*
* Header Definitions for libsysfs
*
- * Copyright (C) IBM Corp. 2003
+ * 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
#include <string.h>
#include "dlist.h"
-/*
- * Defines to prevent buffer overruns
- */
-#define safestrcpy(to, from) strncpy(to, from, sizeof(to)-1)
-#define safestrcat(to, from) strncat(to, from, sizeof(to) - strlen(to)-1)
-
-#define safestrcpymax(to, from, max) \
-do { \
- to[max-1] = '\0'; \
- strncpy(to, from, max-1); \
-} while (0)
-
-#define safestrcatmax(to, from, max) \
-do { \
- to[max-1] = '\0'; \
- strncat(to, from, max - strlen(to)-1); \
-} while (0)
-
-/*
- * Generic #defines go here..
- */
#define SYSFS_FSTYPE_NAME "sysfs"
#define SYSFS_PROC_MNTS "/proc/mounts"
#define SYSFS_BUS_NAME "bus"
#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_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_PATH_MAX 256
+#define SYSFS_NAME_LEN 64
+#define SYSFS_BUS_ID_SIZE 32
-#define SYSFS_METHOD_SHOW 0x01 /* attr can be read by user */
-#define SYSFS_METHOD_STORE 0x02 /* attr can be changed by user */
+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: statically define mnt path for sysfs */
+#define SYSFS_MNT_PATH "/sys"
/*
- * NOTE: We have the statically allocated "name" as the first element of all
+ * 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 */
- unsigned short method; /* show and store */
-};
-
-struct sysfs_link {
- char name[SYSFS_NAME_LEN];
- char path[SYSFS_PATH_MAX];
- char target[SYSFS_PATH_MAX];
-};
-
-struct sysfs_directory {
- char name[SYSFS_NAME_LEN];
- char path[SYSFS_PATH_MAX];
-
- /* Private: for internal use only */
- struct dlist *subdirs;
- struct dlist *links;
- struct dlist *attributes;
+ 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 dlist *devices;
- struct sysfs_directory *directory;
};
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 path[SYSFS_PATH_MAX];
/* Private: for internal use only */
struct sysfs_device *parent;
+ /* NOTE - we still don't populate this */
struct dlist *children;
- struct sysfs_directory *directory;
-};
-
-struct sysfs_root_device {
- char name[SYSFS_NAME_LEN];
- char path[SYSFS_PATH_MAX];
-
- /* Private: for internal use only */
- struct dlist *devices;
- struct sysfs_directory *directory;
};
+/* NOTE: not used as of now */
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_directory *directory;
};
struct sysfs_class_device {
char name[SYSFS_NAME_LEN];
- char classname[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_driver *driver; /* NULL if not implemented */
- struct sysfs_directory *directory;
};
+/* NOTE: not used as of now */
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_directory *directory;
};
#ifdef __cplusplus
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_subsystem_list(char *name);
-extern struct dlist *sysfs_open_bus_devices_list(char *name);
+extern struct dlist *sysfs_open_directory_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_read_attribute_value(const char *attrpath,
- char *value, size_t vsize);
extern int sysfs_write_attribute(struct sysfs_attribute *sysattr,
const char *new_value, size_t len);
-extern char *sysfs_get_value_from_attributes(struct dlist *attr,
- const 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 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, char *subname);
-extern void sysfs_close_link(struct sysfs_link *ln);
-extern struct sysfs_link *sysfs_open_link(const char *lnpath);
-extern struct sysfs_link *sysfs_get_directory_link
- (struct sysfs_directory *dir, char *linkname);
-extern struct sysfs_link *sysfs_get_subdirectory_link
- (struct sysfs_directory *dir, char *linkname);
-extern struct sysfs_attribute *sysfs_get_directory_attribute
- (struct sysfs_directory *dir, 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);
(struct sysfs_driver *drv, const 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 char *name);
-extern struct dlist *sysfs_refresh_driver_attributes
- (struct sysfs_driver *driver);
-extern struct sysfs_attribute *sysfs_open_driver_attr
- (const char *bus, const char *drv, const 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 char *name);
-extern struct dlist *sysfs_get_root_devices(struct sysfs_root_device *root);
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 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 *device);
-extern struct dlist *sysfs_refresh_device_attributes
- (struct sysfs_device *device);
-extern struct sysfs_attribute *sysfs_open_device_attr(const char *bus,
- const char *bus_id, const char *attrib);
-
-/* 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 sysfs_device *sysfs_get_bus_device(struct sysfs_bus *bus,
- char *id);
-extern struct sysfs_driver *sysfs_get_bus_driver(struct sysfs_bus *bus,
- 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, char *attrname);
-extern int sysfs_find_driver_bus(const char *driver, char *busname,
- size_t bsize);
+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);
(const char *path);
extern struct sysfs_class_device *sysfs_open_class_device
(const char *classname, const 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 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 *cls, 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 char *name);
-extern struct sysfs_attribute *sysfs_open_classdev_attr
- (const char *classname, const char *dev,
- const char *attrib);
+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);
/**
* sort_list: sorter function to keep list elements sorted in alphabetical
~ianmdlvl / elogind.git / blobdiff