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);
481 REGEXP *re = (REGEXP *)SvIVX(resv);
483 if (SvFLAGS(resv) & SVf_BREAK) {
484 /* this is PL_reg_curpm, already freed
485 * flag is set in regexec.c:S_regtry
487 SvFLAGS(resv) &= ~SVf_BREAK;
494 SvREFCNT_dec(PL_regex_padav);
495 PL_regex_padav = Nullav;
499 /* loosen bonds of global variables */
502 (void)PerlIO_close(PL_rsfp);
506 /* Filters for program text */
507 SvREFCNT_dec(PL_rsfp_filters);
508 PL_rsfp_filters = Nullav;
511 PL_preprocess = FALSE;
517 PL_doswitches = FALSE;
518 PL_dowarn = G_WARN_OFF;
519 PL_doextract = FALSE;
520 PL_sawampersand = FALSE; /* must save all match strings */
523 Safefree(PL_inplace);
525 SvREFCNT_dec(PL_patchlevel);
528 SvREFCNT_dec(PL_e_script);
529 PL_e_script = Nullsv;
532 while (--PL_origargc >= 0) {
533 Safefree(PL_origargv[PL_origargc]);
535 Safefree(PL_origargv);
537 /* magical thingies */
539 SvREFCNT_dec(PL_ofs_sv); /* $, */
542 SvREFCNT_dec(PL_ors_sv); /* $\ */
545 SvREFCNT_dec(PL_rs); /* $/ */
548 SvREFCNT_dec(PL_nrs); /* $/ helper */
551 PL_multiline = 0; /* $* */
552 Safefree(PL_osname); /* $^O */
555 SvREFCNT_dec(PL_statname);
556 PL_statname = Nullsv;
559 /* defgv, aka *_ should be taken care of elsewhere */
561 /* clean up after study() */
562 SvREFCNT_dec(PL_lastscream);
563 PL_lastscream = Nullsv;
564 Safefree(PL_screamfirst);
566 Safefree(PL_screamnext);
570 Safefree(PL_efloatbuf);
571 PL_efloatbuf = Nullch;
574 /* startup and shutdown function lists */
575 SvREFCNT_dec(PL_beginav);
576 SvREFCNT_dec(PL_endav);
577 SvREFCNT_dec(PL_checkav);
578 SvREFCNT_dec(PL_initav);
584 /* shortcuts just get cleared */
590 PL_argvoutgv = Nullgv;
592 PL_stderrgv = Nullgv;
593 PL_last_in_gv = Nullgv;
595 PL_debstash = Nullhv;
597 /* reset so print() ends up where we expect */
600 SvREFCNT_dec(PL_argvout_stack);
601 PL_argvout_stack = Nullav;
603 SvREFCNT_dec(PL_modglobal);
604 PL_modglobal = Nullhv;
605 SvREFCNT_dec(PL_preambleav);
606 PL_preambleav = Nullav;
607 SvREFCNT_dec(PL_subname);
609 SvREFCNT_dec(PL_linestr);
611 SvREFCNT_dec(PL_pidstatus);
612 PL_pidstatus = Nullhv;
613 SvREFCNT_dec(PL_toptarget);
614 PL_toptarget = Nullsv;
615 SvREFCNT_dec(PL_bodytarget);
616 PL_bodytarget = Nullsv;
617 PL_formtarget = Nullsv;
619 /* free locale stuff */
620 #ifdef USE_LOCALE_COLLATE
621 Safefree(PL_collation_name);
622 PL_collation_name = Nullch;
625 #ifdef USE_LOCALE_NUMERIC
626 Safefree(PL_numeric_name);
627 PL_numeric_name = Nullch;
628 SvREFCNT_dec(PL_numeric_radix_sv);
631 /* clear utf8 character classes */
632 SvREFCNT_dec(PL_utf8_alnum);
633 SvREFCNT_dec(PL_utf8_alnumc);
634 SvREFCNT_dec(PL_utf8_ascii);
635 SvREFCNT_dec(PL_utf8_alpha);
636 SvREFCNT_dec(PL_utf8_space);
637 SvREFCNT_dec(PL_utf8_cntrl);
638 SvREFCNT_dec(PL_utf8_graph);
639 SvREFCNT_dec(PL_utf8_digit);
640 SvREFCNT_dec(PL_utf8_upper);
641 SvREFCNT_dec(PL_utf8_lower);
642 SvREFCNT_dec(PL_utf8_print);
643 SvREFCNT_dec(PL_utf8_punct);
644 SvREFCNT_dec(PL_utf8_xdigit);
645 SvREFCNT_dec(PL_utf8_mark);
646 SvREFCNT_dec(PL_utf8_toupper);
647 SvREFCNT_dec(PL_utf8_tolower);
648 PL_utf8_alnum = Nullsv;
649 PL_utf8_alnumc = Nullsv;
650 PL_utf8_ascii = Nullsv;
651 PL_utf8_alpha = Nullsv;
652 PL_utf8_space = Nullsv;
653 PL_utf8_cntrl = Nullsv;
654 PL_utf8_graph = Nullsv;
655 PL_utf8_digit = Nullsv;
656 PL_utf8_upper = Nullsv;
657 PL_utf8_lower = Nullsv;
658 PL_utf8_print = Nullsv;
659 PL_utf8_punct = Nullsv;
660 PL_utf8_xdigit = Nullsv;
661 PL_utf8_mark = Nullsv;
662 PL_utf8_toupper = Nullsv;
663 PL_utf8_totitle = Nullsv;
664 PL_utf8_tolower = Nullsv;
666 if (!specialWARN(PL_compiling.cop_warnings))
667 SvREFCNT_dec(PL_compiling.cop_warnings);
668 PL_compiling.cop_warnings = Nullsv;
669 if (!specialCopIO(PL_compiling.cop_io))
670 SvREFCNT_dec(PL_compiling.cop_io);
671 PL_compiling.cop_io = Nullsv;
673 Safefree(CopFILE(&PL_compiling));
674 CopFILE(&PL_compiling) = Nullch;
675 Safefree(CopSTASHPV(&PL_compiling));
677 SvREFCNT_dec(CopFILEGV(&PL_compiling));
678 CopFILEGV(&PL_compiling) = Nullgv;
679 /* cop_stash is not refcounted */
682 /* Prepare to destruct main symbol table. */
687 SvREFCNT_dec(PL_curstname);
688 PL_curstname = Nullsv;
690 /* clear queued errors */
691 SvREFCNT_dec(PL_errors);
695 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
696 if (PL_scopestack_ix != 0)
697 Perl_warner(aTHX_ WARN_INTERNAL,
698 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
699 (long)PL_scopestack_ix);
700 if (PL_savestack_ix != 0)
701 Perl_warner(aTHX_ WARN_INTERNAL,
702 "Unbalanced saves: %ld more saves than restores\n",
703 (long)PL_savestack_ix);
704 if (PL_tmps_floor != -1)
705 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
706 (long)PL_tmps_floor + 1);
707 if (cxstack_ix != -1)
708 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
709 (long)cxstack_ix + 1);
712 /* Now absolutely destruct everything, somehow or other, loops or no. */
713 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
714 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
716 /* the 2 is for PL_fdpid and PL_strtab */
717 while (PL_sv_count > 2 && sv_clean_all())
720 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
721 SvFLAGS(PL_fdpid) |= SVt_PVAV;
722 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
723 SvFLAGS(PL_strtab) |= SVt_PVHV;
725 AvREAL_off(PL_fdpid); /* no surviving entries */
726 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
729 #ifdef HAVE_INTERP_INTERN
733 /* Destruct the global string table. */
735 /* Yell and reset the HeVAL() slots that are still holding refcounts,
736 * so that sv_free() won't fail on them.
744 max = HvMAX(PL_strtab);
745 array = HvARRAY(PL_strtab);
748 if (hent && ckWARN_d(WARN_INTERNAL)) {
749 Perl_warner(aTHX_ WARN_INTERNAL,
750 "Unbalanced string table refcount: (%d) for \"%s\"",
751 HeVAL(hent) - Nullsv, HeKEY(hent));
752 HeVAL(hent) = Nullsv;
762 SvREFCNT_dec(PL_strtab);
765 /* free the pointer table used for cloning */
766 ptr_table_free(PL_ptr_table);
769 /* free special SVs */
771 SvREFCNT(&PL_sv_yes) = 0;
772 sv_clear(&PL_sv_yes);
773 SvANY(&PL_sv_yes) = NULL;
774 SvFLAGS(&PL_sv_yes) = 0;
776 SvREFCNT(&PL_sv_no) = 0;
778 SvANY(&PL_sv_no) = NULL;
779 SvFLAGS(&PL_sv_no) = 0;
781 SvREFCNT(&PL_sv_undef) = 0;
782 SvREADONLY_off(&PL_sv_undef);
784 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
785 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
787 Safefree(PL_origfilename);
788 Safefree(PL_reg_start_tmp);
790 Safefree(PL_reg_curpm);
791 Safefree(PL_reg_poscache);
792 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
793 Safefree(PL_op_mask);
794 Safefree(PL_psig_ptr);
795 Safefree(PL_psig_name);
796 Safefree(PL_bitcount);
797 Safefree(PL_psig_pend);
799 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
801 DEBUG_P(debprofdump());
803 MUTEX_DESTROY(&PL_strtab_mutex);
804 MUTEX_DESTROY(&PL_sv_mutex);
805 MUTEX_DESTROY(&PL_eval_mutex);
806 MUTEX_DESTROY(&PL_cred_mutex);
807 MUTEX_DESTROY(&PL_fdpid_mutex);
808 COND_DESTROY(&PL_eval_cond);
809 #ifdef EMULATE_ATOMIC_REFCOUNTS
810 MUTEX_DESTROY(&PL_svref_mutex);
811 #endif /* EMULATE_ATOMIC_REFCOUNTS */
813 /* As the penultimate thing, free the non-arena SV for thrsv */
814 Safefree(SvPVX(PL_thrsv));
815 Safefree(SvANY(PL_thrsv));
818 #endif /* USE_THREADS */
820 #ifdef USE_REENTRANT_API
821 Safefree(PL_reentrant_buffer->tmbuff);
822 Safefree(PL_reentrant_buffer);
827 /* As the absolutely last thing, free the non-arena SV for mess() */
830 /* it could have accumulated taint magic */
831 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
834 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
835 moremagic = mg->mg_moremagic;
836 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
838 Safefree(mg->mg_ptr);
842 /* we know that type >= SVt_PV */
843 (void)SvOOK_off(PL_mess_sv);
844 Safefree(SvPVX(PL_mess_sv));
845 Safefree(SvANY(PL_mess_sv));
846 Safefree(PL_mess_sv);
852 =for apidoc perl_free
854 Releases a Perl interpreter. See L<perlembed>.
862 #if defined(PERL_OBJECT)
865 # if defined(WIN32) || defined(NETWARE)
866 # if defined(PERL_IMPLICIT_SYS)
868 void *host = nw_internal_host;
870 void *host = w32_internal_host;
873 if (PerlProc_lasthost()) {
879 nw5_delete_internal_host(host);
881 win32_delete_internal_host(host);
894 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
896 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
897 PL_exitlist[PL_exitlistlen].fn = fn;
898 PL_exitlist[PL_exitlistlen].ptr = ptr;
903 =for apidoc perl_parse
905 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
911 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
920 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
923 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
924 setuid perl scripts securely.\n");
928 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
929 _dyld_lookup_and_bind
930 ("__environ", (unsigned long *) &environ_pointer, NULL);
935 /* we copy rather than point to argv
936 * since perl_clone will copy and perl_destruct
937 * has no way of knowing if we've made a copy or
941 New(0, PL_origargv, i+1, char*);
942 PL_origargv[i] = '\0';
944 PL_origargv[i] = savepv(argv[i]);
948 #ifdef USE_ENVIRON_ARRAY
949 PL_origenviron = environ;
954 /* Come here if running an undumped a.out. */
956 PL_origfilename = savepv(argv[0]);
957 PL_do_undump = FALSE;
958 cxstack_ix = -1; /* start label stack again */
960 init_postdump_symbols(argc,argv,env);
965 PL_curpad = AvARRAY(PL_comppad);
966 op_free(PL_main_root);
967 PL_main_root = Nullop;
969 PL_main_start = Nullop;
970 SvREFCNT_dec(PL_main_cv);
974 oldscope = PL_scopestack_ix;
975 PL_dowarn = G_WARN_OFF;
977 #ifdef PERL_FLEXIBLE_EXCEPTIONS
978 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
984 #ifndef PERL_FLEXIBLE_EXCEPTIONS
985 parse_body(env,xsinit);
988 call_list(oldscope, PL_checkav);
995 /* my_exit() was called */
996 while (PL_scopestack_ix > oldscope)
999 PL_curstash = PL_defstash;
1001 call_list(oldscope, PL_checkav);
1002 ret = STATUS_NATIVE_EXPORT;
1005 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1013 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1015 S_vparse_body(pTHX_ va_list args)
1017 char **env = va_arg(args, char**);
1018 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1020 return parse_body(env, xsinit);
1025 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1027 int argc = PL_origargc;
1028 char **argv = PL_origargv;
1029 char *scriptname = NULL;
1031 VOL bool dosearch = FALSE;
1032 char *validarg = "";
1036 char *popts, *cddir = Nullch;
1038 sv_setpvn(PL_linestr,"",0);
1039 sv = newSVpvn("",0); /* first used for -I flags */
1043 for (argc--,argv++; argc > 0; argc--,argv++) {
1044 if (argv[0][0] != '-' || !argv[0][1])
1048 validarg = " PHOOEY ";
1057 win32_argv2utf8(argc-1, argv+1);
1060 #ifndef PERL_STRICT_CR
1084 if ((s = moreswitches(s)))
1094 #ifdef MACOS_TRADITIONAL
1095 /* ignore -e for Dev:Pseudo argument */
1096 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1099 if (PL_euid != PL_uid || PL_egid != PL_gid)
1100 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1102 PL_e_script = newSVpvn("",0);
1103 filter_add(read_e_script, NULL);
1106 sv_catpv(PL_e_script, s);
1108 sv_catpv(PL_e_script, argv[1]);
1112 Perl_croak(aTHX_ "No code specified for -e");
1113 sv_catpv(PL_e_script, "\n");
1116 case 'I': /* -I handled both here and in moreswitches() */
1118 if (!*++s && (s=argv[1]) != Nullch) {
1123 STRLEN len = strlen(s);
1124 p = savepvn(s, len);
1125 incpush(p, TRUE, TRUE);
1126 sv_catpvn(sv, "-I", 2);
1127 sv_catpvn(sv, p, len);
1128 sv_catpvn(sv, " ", 1);
1132 Perl_croak(aTHX_ "No directory specified for -I");
1136 PL_preprocess = TRUE;
1146 PL_preambleav = newAV();
1147 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1149 PL_Sv = newSVpv("print myconfig();",0);
1151 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1153 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1155 sv_catpv(PL_Sv,"\" Compile-time options:");
1157 sv_catpv(PL_Sv," DEBUGGING");
1159 # ifdef MULTIPLICITY
1160 sv_catpv(PL_Sv," MULTIPLICITY");
1163 sv_catpv(PL_Sv," USE_THREADS");
1165 # ifdef USE_ITHREADS
1166 sv_catpv(PL_Sv," USE_ITHREADS");
1168 # ifdef USE_64_BIT_INT
1169 sv_catpv(PL_Sv," USE_64_BIT_INT");
1171 # ifdef USE_64_BIT_ALL
1172 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1174 # ifdef USE_LONG_DOUBLE
1175 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1177 # ifdef USE_LARGE_FILES
1178 sv_catpv(PL_Sv," USE_LARGE_FILES");
1181 sv_catpv(PL_Sv," USE_SOCKS");
1184 sv_catpv(PL_Sv," PERL_OBJECT");
1186 # ifdef PERL_IMPLICIT_CONTEXT
1187 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1189 # ifdef PERL_IMPLICIT_SYS
1190 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1192 sv_catpv(PL_Sv,"\\n\",");
1194 #if defined(LOCAL_PATCH_COUNT)
1195 if (LOCAL_PATCH_COUNT > 0) {
1197 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1198 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1199 if (PL_localpatches[i])
1200 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1204 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1207 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1209 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1212 sv_catpv(PL_Sv, "; \
1214 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1217 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1220 print \" \\%ENV:\\n @env\\n\" if @env; \
1221 print \" \\@INC:\\n @INC\\n\";");
1224 PL_Sv = newSVpv("config_vars(qw(",0);
1225 sv_catpv(PL_Sv, ++s);
1226 sv_catpv(PL_Sv, "))");
1229 av_push(PL_preambleav, PL_Sv);
1230 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1233 PL_doextract = TRUE;
1241 if (!*++s || isSPACE(*s)) {
1245 /* catch use of gnu style long options */
1246 if (strEQ(s, "version")) {
1250 if (strEQ(s, "help")) {
1257 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1263 #ifndef SECURE_INTERNAL_GETENV
1266 (popts = PerlEnv_getenv("PERL5OPT")))
1271 if (*s == '-' && *(s+1) == 'T')
1286 if (!strchr("DIMUdmw", *s))
1287 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1300 scriptname = argv[0];
1303 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1305 else if (scriptname == Nullch) {
1307 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1315 open_script(scriptname,dosearch,sv,&fdscript);
1317 validate_suid(validarg, scriptname,fdscript);
1320 #if defined(SIGCHLD) || defined(SIGCLD)
1323 # define SIGCHLD SIGCLD
1325 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1326 if (sigstate == SIG_IGN) {
1327 if (ckWARN(WARN_SIGNAL))
1328 Perl_warner(aTHX_ WARN_SIGNAL,
1329 "Can't ignore signal CHLD, forcing to default");
1330 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1336 #ifdef MACOS_TRADITIONAL
1337 if (PL_doextract || gMacPerl_AlwaysExtract) {
1342 if (cddir && PerlDir_chdir(cddir) < 0)
1343 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1347 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1348 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1349 CvUNIQUE_on(PL_compcv);
1351 PL_comppad = newAV();
1352 av_push(PL_comppad, Nullsv);
1353 PL_curpad = AvARRAY(PL_comppad);
1354 PL_comppad_name = newAV();
1355 PL_comppad_name_fill = 0;
1356 PL_min_intro_pending = 0;
1359 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1360 PL_curpad[0] = (SV*)newAV();
1361 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1362 CvOWNER(PL_compcv) = 0;
1363 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1364 MUTEX_INIT(CvMUTEXP(PL_compcv));
1365 #endif /* USE_THREADS */
1367 comppadlist = newAV();
1368 AvREAL_off(comppadlist);
1369 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1370 av_store(comppadlist, 1, (SV*)PL_comppad);
1371 CvPADLIST(PL_compcv) = comppadlist;
1374 boot_core_UNIVERSAL();
1376 boot_core_xsutils();
1380 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1382 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1388 # ifdef HAS_SOCKS5_INIT
1389 socks5_init(argv[0]);
1395 init_predump_symbols();
1396 /* init_postdump_symbols not currently designed to be called */
1397 /* more than once (ENV isn't cleared first, for example) */
1398 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1400 init_postdump_symbols(argc,argv,env);
1404 /* now parse the script */
1406 SETERRNO(0,SS$_NORMAL);
1408 #ifdef MACOS_TRADITIONAL
1409 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1411 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1413 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1414 MacPerl_MPWFileName(PL_origfilename));
1418 if (yyparse() || PL_error_count) {
1420 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1422 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1427 CopLINE_set(PL_curcop, 0);
1428 PL_curstash = PL_defstash;
1429 PL_preprocess = FALSE;
1431 SvREFCNT_dec(PL_e_script);
1432 PL_e_script = Nullsv;
1435 /* now that script is parsed, we can modify record separator */
1436 SvREFCNT_dec(PL_rs);
1437 PL_rs = SvREFCNT_inc(PL_nrs);
1438 sv_setsv(get_sv("/", TRUE), PL_rs);
1443 SAVECOPFILE(PL_curcop);
1444 SAVECOPLINE(PL_curcop);
1445 gv_check(PL_defstash);
1452 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1453 dump_mstats("after compilation:");
1462 =for apidoc perl_run
1464 Tells a Perl interpreter to run. See L<perlembed>.
1479 oldscope = PL_scopestack_ix;
1481 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1483 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1489 cxstack_ix = -1; /* start context stack again */
1491 case 0: /* normal completion */
1492 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1497 case 2: /* my_exit() */
1498 while (PL_scopestack_ix > oldscope)
1501 PL_curstash = PL_defstash;
1502 if (PL_endav && !PL_minus_c)
1503 call_list(oldscope, PL_endav);
1505 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1506 dump_mstats("after execution: ");
1508 ret = STATUS_NATIVE_EXPORT;
1512 POPSTACK_TO(PL_mainstack);
1515 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1525 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1527 S_vrun_body(pTHX_ va_list args)
1529 I32 oldscope = va_arg(args, I32);
1531 return run_body(oldscope);
1537 S_run_body(pTHX_ I32 oldscope)
1539 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1540 PL_sawampersand ? "Enabling" : "Omitting"));
1542 if (!PL_restartop) {
1543 DEBUG_x(dump_all());
1544 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1545 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1549 #ifdef MACOS_TRADITIONAL
1550 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1552 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1556 if (PERLDB_SINGLE && PL_DBsingle)
1557 sv_setiv(PL_DBsingle, 1);
1559 call_list(oldscope, PL_initav);
1565 PL_op = PL_restartop;
1569 else if (PL_main_start) {
1570 CvDEPTH(PL_main_cv) = 1;
1571 PL_op = PL_main_start;
1581 =for apidoc p||get_sv
1583 Returns the SV of the specified Perl scalar. If C<create> is set and the
1584 Perl variable does not exist then it will be created. If C<create> is not
1585 set and the variable does not exist then NULL is returned.
1591 Perl_get_sv(pTHX_ const char *name, I32 create)
1595 if (name[1] == '\0' && !isALPHA(name[0])) {
1596 PADOFFSET tmp = find_threadsv(name);
1597 if (tmp != NOT_IN_PAD)
1598 return THREADSV(tmp);
1600 #endif /* USE_THREADS */
1601 gv = gv_fetchpv(name, create, SVt_PV);
1608 =for apidoc p||get_av
1610 Returns the AV of the specified Perl array. If C<create> is set and the
1611 Perl variable does not exist then it will be created. If C<create> is not
1612 set and the variable does not exist then NULL is returned.
1618 Perl_get_av(pTHX_ const char *name, I32 create)
1620 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1629 =for apidoc p||get_hv
1631 Returns the HV of the specified Perl hash. If C<create> is set and the
1632 Perl variable does not exist then it will be created. If C<create> is not
1633 set and the variable does not exist then NULL is returned.
1639 Perl_get_hv(pTHX_ const char *name, I32 create)
1641 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1650 =for apidoc p||get_cv
1652 Returns the CV of the specified Perl subroutine. If C<create> is set and
1653 the Perl subroutine does not exist then it will be declared (which has the
1654 same effect as saying C<sub name;>). If C<create> is not set and the
1655 subroutine does not exist then NULL is returned.
1661 Perl_get_cv(pTHX_ const char *name, I32 create)
1663 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1664 /* XXX unsafe for threads if eval_owner isn't held */
1665 /* XXX this is probably not what they think they're getting.
1666 * It has the same effect as "sub name;", i.e. just a forward
1668 if (create && !GvCVu(gv))
1669 return newSUB(start_subparse(FALSE, 0),
1670 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1678 /* Be sure to refetch the stack pointer after calling these routines. */
1681 =for apidoc p||call_argv
1683 Performs a callback to the specified Perl sub. See L<perlcall>.
1689 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1691 /* See G_* flags in cop.h */
1692 /* null terminated arg list */
1699 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1704 return call_pv(sub_name, flags);
1708 =for apidoc p||call_pv
1710 Performs a callback to the specified Perl sub. See L<perlcall>.
1716 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1717 /* name of the subroutine */
1718 /* See G_* flags in cop.h */
1720 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1724 =for apidoc p||call_method
1726 Performs a callback to the specified Perl method. The blessed object must
1727 be on the stack. See L<perlcall>.
1733 Perl_call_method(pTHX_ const char *methname, I32 flags)
1734 /* name of the subroutine */
1735 /* See G_* flags in cop.h */
1737 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1740 /* May be called with any of a CV, a GV, or an SV containing the name. */
1742 =for apidoc p||call_sv
1744 Performs a callback to the Perl sub whose name is in the SV. See
1751 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1752 /* See G_* flags in cop.h */
1755 LOGOP myop; /* fake syntax tree node */
1758 volatile I32 retval = 0;
1760 bool oldcatch = CATCH_GET;
1765 if (flags & G_DISCARD) {
1770 Zero(&myop, 1, LOGOP);
1771 myop.op_next = Nullop;
1772 if (!(flags & G_NOARGS))
1773 myop.op_flags |= OPf_STACKED;
1774 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1775 (flags & G_ARRAY) ? OPf_WANT_LIST :
1780 EXTEND(PL_stack_sp, 1);
1781 *++PL_stack_sp = sv;
1783 oldscope = PL_scopestack_ix;
1785 if (PERLDB_SUB && PL_curstash != PL_debstash
1786 /* Handle first BEGIN of -d. */
1787 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1788 /* Try harder, since this may have been a sighandler, thus
1789 * curstash may be meaningless. */
1790 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1791 && !(flags & G_NODEBUG))
1792 PL_op->op_private |= OPpENTERSUB_DB;
1794 if (flags & G_METHOD) {
1795 Zero(&method_op, 1, UNOP);
1796 method_op.op_next = PL_op;
1797 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1798 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1799 PL_op = (OP*)&method_op;
1802 if (!(flags & G_EVAL)) {
1804 call_body((OP*)&myop, FALSE);
1805 retval = PL_stack_sp - (PL_stack_base + oldmark);
1806 CATCH_SET(oldcatch);
1809 myop.op_other = (OP*)&myop;
1811 /* we're trying to emulate pp_entertry() here */
1813 register PERL_CONTEXT *cx;
1814 I32 gimme = GIMME_V;
1819 push_return(Nullop);
1820 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1822 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1824 PL_in_eval = EVAL_INEVAL;
1825 if (flags & G_KEEPERR)
1826 PL_in_eval |= EVAL_KEEPERR;
1832 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1834 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1841 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1843 call_body((OP*)&myop, FALSE);
1845 retval = PL_stack_sp - (PL_stack_base + oldmark);
1846 if (!(flags & G_KEEPERR))
1853 /* my_exit() was called */
1854 PL_curstash = PL_defstash;
1857 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1858 Perl_croak(aTHX_ "Callback called exit");
1863 PL_op = PL_restartop;
1867 PL_stack_sp = PL_stack_base + oldmark;
1868 if (flags & G_ARRAY)
1872 *++PL_stack_sp = &PL_sv_undef;
1877 if (PL_scopestack_ix > oldscope) {
1881 register PERL_CONTEXT *cx;
1893 if (flags & G_DISCARD) {
1894 PL_stack_sp = PL_stack_base + oldmark;
1903 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1905 S_vcall_body(pTHX_ va_list args)
1907 OP *myop = va_arg(args, OP*);
1908 int is_eval = va_arg(args, int);
1910 call_body(myop, is_eval);
1916 S_call_body(pTHX_ OP *myop, int is_eval)
1918 if (PL_op == myop) {
1920 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1922 PL_op = Perl_pp_entersub(aTHX); /* this does */
1928 /* Eval a string. The G_EVAL flag is always assumed. */
1931 =for apidoc p||eval_sv
1933 Tells Perl to C<eval> the string in the SV.
1939 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1941 /* See G_* flags in cop.h */
1944 UNOP myop; /* fake syntax tree node */
1945 volatile I32 oldmark = SP - PL_stack_base;
1946 volatile I32 retval = 0;
1952 if (flags & G_DISCARD) {
1959 Zero(PL_op, 1, UNOP);
1960 EXTEND(PL_stack_sp, 1);
1961 *++PL_stack_sp = sv;
1962 oldscope = PL_scopestack_ix;
1964 if (!(flags & G_NOARGS))
1965 myop.op_flags = OPf_STACKED;
1966 myop.op_next = Nullop;
1967 myop.op_type = OP_ENTEREVAL;
1968 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1969 (flags & G_ARRAY) ? OPf_WANT_LIST :
1971 if (flags & G_KEEPERR)
1972 myop.op_flags |= OPf_SPECIAL;
1974 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1976 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1983 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1985 call_body((OP*)&myop,TRUE);
1987 retval = PL_stack_sp - (PL_stack_base + oldmark);
1988 if (!(flags & G_KEEPERR))
1995 /* my_exit() was called */
1996 PL_curstash = PL_defstash;
1999 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2000 Perl_croak(aTHX_ "Callback called exit");
2005 PL_op = PL_restartop;
2009 PL_stack_sp = PL_stack_base + oldmark;
2010 if (flags & G_ARRAY)
2014 *++PL_stack_sp = &PL_sv_undef;
2020 if (flags & G_DISCARD) {
2021 PL_stack_sp = PL_stack_base + oldmark;
2031 =for apidoc p||eval_pv
2033 Tells Perl to C<eval> the given string and return an SV* result.
2039 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2042 SV* sv = newSVpv(p, 0);
2044 eval_sv(sv, G_SCALAR);
2051 if (croak_on_error && SvTRUE(ERRSV)) {
2053 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2059 /* Require a module. */
2062 =for apidoc p||require_pv
2064 Tells Perl to C<require> the file named by the string argument. It is
2065 analogous to the Perl code C<eval "require '$file'">. It's even
2066 implemented that way; consider using Perl_load_module instead.
2071 Perl_require_pv(pTHX_ const char *pv)
2075 PUSHSTACKi(PERLSI_REQUIRE);
2077 sv = sv_newmortal();
2078 sv_setpv(sv, "require '");
2081 eval_sv(sv, G_DISCARD);
2087 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2091 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2092 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2096 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2098 /* This message really ought to be max 23 lines.
2099 * Removed -h because the user already knows that option. Others? */
2101 static char *usage_msg[] = {
2102 "-0[octal] specify record separator (\\0, if no argument)",
2103 "-a autosplit mode with -n or -p (splits $_ into @F)",
2104 "-C enable native wide character system interfaces",
2105 "-c check syntax only (runs BEGIN and CHECK blocks)",
2106 "-d[:debugger] run program under debugger",
2107 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2108 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2109 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2110 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2111 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2112 "-l[octal] enable line ending processing, specifies line terminator",
2113 "-[mM][-]module execute `use/no module...' before executing program",
2114 "-n assume 'while (<>) { ... }' loop around program",
2115 "-p assume loop like -n but print line also, like sed",
2116 "-P run program through C preprocessor before compilation",
2117 "-s enable rudimentary parsing for switches after programfile",
2118 "-S look for programfile using PATH environment variable",
2119 "-T enable tainting checks",
2120 "-u dump core after parsing program",
2121 "-U allow unsafe operations",
2122 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2123 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2124 "-w enable many useful warnings (RECOMMENDED)",
2125 "-W enable all warnings",
2126 "-X disable all warnings",
2127 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2131 char **p = usage_msg;
2133 PerlIO_printf(PerlIO_stdout(),
2134 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2137 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2140 /* This routine handles any switches that can be given during run */
2143 Perl_moreswitches(pTHX_ char *s)
2151 numlen = 0; /* disallow underscores */
2152 rschar = (U32)scan_oct(s, 4, &numlen);
2153 SvREFCNT_dec(PL_nrs);
2154 if (rschar & ~((U8)~0))
2155 PL_nrs = &PL_sv_undef;
2156 else if (!rschar && numlen >= 2)
2157 PL_nrs = newSVpvn("", 0);
2160 PL_nrs = newSVpvn(&ch, 1);
2165 PL_widesyscalls = TRUE;
2170 PL_splitstr = savepv(s + 1);
2184 /* The following permits -d:Mod to accepts arguments following an =
2185 in the fashion that -MSome::Mod does. */
2186 if (*s == ':' || *s == '=') {
2189 sv = newSVpv("use Devel::", 0);
2191 /* We now allow -d:Module=Foo,Bar */
2192 while(isALNUM(*s) || *s==':') ++s;
2194 sv_catpv(sv, start);
2196 sv_catpvn(sv, start, s-start);
2197 sv_catpv(sv, " split(/,/,q{");
2202 my_setenv("PERL5DB", SvPV(sv, PL_na));
2205 PL_perldb = PERLDB_ALL;
2213 if (isALPHA(s[1])) {
2214 /* if adding extra options, remember to update DEBUG_MASK */
2215 static char debopts[] = "psltocPmfrxuLHXDSTR";
2218 for (s++; *s && (d = strchr(debopts,*s)); s++)
2219 PL_debug |= 1 << (d - debopts);
2222 PL_debug = atoi(s+1);
2223 for (s++; isDIGIT(*s); s++) ;
2225 PL_debug |= DEBUG_TOP_FLAG;
2227 if (ckWARN_d(WARN_DEBUGGING))
2228 Perl_warner(aTHX_ WARN_DEBUGGING,
2229 "Recompile perl with -DDEBUGGING to use -D switch\n");
2230 for (s++; isALNUM(*s); s++) ;
2236 usage(PL_origargv[0]);
2240 Safefree(PL_inplace);
2241 PL_inplace = savepv(s+1);
2243 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2246 if (*s == '-') /* Additional switches on #! line. */
2250 case 'I': /* -I handled both here and in parse_perl() */
2253 while (*s && isSPACE(*s))
2258 /* ignore trailing spaces (possibly followed by other switches) */
2260 for (e = p; *e && !isSPACE(*e); e++) ;
2264 } while (*p && *p != '-');
2265 e = savepvn(s, e-s);
2266 incpush(e, TRUE, TRUE);
2273 Perl_croak(aTHX_ "No directory specified for -I");
2279 SvREFCNT_dec(PL_ors_sv);
2283 PL_ors_sv = newSVpvn("\n",1);
2284 numlen = 0; /* disallow underscores */
2285 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2289 if (RsPARA(PL_nrs)) {
2290 PL_ors_sv = newSVpvn("\n\n",2);
2293 PL_ors_sv = newSVsv(PL_nrs);
2298 forbid_setid("-M"); /* XXX ? */
2301 forbid_setid("-m"); /* XXX ? */
2306 /* -M-foo == 'no foo' */
2307 if (*s == '-') { use = "no "; ++s; }
2308 sv = newSVpv(use,0);
2310 /* We allow -M'Module qw(Foo Bar)' */
2311 while(isALNUM(*s) || *s==':') ++s;
2313 sv_catpv(sv, start);
2314 if (*(start-1) == 'm') {
2316 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2317 sv_catpv( sv, " ()");
2321 Perl_croak(aTHX_ "Module name required with -%c option",
2323 sv_catpvn(sv, start, s-start);
2324 sv_catpv(sv, " split(/,/,q{");
2330 PL_preambleav = newAV();
2331 av_push(PL_preambleav, sv);
2334 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2346 PL_doswitches = TRUE;
2351 Perl_croak(aTHX_ "Too late for \"-T\" option");
2355 #ifdef MACOS_TRADITIONAL
2356 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2358 PL_do_undump = TRUE;
2367 PerlIO_printf(PerlIO_stdout(),
2368 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2369 PL_patchlevel, ARCHNAME));
2371 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2372 PerlIO_printf(PerlIO_stdout(),
2373 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2374 PerlIO_printf(PerlIO_stdout(),
2375 Perl_form(aTHX_ " built under %s at %s %s\n",
2376 OSNAME, __DATE__, __TIME__));
2377 PerlIO_printf(PerlIO_stdout(),
2378 Perl_form(aTHX_ " OS Specific Release: %s\n",
2382 #if defined(LOCAL_PATCH_COUNT)
2383 if (LOCAL_PATCH_COUNT > 0)
2384 PerlIO_printf(PerlIO_stdout(),
2385 "\n(with %d registered patch%s, "
2386 "see perl -V for more detail)",
2387 (int)LOCAL_PATCH_COUNT,
2388 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2391 PerlIO_printf(PerlIO_stdout(),
2392 "\n\nCopyright 1987-2001, Larry Wall\n");
2393 #ifdef MACOS_TRADITIONAL
2394 PerlIO_printf(PerlIO_stdout(),
2395 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2398 PerlIO_printf(PerlIO_stdout(),
2399 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2402 PerlIO_printf(PerlIO_stdout(),
2403 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2404 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2407 PerlIO_printf(PerlIO_stdout(),
2408 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2409 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2412 PerlIO_printf(PerlIO_stdout(),
2413 "atariST series port, ++jrb bammi@cadence.com\n");
2416 PerlIO_printf(PerlIO_stdout(),
2417 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2420 PerlIO_printf(PerlIO_stdout(),
2421 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2424 PerlIO_printf(PerlIO_stdout(),
2425 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2428 PerlIO_printf(PerlIO_stdout(),
2429 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2432 PerlIO_printf(PerlIO_stdout(),
2433 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2436 PerlIO_printf(PerlIO_stdout(),
2437 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2440 PerlIO_printf(PerlIO_stdout(),
2441 "MiNT port by Guido Flohr, 1997-1999\n");
2444 PerlIO_printf(PerlIO_stdout(),
2445 "EPOC port by Olaf Flebbe, 1999-2000\n");
2448 printf("WINCE port by Rainer Keuchel, 2001\n");
2449 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2452 #ifdef BINARY_BUILD_NOTICE
2453 BINARY_BUILD_NOTICE;
2455 PerlIO_printf(PerlIO_stdout(),
2457 Perl may be copied only under the terms of either the Artistic License or the\n\
2458 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2459 Complete documentation for Perl, including FAQ lists, should be found on\n\
2460 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2461 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2464 if (! (PL_dowarn & G_WARN_ALL_MASK))
2465 PL_dowarn |= G_WARN_ON;
2469 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2470 PL_compiling.cop_warnings = pWARN_ALL ;
2474 PL_dowarn = G_WARN_ALL_OFF;
2475 PL_compiling.cop_warnings = pWARN_NONE ;
2480 if (s[1] == '-') /* Additional switches on #! line. */
2485 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2491 #ifdef ALTERNATE_SHEBANG
2492 case 'S': /* OS/2 needs -S on "extproc" line. */
2500 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2505 /* compliments of Tom Christiansen */
2507 /* unexec() can be found in the Gnu emacs distribution */
2508 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2511 Perl_my_unexec(pTHX)
2519 prog = newSVpv(BIN_EXP, 0);
2520 sv_catpv(prog, "/perl");
2521 file = newSVpv(PL_origfilename, 0);
2522 sv_catpv(file, ".perldump");
2524 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2525 /* unexec prints msg to stderr in case of failure */
2526 PerlProc_exit(status);
2529 # include <lib$routines.h>
2530 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2532 ABORT(); /* for use with undump */
2537 /* initialize curinterp */
2542 #ifdef PERL_OBJECT /* XXX kludge */
2545 PL_chopset = " \n-"; \
2546 PL_copline = NOLINE; \
2547 PL_curcop = &PL_compiling;\
2548 PL_curcopdb = NULL; \
2550 PL_dumpindent = 4; \
2551 PL_laststatval = -1; \
2552 PL_laststype = OP_STAT; \
2553 PL_maxscream = -1; \
2554 PL_maxsysfd = MAXSYSFD; \
2555 PL_statname = Nullsv; \
2556 PL_tmps_floor = -1; \
2558 PL_op_mask = NULL; \
2559 PL_laststatval = -1; \
2560 PL_laststype = OP_STAT; \
2561 PL_mess_sv = Nullsv; \
2562 PL_splitstr = " "; \
2563 PL_generation = 100; \
2564 PL_exitlist = NULL; \
2565 PL_exitlistlen = 0; \
2567 PL_in_clean_objs = FALSE; \
2568 PL_in_clean_all = FALSE; \
2569 PL_profiledata = NULL; \
2571 PL_rsfp_filters = Nullav; \
2576 # ifdef MULTIPLICITY
2577 # define PERLVAR(var,type)
2578 # define PERLVARA(var,n,type)
2579 # if defined(PERL_IMPLICIT_CONTEXT)
2580 # if defined(USE_THREADS)
2581 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2582 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2583 # else /* !USE_THREADS */
2584 # define PERLVARI(var,type,init) aTHX->var = init;
2585 # define PERLVARIC(var,type,init) aTHX->var = init;
2586 # endif /* USE_THREADS */
2588 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2589 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2591 # include "intrpvar.h"
2592 # ifndef USE_THREADS
2593 # include "thrdvar.h"
2600 # define PERLVAR(var,type)
2601 # define PERLVARA(var,n,type)
2602 # define PERLVARI(var,type,init) PL_##var = init;
2603 # define PERLVARIC(var,type,init) PL_##var = init;
2604 # include "intrpvar.h"
2605 # ifndef USE_THREADS
2606 # include "thrdvar.h"
2618 S_init_main_stash(pTHX)
2622 /* Note that strtab is a rather special HV. Assumptions are made
2623 about not iterating on it, and not adding tie magic to it.
2624 It is properly deallocated in perl_destruct() */
2625 PL_strtab = newHV();
2627 MUTEX_INIT(&PL_strtab_mutex);
2629 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2630 hv_ksplit(PL_strtab, 512);
2632 PL_curstash = PL_defstash = newHV();
2633 PL_curstname = newSVpvn("main",4);
2634 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2635 SvREFCNT_dec(GvHV(gv));
2636 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2638 HvNAME(PL_defstash) = savepv("main");
2639 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2640 GvMULTI_on(PL_incgv);
2641 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2642 GvMULTI_on(PL_hintgv);
2643 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2644 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2645 GvMULTI_on(PL_errgv);
2646 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2647 GvMULTI_on(PL_replgv);
2648 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2649 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2650 sv_setpvn(ERRSV, "", 0);
2651 PL_curstash = PL_defstash;
2652 CopSTASH_set(&PL_compiling, PL_defstash);
2653 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2654 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2655 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2656 /* We must init $/ before switches are processed. */
2657 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2661 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2666 PL_origfilename = savepv("-e");
2669 /* if find_script() returns, it returns a malloc()-ed value */
2670 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2672 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2673 char *s = scriptname + 8;
2674 *fdscript = atoi(s);
2678 scriptname = savepv(s + 1);
2679 Safefree(PL_origfilename);
2680 PL_origfilename = scriptname;
2686 Safefree(CopFILE(PL_curcop));
2688 SvREFCNT_dec(CopFILEGV(PL_curcop));
2690 CopFILE_set(PL_curcop, PL_origfilename);
2691 if (strEQ(PL_origfilename,"-"))
2693 if (*fdscript >= 0) {
2694 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2695 #if defined(HAS_FCNTL) && defined(F_SETFD)
2697 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2700 else if (PL_preprocess) {
2701 char *cpp_cfg = CPPSTDIN;
2702 SV *cpp = newSVpvn("",0);
2703 SV *cmd = NEWSV(0,0);
2705 if (strEQ(cpp_cfg, "cppstdin"))
2706 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2707 sv_catpv(cpp, cpp_cfg);
2709 sv_catpvn(sv, "-I", 2);
2710 sv_catpv(sv,PRIVLIB_EXP);
2712 DEBUG_P(PerlIO_printf(Perl_debug_log,
2713 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2714 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2715 #if defined(MSDOS) || defined(WIN32)
2716 Perl_sv_setpvf(aTHX_ cmd, "\
2717 sed %s -e \"/^[^#]/b\" \
2718 -e \"/^#[ ]*include[ ]/b\" \
2719 -e \"/^#[ ]*define[ ]/b\" \
2720 -e \"/^#[ ]*if[ ]/b\" \
2721 -e \"/^#[ ]*ifdef[ ]/b\" \
2722 -e \"/^#[ ]*ifndef[ ]/b\" \
2723 -e \"/^#[ ]*else/b\" \
2724 -e \"/^#[ ]*elif[ ]/b\" \
2725 -e \"/^#[ ]*undef[ ]/b\" \
2726 -e \"/^#[ ]*endif/b\" \
2728 %s | %"SVf" -C %"SVf" %s",
2729 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2732 Perl_sv_setpvf(aTHX_ cmd, "\
2733 %s %s -e '/^[^#]/b' \
2734 -e '/^#[ ]*include[ ]/b' \
2735 -e '/^#[ ]*define[ ]/b' \
2736 -e '/^#[ ]*if[ ]/b' \
2737 -e '/^#[ ]*ifdef[ ]/b' \
2738 -e '/^#[ ]*ifndef[ ]/b' \
2739 -e '/^#[ ]*else/b' \
2740 -e '/^#[ ]*elif[ ]/b' \
2741 -e '/^#[ ]*undef[ ]/b' \
2742 -e '/^#[ ]*endif/b' \
2744 %s | %"SVf" %"SVf" %s",
2746 Perl_sv_setpvf(aTHX_ cmd, "\
2747 %s %s -e '/^[^#]/b' \
2748 -e '/^#[ ]*include[ ]/b' \
2749 -e '/^#[ ]*define[ ]/b' \
2750 -e '/^#[ ]*if[ ]/b' \
2751 -e '/^#[ ]*ifdef[ ]/b' \
2752 -e '/^#[ ]*ifndef[ ]/b' \
2753 -e '/^#[ ]*else/b' \
2754 -e '/^#[ ]*elif[ ]/b' \
2755 -e '/^#[ ]*undef[ ]/b' \
2756 -e '/^#[ ]*endif/b' \
2758 %s | %"SVf" -C %"SVf" %s",
2765 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2767 scriptname, cpp, sv, CPPMINUS);
2768 PL_doextract = FALSE;
2769 #ifdef IAMSUID /* actually, this is caught earlier */
2770 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2772 (void)seteuid(PL_uid); /* musn't stay setuid root */
2775 (void)setreuid((Uid_t)-1, PL_uid);
2777 #ifdef HAS_SETRESUID
2778 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2780 PerlProc_setuid(PL_uid);
2784 if (PerlProc_geteuid() != PL_uid)
2785 Perl_croak(aTHX_ "Can't do seteuid!\n");
2787 #endif /* IAMSUID */
2788 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2792 else if (!*scriptname) {
2793 forbid_setid("program input from stdin");
2794 PL_rsfp = PerlIO_stdin();
2797 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2798 #if defined(HAS_FCNTL) && defined(F_SETFD)
2800 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2805 #ifndef IAMSUID /* in case script is not readable before setuid */
2807 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2808 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2811 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2812 (int)PERL_REVISION, (int)PERL_VERSION,
2813 (int)PERL_SUBVERSION), PL_origargv);
2814 Perl_croak(aTHX_ "Can't do setuid\n");
2820 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2823 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2824 CopFILE(PL_curcop), Strerror(errno));
2830 * I_SYSSTATVFS HAS_FSTATVFS
2832 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2833 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2834 * here so that metaconfig picks them up. */
2838 S_fd_on_nosuid_fs(pTHX_ int fd)
2840 int check_okay = 0; /* able to do all the required sys/libcalls */
2841 int on_nosuid = 0; /* the fd is on a nosuid fs */
2843 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2844 * fstatvfs() is UNIX98.
2845 * fstatfs() is 4.3 BSD.
2846 * ustat()+getmnt() is pre-4.3 BSD.
2847 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2848 * an irrelevant filesystem while trying to reach the right one.
2851 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2853 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2854 defined(HAS_FSTATVFS)
2855 # define FD_ON_NOSUID_CHECK_OKAY
2856 struct statvfs stfs;
2858 check_okay = fstatvfs(fd, &stfs) == 0;
2859 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2860 # endif /* fstatvfs */
2862 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2863 defined(PERL_MOUNT_NOSUID) && \
2864 defined(HAS_FSTATFS) && \
2865 defined(HAS_STRUCT_STATFS) && \
2866 defined(HAS_STRUCT_STATFS_F_FLAGS)
2867 # define FD_ON_NOSUID_CHECK_OKAY
2870 check_okay = fstatfs(fd, &stfs) == 0;
2871 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2872 # endif /* fstatfs */
2874 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2875 defined(PERL_MOUNT_NOSUID) && \
2876 defined(HAS_FSTAT) && \
2877 defined(HAS_USTAT) && \
2878 defined(HAS_GETMNT) && \
2879 defined(HAS_STRUCT_FS_DATA) && \
2881 # define FD_ON_NOSUID_CHECK_OKAY
2884 if (fstat(fd, &fdst) == 0) {
2886 if (ustat(fdst.st_dev, &us) == 0) {
2888 /* NOSTAT_ONE here because we're not examining fields which
2889 * vary between that case and STAT_ONE. */
2890 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2891 size_t cmplen = sizeof(us.f_fname);
2892 if (sizeof(fsd.fd_req.path) < cmplen)
2893 cmplen = sizeof(fsd.fd_req.path);
2894 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2895 fdst.st_dev == fsd.fd_req.dev) {
2897 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2903 # endif /* fstat+ustat+getmnt */
2905 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2906 defined(HAS_GETMNTENT) && \
2907 defined(HAS_HASMNTOPT) && \
2908 defined(MNTOPT_NOSUID)
2909 # define FD_ON_NOSUID_CHECK_OKAY
2910 FILE *mtab = fopen("/etc/mtab", "r");
2911 struct mntent *entry;
2912 struct stat stb, fsb;
2914 if (mtab && (fstat(fd, &stb) == 0)) {
2915 while (entry = getmntent(mtab)) {
2916 if (stat(entry->mnt_dir, &fsb) == 0
2917 && fsb.st_dev == stb.st_dev)
2919 /* found the filesystem */
2921 if (hasmntopt(entry, MNTOPT_NOSUID))
2924 } /* A single fs may well fail its stat(). */
2929 # endif /* getmntent+hasmntopt */
2932 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2935 #endif /* IAMSUID */
2938 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2944 /* do we need to emulate setuid on scripts? */
2946 /* This code is for those BSD systems that have setuid #! scripts disabled
2947 * in the kernel because of a security problem. Merely defining DOSUID
2948 * in perl will not fix that problem, but if you have disabled setuid
2949 * scripts in the kernel, this will attempt to emulate setuid and setgid
2950 * on scripts that have those now-otherwise-useless bits set. The setuid
2951 * root version must be called suidperl or sperlN.NNN. If regular perl
2952 * discovers that it has opened a setuid script, it calls suidperl with
2953 * the same argv that it had. If suidperl finds that the script it has
2954 * just opened is NOT setuid root, it sets the effective uid back to the
2955 * uid. We don't just make perl setuid root because that loses the
2956 * effective uid we had before invoking perl, if it was different from the
2959 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2960 * be defined in suidperl only. suidperl must be setuid root. The
2961 * Configure script will set this up for you if you want it.
2967 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2968 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2969 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2974 #ifndef HAS_SETREUID
2975 /* On this access check to make sure the directories are readable,
2976 * there is actually a small window that the user could use to make
2977 * filename point to an accessible directory. So there is a faint
2978 * chance that someone could execute a setuid script down in a
2979 * non-accessible directory. I don't know what to do about that.
2980 * But I don't think it's too important. The manual lies when
2981 * it says access() is useful in setuid programs.
2983 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2984 Perl_croak(aTHX_ "Permission denied");
2986 /* If we can swap euid and uid, then we can determine access rights
2987 * with a simple stat of the file, and then compare device and
2988 * inode to make sure we did stat() on the same file we opened.
2989 * Then we just have to make sure he or she can execute it.
2992 struct stat tmpstatbuf;
2996 setreuid(PL_euid,PL_uid) < 0
2999 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3002 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3003 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3004 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3005 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3006 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3007 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3008 Perl_croak(aTHX_ "Permission denied");
3010 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3011 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3012 (void)PerlIO_close(PL_rsfp);
3013 Perl_croak(aTHX_ "Permission denied\n");
3017 setreuid(PL_uid,PL_euid) < 0
3019 # if defined(HAS_SETRESUID)
3020 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3023 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3024 Perl_croak(aTHX_ "Can't reswap uid and euid");
3025 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3026 Perl_croak(aTHX_ "Permission denied\n");
3028 #endif /* HAS_SETREUID */
3029 #endif /* IAMSUID */
3031 if (!S_ISREG(PL_statbuf.st_mode))
3032 Perl_croak(aTHX_ "Permission denied");
3033 if (PL_statbuf.st_mode & S_IWOTH)
3034 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3035 PL_doswitches = FALSE; /* -s is insecure in suid */
3036 CopLINE_inc(PL_curcop);
3037 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3038 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3039 Perl_croak(aTHX_ "No #! line");
3040 s = SvPV(PL_linestr,n_a)+2;
3042 while (!isSPACE(*s)) s++;
3043 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3044 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3045 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3046 Perl_croak(aTHX_ "Not a perl script");
3047 while (*s == ' ' || *s == '\t') s++;
3049 * #! arg must be what we saw above. They can invoke it by
3050 * mentioning suidperl explicitly, but they may not add any strange
3051 * arguments beyond what #! says if they do invoke suidperl that way.
3053 len = strlen(validarg);
3054 if (strEQ(validarg," PHOOEY ") ||
3055 strnNE(s,validarg,len) || !isSPACE(s[len]))
3056 Perl_croak(aTHX_ "Args must match #! line");
3059 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3060 PL_euid == PL_statbuf.st_uid)
3062 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3063 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3064 #endif /* IAMSUID */
3066 if (PL_euid) { /* oops, we're not the setuid root perl */
3067 (void)PerlIO_close(PL_rsfp);
3070 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3071 (int)PERL_REVISION, (int)PERL_VERSION,
3072 (int)PERL_SUBVERSION), PL_origargv);
3074 Perl_croak(aTHX_ "Can't do setuid\n");
3077 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3079 (void)setegid(PL_statbuf.st_gid);
3082 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3084 #ifdef HAS_SETRESGID
3085 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3087 PerlProc_setgid(PL_statbuf.st_gid);
3091 if (PerlProc_getegid() != PL_statbuf.st_gid)
3092 Perl_croak(aTHX_ "Can't do setegid!\n");
3094 if (PL_statbuf.st_mode & S_ISUID) {
3095 if (PL_statbuf.st_uid != PL_euid)
3097 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3100 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3102 #ifdef HAS_SETRESUID
3103 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3105 PerlProc_setuid(PL_statbuf.st_uid);
3109 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3110 Perl_croak(aTHX_ "Can't do seteuid!\n");
3112 else if (PL_uid) { /* oops, mustn't run as root */
3114 (void)seteuid((Uid_t)PL_uid);
3117 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3119 #ifdef HAS_SETRESUID
3120 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3122 PerlProc_setuid((Uid_t)PL_uid);
3126 if (PerlProc_geteuid() != PL_uid)
3127 Perl_croak(aTHX_ "Can't do seteuid!\n");
3130 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3131 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3134 else if (PL_preprocess)
3135 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3136 else if (fdscript >= 0)
3137 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3139 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3141 /* We absolutely must clear out any saved ids here, so we */
3142 /* exec the real perl, substituting fd script for scriptname. */
3143 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3144 PerlIO_rewind(PL_rsfp);
3145 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3146 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3147 if (!PL_origargv[which])
3148 Perl_croak(aTHX_ "Permission denied");
3149 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3150 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3151 #if defined(HAS_FCNTL) && defined(F_SETFD)
3152 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3154 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3155 (int)PERL_REVISION, (int)PERL_VERSION,
3156 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3157 Perl_croak(aTHX_ "Can't do setuid\n");
3158 #endif /* IAMSUID */
3160 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3161 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3162 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3163 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3165 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3168 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3169 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3170 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3171 /* not set-id, must be wrapped */
3177 S_find_beginning(pTHX)
3179 register char *s, *s2;
3181 /* skip forward in input to the real script? */
3184 #ifdef MACOS_TRADITIONAL
3185 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3187 while (PL_doextract || gMacPerl_AlwaysExtract) {
3188 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3189 if (!gMacPerl_AlwaysExtract)
3190 Perl_croak(aTHX_ "No Perl script found in input\n");
3192 if (PL_doextract) /* require explicit override ? */
3193 if (!OverrideExtract(PL_origfilename))
3194 Perl_croak(aTHX_ "User aborted script\n");
3196 PL_doextract = FALSE;
3198 /* Pater peccavi, file does not have #! */
3199 PerlIO_rewind(PL_rsfp);
3204 while (PL_doextract) {
3205 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3206 Perl_croak(aTHX_ "No Perl script found in input\n");
3209 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3210 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3211 PL_doextract = FALSE;
3212 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3214 while (*s == ' ' || *s == '\t') s++;
3216 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3217 if (strnEQ(s2-4,"perl",4))
3219 while ((s = moreswitches(s)))
3222 #ifdef MACOS_TRADITIONAL
3233 PL_uid = PerlProc_getuid();
3234 PL_euid = PerlProc_geteuid();
3235 PL_gid = PerlProc_getgid();
3236 PL_egid = PerlProc_getegid();
3238 PL_uid |= PL_gid << 16;
3239 PL_euid |= PL_egid << 16;
3241 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3245 S_forbid_setid(pTHX_ char *s)
3247 if (PL_euid != PL_uid)
3248 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3249 if (PL_egid != PL_gid)
3250 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3254 Perl_init_debugger(pTHX)
3256 HV *ostash = PL_curstash;
3258 PL_curstash = PL_debstash;
3259 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3260 AvREAL_off(PL_dbargs);
3261 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3262 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3263 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3264 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3265 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3266 sv_setiv(PL_DBsingle, 0);
3267 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3268 sv_setiv(PL_DBtrace, 0);
3269 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3270 sv_setiv(PL_DBsignal, 0);
3271 PL_curstash = ostash;
3274 #ifndef STRESS_REALLOC
3275 #define REASONABLE(size) (size)
3277 #define REASONABLE(size) (1) /* unreasonable */
3281 Perl_init_stacks(pTHX)
3283 /* start with 128-item stack and 8K cxstack */
3284 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3285 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3286 PL_curstackinfo->si_type = PERLSI_MAIN;
3287 PL_curstack = PL_curstackinfo->si_stack;
3288 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3290 PL_stack_base = AvARRAY(PL_curstack);
3291 PL_stack_sp = PL_stack_base;
3292 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3294 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3297 PL_tmps_max = REASONABLE(128);
3299 New(54,PL_markstack,REASONABLE(32),I32);
3300 PL_markstack_ptr = PL_markstack;
3301 PL_markstack_max = PL_markstack + REASONABLE(32);
3305 New(54,PL_scopestack,REASONABLE(32),I32);
3306 PL_scopestack_ix = 0;
3307 PL_scopestack_max = REASONABLE(32);
3309 New(54,PL_savestack,REASONABLE(128),ANY);
3310 PL_savestack_ix = 0;
3311 PL_savestack_max = REASONABLE(128);
3313 New(54,PL_retstack,REASONABLE(16),OP*);
3315 PL_retstack_max = REASONABLE(16);
3323 while (PL_curstackinfo->si_next)
3324 PL_curstackinfo = PL_curstackinfo->si_next;
3325 while (PL_curstackinfo) {
3326 PERL_SI *p = PL_curstackinfo->si_prev;
3327 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3328 Safefree(PL_curstackinfo->si_cxstack);
3329 Safefree(PL_curstackinfo);
3330 PL_curstackinfo = p;
3332 Safefree(PL_tmps_stack);
3333 Safefree(PL_markstack);
3334 Safefree(PL_scopestack);
3335 Safefree(PL_savestack);
3336 Safefree(PL_retstack);
3340 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3351 lex_start(PL_linestr);
3353 PL_subname = newSVpvn("main",4);
3357 S_init_predump_symbols(pTHX)
3362 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3363 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3364 GvMULTI_on(PL_stdingv);
3365 io = GvIOp(PL_stdingv);
3366 IoTYPE(io) = IoTYPE_RDONLY;
3367 IoIFP(io) = PerlIO_stdin();
3368 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3370 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3372 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3375 IoTYPE(io) = IoTYPE_WRONLY;
3376 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3378 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3380 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3382 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3383 GvMULTI_on(PL_stderrgv);
3384 io = GvIOp(PL_stderrgv);
3385 IoTYPE(io) = IoTYPE_WRONLY;
3386 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3387 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3389 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3391 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3394 Safefree(PL_osname);
3395 PL_osname = savepv(OSNAME);
3399 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3404 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3405 char **dup_env_base = 0;
3406 int dup_env_count = 0;
3409 argc--,argv++; /* skip name of script */
3410 if (PL_doswitches) {
3411 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3414 if (argv[0][1] == '-' && !argv[0][2]) {
3418 if ((s = strchr(argv[0], '='))) {
3420 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3423 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3426 PL_toptarget = NEWSV(0,0);
3427 sv_upgrade(PL_toptarget, SVt_PVFM);
3428 sv_setpvn(PL_toptarget, "", 0);
3429 PL_bodytarget = NEWSV(0,0);
3430 sv_upgrade(PL_bodytarget, SVt_PVFM);
3431 sv_setpvn(PL_bodytarget, "", 0);
3432 PL_formtarget = PL_bodytarget;
3435 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3436 #ifdef MACOS_TRADITIONAL
3437 /* $0 is not majick on a Mac */
3438 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3440 sv_setpv(GvSV(tmpgv),PL_origfilename);
3441 magicname("0", "0", 1);
3444 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3446 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3448 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3450 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3451 GvMULTI_on(PL_argvgv);
3452 (void)gv_AVadd(PL_argvgv);
3453 av_clear(GvAVn(PL_argvgv));
3454 for (; argc > 0; argc--,argv++) {
3455 SV *sv = newSVpv(argv[0],0);
3456 av_push(GvAVn(PL_argvgv),sv);
3457 if (PL_widesyscalls)
3458 (void)sv_utf8_decode(sv);
3461 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3463 GvMULTI_on(PL_envgv);
3464 hv = GvHVn(PL_envgv);
3465 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3466 #ifdef USE_ENVIRON_ARRAY
3467 /* Note that if the supplied env parameter is actually a copy
3468 of the global environ then it may now point to free'd memory
3469 if the environment has been modified since. To avoid this
3470 problem we treat env==NULL as meaning 'use the default'
3475 environ[0] = Nullch;
3476 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3479 for (env_base = env; *env; env++)
3481 if ((dup_env_base = (char **)
3482 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3484 for (env = env_base, dup_env = dup_env_base;
3487 /* With environ one needs to use safesysmalloc(). */
3488 *dup_env = safesysmalloc(strlen(*env) + 1);
3489 (void)strcpy(*dup_env, *env);
3495 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3497 for (; *env; env++) {
3498 if (!(s = strchr(*env,'=')))
3504 sv = newSVpv(s--,0);
3505 (void)hv_store(hv, *env, s - *env, sv, 0);
3508 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3511 for (dup_env = dup_env_base; *dup_env; dup_env++)
3512 safesysfree(*dup_env);
3513 safesysfree(dup_env_base);
3515 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3516 #endif /* USE_ENVIRON_ARRAY */
3519 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3520 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3524 S_init_perllib(pTHX)
3529 s = PerlEnv_getenv("PERL5LIB");
3531 incpush(s, TRUE, TRUE);
3533 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3535 /* Treat PERL5?LIB as a possible search list logical name -- the
3536 * "natural" VMS idiom for a Unix path string. We allow each
3537 * element to be a set of |-separated directories for compatibility.
3541 if (my_trnlnm("PERL5LIB",buf,0))
3542 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3544 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3548 /* Use the ~-expanded versions of APPLLIB (undocumented),
3549 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3552 incpush(APPLLIB_EXP, TRUE, TRUE);
3556 incpush(ARCHLIB_EXP, FALSE, FALSE);
3558 #ifdef MACOS_TRADITIONAL
3560 struct stat tmpstatbuf;
3561 SV * privdir = NEWSV(55, 0);
3562 char * macperl = PerlEnv_getenv("MACPERL");
3567 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3568 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3569 incpush(SvPVX(privdir), TRUE, FALSE);
3570 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3571 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3572 incpush(SvPVX(privdir), TRUE, FALSE);
3574 SvREFCNT_dec(privdir);
3577 incpush(":", FALSE, FALSE);
3580 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3583 incpush(PRIVLIB_EXP, TRUE, FALSE);
3585 incpush(PRIVLIB_EXP, FALSE, FALSE);
3589 /* sitearch is always relative to sitelib on Windows for
3590 * DLL-based path intuition to work correctly */
3591 # if !defined(WIN32)
3592 incpush(SITEARCH_EXP, FALSE, FALSE);
3598 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3600 incpush(SITELIB_EXP, FALSE, FALSE);
3604 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3605 incpush(SITELIB_STEM, FALSE, TRUE);
3608 #ifdef PERL_VENDORARCH_EXP
3609 /* vendorarch is always relative to vendorlib on Windows for
3610 * DLL-based path intuition to work correctly */
3611 # if !defined(WIN32)
3612 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3616 #ifdef PERL_VENDORLIB_EXP
3618 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3620 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3624 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3625 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3628 #ifdef PERL_OTHERLIBDIRS
3629 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3633 incpush(".", FALSE, FALSE);
3634 #endif /* MACOS_TRADITIONAL */
3637 #if defined(DOSISH) || defined(EPOC)
3638 # define PERLLIB_SEP ';'
3641 # define PERLLIB_SEP '|'
3643 # if defined(MACOS_TRADITIONAL)
3644 # define PERLLIB_SEP ','
3646 # define PERLLIB_SEP ':'
3650 #ifndef PERLLIB_MANGLE
3651 # define PERLLIB_MANGLE(s,n) (s)
3655 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3657 SV *subdir = Nullsv;
3662 if (addsubdirs || addoldvers) {
3663 subdir = sv_newmortal();
3666 /* Break at all separators */
3668 SV *libdir = NEWSV(55,0);
3671 /* skip any consecutive separators */
3672 while ( *p == PERLLIB_SEP ) {
3673 /* Uncomment the next line for PATH semantics */
3674 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3678 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3679 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3684 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3685 p = Nullch; /* break out */
3687 #ifdef MACOS_TRADITIONAL
3688 if (!strchr(SvPVX(libdir), ':'))
3689 sv_insert(libdir, 0, 0, ":", 1);
3690 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3691 sv_catpv(libdir, ":");
3695 * BEFORE pushing libdir onto @INC we may first push version- and
3696 * archname-specific sub-directories.
3698 if (addsubdirs || addoldvers) {
3699 #ifdef PERL_INC_VERSION_LIST
3700 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3701 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3702 const char **incver;
3704 struct stat tmpstatbuf;
3709 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3711 while (unix[len-1] == '/') len--; /* Cosmetic */
3712 sv_usepvn(libdir,unix,len);
3715 PerlIO_printf(Perl_error_log,
3716 "Failed to unixify @INC element \"%s\"\n",
3720 #ifdef MACOS_TRADITIONAL
3721 #define PERL_AV_SUFFIX_FMT ""
3722 #define PERL_ARCH_FMT "%s:"
3723 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3725 #define PERL_AV_SUFFIX_FMT "/"
3726 #define PERL_ARCH_FMT "/%s"
3727 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3729 /* .../version/archname if -d .../version/archname */
3730 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3732 (int)PERL_REVISION, (int)PERL_VERSION,
3733 (int)PERL_SUBVERSION, ARCHNAME);
3734 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3735 S_ISDIR(tmpstatbuf.st_mode))
3736 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3738 /* .../version if -d .../version */
3739 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3740 (int)PERL_REVISION, (int)PERL_VERSION,
3741 (int)PERL_SUBVERSION);
3742 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3743 S_ISDIR(tmpstatbuf.st_mode))
3744 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3746 /* .../archname if -d .../archname */
3747 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3748 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3749 S_ISDIR(tmpstatbuf.st_mode))
3750 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3753 #ifdef PERL_INC_VERSION_LIST
3755 for (incver = incverlist; *incver; incver++) {
3756 /* .../xxx if -d .../xxx */
3757 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3758 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3759 S_ISDIR(tmpstatbuf.st_mode))
3760 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3766 /* finally push this lib directory on the end of @INC */
3767 av_push(GvAVn(PL_incgv), libdir);
3772 STATIC struct perl_thread *
3773 S_init_main_thread(pTHX)
3775 #if !defined(PERL_IMPLICIT_CONTEXT)
3776 struct perl_thread *thr;
3780 Newz(53, thr, 1, struct perl_thread);
3781 PL_curcop = &PL_compiling;
3782 thr->interp = PERL_GET_INTERP;
3783 thr->cvcache = newHV();
3784 thr->threadsv = newAV();
3785 /* thr->threadsvp is set when find_threadsv is called */
3786 thr->specific = newAV();
3787 thr->flags = THRf_R_JOINABLE;
3788 MUTEX_INIT(&thr->mutex);
3789 /* Handcraft thrsv similarly to mess_sv */
3790 New(53, PL_thrsv, 1, SV);
3791 Newz(53, xpv, 1, XPV);
3792 SvFLAGS(PL_thrsv) = SVt_PV;
3793 SvANY(PL_thrsv) = (void*)xpv;
3794 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3795 SvPVX(PL_thrsv) = (char*)thr;
3796 SvCUR_set(PL_thrsv, sizeof(thr));
3797 SvLEN_set(PL_thrsv, sizeof(thr));
3798 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3799 thr->oursv = PL_thrsv;
3800 PL_chopset = " \n-";
3803 MUTEX_LOCK(&PL_threads_mutex);
3809 MUTEX_UNLOCK(&PL_threads_mutex);
3811 #ifdef HAVE_THREAD_INTERN
3812 Perl_init_thread_intern(thr);
3815 #ifdef SET_THREAD_SELF
3816 SET_THREAD_SELF(thr);
3818 thr->self = pthread_self();
3819 #endif /* SET_THREAD_SELF */
3823 * These must come after the thread self setting
3824 * because sv_setpvn does SvTAINT and the taint
3825 * fields thread selfness being set.
3827 PL_toptarget = NEWSV(0,0);
3828 sv_upgrade(PL_toptarget, SVt_PVFM);
3829 sv_setpvn(PL_toptarget, "", 0);
3830 PL_bodytarget = NEWSV(0,0);
3831 sv_upgrade(PL_bodytarget, SVt_PVFM);
3832 sv_setpvn(PL_bodytarget, "", 0);
3833 PL_formtarget = PL_bodytarget;
3834 thr->errsv = newSVpvn("", 0);
3835 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3838 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3839 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3840 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3841 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3842 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3843 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3845 PL_reginterp_cnt = 0;
3849 #endif /* USE_THREADS */
3852 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3855 line_t oldline = CopLINE(PL_curcop);
3861 while (AvFILL(paramList) >= 0) {
3862 cv = (CV*)av_shift(paramList);
3863 if (PL_savebegin && (paramList == PL_beginav)) {
3864 /* save PL_beginav for compiler */
3865 if (! PL_beginav_save)
3866 PL_beginav_save = newAV();
3867 av_push(PL_beginav_save, (SV*)cv);
3871 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3872 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3878 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3882 (void)SvPV(atsv, len);
3885 PL_curcop = &PL_compiling;
3886 CopLINE_set(PL_curcop, oldline);
3887 if (paramList == PL_beginav)
3888 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3890 Perl_sv_catpvf(aTHX_ atsv,
3891 "%s failed--call queue aborted",
3892 paramList == PL_checkav ? "CHECK"
3893 : paramList == PL_initav ? "INIT"
3895 while (PL_scopestack_ix > oldscope)
3898 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3905 /* my_exit() was called */
3906 while (PL_scopestack_ix > oldscope)
3909 PL_curstash = PL_defstash;
3910 PL_curcop = &PL_compiling;
3911 CopLINE_set(PL_curcop, oldline);
3913 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3914 if (paramList == PL_beginav)
3915 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3917 Perl_croak(aTHX_ "%s failed--call queue aborted",
3918 paramList == PL_checkav ? "CHECK"
3919 : paramList == PL_initav ? "INIT"
3926 PL_curcop = &PL_compiling;
3927 CopLINE_set(PL_curcop, oldline);
3930 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3938 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3940 S_vcall_list_body(pTHX_ va_list args)
3942 CV *cv = va_arg(args, CV*);
3943 return call_list_body(cv);
3948 S_call_list_body(pTHX_ CV *cv)
3950 PUSHMARK(PL_stack_sp);
3951 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3956 Perl_my_exit(pTHX_ U32 status)
3958 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3959 thr, (unsigned long) status));
3968 STATUS_NATIVE_SET(status);
3975 Perl_my_failure_exit(pTHX)
3978 if (vaxc$errno & 1) {
3979 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3980 STATUS_NATIVE_SET(44);
3983 if (!vaxc$errno && errno) /* unlikely */
3984 STATUS_NATIVE_SET(44);
3986 STATUS_NATIVE_SET(vaxc$errno);
3991 STATUS_POSIX_SET(errno);
3993 exitstatus = STATUS_POSIX >> 8;
3994 if (exitstatus & 255)
3995 STATUS_POSIX_SET(exitstatus);
3997 STATUS_POSIX_SET(255);
4004 S_my_exit_jump(pTHX)
4006 register PERL_CONTEXT *cx;
4011 SvREFCNT_dec(PL_e_script);
4012 PL_e_script = Nullsv;
4015 POPSTACK_TO(PL_mainstack);
4016 if (cxstack_ix >= 0) {
4019 POPBLOCK(cx,PL_curpm);
4031 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
4034 p = SvPVX(PL_e_script);
4035 nl = strchr(p, '\n');
4036 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4038 filter_del(read_e_script);
4041 sv_catpvn(buf_sv, p, nl-p);
4042 sv_chop(PL_e_script, nl);