NetBSD-5.0.2/sbin/mknod/pack_dev.c
/* $NetBSD: pack_dev.c,v 1.9 2008/04/28 20:23:09 martin Exp $ */
/*-
* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#if !defined(lint)
__RCSID("$NetBSD: pack_dev.c,v 1.9 2008/04/28 20:23:09 martin Exp $");
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "pack_dev.h"
static pack_t pack_netbsd;
static pack_t pack_freebsd;
static pack_t pack_8_8;
static pack_t pack_12_20;
static pack_t pack_14_18;
static pack_t pack_8_24;
static pack_t pack_bsdos;
static int compare_format(const void *, const void *);
static const char iMajorError[] = "invalid major number";
static const char iMinorError[] = "invalid minor number";
static const char tooManyFields[] = "too many fields for format";
/* exported */
portdev_t
pack_native(int n, u_long numbers[], const char **error)
{
portdev_t dev = 0;
if (n == 2) {
dev = makedev(numbers[0], numbers[1]);
if (major(dev) != numbers[0])
*error = iMajorError;
else if (minor(dev) != numbers[1])
*error = iMinorError;
} else
*error = tooManyFields;
return (dev);
}
static portdev_t
pack_netbsd(int n, u_long numbers[], const char **error)
{
portdev_t dev = 0;
if (n == 2) {
dev = makedev_netbsd(numbers[0], numbers[1]);
if (major_netbsd(dev) != numbers[0])
*error = iMajorError;
else if (minor_netbsd(dev) != numbers[1])
*error = iMinorError;
} else
*error = tooManyFields;
return (dev);
}
#define major_freebsd(x) ((int32_t)(((x) & 0x0000ff00) >> 8))
#define minor_freebsd(x) ((int32_t)(((x) & 0xffff00ff) >> 0))
#define makedev_freebsd(x,y) ((portdev_t)((((x) << 8) & 0x0000ff00) | \
(((y) << 0) & 0xffff00ff)))
static portdev_t
pack_freebsd(int n, u_long numbers[], const char **error)
{
portdev_t dev = 0;
if (n == 2) {
dev = makedev_freebsd(numbers[0], numbers[1]);
if (major_freebsd(dev) != numbers[0])
*error = iMajorError;
if (minor_freebsd(dev) != numbers[1])
*error = iMinorError;
} else
*error = tooManyFields;
return (dev);
}
#define major_8_8(x) ((int32_t)(((x) & 0x0000ff00) >> 8))
#define minor_8_8(x) ((int32_t)(((x) & 0x000000ff) >> 0))
#define makedev_8_8(x,y) ((portdev_t)((((x) << 8) & 0x0000ff00) | \
(((y) << 0) & 0x000000ff)))
static portdev_t
pack_8_8(int n, u_long numbers[], const char **error)
{
portdev_t dev = 0;
if (n == 2) {
dev = makedev_8_8(numbers[0], numbers[1]);
if (major_8_8(dev) != numbers[0])
*error = iMajorError;
if (minor_8_8(dev) != numbers[1])
*error = iMinorError;
} else
*error = tooManyFields;
return (dev);
}
#define major_12_20(x) ((int32_t)(((x) & 0xfff00000) >> 20))
#define minor_12_20(x) ((int32_t)(((x) & 0x000fffff) >> 0))
#define makedev_12_20(x,y) ((portdev_t)((((x) << 20) & 0xfff00000) | \
(((y) << 0) & 0x000fffff)))
static portdev_t
pack_12_20(int n, u_long numbers[], const char **error)
{
portdev_t dev = 0;
if (n == 2) {
dev = makedev_12_20(numbers[0], numbers[1]);
if (major_12_20(dev) != numbers[0])
*error = iMajorError;
if (minor_12_20(dev) != numbers[1])
*error = iMinorError;
} else
*error = tooManyFields;
return (dev);
}
#define major_14_18(x) ((int32_t)(((x) & 0xfffc0000) >> 18))
#define minor_14_18(x) ((int32_t)(((x) & 0x0003ffff) >> 0))
#define makedev_14_18(x,y) ((portdev_t)((((x) << 18) & 0xfffc0000) | \
(((y) << 0) & 0x0003ffff)))
static portdev_t
pack_14_18(int n, u_long numbers[], const char **error)
{
portdev_t dev = 0;
if (n == 2) {
dev = makedev_14_18(numbers[0], numbers[1]);
if (major_14_18(dev) != numbers[0])
*error = iMajorError;
if (minor_14_18(dev) != numbers[1])
*error = iMinorError;
} else
*error = tooManyFields;
return (dev);
}
#define major_8_24(x) ((int32_t)(((x) & 0xff000000) >> 24))
#define minor_8_24(x) ((int32_t)(((x) & 0x00ffffff) >> 0))
#define makedev_8_24(x,y) ((portdev_t)((((x) << 24) & 0xff000000) | \
(((y) << 0) & 0x00ffffff)))
static portdev_t
pack_8_24(int n, u_long numbers[], const char **error)
{
portdev_t dev = 0;
if (n == 2) {
dev = makedev_8_24(numbers[0], numbers[1]);
if (major_8_24(dev) != numbers[0])
*error = iMajorError;
if (minor_8_24(dev) != numbers[1])
*error = iMinorError;
} else
*error = tooManyFields;
return (dev);
}
#define major_12_12_8(x) ((int32_t)(((x) & 0xfff00000) >> 20))
#define unit_12_12_8(x) ((int32_t)(((x) & 0x000fff00) >> 8))
#define subunit_12_12_8(x) ((int32_t)(((x) & 0x000000ff) >> 0))
#define makedev_12_12_8(x,y,z) ((portdev_t)((((x) << 20) & 0xfff00000) | \
(((y) << 8) & 0x000fff00) | \
(((z) << 0) & 0x000000ff)))
static portdev_t
pack_bsdos(int n, u_long numbers[], const char **error)
{
portdev_t dev = 0;
if (n == 2) {
dev = makedev_12_20(numbers[0], numbers[1]);
if (major_12_20(dev) != numbers[0])
*error = iMajorError;
if (minor_12_20(dev) != numbers[1])
*error = iMinorError;
} else if (n == 3) {
dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]);
if (major_12_12_8(dev) != numbers[0])
*error = iMajorError;
if (unit_12_12_8(dev) != numbers[1])
*error = "invalid unit number";
if (subunit_12_12_8(dev) != numbers[2])
*error = "invalid subunit number";
} else
*error = tooManyFields;
return (dev);
}
/* list of formats and pack functions */
/* this list must be sorted lexically */
struct format {
const char *name;
pack_t *pack;
} formats[] = {
{"386bsd", pack_8_8},
{"4bsd", pack_8_8},
{"bsdos", pack_bsdos},
{"freebsd", pack_freebsd},
{"hpux", pack_8_24},
{"isc", pack_8_8},
{"linux", pack_8_8},
{"native", pack_native},
{"netbsd", pack_netbsd},
{"osf1", pack_12_20},
{"sco", pack_8_8},
{"solaris", pack_14_18},
{"sunos", pack_8_8},
{"svr3", pack_8_8},
{"svr4", pack_14_18},
{"ultrix", pack_8_8},
};
static int
compare_format(const void *key, const void *element)
{
const char *name;
const struct format *format;
name = key;
format = element;
return (strcmp(name, format->name));
}
pack_t *
pack_find(const char *name)
{
struct format *format;
format = bsearch(name, formats,
sizeof(formats)/sizeof(formats[0]),
sizeof(formats[0]), compare_format);
if (format == 0)
return (NULL);
return (format->pack);
}