/home/mdboom/Work/builds/cpython/Python/dynload_shlib.c
Line | Count | Source (jump to first uncovered line) |
1 | |
2 | /* Support for dynamic loading of extension modules */ |
3 | |
4 | #include "Python.h" |
5 | #include "pycore_interp.h" // _PyInterpreterState.dlopenflags |
6 | #include "pycore_pystate.h" // _PyInterpreterState_GET() |
7 | #include "importdl.h" |
8 | |
9 | #include <sys/types.h> |
10 | #include <sys/stat.h> |
11 | |
12 | #if defined(__NetBSD__) |
13 | #include <sys/param.h> |
14 | #if (NetBSD < 199712) |
15 | #include <nlist.h> |
16 | #include <link.h> |
17 | #define dlerror() "error in dynamic linking" |
18 | #endif |
19 | #endif /* NetBSD */ |
20 | |
21 | #ifdef HAVE_DLFCN_H |
22 | #include <dlfcn.h> |
23 | #endif |
24 | |
25 | #if (defined(__OpenBSD__) || defined(__NetBSD__)) && !defined(__ELF__) |
26 | #define LEAD_UNDERSCORE "_" |
27 | #else |
28 | #define LEAD_UNDERSCORE "" |
29 | #endif |
30 | |
31 | /* The .so extension module ABI tag, supplied by the Makefile via |
32 | Makefile.pre.in and configure. This is used to discriminate between |
33 | incompatible .so files so that extensions for different Python builds can |
34 | live in the same directory. E.g. foomodule.cpython-32.so |
35 | */ |
36 | |
37 | const char *_PyImport_DynLoadFiletab[] = { |
38 | #ifdef __CYGWIN__ |
39 | ".dll", |
40 | #else /* !__CYGWIN__ */ |
41 | "." SOABI ".so", |
42 | #ifdef ALT_SOABI |
43 | "." ALT_SOABI ".so", |
44 | #endif |
45 | ".abi" PYTHON_ABI_STRING ".so", |
46 | ".so", |
47 | #endif /* __CYGWIN__ */ |
48 | NULL, |
49 | }; |
50 | |
51 | |
52 | dl_funcptr |
53 | _PyImport_FindSharedFuncptr(const char *prefix, |
54 | const char *shortname, |
55 | const char *pathname, FILE *fp) |
56 | { |
57 | dl_funcptr p; |
58 | void *handle; |
59 | char funcname[258]; |
60 | char pathbuf[260]; |
61 | int dlopenflags=0; |
62 | |
63 | if (strchr(pathname, '/') == NULL) { Branch (63:9): [True: 1, False: 298]
|
64 | /* Prefix bare filename with "./" */ |
65 | PyOS_snprintf(pathbuf, sizeof(pathbuf), "./%-.255s", pathname); |
66 | pathname = pathbuf; |
67 | } |
68 | |
69 | PyOS_snprintf(funcname, sizeof(funcname), |
70 | LEAD_UNDERSCORE "%.20s_%.200s", prefix, shortname); |
71 | |
72 | if (fp != NULL) { Branch (72:9): [True: 0, False: 299]
|
73 | struct _Py_stat_struct status; |
74 | if (_Py_fstat(fileno(fp), &status) == -1) Branch (74:13): [True: 0, False: 0]
|
75 | return NULL; |
76 | } |
77 | |
78 | dlopenflags = _PyInterpreterState_GET()->dlopenflags; |
79 | |
80 | handle = dlopen(pathname, dlopenflags); |
81 | |
82 | if (handle == NULL) { Branch (82:9): [True: 1, False: 298]
|
83 | PyObject *mod_name; |
84 | PyObject *path; |
85 | PyObject *error_ob; |
86 | const char *error = dlerror(); |
87 | if (error == NULL) Branch (87:13): [True: 0, False: 1]
|
88 | error = "unknown dlopen() error"; |
89 | error_ob = PyUnicode_DecodeLocale(error, "surrogateescape"); |
90 | if (error_ob == NULL) Branch (90:13): [True: 0, False: 1]
|
91 | return NULL; |
92 | mod_name = PyUnicode_FromString(shortname); |
93 | if (mod_name == NULL) { Branch (93:13): [True: 0, False: 1]
|
94 | Py_DECREF(error_ob); |
95 | return NULL; |
96 | } |
97 | path = PyUnicode_DecodeFSDefault(pathname); |
98 | if (path == NULL) { Branch (98:13): [True: 0, False: 1]
|
99 | Py_DECREF(error_ob); |
100 | Py_DECREF(mod_name); |
101 | return NULL; |
102 | } |
103 | PyErr_SetImportError(error_ob, mod_name, path); |
104 | Py_DECREF(error_ob); |
105 | Py_DECREF(mod_name); |
106 | Py_DECREF(path); |
107 | return NULL; |
108 | } |
109 | p = (dl_funcptr) dlsym(handle, funcname); |
110 | return p; |
111 | } |