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);
184 thr = init_main_thread();
185 #endif /* USE_THREADS */
187 #ifdef PERL_FLEXIBLE_EXCEPTIONS
188 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
191 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
193 PL_linestr = NEWSV(65,79);
194 sv_upgrade(PL_linestr,SVt_PVIV);
196 if (!SvREADONLY(&PL_sv_undef)) {
197 /* set read-only and try to insure than we wont see REFCNT==0
200 SvREADONLY_on(&PL_sv_undef);
201 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
203 sv_setpv(&PL_sv_no,PL_No);
205 SvREADONLY_on(&PL_sv_no);
206 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
208 sv_setpv(&PL_sv_yes,PL_Yes);
210 SvREADONLY_on(&PL_sv_yes);
211 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
216 /* PL_sighandlerp = sighandler; */
218 PL_sighandlerp = Perl_sighandler;
220 PL_pidstatus = newHV();
224 * There is no way we can refer to them from Perl so close them to save
225 * space. The other alternative would be to provide STDAUX and STDPRN
228 (void)fclose(stdaux);
229 (void)fclose(stdprn);
233 PL_nrs = newSVpvn("\n", 1);
234 PL_rs = SvREFCNT_inc(PL_nrs);
239 PL_lex_state = LEX_NOTPARSING;
245 SET_NUMERIC_STANDARD();
249 PL_patchlevel = NEWSV(0,4);
250 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
251 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
252 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
253 s = (U8*)SvPVX(PL_patchlevel);
254 s = uv_to_utf8(s, (UV)PERL_REVISION);
255 s = uv_to_utf8(s, (UV)PERL_VERSION);
256 s = uv_to_utf8(s, (UV)PERL_SUBVERSION);
258 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
259 SvPOK_on(PL_patchlevel);
260 SvNVX(PL_patchlevel) = (NV)PERL_REVISION
261 + ((NV)PERL_VERSION / (NV)1000)
262 #if defined(PERL_SUBVERSION) && PERL_SUBVERSION > 0
263 + ((NV)PERL_SUBVERSION / (NV)1000000)
266 SvNOK_on(PL_patchlevel); /* dual valued */
267 SvUTF8_on(PL_patchlevel);
268 SvREADONLY_on(PL_patchlevel);
271 #if defined(LOCAL_PATCH_COUNT)
272 PL_localpatches = local_patches; /* For possible -v */
275 #ifdef HAVE_INTERP_INTERN
279 PerlIO_init(); /* Hook to IO system */
281 PL_fdpid = newAV(); /* for remembering popen pids by fd */
282 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
283 PL_errors = newSVpvn("",0);
289 =for apidoc perl_destruct
291 Shuts down a Perl interpreter. See L<perlembed>.
300 int destruct_level; /* 0=none, 1=full, 2=full with checks */
306 #endif /* USE_THREADS */
308 /* wait for all pseudo-forked children to finish */
309 PERL_WAIT_FOR_CHILDREN;
313 /* Pass 1 on any remaining threads: detach joinables, join zombies */
315 MUTEX_LOCK(&PL_threads_mutex);
316 DEBUG_S(PerlIO_printf(Perl_debug_log,
317 "perl_destruct: waiting for %d threads...\n",
319 for (t = thr->next; t != thr; t = t->next) {
320 MUTEX_LOCK(&t->mutex);
321 switch (ThrSTATE(t)) {
324 DEBUG_S(PerlIO_printf(Perl_debug_log,
325 "perl_destruct: joining zombie %p\n", t));
326 ThrSETSTATE(t, THRf_DEAD);
327 MUTEX_UNLOCK(&t->mutex);
330 * The SvREFCNT_dec below may take a long time (e.g. av
331 * may contain an object scalar whose destructor gets
332 * called) so we have to unlock threads_mutex and start
335 MUTEX_UNLOCK(&PL_threads_mutex);
337 SvREFCNT_dec((SV*)av);
338 DEBUG_S(PerlIO_printf(Perl_debug_log,
339 "perl_destruct: joined zombie %p OK\n", t));
341 case THRf_R_JOINABLE:
342 DEBUG_S(PerlIO_printf(Perl_debug_log,
343 "perl_destruct: detaching thread %p\n", t));
344 ThrSETSTATE(t, THRf_R_DETACHED);
346 * We unlock threads_mutex and t->mutex in the opposite order
347 * from which we locked them just so that DETACH won't
348 * deadlock if it panics. It's only a breach of good style
349 * not a bug since they are unlocks not locks.
351 MUTEX_UNLOCK(&PL_threads_mutex);
353 MUTEX_UNLOCK(&t->mutex);
356 DEBUG_S(PerlIO_printf(Perl_debug_log,
357 "perl_destruct: ignoring %p (state %u)\n",
359 MUTEX_UNLOCK(&t->mutex);
360 /* fall through and out */
363 /* We leave the above "Pass 1" loop with threads_mutex still locked */
365 /* Pass 2 on remaining threads: wait for the thread count to drop to one */
366 while (PL_nthreads > 1)
368 DEBUG_S(PerlIO_printf(Perl_debug_log,
369 "perl_destruct: final wait for %d threads\n",
371 COND_WAIT(&PL_nthreads_cond, &PL_threads_mutex);
373 /* At this point, we're the last thread */
374 MUTEX_UNLOCK(&PL_threads_mutex);
375 DEBUG_S(PerlIO_printf(Perl_debug_log, "perl_destruct: armageddon has arrived\n"));
376 MUTEX_DESTROY(&PL_threads_mutex);
377 COND_DESTROY(&PL_nthreads_cond);
378 #endif /* !defined(FAKE_THREADS) */
379 #endif /* USE_THREADS */
381 destruct_level = PL_perl_destruct_level;
385 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
387 if (destruct_level < i)
396 /* We must account for everything. */
398 /* Destroy the main CV and syntax tree */
400 PL_curpad = AvARRAY(PL_comppad);
401 op_free(PL_main_root);
402 PL_main_root = Nullop;
404 PL_curcop = &PL_compiling;
405 PL_main_start = Nullop;
406 SvREFCNT_dec(PL_main_cv);
410 if (PL_sv_objcount) {
412 * Try to destruct global references. We do this first so that the
413 * destructors and destructees still exist. Some sv's might remain.
414 * Non-referenced objects are on their own.
419 /* unhook hooks which will soon be, or use, destroyed data */
420 SvREFCNT_dec(PL_warnhook);
421 PL_warnhook = Nullsv;
422 SvREFCNT_dec(PL_diehook);
425 /* call exit list functions */
426 while (PL_exitlistlen-- > 0)
427 PL_exitlist[PL_exitlistlen].fn(aTHXo_ PL_exitlist[PL_exitlistlen].ptr);
429 Safefree(PL_exitlist);
431 if (destruct_level == 0){
433 DEBUG_P(debprofdump());
435 /* The exit() function will do everything that needs doing. */
439 /* loosen bonds of global variables */
442 (void)PerlIO_close(PL_rsfp);
446 /* Filters for program text */
447 SvREFCNT_dec(PL_rsfp_filters);
448 PL_rsfp_filters = Nullav;
451 PL_preprocess = FALSE;
457 PL_doswitches = FALSE;
458 PL_dowarn = G_WARN_OFF;
459 PL_doextract = FALSE;
460 PL_sawampersand = FALSE; /* must save all match strings */
463 Safefree(PL_inplace);
465 SvREFCNT_dec(PL_patchlevel);
468 SvREFCNT_dec(PL_e_script);
469 PL_e_script = Nullsv;
472 /* magical thingies */
474 Safefree(PL_ofs); /* $, */
477 Safefree(PL_ors); /* $\ */
480 SvREFCNT_dec(PL_rs); /* $/ */
483 SvREFCNT_dec(PL_nrs); /* $/ helper */
486 PL_multiline = 0; /* $* */
487 Safefree(PL_osname); /* $^O */
490 SvREFCNT_dec(PL_statname);
491 PL_statname = Nullsv;
494 /* defgv, aka *_ should be taken care of elsewhere */
496 /* clean up after study() */
497 SvREFCNT_dec(PL_lastscream);
498 PL_lastscream = Nullsv;
499 Safefree(PL_screamfirst);
501 Safefree(PL_screamnext);
505 Safefree(PL_efloatbuf);
506 PL_efloatbuf = Nullch;
509 /* startup and shutdown function lists */
510 SvREFCNT_dec(PL_beginav);
511 SvREFCNT_dec(PL_endav);
512 SvREFCNT_dec(PL_checkav);
513 SvREFCNT_dec(PL_initav);
519 /* shortcuts just get cleared */
525 PL_argvoutgv = Nullgv;
527 PL_stderrgv = Nullgv;
528 PL_last_in_gv = Nullgv;
530 PL_debstash = Nullhv;
532 /* reset so print() ends up where we expect */
535 SvREFCNT_dec(PL_argvout_stack);
536 PL_argvout_stack = Nullav;
538 SvREFCNT_dec(PL_modglobal);
539 PL_modglobal = Nullhv;
540 SvREFCNT_dec(PL_preambleav);
541 PL_preambleav = Nullav;
542 SvREFCNT_dec(PL_subname);
544 SvREFCNT_dec(PL_linestr);
546 SvREFCNT_dec(PL_pidstatus);
547 PL_pidstatus = Nullhv;
548 SvREFCNT_dec(PL_toptarget);
549 PL_toptarget = Nullsv;
550 SvREFCNT_dec(PL_bodytarget);
551 PL_bodytarget = Nullsv;
552 PL_formtarget = Nullsv;
554 /* free locale stuff */
555 #ifdef USE_LOCALE_COLLATE
556 Safefree(PL_collation_name);
557 PL_collation_name = Nullch;
560 #ifdef USE_LOCALE_NUMERIC
561 Safefree(PL_numeric_name);
562 PL_numeric_name = Nullch;
565 /* clear utf8 character classes */
566 SvREFCNT_dec(PL_utf8_alnum);
567 SvREFCNT_dec(PL_utf8_alnumc);
568 SvREFCNT_dec(PL_utf8_ascii);
569 SvREFCNT_dec(PL_utf8_alpha);
570 SvREFCNT_dec(PL_utf8_space);
571 SvREFCNT_dec(PL_utf8_cntrl);
572 SvREFCNT_dec(PL_utf8_graph);
573 SvREFCNT_dec(PL_utf8_digit);
574 SvREFCNT_dec(PL_utf8_upper);
575 SvREFCNT_dec(PL_utf8_lower);
576 SvREFCNT_dec(PL_utf8_print);
577 SvREFCNT_dec(PL_utf8_punct);
578 SvREFCNT_dec(PL_utf8_xdigit);
579 SvREFCNT_dec(PL_utf8_mark);
580 SvREFCNT_dec(PL_utf8_toupper);
581 SvREFCNT_dec(PL_utf8_tolower);
582 PL_utf8_alnum = Nullsv;
583 PL_utf8_alnumc = Nullsv;
584 PL_utf8_ascii = Nullsv;
585 PL_utf8_alpha = Nullsv;
586 PL_utf8_space = Nullsv;
587 PL_utf8_cntrl = Nullsv;
588 PL_utf8_graph = Nullsv;
589 PL_utf8_digit = Nullsv;
590 PL_utf8_upper = Nullsv;
591 PL_utf8_lower = Nullsv;
592 PL_utf8_print = Nullsv;
593 PL_utf8_punct = Nullsv;
594 PL_utf8_xdigit = Nullsv;
595 PL_utf8_mark = Nullsv;
596 PL_utf8_toupper = Nullsv;
597 PL_utf8_totitle = Nullsv;
598 PL_utf8_tolower = Nullsv;
600 if (!specialWARN(PL_compiling.cop_warnings))
601 SvREFCNT_dec(PL_compiling.cop_warnings);
602 PL_compiling.cop_warnings = Nullsv;
604 SvREFCNT_dec(CopFILEGV(&PL_compiling));
605 CopFILEGV_set(&PL_compiling, Nullgv);
608 /* Prepare to destruct main symbol table. */
613 SvREFCNT_dec(PL_curstname);
614 PL_curstname = Nullsv;
616 /* clear queued errors */
617 SvREFCNT_dec(PL_errors);
621 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
622 if (PL_scopestack_ix != 0)
623 Perl_warner(aTHX_ WARN_INTERNAL,
624 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
625 (long)PL_scopestack_ix);
626 if (PL_savestack_ix != 0)
627 Perl_warner(aTHX_ WARN_INTERNAL,
628 "Unbalanced saves: %ld more saves than restores\n",
629 (long)PL_savestack_ix);
630 if (PL_tmps_floor != -1)
631 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n",
632 (long)PL_tmps_floor + 1);
633 if (cxstack_ix != -1)
634 Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced context: %ld more PUSHes than POPs\n",
635 (long)cxstack_ix + 1);
638 /* Now absolutely destruct everything, somehow or other, loops or no. */
640 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
641 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
642 while (PL_sv_count != 0 && PL_sv_count != last_sv_count) {
643 last_sv_count = PL_sv_count;
646 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
647 SvFLAGS(PL_fdpid) |= SVt_PVAV;
648 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
649 SvFLAGS(PL_strtab) |= SVt_PVHV;
651 AvREAL_off(PL_fdpid); /* no surviving entries */
652 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
655 /* Destruct the global string table. */
657 /* Yell and reset the HeVAL() slots that are still holding refcounts,
658 * so that sv_free() won't fail on them.
666 max = HvMAX(PL_strtab);
667 array = HvARRAY(PL_strtab);
670 if (hent && ckWARN_d(WARN_INTERNAL)) {
671 Perl_warner(aTHX_ WARN_INTERNAL,
672 "Unbalanced string table refcount: (%d) for \"%s\"",
673 HeVAL(hent) - Nullsv, HeKEY(hent));
674 HeVAL(hent) = Nullsv;
684 SvREFCNT_dec(PL_strtab);
686 /* free special SVs */
688 SvREFCNT(&PL_sv_yes) = 0;
689 sv_clear(&PL_sv_yes);
690 SvANY(&PL_sv_yes) = NULL;
691 SvFLAGS(&PL_sv_yes) = 0;
693 SvREFCNT(&PL_sv_no) = 0;
695 SvANY(&PL_sv_no) = NULL;
696 SvFLAGS(&PL_sv_no) = 0;
698 SvREFCNT(&PL_sv_undef) = 0;
699 SvREADONLY_off(&PL_sv_undef);
701 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
702 Perl_warner(aTHX_ WARN_INTERNAL,"Scalars leaked: %ld\n", (long)PL_sv_count);
706 /* No SVs have survived, need to clean out */
707 Safefree(PL_origfilename);
708 Safefree(PL_reg_start_tmp);
710 Safefree(PL_reg_curpm);
711 Safefree(PL_reg_poscache);
712 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
713 Safefree(PL_op_mask);
715 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
717 DEBUG_P(debprofdump());
719 MUTEX_DESTROY(&PL_strtab_mutex);
720 MUTEX_DESTROY(&PL_sv_mutex);
721 MUTEX_DESTROY(&PL_eval_mutex);
722 MUTEX_DESTROY(&PL_cred_mutex);
723 COND_DESTROY(&PL_eval_cond);
724 #ifdef EMULATE_ATOMIC_REFCOUNTS
725 MUTEX_DESTROY(&PL_svref_mutex);
726 #endif /* EMULATE_ATOMIC_REFCOUNTS */
728 /* As the penultimate thing, free the non-arena SV for thrsv */
729 Safefree(SvPVX(PL_thrsv));
730 Safefree(SvANY(PL_thrsv));
733 #endif /* USE_THREADS */
735 /* As the absolutely last thing, free the non-arena SV for mess() */
738 /* it could have accumulated taint magic */
739 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
742 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
743 moremagic = mg->mg_moremagic;
744 if (mg->mg_ptr && mg->mg_type != 'g' && mg->mg_len >= 0)
745 Safefree(mg->mg_ptr);
749 /* we know that type >= SVt_PV */
750 (void)SvOOK_off(PL_mess_sv);
751 Safefree(SvPVX(PL_mess_sv));
752 Safefree(SvANY(PL_mess_sv));
753 Safefree(PL_mess_sv);
759 =for apidoc perl_free
761 Releases a Perl interpreter. See L<perlembed>.
769 #if defined(PERL_OBJECT)
772 # if defined(PERL_IMPLICIT_SYS) && defined(WIN32)
773 void *host = w32_internal_host;
775 win32_delete_internal_host(host);
783 Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
785 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
786 PL_exitlist[PL_exitlistlen].fn = fn;
787 PL_exitlist[PL_exitlistlen].ptr = ptr;
792 =for apidoc perl_parse
794 Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
800 perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
810 #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
813 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
814 setuid perl scripts securely.\n");
818 #if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
819 _dyld_lookup_and_bind
820 ("__environ", (unsigned long *) &environ_pointer, NULL);
825 #ifndef VMS /* VMS doesn't have environ array */
826 PL_origenviron = environ;
831 /* Come here if running an undumped a.out. */
833 PL_origfilename = savepv(argv[0]);
834 PL_do_undump = FALSE;
835 cxstack_ix = -1; /* start label stack again */
837 init_postdump_symbols(argc,argv,env);
842 PL_curpad = AvARRAY(PL_comppad);
843 op_free(PL_main_root);
844 PL_main_root = Nullop;
846 PL_main_start = Nullop;
847 SvREFCNT_dec(PL_main_cv);
851 oldscope = PL_scopestack_ix;
852 PL_dowarn = G_WARN_OFF;
854 #ifdef PERL_FLEXIBLE_EXCEPTIONS
855 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
861 #ifndef PERL_FLEXIBLE_EXCEPTIONS
862 parse_body(env,xsinit);
865 call_list(oldscope, PL_checkav);
872 /* my_exit() was called */
873 while (PL_scopestack_ix > oldscope)
876 PL_curstash = PL_defstash;
878 call_list(oldscope, PL_checkav);
879 ret = STATUS_NATIVE_EXPORT;
882 PerlIO_printf(Perl_error_log, "panic: top_env\n");
890 #ifdef PERL_FLEXIBLE_EXCEPTIONS
892 S_vparse_body(pTHX_ va_list args)
894 char **env = va_arg(args, char**);
895 XSINIT_t xsinit = va_arg(args, XSINIT_t);
897 return parse_body(env, xsinit);
902 S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
905 int argc = PL_origargc;
906 char **argv = PL_origargv;
907 char *scriptname = NULL;
909 VOL bool dosearch = FALSE;
914 char *cddir = Nullch;
916 sv_setpvn(PL_linestr,"",0);
917 sv = newSVpvn("",0); /* first used for -I flags */
921 for (argc--,argv++; argc > 0; argc--,argv++) {
922 if (argv[0][0] != '-' || !argv[0][1])
926 validarg = " PHOOEY ";
935 win32_argv2utf8(argc-1, argv+1);
938 #ifndef PERL_STRICT_CR
962 if ((s = moreswitches(s)))
972 if (PL_euid != PL_uid || PL_egid != PL_gid)
973 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
975 PL_e_script = newSVpvn("",0);
976 filter_add(read_e_script, NULL);
979 sv_catpv(PL_e_script, s);
981 sv_catpv(PL_e_script, argv[1]);
985 Perl_croak(aTHX_ "No code specified for -e");
986 sv_catpv(PL_e_script, "\n");
989 case 'I': /* -I handled both here and in moreswitches() */
991 if (!*++s && (s=argv[1]) != Nullch) {
996 STRLEN len = strlen(s);
998 incpush(p, TRUE, TRUE);
999 sv_catpvn(sv, "-I", 2);
1000 sv_catpvn(sv, p, len);
1001 sv_catpvn(sv, " ", 1);
1005 Perl_croak(aTHX_ "No directory specified for -I");
1009 PL_preprocess = TRUE;
1019 PL_preambleav = newAV();
1020 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
1022 PL_Sv = newSVpv("print myconfig();",0);
1024 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
1026 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
1028 sv_catpv(PL_Sv,"\" Compile-time options:");
1030 sv_catpv(PL_Sv," DEBUGGING");
1032 # ifdef MULTIPLICITY
1033 sv_catpv(PL_Sv," MULTIPLICITY");
1036 sv_catpv(PL_Sv," USE_THREADS");
1038 # ifdef USE_ITHREADS
1039 sv_catpv(PL_Sv," USE_ITHREADS");
1041 # ifdef USE_64_BIT_INT
1042 sv_catpv(PL_Sv," USE_64_BIT_INT");
1044 # ifdef USE_64_BIT_ALL
1045 sv_catpv(PL_Sv," USE_64_BIT_ALL");
1047 # ifdef USE_LONG_DOUBLE
1048 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1050 # ifdef USE_LARGE_FILES
1051 sv_catpv(PL_Sv," USE_LARGE_FILES");
1054 sv_catpv(PL_Sv," USE_SOCKS");
1057 sv_catpv(PL_Sv," PERL_OBJECT");
1059 # ifdef PERL_IMPLICIT_CONTEXT
1060 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1062 # ifdef PERL_IMPLICIT_SYS
1063 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1065 sv_catpv(PL_Sv,"\\n\",");
1067 #if defined(LOCAL_PATCH_COUNT)
1068 if (LOCAL_PATCH_COUNT > 0) {
1070 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
1071 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1072 if (PL_localpatches[i])
1073 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
1077 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
1080 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
1082 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
1085 sv_catpv(PL_Sv, "; \
1087 @env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \
1088 print \" \\%ENV:\\n @env\\n\" if @env; \
1089 print \" \\@INC:\\n @INC\\n\";");
1092 PL_Sv = newSVpv("config_vars(qw(",0);
1093 sv_catpv(PL_Sv, ++s);
1094 sv_catpv(PL_Sv, "))");
1097 av_push(PL_preambleav, PL_Sv);
1098 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1101 PL_doextract = TRUE;
1109 if (!*++s || isSPACE(*s)) {
1113 /* catch use of gnu style long options */
1114 if (strEQ(s, "version")) {
1118 if (strEQ(s, "help")) {
1125 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
1131 #ifndef SECURE_INTERNAL_GETENV
1134 (s = PerlEnv_getenv("PERL5OPT")))
1138 if (*s == '-' && *(s+1) == 'T')
1151 if (!strchr("DIMUdmw", *s))
1152 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
1153 s = moreswitches(s);
1159 scriptname = argv[0];
1162 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1164 else if (scriptname == Nullch) {
1166 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1174 open_script(scriptname,dosearch,sv,&fdscript);
1176 validate_suid(validarg, scriptname,fdscript);
1178 #if defined(SIGCHLD) || defined(SIGCLD)
1181 # define SIGCHLD SIGCLD
1183 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1184 if (sigstate == SIG_IGN) {
1185 if (ckWARN(WARN_SIGNAL))
1186 Perl_warner(aTHX_ WARN_SIGNAL,
1187 "Can't ignore signal CHLD, forcing to default");
1188 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1195 if (cddir && PerlDir_chdir(cddir) < 0)
1196 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1200 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1201 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1202 CvUNIQUE_on(PL_compcv);
1204 PL_comppad = newAV();
1205 av_push(PL_comppad, Nullsv);
1206 PL_curpad = AvARRAY(PL_comppad);
1207 PL_comppad_name = newAV();
1208 PL_comppad_name_fill = 0;
1209 PL_min_intro_pending = 0;
1212 av_store(PL_comppad_name, 0, newSVpvn("@_", 2));
1213 PL_curpad[0] = (SV*)newAV();
1214 SvPADMY_on(PL_curpad[0]); /* XXX Needed? */
1215 CvOWNER(PL_compcv) = 0;
1216 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1217 MUTEX_INIT(CvMUTEXP(PL_compcv));
1218 #endif /* USE_THREADS */
1220 comppadlist = newAV();
1221 AvREAL_off(comppadlist);
1222 av_store(comppadlist, 0, (SV*)PL_comppad_name);
1223 av_store(comppadlist, 1, (SV*)PL_comppad);
1224 CvPADLIST(PL_compcv) = comppadlist;
1226 boot_core_UNIVERSAL();
1228 boot_core_xsutils();
1232 (*xsinit)(aTHXo); /* in case linked C routines want magical variables */
1233 #if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__)
1241 init_predump_symbols();
1242 /* init_postdump_symbols not currently designed to be called */
1243 /* more than once (ENV isn't cleared first, for example) */
1244 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
1246 init_postdump_symbols(argc,argv,env);
1250 /* now parse the script */
1252 SETERRNO(0,SS$_NORMAL);
1254 if (yyparse() || PL_error_count) {
1256 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
1258 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1262 CopLINE_set(PL_curcop, 0);
1263 PL_curstash = PL_defstash;
1264 PL_preprocess = FALSE;
1266 SvREFCNT_dec(PL_e_script);
1267 PL_e_script = Nullsv;
1270 /* now that script is parsed, we can modify record separator */
1271 SvREFCNT_dec(PL_rs);
1272 PL_rs = SvREFCNT_inc(PL_nrs);
1273 sv_setsv(get_sv("/", TRUE), PL_rs);
1278 SAVECOPFILE(PL_curcop);
1279 SAVECOPLINE(PL_curcop);
1280 gv_check(PL_defstash);
1287 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1288 dump_mstats("after compilation:");
1297 =for apidoc perl_run
1299 Tells a Perl interpreter to run. See L<perlembed>.
1315 oldscope = PL_scopestack_ix;
1317 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1319 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1325 cxstack_ix = -1; /* start context stack again */
1327 case 0: /* normal completion */
1328 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1333 case 2: /* my_exit() */
1334 while (PL_scopestack_ix > oldscope)
1337 PL_curstash = PL_defstash;
1338 if (PL_endav && !PL_minus_c)
1339 call_list(oldscope, PL_endav);
1341 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1342 dump_mstats("after execution: ");
1344 ret = STATUS_NATIVE_EXPORT;
1348 POPSTACK_TO(PL_mainstack);
1351 PerlIO_printf(Perl_error_log, "panic: restartop\n");
1361 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1363 S_vrun_body(pTHX_ va_list args)
1365 I32 oldscope = va_arg(args, I32);
1367 return run_body(oldscope);
1373 S_run_body(pTHX_ I32 oldscope)
1377 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
1378 PL_sawampersand ? "Enabling" : "Omitting"));
1380 if (!PL_restartop) {
1381 DEBUG_x(dump_all());
1382 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
1383 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1387 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
1390 if (PERLDB_SINGLE && PL_DBsingle)
1391 sv_setiv(PL_DBsingle, 1);
1393 call_list(oldscope, PL_initav);
1399 PL_op = PL_restartop;
1403 else if (PL_main_start) {
1404 CvDEPTH(PL_main_cv) = 1;
1405 PL_op = PL_main_start;
1415 =for apidoc p||get_sv
1417 Returns the SV of the specified Perl scalar. If C<create> is set and the
1418 Perl variable does not exist then it will be created. If C<create> is not
1419 set and the variable does not exist then NULL is returned.
1425 Perl_get_sv(pTHX_ const char *name, I32 create)
1429 if (name[1] == '\0' && !isALPHA(name[0])) {
1430 PADOFFSET tmp = find_threadsv(name);
1431 if (tmp != NOT_IN_PAD) {
1433 return THREADSV(tmp);
1436 #endif /* USE_THREADS */
1437 gv = gv_fetchpv(name, create, SVt_PV);
1444 =for apidoc p||get_av
1446 Returns the AV of the specified Perl array. If C<create> is set and the
1447 Perl variable does not exist then it will be created. If C<create> is not
1448 set and the variable does not exist then NULL is returned.
1454 Perl_get_av(pTHX_ const char *name, I32 create)
1456 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1465 =for apidoc p||get_hv
1467 Returns the HV of the specified Perl hash. If C<create> is set and the
1468 Perl variable does not exist then it will be created. If C<create> is not
1469 set and the variable does not exist then NULL is returned.
1475 Perl_get_hv(pTHX_ const char *name, I32 create)
1477 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1486 =for apidoc p||get_cv
1488 Returns the CV of the specified Perl subroutine. If C<create> is set and
1489 the Perl subroutine does not exist then it will be declared (which has the
1490 same effect as saying C<sub name;>). If C<create> is not set and the
1491 subroutine does not exist then NULL is returned.
1497 Perl_get_cv(pTHX_ const char *name, I32 create)
1499 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
1500 /* XXX unsafe for threads if eval_owner isn't held */
1501 /* XXX this is probably not what they think they're getting.
1502 * It has the same effect as "sub name;", i.e. just a forward
1504 if (create && !GvCVu(gv))
1505 return newSUB(start_subparse(FALSE, 0),
1506 newSVOP(OP_CONST, 0, newSVpv(name,0)),
1514 /* Be sure to refetch the stack pointer after calling these routines. */
1517 =for apidoc p||call_argv
1519 Performs a callback to the specified Perl sub. See L<perlcall>.
1525 Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
1527 /* See G_* flags in cop.h */
1528 /* null terminated arg list */
1535 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
1540 return call_pv(sub_name, flags);
1544 =for apidoc p||call_pv
1546 Performs a callback to the specified Perl sub. See L<perlcall>.
1552 Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
1553 /* name of the subroutine */
1554 /* See G_* flags in cop.h */
1556 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
1560 =for apidoc p||call_method
1562 Performs a callback to the specified Perl method. The blessed object must
1563 be on the stack. See L<perlcall>.
1569 Perl_call_method(pTHX_ const char *methname, I32 flags)
1570 /* name of the subroutine */
1571 /* See G_* flags in cop.h */
1573 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
1576 /* May be called with any of a CV, a GV, or an SV containing the name. */
1578 =for apidoc p||call_sv
1580 Performs a callback to the Perl sub whose name is in the SV. See
1587 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1589 /* See G_* flags in cop.h */
1592 LOGOP myop; /* fake syntax tree node */
1597 bool oldcatch = CATCH_GET;
1602 if (flags & G_DISCARD) {
1607 Zero(&myop, 1, LOGOP);
1608 myop.op_next = Nullop;
1609 if (!(flags & G_NOARGS))
1610 myop.op_flags |= OPf_STACKED;
1611 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1612 (flags & G_ARRAY) ? OPf_WANT_LIST :
1617 EXTEND(PL_stack_sp, 1);
1618 *++PL_stack_sp = sv;
1620 oldscope = PL_scopestack_ix;
1622 if (PERLDB_SUB && PL_curstash != PL_debstash
1623 /* Handle first BEGIN of -d. */
1624 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1625 /* Try harder, since this may have been a sighandler, thus
1626 * curstash may be meaningless. */
1627 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1628 && !(flags & G_NODEBUG))
1629 PL_op->op_private |= OPpENTERSUB_DB;
1631 if (flags & G_METHOD) {
1632 Zero(&method_op, 1, UNOP);
1633 method_op.op_next = PL_op;
1634 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1635 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
1639 if (!(flags & G_EVAL)) {
1641 call_body((OP*)&myop, FALSE);
1642 retval = PL_stack_sp - (PL_stack_base + oldmark);
1643 CATCH_SET(oldcatch);
1646 cLOGOP->op_other = PL_op;
1648 /* we're trying to emulate pp_entertry() here */
1650 register PERL_CONTEXT *cx;
1651 I32 gimme = GIMME_V;
1656 push_return(Nullop);
1657 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1659 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1661 PL_in_eval = EVAL_INEVAL;
1662 if (flags & G_KEEPERR)
1663 PL_in_eval |= EVAL_KEEPERR;
1669 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1671 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1678 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1680 call_body((OP*)&myop, FALSE);
1682 retval = PL_stack_sp - (PL_stack_base + oldmark);
1683 if (!(flags & G_KEEPERR))
1690 /* my_exit() was called */
1691 PL_curstash = PL_defstash;
1694 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1695 Perl_croak(aTHX_ "Callback called exit");
1700 PL_op = PL_restartop;
1704 PL_stack_sp = PL_stack_base + oldmark;
1705 if (flags & G_ARRAY)
1709 *++PL_stack_sp = &PL_sv_undef;
1714 if (PL_scopestack_ix > oldscope) {
1718 register PERL_CONTEXT *cx;
1730 if (flags & G_DISCARD) {
1731 PL_stack_sp = PL_stack_base + oldmark;
1740 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1742 S_vcall_body(pTHX_ va_list args)
1744 OP *myop = va_arg(args, OP*);
1745 int is_eval = va_arg(args, int);
1747 call_body(myop, is_eval);
1753 S_call_body(pTHX_ OP *myop, int is_eval)
1757 if (PL_op == myop) {
1759 PL_op = Perl_pp_entereval(aTHX);
1761 PL_op = Perl_pp_entersub(aTHX);
1767 /* Eval a string. The G_EVAL flag is always assumed. */
1770 =for apidoc p||eval_sv
1772 Tells Perl to C<eval> the string in the SV.
1778 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1780 /* See G_* flags in cop.h */
1783 UNOP myop; /* fake syntax tree node */
1784 I32 oldmark = SP - PL_stack_base;
1791 if (flags & G_DISCARD) {
1798 Zero(PL_op, 1, UNOP);
1799 EXTEND(PL_stack_sp, 1);
1800 *++PL_stack_sp = sv;
1801 oldscope = PL_scopestack_ix;
1803 if (!(flags & G_NOARGS))
1804 myop.op_flags = OPf_STACKED;
1805 myop.op_next = Nullop;
1806 myop.op_type = OP_ENTEREVAL;
1807 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1808 (flags & G_ARRAY) ? OPf_WANT_LIST :
1810 if (flags & G_KEEPERR)
1811 myop.op_flags |= OPf_SPECIAL;
1813 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1815 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1822 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1824 call_body((OP*)&myop,TRUE);
1826 retval = PL_stack_sp - (PL_stack_base + oldmark);
1827 if (!(flags & G_KEEPERR))
1834 /* my_exit() was called */
1835 PL_curstash = PL_defstash;
1838 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1839 Perl_croak(aTHX_ "Callback called exit");
1844 PL_op = PL_restartop;
1848 PL_stack_sp = PL_stack_base + oldmark;
1849 if (flags & G_ARRAY)
1853 *++PL_stack_sp = &PL_sv_undef;
1859 if (flags & G_DISCARD) {
1860 PL_stack_sp = PL_stack_base + oldmark;
1870 =for apidoc p||eval_pv
1872 Tells Perl to C<eval> the given string and return an SV* result.
1878 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1881 SV* sv = newSVpv(p, 0);
1884 eval_sv(sv, G_SCALAR);
1891 if (croak_on_error && SvTRUE(ERRSV)) {
1893 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1899 /* Require a module. */
1902 =for apidoc p||require_pv
1904 Tells Perl to C<require> a module.
1910 Perl_require_pv(pTHX_ const char *pv)
1914 PUSHSTACKi(PERLSI_REQUIRE);
1916 sv = sv_newmortal();
1917 sv_setpv(sv, "require '");
1920 eval_sv(sv, G_DISCARD);
1926 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1930 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1931 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1935 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1937 /* This message really ought to be max 23 lines.
1938 * Removed -h because the user already knows that opton. Others? */
1940 static char *usage_msg[] = {
1941 "-0[octal] specify record separator (\\0, if no argument)",
1942 "-a autosplit mode with -n or -p (splits $_ into @F)",
1943 "-C enable native wide character system interfaces",
1944 "-c check syntax only (runs BEGIN and CHECK blocks)",
1945 "-d[:debugger] run program under debugger",
1946 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1947 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1948 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1949 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1950 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1951 "-l[octal] enable line ending processing, specifies line terminator",
1952 "-[mM][-]module execute `use/no module...' before executing program",
1953 "-n assume 'while (<>) { ... }' loop around program",
1954 "-p assume loop like -n but print line also, like sed",
1955 "-P run program through C preprocessor before compilation",
1956 "-s enable rudimentary parsing for switches after programfile",
1957 "-S look for programfile using PATH environment variable",
1958 "-T enable tainting checks",
1959 "-u dump core after parsing program",
1960 "-U allow unsafe operations",
1961 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1962 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1963 "-w enable many useful warnings (RECOMMENDED)",
1964 "-W enable all warnings",
1965 "-X disable all warnings",
1966 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1970 char **p = usage_msg;
1972 PerlIO_printf(PerlIO_stdout(),
1973 "\nUsage: %s [switches] [--] [programfile] [arguments]",
1976 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
1979 /* This routine handles any switches that can be given during run */
1982 Perl_moreswitches(pTHX_ char *s)
1991 numlen = 0; /* disallow underscores */
1992 rschar = (U32)scan_oct(s, 4, &numlen);
1993 SvREFCNT_dec(PL_nrs);
1994 if (rschar & ~((U8)~0))
1995 PL_nrs = &PL_sv_undef;
1996 else if (!rschar && numlen >= 2)
1997 PL_nrs = newSVpvn("", 0);
2000 PL_nrs = newSVpvn(&ch, 1);
2005 PL_widesyscalls = TRUE;
2010 PL_splitstr = savepv(s + 1);
2024 if (*s == ':' || *s == '=') {
2025 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2029 PL_perldb = PERLDB_ALL;
2037 if (isALPHA(s[1])) {
2038 static char debopts[] = "psltocPmfrxuLHXDS";
2041 for (s++; *s && (d = strchr(debopts,*s)); s++)
2042 PL_debug |= 1 << (d - debopts);
2045 PL_debug = atoi(s+1);
2046 for (s++; isDIGIT(*s); s++) ;
2048 PL_debug |= 0x80000000;
2051 if (ckWARN_d(WARN_DEBUGGING))
2052 Perl_warner(aTHX_ WARN_DEBUGGING,
2053 "Recompile perl with -DDEBUGGING to use -D switch\n");
2054 for (s++; isALNUM(*s); s++) ;
2060 usage(PL_origargv[0]);
2064 Safefree(PL_inplace);
2065 PL_inplace = savepv(s+1);
2067 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2070 if (*s == '-') /* Additional switches on #! line. */
2074 case 'I': /* -I handled both here and in parse_perl() */
2077 while (*s && isSPACE(*s))
2082 /* ignore trailing spaces (possibly followed by other switches) */
2084 for (e = p; *e && !isSPACE(*e); e++) ;
2088 } while (*p && *p != '-');
2089 e = savepvn(s, e-s);
2090 incpush(e, TRUE, TRUE);
2097 Perl_croak(aTHX_ "No directory specified for -I");
2105 PL_ors = savepv("\n");
2107 numlen = 0; /* disallow underscores */
2108 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2113 if (RsPARA(PL_nrs)) {
2118 PL_ors = SvPV(PL_nrs, PL_orslen);
2119 PL_ors = savepvn(PL_ors, PL_orslen);
2123 forbid_setid("-M"); /* XXX ? */
2126 forbid_setid("-m"); /* XXX ? */
2131 /* -M-foo == 'no foo' */
2132 if (*s == '-') { use = "no "; ++s; }
2133 sv = newSVpv(use,0);
2135 /* We allow -M'Module qw(Foo Bar)' */
2136 while(isALNUM(*s) || *s==':') ++s;
2138 sv_catpv(sv, start);
2139 if (*(start-1) == 'm') {
2141 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2142 sv_catpv( sv, " ()");
2146 Perl_croak(aTHX_ "Module name required with -%c option",
2148 sv_catpvn(sv, start, s-start);
2149 sv_catpv(sv, " split(/,/,q{");
2155 PL_preambleav = newAV();
2156 av_push(PL_preambleav, sv);
2159 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2171 PL_doswitches = TRUE;
2176 Perl_croak(aTHX_ "Too late for \"-T\" option");
2180 PL_do_undump = TRUE;
2188 PerlIO_printf(PerlIO_stdout(),
2189 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2190 PL_patchlevel, ARCHNAME));
2191 #if defined(LOCAL_PATCH_COUNT)
2192 if (LOCAL_PATCH_COUNT > 0)
2193 PerlIO_printf(PerlIO_stdout(),
2194 "\n(with %d registered patch%s, "
2195 "see perl -V for more detail)",
2196 (int)LOCAL_PATCH_COUNT,
2197 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2200 PerlIO_printf(PerlIO_stdout(),
2201 "\n\nCopyright 1987-2000, Larry Wall\n");
2203 PerlIO_printf(PerlIO_stdout(),
2204 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2207 PerlIO_printf(PerlIO_stdout(),
2208 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2209 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2212 PerlIO_printf(PerlIO_stdout(),
2213 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2214 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2217 PerlIO_printf(PerlIO_stdout(),
2218 "atariST series port, ++jrb bammi@cadence.com\n");
2221 PerlIO_printf(PerlIO_stdout(),
2222 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2225 PerlIO_printf(PerlIO_stdout(),
2226 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2229 PerlIO_printf(PerlIO_stdout(),
2230 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2233 PerlIO_printf(PerlIO_stdout(),
2234 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2237 PerlIO_printf(PerlIO_stdout(),
2238 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2241 PerlIO_printf(PerlIO_stdout(),
2242 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2245 PerlIO_printf(PerlIO_stdout(),
2246 "MiNT port by Guido Flohr, 1997-1999\n");
2249 PerlIO_printf(PerlIO_stdout(),
2250 "EPOC port by Olaf Flebbe, 1999-2000\n");
2252 #ifdef BINARY_BUILD_NOTICE
2253 BINARY_BUILD_NOTICE;
2255 PerlIO_printf(PerlIO_stdout(),
2257 Perl may be copied only under the terms of either the Artistic License or the\n\
2258 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2259 Complete documentation for Perl, including FAQ lists, should be found on\n\
2260 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2261 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2264 if (! (PL_dowarn & G_WARN_ALL_MASK))
2265 PL_dowarn |= G_WARN_ON;
2269 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2270 PL_compiling.cop_warnings = pWARN_ALL ;
2274 PL_dowarn = G_WARN_ALL_OFF;
2275 PL_compiling.cop_warnings = pWARN_NONE ;
2280 if (s[1] == '-') /* Additional switches on #! line. */
2285 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2291 #ifdef ALTERNATE_SHEBANG
2292 case 'S': /* OS/2 needs -S on "extproc" line. */
2300 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2305 /* compliments of Tom Christiansen */
2307 /* unexec() can be found in the Gnu emacs distribution */
2308 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2311 Perl_my_unexec(pTHX)
2319 prog = newSVpv(BIN_EXP, 0);
2320 sv_catpv(prog, "/perl");
2321 file = newSVpv(PL_origfilename, 0);
2322 sv_catpv(file, ".perldump");
2324 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2325 /* unexec prints msg to stderr in case of failure */
2326 PerlProc_exit(status);
2329 # include <lib$routines.h>
2330 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2332 ABORT(); /* for use with undump */
2337 /* initialize curinterp */
2342 #ifdef PERL_OBJECT /* XXX kludge */
2345 PL_chopset = " \n-"; \
2346 PL_copline = NOLINE; \
2347 PL_curcop = &PL_compiling;\
2348 PL_curcopdb = NULL; \
2350 PL_dumpindent = 4; \
2351 PL_laststatval = -1; \
2352 PL_laststype = OP_STAT; \
2353 PL_maxscream = -1; \
2354 PL_maxsysfd = MAXSYSFD; \
2355 PL_statname = Nullsv; \
2356 PL_tmps_floor = -1; \
2358 PL_op_mask = NULL; \
2359 PL_laststatval = -1; \
2360 PL_laststype = OP_STAT; \
2361 PL_mess_sv = Nullsv; \
2362 PL_splitstr = " "; \
2363 PL_generation = 100; \
2364 PL_exitlist = NULL; \
2365 PL_exitlistlen = 0; \
2367 PL_in_clean_objs = FALSE; \
2368 PL_in_clean_all = FALSE; \
2369 PL_profiledata = NULL; \
2371 PL_rsfp_filters = Nullav; \
2376 # ifdef MULTIPLICITY
2377 # define PERLVAR(var,type)
2378 # define PERLVARA(var,n,type)
2379 # if defined(PERL_IMPLICIT_CONTEXT)
2380 # if defined(USE_THREADS)
2381 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2382 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2383 # else /* !USE_THREADS */
2384 # define PERLVARI(var,type,init) aTHX->var = init;
2385 # define PERLVARIC(var,type,init) aTHX->var = init;
2386 # endif /* USE_THREADS */
2388 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2389 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2391 # include "intrpvar.h"
2392 # ifndef USE_THREADS
2393 # include "thrdvar.h"
2400 # define PERLVAR(var,type)
2401 # define PERLVARA(var,n,type)
2402 # define PERLVARI(var,type,init) PL_##var = init;
2403 # define PERLVARIC(var,type,init) PL_##var = init;
2404 # include "intrpvar.h"
2405 # ifndef USE_THREADS
2406 # include "thrdvar.h"
2418 S_init_main_stash(pTHX)
2423 /* Note that strtab is a rather special HV. Assumptions are made
2424 about not iterating on it, and not adding tie magic to it.
2425 It is properly deallocated in perl_destruct() */
2426 PL_strtab = newHV();
2428 MUTEX_INIT(&PL_strtab_mutex);
2430 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2431 hv_ksplit(PL_strtab, 512);
2433 PL_curstash = PL_defstash = newHV();
2434 PL_curstname = newSVpvn("main",4);
2435 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2436 SvREFCNT_dec(GvHV(gv));
2437 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2439 HvNAME(PL_defstash) = savepv("main");
2440 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2441 GvMULTI_on(PL_incgv);
2442 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2443 GvMULTI_on(PL_hintgv);
2444 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2445 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2446 GvMULTI_on(PL_errgv);
2447 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2448 GvMULTI_on(PL_replgv);
2449 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2450 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2451 sv_setpvn(ERRSV, "", 0);
2452 PL_curstash = PL_defstash;
2453 CopSTASH_set(&PL_compiling, PL_defstash);
2454 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2455 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2456 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2457 /* We must init $/ before switches are processed. */
2458 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2462 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2469 PL_origfilename = savepv("-e");
2472 /* if find_script() returns, it returns a malloc()-ed value */
2473 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2475 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2476 char *s = scriptname + 8;
2477 *fdscript = atoi(s);
2481 scriptname = savepv(s + 1);
2482 Safefree(PL_origfilename);
2483 PL_origfilename = scriptname;
2488 CopFILE_set(PL_curcop, PL_origfilename);
2489 if (strEQ(PL_origfilename,"-"))
2491 if (*fdscript >= 0) {
2492 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2493 #if defined(HAS_FCNTL) && defined(F_SETFD)
2495 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2498 else if (PL_preprocess) {
2499 char *cpp_cfg = CPPSTDIN;
2500 SV *cpp = newSVpvn("",0);
2501 SV *cmd = NEWSV(0,0);
2503 if (strEQ(cpp_cfg, "cppstdin"))
2504 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2505 sv_catpv(cpp, cpp_cfg);
2507 sv_catpvn(sv, "-I", 2);
2508 sv_catpv(sv,PRIVLIB_EXP);
2510 #if defined(MSDOS) || defined(WIN32)
2511 Perl_sv_setpvf(aTHX_ cmd, "\
2512 sed %s -e \"/^[^#]/b\" \
2513 -e \"/^#[ ]*include[ ]/b\" \
2514 -e \"/^#[ ]*define[ ]/b\" \
2515 -e \"/^#[ ]*if[ ]/b\" \
2516 -e \"/^#[ ]*ifdef[ ]/b\" \
2517 -e \"/^#[ ]*ifndef[ ]/b\" \
2518 -e \"/^#[ ]*else/b\" \
2519 -e \"/^#[ ]*elif[ ]/b\" \
2520 -e \"/^#[ ]*undef[ ]/b\" \
2521 -e \"/^#[ ]*endif/b\" \
2523 %s | %"SVf" -C %"SVf" %s",
2524 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2527 Perl_sv_setpvf(aTHX_ cmd, "\
2528 %s %s -e '/^[^#]/b' \
2529 -e '/^#[ ]*include[ ]/b' \
2530 -e '/^#[ ]*define[ ]/b' \
2531 -e '/^#[ ]*if[ ]/b' \
2532 -e '/^#[ ]*ifdef[ ]/b' \
2533 -e '/^#[ ]*ifndef[ ]/b' \
2534 -e '/^#[ ]*else/b' \
2535 -e '/^#[ ]*elif[ ]/b' \
2536 -e '/^#[ ]*undef[ ]/b' \
2537 -e '/^#[ ]*endif/b' \
2539 %s | %"SVf" %"SVf" %s",
2541 Perl_sv_setpvf(aTHX_ cmd, "\
2542 %s %s -e '/^[^#]/b' \
2543 -e '/^#[ ]*include[ ]/b' \
2544 -e '/^#[ ]*define[ ]/b' \
2545 -e '/^#[ ]*if[ ]/b' \
2546 -e '/^#[ ]*ifdef[ ]/b' \
2547 -e '/^#[ ]*ifndef[ ]/b' \
2548 -e '/^#[ ]*else/b' \
2549 -e '/^#[ ]*elif[ ]/b' \
2550 -e '/^#[ ]*undef[ ]/b' \
2551 -e '/^#[ ]*endif/b' \
2553 %s | %"SVf" -C %"SVf" %s",
2560 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2562 scriptname, cpp, sv, CPPMINUS);
2563 PL_doextract = FALSE;
2564 #ifdef IAMSUID /* actually, this is caught earlier */
2565 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2567 (void)seteuid(PL_uid); /* musn't stay setuid root */
2570 (void)setreuid((Uid_t)-1, PL_uid);
2572 #ifdef HAS_SETRESUID
2573 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2575 PerlProc_setuid(PL_uid);
2579 if (PerlProc_geteuid() != PL_uid)
2580 Perl_croak(aTHX_ "Can't do seteuid!\n");
2582 #endif /* IAMSUID */
2583 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2587 else if (!*scriptname) {
2588 forbid_setid("program input from stdin");
2589 PL_rsfp = PerlIO_stdin();
2592 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2593 #if defined(HAS_FCNTL) && defined(F_SETFD)
2595 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2600 #ifndef IAMSUID /* in case script is not readable before setuid */
2602 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2603 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2606 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2607 (int)PERL_REVISION, (int)PERL_VERSION,
2608 (int)PERL_SUBVERSION), PL_origargv);
2609 Perl_croak(aTHX_ "Can't do setuid\n");
2613 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2614 CopFILE(PL_curcop), Strerror(errno));
2619 * I_SYSSTATVFS HAS_FSTATVFS
2621 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2622 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2623 * here so that metaconfig picks them up. */
2627 S_fd_on_nosuid_fs(pTHX_ int fd)
2629 int check_okay = 0; /* able to do all the required sys/libcalls */
2630 int on_nosuid = 0; /* the fd is on a nosuid fs */
2632 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2633 * fstatvfs() is UNIX98.
2634 * fstatfs() is 4.3 BSD.
2635 * ustat()+getmnt() is pre-4.3 BSD.
2636 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2637 * an irrelevant filesystem while trying to reach the right one.
2640 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2642 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2643 defined(HAS_FSTATVFS)
2644 # define FD_ON_NOSUID_CHECK_OKAY
2645 struct statvfs stfs;
2647 check_okay = fstatvfs(fd, &stfs) == 0;
2648 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2649 # endif /* fstatvfs */
2651 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2652 defined(PERL_MOUNT_NOSUID) && \
2653 defined(HAS_FSTATFS) && \
2654 defined(HAS_STRUCT_STATFS) && \
2655 defined(HAS_STRUCT_STATFS_F_FLAGS)
2656 # define FD_ON_NOSUID_CHECK_OKAY
2659 check_okay = fstatfs(fd, &stfs) == 0;
2660 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2661 # endif /* fstatfs */
2663 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2664 defined(PERL_MOUNT_NOSUID) && \
2665 defined(HAS_FSTAT) && \
2666 defined(HAS_USTAT) && \
2667 defined(HAS_GETMNT) && \
2668 defined(HAS_STRUCT_FS_DATA) && \
2670 # define FD_ON_NOSUID_CHECK_OKAY
2673 if (fstat(fd, &fdst) == 0) {
2675 if (ustat(fdst.st_dev, &us) == 0) {
2677 /* NOSTAT_ONE here because we're not examining fields which
2678 * vary between that case and STAT_ONE. */
2679 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2680 size_t cmplen = sizeof(us.f_fname);
2681 if (sizeof(fsd.fd_req.path) < cmplen)
2682 cmplen = sizeof(fsd.fd_req.path);
2683 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2684 fdst.st_dev == fsd.fd_req.dev) {
2686 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2692 # endif /* fstat+ustat+getmnt */
2694 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2695 defined(HAS_GETMNTENT) && \
2696 defined(HAS_HASMNTOPT) && \
2697 defined(MNTOPT_NOSUID)
2698 # define FD_ON_NOSUID_CHECK_OKAY
2699 FILE *mtab = fopen("/etc/mtab", "r");
2700 struct mntent *entry;
2701 struct stat stb, fsb;
2703 if (mtab && (fstat(fd, &stb) == 0)) {
2704 while (entry = getmntent(mtab)) {
2705 if (stat(entry->mnt_dir, &fsb) == 0
2706 && fsb.st_dev == stb.st_dev)
2708 /* found the filesystem */
2710 if (hasmntopt(entry, MNTOPT_NOSUID))
2713 } /* A single fs may well fail its stat(). */
2718 # endif /* getmntent+hasmntopt */
2721 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2724 #endif /* IAMSUID */
2727 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2733 /* do we need to emulate setuid on scripts? */
2735 /* This code is for those BSD systems that have setuid #! scripts disabled
2736 * in the kernel because of a security problem. Merely defining DOSUID
2737 * in perl will not fix that problem, but if you have disabled setuid
2738 * scripts in the kernel, this will attempt to emulate setuid and setgid
2739 * on scripts that have those now-otherwise-useless bits set. The setuid
2740 * root version must be called suidperl or sperlN.NNN. If regular perl
2741 * discovers that it has opened a setuid script, it calls suidperl with
2742 * the same argv that it had. If suidperl finds that the script it has
2743 * just opened is NOT setuid root, it sets the effective uid back to the
2744 * uid. We don't just make perl setuid root because that loses the
2745 * effective uid we had before invoking perl, if it was different from the
2748 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2749 * be defined in suidperl only. suidperl must be setuid root. The
2750 * Configure script will set this up for you if you want it.
2757 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2758 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2759 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2764 #ifndef HAS_SETREUID
2765 /* On this access check to make sure the directories are readable,
2766 * there is actually a small window that the user could use to make
2767 * filename point to an accessible directory. So there is a faint
2768 * chance that someone could execute a setuid script down in a
2769 * non-accessible directory. I don't know what to do about that.
2770 * But I don't think it's too important. The manual lies when
2771 * it says access() is useful in setuid programs.
2773 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2774 Perl_croak(aTHX_ "Permission denied");
2776 /* If we can swap euid and uid, then we can determine access rights
2777 * with a simple stat of the file, and then compare device and
2778 * inode to make sure we did stat() on the same file we opened.
2779 * Then we just have to make sure he or she can execute it.
2782 struct stat tmpstatbuf;
2786 setreuid(PL_euid,PL_uid) < 0
2789 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2792 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2793 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2794 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2795 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2796 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2797 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2798 Perl_croak(aTHX_ "Permission denied");
2800 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2801 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2802 (void)PerlIO_close(PL_rsfp);
2803 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2804 PerlIO_printf(PL_rsfp,
2805 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2806 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2807 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2808 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2810 PL_statbuf.st_uid, PL_statbuf.st_gid);
2811 (void)PerlProc_pclose(PL_rsfp);
2813 Perl_croak(aTHX_ "Permission denied\n");
2817 setreuid(PL_uid,PL_euid) < 0
2819 # if defined(HAS_SETRESUID)
2820 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2823 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2824 Perl_croak(aTHX_ "Can't reswap uid and euid");
2825 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2826 Perl_croak(aTHX_ "Permission denied\n");
2828 #endif /* HAS_SETREUID */
2829 #endif /* IAMSUID */
2831 if (!S_ISREG(PL_statbuf.st_mode))
2832 Perl_croak(aTHX_ "Permission denied");
2833 if (PL_statbuf.st_mode & S_IWOTH)
2834 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2835 PL_doswitches = FALSE; /* -s is insecure in suid */
2836 CopLINE_inc(PL_curcop);
2837 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2838 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2839 Perl_croak(aTHX_ "No #! line");
2840 s = SvPV(PL_linestr,n_a)+2;
2842 while (!isSPACE(*s)) s++;
2843 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2844 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2845 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2846 Perl_croak(aTHX_ "Not a perl script");
2847 while (*s == ' ' || *s == '\t') s++;
2849 * #! arg must be what we saw above. They can invoke it by
2850 * mentioning suidperl explicitly, but they may not add any strange
2851 * arguments beyond what #! says if they do invoke suidperl that way.
2853 len = strlen(validarg);
2854 if (strEQ(validarg," PHOOEY ") ||
2855 strnNE(s,validarg,len) || !isSPACE(s[len]))
2856 Perl_croak(aTHX_ "Args must match #! line");
2859 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2860 PL_euid == PL_statbuf.st_uid)
2862 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2863 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2864 #endif /* IAMSUID */
2866 if (PL_euid) { /* oops, we're not the setuid root perl */
2867 (void)PerlIO_close(PL_rsfp);
2870 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2871 (int)PERL_REVISION, (int)PERL_VERSION,
2872 (int)PERL_SUBVERSION), PL_origargv);
2874 Perl_croak(aTHX_ "Can't do setuid\n");
2877 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2879 (void)setegid(PL_statbuf.st_gid);
2882 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2884 #ifdef HAS_SETRESGID
2885 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2887 PerlProc_setgid(PL_statbuf.st_gid);
2891 if (PerlProc_getegid() != PL_statbuf.st_gid)
2892 Perl_croak(aTHX_ "Can't do setegid!\n");
2894 if (PL_statbuf.st_mode & S_ISUID) {
2895 if (PL_statbuf.st_uid != PL_euid)
2897 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2900 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2902 #ifdef HAS_SETRESUID
2903 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2905 PerlProc_setuid(PL_statbuf.st_uid);
2909 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2910 Perl_croak(aTHX_ "Can't do seteuid!\n");
2912 else if (PL_uid) { /* oops, mustn't run as root */
2914 (void)seteuid((Uid_t)PL_uid);
2917 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2919 #ifdef HAS_SETRESUID
2920 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2922 PerlProc_setuid((Uid_t)PL_uid);
2926 if (PerlProc_geteuid() != PL_uid)
2927 Perl_croak(aTHX_ "Can't do seteuid!\n");
2930 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2931 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2934 else if (PL_preprocess)
2935 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2936 else if (fdscript >= 0)
2937 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2939 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2941 /* We absolutely must clear out any saved ids here, so we */
2942 /* exec the real perl, substituting fd script for scriptname. */
2943 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2944 PerlIO_rewind(PL_rsfp);
2945 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2946 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2947 if (!PL_origargv[which])
2948 Perl_croak(aTHX_ "Permission denied");
2949 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2950 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2951 #if defined(HAS_FCNTL) && defined(F_SETFD)
2952 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2954 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2955 (int)PERL_REVISION, (int)PERL_VERSION,
2956 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2957 Perl_croak(aTHX_ "Can't do setuid\n");
2958 #endif /* IAMSUID */
2960 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2961 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2963 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2964 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2966 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2969 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2970 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2971 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2972 /* not set-id, must be wrapped */
2978 S_find_beginning(pTHX)
2980 register char *s, *s2;
2982 /* skip forward in input to the real script? */
2985 while (PL_doextract) {
2986 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2987 Perl_croak(aTHX_ "No Perl script found in input\n");
2988 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2989 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2990 PL_doextract = FALSE;
2991 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2993 while (*s == ' ' || *s == '\t') s++;
2995 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2996 if (strnEQ(s2-4,"perl",4))
2998 while ((s = moreswitches(s)))
3009 PL_uid = PerlProc_getuid();
3010 PL_euid = PerlProc_geteuid();
3011 PL_gid = PerlProc_getgid();
3012 PL_egid = PerlProc_getegid();
3014 PL_uid |= PL_gid << 16;
3015 PL_euid |= PL_egid << 16;
3017 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3021 S_forbid_setid(pTHX_ char *s)
3023 if (PL_euid != PL_uid)
3024 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3025 if (PL_egid != PL_gid)
3026 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3030 Perl_init_debugger(pTHX)
3033 HV *ostash = PL_curstash;
3035 PL_curstash = PL_debstash;
3036 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3037 AvREAL_off(PL_dbargs);
3038 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3039 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3040 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3041 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3042 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3043 sv_setiv(PL_DBsingle, 0);
3044 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3045 sv_setiv(PL_DBtrace, 0);
3046 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3047 sv_setiv(PL_DBsignal, 0);
3048 PL_curstash = ostash;
3051 #ifndef STRESS_REALLOC
3052 #define REASONABLE(size) (size)
3054 #define REASONABLE(size) (1) /* unreasonable */
3058 Perl_init_stacks(pTHX)
3060 /* start with 128-item stack and 8K cxstack */
3061 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3062 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3063 PL_curstackinfo->si_type = PERLSI_MAIN;
3064 PL_curstack = PL_curstackinfo->si_stack;
3065 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3067 PL_stack_base = AvARRAY(PL_curstack);
3068 PL_stack_sp = PL_stack_base;
3069 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3071 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3074 PL_tmps_max = REASONABLE(128);
3076 New(54,PL_markstack,REASONABLE(32),I32);
3077 PL_markstack_ptr = PL_markstack;
3078 PL_markstack_max = PL_markstack + REASONABLE(32);
3082 New(54,PL_scopestack,REASONABLE(32),I32);
3083 PL_scopestack_ix = 0;
3084 PL_scopestack_max = REASONABLE(32);
3086 New(54,PL_savestack,REASONABLE(128),ANY);
3087 PL_savestack_ix = 0;
3088 PL_savestack_max = REASONABLE(128);
3090 New(54,PL_retstack,REASONABLE(16),OP*);
3092 PL_retstack_max = REASONABLE(16);
3101 while (PL_curstackinfo->si_next)
3102 PL_curstackinfo = PL_curstackinfo->si_next;
3103 while (PL_curstackinfo) {
3104 PERL_SI *p = PL_curstackinfo->si_prev;
3105 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3106 Safefree(PL_curstackinfo->si_cxstack);
3107 Safefree(PL_curstackinfo);
3108 PL_curstackinfo = p;
3110 Safefree(PL_tmps_stack);
3111 Safefree(PL_markstack);
3112 Safefree(PL_scopestack);
3113 Safefree(PL_savestack);
3114 Safefree(PL_retstack);
3118 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3129 lex_start(PL_linestr);
3131 PL_subname = newSVpvn("main",4);
3135 S_init_predump_symbols(pTHX)
3141 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3142 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3143 GvMULTI_on(PL_stdingv);
3144 io = GvIOp(PL_stdingv);
3145 IoIFP(io) = PerlIO_stdin();
3146 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3148 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3150 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3153 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3155 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3157 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3159 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3160 GvMULTI_on(PL_stderrgv);
3161 io = GvIOp(PL_stderrgv);
3162 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3163 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3165 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3167 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3170 PL_osname = savepv(OSNAME);
3174 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3181 argc--,argv++; /* skip name of script */
3182 if (PL_doswitches) {
3183 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3186 if (argv[0][1] == '-' && !argv[0][2]) {
3190 if ((s = strchr(argv[0], '='))) {
3192 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3195 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3198 PL_toptarget = NEWSV(0,0);
3199 sv_upgrade(PL_toptarget, SVt_PVFM);
3200 sv_setpvn(PL_toptarget, "", 0);
3201 PL_bodytarget = NEWSV(0,0);
3202 sv_upgrade(PL_bodytarget, SVt_PVFM);
3203 sv_setpvn(PL_bodytarget, "", 0);
3204 PL_formtarget = PL_bodytarget;
3207 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3208 sv_setpv(GvSV(tmpgv),PL_origfilename);
3209 magicname("0", "0", 1);
3211 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3213 sv_setpv(GvSV(tmpgv), os2_execname());
3215 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3217 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3218 GvMULTI_on(PL_argvgv);
3219 (void)gv_AVadd(PL_argvgv);
3220 av_clear(GvAVn(PL_argvgv));
3221 for (; argc > 0; argc--,argv++) {
3222 SV *sv = newSVpv(argv[0],0);
3223 av_push(GvAVn(PL_argvgv),sv);
3224 if (PL_widesyscalls)
3225 (void)sv_utf8_decode(sv);
3228 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3230 GvMULTI_on(PL_envgv);
3231 hv = GvHVn(PL_envgv);
3232 hv_magic(hv, PL_envgv, 'E');
3233 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
3234 /* Note that if the supplied env parameter is actually a copy
3235 of the global environ then it may now point to free'd memory
3236 if the environment has been modified since. To avoid this
3237 problem we treat env==NULL as meaning 'use the default'
3242 environ[0] = Nullch;
3243 for (; *env; env++) {
3244 if (!(s = strchr(*env,'=')))
3250 sv = newSVpv(s--,0);
3251 (void)hv_store(hv, *env, s - *env, sv, 0);
3253 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3254 /* Sins of the RTL. See note in my_setenv(). */
3255 (void)PerlEnv_putenv(savepv(*env));
3259 #ifdef DYNAMIC_ENV_FETCH
3260 HvNAME(hv) = savepv(ENV_HV_NAME);
3264 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3265 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3269 S_init_perllib(pTHX)
3274 s = PerlEnv_getenv("PERL5LIB");
3276 incpush(s, TRUE, TRUE);
3278 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3280 /* Treat PERL5?LIB as a possible search list logical name -- the
3281 * "natural" VMS idiom for a Unix path string. We allow each
3282 * element to be a set of |-separated directories for compatibility.
3286 if (my_trnlnm("PERL5LIB",buf,0))
3287 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3289 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3293 /* Use the ~-expanded versions of APPLLIB (undocumented),
3294 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3297 incpush(APPLLIB_EXP, TRUE, TRUE);
3301 incpush(ARCHLIB_EXP, FALSE, FALSE);
3304 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3307 incpush(PRIVLIB_EXP, TRUE, FALSE);
3309 incpush(PRIVLIB_EXP, FALSE, FALSE);
3313 /* sitearch is always relative to sitelib on Windows for
3314 * DLL-based path intuition to work correctly */
3315 # if !defined(WIN32)
3316 incpush(SITEARCH_EXP, FALSE, FALSE);
3322 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3324 incpush(SITELIB_EXP, FALSE, FALSE);
3328 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3329 incpush(SITELIB_STEM, FALSE, TRUE);
3332 #ifdef PERL_VENDORARCH_EXP
3333 /* vendorarch is always relative to vendorlib on Windows for
3334 * DLL-based path intuition to work correctly */
3335 # if !defined(WIN32)
3336 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3340 #ifdef PERL_VENDORLIB_EXP
3342 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3344 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3348 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3349 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3352 #ifdef PERL_OTHERLIBDIRS
3353 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3357 incpush(".", FALSE, FALSE);
3361 # define PERLLIB_SEP ';'
3364 # define PERLLIB_SEP '|'
3366 # define PERLLIB_SEP ':'
3369 #ifndef PERLLIB_MANGLE
3370 # define PERLLIB_MANGLE(s,n) (s)
3374 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3376 SV *subdir = Nullsv;
3381 if (addsubdirs || addoldvers) {
3382 subdir = sv_newmortal();
3385 /* Break at all separators */
3387 SV *libdir = NEWSV(55,0);
3390 /* skip any consecutive separators */
3391 while ( *p == PERLLIB_SEP ) {
3392 /* Uncomment the next line for PATH semantics */
3393 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3397 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3398 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3403 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3404 p = Nullch; /* break out */
3408 * BEFORE pushing libdir onto @INC we may first push version- and
3409 * archname-specific sub-directories.
3411 if (addsubdirs || addoldvers) {
3412 #ifdef PERL_INC_VERSION_LIST
3413 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3414 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3415 const char **incver;
3417 struct stat tmpstatbuf;
3422 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3424 while (unix[len-1] == '/') len--; /* Cosmetic */
3425 sv_usepvn(libdir,unix,len);
3428 PerlIO_printf(Perl_error_log,
3429 "Failed to unixify @INC element \"%s\"\n",
3433 /* .../version/archname if -d .../version/archname */
3434 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s",
3436 (int)PERL_REVISION, (int)PERL_VERSION,
3437 (int)PERL_SUBVERSION, ARCHNAME);
3438 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3439 S_ISDIR(tmpstatbuf.st_mode))
3440 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3442 /* .../version if -d .../version */
3443 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir,
3444 (int)PERL_REVISION, (int)PERL_VERSION,
3445 (int)PERL_SUBVERSION);
3446 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3447 S_ISDIR(tmpstatbuf.st_mode))
3448 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3450 /* .../archname if -d .../archname */
3451 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME);
3452 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3453 S_ISDIR(tmpstatbuf.st_mode))
3454 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3457 #ifdef PERL_INC_VERSION_LIST
3459 for (incver = incverlist; *incver; incver++) {
3460 /* .../xxx if -d .../xxx */
3461 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver);
3462 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3463 S_ISDIR(tmpstatbuf.st_mode))
3464 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3470 /* finally push this lib directory on the end of @INC */
3471 av_push(GvAVn(PL_incgv), libdir);
3476 STATIC struct perl_thread *
3477 S_init_main_thread(pTHX)
3479 #if !defined(PERL_IMPLICIT_CONTEXT)
3480 struct perl_thread *thr;
3484 Newz(53, thr, 1, struct perl_thread);
3485 PL_curcop = &PL_compiling;
3486 thr->interp = PERL_GET_INTERP;
3487 thr->cvcache = newHV();
3488 thr->threadsv = newAV();
3489 /* thr->threadsvp is set when find_threadsv is called */
3490 thr->specific = newAV();
3491 thr->flags = THRf_R_JOINABLE;
3492 MUTEX_INIT(&thr->mutex);
3493 /* Handcraft thrsv similarly to mess_sv */
3494 New(53, PL_thrsv, 1, SV);
3495 Newz(53, xpv, 1, XPV);
3496 SvFLAGS(PL_thrsv) = SVt_PV;
3497 SvANY(PL_thrsv) = (void*)xpv;
3498 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3499 SvPVX(PL_thrsv) = (char*)thr;
3500 SvCUR_set(PL_thrsv, sizeof(thr));
3501 SvLEN_set(PL_thrsv, sizeof(thr));
3502 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3503 thr->oursv = PL_thrsv;
3504 PL_chopset = " \n-";
3507 MUTEX_LOCK(&PL_threads_mutex);
3512 MUTEX_UNLOCK(&PL_threads_mutex);
3514 #ifdef HAVE_THREAD_INTERN
3515 Perl_init_thread_intern(thr);
3518 #ifdef SET_THREAD_SELF
3519 SET_THREAD_SELF(thr);
3521 thr->self = pthread_self();
3522 #endif /* SET_THREAD_SELF */
3526 * These must come after the SET_THR because sv_setpvn does
3527 * SvTAINT and the taint fields require dTHR.
3529 PL_toptarget = NEWSV(0,0);
3530 sv_upgrade(PL_toptarget, SVt_PVFM);
3531 sv_setpvn(PL_toptarget, "", 0);
3532 PL_bodytarget = NEWSV(0,0);
3533 sv_upgrade(PL_bodytarget, SVt_PVFM);
3534 sv_setpvn(PL_bodytarget, "", 0);
3535 PL_formtarget = PL_bodytarget;
3536 thr->errsv = newSVpvn("", 0);
3537 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3540 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3541 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3542 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3543 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3544 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3546 PL_reginterp_cnt = 0;
3550 #endif /* USE_THREADS */
3553 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3557 line_t oldline = CopLINE(PL_curcop);
3563 while (AvFILL(paramList) >= 0) {
3564 cv = (CV*)av_shift(paramList);
3566 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3567 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3573 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3577 (void)SvPV(atsv, len);
3580 PL_curcop = &PL_compiling;
3581 CopLINE_set(PL_curcop, oldline);
3582 if (paramList == PL_beginav)
3583 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3585 Perl_sv_catpvf(aTHX_ atsv,
3586 "%s failed--call queue aborted",
3587 paramList == PL_checkav ? "CHECK"
3588 : paramList == PL_initav ? "INIT"
3590 while (PL_scopestack_ix > oldscope)
3593 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3600 /* my_exit() was called */
3601 while (PL_scopestack_ix > oldscope)
3604 PL_curstash = PL_defstash;
3605 PL_curcop = &PL_compiling;
3606 CopLINE_set(PL_curcop, oldline);
3608 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3609 if (paramList == PL_beginav)
3610 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3612 Perl_croak(aTHX_ "%s failed--call queue aborted",
3613 paramList == PL_checkav ? "CHECK"
3614 : paramList == PL_initav ? "INIT"
3621 PL_curcop = &PL_compiling;
3622 CopLINE_set(PL_curcop, oldline);
3625 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3633 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3635 S_vcall_list_body(pTHX_ va_list args)
3637 CV *cv = va_arg(args, CV*);
3638 return call_list_body(cv);
3643 S_call_list_body(pTHX_ CV *cv)
3645 PUSHMARK(PL_stack_sp);
3646 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3651 Perl_my_exit(pTHX_ U32 status)
3655 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3656 thr, (unsigned long) status));
3665 STATUS_NATIVE_SET(status);
3672 Perl_my_failure_exit(pTHX)
3675 if (vaxc$errno & 1) {
3676 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3677 STATUS_NATIVE_SET(44);
3680 if (!vaxc$errno && errno) /* unlikely */
3681 STATUS_NATIVE_SET(44);
3683 STATUS_NATIVE_SET(vaxc$errno);
3688 STATUS_POSIX_SET(errno);
3690 exitstatus = STATUS_POSIX >> 8;
3691 if (exitstatus & 255)
3692 STATUS_POSIX_SET(exitstatus);
3694 STATUS_POSIX_SET(255);
3701 S_my_exit_jump(pTHX)
3704 register PERL_CONTEXT *cx;
3709 SvREFCNT_dec(PL_e_script);
3710 PL_e_script = Nullsv;
3713 POPSTACK_TO(PL_mainstack);
3714 if (cxstack_ix >= 0) {
3717 POPBLOCK(cx,PL_curpm);
3729 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3732 p = SvPVX(PL_e_script);
3733 nl = strchr(p, '\n');
3734 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3736 filter_del(read_e_script);
3739 sv_catpvn(buf_sv, p, nl-p);
3740 sv_chop(PL_e_script, nl);