diff options
Diffstat (limited to 'usr/src/lib/libbc/libc/sys/common/s5sysmacros.h')
| -rw-r--r-- | usr/src/lib/libbc/libc/sys/common/s5sysmacros.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/usr/src/lib/libbc/libc/sys/common/s5sysmacros.h b/usr/src/lib/libbc/libc/sys/common/s5sysmacros.h new file mode 100644 index 0000000000..3e59830f32 --- /dev/null +++ b/usr/src/lib/libbc/libc/sys/common/s5sysmacros.h @@ -0,0 +1,43 @@ +/* + * 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 1993 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +#define L_BITSMAJOR 14 /* # of SVR4 major device bits */ +#define L_BITSMINOR 18 /* # of SVR4 minor device bits */ +#define L_MAXMIN 0x3ffff /* MAX minor for 3b2 software drivers. + ** For 3b2 hardware devices the minor is + ** restricted to 256 (0-255) + */ +#define O_BITSMINOR 8 /* # of SunOS 4.x minor device bits */ +#define O_MAXMAJ 0xff /* SunOS 4.x max major value */ +#define O_MAXMIN 0xff /* SunOS 4.x max minor value */ + +/* convert to old dev format */ + +#define cmpdev(x) (unsigned long)((((x)>>L_BITSMINOR) > O_MAXMAJ || \ + ((x)&L_MAXMIN) > O_MAXMIN) ? NODEV : \ + ((((x)>>L_BITSMINOR)<<O_BITSMINOR)|((x)&O_MAXMIN))) |