udev.h revision 44aff4cd6d74d230e4a97f8d59f780472b7cad6e
/*
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (C) 2003-2006 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef _UDEV_H_
#define _UDEV_H_
#include <sys/types.h>
#include <sys/param.h>
#include "list.h"
#include "logging.h"
#include "udev_sysdeps.h"
#define COMMENT_CHARACTER '#'
#define LINE_SIZE 512
#define PATH_SIZE 512
#define NAME_SIZE 256
#define VALUE_SIZE 128
#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
#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[PATH_SIZE];
char subsystem[NAME_SIZE]; /* $class, $bus, drivers, module */
char kernel[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];
char *devpath_old;
/* node */
char name[PATH_SIZE];
struct list_head symlink_list;
int symlink_final;
char owner[NAME_SIZE];
int owner_final;
char group[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[PATH_SIZE];
int partitions;
int ignore_device;
int ignore_remove;
char program_result[PATH_SIZE];
int link_priority;
int event_timeout;
int test_run;
};
/* udev_config.c */
extern char udev_root[PATH_SIZE];
extern char udev_config_filename[PATH_SIZE];
extern char udev_rules_dir[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 dev_t udev_device_get_devt(struct udevice *udev);
/* udev_device_event.c */
extern int udev_device_event(struct udev_rules *rules, 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, const char *driver);
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);
extern int sysfs_resolve_link(char *path, size_t size);
extern int sysfs_lookup_devpath_by_subsys_id(char *devpath, size_t len, const char *subsystem, const char *id);
/* 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 void udev_node_update_symlinks(struct udevice *udev, struct udevice *udev_old);
extern int udev_node_add(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_rename(const char *devpath_old, const char *devpath);
extern int udev_db_get_device(struct udevice *udev, const char *devpath);
extern int udev_db_get_devices_by_name(const char *name, struct list_head *name_list);
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];
unsigned int ignore_error:1;
};
extern int log_priority(const char *priority);
extern struct name_entry *name_list_add(struct list_head *name_list, const char *name, int sort);
extern struct name_entry *name_list_key_add(struct list_head *name_list, const char *key, const char *value);
extern int name_list_key_remove(struct list_head *name_list, const char *key);
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);
extern uid_t lookup_user(const char *user);
extern gid_t lookup_group(const char *group);
/* udev_utils_string.c */
extern int string_is_true(const char *str);
extern void remove_trailing_chars(char *path, char c);
extern size_t path_encode(char *s, size_t len);
extern size_t path_decode(char *s);
extern int utf8_encoded_valid_unichar(const char *str);
extern int replace_chars(char *str, const char *white);
/* 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 commands */
extern int udevmonitor(int argc, char *argv[], char *envp[]);
extern int udevinfo(int argc, char *argv[], char *envp[]);
extern int udevcontrol(int argc, char *argv[], char *envp[]);
extern int udevtrigger(int argc, char *argv[], char *envp[]);
extern int udevsettle(int argc, char *argv[], char *envp[]);
extern int udevtest(int argc, char *argv[], char *envp[]);
#endif