Re: [PATCH][RFC 10/12/1/5] SCST external modules support

[Vladislav Bolkhovitin <vst@vlnb.net>]

This patch contains SCST external modules support routines.

Signed-off-by: Vladislav Bolkhovitin <vst@vlnb.net>
---
 scst_module.c |   63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff -uprN orig/linux-2.6.33/drivers/scst/scst_module.c linux-2.6.33/drivers/scst/scst_module.c
--- orig/linux-2.6.33/drivers/scst/scst_module.c
+++ linux-2.6.33/drivers/scst/scst_module.c
@@ -0,0 +1,63 @@
+/*
+ *  scst_module.c
+ *
+ *  Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net>
+ *  Copyright (C) 2004 - 2005 Leonid Stoljar
+ *  Copyright (C) 2007 - 2010 ID7 Ltd.
+ *
+ *  Support for loading target modules. The usage is similar to scsi_module.c
+ *
+ *  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, version 2
+ *  of the License.
+ *
+ *  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.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <scst.h>
+
+static int __init init_this_scst_driver(void)
+{
+	int res;
+
+	res = scst_register_target_template(&driver_target_template);
+	TRACE_DBG("scst_register_target_template() returned %d", res);
+	if (res < 0)
+		goto out;
+
+#ifdef SCST_REGISTER_INITIATOR_DRIVER
+	driver_template.module = THIS_MODULE;
+	scsi_register_module(MODULE_SCSI_HA, &driver_template);
+	TRACE_DBG("driver_template.present=%d",
+	      driver_template.present);
+	if (driver_template.present == 0) {
+		res = -ENODEV;
+		MOD_DEC_USE_COUNT;
+		goto out;
+	}
+#endif
+
+out:
+	return res;
+}
+
+static void __exit exit_this_scst_driver(void)
+{
+
+#ifdef SCST_REGISTER_INITIATOR_DRIVER
+	scsi_unregister_module(MODULE_SCSI_HA, &driver_template);
+#endif
+
+	scst_unregister_target_template(&driver_target_template);
+	return;
+}
+
+module_init(init_this_scst_driver);
+module_exit(exit_this_scst_driver);