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Diffstat (limited to 'include/libsysfs.h')
| -rw-r--r-- | include/libsysfs.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/include/libsysfs.h b/include/libsysfs.h new file mode 100644 index 0000000..06c5f3a --- /dev/null +++ b/include/libsysfs.h @@ -0,0 +1,161 @@ +/* + * libsysfs.h + * + * Header Definitions for libsysfs + * + * Copyright (C) 2003 International Business Machines, Inc. + * + * 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> + +/* + * Generic #defines go here.. + */ +#define SYSFS_FSTYPE_NAME "sysfs" +#define SYSFS_PROC_MNTS "/proc/mounts" +#define SYSFS_BUS_DIR "/bus" +#define SYSFS_CLASS_DIR "/class" +#define SYSFS_DEVICES_DIR "/devices" +#define SYSFS_DEVICES_NAME "devices" +#define SYSFS_DRIVERS_DIR "/drivers" +#define SYSFS_DRIVERS_NAME "drivers" +#define SYSFS_NAME_ATTRIBUTE "name" + +#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 { + struct sysfs_attribute *next; + char path[SYSFS_PATH_MAX]; + char *value; + unsigned short len; /* value length */ + unsigned short method; /* show and store */ +}; + +struct sysfs_link { + struct sysfs_link *next; + char name[SYSFS_NAME_LEN]; + char target[SYSFS_PATH_MAX]; +}; + +struct sysfs_directory { + struct sysfs_directory *next; + char path[SYSFS_PATH_MAX]; + struct sysfs_directory *subdirs; + struct sysfs_link *links; + struct sysfs_attribute *attributes; +}; + +struct sysfs_driver { + struct sysfs_driver *next; + char name[SYSFS_NAME_LEN]; + struct sysfs_directory *directory; + struct sysfs_device *device; +}; + +struct sysfs_device { + struct sysfs_device *next; + char name[SYSFS_NAME_LEN]; + char bus_id[SYSFS_NAME_LEN]; + struct sysfs_driver *driver; + struct sysfs_directory *directory; + struct sysfs_device *parent; + struct sysfs_device *children; +}; + +struct sysfs_bus { + struct sysfs_bus *next; + char name[SYSFS_NAME_LEN]; + struct sysfs_directory *directory; + struct sysfs_driver *drivers; + struct sysfs_device *devices; +}; + +struct sysfs_class_device { + struct sysfs_class_device *next; + char name[SYSFS_NAME_LEN]; + struct sysfs_directory *directory; + struct sysfs_device *sysdevice; /* NULL if virtual */ + struct sysfs_driver *driver; /* NULL if not implemented */ +}; + +struct sysfs_class { + struct sysfs_class *next; + char name[SYSFS_NAME_LEN]; + struct sysfs_directory *directory; + struct sysfs_class_device *devices; +}; + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Function Prototypes + */ +extern int sysfs_get_mnt_path(char *mnt_path, size_t len); +extern int sysfs_get_name_from_path(const char *path, char *name, size_t len); +extern int sysfs_get_link(const char *path, char *target, size_t len); + +/* sysfs directory and file access */ +extern void sysfs_close_attribute(struct sysfs_attribute *sysattr); +extern struct sysfs_attribute *sysfs_open_attribute(const char *path); +extern int sysfs_read_attribute(struct sysfs_attribute *sysattr); +extern int sysfs_read_attribute_value(const char *attrpath, char *value, + size_t vsize); +extern char *sysfs_get_value_from_attributes(struct sysfs_attribute *attr, + const char * name); +extern void sysfs_close_directory(struct sysfs_directory *sysdir); +extern struct sysfs_directory *sysfs_open_directory(const char *path); +extern int sysfs_read_directory(struct sysfs_directory *sysdir); +extern void sysfs_close_link(struct sysfs_link *ln); +extern struct sysfs_link *sysfs_open_link(const char *lnpath); + +/* sysfs driver access */ +extern void sysfs_close_driver(struct sysfs_driver *driver); +extern struct sysfs_driver *sysfs_open_driver(const char *path); + +/* generic sysfs device access */ +extern void sysfs_close_device(struct sysfs_device *dev); +extern void sysfs_close_device_tree(struct sysfs_device *dev); +extern struct sysfs_device *sysfs_open_device(const char *path); +extern struct sysfs_device *sysfs_open_device_tree(const char *path); +extern struct sysfs_attribute *sysfs_get_device_attr + (struct sysfs_device *dev, const char *name); + +/* generic sysfs bus access */ +extern void sysfs_close_bus(struct sysfs_bus *bus); +extern struct sysfs_bus *sysfs_open_bus(const char *name); + +/* generic sysfs class access */ +extern void sysfs_close_class_device(struct sysfs_class_device *dev); +extern struct sysfs_class_device *sysfs_open_class_device(const char *path); +extern void sysfs_close_class(struct sysfs_class *cls); +extern struct sysfs_class *sysfs_open_class(const char *name); + +#ifdef __cplusplus +} +#endif + +#endif /* _LIBSYSFS_H_ */ |