[PATCH] added libsysfs code from sysutils-0.1.1-071803 release

1 files changed, 162 insertions, 0 deletions

diff --git a/libsysfs/libsysfs.h b/libsysfs/libsysfs.h
new file mode 100644
index 0000000000..01143954e7
--- /dev/null
+++ b/libsysfs/libsysfs.h
@@ -0,0 +1,162 @@
+/*
+ * 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_dlink {
+	struct sysfs_dlink *next;
+	char name[SYSFS_NAME_LEN];
+	struct sysfs_directory *target;
+};
+
+struct sysfs_directory {
+	struct sysfs_directory *next;
+	char path[SYSFS_PATH_MAX];
+	struct sysfs_directory *subdirs;
+	struct sysfs_dlink *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_dlink(struct sysfs_dlink *dlink);
+extern struct sysfs_dlink *sysfs_open_dlink(const char *linkpath);
+extern int sysfs_read_dlinks(struct sysfs_dlink *dlink);
+
+/* 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_ */