[linux.git] / fs / xfs / xfs_sysctl.h

/*
 * Copyright (c) 2001-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_SYSCTL_H__
#define __XFS_SYSCTL_H__

#include <linux/sysctl.h>

/*
 * Tunable xfs parameters
 */

typedef struct xfs_sysctl_val {
	int min;
	int val;
	int max;
} xfs_sysctl_val_t;

typedef struct xfs_param {
	xfs_sysctl_val_t sgid_inherit;	/* Inherit S_ISGID if process' GID is
					 * not a member of parent dir GID. */
	xfs_sysctl_val_t symlink_mode;	/* Link creat mode affected by umask */
	xfs_sysctl_val_t panic_mask;	/* bitmask to cause panic on errors. */
	xfs_sysctl_val_t error_level;	/* Degree of reporting for problems  */
	xfs_sysctl_val_t syncd_timer;	/* Interval between xfssyncd wakeups */
	xfs_sysctl_val_t stats_clear;	/* Reset all XFS statistics to zero. */
	xfs_sysctl_val_t inherit_sync;	/* Inherit the "sync" inode flag. */
	xfs_sysctl_val_t inherit_nodump;/* Inherit the "nodump" inode flag. */
	xfs_sysctl_val_t inherit_noatim;/* Inherit the "noatime" inode flag. */
	xfs_sysctl_val_t xfs_buf_timer;	/* Interval between xfsbufd wakeups. */
	xfs_sysctl_val_t xfs_buf_age;	/* Metadata buffer age before flush. */
	xfs_sysctl_val_t inherit_nosym;	/* Inherit the "nosymlinks" flag. */
	xfs_sysctl_val_t rotorstep;	/* inode32 AG rotoring control knob */
	xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */
	xfs_sysctl_val_t fstrm_timer;	/* Filestream dir-AG assoc'n timeout. */
} xfs_param_t;

/*
 * xfs_error_level:
 *
 * How much error reporting will be done when internal problems are
 * encountered.  These problems normally return an EFSCORRUPTED to their
 * caller, with no other information reported.
 *
 * 0	No error reports
 * 1	Report EFSCORRUPTED errors that will cause a filesystem shutdown
 * 5	Report all EFSCORRUPTED errors (all of the above errors, plus any
 *	additional errors that are known to not cause shutdowns)
 *
 * xfs_panic_mask bit 0x8 turns the error reports into panics
 */

enum {
	/* XFS_REFCACHE_SIZE = 1 */
	/* XFS_REFCACHE_PURGE = 2 */
	/* XFS_RESTRICT_CHOWN = 3 */
	XFS_SGID_INHERIT = 4,
	XFS_SYMLINK_MODE = 5,
	XFS_PANIC_MASK = 6,
	XFS_ERRLEVEL = 7,
	XFS_SYNCD_TIMER = 8,
	/* XFS_PROBE_DMAPI = 9 */
	/* XFS_PROBE_IOOPS = 10 */
	/* XFS_PROBE_QUOTA = 11 */
	XFS_STATS_CLEAR = 12,
	XFS_INHERIT_SYNC = 13,
	XFS_INHERIT_NODUMP = 14,
	XFS_INHERIT_NOATIME = 15,
	XFS_BUF_TIMER = 16,
	XFS_BUF_AGE = 17,
	/* XFS_IO_BYPASS = 18 */
	XFS_INHERIT_NOSYM = 19,
	XFS_ROTORSTEP = 20,
	XFS_INHERIT_NODFRG = 21,
	XFS_FILESTREAM_TIMER = 22,
};

extern xfs_param_t	xfs_params;

#ifdef CONFIG_SYSCTL
extern int xfs_sysctl_register(void);
extern void xfs_sysctl_unregister(void);
#else
# define xfs_sysctl_register()		(0)
# define xfs_sysctl_unregister()	do { } while (0)
#endif /* CONFIG_SYSCTL */

#endif /* __XFS_SYSCTL_H__ */
Commit	Line	Data
1da177e4	1	/*
7b718769 NS	2	* Copyright (c) 2001-2005 Silicon Graphics, Inc.
7b718769 NS	3	* All Rights Reserved.
1da177e4	4	*
7b718769 NS	5	* This program is free software; you can redistribute it and/or
7b718769 NS	6	* modify it under the terms of the GNU General Public License as
1da177e4 LT	7	* published by the Free Software Foundation.
1da177e4 LT	8	*
7b718769 NS	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.
1da177e4	13	*
7b718769 NS	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
1da177e4	17	*/
1da177e4 LT	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 {
1da177e4 LT	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 */
d3446eac	48	xfs_sysctl_val_t inherit_nodfrg;/* Inherit the "nodefrag" inode flag. */
2a82b8be	49	xfs_sysctl_val_t fstrm_timer; /* Filestream dir-AG assoc'n timeout. */
1da177e4 LT	50	} xfs_param_t;
	51
	52	/*
	53	* xfs_error_level:
	54	*
	55	* How much error reporting will be done when internal problems are
	56	* encountered. These problems normally return an EFSCORRUPTED to their
	57	* caller, with no other information reported.
	58	*
	59	* 0 No error reports
	60	* 1 Report EFSCORRUPTED errors that will cause a filesystem shutdown
	61	* 5 Report all EFSCORRUPTED errors (all of the above errors, plus any
	62	* additional errors that are known to not cause shutdowns)
	63	*
	64	* xfs_panic_mask bit 0x8 turns the error reports into panics
	65	*/
	66
	67	enum {
	68	/* XFS_REFCACHE_SIZE = 1 */
	69	/* XFS_REFCACHE_PURGE = 2 */
e0b8e8b6	70	/* XFS_RESTRICT_CHOWN = 3 */
1da177e4 LT	71	XFS_SGID_INHERIT = 4,
	72	XFS_SYMLINK_MODE = 5,
	73	XFS_PANIC_MASK = 6,
	74	XFS_ERRLEVEL = 7,
	75	XFS_SYNCD_TIMER = 8,
	76	/* XFS_PROBE_DMAPI = 9 */
	77	/* XFS_PROBE_IOOPS = 10 */
	78	/* XFS_PROBE_QUOTA = 11 */
	79	XFS_STATS_CLEAR = 12,
	80	XFS_INHERIT_SYNC = 13,
	81	XFS_INHERIT_NODUMP = 14,
	82	XFS_INHERIT_NOATIME = 15,
	83	XFS_BUF_TIMER = 16,
	84	XFS_BUF_AGE = 17,
	85	/* XFS_IO_BYPASS = 18 */
	86	XFS_INHERIT_NOSYM = 19,
	87	XFS_ROTORSTEP = 20,
d3446eac	88	XFS_INHERIT_NODFRG = 21,
2a82b8be	89	XFS_FILESTREAM_TIMER = 22,
1da177e4 LT	90	};
	91
	92	extern xfs_param_t xfs_params;
	93
	94	#ifdef CONFIG_SYSCTL
9f8868ff	95	extern int xfs_sysctl_register(void);
1da177e4 LT	96	extern void xfs_sysctl_unregister(void);
1da177e4 LT	97	#else
9f8868ff	98	# define xfs_sysctl_register() (0)
1da177e4 LT	99	# define xfs_sysctl_unregister() do { } while (0)
	100	#endif /* CONFIG_SYSCTL */
	101
	102	#endif /* __XFS_SYSCTL_H__ */