diff options
Diffstat (limited to 'sys/dev/randomdev/randomdev.c')
| -rw-r--r-- | sys/dev/randomdev/randomdev.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/sys/dev/randomdev/randomdev.c b/sys/dev/randomdev/randomdev.c deleted file mode 100644 index d6796ef5b187..000000000000 --- a/sys/dev/randomdev/randomdev.c +++ /dev/null @@ -1,175 +0,0 @@ -/*- - * Copyright (c) 2000 Mark R V Murray - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer - * in this position and unchanged. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/queue.h> -#include <sys/systm.h> -#include <sys/conf.h> -#include <sys/fcntl.h> -#include <sys/uio.h> -#include <sys/kernel.h> -#include <sys/malloc.h> -#include <sys/module.h> -#include <sys/bus.h> -#include <sys/proc.h> -#include <sys/random.h> -#include <machine/bus.h> -#include <machine/resource.h> -#include <sys/sysctl.h> -#include <crypto/blowfish/blowfish.h> - -#include <dev/randomdev/hash.h> -#include <dev/randomdev/yarrow.h> - -static d_open_t random_open; -static d_read_t random_read; -static d_write_t random_write; -static d_ioctl_t random_ioctl; - -#define CDEV_MAJOR 2 -#define RANDOM_MINOR 3 -#define URANDOM_MINOR 4 - -static struct cdevsw random_cdevsw = { - /* open */ random_open, - /* close */ (d_close_t *)nullop, - /* read */ random_read, - /* write */ random_write, - /* ioctl */ random_ioctl, - /* poll */ nopoll, - /* mmap */ nommap, - /* strategy */ nostrategy, - /* name */ "random", - /* maj */ CDEV_MAJOR, - /* dump */ nodump, - /* psize */ nopsize, - /* flags */ 0, - /* bmaj */ -1 -}; - -/* For use with make_dev(9)/destroy_dev(9). */ -static dev_t random_dev; -static dev_t urandom_dev; /* XXX Temporary */ - -SYSCTL_NODE(_kern, OID_AUTO, random, CTLFLAG_RW, 0, "Random Number Generator"); -SYSCTL_NODE(_kern_random, OID_AUTO, yarrow, CTLFLAG_RW, 0, "Yarrow Parameters"); -SYSCTL_INT(_kern_random_yarrow, OID_AUTO, gengateinterval, CTLFLAG_RW, - &random_state.gengateinterval, 10, "Generator Gate Interval"); -SYSCTL_INT(_kern_random_yarrow, OID_AUTO, bins, CTLFLAG_RW, - &random_state.bins, 10, "Execution time tuner"); -SYSCTL_INT(_kern_random_yarrow, OID_AUTO, fastthresh, CTLFLAG_RW, - &random_state.pool[0].thresh, 100, "Fast pool reseed threshhold"); -SYSCTL_INT(_kern_random_yarrow, OID_AUTO, slowthresh, CTLFLAG_RW, - &random_state.pool[1].thresh, 160, "Slow pool reseed threshhold"); -SYSCTL_INT(_kern_random_yarrow, OID_AUTO, slowoverthresh, CTLFLAG_RW, - &random_state.slowoverthresh, 2, "Slow pool over-threshhold reseed"); - -static int -random_open(dev_t dev, int flags, int fmt, struct proc *p) -{ - if ((flags & FWRITE) && (securelevel > 0 || suser(p))) - return EPERM; - else - return 0; -} - -static int -random_read(dev_t dev, struct uio *uio, int flag) -{ - u_int c, ret; - int error = 0; - void *random_buf; - - c = min(uio->uio_resid, PAGE_SIZE); - random_buf = (void *)malloc(c, M_TEMP, M_WAITOK); - while (uio->uio_resid > 0 && error == 0) { - ret = read_random(random_buf, c); - error = uiomove(random_buf, ret, uio); - } - free(random_buf, M_TEMP); - return error; -} - -static int -random_write(dev_t dev, struct uio *uio, int flag) -{ - u_int c; - int error = 0; - void *random_buf; - - random_buf = (void *)malloc(PAGE_SIZE, M_TEMP, M_WAITOK); - while (uio->uio_resid > 0) { - c = min(uio->uio_resid, PAGE_SIZE); - error = uiomove(random_buf, c, uio); - if (error) - break; - write_random(random_buf, c); - } - free(random_buf, M_TEMP); - return error; -} - -static int -random_ioctl(dev_t dev, u_long cmd, caddr_t addr, int flags, struct proc *p) -{ - return ENOTTY; -} - -static int -random_modevent(module_t mod, int type, void *data) -{ - int error; - - switch(type) { - case MOD_LOAD: - error = random_init(); - if (error != 0) - return error; - if (bootverbose) - printf("random: <entropy source>\n"); - random_dev = make_dev(&random_cdevsw, RANDOM_MINOR, UID_ROOT, - GID_WHEEL, 0666, "random"); - urandom_dev = make_dev(&random_cdevsw, URANDOM_MINOR, UID_ROOT, - GID_WHEEL, 0666, "urandom"); /* XXX Temporary */ - return 0; - - case MOD_UNLOAD: - random_deinit(); - destroy_dev(random_dev); - destroy_dev(urandom_dev); /* XXX Temporary */ - return 0; - - case MOD_SHUTDOWN: - return 0; - - default: - return EOPNOTSUPP; - } -} - -DEV_MODULE(random, random_modevent, NULL); |