Orange Pi5 kernel

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHE_SYSFS_H_
#define _BCACHE_SYSFS_H_
 
#define KTYPE(type)							\
struct kobj_type type ## _ktype = {					\
<------>.release	= type ## _release,				\
<------>.sysfs_ops	= &((const struct sysfs_ops) {			\
<------><------>.show	= type ## _show,				\
<------><------>.store	= type ## _store				\
<------>}),								\
<------>.default_attrs	= type ## _files				\
}
 
#define SHOW(fn)							\
static ssize_t fn ## _show(struct kobject *kobj, struct attribute *attr,\
<------><------><------>   char *buf)					\
 
#define STORE(fn)							\
static ssize_t fn ## _store(struct kobject *kobj, struct attribute *attr,\
<------><------><------>    const char *buf, size_t size)		\
 
#define SHOW_LOCKED(fn)							\
SHOW(fn)								\
{									\
<------>ssize_t ret;							\
<------>mutex_lock(&bch_register_lock);					\
<------>ret = __ ## fn ## _show(kobj, attr, buf);			\
<------>mutex_unlock(&bch_register_lock);				\
<------>return ret;							\
}
 
#define STORE_LOCKED(fn)						\
STORE(fn)								\
{									\
<------>ssize_t ret;							\
<------>mutex_lock(&bch_register_lock);					\
<------>ret = __ ## fn ## _store(kobj, attr, buf, size);		\
<------>mutex_unlock(&bch_register_lock);				\
<------>return ret;							\
}
 
#define __sysfs_attribute(_name, _mode)					\
<------>static struct attribute sysfs_##_name =				\
<------><------>{ .name = #_name, .mode = _mode }
 
#define write_attribute(n)	__sysfs_attribute(n, 0200)
#define read_attribute(n)	__sysfs_attribute(n, 0444)
#define rw_attribute(n)		__sysfs_attribute(n, 0644)
 
#define sysfs_printf(file, fmt, ...)					\
do {									\
<------>if (attr == &sysfs_ ## file)					\
<------><------>return snprintf(buf, PAGE_SIZE, fmt "\n", __VA_ARGS__);	\
} while (0)
 
#define sysfs_print(file, var)						\
do {									\
<------>if (attr == &sysfs_ ## file)					\
<------><------>return snprint(buf, PAGE_SIZE, var);			\
} while (0)
 
#define sysfs_hprint(file, val)						\
do {									\
<------>if (attr == &sysfs_ ## file) {					\
<------><------>ssize_t ret = bch_hprint(buf, val);			\
<------><------>strcat(buf, "\n");					\
<------><------>return ret + 1;						\
<------>}								\
} while (0)
 
#define var_printf(_var, fmt)	sysfs_printf(_var, fmt, var(_var))
#define var_print(_var)		sysfs_print(_var, var(_var))
#define var_hprint(_var)	sysfs_hprint(_var, var(_var))
 
#define sysfs_strtoul(file, var)					\
do {									\
<------>if (attr == &sysfs_ ## file)					\
<------><------>return strtoul_safe(buf, var) ?: (ssize_t) size;	\
} while (0)
 
#define sysfs_strtoul_bool(file, var)					\
do {									\
<------>if (attr == &sysfs_ ## file) {					\
<------><------>unsigned long v = strtoul_or_return(buf);		\
<------><------><------><------><------><------><------><------><------>\
<------><------>var = v ? 1 : 0;					\
<------><------>return size;						\
<------>}								\
} while (0)
 
#define sysfs_strtoul_clamp(file, var, min, max)			\
do {									\
<------>if (attr == &sysfs_ ## file) {					\
<------><------>unsigned long v = 0;					\
<------><------>ssize_t ret;						\
<------><------>ret = strtoul_safe_clamp(buf, v, min, max);		\
<------><------>if (!ret) {						\
<------><------><------>var = v;					\
<------><------><------>return size;					\
<------><------>}							\
<------><------>return ret;						\
<------>}								\
} while (0)
 
#define strtoul_or_return(cp)						\
({									\
<------>unsigned long _v;						\
<------>int _r = kstrtoul(cp, 10, &_v);					\
<------>if (_r)								\
<------><------>return _r;						\
<------>_v;								\
})
 
#define strtoi_h_or_return(cp, v)					\
do {									\
<------>int _r = strtoi_h(cp, &v);					\
<------>if (_r)								\
<------><------>return _r;						\
} while (0)
 
#define sysfs_hatoi(file, var)						\
do {									\
<------>if (attr == &sysfs_ ## file)					\
<------><------>return strtoi_h(buf, &var) ?: (ssize_t) size;		\
} while (0)
 
#endif  /* _BCACHE_SYSFS_H_ */