| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1993-2016 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.h> |
| 19 | |
| 20 | /* The program might set these if it is the initial task |
| 21 | bootstrapped by the microkernel. */ |
| 22 | |
| 23 | mach_port_t _hurd_host_priv, _hurd_device_master; |
| 24 | |
| 25 | |
| 26 | kern_return_t |
| 27 | __get_privileged_ports (mach_port_t *host_priv_ptr, |
| 28 | device_t *device_master_ptr) |
| 29 | { |
| 30 | if ((host_priv_ptr && _hurd_host_priv == MACH_PORT_NULL) |
| 31 | || (device_master_ptr && _hurd_device_master == MACH_PORT_NULL)) |
| 32 | { |
| 33 | error_t err; |
| 34 | |
| 35 | if (_hurd_ports) |
| 36 | /* We have gotten some initial ports, so perhaps |
| 37 | we have a proc server to talk to. */ |
| 38 | err = __USEPORT (PROC, __proc_getprivports (port, |
| 39 | &_hurd_host_priv, |
| 40 | &_hurd_device_master)); |
| 41 | else |
| 42 | return MACH_SEND_INVALID_DEST; |
| 43 | |
| 44 | if (err) |
| 45 | return err; |
| 46 | } |
| 47 | |
| 48 | if (host_priv_ptr) |
| 49 | { |
| 50 | error_t err = _hurd_host_priv == MACH_PORT_NULL ? 0 |
| 51 | : __mach_port_mod_refs (mach_task_self (), |
| 52 | _hurd_host_priv, MACH_PORT_RIGHT_SEND, +1); |
| 53 | if (err) |
| 54 | return err; |
| 55 | *host_priv_ptr = _hurd_host_priv; |
| 56 | } |
| 57 | |
| 58 | if (device_master_ptr) |
| 59 | { |
| 60 | error_t err = _hurd_device_master == MACH_PORT_NULL ? 0 |
| 61 | : __mach_port_mod_refs (mach_task_self (), |
| 62 | _hurd_device_master, MACH_PORT_RIGHT_SEND, +1); |
| 63 | if (err) |
| 64 | return err; |
| 65 | *device_master_ptr = _hurd_device_master; |
| 66 | } |
| 67 | |
| 68 | return KERN_SUCCESS; |
| 69 | } |
| 70 | weak_alias (__get_privileged_ports, get_privileged_ports) |