesize = -1;
+
 static void _report_mmap(struct task *task, struct library_symbol *libsym)
 {
 	unsigned long ret = fetch_retval(task);
@@ -222,6 +252,11 @@ static void _report_mmap(struct task *task, struct library_symbol *libsym)
 		return;
 
 	unsigned long size = fetch_param(task, 1);
+	if (unlikely(arch_pagesize==-1)) arch_pagesize=getpagesize();
+	// fixup size, if size is not a multiple of the pagesize, we get the "partial" page too. -
+	if (size % arch_pagesize) {
+		size += arch_pagesize - size % arch_pagesize;
+	}
 
 	report_alloc(task, MT_MMAP, ret, size, options.bt_depth, libsym);
 }
@@ -242,7 +277,7 @@ static void _report_mmap64(struct task *task, struct library_symbol *libsym)
 	} size;
 
 	size.l = fetch_param(task, 1);
-	
+
 	if (!task_is_64bit(task)) {
 		size.v.v1 = fetch_param(task, 1);
 		size.v.v2 = fetch_param(task, 2);
@@ -250,17 +285,34 @@ static void _report_mmap64(struct task *task, struct library_symbol *libsym)
 	else
 		size.l = fetch_param(task, 1);
 
+	if (unlikely(arch_pagesize == -1)) arch_pagesize=getpagesize();
+	// fixup size, if size is not a multiple of the pagesize, we get the "partial" page too. -
+	if (size.l % arch_pagesize) {
+		size.l += arch_pagesize - size.l % arch_pagesize;
+	}
+
 	report_alloc(task, MT_MMAP64, ret, size.l, options.bt_depth, libsym);
 }
 
-static void report_munmap(struct task *task, struct library_symbol *libsym)
+static void _report_munmap(struct task *task, struct library_symbol *libsym)
 {
 	unsigned long addr = fetch_param(task, 0);
 	unsigned long size = fetch_param(task, 1);
+	unsigned long ret = fetch_retval(task);
+
+	if(ret != 0 ) return;
+
+	if(unlikely(arch_pagesize==-1)) arch_pagesize=getpagesize();
+
+	// fixup size, if needed: all pages in [addr, addr+size] are unmapped -- see munmap(2)
+	if(size % arch_pagesize) {
+		size += arch_pagesize - size % arch_pagesize;
+	}
 
 	report_alloc(task, MT_MUNMAP, addr, size, 0, libsym);
 }
 
+
 static void _report_memalign(struct task *task, struct library_symbol *libsym)
 {
 	unsigned long size = fetch_param(task, 1);
@@ -317,20 +369,20 @@ static void _report_pvalloc(struct task *task, struct library_symbol *libsym)
 	return report_alloc(task, MT_PVALLOC, ret, size, options.bt_depth, libsym);
 }
 
-static void report_mremap(struct task *task, struct library_symbol *libsym)
-{
-	unsigned long addr = fetch_param(task, 0);
-	unsigned long size = fetch_param(task, 1);
-
-	report_alloc(task, MT_MUNMAP, addr, size, 0, libsym);
-}
-
 static void _report_mremap(struct task *task, struct library_symbol *libsym)
 {
-	unsigned long size = fetch_param(task, 2);
+	unsigned long addr = fetch_param(task, 0);
+	unsigned long oldsize = fetch_param(task, 1);
+
+	unsigned long newsize = fetch_param(task, 2);
 	unsigned long ret = fetch_retval(task);
 
-	report_alloc(task, MT_MMAP, ret, size, options.bt_depth, libsym);
+	if( (void*)ret != MAP_FAILED) {
+		// mremap(2): if oldsize is zero and the mapping a shared mapping, a new mapping
+		// (Of the existing) will be created.
+		if (oldsize) report_alloc(task, MT_MUNMAP, addr, oldsize, 0, libsym);
+		report_alloc(task, MT_MMAP, ret, newsize, options.bt_depth, libsym);
+	}
 }
 
 static const struct function flist[] = {
@@ -341,13 +393,23 @@ static const struct function flist[] = {
 	{ "posix_memalign",					"posix_memalign",	0,	NULL,			_report_posix_memalign },
 	{ "mmap",						"mmap",			0,	NULL,			_report_mmap },
 	{ "mmap64",						"mmap64",		1,	NULL,			_report_mmap64 },
-	{ "munmap",						"munmap",		0,	report_munmap,		NULL },
+	{ "munmap",						"munmap",		0,	NULL,			_report_munmap },
 	{ "memalign",						"memalign",		0,	NULL,			_report_memalign },
 	{ "aligned_alloc",					"aligned_alloc",	1,	NULL,			_report_aligned_alloc },
 	{ "valloc",						"valloc",		1,	NULL,			_report_valloc },
 	{ "pvalloc",						"pvalloc",		1,	NULL,			_report_pvalloc },
-	{ "mremap",						"mremap",		0,	report_mremap,		_report_mremap },
+	{ "mremap",						"mremap",		0,	NULL,			_report_mremap },
 	{ "cfree",						"cfree",		1,	report_free,		NULL },
+	{ "reallocarray",					"reallocarray",		0,	NULL,			_report_reallocarray },
+#if 0
+	{ "strdup",						"strdup",		0,	NULL,			_report_malloc1 },
+	{ "strndup",						"strndup",		0,	NULL,			_report_malloc1 },
+	{ "__strdup",						"__strdup",		0,	NULL,			_report_malloc1 },
+	{ "__strndup",						"__strndup",		0,	NULL,			_report_malloc1 },
+	{ "asprintf",						"asprintf",		0,	NULL,			_report_malloc1 },
+	{ "vasprintf",						"vasprintf",		0,	NULL,			_report_malloc1 },
+	{ "__asprintf",						"__asprintf",		0,	NULL,			_report_malloc1 },
+#endif
 
 	{ "new(unsigned int)",					"_Znwj",		1,	NULL,			_report_new },
 	{ "new[](unsigned int)",				"_Znaj",		1,	NULL,			_report_new_array },
@@ -359,10 +421,32 @@ static const struct function flist[] = {
 	{ "new(unsigned long, std::nothrow_t const&)",		"_ZnwmRKSt9nothrow_t",	1,	NULL,			_report_new },
 	{ "new[](unsigned long, std::nothrow_t const&)",	"_ZnamRKSt9nothrow_t",	1,	NULL,			_report_new_array },
 
+	{ "new(unsigned int, std::align_val_t, std::nothrow_t const&)",		"_ZnwjSt11align_val_tRKSt9nothrow_t",	1,	NULL,	_report_new },
+	{ "new[](unsigned int, std::align_val_t, std::nothrow_t const&)",	"_ZnajSt11align_val_tRKSt9nothrow_t",	1,	NULL,	_report_new_array },
+	{ "new(unsigned int, std::align_val_t)",				"_ZnwjSt11align_val_t",			1,	NULL,	_report_new },
+	{ "new[](unsigned int, std::align_val_t)",				"_ZnajSt11align_val_t",			1,	NULL,	_report_new_array },
+	{ "new(unsigned long, std::align_val_t, std::nothrow_t const&)",	"_ZnwmSt11align_val_tRKSt9nothrow_t",	1,	NULL,	_report_new },
+	{ "new[](unsigned long, std::align_val_t, std::nothrow_t const&)",	"_ZnamSt11align_val_tRKSt9nothrow_t",	1,	NULL,	_report_new_array },
+	{ "new(unsigned long, std::align_val_t)",				"_ZnwmSt11align_val_t",			1,	NULL,	_report_new },
+	{ "new[](unsigned long, std::align_val_t)",				"_ZnamSt11align_val_t",			1,	NULL,	_report_new_array },
+
 	{ "delete(void*)",					"_ZdlPv",		1,	report_delete,		NULL },
 	{ "delete[](void*)",					"_ZdaPv",		1,	report_delete_array,	NULL },
 	{ "delete(void*, std::nothrow_t const&)",		"_ZdlPvRKSt9nothrow_t",	1,	report_delete,		NULL },
 	{ "delete[](void*, std::nothrow_t const&)",		"_ZdaPvRKSt9nothrow_t",	1,	report_delete_array,	NULL },
+	{ "delete(void*, unsigned int)",			"_ZdlPvj",		1,	report_delete,		NULL },
+	{ "delete[](void*, unsigned int)",			"_ZdaPvj",		1,	report_delete_array,	NULL },
+	{ "delete(void*, unsigned long)",			"_ZdlPvm",		1,	report_delete,		NULL },
+	{ "delete[](void*, unsigned long)",			"_ZdaPvm",		1,	report_delete_array,	NULL },
+
+	{ "delete(void*, std::align_val_t)",				"_ZdlPvSt11align_val_t",		1,	report_delete,		NULL },
+	{ "delete[](void*, std::align_val_t)",				"_ZdaPvSt11align_val_t",		1,	report_delete_array,	NULL },
+	{ "delete(void*, std::align_val_t, std::nothrow_t const&)",	"_ZdlPvSt11align_val_tRKSt9nothrow_t",	1,	report_delete,		NULL },
+	{ "delete[](void*, std::align_val_t, std::nothrow_t const&)",	"_ZdaPvSt11align_val_tRKSt9nothrow_t",	1,	report_delete_array,	NULL },
+	{ "delete(void*, unsigned int, std::align_val_t)",		"_ZdlPvjSt11align_val_t",		1,	report_delete,		NULL },
+	{ "delete[](void*, unsigned int, std::align_val_t)",		"_ZdaPvjSt11align_val_t",		1,	report_delete_array,	NULL },
+	{ "delete(void*, unsigned long, std::align_val_t)",		"_ZdlPvmSt11align_val_t",		1,	report_delete,		NULL },
+	{ "delete[](void*, unsigned long, std::align_val_t)",		"_ZdaPvmSt11align_val_t",		1,	report_delete_array,	NULL },
 };
 
 const struct function *flist_matches_symbol(const char *sym_name)
@@ -385,9 +469,10 @@ int _report_map(struct task *task, struct library *lib, enum mt_operation op)
 	size_t len = strlen(libref->filename) + 1;
 	struct mt_map_payload *payload = alloca(sizeof(struct mt_map_payload) + len);
 
-	payload->addr = libref->load_addr;
+	payload->addr = libref->txt_vaddr;
-	payload->offset = libref->load_offset;
+	payload->offset = libref->txt_offset;
-	payload->size = libref->load_size;
+	payload->size = libref->txt_size;
+	payload->bias = libref->bias;
 
 	memcpy(payload->filename, libref->filename, len);
 
@@ -459,9 +544,9 @@ int report_scan(pid_t pid, const void *data, unsigned int data_len)
 	return server_send_msg(MT_SCAN, pid, data, data_len);
 }
 
-int report_attach(struct task *task)
+int report_attach(struct task *task, int was_attached)
 {
-	struct mt_attached_payload state = { .attached = task->attached };
+	struct mt_attached_payload state = { .attached = !!was_attached };
 
 	if (!server_connected())
 		return -1;
@@ -523,7 +608,7 @@ static void report_process(struct task *leader)
 {
 	struct list_head *it;
 
-	report_attach(leader);
+	report_attach(leader, 1);
 
 	list_for_each(it, &leader->libraries_list) {
 		struct library *lib = container_of(it, struct library, list);

report.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -23,6 +23,8 @@
 #ifndef _INC_REPORT_H
 #define _INC_REPORT_H
 
+#include <unistd.h>
+
 #include "forward.h"
 
 struct function {
@@ -44,7 +46,7 @@ int report_add_map(struct task *task, struct library *lib);
 int report_del_map(struct task *task, struct library *lib);
 int report_info(int do_trace);
 int report_scan(pid_t pid, const void *data, unsigned int data_len);
-int report_attach(struct task *task);
+int report_attach(struct task *task, int was_attached);
 int report_fork(struct task *task, struct task *ptask);
 int report_exit(struct task *task);
 int report_about_exit(struct task *task);

server.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -31,6 +31,7 @@
 #include <sys/sysinfo.h>
 #include <semaphore.h>
 #include <netinet/tcp.h>
+#include <sys/uio.h>
 
 #include "backend.h"
 #include "breakpoint.h"
@@ -98,8 +99,7 @@ int server_poll(void)
 {
 	int ret = 0;
 
-
+	if (command_pending) {
- 	if (command_pending) {
 		ret = server_handle_command();
 
 		if (options.trace)
@@ -241,6 +241,8 @@ static void *server_listen_thread(void *ptr)
 {
 	int ret;
 
+	(void)ptr;
+
 	for(;;) {
 		if (!server_connected()) {
 			thread_enable_cancel();
@@ -307,6 +309,8 @@ static void *server_pair_thread(void *ptr)
 {
 	int ret;
 
+	(void)ptr;
+
 	for(;;) {
 		if (!server_connected())
 			break;
@@ -389,8 +393,11 @@ int server_stop(void)
 
 	if (listen_fd != -1) {
 		thread_cancel(thread);
-		if (thread)
+		if (thread) {
 			thread_join(thread);
+			free(thread);
+			thread = NULL;
+		}
 
 		if (is_named(options.address))
 			unlink(options.address);

server.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

sysdeps/Makefile.am

@@ -1,29 +0,0 @@
-# This file is part of mtrace-ng.
-# Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
-#
-# 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 2 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, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-# 02110-1301 USA
-
-DIST_SUBDIRS = \
-	linux-gnu
-
-SUBDIRS = \
-	$(HOST_OS)
-
-noinst_HEADERS = \
-	sysdep.h
-
-MAINTAINERCLEANFILES = \
-	Makefile.in

sysdeps/Makefile.in

@@ -1,656 +0,0 @@
-# Makefile.in generated by automake 1.15 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994-2014 Free Software Foundation, Inc.
-
-# This Makefile.in is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-# PARTICULAR PURPOSE.
-
-@SET_MAKE@
-
-# This file is part of mtrace-ng.
-# Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
-#
-# 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 2 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, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-# 02110-1301 USA
-
-VPATH = @srcdir@
-am__is_gnu_make = { \
-  if test -z '$(MAKELEVEL)'; then \
-    false; \
-  elif test -n '$(MAKE_HOST)'; then \
-    true; \
-  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
-    true; \
-  else \
-    false; \
-  fi; \
-}
-am__make_running_with_option = \
-  case $${target_option-} in \
-      ?) ;; \
-      *) echo "am__make_running_with_option: internal error: invalid" \
-              "target option '$${target_option-}' specified" >&2; \
-         exit 1;; \
-  esac; \
-  has_opt=no; \
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sysdeps/linux-gnu/arm/arch.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -47,6 +47,7 @@
 
 int is_64bit(struct mt_elf *mte)
 {
+	(void)(mte);
 	return 0;
 }
 
@@ -207,7 +208,7 @@ static int arm_get_next_pcs(struct task *task, const uint32_t pc, uint32_t next_
 			if (BITS(this_instr, 12, 15) != ARM_REG_PC)
 				break;
 
-			if (BITS(this_instr, 22, 25) == 0 && BITS(this_instr, 4, 7) == 9) 	/* multiply */
+			if (BITS(this_instr, 22, 25) == 0 && BITS(this_instr, 4, 7) == 9) /* multiply */
 				goto invalid;
 
 			/* BX <reg>, BLX <reg> */
@@ -669,7 +670,7 @@ static int ptrace_cont(struct task *task)
 	return 0;
 }
 
-int do_singlestep(struct task *task)
+int do_singlestep(struct task *task, struct breakpoint *bp)
 {
 	const uint32_t pc = get_instruction_pointer(task);
 	uint32_t cpsr;
@@ -690,7 +691,7 @@ int do_singlestep(struct task *task)
 
 	bp1 = breakpoint_find(task, next_pcs[0]);
 	if (!bp1) {
-		bp1 = breakpoint_new(task, next_pcs[0], NULL, SW_BP);
+		bp1 = breakpoint_new(task, next_pcs[0], NULL, BP_SW);
 		if (!bp1)
 			return -1;
 	}
@@ -702,7 +703,7 @@ int do_singlestep(struct task *task)
 	if (next_pcs[1]) {
 		bp2 = breakpoint_find(task, next_pcs[1]);
 		if (!bp2) {
-			bp2 = breakpoint_new(task, next_pcs[1], NULL, SW_BP);
+			bp2 = breakpoint_new(task, next_pcs[1], NULL, BP_SW);
 			if (!bp2)
 				return -1;
 		}
@@ -714,16 +715,13 @@ int do_singlestep(struct task *task)
 	else
 		bp2 = NULL;
 
-	ret = handle_singlestep(task, ptrace_cont);
+	ret = handle_singlestep(task, ptrace_cont, bp);
 
 	if (bp1)
 		breakpoint_disable(task, bp1);
 	if (bp2)
 		breakpoint_disable(task, bp2);
 
-	if (ret)
+	return ret;
-		return ret;
-
-	return 0;
 }
 

sysdeps/linux-gnu/arm/arch.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

sysdeps/linux-gnu/arm/cpu.cmake

@@ -0,0 +1,6 @@
+list(APPEND C_SRCS
+ sysdeps/${MT_OS}/${MT_CPU}/arch.c
+ sysdeps/${MT_OS}/${MT_CPU}/dwarf-arm.c
+ sysdeps/${MT_OS}/${MT_CPU}/regs.c
+)
+

sysdeps/linux-gnu/arm/dwarf-arm.c

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -33,7 +32,7 @@
 #include "common.h"
 #include "backend.h"
 #include "debug.h"
-#include "dwarf.h"
+#include "../../../dwarf.h"
 #include "library.h"
 #include "task.h"
 
@@ -154,6 +153,7 @@ static int is_signal_frame(struct dwarf_cursor *c)
 
 int dwarf_arch_map_reg(struct dwarf_addr_space *as, unsigned int reg)
 {
+	(void)(as);
 	if (reg >= ARRAY_SIZE(dwarf_to_regnum_map))
 		return -DWARF_EBADREG;
 
@@ -178,11 +178,13 @@ static inline int access_mem(struct dwarf_addr_space *as, arch_addr_t addr, void
 		struct dwarf_cursor *c = &as->cursor;
 		struct libref *libref = c->libref;
 
-		if (addr < ARCH_ADDR_T(libref->image_addr))
+		if (addr < ARCH_ADDR_T(libref->mmap_addr))
-			fatal("invalid access mem: addr %#lx < %p", addr, libref->image_addr);
+			fatal("invalid access mem: addr %#lx < %p", addr, libref->mmap_addr);
-		if (addr >= ARCH_ADDR_T(libref->image_addr + libref->load_size))
+		if (addr >= ARCH_ADDR_T(libref->mmap_addr + libref->mmap_size))
-			fatal("invalid access mem: addr %#lx >= %p", addr, libref->image_addr + libref->load_size);
+			fatal("invalid access mem: addr %#lx >= %p", addr, libref->mmap_addr + libref->mmap_size);
 	}
+#else
+	(void)(as);
 #endif
 
 	memcpy(valp, (void *)addr, size);
@@ -507,7 +509,7 @@ static unsigned long arm_search_unwind_table(struct dwarf_addr_space *as, arch_a
 {
 	struct dwarf_cursor *c = &as->cursor;
 	struct libref *libref = c->libref;
-	unsigned long map_offset = (unsigned long)libref->image_addr + libref->load_offset - libref->load_addr;
+	unsigned long map_offset = (unsigned long)libref->mmap_addr + libref->mmap_offset - libref->txt_vaddr;
 	unsigned long lo, hi, e, f;
 	arch_addr_t val;
 
@@ -612,7 +614,7 @@ static int arm_frame_step(struct dwarf_addr_space *as)
 		ip_loc = DWARF_MEM_LOC(fp);
 		fp_loc = DWARF_MEM_LOC(fp - 4);
 	}
-		
+
 	if (dwarf_get(as, ip_loc, &ip) < 0)
 		return -DWARF_EBADFRAME;
 
@@ -648,6 +650,8 @@ int dwarf_arch_step(struct dwarf_addr_space *as)
 
 int dwarf_arch_check_call(struct dwarf_addr_space *as, arch_addr_t ip)
 {
+	(void)(as);
+	(void)(ip);
 	return 1;
 }
 

sysdeps/linux-gnu/arm/regs.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -59,6 +59,11 @@ void set_instruction_pointer(struct task *task, arch_addr_t addr)
 	}
 }
 
+unsigned int ip_reg_addr(void)
+{
+	return offsetof(struct pt_regs, ARM_pc);
+}
+
 arch_addr_t get_return_addr(struct task *task)
 {
 	return ARCH_ADDR_T(task->context.regs.ARM_lr);

sysdeps/linux-gnu/ioevent.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

sysdeps/linux-gnu/ioevent.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

sysdeps/linux-gnu/os.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -44,6 +44,7 @@
 #include <pwd.h>
 #include <grp.h>
 #include <sys/prctl.h>
+#include <sys/sysmacros.h>
 
 #include "backend.h"
 #include "breakpoint.h"
@@ -59,9 +60,12 @@ struct map {
 	unsigned long long start;
 	unsigned long long end;
 };
- 
+
 static void report_fault(int signo, siginfo_t* siginf, void* arg)
 {
+	(void)siginf;
+	(void)arg;
+
 	fprintf(stderr, "fault signal %d (%s)\n", signo, strsignal(signo));
 
 #ifndef DISABLE_CLIENT
@@ -70,37 +74,37 @@ static void report_fault(int signo, siginfo_t* siginf, void* arg)
 	void *trace[48];
 	char **strings;
 	Dl_info info;
- 	char linkname[PATH_MAX];
+	char linkname[PATH_MAX];
 	bfd* abfd = 0;
 	asymbol **syms = 0;
 	asection *text = 0;
 	int l;
 
 	l = readlink("/proc/self/exe", linkname, sizeof(linkname));
- 	if (l == -1) {
+	if (l == -1) {
 		perror("failed to find executable\n");
 		return;
- 	}
+	}
 	linkname[l] = 0;
- 
-	bfd_init();
- 
- 	abfd = bfd_openr(linkname, 0);
- 	if (!abfd) {
- 		perror("bfd_openr failed: ");
- 		return;
- 	}
- 
-	/* oddly, this is required for it to work... */
- 	bfd_check_format(abfd,bfd_object);
- 
- 	unsigned storage_needed = bfd_get_symtab_upper_bound(abfd);
- 	syms = (asymbol **) malloc(storage_needed);
 
- 	bfd_canonicalize_symtab(abfd, syms);
+	bfd_init();
+
+	abfd = bfd_openr(linkname, 0);
+	if (!abfd) {
+		perror("bfd_openr failed: ");
+		return;
+	}
+
+	/* oddly, this is required for it to work... */
+	bfd_check_format(abfd,bfd_object);
+
+	unsigned storage_needed = bfd_get_symtab_upper_bound(abfd);
+	syms = (asymbol **) malloc(storage_needed);
+
+	bfd_canonicalize_symtab(abfd, syms);
 
 	text = bfd_get_section_by_name(abfd, ".text");
- 
+
 	nptrs = backtrace(trace, ARRAY_SIZE(trace));
 
 	strings = backtrace_symbols(trace, nptrs);
@@ -147,6 +151,8 @@ skip:
 
 static void signal_exit(int sig)
 {
+	(void)sig;
+
 	signal(SIGINT, SIG_IGN);
 	signal(SIGTERM, SIG_IGN);
 
@@ -216,7 +222,7 @@ static struct map *get_writeable_mappings(struct task *task)
 
 		if (permw != 'w' || permr != 'r')
 			continue;
-		
+
 		if (map >= maps_size - 1) {
 			maps_size += 16;
 			maps = realloc(maps, maps_size * sizeof(*maps));
@@ -250,6 +256,9 @@ void *mem_scan(struct task *task, struct mt_msg *cmd, void *payload, unsigned lo
 	unsigned long start;
 	unsigned long end;
 
+	if (unlikely(options.verbose))
+		fprintf(stderr, "+++ scan for memory leaks...\n");
+
 	if (!n)
 		return NULL;
 
@@ -315,7 +324,7 @@ finish:
 	return blocks;
 }
 
-void change_uid(const char *command)
+void change_uid(void)
 {
 	uid_t run_uid, run_euid;
 	gid_t run_gid, run_egid;
@@ -348,12 +357,11 @@ void change_uid(const char *command)
 		run_egid = run_gid;
 
 		if (!stat(options.command, &statbuf)) {
-			if (statbuf.st_mode & S_ISUID) {
+			if (statbuf.st_mode & S_ISUID)
 				run_euid = statbuf.st_uid;
-			}
+
-			if (statbuf.st_mode & S_ISGID) {
+			if (statbuf.st_mode & S_ISGID)
 				run_egid = statbuf.st_gid;
-			}
 		}
 		if (setregid(run_gid, run_egid) < 0) {
 			perror("mtrace-ng: setregid");
@@ -366,28 +374,6 @@ void change_uid(const char *command)
 	}
 }
 
-ssize_t sock_fd_write(int sock, void *buf, ssize_t buflen, int fd)
-{
-	ssize_t		size;
-	struct msghdr	msg;
-	struct iovec	iov;
-
-	iov.iov_base = buf;
-	iov.iov_len = buflen;
-
-	msg.msg_name = NULL;
-	msg.msg_namelen = 0;
-	msg.msg_iov = &iov;
-	msg.msg_iovlen = 1;
-
-	msg.msg_control = NULL;
-	msg.msg_controllen = 0;
-
-	size = sendmsg(sock, &msg, MSG_DONTWAIT);
-
-	return size;
-}
-
 int os_init(void)
 {
 	struct sigaction act;

sysdeps/linux-gnu/os.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

sysdeps/linux-gnu/ppc/Makefile.am

@@ -1,31 +0,0 @@
-# This file is part of mtrace-ng.
-# Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
-#
-# 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 2 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, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-# 02110-1301 USA
-
-noinst_LTLIBRARIES = \
-	../libcpu.la
-
-___libcpu_la_SOURCES = \
-	dwarf-ppc.c \
-	regs.c \
-	arch.c
-
-noinst_HEADERS = \
-	arch.h
-
-MAINTAINERCLEANFILES = \
-	Makefile.in

sysdeps/linux-gnu/ppc/Makefile.in

@@ -1,634 +0,0 @@
-# Makefile.in generated by automake 1.15 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994-2014 Free Software Foundation, Inc.
-
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-
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-# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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-
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-
-# This file is part of mtrace-ng.
-# Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
-#
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-
-../libcpu.la: $(___libcpu_la_OBJECTS) $(___libcpu_la_DEPENDENCIES) $(EXTRA____libcpu_la_DEPENDENCIES) ../$(am__dirstamp)
-	$(AM_V_CCLD)$(LINK)  $(___libcpu_la_OBJECTS) $(___libcpu_la_LIBADD) $(LIBS)
-
-mostlyclean-compile:
-	-rm -f *.$(OBJEXT)
-
-distclean-compile:
-	-rm -f *.tab.c
-
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/arch.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/dwarf-ppc.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/regs.Plo@am__quote@
-
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-@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
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-@am__fastdepCC_TRUE@	$(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
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-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LTCOMPILE) -c -o $@ $<
-
-mostlyclean-libtool:
-	-rm -f *.lo
-
-clean-libtool:
-	-rm -rf .libs _libs
-	-rm -rf ../.libs ../_libs
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-ID: $(am__tagged_files)
-	$(am__define_uniq_tagged_files); mkid -fID $$unique
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-	here=`pwd`; \
-	$(am__define_uniq_tagged_files); \
-	shift; \
-	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
-	  test -n "$$unique" || unique=$$empty_fix; \
-	  if test $$# -gt 0; then \
-	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
-	      "$$@" $$unique; \
-	  else \
-	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
-	      $$unique; \
-	  fi; \
-	fi
-ctags: ctags-am
-
-CTAGS: ctags
-ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
-	$(am__define_uniq_tagged_files); \
-	test -z "$(CTAGS_ARGS)$$unique" \
-	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
-	     $$unique
-
-GTAGS:
-	here=`$(am__cd) $(top_builddir) && pwd` \
-	  && $(am__cd) $(top_srcdir) \
-	  && gtags -i $(GTAGS_ARGS) "$$here"
-cscopelist: cscopelist-am
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-cscopelist-am: $(am__tagged_files)
-	list='$(am__tagged_files)'; \
-	case "$(srcdir)" in \
-	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
-	  *) sdir=$(subdir)/$(srcdir) ;; \
-	esac; \
-	for i in $$list; do \
-	  if test -f "$$i"; then \
-	    echo "$(subdir)/$$i"; \
-	  else \
-	    echo "$$sdir/$$i"; \
-	  fi; \
-	done >> $(top_builddir)/cscope.files
-
-distclean-tags:
-	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
-
-distdir: $(DISTFILES)
-	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
-	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
-	list='$(DISTFILES)'; \
-	  dist_files=`for file in $$list; do echo $$file; done | \
-	  sed -e "s|^$$srcdirstrip/||;t" \
-	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
-	case $$dist_files in \
-	  */*) $(MKDIR_P) `echo "$$dist_files" | \
-			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
-			   sort -u` ;; \
-	esac; \
-	for file in $$dist_files; do \
-	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
-	  if test -d $$d/$$file; then \
-	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
-	    if test -d "$(distdir)/$$file"; then \
-	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
-	    fi; \
-	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
-	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
-	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
-	    fi; \
-	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
-	  else \
-	    test -f "$(distdir)/$$file" \
-	    || cp -p $$d/$$file "$(distdir)/$$file" \
-	    || exit 1; \
-	  fi; \
-	done
-check-am: all-am
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-	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
-	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
-	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
-	fi
-mostlyclean-generic:
-
-clean-generic:
-
-distclean-generic:
-	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
-	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
-	-rm -f ../$(am__dirstamp)
-
-maintainer-clean-generic:
-	@echo "This command is intended for maintainers to use"
-	@echo "it deletes files that may require special tools to rebuild."
-	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
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-clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
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-	ctags-am distclean distclean-compile distclean-generic \
-	distclean-libtool distclean-tags distdir dvi dvi-am html \
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-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:

sysdeps/linux-gnu/ppc/arch.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -25,6 +25,6 @@
 
 int is_64bit(struct mt_elf *mte)
 {
-	return mte->ehdr.e_machine != EM_PPC;
+	return !mte_cmp_machine(mte, EM_PPC);
 }
 

sysdeps/linux-gnu/ppc/arch.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

sysdeps/linux-gnu/ppc/cpu.cmake

@@ -0,0 +1,6 @@
+list(APPEND C_SRCS
+ sysdeps/${MT_OS}/${MT_CPU}/arch.c
+ sysdeps/${MT_OS}/${MT_CPU}/dwarf-ppc.c
+ sysdeps/${MT_OS}/${MT_CPU}/regs.c
+)
+

sysdeps/linux-gnu/ppc/dwarf-ppc.c

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

sysdeps/linux-gnu/ppc/regs.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -74,6 +74,11 @@ void set_instruction_pointer(struct task *task, arch_addr_t addr)
 	}
 }
 
+unsigned int ip_reg_addr(void)
+{
+	return sizeof(unsigned long) * PT_NIP;
+}
+
 arch_addr_t get_return_addr(struct task *task)
 {
 #ifdef __powerpc64__

sysdeps/linux-gnu/proc.c

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -162,16 +161,16 @@ int process_tasks(pid_t pid, pid_t ** ret_tasks, size_t *ret_n)
 		return -1;
 
 	for(;;) {
-		struct dirent entry;
 		struct dirent *result;
 
-		if (readdir_r(d, &entry, &result) != 0) {
+		errno = 0;
-			free(tasks);
+		result = readdir(d);
-			return -1;
-		}
 
-		if (result == NULL)
+		if (!result) {
+			if (errno)
+				goto fail;
 			break;
+		}
 
 		if (result->d_type == DT_DIR && all_digits(result->d_name)) {
 			pid_t npid = atoi(result->d_name);
@@ -182,10 +181,9 @@ int process_tasks(pid_t pid, pid_t ** ret_tasks, size_t *ret_n)
 				alloc = n > 0 ? (2 * n) : 8;
 
 				ntasks = realloc(tasks, sizeof(*tasks) * alloc);
-				if (!ntasks) {
+				if (!ntasks)
-					free(tasks);
+					goto fail;
-					return -1;
+
-				}
 				tasks = ntasks;
 			}
 			tasks[n++] = npid;
@@ -198,6 +196,14 @@ int process_tasks(pid_t pid, pid_t ** ret_tasks, size_t *ret_n)
 	*ret_n = n;
 
 	return 0;
+fail:
+	free(tasks);
+	closedir(d);
+
+	*ret_tasks = NULL;
+	*ret_n = 0;
+
+	return -1;
 }
 
 /* On native 64-bit system, we need to be careful when handling cross
@@ -344,29 +350,17 @@ static int (*rdebug_fetcher(struct task *task))(struct task *, arch_addr_t, stru
 	return select_32_64(task, fetch_rd32, fetch_rd64);
 }
 
-static int fetch_auxv64_entry(int fd, Elf64_auxv_t *ret)
+#ifdef _LP64
+#define Elf_auxv_t	Elf64_auxv_t
+#else
+#define Elf_auxv_t	Elf32_auxv_t
+#endif
+
+static int fetch_auxv_entry(int fd, Elf_auxv_t *ret)
 {
-	/* Reaching EOF is as much problem as not reading whole
-	 * entry.  */
 	return read(fd, ret, sizeof(*ret)) == sizeof(*ret) ? 0 : -1;
 }
 
-static int fetch_auxv32_entry(int fd, Elf64_auxv_t *ret)
-{
-	Elf32_auxv_t auxv;
-
-	if (read(fd, &auxv, sizeof(auxv)) != sizeof(auxv))
-		return -1;
-
-	ret->a_type = auxv.a_type;
-	ret->a_un.a_val = auxv.a_un.a_val;
-	return 0;
-}
-
-static int (*auxv_fetcher(struct task *task)) (int, Elf64_auxv_t *) {
-	return select_32_64(task, fetch_auxv32_entry, fetch_auxv64_entry);
-}
-
 static void linkmap_add(struct task *task, struct lt_r_debug_64 *dbg)
 {
 	struct library *lib;
@@ -396,7 +390,7 @@ static void linkmap_add(struct task *task, struct lt_r_debug_64 *dbg)
 		}
 
 		/* Do we have that library already?  */
-		lib = library_find_with_key(&task->libraries_list, ARCH_ADDR_T(rlm.l_addr));
+		lib = library_find_by_dyn(&task->libraries_list, ARCH_ADDR_T(rlm.l_ld));
 		if (lib)
 			continue;
 
@@ -426,8 +420,6 @@ static void linkmap_add(struct task *task, struct lt_r_debug_64 *dbg)
 			continue;
 		}
 
-		libref->key = ARCH_ADDR_T(rlm.l_addr);
-
 		library_add(task, libref);
 	}
 
@@ -464,7 +456,7 @@ static void linkmap_del(struct task *task, struct lt_r_debug_64 *dbg)
 
 		addr = ARCH_ADDR_T(rlm.l_next);
 
-		lib = library_find_with_key(&tmp_list, ARCH_ADDR_T(rlm.l_addr));
+		lib = library_find_by_dyn(&tmp_list, ARCH_ADDR_T(rlm.l_ld));
 		if (lib)
 			list_move_tail(&lib->list, &task->libraries_list);
 	}
@@ -475,7 +467,6 @@ static void linkmap_del(struct task *task, struct lt_r_debug_64 *dbg)
 }
 
 static int load_debug_struct(struct task *task, arch_addr_t debug_addr, struct lt_r_debug_64 *ret)
-	
 {
 	debug(DEBUG_FUNCTION, "pid=%d", task->pid);
 
@@ -492,6 +483,8 @@ static int rdebug_bp_on_hit(struct task *task, struct breakpoint *bp)
 	struct lt_r_debug_64 rdbg;
 	struct task *leader = task->leader;
 
+	(void)bp;
+
 	debug(DEBUG_FUNCTION, "pid=%d", task->pid);
 
 	if (load_debug_struct(task, leader->os.debug_addr, &rdbg) < 0)
@@ -561,7 +554,7 @@ int process_get_entry(struct task *task, unsigned long *entryp, unsigned long *i
 {
 	PROC_PID_FILE(fn, "/proc/%d/auxv", task->pid);
 	int fd, ret;
-	
+
 	fd = open(fn, O_RDONLY);
 	if (fd == -1)
 		goto fail;
@@ -570,8 +563,9 @@ int process_get_entry(struct task *task, unsigned long *entryp, unsigned long *i
 	GElf_Addr at_bias = 0;
 
 	while (1) {
-		Elf64_auxv_t entry = { };
+		Elf_auxv_t entry = { };
-		if (auxv_fetcher(task)(fd, &entry) < 0)
+
+		if (fetch_auxv_entry(fd, &entry) < 0)
 			goto fail;
 
 		if (entry.a_type == AT_NULL)
@@ -584,8 +578,6 @@ int process_get_entry(struct task *task, unsigned long *entryp, unsigned long *i
 		case AT_ENTRY:
 			at_entry = entry.a_un.a_val;
 			break;
-		case AT_NULL:
-			break;
 		default:
 			break;
 		}
@@ -618,6 +610,7 @@ int os_task_init(struct task *task)
 
 void os_task_destroy(struct task *task)
 {
+	(void)task;
 }
 
 int os_task_clone(struct task *retp, struct task *task)

sysdeps/linux-gnu/socket.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -106,7 +106,7 @@ int sock_send_msg(int fd, enum mt_operation op, uint32_t pid, const void *payloa
 	}
 
 	ret = TEMP_FAILURE_RETRY(sendmsg(fd, &msghdr, MSG_NOSIGNAL));
-	
+
 	if ((size_t)ret != sizeof(mt_msg) + payload_len)
 		return -1;
 

sysdeps/linux-gnu/socket.h

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

sysdeps/linux-gnu/sysdeps.cmake

@@ -0,0 +1,14 @@
+list(APPEND C_SRCS
+ sysdeps/${MT_OS}/ioevent.c
+ sysdeps/${MT_OS}/os.c
+ sysdeps/${MT_OS}/proc.c
+ sysdeps/${MT_OS}/socket.c
+ sysdeps/${MT_OS}/thread.c
+ sysdeps/${MT_OS}/trace.c
+)
+
+include_directories("${PROJECT_SOURCE_DIR}/sysdeps/${MT_OS}")
+include_directories("${PROJECT_SOURCE_DIR}/sysdeps/${MT_OS}/${MT_CPU}")
+
+include(${CMAKE_SOURCE_DIR}/sysdeps/${MT_OS}/${MT_CPU}/cpu.cmake)
+

sysdeps/linux-gnu/thread.c

@@ -2,7 +2,7 @@
  * phtread thread wrapper
  *
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

sysdeps/linux-gnu/trace.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -39,10 +39,6 @@
 #include <sys/prctl.h>
 #include <sys/uio.h>
 
-#ifdef HAVE_LIBSELINUX
-#include <selinux/selinux.h>
-#endif
-
 #include "backend.h"
 #include "breakpoint.h"
 #include "debug.h"
@@ -56,34 +52,48 @@
 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
 static volatile pid_t wakeup_pid = -1;
 
-static int inline task_kill(struct task *task, int sig)
+static inline int task_kill(struct task *task, int sig)
 {
 	errno = 0;
 
 	return syscall(__NR_tgkill, task->leader->pid, task->pid, sig);
 }
 
+static inline int wait_task(struct task *task, int *status)
+{
+	int ret;
+
+	ret = TEMP_FAILURE_RETRY(waitpid(task ? task->pid : -1, status, __WALL));
+	if (ret == -1) {
+		if (unlikely(options.verbose && task))
+			fprintf(stderr, "!!!%s: waitpid pid=%d %s\n", __func__,  task->pid, strerror(errno));
+	}
+	return ret;
+}
+
 static int trace_setup(struct task *task, int status, int signum)
 {
-	int stop_signal;
+	int sig;
-
-	task->traced = 1;
-	task->stopped = 1;
-	task->leader->threads_stopped++;
-	task->event.type = EVENT_SIGNAL;
-	task->event.e_un.signum = 0;
 
 	if (!WIFSTOPPED(status)) {
-		fprintf(stderr, "%s pid=%d not stopped\n", __FUNCTION__, task->pid);
+		if (unlikely(options.verbose))
+			fprintf(stderr, "!!!%s: pid=%d not stopped\n", __func__, task->pid);
 		return -1;
 	}
 
-	stop_signal = WSTOPSIG(status);
+	task->attached = 1;
+	task->stopped = 1;
+	task->leader->threads_stopped++;
+	task->event.type = EVENT_NEW;
+	task->event.e_un.signum = 0;
 
-	if (stop_signal != signum) {
+	sig = WSTOPSIG(status);
-		task->event.e_un.signum = stop_signal;
 
-		fprintf(stderr, "%s pid=%d unexpected trace signal (got:%d expected:%d)\n", __FUNCTION__, task->pid, stop_signal, signum);
+	if (sig != signum) {
+		task->event.e_un.signum = sig;
+
+		if (unlikely(options.verbose))
+			fprintf(stderr, "!!!%s: pid=%d unexpected trace signal (got:%d expected:%d)\n", __func__, task->pid, sig, signum);
 		return -1;
 	}
 
@@ -94,10 +104,8 @@ static int _trace_wait(struct task *task, int signum)
 {
 	int status;
 
-	if (unlikely(TEMP_FAILURE_RETRY(waitpid(task->pid, &status, __WALL)) != task->pid)) {
+	if (unlikely(wait_task(task, &status) == -1))
-		fprintf(stderr, "%s pid=%d %s\n", __FUNCTION__, task->pid, strerror(errno));
 		return -1;
-	}
 
 	if (WIFEXITED(status))
 		return -1;
@@ -107,35 +115,35 @@ static int _trace_wait(struct task *task, int signum)
 
 int trace_wait(struct task *task)
 {
+	assert(task->attached == 0);
+
 	if (_trace_wait(task, SIGTRAP))
 		return -1;
 
-	queue_event(task);
-
 	return 0;
 }
 
 static int child_event(struct task *task, enum event_type ev)
 {
-	unsigned long data;
+	unsigned long data = 0;
 
-	if (unlikely(ptrace(PTRACE_GETEVENTMSG, task->pid, NULL, &data) == -1)) {
+	debug(DEBUG_TRACE, "child event %d pid=%d, newpid=%d", ev, task->pid, task->event.e_un.newpid);
-		debug(DEBUG_EVENT, "PTRACE_GETEVENTMSG pid=%d %s", task->pid, strerror(errno));
+
-		return -1;
+	if (unlikely(ptrace(PTRACE_GETEVENTMSG, task->pid, NULL, &data) == -1))
-	}
+		debug(DEBUG_TRACE, "PTRACE_GETEVENTMSG pid=%d %s", task->pid, strerror(errno));
 
 	int pid = data;
 
+	if (!pid)
+		return -1;
+
 	if (!pid2task(pid)) {
 		struct task *child = task_new(pid);
 
 		if (unlikely(!child))
 			return -1;
 
-		if (_trace_wait(child, SIGSTOP)) {
+		child->attached = 1;
-			remove_task(child);
-			return -1;
-		}
 	}
 
 	task->event.e_un.newpid = pid;
@@ -146,108 +154,142 @@ static int child_event(struct task *task, enum event_type ev)
 
 static int _process_event(struct task *task, int status)
 {
-	int stop_signal;
+	int sig = WSTOPSIG(status);
+
+	task->stopped = 1;
+
+	assert(task->event.type == EVENT_NONE);
 
 	if (WIFSIGNALED(status)) {
+		debug(DEBUG_TRACE, "EXIT_SIGNAL: pid=%d, signum=%d", task->pid, task->event.e_un.signum);
+
 		task->event.type = EVENT_EXIT_SIGNAL;
 		task->event.e_un.signum = WTERMSIG(status);
-		debug(DEBUG_EVENT, "EXIT_SIGNAL: pid=%d, signum=%d", task->pid, task->event.e_un.signum);
 		return 0;
 	}
 
 	if (WIFEXITED(status)) {
+		debug(DEBUG_TRACE, "EXIT: pid=%d, status=%d", task->pid, task->event.e_un.ret_val);
+
 		task->event.type = EVENT_EXIT;
 		task->event.e_un.ret_val = WEXITSTATUS(status);
-		debug(DEBUG_EVENT, "EXIT: pid=%d, status=%d", task->pid, task->event.e_un.ret_val);
 		return 0;
 	}
 
 	if (!WIFSTOPPED(status)) {
-		/* should never happen */
+		if (unlikely(options.verbose))
-		debug(DEBUG_EVENT, "NONE: pid=%d ???", task->pid);
+			fprintf(stderr, "!!!%s: not WIFSTOPPED pid=%d\n", __func__, task->pid);
 		return -1;
 	}
 
+	if (unlikely(task->is_new)) {
+		if (sig == SIGSTOP && !(status >> 16)) {
+			task->event.type = EVENT_NEW;
+			task->event.e_un.signum  = 0;
+
+			return 0;
+		}
+
+		if (!task->bad) {
+			if (unlikely(options.verbose))
+				fprintf(stderr, "!!!%s: unexpected state for pid=%d, expected signal SIGSTOP (%d %d)\n", __func__, task->pid, sig, status >> 16);
+			task->bad = 1;
+		}
+	}
+
 	switch(status >> 16)  {
+	case 0:
+		break;
 	case PTRACE_EVENT_VFORK:
-		if (child_event(task, EVENT_VFORK))
+		debug(DEBUG_TRACE, "VFORK: pid=%d, newpid=%d", task->pid, task->event.e_un.newpid);
-			return -1;
+		return child_event(task, EVENT_VFORK);
-		debug(DEBUG_EVENT, "VFORK: pid=%d, newpid=%d", task->pid, task->event.e_un.newpid);
-		return 0;
 	case PTRACE_EVENT_FORK:
-		if (child_event(task, EVENT_FORK))
+		debug(DEBUG_TRACE, "FORK: pid=%d, newpid=%d", task->pid, task->event.e_un.newpid);
-			return -1;
+		return child_event(task, EVENT_FORK);
-		debug(DEBUG_EVENT, "FORK: pid=%d, newpid=%d", task->pid, task->event.e_un.newpid);
-		return 0;
 	case PTRACE_EVENT_CLONE:
-		if (child_event(task, EVENT_CLONE))
+		debug(DEBUG_TRACE, "CLONE: pid=%d, newpid=%d", task->pid, task->event.e_un.newpid);
-			return -1;
+		return child_event(task, EVENT_CLONE);
-		debug(DEBUG_EVENT, "CLONE: pid=%d, newpid=%d", task->pid, task->event.e_un.newpid);
-		return 0;
 	case PTRACE_EVENT_EXEC:
 		task->event.type = EVENT_EXEC;
-		debug(DEBUG_EVENT, "EXEC: pid=%d", task->pid);
+		debug(DEBUG_TRACE, "EXEC: pid=%d", task->pid);
 		return 0;
 	case PTRACE_EVENT_EXIT:
 	 {
-		unsigned long data;
+		unsigned long data = 0;
+
+		debug(DEBUG_TRACE, "ABOUT_EXIT: pid=%d", task->pid);
+
+		if (unlikely(ptrace(PTRACE_GETEVENTMSG, task->pid, NULL, &data) == -1))
+			debug(DEBUG_TRACE, "PTRACE_GETEVENTMSG pid=%d %s", task->pid, strerror(errno));
 
-		if (unlikely(ptrace(PTRACE_GETEVENTMSG, task->pid, NULL, &data) == -1)) {
-			debug(DEBUG_EVENT, "PTRACE_GETEVENTMSG pid=%d %s", task->pid, strerror(errno));
-			return -1;
-		}
 		task->event.e_un.ret_val = WEXITSTATUS(data);
 		task->event.type = EVENT_ABOUT_EXIT;
-		debug(DEBUG_EVENT, "ABOUT_EXIT: pid=%d", task->pid);
 		return 0;
 	 }
 	default:
+		if (unlikely(options.verbose))
+			fprintf(stderr, "!!!%s: PTRACE_EVENT_????? pid=%d %d\n", __func__, task->pid, status >> 16);
 		break;
 	}
 
-	stop_signal = WSTOPSIG(status);
+	if (unlikely(options.verbose && !sig))
+		fprintf(stderr, "!!!%s: sig == 0 pid=%d\n", __func__, task->pid);
+
+	if (sig == SIGSTOP) {
+		siginfo_t siginfo;
+
+		if (unlikely(ptrace(PTRACE_GETSIGINFO, task->pid, 0, &siginfo) == -1))
+			sig = 0;
+		else {
+			if (likely(siginfo.si_pid == mtrace_pid))
+				sig = 0;
+			else {
+				if (unlikely(options.verbose))
+					fprintf(stderr, "!!!%s: SIGSTOP pid=%d %d %d %d %d\n", __func__, task->pid, siginfo.si_signo, siginfo.si_errno, siginfo.si_code, siginfo.si_pid);
+			}
+		}
+	}
 
 	task->event.type = EVENT_SIGNAL;
-	task->event.e_un.signum = stop_signal;
+	task->event.e_un.signum = sig;
 
-	debug(DEBUG_EVENT, "SIGNAL: pid=%d, signum=%d", task->pid, stop_signal);
+	debug(DEBUG_TRACE, "SIGNAL: pid=%d, signum=%d", task->pid, sig);
-	return stop_signal;
+	return sig;
 }
 
-static void process_event(struct task *task, int status)
+static struct task * process_event(struct task *task, int status)
 {
-	int stop_signal;
 	struct task *leader = task->leader;
 	struct breakpoint *bp = NULL;
 	arch_addr_t ip;
+	int sig;
 
+	assert(task->stopped == 0);
 	assert(leader != NULL);
 
 	if (unlikely(options.verbose > 1))
 		start_time(&task->halt_time);
 
-	task->stopped = 1;
-	
 	leader->threads_stopped++;
 
-	stop_signal = _process_event(task, status);
+	sig = _process_event(task, status);
-
+	if (sig < 0) {
-	if (stop_signal == -1) {
-		task->event.type = EVENT_NONE;
 		continue_task(task, 0);
-		return;
+		return NULL;
 	}
 
-	if (stop_signal == 0)
+	if (task->event.type == EVENT_NONE) {
-		return;
+		continue_task(task, task->event.e_un.signum);
+		return NULL;
+	}
 
-	if (unlikely(stop_signal != SIGTRAP))
+	if (unlikely(sig != SIGTRAP))
-		return;
+		return task;
 
 	if (unlikely(fetch_context(task) == -1)) {
 		task->event.type = EVENT_NONE;
 		continue_task(task, 0);
-		return;
+		return NULL;
 	}
 
 	ip = get_instruction_pointer(task);
@@ -259,7 +301,6 @@ static void process_event(struct task *task, int status)
 		if (task->hw_bp[i] && task->hw_bp[i]->addr == ip) {
 			if (likely(get_hw_bp_state(task, i)))
 				bp = task->hw_bp[i];
-
 			break;
 		}
 	}
@@ -273,9 +314,9 @@ static void process_event(struct task *task, int status)
 	{
 		bp = breakpoint_find(leader, ip - DECR_PC_AFTER_BREAK);
 		if (unlikely(!bp)) {
-			task->event.type = EVENT_NONE;
+			if (unlikely(options.verbose))
-			continue_task(task, 0);
+				fprintf(stderr, "!!!%s: SIGTRAP pid=%d\n", __func__, task->pid);
-			return;
+			return task;
 		}
 #if HW_BREAKPOINTS > 0
 		assert(bp->type != BP_HW_SCRATCH);
@@ -293,30 +334,14 @@ static void process_event(struct task *task, int status)
 	task->event.type = EVENT_BREAKPOINT;
 	task->event.e_un.breakpoint = breakpoint_get(bp);
 
-	debug(DEBUG_EVENT, "BREAKPOINT: pid=%d, addr=%#lx", task->pid, task->event.e_un.breakpoint->addr);
+	debug(DEBUG_TRACE, "BREAKPOINT: pid=%d, addr=%#lx", task->pid, task->event.e_un.breakpoint->addr);
 
-	return;
+	return task;
-}
-
-static void trace_fail_warning(void)
-{
-#ifdef HAVE_LIBSELINUX
-	if (security_get_boolean_active("deny_ptrace") == 1)
-		fprintf(stderr,
-			"The SELinux boolean 'deny_ptrace' is enabled, which may prevent mtrace-ng\n"
-			"from tracing an other task. You can disable this process attach protection by\n"
-			"issuing 'setsebool deny_ptrace=0' in the superuser context.\n");
-#else
-		fprintf(stderr,
-			"Could not trace! Maybe the SELinux boolean 'deny_ptrace' is enabled, which may\n"
-			"prevent mtrace-ng from tracing an other tasks. Try to disable this process attach\n"
-			"protection by issuing 'setsebool deny_ptrace=0' in the superuser context.\n");
-#endif
 }
 
 void trace_me(void)
 {
-	debug(DEBUG_PROCESS, "pid=%d", getpid());
+	debug(DEBUG_TRACE, "pid=%d", getpid());
 
 	prctl(PR_SET_PDEATHSIG, SIGKILL);
 
@@ -326,72 +351,73 @@ void trace_me(void)
 	}
 }
 
-static inline int fix_signal(struct task *task, int signum)
+static inline int chk_signal(struct task *task, int signum)
 {
-	if (signum == SIGSTOP && task->was_stopped) {
+	if (unlikely(options.verbose)) {
-		task->was_stopped = 0;
+		if (signum == SIGSTOP)
-		signum = 0;
+			fprintf(stderr, "!!!%s: SIGSTOP pid=%d\n", __func__, task->pid);
+
+		if (signum == SIGTRAP)
+			fprintf(stderr, "!!!%s: SIGTRAP pid=%d\n", __func__, task->pid);
 	}
 	return signum;
 }
 
-int untrace_task(struct task *task, int signum)
+int untrace_task(struct task *task)
 {
-	int ret = 0;
+	int sig = 0;
 
-	assert(task->leader != NULL);
+	assert(task->stopped);
-
-	debug(DEBUG_PROCESS, "pid=%d", task->pid);
-
-	if (!task->stopped)
-		return 0;
 
 	if (unlikely(ptrace(PTRACE_SETOPTIONS, task->pid, 0, (void *)0) == -1)) {
 		if (errno != ESRCH)
 			fprintf(stderr, "PTRACE_SETOPTIONS pid=%d %s\n", task->pid, strerror(errno));
-		ret = -1;
+		return  -1;
-		goto skip;
 	}
 
-	signum = fix_signal(task, signum);
+	if (task->event.type == EVENT_SIGNAL || task->event.type == EVENT_NONE)
+		sig = chk_signal(task, sig);
 
-	if (unlikely(ptrace(PTRACE_DETACH, task->pid, 0, signum) == -1)) {
+	if (unlikely(ptrace(PTRACE_DETACH, task->pid, 0, sig) == -1)) {
-		if (task->traced) {
+		if (errno != ESRCH)
-			if (errno != ESRCH)
+			fprintf(stderr, "PTRACE_DETACH pid=%d %s\n", task->pid, strerror(errno));
-				fprintf(stderr, "PTRACE_DETACH pid=%d %s\n", task->pid, strerror(errno));
+		return -1;
-			ret = -1;
-			goto skip;
-		}
 	}
 
-	task_kill(task, SIGCONT);
+//	task_kill(task, SIGCONT);
-skip:
+	return 0;
-	task->leader->threads_stopped--;
+}
-	task->stopped = 0;
-	task->was_stopped = 0;
-	task->traced = 0;
 
-	return ret;
+void stop_task(struct task *task)
+{
+	assert(task->attached);
+	assert(task->leader != NULL);
+
+	if (!task->stopped) {
+		int status;
+
+		task_kill(task, SIGSTOP);
+
+		if (wait_task(task, &status) != -1)
+			_process_event(task, status);
+	}
 }
 
 int trace_attach(struct task *task)
 {
-	debug(DEBUG_PROCESS, "pid=%d", task->pid);
+	debug(DEBUG_TRACE, "pid=%d", task->pid);
 
-	assert(task->traced == 0);
+	assert(task->attached == 0);
 
 	if (unlikely(ptrace(PTRACE_ATTACH, task->pid, 0, 0) == -1)) {
 		if (errno != ESRCH)
 			fprintf(stderr, "PTRACE_ATTACH pid=%d %s\n", task->pid, strerror(errno));
-		trace_fail_warning();
 		return -1;
 	}
 
 	if (_trace_wait(task, SIGSTOP))
 		return -1;
 
-	queue_event(task);
-
 	return 0;
 }
 
@@ -399,7 +425,7 @@ int trace_set_options(struct task *task)
 {
 	long options = PTRACE_O_TRACEFORK | PTRACE_O_TRACEVFORK | PTRACE_O_TRACECLONE | PTRACE_O_TRACEEXEC | PTRACE_O_TRACEEXIT;
 
-	debug(DEBUG_PROCESS, "pid=%d", task->pid);
+	debug(DEBUG_TRACE, "pid=%d", task->pid);
 
 	if (unlikely(ptrace(PTRACE_SETOPTIONS, task->pid, 0, (void *)options) == -1)) {
 		if (errno != ESRCH)
@@ -411,15 +437,22 @@ int trace_set_options(struct task *task)
 
 int continue_task(struct task *task, int signum)
 {
-	debug(DEBUG_PROCESS, "pid=%d", task->pid);
+	debug(DEBUG_TRACE, "continue task pid=%d", task->pid);
 
 	assert(task->leader != NULL);
 	assert(task->stopped);
 
+	if (unlikely(options.verbose && signum >= 0x80))
+		fprintf(stderr, "!!!%s: signum >= 0x80 pid=%d: %d\n", __func__, task->pid, signum);
+
 	task->leader->threads_stopped--;
 	task->stopped = 0;
+	task->event.type = EVENT_NONE;
 
-	if (unlikely(ptrace(PTRACE_CONT, task->pid, 0, fix_signal(task, signum)) == -1)) {
+	if (unlikely(options.verbose && signum == SIGTRAP))
+		fprintf(stderr, "!!!%s: SIGTRAP pid=%d\n", __func__, task->pid);
+
+	if (unlikely(ptrace(PTRACE_CONT, task->pid, 0, chk_signal(task, signum)) == -1)) {
 		if (errno != ESRCH)
 			fprintf(stderr, "PTRACE_CONT pid=%d %s\n", task->pid, strerror(errno));
 		return -1;
@@ -429,10 +462,12 @@ int continue_task(struct task *task, int signum)
 
 static void do_stop_cb(struct task *task, void *data)
 {
+	(void)data;
+
 	if (task->stopped)
 		return;
 
-	task->was_stopped = 1;
+	debug(DEBUG_TRACE, "task stop pid=%d", task->pid);
 
 	task_kill(task, SIGSTOP);
 }
@@ -443,6 +478,8 @@ void stop_threads(struct task *task)
 
 	assert(task->leader != NULL);
 
+	debug(DEBUG_TRACE, "stop threads pid=%d", task->pid);
+
 	if (leader->threads != leader->threads_stopped) {
 		struct timespec start;
 
@@ -451,62 +488,87 @@ void stop_threads(struct task *task)
 
 		each_task(leader, &do_stop_cb, NULL);
 
-		while (leader->threads != leader->threads_stopped)
+		while(leader->threads != leader->threads_stopped) {
-			queue_event(wait_event());
+			assert(leader->threads > leader->threads_stopped);
+
+			task = wait_event();
+			if (task)
+				queue_event(task);
+		}
 
 		if (unlikely(options.verbose > 1))
 			set_timer(&start, &stop_time);
 	}
 }
 
-int handle_singlestep(struct task *task, int (*singlestep)(struct task *task))
+int handle_singlestep(struct task *task, int (*singlestep)(struct task *task), struct breakpoint *bp)
 {
 	int status;
-	int stop_signal;
+	int sig;
 
-	for(;;) {
+	assert(task->stopped);
-		if (unlikely(singlestep(task) == -1))
+	assert(task->skip_bp == NULL);
-			return -1;
+	assert(bp->enabled == 0);
 
-		if (unlikely(TEMP_FAILURE_RETRY(waitpid(task->pid, &status, __WALL)) != task->pid)) {
+	task->event.type = EVENT_NONE;
-			fprintf(stderr, "%s waitpid pid=%d %s\n", __FUNCTION__,  task->pid, strerror(errno));
-			return -1;
-		}
 
-		stop_signal = _process_event(task, status);
+	if (unlikely(singlestep(task) == -1)) {
-
+		if (unlikely(options.verbose))
-		if (stop_signal == -1)
+			fprintf(stderr, "!!!%s: single step failed pid=%d\n", __func__, task->pid);
-			return -1;
+		return -1;
-
-		if (likely(stop_signal == SIGTRAP))
-			return 0; /* check if was a real breakpoint code there */
-
-		if (likely(!stop_signal)) {
-			queue_event(task);
-			return 0;
-		}
-
-		if (fix_signal(task, stop_signal) > 0) {
-			queue_event(task);
-			return 1;
-		}
 	}
+
+	if (unlikely(wait_task(task, &status) == -1))
+		return 0;
+
+	sig = _process_event(task, status);
+
+	if (sig == -1) {
+		if (unlikely(options.verbose))
+			fprintf(stderr, "!!!%s: failed _process_event pid=%d\n", __func__, task->pid);
+		return 0;
+	}
+
+	assert(task->stopped);
+	assert(task->event.type != EVENT_NONE);
+	assert(task->event.type != EVENT_BREAKPOINT);
+
+	if (task->event.type != EVENT_SIGNAL) {
+		queue_event(task);
+		return 1;
+	}
+
+	if (sig != SIGTRAP) {
+		if (unlikely(options.verbose && sig == SIGSTOP))
+			fprintf(stderr, "!!!%s: SIGSTOP pid=%d\n", __func__, task->pid);
+		queue_event(task);
+		return 1;
+	}
+
+ 	if (bp->break_insn) {
+		queue_event(task);
+		return 0;
+	}
+
+	task->event.type = EVENT_BREAKPOINT;
+	task->event.e_un.breakpoint = bp;
+	return 0;
 }
 
 #ifndef ARCH_SINGLESTEP
 static int ptrace_singlestep(struct task *task)
 {
 	if (unlikely(ptrace(PTRACE_SINGLESTEP, task->pid, 0, 0) == -1)) {
-		if (errno != ESRCH)
+		if (unlikely(options.verbose && errno != ESRCH))
-			fprintf(stderr, "%s PTRACE_SINGLESTEP pid=%d %s\n", __FUNCTION__, task->pid, strerror(errno));
+			fprintf(stderr, "!!!%s: PTRACE_SINGLESTEP pid=%d %s\n", __func__, task->pid, strerror(errno));
 		return -1;
 	}
 	return 0;
 }
 
-int do_singlestep(struct task *task)
+int do_singlestep(struct task *task, struct breakpoint *bp)
 {
-	return handle_singlestep(task, ptrace_singlestep);
+	return handle_singlestep(task, ptrace_singlestep, bp);
 }
 #endif
 
@@ -515,15 +577,11 @@ struct task *wait_event(void)
 	struct task *task;
 	int status;
 	int pid;
-	
+
-	pid = waitpid(-1, &status, __WALL);
+	pid = wait_task(NULL, &status);
 	if (unlikely(pid == -1)) {
-		if (errno != EINTR) {
+		if (errno == ECHILD)
-			if (errno == ECHILD)
+			debug(DEBUG_TRACE, "No more traced programs");
-				debug(DEBUG_EVENT, "No more traced programs");
-			else
-				fprintf(stderr, "%s waitpid %s\n", __FUNCTION__, strerror(errno));
-		}
 		return NULL;
 	}
 
@@ -543,12 +601,50 @@ struct task *wait_event(void)
 
 		if (likely(task))
 			trace_setup(task, status, SIGSTOP);
-
 		return NULL;
 	}
 
-	process_event(task, status);
+	if (unlikely(task->stopped)) {
+		if (WIFSIGNALED(status)) {
+			if (unlikely(options.verbose))
+				fprintf(stderr, "!!!%s: exit signal for stopped pid=%d\n", __func__, task->pid);
 
+			task->event.type = EVENT_EXIT_SIGNAL;
+			task->event.e_un.signum = WTERMSIG(status);
+			return NULL;
+		}
+
+		if (WIFEXITED(status)) {
+			if (unlikely(options.verbose))
+				fprintf(stderr, "!!!%s: exited process for stopped pid=%d\n", __func__, task->pid);
+
+			task->event.type = EVENT_EXIT;
+			task->event.e_un.ret_val = WEXITSTATUS(status);
+			return NULL;
+		}
+
+		if ((status >> 16) == PTRACE_EVENT_EXIT) {
+			unsigned long data = 0;
+
+			if (unlikely(options.verbose))
+				fprintf(stderr, "!!!%s: exit event for stopped pid=%d\n", __func__, task->pid);
+
+			debug(DEBUG_TRACE, "ABOUT_EXIT: pid=%d", task->pid);
+
+			if (unlikely(ptrace(PTRACE_GETEVENTMSG, task->pid, NULL, &data) == -1))
+				debug(DEBUG_TRACE, "PTRACE_GETEVENTMSG pid=%d %s", task->pid, strerror(errno));
+
+			task->event.e_un.ret_val = WEXITSTATUS(data);
+			task->event.type = EVENT_ABOUT_EXIT;
+			return NULL;
+		}
+
+		fprintf(stderr, "!!!%s: pid=%d already stopped (%u)\n", __func__, task->pid, task->event.type);
+	}
+
+	task = process_event(task, status);
+	if (task)
+		assert(task->stopped);
 	return task;
 }
 
@@ -603,7 +699,8 @@ ssize_t copy_from_proc(struct task *task, arch_addr_t addr, void *dst, size_t le
 
 		if (errno != EFAULT) {
 			if (errno != ENOSYS) {
-				fprintf(stderr, "%s pid=%d process_vm_readv: %s\n", __FUNCTION__, task->pid, strerror(errno));
+				if (unlikely(options.verbose))
+					fprintf(stderr, "!!!%s: pid=%d process_vm_readv: %s\n", __func__, task->pid, strerror(errno));
 				return -1;
 			}
 
@@ -740,10 +837,10 @@ ssize_t copy_str_from_proc(struct task *task, arch_addr_t addr, char *dst, size_
 
 	errno = 0;
 
-	if (--len < 0)
+	if (!len--)
 		return -1;
 
-	while (len) {
+	while(len) {
 		a.a = ptrace(PTRACE_PEEKTEXT, task->pid, addr, 0);
 		if (unlikely(a.a == -1 && errno)) {
 			if (num_bytes && errno == EIO)

sysdeps/linux-gnu/x86/Makefile.am

@@ -1,31 +0,0 @@
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-# Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
-#
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-#
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-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
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-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-# 02110-1301 USA
-
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-	../libcpu.la
-
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-	dwarf-x86.c \
-	regs.c \
-	arch.c
-
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-	arch.h
-
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-	Makefile.in

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-	list='$(am__tagged_files)'; \
-	case "$(srcdir)" in \
-	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
-	  *) sdir=$(subdir)/$(srcdir) ;; \
-	esac; \
-	for i in $$list; do \
-	  if test -f "$$i"; then \
-	    echo "$(subdir)/$$i"; \
-	  else \
-	    echo "$$sdir/$$i"; \
-	  fi; \
-	done >> $(top_builddir)/cscope.files
-
-distclean-tags:
-	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
-
-distdir: $(DISTFILES)
-	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
-	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
-	list='$(DISTFILES)'; \
-	  dist_files=`for file in $$list; do echo $$file; done | \
-	  sed -e "s|^$$srcdirstrip/||;t" \
-	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
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-	  */*) $(MKDIR_P) `echo "$$dist_files" | \
-			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
-			   sort -u` ;; \
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-	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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-	    || cp -p $$d/$$file "$(distdir)/$$file" \
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-# Tell versions [3.59,3.63) of GNU make to not export all variables.
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sysdeps/linux-gnu/x86/arch.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -106,17 +106,17 @@ static int set_breakpoint_mode(struct task *task, unsigned int n, int type, int
 	uint32_t mode;
 	uint32_t dr7, mask;
 
-	mask = (0b1111 << (16 + 4 * n)) | (0b11 << (2 * n));
+	mask = (0b1111U << (16 + 4 * n)) | (0b11U << (2 * n));
 
 	switch(type) {
 	case BP_X:
-		mode = 0b0000;
+		mode = 0b0000U;
 		break;
 	case BP_W:
-		mode = 0b0001;
+		mode = 0b0001U;
 		break;
 	case BP_RW:
-		mode = 0b0011;
+		mode = 0b0011U;
 		break;
 	default:
 		fprintf(stderr, "invalid hw breakpoint type\n");
@@ -125,37 +125,37 @@ static int set_breakpoint_mode(struct task *task, unsigned int n, int type, int
 
 	switch(len) {
 	case 1:
-		mode |= 0b0000;
+		mode |= 0b0000U;
 		break;
 	case 2:
-		mode |= 0b0100;
+		mode |= 0b0100U;
 		break;
 	case 4:
-		mode |= 0b1100;
+		mode |= 0b1100U;
 		break;
 	case 8:
-		mode |= 0b1000;
+		mode |= 0b1000U;
 		break;
 	}
 
 	dr7 = task->arch.dr7 & ~mask;
 
 	dr7 |= mode << (16 + 4 * n);
-	
+
 	if (local) {
-		dr7 |= 0b01 << (2 * n);
+		dr7 |= 0b01U << (2 * n);
 		dr7 |= 1 << 8;
 	}
 	else
-	if (!(dr7 & 0b01010101))
+	if (!(dr7 & 0b01010101U))
 		dr7 &= ~(1 << 8);
 
 	if (global) {
-		dr7 |= 0b10 << (2 * n);
+		dr7 |= 0b10U << (2 * n);
 		dr7 |= 1 << 9;
 	}
 	else
-	if (!(dr7 & 0b10101010))
+	if (!(dr7 & 0b10101010U))
 		dr7 &= ~(1 << 9);
 
 	return apply_hw_bp(task, dr7);
@@ -183,14 +183,14 @@ int reset_hw_bp(struct task *task, unsigned int n)
 {
 	uint32_t dr7, mask;
 
-	mask = (0b1111 << (16 + 4 * n)) | (0b11 << (2 * n));
+	mask = (0b1111U << (16 + 4 * n)) | (0b11U << (2 * n));
 
 	dr7 = task->arch.dr7 & ~mask;
 
-	if (!(dr7 & 0b01010101))
+	if (!(dr7 & 0b01010101U))
 		dr7 &= ~(1 << 8);
 
-	if (!(dr7 & 0b10101010))
+	if (!(dr7 & 0b10101010U))
 		dr7 &= ~(1 << 9);
 
 	return apply_hw_bp(task, dr7);
@@ -203,14 +203,14 @@ int reset_all_hw_bp(struct task *task)
 
 int is_64bit(struct mt_elf *mte)
 {
-	return mte->ehdr.e_machine != EM_386;
+	return !mte_cmp_machine(mte, EM_386);
 }
 
 int arch_task_init(struct task *task)
 {
 	unsigned int i;
 
-	for(i = 0; i < HW_BREAKPOINTS; ++i)
+	for(i = 0; i != HW_BREAKPOINTS; ++i)
 		task->arch.hw_bp[i] = 0;
 
 	return _apply_hw_bp(task, 0);
@@ -223,6 +223,9 @@ void arch_task_destroy(struct task *task)
 
 int arch_task_clone(struct task *retp, struct task *task)
 {
+	(void)retp;
+	(void)task;
+
 	return 0;
 }
 

sysdeps/linux-gnu/x86/arch.h

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *

sysdeps/linux-gnu/x86/cpu.cmake

@@ -0,0 +1,6 @@
+list(APPEND C_SRCS
+ sysdeps/${MT_OS}/${MT_CPU}/arch.c
+ sysdeps/${MT_OS}/${MT_CPU}/dwarf-x86.c
+ sysdeps/${MT_OS}/${MT_CPU}/regs.c
+)
+

sysdeps/linux-gnu/x86/dwarf-x86.c

@@ -1,7 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
- *  This file is based on the ltrace source
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -30,7 +29,7 @@
 #include "common.h"
 #include "backend.h"
 #include "debug.h"
-#include "dwarf.h"
+#include "../../../dwarf.h"
 #include "library.h"
 #include "task.h"
 
@@ -137,6 +136,7 @@ static inline int is_signal_frame(struct dwarf_cursor *c)
 
 static inline int is_plt_entry(struct dwarf_addr_space *as)
 {
+	(void)as;
 #if 0
 	struct dwarf_cursor *c = &as->cursor;
 	uint8_t data[12];
@@ -330,11 +330,11 @@ int dwarf_arch_check_call(struct dwarf_addr_space *as, arch_addr_t ip)
 	struct libref *libref = c->libref;
 
 	for(p = call_op; p->len; ++p) {
-		if (likely(ip - ARCH_ADDR_T(libref->load_addr) >= p->off)) {
+		if (likely(ip - ARCH_ADDR_T(libref->txt_vaddr) >= p->off)) {
 			unsigned int i;
-			unsigned char *addr = libref->image_addr + ip - p->off - libref->load_addr;
+			unsigned char *addr = libref->mmap_addr + ip - p->off - libref->txt_vaddr;
 
-			for(i = 0; i < call_op[i].len; ++i) {
+			for(i = 0; i < p->len; ++i) {
 				if (unlikely((addr[i] & p->mask[i]) != p->op[i]))
 					break;
 			}

sysdeps/linux-gnu/x86/regs.c

@@ -1,6 +1,6 @@
 /*
  * This file is part of mtrace-ng.
- * Copyright (C) 2015 Stefani Seibold <stefani@seibold.net>
+ * Copyright (C) 2018 Stefani Seibold <stefani@seibold.net>
  *
  * This work was sponsored by Rohde & Schwarz GmbH & Co. KG, Munich/Germany.
  *
@@ -91,12 +91,21 @@ void set_instruction_pointer(struct task *task, arch_addr_t addr)
 		fprintf(stderr, "pid=%d Couldn't set instruction pointer: %s\n", task->pid, strerror(errno));
 }
 
+unsigned int ip_reg_addr(void)
+{
+#ifdef __x86_64__
+	return sizeof(unsigned long) * RIP;
+#else
+	return sizeof(unsigned long) * EIP;
+#endif
+}
+
 arch_addr_t get_return_addr(struct task *task)
 {
 	long a;
-	
+
 	errno = 0;
-	
+
 	a = ptrace(PTRACE_PEEKTEXT, task->pid, get_stack_pointer(task), 0);
 	if (a == -1 && errno) {
 		if (errno != ESRCH)