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cckdmap.c
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/* cckdmap.c (C) Copyright "Fish" (David B. Trout), 2019 */
/* Compressed dasd file map */
/* */
/* Released under "The Q Public License Version 1" */
/* (http://www.hercules-390.org/herclic.html) as modifications to */
/* Hercules. */
/*-------------------------------------------------------------------*/
/* This program is a CCKD64 debugging tool that reads a dasd */
/* file and reports the physical sequence of all of its areas, */
/* including free space. The report is in physical file offset */
/* sequence. It allows you to determine not only how many (and */
/* where) all free space gaps are, but also where each track's */
/* data resides, the size of the track data area, where both the */
/* device header and compressed device headers, L1 table and all */
/* L2 tables are located. This allows you to determine whether */
/* the preferred L2 table area (which immediately follows the L1 */
/* table) contains only L2 tables, or whether is also contains */
/* track data or free space, and whether or not all of a file's */
/* L2 tables are where they should be (within the preferred L2 */
/* area). It allows us to determine whether dasdinit created */
/* the file correctly or not and whether cckdcomp compressed */
/* the file correctly or not, and thus whether the cckd garbage */
/* collector's cckd_gc_l2 (Reposition level 2 tables) function */
/* will likely be invoked or not (which is known to be buggy). */
/* */
/* Usage: cckdmap.exe [ -t | -v ] infile */
/* */
/*-------------------------------------------------------------------*/
#include "hstdinc.h"
#include "hercules.h"
#include "dasdblks.h"
#include "devtype.h"
#include "opcode.h"
#include "ccwarn.h"
#define UTILITY_NAME "cckdmap"
#define UTILITY_DESC "Compressed dasd file map"
/*-------------------------------------------------------------------*/
/* Global variables */
/*-------------------------------------------------------------------*/
char* pgm = NULL; /* less any extension (.ext) */
SPCTAB64* spacetab = NULL; /* Spaces table */
int numspace = 0; /* Number of spaces in table */
S32 num_L1tab = 0; /* Number of L1 tab entries */
bool cckd64 = false; /* true = CCKD64 input */
bool swaps_needed = false; /* true = endian swap needed */
bool fba = false; /* true = FBA, false = CKD */
bool shadow = false; /* true = shadow, else base */
bool data = false; /* Consolidated tracks report*/
bool verbose = false; /* Report detailed track info*/
CCKD_DEVHDR cdevhdr32 = {0}; /* CCKD device header */
CCKD_L1ENT* L1tab32 = NULL; /* CCKD Level 1 table */
CCKD_L2ENT L2tab32[256] = {0}; /* CCKD Level 2 table */
CCKD64_DEVHDR cdevhdr = {0}; /* CCKD64 device header */
CCKD64_L1ENT* L1tab = NULL; /* CCKD64 Level 1 table */
CCKD64_L2ENT L2tab[256] = {0}; /* CCKD64 Level 2 table */
/*-------------------------------------------------------------------*/
/* Display command syntax and return -1 */
/*-------------------------------------------------------------------*/
static int syntax()
{
// Usage: %s [ -t | -v ] infile
// infile Input file
// options:
// -t report consolidated track data
// -v verbose (report detailed track data)
WRMSG( HHC03000, "I", pgm );
return -1;
}
/*-------------------------------------------------------------------*/
/* Helper macros */
/*-------------------------------------------------------------------*/
#define SWAP_CCKD64_DEVHDR(p) do if (swaps_needed) cckd64_swapend_chdr( p ); while (0)
#define SWAP_CCKD64_L1TAB(p) do if (swaps_needed) cckd64_swapend_l1( p, num_L1tab ); while (0)
#define SWAP_CCKD64_L2TAB(p) do if (swaps_needed) cckd64_swapend_l2( p ); while (0)
/*-------------------------------------------------------------------*/
/* Convert 32-bit CCKD control block to 64-bit CCKD64 */
/*-------------------------------------------------------------------*/
static void cdevhdr_to_64()
{
if (!cckd64)
{
memcpy( cdevhdr.cdh_vrm, cdevhdr32.cdh_vrm, sizeof( cdevhdr.cdh_vrm ));
memcpy( cdevhdr.cdh_cyls, cdevhdr32.cdh_cyls, sizeof( cdevhdr.cdh_cyls ));
cdevhdr.num_L1tab = cdevhdr32.num_L1tab;
cdevhdr.num_L2tab = cdevhdr32.num_L2tab;
cdevhdr.cdh_opts = cdevhdr32.cdh_opts;
cdevhdr.cdh_size = cdevhdr32.cdh_size;
cdevhdr.cdh_used = cdevhdr32.cdh_used;
cdevhdr.cdh_nullfmt = cdevhdr32.cdh_nullfmt;
cdevhdr.free_off = cdevhdr32.free_off;
cdevhdr.free_total = cdevhdr32.free_total;
cdevhdr.free_largest = cdevhdr32.free_largest;
cdevhdr.free_num = cdevhdr32.free_num;
cdevhdr.free_imbed = cdevhdr32.free_imbed;
cdevhdr.cmp_algo = cdevhdr32.cmp_algo;
cdevhdr.cmp_parm = cdevhdr32.cmp_parm;
}
}
static void L1tab_to_64()
{
if (!cckd64)
{
CCKD_L1ENT* L32 = L1tab32; // input 32
CCKD64_L1ENT* L64 = L1tab; // input 64
S32 i;
for (i=0; i < num_L1tab; ++i)
{
if (L32[i] == CCKD_MAXSIZE)
L64[i] = CCKD64_MAXSIZE;
else
L64[i] = L32[i];
}
}
}
static void L2tab_to_64()
{
if (!cckd64)
{
int i;
for (i=0; i < 256; ++i)
{
if (L2tab32[i].L2_trkoff == CCKD_MAXSIZE)
L2tab[i].L2_trkoff = CCKD64_MAXSIZE;
else
L2tab[i].L2_trkoff = L2tab32[i].L2_trkoff;
L2tab[i].L2_len = L2tab32[i].L2_len;
L2tab[i].L2_size = L2tab32[i].L2_size;
}
}
}
/*-------------------------------------------------------------------*/
/* Determine if running on a big endian system or not */
/*-------------------------------------------------------------------*/
static bool are_big_endian()
{
static union
{
uint32_t ui32;
char b[4];
}
test = {0x01020304};
return (0x01 == test.b[0]);
}
/*-------------------------------------------------------------------*/
/* Determine if endian swaps are going to be needed or not */
/*-------------------------------------------------------------------*/
static bool are_swaps_needed( const CCKD64_DEVHDR* cdevhdr64 )
{
bool running_on_big_endian_system = are_big_endian();
return
(0
|| (1
&& running_on_big_endian_system
&& !(cdevhdr64->cdh_opts & CCKD_OPT_BIGEND)
)
|| (1
&& !running_on_big_endian_system
&& (cdevhdr64->cdh_opts & CCKD_OPT_BIGEND)
)
);
}
/*-------------------------------------------------------------------*/
/* Append new entry to spaces table (array) */
/*-------------------------------------------------------------------*/
#define ADD_SPACE( spc ) \
add_spc_to_table( &spc )
static void add_spc_to_table( SPCTAB64* spc )
{
spacetab = realloc( spacetab, (numspace + 1) * sizeof( SPCTAB64 ));
memcpy( &spacetab[ numspace++ ], spc, sizeof( SPCTAB64 ));
}
/*-------------------------------------------------------------------*/
/* Sort the spaces table */
/*-------------------------------------------------------------------*/
static int sort_spacetab_by_file_offset( const void* a, const void* b )
{
const SPCTAB64 *s1 = a,
*s2 = b;
if (s1->spc_off < s2->spc_off) return -1;
if (s1->spc_off > s2->spc_off) return +1;
if (s1->spc_siz < s2->spc_siz) return -1;
if (s1->spc_siz > s2->spc_siz) return +1;
if (s1->spc_typ < s2->spc_typ) return -1;
if (s1->spc_typ > s2->spc_typ) return +1;
if (s1->spc_val < s2->spc_val) return -1;
if (s1->spc_val > s2->spc_val) return +1;
return 0;
}
/*-------------------------------------------------------------------*/
/* MAIN */
/*-------------------------------------------------------------------*/
int main( int argc, char* argv[] )
{
char* file; /* File name */
char pathname[MAX_PATH]; /* File path in host format */
char str_size [64]; /* Work area for fmt_S64 */
char str_used [64]; /* Work area for fmt_S64 */
char str_total [64]; /* Work area for fmt_S64 */
char str_largest [64]; /* Work area for fmt_S64 */
char track_range [32]; /* Work area for fmt_S64 */
off_t curpos; /* Work: saved file position */
CKDDEV* ckdtab = NULL; /* Device table entry */
FBADEV* fbatab = NULL; /* Device table entry */
CKD_DEVHDR devhdr = {0}; /* CKD device header */
SPCTAB64 spc = {0}; /* Space table entry */
char ser[12+1] = {0}; /* Serial number */
int rc; /* Return code */
int fd; /* File descriptor integer */
int i, k; /* Loop variables */
int tracks; /* Total tracks */
int L1track; /* L1 table track number */
size_t len_size, len_used; /* Return value from fmt_S64 */
size_t len_total, len_largest; /* Return value from fmt_S64 */
U64 seek_total; /* Distance from L2 to track */
U32 active_tracks; /* Total active tracks */
U32 cyls; /* Total cylinders */
U32 heads; /* Heads per cylinder */
U32 trksize; /* Track size */
U32 imgtyp; /* Dasd image format */
U32 size32; /* Work: CCKD I/O size */
U32 size; /* Work: CCKD64 I/O size */
U16 devtype; /* Device type (e.g. 0x3390) */
INITIALIZE_UTILITY( UTILITY_NAME, UTILITY_DESC, &pgm );
/* Parse options */
for (argc--, argv++; argc > 0; argc--, argv++)
{
/* End of options? */
if (argv[0][0] != '-')
break;
if (0
|| strcasecmp( argv[0], "-t" ) == 0
|| strcasecmp( argv[0], "--tracks" ) == 0
)
{
data = true; /* Consolidated tracks report */
verbose = false;
}
else if (0
|| strcasecmp( argv[0], "-v" ) == 0
|| strcasecmp( argv[0], "--verbose" ) == 0
)
{
verbose = true; /* Report detailed track info */
data = false;
}
else
{
// "Unrecognized option: %s"
FWRMSG( stderr, HHC03001, "E", argv[0] );
return syntax();
}
}
/* Parse arguments */
if (argc < 1)
{
// "Missing input-file specification"
FWRMSG( stderr, HHC03002, "E" );
return syntax();
}
if (argc > 1)
{
// "Extraneous parameter: %s"
FWRMSG( stderr, HHC03003, "E", argv[1] );
return syntax();
}
file = argv[0];
// ""
// "%s of: \"%s\""
// ""
WRMSG( HHC03020, "I" );
WRMSG( HHC03021, "I", pgm, file );
/* Open file and verify correct format */
hostpath( pathname, file, sizeof( pathname ));
if ((fd = HOPEN( pathname, O_RDONLY | O_BINARY )) < 0)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "open()", strerror( errno ));
return -1;
}
/* Add an EOF record right away */
if ((curpos = lseek( fd, 0, SEEK_END )) < 0)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "lseek()", strerror( errno ));
return -1;
}
spc.spc_typ = SPCTAB_EOF;
spc.spc_off = curpos;
spc.spc_siz = curpos;
spc.spc_len = curpos;
spc.spc_val = -1;
spc.spc_val2 = -1;
ADD_SPACE( spc );
/* Read the device header */
size = (U32) sizeof( devhdr );
if ((curpos = lseek( fd, 0, SEEK_SET )) < 0)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "lseek()", strerror( errno ));
return -1;
}
if ((rc = read( fd, &devhdr, size )) < (int) size)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "read()", strerror( errno ));
return -1;
}
/* Input must be a compressed type */
if (!((imgtyp = dh_devid_typ( devhdr.dh_devid )) & ANY_CMP_OR_SF_TYP))
{
// "Unsupported dasd image file format"
FWRMSG( stderr, HHC03004, "E" );
return -1;
}
/* Remember whether input is CCKD/CFBA or CCKD64/CFBA64 */
if (imgtyp & ANY64_CMP_OR_SF_TYP)
cckd64 = true;
/* Remember whether input is CFBA/CFBA64 or CCKD/CCKD64 */
if (imgtyp & FBA_CMP_OR_SF_TYP)
fba = true;
/* Remember whether input is shadow or not */
if (imgtyp & ANY_SF_TYP)
shadow = true;
/* Add CKD device header to spaces table */
spc.spc_typ = SPCTAB_DEVHDR;
spc.spc_off = 0;
spc.spc_siz = sizeof( CKD_DEVHDR );
spc.spc_len = sizeof( CKD_DEVHDR );
spc.spc_val = -1;
spc.spc_val2 = -1;
ADD_SPACE( spc );
/* Read the compressed device header */
if (cckd64)
{
// 64-bit CCKD64/CFBA64
size = (U32) sizeof( cdevhdr );
if ((curpos = lseek( fd, CCKD64_DEVHDR_POS, SEEK_SET )) < 0)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "lseek()", strerror( errno ));
return -1;
}
if ((rc = read( fd, &cdevhdr, size )) < (int) size)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "read()", strerror( errno ));
return -1;
}
}
else
{
// 32-bit CCKD/CFBA
size32 = (U32) sizeof( cdevhdr32 );
if ((curpos = lseek( fd, CCKD_DEVHDR_POS, SEEK_SET )) < 0)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "lseek()", strerror( errno ));
return -1;
}
if ((rc = read( fd, &cdevhdr32, size32 )) < (int) size32)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "read()", strerror( errno ));
return -1;
}
/* Convert 32-bit CCKD/CFBA device header to 64-bit CCKD64/CFBA64 */
cdevhdr_to_64();
}
/* Add compressed device header to spaces table */
spc.spc_typ = SPCTAB_CDEVHDR;
spc.spc_off = curpos;
spc.spc_siz = cckd64 ? size : size32;
spc.spc_len = cckd64 ? size : size32;
spc.spc_val = -1;
spc.spc_val2 = -1;
ADD_SPACE( spc );
/* Determine whether endian swaps are going to be needed or not */
swaps_needed = are_swaps_needed( &cdevhdr );
/* Swap compressed device header before processing */
SWAP_CCKD64_DEVHDR( &cdevhdr );
/* Save some values for reporting */
devtype = 0x3300 + devhdr.dh_devtyp;
FETCH_LE_FW( heads, devhdr.dh_heads );
FETCH_LE_FW( trksize, devhdr.dh_trksize );
FETCH_LE_FW( cyls, cdevhdr.cdh_cyls );
if (fba)
// (for fba, cyls is total sectors and tracks is blkgrps)
tracks = (cyls + CFBA_BLKS_PER_GRP - 1) / CFBA_BLKS_PER_GRP;
else
tracks = cyls * heads;
/* Locate the CKD/FBA dasd table entry */
if (fba)
{
if (!(fbatab = dasd_lookup( DASD_FBADEV, NULL, devtype, cyls )))
{
// "Device type %4.4X not found in dasd table"
FWRMSG( stderr, HHC03005, "E", devtype );
return -1;
}
}
else
{
if (!(ckdtab = dasd_lookup( DASD_CKDDEV, NULL, devtype, cyls )))
{
// "Device type %4.4X not found in dasd table"
FWRMSG( stderr, HHC03005, "E", devtype );
return -1;
}
}
/* Report the dasd device header fields */
memcpy( ser, devhdr.dh_serial, sizeof( devhdr.dh_serial ));
if (fba)
{
// dh_devid: %s (%s-bit C%s%s %s)
// dh_heads: %u (total sectors)
// dh_trksize: %u (sector size)
// dh_devtyp: 0x%02.2X (%s)
// dh_fileseq: 0x%02.2X
// dh_highcyl: %u
// dh_serial: %s
WRMSG( HHC03048, "I", dh_devid_str( imgtyp ),
cckd64 ? "64" : "32",
"FBA",
cckd64 ? "64" : "",
shadow ? "shadow file" : "base image",
heads, trksize,
devhdr.dh_devtyp, fbatab->name,
devhdr.dh_fileseq,
fetch_hw( devhdr.dh_highcyl ),
ser );
}
else
{
// dh_devid: %s (%s-bit C%s%s %s)
// dh_heads: %u
// dh_trksize: %u
// dh_devtyp: 0x%02.2X (%s)
// dh_fileseq: 0x%02.2X
// dh_highcyl: %u
// dh_serial: %s
WRMSG( HHC03022, "I", dh_devid_str( imgtyp ),
cckd64 ? "64" : "32",
"CKD",
cckd64 ? "64" : "",
shadow ? "shadow file" : "base image",
heads, trksize,
devhdr.dh_devtyp, ckdtab->name,
devhdr.dh_fileseq,
fetch_hw( devhdr.dh_highcyl ),
ser );
}
/* Report the compressed device header fields */
len_size = fmt_S64( str_size, (S64) cdevhdr.cdh_size );
len_used = fmt_S64( str_used, (S64) cdevhdr.cdh_used );
len_total = fmt_S64( str_total, (S64) cdevhdr.free_total );
len_largest = fmt_S64( str_largest, (S64) cdevhdr.free_largest );
if (fba)
{
// cdh_vrm: %u.%u.%u
// cdh_opts: 0x%02.2X
// num_L1tab: %"PRId32
// num_L2tab: %"PRId32
// cdh_cyls: %"PRIu32" (%"PRIu32" groups)
// cdh_size: 0x%10.10"PRIX64" (%*s bytes)
// cdh_used: 0x%10.10"PRIX64" (%*s bytes)
// free_off: 0x%10.10"PRIX64
// free_total: 0x%10.10"PRIX64" (%*s bytes)
// free_largest: 0x%10.10"PRIX64" (%*s bytes)
// free_num: %"PRId64
// free_imbed: %"PRIu64
// cdh_nullfmt: %u (%s)
// cmp_algo: %u (%s)
// cmp_parm: %"PRId16" %s(%s)
WRMSG( HHC03024, "I"
, (U32) cdevhdr.cdh_vrm[0], (U32) cdevhdr.cdh_vrm[1], (U32) cdevhdr.cdh_vrm[2]
, cdevhdr.cdh_opts
, cdevhdr.num_L1tab
, cdevhdr.num_L2tab
, cyls, tracks
, cdevhdr.cdh_size, (int) max( len_size, len_used ), str_size
, cdevhdr.cdh_used, (int) max( len_used, len_size ), str_used
, cdevhdr.free_off
, cdevhdr.free_total, (int) max( len_total, len_largest ), str_total
, cdevhdr.free_largest, (int) max( len_total, len_largest ), str_largest
, cdevhdr.free_num
, cdevhdr.free_imbed
, (U32) cdevhdr.cdh_nullfmt, cdevhdr.cdh_nullfmt == CKD_NULLTRK_FMT0 ? "ha r0 EOF" :
cdevhdr.cdh_nullfmt == CKD_NULLTRK_FMT1 ? "ha r0" :
cdevhdr.cdh_nullfmt == CKD_NULLTRK_FMT2 ? "linux" : "???"
, (U32) cdevhdr.cmp_algo, !cdevhdr.cmp_algo ? "none" :
(cdevhdr.cmp_algo & CCKD_COMPRESS_ZLIB) ? "zlib" :
(cdevhdr.cmp_algo & CCKD_COMPRESS_BZIP2) ? "bzip2" : "INVALID"
, cdevhdr.cmp_parm
, cdevhdr.cmp_parm < 0 ? "" : " "
, cdevhdr.cmp_parm < 0 ? "default" :
cdevhdr.cmp_parm == 0 ? "none" :
cdevhdr.cmp_parm <= 3 ? "low" :
cdevhdr.cmp_parm <= 6 ? "medium" : "high"
);
}
else
{
// cdh_vrm: %u.%u.%u
// cdh_opts: 0x%02.2X
// num_L1tab: %"PRId32
// num_L2tab: %"PRId32
// cdh_cyls: %"PRIu32" (%"PRIu32" tracks)
// cdh_size: 0x%10.10"PRIX64" (%*s bytes)
// cdh_used: 0x%10.10"PRIX64" (%*s bytes)
// free_off: 0x%10.10"PRIX64
// free_total: 0x%10.10"PRIX64" (%*s bytes)
// free_largest: 0x%10.10"PRIX64" (%*s bytes)
// free_num: %"PRId64
// free_imbed: %"PRIu64
// cdh_nullfmt: %u (%s)
// cmp_algo: %u (%s)
// cmp_parm: %"PRId16" %s(%s)
WRMSG( HHC03023, "I"
, (U32) cdevhdr.cdh_vrm[0], (U32) cdevhdr.cdh_vrm[1], (U32) cdevhdr.cdh_vrm[2]
, cdevhdr.cdh_opts
, cdevhdr.num_L1tab
, cdevhdr.num_L2tab
, cyls, tracks
, cdevhdr.cdh_size, (int) max( len_size, len_used ), str_size
, cdevhdr.cdh_used, (int) max( len_used, len_size ), str_used
, cdevhdr.free_off
, cdevhdr.free_total, (int) max( len_total, len_largest ), str_total
, cdevhdr.free_largest, (int) max( len_total, len_largest ), str_largest
, cdevhdr.free_num
, cdevhdr.free_imbed
, (U32) cdevhdr.cdh_nullfmt, cdevhdr.cdh_nullfmt == CKD_NULLTRK_FMT0 ? "ha r0 EOF" :
cdevhdr.cdh_nullfmt == CKD_NULLTRK_FMT1 ? "ha r0" :
cdevhdr.cdh_nullfmt == CKD_NULLTRK_FMT2 ? "linux" : "???"
, (U32) cdevhdr.cmp_algo, !cdevhdr.cmp_algo ? "none" :
(cdevhdr.cmp_algo & CCKD_COMPRESS_ZLIB) ? "zlib" :
(cdevhdr.cmp_algo & CCKD_COMPRESS_BZIP2) ? "bzip2" : "INVALID"
, cdevhdr.cmp_parm
, cdevhdr.cmp_parm < 0 ? "" : " "
, cdevhdr.cmp_parm < 0 ? "default" :
cdevhdr.cmp_parm == 0 ? "none" :
cdevhdr.cmp_parm <= 3 ? "low" :
cdevhdr.cmp_parm <= 6 ? "medium" : "high"
);
}
/* Save the number of L1 table entries */
num_L1tab = cdevhdr.num_L1tab;
/* Save the size of the L1 table */
size = (U32) (num_L1tab * sizeof( CCKD64_L1ENT ));
size32 = (U32) (num_L1tab * sizeof( CCKD_L1ENT ));
/* Allocate room for the L1 table */
if (!(L1tab = (CCKD64_L1ENT*) calloc( 1, size )))
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "calloc()", strerror( errno ));
return -1;
}
/* Read the L1 table */
if (cckd64)
{
/* Read the L1 table */
if ((curpos = lseek( fd, CCKD64_L1TAB_POS, SEEK_SET )) < 0)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "lseek()", strerror( errno ));
return -1;
}
if ((rc = read( fd, L1tab, size )) < (int) size)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "read()", strerror( errno ));
return -1;
}
}
else // (32-bit CCKD)
{
/* Allocate room for the L1 table */
if (!(L1tab32 = (CCKD_L1ENT*) calloc( 1, size32 )))
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "calloc()", strerror( errno ));
return -1;
}
/* Read the L1 table */
if ((curpos = lseek( fd, CCKD_L1TAB_POS, SEEK_SET )) < 0)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "lseek()", strerror( errno ));
return -1;
}
if ((rc = read( fd, L1tab32, size32 )) < (int) size32)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "read()", strerror( errno ));
return -1;
}
/* Convert 32-bit L1 table to 64-bit CCKD64 */
L1tab_to_64();
free( L1tab32 );
L1tab32 = NULL;
}
/* Swap the L1 table before processing it */
SWAP_CCKD64_L1TAB( L1tab );
/* Add the L1 table to spaces table */
spc.spc_typ = SPCTAB_L1;
spc.spc_off = curpos;
spc.spc_siz = cckd64 ? size : size32;
spc.spc_len = cckd64 ? size : size32;
spc.spc_val = 0;
spc.spc_val2 = tracks - 1;
ADD_SPACE( spc );
/* Get past L1 table to where L2 tables should start */
curpos += (cckd64 ? size : size32);
/* Add the calculated L2 tables LOWER bounds to spaces table */
spc.spc_typ = SPCTAB_L2LOWER;
spc.spc_off = curpos;
spc.spc_siz = 0;
spc.spc_len = 0;
spc.spc_val = -1;
spc.spc_val2 = -1;
ADD_SPACE( spc );
/* Save the size of each L2 table */
size = (U32) sizeof( L2tab );
size32 = (U32) sizeof( L2tab32 );
/* Add the calculated L2 tables UPPER bounds to spaces table */
spc.spc_typ = SPCTAB_L2UPPER;
spc.spc_off = curpos + (num_L1tab * (cckd64 ? size : size32));
spc.spc_siz = 0;
spc.spc_len = 0;
spc.spc_val = -1;
spc.spc_val2 = -1;
ADD_SPACE( spc );
/* Read in all of the L2 tables */
for (i=0; i < num_L1tab; i++)
{
L1track = (i * 256);
/* Skip non-existent L2 tables */
if (0
|| L1tab[i] == 0
|| L1tab[i] == ULLONG_MAX
)
continue; // (skip non-existent L2 table)
/* Read this L2 table */
if ((curpos = lseek( fd, L1tab[i], SEEK_SET )) < 0)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "lseek()", strerror( errno ));
return -1;
}
if (cckd64)
{
if ((rc = read( fd, L2tab, size )) < (int) size)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "read()", strerror( errno ));
return -1;
}
}
else // (32-bit CCKD)
{
if ((rc = read( fd, L2tab32, size32 )) < (int) size32)
{
// "%s error: %s"
FWRMSG( stderr, HHC03006, "E", "read()", strerror( errno ));
return -1;
}
/* Convert 32-bit L2 table to 64-bit CCKD64 */
L2tab_to_64();
}
/* Swap the L2 table before processing it */
SWAP_CCKD64_L2TAB( L2tab );
/* Add this L2 table to the spaces table */
spc.spc_typ = SPCTAB_L2;
spc.spc_off = curpos;
spc.spc_siz = cckd64 ? size : size32;
spc.spc_len = cckd64 ? size : size32;
spc.spc_val = L1track;
spc.spc_val2 = L1track + 256 - 1;
ADD_SPACE( spc );
/* Add all track data to the table */
for (k=0; k < 256 && (L1track + k) < tracks; ++k)
{
if (0
|| L2tab[k].L2_trkoff == 0
|| L2tab[k].L2_trkoff == ULLONG_MAX
)
continue; // (skip non-existent tracks)
/* Add this track's offset to the table */
spc.spc_typ = fba ? SPCTAB_BLKGRP : SPCTAB_TRK;
spc.spc_off = L2tab[k].L2_trkoff;
spc.spc_siz = L2tab[k].L2_size;
spc.spc_len = L2tab[k].L2_len;
spc.spc_val = L1track + k;
spc.spc_val2 = L1track + k;
ADD_SPACE( spc );
}
}
/* Close input file */
close( fd );
/* Scan for free space and add to table */
do
{
/* Sort table by file offset */
qsort( spacetab, numspace, sizeof( SPCTAB64 ), sort_spacetab_by_file_offset );
/* Find gaps */
for (i=0; i < numspace && spacetab[i].spc_typ != SPCTAB_EOF; ++i)
{
if (0
|| !spacetab[i].spc_siz
|| (spacetab[i].spc_off + spacetab[i].spc_siz) >= spacetab[i+1].spc_off
)
continue;
/* Add free space entry */
spc.spc_typ = SPCTAB_FREE;
spc.spc_off = (spacetab[i].spc_off + spacetab[i].spc_siz);
spc.spc_siz = spacetab[i+1].spc_off - (spacetab[i].spc_off + spacetab[i].spc_siz);
spc.spc_len = spacetab[i+1].spc_off - (spacetab[i].spc_off + spacetab[i].spc_siz);
spc.spc_val = -1;
spc.spc_val2 = -1;
ADD_SPACE( spc );
break;
}
}
while (spacetab[i].spc_typ != SPCTAB_EOF);
/* Consolidate track data unless detailed track report wanted */
if (!verbose)
{
/* Find contiguous track entries... */
for (i=0; i < numspace && spacetab[i].spc_typ != SPCTAB_EOF; ++i)
{
/* Find next unconsolidated track entry... */
if (spacetab[i].spc_typ != (fba ? SPCTAB_BLKGRP : SPCTAB_TRK))
continue;
/* We found a track entry. Consolidate all
following track entries into this one. */
spacetab[i].spc_typ = SPCTAB_DATA;
for (k = i + 1; k < numspace; ++k)
{
/* Is this a track entry immediately following the first? */
if (spacetab[k].spc_typ != (fba ? SPCTAB_BLKGRP : SPCTAB_TRK))
break;
/* Consolidate this track's data into first */
spacetab[i].spc_siz += spacetab[k].spc_siz;
spacetab[i].spc_len += spacetab[k].spc_len;
/* Mark track as having been consolidated */
spacetab[k].spc_typ = SPCTAB_NONE;
}
}
}
/* Print the map... */
if (fba)
{
// ""
// " File offset Size (hex) Size group(s)"
// ""
WRMSG( HHC03020, "I" );
WRMSG( HHC03020, "I" );
WRMSG( HHC03047, "I" );
WRMSG( HHC03020, "I" );
}
else
{
// ""
// " File offset Size (hex) Size track(s)"
// ""
WRMSG( HHC03020, "I" );
WRMSG( HHC03020, "I" );
WRMSG( HHC03040, "I" );
WRMSG( HHC03020, "I" );
}
for (i=0; i < numspace; ++i)
{
if (0
|| (spacetab[i].spc_typ == SPCTAB_NONE)
|| (spacetab[i].spc_typ == SPCTAB_DATA && !data)
|| (spacetab[i].spc_typ == (fba ? SPCTAB_BLKGRP : SPCTAB_TRK) && !verbose)
)
continue; // (skip this entry)
if (0
|| spacetab[i].spc_typ == SPCTAB_L2LOWER
|| spacetab[i].spc_typ == SPCTAB_L2UPPER
)
// "***********************************************************"
WRMSG( HHC03041, "I" );
/* Track number or track range */
track_range[0] = 0;
if (spacetab[i].spc_typ != SPCTAB_DATA)
{
if (spacetab[i].spc_val != spacetab[i].spc_val2)
MSGBUF( track_range, " %"PRId32" - %"PRId32, spacetab[i].spc_val, spacetab[i].spc_val2 );
else if (spacetab[i].spc_val >= 0)
MSGBUF( track_range, " %"PRId32, spacetab[i].spc_val );
}
// "%-8s 0x%10.10"PRIX64" 0x%10.10"PRIX64" %11"PRIu64"%s"
WRMSG( HHC03042, "I", spc_typ_to_str( spacetab[i].spc_typ ),
spacetab[i].spc_off, spacetab[i].spc_siz ,spacetab[i].spc_siz,
RTRIM( track_range ));
}
/* Calculate average distance from each L2 table to its tracks (or blkgrps) */
seek_total = 0;
active_tracks = 0;
for (i=0; i < numspace && spacetab[i].spc_typ != SPCTAB_EOF; ++i)
{
/* Locate next L2 table entry */
if (spacetab[i].spc_typ != SPCTAB_L2)
continue;
/* Save starting track number for this L2 table */
L1track = spacetab[i].spc_val;
/* Find all tracks for this L2 table */
for (k=0; k < numspace && spacetab[k].spc_typ != SPCTAB_EOF; ++k)
{
if ((0
|| spacetab[k].spc_typ == SPCTAB_TRK
|| spacetab[k].spc_typ == SPCTAB_BLKGRP
|| spacetab[k].spc_typ == SPCTAB_DATA
|| spacetab[k].spc_typ == SPCTAB_NONE
)
&& (1
&& spacetab[k].spc_val >= (L1track + 0)
&& spacetab[k].spc_val < (L1track + 256)
&& spacetab[k].spc_val < (tracks)
))
{
/* Count active track */
active_tracks++;
/* Calculate this track's distance from its L2 table */
if ( spacetab[i].spc_off > spacetab[k].spc_off)
seek_total += (spacetab[i].spc_off - spacetab[k].spc_off);
else seek_total += (spacetab[k].spc_off - spacetab[i].spc_off);
}
}
}
if (fba)
{
// ""
// "Total active blkgrps = %"PRIu32" tracks"
// "Average L2-to-group seek = %.3f MB"
// ""
WRMSG( HHC03020, "I" );
WRMSG( HHC03045, "I", active_tracks );
WRMSG( HHC03046, "I", (((double) seek_total)/((double) active_tracks)) / (1024.0 * 1024.0) );
WRMSG( HHC03020, "I" );
}
else
{
// ""
// "Total active tracks = %"PRIu32" tracks"
// "Average L2-to-track seek = %.3f MB"
// ""
WRMSG( HHC03020, "I" );
WRMSG( HHC03043, "I", active_tracks );
WRMSG( HHC03044, "I", (((double) seek_total)/((double) active_tracks)) / (1024.0 * 1024.0) );
WRMSG( HHC03020, "I" );
}
/* DONE! */
return 0;
}