1 /* 2 * Copyright (C) 2008 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 #ifndef _LOOP_H 18 #define _LOOP_H 19 20 #include <string> 21 #include <unistd.h> 22 #include <linux/loop.h> 23 24 class SocketClient; 25 26 class Loop { 27 public: 28 static const int LOOP_MAX = 4096; 29 public: 30 static int lookupActive(const char *id, char *buffer, size_t len); 31 static int lookupInfo(const char *loopDevice, struct asec_superblock *sb, unsigned long *nr_sec); 32 static int create(const char *id, const char *loopFile, char *loopDeviceBuffer, size_t len); 33 static int create(const std::string& file, std::string& out_device); 34 static int destroyByDevice(const char *loopDevice); 35 static int destroyByFile(const char *loopFile); 36 static int createImageFile(const char *file, unsigned long numSectors); 37 static int resizeImageFile(const char *file, unsigned long numSectors); 38 39 static int dumpState(SocketClient *c); 40 }; 41 42 #endif 43
