Revision 1108,
1.2 KB
checked in by daisuke, 14 years ago
(diff) |
import initscripts-8.90.6 from internal cvs repository
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1 | /* Copyright (C) 2003 Red Hat, Inc. |
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2 | * |
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3 | * This program is free software; you can redistribute it and/or modify |
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4 | * it under the terms of the GNU General Public License, version 2, |
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5 | * as published by the Free Software Foundation. |
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6 | * |
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7 | * This program is distributed in the hope that it will be useful, |
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8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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10 | * GNU General Public License for more details. |
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11 | * |
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12 | * You should have received a copy of the GNU General Public License |
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13 | * along with this program; if not, write to the Free Software |
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14 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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15 | * |
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16 | */ |
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17 | |
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18 | #include <fcntl.h> |
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19 | #include <stdlib.h> |
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20 | #include <time.h> |
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21 | #include <unistd.h> |
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22 | #include <sys/stat.h> |
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23 | int |
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24 | main (void) |
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25 | { |
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26 | struct stat st; |
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27 | long int n; |
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28 | if (stat ("/etc/hostid", &st) == 0 && S_ISREG (st.st_mode) |
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29 | && st.st_size >= sizeof (n)) |
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30 | return 0; |
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31 | int fd = open ("/dev/random", O_RDONLY); |
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32 | if (fd == -1 || read (fd, &n, sizeof (n)) != sizeof (n)) |
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33 | { |
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34 | srand48 ((long int) time (NULL) ^ (long int) getpid ()); |
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35 | n = lrand48 (); |
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36 | } |
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37 | return sethostid ((int32_t)n); |
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38 | } |
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