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/* DMAP2HRC.C (c) Copyright Jay Maynard, 2001-2009 */
/* Convert P/390 DEVMAP to Hercules config file */
// $Id: dmap2hrc.c 5125 2009-01-23 12:01:44Z bernard $
/*-------------------------------------------------------------------*/
/* This program reads a P/390 DEVMAP file and extracts the device */
/* definitions from it, then writes them to the standard output in */
/* the format Hercules uses for its .cnf file. */
/*-------------------------------------------------------------------*/
// $Log$
// Revision 1.21 2008/11/04 04:50:46 fish
// Ensure consistent utility startup
//
// Revision 1.20 2007/06/23 00:04:08 ivan
// Update copyright notices to include current year (2007)
//
// Revision 1.19 2006/12/08 09:43:20 jj
// Add CVS message log
//
#include "hstdinc.h"
#include "hercules.h"
/*-------------------------------------------------------------------*/
/* Structure definition for DEVMAP controller record */
/*-------------------------------------------------------------------*/
typedef struct _DEVMAP_CTLR {
BYTE channel; /* High order dev addr byte */
BYTE name[8]; /* Name of controller program*/
BYTE lowdev; /* Low addr byte first dev */
BYTE highdev; /* Low addr byte last dev */
BYTE filler1; /* Fill byte */
BYTE type[4]; /* Type of controller */
BYTE flags; /* Flag byte */
BYTE filler2[47]; /* More filler bytes */
} DEVMAP_CTLR;
/*-------------------------------------------------------------------*/
/* Structure definition for DEVMAP device record */
/*-------------------------------------------------------------------*/
typedef struct _DEVMAP_DEV {
BYTE highaddr; /* High order dev addr byte */
BYTE lowaddr; /* Low order dev addr byte */
char type[4]; /* Type of device */
union {
struct { /* Disk devices: */
BYTE filler1[4]; /* filler */
BYTE volser[6]; /* Volume serial */
BYTE filler2[2]; /* more filler */
char filename[45]; /* name of file on disk */
BYTE flags; /* flag byte */
} disk;
struct { /* Other devices: */
BYTE filler1[7]; /* fill bytes */
char filename[50]; /* device filename */
BYTE flags; /* flag byte */
} other;
} parms;
} DEVMAP_DEV;
/*-------------------------------------------------------------------*/
/* DEVMAP2CNF main entry point */
/*-------------------------------------------------------------------*/
int main (int argc, char *argv[])
{
int i; /* Array subscript */
int len; /* Length of actual read */
char *filename; /* -> Input file name */
int infd = -1; /* Input file descriptor */
DEVMAP_CTLR controller; /* Controller record */
DEVMAP_DEV device; /* Device record */
char output_type[5]; /* Device type to print */
char *output_filename; /* -> filename to print */
int more_devices; /* More devices this ctlr? */
char pathname[MAX_PATH]; /* file path in host format */
INITIALIZE_UTILITY("dmap2hrc");
/* Display the program identification message */
display_version (stderr,
"P/390 DEVMAP to Hercules conversion program\n", FALSE);
/* The only argument is the DEVMAP file name */
if (argc == 2 && argv[1] != NULL)
{
filename = argv[1];
}
else
{
fprintf (stderr,"Usage: dmap2hrc filename\n");
exit (1);
}
/* Open the devmap file */
hostpath(pathname, filename, sizeof(pathname));
infd = open (pathname, O_RDONLY | O_BINARY);
if (infd < 0)
{
fprintf (stderr,"dmap2hrc: Error opening %s: %s\n",
filename, strerror(errno));
exit (2);
}
/* Skip the file header */
for (i = 0; i < 9; i++)
{
len = read (infd, (void *)&controller, sizeof(DEVMAP_CTLR));
if (len < 0)
{
fprintf (stderr,
"dmap2hrc: error reading header records from %s: %s\n",
filename, strerror(errno));
exit (3);
}
}
/* Read records from the input file and convert them */
while (1)
{
/* Read a controller record. */
len = read (infd, (void *)&controller, sizeof(DEVMAP_CTLR));
if (len < 0)
{
fprintf (stderr,
"dmap2hrc: error reading controller record from %s:"
" %s\n",
filename, strerror(errno));
exit (4);
}
/* Did we finish too soon? */
if ((len > 0) && (len < (int)sizeof(DEVMAP_CTLR)))
{
fprintf (stderr,
"dmap2hrc: incomplete controller record on %s\n",
filename);
exit(5);
}
/* Check for end of file. */
if (len == 0)
{
fprintf(stderr, "End of input file.\n");
break;
}
/* Read devices on this controller. */
more_devices = 1;
while (more_devices)
{
/* Read a device record. */
len = read (infd, (void *)&device, sizeof(DEVMAP_DEV));
if (len < 0)
{
fprintf (stderr,
"dmap2hrc: error reading device record from %s:"
" %s\n",
filename, strerror(errno));
exit (6);
}
/* Did we finish too soon? */
if ((len > 0) && (len < (int)sizeof(DEVMAP_DEV)))
{
fprintf (stderr,
"dmap2hrc: incomplete device record on %s\n",
filename);
exit(7);
}
/* Check for end of file. */
if (len == 0)
{
fprintf (stderr,"dmap2hrc: premature end of input file\n");
exit(8);
}
/* Is this the dummy device record at the end of the controller's
set of devices? */
if (strncmp(device.type," ",4) == 0)
{
more_devices = 0;
break;
}
/* It's a real device. Fix the type so Hercules can use it and
locate the output filename. */
strncpy(output_type, device.type, 4);
output_type[4] = '\0';
if (isprint(device.parms.disk.volser[0]))
output_filename = device.parms.disk.filename;
else output_filename = device.parms.other.filename;
if (strncmp(device.type, "3278", 4) == 0)
{
strcpy(output_type, "3270");
output_filename = "";
}
if (strncmp(device.type, "2540", 4) == 0)
strcpy(output_type, "3505");
/* Emit the Hercules config file entry. */
printf("%02X%02X %s",
device.highaddr, device.lowaddr,
output_type);
if (strlen(output_filename) > 0)
printf(" %s", output_filename);
puts(""); /* newline */
} /* end while more_devices) */
} /* end while (1) */
/* Close files and exit */
close (infd);
return 0;
} /* end function main */
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