781 lines
23 KiB
C
781 lines
23 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* 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.rst for more information.
|
|
*/
|
|
|
|
#ifndef _SYSFS_H_
|
|
#define _SYSFS_H_
|
|
|
|
#include <linux/kernfs.h>
|
|
#include <linux/compiler.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/list.h>
|
|
#include <linux/lockdep.h>
|
|
#include <linux/kobject_ns.h>
|
|
#include <linux/stat.h>
|
|
#include <linux/atomic.h>
|
|
|
|
struct kobject;
|
|
struct module;
|
|
struct bin_attribute;
|
|
enum kobj_ns_type;
|
|
|
|
struct attribute {
|
|
const char *name;
|
|
umode_t mode;
|
|
#ifdef CONFIG_DEBUG_LOCK_ALLOC
|
|
bool ignore_lockdep:1;
|
|
struct lock_class_key *key;
|
|
struct lock_class_key skey;
|
|
#endif
|
|
};
|
|
|
|
/**
|
|
* sysfs_attr_init - initialize a dynamically allocated sysfs attribute
|
|
* @attr: struct attribute to initialize
|
|
*
|
|
* Initialize a dynamically allocated struct attribute so we can
|
|
* make lockdep happy. This is a new requirement for attributes
|
|
* and initially this is only needed when lockdep is enabled.
|
|
* Lockdep gives a nice error when your attribute is added to
|
|
* sysfs if you don't have this.
|
|
*/
|
|
#ifdef CONFIG_DEBUG_LOCK_ALLOC
|
|
#define sysfs_attr_init(attr) \
|
|
do { \
|
|
static struct lock_class_key __key; \
|
|
\
|
|
(attr)->key = &__key; \
|
|
} while (0)
|
|
#else
|
|
#define sysfs_attr_init(attr) do {} while (0)
|
|
#endif
|
|
|
|
/**
|
|
* struct attribute_group - data structure used to declare an attribute group.
|
|
* @name: Optional: Attribute group name
|
|
* If specified, the attribute group will be created in a
|
|
* new subdirectory with this name. Additionally when a
|
|
* group is named, @is_visible and @is_bin_visible may
|
|
* return SYSFS_GROUP_INVISIBLE to control visibility of
|
|
* the directory itself.
|
|
* @is_visible: Optional: Function to return permissions associated with an
|
|
* attribute of the group. Will be called repeatedly for
|
|
* each non-binary attribute in the group. Only read/write
|
|
* permissions as well as SYSFS_PREALLOC are accepted. Must
|
|
* return 0 if an attribute is not visible. The returned
|
|
* value will replace static permissions defined in struct
|
|
* attribute. Use SYSFS_GROUP_VISIBLE() when assigning this
|
|
* callback to specify separate _group_visible() and
|
|
* _attr_visible() handlers.
|
|
* @is_bin_visible:
|
|
* Optional: Function to return permissions associated with a
|
|
* binary attribute of the group. Will be called repeatedly
|
|
* for each binary attribute in the group. Only read/write
|
|
* permissions as well as SYSFS_PREALLOC (and the
|
|
* visibility flags for named groups) are accepted. Must
|
|
* return 0 if a binary attribute is not visible. The
|
|
* returned value will replace static permissions defined
|
|
* in struct bin_attribute. If @is_visible is not set, Use
|
|
* SYSFS_GROUP_VISIBLE() when assigning this callback to
|
|
* specify separate _group_visible() and _attr_visible()
|
|
* handlers.
|
|
* @attrs: Pointer to NULL terminated list of attributes.
|
|
* @bin_attrs: Pointer to NULL terminated list of binary attributes.
|
|
* Either attrs or bin_attrs or both must be provided.
|
|
*/
|
|
struct attribute_group {
|
|
const char *name;
|
|
umode_t (*is_visible)(struct kobject *,
|
|
struct attribute *, int);
|
|
umode_t (*is_bin_visible)(struct kobject *,
|
|
struct bin_attribute *, int);
|
|
struct attribute **attrs;
|
|
struct bin_attribute **bin_attrs;
|
|
};
|
|
|
|
#define SYSFS_PREALLOC 010000
|
|
#define SYSFS_GROUP_INVISIBLE 020000
|
|
|
|
/*
|
|
* DEFINE_SYSFS_GROUP_VISIBLE(name):
|
|
* A helper macro to pair with the assignment of ".is_visible =
|
|
* SYSFS_GROUP_VISIBLE(name)", that arranges for the directory
|
|
* associated with a named attribute_group to optionally be hidden.
|
|
* This allows for static declaration of attribute_groups, and the
|
|
* simplification of attribute visibility lifetime that implies,
|
|
* without polluting sysfs with empty attribute directories.
|
|
* Ex.
|
|
*
|
|
* static umode_t example_attr_visible(struct kobject *kobj,
|
|
* struct attribute *attr, int n)
|
|
* {
|
|
* if (example_attr_condition)
|
|
* return 0;
|
|
* else if (ro_attr_condition)
|
|
* return 0444;
|
|
* return a->mode;
|
|
* }
|
|
*
|
|
* static bool example_group_visible(struct kobject *kobj)
|
|
* {
|
|
* if (example_group_condition)
|
|
* return false;
|
|
* return true;
|
|
* }
|
|
*
|
|
* DEFINE_SYSFS_GROUP_VISIBLE(example);
|
|
*
|
|
* static struct attribute_group example_group = {
|
|
* .name = "example",
|
|
* .is_visible = SYSFS_GROUP_VISIBLE(example),
|
|
* .attrs = &example_attrs,
|
|
* };
|
|
*
|
|
* Note that it expects <name>_attr_visible and <name>_group_visible to
|
|
* be defined. For cases where individual attributes do not need
|
|
* separate visibility consideration, only entire group visibility at
|
|
* once, see DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE().
|
|
*/
|
|
#define DEFINE_SYSFS_GROUP_VISIBLE(name) \
|
|
static inline umode_t sysfs_group_visible_##name( \
|
|
struct kobject *kobj, struct attribute *attr, int n) \
|
|
{ \
|
|
if (n == 0 && !name##_group_visible(kobj)) \
|
|
return SYSFS_GROUP_INVISIBLE; \
|
|
return name##_attr_visible(kobj, attr, n); \
|
|
}
|
|
|
|
/*
|
|
* DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE(name):
|
|
* A helper macro to pair with SYSFS_GROUP_VISIBLE() that like
|
|
* DEFINE_SYSFS_GROUP_VISIBLE() controls group visibility, but does
|
|
* not require the implementation of a per-attribute visibility
|
|
* callback.
|
|
* Ex.
|
|
*
|
|
* static bool example_group_visible(struct kobject *kobj)
|
|
* {
|
|
* if (example_group_condition)
|
|
* return false;
|
|
* return true;
|
|
* }
|
|
*
|
|
* DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE(example);
|
|
*
|
|
* static struct attribute_group example_group = {
|
|
* .name = "example",
|
|
* .is_visible = SYSFS_GROUP_VISIBLE(example),
|
|
* .attrs = &example_attrs,
|
|
* };
|
|
*/
|
|
#define DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE(name) \
|
|
static inline umode_t sysfs_group_visible_##name( \
|
|
struct kobject *kobj, struct attribute *a, int n) \
|
|
{ \
|
|
if (n == 0 && !name##_group_visible(kobj)) \
|
|
return SYSFS_GROUP_INVISIBLE; \
|
|
return a->mode; \
|
|
}
|
|
|
|
/*
|
|
* Same as DEFINE_SYSFS_GROUP_VISIBLE, but for groups with only binary
|
|
* attributes. If an attribute_group defines both text and binary
|
|
* attributes, the group visibility is determined by the function
|
|
* specified to is_visible() not is_bin_visible()
|
|
*/
|
|
#define DEFINE_SYSFS_BIN_GROUP_VISIBLE(name) \
|
|
static inline umode_t sysfs_group_visible_##name( \
|
|
struct kobject *kobj, struct bin_attribute *attr, int n) \
|
|
{ \
|
|
if (n == 0 && !name##_group_visible(kobj)) \
|
|
return SYSFS_GROUP_INVISIBLE; \
|
|
return name##_attr_visible(kobj, attr, n); \
|
|
}
|
|
|
|
#define DEFINE_SIMPLE_SYSFS_BIN_GROUP_VISIBLE(name) \
|
|
static inline umode_t sysfs_group_visible_##name( \
|
|
struct kobject *kobj, struct bin_attribute *a, int n) \
|
|
{ \
|
|
if (n == 0 && !name##_group_visible(kobj)) \
|
|
return SYSFS_GROUP_INVISIBLE; \
|
|
return a->mode; \
|
|
}
|
|
|
|
#define SYSFS_GROUP_VISIBLE(fn) sysfs_group_visible_##fn
|
|
|
|
/*
|
|
* 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 = VERIFY_OCTAL_PERMISSIONS(_mode) }, \
|
|
.show = _show, \
|
|
.store = _store, \
|
|
}
|
|
|
|
#define __ATTR_PREALLOC(_name, _mode, _show, _store) { \
|
|
.attr = {.name = __stringify(_name), \
|
|
.mode = SYSFS_PREALLOC | VERIFY_OCTAL_PERMISSIONS(_mode) },\
|
|
.show = _show, \
|
|
.store = _store, \
|
|
}
|
|
|
|
#define __ATTR_RO(_name) { \
|
|
.attr = { .name = __stringify(_name), .mode = 0444 }, \
|
|
.show = _name##_show, \
|
|
}
|
|
|
|
#define __ATTR_RO_MODE(_name, _mode) { \
|
|
.attr = { .name = __stringify(_name), \
|
|
.mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \
|
|
.show = _name##_show, \
|
|
}
|
|
|
|
#define __ATTR_RW_MODE(_name, _mode) { \
|
|
.attr = { .name = __stringify(_name), \
|
|
.mode = VERIFY_OCTAL_PERMISSIONS(_mode) }, \
|
|
.show = _name##_show, \
|
|
.store = _name##_store, \
|
|
}
|
|
|
|
#define __ATTR_WO(_name) { \
|
|
.attr = { .name = __stringify(_name), .mode = 0200 }, \
|
|
.store = _name##_store, \
|
|
}
|
|
|
|
#define __ATTR_RW(_name) __ATTR(_name, 0644, _name##_show, _name##_store)
|
|
|
|
#define __ATTR_NULL { .attr = { .name = NULL } }
|
|
|
|
#ifdef CONFIG_DEBUG_LOCK_ALLOC
|
|
#define __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) { \
|
|
.attr = {.name = __stringify(_name), .mode = _mode, \
|
|
.ignore_lockdep = true }, \
|
|
.show = _show, \
|
|
.store = _store, \
|
|
}
|
|
#else
|
|
#define __ATTR_IGNORE_LOCKDEP __ATTR
|
|
#endif
|
|
|
|
#define __ATTRIBUTE_GROUPS(_name) \
|
|
static const struct attribute_group *_name##_groups[] = { \
|
|
&_name##_group, \
|
|
NULL, \
|
|
}
|
|
|
|
#define ATTRIBUTE_GROUPS(_name) \
|
|
static const struct attribute_group _name##_group = { \
|
|
.attrs = _name##_attrs, \
|
|
}; \
|
|
__ATTRIBUTE_GROUPS(_name)
|
|
|
|
#define BIN_ATTRIBUTE_GROUPS(_name) \
|
|
static const struct attribute_group _name##_group = { \
|
|
.bin_attrs = _name##_attrs, \
|
|
}; \
|
|
__ATTRIBUTE_GROUPS(_name)
|
|
|
|
struct file;
|
|
struct vm_area_struct;
|
|
struct address_space;
|
|
|
|
struct bin_attribute {
|
|
struct attribute attr;
|
|
size_t size;
|
|
void *private;
|
|
struct address_space *(*f_mapping)(void);
|
|
ssize_t (*read)(struct file *, struct kobject *, struct bin_attribute *,
|
|
char *, loff_t, size_t);
|
|
ssize_t (*write)(struct file *, struct kobject *, struct bin_attribute *,
|
|
char *, loff_t, size_t);
|
|
loff_t (*llseek)(struct file *, struct kobject *, struct bin_attribute *,
|
|
loff_t, int);
|
|
int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr,
|
|
struct vm_area_struct *vma);
|
|
};
|
|
|
|
/**
|
|
* sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute
|
|
* @attr: struct bin_attribute to initialize
|
|
*
|
|
* Initialize a dynamically allocated struct bin_attribute so we
|
|
* can make lockdep happy. This is a new requirement for
|
|
* attributes and initially this is only needed when lockdep is
|
|
* enabled. Lockdep gives a nice error when your attribute is
|
|
* added to sysfs if you don't have this.
|
|
*/
|
|
#define sysfs_bin_attr_init(bin_attr) sysfs_attr_init(&(bin_attr)->attr)
|
|
|
|
/* macros to create static binary attributes easier */
|
|
#define __BIN_ATTR(_name, _mode, _read, _write, _size) { \
|
|
.attr = { .name = __stringify(_name), .mode = _mode }, \
|
|
.read = _read, \
|
|
.write = _write, \
|
|
.size = _size, \
|
|
}
|
|
|
|
#define __BIN_ATTR_RO(_name, _size) { \
|
|
.attr = { .name = __stringify(_name), .mode = 0444 }, \
|
|
.read = _name##_read, \
|
|
.size = _size, \
|
|
}
|
|
|
|
#define __BIN_ATTR_WO(_name, _size) { \
|
|
.attr = { .name = __stringify(_name), .mode = 0200 }, \
|
|
.write = _name##_write, \
|
|
.size = _size, \
|
|
}
|
|
|
|
#define __BIN_ATTR_RW(_name, _size) \
|
|
__BIN_ATTR(_name, 0644, _name##_read, _name##_write, _size)
|
|
|
|
#define __BIN_ATTR_NULL __ATTR_NULL
|
|
|
|
#define BIN_ATTR(_name, _mode, _read, _write, _size) \
|
|
struct bin_attribute bin_attr_##_name = __BIN_ATTR(_name, _mode, _read, \
|
|
_write, _size)
|
|
|
|
#define BIN_ATTR_RO(_name, _size) \
|
|
struct bin_attribute bin_attr_##_name = __BIN_ATTR_RO(_name, _size)
|
|
|
|
#define BIN_ATTR_WO(_name, _size) \
|
|
struct bin_attribute bin_attr_##_name = __BIN_ATTR_WO(_name, _size)
|
|
|
|
#define BIN_ATTR_RW(_name, _size) \
|
|
struct bin_attribute bin_attr_##_name = __BIN_ATTR_RW(_name, _size)
|
|
|
|
|
|
#define __BIN_ATTR_ADMIN_RO(_name, _size) { \
|
|
.attr = { .name = __stringify(_name), .mode = 0400 }, \
|
|
.read = _name##_read, \
|
|
.size = _size, \
|
|
}
|
|
|
|
#define __BIN_ATTR_ADMIN_RW(_name, _size) \
|
|
__BIN_ATTR(_name, 0600, _name##_read, _name##_write, _size)
|
|
|
|
#define BIN_ATTR_ADMIN_RO(_name, _size) \
|
|
struct bin_attribute bin_attr_##_name = __BIN_ATTR_ADMIN_RO(_name, _size)
|
|
|
|
#define BIN_ATTR_ADMIN_RW(_name, _size) \
|
|
struct bin_attribute bin_attr_##_name = __BIN_ATTR_ADMIN_RW(_name, _size)
|
|
|
|
struct sysfs_ops {
|
|
ssize_t (*show)(struct kobject *, struct attribute *, char *);
|
|
ssize_t (*store)(struct kobject *, struct attribute *, const char *, size_t);
|
|
};
|
|
|
|
#ifdef CONFIG_SYSFS
|
|
|
|
int __must_check sysfs_create_dir_ns(struct kobject *kobj, const void *ns);
|
|
void sysfs_remove_dir(struct kobject *kobj);
|
|
int __must_check sysfs_rename_dir_ns(struct kobject *kobj, const char *new_name,
|
|
const void *new_ns);
|
|
int __must_check sysfs_move_dir_ns(struct kobject *kobj,
|
|
struct kobject *new_parent_kobj,
|
|
const void *new_ns);
|
|
int __must_check sysfs_create_mount_point(struct kobject *parent_kobj,
|
|
const char *name);
|
|
void sysfs_remove_mount_point(struct kobject *parent_kobj,
|
|
const char *name);
|
|
|
|
int __must_check sysfs_create_file_ns(struct kobject *kobj,
|
|
const struct attribute *attr,
|
|
const void *ns);
|
|
int __must_check sysfs_create_files(struct kobject *kobj,
|
|
const struct attribute * const *attr);
|
|
int __must_check sysfs_chmod_file(struct kobject *kobj,
|
|
const struct attribute *attr, umode_t mode);
|
|
struct kernfs_node *sysfs_break_active_protection(struct kobject *kobj,
|
|
const struct attribute *attr);
|
|
void sysfs_unbreak_active_protection(struct kernfs_node *kn);
|
|
void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr,
|
|
const void *ns);
|
|
bool sysfs_remove_file_self(struct kobject *kobj, const struct attribute *attr);
|
|
void sysfs_remove_files(struct kobject *kobj, const struct attribute * const *attr);
|
|
|
|
int __must_check sysfs_create_bin_file(struct kobject *kobj,
|
|
const struct bin_attribute *attr);
|
|
void sysfs_remove_bin_file(struct kobject *kobj,
|
|
const 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 sysfs_rename_link_ns(struct kobject *kobj, struct kobject *target,
|
|
const char *old_name, const char *new_name,
|
|
const void *new_ns);
|
|
|
|
void sysfs_delete_link(struct kobject *dir, struct kobject *targ,
|
|
const char *name);
|
|
|
|
int __must_check sysfs_create_group(struct kobject *kobj,
|
|
const struct attribute_group *grp);
|
|
int __must_check sysfs_create_groups(struct kobject *kobj,
|
|
const struct attribute_group **groups);
|
|
int __must_check sysfs_update_groups(struct kobject *kobj,
|
|
const struct attribute_group **groups);
|
|
int sysfs_update_group(struct kobject *kobj,
|
|
const struct attribute_group *grp);
|
|
void sysfs_remove_group(struct kobject *kobj,
|
|
const struct attribute_group *grp);
|
|
void sysfs_remove_groups(struct kobject *kobj,
|
|
const struct attribute_group **groups);
|
|
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);
|
|
int sysfs_merge_group(struct kobject *kobj,
|
|
const struct attribute_group *grp);
|
|
void sysfs_unmerge_group(struct kobject *kobj,
|
|
const struct attribute_group *grp);
|
|
int sysfs_add_link_to_group(struct kobject *kobj, const char *group_name,
|
|
struct kobject *target, const char *link_name);
|
|
void sysfs_remove_link_from_group(struct kobject *kobj, const char *group_name,
|
|
const char *link_name);
|
|
int compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj,
|
|
struct kobject *target_kobj,
|
|
const char *target_name,
|
|
const char *symlink_name);
|
|
|
|
void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr);
|
|
|
|
int __must_check sysfs_init(void);
|
|
|
|
static inline void sysfs_enable_ns(struct kernfs_node *kn)
|
|
{
|
|
return kernfs_enable_ns(kn);
|
|
}
|
|
|
|
int sysfs_file_change_owner(struct kobject *kobj, const char *name, kuid_t kuid,
|
|
kgid_t kgid);
|
|
int sysfs_change_owner(struct kobject *kobj, kuid_t kuid, kgid_t kgid);
|
|
int sysfs_link_change_owner(struct kobject *kobj, struct kobject *targ,
|
|
const char *name, kuid_t kuid, kgid_t kgid);
|
|
int sysfs_groups_change_owner(struct kobject *kobj,
|
|
const struct attribute_group **groups,
|
|
kuid_t kuid, kgid_t kgid);
|
|
int sysfs_group_change_owner(struct kobject *kobj,
|
|
const struct attribute_group *groups, kuid_t kuid,
|
|
kgid_t kgid);
|
|
__printf(2, 3)
|
|
int sysfs_emit(char *buf, const char *fmt, ...);
|
|
__printf(3, 4)
|
|
int sysfs_emit_at(char *buf, int at, const char *fmt, ...);
|
|
|
|
#else /* CONFIG_SYSFS */
|
|
|
|
static inline int sysfs_create_dir_ns(struct kobject *kobj, const void *ns)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sysfs_remove_dir(struct kobject *kobj)
|
|
{
|
|
}
|
|
|
|
static inline int sysfs_rename_dir_ns(struct kobject *kobj,
|
|
const char *new_name, const void *new_ns)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sysfs_move_dir_ns(struct kobject *kobj,
|
|
struct kobject *new_parent_kobj,
|
|
const void *new_ns)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sysfs_create_mount_point(struct kobject *parent_kobj,
|
|
const char *name)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sysfs_remove_mount_point(struct kobject *parent_kobj,
|
|
const char *name)
|
|
{
|
|
}
|
|
|
|
static inline int sysfs_create_file_ns(struct kobject *kobj,
|
|
const struct attribute *attr,
|
|
const void *ns)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sysfs_create_files(struct kobject *kobj,
|
|
const struct attribute * const *attr)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sysfs_chmod_file(struct kobject *kobj,
|
|
const struct attribute *attr, umode_t mode)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline struct kernfs_node *
|
|
sysfs_break_active_protection(struct kobject *kobj,
|
|
const struct attribute *attr)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void sysfs_unbreak_active_protection(struct kernfs_node *kn)
|
|
{
|
|
}
|
|
|
|
static inline void sysfs_remove_file_ns(struct kobject *kobj,
|
|
const struct attribute *attr,
|
|
const void *ns)
|
|
{
|
|
}
|
|
|
|
static inline bool sysfs_remove_file_self(struct kobject *kobj,
|
|
const struct attribute *attr)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline void sysfs_remove_files(struct kobject *kobj,
|
|
const struct attribute * const *attr)
|
|
{
|
|
}
|
|
|
|
static inline int sysfs_create_bin_file(struct kobject *kobj,
|
|
const struct bin_attribute *attr)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sysfs_remove_bin_file(struct kobject *kobj,
|
|
const 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_rename_link_ns(struct kobject *k, struct kobject *t,
|
|
const char *old_name,
|
|
const char *new_name, const void *ns)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sysfs_delete_link(struct kobject *k, struct kobject *t,
|
|
const char *name)
|
|
{
|
|
}
|
|
|
|
static inline int sysfs_create_group(struct kobject *kobj,
|
|
const struct attribute_group *grp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sysfs_create_groups(struct kobject *kobj,
|
|
const struct attribute_group **groups)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sysfs_update_groups(struct kobject *kobj,
|
|
const struct attribute_group **groups)
|
|
{
|
|
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 void sysfs_remove_groups(struct kobject *kobj,
|
|
const struct attribute_group **groups)
|
|
{
|
|
}
|
|
|
|
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 int sysfs_merge_group(struct kobject *kobj,
|
|
const struct attribute_group *grp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sysfs_unmerge_group(struct kobject *kobj,
|
|
const struct attribute_group *grp)
|
|
{
|
|
}
|
|
|
|
static inline int sysfs_add_link_to_group(struct kobject *kobj,
|
|
const char *group_name, struct kobject *target,
|
|
const char *link_name)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sysfs_remove_link_from_group(struct kobject *kobj,
|
|
const char *group_name, const char *link_name)
|
|
{
|
|
}
|
|
|
|
static inline int compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj,
|
|
struct kobject *target_kobj,
|
|
const char *target_name,
|
|
const char *symlink_name)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sysfs_notify(struct kobject *kobj, const char *dir,
|
|
const char *attr)
|
|
{
|
|
}
|
|
|
|
static inline int __must_check sysfs_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sysfs_enable_ns(struct kernfs_node *kn)
|
|
{
|
|
}
|
|
|
|
static inline int sysfs_file_change_owner(struct kobject *kobj,
|
|
const char *name, kuid_t kuid,
|
|
kgid_t kgid)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sysfs_link_change_owner(struct kobject *kobj,
|
|
struct kobject *targ,
|
|
const char *name, kuid_t kuid,
|
|
kgid_t kgid)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sysfs_change_owner(struct kobject *kobj, kuid_t kuid, kgid_t kgid)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sysfs_groups_change_owner(struct kobject *kobj,
|
|
const struct attribute_group **groups,
|
|
kuid_t kuid, kgid_t kgid)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int sysfs_group_change_owner(struct kobject *kobj,
|
|
const struct attribute_group *groups,
|
|
kuid_t kuid, kgid_t kgid)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
__printf(2, 3)
|
|
static inline int sysfs_emit(char *buf, const char *fmt, ...)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
__printf(3, 4)
|
|
static inline int sysfs_emit_at(char *buf, int at, const char *fmt, ...)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_SYSFS */
|
|
|
|
static inline int __must_check sysfs_create_file(struct kobject *kobj,
|
|
const struct attribute *attr)
|
|
{
|
|
return sysfs_create_file_ns(kobj, attr, NULL);
|
|
}
|
|
|
|
static inline void sysfs_remove_file(struct kobject *kobj,
|
|
const struct attribute *attr)
|
|
{
|
|
sysfs_remove_file_ns(kobj, attr, NULL);
|
|
}
|
|
|
|
static inline int sysfs_rename_link(struct kobject *kobj, struct kobject *target,
|
|
const char *old_name, const char *new_name)
|
|
{
|
|
return sysfs_rename_link_ns(kobj, target, old_name, new_name, NULL);
|
|
}
|
|
|
|
static inline void sysfs_notify_dirent(struct kernfs_node *kn)
|
|
{
|
|
kernfs_notify(kn);
|
|
}
|
|
|
|
static inline struct kernfs_node *sysfs_get_dirent(struct kernfs_node *parent,
|
|
const char *name)
|
|
{
|
|
return kernfs_find_and_get(parent, name);
|
|
}
|
|
|
|
static inline struct kernfs_node *sysfs_get(struct kernfs_node *kn)
|
|
{
|
|
kernfs_get(kn);
|
|
return kn;
|
|
}
|
|
|
|
static inline void sysfs_put(struct kernfs_node *kn)
|
|
{
|
|
kernfs_put(kn);
|
|
}
|
|
|
|
#endif /* _SYSFS_H_ */
|