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
_PyImport_GetDynLoadFunc(const char * fqname,const char * shortname,const char * pathname,FILE * fp)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