[thirdparty/systemd.git] / libsysfs / libsysfs.h

/*
 * libsysfs.h
 *
 * Header Definitions for libsysfs
 *
 * Copyright (C) IBM Corp. 2003
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */
#ifndef _LIBSYSFS_H_
#define _LIBSYSFS_H_

#include <sys/types.h>
#include "dlist.h"

/*
 * Generic #defines go here..
 */ 
#define SYSFS_FSTYPE_NAME	"sysfs"
#define SYSFS_PROC_MNTS		"/proc/mounts"
#define SYSFS_BUS_NAME		"bus"
#define SYSFS_CLASS_NAME	"class"
#define SYSFS_BLOCK_NAME	"block"
#define SYSFS_DEVICES_NAME	"devices"
#define SYSFS_DRIVERS_NAME	"drivers"
#define SYSFS_NAME_ATTRIBUTE	"name"
#define SYSFS_UNKNOWN		"unknown"
#define SYSFS_PATH_ENV		"SYSFS_PATH"

#define SYSFS_PATH_MAX		255
#define	SYSFS_NAME_LEN		50
#define SYSFS_BUS_ID_SIZE	20

#define SYSFS_METHOD_SHOW	0x01	/* attr can be read by user */
#define SYSFS_METHOD_STORE	0x02	/* attr can be changed by user */

struct sysfs_attribute {
	unsigned char *value;
	unsigned short len;		/* value length */
	unsigned short method;		/* show and store */
	unsigned char name[SYSFS_NAME_LEN];
	unsigned char path[SYSFS_PATH_MAX];
};

struct sysfs_link {
	unsigned char name[SYSFS_NAME_LEN];
	unsigned char path[SYSFS_PATH_MAX];
	unsigned char target[SYSFS_PATH_MAX];
};

struct sysfs_directory {
	unsigned char name[SYSFS_NAME_LEN];
	unsigned char path[SYSFS_PATH_MAX];

	/* Private: for internal use only */
	struct dlist *subdirs;	
	struct dlist *links;		
	struct dlist *attributes;
};

struct sysfs_driver {
	unsigned char name[SYSFS_NAME_LEN];
	unsigned char path[SYSFS_PATH_MAX];

	/* Private: for internal use only */
	struct dlist *devices;
	struct sysfs_directory *directory;	
};

struct sysfs_device {
	unsigned char name[SYSFS_NAME_LEN];
	unsigned char bus_id[SYSFS_NAME_LEN];
	unsigned char bus[SYSFS_NAME_LEN];
	unsigned char driver_name[SYSFS_NAME_LEN];
	unsigned char path[SYSFS_PATH_MAX];

	/* Private: for internal use only */
	struct sysfs_device *parent;		
	struct dlist *children;	
	struct sysfs_directory *directory;	
};

struct sysfs_root_device {
	unsigned char name[SYSFS_NAME_LEN];
	unsigned char path[SYSFS_PATH_MAX];

	/* Private: for internal use only */
	struct dlist *devices;
	struct sysfs_directory *directory;
};

struct sysfs_bus {
	unsigned char name[SYSFS_NAME_LEN];
	unsigned char path[SYSFS_PATH_MAX];

	/* Private: for internal use only */
	struct dlist *drivers;
	struct dlist *devices;
	struct sysfs_directory *directory;	
};

struct sysfs_class_device {
	unsigned char name[SYSFS_NAME_LEN];
	unsigned char classname[SYSFS_NAME_LEN];
	unsigned char path[SYSFS_PATH_MAX];

	/* Private: for internal use only */
	struct sysfs_class_device *parent;	
	struct sysfs_device *sysdevice;		/* NULL if virtual */
	struct sysfs_driver *driver;		/* NULL if not implemented */
	struct sysfs_directory *directory;	
};

struct sysfs_class {
	unsigned char name[SYSFS_NAME_LEN];
	unsigned char path[SYSFS_PATH_MAX];

	/* Private: for internal use only */
	struct dlist *devices;
	struct sysfs_directory *directory;	
};

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Function Prototypes
 */
extern int sysfs_get_mnt_path(unsigned char *mnt_path, size_t len);
extern int sysfs_remove_trailing_slash(unsigned char *path);
extern int sysfs_get_name_from_path(const unsigned char *path, 
					unsigned char *name, size_t len);
extern int sysfs_path_is_dir(const unsigned char *path);
extern int sysfs_path_is_link(const unsigned char *path);
extern int sysfs_path_is_file(const unsigned char *path);
extern int sysfs_get_link(const unsigned char *path, unsigned char *target, 
								size_t len);
extern struct dlist *sysfs_open_subsystem_list(unsigned char *name);
extern struct dlist *sysfs_open_bus_devices_list(unsigned char *name);
extern void sysfs_close_list(struct dlist *list);

/* sysfs directory and file access */
extern void sysfs_close_attribute(struct sysfs_attribute *sysattr);
extern struct sysfs_attribute *sysfs_open_attribute(const unsigned char *path);
extern int sysfs_read_attribute(struct sysfs_attribute *sysattr);
extern int sysfs_read_attribute_value(const unsigned char *attrpath, 
				unsigned char *value, size_t vsize);
extern int sysfs_write_attribute(struct sysfs_attribute *sysattr,
		const unsigned char *new_value, size_t len);
extern unsigned char *sysfs_get_value_from_attributes(struct dlist *attr, 
						const unsigned char * name);
extern int sysfs_refresh_dir_attributes(struct sysfs_directory *sysdir);
extern int sysfs_refresh_dir_links(struct sysfs_directory *sysdir);
extern int sysfs_refresh_dir_subdirs(struct sysfs_directory *sysdir);
extern void sysfs_close_directory(struct sysfs_directory *sysdir);
extern struct sysfs_directory *sysfs_open_directory(const unsigned char *path);
extern int sysfs_read_dir_attributes(struct sysfs_directory *sysdir);
extern int sysfs_read_dir_links(struct sysfs_directory *sysdir);
extern int sysfs_read_dir_subdirs(struct sysfs_directory *sysdir);
extern int sysfs_read_directory(struct sysfs_directory *sysdir);
extern int sysfs_read_all_subdirs(struct sysfs_directory *sysdir);
extern struct sysfs_directory *sysfs_get_subdirectory
			(struct sysfs_directory *dir, unsigned char *subname);
extern void sysfs_close_link(struct sysfs_link *ln);
extern struct sysfs_link *sysfs_open_link(const unsigned char *lnpath);
extern struct sysfs_link *sysfs_get_directory_link(struct sysfs_directory *dir,
						unsigned char *linkname);
extern struct sysfs_link *sysfs_get_subdirectory_link
			(struct sysfs_directory *dir, unsigned char *linkname);
extern struct sysfs_attribute *sysfs_get_directory_attribute
			(struct sysfs_directory *dir, unsigned char *attrname);
extern struct dlist *sysfs_get_dir_attributes(struct sysfs_directory *dir);
extern struct dlist *sysfs_get_dir_links(struct sysfs_directory *dir);
extern struct dlist *sysfs_get_dir_subdirs(struct sysfs_directory *dir);

/* sysfs driver access */
extern void sysfs_close_driver(struct sysfs_driver *driver);
extern struct sysfs_driver *sysfs_open_driver
	(const unsigned char *drv_name, const unsigned char *bus_name);
extern struct sysfs_driver *sysfs_open_driver_path(const unsigned char *path);
extern struct sysfs_attribute *sysfs_get_driver_attr
		(struct sysfs_driver *drv, const unsigned char *name);
extern struct dlist *sysfs_get_driver_attributes(struct sysfs_driver *driver);
extern struct dlist *sysfs_get_driver_devices(struct sysfs_driver *driver);
extern struct dlist *sysfs_refresh_driver_devices(struct sysfs_driver *driver);
extern struct dlist *sysfs_get_driver_links(struct sysfs_driver *driver);
extern struct sysfs_device *sysfs_get_driver_device
	(struct sysfs_driver *driver, const unsigned char *name);
extern struct dlist *sysfs_refresh_driver_attributes
			(struct sysfs_driver *driver);
extern struct sysfs_attribute *sysfs_open_driver_attr(const unsigned char *bus, 
		const unsigned char *drv, const unsigned char *attrib);

/* generic sysfs device access */
extern void sysfs_close_root_device(struct sysfs_root_device *root);
extern struct sysfs_root_device *sysfs_open_root_device
						(const unsigned char *name);
extern struct dlist *sysfs_get_root_devices(struct sysfs_root_device *root);
extern void sysfs_close_device(struct sysfs_device *dev);
extern struct sysfs_device *sysfs_open_device
		(const unsigned char *bus_id, const unsigned char *bus);
extern struct sysfs_device *sysfs_get_device_parent(struct sysfs_device *dev);
extern struct sysfs_device *sysfs_open_device_path(const unsigned char *path);
extern int sysfs_get_device_bus(struct sysfs_device *dev);
extern struct sysfs_attribute *sysfs_get_device_attr
			(struct sysfs_device *dev, const unsigned char *name);
extern struct dlist *sysfs_get_device_attributes(struct sysfs_device *device);
extern struct dlist *sysfs_refresh_device_attributes
			(struct sysfs_device *device);
extern struct sysfs_attribute *sysfs_open_device_attr(const unsigned char *bus, 
		const unsigned char *bus_id, const unsigned char *attrib);

/* generic sysfs bus access */
extern void sysfs_close_bus(struct sysfs_bus *bus);
extern struct sysfs_bus *sysfs_open_bus(const unsigned char *name);
extern struct sysfs_device *sysfs_get_bus_device(struct sysfs_bus *bus,
						unsigned char *id);
extern struct sysfs_driver *sysfs_get_bus_driver(struct sysfs_bus *bus,
						unsigned char *drvname);
extern struct dlist *sysfs_get_bus_drivers(struct sysfs_bus *bus);
extern struct dlist *sysfs_get_bus_devices(struct sysfs_bus *bus);
extern struct dlist *sysfs_get_bus_attributes(struct sysfs_bus *bus);
extern struct dlist *sysfs_refresh_bus_attributes(struct sysfs_bus *bus);
extern struct sysfs_attribute *sysfs_get_bus_attribute(struct sysfs_bus *bus,
						unsigned char *attrname);
extern struct sysfs_device *sysfs_open_bus_device(unsigned char *busname, 
							unsigned char *dev_id);
extern int sysfs_find_driver_bus(const unsigned char *driver, 
					unsigned char *busname,	size_t bsize);

/* generic sysfs class access */
extern void sysfs_close_class_device(struct sysfs_class_device *dev);
extern struct sysfs_class_device *sysfs_open_class_device_path
					(const unsigned char *path);
extern struct sysfs_class_device *sysfs_open_class_device
	(const unsigned char *class, const unsigned char *name);
extern struct sysfs_device *sysfs_get_classdev_device
				(struct sysfs_class_device *clsdev);
extern struct sysfs_driver *sysfs_get_classdev_driver
				(struct sysfs_class_device *clsdev);
extern struct sysfs_class_device *sysfs_get_classdev_parent
				(struct sysfs_class_device *clsdev);
extern void sysfs_close_class(struct sysfs_class *cls);
extern struct sysfs_class *sysfs_open_class(const unsigned char *name);
extern struct dlist *sysfs_get_class_devices(struct sysfs_class *cls);
extern struct sysfs_class_device *sysfs_get_class_device
	(struct sysfs_class *class, unsigned char *name);
extern struct dlist *sysfs_get_classdev_attributes
	(struct sysfs_class_device *cdev);
extern struct dlist *sysfs_refresh_classdev_attributes
	(struct sysfs_class_device *cdev);
extern struct sysfs_attribute *sysfs_get_classdev_attr
	(struct sysfs_class_device *clsdev, const unsigned char *name);
extern struct sysfs_attribute *sysfs_open_classdev_attr
	(const unsigned char *classname, const unsigned char *dev, 
	 					const unsigned char *attrib); 

#ifdef __cplusplus
}
#endif

#endif /* _LIBSYSFS_H_ */
Commit	Line	Data
070f5422 GKH	1	/*
	2	* libsysfs.h
	3	*
	4	* Header Definitions for libsysfs
	5	*
fe3fe3b2	6	* Copyright (C) IBM Corp. 2003
070f5422 GKH	7	*
	8	* This library is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU Lesser General Public
	10	* License as published by the Free Software Foundation; either
	11	* version 2.1 of the License, or (at your option) any later version.
	12	*
	13	* This library is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* Lesser General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU Lesser General Public
	19	* License along with this library; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	*/
	23	#ifndef _LIBSYSFS_H_
	24	#define _LIBSYSFS_H_
	25
	26	#include <sys/types.h>
fe3fe3b2	27	#include "dlist.h"
070f5422 GKH	28
	29	/*
	30	* Generic #defines go here..
	31	*/
	32	#define SYSFS_FSTYPE_NAME "sysfs"
	33	#define SYSFS_PROC_MNTS "/proc/mounts"
ff44a6b0	34	#define SYSFS_BUS_NAME "bus"
ff44a6b0	35	#define SYSFS_CLASS_NAME "class"
ff44a6b0	36	#define SYSFS_BLOCK_NAME "block"
070f5422	37	#define SYSFS_DEVICES_NAME "devices"
070f5422 GKH	38	#define SYSFS_DRIVERS_NAME "drivers"
070f5422 GKH	39	#define SYSFS_NAME_ATTRIBUTE "name"
fe3fe3b2	40	#define SYSFS_UNKNOWN "unknown"
8d817251	41	#define SYSFS_PATH_ENV "SYSFS_PATH"
fe3fe3b2	42
070f5422 GKH	43	#define SYSFS_PATH_MAX 255
	44	#define SYSFS_NAME_LEN 50
	45	#define SYSFS_BUS_ID_SIZE 20
	46
	47	#define SYSFS_METHOD_SHOW 0x01 /* attr can be read by user */
	48	#define SYSFS_METHOD_STORE 0x02 /* attr can be changed by user */
	49
	50	struct sysfs_attribute {
fe3fe3b2	51	unsigned char *value;
070f5422 GKH	52	unsigned short len; /* value length */
070f5422 GKH	53	unsigned short method; /* show and store */
fe3fe3b2 DS	54	unsigned char name[SYSFS_NAME_LEN];
fe3fe3b2 DS	55	unsigned char path[SYSFS_PATH_MAX];
070f5422 GKH	56	};
070f5422 GKH	57
fe3fe3b2 DS	58	struct sysfs_link {
	59	unsigned char name[SYSFS_NAME_LEN];
	60	unsigned char path[SYSFS_PATH_MAX];
	61	unsigned char target[SYSFS_PATH_MAX];
070f5422 GKH	62	};
	63
	64	struct sysfs_directory {
616a7078 AM	65	unsigned char name[SYSFS_NAME_LEN];
	66	unsigned char path[SYSFS_PATH_MAX];
	67
	68	/* Private: for internal use only */
fe3fe3b2 DS	69	struct dlist *subdirs;
	70	struct dlist *links;
	71	struct dlist *attributes;
070f5422 GKH	72	};
	73
	74	struct sysfs_driver {
fe3fe3b2 DS	75	unsigned char name[SYSFS_NAME_LEN];
	76	unsigned char path[SYSFS_PATH_MAX];
	77
616a7078	78	/* Private: for internal use only */
5d4754f1	79	struct dlist *devices;
fe3fe3b2	80	struct sysfs_directory *directory;
070f5422 GKH	81	};
	82
	83	struct sysfs_device {
fe3fe3b2 DS	84	unsigned char name[SYSFS_NAME_LEN];
fe3fe3b2 DS	85	unsigned char bus_id[SYSFS_NAME_LEN];
ff44a6b0	86	unsigned char bus[SYSFS_NAME_LEN];
fe3fe3b2	87	unsigned char driver_name[SYSFS_NAME_LEN];
ff44a6b0	88	unsigned char path[SYSFS_PATH_MAX];
fe3fe3b2	89
616a7078	90	/* Private: for internal use only */
5d4754f1 DS	91	struct sysfs_device *parent;
5d4754f1 DS	92	struct dlist *children;
fe3fe3b2 DS	93	struct sysfs_directory *directory;
	94	};
	95
	96	struct sysfs_root_device {
fe3fe3b2 DS	97	unsigned char name[SYSFS_NAME_LEN];
	98	unsigned char path[SYSFS_PATH_MAX];
	99
616a7078	100	/* Private: for internal use only */
5d4754f1	101	struct dlist *devices;
070f5422	102	struct sysfs_directory *directory;
070f5422 GKH	103	};
	104
	105	struct sysfs_bus {
fe3fe3b2 DS	106	unsigned char name[SYSFS_NAME_LEN];
	107	unsigned char path[SYSFS_PATH_MAX];
	108
616a7078	109	/* Private: for internal use only */
5d4754f1 DS	110	struct dlist *drivers;
5d4754f1 DS	111	struct dlist *devices;
fe3fe3b2	112	struct sysfs_directory *directory;
070f5422 GKH	113	};
	114
	115	struct sysfs_class_device {
fe3fe3b2	116	unsigned char name[SYSFS_NAME_LEN];
ff44a6b0	117	unsigned char classname[SYSFS_NAME_LEN];
fe3fe3b2 DS	118	unsigned char path[SYSFS_PATH_MAX];
fe3fe3b2 DS	119
616a7078	120	/* Private: for internal use only */
5d4754f1 DS	121	struct sysfs_class_device *parent;
	122	struct sysfs_device sysdevice; / NULL if virtual */
	123	struct sysfs_driver driver; / NULL if not implemented */
fe3fe3b2	124	struct sysfs_directory *directory;
070f5422 GKH	125	};
	126
	127	struct sysfs_class {
fe3fe3b2 DS	128	unsigned char name[SYSFS_NAME_LEN];
	129	unsigned char path[SYSFS_PATH_MAX];
	130
616a7078	131	/* Private: for internal use only */
5d4754f1	132	struct dlist *devices;
fe3fe3b2	133	struct sysfs_directory *directory;
070f5422 GKH	134	};
	135
	136	#ifdef __cplusplus
	137	extern "C" {
	138	#endif
	139
	140	/*
	141	* Function Prototypes
	142	*/
fe3fe3b2	143	extern int sysfs_get_mnt_path(unsigned char *mnt_path, size_t len);
616a7078	144	extern int sysfs_remove_trailing_slash(unsigned char *path);
fe3fe3b2 DS	145	extern int sysfs_get_name_from_path(const unsigned char *path,
fe3fe3b2 DS	146	unsigned char *name, size_t len);
5d4754f1 DS	147	extern int sysfs_path_is_dir(const unsigned char *path);
	148	extern int sysfs_path_is_link(const unsigned char *path);
	149	extern int sysfs_path_is_file(const unsigned char *path);
fe3fe3b2 DS	150	extern int sysfs_get_link(const unsigned char path, unsigned char target,
	151	size_t len);
	152	extern struct dlist sysfs_open_subsystem_list(unsigned char name);
	153	extern struct dlist sysfs_open_bus_devices_list(unsigned char name);
	154	extern void sysfs_close_list(struct dlist *list);
070f5422 GKH	155
	156	/* sysfs directory and file access */
	157	extern void sysfs_close_attribute(struct sysfs_attribute *sysattr);
fe3fe3b2	158	extern struct sysfs_attribute sysfs_open_attribute(const unsigned char path);
070f5422	159	extern int sysfs_read_attribute(struct sysfs_attribute *sysattr);
fe3fe3b2 DS	160	extern int sysfs_read_attribute_value(const unsigned char *attrpath,
	161	unsigned char *value, size_t vsize);
	162	extern int sysfs_write_attribute(struct sysfs_attribute *sysattr,
	163	const unsigned char *new_value, size_t len);
	164	extern unsigned char sysfs_get_value_from_attributes(struct dlist attr,
	165	const unsigned char * name);
616a7078 AM	166	extern int sysfs_refresh_dir_attributes(struct sysfs_directory *sysdir);
	167	extern int sysfs_refresh_dir_links(struct sysfs_directory *sysdir);
	168	extern int sysfs_refresh_dir_subdirs(struct sysfs_directory *sysdir);
070f5422	169	extern void sysfs_close_directory(struct sysfs_directory *sysdir);
fe3fe3b2	170	extern struct sysfs_directory sysfs_open_directory(const unsigned char path);
5d4754f1 DS	171	extern int sysfs_read_dir_attributes(struct sysfs_directory *sysdir);
	172	extern int sysfs_read_dir_links(struct sysfs_directory *sysdir);
	173	extern int sysfs_read_dir_subdirs(struct sysfs_directory *sysdir);
070f5422	174	extern int sysfs_read_directory(struct sysfs_directory *sysdir);
fe3fe3b2 DS	175	extern int sysfs_read_all_subdirs(struct sysfs_directory *sysdir);
	176	extern struct sysfs_directory *sysfs_get_subdirectory
	177	(struct sysfs_directory dir, unsigned char subname);
	178	extern void sysfs_close_link(struct sysfs_link *ln);
	179	extern struct sysfs_link sysfs_open_link(const unsigned char lnpath);
	180	extern struct sysfs_link sysfs_get_directory_link(struct sysfs_directory dir,
	181	unsigned char *linkname);
	182	extern struct sysfs_link *sysfs_get_subdirectory_link
	183	(struct sysfs_directory dir, unsigned char linkname);
	184	extern struct sysfs_attribute *sysfs_get_directory_attribute
	185	(struct sysfs_directory dir, unsigned char attrname);
616a7078 AM	186	extern struct dlist sysfs_get_dir_attributes(struct sysfs_directory dir);
	187	extern struct dlist sysfs_get_dir_links(struct sysfs_directory dir);
	188	extern struct dlist sysfs_get_dir_subdirs(struct sysfs_directory dir);
070f5422 GKH	189
	190	/* sysfs driver access */
	191	extern void sysfs_close_driver(struct sysfs_driver *driver);
bcbe2d8e DS	192	extern struct sysfs_driver *sysfs_open_driver
	193	(const unsigned char drv_name, const unsigned char bus_name);
	194	extern struct sysfs_driver sysfs_open_driver_path(const unsigned char path);
fe3fe3b2 DS	195	extern struct sysfs_attribute *sysfs_get_driver_attr
	196	(struct sysfs_driver drv, const unsigned char name);
	197	extern struct dlist sysfs_get_driver_attributes(struct sysfs_driver driver);
5d4754f1	198	extern struct dlist sysfs_get_driver_devices(struct sysfs_driver driver);
616a7078	199	extern struct dlist sysfs_refresh_driver_devices(struct sysfs_driver driver);
fe3fe3b2	200	extern struct dlist sysfs_get_driver_links(struct sysfs_driver driver);
5d4754f1 DS	201	extern struct sysfs_device *sysfs_get_driver_device
5d4754f1 DS	202	(struct sysfs_driver driver, const unsigned char name);
616a7078 AM	203	extern struct dlist *sysfs_refresh_driver_attributes
616a7078 AM	204	(struct sysfs_driver *driver);
ff44a6b0 DS	205	extern struct sysfs_attribute sysfs_open_driver_attr(const unsigned char bus,
ff44a6b0 DS	206	const unsigned char drv, const unsigned char attrib);
070f5422 GKH	207
070f5422 GKH	208	/* generic sysfs device access */
fe3fe3b2 DS	209	extern void sysfs_close_root_device(struct sysfs_root_device *root);
	210	extern struct sysfs_root_device *sysfs_open_root_device
	211	(const unsigned char *name);
5d4754f1	212	extern struct dlist sysfs_get_root_devices(struct sysfs_root_device root);
070f5422	213	extern void sysfs_close_device(struct sysfs_device *dev);
bcbe2d8e DS	214	extern struct sysfs_device *sysfs_open_device
	215	(const unsigned char bus_id, const unsigned char bus);
	216	extern struct sysfs_device sysfs_get_device_parent(struct sysfs_device dev);
	217	extern struct sysfs_device sysfs_open_device_path(const unsigned char path);
616a7078	218	extern int sysfs_get_device_bus(struct sysfs_device *dev);
070f5422	219	extern struct sysfs_attribute *sysfs_get_device_attr
fe3fe3b2 DS	220	(struct sysfs_device dev, const unsigned char name);
fe3fe3b2 DS	221	extern struct dlist sysfs_get_device_attributes(struct sysfs_device device);
616a7078 AM	222	extern struct dlist *sysfs_refresh_device_attributes
616a7078 AM	223	(struct sysfs_device *device);
ff44a6b0 DS	224	extern struct sysfs_attribute sysfs_open_device_attr(const unsigned char bus,
ff44a6b0 DS	225	const unsigned char bus_id, const unsigned char attrib);
070f5422 GKH	226
	227	/* generic sysfs bus access */
	228	extern void sysfs_close_bus(struct sysfs_bus *bus);
fe3fe3b2 DS	229	extern struct sysfs_bus sysfs_open_bus(const unsigned char name);
	230	extern struct sysfs_device sysfs_get_bus_device(struct sysfs_bus bus,
	231	unsigned char *id);
	232	extern struct sysfs_driver sysfs_get_bus_driver(struct sysfs_bus bus,
	233	unsigned char *drvname);
5d4754f1 DS	234	extern struct dlist sysfs_get_bus_drivers(struct sysfs_bus bus);
5d4754f1 DS	235	extern struct dlist sysfs_get_bus_devices(struct sysfs_bus bus);
fe3fe3b2	236	extern struct dlist sysfs_get_bus_attributes(struct sysfs_bus bus);
616a7078	237	extern struct dlist sysfs_refresh_bus_attributes(struct sysfs_bus bus);
fe3fe3b2 DS	238	extern struct sysfs_attribute sysfs_get_bus_attribute(struct sysfs_bus bus,
	239	unsigned char *attrname);
	240	extern struct sysfs_device sysfs_open_bus_device(unsigned char busname,
	241	unsigned char *dev_id);
fe3fe3b2 DS	242	extern int sysfs_find_driver_bus(const unsigned char *driver,
fe3fe3b2 DS	243	unsigned char *busname, size_t bsize);
070f5422 GKH	244
	245	/* generic sysfs class access */
	246	extern void sysfs_close_class_device(struct sysfs_class_device *dev);
bcbe2d8e	247	extern struct sysfs_class_device *sysfs_open_class_device_path
fe3fe3b2	248	(const unsigned char *path);
bcbe2d8e DS	249	extern struct sysfs_class_device *sysfs_open_class_device
bcbe2d8e DS	250	(const unsigned char class, const unsigned char name);
5d4754f1 DS	251	extern struct sysfs_device *sysfs_get_classdev_device
	252	(struct sysfs_class_device *clsdev);
	253	extern struct sysfs_driver *sysfs_get_classdev_driver
	254	(struct sysfs_class_device *clsdev);
	255	extern struct sysfs_class_device *sysfs_get_classdev_parent
	256	(struct sysfs_class_device *clsdev);
070f5422	257	extern void sysfs_close_class(struct sysfs_class *cls);
fe3fe3b2	258	extern struct sysfs_class sysfs_open_class(const unsigned char name);
5d4754f1	259	extern struct dlist sysfs_get_class_devices(struct sysfs_class cls);
fe3fe3b2 DS	260	extern struct sysfs_class_device *sysfs_get_class_device
fe3fe3b2 DS	261	(struct sysfs_class class, unsigned char name);
fe3fe3b2 DS	262	extern struct dlist *sysfs_get_classdev_attributes
fe3fe3b2 DS	263	(struct sysfs_class_device *cdev);
616a7078 AM	264	extern struct dlist *sysfs_refresh_classdev_attributes
616a7078 AM	265	(struct sysfs_class_device *cdev);
fe3fe3b2 DS	266	extern struct sysfs_attribute *sysfs_get_classdev_attr
fe3fe3b2 DS	267	(struct sysfs_class_device clsdev, const unsigned char name);
ff44a6b0 DS	268	extern struct sysfs_attribute *sysfs_open_classdev_attr
	269	(const unsigned char classname, const unsigned char dev,
	270	const unsigned char *attrib);
070f5422 GKH	271
	272	#ifdef __cplusplus
	273	}
	274	#endif
	275
	276	#endif /* _LIBSYSFS_H_ */