3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 * 2000, 2001, 2002, 2003, by Larry Wall and others
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
12 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
16 #define PERL_IN_PERL_C
18 #include "patchlevel.h" /* for local_patches */
22 char *nw_get_sitelib(const char *pl);
25 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
42 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
43 char *getenv (char *); /* Usually in <stdlib.h> */
46 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
54 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
60 #if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
69 MUTEX_INIT(&PL_dollarzero_mutex); \
72 PERL_SET_THX(my_perl); \
76 # define INIT_TLS_AND_INTERP \
78 if (!PL_curinterp) { \
79 PERL_SET_INTERP(my_perl); \
81 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
94 /* New() needs interpreter, so call malloc() instead */
95 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
97 Zero(my_perl, 1, PerlInterpreter);
113 =head1 Embedding Functions
115 =for apidoc perl_alloc
117 Allocates a new Perl interpreter. See L<perlembed>.
125 PerlInterpreter *my_perl;
126 #ifdef USE_5005THREADS
130 /* New() needs interpreter, so call malloc() instead */
131 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
134 Zero(my_perl, 1, PerlInterpreter);
137 #endif /* PERL_IMPLICIT_SYS */
140 =for apidoc perl_construct
142 Initializes a new Perl interpreter. See L<perlembed>.
148 perl_construct(pTHXx)
152 PL_perl_destruct_level = 1;
154 if (PL_perl_destruct_level > 0)
157 /* Init the real globals (and main thread)? */
159 #ifdef PERL_FLEXIBLE_EXCEPTIONS
160 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
163 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
165 PL_linestr = NEWSV(65,79);
166 sv_upgrade(PL_linestr,SVt_PVIV);
168 if (!SvREADONLY(&PL_sv_undef)) {
169 /* set read-only and try to insure than we wont see REFCNT==0
172 SvREADONLY_on(&PL_sv_undef);
173 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
175 sv_setpv(&PL_sv_no,PL_No);
177 SvREADONLY_on(&PL_sv_no);
178 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
180 sv_setpv(&PL_sv_yes,PL_Yes);
182 SvREADONLY_on(&PL_sv_yes);
183 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
185 SvREADONLY_on(&PL_sv_placeholder);
186 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
189 PL_sighandlerp = Perl_sighandler;
190 PL_pidstatus = newHV();
193 PL_rs = newSVpvn("\n", 1);
198 PL_lex_state = LEX_NOTPARSING;
204 SET_NUMERIC_STANDARD();
208 PL_patchlevel = NEWSV(0,4);
209 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
210 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
211 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
212 s = (U8*)SvPVX(PL_patchlevel);
213 /* Build version strings using "native" characters */
214 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
215 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
216 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
218 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
219 SvPOK_on(PL_patchlevel);
220 SvNVX(PL_patchlevel) = (NV)PERL_REVISION +
221 ((NV)PERL_VERSION / (NV)1000) +
222 ((NV)PERL_SUBVERSION / (NV)1000000);
223 SvNOK_on(PL_patchlevel); /* dual valued */
224 SvUTF8_on(PL_patchlevel);
225 SvREADONLY_on(PL_patchlevel);
228 #if defined(LOCAL_PATCH_COUNT)
229 PL_localpatches = local_patches; /* For possible -v */
232 #ifdef HAVE_INTERP_INTERN
236 PerlIO_init(aTHX); /* Hook to IO system */
238 PL_fdpid = newAV(); /* for remembering popen pids by fd */
239 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
240 PL_errors = newSVpvn("",0);
241 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
242 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
243 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
245 PL_regex_padav = newAV();
246 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
247 PL_regex_pad = AvARRAY(PL_regex_padav);
249 #ifdef USE_REENTRANT_API
250 Perl_reentrant_init(aTHX);
253 /* Note that strtab is a rather special HV. Assumptions are made
254 about not iterating on it, and not adding tie magic to it.
255 It is properly deallocated in perl_destruct() */
258 HvSHAREKEYS_off(PL_strtab); /* mandatory */
259 hv_ksplit(PL_strtab, 512);
261 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
262 _dyld_lookup_and_bind
263 ("__environ", (unsigned long *) &environ_pointer, NULL);
267 # ifdef USE_ENVIRON_ARRAY
268 PL_origenviron = environ;
272 /* Use sysconf(_SC_CLK_TCK) if available, if not
273 * available or if the sysconf() fails, use the HZ. */
274 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
275 PL_clocktick = sysconf(_SC_CLK_TCK);
276 if (PL_clocktick <= 0)
280 PL_stashcache = newHV();
286 =for apidoc nothreadhook
288 Stub that provides thread hook for perl_destruct when there are
295 Perl_nothreadhook(pTHX)
301 =for apidoc perl_destruct
303 Shuts down a Perl interpreter. See L<perlembed>.
311 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
313 #ifdef USE_5005THREADS
315 #endif /* USE_5005THREADS */
317 /* wait for all pseudo-forked children to finish */
318 PERL_WAIT_FOR_CHILDREN;
320 destruct_level = PL_perl_destruct_level;
324 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
326 if (destruct_level < i)
333 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
338 if (PL_endav && !PL_minus_c)
339 call_list(PL_scopestack_ix, PL_endav);
345 /* Need to flush since END blocks can produce output */
348 if (CALL_FPTR(PL_threadhook)(aTHX)) {
349 /* Threads hook has vetoed further cleanup */
350 return STATUS_NATIVE_EXPORT;
353 /* We must account for everything. */
355 /* Destroy the main CV and syntax tree */
357 /* ensure comppad/curpad to refer to main's pad */
358 if (CvPADLIST(PL_main_cv)) {
359 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
361 op_free(PL_main_root);
362 PL_main_root = Nullop;
364 PL_curcop = &PL_compiling;
365 PL_main_start = Nullop;
366 SvREFCNT_dec(PL_main_cv);
370 /* Tell PerlIO we are about to tear things apart in case
371 we have layers which are using resources that should
375 PerlIO_destruct(aTHX);
377 if (PL_sv_objcount) {
379 * Try to destruct global references. We do this first so that the
380 * destructors and destructees still exist. Some sv's might remain.
381 * Non-referenced objects are on their own.
387 /* unhook hooks which will soon be, or use, destroyed data */
388 SvREFCNT_dec(PL_warnhook);
389 PL_warnhook = Nullsv;
390 SvREFCNT_dec(PL_diehook);
393 /* call exit list functions */
394 while (PL_exitlistlen-- > 0)
395 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
397 Safefree(PL_exitlist);
402 if (destruct_level == 0){
404 DEBUG_P(debprofdump());
406 #if defined(PERLIO_LAYERS)
407 /* No more IO - including error messages ! */
408 PerlIO_cleanup(aTHX);
411 /* The exit() function will do everything that needs doing. */
412 return STATUS_NATIVE_EXPORT;
415 /* jettison our possibly duplicated environment */
416 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
417 * so we certainly shouldn't free it here
420 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
421 if (environ != PL_origenviron
423 /* only main thread can free environ[0] contents */
424 && PL_curinterp == aTHX
430 for (i = 0; environ[i]; i++)
431 safesysfree(environ[i]);
433 /* Must use safesysfree() when working with environ. */
434 safesysfree(environ);
436 environ = PL_origenviron;
439 #endif /* !PERL_MICRO */
442 /* the syntax tree is shared between clones
443 * so op_free(PL_main_root) only ReREFCNT_dec's
444 * REGEXPs in the parent interpreter
445 * we need to manually ReREFCNT_dec for the clones
448 I32 i = AvFILLp(PL_regex_padav) + 1;
449 SV **ary = AvARRAY(PL_regex_padav);
453 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
455 if (SvFLAGS(resv) & SVf_BREAK) {
456 /* this is PL_reg_curpm, already freed
457 * flag is set in regexec.c:S_regtry
459 SvFLAGS(resv) &= ~SVf_BREAK;
461 else if(SvREPADTMP(resv)) {
462 SvREPADTMP_off(resv);
469 SvREFCNT_dec(PL_regex_padav);
470 PL_regex_padav = Nullav;
474 SvREFCNT_dec((SV*) PL_stashcache);
475 PL_stashcache = NULL;
477 /* loosen bonds of global variables */
480 (void)PerlIO_close(PL_rsfp);
484 /* Filters for program text */
485 SvREFCNT_dec(PL_rsfp_filters);
486 PL_rsfp_filters = Nullav;
489 PL_preprocess = FALSE;
495 PL_doswitches = FALSE;
496 PL_dowarn = G_WARN_OFF;
497 PL_doextract = FALSE;
498 PL_sawampersand = FALSE; /* must save all match strings */
501 Safefree(PL_inplace);
503 SvREFCNT_dec(PL_patchlevel);
506 SvREFCNT_dec(PL_e_script);
507 PL_e_script = Nullsv;
512 /* magical thingies */
514 SvREFCNT_dec(PL_ofs_sv); /* $, */
517 SvREFCNT_dec(PL_ors_sv); /* $\ */
520 SvREFCNT_dec(PL_rs); /* $/ */
523 PL_multiline = 0; /* $* */
524 Safefree(PL_osname); /* $^O */
527 SvREFCNT_dec(PL_statname);
528 PL_statname = Nullsv;
531 /* defgv, aka *_ should be taken care of elsewhere */
533 /* clean up after study() */
534 SvREFCNT_dec(PL_lastscream);
535 PL_lastscream = Nullsv;
536 Safefree(PL_screamfirst);
538 Safefree(PL_screamnext);
542 Safefree(PL_efloatbuf);
543 PL_efloatbuf = Nullch;
546 /* startup and shutdown function lists */
547 SvREFCNT_dec(PL_beginav);
548 SvREFCNT_dec(PL_beginav_save);
549 SvREFCNT_dec(PL_endav);
550 SvREFCNT_dec(PL_checkav);
551 SvREFCNT_dec(PL_checkav_save);
552 SvREFCNT_dec(PL_initav);
554 PL_beginav_save = Nullav;
557 PL_checkav_save = Nullav;
560 /* shortcuts just get cleared */
566 PL_argvoutgv = Nullgv;
568 PL_stderrgv = Nullgv;
569 PL_last_in_gv = Nullgv;
574 PL_DBsingle = Nullsv;
576 PL_DBsignal = Nullsv;
577 PL_DBassertion = Nullsv;
580 PL_debstash = Nullhv;
582 /* reset so print() ends up where we expect */
585 SvREFCNT_dec(PL_argvout_stack);
586 PL_argvout_stack = Nullav;
588 SvREFCNT_dec(PL_modglobal);
589 PL_modglobal = Nullhv;
590 SvREFCNT_dec(PL_preambleav);
591 PL_preambleav = Nullav;
592 SvREFCNT_dec(PL_subname);
594 SvREFCNT_dec(PL_linestr);
596 SvREFCNT_dec(PL_pidstatus);
597 PL_pidstatus = Nullhv;
598 SvREFCNT_dec(PL_toptarget);
599 PL_toptarget = Nullsv;
600 SvREFCNT_dec(PL_bodytarget);
601 PL_bodytarget = Nullsv;
602 PL_formtarget = Nullsv;
604 /* free locale stuff */
605 #ifdef USE_LOCALE_COLLATE
606 Safefree(PL_collation_name);
607 PL_collation_name = Nullch;
610 #ifdef USE_LOCALE_NUMERIC
611 Safefree(PL_numeric_name);
612 PL_numeric_name = Nullch;
613 SvREFCNT_dec(PL_numeric_radix_sv);
614 PL_numeric_radix_sv = Nullsv;
617 /* clear utf8 character classes */
618 SvREFCNT_dec(PL_utf8_alnum);
619 SvREFCNT_dec(PL_utf8_alnumc);
620 SvREFCNT_dec(PL_utf8_ascii);
621 SvREFCNT_dec(PL_utf8_alpha);
622 SvREFCNT_dec(PL_utf8_space);
623 SvREFCNT_dec(PL_utf8_cntrl);
624 SvREFCNT_dec(PL_utf8_graph);
625 SvREFCNT_dec(PL_utf8_digit);
626 SvREFCNT_dec(PL_utf8_upper);
627 SvREFCNT_dec(PL_utf8_lower);
628 SvREFCNT_dec(PL_utf8_print);
629 SvREFCNT_dec(PL_utf8_punct);
630 SvREFCNT_dec(PL_utf8_xdigit);
631 SvREFCNT_dec(PL_utf8_mark);
632 SvREFCNT_dec(PL_utf8_toupper);
633 SvREFCNT_dec(PL_utf8_totitle);
634 SvREFCNT_dec(PL_utf8_tolower);
635 SvREFCNT_dec(PL_utf8_tofold);
636 SvREFCNT_dec(PL_utf8_idstart);
637 SvREFCNT_dec(PL_utf8_idcont);
638 PL_utf8_alnum = Nullsv;
639 PL_utf8_alnumc = Nullsv;
640 PL_utf8_ascii = Nullsv;
641 PL_utf8_alpha = Nullsv;
642 PL_utf8_space = Nullsv;
643 PL_utf8_cntrl = Nullsv;
644 PL_utf8_graph = Nullsv;
645 PL_utf8_digit = Nullsv;
646 PL_utf8_upper = Nullsv;
647 PL_utf8_lower = Nullsv;
648 PL_utf8_print = Nullsv;
649 PL_utf8_punct = Nullsv;
650 PL_utf8_xdigit = Nullsv;
651 PL_utf8_mark = Nullsv;
652 PL_utf8_toupper = Nullsv;
653 PL_utf8_totitle = Nullsv;
654 PL_utf8_tolower = Nullsv;
655 PL_utf8_tofold = Nullsv;
656 PL_utf8_idstart = Nullsv;
657 PL_utf8_idcont = Nullsv;
659 if (!specialWARN(PL_compiling.cop_warnings))
660 SvREFCNT_dec(PL_compiling.cop_warnings);
661 PL_compiling.cop_warnings = Nullsv;
662 if (!specialCopIO(PL_compiling.cop_io))
663 SvREFCNT_dec(PL_compiling.cop_io);
664 PL_compiling.cop_io = Nullsv;
665 CopFILE_free(&PL_compiling);
666 CopSTASH_free(&PL_compiling);
668 /* Prepare to destruct main symbol table. */
673 SvREFCNT_dec(PL_curstname);
674 PL_curstname = Nullsv;
676 /* clear queued errors */
677 SvREFCNT_dec(PL_errors);
681 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
682 if (PL_scopestack_ix != 0)
683 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
684 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
685 (long)PL_scopestack_ix);
686 if (PL_savestack_ix != 0)
687 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
688 "Unbalanced saves: %ld more saves than restores\n",
689 (long)PL_savestack_ix);
690 if (PL_tmps_floor != -1)
691 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
692 (long)PL_tmps_floor + 1);
693 if (cxstack_ix != -1)
694 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
695 (long)cxstack_ix + 1);
698 /* Now absolutely destruct everything, somehow or other, loops or no. */
699 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
700 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
702 /* the 2 is for PL_fdpid and PL_strtab */
703 while (PL_sv_count > 2 && sv_clean_all())
706 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
707 SvFLAGS(PL_fdpid) |= SVt_PVAV;
708 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
709 SvFLAGS(PL_strtab) |= SVt_PVHV;
711 AvREAL_off(PL_fdpid); /* no surviving entries */
712 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
715 #ifdef HAVE_INTERP_INTERN
719 /* Destruct the global string table. */
721 /* Yell and reset the HeVAL() slots that are still holding refcounts,
722 * so that sv_free() won't fail on them.
730 max = HvMAX(PL_strtab);
731 array = HvARRAY(PL_strtab);
734 if (hent && ckWARN_d(WARN_INTERNAL)) {
735 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
736 "Unbalanced string table refcount: (%d) for \"%s\"",
737 HeVAL(hent) - Nullsv, HeKEY(hent));
738 HeVAL(hent) = Nullsv;
748 SvREFCNT_dec(PL_strtab);
751 /* free the pointer table used for cloning */
752 ptr_table_free(PL_ptr_table);
753 PL_ptr_table = (PTR_TBL_t*)NULL;
756 /* free special SVs */
758 SvREFCNT(&PL_sv_yes) = 0;
759 sv_clear(&PL_sv_yes);
760 SvANY(&PL_sv_yes) = NULL;
761 SvFLAGS(&PL_sv_yes) = 0;
763 SvREFCNT(&PL_sv_no) = 0;
765 SvANY(&PL_sv_no) = NULL;
766 SvFLAGS(&PL_sv_no) = 0;
770 for (i=0; i<=2; i++) {
771 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
772 sv_clear(PERL_DEBUG_PAD(i));
773 SvANY(PERL_DEBUG_PAD(i)) = NULL;
774 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
778 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
779 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
781 #ifdef DEBUG_LEAKING_SCALARS
782 if (PL_sv_count != 0) {
787 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
788 svend = &sva[SvREFCNT(sva)];
789 for (sv = sva + 1; sv < svend; ++sv) {
790 if (SvTYPE(sv) != SVTYPEMASK) {
791 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv);
800 #if defined(PERLIO_LAYERS)
801 /* No more IO - including error messages ! */
802 PerlIO_cleanup(aTHX);
805 /* sv_undef needs to stay immortal until after PerlIO_cleanup
806 as currently layers use it rather than Nullsv as a marker
807 for no arg - and will try and SvREFCNT_dec it.
809 SvREFCNT(&PL_sv_undef) = 0;
810 SvREADONLY_off(&PL_sv_undef);
812 Safefree(PL_origfilename);
813 PL_origfilename = Nullch;
814 Safefree(PL_reg_start_tmp);
815 PL_reg_start_tmp = (char**)NULL;
816 PL_reg_start_tmpl = 0;
818 Safefree(PL_reg_curpm);
819 Safefree(PL_reg_poscache);
821 Safefree(PL_op_mask);
822 Safefree(PL_psig_ptr);
823 PL_psig_ptr = (SV**)NULL;
824 Safefree(PL_psig_name);
825 PL_psig_name = (SV**)NULL;
826 Safefree(PL_bitcount);
827 PL_bitcount = Nullch;
828 Safefree(PL_psig_pend);
829 PL_psig_pend = (int*)NULL;
830 PL_formfeed = Nullsv;
835 PL_taint_warn = FALSE;
836 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
839 DEBUG_P(debprofdump());
841 #ifdef USE_REENTRANT_API
842 Perl_reentrant_free(aTHX);
847 /* As the absolutely last thing, free the non-arena SV for mess() */
850 /* it could have accumulated taint magic */
851 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
854 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
855 moremagic = mg->mg_moremagic;
856 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
858 Safefree(mg->mg_ptr);
862 /* we know that type >= SVt_PV */
863 (void)SvOOK_off(PL_mess_sv);
864 Safefree(SvPVX(PL_mess_sv));
865 Safefree(SvANY(PL_mess_sv));
866 Safefree(PL_mess_sv);
869 return STATUS_NATIVE_EXPORT;
873 =for apidoc perl_free
875 Releases a Perl interpreter. See L<perlembed>.
883 #if defined(WIN32) || defined(NETWARE)
884 # if defined(PERL_IMPLICIT_SYS)
886 void *host = nw_internal_host;
888 void *host = w32_internal_host;
892 nw_delete_internal_host(host);
894 win32_delete_internal_host(host);
905 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
907 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
908 PL_exitlist[PL_exitlistlen].fn = fn;
909 PL_exitlist[PL_exitlistlen].ptr = ptr;
914 =for apidoc perl_parse
916 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
922 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
927 #ifdef USE_5005THREADS
931 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
934 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
935 setuid perl scripts securely.\n");
939 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
940 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
941 * This MUST be done before any hash stores or fetches take place.
942 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
943 * yourself, it is your responsibility to provide a good random seed!
944 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
945 if (!PL_rehash_seed_set)
946 PL_rehash_seed = get_hash_seed();
948 char *s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
954 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n",
958 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
964 /* Set PL_origalen be the sum of the contiguous argv[]
965 * elements plus the size of the env in case that it is
966 * contiguous with the argv[]. This is used in mg.c:mg_set()
967 * as the maximum modifiable length of $0. In the worst case
968 * the area we are able to modify is limited to the size of
969 * the original argv[0]. (See below for 'contiguous', though.)
974 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
975 /* Do the mask check only if the args seem like aligned. */
977 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
979 /* See if all the arguments are contiguous in memory. Note
980 * that 'contiguous' is a loose term because some platforms
981 * align the argv[] and the envp[]. If the arguments look
982 * like non-aligned, assume that they are 'strictly' or
983 * 'traditionally' contiguous. If the arguments look like
984 * aligned, we just check that they are within aligned
985 * PTRSIZE bytes. As long as no system has something bizarre
986 * like the argv[] interleaved with some other data, we are
987 * fine. (Did I just evoke Murphy's Law?) --jhi */
988 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
990 for (i = 1; i < PL_origargc; i++) {
991 if ((PL_origargv[i] == s + 1
993 || PL_origargv[i] == s + 2
998 (PL_origargv[i] > s &&
1000 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1010 /* Can we grab env area too to be used as the area for $0? */
1011 if (PL_origenviron) {
1012 if ((PL_origenviron[0] == s + 1
1014 || (PL_origenviron[0] == s + 9 && (s += 8))
1019 (PL_origenviron[0] > s &&
1020 PL_origenviron[0] <=
1021 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1025 s = PL_origenviron[0];
1028 my_setenv("NoNe SuCh", Nullch);
1029 /* Force copy of environment. */
1030 for (i = 1; PL_origenviron[i]; i++) {
1031 if (PL_origenviron[i] == s + 1
1034 (PL_origenviron[i] > s &&
1035 PL_origenviron[i] <=
1036 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1039 s = PL_origenviron[i];
1047 PL_origalen = s - PL_origargv[0] + 1;
1052 /* Come here if running an undumped a.out. */
1054 PL_origfilename = savepv(argv[0]);
1055 PL_do_undump = FALSE;
1056 cxstack_ix = -1; /* start label stack again */
1058 init_postdump_symbols(argc,argv,env);
1063 op_free(PL_main_root);
1064 PL_main_root = Nullop;
1066 PL_main_start = Nullop;
1067 SvREFCNT_dec(PL_main_cv);
1068 PL_main_cv = Nullcv;
1071 oldscope = PL_scopestack_ix;
1072 PL_dowarn = G_WARN_OFF;
1074 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1075 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1081 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1082 parse_body(env,xsinit);
1085 call_list(oldscope, PL_checkav);
1092 /* my_exit() was called */
1093 while (PL_scopestack_ix > oldscope)
1096 PL_curstash = PL_defstash;
1098 call_list(oldscope, PL_checkav);
1099 ret = STATUS_NATIVE_EXPORT;
1102 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1110 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1112 S_vparse_body(pTHX_ va_list args)
1114 char **env = va_arg(args, char**);
1115 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1117 return parse_body(env, xsinit);
1122 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1124 int argc = PL_origargc;
1125 char **argv = PL_origargv;
1126 char *scriptname = NULL;
1128 VOL bool dosearch = FALSE;
1129 char *validarg = "";
1132 char *cddir = Nullch;
1134 sv_setpvn(PL_linestr,"",0);
1135 sv = newSVpvn("",0); /* first used for -I flags */
1139 for (argc--,argv++; argc > 0; argc--,argv++) {
1140 if (argv[0][0] != '-' || !argv[0][1])
1144 validarg = " PHOOEY ";
1152 #ifndef PERL_STRICT_CR
1177 if ((s = moreswitches(s)))
1182 CHECK_MALLOC_TOO_LATE_FOR('t');
1183 if( !PL_tainting ) {
1184 PL_taint_warn = TRUE;
1190 CHECK_MALLOC_TOO_LATE_FOR('T');
1192 PL_taint_warn = FALSE;
1197 #ifdef MACOS_TRADITIONAL
1198 /* ignore -e for Dev:Pseudo argument */
1199 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1202 if (PL_euid != PL_uid || PL_egid != PL_gid)
1203 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1205 PL_e_script = newSVpvn("",0);
1206 filter_add(read_e_script, NULL);
1209 sv_catpv(PL_e_script, s);
1211 sv_catpv(PL_e_script, argv[1]);
1215 Perl_croak(aTHX_ "No code specified for -e");
1216 sv_catpv(PL_e_script, "\n");
1219 case 'I': /* -I handled both here and in moreswitches() */
1221 if (!*++s && (s=argv[1]) != Nullch) {
1226 STRLEN len = strlen(s);
1227 p = savepvn(s, len);
1228 incpush(p, TRUE, TRUE, FALSE);
1229 sv_catpvn(sv, "-I", 2);
1230 sv_catpvn(sv, p, len);
1231 sv_catpvn(sv, " ", 1);
1235 Perl_croak(aTHX_ "No directory specified for -I");
1239 PL_preprocess = TRUE;
1249 PL_preambleav = newAV();
1250 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1252 PL_Sv = newSVpv("print myconfig();",0);
1254 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1256 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1258 sv_catpv(PL_Sv,"\" Compile-time options:");
1260 sv_catpv(PL_Sv," DEBUGGING");
1262 # ifdef MULTIPLICITY
1263 sv_catpv(PL_Sv," MULTIPLICITY");
1265 # ifdef USE_5005THREADS
1266 sv_catpv(PL_Sv," USE_5005THREADS");
1268 # ifdef USE_ITHREADS
1269 sv_catpv(PL_Sv," USE_ITHREADS");
1271 # ifdef USE_64_BIT_INT
1272 sv_catpv(PL_Sv," USE_64_BIT_INT");
1274 # ifdef USE_64_BIT_ALL
1275 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1277 # ifdef USE_LONG_DOUBLE
1278 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1280 # ifdef USE_LARGE_FILES
1281 sv_catpv(PL_Sv," USE_LARGE_FILES");
1284 sv_catpv(PL_Sv," USE_SOCKS");
1286 # ifdef PERL_IMPLICIT_CONTEXT
1287 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1289 # ifdef PERL_IMPLICIT_SYS
1290 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1292 sv_catpv(PL_Sv,"\\n\",");
1294 #if defined(LOCAL_PATCH_COUNT)
1295 if (LOCAL_PATCH_COUNT > 0) {
1297 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1298 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1299 if (PL_localpatches[i])
1300 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1304 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1307 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1309 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1312 sv_catpv(PL_Sv, "; \
1314 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1317 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1320 print \" \\%ENV:\\n @env\\n\" if @env; \
1321 print \" \\@INC:\\n @INC\\n\";");
1324 PL_Sv = newSVpv("config_vars(qw(",0);
1325 sv_catpv(PL_Sv, ++s);
1326 sv_catpv(PL_Sv, "))");
1329 av_push(PL_preambleav, PL_Sv);
1330 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1333 PL_doextract = TRUE;
1341 if (!*++s || isSPACE(*s)) {
1345 /* catch use of gnu style long options */
1346 if (strEQ(s, "version")) {
1350 if (strEQ(s, "help")) {
1357 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1363 #ifndef SECURE_INTERNAL_GETENV
1366 (s = PerlEnv_getenv("PERL5OPT")))
1371 if (*s == '-' && *(s+1) == 'T') {
1372 CHECK_MALLOC_TOO_LATE_FOR('T');
1374 PL_taint_warn = FALSE;
1377 char *popt_copy = Nullch;
1390 if (!strchr("DIMUdmtwA", *s))
1391 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1395 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1396 s = popt_copy + (s - popt);
1397 d = popt_copy + (d - popt);
1404 if( !PL_tainting ) {
1405 PL_taint_warn = TRUE;
1415 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1416 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1420 scriptname = argv[0];
1423 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1425 else if (scriptname == Nullch) {
1427 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1435 open_script(scriptname,dosearch,sv,&fdscript);
1437 validate_suid(validarg, scriptname,fdscript);
1440 #if defined(SIGCHLD) || defined(SIGCLD)
1443 # define SIGCHLD SIGCLD
1445 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1446 if (sigstate == SIG_IGN) {
1447 if (ckWARN(WARN_SIGNAL))
1448 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1449 "Can't ignore signal CHLD, forcing to default");
1450 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1456 #ifdef MACOS_TRADITIONAL
1457 if (PL_doextract || gMacPerl_AlwaysExtract) {
1462 if (cddir && PerlDir_chdir(cddir) < 0)
1463 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1467 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1468 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1469 CvUNIQUE_on(PL_compcv);
1471 CvPADLIST(PL_compcv) = pad_new(0);
1472 #ifdef USE_5005THREADS
1473 CvOWNER(PL_compcv) = 0;
1474 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1475 MUTEX_INIT(CvMUTEXP(PL_compcv));
1476 #endif /* USE_5005THREADS */
1479 boot_core_UNIVERSAL();
1480 boot_core_xsutils();
1483 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1485 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1491 # ifdef HAS_SOCKS5_INIT
1492 socks5_init(argv[0]);
1498 init_predump_symbols();
1499 /* init_postdump_symbols not currently designed to be called */
1500 /* more than once (ENV isn't cleared first, for example) */
1501 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1503 init_postdump_symbols(argc,argv,env);
1505 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1506 * PL_utf8locale is conditionally turned on by
1507 * locale.c:Perl_init_i18nl10n() if the environment
1508 * look like the user wants to use UTF-8. */
1510 /* Requires init_predump_symbols(). */
1511 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
1516 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1517 * and the default open disciplines. */
1518 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1519 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1521 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1522 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1523 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1525 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1526 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1527 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1529 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1530 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1531 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1532 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1533 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1536 sv_setpvn(sv, ":utf8\0:utf8", 11);
1538 sv_setpvn(sv, ":utf8\0", 6);
1541 sv_setpvn(sv, "\0:utf8", 6);
1547 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1548 if (strEQ(s, "unsafe"))
1549 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1550 else if (strEQ(s, "safe"))
1551 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1553 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1558 /* now parse the script */
1560 SETERRNO(0,SS_NORMAL);
1562 #ifdef MACOS_TRADITIONAL
1563 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1565 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1567 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1568 MacPerl_MPWFileName(PL_origfilename));
1572 if (yyparse() || PL_error_count) {
1574 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1576 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1581 CopLINE_set(PL_curcop, 0);
1582 PL_curstash = PL_defstash;
1583 PL_preprocess = FALSE;
1585 SvREFCNT_dec(PL_e_script);
1586 PL_e_script = Nullsv;
1593 SAVECOPFILE(PL_curcop);
1594 SAVECOPLINE(PL_curcop);
1595 gv_check(PL_defstash);
1602 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1603 dump_mstats("after compilation:");
1612 =for apidoc perl_run
1614 Tells a Perl interpreter to run. See L<perlembed>.
1625 #ifdef USE_5005THREADS
1629 oldscope = PL_scopestack_ix;
1634 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1636 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1642 cxstack_ix = -1; /* start context stack again */
1644 case 0: /* normal completion */
1645 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1650 case 2: /* my_exit() */
1651 while (PL_scopestack_ix > oldscope)
1654 PL_curstash = PL_defstash;
1655 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1656 PL_endav && !PL_minus_c)
1657 call_list(oldscope, PL_endav);
1659 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1660 dump_mstats("after execution: ");
1662 ret = STATUS_NATIVE_EXPORT;
1666 POPSTACK_TO(PL_mainstack);
1669 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1679 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1681 S_vrun_body(pTHX_ va_list args)
1683 I32 oldscope = va_arg(args, I32);
1685 return run_body(oldscope);
1691 S_run_body(pTHX_ I32 oldscope)
1693 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1694 PL_sawampersand ? "Enabling" : "Omitting"));
1696 if (!PL_restartop) {
1697 DEBUG_x(dump_all());
1699 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1700 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1704 #ifdef MACOS_TRADITIONAL
1705 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1706 (gMacPerl_ErrorFormat ? "# " : ""),
1707 MacPerl_MPWFileName(PL_origfilename));
1709 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1713 if (PERLDB_SINGLE && PL_DBsingle)
1714 sv_setiv(PL_DBsingle, 1);
1716 call_list(oldscope, PL_initav);
1722 PL_op = PL_restartop;
1726 else if (PL_main_start) {
1727 CvDEPTH(PL_main_cv) = 1;
1728 PL_op = PL_main_start;
1738 =head1 SV Manipulation Functions
1740 =for apidoc p||get_sv
1742 Returns the SV of the specified Perl scalar. If C<create> is set and the
1743 Perl variable does not exist then it will be created. If C<create> is not
1744 set and the variable does not exist then NULL is returned.
1750 Perl_get_sv(pTHX_ const char *name, I32 create)
1753 #ifdef USE_5005THREADS
1754 if (name[1] == '\0' && !isALPHA(name[0])) {
1755 PADOFFSET tmp = find_threadsv(name);
1756 if (tmp != NOT_IN_PAD)
1757 return THREADSV(tmp);
1759 #endif /* USE_5005THREADS */
1760 gv = gv_fetchpv(name, create, SVt_PV);
1767 =head1 Array Manipulation Functions
1769 =for apidoc p||get_av
1771 Returns the AV of the specified Perl array. If C<create> is set and the
1772 Perl variable does not exist then it will be created. If C<create> is not
1773 set and the variable does not exist then NULL is returned.
1779 Perl_get_av(pTHX_ const char *name, I32 create)
1781 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1790 =head1 Hash Manipulation Functions
1792 =for apidoc p||get_hv
1794 Returns the HV of the specified Perl hash. If C<create> is set and the
1795 Perl variable does not exist then it will be created. If C<create> is not
1796 set and the variable does not exist then NULL is returned.
1802 Perl_get_hv(pTHX_ const char *name, I32 create)
1804 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1813 =head1 CV Manipulation Functions
1815 =for apidoc p||get_cv
1817 Returns the CV of the specified Perl subroutine. If C<create> is set and
1818 the Perl subroutine does not exist then it will be declared (which has the
1819 same effect as saying C<sub name;>). If C<create> is not set and the
1820 subroutine does not exist then NULL is returned.
1826 Perl_get_cv(pTHX_ const char *name, I32 create)
1828 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1829 /* XXX unsafe for threads if eval_owner isn't held */
1830 /* XXX this is probably not what they think they're getting.
1831 * It has the same effect as "sub name;", i.e. just a forward
1833 if (create && !GvCVu(gv))
1834 return newSUB(start_subparse(FALSE, 0),
1835 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1843 /* Be sure to refetch the stack pointer after calling these routines. */
1847 =head1 Callback Functions
1849 =for apidoc p||call_argv
1851 Performs a callback to the specified Perl sub. See L<perlcall>.
1857 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1859 /* See G_* flags in cop.h */
1860 /* null terminated arg list */
1867 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1872 return call_pv(sub_name, flags);
1876 =for apidoc p||call_pv
1878 Performs a callback to the specified Perl sub. See L<perlcall>.
1884 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1885 /* name of the subroutine */
1886 /* See G_* flags in cop.h */
1888 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1892 =for apidoc p||call_method
1894 Performs a callback to the specified Perl method. The blessed object must
1895 be on the stack. See L<perlcall>.
1901 Perl_call_method(pTHX_ const char *methname, I32 flags)
1902 /* name of the subroutine */
1903 /* See G_* flags in cop.h */
1905 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1908 /* May be called with any of a CV, a GV, or an SV containing the name. */
1910 =for apidoc p||call_sv
1912 Performs a callback to the Perl sub whose name is in the SV. See
1919 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1920 /* See G_* flags in cop.h */
1923 LOGOP myop; /* fake syntax tree node */
1926 volatile I32 retval = 0;
1928 bool oldcatch = CATCH_GET;
1933 if (flags & G_DISCARD) {
1938 Zero(&myop, 1, LOGOP);
1939 myop.op_next = Nullop;
1940 if (!(flags & G_NOARGS))
1941 myop.op_flags |= OPf_STACKED;
1942 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1943 (flags & G_ARRAY) ? OPf_WANT_LIST :
1948 EXTEND(PL_stack_sp, 1);
1949 *++PL_stack_sp = sv;
1951 oldscope = PL_scopestack_ix;
1953 if (PERLDB_SUB && PL_curstash != PL_debstash
1954 /* Handle first BEGIN of -d. */
1955 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1956 /* Try harder, since this may have been a sighandler, thus
1957 * curstash may be meaningless. */
1958 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1959 && !(flags & G_NODEBUG))
1960 PL_op->op_private |= OPpENTERSUB_DB;
1962 if (flags & G_METHOD) {
1963 Zero(&method_op, 1, UNOP);
1964 method_op.op_next = PL_op;
1965 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1966 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1967 PL_op = (OP*)&method_op;
1970 if (!(flags & G_EVAL)) {
1972 call_body((OP*)&myop, FALSE);
1973 retval = PL_stack_sp - (PL_stack_base + oldmark);
1974 CATCH_SET(oldcatch);
1977 myop.op_other = (OP*)&myop;
1979 /* we're trying to emulate pp_entertry() here */
1981 register PERL_CONTEXT *cx;
1982 I32 gimme = GIMME_V;
1987 push_return(Nullop);
1988 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1990 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1992 PL_in_eval = EVAL_INEVAL;
1993 if (flags & G_KEEPERR)
1994 PL_in_eval |= EVAL_KEEPERR;
2000 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2002 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2009 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2011 call_body((OP*)&myop, FALSE);
2013 retval = PL_stack_sp - (PL_stack_base + oldmark);
2014 if (!(flags & G_KEEPERR))
2021 /* my_exit() was called */
2022 PL_curstash = PL_defstash;
2025 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2026 Perl_croak(aTHX_ "Callback called exit");
2031 PL_op = PL_restartop;
2035 PL_stack_sp = PL_stack_base + oldmark;
2036 if (flags & G_ARRAY)
2040 *++PL_stack_sp = &PL_sv_undef;
2045 if (PL_scopestack_ix > oldscope) {
2049 register PERL_CONTEXT *cx;
2061 if (flags & G_DISCARD) {
2062 PL_stack_sp = PL_stack_base + oldmark;
2071 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2073 S_vcall_body(pTHX_ va_list args)
2075 OP *myop = va_arg(args, OP*);
2076 int is_eval = va_arg(args, int);
2078 call_body(myop, is_eval);
2084 S_call_body(pTHX_ OP *myop, int is_eval)
2086 if (PL_op == myop) {
2088 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2090 PL_op = Perl_pp_entersub(aTHX); /* this does */
2096 /* Eval a string. The G_EVAL flag is always assumed. */
2099 =for apidoc p||eval_sv
2101 Tells Perl to C<eval> the string in the SV.
2107 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2109 /* See G_* flags in cop.h */
2112 UNOP myop; /* fake syntax tree node */
2113 volatile I32 oldmark = SP - PL_stack_base;
2114 volatile I32 retval = 0;
2120 if (flags & G_DISCARD) {
2127 Zero(PL_op, 1, UNOP);
2128 EXTEND(PL_stack_sp, 1);
2129 *++PL_stack_sp = sv;
2130 oldscope = PL_scopestack_ix;
2132 if (!(flags & G_NOARGS))
2133 myop.op_flags = OPf_STACKED;
2134 myop.op_next = Nullop;
2135 myop.op_type = OP_ENTEREVAL;
2136 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2137 (flags & G_ARRAY) ? OPf_WANT_LIST :
2139 if (flags & G_KEEPERR)
2140 myop.op_flags |= OPf_SPECIAL;
2142 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2144 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2151 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2153 call_body((OP*)&myop,TRUE);
2155 retval = PL_stack_sp - (PL_stack_base + oldmark);
2156 if (!(flags & G_KEEPERR))
2163 /* my_exit() was called */
2164 PL_curstash = PL_defstash;
2167 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2168 Perl_croak(aTHX_ "Callback called exit");
2173 PL_op = PL_restartop;
2177 PL_stack_sp = PL_stack_base + oldmark;
2178 if (flags & G_ARRAY)
2182 *++PL_stack_sp = &PL_sv_undef;
2188 if (flags & G_DISCARD) {
2189 PL_stack_sp = PL_stack_base + oldmark;
2199 =for apidoc p||eval_pv
2201 Tells Perl to C<eval> the given string and return an SV* result.
2207 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2210 SV* sv = newSVpv(p, 0);
2212 eval_sv(sv, G_SCALAR);
2219 if (croak_on_error && SvTRUE(ERRSV)) {
2221 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2227 /* Require a module. */
2230 =head1 Embedding Functions
2232 =for apidoc p||require_pv
2234 Tells Perl to C<require> the file named by the string argument. It is
2235 analogous to the Perl code C<eval "require '$file'">. It's even
2236 implemented that way; consider using load_module instead.
2241 Perl_require_pv(pTHX_ const char *pv)
2245 PUSHSTACKi(PERLSI_REQUIRE);
2247 sv = sv_newmortal();
2248 sv_setpv(sv, "require '");
2251 eval_sv(sv, G_DISCARD);
2257 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2261 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2262 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2266 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2268 /* This message really ought to be max 23 lines.
2269 * Removed -h because the user already knows that option. Others? */
2271 static char *usage_msg[] = {
2272 "-0[octal] specify record separator (\\0, if no argument)",
2273 "-a autosplit mode with -n or -p (splits $_ into @F)",
2274 "-C[number/list] enables the listed Unicode features",
2275 "-c check syntax only (runs BEGIN and CHECK blocks)",
2276 "-d[:debugger] run program under debugger",
2277 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2278 "-e program one line of program (several -e's allowed, omit programfile)",
2279 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2280 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2281 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2282 "-l[octal] enable line ending processing, specifies line terminator",
2283 "-[mM][-]module execute `use/no module...' before executing program",
2284 "-n assume 'while (<>) { ... }' loop around program",
2285 "-p assume loop like -n but print line also, like sed",
2286 "-P run program through C preprocessor before compilation",
2287 "-s enable rudimentary parsing for switches after programfile",
2288 "-S look for programfile using PATH environment variable",
2289 "-t enable tainting warnings",
2290 "-T enable tainting checks",
2291 "-u dump core after parsing program",
2292 "-U allow unsafe operations",
2293 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2294 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2295 "-w enable many useful warnings (RECOMMENDED)",
2296 "-W enable all warnings",
2297 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2298 "-X disable all warnings",
2302 char **p = usage_msg;
2304 PerlIO_printf(PerlIO_stdout(),
2305 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2308 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2311 /* convert a string of -D options (or digits) into an int.
2312 * sets *s to point to the char after the options */
2316 Perl_get_debug_opts(pTHX_ char **s)
2320 /* if adding extra options, remember to update DEBUG_MASK */
2321 static char debopts[] = "psltocPmfrxu HXDSTRJvCAq";
2323 for (; isALNUM(**s); (*s)++) {
2324 char *d = strchr(debopts,**s);
2326 i |= 1 << (d - debopts);
2327 else if (ckWARN_d(WARN_DEBUGGING))
2328 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2329 "invalid option -D%c\n", **s);
2334 for (; isALNUM(**s); (*s)++) ;
2337 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2338 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2339 "-Dp not implemented on this platform\n");
2345 /* This routine handles any switches that can be given during run */
2348 Perl_moreswitches(pTHX_ char *s)
2358 SvREFCNT_dec(PL_rs);
2359 if (s[1] == 'x' && s[2]) {
2363 for (s += 2, e = s; *e; e++);
2365 flags = PERL_SCAN_SILENT_ILLDIGIT;
2366 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2367 if (s + numlen < e) {
2368 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2372 PL_rs = newSVpvn("", 0);
2373 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2374 tmps = (U8*)SvPVX(PL_rs);
2375 uvchr_to_utf8(tmps, rschar);
2376 SvCUR_set(PL_rs, UNISKIP(rschar));
2381 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2382 if (rschar & ~((U8)~0))
2383 PL_rs = &PL_sv_undef;
2384 else if (!rschar && numlen >= 2)
2385 PL_rs = newSVpvn("", 0);
2387 char ch = (char)rschar;
2388 PL_rs = newSVpvn(&ch, 1);
2391 sv_setsv(get_sv("/", TRUE), PL_rs);
2396 PL_unicode = parse_unicode_opts(&s);
2401 while (*s && !isSPACE(*s)) ++s;
2403 PL_splitstr = savepv(PL_splitstr);
2416 /* The following permits -d:Mod to accepts arguments following an =
2417 in the fashion that -MSome::Mod does. */
2418 if (*s == ':' || *s == '=') {
2421 sv = newSVpv("use Devel::", 0);
2423 /* We now allow -d:Module=Foo,Bar */
2424 while(isALNUM(*s) || *s==':') ++s;
2426 sv_catpv(sv, start);
2428 sv_catpvn(sv, start, s-start);
2429 sv_catpv(sv, " split(/,/,q{");
2434 my_setenv("PERL5DB", SvPV(sv, PL_na));
2437 PL_perldb = PERLDB_ALL;
2446 PL_debug = get_debug_opts(&s) | DEBUG_TOP_FLAG;
2447 #else /* !DEBUGGING */
2448 if (ckWARN_d(WARN_DEBUGGING))
2449 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2450 "Recompile perl with -DDEBUGGING to use -D switch\n");
2451 for (s++; isALNUM(*s); s++) ;
2457 usage(PL_origargv[0]);
2461 Safefree(PL_inplace);
2462 #if defined(__CYGWIN__) /* do backup extension automagically */
2463 if (*(s+1) == '\0') {
2464 PL_inplace = savepv(".bak");
2467 #endif /* __CYGWIN__ */
2468 PL_inplace = savepv(s+1);
2470 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2473 if (*s == '-') /* Additional switches on #! line. */
2477 case 'I': /* -I handled both here and in parse_body() */
2480 while (*s && isSPACE(*s))
2485 /* ignore trailing spaces (possibly followed by other switches) */
2487 for (e = p; *e && !isSPACE(*e); e++) ;
2491 } while (*p && *p != '-');
2492 e = savepvn(s, e-s);
2493 incpush(e, TRUE, TRUE, FALSE);
2500 Perl_croak(aTHX_ "No directory specified for -I");
2506 SvREFCNT_dec(PL_ors_sv);
2511 PL_ors_sv = newSVpvn("\n",1);
2512 numlen = 3 + (*s == '0');
2513 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2517 if (RsPARA(PL_rs)) {
2518 PL_ors_sv = newSVpvn("\n\n",2);
2521 PL_ors_sv = newSVsv(PL_rs);
2528 PL_preambleav = newAV();
2530 SV *sv = newSVpv("use assertions::activate split(/,/,q", 0);
2531 sv_catpvn(sv, "\0", 1); /* Use NUL as q//-delimiter. */
2533 sv_catpvn(sv, "\0)", 2);
2535 av_push(PL_preambleav, sv);
2538 av_push(PL_preambleav, newSVpvn("use assertions::activate",24));
2541 forbid_setid("-M"); /* XXX ? */
2544 forbid_setid("-m"); /* XXX ? */
2549 /* -M-foo == 'no foo' */
2550 if (*s == '-') { use = "no "; ++s; }
2551 sv = newSVpv(use,0);
2553 /* We allow -M'Module qw(Foo Bar)' */
2554 while(isALNUM(*s) || *s==':') ++s;
2556 sv_catpv(sv, start);
2557 if (*(start-1) == 'm') {
2559 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2560 sv_catpv( sv, " ()");
2564 Perl_croak(aTHX_ "Module name required with -%c option",
2566 sv_catpvn(sv, start, s-start);
2567 sv_catpv(sv, " split(/,/,q");
2568 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
2570 sv_catpvn(sv, "\0)", 2);
2574 PL_preambleav = newAV();
2575 av_push(PL_preambleav, sv);
2578 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2590 PL_doswitches = TRUE;
2604 #ifdef MACOS_TRADITIONAL
2605 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2607 PL_do_undump = TRUE;
2616 PerlIO_printf(PerlIO_stdout(),
2617 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2618 PL_patchlevel, ARCHNAME));
2620 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2621 PerlIO_printf(PerlIO_stdout(),
2622 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2623 PerlIO_printf(PerlIO_stdout(),
2624 Perl_form(aTHX_ " built under %s at %s %s\n",
2625 OSNAME, __DATE__, __TIME__));
2626 PerlIO_printf(PerlIO_stdout(),
2627 Perl_form(aTHX_ " OS Specific Release: %s\n",
2631 #if defined(LOCAL_PATCH_COUNT)
2632 if (LOCAL_PATCH_COUNT > 0)
2633 PerlIO_printf(PerlIO_stdout(),
2634 "\n(with %d registered patch%s, "
2635 "see perl -V for more detail)",
2636 (int)LOCAL_PATCH_COUNT,
2637 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2640 PerlIO_printf(PerlIO_stdout(),
2641 "\n\nCopyright 1987-2003, Larry Wall\n");
2642 #ifdef MACOS_TRADITIONAL
2643 PerlIO_printf(PerlIO_stdout(),
2644 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2645 "maintained by Chris Nandor\n");
2648 PerlIO_printf(PerlIO_stdout(),
2649 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2652 PerlIO_printf(PerlIO_stdout(),
2653 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2654 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2657 PerlIO_printf(PerlIO_stdout(),
2658 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2659 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2662 PerlIO_printf(PerlIO_stdout(),
2663 "atariST series port, ++jrb bammi@cadence.com\n");
2666 PerlIO_printf(PerlIO_stdout(),
2667 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2670 PerlIO_printf(PerlIO_stdout(),
2671 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
2674 PerlIO_printf(PerlIO_stdout(),
2675 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2678 PerlIO_printf(PerlIO_stdout(),
2679 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2682 PerlIO_printf(PerlIO_stdout(),
2683 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2686 PerlIO_printf(PerlIO_stdout(),
2687 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2690 PerlIO_printf(PerlIO_stdout(),
2691 "MiNT port by Guido Flohr, 1997-1999\n");
2694 PerlIO_printf(PerlIO_stdout(),
2695 "EPOC port by Olaf Flebbe, 1999-2002\n");
2698 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
2699 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
2702 #ifdef BINARY_BUILD_NOTICE
2703 BINARY_BUILD_NOTICE;
2705 PerlIO_printf(PerlIO_stdout(),
2707 Perl may be copied only under the terms of either the Artistic License or the\n\
2708 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2709 Complete documentation for Perl, including FAQ lists, should be found on\n\
2710 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2711 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2714 if (! (PL_dowarn & G_WARN_ALL_MASK))
2715 PL_dowarn |= G_WARN_ON;
2719 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2720 if (!specialWARN(PL_compiling.cop_warnings))
2721 SvREFCNT_dec(PL_compiling.cop_warnings);
2722 PL_compiling.cop_warnings = pWARN_ALL ;
2726 PL_dowarn = G_WARN_ALL_OFF;
2727 if (!specialWARN(PL_compiling.cop_warnings))
2728 SvREFCNT_dec(PL_compiling.cop_warnings);
2729 PL_compiling.cop_warnings = pWARN_NONE ;
2734 if (s[1] == '-') /* Additional switches on #! line. */
2739 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2745 #ifdef ALTERNATE_SHEBANG
2746 case 'S': /* OS/2 needs -S on "extproc" line. */
2754 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2759 /* compliments of Tom Christiansen */
2761 /* unexec() can be found in the Gnu emacs distribution */
2762 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2765 Perl_my_unexec(pTHX)
2773 prog = newSVpv(BIN_EXP, 0);
2774 sv_catpv(prog, "/perl");
2775 file = newSVpv(PL_origfilename, 0);
2776 sv_catpv(file, ".perldump");
2778 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2779 /* unexec prints msg to stderr in case of failure */
2780 PerlProc_exit(status);
2783 # include <lib$routines.h>
2784 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2786 ABORT(); /* for use with undump */
2791 /* initialize curinterp */
2797 # define PERLVAR(var,type)
2798 # define PERLVARA(var,n,type)
2799 # if defined(PERL_IMPLICIT_CONTEXT)
2800 # if defined(USE_5005THREADS)
2801 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2802 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2803 # else /* !USE_5005THREADS */
2804 # define PERLVARI(var,type,init) aTHX->var = init;
2805 # define PERLVARIC(var,type,init) aTHX->var = init;
2806 # endif /* USE_5005THREADS */
2808 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2809 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2811 # include "intrpvar.h"
2812 # ifndef USE_5005THREADS
2813 # include "thrdvar.h"
2820 # define PERLVAR(var,type)
2821 # define PERLVARA(var,n,type)
2822 # define PERLVARI(var,type,init) PL_##var = init;
2823 # define PERLVARIC(var,type,init) PL_##var = init;
2824 # include "intrpvar.h"
2825 # ifndef USE_5005THREADS
2826 # include "thrdvar.h"
2837 S_init_main_stash(pTHX)
2841 PL_curstash = PL_defstash = newHV();
2842 PL_curstname = newSVpvn("main",4);
2843 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2844 SvREFCNT_dec(GvHV(gv));
2845 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2847 HvNAME(PL_defstash) = savepv("main");
2848 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2849 GvMULTI_on(PL_incgv);
2850 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2851 GvMULTI_on(PL_hintgv);
2852 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2853 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2854 GvMULTI_on(PL_errgv);
2855 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2856 GvMULTI_on(PL_replgv);
2857 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2858 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2859 sv_setpvn(ERRSV, "", 0);
2860 PL_curstash = PL_defstash;
2861 CopSTASH_set(&PL_compiling, PL_defstash);
2862 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2863 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2864 /* We must init $/ before switches are processed. */
2865 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2869 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2873 char *cpp_discard_flag;
2879 PL_origfilename = savepv("-e");
2882 /* if find_script() returns, it returns a malloc()-ed value */
2883 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2885 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2886 char *s = scriptname + 8;
2887 *fdscript = atoi(s);
2891 scriptname = savepv(s + 1);
2892 Safefree(PL_origfilename);
2893 PL_origfilename = scriptname;
2898 CopFILE_free(PL_curcop);
2899 CopFILE_set(PL_curcop, PL_origfilename);
2900 if (strEQ(PL_origfilename,"-"))
2902 if (*fdscript >= 0) {
2903 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2904 # if defined(HAS_FCNTL) && defined(F_SETFD)
2906 /* ensure close-on-exec */
2907 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2910 else if (PL_preprocess) {
2911 char *cpp_cfg = CPPSTDIN;
2912 SV *cpp = newSVpvn("",0);
2913 SV *cmd = NEWSV(0,0);
2915 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
2916 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
2917 if (strEQ(cpp_cfg, "cppstdin"))
2918 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2919 sv_catpv(cpp, cpp_cfg);
2922 sv_catpvn(sv, "-I", 2);
2923 sv_catpv(sv,PRIVLIB_EXP);
2926 DEBUG_P(PerlIO_printf(Perl_debug_log,
2927 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2928 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2930 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2937 cpp_discard_flag = "";
2939 cpp_discard_flag = "-C";
2943 perl = os2_execname(aTHX);
2945 perl = PL_origargv[0];
2949 /* This strips off Perl comments which might interfere with
2950 the C pre-processor, including #!. #line directives are
2951 deliberately stripped to avoid confusion with Perl's version
2952 of #line. FWP played some golf with it so it will fit
2953 into VMS's 255 character buffer.
2956 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2958 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2960 Perl_sv_setpvf(aTHX_ cmd, "\
2961 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2962 perl, quote, code, quote, scriptname, cpp,
2963 cpp_discard_flag, sv, CPPMINUS);
2965 PL_doextract = FALSE;
2966 # ifdef IAMSUID /* actually, this is caught earlier */
2967 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2969 (void)seteuid(PL_uid); /* musn't stay setuid root */
2971 # ifdef HAS_SETREUID
2972 (void)setreuid((Uid_t)-1, PL_uid);
2974 # ifdef HAS_SETRESUID
2975 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2977 PerlProc_setuid(PL_uid);
2981 if (PerlProc_geteuid() != PL_uid)
2982 Perl_croak(aTHX_ "Can't do seteuid!\n");
2984 # endif /* IAMSUID */
2986 DEBUG_P(PerlIO_printf(Perl_debug_log,
2987 "PL_preprocess: cmd=\"%s\"\n",
2990 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2994 else if (!*scriptname) {
2995 forbid_setid("program input from stdin");
2996 PL_rsfp = PerlIO_stdin();
2999 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3000 # if defined(HAS_FCNTL) && defined(F_SETFD)
3002 /* ensure close-on-exec */
3003 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3008 # ifndef IAMSUID /* in case script is not readable before setuid */
3010 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
3011 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
3015 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
3016 BIN_EXP, (int)PERL_REVISION,
3018 (int)PERL_SUBVERSION), PL_origargv);
3020 Perl_croak(aTHX_ "Can't do setuid\n");
3026 Perl_croak(aTHX_ "Permission denied\n");
3028 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3029 CopFILE(PL_curcop), Strerror(errno));
3035 * I_SYSSTATVFS HAS_FSTATVFS
3037 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3038 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3039 * here so that metaconfig picks them up. */
3043 S_fd_on_nosuid_fs(pTHX_ int fd)
3045 int check_okay = 0; /* able to do all the required sys/libcalls */
3046 int on_nosuid = 0; /* the fd is on a nosuid fs */
3048 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
3049 * fstatvfs() is UNIX98.
3050 * fstatfs() is 4.3 BSD.
3051 * ustat()+getmnt() is pre-4.3 BSD.
3052 * getmntent() is O(number-of-mounted-filesystems) and can hang on
3053 * an irrelevant filesystem while trying to reach the right one.
3056 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
3058 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3059 defined(HAS_FSTATVFS)
3060 # define FD_ON_NOSUID_CHECK_OKAY
3061 struct statvfs stfs;
3063 check_okay = fstatvfs(fd, &stfs) == 0;
3064 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
3065 # endif /* fstatvfs */
3067 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3068 defined(PERL_MOUNT_NOSUID) && \
3069 defined(HAS_FSTATFS) && \
3070 defined(HAS_STRUCT_STATFS) && \
3071 defined(HAS_STRUCT_STATFS_F_FLAGS)
3072 # define FD_ON_NOSUID_CHECK_OKAY
3075 check_okay = fstatfs(fd, &stfs) == 0;
3076 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
3077 # endif /* fstatfs */
3079 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3080 defined(PERL_MOUNT_NOSUID) && \
3081 defined(HAS_FSTAT) && \
3082 defined(HAS_USTAT) && \
3083 defined(HAS_GETMNT) && \
3084 defined(HAS_STRUCT_FS_DATA) && \
3086 # define FD_ON_NOSUID_CHECK_OKAY
3089 if (fstat(fd, &fdst) == 0) {
3091 if (ustat(fdst.st_dev, &us) == 0) {
3093 /* NOSTAT_ONE here because we're not examining fields which
3094 * vary between that case and STAT_ONE. */
3095 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
3096 size_t cmplen = sizeof(us.f_fname);
3097 if (sizeof(fsd.fd_req.path) < cmplen)
3098 cmplen = sizeof(fsd.fd_req.path);
3099 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
3100 fdst.st_dev == fsd.fd_req.dev) {
3102 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
3108 # endif /* fstat+ustat+getmnt */
3110 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3111 defined(HAS_GETMNTENT) && \
3112 defined(HAS_HASMNTOPT) && \
3113 defined(MNTOPT_NOSUID)
3114 # define FD_ON_NOSUID_CHECK_OKAY
3115 FILE *mtab = fopen("/etc/mtab", "r");
3116 struct mntent *entry;
3119 if (mtab && (fstat(fd, &stb) == 0)) {
3120 while (entry = getmntent(mtab)) {
3121 if (stat(entry->mnt_dir, &fsb) == 0
3122 && fsb.st_dev == stb.st_dev)
3124 /* found the filesystem */
3126 if (hasmntopt(entry, MNTOPT_NOSUID))
3129 } /* A single fs may well fail its stat(). */
3134 # endif /* getmntent+hasmntopt */
3137 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
3140 #endif /* IAMSUID */
3143 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
3149 /* do we need to emulate setuid on scripts? */
3151 /* This code is for those BSD systems that have setuid #! scripts disabled
3152 * in the kernel because of a security problem. Merely defining DOSUID
3153 * in perl will not fix that problem, but if you have disabled setuid
3154 * scripts in the kernel, this will attempt to emulate setuid and setgid
3155 * on scripts that have those now-otherwise-useless bits set. The setuid
3156 * root version must be called suidperl or sperlN.NNN. If regular perl
3157 * discovers that it has opened a setuid script, it calls suidperl with
3158 * the same argv that it had. If suidperl finds that the script it has
3159 * just opened is NOT setuid root, it sets the effective uid back to the
3160 * uid. We don't just make perl setuid root because that loses the
3161 * effective uid we had before invoking perl, if it was different from the
3164 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3165 * be defined in suidperl only. suidperl must be setuid root. The
3166 * Configure script will set this up for you if you want it.
3172 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3173 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3174 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3179 #ifndef HAS_SETREUID
3180 /* On this access check to make sure the directories are readable,
3181 * there is actually a small window that the user could use to make
3182 * filename point to an accessible directory. So there is a faint
3183 * chance that someone could execute a setuid script down in a
3184 * non-accessible directory. I don't know what to do about that.
3185 * But I don't think it's too important. The manual lies when
3186 * it says access() is useful in setuid programs.
3188 if (PerlLIO_access(CopFILE(PL_curcop),1)) { /*double check*/
3190 Perl_croak(aTHX_ "Permission denied\n");
3193 /* If we can swap euid and uid, then we can determine access rights
3194 * with a simple stat of the file, and then compare device and
3195 * inode to make sure we did stat() on the same file we opened.
3196 * Then we just have to make sure he or she can execute it.
3203 setreuid(PL_euid,PL_uid) < 0
3206 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3209 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3210 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3211 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0) {
3213 Perl_croak(aTHX_ "Permission denied\n"); /* testing full pathname here */
3215 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3216 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp))) {
3218 Perl_croak(aTHX_ "Permission denied\n");
3221 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3222 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3223 (void)PerlIO_close(PL_rsfp);
3225 Perl_croak(aTHX_ "Permission denied\n");
3229 setreuid(PL_uid,PL_euid) < 0
3231 # if defined(HAS_SETRESUID)
3232 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3235 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3236 Perl_croak(aTHX_ "Can't reswap uid and euid");
3237 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3238 Perl_croak(aTHX_ "Permission denied\n");
3240 #endif /* HAS_SETREUID */
3241 #endif /* IAMSUID */
3243 if (!S_ISREG(PL_statbuf.st_mode)) {
3245 Perl_croak(aTHX_ "Permission denied\n");
3247 if (PL_statbuf.st_mode & S_IWOTH)
3248 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3249 PL_doswitches = FALSE; /* -s is insecure in suid */
3250 CopLINE_inc(PL_curcop);
3251 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3252 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3253 Perl_croak(aTHX_ "No #! line");
3254 s = SvPV(PL_linestr,n_a)+2;
3256 while (!isSPACE(*s)) s++;
3257 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3258 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3259 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3260 Perl_croak(aTHX_ "Not a perl script");
3261 while (*s == ' ' || *s == '\t') s++;
3263 * #! arg must be what we saw above. They can invoke it by
3264 * mentioning suidperl explicitly, but they may not add any strange
3265 * arguments beyond what #! says if they do invoke suidperl that way.
3267 len = strlen(validarg);
3268 if (strEQ(validarg," PHOOEY ") ||
3269 strnNE(s,validarg,len) || !isSPACE(s[len]))
3270 Perl_croak(aTHX_ "Args must match #! line");
3273 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3274 PL_euid == PL_statbuf.st_uid)
3276 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3277 FIX YOUR KERNEL, OR PUT A C WRAPPER AROUND THIS SCRIPT!\n");
3278 #endif /* IAMSUID */
3280 if (PL_euid) { /* oops, we're not the setuid root perl */
3281 (void)PerlIO_close(PL_rsfp);
3285 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3286 (int)PERL_REVISION, (int)PERL_VERSION,
3287 (int)PERL_SUBVERSION), PL_origargv);
3290 Perl_croak(aTHX_ "Can't do setuid\n");
3293 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3295 (void)setegid(PL_statbuf.st_gid);
3298 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3300 #ifdef HAS_SETRESGID
3301 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3303 PerlProc_setgid(PL_statbuf.st_gid);
3307 if (PerlProc_getegid() != PL_statbuf.st_gid)
3308 Perl_croak(aTHX_ "Can't do setegid!\n");
3310 if (PL_statbuf.st_mode & S_ISUID) {
3311 if (PL_statbuf.st_uid != PL_euid)
3313 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3316 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3318 #ifdef HAS_SETRESUID
3319 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3321 PerlProc_setuid(PL_statbuf.st_uid);
3325 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3326 Perl_croak(aTHX_ "Can't do seteuid!\n");
3328 else if (PL_uid) { /* oops, mustn't run as root */
3330 (void)seteuid((Uid_t)PL_uid);
3333 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3335 #ifdef HAS_SETRESUID
3336 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3338 PerlProc_setuid((Uid_t)PL_uid);
3342 if (PerlProc_geteuid() != PL_uid)
3343 Perl_croak(aTHX_ "Can't do seteuid!\n");
3346 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3347 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3350 else if (PL_preprocess)
3351 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3352 else if (fdscript >= 0)
3353 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3356 Perl_croak(aTHX_ "Permission denied\n");
3359 /* We absolutely must clear out any saved ids here, so we */
3360 /* exec the real perl, substituting fd script for scriptname. */
3361 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3362 PerlIO_rewind(PL_rsfp);
3363 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3364 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3365 if (!PL_origargv[which]) {
3367 Perl_croak(aTHX_ "Permission denied\n");
3369 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3370 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3371 #if defined(HAS_FCNTL) && defined(F_SETFD)
3372 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3375 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3376 (int)PERL_REVISION, (int)PERL_VERSION,
3377 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3379 Perl_croak(aTHX_ "Can't do setuid\n");
3380 #endif /* IAMSUID */
3382 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3383 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3384 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3385 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3387 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3390 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3391 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3392 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3393 /* not set-id, must be wrapped */
3399 S_find_beginning(pTHX)
3401 register char *s, *s2;
3402 #ifdef MACOS_TRADITIONAL
3406 /* skip forward in input to the real script? */
3409 #ifdef MACOS_TRADITIONAL
3410 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3412 while (PL_doextract || gMacPerl_AlwaysExtract) {
3413 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3414 if (!gMacPerl_AlwaysExtract)
3415 Perl_croak(aTHX_ "No Perl script found in input\n");
3417 if (PL_doextract) /* require explicit override ? */
3418 if (!OverrideExtract(PL_origfilename))
3419 Perl_croak(aTHX_ "User aborted script\n");
3421 PL_doextract = FALSE;
3423 /* Pater peccavi, file does not have #! */
3424 PerlIO_rewind(PL_rsfp);
3429 while (PL_doextract) {
3430 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3431 Perl_croak(aTHX_ "No Perl script found in input\n");
3434 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3435 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3436 PL_doextract = FALSE;
3437 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3439 while (*s == ' ' || *s == '\t') s++;
3441 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3442 if (strnEQ(s2-4,"perl",4))
3444 while ((s = moreswitches(s)))
3447 #ifdef MACOS_TRADITIONAL
3448 /* We are always searching for the #!perl line in MacPerl,
3449 * so if we find it, still keep the line count correct
3450 * by counting lines we already skipped over
3452 for (; maclines > 0 ; maclines--)
3453 PerlIO_ungetc(PL_rsfp, '\n');
3457 /* gMacPerl_AlwaysExtract is false in MPW tool */
3458 } else if (gMacPerl_AlwaysExtract) {
3469 PL_uid = PerlProc_getuid();
3470 PL_euid = PerlProc_geteuid();
3471 PL_gid = PerlProc_getgid();
3472 PL_egid = PerlProc_getegid();
3474 PL_uid |= PL_gid << 16;
3475 PL_euid |= PL_egid << 16;
3477 /* Should not happen: */
3478 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3479 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3482 /* This is used very early in the lifetime of the program,
3483 * before even the options are parsed, so PL_tainting has
3484 * not been initialized properly. */
3486 Perl_doing_taint(int argc, char *argv[], char *envp[])
3488 #ifndef PERL_IMPLICIT_SYS
3489 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3490 * before we have an interpreter-- and the whole point of this
3491 * function is to be called at such an early stage. If you are on
3492 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3493 * "tainted because running with altered effective ids', you'll
3494 * have to add your own checks somewhere in here. The two most
3495 * known samples of 'implicitness' are Win32 and NetWare, neither
3496 * of which has much of concept of 'uids'. */
3497 int uid = PerlProc_getuid();
3498 int euid = PerlProc_geteuid();
3499 int gid = PerlProc_getgid();
3500 int egid = PerlProc_getegid();
3506 if (uid && (euid != uid || egid != gid))
3508 #endif /* !PERL_IMPLICIT_SYS */
3509 /* This is a really primitive check; environment gets ignored only
3510 * if -T are the first chars together; otherwise one gets
3511 * "Too late" message. */
3512 if ( argc > 1 && argv[1][0] == '-'
3513 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3519 S_forbid_setid(pTHX_ char *s)
3521 if (PL_euid != PL_uid)
3522 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3523 if (PL_egid != PL_gid)
3524 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3528 Perl_init_debugger(pTHX)
3530 HV *ostash = PL_curstash;
3532 PL_curstash = PL_debstash;
3533 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("DB::args", GV_ADDMULTI, SVt_PVAV))));
3534 AvREAL_off(PL_dbargs);
3535 PL_DBgv = gv_fetchpv("DB::DB", GV_ADDMULTI, SVt_PVGV);
3536 PL_DBline = gv_fetchpv("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3537 PL_DBsub = gv_HVadd(gv_fetchpv("DB::sub", GV_ADDMULTI, SVt_PVHV));
3538 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3539 PL_DBsingle = GvSV((gv_fetchpv("DB::single", GV_ADDMULTI, SVt_PV)));
3540 sv_setiv(PL_DBsingle, 0);
3541 PL_DBtrace = GvSV((gv_fetchpv("DB::trace", GV_ADDMULTI, SVt_PV)));
3542 sv_setiv(PL_DBtrace, 0);
3543 PL_DBsignal = GvSV((gv_fetchpv("DB::signal", GV_ADDMULTI, SVt_PV)));
3544 sv_setiv(PL_DBsignal, 0);
3545 PL_DBassertion = GvSV((gv_fetchpv("DB::assertion", GV_ADDMULTI, SVt_PV)));
3546 sv_setiv(PL_DBassertion, 0);
3547 PL_curstash = ostash;
3550 #ifndef STRESS_REALLOC
3551 #define REASONABLE(size) (size)
3553 #define REASONABLE(size) (1) /* unreasonable */
3557 Perl_init_stacks(pTHX)
3559 /* start with 128-item stack and 8K cxstack */
3560 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3561 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3562 PL_curstackinfo->si_type = PERLSI_MAIN;
3563 PL_curstack = PL_curstackinfo->si_stack;
3564 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3566 PL_stack_base = AvARRAY(PL_curstack);
3567 PL_stack_sp = PL_stack_base;
3568 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3570 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3573 PL_tmps_max = REASONABLE(128);
3575 New(54,PL_markstack,REASONABLE(32),I32);
3576 PL_markstack_ptr = PL_markstack;
3577 PL_markstack_max = PL_markstack + REASONABLE(32);
3581 New(54,PL_scopestack,REASONABLE(32),I32);
3582 PL_scopestack_ix = 0;
3583 PL_scopestack_max = REASONABLE(32);
3585 New(54,PL_savestack,REASONABLE(128),ANY);
3586 PL_savestack_ix = 0;
3587 PL_savestack_max = REASONABLE(128);
3589 New(54,PL_retstack,REASONABLE(16),OP*);
3591 PL_retstack_max = REASONABLE(16);
3599 while (PL_curstackinfo->si_next)
3600 PL_curstackinfo = PL_curstackinfo->si_next;
3601 while (PL_curstackinfo) {
3602 PERL_SI *p = PL_curstackinfo->si_prev;
3603 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3604 Safefree(PL_curstackinfo->si_cxstack);
3605 Safefree(PL_curstackinfo);
3606 PL_curstackinfo = p;
3608 Safefree(PL_tmps_stack);
3609 Safefree(PL_markstack);
3610 Safefree(PL_scopestack);
3611 Safefree(PL_savestack);
3612 Safefree(PL_retstack);
3621 lex_start(PL_linestr);
3623 PL_subname = newSVpvn("main",4);
3627 S_init_predump_symbols(pTHX)
3632 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3633 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3634 GvMULTI_on(PL_stdingv);
3635 io = GvIOp(PL_stdingv);
3636 IoTYPE(io) = IoTYPE_RDONLY;
3637 IoIFP(io) = PerlIO_stdin();
3638 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3640 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3642 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3645 IoTYPE(io) = IoTYPE_WRONLY;
3646 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3648 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3650 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3652 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3653 GvMULTI_on(PL_stderrgv);
3654 io = GvIOp(PL_stderrgv);
3655 IoTYPE(io) = IoTYPE_WRONLY;
3656 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3657 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3659 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3661 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3664 Safefree(PL_osname);
3665 PL_osname = savepv(OSNAME);
3669 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3672 argc--,argv++; /* skip name of script */
3673 if (PL_doswitches) {
3674 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3677 if (argv[0][1] == '-' && !argv[0][2]) {
3681 if ((s = strchr(argv[0], '='))) {
3683 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3686 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3689 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3690 GvMULTI_on(PL_argvgv);
3691 (void)gv_AVadd(PL_argvgv);
3692 av_clear(GvAVn(PL_argvgv));
3693 for (; argc > 0; argc--,argv++) {
3694 SV *sv = newSVpv(argv[0],0);
3695 av_push(GvAVn(PL_argvgv),sv);
3696 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3697 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3700 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3701 (void)sv_utf8_decode(sv);
3706 #ifdef HAS_PROCSELFEXE
3707 /* This is a function so that we don't hold on to MAXPATHLEN
3708 bytes of stack longer than necessary
3711 S_procself_val(pTHX_ SV *sv, char *arg0)
3713 char buf[MAXPATHLEN];
3714 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3716 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3717 includes a spurious NUL which will cause $^X to fail in system
3718 or backticks (this will prevent extensions from being built and
3719 many tests from working). readlink is not meant to add a NUL.
3720 Normal readlink works fine.
3722 if (len > 0 && buf[len-1] == '\0') {
3726 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3727 returning the text "unknown" from the readlink rather than the path
3728 to the executable (or returning an error from the readlink). Any valid
3729 path has a '/' in it somewhere, so use that to validate the result.
3730 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3732 if (len > 0 && memchr(buf, '/', len)) {
3733 sv_setpvn(sv,buf,len);
3739 #endif /* HAS_PROCSELFEXE */
3742 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3748 PL_toptarget = NEWSV(0,0);
3749 sv_upgrade(PL_toptarget, SVt_PVFM);
3750 sv_setpvn(PL_toptarget, "", 0);
3751 PL_bodytarget = NEWSV(0,0);
3752 sv_upgrade(PL_bodytarget, SVt_PVFM);
3753 sv_setpvn(PL_bodytarget, "", 0);
3754 PL_formtarget = PL_bodytarget;
3758 init_argv_symbols(argc,argv);
3760 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3761 #ifdef MACOS_TRADITIONAL
3762 /* $0 is not majick on a Mac */
3763 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3765 sv_setpv(GvSV(tmpgv),PL_origfilename);
3766 magicname("0", "0", 1);
3769 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3770 #ifdef HAS_PROCSELFEXE
3771 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3774 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3776 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3780 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3782 GvMULTI_on(PL_envgv);
3783 hv = GvHVn(PL_envgv);
3784 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3786 #ifdef USE_ENVIRON_ARRAY
3787 /* Note that if the supplied env parameter is actually a copy
3788 of the global environ then it may now point to free'd memory
3789 if the environment has been modified since. To avoid this
3790 problem we treat env==NULL as meaning 'use the default'
3795 # ifdef USE_ITHREADS
3796 && PL_curinterp == aTHX
3800 environ[0] = Nullch;
3803 for (; *env; env++) {
3804 if (!(s = strchr(*env,'=')))
3806 #if defined(MSDOS) && !defined(DJGPP)
3811 sv = newSVpv(s+1, 0);
3812 (void)hv_store(hv, *env, s - *env, sv, 0);
3816 #endif /* USE_ENVIRON_ARRAY */
3817 #endif /* !PERL_MICRO */
3820 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3821 SvREADONLY_off(GvSV(tmpgv));
3822 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3823 SvREADONLY_on(GvSV(tmpgv));
3825 #ifdef THREADS_HAVE_PIDS
3826 PL_ppid = (IV)getppid();
3829 /* touch @F array to prevent spurious warnings 20020415 MJD */
3831 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3833 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3834 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3835 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3839 S_init_perllib(pTHX)
3844 s = PerlEnv_getenv("PERL5LIB");
3846 incpush(s, TRUE, TRUE, TRUE);
3848 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE);
3850 /* Treat PERL5?LIB as a possible search list logical name -- the
3851 * "natural" VMS idiom for a Unix path string. We allow each
3852 * element to be a set of |-separated directories for compatibility.
3856 if (my_trnlnm("PERL5LIB",buf,0))
3857 do { incpush(buf,TRUE,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3859 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE);
3863 /* Use the ~-expanded versions of APPLLIB (undocumented),
3864 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3867 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE);
3871 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE);
3873 #ifdef MACOS_TRADITIONAL
3876 SV * privdir = NEWSV(55, 0);
3877 char * macperl = PerlEnv_getenv("MACPERL");
3882 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3883 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3884 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3885 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3886 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3887 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3889 SvREFCNT_dec(privdir);
3892 incpush(":", FALSE, FALSE, TRUE);
3895 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3898 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE);
3900 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE);
3904 /* sitearch is always relative to sitelib on Windows for
3905 * DLL-based path intuition to work correctly */
3906 # if !defined(WIN32)
3907 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE);
3913 /* this picks up sitearch as well */
3914 incpush(SITELIB_EXP, TRUE, FALSE, TRUE);
3916 incpush(SITELIB_EXP, FALSE, FALSE, TRUE);
3920 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3921 incpush(SITELIB_STEM, FALSE, TRUE, TRUE);
3924 #ifdef PERL_VENDORARCH_EXP
3925 /* vendorarch is always relative to vendorlib on Windows for
3926 * DLL-based path intuition to work correctly */
3927 # if !defined(WIN32)
3928 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE);
3932 #ifdef PERL_VENDORLIB_EXP
3934 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE); /* this picks up vendorarch as well */
3936 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE);
3940 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3941 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE);
3944 #ifdef PERL_OTHERLIBDIRS
3945 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE);
3949 incpush(".", FALSE, FALSE, TRUE);
3950 #endif /* MACOS_TRADITIONAL */
3953 #if defined(DOSISH) || defined(EPOC)
3954 # define PERLLIB_SEP ';'
3957 # define PERLLIB_SEP '|'
3959 # if defined(MACOS_TRADITIONAL)
3960 # define PERLLIB_SEP ','
3962 # define PERLLIB_SEP ':'
3966 #ifndef PERLLIB_MANGLE
3967 # define PERLLIB_MANGLE(s,n) (s)
3971 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers, int usesep)
3973 SV *subdir = Nullsv;
3978 if (addsubdirs || addoldvers) {
3979 subdir = sv_newmortal();
3982 /* Break at all separators */
3984 SV *libdir = NEWSV(55,0);
3987 /* skip any consecutive separators */
3989 while ( *p == PERLLIB_SEP ) {
3990 /* Uncomment the next line for PATH semantics */
3991 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3996 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3997 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
4002 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
4003 p = Nullch; /* break out */
4005 #ifdef MACOS_TRADITIONAL
4006 if (!strchr(SvPVX(libdir), ':')) {
4009 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
4011 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
4012 sv_catpv(libdir, ":");
4016 * BEFORE pushing libdir onto @INC we may first push version- and
4017 * archname-specific sub-directories.
4019 if (addsubdirs || addoldvers) {
4020 #ifdef PERL_INC_VERSION_LIST
4021 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4022 const char *incverlist[] = { PERL_INC_VERSION_LIST };
4023 const char **incver;
4030 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
4032 while (unix[len-1] == '/') len--; /* Cosmetic */
4033 sv_usepvn(libdir,unix,len);
4036 PerlIO_printf(Perl_error_log,
4037 "Failed to unixify @INC element \"%s\"\n",
4041 #ifdef MACOS_TRADITIONAL
4042 #define PERL_AV_SUFFIX_FMT ""
4043 #define PERL_ARCH_FMT "%s:"
4044 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
4046 #define PERL_AV_SUFFIX_FMT "/"
4047 #define PERL_ARCH_FMT "/%s"
4048 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
4050 /* .../version/archname if -d .../version/archname */
4051 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
4053 (int)PERL_REVISION, (int)PERL_VERSION,
4054 (int)PERL_SUBVERSION, ARCHNAME);
4055 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4056 S_ISDIR(tmpstatbuf.st_mode))
4057 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4059 /* .../version if -d .../version */
4060 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
4061 (int)PERL_REVISION, (int)PERL_VERSION,
4062 (int)PERL_SUBVERSION);
4063 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4064 S_ISDIR(tmpstatbuf.st_mode))
4065 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4067 /* .../archname if -d .../archname */
4068 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
4069 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4070 S_ISDIR(tmpstatbuf.st_mode))
4071 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4074 #ifdef PERL_INC_VERSION_LIST
4076 for (incver = incverlist; *incver; incver++) {
4077 /* .../xxx if -d .../xxx */
4078 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
4079 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4080 S_ISDIR(tmpstatbuf.st_mode))
4081 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4087 /* finally push this lib directory on the end of @INC */
4088 av_push(GvAVn(PL_incgv), libdir);
4092 #ifdef USE_5005THREADS
4093 STATIC struct perl_thread *
4094 S_init_main_thread(pTHX)
4096 #if !defined(PERL_IMPLICIT_CONTEXT)
4097 struct perl_thread *thr;
4101 Newz(53, thr, 1, struct perl_thread);
4102 PL_curcop = &PL_compiling;
4103 thr->interp = PERL_GET_INTERP;
4104 thr->cvcache = newHV();
4105 thr->threadsv = newAV();
4106 /* thr->threadsvp is set when find_threadsv is called */
4107 thr->specific = newAV();
4108 thr->flags = THRf_R_JOINABLE;
4109 MUTEX_INIT(&thr->mutex);
4110 /* Handcraft thrsv similarly to mess_sv */
4111 New(53, PL_thrsv, 1, SV);
4112 Newz(53, xpv, 1, XPV);
4113 SvFLAGS(PL_thrsv) = SVt_PV;
4114 SvANY(PL_thrsv) = (void*)xpv;
4115 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
4116 SvPVX(PL_thrsv) = (char*)thr;
4117 SvCUR_set(PL_thrsv, sizeof(thr));
4118 SvLEN_set(PL_thrsv, sizeof(thr));
4119 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
4120 thr->oursv = PL_thrsv;
4121 PL_chopset = " \n-";
4124 MUTEX_LOCK(&PL_threads_mutex);
4130 MUTEX_UNLOCK(&PL_threads_mutex);
4132 #ifdef HAVE_THREAD_INTERN
4133 Perl_init_thread_intern(thr);
4136 #ifdef SET_THREAD_SELF
4137 SET_THREAD_SELF(thr);
4139 thr->self = pthread_self();
4140 #endif /* SET_THREAD_SELF */
4144 * These must come after the thread self setting
4145 * because sv_setpvn does SvTAINT and the taint
4146 * fields thread selfness being set.
4148 PL_toptarget = NEWSV(0,0);
4149 sv_upgrade(PL_toptarget, SVt_PVFM);
4150 sv_setpvn(PL_toptarget, "", 0);
4151 PL_bodytarget = NEWSV(0,0);
4152 sv_upgrade(PL_bodytarget, SVt_PVFM);
4153 sv_setpvn(PL_bodytarget, "", 0);
4154 PL_formtarget = PL_bodytarget;
4155 thr->errsv = newSVpvn("", 0);
4156 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
4159 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
4160 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
4161 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
4162 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
4163 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
4164 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
4166 PL_reginterp_cnt = 0;
4170 #endif /* USE_5005THREADS */
4173 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4176 line_t oldline = CopLINE(PL_curcop);
4182 while (AvFILL(paramList) >= 0) {
4183 cv = (CV*)av_shift(paramList);
4185 if (paramList == PL_beginav) {
4186 /* save PL_beginav for compiler */
4187 if (! PL_beginav_save)
4188 PL_beginav_save = newAV();
4189 av_push(PL_beginav_save, (SV*)cv);
4191 else if (paramList == PL_checkav) {
4192 /* save PL_checkav for compiler */
4193 if (! PL_checkav_save)
4194 PL_checkav_save = newAV();
4195 av_push(PL_checkav_save, (SV*)cv);
4200 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4201 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
4207 #ifndef PERL_FLEXIBLE_EXCEPTIONS
4211 (void)SvPV(atsv, len);
4213 PL_curcop = &PL_compiling;
4214 CopLINE_set(PL_curcop, oldline);
4215 if (paramList == PL_beginav)
4216 sv_catpv(atsv, "BEGIN failed--compilation aborted");
4218 Perl_sv_catpvf(aTHX_ atsv,
4219 "%s failed--call queue aborted",
4220 paramList == PL_checkav ? "CHECK"
4221 : paramList == PL_initav ? "INIT"
4223 while (PL_scopestack_ix > oldscope)
4226 Perl_croak(aTHX_ "%"SVf"", atsv);
4233 /* my_exit() was called */
4234 while (PL_scopestack_ix > oldscope)
4237 PL_curstash = PL_defstash;
4238 PL_curcop = &PL_compiling;
4239 CopLINE_set(PL_curcop, oldline);
4241 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4242 if (paramList == PL_beginav)
4243 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4245 Perl_croak(aTHX_ "%s failed--call queue aborted",
4246 paramList == PL_checkav ? "CHECK"
4247 : paramList == PL_initav ? "INIT"
4254 PL_curcop = &PL_compiling;
4255 CopLINE_set(PL_curcop, oldline);
4258 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4266 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4268 S_vcall_list_body(pTHX_ va_list args)
4270 CV *cv = va_arg(args, CV*);
4271 return call_list_body(cv);
4276 S_call_list_body(pTHX_ CV *cv)
4278 PUSHMARK(PL_stack_sp);
4279 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4284 Perl_my_exit(pTHX_ U32 status)
4286 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4287 thr, (unsigned long) status));
4296 STATUS_NATIVE_SET(status);
4303 Perl_my_failure_exit(pTHX)
4306 if (vaxc$errno & 1) {
4307 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4308 STATUS_NATIVE_SET(44);
4311 if (!vaxc$errno && errno) /* unlikely */
4312 STATUS_NATIVE_SET(44);
4314 STATUS_NATIVE_SET(vaxc$errno);
4319 STATUS_POSIX_SET(errno);
4321 exitstatus = STATUS_POSIX >> 8;
4322 if (exitstatus & 255)
4323 STATUS_POSIX_SET(exitstatus);
4325 STATUS_POSIX_SET(255);
4332 S_my_exit_jump(pTHX)
4334 register PERL_CONTEXT *cx;
4339 SvREFCNT_dec(PL_e_script);
4340 PL_e_script = Nullsv;
4343 POPSTACK_TO(PL_mainstack);
4344 if (cxstack_ix >= 0) {
4347 POPBLOCK(cx,PL_curpm);
4355 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4358 p = SvPVX(PL_e_script);
4359 nl = strchr(p, '\n');
4360 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4362 filter_del(read_e_script);
4365 sv_catpvn(buf_sv, p, nl-p);
4366 sv_chop(PL_e_script, nl);