1 files changed, 26 insertions, 0 deletions
diff --git a/src/syscall/syscall_illumos.go b/src/syscall/syscall_illumos.go
new file mode 100644
index 0000000..d043636
--- /dev/null
+++ b/src/syscall/syscall_illumos.go
@@ -0,0 +1,26 @@
+// Copyright 2020 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.
+
+//go:build illumos
+
+package syscall
+
+import "unsafe"
+
+// F_DUP2FD_CLOEXEC has different values on Solaris and Illumos.
+const F_DUP2FD_CLOEXEC = 0x24
+
+//go:cgo_import_dynamic libc_flock flock "libc.so"
+
+//go:linkname procFlock libc_flock
+
+var procFlock libcFunc
+
+func Flock(fd int, how int) error {
+	_, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procFlock)), 2, uintptr(fd), uintptr(how), 0, 0, 0, 0)
+	if errno != 0 {
+		return errno
+	}
+	return nil
+}