# Struct std::fs::Permissions [−] [src]

    pub struct Permissions(_);

Representation of the various permissions on a file.

This module only currently provides one bit of information, `readonly`, which is exposed on all currently supported platforms. Unix-specific functionality, such as mode bits, is available through the `os::unix::PermissionsExt` trait.

## Methods

### `impl Permissions`

#### `fn readonly(&self) -> bool`

Returns whether these permissions describe a readonly file.

# Examples

fn main() { use std::fs::File; fn foo() -> std::io::Result<()> { let mut f = try!(File::create("foo.txt")); let metadata = try!(f.metadata()); assert_eq!(false, metadata.permissions().readonly()); Ok(()) } }

    use std::fs::File;

    let mut f = try!(File::create("foo.txt"));
    let metadata = try!(f.metadata());

    assert_eq!(false, metadata.permissions().readonly());

#### `fn set_readonly(&mut self, readonly: bool)`

Modifies the readonly flag for this set of permissions.

This operation does not modify the filesystem. To modify the filesystem use the `fs::set_permissions` function.

# Examples

fn main() { use std::fs::File; fn foo() -> std::io::Result<()> { let f = try!(File::create("foo.txt")); let metadata = try!(f.metadata()); let mut permissions = metadata.permissions(); permissions.set_readonly(true); // filesystem doesn't change assert_eq!(false, metadata.permissions().readonly()); // just this particular `permissions`. assert_eq!(true, permissions.readonly()); Ok(()) } }

    use std::fs::File;

    let f = try!(File::create("foo.txt"));
    let metadata = try!(f.metadata());
    let mut permissions = metadata.permissions();

    permissions.set_readonly(true);

    // filesystem doesn't change
    assert_eq!(false, metadata.permissions().readonly());

    // just this particular `permissions`.
    assert_eq!(true, permissions.readonly());

## Trait Implementations

### `impl PermissionsExt for Permissions`

#### `fn mode(&self) -> mode_t`

#### `fn set_mode(&mut self, mode: mode_t)`

#### `fn from_mode(mode: mode_t) -> Permissions`

### `impl PermissionsExt for Permissions`

#### `fn mode(&self) -> mode_t`

#### `fn set_mode(&mut self, mode: mode_t)`

#### `fn from_mode(mode: mode_t) -> Permissions`

### Derived Implementations

### `impl Debug for Permissions`

#### `fn fmt(&self, __arg_0: &mut Formatter) -> Result`

### `impl Eq for Permissions`

### `impl PartialEq for Permissions`

#### `fn eq(&self, __arg_0: &Permissions) -> bool`

#### `fn ne(&self, __arg_0: &Permissions) -> bool`

### `impl Clone for Permissions`

#### `fn clone(&self) -> Permissions`

#### `fn clone_from(&mut self, source: &Self)`

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