Landlock breaks STDIOTunnel

[yichi-yang]

$ cat wireproxy.conf
[Interface]
PrivateKey = ...
Address = ...
DNS = ...

[Peer]
PublicKey = ...
Endpoint = ...

[STDIOTunnel]
Target = example.com:80

$ wireproxy -c wireproxy.conf
...
DEBUG: 2026/01/07 00:22:39 Routine: receive incoming v4 - started
DEBUG: 2026/01/07 00:22:39 Routine: receive incoming v6 - started
DEBUG: 2026/01/07 00:22:39 peer(...) - Sending handshake initiation
DEBUG: 2026/01/07 00:22:39 peer(...) - Received handshake response
ERROR: 2026/01/07 00:22:39 Failed to open /dev/stdout: open /dev/stdout: no such device or address

It seems STDIOTunnel tries to open stdout here

wireproxy/routine.go

Line 230 in 9dad356

stdout, err := os.OpenFile("/dev/stdout", os.O_WRONLY, 0)

but fails because of Landlock.

[yichi-yang]

This seems to work for me: #190