udev.h

   1 /*
   2  * udev.h
   3  *
   4  * Userspace devfs
   5  *
   6  * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
   7  *
   8  *      This program is free software; you can redistribute it and/or modify it
   9  *      under the terms of the GNU General Public License as published by the
  10  *      Free Software Foundation version 2 of the License.
  11  *
  12  *      This program is distributed in the hope that it will be useful, but
  13  *      WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  *      General Public License for more details.
  16  *
  17  *      You should have received a copy of the GNU General Public License along
  18  *      with this program; if not, write to the Free Software Foundation, Inc.,
  19  *      675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #ifndef UDEV_H
  24 #define UDEV_H
  25
  26 #include "libsysfs/libsysfs.h"
  27 #include <sys/param.h>
  28
  29 #ifdef DEBUG
  30 #include <syslog.h>
  31 #define dbg(format, arg...)                                                             \
  32         do {                                                                            \
  33                 log_message (LOG_DEBUG , "%s: " format , __FUNCTION__ , ## arg);        \
  34         } while (0)
  35 #else
  36         #define dbg(format, arg...) do { } while (0)
  37 #endif
  38
  39 /* Parser needs it's own debugging statement, we usually don't care about this at all */
  40 #ifdef DEBUG_PARSER
  41 #define dbg_parse(format, arg...)                                                       \
  42         do {                                                                            \
  43                 log_message (LOG_DEBUG , "%s: " format , __FUNCTION__ , ## arg);        \
  44         } while (0)
  45 #else
  46         #define dbg_parse(format, arg...) do { } while (0)
  47 #endif
  48
  49
  50 extern int log_message (int level, const char *format, ...)
  51         __attribute__ ((format (printf, 2, 3)));
  52
  53
  54 /* filenames for the config and database files */
  55 #define UDEV_DB                         ".udev.tdb"
  56 #define UDEV_CONFIG_PERMISSION_FILE     "udev.permissions"
  57 #define UDEV_CONFIG_FILE                "udev.config"
  58
  59 #define NAME_SIZE       100
  60 #define OWNER_SIZE      30
  61 #define GROUP_SIZE      30
  62
  63 struct udevice {
  64         char name[NAME_SIZE];
  65         char owner[OWNER_SIZE];
  66         char group[GROUP_SIZE];
  67         char type;
  68         int major;
  69         int minor;
  70         mode_t mode;
  71
  72         /* fields that help us in building strings */
  73         unsigned char bus_id[SYSFS_NAME_LEN];
  74         unsigned char callout_value[NAME_SIZE];
  75         unsigned char kernel_number[NAME_SIZE];
  76
  77 };
  78
  79 #define strfieldcpy(to, from) \
  80 do { \
  81         to[sizeof(to)-1] = '\0'; \
  82         strncpy(to, from, sizeof(to)-1); \
  83 } while (0)
  84
  85 extern int udev_add_device(char *path, char *subsystem);
  86 extern int udev_remove_device(char *path, char *subsystem);
  87
  88 extern char **main_argv;
  89 extern char **main_envp;
  90 extern char sysfs_path[SYSFS_PATH_MAX];
  91 extern char *udev_config_dir;
  92 extern char *udev_root;
  93 extern char udev_db_filename[PATH_MAX+NAME_MAX];
  94 extern char udev_config_permission_filename[PATH_MAX+NAME_MAX];
  95 extern char udev_config_filename[PATH_MAX+NAME_MAX];
  96
  97 #endif