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;
607 Safefree(CopFILE(&PL_compiling));
608 CopFILE(&PL_compiling) = Nullch;
609 Safefree(CopSTASHPV(&PL_compiling));
611 SvREFCNT_dec(CopFILEGV(&PL_compiling));
612 CopFILEGV(&PL_compiling) = Nullgv;
613 /* cop_stash is not refcounted */
616 /* Prepare to destruct main symbol table. */
621 SvREFCNT_dec(PL_curstname);
622 PL_curstname = Nullsv;
624 /* clear queued errors */
625 SvREFCNT_dec(PL_errors);
629 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
630 if (PL_scopestack_ix != 0)
631 Perl_warner(aTHX_ WARN_INTERNAL,
632 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
633 (long)PL_scopestack_ix);
634 if (PL_savestack_ix != 0)
635 Perl_warner(aTHX_ WARN_INTERNAL,
636 "Unbalanced saves: %ld more saves than restores\n",
637 (long)PL_savestack_ix);
638 if (PL_tmps_floor != -1)
639 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
640 (long)PL_tmps_floor + 1);
641 if (cxstack_ix != -1)
642 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
643 (long)cxstack_ix + 1);
646 /* Now absolutely destruct everything, somehow or other, loops or no. */
648 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
649 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
650 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
651 last_sv_count = PL_sv_count;
654 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
655 SvFLAGS(PL_fdpid) |= SVt_PVAV;
656 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
657 SvFLAGS(PL_strtab) |= SVt_PVHV;
659 AvREAL_off(PL_fdpid); /* no surviving entries */
660 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
663 #ifdef HAVE_INTERP_INTERN
667 /* Destruct the global string table. */
669 /* Yell and reset the HeVAL() slots that are still holding refcounts,
670 * so that sv_free() won't fail on them.
678 max = HvMAX(PL_strtab);
679 array = HvARRAY(PL_strtab);
682 if (hent && ckWARN_d(WARN_INTERNAL)) {
683 Perl_warner(aTHX_ WARN_INTERNAL,
684 "Unbalanced string table refcount: (%d) for \"%s\"",
685 HeVAL(hent) - Nullsv, HeKEY(hent));
686 HeVAL(hent) = Nullsv;
696 SvREFCNT_dec(PL_strtab);
698 /* free special SVs */
700 SvREFCNT(&PL_sv_yes) = 0;
701 sv_clear(&PL_sv_yes);
702 SvANY(&PL_sv_yes) = NULL;
703 SvFLAGS(&PL_sv_yes) = 0;
705 SvREFCNT(&PL_sv_no) = 0;
707 SvANY(&PL_sv_no) = NULL;
708 SvFLAGS(&PL_sv_no) = 0;
710 SvREFCNT(&PL_sv_undef) = 0;
711 SvREADONLY_off(&PL_sv_undef);
713 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
714 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
716 Safefree(PL_origfilename);
717 Safefree(PL_reg_start_tmp);
719 Safefree(PL_reg_curpm);
720 Safefree(PL_reg_poscache);
721 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
722 Safefree(PL_op_mask);
723 Safefree(PL_psig_ptr);
724 Safefree(PL_psig_name);
726 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
728 DEBUG_P(debprofdump());
730 MUTEX_DESTROY(&PL_strtab_mutex);
731 MUTEX_DESTROY(&PL_sv_mutex);
732 MUTEX_DESTROY(&PL_eval_mutex);
733 MUTEX_DESTROY(&PL_cred_mutex);
734 MUTEX_DESTROY(&PL_fdpid_mutex);
735 COND_DESTROY(&PL_eval_cond);
736 #ifdef EMULATE_ATOMIC_REFCOUNTS
737 MUTEX_DESTROY(&PL_svref_mutex);
738 #endif /* EMULATE_ATOMIC_REFCOUNTS */
740 /* As the penultimate thing, free the non-arena SV for thrsv */
741 Safefree(SvPVX(PL_thrsv));
742 Safefree(SvANY(PL_thrsv));
745 #endif /* USE_THREADS */
749 /* As the absolutely last thing, free the non-arena SV for mess() */
752 /* it could have accumulated taint magic */
753 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
756 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
757 moremagic = mg->mg_moremagic;
758 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
759 Safefree(mg->mg_ptr);
763 /* we know that type >= SVt_PV */
764 (void)SvOOK_off(PL_mess_sv);
765 Safefree(SvPVX(PL_mess_sv));
766 Safefree(SvANY(PL_mess_sv));
767 Safefree(PL_mess_sv);
773 =for apidoc perl_free
775 Releases a Perl interpreter. See L<perlembed>.
783 #if defined(PERL_OBJECT)
786 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
787 void *host = w32_internal_host;
789 win32_delete_internal_host(host);
797 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
799 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
800 PL_exitlist[PL_exitlistlen].fn = fn;
801 PL_exitlist[PL_exitlistlen].ptr = ptr;
806 =for apidoc perl_parse
808 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
814 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
824 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
827 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
828 setuid perl scripts securely.\n");
832 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
833 _dyld_lookup_and_bind
834 ("__environ", (unsigned long *) &environ_pointer, NULL);
839 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
840 PL_origenviron = environ;
845 /* Come here if running an undumped a.out. */
847 PL_origfilename = savepv(argv[0]);
848 PL_do_undump = FALSE;
849 cxstack_ix = -1; /* start label stack again */
851 init_postdump_symbols(argc,argv,env);
856 PL_curpad = AvARRAY(PL_comppad);
857 op_free(PL_main_root);
858 PL_main_root = Nullop;
860 PL_main_start = Nullop;
861 SvREFCNT_dec(PL_main_cv);
865 oldscope = PL_scopestack_ix;
866 PL_dowarn = G_WARN_OFF;
868 #ifdef PERL_FLEXIBLE_EXCEPTIONS
869 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
875 #ifndef PERL_FLEXIBLE_EXCEPTIONS
876 parse_body(env,xsinit);
879 call_list(oldscope, PL_checkav);
886 /* my_exit() was called */
887 while (PL_scopestack_ix > oldscope)
890 PL_curstash = PL_defstash;
892 call_list(oldscope, PL_checkav);
893 ret = STATUS_NATIVE_EXPORT;
896 PerlIO_printf(Perl_error_log, "panic: top_env\n");
904 #ifdef PERL_FLEXIBLE_EXCEPTIONS
906 S_vparse_body(pTHX_ va_list args)
908 char **env = va_arg(args, char**);
909 XSINIT_t xsinit = va_arg(args, XSINIT_t);
911 return parse_body(env, xsinit);
916 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
919 int argc = PL_origargc;
920 char **argv = PL_origargv;
921 char *scriptname = NULL;
923 VOL bool dosearch = FALSE;
928 char *cddir = Nullch;
930 sv_setpvn(PL_linestr,"",0);
931 sv = newSVpvn("",0); /* first used for -I flags */
935 for (argc--,argv++; argc > 0; argc--,argv++) {
936 if (argv[0][0] != '-' || !argv[0][1])
940 validarg = " PHOOEY ";
949 win32_argv2utf8(argc-1, argv+1);
952 #ifndef PERL_STRICT_CR
976 if ((s = moreswitches(s)))
986 #ifdef MACOS_TRADITIONAL
987 /* ignore -e for Dev:Pseudo argument */
988 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
991 if (PL_euid != PL_uid || PL_egid != PL_gid)
992 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
994 PL_e_script = newSVpvn("",0);
995 filter_add(read_e_script, NULL);
998 sv_catpv(PL_e_script, s);
1000 sv_catpv(PL_e_script, argv[1]);
1004 Perl_croak(aTHX_ "No code specified for -e");
1005 sv_catpv(PL_e_script, "\n");
1008 case 'I': /* -I handled both here and in moreswitches() */
1010 if (!*++s && (s=argv[1]) != Nullch) {
1015 STRLEN len = strlen(s);
1016 p = savepvn(s, len);
1017 incpush(p, TRUE, TRUE);
1018 sv_catpvn(sv, "-I", 2);
1019 sv_catpvn(sv, p, len);
1020 sv_catpvn(sv, " ", 1);
1024 Perl_croak(aTHX_ "No directory specified for -I");
1028 PL_preprocess = TRUE;
1038 PL_preambleav = newAV();
1039 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1041 PL_Sv = newSVpv("print myconfig();",0);
1043 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1045 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1047 sv_catpv(PL_Sv,"\" Compile-time options:");
1049 sv_catpv(PL_Sv," DEBUGGING");
1051 # ifdef MULTIPLICITY
1052 sv_catpv(PL_Sv," MULTIPLICITY");
1055 sv_catpv(PL_Sv," USE_THREADS");
1057 # ifdef USE_ITHREADS
1058 sv_catpv(PL_Sv," USE_ITHREADS");
1060 # ifdef USE_64_BIT_INT
1061 sv_catpv(PL_Sv," USE_64_BIT_INT");
1063 # ifdef USE_64_BIT_ALL
1064 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1066 # ifdef USE_LONG_DOUBLE
1067 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1069 # ifdef USE_LARGE_FILES
1070 sv_catpv(PL_Sv," USE_LARGE_FILES");
1073 sv_catpv(PL_Sv," USE_SOCKS");
1076 sv_catpv(PL_Sv," PERL_OBJECT");
1078 # ifdef PERL_IMPLICIT_CONTEXT
1079 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1081 # ifdef PERL_IMPLICIT_SYS
1082 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1084 sv_catpv(PL_Sv,"\\n\",");
1086 #if defined(LOCAL_PATCH_COUNT)
1087 if (LOCAL_PATCH_COUNT > 0) {
1089 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1090 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1091 if (PL_localpatches[i])
1092 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1096 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1099 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1101 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1104 sv_catpv(PL_Sv, "; \
1106 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1107 print \" \\%ENV:\\n @env\\n\" if @env; \
1108 print \" \\@INC:\\n @INC\\n\";");
1111 PL_Sv = newSVpv("config_vars(qw(",0);
1112 sv_catpv(PL_Sv, ++s);
1113 sv_catpv(PL_Sv, "))");
1116 av_push(PL_preambleav, PL_Sv);
1117 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1120 PL_doextract = TRUE;
1128 if (!*++s || isSPACE(*s)) {
1132 /* catch use of gnu style long options */
1133 if (strEQ(s, "version")) {
1137 if (strEQ(s, "help")) {
1144 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1150 #ifndef SECURE_INTERNAL_GETENV
1153 (s = PerlEnv_getenv("PERL5OPT")))
1157 if (*s == '-' && *(s+1) == 'T')
1170 if (!strchr("DIMUdmw", *s))
1171 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1172 s = moreswitches(s);
1178 scriptname = argv[0];
1181 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1183 else if (scriptname == Nullch) {
1185 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1193 open_script(scriptname,dosearch,sv,&fdscript);
1195 validate_suid(validarg, scriptname,fdscript);
1198 #if defined(SIGCHLD) || defined(SIGCLD)
1201 # define SIGCHLD SIGCLD
1203 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1204 if (sigstate == SIG_IGN) {
1205 if (ckWARN(WARN_SIGNAL))
1206 Perl_warner(aTHX_ WARN_SIGNAL,
1207 "Can't ignore signal CHLD, forcing to default");
1208 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1214 #ifdef MACOS_TRADITIONAL
1215 if (PL_doextract || gMacPerl_AlwaysExtract) {
1220 if (cddir && PerlDir_chdir(cddir) < 0)
1221 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1225 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1226 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1227 CvUNIQUE_on(PL_compcv);
1229 PL_comppad = newAV();
1230 av_push(PL_comppad, Nullsv);
1231 PL_curpad = AvARRAY(PL_comppad);
1232 PL_comppad_name = newAV();
1233 PL_comppad_name_fill = 0;
1234 PL_min_intro_pending = 0;
1237 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1238 PL_curpad[0] = (SV*)newAV();
1239 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1240 CvOWNER(PL_compcv) = 0;
1241 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1242 MUTEX_INIT(CvMUTEXP(PL_compcv));
1243 #endif /* USE_THREADS */
1245 comppadlist = newAV();
1246 AvREAL_off(comppadlist);
1247 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1248 av_store(comppadlist, 1, (SV*)PL_comppad);
1249 CvPADLIST(PL_compcv) = comppadlist;
1251 boot_core_UNIVERSAL();
1253 boot_core_xsutils();
1257 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1259 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
1265 # ifdef HAS_SOCKS5_INIT
1266 socks5_init(argv[0]);
1272 init_predump_symbols();
1273 /* init_postdump_symbols not currently designed to be called */
1274 /* more than once (ENV isn't cleared first, for example) */
1275 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1277 init_postdump_symbols(argc,argv,env);
1281 /* now parse the script */
1283 SETERRNO(0,SS$_NORMAL);
1285 #ifdef MACOS_TRADITIONAL
1286 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1288 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1290 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1291 MacPerl_MPWFileName(PL_origfilename));
1295 if (yyparse() || PL_error_count) {
1297 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1299 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1304 CopLINE_set(PL_curcop, 0);
1305 PL_curstash = PL_defstash;
1306 PL_preprocess = FALSE;
1308 SvREFCNT_dec(PL_e_script);
1309 PL_e_script = Nullsv;
1312 /* now that script is parsed, we can modify record separator */
1313 SvREFCNT_dec(PL_rs);
1314 PL_rs = SvREFCNT_inc(PL_nrs);
1315 sv_setsv(get_sv("/", TRUE), PL_rs);
1320 SAVECOPFILE(PL_curcop);
1321 SAVECOPLINE(PL_curcop);
1322 gv_check(PL_defstash);
1329 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1330 dump_mstats("after compilation:");
1339 =for apidoc perl_run
1341 Tells a Perl interpreter to run. See L<perlembed>.
1357 oldscope = PL_scopestack_ix;
1359 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1361 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1367 cxstack_ix = -1; /* start context stack again */
1369 case 0: /* normal completion */
1370 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1375 case 2: /* my_exit() */
1376 while (PL_scopestack_ix > oldscope)
1379 PL_curstash = PL_defstash;
1380 if (PL_endav && !PL_minus_c)
1381 call_list(oldscope, PL_endav);
1383 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1384 dump_mstats("after execution: ");
1386 ret = STATUS_NATIVE_EXPORT;
1390 POPSTACK_TO(PL_mainstack);
1393 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1403 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1405 S_vrun_body(pTHX_ va_list args)
1407 I32 oldscope = va_arg(args, I32);
1409 return run_body(oldscope);
1415 S_run_body(pTHX_ I32 oldscope)
1419 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1420 PL_sawampersand ? "Enabling" : "Omitting"));
1422 if (!PL_restartop) {
1423 DEBUG_x(dump_all());
1424 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1425 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1429 #ifdef MACOS_TRADITIONAL
1430 PerlIO_printf(Perl_error_log, "%s syntax OK\n", MacPerl_MPWFileName(PL_origfilename));
1432 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1436 if (PERLDB_SINGLE && PL_DBsingle)
1437 sv_setiv(PL_DBsingle, 1);
1439 call_list(oldscope, PL_initav);
1445 PL_op = PL_restartop;
1449 else if (PL_main_start) {
1450 CvDEPTH(PL_main_cv) = 1;
1451 PL_op = PL_main_start;
1461 =for apidoc p||get_sv
1463 Returns the SV of the specified Perl scalar. If C<create> is set and the
1464 Perl variable does not exist then it will be created. If C<create> is not
1465 set and the variable does not exist then NULL is returned.
1471 Perl_get_sv(pTHX_ const char *name, I32 create)
1475 if (name[1] == '\0' && !isALPHA(name[0])) {
1476 PADOFFSET tmp = find_threadsv(name);
1477 if (tmp != NOT_IN_PAD) {
1479 return THREADSV(tmp);
1482 #endif /* USE_THREADS */
1483 gv = gv_fetchpv(name, create, SVt_PV);
1490 =for apidoc p||get_av
1492 Returns the AV of the specified Perl array. If C<create> is set and the
1493 Perl variable does not exist then it will be created. If C<create> is not
1494 set and the variable does not exist then NULL is returned.
1500 Perl_get_av(pTHX_ const char *name, I32 create)
1502 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1511 =for apidoc p||get_hv
1513 Returns the HV of the specified Perl hash. If C<create> is set and the
1514 Perl variable does not exist then it will be created. If C<create> is not
1515 set and the variable does not exist then NULL is returned.
1521 Perl_get_hv(pTHX_ const char *name, I32 create)
1523 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1532 =for apidoc p||get_cv
1534 Returns the CV of the specified Perl subroutine. If C<create> is set and
1535 the Perl subroutine does not exist then it will be declared (which has the
1536 same effect as saying C<sub name;>). If C<create> is not set and the
1537 subroutine does not exist then NULL is returned.
1543 Perl_get_cv(pTHX_ const char *name, I32 create)
1545 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1546 /* XXX unsafe for threads if eval_owner isn't held */
1547 /* XXX this is probably not what they think they're getting.
1548 * It has the same effect as "sub name;", i.e. just a forward
1550 if (create && !GvCVu(gv))
1551 return newSUB(start_subparse(FALSE, 0),
1552 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1560 /* Be sure to refetch the stack pointer after calling these routines. */
1563 =for apidoc p||call_argv
1565 Performs a callback to the specified Perl sub. See L<perlcall>.
1571 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1573 /* See G_* flags in cop.h */
1574 /* null terminated arg list */
1581 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1586 return call_pv(sub_name, flags);
1590 =for apidoc p||call_pv
1592 Performs a callback to the specified Perl sub. See L<perlcall>.
1598 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1599 /* name of the subroutine */
1600 /* See G_* flags in cop.h */
1602 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1606 =for apidoc p||call_method
1608 Performs a callback to the specified Perl method. The blessed object must
1609 be on the stack. See L<perlcall>.
1615 Perl_call_method(pTHX_ const char *methname, I32 flags)
1616 /* name of the subroutine */
1617 /* See G_* flags in cop.h */
1619 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1622 /* May be called with any of a CV, a GV, or an SV containing the name. */
1624 =for apidoc p||call_sv
1626 Performs a callback to the Perl sub whose name is in the SV. See
1633 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1634 /* See G_* flags in cop.h */
1637 LOGOP myop; /* fake syntax tree node */
1642 bool oldcatch = CATCH_GET;
1647 if (flags & G_DISCARD) {
1652 Zero(&myop, 1, LOGOP);
1653 myop.op_next = Nullop;
1654 if (!(flags & G_NOARGS))
1655 myop.op_flags |= OPf_STACKED;
1656 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1657 (flags & G_ARRAY) ? OPf_WANT_LIST :
1662 EXTEND(PL_stack_sp, 1);
1663 *++PL_stack_sp = sv;
1665 oldscope = PL_scopestack_ix;
1667 if (PERLDB_SUB && PL_curstash != PL_debstash
1668 /* Handle first BEGIN of -d. */
1669 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1670 /* Try harder, since this may have been a sighandler, thus
1671 * curstash may be meaningless. */
1672 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1673 && !(flags & G_NODEBUG))
1674 PL_op->op_private |= OPpENTERSUB_DB;
1676 if (flags & G_METHOD) {
1677 Zero(&method_op, 1, UNOP);
1678 method_op.op_next = PL_op;
1679 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1680 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1681 PL_op = (OP*)&method_op;
1684 if (!(flags & G_EVAL)) {
1686 call_body((OP*)&myop, FALSE);
1687 retval = PL_stack_sp - (PL_stack_base + oldmark);
1688 CATCH_SET(oldcatch);
1691 myop.op_other = (OP*)&myop;
1693 /* we're trying to emulate pp_entertry() here */
1695 register PERL_CONTEXT *cx;
1696 I32 gimme = GIMME_V;
1701 push_return(Nullop);
1702 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1704 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1706 PL_in_eval = EVAL_INEVAL;
1707 if (flags & G_KEEPERR)
1708 PL_in_eval |= EVAL_KEEPERR;
1714 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1716 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1723 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1725 call_body((OP*)&myop, FALSE);
1727 retval = PL_stack_sp - (PL_stack_base + oldmark);
1728 if (!(flags & G_KEEPERR))
1735 /* my_exit() was called */
1736 PL_curstash = PL_defstash;
1739 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1740 Perl_croak(aTHX_ "Callback called exit");
1745 PL_op = PL_restartop;
1749 PL_stack_sp = PL_stack_base + oldmark;
1750 if (flags & G_ARRAY)
1754 *++PL_stack_sp = &PL_sv_undef;
1759 if (PL_scopestack_ix > oldscope) {
1763 register PERL_CONTEXT *cx;
1775 if (flags & G_DISCARD) {
1776 PL_stack_sp = PL_stack_base + oldmark;
1785 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1787 S_vcall_body(pTHX_ va_list args)
1789 OP *myop = va_arg(args, OP*);
1790 int is_eval = va_arg(args, int);
1792 call_body(myop, is_eval);
1798 S_call_body(pTHX_ OP *myop, int is_eval)
1802 if (PL_op == myop) {
1804 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
1806 PL_op = Perl_pp_entersub(aTHX); /* this does */
1812 /* Eval a string. The G_EVAL flag is always assumed. */
1815 =for apidoc p||eval_sv
1817 Tells Perl to C<eval> the string in the SV.
1823 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1825 /* See G_* flags in cop.h */
1828 UNOP myop; /* fake syntax tree node */
1829 I32 oldmark = SP - PL_stack_base;
1836 if (flags & G_DISCARD) {
1843 Zero(PL_op, 1, UNOP);
1844 EXTEND(PL_stack_sp, 1);
1845 *++PL_stack_sp = sv;
1846 oldscope = PL_scopestack_ix;
1848 if (!(flags & G_NOARGS))
1849 myop.op_flags = OPf_STACKED;
1850 myop.op_next = Nullop;
1851 myop.op_type = OP_ENTEREVAL;
1852 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1853 (flags & G_ARRAY) ? OPf_WANT_LIST :
1855 if (flags & G_KEEPERR)
1856 myop.op_flags |= OPf_SPECIAL;
1858 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1860 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1867 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1869 call_body((OP*)&myop,TRUE);
1871 retval = PL_stack_sp - (PL_stack_base + oldmark);
1872 if (!(flags & G_KEEPERR))
1879 /* my_exit() was called */
1880 PL_curstash = PL_defstash;
1883 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1884 Perl_croak(aTHX_ "Callback called exit");
1889 PL_op = PL_restartop;
1893 PL_stack_sp = PL_stack_base + oldmark;
1894 if (flags & G_ARRAY)
1898 *++PL_stack_sp = &PL_sv_undef;
1904 if (flags & G_DISCARD) {
1905 PL_stack_sp = PL_stack_base + oldmark;
1915 =for apidoc p||eval_pv
1917 Tells Perl to C<eval> the given string and return an SV* result.
1923 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1926 SV* sv = newSVpv(p, 0);
1928 eval_sv(sv, G_SCALAR);
1935 if (croak_on_error && SvTRUE(ERRSV)) {
1937 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1943 /* Require a module. */
1946 =for apidoc p||require_pv
1948 Tells Perl to C<require> a module.
1954 Perl_require_pv(pTHX_ const char *pv)
1958 PUSHSTACKi(PERLSI_REQUIRE);
1960 sv = sv_newmortal();
1961 sv_setpv(sv, "require '");
1964 eval_sv(sv, G_DISCARD);
1970 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1974 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1975 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1979 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1981 /* This message really ought to be max 23 lines.
1982 * Removed -h because the user already knows that opton. Others? */
1984 static char *usage_msg[] = {
1985 "-0[octal] specify record separator (\\0, if no argument)",
1986 "-a autosplit mode with -n or -p (splits $_ into @F)",
1987 "-C enable native wide character system interfaces",
1988 "-c check syntax only (runs BEGIN and CHECK blocks)",
1989 "-d[:debugger] run program under debugger",
1990 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1991 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1992 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1993 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1994 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1995 "-l[octal] enable line ending processing, specifies line terminator",
1996 "-[mM][-]module execute `use/no module...' before executing program",
1997 "-n assume 'while (<>) { ... }' loop around program",
1998 "-p assume loop like -n but print line also, like sed",
1999 "-P run program through C preprocessor before compilation",
2000 "-s enable rudimentary parsing for switches after programfile",
2001 "-S look for programfile using PATH environment variable",
2002 "-T enable tainting checks",
2003 "-u dump core after parsing program",
2004 "-U allow unsafe operations",
2005 "-v print version, subversion (includes VERY IMPORTANT perl info)",
2006 "-V[:variable] print configuration summary (or a single Config.pm variable)",
2007 "-w enable many useful warnings (RECOMMENDED)",
2008 "-W enable all warnings",
2009 "-X disable all warnings",
2010 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
2014 char **p = usage_msg;
2016 PerlIO_printf(PerlIO_stdout(),
2017 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2020 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
2023 /* This routine handles any switches that can be given during run */
2026 Perl_moreswitches(pTHX_ char *s)
2035 numlen = 0; /* disallow underscores */
2036 rschar = (U32)scan_oct(s, 4, &numlen);
2037 SvREFCNT_dec(PL_nrs);
2038 if (rschar & ~((U8)~0))
2039 PL_nrs = &PL_sv_undef;
2040 else if (!rschar && numlen >= 2)
2041 PL_nrs = newSVpvn("", 0);
2044 PL_nrs = newSVpvn(&ch, 1);
2049 PL_widesyscalls = TRUE;
2054 PL_splitstr = savepv(s + 1);
2068 /* The following permits -d:Mod to accepts arguments following an =
2069 in the fashion that -MSome::Mod does. */
2070 if (*s == ':' || *s == '=') {
2073 sv = newSVpv("use Devel::", 0);
2075 /* We now allow -d:Module=Foo,Bar */
2076 while(isALNUM(*s) || *s==':') ++s;
2078 sv_catpv(sv, start);
2080 sv_catpvn(sv, start, s-start);
2081 sv_catpv(sv, " split(/,/,q{");
2086 my_setenv("PERL5DB", SvPV(sv, PL_na));
2089 PL_perldb = PERLDB_ALL;
2097 if (isALPHA(s[1])) {
2098 static char debopts[] = "psltocPmfrxuLHXDS";
2101 for (s++; *s && (d = strchr(debopts,*s)); s++)
2102 PL_debug |= 1 << (d - debopts);
2105 PL_debug = atoi(s+1);
2106 for (s++; isDIGIT(*s); s++) ;
2108 PL_debug |= 0x80000000;
2111 if (ckWARN_d(WARN_DEBUGGING))
2112 Perl_warner(aTHX_ WARN_DEBUGGING,
2113 "Recompile perl with -DDEBUGGING to use -D switch\n");
2114 for (s++; isALNUM(*s); s++) ;
2120 usage(PL_origargv[0]);
2124 Safefree(PL_inplace);
2125 PL_inplace = savepv(s+1);
2127 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2130 if (*s == '-') /* Additional switches on #! line. */
2134 case 'I': /* -I handled both here and in parse_perl() */
2137 while (*s && isSPACE(*s))
2142 /* ignore trailing spaces (possibly followed by other switches) */
2144 for (e = p; *e && !isSPACE(*e); e++) ;
2148 } while (*p && *p != '-');
2149 e = savepvn(s, e-s);
2150 incpush(e, TRUE, TRUE);
2157 Perl_croak(aTHX_ "No directory specified for -I");
2165 PL_ors = savepv("\n");
2167 numlen = 0; /* disallow underscores */
2168 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2173 if (RsPARA(PL_nrs)) {
2178 PL_ors = SvPV(PL_nrs, PL_orslen);
2179 PL_ors = savepvn(PL_ors, PL_orslen);
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 1987-2000, 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)
2490 /* Note that strtab is a rather special HV. Assumptions are made
2491 about not iterating on it, and not adding tie magic to it.
2492 It is properly deallocated in perl_destruct() */
2493 PL_strtab = newHV();
2495 MUTEX_INIT(&PL_strtab_mutex);
2497 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2498 hv_ksplit(PL_strtab, 512);
2500 PL_curstash = PL_defstash = newHV();
2501 PL_curstname = newSVpvn("main",4);
2502 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2503 SvREFCNT_dec(GvHV(gv));
2504 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2506 HvNAME(PL_defstash) = savepv("main");
2507 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2508 GvMULTI_on(PL_incgv);
2509 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2510 GvMULTI_on(PL_hintgv);
2511 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2512 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2513 GvMULTI_on(PL_errgv);
2514 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2515 GvMULTI_on(PL_replgv);
2516 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2517 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2518 sv_setpvn(ERRSV, "", 0);
2519 PL_curstash = PL_defstash;
2520 CopSTASH_set(&PL_compiling, PL_defstash);
2521 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2522 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2523 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2524 /* We must init $/ before switches are processed. */
2525 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2529 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2536 PL_origfilename = savepv("-e");
2539 /* if find_script() returns, it returns a malloc()-ed value */
2540 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2542 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2543 char *s = scriptname + 8;
2544 *fdscript = atoi(s);
2548 scriptname = savepv(s + 1);
2549 Safefree(PL_origfilename);
2550 PL_origfilename = scriptname;
2556 Safefree(CopFILE(PL_curcop));
2558 SvREFCNT_dec(CopFILEGV(PL_curcop));
2560 CopFILE_set(PL_curcop, PL_origfilename);
2561 if (strEQ(PL_origfilename,"-"))
2563 if (*fdscript >= 0) {
2564 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2565 #if defined(HAS_FCNTL) && defined(F_SETFD)
2567 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2570 else if (PL_preprocess) {
2571 char *cpp_cfg = CPPSTDIN;
2572 SV *cpp = newSVpvn("",0);
2573 SV *cmd = NEWSV(0,0);
2575 if (strEQ(cpp_cfg, "cppstdin"))
2576 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2577 sv_catpv(cpp, cpp_cfg);
2579 sv_catpvn(sv, "-I", 2);
2580 sv_catpv(sv,PRIVLIB_EXP);
2582 #if defined(MSDOS) || defined(WIN32)
2583 Perl_sv_setpvf(aTHX_ cmd, "\
2584 sed %s -e \"/^[^#]/b\" \
2585 -e \"/^#[ ]*include[ ]/b\" \
2586 -e \"/^#[ ]*define[ ]/b\" \
2587 -e \"/^#[ ]*if[ ]/b\" \
2588 -e \"/^#[ ]*ifdef[ ]/b\" \
2589 -e \"/^#[ ]*ifndef[ ]/b\" \
2590 -e \"/^#[ ]*else/b\" \
2591 -e \"/^#[ ]*elif[ ]/b\" \
2592 -e \"/^#[ ]*undef[ ]/b\" \
2593 -e \"/^#[ ]*endif/b\" \
2595 %s | %"SVf" -C %"SVf" %s",
2596 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2599 Perl_sv_setpvf(aTHX_ cmd, "\
2600 %s %s -e '/^[^#]/b' \
2601 -e '/^#[ ]*include[ ]/b' \
2602 -e '/^#[ ]*define[ ]/b' \
2603 -e '/^#[ ]*if[ ]/b' \
2604 -e '/^#[ ]*ifdef[ ]/b' \
2605 -e '/^#[ ]*ifndef[ ]/b' \
2606 -e '/^#[ ]*else/b' \
2607 -e '/^#[ ]*elif[ ]/b' \
2608 -e '/^#[ ]*undef[ ]/b' \
2609 -e '/^#[ ]*endif/b' \
2611 %s | %"SVf" %"SVf" %s",
2613 Perl_sv_setpvf(aTHX_ cmd, "\
2614 %s %s -e '/^[^#]/b' \
2615 -e '/^#[ ]*include[ ]/b' \
2616 -e '/^#[ ]*define[ ]/b' \
2617 -e '/^#[ ]*if[ ]/b' \
2618 -e '/^#[ ]*ifdef[ ]/b' \
2619 -e '/^#[ ]*ifndef[ ]/b' \
2620 -e '/^#[ ]*else/b' \
2621 -e '/^#[ ]*elif[ ]/b' \
2622 -e '/^#[ ]*undef[ ]/b' \
2623 -e '/^#[ ]*endif/b' \
2625 %s | %"SVf" -C %"SVf" %s",
2632 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2634 scriptname, cpp, sv, CPPMINUS);
2635 PL_doextract = FALSE;
2636 #ifdef IAMSUID /* actually, this is caught earlier */
2637 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2639 (void)seteuid(PL_uid); /* musn't stay setuid root */
2642 (void)setreuid((Uid_t)-1, PL_uid);
2644 #ifdef HAS_SETRESUID
2645 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2647 PerlProc_setuid(PL_uid);
2651 if (PerlProc_geteuid() != PL_uid)
2652 Perl_croak(aTHX_ "Can't do seteuid!\n");
2654 #endif /* IAMSUID */
2655 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2659 else if (!*scriptname) {
2660 forbid_setid("program input from stdin");
2661 PL_rsfp = PerlIO_stdin();
2664 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2665 #if defined(HAS_FCNTL) && defined(F_SETFD)
2667 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2672 #ifndef IAMSUID /* in case script is not readable before setuid */
2674 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2675 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2678 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2679 (int)PERL_REVISION, (int)PERL_VERSION,
2680 (int)PERL_SUBVERSION), PL_origargv);
2681 Perl_croak(aTHX_ "Can't do setuid\n");
2685 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2686 CopFILE(PL_curcop), Strerror(errno));
2691 * I_SYSSTATVFS HAS_FSTATVFS
2693 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2694 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2695 * here so that metaconfig picks them up. */
2699 S_fd_on_nosuid_fs(pTHX_ int fd)
2701 int check_okay = 0; /* able to do all the required sys/libcalls */
2702 int on_nosuid = 0; /* the fd is on a nosuid fs */
2704 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2705 * fstatvfs() is UNIX98.
2706 * fstatfs() is 4.3 BSD.
2707 * ustat()+getmnt() is pre-4.3 BSD.
2708 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2709 * an irrelevant filesystem while trying to reach the right one.
2712 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2714 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2715 defined(HAS_FSTATVFS)
2716 # define FD_ON_NOSUID_CHECK_OKAY
2717 struct statvfs stfs;
2719 check_okay = fstatvfs(fd, &stfs) == 0;
2720 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2721 # endif /* fstatvfs */
2723 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2724 defined(PERL_MOUNT_NOSUID) && \
2725 defined(HAS_FSTATFS) && \
2726 defined(HAS_STRUCT_STATFS) && \
2727 defined(HAS_STRUCT_STATFS_F_FLAGS)
2728 # define FD_ON_NOSUID_CHECK_OKAY
2731 check_okay = fstatfs(fd, &stfs) == 0;
2732 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2733 # endif /* fstatfs */
2735 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2736 defined(PERL_MOUNT_NOSUID) && \
2737 defined(HAS_FSTAT) && \
2738 defined(HAS_USTAT) && \
2739 defined(HAS_GETMNT) && \
2740 defined(HAS_STRUCT_FS_DATA) && \
2742 # define FD_ON_NOSUID_CHECK_OKAY
2745 if (fstat(fd, &fdst) == 0) {
2747 if (ustat(fdst.st_dev, &us) == 0) {
2749 /* NOSTAT_ONE here because we're not examining fields which
2750 * vary between that case and STAT_ONE. */
2751 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2752 size_t cmplen = sizeof(us.f_fname);
2753 if (sizeof(fsd.fd_req.path) < cmplen)
2754 cmplen = sizeof(fsd.fd_req.path);
2755 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2756 fdst.st_dev == fsd.fd_req.dev) {
2758 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2764 # endif /* fstat+ustat+getmnt */
2766 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2767 defined(HAS_GETMNTENT) && \
2768 defined(HAS_HASMNTOPT) && \
2769 defined(MNTOPT_NOSUID)
2770 # define FD_ON_NOSUID_CHECK_OKAY
2771 FILE *mtab = fopen("/etc/mtab", "r");
2772 struct mntent *entry;
2773 struct stat stb, fsb;
2775 if (mtab && (fstat(fd, &stb) == 0)) {
2776 while (entry = getmntent(mtab)) {
2777 if (stat(entry->mnt_dir, &fsb) == 0
2778 && fsb.st_dev == stb.st_dev)
2780 /* found the filesystem */
2782 if (hasmntopt(entry, MNTOPT_NOSUID))
2785 } /* A single fs may well fail its stat(). */
2790 # endif /* getmntent+hasmntopt */
2793 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2796 #endif /* IAMSUID */
2799 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2805 /* do we need to emulate setuid on scripts? */
2807 /* This code is for those BSD systems that have setuid #! scripts disabled
2808 * in the kernel because of a security problem. Merely defining DOSUID
2809 * in perl will not fix that problem, but if you have disabled setuid
2810 * scripts in the kernel, this will attempt to emulate setuid and setgid
2811 * on scripts that have those now-otherwise-useless bits set. The setuid
2812 * root version must be called suidperl or sperlN.NNN. If regular perl
2813 * discovers that it has opened a setuid script, it calls suidperl with
2814 * the same argv that it had. If suidperl finds that the script it has
2815 * just opened is NOT setuid root, it sets the effective uid back to the
2816 * uid. We don't just make perl setuid root because that loses the
2817 * effective uid we had before invoking perl, if it was different from the
2820 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2821 * be defined in suidperl only. suidperl must be setuid root. The
2822 * Configure script will set this up for you if you want it.
2829 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2830 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2831 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2836 #ifndef HAS_SETREUID
2837 /* On this access check to make sure the directories are readable,
2838 * there is actually a small window that the user could use to make
2839 * filename point to an accessible directory. So there is a faint
2840 * chance that someone could execute a setuid script down in a
2841 * non-accessible directory. I don't know what to do about that.
2842 * But I don't think it's too important. The manual lies when
2843 * it says access() is useful in setuid programs.
2845 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2846 Perl_croak(aTHX_ "Permission denied");
2848 /* If we can swap euid and uid, then we can determine access rights
2849 * with a simple stat of the file, and then compare device and
2850 * inode to make sure we did stat() on the same file we opened.
2851 * Then we just have to make sure he or she can execute it.
2854 struct stat tmpstatbuf;
2858 setreuid(PL_euid,PL_uid) < 0
2861 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2864 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2865 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2866 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2867 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2868 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2869 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2870 Perl_croak(aTHX_ "Permission denied");
2872 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2873 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2874 (void)PerlIO_close(PL_rsfp);
2875 Perl_croak(aTHX_ "Permission denied\n");
2879 setreuid(PL_uid,PL_euid) < 0
2881 # if defined(HAS_SETRESUID)
2882 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2885 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2886 Perl_croak(aTHX_ "Can't reswap uid and euid");
2887 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2888 Perl_croak(aTHX_ "Permission denied\n");
2890 #endif /* HAS_SETREUID */
2891 #endif /* IAMSUID */
2893 if (!S_ISREG(PL_statbuf.st_mode))
2894 Perl_croak(aTHX_ "Permission denied");
2895 if (PL_statbuf.st_mode & S_IWOTH)
2896 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2897 PL_doswitches = FALSE; /* -s is insecure in suid */
2898 CopLINE_inc(PL_curcop);
2899 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2900 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2901 Perl_croak(aTHX_ "No #! line");
2902 s = SvPV(PL_linestr,n_a)+2;
2904 while (!isSPACE(*s)) s++;
2905 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2906 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2907 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2908 Perl_croak(aTHX_ "Not a perl script");
2909 while (*s == ' ' || *s == '\t') s++;
2911 * #! arg must be what we saw above. They can invoke it by
2912 * mentioning suidperl explicitly, but they may not add any strange
2913 * arguments beyond what #! says if they do invoke suidperl that way.
2915 len = strlen(validarg);
2916 if (strEQ(validarg," PHOOEY ") ||
2917 strnNE(s,validarg,len) || !isSPACE(s[len]))
2918 Perl_croak(aTHX_ "Args must match #! line");
2921 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2922 PL_euid == PL_statbuf.st_uid)
2924 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2925 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2926 #endif /* IAMSUID */
2928 if (PL_euid) { /* oops, we're not the setuid root perl */
2929 (void)PerlIO_close(PL_rsfp);
2932 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2933 (int)PERL_REVISION, (int)PERL_VERSION,
2934 (int)PERL_SUBVERSION), PL_origargv);
2936 Perl_croak(aTHX_ "Can't do setuid\n");
2939 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2941 (void)setegid(PL_statbuf.st_gid);
2944 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2946 #ifdef HAS_SETRESGID
2947 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2949 PerlProc_setgid(PL_statbuf.st_gid);
2953 if (PerlProc_getegid() != PL_statbuf.st_gid)
2954 Perl_croak(aTHX_ "Can't do setegid!\n");
2956 if (PL_statbuf.st_mode & S_ISUID) {
2957 if (PL_statbuf.st_uid != PL_euid)
2959 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2962 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2964 #ifdef HAS_SETRESUID
2965 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2967 PerlProc_setuid(PL_statbuf.st_uid);
2971 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2972 Perl_croak(aTHX_ "Can't do seteuid!\n");
2974 else if (PL_uid) { /* oops, mustn't run as root */
2976 (void)seteuid((Uid_t)PL_uid);
2979 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2981 #ifdef HAS_SETRESUID
2982 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2984 PerlProc_setuid((Uid_t)PL_uid);
2988 if (PerlProc_geteuid() != PL_uid)
2989 Perl_croak(aTHX_ "Can't do seteuid!\n");
2992 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2993 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2996 else if (PL_preprocess)
2997 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2998 else if (fdscript >= 0)
2999 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
3001 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
3003 /* We absolutely must clear out any saved ids here, so we */
3004 /* exec the real perl, substituting fd script for scriptname. */
3005 /* (We pass script name as "subdir" of fd, which perl will grok.) */
3006 PerlIO_rewind(PL_rsfp);
3007 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
3008 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3009 if (!PL_origargv[which])
3010 Perl_croak(aTHX_ "Permission denied");
3011 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
3012 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
3013 #if defined(HAS_FCNTL) && defined(F_SETFD)
3014 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
3016 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
3017 (int)PERL_REVISION, (int)PERL_VERSION,
3018 (int)PERL_SUBVERSION), PL_origargv);/* try again */
3019 Perl_croak(aTHX_ "Can't do setuid\n");
3020 #endif /* IAMSUID */
3022 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
3023 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
3025 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3026 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3028 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3031 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
3032 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3033 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3034 /* not set-id, must be wrapped */
3040 S_find_beginning(pTHX)
3042 register char *s, *s2;
3044 /* skip forward in input to the real script? */
3047 #ifdef MACOS_TRADITIONAL
3048 /* Since the Mac OS does not honor !# arguments for us, we do it ourselves */
3050 while (PL_doextract || gMacPerl_AlwaysExtract) {
3051 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3052 if (!gMacPerl_AlwaysExtract)
3053 Perl_croak(aTHX_ "No Perl script found in input\n");
3055 if (PL_doextract) /* require explicit override ? */
3056 if (!OverrideExtract(PL_origfilename))
3057 Perl_croak(aTHX_ "User aborted script\n");
3059 PL_doextract = FALSE;
3061 /* Pater peccavi, file does not have #! */
3062 PerlIO_rewind(PL_rsfp);
3067 while (PL_doextract) {
3068 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
3069 Perl_croak(aTHX_ "No Perl script found in input\n");
3071 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
3072 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3073 PL_doextract = FALSE;
3074 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3076 while (*s == ' ' || *s == '\t') s++;
3078 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3079 if (strnEQ(s2-4,"perl",4))
3081 while ((s = moreswitches(s)))
3092 PL_uid = PerlProc_getuid();
3093 PL_euid = PerlProc_geteuid();
3094 PL_gid = PerlProc_getgid();
3095 PL_egid = PerlProc_getegid();
3097 PL_uid |= PL_gid << 16;
3098 PL_euid |= PL_egid << 16;
3100 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3104 S_forbid_setid(pTHX_ char *s)
3106 if (PL_euid != PL_uid)
3107 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3108 if (PL_egid != PL_gid)
3109 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3113 Perl_init_debugger(pTHX)
3116 HV *ostash = PL_curstash;
3118 PL_curstash = PL_debstash;
3119 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3120 AvREAL_off(PL_dbargs);
3121 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3122 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3123 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3124 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3125 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3126 sv_setiv(PL_DBsingle, 0);
3127 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3128 sv_setiv(PL_DBtrace, 0);
3129 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3130 sv_setiv(PL_DBsignal, 0);
3131 PL_curstash = ostash;
3134 #ifndef STRESS_REALLOC
3135 #define REASONABLE(size) (size)
3137 #define REASONABLE(size) (1) /* unreasonable */
3141 Perl_init_stacks(pTHX)
3143 /* start with 128-item stack and 8K cxstack */
3144 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3145 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3146 PL_curstackinfo->si_type = PERLSI_MAIN;
3147 PL_curstack = PL_curstackinfo->si_stack;
3148 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3150 PL_stack_base = AvARRAY(PL_curstack);
3151 PL_stack_sp = PL_stack_base;
3152 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3154 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3157 PL_tmps_max = REASONABLE(128);
3159 New(54,PL_markstack,REASONABLE(32),I32);
3160 PL_markstack_ptr = PL_markstack;
3161 PL_markstack_max = PL_markstack + REASONABLE(32);
3165 New(54,PL_scopestack,REASONABLE(32),I32);
3166 PL_scopestack_ix = 0;
3167 PL_scopestack_max = REASONABLE(32);
3169 New(54,PL_savestack,REASONABLE(128),ANY);
3170 PL_savestack_ix = 0;
3171 PL_savestack_max = REASONABLE(128);
3173 New(54,PL_retstack,REASONABLE(16),OP*);
3175 PL_retstack_max = REASONABLE(16);
3184 while (PL_curstackinfo->si_next)
3185 PL_curstackinfo = PL_curstackinfo->si_next;
3186 while (PL_curstackinfo) {
3187 PERL_SI *p = PL_curstackinfo->si_prev;
3188 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3189 Safefree(PL_curstackinfo->si_cxstack);
3190 Safefree(PL_curstackinfo);
3191 PL_curstackinfo = p;
3193 Safefree(PL_tmps_stack);
3194 Safefree(PL_markstack);
3195 Safefree(PL_scopestack);
3196 Safefree(PL_savestack);
3197 Safefree(PL_retstack);
3201 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3212 lex_start(PL_linestr);
3214 PL_subname = newSVpvn("main",4);
3218 S_init_predump_symbols(pTHX)
3224 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3225 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3226 GvMULTI_on(PL_stdingv);
3227 io = GvIOp(PL_stdingv);
3228 IoIFP(io) = PerlIO_stdin();
3229 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3231 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3233 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3236 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3238 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3240 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3242 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3243 GvMULTI_on(PL_stderrgv);
3244 io = GvIOp(PL_stderrgv);
3245 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3246 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3248 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3250 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3253 Safefree(PL_osname);
3254 PL_osname = savepv(OSNAME);
3258 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3265 argc--,argv++; /* skip name of script */
3266 if (PL_doswitches) {
3267 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3270 if (argv[0][1] == '-' && !argv[0][2]) {
3274 if ((s = strchr(argv[0], '='))) {
3276 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3279 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3282 PL_toptarget = NEWSV(0,0);
3283 sv_upgrade(PL_toptarget, SVt_PVFM);
3284 sv_setpvn(PL_toptarget, "", 0);
3285 PL_bodytarget = NEWSV(0,0);
3286 sv_upgrade(PL_bodytarget, SVt_PVFM);
3287 sv_setpvn(PL_bodytarget, "", 0);
3288 PL_formtarget = PL_bodytarget;
3291 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3292 #ifdef MACOS_TRADITIONAL
3293 /* $0 is not majick on a Mac */
3294 sv_setpv(GvSV(tmpgv),MacPerl_MPWFileName(PL_origfilename));
3296 sv_setpv(GvSV(tmpgv),PL_origfilename);
3297 magicname("0", "0", 1);
3300 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3302 sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
3304 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3306 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3307 GvMULTI_on(PL_argvgv);
3308 (void)gv_AVadd(PL_argvgv);
3309 av_clear(GvAVn(PL_argvgv));
3310 for (; argc > 0; argc--,argv++) {
3311 SV *sv = newSVpv(argv[0],0);
3312 av_push(GvAVn(PL_argvgv),sv);
3313 if (PL_widesyscalls)
3314 (void)sv_utf8_decode(sv);
3317 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3319 GvMULTI_on(PL_envgv);
3320 hv = GvHVn(PL_envgv);
3321 hv_magic(hv, PL_envgv, 'E');
3322 #if !defined( VMS) && !defined(EPOC) && !defined(MACOS_TRADITIONAL) /* VMS doesn't have environ array */
3323 /* Note that if the supplied env parameter is actually a copy
3324 of the global environ then it may now point to free'd memory
3325 if the environment has been modified since. To avoid this
3326 problem we treat env==NULL as meaning 'use the default'
3331 environ[0] = Nullch;
3332 for (; *env; env++) {
3333 if (!(s = strchr(*env,'=')))
3339 sv = newSVpv(s--,0);
3340 (void)hv_store(hv, *env, s - *env, sv, 0);
3342 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3343 /* Sins of the RTL. See note in my_setenv(). */
3344 (void)PerlEnv_putenv(savepv(*env));
3348 #ifdef DYNAMIC_ENV_FETCH
3349 HvNAME(hv) = savepv(ENV_HV_NAME);
3353 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3354 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3358 S_init_perllib(pTHX)
3363 s = PerlEnv_getenv("PERL5LIB");
3365 incpush(s, TRUE, TRUE);
3367 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3369 /* Treat PERL5?LIB as a possible search list logical name -- the
3370 * "natural" VMS idiom for a Unix path string. We allow each
3371 * element to be a set of |-separated directories for compatibility.
3375 if (my_trnlnm("PERL5LIB",buf,0))
3376 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3378 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3382 /* Use the ~-expanded versions of APPLLIB (undocumented),
3383 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3386 incpush(APPLLIB_EXP, TRUE, TRUE);
3390 incpush(ARCHLIB_EXP, FALSE, FALSE);
3392 #ifdef MACOS_TRADITIONAL
3394 struct stat tmpstatbuf;
3395 SV * privdir = NEWSV(55, 0);
3396 char * macperl = PerlEnv_getenv("MACPERL");
3401 Perl_sv_setpvf(aTHX_ privdir, "%slib:", macperl);
3402 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3403 incpush(SvPVX(privdir), TRUE, FALSE);
3404 Perl_sv_setpvf(aTHX_ privdir, "%ssite_perl:", macperl);
3405 if (PerlLIO_stat(SvPVX(privdir), &tmpstatbuf) >= 0 && S_ISDIR(tmpstatbuf.st_mode))
3406 incpush(SvPVX(privdir), TRUE, FALSE);
3408 SvREFCNT_dec(privdir);
3411 incpush(":", FALSE, FALSE);
3414 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3417 incpush(PRIVLIB_EXP, TRUE, FALSE);
3419 incpush(PRIVLIB_EXP, FALSE, FALSE);
3423 /* sitearch is always relative to sitelib on Windows for
3424 * DLL-based path intuition to work correctly */
3425 # if !defined(WIN32)
3426 incpush(SITEARCH_EXP, FALSE, FALSE);
3432 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3434 incpush(SITELIB_EXP, FALSE, FALSE);
3438 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3439 incpush(SITELIB_STEM, FALSE, TRUE);
3442 #ifdef PERL_VENDORARCH_EXP
3443 /* vendorarch is always relative to vendorlib on Windows for
3444 * DLL-based path intuition to work correctly */
3445 # if !defined(WIN32)
3446 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3450 #ifdef PERL_VENDORLIB_EXP
3452 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3454 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3458 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3459 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3462 #ifdef PERL_OTHERLIBDIRS
3463 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3467 incpush(".", FALSE, FALSE);
3468 #endif /* MACOS_TRADITIONAL */
3471 #if defined(DOSISH) || defined(EPOC)
3472 # define PERLLIB_SEP ';'
3475 # define PERLLIB_SEP '|'
3477 # if defined(MACOS_TRADITIONAL)
3478 # define PERLLIB_SEP ','
3480 # define PERLLIB_SEP ':'
3484 #ifndef PERLLIB_MANGLE
3485 # define PERLLIB_MANGLE(s,n) (s)
3489 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3491 SV *subdir = Nullsv;
3496 if (addsubdirs || addoldvers) {
3497 subdir = sv_newmortal();
3500 /* Break at all separators */
3502 SV *libdir = NEWSV(55,0);
3505 /* skip any consecutive separators */
3506 while ( *p == PERLLIB_SEP ) {
3507 /* Uncomment the next line for PATH semantics */
3508 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3512 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3513 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3518 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3519 p = Nullch; /* break out */
3521 #ifdef MACOS_TRADITIONAL
3522 if (!strchr(SvPVX(libdir), ':'))
3523 sv_insert(libdir, 0, 0, ":", 1);
3524 if (SvPVX(libdir)[SvCUR(libdir)-1] != ':')
3525 sv_catpv(libdir, ":");
3529 * BEFORE pushing libdir onto @INC we may first push version- and
3530 * archname-specific sub-directories.
3532 if (addsubdirs || addoldvers) {
3533 #ifdef PERL_INC_VERSION_LIST
3534 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3535 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3536 const char **incver;
3538 struct stat tmpstatbuf;
3543 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3545 while (unix[len-1] == '/') len--; /* Cosmetic */
3546 sv_usepvn(libdir,unix,len);
3549 PerlIO_printf(Perl_error_log,
3550 "Failed to unixify @INC element \"%s\"\n",
3554 #ifdef MACOS_TRADITIONAL
3555 #define PERL_AV_SUFFIX_FMT ""
3556 #define PERL_ARCH_FMT ":%s"
3558 #define PERL_AV_SUFFIX_FMT "/"
3559 #define PERL_ARCH_FMT "/%s"
3561 /* .../version/archname if -d .../version/archname */
3562 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT PERL_ARCH_FMT,
3564 (int)PERL_REVISION, (int)PERL_VERSION,
3565 (int)PERL_SUBVERSION, ARCHNAME);
3566 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3567 S_ISDIR(tmpstatbuf.st_mode))
3568 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3570 /* .../version if -d .../version */
3571 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_AV_SUFFIX_FMT PERL_FS_VER_FMT, libdir,
3572 (int)PERL_REVISION, (int)PERL_VERSION,
3573 (int)PERL_SUBVERSION);
3574 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3575 S_ISDIR(tmpstatbuf.st_mode))
3576 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3578 /* .../archname if -d .../archname */
3579 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, ARCHNAME);
3580 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3581 S_ISDIR(tmpstatbuf.st_mode))
3582 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3585 #ifdef PERL_INC_VERSION_LIST
3587 for (incver = incverlist; *incver; incver++) {
3588 /* .../xxx if -d .../xxx */
3589 Perl_sv_setpvf(aTHX_ subdir, "%"SVf PERL_ARCH_FMT, libdir, *incver);
3590 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3591 S_ISDIR(tmpstatbuf.st_mode))
3592 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3598 /* finally push this lib directory on the end of @INC */
3599 av_push(GvAVn(PL_incgv), libdir);
3604 STATIC struct perl_thread *
3605 S_init_main_thread(pTHX)
3607 #if !defined(PERL_IMPLICIT_CONTEXT)
3608 struct perl_thread *thr;
3612 Newz(53, thr, 1, struct perl_thread);
3613 PL_curcop = &PL_compiling;
3614 thr->interp = PERL_GET_INTERP;
3615 thr->cvcache = newHV();
3616 thr->threadsv = newAV();
3617 /* thr->threadsvp is set when find_threadsv is called */
3618 thr->specific = newAV();
3619 thr->flags = THRf_R_JOINABLE;
3620 MUTEX_INIT(&thr->mutex);
3621 /* Handcraft thrsv similarly to mess_sv */
3622 New(53, PL_thrsv, 1, SV);
3623 Newz(53, xpv, 1, XPV);
3624 SvFLAGS(PL_thrsv) = SVt_PV;
3625 SvANY(PL_thrsv) = (void*)xpv;
3626 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3627 SvPVX(PL_thrsv) = (char*)thr;
3628 SvCUR_set(PL_thrsv, sizeof(thr));
3629 SvLEN_set(PL_thrsv, sizeof(thr));
3630 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3631 thr->oursv = PL_thrsv;
3632 PL_chopset = " \n-";
3635 MUTEX_LOCK(&PL_threads_mutex);
3640 MUTEX_UNLOCK(&PL_threads_mutex);
3642 #ifdef HAVE_THREAD_INTERN
3643 Perl_init_thread_intern(thr);
3646 #ifdef SET_THREAD_SELF
3647 SET_THREAD_SELF(thr);
3649 thr->self = pthread_self();
3650 #endif /* SET_THREAD_SELF */
3654 * These must come after the SET_THR because sv_setpvn does
3655 * SvTAINT and the taint fields require dTHR.
3657 PL_toptarget = NEWSV(0,0);
3658 sv_upgrade(PL_toptarget, SVt_PVFM);
3659 sv_setpvn(PL_toptarget, "", 0);
3660 PL_bodytarget = NEWSV(0,0);
3661 sv_upgrade(PL_bodytarget, SVt_PVFM);
3662 sv_setpvn(PL_bodytarget, "", 0);
3663 PL_formtarget = PL_bodytarget;
3664 thr->errsv = newSVpvn("", 0);
3665 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3668 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3669 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3670 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3671 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3672 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3674 PL_reginterp_cnt = 0;
3678 #endif /* USE_THREADS */
3681 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3685 line_t oldline = CopLINE(PL_curcop);
3691 while (AvFILL(paramList) >= 0) {
3692 cv = (CV*)av_shift(paramList);
3693 if ((PL_minus_c & 0x10) && (paramList == PL_beginav)) {
3694 /* save PL_beginav for compiler */
3695 if (! PL_beginav_save)
3696 PL_beginav_save = newAV();
3697 av_push(PL_beginav_save, (SV*)cv);
3701 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3702 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3708 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3712 (void)SvPV(atsv, len);
3715 PL_curcop = &PL_compiling;
3716 CopLINE_set(PL_curcop, oldline);
3717 if (paramList == PL_beginav)
3718 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3720 Perl_sv_catpvf(aTHX_ atsv,
3721 "%s failed--call queue aborted",
3722 paramList == PL_checkav ? "CHECK"
3723 : paramList == PL_initav ? "INIT"
3725 while (PL_scopestack_ix > oldscope)
3728 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3735 /* my_exit() was called */
3736 while (PL_scopestack_ix > oldscope)
3739 PL_curstash = PL_defstash;
3740 PL_curcop = &PL_compiling;
3741 CopLINE_set(PL_curcop, oldline);
3743 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3744 if (paramList == PL_beginav)
3745 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3747 Perl_croak(aTHX_ "%s failed--call queue aborted",
3748 paramList == PL_checkav ? "CHECK"
3749 : paramList == PL_initav ? "INIT"
3756 PL_curcop = &PL_compiling;
3757 CopLINE_set(PL_curcop, oldline);
3760 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3768 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3770 S_vcall_list_body(pTHX_ va_list args)
3772 CV *cv = va_arg(args, CV*);
3773 return call_list_body(cv);
3778 S_call_list_body(pTHX_ CV *cv)
3780 PUSHMARK(PL_stack_sp);
3781 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3786 Perl_my_exit(pTHX_ U32 status)
3790 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3791 thr, (unsigned long) status));
3800 STATUS_NATIVE_SET(status);
3807 Perl_my_failure_exit(pTHX)
3810 if (vaxc$errno & 1) {
3811 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3812 STATUS_NATIVE_SET(44);
3815 if (!vaxc$errno && errno) /* unlikely */
3816 STATUS_NATIVE_SET(44);
3818 STATUS_NATIVE_SET(vaxc$errno);
3823 STATUS_POSIX_SET(errno);
3825 exitstatus = STATUS_POSIX >> 8;
3826 if (exitstatus & 255)
3827 STATUS_POSIX_SET(exitstatus);
3829 STATUS_POSIX_SET(255);
3836 S_my_exit_jump(pTHX)
3839 register PERL_CONTEXT *cx;
3844 SvREFCNT_dec(PL_e_script);
3845 PL_e_script = Nullsv;
3848 POPSTACK_TO(PL_mainstack);
3849 if (cxstack_ix >= 0) {
3852 POPBLOCK(cx,PL_curpm);
3864 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3867 p = SvPVX(PL_e_script);
3868 nl = strchr(p, '\n');
3869 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3871 filter_del(read_e_script);
3874 sv_catpvn(buf_sv, p, nl-p);
3875 sv_chop(PL_e_script, nl);