1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (c) 2001-2005 Silicon Graphics, Inc. 4*4882a593Smuzhiyun * All Rights Reserved. 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun #ifndef __XFS_SYSCTL_H__ 7*4882a593Smuzhiyun #define __XFS_SYSCTL_H__ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/sysctl.h> 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun /* 12*4882a593Smuzhiyun * Tunable xfs parameters 13*4882a593Smuzhiyun */ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun typedef struct xfs_sysctl_val { 16*4882a593Smuzhiyun int min; 17*4882a593Smuzhiyun int val; 18*4882a593Smuzhiyun int max; 19*4882a593Smuzhiyun } xfs_sysctl_val_t; 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun typedef struct xfs_param { 22*4882a593Smuzhiyun xfs_sysctl_val_t sgid_inherit; /* Inherit S_ISGID if process' GID is 23*4882a593Smuzhiyun * not a member of parent dir GID. */ 24*4882a593Smuzhiyun xfs_sysctl_val_t symlink_mode; /* Link creat mode affected by umask */ 25*4882a593Smuzhiyun xfs_sysctl_val_t panic_mask; /* bitmask to cause panic on errors. */ 26*4882a593Smuzhiyun xfs_sysctl_val_t error_level; /* Degree of reporting for problems */ 27*4882a593Smuzhiyun xfs_sysctl_val_t syncd_timer; /* Interval between xfssyncd wakeups */ 28*4882a593Smuzhiyun xfs_sysctl_val_t stats_clear; /* Reset all XFS statistics to zero. */ 29*4882a593Smuzhiyun xfs_sysctl_val_t inherit_sync; /* Inherit the "sync" inode flag. */ 30*4882a593Smuzhiyun xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */ 31*4882a593Smuzhiyun xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */ 32*4882a593Smuzhiyun xfs_sysctl_val_t xfs_buf_timer; /* Interval between xfsbufd wakeups. */ 33*4882a593Smuzhiyun xfs_sysctl_val_t xfs_buf_age; /* Metadata buffer age before flush. */ 34*4882a593Smuzhiyun xfs_sysctl_val_t inherit_nosym; /* Inherit the "nosymlinks" flag. */ 35*4882a593Smuzhiyun xfs_sysctl_val_t rotorstep; /* inode32 AG rotoring control knob */ 36*4882a593Smuzhiyun xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */ 37*4882a593Smuzhiyun xfs_sysctl_val_t fstrm_timer; /* Filestream dir-AG assoc'n timeout. */ 38*4882a593Smuzhiyun xfs_sysctl_val_t eofb_timer; /* Interval between eofb scan wakeups */ 39*4882a593Smuzhiyun xfs_sysctl_val_t cowb_timer; /* Interval between cowb scan wakeups */ 40*4882a593Smuzhiyun } xfs_param_t; 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun /* 43*4882a593Smuzhiyun * xfs_error_level: 44*4882a593Smuzhiyun * 45*4882a593Smuzhiyun * How much error reporting will be done when internal problems are 46*4882a593Smuzhiyun * encountered. These problems normally return an EFSCORRUPTED to their 47*4882a593Smuzhiyun * caller, with no other information reported. 48*4882a593Smuzhiyun * 49*4882a593Smuzhiyun * 0 No error reports 50*4882a593Smuzhiyun * 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown 51*4882a593Smuzhiyun * 5 Report all EFSCORRUPTED errors (all of the above errors, plus any 52*4882a593Smuzhiyun * additional errors that are known to not cause shutdowns) 53*4882a593Smuzhiyun * 54*4882a593Smuzhiyun * xfs_panic_mask bit 0x8 turns the error reports into panics 55*4882a593Smuzhiyun */ 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun enum { 58*4882a593Smuzhiyun /* XFS_REFCACHE_SIZE = 1 */ 59*4882a593Smuzhiyun /* XFS_REFCACHE_PURGE = 2 */ 60*4882a593Smuzhiyun /* XFS_RESTRICT_CHOWN = 3 */ 61*4882a593Smuzhiyun XFS_SGID_INHERIT = 4, 62*4882a593Smuzhiyun XFS_SYMLINK_MODE = 5, 63*4882a593Smuzhiyun XFS_PANIC_MASK = 6, 64*4882a593Smuzhiyun XFS_ERRLEVEL = 7, 65*4882a593Smuzhiyun XFS_SYNCD_TIMER = 8, 66*4882a593Smuzhiyun /* XFS_PROBE_DMAPI = 9 */ 67*4882a593Smuzhiyun /* XFS_PROBE_IOOPS = 10 */ 68*4882a593Smuzhiyun /* XFS_PROBE_QUOTA = 11 */ 69*4882a593Smuzhiyun XFS_STATS_CLEAR = 12, 70*4882a593Smuzhiyun XFS_INHERIT_SYNC = 13, 71*4882a593Smuzhiyun XFS_INHERIT_NODUMP = 14, 72*4882a593Smuzhiyun XFS_INHERIT_NOATIME = 15, 73*4882a593Smuzhiyun XFS_BUF_TIMER = 16, 74*4882a593Smuzhiyun XFS_BUF_AGE = 17, 75*4882a593Smuzhiyun /* XFS_IO_BYPASS = 18 */ 76*4882a593Smuzhiyun XFS_INHERIT_NOSYM = 19, 77*4882a593Smuzhiyun XFS_ROTORSTEP = 20, 78*4882a593Smuzhiyun XFS_INHERIT_NODFRG = 21, 79*4882a593Smuzhiyun XFS_FILESTREAM_TIMER = 22, 80*4882a593Smuzhiyun }; 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun extern xfs_param_t xfs_params; 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun struct xfs_globals { 85*4882a593Smuzhiyun #ifdef DEBUG 86*4882a593Smuzhiyun int pwork_threads; /* parallel workqueue threads */ 87*4882a593Smuzhiyun #endif 88*4882a593Smuzhiyun int log_recovery_delay; /* log recovery delay (secs) */ 89*4882a593Smuzhiyun int mount_delay; /* mount setup delay (secs) */ 90*4882a593Smuzhiyun bool bug_on_assert; /* BUG() the kernel on assert failure */ 91*4882a593Smuzhiyun bool always_cow; /* use COW fork for all overwrites */ 92*4882a593Smuzhiyun }; 93*4882a593Smuzhiyun extern struct xfs_globals xfs_globals; 94*4882a593Smuzhiyun 95*4882a593Smuzhiyun #ifdef CONFIG_SYSCTL 96*4882a593Smuzhiyun extern int xfs_sysctl_register(void); 97*4882a593Smuzhiyun extern void xfs_sysctl_unregister(void); 98*4882a593Smuzhiyun #else 99*4882a593Smuzhiyun # define xfs_sysctl_register() (0) 100*4882a593Smuzhiyun # define xfs_sysctl_unregister() do { } while (0) 101*4882a593Smuzhiyun #endif /* CONFIG_SYSCTL */ 102*4882a593Smuzhiyun 103*4882a593Smuzhiyun #endif /* __XFS_SYSCTL_H__ */ 104