3 * Copyright (c) 1987-2000 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(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
60 # if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
71 PERL_SET_THX(my_perl); \
75 # define INIT_TLS_AND_INTERP \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
80 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
102 Zero(my_perl, 1, PerlInterpreter);
119 =for apidoc perl_alloc
121 Allocates a new Perl interpreter. See L<perlembed>.
129 PerlInterpreter *my_perl;
131 /* New() needs interpreter, so call malloc() instead */
132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
135 Zero(my_perl, 1, PerlInterpreter);
138 #endif /* PERL_IMPLICIT_SYS */
141 =for apidoc perl_construct
143 Initializes a new Perl interpreter. See L<perlembed>.
149 perl_construct(pTHXx)
154 struct perl_thread *thr = NULL;
155 #endif /* FAKE_THREADS */
156 #endif /* USE_THREADS */
160 PL_perl_destruct_level = 1;
162 if (PL_perl_destruct_level > 0)
166 /* Init the real globals (and main thread)? */
169 MUTEX_INIT(&PL_sv_mutex);
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
178 # ifdef EMULATE_ATOMIC_REFCOUNTS
179 MUTEX_INIT(&PL_svref_mutex);
180 # endif /* EMULATE_ATOMIC_REFCOUNTS */
182 MUTEX_INIT(&PL_cred_mutex);
183 MUTEX_INIT(&PL_sv_lock_mutex);
184 MUTEX_INIT(&PL_fdpid_mutex);
186 thr = init_main_thread();
187 #endif /* USE_THREADS */
189 #ifdef PERL_FLEXIBLE_EXCEPTIONS
190 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
193 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
195 PL_linestr = NEWSV(65,79);
196 sv_upgrade(PL_linestr,SVt_PVIV);
198 if (!SvREADONLY(&PL_sv_undef)) {
199 /* set read-only and try to insure than we wont see REFCNT==0
202 SvREADONLY_on(&PL_sv_undef);
203 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
205 sv_setpv(&PL_sv_no,PL_No);
207 SvREADONLY_on(&PL_sv_no);
208 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
210 sv_setpv(&PL_sv_yes,PL_Yes);
212 SvREADONLY_on(&PL_sv_yes);
213 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
218 /* PL_sighandlerp = sighandler; */
220 PL_sighandlerp = Perl_sighandler;
222 PL_pidstatus = newHV();
226 * There is no way we can refer to them from Perl so close them to save
227 * space. The other alternative would be to provide STDAUX and STDPRN
230 (void)fclose(stdaux);
231 (void)fclose(stdprn);
235 PL_nrs = newSVpvn("\n", 1);
236 PL_rs = SvREFCNT_inc(PL_nrs);
241 PL_lex_state = LEX_NOTPARSING;
247 SET_NUMERIC_STANDARD();
251 PL_patchlevel = NEWSV(0,4);
252 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
253 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
254 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
255 s = (U8*)SvPVX(PL_patchlevel);
256 s = uv_to_utf8(s, (UV)PERL_REVISION);
257 s = uv_to_utf8(s, (UV)PERL_VERSION);
258 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
264 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
265 + ((NV)PERL_SUBVERSION / (NV)1000000)
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
273 #if defined(LOCAL_PATCH_COUNT)
274 PL_localpatches = local_patches; /* For possible -v */
277 #ifdef HAVE_INTERP_INTERN
281 PerlIO_init(); /* Hook to IO system */
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
285 PL_errors = newSVpvn("",0);
291 =for apidoc perl_destruct
293 Shuts down a Perl interpreter. See L<perlembed>.
302 int destruct_level; /* 0=none, 1=full, 2=full with checks */
308 #endif /* USE_THREADS */
310 /* wait for all pseudo-forked children to finish */
311 PERL_WAIT_FOR_CHILDREN;
315 /* Pass 1 on any remaining threads: detach joinables, join zombies */
317 MUTEX_LOCK(&PL_threads_mutex);
318 DEBUG_S(PerlIO_printf(Perl_debug_log,
319 "perl_destruct: waiting for %d threads...\n",
321 for (t = thr->next; t != thr; t = t->next) {
322 MUTEX_LOCK(&t->mutex);
323 switch (ThrSTATE(t)) {
326 DEBUG_S(PerlIO_printf(Perl_debug_log,
327 "perl_destruct: joining zombie %p\n", t));
328 ThrSETSTATE(t, THRf_DEAD);
329 MUTEX_UNLOCK(&t->mutex);
332 * The SvREFCNT_dec below may take a long time (e.g. av
333 * may contain an object scalar whose destructor gets
334 * called) so we have to unlock threads_mutex and start
337 MUTEX_UNLOCK(&PL_threads_mutex);
339 SvREFCNT_dec((SV*)av);
340 DEBUG_S(PerlIO_printf(Perl_debug_log,
341 "perl_destruct: joined zombie %p OK\n", t));
343 case THRf_R_JOINABLE:
344 DEBUG_S(PerlIO_printf(Perl_debug_log,
345 "perl_destruct: detaching thread %p\n", t));
346 ThrSETSTATE(t, THRf_R_DETACHED);
348 * We unlock threads_mutex and t->mutex in the opposite order
349 * from which we locked them just so that DETACH won't
350 * deadlock if it panics. It's only a breach of good style
351 * not a bug since they are unlocks not locks.
353 MUTEX_UNLOCK(&PL_threads_mutex);
355 MUTEX_UNLOCK(&t->mutex);
358 DEBUG_S(PerlIO_printf(Perl_debug_log,
359 "perl_destruct: ignoring %p (state %u)\n",
361 MUTEX_UNLOCK(&t->mutex);
362 /* fall through and out */
365 /* We leave the above "Pass 1" loop with threads_mutex still locked */
367 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
368 while (PL_nthreads > 1)
370 DEBUG_S(PerlIO_printf(Perl_debug_log,
371 "perl_destruct: final wait for %d threads\n",
373 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
375 /* At this point, we're the last thread */
376 MUTEX_UNLOCK(&PL_threads_mutex);
377 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
378 MUTEX_DESTROY(&PL_threads_mutex);
379 COND_DESTROY(&PL_nthreads_cond);
381 #endif /* !defined(FAKE_THREADS) */
382 #endif /* USE_THREADS */
384 destruct_level = PL_perl_destruct_level;
388 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
390 if (destruct_level < i)
399 /* We must account for everything. */
401 /* Destroy the main CV and syntax tree */
403 PL_curpad = AvARRAY(PL_comppad);
404 op_free(PL_main_root);
405 PL_main_root = Nullop;
407 PL_curcop = &PL_compiling;
408 PL_main_start = Nullop;
409 SvREFCNT_dec(PL_main_cv);
413 if (PL_sv_objcount) {
415 * Try to destruct global references. We do this first so that the
416 * destructors and destructees still exist. Some sv's might remain.
417 * Non-referenced objects are on their own.
422 /* unhook hooks which will soon be, or use, destroyed data */
423 SvREFCNT_dec(PL_warnhook);
424 PL_warnhook = Nullsv;
425 SvREFCNT_dec(PL_diehook);
428 /* call exit list functions */
429 while (PL_exitlistlen-- > 0)
430 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
432 Safefree(PL_exitlist);
434 if (destruct_level == 0){
436 DEBUG_P(debprofdump());
438 /* The exit() function will do everything that needs doing. */
442 /* loosen bonds of global variables */
445 (void)PerlIO_close(PL_rsfp);
449 /* Filters for program text */
450 SvREFCNT_dec(PL_rsfp_filters);
451 PL_rsfp_filters = Nullav;
454 PL_preprocess = FALSE;
460 PL_doswitches = FALSE;
461 PL_dowarn = G_WARN_OFF;
462 PL_doextract = FALSE;
463 PL_sawampersand = FALSE; /* must save all match strings */
466 Safefree(PL_inplace);
468 SvREFCNT_dec(PL_patchlevel);
471 SvREFCNT_dec(PL_e_script);
472 PL_e_script = Nullsv;
475 /* magical thingies */
477 Safefree(PL_ofs); /* $, */
480 Safefree(PL_ors); /* $\ */
483 SvREFCNT_dec(PL_rs); /* $/ */
486 SvREFCNT_dec(PL_nrs); /* $/ helper */
489 PL_multiline = 0; /* $* */
490 Safefree(PL_osname); /* $^O */
493 SvREFCNT_dec(PL_statname);
494 PL_statname = Nullsv;
497 /* defgv, aka *_ should be taken care of elsewhere */
499 /* clean up after study() */
500 SvREFCNT_dec(PL_lastscream);
501 PL_lastscream = Nullsv;
502 Safefree(PL_screamfirst);
504 Safefree(PL_screamnext);
508 Safefree(PL_efloatbuf);
509 PL_efloatbuf = Nullch;
512 /* startup and shutdown function lists */
513 SvREFCNT_dec(PL_beginav);
514 SvREFCNT_dec(PL_endav);
515 SvREFCNT_dec(PL_checkav);
516 SvREFCNT_dec(PL_initav);
522 /* shortcuts just get cleared */
528 PL_argvoutgv = Nullgv;
530 PL_stderrgv = Nullgv;
531 PL_last_in_gv = Nullgv;
533 PL_debstash = Nullhv;
535 /* reset so print() ends up where we expect */
538 SvREFCNT_dec(PL_argvout_stack);
539 PL_argvout_stack = Nullav;
541 SvREFCNT_dec(PL_modglobal);
542 PL_modglobal = Nullhv;
543 SvREFCNT_dec(PL_preambleav);
544 PL_preambleav = Nullav;
545 SvREFCNT_dec(PL_subname);
547 SvREFCNT_dec(PL_linestr);
549 SvREFCNT_dec(PL_pidstatus);
550 PL_pidstatus = Nullhv;
551 SvREFCNT_dec(PL_toptarget);
552 PL_toptarget = Nullsv;
553 SvREFCNT_dec(PL_bodytarget);
554 PL_bodytarget = Nullsv;
555 PL_formtarget = Nullsv;
557 /* free locale stuff */
558 #ifdef USE_LOCALE_COLLATE
559 Safefree(PL_collation_name);
560 PL_collation_name = Nullch;
563 #ifdef USE_LOCALE_NUMERIC
564 Safefree(PL_numeric_name);
565 PL_numeric_name = Nullch;
568 /* clear utf8 character classes */
569 SvREFCNT_dec(PL_utf8_alnum);
570 SvREFCNT_dec(PL_utf8_alnumc);
571 SvREFCNT_dec(PL_utf8_ascii);
572 SvREFCNT_dec(PL_utf8_alpha);
573 SvREFCNT_dec(PL_utf8_space);
574 SvREFCNT_dec(PL_utf8_cntrl);
575 SvREFCNT_dec(PL_utf8_graph);
576 SvREFCNT_dec(PL_utf8_digit);
577 SvREFCNT_dec(PL_utf8_upper);
578 SvREFCNT_dec(PL_utf8_lower);
579 SvREFCNT_dec(PL_utf8_print);
580 SvREFCNT_dec(PL_utf8_punct);
581 SvREFCNT_dec(PL_utf8_xdigit);
582 SvREFCNT_dec(PL_utf8_mark);
583 SvREFCNT_dec(PL_utf8_toupper);
584 SvREFCNT_dec(PL_utf8_tolower);
585 PL_utf8_alnum = Nullsv;
586 PL_utf8_alnumc = Nullsv;
587 PL_utf8_ascii = Nullsv;
588 PL_utf8_alpha = Nullsv;
589 PL_utf8_space = Nullsv;
590 PL_utf8_cntrl = Nullsv;
591 PL_utf8_graph = Nullsv;
592 PL_utf8_digit = Nullsv;
593 PL_utf8_upper = Nullsv;
594 PL_utf8_lower = Nullsv;
595 PL_utf8_print = Nullsv;
596 PL_utf8_punct = Nullsv;
597 PL_utf8_xdigit = Nullsv;
598 PL_utf8_mark = Nullsv;
599 PL_utf8_toupper = Nullsv;
600 PL_utf8_totitle = Nullsv;
601 PL_utf8_tolower = Nullsv;
603 if (!specialWARN(PL_compiling.cop_warnings))
604 SvREFCNT_dec(PL_compiling.cop_warnings);
605 PL_compiling.cop_warnings = Nullsv;
606 if (!specialCopIO(PL_compiling.cop_io))
607 SvREFCNT_dec(PL_compiling.cop_io);
608 PL_compiling.cop_io = Nullsv;
610 Safefree(CopFILE(&PL_compiling));
611 CopFILE(&PL_compiling) = Nullch;
612 Safefree(CopSTASHPV(&PL_compiling));
614 SvREFCNT_dec(CopFILEGV(&PL_compiling));
615 CopFILEGV(&PL_compiling) = Nullgv;
616 /* cop_stash is not refcounted */
619 /* Prepare to destruct main symbol table. */
624 SvREFCNT_dec(PL_curstname);
625 PL_curstname = Nullsv;
627 /* clear queued errors */
628 SvREFCNT_dec(PL_errors);
632 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
633 if (PL_scopestack_ix != 0)
634 Perl_warner(aTHX_ WARN_INTERNAL,
635 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
636 (long)PL_scopestack_ix);
637 if (PL_savestack_ix != 0)
638 Perl_warner(aTHX_ WARN_INTERNAL,
639 "Unbalanced saves: %ld more saves than restores\n",
640 (long)PL_savestack_ix);
641 if (PL_tmps_floor != -1)
642 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
643 (long)PL_tmps_floor + 1);
644 if (cxstack_ix != -1)
645 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
646 (long)cxstack_ix + 1);
649 /* Now absolutely destruct everything, somehow or other, loops or no. */
651 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
652 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
653 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
654 last_sv_count = PL_sv_count;
657 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
658 SvFLAGS(PL_fdpid) |= SVt_PVAV;
659 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
660 SvFLAGS(PL_strtab) |= SVt_PVHV;
662 AvREAL_off(PL_fdpid); /* no surviving entries */
663 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
666 #ifdef HAVE_INTERP_INTERN
670 /* Destruct the global string table. */
672 /* Yell and reset the HeVAL() slots that are still holding refcounts,
673 * so that sv_free() won't fail on them.
681 max = HvMAX(PL_strtab);
682 array = HvARRAY(PL_strtab);
685 if (hent && ckWARN_d(WARN_INTERNAL)) {
686 Perl_warner(aTHX_ WARN_INTERNAL,
687 "Unbalanced string table refcount: (%d) for \"%s\"",
688 HeVAL(hent) - Nullsv, HeKEY(hent));
689 HeVAL(hent) = Nullsv;
699 SvREFCNT_dec(PL_strtab);
701 /* free special SVs */
703 SvREFCNT(&PL_sv_yes) = 0;
704 sv_clear(&PL_sv_yes);
705 SvANY(&PL_sv_yes) = NULL;
706 SvFLAGS(&PL_sv_yes) = 0;
708 SvREFCNT(&PL_sv_no) = 0;
710 SvANY(&PL_sv_no) = NULL;
711 SvFLAGS(&PL_sv_no) = 0;
713 SvREFCNT(&PL_sv_undef) = 0;
714 SvREADONLY_off(&PL_sv_undef);
716 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
717 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
719 Safefree(PL_origfilename);
720 Safefree(PL_reg_start_tmp);
722 Safefree(PL_reg_curpm);
723 Safefree(PL_reg_poscache);
724 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
725 Safefree(PL_op_mask);
726 Safefree(PL_psig_ptr);
727 Safefree(PL_psig_name);
729 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
731 DEBUG_P(debprofdump());
733 MUTEX_DESTROY(&PL_strtab_mutex);
734 MUTEX_DESTROY(&PL_sv_mutex);
735 MUTEX_DESTROY(&PL_eval_mutex);
736 MUTEX_DESTROY(&PL_cred_mutex);
737 MUTEX_DESTROY(&PL_fdpid_mutex);
738 COND_DESTROY(&PL_eval_cond);
739 #ifdef EMULATE_ATOMIC_REFCOUNTS
740 MUTEX_DESTROY(&PL_svref_mutex);
741 #endif /* EMULATE_ATOMIC_REFCOUNTS */
743 /* As the penultimate thing, free the non-arena SV for thrsv */
744 Safefree(SvPVX(PL_thrsv));
745 Safefree(SvANY(PL_thrsv));
748 #endif /* USE_THREADS */
752 /* As the absolutely last thing, free the non-arena SV for mess() */
755 /* it could have accumulated taint magic */
756 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
759 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
760 moremagic = mg->mg_moremagic;
761 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
762 Safefree(mg->mg_ptr);
766 /* we know that type >= SVt_PV */
767 (void)SvOOK_off(PL_mess_sv);
768 Safefree(SvPVX(PL_mess_sv));
769 Safefree(SvANY(PL_mess_sv));
770 Safefree(PL_mess_sv);
776 =for apidoc perl_free
778 Releases a Perl interpreter. See L<perlembed>.
786 #if defined(PERL_OBJECT)
789 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
790 void *host = w32_internal_host;
791 if (PerlProc_lasthost())
794 win32_delete_internal_host(host);
802 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
804 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
805 PL_exitlist[PL_exitlistlen].fn = fn;
806 PL_exitlist[PL_exitlistlen].ptr = ptr;
811 =for apidoc perl_parse
813 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
819 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
829 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
832 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
833 setuid perl scripts securely.\n");
837 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
838 _dyld_lookup_and_bind
839 ("__environ", (unsigned long *) &environ_pointer, NULL);
844 #ifdef USE_ENVIRON_ARRAY
845 PL_origenviron = environ;
850 /* Come here if running an undumped a.out. */
852 PL_origfilename = savepv(argv[0]);
853 PL_do_undump = FALSE;
854 cxstack_ix = -1; /* start label stack again */
856 init_postdump_symbols(argc,argv,env);
861 PL_curpad = AvARRAY(PL_comppad);
862 op_free(PL_main_root);
863 PL_main_root = Nullop;
865 PL_main_start = Nullop;
866 SvREFCNT_dec(PL_main_cv);
870 oldscope = PL_scopestack_ix;
871 PL_dowarn = G_WARN_OFF;
873 #ifdef PERL_FLEXIBLE_EXCEPTIONS
874 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
880 #ifndef PERL_FLEXIBLE_EXCEPTIONS
881 parse_body(env,xsinit);
884 call_list(oldscope, PL_checkav);
891 /* my_exit() was called */
892 while (PL_scopestack_ix > oldscope)
895 PL_curstash = PL_defstash;
897 call_list(oldscope, PL_checkav);
898 ret = STATUS_NATIVE_EXPORT;
901 PerlIO_printf(Perl_error_log, "panic: top_env\n");
909 #ifdef PERL_FLEXIBLE_EXCEPTIONS
911 S_vparse_body(pTHX_ va_list args)
913 char **env = va_arg(args, char**);
914 XSINIT_t xsinit = va_arg(args, XSINIT_t);
916 return parse_body(env, xsinit);
921 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
924 int argc = PL_origargc;
925 char **argv = PL_origargv;
926 char *scriptname = NULL;
928 VOL bool dosearch = FALSE;
933 char *cddir = Nullch;
935 sv_setpvn(PL_linestr,"",0);
936 sv = newSVpvn("",0); /* first used for -I flags */
940 for (argc--,argv++; argc > 0; argc--,argv++) {
941 if (argv[0][0] != '-' || !argv[0][1])
945 validarg = " PHOOEY ";
954 win32_argv2utf8(argc-1, argv+1);
957 #ifndef PERL_STRICT_CR
981 if ((s = moreswitches(s)))
991 #ifdef MACOS_TRADITIONAL
992 /* ignore -e for Dev:Pseudo argument */
993 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
996 if (PL_euid != PL_uid || PL_egid != PL_gid)
997 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
999 PL_e_script = newSVpvn("",0);
1000 filter_add(read_e_script, NULL);
1003 sv_catpv(PL_e_script, s);
1005 sv_catpv(PL_e_script, argv[1]);
1009 Perl_croak(aTHX_ "No code specified for -e");
1010 sv_catpv(PL_e_script, "\n");
1013 case 'I': /* -I handled both here and in moreswitches() */
1015 if (!*++s && (s=argv[1]) != Nullch) {
1020 STRLEN len = strlen(s);
1021 p = savepvn(s, len);
1022 incpush(p, TRUE, TRUE);
1023 sv_catpvn(sv, "-I", 2);
1024 sv_catpvn(sv, p, len);
1025 sv_catpvn(sv, " ", 1);
1029 Perl_croak(aTHX_ "No directory specified for -I");
1033 PL_preprocess = TRUE;
1043 PL_preambleav = newAV();
1044 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1046 PL_Sv = newSVpv("print myconfig();",0);
1048 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1050 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1052 sv_catpv(PL_Sv,"\" Compile-time options:");
1054 sv_catpv(PL_Sv," DEBUGGING");
1056 # ifdef MULTIPLICITY
1057 sv_catpv(PL_Sv," MULTIPLICITY");
1060 sv_catpv(PL_Sv," USE_THREADS");
1062 # ifdef USE_ITHREADS
1063 sv_catpv(PL_Sv," USE_ITHREADS");
1065 # ifdef USE_64_BIT_INT
1066 sv_catpv(PL_Sv," USE_64_BIT_INT");
1068 # ifdef USE_64_BIT_ALL
1069 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1071 # ifdef USE_LONG_DOUBLE
1072 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1074 # ifdef USE_LARGE_FILES
1075 sv_catpv(PL_Sv," USE_LARGE_FILES");
1078 sv_catpv(PL_Sv," USE_SOCKS");
1081 sv_catpv(PL_Sv," PERL_OBJECT");
1083 # ifdef PERL_IMPLICIT_CONTEXT
1084 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1086 # ifdef PERL_IMPLICIT_SYS
1087 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1089 sv_catpv(PL_Sv,"\\n\",");
1091 #if defined(LOCAL_PATCH_COUNT)
1092 if (LOCAL_PATCH_COUNT > 0) {
1094 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1095 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1096 if (PL_localpatches[i])
1097 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1101 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1104 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1106 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1109 sv_catpv(PL_Sv, "; \
1111 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1112 print \" \\%ENV:\\n @env\\n\" if @env; \
1113 print \" \\@INC:\\n @INC\\n\";");
1116 PL_Sv = newSVpv("config_vars(qw(",0);
1117 sv_catpv(PL_Sv, ++s);
1118 sv_catpv(PL_Sv, "))");
1121 av_push(PL_preambleav, PL_Sv);
1122 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1125 PL_doextract = TRUE;
1133 if (!*++s || isSPACE(*s)) {
1137 /* catch use of gnu style long options */
1138 if (strEQ(s, "version")) {
1142 if (strEQ(s, "help")) {
1149 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1155 #ifndef SECURE_INTERNAL_GETENV
1158 (s = PerlEnv_getenv("PERL5OPT")))
1162 if (*s == '-' && *(s+1) == 'T')
1175 if (!strchr("DIMUdmw", *s))
1176 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1177 s = moreswitches(s);
1183 scriptname = argv[0];
1186 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1188 else if (scriptname == Nullch) {
1190 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1198 open_script(scriptname,dosearch,sv,&fdscript);
1200 validate_suid(validarg, scriptname,fdscript);
1203 #if defined(SIGCHLD) || defined(SIGCLD)
1206 # define SIGCHLD SIGCLD
1208 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1209 if (sigstate == SIG_IGN) {
1210 if (ckWARN(WARN_SIGNAL))
1211 Perl_warner(aTHX_ WARN_SIGNAL,
1212 "Can't ignore signal CHLD, forcing to default");
1213 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1219 #ifdef MACOS_TRADITIONAL
1220 if (PL_doextract || gMacPerl_AlwaysExtract) {
1225 if (cddir && PerlDir_chdir(cddir) < 0)
1226 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1230 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1231 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1232 CvUNIQUE_on(PL_compcv);
1234 PL_comppad = newAV();
1235 av_push(PL_comppad, Nullsv);
1236 PL_curpad = AvARRAY(PL_comppad);
1237 PL_comppad_name = newAV();
1238 PL_comppad_name_fill = 0;
1239 PL_min_intro_pending = 0;
1242 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1243 PL_curpad[0] = (SV*)newAV();
1244 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1245 CvOWNER(PL_compcv) = 0;
1246 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1247 MUTEX_INIT(CvMUTEXP(PL_compcv));
1248 #endif /* USE_THREADS */
1250 comppadlist = newAV();
1251 AvREAL_off(comppadlist);
1252 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1253 av_store(comppadlist, 1, (SV*)PL_comppad);
1254 CvPADLIST(PL_compcv) = comppadlist;
1256 boot_core_UNIVERSAL();
1258 boot_core_xsutils();
1262 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1264 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1270 # ifdef HAS_SOCKS5_INIT
1271 socks5_init(argv[0]);
1277 init_predump_symbols();
1278 /* init_postdump_symbols not currently designed to be called */
1279 /* more than once (ENV isn't cleared first, for example) */
1280 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1282 init_postdump_symbols(argc,argv,env);
1286 /* now parse the script */
1288 SETERRNO(0,SS$_NORMAL);
1290 #ifdef MACOS_TRADITIONAL
1291 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1293 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1295 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1296 MacPerl_MPWFileName(PL_origfilename));
1300 if (yyparse() || PL_error_count) {
1302 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1304 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1309 CopLINE_set(PL_curcop, 0);
1310 PL_curstash = PL_defstash;
1311 PL_preprocess = FALSE;
1313 SvREFCNT_dec(PL_e_script);
1314 PL_e_script = Nullsv;
1317 /* now that script is parsed, we can modify record separator */
1318 SvREFCNT_dec(PL_rs);
1319 PL_rs = SvREFCNT_inc(PL_nrs);
1320 sv_setsv(get_sv("/", TRUE), PL_rs);
1325 SAVECOPFILE(PL_curcop);
1326 SAVECOPLINE(PL_curcop);
1327 gv_check(PL_defstash);
1334 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1335 dump_mstats("after compilation:");
1344 =for apidoc perl_run
1346 Tells a Perl interpreter to run. See L<perlembed>.
1362 oldscope = PL_scopestack_ix;
1364 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1366 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1372 cxstack_ix = -1; /* start context stack again */
1374 case 0: /* normal completion */
1375 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1380 case 2: /* my_exit() */
1381 while (PL_scopestack_ix > oldscope)
1384 PL_curstash = PL_defstash;
1385 if (PL_endav && !PL_minus_c)
1386 call_list(oldscope, PL_endav);
1388 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1389 dump_mstats("after execution: ");
1391 ret = STATUS_NATIVE_EXPORT;
1395 POPSTACK_TO(PL_mainstack);
1398 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1408 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1410 S_vrun_body(pTHX_ va_list args)
1412 I32 oldscope = va_arg(args, I32);
1414 return run_body(oldscope);
1420 S_run_body(pTHX_ I32 oldscope)
1424 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1425 PL_sawampersand ? "Enabling" : "Omitting"));
1427 if (!PL_restartop) {
1428 DEBUG_x(dump_all());
1429 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1430 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1434 #ifdef MACOS_TRADITIONAL
1435 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1437 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1441 if (PERLDB_SINGLE && PL_DBsingle)
1442 sv_setiv(PL_DBsingle, 1);
1444 call_list(oldscope, PL_initav);
1450 PL_op = PL_restartop;
1454 else if (PL_main_start) {
1455 CvDEPTH(PL_main_cv) = 1;
1456 PL_op = PL_main_start;
1466 =for apidoc p||get_sv
1468 Returns the SV of the specified Perl scalar. If C<create> is set and the
1469 Perl variable does not exist then it will be created. If C<create> is not
1470 set and the variable does not exist then NULL is returned.
1476 Perl_get_sv(pTHX_ const char *name, I32 create)
1480 if (name[1] == '\0' && !isALPHA(name[0])) {
1481 PADOFFSET tmp = find_threadsv(name);
1482 if (tmp != NOT_IN_PAD) {
1484 return THREADSV(tmp);
1487 #endif /* USE_THREADS */
1488 gv = gv_fetchpv(name, create, SVt_PV);
1495 =for apidoc p||get_av
1497 Returns the AV of the specified Perl array. If C<create> is set and the
1498 Perl variable does not exist then it will be created. If C<create> is not
1499 set and the variable does not exist then NULL is returned.
1505 Perl_get_av(pTHX_ const char *name, I32 create)
1507 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1516 =for apidoc p||get_hv
1518 Returns the HV of the specified Perl hash. If C<create> is set and the
1519 Perl variable does not exist then it will be created. If C<create> is not
1520 set and the variable does not exist then NULL is returned.
1526 Perl_get_hv(pTHX_ const char *name, I32 create)
1528 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1537 =for apidoc p||get_cv
1539 Returns the CV of the specified Perl subroutine. If C<create> is set and
1540 the Perl subroutine does not exist then it will be declared (which has the
1541 same effect as saying C<sub name;>). If C<create> is not set and the
1542 subroutine does not exist then NULL is returned.
1548 Perl_get_cv(pTHX_ const char *name, I32 create)
1550 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1551 /* XXX unsafe for threads if eval_owner isn't held */
1552 /* XXX this is probably not what they think they're getting.
1553 * It has the same effect as "sub name;", i.e. just a forward
1555 if (create && !GvCVu(gv))
1556 return newSUB(start_subparse(FALSE, 0),
1557 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1565 /* Be sure to refetch the stack pointer after calling these routines. */
1568 =for apidoc p||call_argv
1570 Performs a callback to the specified Perl sub. See L<perlcall>.
1576 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1578 /* See G_* flags in cop.h */
1579 /* null terminated arg list */
1586 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1591 return call_pv(sub_name, flags);
1595 =for apidoc p||call_pv
1597 Performs a callback to the specified Perl sub. See L<perlcall>.
1603 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1604 /* name of the subroutine */
1605 /* See G_* flags in cop.h */
1607 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1611 =for apidoc p||call_method
1613 Performs a callback to the specified Perl method. The blessed object must
1614 be on the stack. See L<perlcall>.
1620 Perl_call_method(pTHX_ const char *methname, I32 flags)
1621 /* name of the subroutine */
1622 /* See G_* flags in cop.h */
1624 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1627 /* May be called with any of a CV, a GV, or an SV containing the name. */
1629 =for apidoc p||call_sv
1631 Performs a callback to the Perl sub whose name is in the SV. See
1638 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1639 /* See G_* flags in cop.h */
1642 LOGOP myop; /* fake syntax tree node */
1647 bool oldcatch = CATCH_GET;
1652 if (flags & G_DISCARD) {
1657 Zero(&myop, 1, LOGOP);
1658 myop.op_next = Nullop;
1659 if (!(flags & G_NOARGS))
1660 myop.op_flags |= OPf_STACKED;
1661 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1662 (flags & G_ARRAY) ? OPf_WANT_LIST :
1667 EXTEND(PL_stack_sp, 1);
1668 *++PL_stack_sp = sv;
1670 oldscope = PL_scopestack_ix;
1672 if (PERLDB_SUB && PL_curstash != PL_debstash
1673 /* Handle first BEGIN of -d. */
1674 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1675 /* Try harder, since this may have been a sighandler, thus
1676 * curstash may be meaningless. */
1677 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1678 && !(flags & G_NODEBUG))
1679 PL_op->op_private |= OPpENTERSUB_DB;
1681 if (flags & G_METHOD) {
1682 Zero(&method_op, 1, UNOP);
1683 method_op.op_next = PL_op;
1684 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1685 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1686 PL_op = (OP*)&method_op;
1689 if (!(flags & G_EVAL)) {
1691 call_body((OP*)&myop, FALSE);
1692 retval = PL_stack_sp - (PL_stack_base + oldmark);
1693 CATCH_SET(oldcatch);
1696 myop.op_other = (OP*)&myop;
1698 /* we're trying to emulate pp_entertry() here */
1700 register PERL_CONTEXT *cx;
1701 I32 gimme = GIMME_V;
1706 push_return(Nullop);
1707 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1709 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1711 PL_in_eval = EVAL_INEVAL;
1712 if (flags & G_KEEPERR)
1713 PL_in_eval |= EVAL_KEEPERR;
1719 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1721 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1728 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1730 call_body((OP*)&myop, FALSE);
1732 retval = PL_stack_sp - (PL_stack_base + oldmark);
1733 if (!(flags & G_KEEPERR))
1740 /* my_exit() was called */
1741 PL_curstash = PL_defstash;
1744 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1745 Perl_croak(aTHX_ "Callback called exit");
1750 PL_op = PL_restartop;
1754 PL_stack_sp = PL_stack_base + oldmark;
1755 if (flags & G_ARRAY)
1759 *++PL_stack_sp = &PL_sv_undef;
1764 if (PL_scopestack_ix > oldscope) {
1768 register PERL_CONTEXT *cx;
1780 if (flags & G_DISCARD) {
1781 PL_stack_sp = PL_stack_base + oldmark;
1790 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1792 S_vcall_body(pTHX_ va_list args)
1794 OP *myop = va_arg(args, OP*);
1795 int is_eval = va_arg(args, int);
1797 call_body(myop, is_eval);
1803 S_call_body(pTHX_ OP *myop, int is_eval)
1807 if (PL_op == myop) {
1809 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1811 PL_op = Perl_pp_entersub(aTHX); /* this does */
1817 /* Eval a string. The G_EVAL flag is always assumed. */
1820 =for apidoc p||eval_sv
1822 Tells Perl to C<eval> the string in the SV.
1828 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1830 /* See G_* flags in cop.h */
1833 UNOP myop; /* fake syntax tree node */
1834 I32 oldmark = SP - PL_stack_base;
1841 if (flags & G_DISCARD) {
1848 Zero(PL_op, 1, UNOP);
1849 EXTEND(PL_stack_sp, 1);
1850 *++PL_stack_sp = sv;
1851 oldscope = PL_scopestack_ix;
1853 if (!(flags & G_NOARGS))
1854 myop.op_flags = OPf_STACKED;
1855 myop.op_next = Nullop;
1856 myop.op_type = OP_ENTEREVAL;
1857 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1858 (flags & G_ARRAY) ? OPf_WANT_LIST :
1860 if (flags & G_KEEPERR)
1861 myop.op_flags |= OPf_SPECIAL;
1863 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1865 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1872 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1874 call_body((OP*)&myop,TRUE);
1876 retval = PL_stack_sp - (PL_stack_base + oldmark);
1877 if (!(flags & G_KEEPERR))
1884 /* my_exit() was called */
1885 PL_curstash = PL_defstash;
1888 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1889 Perl_croak(aTHX_ "Callback called exit");
1894 PL_op = PL_restartop;
1898 PL_stack_sp = PL_stack_base + oldmark;
1899 if (flags & G_ARRAY)
1903 *++PL_stack_sp = &PL_sv_undef;
1909 if (flags & G_DISCARD) {
1910 PL_stack_sp = PL_stack_base + oldmark;
1920 =for apidoc p||eval_pv
1922 Tells Perl to C<eval> the given string and return an SV* result.
1928 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1931 SV* sv = newSVpv(p, 0);
1933 eval_sv(sv, G_SCALAR);
1940 if (croak_on_error && SvTRUE(ERRSV)) {
1942 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1948 /* Require a module. */
1951 =for apidoc p||require_pv
1953 Tells Perl to C<require> a module.
1959 Perl_require_pv(pTHX_ const char *pv)
1963 PUSHSTACKi(PERLSI_REQUIRE);
1965 sv = sv_newmortal();
1966 sv_setpv(sv, "require '");
1969 eval_sv(sv, G_DISCARD);
1975 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1979 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1980 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1984 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1986 /* This message really ought to be max 23 lines.
1987 * Removed -h because the user already knows that opton. Others? */
1989 static char *usage_msg[] = {
1990 "-0[octal] specify record separator (\\0, if no argument)",
1991 "-a autosplit mode with -n or -p (splits $_ into @F)",
1992 "-C enable native wide character system interfaces",
1993 "-c check syntax only (runs BEGIN and CHECK blocks)",
1994 "-d[:debugger] run program under debugger",
1995 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1996 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1997 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1998 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1999 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2000 "-l[octal] enable line ending processing, specifies line terminator",
2001 "-[mM][-]module execute `use/no module...' before executing program",
2002 "-n assume 'while (<>) { ... }' loop around program",
2003 "-p assume loop like -n but print line also, like sed",
2004 "-P run program through C preprocessor before compilation",
2005 "-s enable rudimentary parsing for switches after programfile",
2006 "-S look for programfile using PATH environment variable",
2007 "-T enable tainting checks",
2008 "-u dump core after parsing program",
2009 "-U allow unsafe operations",
2010 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2011 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2012 "-w enable many useful warnings (RECOMMENDED)",
2013 "-W enable all warnings",
2014 "-X disable all warnings",
2015 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2019 char **p = usage_msg;
2021 PerlIO_printf(PerlIO_stdout(),
2022 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2025 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2028 /* This routine handles any switches that can be given during run */
2031 Perl_moreswitches(pTHX_ char *s)
2040 numlen = 0; /* disallow underscores */
2041 rschar = (U32)scan_oct(s, 4, &numlen);
2042 SvREFCNT_dec(PL_nrs);
2043 if (rschar & ~((U8)~0))
2044 PL_nrs = &PL_sv_undef;
2045 else if (!rschar && numlen >= 2)
2046 PL_nrs = newSVpvn("", 0);
2049 PL_nrs = newSVpvn(&ch, 1);
2054 PL_widesyscalls = TRUE;
2059 PL_splitstr = savepv(s + 1);
2073 /* The following permits -d:Mod to accepts arguments following an =
2074 in the fashion that -MSome::Mod does. */
2075 if (*s == ':' || *s == '=') {
2078 sv = newSVpv("use Devel::", 0);
2080 /* We now allow -d:Module=Foo,Bar */
2081 while(isALNUM(*s) || *s==':') ++s;
2083 sv_catpv(sv, start);
2085 sv_catpvn(sv, start, s-start);
2086 sv_catpv(sv, " split(/,/,q{");
2091 my_setenv("PERL5DB", SvPV(sv, PL_na));
2094 PL_perldb = PERLDB_ALL;
2102 if (isALPHA(s[1])) {
2103 static char debopts[] = "psltocPmfrxuLHXDST";
2106 for (s++; *s && (d = strchr(debopts,*s)); s++)
2107 PL_debug |= 1 << (d - debopts);
2110 PL_debug = atoi(s+1);
2111 for (s++; isDIGIT(*s); s++) ;
2113 PL_debug |= 0x80000000;
2116 if (ckWARN_d(WARN_DEBUGGING))
2117 Perl_warner(aTHX_ WARN_DEBUGGING,
2118 "Recompile perl with -DDEBUGGING to use -D switch\n");
2119 for (s++; isALNUM(*s); s++) ;
2125 usage(PL_origargv[0]);
2129 Safefree(PL_inplace);
2130 PL_inplace = savepv(s+1);
2132 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2135 if (*s == '-') /* Additional switches on #! line. */
2139 case 'I': /* -I handled both here and in parse_perl() */
2142 while (*s && isSPACE(*s))
2147 /* ignore trailing spaces (possibly followed by other switches) */
2149 for (e = p; *e && !isSPACE(*e); e++) ;
2153 } while (*p && *p != '-');
2154 e = savepvn(s, e-s);
2155 incpush(e, TRUE, TRUE);
2162 Perl_croak(aTHX_ "No directory specified for -I");
2170 PL_ors = savepv("\n");
2172 numlen = 0; /* disallow underscores */
2173 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2178 if (RsPARA(PL_nrs)) {
2183 PL_ors = SvPV(PL_nrs, PL_orslen);
2184 PL_ors = savepvn(PL_ors, PL_orslen);
2188 forbid_setid("-M"); /* XXX ? */
2191 forbid_setid("-m"); /* XXX ? */
2196 /* -M-foo == 'no foo' */
2197 if (*s == '-') { use = "no "; ++s; }
2198 sv = newSVpv(use,0);
2200 /* We allow -M'Module qw(Foo Bar)' */
2201 while(isALNUM(*s) || *s==':') ++s;
2203 sv_catpv(sv, start);
2204 if (*(start-1) == 'm') {
2206 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2207 sv_catpv( sv, " ()");
2211 Perl_croak(aTHX_ "Module name required with -%c option",
2213 sv_catpvn(sv, start, s-start);
2214 sv_catpv(sv, " split(/,/,q{");
2220 PL_preambleav = newAV();
2221 av_push(PL_preambleav, sv);
2224 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2236 PL_doswitches = TRUE;
2241 Perl_croak(aTHX_ "Too late for \"-T\" option");
2245 #ifdef MACOS_TRADITIONAL
2246 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2248 PL_do_undump = TRUE;
2256 PerlIO_printf(PerlIO_stdout(),
2257 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2258 PL_patchlevel, ARCHNAME));
2259 #if defined(LOCAL_PATCH_COUNT)
2260 if (LOCAL_PATCH_COUNT > 0)
2261 PerlIO_printf(PerlIO_stdout(),
2262 "\n(with %d registered patch%s, "
2263 "see perl -V for more detail)",
2264 (int)LOCAL_PATCH_COUNT,
2265 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2268 PerlIO_printf(PerlIO_stdout(),
2269 "\n\nCopyright 1987-2000, Larry Wall\n");
2270 #ifdef MACOS_TRADITIONAL
2271 PerlIO_printf(PerlIO_stdout(),
2272 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2275 PerlIO_printf(PerlIO_stdout(),
2276 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2279 PerlIO_printf(PerlIO_stdout(),
2280 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2281 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2284 PerlIO_printf(PerlIO_stdout(),
2285 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2286 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2289 PerlIO_printf(PerlIO_stdout(),
2290 "atariST series port, ++jrb bammi@cadence.com\n");
2293 PerlIO_printf(PerlIO_stdout(),
2294 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2297 PerlIO_printf(PerlIO_stdout(),
2298 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2301 PerlIO_printf(PerlIO_stdout(),
2302 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2305 PerlIO_printf(PerlIO_stdout(),
2306 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2309 PerlIO_printf(PerlIO_stdout(),
2310 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2313 PerlIO_printf(PerlIO_stdout(),
2314 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2317 PerlIO_printf(PerlIO_stdout(),
2318 "MiNT port by Guido Flohr, 1997-1999\n");
2321 PerlIO_printf(PerlIO_stdout(),
2322 "EPOC port by Olaf Flebbe, 1999-2000\n");
2324 #ifdef BINARY_BUILD_NOTICE
2325 BINARY_BUILD_NOTICE;
2327 PerlIO_printf(PerlIO_stdout(),
2329 Perl may be copied only under the terms of either the Artistic License or the\n\
2330 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2331 Complete documentation for Perl, including FAQ lists, should be found on\n\
2332 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2333 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2336 if (! (PL_dowarn & G_WARN_ALL_MASK))
2337 PL_dowarn |= G_WARN_ON;
2341 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2342 PL_compiling.cop_warnings = pWARN_ALL ;
2346 PL_dowarn = G_WARN_ALL_OFF;
2347 PL_compiling.cop_warnings = pWARN_NONE ;
2352 if (s[1] == '-') /* Additional switches on #! line. */
2357 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2363 #ifdef ALTERNATE_SHEBANG
2364 case 'S': /* OS/2 needs -S on "extproc" line. */
2372 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2377 /* compliments of Tom Christiansen */
2379 /* unexec() can be found in the Gnu emacs distribution */
2380 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2383 Perl_my_unexec(pTHX)
2391 prog = newSVpv(BIN_EXP, 0);
2392 sv_catpv(prog, "/perl");
2393 file = newSVpv(PL_origfilename, 0);
2394 sv_catpv(file, ".perldump");
2396 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2397 /* unexec prints msg to stderr in case of failure */
2398 PerlProc_exit(status);
2401 # include <lib$routines.h>
2402 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2404 ABORT(); /* for use with undump */
2409 /* initialize curinterp */
2414 #ifdef PERL_OBJECT /* XXX kludge */
2417 PL_chopset = " \n-"; \
2418 PL_copline = NOLINE; \
2419 PL_curcop = &PL_compiling;\
2420 PL_curcopdb = NULL; \
2422 PL_dumpindent = 4; \
2423 PL_laststatval = -1; \
2424 PL_laststype = OP_STAT; \
2425 PL_maxscream = -1; \
2426 PL_maxsysfd = MAXSYSFD; \
2427 PL_statname = Nullsv; \
2428 PL_tmps_floor = -1; \
2430 PL_op_mask = NULL; \
2431 PL_laststatval = -1; \
2432 PL_laststype = OP_STAT; \
2433 PL_mess_sv = Nullsv; \
2434 PL_splitstr = " "; \
2435 PL_generation = 100; \
2436 PL_exitlist = NULL; \
2437 PL_exitlistlen = 0; \
2439 PL_in_clean_objs = FALSE; \
2440 PL_in_clean_all = FALSE; \
2441 PL_profiledata = NULL; \
2443 PL_rsfp_filters = Nullav; \
2448 # ifdef MULTIPLICITY
2449 # define PERLVAR(var,type)
2450 # define PERLVARA(var,n,type)
2451 # if defined(PERL_IMPLICIT_CONTEXT)
2452 # if defined(USE_THREADS)
2453 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2454 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2455 # else /* !USE_THREADS */
2456 # define PERLVARI(var,type,init) aTHX->var = init;
2457 # define PERLVARIC(var,type,init) aTHX->var = init;
2458 # endif /* USE_THREADS */
2460 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2461 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2463 # include "intrpvar.h"
2464 # ifndef USE_THREADS
2465 # include "thrdvar.h"
2472 # define PERLVAR(var,type)
2473 # define PERLVARA(var,n,type)
2474 # define PERLVARI(var,type,init) PL_##var = init;
2475 # define PERLVARIC(var,type,init) PL_##var = init;
2476 # include "intrpvar.h"
2477 # ifndef USE_THREADS
2478 # include "thrdvar.h"
2490 S_init_main_stash(pTHX)
2495 /* Note that strtab is a rather special HV. Assumptions are made
2496 about not iterating on it, and not adding tie magic to it.
2497 It is properly deallocated in perl_destruct() */
2498 PL_strtab = newHV();
2500 MUTEX_INIT(&PL_strtab_mutex);
2502 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2503 hv_ksplit(PL_strtab, 512);
2505 PL_curstash = PL_defstash = newHV();
2506 PL_curstname = newSVpvn("main",4);
2507 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2508 SvREFCNT_dec(GvHV(gv));
2509 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2511 HvNAME(PL_defstash) = savepv("main");
2512 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2513 GvMULTI_on(PL_incgv);
2514 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2515 GvMULTI_on(PL_hintgv);
2516 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2517 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2518 GvMULTI_on(PL_errgv);
2519 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2520 GvMULTI_on(PL_replgv);
2521 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2522 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2523 sv_setpvn(ERRSV, "", 0);
2524 PL_curstash = PL_defstash;
2525 CopSTASH_set(&PL_compiling, PL_defstash);
2526 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2527 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2528 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2529 /* We must init $/ before switches are processed. */
2530 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2534 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2541 PL_origfilename = savepv("-e");
2544 /* if find_script() returns, it returns a malloc()-ed value */
2545 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2547 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2548 char *s = scriptname + 8;
2549 *fdscript = atoi(s);
2553 scriptname = savepv(s + 1);
2554 Safefree(PL_origfilename);
2555 PL_origfilename = scriptname;
2561 Safefree(CopFILE(PL_curcop));
2563 SvREFCNT_dec(CopFILEGV(PL_curcop));
2565 CopFILE_set(PL_curcop, PL_origfilename);
2566 if (strEQ(PL_origfilename,"-"))
2568 if (*fdscript >= 0) {
2569 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2570 #if defined(HAS_FCNTL) && defined(F_SETFD)
2572 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2575 else if (PL_preprocess) {
2576 char *cpp_cfg = CPPSTDIN;
2577 SV *cpp = newSVpvn("",0);
2578 SV *cmd = NEWSV(0,0);
2580 if (strEQ(cpp_cfg, "cppstdin"))
2581 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2582 sv_catpv(cpp, cpp_cfg);
2584 sv_catpvn(sv, "-I", 2);
2585 sv_catpv(sv,PRIVLIB_EXP);
2587 #if defined(MSDOS) || defined(WIN32)
2588 Perl_sv_setpvf(aTHX_ cmd, "\
2589 sed %s -e \"/^[^#]/b\" \
2590 -e \"/^#[ ]*include[ ]/b\" \
2591 -e \"/^#[ ]*define[ ]/b\" \
2592 -e \"/^#[ ]*if[ ]/b\" \
2593 -e \"/^#[ ]*ifdef[ ]/b\" \
2594 -e \"/^#[ ]*ifndef[ ]/b\" \
2595 -e \"/^#[ ]*else/b\" \
2596 -e \"/^#[ ]*elif[ ]/b\" \
2597 -e \"/^#[ ]*undef[ ]/b\" \
2598 -e \"/^#[ ]*endif/b\" \
2600 %s | %"SVf" -C %"SVf" %s",
2601 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2604 Perl_sv_setpvf(aTHX_ cmd, "\
2605 %s %s -e '/^[^#]/b' \
2606 -e '/^#[ ]*include[ ]/b' \
2607 -e '/^#[ ]*define[ ]/b' \
2608 -e '/^#[ ]*if[ ]/b' \
2609 -e '/^#[ ]*ifdef[ ]/b' \
2610 -e '/^#[ ]*ifndef[ ]/b' \
2611 -e '/^#[ ]*else/b' \
2612 -e '/^#[ ]*elif[ ]/b' \
2613 -e '/^#[ ]*undef[ ]/b' \
2614 -e '/^#[ ]*endif/b' \
2616 %s | %"SVf" %"SVf" %s",
2618 Perl_sv_setpvf(aTHX_ cmd, "\
2619 %s %s -e '/^[^#]/b' \
2620 -e '/^#[ ]*include[ ]/b' \
2621 -e '/^#[ ]*define[ ]/b' \
2622 -e '/^#[ ]*if[ ]/b' \
2623 -e '/^#[ ]*ifdef[ ]/b' \
2624 -e '/^#[ ]*ifndef[ ]/b' \
2625 -e '/^#[ ]*else/b' \
2626 -e '/^#[ ]*elif[ ]/b' \
2627 -e '/^#[ ]*undef[ ]/b' \
2628 -e '/^#[ ]*endif/b' \
2630 %s | %"SVf" -C %"SVf" %s",
2637 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2639 scriptname, cpp, sv, CPPMINUS);
2640 PL_doextract = FALSE;
2641 #ifdef IAMSUID /* actually, this is caught earlier */
2642 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2644 (void)seteuid(PL_uid); /* musn't stay setuid root */
2647 (void)setreuid((Uid_t)-1, PL_uid);
2649 #ifdef HAS_SETRESUID
2650 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2652 PerlProc_setuid(PL_uid);
2656 if (PerlProc_geteuid() != PL_uid)
2657 Perl_croak(aTHX_ "Can't do seteuid!\n");
2659 #endif /* IAMSUID */
2660 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2664 else if (!*scriptname) {
2665 forbid_setid("program input from stdin");
2666 PL_rsfp = PerlIO_stdin();
2669 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2670 #if defined(HAS_FCNTL) && defined(F_SETFD)
2672 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2677 #ifndef IAMSUID /* in case script is not readable before setuid */
2679 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2680 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2683 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2684 (int)PERL_REVISION, (int)PERL_VERSION,
2685 (int)PERL_SUBVERSION), PL_origargv);
2686 Perl_croak(aTHX_ "Can't do setuid\n");
2690 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2691 CopFILE(PL_curcop), Strerror(errno));
2696 * I_SYSSTATVFS HAS_FSTATVFS
2698 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2699 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2700 * here so that metaconfig picks them up. */
2704 S_fd_on_nosuid_fs(pTHX_ int fd)
2706 int check_okay = 0; /* able to do all the required sys/libcalls */
2707 int on_nosuid = 0; /* the fd is on a nosuid fs */
2709 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2710 * fstatvfs() is UNIX98.
2711 * fstatfs() is 4.3 BSD.
2712 * ustat()+getmnt() is pre-4.3 BSD.
2713 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2714 * an irrelevant filesystem while trying to reach the right one.
2717 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2719 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2720 defined(HAS_FSTATVFS)
2721 # define FD_ON_NOSUID_CHECK_OKAY
2722 struct statvfs stfs;
2724 check_okay = fstatvfs(fd, &stfs) == 0;
2725 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2726 # endif /* fstatvfs */
2728 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2729 defined(PERL_MOUNT_NOSUID) && \
2730 defined(HAS_FSTATFS) && \
2731 defined(HAS_STRUCT_STATFS) && \
2732 defined(HAS_STRUCT_STATFS_F_FLAGS)
2733 # define FD_ON_NOSUID_CHECK_OKAY
2736 check_okay = fstatfs(fd, &stfs) == 0;
2737 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2738 # endif /* fstatfs */
2740 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2741 defined(PERL_MOUNT_NOSUID) && \
2742 defined(HAS_FSTAT) && \
2743 defined(HAS_USTAT) && \
2744 defined(HAS_GETMNT) && \
2745 defined(HAS_STRUCT_FS_DATA) && \
2747 # define FD_ON_NOSUID_CHECK_OKAY
2750 if (fstat(fd, &fdst) == 0) {
2752 if (ustat(fdst.st_dev, &us) == 0) {
2754 /* NOSTAT_ONE here because we're not examining fields which
2755 * vary between that case and STAT_ONE. */
2756 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2757 size_t cmplen = sizeof(us.f_fname);
2758 if (sizeof(fsd.fd_req.path) < cmplen)
2759 cmplen = sizeof(fsd.fd_req.path);
2760 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2761 fdst.st_dev == fsd.fd_req.dev) {
2763 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2769 # endif /* fstat+ustat+getmnt */
2771 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2772 defined(HAS_GETMNTENT) && \
2773 defined(HAS_HASMNTOPT) && \
2774 defined(MNTOPT_NOSUID)
2775 # define FD_ON_NOSUID_CHECK_OKAY
2776 FILE *mtab = fopen("/etc/mtab", "r");
2777 struct mntent *entry;
2778 struct stat stb, fsb;
2780 if (mtab && (fstat(fd, &stb) == 0)) {
2781 while (entry = getmntent(mtab)) {
2782 if (stat(entry->mnt_dir, &fsb) == 0
2783 && fsb.st_dev == stb.st_dev)
2785 /* found the filesystem */
2787 if (hasmntopt(entry, MNTOPT_NOSUID))
2790 } /* A single fs may well fail its stat(). */
2795 # endif /* getmntent+hasmntopt */
2798 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2801 #endif /* IAMSUID */
2804 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2810 /* do we need to emulate setuid on scripts? */
2812 /* This code is for those BSD systems that have setuid #! scripts disabled
2813 * in the kernel because of a security problem. Merely defining DOSUID
2814 * in perl will not fix that problem, but if you have disabled setuid
2815 * scripts in the kernel, this will attempt to emulate setuid and setgid
2816 * on scripts that have those now-otherwise-useless bits set. The setuid
2817 * root version must be called suidperl or sperlN.NNN. If regular perl
2818 * discovers that it has opened a setuid script, it calls suidperl with
2819 * the same argv that it had. If suidperl finds that the script it has
2820 * just opened is NOT setuid root, it sets the effective uid back to the
2821 * uid. We don't just make perl setuid root because that loses the
2822 * effective uid we had before invoking perl, if it was different from the
2825 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2826 * be defined in suidperl only. suidperl must be setuid root. The
2827 * Configure script will set this up for you if you want it.
2834 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2835 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2836 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2841 #ifndef HAS_SETREUID
2842 /* On this access check to make sure the directories are readable,
2843 * there is actually a small window that the user could use to make
2844 * filename point to an accessible directory. So there is a faint
2845 * chance that someone could execute a setuid script down in a
2846 * non-accessible directory. I don't know what to do about that.
2847 * But I don't think it's too important. The manual lies when
2848 * it says access() is useful in setuid programs.
2850 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2851 Perl_croak(aTHX_ "Permission denied");
2853 /* If we can swap euid and uid, then we can determine access rights
2854 * with a simple stat of the file, and then compare device and
2855 * inode to make sure we did stat() on the same file we opened.
2856 * Then we just have to make sure he or she can execute it.
2859 struct stat tmpstatbuf;
2863 setreuid(PL_euid,PL_uid) < 0
2866 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2869 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2870 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2871 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2872 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2873 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2874 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2875 Perl_croak(aTHX_ "Permission denied");
2877 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2878 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2879 (void)PerlIO_close(PL_rsfp);
2880 Perl_croak(aTHX_ "Permission denied\n");
2884 setreuid(PL_uid,PL_euid) < 0
2886 # if defined(HAS_SETRESUID)
2887 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2890 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2891 Perl_croak(aTHX_ "Can't reswap uid and euid");
2892 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2893 Perl_croak(aTHX_ "Permission denied\n");
2895 #endif /* HAS_SETREUID */
2896 #endif /* IAMSUID */
2898 if (!S_ISREG(PL_statbuf.st_mode))
2899 Perl_croak(aTHX_ "Permission denied");
2900 if (PL_statbuf.st_mode & S_IWOTH)
2901 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2902 PL_doswitches = FALSE; /* -s is insecure in suid */
2903 CopLINE_inc(PL_curcop);
2904 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2905 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2906 Perl_croak(aTHX_ "No #! line");
2907 s = SvPV(PL_linestr,n_a)+2;
2909 while (!isSPACE(*s)) s++;
2910 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2911 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2912 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2913 Perl_croak(aTHX_ "Not a perl script");
2914 while (*s == ' ' || *s == '\t') s++;
2916 * #! arg must be what we saw above. They can invoke it by
2917 * mentioning suidperl explicitly, but they may not add any strange
2918 * arguments beyond what #! says if they do invoke suidperl that way.
2920 len = strlen(validarg);
2921 if (strEQ(validarg," PHOOEY ") ||
2922 strnNE(s,validarg,len) || !isSPACE(s[len]))
2923 Perl_croak(aTHX_ "Args must match #! line");
2926 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2927 PL_euid == PL_statbuf.st_uid)
2929 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2930 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2931 #endif /* IAMSUID */
2933 if (PL_euid) { /* oops, we're not the setuid root perl */
2934 (void)PerlIO_close(PL_rsfp);
2937 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2938 (int)PERL_REVISION, (int)PERL_VERSION,
2939 (int)PERL_SUBVERSION), PL_origargv);
2941 Perl_croak(aTHX_ "Can't do setuid\n");
2944 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2946 (void)setegid(PL_statbuf.st_gid);
2949 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2951 #ifdef HAS_SETRESGID
2952 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2954 PerlProc_setgid(PL_statbuf.st_gid);
2958 if (PerlProc_getegid() != PL_statbuf.st_gid)
2959 Perl_croak(aTHX_ "Can't do setegid!\n");
2961 if (PL_statbuf.st_mode & S_ISUID) {
2962 if (PL_statbuf.st_uid != PL_euid)
2964 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2967 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2969 #ifdef HAS_SETRESUID
2970 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2972 PerlProc_setuid(PL_statbuf.st_uid);
2976 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2977 Perl_croak(aTHX_ "Can't do seteuid!\n");
2979 else if (PL_uid) { /* oops, mustn't run as root */
2981 (void)seteuid((Uid_t)PL_uid);
2984 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2986 #ifdef HAS_SETRESUID
2987 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2989 PerlProc_setuid((Uid_t)PL_uid);
2993 if (PerlProc_geteuid() != PL_uid)
2994 Perl_croak(aTHX_ "Can't do seteuid!\n");
2997 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2998 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3001 else if (PL_preprocess)
3002 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3003 else if (fdscript >= 0)
3004 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3006 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3008 /* We absolutely must clear out any saved ids here, so we */
3009 /* exec the real perl, substituting fd script for scriptname. */
3010 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3011 PerlIO_rewind(PL_rsfp);
3012 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3013 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3014 if (!PL_origargv[which])
3015 Perl_croak(aTHX_ "Permission denied");
3016 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3017 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3018 #if defined(HAS_FCNTL) && defined(F_SETFD)
3019 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3021 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3022 (int)PERL_REVISION, (int)PERL_VERSION,
3023 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3024 Perl_croak(aTHX_ "Can't do setuid\n");
3025 #endif /* IAMSUID */
3027 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3028 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3030 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3031 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3033 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3036 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3037 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3038 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3039 /* not set-id, must be wrapped */
3045 S_find_beginning(pTHX)
3047 register char *s, *s2;
3049 /* skip forward in input to the real script? */
3052 #ifdef MACOS_TRADITIONAL
3053 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3055 while (PL_doextract || gMacPerl_AlwaysExtract) {
3056 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3057 if (!gMacPerl_AlwaysExtract)
3058 Perl_croak(aTHX_ "No Perl script found in input\n");
3060 if (PL_doextract) /* require explicit override ? */
3061 if (!OverrideExtract(PL_origfilename))
3062 Perl_croak(aTHX_ "User aborted script\n");
3064 PL_doextract = FALSE;
3066 /* Pater peccavi, file does not have #! */
3067 PerlIO_rewind(PL_rsfp);
3072 while (PL_doextract) {
3073 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3074 Perl_croak(aTHX_ "No Perl script found in input\n");
3076 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3077 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3078 PL_doextract = FALSE;
3079 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3081 while (*s == ' ' || *s == '\t') s++;
3083 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3084 if (strnEQ(s2-4,"perl",4))
3086 while ((s = moreswitches(s)))
3097 PL_uid = PerlProc_getuid();
3098 PL_euid = PerlProc_geteuid();
3099 PL_gid = PerlProc_getgid();
3100 PL_egid = PerlProc_getegid();
3102 PL_uid |= PL_gid << 16;
3103 PL_euid |= PL_egid << 16;
3105 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3109 S_forbid_setid(pTHX_ char *s)
3111 if (PL_euid != PL_uid)
3112 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3113 if (PL_egid != PL_gid)
3114 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3118 Perl_init_debugger(pTHX)
3121 HV *ostash = PL_curstash;
3123 PL_curstash = PL_debstash;
3124 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3125 AvREAL_off(PL_dbargs);
3126 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3127 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3128 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3129 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3130 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3131 sv_setiv(PL_DBsingle, 0);
3132 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3133 sv_setiv(PL_DBtrace, 0);
3134 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3135 sv_setiv(PL_DBsignal, 0);
3136 PL_curstash = ostash;
3139 #ifndef STRESS_REALLOC
3140 #define REASONABLE(size) (size)
3142 #define REASONABLE(size) (1) /* unreasonable */
3146 Perl_init_stacks(pTHX)
3148 /* start with 128-item stack and 8K cxstack */
3149 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3150 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3151 PL_curstackinfo->si_type = PERLSI_MAIN;
3152 PL_curstack = PL_curstackinfo->si_stack;
3153 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3155 PL_stack_base = AvARRAY(PL_curstack);
3156 PL_stack_sp = PL_stack_base;
3157 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3159 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3162 PL_tmps_max = REASONABLE(128);
3164 New(54,PL_markstack,REASONABLE(32),I32);
3165 PL_markstack_ptr = PL_markstack;
3166 PL_markstack_max = PL_markstack + REASONABLE(32);
3170 New(54,PL_scopestack,REASONABLE(32),I32);
3171 PL_scopestack_ix = 0;
3172 PL_scopestack_max = REASONABLE(32);
3174 New(54,PL_savestack,REASONABLE(128),ANY);
3175 PL_savestack_ix = 0;
3176 PL_savestack_max = REASONABLE(128);
3178 New(54,PL_retstack,REASONABLE(16),OP*);
3180 PL_retstack_max = REASONABLE(16);
3189 while (PL_curstackinfo->si_next)
3190 PL_curstackinfo = PL_curstackinfo->si_next;
3191 while (PL_curstackinfo) {
3192 PERL_SI *p = PL_curstackinfo->si_prev;
3193 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3194 Safefree(PL_curstackinfo->si_cxstack);
3195 Safefree(PL_curstackinfo);
3196 PL_curstackinfo = p;
3198 Safefree(PL_tmps_stack);
3199 Safefree(PL_markstack);
3200 Safefree(PL_scopestack);
3201 Safefree(PL_savestack);
3202 Safefree(PL_retstack);
3206 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3217 lex_start(PL_linestr);
3219 PL_subname = newSVpvn("main",4);
3223 S_init_predump_symbols(pTHX)
3229 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3230 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3231 GvMULTI_on(PL_stdingv);
3232 io = GvIOp(PL_stdingv);
3233 IoIFP(io) = PerlIO_stdin();
3234 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3236 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3238 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3241 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3243 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3245 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3247 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3248 GvMULTI_on(PL_stderrgv);
3249 io = GvIOp(PL_stderrgv);
3250 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3251 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3253 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3255 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3258 Safefree(PL_osname);
3259 PL_osname = savepv(OSNAME);
3263 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3270 argc--,argv++; /* skip name of script */
3271 if (PL_doswitches) {
3272 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3275 if (argv[0][1] == '-' && !argv[0][2]) {
3279 if ((s = strchr(argv[0], '='))) {
3281 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3284 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3287 PL_toptarget = NEWSV(0,0);
3288 sv_upgrade(PL_toptarget, SVt_PVFM);
3289 sv_setpvn(PL_toptarget, "", 0);
3290 PL_bodytarget = NEWSV(0,0);
3291 sv_upgrade(PL_bodytarget, SVt_PVFM);
3292 sv_setpvn(PL_bodytarget, "", 0);
3293 PL_formtarget = PL_bodytarget;
3296 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3297 #ifdef MACOS_TRADITIONAL
3298 /* $0 is not majick on a Mac */
3299 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3301 sv_setpv(GvSV(tmpgv),PL_origfilename);
3302 magicname("0", "0", 1);
3305 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3307 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3309 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3311 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3312 GvMULTI_on(PL_argvgv);
3313 (void)gv_AVadd(PL_argvgv);
3314 av_clear(GvAVn(PL_argvgv));
3315 for (; argc > 0; argc--,argv++) {
3316 SV *sv = newSVpv(argv[0],0);
3317 av_push(GvAVn(PL_argvgv),sv);
3318 if (PL_widesyscalls)
3319 (void)sv_utf8_decode(sv);
3322 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3324 GvMULTI_on(PL_envgv);
3325 hv = GvHVn(PL_envgv);
3326 hv_magic(hv, PL_envgv, 'E');
3327 #ifdef USE_ENVIRON_ARRAY
3328 /* Note that if the supplied env parameter is actually a copy
3329 of the global environ then it may now point to free'd memory
3330 if the environment has been modified since. To avoid this
3331 problem we treat env==NULL as meaning 'use the default'
3336 environ[0] = Nullch;
3337 for (; *env; env++) {
3338 if (!(s = strchr(*env,'=')))
3344 sv = newSVpv(s--,0);
3345 (void)hv_store(hv, *env, s - *env, sv, 0);
3347 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3348 /* Sins of the RTL. See note in my_setenv(). */
3349 (void)PerlEnv_putenv(savepv(*env));
3353 #ifdef DYNAMIC_ENV_FETCH
3354 HvNAME(hv) = savepv(ENV_HV_NAME);
3358 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3359 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3363 S_init_perllib(pTHX)
3368 s = PerlEnv_getenv("PERL5LIB");
3370 incpush(s, TRUE, TRUE);
3372 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3374 /* Treat PERL5?LIB as a possible search list logical name -- the
3375 * "natural" VMS idiom for a Unix path string. We allow each
3376 * element to be a set of |-separated directories for compatibility.
3380 if (my_trnlnm("PERL5LIB",buf,0))
3381 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3383 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3387 /* Use the ~-expanded versions of APPLLIB (undocumented),
3388 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3391 incpush(APPLLIB_EXP, TRUE, TRUE);
3395 incpush(ARCHLIB_EXP, FALSE, FALSE);
3397 #ifdef MACOS_TRADITIONAL
3399 struct stat tmpstatbuf;
3400 SV * privdir = NEWSV(55, 0);
3401 char * macperl = PerlEnv_getenv("MACPERL");
3406 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3407 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3408 incpush(SvPVX(privdir), TRUE, FALSE);
3409 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3410 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3411 incpush(SvPVX(privdir), TRUE, FALSE);
3413 SvREFCNT_dec(privdir);
3416 incpush(":", FALSE, FALSE);
3419 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3422 incpush(PRIVLIB_EXP, TRUE, FALSE);
3424 incpush(PRIVLIB_EXP, FALSE, FALSE);
3428 /* sitearch is always relative to sitelib on Windows for
3429 * DLL-based path intuition to work correctly */
3430 # if !defined(WIN32)
3431 incpush(SITEARCH_EXP, FALSE, FALSE);
3437 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3439 incpush(SITELIB_EXP, FALSE, FALSE);
3443 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3444 incpush(SITELIB_STEM, FALSE, TRUE);
3447 #ifdef PERL_VENDORARCH_EXP
3448 /* vendorarch is always relative to vendorlib on Windows for
3449 * DLL-based path intuition to work correctly */
3450 # if !defined(WIN32)
3451 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3455 #ifdef PERL_VENDORLIB_EXP
3457 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3459 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3463 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3464 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3467 #ifdef PERL_OTHERLIBDIRS
3468 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3472 incpush(".", FALSE, FALSE);
3473 #endif /* MACOS_TRADITIONAL */
3476 #if defined(DOSISH) || defined(EPOC)
3477 # define PERLLIB_SEP ';'
3480 # define PERLLIB_SEP '|'
3482 # if defined(MACOS_TRADITIONAL)
3483 # define PERLLIB_SEP ','
3485 # define PERLLIB_SEP ':'
3489 #ifndef PERLLIB_MANGLE
3490 # define PERLLIB_MANGLE(s,n) (s)
3494 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3496 SV *subdir = Nullsv;
3501 if (addsubdirs || addoldvers) {
3502 subdir = sv_newmortal();
3505 /* Break at all separators */
3507 SV *libdir = NEWSV(55,0);
3510 /* skip any consecutive separators */
3511 while ( *p == PERLLIB_SEP ) {
3512 /* Uncomment the next line for PATH semantics */
3513 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3517 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3518 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3523 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3524 p = Nullch; /* break out */
3526 #ifdef MACOS_TRADITIONAL
3527 if (!strchr(SvPVX(libdir), ':'))
3528 sv_insert(libdir, 0, 0, ":", 1);
3529 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3530 sv_catpv(libdir, ":");
3534 * BEFORE pushing libdir onto @INC we may first push version- and
3535 * archname-specific sub-directories.
3537 if (addsubdirs || addoldvers) {
3538 #ifdef PERL_INC_VERSION_LIST
3539 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3540 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3541 const char **incver;
3543 struct stat tmpstatbuf;
3548 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3550 while (unix[len-1] == '/') len--; /* Cosmetic */
3551 sv_usepvn(libdir,unix,len);
3554 PerlIO_printf(Perl_error_log,
3555 "Failed to unixify @INC element \"%s\"\n",
3559 #ifdef MACOS_TRADITIONAL
3560 #define PERL_AV_SUFFIX_FMT ""
3561 #define PERL_ARCH_FMT ":%s"
3563 #define PERL_AV_SUFFIX_FMT "/"
3564 #define PERL_ARCH_FMT "/%s"
3566 /* .../version/archname if -d .../version/archname */
3567 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3569 (int)PERL_REVISION, (int)PERL_VERSION,
3570 (int)PERL_SUBVERSION, ARCHNAME);
3571 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3572 S_ISDIR(tmpstatbuf.st_mode))
3573 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3575 /* .../version if -d .../version */
3576 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3577 (int)PERL_REVISION, (int)PERL_VERSION,
3578 (int)PERL_SUBVERSION);
3579 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3580 S_ISDIR(tmpstatbuf.st_mode))
3581 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3583 /* .../archname if -d .../archname */
3584 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3585 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3586 S_ISDIR(tmpstatbuf.st_mode))
3587 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3590 #ifdef PERL_INC_VERSION_LIST
3592 for (incver = incverlist; *incver; incver++) {
3593 /* .../xxx if -d .../xxx */
3594 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3595 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3596 S_ISDIR(tmpstatbuf.st_mode))
3597 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3603 /* finally push this lib directory on the end of @INC */
3604 av_push(GvAVn(PL_incgv), libdir);
3609 STATIC struct perl_thread *
3610 S_init_main_thread(pTHX)
3612 #if !defined(PERL_IMPLICIT_CONTEXT)
3613 struct perl_thread *thr;
3617 Newz(53, thr, 1, struct perl_thread);
3618 PL_curcop = &PL_compiling;
3619 thr->interp = PERL_GET_INTERP;
3620 thr->cvcache = newHV();
3621 thr->threadsv = newAV();
3622 /* thr->threadsvp is set when find_threadsv is called */
3623 thr->specific = newAV();
3624 thr->flags = THRf_R_JOINABLE;
3625 MUTEX_INIT(&thr->mutex);
3626 /* Handcraft thrsv similarly to mess_sv */
3627 New(53, PL_thrsv, 1, SV);
3628 Newz(53, xpv, 1, XPV);
3629 SvFLAGS(PL_thrsv) = SVt_PV;
3630 SvANY(PL_thrsv) = (void*)xpv;
3631 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3632 SvPVX(PL_thrsv) = (char*)thr;
3633 SvCUR_set(PL_thrsv, sizeof(thr));
3634 SvLEN_set(PL_thrsv, sizeof(thr));
3635 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3636 thr->oursv = PL_thrsv;
3637 PL_chopset = " \n-";
3640 MUTEX_LOCK(&PL_threads_mutex);
3646 MUTEX_UNLOCK(&PL_threads_mutex);
3648 #ifdef HAVE_THREAD_INTERN
3649 Perl_init_thread_intern(thr);
3652 #ifdef SET_THREAD_SELF
3653 SET_THREAD_SELF(thr);
3655 thr->self = pthread_self();
3656 #endif /* SET_THREAD_SELF */
3660 * These must come after the SET_THR because sv_setpvn does
3661 * SvTAINT and the taint fields require dTHR.
3663 PL_toptarget = NEWSV(0,0);
3664 sv_upgrade(PL_toptarget, SVt_PVFM);
3665 sv_setpvn(PL_toptarget, "", 0);
3666 PL_bodytarget = NEWSV(0,0);
3667 sv_upgrade(PL_bodytarget, SVt_PVFM);
3668 sv_setpvn(PL_bodytarget, "", 0);
3669 PL_formtarget = PL_bodytarget;
3670 thr->errsv = newSVpvn("", 0);
3671 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3674 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3675 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3676 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3677 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3678 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3680 PL_reginterp_cnt = 0;
3684 #endif /* USE_THREADS */
3687 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3691 line_t oldline = CopLINE(PL_curcop);
3697 while (AvFILL(paramList) >= 0) {
3698 cv = (CV*)av_shift(paramList);
3699 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3700 /* save PL_beginav for compiler */
3701 if (! PL_beginav_save)
3702 PL_beginav_save = newAV();
3703 av_push(PL_beginav_save, (SV*)cv);
3707 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3708 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3714 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3718 (void)SvPV(atsv, len);
3721 PL_curcop = &PL_compiling;
3722 CopLINE_set(PL_curcop, oldline);
3723 if (paramList == PL_beginav)
3724 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3726 Perl_sv_catpvf(aTHX_ atsv,
3727 "%s failed--call queue aborted",
3728 paramList == PL_checkav ? "CHECK"
3729 : paramList == PL_initav ? "INIT"
3731 while (PL_scopestack_ix > oldscope)
3734 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3741 /* my_exit() was called */
3742 while (PL_scopestack_ix > oldscope)
3745 PL_curstash = PL_defstash;
3746 PL_curcop = &PL_compiling;
3747 CopLINE_set(PL_curcop, oldline);
3749 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3750 if (paramList == PL_beginav)
3751 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3753 Perl_croak(aTHX_ "%s failed--call queue aborted",
3754 paramList == PL_checkav ? "CHECK"
3755 : paramList == PL_initav ? "INIT"
3762 PL_curcop = &PL_compiling;
3763 CopLINE_set(PL_curcop, oldline);
3766 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3774 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3776 S_vcall_list_body(pTHX_ va_list args)
3778 CV *cv = va_arg(args, CV*);
3779 return call_list_body(cv);
3784 S_call_list_body(pTHX_ CV *cv)
3786 PUSHMARK(PL_stack_sp);
3787 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3792 Perl_my_exit(pTHX_ U32 status)
3796 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3797 thr, (unsigned long) status));
3806 STATUS_NATIVE_SET(status);
3813 Perl_my_failure_exit(pTHX)
3816 if (vaxc$errno & 1) {
3817 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3818 STATUS_NATIVE_SET(44);
3821 if (!vaxc$errno && errno) /* unlikely */
3822 STATUS_NATIVE_SET(44);
3824 STATUS_NATIVE_SET(vaxc$errno);
3829 STATUS_POSIX_SET(errno);
3831 exitstatus = STATUS_POSIX >> 8;
3832 if (exitstatus & 255)
3833 STATUS_POSIX_SET(exitstatus);
3835 STATUS_POSIX_SET(255);
3842 S_my_exit_jump(pTHX)
3845 register PERL_CONTEXT *cx;
3850 SvREFCNT_dec(PL_e_script);
3851 PL_e_script = Nullsv;
3854 POPSTACK_TO(PL_mainstack);
3855 if (cxstack_ix >= 0) {
3858 POPBLOCK(cx,PL_curpm);
3870 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3873 p = SvPVX(PL_e_script);
3874 nl = strchr(p, '\n');
3875 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3877 filter_del(read_e_script);
3880 sv_catpvn(buf_sv, p, nl-p);
3881 sv_chop(PL_e_script, nl);