1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "MtpStorage" 18 19 #include "MtpDebug.h" 20 #include "MtpStorage.h" 21 22 #include <sys/types.h> 23 #include <sys/stat.h> 24 #include <sys/statfs.h> 25 #include <unistd.h> 26 #include <dirent.h> 27 #include <errno.h> 28 #include <string.h> 29 #include <stdio.h> 30 #include <limits.h> 31 32 namespace android { 33 34 MtpStorage::MtpStorage(MtpStorageID id, const char* filePath, 35 const char* description, bool removable, uint64_t maxFileSize) 36 : mStorageID(id), 37 mFilePath(filePath), 38 mDescription(description), 39 mMaxCapacity(0), 40 mMaxFileSize(maxFileSize), 41 mRemovable(removable) 42 { 43 ALOGV("MtpStorage id: %d path: %s\n", id, filePath); 44 } 45 46 MtpStorage::~MtpStorage() { 47 } 48 49 int MtpStorage::getType() const { 50 return (mRemovable ? MTP_STORAGE_REMOVABLE_RAM : MTP_STORAGE_FIXED_RAM); 51 } 52 53 int MtpStorage::getFileSystemType() const { 54 return MTP_STORAGE_FILESYSTEM_HIERARCHICAL; 55 } 56 57 int MtpStorage::getAccessCapability() const { 58 return MTP_STORAGE_READ_WRITE; 59 } 60 61 uint64_t MtpStorage::getMaxCapacity() { 62 if (mMaxCapacity == 0) { 63 struct statfs stat; 64 if (statfs(getPath(), &stat)) 65 return -1; 66 mMaxCapacity = (uint64_t)stat.f_blocks * (uint64_t)stat.f_bsize; 67 } 68 return mMaxCapacity; 69 } 70 71 uint64_t MtpStorage::getFreeSpace() { 72 struct statfs stat; 73 if (statfs(getPath(), &stat)) 74 return -1; 75 return (uint64_t)stat.f_bavail * (uint64_t)stat.f_bsize; 76 } 77 78 const char* MtpStorage::getDescription() const { 79 return (const char *)mDescription; 80 } 81 82 } // namespace android 83