| /* |
| * sysfs.h - definitions for the device driver filesystem |
| * |
| * Copyright (c) 2001,2002 Patrick Mochel |
| * Copyright (c) 2004 Silicon Graphics, Inc. |
| * |
| * Please see Documentation/filesystems/sysfs.txt for more information. |
| */ |
| |
| #ifndef _SYSFS_H_ |
| #define _SYSFS_H_ |
| |
| #include <linux/compiler.h> |
| #include <linux/list.h> |
| #include <asm/atomic.h> |
| |
| struct kobject; |
| struct module; |
| struct nameidata; |
| |
| struct attribute { |
| const char * name; |
| struct module * owner; |
| mode_t mode; |
| }; |
| |
| struct attribute_group { |
| const char * name; |
| 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, .owner = THIS_MODULE }, \ |
| .show = _show, \ |
| .store = _store, \ |
| } |
| |
| #define __ATTR_RO(_name) { \ |
| .attr = { .name = __stringify(_name), .mode = 0444, .owner = THIS_MODULE }, \ |
| .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 *, char *, loff_t, size_t); |
| ssize_t (*write)(struct kobject *, 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 { |
| atomic_t s_count; |
| struct list_head s_sibling; |
| struct list_head s_children; |
| void * s_element; |
| int s_type; |
| umode_t s_mode; |
| struct dentry * s_dentry; |
| struct iattr * s_iattr; |
| atomic_t s_event; |
| }; |
| |
| #define SYSFS_ROOT 0x0001 |
| #define SYSFS_DIR 0x0002 |
| #define SYSFS_KOBJ_ATTR 0x0004 |
| #define SYSFS_KOBJ_BIN_ATTR 0x0008 |
| #define SYSFS_KOBJ_LINK 0x0020 |
| #define SYSFS_NOT_PINNED (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR | SYSFS_KOBJ_LINK) |
| |
| #ifdef CONFIG_SYSFS |
| |
| extern int __must_check |
| sysfs_create_dir(struct kobject *, struct dentry *); |
| |
| extern void |
| sysfs_remove_dir(struct kobject *); |
| |
| extern int __must_check |
| sysfs_rename_dir(struct kobject *, struct dentry *, const char *new_name); |
| |
| extern int __must_check |
| sysfs_move_dir(struct kobject *, struct kobject *); |
| |
| extern int __must_check |
| sysfs_create_file(struct kobject *, const struct attribute *); |
| |
| extern int __must_check |
| sysfs_update_file(struct kobject *, const struct attribute *); |
| |
| extern int __must_check |
| sysfs_chmod_file(struct kobject *kobj, struct attribute *attr, mode_t mode); |
| |
| extern void |
| sysfs_remove_file(struct kobject *, const struct attribute *); |
| |
| extern int __must_check |
| sysfs_create_link(struct kobject * kobj, struct kobject * target, const char * name); |
| |
| extern void |
| sysfs_remove_link(struct kobject *, const char * name); |
| |
| 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_group(struct kobject *, |
| const struct attribute_group *); |
| void sysfs_remove_group(struct kobject *, const struct attribute_group *); |
| void sysfs_notify(struct kobject * k, char *dir, char *attr); |
| |
| |
| extern int sysfs_make_shadowed_dir(struct kobject *kobj, |
| void * (*follow_link)(struct dentry *, struct nameidata *)); |
| extern struct dentry *sysfs_create_shadow_dir(struct kobject *kobj); |
| extern void sysfs_remove_shadow_dir(struct dentry *dir); |
| |
| extern int __must_check sysfs_init(void); |
| |
| #else /* CONFIG_SYSFS */ |
| |
| static inline int sysfs_create_dir(struct kobject * k, struct dentry *shadow) |
| { |
| return 0; |
| } |
| |
| static inline void sysfs_remove_dir(struct kobject * k) |
| { |
| ; |
| } |
| |
| static inline int sysfs_rename_dir(struct kobject * k, |
| struct dentry *new_parent, |
| const char *new_name) |
| { |
| return 0; |
| } |
| |
| static inline int sysfs_move_dir(struct kobject * k, struct kobject * new_parent) |
| { |
| return 0; |
| } |
| |
| static inline int sysfs_create_file(struct kobject * k, const struct attribute * a) |
| { |
| return 0; |
| } |
| |
| static inline int sysfs_update_file(struct kobject * k, const struct attribute * a) |
| { |
| 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 * k, const struct attribute * a) |
| { |
| ; |
| } |
| |
| static inline int sysfs_create_link(struct kobject * k, struct kobject * t, const char * n) |
| { |
| return 0; |
| } |
| |
| static inline void sysfs_remove_link(struct kobject * k, const char * name) |
| { |
| ; |
| } |
| |
| |
| static inline int sysfs_create_bin_file(struct kobject * k, struct bin_attribute * a) |
| { |
| return 0; |
| } |
| |
| static inline int sysfs_remove_bin_file(struct kobject * k, struct bin_attribute * a) |
| { |
| return 0; |
| } |
| |
| static inline int sysfs_create_group(struct kobject * k, const struct attribute_group *g) |
| { |
| return 0; |
| } |
| |
| static inline void sysfs_remove_group(struct kobject * k, const struct attribute_group * g) |
| { |
| ; |
| } |
| |
| static inline void sysfs_notify(struct kobject * k, char *dir, char *attr) |
| { |
| } |
| |
| static inline int sysfs_make_shadowed_dir(struct kobject *kobj, |
| void * (*follow_link)(struct dentry *, struct nameidata *)) |
| { |
| return 0; |
| } |
| |
| static inline int __must_check sysfs_init(void) |
| { |
| return 0; |
| } |
| |
| #endif /* CONFIG_SYSFS */ |
| |
| #endif /* _SYSFS_H_ */ |