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 

    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 }