1 files changed, 112 insertions, 0 deletions
diff --git a/sys/cddl/compat/opensolaris/kern/opensolaris_uio.c b/sys/cddl/compat/opensolaris/kern/opensolaris_uio.c
new file mode 100644
index 0000000..c319f62
--- /dev/null
+++ b/sys/cddl/compat/opensolaris/kern/opensolaris_uio.c
@@ -0,0 +1,112 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
+/*        All Rights Reserved   */
+
+/*
+ * University Copyright- Copyright (c) 1982, 1986, 1988
+ * The Regents of the University of California
+ * All Rights Reserved
+ *
+ * University Acknowledgment- Portions of this document are derived from
+ * software developed by the University of California, Berkeley, and its
+ * contributors.
+ */
+
+/*
+ * $FreeBSD$
+ */
+
+#include <sys/types.h>
+#include <sys/uio.h>
+
+/*
+ * same as uiomove() but doesn't modify uio structure.
+ * return in cbytes how many bytes were copied.
+ */
+int
+uiocopy(void *p, size_t n, enum uio_rw rw, struct uio *uio, size_t *cbytes)
+{
+	struct iovec *iov;
+	ulong_t cnt;
+	int error, iovcnt;
+
+	iovcnt = uio->uio_iovcnt;
+	*cbytes = 0;
+
+	for (iov = uio->uio_iov; n > 0 && iovcnt > 0; iov++, iovcnt--) {
+		cnt = MIN(iov->iov_len, n);
+		if (cnt == 0)
+			continue;
+
+		switch (uio->uio_segflg) {
+		case UIO_USERSPACE:
+			if (rw == UIO_READ)
+				error = copyout(p, iov->iov_base, cnt);
+			else
+				error = copyin(iov->iov_base, p, cnt);
+			if (error)
+				return (error);
+			break;
+		case UIO_SYSSPACE:
+			if (uio->uio_rw == UIO_READ)
+				bcopy(p, iov->iov_base, cnt);
+			else
+				bcopy(iov->iov_base, p, cnt);
+			break;
+		}
+
+		p = (caddr_t)p + cnt;
+		n -= cnt;
+		*cbytes += cnt;
+	}
+	return (0);
+}
+
+/*
+ * Drop the next n chars out of *uiop.
+ */
+void
+uioskip(uio_t *uiop, size_t n)
+{
+	if (n > uiop->uio_resid)
+		return;
+	while (n != 0) {
+		register iovec_t	*iovp = uiop->uio_iov;
+		register size_t		niovb = MIN(iovp->iov_len, n);
+
+		if (niovb == 0) {
+			uiop->uio_iov++;
+			uiop->uio_iovcnt--;
+			continue;
+		}
+		iovp->iov_base += niovb;
+		uiop->uio_loffset += niovb;
+		iovp->iov_len -= niovb;
+		uiop->uio_resid -= niovb;
+		n -= niovb;
+	}
+}