3 * Copyright (c) 1987-2001 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
60 # if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
71 PERL_SET_THX(my_perl); \
75 # define INIT_TLS_AND_INTERP \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
80 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
102 Zero(my_perl, 1, PerlInterpreter);
119 =for apidoc perl_alloc
121 Allocates a new Perl interpreter. See L<perlembed>.
129 PerlInterpreter *my_perl;
131 /* New() needs interpreter, so call malloc() instead */
132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
135 Zero(my_perl, 1, PerlInterpreter);
138 #endif /* PERL_IMPLICIT_SYS */
141 =for apidoc perl_construct
143 Initializes a new Perl interpreter. See L<perlembed>.
149 perl_construct(pTHXx)
153 struct perl_thread *thr = NULL;
154 #endif /* FAKE_THREADS */
155 #endif /* USE_THREADS */
159 PL_perl_destruct_level = 1;
161 if (PL_perl_destruct_level > 0)
165 /* Init the real globals (and main thread)? */
168 MUTEX_INIT(&PL_sv_mutex);
170 * Safe to use basic SV functions from now on (though
171 * not things like mortals or tainting yet).
173 MUTEX_INIT(&PL_eval_mutex);
174 COND_INIT(&PL_eval_cond);
175 MUTEX_INIT(&PL_threads_mutex);
176 COND_INIT(&PL_nthreads_cond);
177 # ifdef EMULATE_ATOMIC_REFCOUNTS
178 MUTEX_INIT(&PL_svref_mutex);
179 # endif /* EMULATE_ATOMIC_REFCOUNTS */
181 MUTEX_INIT(&PL_cred_mutex);
182 MUTEX_INIT(&PL_sv_lock_mutex);
183 MUTEX_INIT(&PL_fdpid_mutex);
185 thr = init_main_thread();
186 #endif /* USE_THREADS */
188 #ifdef PERL_FLEXIBLE_EXCEPTIONS
189 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
192 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
194 PL_linestr = NEWSV(65,79);
195 sv_upgrade(PL_linestr,SVt_PVIV);
197 if (!SvREADONLY(&PL_sv_undef)) {
198 /* set read-only and try to insure than we wont see REFCNT==0
201 SvREADONLY_on(&PL_sv_undef);
202 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
204 sv_setpv(&PL_sv_no,PL_No);
206 SvREADONLY_on(&PL_sv_no);
207 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
209 sv_setpv(&PL_sv_yes,PL_Yes);
211 SvREADONLY_on(&PL_sv_yes);
212 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
217 /* PL_sighandlerp = sighandler; */
219 PL_sighandlerp = Perl_sighandler;
221 PL_pidstatus = newHV();
225 * There is no way we can refer to them from Perl so close them to save
226 * space. The other alternative would be to provide STDAUX and STDPRN
229 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
230 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
234 PL_nrs = newSVpvn("\n", 1);
235 PL_rs = SvREFCNT_inc(PL_nrs);
240 PL_lex_state = LEX_NOTPARSING;
246 SET_NUMERIC_STANDARD();
250 PL_patchlevel = NEWSV(0,4);
251 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
252 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
253 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
254 s = (U8*)SvPVX(PL_patchlevel);
255 /* Build version strings using "native" characters */
256 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
257 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
258 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
264 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
265 + ((NV)PERL_SUBVERSION / (NV)1000000)
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
273 #if defined(LOCAL_PATCH_COUNT)
274 PL_localpatches = local_patches; /* For possible -v */
277 #ifdef HAVE_INTERP_INTERN
281 PerlIO_init(); /* Hook to IO system */
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
285 PL_errors = newSVpvn("",0);
287 PL_regex_padav = newAV();
289 #ifdef USE_REENTRANT_API
290 New(31337, PL_reentrant_buffer,1, REBUF);
291 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
297 =for apidoc perl_destruct
299 Shuts down a Perl interpreter. See L<perlembed>.
307 int destruct_level; /* 0=none, 1=full, 2=full with checks */
312 #endif /* USE_THREADS */
314 /* wait for all pseudo-forked children to finish */
315 PERL_WAIT_FOR_CHILDREN;
319 /* Pass 1 on any remaining threads: detach joinables, join zombies */
321 MUTEX_LOCK(&PL_threads_mutex);
322 DEBUG_S(PerlIO_printf(Perl_debug_log,
323 "perl_destruct: waiting for %d threads...\n",
325 for (t = thr->next; t != thr; t = t->next) {
326 MUTEX_LOCK(&t->mutex);
327 switch (ThrSTATE(t)) {
330 DEBUG_S(PerlIO_printf(Perl_debug_log,
331 "perl_destruct: joining zombie %p\n", t));
332 ThrSETSTATE(t, THRf_DEAD);
333 MUTEX_UNLOCK(&t->mutex);
336 * The SvREFCNT_dec below may take a long time (e.g. av
337 * may contain an object scalar whose destructor gets
338 * called) so we have to unlock threads_mutex and start
341 MUTEX_UNLOCK(&PL_threads_mutex);
343 SvREFCNT_dec((SV*)av);
344 DEBUG_S(PerlIO_printf(Perl_debug_log,
345 "perl_destruct: joined zombie %p OK\n", t));
347 case THRf_R_JOINABLE:
348 DEBUG_S(PerlIO_printf(Perl_debug_log,
349 "perl_destruct: detaching thread %p\n", t));
350 ThrSETSTATE(t, THRf_R_DETACHED);
352 * We unlock threads_mutex and t->mutex in the opposite order
353 * from which we locked them just so that DETACH won't
354 * deadlock if it panics. It's only a breach of good style
355 * not a bug since they are unlocks not locks.
357 MUTEX_UNLOCK(&PL_threads_mutex);
359 MUTEX_UNLOCK(&t->mutex);
362 DEBUG_S(PerlIO_printf(Perl_debug_log,
363 "perl_destruct: ignoring %p (state %u)\n",
365 MUTEX_UNLOCK(&t->mutex);
366 /* fall through and out */
369 /* We leave the above "Pass 1" loop with threads_mutex still locked */
371 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
372 while (PL_nthreads > 1)
374 DEBUG_S(PerlIO_printf(Perl_debug_log,
375 "perl_destruct: final wait for %d threads\n",
377 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
379 /* At this point, we're the last thread */
380 MUTEX_UNLOCK(&PL_threads_mutex);
381 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
382 MUTEX_DESTROY(&PL_threads_mutex);
383 COND_DESTROY(&PL_nthreads_cond);
385 #endif /* !defined(FAKE_THREADS) */
386 #endif /* USE_THREADS */
388 destruct_level = PL_perl_destruct_level;
392 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
394 if (destruct_level < i)
405 if (PL_endav && !PL_minus_c)
406 call_list(PL_scopestack_ix, PL_endav);
412 /* We must account for everything. */
414 /* Destroy the main CV and syntax tree */
416 PL_curpad = AvARRAY(PL_comppad);
417 op_free(PL_main_root);
418 PL_main_root = Nullop;
420 PL_curcop = &PL_compiling;
421 PL_main_start = Nullop;
422 SvREFCNT_dec(PL_main_cv);
426 /* Tell PerlIO we are about to tear things apart in case
427 we have layers which are using resources that should
431 PerlIO_destruct(aTHX);
433 if (PL_sv_objcount) {
435 * Try to destruct global references. We do this first so that the
436 * destructors and destructees still exist. Some sv's might remain.
437 * Non-referenced objects are on their own.
442 /* unhook hooks which will soon be, or use, destroyed data */
443 SvREFCNT_dec(PL_warnhook);
444 PL_warnhook = Nullsv;
445 SvREFCNT_dec(PL_diehook);
448 /* call exit list functions */
449 while (PL_exitlistlen-- > 0)
450 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
452 Safefree(PL_exitlist);
454 if (destruct_level == 0){
456 DEBUG_P(debprofdump());
458 /* The exit() function will do everything that needs doing. */
462 /* jettison our possibly duplicated environment */
464 #ifdef USE_ENVIRON_ARRAY
465 if (environ != PL_origenviron) {
468 for (i = 0; environ[i]; i++)
469 safesysfree(environ[i]);
470 /* Must use safesysfree() when working with environ. */
471 safesysfree(environ);
473 environ = PL_origenviron;
478 /* the syntax tree is shared between clones
479 * so op_free(PL_main_root) only ReREFCNT_dec's
480 * REGEXPs in the parent interpreter
481 * we need to manually ReREFCNT_dec for the clones
484 I32 i = AvFILLp(PL_regex_padav) + 1;
485 SV **ary = AvARRAY(PL_regex_padav);
489 REGEXP *re = (REGEXP *)SvIVX(resv);
491 if (SvFLAGS(resv) & SVf_BREAK) {
492 /* this is PL_reg_curpm, already freed
493 * flag is set in regexec.c:S_regtry
495 SvFLAGS(resv) &= ~SVf_BREAK;
502 SvREFCNT_dec(PL_regex_padav);
503 PL_regex_padav = Nullav;
507 /* loosen bonds of global variables */
510 (void)PerlIO_close(PL_rsfp);
514 /* Filters for program text */
515 SvREFCNT_dec(PL_rsfp_filters);
516 PL_rsfp_filters = Nullav;
519 PL_preprocess = FALSE;
525 PL_doswitches = FALSE;
526 PL_dowarn = G_WARN_OFF;
527 PL_doextract = FALSE;
528 PL_sawampersand = FALSE; /* must save all match strings */
531 Safefree(PL_inplace);
533 SvREFCNT_dec(PL_patchlevel);
536 SvREFCNT_dec(PL_e_script);
537 PL_e_script = Nullsv;
540 while (--PL_origargc >= 0) {
541 Safefree(PL_origargv[PL_origargc]);
543 Safefree(PL_origargv);
545 /* magical thingies */
547 SvREFCNT_dec(PL_ofs_sv); /* $, */
550 SvREFCNT_dec(PL_ors_sv); /* $\ */
553 SvREFCNT_dec(PL_rs); /* $/ */
556 SvREFCNT_dec(PL_nrs); /* $/ helper */
559 PL_multiline = 0; /* $* */
560 Safefree(PL_osname); /* $^O */
563 SvREFCNT_dec(PL_statname);
564 PL_statname = Nullsv;
567 /* defgv, aka *_ should be taken care of elsewhere */
569 /* clean up after study() */
570 SvREFCNT_dec(PL_lastscream);
571 PL_lastscream = Nullsv;
572 Safefree(PL_screamfirst);
574 Safefree(PL_screamnext);
578 Safefree(PL_efloatbuf);
579 PL_efloatbuf = Nullch;
582 /* startup and shutdown function lists */
583 SvREFCNT_dec(PL_beginav);
584 SvREFCNT_dec(PL_endav);
585 SvREFCNT_dec(PL_checkav);
586 SvREFCNT_dec(PL_initav);
592 /* shortcuts just get cleared */
598 PL_argvoutgv = Nullgv;
600 PL_stderrgv = Nullgv;
601 PL_last_in_gv = Nullgv;
603 PL_debstash = Nullhv;
605 /* reset so print() ends up where we expect */
608 SvREFCNT_dec(PL_argvout_stack);
609 PL_argvout_stack = Nullav;
611 SvREFCNT_dec(PL_modglobal);
612 PL_modglobal = Nullhv;
613 SvREFCNT_dec(PL_preambleav);
614 PL_preambleav = Nullav;
615 SvREFCNT_dec(PL_subname);
617 SvREFCNT_dec(PL_linestr);
619 SvREFCNT_dec(PL_pidstatus);
620 PL_pidstatus = Nullhv;
621 SvREFCNT_dec(PL_toptarget);
622 PL_toptarget = Nullsv;
623 SvREFCNT_dec(PL_bodytarget);
624 PL_bodytarget = Nullsv;
625 PL_formtarget = Nullsv;
627 /* free locale stuff */
628 #ifdef USE_LOCALE_COLLATE
629 Safefree(PL_collation_name);
630 PL_collation_name = Nullch;
633 #ifdef USE_LOCALE_NUMERIC
634 Safefree(PL_numeric_name);
635 PL_numeric_name = Nullch;
636 SvREFCNT_dec(PL_numeric_radix_sv);
639 /* clear utf8 character classes */
640 SvREFCNT_dec(PL_utf8_alnum);
641 SvREFCNT_dec(PL_utf8_alnumc);
642 SvREFCNT_dec(PL_utf8_ascii);
643 SvREFCNT_dec(PL_utf8_alpha);
644 SvREFCNT_dec(PL_utf8_space);
645 SvREFCNT_dec(PL_utf8_cntrl);
646 SvREFCNT_dec(PL_utf8_graph);
647 SvREFCNT_dec(PL_utf8_digit);
648 SvREFCNT_dec(PL_utf8_upper);
649 SvREFCNT_dec(PL_utf8_lower);
650 SvREFCNT_dec(PL_utf8_print);
651 SvREFCNT_dec(PL_utf8_punct);
652 SvREFCNT_dec(PL_utf8_xdigit);
653 SvREFCNT_dec(PL_utf8_mark);
654 SvREFCNT_dec(PL_utf8_toupper);
655 SvREFCNT_dec(PL_utf8_tolower);
656 PL_utf8_alnum = Nullsv;
657 PL_utf8_alnumc = Nullsv;
658 PL_utf8_ascii = Nullsv;
659 PL_utf8_alpha = Nullsv;
660 PL_utf8_space = Nullsv;
661 PL_utf8_cntrl = Nullsv;
662 PL_utf8_graph = Nullsv;
663 PL_utf8_digit = Nullsv;
664 PL_utf8_upper = Nullsv;
665 PL_utf8_lower = Nullsv;
666 PL_utf8_print = Nullsv;
667 PL_utf8_punct = Nullsv;
668 PL_utf8_xdigit = Nullsv;
669 PL_utf8_mark = Nullsv;
670 PL_utf8_toupper = Nullsv;
671 PL_utf8_totitle = Nullsv;
672 PL_utf8_tolower = Nullsv;
674 if (!specialWARN(PL_compiling.cop_warnings))
675 SvREFCNT_dec(PL_compiling.cop_warnings);
676 PL_compiling.cop_warnings = Nullsv;
677 if (!specialCopIO(PL_compiling.cop_io))
678 SvREFCNT_dec(PL_compiling.cop_io);
679 PL_compiling.cop_io = Nullsv;
681 Safefree(CopFILE(&PL_compiling));
682 CopFILE(&PL_compiling) = Nullch;
683 Safefree(CopSTASHPV(&PL_compiling));
685 SvREFCNT_dec(CopFILEGV(&PL_compiling));
686 CopFILEGV(&PL_compiling) = Nullgv;
687 /* cop_stash is not refcounted */
690 /* Prepare to destruct main symbol table. */
695 SvREFCNT_dec(PL_curstname);
696 PL_curstname = Nullsv;
698 /* clear queued errors */
699 SvREFCNT_dec(PL_errors);
703 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
704 if (PL_scopestack_ix != 0)
705 Perl_warner(aTHX_ WARN_INTERNAL,
706 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
707 (long)PL_scopestack_ix);
708 if (PL_savestack_ix != 0)
709 Perl_warner(aTHX_ WARN_INTERNAL,
710 "Unbalanced saves: %ld more saves than restores\n",
711 (long)PL_savestack_ix);
712 if (PL_tmps_floor != -1)
713 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
714 (long)PL_tmps_floor + 1);
715 if (cxstack_ix != -1)
716 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
717 (long)cxstack_ix + 1);
720 /* Now absolutely destruct everything, somehow or other, loops or no. */
721 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
722 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
724 /* the 2 is for PL_fdpid and PL_strtab */
725 while (PL_sv_count > 2 && sv_clean_all())
728 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
729 SvFLAGS(PL_fdpid) |= SVt_PVAV;
730 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
731 SvFLAGS(PL_strtab) |= SVt_PVHV;
733 AvREAL_off(PL_fdpid); /* no surviving entries */
734 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
737 #ifdef HAVE_INTERP_INTERN
741 /* Destruct the global string table. */
743 /* Yell and reset the HeVAL() slots that are still holding refcounts,
744 * so that sv_free() won't fail on them.
752 max = HvMAX(PL_strtab);
753 array = HvARRAY(PL_strtab);
756 if (hent && ckWARN_d(WARN_INTERNAL)) {
757 Perl_warner(aTHX_ WARN_INTERNAL,
758 "Unbalanced string table refcount: (%d) for \"%s\"",
759 HeVAL(hent) - Nullsv, HeKEY(hent));
760 HeVAL(hent) = Nullsv;
770 SvREFCNT_dec(PL_strtab);
773 /* free the pointer table used for cloning */
774 ptr_table_free(PL_ptr_table);
777 /* free special SVs */
779 SvREFCNT(&PL_sv_yes) = 0;
780 sv_clear(&PL_sv_yes);
781 SvANY(&PL_sv_yes) = NULL;
782 SvFLAGS(&PL_sv_yes) = 0;
784 SvREFCNT(&PL_sv_no) = 0;
786 SvANY(&PL_sv_no) = NULL;
787 SvFLAGS(&PL_sv_no) = 0;
789 SvREFCNT(&PL_sv_undef) = 0;
790 SvREADONLY_off(&PL_sv_undef);
792 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
793 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
795 Safefree(PL_origfilename);
796 Safefree(PL_reg_start_tmp);
798 Safefree(PL_reg_curpm);
799 Safefree(PL_reg_poscache);
800 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
801 Safefree(PL_op_mask);
802 Safefree(PL_psig_ptr);
803 Safefree(PL_psig_name);
804 Safefree(PL_bitcount);
805 Safefree(PL_psig_pend);
807 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
809 DEBUG_P(debprofdump());
811 MUTEX_DESTROY(&PL_strtab_mutex);
812 MUTEX_DESTROY(&PL_sv_mutex);
813 MUTEX_DESTROY(&PL_eval_mutex);
814 MUTEX_DESTROY(&PL_cred_mutex);
815 MUTEX_DESTROY(&PL_fdpid_mutex);
816 COND_DESTROY(&PL_eval_cond);
817 #ifdef EMULATE_ATOMIC_REFCOUNTS
818 MUTEX_DESTROY(&PL_svref_mutex);
819 #endif /* EMULATE_ATOMIC_REFCOUNTS */
821 /* As the penultimate thing, free the non-arena SV for thrsv */
822 Safefree(SvPVX(PL_thrsv));
823 Safefree(SvANY(PL_thrsv));
826 #endif /* USE_THREADS */
828 #ifdef USE_REENTRANT_API
829 Safefree(PL_reentrant_buffer->tmbuff);
830 Safefree(PL_reentrant_buffer);
835 /* As the absolutely last thing, free the non-arena SV for mess() */
838 /* it could have accumulated taint magic */
839 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
842 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
843 moremagic = mg->mg_moremagic;
844 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
846 Safefree(mg->mg_ptr);
850 /* we know that type >= SVt_PV */
851 (void)SvOOK_off(PL_mess_sv);
852 Safefree(SvPVX(PL_mess_sv));
853 Safefree(SvANY(PL_mess_sv));
854 Safefree(PL_mess_sv);
860 =for apidoc perl_free
862 Releases a Perl interpreter. See L<perlembed>.
870 #if defined(PERL_OBJECT)
873 # if defined(WIN32) || defined(NETWARE)
874 # if defined(PERL_IMPLICIT_SYS)
876 void *host = nw_internal_host;
878 void *host = w32_internal_host;
881 if (PerlProc_lasthost()) {
887 nw5_delete_internal_host(host);
889 win32_delete_internal_host(host);
902 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
904 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
905 PL_exitlist[PL_exitlistlen].fn = fn;
906 PL_exitlist[PL_exitlistlen].ptr = ptr;
911 =for apidoc perl_parse
913 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
919 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
928 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
931 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
932 setuid perl scripts securely.\n");
936 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
937 _dyld_lookup_and_bind
938 ("__environ", (unsigned long *) &environ_pointer, NULL);
943 /* we copy rather than point to argv
944 * since perl_clone will copy and perl_destruct
945 * has no way of knowing if we've made a copy or
949 New(0, PL_origargv, i+1, char*);
950 PL_origargv[i] = '\0';
952 PL_origargv[i] = savepv(argv[i]);
956 #ifdef USE_ENVIRON_ARRAY
957 PL_origenviron = environ;
962 /* Come here if running an undumped a.out. */
964 PL_origfilename = savepv(argv[0]);
965 PL_do_undump = FALSE;
966 cxstack_ix = -1; /* start label stack again */
968 init_postdump_symbols(argc,argv,env);
973 PL_curpad = AvARRAY(PL_comppad);
974 op_free(PL_main_root);
975 PL_main_root = Nullop;
977 PL_main_start = Nullop;
978 SvREFCNT_dec(PL_main_cv);
982 oldscope = PL_scopestack_ix;
983 PL_dowarn = G_WARN_OFF;
985 #ifdef PERL_FLEXIBLE_EXCEPTIONS
986 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
992 #ifndef PERL_FLEXIBLE_EXCEPTIONS
993 parse_body(env,xsinit);
996 call_list(oldscope, PL_checkav);
1003 /* my_exit() was called */
1004 while (PL_scopestack_ix > oldscope)
1007 PL_curstash = PL_defstash;
1009 call_list(oldscope, PL_checkav);
1010 ret = STATUS_NATIVE_EXPORT;
1013 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1021 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1023 S_vparse_body(pTHX_ va_list args)
1025 char **env = va_arg(args, char**);
1026 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1028 return parse_body(env, xsinit);
1033 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1035 int argc = PL_origargc;
1036 char **argv = PL_origargv;
1037 char *scriptname = NULL;
1039 VOL bool dosearch = FALSE;
1040 char *validarg = "";
1044 char *popts, *cddir = Nullch;
1046 sv_setpvn(PL_linestr,"",0);
1047 sv = newSVpvn("",0); /* first used for -I flags */
1051 for (argc--,argv++; argc > 0; argc--,argv++) {
1052 if (argv[0][0] != '-' || !argv[0][1])
1056 validarg = " PHOOEY ";
1065 win32_argv2utf8(argc-1, argv+1);
1068 #ifndef PERL_STRICT_CR
1092 if ((s = moreswitches(s)))
1102 #ifdef MACOS_TRADITIONAL
1103 /* ignore -e for Dev:Pseudo argument */
1104 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1107 if (PL_euid != PL_uid || PL_egid != PL_gid)
1108 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1110 PL_e_script = newSVpvn("",0);
1111 filter_add(read_e_script, NULL);
1114 sv_catpv(PL_e_script, s);
1116 sv_catpv(PL_e_script, argv[1]);
1120 Perl_croak(aTHX_ "No code specified for -e");
1121 sv_catpv(PL_e_script, "\n");
1124 case 'I': /* -I handled both here and in moreswitches() */
1126 if (!*++s && (s=argv[1]) != Nullch) {
1131 STRLEN len = strlen(s);
1132 p = savepvn(s, len);
1133 incpush(p, TRUE, TRUE);
1134 sv_catpvn(sv, "-I", 2);
1135 sv_catpvn(sv, p, len);
1136 sv_catpvn(sv, " ", 1);
1140 Perl_croak(aTHX_ "No directory specified for -I");
1144 PL_preprocess = TRUE;
1154 PL_preambleav = newAV();
1155 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1157 PL_Sv = newSVpv("print myconfig();",0);
1159 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1161 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1163 sv_catpv(PL_Sv,"\" Compile-time options:");
1165 sv_catpv(PL_Sv," DEBUGGING");
1167 # ifdef MULTIPLICITY
1168 sv_catpv(PL_Sv," MULTIPLICITY");
1171 sv_catpv(PL_Sv," USE_THREADS");
1173 # ifdef USE_ITHREADS
1174 sv_catpv(PL_Sv," USE_ITHREADS");
1176 # ifdef USE_64_BIT_INT
1177 sv_catpv(PL_Sv," USE_64_BIT_INT");
1179 # ifdef USE_64_BIT_ALL
1180 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1182 # ifdef USE_LONG_DOUBLE
1183 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1185 # ifdef USE_LARGE_FILES
1186 sv_catpv(PL_Sv," USE_LARGE_FILES");
1189 sv_catpv(PL_Sv," USE_SOCKS");
1192 sv_catpv(PL_Sv," PERL_OBJECT");
1194 # ifdef PERL_IMPLICIT_CONTEXT
1195 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1197 # ifdef PERL_IMPLICIT_SYS
1198 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1200 sv_catpv(PL_Sv,"\\n\",");
1202 #if defined(LOCAL_PATCH_COUNT)
1203 if (LOCAL_PATCH_COUNT > 0) {
1205 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1206 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1207 if (PL_localpatches[i])
1208 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1212 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1215 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1217 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1220 sv_catpv(PL_Sv, "; \
1222 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1225 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1228 print \" \\%ENV:\\n @env\\n\" if @env; \
1229 print \" \\@INC:\\n @INC\\n\";");
1232 PL_Sv = newSVpv("config_vars(qw(",0);
1233 sv_catpv(PL_Sv, ++s);
1234 sv_catpv(PL_Sv, "))");
1237 av_push(PL_preambleav, PL_Sv);
1238 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1241 PL_doextract = TRUE;
1249 if (!*++s || isSPACE(*s)) {
1253 /* catch use of gnu style long options */
1254 if (strEQ(s, "version")) {
1258 if (strEQ(s, "help")) {
1265 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1271 #ifndef SECURE_INTERNAL_GETENV
1274 (popts = PerlEnv_getenv("PERL5OPT")))
1279 if (*s == '-' && *(s+1) == 'T')
1294 if (!strchr("DIMUdmw", *s))
1295 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1308 scriptname = argv[0];
1311 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1313 else if (scriptname == Nullch) {
1315 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1323 open_script(scriptname,dosearch,sv,&fdscript);
1325 validate_suid(validarg, scriptname,fdscript);
1328 #if defined(SIGCHLD) || defined(SIGCLD)
1331 # define SIGCHLD SIGCLD
1333 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1334 if (sigstate == SIG_IGN) {
1335 if (ckWARN(WARN_SIGNAL))
1336 Perl_warner(aTHX_ WARN_SIGNAL,
1337 "Can't ignore signal CHLD, forcing to default");
1338 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1344 #ifdef MACOS_TRADITIONAL
1345 if (PL_doextract || gMacPerl_AlwaysExtract) {
1350 if (cddir && PerlDir_chdir(cddir) < 0)
1351 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1355 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1356 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1357 CvUNIQUE_on(PL_compcv);
1359 PL_comppad = newAV();
1360 av_push(PL_comppad, Nullsv);
1361 PL_curpad = AvARRAY(PL_comppad);
1362 PL_comppad_name = newAV();
1363 PL_comppad_name_fill = 0;
1364 PL_min_intro_pending = 0;
1367 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1368 PL_curpad[0] = (SV*)newAV();
1369 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1370 CvOWNER(PL_compcv) = 0;
1371 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1372 MUTEX_INIT(CvMUTEXP(PL_compcv));
1373 #endif /* USE_THREADS */
1375 comppadlist = newAV();
1376 AvREAL_off(comppadlist);
1377 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1378 av_store(comppadlist, 1, (SV*)PL_comppad);
1379 CvPADLIST(PL_compcv) = comppadlist;
1382 boot_core_UNIVERSAL();
1384 boot_core_xsutils();
1388 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1390 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1396 # ifdef HAS_SOCKS5_INIT
1397 socks5_init(argv[0]);
1403 init_predump_symbols();
1404 /* init_postdump_symbols not currently designed to be called */
1405 /* more than once (ENV isn't cleared first, for example) */
1406 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1408 init_postdump_symbols(argc,argv,env);
1412 /* now parse the script */
1414 SETERRNO(0,SS$_NORMAL);
1416 #ifdef MACOS_TRADITIONAL
1417 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1419 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1421 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1422 MacPerl_MPWFileName(PL_origfilename));
1426 if (yyparse() || PL_error_count) {
1428 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1430 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1435 CopLINE_set(PL_curcop, 0);
1436 PL_curstash = PL_defstash;
1437 PL_preprocess = FALSE;
1439 SvREFCNT_dec(PL_e_script);
1440 PL_e_script = Nullsv;
1443 /* now that script is parsed, we can modify record separator */
1444 SvREFCNT_dec(PL_rs);
1445 PL_rs = SvREFCNT_inc(PL_nrs);
1446 sv_setsv(get_sv("/", TRUE), PL_rs);
1451 SAVECOPFILE(PL_curcop);
1452 SAVECOPLINE(PL_curcop);
1453 gv_check(PL_defstash);
1460 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1461 dump_mstats("after compilation:");
1470 =for apidoc perl_run
1472 Tells a Perl interpreter to run. See L<perlembed>.
1487 oldscope = PL_scopestack_ix;
1489 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1491 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1497 cxstack_ix = -1; /* start context stack again */
1499 case 0: /* normal completion */
1500 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1505 case 2: /* my_exit() */
1506 while (PL_scopestack_ix > oldscope)
1509 PL_curstash = PL_defstash;
1511 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1512 dump_mstats("after execution: ");
1514 ret = STATUS_NATIVE_EXPORT;
1518 POPSTACK_TO(PL_mainstack);
1521 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1531 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1533 S_vrun_body(pTHX_ va_list args)
1535 I32 oldscope = va_arg(args, I32);
1537 return run_body(oldscope);
1543 S_run_body(pTHX_ I32 oldscope)
1545 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1546 PL_sawampersand ? "Enabling" : "Omitting"));
1548 if (!PL_restartop) {
1549 DEBUG_x(dump_all());
1550 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1551 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1555 #ifdef MACOS_TRADITIONAL
1556 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1558 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1562 if (PERLDB_SINGLE && PL_DBsingle)
1563 sv_setiv(PL_DBsingle, 1);
1565 call_list(oldscope, PL_initav);
1571 PL_op = PL_restartop;
1575 else if (PL_main_start) {
1576 CvDEPTH(PL_main_cv) = 1;
1577 PL_op = PL_main_start;
1587 =for apidoc p||get_sv
1589 Returns the SV of the specified Perl scalar. If C<create> is set and the
1590 Perl variable does not exist then it will be created. If C<create> is not
1591 set and the variable does not exist then NULL is returned.
1597 Perl_get_sv(pTHX_ const char *name, I32 create)
1601 if (name[1] == '\0' && !isALPHA(name[0])) {
1602 PADOFFSET tmp = find_threadsv(name);
1603 if (tmp != NOT_IN_PAD)
1604 return THREADSV(tmp);
1606 #endif /* USE_THREADS */
1607 gv = gv_fetchpv(name, create, SVt_PV);
1614 =for apidoc p||get_av
1616 Returns the AV of the specified Perl array. If C<create> is set and the
1617 Perl variable does not exist then it will be created. If C<create> is not
1618 set and the variable does not exist then NULL is returned.
1624 Perl_get_av(pTHX_ const char *name, I32 create)
1626 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1635 =for apidoc p||get_hv
1637 Returns the HV of the specified Perl hash. If C<create> is set and the
1638 Perl variable does not exist then it will be created. If C<create> is not
1639 set and the variable does not exist then NULL is returned.
1645 Perl_get_hv(pTHX_ const char *name, I32 create)
1647 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1656 =for apidoc p||get_cv
1658 Returns the CV of the specified Perl subroutine. If C<create> is set and
1659 the Perl subroutine does not exist then it will be declared (which has the
1660 same effect as saying C<sub name;>). If C<create> is not set and the
1661 subroutine does not exist then NULL is returned.
1667 Perl_get_cv(pTHX_ const char *name, I32 create)
1669 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1670 /* XXX unsafe for threads if eval_owner isn't held */
1671 /* XXX this is probably not what they think they're getting.
1672 * It has the same effect as "sub name;", i.e. just a forward
1674 if (create && !GvCVu(gv))
1675 return newSUB(start_subparse(FALSE, 0),
1676 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1684 /* Be sure to refetch the stack pointer after calling these routines. */
1687 =for apidoc p||call_argv
1689 Performs a callback to the specified Perl sub. See L<perlcall>.
1695 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1697 /* See G_* flags in cop.h */
1698 /* null terminated arg list */
1705 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1710 return call_pv(sub_name, flags);
1714 =for apidoc p||call_pv
1716 Performs a callback to the specified Perl sub. See L<perlcall>.
1722 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1723 /* name of the subroutine */
1724 /* See G_* flags in cop.h */
1726 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1730 =for apidoc p||call_method
1732 Performs a callback to the specified Perl method. The blessed object must
1733 be on the stack. See L<perlcall>.
1739 Perl_call_method(pTHX_ const char *methname, I32 flags)
1740 /* name of the subroutine */
1741 /* See G_* flags in cop.h */
1743 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1746 /* May be called with any of a CV, a GV, or an SV containing the name. */
1748 =for apidoc p||call_sv
1750 Performs a callback to the Perl sub whose name is in the SV. See
1757 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1758 /* See G_* flags in cop.h */
1761 LOGOP myop; /* fake syntax tree node */
1764 volatile I32 retval = 0;
1766 bool oldcatch = CATCH_GET;
1771 if (flags & G_DISCARD) {
1776 Zero(&myop, 1, LOGOP);
1777 myop.op_next = Nullop;
1778 if (!(flags & G_NOARGS))
1779 myop.op_flags |= OPf_STACKED;
1780 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1781 (flags & G_ARRAY) ? OPf_WANT_LIST :
1786 EXTEND(PL_stack_sp, 1);
1787 *++PL_stack_sp = sv;
1789 oldscope = PL_scopestack_ix;
1791 if (PERLDB_SUB && PL_curstash != PL_debstash
1792 /* Handle first BEGIN of -d. */
1793 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1794 /* Try harder, since this may have been a sighandler, thus
1795 * curstash may be meaningless. */
1796 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1797 && !(flags & G_NODEBUG))
1798 PL_op->op_private |= OPpENTERSUB_DB;
1800 if (flags & G_METHOD) {
1801 Zero(&method_op, 1, UNOP);
1802 method_op.op_next = PL_op;
1803 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1804 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1805 PL_op = (OP*)&method_op;
1808 if (!(flags & G_EVAL)) {
1810 call_body((OP*)&myop, FALSE);
1811 retval = PL_stack_sp - (PL_stack_base + oldmark);
1812 CATCH_SET(oldcatch);
1815 myop.op_other = (OP*)&myop;
1817 /* we're trying to emulate pp_entertry() here */
1819 register PERL_CONTEXT *cx;
1820 I32 gimme = GIMME_V;
1825 push_return(Nullop);
1826 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1828 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1830 PL_in_eval = EVAL_INEVAL;
1831 if (flags & G_KEEPERR)
1832 PL_in_eval |= EVAL_KEEPERR;
1838 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1840 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1847 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1849 call_body((OP*)&myop, FALSE);
1851 retval = PL_stack_sp - (PL_stack_base + oldmark);
1852 if (!(flags & G_KEEPERR))
1859 /* my_exit() was called */
1860 PL_curstash = PL_defstash;
1863 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1864 Perl_croak(aTHX_ "Callback called exit");
1869 PL_op = PL_restartop;
1873 PL_stack_sp = PL_stack_base + oldmark;
1874 if (flags & G_ARRAY)
1878 *++PL_stack_sp = &PL_sv_undef;
1883 if (PL_scopestack_ix > oldscope) {
1887 register PERL_CONTEXT *cx;
1899 if (flags & G_DISCARD) {
1900 PL_stack_sp = PL_stack_base + oldmark;
1909 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1911 S_vcall_body(pTHX_ va_list args)
1913 OP *myop = va_arg(args, OP*);
1914 int is_eval = va_arg(args, int);
1916 call_body(myop, is_eval);
1922 S_call_body(pTHX_ OP *myop, int is_eval)
1924 if (PL_op == myop) {
1926 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1928 PL_op = Perl_pp_entersub(aTHX); /* this does */
1934 /* Eval a string. The G_EVAL flag is always assumed. */
1937 =for apidoc p||eval_sv
1939 Tells Perl to C<eval> the string in the SV.
1945 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1947 /* See G_* flags in cop.h */
1950 UNOP myop; /* fake syntax tree node */
1951 volatile I32 oldmark = SP - PL_stack_base;
1952 volatile I32 retval = 0;
1958 if (flags & G_DISCARD) {
1965 Zero(PL_op, 1, UNOP);
1966 EXTEND(PL_stack_sp, 1);
1967 *++PL_stack_sp = sv;
1968 oldscope = PL_scopestack_ix;
1970 if (!(flags & G_NOARGS))
1971 myop.op_flags = OPf_STACKED;
1972 myop.op_next = Nullop;
1973 myop.op_type = OP_ENTEREVAL;
1974 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1975 (flags & G_ARRAY) ? OPf_WANT_LIST :
1977 if (flags & G_KEEPERR)
1978 myop.op_flags |= OPf_SPECIAL;
1980 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1982 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1989 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1991 call_body((OP*)&myop,TRUE);
1993 retval = PL_stack_sp - (PL_stack_base + oldmark);
1994 if (!(flags & G_KEEPERR))
2001 /* my_exit() was called */
2002 PL_curstash = PL_defstash;
2005 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2006 Perl_croak(aTHX_ "Callback called exit");
2011 PL_op = PL_restartop;
2015 PL_stack_sp = PL_stack_base + oldmark;
2016 if (flags & G_ARRAY)
2020 *++PL_stack_sp = &PL_sv_undef;
2026 if (flags & G_DISCARD) {
2027 PL_stack_sp = PL_stack_base + oldmark;
2037 =for apidoc p||eval_pv
2039 Tells Perl to C<eval> the given string and return an SV* result.
2045 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2048 SV* sv = newSVpv(p, 0);
2050 eval_sv(sv, G_SCALAR);
2057 if (croak_on_error && SvTRUE(ERRSV)) {
2059 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2065 /* Require a module. */
2068 =for apidoc p||require_pv
2070 Tells Perl to C<require> the file named by the string argument. It is
2071 analogous to the Perl code C<eval "require '$file'">. It's even
2072 implemented that way; consider using Perl_load_module instead.
2077 Perl_require_pv(pTHX_ const char *pv)
2081 PUSHSTACKi(PERLSI_REQUIRE);
2083 sv = sv_newmortal();
2084 sv_setpv(sv, "require '");
2087 eval_sv(sv, G_DISCARD);
2093 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2097 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2098 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2102 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2104 /* This message really ought to be max 23 lines.
2105 * Removed -h because the user already knows that option. Others? */
2107 static char *usage_msg[] = {
2108 "-0[octal] specify record separator (\\0, if no argument)",
2109 "-a autosplit mode with -n or -p (splits $_ into @F)",
2110 "-C enable native wide character system interfaces",
2111 "-c check syntax only (runs BEGIN and CHECK blocks)",
2112 "-d[:debugger] run program under debugger",
2113 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2114 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2115 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2116 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2117 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2118 "-l[octal] enable line ending processing, specifies line terminator",
2119 "-[mM][-]module execute `use/no module...' before executing program",
2120 "-n assume 'while (<>) { ... }' loop around program",
2121 "-p assume loop like -n but print line also, like sed",
2122 "-P run program through C preprocessor before compilation",
2123 "-s enable rudimentary parsing for switches after programfile",
2124 "-S look for programfile using PATH environment variable",
2125 "-T enable tainting checks",
2126 "-u dump core after parsing program",
2127 "-U allow unsafe operations",
2128 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2129 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2130 "-w enable many useful warnings (RECOMMENDED)",
2131 "-W enable all warnings",
2132 "-X disable all warnings",
2133 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2137 char **p = usage_msg;
2139 PerlIO_printf(PerlIO_stdout(),
2140 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2143 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2146 /* This routine handles any switches that can be given during run */
2149 Perl_moreswitches(pTHX_ char *s)
2157 numlen = 0; /* disallow underscores */
2158 rschar = (U32)scan_oct(s, 4, &numlen);
2159 SvREFCNT_dec(PL_nrs);
2160 if (rschar & ~((U8)~0))
2161 PL_nrs = &PL_sv_undef;
2162 else if (!rschar && numlen >= 2)
2163 PL_nrs = newSVpvn("", 0);
2166 PL_nrs = newSVpvn(&ch, 1);
2171 PL_widesyscalls = TRUE;
2176 PL_splitstr = savepv(s + 1);
2190 /* The following permits -d:Mod to accepts arguments following an =
2191 in the fashion that -MSome::Mod does. */
2192 if (*s == ':' || *s == '=') {
2195 sv = newSVpv("use Devel::", 0);
2197 /* We now allow -d:Module=Foo,Bar */
2198 while(isALNUM(*s) || *s==':') ++s;
2200 sv_catpv(sv, start);
2202 sv_catpvn(sv, start, s-start);
2203 sv_catpv(sv, " split(/,/,q{");
2208 my_setenv("PERL5DB", SvPV(sv, PL_na));
2211 PL_perldb = PERLDB_ALL;
2219 if (isALPHA(s[1])) {
2220 /* if adding extra options, remember to update DEBUG_MASK */
2221 static char debopts[] = "psltocPmfrxuLHXDSTR";
2224 for (s++; *s && (d = strchr(debopts,*s)); s++)
2225 PL_debug |= 1 << (d - debopts);
2228 PL_debug = atoi(s+1);
2229 for (s++; isDIGIT(*s); s++) ;
2231 PL_debug |= DEBUG_TOP_FLAG;
2233 if (ckWARN_d(WARN_DEBUGGING))
2234 Perl_warner(aTHX_ WARN_DEBUGGING,
2235 "Recompile perl with -DDEBUGGING to use -D switch\n");
2236 for (s++; isALNUM(*s); s++) ;
2242 usage(PL_origargv[0]);
2246 Safefree(PL_inplace);
2247 PL_inplace = savepv(s+1);
2249 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2252 if (*s == '-') /* Additional switches on #! line. */
2256 case 'I': /* -I handled both here and in parse_perl() */
2259 while (*s && isSPACE(*s))
2264 /* ignore trailing spaces (possibly followed by other switches) */
2266 for (e = p; *e && !isSPACE(*e); e++) ;
2270 } while (*p && *p != '-');
2271 e = savepvn(s, e-s);
2272 incpush(e, TRUE, TRUE);
2279 Perl_croak(aTHX_ "No directory specified for -I");
2285 SvREFCNT_dec(PL_ors_sv);
2289 PL_ors_sv = newSVpvn("\n",1);
2290 numlen = 0; /* disallow underscores */
2291 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2295 if (RsPARA(PL_nrs)) {
2296 PL_ors_sv = newSVpvn("\n\n",2);
2299 PL_ors_sv = newSVsv(PL_nrs);
2304 forbid_setid("-M"); /* XXX ? */
2307 forbid_setid("-m"); /* XXX ? */
2312 /* -M-foo == 'no foo' */
2313 if (*s == '-') { use = "no "; ++s; }
2314 sv = newSVpv(use,0);
2316 /* We allow -M'Module qw(Foo Bar)' */
2317 while(isALNUM(*s) || *s==':') ++s;
2319 sv_catpv(sv, start);
2320 if (*(start-1) == 'm') {
2322 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2323 sv_catpv( sv, " ()");
2327 Perl_croak(aTHX_ "Module name required with -%c option",
2329 sv_catpvn(sv, start, s-start);
2330 sv_catpv(sv, " split(/,/,q{");
2336 PL_preambleav = newAV();
2337 av_push(PL_preambleav, sv);
2340 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2352 PL_doswitches = TRUE;
2357 Perl_croak(aTHX_ "Too late for \"-T\" option");
2361 #ifdef MACOS_TRADITIONAL
2362 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2364 PL_do_undump = TRUE;
2373 PerlIO_printf(PerlIO_stdout(),
2374 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2375 PL_patchlevel, ARCHNAME));
2377 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2378 PerlIO_printf(PerlIO_stdout(),
2379 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2380 PerlIO_printf(PerlIO_stdout(),
2381 Perl_form(aTHX_ " built under %s at %s %s\n",
2382 OSNAME, __DATE__, __TIME__));
2383 PerlIO_printf(PerlIO_stdout(),
2384 Perl_form(aTHX_ " OS Specific Release: %s\n",
2388 #if defined(LOCAL_PATCH_COUNT)
2389 if (LOCAL_PATCH_COUNT > 0)
2390 PerlIO_printf(PerlIO_stdout(),
2391 "\n(with %d registered patch%s, "
2392 "see perl -V for more detail)",
2393 (int)LOCAL_PATCH_COUNT,
2394 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2397 PerlIO_printf(PerlIO_stdout(),
2398 "\n\nCopyright 1987-2001, Larry Wall\n");
2399 #ifdef MACOS_TRADITIONAL
2400 PerlIO_printf(PerlIO_stdout(),
2401 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2404 PerlIO_printf(PerlIO_stdout(),
2405 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2408 PerlIO_printf(PerlIO_stdout(),
2409 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2410 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2413 PerlIO_printf(PerlIO_stdout(),
2414 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2415 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2418 PerlIO_printf(PerlIO_stdout(),
2419 "atariST series port, ++jrb bammi@cadence.com\n");
2422 PerlIO_printf(PerlIO_stdout(),
2423 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2426 PerlIO_printf(PerlIO_stdout(),
2427 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2430 PerlIO_printf(PerlIO_stdout(),
2431 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2434 PerlIO_printf(PerlIO_stdout(),
2435 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2438 PerlIO_printf(PerlIO_stdout(),
2439 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2442 PerlIO_printf(PerlIO_stdout(),
2443 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2446 PerlIO_printf(PerlIO_stdout(),
2447 "MiNT port by Guido Flohr, 1997-1999\n");
2450 PerlIO_printf(PerlIO_stdout(),
2451 "EPOC port by Olaf Flebbe, 1999-2000\n");
2454 printf("WINCE port by Rainer Keuchel, 2001\n");
2455 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2458 #ifdef BINARY_BUILD_NOTICE
2459 BINARY_BUILD_NOTICE;
2461 PerlIO_printf(PerlIO_stdout(),
2463 Perl may be copied only under the terms of either the Artistic License or the\n\
2464 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2465 Complete documentation for Perl, including FAQ lists, should be found on\n\
2466 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2467 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2470 if (! (PL_dowarn & G_WARN_ALL_MASK))
2471 PL_dowarn |= G_WARN_ON;
2475 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2476 PL_compiling.cop_warnings = pWARN_ALL ;
2480 PL_dowarn = G_WARN_ALL_OFF;
2481 PL_compiling.cop_warnings = pWARN_NONE ;
2486 if (s[1] == '-') /* Additional switches on #! line. */
2491 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2497 #ifdef ALTERNATE_SHEBANG
2498 case 'S': /* OS/2 needs -S on "extproc" line. */
2506 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2511 /* compliments of Tom Christiansen */
2513 /* unexec() can be found in the Gnu emacs distribution */
2514 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2517 Perl_my_unexec(pTHX)
2525 prog = newSVpv(BIN_EXP, 0);
2526 sv_catpv(prog, "/perl");
2527 file = newSVpv(PL_origfilename, 0);
2528 sv_catpv(file, ".perldump");
2530 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2531 /* unexec prints msg to stderr in case of failure */
2532 PerlProc_exit(status);
2535 # include <lib$routines.h>
2536 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2538 ABORT(); /* for use with undump */
2543 /* initialize curinterp */
2548 #ifdef PERL_OBJECT /* XXX kludge */
2551 PL_chopset = " \n-"; \
2552 PL_copline = NOLINE; \
2553 PL_curcop = &PL_compiling;\
2554 PL_curcopdb = NULL; \
2556 PL_dumpindent = 4; \
2557 PL_laststatval = -1; \
2558 PL_laststype = OP_STAT; \
2559 PL_maxscream = -1; \
2560 PL_maxsysfd = MAXSYSFD; \
2561 PL_statname = Nullsv; \
2562 PL_tmps_floor = -1; \
2564 PL_op_mask = NULL; \
2565 PL_laststatval = -1; \
2566 PL_laststype = OP_STAT; \
2567 PL_mess_sv = Nullsv; \
2568 PL_splitstr = " "; \
2569 PL_generation = 100; \
2570 PL_exitlist = NULL; \
2571 PL_exitlistlen = 0; \
2573 PL_in_clean_objs = FALSE; \
2574 PL_in_clean_all = FALSE; \
2575 PL_profiledata = NULL; \
2577 PL_rsfp_filters = Nullav; \
2582 # ifdef MULTIPLICITY
2583 # define PERLVAR(var,type)
2584 # define PERLVARA(var,n,type)
2585 # if defined(PERL_IMPLICIT_CONTEXT)
2586 # if defined(USE_THREADS)
2587 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2588 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2589 # else /* !USE_THREADS */
2590 # define PERLVARI(var,type,init) aTHX->var = init;
2591 # define PERLVARIC(var,type,init) aTHX->var = init;
2592 # endif /* USE_THREADS */
2594 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2595 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2597 # include "intrpvar.h"
2598 # ifndef USE_THREADS
2599 # include "thrdvar.h"
2606 # define PERLVAR(var,type)
2607 # define PERLVARA(var,n,type)
2608 # define PERLVARI(var,type,init) PL_##var = init;
2609 # define PERLVARIC(var,type,init) PL_##var = init;
2610 # include "intrpvar.h"
2611 # ifndef USE_THREADS
2612 # include "thrdvar.h"
2624 S_init_main_stash(pTHX)
2628 /* Note that strtab is a rather special HV. Assumptions are made
2629 about not iterating on it, and not adding tie magic to it.
2630 It is properly deallocated in perl_destruct() */
2631 PL_strtab = newHV();
2633 MUTEX_INIT(&PL_strtab_mutex);
2635 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2636 hv_ksplit(PL_strtab, 512);
2638 PL_curstash = PL_defstash = newHV();
2639 PL_curstname = newSVpvn("main",4);
2640 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2641 SvREFCNT_dec(GvHV(gv));
2642 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2644 HvNAME(PL_defstash) = savepv("main");
2645 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2646 GvMULTI_on(PL_incgv);
2647 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2648 GvMULTI_on(PL_hintgv);
2649 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2650 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2651 GvMULTI_on(PL_errgv);
2652 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2653 GvMULTI_on(PL_replgv);
2654 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2655 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2656 sv_setpvn(ERRSV, "", 0);
2657 PL_curstash = PL_defstash;
2658 CopSTASH_set(&PL_compiling, PL_defstash);
2659 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2660 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2661 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2662 /* We must init $/ before switches are processed. */
2663 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2667 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2672 PL_origfilename = savepv("-e");
2675 /* if find_script() returns, it returns a malloc()-ed value */
2676 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2678 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2679 char *s = scriptname + 8;
2680 *fdscript = atoi(s);
2684 scriptname = savepv(s + 1);
2685 Safefree(PL_origfilename);
2686 PL_origfilename = scriptname;
2692 Safefree(CopFILE(PL_curcop));
2694 SvREFCNT_dec(CopFILEGV(PL_curcop));
2696 CopFILE_set(PL_curcop, PL_origfilename);
2697 if (strEQ(PL_origfilename,"-"))
2699 if (*fdscript >= 0) {
2700 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2701 #if defined(HAS_FCNTL) && defined(F_SETFD)
2703 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2706 else if (PL_preprocess) {
2707 char *cpp_cfg = CPPSTDIN;
2708 SV *cpp = newSVpvn("",0);
2709 SV *cmd = NEWSV(0,0);
2711 if (strEQ(cpp_cfg, "cppstdin"))
2712 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2713 sv_catpv(cpp, cpp_cfg);
2715 sv_catpvn(sv, "-I", 2);
2716 sv_catpv(sv,PRIVLIB_EXP);
2718 DEBUG_P(PerlIO_printf(Perl_debug_log,
2719 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2720 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2721 #if defined(MSDOS) || defined(WIN32)
2722 Perl_sv_setpvf(aTHX_ cmd, "\
2723 sed %s -e \"/^[^#]/b\" \
2724 -e \"/^#[ ]*include[ ]/b\" \
2725 -e \"/^#[ ]*define[ ]/b\" \
2726 -e \"/^#[ ]*if[ ]/b\" \
2727 -e \"/^#[ ]*ifdef[ ]/b\" \
2728 -e \"/^#[ ]*ifndef[ ]/b\" \
2729 -e \"/^#[ ]*else/b\" \
2730 -e \"/^#[ ]*elif[ ]/b\" \
2731 -e \"/^#[ ]*undef[ ]/b\" \
2732 -e \"/^#[ ]*endif/b\" \
2734 %s | %"SVf" -C %"SVf" %s",
2735 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2738 Perl_sv_setpvf(aTHX_ cmd, "\
2739 %s %s -e '/^[^#]/b' \
2740 -e '/^#[ ]*include[ ]/b' \
2741 -e '/^#[ ]*define[ ]/b' \
2742 -e '/^#[ ]*if[ ]/b' \
2743 -e '/^#[ ]*ifdef[ ]/b' \
2744 -e '/^#[ ]*ifndef[ ]/b' \
2745 -e '/^#[ ]*else/b' \
2746 -e '/^#[ ]*elif[ ]/b' \
2747 -e '/^#[ ]*undef[ ]/b' \
2748 -e '/^#[ ]*endif/b' \
2750 %s | %"SVf" %"SVf" %s",
2752 Perl_sv_setpvf(aTHX_ cmd, "\
2753 %s %s -e '/^[^#]/b' \
2754 -e '/^#[ ]*include[ ]/b' \
2755 -e '/^#[ ]*define[ ]/b' \
2756 -e '/^#[ ]*if[ ]/b' \
2757 -e '/^#[ ]*ifdef[ ]/b' \
2758 -e '/^#[ ]*ifndef[ ]/b' \
2759 -e '/^#[ ]*else/b' \
2760 -e '/^#[ ]*elif[ ]/b' \
2761 -e '/^#[ ]*undef[ ]/b' \
2762 -e '/^#[ ]*endif/b' \
2764 %s | %"SVf" -C %"SVf" %s",
2771 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2773 scriptname, cpp, sv, CPPMINUS);
2774 PL_doextract = FALSE;
2775 #ifdef IAMSUID /* actually, this is caught earlier */
2776 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2778 (void)seteuid(PL_uid); /* musn't stay setuid root */
2781 (void)setreuid((Uid_t)-1, PL_uid);
2783 #ifdef HAS_SETRESUID
2784 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2786 PerlProc_setuid(PL_uid);
2790 if (PerlProc_geteuid() != PL_uid)
2791 Perl_croak(aTHX_ "Can't do seteuid!\n");
2793 #endif /* IAMSUID */
2794 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2798 else if (!*scriptname) {
2799 forbid_setid("program input from stdin");
2800 PL_rsfp = PerlIO_stdin();
2803 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2804 #if defined(HAS_FCNTL) && defined(F_SETFD)
2806 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2811 #ifndef IAMSUID /* in case script is not readable before setuid */
2813 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2814 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2817 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2818 (int)PERL_REVISION, (int)PERL_VERSION,
2819 (int)PERL_SUBVERSION), PL_origargv);
2820 Perl_croak(aTHX_ "Can't do setuid\n");
2826 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2829 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2830 CopFILE(PL_curcop), Strerror(errno));
2836 * I_SYSSTATVFS HAS_FSTATVFS
2838 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2839 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2840 * here so that metaconfig picks them up. */
2844 S_fd_on_nosuid_fs(pTHX_ int fd)
2846 int check_okay = 0; /* able to do all the required sys/libcalls */
2847 int on_nosuid = 0; /* the fd is on a nosuid fs */
2849 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2850 * fstatvfs() is UNIX98.
2851 * fstatfs() is 4.3 BSD.
2852 * ustat()+getmnt() is pre-4.3 BSD.
2853 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2854 * an irrelevant filesystem while trying to reach the right one.
2857 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2859 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2860 defined(HAS_FSTATVFS)
2861 # define FD_ON_NOSUID_CHECK_OKAY
2862 struct statvfs stfs;
2864 check_okay = fstatvfs(fd, &stfs) == 0;
2865 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2866 # endif /* fstatvfs */
2868 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2869 defined(PERL_MOUNT_NOSUID) && \
2870 defined(HAS_FSTATFS) && \
2871 defined(HAS_STRUCT_STATFS) && \
2872 defined(HAS_STRUCT_STATFS_F_FLAGS)
2873 # define FD_ON_NOSUID_CHECK_OKAY
2876 check_okay = fstatfs(fd, &stfs) == 0;
2877 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2878 # endif /* fstatfs */
2880 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2881 defined(PERL_MOUNT_NOSUID) && \
2882 defined(HAS_FSTAT) && \
2883 defined(HAS_USTAT) && \
2884 defined(HAS_GETMNT) && \
2885 defined(HAS_STRUCT_FS_DATA) && \
2887 # define FD_ON_NOSUID_CHECK_OKAY
2890 if (fstat(fd, &fdst) == 0) {
2892 if (ustat(fdst.st_dev, &us) == 0) {
2894 /* NOSTAT_ONE here because we're not examining fields which
2895 * vary between that case and STAT_ONE. */
2896 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2897 size_t cmplen = sizeof(us.f_fname);
2898 if (sizeof(fsd.fd_req.path) < cmplen)
2899 cmplen = sizeof(fsd.fd_req.path);
2900 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2901 fdst.st_dev == fsd.fd_req.dev) {
2903 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2909 # endif /* fstat+ustat+getmnt */
2911 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2912 defined(HAS_GETMNTENT) && \
2913 defined(HAS_HASMNTOPT) && \
2914 defined(MNTOPT_NOSUID)
2915 # define FD_ON_NOSUID_CHECK_OKAY
2916 FILE *mtab = fopen("/etc/mtab", "r");
2917 struct mntent *entry;
2918 struct stat stb, fsb;
2920 if (mtab && (fstat(fd, &stb) == 0)) {
2921 while (entry = getmntent(mtab)) {
2922 if (stat(entry->mnt_dir, &fsb) == 0
2923 && fsb.st_dev == stb.st_dev)
2925 /* found the filesystem */
2927 if (hasmntopt(entry, MNTOPT_NOSUID))
2930 } /* A single fs may well fail its stat(). */
2935 # endif /* getmntent+hasmntopt */
2938 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2941 #endif /* IAMSUID */
2944 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2950 /* do we need to emulate setuid on scripts? */
2952 /* This code is for those BSD systems that have setuid #! scripts disabled
2953 * in the kernel because of a security problem. Merely defining DOSUID
2954 * in perl will not fix that problem, but if you have disabled setuid
2955 * scripts in the kernel, this will attempt to emulate setuid and setgid
2956 * on scripts that have those now-otherwise-useless bits set. The setuid
2957 * root version must be called suidperl or sperlN.NNN. If regular perl
2958 * discovers that it has opened a setuid script, it calls suidperl with
2959 * the same argv that it had. If suidperl finds that the script it has
2960 * just opened is NOT setuid root, it sets the effective uid back to the
2961 * uid. We don't just make perl setuid root because that loses the
2962 * effective uid we had before invoking perl, if it was different from the
2965 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2966 * be defined in suidperl only. suidperl must be setuid root. The
2967 * Configure script will set this up for you if you want it.
2973 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2974 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2975 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2980 #ifndef HAS_SETREUID
2981 /* On this access check to make sure the directories are readable,
2982 * there is actually a small window that the user could use to make
2983 * filename point to an accessible directory. So there is a faint
2984 * chance that someone could execute a setuid script down in a
2985 * non-accessible directory. I don't know what to do about that.
2986 * But I don't think it's too important. The manual lies when
2987 * it says access() is useful in setuid programs.
2989 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2990 Perl_croak(aTHX_ "Permission denied");
2992 /* If we can swap euid and uid, then we can determine access rights
2993 * with a simple stat of the file, and then compare device and
2994 * inode to make sure we did stat() on the same file we opened.
2995 * Then we just have to make sure he or she can execute it.
2998 struct stat tmpstatbuf;
3002 setreuid(PL_euid,PL_uid) < 0
3005 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3008 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3009 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3010 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3011 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3012 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3013 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3014 Perl_croak(aTHX_ "Permission denied");
3016 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3017 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3018 (void)PerlIO_close(PL_rsfp);
3019 Perl_croak(aTHX_ "Permission denied\n");
3023 setreuid(PL_uid,PL_euid) < 0
3025 # if defined(HAS_SETRESUID)
3026 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3029 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3030 Perl_croak(aTHX_ "Can't reswap uid and euid");
3031 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3032 Perl_croak(aTHX_ "Permission denied\n");
3034 #endif /* HAS_SETREUID */
3035 #endif /* IAMSUID */
3037 if (!S_ISREG(PL_statbuf.st_mode))
3038 Perl_croak(aTHX_ "Permission denied");
3039 if (PL_statbuf.st_mode & S_IWOTH)
3040 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3041 PL_doswitches = FALSE; /* -s is insecure in suid */
3042 CopLINE_inc(PL_curcop);
3043 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3044 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3045 Perl_croak(aTHX_ "No #! line");
3046 s = SvPV(PL_linestr,n_a)+2;
3048 while (!isSPACE(*s)) s++;
3049 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3050 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3051 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3052 Perl_croak(aTHX_ "Not a perl script");
3053 while (*s == ' ' || *s == '\t') s++;
3055 * #! arg must be what we saw above. They can invoke it by
3056 * mentioning suidperl explicitly, but they may not add any strange
3057 * arguments beyond what #! says if they do invoke suidperl that way.
3059 len = strlen(validarg);
3060 if (strEQ(validarg," PHOOEY ") ||
3061 strnNE(s,validarg,len) || !isSPACE(s[len]))
3062 Perl_croak(aTHX_ "Args must match #! line");
3065 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3066 PL_euid == PL_statbuf.st_uid)
3068 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3069 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3070 #endif /* IAMSUID */
3072 if (PL_euid) { /* oops, we're not the setuid root perl */
3073 (void)PerlIO_close(PL_rsfp);
3076 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3077 (int)PERL_REVISION, (int)PERL_VERSION,
3078 (int)PERL_SUBVERSION), PL_origargv);
3080 Perl_croak(aTHX_ "Can't do setuid\n");
3083 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3085 (void)setegid(PL_statbuf.st_gid);
3088 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3090 #ifdef HAS_SETRESGID
3091 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3093 PerlProc_setgid(PL_statbuf.st_gid);
3097 if (PerlProc_getegid() != PL_statbuf.st_gid)
3098 Perl_croak(aTHX_ "Can't do setegid!\n");
3100 if (PL_statbuf.st_mode & S_ISUID) {
3101 if (PL_statbuf.st_uid != PL_euid)
3103 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3106 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3108 #ifdef HAS_SETRESUID
3109 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3111 PerlProc_setuid(PL_statbuf.st_uid);
3115 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3116 Perl_croak(aTHX_ "Can't do seteuid!\n");
3118 else if (PL_uid) { /* oops, mustn't run as root */
3120 (void)seteuid((Uid_t)PL_uid);
3123 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3125 #ifdef HAS_SETRESUID
3126 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3128 PerlProc_setuid((Uid_t)PL_uid);
3132 if (PerlProc_geteuid() != PL_uid)
3133 Perl_croak(aTHX_ "Can't do seteuid!\n");
3136 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3137 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3140 else if (PL_preprocess)
3141 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3142 else if (fdscript >= 0)
3143 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3145 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3147 /* We absolutely must clear out any saved ids here, so we */
3148 /* exec the real perl, substituting fd script for scriptname. */
3149 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3150 PerlIO_rewind(PL_rsfp);
3151 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3152 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3153 if (!PL_origargv[which])
3154 Perl_croak(aTHX_ "Permission denied");
3155 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3156 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3157 #if defined(HAS_FCNTL) && defined(F_SETFD)
3158 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3160 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3161 (int)PERL_REVISION, (int)PERL_VERSION,
3162 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3163 Perl_croak(aTHX_ "Can't do setuid\n");
3164 #endif /* IAMSUID */
3166 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3167 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3168 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3169 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3171 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3174 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3175 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3176 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3177 /* not set-id, must be wrapped */
3183 S_find_beginning(pTHX)
3185 register char *s, *s2;
3187 /* skip forward in input to the real script? */
3190 #ifdef MACOS_TRADITIONAL
3191 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3193 while (PL_doextract || gMacPerl_AlwaysExtract) {
3194 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3195 if (!gMacPerl_AlwaysExtract)
3196 Perl_croak(aTHX_ "No Perl script found in input\n");
3198 if (PL_doextract) /* require explicit override ? */
3199 if (!OverrideExtract(PL_origfilename))
3200 Perl_croak(aTHX_ "User aborted script\n");
3202 PL_doextract = FALSE;
3204 /* Pater peccavi, file does not have #! */
3205 PerlIO_rewind(PL_rsfp);
3210 while (PL_doextract) {
3211 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3212 Perl_croak(aTHX_ "No Perl script found in input\n");
3215 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3216 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3217 PL_doextract = FALSE;
3218 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3220 while (*s == ' ' || *s == '\t') s++;
3222 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3223 if (strnEQ(s2-4,"perl",4))
3225 while ((s = moreswitches(s)))
3228 #ifdef MACOS_TRADITIONAL
3239 PL_uid = PerlProc_getuid();
3240 PL_euid = PerlProc_geteuid();
3241 PL_gid = PerlProc_getgid();
3242 PL_egid = PerlProc_getegid();
3244 PL_uid |= PL_gid << 16;
3245 PL_euid |= PL_egid << 16;
3247 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3251 S_forbid_setid(pTHX_ char *s)
3253 if (PL_euid != PL_uid)
3254 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3255 if (PL_egid != PL_gid)
3256 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3260 Perl_init_debugger(pTHX)
3262 HV *ostash = PL_curstash;
3264 PL_curstash = PL_debstash;
3265 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3266 AvREAL_off(PL_dbargs);
3267 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3268 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3269 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3270 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3271 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3272 sv_setiv(PL_DBsingle, 0);
3273 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3274 sv_setiv(PL_DBtrace, 0);
3275 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3276 sv_setiv(PL_DBsignal, 0);
3277 PL_curstash = ostash;
3280 #ifndef STRESS_REALLOC
3281 #define REASONABLE(size) (size)
3283 #define REASONABLE(size) (1) /* unreasonable */
3287 Perl_init_stacks(pTHX)
3289 /* start with 128-item stack and 8K cxstack */
3290 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3291 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3292 PL_curstackinfo->si_type = PERLSI_MAIN;
3293 PL_curstack = PL_curstackinfo->si_stack;
3294 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3296 PL_stack_base = AvARRAY(PL_curstack);
3297 PL_stack_sp = PL_stack_base;
3298 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3300 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3303 PL_tmps_max = REASONABLE(128);
3305 New(54,PL_markstack,REASONABLE(32),I32);
3306 PL_markstack_ptr = PL_markstack;
3307 PL_markstack_max = PL_markstack + REASONABLE(32);
3311 New(54,PL_scopestack,REASONABLE(32),I32);
3312 PL_scopestack_ix = 0;
3313 PL_scopestack_max = REASONABLE(32);
3315 New(54,PL_savestack,REASONABLE(128),ANY);
3316 PL_savestack_ix = 0;
3317 PL_savestack_max = REASONABLE(128);
3319 New(54,PL_retstack,REASONABLE(16),OP*);
3321 PL_retstack_max = REASONABLE(16);
3329 while (PL_curstackinfo->si_next)
3330 PL_curstackinfo = PL_curstackinfo->si_next;
3331 while (PL_curstackinfo) {
3332 PERL_SI *p = PL_curstackinfo->si_prev;
3333 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3334 Safefree(PL_curstackinfo->si_cxstack);
3335 Safefree(PL_curstackinfo);
3336 PL_curstackinfo = p;
3338 Safefree(PL_tmps_stack);
3339 Safefree(PL_markstack);
3340 Safefree(PL_scopestack);
3341 Safefree(PL_savestack);
3342 Safefree(PL_retstack);
3346 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3357 lex_start(PL_linestr);
3359 PL_subname = newSVpvn("main",4);
3363 S_init_predump_symbols(pTHX)
3368 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3369 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3370 GvMULTI_on(PL_stdingv);
3371 io = GvIOp(PL_stdingv);
3372 IoTYPE(io) = IoTYPE_RDONLY;
3373 IoIFP(io) = PerlIO_stdin();
3374 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3376 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3378 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3381 IoTYPE(io) = IoTYPE_WRONLY;
3382 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3384 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3386 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3388 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3389 GvMULTI_on(PL_stderrgv);
3390 io = GvIOp(PL_stderrgv);
3391 IoTYPE(io) = IoTYPE_WRONLY;
3392 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3393 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3395 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3397 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3400 Safefree(PL_osname);
3401 PL_osname = savepv(OSNAME);
3405 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3410 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3411 char **dup_env_base = 0;
3412 int dup_env_count = 0;
3415 argc--,argv++; /* skip name of script */
3416 if (PL_doswitches) {
3417 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3420 if (argv[0][1] == '-' && !argv[0][2]) {
3424 if ((s = strchr(argv[0], '='))) {
3426 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3429 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3432 PL_toptarget = NEWSV(0,0);
3433 sv_upgrade(PL_toptarget, SVt_PVFM);
3434 sv_setpvn(PL_toptarget, "", 0);
3435 PL_bodytarget = NEWSV(0,0);
3436 sv_upgrade(PL_bodytarget, SVt_PVFM);
3437 sv_setpvn(PL_bodytarget, "", 0);
3438 PL_formtarget = PL_bodytarget;
3441 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3442 #ifdef MACOS_TRADITIONAL
3443 /* $0 is not majick on a Mac */
3444 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3446 sv_setpv(GvSV(tmpgv),PL_origfilename);
3447 magicname("0", "0", 1);
3450 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3452 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3454 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3456 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3457 GvMULTI_on(PL_argvgv);
3458 (void)gv_AVadd(PL_argvgv);
3459 av_clear(GvAVn(PL_argvgv));
3460 for (; argc > 0; argc--,argv++) {
3461 SV *sv = newSVpv(argv[0],0);
3462 av_push(GvAVn(PL_argvgv),sv);
3463 if (PL_widesyscalls)
3464 (void)sv_utf8_decode(sv);
3467 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3469 GvMULTI_on(PL_envgv);
3470 hv = GvHVn(PL_envgv);
3471 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3472 #ifdef USE_ENVIRON_ARRAY
3473 /* Note that if the supplied env parameter is actually a copy
3474 of the global environ then it may now point to free'd memory
3475 if the environment has been modified since. To avoid this
3476 problem we treat env==NULL as meaning 'use the default'
3481 environ[0] = Nullch;
3482 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3485 for (env_base = env; *env; env++)
3487 if ((dup_env_base = (char **)
3488 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3490 for (env = env_base, dup_env = dup_env_base;
3493 /* With environ one needs to use safesysmalloc(). */
3494 *dup_env = safesysmalloc(strlen(*env) + 1);
3495 (void)strcpy(*dup_env, *env);
3501 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3503 for (; *env; env++) {
3504 if (!(s = strchr(*env,'=')))
3510 sv = newSVpv(s--,0);
3511 (void)hv_store(hv, *env, s - *env, sv, 0);
3514 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3517 for (dup_env = dup_env_base; *dup_env; dup_env++)
3518 safesysfree(*dup_env);
3519 safesysfree(dup_env_base);
3521 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3522 #endif /* USE_ENVIRON_ARRAY */
3525 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3526 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3530 S_init_perllib(pTHX)
3535 s = PerlEnv_getenv("PERL5LIB");
3537 incpush(s, TRUE, TRUE);
3539 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3541 /* Treat PERL5?LIB as a possible search list logical name -- the
3542 * "natural" VMS idiom for a Unix path string. We allow each
3543 * element to be a set of |-separated directories for compatibility.
3547 if (my_trnlnm("PERL5LIB",buf,0))
3548 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3550 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3554 /* Use the ~-expanded versions of APPLLIB (undocumented),
3555 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3558 incpush(APPLLIB_EXP, TRUE, TRUE);
3562 incpush(ARCHLIB_EXP, FALSE, FALSE);
3564 #ifdef MACOS_TRADITIONAL
3566 struct stat tmpstatbuf;
3567 SV * privdir = NEWSV(55, 0);
3568 char * macperl = PerlEnv_getenv("MACPERL");
3573 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3574 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3575 incpush(SvPVX(privdir), TRUE, FALSE);
3576 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3577 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3578 incpush(SvPVX(privdir), TRUE, FALSE);
3580 SvREFCNT_dec(privdir);
3583 incpush(":", FALSE, FALSE);
3586 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3589 incpush(PRIVLIB_EXP, TRUE, FALSE);
3591 incpush(PRIVLIB_EXP, FALSE, FALSE);
3595 /* sitearch is always relative to sitelib on Windows for
3596 * DLL-based path intuition to work correctly */
3597 # if !defined(WIN32)
3598 incpush(SITEARCH_EXP, FALSE, FALSE);
3604 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3606 incpush(SITELIB_EXP, FALSE, FALSE);
3610 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3611 incpush(SITELIB_STEM, FALSE, TRUE);
3614 #ifdef PERL_VENDORARCH_EXP
3615 /* vendorarch is always relative to vendorlib on Windows for
3616 * DLL-based path intuition to work correctly */
3617 # if !defined(WIN32)
3618 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3622 #ifdef PERL_VENDORLIB_EXP
3624 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3626 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3630 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3631 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3634 #ifdef PERL_OTHERLIBDIRS
3635 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3639 incpush(".", FALSE, FALSE);
3640 #endif /* MACOS_TRADITIONAL */
3643 #if defined(DOSISH) || defined(EPOC)
3644 # define PERLLIB_SEP ';'
3647 # define PERLLIB_SEP '|'
3649 # if defined(MACOS_TRADITIONAL)
3650 # define PERLLIB_SEP ','
3652 # define PERLLIB_SEP ':'
3656 #ifndef PERLLIB_MANGLE
3657 # define PERLLIB_MANGLE(s,n) (s)
3661 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3663 SV *subdir = Nullsv;
3668 if (addsubdirs || addoldvers) {
3669 subdir = sv_newmortal();
3672 /* Break at all separators */
3674 SV *libdir = NEWSV(55,0);
3677 /* skip any consecutive separators */
3678 while ( *p == PERLLIB_SEP ) {
3679 /* Uncomment the next line for PATH semantics */
3680 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3684 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3685 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3690 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3691 p = Nullch; /* break out */
3693 #ifdef MACOS_TRADITIONAL
3694 if (!strchr(SvPVX(libdir), ':'))
3695 sv_insert(libdir, 0, 0, ":", 1);
3696 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3697 sv_catpv(libdir, ":");
3701 * BEFORE pushing libdir onto @INC we may first push version- and
3702 * archname-specific sub-directories.
3704 if (addsubdirs || addoldvers) {
3705 #ifdef PERL_INC_VERSION_LIST
3706 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3707 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3708 const char **incver;
3710 struct stat tmpstatbuf;
3715 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3717 while (unix[len-1] == '/') len--; /* Cosmetic */
3718 sv_usepvn(libdir,unix,len);
3721 PerlIO_printf(Perl_error_log,
3722 "Failed to unixify @INC element \"%s\"\n",
3726 #ifdef MACOS_TRADITIONAL
3727 #define PERL_AV_SUFFIX_FMT ""
3728 #define PERL_ARCH_FMT "%s:"
3729 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3731 #define PERL_AV_SUFFIX_FMT "/"
3732 #define PERL_ARCH_FMT "/%s"
3733 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3735 /* .../version/archname if -d .../version/archname */
3736 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3738 (int)PERL_REVISION, (int)PERL_VERSION,
3739 (int)PERL_SUBVERSION, ARCHNAME);
3740 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3741 S_ISDIR(tmpstatbuf.st_mode))
3742 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3744 /* .../version if -d .../version */
3745 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3746 (int)PERL_REVISION, (int)PERL_VERSION,
3747 (int)PERL_SUBVERSION);
3748 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3749 S_ISDIR(tmpstatbuf.st_mode))
3750 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3752 /* .../archname if -d .../archname */
3753 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3754 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3755 S_ISDIR(tmpstatbuf.st_mode))
3756 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3759 #ifdef PERL_INC_VERSION_LIST
3761 for (incver = incverlist; *incver; incver++) {
3762 /* .../xxx if -d .../xxx */
3763 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3764 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3765 S_ISDIR(tmpstatbuf.st_mode))
3766 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3772 /* finally push this lib directory on the end of @INC */
3773 av_push(GvAVn(PL_incgv), libdir);
3778 STATIC struct perl_thread *
3779 S_init_main_thread(pTHX)
3781 #if !defined(PERL_IMPLICIT_CONTEXT)
3782 struct perl_thread *thr;
3786 Newz(53, thr, 1, struct perl_thread);
3787 PL_curcop = &PL_compiling;
3788 thr->interp = PERL_GET_INTERP;
3789 thr->cvcache = newHV();
3790 thr->threadsv = newAV();
3791 /* thr->threadsvp is set when find_threadsv is called */
3792 thr->specific = newAV();
3793 thr->flags = THRf_R_JOINABLE;
3794 MUTEX_INIT(&thr->mutex);
3795 /* Handcraft thrsv similarly to mess_sv */
3796 New(53, PL_thrsv, 1, SV);
3797 Newz(53, xpv, 1, XPV);
3798 SvFLAGS(PL_thrsv) = SVt_PV;
3799 SvANY(PL_thrsv) = (void*)xpv;
3800 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3801 SvPVX(PL_thrsv) = (char*)thr;
3802 SvCUR_set(PL_thrsv, sizeof(thr));
3803 SvLEN_set(PL_thrsv, sizeof(thr));
3804 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3805 thr->oursv = PL_thrsv;
3806 PL_chopset = " \n-";
3809 MUTEX_LOCK(&PL_threads_mutex);
3815 MUTEX_UNLOCK(&PL_threads_mutex);
3817 #ifdef HAVE_THREAD_INTERN
3818 Perl_init_thread_intern(thr);
3821 #ifdef SET_THREAD_SELF
3822 SET_THREAD_SELF(thr);
3824 thr->self = pthread_self();
3825 #endif /* SET_THREAD_SELF */
3829 * These must come after the thread self setting
3830 * because sv_setpvn does SvTAINT and the taint
3831 * fields thread selfness being set.
3833 PL_toptarget = NEWSV(0,0);
3834 sv_upgrade(PL_toptarget, SVt_PVFM);
3835 sv_setpvn(PL_toptarget, "", 0);
3836 PL_bodytarget = NEWSV(0,0);
3837 sv_upgrade(PL_bodytarget, SVt_PVFM);
3838 sv_setpvn(PL_bodytarget, "", 0);
3839 PL_formtarget = PL_bodytarget;
3840 thr->errsv = newSVpvn("", 0);
3841 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3844 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3845 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3846 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3847 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3848 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3849 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3851 PL_reginterp_cnt = 0;
3855 #endif /* USE_THREADS */
3858 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3861 line_t oldline = CopLINE(PL_curcop);
3867 while (AvFILL(paramList) >= 0) {
3868 cv = (CV*)av_shift(paramList);
3869 if (PL_savebegin && (paramList == PL_beginav)) {
3870 /* save PL_beginav for compiler */
3871 if (! PL_beginav_save)
3872 PL_beginav_save = newAV();
3873 av_push(PL_beginav_save, (SV*)cv);
3877 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3878 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3884 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3888 (void)SvPV(atsv, len);
3891 PL_curcop = &PL_compiling;
3892 CopLINE_set(PL_curcop, oldline);
3893 if (paramList == PL_beginav)
3894 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3896 Perl_sv_catpvf(aTHX_ atsv,
3897 "%s failed--call queue aborted",
3898 paramList == PL_checkav ? "CHECK"
3899 : paramList == PL_initav ? "INIT"
3901 while (PL_scopestack_ix > oldscope)
3904 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3911 /* my_exit() was called */
3912 while (PL_scopestack_ix > oldscope)
3915 PL_curstash = PL_defstash;
3916 PL_curcop = &PL_compiling;
3917 CopLINE_set(PL_curcop, oldline);
3919 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3920 if (paramList == PL_beginav)
3921 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3923 Perl_croak(aTHX_ "%s failed--call queue aborted",
3924 paramList == PL_checkav ? "CHECK"
3925 : paramList == PL_initav ? "INIT"
3932 PL_curcop = &PL_compiling;
3933 CopLINE_set(PL_curcop, oldline);
3936 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3944 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3946 S_vcall_list_body(pTHX_ va_list args)
3948 CV *cv = va_arg(args, CV*);
3949 return call_list_body(cv);
3954 S_call_list_body(pTHX_ CV *cv)
3956 PUSHMARK(PL_stack_sp);
3957 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3962 Perl_my_exit(pTHX_ U32 status)
3964 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3965 thr, (unsigned long) status));
3974 STATUS_NATIVE_SET(status);
3981 Perl_my_failure_exit(pTHX)
3984 if (vaxc$errno & 1) {
3985 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3986 STATUS_NATIVE_SET(44);
3989 if (!vaxc$errno && errno) /* unlikely */
3990 STATUS_NATIVE_SET(44);
3992 STATUS_NATIVE_SET(vaxc$errno);
3997 STATUS_POSIX_SET(errno);
3999 exitstatus = STATUS_POSIX >> 8;
4000 if (exitstatus & 255)
4001 STATUS_POSIX_SET(exitstatus);
4003 STATUS_POSIX_SET(255);
4010 S_my_exit_jump(pTHX)
4012 register PERL_CONTEXT *cx;
4017 SvREFCNT_dec(PL_e_script);
4018 PL_e_script = Nullsv;
4021 POPSTACK_TO(PL_mainstack);
4022 if (cxstack_ix >= 0) {
4025 POPBLOCK(cx,PL_curpm);
4037 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
4040 p = SvPVX(PL_e_script);
4041 nl = strchr(p, '\n');
4042 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4044 filter_del(read_e_script);
4047 sv_catpvn(buf_sv, p, nl-p);
4048 sv_chop(PL_e_script, nl);