statfs

The statfs module provides APIs for obtaining file system information, including the total number of bytes and the number of idle bytes of the file system.

NOTE
The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import statfs from '@ohos.statfs';

statfs.getFreeBytes

getFreeBytes(path:string):Promise<number>

Obtains the number of free bytes of the specified file system in asynchronous mode. This API uses a promise to return the result.

System capability: SystemCapability.FileManagement.File.FileIO

• Parameters

• Return value

• Example

  let path = "/dev";
  statfs.getFreeBytes(path).then(function (number){
      console.info("getFreeBytes promise successfully:"+ number);
  }).catch(function(err){
      console.info("getFreeBytes failed with error:"+ err);
  });
  

statfs.getFreeBytes

getFreeBytes(path:string, callback:AsyncCallback<number>): void

Obtains the number of free bytes of the specified file system in asynchronous mode. This API uses a callback to return the result.

System capability: SystemCapability.FileManagement.File.FileIO

• Parameters

• Example

   import featureAbility from '@ohos.ability.featureAbility';
  let context = featureAbility.getContext();
  context.getFilesDir().then(function (path) {
      statfs.getFreeBytes(path, function(err, number){
          console.info("Got free bytes successfully:"+ number);
      });
  });
  

statfs.getTotalBytes

getTotalBytes(path: string): Promise<number>

Obtains the total number of bytes of the specified file system in asynchronous mode. This API uses a promise to return the result.

System capability: SystemCapability.FileManagement.File.FileIO

• Parameters

• Return value

• Example

  let path = "/dev";
  statfs.getTotalBytes(path).then(function (number){
      console.info("getTotalBytes promise successfully:"+ number);
  }).catch(function(err){
      console.info("getTotalBytes failed with error:"+ err);
  });
  

statfs.getTotalBytes

getTotalBytes(path: string, callback: AsyncCallback<number>): void

Obtains the total number of bytes of the specified file system in asynchronous mode. This API uses a callback to return the result.

System capability: SystemCapability.FileManagement.File.FileIO

• Parameters

• Example

  import featureAbility from '@ohos.ability.featureAbility';
  let context = featureAbility.getContext();
  context.getFilesDir().then(function (path) {
      statfs.getTotalBytes(path, function(err, number){
          console.info("Got total bytes successfully:"+ number);
      });
  });