3 * Copyright (c) 1987-2002 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 */
21 char *nw_get_sitelib(const char *pl);
24 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
29 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
30 char *getenv (char *); /* Usually in <stdlib.h> */
33 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
41 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
47 #if defined(USE_5005THREADS)
48 # define INIT_TLS_AND_INTERP \
50 if (!PL_curinterp) { \
51 PERL_SET_INTERP(my_perl); \
57 # if defined(USE_ITHREADS)
58 # define INIT_TLS_AND_INTERP \
60 if (!PL_curinterp) { \
61 PERL_SET_INTERP(my_perl); \
64 PERL_SET_THX(my_perl); \
68 PERL_SET_THX(my_perl); \
72 # define INIT_TLS_AND_INTERP \
74 if (!PL_curinterp) { \
75 PERL_SET_INTERP(my_perl); \
77 PERL_SET_THX(my_perl); \
82 #ifdef PERL_IMPLICIT_SYS
84 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
85 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
86 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
87 struct IPerlDir* ipD, struct IPerlSock* ipS,
88 struct IPerlProc* ipP)
90 PerlInterpreter *my_perl;
91 /* New() needs interpreter, so call malloc() instead */
92 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
94 Zero(my_perl, 1, PerlInterpreter);
110 =head1 Embedding Functions
112 =for apidoc perl_alloc
114 Allocates a new Perl interpreter. See L<perlembed>.
122 PerlInterpreter *my_perl;
123 #ifdef USE_5005THREADS
127 /* New() needs interpreter, so call malloc() instead */
128 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
131 Zero(my_perl, 1, PerlInterpreter);
134 #endif /* PERL_IMPLICIT_SYS */
137 =for apidoc perl_construct
139 Initializes a new Perl interpreter. See L<perlembed>.
145 perl_construct(pTHXx)
147 #ifdef USE_5005THREADS
149 struct perl_thread *thr = NULL;
150 #endif /* FAKE_THREADS */
151 #endif /* USE_5005THREADS */
155 PL_perl_destruct_level = 1;
157 if (PL_perl_destruct_level > 0)
161 /* Init the real globals (and main thread)? */
163 #ifdef USE_5005THREADS
164 MUTEX_INIT(&PL_sv_mutex);
166 * Safe to use basic SV functions from now on (though
167 * not things like mortals or tainting yet).
169 MUTEX_INIT(&PL_eval_mutex);
170 COND_INIT(&PL_eval_cond);
171 MUTEX_INIT(&PL_threads_mutex);
172 COND_INIT(&PL_nthreads_cond);
173 # ifdef EMULATE_ATOMIC_REFCOUNTS
174 MUTEX_INIT(&PL_svref_mutex);
175 # endif /* EMULATE_ATOMIC_REFCOUNTS */
177 MUTEX_INIT(&PL_cred_mutex);
178 MUTEX_INIT(&PL_sv_lock_mutex);
179 MUTEX_INIT(&PL_fdpid_mutex);
181 thr = init_main_thread();
182 #endif /* USE_5005THREADS */
184 #ifdef PERL_FLEXIBLE_EXCEPTIONS
185 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
188 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
190 PL_linestr = NEWSV(65,79);
191 sv_upgrade(PL_linestr,SVt_PVIV);
193 if (!SvREADONLY(&PL_sv_undef)) {
194 /* set read-only and try to insure than we wont see REFCNT==0
197 SvREADONLY_on(&PL_sv_undef);
198 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
200 sv_setpv(&PL_sv_no,PL_No);
202 SvREADONLY_on(&PL_sv_no);
203 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
205 sv_setpv(&PL_sv_yes,PL_Yes);
207 SvREADONLY_on(&PL_sv_yes);
208 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
211 PL_sighandlerp = Perl_sighandler;
212 PL_pidstatus = newHV();
215 PL_rs = newSVpvn("\n", 1);
220 PL_lex_state = LEX_NOTPARSING;
226 SET_NUMERIC_STANDARD();
230 PL_patchlevel = NEWSV(0,4);
231 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
232 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
233 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
234 s = (U8*)SvPVX(PL_patchlevel);
235 /* Build version strings using "native" characters */
236 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
237 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
238 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
240 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
241 SvPOK_on(PL_patchlevel);
242 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
243 + ((NV)PERL_VERSION / (NV)1000)
244 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
245 + ((NV)PERL_SUBVERSION / (NV)1000000)
248 SvNOK_on(PL_patchlevel); /* dual valued */
249 SvUTF8_on(PL_patchlevel);
250 SvREADONLY_on(PL_patchlevel);
253 #if defined(LOCAL_PATCH_COUNT)
254 PL_localpatches = local_patches; /* For possible -v */
257 #ifdef HAVE_INTERP_INTERN
261 PerlIO_init(aTHX); /* Hook to IO system */
263 PL_fdpid = newAV(); /* for remembering popen pids by fd */
264 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
265 PL_errors = newSVpvn("",0);
266 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
267 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
268 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
270 PL_regex_padav = newAV();
271 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
272 PL_regex_pad = AvARRAY(PL_regex_padav);
274 #ifdef USE_REENTRANT_API
275 Perl_reentrant_init(aTHX);
278 /* Note that strtab is a rather special HV. Assumptions are made
279 about not iterating on it, and not adding tie magic to it.
280 It is properly deallocated in perl_destruct() */
283 #ifdef USE_5005THREADS
284 MUTEX_INIT(&PL_strtab_mutex);
286 HvSHAREKEYS_off(PL_strtab); /* mandatory */
287 hv_ksplit(PL_strtab, 512);
289 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
290 _dyld_lookup_and_bind
291 ("__environ", (unsigned long *) &environ_pointer, NULL);
294 #ifdef USE_ENVIRON_ARRAY
295 PL_origenviron = environ;
302 =for apidoc nothreadhook
304 Stub that provides thread hook for perl_destruct when there are
311 Perl_nothreadhook(pTHX)
317 =for apidoc perl_destruct
319 Shuts down a Perl interpreter. See L<perlembed>.
327 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
329 #ifdef USE_5005THREADS
332 #endif /* USE_5005THREADS */
334 /* wait for all pseudo-forked children to finish */
335 PERL_WAIT_FOR_CHILDREN;
337 #ifdef USE_5005THREADS
339 /* Pass 1 on any remaining threads: detach joinables, join zombies */
341 MUTEX_LOCK(&PL_threads_mutex);
342 DEBUG_S(PerlIO_printf(Perl_debug_log,
343 "perl_destruct: waiting for %d threads...\n",
345 for (t = thr->next; t != thr; t = t->next) {
346 MUTEX_LOCK(&t->mutex);
347 switch (ThrSTATE(t)) {
350 DEBUG_S(PerlIO_printf(Perl_debug_log,
351 "perl_destruct: joining zombie %p\n", t));
352 ThrSETSTATE(t, THRf_DEAD);
353 MUTEX_UNLOCK(&t->mutex);
356 * The SvREFCNT_dec below may take a long time (e.g. av
357 * may contain an object scalar whose destructor gets
358 * called) so we have to unlock threads_mutex and start
361 MUTEX_UNLOCK(&PL_threads_mutex);
363 SvREFCNT_dec((SV*)av);
364 DEBUG_S(PerlIO_printf(Perl_debug_log,
365 "perl_destruct: joined zombie %p OK\n", t));
367 case THRf_R_JOINABLE:
368 DEBUG_S(PerlIO_printf(Perl_debug_log,
369 "perl_destruct: detaching thread %p\n", t));
370 ThrSETSTATE(t, THRf_R_DETACHED);
372 * We unlock threads_mutex and t->mutex in the opposite order
373 * from which we locked them just so that DETACH won't
374 * deadlock if it panics. It's only a breach of good style
375 * not a bug since they are unlocks not locks.
377 MUTEX_UNLOCK(&PL_threads_mutex);
379 MUTEX_UNLOCK(&t->mutex);
382 DEBUG_S(PerlIO_printf(Perl_debug_log,
383 "perl_destruct: ignoring %p (state %u)\n",
385 MUTEX_UNLOCK(&t->mutex);
386 /* fall through and out */
389 /* We leave the above "Pass 1" loop with threads_mutex still locked */
391 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
392 while (PL_nthreads > 1)
394 DEBUG_S(PerlIO_printf(Perl_debug_log,
395 "perl_destruct: final wait for %d threads\n",
397 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
399 /* At this point, we're the last thread */
400 MUTEX_UNLOCK(&PL_threads_mutex);
401 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
402 MUTEX_DESTROY(&PL_threads_mutex);
403 COND_DESTROY(&PL_nthreads_cond);
405 #endif /* !defined(FAKE_THREADS) */
406 #endif /* USE_5005THREADS */
408 destruct_level = PL_perl_destruct_level;
412 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
414 if (destruct_level < i)
421 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
426 if (PL_endav && !PL_minus_c)
427 call_list(PL_scopestack_ix, PL_endav);
433 /* Need to flush since END blocks can produce output */
436 if (CALL_FPTR(PL_threadhook)(aTHX)) {
437 /* Threads hook has vetoed further cleanup */
438 return STATUS_NATIVE_EXPORT;
441 /* We must account for everything. */
443 /* Destroy the main CV and syntax tree */
445 /* If running under -d may not have PL_comppad. */
446 PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL;
447 op_free(PL_main_root);
448 PL_main_root = Nullop;
450 PL_curcop = &PL_compiling;
451 PL_main_start = Nullop;
452 SvREFCNT_dec(PL_main_cv);
456 /* Tell PerlIO we are about to tear things apart in case
457 we have layers which are using resources that should
461 PerlIO_destruct(aTHX);
463 if (PL_sv_objcount) {
465 * Try to destruct global references. We do this first so that the
466 * destructors and destructees still exist. Some sv's might remain.
467 * Non-referenced objects are on their own.
472 /* unhook hooks which will soon be, or use, destroyed data */
473 SvREFCNT_dec(PL_warnhook);
474 PL_warnhook = Nullsv;
475 SvREFCNT_dec(PL_diehook);
478 /* call exit list functions */
479 while (PL_exitlistlen-- > 0)
480 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
482 Safefree(PL_exitlist);
484 if (destruct_level == 0){
486 DEBUG_P(debprofdump());
488 #if defined(PERLIO_LAYERS)
489 /* No more IO - including error messages ! */
490 PerlIO_cleanup(aTHX);
493 /* The exit() function will do everything that needs doing. */
494 return STATUS_NATIVE_EXPORT;
497 /* jettison our possibly duplicated environment */
498 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
499 * so we certainly shouldn't free it here
501 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
502 if (environ != PL_origenviron
504 /* only main thread can free environ[0] contents */
505 && PL_curinterp == aTHX
511 for (i = 0; environ[i]; i++)
512 safesysfree(environ[i]);
514 /* Must use safesysfree() when working with environ. */
515 safesysfree(environ);
517 environ = PL_origenviron;
522 /* the syntax tree is shared between clones
523 * so op_free(PL_main_root) only ReREFCNT_dec's
524 * REGEXPs in the parent interpreter
525 * we need to manually ReREFCNT_dec for the clones
528 I32 i = AvFILLp(PL_regex_padav) + 1;
529 SV **ary = AvARRAY(PL_regex_padav);
533 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
535 if (SvFLAGS(resv) & SVf_BREAK) {
536 /* this is PL_reg_curpm, already freed
537 * flag is set in regexec.c:S_regtry
539 SvFLAGS(resv) &= ~SVf_BREAK;
541 else if(SvREPADTMP(resv)) {
542 SvREPADTMP_off(resv);
549 SvREFCNT_dec(PL_regex_padav);
550 PL_regex_padav = Nullav;
554 /* loosen bonds of global variables */
557 (void)PerlIO_close(PL_rsfp);
561 /* Filters for program text */
562 SvREFCNT_dec(PL_rsfp_filters);
563 PL_rsfp_filters = Nullav;
566 PL_preprocess = FALSE;
572 PL_doswitches = FALSE;
573 PL_dowarn = G_WARN_OFF;
574 PL_doextract = FALSE;
575 PL_sawampersand = FALSE; /* must save all match strings */
578 Safefree(PL_inplace);
580 SvREFCNT_dec(PL_patchlevel);
583 SvREFCNT_dec(PL_e_script);
584 PL_e_script = Nullsv;
587 while (--PL_origargc >= 0) {
588 Safefree(PL_origargv[PL_origargc]);
590 Safefree(PL_origargv);
592 /* magical thingies */
594 SvREFCNT_dec(PL_ofs_sv); /* $, */
597 SvREFCNT_dec(PL_ors_sv); /* $\ */
600 SvREFCNT_dec(PL_rs); /* $/ */
603 PL_multiline = 0; /* $* */
604 Safefree(PL_osname); /* $^O */
607 SvREFCNT_dec(PL_statname);
608 PL_statname = Nullsv;
611 /* defgv, aka *_ should be taken care of elsewhere */
613 /* clean up after study() */
614 SvREFCNT_dec(PL_lastscream);
615 PL_lastscream = Nullsv;
616 Safefree(PL_screamfirst);
618 Safefree(PL_screamnext);
622 Safefree(PL_efloatbuf);
623 PL_efloatbuf = Nullch;
626 /* startup and shutdown function lists */
627 SvREFCNT_dec(PL_beginav);
628 SvREFCNT_dec(PL_beginav_save);
629 SvREFCNT_dec(PL_endav);
630 SvREFCNT_dec(PL_checkav);
631 SvREFCNT_dec(PL_checkav_save);
632 SvREFCNT_dec(PL_initav);
634 PL_beginav_save = Nullav;
637 PL_checkav_save = Nullav;
640 /* shortcuts just get cleared */
646 PL_argvoutgv = Nullgv;
648 PL_stderrgv = Nullgv;
649 PL_last_in_gv = Nullgv;
651 PL_debstash = Nullhv;
653 /* reset so print() ends up where we expect */
656 SvREFCNT_dec(PL_argvout_stack);
657 PL_argvout_stack = Nullav;
659 SvREFCNT_dec(PL_modglobal);
660 PL_modglobal = Nullhv;
661 SvREFCNT_dec(PL_preambleav);
662 PL_preambleav = Nullav;
663 SvREFCNT_dec(PL_subname);
665 SvREFCNT_dec(PL_linestr);
667 SvREFCNT_dec(PL_pidstatus);
668 PL_pidstatus = Nullhv;
669 SvREFCNT_dec(PL_toptarget);
670 PL_toptarget = Nullsv;
671 SvREFCNT_dec(PL_bodytarget);
672 PL_bodytarget = Nullsv;
673 PL_formtarget = Nullsv;
675 /* free locale stuff */
676 #ifdef USE_LOCALE_COLLATE
677 Safefree(PL_collation_name);
678 PL_collation_name = Nullch;
681 #ifdef USE_LOCALE_NUMERIC
682 Safefree(PL_numeric_name);
683 PL_numeric_name = Nullch;
684 SvREFCNT_dec(PL_numeric_radix_sv);
687 /* clear utf8 character classes */
688 SvREFCNT_dec(PL_utf8_alnum);
689 SvREFCNT_dec(PL_utf8_alnumc);
690 SvREFCNT_dec(PL_utf8_ascii);
691 SvREFCNT_dec(PL_utf8_alpha);
692 SvREFCNT_dec(PL_utf8_space);
693 SvREFCNT_dec(PL_utf8_cntrl);
694 SvREFCNT_dec(PL_utf8_graph);
695 SvREFCNT_dec(PL_utf8_digit);
696 SvREFCNT_dec(PL_utf8_upper);
697 SvREFCNT_dec(PL_utf8_lower);
698 SvREFCNT_dec(PL_utf8_print);
699 SvREFCNT_dec(PL_utf8_punct);
700 SvREFCNT_dec(PL_utf8_xdigit);
701 SvREFCNT_dec(PL_utf8_mark);
702 SvREFCNT_dec(PL_utf8_toupper);
703 SvREFCNT_dec(PL_utf8_totitle);
704 SvREFCNT_dec(PL_utf8_tolower);
705 SvREFCNT_dec(PL_utf8_tofold);
706 SvREFCNT_dec(PL_utf8_idstart);
707 SvREFCNT_dec(PL_utf8_idcont);
708 PL_utf8_alnum = Nullsv;
709 PL_utf8_alnumc = Nullsv;
710 PL_utf8_ascii = Nullsv;
711 PL_utf8_alpha = Nullsv;
712 PL_utf8_space = Nullsv;
713 PL_utf8_cntrl = Nullsv;
714 PL_utf8_graph = Nullsv;
715 PL_utf8_digit = Nullsv;
716 PL_utf8_upper = Nullsv;
717 PL_utf8_lower = Nullsv;
718 PL_utf8_print = Nullsv;
719 PL_utf8_punct = Nullsv;
720 PL_utf8_xdigit = Nullsv;
721 PL_utf8_mark = Nullsv;
722 PL_utf8_toupper = Nullsv;
723 PL_utf8_totitle = Nullsv;
724 PL_utf8_tolower = Nullsv;
725 PL_utf8_tofold = Nullsv;
726 PL_utf8_idstart = Nullsv;
727 PL_utf8_idcont = Nullsv;
729 if (!specialWARN(PL_compiling.cop_warnings))
730 SvREFCNT_dec(PL_compiling.cop_warnings);
731 PL_compiling.cop_warnings = Nullsv;
732 if (!specialCopIO(PL_compiling.cop_io))
733 SvREFCNT_dec(PL_compiling.cop_io);
734 PL_compiling.cop_io = Nullsv;
735 CopFILE_free(&PL_compiling);
736 CopSTASH_free(&PL_compiling);
738 /* Prepare to destruct main symbol table. */
743 SvREFCNT_dec(PL_curstname);
744 PL_curstname = Nullsv;
746 /* clear queued errors */
747 SvREFCNT_dec(PL_errors);
751 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
752 if (PL_scopestack_ix != 0)
753 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
754 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
755 (long)PL_scopestack_ix);
756 if (PL_savestack_ix != 0)
757 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
758 "Unbalanced saves: %ld more saves than restores\n",
759 (long)PL_savestack_ix);
760 if (PL_tmps_floor != -1)
761 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
762 (long)PL_tmps_floor + 1);
763 if (cxstack_ix != -1)
764 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
765 (long)cxstack_ix + 1);
768 /* Now absolutely destruct everything, somehow or other, loops or no. */
769 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
770 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
772 /* the 2 is for PL_fdpid and PL_strtab */
773 while (PL_sv_count > 2 && sv_clean_all())
776 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
777 SvFLAGS(PL_fdpid) |= SVt_PVAV;
778 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
779 SvFLAGS(PL_strtab) |= SVt_PVHV;
781 AvREAL_off(PL_fdpid); /* no surviving entries */
782 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
785 #ifdef HAVE_INTERP_INTERN
789 /* Destruct the global string table. */
791 /* Yell and reset the HeVAL() slots that are still holding refcounts,
792 * so that sv_free() won't fail on them.
800 max = HvMAX(PL_strtab);
801 array = HvARRAY(PL_strtab);
804 if (hent && ckWARN_d(WARN_INTERNAL)) {
805 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
806 "Unbalanced string table refcount: (%d) for \"%s\"",
807 HeVAL(hent) - Nullsv, HeKEY(hent));
808 HeVAL(hent) = Nullsv;
818 SvREFCNT_dec(PL_strtab);
821 /* free the pointer table used for cloning */
822 ptr_table_free(PL_ptr_table);
825 /* free special SVs */
827 SvREFCNT(&PL_sv_yes) = 0;
828 sv_clear(&PL_sv_yes);
829 SvANY(&PL_sv_yes) = NULL;
830 SvFLAGS(&PL_sv_yes) = 0;
832 SvREFCNT(&PL_sv_no) = 0;
834 SvANY(&PL_sv_no) = NULL;
835 SvFLAGS(&PL_sv_no) = 0;
839 for (i=0; i<=2; i++) {
840 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
841 sv_clear(PERL_DEBUG_PAD(i));
842 SvANY(PERL_DEBUG_PAD(i)) = NULL;
843 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
847 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
848 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
850 #if defined(PERLIO_LAYERS)
851 /* No more IO - including error messages ! */
852 PerlIO_cleanup(aTHX);
855 /* sv_undef needs to stay immortal until after PerlIO_cleanup
856 as currently layers use it rather than Nullsv as a marker
857 for no arg - and will try and SvREFCNT_dec it.
859 SvREFCNT(&PL_sv_undef) = 0;
860 SvREADONLY_off(&PL_sv_undef);
862 Safefree(PL_origfilename);
863 Safefree(PL_reg_start_tmp);
865 Safefree(PL_reg_curpm);
866 Safefree(PL_reg_poscache);
867 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
868 Safefree(PL_op_mask);
869 Safefree(PL_psig_ptr);
870 Safefree(PL_psig_name);
871 Safefree(PL_bitcount);
872 Safefree(PL_psig_pend);
874 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
876 DEBUG_P(debprofdump());
877 #ifdef USE_5005THREADS
878 MUTEX_DESTROY(&PL_strtab_mutex);
879 MUTEX_DESTROY(&PL_sv_mutex);
880 MUTEX_DESTROY(&PL_eval_mutex);
881 MUTEX_DESTROY(&PL_cred_mutex);
882 MUTEX_DESTROY(&PL_fdpid_mutex);
883 COND_DESTROY(&PL_eval_cond);
884 #ifdef EMULATE_ATOMIC_REFCOUNTS
885 MUTEX_DESTROY(&PL_svref_mutex);
886 #endif /* EMULATE_ATOMIC_REFCOUNTS */
888 /* As the penultimate thing, free the non-arena SV for thrsv */
889 Safefree(SvPVX(PL_thrsv));
890 Safefree(SvANY(PL_thrsv));
893 #endif /* USE_5005THREADS */
895 #ifdef USE_REENTRANT_API
896 Perl_reentrant_free(aTHX);
901 /* As the absolutely last thing, free the non-arena SV for mess() */
904 /* it could have accumulated taint magic */
905 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
908 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
909 moremagic = mg->mg_moremagic;
910 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
912 Safefree(mg->mg_ptr);
916 /* we know that type >= SVt_PV */
917 (void)SvOOK_off(PL_mess_sv);
918 Safefree(SvPVX(PL_mess_sv));
919 Safefree(SvANY(PL_mess_sv));
920 Safefree(PL_mess_sv);
923 return STATUS_NATIVE_EXPORT;
927 =for apidoc perl_free
929 Releases a Perl interpreter. See L<perlembed>.
937 #if defined(WIN32) || defined(NETWARE)
938 # if defined(PERL_IMPLICIT_SYS)
940 void *host = nw_internal_host;
942 void *host = w32_internal_host;
946 nw_delete_internal_host(host);
948 win32_delete_internal_host(host);
959 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
961 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
962 PL_exitlist[PL_exitlistlen].fn = fn;
963 PL_exitlist[PL_exitlistlen].ptr = ptr;
968 =for apidoc perl_parse
970 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
976 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
981 #ifdef USE_5005THREADS
985 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
988 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
989 setuid perl scripts securely.\n");
995 /* we copy rather than point to argv
996 * since perl_clone will copy and perl_destruct
997 * has no way of knowing if we've made a copy or
1000 int i = PL_origargc;
1001 New(0, PL_origargv, i+1, char*);
1002 PL_origargv[i] = '\0';
1004 PL_origargv[i] = savepv(argv[i]);
1012 /* Come here if running an undumped a.out. */
1014 PL_origfilename = savepv(argv[0]);
1015 PL_do_undump = FALSE;
1016 cxstack_ix = -1; /* start label stack again */
1018 init_postdump_symbols(argc,argv,env);
1023 PL_curpad = AvARRAY(PL_comppad);
1024 op_free(PL_main_root);
1025 PL_main_root = Nullop;
1027 PL_main_start = Nullop;
1028 SvREFCNT_dec(PL_main_cv);
1029 PL_main_cv = Nullcv;
1032 oldscope = PL_scopestack_ix;
1033 PL_dowarn = G_WARN_OFF;
1035 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1036 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1042 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1043 parse_body(env,xsinit);
1046 call_list(oldscope, PL_checkav);
1053 /* my_exit() was called */
1054 while (PL_scopestack_ix > oldscope)
1057 PL_curstash = PL_defstash;
1059 call_list(oldscope, PL_checkav);
1060 ret = STATUS_NATIVE_EXPORT;
1063 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1071 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1073 S_vparse_body(pTHX_ va_list args)
1075 char **env = va_arg(args, char**);
1076 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1078 return parse_body(env, xsinit);
1083 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1085 int argc = PL_origargc;
1086 char **argv = PL_origargv;
1087 char *scriptname = NULL;
1089 VOL bool dosearch = FALSE;
1090 char *validarg = "";
1094 char *cddir = Nullch;
1096 sv_setpvn(PL_linestr,"",0);
1097 sv = newSVpvn("",0); /* first used for -I flags */
1101 for (argc--,argv++; argc > 0; argc--,argv++) {
1102 if (argv[0][0] != '-' || !argv[0][1])
1106 validarg = " PHOOEY ";
1115 win32_argv2utf8(argc-1, argv+1);
1118 #ifndef PERL_STRICT_CR
1142 if ((s = moreswitches(s)))
1147 if( !PL_tainting ) {
1148 PL_taint_warn = TRUE;
1155 PL_taint_warn = FALSE;
1160 #ifdef MACOS_TRADITIONAL
1161 /* ignore -e for Dev:Pseudo argument */
1162 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1165 if (PL_euid != PL_uid || PL_egid != PL_gid)
1166 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1168 PL_e_script = newSVpvn("",0);
1169 filter_add(read_e_script, NULL);
1172 sv_catpv(PL_e_script, s);
1174 sv_catpv(PL_e_script, argv[1]);
1178 Perl_croak(aTHX_ "No code specified for -e");
1179 sv_catpv(PL_e_script, "\n");
1182 case 'I': /* -I handled both here and in moreswitches() */
1184 if (!*++s && (s=argv[1]) != Nullch) {
1189 STRLEN len = strlen(s);
1190 p = savepvn(s, len);
1191 incpush(p, TRUE, TRUE);
1192 sv_catpvn(sv, "-I", 2);
1193 sv_catpvn(sv, p, len);
1194 sv_catpvn(sv, " ", 1);
1198 Perl_croak(aTHX_ "No directory specified for -I");
1202 PL_preprocess = TRUE;
1212 PL_preambleav = newAV();
1213 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1215 PL_Sv = newSVpv("print myconfig();",0);
1217 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1219 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1221 sv_catpv(PL_Sv,"\" Compile-time options:");
1223 sv_catpv(PL_Sv," DEBUGGING");
1225 # ifdef MULTIPLICITY
1226 sv_catpv(PL_Sv," MULTIPLICITY");
1228 # ifdef USE_5005THREADS
1229 sv_catpv(PL_Sv," USE_5005THREADS");
1231 # ifdef USE_ITHREADS
1232 sv_catpv(PL_Sv," USE_ITHREADS");
1234 # ifdef USE_64_BIT_INT
1235 sv_catpv(PL_Sv," USE_64_BIT_INT");
1237 # ifdef USE_64_BIT_ALL
1238 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1240 # ifdef USE_LONG_DOUBLE
1241 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1243 # ifdef USE_LARGE_FILES
1244 sv_catpv(PL_Sv," USE_LARGE_FILES");
1247 sv_catpv(PL_Sv," USE_SOCKS");
1249 # ifdef PERL_IMPLICIT_CONTEXT
1250 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1252 # ifdef PERL_IMPLICIT_SYS
1253 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1255 sv_catpv(PL_Sv,"\\n\",");
1257 #if defined(LOCAL_PATCH_COUNT)
1258 if (LOCAL_PATCH_COUNT > 0) {
1260 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1261 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1262 if (PL_localpatches[i])
1263 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1267 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1270 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1272 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1275 sv_catpv(PL_Sv, "; \
1277 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1280 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1283 print \" \\%ENV:\\n @env\\n\" if @env; \
1284 print \" \\@INC:\\n @INC\\n\";");
1287 PL_Sv = newSVpv("config_vars(qw(",0);
1288 sv_catpv(PL_Sv, ++s);
1289 sv_catpv(PL_Sv, "))");
1292 av_push(PL_preambleav, PL_Sv);
1293 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1296 PL_doextract = TRUE;
1304 if (!*++s || isSPACE(*s)) {
1308 /* catch use of gnu style long options */
1309 if (strEQ(s, "version")) {
1313 if (strEQ(s, "help")) {
1320 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1326 #ifndef SECURE_INTERNAL_GETENV
1329 (s = PerlEnv_getenv("PERL5OPT")))
1334 if (*s == '-' && *(s+1) == 'T') {
1336 PL_taint_warn = FALSE;
1339 char *popt_copy = Nullch;
1352 if (!strchr("DIMUdmtw", *s))
1353 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1357 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1358 s = popt_copy + (s - popt);
1359 d = popt_copy + (d - popt);
1366 if( !PL_tainting ) {
1367 PL_taint_warn = TRUE;
1377 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1378 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1382 scriptname = argv[0];
1385 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1387 else if (scriptname == Nullch) {
1389 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1397 open_script(scriptname,dosearch,sv,&fdscript);
1399 validate_suid(validarg, scriptname,fdscript);
1402 #if defined(SIGCHLD) || defined(SIGCLD)
1405 # define SIGCHLD SIGCLD
1407 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1408 if (sigstate == SIG_IGN) {
1409 if (ckWARN(WARN_SIGNAL))
1410 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1411 "Can't ignore signal CHLD, forcing to default");
1412 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1418 #ifdef MACOS_TRADITIONAL
1419 if (PL_doextract || gMacPerl_AlwaysExtract) {
1424 if (cddir && PerlDir_chdir(cddir) < 0)
1425 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1429 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1430 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1431 CvUNIQUE_on(PL_compcv);
1433 PL_comppad = newAV();
1434 av_push(PL_comppad, Nullsv);
1435 PL_curpad = AvARRAY(PL_comppad);
1436 PL_comppad_name = newAV();
1437 PL_comppad_name_fill = 0;
1438 PL_min_intro_pending = 0;
1440 #ifdef USE_5005THREADS
1441 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1442 PL_curpad[0] = (SV*)newAV();
1443 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1444 CvOWNER(PL_compcv) = 0;
1445 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1446 MUTEX_INIT(CvMUTEXP(PL_compcv));
1447 #endif /* USE_5005THREADS */
1449 comppadlist = newAV();
1450 AvREAL_off(comppadlist);
1451 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1452 av_store(comppadlist, 1, (SV*)PL_comppad);
1453 CvPADLIST(PL_compcv) = comppadlist;
1456 boot_core_UNIVERSAL();
1458 boot_core_xsutils();
1462 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1464 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1470 # ifdef HAS_SOCKS5_INIT
1471 socks5_init(argv[0]);
1477 init_predump_symbols();
1478 /* init_postdump_symbols not currently designed to be called */
1479 /* more than once (ENV isn't cleared first, for example) */
1480 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1482 init_postdump_symbols(argc,argv,env);
1484 /* PL_wantutf8 is conditionally turned on by
1485 * locale.c:Perl_init_i18nl10n() if the environment
1486 * look like the user wants to use UTF-8. */
1487 if (PL_wantutf8) { /* Requires init_predump_symbols(). */
1491 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1492 * _and_ the default open discipline. */
1493 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1494 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1495 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1496 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1497 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1498 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1499 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1500 sv_setpvn(sv, ":utf8\0:utf8", 11);
1507 /* now parse the script */
1509 SETERRNO(0,SS$_NORMAL);
1511 #ifdef MACOS_TRADITIONAL
1512 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1514 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1516 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1517 MacPerl_MPWFileName(PL_origfilename));
1521 if (yyparse() || PL_error_count) {
1523 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1525 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1530 CopLINE_set(PL_curcop, 0);
1531 PL_curstash = PL_defstash;
1532 PL_preprocess = FALSE;
1534 SvREFCNT_dec(PL_e_script);
1535 PL_e_script = Nullsv;
1539 Not sure that this is still the right place to do this now that we
1540 no longer use PL_nrs. HVDS 2001/09/09
1542 sv_setsv(get_sv("/", TRUE), PL_rs);
1548 SAVECOPFILE(PL_curcop);
1549 SAVECOPLINE(PL_curcop);
1550 gv_check(PL_defstash);
1557 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1558 dump_mstats("after compilation:");
1567 =for apidoc perl_run
1569 Tells a Perl interpreter to run. See L<perlembed>.
1580 #ifdef USE_5005THREADS
1584 oldscope = PL_scopestack_ix;
1589 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1591 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1597 cxstack_ix = -1; /* start context stack again */
1599 case 0: /* normal completion */
1600 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1605 case 2: /* my_exit() */
1606 while (PL_scopestack_ix > oldscope)
1609 PL_curstash = PL_defstash;
1610 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1611 PL_endav && !PL_minus_c)
1612 call_list(oldscope, PL_endav);
1614 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1615 dump_mstats("after execution: ");
1617 ret = STATUS_NATIVE_EXPORT;
1621 POPSTACK_TO(PL_mainstack);
1624 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1634 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1636 S_vrun_body(pTHX_ va_list args)
1638 I32 oldscope = va_arg(args, I32);
1640 return run_body(oldscope);
1646 S_run_body(pTHX_ I32 oldscope)
1648 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1649 PL_sawampersand ? "Enabling" : "Omitting"));
1651 if (!PL_restartop) {
1652 DEBUG_x(dump_all());
1653 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1654 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1658 #ifdef MACOS_TRADITIONAL
1659 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1660 (gMacPerl_ErrorFormat ? "# " : ""),
1661 MacPerl_MPWFileName(PL_origfilename));
1663 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1667 if (PERLDB_SINGLE && PL_DBsingle)
1668 sv_setiv(PL_DBsingle, 1);
1670 call_list(oldscope, PL_initav);
1676 PL_op = PL_restartop;
1680 else if (PL_main_start) {
1681 CvDEPTH(PL_main_cv) = 1;
1682 PL_op = PL_main_start;
1692 =head1 SV Manipulation Functions
1694 =for apidoc p||get_sv
1696 Returns the SV of the specified Perl scalar. If C<create> is set and the
1697 Perl variable does not exist then it will be created. If C<create> is not
1698 set and the variable does not exist then NULL is returned.
1704 Perl_get_sv(pTHX_ const char *name, I32 create)
1707 #ifdef USE_5005THREADS
1708 if (name[1] == '\0' && !isALPHA(name[0])) {
1709 PADOFFSET tmp = find_threadsv(name);
1710 if (tmp != NOT_IN_PAD)
1711 return THREADSV(tmp);
1713 #endif /* USE_5005THREADS */
1714 gv = gv_fetchpv(name, create, SVt_PV);
1721 =head1 Array Manipulation Functions
1723 =for apidoc p||get_av
1725 Returns the AV of the specified Perl array. If C<create> is set and the
1726 Perl variable does not exist then it will be created. If C<create> is not
1727 set and the variable does not exist then NULL is returned.
1733 Perl_get_av(pTHX_ const char *name, I32 create)
1735 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1744 =head1 Hash Manipulation Functions
1746 =for apidoc p||get_hv
1748 Returns the HV of the specified Perl hash. If C<create> is set and the
1749 Perl variable does not exist then it will be created. If C<create> is not
1750 set and the variable does not exist then NULL is returned.
1756 Perl_get_hv(pTHX_ const char *name, I32 create)
1758 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1767 =head1 CV Manipulation Functions
1769 =for apidoc p||get_cv
1771 Returns the CV of the specified Perl subroutine. If C<create> is set and
1772 the Perl subroutine does not exist then it will be declared (which has the
1773 same effect as saying C<sub name;>). If C<create> is not set and the
1774 subroutine does not exist then NULL is returned.
1780 Perl_get_cv(pTHX_ const char *name, I32 create)
1782 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1783 /* XXX unsafe for threads if eval_owner isn't held */
1784 /* XXX this is probably not what they think they're getting.
1785 * It has the same effect as "sub name;", i.e. just a forward
1787 if (create && !GvCVu(gv))
1788 return newSUB(start_subparse(FALSE, 0),
1789 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1797 /* Be sure to refetch the stack pointer after calling these routines. */
1801 =head1 Callback Functions
1803 =for apidoc p||call_argv
1805 Performs a callback to the specified Perl sub. See L<perlcall>.
1811 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1813 /* See G_* flags in cop.h */
1814 /* null terminated arg list */
1821 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1826 return call_pv(sub_name, flags);
1830 =for apidoc p||call_pv
1832 Performs a callback to the specified Perl sub. See L<perlcall>.
1838 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1839 /* name of the subroutine */
1840 /* See G_* flags in cop.h */
1842 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1846 =for apidoc p||call_method
1848 Performs a callback to the specified Perl method. The blessed object must
1849 be on the stack. See L<perlcall>.
1855 Perl_call_method(pTHX_ const char *methname, I32 flags)
1856 /* name of the subroutine */
1857 /* See G_* flags in cop.h */
1859 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1862 /* May be called with any of a CV, a GV, or an SV containing the name. */
1864 =for apidoc p||call_sv
1866 Performs a callback to the Perl sub whose name is in the SV. See
1873 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1874 /* See G_* flags in cop.h */
1877 LOGOP myop; /* fake syntax tree node */
1880 volatile I32 retval = 0;
1882 bool oldcatch = CATCH_GET;
1887 if (flags & G_DISCARD) {
1892 Zero(&myop, 1, LOGOP);
1893 myop.op_next = Nullop;
1894 if (!(flags & G_NOARGS))
1895 myop.op_flags |= OPf_STACKED;
1896 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1897 (flags & G_ARRAY) ? OPf_WANT_LIST :
1902 EXTEND(PL_stack_sp, 1);
1903 *++PL_stack_sp = sv;
1905 oldscope = PL_scopestack_ix;
1907 if (PERLDB_SUB && PL_curstash != PL_debstash
1908 /* Handle first BEGIN of -d. */
1909 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1910 /* Try harder, since this may have been a sighandler, thus
1911 * curstash may be meaningless. */
1912 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1913 && !(flags & G_NODEBUG))
1914 PL_op->op_private |= OPpENTERSUB_DB;
1916 if (flags & G_METHOD) {
1917 Zero(&method_op, 1, UNOP);
1918 method_op.op_next = PL_op;
1919 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1920 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1921 PL_op = (OP*)&method_op;
1924 if (!(flags & G_EVAL)) {
1926 call_body((OP*)&myop, FALSE);
1927 retval = PL_stack_sp - (PL_stack_base + oldmark);
1928 CATCH_SET(oldcatch);
1931 myop.op_other = (OP*)&myop;
1933 /* we're trying to emulate pp_entertry() here */
1935 register PERL_CONTEXT *cx;
1936 I32 gimme = GIMME_V;
1941 push_return(Nullop);
1942 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1944 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1946 PL_in_eval = EVAL_INEVAL;
1947 if (flags & G_KEEPERR)
1948 PL_in_eval |= EVAL_KEEPERR;
1954 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1956 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1963 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1965 call_body((OP*)&myop, FALSE);
1967 retval = PL_stack_sp - (PL_stack_base + oldmark);
1968 if (!(flags & G_KEEPERR))
1975 /* my_exit() was called */
1976 PL_curstash = PL_defstash;
1979 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1980 Perl_croak(aTHX_ "Callback called exit");
1985 PL_op = PL_restartop;
1989 PL_stack_sp = PL_stack_base + oldmark;
1990 if (flags & G_ARRAY)
1994 *++PL_stack_sp = &PL_sv_undef;
1999 if (PL_scopestack_ix > oldscope) {
2003 register PERL_CONTEXT *cx;
2015 if (flags & G_DISCARD) {
2016 PL_stack_sp = PL_stack_base + oldmark;
2025 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2027 S_vcall_body(pTHX_ va_list args)
2029 OP *myop = va_arg(args, OP*);
2030 int is_eval = va_arg(args, int);
2032 call_body(myop, is_eval);
2038 S_call_body(pTHX_ OP *myop, int is_eval)
2040 if (PL_op == myop) {
2042 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2044 PL_op = Perl_pp_entersub(aTHX); /* this does */
2050 /* Eval a string. The G_EVAL flag is always assumed. */
2053 =for apidoc p||eval_sv
2055 Tells Perl to C<eval> the string in the SV.
2061 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2063 /* See G_* flags in cop.h */
2066 UNOP myop; /* fake syntax tree node */
2067 volatile I32 oldmark = SP - PL_stack_base;
2068 volatile I32 retval = 0;
2074 if (flags & G_DISCARD) {
2081 Zero(PL_op, 1, UNOP);
2082 EXTEND(PL_stack_sp, 1);
2083 *++PL_stack_sp = sv;
2084 oldscope = PL_scopestack_ix;
2086 if (!(flags & G_NOARGS))
2087 myop.op_flags = OPf_STACKED;
2088 myop.op_next = Nullop;
2089 myop.op_type = OP_ENTEREVAL;
2090 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2091 (flags & G_ARRAY) ? OPf_WANT_LIST :
2093 if (flags & G_KEEPERR)
2094 myop.op_flags |= OPf_SPECIAL;
2096 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2098 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2105 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2107 call_body((OP*)&myop,TRUE);
2109 retval = PL_stack_sp - (PL_stack_base + oldmark);
2110 if (!(flags & G_KEEPERR))
2117 /* my_exit() was called */
2118 PL_curstash = PL_defstash;
2121 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2122 Perl_croak(aTHX_ "Callback called exit");
2127 PL_op = PL_restartop;
2131 PL_stack_sp = PL_stack_base + oldmark;
2132 if (flags & G_ARRAY)
2136 *++PL_stack_sp = &PL_sv_undef;
2142 if (flags & G_DISCARD) {
2143 PL_stack_sp = PL_stack_base + oldmark;
2153 =for apidoc p||eval_pv
2155 Tells Perl to C<eval> the given string and return an SV* result.
2161 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2164 SV* sv = newSVpv(p, 0);
2166 eval_sv(sv, G_SCALAR);
2173 if (croak_on_error && SvTRUE(ERRSV)) {
2175 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2181 /* Require a module. */
2184 =head1 Embedding Functions
2186 =for apidoc p||require_pv
2188 Tells Perl to C<require> the file named by the string argument. It is
2189 analogous to the Perl code C<eval "require '$file'">. It's even
2190 implemented that way; consider using Perl_load_module instead.
2195 Perl_require_pv(pTHX_ const char *pv)
2199 PUSHSTACKi(PERLSI_REQUIRE);
2201 sv = sv_newmortal();
2202 sv_setpv(sv, "require '");
2205 eval_sv(sv, G_DISCARD);
2211 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2215 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2216 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2220 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2222 /* This message really ought to be max 23 lines.
2223 * Removed -h because the user already knows that option. Others? */
2225 static char *usage_msg[] = {
2226 "-0[octal] specify record separator (\\0, if no argument)",
2227 "-a autosplit mode with -n or -p (splits $_ into @F)",
2228 "-C enable native wide character system interfaces",
2229 "-c check syntax only (runs BEGIN and CHECK blocks)",
2230 "-d[:debugger] run program under debugger",
2231 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2232 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2233 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2234 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2235 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2236 "-l[octal] enable line ending processing, specifies line terminator",
2237 "-[mM][-]module execute `use/no module...' before executing program",
2238 "-n assume 'while (<>) { ... }' loop around program",
2239 "-p assume loop like -n but print line also, like sed",
2240 "-P run program through C preprocessor before compilation",
2241 "-s enable rudimentary parsing for switches after programfile",
2242 "-S look for programfile using PATH environment variable",
2243 "-T enable tainting checks",
2244 "-t enable tainting warnings",
2245 "-u dump core after parsing program",
2246 "-U allow unsafe operations",
2247 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2248 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2249 "-w enable many useful warnings (RECOMMENDED)",
2250 "-W enable all warnings",
2251 "-X disable all warnings",
2252 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2256 char **p = usage_msg;
2258 PerlIO_printf(PerlIO_stdout(),
2259 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2262 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2265 /* This routine handles any switches that can be given during run */
2268 Perl_moreswitches(pTHX_ char *s)
2278 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2279 SvREFCNT_dec(PL_rs);
2280 if (rschar & ~((U8)~0))
2281 PL_rs = &PL_sv_undef;
2282 else if (!rschar && numlen >= 2)
2283 PL_rs = newSVpvn("", 0);
2285 char ch = (char)rschar;
2286 PL_rs = newSVpvn(&ch, 1);
2291 PL_widesyscalls = TRUE;
2297 while (*s && !isSPACE(*s)) ++s;
2299 PL_splitstr = savepv(PL_splitstr);
2312 /* The following permits -d:Mod to accepts arguments following an =
2313 in the fashion that -MSome::Mod does. */
2314 if (*s == ':' || *s == '=') {
2317 sv = newSVpv("use Devel::", 0);
2319 /* We now allow -d:Module=Foo,Bar */
2320 while(isALNUM(*s) || *s==':') ++s;
2322 sv_catpv(sv, start);
2324 sv_catpvn(sv, start, s-start);
2325 sv_catpv(sv, " split(/,/,q{");
2330 my_setenv("PERL5DB", SvPV(sv, PL_na));
2333 PL_perldb = PERLDB_ALL;
2341 if (isALPHA(s[1])) {
2342 /* if adding extra options, remember to update DEBUG_MASK */
2343 static char debopts[] = "psltocPmfrxuLHXDSTRJvC";
2346 for (s++; *s && (d = strchr(debopts,*s)); s++)
2347 PL_debug |= 1 << (d - debopts);
2350 PL_debug = atoi(s+1);
2351 for (s++; isDIGIT(*s); s++) ;
2354 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2355 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2356 "-Dp not implemented on this platform\n");
2358 PL_debug |= DEBUG_TOP_FLAG;
2359 #else /* !DEBUGGING */
2360 if (ckWARN_d(WARN_DEBUGGING))
2361 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2362 "Recompile perl with -DDEBUGGING to use -D switch\n");
2363 for (s++; isALNUM(*s); s++) ;
2369 usage(PL_origargv[0]);
2373 Safefree(PL_inplace);
2374 #if defined(__CYGWIN__) /* do backup extension automagically */
2375 if (*(s+1) == '\0') {
2376 PL_inplace = savepv(".bak");
2379 #endif /* __CYGWIN__ */
2380 PL_inplace = savepv(s+1);
2382 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2385 if (*s == '-') /* Additional switches on #! line. */
2389 case 'I': /* -I handled both here and in parse_body() */
2392 while (*s && isSPACE(*s))
2397 /* ignore trailing spaces (possibly followed by other switches) */
2399 for (e = p; *e && !isSPACE(*e); e++) ;
2403 } while (*p && *p != '-');
2404 e = savepvn(s, e-s);
2405 incpush(e, TRUE, TRUE);
2412 Perl_croak(aTHX_ "No directory specified for -I");
2418 SvREFCNT_dec(PL_ors_sv);
2423 PL_ors_sv = newSVpvn("\n",1);
2424 numlen = 3 + (*s == '0');
2425 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2429 if (RsPARA(PL_rs)) {
2430 PL_ors_sv = newSVpvn("\n\n",2);
2433 PL_ors_sv = newSVsv(PL_rs);
2438 forbid_setid("-M"); /* XXX ? */
2441 forbid_setid("-m"); /* XXX ? */
2446 /* -M-foo == 'no foo' */
2447 if (*s == '-') { use = "no "; ++s; }
2448 sv = newSVpv(use,0);
2450 /* We allow -M'Module qw(Foo Bar)' */
2451 while(isALNUM(*s) || *s==':') ++s;
2453 sv_catpv(sv, start);
2454 if (*(start-1) == 'm') {
2456 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2457 sv_catpv( sv, " ()");
2461 Perl_croak(aTHX_ "Module name required with -%c option",
2463 sv_catpvn(sv, start, s-start);
2464 sv_catpv(sv, " split(/,/,q{");
2470 PL_preambleav = newAV();
2471 av_push(PL_preambleav, sv);
2474 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2486 PL_doswitches = TRUE;
2491 Perl_croak(aTHX_ "Too late for \"-t\" option");
2496 Perl_croak(aTHX_ "Too late for \"-T\" option");
2500 #ifdef MACOS_TRADITIONAL
2501 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2503 PL_do_undump = TRUE;
2512 PerlIO_printf(PerlIO_stdout(),
2513 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2514 PL_patchlevel, ARCHNAME));
2516 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2517 PerlIO_printf(PerlIO_stdout(),
2518 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2519 PerlIO_printf(PerlIO_stdout(),
2520 Perl_form(aTHX_ " built under %s at %s %s\n",
2521 OSNAME, __DATE__, __TIME__));
2522 PerlIO_printf(PerlIO_stdout(),
2523 Perl_form(aTHX_ " OS Specific Release: %s\n",
2527 #if defined(LOCAL_PATCH_COUNT)
2528 if (LOCAL_PATCH_COUNT > 0)
2529 PerlIO_printf(PerlIO_stdout(),
2530 "\n(with %d registered patch%s, "
2531 "see perl -V for more detail)",
2532 (int)LOCAL_PATCH_COUNT,
2533 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2536 PerlIO_printf(PerlIO_stdout(),
2537 "\n\nCopyright 1987-2002, Larry Wall\n");
2538 #ifdef MACOS_TRADITIONAL
2539 PerlIO_printf(PerlIO_stdout(),
2540 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2541 "maintained by Chris Nandor\n");
2544 PerlIO_printf(PerlIO_stdout(),
2545 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2548 PerlIO_printf(PerlIO_stdout(),
2549 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2550 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2553 PerlIO_printf(PerlIO_stdout(),
2554 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2555 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2558 PerlIO_printf(PerlIO_stdout(),
2559 "atariST series port, ++jrb bammi@cadence.com\n");
2562 PerlIO_printf(PerlIO_stdout(),
2563 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2566 PerlIO_printf(PerlIO_stdout(),
2567 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2570 PerlIO_printf(PerlIO_stdout(),
2571 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2574 PerlIO_printf(PerlIO_stdout(),
2575 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2578 PerlIO_printf(PerlIO_stdout(),
2579 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2582 PerlIO_printf(PerlIO_stdout(),
2583 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2586 PerlIO_printf(PerlIO_stdout(),
2587 "MiNT port by Guido Flohr, 1997-1999\n");
2590 PerlIO_printf(PerlIO_stdout(),
2591 "EPOC port by Olaf Flebbe, 1999-2002\n");
2594 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2595 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2598 #ifdef BINARY_BUILD_NOTICE
2599 BINARY_BUILD_NOTICE;
2601 PerlIO_printf(PerlIO_stdout(),
2603 Perl may be copied only under the terms of either the Artistic License or the\n\
2604 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2605 Complete documentation for Perl, including FAQ lists, should be found on\n\
2606 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2607 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2610 if (! (PL_dowarn & G_WARN_ALL_MASK))
2611 PL_dowarn |= G_WARN_ON;
2615 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2616 if (!specialWARN(PL_compiling.cop_warnings))
2617 SvREFCNT_dec(PL_compiling.cop_warnings);
2618 PL_compiling.cop_warnings = pWARN_ALL ;
2622 PL_dowarn = G_WARN_ALL_OFF;
2623 if (!specialWARN(PL_compiling.cop_warnings))
2624 SvREFCNT_dec(PL_compiling.cop_warnings);
2625 PL_compiling.cop_warnings = pWARN_NONE ;
2630 if (s[1] == '-') /* Additional switches on #! line. */
2635 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2641 #ifdef ALTERNATE_SHEBANG
2642 case 'S': /* OS/2 needs -S on "extproc" line. */
2650 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2655 /* compliments of Tom Christiansen */
2657 /* unexec() can be found in the Gnu emacs distribution */
2658 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2661 Perl_my_unexec(pTHX)
2669 prog = newSVpv(BIN_EXP, 0);
2670 sv_catpv(prog, "/perl");
2671 file = newSVpv(PL_origfilename, 0);
2672 sv_catpv(file, ".perldump");
2674 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2675 /* unexec prints msg to stderr in case of failure */
2676 PerlProc_exit(status);
2679 # include <lib$routines.h>
2680 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2682 ABORT(); /* for use with undump */
2687 /* initialize curinterp */
2693 # define PERLVAR(var,type)
2694 # define PERLVARA(var,n,type)
2695 # if defined(PERL_IMPLICIT_CONTEXT)
2696 # if defined(USE_5005THREADS)
2697 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2698 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2699 # else /* !USE_5005THREADS */
2700 # define PERLVARI(var,type,init) aTHX->var = init;
2701 # define PERLVARIC(var,type,init) aTHX->var = init;
2702 # endif /* USE_5005THREADS */
2704 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2705 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2707 # include "intrpvar.h"
2708 # ifndef USE_5005THREADS
2709 # include "thrdvar.h"
2716 # define PERLVAR(var,type)
2717 # define PERLVARA(var,n,type)
2718 # define PERLVARI(var,type,init) PL_##var = init;
2719 # define PERLVARIC(var,type,init) PL_##var = init;
2720 # include "intrpvar.h"
2721 # ifndef USE_5005THREADS
2722 # include "thrdvar.h"
2733 S_init_main_stash(pTHX)
2737 PL_curstash = PL_defstash = newHV();
2738 PL_curstname = newSVpvn("main",4);
2739 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2740 SvREFCNT_dec(GvHV(gv));
2741 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2743 HvNAME(PL_defstash) = savepv("main");
2744 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2745 GvMULTI_on(PL_incgv);
2746 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2747 GvMULTI_on(PL_hintgv);
2748 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2749 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2750 GvMULTI_on(PL_errgv);
2751 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2752 GvMULTI_on(PL_replgv);
2753 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2754 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2755 sv_setpvn(ERRSV, "", 0);
2756 PL_curstash = PL_defstash;
2757 CopSTASH_set(&PL_compiling, PL_defstash);
2758 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2759 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2760 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2761 /* We must init $/ before switches are processed. */
2762 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2766 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2770 char *cpp_discard_flag;
2776 PL_origfilename = savepv("-e");
2779 /* if find_script() returns, it returns a malloc()-ed value */
2780 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2782 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2783 char *s = scriptname + 8;
2784 *fdscript = atoi(s);
2788 scriptname = savepv(s + 1);
2789 Safefree(PL_origfilename);
2790 PL_origfilename = scriptname;
2795 CopFILE_free(PL_curcop);
2796 CopFILE_set(PL_curcop, PL_origfilename);
2797 if (strEQ(PL_origfilename,"-"))
2799 if (*fdscript >= 0) {
2800 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2801 # if defined(HAS_FCNTL) && defined(F_SETFD)
2803 /* ensure close-on-exec */
2804 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2807 else if (PL_preprocess) {
2808 char *cpp_cfg = CPPSTDIN;
2809 SV *cpp = newSVpvn("",0);
2810 SV *cmd = NEWSV(0,0);
2812 if (strEQ(cpp_cfg, "cppstdin"))
2813 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2814 sv_catpv(cpp, cpp_cfg);
2817 sv_catpvn(sv, "-I", 2);
2818 sv_catpv(sv,PRIVLIB_EXP);
2821 DEBUG_P(PerlIO_printf(Perl_debug_log,
2822 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2823 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2825 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2832 cpp_discard_flag = "";
2834 cpp_discard_flag = "-C";
2838 perl = os2_execname(aTHX);
2840 perl = PL_origargv[0];
2844 /* This strips off Perl comments which might interfere with
2845 the C pre-processor, including #!. #line directives are
2846 deliberately stripped to avoid confusion with Perl's version
2847 of #line. FWP played some golf with it so it will fit
2848 into VMS's 255 character buffer.
2851 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2853 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2855 Perl_sv_setpvf(aTHX_ cmd, "\
2856 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2857 perl, quote, code, quote, scriptname, cpp,
2858 cpp_discard_flag, sv, CPPMINUS);
2860 PL_doextract = FALSE;
2861 # ifdef IAMSUID /* actually, this is caught earlier */
2862 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2864 (void)seteuid(PL_uid); /* musn't stay setuid root */
2866 # ifdef HAS_SETREUID
2867 (void)setreuid((Uid_t)-1, PL_uid);
2869 # ifdef HAS_SETRESUID
2870 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2872 PerlProc_setuid(PL_uid);
2876 if (PerlProc_geteuid() != PL_uid)
2877 Perl_croak(aTHX_ "Can't do seteuid!\n");
2879 # endif /* IAMSUID */
2881 DEBUG_P(PerlIO_printf(Perl_debug_log,
2882 "PL_preprocess: cmd=\"%s\"\n",
2885 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2889 else if (!*scriptname) {
2890 forbid_setid("program input from stdin");
2891 PL_rsfp = PerlIO_stdin();
2894 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2895 # if defined(HAS_FCNTL) && defined(F_SETFD)
2897 /* ensure close-on-exec */
2898 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2903 # ifndef IAMSUID /* in case script is not readable before setuid */
2905 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2906 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2909 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2910 BIN_EXP, (int)PERL_REVISION,
2912 (int)PERL_SUBVERSION), PL_origargv);
2913 Perl_croak(aTHX_ "Can't do setuid\n");
2919 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2922 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2923 CopFILE(PL_curcop), Strerror(errno));
2929 * I_SYSSTATVFS HAS_FSTATVFS
2931 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2932 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2933 * here so that metaconfig picks them up. */
2937 S_fd_on_nosuid_fs(pTHX_ int fd)
2939 int check_okay = 0; /* able to do all the required sys/libcalls */
2940 int on_nosuid = 0; /* the fd is on a nosuid fs */
2942 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2943 * fstatvfs() is UNIX98.
2944 * fstatfs() is 4.3 BSD.
2945 * ustat()+getmnt() is pre-4.3 BSD.
2946 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2947 * an irrelevant filesystem while trying to reach the right one.
2950 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2952 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2953 defined(HAS_FSTATVFS)
2954 # define FD_ON_NOSUID_CHECK_OKAY
2955 struct statvfs stfs;
2957 check_okay = fstatvfs(fd, &stfs) == 0;
2958 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2959 # endif /* fstatvfs */
2961 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2962 defined(PERL_MOUNT_NOSUID) && \
2963 defined(HAS_FSTATFS) && \
2964 defined(HAS_STRUCT_STATFS) && \
2965 defined(HAS_STRUCT_STATFS_F_FLAGS)
2966 # define FD_ON_NOSUID_CHECK_OKAY
2969 check_okay = fstatfs(fd, &stfs) == 0;
2970 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2971 # endif /* fstatfs */
2973 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2974 defined(PERL_MOUNT_NOSUID) && \
2975 defined(HAS_FSTAT) && \
2976 defined(HAS_USTAT) && \
2977 defined(HAS_GETMNT) && \
2978 defined(HAS_STRUCT_FS_DATA) && \
2980 # define FD_ON_NOSUID_CHECK_OKAY
2983 if (fstat(fd, &fdst) == 0) {
2985 if (ustat(fdst.st_dev, &us) == 0) {
2987 /* NOSTAT_ONE here because we're not examining fields which
2988 * vary between that case and STAT_ONE. */
2989 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2990 size_t cmplen = sizeof(us.f_fname);
2991 if (sizeof(fsd.fd_req.path) < cmplen)
2992 cmplen = sizeof(fsd.fd_req.path);
2993 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2994 fdst.st_dev == fsd.fd_req.dev) {
2996 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
3002 # endif /* fstat+ustat+getmnt */
3004 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3005 defined(HAS_GETMNTENT) && \
3006 defined(HAS_HASMNTOPT) && \
3007 defined(MNTOPT_NOSUID)
3008 # define FD_ON_NOSUID_CHECK_OKAY
3009 FILE *mtab = fopen("/etc/mtab", "r");
3010 struct mntent *entry;
3013 if (mtab && (fstat(fd, &stb) == 0)) {
3014 while (entry = getmntent(mtab)) {
3015 if (stat(entry->mnt_dir, &fsb) == 0
3016 && fsb.st_dev == stb.st_dev)
3018 /* found the filesystem */
3020 if (hasmntopt(entry, MNTOPT_NOSUID))
3023 } /* A single fs may well fail its stat(). */
3028 # endif /* getmntent+hasmntopt */
3031 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
3034 #endif /* IAMSUID */
3037 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
3043 /* do we need to emulate setuid on scripts? */
3045 /* This code is for those BSD systems that have setuid #! scripts disabled
3046 * in the kernel because of a security problem. Merely defining DOSUID
3047 * in perl will not fix that problem, but if you have disabled setuid
3048 * scripts in the kernel, this will attempt to emulate setuid and setgid
3049 * on scripts that have those now-otherwise-useless bits set. The setuid
3050 * root version must be called suidperl or sperlN.NNN. If regular perl
3051 * discovers that it has opened a setuid script, it calls suidperl with
3052 * the same argv that it had. If suidperl finds that the script it has
3053 * just opened is NOT setuid root, it sets the effective uid back to the
3054 * uid. We don't just make perl setuid root because that loses the
3055 * effective uid we had before invoking perl, if it was different from the
3058 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3059 * be defined in suidperl only. suidperl must be setuid root. The
3060 * Configure script will set this up for you if you want it.
3066 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3067 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3068 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3073 #ifndef HAS_SETREUID
3074 /* On this access check to make sure the directories are readable,
3075 * there is actually a small window that the user could use to make
3076 * filename point to an accessible directory. So there is a faint
3077 * chance that someone could execute a setuid script down in a
3078 * non-accessible directory. I don't know what to do about that.
3079 * But I don't think it's too important. The manual lies when
3080 * it says access() is useful in setuid programs.
3082 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3083 Perl_croak(aTHX_ "Permission denied");
3085 /* If we can swap euid and uid, then we can determine access rights
3086 * with a simple stat of the file, and then compare device and
3087 * inode to make sure we did stat() on the same file we opened.
3088 * Then we just have to make sure he or she can execute it.
3095 setreuid(PL_euid,PL_uid) < 0
3098 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3101 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3102 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3103 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3104 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3105 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3106 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3107 Perl_croak(aTHX_ "Permission denied");
3109 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3110 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3111 (void)PerlIO_close(PL_rsfp);
3112 Perl_croak(aTHX_ "Permission denied\n");
3116 setreuid(PL_uid,PL_euid) < 0
3118 # if defined(HAS_SETRESUID)
3119 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3122 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3123 Perl_croak(aTHX_ "Can't reswap uid and euid");
3124 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3125 Perl_croak(aTHX_ "Permission denied\n");
3127 #endif /* HAS_SETREUID */
3128 #endif /* IAMSUID */
3130 if (!S_ISREG(PL_statbuf.st_mode))
3131 Perl_croak(aTHX_ "Permission denied");
3132 if (PL_statbuf.st_mode & S_IWOTH)
3133 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3134 PL_doswitches = FALSE; /* -s is insecure in suid */
3135 CopLINE_inc(PL_curcop);
3136 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3137 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3138 Perl_croak(aTHX_ "No #! line");
3139 s = SvPV(PL_linestr,n_a)+2;
3141 while (!isSPACE(*s)) s++;
3142 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3143 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3144 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3145 Perl_croak(aTHX_ "Not a perl script");
3146 while (*s == ' ' || *s == '\t') s++;
3148 * #! arg must be what we saw above. They can invoke it by
3149 * mentioning suidperl explicitly, but they may not add any strange
3150 * arguments beyond what #! says if they do invoke suidperl that way.
3152 len = strlen(validarg);
3153 if (strEQ(validarg," PHOOEY ") ||
3154 strnNE(s,validarg,len) || !isSPACE(s[len]))
3155 Perl_croak(aTHX_ "Args must match #! line");
3158 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3159 PL_euid == PL_statbuf.st_uid)
3161 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3162 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3163 #endif /* IAMSUID */
3165 if (PL_euid) { /* oops, we're not the setuid root perl */
3166 (void)PerlIO_close(PL_rsfp);
3169 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3170 (int)PERL_REVISION, (int)PERL_VERSION,
3171 (int)PERL_SUBVERSION), PL_origargv);
3173 Perl_croak(aTHX_ "Can't do setuid\n");
3176 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3178 (void)setegid(PL_statbuf.st_gid);
3181 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3183 #ifdef HAS_SETRESGID
3184 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3186 PerlProc_setgid(PL_statbuf.st_gid);
3190 if (PerlProc_getegid() != PL_statbuf.st_gid)
3191 Perl_croak(aTHX_ "Can't do setegid!\n");
3193 if (PL_statbuf.st_mode & S_ISUID) {
3194 if (PL_statbuf.st_uid != PL_euid)
3196 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3199 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3201 #ifdef HAS_SETRESUID
3202 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3204 PerlProc_setuid(PL_statbuf.st_uid);
3208 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3209 Perl_croak(aTHX_ "Can't do seteuid!\n");
3211 else if (PL_uid) { /* oops, mustn't run as root */
3213 (void)seteuid((Uid_t)PL_uid);
3216 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3218 #ifdef HAS_SETRESUID
3219 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3221 PerlProc_setuid((Uid_t)PL_uid);
3225 if (PerlProc_geteuid() != PL_uid)
3226 Perl_croak(aTHX_ "Can't do seteuid!\n");
3229 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3230 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3233 else if (PL_preprocess)
3234 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3235 else if (fdscript >= 0)
3236 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3238 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3240 /* We absolutely must clear out any saved ids here, so we */
3241 /* exec the real perl, substituting fd script for scriptname. */
3242 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3243 PerlIO_rewind(PL_rsfp);
3244 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3245 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3246 if (!PL_origargv[which])
3247 Perl_croak(aTHX_ "Permission denied");
3248 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3249 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3250 #if defined(HAS_FCNTL) && defined(F_SETFD)
3251 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3253 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3254 (int)PERL_REVISION, (int)PERL_VERSION,
3255 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3256 Perl_croak(aTHX_ "Can't do setuid\n");
3257 #endif /* IAMSUID */
3259 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3260 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3261 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3262 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3264 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3267 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3268 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3269 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3270 /* not set-id, must be wrapped */
3276 S_find_beginning(pTHX)
3278 register char *s, *s2;
3279 #ifdef MACOS_TRADITIONAL
3283 /* skip forward in input to the real script? */
3286 #ifdef MACOS_TRADITIONAL
3287 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3289 while (PL_doextract || gMacPerl_AlwaysExtract) {
3290 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3291 if (!gMacPerl_AlwaysExtract)
3292 Perl_croak(aTHX_ "No Perl script found in input\n");
3294 if (PL_doextract) /* require explicit override ? */
3295 if (!OverrideExtract(PL_origfilename))
3296 Perl_croak(aTHX_ "User aborted script\n");
3298 PL_doextract = FALSE;
3300 /* Pater peccavi, file does not have #! */
3301 PerlIO_rewind(PL_rsfp);
3306 while (PL_doextract) {
3307 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3308 Perl_croak(aTHX_ "No Perl script found in input\n");
3311 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3312 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3313 PL_doextract = FALSE;
3314 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3316 while (*s == ' ' || *s == '\t') s++;
3318 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3319 if (strnEQ(s2-4,"perl",4))
3321 while ((s = moreswitches(s)))
3324 #ifdef MACOS_TRADITIONAL
3325 /* We are always searching for the #!perl line in MacPerl,
3326 * so if we find it, still keep the line count correct
3327 * by counting lines we already skipped over
3329 for (; maclines > 0 ; maclines--)
3330 PerlIO_ungetc(PL_rsfp, '\n');
3334 /* gMacPerl_AlwaysExtract is false in MPW tool */
3335 } else if (gMacPerl_AlwaysExtract) {
3346 PL_uid = PerlProc_getuid();
3347 PL_euid = PerlProc_geteuid();
3348 PL_gid = PerlProc_getgid();
3349 PL_egid = PerlProc_getegid();
3351 PL_uid |= PL_gid << 16;
3352 PL_euid |= PL_egid << 16;
3354 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3358 S_forbid_setid(pTHX_ char *s)
3360 if (PL_euid != PL_uid)
3361 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3362 if (PL_egid != PL_gid)
3363 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3367 Perl_init_debugger(pTHX)
3369 HV *ostash = PL_curstash;
3371 PL_curstash = PL_debstash;
3372 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3373 AvREAL_off(PL_dbargs);
3374 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3375 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3376 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3377 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3378 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3379 sv_setiv(PL_DBsingle, 0);
3380 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3381 sv_setiv(PL_DBtrace, 0);
3382 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3383 sv_setiv(PL_DBsignal, 0);
3384 PL_curstash = ostash;
3387 #ifndef STRESS_REALLOC
3388 #define REASONABLE(size) (size)
3390 #define REASONABLE(size) (1) /* unreasonable */
3394 Perl_init_stacks(pTHX)
3396 /* start with 128-item stack and 8K cxstack */
3397 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3398 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3399 PL_curstackinfo->si_type = PERLSI_MAIN;
3400 PL_curstack = PL_curstackinfo->si_stack;
3401 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3403 PL_stack_base = AvARRAY(PL_curstack);
3404 PL_stack_sp = PL_stack_base;
3405 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3407 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3410 PL_tmps_max = REASONABLE(128);
3412 New(54,PL_markstack,REASONABLE(32),I32);
3413 PL_markstack_ptr = PL_markstack;
3414 PL_markstack_max = PL_markstack + REASONABLE(32);
3418 New(54,PL_scopestack,REASONABLE(32),I32);
3419 PL_scopestack_ix = 0;
3420 PL_scopestack_max = REASONABLE(32);
3422 New(54,PL_savestack,REASONABLE(128),ANY);
3423 PL_savestack_ix = 0;
3424 PL_savestack_max = REASONABLE(128);
3426 New(54,PL_retstack,REASONABLE(16),OP*);
3428 PL_retstack_max = REASONABLE(16);
3436 while (PL_curstackinfo->si_next)
3437 PL_curstackinfo = PL_curstackinfo->si_next;
3438 while (PL_curstackinfo) {
3439 PERL_SI *p = PL_curstackinfo->si_prev;
3440 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3441 Safefree(PL_curstackinfo->si_cxstack);
3442 Safefree(PL_curstackinfo);
3443 PL_curstackinfo = p;
3445 Safefree(PL_tmps_stack);
3446 Safefree(PL_markstack);
3447 Safefree(PL_scopestack);
3448 Safefree(PL_savestack);
3449 Safefree(PL_retstack);
3458 lex_start(PL_linestr);
3460 PL_subname = newSVpvn("main",4);
3464 S_init_predump_symbols(pTHX)
3469 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3470 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3471 GvMULTI_on(PL_stdingv);
3472 io = GvIOp(PL_stdingv);
3473 IoTYPE(io) = IoTYPE_RDONLY;
3474 IoIFP(io) = PerlIO_stdin();
3475 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3477 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3479 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3482 IoTYPE(io) = IoTYPE_WRONLY;
3483 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3485 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3487 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3489 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3490 GvMULTI_on(PL_stderrgv);
3491 io = GvIOp(PL_stderrgv);
3492 IoTYPE(io) = IoTYPE_WRONLY;
3493 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3494 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3496 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3498 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3501 Safefree(PL_osname);
3502 PL_osname = savepv(OSNAME);
3506 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3509 argc--,argv++; /* skip name of script */
3510 if (PL_doswitches) {
3511 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3514 if (argv[0][1] == '-' && !argv[0][2]) {
3518 if ((s = strchr(argv[0], '='))) {
3520 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3523 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3526 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3527 GvMULTI_on(PL_argvgv);
3528 (void)gv_AVadd(PL_argvgv);
3529 av_clear(GvAVn(PL_argvgv));
3530 for (; argc > 0; argc--,argv++) {
3531 SV *sv = newSVpv(argv[0],0);
3532 av_push(GvAVn(PL_argvgv),sv);
3533 if (PL_widesyscalls)
3534 (void)sv_utf8_decode(sv);
3539 #ifdef HAS_PROCSELFEXE
3540 /* This is a function so that we don't hold on to MAXPATHLEN
3541 bytes of stack longer than necessary
3544 S_procself_val(pTHX_ SV *sv, char *arg0)
3546 char buf[MAXPATHLEN];
3547 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3549 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3550 includes a spurious NUL which will cause $^X to fail in system
3551 or backticks (this will prevent extensions from being built and
3552 many tests from working). readlink is not meant to add a NUL.
3553 Normal readlink works fine.
3555 if (len > 0 && buf[len-1] == '\0') {
3559 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3560 returning the text "unknown" from the readlink rather than the path
3561 to the executable (or returning an error from the readlink). Any valid
3562 path has a '/' in it somewhere, so use that to validate the result.
3563 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3565 if (len > 0 && memchr(buf, '/', len)) {
3566 sv_setpvn(sv,buf,len);
3572 #endif /* HAS_PROCSELFEXE */
3575 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3581 PL_toptarget = NEWSV(0,0);
3582 sv_upgrade(PL_toptarget, SVt_PVFM);
3583 sv_setpvn(PL_toptarget, "", 0);
3584 PL_bodytarget = NEWSV(0,0);
3585 sv_upgrade(PL_bodytarget, SVt_PVFM);
3586 sv_setpvn(PL_bodytarget, "", 0);
3587 PL_formtarget = PL_bodytarget;
3591 init_argv_symbols(argc,argv);
3593 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3594 #ifdef MACOS_TRADITIONAL
3595 /* $0 is not majick on a Mac */
3596 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3598 sv_setpv(GvSV(tmpgv),PL_origfilename);
3599 magicname("0", "0", 1);
3602 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3603 #ifdef HAS_PROCSELFEXE
3604 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3607 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3609 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3613 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3615 GvMULTI_on(PL_envgv);
3616 hv = GvHVn(PL_envgv);
3617 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3618 #ifdef USE_ENVIRON_ARRAY
3619 /* Note that if the supplied env parameter is actually a copy
3620 of the global environ then it may now point to free'd memory
3621 if the environment has been modified since. To avoid this
3622 problem we treat env==NULL as meaning 'use the default'
3627 # ifdef USE_ITHREADS
3628 && PL_curinterp == aTHX
3632 environ[0] = Nullch;
3635 for (; *env; env++) {
3636 if (!(s = strchr(*env,'=')))
3643 sv = newSVpv(s+1, 0);
3644 (void)hv_store(hv, *env, s - *env, sv, 0);
3648 #endif /* USE_ENVIRON_ARRAY */
3651 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3652 SvREADONLY_off(GvSV(tmpgv));
3653 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3654 SvREADONLY_on(GvSV(tmpgv));
3656 #ifdef THREADS_HAVE_PIDS
3657 PL_ppid = (IV)getppid();
3660 /* touch @F array to prevent spurious warnings 20020415 MJD */
3662 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3664 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3665 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3666 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3670 S_init_perllib(pTHX)
3675 s = PerlEnv_getenv("PERL5LIB");
3677 incpush(s, TRUE, TRUE);
3679 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3681 /* Treat PERL5?LIB as a possible search list logical name -- the
3682 * "natural" VMS idiom for a Unix path string. We allow each
3683 * element to be a set of |-separated directories for compatibility.
3687 if (my_trnlnm("PERL5LIB",buf,0))
3688 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3690 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3694 /* Use the ~-expanded versions of APPLLIB (undocumented),
3695 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3698 incpush(APPLLIB_EXP, TRUE, TRUE);
3702 incpush(ARCHLIB_EXP, FALSE, FALSE);
3704 #ifdef MACOS_TRADITIONAL
3707 SV * privdir = NEWSV(55, 0);
3708 char * macperl = PerlEnv_getenv("MACPERL");
3713 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3714 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3715 incpush(SvPVX(privdir), TRUE, FALSE);
3716 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3717 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3718 incpush(SvPVX(privdir), TRUE, FALSE);
3720 SvREFCNT_dec(privdir);
3723 incpush(":", FALSE, FALSE);
3726 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3729 incpush(PRIVLIB_EXP, TRUE, FALSE);
3731 incpush(PRIVLIB_EXP, FALSE, FALSE);
3735 /* sitearch is always relative to sitelib on Windows for
3736 * DLL-based path intuition to work correctly */
3737 # if !defined(WIN32)
3738 incpush(SITEARCH_EXP, FALSE, FALSE);
3744 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3746 incpush(SITELIB_EXP, FALSE, FALSE);
3750 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3751 incpush(SITELIB_STEM, FALSE, TRUE);
3754 #ifdef PERL_VENDORARCH_EXP
3755 /* vendorarch is always relative to vendorlib on Windows for
3756 * DLL-based path intuition to work correctly */
3757 # if !defined(WIN32)
3758 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3762 #ifdef PERL_VENDORLIB_EXP
3764 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3766 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3770 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3771 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3774 #ifdef PERL_OTHERLIBDIRS
3775 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3779 incpush(".", FALSE, FALSE);
3780 #endif /* MACOS_TRADITIONAL */
3783 #if defined(DOSISH) || defined(EPOC)
3784 # define PERLLIB_SEP ';'
3787 # define PERLLIB_SEP '|'
3789 # if defined(MACOS_TRADITIONAL)
3790 # define PERLLIB_SEP ','
3792 # define PERLLIB_SEP ':'
3796 #ifndef PERLLIB_MANGLE
3797 # define PERLLIB_MANGLE(s,n) (s)
3801 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3803 SV *subdir = Nullsv;
3808 if (addsubdirs || addoldvers) {
3809 subdir = sv_newmortal();
3812 /* Break at all separators */
3814 SV *libdir = NEWSV(55,0);
3817 /* skip any consecutive separators */
3818 while ( *p == PERLLIB_SEP ) {
3819 /* Uncomment the next line for PATH semantics */
3820 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3824 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3825 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3830 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3831 p = Nullch; /* break out */
3833 #ifdef MACOS_TRADITIONAL
3834 if (!strchr(SvPVX(libdir), ':')) {
3837 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
3839 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3840 sv_catpv(libdir, ":");
3844 * BEFORE pushing libdir onto @INC we may first push version- and
3845 * archname-specific sub-directories.
3847 if (addsubdirs || addoldvers) {
3848 #ifdef PERL_INC_VERSION_LIST
3849 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3850 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3851 const char **incver;
3858 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3860 while (unix[len-1] == '/') len--; /* Cosmetic */
3861 sv_usepvn(libdir,unix,len);
3864 PerlIO_printf(Perl_error_log,
3865 "Failed to unixify @INC element \"%s\"\n",
3869 #ifdef MACOS_TRADITIONAL
3870 #define PERL_AV_SUFFIX_FMT ""
3871 #define PERL_ARCH_FMT "%s:"
3872 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3874 #define PERL_AV_SUFFIX_FMT "/"
3875 #define PERL_ARCH_FMT "/%s"
3876 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3878 /* .../version/archname if -d .../version/archname */
3879 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3881 (int)PERL_REVISION, (int)PERL_VERSION,
3882 (int)PERL_SUBVERSION, ARCHNAME);
3883 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3884 S_ISDIR(tmpstatbuf.st_mode))
3885 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3887 /* .../version if -d .../version */
3888 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3889 (int)PERL_REVISION, (int)PERL_VERSION,
3890 (int)PERL_SUBVERSION);
3891 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3892 S_ISDIR(tmpstatbuf.st_mode))
3893 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3895 /* .../archname if -d .../archname */
3896 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3897 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3898 S_ISDIR(tmpstatbuf.st_mode))
3899 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3902 #ifdef PERL_INC_VERSION_LIST
3904 for (incver = incverlist; *incver; incver++) {
3905 /* .../xxx if -d .../xxx */
3906 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3907 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3908 S_ISDIR(tmpstatbuf.st_mode))
3909 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3915 /* finally push this lib directory on the end of @INC */
3916 av_push(GvAVn(PL_incgv), libdir);
3920 #ifdef USE_5005THREADS
3921 STATIC struct perl_thread *
3922 S_init_main_thread(pTHX)
3924 #if !defined(PERL_IMPLICIT_CONTEXT)
3925 struct perl_thread *thr;
3929 Newz(53, thr, 1, struct perl_thread);
3930 PL_curcop = &PL_compiling;
3931 thr->interp = PERL_GET_INTERP;
3932 thr->cvcache = newHV();
3933 thr->threadsv = newAV();
3934 /* thr->threadsvp is set when find_threadsv is called */
3935 thr->specific = newAV();
3936 thr->flags = THRf_R_JOINABLE;
3937 MUTEX_INIT(&thr->mutex);
3938 /* Handcraft thrsv similarly to mess_sv */
3939 New(53, PL_thrsv, 1, SV);
3940 Newz(53, xpv, 1, XPV);
3941 SvFLAGS(PL_thrsv) = SVt_PV;
3942 SvANY(PL_thrsv) = (void*)xpv;
3943 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3944 SvPVX(PL_thrsv) = (char*)thr;
3945 SvCUR_set(PL_thrsv, sizeof(thr));
3946 SvLEN_set(PL_thrsv, sizeof(thr));
3947 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3948 thr->oursv = PL_thrsv;
3949 PL_chopset = " \n-";
3952 MUTEX_LOCK(&PL_threads_mutex);
3958 MUTEX_UNLOCK(&PL_threads_mutex);
3960 #ifdef HAVE_THREAD_INTERN
3961 Perl_init_thread_intern(thr);
3964 #ifdef SET_THREAD_SELF
3965 SET_THREAD_SELF(thr);
3967 thr->self = pthread_self();
3968 #endif /* SET_THREAD_SELF */
3972 * These must come after the thread self setting
3973 * because sv_setpvn does SvTAINT and the taint
3974 * fields thread selfness being set.
3976 PL_toptarget = NEWSV(0,0);
3977 sv_upgrade(PL_toptarget, SVt_PVFM);
3978 sv_setpvn(PL_toptarget, "", 0);
3979 PL_bodytarget = NEWSV(0,0);
3980 sv_upgrade(PL_bodytarget, SVt_PVFM);
3981 sv_setpvn(PL_bodytarget, "", 0);
3982 PL_formtarget = PL_bodytarget;
3983 thr->errsv = newSVpvn("", 0);
3984 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3987 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3988 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3989 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3990 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3991 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3992 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3994 PL_reginterp_cnt = 0;
3998 #endif /* USE_5005THREADS */
4001 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4004 line_t oldline = CopLINE(PL_curcop);
4010 while (AvFILL(paramList) >= 0) {
4011 cv = (CV*)av_shift(paramList);
4013 if (paramList == PL_beginav) {
4014 /* save PL_beginav for compiler */
4015 if (! PL_beginav_save)
4016 PL_beginav_save = newAV();
4017 av_push(PL_beginav_save, (SV*)cv);
4019 else if (paramList == PL_checkav) {
4020 /* save PL_checkav for compiler */
4021 if (! PL_checkav_save)
4022 PL_checkav_save = newAV();
4023 av_push(PL_checkav_save, (SV*)cv);
4028 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4029 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
4035 #ifndef PERL_FLEXIBLE_EXCEPTIONS
4039 (void)SvPV(atsv, len);
4042 PL_curcop = &PL_compiling;
4043 CopLINE_set(PL_curcop, oldline);
4044 if (paramList == PL_beginav)
4045 sv_catpv(atsv, "BEGIN failed--compilation aborted");
4047 Perl_sv_catpvf(aTHX_ atsv,
4048 "%s failed--call queue aborted",
4049 paramList == PL_checkav ? "CHECK"
4050 : paramList == PL_initav ? "INIT"
4052 while (PL_scopestack_ix > oldscope)
4055 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
4062 /* my_exit() was called */
4063 while (PL_scopestack_ix > oldscope)
4066 PL_curstash = PL_defstash;
4067 PL_curcop = &PL_compiling;
4068 CopLINE_set(PL_curcop, oldline);
4070 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4071 if (paramList == PL_beginav)
4072 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4074 Perl_croak(aTHX_ "%s failed--call queue aborted",
4075 paramList == PL_checkav ? "CHECK"
4076 : paramList == PL_initav ? "INIT"
4083 PL_curcop = &PL_compiling;
4084 CopLINE_set(PL_curcop, oldline);
4087 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4095 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4097 S_vcall_list_body(pTHX_ va_list args)
4099 CV *cv = va_arg(args, CV*);
4100 return call_list_body(cv);
4105 S_call_list_body(pTHX_ CV *cv)
4107 PUSHMARK(PL_stack_sp);
4108 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4113 Perl_my_exit(pTHX_ U32 status)
4115 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4116 thr, (unsigned long) status));
4125 STATUS_NATIVE_SET(status);
4132 Perl_my_failure_exit(pTHX)
4135 if (vaxc$errno & 1) {
4136 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4137 STATUS_NATIVE_SET(44);
4140 if (!vaxc$errno && errno) /* unlikely */
4141 STATUS_NATIVE_SET(44);
4143 STATUS_NATIVE_SET(vaxc$errno);
4148 STATUS_POSIX_SET(errno);
4150 exitstatus = STATUS_POSIX >> 8;
4151 if (exitstatus & 255)
4152 STATUS_POSIX_SET(exitstatus);
4154 STATUS_POSIX_SET(255);
4161 S_my_exit_jump(pTHX)
4163 register PERL_CONTEXT *cx;
4168 SvREFCNT_dec(PL_e_script);
4169 PL_e_script = Nullsv;
4172 POPSTACK_TO(PL_mainstack);
4173 if (cxstack_ix >= 0) {
4176 POPBLOCK(cx,PL_curpm);
4184 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4187 p = SvPVX(PL_e_script);
4188 nl = strchr(p, '\n');
4189 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4191 filter_del(read_e_script);
4194 sv_catpvn(buf_sv, p, nl-p);
4195 sv_chop(PL_e_script, nl);