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https://github.com/LadybirdBrowser/ladybird.git
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7f60090c43
Tests: Improve munmap-test We now Unmap page aligned and check if the regions were really unmappped etc. Tests: Cleanup Munmap-test added a cleanup and removed a useless cast
126 lines
4.7 KiB
C++
126 lines
4.7 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 unmaping\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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