1.0.0[−][src]Struct std::fs::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.
Methods
impl Permissions
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pub fn readonly(&self) -> bool
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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)
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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.
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 PermissionsExt for Permissions
1.1.0[src]
fn mode(&self) -> u32
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fn set_mode(&mut self, mode: u32)
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fn from_mode(mode: u32) -> Permissions
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impl PartialEq<Permissions> for Permissions
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fn eq(&self, other: &Permissions) -> bool
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fn ne(&self, other: &Permissions) -> bool
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impl Eq for Permissions
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impl Debug for Permissions
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impl Clone for Permissions
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fn clone(&self) -> Permissions
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fn clone_from(&mut self, source: &Self)
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Auto Trait Implementations
impl UnwindSafe for Permissions
impl RefUnwindSafe for Permissions
impl Unpin for Permissions
impl Send for Permissions
impl Sync for Permissions
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
ⓘImportant traits for &'_ mut Ffn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,