Struct sys_mount::UnmountFlags
source · [−]pub struct UnmountFlags { /* private fields */ }
Expand description
Flags which may be specified when unmounting a file system.
Implementations
sourceimpl UnmountFlags
impl UnmountFlags
sourcepub const FORCE: Self
pub const FORCE: Self
Force unmount even if busy. This can cause data loss. (Only for NFS mounts.)
sourcepub const DETACH: Self
pub const DETACH: Self
Perform a lazy unmount: make the mount point unavailable for new accesses, and actually perform the unmount when the mount point ceases to be busy.
sourcepub const EXPIRE: Self
pub const EXPIRE: Self
Mark the mount point as expired. If a mount point is not currently in use, then an initial call to umount2() with this flag fails with the error EAGAIN, but marks the mount point as expired. The mount point remains expired as long as it isn’t accessed by any process. A second umount2() call specifying MNT_EXPIRE unmounts an expired mount point. This flag cannot be specified with either MNT_FORCE or MNT_DETACH.
sourcepub const NOFOLLOW: Self
pub const NOFOLLOW: Self
Don’t dereference target if it is a symbolic link. This flag allows security problems to be avoided in set-user-ID-root programs that allow unprivileged users to unmount file systems.
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
sourceimpl Binary for UnmountFlags
impl Binary for UnmountFlags
sourceimpl BitAnd<UnmountFlags> for UnmountFlags
impl BitAnd<UnmountFlags> for UnmountFlags
sourceimpl BitAndAssign<UnmountFlags> for UnmountFlags
impl BitAndAssign<UnmountFlags> for UnmountFlags
sourcefn bitand_assign(&mut self, other: Self)
fn bitand_assign(&mut self, other: Self)
Disables all flags disabled in the set.
sourceimpl BitOr<UnmountFlags> for UnmountFlags
impl BitOr<UnmountFlags> for UnmountFlags
sourcefn bitor(self, other: UnmountFlags) -> Self
fn bitor(self, other: UnmountFlags) -> Self
Returns the union of the two sets of flags.
type Output = Self
type Output = Self
The resulting type after applying the |
operator.
sourceimpl BitOrAssign<UnmountFlags> for UnmountFlags
impl BitOrAssign<UnmountFlags> for UnmountFlags
sourcefn bitor_assign(&mut self, other: Self)
fn bitor_assign(&mut self, other: Self)
Adds the set of flags.
sourceimpl BitXor<UnmountFlags> for UnmountFlags
impl BitXor<UnmountFlags> for UnmountFlags
sourceimpl BitXorAssign<UnmountFlags> for UnmountFlags
impl BitXorAssign<UnmountFlags> for UnmountFlags
sourcefn bitxor_assign(&mut self, other: Self)
fn bitxor_assign(&mut self, other: Self)
Toggles the set of flags.
sourceimpl Clone for UnmountFlags
impl Clone for UnmountFlags
sourcefn clone(&self) -> UnmountFlags
fn clone(&self) -> UnmountFlags
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for UnmountFlags
impl Debug for UnmountFlags
sourceimpl Extend<UnmountFlags> for UnmountFlags
impl Extend<UnmountFlags> for UnmountFlags
sourcefn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
Extends a collection with the contents of an iterator. Read more
sourcefn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
extend_one
)Extends a collection with exactly one element.
sourcefn extend_reserve(&mut self, additional: usize)
fn extend_reserve(&mut self, additional: usize)
extend_one
)Reserves capacity in a collection for the given number of additional elements. Read more
sourceimpl FromIterator<UnmountFlags> for UnmountFlags
impl FromIterator<UnmountFlags> for UnmountFlags
sourcefn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
Creates a value from an iterator. Read more
sourceimpl Hash for UnmountFlags
impl Hash for UnmountFlags
sourceimpl LowerHex for UnmountFlags
impl LowerHex for UnmountFlags
sourceimpl Not for UnmountFlags
impl Not for UnmountFlags
sourceimpl Octal for UnmountFlags
impl Octal for UnmountFlags
sourceimpl Ord for UnmountFlags
impl Ord for UnmountFlags
sourceimpl PartialEq<UnmountFlags> for UnmountFlags
impl PartialEq<UnmountFlags> for UnmountFlags
sourcefn eq(&self, other: &UnmountFlags) -> bool
fn eq(&self, other: &UnmountFlags) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &UnmountFlags) -> bool
fn ne(&self, other: &UnmountFlags) -> bool
This method tests for !=
.
sourceimpl PartialOrd<UnmountFlags> for UnmountFlags
impl PartialOrd<UnmountFlags> for UnmountFlags
sourcefn partial_cmp(&self, other: &UnmountFlags) -> Option<Ordering>
fn partial_cmp(&self, other: &UnmountFlags) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
sourceimpl Sub<UnmountFlags> for UnmountFlags
impl Sub<UnmountFlags> for UnmountFlags
sourceimpl SubAssign<UnmountFlags> for UnmountFlags
impl SubAssign<UnmountFlags> for UnmountFlags
sourcefn sub_assign(&mut self, other: Self)
fn sub_assign(&mut self, other: Self)
Disables all flags enabled in the set.
sourceimpl UpperHex for UnmountFlags
impl UpperHex for UnmountFlags
impl Copy for UnmountFlags
impl Eq for UnmountFlags
impl StructuralEq for UnmountFlags
impl StructuralPartialEq for UnmountFlags
Auto Trait Implementations
impl RefUnwindSafe for UnmountFlags
impl Send for UnmountFlags
impl Sync for UnmountFlags
impl Unpin for UnmountFlags
impl UnwindSafe for UnmountFlags
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more