| 1 | /* Copyright (C) 1993-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <hurd.h> |
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| 19 | |
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| 20 | /* The program might set these if it is the initial task |
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| 21 | bootstrapped by the microkernel. */ |
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| 22 | |
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| 23 | mach_port_t _hurd_host_priv, _hurd_device_master; |
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| 24 | |
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| 25 | |
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| 26 | kern_return_t |
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| 27 | __get_privileged_ports (mach_port_t *host_priv_ptr, |
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| 28 | device_t *device_master_ptr) |
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| 29 | { |
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| 30 | if ((host_priv_ptr && _hurd_host_priv == MACH_PORT_NULL) |
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| 31 | || (device_master_ptr && _hurd_device_master == MACH_PORT_NULL)) |
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| 32 | { |
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| 33 | error_t err; |
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| 34 | |
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| 35 | if (_hurd_ports) |
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| 36 | /* We have gotten some initial ports, so perhaps |
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| 37 | we have a proc server to talk to. */ |
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| 38 | err = __USEPORT (PROC, __proc_getprivports (port, |
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| 39 | &_hurd_host_priv, |
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| 40 | &_hurd_device_master)); |
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| 41 | else |
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| 42 | return MACH_SEND_INVALID_DEST; |
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| 43 | |
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| 44 | if (err) |
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| 45 | return err; |
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| 46 | } |
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| 47 | |
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| 48 | if (host_priv_ptr) |
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| 49 | { |
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| 50 | error_t err = _hurd_host_priv == MACH_PORT_NULL ? 0 |
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| 51 | : __mach_port_mod_refs (mach_task_self (), |
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| 52 | _hurd_host_priv, MACH_PORT_RIGHT_SEND, +1); |
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| 53 | if (err) |
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| 54 | return err; |
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| 55 | *host_priv_ptr = _hurd_host_priv; |
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| 56 | } |
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| 57 | |
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| 58 | if (device_master_ptr) |
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| 59 | { |
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| 60 | error_t err = _hurd_device_master == MACH_PORT_NULL ? 0 |
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| 61 | : __mach_port_mod_refs (mach_task_self (), |
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| 62 | _hurd_device_master, MACH_PORT_RIGHT_SEND, +1); |
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| 63 | if (err) |
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| 64 | return err; |
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| 65 | *device_master_ptr = _hurd_device_master; |
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| 66 | } |
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| 67 | |
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| 68 | return KERN_SUCCESS; |
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| 69 | } |
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| 70 | weak_alias (__get_privileged_ports, get_privileged_ports) |
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| 71 | |
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