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Fix rootless launches with subordinate ID maps

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Resolve and verify canonical caller subordinate ranges, launch preparation and runtime workers through mapped causal acquisition, and keep runsc in the existing user namespace. Repair descriptor-relative OCI cleanup and absent-mount recovery so failed launches can progress to the corrected path.
This commit is contained in:
ms2k 2026-07-19 19:51:47 +09:00
commit 73e3e9fdee
1 changed files with 1424 additions and 172 deletions
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18
crates/lazaret-runtime-supervisor/src/supervision.rs
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@ -22,6 +22,7 @@ use lazaret_linux::process::{
ChildStandardIo, ParentEdge, ProcessOwnershipContext, RetainedProcess, TargetCommand,
child_broker,
};
use lazaret_linux::user_namespace::UserNamespaceMap;
use lazaret_state_anchor::{
RuntimeStateAnchorAbsenceAuthority, RuntimeStateAnchorMount, StateAnchorLaunchAuthority,
};
@ -328,6 +329,7 @@ pub struct RuntimeSupervisorLaunch {
runsc_command: RunscCommand,
state_anchor: Option<StateAnchorLaunchAuthority>,
git_routing: Option<RuntimeGitRoutingLaunch>,
user_namespace_map: Option<UserNamespaceMap>,
}
#[derive(Clone, Copy)]
@ -443,6 +445,7 @@ impl RuntimeSupervisorLaunch {
runsc_command: command.clone(),
state_anchor: None,
git_routing: None,
user_namespace_map: None,
};
launch.refresh_target()?;
Ok(launch)
@ -485,6 +488,16 @@ impl RuntimeSupervisorLaunch {
Ok(self)
}
/// Adds the canonical caller-configured user namespace required by the Runtime Supervisor.
///
/// # Errors
/// Refuses a non-canonical rootless map.
pub fn with_user_namespace_map(mut self, map: UserNamespaceMap) -> io::Result<Self> {
map.validate()?;
self.user_namespace_map = Some(map);
Ok(self)
}
fn refresh_target(&mut self) -> io::Result<()> {
let encoded = build_runtime_handoff(self)?;
let handoff = sealed_memfd("lazaret-runtime-handoff", &encoded)?;
@ -522,6 +535,11 @@ impl RuntimeSupervisorLaunch {
&self.runsc_command
}
#[must_use]
pub const fn user_namespace_map(&self) -> Option<&UserNamespaceMap> {
self.user_namespace_map.as_ref()
}
/// # Errors
/// Refuses a Runtime Supervisor target without the lifetime-pipe parent edge.
pub fn child_standard_io(