Struct nix::fcntl::FallocateFlags
source · pub struct FallocateFlags { /* private fields */ }
Expand description
Mode argument flags for fallocate determining operation performed on a given range.
Implementations§
source§impl FallocateFlags
impl FallocateFlags
sourcepub const FALLOC_FL_KEEP_SIZE: Self = _
pub const FALLOC_FL_KEEP_SIZE: Self = _
File size is not changed.
offset + len can be greater than file size.
sourcepub const FALLOC_FL_PUNCH_HOLE: Self = _
pub 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.
sourcepub const FALLOC_FL_COLLAPSE_RANGE: Self = _
pub 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.
sourcepub const FALLOC_FL_ZERO_RANGE: Self = _
pub const FALLOC_FL_ZERO_RANGE: Self = _
Zeroes space in specified byte range.
Byte range starts at offset and continues for len bytes.
sourcepub const FALLOC_FL_INSERT_RANGE: Self = _
pub 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.
sourcepub const FALLOC_FL_UNSHARE_RANGE: Self = _
pub const FALLOC_FL_UNSHARE_RANGE: Self = _
Shared file data extants are made private to the file.
Gaurantees that a subsequent write will not fail due to lack of space.
sourcepub const fn from_bits(bits: c_int) -> Option<Self>
pub const fn from_bits(bits: c_int) -> Option<Self>
Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.
sourcepub const fn from_bits_truncate(bits: c_int) -> Self
pub const fn from_bits_truncate(bits: c_int) -> Self
Convert from underlying bit representation, dropping any bits that do not correspond to flags.
sourcepub const unsafe fn from_bits_unchecked(bits: c_int) -> Self
pub const unsafe fn from_bits_unchecked(bits: c_int) -> Self
Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).
§Safety
The caller of the bitflags!
macro can chose to allow or
disallow extra bits for their bitflags type.
The caller of from_bits_unchecked()
has to ensure that
all bits correspond to a defined flag or that extra bits
are valid for this bitflags type.
sourcepub const fn intersects(&self, other: Self) -> bool
pub const fn intersects(&self, other: Self) -> bool
Returns true
if there are flags common to both self
and other
.
sourcepub const fn contains(&self, other: Self) -> bool
pub const fn contains(&self, other: Self) -> bool
Returns true
if all of the flags in other
are contained within self
.
sourcepub fn set(&mut self, other: Self, value: bool)
pub fn set(&mut self, other: Self, value: bool)
Inserts or removes the specified flags depending on the passed value.
sourcepub const fn intersection(self, other: Self) -> Self
pub const fn intersection(self, other: Self) -> Self
Returns the intersection between the flags in self
and
other
.
Specifically, the returned set contains only the flags which are
present in both self
and other
.
This is equivalent to using the &
operator (e.g.
ops::BitAnd
), as in flags & other
.
sourcepub const fn union(self, other: Self) -> Self
pub const fn union(self, other: Self) -> Self
Returns the union of between the flags in self
and other
.
Specifically, the returned set contains all flags which are
present in either self
or other
, including any which are
present in both (see Self::symmetric_difference
if that
is undesirable).
This is equivalent to using the |
operator (e.g.
ops::BitOr
), as in flags | other
.
sourcepub const fn difference(self, other: Self) -> Self
pub const fn difference(self, other: Self) -> Self
Returns the difference between the flags in self
and other
.
Specifically, the returned set contains all flags present in
self
, except for the ones present in other
.
It is also conceptually equivalent to the “bit-clear” operation:
flags & !other
(and this syntax is also supported).
This is equivalent to using the -
operator (e.g.
ops::Sub
), as in flags - other
.
sourcepub const fn symmetric_difference(self, other: Self) -> Self
pub const fn symmetric_difference(self, other: Self) -> Self
Returns the symmetric difference between the flags
in self
and other
.
Specifically, the returned set contains the flags present which
are present in self
or other
, but that are not present in
both. Equivalently, it contains the flags present in exactly
one of the sets self
and other
.
This is equivalent to using the ^
operator (e.g.
ops::BitXor
), as in flags ^ other
.
sourcepub const fn complement(self) -> Self
pub const fn complement(self) -> Self
Returns the complement of this set of flags.
Specifically, the returned set contains all the flags which are
not set in self
, but which are allowed for this type.
Alternatively, it can be thought of as the set difference
between Self::all()
and self
(e.g. Self::all() - self
)
This is equivalent to using the !
operator (e.g.
ops::Not
), as in !flags
.
Trait Implementations§
source§impl Binary for FallocateFlags
impl Binary for FallocateFlags
source§impl BitAnd for FallocateFlags
impl BitAnd for FallocateFlags
source§impl BitAndAssign for FallocateFlags
impl BitAndAssign for FallocateFlags
source§fn bitand_assign(&mut self, other: Self)
fn bitand_assign(&mut self, other: Self)
Disables all flags disabled in the set.
source§impl BitOr for FallocateFlags
impl BitOr for FallocateFlags
source§fn bitor(self, other: FallocateFlags) -> Self
fn bitor(self, other: FallocateFlags) -> Self
Returns the union of the two sets of flags.
source§type Output = FallocateFlags
type Output = FallocateFlags
|
operator.source§impl BitOrAssign for FallocateFlags
impl BitOrAssign for FallocateFlags
source§fn bitor_assign(&mut self, other: Self)
fn bitor_assign(&mut self, other: Self)
Adds the set of flags.
source§impl BitXor for FallocateFlags
impl BitXor for FallocateFlags
source§impl BitXorAssign for FallocateFlags
impl BitXorAssign for FallocateFlags
source§fn bitxor_assign(&mut self, other: Self)
fn bitxor_assign(&mut self, other: Self)
Toggles the set of flags.
source§impl Clone for FallocateFlags
impl Clone for FallocateFlags
source§fn clone(&self) -> FallocateFlags
fn clone(&self) -> FallocateFlags
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for FallocateFlags
impl Debug for FallocateFlags
source§impl Extend<FallocateFlags> for FallocateFlags
impl Extend<FallocateFlags> for FallocateFlags
source§fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
source§fn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
extend_one
)source§fn extend_reserve(&mut self, additional: usize)
fn extend_reserve(&mut self, additional: usize)
extend_one
)source§impl FromIterator<FallocateFlags> for FallocateFlags
impl FromIterator<FallocateFlags> for FallocateFlags
source§fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
source§impl Hash for FallocateFlags
impl Hash for FallocateFlags
source§impl LowerHex for FallocateFlags
impl LowerHex for FallocateFlags
source§impl Not for FallocateFlags
impl Not for FallocateFlags
source§impl Octal for FallocateFlags
impl Octal for FallocateFlags
source§impl Ord for FallocateFlags
impl Ord for FallocateFlags
source§fn cmp(&self, other: &FallocateFlags) -> Ordering
fn cmp(&self, other: &FallocateFlags) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for FallocateFlags
impl PartialEq for FallocateFlags
source§impl PartialOrd for FallocateFlags
impl PartialOrd for FallocateFlags
source§impl Sub for FallocateFlags
impl Sub for FallocateFlags
source§impl SubAssign for FallocateFlags
impl SubAssign for FallocateFlags
source§fn sub_assign(&mut self, other: Self)
fn sub_assign(&mut self, other: Self)
Disables all flags enabled in the set.
source§impl UpperHex for FallocateFlags
impl UpperHex for FallocateFlags
impl Copy for FallocateFlags
impl Eq for FallocateFlags
impl StructuralPartialEq for FallocateFlags
Auto Trait Implementations§
impl Freeze for FallocateFlags
impl RefUnwindSafe for FallocateFlags
impl Send for FallocateFlags
impl Sync for FallocateFlags
impl Unpin for FallocateFlags
impl UnwindSafe for FallocateFlags
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)