src/udev/udev.h

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