1 files changed, 147 insertions, 0 deletions
diff --git a/usr/src/lib/libc/port/gen/mkdev.c b/usr/src/lib/libc/port/gen/mkdev.c
new file mode 100644
index 0000000000..018ab1a3b8
--- /dev/null
+++ b/usr/src/lib/libc/port/gen/mkdev.c
@@ -0,0 +1,147 @@
+/*
+ * 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 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*	Copyright (c) 1988 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+
+#include "synonyms.h"
+#include <sys/types.h>
+#include <sys/mkdev.h>
+#include <errno.h>
+
+/*
+ * Create a formatted device number
+ */
+dev_t
+__makedev(const int version, const major_t majdev, const minor_t mindev)
+{
+	dev_t devnum;
+	switch (version) {
+	case OLDDEV:
+		if (majdev > OMAXMAJ || mindev > OMAXMIN) {
+			errno = EINVAL;
+			return ((o_dev_t)NODEV);
+		}
+		devnum = ((majdev << ONBITSMINOR) | mindev);
+		break;
+
+	case NEWDEV:
+#if MAXMAJ != 0xfffffffful	/* assumes major_t == uint32_t */
+		if (majdev > MAXMAJ) {
+			errno = EINVAL;
+			return (NODEV);
+		}
+#endif
+#if MAXMIN != 0xfffffffful	/* assumes minor_t == uint32_t */
+		if (mindev > MAXMIN) {
+			errno = EINVAL;
+			return (NODEV);
+		}
+#endif
+		if ((devnum = (((dev_t)majdev << NBITSMINOR) |
+		    mindev)) == NODEV) {
+			errno = EINVAL;
+			return (NODEV);
+		}
+		break;
+
+	default:
+		errno = EINVAL;
+		return (NODEV);
+	}
+
+	return (devnum);
+}
+
+/*
+ * Return major number part of formatted device number
+ */
+major_t
+__major(const int version, const dev_t devnum)
+{
+	major_t maj;
+
+	switch (version) {
+	case OLDDEV:
+		maj = (devnum >> ONBITSMINOR);
+		if (devnum == NODEV || maj > OMAXMAJ) {
+			errno = EINVAL;
+			return ((major_t)NODEV);
+		}
+		break;
+
+	case NEWDEV:
+		maj = (devnum >> NBITSMINOR);
+		if (devnum == NODEV) {
+			errno = EINVAL;
+			return ((major_t)NODEV);
+		}
+#if MAXMAJ != 0xfffffffful	/* assumes major_t == uint32_t */
+		if (maj > MAXMAJ) {
+			errno = EINVAL;
+			return ((major_t)NODEV);
+		}
+#endif
+		break;
+
+	default:
+		errno = EINVAL;
+		return ((major_t)NODEV);
+	}
+
+	return (maj);
+}
+
+
+/*
+ * Return minor number part of formatted device number
+ */
+minor_t
+__minor(const int version, const dev_t devnum)
+{
+	switch (version) {
+	case OLDDEV:
+		if (devnum == NODEV) {
+			errno = EINVAL;
+			return ((minor_t)NODEV);
+		}
+		return (devnum & OMAXMIN);
+
+	case NEWDEV:
+		if (devnum == NODEV) {
+			errno = EINVAL;
+			return ((minor_t)NODEV);
+		}
+		return (devnum & MAXMIN);
+
+	default:
+		errno = EINVAL;
+		return ((minor_t)NODEV);
+	}
+}