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The old platform-specific contents of importdl.c, broken down into one 

file per platform (really: per style of Dl API; e.g. all platforms
using dlopen() are grouped together in dynload_shlib.c.).

This is part of a set of patches by Greg Stein.
This commit is contained in:
Guido van Rossum 1999-12-20 21:18:49 +00:00
parent 72badf5404
commit 22a1d3671b
10 changed files with 1347 additions and 0 deletions
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235
Python/dynload_aix.c Normal file
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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Support for dynamic loading of extension modules */
#include <ctype.h> /* for isdigit() */
#include <errno.h> /* for global errno */
#include <string.h> /* for strerror() */
#include <stdlib.h> /* for malloc(), free() */
#include <sys/ldr.h>
#include "Python.h"
#include "importdl.h"
#ifdef AIX_GENUINE_CPLUSPLUS
#include "/usr/lpp/xlC/include/load.h"
#define aix_load loadAndInit
#else
#define aix_load load
#endif
extern char *Py_GetProgramName();
typedef struct Module {
struct Module *next;
void *entry;
} Module, *ModulePtr;
const struct filedescr _PyImport_DynLoadFiletab[] = {
{".so", "rb", C_EXTENSION},
{"module.so", "rb", C_EXTENSION},
{0, 0}
};
static int
aix_getoldmodules(modlistptr)
void **modlistptr;
{
register ModulePtr modptr, prevmodptr;
register struct ld_info *ldiptr;
register char *ldibuf;
register int errflag, bufsize = 1024;
register unsigned int offset;
char *progname = Py_GetProgramName();
/*
-- Get the list of loaded modules into ld_info structures.
*/
if ((ldibuf = malloc(bufsize)) == NULL) {
PyErr_SetString(PyExc_ImportError, strerror(errno));
return -1;
}
while ((errflag = loadquery(L_GETINFO, ldibuf, bufsize)) == -1
&& errno == ENOMEM) {
free(ldibuf);
bufsize += 1024;
if ((ldibuf = malloc(bufsize)) == NULL) {
PyErr_SetString(PyExc_ImportError, strerror(errno));
return -1;
}
}
if (errflag == -1) {
PyErr_SetString(PyExc_ImportError, strerror(errno));
return -1;
}
/*
-- Make the modules list from the ld_info structures.
*/
ldiptr = (struct ld_info *)ldibuf;
prevmodptr = NULL;
do {
if (strstr(progname, ldiptr->ldinfo_filename) == NULL &&
strstr(ldiptr->ldinfo_filename, "python") == NULL) {
/*
-- Extract only the modules belonging to the main
-- executable + those containing "python" as a
-- substring (like the "python[version]" binary or
-- "libpython[version].a" in case it's a shared lib).
*/
offset = (unsigned int)ldiptr->ldinfo_next;
ldiptr = (struct ld_info *)((unsigned int)
ldiptr + offset);
continue;
}
if ((modptr = (ModulePtr)malloc(sizeof(Module))) == NULL) {
PyErr_SetString(PyExc_ImportError, strerror(errno));
while (*modlistptr) {
modptr = (ModulePtr)*modlistptr;
*modlistptr = (void *)modptr->next;
free(modptr);
}
return -1;
}
modptr->entry = ldiptr->ldinfo_dataorg;
modptr->next = NULL;
if (prevmodptr == NULL)
*modlistptr = (void *)modptr;
else
prevmodptr->next = modptr;
prevmodptr = modptr;
offset = (unsigned int)ldiptr->ldinfo_next;
ldiptr = (struct ld_info *)((unsigned int)ldiptr + offset);
} while (offset);
free(ldibuf);
return 0;
}
static int
aix_bindnewmodule(newmoduleptr, modlistptr)
void *newmoduleptr;
void *modlistptr;
{
register ModulePtr modptr;
/*
-- Bind the new module with the list of loaded modules.
*/
for (modptr = (ModulePtr)modlistptr; modptr; modptr = modptr->next)
if (loadbind(0, modptr->entry, newmoduleptr) != 0)
return -1;
return 0;
}
static void
aix_loaderror(pathname)
char *pathname;
{
char *message[1024], errbuf[1024];
register int i,j;
struct errtab {
int errNo;
char *errstr;
} load_errtab[] = {
{L_ERROR_TOOMANY, "too many errors, rest skipped."},
{L_ERROR_NOLIB, "can't load library:"},
{L_ERROR_UNDEF, "can't find symbol in library:"},
{L_ERROR_RLDBAD,
"RLD index out of range or bad relocation type:"},
{L_ERROR_FORMAT, "not a valid, executable xcoff file:"},
{L_ERROR_MEMBER,
"file not an archive or does not contain requested member:"},
{L_ERROR_TYPE, "symbol table mismatch:"},
{L_ERROR_ALIGN, "text alignment in file is wrong."},
{L_ERROR_SYSTEM, "System error:"},
{L_ERROR_ERRNO, NULL}
};
#define LOAD_ERRTAB_LEN (sizeof(load_errtab)/sizeof(load_errtab[0]))
#define ERRBUF_APPEND(s) strncat(errbuf, s, sizeof(errbuf)-strlen(errbuf)-1)
sprintf(errbuf, "from module %.200s ", pathname);
if (!loadquery(L_GETMESSAGES, &message[0], sizeof(message))) {
ERRBUF_APPEND(strerror(errno));
ERRBUF_APPEND("\n");
}
for(i = 0; message[i] && *message[i]; i++) {
int nerr = atoi(message[i]);
for (j=0; j<LOAD_ERRTAB_LEN ; j++) {
if (nerr == load_errtab[j].errNo && load_errtab[j].errstr)
ERRBUF_APPEND(load_errtab[j].errstr);
}
while (isdigit(*message[i])) message[i]++ ;
ERRBUF_APPEND(message[i]);
ERRBUF_APPEND("\n");
}
errbuf[strlen(errbuf)-1] = '\0'; /* trim off last newline */
PyErr_SetString(PyExc_ImportError, errbuf);
return;
}
dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname,
const char *pathname, FILE *fp)
{
dl_funcptr p;
/*
-- Invoke load() with L_NOAUTODEFER leaving the imported symbols
-- of the shared module unresolved. Thus we have to resolve them
-- explicitely with loadbind. The new module is loaded, then we
-- resolve its symbols using the list of already loaded modules
-- (only those that belong to the python executable). Get these
-- with loadquery(L_GETINFO).
*/
static void *staticmodlistptr = NULL;
if (!staticmodlistptr)
if (aix_getoldmodules(&staticmodlistptr) == -1)
return NULL;
p = (dl_funcptr) aix_load(pathname, L_NOAUTODEFER, 0);
if (p == NULL) {
aix_loaderror(pathname);
return NULL;
}
if (aix_bindnewmodule((void *)p, staticmodlistptr) == -1) {
aix_loaderror(pathname);
return NULL;
}
return p;
}

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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Support for dynamic loading of extension modules */
#include <kernel/image.h>
#include <kernel/OS.h>
#include <stdlib.h>
#include <unistd.h>
#include "Python.h"
#include "importdl.h"
const struct filedescr _PyImport_DynLoadFiletab[] = {
{".so", "rb", C_EXTENSION},
{"module.so", "rb", C_EXTENSION},
{0, 0}
};
#if defined(MAXPATHLEN) && !defined(_SYS_PARAM_H)
#undef MAXPATHLEN
#endif
#ifdef WITH_THREAD
#include "pythread.h"
static PyThread_type_lock beos_dyn_lock;
#endif
static PyObject *beos_dyn_images = NULL;
/* ----------------------------------------------------------------------
* BeOS dynamic loading support
*
* This uses shared libraries, but BeOS has its own way of doing things
* (much easier than dlfnc.h, from the look of things). We'll use a
* Python Dictionary object to store the images_ids so we can be very
* nice and unload them when we exit.
*
* Note that this is thread-safe. Probably irrelevent, because of losing
* systems... Python probably disables threads while loading modules.
* Note the use of "probably"! Better to be safe than sorry. [chrish]
*
* As of 1.5.1 this should also work properly when you've configured
* Python without thread support; the 1.5 version required it, which wasn't
* very friendly. Note that I haven't tested it without threading... why
* would you want to avoid threads on BeOS? [chrish]
*
* As of 1.5.2, the PyImport_BeImageID() function has been removed; Donn
* tells me it's not necessary anymore because of PyCObject_Import().
* [chrish]
*/
/* Whack an item; the item is an image_id in disguise, so we'll call
* unload_add_on() for it.
*/
static void beos_nuke_dyn( PyObject *item )
{
status_t retval;
if( item ) {
image_id id = (image_id)PyInt_AsLong( item );
retval = unload_add_on( id );
}
}
/* atexit() handler that'll call unload_add_on() for every item in the
* dictionary.
*/
static void beos_cleanup_dyn( void )
{
if( beos_dyn_images ) {
int idx;
int list_size;
PyObject *id_list;
#ifdef WITH_THREAD
PyThread_acquire_lock( beos_dyn_lock, 1 );
#endif
id_list = PyDict_Values( beos_dyn_images );
list_size = PyList_Size( id_list );
for( idx = 0; idx < list_size; idx++ ) {
PyObject *the_item;
the_item = PyList_GetItem( id_list, idx );
beos_nuke_dyn( the_item );
}
PyDict_Clear( beos_dyn_images );
#ifdef WITH_THREAD
PyThread_free_lock( beos_dyn_lock );
#endif
}
}
/*
* Initialize our dictionary, and the dictionary mutex.
*/
static void beos_init_dyn( void )
{
/* We're protected from a race condition here by the atomic init_count
* variable.
*/
static int32 init_count = 0;
int32 val;
val = atomic_add( &init_count, 1 );
if( beos_dyn_images == NULL && val == 0 ) {
beos_dyn_images = PyDict_New();
#ifdef WITH_THREAD
beos_dyn_lock = PyThread_allocate_lock();
#endif
atexit( beos_cleanup_dyn );
}
}
/*
* Add an image_id to the dictionary; the module name of the loaded image
* is the key. Note that if the key is already in the dict, we unload
* that image; this should allow reload() to work on dynamically loaded
* modules (super-keen!).
*/
static void beos_add_dyn( char *name, image_id id )
{
int retval;
PyObject *py_id;
if( beos_dyn_images == NULL ) {
beos_init_dyn();
}
#ifdef WITH_THREAD
retval = PyThread_acquire_lock( beos_dyn_lock, 1 );
#endif
/* If there's already an object with this key in the dictionary,
* we're doing a reload(), so let's nuke it.
*/
py_id = PyDict_GetItemString( beos_dyn_images, name );
if( py_id ) {
beos_nuke_dyn( py_id );
retval = PyDict_DelItemString( beos_dyn_images, name );
}
py_id = PyInt_FromLong( (long)id );
if( py_id ) {
retval = PyDict_SetItemString( beos_dyn_images, name, py_id );
}
#ifdef WITH_THREAD
PyThread_release_lock( beos_dyn_lock );
#endif
}
dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname,
const char *pathname, FILE *fp)
{
dl_funcptr p;
image_id the_id;
status_t retval;
char fullpath[PATH_MAX];
if( Py_VerboseFlag ) {
printf( "load_add_on( %s )\n", pathname );
}
/* Hmm, this old bug appears to have regenerated itself; if the
* path isn't absolute, load_add_on() will fail. Reported to Be
* April 21, 1998.
*/
if( pathname[0] != '/' ) {
(void)getcwd( fullpath, PATH_MAX );
(void)strncat( fullpath, "/", PATH_MAX );
(void)strncat( fullpath, pathname, PATH_MAX );
if( Py_VerboseFlag ) {
printf( "load_add_on( %s )\n", fullpath );
}
} else {
(void)strcpy( fullpath, pathname );
}
the_id = load_add_on( fullpath );
if( the_id < B_NO_ERROR ) {
/* It's too bad load_add_on() doesn't set errno or something...
*/
char buff[256]; /* hate hard-coded string sizes... */
if( Py_VerboseFlag ) {
printf( "load_add_on( %s ) failed", fullpath );
}
switch( the_id ) {
case B_ERROR:
sprintf( buff, "BeOS: Failed to load %.200s", fullpath );
break;
default:
sprintf( buff, "Unknown error loading %.200s", fullpath );
break;
}
PyErr_SetString( PyExc_ImportError, buff );
return NULL;
}
if( Py_VerboseFlag ) {
printf( "get_image_symbol( %s )\n", funcname );
}
retval = get_image_symbol( the_id, funcname, B_SYMBOL_TYPE_TEXT, &p );
if( retval != B_NO_ERROR || p == NULL ) {
/* That's bad, we can't find that symbol in the module...
*/
char buff[256]; /* hate hard-coded string sizes... */
if( Py_VerboseFlag ) {
printf( "get_image_symbol( %s ) failed", funcname );
}
switch( retval ) {
case B_BAD_IMAGE_ID:
sprintf( buff, "can't load init function for dynamic module: "
"Invalid image ID for %.180s", fullpath );
break;
case B_BAD_INDEX:
sprintf( buff, "can't load init function for dynamic module: "
"Bad index for %.180s", funcname );
break;
default:
sprintf( buff, "can't load init function for dynamic module: "
"Unknown error looking up %.180s", funcname );
break;
}
retval = unload_add_on( the_id );
PyErr_SetString( PyExc_ImportError, buff );
return NULL;
}
/* Save the module name and image ID for later so we can clean up
* gracefully.
*/
beos_add_dyn( name, the_id );
return p;
}

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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Support for dynamic loading of extension modules */
#include "dl.h"
#include "Python.h"
#include "importdl.h"
extern char *Py_GetProgramName();
const struct filedescr _PyImport_DynLoadFiletab[] = {
{".o", "rb", C_EXTENSION},
{"module.o", "rb", C_EXTENSION},
{0, 0}
};
dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname,
const char *pathname, FILE *fp)
{
return dl_loadmod(Py_GetProgramName(), pathname, funcname);
}

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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Support for dynamic loading of extension modules */
#include "dl.h"
#include <errno.h>
#include "Python.h"
#include "importdl.h"
const struct filedescr _PyImport_DynLoadFiletab[] = {
{".sl", "rb", C_EXTENSION},
{"module.sl", "rb", C_EXTENSION},
{0, 0}
};
dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname,
const char *pathname, FILE *fp)
{
dl_funcptr p;
shl_t lib;
int flags;
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);
sprintf(buf, "Failed to load %.200s", pathname);
PyErr_SetString(PyExc_ImportError, buf);
return NULL;
}
if (Py_VerboseFlag)
printf("shl_findsym %s\n", funcname);
shl_findsym(&lib, funcname, TYPE_UNDEFINED, (void *) &p);
if (p == NULL && Py_VerboseFlag)
perror(funcname);
return p;
}

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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Support for dynamic loading of extension modules */
#include "Python.h"
#include "importdl.h"
#include <Aliases.h>
#include <CodeFragments.h>
#ifdef SYMANTEC__CFM68K__ /* Really an older version of Universal Headers */
#define CFragConnectionID ConnectionID
#define kLoadCFrag 0x01
#endif
#ifdef USE_GUSI
#include "TFileSpec.h" /* for Path2FSSpec() */
#endif
#include <Files.h>
#include "macdefs.h"
#include "macglue.h"
const struct filedescr _PyImport_DynLoadFiletab[] = {
{".slb", "rb", C_EXTENSION},
#ifdef __CFM68K__
{".CFM68K.slb", "rb", C_EXTENSION},
#else
{".ppc.slb", "rb", C_EXTENSION},
#endif
{0, 0}
};
dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname,
const char *pathname, FILE *fp)
{
dl_funcptr p;
/*
** Dynamic loading of CFM shared libraries on the Mac. The
** code has become more convoluted than it was, because we
** want to be able to put multiple modules in a single
** file. For this reason, we have to determine the fragment
** name, and we cannot use the library entry point but we have
** to locate the correct init routine "by hand".
*/
FSSpec libspec;
CFragConnectionID connID;
Ptr mainAddr;
Str255 errMessage;
OSErr err;
#ifndef USE_GUSI
Boolean isfolder, didsomething;
#endif
char buf[512];
Str63 fragname;
Ptr symAddr;
CFragSymbolClass class;
/* First resolve any aliases to find the real file */
#ifdef USE_GUSI
err = Path2FSSpec(pathname, &libspec);
#else
(void)FSMakeFSSpec(0, 0, Pstring(pathname), &libspec);
err = ResolveAliasFile(&libspec, 1, &isfolder, &didsomething);
#endif
if ( err ) {
sprintf(buf, "%.255s: %.200s",
pathname, PyMac_StrError(err));
PyErr_SetString(PyExc_ImportError, buf);
return NULL;
}
/* Next, determine the fragment name,
by stripping '.slb' and 'module' */
memcpy(fragname+1, libspec.name+1, libspec.name[0]);
fragname[0] = libspec.name[0];
if( strncmp((char *)(fragname+1+fragname[0]-4),
".slb", 4) == 0 )
fragname[0] -= 4;
if ( strncmp((char *)(fragname+1+fragname[0]-6),
"module", 6) == 0 )
fragname[0] -= 6;
/* Load the fragment
(or return the connID if it is already loaded */
err = GetDiskFragment(&libspec, 0, 0, fragname,
kLoadCFrag, &connID, &mainAddr,
errMessage);
if ( err ) {
sprintf(buf, "%.*s: %.200s",
errMessage[0], errMessage+1,
PyMac_StrError(err));
PyErr_SetString(PyExc_ImportError, buf);
return NULL;
}
/* Locate the address of the correct init function */
err = FindSymbol(connID, Pstring(funcname), &symAddr, &class);
if ( err ) {
sprintf(buf, "%s: %.200s",
funcname, PyMac_StrError(err));
PyErr_SetString(PyExc_ImportError, buf);
return NULL;
}
p = (dl_funcptr)symAddr;
return p;
}

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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Support for dynamic loading of extension modules */
#include "Python.h"
#include "importdl.h"
#ifdef WITH_DYLD
#define USE_DYLD
#include <mach-o/dyld.h>
#else /* WITH_DYLD */
#define USE_RLD
/* Define this to 1 if you want be able to load ObjC modules as well:
it switches between two different way of loading modules on the NeXT,
one that directly interfaces with the dynamic loader (rld_load(), which
does not correctly load ObjC object files), and another that uses the
ObjC runtime (objc_loadModules()) to do the job.
You'll have to add ``-ObjC'' to the compiler flags if you set this to 1.
*/
#define HANDLE_OBJC_MODULES 1
#if HANDLE_OBJC_MODULES
#include <objc/Object.h>
#include <objc/objc-load.h>
#endif
#include <mach-o/rld.h>
#endif /* WITH_DYLD */
const struct filedescr _PyImport_DynLoadFiletab[] = {
{".so", "rb", C_EXTENSION},
{"module.so", "rb", C_EXTENSION},
{0, 0}
};
dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname,
const char *pathname, FILE *fp)
{
dl_funcptr p = NULL;
#ifdef USE_RLD
{
NXStream *errorStream;
struct mach_header *new_header;
const char *filenames[2];
long ret;
unsigned long ptr;
errorStream = NXOpenMemory(NULL, 0, NX_WRITEONLY);
filenames[0] = pathname;
filenames[1] = NULL;
#if HANDLE_OBJC_MODULES
/* The following very bogus line of code ensures that
objc_msgSend, etc are linked into the binary. Without
it, dynamic loading of a module that includes objective-c
method calls will fail with "undefined symbol _objc_msgSend()".
This remains true even in the presence of the -ObjC flag
to the compiler
*/
[Object name];
/* objc_loadModules() dynamically loads the object files
indicated by the paths in filenames. If there are any
errors generated during loading -- typically due to the
inability to find particular symbols -- an error message
will be written to errorStream.
It returns 0 if the module is successfully loaded, 1
otherwise.
*/
ret = !objc_loadModules(filenames, errorStream,
NULL, &new_header, NULL);
#else /* !HANDLE_OBJC_MODULES */
ret = rld_load(errorStream, &new_header,
filenames, NULL);
#endif /* HANDLE_OBJC_MODULES */
/* extract the error messages for the exception */
if(!ret) {
char *streamBuf;
int len, maxLen;
NXPutc(errorStream, (char)0);
NXGetMemoryBuffer(errorStream,
&streamBuf, &len, &maxLen);
PyErr_SetString(PyExc_ImportError, streamBuf);
}
if(ret && rld_lookup(errorStream, funcname, &ptr))
p = (dl_funcptr) ptr;
NXCloseMemory(errorStream, NX_FREEBUFFER);
if(!ret)
return NULL;
}
#endif /* USE_RLD */
#ifdef USE_DYLD
/* This is also NeXT-specific. However, frameworks (the new style
of shared library) and rld() can't be used in the same program;
instead, you have to use dyld, which is mostly unimplemented. */
{
NSObjectFileImageReturnCode rc;
NSObjectFileImage image;
NSModule newModule;
NSSymbol theSym;
void *symaddr;
const char *errString;
rc = NSCreateObjectFileImageFromFile(pathname, &image);
switch(rc) {
default:
case NSObjectFileImageFailure:
NSObjectFileImageFormat:
/* for these a message is printed on stderr by dyld */
errString = "Can't create object file image";
break;
case NSObjectFileImageSuccess:
errString = NULL;
break;
case NSObjectFileImageInappropriateFile:
errString = "Inappropriate file type for dynamic loading";
break;
case NSObjectFileImageArch:
errString = "Wrong CPU type in object file";
break;
NSObjectFileImageAccess:
errString = "Can't read object file (no access)";
break;
}
if (errString == NULL) {
newModule = NSLinkModule(image, pathname, TRUE);
if (!newModule)
errString = "Failure linking new module";
}
if (errString != NULL) {
PyErr_SetString(PyExc_ImportError, errString);
return NULL;
}
if (!NSIsSymbolNameDefined(funcname)) {
/* UnlinkModule() isn't implimented in current versions, but calling it does no harm */
NSUnLinkModule(newModule, FALSE);
PyErr_Format(PyExc_ImportError, "Loaded module does not contain symbol %s", funcname);
return NULL;
}
theSym = NSLookupAndBindSymbol(funcname);
p = (dl_funcptr)NSAddressOfSymbol(theSym);
}
#endif /* USE_DYLD */
return p;
}

74
Python/dynload_os2.c Normal file
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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Support for dynamic loading of extension modules */
#define INCL_DOSERRORS
#define INCL_DOSMODULEMGR
#include <os2.h>
#include "Python.h"
#include "importdl.h"
const struct filedescr _PyImport_DynLoadFiletab[] = {
{".pyd", "rb", C_EXTENSION},
{".dll", "rb", C_EXTENSION},
{0, 0}
};
dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname,
const char *pathname, FILE *fp)
{
dl_funcptr p;
APIRET rc;
HMODULE hDLL;
char failreason[256];
rc = DosLoadModule(failreason,
sizeof(failreason),
pathname,
&hDLL);
if (rc != NO_ERROR) {
char errBuf[256];
sprintf(errBuf,
"DLL load failed, rc = %d: %s",
rc, failreason);
PyErr_SetString(PyExc_ImportError, errBuf);
return NULL;
}
rc = DosQueryProcAddr(hDLL, 0L, funcname, &p);
if (rc != NO_ERROR)
p = NULL; /* Signify Failure to Acquire Entrypoint */
return p;
}

110
Python/dynload_shlib.c Normal file
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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Support for dynamic loading of extension modules */
#include "Python.h"
#include "importdl.h"
#include <sys/types.h>
#include <sys/stat.h>
#if defined(__NetBSD__) && (NetBSD < 199712)
#include <nlist.h>
#include <link.h>
#define dlerror() "error in dynamic linking"
#else
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#endif
#endif
#ifndef RTLD_LAZY
#define RTLD_LAZY 1
#endif
const struct filedescr _PyImport_DynLoadFiletab[] = {
{".so", "rb", C_EXTENSION},
{"module.so", "rb", C_EXTENSION},
{0, 0}
};
static struct {
dev_t dev;
ino_t ino;
void *handle;
} handles[128];
static int nhandles = 0;
dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname,
const char *pathname, FILE *fp)
{
dl_funcptr p;
void *handle;
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;
}
}
#ifdef RTLD_NOW
/* RTLD_NOW: resolve externals now
(i.e. core dump now if some are missing) */
handle = dlopen(pathname, RTLD_NOW);
#else
if (Py_VerboseFlag)
printf("dlopen(\"%s\", %d);\n", pathname,
RTLD_LAZY);
handle = dlopen(pathname, RTLD_LAZY);
#endif /* RTLD_NOW */
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;
}

41
Python/dynload_stub.c Normal file
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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* This module provides the necessary stubs for when dynamic loading is
not present. */
#include "Python.h"
#include "importdl.h"
const struct filedescr _PyImport_DynLoadFiletab[] = {
{0, 0}
};

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Python/dynload_win.c Normal file
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/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Support for dynamic loading of extension modules */
#include <windows.h>
#include <direct.h>
#include "Python.h"
#include "importdl.h"
const struct filedescr _PyImport_DynLoadFiletab[] = {
#ifdef _DEBUG
{"_d.pyd", "rb", C_EXTENSION},
{"_d.dll", "rb", C_EXTENSION},
#else
{".pyd", "rb", C_EXTENSION},
{".dll", "rb", C_EXTENSION},
#endif
{0, 0}
};
dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname,
const char *pathname, FILE *fp)
{
dl_funcptr p;
#ifdef MS_WIN32
{
HINSTANCE hDLL;
char pathbuf[260];
if (strchr(pathname, '\\') == NULL &&
strchr(pathname, '/') == NULL)
{
/* Prefix bare filename with ".\" */
char *p = pathbuf;
*p = '\0';
_getcwd(pathbuf, sizeof pathbuf);
if (*p != '\0' && p[1] == ':')
p += 2;
sprintf(p, ".\\%-.255s", pathname);
pathname = pathbuf;
}
/* Look for dependent DLLs in directory of pathname first */
/* XXX This call doesn't exist in Windows CE */
hDLL = LoadLibraryEx(pathname, NULL,
LOAD_WITH_ALTERED_SEARCH_PATH);
if (hDLL==NULL){
char errBuf[256];
unsigned int errorCode;
/* Get an error string from Win32 error code */
char theInfo[256]; /* Pointer to error text
from system */
int theLength; /* Length of error text */
errorCode = GetLastError();
theLength = FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM, /* flags */
NULL, /* message source */
errorCode, /* the message (error) ID */
0, /* default language environment */
(LPTSTR) theInfo, /* the buffer */
sizeof(theInfo), /* the buffer size */
NULL); /* no additional format args. */
/* Problem: could not get the error message.
This should not happen if called correctly. */
if (theLength == 0) {
sprintf(errBuf,
"DLL load failed with error code %d",
errorCode);
} else {
int len;
/* For some reason a \r\n
is appended to the text */
if (theLength >= 2 &&
theInfo[theLength-2] == '\r' &&
theInfo[theLength-1] == '\n') {
theLength -= 2;
theInfo[theLength] = '\0';
}
strcpy(errBuf, "DLL load failed: ");
len = strlen(errBuf);
strncpy(errBuf+len, theInfo,
sizeof(errBuf)-len);
errBuf[sizeof(errBuf)-1] = '\0';
}
PyErr_SetString(PyExc_ImportError, errBuf);
return NULL;
}
p = GetProcAddress(hDLL, funcname);
}
#endif /* MS_WIN32 */
#ifdef MS_WIN16
{
HINSTANCE hDLL;
char pathbuf[16];
if (strchr(pathname, '\\') == NULL &&
strchr(pathname, '/') == NULL)
{
/* Prefix bare filename with ".\" */
sprintf(pathbuf, ".\\%-.13s", pathname);
pathname = pathbuf;
}
hDLL = LoadLibrary(pathname);
if (hDLL < HINSTANCE_ERROR){
char errBuf[256];
sprintf(errBuf,
"DLL load failed with error code %d", hDLL);
PyErr_SetString(PyExc_ImportError, errBuf);
return NULL;
}
p = GetProcAddress(hDLL, funcname);
}
#endif /* MS_WIN16 */
return p;
}