/* Copyright (C) 1992,94,95,96,97,98,2001,02 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/socket.h>#include <hurd.h>#include <hurd/fd.h>#include <hurd/socket.h>#include <hurd/paths.h>#include <fcntl.h>#include <stddef.h>#include <hurd/ifsock.h>#include <sys/un.h>#include <string.h>/* Give the socket FD the local address ADDR (which is LEN bytes long).  */int__bind  (int fd, __CONST_SOCKADDR_ARG addrarg, socklen_t len){  addr_port_t aport;  error_t err;  const struct sockaddr_un *addr = addrarg.__sockaddr_un__;  if (addr->sun_family == AF_LOCAL)    {      /* For the local domain, we must create a node in the filesystem	 using the ifsock translator and then fetch the address from it.  */      file_t dir, node;      char name[len - offsetof (struct sockaddr_un, sun_path) + 1], *n;      strncpy (name, addr->sun_path, sizeof name - 1);      name[sizeof name - 1] = '\0'; /* Make sure */      dir = __file_name_split (name, &n);      if (dir == MACH_PORT_NULL)	return -1;      /* Create a new, unlinked node in the target directory.  */      err = __dir_mkfile (dir, O_CREAT, 0666 & ~_hurd_umask, &node);      if (! err)	{	  /* Set the node's translator to make it a local-domain socket.  */	  err = __file_set_translator (node,				       FS_TRANS_EXCL | FS_TRANS_SET,				       FS_TRANS_EXCL | FS_TRANS_SET, 0,				       _HURD_IFSOCK, sizeof _HURD_IFSOCK,				       MACH_PORT_NULL,				       MACH_MSG_TYPE_COPY_SEND);	  if (! err)	    {	      /* Link the node, now a socket, into the target directory.  */	      err = __dir_link (dir, node, n, 1);	      if (err == EEXIST)		err = EADDRINUSE;	    }	  __mach_port_deallocate (__mach_task_self (), node);	  if (! err)	    {	      /* Get a port to the ifsock translator.  */	      file_t ifsock = __file_name_lookup_under (dir, n, 0, 0);	      if (ifsock == MACH_PORT_NULL)		{		  err = errno;		  /* If we failed, get rid of the node we created.  */		  __dir_unlink (dir, n);		}	      else		{		  /* Get the address port.  */		  err = __ifsock_getsockaddr (ifsock, &aport);		  if (err == MIG_BAD_ID || err == EOPNOTSUPP)		    /* We are not talking to /hurd/ifsock.  Probably		       someone came in after we linked our node, unlinked		       it, and replaced it with a different node, before we		       did our lookup.  Treat it as if our link had failed		       with EEXIST.  */		    err = EADDRINUSE;		}	      __mach_port_deallocate (__mach_task_self (), ifsock);	    }	}      __mach_port_deallocate (__mach_task_self (), dir);      if (err)	return __hurd_fail (err);    }  else    err = EIEIO;  err = HURD_DPORT_USE (fd,			({			  if (err)			    err = __socket_create_address (port,							   addr->sun_family,							   (char *) addr, len,							   &aport);			  if (! err)			    {			      err = __socket_bind (port, aport);			      __mach_port_deallocate (__mach_task_self (),						      aport);			    }			  err;			}));  return err ? __hurd_dfail (fd, err) : 0;}weak_alias (__bind, bind)