Python-2.7.5/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;
}