2 * Copyright (C) 2008 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef _VOLUMEMANAGER_H
18 #define _VOLUMEMANAGER_H
23 #include <utils/List.h>
24 #include <sysutils/SocketListener.h>
28 /* The length of an MD5 hash when encoded into ASCII hex characters */
29 #define MD5_ASCII_LENGTH_PLUS_NULL ((MD5_DIGEST_LENGTH*2)+1)
31 typedef enum { ASEC, OBB } container_type_t;
35 ContainerData(char* _id, container_type_t _type)
48 container_type_t type;
51 typedef android::List<ContainerData*> AsecIdCollection;
55 static VolumeManager *sInstance;
58 SocketListener *mBroadcaster;
60 VolumeCollection *mVolumes;
61 AsecIdCollection *mActiveContainers;
64 // for adjusting /proc/sys/vm/dirty_ratio when UMS is active
68 int mVolManagerDisabled;
71 virtual ~VolumeManager();
76 void handleBlockEvent(NetlinkEvent *evt);
78 int addVolume(Volume *v);
80 int listVolumes(SocketClient *cli, bool broadcast);
81 int mountVolume(const char *label);
82 int unmountVolume(const char *label, bool force, bool revert);
83 int shareVolume(const char *label, const char *method);
84 int unshareVolume(const char *label, const char *method);
85 int shareEnabled(const char *path, const char *method, bool *enabled);
86 int formatVolume(const char *label, bool wipe);
87 void disableVolumeManager(void) { mVolManagerDisabled = 1; }
90 int findAsec(const char *id, char *asecPath = NULL, size_t asecPathLen = 0,
91 const char **directory = NULL) const;
92 int createAsec(const char *id, unsigned numSectors, const char *fstype,
93 const char *key, const int ownerUid, bool isExternal);
94 int resizeAsec(const char *id, unsigned numSectors, const char *key);
95 int finalizeAsec(const char *id);
98 * Fixes ASEC permissions on a filesystem that has owners and permissions.
99 * This currently means EXT4-based ASEC containers.
101 * There is a single file that can be marked as "private" and will not have
102 * world-readable permission. The group for that file will be set to the gid
105 * Returns 0 on success.
107 int fixupAsecPermissions(const char *id, gid_t gid, const char* privateFilename);
108 int destroyAsec(const char *id, bool force);
109 int mountAsec(const char *id, const char *key, int ownerUid, bool readOnly);
110 int unmountAsec(const char *id, bool force);
111 int renameAsec(const char *id1, const char *id2);
112 int getAsecMountPath(const char *id, char *buffer, int maxlen);
113 int getAsecFilesystemPath(const char *id, char *buffer, int maxlen);
115 /* Loopback images */
116 int listMountedObbs(SocketClient* cli);
117 int mountObb(const char *fileName, const char *key, int ownerUid);
118 int unmountObb(const char *fileName, bool force);
119 int getObbMountPath(const char *id, char *buffer, int maxlen);
121 Volume* getVolumeForFile(const char *fileName);
123 /* Shared between ASEC and Loopback images */
124 int unmountLoopImage(const char *containerId, const char *loopId,
125 const char *fileName, const char *mountPoint, bool force);
127 void setDebug(bool enable);
129 // XXX: Post froyo this should be moved and cleaned up
130 int cleanupAsec(Volume *v, bool force);
132 void setBroadcaster(SocketListener *sl) { mBroadcaster = sl; }
133 SocketListener *getBroadcaster() { return mBroadcaster; }
135 static VolumeManager *Instance();
137 static char *asecHash(const char *id, char *buffer, size_t len);
139 Volume *lookupVolume(const char *label);
140 int getNumDirectVolumes(void);
141 int getDirectVolumeList(struct volume_info *vol_list);
142 int unmountAllAsecsInDir(const char *directory);
145 * Ensure that all directories along given path exist, creating parent
146 * directories as needed. Validates that given path is absolute and that
147 * it contains no relative "." or ".." paths or symlinks. Last path segment
148 * is treated as filename and ignored, unless the path ends with "/". Also
149 * ensures that path belongs to a volume managed by vold.
151 int mkdirs(char* path);
155 void readInitialState();
156 bool isMountpointMounted(const char *mp);
157 bool isAsecInDirectory(const char *dir, const char *asec) const;
158 bool isLegalAsecId(const char *id) const;
162 #endif /* __cplusplus */
163 #define UNMOUNT_NOT_MOUNTED_ERR -2
164 int vold_disableVol(const char *label);
165 int vold_getNumDirectVolumes(void);
166 int vold_getDirectVolumeList(struct volume_info *v);
167 int vold_unmountAllAsecs(void);