Python code coverage for Python/dynload_shlib.c

#	count	content
1	n/a
2	n/a	/* Support for dynamic loading of extension modules */
3	n/a
4	n/a	#include "Python.h"
5	n/a	#include "importdl.h"
6	n/a
7	n/a	#include <sys/types.h>
8	n/a	#include <sys/stat.h>
9	n/a
10	n/a	#if defined(__NetBSD__)
11	n/a	#include <sys/param.h>
12	n/a	#if (NetBSD < 199712)
13	n/a	#include <nlist.h>
14	n/a	#include <link.h>
15	n/a	#define dlerror() "error in dynamic linking"
16	n/a	#endif
17	n/a	#endif /* NetBSD */
18	n/a
19	n/a	#ifdef HAVE_DLFCN_H
20	n/a	#include <dlfcn.h>
21	n/a	#endif
22	n/a
23	n/a	#if (defined(__OpenBSD__) \|\| defined(__NetBSD__)) && !defined(__ELF__)
24	n/a	#define LEAD_UNDERSCORE "_"
25	n/a	#else
26	n/a	#define LEAD_UNDERSCORE ""
27	n/a	#endif
28	n/a
29	n/a	/* The .so extension module ABI tag, supplied by the Makefile via
30	n/a	Makefile.pre.in and configure. This is used to discriminate between
31	n/a	incompatible .so files so that extensions for different Python builds can
32	n/a	live in the same directory. E.g. foomodule.cpython-32.so
33	n/a	*/
34	n/a
35	n/a	const char *_PyImport_DynLoadFiletab[] = {
36	n/a	#ifdef __CYGWIN__
37	n/a	".dll",
38	n/a	#else /* !__CYGWIN__ */
39	n/a	"." SOABI ".so",
40	n/a	".abi" PYTHON_ABI_STRING ".so",
41	n/a	".so",
42	n/a	#endif /* __CYGWIN__ */
43	n/a	NULL,
44	n/a	};
45	n/a
46	n/a	static struct {
47	n/a	dev_t dev;
48	n/a	ino_t ino;
49	n/a	void *handle;
50	n/a	} handles[128];
51	n/a	static int nhandles = 0;
52	n/a
53	n/a
54	n/a	dl_funcptr
55	n/a	_PyImport_FindSharedFuncptr(const char *prefix,
56	n/a	const char *shortname,
57	n/a	const char pathname, FILE fp)
58	n/a	{
59	n/a	dl_funcptr p;
60	n/a	void *handle;
61	n/a	char funcname[258];
62	n/a	char pathbuf[260];
63	n/a	int dlopenflags=0;
64	n/a
65	n/a	if (strchr(pathname, '/') == NULL) {
66	n/a	/* Prefix bare filename with "./" */
67	n/a	PyOS_snprintf(pathbuf, sizeof(pathbuf), "./%-.255s", pathname);
68	n/a	pathname = pathbuf;
69	n/a	}
70	n/a
71	n/a	PyOS_snprintf(funcname, sizeof(funcname),
72	n/a	LEAD_UNDERSCORE "%.20s_%.200s", prefix, shortname);
73	n/a
74	n/a	if (fp != NULL) {
75	n/a	int i;
76	n/a	struct _Py_stat_struct status;
77	n/a	if (_Py_fstat(fileno(fp), &status) == -1)
78	n/a	return NULL;
79	n/a	for (i = 0; i < nhandles; i++) {
80	n/a	if (status.st_dev == handles[i].dev &&
81	n/a	status.st_ino == handles[i].ino) {
82	n/a	p = (dl_funcptr) dlsym(handles[i].handle,
83	n/a	funcname);
84	n/a	return p;
85	n/a	}
86	n/a	}
87	n/a	if (nhandles < 128) {
88	n/a	handles[nhandles].dev = status.st_dev;
89	n/a	handles[nhandles].ino = status.st_ino;
90	n/a	}
91	n/a	}
92	n/a
93	n/a	dlopenflags = PyThreadState_GET()->interp->dlopenflags;
94	n/a
95	n/a	handle = dlopen(pathname, dlopenflags);
96	n/a
97	n/a	if (handle == NULL) {
98	n/a	PyObject *mod_name;
99	n/a	PyObject *path;
100	n/a	PyObject *error_ob;
101	n/a	const char *error = dlerror();
102	n/a	if (error == NULL)
103	n/a	error = "unknown dlopen() error";
104	n/a	error_ob = PyUnicode_FromString(error);
105	n/a	if (error_ob == NULL)
106	n/a	return NULL;
107	n/a	mod_name = PyUnicode_FromString(shortname);
108	n/a	if (mod_name == NULL) {
109	n/a	Py_DECREF(error_ob);
110	n/a	return NULL;
111	n/a	}
112	n/a	path = PyUnicode_FromString(pathname);
113	n/a	if (path == NULL) {
114	n/a	Py_DECREF(error_ob);
115	n/a	Py_DECREF(mod_name);
116	n/a	return NULL;
117	n/a	}
118	n/a	PyErr_SetImportError(error_ob, mod_name, path);
119	n/a	Py_DECREF(error_ob);
120	n/a	Py_DECREF(mod_name);
121	n/a	Py_DECREF(path);
122	n/a	return NULL;
123	n/a	}
124	n/a	if (fp != NULL && nhandles < 128)
125	n/a	handles[nhandles++].handle = handle;
126	n/a	p = (dl_funcptr) dlsym(handle, funcname);
127	n/a	return p;
128	n/a	}