1
2 /* Support for dynamic loading of extension modules */
3
4 #include "dl.h"
5 #include <errno.h>
6
7 #include "Python.h"
8 #include "importdl.h"
9
10 #if defined(__hp9000s300)
11 #define FUNCNAME_PATTERN "_%.20s_%.200s"
12 #else
13 #define FUNCNAME_PATTERN "%.20s_%.200s"
14 #endif
15
16 const char *_PyImport_DynLoadFiletab[] = {SHLIB_EXT, NULL};
17
_PyImport_FindSharedFuncptr(const char * prefix,const char * shortname,const char * pathname,FILE * fp)18 dl_funcptr _PyImport_FindSharedFuncptr(const char *prefix,
19 const char *shortname,
20 const char *pathname, FILE *fp)
21 {
22 dl_funcptr p;
23 shl_t lib;
24 int flags;
25 char funcname[258];
26
27 flags = BIND_FIRST | BIND_DEFERRED;
28 if (Py_VerboseFlag) {
29 flags = BIND_FIRST | BIND_IMMEDIATE |
30 BIND_NONFATAL | BIND_VERBOSE;
31 printf("shl_load %s\n",pathname);
32 }
33 lib = shl_load(pathname, flags, 0);
34 /* XXX Chuck Blake once wrote that 0 should be BIND_NOSTART? */
35 if (lib == NULL) {
36 char buf[256];
37 PyObject *pathname_ob = NULL;
38 PyObject *buf_ob = NULL;
39 PyObject *shortname_ob = NULL;
40
41 if (Py_VerboseFlag)
42 perror(pathname);
43 PyOS_snprintf(buf, sizeof(buf), "Failed to load %.200s",
44 pathname);
45 buf_ob = PyUnicode_FromString(buf);
46 shortname_ob = PyUnicode_FromString(shortname);
47 pathname_ob = PyUnicode_FromString(pathname);
48 PyErr_SetImportError(buf_ob, shortname_ob, pathname_ob);
49 Py_DECREF(buf_ob);
50 Py_DECREF(shortname_ob);
51 Py_DECREF(pathname_ob);
52 return NULL;
53 }
54 PyOS_snprintf(funcname, sizeof(funcname), FUNCNAME_PATTERN,
55 prefix, shortname);
56 if (Py_VerboseFlag)
57 printf("shl_findsym %s\n", funcname);
58 if (shl_findsym(&lib, funcname, TYPE_UNDEFINED, (void *) &p) == -1) {
59 shl_unload(lib);
60 p = NULL;
61 }
62 if (p == NULL && Py_VerboseFlag)
63 perror(funcname);
64
65 return p;
66 }
67