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 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>.
301 int destruct_level; /* 0=none, 1=full, 2=full with checks */
307 #endif /* USE_THREADS */
309 /* wait for all pseudo-forked children to finish */
310 PERL_WAIT_FOR_CHILDREN;
314 /* Pass 1 on any remaining threads: detach joinables, join zombies */
316 MUTEX_LOCK(&PL_threads_mutex);
317 DEBUG_S(PerlIO_printf(Perl_debug_log,
318 "perl_destruct: waiting for %d threads...\n",
320 for (t = thr->next; t != thr; t = t->next) {
321 MUTEX_LOCK(&t->mutex);
322 switch (ThrSTATE(t)) {
325 DEBUG_S(PerlIO_printf(Perl_debug_log,
326 "perl_destruct: joining zombie %p\n", t));
327 ThrSETSTATE(t, THRf_DEAD);
328 MUTEX_UNLOCK(&t->mutex);
331 * The SvREFCNT_dec below may take a long time (e.g. av
332 * may contain an object scalar whose destructor gets
333 * called) so we have to unlock threads_mutex and start
336 MUTEX_UNLOCK(&PL_threads_mutex);
338 SvREFCNT_dec((SV*)av);
339 DEBUG_S(PerlIO_printf(Perl_debug_log,
340 "perl_destruct: joined zombie %p OK\n", t));
342 case THRf_R_JOINABLE:
343 DEBUG_S(PerlIO_printf(Perl_debug_log,
344 "perl_destruct: detaching thread %p\n", t));
345 ThrSETSTATE(t, THRf_R_DETACHED);
347 * We unlock threads_mutex and t->mutex in the opposite order
348 * from which we locked them just so that DETACH won't
349 * deadlock if it panics. It's only a breach of good style
350 * not a bug since they are unlocks not locks.
352 MUTEX_UNLOCK(&PL_threads_mutex);
354 MUTEX_UNLOCK(&t->mutex);
357 DEBUG_S(PerlIO_printf(Perl_debug_log,
358 "perl_destruct: ignoring %p (state %u)\n",
360 MUTEX_UNLOCK(&t->mutex);
361 /* fall through and out */
364 /* We leave the above "Pass 1" loop with threads_mutex still locked */
366 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
367 while (PL_nthreads > 1)
369 DEBUG_S(PerlIO_printf(Perl_debug_log,
370 "perl_destruct: final wait for %d threads\n",
372 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
374 /* At this point, we're the last thread */
375 MUTEX_UNLOCK(&PL_threads_mutex);
376 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
377 MUTEX_DESTROY(&PL_threads_mutex);
378 COND_DESTROY(&PL_nthreads_cond);
380 #endif /* !defined(FAKE_THREADS) */
381 #endif /* USE_THREADS */
383 destruct_level = PL_perl_destruct_level;
387 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
389 if (destruct_level < i)
398 /* We must account for everything. */
400 /* Destroy the main CV and syntax tree */
402 PL_curpad = AvARRAY(PL_comppad);
403 op_free(PL_main_root);
404 PL_main_root = Nullop;
406 PL_curcop = &PL_compiling;
407 PL_main_start = Nullop;
408 SvREFCNT_dec(PL_main_cv);
412 if (PL_sv_objcount) {
414 * Try to destruct global references. We do this first so that the
415 * destructors and destructees still exist. Some sv's might remain.
416 * Non-referenced objects are on their own.
421 /* unhook hooks which will soon be, or use, destroyed data */
422 SvREFCNT_dec(PL_warnhook);
423 PL_warnhook = Nullsv;
424 SvREFCNT_dec(PL_diehook);
427 /* call exit list functions */
428 while (PL_exitlistlen-- > 0)
429 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
431 Safefree(PL_exitlist);
433 if (destruct_level == 0){
435 DEBUG_P(debprofdump());
437 /* The exit() function will do everything that needs doing. */
441 /* jettison our possibly duplicated environment */
443 #ifdef USE_ENVIRON_ARRAY
444 if (environ != PL_origenviron) {
447 for (i = 0; environ[i]; i++)
448 Safefree(environ[i]);
451 environ = PL_origenviron;
455 /* loosen bonds of global variables */
458 (void)PerlIO_close(PL_rsfp);
462 /* Filters for program text */
463 SvREFCNT_dec(PL_rsfp_filters);
464 PL_rsfp_filters = Nullav;
467 PL_preprocess = FALSE;
473 PL_doswitches = FALSE;
474 PL_dowarn = G_WARN_OFF;
475 PL_doextract = FALSE;
476 PL_sawampersand = FALSE; /* must save all match strings */
479 Safefree(PL_inplace);
481 SvREFCNT_dec(PL_patchlevel);
484 SvREFCNT_dec(PL_e_script);
485 PL_e_script = Nullsv;
488 /* magical thingies */
490 SvREFCNT_dec(PL_ofs_sv); /* $, */
493 SvREFCNT_dec(PL_ors_sv); /* $\ */
496 SvREFCNT_dec(PL_rs); /* $/ */
499 SvREFCNT_dec(PL_nrs); /* $/ helper */
502 PL_multiline = 0; /* $* */
503 Safefree(PL_osname); /* $^O */
506 SvREFCNT_dec(PL_statname);
507 PL_statname = Nullsv;
510 /* defgv, aka *_ should be taken care of elsewhere */
512 /* clean up after study() */
513 SvREFCNT_dec(PL_lastscream);
514 PL_lastscream = Nullsv;
515 Safefree(PL_screamfirst);
517 Safefree(PL_screamnext);
521 Safefree(PL_efloatbuf);
522 PL_efloatbuf = Nullch;
525 /* startup and shutdown function lists */
526 SvREFCNT_dec(PL_beginav);
527 SvREFCNT_dec(PL_endav);
528 SvREFCNT_dec(PL_checkav);
529 SvREFCNT_dec(PL_initav);
535 /* shortcuts just get cleared */
541 PL_argvoutgv = Nullgv;
543 PL_stderrgv = Nullgv;
544 PL_last_in_gv = Nullgv;
546 PL_debstash = Nullhv;
548 /* reset so print() ends up where we expect */
551 SvREFCNT_dec(PL_argvout_stack);
552 PL_argvout_stack = Nullav;
554 SvREFCNT_dec(PL_modglobal);
555 PL_modglobal = Nullhv;
556 SvREFCNT_dec(PL_preambleav);
557 PL_preambleav = Nullav;
558 SvREFCNT_dec(PL_subname);
560 SvREFCNT_dec(PL_linestr);
562 SvREFCNT_dec(PL_pidstatus);
563 PL_pidstatus = Nullhv;
564 SvREFCNT_dec(PL_toptarget);
565 PL_toptarget = Nullsv;
566 SvREFCNT_dec(PL_bodytarget);
567 PL_bodytarget = Nullsv;
568 PL_formtarget = Nullsv;
570 /* free locale stuff */
571 #ifdef USE_LOCALE_COLLATE
572 Safefree(PL_collation_name);
573 PL_collation_name = Nullch;
576 #ifdef USE_LOCALE_NUMERIC
577 Safefree(PL_numeric_name);
578 PL_numeric_name = Nullch;
579 SvREFCNT_dec(PL_numeric_radix);
582 /* clear utf8 character classes */
583 SvREFCNT_dec(PL_utf8_alnum);
584 SvREFCNT_dec(PL_utf8_alnumc);
585 SvREFCNT_dec(PL_utf8_ascii);
586 SvREFCNT_dec(PL_utf8_alpha);
587 SvREFCNT_dec(PL_utf8_space);
588 SvREFCNT_dec(PL_utf8_cntrl);
589 SvREFCNT_dec(PL_utf8_graph);
590 SvREFCNT_dec(PL_utf8_digit);
591 SvREFCNT_dec(PL_utf8_upper);
592 SvREFCNT_dec(PL_utf8_lower);
593 SvREFCNT_dec(PL_utf8_print);
594 SvREFCNT_dec(PL_utf8_punct);
595 SvREFCNT_dec(PL_utf8_xdigit);
596 SvREFCNT_dec(PL_utf8_mark);
597 SvREFCNT_dec(PL_utf8_toupper);
598 SvREFCNT_dec(PL_utf8_tolower);
599 PL_utf8_alnum = Nullsv;
600 PL_utf8_alnumc = Nullsv;
601 PL_utf8_ascii = Nullsv;
602 PL_utf8_alpha = Nullsv;
603 PL_utf8_space = Nullsv;
604 PL_utf8_cntrl = Nullsv;
605 PL_utf8_graph = Nullsv;
606 PL_utf8_digit = Nullsv;
607 PL_utf8_upper = Nullsv;
608 PL_utf8_lower = Nullsv;
609 PL_utf8_print = Nullsv;
610 PL_utf8_punct = Nullsv;
611 PL_utf8_xdigit = Nullsv;
612 PL_utf8_mark = Nullsv;
613 PL_utf8_toupper = Nullsv;
614 PL_utf8_totitle = Nullsv;
615 PL_utf8_tolower = Nullsv;
617 if (!specialWARN(PL_compiling.cop_warnings))
618 SvREFCNT_dec(PL_compiling.cop_warnings);
619 PL_compiling.cop_warnings = Nullsv;
620 if (!specialCopIO(PL_compiling.cop_io))
621 SvREFCNT_dec(PL_compiling.cop_io);
622 PL_compiling.cop_io = Nullsv;
624 Safefree(CopFILE(&PL_compiling));
625 CopFILE(&PL_compiling) = Nullch;
626 Safefree(CopSTASHPV(&PL_compiling));
628 SvREFCNT_dec(CopFILEGV(&PL_compiling));
629 CopFILEGV(&PL_compiling) = Nullgv;
630 /* cop_stash is not refcounted */
633 /* Prepare to destruct main symbol table. */
638 SvREFCNT_dec(PL_curstname);
639 PL_curstname = Nullsv;
641 /* clear queued errors */
642 SvREFCNT_dec(PL_errors);
646 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
647 if (PL_scopestack_ix != 0)
648 Perl_warner(aTHX_ WARN_INTERNAL,
649 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
650 (long)PL_scopestack_ix);
651 if (PL_savestack_ix != 0)
652 Perl_warner(aTHX_ WARN_INTERNAL,
653 "Unbalanced saves: %ld more saves than restores\n",
654 (long)PL_savestack_ix);
655 if (PL_tmps_floor != -1)
656 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
657 (long)PL_tmps_floor + 1);
658 if (cxstack_ix != -1)
659 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
660 (long)cxstack_ix + 1);
663 /* Now absolutely destruct everything, somehow or other, loops or no. */
665 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
666 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
667 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
668 last_sv_count = PL_sv_count;
671 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
672 SvFLAGS(PL_fdpid) |= SVt_PVAV;
673 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
674 SvFLAGS(PL_strtab) |= SVt_PVHV;
676 AvREAL_off(PL_fdpid); /* no surviving entries */
677 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
680 #ifdef HAVE_INTERP_INTERN
684 /* Destruct the global string table. */
686 /* Yell and reset the HeVAL() slots that are still holding refcounts,
687 * so that sv_free() won't fail on them.
695 max = HvMAX(PL_strtab);
696 array = HvARRAY(PL_strtab);
699 if (hent && ckWARN_d(WARN_INTERNAL)) {
700 Perl_warner(aTHX_ WARN_INTERNAL,
701 "Unbalanced string table refcount: (%d) for \"%s\"",
702 HeVAL(hent) - Nullsv, HeKEY(hent));
703 HeVAL(hent) = Nullsv;
713 SvREFCNT_dec(PL_strtab);
716 /* free the pointer table used for cloning */
717 ptr_table_free(PL_ptr_table);
720 /* free special SVs */
722 SvREFCNT(&PL_sv_yes) = 0;
723 sv_clear(&PL_sv_yes);
724 SvANY(&PL_sv_yes) = NULL;
725 SvFLAGS(&PL_sv_yes) = 0;
727 SvREFCNT(&PL_sv_no) = 0;
729 SvANY(&PL_sv_no) = NULL;
730 SvFLAGS(&PL_sv_no) = 0;
732 SvREFCNT(&PL_sv_undef) = 0;
733 SvREADONLY_off(&PL_sv_undef);
735 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
736 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
738 Safefree(PL_origfilename);
739 Safefree(PL_reg_start_tmp);
741 Safefree(PL_reg_curpm);
742 Safefree(PL_reg_poscache);
743 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
744 Safefree(PL_op_mask);
745 Safefree(PL_psig_ptr);
746 Safefree(PL_psig_name);
747 Safefree(PL_psig_pend);
749 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
751 DEBUG_P(debprofdump());
753 MUTEX_DESTROY(&PL_strtab_mutex);
754 MUTEX_DESTROY(&PL_sv_mutex);
755 MUTEX_DESTROY(&PL_eval_mutex);
756 MUTEX_DESTROY(&PL_cred_mutex);
757 MUTEX_DESTROY(&PL_fdpid_mutex);
758 COND_DESTROY(&PL_eval_cond);
759 #ifdef EMULATE_ATOMIC_REFCOUNTS
760 MUTEX_DESTROY(&PL_svref_mutex);
761 #endif /* EMULATE_ATOMIC_REFCOUNTS */
763 /* As the penultimate thing, free the non-arena SV for thrsv */
764 Safefree(SvPVX(PL_thrsv));
765 Safefree(SvANY(PL_thrsv));
768 #endif /* USE_THREADS */
772 /* As the absolutely last thing, free the non-arena SV for mess() */
775 /* it could have accumulated taint magic */
776 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
779 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
780 moremagic = mg->mg_moremagic;
781 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
782 Safefree(mg->mg_ptr);
786 /* we know that type >= SVt_PV */
787 (void)SvOOK_off(PL_mess_sv);
788 Safefree(SvPVX(PL_mess_sv));
789 Safefree(SvANY(PL_mess_sv));
790 Safefree(PL_mess_sv);
796 =for apidoc perl_free
798 Releases a Perl interpreter. See L<perlembed>.
806 #if defined(PERL_OBJECT)
810 # if defined(PERL_IMPLICIT_SYS)
811 void *host = w32_internal_host;
812 if (PerlProc_lasthost()) {
816 win32_delete_internal_host(host);
828 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
830 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
831 PL_exitlist[PL_exitlistlen].fn = fn;
832 PL_exitlist[PL_exitlistlen].ptr = ptr;
837 =for apidoc perl_parse
839 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
845 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
854 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
857 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
858 setuid perl scripts securely.\n");
862 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
863 _dyld_lookup_and_bind
864 ("__environ", (unsigned long *) &environ_pointer, NULL);
869 #ifdef USE_ENVIRON_ARRAY
870 PL_origenviron = environ;
875 /* Come here if running an undumped a.out. */
877 PL_origfilename = savepv(argv[0]);
878 PL_do_undump = FALSE;
879 cxstack_ix = -1; /* start label stack again */
881 init_postdump_symbols(argc,argv,env);
886 PL_curpad = AvARRAY(PL_comppad);
887 op_free(PL_main_root);
888 PL_main_root = Nullop;
890 PL_main_start = Nullop;
891 SvREFCNT_dec(PL_main_cv);
895 oldscope = PL_scopestack_ix;
896 PL_dowarn = G_WARN_OFF;
898 #ifdef PERL_FLEXIBLE_EXCEPTIONS
899 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
905 #ifndef PERL_FLEXIBLE_EXCEPTIONS
906 parse_body(env,xsinit);
909 call_list(oldscope, PL_checkav);
916 /* my_exit() was called */
917 while (PL_scopestack_ix > oldscope)
920 PL_curstash = PL_defstash;
922 call_list(oldscope, PL_checkav);
923 ret = STATUS_NATIVE_EXPORT;
926 PerlIO_printf(Perl_error_log, "panic: top_env\n");
934 #ifdef PERL_FLEXIBLE_EXCEPTIONS
936 S_vparse_body(pTHX_ va_list args)
938 char **env = va_arg(args, char**);
939 XSINIT_t xsinit = va_arg(args, XSINIT_t);
941 return parse_body(env, xsinit);
946 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
948 int argc = PL_origargc;
949 char **argv = PL_origargv;
950 char *scriptname = NULL;
952 VOL bool dosearch = FALSE;
957 char *cddir = Nullch;
959 sv_setpvn(PL_linestr,"",0);
960 sv = newSVpvn("",0); /* first used for -I flags */
964 for (argc--,argv++; argc > 0; argc--,argv++) {
965 if (argv[0][0] != '-' || !argv[0][1])
969 validarg = " PHOOEY ";
978 win32_argv2utf8(argc-1, argv+1);
981 #ifndef PERL_STRICT_CR
1005 if ((s = moreswitches(s)))
1015 #ifdef MACOS_TRADITIONAL
1016 /* ignore -e for Dev:Pseudo argument */
1017 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1020 if (PL_euid != PL_uid || PL_egid != PL_gid)
1021 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1023 PL_e_script = newSVpvn("",0);
1024 filter_add(read_e_script, NULL);
1027 sv_catpv(PL_e_script, s);
1029 sv_catpv(PL_e_script, argv[1]);
1033 Perl_croak(aTHX_ "No code specified for -e");
1034 sv_catpv(PL_e_script, "\n");
1037 case 'I': /* -I handled both here and in moreswitches() */
1039 if (!*++s && (s=argv[1]) != Nullch) {
1044 STRLEN len = strlen(s);
1045 p = savepvn(s, len);
1046 incpush(p, TRUE, TRUE);
1047 sv_catpvn(sv, "-I", 2);
1048 sv_catpvn(sv, p, len);
1049 sv_catpvn(sv, " ", 1);
1053 Perl_croak(aTHX_ "No directory specified for -I");
1057 PL_preprocess = TRUE;
1067 PL_preambleav = newAV();
1068 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1070 PL_Sv = newSVpv("print myconfig();",0);
1072 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1074 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1076 sv_catpv(PL_Sv,"\" Compile-time options:");
1078 sv_catpv(PL_Sv," DEBUGGING");
1080 # ifdef MULTIPLICITY
1081 sv_catpv(PL_Sv," MULTIPLICITY");
1084 sv_catpv(PL_Sv," USE_THREADS");
1086 # ifdef USE_ITHREADS
1087 sv_catpv(PL_Sv," USE_ITHREADS");
1089 # ifdef USE_64_BIT_INT
1090 sv_catpv(PL_Sv," USE_64_BIT_INT");
1092 # ifdef USE_64_BIT_ALL
1093 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1095 # ifdef USE_LONG_DOUBLE
1096 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1098 # ifdef USE_LARGE_FILES
1099 sv_catpv(PL_Sv," USE_LARGE_FILES");
1102 sv_catpv(PL_Sv," USE_SOCKS");
1105 sv_catpv(PL_Sv," PERL_OBJECT");
1107 # ifdef PERL_IMPLICIT_CONTEXT
1108 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1110 # ifdef PERL_IMPLICIT_SYS
1111 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1113 sv_catpv(PL_Sv,"\\n\",");
1115 #if defined(LOCAL_PATCH_COUNT)
1116 if (LOCAL_PATCH_COUNT > 0) {
1118 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1119 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1120 if (PL_localpatches[i])
1121 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1125 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1128 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1130 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1133 sv_catpv(PL_Sv, "; \
1135 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1136 print \" \\%ENV:\\n @env\\n\" if @env; \
1137 print \" \\@INC:\\n @INC\\n\";");
1140 PL_Sv = newSVpv("config_vars(qw(",0);
1141 sv_catpv(PL_Sv, ++s);
1142 sv_catpv(PL_Sv, "))");
1145 av_push(PL_preambleav, PL_Sv);
1146 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1149 PL_doextract = TRUE;
1157 if (!*++s || isSPACE(*s)) {
1161 /* catch use of gnu style long options */
1162 if (strEQ(s, "version")) {
1166 if (strEQ(s, "help")) {
1173 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1179 #ifndef SECURE_INTERNAL_GETENV
1182 (s = PerlEnv_getenv("PERL5OPT")))
1186 if (*s == '-' && *(s+1) == 'T')
1201 if (!strchr("DIMUdmw", *s))
1202 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1215 scriptname = argv[0];
1218 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1220 else if (scriptname == Nullch) {
1222 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1230 open_script(scriptname,dosearch,sv,&fdscript);
1232 validate_suid(validarg, scriptname,fdscript);
1235 #if defined(SIGCHLD) || defined(SIGCLD)
1238 # define SIGCHLD SIGCLD
1240 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1241 if (sigstate == SIG_IGN) {
1242 if (ckWARN(WARN_SIGNAL))
1243 Perl_warner(aTHX_ WARN_SIGNAL,
1244 "Can't ignore signal CHLD, forcing to default");
1245 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1251 #ifdef MACOS_TRADITIONAL
1252 if (PL_doextract || gMacPerl_AlwaysExtract) {
1257 if (cddir && PerlDir_chdir(cddir) < 0)
1258 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1262 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1263 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1264 CvUNIQUE_on(PL_compcv);
1266 PL_comppad = newAV();
1267 av_push(PL_comppad, Nullsv);
1268 PL_curpad = AvARRAY(PL_comppad);
1269 PL_comppad_name = newAV();
1270 PL_comppad_name_fill = 0;
1271 PL_min_intro_pending = 0;
1274 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1275 PL_curpad[0] = (SV*)newAV();
1276 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1277 CvOWNER(PL_compcv) = 0;
1278 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1279 MUTEX_INIT(CvMUTEXP(PL_compcv));
1280 #endif /* USE_THREADS */
1282 comppadlist = newAV();
1283 AvREAL_off(comppadlist);
1284 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1285 av_store(comppadlist, 1, (SV*)PL_comppad);
1286 CvPADLIST(PL_compcv) = comppadlist;
1288 boot_core_UNIVERSAL();
1290 boot_core_xsutils();
1294 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1296 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1302 # ifdef HAS_SOCKS5_INIT
1303 socks5_init(argv[0]);
1309 init_predump_symbols();
1310 /* init_postdump_symbols not currently designed to be called */
1311 /* more than once (ENV isn't cleared first, for example) */
1312 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1314 init_postdump_symbols(argc,argv,env);
1318 /* now parse the script */
1320 SETERRNO(0,SS$_NORMAL);
1322 #ifdef MACOS_TRADITIONAL
1323 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1325 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1327 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1328 MacPerl_MPWFileName(PL_origfilename));
1332 if (yyparse() || PL_error_count) {
1334 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1336 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1341 CopLINE_set(PL_curcop, 0);
1342 PL_curstash = PL_defstash;
1343 PL_preprocess = FALSE;
1345 SvREFCNT_dec(PL_e_script);
1346 PL_e_script = Nullsv;
1349 /* now that script is parsed, we can modify record separator */
1350 SvREFCNT_dec(PL_rs);
1351 PL_rs = SvREFCNT_inc(PL_nrs);
1352 sv_setsv(get_sv("/", TRUE), PL_rs);
1357 SAVECOPFILE(PL_curcop);
1358 SAVECOPLINE(PL_curcop);
1359 gv_check(PL_defstash);
1366 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1367 dump_mstats("after compilation:");
1376 =for apidoc perl_run
1378 Tells a Perl interpreter to run. See L<perlembed>.
1393 oldscope = PL_scopestack_ix;
1395 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1397 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1403 cxstack_ix = -1; /* start context stack again */
1405 case 0: /* normal completion */
1406 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1411 case 2: /* my_exit() */
1412 while (PL_scopestack_ix > oldscope)
1415 PL_curstash = PL_defstash;
1416 if (PL_endav && !PL_minus_c)
1417 call_list(oldscope, PL_endav);
1419 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1420 dump_mstats("after execution: ");
1422 ret = STATUS_NATIVE_EXPORT;
1426 POPSTACK_TO(PL_mainstack);
1429 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1439 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1441 S_vrun_body(pTHX_ va_list args)
1443 I32 oldscope = va_arg(args, I32);
1445 return run_body(oldscope);
1451 S_run_body(pTHX_ I32 oldscope)
1453 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1454 PL_sawampersand ? "Enabling" : "Omitting"));
1456 if (!PL_restartop) {
1457 DEBUG_x(dump_all());
1458 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1459 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1463 #ifdef MACOS_TRADITIONAL
1464 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1466 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1470 if (PERLDB_SINGLE && PL_DBsingle)
1471 sv_setiv(PL_DBsingle, 1);
1473 call_list(oldscope, PL_initav);
1479 PL_op = PL_restartop;
1483 else if (PL_main_start) {
1484 CvDEPTH(PL_main_cv) = 1;
1485 PL_op = PL_main_start;
1495 =for apidoc p||get_sv
1497 Returns the SV of the specified Perl scalar. 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_sv(pTHX_ const char *name, I32 create)
1509 if (name[1] == '\0' && !isALPHA(name[0])) {
1510 PADOFFSET tmp = find_threadsv(name);
1511 if (tmp != NOT_IN_PAD)
1512 return THREADSV(tmp);
1514 #endif /* USE_THREADS */
1515 gv = gv_fetchpv(name, create, SVt_PV);
1522 =for apidoc p||get_av
1524 Returns the AV of the specified Perl array. If C<create> is set and the
1525 Perl variable does not exist then it will be created. If C<create> is not
1526 set and the variable does not exist then NULL is returned.
1532 Perl_get_av(pTHX_ const char *name, I32 create)
1534 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1543 =for apidoc p||get_hv
1545 Returns the HV of the specified Perl hash. If C<create> is set and the
1546 Perl variable does not exist then it will be created. If C<create> is not
1547 set and the variable does not exist then NULL is returned.
1553 Perl_get_hv(pTHX_ const char *name, I32 create)
1555 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1564 =for apidoc p||get_cv
1566 Returns the CV of the specified Perl subroutine. If C<create> is set and
1567 the Perl subroutine does not exist then it will be declared (which has the
1568 same effect as saying C<sub name;>). If C<create> is not set and the
1569 subroutine does not exist then NULL is returned.
1575 Perl_get_cv(pTHX_ const char *name, I32 create)
1577 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1578 /* XXX unsafe for threads if eval_owner isn't held */
1579 /* XXX this is probably not what they think they're getting.
1580 * It has the same effect as "sub name;", i.e. just a forward
1582 if (create && !GvCVu(gv))
1583 return newSUB(start_subparse(FALSE, 0),
1584 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1592 /* Be sure to refetch the stack pointer after calling these routines. */
1595 =for apidoc p||call_argv
1597 Performs a callback to the specified Perl sub. See L<perlcall>.
1603 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1605 /* See G_* flags in cop.h */
1606 /* null terminated arg list */
1613 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1618 return call_pv(sub_name, flags);
1622 =for apidoc p||call_pv
1624 Performs a callback to the specified Perl sub. See L<perlcall>.
1630 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1631 /* name of the subroutine */
1632 /* See G_* flags in cop.h */
1634 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1638 =for apidoc p||call_method
1640 Performs a callback to the specified Perl method. The blessed object must
1641 be on the stack. See L<perlcall>.
1647 Perl_call_method(pTHX_ const char *methname, I32 flags)
1648 /* name of the subroutine */
1649 /* See G_* flags in cop.h */
1651 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1654 /* May be called with any of a CV, a GV, or an SV containing the name. */
1656 =for apidoc p||call_sv
1658 Performs a callback to the Perl sub whose name is in the SV. See
1665 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1666 /* See G_* flags in cop.h */
1669 LOGOP myop; /* fake syntax tree node */
1674 bool oldcatch = CATCH_GET;
1679 if (flags & G_DISCARD) {
1684 Zero(&myop, 1, LOGOP);
1685 myop.op_next = Nullop;
1686 if (!(flags & G_NOARGS))
1687 myop.op_flags |= OPf_STACKED;
1688 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1689 (flags & G_ARRAY) ? OPf_WANT_LIST :
1694 EXTEND(PL_stack_sp, 1);
1695 *++PL_stack_sp = sv;
1697 oldscope = PL_scopestack_ix;
1699 if (PERLDB_SUB && PL_curstash != PL_debstash
1700 /* Handle first BEGIN of -d. */
1701 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1702 /* Try harder, since this may have been a sighandler, thus
1703 * curstash may be meaningless. */
1704 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1705 && !(flags & G_NODEBUG))
1706 PL_op->op_private |= OPpENTERSUB_DB;
1708 if (flags & G_METHOD) {
1709 Zero(&method_op, 1, UNOP);
1710 method_op.op_next = PL_op;
1711 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1712 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1713 PL_op = (OP*)&method_op;
1716 if (!(flags & G_EVAL)) {
1718 call_body((OP*)&myop, FALSE);
1719 retval = PL_stack_sp - (PL_stack_base + oldmark);
1720 CATCH_SET(oldcatch);
1723 myop.op_other = (OP*)&myop;
1725 /* we're trying to emulate pp_entertry() here */
1727 register PERL_CONTEXT *cx;
1728 I32 gimme = GIMME_V;
1733 push_return(Nullop);
1734 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1736 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1738 PL_in_eval = EVAL_INEVAL;
1739 if (flags & G_KEEPERR)
1740 PL_in_eval |= EVAL_KEEPERR;
1746 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1748 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1755 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1757 call_body((OP*)&myop, FALSE);
1759 retval = PL_stack_sp - (PL_stack_base + oldmark);
1760 if (!(flags & G_KEEPERR))
1767 /* my_exit() was called */
1768 PL_curstash = PL_defstash;
1771 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1772 Perl_croak(aTHX_ "Callback called exit");
1777 PL_op = PL_restartop;
1781 PL_stack_sp = PL_stack_base + oldmark;
1782 if (flags & G_ARRAY)
1786 *++PL_stack_sp = &PL_sv_undef;
1791 if (PL_scopestack_ix > oldscope) {
1795 register PERL_CONTEXT *cx;
1807 if (flags & G_DISCARD) {
1808 PL_stack_sp = PL_stack_base + oldmark;
1817 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1819 S_vcall_body(pTHX_ va_list args)
1821 OP *myop = va_arg(args, OP*);
1822 int is_eval = va_arg(args, int);
1824 call_body(myop, is_eval);
1830 S_call_body(pTHX_ OP *myop, int is_eval)
1832 if (PL_op == myop) {
1834 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1836 PL_op = Perl_pp_entersub(aTHX); /* this does */
1842 /* Eval a string. The G_EVAL flag is always assumed. */
1845 =for apidoc p||eval_sv
1847 Tells Perl to C<eval> the string in the SV.
1853 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1855 /* See G_* flags in cop.h */
1858 UNOP myop; /* fake syntax tree node */
1859 I32 oldmark = SP - PL_stack_base;
1866 if (flags & G_DISCARD) {
1873 Zero(PL_op, 1, UNOP);
1874 EXTEND(PL_stack_sp, 1);
1875 *++PL_stack_sp = sv;
1876 oldscope = PL_scopestack_ix;
1878 if (!(flags & G_NOARGS))
1879 myop.op_flags = OPf_STACKED;
1880 myop.op_next = Nullop;
1881 myop.op_type = OP_ENTEREVAL;
1882 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1883 (flags & G_ARRAY) ? OPf_WANT_LIST :
1885 if (flags & G_KEEPERR)
1886 myop.op_flags |= OPf_SPECIAL;
1888 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1890 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1897 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1899 call_body((OP*)&myop,TRUE);
1901 retval = PL_stack_sp - (PL_stack_base + oldmark);
1902 if (!(flags & G_KEEPERR))
1909 /* my_exit() was called */
1910 PL_curstash = PL_defstash;
1913 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1914 Perl_croak(aTHX_ "Callback called exit");
1919 PL_op = PL_restartop;
1923 PL_stack_sp = PL_stack_base + oldmark;
1924 if (flags & G_ARRAY)
1928 *++PL_stack_sp = &PL_sv_undef;
1934 if (flags & G_DISCARD) {
1935 PL_stack_sp = PL_stack_base + oldmark;
1945 =for apidoc p||eval_pv
1947 Tells Perl to C<eval> the given string and return an SV* result.
1953 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1956 SV* sv = newSVpv(p, 0);
1958 eval_sv(sv, G_SCALAR);
1965 if (croak_on_error && SvTRUE(ERRSV)) {
1967 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1973 /* Require a module. */
1976 =for apidoc p||require_pv
1978 Tells Perl to C<require> a module.
1984 Perl_require_pv(pTHX_ const char *pv)
1988 PUSHSTACKi(PERLSI_REQUIRE);
1990 sv = sv_newmortal();
1991 sv_setpv(sv, "require '");
1994 eval_sv(sv, G_DISCARD);
2000 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
2004 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
2005 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
2009 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
2011 /* This message really ought to be max 23 lines.
2012 * Removed -h because the user already knows that opton. Others? */
2014 static char *usage_msg[] = {
2015 "-0[octal] specify record separator (\\0, if no argument)",
2016 "-a autosplit mode with -n or -p (splits $_ into @F)",
2017 "-C enable native wide character system interfaces",
2018 "-c check syntax only (runs BEGIN and CHECK blocks)",
2019 "-d[:debugger] run program under debugger",
2020 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2021 "-e 'command' one line of program (several -e's allowed, omit programfile)",
2022 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
2023 "-i[extension] edit <> files in place (makes backup if extension supplied)",
2024 "-Idirectory specify @INC/#include directory (several -I's allowed)",
2025 "-l[octal] enable line ending processing, specifies line terminator",
2026 "-[mM][-]module execute `use/no module...' before executing program",
2027 "-n assume 'while (<>) { ... }' loop around program",
2028 "-p assume loop like -n but print line also, like sed",
2029 "-P run program through C preprocessor before compilation",
2030 "-s enable rudimentary parsing for switches after programfile",
2031 "-S look for programfile using PATH environment variable",
2032 "-T enable tainting checks",
2033 "-u dump core after parsing program",
2034 "-U allow unsafe operations",
2035 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2036 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2037 "-w enable many useful warnings (RECOMMENDED)",
2038 "-W enable all warnings",
2039 "-X disable all warnings",
2040 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2044 char **p = usage_msg;
2046 PerlIO_printf(PerlIO_stdout(),
2047 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2050 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2053 /* This routine handles any switches that can be given during run */
2056 Perl_moreswitches(pTHX_ char *s)
2064 numlen = 0; /* disallow underscores */
2065 rschar = (U32)scan_oct(s, 4, &numlen);
2066 SvREFCNT_dec(PL_nrs);
2067 if (rschar & ~((U8)~0))
2068 PL_nrs = &PL_sv_undef;
2069 else if (!rschar && numlen >= 2)
2070 PL_nrs = newSVpvn("", 0);
2073 PL_nrs = newSVpvn(&ch, 1);
2078 PL_widesyscalls = TRUE;
2083 PL_splitstr = savepv(s + 1);
2097 /* The following permits -d:Mod to accepts arguments following an =
2098 in the fashion that -MSome::Mod does. */
2099 if (*s == ':' || *s == '=') {
2102 sv = newSVpv("use Devel::", 0);
2104 /* We now allow -d:Module=Foo,Bar */
2105 while(isALNUM(*s) || *s==':') ++s;
2107 sv_catpv(sv, start);
2109 sv_catpvn(sv, start, s-start);
2110 sv_catpv(sv, " split(/,/,q{");
2115 my_setenv("PERL5DB", SvPV(sv, PL_na));
2118 PL_perldb = PERLDB_ALL;
2126 if (isALPHA(s[1])) {
2127 static char debopts[] = "psltocPmfrxuLHXDST";
2130 for (s++; *s && (d = strchr(debopts,*s)); s++)
2131 PL_debug |= 1 << (d - debopts);
2134 PL_debug = atoi(s+1);
2135 for (s++; isDIGIT(*s); s++) ;
2137 PL_debug |= 0x80000000;
2139 if (ckWARN_d(WARN_DEBUGGING))
2140 Perl_warner(aTHX_ WARN_DEBUGGING,
2141 "Recompile perl with -DDEBUGGING to use -D switch\n");
2142 for (s++; isALNUM(*s); s++) ;
2148 usage(PL_origargv[0]);
2152 Safefree(PL_inplace);
2153 PL_inplace = savepv(s+1);
2155 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2158 if (*s == '-') /* Additional switches on #! line. */
2162 case 'I': /* -I handled both here and in parse_perl() */
2165 while (*s && isSPACE(*s))
2170 /* ignore trailing spaces (possibly followed by other switches) */
2172 for (e = p; *e && !isSPACE(*e); e++) ;
2176 } while (*p && *p != '-');
2177 e = savepvn(s, e-s);
2178 incpush(e, TRUE, TRUE);
2185 Perl_croak(aTHX_ "No directory specified for -I");
2191 SvREFCNT_dec(PL_ors_sv);
2195 PL_ors_sv = newSVpvn("\n",1);
2196 numlen = 0; /* disallow underscores */
2197 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2201 if (RsPARA(PL_nrs)) {
2202 PL_ors_sv = newSVpvn("\n\n",2);
2205 PL_ors_sv = newSVsv(PL_nrs);
2210 forbid_setid("-M"); /* XXX ? */
2213 forbid_setid("-m"); /* XXX ? */
2218 /* -M-foo == 'no foo' */
2219 if (*s == '-') { use = "no "; ++s; }
2220 sv = newSVpv(use,0);
2222 /* We allow -M'Module qw(Foo Bar)' */
2223 while(isALNUM(*s) || *s==':') ++s;
2225 sv_catpv(sv, start);
2226 if (*(start-1) == 'm') {
2228 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2229 sv_catpv( sv, " ()");
2233 Perl_croak(aTHX_ "Module name required with -%c option",
2235 sv_catpvn(sv, start, s-start);
2236 sv_catpv(sv, " split(/,/,q{");
2242 PL_preambleav = newAV();
2243 av_push(PL_preambleav, sv);
2246 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2258 PL_doswitches = TRUE;
2263 Perl_croak(aTHX_ "Too late for \"-T\" option");
2267 #ifdef MACOS_TRADITIONAL
2268 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2270 PL_do_undump = TRUE;
2278 PerlIO_printf(PerlIO_stdout(),
2279 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2280 PL_patchlevel, ARCHNAME));
2281 #if defined(LOCAL_PATCH_COUNT)
2282 if (LOCAL_PATCH_COUNT > 0)
2283 PerlIO_printf(PerlIO_stdout(),
2284 "\n(with %d registered patch%s, "
2285 "see perl -V for more detail)",
2286 (int)LOCAL_PATCH_COUNT,
2287 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2290 PerlIO_printf(PerlIO_stdout(),
2291 "\n\nCopyright 1987-2001, Larry Wall\n");
2292 #ifdef MACOS_TRADITIONAL
2293 PerlIO_printf(PerlIO_stdout(),
2294 "\nMac OS port Copyright (c) 1991-2001, Matthias Neeracher\n");
2297 PerlIO_printf(PerlIO_stdout(),
2298 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2301 PerlIO_printf(PerlIO_stdout(),
2302 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2303 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2306 PerlIO_printf(PerlIO_stdout(),
2307 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2308 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2311 PerlIO_printf(PerlIO_stdout(),
2312 "atariST series port, ++jrb bammi@cadence.com\n");
2315 PerlIO_printf(PerlIO_stdout(),
2316 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2319 PerlIO_printf(PerlIO_stdout(),
2320 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2323 PerlIO_printf(PerlIO_stdout(),
2324 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2327 PerlIO_printf(PerlIO_stdout(),
2328 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2331 PerlIO_printf(PerlIO_stdout(),
2332 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2335 PerlIO_printf(PerlIO_stdout(),
2336 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2339 PerlIO_printf(PerlIO_stdout(),
2340 "MiNT port by Guido Flohr, 1997-1999\n");
2343 PerlIO_printf(PerlIO_stdout(),
2344 "EPOC port by Olaf Flebbe, 1999-2000\n");
2346 #ifdef BINARY_BUILD_NOTICE
2347 BINARY_BUILD_NOTICE;
2349 PerlIO_printf(PerlIO_stdout(),
2351 Perl may be copied only under the terms of either the Artistic License or the\n\
2352 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2353 Complete documentation for Perl, including FAQ lists, should be found on\n\
2354 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2355 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2358 if (! (PL_dowarn & G_WARN_ALL_MASK))
2359 PL_dowarn |= G_WARN_ON;
2363 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2364 PL_compiling.cop_warnings = pWARN_ALL ;
2368 PL_dowarn = G_WARN_ALL_OFF;
2369 PL_compiling.cop_warnings = pWARN_NONE ;
2374 if (s[1] == '-') /* Additional switches on #! line. */
2379 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2385 #ifdef ALTERNATE_SHEBANG
2386 case 'S': /* OS/2 needs -S on "extproc" line. */
2394 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2399 /* compliments of Tom Christiansen */
2401 /* unexec() can be found in the Gnu emacs distribution */
2402 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2405 Perl_my_unexec(pTHX)
2413 prog = newSVpv(BIN_EXP, 0);
2414 sv_catpv(prog, "/perl");
2415 file = newSVpv(PL_origfilename, 0);
2416 sv_catpv(file, ".perldump");
2418 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2419 /* unexec prints msg to stderr in case of failure */
2420 PerlProc_exit(status);
2423 # include <lib$routines.h>
2424 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2426 ABORT(); /* for use with undump */
2431 /* initialize curinterp */
2436 #ifdef PERL_OBJECT /* XXX kludge */
2439 PL_chopset = " \n-"; \
2440 PL_copline = NOLINE; \
2441 PL_curcop = &PL_compiling;\
2442 PL_curcopdb = NULL; \
2444 PL_dumpindent = 4; \
2445 PL_laststatval = -1; \
2446 PL_laststype = OP_STAT; \
2447 PL_maxscream = -1; \
2448 PL_maxsysfd = MAXSYSFD; \
2449 PL_statname = Nullsv; \
2450 PL_tmps_floor = -1; \
2452 PL_op_mask = NULL; \
2453 PL_laststatval = -1; \
2454 PL_laststype = OP_STAT; \
2455 PL_mess_sv = Nullsv; \
2456 PL_splitstr = " "; \
2457 PL_generation = 100; \
2458 PL_exitlist = NULL; \
2459 PL_exitlistlen = 0; \
2461 PL_in_clean_objs = FALSE; \
2462 PL_in_clean_all = FALSE; \
2463 PL_profiledata = NULL; \
2465 PL_rsfp_filters = Nullav; \
2470 # ifdef MULTIPLICITY
2471 # define PERLVAR(var,type)
2472 # define PERLVARA(var,n,type)
2473 # if defined(PERL_IMPLICIT_CONTEXT)
2474 # if defined(USE_THREADS)
2475 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2476 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2477 # else /* !USE_THREADS */
2478 # define PERLVARI(var,type,init) aTHX->var = init;
2479 # define PERLVARIC(var,type,init) aTHX->var = init;
2480 # endif /* USE_THREADS */
2482 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2483 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2485 # include "intrpvar.h"
2486 # ifndef USE_THREADS
2487 # include "thrdvar.h"
2494 # define PERLVAR(var,type)
2495 # define PERLVARA(var,n,type)
2496 # define PERLVARI(var,type,init) PL_##var = init;
2497 # define PERLVARIC(var,type,init) PL_##var = init;
2498 # include "intrpvar.h"
2499 # ifndef USE_THREADS
2500 # include "thrdvar.h"
2512 S_init_main_stash(pTHX)
2516 /* Note that strtab is a rather special HV. Assumptions are made
2517 about not iterating on it, and not adding tie magic to it.
2518 It is properly deallocated in perl_destruct() */
2519 PL_strtab = newHV();
2521 MUTEX_INIT(&PL_strtab_mutex);
2523 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2524 hv_ksplit(PL_strtab, 512);
2526 PL_curstash = PL_defstash = newHV();
2527 PL_curstname = newSVpvn("main",4);
2528 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2529 SvREFCNT_dec(GvHV(gv));
2530 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2532 HvNAME(PL_defstash) = savepv("main");
2533 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2534 GvMULTI_on(PL_incgv);
2535 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2536 GvMULTI_on(PL_hintgv);
2537 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2538 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2539 GvMULTI_on(PL_errgv);
2540 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2541 GvMULTI_on(PL_replgv);
2542 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2543 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2544 sv_setpvn(ERRSV, "", 0);
2545 PL_curstash = PL_defstash;
2546 CopSTASH_set(&PL_compiling, PL_defstash);
2547 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2548 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2549 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2550 /* We must init $/ before switches are processed. */
2551 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2555 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2560 PL_origfilename = savepv("-e");
2563 /* if find_script() returns, it returns a malloc()-ed value */
2564 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2566 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2567 char *s = scriptname + 8;
2568 *fdscript = atoi(s);
2572 scriptname = savepv(s + 1);
2573 Safefree(PL_origfilename);
2574 PL_origfilename = scriptname;
2580 Safefree(CopFILE(PL_curcop));
2582 SvREFCNT_dec(CopFILEGV(PL_curcop));
2584 CopFILE_set(PL_curcop, PL_origfilename);
2585 if (strEQ(PL_origfilename,"-"))
2587 if (*fdscript >= 0) {
2588 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2589 #if defined(HAS_FCNTL) && defined(F_SETFD)
2591 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2594 else if (PL_preprocess) {
2595 char *cpp_cfg = CPPSTDIN;
2596 SV *cpp = newSVpvn("",0);
2597 SV *cmd = NEWSV(0,0);
2599 if (strEQ(cpp_cfg, "cppstdin"))
2600 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2601 sv_catpv(cpp, cpp_cfg);
2603 sv_catpvn(sv, "-I", 2);
2604 sv_catpv(sv,PRIVLIB_EXP);
2606 #if defined(MSDOS) || defined(WIN32)
2607 Perl_sv_setpvf(aTHX_ cmd, "\
2608 sed %s -e \"/^[^#]/b\" \
2609 -e \"/^#[ ]*include[ ]/b\" \
2610 -e \"/^#[ ]*define[ ]/b\" \
2611 -e \"/^#[ ]*if[ ]/b\" \
2612 -e \"/^#[ ]*ifdef[ ]/b\" \
2613 -e \"/^#[ ]*ifndef[ ]/b\" \
2614 -e \"/^#[ ]*else/b\" \
2615 -e \"/^#[ ]*elif[ ]/b\" \
2616 -e \"/^#[ ]*undef[ ]/b\" \
2617 -e \"/^#[ ]*endif/b\" \
2619 %s | %"SVf" -C %"SVf" %s",
2620 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2623 Perl_sv_setpvf(aTHX_ cmd, "\
2624 %s %s -e '/^[^#]/b' \
2625 -e '/^#[ ]*include[ ]/b' \
2626 -e '/^#[ ]*define[ ]/b' \
2627 -e '/^#[ ]*if[ ]/b' \
2628 -e '/^#[ ]*ifdef[ ]/b' \
2629 -e '/^#[ ]*ifndef[ ]/b' \
2630 -e '/^#[ ]*else/b' \
2631 -e '/^#[ ]*elif[ ]/b' \
2632 -e '/^#[ ]*undef[ ]/b' \
2633 -e '/^#[ ]*endif/b' \
2635 %s | %"SVf" %"SVf" %s",
2637 Perl_sv_setpvf(aTHX_ cmd, "\
2638 %s %s -e '/^[^#]/b' \
2639 -e '/^#[ ]*include[ ]/b' \
2640 -e '/^#[ ]*define[ ]/b' \
2641 -e '/^#[ ]*if[ ]/b' \
2642 -e '/^#[ ]*ifdef[ ]/b' \
2643 -e '/^#[ ]*ifndef[ ]/b' \
2644 -e '/^#[ ]*else/b' \
2645 -e '/^#[ ]*elif[ ]/b' \
2646 -e '/^#[ ]*undef[ ]/b' \
2647 -e '/^#[ ]*endif/b' \
2649 %s | %"SVf" -C %"SVf" %s",
2656 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2658 scriptname, cpp, sv, CPPMINUS);
2659 PL_doextract = FALSE;
2660 #ifdef IAMSUID /* actually, this is caught earlier */
2661 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2663 (void)seteuid(PL_uid); /* musn't stay setuid root */
2666 (void)setreuid((Uid_t)-1, PL_uid);
2668 #ifdef HAS_SETRESUID
2669 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2671 PerlProc_setuid(PL_uid);
2675 if (PerlProc_geteuid() != PL_uid)
2676 Perl_croak(aTHX_ "Can't do seteuid!\n");
2678 #endif /* IAMSUID */
2679 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2683 else if (!*scriptname) {
2684 forbid_setid("program input from stdin");
2685 PL_rsfp = PerlIO_stdin();
2688 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2689 #if defined(HAS_FCNTL) && defined(F_SETFD)
2691 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2696 #ifndef IAMSUID /* in case script is not readable before setuid */
2698 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2699 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2702 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2703 (int)PERL_REVISION, (int)PERL_VERSION,
2704 (int)PERL_SUBVERSION), PL_origargv);
2705 Perl_croak(aTHX_ "Can't do setuid\n");
2709 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2710 CopFILE(PL_curcop), Strerror(errno));
2715 * I_SYSSTATVFS HAS_FSTATVFS
2717 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2718 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2719 * here so that metaconfig picks them up. */
2723 S_fd_on_nosuid_fs(pTHX_ int fd)
2725 int check_okay = 0; /* able to do all the required sys/libcalls */
2726 int on_nosuid = 0; /* the fd is on a nosuid fs */
2728 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2729 * fstatvfs() is UNIX98.
2730 * fstatfs() is 4.3 BSD.
2731 * ustat()+getmnt() is pre-4.3 BSD.
2732 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2733 * an irrelevant filesystem while trying to reach the right one.
2736 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2738 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2739 defined(HAS_FSTATVFS)
2740 # define FD_ON_NOSUID_CHECK_OKAY
2741 struct statvfs stfs;
2743 check_okay = fstatvfs(fd, &stfs) == 0;
2744 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2745 # endif /* fstatvfs */
2747 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2748 defined(PERL_MOUNT_NOSUID) && \
2749 defined(HAS_FSTATFS) && \
2750 defined(HAS_STRUCT_STATFS) && \
2751 defined(HAS_STRUCT_STATFS_F_FLAGS)
2752 # define FD_ON_NOSUID_CHECK_OKAY
2755 check_okay = fstatfs(fd, &stfs) == 0;
2756 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2757 # endif /* fstatfs */
2759 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2760 defined(PERL_MOUNT_NOSUID) && \
2761 defined(HAS_FSTAT) && \
2762 defined(HAS_USTAT) && \
2763 defined(HAS_GETMNT) && \
2764 defined(HAS_STRUCT_FS_DATA) && \
2766 # define FD_ON_NOSUID_CHECK_OKAY
2769 if (fstat(fd, &fdst) == 0) {
2771 if (ustat(fdst.st_dev, &us) == 0) {
2773 /* NOSTAT_ONE here because we're not examining fields which
2774 * vary between that case and STAT_ONE. */
2775 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2776 size_t cmplen = sizeof(us.f_fname);
2777 if (sizeof(fsd.fd_req.path) < cmplen)
2778 cmplen = sizeof(fsd.fd_req.path);
2779 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2780 fdst.st_dev == fsd.fd_req.dev) {
2782 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2788 # endif /* fstat+ustat+getmnt */
2790 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2791 defined(HAS_GETMNTENT) && \
2792 defined(HAS_HASMNTOPT) && \
2793 defined(MNTOPT_NOSUID)
2794 # define FD_ON_NOSUID_CHECK_OKAY
2795 FILE *mtab = fopen("/etc/mtab", "r");
2796 struct mntent *entry;
2797 struct stat stb, fsb;
2799 if (mtab && (fstat(fd, &stb) == 0)) {
2800 while (entry = getmntent(mtab)) {
2801 if (stat(entry->mnt_dir, &fsb) == 0
2802 && fsb.st_dev == stb.st_dev)
2804 /* found the filesystem */
2806 if (hasmntopt(entry, MNTOPT_NOSUID))
2809 } /* A single fs may well fail its stat(). */
2814 # endif /* getmntent+hasmntopt */
2817 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2820 #endif /* IAMSUID */
2823 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2829 /* do we need to emulate setuid on scripts? */
2831 /* This code is for those BSD systems that have setuid #! scripts disabled
2832 * in the kernel because of a security problem. Merely defining DOSUID
2833 * in perl will not fix that problem, but if you have disabled setuid
2834 * scripts in the kernel, this will attempt to emulate setuid and setgid
2835 * on scripts that have those now-otherwise-useless bits set. The setuid
2836 * root version must be called suidperl or sperlN.NNN. If regular perl
2837 * discovers that it has opened a setuid script, it calls suidperl with
2838 * the same argv that it had. If suidperl finds that the script it has
2839 * just opened is NOT setuid root, it sets the effective uid back to the
2840 * uid. We don't just make perl setuid root because that loses the
2841 * effective uid we had before invoking perl, if it was different from the
2844 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2845 * be defined in suidperl only. suidperl must be setuid root. The
2846 * Configure script will set this up for you if you want it.
2852 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2853 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2854 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2859 #ifndef HAS_SETREUID
2860 /* On this access check to make sure the directories are readable,
2861 * there is actually a small window that the user could use to make
2862 * filename point to an accessible directory. So there is a faint
2863 * chance that someone could execute a setuid script down in a
2864 * non-accessible directory. I don't know what to do about that.
2865 * But I don't think it's too important. The manual lies when
2866 * it says access() is useful in setuid programs.
2868 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2869 Perl_croak(aTHX_ "Permission denied");
2871 /* If we can swap euid and uid, then we can determine access rights
2872 * with a simple stat of the file, and then compare device and
2873 * inode to make sure we did stat() on the same file we opened.
2874 * Then we just have to make sure he or she can execute it.
2877 struct stat tmpstatbuf;
2881 setreuid(PL_euid,PL_uid) < 0
2884 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2887 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2888 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2889 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2890 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2891 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2892 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2893 Perl_croak(aTHX_ "Permission denied");
2895 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2896 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2897 (void)PerlIO_close(PL_rsfp);
2898 Perl_croak(aTHX_ "Permission denied\n");
2902 setreuid(PL_uid,PL_euid) < 0
2904 # if defined(HAS_SETRESUID)
2905 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2908 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2909 Perl_croak(aTHX_ "Can't reswap uid and euid");
2910 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2911 Perl_croak(aTHX_ "Permission denied\n");
2913 #endif /* HAS_SETREUID */
2914 #endif /* IAMSUID */
2916 if (!S_ISREG(PL_statbuf.st_mode))
2917 Perl_croak(aTHX_ "Permission denied");
2918 if (PL_statbuf.st_mode & S_IWOTH)
2919 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2920 PL_doswitches = FALSE; /* -s is insecure in suid */
2921 CopLINE_inc(PL_curcop);
2922 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2923 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2924 Perl_croak(aTHX_ "No #! line");
2925 s = SvPV(PL_linestr,n_a)+2;
2927 while (!isSPACE(*s)) s++;
2928 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2929 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2930 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2931 Perl_croak(aTHX_ "Not a perl script");
2932 while (*s == ' ' || *s == '\t') s++;
2934 * #! arg must be what we saw above. They can invoke it by
2935 * mentioning suidperl explicitly, but they may not add any strange
2936 * arguments beyond what #! says if they do invoke suidperl that way.
2938 len = strlen(validarg);
2939 if (strEQ(validarg," PHOOEY ") ||
2940 strnNE(s,validarg,len) || !isSPACE(s[len]))
2941 Perl_croak(aTHX_ "Args must match #! line");
2944 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2945 PL_euid == PL_statbuf.st_uid)
2947 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2948 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2949 #endif /* IAMSUID */
2951 if (PL_euid) { /* oops, we're not the setuid root perl */
2952 (void)PerlIO_close(PL_rsfp);
2955 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2956 (int)PERL_REVISION, (int)PERL_VERSION,
2957 (int)PERL_SUBVERSION), PL_origargv);
2959 Perl_croak(aTHX_ "Can't do setuid\n");
2962 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2964 (void)setegid(PL_statbuf.st_gid);
2967 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2969 #ifdef HAS_SETRESGID
2970 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2972 PerlProc_setgid(PL_statbuf.st_gid);
2976 if (PerlProc_getegid() != PL_statbuf.st_gid)
2977 Perl_croak(aTHX_ "Can't do setegid!\n");
2979 if (PL_statbuf.st_mode & S_ISUID) {
2980 if (PL_statbuf.st_uid != PL_euid)
2982 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2985 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2987 #ifdef HAS_SETRESUID
2988 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2990 PerlProc_setuid(PL_statbuf.st_uid);
2994 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2995 Perl_croak(aTHX_ "Can't do seteuid!\n");
2997 else if (PL_uid) { /* oops, mustn't run as root */
2999 (void)seteuid((Uid_t)PL_uid);
3002 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
3004 #ifdef HAS_SETRESUID
3005 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
3007 PerlProc_setuid((Uid_t)PL_uid);
3011 if (PerlProc_geteuid() != PL_uid)
3012 Perl_croak(aTHX_ "Can't do seteuid!\n");
3015 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
3016 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
3019 else if (PL_preprocess)
3020 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3021 else if (fdscript >= 0)
3022 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3024 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3026 /* We absolutely must clear out any saved ids here, so we */
3027 /* exec the real perl, substituting fd script for scriptname. */
3028 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3029 PerlIO_rewind(PL_rsfp);
3030 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3031 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3032 if (!PL_origargv[which])
3033 Perl_croak(aTHX_ "Permission denied");
3034 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3035 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3036 #if defined(HAS_FCNTL) && defined(F_SETFD)
3037 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3039 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3040 (int)PERL_REVISION, (int)PERL_VERSION,
3041 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3042 Perl_croak(aTHX_ "Can't do setuid\n");
3043 #endif /* IAMSUID */
3045 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3046 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3047 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3048 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3050 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3053 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3054 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3055 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3056 /* not set-id, must be wrapped */
3062 S_find_beginning(pTHX)
3064 register char *s, *s2;
3066 /* skip forward in input to the real script? */
3069 #ifdef MACOS_TRADITIONAL
3070 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
3072 while (PL_doextract || gMacPerl_AlwaysExtract) {
3073 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3074 if (!gMacPerl_AlwaysExtract)
3075 Perl_croak(aTHX_ "No Perl script found in input\n");
3077 if (PL_doextract) /* require explicit override ? */
3078 if (!OverrideExtract(PL_origfilename))
3079 Perl_croak(aTHX_ "User aborted script\n");
3081 PL_doextract = FALSE;
3083 /* Pater peccavi, file does not have #! */
3084 PerlIO_rewind(PL_rsfp);
3089 while (PL_doextract) {
3090 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3091 Perl_croak(aTHX_ "No Perl script found in input\n");
3093 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3094 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3095 PL_doextract = FALSE;
3096 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3098 while (*s == ' ' || *s == '\t') s++;
3100 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3101 if (strnEQ(s2-4,"perl",4))
3103 while ((s = moreswitches(s)))
3114 PL_uid = PerlProc_getuid();
3115 PL_euid = PerlProc_geteuid();
3116 PL_gid = PerlProc_getgid();
3117 PL_egid = PerlProc_getegid();
3119 PL_uid |= PL_gid << 16;
3120 PL_euid |= PL_egid << 16;
3122 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3126 S_forbid_setid(pTHX_ char *s)
3128 if (PL_euid != PL_uid)
3129 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3130 if (PL_egid != PL_gid)
3131 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3135 Perl_init_debugger(pTHX)
3137 HV *ostash = PL_curstash;
3139 PL_curstash = PL_debstash;
3140 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3141 AvREAL_off(PL_dbargs);
3142 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3143 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3144 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3145 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3146 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3147 sv_setiv(PL_DBsingle, 0);
3148 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3149 sv_setiv(PL_DBtrace, 0);
3150 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3151 sv_setiv(PL_DBsignal, 0);
3152 PL_curstash = ostash;
3155 #ifndef STRESS_REALLOC
3156 #define REASONABLE(size) (size)
3158 #define REASONABLE(size) (1) /* unreasonable */
3162 Perl_init_stacks(pTHX)
3164 /* start with 128-item stack and 8K cxstack */
3165 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3166 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3167 PL_curstackinfo->si_type = PERLSI_MAIN;
3168 PL_curstack = PL_curstackinfo->si_stack;
3169 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3171 PL_stack_base = AvARRAY(PL_curstack);
3172 PL_stack_sp = PL_stack_base;
3173 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3175 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3178 PL_tmps_max = REASONABLE(128);
3180 New(54,PL_markstack,REASONABLE(32),I32);
3181 PL_markstack_ptr = PL_markstack;
3182 PL_markstack_max = PL_markstack + REASONABLE(32);
3186 New(54,PL_scopestack,REASONABLE(32),I32);
3187 PL_scopestack_ix = 0;
3188 PL_scopestack_max = REASONABLE(32);
3190 New(54,PL_savestack,REASONABLE(128),ANY);
3191 PL_savestack_ix = 0;
3192 PL_savestack_max = REASONABLE(128);
3194 New(54,PL_retstack,REASONABLE(16),OP*);
3196 PL_retstack_max = REASONABLE(16);
3204 while (PL_curstackinfo->si_next)
3205 PL_curstackinfo = PL_curstackinfo->si_next;
3206 while (PL_curstackinfo) {
3207 PERL_SI *p = PL_curstackinfo->si_prev;
3208 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3209 Safefree(PL_curstackinfo->si_cxstack);
3210 Safefree(PL_curstackinfo);
3211 PL_curstackinfo = p;
3213 Safefree(PL_tmps_stack);
3214 Safefree(PL_markstack);
3215 Safefree(PL_scopestack);
3216 Safefree(PL_savestack);
3217 Safefree(PL_retstack);
3221 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3232 lex_start(PL_linestr);
3234 PL_subname = newSVpvn("main",4);
3238 S_init_predump_symbols(pTHX)
3243 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3244 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3245 GvMULTI_on(PL_stdingv);
3246 io = GvIOp(PL_stdingv);
3247 IoIFP(io) = PerlIO_stdin();
3248 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3250 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3252 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3255 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3257 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3259 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3261 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3262 GvMULTI_on(PL_stderrgv);
3263 io = GvIOp(PL_stderrgv);
3264 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3265 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3267 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3269 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3272 Safefree(PL_osname);
3273 PL_osname = savepv(OSNAME);
3277 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3282 char **dup_env_base = 0;
3283 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3284 int dup_env_count = 0;
3287 argc--,argv++; /* skip name of script */
3288 if (PL_doswitches) {
3289 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3292 if (argv[0][1] == '-' && !argv[0][2]) {
3296 if ((s = strchr(argv[0], '='))) {
3298 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3301 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3304 PL_toptarget = NEWSV(0,0);
3305 sv_upgrade(PL_toptarget, SVt_PVFM);
3306 sv_setpvn(PL_toptarget, "", 0);
3307 PL_bodytarget = NEWSV(0,0);
3308 sv_upgrade(PL_bodytarget, SVt_PVFM);
3309 sv_setpvn(PL_bodytarget, "", 0);
3310 PL_formtarget = PL_bodytarget;
3313 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3314 #ifdef MACOS_TRADITIONAL
3315 /* $0 is not majick on a Mac */
3316 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3318 sv_setpv(GvSV(tmpgv),PL_origfilename);
3319 magicname("0", "0", 1);
3322 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3324 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3326 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3328 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3329 GvMULTI_on(PL_argvgv);
3330 (void)gv_AVadd(PL_argvgv);
3331 av_clear(GvAVn(PL_argvgv));
3332 for (; argc > 0; argc--,argv++) {
3333 SV *sv = newSVpv(argv[0],0);
3334 av_push(GvAVn(PL_argvgv),sv);
3335 if (PL_widesyscalls)
3336 (void)sv_utf8_decode(sv);
3339 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3341 GvMULTI_on(PL_envgv);
3342 hv = GvHVn(PL_envgv);
3343 hv_magic(hv, Nullgv, 'E');
3344 #ifdef USE_ENVIRON_ARRAY
3345 /* Note that if the supplied env parameter is actually a copy
3346 of the global environ then it may now point to free'd memory
3347 if the environment has been modified since. To avoid this
3348 problem we treat env==NULL as meaning 'use the default'
3353 environ[0] = Nullch;
3354 #ifdef NEED_ENVIRON_DUP_FOR_MODIFY
3357 for (env_base = env; *env; env++)
3359 if ((dup_env_base = (char **)
3360 safemalloc( sizeof(char *) * (dup_env_count+1) ))) {
3362 for (env = env_base, dup_env = dup_env_base;
3365 *dup_env = savepv(*env);
3370 #endif /* NEED_ENVIRON_DUP_FOR_MODIFY */
3371 for (; *env; env++) {
3372 if (!(s = strchr(*env,'=')))
3378 sv = newSVpv(s--,0);
3379 (void)hv_store(hv, *env, s - *env, sv, 0);
3381 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3382 /* Sins of the RTL. See note in my_setenv(). */
3383 (void)PerlEnv_putenv(savepv(*env));
3388 for (dup_env = dup_env_base; *dup_env; dup_env++)
3390 Safefree(dup_env_base);
3392 #endif /* USE_ENVIRON_ARRAY */
3393 #ifdef DYNAMIC_ENV_FETCH
3394 HvNAME(hv) = savepv(ENV_HV_NAME);
3398 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3399 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3403 S_init_perllib(pTHX)
3408 s = PerlEnv_getenv("PERL5LIB");
3410 incpush(s, TRUE, TRUE);
3412 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3414 /* Treat PERL5?LIB as a possible search list logical name -- the
3415 * "natural" VMS idiom for a Unix path string. We allow each
3416 * element to be a set of |-separated directories for compatibility.
3420 if (my_trnlnm("PERL5LIB",buf,0))
3421 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3423 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3427 /* Use the ~-expanded versions of APPLLIB (undocumented),
3428 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3431 incpush(APPLLIB_EXP, TRUE, TRUE);
3435 incpush(ARCHLIB_EXP, FALSE, FALSE);
3437 #ifdef MACOS_TRADITIONAL
3439 struct stat tmpstatbuf;
3440 SV * privdir = NEWSV(55, 0);
3441 char * macperl = PerlEnv_getenv("MACPERL");
3446 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3447 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3448 incpush(SvPVX(privdir), TRUE, FALSE);
3449 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3450 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3451 incpush(SvPVX(privdir), TRUE, FALSE);
3453 SvREFCNT_dec(privdir);
3456 incpush(":", FALSE, FALSE);
3459 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3462 incpush(PRIVLIB_EXP, TRUE, FALSE);
3464 incpush(PRIVLIB_EXP, FALSE, FALSE);
3468 /* sitearch is always relative to sitelib on Windows for
3469 * DLL-based path intuition to work correctly */
3470 # if !defined(WIN32)
3471 incpush(SITEARCH_EXP, FALSE, FALSE);
3477 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3479 incpush(SITELIB_EXP, FALSE, FALSE);
3483 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3484 incpush(SITELIB_STEM, FALSE, TRUE);
3487 #ifdef PERL_VENDORARCH_EXP
3488 /* vendorarch is always relative to vendorlib on Windows for
3489 * DLL-based path intuition to work correctly */
3490 # if !defined(WIN32)
3491 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3495 #ifdef PERL_VENDORLIB_EXP
3497 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3499 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3503 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3504 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3507 #ifdef PERL_OTHERLIBDIRS
3508 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3512 incpush(".", FALSE, FALSE);
3513 #endif /* MACOS_TRADITIONAL */
3516 #if defined(DOSISH) || defined(EPOC)
3517 # define PERLLIB_SEP ';'
3520 # define PERLLIB_SEP '|'
3522 # if defined(MACOS_TRADITIONAL)
3523 # define PERLLIB_SEP ','
3525 # define PERLLIB_SEP ':'
3529 #ifndef PERLLIB_MANGLE
3530 # define PERLLIB_MANGLE(s,n) (s)
3534 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3536 SV *subdir = Nullsv;
3541 if (addsubdirs || addoldvers) {
3542 subdir = sv_newmortal();
3545 /* Break at all separators */
3547 SV *libdir = NEWSV(55,0);
3550 /* skip any consecutive separators */
3551 while ( *p == PERLLIB_SEP ) {
3552 /* Uncomment the next line for PATH semantics */
3553 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3557 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3558 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3563 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3564 p = Nullch; /* break out */
3566 #ifdef MACOS_TRADITIONAL
3567 if (!strchr(SvPVX(libdir), ':'))
3568 sv_insert(libdir, 0, 0, ":", 1);
3569 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3570 sv_catpv(libdir, ":");
3574 * BEFORE pushing libdir onto @INC we may first push version- and
3575 * archname-specific sub-directories.
3577 if (addsubdirs || addoldvers) {
3578 #ifdef PERL_INC_VERSION_LIST
3579 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3580 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3581 const char **incver;
3583 struct stat tmpstatbuf;
3588 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3590 while (unix[len-1] == '/') len--; /* Cosmetic */
3591 sv_usepvn(libdir,unix,len);
3594 PerlIO_printf(Perl_error_log,
3595 "Failed to unixify @INC element \"%s\"\n",
3599 #ifdef MACOS_TRADITIONAL
3600 #define PERL_AV_SUFFIX_FMT ""
3601 #define PERL_ARCH_FMT "%s:"
3602 #define PERL_ARCH_FMT_PATH PERL_FS_VER_FMT PERL_AV_SUFFIX_FMT
3604 #define PERL_AV_SUFFIX_FMT "/"
3605 #define PERL_ARCH_FMT "/%s"
3606 #define PERL_ARCH_FMT_PATH PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT
3608 /* .../version/archname if -d .../version/archname */
3609 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH PERL_ARCH_FMT,
3611 (int)PERL_REVISION, (int)PERL_VERSION,
3612 (int)PERL_SUBVERSION, ARCHNAME);
3613 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3614 S_ISDIR(tmpstatbuf.st_mode))
3615 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3617 /* .../version if -d .../version */
3618 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT_PATH, libdir,
3619 (int)PERL_REVISION, (int)PERL_VERSION,
3620 (int)PERL_SUBVERSION);
3621 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3622 S_ISDIR(tmpstatbuf.st_mode))
3623 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3625 /* .../archname if -d .../archname */
3626 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3627 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3628 S_ISDIR(tmpstatbuf.st_mode))
3629 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3632 #ifdef PERL_INC_VERSION_LIST
3634 for (incver = incverlist; *incver; incver++) {
3635 /* .../xxx if -d .../xxx */
3636 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3637 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3638 S_ISDIR(tmpstatbuf.st_mode))
3639 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3645 /* finally push this lib directory on the end of @INC */
3646 av_push(GvAVn(PL_incgv), libdir);
3651 STATIC struct perl_thread *
3652 S_init_main_thread(pTHX)
3654 #if !defined(PERL_IMPLICIT_CONTEXT)
3655 struct perl_thread *thr;
3659 Newz(53, thr, 1, struct perl_thread);
3660 PL_curcop = &PL_compiling;
3661 thr->interp = PERL_GET_INTERP;
3662 thr->cvcache = newHV();
3663 thr->threadsv = newAV();
3664 /* thr->threadsvp is set when find_threadsv is called */
3665 thr->specific = newAV();
3666 thr->flags = THRf_R_JOINABLE;
3667 MUTEX_INIT(&thr->mutex);
3668 /* Handcraft thrsv similarly to mess_sv */
3669 New(53, PL_thrsv, 1, SV);
3670 Newz(53, xpv, 1, XPV);
3671 SvFLAGS(PL_thrsv) = SVt_PV;
3672 SvANY(PL_thrsv) = (void*)xpv;
3673 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3674 SvPVX(PL_thrsv) = (char*)thr;
3675 SvCUR_set(PL_thrsv, sizeof(thr));
3676 SvLEN_set(PL_thrsv, sizeof(thr));
3677 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3678 thr->oursv = PL_thrsv;
3679 PL_chopset = " \n-";
3682 MUTEX_LOCK(&PL_threads_mutex);
3688 MUTEX_UNLOCK(&PL_threads_mutex);
3690 #ifdef HAVE_THREAD_INTERN
3691 Perl_init_thread_intern(thr);
3694 #ifdef SET_THREAD_SELF
3695 SET_THREAD_SELF(thr);
3697 thr->self = pthread_self();
3698 #endif /* SET_THREAD_SELF */
3702 * These must come after the thread self setting
3703 * because sv_setpvn does SvTAINT and the taint
3704 * fields thread selfness being set.
3706 PL_toptarget = NEWSV(0,0);
3707 sv_upgrade(PL_toptarget, SVt_PVFM);
3708 sv_setpvn(PL_toptarget, "", 0);
3709 PL_bodytarget = NEWSV(0,0);
3710 sv_upgrade(PL_bodytarget, SVt_PVFM);
3711 sv_setpvn(PL_bodytarget, "", 0);
3712 PL_formtarget = PL_bodytarget;
3713 thr->errsv = newSVpvn("", 0);
3714 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3717 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3718 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3719 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3720 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3721 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3723 PL_reginterp_cnt = 0;
3727 #endif /* USE_THREADS */
3730 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3733 line_t oldline = CopLINE(PL_curcop);
3739 while (AvFILL(paramList) >= 0) {
3740 cv = (CV*)av_shift(paramList);
3741 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3742 /* save PL_beginav for compiler */
3743 if (! PL_beginav_save)
3744 PL_beginav_save = newAV();
3745 av_push(PL_beginav_save, (SV*)cv);
3749 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3750 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3756 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3760 (void)SvPV(atsv, len);
3763 PL_curcop = &PL_compiling;
3764 CopLINE_set(PL_curcop, oldline);
3765 if (paramList == PL_beginav)
3766 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3768 Perl_sv_catpvf(aTHX_ atsv,
3769 "%s failed--call queue aborted",
3770 paramList == PL_checkav ? "CHECK"
3771 : paramList == PL_initav ? "INIT"
3773 while (PL_scopestack_ix > oldscope)
3776 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3783 /* my_exit() was called */
3784 while (PL_scopestack_ix > oldscope)
3787 PL_curstash = PL_defstash;
3788 PL_curcop = &PL_compiling;
3789 CopLINE_set(PL_curcop, oldline);
3791 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3792 if (paramList == PL_beginav)
3793 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3795 Perl_croak(aTHX_ "%s failed--call queue aborted",
3796 paramList == PL_checkav ? "CHECK"
3797 : paramList == PL_initav ? "INIT"
3804 PL_curcop = &PL_compiling;
3805 CopLINE_set(PL_curcop, oldline);
3808 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3816 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3818 S_vcall_list_body(pTHX_ va_list args)
3820 CV *cv = va_arg(args, CV*);
3821 return call_list_body(cv);
3826 S_call_list_body(pTHX_ CV *cv)
3828 PUSHMARK(PL_stack_sp);
3829 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3834 Perl_my_exit(pTHX_ U32 status)
3836 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3837 thr, (unsigned long) status));
3846 STATUS_NATIVE_SET(status);
3853 Perl_my_failure_exit(pTHX)
3856 if (vaxc$errno & 1) {
3857 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3858 STATUS_NATIVE_SET(44);
3861 if (!vaxc$errno && errno) /* unlikely */
3862 STATUS_NATIVE_SET(44);
3864 STATUS_NATIVE_SET(vaxc$errno);
3869 STATUS_POSIX_SET(errno);
3871 exitstatus = STATUS_POSIX >> 8;
3872 if (exitstatus & 255)
3873 STATUS_POSIX_SET(exitstatus);
3875 STATUS_POSIX_SET(255);
3882 S_my_exit_jump(pTHX)
3884 register PERL_CONTEXT *cx;
3889 SvREFCNT_dec(PL_e_script);
3890 PL_e_script = Nullsv;
3893 POPSTACK_TO(PL_mainstack);
3894 if (cxstack_ix >= 0) {
3897 POPBLOCK(cx,PL_curpm);
3909 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3912 p = SvPVX(PL_e_script);
3913 nl = strchr(p, '\n');
3914 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3916 filter_del(read_e_script);
3919 sv_catpvn(buf_sv, p, nl-p);
3920 sv_chop(PL_e_script, nl);