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)
404 /* We must account for everything. */
406 /* Destroy the main CV and syntax tree */
408 PL_curpad = AvARRAY(PL_comppad);
409 op_free(PL_main_root);
410 PL_main_root = Nullop;
412 PL_curcop = &PL_compiling;
413 PL_main_start = Nullop;
414 SvREFCNT_dec(PL_main_cv);
418 /* Tell PerlIO we are about to tear things apart in case
419 we have layers which are using resources that should
423 PerlIO_destruct(aTHX);
425 if (PL_sv_objcount) {
427 * Try to destruct global references. We do this first so that the
428 * destructors and destructees still exist. Some sv's might remain.
429 * Non-referenced objects are on their own.
434 /* unhook hooks which will soon be, or use, destroyed data */
435 SvREFCNT_dec(PL_warnhook);
436 PL_warnhook = Nullsv;
437 SvREFCNT_dec(PL_diehook);
440 /* call exit list functions */
441 while (PL_exitlistlen-- > 0)
442 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
444 Safefree(PL_exitlist);
446 if (destruct_level == 0){
448 DEBUG_P(debprofdump());
450 /* The exit() function will do everything that needs doing. */
454 /* jettison our possibly duplicated environment */
456 #ifdef USE_ENVIRON_ARRAY
457 if (environ != PL_origenviron) {
460 for (i = 0; environ[i]; i++)
461 safesysfree(environ[i]);
462 /* Must use safesysfree() when working with environ. */
463 safesysfree(environ);
465 environ = PL_origenviron;
470 /* the syntax tree is shared between clones
471 * so op_free(PL_main_root) only ReREFCNT_dec's
472 * REGEXPs in the parent interpreter
473 * we need to manually ReREFCNT_dec for the clones
476 I32 i = AvFILLp(PL_regex_padav) + 1;
477 SV **ary = AvARRAY(PL_regex_padav);
480 REGEXP *re = (REGEXP *)SvIVX(ary[--i]);
481 if (re && (re->refcnt > 0)) {
486 SvREFCNT_dec(PL_regex_padav);
487 PL_regex_padav = Nullav;
491 /* loosen bonds of global variables */
494 (void)PerlIO_close(PL_rsfp);
498 /* Filters for program text */
499 SvREFCNT_dec(PL_rsfp_filters);
500 PL_rsfp_filters = Nullav;
503 PL_preprocess = FALSE;
509 PL_doswitches = FALSE;
510 PL_dowarn = G_WARN_OFF;
511 PL_doextract = FALSE;
512 PL_sawampersand = FALSE; /* must save all match strings */
515 Safefree(PL_inplace);
517 SvREFCNT_dec(PL_patchlevel);
520 SvREFCNT_dec(PL_e_script);
521 PL_e_script = Nullsv;
524 while (--PL_origargc >= 0) {
525 Safefree(PL_origargv[PL_origargc]);
527 Safefree(PL_origargv);
529 /* magical thingies */
531 SvREFCNT_dec(PL_ofs_sv); /* $, */
534 SvREFCNT_dec(PL_ors_sv); /* $\ */
537 SvREFCNT_dec(PL_rs); /* $/ */
540 SvREFCNT_dec(PL_nrs); /* $/ helper */
543 PL_multiline = 0; /* $* */
544 Safefree(PL_osname); /* $^O */
547 SvREFCNT_dec(PL_statname);
548 PL_statname = Nullsv;
551 /* defgv, aka *_ should be taken care of elsewhere */
553 /* clean up after study() */
554 SvREFCNT_dec(PL_lastscream);
555 PL_lastscream = Nullsv;
556 Safefree(PL_screamfirst);
558 Safefree(PL_screamnext);
562 Safefree(PL_efloatbuf);
563 PL_efloatbuf = Nullch;
566 /* startup and shutdown function lists */
567 SvREFCNT_dec(PL_beginav);
568 SvREFCNT_dec(PL_endav);
569 SvREFCNT_dec(PL_checkav);
570 SvREFCNT_dec(PL_initav);
576 /* shortcuts just get cleared */
582 PL_argvoutgv = Nullgv;
584 PL_stderrgv = Nullgv;
585 PL_last_in_gv = Nullgv;
587 PL_debstash = Nullhv;
589 /* reset so print() ends up where we expect */
592 SvREFCNT_dec(PL_argvout_stack);
593 PL_argvout_stack = Nullav;
595 SvREFCNT_dec(PL_modglobal);
596 PL_modglobal = Nullhv;
597 SvREFCNT_dec(PL_preambleav);
598 PL_preambleav = Nullav;
599 SvREFCNT_dec(PL_subname);
601 SvREFCNT_dec(PL_linestr);
603 SvREFCNT_dec(PL_pidstatus);
604 PL_pidstatus = Nullhv;
605 SvREFCNT_dec(PL_toptarget);
606 PL_toptarget = Nullsv;
607 SvREFCNT_dec(PL_bodytarget);
608 PL_bodytarget = Nullsv;
609 PL_formtarget = Nullsv;
611 /* free locale stuff */
612 #ifdef USE_LOCALE_COLLATE
613 Safefree(PL_collation_name);
614 PL_collation_name = Nullch;
617 #ifdef USE_LOCALE_NUMERIC
618 Safefree(PL_numeric_name);
619 PL_numeric_name = Nullch;
620 SvREFCNT_dec(PL_numeric_radix_sv);
623 /* clear utf8 character classes */
624 SvREFCNT_dec(PL_utf8_alnum);
625 SvREFCNT_dec(PL_utf8_alnumc);
626 SvREFCNT_dec(PL_utf8_ascii);
627 SvREFCNT_dec(PL_utf8_alpha);
628 SvREFCNT_dec(PL_utf8_space);
629 SvREFCNT_dec(PL_utf8_cntrl);
630 SvREFCNT_dec(PL_utf8_graph);
631 SvREFCNT_dec(PL_utf8_digit);
632 SvREFCNT_dec(PL_utf8_upper);
633 SvREFCNT_dec(PL_utf8_lower);
634 SvREFCNT_dec(PL_utf8_print);
635 SvREFCNT_dec(PL_utf8_punct);
636 SvREFCNT_dec(PL_utf8_xdigit);
637 SvREFCNT_dec(PL_utf8_mark);
638 SvREFCNT_dec(PL_utf8_toupper);
639 SvREFCNT_dec(PL_utf8_tolower);
640 PL_utf8_alnum = Nullsv;
641 PL_utf8_alnumc = Nullsv;
642 PL_utf8_ascii = Nullsv;
643 PL_utf8_alpha = Nullsv;
644 PL_utf8_space = Nullsv;
645 PL_utf8_cntrl = Nullsv;
646 PL_utf8_graph = Nullsv;
647 PL_utf8_digit = Nullsv;
648 PL_utf8_upper = Nullsv;
649 PL_utf8_lower = Nullsv;
650 PL_utf8_print = Nullsv;
651 PL_utf8_punct = Nullsv;
652 PL_utf8_xdigit = Nullsv;
653 PL_utf8_mark = Nullsv;
654 PL_utf8_toupper = Nullsv;
655 PL_utf8_totitle = Nullsv;
656 PL_utf8_tolower = Nullsv;
658 if (!specialWARN(PL_compiling.cop_warnings))
659 SvREFCNT_dec(PL_compiling.cop_warnings);
660 PL_compiling.cop_warnings = Nullsv;
661 if (!specialCopIO(PL_compiling.cop_io))
662 SvREFCNT_dec(PL_compiling.cop_io);
663 PL_compiling.cop_io = Nullsv;
665 Safefree(CopFILE(&PL_compiling));
666 CopFILE(&PL_compiling) = Nullch;
667 Safefree(CopSTASHPV(&PL_compiling));
669 SvREFCNT_dec(CopFILEGV(&PL_compiling));
670 CopFILEGV(&PL_compiling) = Nullgv;
671 /* cop_stash is not refcounted */
674 /* Prepare to destruct main symbol table. */
679 SvREFCNT_dec(PL_curstname);
680 PL_curstname = Nullsv;
682 /* clear queued errors */
683 SvREFCNT_dec(PL_errors);
687 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
688 if (PL_scopestack_ix != 0)
689 Perl_warner(aTHX_ WARN_INTERNAL,
690 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
691 (long)PL_scopestack_ix);
692 if (PL_savestack_ix != 0)
693 Perl_warner(aTHX_ WARN_INTERNAL,
694 "Unbalanced saves: %ld more saves than restores\n",
695 (long)PL_savestack_ix);
696 if (PL_tmps_floor != -1)
697 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
698 (long)PL_tmps_floor + 1);
699 if (cxstack_ix != -1)
700 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
701 (long)cxstack_ix + 1);
704 /* Now absolutely destruct everything, somehow or other, loops or no. */
705 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
706 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
708 /* the 2 is for PL_fdpid and PL_strtab */
709 while (PL_sv_count > 2 && sv_clean_all())
712 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
713 SvFLAGS(PL_fdpid) |= SVt_PVAV;
714 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
715 SvFLAGS(PL_strtab) |= SVt_PVHV;
717 AvREAL_off(PL_fdpid); /* no surviving entries */
718 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
721 #ifdef HAVE_INTERP_INTERN
725 /* Destruct the global string table. */
727 /* Yell and reset the HeVAL() slots that are still holding refcounts,
728 * so that sv_free() won't fail on them.
736 max = HvMAX(PL_strtab);
737 array = HvARRAY(PL_strtab);
740 if (hent && ckWARN_d(WARN_INTERNAL)) {
741 Perl_warner(aTHX_ WARN_INTERNAL,
742 "Unbalanced string table refcount: (%d) for \"%s\"",
743 HeVAL(hent) - Nullsv, HeKEY(hent));
744 HeVAL(hent) = Nullsv;
754 SvREFCNT_dec(PL_strtab);
757 /* free the pointer table used for cloning */
758 ptr_table_free(PL_ptr_table);
761 /* free special SVs */
763 SvREFCNT(&PL_sv_yes) = 0;
764 sv_clear(&PL_sv_yes);
765 SvANY(&PL_sv_yes) = NULL;
766 SvFLAGS(&PL_sv_yes) = 0;
768 SvREFCNT(&PL_sv_no) = 0;
770 SvANY(&PL_sv_no) = NULL;
771 SvFLAGS(&PL_sv_no) = 0;
773 SvREFCNT(&PL_sv_undef) = 0;
774 SvREADONLY_off(&PL_sv_undef);
776 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
777 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
779 Safefree(PL_origfilename);
780 Safefree(PL_reg_start_tmp);
782 Safefree(PL_reg_curpm);
783 Safefree(PL_reg_poscache);
784 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
785 Safefree(PL_op_mask);
786 Safefree(PL_psig_ptr);
787 Safefree(PL_psig_name);
788 Safefree(PL_bitcount);
789 Safefree(PL_psig_pend);
791 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
793 DEBUG_P(debprofdump());
795 MUTEX_DESTROY(&PL_strtab_mutex);
796 MUTEX_DESTROY(&PL_sv_mutex);
797 MUTEX_DESTROY(&PL_eval_mutex);
798 MUTEX_DESTROY(&PL_cred_mutex);
799 MUTEX_DESTROY(&PL_fdpid_mutex);
800 COND_DESTROY(&PL_eval_cond);
801 #ifdef EMULATE_ATOMIC_REFCOUNTS
802 MUTEX_DESTROY(&PL_svref_mutex);
803 #endif /* EMULATE_ATOMIC_REFCOUNTS */
805 /* As the penultimate thing, free the non-arena SV for thrsv */
806 Safefree(SvPVX(PL_thrsv));
807 Safefree(SvANY(PL_thrsv));
810 #endif /* USE_THREADS */
812 #ifdef USE_REENTRANT_API
813 Safefree(PL_reentrant_buffer->tmbuff);
814 Safefree(PL_reentrant_buffer);
819 /* As the absolutely last thing, free the non-arena SV for mess() */
822 /* it could have accumulated taint magic */
823 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
826 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
827 moremagic = mg->mg_moremagic;
828 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
830 Safefree(mg->mg_ptr);
834 /* we know that type >= SVt_PV */
835 (void)SvOOK_off(PL_mess_sv);
836 Safefree(SvPVX(PL_mess_sv));
837 Safefree(SvANY(PL_mess_sv));
838 Safefree(PL_mess_sv);
844 =for apidoc perl_free
846 Releases a Perl interpreter. See L<perlembed>.
854 #if defined(PERL_OBJECT)
857 # if defined(WIN32) || defined(NETWARE)
858 # if defined(PERL_IMPLICIT_SYS)
860 void *host = nw_internal_host;
862 void *host = w32_internal_host;
865 if (PerlProc_lasthost()) {
871 nw5_delete_internal_host(host);
873 win32_delete_internal_host(host);
886 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
888 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
889 PL_exitlist[PL_exitlistlen].fn = fn;
890 PL_exitlist[PL_exitlistlen].ptr = ptr;
895 =for apidoc perl_parse
897 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
903 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
912 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
915 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
916 setuid perl scripts securely.\n");
920 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
921 _dyld_lookup_and_bind
922 ("__environ", (unsigned long *) &environ_pointer, NULL);
927 /* we copy rather than point to argv
928 * since perl_clone will copy and perl_destruct
929 * has no way of knowing if we've made a copy or
933 New(0, PL_origargv, i+1, char*);
934 PL_origargv[i] = '\0';
936 PL_origargv[i] = savepv(argv[i]);
940 #ifdef USE_ENVIRON_ARRAY
941 PL_origenviron = environ;
946 /* Come here if running an undumped a.out. */
948 PL_origfilename = savepv(argv[0]);
949 PL_do_undump = FALSE;
950 cxstack_ix = -1; /* start label stack again */
952 init_postdump_symbols(argc,argv,env);
957 PL_curpad = AvARRAY(PL_comppad);
958 op_free(PL_main_root);
959 PL_main_root = Nullop;
961 PL_main_start = Nullop;
962 SvREFCNT_dec(PL_main_cv);
966 oldscope = PL_scopestack_ix;
967 PL_dowarn = G_WARN_OFF;
969 #ifdef PERL_FLEXIBLE_EXCEPTIONS
970 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
976 #ifndef PERL_FLEXIBLE_EXCEPTIONS
977 parse_body(env,xsinit);
980 call_list(oldscope, PL_checkav);
987 /* my_exit() was called */
988 while (PL_scopestack_ix > oldscope)
991 PL_curstash = PL_defstash;
993 call_list(oldscope, PL_checkav);
994 ret = STATUS_NATIVE_EXPORT;
997 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1005 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1007 S_vparse_body(pTHX_ va_list args)
1009 char **env = va_arg(args, char**);
1010 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1012 return parse_body(env, xsinit);
1017 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1019 int argc = PL_origargc;
1020 char **argv = PL_origargv;
1021 char *scriptname = NULL;
1023 VOL bool dosearch = FALSE;
1024 char *validarg = "";
1028 char *popts, *cddir = Nullch;
1030 sv_setpvn(PL_linestr,"",0);
1031 sv = newSVpvn("",0); /* first used for -I flags */
1035 for (argc--,argv++; argc > 0; argc--,argv++) {
1036 if (argv[0][0] != '-' || !argv[0][1])
1040 validarg = " PHOOEY ";
1049 win32_argv2utf8(argc-1, argv+1);
1052 #ifndef PERL_STRICT_CR
1076 if ((s = moreswitches(s)))
1086 #ifdef MACOS_TRADITIONAL
1087 /* ignore -e for Dev:Pseudo argument */
1088 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1091 if (PL_euid != PL_uid || PL_egid != PL_gid)
1092 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1094 PL_e_script = newSVpvn("",0);
1095 filter_add(read_e_script, NULL);
1098 sv_catpv(PL_e_script, s);
1100 sv_catpv(PL_e_script, argv[1]);
1104 Perl_croak(aTHX_ "No code specified for -e");
1105 sv_catpv(PL_e_script, "\n");
1108 case 'I': /* -I handled both here and in moreswitches() */
1110 if (!*++s && (s=argv[1]) != Nullch) {
1115 STRLEN len = strlen(s);
1116 p = savepvn(s, len);
1117 incpush(p, TRUE, TRUE);
1118 sv_catpvn(sv, "-I", 2);
1119 sv_catpvn(sv, p, len);
1120 sv_catpvn(sv, " ", 1);
1124 Perl_croak(aTHX_ "No directory specified for -I");
1128 PL_preprocess = TRUE;
1138 PL_preambleav = newAV();
1139 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1141 PL_Sv = newSVpv("print myconfig();",0);
1143 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1145 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1147 sv_catpv(PL_Sv,"\" Compile-time options:");
1149 sv_catpv(PL_Sv," DEBUGGING");
1151 # ifdef MULTIPLICITY
1152 sv_catpv(PL_Sv," MULTIPLICITY");
1155 sv_catpv(PL_Sv," USE_THREADS");
1157 # ifdef USE_ITHREADS
1158 sv_catpv(PL_Sv," USE_ITHREADS");
1160 # ifdef USE_64_BIT_INT
1161 sv_catpv(PL_Sv," USE_64_BIT_INT");
1163 # ifdef USE_64_BIT_ALL
1164 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1166 # ifdef USE_LONG_DOUBLE
1167 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1169 # ifdef USE_LARGE_FILES
1170 sv_catpv(PL_Sv," USE_LARGE_FILES");
1173 sv_catpv(PL_Sv," USE_SOCKS");
1176 sv_catpv(PL_Sv," PERL_OBJECT");
1178 # ifdef PERL_IMPLICIT_CONTEXT
1179 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1181 # ifdef PERL_IMPLICIT_SYS
1182 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1184 sv_catpv(PL_Sv,"\\n\",");
1186 #if defined(LOCAL_PATCH_COUNT)
1187 if (LOCAL_PATCH_COUNT > 0) {
1189 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1190 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1191 if (PL_localpatches[i])
1192 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1196 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1199 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1201 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1204 sv_catpv(PL_Sv, "; \
1206 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1209 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1212 print \" \\%ENV:\\n @env\\n\" if @env; \
1213 print \" \\@INC:\\n @INC\\n\";");
1216 PL_Sv = newSVpv("config_vars(qw(",0);
1217 sv_catpv(PL_Sv, ++s);
1218 sv_catpv(PL_Sv, "))");
1221 av_push(PL_preambleav, PL_Sv);
1222 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1225 PL_doextract = TRUE;
1233 if (!*++s || isSPACE(*s)) {
1237 /* catch use of gnu style long options */
1238 if (strEQ(s, "version")) {
1242 if (strEQ(s, "help")) {
1249 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1255 #ifndef SECURE_INTERNAL_GETENV
1258 (popts = PerlEnv_getenv("PERL5OPT")))
1263 if (*s == '-' && *(s+1) == 'T')
1278 if (!strchr("DIMUdmw", *s))
1279 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1292 scriptname = argv[0];
1295 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1297 else if (scriptname == Nullch) {
1299 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1307 open_script(scriptname,dosearch,sv,&fdscript);
1309 validate_suid(validarg, scriptname,fdscript);
1312 #if defined(SIGCHLD) || defined(SIGCLD)
1315 # define SIGCHLD SIGCLD
1317 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1318 if (sigstate == SIG_IGN) {
1319 if (ckWARN(WARN_SIGNAL))
1320 Perl_warner(aTHX_ WARN_SIGNAL,
1321 "Can't ignore signal CHLD, forcing to default");
1322 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1328 #ifdef MACOS_TRADITIONAL
1329 if (PL_doextract || gMacPerl_AlwaysExtract) {
1334 if (cddir && PerlDir_chdir(cddir) < 0)
1335 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1339 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1340 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1341 CvUNIQUE_on(PL_compcv);
1343 PL_comppad = newAV();
1344 av_push(PL_comppad, Nullsv);
1345 PL_curpad = AvARRAY(PL_comppad);
1346 PL_comppad_name = newAV();
1347 PL_comppad_name_fill = 0;
1348 PL_min_intro_pending = 0;
1351 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1352 PL_curpad[0] = (SV*)newAV();
1353 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1354 CvOWNER(PL_compcv) = 0;
1355 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1356 MUTEX_INIT(CvMUTEXP(PL_compcv));
1357 #endif /* USE_THREADS */
1359 comppadlist = newAV();
1360 AvREAL_off(comppadlist);
1361 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1362 av_store(comppadlist, 1, (SV*)PL_comppad);
1363 CvPADLIST(PL_compcv) = comppadlist;
1366 boot_core_UNIVERSAL();
1368 boot_core_xsutils();
1372 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1374 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1380 # ifdef HAS_SOCKS5_INIT
1381 socks5_init(argv[0]);
1387 init_predump_symbols();
1388 /* init_postdump_symbols not currently designed to be called */
1389 /* more than once (ENV isn't cleared first, for example) */
1390 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1392 init_postdump_symbols(argc,argv,env);
1396 /* now parse the script */
1398 SETERRNO(0,SS$_NORMAL);
1400 #ifdef MACOS_TRADITIONAL
1401 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1403 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1405 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1406 MacPerl_MPWFileName(PL_origfilename));
1410 if (yyparse() || PL_error_count) {
1412 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1414 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1419 CopLINE_set(PL_curcop, 0);
1420 PL_curstash = PL_defstash;
1421 PL_preprocess = FALSE;
1423 SvREFCNT_dec(PL_e_script);
1424 PL_e_script = Nullsv;
1427 /* now that script is parsed, we can modify record separator */
1428 SvREFCNT_dec(PL_rs);
1429 PL_rs = SvREFCNT_inc(PL_nrs);
1430 sv_setsv(get_sv("/", TRUE), PL_rs);
1435 SAVECOPFILE(PL_curcop);
1436 SAVECOPLINE(PL_curcop);
1437 gv_check(PL_defstash);
1444 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1445 dump_mstats("after compilation:");
1454 =for apidoc perl_run
1456 Tells a Perl interpreter to run. See L<perlembed>.
1471 oldscope = PL_scopestack_ix;
1473 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1475 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1481 cxstack_ix = -1; /* start context stack again */
1483 case 0: /* normal completion */
1484 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1489 case 2: /* my_exit() */
1490 while (PL_scopestack_ix > oldscope)
1493 PL_curstash = PL_defstash;
1494 if (PL_endav && !PL_minus_c)
1495 call_list(oldscope, PL_endav);
1497 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1498 dump_mstats("after execution: ");
1500 ret = STATUS_NATIVE_EXPORT;
1504 POPSTACK_TO(PL_mainstack);
1507 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1517 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1519 S_vrun_body(pTHX_ va_list args)
1521 I32 oldscope = va_arg(args, I32);
1523 return run_body(oldscope);
1529 S_run_body(pTHX_ I32 oldscope)
1531 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1532 PL_sawampersand ? "Enabling" : "Omitting"));
1534 if (!PL_restartop) {
1535 DEBUG_x(dump_all());
1536 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1537 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1541 #ifdef MACOS_TRADITIONAL
1542 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1544 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1548 if (PERLDB_SINGLE && PL_DBsingle)
1549 sv_setiv(PL_DBsingle, 1);
1551 call_list(oldscope, PL_initav);
1557 PL_op = PL_restartop;
1561 else if (PL_main_start) {
1562 CvDEPTH(PL_main_cv) = 1;
1563 PL_op = PL_main_start;
1573 =for apidoc p||get_sv
1575 Returns the SV of the specified Perl scalar. If C<create> is set and the
1576 Perl variable does not exist then it will be created. If C<create> is not
1577 set and the variable does not exist then NULL is returned.
1583 Perl_get_sv(pTHX_ const char *name, I32 create)
1587 if (name[1] == '\0' && !isALPHA(name[0])) {
1588 PADOFFSET tmp = find_threadsv(name);
1589 if (tmp != NOT_IN_PAD)
1590 return THREADSV(tmp);
1592 #endif /* USE_THREADS */
1593 gv = gv_fetchpv(name, create, SVt_PV);
1600 =for apidoc p||get_av
1602 Returns the AV of the specified Perl array. If C<create> is set and the
1603 Perl variable does not exist then it will be created. If C<create> is not
1604 set and the variable does not exist then NULL is returned.
1610 Perl_get_av(pTHX_ const char *name, I32 create)
1612 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1621 =for apidoc p||get_hv
1623 Returns the HV of the specified Perl hash. If C<create> is set and the
1624 Perl variable does not exist then it will be created. If C<create> is not
1625 set and the variable does not exist then NULL is returned.
1631 Perl_get_hv(pTHX_ const char *name, I32 create)
1633 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1642 =for apidoc p||get_cv
1644 Returns the CV of the specified Perl subroutine. If C<create> is set and
1645 the Perl subroutine does not exist then it will be declared (which has the
1646 same effect as saying C<sub name;>). If C<create> is not set and the
1647 subroutine does not exist then NULL is returned.
1653 Perl_get_cv(pTHX_ const char *name, I32 create)
1655 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1656 /* XXX unsafe for threads if eval_owner isn't held */
1657 /* XXX this is probably not what they think they're getting.
1658 * It has the same effect as "sub name;", i.e. just a forward
1660 if (create && !GvCVu(gv))
1661 return newSUB(start_subparse(FALSE, 0),
1662 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1670 /* Be sure to refetch the stack pointer after calling these routines. */
1673 =for apidoc p||call_argv
1675 Performs a callback to the specified Perl sub. See L<perlcall>.
1681 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1683 /* See G_* flags in cop.h */
1684 /* null terminated arg list */
1691 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1696 return call_pv(sub_name, flags);
1700 =for apidoc p||call_pv
1702 Performs a callback to the specified Perl sub. See L<perlcall>.
1708 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1709 /* name of the subroutine */
1710 /* See G_* flags in cop.h */
1712 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1716 =for apidoc p||call_method
1718 Performs a callback to the specified Perl method. The blessed object must
1719 be on the stack. See L<perlcall>.
1725 Perl_call_method(pTHX_ const char *methname, I32 flags)
1726 /* name of the subroutine */
1727 /* See G_* flags in cop.h */
1729 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1732 /* May be called with any of a CV, a GV, or an SV containing the name. */
1734 =for apidoc p||call_sv
1736 Performs a callback to the Perl sub whose name is in the SV. See
1743 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1744 /* See G_* flags in cop.h */
1747 LOGOP myop; /* fake syntax tree node */
1750 volatile I32 retval = 0;
1752 bool oldcatch = CATCH_GET;
1757 if (flags & G_DISCARD) {
1762 Zero(&myop, 1, LOGOP);
1763 myop.op_next = Nullop;
1764 if (!(flags & G_NOARGS))
1765 myop.op_flags |= OPf_STACKED;
1766 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1767 (flags & G_ARRAY) ? OPf_WANT_LIST :
1772 EXTEND(PL_stack_sp, 1);
1773 *++PL_stack_sp = sv;
1775 oldscope = PL_scopestack_ix;
1777 if (PERLDB_SUB && PL_curstash != PL_debstash
1778 /* Handle first BEGIN of -d. */
1779 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1780 /* Try harder, since this may have been a sighandler, thus
1781 * curstash may be meaningless. */
1782 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1783 && !(flags & G_NODEBUG))
1784 PL_op->op_private |= OPpENTERSUB_DB;
1786 if (flags & G_METHOD) {
1787 Zero(&method_op, 1, UNOP);
1788 method_op.op_next = PL_op;
1789 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1790 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1791 PL_op = (OP*)&method_op;
1794 if (!(flags & G_EVAL)) {
1796 call_body((OP*)&myop, FALSE);
1797 retval = PL_stack_sp - (PL_stack_base + oldmark);
1798 CATCH_SET(oldcatch);
1801 myop.op_other = (OP*)&myop;
1803 /* we're trying to emulate pp_entertry() here */
1805 register PERL_CONTEXT *cx;
1806 I32 gimme = GIMME_V;
1811 push_return(Nullop);
1812 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1814 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1816 PL_in_eval = EVAL_INEVAL;
1817 if (flags & G_KEEPERR)
1818 PL_in_eval |= EVAL_KEEPERR;
1824 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1826 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1833 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1835 call_body((OP*)&myop, FALSE);
1837 retval = PL_stack_sp - (PL_stack_base + oldmark);
1838 if (!(flags & G_KEEPERR))
1845 /* my_exit() was called */
1846 PL_curstash = PL_defstash;
1849 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1850 Perl_croak(aTHX_ "Callback called exit");
1855 PL_op = PL_restartop;
1859 PL_stack_sp = PL_stack_base + oldmark;
1860 if (flags & G_ARRAY)
1864 *++PL_stack_sp = &PL_sv_undef;
1869 if (PL_scopestack_ix > oldscope) {
1873 register PERL_CONTEXT *cx;
1885 if (flags & G_DISCARD) {
1886 PL_stack_sp = PL_stack_base + oldmark;
1895 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1897 S_vcall_body(pTHX_ va_list args)
1899 OP *myop = va_arg(args, OP*);
1900 int is_eval = va_arg(args, int);
1902 call_body(myop, is_eval);
1908 S_call_body(pTHX_ OP *myop, int is_eval)
1910 if (PL_op == myop) {
1912 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1914 PL_op = Perl_pp_entersub(aTHX); /* this does */
1920 /* Eval a string. The G_EVAL flag is always assumed. */
1923 =for apidoc p||eval_sv
1925 Tells Perl to C<eval> the string in the SV.
1931 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1933 /* See G_* flags in cop.h */
1936 UNOP myop; /* fake syntax tree node */
1937 volatile I32 oldmark = SP - PL_stack_base;
1938 volatile I32 retval = 0;
1944 if (flags & G_DISCARD) {
1951 Zero(PL_op, 1, UNOP);
1952 EXTEND(PL_stack_sp, 1);
1953 *++PL_stack_sp = sv;
1954 oldscope = PL_scopestack_ix;
1956 if (!(flags & G_NOARGS))
1957 myop.op_flags = OPf_STACKED;
1958 myop.op_next = Nullop;
1959 myop.op_type = OP_ENTEREVAL;
1960 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1961 (flags & G_ARRAY) ? OPf_WANT_LIST :
1963 if (flags & G_KEEPERR)
1964 myop.op_flags |= OPf_SPECIAL;
1966 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1968 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1975 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1977 call_body((OP*)&myop,TRUE);
1979 retval = PL_stack_sp - (PL_stack_base + oldmark);
1980 if (!(flags & G_KEEPERR))
1987 /* my_exit() was called */
1988 PL_curstash = PL_defstash;
1991 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1992 Perl_croak(aTHX_ "Callback called exit");
1997 PL_op = PL_restartop;
2001 PL_stack_sp = PL_stack_base + oldmark;
2002 if (flags & G_ARRAY)
2006 *++PL_stack_sp = &PL_sv_undef;
2012 if (flags & G_DISCARD) {
2013 PL_stack_sp = PL_stack_base + oldmark;
2023 =for apidoc p||eval_pv
2025 Tells Perl to C<eval> the given string and return an SV* result.
2031 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2034 SV* sv = newSVpv(p, 0);
2036 eval_sv(sv, G_SCALAR);
2043 if (croak_on_error && SvTRUE(ERRSV)) {
2045 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2051 /* Require a module. */
2054 =for apidoc p||require_pv
2056 Tells Perl to C<require> the file named by the string argument. It is
2057 analogous to the Perl code C<eval "require '$file'">. It's even
2058 implemented that way; consider using Perl_load_module instead.
2063 Perl_require_pv(pTHX_ const char *pv)
2067 PUSHSTACKi(PERLSI_REQUIRE);
2069 sv = sv_newmortal();
2070 sv_setpv(sv, "require '");
2073 eval_sv(sv, G_DISCARD);
2079 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2083 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2084 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2088 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2090 /* This message really ought to be max 23 lines.
2091 * Removed -h because the user already knows that option. Others? */
2093 static char *usage_msg[] = {
2094 "-0[octal] specify record separator (\\0, if no argument)",
2095 "-a autosplit mode with -n or -p (splits $_ into @F)",
2096 "-C enable native wide character system interfaces",
2097 "-c check syntax only (runs BEGIN and CHECK blocks)",
2098 "-d[:debugger] run program under debugger",
2099 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2100 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2101 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2102 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2103 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2104 "-l[octal] enable line ending processing, specifies line terminator",
2105 "-[mM][-]module execute `use/no module...' before executing program",
2106 "-n assume 'while (<>) { ... }' loop around program",
2107 "-p assume loop like -n but print line also, like sed",
2108 "-P run program through C preprocessor before compilation",
2109 "-s enable rudimentary parsing for switches after programfile",
2110 "-S look for programfile using PATH environment variable",
2111 "-T enable tainting checks",
2112 "-u dump core after parsing program",
2113 "-U allow unsafe operations",
2114 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2115 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2116 "-w enable many useful warnings (RECOMMENDED)",
2117 "-W enable all warnings",
2118 "-X disable all warnings",
2119 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2123 char **p = usage_msg;
2125 PerlIO_printf(PerlIO_stdout(),
2126 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2129 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2132 /* This routine handles any switches that can be given during run */
2135 Perl_moreswitches(pTHX_ char *s)
2143 numlen = 0; /* disallow underscores */
2144 rschar = (U32)scan_oct(s, 4, &numlen);
2145 SvREFCNT_dec(PL_nrs);
2146 if (rschar & ~((U8)~0))
2147 PL_nrs = &PL_sv_undef;
2148 else if (!rschar && numlen >= 2)
2149 PL_nrs = newSVpvn("", 0);
2152 PL_nrs = newSVpvn(&ch, 1);
2157 PL_widesyscalls = TRUE;
2162 PL_splitstr = savepv(s + 1);
2176 /* The following permits -d:Mod to accepts arguments following an =
2177 in the fashion that -MSome::Mod does. */
2178 if (*s == ':' || *s == '=') {
2181 sv = newSVpv("use Devel::", 0);
2183 /* We now allow -d:Module=Foo,Bar */
2184 while(isALNUM(*s) || *s==':') ++s;
2186 sv_catpv(sv, start);
2188 sv_catpvn(sv, start, s-start);
2189 sv_catpv(sv, " split(/,/,q{");
2194 my_setenv("PERL5DB", SvPV(sv, PL_na));
2197 PL_perldb = PERLDB_ALL;
2205 if (isALPHA(s[1])) {
2206 /* if adding extra options, remember to update DEBUG_MASK */
2207 static char debopts[] = "psltocPmfrxuLHXDSTR";
2210 for (s++; *s && (d = strchr(debopts,*s)); s++)
2211 PL_debug |= 1 << (d - debopts);
2214 PL_debug = atoi(s+1);
2215 for (s++; isDIGIT(*s); s++) ;
2217 PL_debug |= DEBUG_TOP_FLAG;
2219 if (ckWARN_d(WARN_DEBUGGING))
2220 Perl_warner(aTHX_ WARN_DEBUGGING,
2221 "Recompile perl with -DDEBUGGING to use -D switch\n");
2222 for (s++; isALNUM(*s); s++) ;
2228 usage(PL_origargv[0]);
2232 Safefree(PL_inplace);
2233 PL_inplace = savepv(s+1);
2235 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2238 if (*s == '-') /* Additional switches on #! line. */
2242 case 'I': /* -I handled both here and in parse_perl() */
2245 while (*s && isSPACE(*s))
2250 /* ignore trailing spaces (possibly followed by other switches) */
2252 for (e = p; *e && !isSPACE(*e); e++) ;
2256 } while (*p && *p != '-');
2257 e = savepvn(s, e-s);
2258 incpush(e, TRUE, TRUE);
2265 Perl_croak(aTHX_ "No directory specified for -I");
2271 SvREFCNT_dec(PL_ors_sv);
2275 PL_ors_sv = newSVpvn("\n",1);
2276 numlen = 0; /* disallow underscores */
2277 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2281 if (RsPARA(PL_nrs)) {
2282 PL_ors_sv = newSVpvn("\n\n",2);
2285 PL_ors_sv = newSVsv(PL_nrs);
2290 forbid_setid("-M"); /* XXX ? */
2293 forbid_setid("-m"); /* XXX ? */
2298 /* -M-foo == 'no foo' */
2299 if (*s == '-') { use = "no "; ++s; }
2300 sv = newSVpv(use,0);
2302 /* We allow -M'Module qw(Foo Bar)' */
2303 while(isALNUM(*s) || *s==':') ++s;
2305 sv_catpv(sv, start);
2306 if (*(start-1) == 'm') {
2308 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2309 sv_catpv( sv, " ()");
2313 Perl_croak(aTHX_ "Module name required with -%c option",
2315 sv_catpvn(sv, start, s-start);
2316 sv_catpv(sv, " split(/,/,q{");
2322 PL_preambleav = newAV();
2323 av_push(PL_preambleav, sv);
2326 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2338 PL_doswitches = TRUE;
2343 Perl_croak(aTHX_ "Too late for \"-T\" option");
2347 #ifdef MACOS_TRADITIONAL
2348 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2350 PL_do_undump = TRUE;
2359 PerlIO_printf(PerlIO_stdout(),
2360 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2361 PL_patchlevel, ARCHNAME));
2363 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2364 PerlIO_printf(PerlIO_stdout(),
2365 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2366 PerlIO_printf(PerlIO_stdout(),
2367 Perl_form(aTHX_ " built under %s at %s %s\n",
2368 OSNAME, __DATE__, __TIME__));
2369 PerlIO_printf(PerlIO_stdout(),
2370 Perl_form(aTHX_ " OS Specific Release: %s\n",
2374 #if defined(LOCAL_PATCH_COUNT)
2375 if (LOCAL_PATCH_COUNT > 0)
2376 PerlIO_printf(PerlIO_stdout(),
2377 "\n(with %d registered patch%s, "
2378 "see perl -V for more detail)",
2379 (int)LOCAL_PATCH_COUNT,
2380 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2383 PerlIO_printf(PerlIO_stdout(),
2384 "\n\nCopyright 1987-2001, Larry Wall\n");
2385 #ifdef MACOS_TRADITIONAL
2386 PerlIO_printf(PerlIO_stdout(),
2387 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2390 PerlIO_printf(PerlIO_stdout(),
2391 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2394 PerlIO_printf(PerlIO_stdout(),
2395 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2396 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2399 PerlIO_printf(PerlIO_stdout(),
2400 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2401 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2404 PerlIO_printf(PerlIO_stdout(),
2405 "atariST series port, ++jrb bammi@cadence.com\n");
2408 PerlIO_printf(PerlIO_stdout(),
2409 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2412 PerlIO_printf(PerlIO_stdout(),
2413 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2416 PerlIO_printf(PerlIO_stdout(),
2417 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2420 PerlIO_printf(PerlIO_stdout(),
2421 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2424 PerlIO_printf(PerlIO_stdout(),
2425 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2428 PerlIO_printf(PerlIO_stdout(),
2429 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2432 PerlIO_printf(PerlIO_stdout(),
2433 "MiNT port by Guido Flohr, 1997-1999\n");
2436 PerlIO_printf(PerlIO_stdout(),
2437 "EPOC port by Olaf Flebbe, 1999-2000\n");
2440 printf("WINCE port by Rainer Keuchel, 2001\n");
2441 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2444 #ifdef BINARY_BUILD_NOTICE
2445 BINARY_BUILD_NOTICE;
2447 PerlIO_printf(PerlIO_stdout(),
2449 Perl may be copied only under the terms of either the Artistic License or the\n\
2450 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2451 Complete documentation for Perl, including FAQ lists, should be found on\n\
2452 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2453 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2456 if (! (PL_dowarn & G_WARN_ALL_MASK))
2457 PL_dowarn |= G_WARN_ON;
2461 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2462 PL_compiling.cop_warnings = pWARN_ALL ;
2466 PL_dowarn = G_WARN_ALL_OFF;
2467 PL_compiling.cop_warnings = pWARN_NONE ;
2472 if (s[1] == '-') /* Additional switches on #! line. */
2477 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2483 #ifdef ALTERNATE_SHEBANG
2484 case 'S': /* OS/2 needs -S on "extproc" line. */
2492 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2497 /* compliments of Tom Christiansen */
2499 /* unexec() can be found in the Gnu emacs distribution */
2500 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2503 Perl_my_unexec(pTHX)
2511 prog = newSVpv(BIN_EXP, 0);
2512 sv_catpv(prog, "/perl");
2513 file = newSVpv(PL_origfilename, 0);
2514 sv_catpv(file, ".perldump");
2516 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2517 /* unexec prints msg to stderr in case of failure */
2518 PerlProc_exit(status);
2521 # include <lib$routines.h>
2522 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2524 ABORT(); /* for use with undump */
2529 /* initialize curinterp */
2534 #ifdef PERL_OBJECT /* XXX kludge */
2537 PL_chopset = " \n-"; \
2538 PL_copline = NOLINE; \
2539 PL_curcop = &PL_compiling;\
2540 PL_curcopdb = NULL; \
2542 PL_dumpindent = 4; \
2543 PL_laststatval = -1; \
2544 PL_laststype = OP_STAT; \
2545 PL_maxscream = -1; \
2546 PL_maxsysfd = MAXSYSFD; \
2547 PL_statname = Nullsv; \
2548 PL_tmps_floor = -1; \
2550 PL_op_mask = NULL; \
2551 PL_laststatval = -1; \
2552 PL_laststype = OP_STAT; \
2553 PL_mess_sv = Nullsv; \
2554 PL_splitstr = " "; \
2555 PL_generation = 100; \
2556 PL_exitlist = NULL; \
2557 PL_exitlistlen = 0; \
2559 PL_in_clean_objs = FALSE; \
2560 PL_in_clean_all = FALSE; \
2561 PL_profiledata = NULL; \
2563 PL_rsfp_filters = Nullav; \
2568 # ifdef MULTIPLICITY
2569 # define PERLVAR(var,type)
2570 # define PERLVARA(var,n,type)
2571 # if defined(PERL_IMPLICIT_CONTEXT)
2572 # if defined(USE_THREADS)
2573 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2574 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2575 # else /* !USE_THREADS */
2576 # define PERLVARI(var,type,init) aTHX->var = init;
2577 # define PERLVARIC(var,type,init) aTHX->var = init;
2578 # endif /* USE_THREADS */
2580 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2581 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2583 # include "intrpvar.h"
2584 # ifndef USE_THREADS
2585 # include "thrdvar.h"
2592 # define PERLVAR(var,type)
2593 # define PERLVARA(var,n,type)
2594 # define PERLVARI(var,type,init) PL_##var = init;
2595 # define PERLVARIC(var,type,init) PL_##var = init;
2596 # include "intrpvar.h"
2597 # ifndef USE_THREADS
2598 # include "thrdvar.h"
2610 S_init_main_stash(pTHX)
2614 /* Note that strtab is a rather special HV. Assumptions are made
2615 about not iterating on it, and not adding tie magic to it.
2616 It is properly deallocated in perl_destruct() */
2617 PL_strtab = newHV();
2619 MUTEX_INIT(&PL_strtab_mutex);
2621 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2622 hv_ksplit(PL_strtab, 512);
2624 PL_curstash = PL_defstash = newHV();
2625 PL_curstname = newSVpvn("main",4);
2626 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2627 SvREFCNT_dec(GvHV(gv));
2628 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2630 HvNAME(PL_defstash) = savepv("main");
2631 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2632 GvMULTI_on(PL_incgv);
2633 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2634 GvMULTI_on(PL_hintgv);
2635 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2636 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2637 GvMULTI_on(PL_errgv);
2638 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2639 GvMULTI_on(PL_replgv);
2640 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2641 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2642 sv_setpvn(ERRSV, "", 0);
2643 PL_curstash = PL_defstash;
2644 CopSTASH_set(&PL_compiling, PL_defstash);
2645 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2646 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2647 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2648 /* We must init $/ before switches are processed. */
2649 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2653 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2658 PL_origfilename = savepv("-e");
2661 /* if find_script() returns, it returns a malloc()-ed value */
2662 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2664 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2665 char *s = scriptname + 8;
2666 *fdscript = atoi(s);
2670 scriptname = savepv(s + 1);
2671 Safefree(PL_origfilename);
2672 PL_origfilename = scriptname;
2678 Safefree(CopFILE(PL_curcop));
2680 SvREFCNT_dec(CopFILEGV(PL_curcop));
2682 CopFILE_set(PL_curcop, PL_origfilename);
2683 if (strEQ(PL_origfilename,"-"))
2685 if (*fdscript >= 0) {
2686 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2687 #if defined(HAS_FCNTL) && defined(F_SETFD)
2689 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2692 else if (PL_preprocess) {
2693 char *cpp_cfg = CPPSTDIN;
2694 SV *cpp = newSVpvn("",0);
2695 SV *cmd = NEWSV(0,0);
2697 if (strEQ(cpp_cfg, "cppstdin"))
2698 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2699 sv_catpv(cpp, cpp_cfg);
2701 sv_catpvn(sv, "-I", 2);
2702 sv_catpv(sv,PRIVLIB_EXP);
2704 DEBUG_P(PerlIO_printf(Perl_debug_log,
2705 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2706 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2707 #if defined(MSDOS) || defined(WIN32)
2708 Perl_sv_setpvf(aTHX_ cmd, "\
2709 sed %s -e \"/^[^#]/b\" \
2710 -e \"/^#[ ]*include[ ]/b\" \
2711 -e \"/^#[ ]*define[ ]/b\" \
2712 -e \"/^#[ ]*if[ ]/b\" \
2713 -e \"/^#[ ]*ifdef[ ]/b\" \
2714 -e \"/^#[ ]*ifndef[ ]/b\" \
2715 -e \"/^#[ ]*else/b\" \
2716 -e \"/^#[ ]*elif[ ]/b\" \
2717 -e \"/^#[ ]*undef[ ]/b\" \
2718 -e \"/^#[ ]*endif/b\" \
2720 %s | %"SVf" -C %"SVf" %s",
2721 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2724 Perl_sv_setpvf(aTHX_ cmd, "\
2725 %s %s -e '/^[^#]/b' \
2726 -e '/^#[ ]*include[ ]/b' \
2727 -e '/^#[ ]*define[ ]/b' \
2728 -e '/^#[ ]*if[ ]/b' \
2729 -e '/^#[ ]*ifdef[ ]/b' \
2730 -e '/^#[ ]*ifndef[ ]/b' \
2731 -e '/^#[ ]*else/b' \
2732 -e '/^#[ ]*elif[ ]/b' \
2733 -e '/^#[ ]*undef[ ]/b' \
2734 -e '/^#[ ]*endif/b' \
2736 %s | %"SVf" %"SVf" %s",
2738 Perl_sv_setpvf(aTHX_ cmd, "\
2739 %s %s -e '/^[^#]/b' \
2740 -e '/^#[ ]*include[ ]/b' \
2741 -e '/^#[ ]*define[ ]/b' \
2742 -e '/^#[ ]*if[ ]/b' \
2743 -e '/^#[ ]*ifdef[ ]/b' \
2744 -e '/^#[ ]*ifndef[ ]/b' \
2745 -e '/^#[ ]*else/b' \
2746 -e '/^#[ ]*elif[ ]/b' \
2747 -e '/^#[ ]*undef[ ]/b' \
2748 -e '/^#[ ]*endif/b' \
2750 %s | %"SVf" -C %"SVf" %s",
2757 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2759 scriptname, cpp, sv, CPPMINUS);
2760 PL_doextract = FALSE;
2761 #ifdef IAMSUID /* actually, this is caught earlier */
2762 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2764 (void)seteuid(PL_uid); /* musn't stay setuid root */
2767 (void)setreuid((Uid_t)-1, PL_uid);
2769 #ifdef HAS_SETRESUID
2770 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2772 PerlProc_setuid(PL_uid);
2776 if (PerlProc_geteuid() != PL_uid)
2777 Perl_croak(aTHX_ "Can't do seteuid!\n");
2779 #endif /* IAMSUID */
2780 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2784 else if (!*scriptname) {
2785 forbid_setid("program input from stdin");
2786 PL_rsfp = PerlIO_stdin();
2789 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2790 #if defined(HAS_FCNTL) && defined(F_SETFD)
2792 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2797 #ifndef IAMSUID /* in case script is not readable before setuid */
2799 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2800 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2803 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2804 (int)PERL_REVISION, (int)PERL_VERSION,
2805 (int)PERL_SUBVERSION), PL_origargv);
2806 Perl_croak(aTHX_ "Can't do setuid\n");
2812 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2815 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2816 CopFILE(PL_curcop), Strerror(errno));
2822 * I_SYSSTATVFS HAS_FSTATVFS
2824 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2825 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2826 * here so that metaconfig picks them up. */
2830 S_fd_on_nosuid_fs(pTHX_ int fd)
2832 int check_okay = 0; /* able to do all the required sys/libcalls */
2833 int on_nosuid = 0; /* the fd is on a nosuid fs */
2835 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2836 * fstatvfs() is UNIX98.
2837 * fstatfs() is 4.3 BSD.
2838 * ustat()+getmnt() is pre-4.3 BSD.
2839 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2840 * an irrelevant filesystem while trying to reach the right one.
2843 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2845 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2846 defined(HAS_FSTATVFS)
2847 # define FD_ON_NOSUID_CHECK_OKAY
2848 struct statvfs stfs;
2850 check_okay = fstatvfs(fd, &stfs) == 0;
2851 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2852 # endif /* fstatvfs */
2854 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2855 defined(PERL_MOUNT_NOSUID) && \
2856 defined(HAS_FSTATFS) && \
2857 defined(HAS_STRUCT_STATFS) && \
2858 defined(HAS_STRUCT_STATFS_F_FLAGS)
2859 # define FD_ON_NOSUID_CHECK_OKAY
2862 check_okay = fstatfs(fd, &stfs) == 0;
2863 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2864 # endif /* fstatfs */
2866 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2867 defined(PERL_MOUNT_NOSUID) && \
2868 defined(HAS_FSTAT) && \
2869 defined(HAS_USTAT) && \
2870 defined(HAS_GETMNT) && \
2871 defined(HAS_STRUCT_FS_DATA) && \
2873 # define FD_ON_NOSUID_CHECK_OKAY
2876 if (fstat(fd, &fdst) == 0) {
2878 if (ustat(fdst.st_dev, &us) == 0) {
2880 /* NOSTAT_ONE here because we're not examining fields which
2881 * vary between that case and STAT_ONE. */
2882 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2883 size_t cmplen = sizeof(us.f_fname);
2884 if (sizeof(fsd.fd_req.path) < cmplen)
2885 cmplen = sizeof(fsd.fd_req.path);
2886 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2887 fdst.st_dev == fsd.fd_req.dev) {
2889 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2895 # endif /* fstat+ustat+getmnt */
2897 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2898 defined(HAS_GETMNTENT) && \
2899 defined(HAS_HASMNTOPT) && \
2900 defined(MNTOPT_NOSUID)
2901 # define FD_ON_NOSUID_CHECK_OKAY
2902 FILE *mtab = fopen("/etc/mtab", "r");
2903 struct mntent *entry;
2904 struct stat stb, fsb;
2906 if (mtab && (fstat(fd, &stb) == 0)) {
2907 while (entry = getmntent(mtab)) {
2908 if (stat(entry->mnt_dir, &fsb) == 0
2909 && fsb.st_dev == stb.st_dev)
2911 /* found the filesystem */
2913 if (hasmntopt(entry, MNTOPT_NOSUID))
2916 } /* A single fs may well fail its stat(). */
2921 # endif /* getmntent+hasmntopt */
2924 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2927 #endif /* IAMSUID */
2930 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2936 /* do we need to emulate setuid on scripts? */
2938 /* This code is for those BSD systems that have setuid #! scripts disabled
2939 * in the kernel because of a security problem. Merely defining DOSUID
2940 * in perl will not fix that problem, but if you have disabled setuid
2941 * scripts in the kernel, this will attempt to emulate setuid and setgid
2942 * on scripts that have those now-otherwise-useless bits set. The setuid
2943 * root version must be called suidperl or sperlN.NNN. If regular perl
2944 * discovers that it has opened a setuid script, it calls suidperl with
2945 * the same argv that it had. If suidperl finds that the script it has
2946 * just opened is NOT setuid root, it sets the effective uid back to the
2947 * uid. We don't just make perl setuid root because that loses the
2948 * effective uid we had before invoking perl, if it was different from the
2951 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2952 * be defined in suidperl only. suidperl must be setuid root. The
2953 * Configure script will set this up for you if you want it.
2959 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2960 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2961 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2966 #ifndef HAS_SETREUID
2967 /* On this access check to make sure the directories are readable,
2968 * there is actually a small window that the user could use to make
2969 * filename point to an accessible directory. So there is a faint
2970 * chance that someone could execute a setuid script down in a
2971 * non-accessible directory. I don't know what to do about that.
2972 * But I don't think it's too important. The manual lies when
2973 * it says access() is useful in setuid programs.
2975 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2976 Perl_croak(aTHX_ "Permission denied");
2978 /* If we can swap euid and uid, then we can determine access rights
2979 * with a simple stat of the file, and then compare device and
2980 * inode to make sure we did stat() on the same file we opened.
2981 * Then we just have to make sure he or she can execute it.
2984 struct stat tmpstatbuf;
2988 setreuid(PL_euid,PL_uid) < 0
2991 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2994 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2995 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2996 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2997 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2998 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2999 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3000 Perl_croak(aTHX_ "Permission denied");
3002 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3003 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3004 (void)PerlIO_close(PL_rsfp);
3005 Perl_croak(aTHX_ "Permission denied\n");
3009 setreuid(PL_uid,PL_euid) < 0
3011 # if defined(HAS_SETRESUID)
3012 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3015 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3016 Perl_croak(aTHX_ "Can't reswap uid and euid");
3017 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3018 Perl_croak(aTHX_ "Permission denied\n");
3020 #endif /* HAS_SETREUID */
3021 #endif /* IAMSUID */
3023 if (!S_ISREG(PL_statbuf.st_mode))
3024 Perl_croak(aTHX_ "Permission denied");
3025 if (PL_statbuf.st_mode & S_IWOTH)
3026 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3027 PL_doswitches = FALSE; /* -s is insecure in suid */
3028 CopLINE_inc(PL_curcop);
3029 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3030 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3031 Perl_croak(aTHX_ "No #! line");
3032 s = SvPV(PL_linestr,n_a)+2;
3034 while (!isSPACE(*s)) s++;
3035 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3036 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3037 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3038 Perl_croak(aTHX_ "Not a perl script");
3039 while (*s == ' ' || *s == '\t') s++;
3041 * #! arg must be what we saw above. They can invoke it by
3042 * mentioning suidperl explicitly, but they may not add any strange
3043 * arguments beyond what #! says if they do invoke suidperl that way.
3045 len = strlen(validarg);
3046 if (strEQ(validarg," PHOOEY ") ||
3047 strnNE(s,validarg,len) || !isSPACE(s[len]))
3048 Perl_croak(aTHX_ "Args must match #! line");
3051 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3052 PL_euid == PL_statbuf.st_uid)
3054 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3055 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3056 #endif /* IAMSUID */
3058 if (PL_euid) { /* oops, we're not the setuid root perl */
3059 (void)PerlIO_close(PL_rsfp);
3062 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3063 (int)PERL_REVISION, (int)PERL_VERSION,
3064 (int)PERL_SUBVERSION), PL_origargv);
3066 Perl_croak(aTHX_ "Can't do setuid\n");
3069 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3071 (void)setegid(PL_statbuf.st_gid);
3074 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3076 #ifdef HAS_SETRESGID
3077 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3079 PerlProc_setgid(PL_statbuf.st_gid);
3083 if (PerlProc_getegid() != PL_statbuf.st_gid)
3084 Perl_croak(aTHX_ "Can't do setegid!\n");
3086 if (PL_statbuf.st_mode & S_ISUID) {
3087 if (PL_statbuf.st_uid != PL_euid)
3089 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3092 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3094 #ifdef HAS_SETRESUID
3095 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3097 PerlProc_setuid(PL_statbuf.st_uid);
3101 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3102 Perl_croak(aTHX_ "Can't do seteuid!\n");
3104 else if (PL_uid) { /* oops, mustn't run as root */
3106 (void)seteuid((Uid_t)PL_uid);
3109 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3111 #ifdef HAS_SETRESUID
3112 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3114 PerlProc_setuid((Uid_t)PL_uid);
3118 if (PerlProc_geteuid() != PL_uid)
3119 Perl_croak(aTHX_ "Can't do seteuid!\n");
3122 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3123 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3126 else if (PL_preprocess)
3127 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3128 else if (fdscript >= 0)
3129 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3131 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3133 /* We absolutely must clear out any saved ids here, so we */
3134 /* exec the real perl, substituting fd script for scriptname. */
3135 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3136 PerlIO_rewind(PL_rsfp);
3137 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3138 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3139 if (!PL_origargv[which])
3140 Perl_croak(aTHX_ "Permission denied");
3141 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3142 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3143 #if defined(HAS_FCNTL) && defined(F_SETFD)
3144 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3146 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3147 (int)PERL_REVISION, (int)PERL_VERSION,
3148 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3149 Perl_croak(aTHX_ "Can't do setuid\n");
3150 #endif /* IAMSUID */
3152 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3153 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3154 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3155 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3157 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3160 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3161 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3162 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3163 /* not set-id, must be wrapped */
3169 S_find_beginning(pTHX)
3171 register char *s, *s2;
3173 /* skip forward in input to the real script? */
3176 #ifdef MACOS_TRADITIONAL
3177 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3179 while (PL_doextract || gMacPerl_AlwaysExtract) {
3180 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3181 if (!gMacPerl_AlwaysExtract)
3182 Perl_croak(aTHX_ "No Perl script found in input\n");
3184 if (PL_doextract) /* require explicit override ? */
3185 if (!OverrideExtract(PL_origfilename))
3186 Perl_croak(aTHX_ "User aborted script\n");
3188 PL_doextract = FALSE;
3190 /* Pater peccavi, file does not have #! */
3191 PerlIO_rewind(PL_rsfp);
3196 while (PL_doextract) {
3197 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3198 Perl_croak(aTHX_ "No Perl script found in input\n");
3201 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3202 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3203 PL_doextract = FALSE;
3204 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3206 while (*s == ' ' || *s == '\t') s++;
3208 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3209 if (strnEQ(s2-4,"perl",4))
3211 while ((s = moreswitches(s)))
3214 #ifdef MACOS_TRADITIONAL
3225 PL_uid = PerlProc_getuid();
3226 PL_euid = PerlProc_geteuid();
3227 PL_gid = PerlProc_getgid();
3228 PL_egid = PerlProc_getegid();
3230 PL_uid |= PL_gid << 16;
3231 PL_euid |= PL_egid << 16;
3233 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3237 S_forbid_setid(pTHX_ char *s)
3239 if (PL_euid != PL_uid)
3240 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3241 if (PL_egid != PL_gid)
3242 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3246 Perl_init_debugger(pTHX)
3248 HV *ostash = PL_curstash;
3250 PL_curstash = PL_debstash;
3251 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3252 AvREAL_off(PL_dbargs);
3253 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3254 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3255 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3256 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3257 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3258 sv_setiv(PL_DBsingle, 0);
3259 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3260 sv_setiv(PL_DBtrace, 0);
3261 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3262 sv_setiv(PL_DBsignal, 0);
3263 PL_curstash = ostash;
3266 #ifndef STRESS_REALLOC
3267 #define REASONABLE(size) (size)
3269 #define REASONABLE(size) (1) /* unreasonable */
3273 Perl_init_stacks(pTHX)
3275 /* start with 128-item stack and 8K cxstack */
3276 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3277 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3278 PL_curstackinfo->si_type = PERLSI_MAIN;
3279 PL_curstack = PL_curstackinfo->si_stack;
3280 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3282 PL_stack_base = AvARRAY(PL_curstack);
3283 PL_stack_sp = PL_stack_base;
3284 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3286 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3289 PL_tmps_max = REASONABLE(128);
3291 New(54,PL_markstack,REASONABLE(32),I32);
3292 PL_markstack_ptr = PL_markstack;
3293 PL_markstack_max = PL_markstack + REASONABLE(32);
3297 New(54,PL_scopestack,REASONABLE(32),I32);
3298 PL_scopestack_ix = 0;
3299 PL_scopestack_max = REASONABLE(32);
3301 New(54,PL_savestack,REASONABLE(128),ANY);
3302 PL_savestack_ix = 0;
3303 PL_savestack_max = REASONABLE(128);
3305 New(54,PL_retstack,REASONABLE(16),OP*);
3307 PL_retstack_max = REASONABLE(16);
3315 while (PL_curstackinfo->si_next)
3316 PL_curstackinfo = PL_curstackinfo->si_next;
3317 while (PL_curstackinfo) {
3318 PERL_SI *p = PL_curstackinfo->si_prev;
3319 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3320 Safefree(PL_curstackinfo->si_cxstack);
3321 Safefree(PL_curstackinfo);
3322 PL_curstackinfo = p;
3324 Safefree(PL_tmps_stack);
3325 Safefree(PL_markstack);
3326 Safefree(PL_scopestack);
3327 Safefree(PL_savestack);
3328 Safefree(PL_retstack);
3332 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3343 lex_start(PL_linestr);
3345 PL_subname = newSVpvn("main",4);
3349 S_init_predump_symbols(pTHX)
3354 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3355 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3356 GvMULTI_on(PL_stdingv);
3357 io = GvIOp(PL_stdingv);
3358 IoTYPE(io) = IoTYPE_RDONLY;
3359 IoIFP(io) = PerlIO_stdin();
3360 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3362 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3364 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3367 IoTYPE(io) = IoTYPE_WRONLY;
3368 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3370 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3372 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3374 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3375 GvMULTI_on(PL_stderrgv);
3376 io = GvIOp(PL_stderrgv);
3377 IoTYPE(io) = IoTYPE_WRONLY;
3378 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3379 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3381 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3383 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3386 Safefree(PL_osname);
3387 PL_osname = savepv(OSNAME);
3391 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3396 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3397 char **dup_env_base = 0;
3398 int dup_env_count = 0;
3401 argc--,argv++; /* skip name of script */
3402 if (PL_doswitches) {
3403 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3406 if (argv[0][1] == '-' && !argv[0][2]) {
3410 if ((s = strchr(argv[0], '='))) {
3412 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3415 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3418 PL_toptarget = NEWSV(0,0);
3419 sv_upgrade(PL_toptarget, SVt_PVFM);
3420 sv_setpvn(PL_toptarget, "", 0);
3421 PL_bodytarget = NEWSV(0,0);
3422 sv_upgrade(PL_bodytarget, SVt_PVFM);
3423 sv_setpvn(PL_bodytarget, "", 0);
3424 PL_formtarget = PL_bodytarget;
3427 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3428 #ifdef MACOS_TRADITIONAL
3429 /* $0 is not majick on a Mac */
3430 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3432 sv_setpv(GvSV(tmpgv),PL_origfilename);
3433 magicname("0", "0", 1);
3436 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3438 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3440 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3442 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3443 GvMULTI_on(PL_argvgv);
3444 (void)gv_AVadd(PL_argvgv);
3445 av_clear(GvAVn(PL_argvgv));
3446 for (; argc > 0; argc--,argv++) {
3447 SV *sv = newSVpv(argv[0],0);
3448 av_push(GvAVn(PL_argvgv),sv);
3449 if (PL_widesyscalls)
3450 (void)sv_utf8_decode(sv);
3453 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3455 GvMULTI_on(PL_envgv);
3456 hv = GvHVn(PL_envgv);
3457 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3458 #ifdef USE_ENVIRON_ARRAY
3459 /* Note that if the supplied env parameter is actually a copy
3460 of the global environ then it may now point to free'd memory
3461 if the environment has been modified since. To avoid this
3462 problem we treat env==NULL as meaning 'use the default'
3467 environ[0] = Nullch;
3468 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3471 for (env_base = env; *env; env++)
3473 if ((dup_env_base = (char **)
3474 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3476 for (env = env_base, dup_env = dup_env_base;
3479 /* With environ one needs to use safesysmalloc(). */
3480 *dup_env = safesysmalloc(strlen(*env) + 1);
3481 (void)strcpy(*dup_env, *env);
3487 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3489 for (; *env; env++) {
3490 if (!(s = strchr(*env,'=')))
3496 sv = newSVpv(s--,0);
3497 (void)hv_store(hv, *env, s - *env, sv, 0);
3500 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3503 for (dup_env = dup_env_base; *dup_env; dup_env++)
3504 safesysfree(*dup_env);
3505 safesysfree(dup_env_base);
3507 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3508 #endif /* USE_ENVIRON_ARRAY */
3511 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3512 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3516 S_init_perllib(pTHX)
3521 s = PerlEnv_getenv("PERL5LIB");
3523 incpush(s, TRUE, TRUE);
3525 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3527 /* Treat PERL5?LIB as a possible search list logical name -- the
3528 * "natural" VMS idiom for a Unix path string. We allow each
3529 * element to be a set of |-separated directories for compatibility.
3533 if (my_trnlnm("PERL5LIB",buf,0))
3534 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3536 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3540 /* Use the ~-expanded versions of APPLLIB (undocumented),
3541 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3544 incpush(APPLLIB_EXP, TRUE, TRUE);
3548 incpush(ARCHLIB_EXP, FALSE, FALSE);
3550 #ifdef MACOS_TRADITIONAL
3552 struct stat tmpstatbuf;
3553 SV * privdir = NEWSV(55, 0);
3554 char * macperl = PerlEnv_getenv("MACPERL");
3559 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3560 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3561 incpush(SvPVX(privdir), TRUE, FALSE);
3562 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3563 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3564 incpush(SvPVX(privdir), TRUE, FALSE);
3566 SvREFCNT_dec(privdir);
3569 incpush(":", FALSE, FALSE);
3572 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3575 incpush(PRIVLIB_EXP, TRUE, FALSE);
3577 incpush(PRIVLIB_EXP, FALSE, FALSE);
3581 /* sitearch is always relative to sitelib on Windows for
3582 * DLL-based path intuition to work correctly */
3583 # if !defined(WIN32)
3584 incpush(SITEARCH_EXP, FALSE, FALSE);
3590 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3592 incpush(SITELIB_EXP, FALSE, FALSE);
3596 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3597 incpush(SITELIB_STEM, FALSE, TRUE);
3600 #ifdef PERL_VENDORARCH_EXP
3601 /* vendorarch is always relative to vendorlib on Windows for
3602 * DLL-based path intuition to work correctly */
3603 # if !defined(WIN32)
3604 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3608 #ifdef PERL_VENDORLIB_EXP
3610 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3612 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3616 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3617 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3620 #ifdef PERL_OTHERLIBDIRS
3621 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3625 incpush(".", FALSE, FALSE);
3626 #endif /* MACOS_TRADITIONAL */
3629 #if defined(DOSISH) || defined(EPOC)
3630 # define PERLLIB_SEP ';'
3633 # define PERLLIB_SEP '|'
3635 # if defined(MACOS_TRADITIONAL)
3636 # define PERLLIB_SEP ','
3638 # define PERLLIB_SEP ':'
3642 #ifndef PERLLIB_MANGLE
3643 # define PERLLIB_MANGLE(s,n) (s)
3647 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3649 SV *subdir = Nullsv;
3654 if (addsubdirs || addoldvers) {
3655 subdir = sv_newmortal();
3658 /* Break at all separators */
3660 SV *libdir = NEWSV(55,0);
3663 /* skip any consecutive separators */
3664 while ( *p == PERLLIB_SEP ) {
3665 /* Uncomment the next line for PATH semantics */
3666 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3670 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3671 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3676 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3677 p = Nullch; /* break out */
3679 #ifdef MACOS_TRADITIONAL
3680 if (!strchr(SvPVX(libdir), ':'))
3681 sv_insert(libdir, 0, 0, ":", 1);
3682 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3683 sv_catpv(libdir, ":");
3687 * BEFORE pushing libdir onto @INC we may first push version- and
3688 * archname-specific sub-directories.
3690 if (addsubdirs || addoldvers) {
3691 #ifdef PERL_INC_VERSION_LIST
3692 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3693 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3694 const char **incver;
3696 struct stat tmpstatbuf;
3701 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3703 while (unix[len-1] == '/') len--; /* Cosmetic */
3704 sv_usepvn(libdir,unix,len);
3707 PerlIO_printf(Perl_error_log,
3708 "Failed to unixify @INC element \"%s\"\n",
3712 #ifdef MACOS_TRADITIONAL
3713 #define PERL_AV_SUFFIX_FMT ""
3714 #define PERL_ARCH_FMT "%s:"
3715 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3717 #define PERL_AV_SUFFIX_FMT "/"
3718 #define PERL_ARCH_FMT "/%s"
3719 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3721 /* .../version/archname if -d .../version/archname */
3722 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3724 (int)PERL_REVISION, (int)PERL_VERSION,
3725 (int)PERL_SUBVERSION, ARCHNAME);
3726 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3727 S_ISDIR(tmpstatbuf.st_mode))
3728 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3730 /* .../version if -d .../version */
3731 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3732 (int)PERL_REVISION, (int)PERL_VERSION,
3733 (int)PERL_SUBVERSION);
3734 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3735 S_ISDIR(tmpstatbuf.st_mode))
3736 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3738 /* .../archname if -d .../archname */
3739 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3740 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3741 S_ISDIR(tmpstatbuf.st_mode))
3742 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3745 #ifdef PERL_INC_VERSION_LIST
3747 for (incver = incverlist; *incver; incver++) {
3748 /* .../xxx if -d .../xxx */
3749 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3750 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3751 S_ISDIR(tmpstatbuf.st_mode))
3752 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3758 /* finally push this lib directory on the end of @INC */
3759 av_push(GvAVn(PL_incgv), libdir);
3764 STATIC struct perl_thread *
3765 S_init_main_thread(pTHX)
3767 #if !defined(PERL_IMPLICIT_CONTEXT)
3768 struct perl_thread *thr;
3772 Newz(53, thr, 1, struct perl_thread);
3773 PL_curcop = &PL_compiling;
3774 thr->interp = PERL_GET_INTERP;
3775 thr->cvcache = newHV();
3776 thr->threadsv = newAV();
3777 /* thr->threadsvp is set when find_threadsv is called */
3778 thr->specific = newAV();
3779 thr->flags = THRf_R_JOINABLE;
3780 MUTEX_INIT(&thr->mutex);
3781 /* Handcraft thrsv similarly to mess_sv */
3782 New(53, PL_thrsv, 1, SV);
3783 Newz(53, xpv, 1, XPV);
3784 SvFLAGS(PL_thrsv) = SVt_PV;
3785 SvANY(PL_thrsv) = (void*)xpv;
3786 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3787 SvPVX(PL_thrsv) = (char*)thr;
3788 SvCUR_set(PL_thrsv, sizeof(thr));
3789 SvLEN_set(PL_thrsv, sizeof(thr));
3790 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3791 thr->oursv = PL_thrsv;
3792 PL_chopset = " \n-";
3795 MUTEX_LOCK(&PL_threads_mutex);
3801 MUTEX_UNLOCK(&PL_threads_mutex);
3803 #ifdef HAVE_THREAD_INTERN
3804 Perl_init_thread_intern(thr);
3807 #ifdef SET_THREAD_SELF
3808 SET_THREAD_SELF(thr);
3810 thr->self = pthread_self();
3811 #endif /* SET_THREAD_SELF */
3815 * These must come after the thread self setting
3816 * because sv_setpvn does SvTAINT and the taint
3817 * fields thread selfness being set.
3819 PL_toptarget = NEWSV(0,0);
3820 sv_upgrade(PL_toptarget, SVt_PVFM);
3821 sv_setpvn(PL_toptarget, "", 0);
3822 PL_bodytarget = NEWSV(0,0);
3823 sv_upgrade(PL_bodytarget, SVt_PVFM);
3824 sv_setpvn(PL_bodytarget, "", 0);
3825 PL_formtarget = PL_bodytarget;
3826 thr->errsv = newSVpvn("", 0);
3827 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3830 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3831 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3832 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3833 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3834 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3835 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3837 PL_reginterp_cnt = 0;
3841 #endif /* USE_THREADS */
3844 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3847 line_t oldline = CopLINE(PL_curcop);
3853 while (AvFILL(paramList) >= 0) {
3854 cv = (CV*)av_shift(paramList);
3855 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3856 /* save PL_beginav for compiler */
3857 if (! PL_beginav_save)
3858 PL_beginav_save = newAV();
3859 av_push(PL_beginav_save, (SV*)cv);
3863 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3864 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3870 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3874 (void)SvPV(atsv, len);
3877 PL_curcop = &PL_compiling;
3878 CopLINE_set(PL_curcop, oldline);
3879 if (paramList == PL_beginav)
3880 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3882 Perl_sv_catpvf(aTHX_ atsv,
3883 "%s failed--call queue aborted",
3884 paramList == PL_checkav ? "CHECK"
3885 : paramList == PL_initav ? "INIT"
3887 while (PL_scopestack_ix > oldscope)
3890 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3897 /* my_exit() was called */
3898 while (PL_scopestack_ix > oldscope)
3901 PL_curstash = PL_defstash;
3902 PL_curcop = &PL_compiling;
3903 CopLINE_set(PL_curcop, oldline);
3905 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3906 if (paramList == PL_beginav)
3907 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3909 Perl_croak(aTHX_ "%s failed--call queue aborted",
3910 paramList == PL_checkav ? "CHECK"
3911 : paramList == PL_initav ? "INIT"
3918 PL_curcop = &PL_compiling;
3919 CopLINE_set(PL_curcop, oldline);
3922 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3930 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3932 S_vcall_list_body(pTHX_ va_list args)
3934 CV *cv = va_arg(args, CV*);
3935 return call_list_body(cv);
3940 S_call_list_body(pTHX_ CV *cv)
3942 PUSHMARK(PL_stack_sp);
3943 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3948 Perl_my_exit(pTHX_ U32 status)
3950 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3951 thr, (unsigned long) status));
3960 STATUS_NATIVE_SET(status);
3967 Perl_my_failure_exit(pTHX)
3970 if (vaxc$errno & 1) {
3971 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3972 STATUS_NATIVE_SET(44);
3975 if (!vaxc$errno && errno) /* unlikely */
3976 STATUS_NATIVE_SET(44);
3978 STATUS_NATIVE_SET(vaxc$errno);
3983 STATUS_POSIX_SET(errno);
3985 exitstatus = STATUS_POSIX >> 8;
3986 if (exitstatus & 255)
3987 STATUS_POSIX_SET(exitstatus);
3989 STATUS_POSIX_SET(255);
3996 S_my_exit_jump(pTHX)
3998 register PERL_CONTEXT *cx;
4003 SvREFCNT_dec(PL_e_script);
4004 PL_e_script = Nullsv;
4007 POPSTACK_TO(PL_mainstack);
4008 if (cxstack_ix >= 0) {
4011 POPBLOCK(cx,PL_curpm);
4023 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
4026 p = SvPVX(PL_e_script);
4027 nl = strchr(p, '\n');
4028 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4030 filter_del(read_e_script);
4033 sv_catpvn(buf_sv, p, nl-p);
4034 sv_chop(PL_e_script, nl);