Fully integrate libsysfs into NetNuke (it compiles and links correctly)

1 files changed, 251 insertions, 0 deletions

diff --git a/include/libsysfs.h b/include/libsysfs.h
new file mode 100644
index 0000000..f1e8436
--- /dev/null
+++ b/include/libsysfs.h
@@ -0,0 +1,251 @@
+/*
+ * libsysfs.h
+ *
+ * Header Definitions for libsysfs
+ *
+ * Copyright (C) IBM Corp. 2004-2005
+ *
+ *  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 <string.h>
+#include "dlist.h"
+
+#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_MODULE_NAME	"module"
+#define SYSFS_NAME_ATTRIBUTE	"name"
+#define SYSFS_MOD_PARM_NAME	"parameters"
+#define SYSFS_MOD_SECT_NAME	"sections"
+#define SYSFS_UNKNOWN		"unknown"
+#define SYSFS_PATH_ENV		"SYSFS_PATH"
+
+#define SYSFS_PATH_MAX		256
+#define	SYSFS_NAME_LEN		64
+#define SYSFS_BUS_ID_SIZE	32
+
+/* mount path for sysfs, can be overridden by exporting SYSFS_PATH */
+#define SYSFS_MNT_PATH		"/sys"
+
+enum sysfs_attribute_method {
+	SYSFS_METHOD_SHOW =	0x01,	/* attr can be read by user */
+	SYSFS_METHOD_STORE =	0x02,	/* attr can be changed by user */
+};
+
+/*
+ * NOTE:
+ * 1. We have the statically allocated "name" as the first element of all
+ * the structures. This feature is used in the "sorter" function for dlists
+ * 2. As is the case with attrlist
+ * 3. As is the case with path
+ */
+struct sysfs_attribute {
+	char name[SYSFS_NAME_LEN];
+	char path[SYSFS_PATH_MAX];
+	char *value;
+	unsigned short len;			/* value length */
+	enum sysfs_attribute_method method;	/* show and store */
+};
+
+struct sysfs_driver {
+	char name[SYSFS_NAME_LEN];
+	char path[SYSFS_PATH_MAX];
+	struct dlist *attrlist;
+	char bus[SYSFS_NAME_LEN];
+
+	/* Private: for internal use only */
+	struct sysfs_module *module;
+	struct dlist *devices;
+};
+
+struct sysfs_device {
+	char name[SYSFS_NAME_LEN];
+	char path[SYSFS_PATH_MAX];
+	struct dlist *attrlist;
+	char bus_id[SYSFS_NAME_LEN];
+	char bus[SYSFS_NAME_LEN];
+	char driver_name[SYSFS_NAME_LEN];
+	char subsystem[SYSFS_NAME_LEN];
+
+	/* Private: for internal use only */
+	struct sysfs_device *parent;
+	/* NOTE - we still don't populate this */
+	struct dlist *children;
+};
+
+struct sysfs_bus {
+	char name[SYSFS_NAME_LEN];
+	char path[SYSFS_PATH_MAX];
+	struct dlist *attrlist;
+
+	/* Private: for internal use only */
+	struct dlist *drivers;
+	struct dlist *devices;
+};
+
+struct sysfs_class_device {
+	char name[SYSFS_NAME_LEN];
+	char path[SYSFS_PATH_MAX];
+	struct dlist *attrlist;
+	char classname[SYSFS_NAME_LEN];
+
+	/* Private: for internal use only */
+	struct sysfs_class_device *parent;
+	struct sysfs_device *sysdevice;		/* NULL if virtual */
+};
+
+struct sysfs_class {
+	char name[SYSFS_NAME_LEN];
+	char path[SYSFS_PATH_MAX];
+	struct dlist *attrlist;
+
+	/* Private: for internal use only */
+	struct dlist *devices;
+};
+
+struct sysfs_module {
+	char name[SYSFS_NAME_LEN];
+	char path[SYSFS_PATH_MAX];
+	struct dlist *attrlist;
+	struct dlist *parmlist;
+	struct dlist *sections;
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Function Prototypes
+ */
+extern int sysfs_get_mnt_path(char *mnt_path, size_t len);
+extern int sysfs_remove_trailing_slash(char *path);
+extern int sysfs_get_name_from_path(const char *path, char *name, size_t len);
+extern int sysfs_path_is_dir(const char *path);
+extern int sysfs_path_is_link(const char *path);
+extern int sysfs_path_is_file(const char *path);
+extern int sysfs_get_link(const char *path, char *target, size_t len);
+extern struct dlist *sysfs_open_directory_list(const char *path);
+extern struct dlist *sysfs_open_link_list(const char *path);
+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 char *path);
+extern int sysfs_read_attribute(struct sysfs_attribute *sysattr);
+extern int sysfs_write_attribute(struct sysfs_attribute *sysattr,
+		const char *new_value, size_t len);
+extern struct sysfs_device *sysfs_read_dir_subdirs(const char *path);
+/* sysfs driver access */
+extern void sysfs_close_driver(struct sysfs_driver *driver);
+extern struct sysfs_driver *sysfs_open_driver
+	(const char *bus_name, const char *drv_name);
+extern struct sysfs_driver *sysfs_open_driver_path(const char *path);
+extern struct sysfs_attribute *sysfs_get_driver_attr
+	(struct sysfs_driver *drv, const char *name);
+extern struct dlist *sysfs_get_driver_attributes(struct sysfs_driver *drv);
+extern struct dlist *sysfs_get_driver_devices(struct sysfs_driver *drv);
+extern struct sysfs_module *sysfs_get_driver_module(struct sysfs_driver *drv);
+
+/* generic sysfs device access */
+extern void sysfs_close_device_tree(struct sysfs_device *device);
+extern struct sysfs_device *sysfs_open_device_tree(const char *path);
+extern void sysfs_close_device(struct sysfs_device *dev);
+extern struct sysfs_device *sysfs_open_device
+	(const char *bus, const char *bus_id);
+extern struct sysfs_device *sysfs_get_device_parent(struct sysfs_device *dev);
+extern struct sysfs_device *sysfs_open_device_path(const 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 char *name);
+extern struct dlist *sysfs_get_device_attributes
+	(struct sysfs_device *dev);
+
+/* 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 char *path);
+extern struct sysfs_class_device *sysfs_open_class_device
+	(const char *classname, const char *name);
+extern struct sysfs_class_device *sysfs_get_classdev_parent
+	(struct sysfs_class_device *clsdev);
+extern struct sysfs_attribute *sysfs_get_classdev_attr
+	(struct sysfs_class_device *clsdev, const char *name);
+extern struct dlist *sysfs_get_classdev_attributes
+	(struct sysfs_class_device *clsdev);
+extern struct sysfs_device *sysfs_get_classdev_device
+	(struct sysfs_class_device *clsdev);
+extern void sysfs_close_class(struct sysfs_class *cls);
+extern struct sysfs_class *sysfs_open_class(const char *name);
+extern struct sysfs_class_device *sysfs_get_class_device
+	(struct sysfs_class *cls, const char *name);
+extern struct dlist *sysfs_get_class_devices(struct sysfs_class *cls);
+
+/* generic sysfs bus access */
+extern void sysfs_close_bus(struct sysfs_bus *bus);
+extern struct sysfs_bus *sysfs_open_bus(const char *name);
+extern struct dlist *sysfs_get_bus_devices(struct sysfs_bus *bus);
+extern struct dlist *sysfs_get_bus_drivers(struct sysfs_bus *bus);
+extern struct sysfs_device *sysfs_get_bus_device
+	(struct sysfs_bus *bus, const char *id);
+extern struct sysfs_driver *sysfs_get_bus_driver
+	(struct sysfs_bus *bus, const char *drvname);
+
+/* generic sysfs module access */
+extern void sysfs_close_module(struct sysfs_module *module);
+extern struct sysfs_module *sysfs_open_module_path(const char *path);
+extern struct sysfs_module *sysfs_open_module(const char *name);
+extern struct dlist *sysfs_get_module_parms(struct sysfs_module *module);
+extern struct dlist *sysfs_get_module_sections(struct sysfs_module *module);
+extern struct dlist *sysfs_get_module_attributes(struct sysfs_module *module);
+extern struct sysfs_attribute *sysfs_get_module_attr
+	(struct sysfs_module *module, const char *name);
+extern struct sysfs_attribute *sysfs_get_module_parm
+	(struct sysfs_module *module, const char *parm);
+extern struct sysfs_attribute *sysfs_get_module_section
+	(struct sysfs_module *module, const char *section);
+
+/**
+ * sort_list: sorter function to keep list elements sorted in alphabetical
+ * 	order. Just does a strncmp as you can see :)
+ *
+ * Returns 1 if less than 0 otherwise
+ *
+ * NOTE: We take care to have a statically allocated "name" as the first
+ * 	lement of all libsysfs structures. Hence, this function will work
+ * 	AS IS for _ALL_ the lists that have to be sorted.
+ */
+static inline int sort_list(void *new_elem, void *old_elem)
+{
+	return ((strncmp(((struct sysfs_attribute *)new_elem)->name,
+		((struct sysfs_attribute *)old_elem)->name,
+		strlen(((struct sysfs_attribute *)new_elem)->name))) < 0 ? 1 : 0);
+}
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LIBSYSFS_H_ */