summaryrefslogtreecommitdiffstats
path: root/fs/xfs/linux-2.6/xfs_sysctl.c
blob: b1036dd5012d50eb7abe4169901318900dff386c (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
/*
 * 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[] = {
	{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},

	{XFS_INHERIT_NODFRG, "inherit_nodefrag", &xfs_params.inherit_nodfrg.val,
	sizeof(int), 0644, NULL, &proc_dointvec_minmax,
	&sysctl_intvec, NULL,
	&xfs_params.inherit_nodfrg.min, &xfs_params.inherit_nodfrg.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);
}
OpenPOWER on IntegriCloud