OpenSolaris Launch

1 files changed, 60 insertions, 0 deletions

diff --git a/usr/src/uts/common/syscall/resolvepath.c b/usr/src/uts/common/syscall/resolvepath.c
new file mode 100644
index 0000000000..e6cb678761
--- /dev/null
+++ b/usr/src/uts/common/syscall/resolvepath.c
@@ -0,0 +1,60 @@
+/*
+ * 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
+ */
+#ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * Copyright 1997 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/pathname.h>
+
+int
+resolvepath(char *path, char *buf, size_t count)
+{
+	struct pathname lookpn;
+	struct pathname resolvepn;
+	int error;
+
+	if (count == 0)
+		return (0);
+	if (error = pn_get(path, UIO_USERSPACE, &lookpn))
+		return (set_errno(error));
+	pn_alloc(&resolvepn);
+	error = lookuppn(&lookpn, &resolvepn, FOLLOW, NULL, NULL);
+	if (error == 0) {
+		if (count > resolvepn.pn_pathlen)
+			count = resolvepn.pn_pathlen;
+		if (copyout(resolvepn.pn_path, buf, count))
+			error = EFAULT;
+	}
+	pn_free(&resolvepn);
+	pn_free(&lookpn);
+
+	if (error)
+		return (set_errno(error));
+	return ((int)count);
+}