Writing to session/{s}/agent/new with a prompt= key now blocks
until the agent completes its task, then returns the reply and
destroys the transient agent. Without prompt=, behaves as before
(creates agent, returns ID).
Also:
- Move ParsePayload/UnescapeValue to shared ollie/toolsrv package
- Remove duplicate implementations from cmd/toolsrv/internal/server
- Add session.CreateAgentWithParams for direct AgentParams usage
- Eliminate flattenParams/unescapeValue redundancy in fs package
Read, Write, and Rdwr are the three atomic 9P operations:
- Read: non-blocking read
- Write: non-blocking write (fire-and-forget)
- Rdwr: atomic write-then-read (blocking, produces result)
BlockOnce and Stream are special cases of Read.
Rdwr is its own primitive — not a variant of either.
All foreground tool calls now acquire a lock based on the tool's
declared scope and file path before execution:
- scope "read": no lock (reads never conflict)
- scope "write": exclusive lock on the file path
- scope "global": exclusive global lock (serializes with everything)
This ensures writes to the same path serialize regardless of which
agent initiated the call, enabling safe parallel sub-agents within
a session without explicit coordination.
Cross-session serialization (shared toolsrv per host) is left as
future work.
- Remove /tools from olliesrv root (toolsrv owns all tool state)
- Add /all file to toolsrv namespace (lists all available tools on disk)
- Add ListAllTools() to toolsrv client library
- Add tools_all ctl command to agent (reads from toolsrv/all)
- Update system prompt with tools_all usage
On context cancellation, close the connection first to unblock
ReadFcall. Then wait for in-flight handlers, drain the response
channel, and wait for the writer to finish. No writes hit a
closed socket.
BlockOnce now takes a value-reader and a signal source. The framework
handles the blocking loop: read → compare hash to base → if different
return → else wait on signal or timeout.
On timeout (ctx.Done), returns empty (not error) so clients re-open
cleanly.
BlockOnceRaw retained for queue-style handlers (bypass/pending,
proc/wait) that manage their own blocking.
EventValue adapter wraps a <-chan Event into BlockOnce-compatible
(readFn, signalFn) pair via a thin goroutine.
- ResolveTool now returns cmd field as-is instead of trying to resolve
it as a binary path. This allows meta-only tools to use full shell
command strings with env vars, pipes, and subshells.
- Prepend ~/.config/ollie/tools to PATH when executing tools so cmd
fields can reference other tools by name.
- toolsrv pushes <system-proc-complete> to agent prompt when bg proc exits
- Remove bgTracker and CollectInterrupts from olliesrv
- Add Cmd, AgentID, SessionID fields to Proc
- Add OnProcExit callback to State
- Add command field to Proc.Stat() output
- Detach background proc context from request context so processes survive
after the 9P request returns (fixes premature SIGTERM)
- Add /proc/list file to toolsrv showing all procs with state
- Show status (running/exited (N)) in agent proc list
- Keep exited procs in tracker until explicitly dismissed
- Skip 'list' entry in ListDetachedRaw
- Added BlockingReadMode() and StreamMode() handling to toolsrv's handleRead()
- Made NextPending() context-aware in both toolsrv and olliesrv bypass packages
- This fixes the bypass approval flow via 9P - reads now properly block until
a request is available and respect context cancellation
Wire context cancellation through the toolsrv 9P server so that
canceling a CallTool context properly terminates the running tool.
Changes:
- virtfs: Add Close() to File interface with CloseFn for Request handlers
- toolsrv/p9.go: Handle requests concurrently to allow Tclunk during
blocking Twrite; call entry.Close() in handleClunk
- toolsrv/internal/server/proc.go: Check ctx.Done() while waiting for
tool completion in NewProc
- Integration tests for context cancellation chain
The cancellation chain: client cancels ctx → fid.Close() → Tclunk →
handleClunk calls entry.Close() → closeFn cancels reqCtx → NewProc
sees ctx.Done() and returns ctx.Err()
bypass.Submit now takes a context and returns early when cancelled.
This allows the stop command to properly cancel pending bypass requests
that haven't been approved or denied yet.
The full context chain is now:
1. stop command -> Interrupt -> cancel actCtx
2. actCtx cancellation -> closes CallTool fid
3. toolsrv proc/new sees closed fid -> propagates ctx cancellation
4. ExecuteTool -> executeBypassDirect -> bypass.Submit
5. bypass.Submit returns ctx.Err() when context is cancelled
Remove RequestCtx variant - all Request handlers now take context.
This is required for proper cancellation of blocking operations
like tool execution when the client disconnects or stop is called.
- Add RequestCtx field to FsNodeDecl for handlers that need context
- Add RequestCtx() helper function in virtfs/decl.go
- Update builder.go to handle RequestCtx in validation and Open
- Use RequestCtx in toolsrv proc/new and proc/new.bg handlers
This allows the context to be cancelled when the 9P fid is closed,
enabling proper stop/interrupt of running tool calls.
The sudo credential broker was never functional and added complexity
without value. This removes:
- Sudo field from bypass Request structs (broker, client, toolsrv)
- Sudo parameter from EvaluateRequest interface and implementations
- Sudo/ResetsCounter fields from MetaFile and Variant structs
- sudo: true from system_logs.meta variants
- All sudo documentation from writing-tools.md, tool-registry.md,
core.md, evolution.md, and misc.md
Bypass remains fully functional for sandbox escapes. Tools that need
elevated privileges should handle that internally or be run manually.
This refactors the bypass (sandbox escape) mechanism to work with remote
toolsrv deployments. Previously, bypass used a Unix socket which only
works when toolsrv runs locally. Now:
1. toolsrv exposes bypass/{pending,resolve} 9P files
- pending: blocking read returns next bypass request as JSON
- resolve: write JSON {id, approved, error} to complete request
2. olliesrv reads bypass/pending in a loop per session
- Evaluates requests through the existing bypass broker
- Policy check, rate limiting, user notification all stay in olliesrv
- Writes approval/denial back to bypass/resolve
3. When approved, toolsrv executes the command directly (no sandbox)
- Execution happens on toolsrv's host (local or remote)
- Output streams back through the normal tool call path
This enables bypass to work when toolsrv is remote:
- User sees the approval notification locally
- Command executes on the remote host outside its sandbox
Architecture:
toolsrv (remote) olliesrv (local)
┌─────────────────┐ ┌──────────────────┐
│ sandboxed cmd │ │ bypass broker │
│ ↓ │ │ - policy │
│ bypass.Submit() │──────│ - notification │
│ ↓ │ 9P │ - rate limit │
│ wait for result │←─────│ - user approval │
│ ↓ │ └──────────────────┘
│ execute direct │
└─────────────────┘
The bypass broker requires a 'session' field in the JSON request
to identify which session is making the bypass request. The toolsrv
was sending requests without this field, causing 'denied (no session
identity)' errors.
Fix: Include OLLIE_SESSION_ID from environment in the bypass request.
Removed the named sandbox concept. One config file: sandbox.yaml
(installed to ~/.config/ollie/sandbox.yaml). Removed sandbox-remote.yaml,
moved restricted.yaml to doc/ as a sample. Removed the 'sandbox' arg
from tool dispatch.
The package defines the Server type and its namespace — 'fs' was a
leftover name from when it only held the filesystem spec. Now it's
the server definition. File renamed spec.go → server.go to match.
Each() now returns []FsNodeDecl directly. The Binding type was a
redundant subset of FsNodeDecl with a slightly different Remove
signature. Dynamic entries are now expressed uniformly — Remove,
Rename, Children, Aliases all live on FsNodeDecl like everything else.
Also added: Alias() and RenameNode() options, DirNode accepts
[]FsNodeDecl for passing pre-built child slices.
Spec() now takes *Server and all handlers are closures that capture it.
Removed Ctx type, type aliases, and separate handler functions.
The tree structure and behavior are declared together in one place.
The registry was keyed by agent ID but read it from a shared env map
(st.env["OLLIE_UNAME"]) that all agents overwrote — making it
effectively per-session with a race condition.
Fix: pass agent ID explicitly through the protocol at every call site.
- ctl protocol: 'load <agentID> <tool>', 'unload <agentID> <tool>'
- tools file: rdwr (Request) — write agent ID, read filtered list
- proc/new payload: 'agent=<id>' field required
- Client: SetAgentID() stores identity, included in all operations
- Empty agent ID is a hard error everywhere
- Setting OLLIE_UNAME via env ctl is blocked (prevents reintroduction)
Tools are now scoped per-agent within a session. The registry uses
OLLIE_UNAME (agent identity) to partition loaded tools. Each agent
sees only its own tools — load/unload/list/lookup all key on the
agent ID read from the toolsrv environment.
One toolsrv per session means the session-scoped map was unnecessary
indirection. Registry now tracks a flat map of loaded tools with no
session ID parameter. This eliminates the class of bugs where sessID
could be empty or mismatched between Load and Loaded calls.
Shell doesn't expand ~ in programmatically-passed arguments, so
toolsrv received literal ~/src/ollie as --cwd. Go's os/exec fails
with ENOENT on chdir before exec, breaking all tool execution.
Expand ~ at two boundaries:
- main.go: immediately after flag parsing
- proc.go SetCWD(): for runtime cwd changes via 9P
- Background procs get timeout=0 (no deadline) set by toolsrv at
the execution layer — not injected as an arg from olliesrv.
Foreground default remains 30s. User can still override via args.
- Timeout logic simplified: caller sets default, ExecuteTool honors it.
- System prompt: clarify background has no timeout, uses 'stop' not 'kill'
- architecture.md: document lifecycle (connection-based ownership)
- evolution.md: update interrupt section with streaming, lifecycle, id= format
- README.md: add parallel execution to capabilities table
- KillAll(): sends SIGKILL to all running proc groups on clean shutdown
- Pdeathsig: SIGKILL ensures child procs die if toolsrv crashes
- Shell tool: use subshell + set +e for streaming without exit propagation
- Fix integration test to match new error format
This is the connection-based ownership model: toolsrv death = proc death.
The session owns the toolsrv process, so session death cascades to all procs.
- Timeout: timeout=0 means no deadline (was defaulting to 30s)
- Signal: send to process group (-pgid) not just process; SIGTERM no longer
cancels context (only SIGKILL does); cmd.Cancel sends SIGTERM with 5s WaitDelay
- Streaming: background procs stream output in real-time via procWriter;
shell tool no longer buffers all output into a bash variable
- Proc tree: olliesrv exposes proc/{id}/out, proc/{id}/ctl, proc/{id}/status
as proper 9P directory (was broken flat file)
- Connection: proc handlers dial fresh toolsrv conn per request via
Session.DialToolServer() to avoid deadlocking the agent's blocked conn
- Stat format: key=value (exited=true, exit_code=N, id=N) matching client parser
- GC: procs auto-removed 10min after LastRead (exited procs only)
- Rename: PID -> ID throughout (synthetic, not OS PID)
- Ctl commands: term (SIGTERM), kill (SIGKILL), signal <n>, dismiss
- System prompt: correct ollie-9p commands for proc management
When a tool call includes "background": true, it executes via
proc/new.bg and returns immediately with a PID in a
<system-proc-background> tag. The agent tracks active background
processes and injects their output as <system-proc-interrupt> blocks
alongside subsequent tool results.
The model sees background updates without polling. It can react to
build failures, log events, etc. naturally. Kill via PID when done.
Implementation:
- toolsrv client: CallToolBackground (uses proc/new.bg as rdwr)
- toolsrv: proc/new.bg upgraded from write-only to request-response
- agent: bgTracker collects last 20 lines of output per proc
- agent loop: injects interrupts after execToolCalls, before h.update
- system prompt: documents the background mechanism and rules
- Move toolsrv logic into internal/{fs,exec,registry} packages to match
olliesrv's structure. server.go (9P protocol) stays at top level.
- Deduplicate parseKV/parsePayload: remove dead code from old spec9p.go,
single implementation in internal/fs/parse.go.
- Add structured logging via log/slog (replaces fmt.Fprintf to stderr).
- Standardize qid path hashing to fnv.New64a (matches olliesrv).
- Fix toolsrv process leaks:
- Add Pdeathsig to local spawn so toolsrv dies when olliesrv exits.
- Add idle timeout (30s with no connections after first client seen).
- ProcessKeeper.Dial() kills old process before respawning.
Split toolsrv/registry.go:
- cmd/toolsrv/registry.go: Registry type with session-scoped tool state
(Load, Unload, Loaded, Lookup, Revision methods)
- toolsrv/registry.go: shared types only (ToolInfo, ToolsPath, DiscoverTools)
The toolsrv/ package is now a pure client SDK:
- Dial, Conn for 9P connection
- ToolInfo, ToolResult, HostInfo types
- DiscoverTools for listing available tools
Server-only code lives in cmd/toolsrv/:
- Registry for session-scoped tool state
- 9P handlers and execution logic
- Sandbox integration
Move spawn.go from toolsrv/ to cmd/olliesrv/internal/toolclient/:
- Process, ProcessKeeper, Spawn, SpawnRemote now in toolclient package
- toolsrv/ now only contains client code (Dial, Conn, etc.)
This clarifies the architecture:
- toolsrv/ = client SDK for connecting to toolsrv
- cmd/toolsrv/ = the toolsrv server
- cmd/olliesrv/internal/toolclient/ = olliesrv's toolsrv process management
Removed ProcessKeeper tests from toolsrv integration tests since they
now belong to toolclient.
Ollie Agent
Levi Neely