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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.os;
/**
* Retrieve overall information about the space on a filesystem. This is a
* Wrapper for Unix statfs().
*/
public class StatFs {
/**
* Construct a new StatFs for looking at the stats of the
* filesystem at <var>path</var>. Upon construction, the stat of
* the file system will be performed, and the values retrieved available
* from the methods on this class.
*
* @param path A path in the desired file system to state.
*/
public StatFs(String path) { native_setup(path); }
/**
* Perform a restat of the file system referenced by this object. This
* is the same as re-constructing the object with the same file system
* path, and the new stat values are available upon return.
*/
public void restat(String path) { native_restat(path); }
@Override
protected void finalize() { native_finalize(); }
/**
* The size, in bytes, of a block on the file system. This corresponds
* to the Unix statfs.f_bsize field.
*/
public native int getBlockSize();
/**
* The total number of blocks on the file system. This corresponds
* to the Unix statfs.f_blocks field.
*/
public native int getBlockCount();
/**
* The total number of blocks that are free on the file system, including
* reserved blocks (that are not available to normal applications). This
* corresponds to the Unix statfs.f_bfree field. Most applications will
* want to use {@link #getAvailableBlocks()} instead.
*/
public native int getFreeBlocks();
/**
* The number of blocks that are free on the file system and available to
* applications. This corresponds to the Unix statfs.f_bavail field.
*/
public native int getAvailableBlocks();
private int mNativeContext;
private native void native_restat(String path);
private native void native_setup(String path);
private native void native_finalize();
}
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