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diff --git a/ioreplay/src/options.h b/ioreplay/src/options.h
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+// Copyright 2018 Mimecast Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef OPTIONS_H
+#define OPTIONS_H
+
+#include <stdbool.h>
+#include "defaults.h"
+
+/**
+ * @brief The options definition, used to store user input
+ */
+typedef struct options_s_ {
+    char *capture_file; /**< The name of the .capture file */
+    char *replay_file; /**< The name of the .replay file */
+    char *stats_file; /**< The name of the .stats file */
+    bool write_stats_file; /**< Write a stats file at the end of the test */
+    char *user; /**< The user name to run the test as */
+    char *name; /**< The name of the test (found in .ioreplay/name sub-dirs) */
+    char *wd_base; /**< The working directory base */
+    int num_workers; /**< The amount of worker processes */
+    int num_threads_per_worker; /**< Max threads per worker processes */
+    bool init; /**< If set ioreplay will initialise the environment */
+    bool replay; /**< If set ioreplay will run/replay the test */
+    bool purge; /**< If set ioreplay will purge the environment */
+    bool trash; /**< If set ioreplay will trash the environment */
+    bool drop_caches; /**< True if  ioreplay should drop all Linux caches */
+    double speed_factor; /**< Specifies how fast the test is replayed */
+    int pid; /**< Specifies a process id to capture */
+    char *module; /**< Specifies the kernel module for capturing */
+} options_s;
+
+/**
+ * @brief Creates a new options object
+ *
+ * The options object contains all options specified by the user as a command
+ * line option. It is filled with default values during creation.
+ *
+ * @return The options object
+ */
+options_s *options_new();
+
+/**
+ * @brief Destroys the options object
+ *
+ * @param o The options object
+ */
+void options_destroy(options_s *o);
+
+#endif // OPTIONS_H