3 * Copyright (c) 1987-2000 Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
15 #define PERL_IN_PERL_C
17 #include "patchlevel.h" /* for local_patches */
19 /* XXX If this causes problems, set i_unistd=undef in the hint file. */
24 #if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE)
25 char *getenv (char *); /* Usually in <stdlib.h> */
28 static I32 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen);
36 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
43 #define perl_construct Perl_construct
44 #define perl_parse Perl_parse
45 #define perl_run Perl_run
46 #define perl_destruct Perl_destruct
47 #define perl_free Perl_free
50 #if defined(USE_THREADS)
51 # define INIT_TLS_AND_INTERP \
53 if (!PL_curinterp) { \
54 PERL_SET_INTERP(my_perl); \
60 # if defined(USE_ITHREADS)
61 # define INIT_TLS_AND_INTERP \
63 if (!PL_curinterp) { \
64 PERL_SET_INTERP(my_perl); \
67 PERL_SET_THX(my_perl); \
71 PERL_SET_THX(my_perl); \
75 # define INIT_TLS_AND_INTERP \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
80 PERL_SET_THX(my_perl); \
85 #ifdef PERL_IMPLICIT_SYS
87 perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
88 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
89 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
90 struct IPerlDir* ipD, struct IPerlSock* ipS,
91 struct IPerlProc* ipP)
93 PerlInterpreter *my_perl;
95 my_perl = (PerlInterpreter*)new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd,
96 ipLIO, ipD, ipS, ipP);
99 /* New() needs interpreter, so call malloc() instead */
100 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
102 Zero(my_perl, 1, PerlInterpreter);
119 =for apidoc perl_alloc
121 Allocates a new Perl interpreter. See L<perlembed>.
129 PerlInterpreter *my_perl;
131 /* New() needs interpreter, so call malloc() instead */
132 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
135 Zero(my_perl, 1, PerlInterpreter);
138 #endif /* PERL_IMPLICIT_SYS */
141 =for apidoc perl_construct
143 Initializes a new Perl interpreter. See L<perlembed>.
149 perl_construct(pTHXx)
154 struct perl_thread *thr = NULL;
155 #endif /* FAKE_THREADS */
156 #endif /* USE_THREADS */
160 PL_perl_destruct_level = 1;
162 if (PL_perl_destruct_level > 0)
166 /* Init the real globals (and main thread)? */
169 MUTEX_INIT(&PL_sv_mutex);
171 * Safe to use basic SV functions from now on (though
172 * not things like mortals or tainting yet).
174 MUTEX_INIT(&PL_eval_mutex);
175 COND_INIT(&PL_eval_cond);
176 MUTEX_INIT(&PL_threads_mutex);
177 COND_INIT(&PL_nthreads_cond);
178 # ifdef EMULATE_ATOMIC_REFCOUNTS
179 MUTEX_INIT(&PL_svref_mutex);
180 # endif /* EMULATE_ATOMIC_REFCOUNTS */
182 MUTEX_INIT(&PL_cred_mutex);
183 MUTEX_INIT(&PL_sv_lock_mutex);
184 MUTEX_INIT(&PL_fdpid_mutex);
186 thr = init_main_thread();
187 #endif /* USE_THREADS */
189 #ifdef PERL_FLEXIBLE_EXCEPTIONS
190 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
193 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
195 PL_linestr = NEWSV(65,79);
196 sv_upgrade(PL_linestr,SVt_PVIV);
198 if (!SvREADONLY(&PL_sv_undef)) {
199 /* set read-only and try to insure than we wont see REFCNT==0
202 SvREADONLY_on(&PL_sv_undef);
203 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
205 sv_setpv(&PL_sv_no,PL_No);
207 SvREADONLY_on(&PL_sv_no);
208 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
210 sv_setpv(&PL_sv_yes,PL_Yes);
212 SvREADONLY_on(&PL_sv_yes);
213 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
218 /* PL_sighandlerp = sighandler; */
220 PL_sighandlerp = Perl_sighandler;
222 PL_pidstatus = newHV();
226 * There is no way we can refer to them from Perl so close them to save
227 * space. The other alternative would be to provide STDAUX and STDPRN
230 (void)fclose(stdaux);
231 (void)fclose(stdprn);
235 PL_nrs = newSVpvn("\n", 1);
236 PL_rs = SvREFCNT_inc(PL_nrs);
241 PL_lex_state = LEX_NOTPARSING;
247 SET_NUMERIC_STANDARD();
251 PL_patchlevel = NEWSV(0,4);
252 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
253 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
254 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
255 s = (U8*)SvPVX(PL_patchlevel);
256 s = uv_to_utf8(s, (UV)PERL_REVISION);
257 s = uv_to_utf8(s, (UV)PERL_VERSION);
258 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
260 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
261 SvPOK_on(PL_patchlevel);
262 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
263 + ((NV)PERL_VERSION / (NV)1000)
264 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
265 + ((NV)PERL_SUBVERSION / (NV)1000000)
268 SvNOK_on(PL_patchlevel); /* dual valued */
269 SvUTF8_on(PL_patchlevel);
270 SvREADONLY_on(PL_patchlevel);
273 #if defined(LOCAL_PATCH_COUNT)
274 PL_localpatches = local_patches; /* For possible -v */
277 #ifdef HAVE_INTERP_INTERN
281 PerlIO_init(); /* Hook to IO system */
283 PL_fdpid = newAV(); /* for remembering popen pids by fd */
284 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
285 PL_errors = newSVpvn("",0);
291 =for apidoc perl_destruct
293 Shuts down a Perl interpreter. See L<perlembed>.
302 int destruct_level; /* 0=none, 1=full, 2=full with checks */
308 #endif /* USE_THREADS */
310 /* wait for all pseudo-forked children to finish */
311 PERL_WAIT_FOR_CHILDREN;
315 /* Pass 1 on any remaining threads: detach joinables, join zombies */
317 MUTEX_LOCK(&PL_threads_mutex);
318 DEBUG_S(PerlIO_printf(Perl_debug_log,
319 "perl_destruct: waiting for %d threads...\n",
321 for (t = thr->next; t != thr; t = t->next) {
322 MUTEX_LOCK(&t->mutex);
323 switch (ThrSTATE(t)) {
326 DEBUG_S(PerlIO_printf(Perl_debug_log,
327 "perl_destruct: joining zombie %p\n", t));
328 ThrSETSTATE(t, THRf_DEAD);
329 MUTEX_UNLOCK(&t->mutex);
332 * The SvREFCNT_dec below may take a long time (e.g. av
333 * may contain an object scalar whose destructor gets
334 * called) so we have to unlock threads_mutex and start
337 MUTEX_UNLOCK(&PL_threads_mutex);
339 SvREFCNT_dec((SV*)av);
340 DEBUG_S(PerlIO_printf(Perl_debug_log,
341 "perl_destruct: joined zombie %p OK\n", t));
343 case THRf_R_JOINABLE:
344 DEBUG_S(PerlIO_printf(Perl_debug_log,
345 "perl_destruct: detaching thread %p\n", t));
346 ThrSETSTATE(t, THRf_R_DETACHED);
348 * We unlock threads_mutex and t->mutex in the opposite order
349 * from which we locked them just so that DETACH won't
350 * deadlock if it panics. It's only a breach of good style
351 * not a bug since they are unlocks not locks.
353 MUTEX_UNLOCK(&PL_threads_mutex);
355 MUTEX_UNLOCK(&t->mutex);
358 DEBUG_S(PerlIO_printf(Perl_debug_log,
359 "perl_destruct: ignoring %p (state %u)\n",
361 MUTEX_UNLOCK(&t->mutex);
362 /* fall through and out */
365 /* We leave the above "Pass 1" loop with threads_mutex still locked */
367 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
368 while (PL_nthreads > 1)
370 DEBUG_S(PerlIO_printf(Perl_debug_log,
371 "perl_destruct: final wait for %d threads\n",
373 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
375 /* At this point, we're the last thread */
376 MUTEX_UNLOCK(&PL_threads_mutex);
377 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
378 MUTEX_DESTROY(&PL_threads_mutex);
379 COND_DESTROY(&PL_nthreads_cond);
381 #endif /* !defined(FAKE_THREADS) */
382 #endif /* USE_THREADS */
384 destruct_level = PL_perl_destruct_level;
388 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
390 if (destruct_level < i)
399 /* We must account for everything. */
401 /* Destroy the main CV and syntax tree */
403 PL_curpad = AvARRAY(PL_comppad);
404 op_free(PL_main_root);
405 PL_main_root = Nullop;
407 PL_curcop = &PL_compiling;
408 PL_main_start = Nullop;
409 SvREFCNT_dec(PL_main_cv);
413 if (PL_sv_objcount) {
415 * Try to destruct global references. We do this first so that the
416 * destructors and destructees still exist. Some sv's might remain.
417 * Non-referenced objects are on their own.
422 /* unhook hooks which will soon be, or use, destroyed data */
423 SvREFCNT_dec(PL_warnhook);
424 PL_warnhook = Nullsv;
425 SvREFCNT_dec(PL_diehook);
428 /* call exit list functions */
429 while (PL_exitlistlen-- > 0)
430 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
432 Safefree(PL_exitlist);
434 if (destruct_level == 0){
436 DEBUG_P(debprofdump());
438 /* The exit() function will do everything that needs doing. */
442 /* loosen bonds of global variables */
445 (void)PerlIO_close(PL_rsfp);
449 /* Filters for program text */
450 SvREFCNT_dec(PL_rsfp_filters);
451 PL_rsfp_filters = Nullav;
454 PL_preprocess = FALSE;
460 PL_doswitches = FALSE;
461 PL_dowarn = G_WARN_OFF;
462 PL_doextract = FALSE;
463 PL_sawampersand = FALSE; /* must save all match strings */
466 Safefree(PL_inplace);
468 SvREFCNT_dec(PL_patchlevel);
471 SvREFCNT_dec(PL_e_script);
472 PL_e_script = Nullsv;
475 /* magical thingies */
477 Safefree(PL_ofs); /* $, */
480 Safefree(PL_ors); /* $\ */
483 SvREFCNT_dec(PL_rs); /* $/ */
486 SvREFCNT_dec(PL_nrs); /* $/ helper */
489 PL_multiline = 0; /* $* */
490 Safefree(PL_osname); /* $^O */
493 SvREFCNT_dec(PL_statname);
494 PL_statname = Nullsv;
497 /* defgv, aka *_ should be taken care of elsewhere */
499 /* clean up after study() */
500 SvREFCNT_dec(PL_lastscream);
501 PL_lastscream = Nullsv;
502 Safefree(PL_screamfirst);
504 Safefree(PL_screamnext);
508 Safefree(PL_efloatbuf);
509 PL_efloatbuf = Nullch;
512 /* startup and shutdown function lists */
513 SvREFCNT_dec(PL_beginav);
514 SvREFCNT_dec(PL_endav);
515 SvREFCNT_dec(PL_checkav);
516 SvREFCNT_dec(PL_initav);
522 /* shortcuts just get cleared */
528 PL_argvoutgv = Nullgv;
530 PL_stderrgv = Nullgv;
531 PL_last_in_gv = Nullgv;
533 PL_debstash = Nullhv;
535 /* reset so print() ends up where we expect */
538 SvREFCNT_dec(PL_argvout_stack);
539 PL_argvout_stack = Nullav;
541 SvREFCNT_dec(PL_modglobal);
542 PL_modglobal = Nullhv;
543 SvREFCNT_dec(PL_preambleav);
544 PL_preambleav = Nullav;
545 SvREFCNT_dec(PL_subname);
547 SvREFCNT_dec(PL_linestr);
549 SvREFCNT_dec(PL_pidstatus);
550 PL_pidstatus = Nullhv;
551 SvREFCNT_dec(PL_toptarget);
552 PL_toptarget = Nullsv;
553 SvREFCNT_dec(PL_bodytarget);
554 PL_bodytarget = Nullsv;
555 PL_formtarget = Nullsv;
557 /* free locale stuff */
558 #ifdef USE_LOCALE_COLLATE
559 Safefree(PL_collation_name);
560 PL_collation_name = Nullch;
563 #ifdef USE_LOCALE_NUMERIC
564 Safefree(PL_numeric_name);
565 PL_numeric_name = Nullch;
568 /* clear utf8 character classes */
569 SvREFCNT_dec(PL_utf8_alnum);
570 SvREFCNT_dec(PL_utf8_alnumc);
571 SvREFCNT_dec(PL_utf8_ascii);
572 SvREFCNT_dec(PL_utf8_alpha);
573 SvREFCNT_dec(PL_utf8_space);
574 SvREFCNT_dec(PL_utf8_cntrl);
575 SvREFCNT_dec(PL_utf8_graph);
576 SvREFCNT_dec(PL_utf8_digit);
577 SvREFCNT_dec(PL_utf8_upper);
578 SvREFCNT_dec(PL_utf8_lower);
579 SvREFCNT_dec(PL_utf8_print);
580 SvREFCNT_dec(PL_utf8_punct);
581 SvREFCNT_dec(PL_utf8_xdigit);
582 SvREFCNT_dec(PL_utf8_mark);
583 SvREFCNT_dec(PL_utf8_toupper);
584 SvREFCNT_dec(PL_utf8_tolower);
585 PL_utf8_alnum = Nullsv;
586 PL_utf8_alnumc = Nullsv;
587 PL_utf8_ascii = Nullsv;
588 PL_utf8_alpha = Nullsv;
589 PL_utf8_space = Nullsv;
590 PL_utf8_cntrl = Nullsv;
591 PL_utf8_graph = Nullsv;
592 PL_utf8_digit = Nullsv;
593 PL_utf8_upper = Nullsv;
594 PL_utf8_lower = Nullsv;
595 PL_utf8_print = Nullsv;
596 PL_utf8_punct = Nullsv;
597 PL_utf8_xdigit = Nullsv;
598 PL_utf8_mark = Nullsv;
599 PL_utf8_toupper = Nullsv;
600 PL_utf8_totitle = Nullsv;
601 PL_utf8_tolower = Nullsv;
603 if (!specialWARN(PL_compiling.cop_warnings))
604 SvREFCNT_dec(PL_compiling.cop_warnings);
605 PL_compiling.cop_warnings = Nullsv;
606 if (!specialCopIO(PL_compiling.cop_io))
607 SvREFCNT_dec(PL_compiling.cop_io);
608 PL_compiling.cop_io = Nullsv;
610 Safefree(CopFILE(&PL_compiling));
611 CopFILE(&PL_compiling) = Nullch;
612 Safefree(CopSTASHPV(&PL_compiling));
614 SvREFCNT_dec(CopFILEGV(&PL_compiling));
615 CopFILEGV(&PL_compiling) = Nullgv;
616 /* cop_stash is not refcounted */
619 /* Prepare to destruct main symbol table. */
624 SvREFCNT_dec(PL_curstname);
625 PL_curstname = Nullsv;
627 /* clear queued errors */
628 SvREFCNT_dec(PL_errors);
632 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
633 if (PL_scopestack_ix != 0)
634 Perl_warner(aTHX_ WARN_INTERNAL,
635 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
636 (long)PL_scopestack_ix);
637 if (PL_savestack_ix != 0)
638 Perl_warner(aTHX_ WARN_INTERNAL,
639 "Unbalanced saves: %ld more saves than restores\n",
640 (long)PL_savestack_ix);
641 if (PL_tmps_floor != -1)
642 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
643 (long)PL_tmps_floor + 1);
644 if (cxstack_ix != -1)
645 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
646 (long)cxstack_ix + 1);
649 /* Now absolutely destruct everything, somehow or other, loops or no. */
651 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
652 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
653 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
654 last_sv_count = PL_sv_count;
657 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
658 SvFLAGS(PL_fdpid) |= SVt_PVAV;
659 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
660 SvFLAGS(PL_strtab) |= SVt_PVHV;
662 AvREAL_off(PL_fdpid); /* no surviving entries */
663 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
666 #ifdef HAVE_INTERP_INTERN
670 /* Destruct the global string table. */
672 /* Yell and reset the HeVAL() slots that are still holding refcounts,
673 * so that sv_free() won't fail on them.
681 max = HvMAX(PL_strtab);
682 array = HvARRAY(PL_strtab);
685 if (hent && ckWARN_d(WARN_INTERNAL)) {
686 Perl_warner(aTHX_ WARN_INTERNAL,
687 "Unbalanced string table refcount: (%d) for \"%s\"",
688 HeVAL(hent) - Nullsv, HeKEY(hent));
689 HeVAL(hent) = Nullsv;
699 SvREFCNT_dec(PL_strtab);
701 /* free special SVs */
703 SvREFCNT(&PL_sv_yes) = 0;
704 sv_clear(&PL_sv_yes);
705 SvANY(&PL_sv_yes) = NULL;
706 SvFLAGS(&PL_sv_yes) = 0;
708 SvREFCNT(&PL_sv_no) = 0;
710 SvANY(&PL_sv_no) = NULL;
711 SvFLAGS(&PL_sv_no) = 0;
713 SvREFCNT(&PL_sv_undef) = 0;
714 SvREADONLY_off(&PL_sv_undef);
716 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
717 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
719 Safefree(PL_origfilename);
720 Safefree(PL_reg_start_tmp);
722 Safefree(PL_reg_curpm);
723 Safefree(PL_reg_poscache);
724 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
725 Safefree(PL_op_mask);
726 Safefree(PL_psig_ptr);
727 Safefree(PL_psig_name);
729 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
731 DEBUG_P(debprofdump());
733 MUTEX_DESTROY(&PL_strtab_mutex);
734 MUTEX_DESTROY(&PL_sv_mutex);
735 MUTEX_DESTROY(&PL_eval_mutex);
736 MUTEX_DESTROY(&PL_cred_mutex);
737 MUTEX_DESTROY(&PL_fdpid_mutex);
738 COND_DESTROY(&PL_eval_cond);
739 #ifdef EMULATE_ATOMIC_REFCOUNTS
740 MUTEX_DESTROY(&PL_svref_mutex);
741 #endif /* EMULATE_ATOMIC_REFCOUNTS */
743 /* As the penultimate thing, free the non-arena SV for thrsv */
744 Safefree(SvPVX(PL_thrsv));
745 Safefree(SvANY(PL_thrsv));
748 #endif /* USE_THREADS */
752 /* As the absolutely last thing, free the non-arena SV for mess() */
755 /* it could have accumulated taint magic */
756 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
759 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
760 moremagic = mg->mg_moremagic;
761 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
762 Safefree(mg->mg_ptr);
766 /* we know that type >= SVt_PV */
767 (void)SvOOK_off(PL_mess_sv);
768 Safefree(SvPVX(PL_mess_sv));
769 Safefree(SvANY(PL_mess_sv));
770 Safefree(PL_mess_sv);
776 =for apidoc perl_free
778 Releases a Perl interpreter. See L<perlembed>.
786 #if defined(PERL_OBJECT)
789 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
790 void *host = w32_internal_host;
792 win32_delete_internal_host(host);
800 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
802 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
803 PL_exitlist[PL_exitlistlen].fn = fn;
804 PL_exitlist[PL_exitlistlen].ptr = ptr;
809 =for apidoc perl_parse
811 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
817 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
827 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
830 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
831 setuid perl scripts securely.\n");
835 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
836 _dyld_lookup_and_bind
837 ("__environ", (unsigned long *) &environ_pointer, NULL);
842 #ifdef USE_ENVIRON_ARRAY
843 PL_origenviron = environ;
848 /* Come here if running an undumped a.out. */
850 PL_origfilename = savepv(argv[0]);
851 PL_do_undump = FALSE;
852 cxstack_ix = -1; /* start label stack again */
854 init_postdump_symbols(argc,argv,env);
859 PL_curpad = AvARRAY(PL_comppad);
860 op_free(PL_main_root);
861 PL_main_root = Nullop;
863 PL_main_start = Nullop;
864 SvREFCNT_dec(PL_main_cv);
868 oldscope = PL_scopestack_ix;
869 PL_dowarn = G_WARN_OFF;
871 #ifdef PERL_FLEXIBLE_EXCEPTIONS
872 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
878 #ifndef PERL_FLEXIBLE_EXCEPTIONS
879 parse_body(env,xsinit);
882 call_list(oldscope, PL_checkav);
889 /* my_exit() was called */
890 while (PL_scopestack_ix > oldscope)
893 PL_curstash = PL_defstash;
895 call_list(oldscope, PL_checkav);
896 ret = STATUS_NATIVE_EXPORT;
899 PerlIO_printf(Perl_error_log, "panic: top_env\n");
907 #ifdef PERL_FLEXIBLE_EXCEPTIONS
909 S_vparse_body(pTHX_ va_list args)
911 char **env = va_arg(args, char**);
912 XSINIT_t xsinit = va_arg(args, XSINIT_t);
914 return parse_body(env, xsinit);
919 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
922 int argc = PL_origargc;
923 char **argv = PL_origargv;
924 char *scriptname = NULL;
926 VOL bool dosearch = FALSE;
931 char *cddir = Nullch;
933 sv_setpvn(PL_linestr,"",0);
934 sv = newSVpvn("",0); /* first used for -I flags */
938 for (argc--,argv++; argc > 0; argc--,argv++) {
939 if (argv[0][0] != '-' || !argv[0][1])
943 validarg = " PHOOEY ";
952 win32_argv2utf8(argc-1, argv+1);
955 #ifndef PERL_STRICT_CR
979 if ((s = moreswitches(s)))
989 #ifdef MACOS_TRADITIONAL
990 /* ignore -e for Dev:Pseudo argument */
991 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
994 if (PL_euid != PL_uid || PL_egid != PL_gid)
995 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
997 PL_e_script = newSVpvn("",0);
998 filter_add(read_e_script, NULL);
1001 sv_catpv(PL_e_script, s);
1003 sv_catpv(PL_e_script, argv[1]);
1007 Perl_croak(aTHX_ "No code specified for -e");
1008 sv_catpv(PL_e_script, "\n");
1011 case 'I': /* -I handled both here and in moreswitches() */
1013 if (!*++s && (s=argv[1]) != Nullch) {
1018 STRLEN len = strlen(s);
1019 p = savepvn(s, len);
1020 incpush(p, TRUE, TRUE);
1021 sv_catpvn(sv, "-I", 2);
1022 sv_catpvn(sv, p, len);
1023 sv_catpvn(sv, " ", 1);
1027 Perl_croak(aTHX_ "No directory specified for -I");
1031 PL_preprocess = TRUE;
1041 PL_preambleav = newAV();
1042 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1044 PL_Sv = newSVpv("print myconfig();",0);
1046 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1048 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1050 sv_catpv(PL_Sv,"\" Compile-time options:");
1052 sv_catpv(PL_Sv," DEBUGGING");
1054 # ifdef MULTIPLICITY
1055 sv_catpv(PL_Sv," MULTIPLICITY");
1058 sv_catpv(PL_Sv," USE_THREADS");
1060 # ifdef USE_ITHREADS
1061 sv_catpv(PL_Sv," USE_ITHREADS");
1063 # ifdef USE_64_BIT_INT
1064 sv_catpv(PL_Sv," USE_64_BIT_INT");
1066 # ifdef USE_64_BIT_ALL
1067 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1069 # ifdef USE_LONG_DOUBLE
1070 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1072 # ifdef USE_LARGE_FILES
1073 sv_catpv(PL_Sv," USE_LARGE_FILES");
1076 sv_catpv(PL_Sv," USE_SOCKS");
1079 sv_catpv(PL_Sv," PERL_OBJECT");
1081 # ifdef PERL_IMPLICIT_CONTEXT
1082 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1084 # ifdef PERL_IMPLICIT_SYS
1085 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1087 sv_catpv(PL_Sv,"\\n\",");
1089 #if defined(LOCAL_PATCH_COUNT)
1090 if (LOCAL_PATCH_COUNT > 0) {
1092 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1093 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1094 if (PL_localpatches[i])
1095 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1099 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1102 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1104 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1107 sv_catpv(PL_Sv, "; \
1109 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1110 print \" \\%ENV:\\n @env\\n\" if @env; \
1111 print \" \\@INC:\\n @INC\\n\";");
1114 PL_Sv = newSVpv("config_vars(qw(",0);
1115 sv_catpv(PL_Sv, ++s);
1116 sv_catpv(PL_Sv, "))");
1119 av_push(PL_preambleav, PL_Sv);
1120 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1123 PL_doextract = TRUE;
1131 if (!*++s || isSPACE(*s)) {
1135 /* catch use of gnu style long options */
1136 if (strEQ(s, "version")) {
1140 if (strEQ(s, "help")) {
1147 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1153 #ifndef SECURE_INTERNAL_GETENV
1156 (s = PerlEnv_getenv("PERL5OPT")))
1160 if (*s == '-' && *(s+1) == 'T')
1173 if (!strchr("DIMUdmw", *s))
1174 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1175 s = moreswitches(s);
1181 scriptname = argv[0];
1184 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1186 else if (scriptname == Nullch) {
1188 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1196 open_script(scriptname,dosearch,sv,&fdscript);
1198 validate_suid(validarg, scriptname,fdscript);
1201 #if defined(SIGCHLD) || defined(SIGCLD)
1204 # define SIGCHLD SIGCLD
1206 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1207 if (sigstate == SIG_IGN) {
1208 if (ckWARN(WARN_SIGNAL))
1209 Perl_warner(aTHX_ WARN_SIGNAL,
1210 "Can't ignore signal CHLD, forcing to default");
1211 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1217 #ifdef MACOS_TRADITIONAL
1218 if (PL_doextract || gMacPerl_AlwaysExtract) {
1223 if (cddir && PerlDir_chdir(cddir) < 0)
1224 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1228 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1229 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1230 CvUNIQUE_on(PL_compcv);
1232 PL_comppad = newAV();
1233 av_push(PL_comppad, Nullsv);
1234 PL_curpad = AvARRAY(PL_comppad);
1235 PL_comppad_name = newAV();
1236 PL_comppad_name_fill = 0;
1237 PL_min_intro_pending = 0;
1240 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1241 PL_curpad[0] = (SV*)newAV();
1242 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1243 CvOWNER(PL_compcv) = 0;
1244 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1245 MUTEX_INIT(CvMUTEXP(PL_compcv));
1246 #endif /* USE_THREADS */
1248 comppadlist = newAV();
1249 AvREAL_off(comppadlist);
1250 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1251 av_store(comppadlist, 1, (SV*)PL_comppad);
1252 CvPADLIST(PL_compcv) = comppadlist;
1254 boot_core_UNIVERSAL();
1256 boot_core_xsutils();
1260 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1262 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1268 # ifdef HAS_SOCKS5_INIT
1269 socks5_init(argv[0]);
1275 init_predump_symbols();
1276 /* init_postdump_symbols not currently designed to be called */
1277 /* more than once (ENV isn't cleared first, for example) */
1278 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1280 init_postdump_symbols(argc,argv,env);
1284 /* now parse the script */
1286 SETERRNO(0,SS$_NORMAL);
1288 #ifdef MACOS_TRADITIONAL
1289 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1291 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1293 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1294 MacPerl_MPWFileName(PL_origfilename));
1298 if (yyparse() || PL_error_count) {
1300 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1302 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1307 CopLINE_set(PL_curcop, 0);
1308 PL_curstash = PL_defstash;
1309 PL_preprocess = FALSE;
1311 SvREFCNT_dec(PL_e_script);
1312 PL_e_script = Nullsv;
1315 /* now that script is parsed, we can modify record separator */
1316 SvREFCNT_dec(PL_rs);
1317 PL_rs = SvREFCNT_inc(PL_nrs);
1318 sv_setsv(get_sv("/", TRUE), PL_rs);
1323 SAVECOPFILE(PL_curcop);
1324 SAVECOPLINE(PL_curcop);
1325 gv_check(PL_defstash);
1332 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1333 dump_mstats("after compilation:");
1342 =for apidoc perl_run
1344 Tells a Perl interpreter to run. See L<perlembed>.
1360 oldscope = PL_scopestack_ix;
1362 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1364 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1370 cxstack_ix = -1; /* start context stack again */
1372 case 0: /* normal completion */
1373 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1378 case 2: /* my_exit() */
1379 while (PL_scopestack_ix > oldscope)
1382 PL_curstash = PL_defstash;
1383 if (PL_endav && !PL_minus_c)
1384 call_list(oldscope, PL_endav);
1386 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1387 dump_mstats("after execution: ");
1389 ret = STATUS_NATIVE_EXPORT;
1393 POPSTACK_TO(PL_mainstack);
1396 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1406 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1408 S_vrun_body(pTHX_ va_list args)
1410 I32 oldscope = va_arg(args, I32);
1412 return run_body(oldscope);
1418 S_run_body(pTHX_ I32 oldscope)
1422 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1423 PL_sawampersand ? "Enabling" : "Omitting"));
1425 if (!PL_restartop) {
1426 DEBUG_x(dump_all());
1427 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1428 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1432 #ifdef MACOS_TRADITIONAL
1433 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1435 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1439 if (PERLDB_SINGLE && PL_DBsingle)
1440 sv_setiv(PL_DBsingle, 1);
1442 call_list(oldscope, PL_initav);
1448 PL_op = PL_restartop;
1452 else if (PL_main_start) {
1453 CvDEPTH(PL_main_cv) = 1;
1454 PL_op = PL_main_start;
1464 =for apidoc p||get_sv
1466 Returns the SV of the specified Perl scalar. If C<create> is set and the
1467 Perl variable does not exist then it will be created. If C<create> is not
1468 set and the variable does not exist then NULL is returned.
1474 Perl_get_sv(pTHX_ const char *name, I32 create)
1478 if (name[1] == '\0' && !isALPHA(name[0])) {
1479 PADOFFSET tmp = find_threadsv(name);
1480 if (tmp != NOT_IN_PAD) {
1482 return THREADSV(tmp);
1485 #endif /* USE_THREADS */
1486 gv = gv_fetchpv(name, create, SVt_PV);
1493 =for apidoc p||get_av
1495 Returns the AV of the specified Perl array. If C<create> is set and the
1496 Perl variable does not exist then it will be created. If C<create> is not
1497 set and the variable does not exist then NULL is returned.
1503 Perl_get_av(pTHX_ const char *name, I32 create)
1505 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1514 =for apidoc p||get_hv
1516 Returns the HV of the specified Perl hash. If C<create> is set and the
1517 Perl variable does not exist then it will be created. If C<create> is not
1518 set and the variable does not exist then NULL is returned.
1524 Perl_get_hv(pTHX_ const char *name, I32 create)
1526 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1535 =for apidoc p||get_cv
1537 Returns the CV of the specified Perl subroutine. If C<create> is set and
1538 the Perl subroutine does not exist then it will be declared (which has the
1539 same effect as saying C<sub name;>). If C<create> is not set and the
1540 subroutine does not exist then NULL is returned.
1546 Perl_get_cv(pTHX_ const char *name, I32 create)
1548 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1549 /* XXX unsafe for threads if eval_owner isn't held */
1550 /* XXX this is probably not what they think they're getting.
1551 * It has the same effect as "sub name;", i.e. just a forward
1553 if (create && !GvCVu(gv))
1554 return newSUB(start_subparse(FALSE, 0),
1555 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1563 /* Be sure to refetch the stack pointer after calling these routines. */
1566 =for apidoc p||call_argv
1568 Performs a callback to the specified Perl sub. See L<perlcall>.
1574 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1576 /* See G_* flags in cop.h */
1577 /* null terminated arg list */
1584 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1589 return call_pv(sub_name, flags);
1593 =for apidoc p||call_pv
1595 Performs a callback to the specified Perl sub. See L<perlcall>.
1601 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1602 /* name of the subroutine */
1603 /* See G_* flags in cop.h */
1605 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1609 =for apidoc p||call_method
1611 Performs a callback to the specified Perl method. The blessed object must
1612 be on the stack. See L<perlcall>.
1618 Perl_call_method(pTHX_ const char *methname, I32 flags)
1619 /* name of the subroutine */
1620 /* See G_* flags in cop.h */
1622 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1625 /* May be called with any of a CV, a GV, or an SV containing the name. */
1627 =for apidoc p||call_sv
1629 Performs a callback to the Perl sub whose name is in the SV. See
1636 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1637 /* See G_* flags in cop.h */
1640 LOGOP myop; /* fake syntax tree node */
1645 bool oldcatch = CATCH_GET;
1650 if (flags & G_DISCARD) {
1655 Zero(&myop, 1, LOGOP);
1656 myop.op_next = Nullop;
1657 if (!(flags & G_NOARGS))
1658 myop.op_flags |= OPf_STACKED;
1659 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1660 (flags & G_ARRAY) ? OPf_WANT_LIST :
1665 EXTEND(PL_stack_sp, 1);
1666 *++PL_stack_sp = sv;
1668 oldscope = PL_scopestack_ix;
1670 if (PERLDB_SUB && PL_curstash != PL_debstash
1671 /* Handle first BEGIN of -d. */
1672 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1673 /* Try harder, since this may have been a sighandler, thus
1674 * curstash may be meaningless. */
1675 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1676 && !(flags & G_NODEBUG))
1677 PL_op->op_private |= OPpENTERSUB_DB;
1679 if (flags & G_METHOD) {
1680 Zero(&method_op, 1, UNOP);
1681 method_op.op_next = PL_op;
1682 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1683 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1684 PL_op = (OP*)&method_op;
1687 if (!(flags & G_EVAL)) {
1689 call_body((OP*)&myop, FALSE);
1690 retval = PL_stack_sp - (PL_stack_base + oldmark);
1691 CATCH_SET(oldcatch);
1694 myop.op_other = (OP*)&myop;
1696 /* we're trying to emulate pp_entertry() here */
1698 register PERL_CONTEXT *cx;
1699 I32 gimme = GIMME_V;
1704 push_return(Nullop);
1705 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1707 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1709 PL_in_eval = EVAL_INEVAL;
1710 if (flags & G_KEEPERR)
1711 PL_in_eval |= EVAL_KEEPERR;
1717 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1719 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1726 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1728 call_body((OP*)&myop, FALSE);
1730 retval = PL_stack_sp - (PL_stack_base + oldmark);
1731 if (!(flags & G_KEEPERR))
1738 /* my_exit() was called */
1739 PL_curstash = PL_defstash;
1742 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1743 Perl_croak(aTHX_ "Callback called exit");
1748 PL_op = PL_restartop;
1752 PL_stack_sp = PL_stack_base + oldmark;
1753 if (flags & G_ARRAY)
1757 *++PL_stack_sp = &PL_sv_undef;
1762 if (PL_scopestack_ix > oldscope) {
1766 register PERL_CONTEXT *cx;
1778 if (flags & G_DISCARD) {
1779 PL_stack_sp = PL_stack_base + oldmark;
1788 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1790 S_vcall_body(pTHX_ va_list args)
1792 OP *myop = va_arg(args, OP*);
1793 int is_eval = va_arg(args, int);
1795 call_body(myop, is_eval);
1801 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)
2038 numlen = 0; /* disallow underscores */
2039 rschar = (U32)scan_oct(s, 4, &numlen);
2040 SvREFCNT_dec(PL_nrs);
2041 if (rschar & ~((U8)~0))
2042 PL_nrs = &PL_sv_undef;
2043 else if (!rschar && numlen >= 2)
2044 PL_nrs = newSVpvn("", 0);
2047 PL_nrs = newSVpvn(&ch, 1);
2052 PL_widesyscalls = TRUE;
2057 PL_splitstr = savepv(s + 1);
2071 /* The following permits -d:Mod to accepts arguments following an =
2072 in the fashion that -MSome::Mod does. */
2073 if (*s == ':' || *s == '=') {
2076 sv = newSVpv("use Devel::", 0);
2078 /* We now allow -d:Module=Foo,Bar */
2079 while(isALNUM(*s) || *s==':') ++s;
2081 sv_catpv(sv, start);
2083 sv_catpvn(sv, start, s-start);
2084 sv_catpv(sv, " split(/,/,q{");
2089 my_setenv("PERL5DB", SvPV(sv, PL_na));
2092 PL_perldb = PERLDB_ALL;
2100 if (isALPHA(s[1])) {
2101 static char debopts[] = "psltocPmfrxuLHXDST";
2104 for (s++; *s && (d = strchr(debopts,*s)); s++)
2105 PL_debug |= 1 << (d - debopts);
2108 PL_debug = atoi(s+1);
2109 for (s++; isDIGIT(*s); s++) ;
2111 PL_debug |= 0x80000000;
2114 if (ckWARN_d(WARN_DEBUGGING))
2115 Perl_warner(aTHX_ WARN_DEBUGGING,
2116 "Recompile perl with -DDEBUGGING to use -D switch\n");
2117 for (s++; isALNUM(*s); s++) ;
2123 usage(PL_origargv[0]);
2127 Safefree(PL_inplace);
2128 PL_inplace = savepv(s+1);
2130 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2133 if (*s == '-') /* Additional switches on #! line. */
2137 case 'I': /* -I handled both here and in parse_perl() */
2140 while (*s && isSPACE(*s))
2145 /* ignore trailing spaces (possibly followed by other switches) */
2147 for (e = p; *e && !isSPACE(*e); e++) ;
2151 } while (*p && *p != '-');
2152 e = savepvn(s, e-s);
2153 incpush(e, TRUE, TRUE);
2160 Perl_croak(aTHX_ "No directory specified for -I");
2168 PL_ors = savepv("\n");
2170 numlen = 0; /* disallow underscores */
2171 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2176 if (RsPARA(PL_nrs)) {
2181 PL_ors = SvPV(PL_nrs, PL_orslen);
2182 PL_ors = savepvn(PL_ors, PL_orslen);
2186 forbid_setid("-M"); /* XXX ? */
2189 forbid_setid("-m"); /* XXX ? */
2194 /* -M-foo == 'no foo' */
2195 if (*s == '-') { use = "no "; ++s; }
2196 sv = newSVpv(use,0);
2198 /* We allow -M'Module qw(Foo Bar)' */
2199 while(isALNUM(*s) || *s==':') ++s;
2201 sv_catpv(sv, start);
2202 if (*(start-1) == 'm') {
2204 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2205 sv_catpv( sv, " ()");
2209 Perl_croak(aTHX_ "Module name required with -%c option",
2211 sv_catpvn(sv, start, s-start);
2212 sv_catpv(sv, " split(/,/,q{");
2218 PL_preambleav = newAV();
2219 av_push(PL_preambleav, sv);
2222 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2234 PL_doswitches = TRUE;
2239 Perl_croak(aTHX_ "Too late for \"-T\" option");
2243 #ifdef MACOS_TRADITIONAL
2244 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2246 PL_do_undump = TRUE;
2254 PerlIO_printf(PerlIO_stdout(),
2255 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
2256 PL_patchlevel, ARCHNAME));
2257 #if defined(LOCAL_PATCH_COUNT)
2258 if (LOCAL_PATCH_COUNT > 0)
2259 PerlIO_printf(PerlIO_stdout(),
2260 "\n(with %d registered patch%s, "
2261 "see perl -V for more detail)",
2262 (int)LOCAL_PATCH_COUNT,
2263 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2266 PerlIO_printf(PerlIO_stdout(),
2267 "\n\nCopyright 1987-2000, Larry Wall\n");
2268 #ifdef MACOS_TRADITIONAL
2269 PerlIO_printf(PerlIO_stdout(),
2270 "\nMacOS port Copyright (c) 1991-2000, Matthias Neeracher\n");
2273 PerlIO_printf(PerlIO_stdout(),
2274 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2277 PerlIO_printf(PerlIO_stdout(),
2278 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2279 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2282 PerlIO_printf(PerlIO_stdout(),
2283 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2284 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2287 PerlIO_printf(PerlIO_stdout(),
2288 "atariST series port, ++jrb bammi@cadence.com\n");
2291 PerlIO_printf(PerlIO_stdout(),
2292 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2295 PerlIO_printf(PerlIO_stdout(),
2296 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2299 PerlIO_printf(PerlIO_stdout(),
2300 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2303 PerlIO_printf(PerlIO_stdout(),
2304 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2307 PerlIO_printf(PerlIO_stdout(),
2308 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2311 PerlIO_printf(PerlIO_stdout(),
2312 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2315 PerlIO_printf(PerlIO_stdout(),
2316 "MiNT port by Guido Flohr, 1997-1999\n");
2319 PerlIO_printf(PerlIO_stdout(),
2320 "EPOC port by Olaf Flebbe, 1999-2000\n");
2322 #ifdef BINARY_BUILD_NOTICE
2323 BINARY_BUILD_NOTICE;
2325 PerlIO_printf(PerlIO_stdout(),
2327 Perl may be copied only under the terms of either the Artistic License or the\n\
2328 GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
2329 Complete documentation for Perl, including FAQ lists, should be found on\n\
2330 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2331 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2334 if (! (PL_dowarn & G_WARN_ALL_MASK))
2335 PL_dowarn |= G_WARN_ON;
2339 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2340 PL_compiling.cop_warnings = pWARN_ALL ;
2344 PL_dowarn = G_WARN_ALL_OFF;
2345 PL_compiling.cop_warnings = pWARN_NONE ;
2350 if (s[1] == '-') /* Additional switches on #! line. */
2355 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2361 #ifdef ALTERNATE_SHEBANG
2362 case 'S': /* OS/2 needs -S on "extproc" line. */
2370 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2375 /* compliments of Tom Christiansen */
2377 /* unexec() can be found in the Gnu emacs distribution */
2378 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2381 Perl_my_unexec(pTHX)
2389 prog = newSVpv(BIN_EXP, 0);
2390 sv_catpv(prog, "/perl");
2391 file = newSVpv(PL_origfilename, 0);
2392 sv_catpv(file, ".perldump");
2394 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2395 /* unexec prints msg to stderr in case of failure */
2396 PerlProc_exit(status);
2399 # include <lib$routines.h>
2400 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2402 ABORT(); /* for use with undump */
2407 /* initialize curinterp */
2412 #ifdef PERL_OBJECT /* XXX kludge */
2415 PL_chopset = " \n-"; \
2416 PL_copline = NOLINE; \
2417 PL_curcop = &PL_compiling;\
2418 PL_curcopdb = NULL; \
2420 PL_dumpindent = 4; \
2421 PL_laststatval = -1; \
2422 PL_laststype = OP_STAT; \
2423 PL_maxscream = -1; \
2424 PL_maxsysfd = MAXSYSFD; \
2425 PL_statname = Nullsv; \
2426 PL_tmps_floor = -1; \
2428 PL_op_mask = NULL; \
2429 PL_laststatval = -1; \
2430 PL_laststype = OP_STAT; \
2431 PL_mess_sv = Nullsv; \
2432 PL_splitstr = " "; \
2433 PL_generation = 100; \
2434 PL_exitlist = NULL; \
2435 PL_exitlistlen = 0; \
2437 PL_in_clean_objs = FALSE; \
2438 PL_in_clean_all = FALSE; \
2439 PL_profiledata = NULL; \
2441 PL_rsfp_filters = Nullav; \
2446 # ifdef MULTIPLICITY
2447 # define PERLVAR(var,type)
2448 # define PERLVARA(var,n,type)
2449 # if defined(PERL_IMPLICIT_CONTEXT)
2450 # if defined(USE_THREADS)
2451 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2452 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2453 # else /* !USE_THREADS */
2454 # define PERLVARI(var,type,init) aTHX->var = init;
2455 # define PERLVARIC(var,type,init) aTHX->var = init;
2456 # endif /* USE_THREADS */
2458 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2459 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2461 # include "intrpvar.h"
2462 # ifndef USE_THREADS
2463 # include "thrdvar.h"
2470 # define PERLVAR(var,type)
2471 # define PERLVARA(var,n,type)
2472 # define PERLVARI(var,type,init) PL_##var = init;
2473 # define PERLVARIC(var,type,init) PL_##var = init;
2474 # include "intrpvar.h"
2475 # ifndef USE_THREADS
2476 # include "thrdvar.h"
2488 S_init_main_stash(pTHX)
2493 /* Note that strtab is a rather special HV. Assumptions are made
2494 about not iterating on it, and not adding tie magic to it.
2495 It is properly deallocated in perl_destruct() */
2496 PL_strtab = newHV();
2498 MUTEX_INIT(&PL_strtab_mutex);
2500 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2501 hv_ksplit(PL_strtab, 512);
2503 PL_curstash = PL_defstash = newHV();
2504 PL_curstname = newSVpvn("main",4);
2505 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2506 SvREFCNT_dec(GvHV(gv));
2507 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2509 HvNAME(PL_defstash) = savepv("main");
2510 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2511 GvMULTI_on(PL_incgv);
2512 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2513 GvMULTI_on(PL_hintgv);
2514 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2515 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2516 GvMULTI_on(PL_errgv);
2517 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2518 GvMULTI_on(PL_replgv);
2519 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2520 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2521 sv_setpvn(ERRSV, "", 0);
2522 PL_curstash = PL_defstash;
2523 CopSTASH_set(&PL_compiling, PL_defstash);
2524 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2525 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2526 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2527 /* We must init $/ before switches are processed. */
2528 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2532 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2539 PL_origfilename = savepv("-e");
2542 /* if find_script() returns, it returns a malloc()-ed value */
2543 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2545 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2546 char *s = scriptname + 8;
2547 *fdscript = atoi(s);
2551 scriptname = savepv(s + 1);
2552 Safefree(PL_origfilename);
2553 PL_origfilename = scriptname;
2559 Safefree(CopFILE(PL_curcop));
2561 SvREFCNT_dec(CopFILEGV(PL_curcop));
2563 CopFILE_set(PL_curcop, PL_origfilename);
2564 if (strEQ(PL_origfilename,"-"))
2566 if (*fdscript >= 0) {
2567 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2568 #if defined(HAS_FCNTL) && defined(F_SETFD)
2570 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2573 else if (PL_preprocess) {
2574 char *cpp_cfg = CPPSTDIN;
2575 SV *cpp = newSVpvn("",0);
2576 SV *cmd = NEWSV(0,0);
2578 if (strEQ(cpp_cfg, "cppstdin"))
2579 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2580 sv_catpv(cpp, cpp_cfg);
2582 sv_catpvn(sv, "-I", 2);
2583 sv_catpv(sv,PRIVLIB_EXP);
2585 #if defined(MSDOS) || defined(WIN32)
2586 Perl_sv_setpvf(aTHX_ cmd, "\
2587 sed %s -e \"/^[^#]/b\" \
2588 -e \"/^#[ ]*include[ ]/b\" \
2589 -e \"/^#[ ]*define[ ]/b\" \
2590 -e \"/^#[ ]*if[ ]/b\" \
2591 -e \"/^#[ ]*ifdef[ ]/b\" \
2592 -e \"/^#[ ]*ifndef[ ]/b\" \
2593 -e \"/^#[ ]*else/b\" \
2594 -e \"/^#[ ]*elif[ ]/b\" \
2595 -e \"/^#[ ]*undef[ ]/b\" \
2596 -e \"/^#[ ]*endif/b\" \
2598 %s | %"SVf" -C %"SVf" %s",
2599 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2602 Perl_sv_setpvf(aTHX_ cmd, "\
2603 %s %s -e '/^[^#]/b' \
2604 -e '/^#[ ]*include[ ]/b' \
2605 -e '/^#[ ]*define[ ]/b' \
2606 -e '/^#[ ]*if[ ]/b' \
2607 -e '/^#[ ]*ifdef[ ]/b' \
2608 -e '/^#[ ]*ifndef[ ]/b' \
2609 -e '/^#[ ]*else/b' \
2610 -e '/^#[ ]*elif[ ]/b' \
2611 -e '/^#[ ]*undef[ ]/b' \
2612 -e '/^#[ ]*endif/b' \
2614 %s | %"SVf" %"SVf" %s",
2616 Perl_sv_setpvf(aTHX_ cmd, "\
2617 %s %s -e '/^[^#]/b' \
2618 -e '/^#[ ]*include[ ]/b' \
2619 -e '/^#[ ]*define[ ]/b' \
2620 -e '/^#[ ]*if[ ]/b' \
2621 -e '/^#[ ]*ifdef[ ]/b' \
2622 -e '/^#[ ]*ifndef[ ]/b' \
2623 -e '/^#[ ]*else/b' \
2624 -e '/^#[ ]*elif[ ]/b' \
2625 -e '/^#[ ]*undef[ ]/b' \
2626 -e '/^#[ ]*endif/b' \
2628 %s | %"SVf" -C %"SVf" %s",
2635 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2637 scriptname, cpp, sv, CPPMINUS);
2638 PL_doextract = FALSE;
2639 #ifdef IAMSUID /* actually, this is caught earlier */
2640 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2642 (void)seteuid(PL_uid); /* musn't stay setuid root */
2645 (void)setreuid((Uid_t)-1, PL_uid);
2647 #ifdef HAS_SETRESUID
2648 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2650 PerlProc_setuid(PL_uid);
2654 if (PerlProc_geteuid() != PL_uid)
2655 Perl_croak(aTHX_ "Can't do seteuid!\n");
2657 #endif /* IAMSUID */
2658 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2662 else if (!*scriptname) {
2663 forbid_setid("program input from stdin");
2664 PL_rsfp = PerlIO_stdin();
2667 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2668 #if defined(HAS_FCNTL) && defined(F_SETFD)
2670 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2675 #ifndef IAMSUID /* in case script is not readable before setuid */
2677 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2678 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2681 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2682 (int)PERL_REVISION, (int)PERL_VERSION,
2683 (int)PERL_SUBVERSION), PL_origargv);
2684 Perl_croak(aTHX_ "Can't do setuid\n");
2688 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2689 CopFILE(PL_curcop), Strerror(errno));
2694 * I_SYSSTATVFS HAS_FSTATVFS
2696 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2697 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2698 * here so that metaconfig picks them up. */
2702 S_fd_on_nosuid_fs(pTHX_ int fd)
2704 int check_okay = 0; /* able to do all the required sys/libcalls */
2705 int on_nosuid = 0; /* the fd is on a nosuid fs */
2707 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2708 * fstatvfs() is UNIX98.
2709 * fstatfs() is 4.3 BSD.
2710 * ustat()+getmnt() is pre-4.3 BSD.
2711 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2712 * an irrelevant filesystem while trying to reach the right one.
2715 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2717 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2718 defined(HAS_FSTATVFS)
2719 # define FD_ON_NOSUID_CHECK_OKAY
2720 struct statvfs stfs;
2722 check_okay = fstatvfs(fd, &stfs) == 0;
2723 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2724 # endif /* fstatvfs */
2726 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2727 defined(PERL_MOUNT_NOSUID) && \
2728 defined(HAS_FSTATFS) && \
2729 defined(HAS_STRUCT_STATFS) && \
2730 defined(HAS_STRUCT_STATFS_F_FLAGS)
2731 # define FD_ON_NOSUID_CHECK_OKAY
2734 check_okay = fstatfs(fd, &stfs) == 0;
2735 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2736 # endif /* fstatfs */
2738 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2739 defined(PERL_MOUNT_NOSUID) && \
2740 defined(HAS_FSTAT) && \
2741 defined(HAS_USTAT) && \
2742 defined(HAS_GETMNT) && \
2743 defined(HAS_STRUCT_FS_DATA) && \
2745 # define FD_ON_NOSUID_CHECK_OKAY
2748 if (fstat(fd, &fdst) == 0) {
2750 if (ustat(fdst.st_dev, &us) == 0) {
2752 /* NOSTAT_ONE here because we're not examining fields which
2753 * vary between that case and STAT_ONE. */
2754 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2755 size_t cmplen = sizeof(us.f_fname);
2756 if (sizeof(fsd.fd_req.path) < cmplen)
2757 cmplen = sizeof(fsd.fd_req.path);
2758 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2759 fdst.st_dev == fsd.fd_req.dev) {
2761 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2767 # endif /* fstat+ustat+getmnt */
2769 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2770 defined(HAS_GETMNTENT) && \
2771 defined(HAS_HASMNTOPT) && \
2772 defined(MNTOPT_NOSUID)
2773 # define FD_ON_NOSUID_CHECK_OKAY
2774 FILE *mtab = fopen("/etc/mtab", "r");
2775 struct mntent *entry;
2776 struct stat stb, fsb;
2778 if (mtab && (fstat(fd, &stb) == 0)) {
2779 while (entry = getmntent(mtab)) {
2780 if (stat(entry->mnt_dir, &fsb) == 0
2781 && fsb.st_dev == stb.st_dev)
2783 /* found the filesystem */
2785 if (hasmntopt(entry, MNTOPT_NOSUID))
2788 } /* A single fs may well fail its stat(). */
2793 # endif /* getmntent+hasmntopt */
2796 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2799 #endif /* IAMSUID */
2802 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2808 /* do we need to emulate setuid on scripts? */
2810 /* This code is for those BSD systems that have setuid #! scripts disabled
2811 * in the kernel because of a security problem. Merely defining DOSUID
2812 * in perl will not fix that problem, but if you have disabled setuid
2813 * scripts in the kernel, this will attempt to emulate setuid and setgid
2814 * on scripts that have those now-otherwise-useless bits set. The setuid
2815 * root version must be called suidperl or sperlN.NNN. If regular perl
2816 * discovers that it has opened a setuid script, it calls suidperl with
2817 * the same argv that it had. If suidperl finds that the script it has
2818 * just opened is NOT setuid root, it sets the effective uid back to the
2819 * uid. We don't just make perl setuid root because that loses the
2820 * effective uid we had before invoking perl, if it was different from the
2823 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2824 * be defined in suidperl only. suidperl must be setuid root. The
2825 * Configure script will set this up for you if you want it.
2832 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2833 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2834 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2839 #ifndef HAS_SETREUID
2840 /* On this access check to make sure the directories are readable,
2841 * there is actually a small window that the user could use to make
2842 * filename point to an accessible directory. So there is a faint
2843 * chance that someone could execute a setuid script down in a
2844 * non-accessible directory. I don't know what to do about that.
2845 * But I don't think it's too important. The manual lies when
2846 * it says access() is useful in setuid programs.
2848 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2849 Perl_croak(aTHX_ "Permission denied");
2851 /* If we can swap euid and uid, then we can determine access rights
2852 * with a simple stat of the file, and then compare device and
2853 * inode to make sure we did stat() on the same file we opened.
2854 * Then we just have to make sure he or she can execute it.
2857 struct stat tmpstatbuf;
2861 setreuid(PL_euid,PL_uid) < 0
2864 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2867 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2868 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2869 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2870 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2871 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2872 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2873 Perl_croak(aTHX_ "Permission denied");
2875 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2876 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2877 (void)PerlIO_close(PL_rsfp);
2878 Perl_croak(aTHX_ "Permission denied\n");
2882 setreuid(PL_uid,PL_euid) < 0
2884 # if defined(HAS_SETRESUID)
2885 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2888 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2889 Perl_croak(aTHX_ "Can't reswap uid and euid");
2890 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2891 Perl_croak(aTHX_ "Permission denied\n");
2893 #endif /* HAS_SETREUID */
2894 #endif /* IAMSUID */
2896 if (!S_ISREG(PL_statbuf.st_mode))
2897 Perl_croak(aTHX_ "Permission denied");
2898 if (PL_statbuf.st_mode & S_IWOTH)
2899 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2900 PL_doswitches = FALSE; /* -s is insecure in suid */
2901 CopLINE_inc(PL_curcop);
2902 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2903 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2904 Perl_croak(aTHX_ "No #! line");
2905 s = SvPV(PL_linestr,n_a)+2;
2907 while (!isSPACE(*s)) s++;
2908 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2909 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2910 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2911 Perl_croak(aTHX_ "Not a perl script");
2912 while (*s == ' ' || *s == '\t') s++;
2914 * #! arg must be what we saw above. They can invoke it by
2915 * mentioning suidperl explicitly, but they may not add any strange
2916 * arguments beyond what #! says if they do invoke suidperl that way.
2918 len = strlen(validarg);
2919 if (strEQ(validarg," PHOOEY ") ||
2920 strnNE(s,validarg,len) || !isSPACE(s[len]))
2921 Perl_croak(aTHX_ "Args must match #! line");
2924 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2925 PL_euid == PL_statbuf.st_uid)
2927 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2928 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2929 #endif /* IAMSUID */
2931 if (PL_euid) { /* oops, we're not the setuid root perl */
2932 (void)PerlIO_close(PL_rsfp);
2935 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2936 (int)PERL_REVISION, (int)PERL_VERSION,
2937 (int)PERL_SUBVERSION), PL_origargv);
2939 Perl_croak(aTHX_ "Can't do setuid\n");
2942 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2944 (void)setegid(PL_statbuf.st_gid);
2947 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2949 #ifdef HAS_SETRESGID
2950 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2952 PerlProc_setgid(PL_statbuf.st_gid);
2956 if (PerlProc_getegid() != PL_statbuf.st_gid)
2957 Perl_croak(aTHX_ "Can't do setegid!\n");
2959 if (PL_statbuf.st_mode & S_ISUID) {
2960 if (PL_statbuf.st_uid != PL_euid)
2962 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2965 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2967 #ifdef HAS_SETRESUID
2968 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2970 PerlProc_setuid(PL_statbuf.st_uid);
2974 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2975 Perl_croak(aTHX_ "Can't do seteuid!\n");
2977 else if (PL_uid) { /* oops, mustn't run as root */
2979 (void)seteuid((Uid_t)PL_uid);
2982 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2984 #ifdef HAS_SETRESUID
2985 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2987 PerlProc_setuid((Uid_t)PL_uid);
2991 if (PerlProc_geteuid() != PL_uid)
2992 Perl_croak(aTHX_ "Can't do seteuid!\n");
2995 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2996 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2999 else if (PL_preprocess)
3000 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
3001 else if (fdscript >= 0)
3002 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3004 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3006 /* We absolutely must clear out any saved ids here, so we */
3007 /* exec the real perl, substituting fd script for scriptname. */
3008 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3009 PerlIO_rewind(PL_rsfp);
3010 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3011 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3012 if (!PL_origargv[which])
3013 Perl_croak(aTHX_ "Permission denied");
3014 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3015 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3016 #if defined(HAS_FCNTL) && defined(F_SETFD)
3017 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3019 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3020 (int)PERL_REVISION, (int)PERL_VERSION,
3021 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3022 Perl_croak(aTHX_ "Can't do setuid\n");
3023 #endif /* IAMSUID */
3025 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3026 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3028 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3029 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3031 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3034 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3035 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3036 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3037 /* not set-id, must be wrapped */
3043 S_find_beginning(pTHX)
3045 register char *s, *s2;
3047 /* skip forward in input to the real script? */
3050 #ifdef MACOS_TRADITIONAL
3051 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3053 while (PL_doextract || gMacPerl_AlwaysExtract) {
3054 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3055 if (!gMacPerl_AlwaysExtract)
3056 Perl_croak(aTHX_ "No Perl script found in input\n");
3058 if (PL_doextract) /* require explicit override ? */
3059 if (!OverrideExtract(PL_origfilename))
3060 Perl_croak(aTHX_ "User aborted script\n");
3062 PL_doextract = FALSE;
3064 /* Pater peccavi, file does not have #! */
3065 PerlIO_rewind(PL_rsfp);
3070 while (PL_doextract) {
3071 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3072 Perl_croak(aTHX_ "No Perl script found in input\n");
3074 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3075 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3076 PL_doextract = FALSE;
3077 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3079 while (*s == ' ' || *s == '\t') s++;
3081 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3082 if (strnEQ(s2-4,"perl",4))
3084 while ((s = moreswitches(s)))
3095 PL_uid = PerlProc_getuid();
3096 PL_euid = PerlProc_geteuid();
3097 PL_gid = PerlProc_getgid();
3098 PL_egid = PerlProc_getegid();
3100 PL_uid |= PL_gid << 16;
3101 PL_euid |= PL_egid << 16;
3103 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3107 S_forbid_setid(pTHX_ char *s)
3109 if (PL_euid != PL_uid)
3110 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3111 if (PL_egid != PL_gid)
3112 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3116 Perl_init_debugger(pTHX)
3119 HV *ostash = PL_curstash;
3121 PL_curstash = PL_debstash;
3122 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3123 AvREAL_off(PL_dbargs);
3124 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3125 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3126 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3127 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3128 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3129 sv_setiv(PL_DBsingle, 0);
3130 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3131 sv_setiv(PL_DBtrace, 0);
3132 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3133 sv_setiv(PL_DBsignal, 0);
3134 PL_curstash = ostash;
3137 #ifndef STRESS_REALLOC
3138 #define REASONABLE(size) (size)
3140 #define REASONABLE(size) (1) /* unreasonable */
3144 Perl_init_stacks(pTHX)
3146 /* start with 128-item stack and 8K cxstack */
3147 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3148 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3149 PL_curstackinfo->si_type = PERLSI_MAIN;
3150 PL_curstack = PL_curstackinfo->si_stack;
3151 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3153 PL_stack_base = AvARRAY(PL_curstack);
3154 PL_stack_sp = PL_stack_base;
3155 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3157 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3160 PL_tmps_max = REASONABLE(128);
3162 New(54,PL_markstack,REASONABLE(32),I32);
3163 PL_markstack_ptr = PL_markstack;
3164 PL_markstack_max = PL_markstack + REASONABLE(32);
3168 New(54,PL_scopestack,REASONABLE(32),I32);
3169 PL_scopestack_ix = 0;
3170 PL_scopestack_max = REASONABLE(32);
3172 New(54,PL_savestack,REASONABLE(128),ANY);
3173 PL_savestack_ix = 0;
3174 PL_savestack_max = REASONABLE(128);
3176 New(54,PL_retstack,REASONABLE(16),OP*);
3178 PL_retstack_max = REASONABLE(16);
3187 while (PL_curstackinfo->si_next)
3188 PL_curstackinfo = PL_curstackinfo->si_next;
3189 while (PL_curstackinfo) {
3190 PERL_SI *p = PL_curstackinfo->si_prev;
3191 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3192 Safefree(PL_curstackinfo->si_cxstack);
3193 Safefree(PL_curstackinfo);
3194 PL_curstackinfo = p;
3196 Safefree(PL_tmps_stack);
3197 Safefree(PL_markstack);
3198 Safefree(PL_scopestack);
3199 Safefree(PL_savestack);
3200 Safefree(PL_retstack);
3204 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3215 lex_start(PL_linestr);
3217 PL_subname = newSVpvn("main",4);
3221 S_init_predump_symbols(pTHX)
3227 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3228 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3229 GvMULTI_on(PL_stdingv);
3230 io = GvIOp(PL_stdingv);
3231 IoIFP(io) = PerlIO_stdin();
3232 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3234 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3236 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3239 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3241 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3243 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3245 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3246 GvMULTI_on(PL_stderrgv);
3247 io = GvIOp(PL_stderrgv);
3248 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3249 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3251 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3253 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3256 Safefree(PL_osname);
3257 PL_osname = savepv(OSNAME);
3261 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3268 argc--,argv++; /* skip name of script */
3269 if (PL_doswitches) {
3270 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3273 if (argv[0][1] == '-' && !argv[0][2]) {
3277 if ((s = strchr(argv[0], '='))) {
3279 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3282 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3285 PL_toptarget = NEWSV(0,0);
3286 sv_upgrade(PL_toptarget, SVt_PVFM);
3287 sv_setpvn(PL_toptarget, "", 0);
3288 PL_bodytarget = NEWSV(0,0);
3289 sv_upgrade(PL_bodytarget, SVt_PVFM);
3290 sv_setpvn(PL_bodytarget, "", 0);
3291 PL_formtarget = PL_bodytarget;
3294 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3295 #ifdef MACOS_TRADITIONAL
3296 /* $0 is not majick on a Mac */
3297 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3299 sv_setpv(GvSV(tmpgv),PL_origfilename);
3300 magicname("0", "0", 1);
3303 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3305 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3307 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3309 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3310 GvMULTI_on(PL_argvgv);
3311 (void)gv_AVadd(PL_argvgv);
3312 av_clear(GvAVn(PL_argvgv));
3313 for (; argc > 0; argc--,argv++) {
3314 SV *sv = newSVpv(argv[0],0);
3315 av_push(GvAVn(PL_argvgv),sv);
3316 if (PL_widesyscalls)
3317 (void)sv_utf8_decode(sv);
3320 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3322 GvMULTI_on(PL_envgv);
3323 hv = GvHVn(PL_envgv);
3324 hv_magic(hv, PL_envgv, 'E');
3325 #ifdef USE_ENVIRON_ARRAY
3326 /* Note that if the supplied env parameter is actually a copy
3327 of the global environ then it may now point to free'd memory
3328 if the environment has been modified since. To avoid this
3329 problem we treat env==NULL as meaning 'use the default'
3334 environ[0] = Nullch;
3335 for (; *env; env++) {
3336 if (!(s = strchr(*env,'=')))
3342 sv = newSVpv(s--,0);
3343 (void)hv_store(hv, *env, s - *env, sv, 0);
3345 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3346 /* Sins of the RTL. See note in my_setenv(). */
3347 (void)PerlEnv_putenv(savepv(*env));
3351 #ifdef DYNAMIC_ENV_FETCH
3352 HvNAME(hv) = savepv(ENV_HV_NAME);
3356 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3357 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3361 S_init_perllib(pTHX)
3366 s = PerlEnv_getenv("PERL5LIB");
3368 incpush(s, TRUE, TRUE);
3370 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3372 /* Treat PERL5?LIB as a possible search list logical name -- the
3373 * "natural" VMS idiom for a Unix path string. We allow each
3374 * element to be a set of |-separated directories for compatibility.
3378 if (my_trnlnm("PERL5LIB",buf,0))
3379 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3381 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3385 /* Use the ~-expanded versions of APPLLIB (undocumented),
3386 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3389 incpush(APPLLIB_EXP, TRUE, TRUE);
3393 incpush(ARCHLIB_EXP, FALSE, FALSE);
3395 #ifdef MACOS_TRADITIONAL
3397 struct stat tmpstatbuf;
3398 SV * privdir = NEWSV(55, 0);
3399 char * macperl = PerlEnv_getenv("MACPERL");
3404 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3405 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3406 incpush(SvPVX(privdir), TRUE, FALSE);
3407 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3408 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3409 incpush(SvPVX(privdir), TRUE, FALSE);
3411 SvREFCNT_dec(privdir);
3414 incpush(":", FALSE, FALSE);
3417 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3420 incpush(PRIVLIB_EXP, TRUE, FALSE);
3422 incpush(PRIVLIB_EXP, FALSE, FALSE);
3426 /* sitearch is always relative to sitelib on Windows for
3427 * DLL-based path intuition to work correctly */
3428 # if !defined(WIN32)
3429 incpush(SITEARCH_EXP, FALSE, FALSE);
3435 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3437 incpush(SITELIB_EXP, FALSE, FALSE);
3441 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3442 incpush(SITELIB_STEM, FALSE, TRUE);
3445 #ifdef PERL_VENDORARCH_EXP
3446 /* vendorarch is always relative to vendorlib on Windows for
3447 * DLL-based path intuition to work correctly */
3448 # if !defined(WIN32)
3449 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3453 #ifdef PERL_VENDORLIB_EXP
3455 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3457 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3461 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3462 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3465 #ifdef PERL_OTHERLIBDIRS
3466 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3470 incpush(".", FALSE, FALSE);
3471 #endif /* MACOS_TRADITIONAL */
3474 #if defined(DOSISH) || defined(EPOC)
3475 # define PERLLIB_SEP ';'
3478 # define PERLLIB_SEP '|'
3480 # if defined(MACOS_TRADITIONAL)
3481 # define PERLLIB_SEP ','
3483 # define PERLLIB_SEP ':'
3487 #ifndef PERLLIB_MANGLE
3488 # define PERLLIB_MANGLE(s,n) (s)
3492 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3494 SV *subdir = Nullsv;
3499 if (addsubdirs || addoldvers) {
3500 subdir = sv_newmortal();
3503 /* Break at all separators */
3505 SV *libdir = NEWSV(55,0);
3508 /* skip any consecutive separators */
3509 while ( *p == PERLLIB_SEP ) {
3510 /* Uncomment the next line for PATH semantics */
3511 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3515 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3516 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3521 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3522 p = Nullch; /* break out */
3524 #ifdef MACOS_TRADITIONAL
3525 if (!strchr(SvPVX(libdir), ':'))
3526 sv_insert(libdir, 0, 0, ":", 1);
3527 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3528 sv_catpv(libdir, ":");
3532 * BEFORE pushing libdir onto @INC we may first push version- and
3533 * archname-specific sub-directories.
3535 if (addsubdirs || addoldvers) {
3536 #ifdef PERL_INC_VERSION_LIST
3537 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3538 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3539 const char **incver;
3541 struct stat tmpstatbuf;
3546 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3548 while (unix[len-1] == '/') len--; /* Cosmetic */
3549 sv_usepvn(libdir,unix,len);
3552 PerlIO_printf(Perl_error_log,
3553 "Failed to unixify @INC element \"%s\"\n",
3557 #ifdef MACOS_TRADITIONAL
3558 #define PERL_AV_SUFFIX_FMT ""
3559 #define PERL_ARCH_FMT ":%s"
3561 #define PERL_AV_SUFFIX_FMT "/"
3562 #define PERL_ARCH_FMT "/%s"
3564 /* .../version/archname if -d .../version/archname */
3565 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3567 (int)PERL_REVISION, (int)PERL_VERSION,
3568 (int)PERL_SUBVERSION, ARCHNAME);
3569 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3570 S_ISDIR(tmpstatbuf.st_mode))
3571 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3573 /* .../version if -d .../version */
3574 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3575 (int)PERL_REVISION, (int)PERL_VERSION,
3576 (int)PERL_SUBVERSION);
3577 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3578 S_ISDIR(tmpstatbuf.st_mode))
3579 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3581 /* .../archname if -d .../archname */
3582 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3583 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3584 S_ISDIR(tmpstatbuf.st_mode))
3585 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3588 #ifdef PERL_INC_VERSION_LIST
3590 for (incver = incverlist; *incver; incver++) {
3591 /* .../xxx if -d .../xxx */
3592 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3593 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3594 S_ISDIR(tmpstatbuf.st_mode))
3595 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3601 /* finally push this lib directory on the end of @INC */
3602 av_push(GvAVn(PL_incgv), libdir);
3607 STATIC struct perl_thread *
3608 S_init_main_thread(pTHX)
3610 #if !defined(PERL_IMPLICIT_CONTEXT)
3611 struct perl_thread *thr;
3615 Newz(53, thr, 1, struct perl_thread);
3616 PL_curcop = &PL_compiling;
3617 thr->interp = PERL_GET_INTERP;
3618 thr->cvcache = newHV();
3619 thr->threadsv = newAV();
3620 /* thr->threadsvp is set when find_threadsv is called */
3621 thr->specific = newAV();
3622 thr->flags = THRf_R_JOINABLE;
3623 MUTEX_INIT(&thr->mutex);
3624 /* Handcraft thrsv similarly to mess_sv */
3625 New(53, PL_thrsv, 1, SV);
3626 Newz(53, xpv, 1, XPV);
3627 SvFLAGS(PL_thrsv) = SVt_PV;
3628 SvANY(PL_thrsv) = (void*)xpv;
3629 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3630 SvPVX(PL_thrsv) = (char*)thr;
3631 SvCUR_set(PL_thrsv, sizeof(thr));
3632 SvLEN_set(PL_thrsv, sizeof(thr));
3633 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3634 thr->oursv = PL_thrsv;
3635 PL_chopset = " \n-";
3638 MUTEX_LOCK(&PL_threads_mutex);
3644 MUTEX_UNLOCK(&PL_threads_mutex);
3646 #ifdef HAVE_THREAD_INTERN
3647 Perl_init_thread_intern(thr);
3650 #ifdef SET_THREAD_SELF
3651 SET_THREAD_SELF(thr);
3653 thr->self = pthread_self();
3654 #endif /* SET_THREAD_SELF */
3658 * These must come after the SET_THR because sv_setpvn does
3659 * SvTAINT and the taint fields require dTHR.
3661 PL_toptarget = NEWSV(0,0);
3662 sv_upgrade(PL_toptarget, SVt_PVFM);
3663 sv_setpvn(PL_toptarget, "", 0);
3664 PL_bodytarget = NEWSV(0,0);
3665 sv_upgrade(PL_bodytarget, SVt_PVFM);
3666 sv_setpvn(PL_bodytarget, "", 0);
3667 PL_formtarget = PL_bodytarget;
3668 thr->errsv = newSVpvn("", 0);
3669 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3672 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3673 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3674 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3675 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3676 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3678 PL_reginterp_cnt = 0;
3682 #endif /* USE_THREADS */
3685 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3689 line_t oldline = CopLINE(PL_curcop);
3695 while (AvFILL(paramList) >= 0) {
3696 cv = (CV*)av_shift(paramList);
3697 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3698 /* save PL_beginav for compiler */
3699 if (! PL_beginav_save)
3700 PL_beginav_save = newAV();
3701 av_push(PL_beginav_save, (SV*)cv);
3705 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3706 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3712 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3716 (void)SvPV(atsv, len);
3719 PL_curcop = &PL_compiling;
3720 CopLINE_set(PL_curcop, oldline);
3721 if (paramList == PL_beginav)
3722 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3724 Perl_sv_catpvf(aTHX_ atsv,
3725 "%s failed--call queue aborted",
3726 paramList == PL_checkav ? "CHECK"
3727 : paramList == PL_initav ? "INIT"
3729 while (PL_scopestack_ix > oldscope)
3732 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3739 /* my_exit() was called */
3740 while (PL_scopestack_ix > oldscope)
3743 PL_curstash = PL_defstash;
3744 PL_curcop = &PL_compiling;
3745 CopLINE_set(PL_curcop, oldline);
3747 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3748 if (paramList == PL_beginav)
3749 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3751 Perl_croak(aTHX_ "%s failed--call queue aborted",
3752 paramList == PL_checkav ? "CHECK"
3753 : paramList == PL_initav ? "INIT"
3760 PL_curcop = &PL_compiling;
3761 CopLINE_set(PL_curcop, oldline);
3764 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3772 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3774 S_vcall_list_body(pTHX_ va_list args)
3776 CV *cv = va_arg(args, CV*);
3777 return call_list_body(cv);
3782 S_call_list_body(pTHX_ CV *cv)
3784 PUSHMARK(PL_stack_sp);
3785 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3790 Perl_my_exit(pTHX_ U32 status)
3794 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3795 thr, (unsigned long) status));
3804 STATUS_NATIVE_SET(status);
3811 Perl_my_failure_exit(pTHX)
3814 if (vaxc$errno & 1) {
3815 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3816 STATUS_NATIVE_SET(44);
3819 if (!vaxc$errno && errno) /* unlikely */
3820 STATUS_NATIVE_SET(44);
3822 STATUS_NATIVE_SET(vaxc$errno);
3827 STATUS_POSIX_SET(errno);
3829 exitstatus = STATUS_POSIX >> 8;
3830 if (exitstatus & 255)
3831 STATUS_POSIX_SET(exitstatus);
3833 STATUS_POSIX_SET(255);
3840 S_my_exit_jump(pTHX)
3843 register PERL_CONTEXT *cx;
3848 SvREFCNT_dec(PL_e_script);
3849 PL_e_script = Nullsv;
3852 POPSTACK_TO(PL_mainstack);
3853 if (cxstack_ix >= 0) {
3856 POPBLOCK(cx,PL_curpm);
3868 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3871 p = SvPVX(PL_e_script);
3872 nl = strchr(p, '\n');
3873 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3875 filter_del(read_e_script);
3878 sv_catpvn(buf_sv, p, nl-p);
3879 sv_chop(PL_e_script, nl);