udev.h revision ff9a488d8c559a2ee40e522cdc68b750670711e4
/*
* udev.h
*
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (C) 2003-2005 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef _UDEV_H_
#define _UDEV_H_
#include <sys/types.h>
#include <sys/param.h>
#include "list.h"
#include "logging.h"
#include "udev_libc_wrapper.h"
#include "udev_version.h"
#define COMMENT_CHARACTER '#'
#define PATH_TO_NAME_CHAR '@'
#define LINE_SIZE 512
#define NAME_SIZE 128
#define PATH_SIZE 256
#define USER_SIZE 32
#define SEQNUM_SIZE 32
#define VALUE_SIZE 128
#define DEFAULT_PARTITIONS_COUNT 15
#define UDEV_ALARM_TIMEOUT 180
#define UDEV_MAX(a,b) ((a) > (b) ? (a) : (b))
/* pipes */
#define READ_END 0
#define WRITE_END 1
#define DB_DIR ".udev/db"
struct udev_rules;
struct sysfs_device {
struct list_head node; /* for device cache */
struct sysfs_device *parent; /* already cached parent*/
char devpath[PATH_SIZE];
char subsystem[NAME_SIZE]; /* $class/$bus/"drivers" */
char kernel_name[NAME_SIZE]; /* device instance name */
char kernel_number[NAME_SIZE];
char driver[NAME_SIZE]; /* device driver name */
};
struct udevice {
/* device event */
struct sysfs_device *dev; /* points to dev_local by default */
struct sysfs_device dev_local;
struct sysfs_device *dev_parent; /* current parent device used for matching */
char action[NAME_SIZE];
/* node */
char name[PATH_SIZE];
struct list_head symlink_list;
int symlink_final;
char owner[USER_SIZE];
int owner_final;
char group[USER_SIZE];
int group_final;
mode_t mode;
int mode_final;
dev_t devt;
/* event processing */
struct list_head run_list;
int run_final;
struct list_head env_list;
char tmp_node[PATH_SIZE];
int partitions;
int ignore_device;
int ignore_remove;
char program_result[PATH_SIZE];
int test_run;
};
/* udev_config.c */
extern char udev_root[PATH_SIZE];
extern char udev_config_filename[PATH_SIZE];
extern char udev_rules_filename[PATH_SIZE];
extern int udev_log_priority;
extern int udev_run;
extern void udev_config_init(void);
/* udev_device.c */
extern struct udevice *udev_device_init(void);
extern void udev_device_cleanup(struct udevice *udev);
extern int udev_device_event(struct udev_rules *rules, struct udevice *udev);
extern dev_t udev_device_get_devt(struct udevice *udev);
/* udev_sysfs.c */
extern char sysfs_path[PATH_SIZE];
extern int sysfs_init(void);
extern void sysfs_cleanup(void);
extern void sysfs_device_set_values(struct sysfs_device *dev, const char *devpath, const char *subsystem);
extern struct sysfs_device *sysfs_device_get(const char *devpath);
extern struct sysfs_device *sysfs_device_get_parent(struct sysfs_device *dev);
extern struct sysfs_device *sysfs_device_get_parent_with_subsystem(struct sysfs_device *dev, const char *subsystem);
extern char *sysfs_attr_get_value(const char *devpath, const char *attr_name);
/* udev_node.c */
extern int udev_node_mknod(struct udevice *udev, const char *file, dev_t devt, mode_t mode, uid_t uid, gid_t gid);
extern int udev_node_add(struct udevice *udev, struct udevice *udev_old);
extern void udev_node_remove_symlinks(struct udevice *udev);
extern int udev_node_remove(struct udevice *udev);
/* udev_db.c */
extern int udev_db_add_device(struct udevice *dev);
extern int udev_db_delete_device(struct udevice *dev);
extern int udev_db_get_device(struct udevice *udev, const char *devpath);
extern int udev_db_lookup_name(const char *name, char *devpath, size_t len);
extern int udev_db_get_all_entries(struct list_head *name_list);
/* udev_utils.c */
struct name_entry {
struct list_head node;
char name[PATH_SIZE];
};
extern int log_priority(const char *priority);
extern int name_list_add(struct list_head *name_list, const char *name, int sort);
extern int name_list_key_add(struct list_head *name_list, const char *key, const char *value);
extern void name_list_cleanup(struct list_head *name_list);
extern int add_matching_files(struct list_head *name_list, const char *dirname, const char *suffix);
/* udev_utils_string.c */
extern int strcmp_pattern(const char *p, const char *s);
extern int string_is_true(const char *str);
extern void remove_trailing_chars(char *path, char c);
extern int utf8_encoded_valid_unichar(const char *str);
extern int replace_untrusted_chars(char *str);
/* udev_utils_file.c */
extern int create_path(const char *path);
extern int delete_path(const char *path);
extern int file_map(const char *filename, char **buf, size_t *bufsize);
extern void file_unmap(void *buf, size_t bufsize);
extern int unlink_secure(const char *filename);
extern size_t buf_get_line(const char *buf, size_t buflen, size_t cur);
/* udev_utils_run.c */
extern int pass_env_to_socket(const char *name, const char *devpath, const char *action);
extern int run_program(const char *command, const char *subsystem,
char *result, size_t ressize, size_t *reslen, int log);
#endif