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 SvREFCNT(&PL_sv_placeholder) = 0;
813 SvREADONLY_off(&PL_sv_placeholder);
815 Safefree(PL_origfilename);
816 PL_origfilename = Nullch;
817 Safefree(PL_reg_start_tmp);
818 PL_reg_start_tmp = (char**)NULL;
819 PL_reg_start_tmpl = 0;
821 Safefree(PL_reg_curpm);
822 Safefree(PL_reg_poscache);
824 Safefree(PL_op_mask);
825 Safefree(PL_psig_ptr);
826 PL_psig_ptr = (SV**)NULL;
827 Safefree(PL_psig_name);
828 PL_psig_name = (SV**)NULL;
829 Safefree(PL_bitcount);
830 PL_bitcount = Nullch;
831 Safefree(PL_psig_pend);
832 PL_psig_pend = (int*)NULL;
833 PL_formfeed = Nullsv;
838 PL_taint_warn = FALSE;
839 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
842 DEBUG_P(debprofdump());
844 #ifdef USE_REENTRANT_API
845 Perl_reentrant_free(aTHX);
850 /* As the absolutely last thing, free the non-arena SV for mess() */
853 /* it could have accumulated taint magic */
854 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
857 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
858 moremagic = mg->mg_moremagic;
859 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
861 Safefree(mg->mg_ptr);
865 /* we know that type >= SVt_PV */
866 (void)SvOOK_off(PL_mess_sv);
867 Safefree(SvPVX(PL_mess_sv));
868 Safefree(SvANY(PL_mess_sv));
869 Safefree(PL_mess_sv);
872 return STATUS_NATIVE_EXPORT;
876 =for apidoc perl_free
878 Releases a Perl interpreter. See L<perlembed>.
886 #if defined(WIN32) || defined(NETWARE)
887 # if defined(PERL_IMPLICIT_SYS)
889 void *host = nw_internal_host;
891 void *host = w32_internal_host;
895 nw_delete_internal_host(host);
897 win32_delete_internal_host(host);
908 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
910 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
911 PL_exitlist[PL_exitlistlen].fn = fn;
912 PL_exitlist[PL_exitlistlen].ptr = ptr;
917 =for apidoc perl_parse
919 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
925 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
930 #ifdef USE_5005THREADS
934 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
937 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
938 setuid perl scripts securely.\n");
942 #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
943 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
944 * This MUST be done before any hash stores or fetches take place.
945 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
946 * yourself, it is your responsibility to provide a good random seed!
947 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
948 if (!PL_rehash_seed_set)
949 PL_rehash_seed = get_hash_seed();
951 char *s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
957 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n",
961 #endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
967 /* Set PL_origalen be the sum of the contiguous argv[]
968 * elements plus the size of the env in case that it is
969 * contiguous with the argv[]. This is used in mg.c:mg_set()
970 * as the maximum modifiable length of $0. In the worst case
971 * the area we are able to modify is limited to the size of
972 * the original argv[0]. (See below for 'contiguous', though.)
977 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
978 /* Do the mask check only if the args seem like aligned. */
980 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
982 /* See if all the arguments are contiguous in memory. Note
983 * that 'contiguous' is a loose term because some platforms
984 * align the argv[] and the envp[]. If the arguments look
985 * like non-aligned, assume that they are 'strictly' or
986 * 'traditionally' contiguous. If the arguments look like
987 * aligned, we just check that they are within aligned
988 * PTRSIZE bytes. As long as no system has something bizarre
989 * like the argv[] interleaved with some other data, we are
990 * fine. (Did I just evoke Murphy's Law?) --jhi */
991 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
993 for (i = 1; i < PL_origargc; i++) {
994 if ((PL_origargv[i] == s + 1
996 || PL_origargv[i] == s + 2
1001 (PL_origargv[i] > s &&
1003 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1013 /* Can we grab env area too to be used as the area for $0? */
1014 if (PL_origenviron) {
1015 if ((PL_origenviron[0] == s + 1
1017 || (PL_origenviron[0] == s + 9 && (s += 8))
1022 (PL_origenviron[0] > s &&
1023 PL_origenviron[0] <=
1024 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1028 s = PL_origenviron[0];
1031 my_setenv("NoNe SuCh", Nullch);
1032 /* Force copy of environment. */
1033 for (i = 1; PL_origenviron[i]; i++) {
1034 if (PL_origenviron[i] == s + 1
1037 (PL_origenviron[i] > s &&
1038 PL_origenviron[i] <=
1039 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1042 s = PL_origenviron[i];
1050 PL_origalen = s - PL_origargv[0];
1055 /* Come here if running an undumped a.out. */
1057 PL_origfilename = savepv(argv[0]);
1058 PL_do_undump = FALSE;
1059 cxstack_ix = -1; /* start label stack again */
1061 init_postdump_symbols(argc,argv,env);
1066 op_free(PL_main_root);
1067 PL_main_root = Nullop;
1069 PL_main_start = Nullop;
1070 SvREFCNT_dec(PL_main_cv);
1071 PL_main_cv = Nullcv;
1074 oldscope = PL_scopestack_ix;
1075 PL_dowarn = G_WARN_OFF;
1077 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1078 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1084 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1085 parse_body(env,xsinit);
1088 call_list(oldscope, PL_checkav);
1095 /* my_exit() was called */
1096 while (PL_scopestack_ix > oldscope)
1099 PL_curstash = PL_defstash;
1101 call_list(oldscope, PL_checkav);
1102 ret = STATUS_NATIVE_EXPORT;
1105 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1113 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1115 S_vparse_body(pTHX_ va_list args)
1117 char **env = va_arg(args, char**);
1118 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1120 return parse_body(env, xsinit);
1125 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1127 int argc = PL_origargc;
1128 char **argv = PL_origargv;
1129 char *scriptname = NULL;
1131 VOL bool dosearch = FALSE;
1132 char *validarg = "";
1135 char *cddir = Nullch;
1137 sv_setpvn(PL_linestr,"",0);
1138 sv = newSVpvn("",0); /* first used for -I flags */
1142 for (argc--,argv++; argc > 0; argc--,argv++) {
1143 if (argv[0][0] != '-' || !argv[0][1])
1147 validarg = " PHOOEY ";
1155 #ifndef PERL_STRICT_CR
1180 if ((s = moreswitches(s)))
1185 CHECK_MALLOC_TOO_LATE_FOR('t');
1186 if( !PL_tainting ) {
1187 PL_taint_warn = TRUE;
1193 CHECK_MALLOC_TOO_LATE_FOR('T');
1195 PL_taint_warn = FALSE;
1200 #ifdef MACOS_TRADITIONAL
1201 /* ignore -e for Dev:Pseudo argument */
1202 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1205 if (PL_euid != PL_uid || PL_egid != PL_gid)
1206 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1208 PL_e_script = newSVpvn("",0);
1209 filter_add(read_e_script, NULL);
1212 sv_catpv(PL_e_script, s);
1214 sv_catpv(PL_e_script, argv[1]);
1218 Perl_croak(aTHX_ "No code specified for -e");
1219 sv_catpv(PL_e_script, "\n");
1222 case 'I': /* -I handled both here and in moreswitches() */
1224 if (!*++s && (s=argv[1]) != Nullch) {
1229 STRLEN len = strlen(s);
1230 p = savepvn(s, len);
1231 incpush(p, TRUE, TRUE, FALSE);
1232 sv_catpvn(sv, "-I", 2);
1233 sv_catpvn(sv, p, len);
1234 sv_catpvn(sv, " ", 1);
1238 Perl_croak(aTHX_ "No directory specified for -I");
1242 PL_preprocess = TRUE;
1252 PL_preambleav = newAV();
1253 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1255 PL_Sv = newSVpv("print myconfig();",0);
1257 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1259 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1261 sv_catpv(PL_Sv,"\" Compile-time options:");
1263 sv_catpv(PL_Sv," DEBUGGING");
1265 # ifdef MULTIPLICITY
1266 sv_catpv(PL_Sv," MULTIPLICITY");
1268 # ifdef USE_5005THREADS
1269 sv_catpv(PL_Sv," USE_5005THREADS");
1271 # ifdef USE_ITHREADS
1272 sv_catpv(PL_Sv," USE_ITHREADS");
1274 # ifdef USE_64_BIT_INT
1275 sv_catpv(PL_Sv," USE_64_BIT_INT");
1277 # ifdef USE_64_BIT_ALL
1278 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1280 # ifdef USE_LONG_DOUBLE
1281 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1283 # ifdef USE_LARGE_FILES
1284 sv_catpv(PL_Sv," USE_LARGE_FILES");
1287 sv_catpv(PL_Sv," USE_SOCKS");
1289 # ifdef PERL_IMPLICIT_CONTEXT
1290 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1292 # ifdef PERL_IMPLICIT_SYS
1293 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1295 sv_catpv(PL_Sv,"\\n\",");
1297 #if defined(LOCAL_PATCH_COUNT)
1298 if (LOCAL_PATCH_COUNT > 0) {
1300 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1301 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1302 if (PL_localpatches[i])
1303 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1307 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1310 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1312 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1315 sv_catpv(PL_Sv, "; \
1317 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1320 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1323 print \" \\%ENV:\\n @env\\n\" if @env; \
1324 print \" \\@INC:\\n @INC\\n\";");
1327 PL_Sv = newSVpv("config_vars(qw(",0);
1328 sv_catpv(PL_Sv, ++s);
1329 sv_catpv(PL_Sv, "))");
1332 av_push(PL_preambleav, PL_Sv);
1333 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1336 PL_doextract = TRUE;
1344 if (!*++s || isSPACE(*s)) {
1348 /* catch use of gnu style long options */
1349 if (strEQ(s, "version")) {
1353 if (strEQ(s, "help")) {
1360 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1364 sv_setsv(get_sv("/", TRUE), PL_rs);
1367 #ifndef SECURE_INTERNAL_GETENV
1370 (s = PerlEnv_getenv("PERL5OPT")))
1375 if (*s == '-' && *(s+1) == 'T') {
1376 CHECK_MALLOC_TOO_LATE_FOR('T');
1378 PL_taint_warn = FALSE;
1381 char *popt_copy = Nullch;
1394 if (!strchr("DIMUdmtwA", *s))
1395 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1399 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1400 s = popt_copy + (s - popt);
1401 d = popt_copy + (d - popt);
1408 if( !PL_tainting ) {
1409 PL_taint_warn = TRUE;
1419 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1420 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1424 scriptname = argv[0];
1427 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1429 else if (scriptname == Nullch) {
1431 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1439 open_script(scriptname,dosearch,sv,&fdscript);
1441 validate_suid(validarg, scriptname,fdscript);
1444 #if defined(SIGCHLD) || defined(SIGCLD)
1447 # define SIGCHLD SIGCLD
1449 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1450 if (sigstate == SIG_IGN) {
1451 if (ckWARN(WARN_SIGNAL))
1452 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1453 "Can't ignore signal CHLD, forcing to default");
1454 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1460 #ifdef MACOS_TRADITIONAL
1461 if (PL_doextract || gMacPerl_AlwaysExtract) {
1466 if (cddir && PerlDir_chdir(cddir) < 0)
1467 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1471 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1472 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1473 CvUNIQUE_on(PL_compcv);
1475 CvPADLIST(PL_compcv) = pad_new(0);
1476 #ifdef USE_5005THREADS
1477 CvOWNER(PL_compcv) = 0;
1478 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1479 MUTEX_INIT(CvMUTEXP(PL_compcv));
1480 #endif /* USE_5005THREADS */
1483 boot_core_UNIVERSAL();
1484 boot_core_xsutils();
1487 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1489 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1495 # ifdef HAS_SOCKS5_INIT
1496 socks5_init(argv[0]);
1502 init_predump_symbols();
1503 /* init_postdump_symbols not currently designed to be called */
1504 /* more than once (ENV isn't cleared first, for example) */
1505 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1507 init_postdump_symbols(argc,argv,env);
1509 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1510 * PL_utf8locale is conditionally turned on by
1511 * locale.c:Perl_init_i18nl10n() if the environment
1512 * look like the user wants to use UTF-8. */
1514 /* Requires init_predump_symbols(). */
1515 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
1520 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1521 * and the default open disciplines. */
1522 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1523 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1525 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1526 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1527 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1529 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1530 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1531 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1533 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1534 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1535 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1536 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1537 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1540 sv_setpvn(sv, ":utf8\0:utf8", 11);
1542 sv_setpvn(sv, ":utf8\0", 6);
1545 sv_setpvn(sv, "\0:utf8", 6);
1551 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1552 if (strEQ(s, "unsafe"))
1553 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1554 else if (strEQ(s, "safe"))
1555 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1557 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1562 /* now parse the script */
1564 SETERRNO(0,SS_NORMAL);
1566 #ifdef MACOS_TRADITIONAL
1567 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1569 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1571 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1572 MacPerl_MPWFileName(PL_origfilename));
1576 if (yyparse() || PL_error_count) {
1578 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1580 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1585 CopLINE_set(PL_curcop, 0);
1586 PL_curstash = PL_defstash;
1587 PL_preprocess = FALSE;
1589 SvREFCNT_dec(PL_e_script);
1590 PL_e_script = Nullsv;
1597 SAVECOPFILE(PL_curcop);
1598 SAVECOPLINE(PL_curcop);
1599 gv_check(PL_defstash);
1606 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1607 dump_mstats("after compilation:");
1616 =for apidoc perl_run
1618 Tells a Perl interpreter to run. See L<perlembed>.
1629 #ifdef USE_5005THREADS
1633 oldscope = PL_scopestack_ix;
1638 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1640 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1646 cxstack_ix = -1; /* start context stack again */
1648 case 0: /* normal completion */
1649 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1654 case 2: /* my_exit() */
1655 while (PL_scopestack_ix > oldscope)
1658 PL_curstash = PL_defstash;
1659 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1660 PL_endav && !PL_minus_c)
1661 call_list(oldscope, PL_endav);
1663 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1664 dump_mstats("after execution: ");
1666 ret = STATUS_NATIVE_EXPORT;
1670 POPSTACK_TO(PL_mainstack);
1673 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1683 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1685 S_vrun_body(pTHX_ va_list args)
1687 I32 oldscope = va_arg(args, I32);
1689 return run_body(oldscope);
1695 S_run_body(pTHX_ I32 oldscope)
1697 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1698 PL_sawampersand ? "Enabling" : "Omitting"));
1700 if (!PL_restartop) {
1701 DEBUG_x(dump_all());
1702 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1703 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1707 #ifdef MACOS_TRADITIONAL
1708 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1709 (gMacPerl_ErrorFormat ? "# " : ""),
1710 MacPerl_MPWFileName(PL_origfilename));
1712 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1716 if (PERLDB_SINGLE && PL_DBsingle)
1717 sv_setiv(PL_DBsingle, 1);
1719 call_list(oldscope, PL_initav);
1725 PL_op = PL_restartop;
1729 else if (PL_main_start) {
1730 CvDEPTH(PL_main_cv) = 1;
1731 PL_op = PL_main_start;
1741 =head1 SV Manipulation Functions
1743 =for apidoc p||get_sv
1745 Returns the SV of the specified Perl scalar. If C<create> is set and the
1746 Perl variable does not exist then it will be created. If C<create> is not
1747 set and the variable does not exist then NULL is returned.
1753 Perl_get_sv(pTHX_ const char *name, I32 create)
1756 #ifdef USE_5005THREADS
1757 if (name[1] == '\0' && !isALPHA(name[0])) {
1758 PADOFFSET tmp = find_threadsv(name);
1759 if (tmp != NOT_IN_PAD)
1760 return THREADSV(tmp);
1762 #endif /* USE_5005THREADS */
1763 gv = gv_fetchpv(name, create, SVt_PV);
1770 =head1 Array Manipulation Functions
1772 =for apidoc p||get_av
1774 Returns the AV of the specified Perl array. If C<create> is set and the
1775 Perl variable does not exist then it will be created. If C<create> is not
1776 set and the variable does not exist then NULL is returned.
1782 Perl_get_av(pTHX_ const char *name, I32 create)
1784 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1793 =head1 Hash Manipulation Functions
1795 =for apidoc p||get_hv
1797 Returns the HV of the specified Perl hash. If C<create> is set and the
1798 Perl variable does not exist then it will be created. If C<create> is not
1799 set and the variable does not exist then NULL is returned.
1805 Perl_get_hv(pTHX_ const char *name, I32 create)
1807 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1816 =head1 CV Manipulation Functions
1818 =for apidoc p||get_cv
1820 Returns the CV of the specified Perl subroutine. If C<create> is set and
1821 the Perl subroutine does not exist then it will be declared (which has the
1822 same effect as saying C<sub name;>). If C<create> is not set and the
1823 subroutine does not exist then NULL is returned.
1829 Perl_get_cv(pTHX_ const char *name, I32 create)
1831 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1832 /* XXX unsafe for threads if eval_owner isn't held */
1833 /* XXX this is probably not what they think they're getting.
1834 * It has the same effect as "sub name;", i.e. just a forward
1836 if (create && !GvCVu(gv))
1837 return newSUB(start_subparse(FALSE, 0),
1838 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1846 /* Be sure to refetch the stack pointer after calling these routines. */
1850 =head1 Callback Functions
1852 =for apidoc p||call_argv
1854 Performs a callback to the specified Perl sub. See L<perlcall>.
1860 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1862 /* See G_* flags in cop.h */
1863 /* null terminated arg list */
1870 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1875 return call_pv(sub_name, flags);
1879 =for apidoc p||call_pv
1881 Performs a callback to the specified Perl sub. See L<perlcall>.
1887 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1888 /* name of the subroutine */
1889 /* See G_* flags in cop.h */
1891 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1895 =for apidoc p||call_method
1897 Performs a callback to the specified Perl method. The blessed object must
1898 be on the stack. See L<perlcall>.
1904 Perl_call_method(pTHX_ const char *methname, I32 flags)
1905 /* name of the subroutine */
1906 /* See G_* flags in cop.h */
1908 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1911 /* May be called with any of a CV, a GV, or an SV containing the name. */
1913 =for apidoc p||call_sv
1915 Performs a callback to the Perl sub whose name is in the SV. See
1922 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1923 /* See G_* flags in cop.h */
1926 LOGOP myop; /* fake syntax tree node */
1929 volatile I32 retval = 0;
1931 bool oldcatch = CATCH_GET;
1936 if (flags & G_DISCARD) {
1941 Zero(&myop, 1, LOGOP);
1942 myop.op_next = Nullop;
1943 if (!(flags & G_NOARGS))
1944 myop.op_flags |= OPf_STACKED;
1945 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1946 (flags & G_ARRAY) ? OPf_WANT_LIST :
1951 EXTEND(PL_stack_sp, 1);
1952 *++PL_stack_sp = sv;
1954 oldscope = PL_scopestack_ix;
1956 if (PERLDB_SUB && PL_curstash != PL_debstash
1957 /* Handle first BEGIN of -d. */
1958 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1959 /* Try harder, since this may have been a sighandler, thus
1960 * curstash may be meaningless. */
1961 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1962 && !(flags & G_NODEBUG))
1963 PL_op->op_private |= OPpENTERSUB_DB;
1965 if (flags & G_METHOD) {
1966 Zero(&method_op, 1, UNOP);
1967 method_op.op_next = PL_op;
1968 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1969 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1970 PL_op = (OP*)&method_op;
1973 if (!(flags & G_EVAL)) {
1975 call_body((OP*)&myop, FALSE);
1976 retval = PL_stack_sp - (PL_stack_base + oldmark);
1977 CATCH_SET(oldcatch);
1980 myop.op_other = (OP*)&myop;
1982 /* we're trying to emulate pp_entertry() here */
1984 register PERL_CONTEXT *cx;
1985 I32 gimme = GIMME_V;
1990 push_return(Nullop);
1991 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1993 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1995 PL_in_eval = EVAL_INEVAL;
1996 if (flags & G_KEEPERR)
1997 PL_in_eval |= EVAL_KEEPERR;
2003 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2005 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2012 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2014 call_body((OP*)&myop, FALSE);
2016 retval = PL_stack_sp - (PL_stack_base + oldmark);
2017 if (!(flags & G_KEEPERR))
2024 /* my_exit() was called */
2025 PL_curstash = PL_defstash;
2028 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2029 Perl_croak(aTHX_ "Callback called exit");
2034 PL_op = PL_restartop;
2038 PL_stack_sp = PL_stack_base + oldmark;
2039 if (flags & G_ARRAY)
2043 *++PL_stack_sp = &PL_sv_undef;
2048 if (PL_scopestack_ix > oldscope) {
2052 register PERL_CONTEXT *cx;
2064 if (flags & G_DISCARD) {
2065 PL_stack_sp = PL_stack_base + oldmark;
2074 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2076 S_vcall_body(pTHX_ va_list args)
2078 OP *myop = va_arg(args, OP*);
2079 int is_eval = va_arg(args, int);
2081 call_body(myop, is_eval);
2087 S_call_body(pTHX_ OP *myop, int is_eval)
2089 if (PL_op == myop) {
2091 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2093 PL_op = Perl_pp_entersub(aTHX); /* this does */
2099 /* Eval a string. The G_EVAL flag is always assumed. */
2102 =for apidoc p||eval_sv
2104 Tells Perl to C<eval> the string in the SV.
2110 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2112 /* See G_* flags in cop.h */
2115 UNOP myop; /* fake syntax tree node */
2116 volatile I32 oldmark = SP - PL_stack_base;
2117 volatile I32 retval = 0;
2123 if (flags & G_DISCARD) {
2130 Zero(PL_op, 1, UNOP);
2131 EXTEND(PL_stack_sp, 1);
2132 *++PL_stack_sp = sv;
2133 oldscope = PL_scopestack_ix;
2135 if (!(flags & G_NOARGS))
2136 myop.op_flags = OPf_STACKED;
2137 myop.op_next = Nullop;
2138 myop.op_type = OP_ENTEREVAL;
2139 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2140 (flags & G_ARRAY) ? OPf_WANT_LIST :
2142 if (flags & G_KEEPERR)
2143 myop.op_flags |= OPf_SPECIAL;
2145 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2147 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2154 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2156 call_body((OP*)&myop,TRUE);
2158 retval = PL_stack_sp - (PL_stack_base + oldmark);
2159 if (!(flags & G_KEEPERR))
2166 /* my_exit() was called */
2167 PL_curstash = PL_defstash;
2170 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2171 Perl_croak(aTHX_ "Callback called exit");
2176 PL_op = PL_restartop;
2180 PL_stack_sp = PL_stack_base + oldmark;
2181 if (flags & G_ARRAY)
2185 *++PL_stack_sp = &PL_sv_undef;
2191 if (flags & G_DISCARD) {
2192 PL_stack_sp = PL_stack_base + oldmark;
2202 =for apidoc p||eval_pv
2204 Tells Perl to C<eval> the given string and return an SV* result.
2210 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2213 SV* sv = newSVpv(p, 0);
2215 eval_sv(sv, G_SCALAR);
2222 if (croak_on_error && SvTRUE(ERRSV)) {
2224 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2230 /* Require a module. */
2233 =head1 Embedding Functions
2235 =for apidoc p||require_pv
2237 Tells Perl to C<require> the file named by the string argument. It is
2238 analogous to the Perl code C<eval "require '$file'">. It's even
2239 implemented that way; consider using load_module instead.
2244 Perl_require_pv(pTHX_ const char *pv)
2248 PUSHSTACKi(PERLSI_REQUIRE);
2250 sv = sv_newmortal();
2251 sv_setpv(sv, "require '");
2254 eval_sv(sv, G_DISCARD);
2260 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2264 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2265 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2269 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2271 /* This message really ought to be max 23 lines.
2272 * Removed -h because the user already knows that option. Others? */
2274 static char *usage_msg[] = {
2275 "-0[octal] specify record separator (\\0, if no argument)",
2276 "-a autosplit mode with -n or -p (splits $_ into @F)",
2277 "-C[number/list] enables the listed Unicode features",
2278 "-c check syntax only (runs BEGIN and CHECK blocks)",
2279 "-d[:debugger] run program under debugger",
2280 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2281 "-e program one line of program (several -e's allowed, omit programfile)",
2282 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2283 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2284 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2285 "-l[octal] enable line ending processing, specifies line terminator",
2286 "-[mM][-]module execute `use/no module...' before executing program",
2287 "-n assume 'while (<>) { ... }' loop around program",
2288 "-p assume loop like -n but print line also, like sed",
2289 "-P run program through C preprocessor before compilation",
2290 "-s enable rudimentary parsing for switches after programfile",
2291 "-S look for programfile using PATH environment variable",
2292 "-t enable tainting warnings",
2293 "-T enable tainting checks",
2294 "-u dump core after parsing program",
2295 "-U allow unsafe operations",
2296 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2297 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2298 "-w enable many useful warnings (RECOMMENDED)",
2299 "-W enable all warnings",
2300 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2301 "-X disable all warnings",
2305 char **p = usage_msg;
2307 PerlIO_printf(PerlIO_stdout(),
2308 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2311 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2314 /* convert a string of -D options (or digits) into an int.
2315 * sets *s to point to the char after the options */
2319 Perl_get_debug_opts(pTHX_ char **s)
2323 /* if adding extra options, remember to update DEBUG_MASK */
2324 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
2326 for (; isALNUM(**s); (*s)++) {
2327 char *d = strchr(debopts,**s);
2329 i |= 1 << (d - debopts);
2330 else if (ckWARN_d(WARN_DEBUGGING))
2331 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2332 "invalid option -D%c\n", **s);
2337 for (; isALNUM(**s); (*s)++) ;
2340 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2341 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2342 "-Dp not implemented on this platform\n");
2348 /* This routine handles any switches that can be given during run */
2351 Perl_moreswitches(pTHX_ char *s)
2361 SvREFCNT_dec(PL_rs);
2362 if (s[1] == 'x' && s[2]) {
2366 for (s += 2, e = s; *e; e++);
2368 flags = PERL_SCAN_SILENT_ILLDIGIT;
2369 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2370 if (s + numlen < e) {
2371 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2375 PL_rs = newSVpvn("", 0);
2376 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
2377 tmps = (U8*)SvPVX(PL_rs);
2378 uvchr_to_utf8(tmps, rschar);
2379 SvCUR_set(PL_rs, UNISKIP(rschar));
2384 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2385 if (rschar & ~((U8)~0))
2386 PL_rs = &PL_sv_undef;
2387 else if (!rschar && numlen >= 2)
2388 PL_rs = newSVpvn("", 0);
2390 char ch = (char)rschar;
2391 PL_rs = newSVpvn(&ch, 1);
2398 PL_unicode = parse_unicode_opts(&s);
2403 while (*s && !isSPACE(*s)) ++s;
2405 PL_splitstr = savepv(PL_splitstr);
2418 /* The following permits -d:Mod to accepts arguments following an =
2419 in the fashion that -MSome::Mod does. */
2420 if (*s == ':' || *s == '=') {
2423 sv = newSVpv("use Devel::", 0);
2425 /* We now allow -d:Module=Foo,Bar */
2426 while(isALNUM(*s) || *s==':') ++s;
2428 sv_catpv(sv, start);
2430 sv_catpvn(sv, start, s-start);
2431 sv_catpv(sv, " split(/,/,q{");
2436 my_setenv("PERL5DB", SvPV(sv, PL_na));
2439 PL_perldb = PERLDB_ALL;
2448 PL_debug = get_debug_opts(&s) | DEBUG_TOP_FLAG;
2449 #else /* !DEBUGGING */
2450 if (ckWARN_d(WARN_DEBUGGING))
2451 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2452 "Recompile perl with -DDEBUGGING to use -D switch\n");
2453 for (s++; isALNUM(*s); s++) ;
2459 usage(PL_origargv[0]);
2463 Safefree(PL_inplace);
2464 #if defined(__CYGWIN__) /* do backup extension automagically */
2465 if (*(s+1) == '\0') {
2466 PL_inplace = savepv(".bak");
2469 #endif /* __CYGWIN__ */
2470 PL_inplace = savepv(s+1);
2472 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2475 if (*s == '-') /* Additional switches on #! line. */
2479 case 'I': /* -I handled both here and in parse_body() */
2482 while (*s && isSPACE(*s))
2487 /* ignore trailing spaces (possibly followed by other switches) */
2489 for (e = p; *e && !isSPACE(*e); e++) ;
2493 } while (*p && *p != '-');
2494 e = savepvn(s, e-s);
2495 incpush(e, TRUE, TRUE, FALSE);
2502 Perl_croak(aTHX_ "No directory specified for -I");
2508 SvREFCNT_dec(PL_ors_sv);
2513 PL_ors_sv = newSVpvn("\n",1);
2514 numlen = 3 + (*s == '0');
2515 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2519 if (RsPARA(PL_rs)) {
2520 PL_ors_sv = newSVpvn("\n\n",2);
2523 PL_ors_sv = newSVsv(PL_rs);
2530 PL_preambleav = newAV();
2532 SV *sv = newSVpv("use assertions::activate split(/,/,q", 0);
2533 sv_catpvn(sv, "\0", 1); /* Use NUL as q//-delimiter. */
2535 sv_catpvn(sv, "\0)", 2);
2537 av_push(PL_preambleav, sv);
2540 av_push(PL_preambleav, newSVpvn("use assertions::activate",24));
2543 forbid_setid("-M"); /* XXX ? */
2546 forbid_setid("-m"); /* XXX ? */
2551 /* -M-foo == 'no foo' */
2552 if (*s == '-') { use = "no "; ++s; }
2553 sv = newSVpv(use,0);
2555 /* We allow -M'Module qw(Foo Bar)' */
2556 while(isALNUM(*s) || *s==':') ++s;
2558 sv_catpv(sv, start);
2559 if (*(start-1) == 'm') {
2561 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2562 sv_catpv( sv, " ()");
2566 Perl_croak(aTHX_ "Module name required with -%c option",
2568 sv_catpvn(sv, start, s-start);
2569 sv_catpv(sv, " split(/,/,q");
2570 sv_catpvn(sv, "\0)", 1); /* Use NUL as q//-delimiter. */
2572 sv_catpvn(sv, "\0)", 2);
2576 PL_preambleav = newAV();
2577 av_push(PL_preambleav, sv);
2580 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2592 PL_doswitches = TRUE;
2606 #ifdef MACOS_TRADITIONAL
2607 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2609 PL_do_undump = TRUE;
2618 PerlIO_printf(PerlIO_stdout(),
2619 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2620 PL_patchlevel, ARCHNAME));
2622 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2623 PerlIO_printf(PerlIO_stdout(),
2624 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2625 PerlIO_printf(PerlIO_stdout(),
2626 Perl_form(aTHX_ " built under %s at %s %s\n",
2627 OSNAME, __DATE__, __TIME__));
2628 PerlIO_printf(PerlIO_stdout(),
2629 Perl_form(aTHX_ " OS Specific Release: %s\n",
2633 #if defined(LOCAL_PATCH_COUNT)
2634 if (LOCAL_PATCH_COUNT > 0)
2635 PerlIO_printf(PerlIO_stdout(),
2636 "\n(with %d registered patch%s, "
2637 "see perl -V for more detail)",
2638 (int)LOCAL_PATCH_COUNT,
2639 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2642 PerlIO_printf(PerlIO_stdout(),
2643 "\n\nCopyright 1987-2003, Larry Wall\n");
2644 #ifdef MACOS_TRADITIONAL
2645 PerlIO_printf(PerlIO_stdout(),
2646 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2647 "maintained by Chris Nandor\n");
2650 PerlIO_printf(PerlIO_stdout(),
2651 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2654 PerlIO_printf(PerlIO_stdout(),
2655 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2656 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2659 PerlIO_printf(PerlIO_stdout(),
2660 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2661 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2664 PerlIO_printf(PerlIO_stdout(),
2665 "atariST series port, ++jrb bammi@cadence.com\n");
2668 PerlIO_printf(PerlIO_stdout(),
2669 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2672 PerlIO_printf(PerlIO_stdout(),
2673 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
2676 PerlIO_printf(PerlIO_stdout(),
2677 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2680 PerlIO_printf(PerlIO_stdout(),
2681 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2684 PerlIO_printf(PerlIO_stdout(),
2685 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2688 PerlIO_printf(PerlIO_stdout(),
2689 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2692 PerlIO_printf(PerlIO_stdout(),
2693 "MiNT port by Guido Flohr, 1997-1999\n");
2696 PerlIO_printf(PerlIO_stdout(),
2697 "EPOC port by Olaf Flebbe, 1999-2002\n");
2700 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
2701 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
2704 #ifdef BINARY_BUILD_NOTICE
2705 BINARY_BUILD_NOTICE;
2707 PerlIO_printf(PerlIO_stdout(),
2709 Perl may be copied only under the terms of either the Artistic License or the\n\
2710 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2711 Complete documentation for Perl, including FAQ lists, should be found on\n\
2712 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2713 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2716 if (! (PL_dowarn & G_WARN_ALL_MASK))
2717 PL_dowarn |= G_WARN_ON;
2721 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2722 if (!specialWARN(PL_compiling.cop_warnings))
2723 SvREFCNT_dec(PL_compiling.cop_warnings);
2724 PL_compiling.cop_warnings = pWARN_ALL ;
2728 PL_dowarn = G_WARN_ALL_OFF;
2729 if (!specialWARN(PL_compiling.cop_warnings))
2730 SvREFCNT_dec(PL_compiling.cop_warnings);
2731 PL_compiling.cop_warnings = pWARN_NONE ;
2736 if (s[1] == '-') /* Additional switches on #! line. */
2741 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2747 #ifdef ALTERNATE_SHEBANG
2748 case 'S': /* OS/2 needs -S on "extproc" line. */
2756 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2761 /* compliments of Tom Christiansen */
2763 /* unexec() can be found in the Gnu emacs distribution */
2764 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2767 Perl_my_unexec(pTHX)
2775 prog = newSVpv(BIN_EXP, 0);
2776 sv_catpv(prog, "/perl");
2777 file = newSVpv(PL_origfilename, 0);
2778 sv_catpv(file, ".perldump");
2780 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2781 /* unexec prints msg to stderr in case of failure */
2782 PerlProc_exit(status);
2785 # include <lib$routines.h>
2786 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2788 ABORT(); /* for use with undump */
2793 /* initialize curinterp */
2799 # define PERLVAR(var,type)
2800 # define PERLVARA(var,n,type)
2801 # if defined(PERL_IMPLICIT_CONTEXT)
2802 # if defined(USE_5005THREADS)
2803 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2804 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2805 # else /* !USE_5005THREADS */
2806 # define PERLVARI(var,type,init) aTHX->var = init;
2807 # define PERLVARIC(var,type,init) aTHX->var = init;
2808 # endif /* USE_5005THREADS */
2810 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2811 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2813 # include "intrpvar.h"
2814 # ifndef USE_5005THREADS
2815 # include "thrdvar.h"
2822 # define PERLVAR(var,type)
2823 # define PERLVARA(var,n,type)
2824 # define PERLVARI(var,type,init) PL_##var = init;
2825 # define PERLVARIC(var,type,init) PL_##var = init;
2826 # include "intrpvar.h"
2827 # ifndef USE_5005THREADS
2828 # include "thrdvar.h"
2839 S_init_main_stash(pTHX)
2843 PL_curstash = PL_defstash = newHV();
2844 PL_curstname = newSVpvn("main",4);
2845 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2846 SvREFCNT_dec(GvHV(gv));
2847 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2849 HvNAME(PL_defstash) = savepv("main");
2850 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2851 GvMULTI_on(PL_incgv);
2852 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2853 GvMULTI_on(PL_hintgv);
2854 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2855 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2856 GvMULTI_on(PL_errgv);
2857 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2858 GvMULTI_on(PL_replgv);
2859 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2860 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2861 sv_setpvn(ERRSV, "", 0);
2862 PL_curstash = PL_defstash;
2863 CopSTASH_set(&PL_compiling, PL_defstash);
2864 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2865 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2866 /* We must init $/ before switches are processed. */
2867 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2871 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2875 char *cpp_discard_flag;
2881 PL_origfilename = savepv("-e");
2884 /* if find_script() returns, it returns a malloc()-ed value */
2885 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2887 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2888 char *s = scriptname + 8;
2889 *fdscript = atoi(s);
2893 scriptname = savepv(s + 1);
2894 Safefree(PL_origfilename);
2895 PL_origfilename = scriptname;
2900 CopFILE_free(PL_curcop);
2901 CopFILE_set(PL_curcop, PL_origfilename);
2902 if (strEQ(PL_origfilename,"-"))
2904 if (*fdscript >= 0) {
2905 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2906 # if defined(HAS_FCNTL) && defined(F_SETFD)
2908 /* ensure close-on-exec */
2909 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2912 else if (PL_preprocess) {
2913 char *cpp_cfg = CPPSTDIN;
2914 SV *cpp = newSVpvn("",0);
2915 SV *cmd = NEWSV(0,0);
2917 if (cpp_cfg[0] == 0) /* PERL_MICRO? */
2918 Perl_croak(aTHX_ "Can't run with cpp -P with CPPSTDIN undefined");
2919 if (strEQ(cpp_cfg, "cppstdin"))
2920 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2921 sv_catpv(cpp, cpp_cfg);
2924 sv_catpvn(sv, "-I", 2);
2925 sv_catpv(sv,PRIVLIB_EXP);
2928 DEBUG_P(PerlIO_printf(Perl_debug_log,
2929 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2930 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2932 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2939 cpp_discard_flag = "";
2941 cpp_discard_flag = "-C";
2945 perl = os2_execname(aTHX);
2947 perl = PL_origargv[0];
2951 /* This strips off Perl comments which might interfere with
2952 the C pre-processor, including #!. #line directives are
2953 deliberately stripped to avoid confusion with Perl's version
2954 of #line. FWP played some golf with it so it will fit
2955 into VMS's 255 character buffer.
2958 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2960 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2962 Perl_sv_setpvf(aTHX_ cmd, "\
2963 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2964 perl, quote, code, quote, scriptname, cpp,
2965 cpp_discard_flag, sv, CPPMINUS);
2967 PL_doextract = FALSE;
2968 # ifdef IAMSUID /* actually, this is caught earlier */
2969 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2971 (void)seteuid(PL_uid); /* musn't stay setuid root */
2973 # ifdef HAS_SETREUID
2974 (void)setreuid((Uid_t)-1, PL_uid);
2976 # ifdef HAS_SETRESUID
2977 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2979 PerlProc_setuid(PL_uid);
2983 if (PerlProc_geteuid() != PL_uid)
2984 Perl_croak(aTHX_ "Can't do seteuid!\n");
2986 # endif /* IAMSUID */
2988 DEBUG_P(PerlIO_printf(Perl_debug_log,
2989 "PL_preprocess: cmd=\"%s\"\n",
2992 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2996 else if (!*scriptname) {
2997 forbid_setid("program input from stdin");
2998 PL_rsfp = PerlIO_stdin();
3001 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
3002 # if defined(HAS_FCNTL) && defined(F_SETFD)
3004 /* ensure close-on-exec */
3005 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
3010 # ifndef IAMSUID /* in case script is not readable before setuid */
3012 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
3013 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
3017 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
3018 BIN_EXP, (int)PERL_REVISION,
3020 (int)PERL_SUBVERSION), PL_origargv);
3022 Perl_croak(aTHX_ "Can't do setuid\n");
3028 Perl_croak(aTHX_ "Permission denied\n");
3030 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3031 CopFILE(PL_curcop), Strerror(errno));
3037 * I_SYSSTATVFS HAS_FSTATVFS
3039 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
3040 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3041 * here so that metaconfig picks them up. */
3045 S_fd_on_nosuid_fs(pTHX_ int fd)
3047 int check_okay = 0; /* able to do all the required sys/libcalls */
3048 int on_nosuid = 0; /* the fd is on a nosuid fs */
3050 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
3051 * fstatvfs() is UNIX98.
3052 * fstatfs() is 4.3 BSD.
3053 * ustat()+getmnt() is pre-4.3 BSD.
3054 * getmntent() is O(number-of-mounted-filesystems) and can hang on
3055 * an irrelevant filesystem while trying to reach the right one.
3058 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
3060 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3061 defined(HAS_FSTATVFS)
3062 # define FD_ON_NOSUID_CHECK_OKAY
3063 struct statvfs stfs;
3065 check_okay = fstatvfs(fd, &stfs) == 0;
3066 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
3067 # endif /* fstatvfs */
3069 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3070 defined(PERL_MOUNT_NOSUID) && \
3071 defined(HAS_FSTATFS) && \
3072 defined(HAS_STRUCT_STATFS) && \
3073 defined(HAS_STRUCT_STATFS_F_FLAGS)
3074 # define FD_ON_NOSUID_CHECK_OKAY
3077 check_okay = fstatfs(fd, &stfs) == 0;
3078 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
3079 # endif /* fstatfs */
3081 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3082 defined(PERL_MOUNT_NOSUID) && \
3083 defined(HAS_FSTAT) && \
3084 defined(HAS_USTAT) && \
3085 defined(HAS_GETMNT) && \
3086 defined(HAS_STRUCT_FS_DATA) && \
3088 # define FD_ON_NOSUID_CHECK_OKAY
3091 if (fstat(fd, &fdst) == 0) {
3093 if (ustat(fdst.st_dev, &us) == 0) {
3095 /* NOSTAT_ONE here because we're not examining fields which
3096 * vary between that case and STAT_ONE. */
3097 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
3098 size_t cmplen = sizeof(us.f_fname);
3099 if (sizeof(fsd.fd_req.path) < cmplen)
3100 cmplen = sizeof(fsd.fd_req.path);
3101 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
3102 fdst.st_dev == fsd.fd_req.dev) {
3104 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
3110 # endif /* fstat+ustat+getmnt */
3112 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3113 defined(HAS_GETMNTENT) && \
3114 defined(HAS_HASMNTOPT) && \
3115 defined(MNTOPT_NOSUID)
3116 # define FD_ON_NOSUID_CHECK_OKAY
3117 FILE *mtab = fopen("/etc/mtab", "r");
3118 struct mntent *entry;
3121 if (mtab && (fstat(fd, &stb) == 0)) {
3122 while (entry = getmntent(mtab)) {
3123 if (stat(entry->mnt_dir, &fsb) == 0
3124 && fsb.st_dev == stb.st_dev)
3126 /* found the filesystem */
3128 if (hasmntopt(entry, MNTOPT_NOSUID))
3131 } /* A single fs may well fail its stat(). */
3136 # endif /* getmntent+hasmntopt */
3139 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
3142 #endif /* IAMSUID */
3145 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
3151 /* do we need to emulate setuid on scripts? */
3153 /* This code is for those BSD systems that have setuid #! scripts disabled
3154 * in the kernel because of a security problem. Merely defining DOSUID
3155 * in perl will not fix that problem, but if you have disabled setuid
3156 * scripts in the kernel, this will attempt to emulate setuid and setgid
3157 * on scripts that have those now-otherwise-useless bits set. The setuid
3158 * root version must be called suidperl or sperlN.NNN. If regular perl
3159 * discovers that it has opened a setuid script, it calls suidperl with
3160 * the same argv that it had. If suidperl finds that the script it has
3161 * just opened is NOT setuid root, it sets the effective uid back to the
3162 * uid. We don't just make perl setuid root because that loses the
3163 * effective uid we had before invoking perl, if it was different from the
3166 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3167 * be defined in suidperl only. suidperl must be setuid root. The
3168 * Configure script will set this up for you if you want it.
3174 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3175 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3176 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3181 #ifndef HAS_SETREUID
3182 /* On this access check to make sure the directories are readable,
3183 * there is actually a small window that the user could use to make
3184 * filename point to an accessible directory. So there is a faint
3185 * chance that someone could execute a setuid script down in a
3186 * non-accessible directory. I don't know what to do about that.
3187 * But I don't think it's too important. The manual lies when
3188 * it says access() is useful in setuid programs.
3190 if (PerlLIO_access(CopFILE(PL_curcop),1)) { /*double check*/
3192 Perl_croak(aTHX_ "Permission denied\n");
3195 /* If we can swap euid and uid, then we can determine access rights
3196 * with a simple stat of the file, and then compare device and
3197 * inode to make sure we did stat() on the same file we opened.
3198 * Then we just have to make sure he or she can execute it.
3205 setreuid(PL_euid,PL_uid) < 0
3208 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3211 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3212 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3213 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0) {
3215 Perl_croak(aTHX_ "Permission denied\n"); /* testing full pathname here */
3217 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3218 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp))) {
3220 Perl_croak(aTHX_ "Permission denied\n");
3223 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3224 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3225 (void)PerlIO_close(PL_rsfp);
3227 Perl_croak(aTHX_ "Permission denied\n");
3231 setreuid(PL_uid,PL_euid) < 0
3233 # if defined(HAS_SETRESUID)
3234 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3237 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3238 Perl_croak(aTHX_ "Can't reswap uid and euid");
3239 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3240 Perl_croak(aTHX_ "Permission denied\n");
3242 #endif /* HAS_SETREUID */
3243 #endif /* IAMSUID */
3245 if (!S_ISREG(PL_statbuf.st_mode)) {
3247 Perl_croak(aTHX_ "Permission denied\n");
3249 if (PL_statbuf.st_mode & S_IWOTH)
3250 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3251 PL_doswitches = FALSE; /* -s is insecure in suid */
3252 CopLINE_inc(PL_curcop);
3253 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3254 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3255 Perl_croak(aTHX_ "No #! line");
3256 s = SvPV(PL_linestr,n_a)+2;
3258 while (!isSPACE(*s)) s++;
3259 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3260 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3261 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3262 Perl_croak(aTHX_ "Not a perl script");
3263 while (*s == ' ' || *s == '\t') s++;
3265 * #! arg must be what we saw above. They can invoke it by
3266 * mentioning suidperl explicitly, but they may not add any strange
3267 * arguments beyond what #! says if they do invoke suidperl that way.
3269 len = strlen(validarg);
3270 if (strEQ(validarg," PHOOEY ") ||
3271 strnNE(s,validarg,len) || !isSPACE(s[len]))
3272 Perl_croak(aTHX_ "Args must match #! line");
3275 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3276 PL_euid == PL_statbuf.st_uid)
3278 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3279 FIX YOUR KERNEL, OR PUT A C WRAPPER AROUND THIS SCRIPT!\n");
3280 #endif /* IAMSUID */
3282 if (PL_euid) { /* oops, we're not the setuid root perl */
3283 (void)PerlIO_close(PL_rsfp);
3287 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3288 (int)PERL_REVISION, (int)PERL_VERSION,
3289 (int)PERL_SUBVERSION), PL_origargv);
3292 Perl_croak(aTHX_ "Can't do setuid\n");
3295 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3297 (void)setegid(PL_statbuf.st_gid);
3300 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3302 #ifdef HAS_SETRESGID
3303 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3305 PerlProc_setgid(PL_statbuf.st_gid);
3309 if (PerlProc_getegid() != PL_statbuf.st_gid)
3310 Perl_croak(aTHX_ "Can't do setegid!\n");
3312 if (PL_statbuf.st_mode & S_ISUID) {
3313 if (PL_statbuf.st_uid != PL_euid)
3315 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3318 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3320 #ifdef HAS_SETRESUID
3321 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3323 PerlProc_setuid(PL_statbuf.st_uid);
3327 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3328 Perl_croak(aTHX_ "Can't do seteuid!\n");
3330 else if (PL_uid) { /* oops, mustn't run as root */
3332 (void)seteuid((Uid_t)PL_uid);
3335 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3337 #ifdef HAS_SETRESUID
3338 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3340 PerlProc_setuid((Uid_t)PL_uid);
3344 if (PerlProc_geteuid() != PL_uid)
3345 Perl_croak(aTHX_ "Can't do seteuid!\n");
3348 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3349 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3352 else if (PL_preprocess)
3353 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3354 else if (fdscript >= 0)
3355 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3358 Perl_croak(aTHX_ "Permission denied\n");
3361 /* We absolutely must clear out any saved ids here, so we */
3362 /* exec the real perl, substituting fd script for scriptname. */
3363 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3364 PerlIO_rewind(PL_rsfp);
3365 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3366 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3367 if (!PL_origargv[which]) {
3369 Perl_croak(aTHX_ "Permission denied\n");
3371 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3372 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3373 #if defined(HAS_FCNTL) && defined(F_SETFD)
3374 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3377 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3378 (int)PERL_REVISION, (int)PERL_VERSION,
3379 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3381 Perl_croak(aTHX_ "Can't do setuid\n");
3382 #endif /* IAMSUID */
3384 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3385 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3386 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3387 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3389 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3392 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3393 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3394 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3395 /* not set-id, must be wrapped */
3401 S_find_beginning(pTHX)
3403 register char *s, *s2;
3404 #ifdef MACOS_TRADITIONAL
3408 /* skip forward in input to the real script? */
3411 #ifdef MACOS_TRADITIONAL
3412 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3414 while (PL_doextract || gMacPerl_AlwaysExtract) {
3415 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3416 if (!gMacPerl_AlwaysExtract)
3417 Perl_croak(aTHX_ "No Perl script found in input\n");
3419 if (PL_doextract) /* require explicit override ? */
3420 if (!OverrideExtract(PL_origfilename))
3421 Perl_croak(aTHX_ "User aborted script\n");
3423 PL_doextract = FALSE;
3425 /* Pater peccavi, file does not have #! */
3426 PerlIO_rewind(PL_rsfp);
3431 while (PL_doextract) {
3432 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3433 Perl_croak(aTHX_ "No Perl script found in input\n");
3436 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3437 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3438 PL_doextract = FALSE;
3439 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3441 while (*s == ' ' || *s == '\t') s++;
3443 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3444 if (strnEQ(s2-4,"perl",4))
3446 while ((s = moreswitches(s)))
3449 #ifdef MACOS_TRADITIONAL
3450 /* We are always searching for the #!perl line in MacPerl,
3451 * so if we find it, still keep the line count correct
3452 * by counting lines we already skipped over
3454 for (; maclines > 0 ; maclines--)
3455 PerlIO_ungetc(PL_rsfp, '\n');
3459 /* gMacPerl_AlwaysExtract is false in MPW tool */
3460 } else if (gMacPerl_AlwaysExtract) {
3471 PL_uid = PerlProc_getuid();
3472 PL_euid = PerlProc_geteuid();
3473 PL_gid = PerlProc_getgid();
3474 PL_egid = PerlProc_getegid();
3476 PL_uid |= PL_gid << 16;
3477 PL_euid |= PL_egid << 16;
3479 /* Should not happen: */
3480 CHECK_MALLOC_TAINT(PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3481 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3484 /* This is used very early in the lifetime of the program,
3485 * before even the options are parsed, so PL_tainting has
3486 * not been initialized properly. */
3488 Perl_doing_taint(int argc, char *argv[], char *envp[])
3490 #ifndef PERL_IMPLICIT_SYS
3491 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3492 * before we have an interpreter-- and the whole point of this
3493 * function is to be called at such an early stage. If you are on
3494 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3495 * "tainted because running with altered effective ids', you'll
3496 * have to add your own checks somewhere in here. The two most
3497 * known samples of 'implicitness' are Win32 and NetWare, neither
3498 * of which has much of concept of 'uids'. */
3499 int uid = PerlProc_getuid();
3500 int euid = PerlProc_geteuid();
3501 int gid = PerlProc_getgid();
3502 int egid = PerlProc_getegid();
3508 if (uid && (euid != uid || egid != gid))
3510 #endif /* !PERL_IMPLICIT_SYS */
3511 /* This is a really primitive check; environment gets ignored only
3512 * if -T are the first chars together; otherwise one gets
3513 * "Too late" message. */
3514 if ( argc > 1 && argv[1][0] == '-'
3515 && (argv[1][1] == 't' || argv[1][1] == 'T') )
3521 S_forbid_setid(pTHX_ char *s)
3523 if (PL_euid != PL_uid)
3524 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3525 if (PL_egid != PL_gid)
3526 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3530 Perl_init_debugger(pTHX)
3532 HV *ostash = PL_curstash;
3534 PL_curstash = PL_debstash;
3535 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("DB::args", GV_ADDMULTI, SVt_PVAV))));
3536 AvREAL_off(PL_dbargs);
3537 PL_DBgv = gv_fetchpv("DB::DB", GV_ADDMULTI, SVt_PVGV);
3538 PL_DBline = gv_fetchpv("DB::dbline", GV_ADDMULTI, SVt_PVAV);
3539 PL_DBsub = gv_HVadd(gv_fetchpv("DB::sub", GV_ADDMULTI, SVt_PVHV));
3540 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3541 PL_DBsingle = GvSV((gv_fetchpv("DB::single", GV_ADDMULTI, SVt_PV)));
3542 sv_setiv(PL_DBsingle, 0);
3543 PL_DBtrace = GvSV((gv_fetchpv("DB::trace", GV_ADDMULTI, SVt_PV)));
3544 sv_setiv(PL_DBtrace, 0);
3545 PL_DBsignal = GvSV((gv_fetchpv("DB::signal", GV_ADDMULTI, SVt_PV)));
3546 sv_setiv(PL_DBsignal, 0);
3547 PL_DBassertion = GvSV((gv_fetchpv("DB::assertion", GV_ADDMULTI, SVt_PV)));
3548 sv_setiv(PL_DBassertion, 0);
3549 PL_curstash = ostash;
3552 #ifndef STRESS_REALLOC
3553 #define REASONABLE(size) (size)
3555 #define REASONABLE(size) (1) /* unreasonable */
3559 Perl_init_stacks(pTHX)
3561 /* start with 128-item stack and 8K cxstack */
3562 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3563 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3564 PL_curstackinfo->si_type = PERLSI_MAIN;
3565 PL_curstack = PL_curstackinfo->si_stack;
3566 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3568 PL_stack_base = AvARRAY(PL_curstack);
3569 PL_stack_sp = PL_stack_base;
3570 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3572 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3575 PL_tmps_max = REASONABLE(128);
3577 New(54,PL_markstack,REASONABLE(32),I32);
3578 PL_markstack_ptr = PL_markstack;
3579 PL_markstack_max = PL_markstack + REASONABLE(32);
3583 New(54,PL_scopestack,REASONABLE(32),I32);
3584 PL_scopestack_ix = 0;
3585 PL_scopestack_max = REASONABLE(32);
3587 New(54,PL_savestack,REASONABLE(128),ANY);
3588 PL_savestack_ix = 0;
3589 PL_savestack_max = REASONABLE(128);
3591 New(54,PL_retstack,REASONABLE(16),OP*);
3593 PL_retstack_max = REASONABLE(16);
3601 while (PL_curstackinfo->si_next)
3602 PL_curstackinfo = PL_curstackinfo->si_next;
3603 while (PL_curstackinfo) {
3604 PERL_SI *p = PL_curstackinfo->si_prev;
3605 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3606 Safefree(PL_curstackinfo->si_cxstack);
3607 Safefree(PL_curstackinfo);
3608 PL_curstackinfo = p;
3610 Safefree(PL_tmps_stack);
3611 Safefree(PL_markstack);
3612 Safefree(PL_scopestack);
3613 Safefree(PL_savestack);
3614 Safefree(PL_retstack);
3623 lex_start(PL_linestr);
3625 PL_subname = newSVpvn("main",4);
3629 S_init_predump_symbols(pTHX)
3634 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3635 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3636 GvMULTI_on(PL_stdingv);
3637 io = GvIOp(PL_stdingv);
3638 IoTYPE(io) = IoTYPE_RDONLY;
3639 IoIFP(io) = PerlIO_stdin();
3640 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3642 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3644 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3647 IoTYPE(io) = IoTYPE_WRONLY;
3648 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3650 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3652 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3654 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3655 GvMULTI_on(PL_stderrgv);
3656 io = GvIOp(PL_stderrgv);
3657 IoTYPE(io) = IoTYPE_WRONLY;
3658 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3659 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3661 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3663 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3666 Safefree(PL_osname);
3667 PL_osname = savepv(OSNAME);
3671 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3674 argc--,argv++; /* skip name of script */
3675 if (PL_doswitches) {
3676 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3679 if (argv[0][1] == '-' && !argv[0][2]) {
3683 if ((s = strchr(argv[0], '='))) {
3685 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3688 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3691 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3692 GvMULTI_on(PL_argvgv);
3693 (void)gv_AVadd(PL_argvgv);
3694 av_clear(GvAVn(PL_argvgv));
3695 for (; argc > 0; argc--,argv++) {
3696 SV *sv = newSVpv(argv[0],0);
3697 av_push(GvAVn(PL_argvgv),sv);
3698 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3699 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3702 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3703 (void)sv_utf8_decode(sv);
3708 #ifdef HAS_PROCSELFEXE
3709 /* This is a function so that we don't hold on to MAXPATHLEN
3710 bytes of stack longer than necessary
3713 S_procself_val(pTHX_ SV *sv, char *arg0)
3715 char buf[MAXPATHLEN];
3716 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3718 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3719 includes a spurious NUL which will cause $^X to fail in system
3720 or backticks (this will prevent extensions from being built and
3721 many tests from working). readlink is not meant to add a NUL.
3722 Normal readlink works fine.
3724 if (len > 0 && buf[len-1] == '\0') {
3728 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3729 returning the text "unknown" from the readlink rather than the path
3730 to the executable (or returning an error from the readlink). Any valid
3731 path has a '/' in it somewhere, so use that to validate the result.
3732 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3734 if (len > 0 && memchr(buf, '/', len)) {
3735 sv_setpvn(sv,buf,len);
3741 #endif /* HAS_PROCSELFEXE */
3744 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3750 PL_toptarget = NEWSV(0,0);
3751 sv_upgrade(PL_toptarget, SVt_PVFM);
3752 sv_setpvn(PL_toptarget, "", 0);
3753 PL_bodytarget = NEWSV(0,0);
3754 sv_upgrade(PL_bodytarget, SVt_PVFM);
3755 sv_setpvn(PL_bodytarget, "", 0);
3756 PL_formtarget = PL_bodytarget;
3760 init_argv_symbols(argc,argv);
3762 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3763 #ifdef MACOS_TRADITIONAL
3764 /* $0 is not majick on a Mac */
3765 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3767 sv_setpv(GvSV(tmpgv),PL_origfilename);
3768 magicname("0", "0", 1);
3771 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3772 #ifdef HAS_PROCSELFEXE
3773 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3776 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3778 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3782 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3784 GvMULTI_on(PL_envgv);
3785 hv = GvHVn(PL_envgv);
3786 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3788 #ifdef USE_ENVIRON_ARRAY
3789 /* Note that if the supplied env parameter is actually a copy
3790 of the global environ then it may now point to free'd memory
3791 if the environment has been modified since. To avoid this
3792 problem we treat env==NULL as meaning 'use the default'
3797 # ifdef USE_ITHREADS
3798 && PL_curinterp == aTHX
3802 environ[0] = Nullch;
3805 for (; *env; env++) {
3806 if (!(s = strchr(*env,'=')))
3808 #if defined(MSDOS) && !defined(DJGPP)
3813 sv = newSVpv(s+1, 0);
3814 (void)hv_store(hv, *env, s - *env, sv, 0);
3818 #endif /* USE_ENVIRON_ARRAY */
3819 #endif /* !PERL_MICRO */
3822 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3823 SvREADONLY_off(GvSV(tmpgv));
3824 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3825 SvREADONLY_on(GvSV(tmpgv));
3827 #ifdef THREADS_HAVE_PIDS
3828 PL_ppid = (IV)getppid();
3831 /* touch @F array to prevent spurious warnings 20020415 MJD */
3833 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3835 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3836 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3837 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3841 S_init_perllib(pTHX)
3846 s = PerlEnv_getenv("PERL5LIB");
3848 incpush(s, TRUE, TRUE, TRUE);
3850 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE, TRUE);
3852 /* Treat PERL5?LIB as a possible search list logical name -- the
3853 * "natural" VMS idiom for a Unix path string. We allow each
3854 * element to be a set of |-separated directories for compatibility.
3858 if (my_trnlnm("PERL5LIB",buf,0))
3859 do { incpush(buf,TRUE,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3861 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE,TRUE);
3865 /* Use the ~-expanded versions of APPLLIB (undocumented),
3866 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3869 incpush(APPLLIB_EXP, TRUE, TRUE, TRUE);
3873 incpush(ARCHLIB_EXP, FALSE, FALSE, TRUE);
3875 #ifdef MACOS_TRADITIONAL
3878 SV * privdir = NEWSV(55, 0);
3879 char * macperl = PerlEnv_getenv("MACPERL");
3884 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3885 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3886 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3887 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3888 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3889 incpush(SvPVX(privdir), TRUE, FALSE, TRUE);
3891 SvREFCNT_dec(privdir);
3894 incpush(":", FALSE, FALSE, TRUE);
3897 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3900 incpush(PRIVLIB_EXP, TRUE, FALSE, TRUE);
3902 incpush(PRIVLIB_EXP, FALSE, FALSE, TRUE);
3906 /* sitearch is always relative to sitelib on Windows for
3907 * DLL-based path intuition to work correctly */
3908 # if !defined(WIN32)
3909 incpush(SITEARCH_EXP, FALSE, FALSE, TRUE);
3915 /* this picks up sitearch as well */
3916 incpush(SITELIB_EXP, TRUE, FALSE, TRUE);
3918 incpush(SITELIB_EXP, FALSE, FALSE, TRUE);
3922 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3923 incpush(SITELIB_STEM, FALSE, TRUE, TRUE);
3926 #ifdef PERL_VENDORARCH_EXP
3927 /* vendorarch is always relative to vendorlib on Windows for
3928 * DLL-based path intuition to work correctly */
3929 # if !defined(WIN32)
3930 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE, TRUE);
3934 #ifdef PERL_VENDORLIB_EXP
3936 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE, TRUE); /* this picks up vendorarch as well */
3938 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE, TRUE);
3942 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3943 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE, TRUE);
3946 #ifdef PERL_OTHERLIBDIRS
3947 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE, TRUE);
3951 incpush(".", FALSE, FALSE, TRUE);
3952 #endif /* MACOS_TRADITIONAL */
3955 #if defined(DOSISH) || defined(EPOC)
3956 # define PERLLIB_SEP ';'
3959 # define PERLLIB_SEP '|'
3961 # if defined(MACOS_TRADITIONAL)
3962 # define PERLLIB_SEP ','
3964 # define PERLLIB_SEP ':'
3968 #ifndef PERLLIB_MANGLE
3969 # define PERLLIB_MANGLE(s,n) (s)
3973 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers, int usesep)
3975 SV *subdir = Nullsv;
3980 if (addsubdirs || addoldvers) {
3981 subdir = sv_newmortal();
3984 /* Break at all separators */
3986 SV *libdir = NEWSV(55,0);
3989 /* skip any consecutive separators */
3991 while ( *p == PERLLIB_SEP ) {
3992 /* Uncomment the next line for PATH semantics */
3993 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3998 if ( usesep && (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3999 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
4004 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
4005 p = Nullch; /* break out */
4007 #ifdef MACOS_TRADITIONAL
4008 if (!strchr(SvPVX(libdir), ':')) {
4011 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
4013 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
4014 sv_catpv(libdir, ":");
4018 * BEFORE pushing libdir onto @INC we may first push version- and
4019 * archname-specific sub-directories.
4021 if (addsubdirs || addoldvers) {
4022 #ifdef PERL_INC_VERSION_LIST
4023 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
4024 const char *incverlist[] = { PERL_INC_VERSION_LIST };
4025 const char **incver;
4032 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
4034 while (unix[len-1] == '/') len--; /* Cosmetic */
4035 sv_usepvn(libdir,unix,len);
4038 PerlIO_printf(Perl_error_log,
4039 "Failed to unixify @INC element \"%s\"\n",
4043 #ifdef MACOS_TRADITIONAL
4044 #define PERL_AV_SUFFIX_FMT ""
4045 #define PERL_ARCH_FMT "%s:"
4046 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
4048 #define PERL_AV_SUFFIX_FMT "/"
4049 #define PERL_ARCH_FMT "/%s"
4050 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
4052 /* .../version/archname if -d .../version/archname */
4053 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
4055 (int)PERL_REVISION, (int)PERL_VERSION,
4056 (int)PERL_SUBVERSION, ARCHNAME);
4057 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4058 S_ISDIR(tmpstatbuf.st_mode))
4059 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4061 /* .../version if -d .../version */
4062 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
4063 (int)PERL_REVISION, (int)PERL_VERSION,
4064 (int)PERL_SUBVERSION);
4065 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4066 S_ISDIR(tmpstatbuf.st_mode))
4067 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4069 /* .../archname if -d .../archname */
4070 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
4071 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4072 S_ISDIR(tmpstatbuf.st_mode))
4073 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4076 #ifdef PERL_INC_VERSION_LIST
4078 for (incver = incverlist; *incver; incver++) {
4079 /* .../xxx if -d .../xxx */
4080 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
4081 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
4082 S_ISDIR(tmpstatbuf.st_mode))
4083 av_push(GvAVn(PL_incgv), newSVsv(subdir));
4089 /* finally push this lib directory on the end of @INC */
4090 av_push(GvAVn(PL_incgv), libdir);
4094 #ifdef USE_5005THREADS
4095 STATIC struct perl_thread *
4096 S_init_main_thread(pTHX)
4098 #if !defined(PERL_IMPLICIT_CONTEXT)
4099 struct perl_thread *thr;
4103 Newz(53, thr, 1, struct perl_thread);
4104 PL_curcop = &PL_compiling;
4105 thr->interp = PERL_GET_INTERP;
4106 thr->cvcache = newHV();
4107 thr->threadsv = newAV();
4108 /* thr->threadsvp is set when find_threadsv is called */
4109 thr->specific = newAV();
4110 thr->flags = THRf_R_JOINABLE;
4111 MUTEX_INIT(&thr->mutex);
4112 /* Handcraft thrsv similarly to mess_sv */
4113 New(53, PL_thrsv, 1, SV);
4114 Newz(53, xpv, 1, XPV);
4115 SvFLAGS(PL_thrsv) = SVt_PV;
4116 SvANY(PL_thrsv) = (void*)xpv;
4117 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
4118 SvPVX(PL_thrsv) = (char*)thr;
4119 SvCUR_set(PL_thrsv, sizeof(thr));
4120 SvLEN_set(PL_thrsv, sizeof(thr));
4121 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
4122 thr->oursv = PL_thrsv;
4123 PL_chopset = " \n-";
4126 MUTEX_LOCK(&PL_threads_mutex);
4132 MUTEX_UNLOCK(&PL_threads_mutex);
4134 #ifdef HAVE_THREAD_INTERN
4135 Perl_init_thread_intern(thr);
4138 #ifdef SET_THREAD_SELF
4139 SET_THREAD_SELF(thr);
4141 thr->self = pthread_self();
4142 #endif /* SET_THREAD_SELF */
4146 * These must come after the thread self setting
4147 * because sv_setpvn does SvTAINT and the taint
4148 * fields thread selfness being set.
4150 PL_toptarget = NEWSV(0,0);
4151 sv_upgrade(PL_toptarget, SVt_PVFM);
4152 sv_setpvn(PL_toptarget, "", 0);
4153 PL_bodytarget = NEWSV(0,0);
4154 sv_upgrade(PL_bodytarget, SVt_PVFM);
4155 sv_setpvn(PL_bodytarget, "", 0);
4156 PL_formtarget = PL_bodytarget;
4157 thr->errsv = newSVpvn("", 0);
4158 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
4161 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
4162 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
4163 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
4164 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
4165 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
4166 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
4168 PL_reginterp_cnt = 0;
4172 #endif /* USE_5005THREADS */
4175 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4178 line_t oldline = CopLINE(PL_curcop);
4184 while (AvFILL(paramList) >= 0) {
4185 cv = (CV*)av_shift(paramList);
4187 if (paramList == PL_beginav) {
4188 /* save PL_beginav for compiler */
4189 if (! PL_beginav_save)
4190 PL_beginav_save = newAV();
4191 av_push(PL_beginav_save, (SV*)cv);
4193 else if (paramList == PL_checkav) {
4194 /* save PL_checkav for compiler */
4195 if (! PL_checkav_save)
4196 PL_checkav_save = newAV();
4197 av_push(PL_checkav_save, (SV*)cv);
4202 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4203 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
4209 #ifndef PERL_FLEXIBLE_EXCEPTIONS
4213 (void)SvPV(atsv, len);
4215 PL_curcop = &PL_compiling;
4216 CopLINE_set(PL_curcop, oldline);
4217 if (paramList == PL_beginav)
4218 sv_catpv(atsv, "BEGIN failed--compilation aborted");
4220 Perl_sv_catpvf(aTHX_ atsv,
4221 "%s failed--call queue aborted",
4222 paramList == PL_checkav ? "CHECK"
4223 : paramList == PL_initav ? "INIT"
4225 while (PL_scopestack_ix > oldscope)
4228 Perl_croak(aTHX_ "%"SVf"", atsv);
4235 /* my_exit() was called */
4236 while (PL_scopestack_ix > oldscope)
4239 PL_curstash = PL_defstash;
4240 PL_curcop = &PL_compiling;
4241 CopLINE_set(PL_curcop, oldline);
4243 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4244 if (paramList == PL_beginav)
4245 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4247 Perl_croak(aTHX_ "%s failed--call queue aborted",
4248 paramList == PL_checkav ? "CHECK"
4249 : paramList == PL_initav ? "INIT"
4256 PL_curcop = &PL_compiling;
4257 CopLINE_set(PL_curcop, oldline);
4260 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4268 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4270 S_vcall_list_body(pTHX_ va_list args)
4272 CV *cv = va_arg(args, CV*);
4273 return call_list_body(cv);
4278 S_call_list_body(pTHX_ CV *cv)
4280 PUSHMARK(PL_stack_sp);
4281 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4286 Perl_my_exit(pTHX_ U32 status)
4288 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4289 thr, (unsigned long) status));
4298 STATUS_NATIVE_SET(status);
4305 Perl_my_failure_exit(pTHX)
4308 if (vaxc$errno & 1) {
4309 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4310 STATUS_NATIVE_SET(44);
4313 if (!vaxc$errno && errno) /* unlikely */
4314 STATUS_NATIVE_SET(44);
4316 STATUS_NATIVE_SET(vaxc$errno);
4321 STATUS_POSIX_SET(errno);
4323 exitstatus = STATUS_POSIX >> 8;
4324 if (exitstatus & 255)
4325 STATUS_POSIX_SET(exitstatus);
4327 STATUS_POSIX_SET(255);
4334 S_my_exit_jump(pTHX)
4336 register PERL_CONTEXT *cx;
4341 SvREFCNT_dec(PL_e_script);
4342 PL_e_script = Nullsv;
4345 POPSTACK_TO(PL_mainstack);
4346 if (cxstack_ix >= 0) {
4349 POPBLOCK(cx,PL_curpm);
4357 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4360 p = SvPVX(PL_e_script);
4361 nl = strchr(p, '\n');
4362 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4364 filter_del(read_e_script);
4367 sv_catpvn(buf_sv, p, nl-p);
4368 sv_chop(PL_e_script, nl);