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# NSData.WritingOptions

Options for methods used to write data objects.

```
struct WritingOptions
```

## Topics

### Initializers

[`init(rawValue:)`](/documentation/Foundation/NSData/WritingOptions/init(rawValue:))

### Constants

[`atomic`](/documentation/Foundation/NSData/WritingOptions/atomic)

An option to write data to an auxiliary file first and then replace the original file with the auxiliary file when the write completes.

[`withoutOverwriting`](/documentation/Foundation/NSData/WritingOptions/withoutOverwriting)

An option that attempts to write data to a file and fails with an error if the destination file already exists.

[`noFileProtection`](/documentation/Foundation/NSData/WritingOptions/noFileProtection)

An option to not encrypt the file when writing it out.

[`completeFileProtection`](/documentation/Foundation/NSData/WritingOptions/completeFileProtection)

An option to make the file accessible only while the device is unlocked.

[`completeFileProtectionUnlessOpen`](/documentation/Foundation/NSData/WritingOptions/completeFileProtectionUnlessOpen)

An option to allow the file to be accessible while the device is unlocked or the file is already open.

[`completeFileProtectionUntilFirstUserAuthentication`](/documentation/Foundation/NSData/WritingOptions/completeFileProtectionUntilFirstUserAuthentication)

An option to allow the file to be accessible after a user first unlocks the device.

[`fileProtectionMask`](/documentation/Foundation/NSData/WritingOptions/fileProtectionMask)

An option the system uses when determining the file protection options that the system assigns to the data.

[`completeFileProtectionWhenUserInactive`](/documentation/Foundation/NSData/WritingOptions/completeFileProtectionWhenUserInactive)

An option to allow the file to be accessible after a user first unlocks the device.

### Legacy Constants

[`atomicWrite`](/documentation/Foundation/NSData/WritingOptions/atomicWrite)

An option that attempts to write data to an auxiliary file first and then exchange the files.

[`atomicWrite`](/documentation/Foundation/NSData/WritingOptions/atomicWrite)

An option that attempts to write data to an auxiliary file first and then exchange the files.

### Entitlements

  <doc://com.apple.documentation/documentation/BundleResources/Entitlements/com.apple.developer.default-data-protection>


---

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