3 * Copyright (c) 1987-2000 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
60 # if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
71 PERL_SET_THX(my_perl); \
75 # define INIT_TLS_AND_INTERP \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
80 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
102 Zero(my_perl, 1, PerlInterpreter);
119 =for apidoc perl_alloc
121 Allocates a new Perl interpreter. See L<perlembed>.
129 PerlInterpreter *my_perl;
131 /* New() needs interpreter, so call malloc() instead */
132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
135 Zero(my_perl, 1, PerlInterpreter);
138 #endif /* PERL_IMPLICIT_SYS */
141 =for apidoc perl_construct
143 Initializes a new Perl interpreter. See L<perlembed>.
149 perl_construct(pTHXx)
154 struct perl_thread *thr = NULL;
155 #endif /* FAKE_THREADS */
156 #endif /* USE_THREADS */
160 PL_perl_destruct_level = 1;
162 if (PL_perl_destruct_level > 0)
166 /* Init the real globals (and main thread)? */
169 MUTEX_INIT(&PL_sv_mutex);
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
178 # ifdef EMULATE_ATOMIC_REFCOUNTS
179 MUTEX_INIT(&PL_svref_mutex);
180 # endif /* EMULATE_ATOMIC_REFCOUNTS */
182 MUTEX_INIT(&PL_cred_mutex);
183 MUTEX_INIT(&PL_sv_lock_mutex);
184 MUTEX_INIT(&PL_fdpid_mutex);
186 thr = init_main_thread();
187 #endif /* USE_THREADS */
189 #ifdef PERL_FLEXIBLE_EXCEPTIONS
190 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
193 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
195 PL_linestr = NEWSV(65,79);
196 sv_upgrade(PL_linestr,SVt_PVIV);
198 if (!SvREADONLY(&PL_sv_undef)) {
199 /* set read-only and try to insure than we wont see REFCNT==0
202 SvREADONLY_on(&PL_sv_undef);
203 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
205 sv_setpv(&PL_sv_no,PL_No);
207 SvREADONLY_on(&PL_sv_no);
208 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
210 sv_setpv(&PL_sv_yes,PL_Yes);
212 SvREADONLY_on(&PL_sv_yes);
213 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
218 /* PL_sighandlerp = sighandler; */
220 PL_sighandlerp = Perl_sighandler;
222 PL_pidstatus = newHV();
226 * There is no way we can refer to them from Perl so close them to save
227 * space. The other alternative would be to provide STDAUX and STDPRN
230 (void)fclose(stdaux);
231 (void)fclose(stdprn);
235 PL_nrs = newSVpvn("\n", 1);
236 PL_rs = SvREFCNT_inc(PL_nrs);
241 PL_lex_state = LEX_NOTPARSING;
247 SET_NUMERIC_STANDARD();
251 PL_patchlevel = NEWSV(0,4);
252 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
253 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
254 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
255 s = (U8*)SvPVX(PL_patchlevel);
256 s = uv_to_utf8(s, (UV)PERL_REVISION);
257 s = uv_to_utf8(s, (UV)PERL_VERSION);
258 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
264 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
265 + ((NV)PERL_SUBVERSION / (NV)1000000)
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
273 #if defined(LOCAL_PATCH_COUNT)
274 PL_localpatches = local_patches; /* For possible -v */
277 #ifdef HAVE_INTERP_INTERN
281 PerlIO_init(); /* Hook to IO system */
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
285 PL_errors = newSVpvn("",0);
291 =for apidoc perl_destruct
293 Shuts down a Perl interpreter. See L<perlembed>.
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 /* loosen bonds of global variables */
444 (void)PerlIO_close(PL_rsfp);
448 /* Filters for program text */
449 SvREFCNT_dec(PL_rsfp_filters);
450 PL_rsfp_filters = Nullav;
453 PL_preprocess = FALSE;
459 PL_doswitches = FALSE;
460 PL_dowarn = G_WARN_OFF;
461 PL_doextract = FALSE;
462 PL_sawampersand = FALSE; /* must save all match strings */
465 Safefree(PL_inplace);
467 SvREFCNT_dec(PL_patchlevel);
470 SvREFCNT_dec(PL_e_script);
471 PL_e_script = Nullsv;
474 /* magical thingies */
476 Safefree(PL_ofs); /* $, */
479 Safefree(PL_ors); /* $\ */
482 SvREFCNT_dec(PL_rs); /* $/ */
485 SvREFCNT_dec(PL_nrs); /* $/ helper */
488 PL_multiline = 0; /* $* */
489 Safefree(PL_osname); /* $^O */
492 SvREFCNT_dec(PL_statname);
493 PL_statname = Nullsv;
496 /* defgv, aka *_ should be taken care of elsewhere */
498 /* clean up after study() */
499 SvREFCNT_dec(PL_lastscream);
500 PL_lastscream = Nullsv;
501 Safefree(PL_screamfirst);
503 Safefree(PL_screamnext);
507 Safefree(PL_efloatbuf);
508 PL_efloatbuf = Nullch;
511 /* startup and shutdown function lists */
512 SvREFCNT_dec(PL_beginav);
513 SvREFCNT_dec(PL_endav);
514 SvREFCNT_dec(PL_checkav);
515 SvREFCNT_dec(PL_initav);
521 /* shortcuts just get cleared */
527 PL_argvoutgv = Nullgv;
529 PL_stderrgv = Nullgv;
530 PL_last_in_gv = Nullgv;
532 PL_debstash = Nullhv;
534 /* reset so print() ends up where we expect */
537 SvREFCNT_dec(PL_argvout_stack);
538 PL_argvout_stack = Nullav;
540 SvREFCNT_dec(PL_modglobal);
541 PL_modglobal = Nullhv;
542 SvREFCNT_dec(PL_preambleav);
543 PL_preambleav = Nullav;
544 SvREFCNT_dec(PL_subname);
546 SvREFCNT_dec(PL_linestr);
548 SvREFCNT_dec(PL_pidstatus);
549 PL_pidstatus = Nullhv;
550 SvREFCNT_dec(PL_toptarget);
551 PL_toptarget = Nullsv;
552 SvREFCNT_dec(PL_bodytarget);
553 PL_bodytarget = Nullsv;
554 PL_formtarget = Nullsv;
556 /* free locale stuff */
557 #ifdef USE_LOCALE_COLLATE
558 Safefree(PL_collation_name);
559 PL_collation_name = Nullch;
562 #ifdef USE_LOCALE_NUMERIC
563 Safefree(PL_numeric_name);
564 PL_numeric_name = Nullch;
567 /* clear utf8 character classes */
568 SvREFCNT_dec(PL_utf8_alnum);
569 SvREFCNT_dec(PL_utf8_alnumc);
570 SvREFCNT_dec(PL_utf8_ascii);
571 SvREFCNT_dec(PL_utf8_alpha);
572 SvREFCNT_dec(PL_utf8_space);
573 SvREFCNT_dec(PL_utf8_cntrl);
574 SvREFCNT_dec(PL_utf8_graph);
575 SvREFCNT_dec(PL_utf8_digit);
576 SvREFCNT_dec(PL_utf8_upper);
577 SvREFCNT_dec(PL_utf8_lower);
578 SvREFCNT_dec(PL_utf8_print);
579 SvREFCNT_dec(PL_utf8_punct);
580 SvREFCNT_dec(PL_utf8_xdigit);
581 SvREFCNT_dec(PL_utf8_mark);
582 SvREFCNT_dec(PL_utf8_toupper);
583 SvREFCNT_dec(PL_utf8_tolower);
584 PL_utf8_alnum = Nullsv;
585 PL_utf8_alnumc = Nullsv;
586 PL_utf8_ascii = Nullsv;
587 PL_utf8_alpha = Nullsv;
588 PL_utf8_space = Nullsv;
589 PL_utf8_cntrl = Nullsv;
590 PL_utf8_graph = Nullsv;
591 PL_utf8_digit = Nullsv;
592 PL_utf8_upper = Nullsv;
593 PL_utf8_lower = Nullsv;
594 PL_utf8_print = Nullsv;
595 PL_utf8_punct = Nullsv;
596 PL_utf8_xdigit = Nullsv;
597 PL_utf8_mark = Nullsv;
598 PL_utf8_toupper = Nullsv;
599 PL_utf8_totitle = Nullsv;
600 PL_utf8_tolower = Nullsv;
602 if (!specialWARN(PL_compiling.cop_warnings))
603 SvREFCNT_dec(PL_compiling.cop_warnings);
604 PL_compiling.cop_warnings = Nullsv;
605 if (!specialCopIO(PL_compiling.cop_io))
606 SvREFCNT_dec(PL_compiling.cop_io);
607 PL_compiling.cop_io = Nullsv;
609 Safefree(CopFILE(&PL_compiling));
610 CopFILE(&PL_compiling) = Nullch;
611 Safefree(CopSTASHPV(&PL_compiling));
613 SvREFCNT_dec(CopFILEGV(&PL_compiling));
614 CopFILEGV(&PL_compiling) = Nullgv;
615 /* cop_stash is not refcounted */
618 /* Prepare to destruct main symbol table. */
623 SvREFCNT_dec(PL_curstname);
624 PL_curstname = Nullsv;
626 /* clear queued errors */
627 SvREFCNT_dec(PL_errors);
631 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
632 if (PL_scopestack_ix != 0)
633 Perl_warner(aTHX_ WARN_INTERNAL,
634 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
635 (long)PL_scopestack_ix);
636 if (PL_savestack_ix != 0)
637 Perl_warner(aTHX_ WARN_INTERNAL,
638 "Unbalanced saves: %ld more saves than restores\n",
639 (long)PL_savestack_ix);
640 if (PL_tmps_floor != -1)
641 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
642 (long)PL_tmps_floor + 1);
643 if (cxstack_ix != -1)
644 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
645 (long)cxstack_ix + 1);
648 /* Now absolutely destruct everything, somehow or other, loops or no. */
650 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
651 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
652 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
653 last_sv_count = PL_sv_count;
656 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
657 SvFLAGS(PL_fdpid) |= SVt_PVAV;
658 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
659 SvFLAGS(PL_strtab) |= SVt_PVHV;
661 AvREAL_off(PL_fdpid); /* no surviving entries */
662 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
665 #ifdef HAVE_INTERP_INTERN
669 /* Destruct the global string table. */
671 /* Yell and reset the HeVAL() slots that are still holding refcounts,
672 * so that sv_free() won't fail on them.
680 max = HvMAX(PL_strtab);
681 array = HvARRAY(PL_strtab);
684 if (hent && ckWARN_d(WARN_INTERNAL)) {
685 Perl_warner(aTHX_ WARN_INTERNAL,
686 "Unbalanced string table refcount: (%d) for \"%s\"",
687 HeVAL(hent) - Nullsv, HeKEY(hent));
688 HeVAL(hent) = Nullsv;
698 SvREFCNT_dec(PL_strtab);
700 /* free special SVs */
702 SvREFCNT(&PL_sv_yes) = 0;
703 sv_clear(&PL_sv_yes);
704 SvANY(&PL_sv_yes) = NULL;
705 SvFLAGS(&PL_sv_yes) = 0;
707 SvREFCNT(&PL_sv_no) = 0;
709 SvANY(&PL_sv_no) = NULL;
710 SvFLAGS(&PL_sv_no) = 0;
712 SvREFCNT(&PL_sv_undef) = 0;
713 SvREADONLY_off(&PL_sv_undef);
715 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
716 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
718 Safefree(PL_origfilename);
719 Safefree(PL_reg_start_tmp);
721 Safefree(PL_reg_curpm);
722 Safefree(PL_reg_poscache);
723 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
724 Safefree(PL_op_mask);
725 Safefree(PL_psig_ptr);
726 Safefree(PL_psig_name);
728 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
730 DEBUG_P(debprofdump());
732 MUTEX_DESTROY(&PL_strtab_mutex);
733 MUTEX_DESTROY(&PL_sv_mutex);
734 MUTEX_DESTROY(&PL_eval_mutex);
735 MUTEX_DESTROY(&PL_cred_mutex);
736 MUTEX_DESTROY(&PL_fdpid_mutex);
737 COND_DESTROY(&PL_eval_cond);
738 #ifdef EMULATE_ATOMIC_REFCOUNTS
739 MUTEX_DESTROY(&PL_svref_mutex);
740 #endif /* EMULATE_ATOMIC_REFCOUNTS */
742 /* As the penultimate thing, free the non-arena SV for thrsv */
743 Safefree(SvPVX(PL_thrsv));
744 Safefree(SvANY(PL_thrsv));
747 #endif /* USE_THREADS */
751 /* As the absolutely last thing, free the non-arena SV for mess() */
754 /* it could have accumulated taint magic */
755 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
758 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
759 moremagic = mg->mg_moremagic;
760 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
761 Safefree(mg->mg_ptr);
765 /* we know that type >= SVt_PV */
766 (void)SvOOK_off(PL_mess_sv);
767 Safefree(SvPVX(PL_mess_sv));
768 Safefree(SvANY(PL_mess_sv));
769 Safefree(PL_mess_sv);
775 =for apidoc perl_free
777 Releases a Perl interpreter. See L<perlembed>.
785 #if defined(PERL_OBJECT)
789 # if defined(PERL_IMPLICIT_SYS)
790 void *host = w32_internal_host;
791 if (PerlProc_lasthost())
794 win32_delete_internal_host(host);
806 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
808 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
809 PL_exitlist[PL_exitlistlen].fn = fn;
810 PL_exitlist[PL_exitlistlen].ptr = ptr;
815 =for apidoc perl_parse
817 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
823 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
832 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
835 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
836 setuid perl scripts securely.\n");
840 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
841 _dyld_lookup_and_bind
842 ("__environ", (unsigned long *) &environ_pointer, NULL);
847 #ifdef USE_ENVIRON_ARRAY
848 PL_origenviron = environ;
853 /* Come here if running an undumped a.out. */
855 PL_origfilename = savepv(argv[0]);
856 PL_do_undump = FALSE;
857 cxstack_ix = -1; /* start label stack again */
859 init_postdump_symbols(argc,argv,env);
864 PL_curpad = AvARRAY(PL_comppad);
865 op_free(PL_main_root);
866 PL_main_root = Nullop;
868 PL_main_start = Nullop;
869 SvREFCNT_dec(PL_main_cv);
873 oldscope = PL_scopestack_ix;
874 PL_dowarn = G_WARN_OFF;
876 #ifdef PERL_FLEXIBLE_EXCEPTIONS
877 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
883 #ifndef PERL_FLEXIBLE_EXCEPTIONS
884 parse_body(env,xsinit);
887 call_list(oldscope, PL_checkav);
894 /* my_exit() was called */
895 while (PL_scopestack_ix > oldscope)
898 PL_curstash = PL_defstash;
900 call_list(oldscope, PL_checkav);
901 ret = STATUS_NATIVE_EXPORT;
904 PerlIO_printf(Perl_error_log, "panic: top_env\n");
912 #ifdef PERL_FLEXIBLE_EXCEPTIONS
914 S_vparse_body(pTHX_ va_list args)
916 char **env = va_arg(args, char**);
917 XSINIT_t xsinit = va_arg(args, XSINIT_t);
919 return parse_body(env, xsinit);
924 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
926 int argc = PL_origargc;
927 char **argv = PL_origargv;
928 char *scriptname = NULL;
930 VOL bool dosearch = FALSE;
935 char *cddir = Nullch;
937 sv_setpvn(PL_linestr,"",0);
938 sv = newSVpvn("",0); /* first used for -I flags */
942 for (argc--,argv++; argc > 0; argc--,argv++) {
943 if (argv[0][0] != '-' || !argv[0][1])
947 validarg = " PHOOEY ";
956 win32_argv2utf8(argc-1, argv+1);
959 #ifndef PERL_STRICT_CR
983 if ((s = moreswitches(s)))
993 #ifdef MACOS_TRADITIONAL
994 /* ignore -e for Dev:Pseudo argument */
995 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
998 if (PL_euid != PL_uid || PL_egid != PL_gid)
999 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1001 PL_e_script = newSVpvn("",0);
1002 filter_add(read_e_script, NULL);
1005 sv_catpv(PL_e_script, s);
1007 sv_catpv(PL_e_script, argv[1]);
1011 Perl_croak(aTHX_ "No code specified for -e");
1012 sv_catpv(PL_e_script, "\n");
1015 case 'I': /* -I handled both here and in moreswitches() */
1017 if (!*++s && (s=argv[1]) != Nullch) {
1022 STRLEN len = strlen(s);
1023 p = savepvn(s, len);
1024 incpush(p, TRUE, TRUE);
1025 sv_catpvn(sv, "-I", 2);
1026 sv_catpvn(sv, p, len);
1027 sv_catpvn(sv, " ", 1);
1031 Perl_croak(aTHX_ "No directory specified for -I");
1035 PL_preprocess = TRUE;
1045 PL_preambleav = newAV();
1046 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1048 PL_Sv = newSVpv("print myconfig();",0);
1050 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1052 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1054 sv_catpv(PL_Sv,"\" Compile-time options:");
1056 sv_catpv(PL_Sv," DEBUGGING");
1058 # ifdef MULTIPLICITY
1059 sv_catpv(PL_Sv," MULTIPLICITY");
1062 sv_catpv(PL_Sv," USE_THREADS");
1064 # ifdef USE_ITHREADS
1065 sv_catpv(PL_Sv," USE_ITHREADS");
1067 # ifdef USE_64_BIT_INT
1068 sv_catpv(PL_Sv," USE_64_BIT_INT");
1070 # ifdef USE_64_BIT_ALL
1071 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1073 # ifdef USE_LONG_DOUBLE
1074 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1076 # ifdef USE_LARGE_FILES
1077 sv_catpv(PL_Sv," USE_LARGE_FILES");
1080 sv_catpv(PL_Sv," USE_SOCKS");
1083 sv_catpv(PL_Sv," PERL_OBJECT");
1085 # ifdef PERL_IMPLICIT_CONTEXT
1086 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1088 # ifdef PERL_IMPLICIT_SYS
1089 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1091 sv_catpv(PL_Sv,"\\n\",");
1093 #if defined(LOCAL_PATCH_COUNT)
1094 if (LOCAL_PATCH_COUNT > 0) {
1096 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1097 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1098 if (PL_localpatches[i])
1099 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1103 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1106 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1108 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1111 sv_catpv(PL_Sv, "; \
1113 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1114 print \" \\%ENV:\\n @env\\n\" if @env; \
1115 print \" \\@INC:\\n @INC\\n\";");
1118 PL_Sv = newSVpv("config_vars(qw(",0);
1119 sv_catpv(PL_Sv, ++s);
1120 sv_catpv(PL_Sv, "))");
1123 av_push(PL_preambleav, PL_Sv);
1124 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1127 PL_doextract = TRUE;
1135 if (!*++s || isSPACE(*s)) {
1139 /* catch use of gnu style long options */
1140 if (strEQ(s, "version")) {
1144 if (strEQ(s, "help")) {
1151 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1157 #ifndef SECURE_INTERNAL_GETENV
1160 (s = PerlEnv_getenv("PERL5OPT")))
1164 if (*s == '-' && *(s+1) == 'T')
1177 if (!strchr("DIMUdmw", *s))
1178 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1179 s = moreswitches(s);
1185 scriptname = argv[0];
1188 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1190 else if (scriptname == Nullch) {
1192 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1200 open_script(scriptname,dosearch,sv,&fdscript);
1202 validate_suid(validarg, scriptname,fdscript);
1205 #if defined(SIGCHLD) || defined(SIGCLD)
1208 # define SIGCHLD SIGCLD
1210 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1211 if (sigstate == SIG_IGN) {
1212 if (ckWARN(WARN_SIGNAL))
1213 Perl_warner(aTHX_ WARN_SIGNAL,
1214 "Can't ignore signal CHLD, forcing to default");
1215 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1221 #ifdef MACOS_TRADITIONAL
1222 if (PL_doextract || gMacPerl_AlwaysExtract) {
1227 if (cddir && PerlDir_chdir(cddir) < 0)
1228 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1232 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1233 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1234 CvUNIQUE_on(PL_compcv);
1236 PL_comppad = newAV();
1237 av_push(PL_comppad, Nullsv);
1238 PL_curpad = AvARRAY(PL_comppad);
1239 PL_comppad_name = newAV();
1240 PL_comppad_name_fill = 0;
1241 PL_min_intro_pending = 0;
1244 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1245 PL_curpad[0] = (SV*)newAV();
1246 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1247 CvOWNER(PL_compcv) = 0;
1248 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1249 MUTEX_INIT(CvMUTEXP(PL_compcv));
1250 #endif /* USE_THREADS */
1252 comppadlist = newAV();
1253 AvREAL_off(comppadlist);
1254 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1255 av_store(comppadlist, 1, (SV*)PL_comppad);
1256 CvPADLIST(PL_compcv) = comppadlist;
1258 boot_core_UNIVERSAL();
1260 boot_core_xsutils();
1264 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1266 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1272 # ifdef HAS_SOCKS5_INIT
1273 socks5_init(argv[0]);
1279 init_predump_symbols();
1280 /* init_postdump_symbols not currently designed to be called */
1281 /* more than once (ENV isn't cleared first, for example) */
1282 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1284 init_postdump_symbols(argc,argv,env);
1288 /* now parse the script */
1290 SETERRNO(0,SS$_NORMAL);
1292 #ifdef MACOS_TRADITIONAL
1293 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1295 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1297 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1298 MacPerl_MPWFileName(PL_origfilename));
1302 if (yyparse() || PL_error_count) {
1304 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1306 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1311 CopLINE_set(PL_curcop, 0);
1312 PL_curstash = PL_defstash;
1313 PL_preprocess = FALSE;
1315 SvREFCNT_dec(PL_e_script);
1316 PL_e_script = Nullsv;
1319 /* now that script is parsed, we can modify record separator */
1320 SvREFCNT_dec(PL_rs);
1321 PL_rs = SvREFCNT_inc(PL_nrs);
1322 sv_setsv(get_sv("/", TRUE), PL_rs);
1327 SAVECOPFILE(PL_curcop);
1328 SAVECOPLINE(PL_curcop);
1329 gv_check(PL_defstash);
1336 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1337 dump_mstats("after compilation:");
1346 =for apidoc perl_run
1348 Tells a Perl interpreter to run. See L<perlembed>.
1363 oldscope = PL_scopestack_ix;
1365 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1367 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1373 cxstack_ix = -1; /* start context stack again */
1375 case 0: /* normal completion */
1376 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1381 case 2: /* my_exit() */
1382 while (PL_scopestack_ix > oldscope)
1385 PL_curstash = PL_defstash;
1386 if (PL_endav && !PL_minus_c)
1387 call_list(oldscope, PL_endav);
1389 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1390 dump_mstats("after execution: ");
1392 ret = STATUS_NATIVE_EXPORT;
1396 POPSTACK_TO(PL_mainstack);
1399 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1409 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1411 S_vrun_body(pTHX_ va_list args)
1413 I32 oldscope = va_arg(args, I32);
1415 return run_body(oldscope);
1421 S_run_body(pTHX_ I32 oldscope)
1423 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1424 PL_sawampersand ? "Enabling" : "Omitting"));
1426 if (!PL_restartop) {
1427 DEBUG_x(dump_all());
1428 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1429 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1433 #ifdef MACOS_TRADITIONAL
1434 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1436 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1440 if (PERLDB_SINGLE && PL_DBsingle)
1441 sv_setiv(PL_DBsingle, 1);
1443 call_list(oldscope, PL_initav);
1449 PL_op = PL_restartop;
1453 else if (PL_main_start) {
1454 CvDEPTH(PL_main_cv) = 1;
1455 PL_op = PL_main_start;
1465 =for apidoc p||get_sv
1467 Returns the SV of the specified Perl scalar. If C<create> is set and the
1468 Perl variable does not exist then it will be created. If C<create> is not
1469 set and the variable does not exist then NULL is returned.
1475 Perl_get_sv(pTHX_ const char *name, I32 create)
1479 if (name[1] == '\0' && !isALPHA(name[0])) {
1480 PADOFFSET tmp = find_threadsv(name);
1481 if (tmp != NOT_IN_PAD)
1482 return THREADSV(tmp);
1484 #endif /* USE_THREADS */
1485 gv = gv_fetchpv(name, create, SVt_PV);
1492 =for apidoc p||get_av
1494 Returns the AV of the specified Perl array. If C<create> is set and the
1495 Perl variable does not exist then it will be created. If C<create> is not
1496 set and the variable does not exist then NULL is returned.
1502 Perl_get_av(pTHX_ const char *name, I32 create)
1504 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1513 =for apidoc p||get_hv
1515 Returns the HV of the specified Perl hash. If C<create> is set and the
1516 Perl variable does not exist then it will be created. If C<create> is not
1517 set and the variable does not exist then NULL is returned.
1523 Perl_get_hv(pTHX_ const char *name, I32 create)
1525 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1534 =for apidoc p||get_cv
1536 Returns the CV of the specified Perl subroutine. If C<create> is set and
1537 the Perl subroutine does not exist then it will be declared (which has the
1538 same effect as saying C<sub name;>). If C<create> is not set and the
1539 subroutine does not exist then NULL is returned.
1545 Perl_get_cv(pTHX_ const char *name, I32 create)
1547 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1548 /* XXX unsafe for threads if eval_owner isn't held */
1549 /* XXX this is probably not what they think they're getting.
1550 * It has the same effect as "sub name;", i.e. just a forward
1552 if (create && !GvCVu(gv))
1553 return newSUB(start_subparse(FALSE, 0),
1554 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1562 /* Be sure to refetch the stack pointer after calling these routines. */
1565 =for apidoc p||call_argv
1567 Performs a callback to the specified Perl sub. See L<perlcall>.
1573 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1575 /* See G_* flags in cop.h */
1576 /* null terminated arg list */
1583 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1588 return call_pv(sub_name, flags);
1592 =for apidoc p||call_pv
1594 Performs a callback to the specified Perl sub. See L<perlcall>.
1600 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1601 /* name of the subroutine */
1602 /* See G_* flags in cop.h */
1604 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1608 =for apidoc p||call_method
1610 Performs a callback to the specified Perl method. The blessed object must
1611 be on the stack. See L<perlcall>.
1617 Perl_call_method(pTHX_ const char *methname, I32 flags)
1618 /* name of the subroutine */
1619 /* See G_* flags in cop.h */
1621 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1624 /* May be called with any of a CV, a GV, or an SV containing the name. */
1626 =for apidoc p||call_sv
1628 Performs a callback to the Perl sub whose name is in the SV. See
1635 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1636 /* See G_* flags in cop.h */
1639 LOGOP myop; /* fake syntax tree node */
1644 bool oldcatch = CATCH_GET;
1649 if (flags & G_DISCARD) {
1654 Zero(&myop, 1, LOGOP);
1655 myop.op_next = Nullop;
1656 if (!(flags & G_NOARGS))
1657 myop.op_flags |= OPf_STACKED;
1658 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1659 (flags & G_ARRAY) ? OPf_WANT_LIST :
1664 EXTEND(PL_stack_sp, 1);
1665 *++PL_stack_sp = sv;
1667 oldscope = PL_scopestack_ix;
1669 if (PERLDB_SUB && PL_curstash != PL_debstash
1670 /* Handle first BEGIN of -d. */
1671 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1672 /* Try harder, since this may have been a sighandler, thus
1673 * curstash may be meaningless. */
1674 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1675 && !(flags & G_NODEBUG))
1676 PL_op->op_private |= OPpENTERSUB_DB;
1678 if (flags & G_METHOD) {
1679 Zero(&method_op, 1, UNOP);
1680 method_op.op_next = PL_op;
1681 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1682 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1683 PL_op = (OP*)&method_op;
1686 if (!(flags & G_EVAL)) {
1688 call_body((OP*)&myop, FALSE);
1689 retval = PL_stack_sp - (PL_stack_base + oldmark);
1690 CATCH_SET(oldcatch);
1693 myop.op_other = (OP*)&myop;
1695 /* we're trying to emulate pp_entertry() here */
1697 register PERL_CONTEXT *cx;
1698 I32 gimme = GIMME_V;
1703 push_return(Nullop);
1704 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1706 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1708 PL_in_eval = EVAL_INEVAL;
1709 if (flags & G_KEEPERR)
1710 PL_in_eval |= EVAL_KEEPERR;
1716 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1718 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1725 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1727 call_body((OP*)&myop, FALSE);
1729 retval = PL_stack_sp - (PL_stack_base + oldmark);
1730 if (!(flags & G_KEEPERR))
1737 /* my_exit() was called */
1738 PL_curstash = PL_defstash;
1741 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1742 Perl_croak(aTHX_ "Callback called exit");
1747 PL_op = PL_restartop;
1751 PL_stack_sp = PL_stack_base + oldmark;
1752 if (flags & G_ARRAY)
1756 *++PL_stack_sp = &PL_sv_undef;
1761 if (PL_scopestack_ix > oldscope) {
1765 register PERL_CONTEXT *cx;
1777 if (flags & G_DISCARD) {
1778 PL_stack_sp = PL_stack_base + oldmark;
1787 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1789 S_vcall_body(pTHX_ va_list args)
1791 OP *myop = va_arg(args, OP*);
1792 int is_eval = va_arg(args, int);
1794 call_body(myop, is_eval);
1800 S_call_body(pTHX_ OP *myop, int is_eval)
1802 if (PL_op == myop) {
1804 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1806 PL_op = Perl_pp_entersub(aTHX); /* this does */
1812 /* Eval a string. The G_EVAL flag is always assumed. */
1815 =for apidoc p||eval_sv
1817 Tells Perl to C<eval> the string in the SV.
1823 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1825 /* See G_* flags in cop.h */
1828 UNOP myop; /* fake syntax tree node */
1829 I32 oldmark = SP - PL_stack_base;
1836 if (flags & G_DISCARD) {
1843 Zero(PL_op, 1, UNOP);
1844 EXTEND(PL_stack_sp, 1);
1845 *++PL_stack_sp = sv;
1846 oldscope = PL_scopestack_ix;
1848 if (!(flags & G_NOARGS))
1849 myop.op_flags = OPf_STACKED;
1850 myop.op_next = Nullop;
1851 myop.op_type = OP_ENTEREVAL;
1852 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1853 (flags & G_ARRAY) ? OPf_WANT_LIST :
1855 if (flags & G_KEEPERR)
1856 myop.op_flags |= OPf_SPECIAL;
1858 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1860 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1867 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1869 call_body((OP*)&myop,TRUE);
1871 retval = PL_stack_sp - (PL_stack_base + oldmark);
1872 if (!(flags & G_KEEPERR))
1879 /* my_exit() was called */
1880 PL_curstash = PL_defstash;
1883 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1884 Perl_croak(aTHX_ "Callback called exit");
1889 PL_op = PL_restartop;
1893 PL_stack_sp = PL_stack_base + oldmark;
1894 if (flags & G_ARRAY)
1898 *++PL_stack_sp = &PL_sv_undef;
1904 if (flags & G_DISCARD) {
1905 PL_stack_sp = PL_stack_base + oldmark;
1915 =for apidoc p||eval_pv
1917 Tells Perl to C<eval> the given string and return an SV* result.
1923 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1926 SV* sv = newSVpv(p, 0);
1928 eval_sv(sv, G_SCALAR);
1935 if (croak_on_error && SvTRUE(ERRSV)) {
1937 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1943 /* Require a module. */
1946 =for apidoc p||require_pv
1948 Tells Perl to C<require> a module.
1954 Perl_require_pv(pTHX_ const char *pv)
1958 PUSHSTACKi(PERLSI_REQUIRE);
1960 sv = sv_newmortal();
1961 sv_setpv(sv, "require '");
1964 eval_sv(sv, G_DISCARD);
1970 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1974 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1975 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1979 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1981 /* This message really ought to be max 23 lines.
1982 * Removed -h because the user already knows that opton. Others? */
1984 static char *usage_msg[] = {
1985 "-0[octal] specify record separator (\\0, if no argument)",
1986 "-a autosplit mode with -n or -p (splits $_ into @F)",
1987 "-C enable native wide character system interfaces",
1988 "-c check syntax only (runs BEGIN and CHECK blocks)",
1989 "-d[:debugger] run program under debugger",
1990 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1991 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1992 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1993 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1994 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1995 "-l[octal] enable line ending processing, specifies line terminator",
1996 "-[mM][-]module execute `use/no module...' before executing program",
1997 "-n assume 'while (<>) { ... }' loop around program",
1998 "-p assume loop like -n but print line also, like sed",
1999 "-P run program through C preprocessor before compilation",
2000 "-s enable rudimentary parsing for switches after programfile",
2001 "-S look for programfile using PATH environment variable",
2002 "-T enable tainting checks",
2003 "-u dump core after parsing program",
2004 "-U allow unsafe operations",
2005 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2006 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2007 "-w enable many useful warnings (RECOMMENDED)",
2008 "-W enable all warnings",
2009 "-X disable all warnings",
2010 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2014 char **p = usage_msg;
2016 PerlIO_printf(PerlIO_stdout(),
2017 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2020 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2023 /* This routine handles any switches that can be given during run */
2026 Perl_moreswitches(pTHX_ char *s)
2034 numlen = 0; /* disallow underscores */
2035 rschar = (U32)scan_oct(s, 4, &numlen);
2036 SvREFCNT_dec(PL_nrs);
2037 if (rschar & ~((U8)~0))
2038 PL_nrs = &PL_sv_undef;
2039 else if (!rschar && numlen >= 2)
2040 PL_nrs = newSVpvn("", 0);
2043 PL_nrs = newSVpvn(&ch, 1);
2048 PL_widesyscalls = TRUE;
2053 PL_splitstr = savepv(s + 1);
2067 /* The following permits -d:Mod to accepts arguments following an =
2068 in the fashion that -MSome::Mod does. */
2069 if (*s == ':' || *s == '=') {
2072 sv = newSVpv("use Devel::", 0);
2074 /* We now allow -d:Module=Foo,Bar */
2075 while(isALNUM(*s) || *s==':') ++s;
2077 sv_catpv(sv, start);
2079 sv_catpvn(sv, start, s-start);
2080 sv_catpv(sv, " split(/,/,q{");
2085 my_setenv("PERL5DB", SvPV(sv, PL_na));
2088 PL_perldb = PERLDB_ALL;
2096 if (isALPHA(s[1])) {
2097 static char debopts[] = "psltocPmfrxuLHXDST";
2100 for (s++; *s && (d = strchr(debopts,*s)); s++)
2101 PL_debug |= 1 << (d - debopts);
2104 PL_debug = atoi(s+1);
2105 for (s++; isDIGIT(*s); s++) ;
2107 PL_debug |= 0x80000000;
2109 if (ckWARN_d(WARN_DEBUGGING))
2110 Perl_warner(aTHX_ WARN_DEBUGGING,
2111 "Recompile perl with -DDEBUGGING to use -D switch\n");
2112 for (s++; isALNUM(*s); s++) ;
2118 usage(PL_origargv[0]);
2122 Safefree(PL_inplace);
2123 PL_inplace = savepv(s+1);
2125 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2128 if (*s == '-') /* Additional switches on #! line. */
2132 case 'I': /* -I handled both here and in parse_perl() */
2135 while (*s && isSPACE(*s))
2140 /* ignore trailing spaces (possibly followed by other switches) */
2142 for (e = p; *e && !isSPACE(*e); e++) ;
2146 } while (*p && *p != '-');
2147 e = savepvn(s, e-s);
2148 incpush(e, TRUE, TRUE);
2155 Perl_croak(aTHX_ "No directory specified for -I");
2163 PL_ors = savepv("\n");
2165 numlen = 0; /* disallow underscores */
2166 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2170 if (RsPARA(PL_nrs)) {
2175 PL_ors = SvPV(PL_nrs, PL_orslen);
2176 PL_ors = savepvn(PL_ors, PL_orslen);
2180 forbid_setid("-M"); /* XXX ? */
2183 forbid_setid("-m"); /* XXX ? */
2188 /* -M-foo == 'no foo' */
2189 if (*s == '-') { use = "no "; ++s; }
2190 sv = newSVpv(use,0);
2192 /* We allow -M'Module qw(Foo Bar)' */
2193 while(isALNUM(*s) || *s==':') ++s;
2195 sv_catpv(sv, start);
2196 if (*(start-1) == 'm') {
2198 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2199 sv_catpv( sv, " ()");
2203 Perl_croak(aTHX_ "Module name required with -%c option",
2205 sv_catpvn(sv, start, s-start);
2206 sv_catpv(sv, " split(/,/,q{");
2212 PL_preambleav = newAV();
2213 av_push(PL_preambleav, sv);
2216 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2228 PL_doswitches = TRUE;
2233 Perl_croak(aTHX_ "Too late for \"-T\" option");
2237 #ifdef MACOS_TRADITIONAL
2238 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2240 PL_do_undump = TRUE;
2248 PerlIO_printf(PerlIO_stdout(),
2249 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2250 PL_patchlevel, ARCHNAME));
2251 #if defined(LOCAL_PATCH_COUNT)
2252 if (LOCAL_PATCH_COUNT > 0)
2253 PerlIO_printf(PerlIO_stdout(),
2254 "\n(with %d registered patch%s, "
2255 "see perl -V for more detail)",
2256 (int)LOCAL_PATCH_COUNT,
2257 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2260 PerlIO_printf(PerlIO_stdout(),
2261 "\n\nCopyright 1987-2000, Larry Wall\n");
2262 #ifdef MACOS_TRADITIONAL
2263 PerlIO_printf(PerlIO_stdout(),
2264 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2267 PerlIO_printf(PerlIO_stdout(),
2268 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2271 PerlIO_printf(PerlIO_stdout(),
2272 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2273 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2276 PerlIO_printf(PerlIO_stdout(),
2277 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2278 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2281 PerlIO_printf(PerlIO_stdout(),
2282 "atariST series port, ++jrb bammi@cadence.com\n");
2285 PerlIO_printf(PerlIO_stdout(),
2286 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2289 PerlIO_printf(PerlIO_stdout(),
2290 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2293 PerlIO_printf(PerlIO_stdout(),
2294 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2297 PerlIO_printf(PerlIO_stdout(),
2298 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2301 PerlIO_printf(PerlIO_stdout(),
2302 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2305 PerlIO_printf(PerlIO_stdout(),
2306 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2309 PerlIO_printf(PerlIO_stdout(),
2310 "MiNT port by Guido Flohr, 1997-1999\n");
2313 PerlIO_printf(PerlIO_stdout(),
2314 "EPOC port by Olaf Flebbe, 1999-2000\n");
2316 #ifdef BINARY_BUILD_NOTICE
2317 BINARY_BUILD_NOTICE;
2319 PerlIO_printf(PerlIO_stdout(),
2321 Perl may be copied only under the terms of either the Artistic License or the\n\
2322 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2323 Complete documentation for Perl, including FAQ lists, should be found on\n\
2324 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2325 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2328 if (! (PL_dowarn & G_WARN_ALL_MASK))
2329 PL_dowarn |= G_WARN_ON;
2333 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2334 PL_compiling.cop_warnings = pWARN_ALL ;
2338 PL_dowarn = G_WARN_ALL_OFF;
2339 PL_compiling.cop_warnings = pWARN_NONE ;
2344 if (s[1] == '-') /* Additional switches on #! line. */
2349 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2355 #ifdef ALTERNATE_SHEBANG
2356 case 'S': /* OS/2 needs -S on "extproc" line. */
2364 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2369 /* compliments of Tom Christiansen */
2371 /* unexec() can be found in the Gnu emacs distribution */
2372 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2375 Perl_my_unexec(pTHX)
2383 prog = newSVpv(BIN_EXP, 0);
2384 sv_catpv(prog, "/perl");
2385 file = newSVpv(PL_origfilename, 0);
2386 sv_catpv(file, ".perldump");
2388 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2389 /* unexec prints msg to stderr in case of failure */
2390 PerlProc_exit(status);
2393 # include <lib$routines.h>
2394 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2396 ABORT(); /* for use with undump */
2401 /* initialize curinterp */
2406 #ifdef PERL_OBJECT /* XXX kludge */
2409 PL_chopset = " \n-"; \
2410 PL_copline = NOLINE; \
2411 PL_curcop = &PL_compiling;\
2412 PL_curcopdb = NULL; \
2414 PL_dumpindent = 4; \
2415 PL_laststatval = -1; \
2416 PL_laststype = OP_STAT; \
2417 PL_maxscream = -1; \
2418 PL_maxsysfd = MAXSYSFD; \
2419 PL_statname = Nullsv; \
2420 PL_tmps_floor = -1; \
2422 PL_op_mask = NULL; \
2423 PL_laststatval = -1; \
2424 PL_laststype = OP_STAT; \
2425 PL_mess_sv = Nullsv; \
2426 PL_splitstr = " "; \
2427 PL_generation = 100; \
2428 PL_exitlist = NULL; \
2429 PL_exitlistlen = 0; \
2431 PL_in_clean_objs = FALSE; \
2432 PL_in_clean_all = FALSE; \
2433 PL_profiledata = NULL; \
2435 PL_rsfp_filters = Nullav; \
2440 # ifdef MULTIPLICITY
2441 # define PERLVAR(var,type)
2442 # define PERLVARA(var,n,type)
2443 # if defined(PERL_IMPLICIT_CONTEXT)
2444 # if defined(USE_THREADS)
2445 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2446 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2447 # else /* !USE_THREADS */
2448 # define PERLVARI(var,type,init) aTHX->var = init;
2449 # define PERLVARIC(var,type,init) aTHX->var = init;
2450 # endif /* USE_THREADS */
2452 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2453 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2455 # include "intrpvar.h"
2456 # ifndef USE_THREADS
2457 # include "thrdvar.h"
2464 # define PERLVAR(var,type)
2465 # define PERLVARA(var,n,type)
2466 # define PERLVARI(var,type,init) PL_##var = init;
2467 # define PERLVARIC(var,type,init) PL_##var = init;
2468 # include "intrpvar.h"
2469 # ifndef USE_THREADS
2470 # include "thrdvar.h"
2482 S_init_main_stash(pTHX)
2486 /* Note that strtab is a rather special HV. Assumptions are made
2487 about not iterating on it, and not adding tie magic to it.
2488 It is properly deallocated in perl_destruct() */
2489 PL_strtab = newHV();
2491 MUTEX_INIT(&PL_strtab_mutex);
2493 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2494 hv_ksplit(PL_strtab, 512);
2496 PL_curstash = PL_defstash = newHV();
2497 PL_curstname = newSVpvn("main",4);
2498 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2499 SvREFCNT_dec(GvHV(gv));
2500 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2502 HvNAME(PL_defstash) = savepv("main");
2503 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2504 GvMULTI_on(PL_incgv);
2505 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2506 GvMULTI_on(PL_hintgv);
2507 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2508 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2509 GvMULTI_on(PL_errgv);
2510 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2511 GvMULTI_on(PL_replgv);
2512 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2513 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2514 sv_setpvn(ERRSV, "", 0);
2515 PL_curstash = PL_defstash;
2516 CopSTASH_set(&PL_compiling, PL_defstash);
2517 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2518 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2519 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2520 /* We must init $/ before switches are processed. */
2521 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2525 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2530 PL_origfilename = savepv("-e");
2533 /* if find_script() returns, it returns a malloc()-ed value */
2534 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2536 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2537 char *s = scriptname + 8;
2538 *fdscript = atoi(s);
2542 scriptname = savepv(s + 1);
2543 Safefree(PL_origfilename);
2544 PL_origfilename = scriptname;
2550 Safefree(CopFILE(PL_curcop));
2552 SvREFCNT_dec(CopFILEGV(PL_curcop));
2554 CopFILE_set(PL_curcop, PL_origfilename);
2555 if (strEQ(PL_origfilename,"-"))
2557 if (*fdscript >= 0) {
2558 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2559 #if defined(HAS_FCNTL) && defined(F_SETFD)
2561 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2564 else if (PL_preprocess) {
2565 char *cpp_cfg = CPPSTDIN;
2566 SV *cpp = newSVpvn("",0);
2567 SV *cmd = NEWSV(0,0);
2569 if (strEQ(cpp_cfg, "cppstdin"))
2570 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2571 sv_catpv(cpp, cpp_cfg);
2573 sv_catpvn(sv, "-I", 2);
2574 sv_catpv(sv,PRIVLIB_EXP);
2576 #if defined(MSDOS) || defined(WIN32)
2577 Perl_sv_setpvf(aTHX_ cmd, "\
2578 sed %s -e \"/^[^#]/b\" \
2579 -e \"/^#[ ]*include[ ]/b\" \
2580 -e \"/^#[ ]*define[ ]/b\" \
2581 -e \"/^#[ ]*if[ ]/b\" \
2582 -e \"/^#[ ]*ifdef[ ]/b\" \
2583 -e \"/^#[ ]*ifndef[ ]/b\" \
2584 -e \"/^#[ ]*else/b\" \
2585 -e \"/^#[ ]*elif[ ]/b\" \
2586 -e \"/^#[ ]*undef[ ]/b\" \
2587 -e \"/^#[ ]*endif/b\" \
2589 %s | %"SVf" -C %"SVf" %s",
2590 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2593 Perl_sv_setpvf(aTHX_ cmd, "\
2594 %s %s -e '/^[^#]/b' \
2595 -e '/^#[ ]*include[ ]/b' \
2596 -e '/^#[ ]*define[ ]/b' \
2597 -e '/^#[ ]*if[ ]/b' \
2598 -e '/^#[ ]*ifdef[ ]/b' \
2599 -e '/^#[ ]*ifndef[ ]/b' \
2600 -e '/^#[ ]*else/b' \
2601 -e '/^#[ ]*elif[ ]/b' \
2602 -e '/^#[ ]*undef[ ]/b' \
2603 -e '/^#[ ]*endif/b' \
2605 %s | %"SVf" %"SVf" %s",
2607 Perl_sv_setpvf(aTHX_ cmd, "\
2608 %s %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",
2626 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2628 scriptname, cpp, sv, CPPMINUS);
2629 PL_doextract = FALSE;
2630 #ifdef IAMSUID /* actually, this is caught earlier */
2631 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2633 (void)seteuid(PL_uid); /* musn't stay setuid root */
2636 (void)setreuid((Uid_t)-1, PL_uid);
2638 #ifdef HAS_SETRESUID
2639 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2641 PerlProc_setuid(PL_uid);
2645 if (PerlProc_geteuid() != PL_uid)
2646 Perl_croak(aTHX_ "Can't do seteuid!\n");
2648 #endif /* IAMSUID */
2649 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2653 else if (!*scriptname) {
2654 forbid_setid("program input from stdin");
2655 PL_rsfp = PerlIO_stdin();
2658 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2659 #if defined(HAS_FCNTL) && defined(F_SETFD)
2661 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2666 #ifndef IAMSUID /* in case script is not readable before setuid */
2668 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2669 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2672 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2673 (int)PERL_REVISION, (int)PERL_VERSION,
2674 (int)PERL_SUBVERSION), PL_origargv);
2675 Perl_croak(aTHX_ "Can't do setuid\n");
2679 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2680 CopFILE(PL_curcop), Strerror(errno));
2685 * I_SYSSTATVFS HAS_FSTATVFS
2687 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2688 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2689 * here so that metaconfig picks them up. */
2693 S_fd_on_nosuid_fs(pTHX_ int fd)
2695 int check_okay = 0; /* able to do all the required sys/libcalls */
2696 int on_nosuid = 0; /* the fd is on a nosuid fs */
2698 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2699 * fstatvfs() is UNIX98.
2700 * fstatfs() is 4.3 BSD.
2701 * ustat()+getmnt() is pre-4.3 BSD.
2702 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2703 * an irrelevant filesystem while trying to reach the right one.
2706 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2708 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2709 defined(HAS_FSTATVFS)
2710 # define FD_ON_NOSUID_CHECK_OKAY
2711 struct statvfs stfs;
2713 check_okay = fstatvfs(fd, &stfs) == 0;
2714 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2715 # endif /* fstatvfs */
2717 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2718 defined(PERL_MOUNT_NOSUID) && \
2719 defined(HAS_FSTATFS) && \
2720 defined(HAS_STRUCT_STATFS) && \
2721 defined(HAS_STRUCT_STATFS_F_FLAGS)
2722 # define FD_ON_NOSUID_CHECK_OKAY
2725 check_okay = fstatfs(fd, &stfs) == 0;
2726 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2727 # endif /* fstatfs */
2729 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2730 defined(PERL_MOUNT_NOSUID) && \
2731 defined(HAS_FSTAT) && \
2732 defined(HAS_USTAT) && \
2733 defined(HAS_GETMNT) && \
2734 defined(HAS_STRUCT_FS_DATA) && \
2736 # define FD_ON_NOSUID_CHECK_OKAY
2739 if (fstat(fd, &fdst) == 0) {
2741 if (ustat(fdst.st_dev, &us) == 0) {
2743 /* NOSTAT_ONE here because we're not examining fields which
2744 * vary between that case and STAT_ONE. */
2745 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2746 size_t cmplen = sizeof(us.f_fname);
2747 if (sizeof(fsd.fd_req.path) < cmplen)
2748 cmplen = sizeof(fsd.fd_req.path);
2749 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2750 fdst.st_dev == fsd.fd_req.dev) {
2752 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2758 # endif /* fstat+ustat+getmnt */
2760 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2761 defined(HAS_GETMNTENT) && \
2762 defined(HAS_HASMNTOPT) && \
2763 defined(MNTOPT_NOSUID)
2764 # define FD_ON_NOSUID_CHECK_OKAY
2765 FILE *mtab = fopen("/etc/mtab", "r");
2766 struct mntent *entry;
2767 struct stat stb, fsb;
2769 if (mtab && (fstat(fd, &stb) == 0)) {
2770 while (entry = getmntent(mtab)) {
2771 if (stat(entry->mnt_dir, &fsb) == 0
2772 && fsb.st_dev == stb.st_dev)
2774 /* found the filesystem */
2776 if (hasmntopt(entry, MNTOPT_NOSUID))
2779 } /* A single fs may well fail its stat(). */
2784 # endif /* getmntent+hasmntopt */
2787 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2790 #endif /* IAMSUID */
2793 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2799 /* do we need to emulate setuid on scripts? */
2801 /* This code is for those BSD systems that have setuid #! scripts disabled
2802 * in the kernel because of a security problem. Merely defining DOSUID
2803 * in perl will not fix that problem, but if you have disabled setuid
2804 * scripts in the kernel, this will attempt to emulate setuid and setgid
2805 * on scripts that have those now-otherwise-useless bits set. The setuid
2806 * root version must be called suidperl or sperlN.NNN. If regular perl
2807 * discovers that it has opened a setuid script, it calls suidperl with
2808 * the same argv that it had. If suidperl finds that the script it has
2809 * just opened is NOT setuid root, it sets the effective uid back to the
2810 * uid. We don't just make perl setuid root because that loses the
2811 * effective uid we had before invoking perl, if it was different from the
2814 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2815 * be defined in suidperl only. suidperl must be setuid root. The
2816 * Configure script will set this up for you if you want it.
2822 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2823 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2824 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2829 #ifndef HAS_SETREUID
2830 /* On this access check to make sure the directories are readable,
2831 * there is actually a small window that the user could use to make
2832 * filename point to an accessible directory. So there is a faint
2833 * chance that someone could execute a setuid script down in a
2834 * non-accessible directory. I don't know what to do about that.
2835 * But I don't think it's too important. The manual lies when
2836 * it says access() is useful in setuid programs.
2838 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2839 Perl_croak(aTHX_ "Permission denied");
2841 /* If we can swap euid and uid, then we can determine access rights
2842 * with a simple stat of the file, and then compare device and
2843 * inode to make sure we did stat() on the same file we opened.
2844 * Then we just have to make sure he or she can execute it.
2847 struct stat tmpstatbuf;
2851 setreuid(PL_euid,PL_uid) < 0
2854 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2857 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2858 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2859 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2860 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2861 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2862 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2863 Perl_croak(aTHX_ "Permission denied");
2865 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2866 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2867 (void)PerlIO_close(PL_rsfp);
2868 Perl_croak(aTHX_ "Permission denied\n");
2872 setreuid(PL_uid,PL_euid) < 0
2874 # if defined(HAS_SETRESUID)
2875 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2878 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2879 Perl_croak(aTHX_ "Can't reswap uid and euid");
2880 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2881 Perl_croak(aTHX_ "Permission denied\n");
2883 #endif /* HAS_SETREUID */
2884 #endif /* IAMSUID */
2886 if (!S_ISREG(PL_statbuf.st_mode))
2887 Perl_croak(aTHX_ "Permission denied");
2888 if (PL_statbuf.st_mode & S_IWOTH)
2889 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2890 PL_doswitches = FALSE; /* -s is insecure in suid */
2891 CopLINE_inc(PL_curcop);
2892 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2893 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2894 Perl_croak(aTHX_ "No #! line");
2895 s = SvPV(PL_linestr,n_a)+2;
2897 while (!isSPACE(*s)) s++;
2898 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2899 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2900 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2901 Perl_croak(aTHX_ "Not a perl script");
2902 while (*s == ' ' || *s == '\t') s++;
2904 * #! arg must be what we saw above. They can invoke it by
2905 * mentioning suidperl explicitly, but they may not add any strange
2906 * arguments beyond what #! says if they do invoke suidperl that way.
2908 len = strlen(validarg);
2909 if (strEQ(validarg," PHOOEY ") ||
2910 strnNE(s,validarg,len) || !isSPACE(s[len]))
2911 Perl_croak(aTHX_ "Args must match #! line");
2914 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2915 PL_euid == PL_statbuf.st_uid)
2917 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2918 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2919 #endif /* IAMSUID */
2921 if (PL_euid) { /* oops, we're not the setuid root perl */
2922 (void)PerlIO_close(PL_rsfp);
2925 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2926 (int)PERL_REVISION, (int)PERL_VERSION,
2927 (int)PERL_SUBVERSION), PL_origargv);
2929 Perl_croak(aTHX_ "Can't do setuid\n");
2932 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2934 (void)setegid(PL_statbuf.st_gid);
2937 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2939 #ifdef HAS_SETRESGID
2940 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2942 PerlProc_setgid(PL_statbuf.st_gid);
2946 if (PerlProc_getegid() != PL_statbuf.st_gid)
2947 Perl_croak(aTHX_ "Can't do setegid!\n");
2949 if (PL_statbuf.st_mode & S_ISUID) {
2950 if (PL_statbuf.st_uid != PL_euid)
2952 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2955 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2957 #ifdef HAS_SETRESUID
2958 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2960 PerlProc_setuid(PL_statbuf.st_uid);
2964 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2965 Perl_croak(aTHX_ "Can't do seteuid!\n");
2967 else if (PL_uid) { /* oops, mustn't run as root */
2969 (void)seteuid((Uid_t)PL_uid);
2972 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2974 #ifdef HAS_SETRESUID
2975 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2977 PerlProc_setuid((Uid_t)PL_uid);
2981 if (PerlProc_geteuid() != PL_uid)
2982 Perl_croak(aTHX_ "Can't do seteuid!\n");
2985 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2986 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2989 else if (PL_preprocess)
2990 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2991 else if (fdscript >= 0)
2992 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2994 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2996 /* We absolutely must clear out any saved ids here, so we */
2997 /* exec the real perl, substituting fd script for scriptname. */
2998 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2999 PerlIO_rewind(PL_rsfp);
3000 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3001 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3002 if (!PL_origargv[which])
3003 Perl_croak(aTHX_ "Permission denied");
3004 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3005 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3006 #if defined(HAS_FCNTL) && defined(F_SETFD)
3007 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3009 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3010 (int)PERL_REVISION, (int)PERL_VERSION,
3011 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3012 Perl_croak(aTHX_ "Can't do setuid\n");
3013 #endif /* IAMSUID */
3015 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3016 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3017 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3018 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3020 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3023 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3024 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3025 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3026 /* not set-id, must be wrapped */
3032 S_find_beginning(pTHX)
3034 register char *s, *s2;
3036 /* skip forward in input to the real script? */
3039 #ifdef MACOS_TRADITIONAL
3040 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3042 while (PL_doextract || gMacPerl_AlwaysExtract) {
3043 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3044 if (!gMacPerl_AlwaysExtract)
3045 Perl_croak(aTHX_ "No Perl script found in input\n");
3047 if (PL_doextract) /* require explicit override ? */
3048 if (!OverrideExtract(PL_origfilename))
3049 Perl_croak(aTHX_ "User aborted script\n");
3051 PL_doextract = FALSE;
3053 /* Pater peccavi, file does not have #! */
3054 PerlIO_rewind(PL_rsfp);
3059 while (PL_doextract) {
3060 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3061 Perl_croak(aTHX_ "No Perl script found in input\n");
3063 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3064 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3065 PL_doextract = FALSE;
3066 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3068 while (*s == ' ' || *s == '\t') s++;
3070 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3071 if (strnEQ(s2-4,"perl",4))
3073 while ((s = moreswitches(s)))
3084 PL_uid = PerlProc_getuid();
3085 PL_euid = PerlProc_geteuid();
3086 PL_gid = PerlProc_getgid();
3087 PL_egid = PerlProc_getegid();
3089 PL_uid |= PL_gid << 16;
3090 PL_euid |= PL_egid << 16;
3092 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3096 S_forbid_setid(pTHX_ char *s)
3098 if (PL_euid != PL_uid)
3099 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3100 if (PL_egid != PL_gid)
3101 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3105 Perl_init_debugger(pTHX)
3107 HV *ostash = PL_curstash;
3109 PL_curstash = PL_debstash;
3110 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3111 AvREAL_off(PL_dbargs);
3112 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3113 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3114 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3115 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3116 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3117 sv_setiv(PL_DBsingle, 0);
3118 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3119 sv_setiv(PL_DBtrace, 0);
3120 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3121 sv_setiv(PL_DBsignal, 0);
3122 PL_curstash = ostash;
3125 #ifndef STRESS_REALLOC
3126 #define REASONABLE(size) (size)
3128 #define REASONABLE(size) (1) /* unreasonable */
3132 Perl_init_stacks(pTHX)
3134 /* start with 128-item stack and 8K cxstack */
3135 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3136 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3137 PL_curstackinfo->si_type = PERLSI_MAIN;
3138 PL_curstack = PL_curstackinfo->si_stack;
3139 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3141 PL_stack_base = AvARRAY(PL_curstack);
3142 PL_stack_sp = PL_stack_base;
3143 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3145 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3148 PL_tmps_max = REASONABLE(128);
3150 New(54,PL_markstack,REASONABLE(32),I32);
3151 PL_markstack_ptr = PL_markstack;
3152 PL_markstack_max = PL_markstack + REASONABLE(32);
3156 New(54,PL_scopestack,REASONABLE(32),I32);
3157 PL_scopestack_ix = 0;
3158 PL_scopestack_max = REASONABLE(32);
3160 New(54,PL_savestack,REASONABLE(128),ANY);
3161 PL_savestack_ix = 0;
3162 PL_savestack_max = REASONABLE(128);
3164 New(54,PL_retstack,REASONABLE(16),OP*);
3166 PL_retstack_max = REASONABLE(16);
3174 while (PL_curstackinfo->si_next)
3175 PL_curstackinfo = PL_curstackinfo->si_next;
3176 while (PL_curstackinfo) {
3177 PERL_SI *p = PL_curstackinfo->si_prev;
3178 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3179 Safefree(PL_curstackinfo->si_cxstack);
3180 Safefree(PL_curstackinfo);
3181 PL_curstackinfo = p;
3183 Safefree(PL_tmps_stack);
3184 Safefree(PL_markstack);
3185 Safefree(PL_scopestack);
3186 Safefree(PL_savestack);
3187 Safefree(PL_retstack);
3191 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3202 lex_start(PL_linestr);
3204 PL_subname = newSVpvn("main",4);
3208 S_init_predump_symbols(pTHX)
3213 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3214 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3215 GvMULTI_on(PL_stdingv);
3216 io = GvIOp(PL_stdingv);
3217 IoIFP(io) = PerlIO_stdin();
3218 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3220 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3222 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3225 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3227 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3229 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3231 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3232 GvMULTI_on(PL_stderrgv);
3233 io = GvIOp(PL_stderrgv);
3234 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3235 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3237 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3239 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3242 Safefree(PL_osname);
3243 PL_osname = savepv(OSNAME);
3247 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3253 argc--,argv++; /* skip name of script */
3254 if (PL_doswitches) {
3255 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3258 if (argv[0][1] == '-' && !argv[0][2]) {
3262 if ((s = strchr(argv[0], '='))) {
3264 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3267 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3270 PL_toptarget = NEWSV(0,0);
3271 sv_upgrade(PL_toptarget, SVt_PVFM);
3272 sv_setpvn(PL_toptarget, "", 0);
3273 PL_bodytarget = NEWSV(0,0);
3274 sv_upgrade(PL_bodytarget, SVt_PVFM);
3275 sv_setpvn(PL_bodytarget, "", 0);
3276 PL_formtarget = PL_bodytarget;
3279 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3280 #ifdef MACOS_TRADITIONAL
3281 /* $0 is not majick on a Mac */
3282 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3284 sv_setpv(GvSV(tmpgv),PL_origfilename);
3285 magicname("0", "0", 1);
3288 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3290 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3292 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3294 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3295 GvMULTI_on(PL_argvgv);
3296 (void)gv_AVadd(PL_argvgv);
3297 av_clear(GvAVn(PL_argvgv));
3298 for (; argc > 0; argc--,argv++) {
3299 SV *sv = newSVpv(argv[0],0);
3300 av_push(GvAVn(PL_argvgv),sv);
3301 if (PL_widesyscalls)
3302 (void)sv_utf8_decode(sv);
3305 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3307 GvMULTI_on(PL_envgv);
3308 hv = GvHVn(PL_envgv);
3309 hv_magic(hv, PL_envgv, 'E');
3310 #ifdef USE_ENVIRON_ARRAY
3311 /* Note that if the supplied env parameter is actually a copy
3312 of the global environ then it may now point to free'd memory
3313 if the environment has been modified since. To avoid this
3314 problem we treat env==NULL as meaning 'use the default'
3319 environ[0] = Nullch;
3320 for (; *env; env++) {
3321 if (!(s = strchr(*env,'=')))
3327 sv = newSVpv(s--,0);
3328 (void)hv_store(hv, *env, s - *env, sv, 0);
3330 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3331 /* Sins of the RTL. See note in my_setenv(). */
3332 (void)PerlEnv_putenv(savepv(*env));
3336 #ifdef DYNAMIC_ENV_FETCH
3337 HvNAME(hv) = savepv(ENV_HV_NAME);
3341 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3342 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3346 S_init_perllib(pTHX)
3351 s = PerlEnv_getenv("PERL5LIB");
3353 incpush(s, TRUE, TRUE);
3355 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3357 /* Treat PERL5?LIB as a possible search list logical name -- the
3358 * "natural" VMS idiom for a Unix path string. We allow each
3359 * element to be a set of |-separated directories for compatibility.
3363 if (my_trnlnm("PERL5LIB",buf,0))
3364 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3366 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3370 /* Use the ~-expanded versions of APPLLIB (undocumented),
3371 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3374 incpush(APPLLIB_EXP, TRUE, TRUE);
3378 incpush(ARCHLIB_EXP, FALSE, FALSE);
3380 #ifdef MACOS_TRADITIONAL
3382 struct stat tmpstatbuf;
3383 SV * privdir = NEWSV(55, 0);
3384 char * macperl = PerlEnv_getenv("MACPERL");
3389 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3390 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3391 incpush(SvPVX(privdir), TRUE, FALSE);
3392 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3393 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3394 incpush(SvPVX(privdir), TRUE, FALSE);
3396 SvREFCNT_dec(privdir);
3399 incpush(":", FALSE, FALSE);
3402 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3405 incpush(PRIVLIB_EXP, TRUE, FALSE);
3407 incpush(PRIVLIB_EXP, FALSE, FALSE);
3411 /* sitearch is always relative to sitelib on Windows for
3412 * DLL-based path intuition to work correctly */
3413 # if !defined(WIN32)
3414 incpush(SITEARCH_EXP, FALSE, FALSE);
3420 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3422 incpush(SITELIB_EXP, FALSE, FALSE);
3426 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3427 incpush(SITELIB_STEM, FALSE, TRUE);
3430 #ifdef PERL_VENDORARCH_EXP
3431 /* vendorarch is always relative to vendorlib on Windows for
3432 * DLL-based path intuition to work correctly */
3433 # if !defined(WIN32)
3434 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3438 #ifdef PERL_VENDORLIB_EXP
3440 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3442 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3446 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3447 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3450 #ifdef PERL_OTHERLIBDIRS
3451 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3455 incpush(".", FALSE, FALSE);
3456 #endif /* MACOS_TRADITIONAL */
3459 #if defined(DOSISH) || defined(EPOC)
3460 # define PERLLIB_SEP ';'
3463 # define PERLLIB_SEP '|'
3465 # if defined(MACOS_TRADITIONAL)
3466 # define PERLLIB_SEP ','
3468 # define PERLLIB_SEP ':'
3472 #ifndef PERLLIB_MANGLE
3473 # define PERLLIB_MANGLE(s,n) (s)
3477 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3479 SV *subdir = Nullsv;
3484 if (addsubdirs || addoldvers) {
3485 subdir = sv_newmortal();
3488 /* Break at all separators */
3490 SV *libdir = NEWSV(55,0);
3493 /* skip any consecutive separators */
3494 while ( *p == PERLLIB_SEP ) {
3495 /* Uncomment the next line for PATH semantics */
3496 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3500 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3501 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3506 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3507 p = Nullch; /* break out */
3509 #ifdef MACOS_TRADITIONAL
3510 if (!strchr(SvPVX(libdir), ':'))
3511 sv_insert(libdir, 0, 0, ":", 1);
3512 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3513 sv_catpv(libdir, ":");
3517 * BEFORE pushing libdir onto @INC we may first push version- and
3518 * archname-specific sub-directories.
3520 if (addsubdirs || addoldvers) {
3521 #ifdef PERL_INC_VERSION_LIST
3522 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3523 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3524 const char **incver;
3526 struct stat tmpstatbuf;
3531 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3533 while (unix[len-1] == '/') len--; /* Cosmetic */
3534 sv_usepvn(libdir,unix,len);
3537 PerlIO_printf(Perl_error_log,
3538 "Failed to unixify @INC element \"%s\"\n",
3542 #ifdef MACOS_TRADITIONAL
3543 #define PERL_AV_SUFFIX_FMT ""
3544 #define PERL_ARCH_FMT ":%s"
3546 #define PERL_AV_SUFFIX_FMT "/"
3547 #define PERL_ARCH_FMT "/%s"
3549 /* .../version/archname if -d .../version/archname */
3550 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3552 (int)PERL_REVISION, (int)PERL_VERSION,
3553 (int)PERL_SUBVERSION, ARCHNAME);
3554 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3555 S_ISDIR(tmpstatbuf.st_mode))
3556 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3558 /* .../version if -d .../version */
3559 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3560 (int)PERL_REVISION, (int)PERL_VERSION,
3561 (int)PERL_SUBVERSION);
3562 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3563 S_ISDIR(tmpstatbuf.st_mode))
3564 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3566 /* .../archname if -d .../archname */
3567 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3568 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3569 S_ISDIR(tmpstatbuf.st_mode))
3570 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3573 #ifdef PERL_INC_VERSION_LIST
3575 for (incver = incverlist; *incver; incver++) {
3576 /* .../xxx if -d .../xxx */
3577 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3578 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3579 S_ISDIR(tmpstatbuf.st_mode))
3580 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3586 /* finally push this lib directory on the end of @INC */
3587 av_push(GvAVn(PL_incgv), libdir);
3592 STATIC struct perl_thread *
3593 S_init_main_thread(pTHX)
3595 #if !defined(PERL_IMPLICIT_CONTEXT)
3596 struct perl_thread *thr;
3600 Newz(53, thr, 1, struct perl_thread);
3601 PL_curcop = &PL_compiling;
3602 thr->interp = PERL_GET_INTERP;
3603 thr->cvcache = newHV();
3604 thr->threadsv = newAV();
3605 /* thr->threadsvp is set when find_threadsv is called */
3606 thr->specific = newAV();
3607 thr->flags = THRf_R_JOINABLE;
3608 MUTEX_INIT(&thr->mutex);
3609 /* Handcraft thrsv similarly to mess_sv */
3610 New(53, PL_thrsv, 1, SV);
3611 Newz(53, xpv, 1, XPV);
3612 SvFLAGS(PL_thrsv) = SVt_PV;
3613 SvANY(PL_thrsv) = (void*)xpv;
3614 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3615 SvPVX(PL_thrsv) = (char*)thr;
3616 SvCUR_set(PL_thrsv, sizeof(thr));
3617 SvLEN_set(PL_thrsv, sizeof(thr));
3618 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3619 thr->oursv = PL_thrsv;
3620 PL_chopset = " \n-";
3623 MUTEX_LOCK(&PL_threads_mutex);
3629 MUTEX_UNLOCK(&PL_threads_mutex);
3631 #ifdef HAVE_THREAD_INTERN
3632 Perl_init_thread_intern(thr);
3635 #ifdef SET_THREAD_SELF
3636 SET_THREAD_SELF(thr);
3638 thr->self = pthread_self();
3639 #endif /* SET_THREAD_SELF */
3643 * These must come after the thread self setting
3644 * because sv_setpvn does SvTAINT and the taint
3645 * fields thread selfness being set.
3647 PL_toptarget = NEWSV(0,0);
3648 sv_upgrade(PL_toptarget, SVt_PVFM);
3649 sv_setpvn(PL_toptarget, "", 0);
3650 PL_bodytarget = NEWSV(0,0);
3651 sv_upgrade(PL_bodytarget, SVt_PVFM);
3652 sv_setpvn(PL_bodytarget, "", 0);
3653 PL_formtarget = PL_bodytarget;
3654 thr->errsv = newSVpvn("", 0);
3655 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3658 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3659 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3660 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3661 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3662 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3664 PL_reginterp_cnt = 0;
3668 #endif /* USE_THREADS */
3671 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3674 line_t oldline = CopLINE(PL_curcop);
3680 while (AvFILL(paramList) >= 0) {
3681 cv = (CV*)av_shift(paramList);
3682 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3683 /* save PL_beginav for compiler */
3684 if (! PL_beginav_save)
3685 PL_beginav_save = newAV();
3686 av_push(PL_beginav_save, (SV*)cv);
3690 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3691 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3697 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3701 (void)SvPV(atsv, len);
3704 PL_curcop = &PL_compiling;
3705 CopLINE_set(PL_curcop, oldline);
3706 if (paramList == PL_beginav)
3707 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3709 Perl_sv_catpvf(aTHX_ atsv,
3710 "%s failed--call queue aborted",
3711 paramList == PL_checkav ? "CHECK"
3712 : paramList == PL_initav ? "INIT"
3714 while (PL_scopestack_ix > oldscope)
3717 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3724 /* my_exit() was called */
3725 while (PL_scopestack_ix > oldscope)
3728 PL_curstash = PL_defstash;
3729 PL_curcop = &PL_compiling;
3730 CopLINE_set(PL_curcop, oldline);
3732 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3733 if (paramList == PL_beginav)
3734 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3736 Perl_croak(aTHX_ "%s failed--call queue aborted",
3737 paramList == PL_checkav ? "CHECK"
3738 : paramList == PL_initav ? "INIT"
3745 PL_curcop = &PL_compiling;
3746 CopLINE_set(PL_curcop, oldline);
3749 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3757 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3759 S_vcall_list_body(pTHX_ va_list args)
3761 CV *cv = va_arg(args, CV*);
3762 return call_list_body(cv);
3767 S_call_list_body(pTHX_ CV *cv)
3769 PUSHMARK(PL_stack_sp);
3770 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3775 Perl_my_exit(pTHX_ U32 status)
3777 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3778 thr, (unsigned long) status));
3787 STATUS_NATIVE_SET(status);
3794 Perl_my_failure_exit(pTHX)
3797 if (vaxc$errno & 1) {
3798 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3799 STATUS_NATIVE_SET(44);
3802 if (!vaxc$errno && errno) /* unlikely */
3803 STATUS_NATIVE_SET(44);
3805 STATUS_NATIVE_SET(vaxc$errno);
3810 STATUS_POSIX_SET(errno);
3812 exitstatus = STATUS_POSIX >> 8;
3813 if (exitstatus & 255)
3814 STATUS_POSIX_SET(exitstatus);
3816 STATUS_POSIX_SET(255);
3823 S_my_exit_jump(pTHX)
3825 register PERL_CONTEXT *cx;
3830 SvREFCNT_dec(PL_e_script);
3831 PL_e_script = Nullsv;
3834 POPSTACK_TO(PL_mainstack);
3835 if (cxstack_ix >= 0) {
3838 POPBLOCK(cx,PL_curpm);
3850 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3853 p = SvPVX(PL_e_script);
3854 nl = strchr(p, '\n');
3855 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3857 filter_del(read_e_script);
3860 sv_catpvn(buf_sv, p, nl-p);
3861 sv_chop(PL_e_script, nl);