OpenSolaris Launch

1 files changed, 139 insertions, 0 deletions

diff --git a/usr/src/uts/common/syscall/rename.c b/usr/src/uts/common/syscall/rename.c
new file mode 100644
index 0000000000..4d8d5270ed
--- /dev/null
+++ b/usr/src/uts/common/syscall/rename.c
@@ -0,0 +1,139 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (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 2001 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+/*
+ * Portions of this source code were derived from Berkeley 4.3 BSD
+ * under license from the Regents of the University of California.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/param.h>
+#include <sys/isa_defs.h>
+#include <sys/types.h>
+#include <sys/sysmacros.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/vnode.h>
+#include <sys/uio.h>
+#include <sys/debug.h>
+#include <sys/file.h>
+#include <sys/fcntl.h>
+
+/*
+ * Rename or move an existing file.
+ */
+int
+rename(char *from, char *to)
+{
+	int	error;
+
+	if (error = vn_rename(from, to, UIO_USERSPACE))
+		return (set_errno(error));
+	return (0);
+}
+
+/*
+ * Rename a file relative to a given directory
+ */
+int
+renameat(int fromfd, char *old, int tofd, char *new)
+{
+	file_t *fromfp;
+	file_t *tofp;
+	vnode_t	*fromvp, *tovp;
+	int error;
+	proc_t *p = curproc;
+	char oldstart, newstart;
+
+	tovp = fromvp = NULL;
+
+	if ((fromfd == AT_FDCWD && old == NULL) ||
+	    (tofd == AT_FDCWD && new == NULL))
+		return (set_errno(EFAULT));
+
+	if (fromfd == AT_FDCWD || tofd == AT_FDCWD) {
+		mutex_enter(&p->p_lock);
+		if (fromfd == AT_FDCWD) {
+			fromvp = PTOU(p)->u_cdir;
+			VN_HOLD(fromvp);
+		}
+		if (tofd == AT_FDCWD) {
+			tovp = PTOU(p)->u_cdir;
+			VN_HOLD(tovp);
+		}
+		mutex_exit(&p->p_lock);
+	}
+
+	if (copyin(old, &oldstart, sizeof (char)))
+		return (set_errno(EFAULT));
+
+	if (copyin(new, &newstart, sizeof (char)))
+		return (set_errno(EFAULT));
+
+	if (fromvp == NULL) {
+		if (oldstart != '/') {
+			if ((fromfp = getf(fromfd)) == NULL) {
+				if (tovp != NULL)
+					VN_RELE(tovp);
+				return (set_errno(EBADF));
+			}
+			fromvp = fromfp->f_vnode;
+			VN_HOLD(fromvp);
+			releasef(fromfd);
+		} else {
+			fromvp = NULL;
+		}
+	}
+
+	if (tovp == NULL) {
+		if (newstart != '/') {
+			if ((tofp = getf(tofd)) == NULL) {
+				if (fromvp != NULL)
+					VN_RELE(fromvp);
+				return (set_errno(EBADF));
+			}
+			tovp = tofp->f_vnode;
+			VN_HOLD(tovp);
+			releasef(tofd);
+		} else {
+			tovp = NULL;
+		}
+	}
+
+	error = vn_renameat(fromvp, old, tovp, new, UIO_USERSPACE);
+
+	if (fromvp != NULL)
+		VN_RELE(fromvp);
+	if (tovp != NULL)
+		VN_RELE(tovp);
+	if (error != 0)
+		return (set_errno(error));
+	return (error);
+}