X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev.h;h=6ef95133d57e7f33f8f1845ca2c19388d0a23d2b;hp=90aa82393911bafece7d3d9d59ef9882e9214aff;hb=db6e59df561dbedb89a27d7362d6564847258bfe;hpb=54988802b795328ceba29480611102902e88f572 diff --git a/udev.h b/udev.h index 90aa82393..6ef95133d 100644 --- a/udev.h +++ b/udev.h @@ -1,9 +1,6 @@ /* - * udev.h - * - * Userspace devfs - * * Copyright (C) 2003 Greg Kroah-Hartman + * Copyright (C) 2003-2006 Kay Sievers * * 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 @@ -16,57 +13,155 @@ * * 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. + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * */ -#ifndef UDEV_H -#define UDEV_H +#ifndef _UDEV_H_ +#define _UDEV_H_ -#include "libsysfs/libsysfs.h" +#include #include -#define COMMENT_CHARACTER '#' +#include "list.h" +#include "logging.h" +#include "udev_sysdeps.h" +#include "udev_version.h" + +#define COMMENT_CHARACTER '#' +#define LINE_SIZE 512 +#define PATH_SIZE 512 +#define NAME_SIZE 128 +#define VALUE_SIZE 128 + +#define DEFAULT_PARTITIONS_COUNT 15 +#define UDEV_ALARM_TIMEOUT 180 + +#define UDEV_MAX(a,b) ((a) > (b) ? (a) : (b)) -#define NAME_SIZE 100 -#define OWNER_SIZE 30 -#define GROUP_SIZE 30 +/* pipes */ +#define READ_END 0 +#define WRITE_END 1 + +#define DB_DIR ".udev/db" +#define DB_NAME_INDEX_DIR ".udev/names" + +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 { - char name[NAME_SIZE]; - char owner[OWNER_SIZE]; - char group[GROUP_SIZE]; - char type; - int major; - int minor; + /* 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[NAME_SIZE]; + int owner_final; + char group[NAME_SIZE]; + int group_final; mode_t mode; - char symlink[NAME_SIZE]; + int mode_final; + dev_t devt; - /* fields that help us in building strings */ - unsigned char bus_id[SYSFS_NAME_LEN]; - unsigned char program_result[NAME_SIZE]; - unsigned char kernel_number[NAME_SIZE]; - unsigned char kernel_name[NAME_SIZE]; + /* 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 test_run; }; -#define strfieldcpy(to, from) \ -do { \ - to[sizeof(to)-1] = '\0'; \ - strncpy(to, from, sizeof(to)-1); \ -} while (0) - -extern int udev_add_device(char *path, char *subsystem); -extern int udev_remove_device(char *path, char *subsystem); -extern void udev_init_config(void); - -extern char **main_argv; -extern char **main_envp; -extern char sysfs_path[SYSFS_PATH_MAX]; -extern char udev_root[PATH_MAX]; -extern char udev_db_filename[PATH_MAX+NAME_MAX]; -extern char udev_permissions_filename[PATH_MAX+NAME_MAX]; -extern char udev_config_filename[PATH_MAX+NAME_MAX]; -extern char udev_rules_filename[PATH_MAX+NAME_MAX]; -extern char default_mode_str[NAME_MAX]; +/* 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(struct udevice *udev); +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, 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); + +/* 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_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]; +}; +extern int log_priority(const char *priority); +extern char *name_list_add(struct list_head *name_list, const char *name, int sort); +extern char *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_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