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diff --git a/libipt/internal/include/posix/pt_section_posix.h b/libipt/internal/include/posix/pt_section_posix.h
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+/*
+ * Copyright (c) 2015-2019, Intel Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *  * Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef PT_SECTION_POSIX_H
+#define PT_SECTION_POSIX_H
+
+#include <stdint.h>
+#include <sys/stat.h>
+
+struct pt_section;
+
+
+/* Fstat-based file status. */
+struct pt_sec_posix_status {
+	/* The file status. */
+	struct stat stat;
+};
+
+/* MMAP-based section mapping information. */
+struct pt_sec_posix_mapping {
+	/* The mmap base address. */
+	uint8_t *base;
+
+	/* The mapped memory size. */
+	uint64_t size;
+
+	/* The begin and end of the mapped memory. */
+	const uint8_t *begin, *end;
+};
+
+
+/* Map a section.
+ *
+ * On success, sets @section's mapping, unmap, and read pointers.
+ *
+ * Returns zero on success, a negative error code otherwise.
+ * Returns -pte_internal if @section or @file are NULL.
+ * Returns -pte_invalid if @section can't be mapped.
+ */
+extern int pt_sec_posix_map(struct pt_section *section, int fd);
+
+/* Unmap a section.
+ *
+ * On success, clears @section's mapping, unmap, and read pointers.
+ *
+ * Returns zero on success, a negative error code otherwise.
+ * Returns -pte_internal if @section is NULL.
+ * Returns -pte_internal if @section has not been mapped.
+ */
+extern int pt_sec_posix_unmap(struct pt_section *section);
+
+/* Read memory from an mmaped section.
+ *
+ * Reads at most @size bytes from @section at @offset into @buffer.
+ *
+ * Returns the number of bytes read on success, a negative error code otherwise.
+ * Returns -pte_invalid if @section or @buffer are NULL.
+ * Returns -pte_nomap if @offset is beyond the end of the section.
+ */
+extern int pt_sec_posix_read(const struct pt_section *section, uint8_t *buffer,
+			     uint16_t size, uint64_t offset);
+
+/* Compute the memory size of a section.
+ *
+ * On success, provides the amount of memory used for mapping @section in bytes
+ * in @size.
+ *
+ * Returns zero on success, a negative error code otherwise.
+ * Returns -pte_internal if @section or @size is NULL.
+ * Returns -pte_internal if @section has not been mapped.
+ */
+extern int pt_sec_posix_memsize(const struct pt_section *section,
+				uint64_t *size);
+
+#endif /* PT_SECTION_POSIX_H */