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34 lines
655 B
C
34 lines
655 B
C
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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A program that reads /dev/random to produce a seed for srand(3).
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*/
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#include <stdio.h>
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#include <fcntl.h>
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int
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main(int argc, char *argv[])
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{
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int fd, ok, seed = 0;
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fd = open("/dev/random", O_RDONLY);
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if (fd < 0) {
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perror("/dev/random");
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return 1;
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}
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ok = read(fd, &seed, sizeof seed);
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if (ok > 0)
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printf("%d\n", seed);
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else
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perror("/dev/random");
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close(fd);
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return 0;
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}
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