299 lines
8.2 KiB
C
299 lines
8.2 KiB
C
/* $NetBSD: pack_dev.c,v 1.1 2001/10/08 04:45:30 lukem Exp $ */
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/*-
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* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: pack_dev.c,v 1.1 2001/10/08 04:45:30 lukem Exp $");
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include "pack_dev.h"
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static pack_t pack_netbsd;
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static pack_t pack_freebsd;
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static pack_t pack_8_8;
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static pack_t pack_12_20;
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static pack_t pack_14_18;
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static pack_t pack_8_24;
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static pack_t pack_bsdos;
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static int compare_format(const void *, const void *);
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/* exported */
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dev_t
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pack_native(int n, u_long numbers[])
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{
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dev_t dev;
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if (n == 2) {
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dev = makedev(numbers[0], numbers[1]);
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if (major(dev) != numbers[0])
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errx(1, "invalid major number");
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if (minor(dev) != numbers[1])
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errx(1, "invalid minor number");
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} else
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errx(1, "too many fields for format");
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return (dev);
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}
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#define major_netbsd(x) ((int32_t)((((x) & 0x000fff00) >> 8)))
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#define minor_netbsd(x) ((int32_t)((((x) & 0xfff00000) >> 12) | \
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(((x) & 0x000000ff) >> 0)))
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#define makedev_netbsd(x,y) ((dev_t)((((x) << 8) & 0x000fff00) | \
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(((y) << 12) & 0xfff00000) | \
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(((y) << 0) & 0x000000ff)))
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static dev_t
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pack_netbsd(int n, u_long numbers[])
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{
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dev_t dev;
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if (n == 2) {
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dev = makedev_netbsd(numbers[0], numbers[1]);
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if (major_netbsd(dev) != numbers[0])
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errx(1, "invalid major number");
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if (minor_netbsd(dev) != numbers[1])
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errx(1, "invalid minor number");
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} else
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errx(1, "too many fields for format");
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return (dev);
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}
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#define major_freebsd(x) ((int32_t)(((x) & 0x0000ff00) >> 8))
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#define minor_freebsd(x) ((int32_t)(((x) & 0xffff00ff) >> 0))
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#define makedev_freebsd(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \
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(((y) << 0) & 0xffff00ff)))
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static dev_t
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pack_freebsd(int n, u_long numbers[])
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{
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dev_t dev;
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if (n == 2) {
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dev = makedev_freebsd(numbers[0], numbers[1]);
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if (major_freebsd(dev) != numbers[0])
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errx(1, "invalid major number");
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if (minor_freebsd(dev) != numbers[1])
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errx(1, "invalid minor number");
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} else
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errx(1, "too many fields for format");
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return (dev);
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}
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#define major_8_8(x) ((int32_t)(((x) & 0x0000ff00) >> 8))
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#define minor_8_8(x) ((int32_t)(((x) & 0x000000ff) >> 0))
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#define makedev_8_8(x,y) ((dev_t)((((x) << 8) & 0x0000ff00) | \
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(((y) << 0) & 0x000000ff)))
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static dev_t
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pack_8_8(int n, u_long numbers[])
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{
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dev_t dev;
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if (n == 2) {
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dev = makedev_8_8(numbers[0], numbers[1]);
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if (major_8_8(dev) != numbers[0])
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errx(1, "invalid major number");
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if (minor_8_8(dev) != numbers[1])
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errx(1, "invalid minor number");
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} else
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errx(1, "too many fields for format");
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return (dev);
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}
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#define major_12_20(x) ((int32_t)(((x) & 0xfff00000) >> 20))
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#define minor_12_20(x) ((int32_t)(((x) & 0x000fffff) >> 0))
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#define makedev_12_20(x,y) ((dev_t)((((x) << 20) & 0xfff00000) | \
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(((y) << 0) & 0x000fffff)))
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static dev_t
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pack_12_20(int n, u_long numbers[])
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{
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dev_t dev;
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if (n == 2) {
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dev = makedev_12_20(numbers[0], numbers[1]);
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if (major_12_20(dev) != numbers[0])
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errx(1, "invalid major number");
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if (minor_12_20(dev) != numbers[1])
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errx(1, "invalid minor number");
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} else
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errx(1, "too many fields for format");
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return (dev);
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}
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#define major_14_18(x) ((int32_t)(((x) & 0xfffc0000) >> 18))
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#define minor_14_18(x) ((int32_t)(((x) & 0x0003ffff) >> 0))
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#define makedev_14_18(x,y) ((dev_t)((((x) << 18) & 0xfffc0000) | \
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(((y) << 0) & 0x0003ffff)))
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static dev_t
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pack_14_18(int n, u_long numbers[])
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{
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dev_t dev;
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if (n == 2) {
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dev = makedev_14_18(numbers[0], numbers[1]);
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if (major_14_18(dev) != numbers[0])
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errx(1, "invalid major number");
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if (minor_14_18(dev) != numbers[1])
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errx(1, "invalid minor number");
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} else
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errx(1, "too many fields for format");
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return (dev);
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}
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#define major_8_24(x) ((int32_t)(((x) & 0xff000000) >> 24))
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#define minor_8_24(x) ((int32_t)(((x) & 0x00ffffff) >> 0))
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#define makedev_8_24(x,y) ((dev_t)((((x) << 24) & 0xff000000) | \
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(((y) << 0) & 0x00ffffff)))
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static dev_t
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pack_8_24(int n, u_long numbers[])
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{
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dev_t dev;
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if (n == 2) {
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dev = makedev_8_24(numbers[0], numbers[1]);
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if (major_8_24(dev) != numbers[0])
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errx(1, "invalid major number");
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if (minor_8_24(dev) != numbers[1])
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errx(1, "invalid minor number");
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} else
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errx(1, "too many fields for format");
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return (dev);
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}
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#define major_12_12_8(x) ((int32_t)(((x) & 0xfff00000) >> 20))
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#define unit_12_12_8(x) ((int32_t)(((x) & 0x000fff00) >> 8))
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#define subunit_12_12_8(x) ((int32_t)(((x) & 0x000000ff) >> 0))
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#define makedev_12_12_8(x,y,z) ((dev_t)((((x) << 20) & 0xfff00000) | \
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(((y) << 8) & 0x000fff00) | \
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(((z) << 0) & 0x000000ff)))
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static dev_t
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pack_bsdos(int n, u_long numbers[])
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{
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dev_t dev;
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if (n == 2) {
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dev = makedev_12_20(numbers[0], numbers[1]);
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if (major_12_20(dev) != numbers[0])
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errx(1, "invalid major number");
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if (minor_12_20(dev) != numbers[1])
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errx(1, "invalid minor number");
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} else if (n == 3) {
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dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]);
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if (major_12_12_8(dev) != numbers[0])
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errx(1, "invalid major number");
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if (unit_12_12_8(dev) != numbers[1])
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errx(1, "invalid unit number");
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if (subunit_12_12_8(dev) != numbers[2])
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errx(1, "invalid subunit number");
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} else
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errx(1, "too many fields for format");
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return (dev);
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}
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/* list of formats and pack functions */
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/* this list must be sorted lexically */
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struct format {
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const char *name;
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pack_t *pack;
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} formats[] = {
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{"386bsd", pack_8_8},
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{"4bsd", pack_8_8},
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{"bsdos", pack_bsdos},
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{"freebsd", pack_freebsd},
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{"hpux", pack_8_24},
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{"isc", pack_8_8},
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{"linux", pack_8_8},
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{"native", pack_native},
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{"netbsd", pack_netbsd},
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{"osf1", pack_12_20},
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{"sco", pack_8_8},
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{"solaris", pack_14_18},
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{"sunos", pack_8_8},
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{"svr3", pack_8_8},
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{"svr4", pack_14_18},
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{"ultrix", pack_8_8},
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};
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static int
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compare_format(const void *key, const void *element)
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{
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const char *name;
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const struct format *format;
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name = key;
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format = element;
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return (strcmp(name, format->name));
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}
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pack_t *
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pack_find(const char *name)
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{
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struct format *format;
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format = bsearch(name, formats,
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sizeof(formats)/sizeof(formats[0]),
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sizeof(formats[0]), compare_format);
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if (format == 0)
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return (NULL);
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return (format->pack);
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}
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