1 files changed, 113 insertions, 0 deletions
diff --git a/src/shared/condition.h b/src/shared/condition.h
new file mode 100644
index 0000000..54cc904
--- /dev/null
+++ b/src/shared/condition.h
@@ -0,0 +1,113 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "list.h"
+#include "macro.h"
+
+typedef enum ConditionType {
+        CONDITION_ARCHITECTURE,
+        CONDITION_FIRMWARE,
+        CONDITION_VIRTUALIZATION,
+        CONDITION_HOST,
+        CONDITION_KERNEL_COMMAND_LINE,
+        CONDITION_KERNEL_VERSION,
+        CONDITION_CREDENTIAL,
+        CONDITION_SECURITY,
+        CONDITION_CAPABILITY,
+        CONDITION_AC_POWER,
+        CONDITION_MEMORY,
+        CONDITION_CPUS,
+        CONDITION_ENVIRONMENT,
+        CONDITION_CPU_FEATURE,
+        CONDITION_OS_RELEASE,
+        CONDITION_MEMORY_PRESSURE,
+        CONDITION_CPU_PRESSURE,
+        CONDITION_IO_PRESSURE,
+
+        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_PATH_IS_ENCRYPTED,
+        CONDITION_DIRECTORY_NOT_EMPTY,
+        CONDITION_FILE_NOT_EMPTY,
+        CONDITION_FILE_IS_EXECUTABLE,
+
+        CONDITION_USER,
+        CONDITION_GROUP,
+
+        CONDITION_CONTROL_GROUP_CONTROLLER,
+
+        _CONDITION_TYPE_MAX,
+        _CONDITION_TYPE_INVALID = -EINVAL,
+} ConditionType;
+
+typedef enum ConditionResult {
+        CONDITION_UNTESTED,
+        CONDITION_SUCCEEDED,
+        CONDITION_FAILED,
+        CONDITION_ERROR,
+        _CONDITION_RESULT_MAX,
+        _CONDITION_RESULT_INVALID = -EINVAL,
+} 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);
+Condition* condition_free(Condition *c);
+Condition* condition_free_list_type(Condition *first, ConditionType type);
+static inline Condition* condition_free_list(Condition *first) {
+        return condition_free_list_type(first, _CONDITION_TYPE_INVALID);
+}
+
+int condition_test(Condition *c, char **env);
+
+typedef int (*condition_test_logger_t)(void *userdata, int level, int error, const char *file, int line, const char *func, const char *format, ...) _printf_(7, 8);
+typedef const char* (*condition_to_string_t)(ConditionType t) _const_;
+bool condition_test_list(Condition *first, char **env, condition_to_string_t to_string, condition_test_logger_t logger, void *userdata);
+
+void condition_dump(Condition *c, FILE *f, const char *prefix, condition_to_string_t to_string);
+void condition_dump_list(Condition *c, FILE *f, const char *prefix, condition_to_string_t to_string);
+
+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_;
+
+static inline bool condition_takes_path(ConditionType t) {
+        return IN_SET(t,
+                      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_PATH_IS_ENCRYPTED,
+                      CONDITION_DIRECTORY_NOT_EMPTY,
+                      CONDITION_FILE_NOT_EMPTY,
+                      CONDITION_FILE_IS_EXECUTABLE,
+                      CONDITION_NEEDS_UPDATE);
+}