linux/meta-virtualization.git/recipes-containers/vcontainer/files/vxn-oci-runtime, branch master

vxn: add Docker/Podman integration and CLI frontends

2026-02-26T01:05:01+00:00

Add vdkr/vpdmn as Dom0 target packages with Xen auto-detection, native Docker/Podman config sub-packages, and OCI runtime fixes for Docker compatibility (JSON logging, root.path, kill --all, monitor PID lifecycle). Signed-off-by: Bruce Ashfield

vxn: fix terminal mode hang and enable interactive container support

2026-02-26T01:05:01+00:00

The containerd shim's Create RPC hung indefinitely because go-runc captures the OCI runtime's stdout via a pipe, and cmd.Wait() blocks until all holders of the pipe's write end close it. The background monitor subshell inherited this pipe fd and held it open, preventing the shim from ever proceeding to ReceiveMaster() or calling Start. Fix by closing inherited stdout/stderr in the terminal-mode monitor with exec >/dev/null before entering the domain poll loop. Non-terminal mode is unaffected because the shim configures IO via FIFO dup2, where cmd.Wait() only waits for process exit. Additional changes for terminal mode support: - vxn-sendtty: set PTY to raw mode (cfmakeraw) before sending fd - vxn-oci-runtime: wait up to 5s for xenconsoled PTY, capture sendtty return code, write persistent debug file to /root/vxn-tty-debug, log every runtime invocation, remove stale debug logging - vxn-init.sh: add [vxn] diagnostic markers for terminal visibility, suppress kernel console messages early in interactive mode - vcontainer-preinit.sh: suppress kernel messages in quiet mode Signed-off-by: Bruce Ashfield

vxn: add containerd OCI runtime integration

2026-02-26T01:05:01+00:00

Add shell-based OCI runtime (vxn-oci-runtime) that enables containerd to manage Xen DomU containers through the standard runc shim. Non-terminal container output flows back to ctr via the shim's pipe mechanism. New files: - vxn-oci-runtime: OCI runtime (create/start/state/kill/delete/features/logs) - vxn-sendtty.c: SCM_RIGHTS helper for terminal mode PTY passing - containerd-shim-vxn-v2: PATH trick wrapper for runc shim coexistence - containerd-config-vxn.toml: CRI config (vxn default, runc fallback) - vctr: convenience wrapper injecting --runtime io.containerd.vxn.v2 Key design: - Monitor subprocess uses wait on xl console (not sleep-polling) for instant reaction when domain dies, then extracts output markers and writes to stdout (shim pipe -> containerd FIFO -> ctr client) - cmd_state checks monitor PID liveness (not domain status) to prevent premature cleanup race that killed monitor before output - cmd_delete always destroys remnant domains (no --force needed) - Coexists with runc: /usr/libexec/vxn/shim/runc symlink + PATH trick Verified: vctr run --rm, vctr run -d, vxn standalone, vxn daemon mode. Signed-off-by: Bruce Ashfield