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
33namespace android {
34
35MtpStorage::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
49MtpStorage::~MtpStorage() {
50}
51
52int MtpStorage::getType() const {
53    return (mRemovable ? MTP_STORAGE_REMOVABLE_RAM :  MTP_STORAGE_FIXED_RAM);
54}
55
56int MtpStorage::getFileSystemType() const {
57    return MTP_STORAGE_FILESYSTEM_HIERARCHICAL;
58}
59
60int MtpStorage::getAccessCapability() const {
61    return MTP_STORAGE_READ_WRITE;
62}
63
64uint64_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
74uint64_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
82const char* MtpStorage::getDescription() const {
83    return (const char *)mDescription;
84}
85
86}  // namespace android
87