e2e: make e2e tests runnable on !linux (#651)

e2e/main_test.go

@@ -13,7 +13,6 @@ import (
 	"os/exec"
 	"strconv"
 	"strings"
-	"syscall"
 	"testing"
 	"time"
 
@@ -59,7 +58,7 @@ func runCmd(cmd string, args ...string) (*exec.Cmd, io.Writer, io.Reader, error)
 	newargs := append([]string{cmd}, args...)
 	newargs = append([]string{"-i0", "-o0", "-e0"}, newargs...)
 	c := exec.Command("stdbuf", newargs...)
-	c.SysProcAttr = &syscall.SysProcAttr{Pdeathsig: syscall.SIGTERM}
+	c.SysProcAttr = sigtermForPdeathsig
 	f, err := pty.Start(c)
 	if err != nil {
 		return nil, nil, nil, err

e2e/pdeathsig_linux_test.go

@@ -0,0 +1,9 @@
+//go:build linux
+
+package e2e_test
+
+import (
+	"syscall"
+)
+
+var sigtermForPdeathsig = &syscall.SysProcAttr{Pdeathsig: syscall.SIGTERM}

e2e/pdeathsig_other_test.go

@@ -0,0 +1,9 @@
+//go:build !linux
+
+package e2e_test
+
+import (
+	"syscall"
+)
+
+var sigtermForPdeathsig *syscall.SysProcAttr