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 */
434 PerlIO_flush((PerlIO*)NULL);
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 PL_curpad = AvARRAY(PL_comppad);
446 op_free(PL_main_root);
447 PL_main_root = Nullop;
449 PL_curcop = &PL_compiling;
450 PL_main_start = Nullop;
451 SvREFCNT_dec(PL_main_cv);
455 /* Tell PerlIO we are about to tear things apart in case
456 we have layers which are using resources that should
460 PerlIO_destruct(aTHX);
462 if (PL_sv_objcount) {
464 * Try to destruct global references. We do this first so that the
465 * destructors and destructees still exist. Some sv's might remain.
466 * Non-referenced objects are on their own.
471 /* unhook hooks which will soon be, or use, destroyed data */
472 SvREFCNT_dec(PL_warnhook);
473 PL_warnhook = Nullsv;
474 SvREFCNT_dec(PL_diehook);
477 /* call exit list functions */
478 while (PL_exitlistlen-- > 0)
479 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
481 Safefree(PL_exitlist);
483 if (destruct_level == 0){
485 DEBUG_P(debprofdump());
487 #if defined(PERLIO_LAYERS)
488 /* No more IO - including error messages ! */
489 PerlIO_cleanup(aTHX);
492 /* The exit() function will do everything that needs doing. */
493 return STATUS_NATIVE_EXPORT;;
496 /* jettison our possibly duplicated environment */
497 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
498 * so we certainly shouldn't free it here
500 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
501 if (environ != PL_origenviron) {
504 for (i = 0; environ[i]; i++)
505 safesysfree(environ[i]);
507 /* Must use safesysfree() when working with environ. */
508 safesysfree(environ);
510 environ = PL_origenviron;
515 /* the syntax tree is shared between clones
516 * so op_free(PL_main_root) only ReREFCNT_dec's
517 * REGEXPs in the parent interpreter
518 * we need to manually ReREFCNT_dec for the clones
521 I32 i = AvFILLp(PL_regex_padav) + 1;
522 SV **ary = AvARRAY(PL_regex_padav);
526 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
528 if (SvFLAGS(resv) & SVf_BREAK) {
529 /* this is PL_reg_curpm, already freed
530 * flag is set in regexec.c:S_regtry
532 SvFLAGS(resv) &= ~SVf_BREAK;
534 else if(SvREPADTMP(resv)) {
535 SvREPADTMP_off(resv);
542 SvREFCNT_dec(PL_regex_padav);
543 PL_regex_padav = Nullav;
547 /* loosen bonds of global variables */
550 (void)PerlIO_close(PL_rsfp);
554 /* Filters for program text */
555 SvREFCNT_dec(PL_rsfp_filters);
556 PL_rsfp_filters = Nullav;
559 PL_preprocess = FALSE;
565 PL_doswitches = FALSE;
566 PL_dowarn = G_WARN_OFF;
567 PL_doextract = FALSE;
568 PL_sawampersand = FALSE; /* must save all match strings */
571 Safefree(PL_inplace);
573 SvREFCNT_dec(PL_patchlevel);
576 SvREFCNT_dec(PL_e_script);
577 PL_e_script = Nullsv;
580 while (--PL_origargc >= 0) {
581 Safefree(PL_origargv[PL_origargc]);
583 Safefree(PL_origargv);
585 /* magical thingies */
587 SvREFCNT_dec(PL_ofs_sv); /* $, */
590 SvREFCNT_dec(PL_ors_sv); /* $\ */
593 SvREFCNT_dec(PL_rs); /* $/ */
596 PL_multiline = 0; /* $* */
597 Safefree(PL_osname); /* $^O */
600 SvREFCNT_dec(PL_statname);
601 PL_statname = Nullsv;
604 /* defgv, aka *_ should be taken care of elsewhere */
606 /* clean up after study() */
607 SvREFCNT_dec(PL_lastscream);
608 PL_lastscream = Nullsv;
609 Safefree(PL_screamfirst);
611 Safefree(PL_screamnext);
615 Safefree(PL_efloatbuf);
616 PL_efloatbuf = Nullch;
619 /* startup and shutdown function lists */
620 SvREFCNT_dec(PL_beginav);
621 SvREFCNT_dec(PL_beginav_save);
622 SvREFCNT_dec(PL_endav);
623 SvREFCNT_dec(PL_checkav);
624 SvREFCNT_dec(PL_initav);
626 PL_beginav_save = Nullav;
631 /* shortcuts just get cleared */
637 PL_argvoutgv = Nullgv;
639 PL_stderrgv = Nullgv;
640 PL_last_in_gv = Nullgv;
642 PL_debstash = Nullhv;
644 /* reset so print() ends up where we expect */
647 SvREFCNT_dec(PL_argvout_stack);
648 PL_argvout_stack = Nullav;
650 SvREFCNT_dec(PL_modglobal);
651 PL_modglobal = Nullhv;
652 SvREFCNT_dec(PL_preambleav);
653 PL_preambleav = Nullav;
654 SvREFCNT_dec(PL_subname);
656 SvREFCNT_dec(PL_linestr);
658 SvREFCNT_dec(PL_pidstatus);
659 PL_pidstatus = Nullhv;
660 SvREFCNT_dec(PL_toptarget);
661 PL_toptarget = Nullsv;
662 SvREFCNT_dec(PL_bodytarget);
663 PL_bodytarget = Nullsv;
664 PL_formtarget = Nullsv;
666 /* free locale stuff */
667 #ifdef USE_LOCALE_COLLATE
668 Safefree(PL_collation_name);
669 PL_collation_name = Nullch;
672 #ifdef USE_LOCALE_NUMERIC
673 Safefree(PL_numeric_name);
674 PL_numeric_name = Nullch;
675 SvREFCNT_dec(PL_numeric_radix_sv);
678 /* clear utf8 character classes */
679 SvREFCNT_dec(PL_utf8_alnum);
680 SvREFCNT_dec(PL_utf8_alnumc);
681 SvREFCNT_dec(PL_utf8_ascii);
682 SvREFCNT_dec(PL_utf8_alpha);
683 SvREFCNT_dec(PL_utf8_space);
684 SvREFCNT_dec(PL_utf8_cntrl);
685 SvREFCNT_dec(PL_utf8_graph);
686 SvREFCNT_dec(PL_utf8_digit);
687 SvREFCNT_dec(PL_utf8_upper);
688 SvREFCNT_dec(PL_utf8_lower);
689 SvREFCNT_dec(PL_utf8_print);
690 SvREFCNT_dec(PL_utf8_punct);
691 SvREFCNT_dec(PL_utf8_xdigit);
692 SvREFCNT_dec(PL_utf8_mark);
693 SvREFCNT_dec(PL_utf8_toupper);
694 SvREFCNT_dec(PL_utf8_totitle);
695 SvREFCNT_dec(PL_utf8_tolower);
696 SvREFCNT_dec(PL_utf8_tofold);
697 SvREFCNT_dec(PL_utf8_idstart);
698 SvREFCNT_dec(PL_utf8_idcont);
699 PL_utf8_alnum = Nullsv;
700 PL_utf8_alnumc = Nullsv;
701 PL_utf8_ascii = Nullsv;
702 PL_utf8_alpha = Nullsv;
703 PL_utf8_space = Nullsv;
704 PL_utf8_cntrl = Nullsv;
705 PL_utf8_graph = Nullsv;
706 PL_utf8_digit = Nullsv;
707 PL_utf8_upper = Nullsv;
708 PL_utf8_lower = Nullsv;
709 PL_utf8_print = Nullsv;
710 PL_utf8_punct = Nullsv;
711 PL_utf8_xdigit = Nullsv;
712 PL_utf8_mark = Nullsv;
713 PL_utf8_toupper = Nullsv;
714 PL_utf8_totitle = Nullsv;
715 PL_utf8_tolower = Nullsv;
716 PL_utf8_tofold = Nullsv;
717 PL_utf8_idstart = Nullsv;
718 PL_utf8_idcont = Nullsv;
720 if (!specialWARN(PL_compiling.cop_warnings))
721 SvREFCNT_dec(PL_compiling.cop_warnings);
722 PL_compiling.cop_warnings = Nullsv;
723 if (!specialCopIO(PL_compiling.cop_io))
724 SvREFCNT_dec(PL_compiling.cop_io);
725 PL_compiling.cop_io = Nullsv;
726 CopFILE_free(&PL_compiling);
727 CopSTASH_free(&PL_compiling);
729 /* Prepare to destruct main symbol table. */
734 SvREFCNT_dec(PL_curstname);
735 PL_curstname = Nullsv;
737 /* clear queued errors */
738 SvREFCNT_dec(PL_errors);
742 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
743 if (PL_scopestack_ix != 0)
744 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
745 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
746 (long)PL_scopestack_ix);
747 if (PL_savestack_ix != 0)
748 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
749 "Unbalanced saves: %ld more saves than restores\n",
750 (long)PL_savestack_ix);
751 if (PL_tmps_floor != -1)
752 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
753 (long)PL_tmps_floor + 1);
754 if (cxstack_ix != -1)
755 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
756 (long)cxstack_ix + 1);
759 /* Now absolutely destruct everything, somehow or other, loops or no. */
760 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
761 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
763 /* the 2 is for PL_fdpid and PL_strtab */
764 while (PL_sv_count > 2 && sv_clean_all())
767 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
768 SvFLAGS(PL_fdpid) |= SVt_PVAV;
769 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
770 SvFLAGS(PL_strtab) |= SVt_PVHV;
772 AvREAL_off(PL_fdpid); /* no surviving entries */
773 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
776 #ifdef HAVE_INTERP_INTERN
780 /* Destruct the global string table. */
782 /* Yell and reset the HeVAL() slots that are still holding refcounts,
783 * so that sv_free() won't fail on them.
791 max = HvMAX(PL_strtab);
792 array = HvARRAY(PL_strtab);
795 if (hent && ckWARN_d(WARN_INTERNAL)) {
796 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
797 "Unbalanced string table refcount: (%d) for \"%s\"",
798 HeVAL(hent) - Nullsv, HeKEY(hent));
799 HeVAL(hent) = Nullsv;
809 SvREFCNT_dec(PL_strtab);
812 /* free the pointer table used for cloning */
813 ptr_table_free(PL_ptr_table);
816 /* free special SVs */
818 SvREFCNT(&PL_sv_yes) = 0;
819 sv_clear(&PL_sv_yes);
820 SvANY(&PL_sv_yes) = NULL;
821 SvFLAGS(&PL_sv_yes) = 0;
823 SvREFCNT(&PL_sv_no) = 0;
825 SvANY(&PL_sv_no) = NULL;
826 SvFLAGS(&PL_sv_no) = 0;
830 for (i=0; i<=2; i++) {
831 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
832 sv_clear(PERL_DEBUG_PAD(i));
833 SvANY(PERL_DEBUG_PAD(i)) = NULL;
834 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
838 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
839 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
841 #if defined(PERLIO_LAYERS)
842 /* No more IO - including error messages ! */
843 PerlIO_cleanup(aTHX);
846 /* sv_undef needs to stay immortal until after PerlIO_cleanup
847 as currently layers use it rather than Nullsv as a marker
848 for no arg - and will try and SvREFCNT_dec it.
850 SvREFCNT(&PL_sv_undef) = 0;
851 SvREADONLY_off(&PL_sv_undef);
853 Safefree(PL_origfilename);
854 Safefree(PL_reg_start_tmp);
856 Safefree(PL_reg_curpm);
857 Safefree(PL_reg_poscache);
858 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
859 Safefree(PL_op_mask);
860 Safefree(PL_psig_ptr);
861 Safefree(PL_psig_name);
862 Safefree(PL_bitcount);
863 Safefree(PL_psig_pend);
865 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
867 DEBUG_P(debprofdump());
868 #ifdef USE_5005THREADS
869 MUTEX_DESTROY(&PL_strtab_mutex);
870 MUTEX_DESTROY(&PL_sv_mutex);
871 MUTEX_DESTROY(&PL_eval_mutex);
872 MUTEX_DESTROY(&PL_cred_mutex);
873 MUTEX_DESTROY(&PL_fdpid_mutex);
874 COND_DESTROY(&PL_eval_cond);
875 #ifdef EMULATE_ATOMIC_REFCOUNTS
876 MUTEX_DESTROY(&PL_svref_mutex);
877 #endif /* EMULATE_ATOMIC_REFCOUNTS */
879 /* As the penultimate thing, free the non-arena SV for thrsv */
880 Safefree(SvPVX(PL_thrsv));
881 Safefree(SvANY(PL_thrsv));
884 #endif /* USE_5005THREADS */
886 #ifdef USE_REENTRANT_API
887 Perl_reentrant_free(aTHX);
892 /* As the absolutely last thing, free the non-arena SV for mess() */
895 /* it could have accumulated taint magic */
896 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
899 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
900 moremagic = mg->mg_moremagic;
901 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
903 Safefree(mg->mg_ptr);
907 /* we know that type >= SVt_PV */
908 (void)SvOOK_off(PL_mess_sv);
909 Safefree(SvPVX(PL_mess_sv));
910 Safefree(SvANY(PL_mess_sv));
911 Safefree(PL_mess_sv);
914 return STATUS_NATIVE_EXPORT;
918 =for apidoc perl_free
920 Releases a Perl interpreter. See L<perlembed>.
928 #if defined(WIN32) || defined(NETWARE)
929 # if defined(PERL_IMPLICIT_SYS)
931 void *host = nw_internal_host;
933 void *host = w32_internal_host;
937 nw_delete_internal_host(host);
939 win32_delete_internal_host(host);
950 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
952 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
953 PL_exitlist[PL_exitlistlen].fn = fn;
954 PL_exitlist[PL_exitlistlen].ptr = ptr;
959 =for apidoc perl_parse
961 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
967 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
972 #ifdef USE_5005THREADS
976 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
979 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
980 setuid perl scripts securely.\n");
986 /* we copy rather than point to argv
987 * since perl_clone will copy and perl_destruct
988 * has no way of knowing if we've made a copy or
992 New(0, PL_origargv, i+1, char*);
993 PL_origargv[i] = '\0';
995 PL_origargv[i] = savepv(argv[i]);
1003 /* Come here if running an undumped a.out. */
1005 PL_origfilename = savepv(argv[0]);
1006 PL_do_undump = FALSE;
1007 cxstack_ix = -1; /* start label stack again */
1009 init_postdump_symbols(argc,argv,env);
1014 PL_curpad = AvARRAY(PL_comppad);
1015 op_free(PL_main_root);
1016 PL_main_root = Nullop;
1018 PL_main_start = Nullop;
1019 SvREFCNT_dec(PL_main_cv);
1020 PL_main_cv = Nullcv;
1023 oldscope = PL_scopestack_ix;
1024 PL_dowarn = G_WARN_OFF;
1026 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1027 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1033 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1034 parse_body(env,xsinit);
1037 call_list(oldscope, PL_checkav);
1044 /* my_exit() was called */
1045 while (PL_scopestack_ix > oldscope)
1048 PL_curstash = PL_defstash;
1050 call_list(oldscope, PL_checkav);
1051 ret = STATUS_NATIVE_EXPORT;
1054 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1062 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1064 S_vparse_body(pTHX_ va_list args)
1066 char **env = va_arg(args, char**);
1067 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1069 return parse_body(env, xsinit);
1074 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1076 int argc = PL_origargc;
1077 char **argv = PL_origargv;
1078 char *scriptname = NULL;
1080 VOL bool dosearch = FALSE;
1081 char *validarg = "";
1085 char *cddir = Nullch;
1087 sv_setpvn(PL_linestr,"",0);
1088 sv = newSVpvn("",0); /* first used for -I flags */
1092 for (argc--,argv++; argc > 0; argc--,argv++) {
1093 if (argv[0][0] != '-' || !argv[0][1])
1097 validarg = " PHOOEY ";
1106 win32_argv2utf8(argc-1, argv+1);
1109 #ifndef PERL_STRICT_CR
1133 if ((s = moreswitches(s)))
1138 if( !PL_tainting ) {
1139 PL_taint_warn = TRUE;
1146 PL_taint_warn = FALSE;
1151 #ifdef MACOS_TRADITIONAL
1152 /* ignore -e for Dev:Pseudo argument */
1153 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1156 if (PL_euid != PL_uid || PL_egid != PL_gid)
1157 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1159 PL_e_script = newSVpvn("",0);
1160 filter_add(read_e_script, NULL);
1163 sv_catpv(PL_e_script, s);
1165 sv_catpv(PL_e_script, argv[1]);
1169 Perl_croak(aTHX_ "No code specified for -e");
1170 sv_catpv(PL_e_script, "\n");
1173 case 'I': /* -I handled both here and in moreswitches() */
1175 if (!*++s && (s=argv[1]) != Nullch) {
1180 STRLEN len = strlen(s);
1181 p = savepvn(s, len);
1182 incpush(p, TRUE, TRUE);
1183 sv_catpvn(sv, "-I", 2);
1184 sv_catpvn(sv, p, len);
1185 sv_catpvn(sv, " ", 1);
1189 Perl_croak(aTHX_ "No directory specified for -I");
1193 PL_preprocess = TRUE;
1203 PL_preambleav = newAV();
1204 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1206 PL_Sv = newSVpv("print myconfig();",0);
1208 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1210 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1212 sv_catpv(PL_Sv,"\" Compile-time options:");
1214 sv_catpv(PL_Sv," DEBUGGING");
1216 # ifdef MULTIPLICITY
1217 sv_catpv(PL_Sv," MULTIPLICITY");
1219 # ifdef USE_5005THREADS
1220 sv_catpv(PL_Sv," USE_5005THREADS");
1222 # ifdef USE_ITHREADS
1223 sv_catpv(PL_Sv," USE_ITHREADS");
1225 # ifdef USE_64_BIT_INT
1226 sv_catpv(PL_Sv," USE_64_BIT_INT");
1228 # ifdef USE_64_BIT_ALL
1229 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1231 # ifdef USE_LONG_DOUBLE
1232 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1234 # ifdef USE_LARGE_FILES
1235 sv_catpv(PL_Sv," USE_LARGE_FILES");
1238 sv_catpv(PL_Sv," USE_SOCKS");
1240 # ifdef PERL_IMPLICIT_CONTEXT
1241 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1243 # ifdef PERL_IMPLICIT_SYS
1244 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1246 sv_catpv(PL_Sv,"\\n\",");
1248 #if defined(LOCAL_PATCH_COUNT)
1249 if (LOCAL_PATCH_COUNT > 0) {
1251 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1252 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1253 if (PL_localpatches[i])
1254 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1258 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1261 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1263 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1266 sv_catpv(PL_Sv, "; \
1268 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1271 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1274 print \" \\%ENV:\\n @env\\n\" if @env; \
1275 print \" \\@INC:\\n @INC\\n\";");
1278 PL_Sv = newSVpv("config_vars(qw(",0);
1279 sv_catpv(PL_Sv, ++s);
1280 sv_catpv(PL_Sv, "))");
1283 av_push(PL_preambleav, PL_Sv);
1284 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1287 PL_doextract = TRUE;
1295 if (!*++s || isSPACE(*s)) {
1299 /* catch use of gnu style long options */
1300 if (strEQ(s, "version")) {
1304 if (strEQ(s, "help")) {
1311 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1317 #ifndef SECURE_INTERNAL_GETENV
1320 (s = PerlEnv_getenv("PERL5OPT")))
1325 if (*s == '-' && *(s+1) == 'T') {
1327 PL_taint_warn = FALSE;
1330 char *popt_copy = Nullch;
1343 if (!strchr("DIMUdmtw", *s))
1344 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1348 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1349 s = popt_copy + (s - popt);
1350 d = popt_copy + (d - popt);
1357 if( !PL_tainting ) {
1358 PL_taint_warn = TRUE;
1368 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1369 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1373 scriptname = argv[0];
1376 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1378 else if (scriptname == Nullch) {
1380 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1388 open_script(scriptname,dosearch,sv,&fdscript);
1390 validate_suid(validarg, scriptname,fdscript);
1393 #if defined(SIGCHLD) || defined(SIGCLD)
1396 # define SIGCHLD SIGCLD
1398 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1399 if (sigstate == SIG_IGN) {
1400 if (ckWARN(WARN_SIGNAL))
1401 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1402 "Can't ignore signal CHLD, forcing to default");
1403 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1409 #ifdef MACOS_TRADITIONAL
1410 if (PL_doextract || gMacPerl_AlwaysExtract) {
1415 if (cddir && PerlDir_chdir(cddir) < 0)
1416 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1420 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1421 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1422 CvUNIQUE_on(PL_compcv);
1424 PL_comppad = newAV();
1425 av_push(PL_comppad, Nullsv);
1426 PL_curpad = AvARRAY(PL_comppad);
1427 PL_comppad_name = newAV();
1428 PL_comppad_name_fill = 0;
1429 PL_min_intro_pending = 0;
1431 #ifdef USE_5005THREADS
1432 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1433 PL_curpad[0] = (SV*)newAV();
1434 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1435 CvOWNER(PL_compcv) = 0;
1436 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1437 MUTEX_INIT(CvMUTEXP(PL_compcv));
1438 #endif /* USE_5005THREADS */
1440 comppadlist = newAV();
1441 AvREAL_off(comppadlist);
1442 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1443 av_store(comppadlist, 1, (SV*)PL_comppad);
1444 CvPADLIST(PL_compcv) = comppadlist;
1447 boot_core_UNIVERSAL();
1449 boot_core_xsutils();
1453 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1455 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1461 # ifdef HAS_SOCKS5_INIT
1462 socks5_init(argv[0]);
1468 init_predump_symbols();
1469 /* init_postdump_symbols not currently designed to be called */
1470 /* more than once (ENV isn't cleared first, for example) */
1471 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1473 init_postdump_symbols(argc,argv,env);
1475 if (PL_wantutf8) { /* Requires init_predump_symbols(). */
1479 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1480 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1481 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1482 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1483 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1484 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1485 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1486 sv_setpvn(sv, ":utf8\0:utf8", 11);
1493 /* now parse the script */
1495 SETERRNO(0,SS$_NORMAL);
1497 #ifdef MACOS_TRADITIONAL
1498 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1500 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1502 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1503 MacPerl_MPWFileName(PL_origfilename));
1507 if (yyparse() || PL_error_count) {
1509 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1511 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1516 CopLINE_set(PL_curcop, 0);
1517 PL_curstash = PL_defstash;
1518 PL_preprocess = FALSE;
1520 SvREFCNT_dec(PL_e_script);
1521 PL_e_script = Nullsv;
1525 Not sure that this is still the right place to do this now that we
1526 no longer use PL_nrs. HVDS 2001/09/09
1528 sv_setsv(get_sv("/", TRUE), PL_rs);
1534 SAVECOPFILE(PL_curcop);
1535 SAVECOPLINE(PL_curcop);
1536 gv_check(PL_defstash);
1543 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1544 dump_mstats("after compilation:");
1553 =for apidoc perl_run
1555 Tells a Perl interpreter to run. See L<perlembed>.
1566 #ifdef USE_5005THREADS
1570 oldscope = PL_scopestack_ix;
1575 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1577 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1583 cxstack_ix = -1; /* start context stack again */
1585 case 0: /* normal completion */
1586 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1591 case 2: /* my_exit() */
1592 while (PL_scopestack_ix > oldscope)
1595 PL_curstash = PL_defstash;
1596 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1597 PL_endav && !PL_minus_c)
1598 call_list(oldscope, PL_endav);
1600 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1601 dump_mstats("after execution: ");
1603 ret = STATUS_NATIVE_EXPORT;
1607 POPSTACK_TO(PL_mainstack);
1610 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1620 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1622 S_vrun_body(pTHX_ va_list args)
1624 I32 oldscope = va_arg(args, I32);
1626 return run_body(oldscope);
1632 S_run_body(pTHX_ I32 oldscope)
1634 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1635 PL_sawampersand ? "Enabling" : "Omitting"));
1637 if (!PL_restartop) {
1638 DEBUG_x(dump_all());
1639 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1640 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1644 #ifdef MACOS_TRADITIONAL
1645 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1647 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1651 if (PERLDB_SINGLE && PL_DBsingle)
1652 sv_setiv(PL_DBsingle, 1);
1654 call_list(oldscope, PL_initav);
1660 PL_op = PL_restartop;
1664 else if (PL_main_start) {
1665 CvDEPTH(PL_main_cv) = 1;
1666 PL_op = PL_main_start;
1676 =head1 SV Manipulation Functions
1678 =for apidoc p||get_sv
1680 Returns the SV of the specified Perl scalar. If C<create> is set and the
1681 Perl variable does not exist then it will be created. If C<create> is not
1682 set and the variable does not exist then NULL is returned.
1688 Perl_get_sv(pTHX_ const char *name, I32 create)
1691 #ifdef USE_5005THREADS
1692 if (name[1] == '\0' && !isALPHA(name[0])) {
1693 PADOFFSET tmp = find_threadsv(name);
1694 if (tmp != NOT_IN_PAD)
1695 return THREADSV(tmp);
1697 #endif /* USE_5005THREADS */
1698 gv = gv_fetchpv(name, create, SVt_PV);
1705 =head1 Array Manipulation Functions
1707 =for apidoc p||get_av
1709 Returns the AV of the specified Perl array. If C<create> is set and the
1710 Perl variable does not exist then it will be created. If C<create> is not
1711 set and the variable does not exist then NULL is returned.
1717 Perl_get_av(pTHX_ const char *name, I32 create)
1719 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1728 =head1 Hash Manipulation Functions
1730 =for apidoc p||get_hv
1732 Returns the HV of the specified Perl hash. If C<create> is set and the
1733 Perl variable does not exist then it will be created. If C<create> is not
1734 set and the variable does not exist then NULL is returned.
1740 Perl_get_hv(pTHX_ const char *name, I32 create)
1742 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1751 =head1 CV Manipulation Functions
1753 =for apidoc p||get_cv
1755 Returns the CV of the specified Perl subroutine. If C<create> is set and
1756 the Perl subroutine does not exist then it will be declared (which has the
1757 same effect as saying C<sub name;>). If C<create> is not set and the
1758 subroutine does not exist then NULL is returned.
1764 Perl_get_cv(pTHX_ const char *name, I32 create)
1766 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1767 /* XXX unsafe for threads if eval_owner isn't held */
1768 /* XXX this is probably not what they think they're getting.
1769 * It has the same effect as "sub name;", i.e. just a forward
1771 if (create && !GvCVu(gv))
1772 return newSUB(start_subparse(FALSE, 0),
1773 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1781 /* Be sure to refetch the stack pointer after calling these routines. */
1785 =head1 Callback Functions
1787 =for apidoc p||call_argv
1789 Performs a callback to the specified Perl sub. See L<perlcall>.
1795 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1797 /* See G_* flags in cop.h */
1798 /* null terminated arg list */
1805 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1810 return call_pv(sub_name, flags);
1814 =for apidoc p||call_pv
1816 Performs a callback to the specified Perl sub. See L<perlcall>.
1822 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1823 /* name of the subroutine */
1824 /* See G_* flags in cop.h */
1826 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1830 =for apidoc p||call_method
1832 Performs a callback to the specified Perl method. The blessed object must
1833 be on the stack. See L<perlcall>.
1839 Perl_call_method(pTHX_ const char *methname, I32 flags)
1840 /* name of the subroutine */
1841 /* See G_* flags in cop.h */
1843 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1846 /* May be called with any of a CV, a GV, or an SV containing the name. */
1848 =for apidoc p||call_sv
1850 Performs a callback to the Perl sub whose name is in the SV. See
1857 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1858 /* See G_* flags in cop.h */
1861 LOGOP myop; /* fake syntax tree node */
1864 volatile I32 retval = 0;
1866 bool oldcatch = CATCH_GET;
1871 if (flags & G_DISCARD) {
1876 Zero(&myop, 1, LOGOP);
1877 myop.op_next = Nullop;
1878 if (!(flags & G_NOARGS))
1879 myop.op_flags |= OPf_STACKED;
1880 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1881 (flags & G_ARRAY) ? OPf_WANT_LIST :
1886 EXTEND(PL_stack_sp, 1);
1887 *++PL_stack_sp = sv;
1889 oldscope = PL_scopestack_ix;
1891 if (PERLDB_SUB && PL_curstash != PL_debstash
1892 /* Handle first BEGIN of -d. */
1893 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1894 /* Try harder, since this may have been a sighandler, thus
1895 * curstash may be meaningless. */
1896 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1897 && !(flags & G_NODEBUG))
1898 PL_op->op_private |= OPpENTERSUB_DB;
1900 if (flags & G_METHOD) {
1901 Zero(&method_op, 1, UNOP);
1902 method_op.op_next = PL_op;
1903 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1904 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1905 PL_op = (OP*)&method_op;
1908 if (!(flags & G_EVAL)) {
1910 call_body((OP*)&myop, FALSE);
1911 retval = PL_stack_sp - (PL_stack_base + oldmark);
1912 CATCH_SET(oldcatch);
1915 myop.op_other = (OP*)&myop;
1917 /* we're trying to emulate pp_entertry() here */
1919 register PERL_CONTEXT *cx;
1920 I32 gimme = GIMME_V;
1925 push_return(Nullop);
1926 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1928 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1930 PL_in_eval = EVAL_INEVAL;
1931 if (flags & G_KEEPERR)
1932 PL_in_eval |= EVAL_KEEPERR;
1938 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1940 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1947 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1949 call_body((OP*)&myop, FALSE);
1951 retval = PL_stack_sp - (PL_stack_base + oldmark);
1952 if (!(flags & G_KEEPERR))
1959 /* my_exit() was called */
1960 PL_curstash = PL_defstash;
1963 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1964 Perl_croak(aTHX_ "Callback called exit");
1969 PL_op = PL_restartop;
1973 PL_stack_sp = PL_stack_base + oldmark;
1974 if (flags & G_ARRAY)
1978 *++PL_stack_sp = &PL_sv_undef;
1983 if (PL_scopestack_ix > oldscope) {
1987 register PERL_CONTEXT *cx;
1999 if (flags & G_DISCARD) {
2000 PL_stack_sp = PL_stack_base + oldmark;
2009 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2011 S_vcall_body(pTHX_ va_list args)
2013 OP *myop = va_arg(args, OP*);
2014 int is_eval = va_arg(args, int);
2016 call_body(myop, is_eval);
2022 S_call_body(pTHX_ OP *myop, int is_eval)
2024 if (PL_op == myop) {
2026 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
2028 PL_op = Perl_pp_entersub(aTHX); /* this does */
2034 /* Eval a string. The G_EVAL flag is always assumed. */
2037 =for apidoc p||eval_sv
2039 Tells Perl to C<eval> the string in the SV.
2045 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
2047 /* See G_* flags in cop.h */
2050 UNOP myop; /* fake syntax tree node */
2051 volatile I32 oldmark = SP - PL_stack_base;
2052 volatile I32 retval = 0;
2058 if (flags & G_DISCARD) {
2065 Zero(PL_op, 1, UNOP);
2066 EXTEND(PL_stack_sp, 1);
2067 *++PL_stack_sp = sv;
2068 oldscope = PL_scopestack_ix;
2070 if (!(flags & G_NOARGS))
2071 myop.op_flags = OPf_STACKED;
2072 myop.op_next = Nullop;
2073 myop.op_type = OP_ENTEREVAL;
2074 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
2075 (flags & G_ARRAY) ? OPf_WANT_LIST :
2077 if (flags & G_KEEPERR)
2078 myop.op_flags |= OPf_SPECIAL;
2080 #ifdef PERL_FLEXIBLE_EXCEPTIONS
2082 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2089 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2091 call_body((OP*)&myop,TRUE);
2093 retval = PL_stack_sp - (PL_stack_base + oldmark);
2094 if (!(flags & G_KEEPERR))
2101 /* my_exit() was called */
2102 PL_curstash = PL_defstash;
2105 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2106 Perl_croak(aTHX_ "Callback called exit");
2111 PL_op = PL_restartop;
2115 PL_stack_sp = PL_stack_base + oldmark;
2116 if (flags & G_ARRAY)
2120 *++PL_stack_sp = &PL_sv_undef;
2126 if (flags & G_DISCARD) {
2127 PL_stack_sp = PL_stack_base + oldmark;
2137 =for apidoc p||eval_pv
2139 Tells Perl to C<eval> the given string and return an SV* result.
2145 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2148 SV* sv = newSVpv(p, 0);
2150 eval_sv(sv, G_SCALAR);
2157 if (croak_on_error && SvTRUE(ERRSV)) {
2159 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2165 /* Require a module. */
2168 =head1 Embedding Functions
2170 =for apidoc p||require_pv
2172 Tells Perl to C<require> the file named by the string argument. It is
2173 analogous to the Perl code C<eval "require '$file'">. It's even
2174 implemented that way; consider using Perl_load_module instead.
2179 Perl_require_pv(pTHX_ const char *pv)
2183 PUSHSTACKi(PERLSI_REQUIRE);
2185 sv = sv_newmortal();
2186 sv_setpv(sv, "require '");
2189 eval_sv(sv, G_DISCARD);
2195 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2199 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2200 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2204 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2206 /* This message really ought to be max 23 lines.
2207 * Removed -h because the user already knows that option. Others? */
2209 static char *usage_msg[] = {
2210 "-0[octal] specify record separator (\\0, if no argument)",
2211 "-a autosplit mode with -n or -p (splits $_ into @F)",
2212 "-C enable native wide character system interfaces",
2213 "-c check syntax only (runs BEGIN and CHECK blocks)",
2214 "-d[:debugger] run program under debugger",
2215 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2216 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2217 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2218 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2219 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2220 "-l[octal] enable line ending processing, specifies line terminator",
2221 "-[mM][-]module execute `use/no module...' before executing program",
2222 "-n assume 'while (<>) { ... }' loop around program",
2223 "-p assume loop like -n but print line also, like sed",
2224 "-P run program through C preprocessor before compilation",
2225 "-s enable rudimentary parsing for switches after programfile",
2226 "-S look for programfile using PATH environment variable",
2227 "-T enable tainting checks",
2228 "-t enable tainting warnings",
2229 "-u dump core after parsing program",
2230 "-U allow unsafe operations",
2231 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2232 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2233 "-w enable many useful warnings (RECOMMENDED)",
2234 "-W enable all warnings",
2235 "-X disable all warnings",
2236 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2240 char **p = usage_msg;
2242 PerlIO_printf(PerlIO_stdout(),
2243 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2246 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2249 /* This routine handles any switches that can be given during run */
2252 Perl_moreswitches(pTHX_ char *s)
2262 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2263 SvREFCNT_dec(PL_rs);
2264 if (rschar & ~((U8)~0))
2265 PL_rs = &PL_sv_undef;
2266 else if (!rschar && numlen >= 2)
2267 PL_rs = newSVpvn("", 0);
2269 char ch = (char)rschar;
2270 PL_rs = newSVpvn(&ch, 1);
2275 PL_widesyscalls = TRUE;
2281 while (*s && !isSPACE(*s)) ++s;
2283 PL_splitstr = savepv(PL_splitstr);
2296 /* The following permits -d:Mod to accepts arguments following an =
2297 in the fashion that -MSome::Mod does. */
2298 if (*s == ':' || *s == '=') {
2301 sv = newSVpv("use Devel::", 0);
2303 /* We now allow -d:Module=Foo,Bar */
2304 while(isALNUM(*s) || *s==':') ++s;
2306 sv_catpv(sv, start);
2308 sv_catpvn(sv, start, s-start);
2309 sv_catpv(sv, " split(/,/,q{");
2314 my_setenv("PERL5DB", SvPV(sv, PL_na));
2317 PL_perldb = PERLDB_ALL;
2325 if (isALPHA(s[1])) {
2326 /* if adding extra options, remember to update DEBUG_MASK */
2327 static char debopts[] = "psltocPmfrxuLHXDSTRJ";
2330 for (s++; *s && (d = strchr(debopts,*s)); s++)
2331 PL_debug |= 1 << (d - debopts);
2334 PL_debug = atoi(s+1);
2335 for (s++; isDIGIT(*s); s++) ;
2338 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2339 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2340 "-Dp not implemented on this platform\n");
2342 PL_debug |= DEBUG_TOP_FLAG;
2343 #else /* !DEBUGGING */
2344 if (ckWARN_d(WARN_DEBUGGING))
2345 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2346 "Recompile perl with -DDEBUGGING to use -D switch\n");
2347 for (s++; isALNUM(*s); s++) ;
2353 usage(PL_origargv[0]);
2357 Safefree(PL_inplace);
2358 PL_inplace = savepv(s+1);
2360 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2363 if (*s == '-') /* Additional switches on #! line. */
2367 case 'I': /* -I handled both here and in parse_body() */
2370 while (*s && isSPACE(*s))
2375 /* ignore trailing spaces (possibly followed by other switches) */
2377 for (e = p; *e && !isSPACE(*e); e++) ;
2381 } while (*p && *p != '-');
2382 e = savepvn(s, e-s);
2383 incpush(e, TRUE, TRUE);
2390 Perl_croak(aTHX_ "No directory specified for -I");
2396 SvREFCNT_dec(PL_ors_sv);
2401 PL_ors_sv = newSVpvn("\n",1);
2402 numlen = 3 + (*s == '0');
2403 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2407 if (RsPARA(PL_rs)) {
2408 PL_ors_sv = newSVpvn("\n\n",2);
2411 PL_ors_sv = newSVsv(PL_rs);
2416 forbid_setid("-M"); /* XXX ? */
2419 forbid_setid("-m"); /* XXX ? */
2424 /* -M-foo == 'no foo' */
2425 if (*s == '-') { use = "no "; ++s; }
2426 sv = newSVpv(use,0);
2428 /* We allow -M'Module qw(Foo Bar)' */
2429 while(isALNUM(*s) || *s==':') ++s;
2431 sv_catpv(sv, start);
2432 if (*(start-1) == 'm') {
2434 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2435 sv_catpv( sv, " ()");
2439 Perl_croak(aTHX_ "Module name required with -%c option",
2441 sv_catpvn(sv, start, s-start);
2442 sv_catpv(sv, " split(/,/,q{");
2448 PL_preambleav = newAV();
2449 av_push(PL_preambleav, sv);
2452 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2464 PL_doswitches = TRUE;
2469 Perl_croak(aTHX_ "Too late for \"-t\" option");
2474 Perl_croak(aTHX_ "Too late for \"-T\" option");
2478 #ifdef MACOS_TRADITIONAL
2479 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2481 PL_do_undump = TRUE;
2490 PerlIO_printf(PerlIO_stdout(),
2491 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2492 PL_patchlevel, ARCHNAME));
2494 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2495 PerlIO_printf(PerlIO_stdout(),
2496 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2497 PerlIO_printf(PerlIO_stdout(),
2498 Perl_form(aTHX_ " built under %s at %s %s\n",
2499 OSNAME, __DATE__, __TIME__));
2500 PerlIO_printf(PerlIO_stdout(),
2501 Perl_form(aTHX_ " OS Specific Release: %s\n",
2505 #if defined(LOCAL_PATCH_COUNT)
2506 if (LOCAL_PATCH_COUNT > 0)
2507 PerlIO_printf(PerlIO_stdout(),
2508 "\n(with %d registered patch%s, "
2509 "see perl -V for more detail)",
2510 (int)LOCAL_PATCH_COUNT,
2511 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2514 PerlIO_printf(PerlIO_stdout(),
2515 "\n\nCopyright 1987-2002, Larry Wall\n");
2516 #ifdef MACOS_TRADITIONAL
2517 PerlIO_printf(PerlIO_stdout(),
2518 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
2519 "maintained by Chris Nandor\n");
2522 PerlIO_printf(PerlIO_stdout(),
2523 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2526 PerlIO_printf(PerlIO_stdout(),
2527 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2528 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2531 PerlIO_printf(PerlIO_stdout(),
2532 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2533 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
2536 PerlIO_printf(PerlIO_stdout(),
2537 "atariST series port, ++jrb bammi@cadence.com\n");
2540 PerlIO_printf(PerlIO_stdout(),
2541 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2544 PerlIO_printf(PerlIO_stdout(),
2545 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
2548 PerlIO_printf(PerlIO_stdout(),
2549 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2552 PerlIO_printf(PerlIO_stdout(),
2553 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
2556 PerlIO_printf(PerlIO_stdout(),
2557 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2560 PerlIO_printf(PerlIO_stdout(),
2561 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2564 PerlIO_printf(PerlIO_stdout(),
2565 "MiNT port by Guido Flohr, 1997-1999\n");
2568 PerlIO_printf(PerlIO_stdout(),
2569 "EPOC port by Olaf Flebbe, 1999-2002\n");
2572 printf("WINCE port by Rainer Keuchel, 2001-2002\n");
2573 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2576 #ifdef BINARY_BUILD_NOTICE
2577 BINARY_BUILD_NOTICE;
2579 PerlIO_printf(PerlIO_stdout(),
2581 Perl may be copied only under the terms of either the Artistic License or the\n\
2582 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2583 Complete documentation for Perl, including FAQ lists, should be found on\n\
2584 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2585 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2588 if (! (PL_dowarn & G_WARN_ALL_MASK))
2589 PL_dowarn |= G_WARN_ON;
2593 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2594 if (!specialWARN(PL_compiling.cop_warnings))
2595 SvREFCNT_dec(PL_compiling.cop_warnings);
2596 PL_compiling.cop_warnings = pWARN_ALL ;
2600 PL_dowarn = G_WARN_ALL_OFF;
2601 if (!specialWARN(PL_compiling.cop_warnings))
2602 SvREFCNT_dec(PL_compiling.cop_warnings);
2603 PL_compiling.cop_warnings = pWARN_NONE ;
2608 if (s[1] == '-') /* Additional switches on #! line. */
2613 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2619 #ifdef ALTERNATE_SHEBANG
2620 case 'S': /* OS/2 needs -S on "extproc" line. */
2628 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2633 /* compliments of Tom Christiansen */
2635 /* unexec() can be found in the Gnu emacs distribution */
2636 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2639 Perl_my_unexec(pTHX)
2647 prog = newSVpv(BIN_EXP, 0);
2648 sv_catpv(prog, "/perl");
2649 file = newSVpv(PL_origfilename, 0);
2650 sv_catpv(file, ".perldump");
2652 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2653 /* unexec prints msg to stderr in case of failure */
2654 PerlProc_exit(status);
2657 # include <lib$routines.h>
2658 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2660 ABORT(); /* for use with undump */
2665 /* initialize curinterp */
2671 # define PERLVAR(var,type)
2672 # define PERLVARA(var,n,type)
2673 # if defined(PERL_IMPLICIT_CONTEXT)
2674 # if defined(USE_5005THREADS)
2675 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2676 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2677 # else /* !USE_5005THREADS */
2678 # define PERLVARI(var,type,init) aTHX->var = init;
2679 # define PERLVARIC(var,type,init) aTHX->var = init;
2680 # endif /* USE_5005THREADS */
2682 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2683 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2685 # include "intrpvar.h"
2686 # ifndef USE_5005THREADS
2687 # include "thrdvar.h"
2694 # define PERLVAR(var,type)
2695 # define PERLVARA(var,n,type)
2696 # define PERLVARI(var,type,init) PL_##var = init;
2697 # define PERLVARIC(var,type,init) PL_##var = init;
2698 # include "intrpvar.h"
2699 # ifndef USE_5005THREADS
2700 # include "thrdvar.h"
2711 S_init_main_stash(pTHX)
2715 PL_curstash = PL_defstash = newHV();
2716 PL_curstname = newSVpvn("main",4);
2717 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2718 SvREFCNT_dec(GvHV(gv));
2719 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2721 HvNAME(PL_defstash) = savepv("main");
2722 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2723 GvMULTI_on(PL_incgv);
2724 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2725 GvMULTI_on(PL_hintgv);
2726 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2727 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2728 GvMULTI_on(PL_errgv);
2729 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2730 GvMULTI_on(PL_replgv);
2731 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2732 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2733 sv_setpvn(ERRSV, "", 0);
2734 PL_curstash = PL_defstash;
2735 CopSTASH_set(&PL_compiling, PL_defstash);
2736 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2737 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2738 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2739 /* We must init $/ before switches are processed. */
2740 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2744 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2748 char *cpp_discard_flag;
2754 PL_origfilename = savepv("-e");
2757 /* if find_script() returns, it returns a malloc()-ed value */
2758 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2760 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2761 char *s = scriptname + 8;
2762 *fdscript = atoi(s);
2766 scriptname = savepv(s + 1);
2767 Safefree(PL_origfilename);
2768 PL_origfilename = scriptname;
2773 CopFILE_free(PL_curcop);
2774 CopFILE_set(PL_curcop, PL_origfilename);
2775 if (strEQ(PL_origfilename,"-"))
2777 if (*fdscript >= 0) {
2778 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2779 # if defined(HAS_FCNTL) && defined(F_SETFD)
2781 /* ensure close-on-exec */
2782 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2785 else if (PL_preprocess) {
2786 char *cpp_cfg = CPPSTDIN;
2787 SV *cpp = newSVpvn("",0);
2788 SV *cmd = NEWSV(0,0);
2790 if (strEQ(cpp_cfg, "cppstdin"))
2791 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2792 sv_catpv(cpp, cpp_cfg);
2795 sv_catpvn(sv, "-I", 2);
2796 sv_catpv(sv,PRIVLIB_EXP);
2799 DEBUG_P(PerlIO_printf(Perl_debug_log,
2800 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2801 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2803 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2810 cpp_discard_flag = "";
2812 cpp_discard_flag = "-C";
2816 perl = os2_execname(aTHX);
2818 perl = PL_origargv[0];
2822 /* This strips off Perl comments which might interfere with
2823 the C pre-processor, including #!. #line directives are
2824 deliberately stripped to avoid confusion with Perl's version
2825 of #line. FWP played some golf with it so it will fit
2826 into VMS's 255 character buffer.
2829 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2831 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2833 Perl_sv_setpvf(aTHX_ cmd, "\
2834 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2835 perl, quote, code, quote, scriptname, cpp,
2836 cpp_discard_flag, sv, CPPMINUS);
2838 PL_doextract = FALSE;
2839 # ifdef IAMSUID /* actually, this is caught earlier */
2840 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2842 (void)seteuid(PL_uid); /* musn't stay setuid root */
2844 # ifdef HAS_SETREUID
2845 (void)setreuid((Uid_t)-1, PL_uid);
2847 # ifdef HAS_SETRESUID
2848 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2850 PerlProc_setuid(PL_uid);
2854 if (PerlProc_geteuid() != PL_uid)
2855 Perl_croak(aTHX_ "Can't do seteuid!\n");
2857 # endif /* IAMSUID */
2859 DEBUG_P(PerlIO_printf(Perl_debug_log,
2860 "PL_preprocess: cmd=\"%s\"\n",
2863 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2867 else if (!*scriptname) {
2868 forbid_setid("program input from stdin");
2869 PL_rsfp = PerlIO_stdin();
2872 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2873 # if defined(HAS_FCNTL) && defined(F_SETFD)
2875 /* ensure close-on-exec */
2876 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2881 # ifndef IAMSUID /* in case script is not readable before setuid */
2883 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2884 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2887 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2888 BIN_EXP, (int)PERL_REVISION,
2890 (int)PERL_SUBVERSION), PL_origargv);
2891 Perl_croak(aTHX_ "Can't do setuid\n");
2897 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2900 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2901 CopFILE(PL_curcop), Strerror(errno));
2907 * I_SYSSTATVFS HAS_FSTATVFS
2909 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2910 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2911 * here so that metaconfig picks them up. */
2915 S_fd_on_nosuid_fs(pTHX_ int fd)
2917 int check_okay = 0; /* able to do all the required sys/libcalls */
2918 int on_nosuid = 0; /* the fd is on a nosuid fs */
2920 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2921 * fstatvfs() is UNIX98.
2922 * fstatfs() is 4.3 BSD.
2923 * ustat()+getmnt() is pre-4.3 BSD.
2924 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2925 * an irrelevant filesystem while trying to reach the right one.
2928 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2930 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2931 defined(HAS_FSTATVFS)
2932 # define FD_ON_NOSUID_CHECK_OKAY
2933 struct statvfs stfs;
2935 check_okay = fstatvfs(fd, &stfs) == 0;
2936 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2937 # endif /* fstatvfs */
2939 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2940 defined(PERL_MOUNT_NOSUID) && \
2941 defined(HAS_FSTATFS) && \
2942 defined(HAS_STRUCT_STATFS) && \
2943 defined(HAS_STRUCT_STATFS_F_FLAGS)
2944 # define FD_ON_NOSUID_CHECK_OKAY
2947 check_okay = fstatfs(fd, &stfs) == 0;
2948 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2949 # endif /* fstatfs */
2951 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2952 defined(PERL_MOUNT_NOSUID) && \
2953 defined(HAS_FSTAT) && \
2954 defined(HAS_USTAT) && \
2955 defined(HAS_GETMNT) && \
2956 defined(HAS_STRUCT_FS_DATA) && \
2958 # define FD_ON_NOSUID_CHECK_OKAY
2961 if (fstat(fd, &fdst) == 0) {
2963 if (ustat(fdst.st_dev, &us) == 0) {
2965 /* NOSTAT_ONE here because we're not examining fields which
2966 * vary between that case and STAT_ONE. */
2967 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2968 size_t cmplen = sizeof(us.f_fname);
2969 if (sizeof(fsd.fd_req.path) < cmplen)
2970 cmplen = sizeof(fsd.fd_req.path);
2971 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2972 fdst.st_dev == fsd.fd_req.dev) {
2974 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2980 # endif /* fstat+ustat+getmnt */
2982 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2983 defined(HAS_GETMNTENT) && \
2984 defined(HAS_HASMNTOPT) && \
2985 defined(MNTOPT_NOSUID)
2986 # define FD_ON_NOSUID_CHECK_OKAY
2987 FILE *mtab = fopen("/etc/mtab", "r");
2988 struct mntent *entry;
2991 if (mtab && (fstat(fd, &stb) == 0)) {
2992 while (entry = getmntent(mtab)) {
2993 if (stat(entry->mnt_dir, &fsb) == 0
2994 && fsb.st_dev == stb.st_dev)
2996 /* found the filesystem */
2998 if (hasmntopt(entry, MNTOPT_NOSUID))
3001 } /* A single fs may well fail its stat(). */
3006 # endif /* getmntent+hasmntopt */
3009 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
3012 #endif /* IAMSUID */
3015 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
3021 /* do we need to emulate setuid on scripts? */
3023 /* This code is for those BSD systems that have setuid #! scripts disabled
3024 * in the kernel because of a security problem. Merely defining DOSUID
3025 * in perl will not fix that problem, but if you have disabled setuid
3026 * scripts in the kernel, this will attempt to emulate setuid and setgid
3027 * on scripts that have those now-otherwise-useless bits set. The setuid
3028 * root version must be called suidperl or sperlN.NNN. If regular perl
3029 * discovers that it has opened a setuid script, it calls suidperl with
3030 * the same argv that it had. If suidperl finds that the script it has
3031 * just opened is NOT setuid root, it sets the effective uid back to the
3032 * uid. We don't just make perl setuid root because that loses the
3033 * effective uid we had before invoking perl, if it was different from the
3036 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3037 * be defined in suidperl only. suidperl must be setuid root. The
3038 * Configure script will set this up for you if you want it.
3044 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3045 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3046 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3051 #ifndef HAS_SETREUID
3052 /* On this access check to make sure the directories are readable,
3053 * there is actually a small window that the user could use to make
3054 * filename point to an accessible directory. So there is a faint
3055 * chance that someone could execute a setuid script down in a
3056 * non-accessible directory. I don't know what to do about that.
3057 * But I don't think it's too important. The manual lies when
3058 * it says access() is useful in setuid programs.
3060 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3061 Perl_croak(aTHX_ "Permission denied");
3063 /* If we can swap euid and uid, then we can determine access rights
3064 * with a simple stat of the file, and then compare device and
3065 * inode to make sure we did stat() on the same file we opened.
3066 * Then we just have to make sure he or she can execute it.
3073 setreuid(PL_euid,PL_uid) < 0
3076 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3079 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3080 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3081 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3082 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3083 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3084 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3085 Perl_croak(aTHX_ "Permission denied");
3087 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3088 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3089 (void)PerlIO_close(PL_rsfp);
3090 Perl_croak(aTHX_ "Permission denied\n");
3094 setreuid(PL_uid,PL_euid) < 0
3096 # if defined(HAS_SETRESUID)
3097 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3100 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3101 Perl_croak(aTHX_ "Can't reswap uid and euid");
3102 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3103 Perl_croak(aTHX_ "Permission denied\n");
3105 #endif /* HAS_SETREUID */
3106 #endif /* IAMSUID */
3108 if (!S_ISREG(PL_statbuf.st_mode))
3109 Perl_croak(aTHX_ "Permission denied");
3110 if (PL_statbuf.st_mode & S_IWOTH)
3111 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3112 PL_doswitches = FALSE; /* -s is insecure in suid */
3113 CopLINE_inc(PL_curcop);
3114 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3115 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3116 Perl_croak(aTHX_ "No #! line");
3117 s = SvPV(PL_linestr,n_a)+2;
3119 while (!isSPACE(*s)) s++;
3120 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3121 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3122 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3123 Perl_croak(aTHX_ "Not a perl script");
3124 while (*s == ' ' || *s == '\t') s++;
3126 * #! arg must be what we saw above. They can invoke it by
3127 * mentioning suidperl explicitly, but they may not add any strange
3128 * arguments beyond what #! says if they do invoke suidperl that way.
3130 len = strlen(validarg);
3131 if (strEQ(validarg," PHOOEY ") ||
3132 strnNE(s,validarg,len) || !isSPACE(s[len]))
3133 Perl_croak(aTHX_ "Args must match #! line");
3136 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3137 PL_euid == PL_statbuf.st_uid)
3139 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3140 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3141 #endif /* IAMSUID */
3143 if (PL_euid) { /* oops, we're not the setuid root perl */
3144 (void)PerlIO_close(PL_rsfp);
3147 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3148 (int)PERL_REVISION, (int)PERL_VERSION,
3149 (int)PERL_SUBVERSION), PL_origargv);
3151 Perl_croak(aTHX_ "Can't do setuid\n");
3154 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3156 (void)setegid(PL_statbuf.st_gid);
3159 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3161 #ifdef HAS_SETRESGID
3162 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3164 PerlProc_setgid(PL_statbuf.st_gid);
3168 if (PerlProc_getegid() != PL_statbuf.st_gid)
3169 Perl_croak(aTHX_ "Can't do setegid!\n");
3171 if (PL_statbuf.st_mode & S_ISUID) {
3172 if (PL_statbuf.st_uid != PL_euid)
3174 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3177 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3179 #ifdef HAS_SETRESUID
3180 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3182 PerlProc_setuid(PL_statbuf.st_uid);
3186 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3187 Perl_croak(aTHX_ "Can't do seteuid!\n");
3189 else if (PL_uid) { /* oops, mustn't run as root */
3191 (void)seteuid((Uid_t)PL_uid);
3194 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3196 #ifdef HAS_SETRESUID
3197 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3199 PerlProc_setuid((Uid_t)PL_uid);
3203 if (PerlProc_geteuid() != PL_uid)
3204 Perl_croak(aTHX_ "Can't do seteuid!\n");
3207 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3208 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3211 else if (PL_preprocess)
3212 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3213 else if (fdscript >= 0)
3214 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3216 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3218 /* We absolutely must clear out any saved ids here, so we */
3219 /* exec the real perl, substituting fd script for scriptname. */
3220 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3221 PerlIO_rewind(PL_rsfp);
3222 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3223 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3224 if (!PL_origargv[which])
3225 Perl_croak(aTHX_ "Permission denied");
3226 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3227 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3228 #if defined(HAS_FCNTL) && defined(F_SETFD)
3229 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3231 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3232 (int)PERL_REVISION, (int)PERL_VERSION,
3233 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3234 Perl_croak(aTHX_ "Can't do setuid\n");
3235 #endif /* IAMSUID */
3237 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3238 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3239 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3240 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3242 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3245 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3246 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3247 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3248 /* not set-id, must be wrapped */
3254 S_find_beginning(pTHX)
3256 register char *s, *s2;
3258 /* skip forward in input to the real script? */
3261 #ifdef MACOS_TRADITIONAL
3262 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3264 while (PL_doextract || gMacPerl_AlwaysExtract) {
3265 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3266 if (!gMacPerl_AlwaysExtract)
3267 Perl_croak(aTHX_ "No Perl script found in input\n");
3269 if (PL_doextract) /* require explicit override ? */
3270 if (!OverrideExtract(PL_origfilename))
3271 Perl_croak(aTHX_ "User aborted script\n");
3273 PL_doextract = FALSE;
3275 /* Pater peccavi, file does not have #! */
3276 PerlIO_rewind(PL_rsfp);
3281 while (PL_doextract) {
3282 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3283 Perl_croak(aTHX_ "No Perl script found in input\n");
3286 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3287 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3288 PL_doextract = FALSE;
3289 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3291 while (*s == ' ' || *s == '\t') s++;
3293 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3294 if (strnEQ(s2-4,"perl",4))
3296 while ((s = moreswitches(s)))
3299 #ifdef MACOS_TRADITIONAL
3310 PL_uid = PerlProc_getuid();
3311 PL_euid = PerlProc_geteuid();
3312 PL_gid = PerlProc_getgid();
3313 PL_egid = PerlProc_getegid();
3315 PL_uid |= PL_gid << 16;
3316 PL_euid |= PL_egid << 16;
3318 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3322 S_forbid_setid(pTHX_ char *s)
3324 if (PL_euid != PL_uid)
3325 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3326 if (PL_egid != PL_gid)
3327 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3331 Perl_init_debugger(pTHX)
3333 HV *ostash = PL_curstash;
3335 PL_curstash = PL_debstash;
3336 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3337 AvREAL_off(PL_dbargs);
3338 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3339 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3340 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3341 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3342 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3343 sv_setiv(PL_DBsingle, 0);
3344 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3345 sv_setiv(PL_DBtrace, 0);
3346 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3347 sv_setiv(PL_DBsignal, 0);
3348 PL_curstash = ostash;
3351 #ifndef STRESS_REALLOC
3352 #define REASONABLE(size) (size)
3354 #define REASONABLE(size) (1) /* unreasonable */
3358 Perl_init_stacks(pTHX)
3360 /* start with 128-item stack and 8K cxstack */
3361 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3362 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3363 PL_curstackinfo->si_type = PERLSI_MAIN;
3364 PL_curstack = PL_curstackinfo->si_stack;
3365 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3367 PL_stack_base = AvARRAY(PL_curstack);
3368 PL_stack_sp = PL_stack_base;
3369 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3371 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3374 PL_tmps_max = REASONABLE(128);
3376 New(54,PL_markstack,REASONABLE(32),I32);
3377 PL_markstack_ptr = PL_markstack;
3378 PL_markstack_max = PL_markstack + REASONABLE(32);
3382 New(54,PL_scopestack,REASONABLE(32),I32);
3383 PL_scopestack_ix = 0;
3384 PL_scopestack_max = REASONABLE(32);
3386 New(54,PL_savestack,REASONABLE(128),ANY);
3387 PL_savestack_ix = 0;
3388 PL_savestack_max = REASONABLE(128);
3390 New(54,PL_retstack,REASONABLE(16),OP*);
3392 PL_retstack_max = REASONABLE(16);
3400 while (PL_curstackinfo->si_next)
3401 PL_curstackinfo = PL_curstackinfo->si_next;
3402 while (PL_curstackinfo) {
3403 PERL_SI *p = PL_curstackinfo->si_prev;
3404 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3405 Safefree(PL_curstackinfo->si_cxstack);
3406 Safefree(PL_curstackinfo);
3407 PL_curstackinfo = p;
3409 Safefree(PL_tmps_stack);
3410 Safefree(PL_markstack);
3411 Safefree(PL_scopestack);
3412 Safefree(PL_savestack);
3413 Safefree(PL_retstack);
3422 lex_start(PL_linestr);
3424 PL_subname = newSVpvn("main",4);
3428 S_init_predump_symbols(pTHX)
3433 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3434 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3435 GvMULTI_on(PL_stdingv);
3436 io = GvIOp(PL_stdingv);
3437 IoTYPE(io) = IoTYPE_RDONLY;
3438 IoIFP(io) = PerlIO_stdin();
3439 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3441 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3443 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3446 IoTYPE(io) = IoTYPE_WRONLY;
3447 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3449 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3451 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3453 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3454 GvMULTI_on(PL_stderrgv);
3455 io = GvIOp(PL_stderrgv);
3456 IoTYPE(io) = IoTYPE_WRONLY;
3457 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3458 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3460 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3462 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3465 Safefree(PL_osname);
3466 PL_osname = savepv(OSNAME);
3470 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3473 argc--,argv++; /* skip name of script */
3474 if (PL_doswitches) {
3475 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3478 if (argv[0][1] == '-' && !argv[0][2]) {
3482 if ((s = strchr(argv[0], '='))) {
3484 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3487 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3490 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3491 GvMULTI_on(PL_argvgv);
3492 (void)gv_AVadd(PL_argvgv);
3493 av_clear(GvAVn(PL_argvgv));
3494 for (; argc > 0; argc--,argv++) {
3495 SV *sv = newSVpv(argv[0],0);
3496 av_push(GvAVn(PL_argvgv),sv);
3497 if (PL_widesyscalls)
3498 (void)sv_utf8_decode(sv);
3503 #ifdef HAS_PROCSELFEXE
3504 /* This is a function so that we don't hold on to MAXPATHLEN
3505 bytes of stack longer than necessary
3508 S_procself_val(pTHX_ SV *sv, char *arg0)
3510 char buf[MAXPATHLEN];
3511 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3512 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3513 returning the text "unknown" from the readlink rather than the path
3514 to the executable (or returning an error from the readlink). Any valid
3515 path has a '/' in it somewhere, so use that to validate the result.
3516 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3518 if (len > 0 && memchr(buf, '/', len)) {
3519 sv_setpvn(sv,buf,len);
3525 #endif /* HAS_PROCSELFEXE */
3528 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3534 PL_toptarget = NEWSV(0,0);
3535 sv_upgrade(PL_toptarget, SVt_PVFM);
3536 sv_setpvn(PL_toptarget, "", 0);
3537 PL_bodytarget = NEWSV(0,0);
3538 sv_upgrade(PL_bodytarget, SVt_PVFM);
3539 sv_setpvn(PL_bodytarget, "", 0);
3540 PL_formtarget = PL_bodytarget;
3544 init_argv_symbols(argc,argv);
3546 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3547 #ifdef MACOS_TRADITIONAL
3548 /* $0 is not majick on a Mac */
3549 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3551 sv_setpv(GvSV(tmpgv),PL_origfilename);
3552 magicname("0", "0", 1);
3555 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3556 #ifdef HAS_PROCSELFEXE
3557 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3560 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3562 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3566 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3568 GvMULTI_on(PL_envgv);
3569 hv = GvHVn(PL_envgv);
3570 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3571 #ifdef USE_ENVIRON_ARRAY
3572 /* Note that if the supplied env parameter is actually a copy
3573 of the global environ then it may now point to free'd memory
3574 if the environment has been modified since. To avoid this
3575 problem we treat env==NULL as meaning 'use the default'
3580 environ[0] = Nullch;
3582 for (; *env; env++) {
3583 if (!(s = strchr(*env,'=')))
3590 sv = newSVpv(s+1, 0);
3591 (void)hv_store(hv, *env, s - *env, sv, 0);
3595 #endif /* USE_ENVIRON_ARRAY */
3598 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3599 SvREADONLY_off(GvSV(tmpgv));
3600 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3601 SvREADONLY_on(GvSV(tmpgv));
3604 /* touch @F array to prevent spurious warnings 20020415 MJD */
3606 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3608 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3609 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3610 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3614 S_init_perllib(pTHX)
3619 s = PerlEnv_getenv("PERL5LIB");
3621 incpush(s, TRUE, TRUE);
3623 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3625 /* Treat PERL5?LIB as a possible search list logical name -- the
3626 * "natural" VMS idiom for a Unix path string. We allow each
3627 * element to be a set of |-separated directories for compatibility.
3631 if (my_trnlnm("PERL5LIB",buf,0))
3632 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3634 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3638 /* Use the ~-expanded versions of APPLLIB (undocumented),
3639 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3642 incpush(APPLLIB_EXP, TRUE, TRUE);
3646 incpush(ARCHLIB_EXP, FALSE, FALSE);
3648 #ifdef MACOS_TRADITIONAL
3651 SV * privdir = NEWSV(55, 0);
3652 char * macperl = PerlEnv_getenv("MACPERL");
3657 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3658 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3659 incpush(SvPVX(privdir), TRUE, FALSE);
3660 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3661 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3662 incpush(SvPVX(privdir), TRUE, FALSE);
3664 SvREFCNT_dec(privdir);
3667 incpush(":", FALSE, FALSE);
3670 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3673 incpush(PRIVLIB_EXP, TRUE, FALSE);
3675 incpush(PRIVLIB_EXP, FALSE, FALSE);
3679 /* sitearch is always relative to sitelib on Windows for
3680 * DLL-based path intuition to work correctly */
3681 # if !defined(WIN32)
3682 incpush(SITEARCH_EXP, FALSE, FALSE);
3688 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3690 incpush(SITELIB_EXP, FALSE, FALSE);
3694 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3695 incpush(SITELIB_STEM, FALSE, TRUE);
3698 #ifdef PERL_VENDORARCH_EXP
3699 /* vendorarch is always relative to vendorlib on Windows for
3700 * DLL-based path intuition to work correctly */
3701 # if !defined(WIN32)
3702 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3706 #ifdef PERL_VENDORLIB_EXP
3708 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3710 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3714 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3715 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3718 #ifdef PERL_OTHERLIBDIRS
3719 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3723 incpush(".", FALSE, FALSE);
3724 #endif /* MACOS_TRADITIONAL */
3727 #if defined(DOSISH) || defined(EPOC)
3728 # define PERLLIB_SEP ';'
3731 # define PERLLIB_SEP '|'
3733 # if defined(MACOS_TRADITIONAL)
3734 # define PERLLIB_SEP ','
3736 # define PERLLIB_SEP ':'
3740 #ifndef PERLLIB_MANGLE
3741 # define PERLLIB_MANGLE(s,n) (s)
3745 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3747 SV *subdir = Nullsv;
3752 if (addsubdirs || addoldvers) {
3753 subdir = sv_newmortal();
3756 /* Break at all separators */
3758 SV *libdir = NEWSV(55,0);
3761 /* skip any consecutive separators */
3762 while ( *p == PERLLIB_SEP ) {
3763 /* Uncomment the next line for PATH semantics */
3764 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3768 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3769 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3774 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3775 p = Nullch; /* break out */
3777 #ifdef MACOS_TRADITIONAL
3778 if (!strchr(SvPVX(libdir), ':'))
3779 sv_insert(libdir, 0, 0, ":", 1);
3780 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3781 sv_catpv(libdir, ":");
3785 * BEFORE pushing libdir onto @INC we may first push version- and
3786 * archname-specific sub-directories.
3788 if (addsubdirs || addoldvers) {
3789 #ifdef PERL_INC_VERSION_LIST
3790 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3791 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3792 const char **incver;
3799 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3801 while (unix[len-1] == '/') len--; /* Cosmetic */
3802 sv_usepvn(libdir,unix,len);
3805 PerlIO_printf(Perl_error_log,
3806 "Failed to unixify @INC element \"%s\"\n",
3810 #ifdef MACOS_TRADITIONAL
3811 #define PERL_AV_SUFFIX_FMT ""
3812 #define PERL_ARCH_FMT "%s:"
3813 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3815 #define PERL_AV_SUFFIX_FMT "/"
3816 #define PERL_ARCH_FMT "/%s"
3817 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3819 /* .../version/archname if -d .../version/archname */
3820 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3822 (int)PERL_REVISION, (int)PERL_VERSION,
3823 (int)PERL_SUBVERSION, ARCHNAME);
3824 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3825 S_ISDIR(tmpstatbuf.st_mode))
3826 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3828 /* .../version if -d .../version */
3829 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3830 (int)PERL_REVISION, (int)PERL_VERSION,
3831 (int)PERL_SUBVERSION);
3832 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3833 S_ISDIR(tmpstatbuf.st_mode))
3834 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3836 /* .../archname if -d .../archname */
3837 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3838 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3839 S_ISDIR(tmpstatbuf.st_mode))
3840 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3843 #ifdef PERL_INC_VERSION_LIST
3845 for (incver = incverlist; *incver; incver++) {
3846 /* .../xxx if -d .../xxx */
3847 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3848 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3849 S_ISDIR(tmpstatbuf.st_mode))
3850 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3856 /* finally push this lib directory on the end of @INC */
3857 av_push(GvAVn(PL_incgv), libdir);
3861 #ifdef USE_5005THREADS
3862 STATIC struct perl_thread *
3863 S_init_main_thread(pTHX)
3865 #if !defined(PERL_IMPLICIT_CONTEXT)
3866 struct perl_thread *thr;
3870 Newz(53, thr, 1, struct perl_thread);
3871 PL_curcop = &PL_compiling;
3872 thr->interp = PERL_GET_INTERP;
3873 thr->cvcache = newHV();
3874 thr->threadsv = newAV();
3875 /* thr->threadsvp is set when find_threadsv is called */
3876 thr->specific = newAV();
3877 thr->flags = THRf_R_JOINABLE;
3878 MUTEX_INIT(&thr->mutex);
3879 /* Handcraft thrsv similarly to mess_sv */
3880 New(53, PL_thrsv, 1, SV);
3881 Newz(53, xpv, 1, XPV);
3882 SvFLAGS(PL_thrsv) = SVt_PV;
3883 SvANY(PL_thrsv) = (void*)xpv;
3884 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3885 SvPVX(PL_thrsv) = (char*)thr;
3886 SvCUR_set(PL_thrsv, sizeof(thr));
3887 SvLEN_set(PL_thrsv, sizeof(thr));
3888 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3889 thr->oursv = PL_thrsv;
3890 PL_chopset = " \n-";
3893 MUTEX_LOCK(&PL_threads_mutex);
3899 MUTEX_UNLOCK(&PL_threads_mutex);
3901 #ifdef HAVE_THREAD_INTERN
3902 Perl_init_thread_intern(thr);
3905 #ifdef SET_THREAD_SELF
3906 SET_THREAD_SELF(thr);
3908 thr->self = pthread_self();
3909 #endif /* SET_THREAD_SELF */
3913 * These must come after the thread self setting
3914 * because sv_setpvn does SvTAINT and the taint
3915 * fields thread selfness being set.
3917 PL_toptarget = NEWSV(0,0);
3918 sv_upgrade(PL_toptarget, SVt_PVFM);
3919 sv_setpvn(PL_toptarget, "", 0);
3920 PL_bodytarget = NEWSV(0,0);
3921 sv_upgrade(PL_bodytarget, SVt_PVFM);
3922 sv_setpvn(PL_bodytarget, "", 0);
3923 PL_formtarget = PL_bodytarget;
3924 thr->errsv = newSVpvn("", 0);
3925 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3928 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3929 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3930 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3931 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3932 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3933 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3935 PL_reginterp_cnt = 0;
3939 #endif /* USE_5005THREADS */
3942 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3945 line_t oldline = CopLINE(PL_curcop);
3951 while (AvFILL(paramList) >= 0) {
3952 cv = (CV*)av_shift(paramList);
3953 if (PL_savebegin && (paramList == PL_beginav)) {
3954 /* save PL_beginav for compiler */
3955 if (! PL_beginav_save)
3956 PL_beginav_save = newAV();
3957 av_push(PL_beginav_save, (SV*)cv);
3961 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3962 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3968 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3972 (void)SvPV(atsv, len);
3975 PL_curcop = &PL_compiling;
3976 CopLINE_set(PL_curcop, oldline);
3977 if (paramList == PL_beginav)
3978 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3980 Perl_sv_catpvf(aTHX_ atsv,
3981 "%s failed--call queue aborted",
3982 paramList == PL_checkav ? "CHECK"
3983 : paramList == PL_initav ? "INIT"
3985 while (PL_scopestack_ix > oldscope)
3988 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3995 /* my_exit() was called */
3996 while (PL_scopestack_ix > oldscope)
3999 PL_curstash = PL_defstash;
4000 PL_curcop = &PL_compiling;
4001 CopLINE_set(PL_curcop, oldline);
4003 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4004 if (paramList == PL_beginav)
4005 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4007 Perl_croak(aTHX_ "%s failed--call queue aborted",
4008 paramList == PL_checkav ? "CHECK"
4009 : paramList == PL_initav ? "INIT"
4016 PL_curcop = &PL_compiling;
4017 CopLINE_set(PL_curcop, oldline);
4020 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4028 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4030 S_vcall_list_body(pTHX_ va_list args)
4032 CV *cv = va_arg(args, CV*);
4033 return call_list_body(cv);
4038 S_call_list_body(pTHX_ CV *cv)
4040 PUSHMARK(PL_stack_sp);
4041 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4046 Perl_my_exit(pTHX_ U32 status)
4048 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4049 thr, (unsigned long) status));
4058 STATUS_NATIVE_SET(status);
4065 Perl_my_failure_exit(pTHX)
4068 if (vaxc$errno & 1) {
4069 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4070 STATUS_NATIVE_SET(44);
4073 if (!vaxc$errno && errno) /* unlikely */
4074 STATUS_NATIVE_SET(44);
4076 STATUS_NATIVE_SET(vaxc$errno);
4081 STATUS_POSIX_SET(errno);
4083 exitstatus = STATUS_POSIX >> 8;
4084 if (exitstatus & 255)
4085 STATUS_POSIX_SET(exitstatus);
4087 STATUS_POSIX_SET(255);
4094 S_my_exit_jump(pTHX)
4096 register PERL_CONTEXT *cx;
4101 SvREFCNT_dec(PL_e_script);
4102 PL_e_script = Nullsv;
4105 POPSTACK_TO(PL_mainstack);
4106 if (cxstack_ix >= 0) {
4109 POPBLOCK(cx,PL_curpm);
4117 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4120 p = SvPVX(PL_e_script);
4121 nl = strchr(p, '\n');
4122 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4124 filter_del(read_e_script);
4127 sv_catpvn(buf_sv, p, nl-p);
4128 sv_chop(PL_e_script, nl);