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();
288 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
289 PL_regex_pad = AvARRAY(PL_regex_padav);
291 #ifdef USE_REENTRANT_API
292 New(31337, PL_reentrant_buffer,1, REBUF);
293 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
299 =for apidoc perl_destruct
301 Shuts down a Perl interpreter. See L<perlembed>.
309 int destruct_level; /* 0=none, 1=full, 2=full with checks */
314 #endif /* USE_THREADS */
316 /* wait for all pseudo-forked children to finish */
317 PERL_WAIT_FOR_CHILDREN;
321 /* Pass 1 on any remaining threads: detach joinables, join zombies */
323 MUTEX_LOCK(&PL_threads_mutex);
324 DEBUG_S(PerlIO_printf(Perl_debug_log,
325 "perl_destruct: waiting for %d threads...\n",
327 for (t = thr->next; t != thr; t = t->next) {
328 MUTEX_LOCK(&t->mutex);
329 switch (ThrSTATE(t)) {
332 DEBUG_S(PerlIO_printf(Perl_debug_log,
333 "perl_destruct: joining zombie %p\n", t));
334 ThrSETSTATE(t, THRf_DEAD);
335 MUTEX_UNLOCK(&t->mutex);
338 * The SvREFCNT_dec below may take a long time (e.g. av
339 * may contain an object scalar whose destructor gets
340 * called) so we have to unlock threads_mutex and start
343 MUTEX_UNLOCK(&PL_threads_mutex);
345 SvREFCNT_dec((SV*)av);
346 DEBUG_S(PerlIO_printf(Perl_debug_log,
347 "perl_destruct: joined zombie %p OK\n", t));
349 case THRf_R_JOINABLE:
350 DEBUG_S(PerlIO_printf(Perl_debug_log,
351 "perl_destruct: detaching thread %p\n", t));
352 ThrSETSTATE(t, THRf_R_DETACHED);
354 * We unlock threads_mutex and t->mutex in the opposite order
355 * from which we locked them just so that DETACH won't
356 * deadlock if it panics. It's only a breach of good style
357 * not a bug since they are unlocks not locks.
359 MUTEX_UNLOCK(&PL_threads_mutex);
361 MUTEX_UNLOCK(&t->mutex);
364 DEBUG_S(PerlIO_printf(Perl_debug_log,
365 "perl_destruct: ignoring %p (state %u)\n",
367 MUTEX_UNLOCK(&t->mutex);
368 /* fall through and out */
371 /* We leave the above "Pass 1" loop with threads_mutex still locked */
373 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
374 while (PL_nthreads > 1)
376 DEBUG_S(PerlIO_printf(Perl_debug_log,
377 "perl_destruct: final wait for %d threads\n",
379 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
381 /* At this point, we're the last thread */
382 MUTEX_UNLOCK(&PL_threads_mutex);
383 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
384 MUTEX_DESTROY(&PL_threads_mutex);
385 COND_DESTROY(&PL_nthreads_cond);
387 #endif /* !defined(FAKE_THREADS) */
388 #endif /* USE_THREADS */
390 destruct_level = PL_perl_destruct_level;
394 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
396 if (destruct_level < i)
403 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
408 if (PL_endav && !PL_minus_c)
409 call_list(PL_scopestack_ix, PL_endav);
415 /* We must account for everything. */
417 /* Destroy the main CV and syntax tree */
419 PL_curpad = AvARRAY(PL_comppad);
420 op_free(PL_main_root);
421 PL_main_root = Nullop;
423 PL_curcop = &PL_compiling;
424 PL_main_start = Nullop;
425 SvREFCNT_dec(PL_main_cv);
429 /* Tell PerlIO we are about to tear things apart in case
430 we have layers which are using resources that should
434 PerlIO_destruct(aTHX);
436 if (PL_sv_objcount) {
438 * Try to destruct global references. We do this first so that the
439 * destructors and destructees still exist. Some sv's might remain.
440 * Non-referenced objects are on their own.
445 /* unhook hooks which will soon be, or use, destroyed data */
446 SvREFCNT_dec(PL_warnhook);
447 PL_warnhook = Nullsv;
448 SvREFCNT_dec(PL_diehook);
451 /* call exit list functions */
452 while (PL_exitlistlen-- > 0)
453 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
455 Safefree(PL_exitlist);
457 if (destruct_level == 0){
459 DEBUG_P(debprofdump());
461 /* The exit() function will do everything that needs doing. */
462 return STATUS_NATIVE_EXPORT;;
465 /* jettison our possibly duplicated environment */
467 #ifdef USE_ENVIRON_ARRAY
468 if (environ != PL_origenviron) {
471 for (i = 0; environ[i]; i++)
472 safesysfree(environ[i]);
473 /* Must use safesysfree() when working with environ. */
474 safesysfree(environ);
476 environ = PL_origenviron;
481 /* the syntax tree is shared between clones
482 * so op_free(PL_main_root) only ReREFCNT_dec's
483 * REGEXPs in the parent interpreter
484 * we need to manually ReREFCNT_dec for the clones
487 I32 i = AvFILLp(PL_regex_padav) + 1;
488 SV **ary = AvARRAY(PL_regex_padav);
492 REGEXP *re = (REGEXP *)SvIVX(resv);
494 if (SvFLAGS(resv) & SVf_BREAK) {
495 /* this is PL_reg_curpm, already freed
496 * flag is set in regexec.c:S_regtry
498 SvFLAGS(resv) &= ~SVf_BREAK;
505 SvREFCNT_dec(PL_regex_padav);
506 PL_regex_padav = Nullav;
510 /* loosen bonds of global variables */
513 (void)PerlIO_close(PL_rsfp);
517 /* Filters for program text */
518 SvREFCNT_dec(PL_rsfp_filters);
519 PL_rsfp_filters = Nullav;
522 PL_preprocess = FALSE;
528 PL_doswitches = FALSE;
529 PL_dowarn = G_WARN_OFF;
530 PL_doextract = FALSE;
531 PL_sawampersand = FALSE; /* must save all match strings */
534 Safefree(PL_inplace);
536 SvREFCNT_dec(PL_patchlevel);
539 SvREFCNT_dec(PL_e_script);
540 PL_e_script = Nullsv;
543 while (--PL_origargc >= 0) {
544 Safefree(PL_origargv[PL_origargc]);
546 Safefree(PL_origargv);
548 /* magical thingies */
550 SvREFCNT_dec(PL_ofs_sv); /* $, */
553 SvREFCNT_dec(PL_ors_sv); /* $\ */
556 SvREFCNT_dec(PL_rs); /* $/ */
559 SvREFCNT_dec(PL_nrs); /* $/ helper */
562 PL_multiline = 0; /* $* */
563 Safefree(PL_osname); /* $^O */
566 SvREFCNT_dec(PL_statname);
567 PL_statname = Nullsv;
570 /* defgv, aka *_ should be taken care of elsewhere */
572 /* clean up after study() */
573 SvREFCNT_dec(PL_lastscream);
574 PL_lastscream = Nullsv;
575 Safefree(PL_screamfirst);
577 Safefree(PL_screamnext);
581 Safefree(PL_efloatbuf);
582 PL_efloatbuf = Nullch;
585 /* startup and shutdown function lists */
586 SvREFCNT_dec(PL_beginav);
587 SvREFCNT_dec(PL_endav);
588 SvREFCNT_dec(PL_checkav);
589 SvREFCNT_dec(PL_initav);
595 /* shortcuts just get cleared */
601 PL_argvoutgv = Nullgv;
603 PL_stderrgv = Nullgv;
604 PL_last_in_gv = Nullgv;
606 PL_debstash = Nullhv;
608 /* reset so print() ends up where we expect */
611 SvREFCNT_dec(PL_argvout_stack);
612 PL_argvout_stack = Nullav;
614 SvREFCNT_dec(PL_modglobal);
615 PL_modglobal = Nullhv;
616 SvREFCNT_dec(PL_preambleav);
617 PL_preambleav = Nullav;
618 SvREFCNT_dec(PL_subname);
620 SvREFCNT_dec(PL_linestr);
622 SvREFCNT_dec(PL_pidstatus);
623 PL_pidstatus = Nullhv;
624 SvREFCNT_dec(PL_toptarget);
625 PL_toptarget = Nullsv;
626 SvREFCNT_dec(PL_bodytarget);
627 PL_bodytarget = Nullsv;
628 PL_formtarget = Nullsv;
630 /* free locale stuff */
631 #ifdef USE_LOCALE_COLLATE
632 Safefree(PL_collation_name);
633 PL_collation_name = Nullch;
636 #ifdef USE_LOCALE_NUMERIC
637 Safefree(PL_numeric_name);
638 PL_numeric_name = Nullch;
639 SvREFCNT_dec(PL_numeric_radix_sv);
642 /* clear utf8 character classes */
643 SvREFCNT_dec(PL_utf8_alnum);
644 SvREFCNT_dec(PL_utf8_alnumc);
645 SvREFCNT_dec(PL_utf8_ascii);
646 SvREFCNT_dec(PL_utf8_alpha);
647 SvREFCNT_dec(PL_utf8_space);
648 SvREFCNT_dec(PL_utf8_cntrl);
649 SvREFCNT_dec(PL_utf8_graph);
650 SvREFCNT_dec(PL_utf8_digit);
651 SvREFCNT_dec(PL_utf8_upper);
652 SvREFCNT_dec(PL_utf8_lower);
653 SvREFCNT_dec(PL_utf8_print);
654 SvREFCNT_dec(PL_utf8_punct);
655 SvREFCNT_dec(PL_utf8_xdigit);
656 SvREFCNT_dec(PL_utf8_mark);
657 SvREFCNT_dec(PL_utf8_toupper);
658 SvREFCNT_dec(PL_utf8_tolower);
659 PL_utf8_alnum = Nullsv;
660 PL_utf8_alnumc = Nullsv;
661 PL_utf8_ascii = Nullsv;
662 PL_utf8_alpha = Nullsv;
663 PL_utf8_space = Nullsv;
664 PL_utf8_cntrl = Nullsv;
665 PL_utf8_graph = Nullsv;
666 PL_utf8_digit = Nullsv;
667 PL_utf8_upper = Nullsv;
668 PL_utf8_lower = Nullsv;
669 PL_utf8_print = Nullsv;
670 PL_utf8_punct = Nullsv;
671 PL_utf8_xdigit = Nullsv;
672 PL_utf8_mark = Nullsv;
673 PL_utf8_toupper = Nullsv;
674 PL_utf8_totitle = Nullsv;
675 PL_utf8_tolower = Nullsv;
677 if (!specialWARN(PL_compiling.cop_warnings))
678 SvREFCNT_dec(PL_compiling.cop_warnings);
679 PL_compiling.cop_warnings = Nullsv;
680 if (!specialCopIO(PL_compiling.cop_io))
681 SvREFCNT_dec(PL_compiling.cop_io);
682 PL_compiling.cop_io = Nullsv;
684 Safefree(CopFILE(&PL_compiling));
685 CopFILE(&PL_compiling) = Nullch;
686 Safefree(CopSTASHPV(&PL_compiling));
688 SvREFCNT_dec(CopFILEGV(&PL_compiling));
689 CopFILEGV(&PL_compiling) = Nullgv;
690 /* cop_stash is not refcounted */
693 /* Prepare to destruct main symbol table. */
698 SvREFCNT_dec(PL_curstname);
699 PL_curstname = Nullsv;
701 /* clear queued errors */
702 SvREFCNT_dec(PL_errors);
706 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
707 if (PL_scopestack_ix != 0)
708 Perl_warner(aTHX_ WARN_INTERNAL,
709 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
710 (long)PL_scopestack_ix);
711 if (PL_savestack_ix != 0)
712 Perl_warner(aTHX_ WARN_INTERNAL,
713 "Unbalanced saves: %ld more saves than restores\n",
714 (long)PL_savestack_ix);
715 if (PL_tmps_floor != -1)
716 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
717 (long)PL_tmps_floor + 1);
718 if (cxstack_ix != -1)
719 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
720 (long)cxstack_ix + 1);
723 /* Now absolutely destruct everything, somehow or other, loops or no. */
724 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
725 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
727 /* the 2 is for PL_fdpid and PL_strtab */
728 while (PL_sv_count > 2 && sv_clean_all())
731 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
732 SvFLAGS(PL_fdpid) |= SVt_PVAV;
733 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
734 SvFLAGS(PL_strtab) |= SVt_PVHV;
736 AvREAL_off(PL_fdpid); /* no surviving entries */
737 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
740 #ifdef HAVE_INTERP_INTERN
744 /* Destruct the global string table. */
746 /* Yell and reset the HeVAL() slots that are still holding refcounts,
747 * so that sv_free() won't fail on them.
755 max = HvMAX(PL_strtab);
756 array = HvARRAY(PL_strtab);
759 if (hent && ckWARN_d(WARN_INTERNAL)) {
760 Perl_warner(aTHX_ WARN_INTERNAL,
761 "Unbalanced string table refcount: (%d) for \"%s\"",
762 HeVAL(hent) - Nullsv, HeKEY(hent));
763 HeVAL(hent) = Nullsv;
773 SvREFCNT_dec(PL_strtab);
776 /* free the pointer table used for cloning */
777 ptr_table_free(PL_ptr_table);
780 /* free special SVs */
782 SvREFCNT(&PL_sv_yes) = 0;
783 sv_clear(&PL_sv_yes);
784 SvANY(&PL_sv_yes) = NULL;
785 SvFLAGS(&PL_sv_yes) = 0;
787 SvREFCNT(&PL_sv_no) = 0;
789 SvANY(&PL_sv_no) = NULL;
790 SvFLAGS(&PL_sv_no) = 0;
792 SvREFCNT(&PL_sv_undef) = 0;
793 SvREADONLY_off(&PL_sv_undef);
795 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
796 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
798 Safefree(PL_origfilename);
799 Safefree(PL_reg_start_tmp);
801 Safefree(PL_reg_curpm);
802 Safefree(PL_reg_poscache);
803 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
804 Safefree(PL_op_mask);
805 Safefree(PL_psig_ptr);
806 Safefree(PL_psig_name);
807 Safefree(PL_bitcount);
808 Safefree(PL_psig_pend);
810 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
812 DEBUG_P(debprofdump());
814 MUTEX_DESTROY(&PL_strtab_mutex);
815 MUTEX_DESTROY(&PL_sv_mutex);
816 MUTEX_DESTROY(&PL_eval_mutex);
817 MUTEX_DESTROY(&PL_cred_mutex);
818 MUTEX_DESTROY(&PL_fdpid_mutex);
819 COND_DESTROY(&PL_eval_cond);
820 #ifdef EMULATE_ATOMIC_REFCOUNTS
821 MUTEX_DESTROY(&PL_svref_mutex);
822 #endif /* EMULATE_ATOMIC_REFCOUNTS */
824 /* As the penultimate thing, free the non-arena SV for thrsv */
825 Safefree(SvPVX(PL_thrsv));
826 Safefree(SvANY(PL_thrsv));
829 #endif /* USE_THREADS */
831 #ifdef USE_REENTRANT_API
832 Safefree(PL_reentrant_buffer->tmbuff);
833 Safefree(PL_reentrant_buffer);
838 /* As the absolutely last thing, free the non-arena SV for mess() */
841 /* it could have accumulated taint magic */
842 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
845 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
846 moremagic = mg->mg_moremagic;
847 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
849 Safefree(mg->mg_ptr);
853 /* we know that type >= SVt_PV */
854 (void)SvOOK_off(PL_mess_sv);
855 Safefree(SvPVX(PL_mess_sv));
856 Safefree(SvANY(PL_mess_sv));
857 Safefree(PL_mess_sv);
860 return STATUS_NATIVE_EXPORT;
864 =for apidoc perl_free
866 Releases a Perl interpreter. See L<perlembed>.
874 #if defined(PERL_OBJECT)
877 # if defined(WIN32) || defined(NETWARE)
878 # if defined(PERL_IMPLICIT_SYS)
880 void *host = nw_internal_host;
882 void *host = w32_internal_host;
885 if (PerlProc_lasthost()) {
891 nw5_delete_internal_host(host);
893 win32_delete_internal_host(host);
906 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
908 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
909 PL_exitlist[PL_exitlistlen].fn = fn;
910 PL_exitlist[PL_exitlistlen].ptr = ptr;
915 =for apidoc perl_parse
917 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
923 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
932 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
935 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
936 setuid perl scripts securely.\n");
940 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
941 _dyld_lookup_and_bind
942 ("__environ", (unsigned long *) &environ_pointer, NULL);
947 /* we copy rather than point to argv
948 * since perl_clone will copy and perl_destruct
949 * has no way of knowing if we've made a copy or
953 New(0, PL_origargv, i+1, char*);
954 PL_origargv[i] = '\0';
956 PL_origargv[i] = savepv(argv[i]);
960 #ifdef USE_ENVIRON_ARRAY
961 PL_origenviron = environ;
966 /* Come here if running an undumped a.out. */
968 PL_origfilename = savepv(argv[0]);
969 PL_do_undump = FALSE;
970 cxstack_ix = -1; /* start label stack again */
972 init_postdump_symbols(argc,argv,env);
977 PL_curpad = AvARRAY(PL_comppad);
978 op_free(PL_main_root);
979 PL_main_root = Nullop;
981 PL_main_start = Nullop;
982 SvREFCNT_dec(PL_main_cv);
986 oldscope = PL_scopestack_ix;
987 PL_dowarn = G_WARN_OFF;
989 #ifdef PERL_FLEXIBLE_EXCEPTIONS
990 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
996 #ifndef PERL_FLEXIBLE_EXCEPTIONS
997 parse_body(env,xsinit);
1000 call_list(oldscope, PL_checkav);
1007 /* my_exit() was called */
1008 while (PL_scopestack_ix > oldscope)
1011 PL_curstash = PL_defstash;
1013 call_list(oldscope, PL_checkav);
1014 ret = STATUS_NATIVE_EXPORT;
1017 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1025 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1027 S_vparse_body(pTHX_ va_list args)
1029 char **env = va_arg(args, char**);
1030 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1032 return parse_body(env, xsinit);
1037 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1039 int argc = PL_origargc;
1040 char **argv = PL_origargv;
1041 char *scriptname = NULL;
1043 VOL bool dosearch = FALSE;
1044 char *validarg = "";
1048 char *cddir = Nullch;
1050 sv_setpvn(PL_linestr,"",0);
1051 sv = newSVpvn("",0); /* first used for -I flags */
1055 for (argc--,argv++; argc > 0; argc--,argv++) {
1056 if (argv[0][0] != '-' || !argv[0][1])
1060 validarg = " PHOOEY ";
1069 win32_argv2utf8(argc-1, argv+1);
1072 #ifndef PERL_STRICT_CR
1096 if ((s = moreswitches(s)))
1106 #ifdef MACOS_TRADITIONAL
1107 /* ignore -e for Dev:Pseudo argument */
1108 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1111 if (PL_euid != PL_uid || PL_egid != PL_gid)
1112 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1114 PL_e_script = newSVpvn("",0);
1115 filter_add(read_e_script, NULL);
1118 sv_catpv(PL_e_script, s);
1120 sv_catpv(PL_e_script, argv[1]);
1124 Perl_croak(aTHX_ "No code specified for -e");
1125 sv_catpv(PL_e_script, "\n");
1128 case 'I': /* -I handled both here and in moreswitches() */
1130 if (!*++s && (s=argv[1]) != Nullch) {
1135 STRLEN len = strlen(s);
1136 p = savepvn(s, len);
1137 incpush(p, TRUE, TRUE);
1138 sv_catpvn(sv, "-I", 2);
1139 sv_catpvn(sv, p, len);
1140 sv_catpvn(sv, " ", 1);
1144 Perl_croak(aTHX_ "No directory specified for -I");
1148 PL_preprocess = TRUE;
1158 PL_preambleav = newAV();
1159 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1161 PL_Sv = newSVpv("print myconfig();",0);
1163 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1165 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1167 sv_catpv(PL_Sv,"\" Compile-time options:");
1169 sv_catpv(PL_Sv," DEBUGGING");
1171 # ifdef MULTIPLICITY
1172 sv_catpv(PL_Sv," MULTIPLICITY");
1175 sv_catpv(PL_Sv," USE_THREADS");
1177 # ifdef USE_ITHREADS
1178 sv_catpv(PL_Sv," USE_ITHREADS");
1180 # ifdef USE_64_BIT_INT
1181 sv_catpv(PL_Sv," USE_64_BIT_INT");
1183 # ifdef USE_64_BIT_ALL
1184 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1186 # ifdef USE_LONG_DOUBLE
1187 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1189 # ifdef USE_LARGE_FILES
1190 sv_catpv(PL_Sv," USE_LARGE_FILES");
1193 sv_catpv(PL_Sv," USE_SOCKS");
1196 sv_catpv(PL_Sv," PERL_OBJECT");
1198 # ifdef PERL_IMPLICIT_CONTEXT
1199 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1201 # ifdef PERL_IMPLICIT_SYS
1202 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1204 sv_catpv(PL_Sv,"\\n\",");
1206 #if defined(LOCAL_PATCH_COUNT)
1207 if (LOCAL_PATCH_COUNT > 0) {
1209 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1210 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1211 if (PL_localpatches[i])
1212 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1216 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1219 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1221 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1224 sv_catpv(PL_Sv, "; \
1226 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1229 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1232 print \" \\%ENV:\\n @env\\n\" if @env; \
1233 print \" \\@INC:\\n @INC\\n\";");
1236 PL_Sv = newSVpv("config_vars(qw(",0);
1237 sv_catpv(PL_Sv, ++s);
1238 sv_catpv(PL_Sv, "))");
1241 av_push(PL_preambleav, PL_Sv);
1242 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1245 PL_doextract = TRUE;
1253 if (!*++s || isSPACE(*s)) {
1257 /* catch use of gnu style long options */
1258 if (strEQ(s, "version")) {
1262 if (strEQ(s, "help")) {
1269 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1275 #ifndef SECURE_INTERNAL_GETENV
1278 (s = PerlEnv_getenv("PERL5OPT")))
1283 if (*s == '-' && *(s+1) == 'T')
1286 char *popt_copy = Nullch;
1299 if (!strchr("DIMUdmw", *s))
1300 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1304 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1305 s = popt_copy + (s - popt);
1306 d = popt_copy + (d - popt);
1318 scriptname = argv[0];
1321 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1323 else if (scriptname == Nullch) {
1325 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1333 open_script(scriptname,dosearch,sv,&fdscript);
1335 validate_suid(validarg, scriptname,fdscript);
1338 #if defined(SIGCHLD) || defined(SIGCLD)
1341 # define SIGCHLD SIGCLD
1343 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1344 if (sigstate == SIG_IGN) {
1345 if (ckWARN(WARN_SIGNAL))
1346 Perl_warner(aTHX_ WARN_SIGNAL,
1347 "Can't ignore signal CHLD, forcing to default");
1348 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1354 #ifdef MACOS_TRADITIONAL
1355 if (PL_doextract || gMacPerl_AlwaysExtract) {
1360 if (cddir && PerlDir_chdir(cddir) < 0)
1361 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1365 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1366 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1367 CvUNIQUE_on(PL_compcv);
1369 PL_comppad = newAV();
1370 av_push(PL_comppad, Nullsv);
1371 PL_curpad = AvARRAY(PL_comppad);
1372 PL_comppad_name = newAV();
1373 PL_comppad_name_fill = 0;
1374 PL_min_intro_pending = 0;
1377 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1378 PL_curpad[0] = (SV*)newAV();
1379 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1380 CvOWNER(PL_compcv) = 0;
1381 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1382 MUTEX_INIT(CvMUTEXP(PL_compcv));
1383 #endif /* USE_THREADS */
1385 comppadlist = newAV();
1386 AvREAL_off(comppadlist);
1387 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1388 av_store(comppadlist, 1, (SV*)PL_comppad);
1389 CvPADLIST(PL_compcv) = comppadlist;
1392 boot_core_UNIVERSAL();
1394 boot_core_xsutils();
1398 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1400 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1406 # ifdef HAS_SOCKS5_INIT
1407 socks5_init(argv[0]);
1413 init_predump_symbols();
1414 /* init_postdump_symbols not currently designed to be called */
1415 /* more than once (ENV isn't cleared first, for example) */
1416 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1418 init_postdump_symbols(argc,argv,env);
1422 /* now parse the script */
1424 SETERRNO(0,SS$_NORMAL);
1426 #ifdef MACOS_TRADITIONAL
1427 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1429 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1431 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1432 MacPerl_MPWFileName(PL_origfilename));
1436 if (yyparse() || PL_error_count) {
1438 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1440 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1445 CopLINE_set(PL_curcop, 0);
1446 PL_curstash = PL_defstash;
1447 PL_preprocess = FALSE;
1449 SvREFCNT_dec(PL_e_script);
1450 PL_e_script = Nullsv;
1453 /* now that script is parsed, we can modify record separator */
1454 SvREFCNT_dec(PL_rs);
1455 PL_rs = SvREFCNT_inc(PL_nrs);
1456 sv_setsv(get_sv("/", TRUE), PL_rs);
1461 SAVECOPFILE(PL_curcop);
1462 SAVECOPLINE(PL_curcop);
1463 gv_check(PL_defstash);
1470 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1471 dump_mstats("after compilation:");
1480 =for apidoc perl_run
1482 Tells a Perl interpreter to run. See L<perlembed>.
1497 oldscope = PL_scopestack_ix;
1499 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1501 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1507 cxstack_ix = -1; /* start context stack again */
1509 case 0: /* normal completion */
1510 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1515 case 2: /* my_exit() */
1516 while (PL_scopestack_ix > oldscope)
1519 PL_curstash = PL_defstash;
1520 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1521 PL_endav && !PL_minus_c)
1522 call_list(oldscope, PL_endav);
1524 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1525 dump_mstats("after execution: ");
1527 ret = STATUS_NATIVE_EXPORT;
1531 POPSTACK_TO(PL_mainstack);
1534 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1544 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1546 S_vrun_body(pTHX_ va_list args)
1548 I32 oldscope = va_arg(args, I32);
1550 return run_body(oldscope);
1556 S_run_body(pTHX_ I32 oldscope)
1558 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1559 PL_sawampersand ? "Enabling" : "Omitting"));
1561 if (!PL_restartop) {
1562 DEBUG_x(dump_all());
1563 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1564 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1568 #ifdef MACOS_TRADITIONAL
1569 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1571 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1575 if (PERLDB_SINGLE && PL_DBsingle)
1576 sv_setiv(PL_DBsingle, 1);
1578 call_list(oldscope, PL_initav);
1584 PL_op = PL_restartop;
1588 else if (PL_main_start) {
1589 CvDEPTH(PL_main_cv) = 1;
1590 PL_op = PL_main_start;
1600 =for apidoc p||get_sv
1602 Returns the SV of the specified Perl scalar. If C<create> is set and the
1603 Perl variable does not exist then it will be created. If C<create> is not
1604 set and the variable does not exist then NULL is returned.
1610 Perl_get_sv(pTHX_ const char *name, I32 create)
1614 if (name[1] == '\0' && !isALPHA(name[0])) {
1615 PADOFFSET tmp = find_threadsv(name);
1616 if (tmp != NOT_IN_PAD)
1617 return THREADSV(tmp);
1619 #endif /* USE_THREADS */
1620 gv = gv_fetchpv(name, create, SVt_PV);
1627 =for apidoc p||get_av
1629 Returns the AV of the specified Perl array. If C<create> is set and the
1630 Perl variable does not exist then it will be created. If C<create> is not
1631 set and the variable does not exist then NULL is returned.
1637 Perl_get_av(pTHX_ const char *name, I32 create)
1639 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1648 =for apidoc p||get_hv
1650 Returns the HV of the specified Perl hash. If C<create> is set and the
1651 Perl variable does not exist then it will be created. If C<create> is not
1652 set and the variable does not exist then NULL is returned.
1658 Perl_get_hv(pTHX_ const char *name, I32 create)
1660 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1669 =for apidoc p||get_cv
1671 Returns the CV of the specified Perl subroutine. If C<create> is set and
1672 the Perl subroutine does not exist then it will be declared (which has the
1673 same effect as saying C<sub name;>). If C<create> is not set and the
1674 subroutine does not exist then NULL is returned.
1680 Perl_get_cv(pTHX_ const char *name, I32 create)
1682 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1683 /* XXX unsafe for threads if eval_owner isn't held */
1684 /* XXX this is probably not what they think they're getting.
1685 * It has the same effect as "sub name;", i.e. just a forward
1687 if (create && !GvCVu(gv))
1688 return newSUB(start_subparse(FALSE, 0),
1689 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1697 /* Be sure to refetch the stack pointer after calling these routines. */
1700 =for apidoc p||call_argv
1702 Performs a callback to the specified Perl sub. See L<perlcall>.
1708 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1710 /* See G_* flags in cop.h */
1711 /* null terminated arg list */
1718 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1723 return call_pv(sub_name, flags);
1727 =for apidoc p||call_pv
1729 Performs a callback to the specified Perl sub. See L<perlcall>.
1735 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1736 /* name of the subroutine */
1737 /* See G_* flags in cop.h */
1739 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1743 =for apidoc p||call_method
1745 Performs a callback to the specified Perl method. The blessed object must
1746 be on the stack. See L<perlcall>.
1752 Perl_call_method(pTHX_ const char *methname, I32 flags)
1753 /* name of the subroutine */
1754 /* See G_* flags in cop.h */
1756 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1759 /* May be called with any of a CV, a GV, or an SV containing the name. */
1761 =for apidoc p||call_sv
1763 Performs a callback to the Perl sub whose name is in the SV. See
1770 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1771 /* See G_* flags in cop.h */
1774 LOGOP myop; /* fake syntax tree node */
1777 volatile I32 retval = 0;
1779 bool oldcatch = CATCH_GET;
1784 if (flags & G_DISCARD) {
1789 Zero(&myop, 1, LOGOP);
1790 myop.op_next = Nullop;
1791 if (!(flags & G_NOARGS))
1792 myop.op_flags |= OPf_STACKED;
1793 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1794 (flags & G_ARRAY) ? OPf_WANT_LIST :
1799 EXTEND(PL_stack_sp, 1);
1800 *++PL_stack_sp = sv;
1802 oldscope = PL_scopestack_ix;
1804 if (PERLDB_SUB && PL_curstash != PL_debstash
1805 /* Handle first BEGIN of -d. */
1806 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1807 /* Try harder, since this may have been a sighandler, thus
1808 * curstash may be meaningless. */
1809 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1810 && !(flags & G_NODEBUG))
1811 PL_op->op_private |= OPpENTERSUB_DB;
1813 if (flags & G_METHOD) {
1814 Zero(&method_op, 1, UNOP);
1815 method_op.op_next = PL_op;
1816 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1817 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1818 PL_op = (OP*)&method_op;
1821 if (!(flags & G_EVAL)) {
1823 call_body((OP*)&myop, FALSE);
1824 retval = PL_stack_sp - (PL_stack_base + oldmark);
1825 CATCH_SET(oldcatch);
1828 myop.op_other = (OP*)&myop;
1830 /* we're trying to emulate pp_entertry() here */
1832 register PERL_CONTEXT *cx;
1833 I32 gimme = GIMME_V;
1838 push_return(Nullop);
1839 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1841 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1843 PL_in_eval = EVAL_INEVAL;
1844 if (flags & G_KEEPERR)
1845 PL_in_eval |= EVAL_KEEPERR;
1851 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1853 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1860 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1862 call_body((OP*)&myop, FALSE);
1864 retval = PL_stack_sp - (PL_stack_base + oldmark);
1865 if (!(flags & G_KEEPERR))
1872 /* my_exit() was called */
1873 PL_curstash = PL_defstash;
1876 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1877 Perl_croak(aTHX_ "Callback called exit");
1882 PL_op = PL_restartop;
1886 PL_stack_sp = PL_stack_base + oldmark;
1887 if (flags & G_ARRAY)
1891 *++PL_stack_sp = &PL_sv_undef;
1896 if (PL_scopestack_ix > oldscope) {
1900 register PERL_CONTEXT *cx;
1912 if (flags & G_DISCARD) {
1913 PL_stack_sp = PL_stack_base + oldmark;
1922 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1924 S_vcall_body(pTHX_ va_list args)
1926 OP *myop = va_arg(args, OP*);
1927 int is_eval = va_arg(args, int);
1929 call_body(myop, is_eval);
1935 S_call_body(pTHX_ OP *myop, int is_eval)
1937 if (PL_op == myop) {
1939 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1941 PL_op = Perl_pp_entersub(aTHX); /* this does */
1947 /* Eval a string. The G_EVAL flag is always assumed. */
1950 =for apidoc p||eval_sv
1952 Tells Perl to C<eval> the string in the SV.
1958 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1960 /* See G_* flags in cop.h */
1963 UNOP myop; /* fake syntax tree node */
1964 volatile I32 oldmark = SP - PL_stack_base;
1965 volatile I32 retval = 0;
1971 if (flags & G_DISCARD) {
1978 Zero(PL_op, 1, UNOP);
1979 EXTEND(PL_stack_sp, 1);
1980 *++PL_stack_sp = sv;
1981 oldscope = PL_scopestack_ix;
1983 if (!(flags & G_NOARGS))
1984 myop.op_flags = OPf_STACKED;
1985 myop.op_next = Nullop;
1986 myop.op_type = OP_ENTEREVAL;
1987 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1988 (flags & G_ARRAY) ? OPf_WANT_LIST :
1990 if (flags & G_KEEPERR)
1991 myop.op_flags |= OPf_SPECIAL;
1993 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1995 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2002 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2004 call_body((OP*)&myop,TRUE);
2006 retval = PL_stack_sp - (PL_stack_base + oldmark);
2007 if (!(flags & G_KEEPERR))
2014 /* my_exit() was called */
2015 PL_curstash = PL_defstash;
2018 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2019 Perl_croak(aTHX_ "Callback called exit");
2024 PL_op = PL_restartop;
2028 PL_stack_sp = PL_stack_base + oldmark;
2029 if (flags & G_ARRAY)
2033 *++PL_stack_sp = &PL_sv_undef;
2039 if (flags & G_DISCARD) {
2040 PL_stack_sp = PL_stack_base + oldmark;
2050 =for apidoc p||eval_pv
2052 Tells Perl to C<eval> the given string and return an SV* result.
2058 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2061 SV* sv = newSVpv(p, 0);
2063 eval_sv(sv, G_SCALAR);
2070 if (croak_on_error && SvTRUE(ERRSV)) {
2072 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2078 /* Require a module. */
2081 =for apidoc p||require_pv
2083 Tells Perl to C<require> the file named by the string argument. It is
2084 analogous to the Perl code C<eval "require '$file'">. It's even
2085 implemented that way; consider using Perl_load_module instead.
2090 Perl_require_pv(pTHX_ const char *pv)
2094 PUSHSTACKi(PERLSI_REQUIRE);
2096 sv = sv_newmortal();
2097 sv_setpv(sv, "require '");
2100 eval_sv(sv, G_DISCARD);
2106 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2110 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2111 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2115 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2117 /* This message really ought to be max 23 lines.
2118 * Removed -h because the user already knows that option. Others? */
2120 static char *usage_msg[] = {
2121 "-0[octal] specify record separator (\\0, if no argument)",
2122 "-a autosplit mode with -n or -p (splits $_ into @F)",
2123 "-C enable native wide character system interfaces",
2124 "-c check syntax only (runs BEGIN and CHECK blocks)",
2125 "-d[:debugger] run program under debugger",
2126 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2127 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2128 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2129 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2130 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2131 "-l[octal] enable line ending processing, specifies line terminator",
2132 "-[mM][-]module execute `use/no module...' before executing program",
2133 "-n assume 'while (<>) { ... }' loop around program",
2134 "-p assume loop like -n but print line also, like sed",
2135 "-P run program through C preprocessor before compilation",
2136 "-s enable rudimentary parsing for switches after programfile",
2137 "-S look for programfile using PATH environment variable",
2138 "-T enable tainting checks",
2139 "-u dump core after parsing program",
2140 "-U allow unsafe operations",
2141 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2142 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2143 "-w enable many useful warnings (RECOMMENDED)",
2144 "-W enable all warnings",
2145 "-X disable all warnings",
2146 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2150 char **p = usage_msg;
2152 PerlIO_printf(PerlIO_stdout(),
2153 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2156 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2159 /* This routine handles any switches that can be given during run */
2162 Perl_moreswitches(pTHX_ char *s)
2170 numlen = 0; /* disallow underscores */
2171 rschar = (U32)scan_oct(s, 4, &numlen);
2172 SvREFCNT_dec(PL_nrs);
2173 if (rschar & ~((U8)~0))
2174 PL_nrs = &PL_sv_undef;
2175 else if (!rschar && numlen >= 2)
2176 PL_nrs = newSVpvn("", 0);
2179 PL_nrs = newSVpvn(&ch, 1);
2184 PL_widesyscalls = TRUE;
2189 PL_splitstr = savepv(s + 1);
2203 /* The following permits -d:Mod to accepts arguments following an =
2204 in the fashion that -MSome::Mod does. */
2205 if (*s == ':' || *s == '=') {
2208 sv = newSVpv("use Devel::", 0);
2210 /* We now allow -d:Module=Foo,Bar */
2211 while(isALNUM(*s) || *s==':') ++s;
2213 sv_catpv(sv, start);
2215 sv_catpvn(sv, start, s-start);
2216 sv_catpv(sv, " split(/,/,q{");
2221 my_setenv("PERL5DB", SvPV(sv, PL_na));
2224 PL_perldb = PERLDB_ALL;
2232 if (isALPHA(s[1])) {
2233 /* if adding extra options, remember to update DEBUG_MASK */
2234 static char debopts[] = "psltocPmfrxuLHXDSTR";
2237 for (s++; *s && (d = strchr(debopts,*s)); s++)
2238 PL_debug |= 1 << (d - debopts);
2241 PL_debug = atoi(s+1);
2242 for (s++; isDIGIT(*s); s++) ;
2244 PL_debug |= DEBUG_TOP_FLAG;
2246 if (ckWARN_d(WARN_DEBUGGING))
2247 Perl_warner(aTHX_ WARN_DEBUGGING,
2248 "Recompile perl with -DDEBUGGING to use -D switch\n");
2249 for (s++; isALNUM(*s); s++) ;
2255 usage(PL_origargv[0]);
2259 Safefree(PL_inplace);
2260 PL_inplace = savepv(s+1);
2262 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2265 if (*s == '-') /* Additional switches on #! line. */
2269 case 'I': /* -I handled both here and in parse_perl() */
2272 while (*s && isSPACE(*s))
2277 /* ignore trailing spaces (possibly followed by other switches) */
2279 for (e = p; *e && !isSPACE(*e); e++) ;
2283 } while (*p && *p != '-');
2284 e = savepvn(s, e-s);
2285 incpush(e, TRUE, TRUE);
2292 Perl_croak(aTHX_ "No directory specified for -I");
2298 SvREFCNT_dec(PL_ors_sv);
2302 PL_ors_sv = newSVpvn("\n",1);
2303 numlen = 0; /* disallow underscores */
2304 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2308 if (RsPARA(PL_nrs)) {
2309 PL_ors_sv = newSVpvn("\n\n",2);
2312 PL_ors_sv = newSVsv(PL_nrs);
2317 forbid_setid("-M"); /* XXX ? */
2320 forbid_setid("-m"); /* XXX ? */
2325 /* -M-foo == 'no foo' */
2326 if (*s == '-') { use = "no "; ++s; }
2327 sv = newSVpv(use,0);
2329 /* We allow -M'Module qw(Foo Bar)' */
2330 while(isALNUM(*s) || *s==':') ++s;
2332 sv_catpv(sv, start);
2333 if (*(start-1) == 'm') {
2335 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2336 sv_catpv( sv, " ()");
2340 Perl_croak(aTHX_ "Module name required with -%c option",
2342 sv_catpvn(sv, start, s-start);
2343 sv_catpv(sv, " split(/,/,q{");
2349 PL_preambleav = newAV();
2350 av_push(PL_preambleav, sv);
2353 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2365 PL_doswitches = TRUE;
2370 Perl_croak(aTHX_ "Too late for \"-T\" option");
2374 #ifdef MACOS_TRADITIONAL
2375 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2377 PL_do_undump = TRUE;
2386 PerlIO_printf(PerlIO_stdout(),
2387 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2388 PL_patchlevel, ARCHNAME));
2390 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2391 PerlIO_printf(PerlIO_stdout(),
2392 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2393 PerlIO_printf(PerlIO_stdout(),
2394 Perl_form(aTHX_ " built under %s at %s %s\n",
2395 OSNAME, __DATE__, __TIME__));
2396 PerlIO_printf(PerlIO_stdout(),
2397 Perl_form(aTHX_ " OS Specific Release: %s\n",
2401 #if defined(LOCAL_PATCH_COUNT)
2402 if (LOCAL_PATCH_COUNT > 0)
2403 PerlIO_printf(PerlIO_stdout(),
2404 "\n(with %d registered patch%s, "
2405 "see perl -V for more detail)",
2406 (int)LOCAL_PATCH_COUNT,
2407 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2410 PerlIO_printf(PerlIO_stdout(),
2411 "\n\nCopyright 1987-2001, Larry Wall\n");
2412 #ifdef MACOS_TRADITIONAL
2413 PerlIO_printf(PerlIO_stdout(),
2414 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2417 PerlIO_printf(PerlIO_stdout(),
2418 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2421 PerlIO_printf(PerlIO_stdout(),
2422 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2423 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2426 PerlIO_printf(PerlIO_stdout(),
2427 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2428 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2431 PerlIO_printf(PerlIO_stdout(),
2432 "atariST series port, ++jrb bammi@cadence.com\n");
2435 PerlIO_printf(PerlIO_stdout(),
2436 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2439 PerlIO_printf(PerlIO_stdout(),
2440 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2443 PerlIO_printf(PerlIO_stdout(),
2444 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2447 PerlIO_printf(PerlIO_stdout(),
2448 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2451 PerlIO_printf(PerlIO_stdout(),
2452 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2455 PerlIO_printf(PerlIO_stdout(),
2456 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2459 PerlIO_printf(PerlIO_stdout(),
2460 "MiNT port by Guido Flohr, 1997-1999\n");
2463 PerlIO_printf(PerlIO_stdout(),
2464 "EPOC port by Olaf Flebbe, 1999-2000\n");
2467 printf("WINCE port by Rainer Keuchel, 2001\n");
2468 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2471 #ifdef BINARY_BUILD_NOTICE
2472 BINARY_BUILD_NOTICE;
2474 PerlIO_printf(PerlIO_stdout(),
2476 Perl may be copied only under the terms of either the Artistic License or the\n\
2477 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2478 Complete documentation for Perl, including FAQ lists, should be found on\n\
2479 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2480 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2483 if (! (PL_dowarn & G_WARN_ALL_MASK))
2484 PL_dowarn |= G_WARN_ON;
2488 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2489 PL_compiling.cop_warnings = pWARN_ALL ;
2493 PL_dowarn = G_WARN_ALL_OFF;
2494 PL_compiling.cop_warnings = pWARN_NONE ;
2499 if (s[1] == '-') /* Additional switches on #! line. */
2504 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2510 #ifdef ALTERNATE_SHEBANG
2511 case 'S': /* OS/2 needs -S on "extproc" line. */
2519 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2524 /* compliments of Tom Christiansen */
2526 /* unexec() can be found in the Gnu emacs distribution */
2527 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2530 Perl_my_unexec(pTHX)
2538 prog = newSVpv(BIN_EXP, 0);
2539 sv_catpv(prog, "/perl");
2540 file = newSVpv(PL_origfilename, 0);
2541 sv_catpv(file, ".perldump");
2543 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2544 /* unexec prints msg to stderr in case of failure */
2545 PerlProc_exit(status);
2548 # include <lib$routines.h>
2549 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2551 ABORT(); /* for use with undump */
2556 /* initialize curinterp */
2561 #ifdef PERL_OBJECT /* XXX kludge */
2564 PL_chopset = " \n-"; \
2565 PL_copline = NOLINE; \
2566 PL_curcop = &PL_compiling;\
2567 PL_curcopdb = NULL; \
2569 PL_dumpindent = 4; \
2570 PL_laststatval = -1; \
2571 PL_laststype = OP_STAT; \
2572 PL_maxscream = -1; \
2573 PL_maxsysfd = MAXSYSFD; \
2574 PL_statname = Nullsv; \
2575 PL_tmps_floor = -1; \
2577 PL_op_mask = NULL; \
2578 PL_laststatval = -1; \
2579 PL_laststype = OP_STAT; \
2580 PL_mess_sv = Nullsv; \
2581 PL_splitstr = " "; \
2582 PL_generation = 100; \
2583 PL_exitlist = NULL; \
2584 PL_exitlistlen = 0; \
2586 PL_in_clean_objs = FALSE; \
2587 PL_in_clean_all = FALSE; \
2588 PL_profiledata = NULL; \
2590 PL_rsfp_filters = Nullav; \
2595 # ifdef MULTIPLICITY
2596 # define PERLVAR(var,type)
2597 # define PERLVARA(var,n,type)
2598 # if defined(PERL_IMPLICIT_CONTEXT)
2599 # if defined(USE_THREADS)
2600 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2601 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2602 # else /* !USE_THREADS */
2603 # define PERLVARI(var,type,init) aTHX->var = init;
2604 # define PERLVARIC(var,type,init) aTHX->var = init;
2605 # endif /* USE_THREADS */
2607 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2608 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2610 # include "intrpvar.h"
2611 # ifndef USE_THREADS
2612 # include "thrdvar.h"
2619 # define PERLVAR(var,type)
2620 # define PERLVARA(var,n,type)
2621 # define PERLVARI(var,type,init) PL_##var = init;
2622 # define PERLVARIC(var,type,init) PL_##var = init;
2623 # include "intrpvar.h"
2624 # ifndef USE_THREADS
2625 # include "thrdvar.h"
2637 S_init_main_stash(pTHX)
2641 /* Note that strtab is a rather special HV. Assumptions are made
2642 about not iterating on it, and not adding tie magic to it.
2643 It is properly deallocated in perl_destruct() */
2644 PL_strtab = newHV();
2646 MUTEX_INIT(&PL_strtab_mutex);
2648 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2649 hv_ksplit(PL_strtab, 512);
2651 PL_curstash = PL_defstash = newHV();
2652 PL_curstname = newSVpvn("main",4);
2653 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2654 SvREFCNT_dec(GvHV(gv));
2655 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2657 HvNAME(PL_defstash) = savepv("main");
2658 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2659 GvMULTI_on(PL_incgv);
2660 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2661 GvMULTI_on(PL_hintgv);
2662 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2663 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2664 GvMULTI_on(PL_errgv);
2665 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2666 GvMULTI_on(PL_replgv);
2667 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2668 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2669 sv_setpvn(ERRSV, "", 0);
2670 PL_curstash = PL_defstash;
2671 CopSTASH_set(&PL_compiling, PL_defstash);
2672 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2673 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2674 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2675 /* We must init $/ before switches are processed. */
2676 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2680 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2685 PL_origfilename = savepv("-e");
2688 /* if find_script() returns, it returns a malloc()-ed value */
2689 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2691 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2692 char *s = scriptname + 8;
2693 *fdscript = atoi(s);
2697 scriptname = savepv(s + 1);
2698 Safefree(PL_origfilename);
2699 PL_origfilename = scriptname;
2705 Safefree(CopFILE(PL_curcop));
2707 SvREFCNT_dec(CopFILEGV(PL_curcop));
2709 CopFILE_set(PL_curcop, PL_origfilename);
2710 if (strEQ(PL_origfilename,"-"))
2712 if (*fdscript >= 0) {
2713 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2714 #if defined(HAS_FCNTL) && defined(F_SETFD)
2716 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2719 else if (PL_preprocess) {
2720 char *cpp_cfg = CPPSTDIN;
2721 SV *cpp = newSVpvn("",0);
2722 SV *cmd = NEWSV(0,0);
2724 if (strEQ(cpp_cfg, "cppstdin"))
2725 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2726 sv_catpv(cpp, cpp_cfg);
2728 sv_catpvn(sv, "-I", 2);
2729 sv_catpv(sv,PRIVLIB_EXP);
2731 DEBUG_P(PerlIO_printf(Perl_debug_log,
2732 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2733 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2734 #if defined(MSDOS) || defined(WIN32)
2735 Perl_sv_setpvf(aTHX_ cmd, "\
2736 sed %s -e \"/^[^#]/b\" \
2737 -e \"/^#[ ]*include[ ]/b\" \
2738 -e \"/^#[ ]*define[ ]/b\" \
2739 -e \"/^#[ ]*if[ ]/b\" \
2740 -e \"/^#[ ]*ifdef[ ]/b\" \
2741 -e \"/^#[ ]*ifndef[ ]/b\" \
2742 -e \"/^#[ ]*else/b\" \
2743 -e \"/^#[ ]*elif[ ]/b\" \
2744 -e \"/^#[ ]*undef[ ]/b\" \
2745 -e \"/^#[ ]*endif/b\" \
2747 %s | %"SVf" -C %"SVf" %s",
2748 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2751 Perl_sv_setpvf(aTHX_ cmd, "\
2752 %s %s -e '/^[^#]/b' \
2753 -e '/^#[ ]*include[ ]/b' \
2754 -e '/^#[ ]*define[ ]/b' \
2755 -e '/^#[ ]*if[ ]/b' \
2756 -e '/^#[ ]*ifdef[ ]/b' \
2757 -e '/^#[ ]*ifndef[ ]/b' \
2758 -e '/^#[ ]*else/b' \
2759 -e '/^#[ ]*elif[ ]/b' \
2760 -e '/^#[ ]*undef[ ]/b' \
2761 -e '/^#[ ]*endif/b' \
2763 %s | %"SVf" %"SVf" %s",
2765 Perl_sv_setpvf(aTHX_ cmd, "\
2766 %s %s -e '/^[^#]/b' \
2767 -e '/^#[ ]*include[ ]/b' \
2768 -e '/^#[ ]*define[ ]/b' \
2769 -e '/^#[ ]*if[ ]/b' \
2770 -e '/^#[ ]*ifdef[ ]/b' \
2771 -e '/^#[ ]*ifndef[ ]/b' \
2772 -e '/^#[ ]*else/b' \
2773 -e '/^#[ ]*elif[ ]/b' \
2774 -e '/^#[ ]*undef[ ]/b' \
2775 -e '/^#[ ]*endif/b' \
2777 %s | %"SVf" -C %"SVf" %s",
2784 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2786 scriptname, cpp, sv, CPPMINUS);
2787 PL_doextract = FALSE;
2788 #ifdef IAMSUID /* actually, this is caught earlier */
2789 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2791 (void)seteuid(PL_uid); /* musn't stay setuid root */
2794 (void)setreuid((Uid_t)-1, PL_uid);
2796 #ifdef HAS_SETRESUID
2797 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2799 PerlProc_setuid(PL_uid);
2803 if (PerlProc_geteuid() != PL_uid)
2804 Perl_croak(aTHX_ "Can't do seteuid!\n");
2806 #endif /* IAMSUID */
2807 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2811 else if (!*scriptname) {
2812 forbid_setid("program input from stdin");
2813 PL_rsfp = PerlIO_stdin();
2816 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2817 #if defined(HAS_FCNTL) && defined(F_SETFD)
2819 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2824 #ifndef IAMSUID /* in case script is not readable before setuid */
2826 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2827 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2830 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2831 (int)PERL_REVISION, (int)PERL_VERSION,
2832 (int)PERL_SUBVERSION), PL_origargv);
2833 Perl_croak(aTHX_ "Can't do setuid\n");
2839 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2842 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2843 CopFILE(PL_curcop), Strerror(errno));
2849 * I_SYSSTATVFS HAS_FSTATVFS
2851 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2852 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2853 * here so that metaconfig picks them up. */
2857 S_fd_on_nosuid_fs(pTHX_ int fd)
2859 int check_okay = 0; /* able to do all the required sys/libcalls */
2860 int on_nosuid = 0; /* the fd is on a nosuid fs */
2862 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2863 * fstatvfs() is UNIX98.
2864 * fstatfs() is 4.3 BSD.
2865 * ustat()+getmnt() is pre-4.3 BSD.
2866 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2867 * an irrelevant filesystem while trying to reach the right one.
2870 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2872 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2873 defined(HAS_FSTATVFS)
2874 # define FD_ON_NOSUID_CHECK_OKAY
2875 struct statvfs stfs;
2877 check_okay = fstatvfs(fd, &stfs) == 0;
2878 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2879 # endif /* fstatvfs */
2881 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2882 defined(PERL_MOUNT_NOSUID) && \
2883 defined(HAS_FSTATFS) && \
2884 defined(HAS_STRUCT_STATFS) && \
2885 defined(HAS_STRUCT_STATFS_F_FLAGS)
2886 # define FD_ON_NOSUID_CHECK_OKAY
2889 check_okay = fstatfs(fd, &stfs) == 0;
2890 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2891 # endif /* fstatfs */
2893 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2894 defined(PERL_MOUNT_NOSUID) && \
2895 defined(HAS_FSTAT) && \
2896 defined(HAS_USTAT) && \
2897 defined(HAS_GETMNT) && \
2898 defined(HAS_STRUCT_FS_DATA) && \
2900 # define FD_ON_NOSUID_CHECK_OKAY
2903 if (fstat(fd, &fdst) == 0) {
2905 if (ustat(fdst.st_dev, &us) == 0) {
2907 /* NOSTAT_ONE here because we're not examining fields which
2908 * vary between that case and STAT_ONE. */
2909 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2910 size_t cmplen = sizeof(us.f_fname);
2911 if (sizeof(fsd.fd_req.path) < cmplen)
2912 cmplen = sizeof(fsd.fd_req.path);
2913 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2914 fdst.st_dev == fsd.fd_req.dev) {
2916 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2922 # endif /* fstat+ustat+getmnt */
2924 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2925 defined(HAS_GETMNTENT) && \
2926 defined(HAS_HASMNTOPT) && \
2927 defined(MNTOPT_NOSUID)
2928 # define FD_ON_NOSUID_CHECK_OKAY
2929 FILE *mtab = fopen("/etc/mtab", "r");
2930 struct mntent *entry;
2931 struct stat stb, fsb;
2933 if (mtab && (fstat(fd, &stb) == 0)) {
2934 while (entry = getmntent(mtab)) {
2935 if (stat(entry->mnt_dir, &fsb) == 0
2936 && fsb.st_dev == stb.st_dev)
2938 /* found the filesystem */
2940 if (hasmntopt(entry, MNTOPT_NOSUID))
2943 } /* A single fs may well fail its stat(). */
2948 # endif /* getmntent+hasmntopt */
2951 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2954 #endif /* IAMSUID */
2957 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2963 /* do we need to emulate setuid on scripts? */
2965 /* This code is for those BSD systems that have setuid #! scripts disabled
2966 * in the kernel because of a security problem. Merely defining DOSUID
2967 * in perl will not fix that problem, but if you have disabled setuid
2968 * scripts in the kernel, this will attempt to emulate setuid and setgid
2969 * on scripts that have those now-otherwise-useless bits set. The setuid
2970 * root version must be called suidperl or sperlN.NNN. If regular perl
2971 * discovers that it has opened a setuid script, it calls suidperl with
2972 * the same argv that it had. If suidperl finds that the script it has
2973 * just opened is NOT setuid root, it sets the effective uid back to the
2974 * uid. We don't just make perl setuid root because that loses the
2975 * effective uid we had before invoking perl, if it was different from the
2978 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2979 * be defined in suidperl only. suidperl must be setuid root. The
2980 * Configure script will set this up for you if you want it.
2986 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2987 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2988 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2993 #ifndef HAS_SETREUID
2994 /* On this access check to make sure the directories are readable,
2995 * there is actually a small window that the user could use to make
2996 * filename point to an accessible directory. So there is a faint
2997 * chance that someone could execute a setuid script down in a
2998 * non-accessible directory. I don't know what to do about that.
2999 * But I don't think it's too important. The manual lies when
3000 * it says access() is useful in setuid programs.
3002 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3003 Perl_croak(aTHX_ "Permission denied");
3005 /* If we can swap euid and uid, then we can determine access rights
3006 * with a simple stat of the file, and then compare device and
3007 * inode to make sure we did stat() on the same file we opened.
3008 * Then we just have to make sure he or she can execute it.
3011 struct stat tmpstatbuf;
3015 setreuid(PL_euid,PL_uid) < 0
3018 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3021 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3022 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3023 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3024 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3025 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3026 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3027 Perl_croak(aTHX_ "Permission denied");
3029 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3030 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3031 (void)PerlIO_close(PL_rsfp);
3032 Perl_croak(aTHX_ "Permission denied\n");
3036 setreuid(PL_uid,PL_euid) < 0
3038 # if defined(HAS_SETRESUID)
3039 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3042 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3043 Perl_croak(aTHX_ "Can't reswap uid and euid");
3044 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3045 Perl_croak(aTHX_ "Permission denied\n");
3047 #endif /* HAS_SETREUID */
3048 #endif /* IAMSUID */
3050 if (!S_ISREG(PL_statbuf.st_mode))
3051 Perl_croak(aTHX_ "Permission denied");
3052 if (PL_statbuf.st_mode & S_IWOTH)
3053 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3054 PL_doswitches = FALSE; /* -s is insecure in suid */
3055 CopLINE_inc(PL_curcop);
3056 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3057 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3058 Perl_croak(aTHX_ "No #! line");
3059 s = SvPV(PL_linestr,n_a)+2;
3061 while (!isSPACE(*s)) s++;
3062 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3063 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3064 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3065 Perl_croak(aTHX_ "Not a perl script");
3066 while (*s == ' ' || *s == '\t') s++;
3068 * #! arg must be what we saw above. They can invoke it by
3069 * mentioning suidperl explicitly, but they may not add any strange
3070 * arguments beyond what #! says if they do invoke suidperl that way.
3072 len = strlen(validarg);
3073 if (strEQ(validarg," PHOOEY ") ||
3074 strnNE(s,validarg,len) || !isSPACE(s[len]))
3075 Perl_croak(aTHX_ "Args must match #! line");
3078 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3079 PL_euid == PL_statbuf.st_uid)
3081 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3082 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3083 #endif /* IAMSUID */
3085 if (PL_euid) { /* oops, we're not the setuid root perl */
3086 (void)PerlIO_close(PL_rsfp);
3089 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3090 (int)PERL_REVISION, (int)PERL_VERSION,
3091 (int)PERL_SUBVERSION), PL_origargv);
3093 Perl_croak(aTHX_ "Can't do setuid\n");
3096 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3098 (void)setegid(PL_statbuf.st_gid);
3101 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3103 #ifdef HAS_SETRESGID
3104 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3106 PerlProc_setgid(PL_statbuf.st_gid);
3110 if (PerlProc_getegid() != PL_statbuf.st_gid)
3111 Perl_croak(aTHX_ "Can't do setegid!\n");
3113 if (PL_statbuf.st_mode & S_ISUID) {
3114 if (PL_statbuf.st_uid != PL_euid)
3116 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3119 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3121 #ifdef HAS_SETRESUID
3122 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3124 PerlProc_setuid(PL_statbuf.st_uid);
3128 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3129 Perl_croak(aTHX_ "Can't do seteuid!\n");
3131 else if (PL_uid) { /* oops, mustn't run as root */
3133 (void)seteuid((Uid_t)PL_uid);
3136 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3138 #ifdef HAS_SETRESUID
3139 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3141 PerlProc_setuid((Uid_t)PL_uid);
3145 if (PerlProc_geteuid() != PL_uid)
3146 Perl_croak(aTHX_ "Can't do seteuid!\n");
3149 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3150 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3153 else if (PL_preprocess)
3154 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3155 else if (fdscript >= 0)
3156 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3158 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3160 /* We absolutely must clear out any saved ids here, so we */
3161 /* exec the real perl, substituting fd script for scriptname. */
3162 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3163 PerlIO_rewind(PL_rsfp);
3164 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3165 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3166 if (!PL_origargv[which])
3167 Perl_croak(aTHX_ "Permission denied");
3168 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3169 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3170 #if defined(HAS_FCNTL) && defined(F_SETFD)
3171 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3173 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3174 (int)PERL_REVISION, (int)PERL_VERSION,
3175 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3176 Perl_croak(aTHX_ "Can't do setuid\n");
3177 #endif /* IAMSUID */
3179 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3180 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3181 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3182 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3184 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3187 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3188 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3189 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3190 /* not set-id, must be wrapped */
3196 S_find_beginning(pTHX)
3198 register char *s, *s2;
3200 /* skip forward in input to the real script? */
3203 #ifdef MACOS_TRADITIONAL
3204 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3206 while (PL_doextract || gMacPerl_AlwaysExtract) {
3207 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3208 if (!gMacPerl_AlwaysExtract)
3209 Perl_croak(aTHX_ "No Perl script found in input\n");
3211 if (PL_doextract) /* require explicit override ? */
3212 if (!OverrideExtract(PL_origfilename))
3213 Perl_croak(aTHX_ "User aborted script\n");
3215 PL_doextract = FALSE;
3217 /* Pater peccavi, file does not have #! */
3218 PerlIO_rewind(PL_rsfp);
3223 while (PL_doextract) {
3224 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3225 Perl_croak(aTHX_ "No Perl script found in input\n");
3228 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3229 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3230 PL_doextract = FALSE;
3231 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3233 while (*s == ' ' || *s == '\t') s++;
3235 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3236 if (strnEQ(s2-4,"perl",4))
3238 while ((s = moreswitches(s)))
3241 #ifdef MACOS_TRADITIONAL
3252 PL_uid = PerlProc_getuid();
3253 PL_euid = PerlProc_geteuid();
3254 PL_gid = PerlProc_getgid();
3255 PL_egid = PerlProc_getegid();
3257 PL_uid |= PL_gid << 16;
3258 PL_euid |= PL_egid << 16;
3260 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3264 S_forbid_setid(pTHX_ char *s)
3266 if (PL_euid != PL_uid)
3267 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3268 if (PL_egid != PL_gid)
3269 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3273 Perl_init_debugger(pTHX)
3275 HV *ostash = PL_curstash;
3277 PL_curstash = PL_debstash;
3278 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3279 AvREAL_off(PL_dbargs);
3280 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3281 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3282 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3283 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3284 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3285 sv_setiv(PL_DBsingle, 0);
3286 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3287 sv_setiv(PL_DBtrace, 0);
3288 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3289 sv_setiv(PL_DBsignal, 0);
3290 PL_curstash = ostash;
3293 #ifndef STRESS_REALLOC
3294 #define REASONABLE(size) (size)
3296 #define REASONABLE(size) (1) /* unreasonable */
3300 Perl_init_stacks(pTHX)
3302 /* start with 128-item stack and 8K cxstack */
3303 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3304 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3305 PL_curstackinfo->si_type = PERLSI_MAIN;
3306 PL_curstack = PL_curstackinfo->si_stack;
3307 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3309 PL_stack_base = AvARRAY(PL_curstack);
3310 PL_stack_sp = PL_stack_base;
3311 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3313 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3316 PL_tmps_max = REASONABLE(128);
3318 New(54,PL_markstack,REASONABLE(32),I32);
3319 PL_markstack_ptr = PL_markstack;
3320 PL_markstack_max = PL_markstack + REASONABLE(32);
3324 New(54,PL_scopestack,REASONABLE(32),I32);
3325 PL_scopestack_ix = 0;
3326 PL_scopestack_max = REASONABLE(32);
3328 New(54,PL_savestack,REASONABLE(128),ANY);
3329 PL_savestack_ix = 0;
3330 PL_savestack_max = REASONABLE(128);
3332 New(54,PL_retstack,REASONABLE(16),OP*);
3334 PL_retstack_max = REASONABLE(16);
3342 while (PL_curstackinfo->si_next)
3343 PL_curstackinfo = PL_curstackinfo->si_next;
3344 while (PL_curstackinfo) {
3345 PERL_SI *p = PL_curstackinfo->si_prev;
3346 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3347 Safefree(PL_curstackinfo->si_cxstack);
3348 Safefree(PL_curstackinfo);
3349 PL_curstackinfo = p;
3351 Safefree(PL_tmps_stack);
3352 Safefree(PL_markstack);
3353 Safefree(PL_scopestack);
3354 Safefree(PL_savestack);
3355 Safefree(PL_retstack);
3359 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3370 lex_start(PL_linestr);
3372 PL_subname = newSVpvn("main",4);
3376 S_init_predump_symbols(pTHX)
3381 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3382 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3383 GvMULTI_on(PL_stdingv);
3384 io = GvIOp(PL_stdingv);
3385 IoTYPE(io) = IoTYPE_RDONLY;
3386 IoIFP(io) = PerlIO_stdin();
3387 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3389 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3391 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3394 IoTYPE(io) = IoTYPE_WRONLY;
3395 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3397 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3399 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3401 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3402 GvMULTI_on(PL_stderrgv);
3403 io = GvIOp(PL_stderrgv);
3404 IoTYPE(io) = IoTYPE_WRONLY;
3405 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3406 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3408 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3410 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3413 Safefree(PL_osname);
3414 PL_osname = savepv(OSNAME);
3418 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3423 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3424 char **dup_env_base = 0;
3425 int dup_env_count = 0;
3428 argc--,argv++; /* skip name of script */
3429 if (PL_doswitches) {
3430 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3433 if (argv[0][1] == '-' && !argv[0][2]) {
3437 if ((s = strchr(argv[0], '='))) {
3439 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3442 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3445 PL_toptarget = NEWSV(0,0);
3446 sv_upgrade(PL_toptarget, SVt_PVFM);
3447 sv_setpvn(PL_toptarget, "", 0);
3448 PL_bodytarget = NEWSV(0,0);
3449 sv_upgrade(PL_bodytarget, SVt_PVFM);
3450 sv_setpvn(PL_bodytarget, "", 0);
3451 PL_formtarget = PL_bodytarget;
3454 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3455 #ifdef MACOS_TRADITIONAL
3456 /* $0 is not majick on a Mac */
3457 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3459 sv_setpv(GvSV(tmpgv),PL_origfilename);
3460 magicname("0", "0", 1);
3463 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3465 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3467 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3469 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3470 GvMULTI_on(PL_argvgv);
3471 (void)gv_AVadd(PL_argvgv);
3472 av_clear(GvAVn(PL_argvgv));
3473 for (; argc > 0; argc--,argv++) {
3474 SV *sv = newSVpv(argv[0],0);
3475 av_push(GvAVn(PL_argvgv),sv);
3476 if (PL_widesyscalls)
3477 (void)sv_utf8_decode(sv);
3480 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3482 GvMULTI_on(PL_envgv);
3483 hv = GvHVn(PL_envgv);
3484 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3485 #ifdef USE_ENVIRON_ARRAY
3486 /* Note that if the supplied env parameter is actually a copy
3487 of the global environ then it may now point to free'd memory
3488 if the environment has been modified since. To avoid this
3489 problem we treat env==NULL as meaning 'use the default'
3494 environ[0] = Nullch;
3495 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3498 for (env_base = env; *env; env++)
3500 if ((dup_env_base = (char **)
3501 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3503 for (env = env_base, dup_env = dup_env_base;
3506 /* With environ one needs to use safesysmalloc(). */
3507 *dup_env = safesysmalloc(strlen(*env) + 1);
3508 (void)strcpy(*dup_env, *env);
3514 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3516 for (; *env; env++) {
3517 if (!(s = strchr(*env,'=')))
3523 sv = newSVpv(s--,0);
3524 (void)hv_store(hv, *env, s - *env, sv, 0);
3527 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3530 for (dup_env = dup_env_base; *dup_env; dup_env++)
3531 safesysfree(*dup_env);
3532 safesysfree(dup_env_base);
3534 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3535 #endif /* USE_ENVIRON_ARRAY */
3538 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3539 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3543 S_init_perllib(pTHX)
3548 s = PerlEnv_getenv("PERL5LIB");
3550 incpush(s, TRUE, TRUE);
3552 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3554 /* Treat PERL5?LIB as a possible search list logical name -- the
3555 * "natural" VMS idiom for a Unix path string. We allow each
3556 * element to be a set of |-separated directories for compatibility.
3560 if (my_trnlnm("PERL5LIB",buf,0))
3561 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3563 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3567 /* Use the ~-expanded versions of APPLLIB (undocumented),
3568 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3571 incpush(APPLLIB_EXP, TRUE, TRUE);
3575 incpush(ARCHLIB_EXP, FALSE, FALSE);
3577 #ifdef MACOS_TRADITIONAL
3579 struct stat tmpstatbuf;
3580 SV * privdir = NEWSV(55, 0);
3581 char * macperl = PerlEnv_getenv("MACPERL");
3586 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3587 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3588 incpush(SvPVX(privdir), TRUE, FALSE);
3589 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3590 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3591 incpush(SvPVX(privdir), TRUE, FALSE);
3593 SvREFCNT_dec(privdir);
3596 incpush(":", FALSE, FALSE);
3599 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3602 incpush(PRIVLIB_EXP, TRUE, FALSE);
3604 incpush(PRIVLIB_EXP, FALSE, FALSE);
3608 /* sitearch is always relative to sitelib on Windows for
3609 * DLL-based path intuition to work correctly */
3610 # if !defined(WIN32)
3611 incpush(SITEARCH_EXP, FALSE, FALSE);
3617 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3619 incpush(SITELIB_EXP, FALSE, FALSE);
3623 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3624 incpush(SITELIB_STEM, FALSE, TRUE);
3627 #ifdef PERL_VENDORARCH_EXP
3628 /* vendorarch is always relative to vendorlib on Windows for
3629 * DLL-based path intuition to work correctly */
3630 # if !defined(WIN32)
3631 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3635 #ifdef PERL_VENDORLIB_EXP
3637 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3639 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3643 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3644 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3647 #ifdef PERL_OTHERLIBDIRS
3648 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3652 incpush(".", FALSE, FALSE);
3653 #endif /* MACOS_TRADITIONAL */
3656 #if defined(DOSISH) || defined(EPOC)
3657 # define PERLLIB_SEP ';'
3660 # define PERLLIB_SEP '|'
3662 # if defined(MACOS_TRADITIONAL)
3663 # define PERLLIB_SEP ','
3665 # define PERLLIB_SEP ':'
3669 #ifndef PERLLIB_MANGLE
3670 # define PERLLIB_MANGLE(s,n) (s)
3674 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3676 SV *subdir = Nullsv;
3681 if (addsubdirs || addoldvers) {
3682 subdir = sv_newmortal();
3685 /* Break at all separators */
3687 SV *libdir = NEWSV(55,0);
3690 /* skip any consecutive separators */
3691 while ( *p == PERLLIB_SEP ) {
3692 /* Uncomment the next line for PATH semantics */
3693 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3697 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3698 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3703 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3704 p = Nullch; /* break out */
3706 #ifdef MACOS_TRADITIONAL
3707 if (!strchr(SvPVX(libdir), ':'))
3708 sv_insert(libdir, 0, 0, ":", 1);
3709 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3710 sv_catpv(libdir, ":");
3714 * BEFORE pushing libdir onto @INC we may first push version- and
3715 * archname-specific sub-directories.
3717 if (addsubdirs || addoldvers) {
3718 #ifdef PERL_INC_VERSION_LIST
3719 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3720 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3721 const char **incver;
3723 struct stat tmpstatbuf;
3728 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3730 while (unix[len-1] == '/') len--; /* Cosmetic */
3731 sv_usepvn(libdir,unix,len);
3734 PerlIO_printf(Perl_error_log,
3735 "Failed to unixify @INC element \"%s\"\n",
3739 #ifdef MACOS_TRADITIONAL
3740 #define PERL_AV_SUFFIX_FMT ""
3741 #define PERL_ARCH_FMT "%s:"
3742 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3744 #define PERL_AV_SUFFIX_FMT "/"
3745 #define PERL_ARCH_FMT "/%s"
3746 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3748 /* .../version/archname if -d .../version/archname */
3749 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3751 (int)PERL_REVISION, (int)PERL_VERSION,
3752 (int)PERL_SUBVERSION, ARCHNAME);
3753 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3754 S_ISDIR(tmpstatbuf.st_mode))
3755 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3757 /* .../version if -d .../version */
3758 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3759 (int)PERL_REVISION, (int)PERL_VERSION,
3760 (int)PERL_SUBVERSION);
3761 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3762 S_ISDIR(tmpstatbuf.st_mode))
3763 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3765 /* .../archname if -d .../archname */
3766 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3767 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3768 S_ISDIR(tmpstatbuf.st_mode))
3769 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3772 #ifdef PERL_INC_VERSION_LIST
3774 for (incver = incverlist; *incver; incver++) {
3775 /* .../xxx if -d .../xxx */
3776 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3777 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3778 S_ISDIR(tmpstatbuf.st_mode))
3779 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3785 /* finally push this lib directory on the end of @INC */
3786 av_push(GvAVn(PL_incgv), libdir);
3791 STATIC struct perl_thread *
3792 S_init_main_thread(pTHX)
3794 #if !defined(PERL_IMPLICIT_CONTEXT)
3795 struct perl_thread *thr;
3799 Newz(53, thr, 1, struct perl_thread);
3800 PL_curcop = &PL_compiling;
3801 thr->interp = PERL_GET_INTERP;
3802 thr->cvcache = newHV();
3803 thr->threadsv = newAV();
3804 /* thr->threadsvp is set when find_threadsv is called */
3805 thr->specific = newAV();
3806 thr->flags = THRf_R_JOINABLE;
3807 MUTEX_INIT(&thr->mutex);
3808 /* Handcraft thrsv similarly to mess_sv */
3809 New(53, PL_thrsv, 1, SV);
3810 Newz(53, xpv, 1, XPV);
3811 SvFLAGS(PL_thrsv) = SVt_PV;
3812 SvANY(PL_thrsv) = (void*)xpv;
3813 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3814 SvPVX(PL_thrsv) = (char*)thr;
3815 SvCUR_set(PL_thrsv, sizeof(thr));
3816 SvLEN_set(PL_thrsv, sizeof(thr));
3817 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3818 thr->oursv = PL_thrsv;
3819 PL_chopset = " \n-";
3822 MUTEX_LOCK(&PL_threads_mutex);
3828 MUTEX_UNLOCK(&PL_threads_mutex);
3830 #ifdef HAVE_THREAD_INTERN
3831 Perl_init_thread_intern(thr);
3834 #ifdef SET_THREAD_SELF
3835 SET_THREAD_SELF(thr);
3837 thr->self = pthread_self();
3838 #endif /* SET_THREAD_SELF */
3842 * These must come after the thread self setting
3843 * because sv_setpvn does SvTAINT and the taint
3844 * fields thread selfness being set.
3846 PL_toptarget = NEWSV(0,0);
3847 sv_upgrade(PL_toptarget, SVt_PVFM);
3848 sv_setpvn(PL_toptarget, "", 0);
3849 PL_bodytarget = NEWSV(0,0);
3850 sv_upgrade(PL_bodytarget, SVt_PVFM);
3851 sv_setpvn(PL_bodytarget, "", 0);
3852 PL_formtarget = PL_bodytarget;
3853 thr->errsv = newSVpvn("", 0);
3854 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3857 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3858 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3859 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3860 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3861 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3862 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3864 PL_reginterp_cnt = 0;
3868 #endif /* USE_THREADS */
3871 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3874 line_t oldline = CopLINE(PL_curcop);
3880 while (AvFILL(paramList) >= 0) {
3881 cv = (CV*)av_shift(paramList);
3882 if (PL_savebegin && (paramList == PL_beginav)) {
3883 /* save PL_beginav for compiler */
3884 if (! PL_beginav_save)
3885 PL_beginav_save = newAV();
3886 av_push(PL_beginav_save, (SV*)cv);
3890 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3891 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3897 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3901 (void)SvPV(atsv, len);
3904 PL_curcop = &PL_compiling;
3905 CopLINE_set(PL_curcop, oldline);
3906 if (paramList == PL_beginav)
3907 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3909 Perl_sv_catpvf(aTHX_ atsv,
3910 "%s failed--call queue aborted",
3911 paramList == PL_checkav ? "CHECK"
3912 : paramList == PL_initav ? "INIT"
3914 while (PL_scopestack_ix > oldscope)
3917 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3924 /* my_exit() was called */
3925 while (PL_scopestack_ix > oldscope)
3928 PL_curstash = PL_defstash;
3929 PL_curcop = &PL_compiling;
3930 CopLINE_set(PL_curcop, oldline);
3932 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3933 if (paramList == PL_beginav)
3934 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3936 Perl_croak(aTHX_ "%s failed--call queue aborted",
3937 paramList == PL_checkav ? "CHECK"
3938 : paramList == PL_initav ? "INIT"
3945 PL_curcop = &PL_compiling;
3946 CopLINE_set(PL_curcop, oldline);
3949 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3957 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3959 S_vcall_list_body(pTHX_ va_list args)
3961 CV *cv = va_arg(args, CV*);
3962 return call_list_body(cv);
3967 S_call_list_body(pTHX_ CV *cv)
3969 PUSHMARK(PL_stack_sp);
3970 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3975 Perl_my_exit(pTHX_ U32 status)
3977 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3978 thr, (unsigned long) status));
3987 STATUS_NATIVE_SET(status);
3994 Perl_my_failure_exit(pTHX)
3997 if (vaxc$errno & 1) {
3998 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3999 STATUS_NATIVE_SET(44);
4002 if (!vaxc$errno && errno) /* unlikely */
4003 STATUS_NATIVE_SET(44);
4005 STATUS_NATIVE_SET(vaxc$errno);
4010 STATUS_POSIX_SET(errno);
4012 exitstatus = STATUS_POSIX >> 8;
4013 if (exitstatus & 255)
4014 STATUS_POSIX_SET(exitstatus);
4016 STATUS_POSIX_SET(255);
4023 S_my_exit_jump(pTHX)
4025 register PERL_CONTEXT *cx;
4030 SvREFCNT_dec(PL_e_script);
4031 PL_e_script = Nullsv;
4034 POPSTACK_TO(PL_mainstack);
4035 if (cxstack_ix >= 0) {
4038 POPBLOCK(cx,PL_curpm);
4050 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
4053 p = SvPVX(PL_e_script);
4054 nl = strchr(p, '\n');
4055 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4057 filter_del(read_e_script);
4060 sv_catpvn(buf_sv, p, nl-p);
4061 sv_chop(PL_e_script, nl);