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db11c38c4d
2001-01-19 Mark Kettenis <kettenis@gnu.org> * sysdeps/mach/hurd/chroot.c (chroot): Revert 1999-02-27 changes, but change looking up the initial directory port in a similar way as done by _hurd_change_directory_port_from_name. * hurd/fchroot.c (fchroot): Likewise.
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/* Copyright (C) 1999, 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <unistd.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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#include <hurd/port.h>
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/* Change the current root directory to FD. */
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int
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fchroot (int fd)
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{
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error_t err;
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file_t dir;
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err = HURD_DPORT_USE (fd,
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({
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dir = __file_name_lookup_under (port, ".", 0, 0);
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dir == MACH_PORT_NULL ? errno : 0;
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}));
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if (! err)
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{
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file_t root;
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/* Prevent going through DIR's .. */
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err = __file_reparent (dir, MACH_PORT_NULL, &root);
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__mach_port_deallocate (__mach_task_self (), dir);
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if (! err)
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_hurd_port_set (&_hurd_ports[INIT_PORT_CRDIR], root);
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}
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return err ? __hurd_fail (err) : 0;
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}
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