diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/kobject.h | 57 |
1 files changed, 51 insertions, 6 deletions
diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 13bd0e87af7b..55e37a5d405e 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -138,17 +138,62 @@ struct kset_uevent_ops { struct kobj_attribute { struct attribute attr; - ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr, - char *buf); - ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr, - const char *buf, size_t count); + __SYSFS_FUNCTION_ALTERNATIVE( + ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr, char *buf); + ssize_t (*show_const)(struct kobject *kobj, const struct kobj_attribute *attr, + char *buf); + ); + __SYSFS_FUNCTION_ALTERNATIVE( + ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr, + const char *buf, size_t count); + ssize_t (*store_const)(struct kobject *kobj, const struct kobj_attribute *attr, + const char *buf, size_t count); + ); }; +typedef ssize_t __kobj_show_handler_const(struct kobject *kobj, const struct kobj_attribute *attr, + char *buf); +typedef ssize_t __kobj_store_handler_const(struct kobject *kobj, const struct kobj_attribute *attr, + const char *buf, size_t count); + +#ifdef CONFIG_CFI + +#define __KOBJ_ATTR_SHOW_STORE(_show, _store) \ + .show = _Generic(_show, \ + __kobj_show_handler_const * : NULL, \ + default : _show \ + ), \ + .show_const = _Generic(_show, \ + __kobj_show_handler_const * : _show, \ + default : NULL \ + ), \ + .store = _Generic(_store, \ + __kobj_store_handler_const * : NULL, \ + default : _store \ + ), \ + .store_const = _Generic(_store, \ + __kobj_store_handler_const * : _store, \ + default : NULL \ + ), + +#else + +#define __KOBJ_ATTR_SHOW_STORE(_show, _store) \ + .show = _Generic(_show, \ + __kobj_show_handler_const * : (void *)_show, \ + default : _show \ + ), \ + .store = _Generic(_store, \ + __kobj_store_handler_const * : (void *)_store, \ + default : _store \ + ), \ + +#endif + #define __KOBJ_ATTR(_name, _mode, _show, _store) { \ .attr = { .name = __stringify(_name), \ .mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \ - .show = _show, \ - .store = _store, \ + __KOBJ_ATTR_SHOW_STORE(_show, _store) \ } #define __KOBJ_ATTR_RO_MODE(_name, _mode) \ |