|
|
|
ctdbGetResourceDataLength
Retrieves the resource data length.
DECLARATION
VRLEN ctdbDECL ctdbGetResourceDataLength(CTHANDLE resource);
DESCRIPTION
Retrieves the resource data length as the number of bytes occupied by the resource data.
RETURN
EXAMPLE
CTDBRET ReadMyResource(CTHANDLE Handle, ULONG type, ULONG number, ppVOID data, pVRLEN size)
{
CTDBRET eRet;
CTHANDLE hRes = ctdbAllocResource(Handle, type, number, NULL);
/* check the resource handle allocation */
if (hRes == NULL)
{
eRet = ctdbGetError(Handle);
goto Exit;
}
/* get the resource */
if ((eRet = ctdbFindResource(hRes, type, number, NO)) != CTDBRET_OK)
goto Exit;
/* allocate a buffer large enough for the resource data */
*size = ctdbGetResourceDataLength(hRes);
if (*size > 0)
{
*data = (pVOID)malloc(*size);
if (*data == NULL)
{
eRet = CTDBRET_NOMEMORY;
goto Exit;
}
memcpy(*data, ctdbGetResourceData(hRes), *size);
}
Exit:
if (hRes)
ctdbFreeResource(hRes);
return eRet;
}
SEE ALSO
ctdbAllocResource(), ctdbFreeResource(), ctdbAddResource(), ctdbDeleteResource(), ctdbFirstResource(), ctdbNextResource(), ctdbFindResource(), ctdbFindResourceByName(), ctdbGetResourceType(), ctdbSetResourceType(), ctdbGetResourceNumber(), ctdbSetResourceNumber(), ctdbGetResourceName(), ctdbSetResourceName(), ctdbUpdateResource(), ctdbGetResourceData(), ctdbSetResourceData(), ctdbIsResourceLocked(), ctdbUnlockResource()
