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https://github.com/LadybirdBrowser/ladybird.git
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fd0dbd1ebf
With the goal of centralizing all tests in the system, this is a first step to establish a Tests sub-tree. It will contain all of the unit tests and test harnesses for the various components in the system.
107 lines
3.5 KiB
C++
107 lines
3.5 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Types.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <unistd.h>
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int main()
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{
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{
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printf("Testing full unnmap\n");
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auto* map1 = mmap(nullptr, 2 * PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, 0, 0);
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if (map1 == MAP_FAILED) {
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perror("mmap 1");
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return 1;
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}
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auto* map2 = mmap((void*)((FlatPtr)map1 + 2 * PAGE_SIZE), 2 * PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, 0, 0);
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if (map2 == MAP_FAILED) {
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perror("mmap 2");
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return 1;
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}
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((u32*)map1)[0] = 0x41414141;
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((u32*)map1)[PAGE_SIZE / sizeof(u32)] = 0x42424242;
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((u32*)map2)[0] = 0xbeefbeef;
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((u32*)map2)[PAGE_SIZE / sizeof(u32)] = 0xc0dec0de;
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if (((u32*)map1)[0] != 0x41414141 || ((u32*)map1)[PAGE_SIZE / sizeof(u32)] != 0x42424242
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|| ((u32*)map2)[0] != 0xbeefbeef || ((u32*)map2)[PAGE_SIZE / sizeof(u32)] != 0xc0dec0de) {
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perror("write");
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return 1;
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}
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int res = munmap(map1, 4 * PAGE_SIZE);
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if (res < 0) {
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perror("unmap");
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return 1;
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}
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}
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{
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printf("Testing partial unmapping\n");
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auto* map1 = mmap(nullptr, 2 * PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, 0, 0);
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if (map1 == MAP_FAILED) {
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perror("mmap 1");
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return 1;
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}
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auto* map2 = mmap((void*)((FlatPtr)map1 + 2 * PAGE_SIZE), 2 * PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, 0, 0);
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if (map2 == MAP_FAILED) {
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perror("mmap 2");
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return 1;
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}
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((u32*)map1)[0] = 0x41414141;
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((u32*)map1)[PAGE_SIZE / sizeof(u32)] = 0x42424242;
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((u32*)map2)[0] = 0xbeefbeef;
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((u32*)map2)[PAGE_SIZE / sizeof(u32)] = 0xc0dec0de;
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if (((u32*)map1)[0] != 0x41414141 || ((u32*)map1)[PAGE_SIZE / sizeof(u32)] != 0x42424242
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|| ((u32*)map2)[0] != 0xbeefbeef || ((u32*)map2)[PAGE_SIZE / sizeof(u32)] != 0xc0dec0de) {
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perror("write");
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return 1;
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}
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int res = munmap((void*)((FlatPtr)map1 + PAGE_SIZE), 2 * PAGE_SIZE);
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if (res < 0) {
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perror("unmap");
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return 1;
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}
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auto* map3 = mmap((void*)((FlatPtr)map1 + PAGE_SIZE), PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, 0, 0);
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if (map3 == MAP_FAILED) {
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perror("remap 1");
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return 1;
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}
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auto* map4 = mmap(map2, PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, 0, 0);
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if (map4 == MAP_FAILED) {
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perror("remap 2");
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return 1;
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}
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((u32*)map3)[0] = 0x13371337;
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((u32*)map4)[0] = 0x1b1b1b1b;
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if (((u32*)map1)[0] != 0x41414141 || ((u32*)map2)[PAGE_SIZE / sizeof(u32)] != 0xc0dec0de
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|| ((u32*)map3)[0] != 0x13371337 || ((u32*)map4)[0] != 0x1b1b1b1b
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|| ((u32*)map1)[PAGE_SIZE / sizeof(int)] != ((u32*)map3)[0] || ((u32*)map2)[0] != ((u32*)map4)[0]) {
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perror("read at old map and write at remap");
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return 1;
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}
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res = munmap(map1, PAGE_SIZE * 4);
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if (res < 0) {
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perror("cleanup");
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return 1;
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}
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}
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printf("PASS\n");
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return 0;
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}
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