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.
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.
- 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()
Ollie Agent
Levi Neely