zfs/include/linux/sysctl_compat.h

/*****************************************************************************\
 *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
 *  Copyright (C) 2007 The Regents of the University of California.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
 *  UCRL-CODE-235197
 *
 *  This file is part of the SPL, Solaris Porting Layer.
 *  For details, see <http://github.com/behlendorf/spl/>.
 *
 *  The SPL 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.
 *
 *  The SPL 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 the SPL.  If not, see <http://www.gnu.org/licenses/>.
\*****************************************************************************/

#ifndef _SPL_SYSCTL_COMPAT_H
#define _SPL_SYSCTL_COMPAT_H

#include <linux/sysctl.h>

/* proc_handler() / proc_do* API changes
 * 2.6.x  - 2.6.31: 6 args, prototype includes 'struct file *'
 * 2.6.32 - 2.6.y:  5 args, removed unused 'struct file *' from prototype
 *
 * Generic SPL_PROC_HANDLER() macro should be used for correct prototypes.
 * It will define the following function arguments which can and should be
 * used with the spl_proc_* helper macros.
 *
 *   struct ctl_table *table,
 *   int write,
 *   struct file *filp [2.6.31 and earlier kernels],
 *   void __user *buffer,
 *   size_t *lenp,
 *   loff_t *ppos,
 */
#ifdef HAVE_5ARGS_PROC_HANDLER

#define SPL_PROC_HANDLER(proc_handler)                                       \
static int                                                                   \
proc_handler(struct ctl_table *table, int write,                             \
             void __user *buffer, size_t *lenp, loff_t *ppos)

#define spl_proc_dostring(table, write, filp, buffer, lenp, ppos)            \
	proc_dostring(table, write, buffer, lenp, ppos)
#define spl_proc_dointvec(table, write, filp, buffer, lenp, ppos)            \
	proc_dointvec(table, write, buffer, lenp, ppos)
#define spl_proc_dointvec_minmax(table, write, filp, buffer, lenp, ppos)     \
	proc_dointvec_minmax(table, write, buffer, lenp, ppos)
#define spl_proc_dointvec_jiffies(table, write, filp, buffer, lenp, ppos)    \
	proc_dointvec_jiffies(table, write, buffer, lenp, ppos)
#define spl_proc_dointvec_userhz_jiffies(table,write,filp,buffer,lenp,ppos)  \
	proc_dointvec_userhz_jiffies(table, write, buffer, lenp, ppos)
#define spl_proc_dointvec_ms_jiffies(table,write,filp,buffer,lenp,ppos)      \
	proc_dointvec_ms_jiffies(table, write, buffer, lenp, ppos)
#define spl_proc_doulongvec_minmax(table, write, filp, buffer, lenp, ppos)   \
	proc_doulongvec_minmax(table, write, buffer, lenp, ppos)
#define spl_proc_doulongvec_ms_jiffies_minmax(table,write,filp,buffer,lenp,ppos)\
	proc_doulongvec_ms_jiffies_minmax(table, write, buffer, lenp, ppos)

#else /* HAVE_5ARGS_PROC_HANDLER */

#define SPL_PROC_HANDLER(proc_handler)                                       \
static int                                                                   \
proc_handler(struct ctl_table *table, int write, struct file *filp,          \
             void __user *buffer, size_t *lenp, loff_t *ppos)

#define spl_proc_dostring(table, write, filp, buffer, lenp, ppos)            \
	proc_dostring(table, write, filp, buffer, lenp, ppos)
#define spl_proc_dointvec(table, write, filp, buffer, lenp, ppos)            \
	proc_dointvec(table, write, filp, buffer, lenp, ppos)
#define spl_proc_dointvec_minmax(table, write, filp, buffer, lenp, ppos)     \
	proc_dointvec_minmax(table, write, filp, buffer, lenp, ppos)
#define spl_proc_dointvec_jiffies(table, write, filp, buffer, lenp, ppos)    \
	proc_dointvec_jiffies(table, write, filp, buffer, lenp, ppos)
#define spl_proc_dointvec_userhz_jiffies(table,write,filp,buffer,lenp,ppos)  \
	proc_dointvec_userhz_jiffies(table, write, filp, buffer, lenp, ppos)
#define spl_proc_dointvec_ms_jiffies(table, write, filp, buffer, lenp, ppos) \
	proc_dointvec_ms_jiffies(table, write, filp, buffer, lenp, ppos)
#define spl_proc_doulongvec_minmax(table, write, filp, buffer, lenp, ppos)        \
	proc_doulongvec_minmax(table, write, filp, buffer, lenp, ppos)
#define spl_proc_doulongvec_ms_jiffies_minmax(table,write,filp,buffer,lenp,ppos)  \
	proc_doulongvec_ms_jiffies_minmax(table,write,filp,buffer,lenp,ppos)


#endif /* HAVE_5ARGS_PROC_HANDLER */

#endif /* _SPL_SYSCTL_COMPAT_H */