ARM64: DTS: Add rk3399-firefly uart4 device, node as /dev/ttyS1
[firefly-linux-kernel-4.4.55.git] / fs / btrfs / sysfs.h
1 #ifndef _BTRFS_SYSFS_H_
2 #define _BTRFS_SYSFS_H_
3
4 /*
5  * Data exported through sysfs
6  */
7 extern u64 btrfs_debugfs_test;
8
9 enum btrfs_feature_set {
10         FEAT_COMPAT,
11         FEAT_COMPAT_RO,
12         FEAT_INCOMPAT,
13         FEAT_MAX
14 };
15
16 #define __INIT_KOBJ_ATTR(_name, _mode, _show, _store)                   \
17 {                                                                       \
18         .attr   = { .name = __stringify(_name), .mode = _mode },        \
19         .show   = _show,                                                \
20         .store  = _store,                                               \
21 }
22
23 #define BTRFS_ATTR_RW(_name, _show, _store)                     \
24         static struct kobj_attribute btrfs_attr_##_name =               \
25                         __INIT_KOBJ_ATTR(_name, 0644, _show, _store)
26
27 #define BTRFS_ATTR(_name, _show)                                        \
28         static struct kobj_attribute btrfs_attr_##_name =               \
29                         __INIT_KOBJ_ATTR(_name, 0444, _show, NULL)
30
31 #define BTRFS_ATTR_PTR(_name)    (&btrfs_attr_##_name.attr)
32
33 #define BTRFS_RAID_ATTR(_name, _show)                                   \
34         static struct kobj_attribute btrfs_raid_attr_##_name =          \
35                         __INIT_KOBJ_ATTR(_name, 0444, _show, NULL)
36
37 #define BTRFS_RAID_ATTR_PTR(_name)    (&btrfs_raid_attr_##_name.attr)
38
39
40 struct btrfs_feature_attr {
41         struct kobj_attribute kobj_attr;
42         enum btrfs_feature_set feature_set;
43         u64 feature_bit;
44 };
45
46 #define BTRFS_FEAT_ATTR(_name, _feature_set, _prefix, _feature_bit)          \
47 static struct btrfs_feature_attr btrfs_attr_##_name = {                      \
48         .kobj_attr = __INIT_KOBJ_ATTR(_name, S_IRUGO,                        \
49                                       btrfs_feature_attr_show,               \
50                                       btrfs_feature_attr_store),             \
51         .feature_set    = _feature_set,                                      \
52         .feature_bit    = _prefix ##_## _feature_bit,                        \
53 }
54 #define BTRFS_FEAT_ATTR_PTR(_name)    (&btrfs_attr_##_name.kobj_attr.attr)
55
56 #define BTRFS_FEAT_ATTR_COMPAT(name, feature) \
57         BTRFS_FEAT_ATTR(name, FEAT_COMPAT, BTRFS_FEATURE_COMPAT, feature)
58 #define BTRFS_FEAT_ATTR_COMPAT_RO(name, feature) \
59         BTRFS_FEAT_ATTR(name, FEAT_COMPAT_RO, BTRFS_FEATURE_COMPAT, feature)
60 #define BTRFS_FEAT_ATTR_INCOMPAT(name, feature) \
61         BTRFS_FEAT_ATTR(name, FEAT_INCOMPAT, BTRFS_FEATURE_INCOMPAT, feature)
62
63 /* convert from attribute */
64 static inline struct btrfs_feature_attr *
65 to_btrfs_feature_attr(struct kobj_attribute *a)
66 {
67         return container_of(a, struct btrfs_feature_attr, kobj_attr);
68 }
69
70 static inline struct kobj_attribute *attr_to_btrfs_attr(struct attribute *attr)
71 {
72         return container_of(attr, struct kobj_attribute, attr);
73 }
74
75 static inline struct btrfs_feature_attr *
76 attr_to_btrfs_feature_attr(struct attribute *attr)
77 {
78         return to_btrfs_feature_attr(attr_to_btrfs_attr(attr));
79 }
80
81 char *btrfs_printable_features(enum btrfs_feature_set set, u64 flags);
82 extern const char * const btrfs_feature_set_names[3];
83 extern struct kobj_type space_info_ktype;
84 extern struct kobj_type btrfs_raid_ktype;
85 int btrfs_sysfs_add_device_link(struct btrfs_fs_devices *fs_devices,
86                 struct btrfs_device *one_device);
87 int btrfs_sysfs_rm_device_link(struct btrfs_fs_devices *fs_devices,
88                 struct btrfs_device *one_device);
89 int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs,
90                                 struct kobject *parent);
91 int btrfs_sysfs_add_device(struct btrfs_fs_devices *fs_devs);
92 void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs);
93 #endif /* _BTRFS_SYSFS_H_ */