16 Commits

Author SHA1 Message Date
Mark Mentovai
50ed179e9a Use BUILDFLAG for OS checking
Use BUILDFLAG(IS_*) instead of defined(OS_*).

This was generated mostly mechnically by performing the following steps:
 - sed -i '' -E -e 's/defined\(OS_/BUILDFLAG(IS_/g' \
                -e 's%([ !])OS_([A-Z]+)%\1BUILDFLAG(IS_\2)%g' \
       $(git grep -l 'OS_'
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - sed -i '' -e 's/#ifdef BUILDFLAG(/#if BUILDFLAG(/' \
       $(git grep -l '#ifdef BUILDFLAG('
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - gsed -i -z -E -e \
       's%(.*)#include "%\1#include "build/buildflag.h"\n#include "%' \
       $(git grep -l 'BUILDFLAG(IS_'
         '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm')
 - Spot checks to move #include "build/buildflag.h" to the correct parts
   of files.
 - sed -i '' -E -e \
       's%^(#include "build/buildflag.h")$%#include "build/build_config.h"\n\1%' \
       $(grep -L '^#include "build/build_config.h"$'
         $(git grep -l 'BUILDFLAG(IS_'
           '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm'))
 - Add “clang-format off” around tool usage messages.
 - git cl format
 - Update mini_chromium to 85ba51f98278 (intermediate step).
   TESTING ONLY).
 - for f in $(git grep -l '^#include "build/buildflag.h"$'
              '**/*.c' '**/*.cc' '**/*.h' '**/*.m' '**/*.mm'); do \
       grep -v '^#include "build/buildflag.h"$' "${f}" > /tmp/z; \
       cp /tmp/z "${f}"; done
 - git cl format
 - Update mini_chromium to 735143774c5f (intermediate step).
 - Update mini_chromium to f41420eb45fa (as checked in).
 - Update mini_chromium to 6e2f204b4ae1 (as checked in).

For ease of review and inspection, each of these steps is uploaded as a
new patch set in a review series.

This includes an update of mini_chromium to 6e2f204b4ae1:

f41420eb45fa Use BUILDFLAG for OS checking
6e2f204b4ae1 Include what you use: string_util.h uses build_config.h

Bug: chromium:1234043
Change-Id: Ieef86186f094c64e59b853729737e36982f8cf69
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3400258
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
2022-01-19 20:21:19 +00:00
Peter Collingbourne
0d26b02c37 Reraise signals via rt_tgsigqueueinfo(2) on Linux (try 2).
Previously we would rely on implicit re-raising to deliver signals to
the underlying handler on POSIX systems if the signal is detected as
being re-raisable via WillSignalReraiseAutonomously(). This detection
mechanism is imperfect, as it will misclassify signals delivered as
a result of kill(2) when passing a signal number usually used for
synchronous signals, but now also asynchronous MTE tag check faults,
which are delivered as SIGSEGV signals on Linux. As a result, these
signals would not be re-raised and therefore would be discarded.

Although we could, for example, teach WillSignalReraiseAutonomously()
about MTE faults, the signal would still be re-raised via raise(3)
and therefore we would lose the information in siginfo.

We can avoid discarding these signals on Linux while at the
same time preserving the siginfo by making use of the syscall
rt_tgsigqueueinfo(2) which delivers a signal together with a
user-provided siginfo. The problem still exists on non-Linux POSIX
systems because this syscall is Linux-specific.

With kernel versions prior to 3.9, the kernel will reject the
rt_tgsigqueueinfo() syscall with EPERM. If that happens, follow
the non-Linux code path.

Change-Id: Ia410fbd651a756945c9402e361edfd5c520453d6
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3300991
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Peter Collingbourne <pcc@chromium.org>
2021-11-25 00:33:31 +00:00
Peter Collingbourne
c537245de8 Revert "Reraise signals via rt_tgsigqueueinfo(2) on Linux."
Causes test failures on older versions of Android (e.g. Marshmallow).

Also reverts follow-up CL "Fix dead-code warning in util/posix/signals.cc".

This reverts commits ab9a87fb5463e5d1579e16bacb1f79d0dd71119b and
04431eccfe878570b1c74a5b376d96b4c9c7e0e8.

Bug: 1272877
Change-Id: Id9ef420516c932147b6c8b67d9f4daf9d31d9b03
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3300986
Reviewed-by: Peter Boström <pbos@chromium.org>
Commit-Queue: Peter Collingbourne <pcc@chromium.org>
2021-11-24 22:09:30 +00:00
Peter Boström
ab9a87fb54 Fix dead-code warning in util/posix/signals.cc
This unblocks a roll of crashpad into chromium.

Bug: None
Change-Id: I54fc53e0b53b8a7c7ff8e28c4657b46587bfad8d
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3287226
Commit-Queue: Peter Boström <pbos@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2021-11-17 00:57:24 +00:00
Peter Collingbourne
04431eccfe Reraise signals via rt_tgsigqueueinfo(2) on Linux.
Previously we would rely on implicit re-raising to deliver signals to
the underlying handler on POSIX systems if the signal is detected as
being re-raisable via WillSignalReraiseAutonomously(). This detection
mechanism is imperfect, as it will misclassify signals delivered as
a result of kill(2) when passing a signal number usually used for
synchronous signals, but now also asynchronous MTE tag check faults,
which are delivered as SIGSEGV signals on Linux. As a result, these
signals would not be re-raised and therefore would be discarded.

Although we could, for example, teach WillSignalReraiseAutonomously()
about MTE faults, the signal would still be re-raised via raise(3)
and therefore we would lose the information in siginfo.

We can avoid discarding these signals on Linux while at the
same time preserving the siginfo by making use of the syscall
rt_tgsigqueueinfo(2) which delivers a signal together with a
user-provided siginfo. The problem still exists on non-Linux POSIX
systems because this syscall is Linux-specific.

Change-Id: I6df58d9371e29f75e19b4f899b723d4047f12936
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3278691
Commit-Queue: Peter Collingbourne <pcc@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2021-11-16 02:45:23 +00:00
Lei Zhang
d8f60c8112 Swap from base/stl_util.h to cxx17_backports.h.
Chromium moved base::size() to base/cxx17_backports.h, so do the same in
mini_chromium and update the users in Crashpad.

Roll mini_chromium to 2f06f83f to make the new base header available.

Bug: chromium:1210983
Change-Id: Ie3dc4c189dcdfcac030b95fe285f94abb29a27bf
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2917779
Commit-Queue: Lei Zhang <thestig@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2021-05-25 21:44:52 +00:00
Mark Mentovai
e0d8a0aa01 mac-arm64: Cope with signal handling quirks
On x86_64, it’s impossible for a signal handler distinguish between
SIGBUS caused synchronously by a hardware fault and SIGBUS raised
asynchronously by software. This remains true on arm64, and is expanded
to include both SIGILL and SIGSEGV.

Bug: crashpad:345
Test: crashpad_util_test Signals.Raise_HandlerReraisesTo*
Change-Id: I181ea35121048dc0c666e2346340e698220ca650
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2386463
Commit-Queue: Mark Mentovai <mark@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
2020-09-04 03:21:35 +00:00
Sean McAllister
3965bc7d78 Refactor OS_LINUX usage for coming LaCrOs update.
We're working to decouple ChromeOS and Linux builds of Chrome.

Currently OS_CHROMEOS sets OS_LINUX, so we need to refactor
current OS_LINUX usage to make this explicit.

More information can be found at go/cros_is_linux_os_linux

BUG=chromium:1110266
TEST=manual build

Change-Id: Ie765da1ab6a0bf0286538ae1df3697abaa29aeaa
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2391116
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
2020-09-03 19:12:04 +00:00
Avi Drissman
4ae896bad0 Migrate to OS_MAC and OS_APPLE in Crashpad
This migrates:

 defined(OS_MACOSX) -> defined(OS_APPLE)
 defined(OS_MACOSX) && !defined(OS_IOS) -> defined(OS_MAC)
 !defined(OS_MACOSX) || defined(OS_IOS) -> !defined(OS_MAC)

Bug: chromium:1105907
Change-Id: I1b4abc19bbbe8df90e9c6e64cd29324b40b8ab71
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2321777
Commit-Queue: Avi Drissman <avi@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2020-07-28 02:35:48 +00:00
Hans Wennborg
032f1aecc2 Include-what-you-use related to logging.h
Add direct includes for things provided transitively by logging.h
(or by other headers including logging.h).

This is in preparation for cleaning up unnecessary includes of
logging.h in header files (so if something depends on logging.h,
it needs include it explicitly), and for when Chromium's logging.h
no longer includes check.h, check_op.h, and notreached.h.

DEPS is also updated to roll mini_chromium to ae14a14ab4 which
includes these new header files.

Bug: chromium:1031540
Change-Id: I36f646d0a93854989dc602d0dc7139dd7a7b8621
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2250251
Commit-Queue: Hans Wennborg <hans@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2020-06-18 13:51:20 +00:00
Joshua Peraza
fc44a3747c linux: Allow configuring unhandled signals
Change-Id: I621555f892a3064c5cba09120309bc900da237f9
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/1793563
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
2019-09-10 17:57:21 +00:00
Mark Mentovai
cc166d71f4 Use base::size where appropriate, and ArraySize elsewhere
This is a follow-up to c8a016b99d97, following the post-landing
discussion at
https://chromium-review.googlesource.com/c/crashpad/crashpad/+/1393921/5#message-2058541d8c4505d20a990ab7734cd758e437a5f7

base::size, and std::size that will eventually replace it when C++17 is
assured, does not allow the size of non-static data members to be taken
in constant expression context. The remaining uses of ArraySize are in:

minidump/minidump_exception_writer.cc (×1)
minidump/minidump_system_info_writer.cc (×2, also uses base::size)
snapshot/cpu_context.cc (×4, also uses base::size)
util/misc/arraysize_test.cc (×10, of course)

The first of these occurs when initializing a constexpr variable. All
others are in expressions used with static_assert.

Includes:
Update mini_chromium to 737433ebade4d446643c6c07daae02a67e8deccao

f701716d9546 Add Windows ARM64 build target to mini_chromium
87a95a3d6ac2 Remove the arraysize macro
1f7255ead1f7 Placate MSVC in areas of base::size usage
737433ebade4 Add cast

Bug: chromium:837308
Change-Id: I6a5162654461b1bdd9b7b6864d0d71a734bcde19
Reviewed-on: https://chromium-review.googlesource.com/c/1396108
Commit-Queue: Mark Mentovai <mark@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2019-01-04 22:42:57 +00:00
Avi Drissman
c8a016b99d Remove base's arraysize from Crashpad.
BUG=837308
R=mark@chromium.org

Change-Id: Ibecbfc7bc2d61ee54bc1114e4b20978adbc77db2
Reviewed-on: https://chromium-review.googlesource.com/c/1393921
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
2019-01-03 19:44:15 +00:00
Joshua Peraza
9b2ba587f6 linux: Add ExceptionHandlerServer and ExceptionHandlerClient
Bug: crashpad:30
Change-Id: I60874a26ccb281144f870df2b4d16c6970a39f6b
Reviewed-on: https://chromium-review.googlesource.com/772824
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2017-12-19 20:11:52 +00:00
Mark Mentovai
6dac7ecdf5 Use constexpr at function scope
This is essentially based on a search for “^ *const [^*&]*=[^(]*$”

Change-Id: Id571119d0b9a64c6f387eccd51cea7c9eb530e13
Reviewed-on: https://chromium-review.googlesource.com/585555
Reviewed-by: Leonard Mosescu <mosescu@chromium.org>
2017-07-29 00:50:40 +00:00
Mark Mentovai
bf2c5155d2 Add Signals, utilities for signal handling
Use these utilities for signal handling in crashpad_handler

BUG=crashpad:30
TEST=crashpad_util_test Signals.*

Change-Id: I6c9a1de35c4a81b58d77768c4753bdba5ebea4df
Reviewed-on: https://chromium-review.googlesource.com/446917
Commit-Queue: Mark Mentovai <mark@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
2017-03-01 17:25:54 +00:00