summaryrefslogtreecommitdiff
path: root/fs/xfs/linux-2.6/xfs_sysctl.c
blob: 0dc010356f4dd4fad46ee960ef027a1e941ec208 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
/*
 * Copyright (c) 2001-2004 Silicon Graphics, Inc.  All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 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.
 *
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA  94043, or:
 *
 * http://www.sgi.com
 *
 * For further information regarding this notice, see:
 *
 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
 */

#include "xfs.h"
#include "xfs_rw.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 (c = 0; c < NR_CPUS; c++) {
			if (!cpu_possible(c)) continue;
			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[] = {
	{XFS_RESTRICT_CHOWN, "restrict_chown", &xfs_params.restrict_chown.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL, 
	&xfs_params.restrict_chown.min, &xfs_params.restrict_chown.max},

	{XFS_SGID_INHERIT, "irix_sgid_inherit", &xfs_params.sgid_inherit.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL,
	&xfs_params.sgid_inherit.min, &xfs_params.sgid_inherit.max},

	{XFS_SYMLINK_MODE, "irix_symlink_mode", &xfs_params.symlink_mode.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL, 
	&xfs_params.symlink_mode.min, &xfs_params.symlink_mode.max},

	{XFS_PANIC_MASK, "panic_mask", &xfs_params.panic_mask.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL, 
	&xfs_params.panic_mask.min, &xfs_params.panic_mask.max},

	{XFS_ERRLEVEL, "error_level", &xfs_params.error_level.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL, 
	&xfs_params.error_level.min, &xfs_params.error_level.max},

	{XFS_SYNCD_TIMER, "xfssyncd_centisecs", &xfs_params.syncd_timer.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL, 
	&xfs_params.syncd_timer.min, &xfs_params.syncd_timer.max},

	{XFS_INHERIT_SYNC, "inherit_sync", &xfs_params.inherit_sync.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL,
	&xfs_params.inherit_sync.min, &xfs_params.inherit_sync.max},

	{XFS_INHERIT_NODUMP, "inherit_nodump", &xfs_params.inherit_nodump.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL,
	&xfs_params.inherit_nodump.min, &xfs_params.inherit_nodump.max},

	{XFS_INHERIT_NOATIME, "inherit_noatime", &xfs_params.inherit_noatim.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL,
	&xfs_params.inherit_noatim.min, &xfs_params.inherit_noatim.max},
	
	{XFS_BUF_TIMER, "xfsbufd_centisecs", &xfs_params.xfs_buf_timer.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL,
	&xfs_params.xfs_buf_timer.min, &xfs_params.xfs_buf_timer.max},

	{XFS_BUF_AGE, "age_buffer_centisecs", &xfs_params.xfs_buf_age.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL,
	&xfs_params.xfs_buf_age.min, &xfs_params.xfs_buf_age.max},

	{XFS_INHERIT_NOSYM, "inherit_nosymlinks", &xfs_params.inherit_nosym.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL,
	&xfs_params.inherit_nosym.min, &xfs_params.inherit_nosym.max},

	{XFS_ROTORSTEP, "rotorstep", &xfs_params.rotorstep.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL, 
	&xfs_params.rotorstep.min, &xfs_params.rotorstep.max},

	/* please keep this the last entry */
#ifdef CONFIG_PROC_FS
	{XFS_STATS_CLEAR, "stats_clear", &xfs_params.stats_clear.val,
	sizeof(int), 0644, NULL, &xfs_stats_clear_proc_handler,
	&sysctl_intvec, NULL, 
	&xfs_params.stats_clear.min, &xfs_params.stats_clear.max},
#endif /* CONFIG_PROC_FS */

	{0}
};

STATIC ctl_table xfs_dir_table[] = {
	{FS_XFS, "xfs", NULL, 0, 0555, xfs_table},
	{0}
};

STATIC ctl_table xfs_root_table[] = {
	{CTL_FS, "fs",  NULL, 0, 0555, xfs_dir_table},
	{0}
};

void
xfs_sysctl_register(void)
{
	xfs_table_header = register_sysctl_table(xfs_root_table, 1);
}

void
xfs_sysctl_unregister(void)
{
	if (xfs_table_header)
		unregister_sysctl_table(xfs_table_header);
}