Struct OpenOptions 

pub struct OpenOptions {
    pub read: bool,
    pub write: bool,
    pub create: bool,
    pub create_new: bool,
    pub truncate: bool,
    pub mode: u32,
}

Plain record so it crosses FFI as a dictionary; constructors are Rust sugar. All field defaults are literals (bools false, mode 420 = 0o644), so keyword-style construction in the bindings does the right thing. There is deliberately no append flag: the server ignores open flags on writes, so appending is the explicit crate::Client::append composition.

Fields

read: bool

Open for reading.

write: bool

Open for writing.

create: bool

Open-or-create. Not a single wire op: composed as open, falling back to exclusive create, retrying on race.

create_new: bool

Fail with AlreadyExists unless this call creates the file. This is the atomic primitive (server creates are natively exclusive).

truncate: bool

Truncate to zero length on open. For a pre-existing file this is an extra setattr round trip after the open, NOT atomic with it.

mode: u32

Permission bits when the open creates the file. Default 0o644.

Implementations

impl OpenOptions

pub fn read_only() -> Self

read only.

pub fn write_only() -> Self

write only.

pub fn read_write() -> Self

read + write.

pub fn create(self, yes: bool) -> Self

Builder-style toggle for create.

pub fn create_new(self, yes: bool) -> Self

Builder-style toggle for create_new.

pub fn truncate(self, yes: bool) -> Self

Builder-style toggle for truncate.

pub fn mode(self, mode: u32) -> Self

Builder-style setter for the creation mode.

Trait Implementations

impl Clone for OpenOptions

fn clone(&self) -> OpenOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for OpenOptions

impl Debug for OpenOptions

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

Formats the value using the given formatter.

impl Default for OpenOptions

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for OpenOptions

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for OpenOptions

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.