src/shared/condition.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 #pragma once
   4
   5 /***
   6   This file is part of systemd.
   7
   8   Copyright 2010 Lennart Poettering
   9
  10   systemd is free software; you can redistribute it and/or modify it
  11   under the terms of the GNU Lesser General Public License as published by
  12   the Free Software Foundation; either version 2.1 of the License, or
  13   (at your option) any later version.
  14
  15   systemd is distributed in the hope that it will be useful, but
  16   WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18   Lesser General Public License for more details.
  19
  20   You should have received a copy of the GNU Lesser General Public License
  21   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  22 ***/
  23
  24 #include <stdbool.h>
  25 #include <stdio.h>
  26
  27 #include "list.h"
  28 #include "macro.h"
  29
  30 typedef enum ConditionType {
  31         CONDITION_ARCHITECTURE,
  32         CONDITION_VIRTUALIZATION,
  33         CONDITION_HOST,
  34         CONDITION_KERNEL_COMMAND_LINE,
  35         CONDITION_SECURITY,
  36         CONDITION_CAPABILITY,
  37         CONDITION_AC_POWER,
  38
  39         CONDITION_NEEDS_UPDATE,
  40         CONDITION_FIRST_BOOT,
  41
  42         CONDITION_PATH_EXISTS,
  43         CONDITION_PATH_EXISTS_GLOB,
  44         CONDITION_PATH_IS_DIRECTORY,
  45         CONDITION_PATH_IS_SYMBOLIC_LINK,
  46         CONDITION_PATH_IS_MOUNT_POINT,
  47         CONDITION_PATH_IS_READ_WRITE,
  48         CONDITION_DIRECTORY_NOT_EMPTY,
  49         CONDITION_FILE_NOT_EMPTY,
  50         CONDITION_FILE_IS_EXECUTABLE,
  51
  52         CONDITION_NULL,
  53
  54         _CONDITION_TYPE_MAX,
  55         _CONDITION_TYPE_INVALID = -1
  56 } ConditionType;
  57
  58 typedef enum ConditionResult {
  59         CONDITION_UNTESTED,
  60         CONDITION_SUCCEEDED,
  61         CONDITION_FAILED,
  62         CONDITION_ERROR,
  63         _CONDITION_RESULT_MAX,
  64         _CONDITION_RESULT_INVALID = -1
  65 } ConditionResult;
  66
  67 typedef struct Condition {
  68         ConditionType type:8;
  69
  70         bool trigger:1;
  71         bool negate:1;
  72
  73         ConditionResult result:6;
  74
  75         char *parameter;
  76
  77         LIST_FIELDS(struct Condition, conditions);
  78 } Condition;
  79
  80 Condition* condition_new(ConditionType type, const char *parameter, bool trigger, bool negate);
  81 void condition_free(Condition *c);
  82 void condition_free_list(Condition *c);
  83
  84 int condition_test(Condition *c);
  85
  86 void condition_dump(Condition *c, FILE *f, const char *prefix, const char *(*to_string)(ConditionType t));
  87 void condition_dump_list(Condition *c, FILE *f, const char *prefix, const char *(*to_string)(ConditionType t));
  88
  89 const char* condition_type_to_string(ConditionType t) _const_;
  90 ConditionType condition_type_from_string(const char *s) _pure_;
  91
  92 const char* assert_type_to_string(ConditionType t) _const_;
  93 ConditionType assert_type_from_string(const char *s) _pure_;
  94
  95 const char* condition_result_to_string(ConditionResult r) _const_;
  96 ConditionResult condition_result_from_string(const char *s) _pure_;