OS/2 Shareware BBS: 6 File/06-File.zip/dmap00.zip/dmap.c

C/C++ Source or Header | 1993-10-17 | 5.2 KB | 189 lines

/*
 Show names, type, volids, and paths of all drives on the system.
 The default is hard disk only; floppies can be included upon
 request.
 Author: Roger A. McGregor
         Houston, Tx
 Date  : 10/09/93
 Opsys : OS/2 2.0
 Compiles under both EMX C and IBM's's C compilers.

*/
#define INCL_DOSMISC
#define INCL_DOSFILEMGR
#define INCL_DOSDEVICES
#define INCL_DOSERRORS

#ifdef __EMX__
#define INCL_DOSDEVIOCTL
#endif

#include <os2.h>

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>

struct VOLINFO
        {ULONG volser;
         UCHAR label_length;
         CHAR label [12];
         char pad [256];
         };

void do_help(char *prog_name)
{printf("Program: %s  Version 1.0 Oct 9, 1993\n", prog_name);
 printf("Purpose: Displays information about the attached disk drives.\n");
 printf("Optional parameters:\n");
 printf("  ALL  - display will include floppy drives\n");
 printf("  x:   - list of drives; ie. C: E:\n");
 printf("  HELP - this display\n");
 printf("The default is to list all hard drives.\n");
}

void show_volids(short drivenum)
{short i;
char drivename [3];
APIRET rc, rc_volser;
FSQBUFFER2 fsquebuf;
ULONG fsquelen = sizeof(fsquebuf);
struct VOLINFO buf;
char *dtype, *dlabel, *dpath;
ULONG pathnamelen;
char pathname [512];

drivename [0] = drivenum+'A'-1;
drivename [1] =':';
drivename [2] = 0;

dlabel = " ";
pathname [0] = 0;

DosError(0);                         /* Disable hard-error pop-up  */
    /* Get the drive status & volser */
rc_volser = DosQueryFSInfo(drivenum, FSIL_VOLSER, &buf, sizeof(buf));
if((NO_ERROR == rc_volser)
  || (ERROR_FILE_NOT_FOUND == rc_volser)
  || (ERROR_NOT_READY == rc_volser))
   ;
else
   printf("DosQueryFSInfo VOLSER error= %d\n", rc_volser);

if(ERROR_NOT_READY == rc_volser)
    dtype = "Not Rdy";
else
   {
    if(ERROR_NO_VOLUME_LABEL != rc_volser)
      {if(buf.label_length)
         dlabel = (char *)&buf.label;
      }

   /* get type of disk drive */
    rc = DosQueryFSAttach(drivename, 1, 1,
                          &fsquebuf, &fsquelen);
    if((NO_ERROR == rc) || (ERROR_BUFFER_OVERFLOW == rc))
       {
        switch(fsquebuf.iType)
         {case FSAT_CHARDEV :   dtype = "Reschar";
             break;
          case FSAT_PSEUDODEV : dtype = "Pseudo ";
             break;
          case FSAT_LOCALDRV :  dtype = "Local  ";
             break;
          case FSAT_REMOTEDRV : dtype = "Remote ";
             break;
          default :             dtype = "Other  ";
         }
       }
    else
       printf("DosQueryFSAttach error = %d\n", rc);

        /* get the current path on the disk */
    pathnamelen = sizeof(pathname);
    if(0 !=
       (rc = DosQueryCurrentDir(drivenum, pathname, &pathnamelen)))
          printf("DosQueryPathInfo error = %d\n", rc);
   }
DosError(1);                         /* Enable hard-error pop-up   */
printf("%-7s  %s  %-11s %s\n", dtype, drivename, dlabel, pathname);
}

int main(int argc, char **argv)
{
APIRET rc;
ULONG current, disk_mask;
short disk_count, drivenum,
      do_all = 0;
char *request;

request = 0;
if(argc > 1)        /* user requested help, a specific disk, or all */
    {request = (char *)malloc(strlen(argv[1]));
     strcpy(request, argv[1]);
     strupr(request);
     if(!strcmp("HELP", request))
        {do_help(argv[0]);
         return 0;
        }
     if(!strcmp("ALL", request))
        do_all = 1;
     if((2 == strlen(argv [1]))
       && (':' == argv[1][1]))  /* possible disk list */
        do_all = 2;
     free(request);
     request = 0;
     if(0 == do_all)
        {printf("Usage: %s [ALL | C: D: etc | HELP]\n", argv [0]);
         printf("       default is to list all hard drives\n");
         return 0;
        }
    }
if(rc = DosPhysicalDisk(INFO_COUNT_PARTITIONABLE_DISKS,
                        &disk_count, sizeof(disk_count), 0, 0))
    {printf("Error %d obtaining disk count\n", rc);
     exit(4);
    }
printf("%d partitionable disk(s) in system.\n", disk_count);

rc = DosQueryCurrentDisk(¤t, &disk_mask);
printf("Current disk is %c:\n", current+'A'-1);

printf("Type    Disk Label       Path\n");


if(2 == do_all) /* disk list? */
  {for(disk_count = 1; disk_count < argc; ++disk_count)
      {  /* validate the drive name */
       request = argv[disk_count];
       if((2 == strlen(request))
         && (':' == request[1])         /* possible drive letter */
         && (isalpha(request[0])))
           {drivenum = toupper(request[0])-'A'+1;  /* Get the drive number */
            current = 1;
            current <<= drivenum - 1;
            if(current & disk_mask)
                show_volids(drivenum);
            else
                printf("%11s Not mounted or unavailable\n", request);
           }
        else
           printf("%11s is not a valid drive name. Must be A: thru Z:\n",
                  request);
      }
   return 0;
  }

if (1 == do_all)
   drivenum = 1;
else
   {drivenum = 3;
    disk_mask >>= 2;        /* shift out current and A: and B: disks */
   }
for (; disk_mask; ++drivenum, disk_mask >>= 1)
   {
    if(1 & disk_mask)
       show_volids(drivenum);
   }
}