linux_kernel/drivers/net/wireless/iwlwifi/mvm/debugfs.h

/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called COPYING.
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/

#define MVM_DEBUGFS_READ_FILE_OPS(name)					\
static const struct file_operations iwl_dbgfs_##name##_ops = {		\
	.read = iwl_dbgfs_##name##_read,				\
	.open = simple_open,						\
	.llseek = generic_file_llseek,					\
}

#define MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)		\
static ssize_t _iwl_dbgfs_##name##_write(struct file *file,		\
					 const char __user *user_buf,	\
					 size_t count, loff_t *ppos)	\
{									\
	argtype *arg = file->private_data;				\
	char buf[buflen] = {};						\
	size_t buf_size = min(count, sizeof(buf) -  1);			\
									\
	if (copy_from_user(buf, user_buf, buf_size))			\
		return -EFAULT;						\
									\
	return iwl_dbgfs_##name##_write(arg, buf, buf_size, ppos);	\
}									\

#define _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, buflen, argtype)		\
MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)			\
static const struct file_operations iwl_dbgfs_##name##_ops = {		\
	.write = _iwl_dbgfs_##name##_write,				\
	.read = iwl_dbgfs_##name##_read,				\
	.open = simple_open,						\
	.llseek = generic_file_llseek,					\
};

#define _MVM_DEBUGFS_WRITE_FILE_OPS(name, buflen, argtype)		\
MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)			\
static const struct file_operations iwl_dbgfs_##name##_ops = {		\
	.write = _iwl_dbgfs_##name##_write,				\
	.open = simple_open,						\
	.llseek = generic_file_llseek,					\
};