mirror of
https://github.com/python/cpython.git
synced 2025-11-04 11:49:12 +00:00
d940054ad4
Python/
dynload_shlib.c // EMX port emulates dlopen() etc. for DL extensions
import.c // changes to support 8.3 DLL name limit (VACPP+EMX)
// and case sensitive import semantics
importdl.h
thread_os2.h
111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
|
|
/* Support for dynamic loading of extension modules */
|
|
|
|
#include "Python.h"
|
|
#include "importdl.h"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#if defined(__NetBSD__)
|
|
#include <sys/param.h>
|
|
#if (NetBSD < 199712)
|
|
#include <nlist.h>
|
|
#include <link.h>
|
|
#define dlerror() "error in dynamic linking"
|
|
#endif
|
|
#endif /* NetBSD */
|
|
|
|
#ifdef HAVE_DLFCN_H
|
|
#include <dlfcn.h>
|
|
#else
|
|
#if defined(PYOS_OS2) && defined(PYCC_GCC)
|
|
#include "dlfcn.h"
|
|
#endif
|
|
#endif
|
|
|
|
#if (defined(__OpenBSD__) || defined(__NetBSD__)) && !defined(__ELF__)
|
|
#define LEAD_UNDERSCORE "_"
|
|
#else
|
|
#define LEAD_UNDERSCORE ""
|
|
#endif
|
|
|
|
|
|
const struct filedescr _PyImport_DynLoadFiletab[] = {
|
|
#ifdef __CYGWIN__
|
|
{".dll", "rb", C_EXTENSION},
|
|
{"module.dll", "rb", C_EXTENSION},
|
|
#else
|
|
#if defined(PYOS_OS2) && defined(PYCC_GCC)
|
|
{".pyd", "rb", C_EXTENSION},
|
|
{".dll", "rb", C_EXTENSION},
|
|
#else
|
|
{".so", "rb", C_EXTENSION},
|
|
{"module.so", "rb", C_EXTENSION},
|
|
#endif
|
|
#endif
|
|
{0, 0}
|
|
};
|
|
|
|
static struct {
|
|
dev_t dev;
|
|
ino_t ino;
|
|
void *handle;
|
|
} handles[128];
|
|
static int nhandles = 0;
|
|
|
|
|
|
dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
|
|
const char *pathname, FILE *fp)
|
|
{
|
|
dl_funcptr p;
|
|
void *handle;
|
|
char funcname[258];
|
|
char pathbuf[260];
|
|
int dlopenflags=0;
|
|
|
|
if (strchr(pathname, '/') == NULL) {
|
|
/* Prefix bare filename with "./" */
|
|
PyOS_snprintf(pathbuf, sizeof(pathbuf), "./%-.255s", pathname);
|
|
pathname = pathbuf;
|
|
}
|
|
|
|
PyOS_snprintf(funcname, sizeof(funcname),
|
|
LEAD_UNDERSCORE "init%.200s", shortname);
|
|
|
|
if (fp != NULL) {
|
|
int i;
|
|
struct stat statb;
|
|
fstat(fileno(fp), &statb);
|
|
for (i = 0; i < nhandles; i++) {
|
|
if (statb.st_dev == handles[i].dev &&
|
|
statb.st_ino == handles[i].ino) {
|
|
p = (dl_funcptr) dlsym(handles[i].handle,
|
|
funcname);
|
|
return p;
|
|
}
|
|
}
|
|
if (nhandles < 128) {
|
|
handles[nhandles].dev = statb.st_dev;
|
|
handles[nhandles].ino = statb.st_ino;
|
|
}
|
|
}
|
|
|
|
#if !(defined(PYOS_OS2) && defined(PYCC_GCC))
|
|
dlopenflags = PyThreadState_Get()->interp->dlopenflags;
|
|
#endif
|
|
|
|
if (Py_VerboseFlag)
|
|
printf("dlopen(\"%s\", %x);\n", pathname, dlopenflags);
|
|
|
|
handle = dlopen(pathname, dlopenflags);
|
|
|
|
if (handle == NULL) {
|
|
PyErr_SetString(PyExc_ImportError, dlerror());
|
|
return NULL;
|
|
}
|
|
if (fp != NULL && nhandles < 128)
|
|
handles[nhandles++].handle = handle;
|
|
p = (dl_funcptr) dlsym(handle, funcname);
|
|
return p;
|
|
}
|