// 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 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 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 blockgc_timer; /* Interval between blockgc scans */
} 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 */
        bool    larp;                   /* log attribute replay */
#endif
        int     bload_leaf_slack;       /* btree bulk load leaf slack */
        int     bload_node_slack;       /* btree bulk load node slack */
        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__ */