fs/xfs/linux/xfs_sysctl.h

   1 /*
   2  * Copyright (c) 2001-2002 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 #define XFS_PARAM       (sizeof(struct xfs_param) / sizeof(ulong))
  43
  44 typedef struct xfs_param {
  45         ulong   restrict_chown; /* Root/non-root can give away files.    */
  46         ulong   sgid_inherit;   /* Inherit ISGID bit if process' GID is  */
  47                                 /*  not a member of the parent dir GID.  */
  48         ulong   symlink_mode;   /* Symlink creat mode affected by umask. */
  49         ulong   panic_mask;     /* bitmask to specify panics on errors.  */
  50         ulong   error_level;    /* Degree of reporting for internal probs*/
  51         ulong   sync_interval;  /* time between sync calls               */
  52         ulong   stats_clear;    /* Reset all XFS statistics to zero.     */
  53 } xfs_param_t;
  54
  55 /*
  56  * xfs_error_level:
  57  *
  58  * How much error reporting will be done when internal problems are
  59  * encountered.  These problems normally return an EFSCORRUPTED to their
  60  * caller, with no other information reported.
  61  *
  62  * 0    No error reports
  63  * 1    Report EFSCORRUPTED errors that will cause a filesystem shutdown
  64  * 5    Report all EFSCORRUPTED errors (all of the above errors, plus any
  65  *      additional errors that are known to not cause shutdowns)
  66  *
  67  * xfs_panic_mask bit 0x8 turns the error reports into panics
  68  */
  69
  70 enum {
  71         XFS_RESTRICT_CHOWN = 1,
  72         XFS_SGID_INHERIT = 2,
  73         XFS_SYMLINK_MODE = 3,
  74         XFS_PANIC_MASK = 4,
  75         XFS_ERRLEVEL = 5,
  76         XFS_SYNC_INTERVAL = 6,
  77         XFS_STATS_CLEAR = 7,
  78 };
  79
  80 extern xfs_param_t      xfs_params;
  81
  82 #ifdef CONFIG_SYSCTL
  83 extern void xfs_sysctl_register(void);
  84 extern void xfs_sysctl_unregister(void);
  85 #else
  86 # define xfs_sysctl_register()          do { } while (0)
  87 # define xfs_sysctl_unregister()        do { } while (0)
  88 #endif /* CONFIG_SYSCTL */
  89
  90 #endif /* __XFS_SYSCTL_H__ */