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1/* Copyright (C) 1999-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#include <unistd.h>
19
20#include <hurd.h>
21#include <hurd/fd.h>
22#include <hurd/port.h>
23
24/* Change the current root directory to FD. */
25int
26fchroot (int fd)
27{
28 error_t err;
29 file_t dir;
30
31 err = HURD_DPORT_USE (fd,
32 ({
33 dir = __file_name_lookup_under (port, ".", 0, 0);
34 dir == MACH_PORT_NULL ? errno : 0;
35 }));
36
37 if (! err)
38 {
39 file_t root;
40
41 /* Prevent going through DIR's .. */
42 err = __file_reparent (dir, MACH_PORT_NULL, &root);
43 __mach_port_deallocate (__mach_task_self (), dir);
44 if (! err)
45 _hurd_port_set (&_hurd_ports[INIT_PORT_CRDIR], root);
46 }
47
48 return err ? __hurd_fail (err) : 0;
49}
50

Warning: That file was not part of the compilation database. It may have many parsing errors.