[mirror_ubuntu-jammy-kernel.git] / fs / btrfs / sysfs.h

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef BTRFS_SYSFS_H
#define BTRFS_SYSFS_H

enum btrfs_feature_set {
	FEAT_COMPAT,
	FEAT_COMPAT_RO,
	FEAT_INCOMPAT,
	FEAT_MAX
};

#define __INIT_KOBJ_ATTR(_name, _mode, _show, _store)			\
{									\
	.attr	= { .name = __stringify(_name), .mode = _mode },	\
	.show	= _show,						\
	.store	= _store,						\
}

#define BTRFS_ATTR_RW(_prefix, _name, _show, _store)			\
	static struct kobj_attribute btrfs_attr_##_prefix##_##_name =	\
			__INIT_KOBJ_ATTR(_name, 0644, _show, _store)

#define BTRFS_ATTR(_prefix, _name, _show)				\
	static struct kobj_attribute btrfs_attr_##_prefix##_##_name =	\
			__INIT_KOBJ_ATTR(_name, 0444, _show, NULL)

#define BTRFS_ATTR_PTR(_prefix, _name)					\
	(&btrfs_attr_##_prefix##_##_name.attr)


struct btrfs_feature_attr {
	struct kobj_attribute kobj_attr;
	enum btrfs_feature_set feature_set;
	u64 feature_bit;
};

#define BTRFS_FEAT_ATTR(_name, _feature_set, _feature_prefix, _feature_bit)  \
static struct btrfs_feature_attr btrfs_attr_features_##_name = {	     \
	.kobj_attr = __INIT_KOBJ_ATTR(_name, S_IRUGO,			     \
				      btrfs_feature_attr_show,		     \
				      btrfs_feature_attr_store),	     \
	.feature_set	= _feature_set,					     \
	.feature_bit	= _feature_prefix ##_## _feature_bit,		     \
}
#define BTRFS_FEAT_ATTR_PTR(_name)					     \
	(&btrfs_attr_features_##_name.kobj_attr.attr)

#define BTRFS_FEAT_ATTR_COMPAT(name, feature) \
	BTRFS_FEAT_ATTR(name, FEAT_COMPAT, BTRFS_FEATURE_COMPAT, feature)
#define BTRFS_FEAT_ATTR_COMPAT_RO(name, feature) \
	BTRFS_FEAT_ATTR(name, FEAT_COMPAT_RO, BTRFS_FEATURE_COMPAT_RO, feature)
#define BTRFS_FEAT_ATTR_INCOMPAT(name, feature) \
	BTRFS_FEAT_ATTR(name, FEAT_INCOMPAT, BTRFS_FEATURE_INCOMPAT, feature)

/* convert from attribute */
static inline struct btrfs_feature_attr *
to_btrfs_feature_attr(struct kobj_attribute *a)
{
	return container_of(a, struct btrfs_feature_attr, kobj_attr);
}

static inline struct kobj_attribute *attr_to_btrfs_attr(struct attribute *attr)
{
	return container_of(attr, struct kobj_attribute, attr);
}

static inline struct btrfs_feature_attr *
attr_to_btrfs_feature_attr(struct attribute *attr)
{
	return to_btrfs_feature_attr(attr_to_btrfs_attr(attr));
}

char *btrfs_printable_features(enum btrfs_feature_set set, u64 flags);
extern const char * const btrfs_feature_set_names[FEAT_MAX];
extern struct kobj_type space_info_ktype;
extern struct kobj_type btrfs_raid_ktype;
int btrfs_sysfs_add_device_link(struct btrfs_fs_devices *fs_devices,
		struct btrfs_device *one_device);
int btrfs_sysfs_rm_device_link(struct btrfs_fs_devices *fs_devices,
                struct btrfs_device *one_device);
int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs,
				struct kobject *parent);
int btrfs_sysfs_add_device(struct btrfs_fs_devices *fs_devs);
void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs);
void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info,
		u64 bit, enum btrfs_feature_set set);

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
9888c340 DS	2
	3	#ifndef BTRFS_SYSFS_H
	4	#define BTRFS_SYSFS_H
079b72bc JM	5
079b72bc JM	6	enum btrfs_feature_set {
bbe339cc	7	FEAT_COMPAT,
079b72bc JM	8	FEAT_COMPAT_RO,
	9	FEAT_INCOMPAT,
	10	FEAT_MAX
	11	};
	12
	13	#define __INIT_KOBJ_ATTR(_name, _mode, _show, _store) \
	14	{ \
	15	.attr = { .name = __stringify(_name), .mode = _mode }, \
	16	.show = _show, \
	17	.store = _store, \
	18	}
	19
a969f4cc HK	20	#define BTRFS_ATTR_RW(_prefix, _name, _show, _store) \
a969f4cc HK	21	static struct kobj_attribute btrfs_attr_##_prefix##_##_name = \
20ee0825	22	__INIT_KOBJ_ATTR(_name, 0644, _show, _store)
98b3d389	23
a969f4cc HK	24	#define BTRFS_ATTR(_prefix, _name, _show) \
a969f4cc HK	25	static struct kobj_attribute btrfs_attr_##_prefix##_##_name = \
20ee0825	26	__INIT_KOBJ_ATTR(_name, 0444, _show, NULL)
98b3d389	27
a969f4cc HK	28	#define BTRFS_ATTR_PTR(_prefix, _name) \
a969f4cc HK	29	(&btrfs_attr_##_prefix##_##_name.attr)
6ab0a202 JM	30
6ab0a202 JM	31
079b72bc JM	32	struct btrfs_feature_attr {
	33	struct kobj_attribute kobj_attr;
	34	enum btrfs_feature_set feature_set;
	35	u64 feature_bit;
	36	};
	37
a969f4cc HK	38	#define BTRFS_FEAT_ATTR(_name, _feature_set, _feature_prefix, _feature_bit) \
a969f4cc HK	39	static struct btrfs_feature_attr btrfs_attr_features_##_name = { \
079b72bc	40	.kobj_attr = __INIT_KOBJ_ATTR(_name, S_IRUGO, \
ba631941 JM	41	btrfs_feature_attr_show, \
ba631941 JM	42	btrfs_feature_attr_store), \
079b72bc	43	.feature_set = _feature_set, \
a969f4cc	44	.feature_bit = _feature_prefix ##_## _feature_bit, \
079b72bc	45	}
a969f4cc HK	46	#define BTRFS_FEAT_ATTR_PTR(_name) \
a969f4cc HK	47	(&btrfs_attr_features_##_name.kobj_attr.attr)
079b72bc JM	48
	49	#define BTRFS_FEAT_ATTR_COMPAT(name, feature) \
	50	BTRFS_FEAT_ATTR(name, FEAT_COMPAT, BTRFS_FEATURE_COMPAT, feature)
	51	#define BTRFS_FEAT_ATTR_COMPAT_RO(name, feature) \
ba2d0840	52	BTRFS_FEAT_ATTR(name, FEAT_COMPAT_RO, BTRFS_FEATURE_COMPAT_RO, feature)
079b72bc JM	53	#define BTRFS_FEAT_ATTR_INCOMPAT(name, feature) \
	54	BTRFS_FEAT_ATTR(name, FEAT_INCOMPAT, BTRFS_FEATURE_INCOMPAT, feature)
	55
	56	/* convert from attribute */
093adbce DS	57	static inline struct btrfs_feature_attr *
	58	to_btrfs_feature_attr(struct kobj_attribute *a)
	59	{
	60	return container_of(a, struct btrfs_feature_attr, kobj_attr);
	61	}
	62
	63	static inline struct kobj_attribute attr_to_btrfs_attr(struct attribute attr)
	64	{
	65	return container_of(attr, struct kobj_attribute, attr);
	66	}
	67
	68	static inline struct btrfs_feature_attr *
	69	attr_to_btrfs_feature_attr(struct attribute *attr)
	70	{
	71	return to_btrfs_feature_attr(attr_to_btrfs_attr(attr));
	72	}
	73
3b02a68a	74	char *btrfs_printable_features(enum btrfs_feature_set set, u64 flags);
6c52157f	75	extern const char * const btrfs_feature_set_names[FEAT_MAX];
6ab0a202 JM	76	extern struct kobj_type space_info_ktype;
6ab0a202 JM	77	extern struct kobj_type btrfs_raid_ktype;
e3bd6973	78	int btrfs_sysfs_add_device_link(struct btrfs_fs_devices *fs_devices,
0d39376a	79	struct btrfs_device *one_device);
32576040	80	int btrfs_sysfs_rm_device_link(struct btrfs_fs_devices *fs_devices,
99994cde	81	struct btrfs_device *one_device);
0c10e2d4 AJ	82	int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs,
0c10e2d4 AJ	83	struct kobject *parent);
ef1a0daa	84	int btrfs_sysfs_add_device(struct btrfs_fs_devices *fs_devs);
1d1c1be3	85	void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs);
444e7516 DS	86	void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info,
	87	u64 bit, enum btrfs_feature_set set);
	88
9888c340	89	#endif