udev_rules.h

   1 /*
   2  * udev_rules.h
   3  *
   4  * Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.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 #ifndef UDEV_RULES_H
  23 #define UDEV_RULES_H
  24
  25 #include "udev.h"
  26 #include "list.h"
  27
  28 #define PAIRS_MAX               5
  29 #define RULEFILE_SUFFIX         ".rules"
  30
  31 enum key_operation {
  32         KEY_OP_UNSET,
  33         KEY_OP_MATCH,
  34         KEY_OP_NOMATCH,
  35         KEY_OP_ADD,
  36         KEY_OP_ASSIGN,
  37         KEY_OP_ASSIGN_FINAL,
  38 };
  39
  40 struct key {
  41         enum key_operation operation;
  42         size_t val_off;
  43 };
  44
  45 struct key_pair {
  46         struct key key;
  47         size_t key_name_off;
  48 };
  49
  50 struct key_pairs {
  51         int count;
  52         struct key_pair keys[PAIRS_MAX];
  53 };
  54
  55 enum import_type {
  56         IMPORT_UNSET,
  57         IMPORT_PROGRAM,
  58         IMPORT_FILE,
  59         IMPORT_PARENT,
  60 };
  61
  62 struct udev_rule {
  63         struct key action;
  64         struct key devpath;
  65         struct key kernel;
  66         struct key subsystem;
  67         struct key driver;
  68         struct key_pairs attr;
  69
  70         struct key kernels;
  71         struct key subsystems;
  72         struct key drivers;
  73         struct key_pairs attrs;
  74
  75         struct key_pairs env;
  76         struct key program;
  77         struct key result;
  78         struct key import;
  79         enum import_type import_type;
  80         struct key run;
  81         struct key wait_for_sysfs;
  82         struct key label;
  83         struct key goto_label;
  84
  85         struct key name;
  86         struct key symlink;
  87         struct key owner;
  88         struct key group;
  89         mode_t mode;
  90         enum key_operation mode_operation;
  91
  92         unsigned int partitions;
  93         unsigned int last_rule:1,
  94                      ignore_device:1,
  95                      ignore_remove:1;
  96
  97         size_t bufsize;
  98         char buf[];
  99 };
 100
 101 struct udev_rules {
 102         char *buf;
 103         size_t bufsize;
 104         size_t current;
 105         int resolve_names;
 106 };
 107
 108 extern int udev_rules_init(struct udev_rules *rules, int resolve_names);
 109 extern void udev_rules_cleanup(struct udev_rules *rules);
 110
 111 extern void udev_rules_iter_init(struct udev_rules *rules);
 112 extern struct udev_rule *udev_rules_iter_next(struct udev_rules *rules);
 113 extern struct udev_rule *udev_rules_iter_label(struct udev_rules *rules, const char *label);
 114
 115 extern int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev);
 116 extern int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev);
 117
 118 extern void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize);
 119
 120 #endif