3 * Copyright (c) 1987-2001 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
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); \
71 PERL_SET_THX(my_perl); \
75 # define INIT_TLS_AND_INTERP \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
80 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;
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
102 Zero(my_perl, 1, PerlInterpreter);
119 =for apidoc perl_alloc
121 Allocates a new Perl interpreter. See L<perlembed>.
129 PerlInterpreter *my_perl;
131 /* New() needs interpreter, so call malloc() instead */
132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
135 Zero(my_perl, 1, PerlInterpreter);
138 #endif /* PERL_IMPLICIT_SYS */
141 =for apidoc perl_construct
143 Initializes a new Perl interpreter. See L<perlembed>.
149 perl_construct(pTHXx)
153 struct perl_thread *thr = NULL;
154 #endif /* FAKE_THREADS */
155 #endif /* USE_THREADS */
159 PL_perl_destruct_level = 1;
161 if (PL_perl_destruct_level > 0)
165 /* Init the real globals (and main thread)? */
168 MUTEX_INIT(&PL_sv_mutex);
170 * Safe to use basic SV functions from now on (though
171 * not things like mortals or tainting yet).
173 MUTEX_INIT(&PL_eval_mutex);
174 COND_INIT(&PL_eval_cond);
175 MUTEX_INIT(&PL_threads_mutex);
176 COND_INIT(&PL_nthreads_cond);
177 # ifdef EMULATE_ATOMIC_REFCOUNTS
178 MUTEX_INIT(&PL_svref_mutex);
179 # endif /* EMULATE_ATOMIC_REFCOUNTS */
181 MUTEX_INIT(&PL_cred_mutex);
182 MUTEX_INIT(&PL_sv_lock_mutex);
183 MUTEX_INIT(&PL_fdpid_mutex);
185 thr = init_main_thread();
186 #endif /* USE_THREADS */
188 #ifdef PERL_FLEXIBLE_EXCEPTIONS
189 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
192 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
194 PL_linestr = NEWSV(65,79);
195 sv_upgrade(PL_linestr,SVt_PVIV);
197 if (!SvREADONLY(&PL_sv_undef)) {
198 /* set read-only and try to insure than we wont see REFCNT==0
201 SvREADONLY_on(&PL_sv_undef);
202 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
204 sv_setpv(&PL_sv_no,PL_No);
206 SvREADONLY_on(&PL_sv_no);
207 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
209 sv_setpv(&PL_sv_yes,PL_Yes);
211 SvREADONLY_on(&PL_sv_yes);
212 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
217 /* PL_sighandlerp = sighandler; */
219 PL_sighandlerp = Perl_sighandler;
221 PL_pidstatus = newHV();
225 * There is no way we can refer to them from Perl so close them to save
226 * space. The other alternative would be to provide STDAUX and STDPRN
229 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
230 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
234 PL_nrs = newSVpvn("\n", 1);
235 PL_rs = SvREFCNT_inc(PL_nrs);
240 PL_lex_state = LEX_NOTPARSING;
246 SET_NUMERIC_STANDARD();
250 PL_patchlevel = NEWSV(0,4);
251 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
252 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
253 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
254 s = (U8*)SvPVX(PL_patchlevel);
255 /* Build version strings using "native" characters */
256 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
257 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
258 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
264 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
265 + ((NV)PERL_SUBVERSION / (NV)1000000)
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
273 #if defined(LOCAL_PATCH_COUNT)
274 PL_localpatches = local_patches; /* For possible -v */
277 #ifdef HAVE_INTERP_INTERN
281 PerlIO_init(); /* Hook to IO system */
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
285 PL_errors = newSVpvn("",0);
287 PL_regex_padav = newAV();
289 #ifdef USE_REENTRANT_API
290 New(31337, PL_reentrant_buffer,1, REBUF);
291 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
297 =for apidoc perl_destruct
299 Shuts down a Perl interpreter. See L<perlembed>.
307 int destruct_level; /* 0=none, 1=full, 2=full with checks */
312 #endif /* USE_THREADS */
314 /* wait for all pseudo-forked children to finish */
315 PERL_WAIT_FOR_CHILDREN;
319 /* Pass 1 on any remaining threads: detach joinables, join zombies */
321 MUTEX_LOCK(&PL_threads_mutex);
322 DEBUG_S(PerlIO_printf(Perl_debug_log,
323 "perl_destruct: waiting for %d threads...\n",
325 for (t = thr->next; t != thr; t = t->next) {
326 MUTEX_LOCK(&t->mutex);
327 switch (ThrSTATE(t)) {
330 DEBUG_S(PerlIO_printf(Perl_debug_log,
331 "perl_destruct: joining zombie %p\n", t));
332 ThrSETSTATE(t, THRf_DEAD);
333 MUTEX_UNLOCK(&t->mutex);
336 * The SvREFCNT_dec below may take a long time (e.g. av
337 * may contain an object scalar whose destructor gets
338 * called) so we have to unlock threads_mutex and start
341 MUTEX_UNLOCK(&PL_threads_mutex);
343 SvREFCNT_dec((SV*)av);
344 DEBUG_S(PerlIO_printf(Perl_debug_log,
345 "perl_destruct: joined zombie %p OK\n", t));
347 case THRf_R_JOINABLE:
348 DEBUG_S(PerlIO_printf(Perl_debug_log,
349 "perl_destruct: detaching thread %p\n", t));
350 ThrSETSTATE(t, THRf_R_DETACHED);
352 * We unlock threads_mutex and t->mutex in the opposite order
353 * from which we locked them just so that DETACH won't
354 * deadlock if it panics. It's only a breach of good style
355 * not a bug since they are unlocks not locks.
357 MUTEX_UNLOCK(&PL_threads_mutex);
359 MUTEX_UNLOCK(&t->mutex);
362 DEBUG_S(PerlIO_printf(Perl_debug_log,
363 "perl_destruct: ignoring %p (state %u)\n",
365 MUTEX_UNLOCK(&t->mutex);
366 /* fall through and out */
369 /* We leave the above "Pass 1" loop with threads_mutex still locked */
371 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
372 while (PL_nthreads > 1)
374 DEBUG_S(PerlIO_printf(Perl_debug_log,
375 "perl_destruct: final wait for %d threads\n",
377 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
379 /* At this point, we're the last thread */
380 MUTEX_UNLOCK(&PL_threads_mutex);
381 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
382 MUTEX_DESTROY(&PL_threads_mutex);
383 COND_DESTROY(&PL_nthreads_cond);
385 #endif /* !defined(FAKE_THREADS) */
386 #endif /* USE_THREADS */
388 destruct_level = PL_perl_destruct_level;
392 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
394 if (destruct_level < i)
405 if (PL_endav && !PL_minus_c)
406 call_list(PL_scopestack_ix, PL_endav);
411 /* We must account for everything. */
413 /* Destroy the main CV and syntax tree */
415 PL_curpad = AvARRAY(PL_comppad);
416 op_free(PL_main_root);
417 PL_main_root = Nullop;
419 PL_curcop = &PL_compiling;
420 PL_main_start = Nullop;
421 SvREFCNT_dec(PL_main_cv);
425 /* Tell PerlIO we are about to tear things apart in case
426 we have layers which are using resources that should
430 PerlIO_destruct(aTHX);
432 if (PL_sv_objcount) {
434 * Try to destruct global references. We do this first so that the
435 * destructors and destructees still exist. Some sv's might remain.
436 * Non-referenced objects are on their own.
441 /* unhook hooks which will soon be, or use, destroyed data */
442 SvREFCNT_dec(PL_warnhook);
443 PL_warnhook = Nullsv;
444 SvREFCNT_dec(PL_diehook);
447 /* call exit list functions */
448 while (PL_exitlistlen-- > 0)
449 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
451 Safefree(PL_exitlist);
453 if (destruct_level == 0){
455 DEBUG_P(debprofdump());
457 /* The exit() function will do everything that needs doing. */
461 /* jettison our possibly duplicated environment */
463 #ifdef USE_ENVIRON_ARRAY
464 if (environ != PL_origenviron) {
467 for (i = 0; environ[i]; i++)
468 safesysfree(environ[i]);
469 /* Must use safesysfree() when working with environ. */
470 safesysfree(environ);
472 environ = PL_origenviron;
477 /* the syntax tree is shared between clones
478 * so op_free(PL_main_root) only ReREFCNT_dec's
479 * REGEXPs in the parent interpreter
480 * we need to manually ReREFCNT_dec for the clones
483 I32 i = AvFILLp(PL_regex_padav) + 1;
484 SV **ary = AvARRAY(PL_regex_padav);
488 REGEXP *re = (REGEXP *)SvIVX(resv);
490 if (SvFLAGS(resv) & SVf_BREAK) {
491 /* this is PL_reg_curpm, already freed
492 * flag is set in regexec.c:S_regtry
494 SvFLAGS(resv) &= ~SVf_BREAK;
501 SvREFCNT_dec(PL_regex_padav);
502 PL_regex_padav = Nullav;
506 /* loosen bonds of global variables */
509 (void)PerlIO_close(PL_rsfp);
513 /* Filters for program text */
514 SvREFCNT_dec(PL_rsfp_filters);
515 PL_rsfp_filters = Nullav;
518 PL_preprocess = FALSE;
524 PL_doswitches = FALSE;
525 PL_dowarn = G_WARN_OFF;
526 PL_doextract = FALSE;
527 PL_sawampersand = FALSE; /* must save all match strings */
530 Safefree(PL_inplace);
532 SvREFCNT_dec(PL_patchlevel);
535 SvREFCNT_dec(PL_e_script);
536 PL_e_script = Nullsv;
539 while (--PL_origargc >= 0) {
540 Safefree(PL_origargv[PL_origargc]);
542 Safefree(PL_origargv);
544 /* magical thingies */
546 SvREFCNT_dec(PL_ofs_sv); /* $, */
549 SvREFCNT_dec(PL_ors_sv); /* $\ */
552 SvREFCNT_dec(PL_rs); /* $/ */
555 SvREFCNT_dec(PL_nrs); /* $/ helper */
558 PL_multiline = 0; /* $* */
559 Safefree(PL_osname); /* $^O */
562 SvREFCNT_dec(PL_statname);
563 PL_statname = Nullsv;
566 /* defgv, aka *_ should be taken care of elsewhere */
568 /* clean up after study() */
569 SvREFCNT_dec(PL_lastscream);
570 PL_lastscream = Nullsv;
571 Safefree(PL_screamfirst);
573 Safefree(PL_screamnext);
577 Safefree(PL_efloatbuf);
578 PL_efloatbuf = Nullch;
581 /* startup and shutdown function lists */
582 SvREFCNT_dec(PL_beginav);
583 SvREFCNT_dec(PL_endav);
584 SvREFCNT_dec(PL_checkav);
585 SvREFCNT_dec(PL_initav);
591 /* shortcuts just get cleared */
597 PL_argvoutgv = Nullgv;
599 PL_stderrgv = Nullgv;
600 PL_last_in_gv = Nullgv;
602 PL_debstash = Nullhv;
604 /* reset so print() ends up where we expect */
607 SvREFCNT_dec(PL_argvout_stack);
608 PL_argvout_stack = Nullav;
610 SvREFCNT_dec(PL_modglobal);
611 PL_modglobal = Nullhv;
612 SvREFCNT_dec(PL_preambleav);
613 PL_preambleav = Nullav;
614 SvREFCNT_dec(PL_subname);
616 SvREFCNT_dec(PL_linestr);
618 SvREFCNT_dec(PL_pidstatus);
619 PL_pidstatus = Nullhv;
620 SvREFCNT_dec(PL_toptarget);
621 PL_toptarget = Nullsv;
622 SvREFCNT_dec(PL_bodytarget);
623 PL_bodytarget = Nullsv;
624 PL_formtarget = Nullsv;
626 /* free locale stuff */
627 #ifdef USE_LOCALE_COLLATE
628 Safefree(PL_collation_name);
629 PL_collation_name = Nullch;
632 #ifdef USE_LOCALE_NUMERIC
633 Safefree(PL_numeric_name);
634 PL_numeric_name = Nullch;
635 SvREFCNT_dec(PL_numeric_radix_sv);
638 /* clear utf8 character classes */
639 SvREFCNT_dec(PL_utf8_alnum);
640 SvREFCNT_dec(PL_utf8_alnumc);
641 SvREFCNT_dec(PL_utf8_ascii);
642 SvREFCNT_dec(PL_utf8_alpha);
643 SvREFCNT_dec(PL_utf8_space);
644 SvREFCNT_dec(PL_utf8_cntrl);
645 SvREFCNT_dec(PL_utf8_graph);
646 SvREFCNT_dec(PL_utf8_digit);
647 SvREFCNT_dec(PL_utf8_upper);
648 SvREFCNT_dec(PL_utf8_lower);
649 SvREFCNT_dec(PL_utf8_print);
650 SvREFCNT_dec(PL_utf8_punct);
651 SvREFCNT_dec(PL_utf8_xdigit);
652 SvREFCNT_dec(PL_utf8_mark);
653 SvREFCNT_dec(PL_utf8_toupper);
654 SvREFCNT_dec(PL_utf8_tolower);
655 PL_utf8_alnum = Nullsv;
656 PL_utf8_alnumc = Nullsv;
657 PL_utf8_ascii = Nullsv;
658 PL_utf8_alpha = Nullsv;
659 PL_utf8_space = Nullsv;
660 PL_utf8_cntrl = Nullsv;
661 PL_utf8_graph = Nullsv;
662 PL_utf8_digit = Nullsv;
663 PL_utf8_upper = Nullsv;
664 PL_utf8_lower = Nullsv;
665 PL_utf8_print = Nullsv;
666 PL_utf8_punct = Nullsv;
667 PL_utf8_xdigit = Nullsv;
668 PL_utf8_mark = Nullsv;
669 PL_utf8_toupper = Nullsv;
670 PL_utf8_totitle = Nullsv;
671 PL_utf8_tolower = Nullsv;
673 if (!specialWARN(PL_compiling.cop_warnings))
674 SvREFCNT_dec(PL_compiling.cop_warnings);
675 PL_compiling.cop_warnings = Nullsv;
676 if (!specialCopIO(PL_compiling.cop_io))
677 SvREFCNT_dec(PL_compiling.cop_io);
678 PL_compiling.cop_io = Nullsv;
680 Safefree(CopFILE(&PL_compiling));
681 CopFILE(&PL_compiling) = Nullch;
682 Safefree(CopSTASHPV(&PL_compiling));
684 SvREFCNT_dec(CopFILEGV(&PL_compiling));
685 CopFILEGV(&PL_compiling) = Nullgv;
686 /* cop_stash is not refcounted */
689 /* Prepare to destruct main symbol table. */
694 SvREFCNT_dec(PL_curstname);
695 PL_curstname = Nullsv;
697 /* clear queued errors */
698 SvREFCNT_dec(PL_errors);
702 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
703 if (PL_scopestack_ix != 0)
704 Perl_warner(aTHX_ WARN_INTERNAL,
705 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
706 (long)PL_scopestack_ix);
707 if (PL_savestack_ix != 0)
708 Perl_warner(aTHX_ WARN_INTERNAL,
709 "Unbalanced saves: %ld more saves than restores\n",
710 (long)PL_savestack_ix);
711 if (PL_tmps_floor != -1)
712 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
713 (long)PL_tmps_floor + 1);
714 if (cxstack_ix != -1)
715 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
716 (long)cxstack_ix + 1);
719 /* Now absolutely destruct everything, somehow or other, loops or no. */
720 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
721 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
723 /* the 2 is for PL_fdpid and PL_strtab */
724 while (PL_sv_count > 2 && sv_clean_all())
727 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
728 SvFLAGS(PL_fdpid) |= SVt_PVAV;
729 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
730 SvFLAGS(PL_strtab) |= SVt_PVHV;
732 AvREAL_off(PL_fdpid); /* no surviving entries */
733 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
736 #ifdef HAVE_INTERP_INTERN
740 /* Destruct the global string table. */
742 /* Yell and reset the HeVAL() slots that are still holding refcounts,
743 * so that sv_free() won't fail on them.
751 max = HvMAX(PL_strtab);
752 array = HvARRAY(PL_strtab);
755 if (hent && ckWARN_d(WARN_INTERNAL)) {
756 Perl_warner(aTHX_ WARN_INTERNAL,
757 "Unbalanced string table refcount: (%d) for \"%s\"",
758 HeVAL(hent) - Nullsv, HeKEY(hent));
759 HeVAL(hent) = Nullsv;
769 SvREFCNT_dec(PL_strtab);
772 /* free the pointer table used for cloning */
773 ptr_table_free(PL_ptr_table);
776 /* free special SVs */
778 SvREFCNT(&PL_sv_yes) = 0;
779 sv_clear(&PL_sv_yes);
780 SvANY(&PL_sv_yes) = NULL;
781 SvFLAGS(&PL_sv_yes) = 0;
783 SvREFCNT(&PL_sv_no) = 0;
785 SvANY(&PL_sv_no) = NULL;
786 SvFLAGS(&PL_sv_no) = 0;
788 SvREFCNT(&PL_sv_undef) = 0;
789 SvREADONLY_off(&PL_sv_undef);
791 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
792 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
794 Safefree(PL_origfilename);
795 Safefree(PL_reg_start_tmp);
797 Safefree(PL_reg_curpm);
798 Safefree(PL_reg_poscache);
799 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
800 Safefree(PL_op_mask);
801 Safefree(PL_psig_ptr);
802 Safefree(PL_psig_name);
803 Safefree(PL_bitcount);
804 Safefree(PL_psig_pend);
806 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
808 DEBUG_P(debprofdump());
810 MUTEX_DESTROY(&PL_strtab_mutex);
811 MUTEX_DESTROY(&PL_sv_mutex);
812 MUTEX_DESTROY(&PL_eval_mutex);
813 MUTEX_DESTROY(&PL_cred_mutex);
814 MUTEX_DESTROY(&PL_fdpid_mutex);
815 COND_DESTROY(&PL_eval_cond);
816 #ifdef EMULATE_ATOMIC_REFCOUNTS
817 MUTEX_DESTROY(&PL_svref_mutex);
818 #endif /* EMULATE_ATOMIC_REFCOUNTS */
820 /* As the penultimate thing, free the non-arena SV for thrsv */
821 Safefree(SvPVX(PL_thrsv));
822 Safefree(SvANY(PL_thrsv));
825 #endif /* USE_THREADS */
827 #ifdef USE_REENTRANT_API
828 Safefree(PL_reentrant_buffer->tmbuff);
829 Safefree(PL_reentrant_buffer);
834 /* As the absolutely last thing, free the non-arena SV for mess() */
837 /* it could have accumulated taint magic */
838 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
841 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
842 moremagic = mg->mg_moremagic;
843 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
845 Safefree(mg->mg_ptr);
849 /* we know that type >= SVt_PV */
850 (void)SvOOK_off(PL_mess_sv);
851 Safefree(SvPVX(PL_mess_sv));
852 Safefree(SvANY(PL_mess_sv));
853 Safefree(PL_mess_sv);
859 =for apidoc perl_free
861 Releases a Perl interpreter. See L<perlembed>.
869 #if defined(PERL_OBJECT)
872 # if defined(WIN32) || defined(NETWARE)
873 # if defined(PERL_IMPLICIT_SYS)
875 void *host = nw_internal_host;
877 void *host = w32_internal_host;
880 if (PerlProc_lasthost()) {
886 nw5_delete_internal_host(host);
888 win32_delete_internal_host(host);
901 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
903 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
904 PL_exitlist[PL_exitlistlen].fn = fn;
905 PL_exitlist[PL_exitlistlen].ptr = ptr;
910 =for apidoc perl_parse
912 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
918 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
927 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
930 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
931 setuid perl scripts securely.\n");
935 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
936 _dyld_lookup_and_bind
937 ("__environ", (unsigned long *) &environ_pointer, NULL);
942 /* we copy rather than point to argv
943 * since perl_clone will copy and perl_destruct
944 * has no way of knowing if we've made a copy or
948 New(0, PL_origargv, i+1, char*);
949 PL_origargv[i] = '\0';
951 PL_origargv[i] = savepv(argv[i]);
955 #ifdef USE_ENVIRON_ARRAY
956 PL_origenviron = environ;
961 /* Come here if running an undumped a.out. */
963 PL_origfilename = savepv(argv[0]);
964 PL_do_undump = FALSE;
965 cxstack_ix = -1; /* start label stack again */
967 init_postdump_symbols(argc,argv,env);
972 PL_curpad = AvARRAY(PL_comppad);
973 op_free(PL_main_root);
974 PL_main_root = Nullop;
976 PL_main_start = Nullop;
977 SvREFCNT_dec(PL_main_cv);
981 oldscope = PL_scopestack_ix;
982 PL_dowarn = G_WARN_OFF;
984 #ifdef PERL_FLEXIBLE_EXCEPTIONS
985 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
991 #ifndef PERL_FLEXIBLE_EXCEPTIONS
992 parse_body(env,xsinit);
995 call_list(oldscope, PL_checkav);
1002 /* my_exit() was called */
1003 while (PL_scopestack_ix > oldscope)
1006 PL_curstash = PL_defstash;
1008 call_list(oldscope, PL_checkav);
1009 ret = STATUS_NATIVE_EXPORT;
1012 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1020 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1022 S_vparse_body(pTHX_ va_list args)
1024 char **env = va_arg(args, char**);
1025 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1027 return parse_body(env, xsinit);
1032 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1034 int argc = PL_origargc;
1035 char **argv = PL_origargv;
1036 char *scriptname = NULL;
1038 VOL bool dosearch = FALSE;
1039 char *validarg = "";
1043 char *popts, *cddir = Nullch;
1045 sv_setpvn(PL_linestr,"",0);
1046 sv = newSVpvn("",0); /* first used for -I flags */
1050 for (argc--,argv++; argc > 0; argc--,argv++) {
1051 if (argv[0][0] != '-' || !argv[0][1])
1055 validarg = " PHOOEY ";
1064 win32_argv2utf8(argc-1, argv+1);
1067 #ifndef PERL_STRICT_CR
1091 if ((s = moreswitches(s)))
1101 #ifdef MACOS_TRADITIONAL
1102 /* ignore -e for Dev:Pseudo argument */
1103 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1106 if (PL_euid != PL_uid || PL_egid != PL_gid)
1107 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1109 PL_e_script = newSVpvn("",0);
1110 filter_add(read_e_script, NULL);
1113 sv_catpv(PL_e_script, s);
1115 sv_catpv(PL_e_script, argv[1]);
1119 Perl_croak(aTHX_ "No code specified for -e");
1120 sv_catpv(PL_e_script, "\n");
1123 case 'I': /* -I handled both here and in moreswitches() */
1125 if (!*++s && (s=argv[1]) != Nullch) {
1130 STRLEN len = strlen(s);
1131 p = savepvn(s, len);
1132 incpush(p, TRUE, TRUE);
1133 sv_catpvn(sv, "-I", 2);
1134 sv_catpvn(sv, p, len);
1135 sv_catpvn(sv, " ", 1);
1139 Perl_croak(aTHX_ "No directory specified for -I");
1143 PL_preprocess = TRUE;
1153 PL_preambleav = newAV();
1154 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1156 PL_Sv = newSVpv("print myconfig();",0);
1158 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1160 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1162 sv_catpv(PL_Sv,"\" Compile-time options:");
1164 sv_catpv(PL_Sv," DEBUGGING");
1166 # ifdef MULTIPLICITY
1167 sv_catpv(PL_Sv," MULTIPLICITY");
1170 sv_catpv(PL_Sv," USE_THREADS");
1172 # ifdef USE_ITHREADS
1173 sv_catpv(PL_Sv," USE_ITHREADS");
1175 # ifdef USE_64_BIT_INT
1176 sv_catpv(PL_Sv," USE_64_BIT_INT");
1178 # ifdef USE_64_BIT_ALL
1179 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1181 # ifdef USE_LONG_DOUBLE
1182 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1184 # ifdef USE_LARGE_FILES
1185 sv_catpv(PL_Sv," USE_LARGE_FILES");
1188 sv_catpv(PL_Sv," USE_SOCKS");
1191 sv_catpv(PL_Sv," PERL_OBJECT");
1193 # ifdef PERL_IMPLICIT_CONTEXT
1194 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1196 # ifdef PERL_IMPLICIT_SYS
1197 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1199 sv_catpv(PL_Sv,"\\n\",");
1201 #if defined(LOCAL_PATCH_COUNT)
1202 if (LOCAL_PATCH_COUNT > 0) {
1204 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1205 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1206 if (PL_localpatches[i])
1207 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1211 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1214 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1216 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1219 sv_catpv(PL_Sv, "; \
1221 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1224 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1227 print \" \\%ENV:\\n @env\\n\" if @env; \
1228 print \" \\@INC:\\n @INC\\n\";");
1231 PL_Sv = newSVpv("config_vars(qw(",0);
1232 sv_catpv(PL_Sv, ++s);
1233 sv_catpv(PL_Sv, "))");
1236 av_push(PL_preambleav, PL_Sv);
1237 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1240 PL_doextract = TRUE;
1248 if (!*++s || isSPACE(*s)) {
1252 /* catch use of gnu style long options */
1253 if (strEQ(s, "version")) {
1257 if (strEQ(s, "help")) {
1264 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1270 #ifndef SECURE_INTERNAL_GETENV
1273 (popts = PerlEnv_getenv("PERL5OPT")))
1278 if (*s == '-' && *(s+1) == 'T')
1293 if (!strchr("DIMUdmw", *s))
1294 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1307 scriptname = argv[0];
1310 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1312 else if (scriptname == Nullch) {
1314 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1322 open_script(scriptname,dosearch,sv,&fdscript);
1324 validate_suid(validarg, scriptname,fdscript);
1327 #if defined(SIGCHLD) || defined(SIGCLD)
1330 # define SIGCHLD SIGCLD
1332 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1333 if (sigstate == SIG_IGN) {
1334 if (ckWARN(WARN_SIGNAL))
1335 Perl_warner(aTHX_ WARN_SIGNAL,
1336 "Can't ignore signal CHLD, forcing to default");
1337 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1343 #ifdef MACOS_TRADITIONAL
1344 if (PL_doextract || gMacPerl_AlwaysExtract) {
1349 if (cddir && PerlDir_chdir(cddir) < 0)
1350 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1354 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1355 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1356 CvUNIQUE_on(PL_compcv);
1358 PL_comppad = newAV();
1359 av_push(PL_comppad, Nullsv);
1360 PL_curpad = AvARRAY(PL_comppad);
1361 PL_comppad_name = newAV();
1362 PL_comppad_name_fill = 0;
1363 PL_min_intro_pending = 0;
1366 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1367 PL_curpad[0] = (SV*)newAV();
1368 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1369 CvOWNER(PL_compcv) = 0;
1370 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1371 MUTEX_INIT(CvMUTEXP(PL_compcv));
1372 #endif /* USE_THREADS */
1374 comppadlist = newAV();
1375 AvREAL_off(comppadlist);
1376 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1377 av_store(comppadlist, 1, (SV*)PL_comppad);
1378 CvPADLIST(PL_compcv) = comppadlist;
1381 boot_core_UNIVERSAL();
1383 boot_core_xsutils();
1387 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1389 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1395 # ifdef HAS_SOCKS5_INIT
1396 socks5_init(argv[0]);
1402 init_predump_symbols();
1403 /* init_postdump_symbols not currently designed to be called */
1404 /* more than once (ENV isn't cleared first, for example) */
1405 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1407 init_postdump_symbols(argc,argv,env);
1411 /* now parse the script */
1413 SETERRNO(0,SS$_NORMAL);
1415 #ifdef MACOS_TRADITIONAL
1416 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1418 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1420 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1421 MacPerl_MPWFileName(PL_origfilename));
1425 if (yyparse() || PL_error_count) {
1427 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1429 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1434 CopLINE_set(PL_curcop, 0);
1435 PL_curstash = PL_defstash;
1436 PL_preprocess = FALSE;
1438 SvREFCNT_dec(PL_e_script);
1439 PL_e_script = Nullsv;
1442 /* now that script is parsed, we can modify record separator */
1443 SvREFCNT_dec(PL_rs);
1444 PL_rs = SvREFCNT_inc(PL_nrs);
1445 sv_setsv(get_sv("/", TRUE), PL_rs);
1450 SAVECOPFILE(PL_curcop);
1451 SAVECOPLINE(PL_curcop);
1452 gv_check(PL_defstash);
1459 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1460 dump_mstats("after compilation:");
1469 =for apidoc perl_run
1471 Tells a Perl interpreter to run. See L<perlembed>.
1486 oldscope = PL_scopestack_ix;
1488 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1490 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1496 cxstack_ix = -1; /* start context stack again */
1498 case 0: /* normal completion */
1499 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1504 case 2: /* my_exit() */
1505 while (PL_scopestack_ix > oldscope)
1508 PL_curstash = PL_defstash;
1510 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1511 dump_mstats("after execution: ");
1513 ret = STATUS_NATIVE_EXPORT;
1517 POPSTACK_TO(PL_mainstack);
1520 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1530 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1532 S_vrun_body(pTHX_ va_list args)
1534 I32 oldscope = va_arg(args, I32);
1536 return run_body(oldscope);
1542 S_run_body(pTHX_ I32 oldscope)
1544 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1545 PL_sawampersand ? "Enabling" : "Omitting"));
1547 if (!PL_restartop) {
1548 DEBUG_x(dump_all());
1549 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1550 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1554 #ifdef MACOS_TRADITIONAL
1555 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1557 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1561 if (PERLDB_SINGLE && PL_DBsingle)
1562 sv_setiv(PL_DBsingle, 1);
1564 call_list(oldscope, PL_initav);
1570 PL_op = PL_restartop;
1574 else if (PL_main_start) {
1575 CvDEPTH(PL_main_cv) = 1;
1576 PL_op = PL_main_start;
1586 =for apidoc p||get_sv
1588 Returns the SV of the specified Perl scalar. If C<create> is set and the
1589 Perl variable does not exist then it will be created. If C<create> is not
1590 set and the variable does not exist then NULL is returned.
1596 Perl_get_sv(pTHX_ const char *name, I32 create)
1600 if (name[1] == '\0' && !isALPHA(name[0])) {
1601 PADOFFSET tmp = find_threadsv(name);
1602 if (tmp != NOT_IN_PAD)
1603 return THREADSV(tmp);
1605 #endif /* USE_THREADS */
1606 gv = gv_fetchpv(name, create, SVt_PV);
1613 =for apidoc p||get_av
1615 Returns the AV of the specified Perl array. If C<create> is set and the
1616 Perl variable does not exist then it will be created. If C<create> is not
1617 set and the variable does not exist then NULL is returned.
1623 Perl_get_av(pTHX_ const char *name, I32 create)
1625 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1634 =for apidoc p||get_hv
1636 Returns the HV of the specified Perl hash. If C<create> is set and the
1637 Perl variable does not exist then it will be created. If C<create> is not
1638 set and the variable does not exist then NULL is returned.
1644 Perl_get_hv(pTHX_ const char *name, I32 create)
1646 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1655 =for apidoc p||get_cv
1657 Returns the CV of the specified Perl subroutine. If C<create> is set and
1658 the Perl subroutine does not exist then it will be declared (which has the
1659 same effect as saying C<sub name;>). If C<create> is not set and the
1660 subroutine does not exist then NULL is returned.
1666 Perl_get_cv(pTHX_ const char *name, I32 create)
1668 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1669 /* XXX unsafe for threads if eval_owner isn't held */
1670 /* XXX this is probably not what they think they're getting.
1671 * It has the same effect as "sub name;", i.e. just a forward
1673 if (create && !GvCVu(gv))
1674 return newSUB(start_subparse(FALSE, 0),
1675 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1683 /* Be sure to refetch the stack pointer after calling these routines. */
1686 =for apidoc p||call_argv
1688 Performs a callback to the specified Perl sub. See L<perlcall>.
1694 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1696 /* See G_* flags in cop.h */
1697 /* null terminated arg list */
1704 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1709 return call_pv(sub_name, flags);
1713 =for apidoc p||call_pv
1715 Performs a callback to the specified Perl sub. See L<perlcall>.
1721 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1722 /* name of the subroutine */
1723 /* See G_* flags in cop.h */
1725 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1729 =for apidoc p||call_method
1731 Performs a callback to the specified Perl method. The blessed object must
1732 be on the stack. See L<perlcall>.
1738 Perl_call_method(pTHX_ const char *methname, I32 flags)
1739 /* name of the subroutine */
1740 /* See G_* flags in cop.h */
1742 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1745 /* May be called with any of a CV, a GV, or an SV containing the name. */
1747 =for apidoc p||call_sv
1749 Performs a callback to the Perl sub whose name is in the SV. See
1756 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1757 /* See G_* flags in cop.h */
1760 LOGOP myop; /* fake syntax tree node */
1763 volatile I32 retval = 0;
1765 bool oldcatch = CATCH_GET;
1770 if (flags & G_DISCARD) {
1775 Zero(&myop, 1, LOGOP);
1776 myop.op_next = Nullop;
1777 if (!(flags & G_NOARGS))
1778 myop.op_flags |= OPf_STACKED;
1779 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1780 (flags & G_ARRAY) ? OPf_WANT_LIST :
1785 EXTEND(PL_stack_sp, 1);
1786 *++PL_stack_sp = sv;
1788 oldscope = PL_scopestack_ix;
1790 if (PERLDB_SUB && PL_curstash != PL_debstash
1791 /* Handle first BEGIN of -d. */
1792 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1793 /* Try harder, since this may have been a sighandler, thus
1794 * curstash may be meaningless. */
1795 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1796 && !(flags & G_NODEBUG))
1797 PL_op->op_private |= OPpENTERSUB_DB;
1799 if (flags & G_METHOD) {
1800 Zero(&method_op, 1, UNOP);
1801 method_op.op_next = PL_op;
1802 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1803 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1804 PL_op = (OP*)&method_op;
1807 if (!(flags & G_EVAL)) {
1809 call_body((OP*)&myop, FALSE);
1810 retval = PL_stack_sp - (PL_stack_base + oldmark);
1811 CATCH_SET(oldcatch);
1814 myop.op_other = (OP*)&myop;
1816 /* we're trying to emulate pp_entertry() here */
1818 register PERL_CONTEXT *cx;
1819 I32 gimme = GIMME_V;
1824 push_return(Nullop);
1825 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1827 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1829 PL_in_eval = EVAL_INEVAL;
1830 if (flags & G_KEEPERR)
1831 PL_in_eval |= EVAL_KEEPERR;
1837 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1839 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1846 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1848 call_body((OP*)&myop, FALSE);
1850 retval = PL_stack_sp - (PL_stack_base + oldmark);
1851 if (!(flags & G_KEEPERR))
1858 /* my_exit() was called */
1859 PL_curstash = PL_defstash;
1862 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1863 Perl_croak(aTHX_ "Callback called exit");
1868 PL_op = PL_restartop;
1872 PL_stack_sp = PL_stack_base + oldmark;
1873 if (flags & G_ARRAY)
1877 *++PL_stack_sp = &PL_sv_undef;
1882 if (PL_scopestack_ix > oldscope) {
1886 register PERL_CONTEXT *cx;
1898 if (flags & G_DISCARD) {
1899 PL_stack_sp = PL_stack_base + oldmark;
1908 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1910 S_vcall_body(pTHX_ va_list args)
1912 OP *myop = va_arg(args, OP*);
1913 int is_eval = va_arg(args, int);
1915 call_body(myop, is_eval);
1921 S_call_body(pTHX_ OP *myop, int is_eval)
1923 if (PL_op == myop) {
1925 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1927 PL_op = Perl_pp_entersub(aTHX); /* this does */
1933 /* Eval a string. The G_EVAL flag is always assumed. */
1936 =for apidoc p||eval_sv
1938 Tells Perl to C<eval> the string in the SV.
1944 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1946 /* See G_* flags in cop.h */
1949 UNOP myop; /* fake syntax tree node */
1950 volatile I32 oldmark = SP - PL_stack_base;
1951 volatile I32 retval = 0;
1957 if (flags & G_DISCARD) {
1964 Zero(PL_op, 1, UNOP);
1965 EXTEND(PL_stack_sp, 1);
1966 *++PL_stack_sp = sv;
1967 oldscope = PL_scopestack_ix;
1969 if (!(flags & G_NOARGS))
1970 myop.op_flags = OPf_STACKED;
1971 myop.op_next = Nullop;
1972 myop.op_type = OP_ENTEREVAL;
1973 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1974 (flags & G_ARRAY) ? OPf_WANT_LIST :
1976 if (flags & G_KEEPERR)
1977 myop.op_flags |= OPf_SPECIAL;
1979 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1981 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1988 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1990 call_body((OP*)&myop,TRUE);
1992 retval = PL_stack_sp - (PL_stack_base + oldmark);
1993 if (!(flags & G_KEEPERR))
2000 /* my_exit() was called */
2001 PL_curstash = PL_defstash;
2004 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2005 Perl_croak(aTHX_ "Callback called exit");
2010 PL_op = PL_restartop;
2014 PL_stack_sp = PL_stack_base + oldmark;
2015 if (flags & G_ARRAY)
2019 *++PL_stack_sp = &PL_sv_undef;
2025 if (flags & G_DISCARD) {
2026 PL_stack_sp = PL_stack_base + oldmark;
2036 =for apidoc p||eval_pv
2038 Tells Perl to C<eval> the given string and return an SV* result.
2044 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2047 SV* sv = newSVpv(p, 0);
2049 eval_sv(sv, G_SCALAR);
2056 if (croak_on_error && SvTRUE(ERRSV)) {
2058 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2064 /* Require a module. */
2067 =for apidoc p||require_pv
2069 Tells Perl to C<require> the file named by the string argument. It is
2070 analogous to the Perl code C<eval "require '$file'">. It's even
2071 implemented that way; consider using Perl_load_module instead.
2076 Perl_require_pv(pTHX_ const char *pv)
2080 PUSHSTACKi(PERLSI_REQUIRE);
2082 sv = sv_newmortal();
2083 sv_setpv(sv, "require '");
2086 eval_sv(sv, G_DISCARD);
2092 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2096 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2097 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2101 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2103 /* This message really ought to be max 23 lines.
2104 * Removed -h because the user already knows that option. Others? */
2106 static char *usage_msg[] = {
2107 "-0[octal] specify record separator (\\0, if no argument)",
2108 "-a autosplit mode with -n or -p (splits $_ into @F)",
2109 "-C enable native wide character system interfaces",
2110 "-c check syntax only (runs BEGIN and CHECK blocks)",
2111 "-d[:debugger] run program under debugger",
2112 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2113 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2114 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2115 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2116 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2117 "-l[octal] enable line ending processing, specifies line terminator",
2118 "-[mM][-]module execute `use/no module...' before executing program",
2119 "-n assume 'while (<>) { ... }' loop around program",
2120 "-p assume loop like -n but print line also, like sed",
2121 "-P run program through C preprocessor before compilation",
2122 "-s enable rudimentary parsing for switches after programfile",
2123 "-S look for programfile using PATH environment variable",
2124 "-T enable tainting checks",
2125 "-u dump core after parsing program",
2126 "-U allow unsafe operations",
2127 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2128 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2129 "-w enable many useful warnings (RECOMMENDED)",
2130 "-W enable all warnings",
2131 "-X disable all warnings",
2132 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2136 char **p = usage_msg;
2138 PerlIO_printf(PerlIO_stdout(),
2139 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2142 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2145 /* This routine handles any switches that can be given during run */
2148 Perl_moreswitches(pTHX_ char *s)
2156 numlen = 0; /* disallow underscores */
2157 rschar = (U32)scan_oct(s, 4, &numlen);
2158 SvREFCNT_dec(PL_nrs);
2159 if (rschar & ~((U8)~0))
2160 PL_nrs = &PL_sv_undef;
2161 else if (!rschar && numlen >= 2)
2162 PL_nrs = newSVpvn("", 0);
2165 PL_nrs = newSVpvn(&ch, 1);
2170 PL_widesyscalls = TRUE;
2175 PL_splitstr = savepv(s + 1);
2189 /* The following permits -d:Mod to accepts arguments following an =
2190 in the fashion that -MSome::Mod does. */
2191 if (*s == ':' || *s == '=') {
2194 sv = newSVpv("use Devel::", 0);
2196 /* We now allow -d:Module=Foo,Bar */
2197 while(isALNUM(*s) || *s==':') ++s;
2199 sv_catpv(sv, start);
2201 sv_catpvn(sv, start, s-start);
2202 sv_catpv(sv, " split(/,/,q{");
2207 my_setenv("PERL5DB", SvPV(sv, PL_na));
2210 PL_perldb = PERLDB_ALL;
2218 if (isALPHA(s[1])) {
2219 /* if adding extra options, remember to update DEBUG_MASK */
2220 static char debopts[] = "psltocPmfrxuLHXDSTR";
2223 for (s++; *s && (d = strchr(debopts,*s)); s++)
2224 PL_debug |= 1 << (d - debopts);
2227 PL_debug = atoi(s+1);
2228 for (s++; isDIGIT(*s); s++) ;
2230 PL_debug |= DEBUG_TOP_FLAG;
2232 if (ckWARN_d(WARN_DEBUGGING))
2233 Perl_warner(aTHX_ WARN_DEBUGGING,
2234 "Recompile perl with -DDEBUGGING to use -D switch\n");
2235 for (s++; isALNUM(*s); s++) ;
2241 usage(PL_origargv[0]);
2245 Safefree(PL_inplace);
2246 PL_inplace = savepv(s+1);
2248 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2251 if (*s == '-') /* Additional switches on #! line. */
2255 case 'I': /* -I handled both here and in parse_perl() */
2258 while (*s && isSPACE(*s))
2263 /* ignore trailing spaces (possibly followed by other switches) */
2265 for (e = p; *e && !isSPACE(*e); e++) ;
2269 } while (*p && *p != '-');
2270 e = savepvn(s, e-s);
2271 incpush(e, TRUE, TRUE);
2278 Perl_croak(aTHX_ "No directory specified for -I");
2284 SvREFCNT_dec(PL_ors_sv);
2288 PL_ors_sv = newSVpvn("\n",1);
2289 numlen = 0; /* disallow underscores */
2290 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2294 if (RsPARA(PL_nrs)) {
2295 PL_ors_sv = newSVpvn("\n\n",2);
2298 PL_ors_sv = newSVsv(PL_nrs);
2303 forbid_setid("-M"); /* XXX ? */
2306 forbid_setid("-m"); /* XXX ? */
2311 /* -M-foo == 'no foo' */
2312 if (*s == '-') { use = "no "; ++s; }
2313 sv = newSVpv(use,0);
2315 /* We allow -M'Module qw(Foo Bar)' */
2316 while(isALNUM(*s) || *s==':') ++s;
2318 sv_catpv(sv, start);
2319 if (*(start-1) == 'm') {
2321 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2322 sv_catpv( sv, " ()");
2326 Perl_croak(aTHX_ "Module name required with -%c option",
2328 sv_catpvn(sv, start, s-start);
2329 sv_catpv(sv, " split(/,/,q{");
2335 PL_preambleav = newAV();
2336 av_push(PL_preambleav, sv);
2339 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2351 PL_doswitches = TRUE;
2356 Perl_croak(aTHX_ "Too late for \"-T\" option");
2360 #ifdef MACOS_TRADITIONAL
2361 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2363 PL_do_undump = TRUE;
2372 PerlIO_printf(PerlIO_stdout(),
2373 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2374 PL_patchlevel, ARCHNAME));
2376 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2377 PerlIO_printf(PerlIO_stdout(),
2378 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2379 PerlIO_printf(PerlIO_stdout(),
2380 Perl_form(aTHX_ " built under %s at %s %s\n",
2381 OSNAME, __DATE__, __TIME__));
2382 PerlIO_printf(PerlIO_stdout(),
2383 Perl_form(aTHX_ " OS Specific Release: %s\n",
2387 #if defined(LOCAL_PATCH_COUNT)
2388 if (LOCAL_PATCH_COUNT > 0)
2389 PerlIO_printf(PerlIO_stdout(),
2390 "\n(with %d registered patch%s, "
2391 "see perl -V for more detail)",
2392 (int)LOCAL_PATCH_COUNT,
2393 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2396 PerlIO_printf(PerlIO_stdout(),
2397 "\n\nCopyright 1987-2001, Larry Wall\n");
2398 #ifdef MACOS_TRADITIONAL
2399 PerlIO_printf(PerlIO_stdout(),
2400 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2403 PerlIO_printf(PerlIO_stdout(),
2404 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2407 PerlIO_printf(PerlIO_stdout(),
2408 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2409 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2412 PerlIO_printf(PerlIO_stdout(),
2413 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2414 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2417 PerlIO_printf(PerlIO_stdout(),
2418 "atariST series port, ++jrb bammi@cadence.com\n");
2421 PerlIO_printf(PerlIO_stdout(),
2422 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2425 PerlIO_printf(PerlIO_stdout(),
2426 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2429 PerlIO_printf(PerlIO_stdout(),
2430 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2433 PerlIO_printf(PerlIO_stdout(),
2434 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2437 PerlIO_printf(PerlIO_stdout(),
2438 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2441 PerlIO_printf(PerlIO_stdout(),
2442 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2445 PerlIO_printf(PerlIO_stdout(),
2446 "MiNT port by Guido Flohr, 1997-1999\n");
2449 PerlIO_printf(PerlIO_stdout(),
2450 "EPOC port by Olaf Flebbe, 1999-2000\n");
2453 printf("WINCE port by Rainer Keuchel, 2001\n");
2454 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2457 #ifdef BINARY_BUILD_NOTICE
2458 BINARY_BUILD_NOTICE;
2460 PerlIO_printf(PerlIO_stdout(),
2462 Perl may be copied only under the terms of either the Artistic License or the\n\
2463 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2464 Complete documentation for Perl, including FAQ lists, should be found on\n\
2465 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2466 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2469 if (! (PL_dowarn & G_WARN_ALL_MASK))
2470 PL_dowarn |= G_WARN_ON;
2474 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2475 PL_compiling.cop_warnings = pWARN_ALL ;
2479 PL_dowarn = G_WARN_ALL_OFF;
2480 PL_compiling.cop_warnings = pWARN_NONE ;
2485 if (s[1] == '-') /* Additional switches on #! line. */
2490 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2496 #ifdef ALTERNATE_SHEBANG
2497 case 'S': /* OS/2 needs -S on "extproc" line. */
2505 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2510 /* compliments of Tom Christiansen */
2512 /* unexec() can be found in the Gnu emacs distribution */
2513 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2516 Perl_my_unexec(pTHX)
2524 prog = newSVpv(BIN_EXP, 0);
2525 sv_catpv(prog, "/perl");
2526 file = newSVpv(PL_origfilename, 0);
2527 sv_catpv(file, ".perldump");
2529 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2530 /* unexec prints msg to stderr in case of failure */
2531 PerlProc_exit(status);
2534 # include <lib$routines.h>
2535 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2537 ABORT(); /* for use with undump */
2542 /* initialize curinterp */
2547 #ifdef PERL_OBJECT /* XXX kludge */
2550 PL_chopset = " \n-"; \
2551 PL_copline = NOLINE; \
2552 PL_curcop = &PL_compiling;\
2553 PL_curcopdb = NULL; \
2555 PL_dumpindent = 4; \
2556 PL_laststatval = -1; \
2557 PL_laststype = OP_STAT; \
2558 PL_maxscream = -1; \
2559 PL_maxsysfd = MAXSYSFD; \
2560 PL_statname = Nullsv; \
2561 PL_tmps_floor = -1; \
2563 PL_op_mask = NULL; \
2564 PL_laststatval = -1; \
2565 PL_laststype = OP_STAT; \
2566 PL_mess_sv = Nullsv; \
2567 PL_splitstr = " "; \
2568 PL_generation = 100; \
2569 PL_exitlist = NULL; \
2570 PL_exitlistlen = 0; \
2572 PL_in_clean_objs = FALSE; \
2573 PL_in_clean_all = FALSE; \
2574 PL_profiledata = NULL; \
2576 PL_rsfp_filters = Nullav; \
2581 # ifdef MULTIPLICITY
2582 # define PERLVAR(var,type)
2583 # define PERLVARA(var,n,type)
2584 # if defined(PERL_IMPLICIT_CONTEXT)
2585 # if defined(USE_THREADS)
2586 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2587 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2588 # else /* !USE_THREADS */
2589 # define PERLVARI(var,type,init) aTHX->var = init;
2590 # define PERLVARIC(var,type,init) aTHX->var = init;
2591 # endif /* USE_THREADS */
2593 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2594 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2596 # include "intrpvar.h"
2597 # ifndef USE_THREADS
2598 # include "thrdvar.h"
2605 # define PERLVAR(var,type)
2606 # define PERLVARA(var,n,type)
2607 # define PERLVARI(var,type,init) PL_##var = init;
2608 # define PERLVARIC(var,type,init) PL_##var = init;
2609 # include "intrpvar.h"
2610 # ifndef USE_THREADS
2611 # include "thrdvar.h"
2623 S_init_main_stash(pTHX)
2627 /* Note that strtab is a rather special HV. Assumptions are made
2628 about not iterating on it, and not adding tie magic to it.
2629 It is properly deallocated in perl_destruct() */
2630 PL_strtab = newHV();
2632 MUTEX_INIT(&PL_strtab_mutex);
2634 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2635 hv_ksplit(PL_strtab, 512);
2637 PL_curstash = PL_defstash = newHV();
2638 PL_curstname = newSVpvn("main",4);
2639 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2640 SvREFCNT_dec(GvHV(gv));
2641 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2643 HvNAME(PL_defstash) = savepv("main");
2644 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2645 GvMULTI_on(PL_incgv);
2646 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2647 GvMULTI_on(PL_hintgv);
2648 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2649 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2650 GvMULTI_on(PL_errgv);
2651 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2652 GvMULTI_on(PL_replgv);
2653 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2654 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2655 sv_setpvn(ERRSV, "", 0);
2656 PL_curstash = PL_defstash;
2657 CopSTASH_set(&PL_compiling, PL_defstash);
2658 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2659 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2660 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2661 /* We must init $/ before switches are processed. */
2662 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2666 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2671 PL_origfilename = savepv("-e");
2674 /* if find_script() returns, it returns a malloc()-ed value */
2675 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2677 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2678 char *s = scriptname + 8;
2679 *fdscript = atoi(s);
2683 scriptname = savepv(s + 1);
2684 Safefree(PL_origfilename);
2685 PL_origfilename = scriptname;
2691 Safefree(CopFILE(PL_curcop));
2693 SvREFCNT_dec(CopFILEGV(PL_curcop));
2695 CopFILE_set(PL_curcop, PL_origfilename);
2696 if (strEQ(PL_origfilename,"-"))
2698 if (*fdscript >= 0) {
2699 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2700 #if defined(HAS_FCNTL) && defined(F_SETFD)
2702 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2705 else if (PL_preprocess) {
2706 char *cpp_cfg = CPPSTDIN;
2707 SV *cpp = newSVpvn("",0);
2708 SV *cmd = NEWSV(0,0);
2710 if (strEQ(cpp_cfg, "cppstdin"))
2711 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2712 sv_catpv(cpp, cpp_cfg);
2714 sv_catpvn(sv, "-I", 2);
2715 sv_catpv(sv,PRIVLIB_EXP);
2717 DEBUG_P(PerlIO_printf(Perl_debug_log,
2718 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2719 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2720 #if defined(MSDOS) || defined(WIN32)
2721 Perl_sv_setpvf(aTHX_ cmd, "\
2722 sed %s -e \"/^[^#]/b\" \
2723 -e \"/^#[ ]*include[ ]/b\" \
2724 -e \"/^#[ ]*define[ ]/b\" \
2725 -e \"/^#[ ]*if[ ]/b\" \
2726 -e \"/^#[ ]*ifdef[ ]/b\" \
2727 -e \"/^#[ ]*ifndef[ ]/b\" \
2728 -e \"/^#[ ]*else/b\" \
2729 -e \"/^#[ ]*elif[ ]/b\" \
2730 -e \"/^#[ ]*undef[ ]/b\" \
2731 -e \"/^#[ ]*endif/b\" \
2733 %s | %"SVf" -C %"SVf" %s",
2734 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2737 Perl_sv_setpvf(aTHX_ cmd, "\
2738 %s %s -e '/^[^#]/b' \
2739 -e '/^#[ ]*include[ ]/b' \
2740 -e '/^#[ ]*define[ ]/b' \
2741 -e '/^#[ ]*if[ ]/b' \
2742 -e '/^#[ ]*ifdef[ ]/b' \
2743 -e '/^#[ ]*ifndef[ ]/b' \
2744 -e '/^#[ ]*else/b' \
2745 -e '/^#[ ]*elif[ ]/b' \
2746 -e '/^#[ ]*undef[ ]/b' \
2747 -e '/^#[ ]*endif/b' \
2749 %s | %"SVf" %"SVf" %s",
2751 Perl_sv_setpvf(aTHX_ cmd, "\
2752 %s %s -e '/^[^#]/b' \
2753 -e '/^#[ ]*include[ ]/b' \
2754 -e '/^#[ ]*define[ ]/b' \
2755 -e '/^#[ ]*if[ ]/b' \
2756 -e '/^#[ ]*ifdef[ ]/b' \
2757 -e '/^#[ ]*ifndef[ ]/b' \
2758 -e '/^#[ ]*else/b' \
2759 -e '/^#[ ]*elif[ ]/b' \
2760 -e '/^#[ ]*undef[ ]/b' \
2761 -e '/^#[ ]*endif/b' \
2763 %s | %"SVf" -C %"SVf" %s",
2770 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2772 scriptname, cpp, sv, CPPMINUS);
2773 PL_doextract = FALSE;
2774 #ifdef IAMSUID /* actually, this is caught earlier */
2775 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2777 (void)seteuid(PL_uid); /* musn't stay setuid root */
2780 (void)setreuid((Uid_t)-1, PL_uid);
2782 #ifdef HAS_SETRESUID
2783 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2785 PerlProc_setuid(PL_uid);
2789 if (PerlProc_geteuid() != PL_uid)
2790 Perl_croak(aTHX_ "Can't do seteuid!\n");
2792 #endif /* IAMSUID */
2793 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2797 else if (!*scriptname) {
2798 forbid_setid("program input from stdin");
2799 PL_rsfp = PerlIO_stdin();
2802 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2803 #if defined(HAS_FCNTL) && defined(F_SETFD)
2805 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2810 #ifndef IAMSUID /* in case script is not readable before setuid */
2812 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2813 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2816 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2817 (int)PERL_REVISION, (int)PERL_VERSION,
2818 (int)PERL_SUBVERSION), PL_origargv);
2819 Perl_croak(aTHX_ "Can't do setuid\n");
2825 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2828 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2829 CopFILE(PL_curcop), Strerror(errno));
2835 * I_SYSSTATVFS HAS_FSTATVFS
2837 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2838 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2839 * here so that metaconfig picks them up. */
2843 S_fd_on_nosuid_fs(pTHX_ int fd)
2845 int check_okay = 0; /* able to do all the required sys/libcalls */
2846 int on_nosuid = 0; /* the fd is on a nosuid fs */
2848 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2849 * fstatvfs() is UNIX98.
2850 * fstatfs() is 4.3 BSD.
2851 * ustat()+getmnt() is pre-4.3 BSD.
2852 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2853 * an irrelevant filesystem while trying to reach the right one.
2856 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2858 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2859 defined(HAS_FSTATVFS)
2860 # define FD_ON_NOSUID_CHECK_OKAY
2861 struct statvfs stfs;
2863 check_okay = fstatvfs(fd, &stfs) == 0;
2864 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2865 # endif /* fstatvfs */
2867 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2868 defined(PERL_MOUNT_NOSUID) && \
2869 defined(HAS_FSTATFS) && \
2870 defined(HAS_STRUCT_STATFS) && \
2871 defined(HAS_STRUCT_STATFS_F_FLAGS)
2872 # define FD_ON_NOSUID_CHECK_OKAY
2875 check_okay = fstatfs(fd, &stfs) == 0;
2876 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2877 # endif /* fstatfs */
2879 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2880 defined(PERL_MOUNT_NOSUID) && \
2881 defined(HAS_FSTAT) && \
2882 defined(HAS_USTAT) && \
2883 defined(HAS_GETMNT) && \
2884 defined(HAS_STRUCT_FS_DATA) && \
2886 # define FD_ON_NOSUID_CHECK_OKAY
2889 if (fstat(fd, &fdst) == 0) {
2891 if (ustat(fdst.st_dev, &us) == 0) {
2893 /* NOSTAT_ONE here because we're not examining fields which
2894 * vary between that case and STAT_ONE. */
2895 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2896 size_t cmplen = sizeof(us.f_fname);
2897 if (sizeof(fsd.fd_req.path) < cmplen)
2898 cmplen = sizeof(fsd.fd_req.path);
2899 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2900 fdst.st_dev == fsd.fd_req.dev) {
2902 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2908 # endif /* fstat+ustat+getmnt */
2910 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2911 defined(HAS_GETMNTENT) && \
2912 defined(HAS_HASMNTOPT) && \
2913 defined(MNTOPT_NOSUID)
2914 # define FD_ON_NOSUID_CHECK_OKAY
2915 FILE *mtab = fopen("/etc/mtab", "r");
2916 struct mntent *entry;
2917 struct stat stb, fsb;
2919 if (mtab && (fstat(fd, &stb) == 0)) {
2920 while (entry = getmntent(mtab)) {
2921 if (stat(entry->mnt_dir, &fsb) == 0
2922 && fsb.st_dev == stb.st_dev)
2924 /* found the filesystem */
2926 if (hasmntopt(entry, MNTOPT_NOSUID))
2929 } /* A single fs may well fail its stat(). */
2934 # endif /* getmntent+hasmntopt */
2937 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2940 #endif /* IAMSUID */
2943 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2949 /* do we need to emulate setuid on scripts? */
2951 /* This code is for those BSD systems that have setuid #! scripts disabled
2952 * in the kernel because of a security problem. Merely defining DOSUID
2953 * in perl will not fix that problem, but if you have disabled setuid
2954 * scripts in the kernel, this will attempt to emulate setuid and setgid
2955 * on scripts that have those now-otherwise-useless bits set. The setuid
2956 * root version must be called suidperl or sperlN.NNN. If regular perl
2957 * discovers that it has opened a setuid script, it calls suidperl with
2958 * the same argv that it had. If suidperl finds that the script it has
2959 * just opened is NOT setuid root, it sets the effective uid back to the
2960 * uid. We don't just make perl setuid root because that loses the
2961 * effective uid we had before invoking perl, if it was different from the
2964 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2965 * be defined in suidperl only. suidperl must be setuid root. The
2966 * Configure script will set this up for you if you want it.
2972 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2973 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2974 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2979 #ifndef HAS_SETREUID
2980 /* On this access check to make sure the directories are readable,
2981 * there is actually a small window that the user could use to make
2982 * filename point to an accessible directory. So there is a faint
2983 * chance that someone could execute a setuid script down in a
2984 * non-accessible directory. I don't know what to do about that.
2985 * But I don't think it's too important. The manual lies when
2986 * it says access() is useful in setuid programs.
2988 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2989 Perl_croak(aTHX_ "Permission denied");
2991 /* If we can swap euid and uid, then we can determine access rights
2992 * with a simple stat of the file, and then compare device and
2993 * inode to make sure we did stat() on the same file we opened.
2994 * Then we just have to make sure he or she can execute it.
2997 struct stat tmpstatbuf;
3001 setreuid(PL_euid,PL_uid) < 0
3004 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3007 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3008 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3009 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3010 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3011 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3012 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3013 Perl_croak(aTHX_ "Permission denied");
3015 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3016 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3017 (void)PerlIO_close(PL_rsfp);
3018 Perl_croak(aTHX_ "Permission denied\n");
3022 setreuid(PL_uid,PL_euid) < 0
3024 # if defined(HAS_SETRESUID)
3025 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3028 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3029 Perl_croak(aTHX_ "Can't reswap uid and euid");
3030 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3031 Perl_croak(aTHX_ "Permission denied\n");
3033 #endif /* HAS_SETREUID */
3034 #endif /* IAMSUID */
3036 if (!S_ISREG(PL_statbuf.st_mode))
3037 Perl_croak(aTHX_ "Permission denied");
3038 if (PL_statbuf.st_mode & S_IWOTH)
3039 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3040 PL_doswitches = FALSE; /* -s is insecure in suid */
3041 CopLINE_inc(PL_curcop);
3042 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3043 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3044 Perl_croak(aTHX_ "No #! line");
3045 s = SvPV(PL_linestr,n_a)+2;
3047 while (!isSPACE(*s)) s++;
3048 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3049 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3050 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3051 Perl_croak(aTHX_ "Not a perl script");
3052 while (*s == ' ' || *s == '\t') s++;
3054 * #! arg must be what we saw above. They can invoke it by
3055 * mentioning suidperl explicitly, but they may not add any strange
3056 * arguments beyond what #! says if they do invoke suidperl that way.
3058 len = strlen(validarg);
3059 if (strEQ(validarg," PHOOEY ") ||
3060 strnNE(s,validarg,len) || !isSPACE(s[len]))
3061 Perl_croak(aTHX_ "Args must match #! line");
3064 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3065 PL_euid == PL_statbuf.st_uid)
3067 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3068 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3069 #endif /* IAMSUID */
3071 if (PL_euid) { /* oops, we're not the setuid root perl */
3072 (void)PerlIO_close(PL_rsfp);
3075 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3076 (int)PERL_REVISION, (int)PERL_VERSION,
3077 (int)PERL_SUBVERSION), PL_origargv);
3079 Perl_croak(aTHX_ "Can't do setuid\n");
3082 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3084 (void)setegid(PL_statbuf.st_gid);
3087 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3089 #ifdef HAS_SETRESGID
3090 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3092 PerlProc_setgid(PL_statbuf.st_gid);
3096 if (PerlProc_getegid() != PL_statbuf.st_gid)
3097 Perl_croak(aTHX_ "Can't do setegid!\n");
3099 if (PL_statbuf.st_mode & S_ISUID) {
3100 if (PL_statbuf.st_uid != PL_euid)
3102 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3105 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3107 #ifdef HAS_SETRESUID
3108 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3110 PerlProc_setuid(PL_statbuf.st_uid);
3114 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3115 Perl_croak(aTHX_ "Can't do seteuid!\n");
3117 else if (PL_uid) { /* oops, mustn't run as root */
3119 (void)seteuid((Uid_t)PL_uid);
3122 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3124 #ifdef HAS_SETRESUID
3125 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3127 PerlProc_setuid((Uid_t)PL_uid);
3131 if (PerlProc_geteuid() != PL_uid)
3132 Perl_croak(aTHX_ "Can't do seteuid!\n");
3135 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3136 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3139 else if (PL_preprocess)
3140 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3141 else if (fdscript >= 0)
3142 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3144 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3146 /* We absolutely must clear out any saved ids here, so we */
3147 /* exec the real perl, substituting fd script for scriptname. */
3148 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3149 PerlIO_rewind(PL_rsfp);
3150 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3151 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3152 if (!PL_origargv[which])
3153 Perl_croak(aTHX_ "Permission denied");
3154 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3155 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3156 #if defined(HAS_FCNTL) && defined(F_SETFD)
3157 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3159 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3160 (int)PERL_REVISION, (int)PERL_VERSION,
3161 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3162 Perl_croak(aTHX_ "Can't do setuid\n");
3163 #endif /* IAMSUID */
3165 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3166 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3167 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3168 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3170 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3173 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3174 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3175 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3176 /* not set-id, must be wrapped */
3182 S_find_beginning(pTHX)
3184 register char *s, *s2;
3186 /* skip forward in input to the real script? */
3189 #ifdef MACOS_TRADITIONAL
3190 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3192 while (PL_doextract || gMacPerl_AlwaysExtract) {
3193 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3194 if (!gMacPerl_AlwaysExtract)
3195 Perl_croak(aTHX_ "No Perl script found in input\n");
3197 if (PL_doextract) /* require explicit override ? */
3198 if (!OverrideExtract(PL_origfilename))
3199 Perl_croak(aTHX_ "User aborted script\n");
3201 PL_doextract = FALSE;
3203 /* Pater peccavi, file does not have #! */
3204 PerlIO_rewind(PL_rsfp);
3209 while (PL_doextract) {
3210 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3211 Perl_croak(aTHX_ "No Perl script found in input\n");
3214 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3215 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3216 PL_doextract = FALSE;
3217 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3219 while (*s == ' ' || *s == '\t') s++;
3221 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3222 if (strnEQ(s2-4,"perl",4))
3224 while ((s = moreswitches(s)))
3227 #ifdef MACOS_TRADITIONAL
3238 PL_uid = PerlProc_getuid();
3239 PL_euid = PerlProc_geteuid();
3240 PL_gid = PerlProc_getgid();
3241 PL_egid = PerlProc_getegid();
3243 PL_uid |= PL_gid << 16;
3244 PL_euid |= PL_egid << 16;
3246 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3250 S_forbid_setid(pTHX_ char *s)
3252 if (PL_euid != PL_uid)
3253 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3254 if (PL_egid != PL_gid)
3255 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3259 Perl_init_debugger(pTHX)
3261 HV *ostash = PL_curstash;
3263 PL_curstash = PL_debstash;
3264 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3265 AvREAL_off(PL_dbargs);
3266 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3267 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3268 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3269 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3270 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3271 sv_setiv(PL_DBsingle, 0);
3272 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3273 sv_setiv(PL_DBtrace, 0);
3274 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3275 sv_setiv(PL_DBsignal, 0);
3276 PL_curstash = ostash;
3279 #ifndef STRESS_REALLOC
3280 #define REASONABLE(size) (size)
3282 #define REASONABLE(size) (1) /* unreasonable */
3286 Perl_init_stacks(pTHX)
3288 /* start with 128-item stack and 8K cxstack */
3289 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3290 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3291 PL_curstackinfo->si_type = PERLSI_MAIN;
3292 PL_curstack = PL_curstackinfo->si_stack;
3293 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3295 PL_stack_base = AvARRAY(PL_curstack);
3296 PL_stack_sp = PL_stack_base;
3297 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3299 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3302 PL_tmps_max = REASONABLE(128);
3304 New(54,PL_markstack,REASONABLE(32),I32);
3305 PL_markstack_ptr = PL_markstack;
3306 PL_markstack_max = PL_markstack + REASONABLE(32);
3310 New(54,PL_scopestack,REASONABLE(32),I32);
3311 PL_scopestack_ix = 0;
3312 PL_scopestack_max = REASONABLE(32);
3314 New(54,PL_savestack,REASONABLE(128),ANY);
3315 PL_savestack_ix = 0;
3316 PL_savestack_max = REASONABLE(128);
3318 New(54,PL_retstack,REASONABLE(16),OP*);
3320 PL_retstack_max = REASONABLE(16);
3328 while (PL_curstackinfo->si_next)
3329 PL_curstackinfo = PL_curstackinfo->si_next;
3330 while (PL_curstackinfo) {
3331 PERL_SI *p = PL_curstackinfo->si_prev;
3332 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3333 Safefree(PL_curstackinfo->si_cxstack);
3334 Safefree(PL_curstackinfo);
3335 PL_curstackinfo = p;
3337 Safefree(PL_tmps_stack);
3338 Safefree(PL_markstack);
3339 Safefree(PL_scopestack);
3340 Safefree(PL_savestack);
3341 Safefree(PL_retstack);
3345 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3356 lex_start(PL_linestr);
3358 PL_subname = newSVpvn("main",4);
3362 S_init_predump_symbols(pTHX)
3367 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3368 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3369 GvMULTI_on(PL_stdingv);
3370 io = GvIOp(PL_stdingv);
3371 IoTYPE(io) = IoTYPE_RDONLY;
3372 IoIFP(io) = PerlIO_stdin();
3373 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3375 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3377 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3380 IoTYPE(io) = IoTYPE_WRONLY;
3381 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3383 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3385 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3387 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3388 GvMULTI_on(PL_stderrgv);
3389 io = GvIOp(PL_stderrgv);
3390 IoTYPE(io) = IoTYPE_WRONLY;
3391 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3392 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3394 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3396 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3399 Safefree(PL_osname);
3400 PL_osname = savepv(OSNAME);
3404 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3409 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3410 char **dup_env_base = 0;
3411 int dup_env_count = 0;
3414 argc--,argv++; /* skip name of script */
3415 if (PL_doswitches) {
3416 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3419 if (argv[0][1] == '-' && !argv[0][2]) {
3423 if ((s = strchr(argv[0], '='))) {
3425 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3428 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3431 PL_toptarget = NEWSV(0,0);
3432 sv_upgrade(PL_toptarget, SVt_PVFM);
3433 sv_setpvn(PL_toptarget, "", 0);
3434 PL_bodytarget = NEWSV(0,0);
3435 sv_upgrade(PL_bodytarget, SVt_PVFM);
3436 sv_setpvn(PL_bodytarget, "", 0);
3437 PL_formtarget = PL_bodytarget;
3440 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3441 #ifdef MACOS_TRADITIONAL
3442 /* $0 is not majick on a Mac */
3443 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3445 sv_setpv(GvSV(tmpgv),PL_origfilename);
3446 magicname("0", "0", 1);
3449 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3451 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3453 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3455 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3456 GvMULTI_on(PL_argvgv);
3457 (void)gv_AVadd(PL_argvgv);
3458 av_clear(GvAVn(PL_argvgv));
3459 for (; argc > 0; argc--,argv++) {
3460 SV *sv = newSVpv(argv[0],0);
3461 av_push(GvAVn(PL_argvgv),sv);
3462 if (PL_widesyscalls)
3463 (void)sv_utf8_decode(sv);
3466 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3468 GvMULTI_on(PL_envgv);
3469 hv = GvHVn(PL_envgv);
3470 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3471 #ifdef USE_ENVIRON_ARRAY
3472 /* Note that if the supplied env parameter is actually a copy
3473 of the global environ then it may now point to free'd memory
3474 if the environment has been modified since. To avoid this
3475 problem we treat env==NULL as meaning 'use the default'
3480 environ[0] = Nullch;
3481 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3484 for (env_base = env; *env; env++)
3486 if ((dup_env_base = (char **)
3487 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3489 for (env = env_base, dup_env = dup_env_base;
3492 /* With environ one needs to use safesysmalloc(). */
3493 *dup_env = safesysmalloc(strlen(*env) + 1);
3494 (void)strcpy(*dup_env, *env);
3500 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3502 for (; *env; env++) {
3503 if (!(s = strchr(*env,'=')))
3509 sv = newSVpv(s--,0);
3510 (void)hv_store(hv, *env, s - *env, sv, 0);
3513 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3516 for (dup_env = dup_env_base; *dup_env; dup_env++)
3517 safesysfree(*dup_env);
3518 safesysfree(dup_env_base);
3520 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3521 #endif /* USE_ENVIRON_ARRAY */
3524 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3525 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3529 S_init_perllib(pTHX)
3534 s = PerlEnv_getenv("PERL5LIB");
3536 incpush(s, TRUE, TRUE);
3538 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3540 /* Treat PERL5?LIB as a possible search list logical name -- the
3541 * "natural" VMS idiom for a Unix path string. We allow each
3542 * element to be a set of |-separated directories for compatibility.
3546 if (my_trnlnm("PERL5LIB",buf,0))
3547 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3549 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3553 /* Use the ~-expanded versions of APPLLIB (undocumented),
3554 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3557 incpush(APPLLIB_EXP, TRUE, TRUE);
3561 incpush(ARCHLIB_EXP, FALSE, FALSE);
3563 #ifdef MACOS_TRADITIONAL
3565 struct stat tmpstatbuf;
3566 SV * privdir = NEWSV(55, 0);
3567 char * macperl = PerlEnv_getenv("MACPERL");
3572 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3573 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3574 incpush(SvPVX(privdir), TRUE, FALSE);
3575 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3576 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3577 incpush(SvPVX(privdir), TRUE, FALSE);
3579 SvREFCNT_dec(privdir);
3582 incpush(":", FALSE, FALSE);
3585 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3588 incpush(PRIVLIB_EXP, TRUE, FALSE);
3590 incpush(PRIVLIB_EXP, FALSE, FALSE);
3594 /* sitearch is always relative to sitelib on Windows for
3595 * DLL-based path intuition to work correctly */
3596 # if !defined(WIN32)
3597 incpush(SITEARCH_EXP, FALSE, FALSE);
3603 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3605 incpush(SITELIB_EXP, FALSE, FALSE);
3609 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3610 incpush(SITELIB_STEM, FALSE, TRUE);
3613 #ifdef PERL_VENDORARCH_EXP
3614 /* vendorarch is always relative to vendorlib on Windows for
3615 * DLL-based path intuition to work correctly */
3616 # if !defined(WIN32)
3617 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3621 #ifdef PERL_VENDORLIB_EXP
3623 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3625 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3629 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3630 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3633 #ifdef PERL_OTHERLIBDIRS
3634 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3638 incpush(".", FALSE, FALSE);
3639 #endif /* MACOS_TRADITIONAL */
3642 #if defined(DOSISH) || defined(EPOC)
3643 # define PERLLIB_SEP ';'
3646 # define PERLLIB_SEP '|'
3648 # if defined(MACOS_TRADITIONAL)
3649 # define PERLLIB_SEP ','
3651 # define PERLLIB_SEP ':'
3655 #ifndef PERLLIB_MANGLE
3656 # define PERLLIB_MANGLE(s,n) (s)
3660 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3662 SV *subdir = Nullsv;
3667 if (addsubdirs || addoldvers) {
3668 subdir = sv_newmortal();
3671 /* Break at all separators */
3673 SV *libdir = NEWSV(55,0);
3676 /* skip any consecutive separators */
3677 while ( *p == PERLLIB_SEP ) {
3678 /* Uncomment the next line for PATH semantics */
3679 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3683 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3684 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3689 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3690 p = Nullch; /* break out */
3692 #ifdef MACOS_TRADITIONAL
3693 if (!strchr(SvPVX(libdir), ':'))
3694 sv_insert(libdir, 0, 0, ":", 1);
3695 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3696 sv_catpv(libdir, ":");
3700 * BEFORE pushing libdir onto @INC we may first push version- and
3701 * archname-specific sub-directories.
3703 if (addsubdirs || addoldvers) {
3704 #ifdef PERL_INC_VERSION_LIST
3705 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3706 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3707 const char **incver;
3709 struct stat tmpstatbuf;
3714 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3716 while (unix[len-1] == '/') len--; /* Cosmetic */
3717 sv_usepvn(libdir,unix,len);
3720 PerlIO_printf(Perl_error_log,
3721 "Failed to unixify @INC element \"%s\"\n",
3725 #ifdef MACOS_TRADITIONAL
3726 #define PERL_AV_SUFFIX_FMT ""
3727 #define PERL_ARCH_FMT "%s:"
3728 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3730 #define PERL_AV_SUFFIX_FMT "/"
3731 #define PERL_ARCH_FMT "/%s"
3732 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3734 /* .../version/archname if -d .../version/archname */
3735 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3737 (int)PERL_REVISION, (int)PERL_VERSION,
3738 (int)PERL_SUBVERSION, ARCHNAME);
3739 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3740 S_ISDIR(tmpstatbuf.st_mode))
3741 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3743 /* .../version if -d .../version */
3744 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3745 (int)PERL_REVISION, (int)PERL_VERSION,
3746 (int)PERL_SUBVERSION);
3747 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3748 S_ISDIR(tmpstatbuf.st_mode))
3749 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3751 /* .../archname if -d .../archname */
3752 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3753 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3754 S_ISDIR(tmpstatbuf.st_mode))
3755 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3758 #ifdef PERL_INC_VERSION_LIST
3760 for (incver = incverlist; *incver; incver++) {
3761 /* .../xxx if -d .../xxx */
3762 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3763 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3764 S_ISDIR(tmpstatbuf.st_mode))
3765 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3771 /* finally push this lib directory on the end of @INC */
3772 av_push(GvAVn(PL_incgv), libdir);
3777 STATIC struct perl_thread *
3778 S_init_main_thread(pTHX)
3780 #if !defined(PERL_IMPLICIT_CONTEXT)
3781 struct perl_thread *thr;
3785 Newz(53, thr, 1, struct perl_thread);
3786 PL_curcop = &PL_compiling;
3787 thr->interp = PERL_GET_INTERP;
3788 thr->cvcache = newHV();
3789 thr->threadsv = newAV();
3790 /* thr->threadsvp is set when find_threadsv is called */
3791 thr->specific = newAV();
3792 thr->flags = THRf_R_JOINABLE;
3793 MUTEX_INIT(&thr->mutex);
3794 /* Handcraft thrsv similarly to mess_sv */
3795 New(53, PL_thrsv, 1, SV);
3796 Newz(53, xpv, 1, XPV);
3797 SvFLAGS(PL_thrsv) = SVt_PV;
3798 SvANY(PL_thrsv) = (void*)xpv;
3799 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3800 SvPVX(PL_thrsv) = (char*)thr;
3801 SvCUR_set(PL_thrsv, sizeof(thr));
3802 SvLEN_set(PL_thrsv, sizeof(thr));
3803 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3804 thr->oursv = PL_thrsv;
3805 PL_chopset = " \n-";
3808 MUTEX_LOCK(&PL_threads_mutex);
3814 MUTEX_UNLOCK(&PL_threads_mutex);
3816 #ifdef HAVE_THREAD_INTERN
3817 Perl_init_thread_intern(thr);
3820 #ifdef SET_THREAD_SELF
3821 SET_THREAD_SELF(thr);
3823 thr->self = pthread_self();
3824 #endif /* SET_THREAD_SELF */
3828 * These must come after the thread self setting
3829 * because sv_setpvn does SvTAINT and the taint
3830 * fields thread selfness being set.
3832 PL_toptarget = NEWSV(0,0);
3833 sv_upgrade(PL_toptarget, SVt_PVFM);
3834 sv_setpvn(PL_toptarget, "", 0);
3835 PL_bodytarget = NEWSV(0,0);
3836 sv_upgrade(PL_bodytarget, SVt_PVFM);
3837 sv_setpvn(PL_bodytarget, "", 0);
3838 PL_formtarget = PL_bodytarget;
3839 thr->errsv = newSVpvn("", 0);
3840 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3843 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3844 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3845 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3846 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3847 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3848 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3850 PL_reginterp_cnt = 0;
3854 #endif /* USE_THREADS */
3857 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3860 line_t oldline = CopLINE(PL_curcop);
3866 while (AvFILL(paramList) >= 0) {
3867 cv = (CV*)av_shift(paramList);
3868 if (PL_savebegin && (paramList == PL_beginav)) {
3869 /* save PL_beginav for compiler */
3870 if (! PL_beginav_save)
3871 PL_beginav_save = newAV();
3872 av_push(PL_beginav_save, (SV*)cv);
3876 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3877 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3883 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3887 (void)SvPV(atsv, len);
3890 PL_curcop = &PL_compiling;
3891 CopLINE_set(PL_curcop, oldline);
3892 if (paramList == PL_beginav)
3893 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3895 Perl_sv_catpvf(aTHX_ atsv,
3896 "%s failed--call queue aborted",
3897 paramList == PL_checkav ? "CHECK"
3898 : paramList == PL_initav ? "INIT"
3900 while (PL_scopestack_ix > oldscope)
3903 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3910 /* my_exit() was called */
3911 while (PL_scopestack_ix > oldscope)
3914 PL_curstash = PL_defstash;
3915 PL_curcop = &PL_compiling;
3916 CopLINE_set(PL_curcop, oldline);
3918 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3919 if (paramList == PL_beginav)
3920 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3922 Perl_croak(aTHX_ "%s failed--call queue aborted",
3923 paramList == PL_checkav ? "CHECK"
3924 : paramList == PL_initav ? "INIT"
3931 PL_curcop = &PL_compiling;
3932 CopLINE_set(PL_curcop, oldline);
3935 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3943 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3945 S_vcall_list_body(pTHX_ va_list args)
3947 CV *cv = va_arg(args, CV*);
3948 return call_list_body(cv);
3953 S_call_list_body(pTHX_ CV *cv)
3955 PUSHMARK(PL_stack_sp);
3956 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3961 Perl_my_exit(pTHX_ U32 status)
3963 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3964 thr, (unsigned long) status));
3973 STATUS_NATIVE_SET(status);
3980 Perl_my_failure_exit(pTHX)
3983 if (vaxc$errno & 1) {
3984 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3985 STATUS_NATIVE_SET(44);
3988 if (!vaxc$errno && errno) /* unlikely */
3989 STATUS_NATIVE_SET(44);
3991 STATUS_NATIVE_SET(vaxc$errno);
3996 STATUS_POSIX_SET(errno);
3998 exitstatus = STATUS_POSIX >> 8;
3999 if (exitstatus & 255)
4000 STATUS_POSIX_SET(exitstatus);
4002 STATUS_POSIX_SET(255);
4009 S_my_exit_jump(pTHX)
4011 register PERL_CONTEXT *cx;
4016 SvREFCNT_dec(PL_e_script);
4017 PL_e_script = Nullsv;
4020 POPSTACK_TO(PL_mainstack);
4021 if (cxstack_ix >= 0) {
4024 POPBLOCK(cx,PL_curpm);
4036 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
4039 p = SvPVX(PL_e_script);
4040 nl = strchr(p, '\n');
4041 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4043 filter_del(read_e_script);
4046 sv_catpvn(buf_sv, p, nl-p);
4047 sv_chop(PL_e_script, nl);