Loop.h revision a19b250bd273455933ca3502cf2c2e0a803aff77
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 <unistd.h> 21#include <linux/loop.h> 22 23class Loop { 24public: 25 static const int LOOP_MAX = 8; 26public: 27 static int getNextAvailable(char *buffer, size_t len); 28 static int lookupActive(const char *loopFile, char *buffer, size_t len); 29 30 static int create(const char *loopDevice, const char *loopFile); 31 static int destroyByDevice(const char *loopDevice); 32 static int destroyByFile(const char *loopFile); 33 static int createImageFile(const char *file, size_t sizeMb); 34}; 35 36#endif 37