+++ /dev/null
-
-/* Support for dynamic loading of extension modules */
-
-#include "Python.h"
-#include "importdl.h"
-
-#include <errno.h> /* for global errno */
-#include <string.h> /* for strerror() */
-#include <stdlib.h> /* for malloc(), free() */
-#include <sys/ldr.h>
-
-
-#ifdef AIX_GENUINE_CPLUSPLUS
-#include <load.h>
-#define aix_load loadAndInit
-#else
-#define aix_load load
-#endif
-
-
-extern char *Py_GetProgramName(void);
-
-typedef struct Module {
- struct Module *next;
- void *entry;
-} Module, *ModulePtr;
-
-const char *_PyImport_DynLoadFiletab[] = {".so", NULL};
-
-static int
-aix_getoldmodules(void **modlistptr)
-{
- ModulePtr modptr, prevmodptr;
- struct ld_info *ldiptr;
- char *ldibuf;
- int errflag, bufsize = 1024;
- 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 *)((char*)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 *)((char*)ldiptr + offset);
- } while (offset);
- free(ldibuf);
- return 0;
-}
-
-
-static void
-aix_loaderror(const char *pathname)
-{
-
- char *message[1024], errbuf[1024];
- PyObject *pathname_ob = NULL;
- PyObject *errbuf_ob = NULL;
- 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 ERRBUF_APPEND(s) strncat(errbuf, s, sizeof(errbuf)-strlen(errbuf)-1)
-
- PyOS_snprintf(errbuf, sizeof(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 < Py_ARRAY_LENGTH(load_errtab); j++) {
- if (nerr == load_errtab[j].errNo && load_errtab[j].errstr)
- ERRBUF_APPEND(load_errtab[j].errstr);
- }
- while (Py_ISDIGIT(*message[i])) message[i]++ ;
- ERRBUF_APPEND(message[i]);
- ERRBUF_APPEND("\n");
- }
- /* Subtract 1 from the length to trim off trailing newline */
- errbuf_ob = PyUnicode_DecodeLocaleAndSize(errbuf, strlen(errbuf)-1, "surrogateescape");
- if (errbuf_ob == NULL)
- return;
- pathname_ob = PyUnicode_DecodeFSDefault(pathname);
- if (pathname_ob == NULL) {
- Py_DECREF(errbuf_ob);
- return;
- }
- PyErr_SetImportError(errbuf_ob, NULL, pathname_ob);
- Py_DECREF(pathname_ob);
- Py_DECREF(errbuf_ob);
- return;
-}
-
-
-dl_funcptr _PyImport_FindSharedFuncptr(const char *prefix,
- const char *shortname,
- 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
- -- explicitly 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((char *)pathname, L_NOAUTODEFER, 0);
- if (p == NULL) {
- aix_loaderror(pathname);
- return NULL;
- }
-
- return p;
-}
projects / thirdparty / Python / cpython.git / commitdiff
