[PATCH] mv libsysfs/libsysfs.h to libsysfs/sysfs/libsysfs.h to make it easier to use.

1 files changed, 276 insertions, 0 deletions

diff --git a/libsysfs/sysfs/libsysfs.h b/libsysfs/sysfs/libsysfs.h
new file mode 100644
index 0000000000..10faab92aa
--- /dev/null
+++ b/libsysfs/sysfs/libsysfs.h
@@ -0,0 +1,276 @@
+/*
+ * 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_ */