udev_rules.h

   1 /*
   2  * Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.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 #ifndef UDEV_RULES_H
  21 #define UDEV_RULES_H
  22
  23 #include "udev.h"
  24 #include "list.h"
  25
  26 #define PAIRS_MAX               5
  27 #define RULEFILE_SUFFIX         ".rules"
  28
  29 enum key_operation {
  30         KEY_OP_UNSET,
  31         KEY_OP_MATCH,
  32         KEY_OP_NOMATCH,
  33         KEY_OP_ADD,
  34         KEY_OP_ASSIGN,
  35         KEY_OP_ASSIGN_FINAL,
  36 };
  37
  38 struct key {
  39         enum key_operation operation;
  40         size_t val_off;
  41 };
  42
  43 struct key_pair {
  44         struct key key;
  45         size_t key_name_off;
  46 };
  47
  48 struct key_pairs {
  49         int count;
  50         struct key_pair keys[PAIRS_MAX];
  51 };
  52
  53 enum import_type {
  54         IMPORT_UNSET,
  55         IMPORT_PROGRAM,
  56         IMPORT_FILE,
  57         IMPORT_PARENT,
  58 };
  59
  60 struct udev_rule {
  61         struct key action;
  62         struct key devpath;
  63         struct key kernel;
  64         struct key subsystem;
  65         struct key driver;
  66         struct key_pairs attr;
  67
  68         struct key kernels;
  69         struct key subsystems;
  70         struct key drivers;
  71         struct key_pairs attrs;
  72
  73         struct key_pairs env;
  74         struct key program;
  75         struct key result;
  76         struct key import;
  77         enum import_type import_type;
  78         struct key run;
  79         struct key wait_for_sysfs;
  80         struct key label;
  81         struct key goto_label;
  82
  83         struct key name;
  84         struct key symlink;
  85         struct key owner;
  86         struct key group;
  87         mode_t mode;
  88         enum key_operation mode_operation;
  89
  90         unsigned int partitions;
  91         unsigned int last_rule:1,
  92                      ignore_device:1,
  93                      ignore_remove:1;
  94
  95         size_t bufsize;
  96         char buf[];
  97 };
  98
  99 struct udev_rules {
 100         char *buf;
 101         size_t bufsize;
 102         size_t current;
 103         int resolve_names;
 104 };
 105
 106 extern int udev_rules_init(struct udev_rules *rules, int resolve_names);
 107 extern void udev_rules_cleanup(struct udev_rules *rules);
 108
 109 extern void udev_rules_iter_init(struct udev_rules *rules);
 110 extern struct udev_rule *udev_rules_iter_next(struct udev_rules *rules);
 111 extern struct udev_rule *udev_rules_iter_label(struct udev_rules *rules, const char *label);
 112
 113 extern int udev_rules_get_name(struct udev_rules *rules, struct udevice *udev);
 114 extern int udev_rules_get_run(struct udev_rules *rules, struct udevice *udev);
 115
 116 extern void udev_rules_apply_format(struct udevice *udev, char *string, size_t maxsize);
 117
 118 #endif