diff options
Diffstat (limited to 'include/linux/sysfs.h')
| -rw-r--r-- | include/linux/sysfs.h | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h new file mode 100644 index 0000000..9d68fed --- /dev/null +++ b/include/linux/sysfs.h @@ -0,0 +1,265 @@ +/* + * sysfs.h - definitions for the device driver filesystem + * + * Copyright (c) 2001,2002 Patrick Mochel + * Copyright (c) 2004 Silicon Graphics, Inc. + * Copyright (c) 2007 SUSE Linux Products GmbH + * Copyright (c) 2007 Tejun Heo <teheo@suse.de> + * + * Please see Documentation/filesystems/sysfs.txt for more information. + */ + +#ifndef _SYSFS_H_ +#define _SYSFS_H_ + +#include <linux/compiler.h> +#include <linux/errno.h> +#include <linux/list.h> +#include <asm/atomic.h> + +struct kobject; +struct module; + +/* FIXME + * The *owner field is no longer used. + * x86 tree has been cleaned up. The owner + * attribute is still left for other arches. + */ +struct attribute { + const char *name; + struct module *owner; + mode_t mode; +}; + +struct attribute_group { + const char *name; + mode_t (*is_visible)(struct kobject *, + struct attribute *, int); + struct attribute **attrs; +}; + + + +/** + * Use these macros to make defining attributes easier. See include/linux/device.h + * for examples.. + */ + +#define __ATTR(_name,_mode,_show,_store) { \ + .attr = {.name = __stringify(_name), .mode = _mode }, \ + .show = _show, \ + .store = _store, \ +} + +#define __ATTR_RO(_name) { \ + .attr = { .name = __stringify(_name), .mode = 0444 }, \ + .show = _name##_show, \ +} + +#define __ATTR_NULL { .attr = { .name = NULL } } + +#define attr_name(_attr) (_attr).attr.name + +struct vm_area_struct; + +struct bin_attribute { + struct attribute attr; + size_t size; + void *private; + ssize_t (*read)(struct kobject *, struct bin_attribute *, + char *, loff_t, size_t); + ssize_t (*write)(struct kobject *, struct bin_attribute *, + char *, loff_t, size_t); + int (*mmap)(struct kobject *, struct bin_attribute *attr, + struct vm_area_struct *vma); +}; + +struct sysfs_ops { + ssize_t (*show)(struct kobject *, struct attribute *,char *); + ssize_t (*store)(struct kobject *,struct attribute *,const char *, size_t); +}; + +struct sysfs_dirent; + +#ifdef CONFIG_SYSFS + +int sysfs_schedule_callback(struct kobject *kobj, void (*func)(void *), + void *data, struct module *owner); + +int __must_check sysfs_create_dir(struct kobject *kobj); +void sysfs_remove_dir(struct kobject *kobj); +int __must_check sysfs_rename_dir(struct kobject *kobj, const char *new_name); +int __must_check sysfs_move_dir(struct kobject *kobj, + struct kobject *new_parent_kobj); + +int __must_check sysfs_create_file(struct kobject *kobj, + const struct attribute *attr); +int __must_check sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, + mode_t mode); +void sysfs_remove_file(struct kobject *kobj, const struct attribute *attr); + +int __must_check sysfs_create_bin_file(struct kobject *kobj, + struct bin_attribute *attr); +void sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr); + +int __must_check sysfs_create_link(struct kobject *kobj, struct kobject *target, + const char *name); +int __must_check sysfs_create_link_nowarn(struct kobject *kobj, + struct kobject *target, + const char *name); +void sysfs_remove_link(struct kobject *kobj, const char *name); + +int __must_check sysfs_create_group(struct kobject *kobj, + const struct attribute_group *grp); +int sysfs_update_group(struct kobject *kobj, + const struct attribute_group *grp); +void sysfs_remove_group(struct kobject *kobj, + const struct attribute_group *grp); +int sysfs_add_file_to_group(struct kobject *kobj, + const struct attribute *attr, const char *group); +void sysfs_remove_file_from_group(struct kobject *kobj, + const struct attribute *attr, const char *group); + +void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr); +void sysfs_notify_dirent(struct sysfs_dirent *sd); +struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd, + const unsigned char *name); +struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd); +void sysfs_put(struct sysfs_dirent *sd); +void sysfs_printk_last_file(void); +int __must_check sysfs_init(void); + +#else /* CONFIG_SYSFS */ + +static inline int sysfs_schedule_callback(struct kobject *kobj, + void (*func)(void *), void *data, struct module *owner) +{ + return -ENOSYS; +} + +static inline int sysfs_create_dir(struct kobject *kobj) +{ + return 0; +} + +static inline void sysfs_remove_dir(struct kobject *kobj) +{ +} + +static inline int sysfs_rename_dir(struct kobject *kobj, const char *new_name) +{ + return 0; +} + +static inline int sysfs_move_dir(struct kobject *kobj, + struct kobject *new_parent_kobj) +{ + return 0; +} + +static inline int sysfs_create_file(struct kobject *kobj, + const struct attribute *attr) +{ + return 0; +} + +static inline int sysfs_chmod_file(struct kobject *kobj, + struct attribute *attr, mode_t mode) +{ + return 0; +} + +static inline void sysfs_remove_file(struct kobject *kobj, + const struct attribute *attr) +{ +} + +static inline int sysfs_create_bin_file(struct kobject *kobj, + struct bin_attribute *attr) +{ + return 0; +} + +static inline void sysfs_remove_bin_file(struct kobject *kobj, + struct bin_attribute *attr) +{ +} + +static inline int sysfs_create_link(struct kobject *kobj, + struct kobject *target, const char *name) +{ + return 0; +} + +static inline int sysfs_create_link_nowarn(struct kobject *kobj, + struct kobject *target, + const char *name) +{ + return 0; +} + +static inline void sysfs_remove_link(struct kobject *kobj, const char *name) +{ +} + +static inline int sysfs_create_group(struct kobject *kobj, + const struct attribute_group *grp) +{ + return 0; +} + +static inline int sysfs_update_group(struct kobject *kobj, + const struct attribute_group *grp) +{ + return 0; +} + +static inline void sysfs_remove_group(struct kobject *kobj, + const struct attribute_group *grp) +{ +} + +static inline int sysfs_add_file_to_group(struct kobject *kobj, + const struct attribute *attr, const char *group) +{ + return 0; +} + +static inline void sysfs_remove_file_from_group(struct kobject *kobj, + const struct attribute *attr, const char *group) +{ +} + +static inline void sysfs_notify(struct kobject *kobj, const char *dir, + const char *attr) +{ +} +static inline void sysfs_notify_dirent(struct sysfs_dirent *sd) +{ +} +static inline +struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd, + const unsigned char *name) +{ + return NULL; +} +static inline struct sysfs_dirent *sysfs_get(struct sysfs_dirent *sd) +{ + return NULL; +} +static inline void sysfs_put(struct sysfs_dirent *sd) +{ +} + +static inline int __must_check sysfs_init(void) +{ + return 0; +} + +static inline void sysfs_printk_last_file(void) +{ +} + +#endif /* CONFIG_SYSFS */ + +#endif /* _SYSFS_H_ */ |
