2 * Copyright (c) 2014 Red Hat, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * 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.
14 * 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
20 #include "xfs_sysfs.h"
21 #include "xfs_format.h"
22 #include "xfs_log_format.h"
23 #include "xfs_trans_resv.h"
25 #include "xfs_log_priv.h"
26 #include "xfs_stats.h"
27 #include "xfs_mount.h"
29 struct xfs_sysfs_attr {
30 struct attribute attr;
31 ssize_t (*show)(struct kobject *kobject, char *buf);
32 ssize_t (*store)(struct kobject *kobject, const char *buf,
36 static inline struct xfs_sysfs_attr *
37 to_attr(struct attribute *attr)
39 return container_of(attr, struct xfs_sysfs_attr, attr);
42 #define XFS_SYSFS_ATTR_RW(name) \
43 static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RW(name)
44 #define XFS_SYSFS_ATTR_RO(name) \
45 static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RO(name)
46 #define XFS_SYSFS_ATTR_WO(name) \
47 static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_WO(name)
49 #define ATTR_LIST(name) &xfs_sysfs_attr_##name.attr
52 xfs_sysfs_object_show(
53 struct kobject *kobject,
54 struct attribute *attr,
57 struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
59 return xfs_attr->show ? xfs_attr->show(kobject, buf) : 0;
63 xfs_sysfs_object_store(
64 struct kobject *kobject,
65 struct attribute *attr,
69 struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
71 return xfs_attr->store ? xfs_attr->store(kobject, buf, count) : 0;
74 static const struct sysfs_ops xfs_sysfs_ops = {
75 .show = xfs_sysfs_object_show,
76 .store = xfs_sysfs_object_store,
80 * xfs_mount kobject. The mp kobject also serves as the per-mount parent object
81 * that is identified by the fsname under sysfs.
84 static inline struct xfs_mount *
85 to_mp(struct kobject *kobject)
87 struct xfs_kobj *kobj = to_kobj(kobject);
89 return container_of(kobj, struct xfs_mount, m_kobj);
96 struct kobject *kobject,
100 struct xfs_mount *mp = to_mp(kobject);
104 ret = kstrtoint(buf, 0, &val);
109 mp->m_fail_writes = true;
111 mp->m_fail_writes = false;
120 struct kobject *kobject,
123 struct xfs_mount *mp = to_mp(kobject);
125 return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_fail_writes ? 1 : 0);
127 XFS_SYSFS_ATTR_RW(fail_writes);
131 static struct attribute *xfs_mp_attrs[] = {
133 ATTR_LIST(fail_writes),
138 struct kobj_type xfs_mp_ktype = {
139 .release = xfs_sysfs_release,
140 .sysfs_ops = &xfs_sysfs_ops,
141 .default_attrs = xfs_mp_attrs,
148 log_recovery_delay_store(
149 struct kobject *kobject,
156 ret = kstrtoint(buf, 0, &val);
160 if (val < 0 || val > 60)
163 xfs_globals.log_recovery_delay = val;
169 log_recovery_delay_show(
170 struct kobject *kobject,
173 return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.log_recovery_delay);
175 XFS_SYSFS_ATTR_RW(log_recovery_delay);
177 static struct attribute *xfs_dbg_attrs[] = {
178 ATTR_LIST(log_recovery_delay),
182 struct kobj_type xfs_dbg_ktype = {
183 .release = xfs_sysfs_release,
184 .sysfs_ops = &xfs_sysfs_ops,
185 .default_attrs = xfs_dbg_attrs,
192 static inline struct xstats *
193 to_xstats(struct kobject *kobject)
195 struct xfs_kobj *kobj = to_kobj(kobject);
197 return container_of(kobj, struct xstats, xs_kobj);
202 struct kobject *kobject,
205 struct xstats *stats = to_xstats(kobject);
207 return xfs_stats_format(stats->xs_stats, buf);
209 XFS_SYSFS_ATTR_RO(stats);
213 struct kobject *kobject,
219 struct xstats *stats = to_xstats(kobject);
221 ret = kstrtoint(buf, 0, &val);
228 xfs_stats_clearall(stats->xs_stats);
231 XFS_SYSFS_ATTR_WO(stats_clear);
233 static struct attribute *xfs_stats_attrs[] = {
235 ATTR_LIST(stats_clear),
239 struct kobj_type xfs_stats_ktype = {
240 .release = xfs_sysfs_release,
241 .sysfs_ops = &xfs_sysfs_ops,
242 .default_attrs = xfs_stats_attrs,
247 static inline struct xlog *
248 to_xlog(struct kobject *kobject)
250 struct xfs_kobj *kobj = to_kobj(kobject);
252 return container_of(kobj, struct xlog, l_kobj);
257 struct kobject *kobject,
262 struct xlog *log = to_xlog(kobject);
264 spin_lock(&log->l_icloglock);
265 cycle = log->l_curr_cycle;
266 block = log->l_curr_block;
267 spin_unlock(&log->l_icloglock);
269 return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
271 XFS_SYSFS_ATTR_RO(log_head_lsn);
275 struct kobject *kobject,
280 struct xlog *log = to_xlog(kobject);
282 xlog_crack_atomic_lsn(&log->l_tail_lsn, &cycle, &block);
283 return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
285 XFS_SYSFS_ATTR_RO(log_tail_lsn);
288 reserve_grant_head_show(
289 struct kobject *kobject,
295 struct xlog *log = to_xlog(kobject);
297 xlog_crack_grant_head(&log->l_reserve_head.grant, &cycle, &bytes);
298 return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
300 XFS_SYSFS_ATTR_RO(reserve_grant_head);
303 write_grant_head_show(
304 struct kobject *kobject,
309 struct xlog *log = to_xlog(kobject);
311 xlog_crack_grant_head(&log->l_write_head.grant, &cycle, &bytes);
312 return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
314 XFS_SYSFS_ATTR_RO(write_grant_head);
318 log_badcrc_factor_store(
319 struct kobject *kobject,
323 struct xlog *log = to_xlog(kobject);
327 ret = kstrtouint(buf, 0, &val);
331 log->l_badcrc_factor = val;
337 log_badcrc_factor_show(
338 struct kobject *kobject,
341 struct xlog *log = to_xlog(kobject);
343 return snprintf(buf, PAGE_SIZE, "%d\n", log->l_badcrc_factor);
346 XFS_SYSFS_ATTR_RW(log_badcrc_factor);
349 static struct attribute *xfs_log_attrs[] = {
350 ATTR_LIST(log_head_lsn),
351 ATTR_LIST(log_tail_lsn),
352 ATTR_LIST(reserve_grant_head),
353 ATTR_LIST(write_grant_head),
355 ATTR_LIST(log_badcrc_factor),
360 struct kobj_type xfs_log_ktype = {
361 .release = xfs_sysfs_release,
362 .sysfs_ops = &xfs_sysfs_ops,
363 .default_attrs = xfs_log_attrs,