| 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 <unistd.h> |
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| 19 | #include <hurd.h> |
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| 20 | #include "hurdhost.h" |
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| 21 | #include <_itoa.h> |
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| 22 | |
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| 23 | /* Set the current machine's Internet number to ID. |
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| 24 | This call is restricted to the super-user. */ |
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| 25 | /* XXX should be __sethostid? |
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| 26 | isn't hostid supposed to be hardwired and unchangeable? */ |
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| 27 | int |
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| 28 | sethostid (long int id) |
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| 29 | { |
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| 30 | char buf[8], *bp; |
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| 31 | ssize_t n; |
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| 32 | |
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| 33 | /* The hostid is kept in the file /etc/hostid, |
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| 34 | eight characters of upper-case hexadecimal. */ |
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| 35 | |
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| 36 | bp = _itoa_word (value: id, buflim: &buf[sizeof buf], base: 16, upper_case: 1); |
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| 37 | while (bp > buf) |
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| 38 | *--bp = '0'; |
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| 39 | |
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| 40 | n = _hurd_set_host_config ("/etc/hostid" , buf, sizeof buf); |
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| 41 | return n < 0 ? -1 : 0; |
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| 42 | } |
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| 43 | |
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