crashpad/compat/BUILD.gn
Joshua Peraza 3e065b11d0 linux, mac: disable cfi-icall for cross-dso calls
CFI attempts to verify that the dynamic type of a function object
matches the static type of the function pointer used to call it.

https://clang.llvm.org/docs/ControlFlowIntegrity.html#indirect-function-call-checking

However, the analyzer does not have enough information to check
cross-dso calls. In these instances, CFI crashes upon calling the
function with an error like:

pthread_create_linux.cc:60:16: runtime error:
control flow integrity check for type
'int (unsigned long *, const pthread_attr_t *, void *(*)(void *), void *)'
failed during indirect function call
(/lib/x86_64-linux-gnu/libpthread.so.0+0x9200):
note: (unknown) defined here pthread_create_linux.cc:60:16:
note: check failed in crashpad_handler,
destination function located in /lib/x86_64-linux-gnu/libpthread.so.0

Change-Id: Ib29dabfe714f2ee9cc06a5d17e6899ff81a06df4
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2339332
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2020-09-10 22:15:29 +00:00

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# Copyright 2015 The Crashpad Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import("../build/crashpad_buildconfig.gni")
if (crashpad_is_in_chromium) {
# Prevent Chromium source assignment filters from being inherited.
set_sources_assignment_filter([])
}
config("compat_config") {
include_dirs = []
if (crashpad_is_mac || crashpad_is_ios) {
include_dirs += [ "mac" ]
} else {
include_dirs += [ "non_mac" ]
}
if (crashpad_is_ios) {
include_dirs += [ "ios" ]
}
if (crashpad_is_linux || crashpad_is_android) {
include_dirs += [ "linux" ]
}
if (crashpad_is_android) {
include_dirs += [ "android" ]
}
if (crashpad_is_win) {
include_dirs += [ "win" ]
} else {
include_dirs += [ "non_win" ]
}
if (!crashpad_is_linux && !crashpad_is_android && !crashpad_is_fuchsia) {
include_dirs += [ "non_elf" ]
}
}
template("compat_target") {
if (crashpad_is_mac || crashpad_is_ios) {
# There are no sources to compile, which doesnt mix will with a
# static_library.
group(target_name) {
forward_variables_from(invoker, "*")
not_needed([ "configs" ])
}
} else {
static_library(target_name) {
forward_variables_from(invoker, "*", [ "configs" ])
if (!defined(configs)) {
configs = []
}
if (defined(invoker.configs)) {
configs += invoker.configs
}
}
}
}
compat_target("compat") {
sources = []
if (crashpad_is_mac || crashpad_is_ios) {
sources += [
"mac/Availability.h",
"mac/AvailabilityVersions.h",
"mac/kern/exc_resource.h",
"mac/mach-o/loader.h",
"mac/mach/i386/thread_state.h",
"mac/mach/mach.h",
"mac/sys/resource.h",
]
} else {
sources += [
"non_mac/mach-o/loader.h",
"non_mac/mach/mach.h",
"non_mac/mach/machine.h",
"non_mac/mach/vm_prot.h",
]
}
if (crashpad_is_ios) {
sources += [
"ios/mach/exc.defs",
"ios/mach/mach_exc.defs",
"ios/mach/mach_types.defs",
"ios/mach/machine/machine_types.defs",
"ios/mach/std_types.defs",
]
}
if (crashpad_is_linux || crashpad_is_android) {
sources += [
"linux/signal.h",
"linux/sys/mman.h",
"linux/sys/mman_memfd_create.cc",
"linux/sys/ptrace.h",
"linux/sys/user.h",
]
}
if (crashpad_is_android) {
sources += [
"android/dlfcn_internal.cc",
"android/dlfcn_internal.h",
"android/elf.h",
"android/linux/elf.h",
"android/linux/prctl.h",
"android/linux/ptrace.h",
"android/sched.h",
"android/sys/epoll.cc",
"android/sys/epoll.h",
"android/sys/mman.h",
"android/sys/mman_mmap.cc",
"android/sys/syscall.h",
"android/sys/user.h",
]
}
if (crashpad_is_win) {
sources += [
"win/getopt.h",
"win/strings.cc",
"win/strings.h",
"win/sys/types.h",
"win/time.cc",
"win/time.h",
"win/winbase.h",
"win/winnt.h",
"win/winternl.h",
]
} else {
sources += [
"non_win/dbghelp.h",
"non_win/minwinbase.h",
"non_win/timezoneapi.h",
"non_win/verrsrc.h",
"non_win/windows.h",
"non_win/winnt.h",
]
}
if (!crashpad_is_linux && !crashpad_is_android && !crashpad_is_fuchsia) {
sources += [ "non_elf/elf.h" ]
}
public_configs = [
":compat_config",
"..:crashpad_config",
]
deps = [ "../util:no_cfi_icall" ]
if (!crashpad_is_mac) {
deps += [ "../third_party/xnu" ]
}
if (crashpad_is_win) {
deps += [ "../third_party/getopt" ]
}
if (!crashpad_is_linux && !crashpad_is_android && !crashpad_is_fuchsia) {
deps += [ "../third_party/glibc" ]
}
if (crashpad_is_in_fuchsia) {
configs = [ "//build/config:Wno-conversion" ]
}
}