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/* Support for dynamic loading of extension modules */

#include "dl.h"
#include <errno.h>

#include "Python.h"
#include "importdl.h"

#if defined(__hp9000s300)
#define FUNCNAME_PATTERN "_init%.200s"
#else
#define FUNCNAME_PATTERN "init%.200s"
#endif

const struct filedescr _PyImport_DynLoadFiletab[] = {
	{".sl", "rb", C_EXTENSION},
	{"module.sl", "rb", C_EXTENSION},
	{0, 0}
};

dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
				    const char *pathname, FILE *fp)
{
	dl_funcptr p;
	shl_t lib;
	int flags;
	char funcname[258];

	flags = BIND_FIRST | BIND_DEFERRED;
	if (Py_VerboseFlag) {
		flags = DYNAMIC_PATH | BIND_FIRST | BIND_IMMEDIATE |
			BIND_NONFATAL | BIND_VERBOSE;
		printf("shl_load %s\n",pathname);
	}
	lib = shl_load(pathname, flags, 0);
	/* XXX Chuck Blake once wrote that 0 should be BIND_NOSTART? */
	if (lib == NULL) {
		char buf[256];
		if (Py_VerboseFlag)
			perror(pathname);
		PyOS_snprintf(buf, sizeof(buf), "Failed to load %.200s",
			      pathname);
		PyErr_SetString(PyExc_ImportError, buf);
		return NULL;
	}
	PyOS_snprintf(funcname, sizeof(funcname), FUNCNAME_PATTERN, shortname);
	if (Py_VerboseFlag)
		printf("shl_findsym %s\n", funcname);
	if (shl_findsym(&lib, funcname, TYPE_UNDEFINED, (void *) &p) == -1) {
		shl_unload(lib);
		p = NULL;
	}
	if (p == NULL && Py_VerboseFlag)
		perror(funcname);

	return p;
}
n> 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; }