1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2001-2005 Silicon Graphics, Inc.
4 * All Rights Reserved.
5 */
6 #include "xfs.h"
7 #include "xfs_error.h"
8
9 static struct ctl_table_header *xfs_table_header;
10
11 #ifdef CONFIG_PROC_FS
12 STATIC int
13 xfs_stats_clear_proc_handler(
14 const struct ctl_table *ctl,
15 int write,
16 void *buffer,
17 size_t *lenp,
18 loff_t *ppos)
19 {
20 int ret, *valp = ctl->data;
21
22 ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
23
24 if (!ret && write && *valp) {
25 xfs_stats_clearall(xfsstats.xs_stats);
26 xfs_stats_clear = 0;
27 }
28
29 return ret;
30 }
31
32 STATIC int
33 xfs_panic_mask_proc_handler(
34 const struct ctl_table *ctl,
35 int write,
36 void *buffer,
37 size_t *lenp,
38 loff_t *ppos)
39 {
40 int ret, *valp = ctl->data;
41
42 ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
43 if (!ret && write) {
44 xfs_panic_mask = *valp;
45 #ifdef DEBUG
46 xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES);
47 #endif
48 }
49 return ret;
50 }
51 #endif /* CONFIG_PROC_FS */
52
53 STATIC int
54 xfs_deprecated_dointvec_minmax(
55 const struct ctl_table *ctl,
56 int write,
57 void *buffer,
58 size_t *lenp,
59 loff_t *ppos)
60 {
61 if (write) {
62 printk_ratelimited(KERN_WARNING
63 "XFS: %s sysctl option is deprecated.\n",
64 ctl->procname);
65 }
66 return proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
67 }
68
69 static struct ctl_table xfs_table[] = {
70 {
71 .procname = "irix_sgid_inherit",
72 .data = &xfs_params.sgid_inherit.val,
73 .maxlen = sizeof(int),
74 .mode = 0644,
75 .proc_handler = xfs_deprecated_dointvec_minmax,
76 .extra1 = &xfs_params.sgid_inherit.min,
77 .extra2 = &xfs_params.sgid_inherit.max
78 },
79 {
80 .procname = "irix_symlink_mode",
81 .data = &xfs_params.symlink_mode.val,
82 .maxlen = sizeof(int),
83 .mode = 0644,
84 .proc_handler = xfs_deprecated_dointvec_minmax,
85 .extra1 = &xfs_params.symlink_mode.min,
86 .extra2 = &xfs_params.symlink_mode.max
87 },
88 {
89 .procname = "panic_mask",
90 .data = &xfs_params.panic_mask.val,
91 .maxlen = sizeof(int),
92 .mode = 0644,
93 .proc_handler = xfs_panic_mask_proc_handler,
94 .extra1 = &xfs_params.panic_mask.min,
95 .extra2 = &xfs_params.panic_mask.max
96 },
97
98 {
99 .procname = "error_level",
100 .data = &xfs_params.error_level.val,
101 .maxlen = sizeof(int),
102 .mode = 0644,
103 .proc_handler = proc_dointvec_minmax,
104 .extra1 = &xfs_params.error_level.min,
105 .extra2 = &xfs_params.error_level.max
106 },
107 {
108 .procname = "xfssyncd_centisecs",
109 .data = &xfs_params.syncd_timer.val,
110 .maxlen = sizeof(int),
111 .mode = 0644,
112 .proc_handler = proc_dointvec_minmax,
113 .extra1 = &xfs_params.syncd_timer.min,
114 .extra2 = &xfs_params.syncd_timer.max
115 },
116 {
117 .procname = "inherit_sync",
118 .data = &xfs_params.inherit_sync.val,
119 .maxlen = sizeof(int),
120 .mode = 0644,
121 .proc_handler = proc_dointvec_minmax,
122 .extra1 = &xfs_params.inherit_sync.min,
123 .extra2 = &xfs_params.inherit_sync.max
124 },
125 {
126 .procname = "inherit_nodump",
127 .data = &xfs_params.inherit_nodump.val,
128 .maxlen = sizeof(int),
129 .mode = 0644,
130 .proc_handler = proc_dointvec_minmax,
131 .extra1 = &xfs_params.inherit_nodump.min,
132 .extra2 = &xfs_params.inherit_nodump.max
133 },
134 {
135 .procname = "inherit_noatime",
136 .data = &xfs_params.inherit_noatim.val,
137 .maxlen = sizeof(int),
138 .mode = 0644,
139 .proc_handler = proc_dointvec_minmax,
140 .extra1 = &xfs_params.inherit_noatim.min,
141 .extra2 = &xfs_params.inherit_noatim.max
142 },
143 {
144 .procname = "inherit_nosymlinks",
145 .data = &xfs_params.inherit_nosym.val,
146 .maxlen = sizeof(int),
147 .mode = 0644,
148 .proc_handler = proc_dointvec_minmax,
149 .extra1 = &xfs_params.inherit_nosym.min,
150 .extra2 = &xfs_params.inherit_nosym.max
151 },
152 {
153 .procname = "rotorstep",
154 .data = &xfs_params.rotorstep.val,
155 .maxlen = sizeof(int),
156 .mode = 0644,
157 .proc_handler = proc_dointvec_minmax,
158 .extra1 = &xfs_params.rotorstep.min,
159 .extra2 = &xfs_params.rotorstep.max
160 },
161 {
162 .procname = "inherit_nodefrag",
163 .data = &xfs_params.inherit_nodfrg.val,
164 .maxlen = sizeof(int),
165 .mode = 0644,
166 .proc_handler = proc_dointvec_minmax,
167 .extra1 = &xfs_params.inherit_nodfrg.min,
168 .extra2 = &xfs_params.inherit_nodfrg.max
169 },
170 {
171 .procname = "filestream_centisecs",
172 .data = &xfs_params.fstrm_timer.val,
173 .maxlen = sizeof(int),
174 .mode = 0644,
175 .proc_handler = proc_dointvec_minmax,
176 .extra1 = &xfs_params.fstrm_timer.min,
177 .extra2 = &xfs_params.fstrm_timer.max,
178 },
179 {
180 .procname = "speculative_prealloc_lifetime",
181 .data = &xfs_params.blockgc_timer.val,
182 .maxlen = sizeof(int),
183 .mode = 0644,
184 .proc_handler = proc_dointvec_minmax,
185 .extra1 = &xfs_params.blockgc_timer.min,
186 .extra2 = &xfs_params.blockgc_timer.max,
187 },
188 {
189 .procname = "speculative_cow_prealloc_lifetime",
190 .data = &xfs_params.blockgc_timer.val,
191 .maxlen = sizeof(int),
192 .mode = 0644,
193 .proc_handler = xfs_deprecated_dointvec_minmax,
194 .extra1 = &xfs_params.blockgc_timer.min,
195 .extra2 = &xfs_params.blockgc_timer.max,
196 },
197 /* please keep this the last entry */
198 #ifdef CONFIG_PROC_FS
199 {
200 .procname = "stats_clear",
201 .data = &xfs_params.stats_clear.val,
202 .maxlen = sizeof(int),
203 .mode = 0644,
204 .proc_handler = xfs_stats_clear_proc_handler,
205 .extra1 = &xfs_params.stats_clear.min,
206 .extra2 = &xfs_params.stats_clear.max
207 },
208 #endif /* CONFIG_PROC_FS */
209 };
210
211 int
212 xfs_sysctl_register(void)
213 {
214 xfs_table_header = register_sysctl("fs/xfs", xfs_table);
215 if (!xfs_table_header)
216 return -ENOMEM;
217 return 0;
218 }
219
220 void
221 xfs_sysctl_unregister(void)
222 {
223 unregister_sysctl_table(xfs_table_header);
224 }
225
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