mirror of
https://github.com/google/sandboxed-api.git
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79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
// Copyright 2019 Google LLC. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <sched.h>
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#include <signal.h>
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#include <unistd.h>
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#include <cinttypes>
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constexpr int kProcesses = 512;
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constexpr int kThreads = 1;
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constexpr int kSenders = 1;
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constexpr int kStackSize = 4096;
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pid_t g_pids[kProcesses];
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uint8_t g_stacks[kThreads][kStackSize] __attribute__((aligned(4096)));
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constexpr int kSignals[] = {
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SIGPROF,
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};
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void SignalHandler(int) {}
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int ChildFunc(void*) {
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for (;;) {
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sleep(10);
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}
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}
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int main() {
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for (int i = 0; i < kProcesses; ++i) {
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int p[2];
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char c;
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pipe(p);
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g_pids[i] = fork();
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if (g_pids[i] == 0) {
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for (int sig : kSignals) {
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signal(sig, SignalHandler);
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}
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for (int j = 0; j < kThreads; ++j) {
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int flags = CLONE_FILES | CLONE_FS | CLONE_IO | CLONE_PARENT |
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CLONE_SIGHAND | CLONE_THREAD | CLONE_VM;
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clone(&ChildFunc, g_stacks[j + 1], flags, nullptr, nullptr, nullptr,
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nullptr);
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}
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close(p[0]);
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write(p[1], &c, 1);
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close(p[1]);
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for (;;) {
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sleep(10);
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}
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}
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read(p[0], &c, 1);
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}
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for (int i = 0; i < kSenders; ++i) {
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if (fork() == 0) {
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break;
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}
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}
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for (;;) {
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for (int sig : kSignals) {
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for (int pid : g_pids) {
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kill(pid, sig);
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}
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}
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}
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}
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