// SPDX-License-Identifier: GPL-2.0

  /*

   * Copyright (c) 2001-2005 Silicon Graphics, Inc.
   * All Rights Reserved.

   */

  #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_sysctl_val_t cowb_timer;	/* Interval between cowb 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;

  struct xfs_globals {

  #ifdef DEBUG
  	int	pwork_threads;		/* parallel workqueue threads */
  #endif

  	int	log_recovery_delay;	/* log recovery delay (secs) */

  	int	mount_delay;		/* mount setup delay (secs) */

  	bool	bug_on_assert;		/* BUG() the kernel on assert failure */

  	bool	always_cow;		/* use COW fork for all overwrites */

  };
  extern struct xfs_globals	xfs_globals;

  #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__ */