forked from luck/tmp_suning_uos_patched
958bf494ec
Symbolic permission names are used in bcache, for now octal permission numbers are encouraged to use for readability. This patch replaces all symbolic permissions by octal permission numbers. Signed-off-by: Coly Li <colyli@suse.de> Reviewed-by: Shenghui Wang <shhuiw@foxmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/* 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_clamp(file, var, min, max) \
|
|
do { \
|
|
if (attr == &sysfs_ ## file) \
|
|
return strtoul_safe_clamp(buf, var, min, max) \
|
|
?: (ssize_t) size; \
|
|
} 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_ */
|