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 "_init%.200s"
12 #else
13 #define FUNCNAME_PATTERN "init%.200s"
14 #endif
15 
16 const struct filedescr _PyImport_DynLoadFiletab[] = {
17     {SHLIB_EXT, "rb", C_EXTENSION},
18     {"module"SHLIB_EXT, "rb", C_EXTENSION},
19     {0, 0}
20 };
21 
22 dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
23                                     const char *pathname, FILE *fp)
24 {
25     dl_funcptr p;
26     shl_t lib;
27     int flags;
28     char funcname[258];
29 
30     flags = BIND_FIRST | BIND_DEFERRED;
31     if (Py_VerboseFlag) {
32         flags = BIND_FIRST | BIND_IMMEDIATE |
33             BIND_NONFATAL | BIND_VERBOSE;
34         printf("shl_load %s\n",pathname);
35     }
36     lib = shl_load(pathname, flags, 0);
37     /* XXX Chuck Blake once wrote that 0 should be BIND_NOSTART? */
38     if (lib == NULL) {
39         char buf[256];
40         if (Py_VerboseFlag)
41             perror(pathname);
42         PyOS_snprintf(buf, sizeof(buf), "Failed to load %.200s",
43                       pathname);
44         PyErr_SetString(PyExc_ImportError, buf);
45         return NULL;
46     }
47     PyOS_snprintf(funcname, sizeof(funcname), FUNCNAME_PATTERN, shortname);
48     if (Py_VerboseFlag)
49         printf("shl_findsym %s\n", funcname);
50     if (shl_findsym(&lib, funcname, TYPE_UNDEFINED, (void *) &p) == -1) {
51         shl_unload(lib);
52         p = NULL;
53     }
54     if (p == NULL && Py_VerboseFlag)
55         perror(funcname);
56 
57     return p;
58 }
59