231f25ce8f
No functional change. This should ease the transition from an integer session identifier model to an opaque pointer model.
1488 lines
34 KiB
C
1488 lines
34 KiB
C
/* $OpenBSD: cryptodev.c,v 1.52 2002/06/19 07:22:46 deraadt Exp $ */
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/*-
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* Copyright (c) 2001 Theo de Raadt
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* Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
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* Copyright (c) 2014 The FreeBSD Foundation
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* All rights reserved.
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*
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* Portions of this software were developed by John-Mark Gurney
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* under sponsorship of the FreeBSD Foundation and
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* Rubicon Communications, LLC (Netgate).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Effort sponsored in part by the Defense Advanced Research Projects
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* Agency (DARPA) and Air Force Research Laboratory, Air Force
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* Materiel Command, USAF, under agreement number F30602-01-2-0537.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/sysctl.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/errno.h>
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#include <sys/uio.h>
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#include <sys/random.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/fcntl.h>
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#include <sys/bus.h>
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#include <sys/user.h>
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#include <sys/sdt.h>
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#include <opencrypto/cryptodev.h>
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#include <opencrypto/xform.h>
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SDT_PROVIDER_DECLARE(opencrypto);
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SDT_PROBE_DEFINE1(opencrypto, dev, ioctl, error, "int"/*line number*/);
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#ifdef COMPAT_FREEBSD32
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#include <sys/mount.h>
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#include <compat/freebsd32/freebsd32.h>
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struct session_op32 {
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u_int32_t cipher;
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u_int32_t mac;
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u_int32_t keylen;
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u_int32_t key;
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int mackeylen;
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u_int32_t mackey;
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u_int32_t ses;
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};
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struct session2_op32 {
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u_int32_t cipher;
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u_int32_t mac;
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u_int32_t keylen;
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u_int32_t key;
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int mackeylen;
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u_int32_t mackey;
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u_int32_t ses;
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int crid;
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int pad[4];
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};
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struct crypt_op32 {
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u_int32_t ses;
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u_int16_t op;
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u_int16_t flags;
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u_int len;
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u_int32_t src, dst;
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u_int32_t mac;
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u_int32_t iv;
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};
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struct crparam32 {
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u_int32_t crp_p;
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u_int crp_nbits;
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};
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struct crypt_kop32 {
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u_int crk_op;
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u_int crk_status;
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u_short crk_iparams;
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u_short crk_oparams;
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u_int crk_crid;
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struct crparam32 crk_param[CRK_MAXPARAM];
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};
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struct cryptotstat32 {
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struct timespec32 acc;
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struct timespec32 min;
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struct timespec32 max;
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u_int32_t count;
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};
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struct cryptostats32 {
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u_int32_t cs_ops;
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u_int32_t cs_errs;
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u_int32_t cs_kops;
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u_int32_t cs_kerrs;
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u_int32_t cs_intrs;
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u_int32_t cs_rets;
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u_int32_t cs_blocks;
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u_int32_t cs_kblocks;
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struct cryptotstat32 cs_invoke;
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struct cryptotstat32 cs_done;
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struct cryptotstat32 cs_cb;
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struct cryptotstat32 cs_finis;
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};
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#define CIOCGSESSION32 _IOWR('c', 101, struct session_op32)
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#define CIOCCRYPT32 _IOWR('c', 103, struct crypt_op32)
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#define CIOCKEY32 _IOWR('c', 104, struct crypt_kop32)
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#define CIOCGSESSION232 _IOWR('c', 106, struct session2_op32)
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#define CIOCKEY232 _IOWR('c', 107, struct crypt_kop32)
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static void
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session_op_from_32(const struct session_op32 *from, struct session_op *to)
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{
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CP(*from, *to, cipher);
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CP(*from, *to, mac);
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CP(*from, *to, keylen);
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PTRIN_CP(*from, *to, key);
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CP(*from, *to, mackeylen);
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PTRIN_CP(*from, *to, mackey);
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CP(*from, *to, ses);
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}
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static void
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session2_op_from_32(const struct session2_op32 *from, struct session2_op *to)
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{
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session_op_from_32((const struct session_op32 *)from,
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(struct session_op *)to);
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CP(*from, *to, crid);
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}
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static void
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session_op_to_32(const struct session_op *from, struct session_op32 *to)
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{
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CP(*from, *to, cipher);
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CP(*from, *to, mac);
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CP(*from, *to, keylen);
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PTROUT_CP(*from, *to, key);
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CP(*from, *to, mackeylen);
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PTROUT_CP(*from, *to, mackey);
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CP(*from, *to, ses);
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}
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static void
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session2_op_to_32(const struct session2_op *from, struct session2_op32 *to)
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{
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session_op_to_32((const struct session_op *)from,
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(struct session_op32 *)to);
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CP(*from, *to, crid);
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}
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static void
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crypt_op_from_32(const struct crypt_op32 *from, struct crypt_op *to)
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{
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CP(*from, *to, ses);
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CP(*from, *to, op);
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CP(*from, *to, flags);
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CP(*from, *to, len);
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PTRIN_CP(*from, *to, src);
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PTRIN_CP(*from, *to, dst);
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PTRIN_CP(*from, *to, mac);
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PTRIN_CP(*from, *to, iv);
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}
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static void
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crypt_op_to_32(const struct crypt_op *from, struct crypt_op32 *to)
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{
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CP(*from, *to, ses);
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CP(*from, *to, op);
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CP(*from, *to, flags);
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CP(*from, *to, len);
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PTROUT_CP(*from, *to, src);
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PTROUT_CP(*from, *to, dst);
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PTROUT_CP(*from, *to, mac);
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PTROUT_CP(*from, *to, iv);
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}
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static void
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crparam_from_32(const struct crparam32 *from, struct crparam *to)
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{
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PTRIN_CP(*from, *to, crp_p);
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CP(*from, *to, crp_nbits);
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}
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static void
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crparam_to_32(const struct crparam *from, struct crparam32 *to)
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{
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PTROUT_CP(*from, *to, crp_p);
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CP(*from, *to, crp_nbits);
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}
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static void
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crypt_kop_from_32(const struct crypt_kop32 *from, struct crypt_kop *to)
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{
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int i;
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CP(*from, *to, crk_op);
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CP(*from, *to, crk_status);
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CP(*from, *to, crk_iparams);
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CP(*from, *to, crk_oparams);
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CP(*from, *to, crk_crid);
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for (i = 0; i < CRK_MAXPARAM; i++)
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crparam_from_32(&from->crk_param[i], &to->crk_param[i]);
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}
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static void
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crypt_kop_to_32(const struct crypt_kop *from, struct crypt_kop32 *to)
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{
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int i;
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CP(*from, *to, crk_op);
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CP(*from, *to, crk_status);
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CP(*from, *to, crk_iparams);
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CP(*from, *to, crk_oparams);
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CP(*from, *to, crk_crid);
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for (i = 0; i < CRK_MAXPARAM; i++)
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crparam_to_32(&from->crk_param[i], &to->crk_param[i]);
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}
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#endif
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struct csession {
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TAILQ_ENTRY(csession) next;
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crypto_session_t sid;
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u_int32_t ses;
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struct mtx lock; /* for op submission */
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u_int32_t cipher;
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struct enc_xform *txform;
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u_int32_t mac;
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struct auth_hash *thash;
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caddr_t key;
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int keylen;
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caddr_t mackey;
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int mackeylen;
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};
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struct cryptop_data {
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struct csession *cse;
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struct iovec iovec[1];
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struct uio uio;
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bool done;
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};
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struct fcrypt {
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TAILQ_HEAD(csessionlist, csession) csessions;
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int sesn;
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};
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static int cryptof_ioctl(struct file *, u_long, void *,
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struct ucred *, struct thread *);
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static int cryptof_stat(struct file *, struct stat *,
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struct ucred *, struct thread *);
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static int cryptof_close(struct file *, struct thread *);
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static int cryptof_fill_kinfo(struct file *, struct kinfo_file *,
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struct filedesc *);
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static struct fileops cryptofops = {
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.fo_read = invfo_rdwr,
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.fo_write = invfo_rdwr,
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.fo_truncate = invfo_truncate,
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.fo_ioctl = cryptof_ioctl,
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.fo_poll = invfo_poll,
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.fo_kqfilter = invfo_kqfilter,
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.fo_stat = cryptof_stat,
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.fo_close = cryptof_close,
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.fo_chmod = invfo_chmod,
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.fo_chown = invfo_chown,
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.fo_sendfile = invfo_sendfile,
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.fo_fill_kinfo = cryptof_fill_kinfo,
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};
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static struct csession *csefind(struct fcrypt *, u_int);
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static int csedelete(struct fcrypt *, struct csession *);
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static struct csession *cseadd(struct fcrypt *, struct csession *);
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static struct csession *csecreate(struct fcrypt *, crypto_session_t, caddr_t,
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u_int64_t, caddr_t, u_int64_t, u_int32_t, u_int32_t, struct enc_xform *,
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struct auth_hash *);
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static int csefree(struct csession *);
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static int cryptodev_op(struct csession *, struct crypt_op *,
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struct ucred *, struct thread *td);
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static int cryptodev_aead(struct csession *, struct crypt_aead *,
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struct ucred *, struct thread *);
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static int cryptodev_key(struct crypt_kop *);
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static int cryptodev_find(struct crypt_find_op *);
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/*
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* Check a crypto identifier to see if it requested
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* a software device/driver. This can be done either
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* by device name/class or through search constraints.
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*/
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static int
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checkforsoftware(int *cridp)
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{
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int crid;
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crid = *cridp;
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if (!crypto_devallowsoft) {
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if (crid & CRYPTOCAP_F_SOFTWARE) {
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if (crid & CRYPTOCAP_F_HARDWARE) {
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*cridp = CRYPTOCAP_F_HARDWARE;
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return 0;
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}
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return EINVAL;
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}
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if ((crid & CRYPTOCAP_F_HARDWARE) == 0 &&
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(crypto_getcaps(crid) & CRYPTOCAP_F_HARDWARE) == 0)
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return EINVAL;
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}
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return 0;
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}
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/* ARGSUSED */
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static int
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cryptof_ioctl(
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struct file *fp,
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u_long cmd,
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void *data,
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struct ucred *active_cred,
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struct thread *td)
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{
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#define SES2(p) ((struct session2_op *)p)
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struct cryptoini cria, crie;
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struct fcrypt *fcr = fp->f_data;
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struct csession *cse;
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struct session_op *sop;
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struct crypt_op *cop;
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struct crypt_aead *caead;
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struct enc_xform *txform = NULL;
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struct auth_hash *thash = NULL;
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struct crypt_kop *kop;
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crypto_session_t sid;
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u_int32_t ses;
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int error = 0, crid;
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#ifdef COMPAT_FREEBSD32
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struct session2_op sopc;
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struct crypt_op copc;
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struct crypt_kop kopc;
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#endif
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switch (cmd) {
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case CIOCGSESSION:
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case CIOCGSESSION2:
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#ifdef COMPAT_FREEBSD32
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case CIOCGSESSION32:
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case CIOCGSESSION232:
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if (cmd == CIOCGSESSION32) {
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session_op_from_32(data, (struct session_op *)&sopc);
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sop = (struct session_op *)&sopc;
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} else if (cmd == CIOCGSESSION232) {
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session2_op_from_32(data, &sopc);
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sop = (struct session_op *)&sopc;
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} else
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#endif
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sop = (struct session_op *)data;
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switch (sop->cipher) {
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case 0:
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break;
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case CRYPTO_DES_CBC:
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txform = &enc_xform_des;
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break;
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case CRYPTO_3DES_CBC:
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txform = &enc_xform_3des;
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break;
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case CRYPTO_BLF_CBC:
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txform = &enc_xform_blf;
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break;
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case CRYPTO_CAST_CBC:
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txform = &enc_xform_cast5;
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break;
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case CRYPTO_SKIPJACK_CBC:
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txform = &enc_xform_skipjack;
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break;
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case CRYPTO_AES_CBC:
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txform = &enc_xform_rijndael128;
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break;
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case CRYPTO_AES_XTS:
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txform = &enc_xform_aes_xts;
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break;
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case CRYPTO_NULL_CBC:
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txform = &enc_xform_null;
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break;
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case CRYPTO_ARC4:
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txform = &enc_xform_arc4;
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break;
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case CRYPTO_CAMELLIA_CBC:
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txform = &enc_xform_camellia;
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break;
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case CRYPTO_AES_ICM:
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txform = &enc_xform_aes_icm;
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break;
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case CRYPTO_AES_NIST_GCM_16:
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txform = &enc_xform_aes_nist_gcm;
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break;
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case CRYPTO_CHACHA20:
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txform = &enc_xform_chacha20;
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break;
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default:
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CRYPTDEB("invalid cipher");
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SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
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return (EINVAL);
|
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}
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switch (sop->mac) {
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case 0:
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break;
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case CRYPTO_MD5_HMAC:
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thash = &auth_hash_hmac_md5;
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break;
|
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case CRYPTO_SHA1_HMAC:
|
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thash = &auth_hash_hmac_sha1;
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break;
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case CRYPTO_SHA2_224_HMAC:
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thash = &auth_hash_hmac_sha2_224;
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break;
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case CRYPTO_SHA2_256_HMAC:
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thash = &auth_hash_hmac_sha2_256;
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break;
|
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case CRYPTO_SHA2_384_HMAC:
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thash = &auth_hash_hmac_sha2_384;
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break;
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case CRYPTO_SHA2_512_HMAC:
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thash = &auth_hash_hmac_sha2_512;
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break;
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case CRYPTO_RIPEMD160_HMAC:
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thash = &auth_hash_hmac_ripemd_160;
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break;
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case CRYPTO_AES_128_NIST_GMAC:
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thash = &auth_hash_nist_gmac_aes_128;
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break;
|
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case CRYPTO_AES_192_NIST_GMAC:
|
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thash = &auth_hash_nist_gmac_aes_192;
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break;
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case CRYPTO_AES_256_NIST_GMAC:
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thash = &auth_hash_nist_gmac_aes_256;
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break;
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|
|
#ifdef notdef
|
|
case CRYPTO_MD5:
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thash = &auth_hash_md5;
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break;
|
|
#endif
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case CRYPTO_SHA1:
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thash = &auth_hash_sha1;
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break;
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case CRYPTO_SHA2_224:
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thash = &auth_hash_sha2_224;
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break;
|
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case CRYPTO_SHA2_256:
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thash = &auth_hash_sha2_256;
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break;
|
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case CRYPTO_SHA2_384:
|
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thash = &auth_hash_sha2_384;
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break;
|
|
case CRYPTO_SHA2_512:
|
|
thash = &auth_hash_sha2_512;
|
|
break;
|
|
|
|
case CRYPTO_NULL_HMAC:
|
|
thash = &auth_hash_null;
|
|
break;
|
|
|
|
case CRYPTO_BLAKE2B:
|
|
thash = &auth_hash_blake2b;
|
|
break;
|
|
case CRYPTO_BLAKE2S:
|
|
thash = &auth_hash_blake2s;
|
|
break;
|
|
|
|
default:
|
|
CRYPTDEB("invalid mac");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
|
|
bzero(&crie, sizeof(crie));
|
|
bzero(&cria, sizeof(cria));
|
|
|
|
if (txform) {
|
|
crie.cri_alg = txform->type;
|
|
crie.cri_klen = sop->keylen * 8;
|
|
if (sop->keylen > txform->maxkey ||
|
|
sop->keylen < txform->minkey) {
|
|
CRYPTDEB("invalid cipher parameters");
|
|
error = EINVAL;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
crie.cri_key = malloc(crie.cri_klen / 8,
|
|
M_XDATA, M_WAITOK);
|
|
if ((error = copyin(sop->key, crie.cri_key,
|
|
crie.cri_klen / 8))) {
|
|
CRYPTDEB("invalid key");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
goto bail;
|
|
}
|
|
if (thash)
|
|
crie.cri_next = &cria;
|
|
}
|
|
|
|
if (thash) {
|
|
cria.cri_alg = thash->type;
|
|
cria.cri_klen = sop->mackeylen * 8;
|
|
if (thash->keysize != 0 &&
|
|
sop->mackeylen > thash->keysize) {
|
|
CRYPTDEB("invalid mac key length");
|
|
error = EINVAL;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
if (cria.cri_klen) {
|
|
cria.cri_key = malloc(cria.cri_klen / 8,
|
|
M_XDATA, M_WAITOK);
|
|
if ((error = copyin(sop->mackey, cria.cri_key,
|
|
cria.cri_klen / 8))) {
|
|
CRYPTDEB("invalid mac key");
|
|
SDT_PROBE1(opencrypto, dev, ioctl,
|
|
error, __LINE__);
|
|
goto bail;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* NB: CIOCGSESSION2 has the crid */
|
|
if (cmd == CIOCGSESSION2
|
|
#ifdef COMPAT_FREEBSD32
|
|
|| cmd == CIOCGSESSION232
|
|
#endif
|
|
) {
|
|
crid = SES2(sop)->crid;
|
|
error = checkforsoftware(&crid);
|
|
if (error) {
|
|
CRYPTDEB("checkforsoftware");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
goto bail;
|
|
}
|
|
} else
|
|
crid = CRYPTOCAP_F_HARDWARE;
|
|
error = crypto_newsession(&sid, (txform ? &crie : &cria), crid);
|
|
if (error) {
|
|
CRYPTDEB("crypto_newsession");
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen,
|
|
cria.cri_key, cria.cri_klen, sop->cipher, sop->mac, txform,
|
|
thash);
|
|
|
|
if (cse == NULL) {
|
|
crypto_freesession(sid);
|
|
error = EINVAL;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
CRYPTDEB("csecreate");
|
|
goto bail;
|
|
}
|
|
sop->ses = cse->ses;
|
|
if (cmd == CIOCGSESSION2
|
|
#ifdef COMPAT_FREEBSD32
|
|
|| cmd == CIOCGSESSION232
|
|
#endif
|
|
) {
|
|
/* return hardware/driver id */
|
|
SES2(sop)->crid = CRYPTO_SESID2HID(cse->sid);
|
|
}
|
|
bail:
|
|
if (error) {
|
|
if (crie.cri_key)
|
|
free(crie.cri_key, M_XDATA);
|
|
if (cria.cri_key)
|
|
free(cria.cri_key, M_XDATA);
|
|
}
|
|
#ifdef COMPAT_FREEBSD32
|
|
else {
|
|
if (cmd == CIOCGSESSION32)
|
|
session_op_to_32(sop, data);
|
|
else if (cmd == CIOCGSESSION232)
|
|
session2_op_to_32((struct session2_op *)sop,
|
|
data);
|
|
}
|
|
#endif
|
|
break;
|
|
case CIOCFSESSION:
|
|
ses = *(u_int32_t *)data;
|
|
cse = csefind(fcr, ses);
|
|
if (cse == NULL) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
csedelete(fcr, cse);
|
|
error = csefree(cse);
|
|
break;
|
|
case CIOCCRYPT:
|
|
#ifdef COMPAT_FREEBSD32
|
|
case CIOCCRYPT32:
|
|
if (cmd == CIOCCRYPT32) {
|
|
cop = &copc;
|
|
crypt_op_from_32(data, cop);
|
|
} else
|
|
#endif
|
|
cop = (struct crypt_op *)data;
|
|
cse = csefind(fcr, cop->ses);
|
|
if (cse == NULL) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
error = cryptodev_op(cse, cop, active_cred, td);
|
|
#ifdef COMPAT_FREEBSD32
|
|
if (error == 0 && cmd == CIOCCRYPT32)
|
|
crypt_op_to_32(cop, data);
|
|
#endif
|
|
break;
|
|
case CIOCKEY:
|
|
case CIOCKEY2:
|
|
#ifdef COMPAT_FREEBSD32
|
|
case CIOCKEY32:
|
|
case CIOCKEY232:
|
|
#endif
|
|
if (!crypto_userasymcrypto) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EPERM); /* XXX compat? */
|
|
}
|
|
#ifdef COMPAT_FREEBSD32
|
|
if (cmd == CIOCKEY32 || cmd == CIOCKEY232) {
|
|
kop = &kopc;
|
|
crypt_kop_from_32(data, kop);
|
|
} else
|
|
#endif
|
|
kop = (struct crypt_kop *)data;
|
|
if (cmd == CIOCKEY
|
|
#ifdef COMPAT_FREEBSD32
|
|
|| cmd == CIOCKEY32
|
|
#endif
|
|
) {
|
|
/* NB: crypto core enforces s/w driver use */
|
|
kop->crk_crid =
|
|
CRYPTOCAP_F_HARDWARE | CRYPTOCAP_F_SOFTWARE;
|
|
}
|
|
mtx_lock(&Giant);
|
|
error = cryptodev_key(kop);
|
|
mtx_unlock(&Giant);
|
|
#ifdef COMPAT_FREEBSD32
|
|
if (cmd == CIOCKEY32 || cmd == CIOCKEY232)
|
|
crypt_kop_to_32(kop, data);
|
|
#endif
|
|
break;
|
|
case CIOCASYMFEAT:
|
|
if (!crypto_userasymcrypto) {
|
|
/*
|
|
* NB: if user asym crypto operations are
|
|
* not permitted return "no algorithms"
|
|
* so well-behaved applications will just
|
|
* fallback to doing them in software.
|
|
*/
|
|
*(int *)data = 0;
|
|
} else {
|
|
error = crypto_getfeat((int *)data);
|
|
if (error)
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error,
|
|
__LINE__);
|
|
}
|
|
break;
|
|
case CIOCFINDDEV:
|
|
error = cryptodev_find((struct crypt_find_op *)data);
|
|
break;
|
|
case CIOCCRYPTAEAD:
|
|
caead = (struct crypt_aead *)data;
|
|
cse = csefind(fcr, caead->ses);
|
|
if (cse == NULL) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
error = cryptodev_aead(cse, caead, active_cred, td);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
break;
|
|
}
|
|
return (error);
|
|
#undef SES2
|
|
}
|
|
|
|
static int cryptodev_cb(struct cryptop *);
|
|
|
|
static struct cryptop_data *
|
|
cod_alloc(struct csession *cse, size_t len, struct thread *td)
|
|
{
|
|
struct cryptop_data *cod;
|
|
struct uio *uio;
|
|
|
|
cod = malloc(sizeof(struct cryptop_data), M_XDATA, M_WAITOK | M_ZERO);
|
|
|
|
cod->cse = cse;
|
|
uio = &cod->uio;
|
|
uio->uio_iov = cod->iovec;
|
|
uio->uio_iovcnt = 1;
|
|
uio->uio_resid = len;
|
|
uio->uio_segflg = UIO_SYSSPACE;
|
|
uio->uio_rw = UIO_WRITE;
|
|
uio->uio_td = td;
|
|
uio->uio_iov[0].iov_len = len;
|
|
uio->uio_iov[0].iov_base = malloc(len, M_XDATA, M_WAITOK);
|
|
return (cod);
|
|
}
|
|
|
|
static void
|
|
cod_free(struct cryptop_data *cod)
|
|
{
|
|
|
|
free(cod->uio.uio_iov[0].iov_base, M_XDATA);
|
|
free(cod, M_XDATA);
|
|
}
|
|
|
|
static int
|
|
cryptodev_op(
|
|
struct csession *cse,
|
|
struct crypt_op *cop,
|
|
struct ucred *active_cred,
|
|
struct thread *td)
|
|
{
|
|
struct cryptop_data *cod = NULL;
|
|
struct cryptop *crp = NULL;
|
|
struct cryptodesc *crde = NULL, *crda = NULL;
|
|
int error;
|
|
|
|
if (cop->len > 256*1024-4) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (E2BIG);
|
|
}
|
|
|
|
if (cse->txform) {
|
|
if (cop->len == 0 || (cop->len % cse->txform->blocksize) != 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
}
|
|
|
|
if (cse->thash)
|
|
cod = cod_alloc(cse, cop->len + cse->thash->hashsize, td);
|
|
else
|
|
cod = cod_alloc(cse, cop->len, td);
|
|
|
|
crp = crypto_getreq((cse->txform != NULL) + (cse->thash != NULL));
|
|
if (crp == NULL) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = ENOMEM;
|
|
goto bail;
|
|
}
|
|
|
|
if (cse->thash && cse->txform) {
|
|
if (cop->flags & COP_F_CIPHER_FIRST) {
|
|
crde = crp->crp_desc;
|
|
crda = crde->crd_next;
|
|
} else {
|
|
crda = crp->crp_desc;
|
|
crde = crda->crd_next;
|
|
}
|
|
} else if (cse->thash) {
|
|
crda = crp->crp_desc;
|
|
} else if (cse->txform) {
|
|
crde = crp->crp_desc;
|
|
} else {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
|
|
if ((error = copyin(cop->src, cod->uio.uio_iov[0].iov_base,
|
|
cop->len))) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
if (crda) {
|
|
crda->crd_skip = 0;
|
|
crda->crd_len = cop->len;
|
|
crda->crd_inject = cop->len;
|
|
|
|
crda->crd_alg = cse->mac;
|
|
crda->crd_key = cse->mackey;
|
|
crda->crd_klen = cse->mackeylen * 8;
|
|
}
|
|
|
|
if (crde) {
|
|
if (cop->op == COP_ENCRYPT)
|
|
crde->crd_flags |= CRD_F_ENCRYPT;
|
|
else
|
|
crde->crd_flags &= ~CRD_F_ENCRYPT;
|
|
crde->crd_len = cop->len;
|
|
crde->crd_inject = 0;
|
|
|
|
crde->crd_alg = cse->cipher;
|
|
crde->crd_key = cse->key;
|
|
crde->crd_klen = cse->keylen * 8;
|
|
}
|
|
|
|
crp->crp_ilen = cop->len;
|
|
crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM
|
|
| (cop->flags & COP_F_BATCH);
|
|
crp->crp_uio = &cod->uio;
|
|
crp->crp_callback = cryptodev_cb;
|
|
crp->crp_sid = cse->sid;
|
|
crp->crp_opaque = cod;
|
|
|
|
if (cop->iv) {
|
|
if (crde == NULL) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
if ((error = copyin(cop->iv, crde->crd_iv,
|
|
cse->txform->ivsize))) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT;
|
|
crde->crd_skip = 0;
|
|
} else if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */
|
|
crde->crd_skip = 0;
|
|
} else if (crde) {
|
|
crde->crd_flags |= CRD_F_IV_PRESENT;
|
|
crde->crd_skip = cse->txform->ivsize;
|
|
crde->crd_len -= cse->txform->ivsize;
|
|
}
|
|
|
|
if (cop->mac && crda == NULL) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = EINVAL;
|
|
goto bail;
|
|
}
|
|
|
|
again:
|
|
/*
|
|
* Let the dispatch run unlocked, then, interlock against the
|
|
* callback before checking if the operation completed and going
|
|
* to sleep. This insures drivers don't inherit our lock which
|
|
* results in a lock order reversal between crypto_dispatch forced
|
|
* entry and the crypto_done callback into us.
|
|
*/
|
|
error = crypto_dispatch(crp);
|
|
if (error != 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
mtx_lock(&cse->lock);
|
|
while (!cod->done)
|
|
mtx_sleep(cod, &cse->lock, PWAIT, "crydev", 0);
|
|
mtx_unlock(&cse->lock);
|
|
|
|
if (crp->crp_etype == EAGAIN) {
|
|
crp->crp_etype = 0;
|
|
crp->crp_flags &= ~CRYPTO_F_DONE;
|
|
cod->done = false;
|
|
goto again;
|
|
}
|
|
|
|
if (crp->crp_etype != 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
error = crp->crp_etype;
|
|
goto bail;
|
|
}
|
|
|
|
if (cop->dst &&
|
|
(error = copyout(cod->uio.uio_iov[0].iov_base, cop->dst,
|
|
cop->len))) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
if (cop->mac &&
|
|
(error = copyout((caddr_t)cod->uio.uio_iov[0].iov_base + cop->len,
|
|
cop->mac, cse->thash->hashsize))) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
bail:
|
|
if (crp)
|
|
crypto_freereq(crp);
|
|
if (cod)
|
|
cod_free(cod);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
cryptodev_aead(
|
|
struct csession *cse,
|
|
struct crypt_aead *caead,
|
|
struct ucred *active_cred,
|
|
struct thread *td)
|
|
{
|
|
struct cryptop_data *cod = NULL;
|
|
struct cryptop *crp = NULL;
|
|
struct cryptodesc *crde = NULL, *crda = NULL;
|
|
int error;
|
|
|
|
if (caead->len > 256*1024-4 || caead->aadlen > 256*1024-4) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (E2BIG);
|
|
}
|
|
|
|
if (cse->txform == NULL || cse->thash == NULL || caead->tag == NULL ||
|
|
(caead->len % cse->txform->blocksize) != 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
|
|
cod = cod_alloc(cse, caead->aadlen + caead->len + cse->thash->hashsize,
|
|
td);
|
|
|
|
crp = crypto_getreq(2);
|
|
if (crp == NULL) {
|
|
error = ENOMEM;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
if (caead->flags & COP_F_CIPHER_FIRST) {
|
|
crde = crp->crp_desc;
|
|
crda = crde->crd_next;
|
|
} else {
|
|
crda = crp->crp_desc;
|
|
crde = crda->crd_next;
|
|
}
|
|
|
|
if ((error = copyin(caead->aad, cod->uio.uio_iov[0].iov_base,
|
|
caead->aadlen))) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
if ((error = copyin(caead->src, (char *)cod->uio.uio_iov[0].iov_base +
|
|
caead->aadlen, caead->len))) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
/*
|
|
* For GCM, crd_len covers only the AAD. For other ciphers
|
|
* chained with an HMAC, crd_len covers both the AAD and the
|
|
* cipher text.
|
|
*/
|
|
crda->crd_skip = 0;
|
|
if (cse->cipher == CRYPTO_AES_NIST_GCM_16)
|
|
crda->crd_len = caead->aadlen;
|
|
else
|
|
crda->crd_len = caead->aadlen + caead->len;
|
|
crda->crd_inject = caead->aadlen + caead->len;
|
|
|
|
crda->crd_alg = cse->mac;
|
|
crda->crd_key = cse->mackey;
|
|
crda->crd_klen = cse->mackeylen * 8;
|
|
|
|
if (caead->op == COP_ENCRYPT)
|
|
crde->crd_flags |= CRD_F_ENCRYPT;
|
|
else
|
|
crde->crd_flags &= ~CRD_F_ENCRYPT;
|
|
crde->crd_skip = caead->aadlen;
|
|
crde->crd_len = caead->len;
|
|
crde->crd_inject = caead->aadlen;
|
|
|
|
crde->crd_alg = cse->cipher;
|
|
crde->crd_key = cse->key;
|
|
crde->crd_klen = cse->keylen * 8;
|
|
|
|
crp->crp_ilen = caead->aadlen + caead->len;
|
|
crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM
|
|
| (caead->flags & COP_F_BATCH);
|
|
crp->crp_uio = &cod->uio;
|
|
crp->crp_callback = cryptodev_cb;
|
|
crp->crp_sid = cse->sid;
|
|
crp->crp_opaque = cod;
|
|
|
|
if (caead->iv) {
|
|
if (caead->ivlen > sizeof(crde->crd_iv)) {
|
|
error = EINVAL;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
if ((error = copyin(caead->iv, crde->crd_iv, caead->ivlen))) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT;
|
|
} else {
|
|
crde->crd_flags |= CRD_F_IV_PRESENT;
|
|
crde->crd_skip += cse->txform->ivsize;
|
|
crde->crd_len -= cse->txform->ivsize;
|
|
}
|
|
|
|
if ((error = copyin(caead->tag, (caddr_t)cod->uio.uio_iov[0].iov_base +
|
|
caead->len + caead->aadlen, cse->thash->hashsize))) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
again:
|
|
/*
|
|
* Let the dispatch run unlocked, then, interlock against the
|
|
* callback before checking if the operation completed and going
|
|
* to sleep. This insures drivers don't inherit our lock which
|
|
* results in a lock order reversal between crypto_dispatch forced
|
|
* entry and the crypto_done callback into us.
|
|
*/
|
|
error = crypto_dispatch(crp);
|
|
if (error != 0) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
mtx_lock(&cse->lock);
|
|
while (!cod->done)
|
|
mtx_sleep(cod, &cse->lock, PWAIT, "crydev", 0);
|
|
mtx_unlock(&cse->lock);
|
|
|
|
if (crp->crp_etype == EAGAIN) {
|
|
crp->crp_etype = 0;
|
|
crp->crp_flags &= ~CRYPTO_F_DONE;
|
|
cod->done = false;
|
|
goto again;
|
|
}
|
|
|
|
if (crp->crp_etype != 0) {
|
|
error = crp->crp_etype;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
if (caead->dst && (error = copyout(
|
|
(caddr_t)cod->uio.uio_iov[0].iov_base + caead->aadlen, caead->dst,
|
|
caead->len))) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
if ((error = copyout((caddr_t)cod->uio.uio_iov[0].iov_base +
|
|
caead->aadlen + caead->len, caead->tag, cse->thash->hashsize))) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto bail;
|
|
}
|
|
|
|
bail:
|
|
crypto_freereq(crp);
|
|
if (cod)
|
|
cod_free(cod);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
cryptodev_cb(struct cryptop *crp)
|
|
{
|
|
struct cryptop_data *cod = crp->crp_opaque;
|
|
|
|
/*
|
|
* Lock to ensure the wakeup() is not missed by the loops
|
|
* waiting on cod->done in cryptodev_op() and
|
|
* cryptodev_aead().
|
|
*/
|
|
mtx_lock(&cod->cse->lock);
|
|
cod->done = true;
|
|
mtx_unlock(&cod->cse->lock);
|
|
wakeup(cod);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
cryptodevkey_cb(void *op)
|
|
{
|
|
struct cryptkop *krp = (struct cryptkop *) op;
|
|
|
|
wakeup_one(krp);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
cryptodev_key(struct crypt_kop *kop)
|
|
{
|
|
struct cryptkop *krp = NULL;
|
|
int error = EINVAL;
|
|
int in, out, size, i;
|
|
|
|
if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EFBIG);
|
|
}
|
|
|
|
in = kop->crk_iparams;
|
|
out = kop->crk_oparams;
|
|
switch (kop->crk_op) {
|
|
case CRK_MOD_EXP:
|
|
if (in == 3 && out == 1)
|
|
break;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
case CRK_MOD_EXP_CRT:
|
|
if (in == 6 && out == 1)
|
|
break;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
case CRK_DSA_SIGN:
|
|
if (in == 5 && out == 2)
|
|
break;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
case CRK_DSA_VERIFY:
|
|
if (in == 7 && out == 0)
|
|
break;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
case CRK_DH_COMPUTE_KEY:
|
|
if (in == 3 && out == 1)
|
|
break;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
default:
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (EINVAL);
|
|
}
|
|
|
|
krp = (struct cryptkop *)malloc(sizeof *krp, M_XDATA, M_WAITOK|M_ZERO);
|
|
if (!krp) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
return (ENOMEM);
|
|
}
|
|
krp->krp_op = kop->crk_op;
|
|
krp->krp_status = kop->crk_status;
|
|
krp->krp_iparams = kop->crk_iparams;
|
|
krp->krp_oparams = kop->crk_oparams;
|
|
krp->krp_crid = kop->crk_crid;
|
|
krp->krp_status = 0;
|
|
krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb;
|
|
|
|
for (i = 0; i < CRK_MAXPARAM; i++) {
|
|
if (kop->crk_param[i].crp_nbits > 65536) {
|
|
/* Limit is the same as in OpenBSD */
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits;
|
|
}
|
|
for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) {
|
|
size = (krp->krp_param[i].crp_nbits + 7) / 8;
|
|
if (size == 0)
|
|
continue;
|
|
krp->krp_param[i].crp_p = malloc(size, M_XDATA, M_WAITOK);
|
|
if (i >= krp->krp_iparams)
|
|
continue;
|
|
error = copyin(kop->crk_param[i].crp_p, krp->krp_param[i].crp_p, size);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
error = crypto_kdispatch(krp);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
error = tsleep(krp, PSOCK, "crydev", 0);
|
|
if (error) {
|
|
/* XXX can this happen? if so, how do we recover? */
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
|
|
kop->crk_crid = krp->krp_crid; /* device that did the work */
|
|
if (krp->krp_status != 0) {
|
|
error = krp->krp_status;
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
|
|
for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; i++) {
|
|
size = (krp->krp_param[i].crp_nbits + 7) / 8;
|
|
if (size == 0)
|
|
continue;
|
|
error = copyout(krp->krp_param[i].crp_p, kop->crk_param[i].crp_p, size);
|
|
if (error) {
|
|
SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
fail:
|
|
if (krp) {
|
|
kop->crk_status = krp->krp_status;
|
|
for (i = 0; i < CRK_MAXPARAM; i++) {
|
|
if (krp->krp_param[i].crp_p)
|
|
free(krp->krp_param[i].crp_p, M_XDATA);
|
|
}
|
|
free(krp, M_XDATA);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
cryptodev_find(struct crypt_find_op *find)
|
|
{
|
|
device_t dev;
|
|
size_t fnlen = sizeof find->name;
|
|
|
|
if (find->crid != -1) {
|
|
dev = crypto_find_device_byhid(find->crid);
|
|
if (dev == NULL)
|
|
return (ENOENT);
|
|
strncpy(find->name, device_get_nameunit(dev), fnlen);
|
|
find->name[fnlen - 1] = '\x0';
|
|
} else {
|
|
find->name[fnlen - 1] = '\x0';
|
|
find->crid = crypto_find_driver(find->name);
|
|
if (find->crid == -1)
|
|
return (ENOENT);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static int
|
|
cryptof_stat(
|
|
struct file *fp,
|
|
struct stat *sb,
|
|
struct ucred *active_cred,
|
|
struct thread *td)
|
|
{
|
|
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static int
|
|
cryptof_close(struct file *fp, struct thread *td)
|
|
{
|
|
struct fcrypt *fcr = fp->f_data;
|
|
struct csession *cse;
|
|
|
|
while ((cse = TAILQ_FIRST(&fcr->csessions))) {
|
|
TAILQ_REMOVE(&fcr->csessions, cse, next);
|
|
(void)csefree(cse);
|
|
}
|
|
free(fcr, M_XDATA);
|
|
fp->f_data = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
cryptof_fill_kinfo(struct file *fp, struct kinfo_file *kif, struct filedesc *fdp)
|
|
{
|
|
|
|
kif->kf_type = KF_TYPE_CRYPTO;
|
|
return (0);
|
|
}
|
|
|
|
static struct csession *
|
|
csefind(struct fcrypt *fcr, u_int ses)
|
|
{
|
|
struct csession *cse;
|
|
|
|
TAILQ_FOREACH(cse, &fcr->csessions, next)
|
|
if (cse->ses == ses)
|
|
return (cse);
|
|
return (NULL);
|
|
}
|
|
|
|
static int
|
|
csedelete(struct fcrypt *fcr, struct csession *cse_del)
|
|
{
|
|
struct csession *cse;
|
|
|
|
TAILQ_FOREACH(cse, &fcr->csessions, next) {
|
|
if (cse == cse_del) {
|
|
TAILQ_REMOVE(&fcr->csessions, cse, next);
|
|
return (1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static struct csession *
|
|
cseadd(struct fcrypt *fcr, struct csession *cse)
|
|
{
|
|
TAILQ_INSERT_TAIL(&fcr->csessions, cse, next);
|
|
cse->ses = fcr->sesn++;
|
|
return (cse);
|
|
}
|
|
|
|
struct csession *
|
|
csecreate(struct fcrypt *fcr, crypto_session_t sid, caddr_t key, u_int64_t keylen,
|
|
caddr_t mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac,
|
|
struct enc_xform *txform, struct auth_hash *thash)
|
|
{
|
|
struct csession *cse;
|
|
|
|
cse = malloc(sizeof(struct csession), M_XDATA, M_NOWAIT | M_ZERO);
|
|
if (cse == NULL)
|
|
return NULL;
|
|
mtx_init(&cse->lock, "cryptodev", "crypto session lock", MTX_DEF);
|
|
cse->key = key;
|
|
cse->keylen = keylen/8;
|
|
cse->mackey = mackey;
|
|
cse->mackeylen = mackeylen/8;
|
|
cse->sid = sid;
|
|
cse->cipher = cipher;
|
|
cse->mac = mac;
|
|
cse->txform = txform;
|
|
cse->thash = thash;
|
|
cseadd(fcr, cse);
|
|
return (cse);
|
|
}
|
|
|
|
static int
|
|
csefree(struct csession *cse)
|
|
{
|
|
int error;
|
|
|
|
error = crypto_freesession(cse->sid);
|
|
mtx_destroy(&cse->lock);
|
|
if (cse->key)
|
|
free(cse->key, M_XDATA);
|
|
if (cse->mackey)
|
|
free(cse->mackey, M_XDATA);
|
|
free(cse, M_XDATA);
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
cryptoopen(struct cdev *dev, int oflags, int devtype, struct thread *td)
|
|
{
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
cryptoread(struct cdev *dev, struct uio *uio, int ioflag)
|
|
{
|
|
return (EIO);
|
|
}
|
|
|
|
static int
|
|
cryptowrite(struct cdev *dev, struct uio *uio, int ioflag)
|
|
{
|
|
return (EIO);
|
|
}
|
|
|
|
static int
|
|
cryptoioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
|
|
{
|
|
struct file *f;
|
|
struct fcrypt *fcr;
|
|
int fd, error;
|
|
|
|
switch (cmd) {
|
|
case CRIOGET:
|
|
fcr = malloc(sizeof(struct fcrypt), M_XDATA, M_WAITOK);
|
|
TAILQ_INIT(&fcr->csessions);
|
|
fcr->sesn = 0;
|
|
|
|
error = falloc(td, &f, &fd, 0);
|
|
|
|
if (error) {
|
|
free(fcr, M_XDATA);
|
|
return (error);
|
|
}
|
|
/* falloc automatically provides an extra reference to 'f'. */
|
|
finit(f, FREAD | FWRITE, DTYPE_CRYPTO, fcr, &cryptofops);
|
|
*(u_int32_t *)data = fd;
|
|
fdrop(f, td);
|
|
break;
|
|
case CRIOFINDDEV:
|
|
error = cryptodev_find((struct crypt_find_op *)data);
|
|
break;
|
|
case CRIOASYMFEAT:
|
|
error = crypto_getfeat((int *)data);
|
|
break;
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
static struct cdevsw crypto_cdevsw = {
|
|
.d_version = D_VERSION,
|
|
.d_flags = D_NEEDGIANT,
|
|
.d_open = cryptoopen,
|
|
.d_read = cryptoread,
|
|
.d_write = cryptowrite,
|
|
.d_ioctl = cryptoioctl,
|
|
.d_name = "crypto",
|
|
};
|
|
static struct cdev *crypto_dev;
|
|
|
|
/*
|
|
* Initialization code, both for static and dynamic loading.
|
|
*/
|
|
static int
|
|
cryptodev_modevent(module_t mod, int type, void *unused)
|
|
{
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
if (bootverbose)
|
|
printf("crypto: <crypto device>\n");
|
|
crypto_dev = make_dev(&crypto_cdevsw, 0,
|
|
UID_ROOT, GID_WHEEL, 0666,
|
|
"crypto");
|
|
return 0;
|
|
case MOD_UNLOAD:
|
|
/*XXX disallow if active sessions */
|
|
destroy_dev(crypto_dev);
|
|
return 0;
|
|
}
|
|
return EINVAL;
|
|
}
|
|
|
|
static moduledata_t cryptodev_mod = {
|
|
"cryptodev",
|
|
cryptodev_modevent,
|
|
0
|
|
};
|
|
MODULE_VERSION(cryptodev, 1);
|
|
DECLARE_MODULE(cryptodev, cryptodev_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
|
|
MODULE_DEPEND(cryptodev, crypto, 1, 1, 1);
|
|
MODULE_DEPEND(cryptodev, zlib, 1, 1, 1);
|