udev/udevd.h

   1 /*
   2  * Copyright (C) 2004 Ling, Xiaofeng <xiaofeng.ling@intel.com>
   3  * Copyright (C) 2004-2006 Kay Sievers <kay.sievers@vrfy.org>
   4  *
   5  *      This program is free software; you can redistribute it and/or modify it
   6  *      under the terms of the GNU General Public License as published by the
   7  *      Free Software Foundation version 2 of the License.
   8  *
   9  *      This program is distributed in the hope that it will be useful, but
  10  *      WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *      General Public License for more details.
  13  *
  14  *      You should have received a copy of the GNU General Public License along
  15  *      with this program; if not, write to the Free Software Foundation, Inc.,
  16  *      51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  *
  18  */
  19
  20 #include "list.h"
  21
  22 #define UDEVD_PRIORITY                  -4
  23 #define UDEV_PRIORITY                   -2
  24
  25 /* maximum limit of forked childs */
  26 #define UDEVD_MAX_CHILDS                256
  27 /* start to throttle forking if maximum number of running childs in our session is reached */
  28 #define UDEVD_MAX_CHILDS_RUNNING        16
  29
  30 /* linux/include/linux/kobject.h */
  31 #define UEVENT_BUFFER_SIZE              2048
  32 #define UEVENT_NUM_ENVP                 32
  33
  34 #define UDEVD_CTRL_SOCK_PATH            "@" UDEV_PREFIX "/org/kernel/udev/udevd"
  35 #define UDEVD_CTRL_MAGIC                "udevd_" VERSION
  36
  37 enum udevd_ctrl_msg_type {
  38         UDEVD_CTRL_UNKNOWN,
  39         UDEVD_CTRL_SET_LOG_LEVEL,
  40         UDEVD_CTRL_STOP_EXEC_QUEUE,
  41         UDEVD_CTRL_START_EXEC_QUEUE,
  42         UDEVD_CTRL_RELOAD_RULES,
  43         UDEVD_CTRL_ENV,
  44         UDEVD_CTRL_SET_MAX_CHILDS,
  45         UDEVD_CTRL_SET_MAX_CHILDS_RUNNING,
  46 };
  47
  48 struct udevd_ctrl_msg {
  49         char magic[32];
  50         enum udevd_ctrl_msg_type type;
  51         union {
  52                 int intval;
  53                 char buf[256];
  54         };
  55 };
  56
  57 struct udevd_uevent_msg {
  58         struct list_head node;
  59         pid_t pid;
  60         int exitstatus;
  61         time_t queue_time;
  62         char *action;
  63         char *devpath;
  64         char *subsystem;
  65         char *driver;
  66         dev_t devt;
  67         unsigned long long seqnum;
  68         char *devpath_old;
  69         char *physdevpath;
  70         unsigned int timeout;
  71         char *envp[UEVENT_NUM_ENVP+1];
  72         char envbuf[];
  73 };