Struct flock 

#[repr(C)]
pub struct flock {
    pub l_type: c_short,
    pub l_whence: c_short,
    pub l_start: off_t,
    pub l_len: off_t,
    pub l_pid: pid_t,
}

See https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/fcntl.h.html.

Fields

l_type: c_short

Type of lock; F_RDLCK, F_WRLCK, F_UNLCK.

l_whence: c_short

Flag for starting offset.

l_start: off_t

Relative offset in bytes.

l_len: off_t

Size; if 0 then until EOF.

l_pid: pid_t

For a process-owned file lock, ignored on input or the process ID of the owning process on output; for an OFD-owned file lock, zero on input or (pid_t) - 1 on output.

Trait Implementations

impl Clone for flock

fn clone(&self) -> flock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for flock

fn default() -> flock

Returns the “default value” for a type.

impl Copy for flock