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/* Support for dynamic loading of extension modules */
#include "dl.h"
#include <errno.h>
#include "Python.h"
#include "pycore_importdl.h"
#if defined(__hp9000s300)
#define FUNCNAME_PATTERN "_%.20s_%.200s"
#else
#define FUNCNAME_PATTERN "%.20s_%.200s"
#endif
const char *_PyImport_DynLoadFiletab[] = {SHLIB_EXT, ".sl", NULL};
dl_funcptr _PyImport_FindSharedFuncptr(const char *prefix,
const char *shortname,
const char *pathname, FILE *fp)
{
int flags = BIND_FIRST | BIND_DEFERRED;
int verbose = _Py_GetConfig()->verbose;
if (verbose) {
flags = BIND_FIRST | BIND_IMMEDIATE |
BIND_NONFATAL | BIND_VERBOSE;
printf("shl_load %s\n",pathname);
}
shl_t lib = shl_load(pathname, flags, 0);
/* XXX Chuck Blake once wrote that 0 should be BIND_NOSTART? */
if (lib == NULL) {
if (verbose) {
perror(pathname);
}
char buf[256];
PyOS_snprintf(buf, sizeof(buf), "Failed to load %.200s",
pathname);
PyObject *buf_ob = PyUnicode_DecodeFSDefault(buf);
if (buf_ob == NULL)
return NULL;
PyObject *shortname_ob = PyUnicode_FromString(shortname);
if (shortname_ob == NULL) {
Py_DECREF(buf_ob);
return NULL;
}
PyObject *pathname_ob = PyUnicode_DecodeFSDefault(pathname);
if (pathname_ob == NULL) {
Py_DECREF(buf_ob);
Py_DECREF(shortname_ob);
return NULL;
}
PyErr_SetImportError(buf_ob, shortname_ob, pathname_ob);
Py_DECREF(buf_ob);
Py_DECREF(shortname_ob);
Py_DECREF(pathname_ob);
return NULL;
}
char funcname[258];
PyOS_snprintf(funcname, sizeof(funcname), FUNCNAME_PATTERN,
prefix, shortname);
if (verbose) {
printf("shl_findsym %s\n", funcname);
}
dl_funcptr p;
if (shl_findsym(&lib, funcname, TYPE_UNDEFINED, (void *) &p) == -1) {
shl_unload(lib);
p = NULL;
}
if (p == NULL && verbose) {
perror(funcname);
}
return p;
}
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