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)
401 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
406 if (PL_endav && !PL_minus_c)
407 call_list(PL_scopestack_ix, PL_endav);
413 /* We must account for everything. */
415 /* Destroy the main CV and syntax tree */
417 PL_curpad = AvARRAY(PL_comppad);
418 op_free(PL_main_root);
419 PL_main_root = Nullop;
421 PL_curcop = &PL_compiling;
422 PL_main_start = Nullop;
423 SvREFCNT_dec(PL_main_cv);
427 /* Tell PerlIO we are about to tear things apart in case
428 we have layers which are using resources that should
432 PerlIO_destruct(aTHX);
434 if (PL_sv_objcount) {
436 * Try to destruct global references. We do this first so that the
437 * destructors and destructees still exist. Some sv's might remain.
438 * Non-referenced objects are on their own.
443 /* unhook hooks which will soon be, or use, destroyed data */
444 SvREFCNT_dec(PL_warnhook);
445 PL_warnhook = Nullsv;
446 SvREFCNT_dec(PL_diehook);
449 /* call exit list functions */
450 while (PL_exitlistlen-- > 0)
451 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
453 Safefree(PL_exitlist);
455 if (destruct_level == 0){
457 DEBUG_P(debprofdump());
459 /* The exit() function will do everything that needs doing. */
460 return STATUS_NATIVE_EXPORT;;
463 /* jettison our possibly duplicated environment */
465 #ifdef USE_ENVIRON_ARRAY
466 if (environ != PL_origenviron) {
469 for (i = 0; environ[i]; i++)
470 safesysfree(environ[i]);
471 /* Must use safesysfree() when working with environ. */
472 safesysfree(environ);
474 environ = PL_origenviron;
479 /* the syntax tree is shared between clones
480 * so op_free(PL_main_root) only ReREFCNT_dec's
481 * REGEXPs in the parent interpreter
482 * we need to manually ReREFCNT_dec for the clones
485 I32 i = AvFILLp(PL_regex_padav) + 1;
486 SV **ary = AvARRAY(PL_regex_padav);
490 REGEXP *re = (REGEXP *)SvIVX(resv);
492 if (SvFLAGS(resv) & SVf_BREAK) {
493 /* this is PL_reg_curpm, already freed
494 * flag is set in regexec.c:S_regtry
496 SvFLAGS(resv) &= ~SVf_BREAK;
503 SvREFCNT_dec(PL_regex_padav);
504 PL_regex_padav = Nullav;
508 /* loosen bonds of global variables */
511 (void)PerlIO_close(PL_rsfp);
515 /* Filters for program text */
516 SvREFCNT_dec(PL_rsfp_filters);
517 PL_rsfp_filters = Nullav;
520 PL_preprocess = FALSE;
526 PL_doswitches = FALSE;
527 PL_dowarn = G_WARN_OFF;
528 PL_doextract = FALSE;
529 PL_sawampersand = FALSE; /* must save all match strings */
532 Safefree(PL_inplace);
534 SvREFCNT_dec(PL_patchlevel);
537 SvREFCNT_dec(PL_e_script);
538 PL_e_script = Nullsv;
541 while (--PL_origargc >= 0) {
542 Safefree(PL_origargv[PL_origargc]);
544 Safefree(PL_origargv);
546 /* magical thingies */
548 SvREFCNT_dec(PL_ofs_sv); /* $, */
551 SvREFCNT_dec(PL_ors_sv); /* $\ */
554 SvREFCNT_dec(PL_rs); /* $/ */
557 SvREFCNT_dec(PL_nrs); /* $/ helper */
560 PL_multiline = 0; /* $* */
561 Safefree(PL_osname); /* $^O */
564 SvREFCNT_dec(PL_statname);
565 PL_statname = Nullsv;
568 /* defgv, aka *_ should be taken care of elsewhere */
570 /* clean up after study() */
571 SvREFCNT_dec(PL_lastscream);
572 PL_lastscream = Nullsv;
573 Safefree(PL_screamfirst);
575 Safefree(PL_screamnext);
579 Safefree(PL_efloatbuf);
580 PL_efloatbuf = Nullch;
583 /* startup and shutdown function lists */
584 SvREFCNT_dec(PL_beginav);
585 SvREFCNT_dec(PL_endav);
586 SvREFCNT_dec(PL_checkav);
587 SvREFCNT_dec(PL_initav);
593 /* shortcuts just get cleared */
599 PL_argvoutgv = Nullgv;
601 PL_stderrgv = Nullgv;
602 PL_last_in_gv = Nullgv;
604 PL_debstash = Nullhv;
606 /* reset so print() ends up where we expect */
609 SvREFCNT_dec(PL_argvout_stack);
610 PL_argvout_stack = Nullav;
612 SvREFCNT_dec(PL_modglobal);
613 PL_modglobal = Nullhv;
614 SvREFCNT_dec(PL_preambleav);
615 PL_preambleav = Nullav;
616 SvREFCNT_dec(PL_subname);
618 SvREFCNT_dec(PL_linestr);
620 SvREFCNT_dec(PL_pidstatus);
621 PL_pidstatus = Nullhv;
622 SvREFCNT_dec(PL_toptarget);
623 PL_toptarget = Nullsv;
624 SvREFCNT_dec(PL_bodytarget);
625 PL_bodytarget = Nullsv;
626 PL_formtarget = Nullsv;
628 /* free locale stuff */
629 #ifdef USE_LOCALE_COLLATE
630 Safefree(PL_collation_name);
631 PL_collation_name = Nullch;
634 #ifdef USE_LOCALE_NUMERIC
635 Safefree(PL_numeric_name);
636 PL_numeric_name = Nullch;
637 SvREFCNT_dec(PL_numeric_radix_sv);
640 /* clear utf8 character classes */
641 SvREFCNT_dec(PL_utf8_alnum);
642 SvREFCNT_dec(PL_utf8_alnumc);
643 SvREFCNT_dec(PL_utf8_ascii);
644 SvREFCNT_dec(PL_utf8_alpha);
645 SvREFCNT_dec(PL_utf8_space);
646 SvREFCNT_dec(PL_utf8_cntrl);
647 SvREFCNT_dec(PL_utf8_graph);
648 SvREFCNT_dec(PL_utf8_digit);
649 SvREFCNT_dec(PL_utf8_upper);
650 SvREFCNT_dec(PL_utf8_lower);
651 SvREFCNT_dec(PL_utf8_print);
652 SvREFCNT_dec(PL_utf8_punct);
653 SvREFCNT_dec(PL_utf8_xdigit);
654 SvREFCNT_dec(PL_utf8_mark);
655 SvREFCNT_dec(PL_utf8_toupper);
656 SvREFCNT_dec(PL_utf8_tolower);
657 PL_utf8_alnum = Nullsv;
658 PL_utf8_alnumc = Nullsv;
659 PL_utf8_ascii = Nullsv;
660 PL_utf8_alpha = Nullsv;
661 PL_utf8_space = Nullsv;
662 PL_utf8_cntrl = Nullsv;
663 PL_utf8_graph = Nullsv;
664 PL_utf8_digit = Nullsv;
665 PL_utf8_upper = Nullsv;
666 PL_utf8_lower = Nullsv;
667 PL_utf8_print = Nullsv;
668 PL_utf8_punct = Nullsv;
669 PL_utf8_xdigit = Nullsv;
670 PL_utf8_mark = Nullsv;
671 PL_utf8_toupper = Nullsv;
672 PL_utf8_totitle = Nullsv;
673 PL_utf8_tolower = Nullsv;
675 if (!specialWARN(PL_compiling.cop_warnings))
676 SvREFCNT_dec(PL_compiling.cop_warnings);
677 PL_compiling.cop_warnings = Nullsv;
678 if (!specialCopIO(PL_compiling.cop_io))
679 SvREFCNT_dec(PL_compiling.cop_io);
680 PL_compiling.cop_io = Nullsv;
682 Safefree(CopFILE(&PL_compiling));
683 CopFILE(&PL_compiling) = Nullch;
684 Safefree(CopSTASHPV(&PL_compiling));
686 SvREFCNT_dec(CopFILEGV(&PL_compiling));
687 CopFILEGV(&PL_compiling) = Nullgv;
688 /* cop_stash is not refcounted */
691 /* Prepare to destruct main symbol table. */
696 SvREFCNT_dec(PL_curstname);
697 PL_curstname = Nullsv;
699 /* clear queued errors */
700 SvREFCNT_dec(PL_errors);
704 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
705 if (PL_scopestack_ix != 0)
706 Perl_warner(aTHX_ WARN_INTERNAL,
707 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
708 (long)PL_scopestack_ix);
709 if (PL_savestack_ix != 0)
710 Perl_warner(aTHX_ WARN_INTERNAL,
711 "Unbalanced saves: %ld more saves than restores\n",
712 (long)PL_savestack_ix);
713 if (PL_tmps_floor != -1)
714 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
715 (long)PL_tmps_floor + 1);
716 if (cxstack_ix != -1)
717 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
718 (long)cxstack_ix + 1);
721 /* Now absolutely destruct everything, somehow or other, loops or no. */
722 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
723 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
725 /* the 2 is for PL_fdpid and PL_strtab */
726 while (PL_sv_count > 2 && sv_clean_all())
729 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
730 SvFLAGS(PL_fdpid) |= SVt_PVAV;
731 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
732 SvFLAGS(PL_strtab) |= SVt_PVHV;
734 AvREAL_off(PL_fdpid); /* no surviving entries */
735 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
738 #ifdef HAVE_INTERP_INTERN
742 /* Destruct the global string table. */
744 /* Yell and reset the HeVAL() slots that are still holding refcounts,
745 * so that sv_free() won't fail on them.
753 max = HvMAX(PL_strtab);
754 array = HvARRAY(PL_strtab);
757 if (hent && ckWARN_d(WARN_INTERNAL)) {
758 Perl_warner(aTHX_ WARN_INTERNAL,
759 "Unbalanced string table refcount: (%d) for \"%s\"",
760 HeVAL(hent) - Nullsv, HeKEY(hent));
761 HeVAL(hent) = Nullsv;
771 SvREFCNT_dec(PL_strtab);
774 /* free the pointer table used for cloning */
775 ptr_table_free(PL_ptr_table);
778 /* free special SVs */
780 SvREFCNT(&PL_sv_yes) = 0;
781 sv_clear(&PL_sv_yes);
782 SvANY(&PL_sv_yes) = NULL;
783 SvFLAGS(&PL_sv_yes) = 0;
785 SvREFCNT(&PL_sv_no) = 0;
787 SvANY(&PL_sv_no) = NULL;
788 SvFLAGS(&PL_sv_no) = 0;
790 SvREFCNT(&PL_sv_undef) = 0;
791 SvREADONLY_off(&PL_sv_undef);
793 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
794 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
796 Safefree(PL_origfilename);
797 Safefree(PL_reg_start_tmp);
799 Safefree(PL_reg_curpm);
800 Safefree(PL_reg_poscache);
801 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
802 Safefree(PL_op_mask);
803 Safefree(PL_psig_ptr);
804 Safefree(PL_psig_name);
805 Safefree(PL_bitcount);
806 Safefree(PL_psig_pend);
808 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
810 DEBUG_P(debprofdump());
812 MUTEX_DESTROY(&PL_strtab_mutex);
813 MUTEX_DESTROY(&PL_sv_mutex);
814 MUTEX_DESTROY(&PL_eval_mutex);
815 MUTEX_DESTROY(&PL_cred_mutex);
816 MUTEX_DESTROY(&PL_fdpid_mutex);
817 COND_DESTROY(&PL_eval_cond);
818 #ifdef EMULATE_ATOMIC_REFCOUNTS
819 MUTEX_DESTROY(&PL_svref_mutex);
820 #endif /* EMULATE_ATOMIC_REFCOUNTS */
822 /* As the penultimate thing, free the non-arena SV for thrsv */
823 Safefree(SvPVX(PL_thrsv));
824 Safefree(SvANY(PL_thrsv));
827 #endif /* USE_THREADS */
829 #ifdef USE_REENTRANT_API
830 Safefree(PL_reentrant_buffer->tmbuff);
831 Safefree(PL_reentrant_buffer);
836 /* As the absolutely last thing, free the non-arena SV for mess() */
839 /* it could have accumulated taint magic */
840 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
843 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
844 moremagic = mg->mg_moremagic;
845 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
847 Safefree(mg->mg_ptr);
851 /* we know that type >= SVt_PV */
852 (void)SvOOK_off(PL_mess_sv);
853 Safefree(SvPVX(PL_mess_sv));
854 Safefree(SvANY(PL_mess_sv));
855 Safefree(PL_mess_sv);
858 return STATUS_NATIVE_EXPORT;
862 =for apidoc perl_free
864 Releases a Perl interpreter. See L<perlembed>.
872 #if defined(PERL_OBJECT)
875 # if defined(WIN32) || defined(NETWARE)
876 # if defined(PERL_IMPLICIT_SYS)
878 void *host = nw_internal_host;
880 void *host = w32_internal_host;
883 if (PerlProc_lasthost()) {
889 nw5_delete_internal_host(host);
891 win32_delete_internal_host(host);
904 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
906 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
907 PL_exitlist[PL_exitlistlen].fn = fn;
908 PL_exitlist[PL_exitlistlen].ptr = ptr;
913 =for apidoc perl_parse
915 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
921 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
930 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
933 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
934 setuid perl scripts securely.\n");
938 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
939 _dyld_lookup_and_bind
940 ("__environ", (unsigned long *) &environ_pointer, NULL);
945 /* we copy rather than point to argv
946 * since perl_clone will copy and perl_destruct
947 * has no way of knowing if we've made a copy or
951 New(0, PL_origargv, i+1, char*);
952 PL_origargv[i] = '\0';
954 PL_origargv[i] = savepv(argv[i]);
958 #ifdef USE_ENVIRON_ARRAY
959 PL_origenviron = environ;
964 /* Come here if running an undumped a.out. */
966 PL_origfilename = savepv(argv[0]);
967 PL_do_undump = FALSE;
968 cxstack_ix = -1; /* start label stack again */
970 init_postdump_symbols(argc,argv,env);
975 PL_curpad = AvARRAY(PL_comppad);
976 op_free(PL_main_root);
977 PL_main_root = Nullop;
979 PL_main_start = Nullop;
980 SvREFCNT_dec(PL_main_cv);
984 oldscope = PL_scopestack_ix;
985 PL_dowarn = G_WARN_OFF;
987 #ifdef PERL_FLEXIBLE_EXCEPTIONS
988 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
994 #ifndef PERL_FLEXIBLE_EXCEPTIONS
995 parse_body(env,xsinit);
998 call_list(oldscope, PL_checkav);
1005 /* my_exit() was called */
1006 while (PL_scopestack_ix > oldscope)
1009 PL_curstash = PL_defstash;
1011 call_list(oldscope, PL_checkav);
1012 ret = STATUS_NATIVE_EXPORT;
1015 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1023 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1025 S_vparse_body(pTHX_ va_list args)
1027 char **env = va_arg(args, char**);
1028 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1030 return parse_body(env, xsinit);
1035 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1037 int argc = PL_origargc;
1038 char **argv = PL_origargv;
1039 char *scriptname = NULL;
1041 VOL bool dosearch = FALSE;
1042 char *validarg = "";
1046 char *cddir = Nullch;
1048 sv_setpvn(PL_linestr,"",0);
1049 sv = newSVpvn("",0); /* first used for -I flags */
1053 for (argc--,argv++; argc > 0; argc--,argv++) {
1054 if (argv[0][0] != '-' || !argv[0][1])
1058 validarg = " PHOOEY ";
1067 win32_argv2utf8(argc-1, argv+1);
1070 #ifndef PERL_STRICT_CR
1094 if ((s = moreswitches(s)))
1104 #ifdef MACOS_TRADITIONAL
1105 /* ignore -e for Dev:Pseudo argument */
1106 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1109 if (PL_euid != PL_uid || PL_egid != PL_gid)
1110 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1112 PL_e_script = newSVpvn("",0);
1113 filter_add(read_e_script, NULL);
1116 sv_catpv(PL_e_script, s);
1118 sv_catpv(PL_e_script, argv[1]);
1122 Perl_croak(aTHX_ "No code specified for -e");
1123 sv_catpv(PL_e_script, "\n");
1126 case 'I': /* -I handled both here and in moreswitches() */
1128 if (!*++s && (s=argv[1]) != Nullch) {
1133 STRLEN len = strlen(s);
1134 p = savepvn(s, len);
1135 incpush(p, TRUE, TRUE);
1136 sv_catpvn(sv, "-I", 2);
1137 sv_catpvn(sv, p, len);
1138 sv_catpvn(sv, " ", 1);
1142 Perl_croak(aTHX_ "No directory specified for -I");
1146 PL_preprocess = TRUE;
1156 PL_preambleav = newAV();
1157 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1159 PL_Sv = newSVpv("print myconfig();",0);
1161 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1163 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1165 sv_catpv(PL_Sv,"\" Compile-time options:");
1167 sv_catpv(PL_Sv," DEBUGGING");
1169 # ifdef MULTIPLICITY
1170 sv_catpv(PL_Sv," MULTIPLICITY");
1173 sv_catpv(PL_Sv," USE_THREADS");
1175 # ifdef USE_ITHREADS
1176 sv_catpv(PL_Sv," USE_ITHREADS");
1178 # ifdef USE_64_BIT_INT
1179 sv_catpv(PL_Sv," USE_64_BIT_INT");
1181 # ifdef USE_64_BIT_ALL
1182 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1184 # ifdef USE_LONG_DOUBLE
1185 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1187 # ifdef USE_LARGE_FILES
1188 sv_catpv(PL_Sv," USE_LARGE_FILES");
1191 sv_catpv(PL_Sv," USE_SOCKS");
1194 sv_catpv(PL_Sv," PERL_OBJECT");
1196 # ifdef PERL_IMPLICIT_CONTEXT
1197 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1199 # ifdef PERL_IMPLICIT_SYS
1200 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1202 sv_catpv(PL_Sv,"\\n\",");
1204 #if defined(LOCAL_PATCH_COUNT)
1205 if (LOCAL_PATCH_COUNT > 0) {
1207 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1208 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1209 if (PL_localpatches[i])
1210 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1214 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1217 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1219 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1222 sv_catpv(PL_Sv, "; \
1224 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1227 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1230 print \" \\%ENV:\\n @env\\n\" if @env; \
1231 print \" \\@INC:\\n @INC\\n\";");
1234 PL_Sv = newSVpv("config_vars(qw(",0);
1235 sv_catpv(PL_Sv, ++s);
1236 sv_catpv(PL_Sv, "))");
1239 av_push(PL_preambleav, PL_Sv);
1240 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1243 PL_doextract = TRUE;
1251 if (!*++s || isSPACE(*s)) {
1255 /* catch use of gnu style long options */
1256 if (strEQ(s, "version")) {
1260 if (strEQ(s, "help")) {
1267 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1273 #ifndef SECURE_INTERNAL_GETENV
1276 (s = PerlEnv_getenv("PERL5OPT")))
1281 if (*s == '-' && *(s+1) == 'T')
1284 char *popt_copy = Nullch;
1297 if (!strchr("DIMUdmw", *s))
1298 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1302 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1303 s = popt_copy + (s - popt);
1304 d = popt_copy + (d - popt);
1316 scriptname = argv[0];
1319 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1321 else if (scriptname == Nullch) {
1323 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1331 open_script(scriptname,dosearch,sv,&fdscript);
1333 validate_suid(validarg, scriptname,fdscript);
1336 #if defined(SIGCHLD) || defined(SIGCLD)
1339 # define SIGCHLD SIGCLD
1341 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1342 if (sigstate == SIG_IGN) {
1343 if (ckWARN(WARN_SIGNAL))
1344 Perl_warner(aTHX_ WARN_SIGNAL,
1345 "Can't ignore signal CHLD, forcing to default");
1346 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1352 #ifdef MACOS_TRADITIONAL
1353 if (PL_doextract || gMacPerl_AlwaysExtract) {
1358 if (cddir && PerlDir_chdir(cddir) < 0)
1359 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1363 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1364 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1365 CvUNIQUE_on(PL_compcv);
1367 PL_comppad = newAV();
1368 av_push(PL_comppad, Nullsv);
1369 PL_curpad = AvARRAY(PL_comppad);
1370 PL_comppad_name = newAV();
1371 PL_comppad_name_fill = 0;
1372 PL_min_intro_pending = 0;
1375 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1376 PL_curpad[0] = (SV*)newAV();
1377 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1378 CvOWNER(PL_compcv) = 0;
1379 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1380 MUTEX_INIT(CvMUTEXP(PL_compcv));
1381 #endif /* USE_THREADS */
1383 comppadlist = newAV();
1384 AvREAL_off(comppadlist);
1385 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1386 av_store(comppadlist, 1, (SV*)PL_comppad);
1387 CvPADLIST(PL_compcv) = comppadlist;
1390 boot_core_UNIVERSAL();
1392 boot_core_xsutils();
1396 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1398 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1404 # ifdef HAS_SOCKS5_INIT
1405 socks5_init(argv[0]);
1411 init_predump_symbols();
1412 /* init_postdump_symbols not currently designed to be called */
1413 /* more than once (ENV isn't cleared first, for example) */
1414 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1416 init_postdump_symbols(argc,argv,env);
1420 /* now parse the script */
1422 SETERRNO(0,SS$_NORMAL);
1424 #ifdef MACOS_TRADITIONAL
1425 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1427 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1429 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1430 MacPerl_MPWFileName(PL_origfilename));
1434 if (yyparse() || PL_error_count) {
1436 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1438 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1443 CopLINE_set(PL_curcop, 0);
1444 PL_curstash = PL_defstash;
1445 PL_preprocess = FALSE;
1447 SvREFCNT_dec(PL_e_script);
1448 PL_e_script = Nullsv;
1451 /* now that script is parsed, we can modify record separator */
1452 SvREFCNT_dec(PL_rs);
1453 PL_rs = SvREFCNT_inc(PL_nrs);
1454 sv_setsv(get_sv("/", TRUE), PL_rs);
1459 SAVECOPFILE(PL_curcop);
1460 SAVECOPLINE(PL_curcop);
1461 gv_check(PL_defstash);
1468 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1469 dump_mstats("after compilation:");
1478 =for apidoc perl_run
1480 Tells a Perl interpreter to run. See L<perlembed>.
1495 oldscope = PL_scopestack_ix;
1497 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1499 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1505 cxstack_ix = -1; /* start context stack again */
1507 case 0: /* normal completion */
1508 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1513 case 2: /* my_exit() */
1514 while (PL_scopestack_ix > oldscope)
1517 PL_curstash = PL_defstash;
1518 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1519 PL_endav && !PL_minus_c)
1520 call_list(oldscope, PL_endav);
1522 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1523 dump_mstats("after execution: ");
1525 ret = STATUS_NATIVE_EXPORT;
1529 POPSTACK_TO(PL_mainstack);
1532 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1542 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1544 S_vrun_body(pTHX_ va_list args)
1546 I32 oldscope = va_arg(args, I32);
1548 return run_body(oldscope);
1554 S_run_body(pTHX_ I32 oldscope)
1556 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1557 PL_sawampersand ? "Enabling" : "Omitting"));
1559 if (!PL_restartop) {
1560 DEBUG_x(dump_all());
1561 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1562 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1566 #ifdef MACOS_TRADITIONAL
1567 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1569 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1573 if (PERLDB_SINGLE && PL_DBsingle)
1574 sv_setiv(PL_DBsingle, 1);
1576 call_list(oldscope, PL_initav);
1582 PL_op = PL_restartop;
1586 else if (PL_main_start) {
1587 CvDEPTH(PL_main_cv) = 1;
1588 PL_op = PL_main_start;
1598 =for apidoc p||get_sv
1600 Returns the SV of the specified Perl scalar. If C<create> is set and the
1601 Perl variable does not exist then it will be created. If C<create> is not
1602 set and the variable does not exist then NULL is returned.
1608 Perl_get_sv(pTHX_ const char *name, I32 create)
1612 if (name[1] == '\0' && !isALPHA(name[0])) {
1613 PADOFFSET tmp = find_threadsv(name);
1614 if (tmp != NOT_IN_PAD)
1615 return THREADSV(tmp);
1617 #endif /* USE_THREADS */
1618 gv = gv_fetchpv(name, create, SVt_PV);
1625 =for apidoc p||get_av
1627 Returns the AV of the specified Perl array. If C<create> is set and the
1628 Perl variable does not exist then it will be created. If C<create> is not
1629 set and the variable does not exist then NULL is returned.
1635 Perl_get_av(pTHX_ const char *name, I32 create)
1637 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1646 =for apidoc p||get_hv
1648 Returns the HV of the specified Perl hash. If C<create> is set and the
1649 Perl variable does not exist then it will be created. If C<create> is not
1650 set and the variable does not exist then NULL is returned.
1656 Perl_get_hv(pTHX_ const char *name, I32 create)
1658 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1667 =for apidoc p||get_cv
1669 Returns the CV of the specified Perl subroutine. If C<create> is set and
1670 the Perl subroutine does not exist then it will be declared (which has the
1671 same effect as saying C<sub name;>). If C<create> is not set and the
1672 subroutine does not exist then NULL is returned.
1678 Perl_get_cv(pTHX_ const char *name, I32 create)
1680 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1681 /* XXX unsafe for threads if eval_owner isn't held */
1682 /* XXX this is probably not what they think they're getting.
1683 * It has the same effect as "sub name;", i.e. just a forward
1685 if (create && !GvCVu(gv))
1686 return newSUB(start_subparse(FALSE, 0),
1687 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1695 /* Be sure to refetch the stack pointer after calling these routines. */
1698 =for apidoc p||call_argv
1700 Performs a callback to the specified Perl sub. See L<perlcall>.
1706 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1708 /* See G_* flags in cop.h */
1709 /* null terminated arg list */
1716 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1721 return call_pv(sub_name, flags);
1725 =for apidoc p||call_pv
1727 Performs a callback to the specified Perl sub. See L<perlcall>.
1733 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1734 /* name of the subroutine */
1735 /* See G_* flags in cop.h */
1737 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1741 =for apidoc p||call_method
1743 Performs a callback to the specified Perl method. The blessed object must
1744 be on the stack. See L<perlcall>.
1750 Perl_call_method(pTHX_ const char *methname, I32 flags)
1751 /* name of the subroutine */
1752 /* See G_* flags in cop.h */
1754 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1757 /* May be called with any of a CV, a GV, or an SV containing the name. */
1759 =for apidoc p||call_sv
1761 Performs a callback to the Perl sub whose name is in the SV. See
1768 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1769 /* See G_* flags in cop.h */
1772 LOGOP myop; /* fake syntax tree node */
1775 volatile I32 retval = 0;
1777 bool oldcatch = CATCH_GET;
1782 if (flags & G_DISCARD) {
1787 Zero(&myop, 1, LOGOP);
1788 myop.op_next = Nullop;
1789 if (!(flags & G_NOARGS))
1790 myop.op_flags |= OPf_STACKED;
1791 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1792 (flags & G_ARRAY) ? OPf_WANT_LIST :
1797 EXTEND(PL_stack_sp, 1);
1798 *++PL_stack_sp = sv;
1800 oldscope = PL_scopestack_ix;
1802 if (PERLDB_SUB && PL_curstash != PL_debstash
1803 /* Handle first BEGIN of -d. */
1804 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1805 /* Try harder, since this may have been a sighandler, thus
1806 * curstash may be meaningless. */
1807 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1808 && !(flags & G_NODEBUG))
1809 PL_op->op_private |= OPpENTERSUB_DB;
1811 if (flags & G_METHOD) {
1812 Zero(&method_op, 1, UNOP);
1813 method_op.op_next = PL_op;
1814 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1815 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1816 PL_op = (OP*)&method_op;
1819 if (!(flags & G_EVAL)) {
1821 call_body((OP*)&myop, FALSE);
1822 retval = PL_stack_sp - (PL_stack_base + oldmark);
1823 CATCH_SET(oldcatch);
1826 myop.op_other = (OP*)&myop;
1828 /* we're trying to emulate pp_entertry() here */
1830 register PERL_CONTEXT *cx;
1831 I32 gimme = GIMME_V;
1836 push_return(Nullop);
1837 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1839 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1841 PL_in_eval = EVAL_INEVAL;
1842 if (flags & G_KEEPERR)
1843 PL_in_eval |= EVAL_KEEPERR;
1849 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1851 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1858 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1860 call_body((OP*)&myop, FALSE);
1862 retval = PL_stack_sp - (PL_stack_base + oldmark);
1863 if (!(flags & G_KEEPERR))
1870 /* my_exit() was called */
1871 PL_curstash = PL_defstash;
1874 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1875 Perl_croak(aTHX_ "Callback called exit");
1880 PL_op = PL_restartop;
1884 PL_stack_sp = PL_stack_base + oldmark;
1885 if (flags & G_ARRAY)
1889 *++PL_stack_sp = &PL_sv_undef;
1894 if (PL_scopestack_ix > oldscope) {
1898 register PERL_CONTEXT *cx;
1910 if (flags & G_DISCARD) {
1911 PL_stack_sp = PL_stack_base + oldmark;
1920 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1922 S_vcall_body(pTHX_ va_list args)
1924 OP *myop = va_arg(args, OP*);
1925 int is_eval = va_arg(args, int);
1927 call_body(myop, is_eval);
1933 S_call_body(pTHX_ OP *myop, int is_eval)
1935 if (PL_op == myop) {
1937 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1939 PL_op = Perl_pp_entersub(aTHX); /* this does */
1945 /* Eval a string. The G_EVAL flag is always assumed. */
1948 =for apidoc p||eval_sv
1950 Tells Perl to C<eval> the string in the SV.
1956 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1958 /* See G_* flags in cop.h */
1961 UNOP myop; /* fake syntax tree node */
1962 volatile I32 oldmark = SP - PL_stack_base;
1963 volatile I32 retval = 0;
1969 if (flags & G_DISCARD) {
1976 Zero(PL_op, 1, UNOP);
1977 EXTEND(PL_stack_sp, 1);
1978 *++PL_stack_sp = sv;
1979 oldscope = PL_scopestack_ix;
1981 if (!(flags & G_NOARGS))
1982 myop.op_flags = OPf_STACKED;
1983 myop.op_next = Nullop;
1984 myop.op_type = OP_ENTEREVAL;
1985 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1986 (flags & G_ARRAY) ? OPf_WANT_LIST :
1988 if (flags & G_KEEPERR)
1989 myop.op_flags |= OPf_SPECIAL;
1991 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1993 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2000 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2002 call_body((OP*)&myop,TRUE);
2004 retval = PL_stack_sp - (PL_stack_base + oldmark);
2005 if (!(flags & G_KEEPERR))
2012 /* my_exit() was called */
2013 PL_curstash = PL_defstash;
2016 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2017 Perl_croak(aTHX_ "Callback called exit");
2022 PL_op = PL_restartop;
2026 PL_stack_sp = PL_stack_base + oldmark;
2027 if (flags & G_ARRAY)
2031 *++PL_stack_sp = &PL_sv_undef;
2037 if (flags & G_DISCARD) {
2038 PL_stack_sp = PL_stack_base + oldmark;
2048 =for apidoc p||eval_pv
2050 Tells Perl to C<eval> the given string and return an SV* result.
2056 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2059 SV* sv = newSVpv(p, 0);
2061 eval_sv(sv, G_SCALAR);
2068 if (croak_on_error && SvTRUE(ERRSV)) {
2070 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2076 /* Require a module. */
2079 =for apidoc p||require_pv
2081 Tells Perl to C<require> the file named by the string argument. It is
2082 analogous to the Perl code C<eval "require '$file'">. It's even
2083 implemented that way; consider using Perl_load_module instead.
2088 Perl_require_pv(pTHX_ const char *pv)
2092 PUSHSTACKi(PERLSI_REQUIRE);
2094 sv = sv_newmortal();
2095 sv_setpv(sv, "require '");
2098 eval_sv(sv, G_DISCARD);
2104 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2108 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2109 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2113 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2115 /* This message really ought to be max 23 lines.
2116 * Removed -h because the user already knows that option. Others? */
2118 static char *usage_msg[] = {
2119 "-0[octal] specify record separator (\\0, if no argument)",
2120 "-a autosplit mode with -n or -p (splits $_ into @F)",
2121 "-C enable native wide character system interfaces",
2122 "-c check syntax only (runs BEGIN and CHECK blocks)",
2123 "-d[:debugger] run program under debugger",
2124 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2125 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2126 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2127 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2128 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2129 "-l[octal] enable line ending processing, specifies line terminator",
2130 "-[mM][-]module execute `use/no module...' before executing program",
2131 "-n assume 'while (<>) { ... }' loop around program",
2132 "-p assume loop like -n but print line also, like sed",
2133 "-P run program through C preprocessor before compilation",
2134 "-s enable rudimentary parsing for switches after programfile",
2135 "-S look for programfile using PATH environment variable",
2136 "-T enable tainting checks",
2137 "-u dump core after parsing program",
2138 "-U allow unsafe operations",
2139 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2140 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2141 "-w enable many useful warnings (RECOMMENDED)",
2142 "-W enable all warnings",
2143 "-X disable all warnings",
2144 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2148 char **p = usage_msg;
2150 PerlIO_printf(PerlIO_stdout(),
2151 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2154 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2157 /* This routine handles any switches that can be given during run */
2160 Perl_moreswitches(pTHX_ char *s)
2168 numlen = 0; /* disallow underscores */
2169 rschar = (U32)scan_oct(s, 4, &numlen);
2170 SvREFCNT_dec(PL_nrs);
2171 if (rschar & ~((U8)~0))
2172 PL_nrs = &PL_sv_undef;
2173 else if (!rschar && numlen >= 2)
2174 PL_nrs = newSVpvn("", 0);
2177 PL_nrs = newSVpvn(&ch, 1);
2182 PL_widesyscalls = TRUE;
2187 PL_splitstr = savepv(s + 1);
2201 /* The following permits -d:Mod to accepts arguments following an =
2202 in the fashion that -MSome::Mod does. */
2203 if (*s == ':' || *s == '=') {
2206 sv = newSVpv("use Devel::", 0);
2208 /* We now allow -d:Module=Foo,Bar */
2209 while(isALNUM(*s) || *s==':') ++s;
2211 sv_catpv(sv, start);
2213 sv_catpvn(sv, start, s-start);
2214 sv_catpv(sv, " split(/,/,q{");
2219 my_setenv("PERL5DB", SvPV(sv, PL_na));
2222 PL_perldb = PERLDB_ALL;
2230 if (isALPHA(s[1])) {
2231 /* if adding extra options, remember to update DEBUG_MASK */
2232 static char debopts[] = "psltocPmfrxuLHXDSTR";
2235 for (s++; *s && (d = strchr(debopts,*s)); s++)
2236 PL_debug |= 1 << (d - debopts);
2239 PL_debug = atoi(s+1);
2240 for (s++; isDIGIT(*s); s++) ;
2242 PL_debug |= DEBUG_TOP_FLAG;
2244 if (ckWARN_d(WARN_DEBUGGING))
2245 Perl_warner(aTHX_ WARN_DEBUGGING,
2246 "Recompile perl with -DDEBUGGING to use -D switch\n");
2247 for (s++; isALNUM(*s); s++) ;
2253 usage(PL_origargv[0]);
2257 Safefree(PL_inplace);
2258 PL_inplace = savepv(s+1);
2260 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2263 if (*s == '-') /* Additional switches on #! line. */
2267 case 'I': /* -I handled both here and in parse_perl() */
2270 while (*s && isSPACE(*s))
2275 /* ignore trailing spaces (possibly followed by other switches) */
2277 for (e = p; *e && !isSPACE(*e); e++) ;
2281 } while (*p && *p != '-');
2282 e = savepvn(s, e-s);
2283 incpush(e, TRUE, TRUE);
2290 Perl_croak(aTHX_ "No directory specified for -I");
2296 SvREFCNT_dec(PL_ors_sv);
2300 PL_ors_sv = newSVpvn("\n",1);
2301 numlen = 0; /* disallow underscores */
2302 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2306 if (RsPARA(PL_nrs)) {
2307 PL_ors_sv = newSVpvn("\n\n",2);
2310 PL_ors_sv = newSVsv(PL_nrs);
2315 forbid_setid("-M"); /* XXX ? */
2318 forbid_setid("-m"); /* XXX ? */
2323 /* -M-foo == 'no foo' */
2324 if (*s == '-') { use = "no "; ++s; }
2325 sv = newSVpv(use,0);
2327 /* We allow -M'Module qw(Foo Bar)' */
2328 while(isALNUM(*s) || *s==':') ++s;
2330 sv_catpv(sv, start);
2331 if (*(start-1) == 'm') {
2333 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2334 sv_catpv( sv, " ()");
2338 Perl_croak(aTHX_ "Module name required with -%c option",
2340 sv_catpvn(sv, start, s-start);
2341 sv_catpv(sv, " split(/,/,q{");
2347 PL_preambleav = newAV();
2348 av_push(PL_preambleav, sv);
2351 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2363 PL_doswitches = TRUE;
2368 Perl_croak(aTHX_ "Too late for \"-T\" option");
2372 #ifdef MACOS_TRADITIONAL
2373 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2375 PL_do_undump = TRUE;
2384 PerlIO_printf(PerlIO_stdout(),
2385 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2386 PL_patchlevel, ARCHNAME));
2388 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2389 PerlIO_printf(PerlIO_stdout(),
2390 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2391 PerlIO_printf(PerlIO_stdout(),
2392 Perl_form(aTHX_ " built under %s at %s %s\n",
2393 OSNAME, __DATE__, __TIME__));
2394 PerlIO_printf(PerlIO_stdout(),
2395 Perl_form(aTHX_ " OS Specific Release: %s\n",
2399 #if defined(LOCAL_PATCH_COUNT)
2400 if (LOCAL_PATCH_COUNT > 0)
2401 PerlIO_printf(PerlIO_stdout(),
2402 "\n(with %d registered patch%s, "
2403 "see perl -V for more detail)",
2404 (int)LOCAL_PATCH_COUNT,
2405 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2408 PerlIO_printf(PerlIO_stdout(),
2409 "\n\nCopyright 1987-2001, Larry Wall\n");
2410 #ifdef MACOS_TRADITIONAL
2411 PerlIO_printf(PerlIO_stdout(),
2412 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2415 PerlIO_printf(PerlIO_stdout(),
2416 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2419 PerlIO_printf(PerlIO_stdout(),
2420 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2421 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2424 PerlIO_printf(PerlIO_stdout(),
2425 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2426 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2429 PerlIO_printf(PerlIO_stdout(),
2430 "atariST series port, ++jrb bammi@cadence.com\n");
2433 PerlIO_printf(PerlIO_stdout(),
2434 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2437 PerlIO_printf(PerlIO_stdout(),
2438 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2441 PerlIO_printf(PerlIO_stdout(),
2442 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2445 PerlIO_printf(PerlIO_stdout(),
2446 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2449 PerlIO_printf(PerlIO_stdout(),
2450 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2453 PerlIO_printf(PerlIO_stdout(),
2454 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2457 PerlIO_printf(PerlIO_stdout(),
2458 "MiNT port by Guido Flohr, 1997-1999\n");
2461 PerlIO_printf(PerlIO_stdout(),
2462 "EPOC port by Olaf Flebbe, 1999-2000\n");
2465 printf("WINCE port by Rainer Keuchel, 2001\n");
2466 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2469 #ifdef BINARY_BUILD_NOTICE
2470 BINARY_BUILD_NOTICE;
2472 PerlIO_printf(PerlIO_stdout(),
2474 Perl may be copied only under the terms of either the Artistic License or the\n\
2475 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2476 Complete documentation for Perl, including FAQ lists, should be found on\n\
2477 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2478 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2481 if (! (PL_dowarn & G_WARN_ALL_MASK))
2482 PL_dowarn |= G_WARN_ON;
2486 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2487 PL_compiling.cop_warnings = pWARN_ALL ;
2491 PL_dowarn = G_WARN_ALL_OFF;
2492 PL_compiling.cop_warnings = pWARN_NONE ;
2497 if (s[1] == '-') /* Additional switches on #! line. */
2502 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2508 #ifdef ALTERNATE_SHEBANG
2509 case 'S': /* OS/2 needs -S on "extproc" line. */
2517 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2522 /* compliments of Tom Christiansen */
2524 /* unexec() can be found in the Gnu emacs distribution */
2525 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2528 Perl_my_unexec(pTHX)
2536 prog = newSVpv(BIN_EXP, 0);
2537 sv_catpv(prog, "/perl");
2538 file = newSVpv(PL_origfilename, 0);
2539 sv_catpv(file, ".perldump");
2541 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2542 /* unexec prints msg to stderr in case of failure */
2543 PerlProc_exit(status);
2546 # include <lib$routines.h>
2547 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2549 ABORT(); /* for use with undump */
2554 /* initialize curinterp */
2559 #ifdef PERL_OBJECT /* XXX kludge */
2562 PL_chopset = " \n-"; \
2563 PL_copline = NOLINE; \
2564 PL_curcop = &PL_compiling;\
2565 PL_curcopdb = NULL; \
2567 PL_dumpindent = 4; \
2568 PL_laststatval = -1; \
2569 PL_laststype = OP_STAT; \
2570 PL_maxscream = -1; \
2571 PL_maxsysfd = MAXSYSFD; \
2572 PL_statname = Nullsv; \
2573 PL_tmps_floor = -1; \
2575 PL_op_mask = NULL; \
2576 PL_laststatval = -1; \
2577 PL_laststype = OP_STAT; \
2578 PL_mess_sv = Nullsv; \
2579 PL_splitstr = " "; \
2580 PL_generation = 100; \
2581 PL_exitlist = NULL; \
2582 PL_exitlistlen = 0; \
2584 PL_in_clean_objs = FALSE; \
2585 PL_in_clean_all = FALSE; \
2586 PL_profiledata = NULL; \
2588 PL_rsfp_filters = Nullav; \
2593 # ifdef MULTIPLICITY
2594 # define PERLVAR(var,type)
2595 # define PERLVARA(var,n,type)
2596 # if defined(PERL_IMPLICIT_CONTEXT)
2597 # if defined(USE_THREADS)
2598 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2599 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2600 # else /* !USE_THREADS */
2601 # define PERLVARI(var,type,init) aTHX->var = init;
2602 # define PERLVARIC(var,type,init) aTHX->var = init;
2603 # endif /* USE_THREADS */
2605 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2606 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2608 # include "intrpvar.h"
2609 # ifndef USE_THREADS
2610 # include "thrdvar.h"
2617 # define PERLVAR(var,type)
2618 # define PERLVARA(var,n,type)
2619 # define PERLVARI(var,type,init) PL_##var = init;
2620 # define PERLVARIC(var,type,init) PL_##var = init;
2621 # include "intrpvar.h"
2622 # ifndef USE_THREADS
2623 # include "thrdvar.h"
2635 S_init_main_stash(pTHX)
2639 /* Note that strtab is a rather special HV. Assumptions are made
2640 about not iterating on it, and not adding tie magic to it.
2641 It is properly deallocated in perl_destruct() */
2642 PL_strtab = newHV();
2644 MUTEX_INIT(&PL_strtab_mutex);
2646 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2647 hv_ksplit(PL_strtab, 512);
2649 PL_curstash = PL_defstash = newHV();
2650 PL_curstname = newSVpvn("main",4);
2651 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2652 SvREFCNT_dec(GvHV(gv));
2653 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2655 HvNAME(PL_defstash) = savepv("main");
2656 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2657 GvMULTI_on(PL_incgv);
2658 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2659 GvMULTI_on(PL_hintgv);
2660 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2661 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2662 GvMULTI_on(PL_errgv);
2663 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2664 GvMULTI_on(PL_replgv);
2665 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2666 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2667 sv_setpvn(ERRSV, "", 0);
2668 PL_curstash = PL_defstash;
2669 CopSTASH_set(&PL_compiling, PL_defstash);
2670 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2671 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2672 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2673 /* We must init $/ before switches are processed. */
2674 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2678 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2683 PL_origfilename = savepv("-e");
2686 /* if find_script() returns, it returns a malloc()-ed value */
2687 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2689 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2690 char *s = scriptname + 8;
2691 *fdscript = atoi(s);
2695 scriptname = savepv(s + 1);
2696 Safefree(PL_origfilename);
2697 PL_origfilename = scriptname;
2703 Safefree(CopFILE(PL_curcop));
2705 SvREFCNT_dec(CopFILEGV(PL_curcop));
2707 CopFILE_set(PL_curcop, PL_origfilename);
2708 if (strEQ(PL_origfilename,"-"))
2710 if (*fdscript >= 0) {
2711 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2712 #if defined(HAS_FCNTL) && defined(F_SETFD)
2714 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2717 else if (PL_preprocess) {
2718 char *cpp_cfg = CPPSTDIN;
2719 SV *cpp = newSVpvn("",0);
2720 SV *cmd = NEWSV(0,0);
2722 if (strEQ(cpp_cfg, "cppstdin"))
2723 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2724 sv_catpv(cpp, cpp_cfg);
2726 sv_catpvn(sv, "-I", 2);
2727 sv_catpv(sv,PRIVLIB_EXP);
2729 DEBUG_P(PerlIO_printf(Perl_debug_log,
2730 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2731 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2732 #if defined(MSDOS) || defined(WIN32)
2733 Perl_sv_setpvf(aTHX_ cmd, "\
2734 sed %s -e \"/^[^#]/b\" \
2735 -e \"/^#[ ]*include[ ]/b\" \
2736 -e \"/^#[ ]*define[ ]/b\" \
2737 -e \"/^#[ ]*if[ ]/b\" \
2738 -e \"/^#[ ]*ifdef[ ]/b\" \
2739 -e \"/^#[ ]*ifndef[ ]/b\" \
2740 -e \"/^#[ ]*else/b\" \
2741 -e \"/^#[ ]*elif[ ]/b\" \
2742 -e \"/^#[ ]*undef[ ]/b\" \
2743 -e \"/^#[ ]*endif/b\" \
2745 %s | %"SVf" -C %"SVf" %s",
2746 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2749 Perl_sv_setpvf(aTHX_ cmd, "\
2750 %s %s -e '/^[^#]/b' \
2751 -e '/^#[ ]*include[ ]/b' \
2752 -e '/^#[ ]*define[ ]/b' \
2753 -e '/^#[ ]*if[ ]/b' \
2754 -e '/^#[ ]*ifdef[ ]/b' \
2755 -e '/^#[ ]*ifndef[ ]/b' \
2756 -e '/^#[ ]*else/b' \
2757 -e '/^#[ ]*elif[ ]/b' \
2758 -e '/^#[ ]*undef[ ]/b' \
2759 -e '/^#[ ]*endif/b' \
2761 %s | %"SVf" %"SVf" %s",
2763 Perl_sv_setpvf(aTHX_ cmd, "\
2764 %s %s -e '/^[^#]/b' \
2765 -e '/^#[ ]*include[ ]/b' \
2766 -e '/^#[ ]*define[ ]/b' \
2767 -e '/^#[ ]*if[ ]/b' \
2768 -e '/^#[ ]*ifdef[ ]/b' \
2769 -e '/^#[ ]*ifndef[ ]/b' \
2770 -e '/^#[ ]*else/b' \
2771 -e '/^#[ ]*elif[ ]/b' \
2772 -e '/^#[ ]*undef[ ]/b' \
2773 -e '/^#[ ]*endif/b' \
2775 %s | %"SVf" -C %"SVf" %s",
2782 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2784 scriptname, cpp, sv, CPPMINUS);
2785 PL_doextract = FALSE;
2786 #ifdef IAMSUID /* actually, this is caught earlier */
2787 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2789 (void)seteuid(PL_uid); /* musn't stay setuid root */
2792 (void)setreuid((Uid_t)-1, PL_uid);
2794 #ifdef HAS_SETRESUID
2795 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2797 PerlProc_setuid(PL_uid);
2801 if (PerlProc_geteuid() != PL_uid)
2802 Perl_croak(aTHX_ "Can't do seteuid!\n");
2804 #endif /* IAMSUID */
2805 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2809 else if (!*scriptname) {
2810 forbid_setid("program input from stdin");
2811 PL_rsfp = PerlIO_stdin();
2814 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2815 #if defined(HAS_FCNTL) && defined(F_SETFD)
2817 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2822 #ifndef IAMSUID /* in case script is not readable before setuid */
2824 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2825 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2828 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2829 (int)PERL_REVISION, (int)PERL_VERSION,
2830 (int)PERL_SUBVERSION), PL_origargv);
2831 Perl_croak(aTHX_ "Can't do setuid\n");
2837 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2840 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2841 CopFILE(PL_curcop), Strerror(errno));
2847 * I_SYSSTATVFS HAS_FSTATVFS
2849 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2850 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2851 * here so that metaconfig picks them up. */
2855 S_fd_on_nosuid_fs(pTHX_ int fd)
2857 int check_okay = 0; /* able to do all the required sys/libcalls */
2858 int on_nosuid = 0; /* the fd is on a nosuid fs */
2860 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2861 * fstatvfs() is UNIX98.
2862 * fstatfs() is 4.3 BSD.
2863 * ustat()+getmnt() is pre-4.3 BSD.
2864 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2865 * an irrelevant filesystem while trying to reach the right one.
2868 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2870 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2871 defined(HAS_FSTATVFS)
2872 # define FD_ON_NOSUID_CHECK_OKAY
2873 struct statvfs stfs;
2875 check_okay = fstatvfs(fd, &stfs) == 0;
2876 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2877 # endif /* fstatvfs */
2879 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2880 defined(PERL_MOUNT_NOSUID) && \
2881 defined(HAS_FSTATFS) && \
2882 defined(HAS_STRUCT_STATFS) && \
2883 defined(HAS_STRUCT_STATFS_F_FLAGS)
2884 # define FD_ON_NOSUID_CHECK_OKAY
2887 check_okay = fstatfs(fd, &stfs) == 0;
2888 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2889 # endif /* fstatfs */
2891 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2892 defined(PERL_MOUNT_NOSUID) && \
2893 defined(HAS_FSTAT) && \
2894 defined(HAS_USTAT) && \
2895 defined(HAS_GETMNT) && \
2896 defined(HAS_STRUCT_FS_DATA) && \
2898 # define FD_ON_NOSUID_CHECK_OKAY
2901 if (fstat(fd, &fdst) == 0) {
2903 if (ustat(fdst.st_dev, &us) == 0) {
2905 /* NOSTAT_ONE here because we're not examining fields which
2906 * vary between that case and STAT_ONE. */
2907 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2908 size_t cmplen = sizeof(us.f_fname);
2909 if (sizeof(fsd.fd_req.path) < cmplen)
2910 cmplen = sizeof(fsd.fd_req.path);
2911 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2912 fdst.st_dev == fsd.fd_req.dev) {
2914 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2920 # endif /* fstat+ustat+getmnt */
2922 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2923 defined(HAS_GETMNTENT) && \
2924 defined(HAS_HASMNTOPT) && \
2925 defined(MNTOPT_NOSUID)
2926 # define FD_ON_NOSUID_CHECK_OKAY
2927 FILE *mtab = fopen("/etc/mtab", "r");
2928 struct mntent *entry;
2929 struct stat stb, fsb;
2931 if (mtab && (fstat(fd, &stb) == 0)) {
2932 while (entry = getmntent(mtab)) {
2933 if (stat(entry->mnt_dir, &fsb) == 0
2934 && fsb.st_dev == stb.st_dev)
2936 /* found the filesystem */
2938 if (hasmntopt(entry, MNTOPT_NOSUID))
2941 } /* A single fs may well fail its stat(). */
2946 # endif /* getmntent+hasmntopt */
2949 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2952 #endif /* IAMSUID */
2955 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2961 /* do we need to emulate setuid on scripts? */
2963 /* This code is for those BSD systems that have setuid #! scripts disabled
2964 * in the kernel because of a security problem. Merely defining DOSUID
2965 * in perl will not fix that problem, but if you have disabled setuid
2966 * scripts in the kernel, this will attempt to emulate setuid and setgid
2967 * on scripts that have those now-otherwise-useless bits set. The setuid
2968 * root version must be called suidperl or sperlN.NNN. If regular perl
2969 * discovers that it has opened a setuid script, it calls suidperl with
2970 * the same argv that it had. If suidperl finds that the script it has
2971 * just opened is NOT setuid root, it sets the effective uid back to the
2972 * uid. We don't just make perl setuid root because that loses the
2973 * effective uid we had before invoking perl, if it was different from the
2976 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2977 * be defined in suidperl only. suidperl must be setuid root. The
2978 * Configure script will set this up for you if you want it.
2984 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2985 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2986 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2991 #ifndef HAS_SETREUID
2992 /* On this access check to make sure the directories are readable,
2993 * there is actually a small window that the user could use to make
2994 * filename point to an accessible directory. So there is a faint
2995 * chance that someone could execute a setuid script down in a
2996 * non-accessible directory. I don't know what to do about that.
2997 * But I don't think it's too important. The manual lies when
2998 * it says access() is useful in setuid programs.
3000 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3001 Perl_croak(aTHX_ "Permission denied");
3003 /* If we can swap euid and uid, then we can determine access rights
3004 * with a simple stat of the file, and then compare device and
3005 * inode to make sure we did stat() on the same file we opened.
3006 * Then we just have to make sure he or she can execute it.
3009 struct stat tmpstatbuf;
3013 setreuid(PL_euid,PL_uid) < 0
3016 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3019 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3020 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3021 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3022 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3023 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3024 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3025 Perl_croak(aTHX_ "Permission denied");
3027 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3028 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3029 (void)PerlIO_close(PL_rsfp);
3030 Perl_croak(aTHX_ "Permission denied\n");
3034 setreuid(PL_uid,PL_euid) < 0
3036 # if defined(HAS_SETRESUID)
3037 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3040 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3041 Perl_croak(aTHX_ "Can't reswap uid and euid");
3042 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3043 Perl_croak(aTHX_ "Permission denied\n");
3045 #endif /* HAS_SETREUID */
3046 #endif /* IAMSUID */
3048 if (!S_ISREG(PL_statbuf.st_mode))
3049 Perl_croak(aTHX_ "Permission denied");
3050 if (PL_statbuf.st_mode & S_IWOTH)
3051 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3052 PL_doswitches = FALSE; /* -s is insecure in suid */
3053 CopLINE_inc(PL_curcop);
3054 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3055 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3056 Perl_croak(aTHX_ "No #! line");
3057 s = SvPV(PL_linestr,n_a)+2;
3059 while (!isSPACE(*s)) s++;
3060 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3061 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3062 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3063 Perl_croak(aTHX_ "Not a perl script");
3064 while (*s == ' ' || *s == '\t') s++;
3066 * #! arg must be what we saw above. They can invoke it by
3067 * mentioning suidperl explicitly, but they may not add any strange
3068 * arguments beyond what #! says if they do invoke suidperl that way.
3070 len = strlen(validarg);
3071 if (strEQ(validarg," PHOOEY ") ||
3072 strnNE(s,validarg,len) || !isSPACE(s[len]))
3073 Perl_croak(aTHX_ "Args must match #! line");
3076 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3077 PL_euid == PL_statbuf.st_uid)
3079 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3080 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3081 #endif /* IAMSUID */
3083 if (PL_euid) { /* oops, we're not the setuid root perl */
3084 (void)PerlIO_close(PL_rsfp);
3087 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3088 (int)PERL_REVISION, (int)PERL_VERSION,
3089 (int)PERL_SUBVERSION), PL_origargv);
3091 Perl_croak(aTHX_ "Can't do setuid\n");
3094 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3096 (void)setegid(PL_statbuf.st_gid);
3099 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3101 #ifdef HAS_SETRESGID
3102 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3104 PerlProc_setgid(PL_statbuf.st_gid);
3108 if (PerlProc_getegid() != PL_statbuf.st_gid)
3109 Perl_croak(aTHX_ "Can't do setegid!\n");
3111 if (PL_statbuf.st_mode & S_ISUID) {
3112 if (PL_statbuf.st_uid != PL_euid)
3114 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3117 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3119 #ifdef HAS_SETRESUID
3120 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3122 PerlProc_setuid(PL_statbuf.st_uid);
3126 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3127 Perl_croak(aTHX_ "Can't do seteuid!\n");
3129 else if (PL_uid) { /* oops, mustn't run as root */
3131 (void)seteuid((Uid_t)PL_uid);
3134 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3136 #ifdef HAS_SETRESUID
3137 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3139 PerlProc_setuid((Uid_t)PL_uid);
3143 if (PerlProc_geteuid() != PL_uid)
3144 Perl_croak(aTHX_ "Can't do seteuid!\n");
3147 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3148 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3151 else if (PL_preprocess)
3152 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3153 else if (fdscript >= 0)
3154 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3156 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3158 /* We absolutely must clear out any saved ids here, so we */
3159 /* exec the real perl, substituting fd script for scriptname. */
3160 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3161 PerlIO_rewind(PL_rsfp);
3162 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3163 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3164 if (!PL_origargv[which])
3165 Perl_croak(aTHX_ "Permission denied");
3166 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3167 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3168 #if defined(HAS_FCNTL) && defined(F_SETFD)
3169 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3171 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3172 (int)PERL_REVISION, (int)PERL_VERSION,
3173 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3174 Perl_croak(aTHX_ "Can't do setuid\n");
3175 #endif /* IAMSUID */
3177 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3178 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3179 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3180 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3182 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3185 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3186 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3187 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3188 /* not set-id, must be wrapped */
3194 S_find_beginning(pTHX)
3196 register char *s, *s2;
3198 /* skip forward in input to the real script? */
3201 #ifdef MACOS_TRADITIONAL
3202 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3204 while (PL_doextract || gMacPerl_AlwaysExtract) {
3205 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3206 if (!gMacPerl_AlwaysExtract)
3207 Perl_croak(aTHX_ "No Perl script found in input\n");
3209 if (PL_doextract) /* require explicit override ? */
3210 if (!OverrideExtract(PL_origfilename))
3211 Perl_croak(aTHX_ "User aborted script\n");
3213 PL_doextract = FALSE;
3215 /* Pater peccavi, file does not have #! */
3216 PerlIO_rewind(PL_rsfp);
3221 while (PL_doextract) {
3222 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3223 Perl_croak(aTHX_ "No Perl script found in input\n");
3226 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3227 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3228 PL_doextract = FALSE;
3229 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3231 while (*s == ' ' || *s == '\t') s++;
3233 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3234 if (strnEQ(s2-4,"perl",4))
3236 while ((s = moreswitches(s)))
3239 #ifdef MACOS_TRADITIONAL
3250 PL_uid = PerlProc_getuid();
3251 PL_euid = PerlProc_geteuid();
3252 PL_gid = PerlProc_getgid();
3253 PL_egid = PerlProc_getegid();
3255 PL_uid |= PL_gid << 16;
3256 PL_euid |= PL_egid << 16;
3258 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3262 S_forbid_setid(pTHX_ char *s)
3264 if (PL_euid != PL_uid)
3265 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3266 if (PL_egid != PL_gid)
3267 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3271 Perl_init_debugger(pTHX)
3273 HV *ostash = PL_curstash;
3275 PL_curstash = PL_debstash;
3276 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3277 AvREAL_off(PL_dbargs);
3278 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3279 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3280 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3281 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3282 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3283 sv_setiv(PL_DBsingle, 0);
3284 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3285 sv_setiv(PL_DBtrace, 0);
3286 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3287 sv_setiv(PL_DBsignal, 0);
3288 PL_curstash = ostash;
3291 #ifndef STRESS_REALLOC
3292 #define REASONABLE(size) (size)
3294 #define REASONABLE(size) (1) /* unreasonable */
3298 Perl_init_stacks(pTHX)
3300 /* start with 128-item stack and 8K cxstack */
3301 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3302 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3303 PL_curstackinfo->si_type = PERLSI_MAIN;
3304 PL_curstack = PL_curstackinfo->si_stack;
3305 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3307 PL_stack_base = AvARRAY(PL_curstack);
3308 PL_stack_sp = PL_stack_base;
3309 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3311 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3314 PL_tmps_max = REASONABLE(128);
3316 New(54,PL_markstack,REASONABLE(32),I32);
3317 PL_markstack_ptr = PL_markstack;
3318 PL_markstack_max = PL_markstack + REASONABLE(32);
3322 New(54,PL_scopestack,REASONABLE(32),I32);
3323 PL_scopestack_ix = 0;
3324 PL_scopestack_max = REASONABLE(32);
3326 New(54,PL_savestack,REASONABLE(128),ANY);
3327 PL_savestack_ix = 0;
3328 PL_savestack_max = REASONABLE(128);
3330 New(54,PL_retstack,REASONABLE(16),OP*);
3332 PL_retstack_max = REASONABLE(16);
3340 while (PL_curstackinfo->si_next)
3341 PL_curstackinfo = PL_curstackinfo->si_next;
3342 while (PL_curstackinfo) {
3343 PERL_SI *p = PL_curstackinfo->si_prev;
3344 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3345 Safefree(PL_curstackinfo->si_cxstack);
3346 Safefree(PL_curstackinfo);
3347 PL_curstackinfo = p;
3349 Safefree(PL_tmps_stack);
3350 Safefree(PL_markstack);
3351 Safefree(PL_scopestack);
3352 Safefree(PL_savestack);
3353 Safefree(PL_retstack);
3357 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3368 lex_start(PL_linestr);
3370 PL_subname = newSVpvn("main",4);
3374 S_init_predump_symbols(pTHX)
3379 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3380 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3381 GvMULTI_on(PL_stdingv);
3382 io = GvIOp(PL_stdingv);
3383 IoTYPE(io) = IoTYPE_RDONLY;
3384 IoIFP(io) = PerlIO_stdin();
3385 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3387 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3389 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3392 IoTYPE(io) = IoTYPE_WRONLY;
3393 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3395 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3397 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3399 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3400 GvMULTI_on(PL_stderrgv);
3401 io = GvIOp(PL_stderrgv);
3402 IoTYPE(io) = IoTYPE_WRONLY;
3403 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3404 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3406 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3408 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3411 Safefree(PL_osname);
3412 PL_osname = savepv(OSNAME);
3416 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3421 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3422 char **dup_env_base = 0;
3423 int dup_env_count = 0;
3426 argc--,argv++; /* skip name of script */
3427 if (PL_doswitches) {
3428 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3431 if (argv[0][1] == '-' && !argv[0][2]) {
3435 if ((s = strchr(argv[0], '='))) {
3437 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3440 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3443 PL_toptarget = NEWSV(0,0);
3444 sv_upgrade(PL_toptarget, SVt_PVFM);
3445 sv_setpvn(PL_toptarget, "", 0);
3446 PL_bodytarget = NEWSV(0,0);
3447 sv_upgrade(PL_bodytarget, SVt_PVFM);
3448 sv_setpvn(PL_bodytarget, "", 0);
3449 PL_formtarget = PL_bodytarget;
3452 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3453 #ifdef MACOS_TRADITIONAL
3454 /* $0 is not majick on a Mac */
3455 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3457 sv_setpv(GvSV(tmpgv),PL_origfilename);
3458 magicname("0", "0", 1);
3461 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3463 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3465 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3467 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3468 GvMULTI_on(PL_argvgv);
3469 (void)gv_AVadd(PL_argvgv);
3470 av_clear(GvAVn(PL_argvgv));
3471 for (; argc > 0; argc--,argv++) {
3472 SV *sv = newSVpv(argv[0],0);
3473 av_push(GvAVn(PL_argvgv),sv);
3474 if (PL_widesyscalls)
3475 (void)sv_utf8_decode(sv);
3478 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3480 GvMULTI_on(PL_envgv);
3481 hv = GvHVn(PL_envgv);
3482 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3483 #ifdef USE_ENVIRON_ARRAY
3484 /* Note that if the supplied env parameter is actually a copy
3485 of the global environ then it may now point to free'd memory
3486 if the environment has been modified since. To avoid this
3487 problem we treat env==NULL as meaning 'use the default'
3492 environ[0] = Nullch;
3493 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3496 for (env_base = env; *env; env++)
3498 if ((dup_env_base = (char **)
3499 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3501 for (env = env_base, dup_env = dup_env_base;
3504 /* With environ one needs to use safesysmalloc(). */
3505 *dup_env = safesysmalloc(strlen(*env) + 1);
3506 (void)strcpy(*dup_env, *env);
3512 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3514 for (; *env; env++) {
3515 if (!(s = strchr(*env,'=')))
3521 sv = newSVpv(s--,0);
3522 (void)hv_store(hv, *env, s - *env, sv, 0);
3525 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3528 for (dup_env = dup_env_base; *dup_env; dup_env++)
3529 safesysfree(*dup_env);
3530 safesysfree(dup_env_base);
3532 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3533 #endif /* USE_ENVIRON_ARRAY */
3536 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3537 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3541 S_init_perllib(pTHX)
3546 s = PerlEnv_getenv("PERL5LIB");
3548 incpush(s, TRUE, TRUE);
3550 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3552 /* Treat PERL5?LIB as a possible search list logical name -- the
3553 * "natural" VMS idiom for a Unix path string. We allow each
3554 * element to be a set of |-separated directories for compatibility.
3558 if (my_trnlnm("PERL5LIB",buf,0))
3559 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3561 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3565 /* Use the ~-expanded versions of APPLLIB (undocumented),
3566 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3569 incpush(APPLLIB_EXP, TRUE, TRUE);
3573 incpush(ARCHLIB_EXP, FALSE, FALSE);
3575 #ifdef MACOS_TRADITIONAL
3577 struct stat tmpstatbuf;
3578 SV * privdir = NEWSV(55, 0);
3579 char * macperl = PerlEnv_getenv("MACPERL");
3584 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3585 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3586 incpush(SvPVX(privdir), TRUE, FALSE);
3587 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3588 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3589 incpush(SvPVX(privdir), TRUE, FALSE);
3591 SvREFCNT_dec(privdir);
3594 incpush(":", FALSE, FALSE);
3597 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3600 incpush(PRIVLIB_EXP, TRUE, FALSE);
3602 incpush(PRIVLIB_EXP, FALSE, FALSE);
3606 /* sitearch is always relative to sitelib on Windows for
3607 * DLL-based path intuition to work correctly */
3608 # if !defined(WIN32)
3609 incpush(SITEARCH_EXP, FALSE, FALSE);
3615 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3617 incpush(SITELIB_EXP, FALSE, FALSE);
3621 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3622 incpush(SITELIB_STEM, FALSE, TRUE);
3625 #ifdef PERL_VENDORARCH_EXP
3626 /* vendorarch is always relative to vendorlib on Windows for
3627 * DLL-based path intuition to work correctly */
3628 # if !defined(WIN32)
3629 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3633 #ifdef PERL_VENDORLIB_EXP
3635 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3637 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3641 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3642 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3645 #ifdef PERL_OTHERLIBDIRS
3646 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3650 incpush(".", FALSE, FALSE);
3651 #endif /* MACOS_TRADITIONAL */
3654 #if defined(DOSISH) || defined(EPOC)
3655 # define PERLLIB_SEP ';'
3658 # define PERLLIB_SEP '|'
3660 # if defined(MACOS_TRADITIONAL)
3661 # define PERLLIB_SEP ','
3663 # define PERLLIB_SEP ':'
3667 #ifndef PERLLIB_MANGLE
3668 # define PERLLIB_MANGLE(s,n) (s)
3672 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3674 SV *subdir = Nullsv;
3679 if (addsubdirs || addoldvers) {
3680 subdir = sv_newmortal();
3683 /* Break at all separators */
3685 SV *libdir = NEWSV(55,0);
3688 /* skip any consecutive separators */
3689 while ( *p == PERLLIB_SEP ) {
3690 /* Uncomment the next line for PATH semantics */
3691 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3695 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3696 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3701 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3702 p = Nullch; /* break out */
3704 #ifdef MACOS_TRADITIONAL
3705 if (!strchr(SvPVX(libdir), ':'))
3706 sv_insert(libdir, 0, 0, ":", 1);
3707 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3708 sv_catpv(libdir, ":");
3712 * BEFORE pushing libdir onto @INC we may first push version- and
3713 * archname-specific sub-directories.
3715 if (addsubdirs || addoldvers) {
3716 #ifdef PERL_INC_VERSION_LIST
3717 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3718 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3719 const char **incver;
3721 struct stat tmpstatbuf;
3726 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3728 while (unix[len-1] == '/') len--; /* Cosmetic */
3729 sv_usepvn(libdir,unix,len);
3732 PerlIO_printf(Perl_error_log,
3733 "Failed to unixify @INC element \"%s\"\n",
3737 #ifdef MACOS_TRADITIONAL
3738 #define PERL_AV_SUFFIX_FMT ""
3739 #define PERL_ARCH_FMT "%s:"
3740 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3742 #define PERL_AV_SUFFIX_FMT "/"
3743 #define PERL_ARCH_FMT "/%s"
3744 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3746 /* .../version/archname if -d .../version/archname */
3747 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3749 (int)PERL_REVISION, (int)PERL_VERSION,
3750 (int)PERL_SUBVERSION, ARCHNAME);
3751 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3752 S_ISDIR(tmpstatbuf.st_mode))
3753 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3755 /* .../version if -d .../version */
3756 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3757 (int)PERL_REVISION, (int)PERL_VERSION,
3758 (int)PERL_SUBVERSION);
3759 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3760 S_ISDIR(tmpstatbuf.st_mode))
3761 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3763 /* .../archname if -d .../archname */
3764 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3765 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3766 S_ISDIR(tmpstatbuf.st_mode))
3767 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3770 #ifdef PERL_INC_VERSION_LIST
3772 for (incver = incverlist; *incver; incver++) {
3773 /* .../xxx if -d .../xxx */
3774 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3775 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3776 S_ISDIR(tmpstatbuf.st_mode))
3777 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3783 /* finally push this lib directory on the end of @INC */
3784 av_push(GvAVn(PL_incgv), libdir);
3789 STATIC struct perl_thread *
3790 S_init_main_thread(pTHX)
3792 #if !defined(PERL_IMPLICIT_CONTEXT)
3793 struct perl_thread *thr;
3797 Newz(53, thr, 1, struct perl_thread);
3798 PL_curcop = &PL_compiling;
3799 thr->interp = PERL_GET_INTERP;
3800 thr->cvcache = newHV();
3801 thr->threadsv = newAV();
3802 /* thr->threadsvp is set when find_threadsv is called */
3803 thr->specific = newAV();
3804 thr->flags = THRf_R_JOINABLE;
3805 MUTEX_INIT(&thr->mutex);
3806 /* Handcraft thrsv similarly to mess_sv */
3807 New(53, PL_thrsv, 1, SV);
3808 Newz(53, xpv, 1, XPV);
3809 SvFLAGS(PL_thrsv) = SVt_PV;
3810 SvANY(PL_thrsv) = (void*)xpv;
3811 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3812 SvPVX(PL_thrsv) = (char*)thr;
3813 SvCUR_set(PL_thrsv, sizeof(thr));
3814 SvLEN_set(PL_thrsv, sizeof(thr));
3815 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3816 thr->oursv = PL_thrsv;
3817 PL_chopset = " \n-";
3820 MUTEX_LOCK(&PL_threads_mutex);
3826 MUTEX_UNLOCK(&PL_threads_mutex);
3828 #ifdef HAVE_THREAD_INTERN
3829 Perl_init_thread_intern(thr);
3832 #ifdef SET_THREAD_SELF
3833 SET_THREAD_SELF(thr);
3835 thr->self = pthread_self();
3836 #endif /* SET_THREAD_SELF */
3840 * These must come after the thread self setting
3841 * because sv_setpvn does SvTAINT and the taint
3842 * fields thread selfness being set.
3844 PL_toptarget = NEWSV(0,0);
3845 sv_upgrade(PL_toptarget, SVt_PVFM);
3846 sv_setpvn(PL_toptarget, "", 0);
3847 PL_bodytarget = NEWSV(0,0);
3848 sv_upgrade(PL_bodytarget, SVt_PVFM);
3849 sv_setpvn(PL_bodytarget, "", 0);
3850 PL_formtarget = PL_bodytarget;
3851 thr->errsv = newSVpvn("", 0);
3852 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3855 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3856 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3857 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3858 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3859 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3860 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3862 PL_reginterp_cnt = 0;
3866 #endif /* USE_THREADS */
3869 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3872 line_t oldline = CopLINE(PL_curcop);
3878 while (AvFILL(paramList) >= 0) {
3879 cv = (CV*)av_shift(paramList);
3880 if (PL_savebegin && (paramList == PL_beginav)) {
3881 /* save PL_beginav for compiler */
3882 if (! PL_beginav_save)
3883 PL_beginav_save = newAV();
3884 av_push(PL_beginav_save, (SV*)cv);
3888 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3889 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3895 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3899 (void)SvPV(atsv, len);
3902 PL_curcop = &PL_compiling;
3903 CopLINE_set(PL_curcop, oldline);
3904 if (paramList == PL_beginav)
3905 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3907 Perl_sv_catpvf(aTHX_ atsv,
3908 "%s failed--call queue aborted",
3909 paramList == PL_checkav ? "CHECK"
3910 : paramList == PL_initav ? "INIT"
3912 while (PL_scopestack_ix > oldscope)
3915 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3922 /* my_exit() was called */
3923 while (PL_scopestack_ix > oldscope)
3926 PL_curstash = PL_defstash;
3927 PL_curcop = &PL_compiling;
3928 CopLINE_set(PL_curcop, oldline);
3930 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3931 if (paramList == PL_beginav)
3932 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3934 Perl_croak(aTHX_ "%s failed--call queue aborted",
3935 paramList == PL_checkav ? "CHECK"
3936 : paramList == PL_initav ? "INIT"
3943 PL_curcop = &PL_compiling;
3944 CopLINE_set(PL_curcop, oldline);
3947 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3955 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3957 S_vcall_list_body(pTHX_ va_list args)
3959 CV *cv = va_arg(args, CV*);
3960 return call_list_body(cv);
3965 S_call_list_body(pTHX_ CV *cv)
3967 PUSHMARK(PL_stack_sp);
3968 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3973 Perl_my_exit(pTHX_ U32 status)
3975 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3976 thr, (unsigned long) status));
3985 STATUS_NATIVE_SET(status);
3992 Perl_my_failure_exit(pTHX)
3995 if (vaxc$errno & 1) {
3996 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3997 STATUS_NATIVE_SET(44);
4000 if (!vaxc$errno && errno) /* unlikely */
4001 STATUS_NATIVE_SET(44);
4003 STATUS_NATIVE_SET(vaxc$errno);
4008 STATUS_POSIX_SET(errno);
4010 exitstatus = STATUS_POSIX >> 8;
4011 if (exitstatus & 255)
4012 STATUS_POSIX_SET(exitstatus);
4014 STATUS_POSIX_SET(255);
4021 S_my_exit_jump(pTHX)
4023 register PERL_CONTEXT *cx;
4028 SvREFCNT_dec(PL_e_script);
4029 PL_e_script = Nullsv;
4032 POPSTACK_TO(PL_mainstack);
4033 if (cxstack_ix >= 0) {
4036 POPBLOCK(cx,PL_curpm);
4048 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
4051 p = SvPVX(PL_e_script);
4052 nl = strchr(p, '\n');
4053 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4055 filter_del(read_e_script);
4058 sv_catpvn(buf_sv, p, nl-p);
4059 sv_chop(PL_e_script, nl);