| harvest.c (62969) | harvest.c (63771) |
|---|---|
| 1/*- 2 * Copyright (c) 2000 Mark R V Murray 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * | 1/*- 2 * Copyright (c) 2000 Mark R V Murray 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * |
| 26 * $FreeBSD: head/sys/dev/random/harvest.c 62969 2000-07-11 19:37:25Z markm $ | 26 * $FreeBSD: head/sys/dev/random/harvest.c 63771 2000-07-23 11:08:16Z markm $ |
| 27 */ 28 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/types.h> 32#include <sys/queue.h> 33#include <sys/linker.h> 34#include <sys/libkern.h> 35#include <sys/mbuf.h> 36#include <sys/random.h> 37#include <sys/time.h> 38#include <crypto/blowfish/blowfish.h> 39 40#include <dev/randomdev/yarrow.h> 41 | 27 */ 28 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/types.h> 32#include <sys/queue.h> 33#include <sys/linker.h> 34#include <sys/libkern.h> 35#include <sys/mbuf.h> 36#include <sys/random.h> 37#include <sys/time.h> 38#include <crypto/blowfish/blowfish.h> 39 40#include <dev/randomdev/yarrow.h> 41 |
| 42/* hold the address of the routine which is actually called if */ 43/* the ramdomdev is loaded */ | 42/* hold the address of the routine which is actually called if 43 * the ramdomdev is loaded 44 */ |
| 44static void (*reap)(struct timespec *, u_int64_t, u_int, u_int, u_int) = NULL; 45 46/* Initialise the harvester at load time */ 47void 48random_init_harvester(void (*reaper)(struct timespec *, u_int64_t, u_int, u_int, u_int)) 49{ 50 reap = reaper; 51} 52 53/* Deinitialise the harvester at unload time */ 54void 55random_deinit_harvester(void) 56{ 57 reap = NULL; 58} 59 | 45static void (*reap)(struct timespec *, u_int64_t, u_int, u_int, u_int) = NULL; 46 47/* Initialise the harvester at load time */ 48void 49random_init_harvester(void (*reaper)(struct timespec *, u_int64_t, u_int, u_int, u_int)) 50{ 51 reap = reaper; 52} 53 54/* Deinitialise the harvester at unload time */ 55void 56random_deinit_harvester(void) 57{ 58 reap = NULL; 59} 60 |
| 60/* Entropy harvesting routine. This is supposed to be fast; do */ 61/* not do anything slow in here! */ 62/* Implemented as in indirect call to allow non-inclusion of */ 63/* the entropy device. */ | 61/* Entropy harvesting routine. This is supposed to be fast; do 62 * not do anything slow in here! 63 * Implemented as in indirect call to allow non-inclusion of 64 * the entropy device. 65 */ |
| 64void | 66void |
| 65random_harvest(u_int64_t entropy, u_int bits, u_int frac, u_int source) | 67random_harvest(u_int64_t entropy, u_int bits, u_int frac, u_int origin) |
| 66{ | 68{ |
| 67 struct timespec nanotime; | 69 struct timespec timebuf; |
| 68 69 if (reap) { | 70 71 if (reap) { |
| 70 getnanotime(&nanotime); 71 (*reap)(&nanotime, entropy, bits, frac, source); | 72 nanotime(&timebuf); 73 (*reap)(&timebuf, entropy, bits, frac, origin); |
| 72 } 73} | 74 } 75} |