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Imported Upstream version 0.79.2

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This commit is contained in:
Rogério Brito
2010-11-06 20:36:40 -02:00
committed by TANIGUCHI Takaki
parent c3da7b4a44
commit bfe15b23fb
855 changed files with 28909 additions and 12770 deletions
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129
debug.c
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@@ -1,5 +1,5 @@
/* dvdisaster: Additional error correction for optical media.
* Copyright (C) 2004-2009 Carsten Gnoerlich.
* Copyright (C) 2004-2010 Carsten Gnoerlich.
* Project home page: http://www.dvdisaster.com
* Email: carsten@dvdisaster.com -or- cgnoerlich@fsfe.org
*
@@ -22,9 +22,7 @@
#include "dvdisaster.h"
#include "rs02-includes.h"
#ifdef HAVE_RS03
#include "rs03-includes.h"
#endif
#include "rs03-includes.h"
#include "udf.h"
#include <time.h>
@@ -274,21 +272,24 @@ static void random_error2(EccHeader *eh, char *prefix, char *arg)
/* RS03 ecc images */
#ifdef HAVE_RS03
static void random_error3(EccHeader *eh, char *prefix, char *arg)
{ RS03Layout *lay;
ImageInfo *ii;
LargeFile *eccfile = NULL;
gint64 si;
guint64 hpos;
guint64 end;
guint64 header[42];
int block_sel[255];
int i,percent,last_percent = 0;
int hidx,n_errors,erase_max = 0;
double eras_scale, blk_scale, hdr_scale;
int n_errors,erase_max = 0;
double eras_scale, blk_scale;
SRandom(Closure->randomSeed);
lay = CalcRS03Layout(uchar_to_gint64(eh->sectors), eh->eccBytes);
/*** Calculate the layout */
if(eh->methodFlags[0] & MFLAG_ECC_FILE)
lay = CalcRS03Layout(uchar_to_gint64(eh->sectors), eh, ECC_FILE);
else lay = CalcRS03Layout(uchar_to_gint64(eh->sectors), eh, ECC_IMAGE);
n_errors = atoi(arg);
@@ -302,50 +303,21 @@ static void random_error3(EccHeader *eh, char *prefix, char *arg)
eras_scale = (n_errors+1)/((double)MY_RAND_MAX+1.0);
blk_scale = (double)255.0/((double)MY_RAND_MAX+1.0);
/*** Open the image file */
ii = OpenImageFile(NULL, WRITEABLE_IMAGE);
PrintLog(_("\nGenerating random correctable erasures (for %d roots, max erasures = %d).\n"), eh->eccBytes, n_errors);
/*** Randomly delete some ecc headers */
header[0] = lay->firstEccHeader;
hidx = 1;
hpos = (lay->lastCrcSector + lay->headerModulo - 1) / lay->headerModulo;
hpos *= lay->headerModulo;
end = lay->eccSectors+lay->dataSectors;
while(hpos < end) /* Calculate positions of all headers */
{
header[hidx++] = hpos;
hpos += lay->headerModulo;
if(lay->target == ECC_FILE)
{ eccfile = LargeOpen(Closure->eccName, O_RDWR, IMG_PERMS);
if(!eccfile)
Stop(_("Could not open %s: %s"),Closure->eccName, strerror(errno));
}
/* Pick one header to remain intact.
Currently this must be one of the repeated headers */
hdr_scale = (double)(hidx-1)/((double)MY_RAND_MAX+1.0);
header[(int)(hdr_scale*(double)Random())+1] = 0;
for(i=0; i<hidx; i++)
{ gint64 s = header[i];
if(s>0)
{ unsigned char missing[2048];
if(!LargeSeek(ii->file, (gint64)(2048*s)))
Stop(_("Failed seeking to sector %lld in image: %s"), s, strerror(errno));
CreateMissingSector(missing, s, ii->mediumFP, FINGERPRINT_SECTOR, NULL);
if(LargeWrite(ii->file, missing, 2048) != 2048)
Stop(_("Failed writing to sector %lld in image: %s"), s, strerror(errno));
}
}
if(lay->target == ECC_FILE)
PrintLog(_("\nRS03 error correction file with %d roots.\n"), eh->eccBytes);
else PrintLog(_("\nRS03 augmented image with %d roots.\n"), eh->eccBytes);
PrintLog(_("Generating at most %d random correctable erasures.\n"), n_errors);
/*** Randomly delete the blocks */
@@ -375,18 +347,35 @@ static void random_error3(EccHeader *eh, char *prefix, char *arg)
for(i=0; i<255; i++)
{ if(block_sel[i])
{ unsigned char missing[2048];
{ LargeFile *file = ii->file;
unsigned char missing[2048];
gint64 s;
s = RS03SectorIndex(lay, i, si);
if(s<0) continue; /* non-existing padding sector */
if(!LargeSeek(ii->file, (gint64)(2048*s)))
if(s == 16) /* FIXME: not implemented */
continue;
if(s == lay->eccHeaderPos || s == lay->eccHeaderPos+1)
continue; /* FIXME: not implemented */
/* Do not write out the virtual padding sectors
in ecc file case */
if(lay->target == ECC_FILE
&& i<=lay->ndata-1
&& s>=lay->dataSectors)
continue;
if(lay->target == ECC_FILE && i>=lay->ndata-1)
file = eccfile;
if(!LargeSeek(file, (gint64)(2048*s)))
Stop(_("Failed seeking to sector %lld in image: %s"), s, strerror(errno));
CreateMissingSector(missing, s, ii->mediumFP, FINGERPRINT_SECTOR, NULL);
if(LargeWrite(ii->file, missing, 2048) != 2048)
if(LargeWrite(file, missing, 2048) != 2048)
Stop(_("Failed writing to sector %lld in image: %s"), s, strerror(errno));
}
}
@@ -403,13 +392,14 @@ static void random_error3(EccHeader *eh, char *prefix, char *arg)
"Otherwise you'll accumulate >= %d erasures/ECC block and the image will be lost.\n"),
n_errors);
if(eccfile)
LargeClose(eccfile);
FreeImageInfo(ii);
g_free(lay);
}
#endif
void RandomError(char *prefix, char *arg)
{ Method *method = EccFileMethod(TRUE);
{ Method *method = EccMethod(TRUE);
char buf[5];
if(!strncmp(method->name, "RS01", 4))
@@ -423,12 +413,11 @@ void RandomError(char *prefix, char *arg)
}
/* FIXME: currently only handles augmented images */
#ifdef HAVE_RS03
if(!strncmp(method->name, "RS03", 4))
{ random_error3(method->lastEh, prefix, arg);
return;
}
#endif
strncpy(buf, method->name, 4); buf[4] = 0;
Stop("Don't know how to handle codec %s\n", buf);
@@ -1292,3 +1281,31 @@ void MergeImages(char *arg, int mode)
LargeClose(left);
LargeClose(right);
}
/*
* Print LaTeX'ed table of Galois fields and other matrices
*/
void LaTeXify(gint32 *table , int rows, int columns)
{ int x,y;
printf("\\begin{tabular}{|l||");
for(x=0; x<columns; x++)
printf("c|");
printf("}\n\\hline\n");
printf("&");
for(x=0; x<columns; x++)
printf("%c %02x ", x==0?' ':'&', x);
printf("\\\\\n\\hline\n\\hline\n");
for(y=0; y<rows; y++)
{ printf("%02x &",16*y);
for(x=0; x<columns; x++)
printf("%c %02x ", x==0?' ':'&', *table++);
printf("\\\\\n\\hline\n");
}
printf("\\end{tabular}\n");
}