116864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood/* 216864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * Copyright (C) 2010 The Android Open Source Project 316864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * 416864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * Licensed under the Apache License, Version 2.0 (the "License"); 516864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * you may not use this file except in compliance with the License. 616864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * You may obtain a copy of the License at 716864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * 816864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * http://www.apache.org/licenses/LICENSE-2.0 916864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * 1016864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * Unless required by applicable law or agreed to in writing, software 1116864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * distributed under the License is distributed on an "AS IS" BASIS, 1216864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1316864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * See the License for the specific language governing permissions and 1416864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood * limitations under the License. 1516864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood */ 1616864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood 17b14e588bec4d5e39e61b020b5b575f2ce555d316Mike Lockwood#define LOG_TAG "MtpUtils" 18b14e588bec4d5e39e61b020b5b575f2ce555d316Mike Lockwood 19708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang#include <android-base/logging.h> 20708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang#include <android-base/unique_fd.h> 21708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang#include <dirent.h> 22708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang#include <fcntl.h> 23e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang#include <string> 24708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang#include <sys/sendfile.h> 25708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang#include <sys/stat.h> 26708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang#include <sys/types.h> 27335dd2be955607f2632eabc25045857f2cc8b674Mike Lockwood#include <stdio.h> 2816864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood#include <time.h> 29708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang#include <unistd.h> 3016864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood 3116864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood#include "MtpUtils.h" 3216864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood 33e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhangusing namespace std; 34e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang 357850ef999740f214a1990a9c090d3f3865d435aaMike Lockwoodnamespace android { 367850ef999740f214a1990a9c090d3f3865d435aaMike Lockwood 37708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhangconstexpr unsigned long FILE_COPY_SIZE = 262144; 38708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 39dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhangstatic void access_ok(const char *path) { 40dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang if (access(path, F_OK) == -1) { 41dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang // Ignore. Failure could be common in cases of delete where 42dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang // the metadata was updated through other paths. 43dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang } 44dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang} 45dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang 4616864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood/* 4716864bae0f51c32c456da2c43adf7a057c0c4882Mike LockwoodDateTime strings follow a compatible subset of the definition found in ISO 8601, and 4816864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwoodtake the form of a Unicode string formatted as: "YYYYMMDDThhmmss.s". In this 4916864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwoodrepresentation, YYYY shall be replaced by the year, MM replaced by the month (01-12), 5016864bae0f51c32c456da2c43adf7a057c0c4882Mike LockwoodDD replaced by the day (01-31), T is a constant character 'T' delimiting time from date, 5116864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwoodhh is replaced by the hour (00-23), mm is replaced by the minute (00-59), and ss by the 5216864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwoodsecond (00-59). The ".s" is optional, and represents tenths of a second. 53d4b473884617987e02155cd1aae9e573e2f79a58Elliott HughesThis is followed by a UTC offset given as "[+-]zzzz" or the literal "Z", meaning UTC. 5416864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood*/ 5516864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood 5616864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwoodbool parseDateTime(const char* dateTime, time_t& outSeconds) { 5716864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood int year, month, day, hour, minute, second; 5816864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood if (sscanf(dateTime, "%04d%02d%02dT%02d%02d%02d", 59d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes &year, &month, &day, &hour, &minute, &second) != 6) 6016864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood return false; 61d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes 6216864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood // skip optional tenth of second 63d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes const char* tail = dateTime + 15; 64d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes if (tail[0] == '.' && tail[1]) tail += 2; 6516864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood 66d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes // FIXME: "Z" means UTC, but non-"Z" doesn't mean local time. 67d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes // It might be that you're in Asia/Seoul on vacation and your Android 68d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes // device has noticed this via the network, but your camera was set to 69d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes // America/Los_Angeles once when you bought it and doesn't know where 70d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes // it is right now, so the camera says "20160106T081700-0800" but we 71d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes // just ignore the "-0800" and assume local time which is actually "+0900". 72d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes // I think to support this (without switching to Java or using icu4c) 73d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes // you'd want to always use timegm(3) and then manually add/subtract 74d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes // the UTC offset parsed from the string (taking care of wrapping). 75d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes // mktime(3) ignores the tm_gmtoff field, so you can't let it do the work. 76d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes bool useUTC = (tail[0] == 'Z'); 7716864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood 78d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes struct tm tm = {}; 7916864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood tm.tm_sec = second; 8016864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood tm.tm_min = minute; 8116864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood tm.tm_hour = hour; 8216864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood tm.tm_mday = day; 83ea1db0a716cc937af5371153b959610baa2c6d52Mike Lockwood tm.tm_mon = month - 1; // mktime uses months in 0 - 11 range 8416864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood tm.tm_year = year - 1900; 8516864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood tm.tm_isdst = -1; 86d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes outSeconds = useUTC ? timegm(&tm) : mktime(&tm); 8716864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood 8816864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood return true; 8916864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood} 9016864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood 9116864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwoodvoid formatDateTime(time_t seconds, char* buffer, int bufferLength) { 9216864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood struct tm tm; 9316864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood 9416864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood localtime_r(&seconds, &tm); 9516864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood snprintf(buffer, bufferLength, "%04d%02d%02dT%02d%02d%02d", 96d4b473884617987e02155cd1aae9e573e2f79a58Elliott Hughes tm.tm_year + 1900, 97ea1db0a716cc937af5371153b959610baa2c6d52Mike Lockwood tm.tm_mon + 1, // localtime_r uses months in 0 - 11 range 98ea1db0a716cc937af5371153b959610baa2c6d52Mike Lockwood tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); 9916864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood} 10016864bae0f51c32c456da2c43adf7a057c0c4882Mike Lockwood 101e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhangint makeFolder(const char *path) { 102e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang mode_t mask = umask(0); 103e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang int ret = mkdir((const char *)path, DIR_PERM); 104e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang umask(mask); 105e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang if (ret && ret != -EEXIST) { 106e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang PLOG(ERROR) << "Failed to create folder " << path; 107e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang ret = -1; 108e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang } else { 109e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang chown((const char *)path, getuid(), FILE_GROUP); 110e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang } 111dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang access_ok(path); 112e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang return ret; 113e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang} 114e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang 115e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang/** 116e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang * Copies target path and all children to destination path. 117e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang * 118e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang * Returns 0 on success or a negative value indicating number of failures 119e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang */ 120e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhangint copyRecursive(const char *fromPath, const char *toPath) { 121e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang int ret = 0; 122e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang string fromPathStr(fromPath); 123e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang string toPathStr(toPath); 124e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang 125e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang DIR* dir = opendir(fromPath); 126e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang if (!dir) { 127e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang PLOG(ERROR) << "opendir " << fromPath << " failed"; 128e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang return -1; 129e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang } 130e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang if (fromPathStr[fromPathStr.size()-1] != '/') 131e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang fromPathStr += '/'; 132e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang if (toPathStr[toPathStr.size()-1] != '/') 133e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang toPathStr += '/'; 134e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang 135e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang struct dirent* entry; 136e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang while ((entry = readdir(dir))) { 137e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang const char* name = entry->d_name; 138e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang 139e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang // ignore "." and ".." 140e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang if (name[0] == '.' && (name[1] == 0 || (name[1] == '.' && name[2] == 0))) { 141e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang continue; 142e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang } 143e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang string oldFile = fromPathStr + name; 144e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang string newFile = toPathStr + name; 145e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang 146e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang if (entry->d_type == DT_DIR) { 147e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang ret += makeFolder(newFile.c_str()); 148e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang ret += copyRecursive(oldFile.c_str(), newFile.c_str()); 149e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang } else { 150e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang ret += copyFile(oldFile.c_str(), newFile.c_str()); 151e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang } 152e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang } 153e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang return ret; 154e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang} 155e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang 156708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhangint copyFile(const char *fromPath, const char *toPath) { 157708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang auto start = std::chrono::steady_clock::now(); 158708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 159708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang android::base::unique_fd fromFd(open(fromPath, O_RDONLY)); 160708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang if (fromFd == -1) { 161708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang PLOG(ERROR) << "Failed to open copy from " << fromPath; 162708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang return -1; 163708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 164e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang android::base::unique_fd toFd(open(toPath, O_CREAT | O_WRONLY, FILE_PERM)); 165708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang if (toFd == -1) { 166708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang PLOG(ERROR) << "Failed to open copy to " << toPath; 167708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang return -1; 168708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 169708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang off_t offset = 0; 170708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 171708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang struct stat sstat = {}; 172708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang if (stat(fromPath, &sstat) == -1) 173708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang return -1; 174708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 175708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang off_t length = sstat.st_size; 176708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang int ret = 0; 177708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 178708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang while (offset < length) { 179708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang ssize_t transfer_length = std::min(length - offset, (off_t) FILE_COPY_SIZE); 180708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang ret = sendfile(toFd, fromFd, &offset, transfer_length); 181708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang if (ret != transfer_length) { 182708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang ret = -1; 183708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang PLOG(ERROR) << "Copying failed!"; 184708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang break; 185708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 186708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 187708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang auto end = std::chrono::steady_clock::now(); 188708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang std::chrono::duration<double> diff = end - start; 189e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang LOG(DEBUG) << "Copied a file with MTP. Time: " << diff.count() << " s, Size: " << length << 190708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang ", Rate: " << ((double) length) / diff.count() << " bytes/s"; 191e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang chown(toPath, getuid(), FILE_GROUP); 192dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang access_ok(toPath); 193708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang return ret == -1 ? -1 : 0; 194708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang} 195708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 196708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhangvoid deleteRecursive(const char* path) { 197e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang string pathStr(path); 198e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang if (pathStr[pathStr.size()-1] != '/') { 199e242f12c0f33518e0760fabfdad8cb93a1c8a2fbJerry Zhang pathStr += '/'; 200708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 201708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 202708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang DIR* dir = opendir(path); 203708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang if (!dir) { 204708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang PLOG(ERROR) << "opendir " << path << " failed"; 205708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang return; 206708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 207708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 208708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang struct dirent* entry; 209708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang while ((entry = readdir(dir))) { 210708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang const char* name = entry->d_name; 211708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 212708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang // ignore "." and ".." 213708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang if (name[0] == '.' && (name[1] == 0 || (name[1] == '.' && name[2] == 0))) { 214708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang continue; 215708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 216e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang string childPath = pathStr + name; 217e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang int success; 218708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang if (entry->d_type == DT_DIR) { 219e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang deleteRecursive(childPath.c_str()); 220e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang success = rmdir(childPath.c_str()); 221708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } else { 222e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang success = unlink(childPath.c_str()); 223708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 224dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang access_ok(childPath.c_str()); 225e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang if (success == -1) 226e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang PLOG(ERROR) << "Deleting path " << childPath << " failed"; 227708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 228708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang closedir(dir); 229708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang} 230708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 231e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhangbool deletePath(const char* path) { 232708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang struct stat statbuf; 233e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang int success; 234708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang if (stat(path, &statbuf) == 0) { 235708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang if (S_ISDIR(statbuf.st_mode)) { 236e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang // rmdir will fail if the directory is non empty, so 237e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang // there is no need to keep errors from deleteRecursive 238708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang deleteRecursive(path); 239e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang success = rmdir(path); 240708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } else { 241e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang success = unlink(path); 242708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 243708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } else { 244e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang PLOG(ERROR) << "deletePath stat failed for " << path; 245e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang return false; 246708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang } 247e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang if (success == -1) 248e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang PLOG(ERROR) << "Deleting path " << path << " failed"; 249dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang access_ok(path); 250e5aa05d12a48f7c5766a80d5bd2dc8cd068c1bcdJerry Zhang return success == 0; 251708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang} 252708b3e0b72189d2d2e932459bd0391f98c9ff9a2Jerry Zhang 253dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhangint renameTo(const char *oldPath, const char *newPath) { 254dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang int ret = rename(oldPath, newPath); 255dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang access_ok(oldPath); 256dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang access_ok(newPath); 257dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang return ret; 258dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang} 259dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang 260dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang// Calls access(2) on the path to update underlying filesystems, 261dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang// then closes the fd. 262dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhangvoid closeObjFd(int fd, const char *path) { 263dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang close(fd); 264dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang access_ok(path); 265dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang} 266dc148de23ea1437f0e9f9794c8977ad6cf70f361Jerry Zhang 2677850ef999740f214a1990a9c090d3f3865d435aaMike Lockwood} // namespace android 268