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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2001-2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include "xfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <linux/sysctl.h>
20#include <linux/proc_fs.h>
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022static struct ctl_table_header *xfs_table_header;
23
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#ifdef CONFIG_PROC_FS
25STATIC int
26xfs_stats_clear_proc_handler(
27 ctl_table *ctl,
28 int write,
29 struct file *filp,
30 void __user *buffer,
31 size_t *lenp,
32 loff_t *ppos)
33{
34 int c, ret, *valp = ctl->data;
35 __uint32_t vn_active;
36
37 ret = proc_dointvec_minmax(ctl, write, filp, buffer, lenp, ppos);
38
39 if (!ret && write && *valp) {
40 printk("XFS Clearing xfsstats\n");
Andrew Morton394e3902006-03-23 03:01:05 -080041 for_each_cpu(c) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 preempt_disable();
43 /* save vn_active, it's a universal truth! */
44 vn_active = per_cpu(xfsstats, c).vn_active;
45 memset(&per_cpu(xfsstats, c), 0,
46 sizeof(struct xfsstats));
47 per_cpu(xfsstats, c).vn_active = vn_active;
48 preempt_enable();
49 }
50 xfs_stats_clear = 0;
51 }
52
53 return ret;
54}
55#endif /* CONFIG_PROC_FS */
56
57STATIC ctl_table xfs_table[] = {
58 {XFS_RESTRICT_CHOWN, "restrict_chown", &xfs_params.restrict_chown.val,
59 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
Nathan Scotta844f452005-11-02 14:38:42 +110060 &sysctl_intvec, NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 &xfs_params.restrict_chown.min, &xfs_params.restrict_chown.max},
62
63 {XFS_SGID_INHERIT, "irix_sgid_inherit", &xfs_params.sgid_inherit.val,
64 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
65 &sysctl_intvec, NULL,
66 &xfs_params.sgid_inherit.min, &xfs_params.sgid_inherit.max},
67
68 {XFS_SYMLINK_MODE, "irix_symlink_mode", &xfs_params.symlink_mode.val,
69 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
Nathan Scotta844f452005-11-02 14:38:42 +110070 &sysctl_intvec, NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 &xfs_params.symlink_mode.min, &xfs_params.symlink_mode.max},
72
73 {XFS_PANIC_MASK, "panic_mask", &xfs_params.panic_mask.val,
74 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
Nathan Scotta844f452005-11-02 14:38:42 +110075 &sysctl_intvec, NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -070076 &xfs_params.panic_mask.min, &xfs_params.panic_mask.max},
77
78 {XFS_ERRLEVEL, "error_level", &xfs_params.error_level.val,
79 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
Nathan Scotta844f452005-11-02 14:38:42 +110080 &sysctl_intvec, NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 &xfs_params.error_level.min, &xfs_params.error_level.max},
82
83 {XFS_SYNCD_TIMER, "xfssyncd_centisecs", &xfs_params.syncd_timer.val,
84 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
Nathan Scotta844f452005-11-02 14:38:42 +110085 &sysctl_intvec, NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -070086 &xfs_params.syncd_timer.min, &xfs_params.syncd_timer.max},
87
88 {XFS_INHERIT_SYNC, "inherit_sync", &xfs_params.inherit_sync.val,
89 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
90 &sysctl_intvec, NULL,
91 &xfs_params.inherit_sync.min, &xfs_params.inherit_sync.max},
92
93 {XFS_INHERIT_NODUMP, "inherit_nodump", &xfs_params.inherit_nodump.val,
94 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
95 &sysctl_intvec, NULL,
96 &xfs_params.inherit_nodump.min, &xfs_params.inherit_nodump.max},
97
98 {XFS_INHERIT_NOATIME, "inherit_noatime", &xfs_params.inherit_noatim.val,
99 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
100 &sysctl_intvec, NULL,
101 &xfs_params.inherit_noatim.min, &xfs_params.inherit_noatim.max},
Nathan Scotta844f452005-11-02 14:38:42 +1100102
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 {XFS_BUF_TIMER, "xfsbufd_centisecs", &xfs_params.xfs_buf_timer.val,
104 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
105 &sysctl_intvec, NULL,
106 &xfs_params.xfs_buf_timer.min, &xfs_params.xfs_buf_timer.max},
107
108 {XFS_BUF_AGE, "age_buffer_centisecs", &xfs_params.xfs_buf_age.val,
109 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
110 &sysctl_intvec, NULL,
111 &xfs_params.xfs_buf_age.min, &xfs_params.xfs_buf_age.max},
112
113 {XFS_INHERIT_NOSYM, "inherit_nosymlinks", &xfs_params.inherit_nosym.val,
114 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
115 &sysctl_intvec, NULL,
116 &xfs_params.inherit_nosym.min, &xfs_params.inherit_nosym.max},
117
118 {XFS_ROTORSTEP, "rotorstep", &xfs_params.rotorstep.val,
119 sizeof(int), 0644, NULL, &proc_dointvec_minmax,
Nathan Scotta844f452005-11-02 14:38:42 +1100120 &sysctl_intvec, NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 &xfs_params.rotorstep.min, &xfs_params.rotorstep.max},
122
123 /* please keep this the last entry */
124#ifdef CONFIG_PROC_FS
125 {XFS_STATS_CLEAR, "stats_clear", &xfs_params.stats_clear.val,
126 sizeof(int), 0644, NULL, &xfs_stats_clear_proc_handler,
Nathan Scotta844f452005-11-02 14:38:42 +1100127 &sysctl_intvec, NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 &xfs_params.stats_clear.min, &xfs_params.stats_clear.max},
129#endif /* CONFIG_PROC_FS */
130
131 {0}
132};
133
134STATIC ctl_table xfs_dir_table[] = {
135 {FS_XFS, "xfs", NULL, 0, 0555, xfs_table},
136 {0}
137};
138
139STATIC ctl_table xfs_root_table[] = {
140 {CTL_FS, "fs", NULL, 0, 0555, xfs_dir_table},
141 {0}
142};
143
144void
145xfs_sysctl_register(void)
146{
147 xfs_table_header = register_sysctl_table(xfs_root_table, 1);
148}
149
150void
151xfs_sysctl_unregister(void)
152{
153 if (xfs_table_header)
154 unregister_sysctl_table(xfs_table_header);
155}