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This is a small piece of code that shows how to call get information about a volume with NWGetExtendedVolumeInfo(). It prints the compression status, the volume type (TFS/NSS) and some other information about a volume.

Sample Code

#include <nwdsapi.h>
#include <nwdsconn.h>
#include <nwvol.h>
#include <stdio.h>
#include <stdlib.h>

int main( int argc, char* argv[]) {
   NWDSCCODE         dsccode;
   NWDSContextHandle context;
   NWCCODE           ccode;
   NWCONN_HANDLE     conn_handle;
   nuint16           volNum;
   NWVolExtendedInfo volInfo;
   if ( argc != 3) {
      puts( "Usage: ExtVInfo <server name> <volume name>");
      return EXIT_FAILURE;
   }
   dsccode = NWDSCreateContextHandle( &context);
   if ( dsccode != 0) {
      printf( "NWDSCreateContextHandle failed, dsccode = %x", dsccode);
      return EXIT_FAILURE;
   }
   ccode = NWDSLoginAsServer( context);
   if ( ccode != 0) {
      printf( "NWDSLoginAsServer failed, ccode = %x", ccode);
      NWDSFreeContext( context);
      return EXIT_FAILURE;
   }
   dsccode = NWDSOpenConnToNDSServer( context, argv[ 1], &conn_handle);
   if ( dsccode != 0) {
      printf( "NWDSOpenConnToNDSServer failed, dsccode = %x", dsccode);
      NWDSFreeContext( context);
      return EXIT_FAILURE;
   }
   dsccode = NWDSAuthenticateConn( context, conn_handle);
   if ( dsccode != 0) {
      printf( "NWDSAuthenticateConn failed, dsccode = %x", dsccode);
      NWDSFreeContext( context);
      return EXIT_FAILURE;
   }
   ccode = NWGetVolumeNumber( conn_handle, argv[ 2], &volNum);
   if ( ccode != 0) {
      printf( "NWGetVolumeNumber failed, ccode = %x", ccode);
      NWDSFreeContext( context);
      return EXIT_FAILURE;
   }
   ccode = NWGetExtendedVolumeInfo( conn_handle, volNum, &volInfo);
   if ( ccode != 0) {
      printf( "NWGetExtendedVolumeInfo failed, ccode = %x", ccode);
      NWDSFreeContext( context);
      return EXIT_FAILURE;
   }
   printf( "%s: %s", argv[ 2],
      volInfo.statusFlag & NWCompressionEnabledBit ? "compression enabled" : "compression NOT enabled");
   printf( ", %s\n", volInfo.statusFlag & 0x80000000 ? "NSS" : "traditional");
   printf( "sectorSize              : %lu\n", volInfo.sectorSize);
   printf( "freeableLimboSectors    : %lu\n", volInfo.freeableLimboSectors);
   printf( "nonfreeableLimboSectors : %lu\n", volInfo.nonfreeableLimboSectors);
   NWDSFreeContext( context);
   return EXIT_SUCCESS;
}

--Dmitry Mityugov

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