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