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 eofb_timer; /* Interval between eofb scan wakeups */ 39 xfs_sysctl_val_t cowb_timer; /* Interval between cowb scan wakeups */ 40 } xfs_param_t; 41 42 /* 43 * xfs_error_level: 44 * 45 * How much error reporting will be done when internal problems are 46 * encountered. These problems normally return an EFSCORRUPTED to their 47 * caller, with no other information reported. 48 * 49 * 0 No error reports 50 * 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown 51 * 5 Report all EFSCORRUPTED errors (all of the above errors, plus any 52 * additional errors that are known to not cause shutdowns) 53 * 54 * xfs_panic_mask bit 0x8 turns the error reports into panics 55 */ 56 57 enum { 58 /* XFS_REFCACHE_SIZE = 1 */ 59 /* XFS_REFCACHE_PURGE = 2 */ 60 /* XFS_RESTRICT_CHOWN = 3 */ 61 XFS_SGID_INHERIT = 4, 62 XFS_SYMLINK_MODE = 5, 63 XFS_PANIC_MASK = 6, 64 XFS_ERRLEVEL = 7, 65 XFS_SYNCD_TIMER = 8, 66 /* XFS_PROBE_DMAPI = 9 */ 67 /* XFS_PROBE_IOOPS = 10 */ 68 /* XFS_PROBE_QUOTA = 11 */ 69 XFS_STATS_CLEAR = 12, 70 XFS_INHERIT_SYNC = 13, 71 XFS_INHERIT_NODUMP = 14, 72 XFS_INHERIT_NOATIME = 15, 73 XFS_BUF_TIMER = 16, 74 XFS_BUF_AGE = 17, 75 /* XFS_IO_BYPASS = 18 */ 76 XFS_INHERIT_NOSYM = 19, 77 XFS_ROTORSTEP = 20, 78 XFS_INHERIT_NODFRG = 21, 79 XFS_FILESTREAM_TIMER = 22, 80 }; 81 82 extern xfs_param_t xfs_params; 83 84 struct xfs_globals { 85 #ifdef DEBUG 86 int pwork_threads; /* parallel workqueue threads */ 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