From 3db73735e9a8d88878bc9ee343f226c033320913 Mon Sep 17 00:00:00 2001 From: Gabriel Schneider Date: Tue, 29 Sep 2026 02:11:15 -0300 Subject: A command line cut across writes runs once whole, and look/exec answer per open A mount cuts a write at its message size, and each piece ran on its own: a line cut at the boundary ran as shell commands and a 50 KB Edit block broke. An open of look, exec, tagexec, any ctl or a column's exec now keeps an unfinished last line, or an Edit block still open, until its next write or its release, and never runs a fragment. The same open record holds what its last write touched, which a read on it answers (as /net/tcp/clone does); an open that never wrote reads the session's last as of its open. A release that runs a held line waits for quiet and counts as a change; a clicked line with a control character is still refused at its write. Tested in unit tests, fs.py (python client, 8 KiB) and selfmount.py (the kernel mount, a 1000-line seq burst and a 50 KB Edit block). Co-Authored-By: Claude Opus 5.5 --- src/9p_io.zig | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'src/9p_io.zig') diff --git a/src/9p_io.zig b/src/9p_io.zig index 0f5e0a77..72963e08 100644 --- a/src/9p_io.zig +++ b/src/9p_io.zig @@ -255,7 +255,7 @@ pub const Listener = struct { const refused = pardes.ctlfs.Reply.fail(req.tag, pardes.ctlfs.E.IO); return conn.reply(&refused, ""); } - if (!quiet and pardes.ctlfs.needsQuiet(req)) { + if (!quiet and pardes.ctlfs.needsQuiet(l.core, req)) { pardes.turn.parked = true; const later: pardes.ctlfs.Reply = .{ .tag = req.tag, .status = .again }; return conn.reply(&later, ""); @@ -263,6 +263,8 @@ pub const Listener = struct { const core = l.core; const epoch = pardes.turn.epoch; const restores = pardes.turn.restores; + // Asked first: a release that runs a held line has none after. + const changes = pardes.ctlfs.changesPane(core, req); const reply = core.serveFs(req); if (req.op == .release and quiet) l.collectOs(); // A read with nothing yet stays parked in the engine, and the core @@ -289,7 +291,7 @@ pub const Listener = struct { o.held = .{ .asker = conn, .req = req, .ticket = ticket }; return; } - if (!pardes.ctlfs.changesPane(req)) return conn.reply(&reply, core.fsPayload(reply)); + if (!changes) return conn.reply(&reply, core.fsPayload(reply)); // The editor draws the change and performs what it asked for; when // it asked for something -- a save, a shell, a watch -- the answer // waits until that is done, so `echo Save > exec` returns with the -- cgit v1.3