1 /* $OpenBSD: criov.c,v 1.9 2002/01/29 15:48:29 jason Exp $ */
4 * Copyright (c) 1999 Theo de Raadt
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/param.h>
34 #include <sys/systm.h>
36 #include <sys/errno.h>
37 #include <sys/malloc.h>
38 #include <sys/kernel.h>
41 #include <opencrypto/cryptodev.h>
44 cuio_copydata(struct uio* uio, int off, int len, caddr_t cp)
46 struct iovec *iov = uio->uio_iov;
47 int iol = uio->uio_iovcnt;
51 panic("cuio_copydata: off %d < 0", off);
53 panic("cuio_copydata: len %d < 0", len);
56 panic("iov_copydata: empty in skip");
57 if (off < iov->iov_len)
65 panic("cuio_copydata: empty");
66 count = min(iov->iov_len - off, len);
67 bcopy(((caddr_t)iov->iov_base) + off, cp, count);
77 cuio_copyback(struct uio* uio, int off, int len, caddr_t cp)
79 struct iovec *iov = uio->uio_iov;
80 int iol = uio->uio_iovcnt;
84 panic("cuio_copyback: off %d < 0", off);
86 panic("cuio_copyback: len %d < 0", len);
89 panic("cuio_copyback: empty in skip");
90 if (off < iov->iov_len)
98 panic("uio_copyback: empty");
99 count = min(iov->iov_len - off, len);
100 bcopy(cp, ((caddr_t)iov->iov_base) + off, count);
110 * Return a pointer to iov/offset of location in iovec list.
113 cuio_getptr(struct uio *uio, int loc, int *off)
115 struct iovec *iov = uio->uio_iov;
116 int iol = uio->uio_iovcnt;
119 /* Normal end of search */
120 if (loc < iov->iov_len) {
128 /* Point at the end of valid data */