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(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 /* Build version strings using "native" characters */
257 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
258 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
259 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
261 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
262 SvPOK_on(PL_patchlevel);
263 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
264 + ((NV)PERL_VERSION / (NV)1000)
265 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
266 + ((NV)PERL_SUBVERSION / (NV)1000000)
269 SvNOK_on(PL_patchlevel); /* dual valued */
270 SvUTF8_on(PL_patchlevel);
271 SvREADONLY_on(PL_patchlevel);
274 #if defined(LOCAL_PATCH_COUNT)
275 PL_localpatches = local_patches; /* For possible -v */
278 #ifdef HAVE_INTERP_INTERN
282 PerlIO_init(); /* Hook to IO system */
284 PL_fdpid = newAV(); /* for remembering popen pids by fd */
285 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
286 PL_errors = newSVpvn("",0);
292 =for apidoc perl_destruct
294 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 /* jettison our possibly duplicated environment */
444 #ifdef USE_ENVIRON_ARRAY
445 if (environ != PL_origenviron) {
448 for (i = 0; environ[i]; i++)
449 safesysfree(environ[i]);
450 /* Must use safesysfree() when working with environ. */
451 safesysfree(environ);
453 environ = PL_origenviron;
457 /* loosen bonds of global variables */
460 (void)PerlIO_close(PL_rsfp);
464 /* Filters for program text */
465 SvREFCNT_dec(PL_rsfp_filters);
466 PL_rsfp_filters = Nullav;
469 PL_preprocess = FALSE;
475 PL_doswitches = FALSE;
476 PL_dowarn = G_WARN_OFF;
477 PL_doextract = FALSE;
478 PL_sawampersand = FALSE; /* must save all match strings */
481 Safefree(PL_inplace);
483 SvREFCNT_dec(PL_patchlevel);
486 SvREFCNT_dec(PL_e_script);
487 PL_e_script = Nullsv;
490 /* magical thingies */
492 SvREFCNT_dec(PL_ofs_sv); /* $, */
495 SvREFCNT_dec(PL_ors_sv); /* $\ */
498 SvREFCNT_dec(PL_rs); /* $/ */
501 SvREFCNT_dec(PL_nrs); /* $/ helper */
504 PL_multiline = 0; /* $* */
505 Safefree(PL_osname); /* $^O */
508 SvREFCNT_dec(PL_statname);
509 PL_statname = Nullsv;
512 /* defgv, aka *_ should be taken care of elsewhere */
514 /* clean up after study() */
515 SvREFCNT_dec(PL_lastscream);
516 PL_lastscream = Nullsv;
517 Safefree(PL_screamfirst);
519 Safefree(PL_screamnext);
523 Safefree(PL_efloatbuf);
524 PL_efloatbuf = Nullch;
527 /* startup and shutdown function lists */
528 SvREFCNT_dec(PL_beginav);
529 SvREFCNT_dec(PL_endav);
530 SvREFCNT_dec(PL_checkav);
531 SvREFCNT_dec(PL_initav);
537 /* shortcuts just get cleared */
543 PL_argvoutgv = Nullgv;
545 PL_stderrgv = Nullgv;
546 PL_last_in_gv = Nullgv;
548 PL_debstash = Nullhv;
550 /* reset so print() ends up where we expect */
553 SvREFCNT_dec(PL_argvout_stack);
554 PL_argvout_stack = Nullav;
556 SvREFCNT_dec(PL_modglobal);
557 PL_modglobal = Nullhv;
558 SvREFCNT_dec(PL_preambleav);
559 PL_preambleav = Nullav;
560 SvREFCNT_dec(PL_subname);
562 SvREFCNT_dec(PL_linestr);
564 SvREFCNT_dec(PL_pidstatus);
565 PL_pidstatus = Nullhv;
566 SvREFCNT_dec(PL_toptarget);
567 PL_toptarget = Nullsv;
568 SvREFCNT_dec(PL_bodytarget);
569 PL_bodytarget = Nullsv;
570 PL_formtarget = Nullsv;
572 /* free locale stuff */
573 #ifdef USE_LOCALE_COLLATE
574 Safefree(PL_collation_name);
575 PL_collation_name = Nullch;
578 #ifdef USE_LOCALE_NUMERIC
579 Safefree(PL_numeric_name);
580 PL_numeric_name = Nullch;
581 SvREFCNT_dec(PL_numeric_radix);
584 /* clear utf8 character classes */
585 SvREFCNT_dec(PL_utf8_alnum);
586 SvREFCNT_dec(PL_utf8_alnumc);
587 SvREFCNT_dec(PL_utf8_ascii);
588 SvREFCNT_dec(PL_utf8_alpha);
589 SvREFCNT_dec(PL_utf8_space);
590 SvREFCNT_dec(PL_utf8_cntrl);
591 SvREFCNT_dec(PL_utf8_graph);
592 SvREFCNT_dec(PL_utf8_digit);
593 SvREFCNT_dec(PL_utf8_upper);
594 SvREFCNT_dec(PL_utf8_lower);
595 SvREFCNT_dec(PL_utf8_print);
596 SvREFCNT_dec(PL_utf8_punct);
597 SvREFCNT_dec(PL_utf8_xdigit);
598 SvREFCNT_dec(PL_utf8_mark);
599 SvREFCNT_dec(PL_utf8_toupper);
600 SvREFCNT_dec(PL_utf8_tolower);
601 PL_utf8_alnum = Nullsv;
602 PL_utf8_alnumc = Nullsv;
603 PL_utf8_ascii = Nullsv;
604 PL_utf8_alpha = Nullsv;
605 PL_utf8_space = Nullsv;
606 PL_utf8_cntrl = Nullsv;
607 PL_utf8_graph = Nullsv;
608 PL_utf8_digit = Nullsv;
609 PL_utf8_upper = Nullsv;
610 PL_utf8_lower = Nullsv;
611 PL_utf8_print = Nullsv;
612 PL_utf8_punct = Nullsv;
613 PL_utf8_xdigit = Nullsv;
614 PL_utf8_mark = Nullsv;
615 PL_utf8_toupper = Nullsv;
616 PL_utf8_totitle = Nullsv;
617 PL_utf8_tolower = Nullsv;
619 if (!specialWARN(PL_compiling.cop_warnings))
620 SvREFCNT_dec(PL_compiling.cop_warnings);
621 PL_compiling.cop_warnings = Nullsv;
622 if (!specialCopIO(PL_compiling.cop_io))
623 SvREFCNT_dec(PL_compiling.cop_io);
624 PL_compiling.cop_io = Nullsv;
626 Safefree(CopFILE(&PL_compiling));
627 CopFILE(&PL_compiling) = Nullch;
628 Safefree(CopSTASHPV(&PL_compiling));
630 SvREFCNT_dec(CopFILEGV(&PL_compiling));
631 CopFILEGV(&PL_compiling) = Nullgv;
632 /* cop_stash is not refcounted */
635 /* Prepare to destruct main symbol table. */
640 SvREFCNT_dec(PL_curstname);
641 PL_curstname = Nullsv;
643 /* clear queued errors */
644 SvREFCNT_dec(PL_errors);
648 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
649 if (PL_scopestack_ix != 0)
650 Perl_warner(aTHX_ WARN_INTERNAL,
651 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
652 (long)PL_scopestack_ix);
653 if (PL_savestack_ix != 0)
654 Perl_warner(aTHX_ WARN_INTERNAL,
655 "Unbalanced saves: %ld more saves than restores\n",
656 (long)PL_savestack_ix);
657 if (PL_tmps_floor != -1)
658 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
659 (long)PL_tmps_floor + 1);
660 if (cxstack_ix != -1)
661 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
662 (long)cxstack_ix + 1);
665 /* Now absolutely destruct everything, somehow or other, loops or no. */
667 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
668 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
669 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
670 last_sv_count = PL_sv_count;
673 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
674 SvFLAGS(PL_fdpid) |= SVt_PVAV;
675 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
676 SvFLAGS(PL_strtab) |= SVt_PVHV;
678 AvREAL_off(PL_fdpid); /* no surviving entries */
679 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
682 #ifdef HAVE_INTERP_INTERN
686 /* Destruct the global string table. */
688 /* Yell and reset the HeVAL() slots that are still holding refcounts,
689 * so that sv_free() won't fail on them.
697 max = HvMAX(PL_strtab);
698 array = HvARRAY(PL_strtab);
701 if (hent && ckWARN_d(WARN_INTERNAL)) {
702 Perl_warner(aTHX_ WARN_INTERNAL,
703 "Unbalanced string table refcount: (%d) for \"%s\"",
704 HeVAL(hent) - Nullsv, HeKEY(hent));
705 HeVAL(hent) = Nullsv;
715 SvREFCNT_dec(PL_strtab);
718 /* free the pointer table used for cloning */
719 ptr_table_free(PL_ptr_table);
722 /* free special SVs */
724 SvREFCNT(&PL_sv_yes) = 0;
725 sv_clear(&PL_sv_yes);
726 SvANY(&PL_sv_yes) = NULL;
727 SvFLAGS(&PL_sv_yes) = 0;
729 SvREFCNT(&PL_sv_no) = 0;
731 SvANY(&PL_sv_no) = NULL;
732 SvFLAGS(&PL_sv_no) = 0;
734 SvREFCNT(&PL_sv_undef) = 0;
735 SvREADONLY_off(&PL_sv_undef);
737 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
738 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
740 Safefree(PL_origfilename);
741 Safefree(PL_reg_start_tmp);
743 Safefree(PL_reg_curpm);
744 Safefree(PL_reg_poscache);
745 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
746 Safefree(PL_op_mask);
747 Safefree(PL_psig_ptr);
748 Safefree(PL_psig_name);
749 Safefree(PL_bitcount);
750 Safefree(PL_psig_pend);
752 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
754 DEBUG_P(debprofdump());
756 MUTEX_DESTROY(&PL_strtab_mutex);
757 MUTEX_DESTROY(&PL_sv_mutex);
758 MUTEX_DESTROY(&PL_eval_mutex);
759 MUTEX_DESTROY(&PL_cred_mutex);
760 MUTEX_DESTROY(&PL_fdpid_mutex);
761 COND_DESTROY(&PL_eval_cond);
762 #ifdef EMULATE_ATOMIC_REFCOUNTS
763 MUTEX_DESTROY(&PL_svref_mutex);
764 #endif /* EMULATE_ATOMIC_REFCOUNTS */
766 /* As the penultimate thing, free the non-arena SV for thrsv */
767 Safefree(SvPVX(PL_thrsv));
768 Safefree(SvANY(PL_thrsv));
771 #endif /* USE_THREADS */
775 /* As the absolutely last thing, free the non-arena SV for mess() */
778 /* it could have accumulated taint magic */
779 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
782 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
783 moremagic = mg->mg_moremagic;
784 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
785 Safefree(mg->mg_ptr);
789 /* we know that type >= SVt_PV */
790 (void)SvOOK_off(PL_mess_sv);
791 Safefree(SvPVX(PL_mess_sv));
792 Safefree(SvANY(PL_mess_sv));
793 Safefree(PL_mess_sv);
799 =for apidoc perl_free
801 Releases a Perl interpreter. See L<perlembed>.
809 #if defined(PERL_OBJECT)
813 # if defined(PERL_IMPLICIT_SYS)
814 void *host = w32_internal_host;
815 if (PerlProc_lasthost()) {
819 win32_delete_internal_host(host);
831 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
833 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
834 PL_exitlist[PL_exitlistlen].fn = fn;
835 PL_exitlist[PL_exitlistlen].ptr = ptr;
840 =for apidoc perl_parse
842 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
848 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
857 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
860 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
861 setuid perl scripts securely.\n");
865 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
866 _dyld_lookup_and_bind
867 ("__environ", (unsigned long *) &environ_pointer, NULL);
872 #ifdef USE_ENVIRON_ARRAY
873 PL_origenviron = environ;
878 /* Come here if running an undumped a.out. */
880 PL_origfilename = savepv(argv[0]);
881 PL_do_undump = FALSE;
882 cxstack_ix = -1; /* start label stack again */
884 init_postdump_symbols(argc,argv,env);
889 PL_curpad = AvARRAY(PL_comppad);
890 op_free(PL_main_root);
891 PL_main_root = Nullop;
893 PL_main_start = Nullop;
894 SvREFCNT_dec(PL_main_cv);
898 oldscope = PL_scopestack_ix;
899 PL_dowarn = G_WARN_OFF;
901 #ifdef PERL_FLEXIBLE_EXCEPTIONS
902 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
908 #ifndef PERL_FLEXIBLE_EXCEPTIONS
909 parse_body(env,xsinit);
912 call_list(oldscope, PL_checkav);
919 /* my_exit() was called */
920 while (PL_scopestack_ix > oldscope)
923 PL_curstash = PL_defstash;
925 call_list(oldscope, PL_checkav);
926 ret = STATUS_NATIVE_EXPORT;
929 PerlIO_printf(Perl_error_log, "panic: top_env\n");
937 #ifdef PERL_FLEXIBLE_EXCEPTIONS
939 S_vparse_body(pTHX_ va_list args)
941 char **env = va_arg(args, char**);
942 XSINIT_t xsinit = va_arg(args, XSINIT_t);
944 return parse_body(env, xsinit);
949 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
951 int argc = PL_origargc;
952 char **argv = PL_origargv;
953 char *scriptname = NULL;
955 VOL bool dosearch = FALSE;
960 char *cddir = Nullch;
962 sv_setpvn(PL_linestr,"",0);
963 sv = newSVpvn("",0); /* first used for -I flags */
967 for (argc--,argv++; argc > 0; argc--,argv++) {
968 if (argv[0][0] != '-' || !argv[0][1])
972 validarg = " PHOOEY ";
981 win32_argv2utf8(argc-1, argv+1);
984 #ifndef PERL_STRICT_CR
1008 if ((s = moreswitches(s)))
1018 #ifdef MACOS_TRADITIONAL
1019 /* ignore -e for Dev:Pseudo argument */
1020 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1023 if (PL_euid != PL_uid || PL_egid != PL_gid)
1024 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1026 PL_e_script = newSVpvn("",0);
1027 filter_add(read_e_script, NULL);
1030 sv_catpv(PL_e_script, s);
1032 sv_catpv(PL_e_script, argv[1]);
1036 Perl_croak(aTHX_ "No code specified for -e");
1037 sv_catpv(PL_e_script, "\n");
1040 case 'I': /* -I handled both here and in moreswitches() */
1042 if (!*++s && (s=argv[1]) != Nullch) {
1047 STRLEN len = strlen(s);
1048 p = savepvn(s, len);
1049 incpush(p, TRUE, TRUE);
1050 sv_catpvn(sv, "-I", 2);
1051 sv_catpvn(sv, p, len);
1052 sv_catpvn(sv, " ", 1);
1056 Perl_croak(aTHX_ "No directory specified for -I");
1060 PL_preprocess = TRUE;
1070 PL_preambleav = newAV();
1071 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1073 PL_Sv = newSVpv("print myconfig();",0);
1075 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1077 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1079 sv_catpv(PL_Sv,"\" Compile-time options:");
1081 sv_catpv(PL_Sv," DEBUGGING");
1083 # ifdef MULTIPLICITY
1084 sv_catpv(PL_Sv," MULTIPLICITY");
1087 sv_catpv(PL_Sv," USE_THREADS");
1089 # ifdef USE_ITHREADS
1090 sv_catpv(PL_Sv," USE_ITHREADS");
1092 # ifdef USE_64_BIT_INT
1093 sv_catpv(PL_Sv," USE_64_BIT_INT");
1095 # ifdef USE_64_BIT_ALL
1096 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1098 # ifdef USE_LONG_DOUBLE
1099 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1101 # ifdef USE_LARGE_FILES
1102 sv_catpv(PL_Sv," USE_LARGE_FILES");
1105 sv_catpv(PL_Sv," USE_SOCKS");
1108 sv_catpv(PL_Sv," PERL_OBJECT");
1110 # ifdef PERL_IMPLICIT_CONTEXT
1111 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1113 # ifdef PERL_IMPLICIT_SYS
1114 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1116 sv_catpv(PL_Sv,"\\n\",");
1118 #if defined(LOCAL_PATCH_COUNT)
1119 if (LOCAL_PATCH_COUNT > 0) {
1121 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1122 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1123 if (PL_localpatches[i])
1124 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1128 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1131 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1133 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1136 sv_catpv(PL_Sv, "; \
1138 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1139 print \" \\%ENV:\\n @env\\n\" if @env; \
1140 print \" \\@INC:\\n @INC\\n\";");
1143 PL_Sv = newSVpv("config_vars(qw(",0);
1144 sv_catpv(PL_Sv, ++s);
1145 sv_catpv(PL_Sv, "))");
1148 av_push(PL_preambleav, PL_Sv);
1149 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1152 PL_doextract = TRUE;
1160 if (!*++s || isSPACE(*s)) {
1164 /* catch use of gnu style long options */
1165 if (strEQ(s, "version")) {
1169 if (strEQ(s, "help")) {
1176 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1182 #ifndef SECURE_INTERNAL_GETENV
1185 (s = PerlEnv_getenv("PERL5OPT")))
1189 if (*s == '-' && *(s+1) == 'T')
1204 if (!strchr("DIMUdmw", *s))
1205 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1218 scriptname = argv[0];
1221 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1223 else if (scriptname == Nullch) {
1225 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1233 open_script(scriptname,dosearch,sv,&fdscript);
1235 validate_suid(validarg, scriptname,fdscript);
1238 #if defined(SIGCHLD) || defined(SIGCLD)
1241 # define SIGCHLD SIGCLD
1243 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1244 if (sigstate == SIG_IGN) {
1245 if (ckWARN(WARN_SIGNAL))
1246 Perl_warner(aTHX_ WARN_SIGNAL,
1247 "Can't ignore signal CHLD, forcing to default");
1248 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1254 #ifdef MACOS_TRADITIONAL
1255 if (PL_doextract || gMacPerl_AlwaysExtract) {
1260 if (cddir && PerlDir_chdir(cddir) < 0)
1261 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1265 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1266 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1267 CvUNIQUE_on(PL_compcv);
1269 PL_comppad = newAV();
1270 av_push(PL_comppad, Nullsv);
1271 PL_curpad = AvARRAY(PL_comppad);
1272 PL_comppad_name = newAV();
1273 PL_comppad_name_fill = 0;
1274 PL_min_intro_pending = 0;
1277 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1278 PL_curpad[0] = (SV*)newAV();
1279 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1280 CvOWNER(PL_compcv) = 0;
1281 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1282 MUTEX_INIT(CvMUTEXP(PL_compcv));
1283 #endif /* USE_THREADS */
1285 comppadlist = newAV();
1286 AvREAL_off(comppadlist);
1287 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1288 av_store(comppadlist, 1, (SV*)PL_comppad);
1289 CvPADLIST(PL_compcv) = comppadlist;
1291 boot_core_UNIVERSAL();
1293 boot_core_xsutils();
1297 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1299 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1305 # ifdef HAS_SOCKS5_INIT
1306 socks5_init(argv[0]);
1312 init_predump_symbols();
1313 /* init_postdump_symbols not currently designed to be called */
1314 /* more than once (ENV isn't cleared first, for example) */
1315 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1317 init_postdump_symbols(argc,argv,env);
1321 /* now parse the script */
1323 SETERRNO(0,SS$_NORMAL);
1325 #ifdef MACOS_TRADITIONAL
1326 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1328 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1330 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1331 MacPerl_MPWFileName(PL_origfilename));
1335 if (yyparse() || PL_error_count) {
1337 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1339 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1344 CopLINE_set(PL_curcop, 0);
1345 PL_curstash = PL_defstash;
1346 PL_preprocess = FALSE;
1348 SvREFCNT_dec(PL_e_script);
1349 PL_e_script = Nullsv;
1352 /* now that script is parsed, we can modify record separator */
1353 SvREFCNT_dec(PL_rs);
1354 PL_rs = SvREFCNT_inc(PL_nrs);
1355 sv_setsv(get_sv("/", TRUE), PL_rs);
1360 SAVECOPFILE(PL_curcop);
1361 SAVECOPLINE(PL_curcop);
1362 gv_check(PL_defstash);
1369 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1370 dump_mstats("after compilation:");
1379 =for apidoc perl_run
1381 Tells a Perl interpreter to run. See L<perlembed>.
1396 oldscope = PL_scopestack_ix;
1398 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1400 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1406 cxstack_ix = -1; /* start context stack again */
1408 case 0: /* normal completion */
1409 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1414 case 2: /* my_exit() */
1415 while (PL_scopestack_ix > oldscope)
1418 PL_curstash = PL_defstash;
1419 if (PL_endav && !PL_minus_c)
1420 call_list(oldscope, PL_endav);
1422 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1423 dump_mstats("after execution: ");
1425 ret = STATUS_NATIVE_EXPORT;
1429 POPSTACK_TO(PL_mainstack);
1432 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1442 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1444 S_vrun_body(pTHX_ va_list args)
1446 I32 oldscope = va_arg(args, I32);
1448 return run_body(oldscope);
1454 S_run_body(pTHX_ I32 oldscope)
1456 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1457 PL_sawampersand ? "Enabling" : "Omitting"));
1459 if (!PL_restartop) {
1460 DEBUG_x(dump_all());
1461 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1462 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1466 #ifdef MACOS_TRADITIONAL
1467 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1469 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1473 if (PERLDB_SINGLE && PL_DBsingle)
1474 sv_setiv(PL_DBsingle, 1);
1476 call_list(oldscope, PL_initav);
1482 PL_op = PL_restartop;
1486 else if (PL_main_start) {
1487 CvDEPTH(PL_main_cv) = 1;
1488 PL_op = PL_main_start;
1498 =for apidoc p||get_sv
1500 Returns the SV of the specified Perl scalar. If C<create> is set and the
1501 Perl variable does not exist then it will be created. If C<create> is not
1502 set and the variable does not exist then NULL is returned.
1508 Perl_get_sv(pTHX_ const char *name, I32 create)
1512 if (name[1] == '\0' && !isALPHA(name[0])) {
1513 PADOFFSET tmp = find_threadsv(name);
1514 if (tmp != NOT_IN_PAD)
1515 return THREADSV(tmp);
1517 #endif /* USE_THREADS */
1518 gv = gv_fetchpv(name, create, SVt_PV);
1525 =for apidoc p||get_av
1527 Returns the AV of the specified Perl array. If C<create> is set and the
1528 Perl variable does not exist then it will be created. If C<create> is not
1529 set and the variable does not exist then NULL is returned.
1535 Perl_get_av(pTHX_ const char *name, I32 create)
1537 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1546 =for apidoc p||get_hv
1548 Returns the HV of the specified Perl hash. If C<create> is set and the
1549 Perl variable does not exist then it will be created. If C<create> is not
1550 set and the variable does not exist then NULL is returned.
1556 Perl_get_hv(pTHX_ const char *name, I32 create)
1558 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1567 =for apidoc p||get_cv
1569 Returns the CV of the specified Perl subroutine. If C<create> is set and
1570 the Perl subroutine does not exist then it will be declared (which has the
1571 same effect as saying C<sub name;>). If C<create> is not set and the
1572 subroutine does not exist then NULL is returned.
1578 Perl_get_cv(pTHX_ const char *name, I32 create)
1580 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1581 /* XXX unsafe for threads if eval_owner isn't held */
1582 /* XXX this is probably not what they think they're getting.
1583 * It has the same effect as "sub name;", i.e. just a forward
1585 if (create && !GvCVu(gv))
1586 return newSUB(start_subparse(FALSE, 0),
1587 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1595 /* Be sure to refetch the stack pointer after calling these routines. */
1598 =for apidoc p||call_argv
1600 Performs a callback to the specified Perl sub. See L<perlcall>.
1606 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1608 /* See G_* flags in cop.h */
1609 /* null terminated arg list */
1616 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1621 return call_pv(sub_name, flags);
1625 =for apidoc p||call_pv
1627 Performs a callback to the specified Perl sub. See L<perlcall>.
1633 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1634 /* name of the subroutine */
1635 /* See G_* flags in cop.h */
1637 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1641 =for apidoc p||call_method
1643 Performs a callback to the specified Perl method. The blessed object must
1644 be on the stack. See L<perlcall>.
1650 Perl_call_method(pTHX_ const char *methname, I32 flags)
1651 /* name of the subroutine */
1652 /* See G_* flags in cop.h */
1654 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1657 /* May be called with any of a CV, a GV, or an SV containing the name. */
1659 =for apidoc p||call_sv
1661 Performs a callback to the Perl sub whose name is in the SV. See
1668 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1669 /* See G_* flags in cop.h */
1672 LOGOP myop; /* fake syntax tree node */
1677 bool oldcatch = CATCH_GET;
1682 if (flags & G_DISCARD) {
1687 Zero(&myop, 1, LOGOP);
1688 myop.op_next = Nullop;
1689 if (!(flags & G_NOARGS))
1690 myop.op_flags |= OPf_STACKED;
1691 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1692 (flags & G_ARRAY) ? OPf_WANT_LIST :
1697 EXTEND(PL_stack_sp, 1);
1698 *++PL_stack_sp = sv;
1700 oldscope = PL_scopestack_ix;
1702 if (PERLDB_SUB && PL_curstash != PL_debstash
1703 /* Handle first BEGIN of -d. */
1704 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1705 /* Try harder, since this may have been a sighandler, thus
1706 * curstash may be meaningless. */
1707 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1708 && !(flags & G_NODEBUG))
1709 PL_op->op_private |= OPpENTERSUB_DB;
1711 if (flags & G_METHOD) {
1712 Zero(&method_op, 1, UNOP);
1713 method_op.op_next = PL_op;
1714 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1715 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1716 PL_op = (OP*)&method_op;
1719 if (!(flags & G_EVAL)) {
1721 call_body((OP*)&myop, FALSE);
1722 retval = PL_stack_sp - (PL_stack_base + oldmark);
1723 CATCH_SET(oldcatch);
1726 myop.op_other = (OP*)&myop;
1728 /* we're trying to emulate pp_entertry() here */
1730 register PERL_CONTEXT *cx;
1731 I32 gimme = GIMME_V;
1736 push_return(Nullop);
1737 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1739 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1741 PL_in_eval = EVAL_INEVAL;
1742 if (flags & G_KEEPERR)
1743 PL_in_eval |= EVAL_KEEPERR;
1749 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1751 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1758 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1760 call_body((OP*)&myop, FALSE);
1762 retval = PL_stack_sp - (PL_stack_base + oldmark);
1763 if (!(flags & G_KEEPERR))
1770 /* my_exit() was called */
1771 PL_curstash = PL_defstash;
1774 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1775 Perl_croak(aTHX_ "Callback called exit");
1780 PL_op = PL_restartop;
1784 PL_stack_sp = PL_stack_base + oldmark;
1785 if (flags & G_ARRAY)
1789 *++PL_stack_sp = &PL_sv_undef;
1794 if (PL_scopestack_ix > oldscope) {
1798 register PERL_CONTEXT *cx;
1810 if (flags & G_DISCARD) {
1811 PL_stack_sp = PL_stack_base + oldmark;
1820 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1822 S_vcall_body(pTHX_ va_list args)
1824 OP *myop = va_arg(args, OP*);
1825 int is_eval = va_arg(args, int);
1827 call_body(myop, is_eval);
1833 S_call_body(pTHX_ OP *myop, int is_eval)
1835 if (PL_op == myop) {
1837 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1839 PL_op = Perl_pp_entersub(aTHX); /* this does */
1845 /* Eval a string. The G_EVAL flag is always assumed. */
1848 =for apidoc p||eval_sv
1850 Tells Perl to C<eval> the string in the SV.
1856 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1858 /* See G_* flags in cop.h */
1861 UNOP myop; /* fake syntax tree node */
1862 I32 oldmark = SP - PL_stack_base;
1869 if (flags & G_DISCARD) {
1876 Zero(PL_op, 1, UNOP);
1877 EXTEND(PL_stack_sp, 1);
1878 *++PL_stack_sp = sv;
1879 oldscope = PL_scopestack_ix;
1881 if (!(flags & G_NOARGS))
1882 myop.op_flags = OPf_STACKED;
1883 myop.op_next = Nullop;
1884 myop.op_type = OP_ENTEREVAL;
1885 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1886 (flags & G_ARRAY) ? OPf_WANT_LIST :
1888 if (flags & G_KEEPERR)
1889 myop.op_flags |= OPf_SPECIAL;
1891 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1893 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1900 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1902 call_body((OP*)&myop,TRUE);
1904 retval = PL_stack_sp - (PL_stack_base + oldmark);
1905 if (!(flags & G_KEEPERR))
1912 /* my_exit() was called */
1913 PL_curstash = PL_defstash;
1916 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1917 Perl_croak(aTHX_ "Callback called exit");
1922 PL_op = PL_restartop;
1926 PL_stack_sp = PL_stack_base + oldmark;
1927 if (flags & G_ARRAY)
1931 *++PL_stack_sp = &PL_sv_undef;
1937 if (flags & G_DISCARD) {
1938 PL_stack_sp = PL_stack_base + oldmark;
1948 =for apidoc p||eval_pv
1950 Tells Perl to C<eval> the given string and return an SV* result.
1956 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1959 SV* sv = newSVpv(p, 0);
1961 eval_sv(sv, G_SCALAR);
1968 if (croak_on_error && SvTRUE(ERRSV)) {
1970 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1976 /* Require a module. */
1979 =for apidoc p||require_pv
1981 Tells Perl to C<require> a module.
1987 Perl_require_pv(pTHX_ const char *pv)
1991 PUSHSTACKi(PERLSI_REQUIRE);
1993 sv = sv_newmortal();
1994 sv_setpv(sv, "require '");
1997 eval_sv(sv, G_DISCARD);
2003 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2007 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2008 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
2012 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2014 /* This message really ought to be max 23 lines.
2015 * Removed -h because the user already knows that opton. Others? */
2017 static char *usage_msg[] = {
2018 "-0[octal] specify record separator (\\0, if no argument)",
2019 "-a autosplit mode with -n or -p (splits $_ into @F)",
2020 "-C enable native wide character system interfaces",
2021 "-c check syntax only (runs BEGIN and CHECK blocks)",
2022 "-d[:debugger] run program under debugger",
2023 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2024 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2025 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2026 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2027 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2028 "-l[octal] enable line ending processing, specifies line terminator",
2029 "-[mM][-]module execute `use/no module...' before executing program",
2030 "-n assume 'while (<>) { ... }' loop around program",
2031 "-p assume loop like -n but print line also, like sed",
2032 "-P run program through C preprocessor before compilation",
2033 "-s enable rudimentary parsing for switches after programfile",
2034 "-S look for programfile using PATH environment variable",
2035 "-T enable tainting checks",
2036 "-u dump core after parsing program",
2037 "-U allow unsafe operations",
2038 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2039 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2040 "-w enable many useful warnings (RECOMMENDED)",
2041 "-W enable all warnings",
2042 "-X disable all warnings",
2043 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2047 char **p = usage_msg;
2049 PerlIO_printf(PerlIO_stdout(),
2050 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2053 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2056 /* This routine handles any switches that can be given during run */
2059 Perl_moreswitches(pTHX_ char *s)
2067 numlen = 0; /* disallow underscores */
2068 rschar = (U32)scan_oct(s, 4, &numlen);
2069 SvREFCNT_dec(PL_nrs);
2070 if (rschar & ~((U8)~0))
2071 PL_nrs = &PL_sv_undef;
2072 else if (!rschar && numlen >= 2)
2073 PL_nrs = newSVpvn("", 0);
2076 PL_nrs = newSVpvn(&ch, 1);
2081 PL_widesyscalls = TRUE;
2086 PL_splitstr = savepv(s + 1);
2100 /* The following permits -d:Mod to accepts arguments following an =
2101 in the fashion that -MSome::Mod does. */
2102 if (*s == ':' || *s == '=') {
2105 sv = newSVpv("use Devel::", 0);
2107 /* We now allow -d:Module=Foo,Bar */
2108 while(isALNUM(*s) || *s==':') ++s;
2110 sv_catpv(sv, start);
2112 sv_catpvn(sv, start, s-start);
2113 sv_catpv(sv, " split(/,/,q{");
2118 my_setenv("PERL5DB", SvPV(sv, PL_na));
2121 PL_perldb = PERLDB_ALL;
2129 if (isALPHA(s[1])) {
2130 /* if adding extra options, remember to update DEBUG_MASK */
2131 static char debopts[] = "psltocPmfrxuLHXDSTR";
2134 for (s++; *s && (d = strchr(debopts,*s)); s++)
2135 PL_debug |= 1 << (d - debopts);
2138 PL_debug = atoi(s+1);
2139 for (s++; isDIGIT(*s); s++) ;
2141 PL_debug |= DEBUG_TOP_FLAG;
2143 if (ckWARN_d(WARN_DEBUGGING))
2144 Perl_warner(aTHX_ WARN_DEBUGGING,
2145 "Recompile perl with -DDEBUGGING to use -D switch\n");
2146 for (s++; isALNUM(*s); s++) ;
2152 usage(PL_origargv[0]);
2156 Safefree(PL_inplace);
2157 PL_inplace = savepv(s+1);
2159 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2162 if (*s == '-') /* Additional switches on #! line. */
2166 case 'I': /* -I handled both here and in parse_perl() */
2169 while (*s && isSPACE(*s))
2174 /* ignore trailing spaces (possibly followed by other switches) */
2176 for (e = p; *e && !isSPACE(*e); e++) ;
2180 } while (*p && *p != '-');
2181 e = savepvn(s, e-s);
2182 incpush(e, TRUE, TRUE);
2189 Perl_croak(aTHX_ "No directory specified for -I");
2195 SvREFCNT_dec(PL_ors_sv);
2199 PL_ors_sv = newSVpvn("\n",1);
2200 numlen = 0; /* disallow underscores */
2201 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2205 if (RsPARA(PL_nrs)) {
2206 PL_ors_sv = newSVpvn("\n\n",2);
2209 PL_ors_sv = newSVsv(PL_nrs);
2214 forbid_setid("-M"); /* XXX ? */
2217 forbid_setid("-m"); /* XXX ? */
2222 /* -M-foo == 'no foo' */
2223 if (*s == '-') { use = "no "; ++s; }
2224 sv = newSVpv(use,0);
2226 /* We allow -M'Module qw(Foo Bar)' */
2227 while(isALNUM(*s) || *s==':') ++s;
2229 sv_catpv(sv, start);
2230 if (*(start-1) == 'm') {
2232 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2233 sv_catpv( sv, " ()");
2237 Perl_croak(aTHX_ "Module name required with -%c option",
2239 sv_catpvn(sv, start, s-start);
2240 sv_catpv(sv, " split(/,/,q{");
2246 PL_preambleav = newAV();
2247 av_push(PL_preambleav, sv);
2250 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2262 PL_doswitches = TRUE;
2267 Perl_croak(aTHX_ "Too late for \"-T\" option");
2271 #ifdef MACOS_TRADITIONAL
2272 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2274 PL_do_undump = TRUE;
2282 PerlIO_printf(PerlIO_stdout(),
2283 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2284 PL_patchlevel, ARCHNAME));
2285 #if defined(LOCAL_PATCH_COUNT)
2286 if (LOCAL_PATCH_COUNT > 0)
2287 PerlIO_printf(PerlIO_stdout(),
2288 "\n(with %d registered patch%s, "
2289 "see perl -V for more detail)",
2290 (int)LOCAL_PATCH_COUNT,
2291 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2294 PerlIO_printf(PerlIO_stdout(),
2295 "\n\nCopyright 1987-2001, Larry Wall\n");
2296 #ifdef MACOS_TRADITIONAL
2297 PerlIO_printf(PerlIO_stdout(),
2298 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2301 PerlIO_printf(PerlIO_stdout(),
2302 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2305 PerlIO_printf(PerlIO_stdout(),
2306 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2307 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2310 PerlIO_printf(PerlIO_stdout(),
2311 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2312 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2315 PerlIO_printf(PerlIO_stdout(),
2316 "atariST series port, ++jrb bammi@cadence.com\n");
2319 PerlIO_printf(PerlIO_stdout(),
2320 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2323 PerlIO_printf(PerlIO_stdout(),
2324 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2327 PerlIO_printf(PerlIO_stdout(),
2328 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2331 PerlIO_printf(PerlIO_stdout(),
2332 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2335 PerlIO_printf(PerlIO_stdout(),
2336 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2339 PerlIO_printf(PerlIO_stdout(),
2340 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2343 PerlIO_printf(PerlIO_stdout(),
2344 "MiNT port by Guido Flohr, 1997-1999\n");
2347 PerlIO_printf(PerlIO_stdout(),
2348 "EPOC port by Olaf Flebbe, 1999-2000\n");
2350 #ifdef BINARY_BUILD_NOTICE
2351 BINARY_BUILD_NOTICE;
2353 PerlIO_printf(PerlIO_stdout(),
2355 Perl may be copied only under the terms of either the Artistic License or the\n\
2356 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2357 Complete documentation for Perl, including FAQ lists, should be found on\n\
2358 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2359 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2362 if (! (PL_dowarn & G_WARN_ALL_MASK))
2363 PL_dowarn |= G_WARN_ON;
2367 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2368 PL_compiling.cop_warnings = pWARN_ALL ;
2372 PL_dowarn = G_WARN_ALL_OFF;
2373 PL_compiling.cop_warnings = pWARN_NONE ;
2378 if (s[1] == '-') /* Additional switches on #! line. */
2383 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2389 #ifdef ALTERNATE_SHEBANG
2390 case 'S': /* OS/2 needs -S on "extproc" line. */
2398 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2403 /* compliments of Tom Christiansen */
2405 /* unexec() can be found in the Gnu emacs distribution */
2406 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2409 Perl_my_unexec(pTHX)
2417 prog = newSVpv(BIN_EXP, 0);
2418 sv_catpv(prog, "/perl");
2419 file = newSVpv(PL_origfilename, 0);
2420 sv_catpv(file, ".perldump");
2422 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2423 /* unexec prints msg to stderr in case of failure */
2424 PerlProc_exit(status);
2427 # include <lib$routines.h>
2428 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2430 ABORT(); /* for use with undump */
2435 /* initialize curinterp */
2440 #ifdef PERL_OBJECT /* XXX kludge */
2443 PL_chopset = " \n-"; \
2444 PL_copline = NOLINE; \
2445 PL_curcop = &PL_compiling;\
2446 PL_curcopdb = NULL; \
2448 PL_dumpindent = 4; \
2449 PL_laststatval = -1; \
2450 PL_laststype = OP_STAT; \
2451 PL_maxscream = -1; \
2452 PL_maxsysfd = MAXSYSFD; \
2453 PL_statname = Nullsv; \
2454 PL_tmps_floor = -1; \
2456 PL_op_mask = NULL; \
2457 PL_laststatval = -1; \
2458 PL_laststype = OP_STAT; \
2459 PL_mess_sv = Nullsv; \
2460 PL_splitstr = " "; \
2461 PL_generation = 100; \
2462 PL_exitlist = NULL; \
2463 PL_exitlistlen = 0; \
2465 PL_in_clean_objs = FALSE; \
2466 PL_in_clean_all = FALSE; \
2467 PL_profiledata = NULL; \
2469 PL_rsfp_filters = Nullav; \
2474 # ifdef MULTIPLICITY
2475 # define PERLVAR(var,type)
2476 # define PERLVARA(var,n,type)
2477 # if defined(PERL_IMPLICIT_CONTEXT)
2478 # if defined(USE_THREADS)
2479 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2480 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2481 # else /* !USE_THREADS */
2482 # define PERLVARI(var,type,init) aTHX->var = init;
2483 # define PERLVARIC(var,type,init) aTHX->var = init;
2484 # endif /* USE_THREADS */
2486 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2487 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2489 # include "intrpvar.h"
2490 # ifndef USE_THREADS
2491 # include "thrdvar.h"
2498 # define PERLVAR(var,type)
2499 # define PERLVARA(var,n,type)
2500 # define PERLVARI(var,type,init) PL_##var = init;
2501 # define PERLVARIC(var,type,init) PL_##var = init;
2502 # include "intrpvar.h"
2503 # ifndef USE_THREADS
2504 # include "thrdvar.h"
2516 S_init_main_stash(pTHX)
2520 /* Note that strtab is a rather special HV. Assumptions are made
2521 about not iterating on it, and not adding tie magic to it.
2522 It is properly deallocated in perl_destruct() */
2523 PL_strtab = newHV();
2525 MUTEX_INIT(&PL_strtab_mutex);
2527 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2528 hv_ksplit(PL_strtab, 512);
2530 PL_curstash = PL_defstash = newHV();
2531 PL_curstname = newSVpvn("main",4);
2532 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2533 SvREFCNT_dec(GvHV(gv));
2534 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2536 HvNAME(PL_defstash) = savepv("main");
2537 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2538 GvMULTI_on(PL_incgv);
2539 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2540 GvMULTI_on(PL_hintgv);
2541 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2542 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2543 GvMULTI_on(PL_errgv);
2544 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2545 GvMULTI_on(PL_replgv);
2546 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2547 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2548 sv_setpvn(ERRSV, "", 0);
2549 PL_curstash = PL_defstash;
2550 CopSTASH_set(&PL_compiling, PL_defstash);
2551 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2552 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2553 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2554 /* We must init $/ before switches are processed. */
2555 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2559 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2564 PL_origfilename = savepv("-e");
2567 /* if find_script() returns, it returns a malloc()-ed value */
2568 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2570 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2571 char *s = scriptname + 8;
2572 *fdscript = atoi(s);
2576 scriptname = savepv(s + 1);
2577 Safefree(PL_origfilename);
2578 PL_origfilename = scriptname;
2584 Safefree(CopFILE(PL_curcop));
2586 SvREFCNT_dec(CopFILEGV(PL_curcop));
2588 CopFILE_set(PL_curcop, PL_origfilename);
2589 if (strEQ(PL_origfilename,"-"))
2591 if (*fdscript >= 0) {
2592 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2593 #if defined(HAS_FCNTL) && defined(F_SETFD)
2595 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2598 else if (PL_preprocess) {
2599 char *cpp_cfg = CPPSTDIN;
2600 SV *cpp = newSVpvn("",0);
2601 SV *cmd = NEWSV(0,0);
2603 if (strEQ(cpp_cfg, "cppstdin"))
2604 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2605 sv_catpv(cpp, cpp_cfg);
2607 sv_catpvn(sv, "-I", 2);
2608 sv_catpv(sv,PRIVLIB_EXP);
2610 #if defined(MSDOS) || defined(WIN32)
2611 Perl_sv_setpvf(aTHX_ cmd, "\
2612 sed %s -e \"/^[^#]/b\" \
2613 -e \"/^#[ ]*include[ ]/b\" \
2614 -e \"/^#[ ]*define[ ]/b\" \
2615 -e \"/^#[ ]*if[ ]/b\" \
2616 -e \"/^#[ ]*ifdef[ ]/b\" \
2617 -e \"/^#[ ]*ifndef[ ]/b\" \
2618 -e \"/^#[ ]*else/b\" \
2619 -e \"/^#[ ]*elif[ ]/b\" \
2620 -e \"/^#[ ]*undef[ ]/b\" \
2621 -e \"/^#[ ]*endif/b\" \
2623 %s | %"SVf" -C %"SVf" %s",
2624 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2627 Perl_sv_setpvf(aTHX_ cmd, "\
2628 %s %s -e '/^[^#]/b' \
2629 -e '/^#[ ]*include[ ]/b' \
2630 -e '/^#[ ]*define[ ]/b' \
2631 -e '/^#[ ]*if[ ]/b' \
2632 -e '/^#[ ]*ifdef[ ]/b' \
2633 -e '/^#[ ]*ifndef[ ]/b' \
2634 -e '/^#[ ]*else/b' \
2635 -e '/^#[ ]*elif[ ]/b' \
2636 -e '/^#[ ]*undef[ ]/b' \
2637 -e '/^#[ ]*endif/b' \
2639 %s | %"SVf" %"SVf" %s",
2641 Perl_sv_setpvf(aTHX_ cmd, "\
2642 %s %s -e '/^[^#]/b' \
2643 -e '/^#[ ]*include[ ]/b' \
2644 -e '/^#[ ]*define[ ]/b' \
2645 -e '/^#[ ]*if[ ]/b' \
2646 -e '/^#[ ]*ifdef[ ]/b' \
2647 -e '/^#[ ]*ifndef[ ]/b' \
2648 -e '/^#[ ]*else/b' \
2649 -e '/^#[ ]*elif[ ]/b' \
2650 -e '/^#[ ]*undef[ ]/b' \
2651 -e '/^#[ ]*endif/b' \
2653 %s | %"SVf" -C %"SVf" %s",
2660 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2662 scriptname, cpp, sv, CPPMINUS);
2663 PL_doextract = FALSE;
2664 #ifdef IAMSUID /* actually, this is caught earlier */
2665 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2667 (void)seteuid(PL_uid); /* musn't stay setuid root */
2670 (void)setreuid((Uid_t)-1, PL_uid);
2672 #ifdef HAS_SETRESUID
2673 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2675 PerlProc_setuid(PL_uid);
2679 if (PerlProc_geteuid() != PL_uid)
2680 Perl_croak(aTHX_ "Can't do seteuid!\n");
2682 #endif /* IAMSUID */
2683 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2687 else if (!*scriptname) {
2688 forbid_setid("program input from stdin");
2689 PL_rsfp = PerlIO_stdin();
2692 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2693 #if defined(HAS_FCNTL) && defined(F_SETFD)
2695 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2700 #ifndef IAMSUID /* in case script is not readable before setuid */
2702 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2703 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2706 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2707 (int)PERL_REVISION, (int)PERL_VERSION,
2708 (int)PERL_SUBVERSION), PL_origargv);
2709 Perl_croak(aTHX_ "Can't do setuid\n");
2713 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2714 CopFILE(PL_curcop), Strerror(errno));
2719 * I_SYSSTATVFS HAS_FSTATVFS
2721 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2722 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2723 * here so that metaconfig picks them up. */
2727 S_fd_on_nosuid_fs(pTHX_ int fd)
2729 int check_okay = 0; /* able to do all the required sys/libcalls */
2730 int on_nosuid = 0; /* the fd is on a nosuid fs */
2732 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2733 * fstatvfs() is UNIX98.
2734 * fstatfs() is 4.3 BSD.
2735 * ustat()+getmnt() is pre-4.3 BSD.
2736 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2737 * an irrelevant filesystem while trying to reach the right one.
2740 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2742 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2743 defined(HAS_FSTATVFS)
2744 # define FD_ON_NOSUID_CHECK_OKAY
2745 struct statvfs stfs;
2747 check_okay = fstatvfs(fd, &stfs) == 0;
2748 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2749 # endif /* fstatvfs */
2751 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2752 defined(PERL_MOUNT_NOSUID) && \
2753 defined(HAS_FSTATFS) && \
2754 defined(HAS_STRUCT_STATFS) && \
2755 defined(HAS_STRUCT_STATFS_F_FLAGS)
2756 # define FD_ON_NOSUID_CHECK_OKAY
2759 check_okay = fstatfs(fd, &stfs) == 0;
2760 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2761 # endif /* fstatfs */
2763 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2764 defined(PERL_MOUNT_NOSUID) && \
2765 defined(HAS_FSTAT) && \
2766 defined(HAS_USTAT) && \
2767 defined(HAS_GETMNT) && \
2768 defined(HAS_STRUCT_FS_DATA) && \
2770 # define FD_ON_NOSUID_CHECK_OKAY
2773 if (fstat(fd, &fdst) == 0) {
2775 if (ustat(fdst.st_dev, &us) == 0) {
2777 /* NOSTAT_ONE here because we're not examining fields which
2778 * vary between that case and STAT_ONE. */
2779 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2780 size_t cmplen = sizeof(us.f_fname);
2781 if (sizeof(fsd.fd_req.path) < cmplen)
2782 cmplen = sizeof(fsd.fd_req.path);
2783 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2784 fdst.st_dev == fsd.fd_req.dev) {
2786 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2792 # endif /* fstat+ustat+getmnt */
2794 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2795 defined(HAS_GETMNTENT) && \
2796 defined(HAS_HASMNTOPT) && \
2797 defined(MNTOPT_NOSUID)
2798 # define FD_ON_NOSUID_CHECK_OKAY
2799 FILE *mtab = fopen("/etc/mtab", "r");
2800 struct mntent *entry;
2801 struct stat stb, fsb;
2803 if (mtab && (fstat(fd, &stb) == 0)) {
2804 while (entry = getmntent(mtab)) {
2805 if (stat(entry->mnt_dir, &fsb) == 0
2806 && fsb.st_dev == stb.st_dev)
2808 /* found the filesystem */
2810 if (hasmntopt(entry, MNTOPT_NOSUID))
2813 } /* A single fs may well fail its stat(). */
2818 # endif /* getmntent+hasmntopt */
2821 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2824 #endif /* IAMSUID */
2827 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2833 /* do we need to emulate setuid on scripts? */
2835 /* This code is for those BSD systems that have setuid #! scripts disabled
2836 * in the kernel because of a security problem. Merely defining DOSUID
2837 * in perl will not fix that problem, but if you have disabled setuid
2838 * scripts in the kernel, this will attempt to emulate setuid and setgid
2839 * on scripts that have those now-otherwise-useless bits set. The setuid
2840 * root version must be called suidperl or sperlN.NNN. If regular perl
2841 * discovers that it has opened a setuid script, it calls suidperl with
2842 * the same argv that it had. If suidperl finds that the script it has
2843 * just opened is NOT setuid root, it sets the effective uid back to the
2844 * uid. We don't just make perl setuid root because that loses the
2845 * effective uid we had before invoking perl, if it was different from the
2848 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2849 * be defined in suidperl only. suidperl must be setuid root. The
2850 * Configure script will set this up for you if you want it.
2856 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2857 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2858 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2863 #ifndef HAS_SETREUID
2864 /* On this access check to make sure the directories are readable,
2865 * there is actually a small window that the user could use to make
2866 * filename point to an accessible directory. So there is a faint
2867 * chance that someone could execute a setuid script down in a
2868 * non-accessible directory. I don't know what to do about that.
2869 * But I don't think it's too important. The manual lies when
2870 * it says access() is useful in setuid programs.
2872 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2873 Perl_croak(aTHX_ "Permission denied");
2875 /* If we can swap euid and uid, then we can determine access rights
2876 * with a simple stat of the file, and then compare device and
2877 * inode to make sure we did stat() on the same file we opened.
2878 * Then we just have to make sure he or she can execute it.
2881 struct stat tmpstatbuf;
2885 setreuid(PL_euid,PL_uid) < 0
2888 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2891 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2892 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2893 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2894 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2895 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2896 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2897 Perl_croak(aTHX_ "Permission denied");
2899 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2900 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2901 (void)PerlIO_close(PL_rsfp);
2902 Perl_croak(aTHX_ "Permission denied\n");
2906 setreuid(PL_uid,PL_euid) < 0
2908 # if defined(HAS_SETRESUID)
2909 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2912 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2913 Perl_croak(aTHX_ "Can't reswap uid and euid");
2914 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2915 Perl_croak(aTHX_ "Permission denied\n");
2917 #endif /* HAS_SETREUID */
2918 #endif /* IAMSUID */
2920 if (!S_ISREG(PL_statbuf.st_mode))
2921 Perl_croak(aTHX_ "Permission denied");
2922 if (PL_statbuf.st_mode & S_IWOTH)
2923 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2924 PL_doswitches = FALSE; /* -s is insecure in suid */
2925 CopLINE_inc(PL_curcop);
2926 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2927 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2928 Perl_croak(aTHX_ "No #! line");
2929 s = SvPV(PL_linestr,n_a)+2;
2931 while (!isSPACE(*s)) s++;
2932 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2933 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2934 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2935 Perl_croak(aTHX_ "Not a perl script");
2936 while (*s == ' ' || *s == '\t') s++;
2938 * #! arg must be what we saw above. They can invoke it by
2939 * mentioning suidperl explicitly, but they may not add any strange
2940 * arguments beyond what #! says if they do invoke suidperl that way.
2942 len = strlen(validarg);
2943 if (strEQ(validarg," PHOOEY ") ||
2944 strnNE(s,validarg,len) || !isSPACE(s[len]))
2945 Perl_croak(aTHX_ "Args must match #! line");
2948 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2949 PL_euid == PL_statbuf.st_uid)
2951 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2952 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2953 #endif /* IAMSUID */
2955 if (PL_euid) { /* oops, we're not the setuid root perl */
2956 (void)PerlIO_close(PL_rsfp);
2959 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2960 (int)PERL_REVISION, (int)PERL_VERSION,
2961 (int)PERL_SUBVERSION), PL_origargv);
2963 Perl_croak(aTHX_ "Can't do setuid\n");
2966 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2968 (void)setegid(PL_statbuf.st_gid);
2971 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2973 #ifdef HAS_SETRESGID
2974 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2976 PerlProc_setgid(PL_statbuf.st_gid);
2980 if (PerlProc_getegid() != PL_statbuf.st_gid)
2981 Perl_croak(aTHX_ "Can't do setegid!\n");
2983 if (PL_statbuf.st_mode & S_ISUID) {
2984 if (PL_statbuf.st_uid != PL_euid)
2986 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2989 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2991 #ifdef HAS_SETRESUID
2992 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2994 PerlProc_setuid(PL_statbuf.st_uid);
2998 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2999 Perl_croak(aTHX_ "Can't do seteuid!\n");
3001 else if (PL_uid) { /* oops, mustn't run as root */
3003 (void)seteuid((Uid_t)PL_uid);
3006 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3008 #ifdef HAS_SETRESUID
3009 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3011 PerlProc_setuid((Uid_t)PL_uid);
3015 if (PerlProc_geteuid() != PL_uid)
3016 Perl_croak(aTHX_ "Can't do seteuid!\n");
3019 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3020 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3023 else if (PL_preprocess)
3024 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3025 else if (fdscript >= 0)
3026 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3028 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3030 /* We absolutely must clear out any saved ids here, so we */
3031 /* exec the real perl, substituting fd script for scriptname. */
3032 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3033 PerlIO_rewind(PL_rsfp);
3034 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3035 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3036 if (!PL_origargv[which])
3037 Perl_croak(aTHX_ "Permission denied");
3038 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3039 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3040 #if defined(HAS_FCNTL) && defined(F_SETFD)
3041 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3043 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3044 (int)PERL_REVISION, (int)PERL_VERSION,
3045 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3046 Perl_croak(aTHX_ "Can't do setuid\n");
3047 #endif /* IAMSUID */
3049 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3050 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3051 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3052 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3054 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3057 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3058 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3059 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3060 /* not set-id, must be wrapped */
3066 S_find_beginning(pTHX)
3068 register char *s, *s2;
3070 /* skip forward in input to the real script? */
3073 #ifdef MACOS_TRADITIONAL
3074 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3076 while (PL_doextract || gMacPerl_AlwaysExtract) {
3077 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3078 if (!gMacPerl_AlwaysExtract)
3079 Perl_croak(aTHX_ "No Perl script found in input\n");
3081 if (PL_doextract) /* require explicit override ? */
3082 if (!OverrideExtract(PL_origfilename))
3083 Perl_croak(aTHX_ "User aborted script\n");
3085 PL_doextract = FALSE;
3087 /* Pater peccavi, file does not have #! */
3088 PerlIO_rewind(PL_rsfp);
3093 while (PL_doextract) {
3094 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3095 Perl_croak(aTHX_ "No Perl script found in input\n");
3097 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3098 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3099 PL_doextract = FALSE;
3100 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3102 while (*s == ' ' || *s == '\t') s++;
3104 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3105 if (strnEQ(s2-4,"perl",4))
3107 while ((s = moreswitches(s)))
3118 PL_uid = PerlProc_getuid();
3119 PL_euid = PerlProc_geteuid();
3120 PL_gid = PerlProc_getgid();
3121 PL_egid = PerlProc_getegid();
3123 PL_uid |= PL_gid << 16;
3124 PL_euid |= PL_egid << 16;
3126 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3130 S_forbid_setid(pTHX_ char *s)
3132 if (PL_euid != PL_uid)
3133 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3134 if (PL_egid != PL_gid)
3135 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3139 Perl_init_debugger(pTHX)
3141 HV *ostash = PL_curstash;
3143 PL_curstash = PL_debstash;
3144 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3145 AvREAL_off(PL_dbargs);
3146 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3147 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3148 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3149 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3150 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3151 sv_setiv(PL_DBsingle, 0);
3152 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3153 sv_setiv(PL_DBtrace, 0);
3154 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3155 sv_setiv(PL_DBsignal, 0);
3156 PL_curstash = ostash;
3159 #ifndef STRESS_REALLOC
3160 #define REASONABLE(size) (size)
3162 #define REASONABLE(size) (1) /* unreasonable */
3166 Perl_init_stacks(pTHX)
3168 /* start with 128-item stack and 8K cxstack */
3169 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3170 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3171 PL_curstackinfo->si_type = PERLSI_MAIN;
3172 PL_curstack = PL_curstackinfo->si_stack;
3173 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3175 PL_stack_base = AvARRAY(PL_curstack);
3176 PL_stack_sp = PL_stack_base;
3177 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3179 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3182 PL_tmps_max = REASONABLE(128);
3184 New(54,PL_markstack,REASONABLE(32),I32);
3185 PL_markstack_ptr = PL_markstack;
3186 PL_markstack_max = PL_markstack + REASONABLE(32);
3190 New(54,PL_scopestack,REASONABLE(32),I32);
3191 PL_scopestack_ix = 0;
3192 PL_scopestack_max = REASONABLE(32);
3194 New(54,PL_savestack,REASONABLE(128),ANY);
3195 PL_savestack_ix = 0;
3196 PL_savestack_max = REASONABLE(128);
3198 New(54,PL_retstack,REASONABLE(16),OP*);
3200 PL_retstack_max = REASONABLE(16);
3208 while (PL_curstackinfo->si_next)
3209 PL_curstackinfo = PL_curstackinfo->si_next;
3210 while (PL_curstackinfo) {
3211 PERL_SI *p = PL_curstackinfo->si_prev;
3212 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3213 Safefree(PL_curstackinfo->si_cxstack);
3214 Safefree(PL_curstackinfo);
3215 PL_curstackinfo = p;
3217 Safefree(PL_tmps_stack);
3218 Safefree(PL_markstack);
3219 Safefree(PL_scopestack);
3220 Safefree(PL_savestack);
3221 Safefree(PL_retstack);
3225 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3236 lex_start(PL_linestr);
3238 PL_subname = newSVpvn("main",4);
3242 S_init_predump_symbols(pTHX)
3247 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3248 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3249 GvMULTI_on(PL_stdingv);
3250 io = GvIOp(PL_stdingv);
3251 IoIFP(io) = PerlIO_stdin();
3252 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3254 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3256 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3259 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3261 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3263 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3265 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3266 GvMULTI_on(PL_stderrgv);
3267 io = GvIOp(PL_stderrgv);
3268 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3269 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3271 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3273 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3276 Safefree(PL_osname);
3277 PL_osname = savepv(OSNAME);
3281 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3286 char **dup_env_base = 0;
3287 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3288 int dup_env_count = 0;
3291 argc--,argv++; /* skip name of script */
3292 if (PL_doswitches) {
3293 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3296 if (argv[0][1] == '-' && !argv[0][2]) {
3300 if ((s = strchr(argv[0], '='))) {
3302 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3305 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3308 PL_toptarget = NEWSV(0,0);
3309 sv_upgrade(PL_toptarget, SVt_PVFM);
3310 sv_setpvn(PL_toptarget, "", 0);
3311 PL_bodytarget = NEWSV(0,0);
3312 sv_upgrade(PL_bodytarget, SVt_PVFM);
3313 sv_setpvn(PL_bodytarget, "", 0);
3314 PL_formtarget = PL_bodytarget;
3317 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3318 #ifdef MACOS_TRADITIONAL
3319 /* $0 is not majick on a Mac */
3320 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3322 sv_setpv(GvSV(tmpgv),PL_origfilename);
3323 magicname("0", "0", 1);
3326 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3328 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3330 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3332 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3333 GvMULTI_on(PL_argvgv);
3334 (void)gv_AVadd(PL_argvgv);
3335 av_clear(GvAVn(PL_argvgv));
3336 for (; argc > 0; argc--,argv++) {
3337 SV *sv = newSVpv(argv[0],0);
3338 av_push(GvAVn(PL_argvgv),sv);
3339 if (PL_widesyscalls)
3340 (void)sv_utf8_decode(sv);
3343 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3345 GvMULTI_on(PL_envgv);
3346 hv = GvHVn(PL_envgv);
3347 hv_magic(hv, Nullgv, 'E');
3348 #ifdef USE_ENVIRON_ARRAY
3349 /* Note that if the supplied env parameter is actually a copy
3350 of the global environ then it may now point to free'd memory
3351 if the environment has been modified since. To avoid this
3352 problem we treat env==NULL as meaning 'use the default'
3357 environ[0] = Nullch;
3358 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3361 for (env_base = env; *env; env++)
3363 if ((dup_env_base = (char **)
3364 safesysmalloc( sizeof(char *) * (dup_env_count+1) ))) {
3366 for (env = env_base, dup_env = dup_env_base;
3369 /* With environ one needs to use safesysmalloc(). */
3370 *dup_env = safesysmalloc(strlen(*env) + 1);
3371 (void)strcpy(*dup_env, *env);
3377 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3378 for (; *env; env++) {
3379 if (!(s = strchr(*env,'=')))
3385 sv = newSVpv(s--,0);
3386 (void)hv_store(hv, *env, s - *env, sv, 0);
3389 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3392 for (dup_env = dup_env_base; *dup_env; dup_env++)
3393 safesysfree(*dup_env);
3394 safesysfree(dup_env_base);
3396 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3397 #endif /* USE_ENVIRON_ARRAY */
3398 #ifdef DYNAMIC_ENV_FETCH
3399 HvNAME(hv) = savepv(ENV_HV_NAME);
3403 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3404 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3408 S_init_perllib(pTHX)
3413 s = PerlEnv_getenv("PERL5LIB");
3415 incpush(s, TRUE, TRUE);
3417 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3419 /* Treat PERL5?LIB as a possible search list logical name -- the
3420 * "natural" VMS idiom for a Unix path string. We allow each
3421 * element to be a set of |-separated directories for compatibility.
3425 if (my_trnlnm("PERL5LIB",buf,0))
3426 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3428 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3432 /* Use the ~-expanded versions of APPLLIB (undocumented),
3433 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3436 incpush(APPLLIB_EXP, TRUE, TRUE);
3440 incpush(ARCHLIB_EXP, FALSE, FALSE);
3442 #ifdef MACOS_TRADITIONAL
3444 struct stat tmpstatbuf;
3445 SV * privdir = NEWSV(55, 0);
3446 char * macperl = PerlEnv_getenv("MACPERL");
3451 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3452 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3453 incpush(SvPVX(privdir), TRUE, FALSE);
3454 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3455 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3456 incpush(SvPVX(privdir), TRUE, FALSE);
3458 SvREFCNT_dec(privdir);
3461 incpush(":", FALSE, FALSE);
3464 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3467 incpush(PRIVLIB_EXP, TRUE, FALSE);
3469 incpush(PRIVLIB_EXP, FALSE, FALSE);
3473 /* sitearch is always relative to sitelib on Windows for
3474 * DLL-based path intuition to work correctly */
3475 # if !defined(WIN32)
3476 incpush(SITEARCH_EXP, FALSE, FALSE);
3482 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3484 incpush(SITELIB_EXP, FALSE, FALSE);
3488 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3489 incpush(SITELIB_STEM, FALSE, TRUE);
3492 #ifdef PERL_VENDORARCH_EXP
3493 /* vendorarch is always relative to vendorlib on Windows for
3494 * DLL-based path intuition to work correctly */
3495 # if !defined(WIN32)
3496 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3500 #ifdef PERL_VENDORLIB_EXP
3502 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3504 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3508 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3509 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3512 #ifdef PERL_OTHERLIBDIRS
3513 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3517 incpush(".", FALSE, FALSE);
3518 #endif /* MACOS_TRADITIONAL */
3521 #if defined(DOSISH) || defined(EPOC)
3522 # define PERLLIB_SEP ';'
3525 # define PERLLIB_SEP '|'
3527 # if defined(MACOS_TRADITIONAL)
3528 # define PERLLIB_SEP ','
3530 # define PERLLIB_SEP ':'
3534 #ifndef PERLLIB_MANGLE
3535 # define PERLLIB_MANGLE(s,n) (s)
3539 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3541 SV *subdir = Nullsv;
3546 if (addsubdirs || addoldvers) {
3547 subdir = sv_newmortal();
3550 /* Break at all separators */
3552 SV *libdir = NEWSV(55,0);
3555 /* skip any consecutive separators */
3556 while ( *p == PERLLIB_SEP ) {
3557 /* Uncomment the next line for PATH semantics */
3558 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3562 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3563 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3568 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3569 p = Nullch; /* break out */
3571 #ifdef MACOS_TRADITIONAL
3572 if (!strchr(SvPVX(libdir), ':'))
3573 sv_insert(libdir, 0, 0, ":", 1);
3574 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3575 sv_catpv(libdir, ":");
3579 * BEFORE pushing libdir onto @INC we may first push version- and
3580 * archname-specific sub-directories.
3582 if (addsubdirs || addoldvers) {
3583 #ifdef PERL_INC_VERSION_LIST
3584 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3585 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3586 const char **incver;
3588 struct stat tmpstatbuf;
3593 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3595 while (unix[len-1] == '/') len--; /* Cosmetic */
3596 sv_usepvn(libdir,unix,len);
3599 PerlIO_printf(Perl_error_log,
3600 "Failed to unixify @INC element \"%s\"\n",
3604 #ifdef MACOS_TRADITIONAL
3605 #define PERL_AV_SUFFIX_FMT ""
3606 #define PERL_ARCH_FMT "%s:"
3607 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3609 #define PERL_AV_SUFFIX_FMT "/"
3610 #define PERL_ARCH_FMT "/%s"
3611 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3613 /* .../version/archname if -d .../version/archname */
3614 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3616 (int)PERL_REVISION, (int)PERL_VERSION,
3617 (int)PERL_SUBVERSION, ARCHNAME);
3618 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3619 S_ISDIR(tmpstatbuf.st_mode))
3620 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3622 /* .../version if -d .../version */
3623 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3624 (int)PERL_REVISION, (int)PERL_VERSION,
3625 (int)PERL_SUBVERSION);
3626 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3627 S_ISDIR(tmpstatbuf.st_mode))
3628 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3630 /* .../archname if -d .../archname */
3631 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3632 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3633 S_ISDIR(tmpstatbuf.st_mode))
3634 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3637 #ifdef PERL_INC_VERSION_LIST
3639 for (incver = incverlist; *incver; incver++) {
3640 /* .../xxx if -d .../xxx */
3641 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3642 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3643 S_ISDIR(tmpstatbuf.st_mode))
3644 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3650 /* finally push this lib directory on the end of @INC */
3651 av_push(GvAVn(PL_incgv), libdir);
3656 STATIC struct perl_thread *
3657 S_init_main_thread(pTHX)
3659 #if !defined(PERL_IMPLICIT_CONTEXT)
3660 struct perl_thread *thr;
3664 Newz(53, thr, 1, struct perl_thread);
3665 PL_curcop = &PL_compiling;
3666 thr->interp = PERL_GET_INTERP;
3667 thr->cvcache = newHV();
3668 thr->threadsv = newAV();
3669 /* thr->threadsvp is set when find_threadsv is called */
3670 thr->specific = newAV();
3671 thr->flags = THRf_R_JOINABLE;
3672 MUTEX_INIT(&thr->mutex);
3673 /* Handcraft thrsv similarly to mess_sv */
3674 New(53, PL_thrsv, 1, SV);
3675 Newz(53, xpv, 1, XPV);
3676 SvFLAGS(PL_thrsv) = SVt_PV;
3677 SvANY(PL_thrsv) = (void*)xpv;
3678 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3679 SvPVX(PL_thrsv) = (char*)thr;
3680 SvCUR_set(PL_thrsv, sizeof(thr));
3681 SvLEN_set(PL_thrsv, sizeof(thr));
3682 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3683 thr->oursv = PL_thrsv;
3684 PL_chopset = " \n-";
3687 MUTEX_LOCK(&PL_threads_mutex);
3693 MUTEX_UNLOCK(&PL_threads_mutex);
3695 #ifdef HAVE_THREAD_INTERN
3696 Perl_init_thread_intern(thr);
3699 #ifdef SET_THREAD_SELF
3700 SET_THREAD_SELF(thr);
3702 thr->self = pthread_self();
3703 #endif /* SET_THREAD_SELF */
3707 * These must come after the thread self setting
3708 * because sv_setpvn does SvTAINT and the taint
3709 * fields thread selfness being set.
3711 PL_toptarget = NEWSV(0,0);
3712 sv_upgrade(PL_toptarget, SVt_PVFM);
3713 sv_setpvn(PL_toptarget, "", 0);
3714 PL_bodytarget = NEWSV(0,0);
3715 sv_upgrade(PL_bodytarget, SVt_PVFM);
3716 sv_setpvn(PL_bodytarget, "", 0);
3717 PL_formtarget = PL_bodytarget;
3718 thr->errsv = newSVpvn("", 0);
3719 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3722 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3723 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3724 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3725 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3726 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3728 PL_reginterp_cnt = 0;
3732 #endif /* USE_THREADS */
3735 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3738 line_t oldline = CopLINE(PL_curcop);
3744 while (AvFILL(paramList) >= 0) {
3745 cv = (CV*)av_shift(paramList);
3746 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3747 /* save PL_beginav for compiler */
3748 if (! PL_beginav_save)
3749 PL_beginav_save = newAV();
3750 av_push(PL_beginav_save, (SV*)cv);
3754 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3755 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3761 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3765 (void)SvPV(atsv, len);
3768 PL_curcop = &PL_compiling;
3769 CopLINE_set(PL_curcop, oldline);
3770 if (paramList == PL_beginav)
3771 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3773 Perl_sv_catpvf(aTHX_ atsv,
3774 "%s failed--call queue aborted",
3775 paramList == PL_checkav ? "CHECK"
3776 : paramList == PL_initav ? "INIT"
3778 while (PL_scopestack_ix > oldscope)
3781 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3788 /* my_exit() was called */
3789 while (PL_scopestack_ix > oldscope)
3792 PL_curstash = PL_defstash;
3793 PL_curcop = &PL_compiling;
3794 CopLINE_set(PL_curcop, oldline);
3796 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3797 if (paramList == PL_beginav)
3798 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3800 Perl_croak(aTHX_ "%s failed--call queue aborted",
3801 paramList == PL_checkav ? "CHECK"
3802 : paramList == PL_initav ? "INIT"
3809 PL_curcop = &PL_compiling;
3810 CopLINE_set(PL_curcop, oldline);
3813 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3821 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3823 S_vcall_list_body(pTHX_ va_list args)
3825 CV *cv = va_arg(args, CV*);
3826 return call_list_body(cv);
3831 S_call_list_body(pTHX_ CV *cv)
3833 PUSHMARK(PL_stack_sp);
3834 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3839 Perl_my_exit(pTHX_ U32 status)
3841 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3842 thr, (unsigned long) status));
3851 STATUS_NATIVE_SET(status);
3858 Perl_my_failure_exit(pTHX)
3861 if (vaxc$errno & 1) {
3862 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3863 STATUS_NATIVE_SET(44);
3866 if (!vaxc$errno && errno) /* unlikely */
3867 STATUS_NATIVE_SET(44);
3869 STATUS_NATIVE_SET(vaxc$errno);
3874 STATUS_POSIX_SET(errno);
3876 exitstatus = STATUS_POSIX >> 8;
3877 if (exitstatus & 255)
3878 STATUS_POSIX_SET(exitstatus);
3880 STATUS_POSIX_SET(255);
3887 S_my_exit_jump(pTHX)
3889 register PERL_CONTEXT *cx;
3894 SvREFCNT_dec(PL_e_script);
3895 PL_e_script = Nullsv;
3898 POPSTACK_TO(PL_mainstack);
3899 if (cxstack_ix >= 0) {
3902 POPBLOCK(cx,PL_curpm);
3914 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3917 p = SvPVX(PL_e_script);
3918 nl = strchr(p, '\n');
3919 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3921 filter_del(read_e_script);
3924 sv_catpvn(buf_sv, p, nl-p);
3925 sv_chop(PL_e_script, nl);