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35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <unistd.h>
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#include <hurd.h>
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#include "hurdhost.h"
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/* Return the current machine's Internet number. */
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long int
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gethostid (void)
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{
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/* The hostid is just the contents of the file /etc/hostid,
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kept as text of hexadecimal digits. */
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/* XXX this is supposed to come from the hardware serial number */
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char buf[8];
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ssize_t n = _hurd_get_host_config ("/etc/hostid", buf, sizeof buf);
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if (n < 0)
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return -1;
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return strtol (buf, NULL, 16);
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}
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