Purpose

DosQueryModFromEIP queries a module handle and name from a given flat address. It takes a flat 32 bit address as a parameter and returns information about the module (a protect mode application currently executing) owning the storage.

Syntax

#define INCL_DOSMODULEMGR
#include  os2.h>

APIRET APIENTRY DosQueryModFromEIP

(HMODULE *phMod, ULONG *pObjNum, ULONG BuffLen, PCHAR pBuff, ULONG *pOffset, ULONG Address)

Parameters

phMod (PHMODULE) output

Address of a location in which the module handle is returned.
pObjNum (PULONG) output
Address of a ULONG where the module object number corresponding to the Address is returned. The object is zero based.
BuffLen (ULONG) input
Length of the user supplied buffer pointed to by pBuff.
pBuff (PCHAR) output
Address of a user supplied buffer in which the module name is returned.
pOffset (PULONG) output
Address of a where the offset to the object corresponding to the Address is returned. The offset is zero based.
Address (ULONG) input
Input address to be queried.

Returns

ulrc (APIRET) returns

Return Code.

DosQueryModFromEIP returns one of the following values

• NO_ERROR

  87

  ERROR_INVALID_PARAMETER
  487
  ERROR_INVALID_ADDRESS

  Related Functions

  • DosQueryModFromEIP

  • DosSetExceptionHandler

  Example Code

  int main(int argc, char *argv[], char *envp[]){
     HMODULE hMod;
     ULONG ObjNum;
     ULONG Offset;
     ULONG eip;
     APIRET rc;
     char Buff[256];
  
  
     if (argc !=2) {
        printf("QEIP \n");
        return 0;
     } /* endif */
  
     eip = strtoul(argv[1],NULL,0);
  
     rc=DosQueryModFromEIP(  hMod,
                             ObjNum,
                            sizeof(Buff),
                            Buff,
                             Offset,
                            eip);
     if (rc!=0) {
        printf("DosQueryModFromEIP returned rc=%u\n",rc);
        return rc;
     } /* endif */
  
     printf("\nLinear Address  0x%08x\n",eip);
     printf("%s\n",Buff);
     printf("handle  0x%04x\n",hMod);
     printf("Object  0x%08x\n",ObjNum);
     printf("Offset  0x%08x\n",Offset);
  
     return 0;
  }
  

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