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.
impl Permissions
[src]
pub fn readonly(&self) -> bool
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Returns whether these permissions describe a readonly (unwritable) file.
use std::fs::File; let mut f = File::create("foo.txt")?; let metadata = f.metadata()?; assert_eq!(false, metadata.permissions().readonly());
pub fn set_readonly(&mut self, readonly: bool)
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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.
use std::fs::File; 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());
impl Clone for Permissions
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fn clone(&self) -> Permissions
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl PartialEq for Permissions
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fn eq(&self, __arg_0: &Permissions) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &Permissions) -> bool
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This method tests for !=
.
impl Eq for Permissions
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impl Debug for Permissions
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fn fmt(&self, __arg_0: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl PermissionsExt for Permissions
fn mode(&self) -> u32
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Returns the underlying raw st_mode
bits that contain the standard Unix permissions for this file. Read more
fn set_mode(&mut self, mode: u32)
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Sets the underlying raw bits for this set of permissions. Read more
fn from_mode(mode: u32) -> Permissions
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Creates a new instance of Permissions
from the given set of Unix permission bits. Read more
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/fs/struct.Permissions.html