Files
deepseek-harness/packages/subprocess
Tianyi Cui 5717726835 subprocess: one explicit env channel on the spawn spec
Drop SubprocessSpawnSpec.dshEnv and splitEnvChannels(); childEnv() is now
scrubbed-base + explicit entries with no namespace validation. The invariant
dropped is the reserved-namespace check on explicit entries (DSH_* rejected
from env, non-DSH_* rejected from dshEnv). Explicit-entry trust already
covers it: an explicit credential-shaped entry has always merged after the
scrub as a deliberate caller opt-in, and an explicit DSH_* entry is the same
deliberate act — the staleness invariant lives entirely in scrubbedParentEnv
dropping AMBIENT credential-shaped and DSH_* names, which stays. The
validation's only observed effect was rejecting legitimate explicit entries:
both recent CI breakages (DSH_GATE_CONCURRENCY exported into every job
crashing lsp specs, DSH_PERMISSION_MODE in acp config.env crashing the
child spawn) were this check firing on values a caller meant to pass, each
fixed by routing around the bureaucracy the seam itself imposed.

The bash seam keeps its own request/spec dshEnv field: that is bash-owned
trusted-plugin vocabulary (the ctx.bashEnv collected overlay) whose merge-last
position guarantees a caller env entry cannot displace a managed fact;
bash-local now flattens ENV_OVERRIDES -> spec.env -> spec.dshEnv into the
seam's one env map. subagent-acp and lsp-local pass their single config env
map straight through. DshEnvironment/DshEnvironmentKey/DSH_ENV_PREFIX stay on
the subprocess seam as the namespace vocabulary (bash re-exports them;
scrubbedParentEnv filters on the prefix).

Tests: the two channel-rejection specs and the splitEnvChannels partition
spec are deleted; one spawn spec now proves an explicit DSH_* env entry
reaches the child while an ambient one is scrubbed; the acp/lsp forwarding
specs keep their MOCK_ECHO_ENV / LSP_FAKE_ECHO_ENV assertions with the split
comments rewritten to merge-after-scrub. Docs (en+zh, re-recorded) and the
owning Agent Notes updated; cordis api/services catalogs regenerated.
2026-07-27 04:14:51 +08:00
..

subprocess/ — subprocess capability family

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The shared home for spawning managed child-process trees: fully-specified spawn specs with Node-shaped per-stream stdio dispositions (raw pipes, inherit, bounded tail-keep collection with spill files), the one credential scrub every harness spawner uses, offset-based incremental reads, tree-scoped signalling with SIGTERM→grace→SIGKILL escalation, and the cooperative dispose ladder. Command defaulting, shell semantics, deadlines, protocol framing, and presentation stay with consumers — the bash executors, the LSP host, and the ACP subagent backend. See the subprocess seam Agent Note.

Package ctx key Role
subprocess (@deepseek-ai/dsh-subprocess) ctx.subprocess The seam: abstract SubprocessService.spawn(spec), the fully-explicit SubprocessSpawnSpec with per-stream stdio dispositions, SubprocessHandle (streams, offset-based readers, kill/terminate/waitForExit/dispose), and the shared scrub + DSH_*/CollectedOutput vocabulary
subprocess-local (@deepseek-ai/dsh-subprocess-local) The local implementation: detached process trees, per-disposition stream wiring, tail-keep truncation with bounded private spill files, the DSH_* merge order, tree signalling with escalation, the dispose ladder, and terminate-and-join disposal

The service owns process lifetime across consumer reloads; consumers own what a process means (a bash command, a future non-shell runner) and every default that shapes one.