lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1994-2015 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 <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 | } |