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568035b7 | 1 | /* Copyright (C) 1994-2013 Free Software Foundation, Inc. |
c84142e8 UD |
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 | |
41bdb6e2 AJ |
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. | |
c84142e8 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
c84142e8 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 RM |
17 | |
18 | #include <hurd/fd.h> | |
19 | ||
20 | error_t | |
21 | _hurd_fd_close (struct hurd_fd *fd) | |
22 | { | |
23 | error_t err; | |
24 | ||
25 | HURD_CRITICAL_BEGIN; | |
26 | ||
27 | __spin_lock (&fd->port.lock); | |
28 | if (fd->port.port == MACH_PORT_NULL) | |
29 | { | |
30 | __spin_unlock (&fd->port.lock); | |
31 | err = EBADF; | |
32 | } | |
33 | else | |
34 | { | |
35 | /* Clear the descriptor's port cells. | |
36 | This deallocates the ports if noone else is still using them. */ | |
37 | _hurd_port_set (&fd->ctty, MACH_PORT_NULL); | |
38 | _hurd_port_locked_set (&fd->port, MACH_PORT_NULL); | |
39 | err = 0; | |
40 | } | |
41 | ||
42 | HURD_CRITICAL_END; | |
43 | ||
44 | return err; | |
45 | } |