1 files changed, 118 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/xmknodat.c b/sysdeps/mach/hurd/xmknodat.c
new file mode 100644
index 0000000000..b2227593c9
--- /dev/null
+++ b/sysdeps/mach/hurd/xmknodat.c
@@ -0,0 +1,118 @@
+/* Create a device file relative to an open directory.  Hurd version.
+   Copyright (C) 1991,1992,1993,1994,1995,1996,1999,2002,2005,2006
+	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 <errno.h>
+#include <sys/stat.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+#include <hurd/paths.h>
+#include <fcntl.h>
+#include "stdio-common/_itoa.h"
+#include <string.h>
+#include <sys/types.h>
+
+/* Create a device file named PATH relative to FD, with permission and
+   special bits MODE and device number DEV (which can be constructed
+   from major and minor device numbers with the `makedev' macro
+   above).  */
+int
+__xmknodat (int vers, int fd, const char *path, mode_t mode, dev_t *dev)
+{
+  error_t err;
+  file_t dir, node;
+  char *name;
+  char buf[100], *bp;
+  const char *translator;
+  size_t len;
+
+  if (vers != _MKNOD_VER)
+    return __hurd_fail (EINVAL);
+
+  if (S_ISCHR (mode))
+    {
+      translator = _HURD_CHRDEV;
+      len = sizeof (_HURD_CHRDEV);
+    }
+  else if (S_ISBLK (mode))
+    {
+      translator = _HURD_BLKDEV;
+      len = sizeof (_HURD_BLKDEV);
+    }
+  else if (S_ISFIFO (mode))
+    {
+      translator = _HURD_FIFO;
+      len = sizeof (_HURD_FIFO);
+    }
+  else if (S_ISREG (mode))
+    {
+      translator = NULL;
+      len = 0;
+    }
+  else
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  if (translator != NULL && ! S_ISFIFO (mode))
+    {
+      /* We set the translator to "ifmt\0major\0minor\0", where IFMT
+	 depends on the S_IFMT bits of our MODE argument, and MAJOR and
+	 MINOR are ASCII decimal (octal or hex would do as well)
+	 representations of our arguments.  Thus the convention is that
+	 CHRDEV and BLKDEV translators are invoked with two non-switch
+	 arguments, giving the major and minor device numbers in %i format. */
+
+      bp = buf + sizeof (buf);
+      *--bp = '\0';
+      bp = _itoa (minor (*dev), bp, 10, 0);
+      *--bp = '\0';
+      bp = _itoa (major (*dev), bp, 10, 0);
+      memcpy (bp - len, translator, len);
+      translator = bp - len;
+      len = buf + sizeof (buf) - translator;
+    }
+
+  dir = __file_name_split_at (fd, path, &name);
+  if (dir == MACH_PORT_NULL)
+    return -1;
+
+  /* Create a new, unlinked node in the target directory.  */
+  err = __dir_mkfile (dir, O_WRITE, (mode & ~S_IFMT) & ~_hurd_umask, &node);
+
+  if (! err && translator != NULL)
+    /* Set the node's translator to make it a device.  */
+    err = __file_set_translator (node,
+				 FS_TRANS_EXCL | FS_TRANS_SET,
+				 FS_TRANS_EXCL | FS_TRANS_SET, 0,
+				 translator, len,
+				 MACH_PORT_NULL, MACH_MSG_TYPE_COPY_SEND);
+
+  if (! err)
+    /* Link the node, now a valid device, into the target directory.  */
+    err = __dir_link (dir, node, name, 1);
+
+  __mach_port_deallocate (__mach_task_self (), dir);
+  __mach_port_deallocate (__mach_task_self (), node);
+
+  if (err)
+    return __hurd_fail (err);
+  return 0;
+}