From c4da7817b4c8dd71b2a07d4d1c46b486ec57eeb4 Mon Sep 17 00:00:00 2001
From: Garrett D'Amore <garrett@damore.org>
Date: Mon, 5 Mar 2018 17:27:04 -0800
Subject: fixes #265 nngcat should support persistent ZT nodes fixes #267
 zerotier transport should lock ZT_HOME

---
 src/platform/windows/win_file.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'src/platform/windows/win_file.c')

diff --git a/src/platform/windows/win_file.c b/src/platform/windows/win_file.c
index 2a9504aa..515647e0 100644
--- a/src/platform/windows/win_file.c
+++ b/src/platform/windows/win_file.c
@@ -342,4 +342,28 @@ nni_plat_file_basename(const char *name)
 	return (name);
 }
 
+int
+nni_plat_file_lock(const char *path, nni_plat_flock *lk)
+{
+	HANDLE h;
+
+	// On Windows we do not have to explicitly lock the file, the
+	// dwShareMode being set to zeor effectively prevents it.
+	h = CreateFile(path, GENERIC_WRITE, 0, NULL, OPEN_ALWAYS,
+	    FILE_ATTRIBUTE_NORMAL, NULL);
+	if (h == INVALID_HANDLE_VALUE) {
+		return (nni_win_error(GetLastError()));
+	}
+	lk->h = h;
+	return (0);
+}
+
+void
+nni_plat_file_unlock(nni_plat_flock *lk)
+{
+	HANDLE h = lk->h;
+	(void) CloseHandle(h);
+	lk->h = INVALID_HANDLE_VALUE;
+}
+
 #endif // NNG_PLATFORM_WINDOWS
\ No newline at end of file
-- 
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