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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2001-2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6#ifndef __XFS_SYSCTL_H__
7#define __XFS_SYSCTL_H__
8
9#include <linux/sysctl.h>
10
11/*
12 * Tunable xfs parameters
13 */
14
15typedef struct xfs_sysctl_val {
16 int min;
17 int val;
18 int max;
19} xfs_sysctl_val_t;
20
21typedef struct xfs_param {
22 xfs_sysctl_val_t panic_mask; /* bitmask to cause panic on errors. */
23 xfs_sysctl_val_t error_level; /* Degree of reporting for problems */
24 xfs_sysctl_val_t syncd_timer; /* Interval between xfssyncd wakeups */
25 xfs_sysctl_val_t stats_clear; /* Reset all XFS statistics to zero. */
26 xfs_sysctl_val_t inherit_sync; /* Inherit the "sync" inode flag. */
27 xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */
28 xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */
29 xfs_sysctl_val_t inherit_nosym; /* Inherit the "nosymlinks" flag. */
30 xfs_sysctl_val_t rotorstep; /* inode32 AG rotoring control knob */
31 xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */
32 xfs_sysctl_val_t fstrm_timer; /* Filestream dir-AG assoc'n timeout. */
33 xfs_sysctl_val_t blockgc_timer; /* Interval between blockgc scans */
34} xfs_param_t;
35
36/*
37 * xfs_error_level:
38 *
39 * How much error reporting will be done when internal problems are
40 * encountered. These problems normally return an EFSCORRUPTED to their
41 * caller, with no other information reported.
42 *
43 * 0 No error reports
44 * 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown
45 * 5 Report all EFSCORRUPTED errors (all of the above errors, plus any
46 * additional errors that are known to not cause shutdowns)
47 *
48 * xfs_panic_mask bit 0x8 turns the error reports into panics
49 */
50
51enum {
52 /* XFS_REFCACHE_SIZE = 1 */
53 /* XFS_REFCACHE_PURGE = 2 */
54 /* XFS_RESTRICT_CHOWN = 3 */
55 XFS_SGID_INHERIT = 4,
56 XFS_SYMLINK_MODE = 5,
57 XFS_PANIC_MASK = 6,
58 XFS_ERRLEVEL = 7,
59 XFS_SYNCD_TIMER = 8,
60 /* XFS_PROBE_DMAPI = 9 */
61 /* XFS_PROBE_IOOPS = 10 */
62 /* XFS_PROBE_QUOTA = 11 */
63 XFS_STATS_CLEAR = 12,
64 XFS_INHERIT_SYNC = 13,
65 XFS_INHERIT_NODUMP = 14,
66 XFS_INHERIT_NOATIME = 15,
67 XFS_BUF_TIMER = 16,
68 XFS_BUF_AGE = 17,
69 /* XFS_IO_BYPASS = 18 */
70 XFS_INHERIT_NOSYM = 19,
71 XFS_ROTORSTEP = 20,
72 XFS_INHERIT_NODFRG = 21,
73 XFS_FILESTREAM_TIMER = 22,
74};
75
76extern xfs_param_t xfs_params;
77
78struct xfs_globals {
79#ifdef DEBUG
80 int pwork_threads; /* parallel workqueue threads */
81 bool larp; /* log attribute replay */
82#endif
83 int bload_leaf_slack; /* btree bulk load leaf slack */
84 int bload_node_slack; /* btree bulk load node slack */
85 int log_recovery_delay; /* log recovery delay (secs) */
86 int mount_delay; /* mount setup delay (secs) */
87 bool bug_on_assert; /* BUG() the kernel on assert failure */
88 bool always_cow; /* use COW fork for all overwrites */
89};
90extern struct xfs_globals xfs_globals;
91
92#ifdef CONFIG_SYSCTL
93extern int xfs_sysctl_register(void);
94extern void xfs_sysctl_unregister(void);
95#else
96# define xfs_sysctl_register() (0)
97# define xfs_sysctl_unregister() do { } while (0)
98#endif /* CONFIG_SYSCTL */
99
100#endif /* __XFS_SYSCTL_H__ */