mirror of
https://github.com/yuzu-emu/breakpad.git
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Linux: Check the CRC32 of the debug link file in the symbol dumper.
R=mark@chromium.org Review URL: https://breakpad.appspot.com/1644002 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1320 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
thestig@chromium.org
parent
9aaae65466
commit
3d023a3472
@ -462,6 +462,7 @@ src_tools_linux_dump_syms_dump_syms_SOURCES = \
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src/common/dwarf/bytereader.cc \
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src/common/dwarf/dwarf2diehandler.cc \
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src/common/dwarf/dwarf2reader.cc \
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src/common/linux/crc32.cc \
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src/common/linux/dump_symbols.cc \
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src/common/linux/elf_symbols_to_module.cc \
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src/common/linux/elfutils.cc \
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@ -510,6 +511,7 @@ src_common_dumper_unittest_SOURCES = \
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src/common/dwarf/dwarf2reader.cc \
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src/common/dwarf/dwarf2reader_cfi_unittest.cc \
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src/common/dwarf/dwarf2reader_die_unittest.cc \
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src/common/linux/crc32.cc \
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src/common/linux/dump_symbols.cc \
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src/common/linux/dump_symbols_unittest.cc \
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src/common/linux/elf_core_dump.cc \
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@ -1115,6 +1117,7 @@ EXTRA_DIST = \
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src/client/windows/sender/crash_report_sender.vcproj \
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src/common/convert_UTF.c \
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src/common/convert_UTF.h \
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src/common/linux/crc32.cc \
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src/common/linux/dump_symbols.cc \
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src/common/linux/dump_symbols.h \
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src/common/linux/elf_symbols_to_module.cc \
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30
Makefile.in
30
Makefile.in
@ -610,7 +610,7 @@ am__src_common_dumper_unittest_SOURCES_DIST = \
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src/common/dwarf/dwarf2reader.cc \
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src/common/dwarf/dwarf2reader_cfi_unittest.cc \
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src/common/dwarf/dwarf2reader_die_unittest.cc \
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src/common/linux/dump_symbols.cc \
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src/common/linux/crc32.cc src/common/linux/dump_symbols.cc \
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src/common/linux/dump_symbols_unittest.cc \
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src/common/linux/elf_core_dump.cc \
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src/common/linux/elf_core_dump_unittest.cc \
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@ -654,6 +654,7 @@ am__src_common_dumper_unittest_SOURCES_DIST = \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader_cfi_unittest.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-crc32.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-dump_symbols.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-dump_symbols_unittest.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/src_common_dumper_unittest-elf_core_dump.$(OBJEXT) \
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@ -1211,7 +1212,7 @@ am__src_tools_linux_dump_syms_dump_syms_SOURCES_DIST = \
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src/common/module.cc src/common/stabs_reader.cc \
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src/common/stabs_to_module.cc src/common/dwarf/bytereader.cc \
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src/common/dwarf/dwarf2diehandler.cc \
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src/common/dwarf/dwarf2reader.cc \
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src/common/dwarf/dwarf2reader.cc src/common/linux/crc32.cc \
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src/common/linux/dump_symbols.cc \
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src/common/linux/elf_symbols_to_module.cc \
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src/common/linux/elfutils.cc src/common/linux/file_id.cc \
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@ -1229,6 +1230,7 @@ am__src_tools_linux_dump_syms_dump_syms_SOURCES_DIST = \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/bytereader.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2diehandler.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/crc32.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/dump_symbols.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/elf_symbols_to_module.$(OBJEXT) \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/elfutils.$(OBJEXT) \
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@ -2022,6 +2024,7 @@ TESTS = $(check_PROGRAMS) $(check_SCRIPTS)
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/bytereader.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2diehandler.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/crc32.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/dump_symbols.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/elf_symbols_to_module.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/elfutils.cc \
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@ -2070,6 +2073,7 @@ TESTS = $(check_PROGRAMS) $(check_SCRIPTS)
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader_cfi_unittest.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/dwarf/dwarf2reader_die_unittest.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/crc32.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/dump_symbols.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/dump_symbols_unittest.cc \
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@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@ src/common/linux/elf_core_dump.cc \
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@ -2712,6 +2716,7 @@ EXTRA_DIST = \
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src/client/windows/sender/crash_report_sender.vcproj \
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src/common/convert_UTF.c \
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src/common/convert_UTF.h \
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src/common/linux/crc32.cc \
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src/common/linux/dump_symbols.cc \
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src/common/linux/dump_symbols.h \
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src/common/linux/elf_symbols_to_module.cc \
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@ -3387,6 +3392,9 @@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader_cfi_unittest.$(OBJEXT):
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src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.$(OBJEXT): \
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src/common/dwarf/$(am__dirstamp) \
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src/common/dwarf/$(DEPDIR)/$(am__dirstamp)
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src/common/linux/src_common_dumper_unittest-crc32.$(OBJEXT): \
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src/common/linux/$(am__dirstamp) \
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src/common/linux/$(DEPDIR)/$(am__dirstamp)
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src/common/linux/src_common_dumper_unittest-dump_symbols.$(OBJEXT): \
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src/common/linux/$(am__dirstamp) \
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src/common/linux/$(DEPDIR)/$(am__dirstamp)
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@ -3893,6 +3901,8 @@ src/common/dwarf/dwarf2diehandler.$(OBJEXT): \
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src/common/dwarf/dwarf2reader.$(OBJEXT): \
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src/common/dwarf/$(am__dirstamp) \
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src/common/dwarf/$(DEPDIR)/$(am__dirstamp)
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src/common/linux/crc32.$(OBJEXT): src/common/linux/$(am__dirstamp) \
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src/common/linux/$(DEPDIR)/$(am__dirstamp)
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src/common/linux/dump_symbols.$(OBJEXT): \
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src/common/linux/$(am__dirstamp) \
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src/common/linux/$(DEPDIR)/$(am__dirstamp)
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@ -4062,6 +4072,7 @@ distclean-compile:
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader_cfi_unittest.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/dwarf/$(DEPDIR)/src_common_dumper_unittest-dwarf2reader_die_unittest.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/crc32.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/dump_symbols.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/elf_core_dump.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/elf_symbols_to_module.Po@am__quote@
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@ -4074,6 +4085,7 @@ distclean-compile:
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/safe_readlink.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_client_linux_linux_client_unittest_shlib-elf_core_dump.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_client_linux_linux_client_unittest_shlib-linux_libc_support_unittest.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-crc32.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-dump_symbols.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-dump_symbols_unittest.Po@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@src/common/linux/$(DEPDIR)/src_common_dumper_unittest-elf_core_dump.Po@am__quote@
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@ -4978,6 +4990,20 @@ src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.obj: src/c
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@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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@am__fastdepCXX_FALSE@ $(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/dwarf/src_common_dumper_unittest-dwarf2reader_die_unittest.obj `if test -f 'src/common/dwarf/dwarf2reader_die_unittest.cc'; then $(CYGPATH_W) 'src/common/dwarf/dwarf2reader_die_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/dwarf/dwarf2reader_die_unittest.cc'; fi`
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src/common/linux/src_common_dumper_unittest-crc32.o: src/common/linux/crc32.cc
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@am__fastdepCXX_TRUE@ $(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/src_common_dumper_unittest-crc32.o -MD -MP -MF src/common/linux/$(DEPDIR)/src_common_dumper_unittest-crc32.Tpo -c -o src/common/linux/src_common_dumper_unittest-crc32.o `test -f 'src/common/linux/crc32.cc' || echo '$(srcdir)/'`src/common/linux/crc32.cc
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@am__fastdepCXX_TRUE@ $(AM_V_at)$(am__mv) src/common/linux/$(DEPDIR)/src_common_dumper_unittest-crc32.Tpo src/common/linux/$(DEPDIR)/src_common_dumper_unittest-crc32.Po
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@AMDEP_TRUE@@am__fastdepCXX_FALSE@ $(AM_V_CXX)source='src/common/linux/crc32.cc' object='src/common/linux/src_common_dumper_unittest-crc32.o' libtool=no @AMDEPBACKSLASH@
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@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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@am__fastdepCXX_FALSE@ $(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/linux/src_common_dumper_unittest-crc32.o `test -f 'src/common/linux/crc32.cc' || echo '$(srcdir)/'`src/common/linux/crc32.cc
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src/common/linux/src_common_dumper_unittest-crc32.obj: src/common/linux/crc32.cc
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@am__fastdepCXX_TRUE@ $(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/src_common_dumper_unittest-crc32.obj -MD -MP -MF src/common/linux/$(DEPDIR)/src_common_dumper_unittest-crc32.Tpo -c -o src/common/linux/src_common_dumper_unittest-crc32.obj `if test -f 'src/common/linux/crc32.cc'; then $(CYGPATH_W) 'src/common/linux/crc32.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/crc32.cc'; fi`
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@am__fastdepCXX_TRUE@ $(AM_V_at)$(am__mv) src/common/linux/$(DEPDIR)/src_common_dumper_unittest-crc32.Tpo src/common/linux/$(DEPDIR)/src_common_dumper_unittest-crc32.Po
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@AMDEP_TRUE@@am__fastdepCXX_FALSE@ $(AM_V_CXX)source='src/common/linux/crc32.cc' object='src/common/linux/src_common_dumper_unittest-crc32.obj' libtool=no @AMDEPBACKSLASH@
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@AMDEP_TRUE@@am__fastdepCXX_FALSE@ DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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@am__fastdepCXX_FALSE@ $(AM_V_CXX@am__nodep@)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/linux/src_common_dumper_unittest-crc32.obj `if test -f 'src/common/linux/crc32.cc'; then $(CYGPATH_W) 'src/common/linux/crc32.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/linux/crc32.cc'; fi`
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src/common/linux/src_common_dumper_unittest-dump_symbols.o: src/common/linux/dump_symbols.cc
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@am__fastdepCXX_TRUE@ $(AM_V_CXX)$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_common_dumper_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/linux/src_common_dumper_unittest-dump_symbols.o -MD -MP -MF src/common/linux/$(DEPDIR)/src_common_dumper_unittest-dump_symbols.Tpo -c -o src/common/linux/src_common_dumper_unittest-dump_symbols.o `test -f 'src/common/linux/dump_symbols.cc' || echo '$(srcdir)/'`src/common/linux/dump_symbols.cc
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@am__fastdepCXX_TRUE@ $(AM_V_at)$(am__mv) src/common/linux/$(DEPDIR)/src_common_dumper_unittest-dump_symbols.Tpo src/common/linux/$(DEPDIR)/src_common_dumper_unittest-dump_symbols.Po
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70
src/common/linux/crc32.cc
Normal file
70
src/common/linux/crc32.cc
Normal file
@ -0,0 +1,70 @@
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// Copyright 2014 Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
|
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// met:
|
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//
|
||||
// * 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.
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#include "common/linux/crc32.h"
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namespace google_breakpad {
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// This implementation is based on the sample implementation in RFC 1952.
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// CRC32 polynomial, in reversed form.
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// See RFC 1952, or http://en.wikipedia.org/wiki/Cyclic_redundancy_check
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static const uint32_t kCrc32Polynomial = 0xEDB88320;
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static uint32_t kCrc32Table[256] = { 0 };
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#define arraysize(f) (sizeof(f) / sizeof(*f))
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static void EnsureCrc32TableInited() {
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if (kCrc32Table[arraysize(kCrc32Table) - 1])
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return; // already inited
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for (uint32_t i = 0; i < arraysize(kCrc32Table); ++i) {
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uint32_t c = i;
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for (size_t j = 0; j < 8; ++j) {
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if (c & 1) {
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c = kCrc32Polynomial ^ (c >> 1);
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} else {
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c >>= 1;
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}
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}
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kCrc32Table[i] = c;
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}
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}
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uint32_t UpdateCrc32(uint32_t start, const void* buf, size_t len) {
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EnsureCrc32TableInited();
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uint32_t c = start ^ 0xFFFFFFFF;
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const uint8_t* u = static_cast<const uint8_t*>(buf);
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for (size_t i = 0; i < len; ++i) {
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c = kCrc32Table[(c ^ u[i]) & 0xFF] ^ (c >> 8);
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}
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return c ^ 0xFFFFFFFF;
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}
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} // namespace google_breakpad
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53
src/common/linux/crc32.h
Normal file
53
src/common/linux/crc32.h
Normal file
@ -0,0 +1,53 @@
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// Copyright 2014 Google Inc.
|
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// All rights reserved.
|
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//
|
||||
// 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.
|
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#ifndef COMMON_LINUX_CRC32_H_
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#define COMMON_LINUX_CRC32_H_
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#include <stdint.h>
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#include <string>
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||||
|
||||
namespace google_breakpad {
|
||||
|
||||
// Updates a CRC32 checksum with |len| bytes from |buf|. |initial| holds the
|
||||
// checksum result from the previous update; for the first call, it should be 0.
|
||||
uint32_t UpdateCrc32(uint32_t initial, const void* buf, size_t len);
|
||||
|
||||
// Computes a CRC32 checksum using |len| bytes from |buf|.
|
||||
inline uint32_t ComputeCrc32(const void* buf, size_t len) {
|
||||
return UpdateCrc32(0, buf, len);
|
||||
}
|
||||
inline uint32_t ComputeCrc32(const std::string& str) {
|
||||
return ComputeCrc32(str.c_str(), str.size());
|
||||
}
|
||||
|
||||
} // namespace google_breakpad
|
||||
|
||||
#endif // COMMON_LINUX_CRC32_H_
|
||||
@ -57,6 +57,8 @@
|
||||
#include "common/dwarf_cfi_to_module.h"
|
||||
#include "common/dwarf_cu_to_module.h"
|
||||
#include "common/dwarf_line_to_module.h"
|
||||
#include "common/linux/crc32.h"
|
||||
#include "common/linux/eintr_wrapper.h"
|
||||
#include "common/linux/elfutils.h"
|
||||
#include "common/linux/elfutils-inl.h"
|
||||
#include "common/linux/elf_symbols_to_module.h"
|
||||
@ -405,19 +407,19 @@ bool ElfEndianness(const typename ElfClass::Ehdr* elf_header,
|
||||
|
||||
// Read the .gnu_debuglink and get the debug file name. If anything goes
|
||||
// wrong, return an empty string.
|
||||
template<typename ElfClass>
|
||||
string ReadDebugLink(const char* debuglink,
|
||||
size_t debuglink_size,
|
||||
const size_t debuglink_size,
|
||||
const bool big_endian,
|
||||
const string& obj_file,
|
||||
const std::vector<string>& debug_dirs) {
|
||||
size_t debuglink_len = strlen(debuglink) + 5; // '\0' + CRC32.
|
||||
debuglink_len = 4 * ((debuglink_len + 3) / 4); // Round to nearest 4 bytes.
|
||||
size_t debuglink_len = strlen(debuglink) + 5; // Include '\0' + CRC32.
|
||||
debuglink_len = 4 * ((debuglink_len + 3) / 4); // Round up to 4 bytes.
|
||||
|
||||
// Sanity check.
|
||||
if (debuglink_len != debuglink_size) {
|
||||
fprintf(stderr, "Mismatched .gnu_debuglink string / section size: "
|
||||
"%zx %zx\n", debuglink_len, debuglink_size);
|
||||
return "";
|
||||
return string();
|
||||
}
|
||||
|
||||
bool found = false;
|
||||
@ -428,11 +430,40 @@ string ReadDebugLink(const char* debuglink,
|
||||
const string& debug_dir = *it;
|
||||
debuglink_path = debug_dir + "/" + debuglink;
|
||||
debuglink_fd = open(debuglink_path.c_str(), O_RDONLY);
|
||||
if (debuglink_fd >= 0) {
|
||||
if (debuglink_fd < 0)
|
||||
continue;
|
||||
|
||||
FDWrapper debuglink_fd_wrapper(debuglink_fd);
|
||||
|
||||
// The CRC is the last 4 bytes in |debuglink|.
|
||||
const dwarf2reader::Endianness endianness = big_endian ?
|
||||
dwarf2reader::ENDIANNESS_BIG : dwarf2reader::ENDIANNESS_LITTLE;
|
||||
dwarf2reader::ByteReader byte_reader(endianness);
|
||||
uint32_t expected_crc =
|
||||
byte_reader.ReadFourBytes(&debuglink[debuglink_size - 4]);
|
||||
|
||||
uint32_t actual_crc = 0;
|
||||
while (true) {
|
||||
const size_t kReadSize = 4096;
|
||||
char buf[kReadSize];
|
||||
ssize_t bytes_read = HANDLE_EINTR(read(debuglink_fd, &buf, kReadSize));
|
||||
if (bytes_read < 0) {
|
||||
fprintf(stderr, "Error reading debug ELF file %s.\n",
|
||||
debuglink_path.c_str());
|
||||
return string();
|
||||
}
|
||||
if (bytes_read == 0)
|
||||
break;
|
||||
actual_crc = google_breakpad::UpdateCrc32(actual_crc, buf, bytes_read);
|
||||
}
|
||||
if (actual_crc != expected_crc) {
|
||||
fprintf(stderr, "Error reading debug ELF file - CRC32 mismatch: %s\n",
|
||||
debuglink_path.c_str());
|
||||
continue;
|
||||
}
|
||||
found = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!found) {
|
||||
fprintf(stderr, "Failed to find debug ELF file for '%s' after trying:\n",
|
||||
@ -441,13 +472,9 @@ string ReadDebugLink(const char* debuglink,
|
||||
const string debug_dir = *it;
|
||||
fprintf(stderr, " %s/%s\n", debug_dir.c_str(), debuglink);
|
||||
}
|
||||
return "";
|
||||
return string();
|
||||
}
|
||||
|
||||
FDWrapper debuglink_fd_wrapper(debuglink_fd);
|
||||
// TODO(thestig) check the CRC-32 at the end of the .gnu_debuglink
|
||||
// section.
|
||||
|
||||
return debuglink_path;
|
||||
}
|
||||
|
||||
@ -657,10 +684,12 @@ bool LoadSymbols(const string& obj_file,
|
||||
const char* debuglink_contents =
|
||||
GetOffset<ElfClass, char>(elf_header,
|
||||
gnu_debuglink_section->sh_offset);
|
||||
string debuglink_file
|
||||
= ReadDebugLink<ElfClass>(debuglink_contents,
|
||||
string debuglink_file =
|
||||
ReadDebugLink(debuglink_contents,
|
||||
gnu_debuglink_section->sh_size,
|
||||
obj_file, info->debug_dirs());
|
||||
big_endian,
|
||||
obj_file,
|
||||
info->debug_dirs());
|
||||
info->set_debuglink_file(debuglink_file);
|
||||
} else {
|
||||
fprintf(stderr, ".gnu_debuglink section found in '%s', "
|
||||
|
||||
Loading…
Reference in New Issue
Block a user