/*
* 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
*/
#include "xfs.h"
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
static struct ctl_table_header *xfs_table_header;
#ifdef CONFIG_PROC_FS
STATIC int
xfs_stats_clear_proc_handler(
ctl_table *ctl,
int write,
struct file *filp,
void __user *buffer,
size_t *lenp,
loff_t *ppos)
{
int c, ret, *valp = ctl->data;
__uint32_t vn_active;
ret = proc_dointvec_minmax(ctl, write, filp, buffer, lenp, ppos);
if (!ret && write && *valp) {
printk("XFS Clearing xfsstats\n");
for_each_possible_cpu(c) {
preempt_disable();
/* save vn_active, it's a universal truth! */
vn_active = per_cpu(xfsstats, c).vn_active;
memset(&per_cpu(xfsstats, c), 0,
sizeof(struct xfsstats));
per_cpu(xfsstats, c).vn_active = vn_active;
preempt_enable();
}
xfs_stats_clear = 0;
}
return ret;
}
#endif /* CONFIG_PROC_FS */
static ctl_table xfs_table[] = {
{
.ctl_name = XFS_RESTRICT_CHOWN,
.procname = "restrict_chown",
.data = &xfs_params.restrict_chown.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.restrict_chown.min,
.extra2 = &xfs_params.restrict_chown.max
},
{
.ctl_name = XFS_SGID_INHERIT,
.procname = "irix_sgid_inherit",
.data = &xfs_params.sgid_inherit.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.sgid_inherit.min,
.extra2 = &xfs_params.sgid_inherit.max
},
{
.ctl_name = XFS_SYMLINK_MODE,
.procname = "irix_symlink_mode",
.data = &xfs_params.symlink_mode.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.symlink_mode.min,
.extra2 = &xfs_params.symlink_mode.max
},
{
.ctl_name = XFS_PANIC_MASK,
.procname = "panic_mask",
.data = &xfs_params.panic_mask.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.panic_mask.min,
.extra2 = &xfs_params.panic_mask.max
},
{
.ctl_name = XFS_ERRLEVEL,
.procname = "error_level",
.data = &xfs_params.error_level.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.error_level.min,
.extra2 = &xfs_params.error_level.max
},
{
.ctl_name = XFS_SYNCD_TIMER,
.procname = "xfssyncd_centisecs",
.data = &xfs_params.syncd_timer.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.syncd_timer.min,
.extra2 = &xfs_params.syncd_timer.max
},
{
.ctl_name = XFS_INHERIT_SYNC,
.procname = "inherit_sync",
.data = &xfs_params.inherit_sync.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.inherit_sync.min,
.extra2 = &xfs_params.inherit_sync.max
},
{
.ctl_name = XFS_INHERIT_NODUMP,
.procname = "inherit_nodump",
.data = &xfs_params.inherit_nodump.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.inherit_nodump.min,
.extra2 = &xfs_params.inherit_nodump.max
},
{
.ctl_name = XFS_INHERIT_NOATIME,
.procname = "inherit_noatime",
.data = &xfs_params.inherit_noatim.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.inherit_noatim.min,
.extra2 = &xfs_params.inherit_noatim.max
},
{
.ctl_name = XFS_BUF_TIMER,
.procname = "xfsbufd_centisecs",
.data = &xfs_params.xfs_buf_timer.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.xfs_buf_timer.min,
.extra2 = &xfs_params.xfs_buf_timer.max
},
{
.ctl_name = XFS_BUF_AGE,
.procname = "age_buffer_centisecs",
.data = &xfs_params.xfs_buf_age.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.xfs_buf_age.min,
.extra2 = &xfs_params.xfs_buf_age.max
},
{
.ctl_name = XFS_INHERIT_NOSYM,
.procname = "inherit_nosymlinks",
.data = &xfs_params.inherit_nosym.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.inherit_nosym.min,
.extra2 = &xfs_params.inherit_nosym.max
},
{
.ctl_name = XFS_ROTORSTEP,
.procname = "rotorstep",
.data = &xfs_params.rotorstep.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.rotorstep.min,
.extra2 = &xfs_params.rotorstep.max
},
{
.ctl_name = XFS_INHERIT_NODFRG,
.procname = "inherit_nodefrag",
.data = &xfs_params.inherit_nodfrg.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.inherit_nodfrg.min,
.extra2 = &xfs_params.inherit_nodfrg.max
},
/* please keep this the last entry */
#ifdef CONFIG_PROC_FS
{
.ctl_name = XFS_STATS_CLEAR,
.procname = "stats_clear",
.data = &xfs_params.stats_clear.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &xfs_stats_clear_proc_handler,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.stats_clear.min,
.extra2 = &xfs_params.stats_clear.max
},
#endif /* CONFIG_PROC_FS */
{}
};
static ctl_table xfs_dir_table[] = {
{
.ctl_name = FS_XFS,
.procname = "xfs",
.mode = 0555,
.child = xfs_table
},
{}
};
static ctl_table xfs_root_table[] = {
{
.ctl_name = CTL_FS,
.procname = "fs",
.mode = 0555,
.child = xfs_dir_table
},
{}
};
void
xfs_sysctl_register(void)
{
xfs_table_header = register_sysctl_table(xfs_root_table, 0);
}
void
xfs_sysctl_unregister(void)
{
if (xfs_table_header)
unregister_sysctl_table(xfs_table_header);
}
