3 * Copyright (c) 1987-2001 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
42 #if defined(USE_5005THREADS)
43 # define INIT_TLS_AND_INTERP \
45 if (!PL_curinterp) { \
46 PERL_SET_INTERP(my_perl); \
52 # if defined(USE_ITHREADS)
53 # define INIT_TLS_AND_INTERP \
55 if (!PL_curinterp) { \
56 PERL_SET_INTERP(my_perl); \
59 PERL_SET_THX(my_perl); \
63 PERL_SET_THX(my_perl); \
67 # define INIT_TLS_AND_INTERP \
69 if (!PL_curinterp) { \
70 PERL_SET_INTERP(my_perl); \
72 PERL_SET_THX(my_perl); \
77 #ifdef PERL_IMPLICIT_SYS
79 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
80 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
81 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
82 struct IPerlDir* ipD, struct IPerlSock* ipS,
83 struct IPerlProc* ipP)
85 PerlInterpreter *my_perl;
86 /* New() needs interpreter, so call malloc() instead */
87 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
89 Zero(my_perl, 1, PerlInterpreter);
105 =for apidoc perl_alloc
107 Allocates a new Perl interpreter. See L<perlembed>.
115 PerlInterpreter *my_perl;
117 /* New() needs interpreter, so call malloc() instead */
118 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
121 Zero(my_perl, 1, PerlInterpreter);
124 #endif /* PERL_IMPLICIT_SYS */
127 =for apidoc perl_construct
129 Initializes a new Perl interpreter. See L<perlembed>.
135 perl_construct(pTHXx)
137 #ifdef USE_5005THREADS
139 struct perl_thread *thr = NULL;
140 #endif /* FAKE_THREADS */
141 #endif /* USE_5005THREADS */
145 PL_perl_destruct_level = 1;
147 if (PL_perl_destruct_level > 0)
151 /* Init the real globals (and main thread)? */
153 #ifdef USE_5005THREADS
154 MUTEX_INIT(&PL_sv_mutex);
156 * Safe to use basic SV functions from now on (though
157 * not things like mortals or tainting yet).
159 MUTEX_INIT(&PL_eval_mutex);
160 COND_INIT(&PL_eval_cond);
161 MUTEX_INIT(&PL_threads_mutex);
162 COND_INIT(&PL_nthreads_cond);
163 # ifdef EMULATE_ATOMIC_REFCOUNTS
164 MUTEX_INIT(&PL_svref_mutex);
165 # endif /* EMULATE_ATOMIC_REFCOUNTS */
167 MUTEX_INIT(&PL_cred_mutex);
168 MUTEX_INIT(&PL_sv_lock_mutex);
169 MUTEX_INIT(&PL_fdpid_mutex);
171 thr = init_main_thread();
172 #endif /* USE_5005THREADS */
174 #ifdef PERL_FLEXIBLE_EXCEPTIONS
175 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
178 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
180 PL_linestr = NEWSV(65,79);
181 sv_upgrade(PL_linestr,SVt_PVIV);
183 if (!SvREADONLY(&PL_sv_undef)) {
184 /* set read-only and try to insure than we wont see REFCNT==0
187 SvREADONLY_on(&PL_sv_undef);
188 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
190 sv_setpv(&PL_sv_no,PL_No);
192 SvREADONLY_on(&PL_sv_no);
193 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
195 sv_setpv(&PL_sv_yes,PL_Yes);
197 SvREADONLY_on(&PL_sv_yes);
198 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
201 PL_sighandlerp = Perl_sighandler;
202 PL_pidstatus = newHV();
206 * There is no way we can refer to them from Perl so close them to save
207 * space. The other alternative would be to provide STDAUX and STDPRN
210 (void)PerlIO_close(PerlIO_importFILE(stdaux, 0));
211 (void)PerlIO_close(PerlIO_importFILE(stdprn, 0));
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);
267 PL_regex_padav = newAV();
268 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
269 PL_regex_pad = AvARRAY(PL_regex_padav);
271 #ifdef USE_REENTRANT_API
272 New(31337, PL_reentrant_buffer,1, REBUF);
273 New(31337, PL_reentrant_buffer->tmbuff,1, struct tm);
276 /* Note that strtab is a rather special HV. Assumptions are made
277 about not iterating on it, and not adding tie magic to it.
278 It is properly deallocated in perl_destruct() */
281 #ifdef USE_5005THREADS
282 MUTEX_INIT(&PL_strtab_mutex);
284 HvSHAREKEYS_off(PL_strtab); /* mandatory */
285 hv_ksplit(PL_strtab, 512);
287 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
288 _dyld_lookup_and_bind
289 ("__environ", (unsigned long *) &environ_pointer, NULL);
292 #ifdef USE_ENVIRON_ARRAY
293 PL_origenviron = environ;
300 =for apidoc perl_destruct
302 Shuts down a Perl interpreter. See L<perlembed>.
310 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
312 #ifdef USE_5005THREADS
315 #endif /* USE_5005THREADS */
317 /* wait for all pseudo-forked children to finish */
318 PERL_WAIT_FOR_CHILDREN;
320 #ifdef USE_5005THREADS
322 /* Pass 1 on any remaining threads: detach joinables, join zombies */
324 MUTEX_LOCK(&PL_threads_mutex);
325 DEBUG_S(PerlIO_printf(Perl_debug_log,
326 "perl_destruct: waiting for %d threads...\n",
328 for (t = thr->next; t != thr; t = t->next) {
329 MUTEX_LOCK(&t->mutex);
330 switch (ThrSTATE(t)) {
333 DEBUG_S(PerlIO_printf(Perl_debug_log,
334 "perl_destruct: joining zombie %p\n", t));
335 ThrSETSTATE(t, THRf_DEAD);
336 MUTEX_UNLOCK(&t->mutex);
339 * The SvREFCNT_dec below may take a long time (e.g. av
340 * may contain an object scalar whose destructor gets
341 * called) so we have to unlock threads_mutex and start
344 MUTEX_UNLOCK(&PL_threads_mutex);
346 SvREFCNT_dec((SV*)av);
347 DEBUG_S(PerlIO_printf(Perl_debug_log,
348 "perl_destruct: joined zombie %p OK\n", t));
350 case THRf_R_JOINABLE:
351 DEBUG_S(PerlIO_printf(Perl_debug_log,
352 "perl_destruct: detaching thread %p\n", t));
353 ThrSETSTATE(t, THRf_R_DETACHED);
355 * We unlock threads_mutex and t->mutex in the opposite order
356 * from which we locked them just so that DETACH won't
357 * deadlock if it panics. It's only a breach of good style
358 * not a bug since they are unlocks not locks.
360 MUTEX_UNLOCK(&PL_threads_mutex);
362 MUTEX_UNLOCK(&t->mutex);
365 DEBUG_S(PerlIO_printf(Perl_debug_log,
366 "perl_destruct: ignoring %p (state %u)\n",
368 MUTEX_UNLOCK(&t->mutex);
369 /* fall through and out */
372 /* We leave the above "Pass 1" loop with threads_mutex still locked */
374 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
375 while (PL_nthreads > 1)
377 DEBUG_S(PerlIO_printf(Perl_debug_log,
378 "perl_destruct: final wait for %d threads\n",
380 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
382 /* At this point, we're the last thread */
383 MUTEX_UNLOCK(&PL_threads_mutex);
384 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
385 MUTEX_DESTROY(&PL_threads_mutex);
386 COND_DESTROY(&PL_nthreads_cond);
388 #endif /* !defined(FAKE_THREADS) */
389 #endif /* USE_5005THREADS */
391 destruct_level = PL_perl_destruct_level;
395 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
397 if (destruct_level < i)
404 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
409 if (PL_endav && !PL_minus_c)
410 call_list(PL_scopestack_ix, PL_endav);
416 /* We must account for everything. */
418 /* Destroy the main CV and syntax tree */
420 PL_curpad = AvARRAY(PL_comppad);
421 op_free(PL_main_root);
422 PL_main_root = Nullop;
424 PL_curcop = &PL_compiling;
425 PL_main_start = Nullop;
426 SvREFCNT_dec(PL_main_cv);
430 /* Tell PerlIO we are about to tear things apart in case
431 we have layers which are using resources that should
435 PerlIO_destruct(aTHX);
437 if (PL_sv_objcount) {
439 * Try to destruct global references. We do this first so that the
440 * destructors and destructees still exist. Some sv's might remain.
441 * Non-referenced objects are on their own.
446 /* unhook hooks which will soon be, or use, destroyed data */
447 SvREFCNT_dec(PL_warnhook);
448 PL_warnhook = Nullsv;
449 SvREFCNT_dec(PL_diehook);
452 /* call exit list functions */
453 while (PL_exitlistlen-- > 0)
454 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
456 Safefree(PL_exitlist);
458 if (destruct_level == 0){
460 DEBUG_P(debprofdump());
462 #if defined(PERLIO_LAYERS)
463 /* No more IO - including error messages ! */
464 PerlIO_cleanup(aTHX);
467 /* The exit() function will do everything that needs doing. */
468 return STATUS_NATIVE_EXPORT;;
471 /* jettison our possibly duplicated environment */
473 #ifdef USE_ENVIRON_ARRAY
474 if (environ != PL_origenviron) {
477 for (i = 0; environ[i]; i++)
478 safesysfree(environ[i]);
480 /* Must use safesysfree() when working with environ. */
481 safesysfree(environ);
483 environ = PL_origenviron;
488 /* the syntax tree is shared between clones
489 * so op_free(PL_main_root) only ReREFCNT_dec's
490 * REGEXPs in the parent interpreter
491 * we need to manually ReREFCNT_dec for the clones
494 I32 i = AvFILLp(PL_regex_padav) + 1;
495 SV **ary = AvARRAY(PL_regex_padav);
499 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
501 if (SvFLAGS(resv) & SVf_BREAK) {
502 /* this is PL_reg_curpm, already freed
503 * flag is set in regexec.c:S_regtry
505 SvFLAGS(resv) &= ~SVf_BREAK;
507 else if(SvREPADTMP(resv)) {
508 SvREPADTMP_off(resv);
515 SvREFCNT_dec(PL_regex_padav);
516 PL_regex_padav = Nullav;
520 /* loosen bonds of global variables */
523 (void)PerlIO_close(PL_rsfp);
527 /* Filters for program text */
528 SvREFCNT_dec(PL_rsfp_filters);
529 PL_rsfp_filters = Nullav;
532 PL_preprocess = FALSE;
538 PL_doswitches = FALSE;
539 PL_dowarn = G_WARN_OFF;
540 PL_doextract = FALSE;
541 PL_sawampersand = FALSE; /* must save all match strings */
544 Safefree(PL_inplace);
546 SvREFCNT_dec(PL_patchlevel);
549 SvREFCNT_dec(PL_e_script);
550 PL_e_script = Nullsv;
553 while (--PL_origargc >= 0) {
554 Safefree(PL_origargv[PL_origargc]);
556 Safefree(PL_origargv);
558 /* magical thingies */
560 SvREFCNT_dec(PL_ofs_sv); /* $, */
563 SvREFCNT_dec(PL_ors_sv); /* $\ */
566 SvREFCNT_dec(PL_rs); /* $/ */
569 PL_multiline = 0; /* $* */
570 Safefree(PL_osname); /* $^O */
573 SvREFCNT_dec(PL_statname);
574 PL_statname = Nullsv;
577 /* defgv, aka *_ should be taken care of elsewhere */
579 /* clean up after study() */
580 SvREFCNT_dec(PL_lastscream);
581 PL_lastscream = Nullsv;
582 Safefree(PL_screamfirst);
584 Safefree(PL_screamnext);
588 Safefree(PL_efloatbuf);
589 PL_efloatbuf = Nullch;
592 /* startup and shutdown function lists */
593 SvREFCNT_dec(PL_beginav);
594 SvREFCNT_dec(PL_beginav_save);
595 SvREFCNT_dec(PL_endav);
596 SvREFCNT_dec(PL_checkav);
597 SvREFCNT_dec(PL_initav);
599 PL_beginav_save = Nullav;
604 /* shortcuts just get cleared */
610 PL_argvoutgv = Nullgv;
612 PL_stderrgv = Nullgv;
613 PL_last_in_gv = Nullgv;
615 PL_debstash = Nullhv;
617 /* reset so print() ends up where we expect */
620 SvREFCNT_dec(PL_argvout_stack);
621 PL_argvout_stack = Nullav;
623 SvREFCNT_dec(PL_modglobal);
624 PL_modglobal = Nullhv;
625 SvREFCNT_dec(PL_preambleav);
626 PL_preambleav = Nullav;
627 SvREFCNT_dec(PL_subname);
629 SvREFCNT_dec(PL_linestr);
631 SvREFCNT_dec(PL_pidstatus);
632 PL_pidstatus = Nullhv;
633 SvREFCNT_dec(PL_toptarget);
634 PL_toptarget = Nullsv;
635 SvREFCNT_dec(PL_bodytarget);
636 PL_bodytarget = Nullsv;
637 PL_formtarget = Nullsv;
639 /* free locale stuff */
640 #ifdef USE_LOCALE_COLLATE
641 Safefree(PL_collation_name);
642 PL_collation_name = Nullch;
645 #ifdef USE_LOCALE_NUMERIC
646 Safefree(PL_numeric_name);
647 PL_numeric_name = Nullch;
648 SvREFCNT_dec(PL_numeric_radix_sv);
651 /* clear utf8 character classes */
652 SvREFCNT_dec(PL_utf8_alnum);
653 SvREFCNT_dec(PL_utf8_alnumc);
654 SvREFCNT_dec(PL_utf8_ascii);
655 SvREFCNT_dec(PL_utf8_alpha);
656 SvREFCNT_dec(PL_utf8_space);
657 SvREFCNT_dec(PL_utf8_cntrl);
658 SvREFCNT_dec(PL_utf8_graph);
659 SvREFCNT_dec(PL_utf8_digit);
660 SvREFCNT_dec(PL_utf8_upper);
661 SvREFCNT_dec(PL_utf8_lower);
662 SvREFCNT_dec(PL_utf8_print);
663 SvREFCNT_dec(PL_utf8_punct);
664 SvREFCNT_dec(PL_utf8_xdigit);
665 SvREFCNT_dec(PL_utf8_mark);
666 SvREFCNT_dec(PL_utf8_toupper);
667 SvREFCNT_dec(PL_utf8_totitle);
668 SvREFCNT_dec(PL_utf8_tolower);
669 PL_utf8_alnum = Nullsv;
670 PL_utf8_alnumc = Nullsv;
671 PL_utf8_ascii = Nullsv;
672 PL_utf8_alpha = Nullsv;
673 PL_utf8_space = Nullsv;
674 PL_utf8_cntrl = Nullsv;
675 PL_utf8_graph = Nullsv;
676 PL_utf8_digit = Nullsv;
677 PL_utf8_upper = Nullsv;
678 PL_utf8_lower = Nullsv;
679 PL_utf8_print = Nullsv;
680 PL_utf8_punct = Nullsv;
681 PL_utf8_xdigit = Nullsv;
682 PL_utf8_mark = Nullsv;
683 PL_utf8_toupper = Nullsv;
684 PL_utf8_totitle = Nullsv;
685 PL_utf8_tolower = Nullsv;
687 if (!specialWARN(PL_compiling.cop_warnings))
688 SvREFCNT_dec(PL_compiling.cop_warnings);
689 PL_compiling.cop_warnings = Nullsv;
690 if (!specialCopIO(PL_compiling.cop_io))
691 SvREFCNT_dec(PL_compiling.cop_io);
692 PL_compiling.cop_io = Nullsv;
694 Safefree(CopFILE(&PL_compiling));
695 CopFILE(&PL_compiling) = Nullch;
696 Safefree(CopSTASHPV(&PL_compiling));
698 SvREFCNT_dec(CopFILEGV(&PL_compiling));
699 CopFILEGV(&PL_compiling) = Nullgv;
700 /* cop_stash is not refcounted */
703 /* Prepare to destruct main symbol table. */
708 SvREFCNT_dec(PL_curstname);
709 PL_curstname = Nullsv;
711 /* clear queued errors */
712 SvREFCNT_dec(PL_errors);
716 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
717 if (PL_scopestack_ix != 0)
718 Perl_warner(aTHX_ WARN_INTERNAL,
719 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
720 (long)PL_scopestack_ix);
721 if (PL_savestack_ix != 0)
722 Perl_warner(aTHX_ WARN_INTERNAL,
723 "Unbalanced saves: %ld more saves than restores\n",
724 (long)PL_savestack_ix);
725 if (PL_tmps_floor != -1)
726 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
727 (long)PL_tmps_floor + 1);
728 if (cxstack_ix != -1)
729 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
730 (long)cxstack_ix + 1);
733 /* Now absolutely destruct everything, somehow or other, loops or no. */
734 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
735 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
737 /* the 2 is for PL_fdpid and PL_strtab */
738 while (PL_sv_count > 2 && sv_clean_all())
741 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
742 SvFLAGS(PL_fdpid) |= SVt_PVAV;
743 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
744 SvFLAGS(PL_strtab) |= SVt_PVHV;
746 AvREAL_off(PL_fdpid); /* no surviving entries */
747 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
750 #ifdef HAVE_INTERP_INTERN
754 /* Destruct the global string table. */
756 /* Yell and reset the HeVAL() slots that are still holding refcounts,
757 * so that sv_free() won't fail on them.
765 max = HvMAX(PL_strtab);
766 array = HvARRAY(PL_strtab);
769 if (hent && ckWARN_d(WARN_INTERNAL)) {
770 Perl_warner(aTHX_ WARN_INTERNAL,
771 "Unbalanced string table refcount: (%d) for \"%s\"",
772 HeVAL(hent) - Nullsv, HeKEY(hent));
773 HeVAL(hent) = Nullsv;
783 SvREFCNT_dec(PL_strtab);
786 /* free the pointer table used for cloning */
787 ptr_table_free(PL_ptr_table);
790 /* free special SVs */
792 SvREFCNT(&PL_sv_yes) = 0;
793 sv_clear(&PL_sv_yes);
794 SvANY(&PL_sv_yes) = NULL;
795 SvFLAGS(&PL_sv_yes) = 0;
797 SvREFCNT(&PL_sv_no) = 0;
799 SvANY(&PL_sv_no) = NULL;
800 SvFLAGS(&PL_sv_no) = 0;
802 SvREFCNT(&PL_sv_undef) = 0;
803 SvREADONLY_off(&PL_sv_undef);
805 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
806 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
808 #if defined(PERLIO_LAYERS)
809 /* No more IO - including error messages ! */
810 PerlIO_cleanup(aTHX);
813 Safefree(PL_origfilename);
814 Safefree(PL_reg_start_tmp);
816 Safefree(PL_reg_curpm);
817 Safefree(PL_reg_poscache);
818 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
819 Safefree(PL_op_mask);
820 Safefree(PL_psig_ptr);
821 Safefree(PL_psig_name);
822 Safefree(PL_bitcount);
823 Safefree(PL_psig_pend);
825 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
827 DEBUG_P(debprofdump());
828 #ifdef USE_5005THREADS
829 MUTEX_DESTROY(&PL_strtab_mutex);
830 MUTEX_DESTROY(&PL_sv_mutex);
831 MUTEX_DESTROY(&PL_eval_mutex);
832 MUTEX_DESTROY(&PL_cred_mutex);
833 MUTEX_DESTROY(&PL_fdpid_mutex);
834 COND_DESTROY(&PL_eval_cond);
835 #ifdef EMULATE_ATOMIC_REFCOUNTS
836 MUTEX_DESTROY(&PL_svref_mutex);
837 #endif /* EMULATE_ATOMIC_REFCOUNTS */
839 /* As the penultimate thing, free the non-arena SV for thrsv */
840 Safefree(SvPVX(PL_thrsv));
841 Safefree(SvANY(PL_thrsv));
844 #endif /* USE_5005THREADS */
846 #ifdef USE_REENTRANT_API
847 Safefree(PL_reentrant_buffer->tmbuff);
848 Safefree(PL_reentrant_buffer);
853 /* As the absolutely last thing, free the non-arena SV for mess() */
856 /* it could have accumulated taint magic */
857 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
860 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
861 moremagic = mg->mg_moremagic;
862 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
864 Safefree(mg->mg_ptr);
868 /* we know that type >= SVt_PV */
869 (void)SvOOK_off(PL_mess_sv);
870 Safefree(SvPVX(PL_mess_sv));
871 Safefree(SvANY(PL_mess_sv));
872 Safefree(PL_mess_sv);
875 return STATUS_NATIVE_EXPORT;
879 =for apidoc perl_free
881 Releases a Perl interpreter. See L<perlembed>.
889 #if defined(WIN32) || defined(NETWARE)
890 # if defined(PERL_IMPLICIT_SYS)
892 void *host = nw_internal_host;
894 void *host = w32_internal_host;
898 nw5_delete_internal_host(host);
900 win32_delete_internal_host(host);
911 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
913 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
914 PL_exitlist[PL_exitlistlen].fn = fn;
915 PL_exitlist[PL_exitlistlen].ptr = ptr;
920 =for apidoc perl_parse
922 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
928 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
933 #ifdef USE_5005THREADS
937 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
940 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
941 setuid perl scripts securely.\n");
947 /* we copy rather than point to argv
948 * since perl_clone will copy and perl_destruct
949 * has no way of knowing if we've made a copy or
953 New(0, PL_origargv, i+1, char*);
954 PL_origargv[i] = '\0';
956 PL_origargv[i] = savepv(argv[i]);
964 /* Come here if running an undumped a.out. */
966 PL_origfilename = savepv(argv[0]);
967 PL_do_undump = FALSE;
968 cxstack_ix = -1; /* start label stack again */
970 init_postdump_symbols(argc,argv,env);
975 PL_curpad = AvARRAY(PL_comppad);
976 op_free(PL_main_root);
977 PL_main_root = Nullop;
979 PL_main_start = Nullop;
980 SvREFCNT_dec(PL_main_cv);
984 oldscope = PL_scopestack_ix;
985 PL_dowarn = G_WARN_OFF;
987 #ifdef PERL_FLEXIBLE_EXCEPTIONS
988 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
994 #ifndef PERL_FLEXIBLE_EXCEPTIONS
995 parse_body(env,xsinit);
998 call_list(oldscope, PL_checkav);
1005 /* my_exit() was called */
1006 while (PL_scopestack_ix > oldscope)
1009 PL_curstash = PL_defstash;
1011 call_list(oldscope, PL_checkav);
1012 ret = STATUS_NATIVE_EXPORT;
1015 PerlIO_printf(Perl_error_log, "panic: top_env\n");
1023 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1025 S_vparse_body(pTHX_ va_list args)
1027 char **env = va_arg(args, char**);
1028 XSINIT_t xsinit = va_arg(args, XSINIT_t);
1030 return parse_body(env, xsinit);
1035 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
1037 int argc = PL_origargc;
1038 char **argv = PL_origargv;
1039 char *scriptname = NULL;
1041 VOL bool dosearch = FALSE;
1042 char *validarg = "";
1046 char *cddir = Nullch;
1048 sv_setpvn(PL_linestr,"",0);
1049 sv = newSVpvn("",0); /* first used for -I flags */
1053 for (argc--,argv++; argc > 0; argc--,argv++) {
1054 if (argv[0][0] != '-' || !argv[0][1])
1058 validarg = " PHOOEY ";
1067 win32_argv2utf8(argc-1, argv+1);
1070 #ifndef PERL_STRICT_CR
1094 if ((s = moreswitches(s)))
1104 #ifdef MACOS_TRADITIONAL
1105 /* ignore -e for Dev:Pseudo argument */
1106 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1109 if (PL_euid != PL_uid || PL_egid != PL_gid)
1110 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1112 PL_e_script = newSVpvn("",0);
1113 filter_add(read_e_script, NULL);
1116 sv_catpv(PL_e_script, s);
1118 sv_catpv(PL_e_script, argv[1]);
1122 Perl_croak(aTHX_ "No code specified for -e");
1123 sv_catpv(PL_e_script, "\n");
1126 case 'I': /* -I handled both here and in moreswitches() */
1128 if (!*++s && (s=argv[1]) != Nullch) {
1133 STRLEN len = strlen(s);
1134 p = savepvn(s, len);
1135 incpush(p, TRUE, TRUE);
1136 sv_catpvn(sv, "-I", 2);
1137 sv_catpvn(sv, p, len);
1138 sv_catpvn(sv, " ", 1);
1142 Perl_croak(aTHX_ "No directory specified for -I");
1146 PL_preprocess = TRUE;
1156 PL_preambleav = newAV();
1157 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1159 PL_Sv = newSVpv("print myconfig();",0);
1161 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1163 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1165 sv_catpv(PL_Sv,"\" Compile-time options:");
1167 sv_catpv(PL_Sv," DEBUGGING");
1169 # ifdef MULTIPLICITY
1170 sv_catpv(PL_Sv," MULTIPLICITY");
1172 # ifdef USE_5005THREADS
1173 sv_catpv(PL_Sv," USE_5005THREADS");
1175 # ifdef USE_ITHREADS
1176 sv_catpv(PL_Sv," USE_ITHREADS");
1178 # ifdef USE_64_BIT_INT
1179 sv_catpv(PL_Sv," USE_64_BIT_INT");
1181 # ifdef USE_64_BIT_ALL
1182 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1184 # ifdef USE_LONG_DOUBLE
1185 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1187 # ifdef USE_LARGE_FILES
1188 sv_catpv(PL_Sv," USE_LARGE_FILES");
1191 sv_catpv(PL_Sv," USE_SOCKS");
1193 # ifdef PERL_IMPLICIT_CONTEXT
1194 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1196 # ifdef PERL_IMPLICIT_SYS
1197 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1199 sv_catpv(PL_Sv,"\\n\",");
1201 #if defined(LOCAL_PATCH_COUNT)
1202 if (LOCAL_PATCH_COUNT > 0) {
1204 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1205 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1206 if (PL_localpatches[i])
1207 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1211 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1214 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1216 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1219 sv_catpv(PL_Sv, "; \
1221 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1224 push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1227 print \" \\%ENV:\\n @env\\n\" if @env; \
1228 print \" \\@INC:\\n @INC\\n\";");
1231 PL_Sv = newSVpv("config_vars(qw(",0);
1232 sv_catpv(PL_Sv, ++s);
1233 sv_catpv(PL_Sv, "))");
1236 av_push(PL_preambleav, PL_Sv);
1237 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1240 PL_doextract = TRUE;
1248 if (!*++s || isSPACE(*s)) {
1252 /* catch use of gnu style long options */
1253 if (strEQ(s, "version")) {
1257 if (strEQ(s, "help")) {
1264 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1270 #ifndef SECURE_INTERNAL_GETENV
1273 (s = PerlEnv_getenv("PERL5OPT")))
1278 if (*s == '-' && *(s+1) == 'T')
1281 char *popt_copy = Nullch;
1294 if (!strchr("DIMUdmw", *s))
1295 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1299 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1300 s = popt_copy + (s - popt);
1301 d = popt_copy + (d - popt);
1313 scriptname = argv[0];
1316 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1318 else if (scriptname == Nullch) {
1320 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1328 open_script(scriptname,dosearch,sv,&fdscript);
1330 validate_suid(validarg, scriptname,fdscript);
1333 #if defined(SIGCHLD) || defined(SIGCLD)
1336 # define SIGCHLD SIGCLD
1338 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1339 if (sigstate == SIG_IGN) {
1340 if (ckWARN(WARN_SIGNAL))
1341 Perl_warner(aTHX_ WARN_SIGNAL,
1342 "Can't ignore signal CHLD, forcing to default");
1343 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1349 #ifdef MACOS_TRADITIONAL
1350 if (PL_doextract || gMacPerl_AlwaysExtract) {
1355 if (cddir && PerlDir_chdir(cddir) < 0)
1356 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1360 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1361 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1362 CvUNIQUE_on(PL_compcv);
1364 PL_comppad = newAV();
1365 av_push(PL_comppad, Nullsv);
1366 PL_curpad = AvARRAY(PL_comppad);
1367 PL_comppad_name = newAV();
1368 PL_comppad_name_fill = 0;
1369 PL_min_intro_pending = 0;
1371 #ifdef USE_5005THREADS
1372 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1373 PL_curpad[0] = (SV*)newAV();
1374 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1375 CvOWNER(PL_compcv) = 0;
1376 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1377 MUTEX_INIT(CvMUTEXP(PL_compcv));
1378 #endif /* USE_5005THREADS */
1380 comppadlist = newAV();
1381 AvREAL_off(comppadlist);
1382 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1383 av_store(comppadlist, 1, (SV*)PL_comppad);
1384 CvPADLIST(PL_compcv) = comppadlist;
1387 boot_core_UNIVERSAL();
1389 boot_core_xsutils();
1393 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
1395 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1401 # ifdef HAS_SOCKS5_INIT
1402 socks5_init(argv[0]);
1408 init_predump_symbols();
1409 /* init_postdump_symbols not currently designed to be called */
1410 /* more than once (ENV isn't cleared first, for example) */
1411 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1413 init_postdump_symbols(argc,argv,env);
1417 /* now parse the script */
1419 SETERRNO(0,SS$_NORMAL);
1421 #ifdef MACOS_TRADITIONAL
1422 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1424 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1426 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1427 MacPerl_MPWFileName(PL_origfilename));
1431 if (yyparse() || PL_error_count) {
1433 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1435 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1440 CopLINE_set(PL_curcop, 0);
1441 PL_curstash = PL_defstash;
1442 PL_preprocess = FALSE;
1444 SvREFCNT_dec(PL_e_script);
1445 PL_e_script = Nullsv;
1449 Not sure that this is still the right place to do this now that we
1450 no longer use PL_nrs. HVDS 2001/09/09
1452 sv_setsv(get_sv("/", TRUE), PL_rs);
1458 SAVECOPFILE(PL_curcop);
1459 SAVECOPLINE(PL_curcop);
1460 gv_check(PL_defstash);
1467 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1468 dump_mstats("after compilation:");
1477 =for apidoc perl_run
1479 Tells a Perl interpreter to run. See L<perlembed>.
1490 #ifdef USE_5005THREADS
1494 oldscope = PL_scopestack_ix;
1499 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1501 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1507 cxstack_ix = -1; /* start context stack again */
1509 case 0: /* normal completion */
1510 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1515 case 2: /* my_exit() */
1516 while (PL_scopestack_ix > oldscope)
1519 PL_curstash = PL_defstash;
1520 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
1521 PL_endav && !PL_minus_c)
1522 call_list(oldscope, PL_endav);
1524 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1525 dump_mstats("after execution: ");
1527 ret = STATUS_NATIVE_EXPORT;
1531 POPSTACK_TO(PL_mainstack);
1534 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1544 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1546 S_vrun_body(pTHX_ va_list args)
1548 I32 oldscope = va_arg(args, I32);
1550 return run_body(oldscope);
1556 S_run_body(pTHX_ I32 oldscope)
1558 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1559 PL_sawampersand ? "Enabling" : "Omitting"));
1561 if (!PL_restartop) {
1562 DEBUG_x(dump_all());
1563 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1564 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1568 #ifdef MACOS_TRADITIONAL
1569 PerlIO_printf(Perl_error_log, "# %s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1571 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1575 if (PERLDB_SINGLE && PL_DBsingle)
1576 sv_setiv(PL_DBsingle, 1);
1578 call_list(oldscope, PL_initav);
1584 PL_op = PL_restartop;
1588 else if (PL_main_start) {
1589 CvDEPTH(PL_main_cv) = 1;
1590 PL_op = PL_main_start;
1600 =for apidoc p||get_sv
1602 Returns the SV of the specified Perl scalar. If C<create> is set and the
1603 Perl variable does not exist then it will be created. If C<create> is not
1604 set and the variable does not exist then NULL is returned.
1610 Perl_get_sv(pTHX_ const char *name, I32 create)
1613 #ifdef USE_5005THREADS
1614 if (name[1] == '\0' && !isALPHA(name[0])) {
1615 PADOFFSET tmp = find_threadsv(name);
1616 if (tmp != NOT_IN_PAD)
1617 return THREADSV(tmp);
1619 #endif /* USE_5005THREADS */
1620 gv = gv_fetchpv(name, create, SVt_PV);
1627 =for apidoc p||get_av
1629 Returns the AV of the specified Perl array. If C<create> is set and the
1630 Perl variable does not exist then it will be created. If C<create> is not
1631 set and the variable does not exist then NULL is returned.
1637 Perl_get_av(pTHX_ const char *name, I32 create)
1639 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1648 =for apidoc p||get_hv
1650 Returns the HV of the specified Perl hash. If C<create> is set and the
1651 Perl variable does not exist then it will be created. If C<create> is not
1652 set and the variable does not exist then NULL is returned.
1658 Perl_get_hv(pTHX_ const char *name, I32 create)
1660 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1669 =for apidoc p||get_cv
1671 Returns the CV of the specified Perl subroutine. If C<create> is set and
1672 the Perl subroutine does not exist then it will be declared (which has the
1673 same effect as saying C<sub name;>). If C<create> is not set and the
1674 subroutine does not exist then NULL is returned.
1680 Perl_get_cv(pTHX_ const char *name, I32 create)
1682 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1683 /* XXX unsafe for threads if eval_owner isn't held */
1684 /* XXX this is probably not what they think they're getting.
1685 * It has the same effect as "sub name;", i.e. just a forward
1687 if (create && !GvCVu(gv))
1688 return newSUB(start_subparse(FALSE, 0),
1689 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1697 /* Be sure to refetch the stack pointer after calling these routines. */
1700 =for apidoc p||call_argv
1702 Performs a callback to the specified Perl sub. See L<perlcall>.
1708 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1710 /* See G_* flags in cop.h */
1711 /* null terminated arg list */
1718 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1723 return call_pv(sub_name, flags);
1727 =for apidoc p||call_pv
1729 Performs a callback to the specified Perl sub. See L<perlcall>.
1735 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1736 /* name of the subroutine */
1737 /* See G_* flags in cop.h */
1739 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1743 =for apidoc p||call_method
1745 Performs a callback to the specified Perl method. The blessed object must
1746 be on the stack. See L<perlcall>.
1752 Perl_call_method(pTHX_ const char *methname, I32 flags)
1753 /* name of the subroutine */
1754 /* See G_* flags in cop.h */
1756 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1759 /* May be called with any of a CV, a GV, or an SV containing the name. */
1761 =for apidoc p||call_sv
1763 Performs a callback to the Perl sub whose name is in the SV. See
1770 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1771 /* See G_* flags in cop.h */
1774 LOGOP myop; /* fake syntax tree node */
1777 volatile I32 retval = 0;
1779 bool oldcatch = CATCH_GET;
1784 if (flags & G_DISCARD) {
1789 Zero(&myop, 1, LOGOP);
1790 myop.op_next = Nullop;
1791 if (!(flags & G_NOARGS))
1792 myop.op_flags |= OPf_STACKED;
1793 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1794 (flags & G_ARRAY) ? OPf_WANT_LIST :
1799 EXTEND(PL_stack_sp, 1);
1800 *++PL_stack_sp = sv;
1802 oldscope = PL_scopestack_ix;
1804 if (PERLDB_SUB && PL_curstash != PL_debstash
1805 /* Handle first BEGIN of -d. */
1806 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1807 /* Try harder, since this may have been a sighandler, thus
1808 * curstash may be meaningless. */
1809 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1810 && !(flags & G_NODEBUG))
1811 PL_op->op_private |= OPpENTERSUB_DB;
1813 if (flags & G_METHOD) {
1814 Zero(&method_op, 1, UNOP);
1815 method_op.op_next = PL_op;
1816 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1817 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1818 PL_op = (OP*)&method_op;
1821 if (!(flags & G_EVAL)) {
1823 call_body((OP*)&myop, FALSE);
1824 retval = PL_stack_sp - (PL_stack_base + oldmark);
1825 CATCH_SET(oldcatch);
1828 myop.op_other = (OP*)&myop;
1830 /* we're trying to emulate pp_entertry() here */
1832 register PERL_CONTEXT *cx;
1833 I32 gimme = GIMME_V;
1838 push_return(Nullop);
1839 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1841 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1843 PL_in_eval = EVAL_INEVAL;
1844 if (flags & G_KEEPERR)
1845 PL_in_eval |= EVAL_KEEPERR;
1851 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1853 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1860 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1862 call_body((OP*)&myop, FALSE);
1864 retval = PL_stack_sp - (PL_stack_base + oldmark);
1865 if (!(flags & G_KEEPERR))
1872 /* my_exit() was called */
1873 PL_curstash = PL_defstash;
1876 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1877 Perl_croak(aTHX_ "Callback called exit");
1882 PL_op = PL_restartop;
1886 PL_stack_sp = PL_stack_base + oldmark;
1887 if (flags & G_ARRAY)
1891 *++PL_stack_sp = &PL_sv_undef;
1896 if (PL_scopestack_ix > oldscope) {
1900 register PERL_CONTEXT *cx;
1912 if (flags & G_DISCARD) {
1913 PL_stack_sp = PL_stack_base + oldmark;
1922 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1924 S_vcall_body(pTHX_ va_list args)
1926 OP *myop = va_arg(args, OP*);
1927 int is_eval = va_arg(args, int);
1929 call_body(myop, is_eval);
1935 S_call_body(pTHX_ OP *myop, int is_eval)
1937 if (PL_op == myop) {
1939 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1941 PL_op = Perl_pp_entersub(aTHX); /* this does */
1947 /* Eval a string. The G_EVAL flag is always assumed. */
1950 =for apidoc p||eval_sv
1952 Tells Perl to C<eval> the string in the SV.
1958 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1960 /* See G_* flags in cop.h */
1963 UNOP myop; /* fake syntax tree node */
1964 volatile I32 oldmark = SP - PL_stack_base;
1965 volatile I32 retval = 0;
1971 if (flags & G_DISCARD) {
1978 Zero(PL_op, 1, UNOP);
1979 EXTEND(PL_stack_sp, 1);
1980 *++PL_stack_sp = sv;
1981 oldscope = PL_scopestack_ix;
1983 if (!(flags & G_NOARGS))
1984 myop.op_flags = OPf_STACKED;
1985 myop.op_next = Nullop;
1986 myop.op_type = OP_ENTEREVAL;
1987 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1988 (flags & G_ARRAY) ? OPf_WANT_LIST :
1990 if (flags & G_KEEPERR)
1991 myop.op_flags |= OPf_SPECIAL;
1993 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1995 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
2002 #ifndef PERL_FLEXIBLE_EXCEPTIONS
2004 call_body((OP*)&myop,TRUE);
2006 retval = PL_stack_sp - (PL_stack_base + oldmark);
2007 if (!(flags & G_KEEPERR))
2014 /* my_exit() was called */
2015 PL_curstash = PL_defstash;
2018 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
2019 Perl_croak(aTHX_ "Callback called exit");
2024 PL_op = PL_restartop;
2028 PL_stack_sp = PL_stack_base + oldmark;
2029 if (flags & G_ARRAY)
2033 *++PL_stack_sp = &PL_sv_undef;
2039 if (flags & G_DISCARD) {
2040 PL_stack_sp = PL_stack_base + oldmark;
2050 =for apidoc p||eval_pv
2052 Tells Perl to C<eval> the given string and return an SV* result.
2058 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
2061 SV* sv = newSVpv(p, 0);
2063 eval_sv(sv, G_SCALAR);
2070 if (croak_on_error && SvTRUE(ERRSV)) {
2072 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2078 /* Require a module. */
2081 =for apidoc p||require_pv
2083 Tells Perl to C<require> the file named by the string argument. It is
2084 analogous to the Perl code C<eval "require '$file'">. It's even
2085 implemented that way; consider using Perl_load_module instead.
2090 Perl_require_pv(pTHX_ const char *pv)
2094 PUSHSTACKi(PERLSI_REQUIRE);
2096 sv = sv_newmortal();
2097 sv_setpv(sv, "require '");
2100 eval_sv(sv, G_DISCARD);
2106 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2110 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2111 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
2115 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2117 /* This message really ought to be max 23 lines.
2118 * Removed -h because the user already knows that option. Others? */
2120 static char *usage_msg[] = {
2121 "-0[octal] specify record separator (\\0, if no argument)",
2122 "-a autosplit mode with -n or -p (splits $_ into @F)",
2123 "-C enable native wide character system interfaces",
2124 "-c check syntax only (runs BEGIN and CHECK blocks)",
2125 "-d[:debugger] run program under debugger",
2126 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2127 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2128 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2129 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2130 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2131 "-l[octal] enable line ending processing, specifies line terminator",
2132 "-[mM][-]module execute `use/no module...' before executing program",
2133 "-n assume 'while (<>) { ... }' loop around program",
2134 "-p assume loop like -n but print line also, like sed",
2135 "-P run program through C preprocessor before compilation",
2136 "-s enable rudimentary parsing for switches after programfile",
2137 "-S look for programfile using PATH environment variable",
2138 "-T enable tainting checks",
2139 "-u dump core after parsing program",
2140 "-U allow unsafe operations",
2141 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2142 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2143 "-w enable many useful warnings (RECOMMENDED)",
2144 "-W enable all warnings",
2145 "-X disable all warnings",
2146 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2150 char **p = usage_msg;
2152 PerlIO_printf(PerlIO_stdout(),
2153 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2156 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2159 /* This routine handles any switches that can be given during run */
2162 Perl_moreswitches(pTHX_ char *s)
2172 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2173 SvREFCNT_dec(PL_rs);
2174 if (rschar & ~((U8)~0))
2175 PL_rs = &PL_sv_undef;
2176 else if (!rschar && numlen >= 2)
2177 PL_rs = newSVpvn("", 0);
2180 PL_rs = newSVpvn(&ch, 1);
2185 PL_widesyscalls = TRUE;
2190 PL_splitstr = savepv(s + 1);
2204 /* The following permits -d:Mod to accepts arguments following an =
2205 in the fashion that -MSome::Mod does. */
2206 if (*s == ':' || *s == '=') {
2209 sv = newSVpv("use Devel::", 0);
2211 /* We now allow -d:Module=Foo,Bar */
2212 while(isALNUM(*s) || *s==':') ++s;
2214 sv_catpv(sv, start);
2216 sv_catpvn(sv, start, s-start);
2217 sv_catpv(sv, " split(/,/,q{");
2222 my_setenv("PERL5DB", SvPV(sv, PL_na));
2225 PL_perldb = PERLDB_ALL;
2233 if (isALPHA(s[1])) {
2234 /* if adding extra options, remember to update DEBUG_MASK */
2235 static char debopts[] = "psltocPmfrxuLHXDSTR";
2238 for (s++; *s && (d = strchr(debopts,*s)); s++)
2239 PL_debug |= 1 << (d - debopts);
2242 PL_debug = atoi(s+1);
2243 for (s++; isDIGIT(*s); s++) ;
2245 PL_debug |= DEBUG_TOP_FLAG;
2247 if (ckWARN_d(WARN_DEBUGGING))
2248 Perl_warner(aTHX_ WARN_DEBUGGING,
2249 "Recompile perl with -DDEBUGGING to use -D switch\n");
2250 for (s++; isALNUM(*s); s++) ;
2256 usage(PL_origargv[0]);
2260 Safefree(PL_inplace);
2261 PL_inplace = savepv(s+1);
2263 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2266 if (*s == '-') /* Additional switches on #! line. */
2270 case 'I': /* -I handled both here and in parse_perl() */
2273 while (*s && isSPACE(*s))
2278 /* ignore trailing spaces (possibly followed by other switches) */
2280 for (e = p; *e && !isSPACE(*e); e++) ;
2284 } while (*p && *p != '-');
2285 e = savepvn(s, e-s);
2286 incpush(e, TRUE, TRUE);
2293 Perl_croak(aTHX_ "No directory specified for -I");
2299 SvREFCNT_dec(PL_ors_sv);
2304 PL_ors_sv = newSVpvn("\n",1);
2305 numlen = 3 + (*s == '0');
2306 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
2310 if (RsPARA(PL_rs)) {
2311 PL_ors_sv = newSVpvn("\n\n",2);
2314 PL_ors_sv = newSVsv(PL_rs);
2319 forbid_setid("-M"); /* XXX ? */
2322 forbid_setid("-m"); /* XXX ? */
2327 /* -M-foo == 'no foo' */
2328 if (*s == '-') { use = "no "; ++s; }
2329 sv = newSVpv(use,0);
2331 /* We allow -M'Module qw(Foo Bar)' */
2332 while(isALNUM(*s) || *s==':') ++s;
2334 sv_catpv(sv, start);
2335 if (*(start-1) == 'm') {
2337 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2338 sv_catpv( sv, " ()");
2342 Perl_croak(aTHX_ "Module name required with -%c option",
2344 sv_catpvn(sv, start, s-start);
2345 sv_catpv(sv, " split(/,/,q{");
2351 PL_preambleav = newAV();
2352 av_push(PL_preambleav, sv);
2355 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2367 PL_doswitches = TRUE;
2372 Perl_croak(aTHX_ "Too late for \"-T\" option");
2376 #ifdef MACOS_TRADITIONAL
2377 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2379 PL_do_undump = TRUE;
2388 PerlIO_printf(PerlIO_stdout(),
2389 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2390 PL_patchlevel, ARCHNAME));
2392 /* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2393 PerlIO_printf(PerlIO_stdout(),
2394 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2395 PerlIO_printf(PerlIO_stdout(),
2396 Perl_form(aTHX_ " built under %s at %s %s\n",
2397 OSNAME, __DATE__, __TIME__));
2398 PerlIO_printf(PerlIO_stdout(),
2399 Perl_form(aTHX_ " OS Specific Release: %s\n",
2403 #if defined(LOCAL_PATCH_COUNT)
2404 if (LOCAL_PATCH_COUNT > 0)
2405 PerlIO_printf(PerlIO_stdout(),
2406 "\n(with %d registered patch%s, "
2407 "see perl -V for more detail)",
2408 (int)LOCAL_PATCH_COUNT,
2409 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2412 PerlIO_printf(PerlIO_stdout(),
2413 "\n\nCopyright 1987-2001, Larry Wall\n");
2414 #ifdef MACOS_TRADITIONAL
2415 PerlIO_printf(PerlIO_stdout(),
2416 "\nMac OS port Copyright 1991-2001, Matthias Neeracher;\n"
2417 "maintained by Chris Nandor\n");
2420 PerlIO_printf(PerlIO_stdout(),
2421 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2424 PerlIO_printf(PerlIO_stdout(),
2425 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2426 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2429 PerlIO_printf(PerlIO_stdout(),
2430 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2431 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2434 PerlIO_printf(PerlIO_stdout(),
2435 "atariST series port, ++jrb bammi@cadence.com\n");
2438 PerlIO_printf(PerlIO_stdout(),
2439 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2442 PerlIO_printf(PerlIO_stdout(),
2443 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2001\n");
2446 PerlIO_printf(PerlIO_stdout(),
2447 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2450 PerlIO_printf(PerlIO_stdout(),
2451 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2454 PerlIO_printf(PerlIO_stdout(),
2455 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2458 PerlIO_printf(PerlIO_stdout(),
2459 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2462 PerlIO_printf(PerlIO_stdout(),
2463 "MiNT port by Guido Flohr, 1997-1999\n");
2466 PerlIO_printf(PerlIO_stdout(),
2467 "EPOC port by Olaf Flebbe, 1999-2000\n");
2470 printf("WINCE port by Rainer Keuchel, 2001\n");
2471 printf("Built on " __DATE__ " " __TIME__ "\n\n");
2474 #ifdef BINARY_BUILD_NOTICE
2475 BINARY_BUILD_NOTICE;
2477 PerlIO_printf(PerlIO_stdout(),
2479 Perl may be copied only under the terms of either the Artistic License or the\n\
2480 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2481 Complete documentation for Perl, including FAQ lists, should be found on\n\
2482 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2483 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2486 if (! (PL_dowarn & G_WARN_ALL_MASK))
2487 PL_dowarn |= G_WARN_ON;
2491 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2492 PL_compiling.cop_warnings = pWARN_ALL ;
2496 PL_dowarn = G_WARN_ALL_OFF;
2497 PL_compiling.cop_warnings = pWARN_NONE ;
2502 if (s[1] == '-') /* Additional switches on #! line. */
2507 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2513 #ifdef ALTERNATE_SHEBANG
2514 case 'S': /* OS/2 needs -S on "extproc" line. */
2522 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2527 /* compliments of Tom Christiansen */
2529 /* unexec() can be found in the Gnu emacs distribution */
2530 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2533 Perl_my_unexec(pTHX)
2541 prog = newSVpv(BIN_EXP, 0);
2542 sv_catpv(prog, "/perl");
2543 file = newSVpv(PL_origfilename, 0);
2544 sv_catpv(file, ".perldump");
2546 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2547 /* unexec prints msg to stderr in case of failure */
2548 PerlProc_exit(status);
2551 # include <lib$routines.h>
2552 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2554 ABORT(); /* for use with undump */
2559 /* initialize curinterp */
2565 # define PERLVAR(var,type)
2566 # define PERLVARA(var,n,type)
2567 # if defined(PERL_IMPLICIT_CONTEXT)
2568 # if defined(USE_5005THREADS)
2569 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2570 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2571 # else /* !USE_5005THREADS */
2572 # define PERLVARI(var,type,init) aTHX->var = init;
2573 # define PERLVARIC(var,type,init) aTHX->var = init;
2574 # endif /* USE_5005THREADS */
2576 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2577 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2579 # include "intrpvar.h"
2580 # ifndef USE_5005THREADS
2581 # include "thrdvar.h"
2588 # define PERLVAR(var,type)
2589 # define PERLVARA(var,n,type)
2590 # define PERLVARI(var,type,init) PL_##var = init;
2591 # define PERLVARIC(var,type,init) PL_##var = init;
2592 # include "intrpvar.h"
2593 # ifndef USE_5005THREADS
2594 # include "thrdvar.h"
2605 S_init_main_stash(pTHX)
2611 PL_curstash = PL_defstash = newHV();
2612 PL_curstname = newSVpvn("main",4);
2613 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2614 SvREFCNT_dec(GvHV(gv));
2615 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2617 HvNAME(PL_defstash) = savepv("main");
2618 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2619 GvMULTI_on(PL_incgv);
2620 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2621 GvMULTI_on(PL_hintgv);
2622 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2623 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2624 GvMULTI_on(PL_errgv);
2625 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2626 GvMULTI_on(PL_replgv);
2627 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2628 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2629 sv_setpvn(ERRSV, "", 0);
2630 PL_curstash = PL_defstash;
2631 CopSTASH_set(&PL_compiling, PL_defstash);
2632 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2633 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2634 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2635 /* We must init $/ before switches are processed. */
2636 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2640 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2645 PL_origfilename = savepv("-e");
2648 /* if find_script() returns, it returns a malloc()-ed value */
2649 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2651 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2652 char *s = scriptname + 8;
2653 *fdscript = atoi(s);
2657 scriptname = savepv(s + 1);
2658 Safefree(PL_origfilename);
2659 PL_origfilename = scriptname;
2665 Safefree(CopFILE(PL_curcop));
2667 SvREFCNT_dec(CopFILEGV(PL_curcop));
2669 CopFILE_set(PL_curcop, PL_origfilename);
2670 if (strEQ(PL_origfilename,"-"))
2672 if (*fdscript >= 0) {
2673 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2674 #if defined(HAS_FCNTL) && defined(F_SETFD)
2676 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2679 else if (PL_preprocess) {
2680 char *cpp_cfg = CPPSTDIN;
2681 SV *cpp = newSVpvn("",0);
2682 SV *cmd = NEWSV(0,0);
2684 if (strEQ(cpp_cfg, "cppstdin"))
2685 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2686 sv_catpv(cpp, cpp_cfg);
2688 sv_catpvn(sv, "-I", 2);
2689 sv_catpv(sv,PRIVLIB_EXP);
2691 DEBUG_P(PerlIO_printf(Perl_debug_log,
2692 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2693 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
2694 #if defined(MSDOS) || defined(WIN32)
2695 Perl_sv_setpvf(aTHX_ cmd, "\
2696 sed %s -e \"/^[^#]/b\" \
2697 -e \"/^#[ ]*include[ ]/b\" \
2698 -e \"/^#[ ]*define[ ]/b\" \
2699 -e \"/^#[ ]*if[ ]/b\" \
2700 -e \"/^#[ ]*ifdef[ ]/b\" \
2701 -e \"/^#[ ]*ifndef[ ]/b\" \
2702 -e \"/^#[ ]*else/b\" \
2703 -e \"/^#[ ]*elif[ ]/b\" \
2704 -e \"/^#[ ]*undef[ ]/b\" \
2705 -e \"/^#[ ]*endif/b\" \
2707 %s | %"SVf" -C %"SVf" %s",
2708 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2711 Perl_sv_setpvf(aTHX_ cmd, "\
2712 %s %s -e '/^[^#]/b' \
2713 -e '/^#[ ]*include[ ]/b' \
2714 -e '/^#[ ]*define[ ]/b' \
2715 -e '/^#[ ]*if[ ]/b' \
2716 -e '/^#[ ]*ifdef[ ]/b' \
2717 -e '/^#[ ]*ifndef[ ]/b' \
2718 -e '/^#[ ]*else/b' \
2719 -e '/^#[ ]*elif[ ]/b' \
2720 -e '/^#[ ]*undef[ ]/b' \
2721 -e '/^#[ ]*endif/b' \
2723 %s | %"SVf" %"SVf" %s",
2725 Perl_sv_setpvf(aTHX_ cmd, "\
2726 %s %s -e '/^[^#]/b' \
2727 -e '/^#[ ]*include[ ]/b' \
2728 -e '/^#[ ]*define[ ]/b' \
2729 -e '/^#[ ]*if[ ]/b' \
2730 -e '/^#[ ]*ifdef[ ]/b' \
2731 -e '/^#[ ]*ifndef[ ]/b' \
2732 -e '/^#[ ]*else/b' \
2733 -e '/^#[ ]*elif[ ]/b' \
2734 -e '/^#[ ]*undef[ ]/b' \
2735 -e '/^#[ ]*endif/b' \
2737 %s | %"SVf" -C %"SVf" %s",
2744 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2746 scriptname, cpp, sv, CPPMINUS);
2747 PL_doextract = FALSE;
2748 #ifdef IAMSUID /* actually, this is caught earlier */
2749 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2751 (void)seteuid(PL_uid); /* musn't stay setuid root */
2754 (void)setreuid((Uid_t)-1, PL_uid);
2756 #ifdef HAS_SETRESUID
2757 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2759 PerlProc_setuid(PL_uid);
2763 if (PerlProc_geteuid() != PL_uid)
2764 Perl_croak(aTHX_ "Can't do seteuid!\n");
2766 #endif /* IAMSUID */
2767 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2771 else if (!*scriptname) {
2772 forbid_setid("program input from stdin");
2773 PL_rsfp = PerlIO_stdin();
2776 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2777 #if defined(HAS_FCNTL) && defined(F_SETFD)
2779 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2784 #ifndef IAMSUID /* in case script is not readable before setuid */
2786 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2787 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2790 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2791 (int)PERL_REVISION, (int)PERL_VERSION,
2792 (int)PERL_SUBVERSION), PL_origargv);
2793 Perl_croak(aTHX_ "Can't do setuid\n");
2799 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2802 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2803 CopFILE(PL_curcop), Strerror(errno));
2809 * I_SYSSTATVFS HAS_FSTATVFS
2811 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2812 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2813 * here so that metaconfig picks them up. */
2817 S_fd_on_nosuid_fs(pTHX_ int fd)
2819 int check_okay = 0; /* able to do all the required sys/libcalls */
2820 int on_nosuid = 0; /* the fd is on a nosuid fs */
2822 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2823 * fstatvfs() is UNIX98.
2824 * fstatfs() is 4.3 BSD.
2825 * ustat()+getmnt() is pre-4.3 BSD.
2826 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2827 * an irrelevant filesystem while trying to reach the right one.
2830 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2832 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2833 defined(HAS_FSTATVFS)
2834 # define FD_ON_NOSUID_CHECK_OKAY
2835 struct statvfs stfs;
2837 check_okay = fstatvfs(fd, &stfs) == 0;
2838 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2839 # endif /* fstatvfs */
2841 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2842 defined(PERL_MOUNT_NOSUID) && \
2843 defined(HAS_FSTATFS) && \
2844 defined(HAS_STRUCT_STATFS) && \
2845 defined(HAS_STRUCT_STATFS_F_FLAGS)
2846 # define FD_ON_NOSUID_CHECK_OKAY
2849 check_okay = fstatfs(fd, &stfs) == 0;
2850 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2851 # endif /* fstatfs */
2853 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2854 defined(PERL_MOUNT_NOSUID) && \
2855 defined(HAS_FSTAT) && \
2856 defined(HAS_USTAT) && \
2857 defined(HAS_GETMNT) && \
2858 defined(HAS_STRUCT_FS_DATA) && \
2860 # define FD_ON_NOSUID_CHECK_OKAY
2863 if (fstat(fd, &fdst) == 0) {
2865 if (ustat(fdst.st_dev, &us) == 0) {
2867 /* NOSTAT_ONE here because we're not examining fields which
2868 * vary between that case and STAT_ONE. */
2869 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2870 size_t cmplen = sizeof(us.f_fname);
2871 if (sizeof(fsd.fd_req.path) < cmplen)
2872 cmplen = sizeof(fsd.fd_req.path);
2873 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2874 fdst.st_dev == fsd.fd_req.dev) {
2876 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2882 # endif /* fstat+ustat+getmnt */
2884 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2885 defined(HAS_GETMNTENT) && \
2886 defined(HAS_HASMNTOPT) && \
2887 defined(MNTOPT_NOSUID)
2888 # define FD_ON_NOSUID_CHECK_OKAY
2889 FILE *mtab = fopen("/etc/mtab", "r");
2890 struct mntent *entry;
2891 struct stat stb, fsb;
2893 if (mtab && (fstat(fd, &stb) == 0)) {
2894 while (entry = getmntent(mtab)) {
2895 if (stat(entry->mnt_dir, &fsb) == 0
2896 && fsb.st_dev == stb.st_dev)
2898 /* found the filesystem */
2900 if (hasmntopt(entry, MNTOPT_NOSUID))
2903 } /* A single fs may well fail its stat(). */
2908 # endif /* getmntent+hasmntopt */
2911 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2914 #endif /* IAMSUID */
2917 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2923 /* do we need to emulate setuid on scripts? */
2925 /* This code is for those BSD systems that have setuid #! scripts disabled
2926 * in the kernel because of a security problem. Merely defining DOSUID
2927 * in perl will not fix that problem, but if you have disabled setuid
2928 * scripts in the kernel, this will attempt to emulate setuid and setgid
2929 * on scripts that have those now-otherwise-useless bits set. The setuid
2930 * root version must be called suidperl or sperlN.NNN. If regular perl
2931 * discovers that it has opened a setuid script, it calls suidperl with
2932 * the same argv that it had. If suidperl finds that the script it has
2933 * just opened is NOT setuid root, it sets the effective uid back to the
2934 * uid. We don't just make perl setuid root because that loses the
2935 * effective uid we had before invoking perl, if it was different from the
2938 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2939 * be defined in suidperl only. suidperl must be setuid root. The
2940 * Configure script will set this up for you if you want it.
2946 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2947 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2948 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2953 #ifndef HAS_SETREUID
2954 /* On this access check to make sure the directories are readable,
2955 * there is actually a small window that the user could use to make
2956 * filename point to an accessible directory. So there is a faint
2957 * chance that someone could execute a setuid script down in a
2958 * non-accessible directory. I don't know what to do about that.
2959 * But I don't think it's too important. The manual lies when
2960 * it says access() is useful in setuid programs.
2962 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2963 Perl_croak(aTHX_ "Permission denied");
2965 /* If we can swap euid and uid, then we can determine access rights
2966 * with a simple stat of the file, and then compare device and
2967 * inode to make sure we did stat() on the same file we opened.
2968 * Then we just have to make sure he or she can execute it.
2971 struct stat tmpstatbuf;
2975 setreuid(PL_euid,PL_uid) < 0
2978 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2981 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2982 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2983 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2984 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2985 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2986 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2987 Perl_croak(aTHX_ "Permission denied");
2989 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2990 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2991 (void)PerlIO_close(PL_rsfp);
2992 Perl_croak(aTHX_ "Permission denied\n");
2996 setreuid(PL_uid,PL_euid) < 0
2998 # if defined(HAS_SETRESUID)
2999 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
3002 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
3003 Perl_croak(aTHX_ "Can't reswap uid and euid");
3004 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
3005 Perl_croak(aTHX_ "Permission denied\n");
3007 #endif /* HAS_SETREUID */
3008 #endif /* IAMSUID */
3010 if (!S_ISREG(PL_statbuf.st_mode))
3011 Perl_croak(aTHX_ "Permission denied");
3012 if (PL_statbuf.st_mode & S_IWOTH)
3013 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
3014 PL_doswitches = FALSE; /* -s is insecure in suid */
3015 CopLINE_inc(PL_curcop);
3016 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
3017 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
3018 Perl_croak(aTHX_ "No #! line");
3019 s = SvPV(PL_linestr,n_a)+2;
3021 while (!isSPACE(*s)) s++;
3022 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
3023 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3024 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
3025 Perl_croak(aTHX_ "Not a perl script");
3026 while (*s == ' ' || *s == '\t') s++;
3028 * #! arg must be what we saw above. They can invoke it by
3029 * mentioning suidperl explicitly, but they may not add any strange
3030 * arguments beyond what #! says if they do invoke suidperl that way.
3032 len = strlen(validarg);
3033 if (strEQ(validarg," PHOOEY ") ||
3034 strnNE(s,validarg,len) || !isSPACE(s[len]))
3035 Perl_croak(aTHX_ "Args must match #! line");
3038 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3039 PL_euid == PL_statbuf.st_uid)
3041 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3042 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3043 #endif /* IAMSUID */
3045 if (PL_euid) { /* oops, we're not the setuid root perl */
3046 (void)PerlIO_close(PL_rsfp);
3049 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
3050 (int)PERL_REVISION, (int)PERL_VERSION,
3051 (int)PERL_SUBVERSION), PL_origargv);
3053 Perl_croak(aTHX_ "Can't do setuid\n");
3056 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
3058 (void)setegid(PL_statbuf.st_gid);
3061 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
3063 #ifdef HAS_SETRESGID
3064 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
3066 PerlProc_setgid(PL_statbuf.st_gid);
3070 if (PerlProc_getegid() != PL_statbuf.st_gid)
3071 Perl_croak(aTHX_ "Can't do setegid!\n");
3073 if (PL_statbuf.st_mode & S_ISUID) {
3074 if (PL_statbuf.st_uid != PL_euid)
3076 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
3079 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
3081 #ifdef HAS_SETRESUID
3082 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
3084 PerlProc_setuid(PL_statbuf.st_uid);
3088 if (PerlProc_geteuid() != PL_statbuf.st_uid)
3089 Perl_croak(aTHX_ "Can't do seteuid!\n");
3091 else if (PL_uid) { /* oops, mustn't run as root */
3093 (void)seteuid((Uid_t)PL_uid);
3096 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3098 #ifdef HAS_SETRESUID
3099 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3101 PerlProc_setuid((Uid_t)PL_uid);
3105 if (PerlProc_geteuid() != PL_uid)
3106 Perl_croak(aTHX_ "Can't do seteuid!\n");
3109 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3110 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3113 else if (PL_preprocess)
3114 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3115 else if (fdscript >= 0)
3116 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3118 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3120 /* We absolutely must clear out any saved ids here, so we */
3121 /* exec the real perl, substituting fd script for scriptname. */
3122 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3123 PerlIO_rewind(PL_rsfp);
3124 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3125 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3126 if (!PL_origargv[which])
3127 Perl_croak(aTHX_ "Permission denied");
3128 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3129 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3130 #if defined(HAS_FCNTL) && defined(F_SETFD)
3131 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3133 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3134 (int)PERL_REVISION, (int)PERL_VERSION,
3135 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3136 Perl_croak(aTHX_ "Can't do setuid\n");
3137 #endif /* IAMSUID */
3139 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3140 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3141 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3142 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3144 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3147 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3148 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3149 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3150 /* not set-id, must be wrapped */
3156 S_find_beginning(pTHX)
3158 register char *s, *s2;
3160 /* skip forward in input to the real script? */
3163 #ifdef MACOS_TRADITIONAL
3164 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3166 while (PL_doextract || gMacPerl_AlwaysExtract) {
3167 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3168 if (!gMacPerl_AlwaysExtract)
3169 Perl_croak(aTHX_ "No Perl script found in input\n");
3171 if (PL_doextract) /* require explicit override ? */
3172 if (!OverrideExtract(PL_origfilename))
3173 Perl_croak(aTHX_ "User aborted script\n");
3175 PL_doextract = FALSE;
3177 /* Pater peccavi, file does not have #! */
3178 PerlIO_rewind(PL_rsfp);
3183 while (PL_doextract) {
3184 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3185 Perl_croak(aTHX_ "No Perl script found in input\n");
3188 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3189 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3190 PL_doextract = FALSE;
3191 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3193 while (*s == ' ' || *s == '\t') s++;
3195 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3196 if (strnEQ(s2-4,"perl",4))
3198 while ((s = moreswitches(s)))
3201 #ifdef MACOS_TRADITIONAL
3212 PL_uid = PerlProc_getuid();
3213 PL_euid = PerlProc_geteuid();
3214 PL_gid = PerlProc_getgid();
3215 PL_egid = PerlProc_getegid();
3217 PL_uid |= PL_gid << 16;
3218 PL_euid |= PL_egid << 16;
3220 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3224 S_forbid_setid(pTHX_ char *s)
3226 if (PL_euid != PL_uid)
3227 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3228 if (PL_egid != PL_gid)
3229 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3233 Perl_init_debugger(pTHX)
3235 HV *ostash = PL_curstash;
3237 PL_curstash = PL_debstash;
3238 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3239 AvREAL_off(PL_dbargs);
3240 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3241 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3242 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3243 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3244 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3245 sv_setiv(PL_DBsingle, 0);
3246 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3247 sv_setiv(PL_DBtrace, 0);
3248 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3249 sv_setiv(PL_DBsignal, 0);
3250 PL_curstash = ostash;
3253 #ifndef STRESS_REALLOC
3254 #define REASONABLE(size) (size)
3256 #define REASONABLE(size) (1) /* unreasonable */
3260 Perl_init_stacks(pTHX)
3262 /* start with 128-item stack and 8K cxstack */
3263 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3264 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3265 PL_curstackinfo->si_type = PERLSI_MAIN;
3266 PL_curstack = PL_curstackinfo->si_stack;
3267 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3269 PL_stack_base = AvARRAY(PL_curstack);
3270 PL_stack_sp = PL_stack_base;
3271 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3273 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3276 PL_tmps_max = REASONABLE(128);
3278 New(54,PL_markstack,REASONABLE(32),I32);
3279 PL_markstack_ptr = PL_markstack;
3280 PL_markstack_max = PL_markstack + REASONABLE(32);
3284 New(54,PL_scopestack,REASONABLE(32),I32);
3285 PL_scopestack_ix = 0;
3286 PL_scopestack_max = REASONABLE(32);
3288 New(54,PL_savestack,REASONABLE(128),ANY);
3289 PL_savestack_ix = 0;
3290 PL_savestack_max = REASONABLE(128);
3292 New(54,PL_retstack,REASONABLE(16),OP*);
3294 PL_retstack_max = REASONABLE(16);
3302 while (PL_curstackinfo->si_next)
3303 PL_curstackinfo = PL_curstackinfo->si_next;
3304 while (PL_curstackinfo) {
3305 PERL_SI *p = PL_curstackinfo->si_prev;
3306 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3307 Safefree(PL_curstackinfo->si_cxstack);
3308 Safefree(PL_curstackinfo);
3309 PL_curstackinfo = p;
3311 Safefree(PL_tmps_stack);
3312 Safefree(PL_markstack);
3313 Safefree(PL_scopestack);
3314 Safefree(PL_savestack);
3315 Safefree(PL_retstack);
3324 lex_start(PL_linestr);
3326 PL_subname = newSVpvn("main",4);
3330 S_init_predump_symbols(pTHX)
3335 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3336 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3337 GvMULTI_on(PL_stdingv);
3338 io = GvIOp(PL_stdingv);
3339 IoTYPE(io) = IoTYPE_RDONLY;
3340 IoIFP(io) = PerlIO_stdin();
3341 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3343 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3345 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3348 IoTYPE(io) = IoTYPE_WRONLY;
3349 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3351 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3353 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3355 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3356 GvMULTI_on(PL_stderrgv);
3357 io = GvIOp(PL_stderrgv);
3358 IoTYPE(io) = IoTYPE_WRONLY;
3359 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3360 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3362 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3364 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3367 Safefree(PL_osname);
3368 PL_osname = savepv(OSNAME);
3372 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3377 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3378 char **dup_env_base = 0;
3379 int dup_env_count = 0;
3382 argc--,argv++; /* skip name of script */
3383 if (PL_doswitches) {
3384 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3387 if (argv[0][1] == '-' && !argv[0][2]) {
3391 if ((s = strchr(argv[0], '='))) {
3393 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3396 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3399 PL_toptarget = NEWSV(0,0);
3400 sv_upgrade(PL_toptarget, SVt_PVFM);
3401 sv_setpvn(PL_toptarget, "", 0);
3402 PL_bodytarget = NEWSV(0,0);
3403 sv_upgrade(PL_bodytarget, SVt_PVFM);
3404 sv_setpvn(PL_bodytarget, "", 0);
3405 PL_formtarget = PL_bodytarget;
3408 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3409 #ifdef MACOS_TRADITIONAL
3410 /* $0 is not majick on a Mac */
3411 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3413 sv_setpv(GvSV(tmpgv),PL_origfilename);
3414 magicname("0", "0", 1);
3417 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3419 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3421 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3423 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3424 GvMULTI_on(PL_argvgv);
3425 (void)gv_AVadd(PL_argvgv);
3426 av_clear(GvAVn(PL_argvgv));
3427 for (; argc > 0; argc--,argv++) {
3428 SV *sv = newSVpv(argv[0],0);
3429 av_push(GvAVn(PL_argvgv),sv);
3430 if (PL_widesyscalls)
3431 (void)sv_utf8_decode(sv);
3434 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3436 GvMULTI_on(PL_envgv);
3437 hv = GvHVn(PL_envgv);
3438 hv_magic(hv, Nullgv, PERL_MAGIC_env);
3439 #ifdef USE_ENVIRON_ARRAY
3440 /* Note that if the supplied env parameter is actually a copy
3441 of the global environ then it may now point to free'd memory
3442 if the environment has been modified since. To avoid this
3443 problem we treat env==NULL as meaning 'use the default'
3448 environ[0] = Nullch;
3449 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3452 for (env_base = env; *env; env++)
3454 if ((dup_env_base = (char **)
3455 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3457 for (env = env_base, dup_env = dup_env_base;
3460 /* With environ one needs to use safesysmalloc(). */
3461 *dup_env = safesysmalloc(strlen(*env) + 1);
3462 (void)strcpy(*dup_env, *env);
3468 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3470 for (; *env; env++) {
3471 if (!(s = strchr(*env,'=')))
3477 sv = newSVpv(s--,0);
3478 (void)hv_store(hv, *env, s - *env, sv, 0);
3481 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3484 for (dup_env = dup_env_base; *dup_env; dup_env++)
3485 safesysfree(*dup_env);
3486 safesysfree(dup_env_base);
3488 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3489 #endif /* USE_ENVIRON_ARRAY */
3492 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3493 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3497 S_init_perllib(pTHX)
3502 s = PerlEnv_getenv("PERL5LIB");
3504 incpush(s, TRUE, TRUE);
3506 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3508 /* Treat PERL5?LIB as a possible search list logical name -- the
3509 * "natural" VMS idiom for a Unix path string. We allow each
3510 * element to be a set of |-separated directories for compatibility.
3514 if (my_trnlnm("PERL5LIB",buf,0))
3515 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3517 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3521 /* Use the ~-expanded versions of APPLLIB (undocumented),
3522 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3525 incpush(APPLLIB_EXP, TRUE, TRUE);
3529 incpush(ARCHLIB_EXP, FALSE, FALSE);
3531 #ifdef MACOS_TRADITIONAL
3533 struct stat tmpstatbuf;
3534 SV * privdir = NEWSV(55, 0);
3535 char * macperl = PerlEnv_getenv("MACPERL");
3540 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3541 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3542 incpush(SvPVX(privdir), TRUE, FALSE);
3543 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3544 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3545 incpush(SvPVX(privdir), TRUE, FALSE);
3547 SvREFCNT_dec(privdir);
3550 incpush(":", FALSE, FALSE);
3553 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3556 incpush(PRIVLIB_EXP, TRUE, FALSE);
3558 incpush(PRIVLIB_EXP, FALSE, FALSE);
3562 /* sitearch is always relative to sitelib on Windows for
3563 * DLL-based path intuition to work correctly */
3564 # if !defined(WIN32)
3565 incpush(SITEARCH_EXP, FALSE, FALSE);
3571 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3573 incpush(SITELIB_EXP, FALSE, FALSE);
3577 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3578 incpush(SITELIB_STEM, FALSE, TRUE);
3581 #ifdef PERL_VENDORARCH_EXP
3582 /* vendorarch is always relative to vendorlib on Windows for
3583 * DLL-based path intuition to work correctly */
3584 # if !defined(WIN32)
3585 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3589 #ifdef PERL_VENDORLIB_EXP
3591 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3593 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3597 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3598 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3601 #ifdef PERL_OTHERLIBDIRS
3602 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3606 incpush(".", FALSE, FALSE);
3607 #endif /* MACOS_TRADITIONAL */
3610 #if defined(DOSISH) || defined(EPOC)
3611 # define PERLLIB_SEP ';'
3614 # define PERLLIB_SEP '|'
3616 # if defined(MACOS_TRADITIONAL)
3617 # define PERLLIB_SEP ','
3619 # define PERLLIB_SEP ':'
3623 #ifndef PERLLIB_MANGLE
3624 # define PERLLIB_MANGLE(s,n) (s)
3628 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3630 SV *subdir = Nullsv;
3635 if (addsubdirs || addoldvers) {
3636 subdir = sv_newmortal();
3639 /* Break at all separators */
3641 SV *libdir = NEWSV(55,0);
3644 /* skip any consecutive separators */
3645 while ( *p == PERLLIB_SEP ) {
3646 /* Uncomment the next line for PATH semantics */
3647 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3651 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3652 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3657 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3658 p = Nullch; /* break out */
3660 #ifdef MACOS_TRADITIONAL
3661 if (!strchr(SvPVX(libdir), ':'))
3662 sv_insert(libdir, 0, 0, ":", 1);
3663 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3664 sv_catpv(libdir, ":");
3668 * BEFORE pushing libdir onto @INC we may first push version- and
3669 * archname-specific sub-directories.
3671 if (addsubdirs || addoldvers) {
3672 #ifdef PERL_INC_VERSION_LIST
3673 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3674 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3675 const char **incver;
3677 struct stat tmpstatbuf;
3682 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3684 while (unix[len-1] == '/') len--; /* Cosmetic */
3685 sv_usepvn(libdir,unix,len);
3688 PerlIO_printf(Perl_error_log,
3689 "Failed to unixify @INC element \"%s\"\n",
3693 #ifdef MACOS_TRADITIONAL
3694 #define PERL_AV_SUFFIX_FMT ""
3695 #define PERL_ARCH_FMT "%s:"
3696 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3698 #define PERL_AV_SUFFIX_FMT "/"
3699 #define PERL_ARCH_FMT "/%s"
3700 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3702 /* .../version/archname if -d .../version/archname */
3703 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3705 (int)PERL_REVISION, (int)PERL_VERSION,
3706 (int)PERL_SUBVERSION, ARCHNAME);
3707 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3708 S_ISDIR(tmpstatbuf.st_mode))
3709 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3711 /* .../version if -d .../version */
3712 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3713 (int)PERL_REVISION, (int)PERL_VERSION,
3714 (int)PERL_SUBVERSION);
3715 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3716 S_ISDIR(tmpstatbuf.st_mode))
3717 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3719 /* .../archname if -d .../archname */
3720 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3721 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3722 S_ISDIR(tmpstatbuf.st_mode))
3723 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3726 #ifdef PERL_INC_VERSION_LIST
3728 for (incver = incverlist; *incver; incver++) {
3729 /* .../xxx if -d .../xxx */
3730 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3731 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3732 S_ISDIR(tmpstatbuf.st_mode))
3733 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3739 /* finally push this lib directory on the end of @INC */
3740 av_push(GvAVn(PL_incgv), libdir);
3744 #ifdef USE_5005THREADS
3745 STATIC struct perl_thread *
3746 S_init_main_thread(pTHX)
3748 #if !defined(PERL_IMPLICIT_CONTEXT)
3749 struct perl_thread *thr;
3753 Newz(53, thr, 1, struct perl_thread);
3754 PL_curcop = &PL_compiling;
3755 thr->interp = PERL_GET_INTERP;
3756 thr->cvcache = newHV();
3757 thr->threadsv = newAV();
3758 /* thr->threadsvp is set when find_threadsv is called */
3759 thr->specific = newAV();
3760 thr->flags = THRf_R_JOINABLE;
3761 MUTEX_INIT(&thr->mutex);
3762 /* Handcraft thrsv similarly to mess_sv */
3763 New(53, PL_thrsv, 1, SV);
3764 Newz(53, xpv, 1, XPV);
3765 SvFLAGS(PL_thrsv) = SVt_PV;
3766 SvANY(PL_thrsv) = (void*)xpv;
3767 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3768 SvPVX(PL_thrsv) = (char*)thr;
3769 SvCUR_set(PL_thrsv, sizeof(thr));
3770 SvLEN_set(PL_thrsv, sizeof(thr));
3771 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3772 thr->oursv = PL_thrsv;
3773 PL_chopset = " \n-";
3776 MUTEX_LOCK(&PL_threads_mutex);
3782 MUTEX_UNLOCK(&PL_threads_mutex);
3784 #ifdef HAVE_THREAD_INTERN
3785 Perl_init_thread_intern(thr);
3788 #ifdef SET_THREAD_SELF
3789 SET_THREAD_SELF(thr);
3791 thr->self = pthread_self();
3792 #endif /* SET_THREAD_SELF */
3796 * These must come after the thread self setting
3797 * because sv_setpvn does SvTAINT and the taint
3798 * fields thread selfness being set.
3800 PL_toptarget = NEWSV(0,0);
3801 sv_upgrade(PL_toptarget, SVt_PVFM);
3802 sv_setpvn(PL_toptarget, "", 0);
3803 PL_bodytarget = NEWSV(0,0);
3804 sv_upgrade(PL_bodytarget, SVt_PVFM);
3805 sv_setpvn(PL_bodytarget, "", 0);
3806 PL_formtarget = PL_bodytarget;
3807 thr->errsv = newSVpvn("", 0);
3808 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3811 PL_peepp = MEMBER_TO_FPTR(Perl_peep);
3812 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3813 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3814 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3815 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3816 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3818 PL_reginterp_cnt = 0;
3822 #endif /* USE_5005THREADS */
3825 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3828 line_t oldline = CopLINE(PL_curcop);
3834 while (AvFILL(paramList) >= 0) {
3835 cv = (CV*)av_shift(paramList);
3836 if (PL_savebegin && (paramList == PL_beginav)) {
3837 /* save PL_beginav for compiler */
3838 if (! PL_beginav_save)
3839 PL_beginav_save = newAV();
3840 av_push(PL_beginav_save, (SV*)cv);
3844 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3845 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3851 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3855 (void)SvPV(atsv, len);
3858 PL_curcop = &PL_compiling;
3859 CopLINE_set(PL_curcop, oldline);
3860 if (paramList == PL_beginav)
3861 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3863 Perl_sv_catpvf(aTHX_ atsv,
3864 "%s failed--call queue aborted",
3865 paramList == PL_checkav ? "CHECK"
3866 : paramList == PL_initav ? "INIT"
3868 while (PL_scopestack_ix > oldscope)
3871 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3878 /* my_exit() was called */
3879 while (PL_scopestack_ix > oldscope)
3882 PL_curstash = PL_defstash;
3883 PL_curcop = &PL_compiling;
3884 CopLINE_set(PL_curcop, oldline);
3886 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3887 if (paramList == PL_beginav)
3888 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3890 Perl_croak(aTHX_ "%s failed--call queue aborted",
3891 paramList == PL_checkav ? "CHECK"
3892 : paramList == PL_initav ? "INIT"
3899 PL_curcop = &PL_compiling;
3900 CopLINE_set(PL_curcop, oldline);
3903 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3911 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3913 S_vcall_list_body(pTHX_ va_list args)
3915 CV *cv = va_arg(args, CV*);
3916 return call_list_body(cv);
3921 S_call_list_body(pTHX_ CV *cv)
3923 PUSHMARK(PL_stack_sp);
3924 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3929 Perl_my_exit(pTHX_ U32 status)
3931 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3932 thr, (unsigned long) status));
3941 STATUS_NATIVE_SET(status);
3948 Perl_my_failure_exit(pTHX)
3951 if (vaxc$errno & 1) {
3952 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3953 STATUS_NATIVE_SET(44);
3956 if (!vaxc$errno && errno) /* unlikely */
3957 STATUS_NATIVE_SET(44);
3959 STATUS_NATIVE_SET(vaxc$errno);
3964 STATUS_POSIX_SET(errno);
3966 exitstatus = STATUS_POSIX >> 8;
3967 if (exitstatus & 255)
3968 STATUS_POSIX_SET(exitstatus);
3970 STATUS_POSIX_SET(255);
3977 S_my_exit_jump(pTHX)
3979 register PERL_CONTEXT *cx;
3984 SvREFCNT_dec(PL_e_script);
3985 PL_e_script = Nullsv;
3988 POPSTACK_TO(PL_mainstack);
3989 if (cxstack_ix >= 0) {
3992 POPBLOCK(cx,PL_curpm);
4000 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
4003 p = SvPVX(PL_e_script);
4004 nl = strchr(p, '\n');
4005 nl = (nl) ? nl+1 : SvEND(PL_e_script);
4007 filter_del(read_e_script);
4010 sv_catpvn(buf_sv, p, nl-p);
4011 sv_chop(PL_e_script, nl);