4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
27 /* All Rights Reserved */
30 * University Copyright- Copyright (c) 1982, 1986, 1988
31 * The Regents of the University of California
34 * University Acknowledgment- Portions of this document are derived from
35 * software developed by the University of California, Berkeley, and its
43 #include <sys/types.h>
47 * same as uiomove() but doesn't modify uio structure.
48 * return in cbytes how many bytes were copied.
51 uiocopy(void *p, size_t n, enum uio_rw rw, struct uio *uio, size_t *cbytes)
57 iovcnt = uio->uio_iovcnt;
60 for (iov = uio->uio_iov; n > 0 && iovcnt > 0; iov++, iovcnt--) {
61 cnt = MIN(iov->iov_len, n);
65 switch (uio->uio_segflg) {
68 error = copyout(p, iov->iov_base, cnt);
70 error = copyin(iov->iov_base, p, cnt);
75 if (uio->uio_rw == UIO_READ)
76 bcopy(p, iov->iov_base, cnt);
78 bcopy(iov->iov_base, p, cnt);
90 * Drop the next n chars out of *uiop.
93 uioskip(uio_t *uiop, size_t n)
95 if (n > uiop->uio_resid)
98 register iovec_t *iovp = uiop->uio_iov;
99 register size_t niovb = MIN(iovp->iov_len, n);
106 iovp->iov_base += niovb;
107 uiop->uio_loffset += niovb;
108 iovp->iov_len -= niovb;
109 uiop->uio_resid -= niovb;