glibc/hurd/hurdfchdir.c
Roland McGrath e8f51d56d4 1999-02-27 Roland McGrath <roland@baalperazim.frob.com>
* sysdeps/mach/getsysstats.c (__get_nprocs_conf, __get_nprocs,
	__get_phys_pages): Cast &HBI to silence warning.

	* hurd/Makefile (routines): Add hurdchdir and hurdfchdir.
	* hurd/hurdchdir.c: New file.
	* hurd/hurdfchdir.c: New file.
	* sysdeps/mach/hurd/chroot.c: Call
	_hurd_change_directory_port_from_name to do the work.
	* sysdeps/mach/hurd/chdir.c: Likewise.
	* sysdeps/mach/hurd/fchdir.c: Call
	_hurd_change_directory_port_from_fd to do the work.
	* hurd/fchroot.c: Likewise.
	* hurd/hurd.h: Declare them.
1999-02-27 20:06:34 +00:00

44 lines
1.4 KiB
C

/* Change a port cell to a directory in an open file descriptor.
Copyright (C) 1999 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 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <unistd.h>
#include <hurd.h>
#include <hurd/port.h>
#include <hurd/fd.h>
#include <fcntl.h>
int
_hurd_change_directory_port_from_fd (struct hurd_port *portcell, int fd)
{
error_t err;
file_t dir;
err = HURD_DPORT_USE (fd,
({
dir = __file_name_lookup_under (port, ".", 0, 0);
dir == MACH_PORT_NULL ? errno : 0;
}));
if (! err)
_hurd_port_set (portcell, dir);
return err ? __hurd_fail (err) : 0;
}