11 Commits

Author SHA1 Message Date
Mark Mentovai
8f0636288a Use constexpr at namespace scope
This is essentially based on a search for “^const .*=”.

Change-Id: I9332c1f0cf7c891ba1ae373dc537f700f9a1d956
Reviewed-on: https://chromium-review.googlesource.com/585452
Reviewed-by: Leonard Mosescu <mosescu@chromium.org>
2017-07-29 01:06:52 +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
741c9cc51e mac: Deal with bootstrap_look_up() race encountered on 10.12.1
bootstrap_look_up() “successfully” returns MACH_PORT_DEAD about half of
the time on 10.12.1 16B2657 (xnu-3789.21.4). Replace that with
MACH_PORT_NULL in the BootstrapLookUp() wrapper that all callers are
already routed through.

BUG=crashpad:139
TEST=crashpad_util_test MachExtensions.BootstrapCheckInAndLookUp

Change-Id: I9a39b709add5ca7e64bb5b970ed6ba3fdfd1d47a
Reviewed-on: https://chromium-review.googlesource.com/409671
Reviewed-by: Robert Sesek <rsesek@chromium.org>
2016-11-09 22:06:23 +00:00
Mark Mentovai
bb13efbda7 Add and use scoped-right-returning wrappers for Mach bootstrap routines
This wraps bootstrap_check_in() in BootstrapCheckIn(), and
bootstrap_look_up() in BootstrapLookUp(). The wrappers make it more
difficult to accidentally leak a returned right. They’re easier to use,
encapsulating common error checking and logging, simplifying all call
sites.

TEST=crashpad_util_test MachExtensions.BootstrapCheckInAndLookUp
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/1383283003 .
2015-10-05 17:07:15 -04:00
Mark Mentovai
cd85c9f700 mac: Add CrashpadClient::UseSystemDefaultHandler()
Chrome’s relauncher process needs a way to sever ties with the
crashpad_handler instance running from the disk image in order to cause
that instance to exit so that the disk image may be unmounted. This new
function is otherwise not thought to be interesting, and its use is not
recommended.

This comes with a small refactoring to create a
SystemCrashReporterHandler() function, and a fix for a minor port leak
in CrashReportExceptionHandler::CatchMachException().

BUG=chromium:538373
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/1375573005 .
2015-10-02 14:40:38 -04:00
Mark Mentovai
9086d25ce8 Don’t trigger EXC_CORPSE_NOTIFY on OS X 10.11
CrashReportExceptionHandler::CatchMachException() must always set a
valid new_state. Failing to do so appears to trigger corpse generation
on OS X 10.11. This is addressed by calling ExcServerCopyState().
Previously, this was not done for exceptions forwarded to the user
ReportCrash, under the apparent mistaken assumption that ReportCrash
would do it. However, ReportCrash is given copies of out-parameters like
new_state to explicitly prevent it from influencing Crashpad’s returned
state.

ExcServerSuccessfulReturnValue() must not return MACH_RCV_PORT_DIED for
an EXC_CRASH handler on OS X 10.11. This appears to trigger corpse
generation. This is addressed by always returning KERN_SUCCESS from
EXC_CRASH handlers on OS X 10.11.

This also adds generic EXC_CORPSE_NOTIFY support throughout Crashpad.
The crashpad_handler does not listen for this exception type, but it is
now possible to work with this exception type using tools like
exception_port_tool and catch_exception_tool.

BUG=crashpad:48
TEST=Crashes handled by crashpad_handler do not result in the generation
     of reports in the root /Library/Logs/DiagnosticReports.

R=kerrnel@chromium.org, rsesek@chromium.org

Review URL: https://codereview.chromium.org/1305893010 .
2015-09-04 14:29:12 -04:00
Mark Mentovai
a02f721637 Add NewMachPort() and its test, and switch call sites to use it.
There were many call sites that wasted a few lines on
mach_port_allocate() and sticking the result into a scoper. I was about
to add three more, so I took the opportunity to simplify things.

TEST=util_test
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/809103002
2014-12-17 15:10:38 -05:00
Mark Mentovai
4d35ffa80e Use more-specific typedefs for send rights to task, thread, and
exception handler ports.

task_t, thread_t, and exception_handler_t are typedefs for mach_port_t.
They are more descriptive than mach_port_t, and are already in use in
exc_server_variants.

TEST=util_test
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/577293002
2014-09-18 13:53:43 -04:00
Mark Mentovai
850ec0657d Drop 10.5 support.
TEST=util_test
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/575823002
2014-09-16 11:55:55 -04:00
Mark Mentovai
e49510ab7c Add SymbolicConstantsMach and its test.
TEST=util_test SymbolicConstantsMach.*
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/563383002
2014-09-16 11:00:51 -04:00
Mark Mentovai
1e7cdb30a0 Add exc_client_variants (UniversalExceptionRaise()) and its test.
This also puts kMachExceptionCodes into mach_extensions.h, because a
form of MACH_EXCEPTION_CODES that’s the right type
(exception_behavior_t) has now shown its use in more than one file.

TEST=util_test ExcClientVariants.UniversalExceptionRaise
R=rsesek@chromium.org

Review URL: https://codereview.chromium.org/567283002
2014-09-16 09:48:01 -04:00