udev.h revision 17fcfb5972977b6a3aedca6ad2aa8d1fbfbc761d
/*
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (C) 2003-2008 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, either version 2 of the License, or
* (at your option) any later version.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef _UDEV_H_
#define _UDEV_H_
#include "config.h"
#include <sys/types.h>
#include <sys/param.h>
#include "udev_sysdeps.h"
#define LIBUDEV_I_KNOW_THE_API_IS_SUBJECT_TO_CHANGE 1
#include "lib/libudev.h"
#include "lib/libudev-private.h"
#include "lib/list.h"
#define ALLOWED_CHARS "#+-.:=@_"
#define ALLOWED_CHARS_FILE ALLOWED_CHARS "/"
#define ALLOWED_CHARS_INPUT ALLOWED_CHARS_FILE " $%?,"
#define DEFAULT_PARTITIONS_COUNT 15
#define UDEV_EVENT_TIMEOUT 180
/* linux/include/linux/kobject.h */
#define UEVENT_BUFFER_SIZE 2048
#define UEVENT_NUM_ENVP 32
#define UDEV_CTRL_SOCK_PATH "@" UDEV_PREFIX "/org/kernel/udev/udevd"
#define UDEV_MAX(a,b) ((a) > (b) ? (a) : (b))
/* pipes */
#define READ_END 0
#define WRITE_END 1
struct udev_rules;
struct sysfs_device {
struct list_head node; /* for device cache */
struct sysfs_device *parent; /* already cached parent*/
char devpath[UTIL_PATH_SIZE];
char subsystem[UTIL_NAME_SIZE];
char kernel[UTIL_NAME_SIZE]; /* device instance name */
char kernel_number[UTIL_NAME_SIZE];
char driver[UTIL_NAME_SIZE];
};
struct udevice {
struct udev *udev;
/* 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[UTIL_NAME_SIZE];
char *devpath_old;
/* node */
char name[UTIL_PATH_SIZE];
struct list_head symlink_list;
int symlink_final;
char owner[UTIL_NAME_SIZE];
int owner_final;
char group[UTIL_NAME_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[UTIL_PATH_SIZE];
int partitions;
int ignore_device;
int ignore_remove;
char program_result[UTIL_PATH_SIZE];
int link_priority;
int event_timeout;
int test_run;
};
static inline void logging_init(const char *program_name)
{
openlog(program_name, LOG_PID | LOG_CONS, LOG_DAEMON);
}
static inline void logging_msg(struct udev *udev, int priority,
const char *file, int line, const char *fn,
const char *format, va_list args)
{
vsyslog(priority, format, args);
}
static inline void logging_close(void)
{
closelog();
}
/* udev_device.c */
extern struct udevice *udev_device_init(struct udev *udev);
extern void udev_device_cleanup(struct udevice *udevice);
extern dev_t udev_device_get_devt(struct udevice *udevice);
/* udev_device_event.c */
extern int udev_device_event(struct udev_rules *rules, struct udevice *udevice);
/* udev_sysfs.c */
extern int sysfs_init(void);
extern void sysfs_cleanup(void);
extern void sysfs_device_set_values(struct udev *udev,
struct sysfs_device *dev, const char *devpath,
const char *subsystem, const char *driver);
extern struct sysfs_device *sysfs_device_get(struct udev *udev, const char *devpath);
extern struct sysfs_device *sysfs_device_get_parent(struct udev *udev, struct sysfs_device *dev);
extern struct sysfs_device *sysfs_device_get_parent_with_subsystem(struct udev *udev, struct sysfs_device *dev, const char *subsystem);
extern char *sysfs_attr_get_value(struct udev *udev, const char *devpath, const char *attr_name);
extern int sysfs_lookup_devpath_by_subsys_id(struct udev *udev, char *devpath, size_t len, const char *subsystem, const char *id);
/* udev_node.c */
extern int udev_node_mknod(struct udevice *udevice, const char *file, dev_t devt, mode_t mode, uid_t uid, gid_t gid);
extern void udev_node_update_symlinks(struct udevice *udevice, struct udevice *udev_old);
extern int udev_node_add(struct udevice *udevice);
extern int udev_node_remove(struct udevice *udevice);
/* udev_db.c */
extern int udev_db_add_device(struct udevice *udevice);
extern int udev_db_delete_device(struct udevice *udevice);
extern int udev_db_rename(struct udev *udev, const char *devpath_old, const char *devpath);
extern int udev_db_get_device(struct udevice *udevice, const char *devpath);
extern int udev_db_get_devices_by_name(struct udev *udev, const char *name, struct list_head *name_list);
extern int udev_db_get_all_entries(struct udev *udevconst, struct list_head *name_list);
/* udev_utils.c */
struct name_entry {
struct list_head node;
char name[UTIL_PATH_SIZE];
unsigned int ignore_error:1;
};
extern struct name_entry *name_list_add(struct udev *udev, struct list_head *name_list, const char *name, int sort);
extern struct name_entry *name_list_key_add(struct udev *udev, struct list_head *name_list, const char *key, const char *value);
extern int name_list_key_remove(struct udev *udev, struct list_head *name_list, const char *key);
extern void name_list_cleanup(struct udev *udev, struct list_head *name_list);
extern int add_matching_files(struct udev *udev, struct list_head *name_list, const char *dirname, const char *suffix);
extern uid_t lookup_user(struct udev *udev, const char *user);
extern gid_t lookup_group(struct udev *udev, const char *group);
/* udev_utils_file.c */
extern int create_path(struct udev *udev, const char *path);
extern int delete_path(struct udev *udev, const char *path);
extern int unlink_secure(struct udev *udev, const char *filename);
extern int file_map(const char *filename, char **buf, size_t *bufsize);
extern void file_unmap(void *buf, size_t bufsize);
extern size_t buf_get_line(const char *buf, size_t buflen, size_t cur);
/* udevadm commands */
extern int udevadm_monitor(struct udev *udev, int argc, char *argv[]);
extern int udevadm_info(struct udev *udev, int argc, char *argv[]);
extern int udevadm_control(struct udev *udev, int argc, char *argv[]);
extern int udevadm_trigger(struct udev *udev, int argc, char *argv[]);
extern int udevadm_settle(struct udev *udev, int argc, char *argv[]);
extern int udevadm_test(struct udev *udev, int argc, char *argv[]);
#endif