/*
   * Copyright (c) 2001-2005 Silicon Graphics, Inc.
   * All Rights Reserved.
   *
   * 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.
   *
   * 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.  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 the Free Software Foundation,
   * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
   */
  #ifndef __XFS_SYSCTL_H__
  #define __XFS_SYSCTL_H__
  
  #include <linux/sysctl.h>
  
  /*
   * Tunable xfs parameters
   */
  
  typedef struct xfs_sysctl_val {
  	int min;
  	int val;
  	int max;
  } xfs_sysctl_val_t;
  
  typedef struct xfs_param {
  	xfs_sysctl_val_t sgid_inherit;	/* Inherit S_ISGID if process' GID is
  					 * not a member of parent dir GID. */
  	xfs_sysctl_val_t symlink_mode;	/* Link creat mode affected by umask */
  	xfs_sysctl_val_t panic_mask;	/* bitmask to cause panic on errors. */
  	xfs_sysctl_val_t error_level;	/* Degree of reporting for problems  */
  	xfs_sysctl_val_t syncd_timer;	/* Interval between xfssyncd wakeups */
  	xfs_sysctl_val_t stats_clear;	/* Reset all XFS statistics to zero. */
  	xfs_sysctl_val_t inherit_sync;	/* Inherit the "sync" inode flag. */
  	xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */
  	xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */
  	xfs_sysctl_val_t xfs_buf_timer;	/* Interval between xfsbufd wakeups. */
  	xfs_sysctl_val_t xfs_buf_age;	/* Metadata buffer age before flush. */
  	xfs_sysctl_val_t inherit_nosym;	/* Inherit the "nosymlinks" flag. */
  	xfs_sysctl_val_t rotorstep;	/* inode32 AG rotoring control knob */
  	xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */
  	xfs_sysctl_val_t fstrm_timer;	/* Filestream dir-AG assoc'n timeout. */
  	xfs_sysctl_val_t eofb_timer;	/* Interval between eofb scan wakeups */
  } xfs_param_t;
  
  /*
   * xfs_error_level:
   *
   * How much error reporting will be done when internal problems are
   * encountered.  These problems normally return an EFSCORRUPTED to their
   * caller, with no other information reported.
   *
   * 0	No error reports
   * 1	Report EFSCORRUPTED errors that will cause a filesystem shutdown
   * 5	Report all EFSCORRUPTED errors (all of the above errors, plus any
   *	additional errors that are known to not cause shutdowns)
   *
   * xfs_panic_mask bit 0x8 turns the error reports into panics
   */
  
  enum {
  	/* XFS_REFCACHE_SIZE = 1 */
  	/* XFS_REFCACHE_PURGE = 2 */
  	/* XFS_RESTRICT_CHOWN = 3 */
  	XFS_SGID_INHERIT = 4,
  	XFS_SYMLINK_MODE = 5,
  	XFS_PANIC_MASK = 6,
  	XFS_ERRLEVEL = 7,
  	XFS_SYNCD_TIMER = 8,
  	/* XFS_PROBE_DMAPI = 9 */
  	/* XFS_PROBE_IOOPS = 10 */
  	/* XFS_PROBE_QUOTA = 11 */
  	XFS_STATS_CLEAR = 12,
  	XFS_INHERIT_SYNC = 13,
  	XFS_INHERIT_NODUMP = 14,
  	XFS_INHERIT_NOATIME = 15,
  	XFS_BUF_TIMER = 16,
  	XFS_BUF_AGE = 17,
  	/* XFS_IO_BYPASS = 18 */
  	XFS_INHERIT_NOSYM = 19,
  	XFS_ROTORSTEP = 20,
  	XFS_INHERIT_NODFRG = 21,
  	XFS_FILESTREAM_TIMER = 22,
  };
  
  extern xfs_param_t	xfs_params;
  
  #ifdef CONFIG_SYSCTL
  extern int xfs_sysctl_register(void);
  extern void xfs_sysctl_unregister(void);
  #else
  # define xfs_sysctl_register()		(0)
  # define xfs_sysctl_unregister()	do { } while (0)
  #endif /* CONFIG_SYSCTL */
  
  #endif /* __XFS_SYSCTL_H__ */