1 /* 2 * Copyright (c) 2001-2005 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 #ifndef __XFS_SYSCTL_H__ 19 #define __XFS_SYSCTL_H__ 20 21 #include <linux/sysctl.h> 22 23 /* 24 * Tunable xfs parameters 25 */ 26 27 typedef struct xfs_sysctl_val { 28 int min; 29 int val; 30 int max; 31 } xfs_sysctl_val_t; 32 33 typedef struct xfs_param { 34 xfs_sysctl_val_t sgid_inherit; /* Inherit S_ISGID if process' GID is 35 * not a member of parent dir GID. */ 36 xfs_sysctl_val_t symlink_mode; /* Link creat mode affected by umask */ 37 xfs_sysctl_val_t panic_mask; /* bitmask to cause panic on errors. */ 38 xfs_sysctl_val_t error_level; /* Degree of reporting for problems */ 39 xfs_sysctl_val_t syncd_timer; /* Interval between xfssyncd wakeups */ 40 xfs_sysctl_val_t stats_clear; /* Reset all XFS statistics to zero. */ 41 xfs_sysctl_val_t inherit_sync; /* Inherit the "sync" inode flag. */ 42 xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */ 43 xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */ 44 xfs_sysctl_val_t xfs_buf_timer; /* Interval between xfsbufd wakeups. */ 45 xfs_sysctl_val_t xfs_buf_age; /* Metadata buffer age before flush. */ 46 xfs_sysctl_val_t inherit_nosym; /* Inherit the "nosymlinks" flag. */ 47 xfs_sysctl_val_t rotorstep; /* inode32 AG rotoring control knob */ 48 xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */ 49 xfs_sysctl_val_t fstrm_timer; /* Filestream dir-AG assoc'n timeout. */ 50 xfs_sysctl_val_t eofb_timer; /* Interval between eofb scan wakeups */ 51 } xfs_param_t; 52 53 /* 54 * xfs_error_level: 55 * 56 * How much error reporting will be done when internal problems are 57 * encountered. These problems normally return an EFSCORRUPTED to their 58 * caller, with no other information reported. 59 * 60 * 0 No error reports 61 * 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown 62 * 5 Report all EFSCORRUPTED errors (all of the above errors, plus any 63 * additional errors that are known to not cause shutdowns) 64 * 65 * xfs_panic_mask bit 0x8 turns the error reports into panics 66 */ 67 68 enum { 69 /* XFS_REFCACHE_SIZE = 1 */ 70 /* XFS_REFCACHE_PURGE = 2 */ 71 /* XFS_RESTRICT_CHOWN = 3 */ 72 XFS_SGID_INHERIT = 4, 73 XFS_SYMLINK_MODE = 5, 74 XFS_PANIC_MASK = 6, 75 XFS_ERRLEVEL = 7, 76 XFS_SYNCD_TIMER = 8, 77 /* XFS_PROBE_DMAPI = 9 */ 78 /* XFS_PROBE_IOOPS = 10 */ 79 /* XFS_PROBE_QUOTA = 11 */ 80 XFS_STATS_CLEAR = 12, 81 XFS_INHERIT_SYNC = 13, 82 XFS_INHERIT_NODUMP = 14, 83 XFS_INHERIT_NOATIME = 15, 84 XFS_BUF_TIMER = 16, 85 XFS_BUF_AGE = 17, 86 /* XFS_IO_BYPASS = 18 */ 87 XFS_INHERIT_NOSYM = 19, 88 XFS_ROTORSTEP = 20, 89 XFS_INHERIT_NODFRG = 21, 90 XFS_FILESTREAM_TIMER = 22, 91 }; 92 93 extern xfs_param_t xfs_params; 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