Struct Trampoline 

pub struct Trampoline {
    pub enter: Option<(Arc<View>, Vec<u8>)>,
    pub chdir: Option<Vec<u8>>,
    pub env: Option<Vec<Vec<u8>>>,
    pub new_session: bool,
    pub die_with_parent: bool,
    pub seccomp_programs: Vec<Vec<u8>>,
    pub info_fds: Vec<i32>,
    pub json_status_fds: Vec<i32>,
    pub warnings: Vec<Vec<u8>>,
    pub exit: Option<(i32, Vec<u8>, bool)>,
}

What the trampoline does inside the tracee before exec’ing the plan.

Fields

enter: Option<(Arc<View>, Vec<u8>)>

The view the process enters at the real exec, with its working directory there as a guest path.

chdir: Option<Vec<u8>>

Host directory to chdir to first (with ptrace, where the kernel’s cwd is the real one).

env: Option<Vec<Vec<u8>>>

Environment to exec with, replacing the inherited one.

new_session: bool

setsid before the exec.

die_with_parent: bool

Die with SIGKILL when the parent dies.

seccomp_programs: Vec<Vec<u8>>

Classic BPF programs (raw sock_filter bytes) to install before the exec.

info_fds: Vec<i32>

Descriptors that receive {"child-pid": N} and are closed.

json_status_fds: Vec<i32>

Descriptors that receive {"child-pid": N} then {"exit-code": N}: the trampoline forks, and its parent stays to report.

warnings: Vec<Vec<u8>>

Lines printed on stderr before anything else.

exit: Option<(i32, Vec<u8>, bool)>

Print this and exit with the code instead of exec’ing: on stdout when the flag is set, else stderr.

Trait Implementations

impl Clone for Trampoline

fn clone(&self) -> Trampoline

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Trampoline

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

Formats the value using the given formatter.

impl Default for Trampoline

fn default() -> Trampoline

Returns the “default value” for a type.