1.0.0[][src]Struct std::fs::Permissions

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 PermissionsExt trait.

Implementations

impl Permissions[src]

pub fn readonly(&self) -> bool[src]

Returns true if these permissions describe a readonly (unwritable) file.

Examples

use std::fs::File;

fn main() -> std::io::Result<()> {
    let mut f = File::create("foo.txt")?;
    let metadata = f.metadata()?;

    assert_eq!(false, metadata.permissions().readonly());
    Ok(())
}
Run

pub fn set_readonly(&mut self, readonly: bool)[src]

Modifies the readonly flag for this set of permissions. If the readonly argument is true, using the resulting Permission will update file permissions to forbid writing. Conversely, if it's false, using the resulting Permission will update file permissions to allow writing.

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

Examples

use std::fs::File;

fn main() -> std::io::Result<()> {
    let f = File::create("foo.txt")?;
    let metadata = 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(())
}
Run

Trait Implementations

impl Clone for Permissions[src]

impl Debug for Permissions[src]

impl Eq for Permissions[src]

impl PartialEq<Permissions> for Permissions[src]

impl PermissionsExt for Permissions1.1.0[src]

impl StructuralEq for Permissions[src]

impl StructuralPartialEq for Permissions[src]

Auto Trait Implementations

impl RefUnwindSafe for Permissions

impl Send for Permissions

impl Sync for Permissions

impl Unpin for Permissions

impl UnwindSafe for Permissions

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.