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 */
1579 XPUSHs(sv_2mortal(newSVpv(methname,0)));
1584 return call_sv(*PL_stack_sp--, flags);
1587 /* May be called with any of a CV, a GV, or an SV containing the name. */
1589 =for apidoc p||call_sv
1591 Performs a callback to the Perl sub whose name is in the SV. See
1598 Perl_call_sv(pTHX_ SV *sv, I32 flags)
1600 /* See G_* flags in cop.h */
1603 LOGOP myop; /* fake syntax tree node */
1607 bool oldcatch = CATCH_GET;
1612 if (flags & G_DISCARD) {
1617 Zero(&myop, 1, LOGOP);
1618 myop.op_next = Nullop;
1619 if (!(flags & G_NOARGS))
1620 myop.op_flags |= OPf_STACKED;
1621 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1622 (flags & G_ARRAY) ? OPf_WANT_LIST :
1627 EXTEND(PL_stack_sp, 1);
1628 *++PL_stack_sp = sv;
1630 oldscope = PL_scopestack_ix;
1632 if (PERLDB_SUB && PL_curstash != PL_debstash
1633 /* Handle first BEGIN of -d. */
1634 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
1635 /* Try harder, since this may have been a sighandler, thus
1636 * curstash may be meaningless. */
1637 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
1638 && !(flags & G_NODEBUG))
1639 PL_op->op_private |= OPpENTERSUB_DB;
1641 if (!(flags & G_EVAL)) {
1643 call_body((OP*)&myop, FALSE);
1644 retval = PL_stack_sp - (PL_stack_base + oldmark);
1645 CATCH_SET(oldcatch);
1648 cLOGOP->op_other = PL_op;
1650 /* we're trying to emulate pp_entertry() here */
1652 register PERL_CONTEXT *cx;
1653 I32 gimme = GIMME_V;
1658 push_return(PL_op->op_next);
1659 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
1661 PL_eval_root = PL_op; /* Only needed so that goto works right. */
1663 PL_in_eval = EVAL_INEVAL;
1664 if (flags & G_KEEPERR)
1665 PL_in_eval |= EVAL_KEEPERR;
1671 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1673 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1680 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1682 call_body((OP*)&myop, FALSE);
1684 retval = PL_stack_sp - (PL_stack_base + oldmark);
1685 if (!(flags & G_KEEPERR))
1692 /* my_exit() was called */
1693 PL_curstash = PL_defstash;
1696 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1697 Perl_croak(aTHX_ "Callback called exit");
1702 PL_op = PL_restartop;
1706 PL_stack_sp = PL_stack_base + oldmark;
1707 if (flags & G_ARRAY)
1711 *++PL_stack_sp = &PL_sv_undef;
1716 if (PL_scopestack_ix > oldscope) {
1720 register PERL_CONTEXT *cx;
1732 if (flags & G_DISCARD) {
1733 PL_stack_sp = PL_stack_base + oldmark;
1742 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1744 S_vcall_body(pTHX_ va_list args)
1746 OP *myop = va_arg(args, OP*);
1747 int is_eval = va_arg(args, int);
1749 call_body(myop, is_eval);
1755 S_call_body(pTHX_ OP *myop, int is_eval)
1759 if (PL_op == myop) {
1761 PL_op = Perl_pp_entereval(aTHX);
1763 PL_op = Perl_pp_entersub(aTHX);
1769 /* Eval a string. The G_EVAL flag is always assumed. */
1772 =for apidoc p||eval_sv
1774 Tells Perl to C<eval> the string in the SV.
1780 Perl_eval_sv(pTHX_ SV *sv, I32 flags)
1782 /* See G_* flags in cop.h */
1785 UNOP myop; /* fake syntax tree node */
1786 I32 oldmark = SP - PL_stack_base;
1793 if (flags & G_DISCARD) {
1800 Zero(PL_op, 1, UNOP);
1801 EXTEND(PL_stack_sp, 1);
1802 *++PL_stack_sp = sv;
1803 oldscope = PL_scopestack_ix;
1805 if (!(flags & G_NOARGS))
1806 myop.op_flags = OPf_STACKED;
1807 myop.op_next = Nullop;
1808 myop.op_type = OP_ENTEREVAL;
1809 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1810 (flags & G_ARRAY) ? OPf_WANT_LIST :
1812 if (flags & G_KEEPERR)
1813 myop.op_flags |= OPf_SPECIAL;
1815 #ifdef PERL_FLEXIBLE_EXCEPTIONS
1817 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
1824 #ifndef PERL_FLEXIBLE_EXCEPTIONS
1826 call_body((OP*)&myop,TRUE);
1828 retval = PL_stack_sp - (PL_stack_base + oldmark);
1829 if (!(flags & G_KEEPERR))
1836 /* my_exit() was called */
1837 PL_curstash = PL_defstash;
1840 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
1841 Perl_croak(aTHX_ "Callback called exit");
1846 PL_op = PL_restartop;
1850 PL_stack_sp = PL_stack_base + oldmark;
1851 if (flags & G_ARRAY)
1855 *++PL_stack_sp = &PL_sv_undef;
1861 if (flags & G_DISCARD) {
1862 PL_stack_sp = PL_stack_base + oldmark;
1872 =for apidoc p||eval_pv
1874 Tells Perl to C<eval> the given string and return an SV* result.
1880 Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
1883 SV* sv = newSVpv(p, 0);
1886 eval_sv(sv, G_SCALAR);
1893 if (croak_on_error && SvTRUE(ERRSV)) {
1895 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
1901 /* Require a module. */
1904 =for apidoc p||require_pv
1906 Tells Perl to C<require> a module.
1912 Perl_require_pv(pTHX_ const char *pv)
1916 PUSHSTACKi(PERLSI_REQUIRE);
1918 sv = sv_newmortal();
1919 sv_setpv(sv, "require '");
1922 eval_sv(sv, G_DISCARD);
1928 Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
1932 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
1933 sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
1937 S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
1939 /* This message really ought to be max 23 lines.
1940 * Removed -h because the user already knows that opton. Others? */
1942 static char *usage_msg[] = {
1943 "-0[octal] specify record separator (\\0, if no argument)",
1944 "-a autosplit mode with -n or -p (splits $_ into @F)",
1945 "-C enable native wide character system interfaces",
1946 "-c check syntax only (runs BEGIN and CHECK blocks)",
1947 "-d[:debugger] run program under debugger",
1948 "-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
1949 "-e 'command' one line of program (several -e's allowed, omit programfile)",
1950 "-F/pattern/ split() pattern for -a switch (//'s are optional)",
1951 "-i[extension] edit <> files in place (makes backup if extension supplied)",
1952 "-Idirectory specify @INC/#include directory (several -I's allowed)",
1953 "-l[octal] enable line ending processing, specifies line terminator",
1954 "-[mM][-]module execute `use/no module...' before executing program",
1955 "-n assume 'while (<>) { ... }' loop around program",
1956 "-p assume loop like -n but print line also, like sed",
1957 "-P run program through C preprocessor before compilation",
1958 "-s enable rudimentary parsing for switches after programfile",
1959 "-S look for programfile using PATH environment variable",
1960 "-T enable tainting checks",
1961 "-u dump core after parsing program",
1962 "-U allow unsafe operations",
1963 "-v print version, subversion (includes VERY IMPORTANT perl info)",
1964 "-V[:variable] print configuration summary (or a single Config.pm variable)",
1965 "-w enable many useful warnings (RECOMMENDED)",
1966 "-W enable all warnings",
1967 "-X disable all warnings",
1968 "-x[directory] strip off text before #!perl line and perhaps cd to directory",
1972 char **p = usage_msg;
1974 PerlIO_printf(PerlIO_stdout(),
1975 "\nUsage: %s [switches] [--] [programfile] [arguments]",
1978 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
1981 /* This routine handles any switches that can be given during run */
1984 Perl_moreswitches(pTHX_ char *s)
1993 numlen = 0; /* disallow underscores */
1994 rschar = (U32)scan_oct(s, 4, &numlen);
1995 SvREFCNT_dec(PL_nrs);
1996 if (rschar & ~((U8)~0))
1997 PL_nrs = &PL_sv_undef;
1998 else if (!rschar && numlen >= 2)
1999 PL_nrs = newSVpvn("", 0);
2002 PL_nrs = newSVpvn(&ch, 1);
2007 PL_widesyscalls = TRUE;
2012 PL_splitstr = savepv(s + 1);
2026 if (*s == ':' || *s == '=') {
2027 my_setenv("PERL5DB", Perl_form(aTHX_ "use Devel::%s;", ++s));
2031 PL_perldb = PERLDB_ALL;
2039 if (isALPHA(s[1])) {
2040 static char debopts[] = "psltocPmfrxuLHXDS";
2043 for (s++; *s && (d = strchr(debopts,*s)); s++)
2044 PL_debug |= 1 << (d - debopts);
2047 PL_debug = atoi(s+1);
2048 for (s++; isDIGIT(*s); s++) ;
2050 PL_debug |= 0x80000000;
2053 if (ckWARN_d(WARN_DEBUGGING))
2054 Perl_warner(aTHX_ WARN_DEBUGGING,
2055 "Recompile perl with -DDEBUGGING to use -D switch\n");
2056 for (s++; isALNUM(*s); s++) ;
2062 usage(PL_origargv[0]);
2066 Safefree(PL_inplace);
2067 PL_inplace = savepv(s+1);
2069 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
2072 if (*s == '-') /* Additional switches on #! line. */
2076 case 'I': /* -I handled both here and in parse_perl() */
2079 while (*s && isSPACE(*s))
2084 /* ignore trailing spaces (possibly followed by other switches) */
2086 for (e = p; *e && !isSPACE(*e); e++) ;
2090 } while (*p && *p != '-');
2091 e = savepvn(s, e-s);
2092 incpush(e, TRUE, TRUE);
2099 Perl_croak(aTHX_ "No directory specified for -I");
2107 PL_ors = savepv("\n");
2109 numlen = 0; /* disallow underscores */
2110 *PL_ors = (char)scan_oct(s, 3 + (*s == '0'), &numlen);
2115 if (RsPARA(PL_nrs)) {
2120 PL_ors = SvPV(PL_nrs, PL_orslen);
2121 PL_ors = savepvn(PL_ors, PL_orslen);
2125 forbid_setid("-M"); /* XXX ? */
2128 forbid_setid("-m"); /* XXX ? */
2133 /* -M-foo == 'no foo' */
2134 if (*s == '-') { use = "no "; ++s; }
2135 sv = newSVpv(use,0);
2137 /* We allow -M'Module qw(Foo Bar)' */
2138 while(isALNUM(*s) || *s==':') ++s;
2140 sv_catpv(sv, start);
2141 if (*(start-1) == 'm') {
2143 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
2144 sv_catpv( sv, " ()");
2148 Perl_croak(aTHX_ "Module name required with -%c option",
2150 sv_catpvn(sv, start, s-start);
2151 sv_catpv(sv, " split(/,/,q{");
2157 PL_preambleav = newAV();
2158 av_push(PL_preambleav, sv);
2161 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
2173 PL_doswitches = TRUE;
2178 Perl_croak(aTHX_ "Too late for \"-T\" option");
2182 PL_do_undump = TRUE;
2190 PerlIO_printf(PerlIO_stdout(),
2191 Perl_form(aTHX_ "\nThis is perl, v%vd built for %s",
2192 PL_patchlevel, ARCHNAME));
2193 #if defined(LOCAL_PATCH_COUNT)
2194 if (LOCAL_PATCH_COUNT > 0)
2195 PerlIO_printf(PerlIO_stdout(),
2196 "\n(with %d registered patch%s, "
2197 "see perl -V for more detail)",
2198 (int)LOCAL_PATCH_COUNT,
2199 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
2202 PerlIO_printf(PerlIO_stdout(),
2203 "\n\nCopyright 1987-2000, Larry Wall\n");
2205 PerlIO_printf(PerlIO_stdout(),
2206 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
2209 PerlIO_printf(PerlIO_stdout(),
2210 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2211 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
2214 PerlIO_printf(PerlIO_stdout(),
2215 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
2216 "Version 5 port Copyright (c) 1994-1999, Andreas Kaiser, Ilya Zakharevich\n");
2219 PerlIO_printf(PerlIO_stdout(),
2220 "atariST series port, ++jrb bammi@cadence.com\n");
2223 PerlIO_printf(PerlIO_stdout(),
2224 "BeOS port Copyright Tom Spindler, 1997-1999\n");
2227 PerlIO_printf(PerlIO_stdout(),
2228 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-1999\n");
2231 PerlIO_printf(PerlIO_stdout(),
2232 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
2235 PerlIO_printf(PerlIO_stdout(),
2236 "Stratus VOS port by Paul_Green@stratus.com, 1997-1999\n");
2239 PerlIO_printf(PerlIO_stdout(),
2240 "VM/ESA port by Neale Ferguson, 1998-1999\n");
2243 PerlIO_printf(PerlIO_stdout(),
2244 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
2247 PerlIO_printf(PerlIO_stdout(),
2248 "MiNT port by Guido Flohr, 1997-1999\n");
2251 PerlIO_printf(PerlIO_stdout(),
2252 "EPOC port by Olaf Flebbe, 1999-2000\n");
2254 #ifdef BINARY_BUILD_NOTICE
2255 BINARY_BUILD_NOTICE;
2257 PerlIO_printf(PerlIO_stdout(),
2259 Perl may be copied only under the terms of either the Artistic License or the\n\
2260 GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n\
2261 Complete documentation for Perl, including FAQ lists, should be found on\n\
2262 this system using `man perl' or `perldoc perl'. If you have access to the\n\
2263 Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
2266 if (! (PL_dowarn & G_WARN_ALL_MASK))
2267 PL_dowarn |= G_WARN_ON;
2271 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
2272 PL_compiling.cop_warnings = pWARN_ALL ;
2276 PL_dowarn = G_WARN_ALL_OFF;
2277 PL_compiling.cop_warnings = pWARN_NONE ;
2282 if (s[1] == '-') /* Additional switches on #! line. */
2287 #if defined(WIN32) || !defined(PERL_STRICT_CR)
2293 #ifdef ALTERNATE_SHEBANG
2294 case 'S': /* OS/2 needs -S on "extproc" line. */
2302 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
2307 /* compliments of Tom Christiansen */
2309 /* unexec() can be found in the Gnu emacs distribution */
2310 /* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
2313 Perl_my_unexec(pTHX)
2321 prog = newSVpv(BIN_EXP, 0);
2322 sv_catpv(prog, "/perl");
2323 file = newSVpv(PL_origfilename, 0);
2324 sv_catpv(file, ".perldump");
2326 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2327 /* unexec prints msg to stderr in case of failure */
2328 PerlProc_exit(status);
2331 # include <lib$routines.h>
2332 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
2334 ABORT(); /* for use with undump */
2339 /* initialize curinterp */
2344 #ifdef PERL_OBJECT /* XXX kludge */
2347 PL_chopset = " \n-"; \
2348 PL_copline = NOLINE; \
2349 PL_curcop = &PL_compiling;\
2350 PL_curcopdb = NULL; \
2352 PL_dumpindent = 4; \
2353 PL_laststatval = -1; \
2354 PL_laststype = OP_STAT; \
2355 PL_maxscream = -1; \
2356 PL_maxsysfd = MAXSYSFD; \
2357 PL_statname = Nullsv; \
2358 PL_tmps_floor = -1; \
2360 PL_op_mask = NULL; \
2361 PL_laststatval = -1; \
2362 PL_laststype = OP_STAT; \
2363 PL_mess_sv = Nullsv; \
2364 PL_splitstr = " "; \
2365 PL_generation = 100; \
2366 PL_exitlist = NULL; \
2367 PL_exitlistlen = 0; \
2369 PL_in_clean_objs = FALSE; \
2370 PL_in_clean_all = FALSE; \
2371 PL_profiledata = NULL; \
2373 PL_rsfp_filters = Nullav; \
2378 # ifdef MULTIPLICITY
2379 # define PERLVAR(var,type)
2380 # define PERLVARA(var,n,type)
2381 # if defined(PERL_IMPLICIT_CONTEXT)
2382 # if defined(USE_THREADS)
2383 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2384 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2385 # else /* !USE_THREADS */
2386 # define PERLVARI(var,type,init) aTHX->var = init;
2387 # define PERLVARIC(var,type,init) aTHX->var = init;
2388 # endif /* USE_THREADS */
2390 # define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2391 # define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
2393 # include "intrpvar.h"
2394 # ifndef USE_THREADS
2395 # include "thrdvar.h"
2402 # define PERLVAR(var,type)
2403 # define PERLVARA(var,n,type)
2404 # define PERLVARI(var,type,init) PL_##var = init;
2405 # define PERLVARIC(var,type,init) PL_##var = init;
2406 # include "intrpvar.h"
2407 # ifndef USE_THREADS
2408 # include "thrdvar.h"
2420 S_init_main_stash(pTHX)
2425 /* Note that strtab is a rather special HV. Assumptions are made
2426 about not iterating on it, and not adding tie magic to it.
2427 It is properly deallocated in perl_destruct() */
2428 PL_strtab = newHV();
2430 MUTEX_INIT(&PL_strtab_mutex);
2432 HvSHAREKEYS_off(PL_strtab); /* mandatory */
2433 hv_ksplit(PL_strtab, 512);
2435 PL_curstash = PL_defstash = newHV();
2436 PL_curstname = newSVpvn("main",4);
2437 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2438 SvREFCNT_dec(GvHV(gv));
2439 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
2441 HvNAME(PL_defstash) = savepv("main");
2442 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2443 GvMULTI_on(PL_incgv);
2444 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2445 GvMULTI_on(PL_hintgv);
2446 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2447 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2448 GvMULTI_on(PL_errgv);
2449 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2450 GvMULTI_on(PL_replgv);
2451 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
2452 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2453 sv_setpvn(ERRSV, "", 0);
2454 PL_curstash = PL_defstash;
2455 CopSTASH_set(&PL_compiling, PL_defstash);
2456 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
2457 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
2458 PL_nullstash = GvHV(gv_fetchpv("<none>::", GV_ADDMULTI, SVt_PVHV));
2459 /* We must init $/ before switches are processed. */
2460 sv_setpvn(get_sv("/", TRUE), "\n", 1);
2464 S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
2471 PL_origfilename = savepv("-e");
2474 /* if find_script() returns, it returns a malloc()-ed value */
2475 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
2477 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2478 char *s = scriptname + 8;
2479 *fdscript = atoi(s);
2483 scriptname = savepv(s + 1);
2484 Safefree(PL_origfilename);
2485 PL_origfilename = scriptname;
2490 CopFILE_set(PL_curcop, PL_origfilename);
2491 if (strEQ(PL_origfilename,"-"))
2493 if (*fdscript >= 0) {
2494 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
2495 #if defined(HAS_FCNTL) && defined(F_SETFD)
2497 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2500 else if (PL_preprocess) {
2501 char *cpp_cfg = CPPSTDIN;
2502 SV *cpp = newSVpvn("",0);
2503 SV *cmd = NEWSV(0,0);
2505 if (strEQ(cpp_cfg, "cppstdin"))
2506 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
2507 sv_catpv(cpp, cpp_cfg);
2509 sv_catpvn(sv, "-I", 2);
2510 sv_catpv(sv,PRIVLIB_EXP);
2512 #if defined(MSDOS) || defined(WIN32)
2513 Perl_sv_setpvf(aTHX_ cmd, "\
2514 sed %s -e \"/^[^#]/b\" \
2515 -e \"/^#[ ]*include[ ]/b\" \
2516 -e \"/^#[ ]*define[ ]/b\" \
2517 -e \"/^#[ ]*if[ ]/b\" \
2518 -e \"/^#[ ]*ifdef[ ]/b\" \
2519 -e \"/^#[ ]*ifndef[ ]/b\" \
2520 -e \"/^#[ ]*else/b\" \
2521 -e \"/^#[ ]*elif[ ]/b\" \
2522 -e \"/^#[ ]*undef[ ]/b\" \
2523 -e \"/^#[ ]*endif/b\" \
2525 %s | %"SVf" -C %"SVf" %s",
2526 (PL_doextract ? "-e \"1,/^#/d\n\"" : ""),
2529 Perl_sv_setpvf(aTHX_ cmd, "\
2530 %s %s -e '/^[^#]/b' \
2531 -e '/^#[ ]*include[ ]/b' \
2532 -e '/^#[ ]*define[ ]/b' \
2533 -e '/^#[ ]*if[ ]/b' \
2534 -e '/^#[ ]*ifdef[ ]/b' \
2535 -e '/^#[ ]*ifndef[ ]/b' \
2536 -e '/^#[ ]*else/b' \
2537 -e '/^#[ ]*elif[ ]/b' \
2538 -e '/^#[ ]*undef[ ]/b' \
2539 -e '/^#[ ]*endif/b' \
2541 %s | %"SVf" %"SVf" %s",
2543 Perl_sv_setpvf(aTHX_ cmd, "\
2544 %s %s -e '/^[^#]/b' \
2545 -e '/^#[ ]*include[ ]/b' \
2546 -e '/^#[ ]*define[ ]/b' \
2547 -e '/^#[ ]*if[ ]/b' \
2548 -e '/^#[ ]*ifdef[ ]/b' \
2549 -e '/^#[ ]*ifndef[ ]/b' \
2550 -e '/^#[ ]*else/b' \
2551 -e '/^#[ ]*elif[ ]/b' \
2552 -e '/^#[ ]*undef[ ]/b' \
2553 -e '/^#[ ]*endif/b' \
2555 %s | %"SVf" -C %"SVf" %s",
2562 (PL_doextract ? "-e '1,/^#/d\n'" : ""),
2564 scriptname, cpp, sv, CPPMINUS);
2565 PL_doextract = FALSE;
2566 #ifdef IAMSUID /* actually, this is caught earlier */
2567 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2569 (void)seteuid(PL_uid); /* musn't stay setuid root */
2572 (void)setreuid((Uid_t)-1, PL_uid);
2574 #ifdef HAS_SETRESUID
2575 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2577 PerlProc_setuid(PL_uid);
2581 if (PerlProc_geteuid() != PL_uid)
2582 Perl_croak(aTHX_ "Can't do seteuid!\n");
2584 #endif /* IAMSUID */
2585 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
2589 else if (!*scriptname) {
2590 forbid_setid("program input from stdin");
2591 PL_rsfp = PerlIO_stdin();
2594 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
2595 #if defined(HAS_FCNTL) && defined(F_SETFD)
2597 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1); /* ensure close-on-exec */
2602 #ifndef IAMSUID /* in case script is not readable before setuid */
2604 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2605 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2608 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2609 (int)PERL_REVISION, (int)PERL_VERSION,
2610 (int)PERL_SUBVERSION), PL_origargv);
2611 Perl_croak(aTHX_ "Can't do setuid\n");
2615 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2616 CopFILE(PL_curcop), Strerror(errno));
2621 * I_SYSSTATVFS HAS_FSTATVFS
2623 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
2624 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2625 * here so that metaconfig picks them up. */
2629 S_fd_on_nosuid_fs(pTHX_ int fd)
2631 int check_okay = 0; /* able to do all the required sys/libcalls */
2632 int on_nosuid = 0; /* the fd is on a nosuid fs */
2634 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
2635 * fstatvfs() is UNIX98.
2636 * fstatfs() is 4.3 BSD.
2637 * ustat()+getmnt() is pre-4.3 BSD.
2638 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2639 * an irrelevant filesystem while trying to reach the right one.
2642 #undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2644 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2645 defined(HAS_FSTATVFS)
2646 # define FD_ON_NOSUID_CHECK_OKAY
2647 struct statvfs stfs;
2649 check_okay = fstatvfs(fd, &stfs) == 0;
2650 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
2651 # endif /* fstatvfs */
2653 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2654 defined(PERL_MOUNT_NOSUID) && \
2655 defined(HAS_FSTATFS) && \
2656 defined(HAS_STRUCT_STATFS) && \
2657 defined(HAS_STRUCT_STATFS_F_FLAGS)
2658 # define FD_ON_NOSUID_CHECK_OKAY
2661 check_okay = fstatfs(fd, &stfs) == 0;
2662 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
2663 # endif /* fstatfs */
2665 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2666 defined(PERL_MOUNT_NOSUID) && \
2667 defined(HAS_FSTAT) && \
2668 defined(HAS_USTAT) && \
2669 defined(HAS_GETMNT) && \
2670 defined(HAS_STRUCT_FS_DATA) && \
2672 # define FD_ON_NOSUID_CHECK_OKAY
2675 if (fstat(fd, &fdst) == 0) {
2677 if (ustat(fdst.st_dev, &us) == 0) {
2679 /* NOSTAT_ONE here because we're not examining fields which
2680 * vary between that case and STAT_ONE. */
2681 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
2682 size_t cmplen = sizeof(us.f_fname);
2683 if (sizeof(fsd.fd_req.path) < cmplen)
2684 cmplen = sizeof(fsd.fd_req.path);
2685 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2686 fdst.st_dev == fsd.fd_req.dev) {
2688 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2694 # endif /* fstat+ustat+getmnt */
2696 # if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2697 defined(HAS_GETMNTENT) && \
2698 defined(HAS_HASMNTOPT) && \
2699 defined(MNTOPT_NOSUID)
2700 # define FD_ON_NOSUID_CHECK_OKAY
2701 FILE *mtab = fopen("/etc/mtab", "r");
2702 struct mntent *entry;
2703 struct stat stb, fsb;
2705 if (mtab && (fstat(fd, &stb) == 0)) {
2706 while (entry = getmntent(mtab)) {
2707 if (stat(entry->mnt_dir, &fsb) == 0
2708 && fsb.st_dev == stb.st_dev)
2710 /* found the filesystem */
2712 if (hasmntopt(entry, MNTOPT_NOSUID))
2715 } /* A single fs may well fail its stat(). */
2720 # endif /* getmntent+hasmntopt */
2723 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
2726 #endif /* IAMSUID */
2729 S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
2735 /* do we need to emulate setuid on scripts? */
2737 /* This code is for those BSD systems that have setuid #! scripts disabled
2738 * in the kernel because of a security problem. Merely defining DOSUID
2739 * in perl will not fix that problem, but if you have disabled setuid
2740 * scripts in the kernel, this will attempt to emulate setuid and setgid
2741 * on scripts that have those now-otherwise-useless bits set. The setuid
2742 * root version must be called suidperl or sperlN.NNN. If regular perl
2743 * discovers that it has opened a setuid script, it calls suidperl with
2744 * the same argv that it had. If suidperl finds that the script it has
2745 * just opened is NOT setuid root, it sets the effective uid back to the
2746 * uid. We don't just make perl setuid root because that loses the
2747 * effective uid we had before invoking perl, if it was different from the
2750 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2751 * be defined in suidperl only. suidperl must be setuid root. The
2752 * Configure script will set this up for you if you want it.
2759 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
2760 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
2761 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
2766 #ifndef HAS_SETREUID
2767 /* On this access check to make sure the directories are readable,
2768 * there is actually a small window that the user could use to make
2769 * filename point to an accessible directory. So there is a faint
2770 * chance that someone could execute a setuid script down in a
2771 * non-accessible directory. I don't know what to do about that.
2772 * But I don't think it's too important. The manual lies when
2773 * it says access() is useful in setuid programs.
2775 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
2776 Perl_croak(aTHX_ "Permission denied");
2778 /* If we can swap euid and uid, then we can determine access rights
2779 * with a simple stat of the file, and then compare device and
2780 * inode to make sure we did stat() on the same file we opened.
2781 * Then we just have to make sure he or she can execute it.
2784 struct stat tmpstatbuf;
2788 setreuid(PL_euid,PL_uid) < 0
2791 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
2794 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
2795 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
2796 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
2797 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2798 #if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
2799 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
2800 Perl_croak(aTHX_ "Permission denied");
2802 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
2803 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
2804 (void)PerlIO_close(PL_rsfp);
2805 if (PL_rsfp = PerlProc_popen("/bin/mail root","w")) { /* heh, heh */
2806 PerlIO_printf(PL_rsfp,
2807 "User %"Uid_t_f" tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\
2808 (Filename of set-id script was %s, uid %"Uid_t_f" gid %"Gid_t_f".)\n\nSincerely,\nperl\n",
2809 PL_uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino,
2810 (long)PL_statbuf.st_dev, (long)PL_statbuf.st_ino,
2812 PL_statbuf.st_uid, PL_statbuf.st_gid);
2813 (void)PerlProc_pclose(PL_rsfp);
2815 Perl_croak(aTHX_ "Permission denied\n");
2819 setreuid(PL_uid,PL_euid) < 0
2821 # if defined(HAS_SETRESUID)
2822 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
2825 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
2826 Perl_croak(aTHX_ "Can't reswap uid and euid");
2827 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
2828 Perl_croak(aTHX_ "Permission denied\n");
2830 #endif /* HAS_SETREUID */
2831 #endif /* IAMSUID */
2833 if (!S_ISREG(PL_statbuf.st_mode))
2834 Perl_croak(aTHX_ "Permission denied");
2835 if (PL_statbuf.st_mode & S_IWOTH)
2836 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
2837 PL_doswitches = FALSE; /* -s is insecure in suid */
2838 CopLINE_inc(PL_curcop);
2839 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2840 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
2841 Perl_croak(aTHX_ "No #! line");
2842 s = SvPV(PL_linestr,n_a)+2;
2844 while (!isSPACE(*s)) s++;
2845 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
2846 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
2847 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
2848 Perl_croak(aTHX_ "Not a perl script");
2849 while (*s == ' ' || *s == '\t') s++;
2851 * #! arg must be what we saw above. They can invoke it by
2852 * mentioning suidperl explicitly, but they may not add any strange
2853 * arguments beyond what #! says if they do invoke suidperl that way.
2855 len = strlen(validarg);
2856 if (strEQ(validarg," PHOOEY ") ||
2857 strnNE(s,validarg,len) || !isSPACE(s[len]))
2858 Perl_croak(aTHX_ "Args must match #! line");
2861 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
2862 PL_euid == PL_statbuf.st_uid)
2864 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2865 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2866 #endif /* IAMSUID */
2868 if (PL_euid) { /* oops, we're not the setuid root perl */
2869 (void)PerlIO_close(PL_rsfp);
2872 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
2873 (int)PERL_REVISION, (int)PERL_VERSION,
2874 (int)PERL_SUBVERSION), PL_origargv);
2876 Perl_croak(aTHX_ "Can't do setuid\n");
2879 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
2881 (void)setegid(PL_statbuf.st_gid);
2884 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
2886 #ifdef HAS_SETRESGID
2887 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
2889 PerlProc_setgid(PL_statbuf.st_gid);
2893 if (PerlProc_getegid() != PL_statbuf.st_gid)
2894 Perl_croak(aTHX_ "Can't do setegid!\n");
2896 if (PL_statbuf.st_mode & S_ISUID) {
2897 if (PL_statbuf.st_uid != PL_euid)
2899 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
2902 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
2904 #ifdef HAS_SETRESUID
2905 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
2907 PerlProc_setuid(PL_statbuf.st_uid);
2911 if (PerlProc_geteuid() != PL_statbuf.st_uid)
2912 Perl_croak(aTHX_ "Can't do seteuid!\n");
2914 else if (PL_uid) { /* oops, mustn't run as root */
2916 (void)seteuid((Uid_t)PL_uid);
2919 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
2921 #ifdef HAS_SETRESUID
2922 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
2924 PerlProc_setuid((Uid_t)PL_uid);
2928 if (PerlProc_geteuid() != PL_uid)
2929 Perl_croak(aTHX_ "Can't do seteuid!\n");
2932 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
2933 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
2936 else if (PL_preprocess)
2937 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
2938 else if (fdscript >= 0)
2939 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
2941 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
2943 /* We absolutely must clear out any saved ids here, so we */
2944 /* exec the real perl, substituting fd script for scriptname. */
2945 /* (We pass script name as "subdir" of fd, which perl will grok.) */
2946 PerlIO_rewind(PL_rsfp);
2947 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
2948 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
2949 if (!PL_origargv[which])
2950 Perl_croak(aTHX_ "Permission denied");
2951 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
2952 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
2953 #if defined(HAS_FCNTL) && defined(F_SETFD)
2954 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
2956 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
2957 (int)PERL_REVISION, (int)PERL_VERSION,
2958 (int)PERL_SUBVERSION), PL_origargv);/* try again */
2959 Perl_croak(aTHX_ "Can't do setuid\n");
2960 #endif /* IAMSUID */
2962 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
2963 #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
2965 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
2966 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
2968 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
2971 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
2972 FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
2973 #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
2974 /* not set-id, must be wrapped */
2980 S_find_beginning(pTHX)
2982 register char *s, *s2;
2984 /* skip forward in input to the real script? */
2987 while (PL_doextract) {
2988 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
2989 Perl_croak(aTHX_ "No Perl script found in input\n");
2990 if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
2991 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
2992 PL_doextract = FALSE;
2993 while (*s && !(isSPACE (*s) || *s == '#')) s++;
2995 while (*s == ' ' || *s == '\t') s++;
2997 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
2998 if (strnEQ(s2-4,"perl",4))
3000 while ((s = moreswitches(s)))
3011 PL_uid = PerlProc_getuid();
3012 PL_euid = PerlProc_geteuid();
3013 PL_gid = PerlProc_getgid();
3014 PL_egid = PerlProc_getegid();
3016 PL_uid |= PL_gid << 16;
3017 PL_euid |= PL_egid << 16;
3019 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
3023 S_forbid_setid(pTHX_ char *s)
3025 if (PL_euid != PL_uid)
3026 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3027 if (PL_egid != PL_gid)
3028 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
3032 Perl_init_debugger(pTHX)
3035 HV *ostash = PL_curstash;
3037 PL_curstash = PL_debstash;
3038 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3039 AvREAL_off(PL_dbargs);
3040 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3041 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3042 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
3043 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3044 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
3045 sv_setiv(PL_DBsingle, 0);
3046 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
3047 sv_setiv(PL_DBtrace, 0);
3048 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
3049 sv_setiv(PL_DBsignal, 0);
3050 PL_curstash = ostash;
3053 #ifndef STRESS_REALLOC
3054 #define REASONABLE(size) (size)
3056 #define REASONABLE(size) (1) /* unreasonable */
3060 Perl_init_stacks(pTHX)
3062 /* start with 128-item stack and 8K cxstack */
3063 PL_curstackinfo = new_stackinfo(REASONABLE(128),
3064 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3065 PL_curstackinfo->si_type = PERLSI_MAIN;
3066 PL_curstack = PL_curstackinfo->si_stack;
3067 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
3069 PL_stack_base = AvARRAY(PL_curstack);
3070 PL_stack_sp = PL_stack_base;
3071 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
3073 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3076 PL_tmps_max = REASONABLE(128);
3078 New(54,PL_markstack,REASONABLE(32),I32);
3079 PL_markstack_ptr = PL_markstack;
3080 PL_markstack_max = PL_markstack + REASONABLE(32);
3084 New(54,PL_scopestack,REASONABLE(32),I32);
3085 PL_scopestack_ix = 0;
3086 PL_scopestack_max = REASONABLE(32);
3088 New(54,PL_savestack,REASONABLE(128),ANY);
3089 PL_savestack_ix = 0;
3090 PL_savestack_max = REASONABLE(128);
3092 New(54,PL_retstack,REASONABLE(16),OP*);
3094 PL_retstack_max = REASONABLE(16);
3103 while (PL_curstackinfo->si_next)
3104 PL_curstackinfo = PL_curstackinfo->si_next;
3105 while (PL_curstackinfo) {
3106 PERL_SI *p = PL_curstackinfo->si_prev;
3107 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3108 Safefree(PL_curstackinfo->si_cxstack);
3109 Safefree(PL_curstackinfo);
3110 PL_curstackinfo = p;
3112 Safefree(PL_tmps_stack);
3113 Safefree(PL_markstack);
3114 Safefree(PL_scopestack);
3115 Safefree(PL_savestack);
3116 Safefree(PL_retstack);
3120 static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
3131 lex_start(PL_linestr);
3133 PL_subname = newSVpvn("main",4);
3137 S_init_predump_symbols(pTHX)
3143 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3144 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3145 GvMULTI_on(PL_stdingv);
3146 io = GvIOp(PL_stdingv);
3147 IoIFP(io) = PerlIO_stdin();
3148 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
3150 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3152 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
3155 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
3157 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
3159 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3161 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3162 GvMULTI_on(PL_stderrgv);
3163 io = GvIOp(PL_stderrgv);
3164 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
3165 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
3167 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
3169 PL_statname = NEWSV(66,0); /* last filename we did stat on */
3172 PL_osname = savepv(OSNAME);
3176 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
3183 argc--,argv++; /* skip name of script */
3184 if (PL_doswitches) {
3185 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3188 if (argv[0][1] == '-' && !argv[0][2]) {
3192 if ((s = strchr(argv[0], '='))) {
3194 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
3197 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
3200 PL_toptarget = NEWSV(0,0);
3201 sv_upgrade(PL_toptarget, SVt_PVFM);
3202 sv_setpvn(PL_toptarget, "", 0);
3203 PL_bodytarget = NEWSV(0,0);
3204 sv_upgrade(PL_bodytarget, SVt_PVFM);
3205 sv_setpvn(PL_bodytarget, "", 0);
3206 PL_formtarget = PL_bodytarget;
3209 if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {
3210 sv_setpv(GvSV(tmpgv),PL_origfilename);
3211 magicname("0", "0", 1);
3213 if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)))
3215 sv_setpv(GvSV(tmpgv), os2_execname());
3217 sv_setpv(GvSV(tmpgv),PL_origargv[0]);
3219 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3220 GvMULTI_on(PL_argvgv);
3221 (void)gv_AVadd(PL_argvgv);
3222 av_clear(GvAVn(PL_argvgv));
3223 for (; argc > 0; argc--,argv++) {
3224 SV *sv = newSVpv(argv[0],0);
3225 av_push(GvAVn(PL_argvgv),sv);
3226 if (PL_widesyscalls)
3227 (void)sv_utf8_decode(sv);
3230 if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
3232 GvMULTI_on(PL_envgv);
3233 hv = GvHVn(PL_envgv);
3234 hv_magic(hv, PL_envgv, 'E');
3235 #if !defined( VMS) && !defined(EPOC) /* VMS doesn't have environ array */
3236 /* Note that if the supplied env parameter is actually a copy
3237 of the global environ then it may now point to free'd memory
3238 if the environment has been modified since. To avoid this
3239 problem we treat env==NULL as meaning 'use the default'
3244 environ[0] = Nullch;
3245 for (; *env; env++) {
3246 if (!(s = strchr(*env,'=')))
3252 sv = newSVpv(s--,0);
3253 (void)hv_store(hv, *env, s - *env, sv, 0);
3255 #if defined(__BORLANDC__) && defined(USE_WIN32_RTL_ENV)
3256 /* Sins of the RTL. See note in my_setenv(). */
3257 (void)PerlEnv_putenv(savepv(*env));
3261 #ifdef DYNAMIC_ENV_FETCH
3262 HvNAME(hv) = savepv(ENV_HV_NAME);
3266 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
3267 sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
3271 S_init_perllib(pTHX)
3276 s = PerlEnv_getenv("PERL5LIB");
3278 incpush(s, TRUE, TRUE);
3280 incpush(PerlEnv_getenv("PERLLIB"), FALSE, FALSE);
3282 /* Treat PERL5?LIB as a possible search list logical name -- the
3283 * "natural" VMS idiom for a Unix path string. We allow each
3284 * element to be a set of |-separated directories for compatibility.
3288 if (my_trnlnm("PERL5LIB",buf,0))
3289 do { incpush(buf,TRUE,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx));
3291 while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE,FALSE);
3295 /* Use the ~-expanded versions of APPLLIB (undocumented),
3296 ARCHLIB PRIVLIB SITEARCH SITELIB VENDORARCH and VENDORLIB
3299 incpush(APPLLIB_EXP, TRUE, TRUE);
3303 incpush(ARCHLIB_EXP, FALSE, FALSE);
3306 # define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
3309 incpush(PRIVLIB_EXP, TRUE, FALSE);
3311 incpush(PRIVLIB_EXP, FALSE, FALSE);
3315 /* sitearch is always relative to sitelib on Windows for
3316 * DLL-based path intuition to work correctly */
3317 # if !defined(WIN32)
3318 incpush(SITEARCH_EXP, FALSE, FALSE);
3324 incpush(SITELIB_EXP, TRUE, FALSE); /* this picks up sitearch as well */
3326 incpush(SITELIB_EXP, FALSE, FALSE);
3330 #ifdef SITELIB_STEM /* Search for version-specific dirs below here */
3331 incpush(SITELIB_STEM, FALSE, TRUE);
3334 #ifdef PERL_VENDORARCH_EXP
3335 /* vendorarch is always relative to vendorlib on Windows for
3336 * DLL-based path intuition to work correctly */
3337 # if !defined(WIN32)
3338 incpush(PERL_VENDORARCH_EXP, FALSE, FALSE);
3342 #ifdef PERL_VENDORLIB_EXP
3344 incpush(PERL_VENDORLIB_EXP, TRUE, FALSE); /* this picks up vendorarch as well */
3346 incpush(PERL_VENDORLIB_EXP, FALSE, FALSE);
3350 #ifdef PERL_VENDORLIB_STEM /* Search for version-specific dirs below here */
3351 incpush(PERL_VENDORLIB_STEM, FALSE, TRUE);
3354 #ifdef PERL_OTHERLIBDIRS
3355 incpush(PERL_OTHERLIBDIRS, TRUE, TRUE);
3359 incpush(".", FALSE, FALSE);
3363 # define PERLLIB_SEP ';'
3366 # define PERLLIB_SEP '|'
3368 # define PERLLIB_SEP ':'
3371 #ifndef PERLLIB_MANGLE
3372 # define PERLLIB_MANGLE(s,n) (s)
3376 S_incpush(pTHX_ char *p, int addsubdirs, int addoldvers)
3378 SV *subdir = Nullsv;
3383 if (addsubdirs || addoldvers) {
3384 subdir = sv_newmortal();
3387 /* Break at all separators */
3389 SV *libdir = NEWSV(55,0);
3392 /* skip any consecutive separators */
3393 while ( *p == PERLLIB_SEP ) {
3394 /* Uncomment the next line for PATH semantics */
3395 /* av_push(GvAVn(PL_incgv), newSVpvn(".", 1)); */
3399 if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
3400 sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)),
3405 sv_setpv(libdir, PERLLIB_MANGLE(p, 0));
3406 p = Nullch; /* break out */
3410 * BEFORE pushing libdir onto @INC we may first push version- and
3411 * archname-specific sub-directories.
3413 if (addsubdirs || addoldvers) {
3414 #ifdef PERL_INC_VERSION_LIST
3415 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
3416 const char *incverlist[] = { PERL_INC_VERSION_LIST };
3417 const char **incver;
3419 struct stat tmpstatbuf;
3424 if ((unix = tounixspec_ts(SvPV(libdir,len),Nullch)) != Nullch) {
3426 while (unix[len-1] == '/') len--; /* Cosmetic */
3427 sv_usepvn(libdir,unix,len);
3430 PerlIO_printf(Perl_error_log,
3431 "Failed to unixify @INC element \"%s\"\n",
3435 /* .../version/archname if -d .../version/archname */
3436 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT"/%s",
3438 (int)PERL_REVISION, (int)PERL_VERSION,
3439 (int)PERL_SUBVERSION, ARCHNAME);
3440 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3441 S_ISDIR(tmpstatbuf.st_mode))
3442 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3444 /* .../version if -d .../version */
3445 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/"PERL_FS_VER_FMT, libdir,
3446 (int)PERL_REVISION, (int)PERL_VERSION,
3447 (int)PERL_SUBVERSION);
3448 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3449 S_ISDIR(tmpstatbuf.st_mode))
3450 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3452 /* .../archname if -d .../archname */
3453 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, ARCHNAME);
3454 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3455 S_ISDIR(tmpstatbuf.st_mode))
3456 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3459 #ifdef PERL_INC_VERSION_LIST
3461 for (incver = incverlist; *incver; incver++) {
3462 /* .../xxx if -d .../xxx */
3463 Perl_sv_setpvf(aTHX_ subdir, "%"SVf"/%s", libdir, *incver);
3464 if (PerlLIO_stat(SvPVX(subdir), &tmpstatbuf) >= 0 &&
3465 S_ISDIR(tmpstatbuf.st_mode))
3466 av_push(GvAVn(PL_incgv), newSVsv(subdir));
3472 /* finally push this lib directory on the end of @INC */
3473 av_push(GvAVn(PL_incgv), libdir);
3478 STATIC struct perl_thread *
3479 S_init_main_thread(pTHX)
3481 #if !defined(PERL_IMPLICIT_CONTEXT)
3482 struct perl_thread *thr;
3486 Newz(53, thr, 1, struct perl_thread);
3487 PL_curcop = &PL_compiling;
3488 thr->interp = PERL_GET_INTERP;
3489 thr->cvcache = newHV();
3490 thr->threadsv = newAV();
3491 /* thr->threadsvp is set when find_threadsv is called */
3492 thr->specific = newAV();
3493 thr->flags = THRf_R_JOINABLE;
3494 MUTEX_INIT(&thr->mutex);
3495 /* Handcraft thrsv similarly to mess_sv */
3496 New(53, PL_thrsv, 1, SV);
3497 Newz(53, xpv, 1, XPV);
3498 SvFLAGS(PL_thrsv) = SVt_PV;
3499 SvANY(PL_thrsv) = (void*)xpv;
3500 SvREFCNT(PL_thrsv) = 1 << 30; /* practically infinite */
3501 SvPVX(PL_thrsv) = (char*)thr;
3502 SvCUR_set(PL_thrsv, sizeof(thr));
3503 SvLEN_set(PL_thrsv, sizeof(thr));
3504 *SvEND(PL_thrsv) = '\0'; /* in the trailing_nul field */
3505 thr->oursv = PL_thrsv;
3506 PL_chopset = " \n-";
3509 MUTEX_LOCK(&PL_threads_mutex);
3514 MUTEX_UNLOCK(&PL_threads_mutex);
3516 #ifdef HAVE_THREAD_INTERN
3517 Perl_init_thread_intern(thr);
3520 #ifdef SET_THREAD_SELF
3521 SET_THREAD_SELF(thr);
3523 thr->self = pthread_self();
3524 #endif /* SET_THREAD_SELF */
3528 * These must come after the SET_THR because sv_setpvn does
3529 * SvTAINT and the taint fields require dTHR.
3531 PL_toptarget = NEWSV(0,0);
3532 sv_upgrade(PL_toptarget, SVt_PVFM);
3533 sv_setpvn(PL_toptarget, "", 0);
3534 PL_bodytarget = NEWSV(0,0);
3535 sv_upgrade(PL_bodytarget, SVt_PVFM);
3536 sv_setpvn(PL_bodytarget, "", 0);
3537 PL_formtarget = PL_bodytarget;
3538 thr->errsv = newSVpvn("", 0);
3539 (void) find_threadsv("@"); /* Ensure $@ is initialised early */
3542 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3543 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3544 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3545 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3546 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
3548 PL_reginterp_cnt = 0;
3552 #endif /* USE_THREADS */
3555 Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
3559 line_t oldline = CopLINE(PL_curcop);
3565 while (AvFILL(paramList) >= 0) {
3566 cv = (CV*)av_shift(paramList);
3568 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3569 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_list_body), cv);
3575 #ifndef PERL_FLEXIBLE_EXCEPTIONS
3579 (void)SvPV(atsv, len);
3582 PL_curcop = &PL_compiling;
3583 CopLINE_set(PL_curcop, oldline);
3584 if (paramList == PL_beginav)
3585 sv_catpv(atsv, "BEGIN failed--compilation aborted");
3587 Perl_sv_catpvf(aTHX_ atsv,
3588 "%s failed--call queue aborted",
3589 paramList == PL_checkav ? "CHECK"
3590 : paramList == PL_initav ? "INIT"
3592 while (PL_scopestack_ix > oldscope)
3595 Perl_croak(aTHX_ "%s", SvPVx(atsv, n_a));
3602 /* my_exit() was called */
3603 while (PL_scopestack_ix > oldscope)
3606 PL_curstash = PL_defstash;
3607 PL_curcop = &PL_compiling;
3608 CopLINE_set(PL_curcop, oldline);
3610 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED)) {
3611 if (paramList == PL_beginav)
3612 Perl_croak(aTHX_ "BEGIN failed--compilation aborted");
3614 Perl_croak(aTHX_ "%s failed--call queue aborted",
3615 paramList == PL_checkav ? "CHECK"
3616 : paramList == PL_initav ? "INIT"
3623 PL_curcop = &PL_compiling;
3624 CopLINE_set(PL_curcop, oldline);
3627 PerlIO_printf(Perl_error_log, "panic: restartop\n");
3635 #ifdef PERL_FLEXIBLE_EXCEPTIONS
3637 S_vcall_list_body(pTHX_ va_list args)
3639 CV *cv = va_arg(args, CV*);
3640 return call_list_body(cv);
3645 S_call_list_body(pTHX_ CV *cv)
3647 PUSHMARK(PL_stack_sp);
3648 call_sv((SV*)cv, G_EVAL|G_DISCARD);
3653 Perl_my_exit(pTHX_ U32 status)
3657 DEBUG_S(PerlIO_printf(Perl_debug_log, "my_exit: thread %p, status %lu\n",
3658 thr, (unsigned long) status));
3667 STATUS_NATIVE_SET(status);
3674 Perl_my_failure_exit(pTHX)
3677 if (vaxc$errno & 1) {
3678 if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */
3679 STATUS_NATIVE_SET(44);
3682 if (!vaxc$errno && errno) /* unlikely */
3683 STATUS_NATIVE_SET(44);
3685 STATUS_NATIVE_SET(vaxc$errno);
3690 STATUS_POSIX_SET(errno);
3692 exitstatus = STATUS_POSIX >> 8;
3693 if (exitstatus & 255)
3694 STATUS_POSIX_SET(exitstatus);
3696 STATUS_POSIX_SET(255);
3703 S_my_exit_jump(pTHX)
3706 register PERL_CONTEXT *cx;
3711 SvREFCNT_dec(PL_e_script);
3712 PL_e_script = Nullsv;
3715 POPSTACK_TO(PL_mainstack);
3716 if (cxstack_ix >= 0) {
3719 POPBLOCK(cx,PL_curpm);
3731 read_e_script(pTHXo_ int idx, SV *buf_sv, int maxlen)
3734 p = SvPVX(PL_e_script);
3735 nl = strchr(p, '\n');
3736 nl = (nl) ? nl+1 : SvEND(PL_e_script);
3738 filter_del(read_e_script);
3741 sv_catpvn(buf_sv, p, nl-p);
3742 sv_chop(PL_e_script, nl);