f87936fcfa
Provide a way to forward sandbox decisions and syscalls interceptions to the profiler, with child-side stack in the reports. Introduces a new SandboxProfilerEmitter thread that will be able to deal with what cannot be done in the context of a signal handler. Child-side syscalls interceptions with stacks requires a bit of care because of the signal context it is running under. Taking a stack is safe in that context but dealing with the profiler is not, thus relying on the MPSCQueue data structure: - when in SIGSYS because a syscall has been intercepted, take a stack - forward the syscall informations plus the stack within the MPSCQueue - SandoxProfilerEmitter can then read from the queue and perform the heavy work with the profiler Differential Revision: https://phabricator.services.mozilla.com/D207736
23 lines
833 B
C++
23 lines
833 B
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "SandboxProfiler.h"
|
|
|
|
namespace mozilla {
|
|
|
|
/* static */
|
|
void SandboxProfiler::ReportRequest(const void* top, uint64_t aId,
|
|
const char* aOp, int aFlags,
|
|
const char* aPath, const char* aPath2,
|
|
pid_t aPid) {
|
|
/*
|
|
* Just an empty no op for gtest, otherwise we end up with linkage failure,
|
|
* and adding the real SandboxProfiler.cpp to the gtest linkage breaks
|
|
* because we want to keep separated symbols for uprofiler/uprofiler_initted
|
|
* and gtest links all together.
|
|
* */
|
|
}
|
|
|
|
} // namespace mozilla
|