source: vendor/python/2.5/Python/dynload_os2.c

/* Support for dynamic loading of extension modules */

#define  INCL_DOSERRORS
#define  INCL_DOSMODULEMGR
#include <os2.h>

#include "Python.h"
#include "importdl.h"


const struct filedescr _PyImport_DynLoadFiletab[] = {
        {".pyd", "rb", C_EXTENSION},
        {".dll", "rb", C_EXTENSION},
        {0, 0}
};

dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
                                    const char *pathname, FILE *fp)
{
        dl_funcptr p;
        APIRET  rc;
        HMODULE hDLL;
        char failreason[256];
        char funcname[258];

        rc = DosLoadModule(failreason,
                           sizeof(failreason),
                           pathname,
                           &hDLL);

        if (rc != NO_ERROR) {
                char errBuf[256];
                PyOS_snprintf(errBuf, sizeof(errBuf),
                              "DLL load failed, rc = %d: %.200s",
                              rc, failreason);
                PyErr_SetString(PyExc_ImportError, errBuf);
                return NULL;
        }

        PyOS_snprintf(funcname, sizeof(funcname), "init%.200s", shortname);
        rc = DosQueryProcAddr(hDLL, 0L, funcname, &p);
        if (rc != NO_ERROR)
                p = NULL; /* Signify Failure to Acquire Entrypoint */
        return p;
}