3 * Copyright (c) 1987-2002 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
21 char *nw_get_sitelib(const char *pl);
24 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
29 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
30 char *getenv (char *); /* Usually in <stdlib.h> */
33 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
41 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
47 #if defined(USE_5005THREADS)
48 # define INIT_TLS_AND_INTERP \
50 if (!PL_curinterp) { \
51 PERL_SET_INTERP(my_perl); \
57 # if defined(USE_ITHREADS)
58 # define INIT_TLS_AND_INTERP \
60 if (!PL_curinterp) { \
61 PERL_SET_INTERP(my_perl); \
64 PERL_SET_THX(my_perl); \
68 PERL_SET_THX(my_perl); \
72 # define INIT_TLS_AND_INTERP \
74 if (!PL_curinterp) { \
75 PERL_SET_INTERP(my_perl); \
77 PERL_SET_THX(my_perl); \
82 #ifdef PERL_IMPLICIT_SYS
84 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
85 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
86 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
87 struct IPerlDir* ipD, struct IPerlSock* ipS,
88 struct IPerlProc* ipP)
90 PerlInterpreter *my_perl;
91 /* New() needs interpreter, so call malloc() instead */
92 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
94 Zero(my_perl, 1, PerlInterpreter);
110 =head1 Embedding Functions
112 =for apidoc perl_alloc
114 Allocates a new Perl interpreter. See L<perlembed>.
122 PerlInterpreter *my_perl;
123 #ifdef USE_5005THREADS
127 /* New() needs interpreter, so call malloc() instead */
128 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
131 Zero(my_perl, 1, PerlInterpreter);
134 #endif /* PERL_IMPLICIT_SYS */
137 =for apidoc perl_construct
139 Initializes a new Perl interpreter. See L<perlembed>.
145 perl_construct(pTHXx)
147 #ifdef USE_5005THREADS
149 struct perl_thread *thr = NULL;
150 #endif /* FAKE_THREADS */
151 #endif /* USE_5005THREADS */
155 PL_perl_destruct_level = 1;
157 if (PL_perl_destruct_level > 0)
161 /* Init the real globals (and main thread)? */
163 #ifdef USE_5005THREADS
164 MUTEX_INIT(&PL_sv_mutex);
166 * Safe to use basic SV functions from now on (though
167 * not things like mortals or tainting yet).
169 MUTEX_INIT(&PL_eval_mutex);
170 COND_INIT(&PL_eval_cond);
171 MUTEX_INIT(&PL_threads_mutex);
172 COND_INIT(&PL_nthreads_cond);
173 # ifdef EMULATE_ATOMIC_REFCOUNTS
174 MUTEX_INIT(&PL_svref_mutex);
175 # endif /* EMULATE_ATOMIC_REFCOUNTS */
177 MUTEX_INIT(&PL_cred_mutex);
178 MUTEX_INIT(&PL_sv_lock_mutex);
179 MUTEX_INIT(&PL_fdpid_mutex);
181 thr = init_main_thread();
182 #endif /* USE_5005THREADS */
184 #ifdef PERL_FLEXIBLE_EXCEPTIONS
185 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
188 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
190 PL_linestr = NEWSV(65,79);
191 sv_upgrade(PL_linestr,SVt_PVIV);
193 if (!SvREADONLY(&PL_sv_undef)) {
194 /* set read-only and try to insure than we wont see REFCNT==0
197 SvREADONLY_on(&PL_sv_undef);
198 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
200 sv_setpv(&PL_sv_no,PL_No);
202 SvREADONLY_on(&PL_sv_no);
203 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
205 sv_setpv(&PL_sv_yes,PL_Yes);
207 SvREADONLY_on(&PL_sv_yes);
208 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
211 PL_sighandlerp = Perl_sighandler;
212 PL_pidstatus = newHV();
215 PL_rs = newSVpvn("\n", 1);
220 PL_lex_state = LEX_NOTPARSING;
226 SET_NUMERIC_STANDARD();
230 PL_patchlevel = NEWSV(0,4);
231 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
232 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
233 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
234 s = (U8*)SvPVX(PL_patchlevel);
235 /* Build version strings using "native" characters */
236 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
237 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
238 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
240 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
241 SvPOK_on(PL_patchlevel);
242 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
243 + ((NV)PERL_VERSION / (NV)1000)
244 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
245 + ((NV)PERL_SUBVERSION / (NV)1000000)
248 SvNOK_on(PL_patchlevel); /* dual valued */
249 SvUTF8_on(PL_patchlevel);
250 SvREADONLY_on(PL_patchlevel);
253 #if defined(LOCAL_PATCH_COUNT)
254 PL_localpatches = local_patches; /* For possible -v */
257 #ifdef HAVE_INTERP_INTERN
261 PerlIO_init(aTHX); /* Hook to IO system */
263 PL_fdpid = newAV(); /* for remembering popen pids by fd */
264 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
265 PL_errors = newSVpvn("",0);
266 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
267 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
268 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
270 PL_regex_padav = newAV();
271 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
272 PL_regex_pad = AvARRAY(PL_regex_padav);
274 #ifdef USE_REENTRANT_API
275 Perl_reentrant_init(aTHX);
278 /* Note that strtab is a rather special HV. Assumptions are made
279 about not iterating on it, and not adding tie magic to it.
280 It is properly deallocated in perl_destruct() */
283 #ifdef USE_5005THREADS
284 MUTEX_INIT(&PL_strtab_mutex);
286 HvSHAREKEYS_off(PL_strtab); /* mandatory */
287 hv_ksplit(PL_strtab, 512);
289 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
290 _dyld_lookup_and_bind
291 ("__environ", (unsigned long *) &environ_pointer, NULL);
294 #ifdef USE_ENVIRON_ARRAY
295 PL_origenviron = environ;
302 =for apidoc nothreadhook
304 Stub that provides thread hook for perl_destruct when there are
311 Perl_nothreadhook(pTHX)
317 =for apidoc perl_destruct
319 Shuts down a Perl interpreter. See L<perlembed>.
327 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
329 #ifdef USE_5005THREADS
332 #endif /* USE_5005THREADS */
334 /* wait for all pseudo-forked children to finish */
335 PERL_WAIT_FOR_CHILDREN;
337 #ifdef USE_5005THREADS
339 /* Pass 1 on any remaining threads: detach joinables, join zombies */
341 MUTEX_LOCK(&PL_threads_mutex);
342 DEBUG_S(PerlIO_printf(Perl_debug_log,
343 "perl_destruct: waiting for %d threads...\n",
345 for (t = thr->next; t != thr; t = t->next) {
346 MUTEX_LOCK(&t->mutex);
347 switch (ThrSTATE(t)) {
350 DEBUG_S(PerlIO_printf(Perl_debug_log,
351 "perl_destruct: joining zombie %p\n", t));
352 ThrSETSTATE(t, THRf_DEAD);
353 MUTEX_UNLOCK(&t->mutex);
356 * The SvREFCNT_dec below may take a long time (e.g. av
357 * may contain an object scalar whose destructor gets
358 * called) so we have to unlock threads_mutex and start
361 MUTEX_UNLOCK(&PL_threads_mutex);
363 SvREFCNT_dec((SV*)av);
364 DEBUG_S(PerlIO_printf(Perl_debug_log,
365 "perl_destruct: joined zombie %p OK\n", t));
367 case THRf_R_JOINABLE:
368 DEBUG_S(PerlIO_printf(Perl_debug_log,
369 "perl_destruct: detaching thread %p\n", t));
370 ThrSETSTATE(t, THRf_R_DETACHED);
372 * We unlock threads_mutex and t->mutex in the opposite order
373 * from which we locked them just so that DETACH won't
374 * deadlock if it panics. It's only a breach of good style
375 * not a bug since they are unlocks not locks.
377 MUTEX_UNLOCK(&PL_threads_mutex);
379 MUTEX_UNLOCK(&t->mutex);
382 DEBUG_S(PerlIO_printf(Perl_debug_log,
383 "perl_destruct: ignoring %p (state %u)\n",
385 MUTEX_UNLOCK(&t->mutex);
386 /* fall through and out */
389 /* We leave the above "Pass 1" loop with threads_mutex still locked */
391 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
392 while (PL_nthreads > 1)
394 DEBUG_S(PerlIO_printf(Perl_debug_log,
395 "perl_destruct: final wait for %d threads\n",
397 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
399 /* At this point, we're the last thread */
400 MUTEX_UNLOCK(&PL_threads_mutex);
401 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
402 MUTEX_DESTROY(&PL_threads_mutex);
403 COND_DESTROY(&PL_nthreads_cond);
405 #endif /* !defined(FAKE_THREADS) */
406 #endif /* USE_5005THREADS */
408 destruct_level = PL_perl_destruct_level;
412 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
414 if (destruct_level < i)
421 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
426 if (PL_endav && !PL_minus_c)
427 call_list(PL_scopestack_ix, PL_endav);
433 /* Need to flush since END blocks can produce output */
436 if (CALL_FPTR(PL_threadhook)(aTHX)) {
437 /* Threads hook has vetoed further cleanup */
438 return STATUS_NATIVE_EXPORT;
441 /* We must account for everything. */
443 /* Destroy the main CV and syntax tree */
445 /* If running under -d may not have PL_comppad. */
446 PL_curpad = PL_comppad ? AvARRAY(PL_comppad) : NULL;
447 op_free(PL_main_root);
448 PL_main_root = Nullop;
450 PL_curcop = &PL_compiling;
451 PL_main_start = Nullop;
452 SvREFCNT_dec(PL_main_cv);
456 /* Tell PerlIO we are about to tear things apart in case
457 we have layers which are using resources that should
461 PerlIO_destruct(aTHX);
463 if (PL_sv_objcount) {
465 * Try to destruct global references. We do this first so that the
466 * destructors and destructees still exist. Some sv's might remain.
467 * Non-referenced objects are on their own.
472 /* unhook hooks which will soon be, or use, destroyed data */
473 SvREFCNT_dec(PL_warnhook);
474 PL_warnhook = Nullsv;
475 SvREFCNT_dec(PL_diehook);
478 /* call exit list functions */
479 while (PL_exitlistlen-- > 0)
480 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
482 Safefree(PL_exitlist);
484 if (destruct_level == 0){
486 DEBUG_P(debprofdump());
488 #if defined(PERLIO_LAYERS)
489 /* No more IO - including error messages ! */
490 PerlIO_cleanup(aTHX);
493 /* The exit() function will do everything that needs doing. */
494 return STATUS_NATIVE_EXPORT;
497 /* jettison our possibly duplicated environment */
498 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
499 * so we certainly shouldn't free it here
501 #if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
502 if (environ != PL_origenviron
504 /* only main thread can free environ[0] contents */
505 && PL_curinterp == aTHX
511 for (i = 0; environ[i]; i++)
512 safesysfree(environ[i]);
514 /* Must use safesysfree() when working with environ. */
515 safesysfree(environ);
517 environ = PL_origenviron;
522 /* the syntax tree is shared between clones
523 * so op_free(PL_main_root) only ReREFCNT_dec's
524 * REGEXPs in the parent interpreter
525 * we need to manually ReREFCNT_dec for the clones
528 I32 i = AvFILLp(PL_regex_padav) + 1;
529 SV **ary = AvARRAY(PL_regex_padav);
533 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
535 if (SvFLAGS(resv) & SVf_BREAK) {
536 /* this is PL_reg_curpm, already freed
537 * flag is set in regexec.c:S_regtry
539 SvFLAGS(resv) &= ~SVf_BREAK;
541 else if(SvREPADTMP(resv)) {
542 SvREPADTMP_off(resv);
549 SvREFCNT_dec(PL_regex_padav);
550 PL_regex_padav = Nullav;
554 /* loosen bonds of global variables */
557 (void)PerlIO_close(PL_rsfp);
561 /* Filters for program text */
562 SvREFCNT_dec(PL_rsfp_filters);
563 PL_rsfp_filters = Nullav;
566 PL_preprocess = FALSE;
572 PL_doswitches = FALSE;
573 PL_dowarn = G_WARN_OFF;
574 PL_doextract = FALSE;
575 PL_sawampersand = FALSE; /* must save all match strings */
578 Safefree(PL_inplace);
580 SvREFCNT_dec(PL_patchlevel);
583 SvREFCNT_dec(PL_e_script);
584 PL_e_script = Nullsv;
587 while (--PL_origargc >= 0) {
588 Safefree(PL_origargv[PL_origargc]);
590 Safefree(PL_origargv);
592 /* magical thingies */
594 SvREFCNT_dec(PL_ofs_sv); /* $, */
597 SvREFCNT_dec(PL_ors_sv); /* $\ */
600 SvREFCNT_dec(PL_rs); /* $/ */
603 PL_multiline = 0; /* $* */
604 Safefree(PL_osname); /* $^O */
607 SvREFCNT_dec(PL_statname);
608 PL_statname = Nullsv;
611 /* defgv, aka *_ should be taken care of elsewhere */
613 /* clean up after study() */
614 SvREFCNT_dec(PL_lastscream);
615 PL_lastscream = Nullsv;
616 Safefree(PL_screamfirst);
618 Safefree(PL_screamnext);
622 Safefree(PL_efloatbuf);
623 PL_efloatbuf = Nullch;
626 /* startup and shutdown function lists */
627 SvREFCNT_dec(PL_beginav);
628 SvREFCNT_dec(PL_beginav_save);
629 SvREFCNT_dec(PL_endav);
630 SvREFCNT_dec(PL_checkav);
631 SvREFCNT_dec(PL_initav);
633 PL_beginav_save = Nullav;
638 /* shortcuts just get cleared */
644 PL_argvoutgv = Nullgv;
646 PL_stderrgv = Nullgv;
647 PL_last_in_gv = Nullgv;
649 PL_debstash = Nullhv;
651 /* reset so print() ends up where we expect */
654 SvREFCNT_dec(PL_argvout_stack);
655 PL_argvout_stack = Nullav;
657 SvREFCNT_dec(PL_modglobal);
658 PL_modglobal = Nullhv;
659 SvREFCNT_dec(PL_preambleav);
660 PL_preambleav = Nullav;
661 SvREFCNT_dec(PL_subname);
663 SvREFCNT_dec(PL_linestr);
665 SvREFCNT_dec(PL_pidstatus);
666 PL_pidstatus = Nullhv;
667 SvREFCNT_dec(PL_toptarget);
668 PL_toptarget = Nullsv;
669 SvREFCNT_dec(PL_bodytarget);
670 PL_bodytarget = Nullsv;
671 PL_formtarget = Nullsv;
673 /* free locale stuff */
674 #ifdef USE_LOCALE_COLLATE
675 Safefree(PL_collation_name);
676 PL_collation_name = Nullch;
679 #ifdef USE_LOCALE_NUMERIC
680 Safefree(PL_numeric_name);
681 PL_numeric_name = Nullch;
682 SvREFCNT_dec(PL_numeric_radix_sv);
685 /* clear utf8 character classes */
686 SvREFCNT_dec(PL_utf8_alnum);
687 SvREFCNT_dec(PL_utf8_alnumc);
688 SvREFCNT_dec(PL_utf8_ascii);
689 SvREFCNT_dec(PL_utf8_alpha);
690 SvREFCNT_dec(PL_utf8_space);
691 SvREFCNT_dec(PL_utf8_cntrl);
692 SvREFCNT_dec(PL_utf8_graph);
693 SvREFCNT_dec(PL_utf8_digit);
694 SvREFCNT_dec(PL_utf8_upper);
695 SvREFCNT_dec(PL_utf8_lower);
696 SvREFCNT_dec(PL_utf8_print);
697 SvREFCNT_dec(PL_utf8_punct);
698 SvREFCNT_dec(PL_utf8_xdigit);
699 SvREFCNT_dec(PL_utf8_mark);
700 SvREFCNT_dec(PL_utf8_toupper);
701 SvREFCNT_dec(PL_utf8_totitle);
702 SvREFCNT_dec(PL_utf8_tolower);
703 SvREFCNT_dec(PL_utf8_tofold);
704 SvREFCNT_dec(PL_utf8_idstart);
705 SvREFCNT_dec(PL_utf8_idcont);
706 PL_utf8_alnum = Nullsv;
707 PL_utf8_alnumc = Nullsv;
708 PL_utf8_ascii = Nullsv;
709 PL_utf8_alpha = Nullsv;
710 PL_utf8_space = Nullsv;
711 PL_utf8_cntrl = Nullsv;
712 PL_utf8_graph = Nullsv;
713 PL_utf8_digit = Nullsv;
714 PL_utf8_upper = Nullsv;
715 PL_utf8_lower = Nullsv;
716 PL_utf8_print = Nullsv;
717 PL_utf8_punct = Nullsv;
718 PL_utf8_xdigit = Nullsv;
719 PL_utf8_mark = Nullsv;
720 PL_utf8_toupper = Nullsv;
721 PL_utf8_totitle = Nullsv;
722 PL_utf8_tolower = Nullsv;
723 PL_utf8_tofold = Nullsv;
724 PL_utf8_idstart = Nullsv;
725 PL_utf8_idcont = Nullsv;
727 if (!specialWARN(PL_compiling.cop_warnings))
728 SvREFCNT_dec(PL_compiling.cop_warnings);
729 PL_compiling.cop_warnings = Nullsv;
730 if (!specialCopIO(PL_compiling.cop_io))
731 SvREFCNT_dec(PL_compiling.cop_io);
732 PL_compiling.cop_io = Nullsv;
733 CopFILE_free(&PL_compiling);
734 CopSTASH_free(&PL_compiling);
736 /* Prepare to destruct main symbol table. */
741 SvREFCNT_dec(PL_curstname);
742 PL_curstname = Nullsv;
744 /* clear queued errors */
745 SvREFCNT_dec(PL_errors);
749 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
750 if (PL_scopestack_ix != 0)
751 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
752 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
753 (long)PL_scopestack_ix);
754 if (PL_savestack_ix != 0)
755 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
756 "Unbalanced saves: %ld more saves than restores\n",
757 (long)PL_savestack_ix);
758 if (PL_tmps_floor != -1)
759 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
760 (long)PL_tmps_floor + 1);
761 if (cxstack_ix != -1)
762 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
763 (long)cxstack_ix + 1);
766 /* Now absolutely destruct everything, somehow or other, loops or no. */
767 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
768 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
770 /* the 2 is for PL_fdpid and PL_strtab */
771 while (PL_sv_count > 2 && sv_clean_all())
774 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
775 SvFLAGS(PL_fdpid) |= SVt_PVAV;
776 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
777 SvFLAGS(PL_strtab) |= SVt_PVHV;
779 AvREAL_off(PL_fdpid); /* no surviving entries */
780 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
783 #ifdef HAVE_INTERP_INTERN
787 /* Destruct the global string table. */
789 /* Yell and reset the HeVAL() slots that are still holding refcounts,
790 * so that sv_free() won't fail on them.
798 max = HvMAX(PL_strtab);
799 array = HvARRAY(PL_strtab);
802 if (hent && ckWARN_d(WARN_INTERNAL)) {
803 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
804 "Unbalanced string table refcount: (%d) for \"%s\"",
805 HeVAL(hent) - Nullsv, HeKEY(hent));
806 HeVAL(hent) = Nullsv;
816 SvREFCNT_dec(PL_strtab);
819 /* free the pointer table used for cloning */
820 ptr_table_free(PL_ptr_table);
823 /* free special SVs */
825 SvREFCNT(&PL_sv_yes) = 0;
826 sv_clear(&PL_sv_yes);
827 SvANY(&PL_sv_yes) = NULL;
828 SvFLAGS(&PL_sv_yes) = 0;
830 SvREFCNT(&PL_sv_no) = 0;
832 SvANY(&PL_sv_no) = NULL;
833 SvFLAGS(&PL_sv_no) = 0;
837 for (i=0; i<=2; i++) {
838 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
839 sv_clear(PERL_DEBUG_PAD(i));
840 SvANY(PERL_DEBUG_PAD(i)) = NULL;
841 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
845 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
846 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
848 #if defined(PERLIO_LAYERS)
849 /* No more IO - including error messages ! */
850 PerlIO_cleanup(aTHX);
853 /* sv_undef needs to stay immortal until after PerlIO_cleanup
854 as currently layers use it rather than Nullsv as a marker
855 for no arg - and will try and SvREFCNT_dec it.
857 SvREFCNT(&PL_sv_undef) = 0;
858 SvREADONLY_off(&PL_sv_undef);
860 Safefree(PL_origfilename);
861 Safefree(PL_reg_start_tmp);
863 Safefree(PL_reg_curpm);
864 Safefree(PL_reg_poscache);
865 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
866 Safefree(PL_op_mask);
867 Safefree(PL_psig_ptr);
868 Safefree(PL_psig_name);
869 Safefree(PL_bitcount);
870 Safefree(PL_psig_pend);
872 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
874 DEBUG_P(debprofdump());
875 #ifdef USE_5005THREADS
876 MUTEX_DESTROY(&PL_strtab_mutex);
877 MUTEX_DESTROY(&PL_sv_mutex);
878 MUTEX_DESTROY(&PL_eval_mutex);
879 MUTEX_DESTROY(&PL_cred_mutex);
880 MUTEX_DESTROY(&PL_fdpid_mutex);
881 COND_DESTROY(&PL_eval_cond);
882 #ifdef EMULATE_ATOMIC_REFCOUNTS
883 MUTEX_DESTROY(&PL_svref_mutex);
884 #endif /* EMULATE_ATOMIC_REFCOUNTS */
886 /* As the penultimate thing, free the non-arena SV for thrsv */
887 Safefree(SvPVX(PL_thrsv));
888 Safefree(SvANY(PL_thrsv));
891 #endif /* USE_5005THREADS */
893 #ifdef USE_REENTRANT_API
894 Perl_reentrant_free(aTHX);
899 /* As the absolutely last thing, free the non-arena SV for mess() */
902 /* it could have accumulated taint magic */
903 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
906 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
907 moremagic = mg->mg_moremagic;
908 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
910 Safefree(mg->mg_ptr);
914 /* we know that type >= SVt_PV */
915 (void)SvOOK_off(PL_mess_sv);
916 Safefree(SvPVX(PL_mess_sv));
917 Safefree(SvANY(PL_mess_sv));
918 Safefree(PL_mess_sv);
921 return STATUS_NATIVE_EXPORT;
925 =for apidoc perl_free
927 Releases a Perl interpreter. See L<perlembed>.
935 #if defined(WIN32) || defined(NETWARE)
936 # if defined(PERL_IMPLICIT_SYS)
938 void *host = nw_internal_host;
940 void *host = w32_internal_host;
944 nw_delete_internal_host(host);
946 win32_delete_internal_host(host);
957 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
959 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
960 PL_exitlist[PL_exitlistlen].fn = fn;
961 PL_exitlist[PL_exitlistlen].ptr = ptr;
966 =for apidoc perl_parse
968 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
974 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
979 #ifdef USE_5005THREADS
983 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
986 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
987 setuid perl scripts securely.\n");
993 /* we copy rather than point to argv
994 * since perl_clone will copy and perl_destruct
995 * has no way of knowing if we've made a copy or
999 New(0, PL_origargv, i+1, char*);
1000 PL_origargv[i] = '\0';
1002 PL_origargv[i] = savepv(argv[i]);
1010 /* Come here if running an undumped a.out. */
1012 PL_origfilename = savepv(argv[0]);
1013 PL_do_undump = FALSE;
1014 cxstack_ix = -1; /* start label stack again */
1016 init_postdump_symbols(argc,argv,env);
1021 PL_curpad = AvARRAY(PL_comppad);
1022 op_free(PL_main_root);
1023 PL_main_root = Nullop;
1025 PL_main_start = Nullop;
1026 SvREFCNT_dec(PL_main_cv);
1027 PL_main_cv = Nullcv;
1030 oldscope = PL_scopestack_ix;
1031 PL_dowarn = G_WARN_OFF;
1033 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1034 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
1040 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1041 parse_body(env,xsinit);
1044 call_list(oldscope, PL_checkav);
1051 /* my_exit() was called */
1052 while (PL_scopestack_ix > oldscope)
1055 PL_curstash = PL_defstash;
1057 call_list(oldscope, PL_checkav);
1058 ret = STATUS_NATIVE_EXPORT;
1061 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1069 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1071 S_vparse_body(pTHX_ va_list args)
1073 char **env = va_arg(args, char**);
1074 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1076 return parse_body(env, xsinit);
1081 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1083 int argc = PL_origargc;
1084 char **argv = PL_origargv;
1085 char *scriptname = NULL;
1087 VOL bool dosearch = FALSE;
1088 char *validarg = "";
1092 char *cddir = Nullch;
1094 sv_setpvn(PL_linestr,"",0);
1095 sv = newSVpvn("",0); /* first used for -I flags */
1099 for (argc--,argv++; argc > 0; argc--,argv++) {
1100 if (argv[0][0] != '-' || !argv[0][1])
1104 validarg = " PHOOEY ";
1113 win32_argv2utf8(argc-1, argv+1);
1116 #ifndef PERL_STRICT_CR
1140 if ((s = moreswitches(s)))
1145 if( !PL_tainting ) {
1146 PL_taint_warn = TRUE;
1153 PL_taint_warn = FALSE;
1158 #ifdef MACOS_TRADITIONAL
1159 /* ignore -e for Dev:Pseudo argument */
1160 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1163 if (PL_euid != PL_uid || PL_egid != PL_gid)
1164 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1166 PL_e_script = newSVpvn("",0);
1167 filter_add(read_e_script, NULL);
1170 sv_catpv(PL_e_script, s);
1172 sv_catpv(PL_e_script, argv[1]);
1176 Perl_croak(aTHX_ "No code specified for -e");
1177 sv_catpv(PL_e_script, "\n");
1180 case 'I': /* -I handled both here and in moreswitches() */
1182 if (!*++s && (s=argv[1]) != Nullch) {
1187 STRLEN len = strlen(s);
1188 p = savepvn(s, len);
1189 incpush(p, TRUE, TRUE);
1190 sv_catpvn(sv, "-I", 2);
1191 sv_catpvn(sv, p, len);
1192 sv_catpvn(sv, " ", 1);
1196 Perl_croak(aTHX_ "No directory specified for -I");
1200 PL_preprocess = TRUE;
1210 PL_preambleav = newAV();
1211 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1213 PL_Sv = newSVpv("print myconfig();",0);
1215 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1217 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1219 sv_catpv(PL_Sv,"\" Compile-time options:");
1221 sv_catpv(PL_Sv," DEBUGGING");
1223 # ifdef MULTIPLICITY
1224 sv_catpv(PL_Sv," MULTIPLICITY");
1226 # ifdef USE_5005THREADS
1227 sv_catpv(PL_Sv," USE_5005THREADS");
1229 # ifdef USE_ITHREADS
1230 sv_catpv(PL_Sv," USE_ITHREADS");
1232 # ifdef USE_64_BIT_INT
1233 sv_catpv(PL_Sv," USE_64_BIT_INT");
1235 # ifdef USE_64_BIT_ALL
1236 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1238 # ifdef USE_LONG_DOUBLE
1239 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1241 # ifdef USE_LARGE_FILES
1242 sv_catpv(PL_Sv," USE_LARGE_FILES");
1245 sv_catpv(PL_Sv," USE_SOCKS");
1247 # ifdef PERL_IMPLICIT_CONTEXT
1248 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1250 # ifdef PERL_IMPLICIT_SYS
1251 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1253 sv_catpv(PL_Sv,"\\n\",");
1255 #if defined(LOCAL_PATCH_COUNT)
1256 if (LOCAL_PATCH_COUNT > 0) {
1258 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1259 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1260 if (PL_localpatches[i])
1261 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1265 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1268 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1270 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1273 sv_catpv(PL_Sv, "; \
1275 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1278 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1281 print \" \\%ENV:\\n @env\\n\" if @env; \
1282 print \" \\@INC:\\n @INC\\n\";");
1285 PL_Sv = newSVpv("config_vars(qw(",0);
1286 sv_catpv(PL_Sv, ++s);
1287 sv_catpv(PL_Sv, "))");
1290 av_push(PL_preambleav, PL_Sv);
1291 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1294 PL_doextract = TRUE;
1302 if (!*++s || isSPACE(*s)) {
1306 /* catch use of gnu style long options */
1307 if (strEQ(s, "version")) {
1311 if (strEQ(s, "help")) {
1318 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1324 #ifndef SECURE_INTERNAL_GETENV
1327 (s = PerlEnv_getenv("PERL5OPT")))
1332 if (*s == '-' && *(s+1) == 'T') {
1334 PL_taint_warn = FALSE;
1337 char *popt_copy = Nullch;
1350 if (!strchr("DIMUdmtw", *s))
1351 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1355 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1356 s = popt_copy + (s - popt);
1357 d = popt_copy + (d - popt);
1364 if( !PL_tainting ) {
1365 PL_taint_warn = TRUE;
1375 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1376 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1380 scriptname = argv[0];
1383 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1385 else if (scriptname == Nullch) {
1387 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1395 open_script(scriptname,dosearch,sv,&fdscript);
1397 validate_suid(validarg, scriptname,fdscript);
1400 #if defined(SIGCHLD) || defined(SIGCLD)
1403 # define SIGCHLD SIGCLD
1405 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1406 if (sigstate == SIG_IGN) {
1407 if (ckWARN(WARN_SIGNAL))
1408 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1409 "Can't ignore signal CHLD, forcing to default");
1410 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1416 #ifdef MACOS_TRADITIONAL
1417 if (PL_doextract || gMacPerl_AlwaysExtract) {
1422 if (cddir && PerlDir_chdir(cddir) < 0)
1423 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1427 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1428 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1429 CvUNIQUE_on(PL_compcv);
1431 PL_comppad = newAV();
1432 av_push(PL_comppad, Nullsv);
1433 PL_curpad = AvARRAY(PL_comppad);
1434 PL_comppad_name = newAV();
1435 PL_comppad_name_fill = 0;
1436 PL_min_intro_pending = 0;
1438 #ifdef USE_5005THREADS
1439 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1440 PL_curpad[0] = (SV*)newAV();
1441 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1442 CvOWNER(PL_compcv) = 0;
1443 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1444 MUTEX_INIT(CvMUTEXP(PL_compcv));
1445 #endif /* USE_5005THREADS */
1447 comppadlist = newAV();
1448 AvREAL_off(comppadlist);
1449 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1450 av_store(comppadlist, 1, (SV*)PL_comppad);
1451 CvPADLIST(PL_compcv) = comppadlist;
1454 boot_core_UNIVERSAL();
1456 boot_core_xsutils();
1460 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1462 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1468 # ifdef HAS_SOCKS5_INIT
1469 socks5_init(argv[0]);
1475 init_predump_symbols();
1476 /* init_postdump_symbols not currently designed to be called */
1477 /* more than once (ENV isn't cleared first, for example) */
1478 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1480 init_postdump_symbols(argc,argv,env);
1482 /* PL_wantutf8 is conditionally turned on by
1483 * locale.c:Perl_init_i18nl10n() if the environment
1484 * look like the user wants to use UTF-8. */
1485 if (PL_wantutf8) { /* Requires init_predump_symbols(). */
1489 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
1490 * _and_ the default open discipline. */
1491 if (PL_stdingv && (io = GvIO(PL_stdingv)) && (fp = IoIFP(io)))
1492 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1493 if (PL_defoutgv && (io = GvIO(PL_defoutgv)) && (fp = IoOFP(io)))
1494 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1495 if (PL_stderrgv && (io = GvIO(PL_stderrgv)) && (fp = IoOFP(io)))
1496 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1497 if ((sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1498 sv_setpvn(sv, ":utf8\0:utf8", 11);
1505 /* now parse the script */
1507 SETERRNO(0,SS$_NORMAL);
1509 #ifdef MACOS_TRADITIONAL
1510 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1512 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1514 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1515 MacPerl_MPWFileName(PL_origfilename));
1519 if (yyparse() || PL_error_count) {
1521 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1523 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1528 CopLINE_set(PL_curcop, 0);
1529 PL_curstash = PL_defstash;
1530 PL_preprocess = FALSE;
1532 SvREFCNT_dec(PL_e_script);
1533 PL_e_script = Nullsv;
1537 Not sure that this is still the right place to do this now that we
1538 no longer use PL_nrs. HVDS 2001/09/09
1540 sv_setsv(get_sv("/", TRUE), PL_rs);
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[] = "psltocPmfrxuLHXDSTRJvC";
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 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2759 /* We must init $/ before switches are processed. */
2760 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2764 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2768 char *cpp_discard_flag;
2774 PL_origfilename = savepv("-e");
2777 /* if find_script() returns, it returns a malloc()-ed value */
2778 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2780 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2781 char *s = scriptname + 8;
2782 *fdscript = atoi(s);
2786 scriptname = savepv(s + 1);
2787 Safefree(PL_origfilename);
2788 PL_origfilename = scriptname;
2793 CopFILE_free(PL_curcop);
2794 CopFILE_set(PL_curcop, PL_origfilename);
2795 if (strEQ(PL_origfilename,"-"))
2797 if (*fdscript >= 0) {
2798 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2799 # if defined(HAS_FCNTL) && defined(F_SETFD)
2801 /* ensure close-on-exec */
2802 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2805 else if (PL_preprocess) {
2806 char *cpp_cfg = CPPSTDIN;
2807 SV *cpp = newSVpvn("",0);
2808 SV *cmd = NEWSV(0,0);
2810 if (strEQ(cpp_cfg, "cppstdin"))
2811 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2812 sv_catpv(cpp, cpp_cfg);
2815 sv_catpvn(sv, "-I", 2);
2816 sv_catpv(sv,PRIVLIB_EXP);
2819 DEBUG_P(PerlIO_printf(Perl_debug_log,
2820 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2821 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2823 # if defined(MSDOS) || defined(WIN32) || defined(VMS)
2830 cpp_discard_flag = "";
2832 cpp_discard_flag = "-C";
2836 perl = os2_execname(aTHX);
2838 perl = PL_origargv[0];
2842 /* This strips off Perl comments which might interfere with
2843 the C pre-processor, including #!. #line directives are
2844 deliberately stripped to avoid confusion with Perl's version
2845 of #line. FWP played some golf with it so it will fit
2846 into VMS's 255 character buffer.
2849 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2851 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2853 Perl_sv_setpvf(aTHX_ cmd, "\
2854 %s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
2855 perl, quote, code, quote, scriptname, cpp,
2856 cpp_discard_flag, sv, CPPMINUS);
2858 PL_doextract = FALSE;
2859 # ifdef IAMSUID /* actually, this is caught earlier */
2860 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2862 (void)seteuid(PL_uid); /* musn't stay setuid root */
2864 # ifdef HAS_SETREUID
2865 (void)setreuid((Uid_t)-1, PL_uid);
2867 # ifdef HAS_SETRESUID
2868 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2870 PerlProc_setuid(PL_uid);
2874 if (PerlProc_geteuid() != PL_uid)
2875 Perl_croak(aTHX_ "Can't do seteuid!\n");
2877 # endif /* IAMSUID */
2879 DEBUG_P(PerlIO_printf(Perl_debug_log,
2880 "PL_preprocess: cmd=\"%s\"\n",
2883 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2887 else if (!*scriptname) {
2888 forbid_setid("program input from stdin");
2889 PL_rsfp = PerlIO_stdin();
2892 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2893 # if defined(HAS_FCNTL) && defined(F_SETFD)
2895 /* ensure close-on-exec */
2896 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2901 # ifndef IAMSUID /* in case script is not readable before setuid */
2903 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2904 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2907 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2908 BIN_EXP, (int)PERL_REVISION,
2910 (int)PERL_SUBVERSION), PL_origargv);
2911 Perl_croak(aTHX_ "Can't do setuid\n");
2917 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2920 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2921 CopFILE(PL_curcop), Strerror(errno));
2927 * I_SYSSTATVFS HAS_FSTATVFS
2929 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2930 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2931 * here so that metaconfig picks them up. */
2935 S_fd_on_nosuid_fs(pTHX_ int fd)
2937 int check_okay = 0; /* able to do all the required sys/libcalls */
2938 int on_nosuid = 0; /* the fd is on a nosuid fs */
2940 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2941 * fstatvfs() is UNIX98.
2942 * fstatfs() is 4.3 BSD.
2943 * ustat()+getmnt() is pre-4.3 BSD.
2944 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2945 * an irrelevant filesystem while trying to reach the right one.
2948 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2950 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2951 defined(HAS_FSTATVFS)
2952 # define FD_ON_NOSUID_CHECK_OKAY
2953 struct statvfs stfs;
2955 check_okay = fstatvfs(fd, &stfs) == 0;
2956 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2957 # endif /* fstatvfs */
2959 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2960 defined(PERL_MOUNT_NOSUID) && \
2961 defined(HAS_FSTATFS) && \
2962 defined(HAS_STRUCT_STATFS) && \
2963 defined(HAS_STRUCT_STATFS_F_FLAGS)
2964 # define FD_ON_NOSUID_CHECK_OKAY
2967 check_okay = fstatfs(fd, &stfs) == 0;
2968 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2969 # endif /* fstatfs */
2971 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2972 defined(PERL_MOUNT_NOSUID) && \
2973 defined(HAS_FSTAT) && \
2974 defined(HAS_USTAT) && \
2975 defined(HAS_GETMNT) && \
2976 defined(HAS_STRUCT_FS_DATA) && \
2978 # define FD_ON_NOSUID_CHECK_OKAY
2981 if (fstat(fd, &fdst) == 0) {
2983 if (ustat(fdst.st_dev, &us) == 0) {
2985 /* NOSTAT_ONE here because we're not examining fields which
2986 * vary between that case and STAT_ONE. */
2987 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2988 size_t cmplen = sizeof(us.f_fname);
2989 if (sizeof(fsd.fd_req.path) < cmplen)
2990 cmplen = sizeof(fsd.fd_req.path);
2991 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2992 fdst.st_dev == fsd.fd_req.dev) {
2994 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
3000 # endif /* fstat+ustat+getmnt */
3002 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
3003 defined(HAS_GETMNTENT) && \
3004 defined(HAS_HASMNTOPT) && \
3005 defined(MNTOPT_NOSUID)
3006 # define FD_ON_NOSUID_CHECK_OKAY
3007 FILE *mtab = fopen("/etc/mtab", "r");
3008 struct mntent *entry;
3011 if (mtab && (fstat(fd, &stb) == 0)) {
3012 while (entry = getmntent(mtab)) {
3013 if (stat(entry->mnt_dir, &fsb) == 0
3014 && fsb.st_dev == stb.st_dev)
3016 /* found the filesystem */
3018 if (hasmntopt(entry, MNTOPT_NOSUID))
3021 } /* A single fs may well fail its stat(). */
3026 # endif /* getmntent+hasmntopt */
3029 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
3032 #endif /* IAMSUID */
3035 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
3041 /* do we need to emulate setuid on scripts? */
3043 /* This code is for those BSD systems that have setuid #! scripts disabled
3044 * in the kernel because of a security problem. Merely defining DOSUID
3045 * in perl will not fix that problem, but if you have disabled setuid
3046 * scripts in the kernel, this will attempt to emulate setuid and setgid
3047 * on scripts that have those now-otherwise-useless bits set. The setuid
3048 * root version must be called suidperl or sperlN.NNN. If regular perl
3049 * discovers that it has opened a setuid script, it calls suidperl with
3050 * the same argv that it had. If suidperl finds that the script it has
3051 * just opened is NOT setuid root, it sets the effective uid back to the
3052 * uid. We don't just make perl setuid root because that loses the
3053 * effective uid we had before invoking perl, if it was different from the
3056 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
3057 * be defined in suidperl only. suidperl must be setuid root. The
3058 * Configure script will set this up for you if you want it.
3064 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
3065 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
3066 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
3071 #ifndef HAS_SETREUID
3072 /* On this access check to make sure the directories are readable,
3073 * there is actually a small window that the user could use to make
3074 * filename point to an accessible directory. So there is a faint
3075 * chance that someone could execute a setuid script down in a
3076 * non-accessible directory. I don't know what to do about that.
3077 * But I don't think it's too important. The manual lies when
3078 * it says access() is useful in setuid programs.
3080 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
3081 Perl_croak(aTHX_ "Permission denied");
3083 /* If we can swap euid and uid, then we can determine access rights
3084 * with a simple stat of the file, and then compare device and
3085 * inode to make sure we did stat() on the same file we opened.
3086 * Then we just have to make sure he or she can execute it.
3093 setreuid(PL_euid,PL_uid) < 0
3096 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
3099 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
3100 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
3101 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
3102 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
3103 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
3104 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
3105 Perl_croak(aTHX_ "Permission denied");
3107 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3108 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3109 (void)PerlIO_close(PL_rsfp);
3110 Perl_croak(aTHX_ "Permission denied\n");
3114 setreuid(PL_uid,PL_euid) < 0
3116 # if defined(HAS_SETRESUID)
3117 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3120 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3121 Perl_croak(aTHX_ "Can't reswap uid and euid");
3122 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3123 Perl_croak(aTHX_ "Permission denied\n");
3125 #endif /* HAS_SETREUID */
3126 #endif /* IAMSUID */
3128 if (!S_ISREG(PL_statbuf.st_mode))
3129 Perl_croak(aTHX_ "Permission denied");
3130 if (PL_statbuf.st_mode & S_IWOTH)
3131 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3132 PL_doswitches = FALSE; /* -s is insecure in suid */
3133 CopLINE_inc(PL_curcop);
3134 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3135 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3136 Perl_croak(aTHX_ "No #! line");
3137 s = SvPV(PL_linestr,n_a)+2;
3139 while (!isSPACE(*s)) s++;
3140 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3141 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3142 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3143 Perl_croak(aTHX_ "Not a perl script");
3144 while (*s == ' ' || *s == '\t') s++;
3146 * #! arg must be what we saw above. They can invoke it by
3147 * mentioning suidperl explicitly, but they may not add any strange
3148 * arguments beyond what #! says if they do invoke suidperl that way.
3150 len = strlen(validarg);
3151 if (strEQ(validarg," PHOOEY ") ||
3152 strnNE(s,validarg,len) || !isSPACE(s[len]))
3153 Perl_croak(aTHX_ "Args must match #! line");
3156 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3157 PL_euid == PL_statbuf.st_uid)
3159 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3160 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3161 #endif /* IAMSUID */
3163 if (PL_euid) { /* oops, we're not the setuid root perl */
3164 (void)PerlIO_close(PL_rsfp);
3167 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3168 (int)PERL_REVISION, (int)PERL_VERSION,
3169 (int)PERL_SUBVERSION), PL_origargv);
3171 Perl_croak(aTHX_ "Can't do setuid\n");
3174 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3176 (void)setegid(PL_statbuf.st_gid);
3179 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3181 #ifdef HAS_SETRESGID
3182 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3184 PerlProc_setgid(PL_statbuf.st_gid);
3188 if (PerlProc_getegid() != PL_statbuf.st_gid)
3189 Perl_croak(aTHX_ "Can't do setegid!\n");
3191 if (PL_statbuf.st_mode & S_ISUID) {
3192 if (PL_statbuf.st_uid != PL_euid)
3194 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3197 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3199 #ifdef HAS_SETRESUID
3200 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3202 PerlProc_setuid(PL_statbuf.st_uid);
3206 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3207 Perl_croak(aTHX_ "Can't do seteuid!\n");
3209 else if (PL_uid) { /* oops, mustn't run as root */
3211 (void)seteuid((Uid_t)PL_uid);
3214 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3216 #ifdef HAS_SETRESUID
3217 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3219 PerlProc_setuid((Uid_t)PL_uid);
3223 if (PerlProc_geteuid() != PL_uid)
3224 Perl_croak(aTHX_ "Can't do seteuid!\n");
3227 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3228 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3231 else if (PL_preprocess)
3232 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3233 else if (fdscript >= 0)
3234 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3236 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3238 /* We absolutely must clear out any saved ids here, so we */
3239 /* exec the real perl, substituting fd script for scriptname. */
3240 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3241 PerlIO_rewind(PL_rsfp);
3242 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3243 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3244 if (!PL_origargv[which])
3245 Perl_croak(aTHX_ "Permission denied");
3246 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3247 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3248 #if defined(HAS_FCNTL) && defined(F_SETFD)
3249 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3251 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3252 (int)PERL_REVISION, (int)PERL_VERSION,
3253 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3254 Perl_croak(aTHX_ "Can't do setuid\n");
3255 #endif /* IAMSUID */
3257 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3258 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3259 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3260 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3262 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3265 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3266 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3267 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3268 /* not set-id, must be wrapped */
3274 S_find_beginning(pTHX)
3276 register char *s, *s2;
3277 #ifdef MACOS_TRADITIONAL
3281 /* skip forward in input to the real script? */
3284 #ifdef MACOS_TRADITIONAL
3285 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3287 while (PL_doextract || gMacPerl_AlwaysExtract) {
3288 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3289 if (!gMacPerl_AlwaysExtract)
3290 Perl_croak(aTHX_ "No Perl script found in input\n");
3292 if (PL_doextract) /* require explicit override ? */
3293 if (!OverrideExtract(PL_origfilename))
3294 Perl_croak(aTHX_ "User aborted script\n");
3296 PL_doextract = FALSE;
3298 /* Pater peccavi, file does not have #! */
3299 PerlIO_rewind(PL_rsfp);
3304 while (PL_doextract) {
3305 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3306 Perl_croak(aTHX_ "No Perl script found in input\n");
3309 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3310 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3311 PL_doextract = FALSE;
3312 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3314 while (*s == ' ' || *s == '\t') s++;
3316 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3317 if (strnEQ(s2-4,"perl",4))
3319 while ((s = moreswitches(s)))
3322 #ifdef MACOS_TRADITIONAL
3323 /* We are always searching for the #!perl line in MacPerl,
3324 * so if we find it, still keep the line count correct
3325 * by counting lines we already skipped over
3327 for (; maclines > 0 ; maclines--)
3328 PerlIO_ungetc(PL_rsfp, '\n');
3332 /* gMacPerl_AlwaysExtract is false in MPW tool */
3333 } else if (gMacPerl_AlwaysExtract) {
3344 PL_uid = PerlProc_getuid();
3345 PL_euid = PerlProc_geteuid();
3346 PL_gid = PerlProc_getgid();
3347 PL_egid = PerlProc_getegid();
3349 PL_uid |= PL_gid << 16;
3350 PL_euid |= PL_egid << 16;
3352 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3356 S_forbid_setid(pTHX_ char *s)
3358 if (PL_euid != PL_uid)
3359 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3360 if (PL_egid != PL_gid)
3361 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3365 Perl_init_debugger(pTHX)
3367 HV *ostash = PL_curstash;
3369 PL_curstash = PL_debstash;
3370 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3371 AvREAL_off(PL_dbargs);
3372 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3373 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3374 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3375 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3376 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3377 sv_setiv(PL_DBsingle, 0);
3378 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3379 sv_setiv(PL_DBtrace, 0);
3380 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3381 sv_setiv(PL_DBsignal, 0);
3382 PL_curstash = ostash;
3385 #ifndef STRESS_REALLOC
3386 #define REASONABLE(size) (size)
3388 #define REASONABLE(size) (1) /* unreasonable */
3392 Perl_init_stacks(pTHX)
3394 /* start with 128-item stack and 8K cxstack */
3395 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3396 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3397 PL_curstackinfo->si_type = PERLSI_MAIN;
3398 PL_curstack = PL_curstackinfo->si_stack;
3399 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3401 PL_stack_base = AvARRAY(PL_curstack);
3402 PL_stack_sp = PL_stack_base;
3403 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3405 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3408 PL_tmps_max = REASONABLE(128);
3410 New(54,PL_markstack,REASONABLE(32),I32);
3411 PL_markstack_ptr = PL_markstack;
3412 PL_markstack_max = PL_markstack + REASONABLE(32);
3416 New(54,PL_scopestack,REASONABLE(32),I32);
3417 PL_scopestack_ix = 0;
3418 PL_scopestack_max = REASONABLE(32);
3420 New(54,PL_savestack,REASONABLE(128),ANY);
3421 PL_savestack_ix = 0;
3422 PL_savestack_max = REASONABLE(128);
3424 New(54,PL_retstack,REASONABLE(16),OP*);
3426 PL_retstack_max = REASONABLE(16);
3434 while (PL_curstackinfo->si_next)
3435 PL_curstackinfo = PL_curstackinfo->si_next;
3436 while (PL_curstackinfo) {
3437 PERL_SI *p = PL_curstackinfo->si_prev;
3438 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3439 Safefree(PL_curstackinfo->si_cxstack);
3440 Safefree(PL_curstackinfo);
3441 PL_curstackinfo = p;
3443 Safefree(PL_tmps_stack);
3444 Safefree(PL_markstack);
3445 Safefree(PL_scopestack);
3446 Safefree(PL_savestack);
3447 Safefree(PL_retstack);
3456 lex_start(PL_linestr);
3458 PL_subname = newSVpvn("main",4);
3462 S_init_predump_symbols(pTHX)
3467 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3468 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3469 GvMULTI_on(PL_stdingv);
3470 io = GvIOp(PL_stdingv);
3471 IoTYPE(io) = IoTYPE_RDONLY;
3472 IoIFP(io) = PerlIO_stdin();
3473 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3475 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3477 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3480 IoTYPE(io) = IoTYPE_WRONLY;
3481 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3483 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3485 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3487 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3488 GvMULTI_on(PL_stderrgv);
3489 io = GvIOp(PL_stderrgv);
3490 IoTYPE(io) = IoTYPE_WRONLY;
3491 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3492 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3494 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3496 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3499 Safefree(PL_osname);
3500 PL_osname = savepv(OSNAME);
3504 Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
3507 argc--,argv++; /* skip name of script */
3508 if (PL_doswitches) {
3509 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3512 if (argv[0][1] == '-' && !argv[0][2]) {
3516 if ((s = strchr(argv[0], '='))) {
3518 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3521 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3524 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3525 GvMULTI_on(PL_argvgv);
3526 (void)gv_AVadd(PL_argvgv);
3527 av_clear(GvAVn(PL_argvgv));
3528 for (; argc > 0; argc--,argv++) {
3529 SV *sv = newSVpv(argv[0],0);
3530 av_push(GvAVn(PL_argvgv),sv);
3531 if (PL_widesyscalls)
3532 (void)sv_utf8_decode(sv);
3537 #ifdef HAS_PROCSELFEXE
3538 /* This is a function so that we don't hold on to MAXPATHLEN
3539 bytes of stack longer than necessary
3542 S_procself_val(pTHX_ SV *sv, char *arg0)
3544 char buf[MAXPATHLEN];
3545 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
3547 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3548 includes a spurious NUL which will cause $^X to fail in system
3549 or backticks (this will prevent extensions from being built and
3550 many tests from working). readlink is not meant to add a NUL.
3551 Normal readlink works fine.
3553 if (len > 0 && buf[len-1] == '\0') {
3557 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
3558 returning the text "unknown" from the readlink rather than the path
3559 to the executable (or returning an error from the readlink). Any valid
3560 path has a '/' in it somewhere, so use that to validate the result.
3561 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
3563 if (len > 0 && memchr(buf, '/', len)) {
3564 sv_setpvn(sv,buf,len);
3570 #endif /* HAS_PROCSELFEXE */
3573 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3579 PL_toptarget = NEWSV(0,0);
3580 sv_upgrade(PL_toptarget, SVt_PVFM);
3581 sv_setpvn(PL_toptarget, "", 0);
3582 PL_bodytarget = NEWSV(0,0);
3583 sv_upgrade(PL_bodytarget, SVt_PVFM);
3584 sv_setpvn(PL_bodytarget, "", 0);
3585 PL_formtarget = PL_bodytarget;
3589 init_argv_symbols(argc,argv);
3591 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3592 #ifdef MACOS_TRADITIONAL
3593 /* $0 is not majick on a Mac */
3594 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3596 sv_setpv(GvSV(tmpgv),PL_origfilename);
3597 magicname("0", "0", 1);
3600 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
3601 #ifdef HAS_PROCSELFEXE
3602 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
3605 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3607 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3611 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3613 GvMULTI_on(PL_envgv);
3614 hv = GvHVn(PL_envgv);
3615 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3616 #ifdef USE_ENVIRON_ARRAY
3617 /* Note that if the supplied env parameter is actually a copy
3618 of the global environ then it may now point to free'd memory
3619 if the environment has been modified since. To avoid this
3620 problem we treat env==NULL as meaning 'use the default'
3625 # ifdef USE_ITHREADS
3626 && PL_curinterp == aTHX
3630 environ[0] = Nullch;
3633 for (; *env; env++) {
3634 if (!(s = strchr(*env,'=')))
3641 sv = newSVpv(s+1, 0);
3642 (void)hv_store(hv, *env, s - *env, sv, 0);
3646 #endif /* USE_ENVIRON_ARRAY */
3649 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV))) {
3650 SvREADONLY_off(GvSV(tmpgv));
3651 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3652 SvREADONLY_on(GvSV(tmpgv));
3655 /* touch @F array to prevent spurious warnings 20020415 MJD */
3657 (void) get_av("main::F", TRUE | GV_ADDMULTI);
3659 /* touch @- and @+ arrays to prevent spurious warnings 20020415 MJD */
3660 (void) get_av("main::-", TRUE | GV_ADDMULTI);
3661 (void) get_av("main::+", TRUE | GV_ADDMULTI);
3665 S_init_perllib(pTHX)
3670 s = PerlEnv_getenv("PERL5LIB");
3672 incpush(s, TRUE, TRUE);
3674 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3676 /* Treat PERL5?LIB as a possible search list logical name -- the
3677 * "natural" VMS idiom for a Unix path string. We allow each
3678 * element to be a set of |-separated directories for compatibility.
3682 if (my_trnlnm("PERL5LIB",buf,0))
3683 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3685 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3689 /* Use the ~-expanded versions of APPLLIB (undocumented),
3690 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3693 incpush(APPLLIB_EXP, TRUE, TRUE);
3697 incpush(ARCHLIB_EXP, FALSE, FALSE);
3699 #ifdef MACOS_TRADITIONAL
3702 SV * privdir = NEWSV(55, 0);
3703 char * macperl = PerlEnv_getenv("MACPERL");
3708 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3709 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3710 incpush(SvPVX(privdir), TRUE, FALSE);
3711 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3712 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3713 incpush(SvPVX(privdir), TRUE, FALSE);
3715 SvREFCNT_dec(privdir);
3718 incpush(":", FALSE, FALSE);
3721 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3724 incpush(PRIVLIB_EXP, TRUE, FALSE);
3726 incpush(PRIVLIB_EXP, FALSE, FALSE);
3730 /* sitearch is always relative to sitelib on Windows for
3731 * DLL-based path intuition to work correctly */
3732 # if !defined(WIN32)
3733 incpush(SITEARCH_EXP, FALSE, FALSE);
3739 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3741 incpush(SITELIB_EXP, FALSE, FALSE);
3745 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3746 incpush(SITELIB_STEM, FALSE, TRUE);
3749 #ifdef PERL_VENDORARCH_EXP
3750 /* vendorarch is always relative to vendorlib on Windows for
3751 * DLL-based path intuition to work correctly */
3752 # if !defined(WIN32)
3753 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3757 #ifdef PERL_VENDORLIB_EXP
3759 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3761 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3765 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3766 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3769 #ifdef PERL_OTHERLIBDIRS
3770 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3774 incpush(".", FALSE, FALSE);
3775 #endif /* MACOS_TRADITIONAL */
3778 #if defined(DOSISH) || defined(EPOC)
3779 # define PERLLIB_SEP ';'
3782 # define PERLLIB_SEP '|'
3784 # if defined(MACOS_TRADITIONAL)
3785 # define PERLLIB_SEP ','
3787 # define PERLLIB_SEP ':'
3791 #ifndef PERLLIB_MANGLE
3792 # define PERLLIB_MANGLE(s,n) (s)
3796 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3798 SV *subdir = Nullsv;
3803 if (addsubdirs || addoldvers) {
3804 subdir = sv_newmortal();
3807 /* Break at all separators */
3809 SV *libdir = NEWSV(55,0);
3812 /* skip any consecutive separators */
3813 while ( *p == PERLLIB_SEP ) {
3814 /* Uncomment the next line for PATH semantics */
3815 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3819 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3820 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3825 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3826 p = Nullch; /* break out */
3828 #ifdef MACOS_TRADITIONAL
3829 if (!strchr(SvPVX(libdir), ':')) {
3832 sv_setpv(libdir, MacPerl_CanonDir(SvPVX(libdir), buf, 0));
3834 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3835 sv_catpv(libdir, ":");
3839 * BEFORE pushing libdir onto @INC we may first push version- and
3840 * archname-specific sub-directories.
3842 if (addsubdirs || addoldvers) {
3843 #ifdef PERL_INC_VERSION_LIST
3844 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3845 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3846 const char **incver;
3853 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3855 while (unix[len-1] == '/') len--; /* Cosmetic */
3856 sv_usepvn(libdir,unix,len);
3859 PerlIO_printf(Perl_error_log,
3860 "Failed to unixify @INC element \"%s\"\n",
3864 #ifdef MACOS_TRADITIONAL
3865 #define PERL_AV_SUFFIX_FMT ""
3866 #define PERL_ARCH_FMT "%s:"
3867 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3869 #define PERL_AV_SUFFIX_FMT "/"
3870 #define PERL_ARCH_FMT "/%s"
3871 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3873 /* .../version/archname if -d .../version/archname */
3874 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3876 (int)PERL_REVISION, (int)PERL_VERSION,
3877 (int)PERL_SUBVERSION, ARCHNAME);
3878 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3879 S_ISDIR(tmpstatbuf.st_mode))
3880 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3882 /* .../version if -d .../version */
3883 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3884 (int)PERL_REVISION, (int)PERL_VERSION,
3885 (int)PERL_SUBVERSION);
3886 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3887 S_ISDIR(tmpstatbuf.st_mode))
3888 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3890 /* .../archname if -d .../archname */
3891 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3892 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3893 S_ISDIR(tmpstatbuf.st_mode))
3894 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3897 #ifdef PERL_INC_VERSION_LIST
3899 for (incver = incverlist; *incver; incver++) {
3900 /* .../xxx if -d .../xxx */
3901 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3902 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3903 S_ISDIR(tmpstatbuf.st_mode))
3904 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3910 /* finally push this lib directory on the end of @INC */
3911 av_push(GvAVn(PL_incgv), libdir);
3915 #ifdef USE_5005THREADS
3916 STATIC struct perl_thread *
3917 S_init_main_thread(pTHX)
3919 #if !defined(PERL_IMPLICIT_CONTEXT)
3920 struct perl_thread *thr;
3924 Newz(53, thr, 1, struct perl_thread);
3925 PL_curcop = &PL_compiling;
3926 thr->interp = PERL_GET_INTERP;
3927 thr->cvcache = newHV();
3928 thr->threadsv = newAV();
3929 /* thr->threadsvp is set when find_threadsv is called */
3930 thr->specific = newAV();
3931 thr->flags = THRf_R_JOINABLE;
3932 MUTEX_INIT(&thr->mutex);
3933 /* Handcraft thrsv similarly to mess_sv */
3934 New(53, PL_thrsv, 1, SV);
3935 Newz(53, xpv, 1, XPV);
3936 SvFLAGS(PL_thrsv) = SVt_PV;
3937 SvANY(PL_thrsv) = (void*)xpv;
3938 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3939 SvPVX(PL_thrsv) = (char*)thr;
3940 SvCUR_set(PL_thrsv, sizeof(thr));
3941 SvLEN_set(PL_thrsv, sizeof(thr));
3942 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3943 thr->oursv = PL_thrsv;
3944 PL_chopset = " \n-";
3947 MUTEX_LOCK(&PL_threads_mutex);
3953 MUTEX_UNLOCK(&PL_threads_mutex);
3955 #ifdef HAVE_THREAD_INTERN
3956 Perl_init_thread_intern(thr);
3959 #ifdef SET_THREAD_SELF
3960 SET_THREAD_SELF(thr);
3962 thr->self = pthread_self();
3963 #endif /* SET_THREAD_SELF */
3967 * These must come after the thread self setting
3968 * because sv_setpvn does SvTAINT and the taint
3969 * fields thread selfness being set.
3971 PL_toptarget = NEWSV(0,0);
3972 sv_upgrade(PL_toptarget, SVt_PVFM);
3973 sv_setpvn(PL_toptarget, "", 0);
3974 PL_bodytarget = NEWSV(0,0);
3975 sv_upgrade(PL_bodytarget, SVt_PVFM);
3976 sv_setpvn(PL_bodytarget, "", 0);
3977 PL_formtarget = PL_bodytarget;
3978 thr->errsv = newSVpvn("", 0);
3979 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3982 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3983 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3984 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3985 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3986 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3987 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3989 PL_reginterp_cnt = 0;
3993 #endif /* USE_5005THREADS */
3996 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3999 line_t oldline = CopLINE(PL_curcop);
4005 while (AvFILL(paramList) >= 0) {
4006 cv = (CV*)av_shift(paramList);
4007 if (PL_savebegin && (paramList == PL_beginav)) {
4008 /* save PL_beginav for compiler */
4009 if (! PL_beginav_save)
4010 PL_beginav_save = newAV();
4011 av_push(PL_beginav_save, (SV*)cv);
4015 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4016 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
4022 #ifndef PERL_FLEXIBLE_EXCEPTIONS
4026 (void)SvPV(atsv, len);
4029 PL_curcop = &PL_compiling;
4030 CopLINE_set(PL_curcop, oldline);
4031 if (paramList == PL_beginav)
4032 sv_catpv(atsv, "BEGIN failed--compilation aborted");
4034 Perl_sv_catpvf(aTHX_ atsv,
4035 "%s failed--call queue aborted",
4036 paramList == PL_checkav ? "CHECK"
4037 : paramList == PL_initav ? "INIT"
4039 while (PL_scopestack_ix > oldscope)
4042 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
4049 /* my_exit() was called */
4050 while (PL_scopestack_ix > oldscope)
4053 PL_curstash = PL_defstash;
4054 PL_curcop = &PL_compiling;
4055 CopLINE_set(PL_curcop, oldline);
4057 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
4058 if (paramList == PL_beginav)
4059 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
4061 Perl_croak(aTHX_ "%s failed--call queue aborted",
4062 paramList == PL_checkav ? "CHECK"
4063 : paramList == PL_initav ? "INIT"
4070 PL_curcop = &PL_compiling;
4071 CopLINE_set(PL_curcop, oldline);
4074 PerlIO_printf(Perl_error_log, "panic: restartop\n");
4082 #ifdef PERL_FLEXIBLE_EXCEPTIONS
4084 S_vcall_list_body(pTHX_ va_list args)
4086 CV *cv = va_arg(args, CV*);
4087 return call_list_body(cv);
4092 S_call_list_body(pTHX_ CV *cv)
4094 PUSHMARK(PL_stack_sp);
4095 call_sv((SV*)cv, G_EVAL|G_DISCARD);
4100 Perl_my_exit(pTHX_ U32 status)
4102 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
4103 thr, (unsigned long) status));
4112 STATUS_NATIVE_SET(status);
4119 Perl_my_failure_exit(pTHX)
4122 if (vaxc$errno & 1) {
4123 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
4124 STATUS_NATIVE_SET(44);
4127 if (!vaxc$errno && errno) /* unlikely */
4128 STATUS_NATIVE_SET(44);
4130 STATUS_NATIVE_SET(vaxc$errno);
4135 STATUS_POSIX_SET(errno);
4137 exitstatus = STATUS_POSIX >> 8;
4138 if (exitstatus & 255)
4139 STATUS_POSIX_SET(exitstatus);
4141 STATUS_POSIX_SET(255);
4148 S_my_exit_jump(pTHX)
4150 register PERL_CONTEXT *cx;
4155 SvREFCNT_dec(PL_e_script);
4156 PL_e_script = Nullsv;
4159 POPSTACK_TO(PL_mainstack);
4160 if (cxstack_ix >= 0) {
4163 POPBLOCK(cx,PL_curpm);
4171 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4174 p = SvPVX(PL_e_script);
4175 nl = strchr(p, '\n');
4176 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4178 filter_del(read_e_script);
4181 sv_catpvn(buf_sv, p, nl-p);
4182 sv_chop(PL_e_script, nl);