Struct nix::sys::memfd::MemFdCreateFlag
source · pub struct MemFdCreateFlag { /* private fields */ }
Expand description
Options that change the behavior of memfd_create
.
Implementations§
source§impl MemFdCreateFlag
impl MemFdCreateFlag
sourcepub const MFD_CLOEXEC: Self = _
pub const MFD_CLOEXEC: Self = _
Set the close-on-exec (FD_CLOEXEC
) flag on the new file descriptor.
By default, the new file descriptor is set to remain open across an execve
(the FD_CLOEXEC
flag is initially disabled). This flag can be used to change
this default. The file offset is set to the beginning of the file (see lseek
).
See also the description of the O_CLOEXEC
flag in open(2)
.
sourcepub const MFD_ALLOW_SEALING: Self = _
pub const MFD_ALLOW_SEALING: Self = _
Allow sealing operations on this file.
See also the file sealing notes given in memfd_create(2)
.
sourcepub const fn from_bits(bits: c_uint) -> Option<Self>
pub const fn from_bits(bits: c_uint) -> 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_uint) -> Self
pub const fn from_bits_truncate(bits: c_uint) -> Self
Convert from underlying bit representation, dropping any bits that do not correspond to flags.
sourcepub const unsafe fn from_bits_unchecked(bits: c_uint) -> Self
pub const unsafe fn from_bits_unchecked(bits: c_uint) -> 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 MemFdCreateFlag
impl Binary for MemFdCreateFlag
source§impl BitAnd for MemFdCreateFlag
impl BitAnd for MemFdCreateFlag
source§impl BitAndAssign for MemFdCreateFlag
impl BitAndAssign for MemFdCreateFlag
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 MemFdCreateFlag
impl BitOr for MemFdCreateFlag
source§fn bitor(self, other: MemFdCreateFlag) -> Self
fn bitor(self, other: MemFdCreateFlag) -> Self
Returns the union of the two sets of flags.
source§type Output = MemFdCreateFlag
type Output = MemFdCreateFlag
|
operator.source§impl BitOrAssign for MemFdCreateFlag
impl BitOrAssign for MemFdCreateFlag
source§fn bitor_assign(&mut self, other: Self)
fn bitor_assign(&mut self, other: Self)
Adds the set of flags.
source§impl BitXor for MemFdCreateFlag
impl BitXor for MemFdCreateFlag
source§impl BitXorAssign for MemFdCreateFlag
impl BitXorAssign for MemFdCreateFlag
source§fn bitxor_assign(&mut self, other: Self)
fn bitxor_assign(&mut self, other: Self)
Toggles the set of flags.
source§impl Clone for MemFdCreateFlag
impl Clone for MemFdCreateFlag
source§fn clone(&self) -> MemFdCreateFlag
fn clone(&self) -> MemFdCreateFlag
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for MemFdCreateFlag
impl Debug for MemFdCreateFlag
source§impl Extend<MemFdCreateFlag> for MemFdCreateFlag
impl Extend<MemFdCreateFlag> for MemFdCreateFlag
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<MemFdCreateFlag> for MemFdCreateFlag
impl FromIterator<MemFdCreateFlag> for MemFdCreateFlag
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 MemFdCreateFlag
impl Hash for MemFdCreateFlag
source§impl LowerHex for MemFdCreateFlag
impl LowerHex for MemFdCreateFlag
source§impl Not for MemFdCreateFlag
impl Not for MemFdCreateFlag
source§impl Octal for MemFdCreateFlag
impl Octal for MemFdCreateFlag
source§impl Ord for MemFdCreateFlag
impl Ord for MemFdCreateFlag
source§fn cmp(&self, other: &MemFdCreateFlag) -> Ordering
fn cmp(&self, other: &MemFdCreateFlag) -> 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 MemFdCreateFlag
impl PartialEq for MemFdCreateFlag
source§impl PartialOrd for MemFdCreateFlag
impl PartialOrd for MemFdCreateFlag
source§impl Sub for MemFdCreateFlag
impl Sub for MemFdCreateFlag
source§impl SubAssign for MemFdCreateFlag
impl SubAssign for MemFdCreateFlag
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 MemFdCreateFlag
impl UpperHex for MemFdCreateFlag
impl Copy for MemFdCreateFlag
impl Eq for MemFdCreateFlag
impl StructuralPartialEq for MemFdCreateFlag
Auto Trait Implementations§
impl Freeze for MemFdCreateFlag
impl RefUnwindSafe for MemFdCreateFlag
impl Send for MemFdCreateFlag
impl Sync for MemFdCreateFlag
impl Unpin for MemFdCreateFlag
impl UnwindSafe for MemFdCreateFlag
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
)