1 files changed, 27 insertions, 0 deletions
diff --git a/winsup/mingw/mingwex/stdio/fseeko64.c b/winsup/mingw/mingwex/stdio/fseeko64.c
new file mode 100755
index 000000000..94e17e929
--- /dev/null
+++ b/winsup/mingw/mingwex/stdio/fseeko64.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <io.h>
+#include <errno.h>
+
+int __cdecl
+fseeko64 (FILE* stream, off64_t offset, int whence)
+{
+  fpos_t pos;
+  if (whence == SEEK_CUR)
+    {
+      /* If stream is invalid, fgetpos sets errno. */
+      if (fgetpos (stream, &pos))
+        return (-1);
+      pos += (fpos_t) offset;
+    }
+  else if (whence == SEEK_END)
+    pos = (fpos_t) (_filelengthi64 (_fileno (stream)) + offset);
+  else if (whence == SEEK_SET)
+    pos = (fpos_t) offset;
+  else
+    {
+      errno = EINVAL;
+      return (-1);
+    }
+  return fsetpos (stream, &pos);
+}
+