The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/tools/reorder/rseed.c	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,33 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +/*
     1.9 +
    1.10 +  A program that reads /dev/random to produce a seed for srand(3).
    1.11 +
    1.12 + */
    1.13 +
    1.14 +#include <stdio.h>
    1.15 +#include <fcntl.h>
    1.16 +
    1.17 +int
    1.18 +main(int argc, char *argv[])
    1.19 +{
    1.20 +    int fd, ok, seed = 0;
    1.21 +
    1.22 +    fd = open("/dev/random", O_RDONLY);
    1.23 +    if (fd < 0) {
    1.24 +        perror("/dev/random");
    1.25 +        return 1;
    1.26 +    }
    1.27 +
    1.28 +    ok = read(fd, &seed, sizeof seed);
    1.29 +    if (ok > 0)
    1.30 +        printf("%d\n", seed);
    1.31 +    else
    1.32 +        perror("/dev/random");
    1.33 +
    1.34 +    close(fd);
    1.35 +    return 0;
    1.36 +}