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. */
41 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
42 char *getenv (char *); /* Usually in <stdlib.h> */
45 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
53 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
59 #if defined(USE_5005THREADS)
60 # define INIT_TLS_AND_INTERP \
62 if (!PL_curinterp) { \
63 PERL_SET_INTERP(my_perl); \
69 # if defined(USE_ITHREADS)
70 # define INIT_TLS_AND_INTERP \
72 if (!PL_curinterp) { \
73 PERL_SET_INTERP(my_perl); \
76 PERL_SET_THX(my_perl); \
80 PERL_SET_THX(my_perl); \
84 # define INIT_TLS_AND_INTERP \
86 if (!PL_curinterp) { \
87 PERL_SET_INTERP(my_perl); \
89 PERL_SET_THX(my_perl); \
94 #ifdef PERL_IMPLICIT_SYS
96 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
97 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
98 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
99 struct IPerlDir* ipD, struct IPerlSock* ipS,
100 struct IPerlProc* ipP)
102 PerlInterpreter *my_perl;
103 /* New() needs interpreter, so call malloc() instead */
104 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
106 Zero(my_perl, 1, PerlInterpreter);
122 =head1 Embedding Functions
124 =for apidoc perl_alloc
126 Allocates a new Perl interpreter. See L<perlembed>.
134 PerlInterpreter *my_perl;
135 #ifdef USE_5005THREADS
139 /* New() needs interpreter, so call malloc() instead */
140 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
143 Zero(my_perl, 1, PerlInterpreter);
146 #endif /* PERL_IMPLICIT_SYS */
149 =for apidoc perl_construct
151 Initializes a new Perl interpreter. See L<perlembed>.
157 perl_construct(pTHXx)
159 #ifdef USE_5005THREADS
161 struct perl_thread *thr = NULL;
162 #endif /* FAKE_THREADS */
163 #endif /* USE_5005THREADS */
167 PL_perl_destruct_level = 1;
169 if (PL_perl_destruct_level > 0)
173 /* Init the real globals (and main thread)? */
175 #ifdef USE_5005THREADS
176 MUTEX_INIT(&PL_sv_mutex);
178 * Safe to use basic SV functions from now on (though
179 * not things like mortals or tainting yet).
181 MUTEX_INIT(&PL_eval_mutex);
182 COND_INIT(&PL_eval_cond);
183 MUTEX_INIT(&PL_threads_mutex);
184 COND_INIT(&PL_nthreads_cond);
185 # ifdef EMULATE_ATOMIC_REFCOUNTS
186 MUTEX_INIT(&PL_svref_mutex);
187 # endif /* EMULATE_ATOMIC_REFCOUNTS */
189 MUTEX_INIT(&PL_cred_mutex);
190 MUTEX_INIT(&PL_sv_lock_mutex);
191 MUTEX_INIT(&PL_fdpid_mutex);
193 thr = init_main_thread();
194 #endif /* USE_5005THREADS */
196 #ifdef PERL_FLEXIBLE_EXCEPTIONS
197 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
200 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
202 PL_linestr = NEWSV(65,79);
203 sv_upgrade(PL_linestr,SVt_PVIV);
205 if (!SvREADONLY(&PL_sv_undef)) {
206 /* set read-only and try to insure than we wont see REFCNT==0
209 SvREADONLY_on(&PL_sv_undef);
210 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
212 sv_setpv(&PL_sv_no,PL_No);
214 SvREADONLY_on(&PL_sv_no);
215 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
217 sv_setpv(&PL_sv_yes,PL_Yes);
219 SvREADONLY_on(&PL_sv_yes);
220 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
223 PL_sighandlerp = Perl_sighandler;
224 PL_pidstatus = newHV();
227 PL_rs = newSVpvn("\n", 1);
232 PL_lex_state = LEX_NOTPARSING;
238 SET_NUMERIC_STANDARD();
242 PL_patchlevel = NEWSV(0,4);
243 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
244 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
245 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
246 s = (U8*)SvPVX(PL_patchlevel);
247 /* Build version strings using "native" characters */
248 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
249 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
250 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
252 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
253 SvPOK_on(PL_patchlevel);
254 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
255 + ((NV)PERL_VERSION / (NV)1000)
256 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
257 + ((NV)PERL_SUBVERSION / (NV)1000000)
260 SvNOK_on(PL_patchlevel); /* dual valued */
261 SvUTF8_on(PL_patchlevel);
262 SvREADONLY_on(PL_patchlevel);
265 #if defined(LOCAL_PATCH_COUNT)
266 PL_localpatches = local_patches; /* For possible -v */
269 #ifdef HAVE_INTERP_INTERN
273 PerlIO_init(aTHX); /* Hook to IO system */
275 PL_fdpid = newAV(); /* for remembering popen pids by fd */
276 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
277 PL_errors = newSVpvn("",0);
278 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
279 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
280 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
282 PL_regex_padav = newAV();
283 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
284 PL_regex_pad = AvARRAY(PL_regex_padav);
286 #ifdef USE_REENTRANT_API
287 Perl_reentrant_init(aTHX);
290 /* Note that strtab is a rather special HV. Assumptions are made
291 about not iterating on it, and not adding tie magic to it.
292 It is properly deallocated in perl_destruct() */
295 #ifdef USE_5005THREADS
296 MUTEX_INIT(&PL_strtab_mutex);
298 HvSHAREKEYS_off(PL_strtab); /* mandatory */
299 hv_ksplit(PL_strtab, 512);
301 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
302 _dyld_lookup_and_bind
303 ("__environ", (unsigned long *) &environ_pointer, NULL);
306 #ifdef USE_ENVIRON_ARRAY
307 PL_origenviron = environ;
310 /* Use sysconf(_SC_CLK_TCK) if available, if not
311 * available or if the sysconf() fails, use the HZ. */
312 #if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
313 PL_clocktick = sysconf(_SC_CLK_TCK);
314 if (PL_clocktick <= 0)
322 =for apidoc nothreadhook
324 Stub that provides thread hook for perl_destruct when there are
331 Perl_nothreadhook(pTHX)
337 =for apidoc perl_destruct
339 Shuts down a Perl interpreter. See L<perlembed>.
347 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
349 #ifdef USE_5005THREADS
352 #endif /* USE_5005THREADS */
354 /* wait for all pseudo-forked children to finish */
355 PERL_WAIT_FOR_CHILDREN;
357 #ifdef USE_5005THREADS
359 /* Pass 1 on any remaining threads: detach joinables, join zombies */
361 MUTEX_LOCK(&PL_threads_mutex);
362 DEBUG_S(PerlIO_printf(Perl_debug_log,
363 "perl_destruct: waiting for %d threads...\n",
365 for (t = thr->next; t != thr; t = t->next) {
366 MUTEX_LOCK(&t->mutex);
367 switch (ThrSTATE(t)) {
370 DEBUG_S(PerlIO_printf(Perl_debug_log,
371 "perl_destruct: joining zombie %p\n", t));
372 ThrSETSTATE(t, THRf_DEAD);
373 MUTEX_UNLOCK(&t->mutex);
376 * The SvREFCNT_dec below may take a long time (e.g. av
377 * may contain an object scalar whose destructor gets
378 * called) so we have to unlock threads_mutex and start
381 MUTEX_UNLOCK(&PL_threads_mutex);
383 SvREFCNT_dec((SV*)av);
384 DEBUG_S(PerlIO_printf(Perl_debug_log,
385 "perl_destruct: joined zombie %p OK\n", t));
387 case THRf_R_JOINABLE:
388 DEBUG_S(PerlIO_printf(Perl_debug_log,
389 "perl_destruct: detaching thread %p\n", t));
390 ThrSETSTATE(t, THRf_R_DETACHED);
392 * We unlock threads_mutex and t->mutex in the opposite order
393 * from which we locked them just so that DETACH won't
394 * deadlock if it panics. It's only a breach of good style
395 * not a bug since they are unlocks not locks.
397 MUTEX_UNLOCK(&PL_threads_mutex);
399 MUTEX_UNLOCK(&t->mutex);
402 DEBUG_S(PerlIO_printf(Perl_debug_log,
403 "perl_destruct: ignoring %p (state %u)\n",
405 MUTEX_UNLOCK(&t->mutex);
406 /* fall through and out */
409 /* We leave the above "Pass 1" loop with threads_mutex still locked */
411 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
412 while (PL_nthreads > 1)
414 DEBUG_S(PerlIO_printf(Perl_debug_log,
415 "perl_destruct: final wait for %d threads\n",
417 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
419 /* At this point, we're the last thread */
420 MUTEX_UNLOCK(&PL_threads_mutex);
421 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
422 MUTEX_DESTROY(&PL_threads_mutex);
423 COND_DESTROY(&PL_nthreads_cond);
425 #endif /* !defined(FAKE_THREADS) */
426 #endif /* USE_5005THREADS */
428 destruct_level = PL_perl_destruct_level;
432 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
434 if (destruct_level < i)
441 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
446 if (PL_endav && !PL_minus_c)
447 call_list(PL_scopestack_ix, PL_endav);
453 /* Need to flush since END blocks can produce output */
456 if (CALL_FPTR(PL_threadhook)(aTHX)) {
457 /* Threads hook has vetoed further cleanup */
458 return STATUS_NATIVE_EXPORT;
461 /* We must account for everything. */
463 /* Destroy the main CV and syntax tree */
466 op_free(PL_main_root);
467 PL_main_root = Nullop;
469 PL_curcop = &PL_compiling;
470 PL_main_start = Nullop;
471 SvREFCNT_dec(PL_main_cv);
475 /* Tell PerlIO we are about to tear things apart in case
476 we have layers which are using resources that should
480 PerlIO_destruct(aTHX);
482 if (PL_sv_objcount) {
484 * Try to destruct global references. We do this first so that the
485 * destructors and destructees still exist. Some sv's might remain.
486 * Non-referenced objects are on their own.
491 /* unhook hooks which will soon be, or use, destroyed data */
492 SvREFCNT_dec(PL_warnhook);
493 PL_warnhook = Nullsv;
494 SvREFCNT_dec(PL_diehook);
497 /* call exit list functions */
498 while (PL_exitlistlen-- > 0)
499 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
501 Safefree(PL_exitlist);
503 if (destruct_level == 0){
505 DEBUG_P(debprofdump());
507 #if defined(PERLIO_LAYERS)
508 /* No more IO - including error messages ! */
509 PerlIO_cleanup(aTHX);
512 /* The exit() function will do everything that needs doing. */
513 return STATUS_NATIVE_EXPORT;
516 /* jettison our possibly duplicated environment */
517 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
518 * so we certainly shouldn't free it here
520 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
521 if (environ != PL_origenviron
523 /* only main thread can free environ[0] contents */
524 && PL_curinterp == aTHX
530 for (i = 0; environ[i]; i++)
531 safesysfree(environ[i]);
533 /* Must use safesysfree() when working with environ. */
534 safesysfree(environ);
536 environ = PL_origenviron;
541 /* the syntax tree is shared between clones
542 * so op_free(PL_main_root) only ReREFCNT_dec's
543 * REGEXPs in the parent interpreter
544 * we need to manually ReREFCNT_dec for the clones
547 I32 i = AvFILLp(PL_regex_padav) + 1;
548 SV **ary = AvARRAY(PL_regex_padav);
552 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
554 if (SvFLAGS(resv) & SVf_BREAK) {
555 /* this is PL_reg_curpm, already freed
556 * flag is set in regexec.c:S_regtry
558 SvFLAGS(resv) &= ~SVf_BREAK;
560 else if(SvREPADTMP(resv)) {
561 SvREPADTMP_off(resv);
568 SvREFCNT_dec(PL_regex_padav);
569 PL_regex_padav = Nullav;
573 /* loosen bonds of global variables */
576 (void)PerlIO_close(PL_rsfp);
580 /* Filters for program text */
581 SvREFCNT_dec(PL_rsfp_filters);
582 PL_rsfp_filters = Nullav;
585 PL_preprocess = FALSE;
591 PL_doswitches = FALSE;
592 PL_dowarn = G_WARN_OFF;
593 PL_doextract = FALSE;
594 PL_sawampersand = FALSE; /* must save all match strings */
597 Safefree(PL_inplace);
599 SvREFCNT_dec(PL_patchlevel);
602 SvREFCNT_dec(PL_e_script);
603 PL_e_script = Nullsv;
606 while (--PL_origargc >= 0) {
607 Safefree(PL_origargv[PL_origargc]);
609 Safefree(PL_origargv);
611 /* magical thingies */
613 SvREFCNT_dec(PL_ofs_sv); /* $, */
616 SvREFCNT_dec(PL_ors_sv); /* $\ */
619 SvREFCNT_dec(PL_rs); /* $/ */
622 PL_multiline = 0; /* $* */
623 Safefree(PL_osname); /* $^O */
626 SvREFCNT_dec(PL_statname);
627 PL_statname = Nullsv;
630 /* defgv, aka *_ should be taken care of elsewhere */
632 /* clean up after study() */
633 SvREFCNT_dec(PL_lastscream);
634 PL_lastscream = Nullsv;
635 Safefree(PL_screamfirst);
637 Safefree(PL_screamnext);
641 Safefree(PL_efloatbuf);
642 PL_efloatbuf = Nullch;
645 /* startup and shutdown function lists */
646 SvREFCNT_dec(PL_beginav);
647 SvREFCNT_dec(PL_beginav_save);
648 SvREFCNT_dec(PL_endav);
649 SvREFCNT_dec(PL_checkav);
650 SvREFCNT_dec(PL_checkav_save);
651 SvREFCNT_dec(PL_initav);
653 PL_beginav_save = Nullav;
656 PL_checkav_save = Nullav;
659 /* shortcuts just get cleared */
665 PL_argvoutgv = Nullgv;
667 PL_stderrgv = Nullgv;
668 PL_last_in_gv = Nullgv;
670 PL_debstash = Nullhv;
672 /* reset so print() ends up where we expect */
675 SvREFCNT_dec(PL_argvout_stack);
676 PL_argvout_stack = Nullav;
678 SvREFCNT_dec(PL_modglobal);
679 PL_modglobal = Nullhv;
680 SvREFCNT_dec(PL_preambleav);
681 PL_preambleav = Nullav;
682 SvREFCNT_dec(PL_subname);
684 SvREFCNT_dec(PL_linestr);
686 SvREFCNT_dec(PL_pidstatus);
687 PL_pidstatus = Nullhv;
688 SvREFCNT_dec(PL_toptarget);
689 PL_toptarget = Nullsv;
690 SvREFCNT_dec(PL_bodytarget);
691 PL_bodytarget = Nullsv;
692 PL_formtarget = Nullsv;
694 /* free locale stuff */
695 #ifdef USE_LOCALE_COLLATE
696 Safefree(PL_collation_name);
697 PL_collation_name = Nullch;
700 #ifdef USE_LOCALE_NUMERIC
701 Safefree(PL_numeric_name);
702 PL_numeric_name = Nullch;
703 SvREFCNT_dec(PL_numeric_radix_sv);
706 /* clear utf8 character classes */
707 SvREFCNT_dec(PL_utf8_alnum);
708 SvREFCNT_dec(PL_utf8_alnumc);
709 SvREFCNT_dec(PL_utf8_ascii);
710 SvREFCNT_dec(PL_utf8_alpha);
711 SvREFCNT_dec(PL_utf8_space);
712 SvREFCNT_dec(PL_utf8_cntrl);
713 SvREFCNT_dec(PL_utf8_graph);
714 SvREFCNT_dec(PL_utf8_digit);
715 SvREFCNT_dec(PL_utf8_upper);
716 SvREFCNT_dec(PL_utf8_lower);
717 SvREFCNT_dec(PL_utf8_print);
718 SvREFCNT_dec(PL_utf8_punct);
719 SvREFCNT_dec(PL_utf8_xdigit);
720 SvREFCNT_dec(PL_utf8_mark);
721 SvREFCNT_dec(PL_utf8_toupper);
722 SvREFCNT_dec(PL_utf8_totitle);
723 SvREFCNT_dec(PL_utf8_tolower);
724 SvREFCNT_dec(PL_utf8_tofold);
725 SvREFCNT_dec(PL_utf8_idstart);
726 SvREFCNT_dec(PL_utf8_idcont);
727 PL_utf8_alnum = Nullsv;
728 PL_utf8_alnumc = Nullsv;
729 PL_utf8_ascii = Nullsv;
730 PL_utf8_alpha = Nullsv;
731 PL_utf8_space = Nullsv;
732 PL_utf8_cntrl = Nullsv;
733 PL_utf8_graph = Nullsv;
734 PL_utf8_digit = Nullsv;
735 PL_utf8_upper = Nullsv;
736 PL_utf8_lower = Nullsv;
737 PL_utf8_print = Nullsv;
738 PL_utf8_punct = Nullsv;
739 PL_utf8_xdigit = Nullsv;
740 PL_utf8_mark = Nullsv;
741 PL_utf8_toupper = Nullsv;
742 PL_utf8_totitle = Nullsv;
743 PL_utf8_tolower = Nullsv;
744 PL_utf8_tofold = Nullsv;
745 PL_utf8_idstart = Nullsv;
746 PL_utf8_idcont = Nullsv;
748 if (!specialWARN(PL_compiling.cop_warnings))
749 SvREFCNT_dec(PL_compiling.cop_warnings);
750 PL_compiling.cop_warnings = Nullsv;
751 if (!specialCopIO(PL_compiling.cop_io))
752 SvREFCNT_dec(PL_compiling.cop_io);
753 PL_compiling.cop_io = Nullsv;
754 CopFILE_free(&PL_compiling);
755 CopSTASH_free(&PL_compiling);
757 /* Prepare to destruct main symbol table. */
762 SvREFCNT_dec(PL_curstname);
763 PL_curstname = Nullsv;
765 /* clear queued errors */
766 SvREFCNT_dec(PL_errors);
770 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
771 if (PL_scopestack_ix != 0)
772 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
773 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
774 (long)PL_scopestack_ix);
775 if (PL_savestack_ix != 0)
776 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
777 "Unbalanced saves: %ld more saves than restores\n",
778 (long)PL_savestack_ix);
779 if (PL_tmps_floor != -1)
780 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
781 (long)PL_tmps_floor + 1);
782 if (cxstack_ix != -1)
783 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
784 (long)cxstack_ix + 1);
787 /* Now absolutely destruct everything, somehow or other, loops or no. */
788 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
789 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
791 /* the 2 is for PL_fdpid and PL_strtab */
792 while (PL_sv_count > 2 && sv_clean_all())
795 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
796 SvFLAGS(PL_fdpid) |= SVt_PVAV;
797 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
798 SvFLAGS(PL_strtab) |= SVt_PVHV;
800 AvREAL_off(PL_fdpid); /* no surviving entries */
801 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
804 #ifdef HAVE_INTERP_INTERN
808 /* Destruct the global string table. */
810 /* Yell and reset the HeVAL() slots that are still holding refcounts,
811 * so that sv_free() won't fail on them.
819 max = HvMAX(PL_strtab);
820 array = HvARRAY(PL_strtab);
823 if (hent && ckWARN_d(WARN_INTERNAL)) {
824 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
825 "Unbalanced string table refcount: (%d) for \"%s\"",
826 HeVAL(hent) - Nullsv, HeKEY(hent));
827 HeVAL(hent) = Nullsv;
837 SvREFCNT_dec(PL_strtab);
840 /* free the pointer table used for cloning */
841 ptr_table_free(PL_ptr_table);
844 /* free special SVs */
846 SvREFCNT(&PL_sv_yes) = 0;
847 sv_clear(&PL_sv_yes);
848 SvANY(&PL_sv_yes) = NULL;
849 SvFLAGS(&PL_sv_yes) = 0;
851 SvREFCNT(&PL_sv_no) = 0;
853 SvANY(&PL_sv_no) = NULL;
854 SvFLAGS(&PL_sv_no) = 0;
858 for (i=0; i<=2; i++) {
859 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
860 sv_clear(PERL_DEBUG_PAD(i));
861 SvANY(PERL_DEBUG_PAD(i)) = NULL;
862 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
866 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
867 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
869 #if defined(PERLIO_LAYERS)
870 /* No more IO - including error messages ! */
871 PerlIO_cleanup(aTHX);
874 /* sv_undef needs to stay immortal until after PerlIO_cleanup
875 as currently layers use it rather than Nullsv as a marker
876 for no arg - and will try and SvREFCNT_dec it.
878 SvREFCNT(&PL_sv_undef) = 0;
879 SvREADONLY_off(&PL_sv_undef);
881 Safefree(PL_origfilename);
882 Safefree(PL_reg_start_tmp);
884 Safefree(PL_reg_curpm);
885 Safefree(PL_reg_poscache);
886 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
887 Safefree(PL_op_mask);
888 Safefree(PL_psig_ptr);
889 Safefree(PL_psig_name);
890 Safefree(PL_bitcount);
891 Safefree(PL_psig_pend);
893 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
895 DEBUG_P(debprofdump());
896 #ifdef USE_5005THREADS
897 MUTEX_DESTROY(&PL_strtab_mutex);
898 MUTEX_DESTROY(&PL_sv_mutex);
899 MUTEX_DESTROY(&PL_eval_mutex);
900 MUTEX_DESTROY(&PL_cred_mutex);
901 MUTEX_DESTROY(&PL_fdpid_mutex);
902 COND_DESTROY(&PL_eval_cond);
903 #ifdef EMULATE_ATOMIC_REFCOUNTS
904 MUTEX_DESTROY(&PL_svref_mutex);
905 #endif /* EMULATE_ATOMIC_REFCOUNTS */
907 /* As the penultimate thing, free the non-arena SV for thrsv */
908 Safefree(SvPVX(PL_thrsv));
909 Safefree(SvANY(PL_thrsv));
912 #endif /* USE_5005THREADS */
914 #ifdef USE_REENTRANT_API
915 Perl_reentrant_free(aTHX);
920 /* As the absolutely last thing, free the non-arena SV for mess() */
923 /* it could have accumulated taint magic */
924 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
927 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
928 moremagic = mg->mg_moremagic;
929 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
931 Safefree(mg->mg_ptr);
935 /* we know that type >= SVt_PV */
936 (void)SvOOK_off(PL_mess_sv);
937 Safefree(SvPVX(PL_mess_sv));
938 Safefree(SvANY(PL_mess_sv));
939 Safefree(PL_mess_sv);
942 return STATUS_NATIVE_EXPORT;
946 =for apidoc perl_free
948 Releases a Perl interpreter. See L<perlembed>.
956 #if defined(WIN32) || defined(NETWARE)
957 # if defined(PERL_IMPLICIT_SYS)
959 void *host = nw_internal_host;
961 void *host = w32_internal_host;
965 nw_delete_internal_host(host);
967 win32_delete_internal_host(host);
978 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
980 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
981 PL_exitlist[PL_exitlistlen].fn = fn;
982 PL_exitlist[PL_exitlistlen].ptr = ptr;
987 =for apidoc perl_parse
989 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
995 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
1000 #ifdef USE_5005THREADS
1004 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
1007 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
1008 setuid perl scripts securely.\n");
1014 /* we copy rather than point to argv
1015 * since perl_clone will copy and perl_destruct
1016 * has no way of knowing if we've made a copy or
1017 * just point to argv
1019 int i = PL_origargc;
1020 New(0, PL_origargv, i+1, char*);
1021 PL_origargv[i] = '\0';
1023 PL_origargv[i] = savepv(argv[i]);
1031 /* Come here if running an undumped a.out. */
1033 PL_origfilename = savepv(argv[0]);
1034 PL_do_undump = FALSE;
1035 cxstack_ix = -1; /* start label stack again */
1037 init_postdump_symbols(argc,argv,env);
1043 op_free(PL_main_root);
1044 PL_main_root = Nullop;
1046 PL_main_start = Nullop;
1047 SvREFCNT_dec(PL_main_cv);
1048 PL_main_cv = Nullcv;
1051 oldscope = PL_scopestack_ix;
1052 PL_dowarn = G_WARN_OFF;
1054 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1055 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1061 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1062 parse_body(env,xsinit);
1065 call_list(oldscope, PL_checkav);
1072 /* my_exit() was called */
1073 while (PL_scopestack_ix > oldscope)
1076 PL_curstash = PL_defstash;
1078 call_list(oldscope, PL_checkav);
1079 ret = STATUS_NATIVE_EXPORT;
1082 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1090 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1092 S_vparse_body(pTHX_ va_list args)
1094 char **env = va_arg(args, char**);
1095 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1097 return parse_body(env, xsinit);
1102 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1104 int argc = PL_origargc;
1105 char **argv = PL_origargv;
1106 char *scriptname = NULL;
1108 VOL bool dosearch = FALSE;
1109 char *validarg = "";
1112 char *cddir = Nullch;
1114 sv_setpvn(PL_linestr,"",0);
1115 sv = newSVpvn("",0); /* first used for -I flags */
1119 for (argc--,argv++; argc > 0; argc--,argv++) {
1120 if (argv[0][0] != '-' || !argv[0][1])
1124 validarg = " PHOOEY ";
1133 win32_argv2utf8(argc-1, argv+1);
1136 #ifndef PERL_STRICT_CR
1160 if ((s = moreswitches(s)))
1165 if( !PL_tainting ) {
1166 PL_taint_warn = TRUE;
1173 PL_taint_warn = FALSE;
1178 #ifdef MACOS_TRADITIONAL
1179 /* ignore -e for Dev:Pseudo argument */
1180 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1183 if (PL_euid != PL_uid || PL_egid != PL_gid)
1184 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1186 PL_e_script = newSVpvn("",0);
1187 filter_add(read_e_script, NULL);
1190 sv_catpv(PL_e_script, s);
1192 sv_catpv(PL_e_script, argv[1]);
1196 Perl_croak(aTHX_ "No code specified for -e");
1197 sv_catpv(PL_e_script, "\n");
1200 case 'I': /* -I handled both here and in moreswitches() */
1202 if (!*++s && (s=argv[1]) != Nullch) {
1207 STRLEN len = strlen(s);
1208 p = savepvn(s, len);
1209 incpush(p, TRUE, TRUE);
1210 sv_catpvn(sv, "-I", 2);
1211 sv_catpvn(sv, p, len);
1212 sv_catpvn(sv, " ", 1);
1216 Perl_croak(aTHX_ "No directory specified for -I");
1220 PL_preprocess = TRUE;
1230 PL_preambleav = newAV();
1231 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1233 PL_Sv = newSVpv("print myconfig();",0);
1235 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1237 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1239 sv_catpv(PL_Sv,"\" Compile-time options:");
1241 sv_catpv(PL_Sv," DEBUGGING");
1243 # ifdef MULTIPLICITY
1244 sv_catpv(PL_Sv," MULTIPLICITY");
1246 # ifdef USE_5005THREADS
1247 sv_catpv(PL_Sv," USE_5005THREADS");
1249 # ifdef USE_ITHREADS
1250 sv_catpv(PL_Sv," USE_ITHREADS");
1252 # ifdef USE_64_BIT_INT
1253 sv_catpv(PL_Sv," USE_64_BIT_INT");
1255 # ifdef USE_64_BIT_ALL
1256 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1258 # ifdef USE_LONG_DOUBLE
1259 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1261 # ifdef USE_LARGE_FILES
1262 sv_catpv(PL_Sv," USE_LARGE_FILES");
1265 sv_catpv(PL_Sv," USE_SOCKS");
1267 # ifdef PERL_IMPLICIT_CONTEXT
1268 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1270 # ifdef PERL_IMPLICIT_SYS
1271 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1273 sv_catpv(PL_Sv,"\\n\",");
1275 #if defined(LOCAL_PATCH_COUNT)
1276 if (LOCAL_PATCH_COUNT > 0) {
1278 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1279 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1280 if (PL_localpatches[i])
1281 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1285 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1288 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1290 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1293 sv_catpv(PL_Sv, "; \
1295 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1298 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1301 print \" \\%ENV:\\n @env\\n\" if @env; \
1302 print \" \\@INC:\\n @INC\\n\";");
1305 PL_Sv = newSVpv("config_vars(qw(",0);
1306 sv_catpv(PL_Sv, ++s);
1307 sv_catpv(PL_Sv, "))");
1310 av_push(PL_preambleav, PL_Sv);
1311 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1314 PL_doextract = TRUE;
1322 if (!*++s || isSPACE(*s)) {
1326 /* catch use of gnu style long options */
1327 if (strEQ(s, "version")) {
1331 if (strEQ(s, "help")) {
1338 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1342 sv_setsv(get_sv("/", TRUE), PL_rs);
1345 #ifndef SECURE_INTERNAL_GETENV
1348 (s = PerlEnv_getenv("PERL5OPT")))
1353 if (*s == '-' && *(s+1) == 'T') {
1355 PL_taint_warn = FALSE;
1358 char *popt_copy = Nullch;
1371 if (!strchr("DIMUdmtw", *s))
1372 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1376 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1377 s = popt_copy + (s - popt);
1378 d = popt_copy + (d - popt);
1385 if( !PL_tainting ) {
1386 PL_taint_warn = TRUE;
1396 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1397 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1401 scriptname = argv[0];
1404 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1406 else if (scriptname == Nullch) {
1408 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1416 open_script(scriptname,dosearch,sv,&fdscript);
1418 validate_suid(validarg, scriptname,fdscript);
1421 #if defined(SIGCHLD) || defined(SIGCLD)
1424 # define SIGCHLD SIGCLD
1426 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1427 if (sigstate == SIG_IGN) {
1428 if (ckWARN(WARN_SIGNAL))
1429 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1430 "Can't ignore signal CHLD, forcing to default");
1431 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1437 #ifdef MACOS_TRADITIONAL
1438 if (PL_doextract || gMacPerl_AlwaysExtract) {
1443 if (cddir && PerlDir_chdir(cddir) < 0)
1444 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1448 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1449 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1450 CvUNIQUE_on(PL_compcv);
1452 CvPADLIST(PL_compcv) = pad_new(0);
1453 #ifdef USE_5005THREADS
1454 CvOWNER(PL_compcv) = 0;
1455 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1456 MUTEX_INIT(CvMUTEXP(PL_compcv));
1457 #endif /* USE_5005THREADS */
1460 boot_core_UNIVERSAL();
1462 boot_core_xsutils();
1466 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1468 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1474 # ifdef HAS_SOCKS5_INIT
1475 socks5_init(argv[0]);
1481 init_predump_symbols();
1482 /* init_postdump_symbols not currently designed to be called */
1483 /* more than once (ENV isn't cleared first, for example) */
1484 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1486 init_postdump_symbols(argc,argv,env);
1488 /* PL_wantutf8 is conditionally turned on by
1489 * locale.c:Perl_init_i18nl10n() if the environment
1490 * look like the user wants to use UTF-8. */
1491 if (PL_wantutf8) { /* Requires init_predump_symbols(). */
1495 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1496 * _and_ the default open discipline. */
1497 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1498 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1499 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1500 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1501 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1502 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1503 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1504 sv_setpvn(sv, ":utf8\0:utf8", 11);
1511 /* now parse the script */
1513 SETERRNO(0,SS_NORMAL);
1515 #ifdef MACOS_TRADITIONAL
1516 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1518 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1520 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1521 MacPerl_MPWFileName(PL_origfilename));
1525 if (yyparse() || PL_error_count) {
1527 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1529 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1534 CopLINE_set(PL_curcop, 0);
1535 PL_curstash = PL_defstash;
1536 PL_preprocess = FALSE;
1538 SvREFCNT_dec(PL_e_script);
1539 PL_e_script = Nullsv;
1546 SAVECOPFILE(PL_curcop);
1547 SAVECOPLINE(PL_curcop);
1548 gv_check(PL_defstash);
1555 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1556 dump_mstats("after compilation:");
1565 =for apidoc perl_run
1567 Tells a Perl interpreter to run. See L<perlembed>.
1578 #ifdef USE_5005THREADS
1582 oldscope = PL_scopestack_ix;
1587 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1589 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1595 cxstack_ix = -1; /* start context stack again */
1597 case 0: /* normal completion */
1598 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1603 case 2: /* my_exit() */
1604 while (PL_scopestack_ix > oldscope)
1607 PL_curstash = PL_defstash;
1608 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1609 PL_endav && !PL_minus_c)
1610 call_list(oldscope, PL_endav);
1612 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1613 dump_mstats("after execution: ");
1615 ret = STATUS_NATIVE_EXPORT;
1619 POPSTACK_TO(PL_mainstack);
1622 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1632 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1634 S_vrun_body(pTHX_ va_list args)
1636 I32 oldscope = va_arg(args, I32);
1638 return run_body(oldscope);
1644 S_run_body(pTHX_ I32 oldscope)
1646 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1647 PL_sawampersand ? "Enabling" : "Omitting"));
1649 if (!PL_restartop) {
1650 DEBUG_x(dump_all());
1651 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1652 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1656 #ifdef MACOS_TRADITIONAL
1657 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1658 (gMacPerl_ErrorFormat ? "# " : ""),
1659 MacPerl_MPWFileName(PL_origfilename));
1661 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1665 if (PERLDB_SINGLE && PL_DBsingle)
1666 sv_setiv(PL_DBsingle, 1);
1668 call_list(oldscope, PL_initav);
1674 PL_op = PL_restartop;
1678 else if (PL_main_start) {
1679 CvDEPTH(PL_main_cv) = 1;
1680 PL_op = PL_main_start;
1690 =head1 SV Manipulation Functions
1692 =for apidoc p||get_sv
1694 Returns the SV of the specified Perl scalar. If C<create> is set and the
1695 Perl variable does not exist then it will be created. If C<create> is not
1696 set and the variable does not exist then NULL is returned.
1702 Perl_get_sv(pTHX_ const char *name, I32 create)
1705 #ifdef USE_5005THREADS
1706 if (name[1] == '\0' && !isALPHA(name[0])) {
1707 PADOFFSET tmp = find_threadsv(name);
1708 if (tmp != NOT_IN_PAD)
1709 return THREADSV(tmp);
1711 #endif /* USE_5005THREADS */
1712 gv = gv_fetchpv(name, create, SVt_PV);
1719 =head1 Array Manipulation Functions
1721 =for apidoc p||get_av
1723 Returns the AV of the specified Perl array. If C<create> is set and the
1724 Perl variable does not exist then it will be created. If C<create> is not
1725 set and the variable does not exist then NULL is returned.
1731 Perl_get_av(pTHX_ const char *name, I32 create)
1733 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1742 =head1 Hash Manipulation Functions
1744 =for apidoc p||get_hv
1746 Returns the HV of the specified Perl hash. If C<create> is set and the
1747 Perl variable does not exist then it will be created. If C<create> is not
1748 set and the variable does not exist then NULL is returned.
1754 Perl_get_hv(pTHX_ const char *name, I32 create)
1756 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1765 =head1 CV Manipulation Functions
1767 =for apidoc p||get_cv
1769 Returns the CV of the specified Perl subroutine. If C<create> is set and
1770 the Perl subroutine does not exist then it will be declared (which has the
1771 same effect as saying C<sub name;>). If C<create> is not set and the
1772 subroutine does not exist then NULL is returned.
1778 Perl_get_cv(pTHX_ const char *name, I32 create)
1780 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1781 /* XXX unsafe for threads if eval_owner isn't held */
1782 /* XXX this is probably not what they think they're getting.
1783 * It has the same effect as "sub name;", i.e. just a forward
1785 if (create && !GvCVu(gv))
1786 return newSUB(start_subparse(FALSE, 0),
1787 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1795 /* Be sure to refetch the stack pointer after calling these routines. */
1799 =head1 Callback Functions
1801 =for apidoc p||call_argv
1803 Performs a callback to the specified Perl sub. See L<perlcall>.
1809 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1811 /* See G_* flags in cop.h */
1812 /* null terminated arg list */
1819 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1824 return call_pv(sub_name, flags);
1828 =for apidoc p||call_pv
1830 Performs a callback to the specified Perl sub. See L<perlcall>.
1836 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1837 /* name of the subroutine */
1838 /* See G_* flags in cop.h */
1840 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1844 =for apidoc p||call_method
1846 Performs a callback to the specified Perl method. The blessed object must
1847 be on the stack. See L<perlcall>.
1853 Perl_call_method(pTHX_ const char *methname, I32 flags)
1854 /* name of the subroutine */
1855 /* See G_* flags in cop.h */
1857 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1860 /* May be called with any of a CV, a GV, or an SV containing the name. */
1862 =for apidoc p||call_sv
1864 Performs a callback to the Perl sub whose name is in the SV. See
1871 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1872 /* See G_* flags in cop.h */
1875 LOGOP myop; /* fake syntax tree node */
1878 volatile I32 retval = 0;
1880 bool oldcatch = CATCH_GET;
1885 if (flags & G_DISCARD) {
1890 Zero(&myop, 1, LOGOP);
1891 myop.op_next = Nullop;
1892 if (!(flags & G_NOARGS))
1893 myop.op_flags |= OPf_STACKED;
1894 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1895 (flags & G_ARRAY) ? OPf_WANT_LIST :
1900 EXTEND(PL_stack_sp, 1);
1901 *++PL_stack_sp = sv;
1903 oldscope = PL_scopestack_ix;
1905 if (PERLDB_SUB && PL_curstash != PL_debstash
1906 /* Handle first BEGIN of -d. */
1907 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1908 /* Try harder, since this may have been a sighandler, thus
1909 * curstash may be meaningless. */
1910 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1911 && !(flags & G_NODEBUG))
1912 PL_op->op_private |= OPpENTERSUB_DB;
1914 if (flags & G_METHOD) {
1915 Zero(&method_op, 1, UNOP);
1916 method_op.op_next = PL_op;
1917 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1918 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1919 PL_op = (OP*)&method_op;
1922 if (!(flags & G_EVAL)) {
1924 call_body((OP*)&myop, FALSE);
1925 retval = PL_stack_sp - (PL_stack_base + oldmark);
1926 CATCH_SET(oldcatch);
1929 myop.op_other = (OP*)&myop;
1931 /* we're trying to emulate pp_entertry() here */
1933 register PERL_CONTEXT *cx;
1934 I32 gimme = GIMME_V;
1939 push_return(Nullop);
1940 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1942 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1944 PL_in_eval = EVAL_INEVAL;
1945 if (flags & G_KEEPERR)
1946 PL_in_eval |= EVAL_KEEPERR;
1952 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1954 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1961 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1963 call_body((OP*)&myop, FALSE);
1965 retval = PL_stack_sp - (PL_stack_base + oldmark);
1966 if (!(flags & G_KEEPERR))
1973 /* my_exit() was called */
1974 PL_curstash = PL_defstash;
1977 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1978 Perl_croak(aTHX_ "Callback called exit");
1983 PL_op = PL_restartop;
1987 PL_stack_sp = PL_stack_base + oldmark;
1988 if (flags & G_ARRAY)
1992 *++PL_stack_sp = &PL_sv_undef;
1997 if (PL_scopestack_ix > oldscope) {
2001 register PERL_CONTEXT *cx;
2013 if (flags & G_DISCARD) {
2014 PL_stack_sp = PL_stack_base + oldmark;
2023 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2025 S_vcall_body(pTHX_ va_list args)
2027 OP *myop = va_arg(args, OP*);
2028 int is_eval = va_arg(args, int);
2030 call_body(myop, is_eval);
2036 S_call_body(pTHX_ OP *myop, int is_eval)
2038 if (PL_op == myop) {
2040 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2042 PL_op = Perl_pp_entersub(aTHX); /* this does */
2048 /* Eval a string. The G_EVAL flag is always assumed. */
2051 =for apidoc p||eval_sv
2053 Tells Perl to C<eval> the string in the SV.
2059 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2061 /* See G_* flags in cop.h */
2064 UNOP myop; /* fake syntax tree node */
2065 volatile I32 oldmark = SP - PL_stack_base;
2066 volatile I32 retval = 0;
2072 if (flags & G_DISCARD) {
2079 Zero(PL_op, 1, UNOP);
2080 EXTEND(PL_stack_sp, 1);
2081 *++PL_stack_sp = sv;
2082 oldscope = PL_scopestack_ix;
2084 if (!(flags & G_NOARGS))
2085 myop.op_flags = OPf_STACKED;
2086 myop.op_next = Nullop;
2087 myop.op_type = OP_ENTEREVAL;
2088 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2089 (flags & G_ARRAY) ? OPf_WANT_LIST :
2091 if (flags & G_KEEPERR)
2092 myop.op_flags |= OPf_SPECIAL;
2094 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2096 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2103 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2105 call_body((OP*)&myop,TRUE);
2107 retval = PL_stack_sp - (PL_stack_base + oldmark);
2108 if (!(flags & G_KEEPERR))
2115 /* my_exit() was called */
2116 PL_curstash = PL_defstash;
2119 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2120 Perl_croak(aTHX_ "Callback called exit");
2125 PL_op = PL_restartop;
2129 PL_stack_sp = PL_stack_base + oldmark;
2130 if (flags & G_ARRAY)
2134 *++PL_stack_sp = &PL_sv_undef;
2140 if (flags & G_DISCARD) {
2141 PL_stack_sp = PL_stack_base + oldmark;
2151 =for apidoc p||eval_pv
2153 Tells Perl to C<eval> the given string and return an SV* result.
2159 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2162 SV* sv = newSVpv(p, 0);
2164 eval_sv(sv, G_SCALAR);
2171 if (croak_on_error && SvTRUE(ERRSV)) {
2173 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2179 /* Require a module. */
2182 =head1 Embedding Functions
2184 =for apidoc p||require_pv
2186 Tells Perl to C<require> the file named by the string argument. It is
2187 analogous to the Perl code C<eval "require '$file'">. It's even
2188 implemented that way; consider using Perl_load_module instead.
2193 Perl_require_pv(pTHX_ const char *pv)
2197 PUSHSTACKi(PERLSI_REQUIRE);
2199 sv = sv_newmortal();
2200 sv_setpv(sv, "require '");
2203 eval_sv(sv, G_DISCARD);
2209 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2213 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2214 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2218 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2220 /* This message really ought to be max 23 lines.
2221 * Removed -h because the user already knows that option. Others? */
2223 static char *usage_msg[] = {
2224 "-0[octal] specify record separator (\\0, if no argument)",
2225 "-a autosplit mode with -n or -p (splits $_ into @F)",
2226 "-C enable native wide character system interfaces",
2227 "-c check syntax only (runs BEGIN and CHECK blocks)",
2228 "-d[:debugger] run program under debugger",
2229 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2230 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2231 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2232 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2233 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2234 "-l[octal] enable line ending processing, specifies line terminator",
2235 "-[mM][-]module execute `use/no module...' before executing program",
2236 "-n assume 'while (<>) { ... }' loop around program",
2237 "-p assume loop like -n but print line also, like sed",
2238 "-P run program through C preprocessor before compilation",
2239 "-s enable rudimentary parsing for switches after programfile",
2240 "-S look for programfile using PATH environment variable",
2241 "-T enable tainting checks",
2242 "-t enable tainting warnings",
2243 "-u dump core after parsing program",
2244 "-U allow unsafe operations",
2245 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2246 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2247 "-w enable many useful warnings (RECOMMENDED)",
2248 "-W enable all warnings",
2249 "-X disable all warnings",
2250 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2254 char **p = usage_msg;
2256 PerlIO_printf(PerlIO_stdout(),
2257 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2260 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2263 /* This routine handles any switches that can be given during run */
2266 Perl_moreswitches(pTHX_ char *s)
2276 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2277 SvREFCNT_dec(PL_rs);
2278 if (rschar & ~((U8)~0))
2279 PL_rs = &PL_sv_undef;
2280 else if (!rschar && numlen >= 2)
2281 PL_rs = newSVpvn("", 0);
2283 char ch = (char)rschar;
2284 PL_rs = newSVpvn(&ch, 1);
2289 PL_widesyscalls = TRUE;
2295 while (*s && !isSPACE(*s)) ++s;
2297 PL_splitstr = savepv(PL_splitstr);
2310 /* The following permits -d:Mod to accepts arguments following an =
2311 in the fashion that -MSome::Mod does. */
2312 if (*s == ':' || *s == '=') {
2315 sv = newSVpv("use Devel::", 0);
2317 /* We now allow -d:Module=Foo,Bar */
2318 while(isALNUM(*s) || *s==':') ++s;
2320 sv_catpv(sv, start);
2322 sv_catpvn(sv, start, s-start);
2323 sv_catpv(sv, " split(/,/,q{");
2328 my_setenv("PERL5DB", SvPV(sv, PL_na));
2331 PL_perldb = PERLDB_ALL;
2339 if (isALPHA(s[1])) {
2340 /* if adding extra options, remember to update DEBUG_MASK */
2341 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
2344 for (s++; *s && (d = strchr(debopts,*s)); s++)
2345 PL_debug |= 1 << (d - debopts);
2348 PL_debug = atoi(s+1);
2349 for (s++; isDIGIT(*s); s++) ;
2352 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2353 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2354 "-Dp not implemented on this platform\n");
2356 PL_debug |= DEBUG_TOP_FLAG;
2357 #else /* !DEBUGGING */
2358 if (ckWARN_d(WARN_DEBUGGING))
2359 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2360 "Recompile perl with -DDEBUGGING to use -D switch\n");
2361 for (s++; isALNUM(*s); s++) ;
2367 usage(PL_origargv[0]);
2371 Safefree(PL_inplace);
2372 #if defined(__CYGWIN__) /* do backup extension automagically */
2373 if (*(s+1) == '\0') {
2374 PL_inplace = savepv(".bak");
2377 #endif /* __CYGWIN__ */
2378 PL_inplace = savepv(s+1);
2380 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2383 if (*s == '-') /* Additional switches on #! line. */
2387 case 'I': /* -I handled both here and in parse_body() */
2390 while (*s && isSPACE(*s))
2395 /* ignore trailing spaces (possibly followed by other switches) */
2397 for (e = p; *e && !isSPACE(*e); e++) ;
2401 } while (*p && *p != '-');
2402 e = savepvn(s, e-s);
2403 incpush(e, TRUE, TRUE);
2410 Perl_croak(aTHX_ "No directory specified for -I");
2416 SvREFCNT_dec(PL_ors_sv);
2421 PL_ors_sv = newSVpvn("\n",1);
2422 numlen = 3 + (*s == '0');
2423 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2427 if (RsPARA(PL_rs)) {
2428 PL_ors_sv = newSVpvn("\n\n",2);
2431 PL_ors_sv = newSVsv(PL_rs);
2436 forbid_setid("-M"); /* XXX ? */
2439 forbid_setid("-m"); /* XXX ? */
2444 /* -M-foo == 'no foo' */
2445 if (*s == '-') { use = "no "; ++s; }
2446 sv = newSVpv(use,0);
2448 /* We allow -M'Module qw(Foo Bar)' */
2449 while(isALNUM(*s) || *s==':') ++s;
2451 sv_catpv(sv, start);
2452 if (*(start-1) == 'm') {
2454 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2455 sv_catpv( sv, " ()");
2459 Perl_croak(aTHX_ "Module name required with -%c option",
2461 sv_catpvn(sv, start, s-start);
2462 sv_catpv(sv, " split(/,/,q{");
2468 PL_preambleav = newAV();
2469 av_push(PL_preambleav, sv);
2472 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2484 PL_doswitches = TRUE;
2489 Perl_croak(aTHX_ "Too late for \"-t\" option");
2494 Perl_croak(aTHX_ "Too late for \"-T\" option");
2498 #ifdef MACOS_TRADITIONAL
2499 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2501 PL_do_undump = TRUE;
2510 PerlIO_printf(PerlIO_stdout(),
2511 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2512 PL_patchlevel, ARCHNAME));
2514 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2515 PerlIO_printf(PerlIO_stdout(),
2516 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2517 PerlIO_printf(PerlIO_stdout(),
2518 Perl_form(aTHX_ " built under %s at %s %s\n",
2519 OSNAME, __DATE__, __TIME__));
2520 PerlIO_printf(PerlIO_stdout(),
2521 Perl_form(aTHX_ " OS Specific Release: %s\n",
2525 #if defined(LOCAL_PATCH_COUNT)
2526 if (LOCAL_PATCH_COUNT > 0)
2527 PerlIO_printf(PerlIO_stdout(),
2528 "\n(with %d registered patch%s, "
2529 "see perl -V for more detail)",
2530 (int)LOCAL_PATCH_COUNT,
2531 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2534 PerlIO_printf(PerlIO_stdout(),
2535 "\n\nCopyright 1987-2002, Larry Wall\n");
2536 #ifdef MACOS_TRADITIONAL
2537 PerlIO_printf(PerlIO_stdout(),
2538 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2539 "maintained by Chris Nandor\n");
2542 PerlIO_printf(PerlIO_stdout(),
2543 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2546 PerlIO_printf(PerlIO_stdout(),
2547 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2548 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2551 PerlIO_printf(PerlIO_stdout(),
2552 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2553 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2556 PerlIO_printf(PerlIO_stdout(),
2557 "atariST series port, ++jrb bammi@cadence.com\n");
2560 PerlIO_printf(PerlIO_stdout(),
2561 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2564 PerlIO_printf(PerlIO_stdout(),
2565 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2568 PerlIO_printf(PerlIO_stdout(),
2569 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2572 PerlIO_printf(PerlIO_stdout(),
2573 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2576 PerlIO_printf(PerlIO_stdout(),
2577 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2580 PerlIO_printf(PerlIO_stdout(),
2581 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2584 PerlIO_printf(PerlIO_stdout(),
2585 "MiNT port by Guido Flohr, 1997-1999\n");
2588 PerlIO_printf(PerlIO_stdout(),
2589 "EPOC port by Olaf Flebbe, 1999-2002\n");
2592 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2593 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2596 #ifdef BINARY_BUILD_NOTICE
2597 BINARY_BUILD_NOTICE;
2599 PerlIO_printf(PerlIO_stdout(),
2601 Perl may be copied only under the terms of either the Artistic License or the\n\
2602 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2603 Complete documentation for Perl, including FAQ lists, should be found on\n\
2604 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2605 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2608 if (! (PL_dowarn & G_WARN_ALL_MASK))
2609 PL_dowarn |= G_WARN_ON;
2613 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2614 if (!specialWARN(PL_compiling.cop_warnings))
2615 SvREFCNT_dec(PL_compiling.cop_warnings);
2616 PL_compiling.cop_warnings = pWARN_ALL ;
2620 PL_dowarn = G_WARN_ALL_OFF;
2621 if (!specialWARN(PL_compiling.cop_warnings))
2622 SvREFCNT_dec(PL_compiling.cop_warnings);
2623 PL_compiling.cop_warnings = pWARN_NONE ;
2628 if (s[1] == '-') /* Additional switches on #! line. */
2633 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2639 #ifdef ALTERNATE_SHEBANG
2640 case 'S': /* OS/2 needs -S on "extproc" line. */
2648 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2653 /* compliments of Tom Christiansen */
2655 /* unexec() can be found in the Gnu emacs distribution */
2656 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2659 Perl_my_unexec(pTHX)
2667 prog = newSVpv(BIN_EXP, 0);
2668 sv_catpv(prog, "/perl");
2669 file = newSVpv(PL_origfilename, 0);
2670 sv_catpv(file, ".perldump");
2672 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2673 /* unexec prints msg to stderr in case of failure */
2674 PerlProc_exit(status);
2677 # include <lib$routines.h>
2678 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2680 ABORT(); /* for use with undump */
2685 /* initialize curinterp */
2691 # define PERLVAR(var,type)
2692 # define PERLVARA(var,n,type)
2693 # if defined(PERL_IMPLICIT_CONTEXT)
2694 # if defined(USE_5005THREADS)
2695 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2696 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2697 # else /* !USE_5005THREADS */
2698 # define PERLVARI(var,type,init) aTHX->var = init;
2699 # define PERLVARIC(var,type,init) aTHX->var = init;
2700 # endif /* USE_5005THREADS */
2702 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2703 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2705 # include "intrpvar.h"
2706 # ifndef USE_5005THREADS
2707 # include "thrdvar.h"
2714 # define PERLVAR(var,type)
2715 # define PERLVARA(var,n,type)
2716 # define PERLVARI(var,type,init) PL_##var = init;
2717 # define PERLVARIC(var,type,init) PL_##var = init;
2718 # include "intrpvar.h"
2719 # ifndef USE_5005THREADS
2720 # include "thrdvar.h"
2731 S_init_main_stash(pTHX)
2735 PL_curstash = PL_defstash = newHV();
2736 PL_curstname = newSVpvn("main",4);
2737 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2738 SvREFCNT_dec(GvHV(gv));
2739 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2741 HvNAME(PL_defstash) = savepv("main");
2742 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2743 GvMULTI_on(PL_incgv);
2744 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2745 GvMULTI_on(PL_hintgv);
2746 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2747 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2748 GvMULTI_on(PL_errgv);
2749 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2750 GvMULTI_on(PL_replgv);
2751 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2752 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2753 sv_setpvn(ERRSV, "", 0);
2754 PL_curstash = PL_defstash;
2755 CopSTASH_set(&PL_compiling, PL_defstash);
2756 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2757 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2758 /* We must init $/ before switches are processed. */
2759 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2763 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2767 char *cpp_discard_flag;
2773 PL_origfilename = savepv("-e");
2776 /* if find_script() returns, it returns a malloc()-ed value */
2777 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2779 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2780 char *s = scriptname + 8;
2781 *fdscript = atoi(s);
2785 scriptname = savepv(s + 1);
2786 Safefree(PL_origfilename);
2787 PL_origfilename = scriptname;
2792 CopFILE_free(PL_curcop);
2793 CopFILE_set(PL_curcop, PL_origfilename);
2794 if (strEQ(PL_origfilename,"-"))
2796 if (*fdscript >= 0) {
2797 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2798 # if defined(HAS_FCNTL) && defined(F_SETFD)
2800 /* ensure close-on-exec */
2801 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2804 else if (PL_preprocess) {
2805 char *cpp_cfg = CPPSTDIN;
2806 SV *cpp = newSVpvn("",0);
2807 SV *cmd = NEWSV(0,0);
2809 if (strEQ(cpp_cfg, "cppstdin"))
2810 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2811 sv_catpv(cpp, cpp_cfg);
2814 sv_catpvn(sv, "-I", 2);
2815 sv_catpv(sv,PRIVLIB_EXP);
2818 DEBUG_P(PerlIO_printf(Perl_debug_log,
2819 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2820 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2822 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2829 cpp_discard_flag = "";
2831 cpp_discard_flag = "-C";
2835 perl = os2_execname(aTHX);
2837 perl = PL_origargv[0];
2841 /* This strips off Perl comments which might interfere with
2842 the C pre-processor, including #!. #line directives are
2843 deliberately stripped to avoid confusion with Perl's version
2844 of #line. FWP played some golf with it so it will fit
2845 into VMS's 255 character buffer.
2848 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2850 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2852 Perl_sv_setpvf(aTHX_ cmd, "\
2853 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2854 perl, quote, code, quote, scriptname, cpp,
2855 cpp_discard_flag, sv, CPPMINUS);
2857 PL_doextract = FALSE;
2858 # ifdef IAMSUID /* actually, this is caught earlier */
2859 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2861 (void)seteuid(PL_uid); /* musn't stay setuid root */
2863 # ifdef HAS_SETREUID
2864 (void)setreuid((Uid_t)-1, PL_uid);
2866 # ifdef HAS_SETRESUID
2867 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2869 PerlProc_setuid(PL_uid);
2873 if (PerlProc_geteuid() != PL_uid)
2874 Perl_croak(aTHX_ "Can't do seteuid!\n");
2876 # endif /* IAMSUID */
2878 DEBUG_P(PerlIO_printf(Perl_debug_log,
2879 "PL_preprocess: cmd=\"%s\"\n",
2882 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2886 else if (!*scriptname) {
2887 forbid_setid("program input from stdin");
2888 PL_rsfp = PerlIO_stdin();
2891 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2892 # if defined(HAS_FCNTL) && defined(F_SETFD)
2894 /* ensure close-on-exec */
2895 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2900 # ifndef IAMSUID /* in case script is not readable before setuid */
2902 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2903 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2906 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2907 BIN_EXP, (int)PERL_REVISION,
2909 (int)PERL_SUBVERSION), PL_origargv);
2910 Perl_croak(aTHX_ "Can't do setuid\n");
2916 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2919 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2920 CopFILE(PL_curcop), Strerror(errno));
2926 * I_SYSSTATVFS HAS_FSTATVFS
2928 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2929 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2930 * here so that metaconfig picks them up. */
2934 S_fd_on_nosuid_fs(pTHX_ int fd)
2936 int check_okay = 0; /* able to do all the required sys/libcalls */
2937 int on_nosuid = 0; /* the fd is on a nosuid fs */
2939 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2940 * fstatvfs() is UNIX98.
2941 * fstatfs() is 4.3 BSD.
2942 * ustat()+getmnt() is pre-4.3 BSD.
2943 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2944 * an irrelevant filesystem while trying to reach the right one.
2947 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2949 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2950 defined(HAS_FSTATVFS)
2951 # define FD_ON_NOSUID_CHECK_OKAY
2952 struct statvfs stfs;
2954 check_okay = fstatvfs(fd, &stfs) == 0;
2955 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2956 # endif /* fstatvfs */
2958 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2959 defined(PERL_MOUNT_NOSUID) && \
2960 defined(HAS_FSTATFS) && \
2961 defined(HAS_STRUCT_STATFS) && \
2962 defined(HAS_STRUCT_STATFS_F_FLAGS)
2963 # define FD_ON_NOSUID_CHECK_OKAY
2966 check_okay = fstatfs(fd, &stfs) == 0;
2967 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2968 # endif /* fstatfs */
2970 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2971 defined(PERL_MOUNT_NOSUID) && \
2972 defined(HAS_FSTAT) && \
2973 defined(HAS_USTAT) && \
2974 defined(HAS_GETMNT) && \
2975 defined(HAS_STRUCT_FS_DATA) && \
2977 # define FD_ON_NOSUID_CHECK_OKAY
2980 if (fstat(fd, &fdst) == 0) {
2982 if (ustat(fdst.st_dev, &us) == 0) {
2984 /* NOSTAT_ONE here because we're not examining fields which
2985 * vary between that case and STAT_ONE. */
2986 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2987 size_t cmplen = sizeof(us.f_fname);
2988 if (sizeof(fsd.fd_req.path) < cmplen)
2989 cmplen = sizeof(fsd.fd_req.path);
2990 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2991 fdst.st_dev == fsd.fd_req.dev) {
2993 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2999 # endif /* fstat+ustat+getmnt */
3001 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3002 defined(HAS_GETMNTENT) && \
3003 defined(HAS_HASMNTOPT) && \
3004 defined(MNTOPT_NOSUID)
3005 # define FD_ON_NOSUID_CHECK_OKAY
3006 FILE *mtab = fopen("/etc/mtab", "r");
3007 struct mntent *entry;
3010 if (mtab && (fstat(fd, &stb) == 0)) {
3011 while (entry = getmntent(mtab)) {
3012 if (stat(entry->mnt_dir, &fsb) == 0
3013 && fsb.st_dev == stb.st_dev)
3015 /* found the filesystem */
3017 if (hasmntopt(entry, MNTOPT_NOSUID))
3020 } /* A single fs may well fail its stat(). */
3025 # endif /* getmntent+hasmntopt */
3028 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
3031 #endif /* IAMSUID */
3034 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
3040 /* do we need to emulate setuid on scripts? */
3042 /* This code is for those BSD systems that have setuid #! scripts disabled
3043 * in the kernel because of a security problem. Merely defining DOSUID
3044 * in perl will not fix that problem, but if you have disabled setuid
3045 * scripts in the kernel, this will attempt to emulate setuid and setgid
3046 * on scripts that have those now-otherwise-useless bits set. The setuid
3047 * root version must be called suidperl or sperlN.NNN. If regular perl
3048 * discovers that it has opened a setuid script, it calls suidperl with
3049 * the same argv that it had. If suidperl finds that the script it has
3050 * just opened is NOT setuid root, it sets the effective uid back to the
3051 * uid. We don't just make perl setuid root because that loses the
3052 * effective uid we had before invoking perl, if it was different from the
3055 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3056 * be defined in suidperl only. suidperl must be setuid root. The
3057 * Configure script will set this up for you if you want it.
3063 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3064 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3065 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3070 #ifndef HAS_SETREUID
3071 /* On this access check to make sure the directories are readable,
3072 * there is actually a small window that the user could use to make
3073 * filename point to an accessible directory. So there is a faint
3074 * chance that someone could execute a setuid script down in a
3075 * non-accessible directory. I don't know what to do about that.
3076 * But I don't think it's too important. The manual lies when
3077 * it says access() is useful in setuid programs.
3079 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3080 Perl_croak(aTHX_ "Permission denied");
3082 /* If we can swap euid and uid, then we can determine access rights
3083 * with a simple stat of the file, and then compare device and
3084 * inode to make sure we did stat() on the same file we opened.
3085 * Then we just have to make sure he or she can execute it.
3092 setreuid(PL_euid,PL_uid) < 0
3095 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3098 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3099 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3100 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3101 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3102 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3103 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3104 Perl_croak(aTHX_ "Permission denied");
3106 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3107 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3108 (void)PerlIO_close(PL_rsfp);
3109 Perl_croak(aTHX_ "Permission denied\n");
3113 setreuid(PL_uid,PL_euid) < 0
3115 # if defined(HAS_SETRESUID)
3116 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3119 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3120 Perl_croak(aTHX_ "Can't reswap uid and euid");
3121 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3122 Perl_croak(aTHX_ "Permission denied\n");
3124 #endif /* HAS_SETREUID */
3125 #endif /* IAMSUID */
3127 if (!S_ISREG(PL_statbuf.st_mode))
3128 Perl_croak(aTHX_ "Permission denied");
3129 if (PL_statbuf.st_mode & S_IWOTH)
3130 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3131 PL_doswitches = FALSE; /* -s is insecure in suid */
3132 CopLINE_inc(PL_curcop);
3133 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3134 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3135 Perl_croak(aTHX_ "No #! line");
3136 s = SvPV(PL_linestr,n_a)+2;
3138 while (!isSPACE(*s)) s++;
3139 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3140 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3141 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3142 Perl_croak(aTHX_ "Not a perl script");
3143 while (*s == ' ' || *s == '\t') s++;
3145 * #! arg must be what we saw above. They can invoke it by
3146 * mentioning suidperl explicitly, but they may not add any strange
3147 * arguments beyond what #! says if they do invoke suidperl that way.
3149 len = strlen(validarg);
3150 if (strEQ(validarg," PHOOEY ") ||
3151 strnNE(s,validarg,len) || !isSPACE(s[len]))
3152 Perl_croak(aTHX_ "Args must match #! line");
3155 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3156 PL_euid == PL_statbuf.st_uid)
3158 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3159 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3160 #endif /* IAMSUID */
3162 if (PL_euid) { /* oops, we're not the setuid root perl */
3163 (void)PerlIO_close(PL_rsfp);
3166 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3167 (int)PERL_REVISION, (int)PERL_VERSION,
3168 (int)PERL_SUBVERSION), PL_origargv);
3170 Perl_croak(aTHX_ "Can't do setuid\n");
3173 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3175 (void)setegid(PL_statbuf.st_gid);
3178 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3180 #ifdef HAS_SETRESGID
3181 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3183 PerlProc_setgid(PL_statbuf.st_gid);
3187 if (PerlProc_getegid() != PL_statbuf.st_gid)
3188 Perl_croak(aTHX_ "Can't do setegid!\n");
3190 if (PL_statbuf.st_mode & S_ISUID) {
3191 if (PL_statbuf.st_uid != PL_euid)
3193 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3196 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3198 #ifdef HAS_SETRESUID
3199 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3201 PerlProc_setuid(PL_statbuf.st_uid);
3205 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3206 Perl_croak(aTHX_ "Can't do seteuid!\n");
3208 else if (PL_uid) { /* oops, mustn't run as root */
3210 (void)seteuid((Uid_t)PL_uid);
3213 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3215 #ifdef HAS_SETRESUID
3216 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3218 PerlProc_setuid((Uid_t)PL_uid);
3222 if (PerlProc_geteuid() != PL_uid)
3223 Perl_croak(aTHX_ "Can't do seteuid!\n");
3226 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3227 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3230 else if (PL_preprocess)
3231 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3232 else if (fdscript >= 0)
3233 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3235 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3237 /* We absolutely must clear out any saved ids here, so we */
3238 /* exec the real perl, substituting fd script for scriptname. */
3239 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3240 PerlIO_rewind(PL_rsfp);
3241 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3242 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3243 if (!PL_origargv[which])
3244 Perl_croak(aTHX_ "Permission denied");
3245 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3246 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3247 #if defined(HAS_FCNTL) && defined(F_SETFD)
3248 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3250 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3251 (int)PERL_REVISION, (int)PERL_VERSION,
3252 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3253 Perl_croak(aTHX_ "Can't do setuid\n");
3254 #endif /* IAMSUID */
3256 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3257 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3258 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3259 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3261 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3264 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3265 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3266 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3267 /* not set-id, must be wrapped */
3273 S_find_beginning(pTHX)
3275 register char *s, *s2;
3276 #ifdef MACOS_TRADITIONAL
3280 /* skip forward in input to the real script? */
3283 #ifdef MACOS_TRADITIONAL
3284 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3286 while (PL_doextract || gMacPerl_AlwaysExtract) {
3287 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3288 if (!gMacPerl_AlwaysExtract)
3289 Perl_croak(aTHX_ "No Perl script found in input\n");
3291 if (PL_doextract) /* require explicit override ? */
3292 if (!OverrideExtract(PL_origfilename))
3293 Perl_croak(aTHX_ "User aborted script\n");
3295 PL_doextract = FALSE;
3297 /* Pater peccavi, file does not have #! */
3298 PerlIO_rewind(PL_rsfp);
3303 while (PL_doextract) {
3304 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3305 Perl_croak(aTHX_ "No Perl script found in input\n");
3308 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3309 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3310 PL_doextract = FALSE;
3311 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3313 while (*s == ' ' || *s == '\t') s++;
3315 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3316 if (strnEQ(s2-4,"perl",4))
3318 while ((s = moreswitches(s)))
3321 #ifdef MACOS_TRADITIONAL
3322 /* We are always searching for the #!perl line in MacPerl,
3323 * so if we find it, still keep the line count correct
3324 * by counting lines we already skipped over
3326 for (; maclines > 0 ; maclines--)
3327 PerlIO_ungetc(PL_rsfp, '\n');
3331 /* gMacPerl_AlwaysExtract is false in MPW tool */
3332 } else if (gMacPerl_AlwaysExtract) {
3343 PL_uid = PerlProc_getuid();
3344 PL_euid = PerlProc_geteuid();
3345 PL_gid = PerlProc_getgid();
3346 PL_egid = PerlProc_getegid();
3348 PL_uid |= PL_gid << 16;
3349 PL_euid |= PL_egid << 16;
3351 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3355 S_forbid_setid(pTHX_ char *s)
3357 if (PL_euid != PL_uid)
3358 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3359 if (PL_egid != PL_gid)
3360 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3364 Perl_init_debugger(pTHX)
3366 HV *ostash = PL_curstash;
3368 PL_curstash = PL_debstash;
3369 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3370 AvREAL_off(PL_dbargs);
3371 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3372 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3373 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3374 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3375 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3376 sv_setiv(PL_DBsingle, 0);
3377 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3378 sv_setiv(PL_DBtrace, 0);
3379 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3380 sv_setiv(PL_DBsignal, 0);
3381 PL_curstash = ostash;
3384 #ifndef STRESS_REALLOC
3385 #define REASONABLE(size) (size)
3387 #define REASONABLE(size) (1) /* unreasonable */
3391 Perl_init_stacks(pTHX)
3393 /* start with 128-item stack and 8K cxstack */
3394 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3395 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3396 PL_curstackinfo->si_type = PERLSI_MAIN;
3397 PL_curstack = PL_curstackinfo->si_stack;
3398 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3400 PL_stack_base = AvARRAY(PL_curstack);
3401 PL_stack_sp = PL_stack_base;
3402 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3404 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3407 PL_tmps_max = REASONABLE(128);
3409 New(54,PL_markstack,REASONABLE(32),I32);
3410 PL_markstack_ptr = PL_markstack;
3411 PL_markstack_max = PL_markstack + REASONABLE(32);
3415 New(54,PL_scopestack,REASONABLE(32),I32);
3416 PL_scopestack_ix = 0;
3417 PL_scopestack_max = REASONABLE(32);
3419 New(54,PL_savestack,REASONABLE(128),ANY);
3420 PL_savestack_ix = 0;
3421 PL_savestack_max = REASONABLE(128);
3423 New(54,PL_retstack,REASONABLE(16),OP*);
3425 PL_retstack_max = REASONABLE(16);
3433 while (PL_curstackinfo->si_next)
3434 PL_curstackinfo = PL_curstackinfo->si_next;
3435 while (PL_curstackinfo) {
3436 PERL_SI *p = PL_curstackinfo->si_prev;
3437 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3438 Safefree(PL_curstackinfo->si_cxstack);
3439 Safefree(PL_curstackinfo);
3440 PL_curstackinfo = p;
3442 Safefree(PL_tmps_stack);
3443 Safefree(PL_markstack);
3444 Safefree(PL_scopestack);
3445 Safefree(PL_savestack);
3446 Safefree(PL_retstack);
3455 lex_start(PL_linestr);
3457 PL_subname = newSVpvn("main",4);
3461 S_init_predump_symbols(pTHX)
3466 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3467 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3468 GvMULTI_on(PL_stdingv);
3469 io = GvIOp(PL_stdingv);
3470 IoTYPE(io) = IoTYPE_RDONLY;
3471 IoIFP(io) = PerlIO_stdin();
3472 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3474 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3476 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3479 IoTYPE(io) = IoTYPE_WRONLY;
3480 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3482 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3484 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3486 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3487 GvMULTI_on(PL_stderrgv);
3488 io = GvIOp(PL_stderrgv);
3489 IoTYPE(io) = IoTYPE_WRONLY;
3490 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3491 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3493 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3495 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3498 Safefree(PL_osname);
3499 PL_osname = savepv(OSNAME);
3503 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3506 argc--,argv++; /* skip name of script */
3507 if (PL_doswitches) {
3508 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3511 if (argv[0][1] == '-' && !argv[0][2]) {
3515 if ((s = strchr(argv[0], '='))) {
3517 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3520 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3523 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3524 GvMULTI_on(PL_argvgv);
3525 (void)gv_AVadd(PL_argvgv);
3526 av_clear(GvAVn(PL_argvgv));
3527 for (; argc > 0; argc--,argv++) {
3528 SV *sv = newSVpv(argv[0],0);
3529 av_push(GvAVn(PL_argvgv),sv);
3530 if (PL_widesyscalls)
3531 (void)sv_utf8_decode(sv);
3536 #ifdef HAS_PROCSELFEXE
3537 /* This is a function so that we don't hold on to MAXPATHLEN
3538 bytes of stack longer than necessary
3541 S_procself_val(pTHX_ SV *sv, char *arg0)
3543 char buf[MAXPATHLEN];
3544 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3546 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3547 includes a spurious NUL which will cause $^X to fail in system
3548 or backticks (this will prevent extensions from being built and
3549 many tests from working). readlink is not meant to add a NUL.
3550 Normal readlink works fine.
3552 if (len > 0 && buf[len-1] == '\0') {
3556 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3557 returning the text "unknown" from the readlink rather than the path
3558 to the executable (or returning an error from the readlink). Any valid
3559 path has a '/' in it somewhere, so use that to validate the result.
3560 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3562 if (len > 0 && memchr(buf, '/', len)) {
3563 sv_setpvn(sv,buf,len);
3569 #endif /* HAS_PROCSELFEXE */
3572 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3578 PL_toptarget = NEWSV(0,0);
3579 sv_upgrade(PL_toptarget, SVt_PVFM);
3580 sv_setpvn(PL_toptarget, "", 0);
3581 PL_bodytarget = NEWSV(0,0);
3582 sv_upgrade(PL_bodytarget, SVt_PVFM);
3583 sv_setpvn(PL_bodytarget, "", 0);
3584 PL_formtarget = PL_bodytarget;
3588 init_argv_symbols(argc,argv);
3590 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3591 #ifdef MACOS_TRADITIONAL
3592 /* $0 is not majick on a Mac */
3593 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3595 sv_setpv(GvSV(tmpgv),PL_origfilename);
3596 magicname("0", "0", 1);
3599 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3600 #ifdef HAS_PROCSELFEXE
3601 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3604 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3606 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3610 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3612 GvMULTI_on(PL_envgv);
3613 hv = GvHVn(PL_envgv);
3614 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3615 #ifdef USE_ENVIRON_ARRAY
3616 /* Note that if the supplied env parameter is actually a copy
3617 of the global environ then it may now point to free'd memory
3618 if the environment has been modified since. To avoid this
3619 problem we treat env==NULL as meaning 'use the default'
3624 # ifdef USE_ITHREADS
3625 && PL_curinterp == aTHX
3629 environ[0] = Nullch;
3632 for (; *env; env++) {
3633 if (!(s = strchr(*env,'=')))
3640 sv = newSVpv(s+1, 0);
3641 (void)hv_store(hv, *env, s - *env, sv, 0);
3645 #endif /* USE_ENVIRON_ARRAY */
3648 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3649 SvREADONLY_off(GvSV(tmpgv));
3650 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3651 SvREADONLY_on(GvSV(tmpgv));
3653 #ifdef THREADS_HAVE_PIDS
3654 PL_ppid = (IV)getppid();
3657 /* touch @F array to prevent spurious warnings 20020415 MJD */
3659 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3661 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3662 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3663 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3667 S_init_perllib(pTHX)
3672 s = PerlEnv_getenv("PERL5LIB");
3674 incpush(s, TRUE, TRUE);
3676 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3678 /* Treat PERL5?LIB as a possible search list logical name -- the
3679 * "natural" VMS idiom for a Unix path string. We allow each
3680 * element to be a set of |-separated directories for compatibility.
3684 if (my_trnlnm("PERL5LIB",buf,0))
3685 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3687 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3691 /* Use the ~-expanded versions of APPLLIB (undocumented),
3692 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3695 incpush(APPLLIB_EXP, TRUE, TRUE);
3699 incpush(ARCHLIB_EXP, FALSE, FALSE);
3701 #ifdef MACOS_TRADITIONAL
3704 SV * privdir = NEWSV(55, 0);
3705 char * macperl = PerlEnv_getenv("MACPERL");
3710 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3711 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3712 incpush(SvPVX(privdir), TRUE, FALSE);
3713 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3714 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3715 incpush(SvPVX(privdir), TRUE, FALSE);
3717 SvREFCNT_dec(privdir);
3720 incpush(":", FALSE, FALSE);
3723 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3726 incpush(PRIVLIB_EXP, TRUE, FALSE);
3728 incpush(PRIVLIB_EXP, FALSE, FALSE);
3732 /* sitearch is always relative to sitelib on Windows for
3733 * DLL-based path intuition to work correctly */
3734 # if !defined(WIN32)
3735 incpush(SITEARCH_EXP, FALSE, FALSE);
3741 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3743 incpush(SITELIB_EXP, FALSE, FALSE);
3747 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3748 incpush(SITELIB_STEM, FALSE, TRUE);
3751 #ifdef PERL_VENDORARCH_EXP
3752 /* vendorarch is always relative to vendorlib on Windows for
3753 * DLL-based path intuition to work correctly */
3754 # if !defined(WIN32)
3755 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3759 #ifdef PERL_VENDORLIB_EXP
3761 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3763 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3767 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3768 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3771 #ifdef PERL_OTHERLIBDIRS
3772 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3776 incpush(".", FALSE, FALSE);
3777 #endif /* MACOS_TRADITIONAL */
3780 #if defined(DOSISH) || defined(EPOC)
3781 # define PERLLIB_SEP ';'
3784 # define PERLLIB_SEP '|'
3786 # if defined(MACOS_TRADITIONAL)
3787 # define PERLLIB_SEP ','
3789 # define PERLLIB_SEP ':'
3793 #ifndef PERLLIB_MANGLE
3794 # define PERLLIB_MANGLE(s,n) (s)
3798 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3800 SV *subdir = Nullsv;
3805 if (addsubdirs || addoldvers) {
3806 subdir = sv_newmortal();
3809 /* Break at all separators */
3811 SV *libdir = NEWSV(55,0);
3814 /* skip any consecutive separators */
3815 while ( *p == PERLLIB_SEP ) {
3816 /* Uncomment the next line for PATH semantics */
3817 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3821 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3822 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3827 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3828 p = Nullch; /* break out */
3830 #ifdef MACOS_TRADITIONAL
3831 if (!strchr(SvPVX(libdir), ':')) {
3834 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
3836 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3837 sv_catpv(libdir, ":");
3841 * BEFORE pushing libdir onto @INC we may first push version- and
3842 * archname-specific sub-directories.
3844 if (addsubdirs || addoldvers) {
3845 #ifdef PERL_INC_VERSION_LIST
3846 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3847 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3848 const char **incver;
3855 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3857 while (unix[len-1] == '/') len--; /* Cosmetic */
3858 sv_usepvn(libdir,unix,len);
3861 PerlIO_printf(Perl_error_log,
3862 "Failed to unixify @INC element \"%s\"\n",
3866 #ifdef MACOS_TRADITIONAL
3867 #define PERL_AV_SUFFIX_FMT ""
3868 #define PERL_ARCH_FMT "%s:"
3869 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3871 #define PERL_AV_SUFFIX_FMT "/"
3872 #define PERL_ARCH_FMT "/%s"
3873 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3875 /* .../version/archname if -d .../version/archname */
3876 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3878 (int)PERL_REVISION, (int)PERL_VERSION,
3879 (int)PERL_SUBVERSION, ARCHNAME);
3880 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3881 S_ISDIR(tmpstatbuf.st_mode))
3882 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3884 /* .../version if -d .../version */
3885 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3886 (int)PERL_REVISION, (int)PERL_VERSION,
3887 (int)PERL_SUBVERSION);
3888 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3889 S_ISDIR(tmpstatbuf.st_mode))
3890 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3892 /* .../archname if -d .../archname */
3893 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3894 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3895 S_ISDIR(tmpstatbuf.st_mode))
3896 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3899 #ifdef PERL_INC_VERSION_LIST
3901 for (incver = incverlist; *incver; incver++) {
3902 /* .../xxx if -d .../xxx */
3903 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3904 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3905 S_ISDIR(tmpstatbuf.st_mode))
3906 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3912 /* finally push this lib directory on the end of @INC */
3913 av_push(GvAVn(PL_incgv), libdir);
3917 #ifdef USE_5005THREADS
3918 STATIC struct perl_thread *
3919 S_init_main_thread(pTHX)
3921 #if !defined(PERL_IMPLICIT_CONTEXT)
3922 struct perl_thread *thr;
3926 Newz(53, thr, 1, struct perl_thread);
3927 PL_curcop = &PL_compiling;
3928 thr->interp = PERL_GET_INTERP;
3929 thr->cvcache = newHV();
3930 thr->threadsv = newAV();
3931 /* thr->threadsvp is set when find_threadsv is called */
3932 thr->specific = newAV();
3933 thr->flags = THRf_R_JOINABLE;
3934 MUTEX_INIT(&thr->mutex);
3935 /* Handcraft thrsv similarly to mess_sv */
3936 New(53, PL_thrsv, 1, SV);
3937 Newz(53, xpv, 1, XPV);
3938 SvFLAGS(PL_thrsv) = SVt_PV;
3939 SvANY(PL_thrsv) = (void*)xpv;
3940 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3941 SvPVX(PL_thrsv) = (char*)thr;
3942 SvCUR_set(PL_thrsv, sizeof(thr));
3943 SvLEN_set(PL_thrsv, sizeof(thr));
3944 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3945 thr->oursv = PL_thrsv;
3946 PL_chopset = " \n-";
3949 MUTEX_LOCK(&PL_threads_mutex);
3955 MUTEX_UNLOCK(&PL_threads_mutex);
3957 #ifdef HAVE_THREAD_INTERN
3958 Perl_init_thread_intern(thr);
3961 #ifdef SET_THREAD_SELF
3962 SET_THREAD_SELF(thr);
3964 thr->self = pthread_self();
3965 #endif /* SET_THREAD_SELF */
3969 * These must come after the thread self setting
3970 * because sv_setpvn does SvTAINT and the taint
3971 * fields thread selfness being set.
3973 PL_toptarget = NEWSV(0,0);
3974 sv_upgrade(PL_toptarget, SVt_PVFM);
3975 sv_setpvn(PL_toptarget, "", 0);
3976 PL_bodytarget = NEWSV(0,0);
3977 sv_upgrade(PL_bodytarget, SVt_PVFM);
3978 sv_setpvn(PL_bodytarget, "", 0);
3979 PL_formtarget = PL_bodytarget;
3980 thr->errsv = newSVpvn("", 0);
3981 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3984 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3985 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3986 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3987 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3988 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3989 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3991 PL_reginterp_cnt = 0;
3995 #endif /* USE_5005THREADS */
3998 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
4001 line_t oldline = CopLINE(PL_curcop);
4007 while (AvFILL(paramList) >= 0) {
4008 cv = (CV*)av_shift(paramList);
4010 if (paramList == PL_beginav) {
4011 /* save PL_beginav for compiler */
4012 if (! PL_beginav_save)
4013 PL_beginav_save = newAV();
4014 av_push(PL_beginav_save, (SV*)cv);
4016 else if (paramList == PL_checkav) {
4017 /* save PL_checkav for compiler */
4018 if (! PL_checkav_save)
4019 PL_checkav_save = newAV();
4020 av_push(PL_checkav_save, (SV*)cv);
4025 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4026 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
4032 #ifndef PERL_FLEXIBLE_EXCEPTIONS
4036 (void)SvPV(atsv, len);
4039 PL_curcop = &PL_compiling;
4040 CopLINE_set(PL_curcop, oldline);
4041 if (paramList == PL_beginav)
4042 sv_catpv(atsv, "BEGIN failed--compilation aborted");
4044 Perl_sv_catpvf(aTHX_ atsv,
4045 "%s failed--call queue aborted",
4046 paramList == PL_checkav ? "CHECK"
4047 : paramList == PL_initav ? "INIT"
4049 while (PL_scopestack_ix > oldscope)
4052 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
4059 /* my_exit() was called */
4060 while (PL_scopestack_ix > oldscope)
4063 PL_curstash = PL_defstash;
4064 PL_curcop = &PL_compiling;
4065 CopLINE_set(PL_curcop, oldline);
4067 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4068 if (paramList == PL_beginav)
4069 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4071 Perl_croak(aTHX_ "%s failed--call queue aborted",
4072 paramList == PL_checkav ? "CHECK"
4073 : paramList == PL_initav ? "INIT"
4080 PL_curcop = &PL_compiling;
4081 CopLINE_set(PL_curcop, oldline);
4084 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4092 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4094 S_vcall_list_body(pTHX_ va_list args)
4096 CV *cv = va_arg(args, CV*);
4097 return call_list_body(cv);
4102 S_call_list_body(pTHX_ CV *cv)
4104 PUSHMARK(PL_stack_sp);
4105 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4110 Perl_my_exit(pTHX_ U32 status)
4112 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4113 thr, (unsigned long) status));
4122 STATUS_NATIVE_SET(status);
4129 Perl_my_failure_exit(pTHX)
4132 if (vaxc$errno & 1) {
4133 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4134 STATUS_NATIVE_SET(44);
4137 if (!vaxc$errno && errno) /* unlikely */
4138 STATUS_NATIVE_SET(44);
4140 STATUS_NATIVE_SET(vaxc$errno);
4145 STATUS_POSIX_SET(errno);
4147 exitstatus = STATUS_POSIX >> 8;
4148 if (exitstatus & 255)
4149 STATUS_POSIX_SET(exitstatus);
4151 STATUS_POSIX_SET(255);
4158 S_my_exit_jump(pTHX)
4160 register PERL_CONTEXT *cx;
4165 SvREFCNT_dec(PL_e_script);
4166 PL_e_script = Nullsv;
4169 POPSTACK_TO(PL_mainstack);
4170 if (cxstack_ix >= 0) {
4173 POPBLOCK(cx,PL_curpm);
4181 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4184 p = SvPVX(PL_e_script);
4185 nl = strchr(p, '\n');
4186 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4188 filter_del(read_e_script);
4191 sv_catpvn(buf_sv, p, nl-p);
4192 sv_chop(PL_e_script, nl);