1 files changed, 31 insertions, 0 deletions

diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index f6f5f8af2112..03b3e6d405ff 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -399,4 +399,35 @@ char *acpi_os_get_next_filename(void *dir_handle);
 void acpi_os_close_directory(void *dir_handle);
 #endif
 
+/*
+ * File I/O and related support
+ */
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_open_file
+ACPI_FILE acpi_os_open_file(const char *path, u8 modes);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_close_file
+void acpi_os_close_file(ACPI_FILE file);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_read_file
+int
+acpi_os_read_file(ACPI_FILE file,
+                  void *buffer, acpi_size size, acpi_size count);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_write_file
+int
+acpi_os_write_file(ACPI_FILE file,
+                   void *buffer, acpi_size size, acpi_size count);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_file_offset
+long acpi_os_get_file_offset(ACPI_FILE file);
+#endif
+
+#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_set_file_offset
+acpi_status acpi_os_set_file_offset(ACPI_FILE file, long offset, u8 from);
+#endif
+
 #endif                          /* __ACPIOSXF_H__ */