1 files changed, 96 insertions, 0 deletions
diff --git a/source4/ntvfs/sysdep/sys_notify.c b/source4/ntvfs/sysdep/sys_notify.c
new file mode 100644
index 0000000000..aedfd2a7de
--- /dev/null
+++ b/source4/ntvfs/sysdep/sys_notify.c
@@ -0,0 +1,96 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/*
+  abstract the various kernel interfaces to change notify into a
+  single Samba friendly interface
+*/
+
+#include "includes.h"
+#include "system/filesys.h"
+#include "ntvfs/sysdep/sys_notify.h"
+#include "lib/events/events.h"
+#include "dlinklist.h"
+
+/* list of registered backends */
+static struct sys_notify_backend *backends;
+
+
+/*
+  initialise a system change notify backend
+*/
+struct sys_notify_context *sys_notify_init(int snum,
+					   TALLOC_CTX *mem_ctx, 
+					   struct event_context *ev)
+{
+	struct sys_notify_context *ctx;
+	const char *bname;
+	struct sys_notify_backend *b;
+
+	if (backends == NULL) {
+		return NULL;
+	}
+
+	if (ev == NULL) {
+		ev = event_context_find(mem_ctx);
+	}
+
+	ctx = talloc_zero(mem_ctx, struct sys_notify_context);
+	if (ctx == NULL) {
+		return NULL;
+	}
+
+	ctx->ev = ev;
+
+	bname = lp_parm_string(snum, "notify", "backend");
+	if (bname == NULL) {
+		bname = backends->name;
+	}
+
+	for (b=backends;b;b=b->next) {
+		if (strcasecmp(b->name, bname) == 0) break;
+	}
+
+	if (b != NULL) {
+		ctx->name = b->name;
+		ctx->notify_watch = b->notify_watch;
+	}
+
+	return ctx;
+}
+
+/*
+  add a watch
+*/
+NTSTATUS sys_notify_watch(struct sys_notify_context *ctx, const char *dirpath,
+			  uint32_t filter, sys_notify_callback_t callback,
+			  void *private, void **handle)
+{
+	return ctx->notify_watch(ctx, dirpath, filter, callback, private, handle);
+}
+
+/*
+  register a notify backend
+*/
+NTSTATUS sys_notify_register(struct sys_notify_backend *backend)
+{
+	DLIST_ADD(backends, backend);
+	return NT_STATUS_OK;
+}