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 | |
15 | typedef struct xfs_sysctl_val { |
16 | int min; |
17 | int val; |
18 | int max; |
19 | } xfs_sysctl_val_t; |
20 | |
21 | typedef struct xfs_param { |
22 | xfs_sysctl_val_t sgid_inherit; /* Inherit S_ISGID if process' GID is |
23 | * not a member of parent dir GID. */ |
24 | xfs_sysctl_val_t symlink_mode; /* Link creat mode affected by umask */ |
25 | xfs_sysctl_val_t panic_mask; /* bitmask to cause panic on errors. */ |
26 | xfs_sysctl_val_t error_level; /* Degree of reporting for problems */ |
27 | xfs_sysctl_val_t syncd_timer; /* Interval between xfssyncd wakeups */ |
28 | xfs_sysctl_val_t stats_clear; /* Reset all XFS statistics to zero. */ |
29 | xfs_sysctl_val_t inherit_sync; /* Inherit the "sync" inode flag. */ |
30 | xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */ |
31 | xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */ |
32 | xfs_sysctl_val_t xfs_buf_timer; /* Interval between xfsbufd wakeups. */ |
33 | xfs_sysctl_val_t xfs_buf_age; /* Metadata buffer age before flush. */ |
34 | xfs_sysctl_val_t inherit_nosym; /* Inherit the "nosymlinks" flag. */ |
35 | xfs_sysctl_val_t rotorstep; /* inode32 AG rotoring control knob */ |
36 | xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */ |
37 | xfs_sysctl_val_t fstrm_timer; /* Filestream dir-AG assoc'n timeout. */ |
38 | xfs_sysctl_val_t blockgc_timer; /* Interval between blockgc scans */ |
39 | } xfs_param_t; |
40 | |
41 | /* |
42 | * xfs_error_level: |
43 | * |
44 | * How much error reporting will be done when internal problems are |
45 | * encountered. These problems normally return an EFSCORRUPTED to their |
46 | * caller, with no other information reported. |
47 | * |
48 | * 0 No error reports |
49 | * 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown |
50 | * 5 Report all EFSCORRUPTED errors (all of the above errors, plus any |
51 | * additional errors that are known to not cause shutdowns) |
52 | * |
53 | * xfs_panic_mask bit 0x8 turns the error reports into panics |
54 | */ |
55 | |
56 | enum { |
57 | /* XFS_REFCACHE_SIZE = 1 */ |
58 | /* XFS_REFCACHE_PURGE = 2 */ |
59 | /* XFS_RESTRICT_CHOWN = 3 */ |
60 | XFS_SGID_INHERIT = 4, |
61 | XFS_SYMLINK_MODE = 5, |
62 | XFS_PANIC_MASK = 6, |
63 | XFS_ERRLEVEL = 7, |
64 | XFS_SYNCD_TIMER = 8, |
65 | /* XFS_PROBE_DMAPI = 9 */ |
66 | /* XFS_PROBE_IOOPS = 10 */ |
67 | /* XFS_PROBE_QUOTA = 11 */ |
68 | XFS_STATS_CLEAR = 12, |
69 | XFS_INHERIT_SYNC = 13, |
70 | XFS_INHERIT_NODUMP = 14, |
71 | XFS_INHERIT_NOATIME = 15, |
72 | XFS_BUF_TIMER = 16, |
73 | XFS_BUF_AGE = 17, |
74 | /* XFS_IO_BYPASS = 18 */ |
75 | XFS_INHERIT_NOSYM = 19, |
76 | XFS_ROTORSTEP = 20, |
77 | XFS_INHERIT_NODFRG = 21, |
78 | XFS_FILESTREAM_TIMER = 22, |
79 | }; |
80 | |
81 | extern xfs_param_t xfs_params; |
82 | |
83 | struct xfs_globals { |
84 | #ifdef DEBUG |
85 | int pwork_threads; /* parallel workqueue threads */ |
86 | bool larp; /* log attribute replay */ |
87 | #endif |
88 | int log_recovery_delay; /* log recovery delay (secs) */ |
89 | int mount_delay; /* mount setup delay (secs) */ |
90 | bool bug_on_assert; /* BUG() the kernel on assert failure */ |
91 | bool always_cow; /* use COW fork for all overwrites */ |
92 | }; |
93 | extern struct xfs_globals xfs_globals; |
94 | |
95 | #ifdef CONFIG_SYSCTL |
96 | extern int xfs_sysctl_register(void); |
97 | extern void xfs_sysctl_unregister(void); |
98 | #else |
99 | # define xfs_sysctl_register() (0) |
100 | # define xfs_sysctl_unregister() do { } while (0) |
101 | #endif /* CONFIG_SYSCTL */ |
102 | |
103 | #endif /* __XFS_SYSCTL_H__ */ |
104 | |