Struct nix::fcntl::OFlag

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

Available on crate feature fs, or crate feature term, or crate feature fanotify and Linux only.

Configuration options for opened files.

Implementations

impl OFlag

pub const O_ACCMODE: Self = _

Mask for the access mode of the file.

pub const O_APPEND: Self = _

Open the file in append-only mode.

pub const O_ASYNC: Self = _

Generate a signal when input or output becomes possible.

pub const O_CLOEXEC: Self = _

Closes the file descriptor once an execve call is made.

Also sets the file offset to the beginning of the file.

pub const O_CREAT: Self = _

Create the file if it does not exist.

pub const O_DIRECT: Self = _

Try to minimize cache effects of the I/O for this file.

pub const O_DIRECTORY: Self = _

If the specified path isn’t a directory, fail.

pub const O_DSYNC: Self = _

Implicitly follow each write() with an fdatasync().

pub const O_EXCL: Self = _

Error out if a file was not created.

pub const O_FSYNC: Self = _

Same as O_SYNC.

pub const O_LARGEFILE: Self = _

Allow files whose sizes can’t be represented in an off_t to be opened.

pub const O_NOATIME: Self = _

Do not update the file last access time during read(2)s.

pub const O_NOCTTY: Self = _

Don’t attach the device as the process’ controlling terminal.

pub const O_NDELAY: Self = _

Same as O_NONBLOCK.

pub const O_NOFOLLOW: Self = _

open() will fail if the given path is a symbolic link.

pub const O_NONBLOCK: Self = _

When possible, open the file in nonblocking mode.

pub const O_PATH: Self = _

Obtain a file descriptor for low-level access.

The file itself is not opened and other file operations will fail.

pub const O_RDONLY: Self = _

Only allow reading.

This should not be combined with O_WRONLY or O_RDWR.

pub const O_RDWR: Self = _

Allow both reading and writing.

This should not be combined with O_WRONLY or O_RDONLY.

pub const O_RSYNC: Self = _

Similar to O_DSYNC but applies to reads instead.

pub const O_SYNC: Self = _

Implicitly follow each write() with an fsync().

pub const O_TMPFILE: Self = _

Create an unnamed temporary file.

pub const O_TRUNC: Self = _

Truncate an existing regular file to 0 length if it allows writing.

pub const O_WRONLY: Self = _

Only allow writing.

This should not be combined with O_RDONLY or O_RDWR.

impl OFlag

pub const fn empty() -> Self

Get a flags value with all bits unset.

pub const fn all() -> Self

Get a flags value with all known bits set.

pub const fn bits(&self) -> c_int

Get the underlying bits value.

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

pub 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.

pub const fn from_bits_truncate(bits: c_int) -> Self

Convert from a bits value, unsetting any unknown bits.

pub const fn from_bits_retain(bits: c_int) -> Self

Convert from a bits value exactly.

pub 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.

pub const fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

pub const fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

Whether any set bits in a source flags value are also set in a target flags value.

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

Whether all set bits in a source flags value are also set in a target flags value.

pub fn insert(&mut self, other: Self)

The bitwise or (|) of the bits in two flags values.

pub fn remove(&mut self, other: Self)

The intersection of a source flags value with the complement of a target flags value (&!).

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

pub fn toggle(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in two flags values.

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

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

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

The bitwise and (&) of the bits in two flags values.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

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

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

The bitwise exclusive-or (^) of the bits in two flags values.

pub const fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

impl OFlag

pub const fn iter(&self) -> Iter<OFlag>

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.

pub const fn iter_names(&self) -> IterNames<OFlag>

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.

Trait Implementations

impl Binary for OFlag

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

Formats the value using the given formatter.

impl BitAnd for OFlag

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

The bitwise and (&) of the bits in two flags values.

type Output = OFlag

The resulting type after applying the & operator.

impl BitAndAssign for OFlag

fn bitand_assign(&mut self, other: Self)

The bitwise and (&) of the bits in two flags values.

impl BitOr for OFlag

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

The bitwise or (|) of the bits in two flags values.

type Output = OFlag

The resulting type after applying the | operator.

impl BitOrAssign for OFlag

fn bitor_assign(&mut self, other: Self)

The bitwise or (|) of the bits in two flags values.

impl BitXor for OFlag

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

The bitwise exclusive-or (^) of the bits in two flags values.

type Output = OFlag

The resulting type after applying the ^ operator.

impl BitXorAssign for OFlag

fn bitxor_assign(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in two flags values.

impl Clone for OFlag

fn clone(&self) -> OFlag

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OFlag

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

Formats the value using the given formatter.

impl Extend<OFlag> for OFlag

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

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

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl Flags for OFlag

const FLAGS: &'static [Flag<OFlag>] = _

The set of defined flags.

type Bits = i32

The underlying bits type.

fn bits(&self) -> c_int

Get the underlying bits value.

fn from_bits_retain(bits: c_int) -> OFlag

Convert from a bits value exactly.

fn empty() -> Self

Get a flags value with all bits unset.

fn all() -> Self

Get a flags value with all known bits set.

fn from_bits(bits: Self::Bits) -> Option<Self>

Convert from a bits value.

fn from_bits_truncate(bits: Self::Bits) -> Self

Convert from a bits value, unsetting any unknown bits.

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

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

fn iter(&self) -> Iter<Self>

Yield a set of contained flags values.

fn iter_names(&self) -> IterNames<Self>

Yield a set of contained named flags values.

fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

where Self: Sized,

Whether any set bits in a source flags value are also set in a target flags value.

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

where Self: Sized,

Whether all set bits in a source flags value are also set in a target flags value.

fn insert(&mut self, other: Self)

where Self: Sized,

The bitwise or (|) of the bits in two flags values.

fn remove(&mut self, other: Self)

where Self: Sized,

The intersection of a source flags value with the complement of a target flags value (&!).

fn toggle(&mut self, other: Self)

where Self: Sized,

The bitwise exclusive-or (^) of the bits in two flags values.

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

where Self: Sized,

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

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

The bitwise and (&) of the bits in two flags values.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

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

The bitwise exclusive-or (^) of the bits in two flags values.

fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

impl From<EventFFlags> for OFlag

Available on crate feature fanotify only.

fn from(event_f_flags: EventFFlags) -> Self

Converts to this type from the input type.

impl FromIterator<OFlag> for OFlag

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

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

impl Hash for OFlag

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 IntoIterator for OFlag

type Item = OFlag

The type of the elements being iterated over.

type IntoIter = Iter<OFlag>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl LowerHex for OFlag

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

Formats the value using the given formatter.

impl Not for OFlag

fn not(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

type Output = OFlag

The resulting type after applying the ! operator.

impl Octal for OFlag

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

Formats the value using the given formatter.

impl Ord for OFlag

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for OFlag

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for OFlag

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

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl PublicFlags for OFlag

type Primitive = i32

The type of the underlying storage.

type Internal = InternalBitFlags

The type of the internal field on the generated flags type.

impl Sub for OFlag

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

The intersection of a source flags value with the complement of a target flags value (&!).

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

type Output = OFlag

The resulting type after applying the - operator.

impl SubAssign for OFlag

fn sub_assign(&mut self, other: Self)

The intersection of a source flags value with the complement of a target flags value (&!).

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

impl TryFrom<OFlag> for EventFFlags

Available on crate feature fanotify only.

type Error = Errno

The type returned in the event of a conversion error.

fn try_from(o_flag: OFlag) -> Result<Self>

Performs the conversion.

impl UpperHex for OFlag

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

Formats the value using the given formatter.

impl Copy for OFlag

impl Eq for OFlag

impl StructuralPartialEq for OFlag