| /* Copyright (C) 1991-2014 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 Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <hurd.h> |
| |
| /* This is initialized in dtable.c when that gets linked in. |
| If dtable.c is not linked in, it will be zero. */ |
| static file_t (*_default_hurd_getdport_fn) (int fd) = 0; |
| weak_alias (_default_hurd_getdport_fn, _hurd_getdport_fn) |
| |
| file_t |
| __getdport (int fd) |
| { |
| if (_hurd_getdport_fn) |
| /* dtable.c has defined the function to fetch a port from the real file |
| descriptor table. */ |
| return (*_hurd_getdport_fn) (fd); |
| |
| /* getdport is the only use of file descriptors, |
| so we don't bother allocating a real table. */ |
| |
| if (_hurd_init_dtable == NULL) |
| { |
| /* Never had a descriptor table. */ |
| errno = EBADF; |
| return MACH_PORT_NULL; |
| } |
| |
| if (fd < 0 || (unsigned int) fd > _hurd_init_dtablesize || |
| _hurd_init_dtable[fd] == MACH_PORT_NULL) |
| { |
| errno = EBADF; |
| return MACH_PORT_NULL; |
| } |
| else |
| { |
| __mach_port_mod_refs (__mach_task_self (), _hurd_init_dtable[fd], |
| MACH_PORT_RIGHT_SEND, 1); |
| return _hurd_init_dtable[fd]; |
| } |
| } |
| |
| weak_alias (__getdport, getdport) |
