initial import

1 files changed, 62 insertions, 0 deletions

diff --git a/sysdeps/mach/hurd/getdents.c b/sysdeps/mach/hurd/getdents.c
new file mode 100644
index 0000000000..4de2eb351d
--- /dev/null
+++ b/sysdeps/mach/hurd/getdents.c
@@ -0,0 +1,62 @@
+/* Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Ince	
+
+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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stddef.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+#include <string.h>
+
+ssize_t
+DEFUN(__getdirentries, (fd, buf, nbytes, basep),
+      int fd AND PTR buf AND size_t nbytes AND off_t *basep)
+{
+  error_t err;
+  int entriesread;
+  char *data = buf;
+  mach_msg_type_number_t bytesread = nbytes;
+
+  /* Fault before taking any locks.  */
+  *(volatile off_t *) basep = *basep;
+
+  err = HURD_DPORT_USE (fd, __dir_readdir (port, &data, &bytesread,
+					   *basep, -1, nbytes, &entriesread));
+  if (err)
+    return __hurd_dfail (fd, err);
+
+  if (data != buf)
+    {
+      size_t copy = bytesread;
+      if (copy > nbytes)
+	/* The server has a violated the dir_readdir protocol.  */
+	copy = nbytes;
+      memcpy (buf, data, copy);
+      __vm_deallocate (__mach_task_self (), (vm_address_t) data, bytesread);
+      bytesread = copy;
+    }
+
+  *basep += entriesread;
+
+  return bytesread;
+}
+
+weak_alias (__getdirentries, getdirentries)
+