19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.os; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Retrieve overall information about the space on a filesystem. This is a 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Wrapper for Unix statfs(). 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class StatFs { 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Construct a new StatFs for looking at the stats of the 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * filesystem at <var>path</var>. Upon construction, the stat of 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the file system will be performed, and the values retrieved available 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * from the methods on this class. 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param path A path in the desired file system to state. 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public StatFs(String path) { native_setup(path); } 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Perform a restat of the file system referenced by this object. This 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is the same as re-constructing the object with the same file system 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * path, and the new stat values are available upon return. 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void restat(String path) { native_restat(path); } 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project protected void finalize() { native_finalize(); } 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The size, in bytes, of a block on the file system. This corresponds 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to the Unix statfs.f_bsize field. 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public native int getBlockSize(); 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The total number of blocks on the file system. This corresponds 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to the Unix statfs.f_blocks field. 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public native int getBlockCount(); 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The total number of blocks that are free on the file system, including 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * reserved blocks (that are not available to normal applications). This 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * corresponds to the Unix statfs.f_bfree field. Most applications will 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * want to use {@link #getAvailableBlocks()} instead. 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public native int getFreeBlocks(); 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * The number of blocks that are free on the file system and available to 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * applications. This corresponds to the Unix statfs.f_bavail field. 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public native int getAvailableBlocks(); 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private int mNativeContext; 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private native void native_restat(String path); 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private native void native_setup(String path); 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private native void native_finalize(); 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 75