Struct FallocateFlags

#[repr(transparent)]
pub struct FallocateFlags(/* private field */);

Mode argument flags for fallocate determining operation performed on a given range.

Implementations

impl FallocateFlags

const fn empty() -> Self

Get a flags value with all bits unset.

const fn all() -> Self

Get a flags value with all known bits set.

const fn bits(&self) -> c_int

Get the underlying bits value.

The returned value is exactly the bits set in this flags value.

const fn from_bits(bits: c_int) -> Option<Self>

Convert from a bits value.

This method will return None if any unknown bits are set.

const fn from_bits_truncate(bits: c_int) -> Self

Convert from a bits value, unsetting any unknown bits.

const fn from_bits_retain(bits: c_int) -> Self

Convert from a bits value exactly.

fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set.

This method will return None if name is empty or doesn't correspond to any named flag.

const fn is_empty(&self) -> bool

Whether all bits in self are unset.

const fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

Whether any set bits in other are also set in self.

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

Whether all set bits in other are also set in self.

fn insert(&mut self, other: Self)

The bitwise or (|) of the bits in self and other.

fn remove(&mut self, other: Self)

The intersection of self with the complement of other (&!).

This method is not equivalent to self & !other when other has unknown bits set. remove won't truncate other, but the ! operator will.

fn toggle(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in self and other.

fn set(&mut self, other: Self, value: bool)

Call insert when value is true or remove when value is false.

const fn intersection(self, other: Self) -> Self

The bitwise and (&) of the bits in self and other.

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

The bitwise or (|) of the bits in self and other.

const fn difference(self, other: Self) -> Self

The intersection of self with the complement of other (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won't truncate other, but the ! operator will.

const fn symmetric_difference(self, other: Self) -> Self

The bitwise exclusive-or (^) of the bits in self and other.

const fn complement(self) -> Self

The bitwise negation (!) of the bits in self, truncating the result.

impl FallocateFlags

const fn iter(&self) -> Iter<FallocateFlags>

Yield a set of contained flags values.

Each yielded flags value will correspond to a defined named flag. Any unknown bits will be yielded together as a final flags value.

const fn iter_names(&self) -> IterNames<FallocateFlags>

Yield a set of contained named flags values.

This method is like iter, except only yields bits in contained named flags. Any unknown bits, or bits not corresponding to a contained flag will not be yielded.

impl FallocateFlags

const FALLOC_FL_KEEP_SIZE: Self = _;

File size is not changed.

offset + len can be greater than file size.

const FALLOC_FL_PUNCH_HOLE: Self = _;

Deallocates space by creating a hole.

Must be ORed with FALLOC_FL_KEEP_SIZE. Byte range starts at offset and continues for len bytes.

const FALLOC_FL_COLLAPSE_RANGE: Self = _;

Removes byte range from a file without leaving a hole.

Byte range to collapse starts at offset and continues for len bytes.

const FALLOC_FL_ZERO_RANGE: Self = _;

Zeroes space in specified byte range.

Byte range starts at offset and continues for len bytes.

const FALLOC_FL_INSERT_RANGE: Self = _;

Increases file space by inserting a hole within the file size.

Does not overwrite existing data. Hole starts at offset and continues for len bytes.

const FALLOC_FL_UNSHARE_RANGE: Self = _;

Shared file data extants are made private to the file.

Guarantees that a subsequent write will not fail due to lack of space.

Trait Implementations

impl Binary for FallocateFlags

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

impl BitAnd for FallocateFlags

type Output = FallocateFlags;
fn bitand(self, other: Self) -> Self

The bitwise and (&) of the bits in self and other.

impl BitAndAssign for FallocateFlags

fn bitand_assign(&mut self, other: Self)

The bitwise and (&) of the bits in self and other.

impl BitOr for FallocateFlags

type Output = FallocateFlags;
fn bitor(self, other: FallocateFlags) -> Self

The bitwise or (|) of the bits in self and other.

impl BitOrAssign for FallocateFlags

fn bitor_assign(&mut self, other: Self)

The bitwise or (|) of the bits in self and other.

impl BitXor for FallocateFlags

type Output = FallocateFlags;
fn bitxor(self, other: Self) -> Self

The bitwise exclusive-or (^) of the bits in self and other.

impl BitXorAssign for FallocateFlags

fn bitxor_assign(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in self and other.

impl Clone for FallocateFlags

fn clone(&self) -> Self

impl Copy for FallocateFlags

impl Debug for FallocateFlags

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

impl Eq for FallocateFlags

impl Extend<FallocateFlags> for FallocateFlags

fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)

The bitwise or (|) of the bits in each flags value.

impl Flags for FallocateFlags

const FLAGS: &'static [Flag<FallocateFlags>] = _;
type Bits = i32;
fn bits(&self) -> c_int
fn from_bits_retain(bits: c_int) -> FallocateFlags
fn all_named() -> FallocateFlags

impl FromIterator<FallocateFlags> for FallocateFlags

fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self

The bitwise or (|) of the bits in each flags value.

impl Hash for FallocateFlags

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

impl IntoIterator for FallocateFlags

type Item = FallocateFlags;
type IntoIter = Iter<FallocateFlags>;
fn into_iter(self) -> Self::IntoIter

impl LowerHex for FallocateFlags

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

impl Not for FallocateFlags

type Output = FallocateFlags;
fn not(self) -> Self

The bitwise negation (!) of the bits in self, truncating the result.

impl Octal for FallocateFlags

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

impl Ord for FallocateFlags

fn cmp(&self, other: &Self) -> Ordering

impl PartialEq for FallocateFlags

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

impl PartialOrd for FallocateFlags

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

impl PublicFlags for FallocateFlags

type Primitive = i32;
type Internal = InternalBitFlags;

impl StructuralPartialEq for FallocateFlags

impl Sub for FallocateFlags

type Output = FallocateFlags;
fn sub(self, other: Self) -> Self

The intersection of self with the complement of other (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won't truncate other, but the ! operator will.

impl SubAssign for FallocateFlags

fn sub_assign(&mut self, other: Self)

The intersection of self with the complement of other (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won't truncate other, but the ! operator will.

impl UpperHex for FallocateFlags

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

Auto Trait Implementations

impl Freeze for FallocateFlags

impl RefUnwindSafe for FallocateFlags

impl Send for FallocateFlags

impl Sync for FallocateFlags

impl Unpin for FallocateFlags

impl UnsafeUnpin for FallocateFlags

impl UnwindSafe for FallocateFlags

Blanket Implementations

impl<T> Any for FallocateFlags where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for FallocateFlags where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for FallocateFlags where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> CloneToUninit for FallocateFlags where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

impl<T> From<T> for FallocateFlags

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> ToOwned for FallocateFlags where T: Clone,

type Owned = T;
fn to_owned(&self) -> T
fn clone_into(&self, target: &mut T)

impl<T, U> Into<U> for FallocateFlags where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

impl<T, U> TryFrom<U> for FallocateFlags where U: Into<T>,

type Error = never;
fn try_from(value: U) -> Result<T, never>

impl<T, U> TryInto<U> for FallocateFlags where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error;
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>