Struct clone_args_t

#[repr(C)]
pub struct clone_args_t {
    pub flags: u64,
    pub pidfd: u64,
    pub child_tid: u64,
    pub parent_tid: u64,
    pub exit_signal: u64,
    pub stack: usize,
    pub stack_size: u64,
    pub tls: u64,
    pub set_tid: u64,
    pub set_tid_size: u64,
    pub cgroup: u64,
}

Available on crate feature dep_nc only.

Arguments for the clone3 syscall.

The structure is versioned by size and thus extensible. New struct members must go at the end of the struct and must be properly 64bit aligned.

Fields

flags: u64

Flags for the new process. All flags are valid except for CSIGNAL and CLONE_DETACHED.

pidfd: u64

If CLONE_PIDFD is set, a pidfd will be returned in this argument.

child_tid: u64

If CLONE_CHILD_SETTID is set, the TID of the child process will be returned in the child’s memory.

parent_tid: u64

If CLONE_PARENT_SETTID is set, the TID of the child process will be returned in the parent’s memory.

exit_signal: u64

The exit_signal the parent process will be sent when the child exits.

stack: usize

Specify the location of the stack for the child process.

Note, @stack is expected to point to the lowest address. The stack direction will be determined by the kernel and set up appropriately based on @stack_size.

stack_size: u64

The size of the stack for the child process.

tls: u64

If CLONE_SETTLS is set, the tls descriptor is set to tls.

set_tid: u64

Pointer to an array of type *pid_t.

The size of the array is defined using set_tid_size. This array is used to select PIDs/TIDs for newly created processes. The first element in this defines the PID in the most nested PID namespace. Each additional element in the array defines the PID in the parent PID namespace of the original PID namespace. If the array has less entries than the number of currently nested PID namespaces only the PIDs in the corresponding namespaces are set.

set_tid_size: u64

This defines the size of the array referenced in set_tid.

This cannot be larger than the kernel’s limit of nested PID namespaces.

cgroup: u64

If CLONE_INTO_CGROUP is specified set this to a file descriptor for the cgroup.

Trait Implementations

impl Clone for clone_args_t

fn clone(&self) -> clone_args_t

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for clone_args_t

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

Formats the value using the given formatter.

impl Default for clone_args_t

fn default() -> clone_args_t

Returns the “default value” for a type.