tools/reorder/rseed.c
author Felipe Gomes <felipc@gmail.com>
Tue, 12 Jun 2012 17:47:40 -0300
changeset 99917 621324aea1931c103f34bef2537c64e0829317b4
parent 98529 f4157e8c410708d76703f19e4dfb61859bfe32d8
permissions -rw-r--r--
Bug 761516. Rename webapprt/linux to webapprt/gtk2 as we are building for all gtk2 platforms. r=marco a=gavin

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*

  A program that reads /dev/random to produce a seed for srand(3).

 */

#include <stdio.h>
#include <fcntl.h>

int
main(int argc, char *argv[])
{
    int fd, ok, seed = 0;

    fd = open("/dev/random", O_RDONLY);
    if (fd < 0) {
        perror("/dev/random");
        return 1;
    }

    ok = read(fd, &seed, sizeof seed);
    if (ok > 0)
        printf("%d\n", seed);
    else
        perror("/dev/random");

    close(fd);
    return 0;
}