src/udev/udev.h

   1 /*
   2  * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
   3  * Copyright (C) 2003-2010 Kay Sievers <kay@vrfy.org>
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #pragma once
  20
  21 #include <sys/param.h>
  22 #include <sys/types.h>
  23
  24 #include "libudev.h"
  25 #include "sd-netlink.h"
  26
  27 #include "label.h"
  28 #include "libudev-private.h"
  29 #include "macro.h"
  30 #include "strv.h"
  31 #include "util.h"
  32
  33 struct udev_event {
  34         struct udev *udev;
  35         struct udev_device *dev;
  36         struct udev_device *dev_parent;
  37         struct udev_device *dev_db;
  38         char *name;
  39         char *program_result;
  40         mode_t mode;
  41         uid_t uid;
  42         gid_t gid;
  43         struct udev_list seclabel_list;
  44         struct udev_list run_list;
  45         int exec_delay;
  46         usec_t birth_usec;
  47         sd_netlink *rtnl;
  48         unsigned int builtin_run;
  49         unsigned int builtin_ret;
  50         bool inotify_watch;
  51         bool inotify_watch_final;
  52         bool group_set;
  53         bool group_final;
  54         bool owner_set;
  55         bool owner_final;
  56         bool mode_set;
  57         bool mode_final;
  58         bool name_final;
  59         bool devlink_final;
  60         bool run_final;
  61 };
  62
  63 struct udev_watch {
  64         struct udev_list_node node;
  65         int handle;
  66         char *name;
  67 };
  68
  69 /* udev-rules.c */
  70 struct udev_rules;
  71 struct udev_rules *udev_rules_new(struct udev *udev, int resolve_names);
  72 struct udev_rules *udev_rules_unref(struct udev_rules *rules);
  73 bool udev_rules_check_timestamp(struct udev_rules *rules);
  74 int udev_rules_apply_to_event(struct udev_rules *rules, struct udev_event *event,
  75                               usec_t timeout_usec, usec_t timeout_warn_usec,
  76                               struct udev_list *properties_list);
  77 int udev_rules_apply_static_dev_perms(struct udev_rules *rules);
  78
  79 /* udev-event.c */
  80 struct udev_event *udev_event_new(struct udev_device *dev);
  81 void udev_event_unref(struct udev_event *event);
  82 size_t udev_event_apply_format(struct udev_event *event, const char *src, char *dest, size_t size);
  83 int udev_event_apply_subsys_kernel(struct udev_event *event, const char *string,
  84                                    char *result, size_t maxsize, int read_value);
  85 int udev_event_spawn(struct udev_event *event,
  86                      usec_t timeout_usec,
  87                      usec_t timeout_warn_usec,
  88                      bool accept_failure,
  89                      const char *cmd, char *result, size_t ressize);
  90 void udev_event_execute_rules(struct udev_event *event,
  91                               usec_t timeout_usec, usec_t timeout_warn_usec,
  92                               struct udev_list *properties_list,
  93                               struct udev_rules *rules);
  94 void udev_event_execute_run(struct udev_event *event, usec_t timeout_usec, usec_t timeout_warn_usec);
  95 int udev_build_argv(struct udev *udev, char *cmd, int *argc, char *argv[]);
  96
  97 /* udev-watch.c */
  98 int udev_watch_init(struct udev *udev);
  99 void udev_watch_restore(struct udev *udev);
 100 void udev_watch_begin(struct udev *udev, struct udev_device *dev);
 101 void udev_watch_end(struct udev *udev, struct udev_device *dev);
 102 struct udev_device *udev_watch_lookup(struct udev *udev, int wd);
 103
 104 /* udev-node.c */
 105 void udev_node_add(struct udev_device *dev, bool apply,
 106                    mode_t mode, uid_t uid, gid_t gid,
 107                    struct udev_list *seclabel_list);
 108 void udev_node_remove(struct udev_device *dev);
 109 void udev_node_update_old_links(struct udev_device *dev, struct udev_device *dev_old);
 110
 111 /* udev-ctrl.c */
 112 struct udev_ctrl;
 113 struct udev_ctrl *udev_ctrl_new(struct udev *udev);
 114 struct udev_ctrl *udev_ctrl_new_from_fd(struct udev *udev, int fd);
 115 int udev_ctrl_enable_receiving(struct udev_ctrl *uctrl);
 116 struct udev_ctrl *udev_ctrl_unref(struct udev_ctrl *uctrl);
 117 int udev_ctrl_cleanup(struct udev_ctrl *uctrl);
 118 struct udev *udev_ctrl_get_udev(struct udev_ctrl *uctrl);
 119 int udev_ctrl_get_fd(struct udev_ctrl *uctrl);
 120 int udev_ctrl_send_set_log_level(struct udev_ctrl *uctrl, int priority, int timeout);
 121 int udev_ctrl_send_stop_exec_queue(struct udev_ctrl *uctrl, int timeout);
 122 int udev_ctrl_send_start_exec_queue(struct udev_ctrl *uctrl, int timeout);
 123 int udev_ctrl_send_reload(struct udev_ctrl *uctrl, int timeout);
 124 int udev_ctrl_send_ping(struct udev_ctrl *uctrl, int timeout);
 125 int udev_ctrl_send_exit(struct udev_ctrl *uctrl, int timeout);
 126 int udev_ctrl_send_set_env(struct udev_ctrl *uctrl, const char *key, int timeout);
 127 int udev_ctrl_send_set_children_max(struct udev_ctrl *uctrl, int count, int timeout);
 128 struct udev_ctrl_connection;
 129 struct udev_ctrl_connection *udev_ctrl_get_connection(struct udev_ctrl *uctrl);
 130 struct udev_ctrl_connection *udev_ctrl_connection_ref(struct udev_ctrl_connection *conn);
 131 struct udev_ctrl_connection *udev_ctrl_connection_unref(struct udev_ctrl_connection *conn);
 132 struct udev_ctrl_msg;
 133 struct udev_ctrl_msg *udev_ctrl_receive_msg(struct udev_ctrl_connection *conn);
 134 struct udev_ctrl_msg *udev_ctrl_msg_unref(struct udev_ctrl_msg *ctrl_msg);
 135 int udev_ctrl_get_set_log_level(struct udev_ctrl_msg *ctrl_msg);
 136 int udev_ctrl_get_stop_exec_queue(struct udev_ctrl_msg *ctrl_msg);
 137 int udev_ctrl_get_start_exec_queue(struct udev_ctrl_msg *ctrl_msg);
 138 int udev_ctrl_get_reload(struct udev_ctrl_msg *ctrl_msg);
 139 int udev_ctrl_get_ping(struct udev_ctrl_msg *ctrl_msg);
 140 int udev_ctrl_get_exit(struct udev_ctrl_msg *ctrl_msg);
 141 const char *udev_ctrl_get_set_env(struct udev_ctrl_msg *ctrl_msg);
 142 int udev_ctrl_get_set_children_max(struct udev_ctrl_msg *ctrl_msg);
 143
 144 /* built-in commands */
 145 enum udev_builtin_cmd {
 146 #ifdef HAVE_BLKID
 147         UDEV_BUILTIN_BLKID,
 148 #endif
 149         UDEV_BUILTIN_BTRFS,
 150         UDEV_BUILTIN_HWDB,
 151         UDEV_BUILTIN_INPUT_ID,
 152         UDEV_BUILTIN_KEYBOARD,
 153 #ifdef HAVE_KMOD
 154         UDEV_BUILTIN_KMOD,
 155 #endif
 156         UDEV_BUILTIN_NET_ID,
 157         UDEV_BUILTIN_NET_LINK,
 158         UDEV_BUILTIN_PATH_ID,
 159         UDEV_BUILTIN_USB_ID,
 160 #ifdef HAVE_ACL
 161         UDEV_BUILTIN_UACCESS,
 162 #endif
 163         UDEV_BUILTIN_MAX
 164 };
 165 struct udev_builtin {
 166         const char *name;
 167         int (*cmd)(struct udev_device *dev, int argc, char *argv[], bool test);
 168         const char *help;
 169         int (*init)(struct udev *udev);
 170         void (*exit)(struct udev *udev);
 171         bool (*validate)(struct udev *udev);
 172         bool run_once;
 173 };
 174 #ifdef HAVE_BLKID
 175 extern const struct udev_builtin udev_builtin_blkid;
 176 #endif
 177 extern const struct udev_builtin udev_builtin_btrfs;
 178 extern const struct udev_builtin udev_builtin_hwdb;
 179 extern const struct udev_builtin udev_builtin_input_id;
 180 extern const struct udev_builtin udev_builtin_keyboard;
 181 #ifdef HAVE_KMOD
 182 extern const struct udev_builtin udev_builtin_kmod;
 183 #endif
 184 extern const struct udev_builtin udev_builtin_net_id;
 185 extern const struct udev_builtin udev_builtin_net_setup_link;
 186 extern const struct udev_builtin udev_builtin_path_id;
 187 extern const struct udev_builtin udev_builtin_usb_id;
 188 extern const struct udev_builtin udev_builtin_uaccess;
 189 void udev_builtin_init(struct udev *udev);
 190 void udev_builtin_exit(struct udev *udev);
 191 enum udev_builtin_cmd udev_builtin_lookup(const char *command);
 192 const char *udev_builtin_name(enum udev_builtin_cmd cmd);
 193 bool udev_builtin_run_once(enum udev_builtin_cmd cmd);
 194 int udev_builtin_run(struct udev_device *dev, enum udev_builtin_cmd cmd, const char *command, bool test);
 195 void udev_builtin_list(struct udev *udev);
 196 bool udev_builtin_validate(struct udev *udev);
 197 int udev_builtin_add_property(struct udev_device *dev, bool test, const char *key, const char *val);
 198 int udev_builtin_hwdb_lookup(struct udev_device *dev, const char *prefix, const char *modalias,
 199                              const char *filter, bool test);
 200
 201 /* udevadm commands */
 202 struct udevadm_cmd {
 203         const char *name;
 204         int (*cmd)(struct udev *udev, int argc, char *argv[]);
 205         const char *help;
 206         int debug;
 207 };
 208 extern const struct udevadm_cmd udevadm_info;
 209 extern const struct udevadm_cmd udevadm_trigger;
 210 extern const struct udevadm_cmd udevadm_settle;
 211 extern const struct udevadm_cmd udevadm_control;
 212 extern const struct udevadm_cmd udevadm_monitor;
 213 extern const struct udevadm_cmd udevadm_hwdb;
 214 extern const struct udevadm_cmd udevadm_test;
 215 extern const struct udevadm_cmd udevadm_test_builtin;