mirror of
https://github.com/systemd/systemd.git
synced 2024-11-06 16:59:03 +03:00
bcbe2d8e7d
Ananth released sysfsutils 0.4.0 last night, I'm sure you saw the email. Here's a patch with the latest changes from the pre-patch I already gave you. It includes sysfs_get_device_parent(), which you said you needed. I've run your test scripts and I've built scsi_id. Please play around with this and check it out. There are quite a few changes. Please do not access structure pointers, like sysfs_device's parent, directly like dev->parent. Please use the "get" function to retrieve. The functions load things on demand and refresh views under the covers.
261 lines
9.8 KiB
C
261 lines
9.8 KiB
C
/*
|
|
* 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 {
|
|
struct dlist *subdirs;
|
|
struct dlist *links;
|
|
struct dlist *attributes;
|
|
unsigned char name[SYSFS_NAME_LEN];
|
|
unsigned char path[SYSFS_PATH_MAX];
|
|
};
|
|
|
|
struct sysfs_driver {
|
|
unsigned char name[SYSFS_NAME_LEN];
|
|
unsigned char path[SYSFS_PATH_MAX];
|
|
|
|
/* 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];
|
|
|
|
/* 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];
|
|
|
|
/* 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];
|
|
|
|
/* 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];
|
|
|
|
/* 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];
|
|
|
|
/* for internal use only */
|
|
struct dlist *devices;
|
|
struct sysfs_directory *directory;
|
|
};
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* Function Prototypes
|
|
*/
|
|
extern int sysfs_trailing_slash(unsigned char *path);
|
|
extern int sysfs_get_mnt_path(unsigned char *mnt_path, size_t len);
|
|
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_attributes(struct dlist *attrlist);
|
|
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);
|
|
|
|
/* 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_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 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 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 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 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 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_ */
|