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/* $NetBSD: pack_dev.c,v 1.12 2013/06/14 16:28:20 tsutsui 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.
*/
/* Originally from NetBSD's mknod(8) source. */
#include "archive_platform.h"
#if HAVE_SYS_CDEFS_H
#include <sys/cdefs.h>
#endif
#if !defined(lint)
__RCSID("$NetBSD$");
#endif /* not lint */
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_SYS_SYSMACROS_H
#include <sys/sysmacros.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "archive_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";
/* This is blatantly stolen from libarchive/archive_entry.c,
* in an attempt to get this to play nice on MinGW... */
#if !defined(HAVE_MAJOR) && !defined(major)
/* Replacement for major/minor/makedev. */
#define major(x) ((int)(0x00ff & ((x) >> 8)))
#define minor(x) ((int)(0xffff00ff & (x)))
#define makedev(maj,min) ((0xff00 & ((maj)<<8)) | (0xffff00ff & (min)))
#endif
/* Play games to come up with a suitable makedev() definition. */
#ifdef __QNXNTO__
/* QNX. <sigh> */
#include <sys/netmgr.h>
#define apd_makedev(maj, min) makedev(ND_LOCAL_NODE, (maj), (min))
#elif defined makedev
/* There's a "makedev" macro. */
#define apd_makedev(maj, min) makedev((maj), (min))
#elif defined mkdev || ((defined _WIN32 || defined __WIN32__) && !defined(__CYGWIN__))
/* Windows. <sigh> */
#define apd_makedev(maj, min) mkdev((maj), (min))
#else
/* There's a "makedev" function. */
#define apd_makedev(maj, min) makedev((maj), (min))
#endif
/* exported */
dev_t
pack_native(int n, unsigned long numbers[], const char **error)
{
dev_t dev = 0;
if (n == 2) {
dev = apd_makedev(numbers[0], numbers[1]);
if ((unsigned long)major(dev) != numbers[0])
*error = iMajorError;
else if ((unsigned long)minor(dev) != numbers[1])
*error = iMinorError;
} else
*error = tooManyFields;
return (dev);
}
static dev_t
pack_netbsd(int n, unsigned long numbers[], const char **error)
{
dev_t dev = 0;
if (n == 2) {
dev = makedev_netbsd(numbers[0], numbers[1]);
if ((unsigned long)major_netbsd(dev) != numbers[0])
*error = iMajorError;
else if ((unsigned long)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) ((dev_t)((((x) << 8) & 0x0000ff00) | \
(((y) << 0) & 0xffff00ff)))
static dev_t
pack_freebsd(int n, unsigned long numbers[], const char **error)
{
dev_t dev = 0;
if (n == 2) {
dev = makedev_freebsd(numbers[0], numbers[1]);
if ((unsigned long)major_freebsd(dev) != numbers[0])
*error = iMajorError;
if ((unsigned long)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) ((dev_t)((((x) << 8) & 0x0000ff00) | \
(((y) << 0) & 0x000000ff)))
static dev_t
pack_8_8(int n, unsigned long numbers[], const char **error)
{
dev_t dev = 0;
if (n == 2) {
dev = makedev_8_8(numbers[0], numbers[1]);
if ((unsigned long)major_8_8(dev) != numbers[0])
*error = iMajorError;
if ((unsigned long)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) ((dev_t)((((x) << 20) & 0xfff00000) | \
(((y) << 0) & 0x000fffff)))
static dev_t
pack_12_20(int n, unsigned long numbers[], const char **error)
{
dev_t dev = 0;
if (n == 2) {
dev = makedev_12_20(numbers[0], numbers[1]);
if ((unsigned long)major_12_20(dev) != numbers[0])
*error = iMajorError;
if ((unsigned long)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) ((dev_t)((((x) << 18) & 0xfffc0000) | \
(((y) << 0) & 0x0003ffff)))
static dev_t
pack_14_18(int n, unsigned long numbers[], const char **error)
{
dev_t dev = 0;
if (n == 2) {
dev = makedev_14_18(numbers[0], numbers[1]);
if ((unsigned long)major_14_18(dev) != numbers[0])
*error = iMajorError;
if ((unsigned long)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) ((dev_t)((((x) << 24) & 0xff000000) | \
(((y) << 0) & 0x00ffffff)))
static dev_t
pack_8_24(int n, unsigned long numbers[], const char **error)
{
dev_t dev = 0;
if (n == 2) {
dev = makedev_8_24(numbers[0], numbers[1]);
if ((unsigned long)major_8_24(dev) != numbers[0])
*error = iMajorError;
if ((unsigned long)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) ((dev_t)((((x) << 20) & 0xfff00000) | \
(((y) << 8) & 0x000fff00) | \
(((z) << 0) & 0x000000ff)))
static dev_t
pack_bsdos(int n, unsigned long numbers[], const char **error)
{
dev_t dev = 0;
if (n == 2) {
dev = makedev_12_20(numbers[0], numbers[1]);
if ((unsigned long)major_12_20(dev) != numbers[0])
*error = iMajorError;
if ((unsigned long)minor_12_20(dev) != numbers[1])
*error = iMinorError;
} else if (n == 3) {
dev = makedev_12_12_8(numbers[0], numbers[1], numbers[2]);
if ((unsigned long)major_12_12_8(dev) != numbers[0])
*error = iMajorError;
if ((unsigned long)unit_12_12_8(dev) != numbers[1])
*error = "invalid unit number";
if ((unsigned long)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 */
static const 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);
}