tools/reorder/rseed.c@97036ab72558 (annotated)
tools/reorder/rseed.c
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | /* |
| michael@0 | 6 | |
| michael@0 | 7 | A program that reads /dev/random to produce a seed for srand(3). |
| michael@0 | 8 | |
| michael@0 | 9 | */ |
| michael@0 | 10 | |
| michael@0 | 11 | #include <stdio.h> |
| michael@0 | 12 | #include <fcntl.h> |
| michael@0 | 13 | |
| michael@0 | 14 | int |
| michael@0 | 15 | main(int argc, char *argv[]) |
| michael@0 | 16 | { |
| michael@0 | 17 | int fd, ok, seed = 0; |
| michael@0 | 18 | |
| michael@0 | 19 | fd = open("/dev/random", O_RDONLY); |
| michael@0 | 20 | if (fd < 0) { |
| michael@0 | 21 | perror("/dev/random"); |
| michael@0 | 22 | return 1; |
| michael@0 | 23 | } |
| michael@0 | 24 | |
| michael@0 | 25 | ok = read(fd, &seed, sizeof seed); |
| michael@0 | 26 | if (ok > 0) |
| michael@0 | 27 | printf("%d\n", seed); |
| michael@0 | 28 | else |
| michael@0 | 29 | perror("/dev/random"); |
| michael@0 | 30 | |
| michael@0 | 31 | close(fd); |
| michael@0 | 32 | return 0; |
| michael@0 | 33 | } |
