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 "MtpDatabase.h"
21 #include "MtpStorage.h"
22
23 #include <sys/types.h>
24 #include <sys/stat.h>
25 #include <sys/statfs.h>
26 #include <unistd.h>
27 #include <dirent.h>
28 #include <errno.h>
29 #include <string.h>
30 #include <stdio.h>
31 #include <limits.h>
32
33 namespace android {
34
MtpStorage(MtpStorageID id,const char * filePath,const char * description,uint64_t reserveSpace,bool removable,uint64_t maxFileSize)35 MtpStorage::MtpStorage(MtpStorageID id, const char* filePath,
36 const char* description, uint64_t reserveSpace,
37 bool removable, uint64_t maxFileSize)
38 : mStorageID(id),
39 mFilePath(filePath),
40 mDescription(description),
41 mMaxCapacity(0),
42 mMaxFileSize(maxFileSize),
43 mReserveSpace(reserveSpace),
44 mRemovable(removable)
45 {
46 ALOGV("MtpStorage id: %d path: %s\n", id, filePath);
47 }
48
~MtpStorage()49 MtpStorage::~MtpStorage() {
50 }
51
getType() const52 int MtpStorage::getType() const {
53 return (mRemovable ? MTP_STORAGE_REMOVABLE_RAM : MTP_STORAGE_FIXED_RAM);
54 }
55
getFileSystemType() const56 int MtpStorage::getFileSystemType() const {
57 return MTP_STORAGE_FILESYSTEM_HIERARCHICAL;
58 }
59
getAccessCapability() const60 int MtpStorage::getAccessCapability() const {
61 return MTP_STORAGE_READ_WRITE;
62 }
63
getMaxCapacity()64 uint64_t MtpStorage::getMaxCapacity() {
65 if (mMaxCapacity == 0) {
66 struct statfs stat;
67 if (statfs(getPath(), &stat))
68 return -1;
69 mMaxCapacity = (uint64_t)stat.f_blocks * (uint64_t)stat.f_bsize;
70 }
71 return mMaxCapacity;
72 }
73
getFreeSpace()74 uint64_t MtpStorage::getFreeSpace() {
75 struct statfs stat;
76 if (statfs(getPath(), &stat))
77 return -1;
78 uint64_t freeSpace = (uint64_t)stat.f_bavail * (uint64_t)stat.f_bsize;
79 return (freeSpace > mReserveSpace ? freeSpace - mReserveSpace : 0);
80 }
81
getDescription() const82 const char* MtpStorage::getDescription() const {
83 return (const char *)mDescription;
84 }
85
86 } // namespace android
87