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ENV_HANDOFF_INIT

microsandbox_protocol

Constant ENV_HANDOFF_INIT 

Source 
pub const ENV_HANDOFF_INIT: &str = "MSB_HANDOFF_INIT";
Expand description

Environment variable selecting a guest init binary for PID 1 handoff.

When set, agentd performs initial setup (mounts, runtime dirs), then forks. The parent execs the binary at this path, becoming the new PID 1. The child stays alive as a normal grandchild process serving host requests over virtio-serial.

Format: bare absolute path inside the guest rootfs, or the literal sentinel HANDOFF_INIT_AUTO which triggers a candidate probe in agentd (see HANDOFF_INIT_AUTO_CANDIDATES).

Examples:

  • MSB_HANDOFF_INIT=/lib/systemd/systemd
  • MSB_HANDOFF_INIT=auto