Struct FileAttributes 

pub struct FileAttributes(/* private fields */);

The attributes a file is created with: a set of ARCHIVE, HIDDEN, OFFLINE, READONLY, SYSTEM and TEMPORARY, named as CreateFileW names FILE_ATTRIBUTE_* without their prefix.

use win_durable_ioring::windows_backend::FileAttributes;

let attributes = FileAttributes::HIDDEN | FileAttributes::SYSTEM;

assert!(attributes.contains(FileAttributes::HIDDEN));
assert!(!attributes.contains(FileAttributes::READONLY));
assert!(FileAttributes::NONE.is_empty());

They apply to a file the open creates. The CreateFileW page says that for a file that exists the supplied attributes are generally combined with it or ignored, which is Win32’s and is not refined here; FileOptions::attributes says what was measured. The page also says applications should not change OFFLINE arbitrarily.

The empty set asks for no attribute and is what an open passes when none is given; it is not FILE_ATTRIBUTE_NORMAL, which the page defines as valid only alone.

Implementations

impl FileAttributes

pub const ARCHIVE: Self

FILE_ATTRIBUTE_ARCHIVE: the file is marked for backup or removal.

pub const HIDDEN: Self

FILE_ATTRIBUTE_HIDDEN: the file is hidden, and not included in an ordinary directory listing.

pub const OFFLINE: Self

FILE_ATTRIBUTE_OFFLINE: the data is not immediately available, because it has been moved to offline storage. The CreateFileW page says an application should not change it arbitrarily.

pub const READONLY: Self

FILE_ATTRIBUTE_READONLY: the file can be read and not written or deleted.

pub const SYSTEM: Self

FILE_ATTRIBUTE_SYSTEM: the file is part of, or used exclusively by, the operating system.

pub const TEMPORARY: Self

FILE_ATTRIBUTE_TEMPORARY: the file is for temporary storage. The page says it lets a file system keep the data in the cache and avoid writing it back while memory allows.

impl FileAttributes

pub const NONE: Self

No attribute: what an open asks for unless it is told otherwise.

pub const fn union(self, other: Self) -> Self

The union of two sets.

pub const fn contains(self, other: Self) -> bool

Whether every member of other is in this set.

pub const fn is_empty(self) -> bool

Whether the set has no member.

Trait Implementations

impl BitOr for FileAttributes

type Output = FileAttributes

The resulting type after applying the | operator.

fn bitor(self, other: Self) -> Self

Performs the | operation.

impl BitOrAssign for FileAttributes

fn bitor_assign(&mut self, other: Self)

Performs the |= operation.

impl Clone for FileAttributes

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FileAttributes

impl Debug for FileAttributes

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for FileAttributes

impl Hash for FileAttributes

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for FileAttributes

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for FileAttributes