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/* $Id: VBoxBs2Linker.cpp $ */
/** @file
* VirtualBox Validation Kit - Boot Sector 2 "linker".
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <iprt/types.h>
int main(int argc, char **argv)
{
const char *pszOutput = NULL;
const char **papszInputs = (const char **)calloc(argc, sizeof(const char *));
unsigned cInputs = 0;
/*
* Scan the arguments.
*/
for (int i = 1; i < argc; i++)
{
if (argv[i][0] == '-')
{
const char *pszOpt = &argv[i][1];
if (*pszOpt == '-')
{
/* Convert long options to short ones. */
pszOpt--;
if (!strcmp(pszOpt, "--output"))
pszOpt = "o";
else if (!strcmp(pszOpt, "--version"))
pszOpt = "V";
else if (!strcmp(pszOpt, "--help"))
pszOpt = "h";
else
{
fprintf(stderr, "syntax errro: Unknown options '%s'\n", pszOpt);
free(papszInputs);
return 2;
}
}
/* Process the list of short options. */
while (*pszOpt)
{
switch (*pszOpt++)
{
case 'o':
{
const char *pszValue = pszOpt;
pszOpt = strchr(pszOpt, '\0');
if (*pszValue == '=')
pszValue++;
else if (!*pszValue)
{
if (i + 1 >= argc)
{
fprintf(stderr, "syntax error: The --output option expects a filename.\n");
free(papszInputs);
return 12;
}
pszValue = argv[++i];
}
if (pszOutput)
{
fprintf(stderr, "Only one output file is allowed. You've specified '%s' and '%s'\n",
pszOutput, pszValue);
free(papszInputs);
return 2;
}
pszOutput = pszValue;
pszOpt = "";
break;
}
case 'V':
printf("%s\n", "$Revision: 127855 $");
free(papszInputs);
return 0;
case '?':
case 'h':
printf("usage: %s [options] -o <output> <input1> [input2 ... [inputN]]\n", argv[0]);
free(papszInputs);
return 0;
}
}
}
else
papszInputs[cInputs++] = argv[i];
}
if (!pszOutput)
{
fprintf(stderr, "syntax error: No output file was specified (-o or --output).\n");
free(papszInputs);
return 2;
}
if (cInputs == 0)
{
fprintf(stderr, "syntax error: No input files was specified.\n");
free(papszInputs);
return 2;
}
/*
* Do the job.
*/
/* Open the output file. */
#if defined(RT_OS_OS2) || defined(RT_OS_WINDOWS)
FILE *pOutput = fopen(pszOutput, "wb");
#else
FILE *pOutput = fopen(pszOutput, "w");
#endif
if (!pOutput)
{
fprintf(stderr, "error: Failed to open output file '%s' for writing\n", pszOutput);
free(papszInputs);
return 1;
}
/* Copy the input files to the output file, with sector padding applied. */
int rcExit = 0;
size_t off = 0;
for (unsigned i = 0; i < cInputs && rcExit == 0; i++)
{
#if defined(RT_OS_OS2) || defined(RT_OS_WINDOWS)
FILE *pInput = fopen(papszInputs[i], "rb");
#else
FILE *pInput = fopen(papszInputs[i], "r");
#endif
if (pInput)
{
for (;;)
{
/* Read a block from the input file. */
uint8_t abBuf[4096];
size_t cbRead = fread(abBuf, sizeof(uint8_t), 4096, pInput);
if (!cbRead || ferror(pInput))
break;
/* Padd the end of the file if necessary. */
if (cbRead != 4096 && !feof(pInput))
{
fprintf(stderr, "error: fread returned %u bytes, but we're not at the end of the file yet...\n",
(unsigned)cbRead);
rcExit = 1;
break;
}
if ((cbRead & 0x1ff) != 0)
{
memset(&abBuf[cbRead], 0, 4096 - cbRead);
cbRead = (cbRead + 0x1ff) & ~0x1ffU;
}
/* Write the block to the output file. */
if (fwrite(abBuf, sizeof(uint8_t), cbRead, pOutput) == cbRead)
off += cbRead;
else
{
fprintf(stderr, "error: fwrite failed\n");
rcExit = 1;
break;
}
}
if (ferror(pInput))
{
fprintf(stderr, "error: Error reading '%s'.\n", papszInputs[i]);
rcExit = 1;
}
fclose(pInput);
}
else
{
fprintf(stderr, "error: Failed to open '%s' for reading.\n", papszInputs[i]);
rcExit = 1;
}
}
/* Finally, close the output file (can fail because of buffered data). */
if (fclose(stderr) != 0)
{
fprintf(stderr, "error: Error closing '%s'.\n", pszOutput);
rcExit = 1;
}
fclose(pOutput);
free(papszInputs);
return rcExit;
}
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