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s4test.c
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s4test.c
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/*
* s4test.c -- trying things w/s4d
*/
#include <s4d.h>
typedef struct s4_vhbd myvhbd;
typedef struct s4_dfilsys myfilsys;
static void s4_vol_find_fs( s4_vol *vinfo );
static void s4_vol_find_rootdir( s4_vol *vinfo );
static void s4_vol_find_fblks( s4_vol *vinfo );
static void s4_conv_test( s4_vol *d,
int pnum,
int pba,
int lba, int offset,
int track,
int cyl, int pcylsec, int lcylsec,
int head, int hdsec );
static void s4_rll_test(void);
static int tracks_to_test[] = { 0, 7, 8, 15, 16,
632, 633, 634, 635, 636, 637, 639, 640, 769,
-1 };
static int pbas_to_test[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
134, 135, 136, 137, 138, 139, 140,
276, 277, 278, 279, 280,
2008, 2009, 2010, 2011, 2012,
10761, -1 };
static int lbas_to_test[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16, 17,
125, 126, 127, 128, 129, 130, 131, 132,
133, 134, 135, 136, 137, 138, 139,
260, 261, 262,
1890, 1891, 1892,
10110, 10111, 10112, 10113, 10114,
10115, 10116, 10117, 10118, 10119,
10120, 10121, 10122, 10123, 10124,
10125, 10126, 10127, 10128, 10129,
10130, 10131, 10132, 10133, 10134,
-1 };
static int offsets_to_test [] = { 0, 136, 512, 1024,
68608, 69632, 70144,
5500928, 5509632, -1 };
static int fslbas_to_test[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17, 18,
112, 128, 144, 160, 176,
-1 };
int main( int argc, char **argv )
{
char *devfile = argv[1];
s4_vol vinfo;
s4_vol *d = &vinfo;
printf("\nChecking math:\n");
s4_init_vol( "s4test fake", -1, 1024, 8, 512, 17*8, NULL, d );
s4_vol_set_part( d, 0, 0, 8 );
s4_vol_set_part( d, 1, 8, 625 );
s4_vol_set_part( d, 2, 633, 7559 );
d->nparts = 3;
s4_vol_show( d );
printf("\n");
s4_conv_test( d, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );
/* where we think the FS is */
s4_conv_test( d, 2, 10761, 10128, 5509632, 633, 79, 16, 17, 1, 0 );
if( devfile && *devfile )
{
printf("\nLooking for filesystem in %s...\n", devfile );
/* 004 = O_READ */
if( s4_open_vol( devfile, 004, d ) )
{
printf("didn't open %s\n", devfile);
exit( 1 );
}
s4_vol_show( d );
s4_vol_find_fs( d );
s4_vol_find_rootdir( d );
s4_vol_find_fblks( d );
// s4_vol_close( d );
}
s4_rll_test();
return 0;
}
void s4_test_macros(void)
{
int i, lba, pba, fblk, offset, fslba;
int track;
s4_vol vinfo;
s4_vol *d = &vinfo;
s4_filsys filsys;
s4_filsys *fs = &filsys;
printf("Converting TRACK to ...\n");
printf( "Track Offset PBA LBA Cyl CS HD\n");
for( i = 0; (track = tracks_to_test[i]) >= 0 ; i++ )
{
printf(" %5u %8u %5u %5u %4u %3u %3u\n",
track,
TRK_TO_OFFSET( d, track ),
TRK_TO_PBA( d, track ),
TRK_TO_LBA( d, track ),
TRK_TO_CYL( d, track ),
TRK_TO_CYLSEC( d, track ),
TRK_TO_HEAD( d, track )
);
}
printf("\n");
printf("Converting PBA's foo:\n");
printf(" PBA OFFSET LBA TRK CYL HD HS CS\n");
for( i = 0; (pba = pbas_to_test[ i ]) >= 0; i++ )
{
printf("%5u %10u %5u %5u %4u %2u %2u %3u\n",
pba,
PBA_TO_OFFSET( d, pba ),
PBA_TO_VOL_LBA( d, pba ),
PBA_TO_TRK( d, pba ),
PBA_TO_CYL( d, pba ),
PBA_TO_HEAD( d, pba ),
PBA_TO_HDSEC( d, pba ),
PBA_TO_CYLSEC( d, pba ) );
}
printf("pba %d \n", pba);
printf("Converting LBA's:\n");
printf(" LBA PBA TRK CYL HD HS LCS\n");
for( i = 0; (lba = lbas_to_test[ i ]) >= 0; i++ )
{
printf("%6u %6u %5u %4u %2u %2u %3u\n",
lba,
LBA_TO_VOL_PBA( d, lba ),
LBA_TO_TRK( d, lba ),
LBA_TO_CYL( d, lba ),
LBA_TO_HEAD( d, lba ),
LBA_TO_HDSEC( d, lba ),
LBA_TO_CYLSEC( d, lba ) );
}
printf("\n");
printf("Converting offsets's:\n");
printf(" OFFSET PBA CYL TRK HD CS HS\n");
for( i = 0; (offset = offsets_to_test[ i ]) >= 0; i++ )
{
printf("%10u %5u %5u %5u %2u %3u %2u\n",
offset,
OFFSET_TO_PBA( d, offset ),
OFFSET_TO_CYL( d, offset ),
OFFSET_TO_TRK( d, offset ),
OFFSET_TO_HEAD( d, offset ),
OFFSET_TO_CYLSEC( d, offset ),
OFFSET_TO_HDSEC( d, offset ));
}
printf("\n");
fs->vinfo = d;
fs->part = &d->parts[2];
fs->bksz = 1024;
fs->nbb = 0;
fs->bbt = &fs->bbt_fsu.bbt[0];
fs->bbt[0].cyl = 0;
fs->bbt[0].altblk = 0;
fs->bbt[0].nxtind = 0;
fs->bbt[1].cyl = 0;
fs->bbt[1].altblk = 0;
fs->bbt[1].nxtind = 0;
printf("New fake disk info:\n");
s4_vol_show( d );
printf("\n");
fslba = TRK_TO_LBA( d, 633 );
printf("\nFS LBA to ...\n" );
printf( "FSLBA FBLK ABSLBA PBA CYL TRK HD LS PS (* = remapped)\n");
for( i = 0; (lba = fslbas_to_test[i]) >= 0; i++ )
{
fblk = i/2;
pba = LBA_TO_FS_PBA( fs, fslba + lba ),
printf( "%5u %5u %5u %5u %4u %5u %2u %2u %2u%c\n",
lba,
fblk,
lba + fslba,
pba,
LBA_TO_CYL( d, lba ),
LBA_TO_TRK( d, lba ),
LBA_TO_HEAD( d, lba ),
LBA_TO_HDSEC( d, lba ),
PBA_TO_HDSEC( d, pba ),
LBA_TO_HDSEC( d, lba ) != PBA_TO_HDSEC( d, pba ) ? '*' : ' ');
}
return;
}
#define TESTCASE( n, m, d, a, b ) \
{ if ( (x = m( d, a )) != b ) \
{ printf( "%-20s F:%12u != C:%-12u %10d\n", n, x, b, a ); ++errs; } }
/* given canonical values, convert from one to another and check */
static void s4_conv_test( s4_vol *d,
int pnum,
int pba,
int lba,
int offset,
int trk,
int cyl,
int lcylsec,
int pcylsec,
int head,
int hdsec )
{
int x; /* used by TESTCASE macro above */
int errs = 0;
printf("\nconvert: prt:%u p:%8u l:%8u o:%10u t:%5u c:%4u lcs:%3u pcs:%3u h:%2u hs:%2u\n",
pnum, pba, lba, offset, trk, cyl, lcylsec, pcylsec, head, hdsec );
TESTCASE( "PNUM_TO_OFFSET", PNUM_TO_OFFSET, d, pnum, offset );
TESTCASE( "PBA_TO_OFFSET", PBA_TO_OFFSET, d, pba, offset );
TESTCASE( "PBA_TO_TRK", PBA_TO_TRK, d, pba, trk );
TESTCASE( "PBA_TO_CYL", PBA_TO_CYL, d, pba, cyl );
TESTCASE( "PBA_TO_HEAD", PBA_TO_HEAD, d, pba, head );
TESTCASE( "PBA_TO_CYLSEC", PBA_TO_CYLSEC, d, pba, pcylsec );
TESTCASE( "PBA_TO_HDSEC", PBA_TO_HDSEC, d, pba, hdsec );
TESTCASE( "PBA_TO_VOL_LBA", PBA_TO_VOL_LBA, d, pba, lba );
TESTCASE( "LBA_TO_VOL_OFFSET", LBA_TO_VOL_OFFSET, d, lba, offset );
TESTCASE( "LBA_TO_VOL_PBA", LBA_TO_VOL_PBA, d, lba, pba );
TESTCASE( "LBA_TO_TRK", LBA_TO_TRK, d, lba, trk );
TESTCASE( "LBA_TO_CYL", LBA_TO_CYL, d, lba, cyl );
TESTCASE( "LBA_TO_HEAD", LBA_TO_HEAD, d, lba, head );
TESTCASE( "LBA_TO_CYLSEC", LBA_TO_CYLSEC, d, lba, lcylsec );
TESTCASE( "LBA_TO_HDSEC", LBA_TO_HDSEC, d, lba, hdsec );
TESTCASE( "OFFSET_TO_PBA", OFFSET_TO_PBA, d, offset, pba );
TESTCASE( "OFFSET_TO_TRK", OFFSET_TO_TRK, d, offset, trk );
TESTCASE( "OFFSET_TO_CYL", OFFSET_TO_CYL, d, offset, cyl );
TESTCASE( "OFFSET_TO_HEAD", OFFSET_TO_HEAD, d, offset, head );
TESTCASE( "OFFSET_TO_CYLSEC", OFFSET_TO_CYLSEC, d, offset, pcylsec );
TESTCASE( "OFFSET_TO_HDSEC", OFFSET_TO_HDSEC, d, offset, hdsec );
TESTCASE( "TRK_TO_PBA", TRK_TO_PBA, d, trk, pba );
TESTCASE( "TRK_TO_LBA", TRK_TO_LBA, d, trk, lba );
TESTCASE( "TRK_TO_CYL", TRK_TO_CYL, d, trk, cyl );
TESTCASE( "TRK_TO_HEAD", TRK_TO_HEAD, d, trk, head );
TESTCASE( "TRK_TO_CYLSEC", TRK_TO_CYLSEC, d, trk, pcylsec );
TESTCASE( "TRK_TO_OFFSET", TRK_TO_OFFSET, d, trk, offset );
printf("%2d errs: prt:%u p:%8u l:%8u o:%10u t:%5u c:%4u lcs:%3u pcs:%3u h:%2u hs:%2u\n\n",
errs, pnum, pba, lba, offset, trk, cyl, lcylsec, pcylsec, head, hdsec );
}
/* locate possible freelist blocks by inspection */
static void s4_vol_find_fblks( s4_vol *vinfo )
{
int i, j;
char buf[ 512 ];
int offset;
int rv;
int nfree;
int dat;
int nope;
struct s4_fblk *fblk = (struct s4_fblk*)buf;
printf("\nFinding fblks, scanning %d blocks\n", vinfo->pblks);
/* start at very beginning */
for( offset = i = 0; i < vinfo->pblks; i++, offset += vinfo->secsz )
{
rv = s4_seek_read( vinfo->fd, (long)offset, buf, sizeof(buf));
if( rv )
break;
nope = 0;
nfree = s4swapi( fblk->df_nfree );
if( nfree > 0 && nfree < S4_NICFREE )
{
for( j = 0 ; j < S4_NICFREE; j++ )
{
dat = s4swapi( fblk->df_free[ j ] );
if( 0 == dat )
break;
if( dat < 0 && dat > 30000 )
{
/* out of range for valid */
nope = 1;
}
}
if( j != nfree )
{
printf("apparent %3d not viable claimed %3d in lba %u\n",
j, nfree, i );
nope = 0;
}
}
else
{
nope = 1;
}
if( !nope )
{
printf(" off %8u, PBA %5u, cyl %4u csec %3u trk %4u hd %2u hs %2u \n",
offset,
OFFSET_TO_PBA( vinfo, offset ),
OFFSET_TO_CYL( vinfo, offset ),
OFFSET_TO_CYLSEC( vinfo, offset ),
OFFSET_TO_TRK( vinfo, offset ),
OFFSET_TO_HEAD( vinfo, offset ),
OFFSET_TO_HDSEC( vinfo, offset ) );
break;
}
}
printf("Stopped at offset %u, PBA %u\n",
offset, OFFSET_TO_PBA( vinfo, offset ) );
}
static void s4_vol_find_fs( s4_vol *vinfo )
{
int i, j;
int *ip;
char buf[ 512 ];
int offset;
int rv;
int found;
printf("Finding FS the hard way, scanning %d blocks, should be near PBA %d\n",
vinfo->pblks, TRK_TO_PBA( vinfo, vinfo->parts[2].strk ) );
/* start at very beginning */
for( found = offset = i = 0; !found && i < vinfo->pblks; i++, offset += vinfo->secsz )
{
rv = s4_seek_read( vinfo->fd, (long)offset, buf, sizeof(buf));
if( rv )
break;
/* 128 is ints in a 512 byte block */
ip = (int*)buf;
for( j = 0; !found && j < 128 && !found ; j++ )
{
if( S4_FsMAGIC == s4swapi(ip[j]) )
{
printf("\n\nMaybe found in PBA %d %u offset %d at %d!!!\n",
i,
OFFSET_TO_PBA( vinfo, offset),
offset,
(int)(j * sizeof(int)));
printf(" offset %8u, PBA %i %5u, cyl %4u csec %3u trk %4u hd %2u hs %2u\n\n",
offset,
i,
OFFSET_TO_PBA( vinfo, offset ),
OFFSET_TO_CYL( vinfo, offset ),
OFFSET_TO_CYLSEC( vinfo, offset ),
OFFSET_TO_TRK( vinfo, offset ),
OFFSET_TO_HEAD( vinfo, offset ),
OFFSET_TO_HDSEC( vinfo, offset ) );
if( i >= TRK_TO_PBA( vinfo, vinfo->parts[2].strk ) )
found++;
}
}
}
printf("Stopped at offset %u, PBA %u\n",
offset, OFFSET_TO_PBA( vinfo, offset ) );
}
static const char *rootdirs[] =
{
"lost+found",
"mnta",
"mntb",
"UNIX3.5",
"Filecabinet",
NULL
};
static void s4_vol_find_rootdir( s4_vol *vinfo )
{
int pba, fsblk;
char buf[ 512 ];
const char **np;
char *bp;
int hits;
int len;
printf("\nFind ROOTDIR:\n"
"Psrtition 2 starts at track %d, LBAA %d, PBA %d abs offset %d\n",
vinfo->parts[2].strk,
vinfo->parts[2].partlba,
TRK_TO_PBA( vinfo, vinfo->parts[2].strk ),
TRK_TO_OFFSET( vinfo, vinfo->parts[2].strk ) );
fsblk = 0;
for( pba = vinfo->parts[2].partoff/512; pba < vinfo->lblks; pba++, fsblk++ )
{
if( s4_ok != s4_seek_read( vinfo->fd, pba * 512, buf, sizeof(buf) ))
break;
hits = 0;
/* for each name, see if it's in the block */
for( np = rootdirs; *np ; np++ )
{
len = strlen( *np );
for( bp = buf; bp < &buf[ 512 - 18 ]; bp++ )
{
if( !memcmp( bp, *np, len ) )
{
printf("%s found in PBA %d LBAR %d, FBLK %d\n",
*np, pba,
PBA_TO_VOL_LBA( vinfo, pba ) - vinfo->parts[2].partlba,
fsblk / 2 );
hits++;
}
}
}
if( hits > 3 )
{
printf("Absolute offset %d\n", PBA_TO_OFFSET( vinfo, pba ) );
s4dump( buf, sizeof(buf), 0, 0, 0 );
s4_fsu_swap( (s4_fsu*)buf, s4b_dir );
s4_fsu_show( (s4_fsu*)buf, s4b_dir );
break;
}
}
}
static char rll_to_test[] = {
0, 1, 2, 3, 0, 0, 0, 1,
2, 3, 0, 0, 0, 0, 0, 0,
4, 4, 4, 4, 9
};
static void s4_rll_test(void)
{
char ebuf[80];
char pbuf[80];
int olen, elen, plen;
olen = (int)sizeof(rll_to_test);
elen = s4rl_encode( rll_to_test, olen, ebuf, sizeof(ebuf));
printf("\nEncoded: %d\n", elen );
s4dump( ebuf, elen, 0, 16, 0 );
plen = s4rl_decode( ebuf, elen, pbuf, sizeof(pbuf) );
printf("Orig: %d\n", olen);
s4dump( rll_to_test, olen, 0, 16, 0 );
printf("\nDecoded: %d plen\n", plen);
s4dump( pbuf, plen, 0, 16, 0 );
}