1 /* 2 * Copyright (c) 2001-2004 Silicon Graphics, Inc. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of version 2 of the GNU General Public License as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it would be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 * 12 * Further, this software is distributed without any warranty that it is 13 * free of the rightful claim of any third person regarding infringement 14 * or the like. Any license provided herein, whether implied or 15 * otherwise, applies only to this software file. Patent licenses, if 16 * any, provided herein do not apply to combinations of this program with 17 * other software, or any other product whatsoever. 18 * 19 * You should have received a copy of the GNU General Public License along 20 * with this program; if not, write the Free Software Foundation, Inc., 59 21 * Temple Place - Suite 330, Boston MA 02111-1307, USA. 22 * 23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 24 * Mountain View, CA 94043, or: 25 * 26 * http://www.sgi.com 27 * 28 * For further information regarding this notice, see: 29 * 30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ 31 */ 32 33 #ifndef __XFS_SYSCTL_H__ 34 #define __XFS_SYSCTL_H__ 35 36 #include <linux/sysctl.h> 37 38 /* 39 * Tunable xfs parameters 40 */ 41 42 typedef struct xfs_sysctl_val { 43 int min; 44 int val; 45 int max; 46 } xfs_sysctl_val_t; 47 48 typedef struct xfs_param { 49 xfs_sysctl_val_t refcache_size; /* Size of NFS reference cache. */ 50 xfs_sysctl_val_t refcache_purge;/* # of entries to purge each time. */ 51 xfs_sysctl_val_t restrict_chown;/* Root/non-root can give away files.*/ 52 xfs_sysctl_val_t sgid_inherit; /* Inherit S_ISGID if process' GID is 53 * not a member of parent dir GID. */ 54 xfs_sysctl_val_t symlink_mode; /* Link creat mode affected by umask */ 55 xfs_sysctl_val_t panic_mask; /* bitmask to cause panic on errors. */ 56 xfs_sysctl_val_t error_level; /* Degree of reporting for problems */ 57 xfs_sysctl_val_t syncd_timer; /* Interval between xfssyncd wakeups */ 58 xfs_sysctl_val_t stats_clear; /* Reset all XFS statistics to zero. */ 59 xfs_sysctl_val_t inherit_sync; /* Inherit the "sync" inode flag. */ 60 xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */ 61 xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */ 62 xfs_sysctl_val_t xfs_buf_timer; /* Interval between xfsbufd wakeups. */ 63 xfs_sysctl_val_t xfs_buf_age; /* Metadata buffer age before flush. */ 64 xfs_sysctl_val_t inherit_nosym; /* Inherit the "nosymlinks" flag. */ 65 xfs_sysctl_val_t rotorstep; /* inode32 AG rotoring control knob */ 66 } xfs_param_t; 67 68 /* 69 * xfs_error_level: 70 * 71 * How much error reporting will be done when internal problems are 72 * encountered. These problems normally return an EFSCORRUPTED to their 73 * caller, with no other information reported. 74 * 75 * 0 No error reports 76 * 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown 77 * 5 Report all EFSCORRUPTED errors (all of the above errors, plus any 78 * additional errors that are known to not cause shutdowns) 79 * 80 * xfs_panic_mask bit 0x8 turns the error reports into panics 81 */ 82 83 enum { 84 XFS_REFCACHE_SIZE = 1, 85 XFS_REFCACHE_PURGE = 2, 86 XFS_RESTRICT_CHOWN = 3, 87 XFS_SGID_INHERIT = 4, 88 XFS_SYMLINK_MODE = 5, 89 XFS_PANIC_MASK = 6, 90 XFS_ERRLEVEL = 7, 91 XFS_SYNCD_TIMER = 8, 92 /* XFS_PROBE_DMAPI = 9 */ 93 /* XFS_PROBE_IOOPS = 10 */ 94 /* XFS_PROBE_QUOTA = 11 */ 95 XFS_STATS_CLEAR = 12, 96 XFS_INHERIT_SYNC = 13, 97 XFS_INHERIT_NODUMP = 14, 98 XFS_INHERIT_NOATIME = 15, 99 XFS_BUF_TIMER = 16, 100 XFS_BUF_AGE = 17, 101 /* XFS_IO_BYPASS = 18, */ 102 XFS_INHERIT_NOSYM = 19, 103 XFS_ROTORSTEP = 20, 104 }; 105 106 extern xfs_param_t xfs_params; 107 108 #ifdef CONFIG_SYSCTL 109 extern void xfs_sysctl_register(void); 110 extern void xfs_sysctl_unregister(void); 111 #else 112 # define xfs_sysctl_register() do { } while (0) 113 # define xfs_sysctl_unregister() do { } while (0) 114 #endif /* CONFIG_SYSCTL */ 115 116 #endif /* __XFS_SYSCTL_H__ */ 117