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Implement core dump to minidump conversion.

Browse source 
This patch is part of a bigger patch that helps merging the breakpad code
with the modified version in Chromium OS.

Specifically, this patch makes the following changes:
1. Turn the LinuxDumper class into a base class and move ptrace related
   code into a new derived class, LinuxPtraceDumper.
2. Add a LinuxCoreDumper class, which is derived from LinuxDumper, to
   extract information from a crashed process via a core dump file instead
   of ptrace.
3. Add a WriteMinidumpFromCore function to
     src/client/linux/minidump_writer/minidump_writer.h,
   which uses LinuxCoreDumper to extract information from a core dump file.
4. Add a core2md utility, which simply wraps WriteMinidumpFromCore, for
   converting a core dump to a minidump.

BUG=455
TEST=Tested the following:
1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6.
2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock).
3. All unit tests pass.
4. Run Chromium OS tests to test core2md.
Review URL: http://breakpad.appspot.com/343001

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@905 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
benchan@chromium.org 2012-01-19 07:14:51 +00:00
parent 3822e36b20
commit 30566abed8
16 changed files with 1277 additions and 430 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
Makefile.am
View file

@ -66,6 +66,8 @@ src_client_linux_libbreakpad_client_a_SOURCES = \
src/client/linux/crash_generation/crash_generation_client.cc \
src/client/linux/handler/exception_handler.cc \
src/client/linux/minidump_writer/linux_dumper.cc \
src/client/linux/minidump_writer/linux_core_dumper.cc \
src/client/linux/minidump_writer/linux_ptrace_dumper.cc \
src/client/linux/minidump_writer/minidump_writer.cc \
src/client/minidump_file_writer.cc \
src/common/convert_UTF.c \
@ -214,6 +216,7 @@ bin_PROGRAMS += \
if !DISABLE_TOOLS
bin_PROGRAMS += \
src/tools/linux/core2md/core2md \
src/tools/linux/dump_syms/dump_syms \
src/tools/linux/md2core/minidump-2-core \
src/tools/linux/symupload/minidump_upload \
@ -289,10 +292,13 @@ src_client_linux_linux_client_unittest_SOURCES = \
src/client/linux/handler/exception_handler_unittest.cc \
src/client/linux/minidump_writer/directory_reader_unittest.cc \
src/client/linux/minidump_writer/line_reader_unittest.cc \
src/client/linux/minidump_writer/linux_dumper_unittest.cc \
src/client/linux/minidump_writer/linux_core_dumper_unittest.cc \
src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc \
src/client/linux/minidump_writer/minidump_writer_unittest.cc \
src/common/linux/linux_libc_support_unittest.cc \
src/common/linux/tests/crash_generator.cc \
src/common/memory_unittest.cc \
src/common/tests/file_utils.cc \
src/testing/gtest/src/gtest-all.cc \
src/testing/gtest/src/gtest_main.cc \
src/testing/src/gmock-all.cc \
@ -311,6 +317,8 @@ src_client_linux_linux_client_unittest_LDADD = \
src/client/linux/handler/exception_handler.o \
src/client/linux/crash_generation/crash_generation_client.o \
src/client/linux/minidump_writer/linux_dumper.o \
src/client/linux/minidump_writer/linux_core_dumper.o \
src/client/linux/minidump_writer/linux_ptrace_dumper.o \
src/client/linux/minidump_writer/minidump_writer.o \
src/client/minidump_file_writer.o \
src/common/convert_UTF.o \
@ -320,11 +328,20 @@ src_client_linux_linux_client_unittest_LDADD = \
src/common/linux/guid_creator.o \
src/common/linux/memory_mapped_file.o \
src/common/linux/safe_readlink.o \
src/common/string_conversion.o
src/common/string_conversion.o \
$(PTHREAD_CFLAGS) $(PTHREAD_LIBS)
src_client_linux_linux_client_unittest_DEPENDENCIES = src/client/linux/linux_dumper_unittest_helper src/client/linux/libbreakpad_client.a src/libbreakpad.a
src_client_linux_linux_client_unittest_DEPENDENCIES = \
src/client/linux/linux_dumper_unittest_helper \
src/client/linux/libbreakpad_client.a \
src/libbreakpad.a
if !DISABLE_TOOLS
src_tools_linux_core2md_core2md_SOURCES = \
src/tools/linux/core2md/core2md.cc
src_tools_linux_core2md_core2md_LDADD = \
src/client/linux/libbreakpad_client.a
src_tools_linux_dump_syms_dump_syms_SOURCES = \
src/common/dwarf_cfi_to_module.cc \
src/common/dwarf_cu_to_module.cc \

190
Makefile.in
View file

@ -80,6 +80,7 @@ check_PROGRAMS = $(am__EXEEXT_4) $(am__EXEEXT_5) $(am__EXEEXT_6) \
@LINUX_HOST_TRUE@ src/client/linux/linux_dumper_unittest_helper
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@am__append_6 = \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/core2md/core2md \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/dump_syms/dump_syms \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/md2core/minidump-2-core \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/symupload/minidump_upload \
@ -171,6 +172,8 @@ am__src_client_linux_libbreakpad_client_a_SOURCES_DIST = \
src/client/linux/crash_generation/crash_generation_client.cc \
src/client/linux/handler/exception_handler.cc \
src/client/linux/minidump_writer/linux_dumper.cc \
src/client/linux/minidump_writer/linux_core_dumper.cc \
src/client/linux/minidump_writer/linux_ptrace_dumper.cc \
src/client/linux/minidump_writer/minidump_writer.cc \
src/client/minidump_file_writer.cc src/common/convert_UTF.c \
src/common/md5.cc src/common/string_conversion.cc \
@ -182,6 +185,8 @@ am__dirstamp = $(am__leading_dot)dirstamp
@LINUX_HOST_TRUE@am_src_client_linux_libbreakpad_client_a_OBJECTS = src/client/linux/crash_generation/crash_generation_client.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/handler/exception_handler.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_dumper.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_core_dumper.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_ptrace_dumper.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/minidump_writer.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/minidump_file_writer.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/common/convert_UTF.$(OBJEXT) \
@ -352,7 +357,8 @@ src_third_party_libdisasm_libdisasm_a_OBJECTS = \
@DISABLE_PROCESSOR_FALSE@ src/processor/minidump_dump$(EXEEXT) \
@DISABLE_PROCESSOR_FALSE@ src/processor/minidump_stackwalk$(EXEEXT)
@LINUX_HOST_TRUE@am__EXEEXT_2 = src/client/linux/linux_dumper_unittest_helper$(EXEEXT)
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@am__EXEEXT_3 = src/tools/linux/dump_syms/dump_syms$(EXEEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@am__EXEEXT_3 = src/tools/linux/core2md/core2md$(EXEEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/dump_syms/dump_syms$(EXEEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/md2core/minidump-2-core$(EXEEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/symupload/minidump_upload$(EXEEXT) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/symupload/sym_upload$(EXEEXT)
@ -388,10 +394,12 @@ am__src_client_linux_linux_client_unittest_SOURCES_DIST = \
src/client/linux/handler/exception_handler_unittest.cc \
src/client/linux/minidump_writer/directory_reader_unittest.cc \
src/client/linux/minidump_writer/line_reader_unittest.cc \
src/client/linux/minidump_writer/linux_dumper_unittest.cc \
src/client/linux/minidump_writer/linux_core_dumper_unittest.cc \
src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc \
src/client/linux/minidump_writer/minidump_writer_unittest.cc \
src/common/linux/linux_libc_support_unittest.cc \
src/common/memory_unittest.cc \
src/common/linux/tests/crash_generator.cc \
src/common/memory_unittest.cc src/common/tests/file_utils.cc \
src/testing/gtest/src/gtest-all.cc \
src/testing/gtest/src/gtest_main.cc \
src/testing/src/gmock-all.cc \
@ -400,10 +408,13 @@ am__src_client_linux_linux_client_unittest_SOURCES_DIST = \
@LINUX_HOST_TRUE@am_src_client_linux_linux_client_unittest_OBJECTS = src/client/linux/handler/src_client_linux_linux_client_unittest-exception_handler_unittest.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-directory_reader_unittest.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-line_reader_unittest.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-minidump_writer_unittest.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/common/linux/src_client_linux_linux_client_unittest-linux_libc_support_unittest.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/common/src_client_linux_linux_client_unittest-memory_unittest.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/common/tests/src_client_linux_linux_client_unittest-file_utils.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/testing/gtest/src/src_client_linux_linux_client_unittest-gtest-all.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/testing/gtest/src/src_client_linux_linux_client_unittest-gtest_main.$(OBJEXT) \
@LINUX_HOST_TRUE@ src/testing/src/src_client_linux_linux_client_unittest-gmock-all.$(OBJEXT) \
@ -413,6 +424,7 @@ am__src_client_linux_linux_client_unittest_SOURCES_DIST = \
@LINUX_HOST_TRUE@ src/processor/src_client_linux_linux_client_unittest-pathname_stripper.$(OBJEXT)
src_client_linux_linux_client_unittest_OBJECTS = \
$(am_src_client_linux_linux_client_unittest_OBJECTS)
am__DEPENDENCIES_1 =
am__src_client_linux_linux_dumper_unittest_helper_SOURCES_DIST = src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc
@LINUX_HOST_TRUE@am_src_client_linux_linux_dumper_unittest_helper_OBJECTS = src/client/linux/minidump_writer/src_client_linux_linux_dumper_unittest_helper-linux_dumper_unittest_helper.$(OBJEXT)
src_client_linux_linux_dumper_unittest_helper_OBJECTS = \
@ -506,7 +518,6 @@ am__src_common_dumper_unittest_SOURCES_DIST = \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/testing/src/src_common_dumper_unittest-gmock-all.$(OBJEXT)
src_common_dumper_unittest_OBJECTS = \
$(am_src_common_dumper_unittest_OBJECTS)
am__DEPENDENCIES_1 =
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@src_common_dumper_unittest_DEPENDENCIES = \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ $(am__DEPENDENCIES_1) \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ $(am__DEPENDENCIES_1)
@ -900,6 +911,12 @@ am__src_processor_synth_minidump_unittest_SOURCES_DIST = \
src_processor_synth_minidump_unittest_OBJECTS = \
$(am_src_processor_synth_minidump_unittest_OBJECTS)
src_processor_synth_minidump_unittest_LDADD = $(LDADD)
am__src_tools_linux_core2md_core2md_SOURCES_DIST = \
src/tools/linux/core2md/core2md.cc
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@am_src_tools_linux_core2md_core2md_OBJECTS = src/tools/linux/core2md/core2md.$(OBJEXT)
src_tools_linux_core2md_core2md_OBJECTS = \
$(am_src_tools_linux_core2md_core2md_OBJECTS)
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@src_tools_linux_core2md_core2md_DEPENDENCIES = src/client/linux/libbreakpad_client.a
am__src_tools_linux_dump_syms_dump_syms_SOURCES_DIST = \
src/common/dwarf_cfi_to_module.cc \
src/common/dwarf_cu_to_module.cc \
@ -1021,6 +1038,7 @@ SOURCES = $(src_client_linux_libbreakpad_client_a_SOURCES) \
$(src_processor_static_map_unittest_SOURCES) \
$(src_processor_static_range_map_unittest_SOURCES) \
$(src_processor_synth_minidump_unittest_SOURCES) \
$(src_tools_linux_core2md_core2md_SOURCES) \
$(src_tools_linux_dump_syms_dump_syms_SOURCES) \
$(src_tools_linux_md2core_minidump_2_core_SOURCES) \
$(src_tools_linux_md2core_minidump_2_core_unittest_SOURCES) \
@ -1059,6 +1077,7 @@ DIST_SOURCES = \
$(am__src_processor_static_map_unittest_SOURCES_DIST) \
$(am__src_processor_static_range_map_unittest_SOURCES_DIST) \
$(am__src_processor_synth_minidump_unittest_SOURCES_DIST) \
$(am__src_tools_linux_core2md_core2md_SOURCES_DIST) \
$(am__src_tools_linux_dump_syms_dump_syms_SOURCES_DIST) \
$(am__src_tools_linux_md2core_minidump_2_core_SOURCES_DIST) \
$(am__src_tools_linux_md2core_minidump_2_core_unittest_SOURCES_DIST) \
@ -1203,6 +1222,8 @@ lib_LIBRARIES = $(am__append_1) $(am__append_3)
@LINUX_HOST_TRUE@ src/client/linux/crash_generation/crash_generation_client.cc \
@LINUX_HOST_TRUE@ src/client/linux/handler/exception_handler.cc \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_dumper.cc \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_core_dumper.cc \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_ptrace_dumper.cc \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/minidump_writer.cc \
@LINUX_HOST_TRUE@ src/client/minidump_file_writer.cc \
@LINUX_HOST_TRUE@ src/common/convert_UTF.c \
@ -1353,10 +1374,13 @@ TESTS_ENVIRONMENT =
@LINUX_HOST_TRUE@ src/client/linux/handler/exception_handler_unittest.cc \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/directory_reader_unittest.cc \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/line_reader_unittest.cc \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_dumper_unittest.cc \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_core_dumper_unittest.cc \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/minidump_writer_unittest.cc \
@LINUX_HOST_TRUE@ src/common/linux/linux_libc_support_unittest.cc \
@LINUX_HOST_TRUE@ src/common/linux/tests/crash_generator.cc \
@LINUX_HOST_TRUE@ src/common/memory_unittest.cc \
@LINUX_HOST_TRUE@ src/common/tests/file_utils.cc \
@LINUX_HOST_TRUE@ src/testing/gtest/src/gtest-all.cc \
@LINUX_HOST_TRUE@ src/testing/gtest/src/gtest_main.cc \
@LINUX_HOST_TRUE@ src/testing/src/gmock-all.cc \
@ -1376,6 +1400,8 @@ TESTS_ENVIRONMENT =
@LINUX_HOST_TRUE@ src/client/linux/handler/exception_handler.o \
@LINUX_HOST_TRUE@ src/client/linux/crash_generation/crash_generation_client.o \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_dumper.o \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_core_dumper.o \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/linux_ptrace_dumper.o \
@LINUX_HOST_TRUE@ src/client/linux/minidump_writer/minidump_writer.o \
@LINUX_HOST_TRUE@ src/client/minidump_file_writer.o \
@LINUX_HOST_TRUE@ src/common/convert_UTF.o \
@ -1385,9 +1411,20 @@ TESTS_ENVIRONMENT =
@LINUX_HOST_TRUE@ src/common/linux/guid_creator.o \
@LINUX_HOST_TRUE@ src/common/linux/memory_mapped_file.o \
@LINUX_HOST_TRUE@ src/common/linux/safe_readlink.o \
@LINUX_HOST_TRUE@ src/common/string_conversion.o
@LINUX_HOST_TRUE@ src/common/string_conversion.o \
@LINUX_HOST_TRUE@ $(PTHREAD_CFLAGS) $(PTHREAD_LIBS)
@LINUX_HOST_TRUE@src_client_linux_linux_client_unittest_DEPENDENCIES = \
@LINUX_HOST_TRUE@ src/client/linux/linux_dumper_unittest_helper \
@LINUX_HOST_TRUE@ src/client/linux/libbreakpad_client.a \
@LINUX_HOST_TRUE@ src/libbreakpad.a
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@src_tools_linux_core2md_core2md_SOURCES = \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/tools/linux/core2md/core2md.cc
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@src_tools_linux_core2md_core2md_LDADD = \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/client/linux/libbreakpad_client.a
@LINUX_HOST_TRUE@src_client_linux_linux_client_unittest_DEPENDENCIES = src/client/linux/linux_dumper_unittest_helper src/client/linux/libbreakpad_client.a src/libbreakpad.a
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@src_tools_linux_dump_syms_dump_syms_SOURCES = \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf_cfi_to_module.cc \
@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf_cu_to_module.cc \
@ -2178,6 +2215,12 @@ src/client/linux/minidump_writer/$(DEPDIR)/$(am__dirstamp):
src/client/linux/minidump_writer/linux_dumper.$(OBJEXT): \
src/client/linux/minidump_writer/$(am__dirstamp) \
src/client/linux/minidump_writer/$(DEPDIR)/$(am__dirstamp)
src/client/linux/minidump_writer/linux_core_dumper.$(OBJEXT): \
src/client/linux/minidump_writer/$(am__dirstamp) \
src/client/linux/minidump_writer/$(DEPDIR)/$(am__dirstamp)
src/client/linux/minidump_writer/linux_ptrace_dumper.$(OBJEXT): \
src/client/linux/minidump_writer/$(am__dirstamp) \
src/client/linux/minidump_writer/$(DEPDIR)/$(am__dirstamp)
src/client/linux/minidump_writer/minidump_writer.$(OBJEXT): \
src/client/linux/minidump_writer/$(am__dirstamp) \
src/client/linux/minidump_writer/$(DEPDIR)/$(am__dirstamp)
@ -2411,7 +2454,10 @@ src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-director
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-line_reader_unittest.$(OBJEXT): \
src/client/linux/minidump_writer/$(am__dirstamp) \
src/client/linux/minidump_writer/$(DEPDIR)/$(am__dirstamp)
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.$(OBJEXT): \
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.$(OBJEXT): \
src/client/linux/minidump_writer/$(am__dirstamp) \
src/client/linux/minidump_writer/$(DEPDIR)/$(am__dirstamp)
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.$(OBJEXT): \
src/client/linux/minidump_writer/$(am__dirstamp) \
src/client/linux/minidump_writer/$(DEPDIR)/$(am__dirstamp)
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-minidump_writer_unittest.$(OBJEXT): \
@ -2420,9 +2466,27 @@ src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-minidump
src/common/linux/src_client_linux_linux_client_unittest-linux_libc_support_unittest.$(OBJEXT): \
src/common/linux/$(am__dirstamp) \
src/common/linux/$(DEPDIR)/$(am__dirstamp)
src/common/linux/tests/$(am__dirstamp):
@$(MKDIR_P) src/common/linux/tests
@: > src/common/linux/tests/$(am__dirstamp)
src/common/linux/tests/$(DEPDIR)/$(am__dirstamp):
@$(MKDIR_P) src/common/linux/tests/$(DEPDIR)
@: > src/common/linux/tests/$(DEPDIR)/$(am__dirstamp)
src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.$(OBJEXT): \
src/common/linux/tests/$(am__dirstamp) \
src/common/linux/tests/$(DEPDIR)/$(am__dirstamp)
src/common/src_client_linux_linux_client_unittest-memory_unittest.$(OBJEXT): \
src/common/$(am__dirstamp) \
src/common/$(DEPDIR)/$(am__dirstamp)
src/common/tests/$(am__dirstamp):
@$(MKDIR_P) src/common/tests
@: > src/common/tests/$(am__dirstamp)
src/common/tests/$(DEPDIR)/$(am__dirstamp):
@$(MKDIR_P) src/common/tests/$(DEPDIR)
@: > src/common/tests/$(DEPDIR)/$(am__dirstamp)
src/common/tests/src_client_linux_linux_client_unittest-file_utils.$(OBJEXT): \
src/common/tests/$(am__dirstamp) \
src/common/tests/$(DEPDIR)/$(am__dirstamp)
src/testing/gtest/src/$(am__dirstamp):
@$(MKDIR_P) src/testing/gtest/src
@: > src/testing/gtest/src/$(am__dirstamp)
@ -2582,21 +2646,9 @@ src/common/linux/src_common_dumper_unittest-safe_readlink.$(OBJEXT): \
src/common/linux/src_common_dumper_unittest-safe_readlink_unittest.$(OBJEXT): \
src/common/linux/$(am__dirstamp) \
src/common/linux/$(DEPDIR)/$(am__dirstamp)
src/common/linux/tests/$(am__dirstamp):
@$(MKDIR_P) src/common/linux/tests
@: > src/common/linux/tests/$(am__dirstamp)
src/common/linux/tests/$(DEPDIR)/$(am__dirstamp):
@$(MKDIR_P) src/common/linux/tests/$(DEPDIR)
@: > src/common/linux/tests/$(DEPDIR)/$(am__dirstamp)
src/common/linux/tests/src_common_dumper_unittest-crash_generator.$(OBJEXT): \
src/common/linux/tests/$(am__dirstamp) \
src/common/linux/tests/$(DEPDIR)/$(am__dirstamp)
src/common/tests/$(am__dirstamp):
@$(MKDIR_P) src/common/tests
@: > src/common/tests/$(am__dirstamp)
src/common/tests/$(DEPDIR)/$(am__dirstamp):
@$(MKDIR_P) src/common/tests/$(DEPDIR)
@: > src/common/tests/$(DEPDIR)/$(am__dirstamp)
src/common/tests/src_common_dumper_unittest-file_utils.$(OBJEXT): \
src/common/tests/$(am__dirstamp) \
src/common/tests/$(DEPDIR)/$(am__dirstamp)
@ -2926,6 +2978,18 @@ src/processor/src_processor_synth_minidump_unittest-synth_minidump.$(OBJEXT): \
src/processor/synth_minidump_unittest$(EXEEXT): $(src_processor_synth_minidump_unittest_OBJECTS) $(src_processor_synth_minidump_unittest_DEPENDENCIES) src/processor/$(am__dirstamp)
@rm -f src/processor/synth_minidump_unittest$(EXEEXT)
$(CXXLINK) $(src_processor_synth_minidump_unittest_OBJECTS) $(src_processor_synth_minidump_unittest_LDADD) $(LIBS)
src/tools/linux/core2md/$(am__dirstamp):
@$(MKDIR_P) src/tools/linux/core2md
@: > src/tools/linux/core2md/$(am__dirstamp)
src/tools/linux/core2md/$(DEPDIR)/$(am__dirstamp):
@$(MKDIR_P) src/tools/linux/core2md/$(DEPDIR)
@: > src/tools/linux/core2md/$(DEPDIR)/$(am__dirstamp)
src/tools/linux/core2md/core2md.$(OBJEXT): \
src/tools/linux/core2md/$(am__dirstamp) \
src/tools/linux/core2md/$(DEPDIR)/$(am__dirstamp)
src/tools/linux/core2md/core2md$(EXEEXT): $(src_tools_linux_core2md_core2md_OBJECTS) $(src_tools_linux_core2md_core2md_DEPENDENCIES) src/tools/linux/core2md/$(am__dirstamp)
@rm -f src/tools/linux/core2md/core2md$(EXEEXT)
$(CXXLINK) $(src_tools_linux_core2md_core2md_OBJECTS) $(src_tools_linux_core2md_core2md_LDADD) $(LIBS)
src/common/dwarf_cfi_to_module.$(OBJEXT): src/common/$(am__dirstamp) \
src/common/$(DEPDIR)/$(am__dirstamp)
src/common/dwarf_cu_to_module.$(OBJEXT): src/common/$(am__dirstamp) \
@ -3021,11 +3085,14 @@ mostlyclean-compile:
-rm -f src/client/linux/crash_generation/crash_generation_client.$(OBJEXT)
-rm -f src/client/linux/handler/exception_handler.$(OBJEXT)
-rm -f src/client/linux/handler/src_client_linux_linux_client_unittest-exception_handler_unittest.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/linux_core_dumper.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/linux_dumper.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/linux_ptrace_dumper.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/minidump_writer.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-directory_reader_unittest.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-line_reader_unittest.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-minidump_writer_unittest.$(OBJEXT)
-rm -f src/client/linux/minidump_writer/src_client_linux_linux_dumper_unittest_helper-linux_dumper_unittest_helper.$(OBJEXT)
-rm -f src/client/minidump_file_writer.$(OBJEXT)
@ -3067,6 +3134,7 @@ mostlyclean-compile:
-rm -f src/common/linux/src_common_dumper_unittest-safe_readlink_unittest.$(OBJEXT)
-rm -f src/common/linux/src_common_dumper_unittest-synth_elf.$(OBJEXT)
-rm -f src/common/linux/src_common_dumper_unittest-synth_elf_unittest.$(OBJEXT)
-rm -f src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.$(OBJEXT)
-rm -f src/common/linux/tests/src_common_dumper_unittest-crash_generator.$(OBJEXT)
-rm -f src/common/md5.$(OBJEXT)
-rm -f src/common/module.$(OBJEXT)
@ -3097,6 +3165,7 @@ mostlyclean-compile:
-rm -f src/common/stabs_reader.$(OBJEXT)
-rm -f src/common/stabs_to_module.$(OBJEXT)
-rm -f src/common/string_conversion.$(OBJEXT)
-rm -f src/common/tests/src_client_linux_linux_client_unittest-file_utils.$(OBJEXT)
-rm -f src/common/tests/src_common_dumper_unittest-file_utils.$(OBJEXT)
-rm -f src/processor/address_map_unittest.$(OBJEXT)
-rm -f src/processor/basic_code_modules.$(OBJEXT)
@ -3222,6 +3291,7 @@ mostlyclean-compile:
-rm -f src/third_party/libdisasm/x86_insn.$(OBJEXT)
-rm -f src/third_party/libdisasm/x86_misc.$(OBJEXT)
-rm -f src/third_party/libdisasm/x86_operand_list.$(OBJEXT)
-rm -f src/tools/linux/core2md/core2md.$(OBJEXT)
-rm -f src/tools/linux/dump_syms/dump_syms.$(OBJEXT)
-rm -f src/tools/linux/md2core/minidump-2-core.$(OBJEXT)
-rm -f src/tools/linux/md2core/src_tools_linux_md2core_minidump_2_core_unittest-minidump_memory_range_unittest.$(OBJEXT)
@ -3235,11 +3305,14 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/crash_generation/$(DEPDIR)/crash_generation_client.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/handler/$(DEPDIR)/exception_handler.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/handler/$(DEPDIR)/src_client_linux_linux_client_unittest-exception_handler_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/linux_core_dumper.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/linux_dumper.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/linux_ptrace_dumper.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/minidump_writer.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-directory_reader_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-line_reader_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_dumper_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-minidump_writer_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_dumper_unittest_helper-linux_dumper_unittest_helper.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/$(DEPDIR)/convert_UTF.Po@am__quote@
@ -3309,7 +3382,9 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-safe_readlink_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-synth_elf.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-synth_elf_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-crash_generator.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/tests/$(DEPDIR)/src_common_dumper_unittest-crash_generator.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-file_utils.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/common/tests/$(DEPDIR)/src_common_dumper_unittest-file_utils.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/processor/$(DEPDIR)/address_map_unittest.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/processor/$(DEPDIR)/basic_code_modules.Po@am__quote@
@ -3435,6 +3510,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@src/third_party/libdisasm/$(DEPDIR)/x86_insn.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/third_party/libdisasm/$(DEPDIR)/x86_misc.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/third_party/libdisasm/$(DEPDIR)/x86_operand_list.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/tools/linux/core2md/$(DEPDIR)/core2md.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/tools/linux/dump_syms/$(DEPDIR)/dump_syms.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/tools/linux/md2core/$(DEPDIR)/minidump-2-core.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@src/tools/linux/md2core/$(DEPDIR)/src_tools_linux_md2core_minidump_2_core_unittest-minidump_memory_range_unittest.Po@am__quote@
@ -3515,19 +3591,33 @@ src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-line_rea
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-line_reader_unittest.obj `if test -f 'src/client/linux/minidump_writer/line_reader_unittest.cc'; then $(CYGPATH_W) 'src/client/linux/minidump_writer/line_reader_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/client/linux/minidump_writer/line_reader_unittest.cc'; fi`
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.o: src/client/linux/minidump_writer/linux_dumper_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.o -MD -MP -MF src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_dumper_unittest.Tpo -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.o `test -f 'src/client/linux/minidump_writer/linux_dumper_unittest.cc' || echo '$(srcdir)/'`src/client/linux/minidump_writer/linux_dumper_unittest.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_dumper_unittest.Tpo src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_dumper_unittest.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/client/linux/minidump_writer/linux_dumper_unittest.cc' object='src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.o' libtool=no @AMDEPBACKSLASH@
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.o: src/client/linux/minidump_writer/linux_core_dumper_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.o -MD -MP -MF src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.Tpo -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.o `test -f 'src/client/linux/minidump_writer/linux_core_dumper_unittest.cc' || echo '$(srcdir)/'`src/client/linux/minidump_writer/linux_core_dumper_unittest.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.Tpo src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/client/linux/minidump_writer/linux_core_dumper_unittest.cc' object='src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.o' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.o `test -f 'src/client/linux/minidump_writer/linux_dumper_unittest.cc' || echo '$(srcdir)/'`src/client/linux/minidump_writer/linux_dumper_unittest.cc
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.o `test -f 'src/client/linux/minidump_writer/linux_core_dumper_unittest.cc' || echo '$(srcdir)/'`src/client/linux/minidump_writer/linux_core_dumper_unittest.cc
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.obj: src/client/linux/minidump_writer/linux_dumper_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.obj -MD -MP -MF src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_dumper_unittest.Tpo -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.obj `if test -f 'src/client/linux/minidump_writer/linux_dumper_unittest.cc'; then $(CYGPATH_W) 'src/client/linux/minidump_writer/linux_dumper_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/client/linux/minidump_writer/linux_dumper_unittest.cc'; fi`
@am__fastdepCXX_TRUE@ $(am__mv) src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_dumper_unittest.Tpo src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_dumper_unittest.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/client/linux/minidump_writer/linux_dumper_unittest.cc' object='src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.obj' libtool=no @AMDEPBACKSLASH@
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.obj: src/client/linux/minidump_writer/linux_core_dumper_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.obj -MD -MP -MF src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.Tpo -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.obj `if test -f 'src/client/linux/minidump_writer/linux_core_dumper_unittest.cc'; then $(CYGPATH_W) 'src/client/linux/minidump_writer/linux_core_dumper_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/client/linux/minidump_writer/linux_core_dumper_unittest.cc'; fi`
@am__fastdepCXX_TRUE@ $(am__mv) src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.Tpo src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/client/linux/minidump_writer/linux_core_dumper_unittest.cc' object='src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.obj' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_dumper_unittest.obj `if test -f 'src/client/linux/minidump_writer/linux_dumper_unittest.cc'; then $(CYGPATH_W) 'src/client/linux/minidump_writer/linux_dumper_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/client/linux/minidump_writer/linux_dumper_unittest.cc'; fi`
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_core_dumper_unittest.obj `if test -f 'src/client/linux/minidump_writer/linux_core_dumper_unittest.cc'; then $(CYGPATH_W) 'src/client/linux/minidump_writer/linux_core_dumper_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/client/linux/minidump_writer/linux_core_dumper_unittest.cc'; fi`
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.o: src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.o -MD -MP -MF src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.Tpo -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.o `test -f 'src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc' || echo '$(srcdir)/'`src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.Tpo src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc' object='src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.o' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.o `test -f 'src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc' || echo '$(srcdir)/'`src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.obj: src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.obj -MD -MP -MF src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.Tpo -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.obj `if test -f 'src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc'; then $(CYGPATH_W) 'src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc'; fi`
@am__fastdepCXX_TRUE@ $(am__mv) src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.Tpo src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc' object='src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.obj' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-linux_ptrace_dumper_unittest.obj `if test -f 'src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc'; then $(CYGPATH_W) 'src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc'; fi`
src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-minidump_writer_unittest.o: src/client/linux/minidump_writer/minidump_writer_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-minidump_writer_unittest.o -MD -MP -MF src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_client_unittest-minidump_writer_unittest.Tpo -c -o src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-minidump_writer_unittest.o `test -f 'src/client/linux/minidump_writer/minidump_writer_unittest.cc' || echo '$(srcdir)/'`src/client/linux/minidump_writer/minidump_writer_unittest.cc
@ -3557,6 +3647,20 @@ src/common/linux/src_client_linux_linux_client_unittest-linux_libc_support_unitt
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/linux/src_client_linux_linux_client_unittest-linux_libc_support_unittest.obj `if test -f 'src/common/linux/linux_libc_support_unittest.cc'; then $(CYGPATH_W) 'src/common/linux/linux_libc_support_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/linux_libc_support_unittest.cc'; fi`
src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.o: src/common/linux/tests/crash_generator.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.o -MD -MP -MF src/common/linux/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-crash_generator.Tpo -c -o src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.o `test -f 'src/common/linux/tests/crash_generator.cc' || echo '$(srcdir)/'`src/common/linux/tests/crash_generator.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/common/linux/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-crash_generator.Tpo src/common/linux/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-crash_generator.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/common/linux/tests/crash_generator.cc' object='src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.o' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.o `test -f 'src/common/linux/tests/crash_generator.cc' || echo '$(srcdir)/'`src/common/linux/tests/crash_generator.cc
src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.obj: src/common/linux/tests/crash_generator.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.obj -MD -MP -MF src/common/linux/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-crash_generator.Tpo -c -o src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.obj `if test -f 'src/common/linux/tests/crash_generator.cc'; then $(CYGPATH_W) 'src/common/linux/tests/crash_generator.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/tests/crash_generator.cc'; fi`
@am__fastdepCXX_TRUE@ $(am__mv) src/common/linux/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-crash_generator.Tpo src/common/linux/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-crash_generator.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/common/linux/tests/crash_generator.cc' object='src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.obj' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/linux/tests/src_client_linux_linux_client_unittest-crash_generator.obj `if test -f 'src/common/linux/tests/crash_generator.cc'; then $(CYGPATH_W) 'src/common/linux/tests/crash_generator.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/tests/crash_generator.cc'; fi`
src/common/src_client_linux_linux_client_unittest-memory_unittest.o: src/common/memory_unittest.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/src_client_linux_linux_client_unittest-memory_unittest.o -MD -MP -MF src/common/$(DEPDIR)/src_client_linux_linux_client_unittest-memory_unittest.Tpo -c -o src/common/src_client_linux_linux_client_unittest-memory_unittest.o `test -f 'src/common/memory_unittest.cc' || echo '$(srcdir)/'`src/common/memory_unittest.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/common/$(DEPDIR)/src_client_linux_linux_client_unittest-memory_unittest.Tpo src/common/$(DEPDIR)/src_client_linux_linux_client_unittest-memory_unittest.Po
@ -3571,6 +3675,20 @@ src/common/src_client_linux_linux_client_unittest-memory_unittest.obj: src/commo
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/src_client_linux_linux_client_unittest-memory_unittest.obj `if test -f 'src/common/memory_unittest.cc'; then $(CYGPATH_W) 'src/common/memory_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/memory_unittest.cc'; fi`
src/common/tests/src_client_linux_linux_client_unittest-file_utils.o: src/common/tests/file_utils.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/tests/src_client_linux_linux_client_unittest-file_utils.o -MD -MP -MF src/common/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-file_utils.Tpo -c -o src/common/tests/src_client_linux_linux_client_unittest-file_utils.o `test -f 'src/common/tests/file_utils.cc' || echo '$(srcdir)/'`src/common/tests/file_utils.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/common/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-file_utils.Tpo src/common/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-file_utils.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/common/tests/file_utils.cc' object='src/common/tests/src_client_linux_linux_client_unittest-file_utils.o' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/tests/src_client_linux_linux_client_unittest-file_utils.o `test -f 'src/common/tests/file_utils.cc' || echo '$(srcdir)/'`src/common/tests/file_utils.cc
src/common/tests/src_client_linux_linux_client_unittest-file_utils.obj: src/common/tests/file_utils.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/tests/src_client_linux_linux_client_unittest-file_utils.obj -MD -MP -MF src/common/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-file_utils.Tpo -c -o src/common/tests/src_client_linux_linux_client_unittest-file_utils.obj `if test -f 'src/common/tests/file_utils.cc'; then $(CYGPATH_W) 'src/common/tests/file_utils.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/tests/file_utils.cc'; fi`
@am__fastdepCXX_TRUE@ $(am__mv) src/common/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-file_utils.Tpo src/common/tests/$(DEPDIR)/src_client_linux_linux_client_unittest-file_utils.Po
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ source='src/common/tests/file_utils.cc' object='src/common/tests/src_client_linux_linux_client_unittest-file_utils.obj' libtool=no @AMDEPBACKSLASH@
@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
@am__fastdepCXX_FALSE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/tests/src_client_linux_linux_client_unittest-file_utils.obj `if test -f 'src/common/tests/file_utils.cc'; then $(CYGPATH_W) 'src/common/tests/file_utils.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/tests/file_utils.cc'; fi`
src/testing/gtest/src/src_client_linux_linux_client_unittest-gtest-all.o: src/testing/gtest/src/gtest-all.cc
@am__fastdepCXX_TRUE@ $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/testing/gtest/src/src_client_linux_linux_client_unittest-gtest-all.o -MD -MP -MF src/testing/gtest/src/$(DEPDIR)/src_client_linux_linux_client_unittest-gtest-all.Tpo -c -o src/testing/gtest/src/src_client_linux_linux_client_unittest-gtest-all.o `test -f 'src/testing/gtest/src/gtest-all.cc' || echo '$(srcdir)/'`src/testing/gtest/src/gtest-all.cc
@am__fastdepCXX_TRUE@ $(am__mv) src/testing/gtest/src/$(DEPDIR)/src_client_linux_linux_client_unittest-gtest-all.Tpo src/testing/gtest/src/$(DEPDIR)/src_client_linux_linux_client_unittest-gtest-all.Po
@ -5690,6 +5808,8 @@ distclean-generic:
-rm -f src/testing/src/$(am__dirstamp)
-rm -f src/third_party/libdisasm/$(DEPDIR)/$(am__dirstamp)
-rm -f src/third_party/libdisasm/$(am__dirstamp)
-rm -f src/tools/linux/core2md/$(DEPDIR)/$(am__dirstamp)
-rm -f src/tools/linux/core2md/$(am__dirstamp)
-rm -f src/tools/linux/dump_syms/$(DEPDIR)/$(am__dirstamp)
-rm -f src/tools/linux/dump_syms/$(am__dirstamp)
-rm -f src/tools/linux/md2core/$(DEPDIR)/$(am__dirstamp)
@ -5708,7 +5828,7 @@ clean-am: clean-binPROGRAMS clean-checkPROGRAMS clean-generic \
distclean: distclean-am
-rm -f $(am__CONFIG_DISTCLEAN_FILES)
-rm -rf src/client/$(DEPDIR) src/client/linux/crash_generation/$(DEPDIR) src/client/linux/handler/$(DEPDIR) src/client/linux/minidump_writer/$(DEPDIR) src/common/$(DEPDIR) src/common/dwarf/$(DEPDIR) src/common/linux/$(DEPDIR) src/common/linux/tests/$(DEPDIR) src/common/tests/$(DEPDIR) src/processor/$(DEPDIR) src/testing/gtest/src/$(DEPDIR) src/testing/src/$(DEPDIR) src/third_party/libdisasm/$(DEPDIR) src/tools/linux/dump_syms/$(DEPDIR) src/tools/linux/md2core/$(DEPDIR) src/tools/linux/symupload/$(DEPDIR)
-rm -rf src/client/$(DEPDIR) src/client/linux/crash_generation/$(DEPDIR) src/client/linux/handler/$(DEPDIR) src/client/linux/minidump_writer/$(DEPDIR) src/common/$(DEPDIR) src/common/dwarf/$(DEPDIR) src/common/linux/$(DEPDIR) src/common/linux/tests/$(DEPDIR) src/common/tests/$(DEPDIR) src/processor/$(DEPDIR) src/testing/gtest/src/$(DEPDIR) src/testing/src/$(DEPDIR) src/third_party/libdisasm/$(DEPDIR) src/tools/linux/core2md/$(DEPDIR) src/tools/linux/dump_syms/$(DEPDIR) src/tools/linux/md2core/$(DEPDIR) src/tools/linux/symupload/$(DEPDIR)
-rm -f Makefile
distclean-am: clean-am distclean-compile distclean-generic \
distclean-hdr distclean-tags
@ -5756,7 +5876,7 @@ installcheck-am:
maintainer-clean: maintainer-clean-am
-rm -f $(am__CONFIG_DISTCLEAN_FILES)
-rm -rf $(top_srcdir)/autom4te.cache
-rm -rf src/client/$(DEPDIR) src/client/linux/crash_generation/$(DEPDIR) src/client/linux/handler/$(DEPDIR) src/client/linux/minidump_writer/$(DEPDIR) src/common/$(DEPDIR) src/common/dwarf/$(DEPDIR) src/common/linux/$(DEPDIR) src/common/linux/tests/$(DEPDIR) src/common/tests/$(DEPDIR) src/processor/$(DEPDIR) src/testing/gtest/src/$(DEPDIR) src/testing/src/$(DEPDIR) src/third_party/libdisasm/$(DEPDIR) src/tools/linux/dump_syms/$(DEPDIR) src/tools/linux/md2core/$(DEPDIR) src/tools/linux/symupload/$(DEPDIR)
-rm -rf src/client/$(DEPDIR) src/client/linux/crash_generation/$(DEPDIR) src/client/linux/handler/$(DEPDIR) src/client/linux/minidump_writer/$(DEPDIR) src/common/$(DEPDIR) src/common/dwarf/$(DEPDIR) src/common/linux/$(DEPDIR) src/common/linux/tests/$(DEPDIR) src/common/tests/$(DEPDIR) src/processor/$(DEPDIR) src/testing/gtest/src/$(DEPDIR) src/testing/src/$(DEPDIR) src/third_party/libdisasm/$(DEPDIR) src/tools/linux/core2md/$(DEPDIR) src/tools/linux/dump_syms/$(DEPDIR) src/tools/linux/md2core/$(DEPDIR) src/tools/linux/symupload/$(DEPDIR)
-rm -f Makefile
maintainer-clean-am: distclean-am maintainer-clean-generic

234
src/client/linux/minidump_writer/linux_core_dumper.cc Normal file
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@ -0,0 +1,234 @@
// Copyright (c) 2012, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// linux_core_dumper.cc: Implement google_breakpad::LinuxCoreDumper.
// See linux_core_dumper.h for details.
#include "client/linux/minidump_writer/linux_core_dumper.h"
#include <asm/ptrace.h>
#include <assert.h>
#include <elf.h>
#include <stdio.h>
#include <string.h>
#include <sys/procfs.h>
#include "common/linux/linux_libc_support.h"
namespace google_breakpad {
LinuxCoreDumper::LinuxCoreDumper(pid_t pid,
const char* core_path,
const char* procfs_path)
: LinuxDumper(pid),
core_path_(core_path),
procfs_path_(procfs_path),
thread_infos_(&allocator_, 8) {
assert(core_path_);
}
bool LinuxCoreDumper::BuildProcPath(char* path, pid_t pid,
const char* node) const {
if (!path || !node)
return false;
size_t node_len = my_strlen(node);
if (node_len == 0)
return false;
size_t procfs_path_len = my_strlen(procfs_path_);
size_t total_length = procfs_path_len + 1 + node_len;
if (total_length >= NAME_MAX)
return false;
memcpy(path, procfs_path_, procfs_path_len);
path[procfs_path_len] = '/';
memcpy(path + procfs_path_len + 1, node, node_len);
path[total_length] = '\0';
return true;
}
void LinuxCoreDumper::CopyFromProcess(void* dest, pid_t child,
const void* src, size_t length) {
ElfCoreDump::Addr virtual_address = reinterpret_cast<ElfCoreDump::Addr>(src);
// TODO(benchan): Investigate whether the data to be copied could span
// across multiple segments in the core dump file. ElfCoreDump::CopyData
// and this method do not handle that case yet.
if (!core_.CopyData(dest, virtual_address, length)) {
// If the data segment is not found in the core dump, fill the result
// with marker characters.
memset(dest, 0xab, length);
}
}
bool LinuxCoreDumper::GetThreadInfoByIndex(size_t index, ThreadInfo* info) {
if (index >= thread_infos_.size())
return false;
*info = thread_infos_[index];
const uint8_t* stack_pointer;
#if defined(__i386)
memcpy(&stack_pointer, &info->regs.esp, sizeof(info->regs.esp));
#elif defined(__x86_64)
memcpy(&stack_pointer, &info->regs.rsp, sizeof(info->regs.rsp));
#elif defined(__ARM_EABI__)
memcpy(&stack_pointer, &info->regs.ARM_sp, sizeof(info->regs.ARM_sp));
#else
#error "This code hasn't been ported to your platform yet."
#endif
return GetStackInfo(&info->stack, &info->stack_len,
reinterpret_cast<uintptr_t>(stack_pointer));
}
bool LinuxCoreDumper::IsPostMortem() const {
return true;
}
bool LinuxCoreDumper::ThreadsSuspend() {
return true;
}
bool LinuxCoreDumper::ThreadsResume() {
return true;
}
bool LinuxCoreDumper::EnumerateThreads() {
if (!mapped_core_file_.Map(core_path_)) {
fprintf(stderr, "Could not map core dump file into memory\n");
return false;
}
core_.SetContent(mapped_core_file_.content());
if (!core_.IsValid()) {
fprintf(stderr, "Invalid core dump file\n");
return false;
}
ElfCoreDump::Note note = core_.GetFirstNote();
if (!note.IsValid()) {
fprintf(stderr, "PT_NOTE section not found\n");
return false;
}
bool first_thread = true;
do {
ElfCoreDump::Word type = note.GetType();
MemoryRange name = note.GetName();
MemoryRange description = note.GetDescription();
if (type == 0 || name.IsEmpty() || description.IsEmpty()) {
fprintf(stderr, "Could not found a valid PT_NOTE.\n");
return false;
}
// Based on write_note_info() in linux/kernel/fs/binfmt_elf.c, notes are
// ordered as follows (NT_PRXFPREG and NT_386_TLS are i386 specific):
// Thread Name Type
// -------------------------------------------------------------------
// 1st thread CORE NT_PRSTATUS
// process-wide CORE NT_PRPSINFO
// process-wide CORE NT_AUXV
// 1st thread CORE NT_FPREGSET
// 1st thread LINUX NT_PRXFPREG
// 1st thread LINUX NT_386_TLS
//
// 2nd thread CORE NT_PRSTATUS
// 2nd thread CORE NT_FPREGSET
// 2nd thread LINUX NT_PRXFPREG
// 2nd thread LINUX NT_386_TLS
//
// 3rd thread CORE NT_PRSTATUS
// 3rd thread CORE NT_FPREGSET
// 3rd thread LINUX NT_PRXFPREG
// 3rd thread LINUX NT_386_TLS
//
// The following code only works if notes are ordered as expected.
switch (type) {
case NT_PRSTATUS: {
if (description.length() != sizeof(elf_prstatus)) {
fprintf(stderr, "Found NT_PRSTATUS descriptor of unexpected size\n");
return false;
}
const elf_prstatus* status =
reinterpret_cast<const elf_prstatus*>(description.data());
pid_t pid = status->pr_pid;
ThreadInfo info;
memset(&info, 0, sizeof(ThreadInfo));
info.tgid = status->pr_pgrp;
info.ppid = status->pr_ppid;
memcpy(&info.regs, status->pr_reg, sizeof(info.regs));
if (first_thread) {
crash_thread_ = pid;
crash_signal_ = status->pr_info.si_signo;
}
first_thread = false;
threads_.push_back(pid);
thread_infos_.push_back(info);
break;
}
#if defined(__i386) || defined(__x86_64)
case NT_FPREGSET: {
if (thread_infos_.empty())
return false;
ThreadInfo* info = &thread_infos_.back();
if (description.length() != sizeof(info->fpregs)) {
fprintf(stderr, "Found NT_FPREGSET descriptor of unexpected size\n");
return false;
}
memcpy(&info->fpregs, description.data(), sizeof(info->fpregs));
break;
}
#endif
#if defined(__i386)
case NT_PRXFPREG: {
if (thread_infos_.empty())
return false;
ThreadInfo* info = &thread_infos_.back();
if (description.length() != sizeof(info->fpxregs)) {
fprintf(stderr, "Found NT_PRXFPREG descriptor of unexpected size\n");
return false;
}
memcpy(&info->fpxregs, description.data(), sizeof(info->fpxregs));
break;
}
#endif
}
note = note.GetNextNote();
} while (note.IsValid());
return true;
}
} // namespace google_breakpad

122
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@ -0,0 +1,122 @@
// Copyright (c) 2012, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// linux_core_dumper.h: Define the google_breakpad::LinuxCoreDumper
// class, which is derived from google_breakpad::LinuxDumper to extract
// information from a crashed process via its core dump and proc files.
#ifndef CLIENT_LINUX_MINIDUMP_WRITER_LINUX_CORE_DUMPER_H_
#define CLIENT_LINUX_MINIDUMP_WRITER_LINUX_CORE_DUMPER_H_
#include "client/linux/minidump_writer/linux_dumper.h"
#include "common/linux/elf_core_dump.h"
#include "common/linux/memory_mapped_file.h"
namespace google_breakpad {
class LinuxCoreDumper : public LinuxDumper {
public:
// Constructs a dumper for extracting information of a given process
// with a process ID of |pid| via its core dump file at |core_path| and
// its proc files at |procfs_path|. If |procfs_path| is a copy of
// /proc/<pid>, it should contain the following files:
// auxv, cmdline, environ, exe, maps, status
LinuxCoreDumper(pid_t pid, const char* core_path, const char* procfs_path);
// Implements LinuxDumper::BuildProcPath().
// Builds a proc path for a certain pid for a node (/proc/<pid>/<node>).
// |path| is a character array of at least NAME_MAX bytes to return the
// result.|node| is the final node without any slashes. Return true on
// success.
//
// As this dumper performs a post-mortem dump and makes use of a copy
// of the proc files of the crashed process, this derived method does
// not actually make use of |pid| and always returns a subpath of
// |procfs_path_| regardless of whether |pid| corresponds to the main
// process or a thread of the process, i.e. assuming both the main process
// and its threads have the following proc files with the same content:
// auxv, cmdline, environ, exe, maps, status
virtual bool BuildProcPath(char* path, pid_t pid, const char* node) const;
// Implements LinuxDumper::CopyFromProcess().
// Copies content of |length| bytes from a given process |child|,
// starting from |src|, into |dest|. This method extracts the content
// the core dump and fills |dest| with a sequence of marker bytes
// if the expected data is not found in the core dump.
virtual void CopyFromProcess(void* dest, pid_t child, const void* src,
size_t length);
// Implements LinuxDumper::GetThreadInfoByIndex().
// Reads information about the |index|-th thread of |threads_|.
// Returns true on success. One must have called |ThreadsSuspend| first.
virtual bool GetThreadInfoByIndex(size_t index, ThreadInfo* info);
// Implements LinuxDumper::IsPostMortem().
// Always returns true to indicate that this dumper performs a
// post-mortem dump of a crashed process via a core dump file.
virtual bool IsPostMortem() const;
// Implements LinuxDumper::ThreadsSuspend().
// As the dumper performs a post-mortem dump via a core dump file,
// there is no threads to suspend. This method does nothing and
// always returns true.
virtual bool ThreadsSuspend();
// Implements LinuxDumper::ThreadsResume().
// As the dumper performs a post-mortem dump via a core dump file,
// there is no threads to resume. This method does nothing and
// always returns true.
virtual bool ThreadsResume();
protected:
// Implements LinuxDumper::EnumerateThreads().
// Enumerates all threads of the given process into |threads_|.
virtual bool EnumerateThreads();
private:
// Path of the core dump file.
const char* core_path_;
// Path of the directory containing the proc files of the given process,
// which is usually a copy of /proc/<pid>.
const char* procfs_path_;
// Memory-mapped core dump file at |core_path_|.
MemoryMappedFile mapped_core_file_;
// Content of the core dump file.
ElfCoreDump core_;
// Thread info found in the core dump file.
wasteful_vector<ThreadInfo> thread_infos_;
};
} // namespace google_breakpad
#endif // CLIENT_LINUX_HANDLER_LINUX_CORE_DUMPER_H_

117
src/client/linux/minidump_writer/linux_core_dumper_unittest.cc Normal file
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@ -0,0 +1,117 @@
// Copyright (c) 2012, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// linux_core_dumper_unittest.cc:
// Unit tests for google_breakpad::LinuxCoreDumoer.
#include "breakpad_googletest_includes.h"
#include "client/linux/minidump_writer/linux_core_dumper.h"
#include "common/linux/tests/crash_generator.h"
using std::string;
using namespace google_breakpad;
TEST(LinuxCoreDumperTest, BuildProcPath) {
const pid_t pid = getpid();
const char procfs_path[] = "/procfs_copy";
LinuxCoreDumper dumper(getpid(), "core_file", procfs_path);
char maps_path[NAME_MAX] = "";
char maps_path_expected[NAME_MAX];
snprintf(maps_path_expected, sizeof(maps_path_expected),
"%s/maps", procfs_path);
EXPECT_TRUE(dumper.BuildProcPath(maps_path, pid, "maps"));
EXPECT_STREQ(maps_path_expected, maps_path);
EXPECT_FALSE(dumper.BuildProcPath(NULL, pid, "maps"));
EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, ""));
EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, NULL));
char long_node[NAME_MAX];
size_t long_node_len = NAME_MAX - strlen(procfs_path) - 1;
memset(long_node, 'a', long_node_len);
long_node[long_node_len] = '\0';
EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, long_node));
}
TEST(LinuxCoreDumperTest, VerifyDumpWithMultipleThreads) {
CrashGenerator crash_generator;
if (!crash_generator.HasDefaultCorePattern()) {
fprintf(stderr, "LinuxCoreDumperTest.VerifyDumpWithMultipleThreads test"
"is skipped due to non-default core pattern\n");
return;
}
const unsigned kNumOfThreads = 3;
const unsigned kCrashThread = 1;
const int kCrashSignal = SIGABRT;
pid_t child_pid;
// TODO(benchan): Revert to use ASSERT_TRUE once the flakiness in
// CrashGenerator is identified and fixed.
if (!crash_generator.CreateChildCrash(kNumOfThreads, kCrashThread,
kCrashSignal, &child_pid)) {
fprintf(stderr, "LinuxCoreDumperTest.VerifyDumpWithMultipleThreads test"
"is skipped due to no core dump generated\n");
return;
}
pid_t pid = getpid();
const char* core_file = crash_generator.GetCoreFilePath().c_str();
// Since CrashGenerator::CreateChildCrash() simply crashed a fork of
// this process, we expect that those proc files, which are used by
// LinuxCoreDumper, of crashed child process have the same content of
// this process. So we simply pass the proc files of this process to
// LinuxCoreDumper.
char procfs_path[NAME_MAX];
snprintf(procfs_path, NAME_MAX, "/proc/%d", pid);
LinuxCoreDumper dumper(child_pid, core_file, procfs_path);
dumper.Init();
EXPECT_TRUE(dumper.IsPostMortem());
// These are no-ops and should always return true.
EXPECT_TRUE(dumper.ThreadsSuspend());
EXPECT_TRUE(dumper.ThreadsResume());
// LinuxCoreDumper cannot determine the crash address and thus it always
// sets the crash address to 0.
EXPECT_EQ(0, dumper.crash_address());
EXPECT_EQ(kCrashSignal, dumper.crash_signal());
EXPECT_EQ(crash_generator.GetThreadId(kCrashThread),
dumper.crash_thread());
EXPECT_EQ(kNumOfThreads, dumper.threads().size());
for (unsigned i = 0; i < kNumOfThreads; ++i) {
ThreadInfo info;
EXPECT_TRUE(dumper.GetThreadInfoByIndex(i, &info));
EXPECT_EQ(getpid(), info.ppid);
}
}

275
src/client/linux/minidump_writer/linux_dumper.cc
View file

@ -27,6 +27,9 @@
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// linux_dumper.cc: Implement google_breakpad::LinuxDumper.
// See linux_dumper.h for details.
// This code deals with the mechanics of getting information about a crashed
// process. Since this code may run in a compromised address space, the same
// rules apply as detailed at the top of minidump_writer.h: no libc calls and
@ -34,25 +37,12 @@
#include "client/linux/minidump_writer/linux_dumper.h"
#include <asm/ptrace.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#if !defined(__ANDROID__)
#include <link.h>
#endif
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
#include <unistd.h>
#include <algorithm>
#include "client/linux/minidump_writer/directory_reader.h"
#include "client/linux/minidump_writer/line_reader.h"
#include "common/linux/file_id.h"
#include "common/linux/linux_libc_support.h"
@ -63,48 +53,6 @@
static const char kMappedFileUnsafePrefix[] = "/dev/";
static const char kDeletedSuffix[] = " (deleted)";
// Suspend a thread by attaching to it.
static bool SuspendThread(pid_t pid) {
// This may fail if the thread has just died or debugged.
errno = 0;
if (sys_ptrace(PTRACE_ATTACH, pid, NULL, NULL) != 0 &&
errno != 0) {
return false;
}
while (sys_waitpid(pid, NULL, __WALL) < 0) {
if (errno != EINTR) {
sys_ptrace(PTRACE_DETACH, pid, NULL, NULL);
return false;
}
}
#if defined(__i386) || defined(__x86_64)
// On x86, the stack pointer is NULL or -1, when executing trusted code in
// the seccomp sandbox. Not only does this cause difficulties down the line
// when trying to dump the thread's stack, it also results in the minidumps
// containing information about the trusted threads. This information is
// generally completely meaningless and just pollutes the minidumps.
// We thus test the stack pointer and exclude any threads that are part of
// the seccomp sandbox's trusted code.
user_regs_struct regs;
if (sys_ptrace(PTRACE_GETREGS, pid, NULL, &regs) == -1 ||
#if defined(__i386)
!regs.esp
#elif defined(__x86_64)
!regs.rsp
#endif
) {
sys_ptrace(PTRACE_DETACH, pid, NULL, NULL);
return false;
}
#endif
return true;
}
// Resume a thread by detaching from it.
static bool ResumeThread(pid_t pid) {
return sys_ptrace(PTRACE_DETACH, pid, NULL, NULL) >= 0;
}
inline static bool IsMappedFileOpenUnsafe(
const google_breakpad::MappingInfo& mapping) {
// It is unsafe to attempt to open a mapped file that lives under /dev,
@ -123,7 +71,6 @@ LinuxDumper::LinuxDumper(pid_t pid)
crash_address_(0),
crash_signal_(0),
crash_thread_(0),
threads_suspended_(false),
threads_(&allocator_, 8),
mappings_(&allocator_) {
}
@ -135,80 +82,6 @@ bool LinuxDumper::Init() {
return EnumerateThreads() && EnumerateMappings();
}
bool LinuxDumper::ThreadsSuspend() {
if (threads_suspended_)
return true;
for (size_t i = 0; i < threads_.size(); ++i) {
if (!SuspendThread(threads_[i])) {
// If the thread either disappeared before we could attach to it, or if
// it was part of the seccomp sandbox's trusted code, it is OK to
// silently drop it from the minidump.
memmove(&threads_[i], &threads_[i+1],
(threads_.size() - i - 1) * sizeof(threads_[i]));
threads_.resize(threads_.size() - 1);
--i;
}
}
threads_suspended_ = true;
return threads_.size() > 0;
}
bool LinuxDumper::ThreadsResume() {
if (!threads_suspended_)
return false;
bool good = true;
for (size_t i = 0; i < threads_.size(); ++i)
good &= ResumeThread(threads_[i]);
threads_suspended_ = false;
return good;
}
void
LinuxDumper::BuildProcPath(char* path, pid_t pid, const char* node) const {
assert(path);
if (!path) {
return;
}
path[0] = '\0';
const unsigned pid_len = my_int_len(pid);
assert(node);
if (!node) {
return;
}
size_t node_len = my_strlen(node);
assert(node_len < NAME_MAX);
if (node_len >= NAME_MAX) {
return;
}
assert(node_len > 0);
if (node_len == 0) {
return;
}
assert(pid > 0);
if (pid <= 0) {
return;
}
const size_t total_length = 6 + pid_len + 1 + node_len;
assert(total_length < NAME_MAX);
if (total_length >= NAME_MAX) {
return;
}
memcpy(path, "/proc/", 6);
my_itos(path + 6, pid, pid_len);
memcpy(path + 6 + pid_len, "/", 1);
memcpy(path + 6 + pid_len + 1, node, node_len);
path[total_length] = '\0';
}
bool
LinuxDumper::ElfFileIdentifierForMapping(const MappingInfo& mapping,
bool member,
@ -261,10 +134,8 @@ LinuxDumper::ElfFileIdentifierForMapping(const MappingInfo& mapping,
void*
LinuxDumper::FindBeginningOfLinuxGateSharedLibrary(const pid_t pid) const {
char auxv_path[NAME_MAX];
BuildProcPath(auxv_path, pid, "auxv");
// If BuildProcPath errors out due to invalid input, we'll handle it when
// we try to sys_open the file.
if (!BuildProcPath(auxv_path, pid, "auxv"))
return NULL;
// Find the AT_SYSINFO_EHDR entry for linux-gate.so
// See http://www.trilithium.com/johan/2005/08/linux-gate/ for more
@ -290,7 +161,8 @@ LinuxDumper::FindBeginningOfLinuxGateSharedLibrary(const pid_t pid) const {
bool LinuxDumper::EnumerateMappings() {
char maps_path[NAME_MAX];
BuildProcPath(maps_path, pid_, "maps");
if (!BuildProcPath(maps_path, pid_, "maps"))
return false;
// linux_gate_loc is the beginning of the kernel's mapping of
// linux-gate.so in the process. It doesn't actually show up in the
@ -359,118 +231,6 @@ bool LinuxDumper::EnumerateMappings() {
return !mappings_.empty();
}
// Parse /proc/$pid/task to list all the threads of the process identified by
// pid.
bool LinuxDumper::EnumerateThreads() {
char task_path[NAME_MAX];
BuildProcPath(task_path, pid_, "task");
const int fd = sys_open(task_path, O_RDONLY | O_DIRECTORY, 0);
if (fd < 0)
return false;
DirectoryReader* dir_reader = new(allocator_) DirectoryReader(fd);
// The directory may contain duplicate entries which we filter by assuming
// that they are consecutive.
int last_tid = -1;
const char* dent_name;
while (dir_reader->GetNextEntry(&dent_name)) {
if (my_strcmp(dent_name, ".") &&
my_strcmp(dent_name, "..")) {
int tid = 0;
if (my_strtoui(&tid, dent_name) &&
last_tid != tid) {
last_tid = tid;
threads_.push_back(tid);
}
}
dir_reader->PopEntry();
}
sys_close(fd);
return true;
}
// Read thread info from /proc/$pid/status.
// Fill out the |tgid|, |ppid| and |pid| members of |info|. If unavailable,
// these members are set to -1. Returns true iff all three members are
// available.
bool LinuxDumper::GetThreadInfoByIndex(size_t index, ThreadInfo* info) {
if (index >= threads_.size())
return false;
pid_t tid = threads_[index];
assert(info != NULL);
char status_path[NAME_MAX];
BuildProcPath(status_path, tid, "status");
const int fd = sys_open(status_path, O_RDONLY, 0);
if (fd < 0)
return false;
LineReader* const line_reader = new(allocator_) LineReader(fd);
const char* line;
unsigned line_len;
info->ppid = info->tgid = -1;
while (line_reader->GetNextLine(&line, &line_len)) {
if (my_strncmp("Tgid:\t", line, 6) == 0) {
my_strtoui(&info->tgid, line + 6);
} else if (my_strncmp("PPid:\t", line, 6) == 0) {
my_strtoui(&info->ppid, line + 6);
}
line_reader->PopLine(line_len);
}
if (info->ppid == -1 || info->tgid == -1)
return false;
if (sys_ptrace(PTRACE_GETREGS, tid, NULL, &info->regs) == -1) {
return false;
}
#if !defined(__ANDROID__)
if (sys_ptrace(PTRACE_GETFPREGS, tid, NULL, &info->fpregs) == -1) {
return false;
}
#endif
#if defined(__i386)
if (sys_ptrace(PTRACE_GETFPXREGS, tid, NULL, &info->fpxregs) == -1)
return false;
#endif
#if defined(__i386) || defined(__x86_64)
for (unsigned i = 0; i < ThreadInfo::kNumDebugRegisters; ++i) {
if (sys_ptrace(
PTRACE_PEEKUSER, tid,
reinterpret_cast<void*> (offsetof(struct user,
u_debugreg[0]) + i *
sizeof(debugreg_t)),
&info->dregs[i]) == -1) {
return false;
}
}
#endif
const uint8_t* stack_pointer;
#if defined(__i386)
memcpy(&stack_pointer, &info->regs.esp, sizeof(info->regs.esp));
#elif defined(__x86_64)
memcpy(&stack_pointer, &info->regs.rsp, sizeof(info->regs.rsp));
#elif defined(__ARM_EABI__)
memcpy(&stack_pointer, &info->regs.ARM_sp, sizeof(info->regs.ARM_sp));
#else
#error "This code hasn't been ported to your platform yet."
#endif
return GetStackInfo(&info->stack, &info->stack_len,
(uintptr_t) stack_pointer);
}
// Get information about the stack, given the stack pointer. We don't try to
// walk the stack since we might not have all the information needed to do
// unwind. So we just grab, up to, 32k of stack.
@ -497,24 +257,6 @@ bool LinuxDumper::GetStackInfo(const void** stack, size_t* stack_len,
return true;
}
void LinuxDumper::CopyFromProcess(void* dest, pid_t child, const void* src,
size_t length) {
unsigned long tmp = 55;
size_t done = 0;
static const size_t word_size = sizeof(tmp);
uint8_t* const local = (uint8_t*) dest;
uint8_t* const remote = (uint8_t*) src;
while (done < length) {
const size_t l = length - done > word_size ? word_size : length - done;
if (sys_ptrace(PTRACE_PEEKDATA, child, remote + done, &tmp) == -1) {
tmp = 0;
}
memcpy(local + done, &tmp, l);
done += l;
}
}
// Find the mapping which the given memory address falls in.
const MappingInfo* LinuxDumper::FindMapping(const void* address) const {
const uintptr_t addr = (uintptr_t) address;
@ -544,7 +286,8 @@ bool LinuxDumper::HandleDeletedFileInMapping(char* path) const {
// Check |path| against the /proc/pid/exe 'symlink'.
char exe_link[NAME_MAX];
char new_path[NAME_MAX];
BuildProcPath(exe_link, pid_, "exe");
if (!BuildProcPath(exe_link, pid_, "exe"))
return false;
if (!SafeReadLink(exe_link, new_path))
return false;
if (my_strcmp(path, new_path) != 0)

47
src/client/linux/minidump_writer/linux_dumper.h
View file

@ -27,6 +27,14 @@
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// linux_dumper.h: Define the google_breakpad::LinuxDumper class, which
// is a base class for extracting information of a crashed process. It
// was originally a complete implementation using the ptrace API, but
// has been refactored to allow derived implementations supporting both
// ptrace and core dump. A portion of the original implementation is now
// in google_breakpad::LinuxPtraceDumper (see linux_ptrace_dumper.h for
// details).
#ifndef CLIENT_LINUX_MINIDUMP_WRITER_LINUX_DUMPER_H_
#define CLIENT_LINUX_MINIDUMP_WRITER_LINUX_DUMPER_H_
@ -121,15 +129,18 @@ class LinuxDumper {
virtual ~LinuxDumper();
// Parse the data for |threads| and |mappings|.
bool Init();
virtual bool Init();
// Return true if the dumper performs a post-mortem dump.
virtual bool IsPostMortem() const = 0;
// Suspend/resume all threads in the given process.
bool ThreadsSuspend();
bool ThreadsResume();
virtual bool ThreadsSuspend() = 0;
virtual bool ThreadsResume() = 0;
// Read information about the |index|-th thread of |threads_|.
// Returns true on success. One must have called |ThreadsSuspend| first.
virtual bool GetThreadInfoByIndex(size_t index, ThreadInfo* info);
virtual bool GetThreadInfoByIndex(size_t index, ThreadInfo* info) = 0;
// These are only valid after a call to |Init|.
const wasteful_vector<pid_t> &threads() { return threads_; }
@ -146,13 +157,14 @@ class LinuxDumper {
// Copy content of |length| bytes from a given process |child|,
// starting from |src|, into |dest|.
void CopyFromProcess(void* dest, pid_t child, const void* src,
size_t length);
virtual void CopyFromProcess(void* dest, pid_t child, const void* src,
size_t length) = 0;
// Builds a proc path for a certain pid for a node. path is a
// character array that is overwritten, and node is the final node
// without any slashes.
void BuildProcPath(char* path, pid_t pid, const char* node) const;
// Builds a proc path for a certain pid for a node (/proc/<pid>/<node>).
// |path| is a character array of at least NAME_MAX bytes to return the
// result.|node| is the final node without any slashes. Returns true on
// success.
virtual bool BuildProcPath(char* path, pid_t pid, const char* node) const = 0;
// Generate a File ID from the .text section of a mapped entry.
// If not a member, mapping_id is ignored.
@ -179,9 +191,10 @@ class LinuxDumper {
pid_t crash_thread() const { return crash_thread_; }
void set_crash_thread(pid_t crash_thread) { crash_thread_ = crash_thread; }
private:
bool EnumerateMappings();
bool EnumerateThreads();
protected:
virtual bool EnumerateMappings();
virtual bool EnumerateThreads() = 0;
// For the case where a running program has been deleted, it'll show up in
// /proc/pid/maps as "/path/to/program (deleted)". If this is the case, then
@ -208,9 +221,11 @@ class LinuxDumper {
mutable PageAllocator allocator_;
bool threads_suspended_;
wasteful_vector<pid_t> threads_; // the ids of all the threads
wasteful_vector<MappingInfo*> mappings_; // info from /proc/<pid>/maps
// IDs of all the threads.
wasteful_vector<pid_t> threads_;
// Info from /proc/<pid>/maps.
wasteful_vector<MappingInfo*> mappings_;
};
} // namespace google_breakpad

292
src/client/linux/minidump_writer/linux_ptrace_dumper.cc Normal file
View file

@ -0,0 +1,292 @@
// Copyright (c) 2012, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// linux_ptrace_dumper.cc: Implement google_breakpad::LinuxPtraceDumper.
// See linux_ptrace_dumper.h for detals.
// This class was originally splitted from google_breakpad::LinuxDumper.
// This code deals with the mechanics of getting information about a crashed
// process. Since this code may run in a compromised address space, the same
// rules apply as detailed at the top of minidump_writer.h: no libc calls and
// use the alternative allocator.
#include "client/linux/minidump_writer/linux_ptrace_dumper.h"
#include <asm/ptrace.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
#include "client/linux/minidump_writer/directory_reader.h"
#include "client/linux/minidump_writer/line_reader.h"
#include "common/linux/linux_libc_support.h"
#include "third_party/lss/linux_syscall_support.h"
// Suspends a thread by attaching to it.
static bool SuspendThread(pid_t pid) {
// This may fail if the thread has just died or debugged.
errno = 0;
if (sys_ptrace(PTRACE_ATTACH, pid, NULL, NULL) != 0 &&
errno != 0) {
return false;
}
while (sys_waitpid(pid, NULL, __WALL) < 0) {
if (errno != EINTR) {
sys_ptrace(PTRACE_DETACH, pid, NULL, NULL);
return false;
}
}
#if defined(__i386) || defined(__x86_64)
// On x86, the stack pointer is NULL or -1, when executing trusted code in
// the seccomp sandbox. Not only does this cause difficulties down the line
// when trying to dump the thread's stack, it also results in the minidumps
// containing information about the trusted threads. This information is
// generally completely meaningless and just pollutes the minidumps.
// We thus test the stack pointer and exclude any threads that are part of
// the seccomp sandbox's trusted code.
user_regs_struct regs;
if (sys_ptrace(PTRACE_GETREGS, pid, NULL, &regs) == -1 ||
#if defined(__i386)
!regs.esp
#elif defined(__x86_64)
!regs.rsp
#endif
) {
sys_ptrace(PTRACE_DETACH, pid, NULL, NULL);
return false;
}
#endif
return true;
}
// Resumes a thread by detaching from it.
static bool ResumeThread(pid_t pid) {
return sys_ptrace(PTRACE_DETACH, pid, NULL, NULL) >= 0;
}
namespace google_breakpad {
LinuxPtraceDumper::LinuxPtraceDumper(pid_t pid)
: LinuxDumper(pid),
threads_suspended_(false) {
}
bool LinuxPtraceDumper::BuildProcPath(char* path, pid_t pid,
const char* node) const {
if (!path || !node || pid <= 0)
return false;
size_t node_len = my_strlen(node);
if (node_len == 0)
return false;
const unsigned pid_len = my_int_len(pid);
const size_t total_length = 6 + pid_len + 1 + node_len;
if (total_length >= NAME_MAX)
return false;
memcpy(path, "/proc/", 6);
my_itos(path + 6, pid, pid_len);
path[6 + pid_len] = '/';
memcpy(path + 6 + pid_len + 1, node, node_len);
path[total_length] = '\0';
return true;
}
void LinuxPtraceDumper::CopyFromProcess(void* dest, pid_t child,
const void* src, size_t length) {
unsigned long tmp = 55;
size_t done = 0;
static const size_t word_size = sizeof(tmp);
uint8_t* const local = (uint8_t*) dest;
uint8_t* const remote = (uint8_t*) src;
while (done < length) {
const size_t l = (length - done > word_size) ? word_size : (length - done);
if (sys_ptrace(PTRACE_PEEKDATA, child, remote + done, &tmp) == -1) {
tmp = 0;
}
memcpy(local + done, &tmp, l);
done += l;
}
}
// Read thread info from /proc/$pid/status.
// Fill out the |tgid|, |ppid| and |pid| members of |info|. If unavailable,
// these members are set to -1. Returns true iff all three members are
// available.
bool LinuxPtraceDumper::GetThreadInfoByIndex(size_t index, ThreadInfo* info) {
if (index >= threads_.size())
return false;
pid_t tid = threads_[index];
assert(info != NULL);
char status_path[NAME_MAX];
if (!BuildProcPath(status_path, tid, "status"))
return false;
const int fd = sys_open(status_path, O_RDONLY, 0);
if (fd < 0)
return false;
LineReader* const line_reader = new(allocator_) LineReader(fd);
const char* line;
unsigned line_len;
info->ppid = info->tgid = -1;
while (line_reader->GetNextLine(&line, &line_len)) {
if (my_strncmp("Tgid:\t", line, 6) == 0) {
my_strtoui(&info->tgid, line + 6);
} else if (my_strncmp("PPid:\t", line, 6) == 0) {
my_strtoui(&info->ppid, line + 6);
}
line_reader->PopLine(line_len);
}
if (info->ppid == -1 || info->tgid == -1)
return false;
if (sys_ptrace(PTRACE_GETREGS, tid, NULL, &info->regs) == -1) {
return false;
}
#if !defined(__ANDROID__)
if (sys_ptrace(PTRACE_GETFPREGS, tid, NULL, &info->fpregs) == -1) {
return false;
}
#endif
#if defined(__i386)
if (sys_ptrace(PTRACE_GETFPXREGS, tid, NULL, &info->fpxregs) == -1)
return false;
#endif
#if defined(__i386) || defined(__x86_64)
for (unsigned i = 0; i < ThreadInfo::kNumDebugRegisters; ++i) {
if (sys_ptrace(
PTRACE_PEEKUSER, tid,
reinterpret_cast<void*> (offsetof(struct user,
u_debugreg[0]) + i *
sizeof(debugreg_t)),
&info->dregs[i]) == -1) {
return false;
}
}
#endif
const uint8_t* stack_pointer;
#if defined(__i386)
memcpy(&stack_pointer, &info->regs.esp, sizeof(info->regs.esp));
#elif defined(__x86_64)
memcpy(&stack_pointer, &info->regs.rsp, sizeof(info->regs.rsp));
#elif defined(__ARM_EABI__)
memcpy(&stack_pointer, &info->regs.ARM_sp, sizeof(info->regs.ARM_sp));
#else
#error "This code hasn't been ported to your platform yet."
#endif
return GetStackInfo(&info->stack, &info->stack_len,
(uintptr_t) stack_pointer);
}
bool LinuxPtraceDumper::IsPostMortem() const {
return false;
}
bool LinuxPtraceDumper::ThreadsSuspend() {
if (threads_suspended_)
return true;
for (size_t i = 0; i < threads_.size(); ++i) {
if (!SuspendThread(threads_[i])) {
// If the thread either disappeared before we could attach to it, or if
// it was part of the seccomp sandbox's trusted code, it is OK to
// silently drop it from the minidump.
memmove(&threads_[i], &threads_[i+1],
(threads_.size() - i - 1) * sizeof(threads_[i]));
threads_.resize(threads_.size() - 1);
--i;
}
}
threads_suspended_ = true;
return threads_.size() > 0;
}
bool LinuxPtraceDumper::ThreadsResume() {
if (!threads_suspended_)
return false;
bool good = true;
for (size_t i = 0; i < threads_.size(); ++i)
good &= ResumeThread(threads_[i]);
threads_suspended_ = false;
return good;
}
// Parse /proc/$pid/task to list all the threads of the process identified by
// pid.
bool LinuxPtraceDumper::EnumerateThreads() {
char task_path[NAME_MAX];
if (!BuildProcPath(task_path, pid_, "task"))
return false;
const int fd = sys_open(task_path, O_RDONLY | O_DIRECTORY, 0);
if (fd < 0)
return false;
DirectoryReader* dir_reader = new(allocator_) DirectoryReader(fd);
// The directory may contain duplicate entries which we filter by assuming
// that they are consecutive.
int last_tid = -1;
const char* dent_name;
while (dir_reader->GetNextEntry(&dent_name)) {
if (my_strcmp(dent_name, ".") &&
my_strcmp(dent_name, "..")) {
int tid = 0;
if (my_strtoui(&tid, dent_name) &&
last_tid != tid) {
last_tid = tid;
threads_.push_back(tid);
}
}
dir_reader->PopEntry();
}
sys_close(fd);
return true;
}
} // namespace google_breakpad

92
src/client/linux/minidump_writer/linux_ptrace_dumper.h Normal file
View file

@ -0,0 +1,92 @@
// Copyright (c) 2012, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// linux_ptrace_dumper.h: Define the google_breakpad::LinuxPtraceDumper
// class, which is derived from google_breakpad::LinuxDumper to extract
// information from a crashed process via ptrace.
// This class was originally splitted from google_breakpad::LinuxDumper.
#ifndef CLIENT_LINUX_MINIDUMP_WRITER_LINUX_PTRACE_DUMPER_H_
#define CLIENT_LINUX_MINIDUMP_WRITER_LINUX_PTRACE_DUMPER_H_
#include "client/linux/minidump_writer/linux_dumper.h"
namespace google_breakpad {
class LinuxPtraceDumper : public LinuxDumper {
public:
// Constructs a dumper for extracting information of a given process
// with a process ID of |pid|.
explicit LinuxPtraceDumper(pid_t pid);
// Implements LinuxDumper::BuildProcPath().
// Builds a proc path for a certain pid for a node (/proc/<pid>/<node>).
// |path| is a character array of at least NAME_MAX bytes to return the
// result. |node| is the final node without any slashes. Returns true on
// success.
virtual bool BuildProcPath(char* path, pid_t pid, const char* node) const;
// Implements LinuxDumper::CopyFromProcess().
// Copies content of |length| bytes from a given process |child|,
// starting from |src|, into |dest|. This method uses ptrace to extract
// the content from the target process.
virtual void CopyFromProcess(void* dest, pid_t child, const void* src,
size_t length);
// Implements LinuxDumper::GetThreadInfoByIndex().
// Reads information about the |index|-th thread of |threads_|.
// Returns true on success. One must have called |ThreadsSuspend| first.
virtual bool GetThreadInfoByIndex(size_t index, ThreadInfo* info);
// Implements LinuxDumper::IsPostMortem().
// Always returns false to indicate this dumper performs a dump of
// a crashed process via ptrace.
virtual bool IsPostMortem() const;
// Implements LinuxDumper::ThreadsSuspend().
// Suspends all threads in the given process. Returns true on success.
virtual bool ThreadsSuspend();
// Implements LinuxDumper::ThreadsResume().
// Resumes all threads in the given process. Returns true on success.
virtual bool ThreadsResume();
protected:
// Implements LinuxDumper::EnumerateThreads().
// Enumerates all threads of the given process into |threads_|.
virtual bool EnumerateThreads();
private:
// Set to true if all threads of the crashed process are suspended.
bool threads_suspended_;
};
} // namespace google_breakpad
#endif // CLIENT_LINUX_HANDLER_LINUX_PTRACE_DUMPER_H_

94
src/client/linux/minidump_writer/linux_dumper_unittest.cc → src/client/linux/minidump_writer/linux_ptrace_dumper_unittest.cc
View file

@ -27,7 +27,11 @@
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <string>
// linux_ptrace_dumper_unittest.cc:
// Unit tests for google_breakpad::LinuxPtraceDumoer.
//
// This file was renamed from linux_dumper_unittest.cc and modified due
// to LinuxDumper being splitted into two classes.
#include <fcntl.h>
#include <limits.h>
@ -39,8 +43,10 @@
#include <sys/stat.h>
#include <sys/types.h>
#include <string>
#include "breakpad_googletest_includes.h"
#include "client/linux/minidump_writer/linux_dumper.h"
#include "client/linux/minidump_writer/linux_ptrace_dumper.h"
#include "common/linux/eintr_wrapper.h"
#include "common/linux/file_id.h"
#include "common/linux/safe_readlink.h"
@ -50,7 +56,8 @@ using std::string;
using namespace google_breakpad;
namespace {
typedef testing::Test LinuxDumperTest;
typedef testing::Test LinuxPtraceDumperTest;
string GetHelperBinary() {
// Locate helper binary next to the current binary.
@ -69,14 +76,14 @@ string GetHelperBinary() {
return helper_path;
}
} // namespace
TEST(LinuxPtraceDumperTest, Setup) {
LinuxPtraceDumper dumper(getpid());
}
TEST(LinuxDumperTest, Setup) {
LinuxDumper dumper(getpid());
}
TEST(LinuxDumperTest, FindMappings) {
LinuxDumper dumper(getpid());
TEST(LinuxPtraceDumperTest, FindMappings) {
LinuxPtraceDumper dumper(getpid());
ASSERT_TRUE(dumper.Init());
ASSERT_TRUE(dumper.FindMapping(reinterpret_cast<void*>(getpid)));
@ -84,8 +91,8 @@ TEST(LinuxDumperTest, FindMappings) {
ASSERT_FALSE(dumper.FindMapping(NULL));
}
TEST(LinuxDumperTest, ThreadList) {
LinuxDumper dumper(getpid());
TEST(LinuxPtraceDumperTest, ThreadList) {
LinuxPtraceDumper dumper(getpid());
ASSERT_TRUE(dumper.Init());
ASSERT_GE(dumper.threads().size(), (size_t)1);
@ -115,7 +122,7 @@ private:
size_t size_;
};
TEST(LinuxDumperTest, MergedMappings) {
TEST(LinuxPtraceDumperTest, MergedMappings) {
string helper_path(GetHelperBinary());
if (helper_path.empty()) {
FAIL() << "Couldn't find helper binary";
@ -143,7 +150,8 @@ TEST(LinuxDumperTest, MergedMappings) {
StackHelper helper(fd, mapping, kMappingSize);
// Carve a page out of the first mapping with different permissions.
char* inside_mapping = reinterpret_cast<char*>(mmap(mapping + 2 *kPageSize,
char* inside_mapping = reinterpret_cast<char*>(
mmap(mapping + 2 *kPageSize,
kPageSize,
PROT_NONE,
MAP_SHARED | MAP_FIXED,
@ -153,8 +161,8 @@ TEST(LinuxDumperTest, MergedMappings) {
kPageSize));
ASSERT_TRUE(inside_mapping);
// Now check that LinuxDumper interpreted the mappings properly.
LinuxDumper dumper(getpid());
// Now check that LinuxPtraceDumper interpreted the mappings properly.
LinuxPtraceDumper dumper(getpid());
ASSERT_TRUE(dumper.Init());
int mapping_count = 0;
for (unsigned i = 0; i < dumper.mappings().size(); ++i) {
@ -171,7 +179,7 @@ TEST(LinuxDumperTest, MergedMappings) {
EXPECT_EQ(1, mapping_count);
}
TEST(LinuxDumperTest, VerifyStackReadWithMultipleThreads) {
TEST(LinuxPtraceDumperTest, VerifyStackReadWithMultipleThreads) {
static const int kNumberOfThreadsInHelperProgram = 5;
char kNumberOfThreadsArgument[2];
sprintf(kNumberOfThreadsArgument, "%d", kNumberOfThreadsInHelperProgram);
@ -218,7 +226,7 @@ TEST(LinuxDumperTest, VerifyStackReadWithMultipleThreads) {
close(fds[0]);
// Child is ready now.
LinuxDumper dumper(child_pid);
LinuxPtraceDumper dumper(child_pid);
ASSERT_TRUE(dumper.Init());
EXPECT_EQ((size_t)kNumberOfThreadsInHelperProgram, dumper.threads().size());
EXPECT_TRUE(dumper.ThreadsSuspend());
@ -247,39 +255,33 @@ TEST(LinuxDumperTest, VerifyStackReadWithMultipleThreads) {
kill(child_pid, SIGKILL);
}
TEST(LinuxDumperTest, BuildProcPath) {
TEST(LinuxPtraceDumperTest, BuildProcPath) {
const pid_t pid = getpid();
LinuxDumper dumper(pid);
LinuxPtraceDumper dumper(pid);
char maps_path[256] = "dummymappath";
char maps_path_expected[256];
char maps_path[NAME_MAX] = "";
char maps_path_expected[NAME_MAX];
snprintf(maps_path_expected, sizeof(maps_path_expected),
"/proc/%d/maps", pid);
dumper.BuildProcPath(maps_path, pid, "maps");
ASSERT_STREQ(maps_path, maps_path_expected);
EXPECT_TRUE(dumper.BuildProcPath(maps_path, pid, "maps"));
EXPECT_STREQ(maps_path_expected, maps_path);
// In release mode, we expect BuildProcPath to handle the invalid
// parameters correctly and fill map_path with an empty
// NULL-terminated string.
#ifdef NDEBUG
snprintf(maps_path, sizeof(maps_path), "dummymappath");
dumper.BuildProcPath(maps_path, 0, "maps");
EXPECT_STREQ(maps_path, "");
EXPECT_FALSE(dumper.BuildProcPath(NULL, pid, "maps"));
EXPECT_FALSE(dumper.BuildProcPath(maps_path, 0, "maps"));
EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, ""));
EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, NULL));
snprintf(maps_path, sizeof(maps_path), "dummymappath");
dumper.BuildProcPath(maps_path, getpid(), "");
EXPECT_STREQ(maps_path, "");
snprintf(maps_path, sizeof(maps_path), "dummymappath");
dumper.BuildProcPath(maps_path, getpid(), NULL);
EXPECT_STREQ(maps_path, "");
#endif
char long_node[NAME_MAX];
size_t long_node_len = NAME_MAX - strlen("/proc/123") - 1;
memset(long_node, 'a', long_node_len);
long_node[long_node_len] = '\0';
EXPECT_FALSE(dumper.BuildProcPath(maps_path, 123, long_node));
}
#if !defined(__ARM_EABI__)
// Ensure that the linux-gate VDSO is included in the mapping list.
TEST(LinuxDumperTest, MappingsIncludeLinuxGate) {
LinuxDumper dumper(getpid());
TEST(LinuxPtraceDumperTest, MappingsIncludeLinuxGate) {
LinuxPtraceDumper dumper(getpid());
ASSERT_TRUE(dumper.Init());
void* linux_gate_loc = dumper.FindBeginningOfLinuxGateSharedLibrary(getpid());
@ -301,8 +303,8 @@ TEST(LinuxDumperTest, MappingsIncludeLinuxGate) {
}
// Ensure that the linux-gate VDSO can generate a non-zeroed File ID.
TEST(LinuxDumperTest, LinuxGateMappingID) {
LinuxDumper dumper(getpid());
TEST(LinuxPtraceDumperTest, LinuxGateMappingID) {
LinuxPtraceDumper dumper(getpid());
ASSERT_TRUE(dumper.Init());
bool found_linux_gate = false;
@ -329,7 +331,7 @@ TEST(LinuxDumperTest, LinuxGateMappingID) {
// Ensure that the linux-gate VDSO can generate a non-zeroed File ID
// from a child process.
TEST(LinuxDumperTest, LinuxGateMappingIDChild) {
TEST(LinuxPtraceDumperTest, LinuxGateMappingIDChild) {
int fds[2];
ASSERT_NE(-1, pipe(fds));
@ -345,7 +347,7 @@ TEST(LinuxDumperTest, LinuxGateMappingIDChild) {
}
close(fds[0]);
LinuxDumper dumper(child);
LinuxPtraceDumper dumper(child);
ASSERT_TRUE(dumper.Init());
bool found_linux_gate = false;
@ -375,7 +377,7 @@ TEST(LinuxDumperTest, LinuxGateMappingIDChild) {
}
#endif
TEST(LinuxDumperTest, FileIDsMatch) {
TEST(LinuxPtraceDumperTest, FileIDsMatch) {
// Calculate the File ID of our binary using both
// FileID::ElfFileIdentifier and LinuxDumper::ElfFileIdentifierForMapping
// and ensure that we get the same result from both.
@ -397,7 +399,7 @@ TEST(LinuxDumperTest, FileIDsMatch) {
}
close(fds[0]);
LinuxDumper dumper(child);
LinuxPtraceDumper dumper(child);
ASSERT_TRUE(dumper.Init());
const wasteful_vector<MappingInfo*> mappings = dumper.mappings();
bool found_exe = false;

36
src/client/linux/minidump_writer/minidump_writer.cc
View file

@ -74,6 +74,8 @@
#include "client/linux/handler/exception_handler.h"
#include "client/linux/minidump_writer/line_reader.h"
#include "client/linux/minidump_writer/linux_dumper.h"
#include "client/linux/minidump_writer/linux_core_dumper.h"
#include "client/linux/minidump_writer/linux_ptrace_dumper.h"
#include "client/linux/minidump_writer/minidump_extension_linux.h"
#include "common/linux/linux_libc_support.h"
#include "third_party/lss/linux_syscall_support.h"
@ -372,9 +374,9 @@ class MinidumpWriter {
const MappingList& mappings,
LinuxDumper* dumper)
: filename_(filename),
ucontext_(&context->context),
ucontext_(context ? &context->context : NULL),
#if !defined(__ARM_EABI__)
float_state_(&context->float_state),
float_state_(context ? &context->float_state : NULL),
#else
// TODO: fix this after fixing ExceptionHandler
float_state_(NULL),
@ -401,11 +403,17 @@ class MinidumpWriter {
struct r_debug* r_debug = NULL;
uint32_t dynamic_length = 0;
#if !defined(__ANDROID__)
// This code assumes the crashing process is the same as this process and
// may hang or take a long time to complete if not so.
// Thus, we skip this code for a post-mortem based dump.
if (!dumper_->IsPostMortem()) {
// The Android NDK is missing structure definitions for most of this.
// For now, it's simpler just to skip it.
for (int i = 0;;) {
ElfW(Dyn) dyn;
dynamic_length += sizeof(dyn);
// NOTE: Use of _DYNAMIC assumes this is the same process as the
// crashing process. This loop will go forever if it's out of bounds.
dumper_->CopyFromProcess(&dyn, GetCrashThread(), _DYNAMIC+i++,
sizeof(dyn));
if (dyn.d_tag == DT_DEBUG) {
@ -415,6 +423,7 @@ class MinidumpWriter {
break;
}
}
}
#endif
// A minidump file contains a number of tagged streams. This is the number
@ -647,7 +656,8 @@ class MinidumpWriter {
// we used the actual state of the thread we would find it running in the
// signal handler with the alternative stack, which would be deeply
// unhelpful.
if ((pid_t)thread.thread_id == GetCrashThread()) {
if (static_cast<pid_t>(thread.thread_id) == GetCrashThread() &&
!dumper_->IsPostMortem()) {
const void* stack;
size_t stack_len;
if (!dumper_->GetStackInfo(&stack, &stack_len, GetStackPointer()))
@ -736,6 +746,10 @@ class MinidumpWriter {
CPUFillFromThreadInfo(cpu.get(), info);
PopSeccompStackFrame(cpu.get(), thread, stack_copy);
thread.thread_context = cpu.location();
if (dumper_->threads()[i] == GetCrashThread()) {
assert(dumper_->IsPostMortem());
crashing_thread_context_ = cpu.location();
}
}
list.CopyIndexAfterObject(i, &thread, sizeof(thread));
@ -1281,7 +1295,8 @@ class MinidumpWriter {
bool WriteProcFile(MDLocationDescriptor* result, pid_t pid,
const char* filename) {
char buf[NAME_MAX];
dumper_->BuildProcPath(buf, pid, filename);
if (!dumper_->BuildProcPath(buf, pid, filename))
return false;
return WriteFile(result, buf);
}
@ -1312,7 +1327,7 @@ bool WriteMinidump(const char* filename, pid_t crashing_process,
return false;
const ExceptionHandler::CrashContext* context =
reinterpret_cast<const ExceptionHandler::CrashContext*>(blob);
LinuxDumper dumper(crashing_process);
LinuxPtraceDumper dumper(crashing_process);
dumper.set_crash_address(
reinterpret_cast<uintptr_t>(context->siginfo.si_addr));
dumper.set_crash_signal(context->siginfo.si_signo);
@ -1323,4 +1338,15 @@ bool WriteMinidump(const char* filename, pid_t crashing_process,
return writer.Dump();
}
bool WriteMinidumpFromCore(const char* filename,
const char* core_path,
const char* procfs_override) {
MappingList mappings;
LinuxCoreDumper dumper(0, core_path, procfs_override);
MinidumpWriter writer(filename, NULL, mappings, &dumper);
if (!writer.Init())
return false;
return writer.Dump();
}
} // namespace google_breakpad

6
src/client/linux/minidump_writer/minidump_writer.h
View file

@ -62,6 +62,12 @@ bool WriteMinidump(const char* filename, pid_t crashing_process,
const void* blob, size_t blob_size,
const MappingList& mappings);
// Write a minidump to the filesystem. Same as above, but uses the given
// core file and procfs directory to generate the minidump post mortem.
bool WriteMinidumpFromCore(const char* filename,
const char* core_path,
const char* procfs_override);
} // namespace google_breakpad
#endif // CLIENT_LINUX_MINIDUMP_WRITER_MINIDUMP_WRITER_H_

2
src/common/linux/elf_core_dump_unittest.cc
View file

@ -141,7 +141,7 @@ TEST(ElfCoreDumpTest, ValidCoreFile) {
// TODO(benchan): Revert to use ASSERT_TRUE once the flakiness in
// CrashGenerator is identified and fixed.
if (!crash_generator.CreateChildCrash(kNumOfThreads, kCrashThread,
kCrashSignal)) {
kCrashSignal, NULL)) {
fprintf(stderr, "ElfCoreDumpTest.ValidCoreFile test is skipped "
"due to no core dump generated");
return;

6
src/common/linux/tests/crash_generator.cc
View file

@ -144,7 +144,8 @@ bool CrashGenerator::SetCoreFileSizeLimit(rlim_t limit) const {
}
bool CrashGenerator::CreateChildCrash(
unsigned num_threads, unsigned crash_thread, int crash_signal) {
unsigned num_threads, unsigned crash_thread, int crash_signal,
pid_t* child_pid) {
if (num_threads == 0 || crash_thread >= num_threads)
return false;
@ -178,6 +179,9 @@ bool CrashGenerator::CreateChildCrash(
perror("CrashGenerator: Child process not killed by the expected signal");
return false;
}
if (child_pid)
*child_pid = pid;
return true;
}

2
src/common/linux/tests/crash_generator.h
View file

@ -70,7 +70,7 @@ class CrashGenerator {
// a signal with number |crash_signal| to the |crash_thread|-th thread.
// Returns true on success.
bool CreateChildCrash(unsigned num_threads, unsigned crash_thread,
int crash_signal);
int crash_signal, pid_t* child_pid);
// Creates |num_threads| threads in the child process.
void CreateThreadsInChildProcess(unsigned num_threads);

57
src/tools/linux/core2md/core2md.cc Normal file
View file

@ -0,0 +1,57 @@
// Copyright (c) 2012, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// core2md.cc: A utility to convert an ELF core file to a minidump file.
#include <stdio.h>
#include "client/linux/minidump_writer/minidump_writer.h"
static int ShowUsage(const char* argv0) {
fprintf(stderr, "Usage: %s <core file> <procfs dir> <output>\n", argv0);
return 1;
}
int main(int argc, char *argv[]) {
if (argc != 4) {
return ShowUsage(argv[0]);
}
const char* core_file = argv[1];
const char* procfs_dir = argv[2];
const char* minidump_file = argv[3];
if (!google_breakpad::WriteMinidumpFromCore(minidump_file,
core_file,
procfs_dir)) {
fprintf(stderr, "Unable to generate minidump.\n");
return 1;
}
return 0;
}