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Symlinks are created by default with mode 777 now, old behavior is still
accessible through sysctl through.  irixsgid mount option deprecated and
it too is still accessible through sysctl.
Merge of 2.4.x-xfs:slinx:129282a by nathans.

  Make restricted_chown, irix_sgid_inherit and irix_symlink_mode as
  configurable parameters.

/*
 * Copyright (c) 2001-2002 Silicon Graphics, Inc.  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 would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.	 Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 *
 * http://www.sgi.com
 *
 * For further information regarding this notice, see:
 *
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */

#ifndef __XFS_SYSCTL_H__
#define __XFS_SYSCTL_H__

#include <linux/sysctl.h>

/*
 * Tunable xfs parameters
 */

#define XFS_PARAM	(sizeof(struct xfs_param) / sizeof(ulong))

typedef struct xfs_param {
	ulong	refcache_size;	/* Size of NFS reference cache.          */
	ulong	refcache_purge;	/* # of entries to purge each time.      */
	ulong	stats_clear;	/* Reset all XFS statistics to zero.     */
	ulong	restrict_chown;	/* Root/non-root can give away files.    */
	ulong	sgid_inherit;	/* Inherit ISGID bit if process' GID is  */
				/*  not a member of the parent dir GID.  */
	ulong	symlink_mode;	/* Symlink creat mode affected by umask. */
} xfs_param_t;

enum {
	XFS_REFCACHE_SIZE = 1,
	XFS_REFCACHE_PURGE = 2,
	XFS_STATS_CLEAR = 3,
	XFS_RESTRICT_CHOWN = 4,
	XFS_SGID_INHERIT = 5,
	XFS_SYMLINK_MODE = 6,
};

extern xfs_param_t	xfs_params;

#ifdef CONFIG_SYSCTL
extern void xfs_sysctl_register(void);
extern void xfs_sysctl_unregister(void);
#else
static __inline void xfs_sysctl_register(void) { };
static __inline void xfs_sysctl_unregister(void) { };
#endif

#endif /* __XFS_SYSCTL_H__ */