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
MtpStorage(MtpStorageID id,const char * filePath,const char * description,bool removable,uint64_t maxFileSize)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
~MtpStorage()46 MtpStorage::~MtpStorage() {
47 }
48
getType() const49 int MtpStorage::getType() const {
50 return (mRemovable ? MTP_STORAGE_REMOVABLE_RAM : MTP_STORAGE_FIXED_RAM);
51 }
52
getFileSystemType() const53 int MtpStorage::getFileSystemType() const {
54 return MTP_STORAGE_FILESYSTEM_HIERARCHICAL;
55 }
56
getAccessCapability() const57 int MtpStorage::getAccessCapability() const {
58 return MTP_STORAGE_READ_WRITE;
59 }
60
getMaxCapacity()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
getFreeSpace()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
getDescription() const78 const char* MtpStorage::getDescription() const {
79 return (const char *)mDescription;
80 }
81
82 } // namespace android
83