/* * 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 * 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 #include #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 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 #define UDEV_ROOT "/dev" #define DB_DIR ".udev/db" #define DB_NAME_INDEX_DIR ".udev/names" #define RULES_LIB_DIR "/lib/udev/rules.d" #define RULES_DYN_DIR ".udev/rules.d" #define RULES_ETC_DIR "/etc/udev/rules.d" 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(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); 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