Platform-dispatched constants where Linux and macOS diverge:
TIOCSWINSZ, O_NONBLOCK, MsghdrDarwin struct (4-byte msg_iovlen
and msg_controllen vs Linux's 8-byte size_t fields), and split
recvmsg into Linux/Darwin typed variants so scm_rights uses the
correct struct per platform.
Also: app settings dir uses ~/Library/Application Support on
macOS, removed hardcoded TERMINFO from pane spawn env, removed
debug print from native_pty resize.
Co-Authored-By: Claude <noreply@anthropic.com>
macOS cmsghdr uses socklen_t (4 bytes) for cmsg_len, not size_t
(8 bytes like Linux). The Dart FFI struct was reading at wrong offsets
causing SCM_RIGHTS fd transfer to fail. Added CmsghdrDarwin with
Uint32 cmsg_len alongside the existing Linux layout.
SOL_SOCKET is 0xffff on macOS (was hardcoded to 1 for Linux).
Now platform-detected.
Switched from ad-hoc to Apple Development signing with team ID.
Removed app sandbox from entitlements — proper signing makes it
unnecessary. All SBPL hacks eliminated.
PtySession.spawn() runs recvFd in a child isolate to avoid blocking
the backend isolate's event loop.
Terminal testmode test now passes: pane.spawn via backend isolate
successfully forks and execs the shell.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
PtySession wraps the ptyc helper: socketpair + Process.start + recvmsg
with SCM_RIGHTS for master-fd transfer, a background isolate that
loops on blocking read() and posts byte chunks, plus write/resize/
kill/close. close() SIGTERMs the child so the PTY's EOF wakes the
reader naturally; SIGKILL + fd close + isolate kill cover the edge
where the shell ignores SIGTERM — avoids the known Linux quirk where
closing an fd doesn't unblock an in-flight read() on it.
Env defaults stamp TERM=xterm-256color, COLORTERM=truecolor,
CLICOLOR_FORCE=1 so shells + tmux + Claude emit 24-bit sequences
that xterm.dart can render. User env (HOME / USER / SHELL) still
inherits via mergePtyEnv().
ffi: 2.1.3 added as a runtime dep — the FFI bindings for socketpair,
recvmsg, read/write, and ioctl(TIOCSWINSZ) need an allocator we're
not writing by hand. Justified in pubspec + listed in licenses.yaml
per D-042.
make test-core (ci/test_core.sh) runs the Flutter-free core tests
under a 120s hard timeout with setsid + process-group kill, wired
ahead of the fast app tests in push-check so a hung PTY test can't
wedge a pre-push. Current core suite: 24 tests in ~1s.
Co-Authored-By: Claude <noreply@anthropic.com>
jpmschweitzerandClaude