udevd.h

   1 /*
   2  * udevd.h
   3  *
   4  * Copyright (C) 2004 Ling, Xiaofeng <xiaofeng.ling@intel.com>
   5  * Copyright (C) 2004-2005 Kay Sievers <kay.sievers@vrfy.org>
   6  *
   7  *      This program is free software; you can redistribute it and/or modify it
   8  *      under the terms of the GNU General Public License as published by the
   9  *      Free Software Foundation version 2 of the License.
  10  *
  11  *      This program is distributed in the hope that it will be useful, but
  12  *      WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *      General Public License for more details.
  15  *
  16  *      You should have received a copy of the GNU General Public License along
  17  *      with this program; if not, write to the Free Software Foundation, Inc.,
  18  *      675 Mass Ave, Cambridge, MA 02139, USA.
  19  *
  20  */
  21
  22 #include "list.h"
  23
  24 #define UDEVD_PRIORITY                  -4
  25 #define UDEV_PRIORITY                   -2
  26
  27 #define EVENT_QUEUE_DIR                 ".udev/queue"
  28 #define EVENT_FAILED_DIR                ".udev/failed"
  29 #define EVENT_SEQNUM                    ".udev/uevent_seqnum"
  30
  31 /* maximum limit of forked childs */
  32 #define UDEVD_MAX_CHILDS                256
  33 /* start to throttle forking if maximum number of running childs in our session is reached */
  34 #define UDEVD_MAX_CHILDS_RUNNING        16
  35
  36 /* linux/include/linux/kobject.h */
  37 #define UEVENT_BUFFER_SIZE              2048
  38 #define UEVENT_NUM_ENVP                 32
  39
  40 #define UDEVD_CTRL_SOCK_PATH            "/org/kernel/udev/udevd"
  41 #define UDEVD_CTRL_MAGIC                "udevd_" UDEV_VERSION
  42
  43 enum udevd_ctrl_msg_type {
  44         UDEVD_CTRL_UNKNOWN,
  45         UDEVD_CTRL_STOP_EXEC_QUEUE,
  46         UDEVD_CTRL_START_EXEC_QUEUE,
  47         UDEVD_CTRL_SET_LOG_LEVEL,
  48         UDEVD_CTRL_SET_MAX_CHILDS,
  49         UDEVD_CTRL_RELOAD_RULES,
  50 };
  51
  52 struct udevd_ctrl_msg {
  53         char magic[32];
  54         enum udevd_ctrl_msg_type type;
  55         char buf[256];
  56 };
  57
  58 struct udevd_uevent_msg {
  59         struct list_head node;
  60         pid_t pid;
  61         int exitstatus;
  62         time_t queue_time;
  63         char *action;
  64         char *devpath;
  65         char *subsystem;
  66         dev_t devt;
  67         unsigned long long seqnum;
  68         char *physdevpath;
  69         unsigned int timeout;
  70         char *envp[UEVENT_NUM_ENVP+1];
  71         char envbuf[];
  72 };