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20#ifndef _NILFS_SYSFS_H
21#define _NILFS_SYSFS_H
22
23#include <linux/sysfs.h>
24
25#define NILFS_ROOT_GROUP_NAME "nilfs2"
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39
40struct nilfs_sysfs_dev_subgroups {
41
42 struct kobject sg_superblock_kobj;
43 struct completion sg_superblock_kobj_unregister;
44
45
46 struct kobject sg_segctor_kobj;
47 struct completion sg_segctor_kobj_unregister;
48
49
50 struct kobject sg_mounted_snapshots_kobj;
51 struct completion sg_mounted_snapshots_kobj_unregister;
52
53
54 struct kobject sg_checkpoints_kobj;
55 struct completion sg_checkpoints_kobj_unregister;
56
57
58 struct kobject sg_segments_kobj;
59 struct completion sg_segments_kobj_unregister;
60};
61
62#define NILFS_COMMON_ATTR_STRUCT(name) \
63struct nilfs_##name##_attr { \
64 struct attribute attr; \
65 ssize_t (*show)(struct kobject *, struct attribute *, \
66 char *); \
67 ssize_t (*store)(struct kobject *, struct attribute *, \
68 const char *, size_t); \
69};
70
71NILFS_COMMON_ATTR_STRUCT(feature);
72
73#define NILFS_DEV_ATTR_STRUCT(name) \
74struct nilfs_##name##_attr { \
75 struct attribute attr; \
76 ssize_t (*show)(struct nilfs_##name##_attr *, struct the_nilfs *, \
77 char *); \
78 ssize_t (*store)(struct nilfs_##name##_attr *, struct the_nilfs *, \
79 const char *, size_t); \
80};
81
82NILFS_DEV_ATTR_STRUCT(dev);
83NILFS_DEV_ATTR_STRUCT(segments);
84NILFS_DEV_ATTR_STRUCT(mounted_snapshots);
85NILFS_DEV_ATTR_STRUCT(checkpoints);
86NILFS_DEV_ATTR_STRUCT(superblock);
87NILFS_DEV_ATTR_STRUCT(segctor);
88
89#define NILFS_CP_ATTR_STRUCT(name) \
90struct nilfs_##name##_attr { \
91 struct attribute attr; \
92 ssize_t (*show)(struct nilfs_##name##_attr *, struct nilfs_root *, \
93 char *); \
94 ssize_t (*store)(struct nilfs_##name##_attr *, struct nilfs_root *, \
95 const char *, size_t); \
96};
97
98NILFS_CP_ATTR_STRUCT(snapshot);
99
100#define NILFS_ATTR(type, name, mode, show, store) \
101 static struct nilfs_##type##_attr nilfs_##type##_attr_##name = \
102 __ATTR(name, mode, show, store)
103
104#define NILFS_INFO_ATTR(type, name) \
105 NILFS_ATTR(type, name, 0444, NULL, NULL)
106#define NILFS_RO_ATTR(type, name) \
107 NILFS_ATTR(type, name, 0444, nilfs_##type##_##name##_show, NULL)
108#define NILFS_RW_ATTR(type, name) \
109 NILFS_ATTR(type, name, 0644, \
110 nilfs_##type##_##name##_show, \
111 nilfs_##type##_##name##_store)
112
113#define NILFS_FEATURE_INFO_ATTR(name) \
114 NILFS_INFO_ATTR(feature, name)
115#define NILFS_FEATURE_RO_ATTR(name) \
116 NILFS_RO_ATTR(feature, name)
117#define NILFS_FEATURE_RW_ATTR(name) \
118 NILFS_RW_ATTR(feature, name)
119
120#define NILFS_DEV_INFO_ATTR(name) \
121 NILFS_INFO_ATTR(dev, name)
122#define NILFS_DEV_RO_ATTR(name) \
123 NILFS_RO_ATTR(dev, name)
124#define NILFS_DEV_RW_ATTR(name) \
125 NILFS_RW_ATTR(dev, name)
126
127#define NILFS_SEGMENTS_RO_ATTR(name) \
128 NILFS_RO_ATTR(segments, name)
129#define NILFS_SEGMENTS_RW_ATTR(name) \
130 NILFS_RW_ATTR(segs_info, name)
131
132#define NILFS_MOUNTED_SNAPSHOTS_RO_ATTR(name) \
133 NILFS_RO_ATTR(mounted_snapshots, name)
134
135#define NILFS_CHECKPOINTS_RO_ATTR(name) \
136 NILFS_RO_ATTR(checkpoints, name)
137#define NILFS_CHECKPOINTS_RW_ATTR(name) \
138 NILFS_RW_ATTR(checkpoints, name)
139
140#define NILFS_SNAPSHOT_INFO_ATTR(name) \
141 NILFS_INFO_ATTR(snapshot, name)
142#define NILFS_SNAPSHOT_RO_ATTR(name) \
143 NILFS_RO_ATTR(snapshot, name)
144#define NILFS_SNAPSHOT_RW_ATTR(name) \
145 NILFS_RW_ATTR(snapshot, name)
146
147#define NILFS_SUPERBLOCK_RO_ATTR(name) \
148 NILFS_RO_ATTR(superblock, name)
149#define NILFS_SUPERBLOCK_RW_ATTR(name) \
150 NILFS_RW_ATTR(superblock, name)
151
152#define NILFS_SEGCTOR_INFO_ATTR(name) \
153 NILFS_INFO_ATTR(segctor, name)
154#define NILFS_SEGCTOR_RO_ATTR(name) \
155 NILFS_RO_ATTR(segctor, name)
156#define NILFS_SEGCTOR_RW_ATTR(name) \
157 NILFS_RW_ATTR(segctor, name)
158
159#define NILFS_FEATURE_ATTR_LIST(name) \
160 (&nilfs_feature_attr_##name.attr)
161#define NILFS_DEV_ATTR_LIST(name) \
162 (&nilfs_dev_attr_##name.attr)
163#define NILFS_SEGMENTS_ATTR_LIST(name) \
164 (&nilfs_segments_attr_##name.attr)
165#define NILFS_MOUNTED_SNAPSHOTS_ATTR_LIST(name) \
166 (&nilfs_mounted_snapshots_attr_##name.attr)
167#define NILFS_CHECKPOINTS_ATTR_LIST(name) \
168 (&nilfs_checkpoints_attr_##name.attr)
169#define NILFS_SNAPSHOT_ATTR_LIST(name) \
170 (&nilfs_snapshot_attr_##name.attr)
171#define NILFS_SUPERBLOCK_ATTR_LIST(name) \
172 (&nilfs_superblock_attr_##name.attr)
173#define NILFS_SEGCTOR_ATTR_LIST(name) \
174 (&nilfs_segctor_attr_##name.attr)
175
176#endif
177