Improved Windows compatibility for machine command

Signed-off-by: Arthur Sengileyev <arthur.sengileyev@gmail.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/pkg/machine/qemu/machine_unix.go b/pkg/machine/qemu/machine_unix.go
new file mode 100644
index 000000000..84ee191d1
--- /dev/null
+++ b/pkg/machine/qemu/machine_unix.go
@@ -0,0 +1,33 @@
+//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd
+// +build darwin dragonfly freebsd linux netbsd openbsd
+
+package qemu
+
+import (
+	"bytes"
+	"fmt"
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+func isProcessAlive(pid int) bool {
+	err := unix.Kill(pid, syscall.Signal(0))
+	if err == nil || err == unix.EPERM {
+		return true
+	}
+	return false
+}
+
+func checkProcessStatus(processHint string, pid int, stderrBuf *bytes.Buffer) error {
+	var status syscall.WaitStatus
+	pid, err := syscall.Wait4(pid, &status, syscall.WNOHANG, nil)
+	if err != nil {
+		return fmt.Errorf("failed to read qem%su process status: %w", processHint, err)
+	}
+	if pid > 0 {
+		// child exited
+		return fmt.Errorf("%s exited unexpectedly with exit code %d, stderr: %s", processHint, status.ExitStatus(), stderrBuf.String())
+	}
+	return nil
+}