1 files changed, 66 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/mach/hurd/readdir.c b/REORG.TODO/sysdeps/mach/hurd/readdir.c
new file mode 100644
index 0000000000..147a0bc469
--- /dev/null
+++ b/REORG.TODO/sysdeps/mach/hurd/readdir.c
@@ -0,0 +1,66 @@
+/* Copyright (C) 1993-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stddef.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <endian.h>
+#include <assert.h>
+
+/* Read a directory entry from DIRP.  */
+struct dirent *
+__readdir (DIR *dirp)
+{
+  struct dirent64 *entry64 = __readdir64 (dirp);
+
+  if (sizeof (struct dirent64) == sizeof (struct dirent))
+    /* We should in fact just be an alias to readdir64 on this machine.  */
+    return (struct dirent *) entry64;
+
+  /* These are all compile-time constants.  We know that d_ino is the first
+     member and that the layout of the following members matches exactly in
+     both structures.  */
+  assert (offsetof (struct dirent, d_ino) == 0);
+  assert (offsetof (struct dirent64, d_ino) == 0);
+# define MATCH(memb)							      \
+  assert (offsetof (struct dirent64, memb) - sizeof (entry64->d_ino)	      \
+	  == offsetof (struct dirent, memb) - sizeof (ino_t))
+  MATCH (d_reclen);
+  MATCH (d_type);
+  MATCH (d_namlen);
+# undef MATCH
+
+  if (entry64 == NULL)
+    return NULL;
+
+  struct dirent *const entry = ((void *) (&entry64->d_ino + 1)
+				- sizeof entry->d_ino);
+  const ino_t d_ino = entry64->d_ino;
+  if (d_ino != entry64->d_ino)
+    {
+      __set_errno (EOVERFLOW);
+      return NULL;
+    }
+# if BYTE_ORDER != BIG_ENDIAN	/* We just skipped over the zero high word.  */
+  entry->d_ino = d_ino;	/* ... or the nonzero low word, swap it.  */
+# endif
+  entry->d_reclen -= sizeof entry64->d_ino - sizeof entry->d_ino;
+  return entry;
+}
+
+weak_alias (__readdir, readdir)