X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev.h;h=5d54b5443248c894f142169de404bad78d8f4086;hp=32fda379e54e467965bce37735580ab2540c6f92;hb=03b24b71e05d116c592b08281f8a5f0dadf6d3c7;hpb=ef672b3dc450846d540cf1a0519fe273bbd62e5f diff --git a/udev.h b/udev.h index 32fda379e..5d54b5443 100644 --- a/udev.h +++ b/udev.h @@ -1,9 +1,8 @@ /* * udev.h * - * Userspace devfs - * * Copyright (C) 2003 Greg Kroah-Hartman + * Copyright (C) 2003-2005 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 @@ -20,145 +19,145 @@ * */ -#ifndef UDEV_H -#define UDEV_H +#ifndef _UDEV_H_ +#define _UDEV_H_ -#include -#include -#include -#include +#include #include -#define COMMENT_CHARACTER '#' +#include "list.h" +#include "logging.h" +#include "udev_libc_wrapper.h" +#include "udev_version.h" -#define NAME_SIZE 100 -#define OWNER_SIZE 30 -#define GROUP_SIZE 30 -#define MODE_SIZE 8 +#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 ACTION_SIZE 30 -#define DEVPATH_SIZE 255 -#define SUBSYSTEM_SIZE 30 +#define DEFAULT_PARTITIONS_COUNT 15 +#define UDEV_ALARM_TIMEOUT 180 -/* length of public data */ -#define UDEVICE_LEN (offsetof(struct udevice, bus_id)) +#define UDEV_MAX(a,b) ((a) > (b) ? (a) : (b)) -struct udevice { - char name[NAME_SIZE]; - char owner[OWNER_SIZE]; - char group[GROUP_SIZE]; - char type; - int major; - int minor; - unsigned int mode; /* not mode_t due to conflicting definitions in different libcs */ - char symlink[NAME_SIZE]; - int partitions; +/* pipes */ +#define READ_END 0 +#define WRITE_END 1 + +#define DB_DIR ".udev/db" + +struct udev_rules; - /* private data that help us in building strings */ - char bus_id[SYSFS_NAME_LEN]; - char program_result[NAME_SIZE]; +struct sysfs_device { + struct list_head node; /* for device cache */ + 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 kernel_name[NAME_SIZE]; + char driver[NAME_SIZE]; /* device driver name */ }; -#define strfieldcpy(to, from) \ -do { \ - to[sizeof(to)-1] = '\0'; \ - strncpy(to, from, sizeof(to)-1); \ -} while (0) - -#define strfieldcat(to, from) \ -do { \ - to[sizeof(to)-1] = '\0'; \ - strncat(to, from, sizeof(to) - strlen(to)-1); \ -} while (0) - -#define strnfieldcpy(to, from, maxsize) \ -do { \ - to[maxsize-1] = '\0'; \ - strncpy(to, from, maxsize-1); \ -} while (0) - -#define strnfieldcat(to, from, maxsize) \ -do { \ - to[maxsize-1] = '\0'; \ - strncat(to, from, maxsize - strlen(to)-1); \ -} while (0) - -#define strintcat(to, i) \ -do { \ - to[sizeof(to)-1] = '\0'; \ - snprintf((to) + strlen(to), sizeof(to) - strlen(to)-1, "%u", i); \ -} while (0) - -#define strnintcat(to, i, maxsize) \ -do { \ - to[maxsize-1] = '\0'; \ - snprintf((to) + strlen(to), maxsize - strlen(to)-1, "%u", i); \ -} while (0) - -#define foreach_strpart(str, separator, pos, len) \ - for(pos = str, len = 0; \ - (pos) < ((str) + strlen(str)); \ - pos = pos + len + strspn(pos, separator), len = strcspn(pos, separator)) \ - if (len > 0) - -static inline char *get_action(void) -{ - char *action; - - action = getenv("ACTION"); - if (action != NULL && strlen(action) > ACTION_SIZE) - action[ACTION_SIZE-1] = '\0'; - - return action; -} - -static inline char *get_devpath(void) -{ - char *devpath; - - devpath = getenv("DEVPATH"); - if (devpath != NULL && strlen(devpath) > DEVPATH_SIZE) - devpath[DEVPATH_SIZE-1] = '\0'; - - return devpath; -} - -static inline char *get_seqnum(void) -{ - char *seqnum; - - seqnum = getenv("SEQNUM"); - - return seqnum; -} - -static inline char *get_subsystem(char *subsystem) -{ - if (subsystem != NULL && strlen(subsystem) > SUBSYSTEM_SIZE) - subsystem[SUBSYSTEM_SIZE-1] = '\0'; - - return subsystem; -} - -extern int udev_add_device(char *path, char *subsystem, int fake); -extern int udev_remove_device(char *path, char *subsystem); -extern void udev_init_config(void); -extern int parse_get_pair(char **orig_string, char **left, char **right); - -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[MODE_SIZE]; -extern char default_owner_str[OWNER_SIZE]; -extern char default_group_str[GROUP_SIZE]; -extern int udev_log; -extern int udev_sleep; +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 char *sysfs_attr_get_value(const char *devpath, const char *attr_name); + +/* udev_add.c */ +extern int udev_make_node(struct udevice *udev, const char *file, dev_t devt, mode_t mode, uid_t uid, gid_t gid); +extern int udev_add_device(struct udevice *udev); + +/* udev_remove.c */ +extern int udev_remove_device(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