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 /* 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 SvREFCNT_dec(PL_ofs_sv); /* $, */
479 SvREFCNT_dec(PL_ors_sv); /* $\ */
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;
565 SvREFCNT_dec(PL_numeric_radix);
568 /* clear utf8 character classes */
569 SvREFCNT_dec(PL_utf8_alnum);
570 SvREFCNT_dec(PL_utf8_alnumc);
571 SvREFCNT_dec(PL_utf8_ascii);
572 SvREFCNT_dec(PL_utf8_alpha);
573 SvREFCNT_dec(PL_utf8_space);
574 SvREFCNT_dec(PL_utf8_cntrl);
575 SvREFCNT_dec(PL_utf8_graph);
576 SvREFCNT_dec(PL_utf8_digit);
577 SvREFCNT_dec(PL_utf8_upper);
578 SvREFCNT_dec(PL_utf8_lower);
579 SvREFCNT_dec(PL_utf8_print);
580 SvREFCNT_dec(PL_utf8_punct);
581 SvREFCNT_dec(PL_utf8_xdigit);
582 SvREFCNT_dec(PL_utf8_mark);
583 SvREFCNT_dec(PL_utf8_toupper);
584 SvREFCNT_dec(PL_utf8_tolower);
585 PL_utf8_alnum = Nullsv;
586 PL_utf8_alnumc = Nullsv;
587 PL_utf8_ascii = Nullsv;
588 PL_utf8_alpha = Nullsv;
589 PL_utf8_space = Nullsv;
590 PL_utf8_cntrl = Nullsv;
591 PL_utf8_graph = Nullsv;
592 PL_utf8_digit = Nullsv;
593 PL_utf8_upper = Nullsv;
594 PL_utf8_lower = Nullsv;
595 PL_utf8_print = Nullsv;
596 PL_utf8_punct = Nullsv;
597 PL_utf8_xdigit = Nullsv;
598 PL_utf8_mark = Nullsv;
599 PL_utf8_toupper = Nullsv;
600 PL_utf8_totitle = Nullsv;
601 PL_utf8_tolower = Nullsv;
603 if (!specialWARN(PL_compiling.cop_warnings))
604 SvREFCNT_dec(PL_compiling.cop_warnings);
605 PL_compiling.cop_warnings = Nullsv;
606 if (!specialCopIO(PL_compiling.cop_io))
607 SvREFCNT_dec(PL_compiling.cop_io);
608 PL_compiling.cop_io = Nullsv;
610 Safefree(CopFILE(&PL_compiling));
611 CopFILE(&PL_compiling) = Nullch;
612 Safefree(CopSTASHPV(&PL_compiling));
614 SvREFCNT_dec(CopFILEGV(&PL_compiling));
615 CopFILEGV(&PL_compiling) = Nullgv;
616 /* cop_stash is not refcounted */
619 /* Prepare to destruct main symbol table. */
624 SvREFCNT_dec(PL_curstname);
625 PL_curstname = Nullsv;
627 /* clear queued errors */
628 SvREFCNT_dec(PL_errors);
632 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
633 if (PL_scopestack_ix != 0)
634 Perl_warner(aTHX_ WARN_INTERNAL,
635 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
636 (long)PL_scopestack_ix);
637 if (PL_savestack_ix != 0)
638 Perl_warner(aTHX_ WARN_INTERNAL,
639 "Unbalanced saves: %ld more saves than restores\n",
640 (long)PL_savestack_ix);
641 if (PL_tmps_floor != -1)
642 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
643 (long)PL_tmps_floor + 1);
644 if (cxstack_ix != -1)
645 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
646 (long)cxstack_ix + 1);
649 /* Now absolutely destruct everything, somehow or other, loops or no. */
651 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
652 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
653 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
654 last_sv_count = PL_sv_count;
657 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
658 SvFLAGS(PL_fdpid) |= SVt_PVAV;
659 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
660 SvFLAGS(PL_strtab) |= SVt_PVHV;
662 AvREAL_off(PL_fdpid); /* no surviving entries */
663 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
666 #ifdef HAVE_INTERP_INTERN
670 /* Destruct the global string table. */
672 /* Yell and reset the HeVAL() slots that are still holding refcounts,
673 * so that sv_free() won't fail on them.
681 max = HvMAX(PL_strtab);
682 array = HvARRAY(PL_strtab);
685 if (hent && ckWARN_d(WARN_INTERNAL)) {
686 Perl_warner(aTHX_ WARN_INTERNAL,
687 "Unbalanced string table refcount: (%d) for \"%s\"",
688 HeVAL(hent) - Nullsv, HeKEY(hent));
689 HeVAL(hent) = Nullsv;
699 SvREFCNT_dec(PL_strtab);
701 /* free special SVs */
703 SvREFCNT(&PL_sv_yes) = 0;
704 sv_clear(&PL_sv_yes);
705 SvANY(&PL_sv_yes) = NULL;
706 SvFLAGS(&PL_sv_yes) = 0;
708 SvREFCNT(&PL_sv_no) = 0;
710 SvANY(&PL_sv_no) = NULL;
711 SvFLAGS(&PL_sv_no) = 0;
713 SvREFCNT(&PL_sv_undef) = 0;
714 SvREADONLY_off(&PL_sv_undef);
716 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
717 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
719 Safefree(PL_origfilename);
720 Safefree(PL_reg_start_tmp);
722 Safefree(PL_reg_curpm);
723 Safefree(PL_reg_poscache);
724 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
725 Safefree(PL_op_mask);
726 Safefree(PL_psig_ptr);
727 Safefree(PL_psig_name);
728 Safefree(PL_psig_pend);
730 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
732 DEBUG_P(debprofdump());
734 MUTEX_DESTROY(&PL_strtab_mutex);
735 MUTEX_DESTROY(&PL_sv_mutex);
736 MUTEX_DESTROY(&PL_eval_mutex);
737 MUTEX_DESTROY(&PL_cred_mutex);
738 MUTEX_DESTROY(&PL_fdpid_mutex);
739 COND_DESTROY(&PL_eval_cond);
740 #ifdef EMULATE_ATOMIC_REFCOUNTS
741 MUTEX_DESTROY(&PL_svref_mutex);
742 #endif /* EMULATE_ATOMIC_REFCOUNTS */
744 /* As the penultimate thing, free the non-arena SV for thrsv */
745 Safefree(SvPVX(PL_thrsv));
746 Safefree(SvANY(PL_thrsv));
749 #endif /* USE_THREADS */
753 /* As the absolutely last thing, free the non-arena SV for mess() */
756 /* it could have accumulated taint magic */
757 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
760 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
761 moremagic = mg->mg_moremagic;
762 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
763 Safefree(mg->mg_ptr);
767 /* we know that type >= SVt_PV */
768 (void)SvOOK_off(PL_mess_sv);
769 Safefree(SvPVX(PL_mess_sv));
770 Safefree(SvANY(PL_mess_sv));
771 Safefree(PL_mess_sv);
777 =for apidoc perl_free
779 Releases a Perl interpreter. See L<perlembed>.
787 #if defined(PERL_OBJECT)
791 # if defined(PERL_IMPLICIT_SYS)
792 void *host = w32_internal_host;
793 if (PerlProc_lasthost()) {
797 win32_delete_internal_host(host);
809 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
811 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
812 PL_exitlist[PL_exitlistlen].fn = fn;
813 PL_exitlist[PL_exitlistlen].ptr = ptr;
818 =for apidoc perl_parse
820 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
826 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
835 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
838 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
839 setuid perl scripts securely.\n");
843 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
844 _dyld_lookup_and_bind
845 ("__environ", (unsigned long *) &environ_pointer, NULL);
850 #ifdef USE_ENVIRON_ARRAY
851 PL_origenviron = environ;
856 /* Come here if running an undumped a.out. */
858 PL_origfilename = savepv(argv[0]);
859 PL_do_undump = FALSE;
860 cxstack_ix = -1; /* start label stack again */
862 init_postdump_symbols(argc,argv,env);
867 PL_curpad = AvARRAY(PL_comppad);
868 op_free(PL_main_root);
869 PL_main_root = Nullop;
871 PL_main_start = Nullop;
872 SvREFCNT_dec(PL_main_cv);
876 oldscope = PL_scopestack_ix;
877 PL_dowarn = G_WARN_OFF;
879 #ifdef PERL_FLEXIBLE_EXCEPTIONS
880 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
886 #ifndef PERL_FLEXIBLE_EXCEPTIONS
887 parse_body(env,xsinit);
890 call_list(oldscope, PL_checkav);
897 /* my_exit() was called */
898 while (PL_scopestack_ix > oldscope)
901 PL_curstash = PL_defstash;
903 call_list(oldscope, PL_checkav);
904 ret = STATUS_NATIVE_EXPORT;
907 PerlIO_printf(Perl_error_log, "panic: top_env\n");
915 #ifdef PERL_FLEXIBLE_EXCEPTIONS
917 S_vparse_body(pTHX_ va_list args)
919 char **env = va_arg(args, char**);
920 XSINIT_t xsinit = va_arg(args, XSINIT_t);
922 return parse_body(env, xsinit);
927 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
929 int argc = PL_origargc;
930 char **argv = PL_origargv;
931 char *scriptname = NULL;
933 VOL bool dosearch = FALSE;
938 char *cddir = Nullch;
940 sv_setpvn(PL_linestr,"",0);
941 sv = newSVpvn("",0); /* first used for -I flags */
945 for (argc--,argv++; argc > 0; argc--,argv++) {
946 if (argv[0][0] != '-' || !argv[0][1])
950 validarg = " PHOOEY ";
959 win32_argv2utf8(argc-1, argv+1);
962 #ifndef PERL_STRICT_CR
986 if ((s = moreswitches(s)))
996 #ifdef MACOS_TRADITIONAL
997 /* ignore -e for Dev:Pseudo argument */
998 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
1001 if (PL_euid != PL_uid || PL_egid != PL_gid)
1002 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
1004 PL_e_script = newSVpvn("",0);
1005 filter_add(read_e_script, NULL);
1008 sv_catpv(PL_e_script, s);
1010 sv_catpv(PL_e_script, argv[1]);
1014 Perl_croak(aTHX_ "No code specified for -e");
1015 sv_catpv(PL_e_script, "\n");
1018 case 'I': /* -I handled both here and in moreswitches() */
1020 if (!*++s && (s=argv[1]) != Nullch) {
1025 STRLEN len = strlen(s);
1026 p = savepvn(s, len);
1027 incpush(p, TRUE, TRUE);
1028 sv_catpvn(sv, "-I", 2);
1029 sv_catpvn(sv, p, len);
1030 sv_catpvn(sv, " ", 1);
1034 Perl_croak(aTHX_ "No directory specified for -I");
1038 PL_preprocess = TRUE;
1048 PL_preambleav = newAV();
1049 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1051 PL_Sv = newSVpv("print myconfig();",0);
1053 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1055 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1057 sv_catpv(PL_Sv,"\" Compile-time options:");
1059 sv_catpv(PL_Sv," DEBUGGING");
1061 # ifdef MULTIPLICITY
1062 sv_catpv(PL_Sv," MULTIPLICITY");
1065 sv_catpv(PL_Sv," USE_THREADS");
1067 # ifdef USE_ITHREADS
1068 sv_catpv(PL_Sv," USE_ITHREADS");
1070 # ifdef USE_64_BIT_INT
1071 sv_catpv(PL_Sv," USE_64_BIT_INT");
1073 # ifdef USE_64_BIT_ALL
1074 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1076 # ifdef USE_LONG_DOUBLE
1077 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1079 # ifdef USE_LARGE_FILES
1080 sv_catpv(PL_Sv," USE_LARGE_FILES");
1083 sv_catpv(PL_Sv," USE_SOCKS");
1086 sv_catpv(PL_Sv," PERL_OBJECT");
1088 # ifdef PERL_IMPLICIT_CONTEXT
1089 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1091 # ifdef PERL_IMPLICIT_SYS
1092 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1094 sv_catpv(PL_Sv,"\\n\",");
1096 #if defined(LOCAL_PATCH_COUNT)
1097 if (LOCAL_PATCH_COUNT > 0) {
1099 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1100 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1101 if (PL_localpatches[i])
1102 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1106 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1109 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1111 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1114 sv_catpv(PL_Sv, "; \
1116 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1117 print \" \\%ENV:\\n @env\\n\" if @env; \
1118 print \" \\@INC:\\n @INC\\n\";");
1121 PL_Sv = newSVpv("config_vars(qw(",0);
1122 sv_catpv(PL_Sv, ++s);
1123 sv_catpv(PL_Sv, "))");
1126 av_push(PL_preambleav, PL_Sv);
1127 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1130 PL_doextract = TRUE;
1138 if (!*++s || isSPACE(*s)) {
1142 /* catch use of gnu style long options */
1143 if (strEQ(s, "version")) {
1147 if (strEQ(s, "help")) {
1154 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1160 #ifndef SECURE_INTERNAL_GETENV
1163 (s = PerlEnv_getenv("PERL5OPT")))
1167 if (*s == '-' && *(s+1) == 'T')
1180 if (!strchr("DIMUdmw", *s))
1181 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1182 s = moreswitches(s);
1188 scriptname = argv[0];
1191 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1193 else if (scriptname == Nullch) {
1195 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1203 open_script(scriptname,dosearch,sv,&fdscript);
1205 validate_suid(validarg, scriptname,fdscript);
1208 #if defined(SIGCHLD) || defined(SIGCLD)
1211 # define SIGCHLD SIGCLD
1213 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1214 if (sigstate == SIG_IGN) {
1215 if (ckWARN(WARN_SIGNAL))
1216 Perl_warner(aTHX_ WARN_SIGNAL,
1217 "Can't ignore signal CHLD, forcing to default");
1218 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1224 #ifdef MACOS_TRADITIONAL
1225 if (PL_doextract || gMacPerl_AlwaysExtract) {
1230 if (cddir && PerlDir_chdir(cddir) < 0)
1231 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1235 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1236 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1237 CvUNIQUE_on(PL_compcv);
1239 PL_comppad = newAV();
1240 av_push(PL_comppad, Nullsv);
1241 PL_curpad = AvARRAY(PL_comppad);
1242 PL_comppad_name = newAV();
1243 PL_comppad_name_fill = 0;
1244 PL_min_intro_pending = 0;
1247 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1248 PL_curpad[0] = (SV*)newAV();
1249 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1250 CvOWNER(PL_compcv) = 0;
1251 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1252 MUTEX_INIT(CvMUTEXP(PL_compcv));
1253 #endif /* USE_THREADS */
1255 comppadlist = newAV();
1256 AvREAL_off(comppadlist);
1257 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1258 av_store(comppadlist, 1, (SV*)PL_comppad);
1259 CvPADLIST(PL_compcv) = comppadlist;
1261 boot_core_UNIVERSAL();
1263 boot_core_xsutils();
1267 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1269 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1275 # ifdef HAS_SOCKS5_INIT
1276 socks5_init(argv[0]);
1282 init_predump_symbols();
1283 /* init_postdump_symbols not currently designed to be called */
1284 /* more than once (ENV isn't cleared first, for example) */
1285 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1287 init_postdump_symbols(argc,argv,env);
1291 /* now parse the script */
1293 SETERRNO(0,SS$_NORMAL);
1295 #ifdef MACOS_TRADITIONAL
1296 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1298 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1300 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1301 MacPerl_MPWFileName(PL_origfilename));
1305 if (yyparse() || PL_error_count) {
1307 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1309 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1314 CopLINE_set(PL_curcop, 0);
1315 PL_curstash = PL_defstash;
1316 PL_preprocess = FALSE;
1318 SvREFCNT_dec(PL_e_script);
1319 PL_e_script = Nullsv;
1322 /* now that script is parsed, we can modify record separator */
1323 SvREFCNT_dec(PL_rs);
1324 PL_rs = SvREFCNT_inc(PL_nrs);
1325 sv_setsv(get_sv("/", TRUE), PL_rs);
1330 SAVECOPFILE(PL_curcop);
1331 SAVECOPLINE(PL_curcop);
1332 gv_check(PL_defstash);
1339 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1340 dump_mstats("after compilation:");
1349 =for apidoc perl_run
1351 Tells a Perl interpreter to run. See L<perlembed>.
1366 oldscope = PL_scopestack_ix;
1368 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1370 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1376 cxstack_ix = -1; /* start context stack again */
1378 case 0: /* normal completion */
1379 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1384 case 2: /* my_exit() */
1385 while (PL_scopestack_ix > oldscope)
1388 PL_curstash = PL_defstash;
1389 if (PL_endav && !PL_minus_c)
1390 call_list(oldscope, PL_endav);
1392 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1393 dump_mstats("after execution: ");
1395 ret = STATUS_NATIVE_EXPORT;
1399 POPSTACK_TO(PL_mainstack);
1402 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1412 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1414 S_vrun_body(pTHX_ va_list args)
1416 I32 oldscope = va_arg(args, I32);
1418 return run_body(oldscope);
1424 S_run_body(pTHX_ I32 oldscope)
1426 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1427 PL_sawampersand ? "Enabling" : "Omitting"));
1429 if (!PL_restartop) {
1430 DEBUG_x(dump_all());
1431 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1432 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1436 #ifdef MACOS_TRADITIONAL
1437 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1439 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1443 if (PERLDB_SINGLE && PL_DBsingle)
1444 sv_setiv(PL_DBsingle, 1);
1446 call_list(oldscope, PL_initav);
1452 PL_op = PL_restartop;
1456 else if (PL_main_start) {
1457 CvDEPTH(PL_main_cv) = 1;
1458 PL_op = PL_main_start;
1468 =for apidoc p||get_sv
1470 Returns the SV of the specified Perl scalar. If C<create> is set and the
1471 Perl variable does not exist then it will be created. If C<create> is not
1472 set and the variable does not exist then NULL is returned.
1478 Perl_get_sv(pTHX_ const char *name, I32 create)
1482 if (name[1] == '\0' && !isALPHA(name[0])) {
1483 PADOFFSET tmp = find_threadsv(name);
1484 if (tmp != NOT_IN_PAD)
1485 return THREADSV(tmp);
1487 #endif /* USE_THREADS */
1488 gv = gv_fetchpv(name, create, SVt_PV);
1495 =for apidoc p||get_av
1497 Returns the AV of the specified Perl array. If C<create> is set and the
1498 Perl variable does not exist then it will be created. If C<create> is not
1499 set and the variable does not exist then NULL is returned.
1505 Perl_get_av(pTHX_ const char *name, I32 create)
1507 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1516 =for apidoc p||get_hv
1518 Returns the HV of the specified Perl hash. If C<create> is set and the
1519 Perl variable does not exist then it will be created. If C<create> is not
1520 set and the variable does not exist then NULL is returned.
1526 Perl_get_hv(pTHX_ const char *name, I32 create)
1528 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1537 =for apidoc p||get_cv
1539 Returns the CV of the specified Perl subroutine. If C<create> is set and
1540 the Perl subroutine does not exist then it will be declared (which has the
1541 same effect as saying C<sub name;>). If C<create> is not set and the
1542 subroutine does not exist then NULL is returned.
1548 Perl_get_cv(pTHX_ const char *name, I32 create)
1550 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1551 /* XXX unsafe for threads if eval_owner isn't held */
1552 /* XXX this is probably not what they think they're getting.
1553 * It has the same effect as "sub name;", i.e. just a forward
1555 if (create && !GvCVu(gv))
1556 return newSUB(start_subparse(FALSE, 0),
1557 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1565 /* Be sure to refetch the stack pointer after calling these routines. */
1568 =for apidoc p||call_argv
1570 Performs a callback to the specified Perl sub. See L<perlcall>.
1576 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1578 /* See G_* flags in cop.h */
1579 /* null terminated arg list */
1586 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1591 return call_pv(sub_name, flags);
1595 =for apidoc p||call_pv
1597 Performs a callback to the specified Perl sub. See L<perlcall>.
1603 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1604 /* name of the subroutine */
1605 /* See G_* flags in cop.h */
1607 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1611 =for apidoc p||call_method
1613 Performs a callback to the specified Perl method. The blessed object must
1614 be on the stack. See L<perlcall>.
1620 Perl_call_method(pTHX_ const char *methname, I32 flags)
1621 /* name of the subroutine */
1622 /* See G_* flags in cop.h */
1624 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1627 /* May be called with any of a CV, a GV, or an SV containing the name. */
1629 =for apidoc p||call_sv
1631 Performs a callback to the Perl sub whose name is in the SV. See
1638 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1639 /* See G_* flags in cop.h */
1642 LOGOP myop; /* fake syntax tree node */
1647 bool oldcatch = CATCH_GET;
1652 if (flags & G_DISCARD) {
1657 Zero(&myop, 1, LOGOP);
1658 myop.op_next = Nullop;
1659 if (!(flags & G_NOARGS))
1660 myop.op_flags |= OPf_STACKED;
1661 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1662 (flags & G_ARRAY) ? OPf_WANT_LIST :
1667 EXTEND(PL_stack_sp, 1);
1668 *++PL_stack_sp = sv;
1670 oldscope = PL_scopestack_ix;
1672 if (PERLDB_SUB && PL_curstash != PL_debstash
1673 /* Handle first BEGIN of -d. */
1674 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1675 /* Try harder, since this may have been a sighandler, thus
1676 * curstash may be meaningless. */
1677 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1678 && !(flags & G_NODEBUG))
1679 PL_op->op_private |= OPpENTERSUB_DB;
1681 if (flags & G_METHOD) {
1682 Zero(&method_op, 1, UNOP);
1683 method_op.op_next = PL_op;
1684 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1685 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1686 PL_op = (OP*)&method_op;
1689 if (!(flags & G_EVAL)) {
1691 call_body((OP*)&myop, FALSE);
1692 retval = PL_stack_sp - (PL_stack_base + oldmark);
1693 CATCH_SET(oldcatch);
1696 myop.op_other = (OP*)&myop;
1698 /* we're trying to emulate pp_entertry() here */
1700 register PERL_CONTEXT *cx;
1701 I32 gimme = GIMME_V;
1706 push_return(Nullop);
1707 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1709 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1711 PL_in_eval = EVAL_INEVAL;
1712 if (flags & G_KEEPERR)
1713 PL_in_eval |= EVAL_KEEPERR;
1719 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1721 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1728 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1730 call_body((OP*)&myop, FALSE);
1732 retval = PL_stack_sp - (PL_stack_base + oldmark);
1733 if (!(flags & G_KEEPERR))
1740 /* my_exit() was called */
1741 PL_curstash = PL_defstash;
1744 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1745 Perl_croak(aTHX_ "Callback called exit");
1750 PL_op = PL_restartop;
1754 PL_stack_sp = PL_stack_base + oldmark;
1755 if (flags & G_ARRAY)
1759 *++PL_stack_sp = &PL_sv_undef;
1764 if (PL_scopestack_ix > oldscope) {
1768 register PERL_CONTEXT *cx;
1780 if (flags & G_DISCARD) {
1781 PL_stack_sp = PL_stack_base + oldmark;
1790 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1792 S_vcall_body(pTHX_ va_list args)
1794 OP *myop = va_arg(args, OP*);
1795 int is_eval = va_arg(args, int);
1797 call_body(myop, is_eval);
1803 S_call_body(pTHX_ OP *myop, int is_eval)
1805 if (PL_op == myop) {
1807 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1809 PL_op = Perl_pp_entersub(aTHX); /* this does */
1815 /* Eval a string. The G_EVAL flag is always assumed. */
1818 =for apidoc p||eval_sv
1820 Tells Perl to C<eval> the string in the SV.
1826 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1828 /* See G_* flags in cop.h */
1831 UNOP myop; /* fake syntax tree node */
1832 I32 oldmark = SP - PL_stack_base;
1839 if (flags & G_DISCARD) {
1846 Zero(PL_op, 1, UNOP);
1847 EXTEND(PL_stack_sp, 1);
1848 *++PL_stack_sp = sv;
1849 oldscope = PL_scopestack_ix;
1851 if (!(flags & G_NOARGS))
1852 myop.op_flags = OPf_STACKED;
1853 myop.op_next = Nullop;
1854 myop.op_type = OP_ENTEREVAL;
1855 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1856 (flags & G_ARRAY) ? OPf_WANT_LIST :
1858 if (flags & G_KEEPERR)
1859 myop.op_flags |= OPf_SPECIAL;
1861 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1863 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1870 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1872 call_body((OP*)&myop,TRUE);
1874 retval = PL_stack_sp - (PL_stack_base + oldmark);
1875 if (!(flags & G_KEEPERR))
1882 /* my_exit() was called */
1883 PL_curstash = PL_defstash;
1886 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1887 Perl_croak(aTHX_ "Callback called exit");
1892 PL_op = PL_restartop;
1896 PL_stack_sp = PL_stack_base + oldmark;
1897 if (flags & G_ARRAY)
1901 *++PL_stack_sp = &PL_sv_undef;
1907 if (flags & G_DISCARD) {
1908 PL_stack_sp = PL_stack_base + oldmark;
1918 =for apidoc p||eval_pv
1920 Tells Perl to C<eval> the given string and return an SV* result.
1926 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1929 SV* sv = newSVpv(p, 0);
1931 eval_sv(sv, G_SCALAR);
1938 if (croak_on_error && SvTRUE(ERRSV)) {
1940 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1946 /* Require a module. */
1949 =for apidoc p||require_pv
1951 Tells Perl to C<require> a module.
1957 Perl_require_pv(pTHX_ const char *pv)
1961 PUSHSTACKi(PERLSI_REQUIRE);
1963 sv = sv_newmortal();
1964 sv_setpv(sv, "require '");
1967 eval_sv(sv, G_DISCARD);
1973 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1977 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1978 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1982 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1984 /* This message really ought to be max 23 lines.
1985 * Removed -h because the user already knows that opton. Others? */
1987 static char *usage_msg[] = {
1988 "-0[octal] specify record separator (\\0, if no argument)",
1989 "-a autosplit mode with -n or -p (splits $_ into @F)",
1990 "-C enable native wide character system interfaces",
1991 "-c check syntax only (runs BEGIN and CHECK blocks)",
1992 "-d[:debugger] run program under debugger",
1993 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1994 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1995 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1996 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1997 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1998 "-l[octal] enable line ending processing, specifies line terminator",
1999 "-[mM][-]module execute `use/no module...' before executing program",
2000 "-n assume 'while (<>) { ... }' loop around program",
2001 "-p assume loop like -n but print line also, like sed",
2002 "-P run program through C preprocessor before compilation",
2003 "-s enable rudimentary parsing for switches after programfile",
2004 "-S look for programfile using PATH environment variable",
2005 "-T enable tainting checks",
2006 "-u dump core after parsing program",
2007 "-U allow unsafe operations",
2008 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2009 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2010 "-w enable many useful warnings (RECOMMENDED)",
2011 "-W enable all warnings",
2012 "-X disable all warnings",
2013 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2017 char **p = usage_msg;
2019 PerlIO_printf(PerlIO_stdout(),
2020 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2023 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2026 /* This routine handles any switches that can be given during run */
2029 Perl_moreswitches(pTHX_ char *s)
2037 numlen = 0; /* disallow underscores */
2038 rschar = (U32)scan_oct(s, 4, &numlen);
2039 SvREFCNT_dec(PL_nrs);
2040 if (rschar & ~((U8)~0))
2041 PL_nrs = &PL_sv_undef;
2042 else if (!rschar && numlen >= 2)
2043 PL_nrs = newSVpvn("", 0);
2046 PL_nrs = newSVpvn(&ch, 1);
2051 PL_widesyscalls = TRUE;
2056 PL_splitstr = savepv(s + 1);
2070 /* The following permits -d:Mod to accepts arguments following an =
2071 in the fashion that -MSome::Mod does. */
2072 if (*s == ':' || *s == '=') {
2075 sv = newSVpv("use Devel::", 0);
2077 /* We now allow -d:Module=Foo,Bar */
2078 while(isALNUM(*s) || *s==':') ++s;
2080 sv_catpv(sv, start);
2082 sv_catpvn(sv, start, s-start);
2083 sv_catpv(sv, " split(/,/,q{");
2088 my_setenv("PERL5DB", SvPV(sv, PL_na));
2091 PL_perldb = PERLDB_ALL;
2099 if (isALPHA(s[1])) {
2100 static char debopts[] = "psltocPmfrxuLHXDST";
2103 for (s++; *s && (d = strchr(debopts,*s)); s++)
2104 PL_debug |= 1 << (d - debopts);
2107 PL_debug = atoi(s+1);
2108 for (s++; isDIGIT(*s); s++) ;
2110 PL_debug |= 0x80000000;
2112 if (ckWARN_d(WARN_DEBUGGING))
2113 Perl_warner(aTHX_ WARN_DEBUGGING,
2114 "Recompile perl with -DDEBUGGING to use -D switch\n");
2115 for (s++; isALNUM(*s); s++) ;
2121 usage(PL_origargv[0]);
2125 Safefree(PL_inplace);
2126 PL_inplace = savepv(s+1);
2128 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2131 if (*s == '-') /* Additional switches on #! line. */
2135 case 'I': /* -I handled both here and in parse_perl() */
2138 while (*s && isSPACE(*s))
2143 /* ignore trailing spaces (possibly followed by other switches) */
2145 for (e = p; *e && !isSPACE(*e); e++) ;
2149 } while (*p && *p != '-');
2150 e = savepvn(s, e-s);
2151 incpush(e, TRUE, TRUE);
2158 Perl_croak(aTHX_ "No directory specified for -I");
2164 SvREFCNT_dec(PL_ors_sv);
2168 PL_ors_sv = newSVpvn("\n",1);
2169 numlen = 0; /* disallow underscores */
2170 *SvPVX(PL_ors_sv) = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2174 if (RsPARA(PL_nrs)) {
2175 PL_ors_sv = newSVpvn("\n\n",2);
2178 PL_ors_sv = newSVsv(PL_nrs);
2183 forbid_setid("-M"); /* XXX ? */
2186 forbid_setid("-m"); /* XXX ? */
2191 /* -M-foo == 'no foo' */
2192 if (*s == '-') { use = "no "; ++s; }
2193 sv = newSVpv(use,0);
2195 /* We allow -M'Module qw(Foo Bar)' */
2196 while(isALNUM(*s) || *s==':') ++s;
2198 sv_catpv(sv, start);
2199 if (*(start-1) == 'm') {
2201 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2202 sv_catpv( sv, " ()");
2206 Perl_croak(aTHX_ "Module name required with -%c option",
2208 sv_catpvn(sv, start, s-start);
2209 sv_catpv(sv, " split(/,/,q{");
2215 PL_preambleav = newAV();
2216 av_push(PL_preambleav, sv);
2219 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2231 PL_doswitches = TRUE;
2236 Perl_croak(aTHX_ "Too late for \"-T\" option");
2240 #ifdef MACOS_TRADITIONAL
2241 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2243 PL_do_undump = TRUE;
2251 PerlIO_printf(PerlIO_stdout(),
2252 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2253 PL_patchlevel, ARCHNAME));
2254 #if defined(LOCAL_PATCH_COUNT)
2255 if (LOCAL_PATCH_COUNT > 0)
2256 PerlIO_printf(PerlIO_stdout(),
2257 "\n(with %d registered patch%s, "
2258 "see perl -V for more detail)",
2259 (int)LOCAL_PATCH_COUNT,
2260 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2263 PerlIO_printf(PerlIO_stdout(),
2264 "\n\nCopyright 1987-2001, Larry Wall\n");
2265 #ifdef MACOS_TRADITIONAL
2266 PerlIO_printf(PerlIO_stdout(),
2267 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2270 PerlIO_printf(PerlIO_stdout(),
2271 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2274 PerlIO_printf(PerlIO_stdout(),
2275 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2276 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2279 PerlIO_printf(PerlIO_stdout(),
2280 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2281 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2284 PerlIO_printf(PerlIO_stdout(),
2285 "atariST series port, ++jrb bammi@cadence.com\n");
2288 PerlIO_printf(PerlIO_stdout(),
2289 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2292 PerlIO_printf(PerlIO_stdout(),
2293 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2296 PerlIO_printf(PerlIO_stdout(),
2297 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2300 PerlIO_printf(PerlIO_stdout(),
2301 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2304 PerlIO_printf(PerlIO_stdout(),
2305 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2308 PerlIO_printf(PerlIO_stdout(),
2309 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2312 PerlIO_printf(PerlIO_stdout(),
2313 "MiNT port by Guido Flohr, 1997-1999\n");
2316 PerlIO_printf(PerlIO_stdout(),
2317 "EPOC port by Olaf Flebbe, 1999-2000\n");
2319 #ifdef BINARY_BUILD_NOTICE
2320 BINARY_BUILD_NOTICE;
2322 PerlIO_printf(PerlIO_stdout(),
2324 Perl may be copied only under the terms of either the Artistic License or the\n\
2325 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2326 Complete documentation for Perl, including FAQ lists, should be found on\n\
2327 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2328 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2331 if (! (PL_dowarn & G_WARN_ALL_MASK))
2332 PL_dowarn |= G_WARN_ON;
2336 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2337 PL_compiling.cop_warnings = pWARN_ALL ;
2341 PL_dowarn = G_WARN_ALL_OFF;
2342 PL_compiling.cop_warnings = pWARN_NONE ;
2347 if (s[1] == '-') /* Additional switches on #! line. */
2352 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2358 #ifdef ALTERNATE_SHEBANG
2359 case 'S': /* OS/2 needs -S on "extproc" line. */
2367 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2372 /* compliments of Tom Christiansen */
2374 /* unexec() can be found in the Gnu emacs distribution */
2375 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2378 Perl_my_unexec(pTHX)
2386 prog = newSVpv(BIN_EXP, 0);
2387 sv_catpv(prog, "/perl");
2388 file = newSVpv(PL_origfilename, 0);
2389 sv_catpv(file, ".perldump");
2391 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2392 /* unexec prints msg to stderr in case of failure */
2393 PerlProc_exit(status);
2396 # include <lib$routines.h>
2397 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2399 ABORT(); /* for use with undump */
2404 /* initialize curinterp */
2409 #ifdef PERL_OBJECT /* XXX kludge */
2412 PL_chopset = " \n-"; \
2413 PL_copline = NOLINE; \
2414 PL_curcop = &PL_compiling;\
2415 PL_curcopdb = NULL; \
2417 PL_dumpindent = 4; \
2418 PL_laststatval = -1; \
2419 PL_laststype = OP_STAT; \
2420 PL_maxscream = -1; \
2421 PL_maxsysfd = MAXSYSFD; \
2422 PL_statname = Nullsv; \
2423 PL_tmps_floor = -1; \
2425 PL_op_mask = NULL; \
2426 PL_laststatval = -1; \
2427 PL_laststype = OP_STAT; \
2428 PL_mess_sv = Nullsv; \
2429 PL_splitstr = " "; \
2430 PL_generation = 100; \
2431 PL_exitlist = NULL; \
2432 PL_exitlistlen = 0; \
2434 PL_in_clean_objs = FALSE; \
2435 PL_in_clean_all = FALSE; \
2436 PL_profiledata = NULL; \
2438 PL_rsfp_filters = Nullav; \
2443 # ifdef MULTIPLICITY
2444 # define PERLVAR(var,type)
2445 # define PERLVARA(var,n,type)
2446 # if defined(PERL_IMPLICIT_CONTEXT)
2447 # if defined(USE_THREADS)
2448 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2449 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2450 # else /* !USE_THREADS */
2451 # define PERLVARI(var,type,init) aTHX->var = init;
2452 # define PERLVARIC(var,type,init) aTHX->var = init;
2453 # endif /* USE_THREADS */
2455 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2456 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2458 # include "intrpvar.h"
2459 # ifndef USE_THREADS
2460 # include "thrdvar.h"
2467 # define PERLVAR(var,type)
2468 # define PERLVARA(var,n,type)
2469 # define PERLVARI(var,type,init) PL_##var = init;
2470 # define PERLVARIC(var,type,init) PL_##var = init;
2471 # include "intrpvar.h"
2472 # ifndef USE_THREADS
2473 # include "thrdvar.h"
2485 S_init_main_stash(pTHX)
2489 /* Note that strtab is a rather special HV. Assumptions are made
2490 about not iterating on it, and not adding tie magic to it.
2491 It is properly deallocated in perl_destruct() */
2492 PL_strtab = newHV();
2494 MUTEX_INIT(&PL_strtab_mutex);
2496 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2497 hv_ksplit(PL_strtab, 512);
2499 PL_curstash = PL_defstash = newHV();
2500 PL_curstname = newSVpvn("main",4);
2501 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2502 SvREFCNT_dec(GvHV(gv));
2503 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2505 HvNAME(PL_defstash) = savepv("main");
2506 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2507 GvMULTI_on(PL_incgv);
2508 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2509 GvMULTI_on(PL_hintgv);
2510 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2511 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2512 GvMULTI_on(PL_errgv);
2513 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2514 GvMULTI_on(PL_replgv);
2515 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2516 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2517 sv_setpvn(ERRSV, "", 0);
2518 PL_curstash = PL_defstash;
2519 CopSTASH_set(&PL_compiling, PL_defstash);
2520 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2521 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2522 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2523 /* We must init $/ before switches are processed. */
2524 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2528 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2533 PL_origfilename = savepv("-e");
2536 /* if find_script() returns, it returns a malloc()-ed value */
2537 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2539 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2540 char *s = scriptname + 8;
2541 *fdscript = atoi(s);
2545 scriptname = savepv(s + 1);
2546 Safefree(PL_origfilename);
2547 PL_origfilename = scriptname;
2553 Safefree(CopFILE(PL_curcop));
2555 SvREFCNT_dec(CopFILEGV(PL_curcop));
2557 CopFILE_set(PL_curcop, PL_origfilename);
2558 if (strEQ(PL_origfilename,"-"))
2560 if (*fdscript >= 0) {
2561 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2562 #if defined(HAS_FCNTL) && defined(F_SETFD)
2564 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2567 else if (PL_preprocess) {
2568 char *cpp_cfg = CPPSTDIN;
2569 SV *cpp = newSVpvn("",0);
2570 SV *cmd = NEWSV(0,0);
2572 if (strEQ(cpp_cfg, "cppstdin"))
2573 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2574 sv_catpv(cpp, cpp_cfg);
2576 sv_catpvn(sv, "-I", 2);
2577 sv_catpv(sv,PRIVLIB_EXP);
2579 #if defined(MSDOS) || defined(WIN32)
2580 Perl_sv_setpvf(aTHX_ cmd, "\
2581 sed %s -e \"/^[^#]/b\" \
2582 -e \"/^#[ ]*include[ ]/b\" \
2583 -e \"/^#[ ]*define[ ]/b\" \
2584 -e \"/^#[ ]*if[ ]/b\" \
2585 -e \"/^#[ ]*ifdef[ ]/b\" \
2586 -e \"/^#[ ]*ifndef[ ]/b\" \
2587 -e \"/^#[ ]*else/b\" \
2588 -e \"/^#[ ]*elif[ ]/b\" \
2589 -e \"/^#[ ]*undef[ ]/b\" \
2590 -e \"/^#[ ]*endif/b\" \
2592 %s | %"SVf" -C %"SVf" %s",
2593 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2596 Perl_sv_setpvf(aTHX_ cmd, "\
2597 %s %s -e '/^[^#]/b' \
2598 -e '/^#[ ]*include[ ]/b' \
2599 -e '/^#[ ]*define[ ]/b' \
2600 -e '/^#[ ]*if[ ]/b' \
2601 -e '/^#[ ]*ifdef[ ]/b' \
2602 -e '/^#[ ]*ifndef[ ]/b' \
2603 -e '/^#[ ]*else/b' \
2604 -e '/^#[ ]*elif[ ]/b' \
2605 -e '/^#[ ]*undef[ ]/b' \
2606 -e '/^#[ ]*endif/b' \
2608 %s | %"SVf" %"SVf" %s",
2610 Perl_sv_setpvf(aTHX_ cmd, "\
2611 %s %s -e '/^[^#]/b' \
2612 -e '/^#[ ]*include[ ]/b' \
2613 -e '/^#[ ]*define[ ]/b' \
2614 -e '/^#[ ]*if[ ]/b' \
2615 -e '/^#[ ]*ifdef[ ]/b' \
2616 -e '/^#[ ]*ifndef[ ]/b' \
2617 -e '/^#[ ]*else/b' \
2618 -e '/^#[ ]*elif[ ]/b' \
2619 -e '/^#[ ]*undef[ ]/b' \
2620 -e '/^#[ ]*endif/b' \
2622 %s | %"SVf" -C %"SVf" %s",
2629 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2631 scriptname, cpp, sv, CPPMINUS);
2632 PL_doextract = FALSE;
2633 #ifdef IAMSUID /* actually, this is caught earlier */
2634 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2636 (void)seteuid(PL_uid); /* musn't stay setuid root */
2639 (void)setreuid((Uid_t)-1, PL_uid);
2641 #ifdef HAS_SETRESUID
2642 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2644 PerlProc_setuid(PL_uid);
2648 if (PerlProc_geteuid() != PL_uid)
2649 Perl_croak(aTHX_ "Can't do seteuid!\n");
2651 #endif /* IAMSUID */
2652 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2656 else if (!*scriptname) {
2657 forbid_setid("program input from stdin");
2658 PL_rsfp = PerlIO_stdin();
2661 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2662 #if defined(HAS_FCNTL) && defined(F_SETFD)
2664 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2669 #ifndef IAMSUID /* in case script is not readable before setuid */
2671 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2672 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2675 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2676 (int)PERL_REVISION, (int)PERL_VERSION,
2677 (int)PERL_SUBVERSION), PL_origargv);
2678 Perl_croak(aTHX_ "Can't do setuid\n");
2682 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2683 CopFILE(PL_curcop), Strerror(errno));
2688 * I_SYSSTATVFS HAS_FSTATVFS
2690 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2691 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2692 * here so that metaconfig picks them up. */
2696 S_fd_on_nosuid_fs(pTHX_ int fd)
2698 int check_okay = 0; /* able to do all the required sys/libcalls */
2699 int on_nosuid = 0; /* the fd is on a nosuid fs */
2701 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2702 * fstatvfs() is UNIX98.
2703 * fstatfs() is 4.3 BSD.
2704 * ustat()+getmnt() is pre-4.3 BSD.
2705 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2706 * an irrelevant filesystem while trying to reach the right one.
2709 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2711 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2712 defined(HAS_FSTATVFS)
2713 # define FD_ON_NOSUID_CHECK_OKAY
2714 struct statvfs stfs;
2716 check_okay = fstatvfs(fd, &stfs) == 0;
2717 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2718 # endif /* fstatvfs */
2720 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2721 defined(PERL_MOUNT_NOSUID) && \
2722 defined(HAS_FSTATFS) && \
2723 defined(HAS_STRUCT_STATFS) && \
2724 defined(HAS_STRUCT_STATFS_F_FLAGS)
2725 # define FD_ON_NOSUID_CHECK_OKAY
2728 check_okay = fstatfs(fd, &stfs) == 0;
2729 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2730 # endif /* fstatfs */
2732 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2733 defined(PERL_MOUNT_NOSUID) && \
2734 defined(HAS_FSTAT) && \
2735 defined(HAS_USTAT) && \
2736 defined(HAS_GETMNT) && \
2737 defined(HAS_STRUCT_FS_DATA) && \
2739 # define FD_ON_NOSUID_CHECK_OKAY
2742 if (fstat(fd, &fdst) == 0) {
2744 if (ustat(fdst.st_dev, &us) == 0) {
2746 /* NOSTAT_ONE here because we're not examining fields which
2747 * vary between that case and STAT_ONE. */
2748 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2749 size_t cmplen = sizeof(us.f_fname);
2750 if (sizeof(fsd.fd_req.path) < cmplen)
2751 cmplen = sizeof(fsd.fd_req.path);
2752 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2753 fdst.st_dev == fsd.fd_req.dev) {
2755 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2761 # endif /* fstat+ustat+getmnt */
2763 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2764 defined(HAS_GETMNTENT) && \
2765 defined(HAS_HASMNTOPT) && \
2766 defined(MNTOPT_NOSUID)
2767 # define FD_ON_NOSUID_CHECK_OKAY
2768 FILE *mtab = fopen("/etc/mtab", "r");
2769 struct mntent *entry;
2770 struct stat stb, fsb;
2772 if (mtab && (fstat(fd, &stb) == 0)) {
2773 while (entry = getmntent(mtab)) {
2774 if (stat(entry->mnt_dir, &fsb) == 0
2775 && fsb.st_dev == stb.st_dev)
2777 /* found the filesystem */
2779 if (hasmntopt(entry, MNTOPT_NOSUID))
2782 } /* A single fs may well fail its stat(). */
2787 # endif /* getmntent+hasmntopt */
2790 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2793 #endif /* IAMSUID */
2796 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2802 /* do we need to emulate setuid on scripts? */
2804 /* This code is for those BSD systems that have setuid #! scripts disabled
2805 * in the kernel because of a security problem. Merely defining DOSUID
2806 * in perl will not fix that problem, but if you have disabled setuid
2807 * scripts in the kernel, this will attempt to emulate setuid and setgid
2808 * on scripts that have those now-otherwise-useless bits set. The setuid
2809 * root version must be called suidperl or sperlN.NNN. If regular perl
2810 * discovers that it has opened a setuid script, it calls suidperl with
2811 * the same argv that it had. If suidperl finds that the script it has
2812 * just opened is NOT setuid root, it sets the effective uid back to the
2813 * uid. We don't just make perl setuid root because that loses the
2814 * effective uid we had before invoking perl, if it was different from the
2817 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2818 * be defined in suidperl only. suidperl must be setuid root. The
2819 * Configure script will set this up for you if you want it.
2825 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2826 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2827 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2832 #ifndef HAS_SETREUID
2833 /* On this access check to make sure the directories are readable,
2834 * there is actually a small window that the user could use to make
2835 * filename point to an accessible directory. So there is a faint
2836 * chance that someone could execute a setuid script down in a
2837 * non-accessible directory. I don't know what to do about that.
2838 * But I don't think it's too important. The manual lies when
2839 * it says access() is useful in setuid programs.
2841 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2842 Perl_croak(aTHX_ "Permission denied");
2844 /* If we can swap euid and uid, then we can determine access rights
2845 * with a simple stat of the file, and then compare device and
2846 * inode to make sure we did stat() on the same file we opened.
2847 * Then we just have to make sure he or she can execute it.
2850 struct stat tmpstatbuf;
2854 setreuid(PL_euid,PL_uid) < 0
2857 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2860 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2861 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2862 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2863 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2864 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2865 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2866 Perl_croak(aTHX_ "Permission denied");
2868 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2869 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2870 (void)PerlIO_close(PL_rsfp);
2871 Perl_croak(aTHX_ "Permission denied\n");
2875 setreuid(PL_uid,PL_euid) < 0
2877 # if defined(HAS_SETRESUID)
2878 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2881 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2882 Perl_croak(aTHX_ "Can't reswap uid and euid");
2883 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2884 Perl_croak(aTHX_ "Permission denied\n");
2886 #endif /* HAS_SETREUID */
2887 #endif /* IAMSUID */
2889 if (!S_ISREG(PL_statbuf.st_mode))
2890 Perl_croak(aTHX_ "Permission denied");
2891 if (PL_statbuf.st_mode & S_IWOTH)
2892 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2893 PL_doswitches = FALSE; /* -s is insecure in suid */
2894 CopLINE_inc(PL_curcop);
2895 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2896 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2897 Perl_croak(aTHX_ "No #! line");
2898 s = SvPV(PL_linestr,n_a)+2;
2900 while (!isSPACE(*s)) s++;
2901 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2902 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2903 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2904 Perl_croak(aTHX_ "Not a perl script");
2905 while (*s == ' ' || *s == '\t') s++;
2907 * #! arg must be what we saw above. They can invoke it by
2908 * mentioning suidperl explicitly, but they may not add any strange
2909 * arguments beyond what #! says if they do invoke suidperl that way.
2911 len = strlen(validarg);
2912 if (strEQ(validarg," PHOOEY ") ||
2913 strnNE(s,validarg,len) || !isSPACE(s[len]))
2914 Perl_croak(aTHX_ "Args must match #! line");
2917 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2918 PL_euid == PL_statbuf.st_uid)
2920 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2921 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2922 #endif /* IAMSUID */
2924 if (PL_euid) { /* oops, we're not the setuid root perl */
2925 (void)PerlIO_close(PL_rsfp);
2928 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2929 (int)PERL_REVISION, (int)PERL_VERSION,
2930 (int)PERL_SUBVERSION), PL_origargv);
2932 Perl_croak(aTHX_ "Can't do setuid\n");
2935 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2937 (void)setegid(PL_statbuf.st_gid);
2940 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2942 #ifdef HAS_SETRESGID
2943 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2945 PerlProc_setgid(PL_statbuf.st_gid);
2949 if (PerlProc_getegid() != PL_statbuf.st_gid)
2950 Perl_croak(aTHX_ "Can't do setegid!\n");
2952 if (PL_statbuf.st_mode & S_ISUID) {
2953 if (PL_statbuf.st_uid != PL_euid)
2955 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2958 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2960 #ifdef HAS_SETRESUID
2961 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2963 PerlProc_setuid(PL_statbuf.st_uid);
2967 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2968 Perl_croak(aTHX_ "Can't do seteuid!\n");
2970 else if (PL_uid) { /* oops, mustn't run as root */
2972 (void)seteuid((Uid_t)PL_uid);
2975 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2977 #ifdef HAS_SETRESUID
2978 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2980 PerlProc_setuid((Uid_t)PL_uid);
2984 if (PerlProc_geteuid() != PL_uid)
2985 Perl_croak(aTHX_ "Can't do seteuid!\n");
2988 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2989 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2992 else if (PL_preprocess)
2993 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2994 else if (fdscript >= 0)
2995 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2997 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2999 /* We absolutely must clear out any saved ids here, so we */
3000 /* exec the real perl, substituting fd script for scriptname. */
3001 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3002 PerlIO_rewind(PL_rsfp);
3003 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3004 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3005 if (!PL_origargv[which])
3006 Perl_croak(aTHX_ "Permission denied");
3007 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3008 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3009 #if defined(HAS_FCNTL) && defined(F_SETFD)
3010 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3012 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3013 (int)PERL_REVISION, (int)PERL_VERSION,
3014 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3015 Perl_croak(aTHX_ "Can't do setuid\n");
3016 #endif /* IAMSUID */
3018 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3019 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3020 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3021 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3023 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3026 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3027 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3028 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3029 /* not set-id, must be wrapped */
3035 S_find_beginning(pTHX)
3037 register char *s, *s2;
3039 /* skip forward in input to the real script? */
3042 #ifdef MACOS_TRADITIONAL
3043 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3045 while (PL_doextract || gMacPerl_AlwaysExtract) {
3046 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3047 if (!gMacPerl_AlwaysExtract)
3048 Perl_croak(aTHX_ "No Perl script found in input\n");
3050 if (PL_doextract) /* require explicit override ? */
3051 if (!OverrideExtract(PL_origfilename))
3052 Perl_croak(aTHX_ "User aborted script\n");
3054 PL_doextract = FALSE;
3056 /* Pater peccavi, file does not have #! */
3057 PerlIO_rewind(PL_rsfp);
3062 while (PL_doextract) {
3063 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3064 Perl_croak(aTHX_ "No Perl script found in input\n");
3066 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3067 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3068 PL_doextract = FALSE;
3069 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3071 while (*s == ' ' || *s == '\t') s++;
3073 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3074 if (strnEQ(s2-4,"perl",4))
3076 while ((s = moreswitches(s)))
3087 PL_uid = PerlProc_getuid();
3088 PL_euid = PerlProc_geteuid();
3089 PL_gid = PerlProc_getgid();
3090 PL_egid = PerlProc_getegid();
3092 PL_uid |= PL_gid << 16;
3093 PL_euid |= PL_egid << 16;
3095 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3099 S_forbid_setid(pTHX_ char *s)
3101 if (PL_euid != PL_uid)
3102 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3103 if (PL_egid != PL_gid)
3104 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3108 Perl_init_debugger(pTHX)
3110 HV *ostash = PL_curstash;
3112 PL_curstash = PL_debstash;
3113 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3114 AvREAL_off(PL_dbargs);
3115 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3116 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3117 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3118 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3119 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3120 sv_setiv(PL_DBsingle, 0);
3121 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3122 sv_setiv(PL_DBtrace, 0);
3123 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3124 sv_setiv(PL_DBsignal, 0);
3125 PL_curstash = ostash;
3128 #ifndef STRESS_REALLOC
3129 #define REASONABLE(size) (size)
3131 #define REASONABLE(size) (1) /* unreasonable */
3135 Perl_init_stacks(pTHX)
3137 /* start with 128-item stack and 8K cxstack */
3138 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3139 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3140 PL_curstackinfo->si_type = PERLSI_MAIN;
3141 PL_curstack = PL_curstackinfo->si_stack;
3142 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3144 PL_stack_base = AvARRAY(PL_curstack);
3145 PL_stack_sp = PL_stack_base;
3146 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3148 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3151 PL_tmps_max = REASONABLE(128);
3153 New(54,PL_markstack,REASONABLE(32),I32);
3154 PL_markstack_ptr = PL_markstack;
3155 PL_markstack_max = PL_markstack + REASONABLE(32);
3159 New(54,PL_scopestack,REASONABLE(32),I32);
3160 PL_scopestack_ix = 0;
3161 PL_scopestack_max = REASONABLE(32);
3163 New(54,PL_savestack,REASONABLE(128),ANY);
3164 PL_savestack_ix = 0;
3165 PL_savestack_max = REASONABLE(128);
3167 New(54,PL_retstack,REASONABLE(16),OP*);
3169 PL_retstack_max = REASONABLE(16);
3177 while (PL_curstackinfo->si_next)
3178 PL_curstackinfo = PL_curstackinfo->si_next;
3179 while (PL_curstackinfo) {
3180 PERL_SI *p = PL_curstackinfo->si_prev;
3181 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3182 Safefree(PL_curstackinfo->si_cxstack);
3183 Safefree(PL_curstackinfo);
3184 PL_curstackinfo = p;
3186 Safefree(PL_tmps_stack);
3187 Safefree(PL_markstack);
3188 Safefree(PL_scopestack);
3189 Safefree(PL_savestack);
3190 Safefree(PL_retstack);
3194 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3205 lex_start(PL_linestr);
3207 PL_subname = newSVpvn("main",4);
3211 S_init_predump_symbols(pTHX)
3216 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3217 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3218 GvMULTI_on(PL_stdingv);
3219 io = GvIOp(PL_stdingv);
3220 IoIFP(io) = PerlIO_stdin();
3221 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3223 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3225 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3228 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3230 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3232 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3234 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3235 GvMULTI_on(PL_stderrgv);
3236 io = GvIOp(PL_stderrgv);
3237 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3238 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3240 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3242 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3245 Safefree(PL_osname);
3246 PL_osname = savepv(OSNAME);
3250 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3256 argc--,argv++; /* skip name of script */
3257 if (PL_doswitches) {
3258 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3261 if (argv[0][1] == '-' && !argv[0][2]) {
3265 if ((s = strchr(argv[0], '='))) {
3267 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3270 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3273 PL_toptarget = NEWSV(0,0);
3274 sv_upgrade(PL_toptarget, SVt_PVFM);
3275 sv_setpvn(PL_toptarget, "", 0);
3276 PL_bodytarget = NEWSV(0,0);
3277 sv_upgrade(PL_bodytarget, SVt_PVFM);
3278 sv_setpvn(PL_bodytarget, "", 0);
3279 PL_formtarget = PL_bodytarget;
3282 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3283 #ifdef MACOS_TRADITIONAL
3284 /* $0 is not majick on a Mac */
3285 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3287 sv_setpv(GvSV(tmpgv),PL_origfilename);
3288 magicname("0", "0", 1);
3291 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3293 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3295 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3297 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3298 GvMULTI_on(PL_argvgv);
3299 (void)gv_AVadd(PL_argvgv);
3300 av_clear(GvAVn(PL_argvgv));
3301 for (; argc > 0; argc--,argv++) {
3302 SV *sv = newSVpv(argv[0],0);
3303 av_push(GvAVn(PL_argvgv),sv);
3304 if (PL_widesyscalls)
3305 (void)sv_utf8_decode(sv);
3308 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3310 GvMULTI_on(PL_envgv);
3311 hv = GvHVn(PL_envgv);
3312 hv_magic(hv, PL_envgv, 'E');
3313 #ifdef USE_ENVIRON_ARRAY
3314 /* Note that if the supplied env parameter is actually a copy
3315 of the global environ then it may now point to free'd memory
3316 if the environment has been modified since. To avoid this
3317 problem we treat env==NULL as meaning 'use the default'
3322 environ[0] = Nullch;
3323 for (; *env; env++) {
3324 if (!(s = strchr(*env,'=')))
3330 sv = newSVpv(s--,0);
3331 (void)hv_store(hv, *env, s - *env, sv, 0);
3333 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3334 /* Sins of the RTL. See note in my_setenv(). */
3335 (void)PerlEnv_putenv(savepv(*env));
3339 #ifdef DYNAMIC_ENV_FETCH
3340 HvNAME(hv) = savepv(ENV_HV_NAME);
3344 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3345 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3349 S_init_perllib(pTHX)
3354 s = PerlEnv_getenv("PERL5LIB");
3356 incpush(s, TRUE, TRUE);
3358 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3360 /* Treat PERL5?LIB as a possible search list logical name -- the
3361 * "natural" VMS idiom for a Unix path string. We allow each
3362 * element to be a set of |-separated directories for compatibility.
3366 if (my_trnlnm("PERL5LIB",buf,0))
3367 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3369 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3373 /* Use the ~-expanded versions of APPLLIB (undocumented),
3374 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3377 incpush(APPLLIB_EXP, TRUE, TRUE);
3381 incpush(ARCHLIB_EXP, FALSE, FALSE);
3383 #ifdef MACOS_TRADITIONAL
3385 struct stat tmpstatbuf;
3386 SV * privdir = NEWSV(55, 0);
3387 char * macperl = PerlEnv_getenv("MACPERL");
3392 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3393 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3394 incpush(SvPVX(privdir), TRUE, FALSE);
3395 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3396 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3397 incpush(SvPVX(privdir), TRUE, FALSE);
3399 SvREFCNT_dec(privdir);
3402 incpush(":", FALSE, FALSE);
3405 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3408 incpush(PRIVLIB_EXP, TRUE, FALSE);
3410 incpush(PRIVLIB_EXP, FALSE, FALSE);
3414 /* sitearch is always relative to sitelib on Windows for
3415 * DLL-based path intuition to work correctly */
3416 # if !defined(WIN32)
3417 incpush(SITEARCH_EXP, FALSE, FALSE);
3423 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3425 incpush(SITELIB_EXP, FALSE, FALSE);
3429 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3430 incpush(SITELIB_STEM, FALSE, TRUE);
3433 #ifdef PERL_VENDORARCH_EXP
3434 /* vendorarch is always relative to vendorlib on Windows for
3435 * DLL-based path intuition to work correctly */
3436 # if !defined(WIN32)
3437 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3441 #ifdef PERL_VENDORLIB_EXP
3443 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3445 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3449 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3450 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3453 #ifdef PERL_OTHERLIBDIRS
3454 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3458 incpush(".", FALSE, FALSE);
3459 #endif /* MACOS_TRADITIONAL */
3462 #if defined(DOSISH) || defined(EPOC)
3463 # define PERLLIB_SEP ';'
3466 # define PERLLIB_SEP '|'
3468 # if defined(MACOS_TRADITIONAL)
3469 # define PERLLIB_SEP ','
3471 # define PERLLIB_SEP ':'
3475 #ifndef PERLLIB_MANGLE
3476 # define PERLLIB_MANGLE(s,n) (s)
3480 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3482 SV *subdir = Nullsv;
3487 if (addsubdirs || addoldvers) {
3488 subdir = sv_newmortal();
3491 /* Break at all separators */
3493 SV *libdir = NEWSV(55,0);
3496 /* skip any consecutive separators */
3497 while ( *p == PERLLIB_SEP ) {
3498 /* Uncomment the next line for PATH semantics */
3499 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3503 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3504 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3509 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3510 p = Nullch; /* break out */
3512 #ifdef MACOS_TRADITIONAL
3513 if (!strchr(SvPVX(libdir), ':'))
3514 sv_insert(libdir, 0, 0, ":", 1);
3515 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3516 sv_catpv(libdir, ":");
3520 * BEFORE pushing libdir onto @INC we may first push version- and
3521 * archname-specific sub-directories.
3523 if (addsubdirs || addoldvers) {
3524 #ifdef PERL_INC_VERSION_LIST
3525 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3526 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3527 const char **incver;
3529 struct stat tmpstatbuf;
3534 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3536 while (unix[len-1] == '/') len--; /* Cosmetic */
3537 sv_usepvn(libdir,unix,len);
3540 PerlIO_printf(Perl_error_log,
3541 "Failed to unixify @INC element \"%s\"\n",
3545 #ifdef MACOS_TRADITIONAL
3546 #define PERL_AV_SUFFIX_FMT ""
3547 #define PERL_ARCH_FMT ":%s"
3549 #define PERL_AV_SUFFIX_FMT "/"
3550 #define PERL_ARCH_FMT "/%s"
3552 /* .../version/archname if -d .../version/archname */
3553 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3555 (int)PERL_REVISION, (int)PERL_VERSION,
3556 (int)PERL_SUBVERSION, ARCHNAME);
3557 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3558 S_ISDIR(tmpstatbuf.st_mode))
3559 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3561 /* .../version if -d .../version */
3562 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3563 (int)PERL_REVISION, (int)PERL_VERSION,
3564 (int)PERL_SUBVERSION);
3565 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3566 S_ISDIR(tmpstatbuf.st_mode))
3567 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3569 /* .../archname if -d .../archname */
3570 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3571 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3572 S_ISDIR(tmpstatbuf.st_mode))
3573 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3576 #ifdef PERL_INC_VERSION_LIST
3578 for (incver = incverlist; *incver; incver++) {
3579 /* .../xxx if -d .../xxx */
3580 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3581 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3582 S_ISDIR(tmpstatbuf.st_mode))
3583 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3589 /* finally push this lib directory on the end of @INC */
3590 av_push(GvAVn(PL_incgv), libdir);
3595 STATIC struct perl_thread *
3596 S_init_main_thread(pTHX)
3598 #if !defined(PERL_IMPLICIT_CONTEXT)
3599 struct perl_thread *thr;
3603 Newz(53, thr, 1, struct perl_thread);
3604 PL_curcop = &PL_compiling;
3605 thr->interp = PERL_GET_INTERP;
3606 thr->cvcache = newHV();
3607 thr->threadsv = newAV();
3608 /* thr->threadsvp is set when find_threadsv is called */
3609 thr->specific = newAV();
3610 thr->flags = THRf_R_JOINABLE;
3611 MUTEX_INIT(&thr->mutex);
3612 /* Handcraft thrsv similarly to mess_sv */
3613 New(53, PL_thrsv, 1, SV);
3614 Newz(53, xpv, 1, XPV);
3615 SvFLAGS(PL_thrsv) = SVt_PV;
3616 SvANY(PL_thrsv) = (void*)xpv;
3617 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3618 SvPVX(PL_thrsv) = (char*)thr;
3619 SvCUR_set(PL_thrsv, sizeof(thr));
3620 SvLEN_set(PL_thrsv, sizeof(thr));
3621 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3622 thr->oursv = PL_thrsv;
3623 PL_chopset = " \n-";
3626 MUTEX_LOCK(&PL_threads_mutex);
3632 MUTEX_UNLOCK(&PL_threads_mutex);
3634 #ifdef HAVE_THREAD_INTERN
3635 Perl_init_thread_intern(thr);
3638 #ifdef SET_THREAD_SELF
3639 SET_THREAD_SELF(thr);
3641 thr->self = pthread_self();
3642 #endif /* SET_THREAD_SELF */
3646 * These must come after the thread self setting
3647 * because sv_setpvn does SvTAINT and the taint
3648 * fields thread selfness being set.
3650 PL_toptarget = NEWSV(0,0);
3651 sv_upgrade(PL_toptarget, SVt_PVFM);
3652 sv_setpvn(PL_toptarget, "", 0);
3653 PL_bodytarget = NEWSV(0,0);
3654 sv_upgrade(PL_bodytarget, SVt_PVFM);
3655 sv_setpvn(PL_bodytarget, "", 0);
3656 PL_formtarget = PL_bodytarget;
3657 thr->errsv = newSVpvn("", 0);
3658 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3661 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3662 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3663 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3664 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3665 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3667 PL_reginterp_cnt = 0;
3671 #endif /* USE_THREADS */
3674 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3677 line_t oldline = CopLINE(PL_curcop);
3683 while (AvFILL(paramList) >= 0) {
3684 cv = (CV*)av_shift(paramList);
3685 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3686 /* save PL_beginav for compiler */
3687 if (! PL_beginav_save)
3688 PL_beginav_save = newAV();
3689 av_push(PL_beginav_save, (SV*)cv);
3693 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3694 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3700 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3704 (void)SvPV(atsv, len);
3707 PL_curcop = &PL_compiling;
3708 CopLINE_set(PL_curcop, oldline);
3709 if (paramList == PL_beginav)
3710 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3712 Perl_sv_catpvf(aTHX_ atsv,
3713 "%s failed--call queue aborted",
3714 paramList == PL_checkav ? "CHECK"
3715 : paramList == PL_initav ? "INIT"
3717 while (PL_scopestack_ix > oldscope)
3720 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3727 /* my_exit() was called */
3728 while (PL_scopestack_ix > oldscope)
3731 PL_curstash = PL_defstash;
3732 PL_curcop = &PL_compiling;
3733 CopLINE_set(PL_curcop, oldline);
3735 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3736 if (paramList == PL_beginav)
3737 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3739 Perl_croak(aTHX_ "%s failed--call queue aborted",
3740 paramList == PL_checkav ? "CHECK"
3741 : paramList == PL_initav ? "INIT"
3748 PL_curcop = &PL_compiling;
3749 CopLINE_set(PL_curcop, oldline);
3752 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3760 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3762 S_vcall_list_body(pTHX_ va_list args)
3764 CV *cv = va_arg(args, CV*);
3765 return call_list_body(cv);
3770 S_call_list_body(pTHX_ CV *cv)
3772 PUSHMARK(PL_stack_sp);
3773 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3778 Perl_my_exit(pTHX_ U32 status)
3780 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3781 thr, (unsigned long) status));
3790 STATUS_NATIVE_SET(status);
3797 Perl_my_failure_exit(pTHX)
3800 if (vaxc$errno & 1) {
3801 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3802 STATUS_NATIVE_SET(44);
3805 if (!vaxc$errno && errno) /* unlikely */
3806 STATUS_NATIVE_SET(44);
3808 STATUS_NATIVE_SET(vaxc$errno);
3813 STATUS_POSIX_SET(errno);
3815 exitstatus = STATUS_POSIX >> 8;
3816 if (exitstatus & 255)
3817 STATUS_POSIX_SET(exitstatus);
3819 STATUS_POSIX_SET(255);
3826 S_my_exit_jump(pTHX)
3828 register PERL_CONTEXT *cx;
3833 SvREFCNT_dec(PL_e_script);
3834 PL_e_script = Nullsv;
3837 POPSTACK_TO(PL_mainstack);
3838 if (cxstack_ix >= 0) {
3841 POPBLOCK(cx,PL_curpm);
3853 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3856 p = SvPVX(PL_e_script);
3857 nl = strchr(p, '\n');
3858 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3860 filter_del(read_e_script);
3863 sv_catpvn(buf_sv, p, nl-p);
3864 sv_chop(PL_e_script, nl);