Groups: DOSFILEMGR

UNI declaration:

function DosQueryCurrentDir(in disknum: ULONG; in pBuf: pointer; inout pcbBuf: ULONG): APIRET;

Queries current directory of corresponding drive. This function returns value set by DosSetCurrentDir or by OS2Server during execution.

Parameters:

• drivenum zero-based drive number (A: - 0, B: - 1, C: - 2,…)
• pBuf pointer to buffer
• cbBuf length of passed buffer on input and length of returned ASCIIZ string (without zero on end of file)

Return codes:

• NO_ERROR
• ERROR_INVALID_DRIVE
• ERROR_NOT_DOS_DISK
• ERROR_DRIVE_LOCKED
• ERROR_BUFFER_OVERFLOW

For a full list of error codes, see Errors.

#define INCL_DOSFILEMGR   /* File Manager values */
#define INCL_DOSERRORS    /* DOS Error values    */
#include <os2.h>
#include <stdio.h>
#include <string.h>
 
int main(VOID) {
   UCHAR   achOrigDirName[256] = "";            /* Original directory name  */
   UCHAR   achNewDirName[256]  = "\\TEMPPROG";  /* New directory to create  */
   UCHAR   achDirName[256]     = "";          /* Directory name for queries */
   ULONG   cbDirPathLen    = 0;               /* Length of directory path   */
   PEAOP2  pEABuf       = NULL;   /* Extended Attribute buffer pointer      */
   ULONG   ulDriveNum   = 0;      /* Drive number: current=0, A=1, B=2, ... */
   APIRET  rc           = NO_ERROR;      /* Return code                     */
 
   cbDirPathLen = (ULONG) sizeof(achOrigDirName);
   rc = DosQueryCurrentDir(ulDriveNum, achOrigDirName, &cbDirPathLen);
 
   if (rc != NO_ERROR) {
      printf("DosQueryCurrentDir error: return code = %u\n", rc);
      return 1;
   } else printf ("Original dir. = \\%s\n", achOrigDirName);
 
   pEABuf = NULL;  /* Indicate no EAs are to be defined for the directory  */
   rc = DosCreateDir(achNewDirName, pEABuf);   /* Create the new directory */
 
   if (rc != NO_ERROR) {
      printf("DosCreateDir error: return code = %u\n", rc);
      return 1;
   }
 
   rc = DosSetCurrentDir (achNewDirName);   /* Change to new directory     */
 
   ulDriveNum = 0;
   cbDirPathLen = (ULONG) sizeof(achDirName);
   rc = DosQueryCurrentDir(ulDriveNum, achDirName, &cbDirPathLen);
 
   if (rc != NO_ERROR) {
      printf("DosQueryCurrentDir error: return code = %u\n", rc);
      return 1;
   } else printf ("Current dir.  = \\%s\n", achDirName);
 
   strcpy(achDirName,"\\");
 
   rc = DosSetCurrentDir (achDirName);     /* Change to root directory     */
   rc = DosDeleteDir (achNewDirName);      /* Delete the new directory     */
 
   return NO_ERROR;
}