test_utils.cc revision 617bbc23d2cf4cba5881ec54607926393f7245c7
18155d081dc729d407f8ff9e95b4ef91ae14281ceMike Frysinger// Copyright (c) 2012 The Chromium OS Authors. All rights reserved. 249fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com// Use of this source code is governed by a BSD-style license that can be 349fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com// found in the LICENSE file. 449fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com 5c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com#include "update_engine/test_utils.h" 609e56d64202d2148b95008c5bd18cf719ec0f40cAndrew de los Reyes 749fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com#include <sys/stat.h> 849fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com#include <sys/types.h> 9c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com#include <errno.h> 1049fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com#include <stdio.h> 1149fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com#include <stdlib.h> 1249fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com#include <unistd.h> 1309e56d64202d2148b95008c5bd18cf719ec0f40cAndrew de los Reyes 14c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com#include <set> 1549fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com#include <string> 1649fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com#include <vector> 1709e56d64202d2148b95008c5bd18cf719ec0f40cAndrew de los Reyes 18c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com#include "base/string_util.h" 198155d081dc729d407f8ff9e95b4ef91ae14281ceMike Frysinger#include <base/stringprintf.h> 20790e62e2d8114647b0785574bea361cf931c482bChris Masone#include "base/logging.h" 2149fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com#include "update_engine/file_writer.h" 22c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com#include "update_engine/filesystem_iterator.h" 23c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com#include "update_engine/utils.h" 2449fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com 25c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.comusing std::set; 2649fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.comusing std::string; 2749fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.comusing std::vector; 2849fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com 2949fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.comnamespace chromeos_update_engine { 3049fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com 31c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.combool WriteFileVector(const std::string& path, const std::vector<char>& data) { 32970bb28905b44bf9f2cb986bb412ecda1095b0b1Andrew de los Reyes return utils::WriteFile(path.c_str(), &data[0], data.size()); 33c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com} 34c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 35c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.combool WriteFileString(const std::string& path, const std::string& data) { 36970bb28905b44bf9f2cb986bb412ecda1095b0b1Andrew de los Reyes return utils::WriteFile(path.c_str(), data.data(), data.size()); 37c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com} 38c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 39c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.comstd::string Readlink(const std::string& path) { 40c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com vector<char> buf(PATH_MAX + 1); 41c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com ssize_t r = readlink(path.c_str(), &buf[0], buf.size()); 42c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com if (r < 0) 43c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com return ""; 44c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com CHECK_LT(r, static_cast<ssize_t>(buf.size())); 45c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com buf.resize(r); 46c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com string ret; 47c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com ret.insert(ret.begin(), buf.begin(), buf.end()); 48c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com return ret; 49c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com} 50c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 5149fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.comstd::vector<char> GzipCompressData(const std::vector<char>& data) { 5249fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com const char fname[] = "/tmp/GzipCompressDataTemp"; 53c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com if (!WriteFileVector(fname, data)) { 5408c4e27baaa7b40732b99642e1f21bf889d022efAndrew de los Reyes EXPECT_EQ(0, system((string("rm ") + fname).c_str())); 5549fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com return vector<char>(); 5649fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com } 5708c4e27baaa7b40732b99642e1f21bf889d022efAndrew de los Reyes EXPECT_EQ(0, system((string("cat ") + fname + "|gzip>" + 5808c4e27baaa7b40732b99642e1f21bf889d022efAndrew de los Reyes fname + ".gz").c_str())); 5908c4e27baaa7b40732b99642e1f21bf889d022efAndrew de los Reyes EXPECT_EQ(0, system((string("rm ") + fname).c_str())); 60c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com vector<char> ret; 61c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_TRUE(utils::ReadFile(string(fname) + ".gz", &ret)); 6208c4e27baaa7b40732b99642e1f21bf889d022efAndrew de los Reyes EXPECT_EQ(0, system((string("rm ") + fname + ".gz").c_str())); 6349fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com return ret; 6449fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com} 6549fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com 66c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.comvector<char> GenerateSampleMbr() { 67c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com // This is the actual MBR from my dev machine. Partition 1 (the first) 68c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com // is currently marked bootable 69c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com char mbr[512] = { 70c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xeb, 0x48, 0x90, 0x10, 0x8e, 0xd0, 0xbc, 0x00, 71c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xb0, 0xb8, 0x00, 0x00, 0x8e, 0xd8, 0x8e, 0xc0, 72c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xfb, 0xbe, 0x00, 0x7c, 0xbf, 0x00, 0x06, 0xb9, 73c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x02, 0xf3, 0xa4, 0xea, 0x21, 0x06, 0x00, 74c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0xbe, 0xbe, 0x07, 0x38, 0x04, 0x75, 0x0b, 75c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x83, 0xc6, 0x10, 0x81, 0xfe, 0xfe, 0x07, 0x75, 76c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xf3, 0xeb, 0x16, 0xb4, 0x02, 0xb0, 0x01, 0xbb, 77c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x7c, 0xb2, 0x80, 0x8a, 0x74, 0x03, 0x02, 78c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xff, 0x00, 0x00, 0x20, 0x01, 0x00, 0x00, 0x00, 79c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x02, 0xfa, 0x90, 0x90, 0xf6, 0xc2, 0x80, 80c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x75, 0x02, 0xb2, 0x80, 0xea, 0x59, 0x7c, 0x00, 81c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x31, 0xc0, 0x8e, 0xd8, 0x8e, 0xd0, 0xbc, 82c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x20, 0xfb, 0xa0, 0x40, 0x7c, 0x3c, 0xff, 83c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x74, 0x02, 0x88, 0xc2, 0x52, 0xbe, 0x7f, 0x7d, 84c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xe8, 0x34, 0x01, 0xf6, 0xc2, 0x80, 0x74, 0x54, 85c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xb4, 0x41, 0xbb, 0xaa, 0x55, 0xcd, 0x13, 0x5a, 86c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x52, 0x72, 0x49, 0x81, 0xfb, 0x55, 0xaa, 0x75, 87c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x43, 0xa0, 0x41, 0x7c, 0x84, 0xc0, 0x75, 0x05, 88c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x83, 0xe1, 0x01, 0x74, 0x37, 0x66, 0x8b, 0x4c, 89c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x10, 0xbe, 0x05, 0x7c, 0xc6, 0x44, 0xff, 0x01, 90c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x66, 0x8b, 0x1e, 0x44, 0x7c, 0xc7, 0x04, 0x10, 91c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0xc7, 0x44, 0x02, 0x01, 0x00, 0x66, 0x89, 92c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x5c, 0x08, 0xc7, 0x44, 0x06, 0x00, 0x70, 0x66, 93c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x31, 0xc0, 0x89, 0x44, 0x04, 0x66, 0x89, 0x44, 94c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x0c, 0xb4, 0x42, 0xcd, 0x13, 0x72, 0x05, 0xbb, 95c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x70, 0xeb, 0x7d, 0xb4, 0x08, 0xcd, 0x13, 96c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x73, 0x0a, 0xf6, 0xc2, 0x80, 0x0f, 0x84, 0xea, 97c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0xe9, 0x8d, 0x00, 0xbe, 0x05, 0x7c, 0xc6, 98c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x44, 0xff, 0x00, 0x66, 0x31, 0xc0, 0x88, 0xf0, 99c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x40, 0x66, 0x89, 0x44, 0x04, 0x31, 0xd2, 0x88, 100c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xca, 0xc1, 0xe2, 0x02, 0x88, 0xe8, 0x88, 0xf4, 101c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x40, 0x89, 0x44, 0x08, 0x31, 0xc0, 0x88, 0xd0, 102c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xc0, 0xe8, 0x02, 0x66, 0x89, 0x04, 0x66, 0xa1, 103c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x44, 0x7c, 0x66, 0x31, 0xd2, 0x66, 0xf7, 0x34, 104c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x88, 0x54, 0x0a, 0x66, 0x31, 0xd2, 0x66, 0xf7, 105c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x74, 0x04, 0x88, 0x54, 0x0b, 0x89, 0x44, 0x0c, 106c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x3b, 0x44, 0x08, 0x7d, 0x3c, 0x8a, 0x54, 0x0d, 107c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xc0, 0xe2, 0x06, 0x8a, 0x4c, 0x0a, 0xfe, 0xc1, 108c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x08, 0xd1, 0x8a, 0x6c, 0x0c, 0x5a, 0x8a, 0x74, 109c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x0b, 0xbb, 0x00, 0x70, 0x8e, 0xc3, 0x31, 0xdb, 110c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xb8, 0x01, 0x02, 0xcd, 0x13, 0x72, 0x2a, 0x8c, 111c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xc3, 0x8e, 0x06, 0x48, 0x7c, 0x60, 0x1e, 0xb9, 112c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x01, 0x8e, 0xdb, 0x31, 0xf6, 0x31, 0xff, 113c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xfc, 0xf3, 0xa5, 0x1f, 0x61, 0xff, 0x26, 0x42, 114c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x7c, 0xbe, 0x85, 0x7d, 0xe8, 0x40, 0x00, 0xeb, 115c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x0e, 0xbe, 0x8a, 0x7d, 0xe8, 0x38, 0x00, 0xeb, 116c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x06, 0xbe, 0x94, 0x7d, 0xe8, 0x30, 0x00, 0xbe, 117c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x99, 0x7d, 0xe8, 0x2a, 0x00, 0xeb, 0xfe, 0x47, 118c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x52, 0x55, 0x42, 0x20, 0x00, 0x47, 0x65, 0x6f, 119c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x6d, 0x00, 0x48, 0x61, 0x72, 0x64, 0x20, 0x44, 120c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x69, 0x73, 0x6b, 0x00, 0x52, 0x65, 0x61, 0x64, 121c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x20, 0x45, 0x72, 0x72, 0x6f, 0x72, 0x00, 122c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xbb, 0x01, 0x00, 0xb4, 0x0e, 0xcd, 0x10, 0xac, 123c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x3c, 0x00, 0x75, 0xf4, 0xc3, 0x00, 0x00, 0x00, 124c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 125c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x50, 0xc1, 0x04, 0x00, 0x00, 0x00, 0x80, 0x01, 126c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x01, 0x00, 0x83, 0xfe, 0xff, 0xff, 0x3f, 0x00, 127c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x00, 0x09, 0x7f, 0x32, 0x06, 0x00, 0xfe, 128c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0xff, 0xff, 0x05, 0xfe, 0xff, 0xff, 0x48, 0x7f, 129c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x32, 0x06, 0x79, 0x59, 0x2d, 0x00, 0x00, 0x00, 130c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 131c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 132c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 133c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa 134c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com }; 135c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com vector<char> ret; 136c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com ret.insert(ret.begin(), mbr, mbr + sizeof(mbr)); 137c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com return ret; 138c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com} 139c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 14058e8b1f8b32b355d879008572648fd621873711dDon Garrettstring BindToUnusedLoopDevice(const string &filename) { 141c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com // get a loop device we can use for the install device 14258e8b1f8b32b355d879008572648fd621873711dDon Garrett string cmd = "losetup --show -f " + filename; 14358e8b1f8b32b355d879008572648fd621873711dDon Garrett 14458e8b1f8b32b355d879008572648fd621873711dDon Garrett FILE* find_dev_cmd = popen(cmd.c_str(), "r"); 145c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com CHECK(find_dev_cmd); 146c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 147c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com string ret; 148c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com char dev[100] = {0}; 149c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com size_t r; 150c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com while ((r = fread(dev, 1, sizeof(dev - 1), find_dev_cmd)) > 0) { 151c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_LT(r, sizeof(dev)); 152c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com ret.insert(ret.end(), dev, dev + r); 153c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } 154c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_EQ(r, 0); 155c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_TRUE(feof(find_dev_cmd)); 156c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com fclose(find_dev_cmd); 157c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 158c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com // strip trailing \n on dev 159c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com if (*ret.rbegin() == '\n') 160c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com ret.resize(ret.size() - 1); 161c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 16258e8b1f8b32b355d879008572648fd621873711dDon Garrett // Ensure that the device starts with "/dev/loop" 16358e8b1f8b32b355d879008572648fd621873711dDon Garrett EXPECT_TRUE(StartsWithASCII(ret, "/dev/loop", true)); 164c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com return ret; 165c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com} 166c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 1678006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyesbool ExpectVectorsEq(const vector<char>& expected, const vector<char>& actual) { 1688006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes EXPECT_EQ(expected.size(), actual.size()); 1698006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes if (expected.size() != actual.size()) 170c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com return false; 171617bbc23d2cf4cba5881ec54607926393f7245c7Gilad Arnold bool is_all_eq = true; 1728006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes for (unsigned int i = 0; i < expected.size(); i++) { 1738006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes EXPECT_EQ(expected[i], actual[i]) << "offset: " << i; 174617bbc23d2cf4cba5881ec54607926393f7245c7Gilad Arnold is_all_eq = is_all_eq && (expected[i] == actual[i]); 175c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } 176617bbc23d2cf4cba5881ec54607926393f7245c7Gilad Arnold return is_all_eq; 177c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com} 178c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 1798006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyesvoid FillWithData(vector<char>* buffer) { 1808006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes size_t input_counter = 0; 1818006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes for (vector<char>::iterator it = buffer->begin(); it != buffer->end(); ++it) { 1828006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes *it = kRandomString[input_counter]; 1838006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes input_counter++; 1848006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes input_counter %= sizeof(kRandomString); 1858006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes } 1868006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes} 1878006106bd8dea3761d7f4dd8c8aa82d43c35bd17Andrew de los Reyes 1885c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Levoid CreateEmptyExtImageAtPath(const string& path, 1895c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le size_t size, 1905c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le int block_size) { 1915c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le EXPECT_EQ(0, System(StringPrintf("dd if=/dev/zero of=%s" 1925c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le " seek=%zu bs=1 count=1", 1935c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le path.c_str(), size))); 1945c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le EXPECT_EQ(0, System(StringPrintf("mkfs.ext3 -b %d -F %s", 1955c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le block_size, path.c_str()))); 1965c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le} 1975c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le 198c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.comvoid CreateExtImageAtPath(const string& path, vector<string>* out_paths) { 199c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com // create 10MiB sparse file 200c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_EQ(0, System(StringPrintf("dd if=/dev/zero of=%s" 201c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com " seek=10485759 bs=1 count=1", 202c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com path.c_str()))); 20309e56d64202d2148b95008c5bd18cf719ec0f40cAndrew de los Reyes EXPECT_EQ(0, System(StringPrintf("mkfs.ext3 -b 4096 -F %s", path.c_str()))); 2044fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes EXPECT_EQ(0, System(StringPrintf("mkdir -p %s", kMountPath))); 205c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_EQ(0, System(StringPrintf("mount -o loop %s %s", path.c_str(), 2064fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes kMountPath))); 2074fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes EXPECT_EQ(0, System(StringPrintf("echo hi > %s/hi", kMountPath))); 2084fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes EXPECT_EQ(0, System(StringPrintf("echo hello > %s/hello", kMountPath))); 2094fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes EXPECT_EQ(0, System(StringPrintf("mkdir %s/some_dir", kMountPath))); 2104fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes EXPECT_EQ(0, System(StringPrintf("mkdir %s/some_dir/empty_dir", kMountPath))); 2114fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes EXPECT_EQ(0, System(StringPrintf("mkdir %s/some_dir/mnt", kMountPath))); 2124fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes EXPECT_EQ(0, System(StringPrintf("echo T > %s/some_dir/test", kMountPath))); 2134fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes EXPECT_EQ(0, System(StringPrintf("mkfifo %s/some_dir/fifo", kMountPath))); 2144fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes EXPECT_EQ(0, System(StringPrintf("mknod %s/cdev c 2 3", kMountPath))); 2154fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes EXPECT_EQ(0, System(StringPrintf("ln -s /some/target %s/sym", kMountPath))); 216c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_EQ(0, System(StringPrintf("ln %s/some_dir/test %s/testlink", 2174fe15d017c145aca449c2248420c1b4ec8c23758Andrew de los Reyes kMountPath, kMountPath))); 21829da8aafd5da32ebfb57c7f3cf1b89ce3e5d60cbAndrew de los Reyes EXPECT_EQ(0, System(StringPrintf("echo T > %s/srchardlink0", kMountPath))); 21929da8aafd5da32ebfb57c7f3cf1b89ce3e5d60cbAndrew de los Reyes EXPECT_EQ(0, System(StringPrintf("ln %s/srchardlink0 %s/srchardlink1", 22029da8aafd5da32ebfb57c7f3cf1b89ce3e5d60cbAndrew de los Reyes kMountPath, kMountPath))); 22148a0a4826c47fe097d7ff31ad830911c1f288dbfAndrew de los Reyes EXPECT_EQ(0, System(StringPrintf("ln -s bogus %s/boguslink", 22248a0a4826c47fe097d7ff31ad830911c1f288dbfAndrew de los Reyes kMountPath))); 2237f42b82cb28a78efc088155c5c256824a089b150David James EXPECT_EQ(0, System(StringPrintf("umount %s", kMountPath))); 2245c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le 225c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com if (out_paths) { 226c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->clear(); 227c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back(""); 228c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/hi"); 22948a0a4826c47fe097d7ff31ad830911c1f288dbfAndrew de los Reyes out_paths->push_back("/boguslink"); 230c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/hello"); 231c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/some_dir"); 232c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/some_dir/empty_dir"); 233c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/some_dir/mnt"); 234c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/some_dir/test"); 235c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/some_dir/fifo"); 236c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/cdev"); 237c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/testlink"); 238c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/sym"); 23929da8aafd5da32ebfb57c7f3cf1b89ce3e5d60cbAndrew de los Reyes out_paths->push_back("/srchardlink0"); 24029da8aafd5da32ebfb57c7f3cf1b89ce3e5d60cbAndrew de los Reyes out_paths->push_back("/srchardlink1"); 241c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com out_paths->push_back("/lost+found"); 242c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } 243c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com} 244c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 245c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.comvoid VerifyAllPaths(const string& parent, set<string> expected_paths) { 246c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com FilesystemIterator iter(parent, set<string>()); 247c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com ino_t test_ino = 0; 248c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com ino_t testlink_ino = 0; 249c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com while (!iter.IsEnd()) { 250c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com string path = iter.GetFullPath(); 251c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_TRUE(expected_paths.find(path) != expected_paths.end()) << path; 252c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_EQ(1, expected_paths.erase(path)); 253c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com if (utils::StringHasSuffix(path, "/hi") || 254c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com utils::StringHasSuffix(path, "/hello") || 255c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com utils::StringHasSuffix(path, "/test") || 256c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com utils::StringHasSuffix(path, "/testlink")) { 257c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_TRUE(S_ISREG(iter.GetStat().st_mode)); 258c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com if (utils::StringHasSuffix(path, "/test")) 259c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com test_ino = iter.GetStat().st_ino; 260c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com else if (utils::StringHasSuffix(path, "/testlink")) 261c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com testlink_ino = iter.GetStat().st_ino; 262c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } else if (utils::StringHasSuffix(path, "/some_dir") || 263c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com utils::StringHasSuffix(path, "/empty_dir") || 264c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com utils::StringHasSuffix(path, "/mnt") || 265c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com utils::StringHasSuffix(path, "/lost+found") || 266c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com parent == path) { 267c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_TRUE(S_ISDIR(iter.GetStat().st_mode)); 268c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } else if (utils::StringHasSuffix(path, "/fifo")) { 269c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_TRUE(S_ISFIFO(iter.GetStat().st_mode)); 270c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } else if (utils::StringHasSuffix(path, "/cdev")) { 271c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_TRUE(S_ISCHR(iter.GetStat().st_mode)); 272c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } else if (utils::StringHasSuffix(path, "/sym")) { 273c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_TRUE(S_ISLNK(iter.GetStat().st_mode)); 274c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } else { 275c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com LOG(INFO) << "got non hardcoded path: " << path; 276c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } 277c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com iter.Increment(); 278c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } 279c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_EQ(testlink_ino, test_ino); 280c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_NE(0, test_ino); 281c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_FALSE(iter.IsErr()); 282c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com EXPECT_TRUE(expected_paths.empty()); 283c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com if (!expected_paths.empty()) { 284c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com for (set<string>::const_iterator it = expected_paths.begin(); 285c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com it != expected_paths.end(); ++it) { 286c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com LOG(INFO) << "extra path: " << *it; 287c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } 288c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com } 289c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com} 290c98a7edf648aad88b3f66df3b5a7d43d6a6d7fa9adlr@google.com 29158e8b1f8b32b355d879008572648fd621873711dDon GarrettScopedLoopMounter::ScopedLoopMounter(const string& file_path, 29258e8b1f8b32b355d879008572648fd621873711dDon Garrett string* mnt_path, 2935c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le unsigned long flags) { 2945c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le EXPECT_TRUE(utils::MakeTempDirectory("/tmp/mnt.XXXXXX", mnt_path)); 2955c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le dir_remover_.reset(new ScopedDirRemover(*mnt_path)); 2965c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le 29758e8b1f8b32b355d879008572648fd621873711dDon Garrett string loop_dev; 29858e8b1f8b32b355d879008572648fd621873711dDon Garrett loop_binder_.reset(new ScopedLoopbackDeviceBinder(file_path, &loop_dev)); 2995c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le 3005c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le EXPECT_TRUE(utils::MountFilesystem(loop_dev, *mnt_path, flags)); 3015c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le unmounter_.reset(new ScopedFilesystemUnmounter(*mnt_path)); 3025c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le} 3035c7d97590b51ae9e85dde1e37a3fd91d06f7991dThieu Le 30449fdf1889b965be25f929eeebc5b60cd40b9043rspangler@google.com} // namespace chromeos_update_engine 305