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diff --git a/src/shared/condition.h b/src/shared/condition.h
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+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "list.h"
+#include "macro.h"
+
+typedef enum ConditionType {
+ CONDITION_ARCHITECTURE,
+ CONDITION_VIRTUALIZATION,
+ CONDITION_HOST,
+ CONDITION_KERNEL_COMMAND_LINE,
+ CONDITION_SECURITY,
+ CONDITION_CAPABILITY,
+ CONDITION_AC_POWER,
+
+ CONDITION_NEEDS_UPDATE,
+ CONDITION_FIRST_BOOT,
+
+ CONDITION_PATH_EXISTS,
+ CONDITION_PATH_EXISTS_GLOB,
+ CONDITION_PATH_IS_DIRECTORY,
+ CONDITION_PATH_IS_SYMBOLIC_LINK,
+ CONDITION_PATH_IS_MOUNT_POINT,
+ CONDITION_PATH_IS_READ_WRITE,
+ CONDITION_DIRECTORY_NOT_EMPTY,
+ CONDITION_FILE_NOT_EMPTY,
+ CONDITION_FILE_IS_EXECUTABLE,
+
+ CONDITION_NULL,
+
+ _CONDITION_TYPE_MAX,
+ _CONDITION_TYPE_INVALID = -1
+} ConditionType;
+
+typedef enum ConditionResult {
+ CONDITION_UNTESTED,
+ CONDITION_SUCCEEDED,
+ CONDITION_FAILED,
+ CONDITION_ERROR,
+ _CONDITION_RESULT_MAX,
+ _CONDITION_RESULT_INVALID = -1
+} ConditionResult;
+
+typedef struct Condition {
+ ConditionType type:8;
+
+ bool trigger:1;
+ bool negate:1;
+
+ ConditionResult result:6;
+
+ char *parameter;
+
+ LIST_FIELDS(struct Condition, conditions);
+} Condition;
+
+Condition* condition_new(ConditionType type, const char *parameter, bool trigger, bool negate);
+void condition_free(Condition *c);
+void condition_free_list(Condition *c);
+
+int condition_test(Condition *c);
+
+void condition_dump(Condition *c, FILE *f, const char *prefix, const char *(*to_string)(ConditionType t));
+void condition_dump_list(Condition *c, FILE *f, const char *prefix, const char *(*to_string)(ConditionType t));
+
+const char* condition_type_to_string(ConditionType t) _const_;
+ConditionType condition_type_from_string(const char *s) _pure_;
+
+const char* assert_type_to_string(ConditionType t) _const_;
+ConditionType assert_type_from_string(const char *s) _pure_;
+
+const char* condition_result_to_string(ConditionResult r) _const_;
+ConditionResult condition_result_from_string(const char *s) _pure_;