1 files changed, 110 insertions, 0 deletions
diff --git a/hurd/lookup-at.c b/hurd/lookup-at.c
new file mode 100644
index 0000000000..a2d50cb192
--- /dev/null
+++ b/hurd/lookup-at.c
@@ -0,0 +1,110 @@
+/* Lookup helper function for Hurd implementation of *at functions.
+   Copyright (C) 2006 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <hurd.h>
+#include <hurd/lookup.h>
+#include <hurd/fd.h>
+#include <string.h>
+#include <fcntl.h>
+
+file_t
+__file_name_lookup_at (int fd, int at_flags,
+		       const char *file_name, int flags, mode_t mode)
+{
+  error_t err;
+  file_t result;
+
+  flags |= (at_flags & AT_SYMLINK_NOFOLLOW) ? O_NOLINK : 0;
+  at_flags &= ~AT_SYMLINK_NOFOLLOW;
+  if (at_flags != 0)
+    return __hurd_fail (EINVAL);
+
+  if (fd == AT_FDCWD || file_name[0] == '/')
+    return __file_name_lookup (file_name, flags, mode);
+
+  file_t startdir;
+  error_t use_init_port (int which, error_t (*operate) (mach_port_t))
+    {
+      return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
+	      _hurd_ports_use (which, operate));
+    }
+
+  err = HURD_DPORT_USE (fd, (startdir = port,
+			     __hurd_file_name_lookup (&use_init_port,
+						      &__getdport, NULL,
+						      file_name,
+						      flags,
+						      mode & ~_hurd_umask,
+						      &result)));
+
+  return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
+}
+
+file_t
+__file_name_split_at (int fd, const char *file_name, char **name)
+{
+  error_t err;
+  file_t result;
+
+  if (fd == AT_FDCWD || file_name[0] == '/')
+    return __file_name_split (file_name, name);
+
+  err = __hurd_file_name_split (&_hurd_ports_use, &__getdport, 0,
+				file_name, &result, name);
+
+  file_t startdir;
+  error_t use_init_port (int which, error_t (*operate) (mach_port_t))
+  {
+    return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
+	    _hurd_ports_use (which, operate));
+  }
+
+  err = HURD_DPORT_USE (fd, (startdir = port,
+			     __hurd_file_name_split (&use_init_port,
+						     &__getdport, 0,
+						     file_name,
+						     &result, name)));
+
+  return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
+}
+
+file_t
+__directory_name_split_at (int fd, const char *directory_name, char **name)
+{
+  error_t err;
+  file_t result;
+
+  if (fd == AT_FDCWD || directory_name[0] == '/')
+    return __directory_name_split (directory_name, name);
+
+  file_t startdir;
+  error_t use_init_port (int which, error_t (*operate) (mach_port_t))
+    {
+      return (which == INIT_PORT_CWDIR ? (*operate) (startdir) :
+	      _hurd_ports_use (which, operate));
+    }
+
+  err = HURD_DPORT_USE (fd, (startdir = port,
+			     __hurd_directory_name_split (&use_init_port,
+							  &__getdport, 0,
+							  directory_name,
+							  &result, name)));
+
+  return err ? (__hurd_dfail (fd, err), MACH_PORT_NULL) : result;
+}