runtime: add pipe/pipe2 on Solaris

This adds pipe/pipe2 on Solaris as they exist on other Unix systems.
They were not added previously because Solaris does not need them
for netpollBreak. They are added now in preparation for using pipes
in TestSignalM.

Updates #35276

Change-Id: I53dfdf077430153155f0a79715af98b0972a841c
Reviewed-on: https://go-review.googlesource.com/c/go/+/206077
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/runtime/nbpipe_fcntl_libc_test.go b/src/runtime/nbpipe_fcntl_libc_test.go
new file mode 100644
index 0000000000..70f4b8348b
--- /dev/null
+++ b/src/runtime/nbpipe_fcntl_libc_test.go
@@ -0,0 +1,18 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix solaris
+
+package runtime_test
+
+import (
+	"runtime"
+	"syscall"
+)
+
+// Call fcntl libc function rather than calling syscall.
+func fcntl(fd uintptr, cmd int, arg uintptr) (uintptr, syscall.Errno) {
+	res, errno := runtime.Fcntl(fd, uintptr(cmd), arg)
+	return res, syscall.Errno(errno)
+}